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UBUNTU: Ubuntu-5.15.0-39.42
[mirror_ubuntu-jammy-kernel.git] / drivers / platform / x86 / thinkpad_acpi.c
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16216333 1// SPDX-License-Identifier: GPL-2.0-or-later
1da177e4 2/*
643f12db 3 * thinkpad_acpi.c - ThinkPad ACPI Extras
1da177e4 4 *
78f81cc4 5 * Copyright (C) 2004-2005 Borislav Deianov <borislav@users.sf.net>
1c762ca4 6 * Copyright (C) 2006-2009 Henrique de Moraes Holschuh <hmh@hmh.eng.br>
78f81cc4
BD		 7 */
8
0978e012
JP		 9#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
10
2801b968 11#define TPACPI_VERSION "0.26"
6b99e356 12#define TPACPI_SYSFS_VERSION 0x030000
78f81cc4
BD		 13
14/*
1da177e4 15 * Changelog:
4b45cc07
HMH		 16 * 2007-10-20 changelog trimmed down
17 *
643f12db
HMH		 18 * 2007-03-27 0.14 renamed to thinkpad_acpi and moved to
19 * drivers/misc.
f9ff43a6
HMH		 20 *
21 * 2006-11-22 0.13 new maintainer
22 * changelog now lives in git commit history, and will
23 * not be updated further in-file.
837ca6dd 24 *
78f81cc4
BD		 25 * 2005-03-17 0.11 support for 600e, 770x
26 * thanks to Jamie Lentin <lentinj@dial.pipex.com>
4b45cc07
HMH		 27 *
28 * 2005-01-16 0.9 use MODULE_VERSION
78f81cc4
BD		 29 * thanks to Henrik Brix Andersen <brix@gentoo.org>
30 * fix parameter passing on module loading
31 * thanks to Rusty Russell <rusty@rustcorp.com.au>
32 * thanks to Jim Radford <radford@blackbean.org>
33 * 2004-11-08 0.8 fix init error case, don't return from a macro
34 * thanks to Chris Wright <chrisw@osdl.org>
1da177e4
LT		 35 */
36
0c78039f
HMH		 37#include <linux/kernel.h>
38#include <linux/module.h>
39#include <linux/init.h>
40#include <linux/types.h>
41#include <linux/string.h>
42#include <linux/list.h>
43#include <linux/mutex.h>
73a94d86 44#include <linux/sched.h>
7a36094d 45#include <linux/sched/signal.h>
0c78039f
HMH		 46#include <linux/kthread.h>
47#include <linux/freezer.h>
48#include <linux/delay.h>
5a0e3ad6 49#include <linux/slab.h>
0c78039f
HMH		 50#include <linux/nvram.h>
51#include <linux/proc_fs.h>
887965e6 52#include <linux/seq_file.h>
0c78039f
HMH		 53#include <linux/sysfs.h>
54#include <linux/backlight.h>
2801b968 55#include <linux/bitops.h>
0c78039f
HMH		 56#include <linux/fb.h>
57#include <linux/platform_device.h>
58#include <linux/hwmon.h>
59#include <linux/hwmon-sysfs.h>
60#include <linux/input.h>
4fa6811b 61#include <linux/leds.h>
0e74dc26 62#include <linux/rfkill.h>
0c78039f
HMH		 63#include <linux/dmi.h>
64#include <linux/jiffies.h>
65#include <linux/workqueue.h>
8b48463f 66#include <linux/acpi.h>
f7db839f 67#include <linux/pci.h>
2801b968 68#include <linux/power_supply.h>
c3bfcd4c 69#include <linux/platform_profile.h>
0d204c34
HMH		 70#include <sound/core.h>
71#include <sound/control.h>
72#include <sound/initval.h>
7c0f6ba6 73#include <linux/uaccess.h>
2801b968 74#include <acpi/battery.h>
b33c6ce5 75#include <acpi/video.h>
153cca9c 76#include "dual_accel_detect.h"
0c78039f
HMH		 77
78/* ThinkPad CMOS commands */
79#define TP_CMOS_VOLUME_DOWN 0
80#define TP_CMOS_VOLUME_UP 1
81#define TP_CMOS_VOLUME_MUTE 2
82#define TP_CMOS_BRIGHTNESS_UP 4
83#define TP_CMOS_BRIGHTNESS_DOWN 5
4fa6811b
HMH		 84#define TP_CMOS_THINKLIGHT_ON 12
85#define TP_CMOS_THINKLIGHT_OFF 13
0c78039f
HMH		 86
87/* NVRAM Addresses */
88enum tp_nvram_addr {
89 TP_NVRAM_ADDR_HK2 = 0x57,
90 TP_NVRAM_ADDR_THINKLIGHT = 0x58,
91 TP_NVRAM_ADDR_VIDEO = 0x59,
92 TP_NVRAM_ADDR_BRIGHTNESS = 0x5e,
93 TP_NVRAM_ADDR_MIXER = 0x60,
94};
95
96/* NVRAM bit masks */
97enum {
98 TP_NVRAM_MASK_HKT_THINKPAD = 0x08,
99 TP_NVRAM_MASK_HKT_ZOOM = 0x20,
100 TP_NVRAM_MASK_HKT_DISPLAY = 0x40,
101 TP_NVRAM_MASK_HKT_HIBERNATE = 0x80,
102 TP_NVRAM_MASK_THINKLIGHT = 0x10,
103 TP_NVRAM_MASK_HKT_DISPEXPND = 0x30,
104 TP_NVRAM_MASK_HKT_BRIGHTNESS = 0x20,
105 TP_NVRAM_MASK_LEVEL_BRIGHTNESS = 0x0f,
106 TP_NVRAM_POS_LEVEL_BRIGHTNESS = 0,
107 TP_NVRAM_MASK_MUTE = 0x40,
108 TP_NVRAM_MASK_HKT_VOLUME = 0x80,
109 TP_NVRAM_MASK_LEVEL_VOLUME = 0x0f,
110 TP_NVRAM_POS_LEVEL_VOLUME = 0,
111};
112
5d756db9
HMH		 113/* Misc NVRAM-related */
114enum {
115 TP_NVRAM_LEVEL_VOLUME_MAX = 14,
116};
117
b21a15f6 118/* ACPI HIDs */
9fbdaeb4
MI		 119#define TPACPI_ACPI_IBM_HKEY_HID "IBM0068"
120#define TPACPI_ACPI_LENOVO_HKEY_HID "LEN0068"
a3c42a46 121#define TPACPI_ACPI_LENOVO_HKEY_V2_HID "LEN0268"
437e470c 122#define TPACPI_ACPI_EC_HID "PNP0C09"
b21a15f6
HMH		 123
124/* Input IDs */
125#define TPACPI_HKEY_INPUT_PRODUCT 0x5054 /* "TP" */
126#define TPACPI_HKEY_INPUT_VERSION 0x4101
127
153f8220
HMH		 128/* ACPI \WGSV commands */
129enum {
130 TP_ACPI_WGSV_GET_STATE = 0x01, /* Get state information */
131 TP_ACPI_WGSV_PWR_ON_ON_RESUME = 0x02, /* Resume WWAN powered on */
132 TP_ACPI_WGSV_PWR_OFF_ON_RESUME = 0x03, /* Resume WWAN powered off */
133 TP_ACPI_WGSV_SAVE_STATE = 0x04, /* Save state for S4/S5 */
134};
135
136/* TP_ACPI_WGSV_GET_STATE bits */
137enum {
138 TP_ACPI_WGSV_STATE_WWANEXIST = 0x0001, /* WWAN hw available */
139 TP_ACPI_WGSV_STATE_WWANPWR = 0x0002, /* WWAN radio enabled */
140 TP_ACPI_WGSV_STATE_WWANPWRRES = 0x0004, /* WWAN state at resume */
141 TP_ACPI_WGSV_STATE_WWANBIOSOFF = 0x0008, /* WWAN disabled in BIOS */
142 TP_ACPI_WGSV_STATE_BLTHEXIST = 0x0001, /* BLTH hw available */
143 TP_ACPI_WGSV_STATE_BLTHPWR = 0x0002, /* BLTH radio enabled */
144 TP_ACPI_WGSV_STATE_BLTHPWRRES = 0x0004, /* BLTH state at resume */
145 TP_ACPI_WGSV_STATE_BLTHBIOSOFF = 0x0008, /* BLTH disabled in BIOS */
146 TP_ACPI_WGSV_STATE_UWBEXIST = 0x0010, /* UWB hw available */
147 TP_ACPI_WGSV_STATE_UWBPWR = 0x0020, /* UWB radio enabled */
148};
b21a15f6 149
67bcae6e
HMH		 150/* HKEY events */
151enum tpacpi_hkey_event_t {
152 /* Hotkey-related */
153 TP_HKEY_EV_HOTKEY_BASE = 0x1001, /* first hotkey (FN+F1) */
154 TP_HKEY_EV_BRGHT_UP = 0x1010, /* Brightness up */
155 TP_HKEY_EV_BRGHT_DOWN = 0x1011, /* Brightness down */
c685e20d 156 TP_HKEY_EV_KBD_LIGHT = 0x1012, /* Thinklight/kbd backlight */
67bcae6e
HMH		 157 TP_HKEY_EV_VOL_UP = 0x1015, /* Volume up or unmute */
158 TP_HKEY_EV_VOL_DOWN = 0x1016, /* Volume down or unmute */
159 TP_HKEY_EV_VOL_MUTE = 0x1017, /* Mixer output mute */
160
161 /* Reasons for waking up from S3/S4 */
162 TP_HKEY_EV_WKUP_S3_UNDOCK = 0x2304, /* undock requested, S3 */
163 TP_HKEY_EV_WKUP_S4_UNDOCK = 0x2404, /* undock requested, S4 */
164 TP_HKEY_EV_WKUP_S3_BAYEJ = 0x2305, /* bay ejection req, S3 */
165 TP_HKEY_EV_WKUP_S4_BAYEJ = 0x2405, /* bay ejection req, S4 */
166 TP_HKEY_EV_WKUP_S3_BATLOW = 0x2313, /* battery empty, S3 */
167 TP_HKEY_EV_WKUP_S4_BATLOW = 0x2413, /* battery empty, S4 */
168
169 /* Auto-sleep after eject request */
170 TP_HKEY_EV_BAYEJ_ACK = 0x3003, /* bay ejection complete */
171 TP_HKEY_EV_UNDOCK_ACK = 0x4003, /* undock complete */
172
173 /* Misc bay events */
174 TP_HKEY_EV_OPTDRV_EJ = 0x3006, /* opt. drive tray ejected */
a50245af
HMH		 175 TP_HKEY_EV_HOTPLUG_DOCK = 0x4010, /* docked into hotplug dock
176 or port replicator */
177 TP_HKEY_EV_HOTPLUG_UNDOCK = 0x4011, /* undocked from hotplug
178 dock or port replicator */
0a053f01
AK		 179 /*
180 * Thinkpad X1 Tablet series devices emit 0x4012 and 0x4013
181 * when keyboard cover is attached, detached or folded onto the back
182 */
183 TP_HKEY_EV_KBD_COVER_ATTACH = 0x4012, /* keyboard cover attached */
184 TP_HKEY_EV_KBD_COVER_DETACH = 0x4013, /* keyboard cover detached or folded back */
67bcae6e
HMH		 185
186 /* User-interface events */
187 TP_HKEY_EV_LID_CLOSE = 0x5001, /* laptop lid closed */
188 TP_HKEY_EV_LID_OPEN = 0x5002, /* laptop lid opened */
189 TP_HKEY_EV_TABLET_TABLET = 0x5009, /* tablet swivel up */
190 TP_HKEY_EV_TABLET_NOTEBOOK = 0x500a, /* tablet swivel down */
b03f4d49
L		 191 TP_HKEY_EV_TABLET_CHANGED = 0x60c0, /* X1 Yoga (2016):
192 * enter/leave tablet mode
193 */
67bcae6e
HMH		 194 TP_HKEY_EV_PEN_INSERTED = 0x500b, /* tablet pen inserted */
195 TP_HKEY_EV_PEN_REMOVED = 0x500c, /* tablet pen removed */
196 TP_HKEY_EV_BRGHT_CHANGED = 0x5010, /* backlight control event */
197
2d43f671
HMH		 198 /* Key-related user-interface events */
199 TP_HKEY_EV_KEY_NUMLOCK = 0x6000, /* NumLock key pressed */
200 TP_HKEY_EV_KEY_FN = 0x6005, /* Fn key pressed? E420 */
67ab6248 201 TP_HKEY_EV_KEY_FN_ESC = 0x6060, /* Fn+Esc key pressed X240 */
2d43f671 202
67bcae6e
HMH		 203 /* Thermal events */
204 TP_HKEY_EV_ALARM_BAT_HOT = 0x6011, /* battery too hot */
205 TP_HKEY_EV_ALARM_BAT_XHOT = 0x6012, /* battery critically hot */
206 TP_HKEY_EV_ALARM_SENSOR_HOT = 0x6021, /* sensor too hot */
207 TP_HKEY_EV_ALARM_SENSOR_XHOT = 0x6022, /* sensor critically hot */
6e6bc5f6
HMH		 208 TP_HKEY_EV_THM_TABLE_CHANGED = 0x6030, /* windows; thermal table changed */
209 TP_HKEY_EV_THM_CSM_COMPLETED = 0x6032, /* windows; thermal control set
210 * command completed. Related to
211 * AML DYTC */
212 TP_HKEY_EV_THM_TRANSFM_CHANGED = 0x60F0, /* windows; thermal transformation
213 * changed. Related to AML GMTS */
67bcae6e 214
6f62bc3e
RH		 215 /* AC-related events */
216 TP_HKEY_EV_AC_CHANGED = 0x6040, /* AC status changed */
2d43f671 217
587d8628
DH		 218 /* Further user-interface events */
219 TP_HKEY_EV_PALM_DETECTED = 0x60b0, /* palm hoveres keyboard */
220 TP_HKEY_EV_PALM_UNDETECTED = 0x60b1, /* palm removed */
221
67bcae6e
HMH		 222 /* Misc */
223 TP_HKEY_EV_RFKILL_CHANGED = 0x7000, /* rfkill switch changed */
224};
225
b21a15f6
HMH		 226/****************************************************************************
227 * Main driver
228 */
229
e0c7dfe7
HMH		 230#define TPACPI_NAME "thinkpad"
231#define TPACPI_DESC "ThinkPad ACPI Extras"
232#define TPACPI_FILE TPACPI_NAME "_acpi"
233#define TPACPI_URL "http://ibm-acpi.sf.net/"
234#define TPACPI_MAIL "ibm-acpi-devel@lists.sourceforge.net"
b21a15f6 235
e0c7dfe7
HMH		 236#define TPACPI_PROC_DIR "ibm"
237#define TPACPI_ACPI_EVENT_PREFIX "ibm"
238#define TPACPI_DRVR_NAME TPACPI_FILE
95e57ab2 239#define TPACPI_DRVR_SHORTNAME "tpacpi"
e0c7dfe7 240#define TPACPI_HWMON_DRVR_NAME TPACPI_NAME "_hwmon"
b21a15f6 241
95e57ab2 242#define TPACPI_NVRAM_KTHREAD_NAME "ktpacpi_nvramd"
e0e3c061 243#define TPACPI_WORKQUEUE_NAME "ktpacpid"
95e57ab2 244
e0c7dfe7 245#define TPACPI_MAX_ACPI_ARGS 3
b21a15f6 246
7ff8d62f 247/* Debugging printk groups */
0c78039f 248#define TPACPI_DBG_ALL 0xffff
73a94d86 249#define TPACPI_DBG_DISCLOSETASK 0x8000
0c78039f
HMH		 250#define TPACPI_DBG_INIT 0x0001
251#define TPACPI_DBG_EXIT 0x0002
bee4cd9b 252#define TPACPI_DBG_RFKILL 0x0004
56e2c200 253#define TPACPI_DBG_HKEY 0x0008
74a60c0f 254#define TPACPI_DBG_FAN 0x0010
0e501834 255#define TPACPI_DBG_BRGHT 0x0020
329e4e18 256#define TPACPI_DBG_MIXER 0x0040
0c78039f 257
35ff8b9f
HMH		 258#define onoff(status, bit) ((status) & (1 << (bit)) ? "on" : "off")
259#define enabled(status, bit) ((status) & (1 << (bit)) ? "enabled" : "disabled")
260#define strlencmp(a, b) (strncmp((a), (b), strlen(b)))
0c78039f 261
0c78039f
HMH		 262
263/****************************************************************************
b21a15f6 264 * Driver-wide structs and misc. variables
0c78039f
HMH		 265 */
266
267struct ibm_struct;
268
269struct tp_acpi_drv_struct {
270 const struct acpi_device_id *hid;
271 struct acpi_driver *driver;
272
273 void (*notify) (struct ibm_struct *, u32);
274 acpi_handle *handle;
275 u32 type;
276 struct acpi_device *device;
277};
278
279struct ibm_struct {
280 char *name;
281
887965e6 282 int (*read) (struct seq_file *);
0c78039f
HMH		 283 int (*write) (char *);
284 void (*exit) (void);
285 void (*resume) (void);
fd3c3a42 286 void (*suspend) (void);
90d9d3c7 287 void (*shutdown) (void);
0c78039f
HMH		 288
289 struct list_head all_drivers;
290
291 struct tp_acpi_drv_struct *acpi;
292
293 struct {
294 u8 acpi_driver_registered:1;
295 u8 acpi_notify_installed:1;
296 u8 proc_created:1;
297 u8 init_called:1;
298 u8 experimental:1;
299 } flags;
300};
301
302struct ibm_init_struct {
303 char param[32];
304
305 int (*init) (struct ibm_init_struct *);
d161a13f 306 umode_t base_procfs_mode;
0c78039f
HMH		 307 struct ibm_struct *data;
308};
309
310static struct {
0c78039f
HMH		 311 u32 bluetooth:1;
312 u32 hotkey:1;
313 u32 hotkey_mask:1;
314 u32 hotkey_wlsw:1;
b3180028
L		 315 enum {
316 TP_HOTKEY_TABLET_NONE = 0,
317 TP_HOTKEY_TABLET_USES_MHKG,
dda3ec0a 318 TP_HOTKEY_TABLET_USES_GMMS,
b3180028 319 } hotkey_tablet;
bb28f3d5 320 u32 kbdlight:1;
0c78039f
HMH		 321 u32 light:1;
322 u32 light_status:1;
b5972796 323 u32 bright_acpimode:1;
77775838 324 u32 bright_unkfw:1;
0c78039f 325 u32 wan:1;
0045c0aa 326 u32 uwb:1;
0c78039f 327 u32 fan_ctrl_status_undef:1;
d7377247 328 u32 second_fan:1;
14232c6e 329 u32 second_fan_ctl:1;
60201732 330 u32 beep_needs_two_args:1;
a112ceee 331 u32 mixer_no_level_control:1;
1a32ebb2 332 u32 battery_force_primary:1;
0c78039f
HMH		 333 u32 input_device_registered:1;
334 u32 platform_drv_registered:1;
335 u32 platform_drv_attrs_registered:1;
336 u32 sensors_pdrv_registered:1;
337 u32 sensors_pdrv_attrs_registered:1;
338 u32 sensors_pdev_attrs_registered:1;
339 u32 hotkey_poll_active:1;
f23a5bcb 340 u32 has_adaptive_kbd:1;
0c78039f
HMH		 341} tp_features;
342
92889022
HMH		 343static struct {
344 u16 hotkey_mask_ff:1;
c7ac6291 345 u16 volume_ctrl_forbidden:1;
92889022
HMH		 346} tp_warned;
347
0c78039f
HMH		 348struct thinkpad_id_data {
349 unsigned int vendor; /* ThinkPad vendor:
350 * PCI_VENDOR_ID_IBM/PCI_VENDOR_ID_LENOVO */
351
352 char *bios_version_str; /* Something like 1ZET51WW (1.03z) */
353 char *ec_version_str; /* Something like 1ZHT51WW-1.04a */
354
846a416b
JW		 355 u32 bios_model; /* 1Y = 0x3159, 0 = unknown */
356 u32 ec_model;
357 u16 bios_release; /* 1ZETK1WW = 0x4b31, 0 = unknown */
050df107 358 u16 ec_release;
0c78039f 359
8c74adbc
HMH		 360 char *model_str; /* ThinkPad T43 */
361 char *nummodel_str; /* 9384A9C for a 9384-A9C model */
0c78039f 362};
0c78039f
HMH		 363static struct thinkpad_id_data thinkpad_id;
364
8fef502e
HMH		 365static enum {
366 TPACPI_LIFE_INIT = 0,
367 TPACPI_LIFE_RUNNING,
368 TPACPI_LIFE_EXITING,
369} tpacpi_lifecycle;
370
b21a15f6
HMH		 371static int experimental;
372static u32 dbg_level;
373
e0e3c061
HMH		 374static struct workqueue_struct *tpacpi_wq;
375
75bd3bf2
HMH		 376enum led_status_t {
377 TPACPI_LED_OFF = 0,
378 TPACPI_LED_ON,
379 TPACPI_LED_BLINK,
380};
381
86ec0c2c 382/* tpacpi LED class */
4fa6811b
HMH		 383struct tpacpi_led_classdev {
384 struct led_classdev led_classdev;
edf2d778 385 int led;
4fa6811b
HMH		 386};
387
77775838
HMH		 388/* brightness level capabilities */
389static unsigned int bright_maxlvl; /* 0 = unknown */
390
a73f3091
HMH		 391#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
392static int dbg_wlswemul;
90ab5ee9 393static bool tpacpi_wlsw_emulstate;
a73f3091 394static int dbg_bluetoothemul;
90ab5ee9 395static bool tpacpi_bluetooth_emulstate;
a73f3091 396static int dbg_wwanemul;
90ab5ee9 397static bool tpacpi_wwan_emulstate;
0045c0aa 398static int dbg_uwbemul;
90ab5ee9 399static bool tpacpi_uwb_emulstate;
a73f3091
HMH		 400#endif
401
402
3dcc2c3b
HMH		 403/*************************************************************************
404 * Debugging helpers
405 */
406
0978e012
JP		 407#define dbg_printk(a_dbg_level, format, arg...) \
408do { \
409 if (dbg_level & (a_dbg_level)) \
410 printk(KERN_DEBUG pr_fmt("%s: " format), \
411 __func__, ##arg); \
412} while (0)
3dcc2c3b
HMH		 413
414#ifdef CONFIG_THINKPAD_ACPI_DEBUG
415#define vdbg_printk dbg_printk
416static const char *str_supported(int is_supported);
417#else
0978e012
JP		 418static inline const char *str_supported(int is_supported) { return ""; }
419#define vdbg_printk(a_dbg_level, format, arg...) \
efd85cf8 420 do { if (0) no_printk(format, ##arg); } while (0)
3dcc2c3b
HMH		 421#endif
422
73a94d86
HMH		 423static void tpacpi_log_usertask(const char * const what)
424{
0978e012
JP		 425 printk(KERN_DEBUG pr_fmt("%s: access by process with PID %d\n"),
426 what, task_tgid_vnr(current));
73a94d86
HMH		 427}
428
0978e012
JP		 429#define tpacpi_disclose_usertask(what, format, arg...) \
430do { \
431 if (unlikely((dbg_level & TPACPI_DBG_DISCLOSETASK) && \
432 (tpacpi_lifecycle == TPACPI_LIFE_RUNNING))) { \
433 printk(KERN_DEBUG pr_fmt("%s: PID %d: " format), \
434 what, task_tgid_vnr(current), ## arg); \
435 } \
436} while (0)
3dcc2c3b 437
7d95a3d5
HMH		 438/*
439 * Quirk handling helpers
440 *
846a416b
JW		 441 * ThinkPad IDs and versions seen in the field so far are
442 * two or three characters from the set [0-9A-Z], i.e. base 36.
7d95a3d5
HMH		 443 *
444 * We use values well outside that range as specials.
445 */
446
846a416b
JW		 447#define TPACPI_MATCH_ANY 0xffffffffU
448#define TPACPI_MATCH_ANY_VERSION 0xffffU
7d95a3d5
HMH		 449#define TPACPI_MATCH_UNKNOWN 0U
450
846a416b
JW		 451/* TPID('1', 'Y') == 0x3159 */
452#define TPID(__c1, __c2) (((__c1) << 8) | (__c2))
453#define TPID3(__c1, __c2, __c3) (((__c1) << 16) | ((__c2) << 8) | (__c3))
454#define TPVER TPID
7d95a3d5
HMH		 455
456#define TPACPI_Q_IBM(__id1, __id2, __quirk) \
457 { .vendor = PCI_VENDOR_ID_IBM, \
458 .bios = TPID(__id1, __id2), \
459 .ec = TPACPI_MATCH_ANY, \
460 .quirks = (__quirk) }
461
462#define TPACPI_Q_LNV(__id1, __id2, __quirk) \
463 { .vendor = PCI_VENDOR_ID_LENOVO, \
464 .bios = TPID(__id1, __id2), \
465 .ec = TPACPI_MATCH_ANY, \
466 .quirks = (__quirk) }
467
1a32ebb2
JW		 468#define TPACPI_Q_LNV3(__id1, __id2, __id3, __quirk) \
469 { .vendor = PCI_VENDOR_ID_LENOVO, \
470 .bios = TPID3(__id1, __id2, __id3), \
471 .ec = TPACPI_MATCH_ANY, \
472 .quirks = (__quirk) }
473
599eefff
JW		 474#define TPACPI_QEC_IBM(__id1, __id2, __quirk) \
475 { .vendor = PCI_VENDOR_ID_IBM, \
476 .bios = TPACPI_MATCH_ANY, \
477 .ec = TPID(__id1, __id2), \
478 .quirks = (__quirk) }
479
a112ceee
HMH		 480#define TPACPI_QEC_LNV(__id1, __id2, __quirk) \
481 { .vendor = PCI_VENDOR_ID_LENOVO, \
482 .bios = TPACPI_MATCH_ANY, \
483 .ec = TPID(__id1, __id2), \
484 .quirks = (__quirk) }
485
7d95a3d5
HMH		 486struct tpacpi_quirk {
487 unsigned int vendor;
846a416b
JW		 488 u32 bios;
489 u32 ec;
7d95a3d5
HMH		 490 unsigned long quirks;
491};
492
493/**
494 * tpacpi_check_quirks() - search BIOS/EC version on a list
495 * @qlist: array of &struct tpacpi_quirk
496 * @qlist_size: number of elements in @qlist
497 *
498 * Iterates over a quirks list until one is found that matches the
499 * ThinkPad's vendor, BIOS and EC model.
500 *
501 * Returns 0 if nothing matches, otherwise returns the quirks field of
502 * the matching &struct tpacpi_quirk entry.
503 *
504 * The match criteria is: vendor, ec and bios much match.
505 */
506static unsigned long __init tpacpi_check_quirks(
507 const struct tpacpi_quirk *qlist,
508 unsigned int qlist_size)
509{
510 while (qlist_size) {
511 if ((qlist->vendor == thinkpad_id.vendor ||
512 qlist->vendor == TPACPI_MATCH_ANY) &&
513 (qlist->bios == thinkpad_id.bios_model ||
514 qlist->bios == TPACPI_MATCH_ANY) &&
515 (qlist->ec == thinkpad_id.ec_model ||
516 qlist->ec == TPACPI_MATCH_ANY))
517 return qlist->quirks;
518
519 qlist_size--;
520 qlist++;
521 }
522 return 0;
523}
524
e28393c0
HMH		 525static inline bool __pure __init tpacpi_is_lenovo(void)
526{
527 return thinkpad_id.vendor == PCI_VENDOR_ID_LENOVO;
528}
529
530static inline bool __pure __init tpacpi_is_ibm(void)
531{
532 return thinkpad_id.vendor == PCI_VENDOR_ID_IBM;
533}
7d95a3d5 534
56b6aeb0
HMH		 535/****************************************************************************
536 ****************************************************************************
537 *
538 * ACPI Helpers and device model
539 *
540 ****************************************************************************
541 ****************************************************************************/
542
543/*************************************************************************
544 * ACPI basic handles
545 */
1da177e4 546
94954cc6 547static acpi_handle root_handle;
437e470c 548static acpi_handle ec_handle;
1da177e4 549
e0c7dfe7 550#define TPACPI_HANDLE(object, parent, paths...) \
1da177e4 551 static acpi_handle object##_handle; \
3bd01896 552 static const acpi_handle * const object##_parent __initconst = \
ef07a5ab
HMH		 553 &parent##_handle; \
554 static char *object##_paths[] __initdata = { paths }
1da177e4 555
e0c7dfe7
HMH		 556TPACPI_HANDLE(ecrd, ec, "ECRD"); /* 570 */
557TPACPI_HANDLE(ecwr, ec, "ECWR"); /* 570 */
78f81cc4 558
35ff8b9f
HMH		 559TPACPI_HANDLE(cmos, root, "\\UCMS", /* R50, R50e, R50p, R51, */
560 /* T4x, X31, X40 */
78f81cc4
BD		 561 "\\CMOS", /* A3x, G4x, R32, T23, T30, X22-24, X30 */
562 "\\CMS", /* R40, R40e */
56b6aeb0 563 ); /* all others */
78f81cc4 564
e0c7dfe7 565TPACPI_HANDLE(hkey, ec, "\\_SB.HKEY", /* 600e/x, 770e, 770x */
78f81cc4
BD		 566 "^HKEY", /* R30, R31 */
567 "HKEY", /* all others */
56b6aeb0 568 ); /* 570 */
78f81cc4 569
56b6aeb0
HMH		 570/*************************************************************************
571 * ACPI helpers
a8b7a662
HMH		 572 */
573
1da177e4 574static int acpi_evalf(acpi_handle handle,
eceeb437 575 int *res, char *method, char *fmt, ...)
1da177e4
LT		 576{
577 char *fmt0 = fmt;
78f81cc4 578 struct acpi_object_list params;
e0c7dfe7 579 union acpi_object in_objs[TPACPI_MAX_ACPI_ARGS];
78f81cc4
BD		 580 struct acpi_buffer result, *resultp;
581 union acpi_object out_obj;
582 acpi_status status;
583 va_list ap;
584 char res_type;
585 int success;
586 int quiet;
1da177e4
LT		 587
588 if (!*fmt) {
0978e012 589 pr_err("acpi_evalf() called with empty format\n");
1da177e4
LT		 590 return 0;
591 }
592
593 if (*fmt == 'q') {
594 quiet = 1;
595 fmt++;
596 } else
597 quiet = 0;
598
599 res_type = *(fmt++);
600
601 params.count = 0;
602 params.pointer = &in_objs[0];
603
604 va_start(ap, fmt);
605 while (*fmt) {
606 char c = *(fmt++);
607 switch (c) {
608 case 'd': /* int */
609 in_objs[params.count].integer.value = va_arg(ap, int);
610 in_objs[params.count++].type = ACPI_TYPE_INTEGER;
611 break;
78f81cc4 612 /* add more types as needed */
1da177e4 613 default:
5cac62ac
AS		 614 pr_err("acpi_evalf() called with invalid format character '%c'\n",
615 c);
21365851 616 va_end(ap);
1da177e4
LT		 617 return 0;
618 }
619 }
620 va_end(ap);
621
78f81cc4
BD		 622 if (res_type != 'v') {
623 result.length = sizeof(out_obj);
624 result.pointer = &out_obj;
625 resultp = &result;
626 } else
627 resultp = NULL;
1da177e4 628
78f81cc4 629 status = acpi_evaluate_object(handle, method, &params, resultp);
1da177e4
LT		 630
631 switch (res_type) {
78f81cc4 632 case 'd': /* int */
263f4a30
HMH		 633 success = (status == AE_OK &&
634 out_obj.type == ACPI_TYPE_INTEGER);
635 if (success && res)
eceeb437 636 *res = out_obj.integer.value;
1da177e4 637 break;
78f81cc4 638 case 'v': /* void */
1da177e4
LT		 639 success = status == AE_OK;
640 break;
78f81cc4 641 /* add more types as needed */
1da177e4 642 default:
5cac62ac
AS		 643 pr_err("acpi_evalf() called with invalid format character '%c'\n",
644 res_type);
1da177e4
LT		 645 return 0;
646 }
647
56b6aeb0 648 if (!success && !quiet)
0978e012 649 pr_err("acpi_evalf(%s, %s, ...) failed: %s\n",
263f4a30 650 method, fmt0, acpi_format_exception(status));
56b6aeb0
HMH		 651
652 return success;
653}
654
35ff8b9f 655static int acpi_ec_read(int i, u8 *p)
56b6aeb0
HMH		 656{
657 int v;
658
659 if (ecrd_handle) {
660 if (!acpi_evalf(ecrd_handle, &v, NULL, "dd", i))
661 return 0;
662 *p = v;
663 } else {
664 if (ec_read(i, p) < 0)
665 return 0;
666 }
667
668 return 1;
669}
670
671static int acpi_ec_write(int i, u8 v)
672{
673 if (ecwr_handle) {
674 if (!acpi_evalf(ecwr_handle, NULL, NULL, "vdd", i, v))
675 return 0;
676 } else {
677 if (ec_write(i, v) < 0)
678 return 0;
679 }
680
681 return 1;
682}
683
c9bea99c
HMH		 684static int issue_thinkpad_cmos_command(int cmos_cmd)
685{
686 if (!cmos_handle)
687 return -ENXIO;
688
689 if (!acpi_evalf(cmos_handle, NULL, NULL, "vd", cmos_cmd))
690 return -EIO;
691
692 return 0;
693}
694
56b6aeb0
HMH		 695/*************************************************************************
696 * ACPI device model
697 */
698
35ff8b9f
HMH		 699#define TPACPI_ACPIHANDLE_INIT(object) \
700 drv_acpi_handle_init(#object, &object##_handle, *object##_parent, \
ef07a5ab 701 object##_paths, ARRAY_SIZE(object##_paths))
f74a27d4 702
ef07a5ab
HMH		 703static void __init drv_acpi_handle_init(const char *name,
704 acpi_handle *handle, const acpi_handle parent,
705 char **paths, const int num_paths)
56b6aeb0
HMH		 706{
707 int i;
708 acpi_status status;
709
5ae930e6
HMH		 710 vdbg_printk(TPACPI_DBG_INIT, "trying to locate ACPI handle for %s\n",
711 name);
712
56b6aeb0
HMH		 713 for (i = 0; i < num_paths; i++) {
714 status = acpi_get_handle(parent, paths[i], handle);
715 if (ACPI_SUCCESS(status)) {
5ae930e6
HMH		 716 dbg_printk(TPACPI_DBG_INIT,
717 "Found ACPI handle %s for %s\n",
ef07a5ab 718 paths[i], name);
56b6aeb0
HMH		 719 return;
720 }
721 }
722
5ae930e6
HMH		 723 vdbg_printk(TPACPI_DBG_INIT, "ACPI handle for %s not found\n",
724 name);
56b6aeb0
HMH		 725 *handle = NULL;
726}
727
437e470c
HMH		 728static acpi_status __init tpacpi_acpi_handle_locate_callback(acpi_handle handle,
729 u32 level, void *context, void **return_value)
730{
46445b6b
AL		 731 struct acpi_device *dev;
732 if (!strcmp(context, "video")) {
733 if (acpi_bus_get_device(handle, &dev))
734 return AE_OK;
735 if (strcmp(ACPI_VIDEO_HID, acpi_device_hid(dev)))
736 return AE_OK;
737 }
738
437e470c
HMH		 739 *(acpi_handle *)return_value = handle;
740
741 return AE_CTRL_TERMINATE;
742}
743
744static void __init tpacpi_acpi_handle_locate(const char *name,
745 const char *hid,
746 acpi_handle *handle)
747{
748 acpi_status status;
749 acpi_handle device_found;
750
46445b6b 751 BUG_ON(!name || !handle);
437e470c
HMH		 752 vdbg_printk(TPACPI_DBG_INIT,
753 "trying to locate ACPI handle for %s, using HID %s\n",
46445b6b 754 name, hid ? hid : "NULL");
437e470c
HMH		 755
756 memset(&device_found, 0, sizeof(device_found));
757 status = acpi_get_devices(hid, tpacpi_acpi_handle_locate_callback,
758 (void *)name, &device_found);
759
760 *handle = NULL;
761
762 if (ACPI_SUCCESS(status)) {
763 *handle = device_found;
764 dbg_printk(TPACPI_DBG_INIT,
765 "Found ACPI handle for %s\n", name);
766 } else {
767 vdbg_printk(TPACPI_DBG_INIT,
768 "Could not locate an ACPI handle for %s: %s\n",
769 name, acpi_format_exception(status));
770 }
771}
772
8d376cd6 773static void dispatch_acpi_notify(acpi_handle handle, u32 event, void *data)
56b6aeb0
HMH		 774{
775 struct ibm_struct *ibm = data;
776
8fef502e
HMH		 777 if (tpacpi_lifecycle != TPACPI_LIFE_RUNNING)
778 return;
779
8d376cd6 780 if (!ibm || !ibm->acpi || !ibm->acpi->notify)
56b6aeb0
HMH		 781 return;
782
8d376cd6 783 ibm->acpi->notify(ibm, event);
56b6aeb0
HMH		 784}
785
8d376cd6 786static int __init setup_acpi_notify(struct ibm_struct *ibm)
56b6aeb0
HMH		 787{
788 acpi_status status;
5ae930e6 789 int rc;
56b6aeb0 790
8d376cd6
HMH		 791 BUG_ON(!ibm->acpi);
792
793 if (!*ibm->acpi->handle)
56b6aeb0
HMH		 794 return 0;
795
5ae930e6 796 vdbg_printk(TPACPI_DBG_INIT,
fe08bc4b
HMH		 797 "setting up ACPI notify for %s\n", ibm->name);
798
5ae930e6
HMH		 799 rc = acpi_bus_get_device(*ibm->acpi->handle, &ibm->acpi->device);
800 if (rc < 0) {
0978e012 801 pr_err("acpi_bus_get_device(%s) failed: %d\n", ibm->name, rc);
56b6aeb0
HMH		 802 return -ENODEV;
803 }
804
db89b4f0 805 ibm->acpi->device->driver_data = ibm;
8d376cd6 806 sprintf(acpi_device_class(ibm->acpi->device), "%s/%s",
e0c7dfe7 807 TPACPI_ACPI_EVENT_PREFIX,
643f12db 808 ibm->name);
56b6aeb0 809
8d376cd6
HMH		 810 status = acpi_install_notify_handler(*ibm->acpi->handle,
811 ibm->acpi->type, dispatch_acpi_notify, ibm);
56b6aeb0
HMH		 812 if (ACPI_FAILURE(status)) {
813 if (status == AE_ALREADY_EXISTS) {
5cac62ac
AS		 814 pr_notice("another device driver is already handling %s events\n",
815 ibm->name);
56b6aeb0 816 } else {
0978e012 817 pr_err("acpi_install_notify_handler(%s) failed: %s\n",
72f19921 818 ibm->name, acpi_format_exception(status));
56b6aeb0
HMH		 819 }
820 return -ENODEV;
821 }
8d376cd6 822 ibm->flags.acpi_notify_installed = 1;
56b6aeb0
HMH		 823 return 0;
824}
825
8d376cd6 826static int __init tpacpi_device_add(struct acpi_device *device)
56b6aeb0
HMH		 827{
828 return 0;
829}
830
6700121b 831static int __init register_tpacpi_subdriver(struct ibm_struct *ibm)
56b6aeb0 832{
5ae930e6 833 int rc;
56b6aeb0 834
fe08bc4b
HMH		 835 dbg_printk(TPACPI_DBG_INIT,
836 "registering %s as an ACPI driver\n", ibm->name);
837
8d376cd6
HMH		 838 BUG_ON(!ibm->acpi);
839
840 ibm->acpi->driver = kzalloc(sizeof(struct acpi_driver), GFP_KERNEL);
841 if (!ibm->acpi->driver) {
0978e012 842 pr_err("failed to allocate memory for ibm->acpi->driver\n");
5fba344c 843 return -ENOMEM;
56b6aeb0
HMH		 844 }
845
e0c7dfe7 846 sprintf(ibm->acpi->driver->name, "%s_%s", TPACPI_NAME, ibm->name);
8d376cd6 847 ibm->acpi->driver->ids = ibm->acpi->hid;
1ba90e3a 848
8d376cd6 849 ibm->acpi->driver->ops.add = &tpacpi_device_add;
56b6aeb0 850
5ae930e6
HMH		 851 rc = acpi_bus_register_driver(ibm->acpi->driver);
852 if (rc < 0) {
0978e012 853 pr_err("acpi_bus_register_driver(%s) failed: %d\n",
1ba90e3a 854 ibm->name, rc);
8d376cd6
HMH		 855 kfree(ibm->acpi->driver);
856 ibm->acpi->driver = NULL;
5ae930e6 857 } else if (!rc)
8d376cd6 858 ibm->flags.acpi_driver_registered = 1;
56b6aeb0 859
5ae930e6 860 return rc;
56b6aeb0
HMH		 861}
862
863
864/****************************************************************************
865 ****************************************************************************
866 *
867 * Procfs Helpers
868 *
869 ****************************************************************************
870 ****************************************************************************/
871
887965e6 872static int dispatch_proc_show(struct seq_file *m, void *v)
56b6aeb0 873{
887965e6 874 struct ibm_struct *ibm = m->private;
56b6aeb0
HMH		 875
876 if (!ibm || !ibm->read)
877 return -EINVAL;
887965e6
AD		 878 return ibm->read(m);
879}
56b6aeb0 880
887965e6
AD		 881static int dispatch_proc_open(struct inode *inode, struct file *file)
882{
d9dda78b 883 return single_open(file, dispatch_proc_show, PDE_DATA(inode));
56b6aeb0
HMH		 884}
885
887965e6 886static ssize_t dispatch_proc_write(struct file *file,
35ff8b9f 887 const char __user *userbuf,
887965e6 888 size_t count, loff_t *pos)
56b6aeb0 889{
d9dda78b 890 struct ibm_struct *ibm = PDE_DATA(file_inode(file));
56b6aeb0
HMH		 891 char *kernbuf;
892 int ret;
893
894 if (!ibm || !ibm->write)
895 return -EINVAL;
df11f6c5
AS		 896 if (count > PAGE_SIZE - 1)
897 return -EINVAL;
898
899 kernbuf = kmalloc(count + 1, GFP_KERNEL);
900 if (!kernbuf)
901 return -ENOMEM;
1da177e4 902
df11f6c5
AS		 903 if (copy_from_user(kernbuf, userbuf, count)) {
904 kfree(kernbuf);
905 return -EFAULT;
906 }
1da177e4 907
df11f6c5 908 kernbuf[count] = 0;
56b6aeb0
HMH		 909 ret = ibm->write(kernbuf);
910 if (ret == 0)
911 ret = count;
1da177e4 912
56b6aeb0
HMH		 913 kfree(kernbuf);
914
915 return ret;
1da177e4
LT		 916}
917
97a32539
AD		 918static const struct proc_ops dispatch_proc_ops = {
919 .proc_open = dispatch_proc_open,
920 .proc_read = seq_read,
921 .proc_lseek = seq_lseek,
922 .proc_release = single_release,
923 .proc_write = dispatch_proc_write,
887965e6
AD		 924};
925
54ae1501
HMH		 926/****************************************************************************
927 ****************************************************************************
928 *
7f5d1cd6 929 * Device model: input, hwmon and platform
54ae1501
HMH		 930 *
931 ****************************************************************************
932 ****************************************************************************/
933
94954cc6 934static struct platform_device *tpacpi_pdev;
7fd40029 935static struct platform_device *tpacpi_sensors_pdev;
1beeffe4 936static struct device *tpacpi_hwmon;
7f5d1cd6 937static struct input_dev *tpacpi_inputdev;
8523ed6f 938static struct mutex tpacpi_inputdev_send_mutex;
b21a15f6 939static LIST_HEAD(tpacpi_all_drivers);
e295e850 940
3567a4e2 941#ifdef CONFIG_PM_SLEEP
4959a781 942static int tpacpi_suspend_handler(struct device *dev)
083f1760
HMH		 943{
944 struct ibm_struct *ibm, *itmp;
945
946 list_for_each_entry_safe(ibm, itmp,
947 &tpacpi_all_drivers,
948 all_drivers) {
949 if (ibm->suspend)
fd3c3a42 950 (ibm->suspend)();
083f1760
HMH		 951 }
952
953 return 0;
954}
955
4959a781 956static int tpacpi_resume_handler(struct device *dev)
e295e850
HMH		 957{
958 struct ibm_struct *ibm, *itmp;
959
960 list_for_each_entry_safe(ibm, itmp,
961 &tpacpi_all_drivers,
962 all_drivers) {
963 if (ibm->resume)
964 (ibm->resume)();
965 }
966
967 return 0;
968}
3567a4e2 969#endif
e295e850 970
4959a781
RW		 971static SIMPLE_DEV_PM_OPS(tpacpi_pm,
972 tpacpi_suspend_handler, tpacpi_resume_handler);
973
90d9d3c7
HMH		 974static void tpacpi_shutdown_handler(struct platform_device *pdev)
975{
976 struct ibm_struct *ibm, *itmp;
977
978 list_for_each_entry_safe(ibm, itmp,
979 &tpacpi_all_drivers,
980 all_drivers) {
981 if (ibm->shutdown)
982 (ibm->shutdown)();
983 }
984}
985
54ae1501
HMH		 986static struct platform_driver tpacpi_pdriver = {
987 .driver = {
e0c7dfe7 988 .name = TPACPI_DRVR_NAME,
4959a781 989 .pm = &tpacpi_pm,
54ae1501 990 },
90d9d3c7 991 .shutdown = tpacpi_shutdown_handler,
54ae1501
HMH		 992};
993
7fd40029
HMH		 994static struct platform_driver tpacpi_hwmon_pdriver = {
995 .driver = {
e0c7dfe7 996 .name = TPACPI_HWMON_DRVR_NAME,
7fd40029
HMH		 997 },
998};
54ae1501 999
176750d6 1000/*************************************************************************
b21a15f6 1001 * sysfs support helpers
176750d6
HMH		 1002 */
1003
b21a15f6
HMH		 1004struct attribute_set {
1005 unsigned int members, max_members;
1006 struct attribute_group group;
176750d6
HMH		 1007};
1008
7252374a
HMH		 1009struct attribute_set_obj {
1010 struct attribute_set s;
1011 struct attribute *a;
1012} __attribute__((packed));
1013
1014static struct attribute_set *create_attr_set(unsigned int max_members,
35ff8b9f 1015 const char *name)
7252374a
HMH		 1016{
1017 struct attribute_set_obj *sobj;
1018
1019 if (max_members == 0)
1020 return NULL;
1021
1022 /* Allocates space for implicit NULL at the end too */
1023 sobj = kzalloc(sizeof(struct attribute_set_obj) +
1024 max_members * sizeof(struct attribute *),
1025 GFP_KERNEL);
1026 if (!sobj)
1027 return NULL;
1028 sobj->s.max_members = max_members;
1029 sobj->s.group.attrs = &sobj->a;
1030 sobj->s.group.name = name;
1031
1032 return &sobj->s;
1033}
1034
f74a27d4 1035#define destroy_attr_set(_set) \
06706da2 1036 kfree(_set)
f74a27d4 1037
7252374a 1038/* not multi-threaded safe, use it in a single thread per set */
35ff8b9f 1039static int add_to_attr_set(struct attribute_set *s, struct attribute *attr)
7252374a
HMH		 1040{
1041 if (!s || !attr)
1042 return -EINVAL;
1043
1044 if (s->members >= s->max_members)
1045 return -ENOMEM;
1046
1047 s->group.attrs[s->members] = attr;
1048 s->members++;
1049
1050 return 0;
1051}
1052
35ff8b9f 1053static int add_many_to_attr_set(struct attribute_set *s,
7252374a
HMH		 1054 struct attribute **attr,
1055 unsigned int count)
1056{
1057 int i, res;
1058
1059 for (i = 0; i < count; i++) {
1060 res = add_to_attr_set(s, attr[i]);
1061 if (res)
1062 return res;
1063 }
1064
1065 return 0;
1066}
1067
35ff8b9f 1068static void delete_attr_set(struct attribute_set *s, struct kobject *kobj)
7252374a
HMH		 1069{
1070 sysfs_remove_group(kobj, &s->group);
1071 destroy_attr_set(s);
1072}
1073
f74a27d4
HMH		 1074#define register_attr_set_with_sysfs(_attr_set, _kobj) \
1075 sysfs_create_group(_kobj, &_attr_set->group)
1076
7252374a
HMH		 1077static int parse_strtoul(const char *buf,
1078 unsigned long max, unsigned long *value)
1079{
1080 char *endp;
1081
e7d2860b
AGR		 1082 *value = simple_strtoul(skip_spaces(buf), &endp, 0);
1083 endp = skip_spaces(endp);
7252374a
HMH		 1084 if (*endp || *value > max)
1085 return -EINVAL;
1086
1087 return 0;
1088}
1089
d64c81c4
HMH		 1090static void tpacpi_disable_brightness_delay(void)
1091{
1092 if (acpi_evalf(hkey_handle, NULL, "PWMS", "qvd", 0))
0978e012 1093 pr_notice("ACPI backlight control delay disabled\n");
d64c81c4
HMH		 1094}
1095
19d337df
JB		 1096static void printk_deprecated_attribute(const char * const what,
1097 const char * const details)
1098{
1099 tpacpi_log_usertask("deprecated sysfs attribute");
5cac62ac 1100 pr_warn("WARNING: sysfs attribute %s is deprecated and will be removed. %s\n",
19d337df
JB		 1101 what, details);
1102}
1103
1104/*************************************************************************
1105 * rfkill and radio control support helpers
1106 */
1107
1108/*
1109 * ThinkPad-ACPI firmware handling model:
1110 *
1111 * WLSW (master wireless switch) is event-driven, and is common to all
1112 * firmware-controlled radios. It cannot be controlled, just monitored,
1113 * as expected. It overrides all radio state in firmware
1114 *
1115 * The kernel, a masked-off hotkey, and WLSW can change the radio state
1116 * (TODO: verify how WLSW interacts with the returned radio state).
1117 *
1118 * The only time there are shadow radio state changes, is when
1119 * masked-off hotkeys are used.
1120 */
1121
1122/*
1123 * Internal driver API for radio state:
1124 *
1125 * int: < 0 = error, otherwise enum tpacpi_rfkill_state
1126 * bool: true means radio blocked (off)
1127 */
1128enum tpacpi_rfkill_state {
1129 TPACPI_RFK_RADIO_OFF = 0,
1130 TPACPI_RFK_RADIO_ON
1131};
1132
1133/* rfkill switches */
1134enum tpacpi_rfk_id {
1135 TPACPI_RFK_BLUETOOTH_SW_ID = 0,
1136 TPACPI_RFK_WWAN_SW_ID,
1137 TPACPI_RFK_UWB_SW_ID,
1138 TPACPI_RFK_SW_MAX
1139};
1140
1141static const char *tpacpi_rfkill_names[] = {
1142 [TPACPI_RFK_BLUETOOTH_SW_ID] = "bluetooth",
1143 [TPACPI_RFK_WWAN_SW_ID] = "wwan",
1144 [TPACPI_RFK_UWB_SW_ID] = "uwb",
1145 [TPACPI_RFK_SW_MAX] = NULL
1146};
1147
1148/* ThinkPad-ACPI rfkill subdriver */
1149struct tpacpi_rfk {
1150 struct rfkill *rfkill;
1151 enum tpacpi_rfk_id id;
1152 const struct tpacpi_rfk_ops *ops;
1153};
1154
1155struct tpacpi_rfk_ops {
1156 /* firmware interface */
1157 int (*get_status)(void);
1158 int (*set_status)(const enum tpacpi_rfkill_state);
1159};
1160
1161static struct tpacpi_rfk *tpacpi_rfkill_switches[TPACPI_RFK_SW_MAX];
1162
1163/* Query FW and update rfkill sw state for a given rfkill switch */
1164static int tpacpi_rfk_update_swstate(const struct tpacpi_rfk *tp_rfk)
1165{
1166 int status;
1167
1168 if (!tp_rfk)
1169 return -ENODEV;
1170
1171 status = (tp_rfk->ops->get_status)();
1172 if (status < 0)
1173 return status;
1174
1175 rfkill_set_sw_state(tp_rfk->rfkill,
1176 (status == TPACPI_RFK_RADIO_OFF));
1177
1178 return status;
1179}
1180
19d337df
JB		 1181/*
1182 * Sync the HW-blocking state of all rfkill switches,
1183 * do notice it causes the rfkill core to schedule uevents
1184 */
1185static void tpacpi_rfk_update_hwblock_state(bool blocked)
1186{
1187 unsigned int i;
1188 struct tpacpi_rfk *tp_rfk;
1189
1190 for (i = 0; i < TPACPI_RFK_SW_MAX; i++) {
1191 tp_rfk = tpacpi_rfkill_switches[i];
1192 if (tp_rfk) {
1193 if (rfkill_set_hw_state(tp_rfk->rfkill,
1194 blocked)) {
1195 /* ignore -- we track sw block */
1196 }
1197 }
1198 }
1199}
1200
1201/* Call to get the WLSW state from the firmware */
1202static int hotkey_get_wlsw(void);
1203
1204/* Call to query WLSW state and update all rfkill switches */
1205static bool tpacpi_rfk_check_hwblock_state(void)
1206{
1207 int res = hotkey_get_wlsw();
1208 int hw_blocked;
1209
1210 /* When unknown or unsupported, we have to assume it is unblocked */
1211 if (res < 0)
1212 return false;
1213
1214 hw_blocked = (res == TPACPI_RFK_RADIO_OFF);
1215 tpacpi_rfk_update_hwblock_state(hw_blocked);
1216
1217 return hw_blocked;
1218}
1219
1220static int tpacpi_rfk_hook_set_block(void *data, bool blocked)
1221{
1222 struct tpacpi_rfk *tp_rfk = data;
1223 int res;
1224
1225 dbg_printk(TPACPI_DBG_RFKILL,
1226 "request to change radio state to %s\n",
1227 blocked ? "blocked" : "unblocked");
1228
1229 /* try to set radio state */
1230 res = (tp_rfk->ops->set_status)(blocked ?
1231 TPACPI_RFK_RADIO_OFF : TPACPI_RFK_RADIO_ON);
1232
1233 /* and update the rfkill core with whatever the FW really did */
1234 tpacpi_rfk_update_swstate(tp_rfk);
1235
1236 return (res < 0) ? res : 0;
1237}
1238
1239static const struct rfkill_ops tpacpi_rfk_rfkill_ops = {
1240 .set_block = tpacpi_rfk_hook_set_block,
1241};
1242
1243static int __init tpacpi_new_rfkill(const enum tpacpi_rfk_id id,
1244 const struct tpacpi_rfk_ops *tp_rfkops,
0e74dc26
HMH		 1245 const enum rfkill_type rfktype,
1246 const char *name,
19d337df 1247 const bool set_default)
0e74dc26 1248{
19d337df 1249 struct tpacpi_rfk *atp_rfk;
0e74dc26 1250 int res;
06d5caf4 1251 bool sw_state = false;
5451a923 1252 bool hw_state;
06d5caf4 1253 int sw_status;
90d9d3c7 1254
19d337df
JB		 1255 BUG_ON(id >= TPACPI_RFK_SW_MAX || tpacpi_rfkill_switches[id]);
1256
19d337df
JB		 1257 atp_rfk = kzalloc(sizeof(struct tpacpi_rfk), GFP_KERNEL);
1258 if (atp_rfk)
1259 atp_rfk->rfkill = rfkill_alloc(name,
1260 &tpacpi_pdev->dev,
1261 rfktype,
1262 &tpacpi_rfk_rfkill_ops,
1263 atp_rfk);
1264 if (!atp_rfk || !atp_rfk->rfkill) {
0978e012 1265 pr_err("failed to allocate memory for rfkill class\n");
19d337df 1266 kfree(atp_rfk);
0e74dc26
HMH		 1267 return -ENOMEM;
1268 }
1269
19d337df
JB		 1270 atp_rfk->id = id;
1271 atp_rfk->ops = tp_rfkops;
0e74dc26 1272
06d5caf4
AJ		 1273 sw_status = (tp_rfkops->get_status)();
1274 if (sw_status < 0) {
0978e012
JP		 1275 pr_err("failed to read initial state for %s, error %d\n",
1276 name, sw_status);
b3fa1329 1277 } else {
06d5caf4 1278 sw_state = (sw_status == TPACPI_RFK_RADIO_OFF);
b3fa1329
AJ		 1279 if (set_default) {
1280 /* try to keep the initial state, since we ask the
1281 * firmware to preserve it across S5 in NVRAM */
06d5caf4 1282 rfkill_init_sw_state(atp_rfk->rfkill, sw_state);
b3fa1329
AJ		 1283 }
1284 }
5451a923
HMH		 1285 hw_state = tpacpi_rfk_check_hwblock_state();
1286 rfkill_set_hw_state(atp_rfk->rfkill, hw_state);
19d337df
JB		 1287
1288 res = rfkill_register(atp_rfk->rfkill);
0e74dc26 1289 if (res < 0) {
0978e012 1290 pr_err("failed to register %s rfkill switch: %d\n", name, res);
19d337df
JB		 1291 rfkill_destroy(atp_rfk->rfkill);
1292 kfree(atp_rfk);
0e74dc26
HMH		 1293 return res;
1294 }
1295
19d337df 1296 tpacpi_rfkill_switches[id] = atp_rfk;
5451a923 1297
0978e012 1298 pr_info("rfkill switch %s: radio is %sblocked\n",
5451a923 1299 name, (sw_state || hw_state) ? "" : "un");
0e74dc26
HMH		 1300 return 0;
1301}
1302
19d337df 1303static void tpacpi_destroy_rfkill(const enum tpacpi_rfk_id id)
73a94d86 1304{
19d337df
JB		 1305 struct tpacpi_rfk *tp_rfk;
1306
1307 BUG_ON(id >= TPACPI_RFK_SW_MAX);
1308
1309 tp_rfk = tpacpi_rfkill_switches[id];
1310 if (tp_rfk) {
1311 rfkill_unregister(tp_rfk->rfkill);
5f0dadb4 1312 rfkill_destroy(tp_rfk->rfkill);
19d337df
JB		 1313 tpacpi_rfkill_switches[id] = NULL;
1314 kfree(tp_rfk);
1315 }
73a94d86
HMH		 1316}
1317
1318static void printk_deprecated_rfkill_attribute(const char * const what)
1319{
1320 printk_deprecated_attribute(what,
1321 "Please switch to generic rfkill before year 2010");
1322}
1323
19d337df
JB		 1324/* sysfs <radio> enable ------------------------------------------------ */
1325static ssize_t tpacpi_rfk_sysfs_enable_show(const enum tpacpi_rfk_id id,
1326 struct device_attribute *attr,
1327 char *buf)
1328{
1329 int status;
1330
1331 printk_deprecated_rfkill_attribute(attr->attr.name);
1332
1333 /* This is in the ABI... */
1334 if (tpacpi_rfk_check_hwblock_state()) {
1335 status = TPACPI_RFK_RADIO_OFF;
1336 } else {
1337 status = tpacpi_rfk_update_swstate(tpacpi_rfkill_switches[id]);
1338 if (status < 0)
1339 return status;
1340 }
1341
1342 return snprintf(buf, PAGE_SIZE, "%d\n",
1343 (status == TPACPI_RFK_RADIO_ON) ? 1 : 0);
1344}
1345
1346static ssize_t tpacpi_rfk_sysfs_enable_store(const enum tpacpi_rfk_id id,
1347 struct device_attribute *attr,
1348 const char *buf, size_t count)
1349{
1350 unsigned long t;
1351 int res;
1352
1353 printk_deprecated_rfkill_attribute(attr->attr.name);
1354
1355 if (parse_strtoul(buf, 1, &t))
1356 return -EINVAL;
1357
1358 tpacpi_disclose_usertask(attr->attr.name, "set to %ld\n", t);
1359
1360 /* This is in the ABI... */
1361 if (tpacpi_rfk_check_hwblock_state() && !!t)
1362 return -EPERM;
1363
1364 res = tpacpi_rfkill_switches[id]->ops->set_status((!!t) ?
1365 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF);
1366 tpacpi_rfk_update_swstate(tpacpi_rfkill_switches[id]);
1367
1368 return (res < 0) ? res : count;
1369}
1370
1371/* procfs -------------------------------------------------------------- */
887965e6 1372static int tpacpi_rfk_procfs_read(const enum tpacpi_rfk_id id, struct seq_file *m)
19d337df 1373{
19d337df 1374 if (id >= TPACPI_RFK_SW_MAX)
887965e6 1375 seq_printf(m, "status:\t\tnot supported\n");
19d337df
JB		 1376 else {
1377 int status;
1378
1379 /* This is in the ABI... */
1380 if (tpacpi_rfk_check_hwblock_state()) {
1381 status = TPACPI_RFK_RADIO_OFF;
1382 } else {
1383 status = tpacpi_rfk_update_swstate(
1384 tpacpi_rfkill_switches[id]);
1385 if (status < 0)
1386 return status;
1387 }
1388
887965e6 1389 seq_printf(m, "status:\t\t%s\n",
19d337df
JB		 1390 (status == TPACPI_RFK_RADIO_ON) ?
1391 "enabled" : "disabled");
887965e6 1392 seq_printf(m, "commands:\tenable, disable\n");
19d337df
JB		 1393 }
1394
887965e6 1395 return 0;
19d337df
JB		 1396}
1397
1398static int tpacpi_rfk_procfs_write(const enum tpacpi_rfk_id id, char *buf)
1399{
1400 char *cmd;
1401 int status = -1;
1402 int res = 0;
1403
1404 if (id >= TPACPI_RFK_SW_MAX)
1405 return -ENODEV;
1406
be51bd45 1407 while ((cmd = strsep(&buf, ","))) {
19d337df
JB		 1408 if (strlencmp(cmd, "enable") == 0)
1409 status = TPACPI_RFK_RADIO_ON;
1410 else if (strlencmp(cmd, "disable") == 0)
1411 status = TPACPI_RFK_RADIO_OFF;
1412 else
1413 return -EINVAL;
1414 }
1415
1416 if (status != -1) {
1417 tpacpi_disclose_usertask("procfs", "attempt to %s %s\n",
1418 (status == TPACPI_RFK_RADIO_ON) ?
1419 "enable" : "disable",
1420 tpacpi_rfkill_names[id]);
1421 res = (tpacpi_rfkill_switches[id]->ops->set_status)(status);
1422 tpacpi_rfk_update_swstate(tpacpi_rfkill_switches[id]);
1423 }
1424
1425 return res;
1426}
1427
56b6aeb0 1428/*************************************************************************
b21a15f6 1429 * thinkpad-acpi driver attributes
56b6aeb0
HMH		 1430 */
1431
b21a15f6 1432/* interface_version --------------------------------------------------- */
ac3054c4 1433static ssize_t interface_version_show(struct device_driver *drv, char *buf)
1da177e4 1434{
b21a15f6
HMH		 1435 return snprintf(buf, PAGE_SIZE, "0x%08x\n", TPACPI_SYSFS_VERSION);
1436}
ac3054c4 1437static DRIVER_ATTR_RO(interface_version);
b21a15f6
HMH		 1438
1439/* debug_level --------------------------------------------------------- */
ac3054c4 1440static ssize_t debug_level_show(struct device_driver *drv, char *buf)
b21a15f6
HMH		 1441{
1442 return snprintf(buf, PAGE_SIZE, "0x%04x\n", dbg_level);
1443}
1444
ac3054c4
GKH		 1445static ssize_t debug_level_store(struct device_driver *drv, const char *buf,
1446 size_t count)
b21a15f6
HMH		 1447{
1448 unsigned long t;
1449
1450 if (parse_strtoul(buf, 0xffff, &t))
1451 return -EINVAL;
1452
1453 dbg_level = t;
1454
1455 return count;
1456}
ac3054c4 1457static DRIVER_ATTR_RW(debug_level);
b21a15f6
HMH		 1458
1459/* version ------------------------------------------------------------- */
ac3054c4 1460static ssize_t version_show(struct device_driver *drv, char *buf)
b21a15f6 1461{
35ff8b9f
HMH		 1462 return snprintf(buf, PAGE_SIZE, "%s v%s\n",
1463 TPACPI_DESC, TPACPI_VERSION);
b21a15f6 1464}
ac3054c4 1465static DRIVER_ATTR_RO(version);
b21a15f6
HMH		 1466
1467/* --------------------------------------------------------------------- */
1468
a73f3091
HMH		 1469#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
1470
a73f3091 1471/* wlsw_emulstate ------------------------------------------------------ */
ac3054c4 1472static ssize_t wlsw_emulstate_show(struct device_driver *drv, char *buf)
a73f3091
HMH		 1473{
1474 return snprintf(buf, PAGE_SIZE, "%d\n", !!tpacpi_wlsw_emulstate);
1475}
1476
ac3054c4
GKH		 1477static ssize_t wlsw_emulstate_store(struct device_driver *drv, const char *buf,
1478 size_t count)
a73f3091
HMH		 1479{
1480 unsigned long t;
1481
1482 if (parse_strtoul(buf, 1, &t))
1483 return -EINVAL;
1484
19d337df 1485 if (tpacpi_wlsw_emulstate != !!t) {
a73f3091 1486 tpacpi_wlsw_emulstate = !!t;
19d337df
JB		 1487 tpacpi_rfk_update_hwblock_state(!t); /* negative logic */
1488 }
a73f3091
HMH		 1489
1490 return count;
1491}
ac3054c4 1492static DRIVER_ATTR_RW(wlsw_emulstate);
a73f3091
HMH		 1493
1494/* bluetooth_emulstate ------------------------------------------------- */
ac3054c4 1495static ssize_t bluetooth_emulstate_show(struct device_driver *drv, char *buf)
a73f3091
HMH		 1496{
1497 return snprintf(buf, PAGE_SIZE, "%d\n", !!tpacpi_bluetooth_emulstate);
1498}
1499
ac3054c4
GKH		 1500static ssize_t bluetooth_emulstate_store(struct device_driver *drv,
1501 const char *buf, size_t count)
a73f3091
HMH		 1502{
1503 unsigned long t;
1504
1505 if (parse_strtoul(buf, 1, &t))
1506 return -EINVAL;
1507
1508 tpacpi_bluetooth_emulstate = !!t;
1509
1510 return count;
1511}
ac3054c4 1512static DRIVER_ATTR_RW(bluetooth_emulstate);
a73f3091
HMH		 1513
1514/* wwan_emulstate ------------------------------------------------- */
ac3054c4 1515static ssize_t wwan_emulstate_show(struct device_driver *drv, char *buf)
a73f3091
HMH		 1516{
1517 return snprintf(buf, PAGE_SIZE, "%d\n", !!tpacpi_wwan_emulstate);
1518}
1519
ac3054c4
GKH		 1520static ssize_t wwan_emulstate_store(struct device_driver *drv, const char *buf,
1521 size_t count)
a73f3091
HMH		 1522{
1523 unsigned long t;
1524
1525 if (parse_strtoul(buf, 1, &t))
1526 return -EINVAL;
1527
1528 tpacpi_wwan_emulstate = !!t;
1529
1530 return count;
1531}
ac3054c4 1532static DRIVER_ATTR_RW(wwan_emulstate);
a73f3091 1533
0045c0aa 1534/* uwb_emulstate ------------------------------------------------- */
ac3054c4 1535static ssize_t uwb_emulstate_show(struct device_driver *drv, char *buf)
0045c0aa
HMH		 1536{
1537 return snprintf(buf, PAGE_SIZE, "%d\n", !!tpacpi_uwb_emulstate);
1538}
1539
ac3054c4
GKH		 1540static ssize_t uwb_emulstate_store(struct device_driver *drv, const char *buf,
1541 size_t count)
0045c0aa
HMH		 1542{
1543 unsigned long t;
1544
1545 if (parse_strtoul(buf, 1, &t))
1546 return -EINVAL;
1547
1548 tpacpi_uwb_emulstate = !!t;
1549
1550 return count;
1551}
ac3054c4 1552static DRIVER_ATTR_RW(uwb_emulstate);
a73f3091
HMH		 1553#endif
1554
1555/* --------------------------------------------------------------------- */
1556
35ff8b9f 1557static struct driver_attribute *tpacpi_driver_attributes[] = {
b21a15f6
HMH		 1558 &driver_attr_debug_level, &driver_attr_version,
1559 &driver_attr_interface_version,
1560};
1561
1562static int __init tpacpi_create_driver_attributes(struct device_driver *drv)
1563{
1564 int i, res;
1565
1566 i = 0;
1567 res = 0;
1568 while (!res && i < ARRAY_SIZE(tpacpi_driver_attributes)) {
1569 res = driver_create_file(drv, tpacpi_driver_attributes[i]);
1570 i++;
1571 }
1572
a73f3091
HMH		 1573#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
1574 if (!res && dbg_wlswemul)
1575 res = driver_create_file(drv, &driver_attr_wlsw_emulstate);
1576 if (!res && dbg_bluetoothemul)
1577 res = driver_create_file(drv, &driver_attr_bluetooth_emulstate);
1578 if (!res && dbg_wwanemul)
1579 res = driver_create_file(drv, &driver_attr_wwan_emulstate);
0045c0aa
HMH		 1580 if (!res && dbg_uwbemul)
1581 res = driver_create_file(drv, &driver_attr_uwb_emulstate);
a73f3091
HMH		 1582#endif
1583
b21a15f6
HMH		 1584 return res;
1585}
1586
1587static void tpacpi_remove_driver_attributes(struct device_driver *drv)
1588{
1589 int i;
1590
35ff8b9f 1591 for (i = 0; i < ARRAY_SIZE(tpacpi_driver_attributes); i++)
b21a15f6 1592 driver_remove_file(drv, tpacpi_driver_attributes[i]);
a73f3091
HMH		 1593
1594#ifdef THINKPAD_ACPI_DEBUGFACILITIES
1595 driver_remove_file(drv, &driver_attr_wlsw_emulstate);
1596 driver_remove_file(drv, &driver_attr_bluetooth_emulstate);
1597 driver_remove_file(drv, &driver_attr_wwan_emulstate);
0045c0aa 1598 driver_remove_file(drv, &driver_attr_uwb_emulstate);
a73f3091 1599#endif
b21a15f6
HMH		 1600}
1601
600a99fa
HMH		 1602/*************************************************************************
1603 * Firmware Data
1604 */
1605
1606/*
1607 * Table of recommended minimum BIOS versions
1608 *
1609 * Reasons for listing:
9ddc5b6f 1610 * 1. Stable BIOS, listed because the unknown amount of
600a99fa
HMH		 1611 * bugs and bad ACPI behaviour on older versions
1612 *
1613 * 2. BIOS or EC fw with known bugs that trigger on Linux
1614 *
1615 * 3. BIOS with known reduced functionality in older versions
1616 *
1617 * We recommend the latest BIOS and EC version.
1618 * We only support the latest BIOS and EC fw version as a rule.
1619 *
1620 * Sources: IBM ThinkPad Public Web Documents (update changelogs),
1621 * Information from users in ThinkWiki
e675abaf
HMH		 1622 *
1623 * WARNING: we use this table also to detect that the machine is
1624 * a ThinkPad in some cases, so don't remove entries lightly.
600a99fa
HMH		 1625 */
1626
1627#define TPV_Q(__v, __id1, __id2, __bv1, __bv2) \
1628 { .vendor = (__v), \
1629 .bios = TPID(__id1, __id2), \
1630 .ec = TPACPI_MATCH_ANY, \
846a416b
JW		 1631 .quirks = TPACPI_MATCH_ANY_VERSION << 16 \
1632 | TPVER(__bv1, __bv2) }
600a99fa
HMH		 1633
1634#define TPV_Q_X(__v, __bid1, __bid2, __bv1, __bv2, \
275014ae 1635 __eid, __ev1, __ev2) \
600a99fa
HMH		 1636 { .vendor = (__v), \
1637 .bios = TPID(__bid1, __bid2), \
275014ae 1638 .ec = __eid, \
846a416b
JW		 1639 .quirks = TPVER(__ev1, __ev2) << 16 \
1640 | TPVER(__bv1, __bv2) }
600a99fa
HMH		 1641
1642#define TPV_QI0(__id1, __id2, __bv1, __bv2) \
1643 TPV_Q(PCI_VENDOR_ID_IBM, __id1, __id2, __bv1, __bv2)
1644
275014ae 1645/* Outdated IBM BIOSes often lack the EC id string */
600a99fa
HMH		 1646#define TPV_QI1(__id1, __id2, __bv1, __bv2, __ev1, __ev2) \
1647 TPV_Q_X(PCI_VENDOR_ID_IBM, __id1, __id2, \
275014ae
HMH		 1648 __bv1, __bv2, TPID(__id1, __id2), \
1649 __ev1, __ev2), \
1650 TPV_Q_X(PCI_VENDOR_ID_IBM, __id1, __id2, \
1651 __bv1, __bv2, TPACPI_MATCH_UNKNOWN, \
1652 __ev1, __ev2)
600a99fa 1653
275014ae 1654/* Outdated IBM BIOSes often lack the EC id string */
600a99fa
HMH		 1655#define TPV_QI2(__bid1, __bid2, __bv1, __bv2, \
1656 __eid1, __eid2, __ev1, __ev2) \
1657 TPV_Q_X(PCI_VENDOR_ID_IBM, __bid1, __bid2, \
275014ae
HMH		 1658 __bv1, __bv2, TPID(__eid1, __eid2), \
1659 __ev1, __ev2), \
1660 TPV_Q_X(PCI_VENDOR_ID_IBM, __bid1, __bid2, \
1661 __bv1, __bv2, TPACPI_MATCH_UNKNOWN, \
1662 __ev1, __ev2)
600a99fa
HMH		 1663
1664#define TPV_QL0(__id1, __id2, __bv1, __bv2) \
1665 TPV_Q(PCI_VENDOR_ID_LENOVO, __id1, __id2, __bv1, __bv2)
1666
1667#define TPV_QL1(__id1, __id2, __bv1, __bv2, __ev1, __ev2) \
1668 TPV_Q_X(PCI_VENDOR_ID_LENOVO, __id1, __id2, \
275014ae
HMH		 1669 __bv1, __bv2, TPID(__id1, __id2), \
1670 __ev1, __ev2)
600a99fa
HMH		 1671
1672#define TPV_QL2(__bid1, __bid2, __bv1, __bv2, \
1673 __eid1, __eid2, __ev1, __ev2) \
1674 TPV_Q_X(PCI_VENDOR_ID_LENOVO, __bid1, __bid2, \
275014ae
HMH		 1675 __bv1, __bv2, TPID(__eid1, __eid2), \
1676 __ev1, __ev2)
600a99fa
HMH		 1677
1678static const struct tpacpi_quirk tpacpi_bios_version_qtable[] __initconst = {
1679 /* Numeric models ------------------ */
1680 /* FW MODEL BIOS VERS */
1681 TPV_QI0('I', 'M', '6', '5'), /* 570 */
1682 TPV_QI0('I', 'U', '2', '6'), /* 570E */
1683 TPV_QI0('I', 'B', '5', '4'), /* 600 */
1684 TPV_QI0('I', 'H', '4', '7'), /* 600E */
1685 TPV_QI0('I', 'N', '3', '6'), /* 600E */
1686 TPV_QI0('I', 'T', '5', '5'), /* 600X */
1687 TPV_QI0('I', 'D', '4', '8'), /* 770, 770E, 770ED */
1688 TPV_QI0('I', 'I', '4', '2'), /* 770X */
1689 TPV_QI0('I', 'O', '2', '3'), /* 770Z */
1690
1691 /* A-series ------------------------- */
1692 /* FW MODEL BIOS VERS EC VERS */
1693 TPV_QI0('I', 'W', '5', '9'), /* A20m */
1694 TPV_QI0('I', 'V', '6', '9'), /* A20p */
1695 TPV_QI0('1', '0', '2', '6'), /* A21e, A22e */
1696 TPV_QI0('K', 'U', '3', '6'), /* A21e */
1697 TPV_QI0('K', 'X', '3', '6'), /* A21m, A22m */
1698 TPV_QI0('K', 'Y', '3', '8'), /* A21p, A22p */
1699 TPV_QI0('1', 'B', '1', '7'), /* A22e */
1700 TPV_QI0('1', '3', '2', '0'), /* A22m */
1701 TPV_QI0('1', 'E', '7', '3'), /* A30/p (0) */
1702 TPV_QI1('1', 'G', '4', '1', '1', '7'), /* A31/p (0) */
1703 TPV_QI1('1', 'N', '1', '6', '0', '7'), /* A31/p (0) */
1704
1705 /* G-series ------------------------- */
1706 /* FW MODEL BIOS VERS */
1707 TPV_QI0('1', 'T', 'A', '6'), /* G40 */
1708 TPV_QI0('1', 'X', '5', '7'), /* G41 */
1709
1710 /* R-series, T-series --------------- */
1711 /* FW MODEL BIOS VERS EC VERS */
1712 TPV_QI0('1', 'C', 'F', '0'), /* R30 */
1713 TPV_QI0('1', 'F', 'F', '1'), /* R31 */
1714 TPV_QI0('1', 'M', '9', '7'), /* R32 */
1715 TPV_QI0('1', 'O', '6', '1'), /* R40 */
1716 TPV_QI0('1', 'P', '6', '5'), /* R40 */
1717 TPV_QI0('1', 'S', '7', '0'), /* R40e */
1718 TPV_QI1('1', 'R', 'D', 'R', '7', '1'), /* R50/p, R51,
1719 T40/p, T41/p, T42/p (1) */
1720 TPV_QI1('1', 'V', '7', '1', '2', '8'), /* R50e, R51 (1) */
1721 TPV_QI1('7', '8', '7', '1', '0', '6'), /* R51e (1) */
1722 TPV_QI1('7', '6', '6', '9', '1', '6'), /* R52 (1) */
1723 TPV_QI1('7', '0', '6', '9', '2', '8'), /* R52, T43 (1) */
1724
1725 TPV_QI0('I', 'Y', '6', '1'), /* T20 */
1726 TPV_QI0('K', 'Z', '3', '4'), /* T21 */
1727 TPV_QI0('1', '6', '3', '2'), /* T22 */
1728 TPV_QI1('1', 'A', '6', '4', '2', '3'), /* T23 (0) */
1729 TPV_QI1('1', 'I', '7', '1', '2', '0'), /* T30 (0) */
1730 TPV_QI1('1', 'Y', '6', '5', '2', '9'), /* T43/p (1) */
1731
1732 TPV_QL1('7', '9', 'E', '3', '5', '0'), /* T60/p */
1733 TPV_QL1('7', 'C', 'D', '2', '2', '2'), /* R60, R60i */
90765c6a 1734 TPV_QL1('7', 'E', 'D', '0', '1', '5'), /* R60e, R60i */
600a99fa
HMH		 1735
1736 /* BIOS FW BIOS VERS EC FW EC VERS */
1737 TPV_QI2('1', 'W', '9', '0', '1', 'V', '2', '8'), /* R50e (1) */
1738 TPV_QL2('7', 'I', '3', '4', '7', '9', '5', '0'), /* T60/p wide */
1739
1740 /* X-series ------------------------- */
1741 /* FW MODEL BIOS VERS EC VERS */
1742 TPV_QI0('I', 'Z', '9', 'D'), /* X20, X21 */
1743 TPV_QI0('1', 'D', '7', '0'), /* X22, X23, X24 */
1744 TPV_QI1('1', 'K', '4', '8', '1', '8'), /* X30 (0) */
1745 TPV_QI1('1', 'Q', '9', '7', '2', '3'), /* X31, X32 (0) */
1746 TPV_QI1('1', 'U', 'D', '3', 'B', '2'), /* X40 (0) */
1747 TPV_QI1('7', '4', '6', '4', '2', '7'), /* X41 (0) */
1748 TPV_QI1('7', '5', '6', '0', '2', '0'), /* X41t (0) */
1749
90765c6a
HMH		 1750 TPV_QL1('7', 'B', 'D', '7', '4', '0'), /* X60/s */
1751 TPV_QL1('7', 'J', '3', '0', '1', '3'), /* X60t */
600a99fa
HMH		 1752
1753 /* (0) - older versions lack DMI EC fw string and functionality */
1754 /* (1) - older versions known to lack functionality */
1755};
1756
1757#undef TPV_QL1
1758#undef TPV_QL0
1759#undef TPV_QI2
1760#undef TPV_QI1
1761#undef TPV_QI0
1762#undef TPV_Q_X
1763#undef TPV_Q
1764
1765static void __init tpacpi_check_outdated_fw(void)
1766{
1767 unsigned long fwvers;
1768 u16 ec_version, bios_version;
1769
1770 fwvers = tpacpi_check_quirks(tpacpi_bios_version_qtable,
1771 ARRAY_SIZE(tpacpi_bios_version_qtable));
1772
1773 if (!fwvers)
1774 return;
1775
1776 bios_version = fwvers & 0xffffU;
1777 ec_version = (fwvers >> 16) & 0xffffU;
1778
1779 /* note that unknown versions are set to 0x0000 and we use that */
1780 if ((bios_version > thinkpad_id.bios_release) ||
1781 (ec_version > thinkpad_id.ec_release &&
846a416b 1782 ec_version != TPACPI_MATCH_ANY_VERSION)) {
600a99fa
HMH		 1783 /*
1784 * The changelogs would let us track down the exact
1785 * reason, but it is just too much of a pain to track
1786 * it. We only list BIOSes that are either really
1787 * broken, or really stable to begin with, so it is
1788 * best if the user upgrades the firmware anyway.
1789 */
0978e012 1790 pr_warn("WARNING: Outdated ThinkPad BIOS/EC firmware\n");
5cac62ac 1791 pr_warn("WARNING: This firmware may be missing critical bug fixes and/or important features\n");
600a99fa
HMH		 1792 }
1793}
1794
e675abaf
HMH		 1795static bool __init tpacpi_is_fw_known(void)
1796{
1797 return tpacpi_check_quirks(tpacpi_bios_version_qtable,
1798 ARRAY_SIZE(tpacpi_bios_version_qtable)) != 0;
1799}
1800
b21a15f6
HMH		 1801/****************************************************************************
1802 ****************************************************************************
1803 *
1804 * Subdrivers
1805 *
1806 ****************************************************************************
1807 ****************************************************************************/
1808
1809/*************************************************************************
7a43f788 1810 * thinkpad-acpi metadata subdriver
b21a15f6
HMH		 1811 */
1812
887965e6 1813static int thinkpad_acpi_driver_read(struct seq_file *m)
1da177e4 1814{
887965e6
AD		 1815 seq_printf(m, "driver:\t\t%s\n", TPACPI_DESC);
1816 seq_printf(m, "version:\t%s\n", TPACPI_VERSION);
1817 return 0;
1da177e4
LT		 1818}
1819
a5763f22
HMH		 1820static struct ibm_struct thinkpad_acpi_driver_data = {
1821 .name = "driver",
1822 .read = thinkpad_acpi_driver_read,
1823};
1824
56b6aeb0
HMH		 1825/*************************************************************************
1826 * Hotkey subdriver
1827 */
1828
0d922e3b
HMH		 1829/*
1830 * ThinkPad firmware event model
1831 *
1832 * The ThinkPad firmware has two main event interfaces: normal ACPI
1833 * notifications (which follow the ACPI standard), and a private event
1834 * interface.
1835 *
1836 * The private event interface also issues events for the hotkeys. As
1837 * the driver gained features, the event handling code ended up being
1838 * built around the hotkey subdriver. This will need to be refactored
1839 * to a more formal event API eventually.
1840 *
1841 * Some "hotkeys" are actually supposed to be used as event reports,
1842 * such as "brightness has changed", "volume has changed", depending on
1843 * the ThinkPad model and how the firmware is operating.
1844 *
1845 * Unlike other classes, hotkey-class events have mask/unmask control on
1846 * non-ancient firmware. However, how it behaves changes a lot with the
1847 * firmware model and version.
1848 */
1849
f74a27d4
HMH		 1850enum { /* hot key scan codes (derived from ACPI DSDT) */
1851 TP_ACPI_HOTKEYSCAN_FNF1 = 0,
1852 TP_ACPI_HOTKEYSCAN_FNF2,
1853 TP_ACPI_HOTKEYSCAN_FNF3,
1854 TP_ACPI_HOTKEYSCAN_FNF4,
1855 TP_ACPI_HOTKEYSCAN_FNF5,
1856 TP_ACPI_HOTKEYSCAN_FNF6,
1857 TP_ACPI_HOTKEYSCAN_FNF7,
1858 TP_ACPI_HOTKEYSCAN_FNF8,
1859 TP_ACPI_HOTKEYSCAN_FNF9,
1860 TP_ACPI_HOTKEYSCAN_FNF10,
1861 TP_ACPI_HOTKEYSCAN_FNF11,
1862 TP_ACPI_HOTKEYSCAN_FNF12,
1863 TP_ACPI_HOTKEYSCAN_FNBACKSPACE,
1864 TP_ACPI_HOTKEYSCAN_FNINSERT,
1865 TP_ACPI_HOTKEYSCAN_FNDELETE,
1866 TP_ACPI_HOTKEYSCAN_FNHOME,
1867 TP_ACPI_HOTKEYSCAN_FNEND,
1868 TP_ACPI_HOTKEYSCAN_FNPAGEUP,
1869 TP_ACPI_HOTKEYSCAN_FNPAGEDOWN,
1870 TP_ACPI_HOTKEYSCAN_FNSPACE,
1871 TP_ACPI_HOTKEYSCAN_VOLUMEUP,
1872 TP_ACPI_HOTKEYSCAN_VOLUMEDOWN,
1873 TP_ACPI_HOTKEYSCAN_MUTE,
1874 TP_ACPI_HOTKEYSCAN_THINKPAD,
34a656d2
HMH		 1875 TP_ACPI_HOTKEYSCAN_UNK1,
1876 TP_ACPI_HOTKEYSCAN_UNK2,
1877 TP_ACPI_HOTKEYSCAN_UNK3,
1878 TP_ACPI_HOTKEYSCAN_UNK4,
1879 TP_ACPI_HOTKEYSCAN_UNK5,
1880 TP_ACPI_HOTKEYSCAN_UNK6,
1881 TP_ACPI_HOTKEYSCAN_UNK7,
1882 TP_ACPI_HOTKEYSCAN_UNK8,
1883
149c8c75
CK		 1884 /* Adaptive keyboard keycodes */
1885 TP_ACPI_HOTKEYSCAN_ADAPTIVE_START,
1886 TP_ACPI_HOTKEYSCAN_MUTE2 = TP_ACPI_HOTKEYSCAN_ADAPTIVE_START,
6a68d855
BN		 1887 TP_ACPI_HOTKEYSCAN_BRIGHTNESS_ZERO,
1888 TP_ACPI_HOTKEYSCAN_CLIPPING_TOOL,
1889 TP_ACPI_HOTKEYSCAN_CLOUD,
1890 TP_ACPI_HOTKEYSCAN_UNK9,
1891 TP_ACPI_HOTKEYSCAN_VOICE,
1892 TP_ACPI_HOTKEYSCAN_UNK10,
1893 TP_ACPI_HOTKEYSCAN_GESTURES,
1894 TP_ACPI_HOTKEYSCAN_UNK11,
1895 TP_ACPI_HOTKEYSCAN_UNK12,
1896 TP_ACPI_HOTKEYSCAN_UNK13,
1897 TP_ACPI_HOTKEYSCAN_CONFIG,
1898 TP_ACPI_HOTKEYSCAN_NEW_TAB,
1899 TP_ACPI_HOTKEYSCAN_RELOAD,
1900 TP_ACPI_HOTKEYSCAN_BACK,
1901 TP_ACPI_HOTKEYSCAN_MIC_DOWN,
1902 TP_ACPI_HOTKEYSCAN_MIC_UP,
1903 TP_ACPI_HOTKEYSCAN_MIC_CANCELLATION,
1904 TP_ACPI_HOTKEYSCAN_CAMERA_MODE,
1905 TP_ACPI_HOTKEYSCAN_ROTATE_DISPLAY,
1906
696c6523
CK		 1907 /* Lenovo extended keymap, starting at 0x1300 */
1908 TP_ACPI_HOTKEYSCAN_EXTENDED_START,
1909 /* first new observed key (star, favorites) is 0x1311 */
1910 TP_ACPI_HOTKEYSCAN_STAR = 69,
1911 TP_ACPI_HOTKEYSCAN_CLIPPING_TOOL2,
cb5c1978 1912 TP_ACPI_HOTKEYSCAN_CALCULATOR,
696c6523
CK		 1913 TP_ACPI_HOTKEYSCAN_BLUETOOTH,
1914 TP_ACPI_HOTKEYSCAN_KEYBOARD,
7ed7748d
HG		 1915 TP_ACPI_HOTKEYSCAN_FN_RIGHT_SHIFT, /* Used by "Lenovo Quick Clean" */
1916 TP_ACPI_HOTKEYSCAN_NOTIFICATION_CENTER,
1917 TP_ACPI_HOTKEYSCAN_PICKUP_PHONE,
1918 TP_ACPI_HOTKEYSCAN_HANGUP_PHONE,
696c6523 1919
34a656d2
HMH		 1920 /* Hotkey keymap size */
1921 TPACPI_HOTKEY_MAP_LEN
f74a27d4
HMH		 1922};
1923
0d922e3b 1924enum { /* Keys/events available through NVRAM polling */
01e88f25
HMH		 1925 TPACPI_HKEY_NVRAM_KNOWN_MASK = 0x00fb88c0U,
1926 TPACPI_HKEY_NVRAM_GOOD_MASK = 0x00fb8000U,
1927};
1928
1929enum { /* Positions of some of the keys in hotkey masks */
1930 TP_ACPI_HKEY_DISPSWTCH_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNF7,
1931 TP_ACPI_HKEY_DISPXPAND_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNF8,
1932 TP_ACPI_HKEY_HIBERNATE_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNF12,
1933 TP_ACPI_HKEY_BRGHTUP_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNHOME,
1934 TP_ACPI_HKEY_BRGHTDWN_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNEND,
c685e20d 1935 TP_ACPI_HKEY_KBD_LIGHT_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNPAGEUP,
01e88f25
HMH		 1936 TP_ACPI_HKEY_ZOOM_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNSPACE,
1937 TP_ACPI_HKEY_VOLUP_MASK = 1 << TP_ACPI_HOTKEYSCAN_VOLUMEUP,
1938 TP_ACPI_HKEY_VOLDWN_MASK = 1 << TP_ACPI_HOTKEYSCAN_VOLUMEDOWN,
1939 TP_ACPI_HKEY_MUTE_MASK = 1 << TP_ACPI_HOTKEYSCAN_MUTE,
1940 TP_ACPI_HKEY_THINKPAD_MASK = 1 << TP_ACPI_HOTKEYSCAN_THINKPAD,
1941};
1942
1943enum { /* NVRAM to ACPI HKEY group map */
1944 TP_NVRAM_HKEY_GROUP_HK2 = TP_ACPI_HKEY_THINKPAD_MASK |
1945 TP_ACPI_HKEY_ZOOM_MASK |
1946 TP_ACPI_HKEY_DISPSWTCH_MASK |
1947 TP_ACPI_HKEY_HIBERNATE_MASK,
1948 TP_NVRAM_HKEY_GROUP_BRIGHTNESS = TP_ACPI_HKEY_BRGHTUP_MASK |
1949 TP_ACPI_HKEY_BRGHTDWN_MASK,
1950 TP_NVRAM_HKEY_GROUP_VOLUME = TP_ACPI_HKEY_VOLUP_MASK |
1951 TP_ACPI_HKEY_VOLDWN_MASK |
1952 TP_ACPI_HKEY_MUTE_MASK,
1953};
1954
1955#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
1956struct tp_nvram_state {
1957 u16 thinkpad_toggle:1;
1958 u16 zoom_toggle:1;
1959 u16 display_toggle:1;
1960 u16 thinklight_toggle:1;
1961 u16 hibernate_toggle:1;
1962 u16 displayexp_toggle:1;
1963 u16 display_state:1;
1964 u16 brightness_toggle:1;
1965 u16 volume_toggle:1;
1966 u16 mute:1;
1967
1968 u8 brightness_level;
1969 u8 volume_level;
1970};
1971
db25f16d 1972/* kthread for the hotkey poller */
01e88f25 1973static struct task_struct *tpacpi_hotkey_task;
db25f16d 1974
db25f16d 1975/*
0d922e3b
HMH		 1976 * Acquire mutex to write poller control variables as an
1977 * atomic block.
1978 *
1979 * Increment hotkey_config_change when changing them if you
1980 * want the kthread to forget old state.
db25f16d
HMH		 1981 *
1982 * See HOTKEY_CONFIG_CRITICAL_START/HOTKEY_CONFIG_CRITICAL_END
1983 */
01e88f25
HMH		 1984static struct mutex hotkey_thread_data_mutex;
1985static unsigned int hotkey_config_change;
1986
db25f16d
HMH		 1987/*
1988 * hotkey poller control variables
1989 *
1990 * Must be atomic or readers will also need to acquire mutex
0d922e3b
HMH		 1991 *
1992 * HOTKEY_CONFIG_CRITICAL_START/HOTKEY_CONFIG_CRITICAL_END
1993 * should be used only when the changes need to be taken as
1994 * a block, OR when one needs to force the kthread to forget
1995 * old state.
db25f16d
HMH		 1996 */
1997static u32 hotkey_source_mask; /* bit mask 0=ACPI,1=NVRAM */
1998static unsigned int hotkey_poll_freq = 10; /* Hz */
1999
2000#define HOTKEY_CONFIG_CRITICAL_START \
2001 do { \
2002 mutex_lock(&hotkey_thread_data_mutex); \
2003 hotkey_config_change++; \
2004 } while (0);
2005#define HOTKEY_CONFIG_CRITICAL_END \
2006 mutex_unlock(&hotkey_thread_data_mutex);
2007
01e88f25
HMH		 2008#else /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
2009
2010#define hotkey_source_mask 0U
db25f16d
HMH		 2011#define HOTKEY_CONFIG_CRITICAL_START
2012#define HOTKEY_CONFIG_CRITICAL_END
01e88f25
HMH		 2013
2014#endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
2015
f74a27d4
HMH		 2016static struct mutex hotkey_mutex;
2017
a713b4d7
HMH		 2018static enum { /* Reasons for waking up */
2019 TP_ACPI_WAKEUP_NONE = 0, /* None or unknown */
2020 TP_ACPI_WAKEUP_BAYEJ, /* Bay ejection request */
2021 TP_ACPI_WAKEUP_UNDOCK, /* Undock request */
2022} hotkey_wakeup_reason;
2023
2024static int hotkey_autosleep_ack;
2025
0d922e3b
HMH		 2026static u32 hotkey_orig_mask; /* events the BIOS had enabled */
2027static u32 hotkey_all_mask; /* all events supported in fw */
0118c2d3 2028static u32 hotkey_adaptive_all_mask; /* all adaptive events supported in fw */
0d922e3b
HMH		 2029static u32 hotkey_reserved_mask; /* events better left disabled */
2030static u32 hotkey_driver_mask; /* events needed by the driver */
2031static u32 hotkey_user_mask; /* events visible to userspace */
2032static u32 hotkey_acpi_mask; /* events enabled in firmware */
6a38abbf 2033
edf0e0e5 2034static u16 *hotkey_keycode_map;
78f81cc4 2035
94954cc6 2036static struct attribute_set *hotkey_dev_attributes;
a0416420 2037
8b468c0c
HMH		 2038static void tpacpi_driver_event(const unsigned int hkey_event);
2039static void hotkey_driver_event(const unsigned int scancode);
7f0cf712 2040static void hotkey_poll_setup(const bool may_warn);
8b468c0c 2041
6c231bd5
HMH		 2042/* HKEY.MHKG() return bits */
2043#define TP_HOTKEY_TABLET_MASK (1 << 3)
dda3ec0a
BB		 2044enum {
2045 TP_ACPI_MULTI_MODE_INVALID = 0,
2046 TP_ACPI_MULTI_MODE_UNKNOWN = 1 << 0,
2047 TP_ACPI_MULTI_MODE_LAPTOP = 1 << 1,
2048 TP_ACPI_MULTI_MODE_TABLET = 1 << 2,
2049 TP_ACPI_MULTI_MODE_FLAT = 1 << 3,
2050 TP_ACPI_MULTI_MODE_STAND = 1 << 4,
2051 TP_ACPI_MULTI_MODE_TENT = 1 << 5,
2052 TP_ACPI_MULTI_MODE_STAND_TENT = 1 << 6,
2053};
2054
2055enum {
2056 /* The following modes are considered tablet mode for the purpose of
2057 * reporting the status to userspace. i.e. in all these modes it makes
2058 * sense to disable the laptop input devices such as touchpad and
2059 * keyboard.
2060 */
2061 TP_ACPI_MULTI_MODE_TABLET_LIKE = TP_ACPI_MULTI_MODE_TABLET |
2062 TP_ACPI_MULTI_MODE_STAND |
2063 TP_ACPI_MULTI_MODE_TENT |
2064 TP_ACPI_MULTI_MODE_STAND_TENT,
2065};
6c231bd5 2066
19d337df 2067static int hotkey_get_wlsw(void)
74941a69 2068{
19d337df
JB		 2069 int status;
2070
2071 if (!tp_features.hotkey_wlsw)
2072 return -ENODEV;
2073
a73f3091 2074#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
19d337df
JB		 2075 if (dbg_wlswemul)
2076 return (tpacpi_wlsw_emulstate) ?
2077 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF;
a73f3091 2078#endif
19d337df
JB		 2079
2080 if (!acpi_evalf(hkey_handle, &status, "WLSW", "d"))
74941a69 2081 return -EIO;
19d337df
JB		 2082
2083 return (status) ? TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF;
74941a69
HMH		 2084}
2085
dda3ec0a
BB		 2086static int hotkey_gmms_get_tablet_mode(int s, int *has_tablet_mode)
2087{
2088 int type = (s >> 16) & 0xffff;
2089 int value = s & 0xffff;
2090 int mode = TP_ACPI_MULTI_MODE_INVALID;
2091 int valid_modes = 0;
2092
2093 if (has_tablet_mode)
2094 *has_tablet_mode = 0;
2095
2096 switch (type) {
2097 case 1:
2098 valid_modes = TP_ACPI_MULTI_MODE_LAPTOP |
2099 TP_ACPI_MULTI_MODE_TABLET |
2100 TP_ACPI_MULTI_MODE_STAND_TENT;
2101 break;
2102 case 2:
2103 valid_modes = TP_ACPI_MULTI_MODE_LAPTOP |
2104 TP_ACPI_MULTI_MODE_FLAT |
2105 TP_ACPI_MULTI_MODE_TABLET |
2106 TP_ACPI_MULTI_MODE_STAND |
2107 TP_ACPI_MULTI_MODE_TENT;
2108 break;
2109 case 3:
2110 valid_modes = TP_ACPI_MULTI_MODE_LAPTOP |
2111 TP_ACPI_MULTI_MODE_FLAT;
2112 break;
2113 case 4:
dda3ec0a 2114 case 5:
26befef0
BB		 2115 /* In mode 4, FLAT is not specified as a valid mode. However,
2116 * it can be seen at least on the X1 Yoga 2nd Generation.
2117 */
dda3ec0a
BB		 2118 valid_modes = TP_ACPI_MULTI_MODE_LAPTOP |
2119 TP_ACPI_MULTI_MODE_FLAT |
2120 TP_ACPI_MULTI_MODE_TABLET |
2121 TP_ACPI_MULTI_MODE_STAND |
2122 TP_ACPI_MULTI_MODE_TENT;
2123 break;
2124 default:
2125 pr_err("Unknown multi mode status type %d with value 0x%04X, please report this to %s\n",
2126 type, value, TPACPI_MAIL);
2127 return 0;
2128 }
2129
2130 if (has_tablet_mode && (valid_modes & TP_ACPI_MULTI_MODE_TABLET_LIKE))
2131 *has_tablet_mode = 1;
2132
2133 switch (value) {
2134 case 1:
2135 mode = TP_ACPI_MULTI_MODE_LAPTOP;
2136 break;
2137 case 2:
2138 mode = TP_ACPI_MULTI_MODE_FLAT;
2139 break;
2140 case 3:
2141 mode = TP_ACPI_MULTI_MODE_TABLET;
2142 break;
2143 case 4:
2144 if (type == 1)
2145 mode = TP_ACPI_MULTI_MODE_STAND_TENT;
2146 else
2147 mode = TP_ACPI_MULTI_MODE_STAND;
2148 break;
2149 case 5:
2150 mode = TP_ACPI_MULTI_MODE_TENT;
2151 break;
2152 default:
2153 if (type == 5 && value == 0xffff) {
2154 pr_warn("Multi mode status is undetected, assuming laptop\n");
2155 return 0;
2156 }
2157 }
2158
2159 if (!(mode & valid_modes)) {
2160 pr_err("Unknown/reserved multi mode value 0x%04X for type %d, please report this to %s\n",
2161 value, type, TPACPI_MAIL);
2162 return 0;
2163 }
2164
2165 return !!(mode & TP_ACPI_MULTI_MODE_TABLET_LIKE);
2166}
2167
6c231bd5
HMH		 2168static int hotkey_get_tablet_mode(int *status)
2169{
2170 int s;
2171
b03f4d49
L		 2172 switch (tp_features.hotkey_tablet) {
2173 case TP_HOTKEY_TABLET_USES_MHKG:
2174 if (!acpi_evalf(hkey_handle, &s, "MHKG", "d"))
2175 return -EIO;
2176
2177 *status = ((s & TP_HOTKEY_TABLET_MASK) != 0);
2178 break;
dda3ec0a
BB		 2179 case TP_HOTKEY_TABLET_USES_GMMS:
2180 if (!acpi_evalf(hkey_handle, &s, "GMMS", "dd", 0))
b03f4d49
L		 2181 return -EIO;
2182
dda3ec0a 2183 *status = hotkey_gmms_get_tablet_mode(s, NULL);
b03f4d49
L		 2184 break;
2185 default:
2186 break;
2187 }
6c231bd5 2188
cee47f5a 2189 return 0;
6c231bd5
HMH		 2190}
2191
b2c985e7 2192/*
0d922e3b
HMH		 2193 * Reads current event mask from firmware, and updates
2194 * hotkey_acpi_mask accordingly. Also resets any bits
2195 * from hotkey_user_mask that are unavailable to be
2196 * delivered (shadow requirement of the userspace ABI).
2197 *
b2c985e7
HMH		 2198 * Call with hotkey_mutex held
2199 */
2200static int hotkey_mask_get(void)
2201{
2202 if (tp_features.hotkey_mask) {
0d922e3b
HMH		 2203 u32 m = 0;
2204
01e88f25 2205 if (!acpi_evalf(hkey_handle, &m, "DHKN", "d"))
b2c985e7 2206 return -EIO;
0d922e3b
HMH		 2207
2208 hotkey_acpi_mask = m;
2209 } else {
2210 /* no mask support doesn't mean no event support... */
2211 hotkey_acpi_mask = hotkey_all_mask;
b2c985e7 2212 }
0d922e3b
HMH		 2213
2214 /* sync userspace-visible mask */
2215 hotkey_user_mask &= (hotkey_acpi_mask | hotkey_source_mask);
b2c985e7
HMH		 2216
2217 return 0;
2218}
2219
df6dd1b3 2220static void hotkey_mask_warn_incomplete_mask(void)
0d922e3b
HMH		 2221{
2222 /* log only what the user can fix... */
2223 const u32 wantedmask = hotkey_driver_mask &
2224 ~(hotkey_acpi_mask | hotkey_source_mask) &
2225 (hotkey_all_mask | TPACPI_HKEY_NVRAM_KNOWN_MASK);
2226
2227 if (wantedmask)
0978e012 2228 pr_notice("required events 0x%08x not enabled!\n", wantedmask);
0d922e3b
HMH		 2229}
2230
b2c985e7 2231/*
0d922e3b
HMH		 2232 * Set the firmware mask when supported
2233 *
2234 * Also calls hotkey_mask_get to update hotkey_acpi_mask.
2235 *
2236 * NOTE: does not set bits in hotkey_user_mask, but may reset them.
2237 *
b2c985e7
HMH		 2238 * Call with hotkey_mutex held
2239 */
2240static int hotkey_mask_set(u32 mask)
2241{
2242 int i;
2243 int rc = 0;
2244
0d922e3b 2245 const u32 fwmask = mask & ~hotkey_source_mask;
92889022 2246
0d922e3b 2247 if (tp_features.hotkey_mask) {
b2c985e7 2248 for (i = 0; i < 32; i++) {
b2c985e7
HMH		 2249 if (!acpi_evalf(hkey_handle,
2250 NULL, "MHKM", "vdd", i + 1,
0d922e3b 2251 !!(mask & (1 << i)))) {
b2c985e7
HMH		 2252 rc = -EIO;
2253 break;
b2c985e7
HMH		 2254 }
2255 }
0d922e3b 2256 }
b2c985e7 2257
0d922e3b
HMH		 2258 /*
2259 * We *must* make an inconditional call to hotkey_mask_get to
2260 * refresh hotkey_acpi_mask and update hotkey_user_mask
2261 *
2262 * Take the opportunity to also log when we cannot _enable_
2263 * a given event.
2264 */
2265 if (!hotkey_mask_get() && !rc && (fwmask & ~hotkey_acpi_mask)) {
5cac62ac 2266 pr_notice("asked for hotkey mask 0x%08x, but firmware forced it to 0x%08x\n",
0978e012 2267 fwmask, hotkey_acpi_mask);
b2c985e7
HMH		 2268 }
2269
6b30eb7d
HMH		 2270 if (tpacpi_lifecycle != TPACPI_LIFE_EXITING)
2271 hotkey_mask_warn_incomplete_mask();
0d922e3b
HMH		 2272
2273 return rc;
2274}
2275
2276/*
2277 * Sets hotkey_user_mask and tries to set the firmware mask
2278 *
2279 * Call with hotkey_mutex held
2280 */
2281static int hotkey_user_mask_set(const u32 mask)
2282{
2283 int rc;
2284
2285 /* Give people a chance to notice they are doing something that
2286 * is bound to go boom on their users sooner or later */
2287 if (!tp_warned.hotkey_mask_ff &&
2288 (mask == 0xffff || mask == 0xffffff ||
2289 mask == 0xffffffff)) {
2290 tp_warned.hotkey_mask_ff = 1;
5cac62ac
AS		 2291 pr_notice("setting the hotkey mask to 0x%08x is likely not the best way to go about it\n",
2292 mask);
2293 pr_notice("please consider using the driver defaults, and refer to up-to-date thinkpad-acpi documentation\n");
0d922e3b
HMH		 2294 }
2295
2296 /* Try to enable what the user asked for, plus whatever we need.
2297 * this syncs everything but won't enable bits in hotkey_user_mask */
2298 rc = hotkey_mask_set((mask | hotkey_driver_mask) & ~hotkey_source_mask);
2299
2300 /* Enable the available bits in hotkey_user_mask */
2301 hotkey_user_mask = mask & (hotkey_acpi_mask | hotkey_source_mask);
2302
b2c985e7
HMH		 2303 return rc;
2304}
2305
8b468c0c
HMH		 2306/*
2307 * Sets the driver hotkey mask.
2308 *
2309 * Can be called even if the hotkey subdriver is inactive
2310 */
2311static int tpacpi_hotkey_driver_mask_set(const u32 mask)
2312{
2313 int rc;
2314
2315 /* Do the right thing if hotkey_init has not been called yet */
2316 if (!tp_features.hotkey) {
2317 hotkey_driver_mask = mask;
2318 return 0;
2319 }
2320
2321 mutex_lock(&hotkey_mutex);
2322
2323 HOTKEY_CONFIG_CRITICAL_START
2324 hotkey_driver_mask = mask;
b684a363 2325#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
8b468c0c 2326 hotkey_source_mask |= (mask & ~hotkey_all_mask);
b684a363 2327#endif
8b468c0c
HMH		 2328 HOTKEY_CONFIG_CRITICAL_END
2329
2330 rc = hotkey_mask_set((hotkey_acpi_mask | hotkey_driver_mask) &
2331 ~hotkey_source_mask);
7f0cf712
HMH		 2332 hotkey_poll_setup(true);
2333
8b468c0c
HMH		 2334 mutex_unlock(&hotkey_mutex);
2335
2336 return rc;
2337}
2338
b2c985e7
HMH		 2339static int hotkey_status_get(int *status)
2340{
2341 if (!acpi_evalf(hkey_handle, status, "DHKC", "d"))
2342 return -EIO;
2343
2344 return 0;
2345}
2346
2586d566 2347static int hotkey_status_set(bool enable)
b2c985e7 2348{
2586d566 2349 if (!acpi_evalf(hkey_handle, NULL, "MHKC", "vd", enable ? 1 : 0))
b2c985e7
HMH		 2350 return -EIO;
2351
2352 return 0;
2353}
2354
6c231bd5 2355static void tpacpi_input_send_tabletsw(void)
b3ec6f91 2356{
6c231bd5 2357 int state;
b3ec6f91 2358
6c231bd5
HMH		 2359 if (tp_features.hotkey_tablet &&
2360 !hotkey_get_tablet_mode(&state)) {
2361 mutex_lock(&tpacpi_inputdev_send_mutex);
b3ec6f91 2362
6c231bd5
HMH		 2363 input_report_switch(tpacpi_inputdev,
2364 SW_TABLET_MODE, !!state);
2365 input_sync(tpacpi_inputdev);
2366
2367 mutex_unlock(&tpacpi_inputdev_send_mutex);
2368 }
b3ec6f91
HMH		 2369}
2370
0d922e3b
HMH		 2371/* Do NOT call without validating scancode first */
2372static void tpacpi_input_send_key(const unsigned int scancode)
b7c8c200 2373{
0d922e3b 2374 const unsigned int keycode = hotkey_keycode_map[scancode];
b7c8c200
HMH		 2375
2376 if (keycode != KEY_RESERVED) {
2377 mutex_lock(&tpacpi_inputdev_send_mutex);
2378
5ffba7e6 2379 input_event(tpacpi_inputdev, EV_MSC, MSC_SCAN, scancode);
b7c8c200 2380 input_report_key(tpacpi_inputdev, keycode, 1);
b7c8c200
HMH		 2381 input_sync(tpacpi_inputdev);
2382
5ffba7e6 2383 input_event(tpacpi_inputdev, EV_MSC, MSC_SCAN, scancode);
b7c8c200 2384 input_report_key(tpacpi_inputdev, keycode, 0);
b7c8c200
HMH		 2385 input_sync(tpacpi_inputdev);
2386
2387 mutex_unlock(&tpacpi_inputdev_send_mutex);
2388 }
2389}
2390
0d922e3b
HMH		 2391/* Do NOT call without validating scancode first */
2392static void tpacpi_input_send_key_masked(const unsigned int scancode)
2393{
8b468c0c 2394 hotkey_driver_event(scancode);
0d922e3b
HMH		 2395 if (hotkey_user_mask & (1 << scancode))
2396 tpacpi_input_send_key(scancode);
2397}
2398
01e88f25
HMH		 2399#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
2400static struct tp_acpi_drv_struct ibm_hotkey_acpidriver;
2401
0d922e3b 2402/* Do NOT call without validating scancode first */
01e88f25
HMH		 2403static void tpacpi_hotkey_send_key(unsigned int scancode)
2404{
0d922e3b 2405 tpacpi_input_send_key_masked(scancode);
01e88f25
HMH		 2406}
2407
0d922e3b 2408static void hotkey_read_nvram(struct tp_nvram_state *n, const u32 m)
01e88f25
HMH		 2409{
2410 u8 d;
2411
2412 if (m & TP_NVRAM_HKEY_GROUP_HK2) {
2413 d = nvram_read_byte(TP_NVRAM_ADDR_HK2);
2414 n->thinkpad_toggle = !!(d & TP_NVRAM_MASK_HKT_THINKPAD);
2415 n->zoom_toggle = !!(d & TP_NVRAM_MASK_HKT_ZOOM);
2416 n->display_toggle = !!(d & TP_NVRAM_MASK_HKT_DISPLAY);
2417 n->hibernate_toggle = !!(d & TP_NVRAM_MASK_HKT_HIBERNATE);
2418 }
c685e20d 2419 if (m & TP_ACPI_HKEY_KBD_LIGHT_MASK) {
01e88f25
HMH		 2420 d = nvram_read_byte(TP_NVRAM_ADDR_THINKLIGHT);
2421 n->thinklight_toggle = !!(d & TP_NVRAM_MASK_THINKLIGHT);
2422 }
2423 if (m & TP_ACPI_HKEY_DISPXPAND_MASK) {
2424 d = nvram_read_byte(TP_NVRAM_ADDR_VIDEO);
2425 n->displayexp_toggle =
2426 !!(d & TP_NVRAM_MASK_HKT_DISPEXPND);
2427 }
2428 if (m & TP_NVRAM_HKEY_GROUP_BRIGHTNESS) {
2429 d = nvram_read_byte(TP_NVRAM_ADDR_BRIGHTNESS);
2430 n->brightness_level = (d & TP_NVRAM_MASK_LEVEL_BRIGHTNESS)
2431 >> TP_NVRAM_POS_LEVEL_BRIGHTNESS;
2432 n->brightness_toggle =
2433 !!(d & TP_NVRAM_MASK_HKT_BRIGHTNESS);
2434 }
2435 if (m & TP_NVRAM_HKEY_GROUP_VOLUME) {
2436 d = nvram_read_byte(TP_NVRAM_ADDR_MIXER);
2437 n->volume_level = (d & TP_NVRAM_MASK_LEVEL_VOLUME)
2438 >> TP_NVRAM_POS_LEVEL_VOLUME;
2439 n->mute = !!(d & TP_NVRAM_MASK_MUTE);
2440 n->volume_toggle = !!(d & TP_NVRAM_MASK_HKT_VOLUME);
2441 }
2442}
2443
2444#define TPACPI_COMPARE_KEY(__scancode, __member) \
a4d44ba1
BW		 2445do { \
2446 if ((event_mask & (1 << __scancode)) && \
2447 oldn->__member != newn->__member) \
2448 tpacpi_hotkey_send_key(__scancode); \
2449} while (0)
01e88f25
HMH		 2450
2451#define TPACPI_MAY_SEND_KEY(__scancode) \
a4d44ba1
BW		 2452do { \
2453 if (event_mask & (1 << __scancode)) \
2454 tpacpi_hotkey_send_key(__scancode); \
2455} while (0)
2456
2457static void issue_volchange(const unsigned int oldvol,
2458 const unsigned int newvol,
2459 const u32 event_mask)
2460{
2461 unsigned int i = oldvol;
2462
2463 while (i > newvol) {
2464 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEDOWN);
2465 i--;
5d756db9 2466 }
a4d44ba1
BW		 2467 while (i < newvol) {
2468 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEUP);
2469 i++;
2470 }
2471}
5d756db9 2472
a4d44ba1
BW		 2473static void issue_brightnesschange(const unsigned int oldbrt,
2474 const unsigned int newbrt,
2475 const u32 event_mask)
2476{
2477 unsigned int i = oldbrt;
28999022 2478
a4d44ba1
BW		 2479 while (i > newbrt) {
2480 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNEND);
2481 i--;
28999022 2482 }
a4d44ba1
BW		 2483 while (i < newbrt) {
2484 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNHOME);
2485 i++;
2486 }
2487}
2488
2489static void hotkey_compare_and_issue_event(struct tp_nvram_state *oldn,
2490 struct tp_nvram_state *newn,
2491 const u32 event_mask)
2492{
28999022 2493
01e88f25
HMH		 2494 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_THINKPAD, thinkpad_toggle);
2495 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNSPACE, zoom_toggle);
2496 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNF7, display_toggle);
2497 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNF12, hibernate_toggle);
2498
2499 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNPAGEUP, thinklight_toggle);
2500
2501 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNF8, displayexp_toggle);
2502
5d756db9
HMH		 2503 /*
2504 * Handle volume
2505 *
2506 * This code is supposed to duplicate the IBM firmware behaviour:
2507 * - Pressing MUTE issues mute hotkey message, even when already mute
2508 * - Pressing Volume up/down issues volume up/down hotkey messages,
c8440336 2509 * even when already at maximum or minimum volume
5d756db9
HMH		 2510 * - The act of unmuting issues volume up/down notification,
2511 * depending which key was used to unmute
2512 *
2513 * We are constrained to what the NVRAM can tell us, which is not much
2514 * and certainly not enough if more than one volume hotkey was pressed
2515 * since the last poll cycle.
2516 *
2517 * Just to make our life interesting, some newer Lenovo ThinkPads have
2518 * bugs in the BIOS and may fail to update volume_toggle properly.
2519 */
2520 if (newn->mute) {
2521 /* muted */
2522 if (!oldn->mute ||
2523 oldn->volume_toggle != newn->volume_toggle ||
2524 oldn->volume_level != newn->volume_level) {
2525 /* recently muted, or repeated mute keypress, or
2526 * multiple presses ending in mute */
a4d44ba1
BW		 2527 issue_volchange(oldn->volume_level, newn->volume_level,
2528 event_mask);
01e88f25
HMH		 2529 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_MUTE);
2530 }
5d756db9
HMH		 2531 } else {
2532 /* unmute */
2533 if (oldn->mute) {
2534 /* recently unmuted, issue 'unmute' keypress */
01e88f25 2535 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEUP);
5d756db9
HMH		 2536 }
2537 if (oldn->volume_level != newn->volume_level) {
a4d44ba1
BW		 2538 issue_volchange(oldn->volume_level, newn->volume_level,
2539 event_mask);
5d756db9
HMH		 2540 } else if (oldn->volume_toggle != newn->volume_toggle) {
2541 /* repeated vol up/down keypress at end of scale ? */
2542 if (newn->volume_level == 0)
01e88f25 2543 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEDOWN);
5d756db9
HMH		 2544 else if (newn->volume_level >= TP_NVRAM_LEVEL_VOLUME_MAX)
2545 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEUP);
01e88f25
HMH		 2546 }
2547 }
2548
2549 /* handle brightness */
28999022
HMH		 2550 if (oldn->brightness_level != newn->brightness_level) {
2551 issue_brightnesschange(oldn->brightness_level,
a4d44ba1 2552 newn->brightness_level, event_mask);
28999022
HMH		 2553 } else if (oldn->brightness_toggle != newn->brightness_toggle) {
2554 /* repeated key presses that didn't change state */
2555 if (newn->brightness_level == 0)
01e88f25 2556 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNEND);
28999022
HMH		 2557 else if (newn->brightness_level >= bright_maxlvl
2558 && !tp_features.bright_unkfw)
2559 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNHOME);
01e88f25 2560 }
01e88f25
HMH		 2561
2562#undef TPACPI_COMPARE_KEY
2563#undef TPACPI_MAY_SEND_KEY
0d922e3b 2564}
01e88f25 2565
0d922e3b
HMH		 2566/*
2567 * Polling driver
2568 *
2569 * We track all events in hotkey_source_mask all the time, since
2570 * most of them are edge-based. We only issue those requested by
2571 * hotkey_user_mask or hotkey_driver_mask, though.
2572 */
01e88f25
HMH		 2573static int hotkey_kthread(void *data)
2574{
5f38b06d 2575 struct tp_nvram_state s[2] = { 0 };
0d922e3b 2576 u32 poll_mask, event_mask;
01e88f25
HMH		 2577 unsigned int si, so;
2578 unsigned long t;
8a32c441 2579 unsigned int change_detector;
db25f16d 2580 unsigned int poll_freq;
8a32c441 2581 bool was_frozen;
01e88f25 2582
01e88f25
HMH		 2583 if (tpacpi_lifecycle == TPACPI_LIFE_EXITING)
2584 goto exit;
2585
2586 set_freezable();
2587
2588 so = 0;
2589 si = 1;
2590 t = 0;
2591
2592 /* Initial state for compares */
2593 mutex_lock(&hotkey_thread_data_mutex);
2594 change_detector = hotkey_config_change;
0d922e3b
HMH		 2595 poll_mask = hotkey_source_mask;
2596 event_mask = hotkey_source_mask &
2597 (hotkey_driver_mask | hotkey_user_mask);
db25f16d 2598 poll_freq = hotkey_poll_freq;
01e88f25 2599 mutex_unlock(&hotkey_thread_data_mutex);
0d922e3b 2600 hotkey_read_nvram(&s[so], poll_mask);
01e88f25 2601
db25f16d
HMH		 2602 while (!kthread_should_stop()) {
2603 if (t == 0) {
2604 if (likely(poll_freq))
2605 t = 1000/poll_freq;
2606 else
2607 t = 100; /* should never happen... */
2608 }
01e88f25 2609 t = msleep_interruptible(t);
8a32c441 2610 if (unlikely(kthread_freezable_should_stop(&was_frozen)))
01e88f25 2611 break;
8a32c441
TH		 2612
2613 if (t > 0 && !was_frozen)
01e88f25
HMH		 2614 continue;
2615
2616 mutex_lock(&hotkey_thread_data_mutex);
8a32c441 2617 if (was_frozen || hotkey_config_change != change_detector) {
01e88f25
HMH		 2618 /* forget old state on thaw or config change */
2619 si = so;
2620 t = 0;
2621 change_detector = hotkey_config_change;
2622 }
0d922e3b
HMH		 2623 poll_mask = hotkey_source_mask;
2624 event_mask = hotkey_source_mask &
2625 (hotkey_driver_mask | hotkey_user_mask);
db25f16d 2626 poll_freq = hotkey_poll_freq;
01e88f25
HMH		 2627 mutex_unlock(&hotkey_thread_data_mutex);
2628
0d922e3b
HMH		 2629 if (likely(poll_mask)) {
2630 hotkey_read_nvram(&s[si], poll_mask);
01e88f25
HMH		 2631 if (likely(si != so)) {
2632 hotkey_compare_and_issue_event(&s[so], &s[si],
0d922e3b 2633 event_mask);
01e88f25
HMH		 2634 }
2635 }
2636
2637 so = si;
2638 si ^= 1;
2639 }
2640
2641exit:
01e88f25
HMH		 2642 return 0;
2643}
2644
db25f16d 2645/* call with hotkey_mutex held */
01e88f25
HMH		 2646static void hotkey_poll_stop_sync(void)
2647{
2648 if (tpacpi_hotkey_task) {
01e88f25
HMH		 2649 kthread_stop(tpacpi_hotkey_task);
2650 tpacpi_hotkey_task = NULL;
01e88f25
HMH		 2651 }
2652}
2653
2654/* call with hotkey_mutex held */
7f0cf712 2655static void hotkey_poll_setup(const bool may_warn)
01e88f25 2656{
0d922e3b
HMH		 2657 const u32 poll_driver_mask = hotkey_driver_mask & hotkey_source_mask;
2658 const u32 poll_user_mask = hotkey_user_mask & hotkey_source_mask;
db25f16d 2659
0d922e3b
HMH		 2660 if (hotkey_poll_freq > 0 &&
2661 (poll_driver_mask ||
2662 (poll_user_mask && tpacpi_inputdev->users > 0))) {
01e88f25
HMH		 2663 if (!tpacpi_hotkey_task) {
2664 tpacpi_hotkey_task = kthread_run(hotkey_kthread,
95e57ab2 2665 NULL, TPACPI_NVRAM_KTHREAD_NAME);
01e88f25
HMH		 2666 if (IS_ERR(tpacpi_hotkey_task)) {
2667 tpacpi_hotkey_task = NULL;
5cac62ac 2668 pr_err("could not create kernel thread for hotkey polling\n");
01e88f25
HMH		 2669 }
2670 }
2671 } else {
2672 hotkey_poll_stop_sync();
0d922e3b 2673 if (may_warn && (poll_driver_mask || poll_user_mask) &&
db25f16d 2674 hotkey_poll_freq == 0) {
5cac62ac 2675 pr_notice("hot keys 0x%08x and/or events 0x%08x require polling, which is currently disabled\n",
0978e012 2676 poll_user_mask, poll_driver_mask);
01e88f25
HMH		 2677 }
2678 }
2679}
2680
7f0cf712 2681static void hotkey_poll_setup_safe(const bool may_warn)
01e88f25
HMH		 2682{
2683 mutex_lock(&hotkey_mutex);
2684 hotkey_poll_setup(may_warn);
2685 mutex_unlock(&hotkey_mutex);
2686}
2687
db25f16d
HMH		 2688/* call with hotkey_mutex held */
2689static void hotkey_poll_set_freq(unsigned int freq)
2690{
2691 if (!freq)
2692 hotkey_poll_stop_sync();
2693
db25f16d 2694 hotkey_poll_freq = freq;
db25f16d
HMH		 2695}
2696
1bc6b9cd
HMH		 2697#else /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
2698
7f0cf712
HMH		 2699static void hotkey_poll_setup(const bool __unused)
2700{
2701}
2702
2703static void hotkey_poll_setup_safe(const bool __unused)
1bc6b9cd
HMH		 2704{
2705}
2706
2707#endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
2708
01e88f25
HMH		 2709static int hotkey_inputdev_open(struct input_dev *dev)
2710{
2711 switch (tpacpi_lifecycle) {
2712 case TPACPI_LIFE_INIT:
01e88f25 2713 case TPACPI_LIFE_RUNNING:
db25f16d 2714 hotkey_poll_setup_safe(false);
01e88f25 2715 return 0;
b589ea4c
HMH		 2716 case TPACPI_LIFE_EXITING:
2717 return -EBUSY;
01e88f25
HMH		 2718 }
2719
2720 /* Should only happen if tpacpi_lifecycle is corrupt */
2721 BUG();
2722 return -EBUSY;
2723}
2724
2725static void hotkey_inputdev_close(struct input_dev *dev)
2726{
2727 /* disable hotkey polling when possible */
b589ea4c 2728 if (tpacpi_lifecycle != TPACPI_LIFE_EXITING &&
0d922e3b 2729 !(hotkey_source_mask & hotkey_driver_mask))
db25f16d 2730 hotkey_poll_setup_safe(false);
01e88f25 2731}
01e88f25 2732
a0416420
HMH		 2733/* sysfs hotkey enable ------------------------------------------------- */
2734static ssize_t hotkey_enable_show(struct device *dev,
2735 struct device_attribute *attr,
2736 char *buf)
2737{
ae92bd17 2738 int res, status;
a0416420 2739
2586d566
HMH		 2740 printk_deprecated_attribute("hotkey_enable",
2741 "Hotkey reporting is always enabled");
2742
b2c985e7 2743 res = hotkey_status_get(&status);
a0416420
HMH		 2744 if (res)
2745 return res;
2746
2747 return snprintf(buf, PAGE_SIZE, "%d\n", status);
2748}
2749
2750static ssize_t hotkey_enable_store(struct device *dev,
2751 struct device_attribute *attr,
2752 const char *buf, size_t count)
2753{
2754 unsigned long t;
2586d566
HMH		 2755
2756 printk_deprecated_attribute("hotkey_enable",
2757 "Hotkeys can be disabled through hotkey_mask");
a0416420
HMH		 2758
2759 if (parse_strtoul(buf, 1, &t))
2760 return -EINVAL;
2761
2586d566
HMH		 2762 if (t == 0)
2763 return -EPERM;
a0416420 2764
2586d566 2765 return count;
a0416420
HMH		 2766}
2767
b4dd04ac 2768static DEVICE_ATTR_RW(hotkey_enable);
a0416420
HMH		 2769
2770/* sysfs hotkey mask --------------------------------------------------- */
2771static ssize_t hotkey_mask_show(struct device *dev,
2772 struct device_attribute *attr,
2773 char *buf)
2774{
0d922e3b 2775 return snprintf(buf, PAGE_SIZE, "0x%08x\n", hotkey_user_mask);
a0416420
HMH		 2776}
2777
2778static ssize_t hotkey_mask_store(struct device *dev,
2779 struct device_attribute *attr,
2780 const char *buf, size_t count)
2781{
2782 unsigned long t;
b2c985e7 2783 int res;
a0416420 2784
ae92bd17 2785 if (parse_strtoul(buf, 0xffffffffUL, &t))
a0416420
HMH		 2786 return -EINVAL;
2787
7646ea88 2788 if (mutex_lock_killable(&hotkey_mutex))
b2c985e7
HMH		 2789 return -ERESTARTSYS;
2790
0d922e3b 2791 res = hotkey_user_mask_set(t);
01e88f25
HMH		 2792
2793#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
db25f16d 2794 hotkey_poll_setup(true);
01e88f25
HMH		 2795#endif
2796
b2c985e7 2797 mutex_unlock(&hotkey_mutex);
a0416420 2798
56e2c200
HMH		 2799 tpacpi_disclose_usertask("hotkey_mask", "set to 0x%08lx\n", t);
2800
a0416420
HMH		 2801 return (res) ? res : count;
2802}
2803
b4dd04ac 2804static DEVICE_ATTR_RW(hotkey_mask);
a0416420
HMH		 2805
2806/* sysfs hotkey bios_enabled ------------------------------------------- */
2807static ssize_t hotkey_bios_enabled_show(struct device *dev,
2808 struct device_attribute *attr,
2809 char *buf)
2810{
2586d566 2811 return sprintf(buf, "0\n");
a0416420
HMH		 2812}
2813
b4dd04ac 2814static DEVICE_ATTR_RO(hotkey_bios_enabled);
a0416420
HMH		 2815
2816/* sysfs hotkey bios_mask ---------------------------------------------- */
2817static ssize_t hotkey_bios_mask_show(struct device *dev,
2818 struct device_attribute *attr,
2819 char *buf)
2820{
06777be6
HMH		 2821 printk_deprecated_attribute("hotkey_bios_mask",
2822 "This attribute is useless.");
ae92bd17 2823 return snprintf(buf, PAGE_SIZE, "0x%08x\n", hotkey_orig_mask);
a0416420
HMH		 2824}
2825
b4dd04ac 2826static DEVICE_ATTR_RO(hotkey_bios_mask);
a0416420 2827
9b010de5
HMH		 2828/* sysfs hotkey all_mask ----------------------------------------------- */
2829static ssize_t hotkey_all_mask_show(struct device *dev,
2830 struct device_attribute *attr,
2831 char *buf)
2832{
01e88f25
HMH		 2833 return snprintf(buf, PAGE_SIZE, "0x%08x\n",
2834 hotkey_all_mask | hotkey_source_mask);
9b010de5
HMH		 2835}
2836
b4dd04ac 2837static DEVICE_ATTR_RO(hotkey_all_mask);
9b010de5 2838
0118c2d3
DW		 2839/* sysfs hotkey all_mask ----------------------------------------------- */
2840static ssize_t hotkey_adaptive_all_mask_show(struct device *dev,
2841 struct device_attribute *attr,
2842 char *buf)
2843{
2844 return snprintf(buf, PAGE_SIZE, "0x%08x\n",
2845 hotkey_adaptive_all_mask | hotkey_source_mask);
2846}
2847
2848static DEVICE_ATTR_RO(hotkey_adaptive_all_mask);
2849
9b010de5
HMH		 2850/* sysfs hotkey recommended_mask --------------------------------------- */
2851static ssize_t hotkey_recommended_mask_show(struct device *dev,
2852 struct device_attribute *attr,
2853 char *buf)
2854{
2855 return snprintf(buf, PAGE_SIZE, "0x%08x\n",
01e88f25
HMH		 2856 (hotkey_all_mask | hotkey_source_mask)
2857 & ~hotkey_reserved_mask);
9b010de5
HMH		 2858}
2859
b4dd04ac 2860static DEVICE_ATTR_RO(hotkey_recommended_mask);
9b010de5 2861
01e88f25
HMH		 2862#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
2863
2864/* sysfs hotkey hotkey_source_mask ------------------------------------- */
2865static ssize_t hotkey_source_mask_show(struct device *dev,
2866 struct device_attribute *attr,
2867 char *buf)
2868{
2869 return snprintf(buf, PAGE_SIZE, "0x%08x\n", hotkey_source_mask);
2870}
2871
2872static ssize_t hotkey_source_mask_store(struct device *dev,
2873 struct device_attribute *attr,
2874 const char *buf, size_t count)
2875{
2876 unsigned long t;
0d922e3b
HMH		 2877 u32 r_ev;
2878 int rc;
01e88f25
HMH		 2879
2880 if (parse_strtoul(buf, 0xffffffffUL, &t) ||
2881 ((t & ~TPACPI_HKEY_NVRAM_KNOWN_MASK) != 0))
2882 return -EINVAL;
2883
7646ea88 2884 if (mutex_lock_killable(&hotkey_mutex))
01e88f25
HMH		 2885 return -ERESTARTSYS;
2886
2887 HOTKEY_CONFIG_CRITICAL_START
2888 hotkey_source_mask = t;
2889 HOTKEY_CONFIG_CRITICAL_END
2890
0d922e3b
HMH		 2891 rc = hotkey_mask_set((hotkey_user_mask | hotkey_driver_mask) &
2892 ~hotkey_source_mask);
db25f16d 2893 hotkey_poll_setup(true);
0d922e3b
HMH		 2894
2895 /* check if events needed by the driver got disabled */
2896 r_ev = hotkey_driver_mask & ~(hotkey_acpi_mask & hotkey_all_mask)
2897 & ~hotkey_source_mask & TPACPI_HKEY_NVRAM_KNOWN_MASK;
01e88f25
HMH		 2898
2899 mutex_unlock(&hotkey_mutex);
2900
0d922e3b 2901 if (rc < 0)
5cac62ac 2902 pr_err("hotkey_source_mask: failed to update the firmware event mask!\n");
0d922e3b
HMH		 2903
2904 if (r_ev)
5cac62ac 2905 pr_notice("hotkey_source_mask: some important events were disabled: 0x%04x\n",
0978e012 2906 r_ev);
0d922e3b 2907
56e2c200
HMH		 2908 tpacpi_disclose_usertask("hotkey_source_mask", "set to 0x%08lx\n", t);
2909
0d922e3b 2910 return (rc < 0) ? rc : count;
01e88f25
HMH		 2911}
2912
b4dd04ac 2913static DEVICE_ATTR_RW(hotkey_source_mask);
01e88f25
HMH		 2914
2915/* sysfs hotkey hotkey_poll_freq --------------------------------------- */
2916static ssize_t hotkey_poll_freq_show(struct device *dev,
2917 struct device_attribute *attr,
2918 char *buf)
2919{
2920 return snprintf(buf, PAGE_SIZE, "%d\n", hotkey_poll_freq);
2921}
2922
2923static ssize_t hotkey_poll_freq_store(struct device *dev,
2924 struct device_attribute *attr,
2925 const char *buf, size_t count)
2926{
2927 unsigned long t;
2928
2929 if (parse_strtoul(buf, 25, &t))
2930 return -EINVAL;
2931
7646ea88 2932 if (mutex_lock_killable(&hotkey_mutex))
01e88f25
HMH		 2933 return -ERESTARTSYS;
2934
db25f16d
HMH		 2935 hotkey_poll_set_freq(t);
2936 hotkey_poll_setup(true);
01e88f25 2937
01e88f25
HMH		 2938 mutex_unlock(&hotkey_mutex);
2939
56e2c200
HMH		 2940 tpacpi_disclose_usertask("hotkey_poll_freq", "set to %lu\n", t);
2941
01e88f25
HMH		 2942 return count;
2943}
2944
b4dd04ac 2945static DEVICE_ATTR_RW(hotkey_poll_freq);
01e88f25
HMH		 2946
2947#endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
2948
50ebec09 2949/* sysfs hotkey radio_sw (pollable) ------------------------------------ */
74941a69
HMH		 2950static ssize_t hotkey_radio_sw_show(struct device *dev,
2951 struct device_attribute *attr,
2952 char *buf)
2953{
19d337df
JB		 2954 int res;
2955 res = hotkey_get_wlsw();
74941a69
HMH		 2956 if (res < 0)
2957 return res;
2958
19d337df
JB		 2959 /* Opportunistic update */
2960 tpacpi_rfk_update_hwblock_state((res == TPACPI_RFK_RADIO_OFF));
2961
2962 return snprintf(buf, PAGE_SIZE, "%d\n",
2963 (res == TPACPI_RFK_RADIO_OFF) ? 0 : 1);
74941a69
HMH		 2964}
2965
b4dd04ac 2966static DEVICE_ATTR_RO(hotkey_radio_sw);
74941a69 2967
50ebec09
HMH		 2968static void hotkey_radio_sw_notify_change(void)
2969{
2970 if (tp_features.hotkey_wlsw)
2971 sysfs_notify(&tpacpi_pdev->dev.kobj, NULL,
2972 "hotkey_radio_sw");
2973}
2974
6c231bd5
HMH		 2975/* sysfs hotkey tablet mode (pollable) --------------------------------- */
2976static ssize_t hotkey_tablet_mode_show(struct device *dev,
2977 struct device_attribute *attr,
2978 char *buf)
2979{
2980 int res, s;
2981 res = hotkey_get_tablet_mode(&s);
2982 if (res < 0)
2983 return res;
2984
2985 return snprintf(buf, PAGE_SIZE, "%d\n", !!s);
2986}
2987
b4dd04ac 2988static DEVICE_ATTR_RO(hotkey_tablet_mode);
6c231bd5
HMH		 2989
2990static void hotkey_tablet_mode_notify_change(void)
2991{
2992 if (tp_features.hotkey_tablet)
2993 sysfs_notify(&tpacpi_pdev->dev.kobj, NULL,
2994 "hotkey_tablet_mode");
2995}
2996
50ebec09 2997/* sysfs wakeup reason (pollable) -------------------------------------- */
a713b4d7
HMH		 2998static ssize_t hotkey_wakeup_reason_show(struct device *dev,
2999 struct device_attribute *attr,
3000 char *buf)
3001{
3002 return snprintf(buf, PAGE_SIZE, "%d\n", hotkey_wakeup_reason);
3003}
3004
5fb73bc2 3005static DEVICE_ATTR(wakeup_reason, S_IRUGO, hotkey_wakeup_reason_show, NULL);
a713b4d7 3006
1d5a2b54 3007static void hotkey_wakeup_reason_notify_change(void)
50ebec09 3008{
0d922e3b
HMH		 3009 sysfs_notify(&tpacpi_pdev->dev.kobj, NULL,
3010 "wakeup_reason");
50ebec09
HMH		 3011}
3012
3013/* sysfs wakeup hotunplug_complete (pollable) -------------------------- */
a713b4d7
HMH		 3014static ssize_t hotkey_wakeup_hotunplug_complete_show(struct device *dev,
3015 struct device_attribute *attr,
3016 char *buf)
3017{
3018 return snprintf(buf, PAGE_SIZE, "%d\n", hotkey_autosleep_ack);
3019}
3020
5fb73bc2
BM		 3021static DEVICE_ATTR(wakeup_hotunplug_complete, S_IRUGO,
3022 hotkey_wakeup_hotunplug_complete_show, NULL);
a713b4d7 3023
1d5a2b54 3024static void hotkey_wakeup_hotunplug_complete_notify_change(void)
50ebec09 3025{
0d922e3b
HMH		 3026 sysfs_notify(&tpacpi_pdev->dev.kobj, NULL,
3027 "wakeup_hotunplug_complete");
50ebec09
HMH		 3028}
3029
b790ceeb
BN		 3030/* sysfs adaptive kbd mode --------------------------------------------- */
3031
3032static int adaptive_keyboard_get_mode(void);
3033static int adaptive_keyboard_set_mode(int new_mode);
3034
3035enum ADAPTIVE_KEY_MODE {
3036 HOME_MODE,
3037 WEB_BROWSER_MODE,
3038 WEB_CONFERENCE_MODE,
3039 FUNCTION_MODE,
3040 LAYFLAT_MODE
3041};
3042
3043static ssize_t adaptive_kbd_mode_show(struct device *dev,
3044 struct device_attribute *attr,
3045 char *buf)
3046{
abf9dc0d 3047 int current_mode;
b790ceeb
BN		 3048
3049 current_mode = adaptive_keyboard_get_mode();
3050 if (current_mode < 0)
3051 return current_mode;
3052
3053 return snprintf(buf, PAGE_SIZE, "%d\n", current_mode);
3054}
3055
3056static ssize_t adaptive_kbd_mode_store(struct device *dev,
3057 struct device_attribute *attr,
3058 const char *buf, size_t count)
3059{
3060 unsigned long t;
3061 int res;
3062
3063 if (parse_strtoul(buf, LAYFLAT_MODE, &t))
3064 return -EINVAL;
3065
3066 res = adaptive_keyboard_set_mode(t);
3067 return (res < 0) ? res : count;
3068}
3069
3070static DEVICE_ATTR_RW(adaptive_kbd_mode);
3071
3072static struct attribute *adaptive_kbd_attributes[] = {
3073 &dev_attr_adaptive_kbd_mode.attr,
3074 NULL
3075};
3076
3077static const struct attribute_group adaptive_kbd_attr_group = {
3078 .attrs = adaptive_kbd_attributes,
3079};
3080
a0416420
HMH		 3081/* --------------------------------------------------------------------- */
3082
ff80f137
HMH		 3083static struct attribute *hotkey_attributes[] __initdata = {
3084 &dev_attr_hotkey_enable.attr,
01e88f25 3085 &dev_attr_hotkey_bios_enabled.attr,
0d922e3b 3086 &dev_attr_hotkey_bios_mask.attr,
5fb73bc2
BM		 3087 &dev_attr_wakeup_reason.attr,
3088 &dev_attr_wakeup_hotunplug_complete.attr,
01e88f25
HMH		 3089 &dev_attr_hotkey_mask.attr,
3090 &dev_attr_hotkey_all_mask.attr,
0118c2d3 3091 &dev_attr_hotkey_adaptive_all_mask.attr,
01e88f25 3092 &dev_attr_hotkey_recommended_mask.attr,
0d922e3b 3093#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
01e88f25
HMH		 3094 &dev_attr_hotkey_source_mask.attr,
3095 &dev_attr_hotkey_poll_freq.attr,
3096#endif
ff80f137
HMH		 3097};
3098
19d337df
JB		 3099/*
3100 * Sync both the hw and sw blocking state of all switches
3101 */
733e27c1
HMH		 3102static void tpacpi_send_radiosw_update(void)
3103{
3104 int wlsw;
3105
19d337df
JB		 3106 /*
3107 * We must sync all rfkill controllers *before* issuing any
3108 * rfkill input events, or we will race the rfkill core input
3109 * handler.
3110 *
c8440336 3111 * tpacpi_inputdev_send_mutex works as a synchronization point
19d337df
JB		 3112 * for the above.
3113 *
3114 * We optimize to avoid numerous calls to hotkey_get_wlsw.
3115 */
3116
3117 wlsw = hotkey_get_wlsw();
3118
3119 /* Sync hw blocking state first if it is hw-blocked */
3120 if (wlsw == TPACPI_RFK_RADIO_OFF)
3121 tpacpi_rfk_update_hwblock_state(true);
0e74dc26 3122
19d337df
JB		 3123 /* Sync hw blocking state last if it is hw-unblocked */
3124 if (wlsw == TPACPI_RFK_RADIO_ON)
3125 tpacpi_rfk_update_hwblock_state(false);
3126
3127 /* Issue rfkill input event for WLSW switch */
3128 if (!(wlsw < 0)) {
733e27c1
HMH		 3129 mutex_lock(&tpacpi_inputdev_send_mutex);
3130
3131 input_report_switch(tpacpi_inputdev,
19d337df 3132 SW_RFKILL_ALL, (wlsw > 0));
733e27c1
HMH		 3133 input_sync(tpacpi_inputdev);
3134
3135 mutex_unlock(&tpacpi_inputdev_send_mutex);
3136 }
19d337df
JB		 3137
3138 /*
3139 * this can be unconditional, as we will poll state again
3140 * if userspace uses the notify to read data
3141 */
733e27c1
HMH		 3142 hotkey_radio_sw_notify_change();
3143}
3144
9c0a76e1
HMH		 3145static void hotkey_exit(void)
3146{
3147#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
db25f16d 3148 mutex_lock(&hotkey_mutex);
9c0a76e1 3149 hotkey_poll_stop_sync();
db25f16d 3150 mutex_unlock(&hotkey_mutex);
9c0a76e1
HMH		 3151#endif
3152
3153 if (hotkey_dev_attributes)
3154 delete_attr_set(hotkey_dev_attributes, &tpacpi_pdev->dev.kobj);
3155
4be73005 3156 dbg_printk(TPACPI_DBG_EXIT | TPACPI_DBG_HKEY,
0d922e3b
HMH		 3157 "restoring original HKEY status and mask\n");
3158 /* yes, there is a bitwise or below, we want the
3159 * functions to be called even if one of them fail */
3160 if (((tp_features.hotkey_mask &&
3161 hotkey_mask_set(hotkey_orig_mask)) |
3162 hotkey_status_set(false)) != 0)
5cac62ac 3163 pr_err("failed to restore hot key mask to BIOS defaults\n");
9c0a76e1
HMH		 3164}
3165
de4c8cc7
HMH		 3166static void __init hotkey_unmap(const unsigned int scancode)
3167{
3168 if (hotkey_keycode_map[scancode] != KEY_RESERVED) {
3169 clear_bit(hotkey_keycode_map[scancode],
3170 tpacpi_inputdev->keybit);
3171 hotkey_keycode_map[scancode] = KEY_RESERVED;
3172 }
3173}
3174
0d922e3b
HMH		 3175/*
3176 * HKEY quirks:
3177 * TPACPI_HK_Q_INIMASK: Supports FN+F3,FN+F4,FN+F12
3178 */
3179
3180#define TPACPI_HK_Q_INIMASK 0x0001
3181
3182static const struct tpacpi_quirk tpacpi_hotkey_qtable[] __initconst = {
3183 TPACPI_Q_IBM('I', 'H', TPACPI_HK_Q_INIMASK), /* 600E */
3184 TPACPI_Q_IBM('I', 'N', TPACPI_HK_Q_INIMASK), /* 600E */
3185 TPACPI_Q_IBM('I', 'D', TPACPI_HK_Q_INIMASK), /* 770, 770E, 770ED */
3186 TPACPI_Q_IBM('I', 'W', TPACPI_HK_Q_INIMASK), /* A20m */
3187 TPACPI_Q_IBM('I', 'V', TPACPI_HK_Q_INIMASK), /* A20p */
3188 TPACPI_Q_IBM('1', '0', TPACPI_HK_Q_INIMASK), /* A21e, A22e */
3189 TPACPI_Q_IBM('K', 'U', TPACPI_HK_Q_INIMASK), /* A21e */
3190 TPACPI_Q_IBM('K', 'X', TPACPI_HK_Q_INIMASK), /* A21m, A22m */
3191 TPACPI_Q_IBM('K', 'Y', TPACPI_HK_Q_INIMASK), /* A21p, A22p */
3192 TPACPI_Q_IBM('1', 'B', TPACPI_HK_Q_INIMASK), /* A22e */
3193 TPACPI_Q_IBM('1', '3', TPACPI_HK_Q_INIMASK), /* A22m */
3194 TPACPI_Q_IBM('1', 'E', TPACPI_HK_Q_INIMASK), /* A30/p (0) */
3195 TPACPI_Q_IBM('1', 'C', TPACPI_HK_Q_INIMASK), /* R30 */
3196 TPACPI_Q_IBM('1', 'F', TPACPI_HK_Q_INIMASK), /* R31 */
3197 TPACPI_Q_IBM('I', 'Y', TPACPI_HK_Q_INIMASK), /* T20 */
3198 TPACPI_Q_IBM('K', 'Z', TPACPI_HK_Q_INIMASK), /* T21 */
3199 TPACPI_Q_IBM('1', '6', TPACPI_HK_Q_INIMASK), /* T22 */
3200 TPACPI_Q_IBM('I', 'Z', TPACPI_HK_Q_INIMASK), /* X20, X21 */
3201 TPACPI_Q_IBM('1', 'D', TPACPI_HK_Q_INIMASK), /* X22, X23, X24 */
3202};
3203
fc6e7568
HMH		 3204typedef u16 tpacpi_keymap_entry_t;
3205typedef tpacpi_keymap_entry_t tpacpi_keymap_t[TPACPI_HOTKEY_MAP_LEN];
d1e14dca 3206
b3180028
L		 3207static int hotkey_init_tablet_mode(void)
3208{
cb2bf251
DH		 3209 int in_tablet_mode = 0, res;
3210 char *type = NULL;
b3180028 3211
dda3ec0a
BB		 3212 if (acpi_evalf(hkey_handle, &res, "GMMS", "qdd", 0)) {
3213 int has_tablet_mode;
3214
3215 in_tablet_mode = hotkey_gmms_get_tablet_mode(res,
3216 &has_tablet_mode);
685489a3
HG		 3217 /*
3218 * The Yoga 11e series has 2 accelerometers described by a
3219 * BOSC0200 ACPI node. This setup relies on a Windows service
3220 * which calls special ACPI methods on this node to report
3221 * the laptop/tent/tablet mode to the EC. The bmc150 iio driver
3222 * does not support this, so skip the hotkey on these models.
3223 */
153cca9c 3224 if (has_tablet_mode && !dual_accel_detect())
dda3ec0a
BB		 3225 tp_features.hotkey_tablet = TP_HOTKEY_TABLET_USES_GMMS;
3226 type = "GMMS";
3227 } else if (acpi_evalf(hkey_handle, &res, "MHKG", "qd")) {
b03f4d49 3228 /* For X41t, X60t, X61t Tablets... */
b3180028
L		 3229 tp_features.hotkey_tablet = TP_HOTKEY_TABLET_USES_MHKG;
3230 in_tablet_mode = !!(res & TP_HOTKEY_TABLET_MASK);
3231 type = "MHKG";
3232 }
3233
3234 if (!tp_features.hotkey_tablet)
3235 return 0;
3236
3237 pr_info("Tablet mode switch found (type: %s), currently in %s mode\n",
3238 type, in_tablet_mode ? "tablet" : "laptop");
3239
3240 res = add_to_attr_set(hotkey_dev_attributes,
3241 &dev_attr_hotkey_tablet_mode.attr);
3242 if (res)
3243 return -1;
3244
3245 return in_tablet_mode;
3246}
3247
a5763f22 3248static int __init hotkey_init(struct ibm_init_struct *iibm)
56b6aeb0 3249{
0f089147
HMH		 3250 /* Requirements for changing the default keymaps:
3251 *
3252 * 1. Many of the keys are mapped to KEY_RESERVED for very
3253 * good reasons. Do not change them unless you have deep
3254 * knowledge on the IBM and Lenovo ThinkPad firmware for
3255 * the various ThinkPad models. The driver behaves
3256 * differently for KEY_RESERVED: such keys have their
3257 * hot key mask *unset* in mask_recommended, and also
3258 * in the initial hot key mask programmed into the
3259 * firmware at driver load time, which means the firm-
3260 * ware may react very differently if you change them to
3261 * something else;
3262 *
3263 * 2. You must be subscribed to the linux-thinkpad and
3264 * ibm-acpi-devel mailing lists, and you should read the
3265 * list archives since 2007 if you want to change the
3266 * keymaps. This requirement exists so that you will
3267 * know the past history of problems with the thinkpad-
3268 * acpi driver keymaps, and also that you will be
3269 * listening to any bug reports;
3270 *
3271 * 3. Do not send thinkpad-acpi specific patches directly to
3272 * for merging, *ever*. Send them to the linux-acpi
3273 * mailinglist for comments. Merging is to be done only
3274 * through acpi-test and the ACPI maintainer.
3275 *
3276 * If the above is too much to ask, don't change the keymap.
3277 * Ask the thinkpad-acpi maintainer to do it, instead.
3278 */
d1e14dca
HMH		 3279
3280 enum keymap_index {
3281 TPACPI_KEYMAP_IBM_GENERIC = 0,
3282 TPACPI_KEYMAP_LENOVO_GENERIC,
3283 };
3284
3285 static const tpacpi_keymap_t tpacpi_keymaps[] __initconst = {
3286 /* Generic keymap for IBM ThinkPads */
3287 [TPACPI_KEYMAP_IBM_GENERIC] = {
edf0e0e5 3288 /* Scan Codes 0x00 to 0x0B: ACPI HKEY FN+F1..F12 */
d1e14dca 3289 KEY_FN_F1, KEY_BATTERY, KEY_COFFEE, KEY_SLEEP,
edf0e0e5
HMH		 3290 KEY_WLAN, KEY_FN_F6, KEY_SWITCHVIDEOMODE, KEY_FN_F8,
3291 KEY_FN_F9, KEY_FN_F10, KEY_FN_F11, KEY_SUSPEND,
0f089147
HMH		 3292
3293 /* Scan codes 0x0C to 0x1F: Other ACPI HKEY hot keys */
edf0e0e5
HMH		 3294 KEY_UNKNOWN, /* 0x0C: FN+BACKSPACE */
3295 KEY_UNKNOWN, /* 0x0D: FN+INSERT */
3296 KEY_UNKNOWN, /* 0x0E: FN+DELETE */
0f089147 3297
0d922e3b 3298 /* brightness: firmware always reacts to them */
e927c08d 3299 KEY_RESERVED, /* 0x0F: FN+HOME (brightness up) */
e927c08d 3300 KEY_RESERVED, /* 0x10: FN+END (brightness down) */
0f089147
HMH		 3301
3302 /* Thinklight: firmware always react to it */
edf0e0e5 3303 KEY_RESERVED, /* 0x11: FN+PGUP (thinklight toggle) */
0f089147 3304
edf0e0e5
HMH		 3305 KEY_UNKNOWN, /* 0x12: FN+PGDOWN */
3306 KEY_ZOOM, /* 0x13: FN+SPACE (zoom) */
0f089147
HMH		 3307
3308 /* Volume: firmware always react to it and reprograms
3309 * the built-in *extra* mixer. Never map it to control
3310 * another mixer by default. */
e927c08d
HMH		 3311 KEY_RESERVED, /* 0x14: VOLUME UP */
3312 KEY_RESERVED, /* 0x15: VOLUME DOWN */
3313 KEY_RESERVED, /* 0x16: MUTE */
0f089147 3314
edf0e0e5 3315 KEY_VENDOR, /* 0x17: Thinkpad/AccessIBM/Lenovo */
0f089147 3316
edf0e0e5
HMH		 3317 /* (assignments unknown, please report if found) */
3318 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN,
3319 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN,
6a68d855
BN		 3320
3321 /* No assignments, only used for Adaptive keyboards. */
3322 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN,
3323 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN,
3324 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN,
3325 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN,
3326 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN,
696c6523
CK		 3327
3328 /* No assignment, used for newer Lenovo models */
3329 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN,
3330 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN,
3331 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN,
3332 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN,
3333 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN,
3334 KEY_UNKNOWN, KEY_UNKNOWN
3335
d1e14dca
HMH		 3336 },
3337
3338 /* Generic keymap for Lenovo ThinkPads */
3339 [TPACPI_KEYMAP_LENOVO_GENERIC] = {
edf0e0e5
HMH		 3340 /* Scan Codes 0x00 to 0x0B: ACPI HKEY FN+F1..F12 */
3341 KEY_FN_F1, KEY_COFFEE, KEY_BATTERY, KEY_SLEEP,
2b754262 3342 KEY_WLAN, KEY_CAMERA, KEY_SWITCHVIDEOMODE, KEY_FN_F8,
edf0e0e5 3343 KEY_FN_F9, KEY_FN_F10, KEY_FN_F11, KEY_SUSPEND,
0f089147
HMH		 3344
3345 /* Scan codes 0x0C to 0x1F: Other ACPI HKEY hot keys */
edf0e0e5
HMH		 3346 KEY_UNKNOWN, /* 0x0C: FN+BACKSPACE */
3347 KEY_UNKNOWN, /* 0x0D: FN+INSERT */
3348 KEY_UNKNOWN, /* 0x0E: FN+DELETE */
0f089147 3349
de4c8cc7
HMH		 3350 /* These should be enabled --only-- when ACPI video
3351 * is disabled (i.e. in "vendor" mode), and are handled
3352 * in a special way by the init code */
3353 KEY_BRIGHTNESSUP, /* 0x0F: FN+HOME (brightness up) */
3354 KEY_BRIGHTNESSDOWN, /* 0x10: FN+END (brightness down) */
0f089147 3355
edf0e0e5 3356 KEY_RESERVED, /* 0x11: FN+PGUP (thinklight toggle) */
0f089147 3357
edf0e0e5
HMH		 3358 KEY_UNKNOWN, /* 0x12: FN+PGDOWN */
3359 KEY_ZOOM, /* 0x13: FN+SPACE (zoom) */
0f089147
HMH		 3360
3361 /* Volume: z60/z61, T60 (BIOS version?): firmware always
3362 * react to it and reprograms the built-in *extra* mixer.
3363 * Never map it to control another mixer by default.
3364 *
3365 * T60?, T61, R60?, R61: firmware and EC tries to send
3366 * these over the regular keyboard, so these are no-ops,
3367 * but there are still weird bugs re. MUTE, so do not
3368 * change unless you get test reports from all Lenovo
3369 * models. May cause the BIOS to interfere with the
3370 * HDA mixer.
3371 */
e927c08d
HMH		 3372 KEY_RESERVED, /* 0x14: VOLUME UP */
3373 KEY_RESERVED, /* 0x15: VOLUME DOWN */
3374 KEY_RESERVED, /* 0x16: MUTE */
0f089147 3375
edf0e0e5 3376 KEY_VENDOR, /* 0x17: Thinkpad/AccessIBM/Lenovo */
0f089147 3377
33009557
AL		 3378 /* (assignments unknown, please report if found) */
3379 KEY_UNKNOWN, KEY_UNKNOWN,
3380
3381 /*
3382 * The mic mute button only sends 0x1a. It does not
3383 * automatically mute the mic or change the mute light.
3384 */
3385 KEY_MICMUTE, /* 0x1a: Mic mute (since ?400 or so) */
3386
edf0e0e5 3387 /* (assignments unknown, please report if found) */
33009557 3388 KEY_UNKNOWN,
8b9dd4fa
HG		 3389
3390 /* Extra keys in use since the X240 / T440 / T540 */
4beb81d1 3391 KEY_CONFIG, KEY_SEARCH, KEY_SCALE, KEY_FILE,
6a68d855
BN		 3392
3393 /*
3394 * These are the adaptive keyboard keycodes for Carbon X1 2014.
3395 * The first item in this list is the Mute button which is
3396 * emitted with 0x103 through
3397 * adaptive_keyboard_hotkey_notify_hotkey() when the sound
3398 * symbol is held.
3399 * We'll need to offset those by 0x20.
3400 */
3401 KEY_RESERVED, /* Mute held, 0x103 */
3402 KEY_BRIGHTNESS_MIN, /* Backlight off */
3403 KEY_RESERVED, /* Clipping tool */
3404 KEY_RESERVED, /* Cloud */
3405 KEY_RESERVED,
3406 KEY_VOICECOMMAND, /* Voice */
3407 KEY_RESERVED,
3408 KEY_RESERVED, /* Gestures */
3409 KEY_RESERVED,
3410 KEY_RESERVED,
3411 KEY_RESERVED,
3412 KEY_CONFIG, /* Settings */
3413 KEY_RESERVED, /* New tab */
3414 KEY_REFRESH, /* Reload */
3415 KEY_BACK, /* Back */
3416 KEY_RESERVED, /* Microphone down */
3417 KEY_RESERVED, /* Microphone up */
3418 KEY_RESERVED, /* Microphone cancellation */
3419 KEY_RESERVED, /* Camera mode */
3420 KEY_RESERVED, /* Rotate display, 0x116 */
696c6523
CK		 3421
3422 /*
3423 * These are found in 2017 models (e.g. T470s, X270).
3424 * The lowest known value is 0x311, which according to
3425 * the manual should launch a user defined favorite
3426 * application.
3427 *
3428 * The offset for these is TP_ACPI_HOTKEYSCAN_EXTENDED_START,
3429 * corresponding to 0x34.
3430 */
3431
3432 /* (assignments unknown, please report if found) */
3433 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN,
3434 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN,
3435 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN,
3436 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN,
3437 KEY_UNKNOWN,
3438
7ed7748d 3439 KEY_BOOKMARKS, /* Favorite app, 0x311 */
e2c8c4ec 3440 KEY_SELECTIVE_SCREENSHOT, /* Clipping tool */
7ed7748d
HG		 3441 KEY_CALC, /* Calculator (above numpad, P52) */
3442 KEY_BLUETOOTH, /* Bluetooth */
3443 KEY_KEYBOARD, /* Keyboard, 0x315 */
3444 KEY_FN_RIGHT_SHIFT, /* Fn + right Shift */
3445 KEY_NOTIFICATION_CENTER, /* Notification Center */
3446 KEY_PICKUP_PHONE, /* Answer incoming call */
3447 KEY_HANGUP_PHONE, /* Decline incoming call */
d1e14dca 3448 },
edf0e0e5
HMH		 3449 };
3450
d1e14dca
HMH		 3451 static const struct tpacpi_quirk tpacpi_keymap_qtable[] __initconst = {
3452 /* Generic maps (fallback) */
3453 {
3454 .vendor = PCI_VENDOR_ID_IBM,
3455 .bios = TPACPI_MATCH_ANY, .ec = TPACPI_MATCH_ANY,
3456 .quirks = TPACPI_KEYMAP_IBM_GENERIC,
3457 },
3458 {
3459 .vendor = PCI_VENDOR_ID_LENOVO,
3460 .bios = TPACPI_MATCH_ANY, .ec = TPACPI_MATCH_ANY,
3461 .quirks = TPACPI_KEYMAP_LENOVO_GENERIC,
3462 },
3463 };
3464
3465#define TPACPI_HOTKEY_MAP_SIZE sizeof(tpacpi_keymap_t)
fc6e7568 3466#define TPACPI_HOTKEY_MAP_TYPESIZE sizeof(tpacpi_keymap_entry_t)
edf0e0e5 3467
6a38abbf 3468 int res, i;
74941a69 3469 int status;
1b6521dc 3470 int hkeyv;
d89a727a
HMH		 3471 bool radiosw_state = false;
3472 bool tabletsw_state = false;
b86c4722 3473
0d922e3b 3474 unsigned long quirks;
d1e14dca 3475 unsigned long keymap_id;
0d922e3b 3476
56e2c200
HMH		 3477 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY,
3478 "initializing hotkey subdriver\n");
fe08bc4b 3479
6a38abbf 3480 BUG_ON(!tpacpi_inputdev);
01e88f25
HMH		 3481 BUG_ON(tpacpi_inputdev->open != NULL ||
3482 tpacpi_inputdev->close != NULL);
6a38abbf 3483
e0c7dfe7 3484 TPACPI_ACPIHANDLE_INIT(hkey);
40ca9fdf 3485 mutex_init(&hotkey_mutex);
5fba344c 3486
01e88f25 3487#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
01e88f25
HMH		 3488 mutex_init(&hotkey_thread_data_mutex);
3489#endif
3490
56b6aeb0 3491 /* hotkey not supported on 570 */
d8fd94d9 3492 tp_features.hotkey = hkey_handle != NULL;
56b6aeb0 3493
56e2c200
HMH		 3494 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY,
3495 "hotkeys are %s\n",
d8fd94d9 3496 str_supported(tp_features.hotkey));
fe08bc4b 3497
9c0a76e1
HMH		 3498 if (!tp_features.hotkey)
3499 return 1;
a0416420 3500
0d922e3b
HMH		 3501 quirks = tpacpi_check_quirks(tpacpi_hotkey_qtable,
3502 ARRAY_SIZE(tpacpi_hotkey_qtable));
3503
d64c81c4
HMH		 3504 tpacpi_disable_brightness_delay();
3505
0d922e3b
HMH		 3506 /* MUST have enough space for all attributes to be added to
3507 * hotkey_dev_attributes */
3508 hotkey_dev_attributes = create_attr_set(
3509 ARRAY_SIZE(hotkey_attributes) + 2,
3510 NULL);
9c0a76e1
HMH		 3511 if (!hotkey_dev_attributes)
3512 return -ENOMEM;
3513 res = add_many_to_attr_set(hotkey_dev_attributes,
3514 hotkey_attributes,
3515 ARRAY_SIZE(hotkey_attributes));
3516 if (res)
3517 goto err_exit;
3518
0d922e3b 3519 /* mask not supported on 600e/x, 770e, 770x, A21e, A2xm/p,
9c0a76e1
HMH		 3520 A30, R30, R31, T20-22, X20-21, X22-24. Detected by checking
3521 for HKEY interface version 0x100 */
3522 if (acpi_evalf(hkey_handle, &hkeyv, "MHKV", "qd")) {
0118c2d3
DW		 3523 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY,
3524 "firmware HKEY interface version: 0x%x\n",
3525 hkeyv);
3526
3527 switch (hkeyv >> 8) {
3528 case 1:
9c0a76e1
HMH		 3529 /*
3530 * MHKV 0x100 in A31, R40, R40e,
3531 * T4x, X31, and later
3532 */
0d922e3b
HMH		 3533
3534 /* Paranoia check AND init hotkey_all_mask */
3535 if (!acpi_evalf(hkey_handle, &hotkey_all_mask,
3536 "MHKA", "qd")) {
0118c2d3
DW		 3537 pr_err("missing MHKA handler, please report this to %s\n",
3538 TPACPI_MAIL);
3539 /* Fallback: pre-init for FN+F3,F4,F12 */
3540 hotkey_all_mask = 0x080cU;
3541 } else {
3542 tp_features.hotkey_mask = 1;
3543 }
3544 break;
3545
3546 case 2:
3547 /*
3548 * MHKV 0x200 in X1, T460s, X260, T560, X1 Tablet (2016)
3549 */
3550
3551 /* Paranoia check AND init hotkey_all_mask */
3552 if (!acpi_evalf(hkey_handle, &hotkey_all_mask,
3553 "MHKA", "dd", 1)) {
3554 pr_err("missing MHKA handler, please report this to %s\n",
0d922e3b
HMH		 3555 TPACPI_MAIL);
3556 /* Fallback: pre-init for FN+F3,F4,F12 */
3557 hotkey_all_mask = 0x080cU;
3558 } else {
3559 tp_features.hotkey_mask = 1;
3560 }
0118c2d3
DW		 3561
3562 /*
3563 * Check if we have an adaptive keyboard, like on the
3564 * Lenovo Carbon X1 2014 (2nd Gen).
3565 */
3566 if (acpi_evalf(hkey_handle, &hotkey_adaptive_all_mask,
3567 "MHKA", "dd", 2)) {
3568 if (hotkey_adaptive_all_mask != 0) {
3569 tp_features.has_adaptive_kbd = true;
3570 res = sysfs_create_group(
3571 &tpacpi_pdev->dev.kobj,
3572 &adaptive_kbd_attr_group);
3573 if (res)
3574 goto err_exit;
3575 }
3576 } else {
3577 tp_features.has_adaptive_kbd = false;
3578 hotkey_adaptive_all_mask = 0x0U;
3579 }
3580 break;
3581
3582 default:
3583 pr_err("unknown version of the HKEY interface: 0x%x\n",
3584 hkeyv);
3585 pr_err("please report this to %s\n", TPACPI_MAIL);
3586 break;
1b6521dc 3587 }
9c0a76e1 3588 }
56b6aeb0 3589
56e2c200
HMH		 3590 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY,
3591 "hotkey masks are %s\n",
9c0a76e1 3592 str_supported(tp_features.hotkey_mask));
fe08bc4b 3593
0d922e3b
HMH		 3594 /* Init hotkey_all_mask if not initialized yet */
3595 if (!tp_features.hotkey_mask && !hotkey_all_mask &&
3596 (quirks & TPACPI_HK_Q_INIMASK))
3597 hotkey_all_mask = 0x080cU; /* FN+F12, FN+F4, FN+F3 */
9b010de5 3598
0d922e3b 3599 /* Init hotkey_acpi_mask and hotkey_orig_mask */
9c0a76e1 3600 if (tp_features.hotkey_mask) {
0d922e3b
HMH		 3601 /* hotkey_source_mask *must* be zero for
3602 * the first hotkey_mask_get to return hotkey_orig_mask */
9c0a76e1
HMH		 3603 res = hotkey_mask_get();
3604 if (res)
3605 goto err_exit;
3606
0d922e3b
HMH		 3607 hotkey_orig_mask = hotkey_acpi_mask;
3608 } else {
3609 hotkey_orig_mask = hotkey_all_mask;
3610 hotkey_acpi_mask = hotkey_all_mask;
9c0a76e1 3611 }
74941a69 3612
a73f3091
HMH		 3613#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
3614 if (dbg_wlswemul) {
3615 tp_features.hotkey_wlsw = 1;
d89a727a 3616 radiosw_state = !!tpacpi_wlsw_emulstate;
0978e012 3617 pr_info("radio switch emulation enabled\n");
a73f3091
HMH		 3618 } else
3619#endif
9c0a76e1
HMH		 3620 /* Not all thinkpads have a hardware radio switch */
3621 if (acpi_evalf(hkey_handle, &status, "WLSW", "qd")) {
3622 tp_features.hotkey_wlsw = 1;
d89a727a 3623 radiosw_state = !!status;
0978e012 3624 pr_info("radio switch found; radios are %s\n",
9c0a76e1 3625 enabled(status, 0));
3a872080
HMH		 3626 }
3627 if (tp_features.hotkey_wlsw)
9c0a76e1
HMH		 3628 res = add_to_attr_set(hotkey_dev_attributes,
3629 &dev_attr_hotkey_radio_sw.attr);
74941a69 3630
b3180028
L		 3631 res = hotkey_init_tablet_mode();
3632 if (res < 0)
3633 goto err_exit;
3634
3635 tabletsw_state = res;
6c231bd5 3636
b3180028
L		 3637 res = register_attr_set_with_sysfs(hotkey_dev_attributes,
3638 &tpacpi_pdev->dev.kobj);
9c0a76e1
HMH		 3639 if (res)
3640 goto err_exit;
6a38abbf 3641
9c0a76e1 3642 /* Set up key map */
d1e14dca
HMH		 3643 keymap_id = tpacpi_check_quirks(tpacpi_keymap_qtable,
3644 ARRAY_SIZE(tpacpi_keymap_qtable));
3645 BUG_ON(keymap_id >= ARRAY_SIZE(tpacpi_keymaps));
3646 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY,
3647 "using keymap number %lu\n", keymap_id);
3648
35b7c808
FH		 3649 hotkey_keycode_map = kmemdup(&tpacpi_keymaps[keymap_id],
3650 TPACPI_HOTKEY_MAP_SIZE, GFP_KERNEL);
3651 if (!hotkey_keycode_map) {
3652 pr_err("failed to allocate memory for key map\n");
3653 res = -ENOMEM;
3654 goto err_exit;
3655 }
edf0e0e5 3656
792979c8 3657 input_set_capability(tpacpi_inputdev, EV_MSC, MSC_SCAN);
9c0a76e1
HMH		 3658 tpacpi_inputdev->keycodesize = TPACPI_HOTKEY_MAP_TYPESIZE;
3659 tpacpi_inputdev->keycodemax = TPACPI_HOTKEY_MAP_LEN;
3660 tpacpi_inputdev->keycode = hotkey_keycode_map;
3661 for (i = 0; i < TPACPI_HOTKEY_MAP_LEN; i++) {
3662 if (hotkey_keycode_map[i] != KEY_RESERVED) {
792979c8
HMH		 3663 input_set_capability(tpacpi_inputdev, EV_KEY,
3664 hotkey_keycode_map[i]);
9c0a76e1
HMH		 3665 } else {
3666 if (i < sizeof(hotkey_reserved_mask)*8)
3667 hotkey_reserved_mask |= 1 << i;
6a38abbf 3668 }
9c0a76e1 3669 }
6a38abbf 3670
9c0a76e1 3671 if (tp_features.hotkey_wlsw) {
792979c8 3672 input_set_capability(tpacpi_inputdev, EV_SW, SW_RFKILL_ALL);
d89a727a
HMH		 3673 input_report_switch(tpacpi_inputdev,
3674 SW_RFKILL_ALL, radiosw_state);
9c0a76e1
HMH		 3675 }
3676 if (tp_features.hotkey_tablet) {
792979c8 3677 input_set_capability(tpacpi_inputdev, EV_SW, SW_TABLET_MODE);
d89a727a
HMH		 3678 input_report_switch(tpacpi_inputdev,
3679 SW_TABLET_MODE, tabletsw_state);
9c0a76e1 3680 }
5c29d58f 3681
9c0a76e1 3682 /* Do not issue duplicate brightness change events to
77775838
HMH		 3683 * userspace. tpacpi_detect_brightness_capabilities() must have
3684 * been called before this point */
b33c6ce5 3685 if (acpi_video_get_backlight_type() != acpi_backlight_vendor) {
5cac62ac
AS		 3686 pr_info("This ThinkPad has standard ACPI backlight brightness control, supported by the ACPI video driver\n");
3687 pr_notice("Disabling thinkpad-acpi brightness events by default...\n");
9c0a76e1 3688
de4c8cc7
HMH		 3689 /* Disable brightness up/down on Lenovo thinkpads when
3690 * ACPI is handling them, otherwise it is plain impossible
3691 * for userspace to do something even remotely sane */
9c0a76e1
HMH		 3692 hotkey_reserved_mask |=
3693 (1 << TP_ACPI_HOTKEYSCAN_FNHOME)
3694 | (1 << TP_ACPI_HOTKEYSCAN_FNEND);
de4c8cc7
HMH		 3695 hotkey_unmap(TP_ACPI_HOTKEYSCAN_FNHOME);
3696 hotkey_unmap(TP_ACPI_HOTKEYSCAN_FNEND);
9c0a76e1 3697 }
ff80f137 3698
230d8cf2 3699#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
0d922e3b
HMH		 3700 hotkey_source_mask = TPACPI_HKEY_NVRAM_GOOD_MASK
3701 & ~hotkey_all_mask
3702 & ~hotkey_reserved_mask;
230d8cf2
HMH		 3703
3704 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY,
3705 "hotkey source mask 0x%08x, polling freq %u\n",
3706 hotkey_source_mask, hotkey_poll_freq);
3707#endif
3708
56e2c200
HMH		 3709 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY,
3710 "enabling firmware HKEY event interface...\n");
2586d566 3711 res = hotkey_status_set(true);
9c0a76e1
HMH		 3712 if (res) {
3713 hotkey_exit();
3714 return res;
3715 }
0d922e3b
HMH		 3716 res = hotkey_mask_set(((hotkey_all_mask & ~hotkey_reserved_mask)
3717 | hotkey_driver_mask)
3718 & ~hotkey_source_mask);
9c0a76e1
HMH		 3719 if (res < 0 && res != -ENXIO) {
3720 hotkey_exit();
3721 return res;
3722 }
0d922e3b
HMH		 3723 hotkey_user_mask = (hotkey_acpi_mask | hotkey_source_mask)
3724 & ~hotkey_reserved_mask;
3725 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY,
3726 "initial masks: user=0x%08x, fw=0x%08x, poll=0x%08x\n",
3727 hotkey_user_mask, hotkey_acpi_mask, hotkey_source_mask);
01e88f25 3728
9c0a76e1
HMH		 3729 tpacpi_inputdev->open = &hotkey_inputdev_open;
3730 tpacpi_inputdev->close = &hotkey_inputdev_close;
56b6aeb0 3731
db25f16d 3732 hotkey_poll_setup_safe(true);
56b6aeb0 3733
9c0a76e1 3734 return 0;
01e88f25 3735
9c0a76e1
HMH		 3736err_exit:
3737 delete_attr_set(hotkey_dev_attributes, &tpacpi_pdev->dev.kobj);
b790ceeb
BN		 3738 sysfs_remove_group(&tpacpi_pdev->dev.kobj,
3739 &adaptive_kbd_attr_group);
3740
9c0a76e1 3741 hotkey_dev_attributes = NULL;
a0416420 3742
72a979f0 3743 return (res < 0) ? res : 1;
56b6aeb0
HMH		 3744}
3745
3a9d20bd
SS		 3746/* Thinkpad X1 Carbon support 5 modes including Home mode, Web browser
3747 * mode, Web conference mode, Function mode and Lay-flat mode.
3748 * We support Home mode and Function mode currently.
3749 *
3750 * Will consider support rest of modes in future.
3751 *
3752 */
b201a47f 3753static const int adaptive_keyboard_modes[] = {
3a9d20bd
SS		 3754 HOME_MODE,
3755/* WEB_BROWSER_MODE = 2,
3756 WEB_CONFERENCE_MODE = 3, */
3757 FUNCTION_MODE
3758};
3759
3760#define DFR_CHANGE_ROW 0x101
3761#define DFR_SHOW_QUICKVIEW_ROW 0x102
6a68d855 3762#define FIRST_ADAPTIVE_KEY 0x103
3a9d20bd
SS		 3763
3764/* press Fn key a while second, it will switch to Function Mode. Then
3765 * release Fn key, previous mode be restored.
3766 */
3767static bool adaptive_keyboard_mode_is_saved;
3768static int adaptive_keyboard_prev_mode;
3769
f74587fb
BN		 3770static int adaptive_keyboard_get_mode(void)
3771{
3772 int mode = 0;
3773
3774 if (!acpi_evalf(hkey_handle, &mode, "GTRW", "dd", 0)) {
3775 pr_err("Cannot read adaptive keyboard mode\n");
3776 return -EIO;
3777 }
3778
3779 return mode;
3780}
3781
3782static int adaptive_keyboard_set_mode(int new_mode)
3783{
3784 if (new_mode < 0 ||
3785 new_mode > LAYFLAT_MODE)
3786 return -EINVAL;
3787
3788 if (!acpi_evalf(hkey_handle, NULL, "STRW", "vd", new_mode)) {
3789 pr_err("Cannot set adaptive keyboard mode\n");
3790 return -EIO;
3791 }
3792
3793 return 0;
3794}
3795
3a9d20bd
SS		 3796static int adaptive_keyboard_get_next_mode(int mode)
3797{
3798 size_t i;
3799 size_t max_mode = ARRAY_SIZE(adaptive_keyboard_modes) - 1;
3800
3801 for (i = 0; i <= max_mode; i++) {
3802 if (adaptive_keyboard_modes[i] == mode)
3803 break;
3804 }
3805
3806 if (i >= max_mode)
3807 i = 0;
3808 else
3809 i++;
3810
3811 return adaptive_keyboard_modes[i];
3812}
3813
3814static bool adaptive_keyboard_hotkey_notify_hotkey(unsigned int scancode)
3815{
abf9dc0d 3816 int current_mode = 0;
3a9d20bd 3817 int new_mode = 0;
6a68d855 3818 int keycode;
3a9d20bd
SS		 3819
3820 switch (scancode) {
3821 case DFR_CHANGE_ROW:
3822 if (adaptive_keyboard_mode_is_saved) {
3823 new_mode = adaptive_keyboard_prev_mode;
3824 adaptive_keyboard_mode_is_saved = false;
3825 } else {
f74587fb
BN		 3826 current_mode = adaptive_keyboard_get_mode();
3827 if (current_mode < 0)
3a9d20bd 3828 return false;
f74587fb
BN		 3829 new_mode = adaptive_keyboard_get_next_mode(
3830 current_mode);
3a9d20bd
SS		 3831 }
3832
f74587fb 3833 if (adaptive_keyboard_set_mode(new_mode) < 0)
3a9d20bd 3834 return false;
3a9d20bd
SS		 3835
3836 return true;
3837
3838 case DFR_SHOW_QUICKVIEW_ROW:
f74587fb
BN		 3839 current_mode = adaptive_keyboard_get_mode();
3840 if (current_mode < 0)
3a9d20bd 3841 return false;
3a9d20bd 3842
f74587fb
BN		 3843 adaptive_keyboard_prev_mode = current_mode;
3844 adaptive_keyboard_mode_is_saved = true;
3845
3846 if (adaptive_keyboard_set_mode (FUNCTION_MODE) < 0)
3847 return false;
3a9d20bd
SS		 3848 return true;
3849
3850 default:
741d98c7 3851 if (scancode < FIRST_ADAPTIVE_KEY ||
696c6523
CK		 3852 scancode >= FIRST_ADAPTIVE_KEY +
3853 TP_ACPI_HOTKEYSCAN_EXTENDED_START -
3854 TP_ACPI_HOTKEYSCAN_ADAPTIVE_START) {
6a68d855 3855 pr_info("Unhandled adaptive keyboard key: 0x%x\n",
5cac62ac 3856 scancode);
6a68d855
BN		 3857 return false;
3858 }
149c8c75
CK		 3859 keycode = hotkey_keycode_map[scancode - FIRST_ADAPTIVE_KEY +
3860 TP_ACPI_HOTKEYSCAN_ADAPTIVE_START];
6a68d855
BN		 3861 if (keycode != KEY_RESERVED) {
3862 mutex_lock(&tpacpi_inputdev_send_mutex);
3863
3864 input_report_key(tpacpi_inputdev, keycode, 1);
3865 input_sync(tpacpi_inputdev);
3866
3867 input_report_key(tpacpi_inputdev, keycode, 0);
3868 input_sync(tpacpi_inputdev);
3869
3870 mutex_unlock(&tpacpi_inputdev_send_mutex);
3871 }
3872 return true;
3a9d20bd
SS		 3873 }
3874}
3875
3827e7a3
HMH		 3876static bool hotkey_notify_hotkey(const u32 hkey,
3877 bool *send_acpi_ev,
3878 bool *ignore_acpi_ev)
3879{
3880 /* 0x1000-0x1FFF: key presses */
3881 unsigned int scancode = hkey & 0xfff;
3882 *send_acpi_ev = true;
3883 *ignore_acpi_ev = false;
3884
696c6523
CK		 3885 /*
3886 * Original events are in the 0x10XX range, the adaptive keyboard
3887 * found in 2014 X1 Carbon emits events are of 0x11XX. In 2017
3888 * models, additional keys are emitted through 0x13XX.
3889 */
3890 switch ((hkey >> 8) & 0xf) {
3891 case 0:
3892 if (scancode > 0 &&
3893 scancode <= TP_ACPI_HOTKEYSCAN_ADAPTIVE_START) {
3894 /* HKEY event 0x1001 is scancode 0x00 */
3895 scancode--;
3896 if (!(hotkey_source_mask & (1 << scancode))) {
3897 tpacpi_input_send_key_masked(scancode);
3898 *send_acpi_ev = false;
3899 } else {
3900 *ignore_acpi_ev = true;
3901 }
3902 return true;
3827e7a3 3903 }
696c6523
CK		 3904 break;
3905
3906 case 1:
3a9d20bd 3907 return adaptive_keyboard_hotkey_notify_hotkey(scancode);
696c6523
CK		 3908
3909 case 3:
3910 /* Extended keycodes start at 0x300 and our offset into the map
3911 * TP_ACPI_HOTKEYSCAN_EXTENDED_START. The calculated scancode
3912 * will be positive, but might not be in the correct range.
3913 */
3914 scancode -= (0x300 - TP_ACPI_HOTKEYSCAN_EXTENDED_START);
3915 if (scancode >= TP_ACPI_HOTKEYSCAN_EXTENDED_START &&
3916 scancode < TPACPI_HOTKEY_MAP_LEN) {
3917 tpacpi_input_send_key(scancode);
3918 return true;
3919 }
3920 break;
3827e7a3 3921 }
696c6523 3922
3827e7a3
HMH		 3923 return false;
3924}
3925
3926static bool hotkey_notify_wakeup(const u32 hkey,
3927 bool *send_acpi_ev,
3928 bool *ignore_acpi_ev)
3929{
3930 /* 0x2000-0x2FFF: Wakeup reason */
3931 *send_acpi_ev = true;
3932 *ignore_acpi_ev = false;
3933
3934 switch (hkey) {
67bcae6e
HMH		 3935 case TP_HKEY_EV_WKUP_S3_UNDOCK: /* suspend, undock */
3936 case TP_HKEY_EV_WKUP_S4_UNDOCK: /* hibernation, undock */
3827e7a3
HMH		 3937 hotkey_wakeup_reason = TP_ACPI_WAKEUP_UNDOCK;
3938 *ignore_acpi_ev = true;
3939 break;
3940
67bcae6e
HMH		 3941 case TP_HKEY_EV_WKUP_S3_BAYEJ: /* suspend, bay eject */
3942 case TP_HKEY_EV_WKUP_S4_BAYEJ: /* hibernation, bay eject */
3827e7a3
HMH		 3943 hotkey_wakeup_reason = TP_ACPI_WAKEUP_BAYEJ;
3944 *ignore_acpi_ev = true;
3945 break;
3946
67bcae6e
HMH		 3947 case TP_HKEY_EV_WKUP_S3_BATLOW: /* Battery on critical low level/S3 */
3948 case TP_HKEY_EV_WKUP_S4_BATLOW: /* Battery on critical low level/S4 */
0978e012 3949 pr_alert("EMERGENCY WAKEUP: battery almost empty\n");
106b4e66
HMH		 3950 /* how to auto-heal: */
3951 /* 2313: woke up from S3, go to S4/S5 */
3952 /* 2413: woke up from S4, go to S5 */
3953 break;
3954
3827e7a3
HMH		 3955 default:
3956 return false;
3957 }
3958
3959 if (hotkey_wakeup_reason != TP_ACPI_WAKEUP_NONE) {
0978e012 3960 pr_info("woke up due to a hot-unplug request...\n");
3827e7a3
HMH		 3961 hotkey_wakeup_reason_notify_change();
3962 }
3963 return true;
3964}
3965
a50245af
HMH		 3966static bool hotkey_notify_dockevent(const u32 hkey,
3967 bool *send_acpi_ev,
3968 bool *ignore_acpi_ev)
3969{
3970 /* 0x4000-0x4FFF: dock-related events */
3971 *send_acpi_ev = true;
3972 *ignore_acpi_ev = false;
3973
3974 switch (hkey) {
3975 case TP_HKEY_EV_UNDOCK_ACK:
3976 /* ACPI undock operation completed after wakeup */
3977 hotkey_autosleep_ack = 1;
3978 pr_info("undocked\n");
3979 hotkey_wakeup_hotunplug_complete_notify_change();
3980 return true;
3981
3982 case TP_HKEY_EV_HOTPLUG_DOCK: /* docked to port replicator */
3983 pr_info("docked into hotplug port replicator\n");
3984 return true;
3985 case TP_HKEY_EV_HOTPLUG_UNDOCK: /* undocked from port replicator */
3986 pr_info("undocked from hotplug port replicator\n");
3987 return true;
3988
0a053f01
AK		 3989 /*
3990 * Deliberately ignore attaching and detaching the keybord cover to avoid
3991 * duplicates from intel-vbtn, which already emits SW_TABLET_MODE events
3992 * to userspace.
3993 *
3994 * Please refer to the following thread for more information and a preliminary
3995 * implementation using the GTOP ("Get Tablet OPtions") interface that could be
3996 * extended to other attachment options of the ThinkPad X1 Tablet series, such as
3997 * the Pico cartridge dock module:
3998 * https://lore.kernel.org/platform-driver-x86/38cb8265-1e30-d547-9e12-b4ae290be737@a-kobel.de/
3999 */
4000 case TP_HKEY_EV_KBD_COVER_ATTACH:
4001 case TP_HKEY_EV_KBD_COVER_DETACH:
4002 *send_acpi_ev = false;
4003 *ignore_acpi_ev = true;
4004 return true;
4005
a50245af
HMH		 4006 default:
4007 return false;
4008 }
4009}
4010
3827e7a3
HMH		 4011static bool hotkey_notify_usrevent(const u32 hkey,
4012 bool *send_acpi_ev,
4013 bool *ignore_acpi_ev)
4014{
4015 /* 0x5000-0x5FFF: human interface helpers */
4016 *send_acpi_ev = true;
4017 *ignore_acpi_ev = false;
4018
4019 switch (hkey) {
67bcae6e
HMH		 4020 case TP_HKEY_EV_PEN_INSERTED: /* X61t: tablet pen inserted into bay */
4021 case TP_HKEY_EV_PEN_REMOVED: /* X61t: tablet pen removed from bay */
3827e7a3
HMH		 4022 return true;
4023
67bcae6e
HMH		 4024 case TP_HKEY_EV_TABLET_TABLET: /* X41t-X61t: tablet mode */
4025 case TP_HKEY_EV_TABLET_NOTEBOOK: /* X41t-X61t: normal mode */
3827e7a3
HMH		 4026 tpacpi_input_send_tabletsw();
4027 hotkey_tablet_mode_notify_change();
4028 *send_acpi_ev = false;
4029 return true;
4030
67bcae6e
HMH		 4031 case TP_HKEY_EV_LID_CLOSE: /* Lid closed */
4032 case TP_HKEY_EV_LID_OPEN: /* Lid opened */
4033 case TP_HKEY_EV_BRGHT_CHANGED: /* brightness changed */
176dd985 4034 /* do not propagate these events */
3827e7a3
HMH		 4035 *ignore_acpi_ev = true;
4036 return true;
4037
4038 default:
4039 return false;
4040 }
4041}
4042
9ebd9e83 4043static void thermal_dump_all_sensors(void);
1ac09656 4044static void palmsensor_refresh(void);
9ebd9e83 4045
2d43f671 4046static bool hotkey_notify_6xxx(const u32 hkey,
106b4e66
HMH		 4047 bool *send_acpi_ev,
4048 bool *ignore_acpi_ev)
4049{
2d43f671 4050 /* 0x6000-0x6FFF: thermal alarms/notices and keyboard events */
106b4e66
HMH		 4051 *send_acpi_ev = true;
4052 *ignore_acpi_ev = false;
4053
4054 switch (hkey) {
9ebd9e83 4055 case TP_HKEY_EV_THM_TABLE_CHANGED:
6e6bc5f6
HMH		 4056 pr_debug("EC reports: Thermal Table has changed\n");
4057 /* recommended action: do nothing, we don't have
4058 * Lenovo ATM information */
4059 return true;
4060 case TP_HKEY_EV_THM_CSM_COMPLETED:
4061 pr_debug("EC reports: Thermal Control Command set completed (DYTC)\n");
acf7f4a5
MP		 4062 /* Thermal event - pass on to event handler */
4063 tpacpi_driver_event(hkey);
6e6bc5f6
HMH		 4064 return true;
4065 case TP_HKEY_EV_THM_TRANSFM_CHANGED:
4066 pr_debug("EC reports: Thermal Transformation changed (GMTS)\n");
9ebd9e83
HMH		 4067 /* recommended action: do nothing, we don't have
4068 * Lenovo ATM information */
4069 return true;
67bcae6e 4070 case TP_HKEY_EV_ALARM_BAT_HOT:
0978e012 4071 pr_crit("THERMAL ALARM: battery is too hot!\n");
106b4e66 4072 /* recommended action: warn user through gui */
9ebd9e83 4073 break;
67bcae6e 4074 case TP_HKEY_EV_ALARM_BAT_XHOT:
0978e012 4075 pr_alert("THERMAL EMERGENCY: battery is extremely hot!\n");
106b4e66 4076 /* recommended action: immediate sleep/hibernate */
9ebd9e83 4077 break;
67bcae6e 4078 case TP_HKEY_EV_ALARM_SENSOR_HOT:
5cac62ac 4079 pr_crit("THERMAL ALARM: a sensor reports something is too hot!\n");
106b4e66
HMH		 4080 /* recommended action: warn user through gui, that */
4081 /* some internal component is too hot */
9ebd9e83 4082 break;
67bcae6e 4083 case TP_HKEY_EV_ALARM_SENSOR_XHOT:
5cac62ac 4084 pr_alert("THERMAL EMERGENCY: a sensor reports something is extremely hot!\n");
106b4e66 4085 /* recommended action: immediate sleep/hibernate */
9ebd9e83 4086 break;
6f62bc3e
RH		 4087 case TP_HKEY_EV_AC_CHANGED:
4088 /* X120e, X121e, X220, X220i, X220t, X230, T420, T420s, W520:
4089 * AC status changed; can be triggered by plugging or
4090 * unplugging AC adapter, docking or undocking. */
4091
df561f66 4092 fallthrough;
2d43f671
HMH		 4093
4094 case TP_HKEY_EV_KEY_NUMLOCK:
4095 case TP_HKEY_EV_KEY_FN:
4096 /* key press events, we just ignore them as long as the EC
4097 * is still reporting them in the normal keyboard stream */
4098 *send_acpi_ev = false;
4099 *ignore_acpi_ev = true;
4100 return true;
4101
12dde4d1 4102 case TP_HKEY_EV_KEY_FN_ESC:
49702bac 4103 /* Get the media key status to force the status LED to update */
12dde4d1
EVC		 4104 acpi_evalf(hkey_handle, NULL, "GMKS", "v");
4105 *send_acpi_ev = false;
4106 *ignore_acpi_ev = true;
4107 return true;
4108
b03f4d49
L		 4109 case TP_HKEY_EV_TABLET_CHANGED:
4110 tpacpi_input_send_tabletsw();
4111 hotkey_tablet_mode_notify_change();
4112 *send_acpi_ev = false;
edd1ed73 4113 return true;
b03f4d49 4114
587d8628
DH		 4115 case TP_HKEY_EV_PALM_DETECTED:
4116 case TP_HKEY_EV_PALM_UNDETECTED:
1ac09656
MP		 4117 /* palm detected - pass on to event handler */
4118 palmsensor_refresh();
587d8628
DH		 4119 return true;
4120
106b4e66 4121 default:
fd75ba2b
HMH		 4122 /* report simply as unknown, no sensor dump */
4123 return false;
106b4e66 4124 }
9ebd9e83
HMH		 4125
4126 thermal_dump_all_sensors();
fd75ba2b 4127 return true;
106b4e66
HMH		 4128}
4129
56b6aeb0
HMH		 4130static void hotkey_notify(struct ibm_struct *ibm, u32 event)
4131{
6a38abbf 4132 u32 hkey;
3827e7a3
HMH		 4133 bool send_acpi_ev;
4134 bool ignore_acpi_ev;
4135 bool known_ev;
3eea123d
HMH		 4136
4137 if (event != 0x80) {
0978e012 4138 pr_err("unknown HKEY notification event %d\n", event);
3eea123d 4139 /* forward it to userspace, maybe it knows how to handle it */
35ff8b9f
HMH		 4140 acpi_bus_generate_netlink_event(
4141 ibm->acpi->device->pnp.device_class,
e0b36fc5 4142 dev_name(&ibm->acpi->device->dev),
35ff8b9f 4143 event, 0);
3eea123d
HMH		 4144 return;
4145 }
4146
4147 while (1) {
4148 if (!acpi_evalf(hkey_handle, &hkey, "MHKP", "d")) {
0978e012 4149 pr_err("failed to retrieve HKEY event\n");
3eea123d
HMH		 4150 return;
4151 }
4152
4153 if (hkey == 0) {
4154 /* queue empty */
4155 return;
4156 }
4157
3827e7a3
HMH		 4158 send_acpi_ev = true;
4159 ignore_acpi_ev = false;
56b6aeb0 4160
ff80f137
HMH		 4161 switch (hkey >> 12) {
4162 case 1:
4163 /* 0x1000-0x1FFF: key presses */
3827e7a3
HMH		 4164 known_ev = hotkey_notify_hotkey(hkey, &send_acpi_ev,
4165 &ignore_acpi_ev);
ff80f137 4166 break;
a713b4d7 4167 case 2:
3827e7a3
HMH		 4168 /* 0x2000-0x2FFF: Wakeup reason */
4169 known_ev = hotkey_notify_wakeup(hkey, &send_acpi_ev,
4170 &ignore_acpi_ev);
a713b4d7
HMH		 4171 break;
4172 case 3:
3827e7a3 4173 /* 0x3000-0x3FFF: bay-related wakeups */
bf8b29c8
HMH		 4174 switch (hkey) {
4175 case TP_HKEY_EV_BAYEJ_ACK:
a713b4d7 4176 hotkey_autosleep_ack = 1;
0978e012 4177 pr_info("bay ejected\n");
50ebec09 4178 hotkey_wakeup_hotunplug_complete_notify_change();
3827e7a3 4179 known_ev = true;
bf8b29c8
HMH		 4180 break;
4181 case TP_HKEY_EV_OPTDRV_EJ:
4182 /* FIXME: kick libata if SATA link offline */
4183 known_ev = true;
4184 break;
4185 default:
3827e7a3 4186 known_ev = false;
a713b4d7
HMH		 4187 }
4188 break;
4189 case 4:
a50245af
HMH		 4190 /* 0x4000-0x4FFF: dock-related events */
4191 known_ev = hotkey_notify_dockevent(hkey, &send_acpi_ev,
4192 &ignore_acpi_ev);
a713b4d7 4193 break;
ff80f137 4194 case 5:
d1edb2b5 4195 /* 0x5000-0x5FFF: human interface helpers */
3827e7a3
HMH		 4196 known_ev = hotkey_notify_usrevent(hkey, &send_acpi_ev,
4197 &ignore_acpi_ev);
ff80f137 4198 break;
106b4e66 4199 case 6:
2d43f671
HMH		 4200 /* 0x6000-0x6FFF: thermal alarms/notices and
4201 * keyboard events */
4202 known_ev = hotkey_notify_6xxx(hkey, &send_acpi_ev,
106b4e66
HMH		 4203 &ignore_acpi_ev);
4204 break;
ff80f137
HMH		 4205 case 7:
4206 /* 0x7000-0x7FFF: misc */
67bcae6e
HMH		 4207 if (tp_features.hotkey_wlsw &&
4208 hkey == TP_HKEY_EV_RFKILL_CHANGED) {
733e27c1 4209 tpacpi_send_radiosw_update();
3b64b51d 4210 send_acpi_ev = 0;
3827e7a3 4211 known_ev = true;
6a38abbf 4212 break;
6a38abbf 4213 }
df561f66 4214 fallthrough; /* to default */
ff80f137 4215 default:
3827e7a3 4216 known_ev = false;
3b64b51d 4217 }
3827e7a3 4218 if (!known_ev) {
0978e012 4219 pr_notice("unhandled HKEY event 0x%04x\n", hkey);
5cac62ac
AS		 4220 pr_notice("please report the conditions when this event happened to %s\n",
4221 TPACPI_MAIL);
6a38abbf 4222 }
ff80f137 4223
3eea123d 4224 /* netlink events */
3e5ce914 4225 if (!ignore_acpi_ev && send_acpi_ev) {
35ff8b9f
HMH		 4226 acpi_bus_generate_netlink_event(
4227 ibm->acpi->device->pnp.device_class,
e0b36fc5 4228 dev_name(&ibm->acpi->device->dev),
35ff8b9f 4229 event, hkey);
3eea123d 4230 }
56b6aeb0
HMH		 4231 }
4232}
4233
fd3c3a42 4234static void hotkey_suspend(void)
a713b4d7
HMH		 4235{
4236 /* Do these on suspend, we get the events on early resume! */
4237 hotkey_wakeup_reason = TP_ACPI_WAKEUP_NONE;
4238 hotkey_autosleep_ack = 0;
330947b8
SS		 4239
4240 /* save previous mode of adaptive keyboard of X1 Carbon */
f23a5bcb
BN		 4241 if (tp_features.has_adaptive_kbd) {
4242 if (!acpi_evalf(hkey_handle, &adaptive_keyboard_prev_mode,
4243 "GTRW", "dd", 0)) {
4244 pr_err("Cannot read adaptive keyboard mode.\n");
330947b8
SS		 4245 }
4246 }
a713b4d7
HMH		 4247}
4248
5c29d58f
HMH		 4249static void hotkey_resume(void)
4250{
d64c81c4
HMH		 4251 tpacpi_disable_brightness_delay();
4252
0d922e3b
HMH		 4253 if (hotkey_status_set(true) < 0 ||
4254 hotkey_mask_set(hotkey_acpi_mask) < 0)
5cac62ac 4255 pr_err("error while attempting to reset the event firmware interface\n");
0d922e3b 4256
733e27c1 4257 tpacpi_send_radiosw_update();
96adb419 4258 tpacpi_input_send_tabletsw();
6c231bd5 4259 hotkey_tablet_mode_notify_change();
50ebec09
HMH		 4260 hotkey_wakeup_reason_notify_change();
4261 hotkey_wakeup_hotunplug_complete_notify_change();
db25f16d 4262 hotkey_poll_setup_safe(false);
330947b8
SS		 4263
4264 /* restore previous mode of adapive keyboard of X1 Carbon */
f23a5bcb
BN		 4265 if (tp_features.has_adaptive_kbd) {
4266 if (!acpi_evalf(hkey_handle, NULL, "STRW", "vd",
4267 adaptive_keyboard_prev_mode)) {
4268 pr_err("Cannot set adaptive keyboard mode.\n");
330947b8
SS		 4269 }
4270 }
5c29d58f
HMH		 4271}
4272
a0416420 4273/* procfs -------------------------------------------------------------- */
887965e6 4274static int hotkey_read(struct seq_file *m)
1da177e4 4275{
ae92bd17 4276 int res, status;
1da177e4 4277
d8fd94d9 4278 if (!tp_features.hotkey) {
887965e6
AD		 4279 seq_printf(m, "status:\t\tnot supported\n");
4280 return 0;
78f81cc4
BD		 4281 }
4282
7646ea88 4283 if (mutex_lock_killable(&hotkey_mutex))
fc589a3c 4284 return -ERESTARTSYS;
b2c985e7
HMH		 4285 res = hotkey_status_get(&status);
4286 if (!res)
4287 res = hotkey_mask_get();
40ca9fdf 4288 mutex_unlock(&hotkey_mutex);
b86c4722
HMH		 4289 if (res)
4290 return res;
1da177e4 4291
887965e6 4292 seq_printf(m, "status:\t\t%s\n", enabled(status, 0));
0d922e3b 4293 if (hotkey_all_mask) {
887965e6
AD		 4294 seq_printf(m, "mask:\t\t0x%08x\n", hotkey_user_mask);
4295 seq_printf(m, "commands:\tenable, disable, reset, <mask>\n");
1da177e4 4296 } else {
887965e6
AD		 4297 seq_printf(m, "mask:\t\tnot supported\n");
4298 seq_printf(m, "commands:\tenable, disable, reset\n");
1da177e4
LT		 4299 }
4300
887965e6 4301 return 0;
1da177e4
LT		 4302}
4303
406e988b 4304static void hotkey_enabledisable_warn(bool enable)
2586d566
HMH		 4305{
4306 tpacpi_log_usertask("procfs hotkey enable/disable");
406e988b 4307 if (!WARN((tpacpi_lifecycle == TPACPI_LIFE_RUNNING || !enable),
5cac62ac
AS		 4308 pr_fmt("hotkey enable/disable functionality has been removed from the driver. Hotkeys are always enabled.\n")))
4309 pr_err("Please remove the hotkey=enable module parameter, it is deprecated. Hotkeys are always enabled.\n");
2586d566
HMH		 4310}
4311
78f81cc4 4312static int hotkey_write(char *buf)
1da177e4 4313{
2586d566 4314 int res;
ae92bd17 4315 u32 mask;
1da177e4 4316 char *cmd;
1da177e4 4317
d8fd94d9 4318 if (!tp_features.hotkey)
1da177e4
LT		 4319 return -ENODEV;
4320
7646ea88 4321 if (mutex_lock_killable(&hotkey_mutex))
fc589a3c 4322 return -ERESTARTSYS;
40ca9fdf 4323
0d922e3b 4324 mask = hotkey_user_mask;
78f81cc4 4325
40ca9fdf 4326 res = 0;
be51bd45 4327 while ((cmd = strsep(&buf, ","))) {
1da177e4 4328 if (strlencmp(cmd, "enable") == 0) {
406e988b 4329 hotkey_enabledisable_warn(1);
1da177e4 4330 } else if (strlencmp(cmd, "disable") == 0) {
406e988b 4331 hotkey_enabledisable_warn(0);
2586d566 4332 res = -EPERM;
1da177e4 4333 } else if (strlencmp(cmd, "reset") == 0) {
20c9aa46
HMH		 4334 mask = (hotkey_all_mask | hotkey_source_mask)
4335 & ~hotkey_reserved_mask;
1da177e4
LT		 4336 } else if (sscanf(cmd, "0x%x", &mask) == 1) {
4337 /* mask set */
4338 } else if (sscanf(cmd, "%x", &mask) == 1) {
4339 /* mask set */
40ca9fdf
HMH		 4340 } else {
4341 res = -EINVAL;
4342 goto errexit;
4343 }
1da177e4 4344 }
56e2c200 4345
0d922e3b 4346 if (!res) {
56e2c200
HMH		 4347 tpacpi_disclose_usertask("procfs hotkey",
4348 "set mask to 0x%08x\n", mask);
0d922e3b
HMH		 4349 res = hotkey_user_mask_set(mask);
4350 }
1da177e4 4351
40ca9fdf
HMH		 4352errexit:
4353 mutex_unlock(&hotkey_mutex);
4354 return res;
78f81cc4 4355}
1da177e4 4356
1ba90e3a 4357static const struct acpi_device_id ibm_htk_device_ids[] = {
9fbdaeb4
MI		 4358 {TPACPI_ACPI_IBM_HKEY_HID, 0},
4359 {TPACPI_ACPI_LENOVO_HKEY_HID, 0},
a3c42a46 4360 {TPACPI_ACPI_LENOVO_HKEY_V2_HID, 0},
1ba90e3a
TR		 4361 {"", 0},
4362};
4363
8d376cd6 4364static struct tp_acpi_drv_struct ibm_hotkey_acpidriver = {
1ba90e3a 4365 .hid = ibm_htk_device_ids,
8d376cd6
HMH		 4366 .notify = hotkey_notify,
4367 .handle = &hkey_handle,
4368 .type = ACPI_DEVICE_NOTIFY,
4369};
4370
a5763f22
HMH		 4371static struct ibm_struct hotkey_driver_data = {
4372 .name = "hotkey",
a5763f22
HMH		 4373 .read = hotkey_read,
4374 .write = hotkey_write,
4375 .exit = hotkey_exit,
5c29d58f 4376 .resume = hotkey_resume,
a713b4d7 4377 .suspend = hotkey_suspend,
8d376cd6 4378 .acpi = &ibm_hotkey_acpidriver,
a5763f22
HMH		 4379};
4380
56b6aeb0
HMH		 4381/*************************************************************************
4382 * Bluetooth subdriver
4383 */
1da177e4 4384
f74a27d4
HMH		 4385enum {
4386 /* ACPI GBDC/SBDC bits */
4387 TP_ACPI_BLUETOOTH_HWPRESENT = 0x01, /* Bluetooth hw available */
4388 TP_ACPI_BLUETOOTH_RADIOSSW = 0x02, /* Bluetooth radio enabled */
153f8220 4389 TP_ACPI_BLUETOOTH_RESUMECTRL = 0x04, /* Bluetooth state at resume:
08fedfc9 4390 0 = disable, 1 = enable */
153f8220
HMH		 4391};
4392
4393enum {
4394 /* ACPI \BLTH commands */
4395 TP_ACPI_BLTH_GET_ULTRAPORT_ID = 0x00, /* Get Ultraport BT ID */
4396 TP_ACPI_BLTH_GET_PWR_ON_RESUME = 0x01, /* Get power-on-resume state */
4397 TP_ACPI_BLTH_PWR_ON_ON_RESUME = 0x02, /* Resume powered on */
4398 TP_ACPI_BLTH_PWR_OFF_ON_RESUME = 0x03, /* Resume powered off */
4399 TP_ACPI_BLTH_SAVE_STATE = 0x05, /* Save state for S4/S5 */
f74a27d4
HMH		 4400};
4401
bee4cd9b
HMH		 4402#define TPACPI_RFK_BLUETOOTH_SW_NAME "tpacpi_bluetooth_sw"
4403
19d337df 4404static int bluetooth_get_status(void)
07431ec8
HMH		 4405{
4406 int status;
4407
a73f3091
HMH		 4408#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
4409 if (dbg_bluetoothemul)
4410 return (tpacpi_bluetooth_emulstate) ?
19d337df 4411 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF;
a73f3091
HMH		 4412#endif
4413
07431ec8
HMH		 4414 if (!acpi_evalf(hkey_handle, &status, "GBDC", "d"))
4415 return -EIO;
4416
0e74dc26 4417 return ((status & TP_ACPI_BLUETOOTH_RADIOSSW) != 0) ?
19d337df 4418 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF;
07431ec8
HMH		 4419}
4420
19d337df 4421static int bluetooth_set_status(enum tpacpi_rfkill_state state)
0e74dc26
HMH		 4422{
4423 int status;
4424
bee4cd9b 4425 vdbg_printk(TPACPI_DBG_RFKILL,
19d337df
JB		 4426 "will attempt to %s bluetooth\n",
4427 (state == TPACPI_RFK_RADIO_ON) ? "enable" : "disable");
bee4cd9b 4428
a73f3091
HMH		 4429#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
4430 if (dbg_bluetoothemul) {
19d337df 4431 tpacpi_bluetooth_emulstate = (state == TPACPI_RFK_RADIO_ON);
a73f3091
HMH		 4432 return 0;
4433 }
4434#endif
4435
19d337df 4436 if (state == TPACPI_RFK_RADIO_ON)
08fedfc9
HMH		 4437 status = TP_ACPI_BLUETOOTH_RADIOSSW
4438 | TP_ACPI_BLUETOOTH_RESUMECTRL;
4439 else
4440 status = 0;
19d337df 4441
07431ec8
HMH		 4442 if (!acpi_evalf(hkey_handle, NULL, "SBDC", "vd", status))
4443 return -EIO;
4444
4445 return 0;
4446}
f74a27d4 4447
d3a6ade4
HMH		 4448/* sysfs bluetooth enable ---------------------------------------------- */
4449static ssize_t bluetooth_enable_show(struct device *dev,
4450 struct device_attribute *attr,
4451 char *buf)
4452{
19d337df
JB		 4453 return tpacpi_rfk_sysfs_enable_show(TPACPI_RFK_BLUETOOTH_SW_ID,
4454 attr, buf);
d3a6ade4
HMH		 4455}
4456
4457static ssize_t bluetooth_enable_store(struct device *dev,
4458 struct device_attribute *attr,
4459 const char *buf, size_t count)
4460{
19d337df
JB		 4461 return tpacpi_rfk_sysfs_enable_store(TPACPI_RFK_BLUETOOTH_SW_ID,
4462 attr, buf, count);
d3a6ade4
HMH		 4463}
4464
b4dd04ac 4465static DEVICE_ATTR_RW(bluetooth_enable);
d3a6ade4
HMH		 4466
4467/* --------------------------------------------------------------------- */
4468
4469static struct attribute *bluetooth_attributes[] = {
4470 &dev_attr_bluetooth_enable.attr,
4471 NULL
4472};
4473
4474static const struct attribute_group bluetooth_attr_group = {
d3a6ade4
HMH		 4475 .attrs = bluetooth_attributes,
4476};
4477
19d337df
JB		 4478static const struct tpacpi_rfk_ops bluetooth_tprfk_ops = {
4479 .get_status = bluetooth_get_status,
4480 .set_status = bluetooth_set_status,
4481};
0e74dc26 4482
90d9d3c7
HMH		 4483static void bluetooth_shutdown(void)
4484{
4485 /* Order firmware to save current state to NVRAM */
4486 if (!acpi_evalf(NULL, NULL, "\\BLTH", "vd",
4487 TP_ACPI_BLTH_SAVE_STATE))
0978e012 4488 pr_notice("failed to save bluetooth state to NVRAM\n");
bee4cd9b
HMH		 4489 else
4490 vdbg_printk(TPACPI_DBG_RFKILL,
1f01358c 4491 "bluetooth state saved to NVRAM\n");
90d9d3c7
HMH		 4492}
4493
07431ec8
HMH		 4494static void bluetooth_exit(void)
4495{
4496 sysfs_remove_group(&tpacpi_pdev->dev.kobj,
4497 &bluetooth_attr_group);
19d337df
JB		 4498
4499 tpacpi_destroy_rfkill(TPACPI_RFK_BLUETOOTH_SW_ID);
4500
4501 bluetooth_shutdown();
07431ec8
HMH		 4502}
4503
f7db839f
JY		 4504static const struct dmi_system_id bt_fwbug_list[] __initconst = {
4505 {
4506 .ident = "ThinkPad E485",
4507 .matches = {
4508 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
4509 DMI_MATCH(DMI_BOARD_NAME, "20KU"),
4510 },
4511 },
4512 {
4513 .ident = "ThinkPad E585",
4514 .matches = {
4515 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
4516 DMI_MATCH(DMI_BOARD_NAME, "20KV"),
4517 },
4518 },
4519 {
4520 .ident = "ThinkPad A285 - 20MW",
4521 .matches = {
4522 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
4523 DMI_MATCH(DMI_BOARD_NAME, "20MW"),
4524 },
4525 },
4526 {
4527 .ident = "ThinkPad A285 - 20MX",
4528 .matches = {
4529 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
4530 DMI_MATCH(DMI_BOARD_NAME, "20MX"),
4531 },
4532 },
4533 {
4534 .ident = "ThinkPad A485 - 20MU",
4535 .matches = {
4536 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
4537 DMI_MATCH(DMI_BOARD_NAME, "20MU"),
4538 },
4539 },
4540 {
4541 .ident = "ThinkPad A485 - 20MV",
4542 .matches = {
4543 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
4544 DMI_MATCH(DMI_BOARD_NAME, "20MV"),
4545 },
4546 },
4547 {}
4548};
4549
4550static const struct pci_device_id fwbug_cards_ids[] __initconst = {
4551 { PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x24F3) },
4552 { PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x24FD) },
4553 { PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x2526) },
4554 {}
4555};
4556
4557
4558static int __init have_bt_fwbug(void)
4559{
4560 /*
4561 * Some AMD based ThinkPads have a firmware bug that calling
4562 * "GBDC" will cause bluetooth on Intel wireless cards blocked
4563 */
4564 if (dmi_check_system(bt_fwbug_list) && pci_dev_present(fwbug_cards_ids)) {
4565 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL,
4566 FW_BUG "disable bluetooth subdriver for Intel cards\n");
4567 return 1;
4568 } else
4569 return 0;
4570}
4571
a5763f22 4572static int __init bluetooth_init(struct ibm_init_struct *iibm)
1da177e4 4573{
d3a6ade4 4574 int res;
d6fdd1e9
HMH		 4575 int status = 0;
4576
bee4cd9b
HMH		 4577 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL,
4578 "initializing bluetooth subdriver\n");
fe08bc4b 4579
e0c7dfe7 4580 TPACPI_ACPIHANDLE_INIT(hkey);
5fba344c 4581
78f81cc4
BD		 4582 /* bluetooth not supported on 570, 600e/x, 770e, 770x, A21e, A2xm/p,
4583 G4x, R30, R31, R40e, R50e, T20-22, X20-21 */
f7db839f 4584 tp_features.bluetooth = !have_bt_fwbug() && hkey_handle &&
d6fdd1e9
HMH		 4585 acpi_evalf(hkey_handle, &status, "GBDC", "qd");
4586
bee4cd9b
HMH		 4587 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL,
4588 "bluetooth is %s, status 0x%02x\n",
d6fdd1e9
HMH		 4589 str_supported(tp_features.bluetooth),
4590 status);
4591
a73f3091
HMH		 4592#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
4593 if (dbg_bluetoothemul) {
4594 tp_features.bluetooth = 1;
0978e012 4595 pr_info("bluetooth switch emulation enabled\n");
a73f3091
HMH		 4596 } else
4597#endif
3a872080
HMH		 4598 if (tp_features.bluetooth &&
4599 !(status & TP_ACPI_BLUETOOTH_HWPRESENT)) {
4600 /* no bluetooth hardware present in system */
4601 tp_features.bluetooth = 0;
bee4cd9b 4602 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL,
3a872080
HMH		 4603 "bluetooth hardware not installed\n");
4604 }
4605
0e74dc26
HMH		 4606 if (!tp_features.bluetooth)
4607 return 1;
4608
0e74dc26 4609 res = tpacpi_new_rfkill(TPACPI_RFK_BLUETOOTH_SW_ID,
19d337df 4610 &bluetooth_tprfk_ops,
0e74dc26 4611 RFKILL_TYPE_BLUETOOTH,
bee4cd9b 4612 TPACPI_RFK_BLUETOOTH_SW_NAME,
19d337df
JB		 4613 true);
4614 if (res)
4615 return res;
4616
4617 res = sysfs_create_group(&tpacpi_pdev->dev.kobj,
4618 &bluetooth_attr_group);
0e74dc26 4619 if (res) {
19d337df 4620 tpacpi_destroy_rfkill(TPACPI_RFK_BLUETOOTH_SW_ID);
0e74dc26 4621 return res;
d6fdd1e9 4622 }
fe08bc4b 4623
0e74dc26 4624 return 0;
1da177e4
LT		 4625}
4626
d3a6ade4 4627/* procfs -------------------------------------------------------------- */
887965e6 4628static int bluetooth_read(struct seq_file *m)
1da177e4 4629{
887965e6 4630 return tpacpi_rfk_procfs_read(TPACPI_RFK_BLUETOOTH_SW_ID, m);
1da177e4
LT		 4631}
4632
78f81cc4 4633static int bluetooth_write(char *buf)
1da177e4 4634{
19d337df 4635 return tpacpi_rfk_procfs_write(TPACPI_RFK_BLUETOOTH_SW_ID, buf);
1da177e4
LT		 4636}
4637
a5763f22
HMH		 4638static struct ibm_struct bluetooth_driver_data = {
4639 .name = "bluetooth",
4640 .read = bluetooth_read,
4641 .write = bluetooth_write,
d3a6ade4 4642 .exit = bluetooth_exit,
90d9d3c7 4643 .shutdown = bluetooth_shutdown,
a5763f22
HMH		 4644};
4645
56b6aeb0
HMH		 4646/*************************************************************************
4647 * Wan subdriver
4648 */
4649
f74a27d4
HMH		 4650enum {
4651 /* ACPI GWAN/SWAN bits */
4652 TP_ACPI_WANCARD_HWPRESENT = 0x01, /* Wan hw available */
4653 TP_ACPI_WANCARD_RADIOSSW = 0x02, /* Wan radio enabled */
153f8220 4654 TP_ACPI_WANCARD_RESUMECTRL = 0x04, /* Wan state at resume:
08fedfc9 4655 0 = disable, 1 = enable */
f74a27d4
HMH		 4656};
4657
bee4cd9b
HMH		 4658#define TPACPI_RFK_WWAN_SW_NAME "tpacpi_wwan_sw"
4659
19d337df 4660static int wan_get_status(void)
07431ec8
HMH		 4661{
4662 int status;
4663
a73f3091
HMH		 4664#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
4665 if (dbg_wwanemul)
4666 return (tpacpi_wwan_emulstate) ?
19d337df 4667 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF;
a73f3091
HMH		 4668#endif
4669
07431ec8
HMH		 4670 if (!acpi_evalf(hkey_handle, &status, "GWAN", "d"))
4671 return -EIO;
4672
0e74dc26 4673 return ((status & TP_ACPI_WANCARD_RADIOSSW) != 0) ?
19d337df 4674 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF;
0e74dc26
HMH		 4675}
4676
19d337df 4677static int wan_set_status(enum tpacpi_rfkill_state state)
07431ec8
HMH		 4678{
4679 int status;
4680
bee4cd9b 4681 vdbg_printk(TPACPI_DBG_RFKILL,
19d337df
JB		 4682 "will attempt to %s wwan\n",
4683 (state == TPACPI_RFK_RADIO_ON) ? "enable" : "disable");
bee4cd9b 4684
a73f3091
HMH		 4685#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
4686 if (dbg_wwanemul) {
19d337df 4687 tpacpi_wwan_emulstate = (state == TPACPI_RFK_RADIO_ON);
a73f3091
HMH		 4688 return 0;
4689 }
4690#endif
4691
19d337df 4692 if (state == TPACPI_RFK_RADIO_ON)
08fedfc9
HMH		 4693 status = TP_ACPI_WANCARD_RADIOSSW
4694 | TP_ACPI_WANCARD_RESUMECTRL;
4695 else
4696 status = 0;
19d337df 4697
07431ec8
HMH		 4698 if (!acpi_evalf(hkey_handle, NULL, "SWAN", "vd", status))
4699 return -EIO;
4700
4701 return 0;
4702}
f74a27d4 4703
d3a6ade4
HMH		 4704/* sysfs wan enable ---------------------------------------------------- */
4705static ssize_t wan_enable_show(struct device *dev,
4706 struct device_attribute *attr,
4707 char *buf)
4708{
19d337df
JB		 4709 return tpacpi_rfk_sysfs_enable_show(TPACPI_RFK_WWAN_SW_ID,
4710 attr, buf);
d3a6ade4
HMH		 4711}
4712
4713static ssize_t wan_enable_store(struct device *dev,
4714 struct device_attribute *attr,
4715 const char *buf, size_t count)
4716{
19d337df
JB		 4717 return tpacpi_rfk_sysfs_enable_store(TPACPI_RFK_WWAN_SW_ID,
4718 attr, buf, count);
d3a6ade4
HMH		 4719}
4720
5fb73bc2
BM		 4721static DEVICE_ATTR(wwan_enable, S_IWUSR | S_IRUGO,
4722 wan_enable_show, wan_enable_store);
d3a6ade4
HMH		 4723
4724/* --------------------------------------------------------------------- */
4725
4726static struct attribute *wan_attributes[] = {
5fb73bc2 4727 &dev_attr_wwan_enable.attr,
d3a6ade4
HMH		 4728 NULL
4729};
4730
4731static const struct attribute_group wan_attr_group = {
d3a6ade4
HMH		 4732 .attrs = wan_attributes,
4733};
4734
19d337df
JB		 4735static const struct tpacpi_rfk_ops wan_tprfk_ops = {
4736 .get_status = wan_get_status,
4737 .set_status = wan_set_status,
4738};
0e74dc26 4739
90d9d3c7
HMH		 4740static void wan_shutdown(void)
4741{
4742 /* Order firmware to save current state to NVRAM */
4743 if (!acpi_evalf(NULL, NULL, "\\WGSV", "vd",
4744 TP_ACPI_WGSV_SAVE_STATE))
0978e012 4745 pr_notice("failed to save WWAN state to NVRAM\n");
bee4cd9b
HMH		 4746 else
4747 vdbg_printk(TPACPI_DBG_RFKILL,
4748 "WWAN state saved to NVRAM\n");
90d9d3c7
HMH		 4749}
4750
07431ec8
HMH		 4751static void wan_exit(void)
4752{
4753 sysfs_remove_group(&tpacpi_pdev->dev.kobj,
4754 &wan_attr_group);
19d337df
JB		 4755
4756 tpacpi_destroy_rfkill(TPACPI_RFK_WWAN_SW_ID);
4757
4758 wan_shutdown();
07431ec8
HMH		 4759}
4760
a5763f22 4761static int __init wan_init(struct ibm_init_struct *iibm)
42adb53c 4762{
d3a6ade4 4763 int res;
d6fdd1e9
HMH		 4764 int status = 0;
4765
bee4cd9b
HMH		 4766 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL,
4767 "initializing wan subdriver\n");
fe08bc4b 4768
e0c7dfe7 4769 TPACPI_ACPIHANDLE_INIT(hkey);
5fba344c 4770
d8fd94d9 4771 tp_features.wan = hkey_handle &&
d6fdd1e9
HMH		 4772 acpi_evalf(hkey_handle, &status, "GWAN", "qd");
4773
bee4cd9b
HMH		 4774 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL,
4775 "wan is %s, status 0x%02x\n",
d6fdd1e9
HMH		 4776 str_supported(tp_features.wan),
4777 status);
4778
a73f3091
HMH		 4779#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
4780 if (dbg_wwanemul) {
4781 tp_features.wan = 1;
0978e012 4782 pr_info("wwan switch emulation enabled\n");
a73f3091
HMH		 4783 } else
4784#endif
3a872080
HMH		 4785 if (tp_features.wan &&
4786 !(status & TP_ACPI_WANCARD_HWPRESENT)) {
4787 /* no wan hardware present in system */
4788 tp_features.wan = 0;
bee4cd9b 4789 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL,
3a872080
HMH		 4790 "wan hardware not installed\n");
4791 }
4792
0e74dc26
HMH		 4793 if (!tp_features.wan)
4794 return 1;
4795
0e74dc26 4796 res = tpacpi_new_rfkill(TPACPI_RFK_WWAN_SW_ID,
19d337df 4797 &wan_tprfk_ops,
0e74dc26 4798 RFKILL_TYPE_WWAN,
bee4cd9b 4799 TPACPI_RFK_WWAN_SW_NAME,
19d337df
JB		 4800 true);
4801 if (res)
4802 return res;
4803
4804 res = sysfs_create_group(&tpacpi_pdev->dev.kobj,
4805 &wan_attr_group);
4806
0e74dc26 4807 if (res) {
19d337df 4808 tpacpi_destroy_rfkill(TPACPI_RFK_WWAN_SW_ID);
0e74dc26 4809 return res;
d6fdd1e9 4810 }
fe08bc4b 4811
0e74dc26 4812 return 0;
42adb53c
JF		 4813}
4814
d3a6ade4 4815/* procfs -------------------------------------------------------------- */
887965e6 4816static int wan_read(struct seq_file *m)
42adb53c 4817{
887965e6 4818 return tpacpi_rfk_procfs_read(TPACPI_RFK_WWAN_SW_ID, m);
42adb53c
JF		 4819}
4820
4821static int wan_write(char *buf)
4822{
19d337df 4823 return tpacpi_rfk_procfs_write(TPACPI_RFK_WWAN_SW_ID, buf);
42adb53c
JF		 4824}
4825
a5763f22
HMH		 4826static struct ibm_struct wan_driver_data = {
4827 .name = "wan",
4828 .read = wan_read,
4829 .write = wan_write,
d3a6ade4 4830 .exit = wan_exit,
90d9d3c7 4831 .shutdown = wan_shutdown,
a5763f22
HMH		 4832};
4833
0045c0aa
HMH		 4834/*************************************************************************
4835 * UWB subdriver
4836 */
4837
4838enum {
4839 /* ACPI GUWB/SUWB bits */
4840 TP_ACPI_UWB_HWPRESENT = 0x01, /* UWB hw available */
4841 TP_ACPI_UWB_RADIOSSW = 0x02, /* UWB radio enabled */
4842};
4843
bee4cd9b
HMH		 4844#define TPACPI_RFK_UWB_SW_NAME "tpacpi_uwb_sw"
4845
19d337df 4846static int uwb_get_status(void)
0045c0aa
HMH		 4847{
4848 int status;
4849
0045c0aa
HMH		 4850#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
4851 if (dbg_uwbemul)
4852 return (tpacpi_uwb_emulstate) ?
19d337df 4853 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF;
0045c0aa
HMH		 4854#endif
4855
4856 if (!acpi_evalf(hkey_handle, &status, "GUWB", "d"))
4857 return -EIO;
4858
4859 return ((status & TP_ACPI_UWB_RADIOSSW) != 0) ?
19d337df 4860 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF;
0045c0aa
HMH		 4861}
4862
19d337df 4863static int uwb_set_status(enum tpacpi_rfkill_state state)
0045c0aa
HMH		 4864{
4865 int status;
4866
bee4cd9b 4867 vdbg_printk(TPACPI_DBG_RFKILL,
19d337df
JB		 4868 "will attempt to %s UWB\n",
4869 (state == TPACPI_RFK_RADIO_ON) ? "enable" : "disable");
bee4cd9b 4870
0045c0aa
HMH		 4871#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
4872 if (dbg_uwbemul) {
19d337df 4873 tpacpi_uwb_emulstate = (state == TPACPI_RFK_RADIO_ON);
0045c0aa
HMH		 4874 return 0;
4875 }
4876#endif
4877
19d337df
JB		 4878 if (state == TPACPI_RFK_RADIO_ON)
4879 status = TP_ACPI_UWB_RADIOSSW;
4880 else
4881 status = 0;
4882
0045c0aa
HMH		 4883 if (!acpi_evalf(hkey_handle, NULL, "SUWB", "vd", status))
4884 return -EIO;
4885
0045c0aa
HMH		 4886 return 0;
4887}
4888
4889/* --------------------------------------------------------------------- */
4890
19d337df
JB		 4891static const struct tpacpi_rfk_ops uwb_tprfk_ops = {
4892 .get_status = uwb_get_status,
4893 .set_status = uwb_set_status,
4894};
0045c0aa
HMH		 4895
4896static void uwb_exit(void)
4897{
19d337df 4898 tpacpi_destroy_rfkill(TPACPI_RFK_UWB_SW_ID);
0045c0aa
HMH		 4899}
4900
4901static int __init uwb_init(struct ibm_init_struct *iibm)
4902{
4903 int res;
4904 int status = 0;
4905
bee4cd9b
HMH		 4906 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL,
4907 "initializing uwb subdriver\n");
0045c0aa
HMH		 4908
4909 TPACPI_ACPIHANDLE_INIT(hkey);
4910
4911 tp_features.uwb = hkey_handle &&
4912 acpi_evalf(hkey_handle, &status, "GUWB", "qd");
4913
bee4cd9b
HMH		 4914 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL,
4915 "uwb is %s, status 0x%02x\n",
0045c0aa
HMH		 4916 str_supported(tp_features.uwb),
4917 status);
4918
4919#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
4920 if (dbg_uwbemul) {
4921 tp_features.uwb = 1;
0978e012 4922 pr_info("uwb switch emulation enabled\n");
0045c0aa
HMH		 4923 } else
4924#endif
4925 if (tp_features.uwb &&
4926 !(status & TP_ACPI_UWB_HWPRESENT)) {
4927 /* no uwb hardware present in system */
4928 tp_features.uwb = 0;
4929 dbg_printk(TPACPI_DBG_INIT,
4930 "uwb hardware not installed\n");
4931 }
4932
4933 if (!tp_features.uwb)
4934 return 1;
4935
4936 res = tpacpi_new_rfkill(TPACPI_RFK_UWB_SW_ID,
19d337df 4937 &uwb_tprfk_ops,
0045c0aa 4938 RFKILL_TYPE_UWB,
bee4cd9b 4939 TPACPI_RFK_UWB_SW_NAME,
19d337df 4940 false);
0045c0aa
HMH		 4941 return res;
4942}
4943
4944static struct ibm_struct uwb_driver_data = {
4945 .name = "uwb",
4946 .exit = uwb_exit,
4947 .flags.experimental = 1,
4948};
4949
56b6aeb0
HMH		 4950/*************************************************************************
4951 * Video subdriver
4952 */
4953
d7c1d17d
HMH		 4954#ifdef CONFIG_THINKPAD_ACPI_VIDEO
4955
f74a27d4
HMH		 4956enum video_access_mode {
4957 TPACPI_VIDEO_NONE = 0,
4958 TPACPI_VIDEO_570, /* 570 */
4959 TPACPI_VIDEO_770, /* 600e/x, 770e, 770x */
4960 TPACPI_VIDEO_NEW, /* all others */
4961};
4962
4963enum { /* video status flags, based on VIDEO_570 */
4964 TP_ACPI_VIDEO_S_LCD = 0x01, /* LCD output enabled */
4965 TP_ACPI_VIDEO_S_CRT = 0x02, /* CRT output enabled */
4966 TP_ACPI_VIDEO_S_DVI = 0x08, /* DVI output enabled */
4967};
4968
4969enum { /* TPACPI_VIDEO_570 constants */
4970 TP_ACPI_VIDEO_570_PHSCMD = 0x87, /* unknown magic constant :( */
4971 TP_ACPI_VIDEO_570_PHSMASK = 0x03, /* PHS bits that map to
4972 * video_status_flags */
4973 TP_ACPI_VIDEO_570_PHS2CMD = 0x8b, /* unknown magic constant :( */
4974 TP_ACPI_VIDEO_570_PHS2SET = 0x80, /* unknown magic constant :( */
4975};
4976
9a8e1738
HMH		 4977static enum video_access_mode video_supported;
4978static int video_orig_autosw;
78f81cc4 4979
f74a27d4
HMH		 4980static int video_autosw_get(void);
4981static int video_autosw_set(int enable);
4982
112a6ee0
JP		 4983TPACPI_HANDLE(vid, root,
4984 "\\_SB.PCI.AGP.VGA", /* 570 */
4985 "\\_SB.PCI0.AGP0.VID0", /* 600e/x, 770x */
4986 "\\_SB.PCI0.VID0", /* 770e */
4987 "\\_SB.PCI0.VID", /* A21e, G4x, R50e, X30, X40 */
4988 "\\_SB.PCI0.AGP.VGA", /* X100e and a few others */
4989 "\\_SB.PCI0.AGP.VID", /* all others */
4990 ); /* R30, R31 */
4991
e0c7dfe7 4992TPACPI_HANDLE(vid2, root, "\\_SB.PCI0.AGPB.VID"); /* G41 */
56b6aeb0 4993
a5763f22 4994static int __init video_init(struct ibm_init_struct *iibm)
1da177e4 4995{
78f81cc4
BD		 4996 int ivga;
4997
fe08bc4b
HMH		 4998 vdbg_printk(TPACPI_DBG_INIT, "initializing video subdriver\n");
4999
e0c7dfe7 5000 TPACPI_ACPIHANDLE_INIT(vid);
e28393c0
HMH		 5001 if (tpacpi_is_ibm())
5002 TPACPI_ACPIHANDLE_INIT(vid2);
5fba344c 5003
78f81cc4
BD		 5004 if (vid2_handle && acpi_evalf(NULL, &ivga, "\\IVGA", "d") && ivga)
5005 /* G41, assume IVGA doesn't change */
5006 vid_handle = vid2_handle;
5007
5008 if (!vid_handle)
5009 /* video switching not supported on R30, R31 */
efa27145 5010 video_supported = TPACPI_VIDEO_NONE;
e28393c0
HMH		 5011 else if (tpacpi_is_ibm() &&
5012 acpi_evalf(vid_handle, &video_orig_autosw, "SWIT", "qd"))
78f81cc4 5013 /* 570 */
efa27145 5014 video_supported = TPACPI_VIDEO_570;
e28393c0
HMH		 5015 else if (tpacpi_is_ibm() &&
5016 acpi_evalf(vid_handle, &video_orig_autosw, "^VADL", "qd"))
78f81cc4 5017 /* 600e/x, 770e, 770x */
efa27145 5018 video_supported = TPACPI_VIDEO_770;
78f81cc4
BD		 5019 else
5020 /* all others */
efa27145 5021 video_supported = TPACPI_VIDEO_NEW;
1da177e4 5022
fe08bc4b
HMH		 5023 vdbg_printk(TPACPI_DBG_INIT, "video is %s, mode %d\n",
5024 str_supported(video_supported != TPACPI_VIDEO_NONE),
5025 video_supported);
5026
72a979f0 5027 return (video_supported != TPACPI_VIDEO_NONE) ? 0 : 1;
1da177e4
LT		 5028}
5029
56b6aeb0
HMH		 5030static void video_exit(void)
5031{
83f34724
HMH		 5032 dbg_printk(TPACPI_DBG_EXIT,
5033 "restoring original video autoswitch mode\n");
5034 if (video_autosw_set(video_orig_autosw))
5cac62ac 5035 pr_err("error while trying to restore original video autoswitch mode\n");
56b6aeb0
HMH		 5036}
5037
83f34724 5038static int video_outputsw_get(void)
1da177e4
LT		 5039{
5040 int status = 0;
5041 int i;
5042
83f34724
HMH		 5043 switch (video_supported) {
5044 case TPACPI_VIDEO_570:
5045 if (!acpi_evalf(NULL, &i, "\\_SB.PHS", "dd",
5046 TP_ACPI_VIDEO_570_PHSCMD))
5047 return -EIO;
5048 status = i & TP_ACPI_VIDEO_570_PHSMASK;
5049 break;
5050 case TPACPI_VIDEO_770:
5051 if (!acpi_evalf(NULL, &i, "\\VCDL", "d"))
5052 return -EIO;
5053 if (i)
5054 status |= TP_ACPI_VIDEO_S_LCD;
5055 if (!acpi_evalf(NULL, &i, "\\VCDC", "d"))
5056 return -EIO;
5057 if (i)
5058 status |= TP_ACPI_VIDEO_S_CRT;
5059 break;
5060 case TPACPI_VIDEO_NEW:
5061 if (!acpi_evalf(NULL, NULL, "\\VUPS", "vd", 1) ||
5062 !acpi_evalf(NULL, &i, "\\VCDC", "d"))
5063 return -EIO;
5064 if (i)
5065 status |= TP_ACPI_VIDEO_S_CRT;
5066
5067 if (!acpi_evalf(NULL, NULL, "\\VUPS", "vd", 0) ||
5068 !acpi_evalf(NULL, &i, "\\VCDL", "d"))
5069 return -EIO;
5070 if (i)
5071 status |= TP_ACPI_VIDEO_S_LCD;
5072 if (!acpi_evalf(NULL, &i, "\\VCDD", "d"))
5073 return -EIO;
5074 if (i)
5075 status |= TP_ACPI_VIDEO_S_DVI;
5076 break;
5077 default:
5078 return -ENOSYS;
78f81cc4
BD		 5079 }
5080
5081 return status;
5082}
1da177e4 5083
83f34724 5084static int video_outputsw_set(int status)
78f81cc4 5085{
83f34724
HMH		 5086 int autosw;
5087 int res = 0;
5088
5089 switch (video_supported) {
5090 case TPACPI_VIDEO_570:
5091 res = acpi_evalf(NULL, NULL,
5092 "\\_SB.PHS2", "vdd",
5093 TP_ACPI_VIDEO_570_PHS2CMD,
5094 status | TP_ACPI_VIDEO_570_PHS2SET);
5095 break;
5096 case TPACPI_VIDEO_770:
5097 autosw = video_autosw_get();
5098 if (autosw < 0)
5099 return autosw;
1da177e4 5100
83f34724
HMH		 5101 res = video_autosw_set(1);
5102 if (res)
5103 return res;
5104 res = acpi_evalf(vid_handle, NULL,
5105 "ASWT", "vdd", status * 0x100, 0);
5106 if (!autosw && video_autosw_set(autosw)) {
0978e012 5107 pr_err("video auto-switch left enabled due to error\n");
83f34724
HMH		 5108 return -EIO;
5109 }
5110 break;
5111 case TPACPI_VIDEO_NEW:
5112 res = acpi_evalf(NULL, NULL, "\\VUPS", "vd", 0x80) &&
35ff8b9f 5113 acpi_evalf(NULL, NULL, "\\VSDS", "vdd", status, 1);
83f34724
HMH		 5114 break;
5115 default:
5116 return -ENOSYS;
5117 }
1da177e4 5118
72a979f0 5119 return (res) ? 0 : -EIO;
1da177e4
LT		 5120}
5121
83f34724 5122static int video_autosw_get(void)
78f81cc4 5123{
83f34724 5124 int autosw = 0;
78f81cc4 5125
83f34724
HMH		 5126 switch (video_supported) {
5127 case TPACPI_VIDEO_570:
5128 if (!acpi_evalf(vid_handle, &autosw, "SWIT", "d"))
5129 return -EIO;
5130 break;
5131 case TPACPI_VIDEO_770:
5132 case TPACPI_VIDEO_NEW:
5133 if (!acpi_evalf(vid_handle, &autosw, "^VDEE", "d"))
5134 return -EIO;
5135 break;
5136 default:
5137 return -ENOSYS;
5138 }
78f81cc4 5139
83f34724 5140 return autosw & 1;
78f81cc4
BD		 5141}
5142
83f34724 5143static int video_autosw_set(int enable)
78f81cc4 5144{
72a979f0 5145 if (!acpi_evalf(vid_handle, NULL, "_DOS", "vd", (enable) ? 1 : 0))
83f34724
HMH		 5146 return -EIO;
5147 return 0;
78f81cc4
BD		 5148}
5149
83f34724 5150static int video_outputsw_cycle(void)
78f81cc4 5151{
83f34724
HMH		 5152 int autosw = video_autosw_get();
5153 int res;
78f81cc4 5154
83f34724
HMH		 5155 if (autosw < 0)
5156 return autosw;
78f81cc4 5157
83f34724
HMH		 5158 switch (video_supported) {
5159 case TPACPI_VIDEO_570:
5160 res = video_autosw_set(1);
5161 if (res)
5162 return res;
5163 res = acpi_evalf(ec_handle, NULL, "_Q16", "v");
5164 break;
5165 case TPACPI_VIDEO_770:
5166 case TPACPI_VIDEO_NEW:
5167 res = video_autosw_set(1);
5168 if (res)
5169 return res;
5170 res = acpi_evalf(vid_handle, NULL, "VSWT", "v");
5171 break;
5172 default:
5173 return -ENOSYS;
5174 }
5175 if (!autosw && video_autosw_set(autosw)) {
0978e012 5176 pr_err("video auto-switch left enabled due to error\n");
83f34724 5177 return -EIO;
78f81cc4
BD		 5178 }
5179
72a979f0 5180 return (res) ? 0 : -EIO;
83f34724
HMH		 5181}
5182
5183static int video_expand_toggle(void)
5184{
5185 switch (video_supported) {
5186 case TPACPI_VIDEO_570:
72a979f0 5187 return acpi_evalf(ec_handle, NULL, "_Q17", "v") ?
83f34724
HMH		 5188 0 : -EIO;
5189 case TPACPI_VIDEO_770:
72a979f0 5190 return acpi_evalf(vid_handle, NULL, "VEXP", "v") ?
83f34724
HMH		 5191 0 : -EIO;
5192 case TPACPI_VIDEO_NEW:
72a979f0 5193 return acpi_evalf(NULL, NULL, "\\VEXP", "v") ?
83f34724
HMH		 5194 0 : -EIO;
5195 default:
5196 return -ENOSYS;
5197 }
5198 /* not reached */
78f81cc4
BD		 5199}
5200
887965e6 5201static int video_read(struct seq_file *m)
56b6aeb0 5202{
83f34724 5203 int status, autosw;
56b6aeb0 5204
83f34724 5205 if (video_supported == TPACPI_VIDEO_NONE) {
887965e6
AD		 5206 seq_printf(m, "status:\t\tnot supported\n");
5207 return 0;
56b6aeb0
HMH		 5208 }
5209
b525c06c
HMH		 5210 /* Even reads can crash X.org, so... */
5211 if (!capable(CAP_SYS_ADMIN))
5212 return -EPERM;
5213
83f34724
HMH		 5214 status = video_outputsw_get();
5215 if (status < 0)
5216 return status;
5217
5218 autosw = video_autosw_get();
5219 if (autosw < 0)
5220 return autosw;
5221
887965e6
AD		 5222 seq_printf(m, "status:\t\tsupported\n");
5223 seq_printf(m, "lcd:\t\t%s\n", enabled(status, 0));
5224 seq_printf(m, "crt:\t\t%s\n", enabled(status, 1));
efa27145 5225 if (video_supported == TPACPI_VIDEO_NEW)
887965e6
AD		 5226 seq_printf(m, "dvi:\t\t%s\n", enabled(status, 3));
5227 seq_printf(m, "auto:\t\t%s\n", enabled(autosw, 0));
5228 seq_printf(m, "commands:\tlcd_enable, lcd_disable\n");
5229 seq_printf(m, "commands:\tcrt_enable, crt_disable\n");
efa27145 5230 if (video_supported == TPACPI_VIDEO_NEW)
887965e6
AD		 5231 seq_printf(m, "commands:\tdvi_enable, dvi_disable\n");
5232 seq_printf(m, "commands:\tauto_enable, auto_disable\n");
5233 seq_printf(m, "commands:\tvideo_switch, expand_toggle\n");
56b6aeb0 5234
887965e6 5235 return 0;
56b6aeb0
HMH		 5236}
5237
78f81cc4 5238static int video_write(char *buf)
1da177e4
LT		 5239{
5240 char *cmd;
5241 int enable, disable, status;
83f34724 5242 int res;
1da177e4 5243
83f34724 5244 if (video_supported == TPACPI_VIDEO_NONE)
78f81cc4
BD		 5245 return -ENODEV;
5246
b525c06c
HMH		 5247 /* Even reads can crash X.org, let alone writes... */
5248 if (!capable(CAP_SYS_ADMIN))
5249 return -EPERM;
5250
83f34724
HMH		 5251 enable = 0;
5252 disable = 0;
1da177e4 5253
be51bd45 5254 while ((cmd = strsep(&buf, ","))) {
1da177e4 5255 if (strlencmp(cmd, "lcd_enable") == 0) {
83f34724 5256 enable |= TP_ACPI_VIDEO_S_LCD;
1da177e4 5257 } else if (strlencmp(cmd, "lcd_disable") == 0) {
83f34724 5258 disable |= TP_ACPI_VIDEO_S_LCD;
1da177e4 5259 } else if (strlencmp(cmd, "crt_enable") == 0) {
83f34724 5260 enable |= TP_ACPI_VIDEO_S_CRT;
1da177e4 5261 } else if (strlencmp(cmd, "crt_disable") == 0) {
83f34724 5262 disable |= TP_ACPI_VIDEO_S_CRT;
efa27145 5263 } else if (video_supported == TPACPI_VIDEO_NEW &&
78f81cc4 5264 strlencmp(cmd, "dvi_enable") == 0) {
83f34724 5265 enable |= TP_ACPI_VIDEO_S_DVI;
efa27145 5266 } else if (video_supported == TPACPI_VIDEO_NEW &&
78f81cc4 5267 strlencmp(cmd, "dvi_disable") == 0) {
83f34724 5268 disable |= TP_ACPI_VIDEO_S_DVI;
1da177e4 5269 } else if (strlencmp(cmd, "auto_enable") == 0) {
83f34724
HMH		 5270 res = video_autosw_set(1);
5271 if (res)
5272 return res;
1da177e4 5273 } else if (strlencmp(cmd, "auto_disable") == 0) {
83f34724
HMH		 5274 res = video_autosw_set(0);
5275 if (res)
5276 return res;
1da177e4 5277 } else if (strlencmp(cmd, "video_switch") == 0) {
83f34724
HMH		 5278 res = video_outputsw_cycle();
5279 if (res)
5280 return res;
1da177e4 5281 } else if (strlencmp(cmd, "expand_toggle") == 0) {
83f34724
HMH		 5282 res = video_expand_toggle();
5283 if (res)
5284 return res;
1da177e4
LT		 5285 } else
5286 return -EINVAL;
5287 }
5288
5289 if (enable || disable) {
83f34724
HMH		 5290 status = video_outputsw_get();
5291 if (status < 0)
5292 return status;
5293 res = video_outputsw_set((status & ~disable) | enable);
5294 if (res)
5295 return res;
1da177e4
LT		 5296 }
5297
5298 return 0;
5299}
5300
a5763f22
HMH		 5301static struct ibm_struct video_driver_data = {
5302 .name = "video",
5303 .read = video_read,
5304 .write = video_write,
5305 .exit = video_exit,
5306};
5307
d7c1d17d
HMH		 5308#endif /* CONFIG_THINKPAD_ACPI_VIDEO */
5309
bb28f3d5
PR		 5310/*************************************************************************
5311 * Keyboard backlight subdriver
5312 */
5313
c685e20d
HG		 5314static enum led_brightness kbdlight_brightness;
5315static DEFINE_MUTEX(kbdlight_mutex);
5316
bb28f3d5
PR		 5317static int kbdlight_set_level(int level)
5318{
c685e20d
HG		 5319 int ret = 0;
5320
bb28f3d5
PR		 5321 if (!hkey_handle)
5322 return -ENXIO;
5323
c685e20d
HG		 5324 mutex_lock(&kbdlight_mutex);
5325
bb28f3d5 5326 if (!acpi_evalf(hkey_handle, NULL, "MLCS", "dd", level))
c685e20d
HG		 5327 ret = -EIO;
5328 else
5329 kbdlight_brightness = level;
bb28f3d5 5330
c685e20d
HG		 5331 mutex_unlock(&kbdlight_mutex);
5332
5333 return ret;
bb28f3d5
PR		 5334}
5335
5336static int kbdlight_get_level(void)
5337{
5338 int status = 0;
5339
5340 if (!hkey_handle)
5341 return -ENXIO;
5342
5343 if (!acpi_evalf(hkey_handle, &status, "MLCG", "dd", 0))
5344 return -EIO;
5345
5346 if (status < 0)
5347 return status;
5348
5349 return status & 0x3;
5350}
5351
5352static bool kbdlight_is_supported(void)
5353{
5354 int status = 0;
5355
5356 if (!hkey_handle)
5357 return false;
5358
5359 if (!acpi_has_method(hkey_handle, "MLCG")) {
5360 vdbg_printk(TPACPI_DBG_INIT, "kbdlight MLCG is unavailable\n");
5361 return false;
5362 }
5363
5364 if (!acpi_evalf(hkey_handle, &status, "MLCG", "qdd", 0)) {
5365 vdbg_printk(TPACPI_DBG_INIT, "kbdlight MLCG failed\n");
5366 return false;
5367 }
5368
5369 if (status < 0) {
5370 vdbg_printk(TPACPI_DBG_INIT, "kbdlight MLCG err: %d\n", status);
5371 return false;
5372 }
5373
5374 vdbg_printk(TPACPI_DBG_INIT, "kbdlight MLCG returned 0x%x\n", status);
5375 /*
5376 * Guessed test for keyboard backlight:
5377 *
5378 * Machines with backlight keyboard return:
5379 * b010100000010000000XX - ThinkPad X1 Carbon 3rd
5380 * b110100010010000000XX - ThinkPad x230
5381 * b010100000010000000XX - ThinkPad x240
5382 * b010100000010000000XX - ThinkPad W541
5383 * (XX is current backlight level)
5384 *
5385 * Machines without backlight keyboard return:
5386 * b10100001000000000000 - ThinkPad x230
5387 * b10110001000000000000 - ThinkPad E430
5388 * b00000000000000000000 - ThinkPad E450
5389 *
5390 * Candidate BITs for detection test (XOR):
5391 * b01000000001000000000
5392 * ^
5393 */
5394 return status & BIT(9);
5395}
5396
86ec0c2c 5397static int kbdlight_sysfs_set(struct led_classdev *led_cdev,
bb28f3d5
PR		 5398 enum led_brightness brightness)
5399{
86ec0c2c 5400 return kbdlight_set_level(brightness);
bb28f3d5
PR		 5401}
5402
5403static enum led_brightness kbdlight_sysfs_get(struct led_classdev *led_cdev)
5404{
5405 int level;
5406
5407 level = kbdlight_get_level();
5408 if (level < 0)
5409 return 0;
5410
5411 return level;
5412}
5413
5414static struct tpacpi_led_classdev tpacpi_led_kbdlight = {
5415 .led_classdev = {
5416 .name = "tpacpi::kbd_backlight",
5417 .max_brightness = 2,
c685e20d 5418 .flags = LED_BRIGHT_HW_CHANGED,
86ec0c2c 5419 .brightness_set_blocking = &kbdlight_sysfs_set,
bb28f3d5 5420 .brightness_get = &kbdlight_sysfs_get,
bb28f3d5
PR		 5421 }
5422};
5423
5424static int __init kbdlight_init(struct ibm_init_struct *iibm)
5425{
5426 int rc;
5427
5428 vdbg_printk(TPACPI_DBG_INIT, "initializing kbdlight subdriver\n");
5429
5430 TPACPI_ACPIHANDLE_INIT(hkey);
bb28f3d5
PR		 5431
5432 if (!kbdlight_is_supported()) {
5433 tp_features.kbdlight = 0;
5434 vdbg_printk(TPACPI_DBG_INIT, "kbdlight is unsupported\n");
5435 return 1;
5436 }
5437
c685e20d 5438 kbdlight_brightness = kbdlight_sysfs_get(NULL);
bb28f3d5
PR		 5439 tp_features.kbdlight = 1;
5440
5441 rc = led_classdev_register(&tpacpi_pdev->dev,
5442 &tpacpi_led_kbdlight.led_classdev);
5443 if (rc < 0) {
5444 tp_features.kbdlight = 0;
5445 return rc;
5446 }
5447
c685e20d
HG		 5448 tpacpi_hotkey_driver_mask_set(hotkey_driver_mask |
5449 TP_ACPI_HKEY_KBD_LIGHT_MASK);
bb28f3d5
PR		 5450 return 0;
5451}
5452
5453static void kbdlight_exit(void)
5454{
41f80046 5455 led_classdev_unregister(&tpacpi_led_kbdlight.led_classdev);
bb28f3d5
PR		 5456}
5457
afcedebc
MTT		 5458static int kbdlight_set_level_and_update(int level)
5459{
5460 int ret;
5461 struct led_classdev *led_cdev;
5462
5463 ret = kbdlight_set_level(level);
5464 led_cdev = &tpacpi_led_kbdlight.led_classdev;
5465
5466 if (ret == 0 && !(led_cdev->flags & LED_SUSPENDED))
5467 led_cdev->brightness = level;
5468
5469 return ret;
5470}
5471
bb28f3d5
PR		 5472static int kbdlight_read(struct seq_file *m)
5473{
5474 int level;
5475
5476 if (!tp_features.kbdlight) {
5477 seq_printf(m, "status:\t\tnot supported\n");
5478 } else {
5479 level = kbdlight_get_level();
5480 if (level < 0)
5481 seq_printf(m, "status:\t\terror %d\n", level);
5482 else
5483 seq_printf(m, "status:\t\t%d\n", level);
5484 seq_printf(m, "commands:\t0, 1, 2\n");
5485 }
5486
5487 return 0;
5488}
5489
5490static int kbdlight_write(char *buf)
5491{
5492 char *cmd;
466f4697 5493 int res, level = -EINVAL;
bb28f3d5
PR		 5494
5495 if (!tp_features.kbdlight)
5496 return -ENODEV;
5497
be51bd45 5498 while ((cmd = strsep(&buf, ","))) {
466f4697
AS		 5499 res = kstrtoint(cmd, 10, &level);
5500 if (res < 0)
5501 return res;
bb28f3d5
PR		 5502 }
5503
466f4697 5504 if (level >= 3 || level < 0)
bb28f3d5
PR		 5505 return -EINVAL;
5506
afcedebc
MTT		 5507 return kbdlight_set_level_and_update(level);
5508}
5509
5510static void kbdlight_suspend(void)
5511{
5512 struct led_classdev *led_cdev;
5513
5514 if (!tp_features.kbdlight)
5515 return;
5516
5517 led_cdev = &tpacpi_led_kbdlight.led_classdev;
5518 led_update_brightness(led_cdev);
5519 led_classdev_suspend(led_cdev);
5520}
5521
5522static void kbdlight_resume(void)
5523{
5524 if (!tp_features.kbdlight)
5525 return;
5526
5527 led_classdev_resume(&tpacpi_led_kbdlight.led_classdev);
bb28f3d5
PR		 5528}
5529
5530static struct ibm_struct kbdlight_driver_data = {
5531 .name = "kbdlight",
5532 .read = kbdlight_read,
5533 .write = kbdlight_write,
afcedebc
MTT		 5534 .suspend = kbdlight_suspend,
5535 .resume = kbdlight_resume,
bb28f3d5
PR		 5536 .exit = kbdlight_exit,
5537};
5538
56b6aeb0
HMH		 5539/*************************************************************************
5540 * Light (thinklight) subdriver
5541 */
1da177e4 5542
e0c7dfe7
HMH		 5543TPACPI_HANDLE(lght, root, "\\LGHT"); /* A21e, A2xm/p, T20-22, X20-21 */
5544TPACPI_HANDLE(ledb, ec, "LEDB"); /* G4x */
56b6aeb0 5545
4fa6811b
HMH		 5546static int light_get_status(void)
5547{
5548 int status = 0;
5549
5550 if (tp_features.light_status) {
5551 if (!acpi_evalf(ec_handle, &status, "KBLT", "d"))
5552 return -EIO;
5553 return (!!status);
5554 }
5555
5556 return -ENXIO;
5557}
5558
5559static int light_set_status(int status)
5560{
5561 int rc;
5562
5563 if (tp_features.light) {
5564 if (cmos_handle) {
5565 rc = acpi_evalf(cmos_handle, NULL, NULL, "vd",
72a979f0 5566 (status) ?
4fa6811b
HMH		 5567 TP_CMOS_THINKLIGHT_ON :
5568 TP_CMOS_THINKLIGHT_OFF);
5569 } else {
5570 rc = acpi_evalf(lght_handle, NULL, NULL, "vd",
72a979f0 5571 (status) ? 1 : 0);
4fa6811b 5572 }
72a979f0 5573 return (rc) ? 0 : -EIO;
4fa6811b
HMH		 5574 }
5575
5576 return -ENXIO;
5577}
5578
86ec0c2c 5579static int light_sysfs_set(struct led_classdev *led_cdev,
e306501d
HMH		 5580 enum led_brightness brightness)
5581{
86ec0c2c
HG		 5582 return light_set_status((brightness != LED_OFF) ?
5583 TPACPI_LED_ON : TPACPI_LED_OFF);
e306501d
HMH		 5584}
5585
5586static enum led_brightness light_sysfs_get(struct led_classdev *led_cdev)
5587{
72a979f0 5588 return (light_get_status() == 1) ? LED_FULL : LED_OFF;
e306501d
HMH		 5589}
5590
5591static struct tpacpi_led_classdev tpacpi_led_thinklight = {
5592 .led_classdev = {
5593 .name = "tpacpi::thinklight",
86ec0c2c 5594 .brightness_set_blocking = &light_sysfs_set,
e306501d
HMH		 5595 .brightness_get = &light_sysfs_get,
5596 }
5597};
5598
a5763f22 5599static int __init light_init(struct ibm_init_struct *iibm)
1da177e4 5600{
9c0a76e1 5601 int rc;
e306501d 5602
fe08bc4b
HMH		 5603 vdbg_printk(TPACPI_DBG_INIT, "initializing light subdriver\n");
5604
e28393c0
HMH		 5605 if (tpacpi_is_ibm()) {
5606 TPACPI_ACPIHANDLE_INIT(ledb);
5607 TPACPI_ACPIHANDLE_INIT(lght);
5608 }
e0c7dfe7 5609 TPACPI_ACPIHANDLE_INIT(cmos);
5fba344c 5610
78f81cc4 5611 /* light not supported on 570, 600e/x, 770e, 770x, G4x, R30, R31 */
d8fd94d9 5612 tp_features.light = (cmos_handle || lght_handle) && !ledb_handle;
78f81cc4 5613
d8fd94d9 5614 if (tp_features.light)
78f81cc4
BD		 5615 /* light status not supported on
5616 570, 600e/x, 770e, 770x, G4x, R30, R31, R32, X20 */
d8fd94d9
HMH		 5617 tp_features.light_status =
5618 acpi_evalf(ec_handle, NULL, "KBLT", "qv");
1da177e4 5619
9c0a76e1
HMH		 5620 vdbg_printk(TPACPI_DBG_INIT, "light is %s, light status is %s\n",
5621 str_supported(tp_features.light),
5622 str_supported(tp_features.light_status));
fe08bc4b 5623
9c0a76e1
HMH		 5624 if (!tp_features.light)
5625 return 1;
5626
5627 rc = led_classdev_register(&tpacpi_pdev->dev,
5628 &tpacpi_led_thinklight.led_classdev);
e306501d
HMH		 5629
5630 if (rc < 0) {
5631 tp_features.light = 0;
5632 tp_features.light_status = 0;
9c0a76e1
HMH		 5633 } else {
5634 rc = 0;
e306501d 5635 }
9c0a76e1 5636
e306501d
HMH		 5637 return rc;
5638}
5639
5640static void light_exit(void)
5641{
5642 led_classdev_unregister(&tpacpi_led_thinklight.led_classdev);
1da177e4
LT		 5643}
5644
887965e6 5645static int light_read(struct seq_file *m)
1da177e4 5646{
4fa6811b 5647 int status;
1da177e4 5648
d8fd94d9 5649 if (!tp_features.light) {
887965e6 5650 seq_printf(m, "status:\t\tnot supported\n");
d8fd94d9 5651 } else if (!tp_features.light_status) {
887965e6
AD		 5652 seq_printf(m, "status:\t\tunknown\n");
5653 seq_printf(m, "commands:\ton, off\n");
78f81cc4 5654 } else {
4fa6811b
HMH		 5655 status = light_get_status();
5656 if (status < 0)
5657 return status;
887965e6
AD		 5658 seq_printf(m, "status:\t\t%s\n", onoff(status, 0));
5659 seq_printf(m, "commands:\ton, off\n");
78f81cc4 5660 }
1da177e4 5661
887965e6 5662 return 0;
1da177e4
LT		 5663}
5664
78f81cc4 5665static int light_write(char *buf)
1da177e4 5666{
1da177e4 5667 char *cmd;
4fa6811b 5668 int newstatus = 0;
78f81cc4 5669
d8fd94d9 5670 if (!tp_features.light)
78f81cc4
BD		 5671 return -ENODEV;
5672
be51bd45 5673 while ((cmd = strsep(&buf, ","))) {
1da177e4 5674 if (strlencmp(cmd, "on") == 0) {
4fa6811b 5675 newstatus = 1;
1da177e4 5676 } else if (strlencmp(cmd, "off") == 0) {
4fa6811b 5677 newstatus = 0;
1da177e4
LT		 5678 } else
5679 return -EINVAL;
1da177e4
LT		 5680 }
5681
4fa6811b 5682 return light_set_status(newstatus);
1da177e4
LT		 5683}
5684
a5763f22
HMH		 5685static struct ibm_struct light_driver_data = {
5686 .name = "light",
5687 .read = light_read,
5688 .write = light_write,
e306501d 5689 .exit = light_exit,
a5763f22
HMH		 5690};
5691
56b6aeb0
HMH		 5692/*************************************************************************
5693 * CMOS subdriver
5694 */
5695
b616004c
HMH		 5696/* sysfs cmos_command -------------------------------------------------- */
5697static ssize_t cmos_command_store(struct device *dev,
5698 struct device_attribute *attr,
5699 const char *buf, size_t count)
5700{
5701 unsigned long cmos_cmd;
5702 int res;
5703
5704 if (parse_strtoul(buf, 21, &cmos_cmd))
5705 return -EINVAL;
5706
5707 res = issue_thinkpad_cmos_command(cmos_cmd);
72a979f0 5708 return (res) ? res : count;
b616004c
HMH		 5709}
5710
b4dd04ac 5711static DEVICE_ATTR_WO(cmos_command);
b616004c
HMH		 5712
5713/* --------------------------------------------------------------------- */
5714
a5763f22 5715static int __init cmos_init(struct ibm_init_struct *iibm)
5fba344c 5716{
b616004c
HMH		 5717 int res;
5718
fe08bc4b
HMH		 5719 vdbg_printk(TPACPI_DBG_INIT,
5720 "initializing cmos commands subdriver\n");
5721
e0c7dfe7 5722 TPACPI_ACPIHANDLE_INIT(cmos);
5fba344c 5723
fe08bc4b
HMH		 5724 vdbg_printk(TPACPI_DBG_INIT, "cmos commands are %s\n",
5725 str_supported(cmos_handle != NULL));
b616004c
HMH		 5726
5727 res = device_create_file(&tpacpi_pdev->dev, &dev_attr_cmos_command);
5728 if (res)
5729 return res;
5730
72a979f0 5731 return (cmos_handle) ? 0 : 1;
5fba344c
HMH		 5732}
5733
b616004c
HMH		 5734static void cmos_exit(void)
5735{
5736 device_remove_file(&tpacpi_pdev->dev, &dev_attr_cmos_command);
5737}
5738
887965e6 5739static int cmos_read(struct seq_file *m)
1da177e4 5740{
78f81cc4
BD		 5741 /* cmos not supported on 570, 600e/x, 770e, 770x, A21e, A2xm/p,
5742 R30, R31, T20-22, X20-21 */
1da177e4 5743 if (!cmos_handle)
887965e6 5744 seq_printf(m, "status:\t\tnot supported\n");
1da177e4 5745 else {
887965e6
AD		 5746 seq_printf(m, "status:\t\tsupported\n");
5747 seq_printf(m, "commands:\t<cmd> (<cmd> is 0-21)\n");
1da177e4
LT		 5748 }
5749
887965e6 5750 return 0;
1da177e4
LT		 5751}
5752
78f81cc4 5753static int cmos_write(char *buf)
1da177e4
LT		 5754{
5755 char *cmd;
c9bea99c 5756 int cmos_cmd, res;
1da177e4 5757
be51bd45 5758 while ((cmd = strsep(&buf, ","))) {
78f81cc4
BD		 5759 if (sscanf(cmd, "%u", &cmos_cmd) == 1 &&
5760 cmos_cmd >= 0 && cmos_cmd <= 21) {
1da177e4
LT		 5761 /* cmos_cmd set */
5762 } else
5763 return -EINVAL;
5764
c9bea99c
HMH		 5765 res = issue_thinkpad_cmos_command(cmos_cmd);
5766 if (res)
5767 return res;
1da177e4
LT		 5768 }
5769
5770 return 0;
78f81cc4
BD		 5771}
5772
a5763f22
HMH		 5773static struct ibm_struct cmos_driver_data = {
5774 .name = "cmos",
5775 .read = cmos_read,
5776 .write = cmos_write,
b616004c 5777 .exit = cmos_exit,
a5763f22 5778};
56b6aeb0
HMH		 5779
5780/*************************************************************************
5781 * LED subdriver
5782 */
5783
f74a27d4
HMH		 5784enum led_access_mode {
5785 TPACPI_LED_NONE = 0,
5786 TPACPI_LED_570, /* 570 */
5787 TPACPI_LED_OLD, /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20-21 */
5788 TPACPI_LED_NEW, /* all others */
5789};
5790
5791enum { /* For TPACPI_LED_OLD */
5792 TPACPI_LED_EC_HLCL = 0x0c, /* EC reg to get led to power on */
5793 TPACPI_LED_EC_HLBL = 0x0d, /* EC reg to blink a lit led */
5794 TPACPI_LED_EC_HLMS = 0x0e, /* EC reg to select led to command */
5795};
5796
9a8e1738 5797static enum led_access_mode led_supported;
78f81cc4 5798
2cbb5c8f 5799static acpi_handle led_handle;
56b6aeb0 5800
f21179a4 5801#define TPACPI_LED_NUMLEDS 16
af116101
HMH		 5802static struct tpacpi_led_classdev *tpacpi_leds;
5803static enum led_status_t tpacpi_led_state_cache[TPACPI_LED_NUMLEDS];
e3aa51fe 5804static const char * const tpacpi_led_names[TPACPI_LED_NUMLEDS] = {
af116101
HMH		 5805 /* there's a limit of 19 chars + NULL before 2.6.26 */
5806 "tpacpi::power",
5807 "tpacpi:orange:batt",
5808 "tpacpi:green:batt",
5809 "tpacpi::dock_active",
5810 "tpacpi::bay_active",
5811 "tpacpi::dock_batt",
5812 "tpacpi::unknown_led",
5813 "tpacpi::standby",
f21179a4
HMH		 5814 "tpacpi::dock_status1",
5815 "tpacpi::dock_status2",
5816 "tpacpi::unknown_led2",
5817 "tpacpi::unknown_led3",
5818 "tpacpi::thinkvantage",
af116101 5819};
f21179a4 5820#define TPACPI_SAFE_LEDS 0x1081U
a4d5effc
HMH		 5821
5822static inline bool tpacpi_is_led_restricted(const unsigned int led)
5823{
5824#ifdef CONFIG_THINKPAD_ACPI_UNSAFE_LEDS
5825 return false;
5826#else
f21179a4 5827 return (1U & (TPACPI_SAFE_LEDS >> led)) == 0;
a4d5effc
HMH		 5828#endif
5829}
af116101 5830
24e45bbe 5831static int led_get_status(const unsigned int led)
4fa6811b
HMH		 5832{
5833 int status;
af116101 5834 enum led_status_t led_s;
4fa6811b
HMH		 5835
5836 switch (led_supported) {
5837 case TPACPI_LED_570:
5838 if (!acpi_evalf(ec_handle,
5839 &status, "GLED", "dd", 1 << led))
5840 return -EIO;
72a979f0 5841 led_s = (status == 0) ?
4fa6811b 5842 TPACPI_LED_OFF :
72a979f0 5843 ((status == 1) ?
4fa6811b
HMH		 5844 TPACPI_LED_ON :
5845 TPACPI_LED_BLINK);
af116101
HMH		 5846 tpacpi_led_state_cache[led] = led_s;
5847 return led_s;
4fa6811b
HMH		 5848 default:
5849 return -ENXIO;
5850 }
5851
5852 /* not reached */
5853}
5854
24e45bbe
HMH		 5855static int led_set_status(const unsigned int led,
5856 const enum led_status_t ledstatus)
4fa6811b
HMH		 5857{
5858 /* off, on, blink. Index is led_status_t */
24e45bbe
HMH		 5859 static const unsigned int led_sled_arg1[] = { 0, 1, 3 };
5860 static const unsigned int led_led_arg1[] = { 0, 0x80, 0xc0 };
4fa6811b
HMH		 5861
5862 int rc = 0;
5863
5864 switch (led_supported) {
5865 case TPACPI_LED_570:
24e45bbe 5866 /* 570 */
a4d5effc 5867 if (unlikely(led > 7))
24e45bbe 5868 return -EINVAL;
a4d5effc
HMH		 5869 if (unlikely(tpacpi_is_led_restricted(led)))
5870 return -EPERM;
24e45bbe
HMH		 5871 if (!acpi_evalf(led_handle, NULL, NULL, "vdd",
5872 (1 << led), led_sled_arg1[ledstatus]))
aac3311c 5873 return -EIO;
24e45bbe 5874 break;
4fa6811b 5875 case TPACPI_LED_OLD:
24e45bbe 5876 /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20 */
a4d5effc 5877 if (unlikely(led > 7))
24e45bbe 5878 return -EINVAL;
a4d5effc
HMH		 5879 if (unlikely(tpacpi_is_led_restricted(led)))
5880 return -EPERM;
24e45bbe
HMH		 5881 rc = ec_write(TPACPI_LED_EC_HLMS, (1 << led));
5882 if (rc >= 0)
5883 rc = ec_write(TPACPI_LED_EC_HLBL,
5884 (ledstatus == TPACPI_LED_BLINK) << led);
5885 if (rc >= 0)
5886 rc = ec_write(TPACPI_LED_EC_HLCL,
5887 (ledstatus != TPACPI_LED_OFF) << led);
5888 break;
4fa6811b 5889 case TPACPI_LED_NEW:
24e45bbe 5890 /* all others */
a4d5effc
HMH		 5891 if (unlikely(led >= TPACPI_LED_NUMLEDS))
5892 return -EINVAL;
5893 if (unlikely(tpacpi_is_led_restricted(led)))
5894 return -EPERM;
24e45bbe
HMH		 5895 if (!acpi_evalf(led_handle, NULL, NULL, "vdd",
5896 led, led_led_arg1[ledstatus]))
aac3311c 5897 return -EIO;
24e45bbe 5898 break;
4fa6811b 5899 default:
aac3311c 5900 return -ENXIO;
4fa6811b
HMH		 5901 }
5902
af116101
HMH		 5903 if (!rc)
5904 tpacpi_led_state_cache[led] = ledstatus;
5905
5906 return rc;
5907}
5908
86ec0c2c 5909static int led_sysfs_set(struct led_classdev *led_cdev,
af116101
HMH		 5910 enum led_brightness brightness)
5911{
5912 struct tpacpi_led_classdev *data = container_of(led_cdev,
5913 struct tpacpi_led_classdev, led_classdev);
86ec0c2c 5914 enum led_status_t new_state;
af116101 5915
75bd3bf2 5916 if (brightness == LED_OFF)
86ec0c2c 5917 new_state = TPACPI_LED_OFF;
75bd3bf2 5918 else if (tpacpi_led_state_cache[data->led] != TPACPI_LED_BLINK)
86ec0c2c 5919 new_state = TPACPI_LED_ON;
75bd3bf2 5920 else
86ec0c2c 5921 new_state = TPACPI_LED_BLINK;
75bd3bf2 5922
86ec0c2c 5923 return led_set_status(data->led, new_state);
af116101
HMH		 5924}
5925
5926static int led_sysfs_blink_set(struct led_classdev *led_cdev,
5927 unsigned long *delay_on, unsigned long *delay_off)
5928{
5929 struct tpacpi_led_classdev *data = container_of(led_cdev,
5930 struct tpacpi_led_classdev, led_classdev);
5931
5932 /* Can we choose the flash rate? */
5933 if (*delay_on == 0 && *delay_off == 0) {
5934 /* yes. set them to the hardware blink rate (1 Hz) */
5935 *delay_on = 500; /* ms */
5936 *delay_off = 500; /* ms */
5937 } else if ((*delay_on != 500) || (*delay_off != 500))
5938 return -EINVAL;
5939
86ec0c2c 5940 return led_set_status(data->led, TPACPI_LED_BLINK);
af116101
HMH		 5941}
5942
5943static enum led_brightness led_sysfs_get(struct led_classdev *led_cdev)
5944{
5945 int rc;
5946
5947 struct tpacpi_led_classdev *data = container_of(led_cdev,
5948 struct tpacpi_led_classdev, led_classdev);
5949
5950 rc = led_get_status(data->led);
5951
5952 if (rc == TPACPI_LED_OFF || rc < 0)
5953 rc = LED_OFF; /* no error handling in led class :( */
5954 else
5955 rc = LED_FULL;
5956
4fa6811b
HMH		 5957 return rc;
5958}
5959
af116101
HMH		 5960static void led_exit(void)
5961{
5962 unsigned int i;
5963
41f80046
AS		 5964 for (i = 0; i < TPACPI_LED_NUMLEDS; i++)
5965 led_classdev_unregister(&tpacpi_leds[i].led_classdev);
af116101
HMH		 5966
5967 kfree(tpacpi_leds);
af116101
HMH		 5968}
5969
a4d5effc
HMH		 5970static int __init tpacpi_init_led(unsigned int led)
5971{
f21179a4
HMH		 5972 /* LEDs with no name don't get registered */
5973 if (!tpacpi_led_names[led])
5974 return 0;
5975
86ec0c2c 5976 tpacpi_leds[led].led_classdev.brightness_set_blocking = &led_sysfs_set;
a4d5effc
HMH		 5977 tpacpi_leds[led].led_classdev.blink_set = &led_sysfs_blink_set;
5978 if (led_supported == TPACPI_LED_570)
41f80046 5979 tpacpi_leds[led].led_classdev.brightness_get = &led_sysfs_get;
a4d5effc
HMH		 5980
5981 tpacpi_leds[led].led_classdev.name = tpacpi_led_names[led];
41f80046 5982 tpacpi_leds[led].led = led;
a4d5effc 5983
41f80046 5984 return led_classdev_register(&tpacpi_pdev->dev, &tpacpi_leds[led].led_classdev);
a4d5effc
HMH		 5985}
5986
f21179a4
HMH		 5987static const struct tpacpi_quirk led_useful_qtable[] __initconst = {
5988 TPACPI_Q_IBM('1', 'E', 0x009f), /* A30 */
5989 TPACPI_Q_IBM('1', 'N', 0x009f), /* A31 */
5990 TPACPI_Q_IBM('1', 'G', 0x009f), /* A31 */
5991
5992 TPACPI_Q_IBM('1', 'I', 0x0097), /* T30 */
5993 TPACPI_Q_IBM('1', 'R', 0x0097), /* T40, T41, T42, R50, R51 */
5994 TPACPI_Q_IBM('7', '0', 0x0097), /* T43, R52 */
5995 TPACPI_Q_IBM('1', 'Y', 0x0097), /* T43 */
5996 TPACPI_Q_IBM('1', 'W', 0x0097), /* R50e */
5997 TPACPI_Q_IBM('1', 'V', 0x0097), /* R51 */
5998 TPACPI_Q_IBM('7', '8', 0x0097), /* R51e */
5999 TPACPI_Q_IBM('7', '6', 0x0097), /* R52 */
6000
6001 TPACPI_Q_IBM('1', 'K', 0x00bf), /* X30 */
6002 TPACPI_Q_IBM('1', 'Q', 0x00bf), /* X31, X32 */
6003 TPACPI_Q_IBM('1', 'U', 0x00bf), /* X40 */
6004 TPACPI_Q_IBM('7', '4', 0x00bf), /* X41 */
6005 TPACPI_Q_IBM('7', '5', 0x00bf), /* X41t */
6006
6007 TPACPI_Q_IBM('7', '9', 0x1f97), /* T60 (1) */
6008 TPACPI_Q_IBM('7', '7', 0x1f97), /* Z60* (1) */
6009 TPACPI_Q_IBM('7', 'F', 0x1f97), /* Z61* (1) */
6010 TPACPI_Q_IBM('7', 'B', 0x1fb7), /* X60 (1) */
6011
6012 /* (1) - may have excess leds enabled on MSB */
6013
6014 /* Defaults (order matters, keep last, don't reorder!) */
6015 { /* Lenovo */
6016 .vendor = PCI_VENDOR_ID_LENOVO,
6017 .bios = TPACPI_MATCH_ANY, .ec = TPACPI_MATCH_ANY,
6018 .quirks = 0x1fffU,
6019 },
6020 { /* IBM ThinkPads with no EC version string */
6021 .vendor = PCI_VENDOR_ID_IBM,
6022 .bios = TPACPI_MATCH_ANY, .ec = TPACPI_MATCH_UNKNOWN,
6023 .quirks = 0x00ffU,
6024 },
6025 { /* IBM ThinkPads with EC version string */
6026 .vendor = PCI_VENDOR_ID_IBM,
6027 .bios = TPACPI_MATCH_ANY, .ec = TPACPI_MATCH_ANY,
6028 .quirks = 0x00bfU,
6029 },
6030};
6031
2cbb5c8f
HMH		 6032static enum led_access_mode __init led_init_detect_mode(void)
6033{
6034 acpi_status status;
6035
6036 if (tpacpi_is_ibm()) {
6037 /* 570 */
6038 status = acpi_get_handle(ec_handle, "SLED", &led_handle);
6039 if (ACPI_SUCCESS(status))
6040 return TPACPI_LED_570;
6041
6042 /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20-21 */
6043 status = acpi_get_handle(ec_handle, "SYSL", &led_handle);
6044 if (ACPI_SUCCESS(status))
6045 return TPACPI_LED_OLD;
6046 }
6047
6048 /* most others */
6049 status = acpi_get_handle(ec_handle, "LED", &led_handle);
6050 if (ACPI_SUCCESS(status))
6051 return TPACPI_LED_NEW;
6052
6053 /* R30, R31, and unknown firmwares */
6054 led_handle = NULL;
6055 return TPACPI_LED_NONE;
6056}
6057
a5763f22 6058static int __init led_init(struct ibm_init_struct *iibm)
78f81cc4 6059{
af116101
HMH		 6060 unsigned int i;
6061 int rc;
f21179a4 6062 unsigned long useful_leds;
af116101 6063
fe08bc4b
HMH		 6064 vdbg_printk(TPACPI_DBG_INIT, "initializing LED subdriver\n");
6065
2cbb5c8f 6066 led_supported = led_init_detect_mode();
78f81cc4 6067
fcb44e12
AL		 6068 if (led_supported != TPACPI_LED_NONE) {
6069 useful_leds = tpacpi_check_quirks(led_useful_qtable,
6070 ARRAY_SIZE(led_useful_qtable));
6071
6072 if (!useful_leds) {
6073 led_handle = NULL;
6074 led_supported = TPACPI_LED_NONE;
6075 }
6076 }
6077
fe08bc4b
HMH		 6078 vdbg_printk(TPACPI_DBG_INIT, "LED commands are %s, mode %d\n",
6079 str_supported(led_supported), led_supported);
6080
f21179a4
HMH		 6081 if (led_supported == TPACPI_LED_NONE)
6082 return 1;
6083
6396bb22 6084 tpacpi_leds = kcalloc(TPACPI_LED_NUMLEDS, sizeof(*tpacpi_leds),
af116101
HMH		 6085 GFP_KERNEL);
6086 if (!tpacpi_leds) {
0978e012 6087 pr_err("Out of memory for LED data\n");
af116101
HMH		 6088 return -ENOMEM;
6089 }
6090
6091 for (i = 0; i < TPACPI_LED_NUMLEDS; i++) {
edf2d778
AL		 6092 tpacpi_leds[i].led = -1;
6093
41f80046 6094 if (!tpacpi_is_led_restricted(i) && test_bit(i, &useful_leds)) {
a4d5effc
HMH		 6095 rc = tpacpi_init_led(i);
6096 if (rc < 0) {
6097 led_exit();
6098 return rc;
6099 }
af116101
HMH		 6100 }
6101 }
6102
a4d5effc 6103#ifdef CONFIG_THINKPAD_ACPI_UNSAFE_LEDS
5cac62ac 6104 pr_notice("warning: userspace override of important firmware LEDs is enabled\n");
a4d5effc 6105#endif
f21179a4 6106 return 0;
78f81cc4
BD		 6107}
6108
4fa6811b
HMH		 6109#define str_led_status(s) \
6110 ((s) == TPACPI_LED_OFF ? "off" : \
6111 ((s) == TPACPI_LED_ON ? "on" : "blinking"))
78f81cc4 6112
887965e6 6113static int led_read(struct seq_file *m)
1da177e4 6114{
78f81cc4 6115 if (!led_supported) {
887965e6
AD		 6116 seq_printf(m, "status:\t\tnot supported\n");
6117 return 0;
78f81cc4 6118 }
887965e6 6119 seq_printf(m, "status:\t\tsupported\n");
78f81cc4 6120
efa27145 6121 if (led_supported == TPACPI_LED_570) {
78f81cc4
BD		 6122 /* 570 */
6123 int i, status;
6124 for (i = 0; i < 8; i++) {
4fa6811b
HMH		 6125 status = led_get_status(i);
6126 if (status < 0)
78f81cc4 6127 return -EIO;
887965e6 6128 seq_printf(m, "%d:\t\t%s\n",
4fa6811b 6129 i, str_led_status(status));
78f81cc4
BD		 6130 }
6131 }
6132
5cac62ac 6133 seq_printf(m, "commands:\t<led> on, <led> off, <led> blink (<led> is 0-15)\n");
1da177e4 6134
887965e6 6135 return 0;
1da177e4
LT		 6136}
6137
78f81cc4 6138static int led_write(char *buf)
1da177e4
LT		 6139{
6140 char *cmd;
4fa6811b
HMH		 6141 int led, rc;
6142 enum led_status_t s;
78f81cc4
BD		 6143
6144 if (!led_supported)
6145 return -ENODEV;
1da177e4 6146
be51bd45 6147 while ((cmd = strsep(&buf, ","))) {
edf2d778 6148 if (sscanf(cmd, "%d", &led) != 1)
1da177e4
LT		 6149 return -EINVAL;
6150
41f80046
AS		 6151 if (led < 0 || led > (TPACPI_LED_NUMLEDS - 1))
6152 return -ENODEV;
6153
6154 if (tpacpi_leds[led].led < 0)
edf2d778
AL		 6155 return -ENODEV;
6156
78f81cc4 6157 if (strstr(cmd, "off")) {
4fa6811b 6158 s = TPACPI_LED_OFF;
1da177e4 6159 } else if (strstr(cmd, "on")) {
4fa6811b 6160 s = TPACPI_LED_ON;
78f81cc4 6161 } else if (strstr(cmd, "blink")) {
4fa6811b 6162 s = TPACPI_LED_BLINK;
78f81cc4 6163 } else {
4fa6811b 6164 return -EINVAL;
78f81cc4 6165 }
4fa6811b
HMH		 6166
6167 rc = led_set_status(led, s);
6168 if (rc < 0)
6169 return rc;
78f81cc4
BD		 6170 }
6171
6172 return 0;
6173}
6174
a5763f22
HMH		 6175static struct ibm_struct led_driver_data = {
6176 .name = "led",
6177 .read = led_read,
6178 .write = led_write,
af116101 6179 .exit = led_exit,
a5763f22
HMH		 6180};
6181
56b6aeb0
HMH		 6182/*************************************************************************
6183 * Beep subdriver
6184 */
6185
e0c7dfe7 6186TPACPI_HANDLE(beep, ec, "BEEP"); /* all except R30, R31 */
56b6aeb0 6187
60201732
HMH		 6188#define TPACPI_BEEP_Q1 0x0001
6189
6190static const struct tpacpi_quirk beep_quirk_table[] __initconst = {
6191 TPACPI_Q_IBM('I', 'M', TPACPI_BEEP_Q1), /* 570 */
6192 TPACPI_Q_IBM('I', 'U', TPACPI_BEEP_Q1), /* 570E - unverified */
6193};
6194
a5763f22 6195static int __init beep_init(struct ibm_init_struct *iibm)
5fba344c 6196{
60201732
HMH		 6197 unsigned long quirks;
6198
fe08bc4b
HMH		 6199 vdbg_printk(TPACPI_DBG_INIT, "initializing beep subdriver\n");
6200
e0c7dfe7 6201 TPACPI_ACPIHANDLE_INIT(beep);
5fba344c 6202
fe08bc4b
HMH		 6203 vdbg_printk(TPACPI_DBG_INIT, "beep is %s\n",
6204 str_supported(beep_handle != NULL));
6205
60201732
HMH		 6206 quirks = tpacpi_check_quirks(beep_quirk_table,
6207 ARRAY_SIZE(beep_quirk_table));
6208
6209 tp_features.beep_needs_two_args = !!(quirks & TPACPI_BEEP_Q1);
6210
72a979f0 6211 return (beep_handle) ? 0 : 1;
5fba344c
HMH		 6212}
6213
887965e6 6214static int beep_read(struct seq_file *m)
78f81cc4 6215{
78f81cc4 6216 if (!beep_handle)
887965e6 6217 seq_printf(m, "status:\t\tnot supported\n");
78f81cc4 6218 else {
887965e6
AD		 6219 seq_printf(m, "status:\t\tsupported\n");
6220 seq_printf(m, "commands:\t<cmd> (<cmd> is 0-17)\n");
78f81cc4
BD		 6221 }
6222
887965e6 6223 return 0;
78f81cc4
BD		 6224}
6225
6226static int beep_write(char *buf)
6227{
6228 char *cmd;
6229 int beep_cmd;
6230
6231 if (!beep_handle)
6232 return -ENODEV;
6233
be51bd45 6234 while ((cmd = strsep(&buf, ","))) {
78f81cc4
BD		 6235 if (sscanf(cmd, "%u", &beep_cmd) == 1 &&
6236 beep_cmd >= 0 && beep_cmd <= 17) {
6237 /* beep_cmd set */
6238 } else
6239 return -EINVAL;
60201732
HMH		 6240 if (tp_features.beep_needs_two_args) {
6241 if (!acpi_evalf(beep_handle, NULL, NULL, "vdd",
6242 beep_cmd, 0))
6243 return -EIO;
6244 } else {
6245 if (!acpi_evalf(beep_handle, NULL, NULL, "vd",
6246 beep_cmd))
6247 return -EIO;
6248 }
78f81cc4
BD		 6249 }
6250
6251 return 0;
6252}
6253
a5763f22
HMH		 6254static struct ibm_struct beep_driver_data = {
6255 .name = "beep",
6256 .read = beep_read,
6257 .write = beep_write,
6258};
6259
56b6aeb0
HMH		 6260/*************************************************************************
6261 * Thermal subdriver
6262 */
78f81cc4 6263
f74a27d4
HMH		 6264enum thermal_access_mode {
6265 TPACPI_THERMAL_NONE = 0, /* No thermal support */
6266 TPACPI_THERMAL_ACPI_TMP07, /* Use ACPI TMP0-7 */
6267 TPACPI_THERMAL_ACPI_UPDT, /* Use ACPI TMP0-7 with UPDT */
6268 TPACPI_THERMAL_TPEC_8, /* Use ACPI EC regs, 8 sensors */
6269 TPACPI_THERMAL_TPEC_16, /* Use ACPI EC regs, 16 sensors */
6270};
6271
6272enum { /* TPACPI_THERMAL_TPEC_* */
6273 TP_EC_THERMAL_TMP0 = 0x78, /* ACPI EC regs TMP 0..7 */
6274 TP_EC_THERMAL_TMP8 = 0xC0, /* ACPI EC regs TMP 8..15 */
6759e18e 6275 TP_EC_FUNCREV = 0xEF, /* ACPI EC Functional revision */
f74a27d4 6276 TP_EC_THERMAL_TMP_NA = -128, /* ACPI EC sensor not available */
9ebd9e83
HMH		 6277
6278 TPACPI_THERMAL_SENSOR_NA = -128000, /* Sensor not available */
f74a27d4
HMH		 6279};
6280
9ebd9e83 6281
f74a27d4
HMH		 6282#define TPACPI_MAX_THERMAL_SENSORS 16 /* Max thermal sensors supported */
6283struct ibm_thermal_sensors_struct {
6284 s32 temp[TPACPI_MAX_THERMAL_SENSORS];
6285};
6286
a26f878a 6287static enum thermal_access_mode thermal_read_mode;
00cc4263
HG		 6288static const struct attribute_group *thermal_attr_group;
6289static bool thermal_use_labels;
78f81cc4 6290
b21a15f6
HMH		 6291/* idx is zero-based */
6292static int thermal_get_sensor(int idx, s32 *value)
6293{
6294 int t;
6295 s8 tmp;
6296 char tmpi[5];
6297
6298 t = TP_EC_THERMAL_TMP0;
6299
6300 switch (thermal_read_mode) {
6301#if TPACPI_MAX_THERMAL_SENSORS >= 16
6302 case TPACPI_THERMAL_TPEC_16:
6303 if (idx >= 8 && idx <= 15) {
6304 t = TP_EC_THERMAL_TMP8;
6305 idx -= 8;
6306 }
b21a15f6 6307#endif
df561f66 6308 fallthrough;
b21a15f6
HMH		 6309 case TPACPI_THERMAL_TPEC_8:
6310 if (idx <= 7) {
6311 if (!acpi_ec_read(t + idx, &tmp))
6312 return -EIO;
6313 *value = tmp * 1000;
6314 return 0;
6315 }
6316 break;
6317
6318 case TPACPI_THERMAL_ACPI_UPDT:
6319 if (idx <= 7) {
6320 snprintf(tmpi, sizeof(tmpi), "TMP%c", '0' + idx);
6321 if (!acpi_evalf(ec_handle, NULL, "UPDT", "v"))
6322 return -EIO;
6323 if (!acpi_evalf(ec_handle, &t, tmpi, "d"))
6324 return -EIO;
6325 *value = (t - 2732) * 100;
6326 return 0;
6327 }
6328 break;
6329
6330 case TPACPI_THERMAL_ACPI_TMP07:
6331 if (idx <= 7) {
6332 snprintf(tmpi, sizeof(tmpi), "TMP%c", '0' + idx);
6333 if (!acpi_evalf(ec_handle, &t, tmpi, "d"))
6334 return -EIO;
6335 if (t > 127 || t < -127)
6336 t = TP_EC_THERMAL_TMP_NA;
6337 *value = t * 1000;
6338 return 0;
6339 }
6340 break;
6341
6342 case TPACPI_THERMAL_NONE:
6343 default:
6344 return -ENOSYS;
6345 }
6346
6347 return -EINVAL;
6348}
6349
6350static int thermal_get_sensors(struct ibm_thermal_sensors_struct *s)
6351{
6352 int res, i;
6353 int n;
6354
6355 n = 8;
6356 i = 0;
6357
6358 if (!s)
6359 return -EINVAL;
6360
6361 if (thermal_read_mode == TPACPI_THERMAL_TPEC_16)
6362 n = 16;
6363
35ff8b9f 6364 for (i = 0 ; i < n; i++) {
b21a15f6
HMH		 6365 res = thermal_get_sensor(i, &s->temp[i]);
6366 if (res)
6367 return res;
6368 }
6369
6370 return n;
6371}
f74a27d4 6372
9ebd9e83
HMH		 6373static void thermal_dump_all_sensors(void)
6374{
6375 int n, i;
6376 struct ibm_thermal_sensors_struct t;
6377
6378 n = thermal_get_sensors(&t);
6379 if (n <= 0)
6380 return;
6381
0978e012 6382 pr_notice("temperatures (Celsius):");
9ebd9e83
HMH		 6383
6384 for (i = 0; i < n; i++) {
6385 if (t.temp[i] != TPACPI_THERMAL_SENSOR_NA)
0978e012 6386 pr_cont(" %d", (int)(t.temp[i] / 1000));
9ebd9e83 6387 else
0978e012 6388 pr_cont(" N/A");
9ebd9e83
HMH		 6389 }
6390
0978e012 6391 pr_cont("\n");
9ebd9e83
HMH		 6392}
6393
2c37aa4e
HMH		 6394/* sysfs temp##_input -------------------------------------------------- */
6395
6396static ssize_t thermal_temp_input_show(struct device *dev,
6397 struct device_attribute *attr,
6398 char *buf)
6399{
6400 struct sensor_device_attribute *sensor_attr =
6401 to_sensor_dev_attr(attr);
6402 int idx = sensor_attr->index;
6403 s32 value;
6404 int res;
6405
6406 res = thermal_get_sensor(idx, &value);
6407 if (res)
6408 return res;
9ebd9e83 6409 if (value == TPACPI_THERMAL_SENSOR_NA)
2c37aa4e
HMH		 6410 return -ENXIO;
6411
6412 return snprintf(buf, PAGE_SIZE, "%d\n", value);
6413}
6414
6415#define THERMAL_SENSOR_ATTR_TEMP(_idxA, _idxB) \
35ff8b9f
HMH		 6416 SENSOR_ATTR(temp##_idxA##_input, S_IRUGO, \
6417 thermal_temp_input_show, NULL, _idxB)
2c37aa4e
HMH		 6418
6419static struct sensor_device_attribute sensor_dev_attr_thermal_temp_input[] = {
6420 THERMAL_SENSOR_ATTR_TEMP(1, 0),
6421 THERMAL_SENSOR_ATTR_TEMP(2, 1),
6422 THERMAL_SENSOR_ATTR_TEMP(3, 2),
6423 THERMAL_SENSOR_ATTR_TEMP(4, 3),
6424 THERMAL_SENSOR_ATTR_TEMP(5, 4),
6425 THERMAL_SENSOR_ATTR_TEMP(6, 5),
6426 THERMAL_SENSOR_ATTR_TEMP(7, 6),
6427 THERMAL_SENSOR_ATTR_TEMP(8, 7),
6428 THERMAL_SENSOR_ATTR_TEMP(9, 8),
6429 THERMAL_SENSOR_ATTR_TEMP(10, 9),
6430 THERMAL_SENSOR_ATTR_TEMP(11, 10),
6431 THERMAL_SENSOR_ATTR_TEMP(12, 11),
6432 THERMAL_SENSOR_ATTR_TEMP(13, 12),
6433 THERMAL_SENSOR_ATTR_TEMP(14, 13),
6434 THERMAL_SENSOR_ATTR_TEMP(15, 14),
6435 THERMAL_SENSOR_ATTR_TEMP(16, 15),
6436};
6437
6438#define THERMAL_ATTRS(X) \
6439 &sensor_dev_attr_thermal_temp_input[X].dev_attr.attr
6440
6441static struct attribute *thermal_temp_input_attr[] = {
6442 THERMAL_ATTRS(8),
6443 THERMAL_ATTRS(9),
6444 THERMAL_ATTRS(10),
6445 THERMAL_ATTRS(11),
6446 THERMAL_ATTRS(12),
6447 THERMAL_ATTRS(13),
6448 THERMAL_ATTRS(14),
6449 THERMAL_ATTRS(15),
6450 THERMAL_ATTRS(0),
6451 THERMAL_ATTRS(1),
6452 THERMAL_ATTRS(2),
6453 THERMAL_ATTRS(3),
6454 THERMAL_ATTRS(4),
6455 THERMAL_ATTRS(5),
6456 THERMAL_ATTRS(6),
6457 THERMAL_ATTRS(7),
6458 NULL
6459};
6460
6461static const struct attribute_group thermal_temp_input16_group = {
6462 .attrs = thermal_temp_input_attr
6463};
6464
6465static const struct attribute_group thermal_temp_input8_group = {
6466 .attrs = &thermal_temp_input_attr[8]
6467};
6468
6469#undef THERMAL_SENSOR_ATTR_TEMP
6470#undef THERMAL_ATTRS
6471
00cc4263
HG		 6472static ssize_t temp1_label_show(struct device *dev, struct device_attribute *attr, char *buf)
6473{
6474 return sysfs_emit(buf, "CPU\n");
6475}
6476static DEVICE_ATTR_RO(temp1_label);
6477
6478static ssize_t temp2_label_show(struct device *dev, struct device_attribute *attr, char *buf)
6479{
6480 return sysfs_emit(buf, "GPU\n");
6481}
6482static DEVICE_ATTR_RO(temp2_label);
6483
6484static struct attribute *temp_label_attributes[] = {
6485 &dev_attr_temp1_label.attr,
6486 &dev_attr_temp2_label.attr,
6487 NULL
6488};
6489
6490static const struct attribute_group temp_label_attr_group = {
6491 .attrs = temp_label_attributes,
6492};
6493
2c37aa4e
HMH		 6494/* --------------------------------------------------------------------- */
6495
a5763f22 6496static int __init thermal_init(struct ibm_init_struct *iibm)
78f81cc4 6497{
6759e18e 6498 u8 t, ta1, ta2, ver = 0;
60eb0b35 6499 int i;
5fba344c 6500 int acpi_tmp7;
2c37aa4e 6501 int res;
5fba344c 6502
fe08bc4b
HMH		 6503 vdbg_printk(TPACPI_DBG_INIT, "initializing thermal subdriver\n");
6504
5fba344c 6505 acpi_tmp7 = acpi_evalf(ec_handle, NULL, "TMP7", "qv");
60eb0b35 6506
3d6f99ca 6507 if (thinkpad_id.ec_model) {
60eb0b35
HMH		 6508 /*
6509 * Direct EC access mode: sensors at registers
6510 * 0x78-0x7F, 0xC0-0xC7. Registers return 0x00 for
6511 * non-implemented, thermal sensors return 0x80 when
6512 * not available
6759e18e
MP		 6513 * The above rule is unfortunately flawed. This has been seen with
6514 * 0xC2 (power supply ID) causing thermal control problems.
6515 * The EC version can be determined by offset 0xEF and at least for
6516 * version 3 the Lenovo firmware team confirmed that registers 0xC0-0xC7
6517 * are not thermal registers.
60eb0b35 6518 */
6759e18e
MP		 6519 if (!acpi_ec_read(TP_EC_FUNCREV, &ver))
6520 pr_warn("Thinkpad ACPI EC unable to access EC version\n");
78f81cc4 6521
60eb0b35
HMH		 6522 ta1 = ta2 = 0;
6523 for (i = 0; i < 8; i++) {
04cc862c 6524 if (acpi_ec_read(TP_EC_THERMAL_TMP0 + i, &t)) {
60eb0b35
HMH		 6525 ta1 |= t;
6526 } else {
6527 ta1 = 0;
6528 break;
6529 }
6759e18e
MP		 6530 if (ver < 3) {
6531 if (acpi_ec_read(TP_EC_THERMAL_TMP8 + i, &t)) {
6532 ta2 |= t;
6533 } else {
6534 ta1 = 0;
6535 break;
6536 }
60eb0b35
HMH		 6537 }
6538 }
6539 if (ta1 == 0) {
6540 /* This is sheer paranoia, but we handle it anyway */
6541 if (acpi_tmp7) {
5cac62ac 6542 pr_err("ThinkPad ACPI EC access misbehaving, falling back to ACPI TMPx access mode\n");
efa27145 6543 thermal_read_mode = TPACPI_THERMAL_ACPI_TMP07;
60eb0b35 6544 } else {
5cac62ac 6545 pr_err("ThinkPad ACPI EC access misbehaving, disabling thermal sensors access\n");
efa27145 6546 thermal_read_mode = TPACPI_THERMAL_NONE;
60eb0b35
HMH		 6547 }
6548 } else {
00cc4263 6549 if (ver >= 3) {
6759e18e 6550 thermal_read_mode = TPACPI_THERMAL_TPEC_8;
00cc4263
HG		 6551 thermal_use_labels = true;
6552 } else {
6759e18e
MP		 6553 thermal_read_mode =
6554 (ta2 != 0) ?
6555 TPACPI_THERMAL_TPEC_16 : TPACPI_THERMAL_TPEC_8;
00cc4263 6556 }
60eb0b35
HMH		 6557 }
6558 } else if (acpi_tmp7) {
e28393c0
HMH		 6559 if (tpacpi_is_ibm() &&
6560 acpi_evalf(ec_handle, NULL, "UPDT", "qv")) {
a26f878a 6561 /* 600e/x, 770e, 770x */
efa27145 6562 thermal_read_mode = TPACPI_THERMAL_ACPI_UPDT;
a26f878a 6563 } else {
e28393c0 6564 /* IBM/LENOVO DSDT EC.TMPx access, max 8 sensors */
efa27145 6565 thermal_read_mode = TPACPI_THERMAL_ACPI_TMP07;
a26f878a
HMH		 6566 }
6567 } else {
6568 /* temperatures not supported on 570, G4x, R30, R31, R32 */
efa27145 6569 thermal_read_mode = TPACPI_THERMAL_NONE;
a26f878a 6570 }
78f81cc4 6571
fe08bc4b
HMH		 6572 vdbg_printk(TPACPI_DBG_INIT, "thermal is %s, mode %d\n",
6573 str_supported(thermal_read_mode != TPACPI_THERMAL_NONE),
6574 thermal_read_mode);
6575
35ff8b9f 6576 switch (thermal_read_mode) {
2c37aa4e 6577 case TPACPI_THERMAL_TPEC_16:
00cc4263 6578 thermal_attr_group = &thermal_temp_input16_group;
2c37aa4e
HMH		 6579 break;
6580 case TPACPI_THERMAL_TPEC_8:
6581 case TPACPI_THERMAL_ACPI_TMP07:
6582 case TPACPI_THERMAL_ACPI_UPDT:
00cc4263 6583 thermal_attr_group = &thermal_temp_input8_group;
2c37aa4e
HMH		 6584 break;
6585 case TPACPI_THERMAL_NONE:
6586 default:
6587 return 1;
6588 }
6589
00cc4263
HG		 6590 res = sysfs_create_group(&tpacpi_hwmon->kobj, thermal_attr_group);
6591 if (res)
6592 return res;
6593
6594 if (thermal_use_labels) {
6595 res = sysfs_create_group(&tpacpi_hwmon->kobj, &temp_label_attr_group);
6596 if (res) {
6597 sysfs_remove_group(&tpacpi_hwmon->kobj, thermal_attr_group);
6598 return res;
6599 }
6600 }
6601
2c37aa4e
HMH		 6602 return 0;
6603}
6604
6605static void thermal_exit(void)
6606{
00cc4263
HG		 6607 if (thermal_attr_group)
6608 sysfs_remove_group(&tpacpi_hwmon->kobj, thermal_attr_group);
6609
6610 if (thermal_use_labels)
6611 sysfs_remove_group(&tpacpi_hwmon->kobj, &temp_label_attr_group);
78f81cc4
BD		 6612}
6613
887965e6 6614static int thermal_read(struct seq_file *m)
a26f878a 6615{
a26f878a
HMH		 6616 int n, i;
6617 struct ibm_thermal_sensors_struct t;
6618
6619 n = thermal_get_sensors(&t);
6620 if (unlikely(n < 0))
6621 return n;
6622
887965e6 6623 seq_printf(m, "temperatures:\t");
a26f878a
HMH		 6624
6625 if (n > 0) {
6626 for (i = 0; i < (n - 1); i++)
887965e6
AD		 6627 seq_printf(m, "%d ", t.temp[i] / 1000);
6628 seq_printf(m, "%d\n", t.temp[i] / 1000);
a26f878a 6629 } else
887965e6 6630 seq_printf(m, "not supported\n");
78f81cc4 6631
887965e6 6632 return 0;
78f81cc4
BD		 6633}
6634
a5763f22
HMH		 6635static struct ibm_struct thermal_driver_data = {
6636 .name = "thermal",
6637 .read = thermal_read,
2c37aa4e 6638 .exit = thermal_exit,
a5763f22
HMH		 6639};
6640
56b6aeb0
HMH		 6641/*************************************************************************
6642 * Backlight/brightness subdriver
6643 */
6644
f74a27d4
HMH		 6645#define TPACPI_BACKLIGHT_DEV_NAME "thinkpad_screen"
6646
0e501834
HMH		 6647/*
6648 * ThinkPads can read brightness from two places: EC HBRV (0x31), or
6649 * CMOS NVRAM byte 0x5E, bits 0-3.
6650 *
6651 * EC HBRV (0x31) has the following layout
6652 * Bit 7: unknown function
6653 * Bit 6: unknown function
6654 * Bit 5: Z: honour scale changes, NZ: ignore scale changes
6655 * Bit 4: must be set to zero to avoid problems
6656 * Bit 3-0: backlight brightness level
6657 *
6658 * brightness_get_raw returns status data in the HBRV layout
d7880f10
HMH		 6659 *
6660 * WARNING: The X61 has been verified to use HBRV for something else, so
6661 * this should be used _only_ on IBM ThinkPads, and maybe with some careful
6662 * testing on the very early *60 Lenovo models...
0e501834
HMH		 6663 */
6664
e11aecf1
HMH		 6665enum {
6666 TP_EC_BACKLIGHT = 0x31,
6667
6668 /* TP_EC_BACKLIGHT bitmasks */
6669 TP_EC_BACKLIGHT_LVLMSK = 0x1F,
6670 TP_EC_BACKLIGHT_CMDMSK = 0xE0,
6671 TP_EC_BACKLIGHT_MAPSW = 0x20,
6672};
6673
0e501834
HMH		 6674enum tpacpi_brightness_access_mode {
6675 TPACPI_BRGHT_MODE_AUTO = 0, /* Not implemented yet */
6676 TPACPI_BRGHT_MODE_EC, /* EC control */
6677 TPACPI_BRGHT_MODE_UCMS_STEP, /* UCMS step-based control */
6678 TPACPI_BRGHT_MODE_ECNVRAM, /* EC control w/ NVRAM store */
6679 TPACPI_BRGHT_MODE_MAX
6680};
6681
94954cc6 6682static struct backlight_device *ibm_backlight_device;
0e501834
HMH		 6683
6684static enum tpacpi_brightness_access_mode brightness_mode =
6685 TPACPI_BRGHT_MODE_MAX;
6686
f74a27d4
HMH		 6687static unsigned int brightness_enable = 2; /* 2 = auto, 0 = no, 1 = yes */
6688
b21a15f6 6689static struct mutex brightness_mutex;
56b6aeb0 6690
0e501834
HMH		 6691/* NVRAM brightness access,
6692 * call with brightness_mutex held! */
6693static unsigned int tpacpi_brightness_nvram_get(void)
b21a15f6 6694{
0e501834 6695 u8 lnvram;
b21a15f6 6696
0e501834
HMH		 6697 lnvram = (nvram_read_byte(TP_NVRAM_ADDR_BRIGHTNESS)
6698 & TP_NVRAM_MASK_LEVEL_BRIGHTNESS)
6699 >> TP_NVRAM_POS_LEVEL_BRIGHTNESS;
77775838 6700 lnvram &= bright_maxlvl;
0e501834
HMH		 6701
6702 return lnvram;
6703}
6704
6705static void tpacpi_brightness_checkpoint_nvram(void)
6706{
6707 u8 lec = 0;
6708 u8 b_nvram;
6709
6710 if (brightness_mode != TPACPI_BRGHT_MODE_ECNVRAM)
6711 return;
6712
6713 vdbg_printk(TPACPI_DBG_BRGHT,
6714 "trying to checkpoint backlight level to NVRAM...\n");
6715
6716 if (mutex_lock_killable(&brightness_mutex) < 0)
6717 return;
6718
6719 if (unlikely(!acpi_ec_read(TP_EC_BACKLIGHT, &lec)))
6720 goto unlock;
6721 lec &= TP_EC_BACKLIGHT_LVLMSK;
6722 b_nvram = nvram_read_byte(TP_NVRAM_ADDR_BRIGHTNESS);
6723
6724 if (lec != ((b_nvram & TP_NVRAM_MASK_LEVEL_BRIGHTNESS)
6725 >> TP_NVRAM_POS_LEVEL_BRIGHTNESS)) {
6726 /* NVRAM needs update */
6727 b_nvram &= ~(TP_NVRAM_MASK_LEVEL_BRIGHTNESS <<
6728 TP_NVRAM_POS_LEVEL_BRIGHTNESS);
6729 b_nvram |= lec;
6730 nvram_write_byte(b_nvram, TP_NVRAM_ADDR_BRIGHTNESS);
6731 dbg_printk(TPACPI_DBG_BRGHT,
6732 "updated NVRAM backlight level to %u (0x%02x)\n",
6733 (unsigned int) lec, (unsigned int) b_nvram);
6734 } else
6735 vdbg_printk(TPACPI_DBG_BRGHT,
6736 "NVRAM backlight level already is %u (0x%02x)\n",
6737 (unsigned int) lec, (unsigned int) b_nvram);
6738
6739unlock:
6740 mutex_unlock(&brightness_mutex);
6741}
6742
6743
6744/* call with brightness_mutex held! */
6745static int tpacpi_brightness_get_raw(int *status)
6746{
6747 u8 lec = 0;
6748
6749 switch (brightness_mode) {
6750 case TPACPI_BRGHT_MODE_UCMS_STEP:
6751 *status = tpacpi_brightness_nvram_get();
6752 return 0;
6753 case TPACPI_BRGHT_MODE_EC:
6754 case TPACPI_BRGHT_MODE_ECNVRAM:
6755 if (unlikely(!acpi_ec_read(TP_EC_BACKLIGHT, &lec)))
2d5e94d7 6756 return -EIO;
0e501834
HMH		 6757 *status = lec;
6758 return 0;
6759 default:
6760 return -ENXIO;
b21a15f6 6761 }
0e501834
HMH		 6762}
6763
6764/* call with brightness_mutex held! */
6765/* do NOT call with illegal backlight level value */
6766static int tpacpi_brightness_set_ec(unsigned int value)
6767{
6768 u8 lec = 0;
6769
6770 if (unlikely(!acpi_ec_read(TP_EC_BACKLIGHT, &lec)))
6771 return -EIO;
6772
6773 if (unlikely(!acpi_ec_write(TP_EC_BACKLIGHT,
6774 (lec & TP_EC_BACKLIGHT_CMDMSK) |
6775 (value & TP_EC_BACKLIGHT_LVLMSK))))
6776 return -EIO;
6777
6778 return 0;
6779}
6780
6781/* call with brightness_mutex held! */
6782static int tpacpi_brightness_set_ucmsstep(unsigned int value)
6783{
6784 int cmos_cmd, inc;
6785 unsigned int current_value, i;
6786
6787 current_value = tpacpi_brightness_nvram_get();
6788
6789 if (value == current_value)
6790 return 0;
6791
6792 cmos_cmd = (value > current_value) ?
6793 TP_CMOS_BRIGHTNESS_UP :
6794 TP_CMOS_BRIGHTNESS_DOWN;
6795 inc = (value > current_value) ? 1 : -1;
6796
6797 for (i = current_value; i != value; i += inc)
6798 if (issue_thinkpad_cmos_command(cmos_cmd))
6799 return -EIO;
b21a15f6 6800
e11aecf1 6801 return 0;
b21a15f6
HMH		 6802}
6803
6804/* May return EINTR which can always be mapped to ERESTARTSYS */
0e501834 6805static int brightness_set(unsigned int value)
b21a15f6 6806{
0e501834 6807 int res;
b21a15f6 6808
bd3c7b9e 6809 if (value > bright_maxlvl)
b21a15f6
HMH		 6810 return -EINVAL;
6811
0e501834
HMH		 6812 vdbg_printk(TPACPI_DBG_BRGHT,
6813 "set backlight level to %d\n", value);
6814
7646ea88 6815 res = mutex_lock_killable(&brightness_mutex);
b21a15f6
HMH		 6816 if (res < 0)
6817 return res;
6818
0e501834
HMH		 6819 switch (brightness_mode) {
6820 case TPACPI_BRGHT_MODE_EC:
6821 case TPACPI_BRGHT_MODE_ECNVRAM:
6822 res = tpacpi_brightness_set_ec(value);
6823 break;
6824 case TPACPI_BRGHT_MODE_UCMS_STEP:
6825 res = tpacpi_brightness_set_ucmsstep(value);
6826 break;
6827 default:
6828 res = -ENXIO;
b21a15f6
HMH		 6829 }
6830
b21a15f6
HMH		 6831 mutex_unlock(&brightness_mutex);
6832 return res;
6833}
6834
6835/* sysfs backlight class ----------------------------------------------- */
6836
6837static int brightness_update_status(struct backlight_device *bd)
6838{
0e501834 6839 unsigned int level =
b21a15f6
HMH		 6840 (bd->props.fb_blank == FB_BLANK_UNBLANK &&
6841 bd->props.power == FB_BLANK_UNBLANK) ?
0e501834
HMH		 6842 bd->props.brightness : 0;
6843
6844 dbg_printk(TPACPI_DBG_BRGHT,
6845 "backlight: attempt to set level to %d\n",
6846 level);
6847
6848 /* it is the backlight class's job (caller) to handle
6849 * EINTR and other errors properly */
6850 return brightness_set(level);
b21a15f6
HMH		 6851}
6852
e11aecf1 6853static int brightness_get(struct backlight_device *bd)
a3f104c0 6854{
e11aecf1 6855 int status, res;
a3f104c0 6856
0e501834 6857 res = mutex_lock_killable(&brightness_mutex);
e11aecf1 6858 if (res < 0)
0e501834
HMH		 6859 return 0;
6860
6861 res = tpacpi_brightness_get_raw(&status);
6862
6863 mutex_unlock(&brightness_mutex);
6864
6865 if (res < 0)
6866 return 0;
e11e211a 6867
e11aecf1 6868 return status & TP_EC_BACKLIGHT_LVLMSK;
e11e211a
HMH		 6869}
6870
347a2686
HMH		 6871static void tpacpi_brightness_notify_change(void)
6872{
6873 backlight_force_update(ibm_backlight_device,
6874 BACKLIGHT_UPDATE_HOTKEY);
6875}
6876
acc2472e 6877static const struct backlight_ops ibm_backlight_data = {
35ff8b9f
HMH		 6878 .get_brightness = brightness_get,
6879 .update_status = brightness_update_status,
56b6aeb0 6880};
e11e211a 6881
b21a15f6 6882/* --------------------------------------------------------------------- */
e11e211a 6883
122f2672
HMH		 6884/*
6885 * Call _BCL method of video device. On some ThinkPads this will
6886 * switch the firmware to the ACPI brightness control mode.
6887 */
6888
77775838
HMH		 6889static int __init tpacpi_query_bcl_levels(acpi_handle handle)
6890{
6891 struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
6892 union acpi_object *obj;
46445b6b 6893 struct acpi_device *device, *child;
77775838
HMH		 6894 int rc;
6895
46445b6b
AL		 6896 if (acpi_bus_get_device(handle, &device))
6897 return 0;
6898
6899 rc = 0;
6900 list_for_each_entry(child, &device->children, node) {
6901 acpi_status status = acpi_evaluate_object(child->handle, "_BCL",
6902 NULL, &buffer);
720ef73d
AM		 6903 if (ACPI_FAILURE(status)) {
6904 buffer.length = ACPI_ALLOCATE_BUFFER;
46445b6b 6905 continue;
720ef73d 6906 }
46445b6b 6907
77775838
HMH		 6908 obj = (union acpi_object *)buffer.pointer;
6909 if (!obj || (obj->type != ACPI_TYPE_PACKAGE)) {
0978e012 6910 pr_err("Unknown _BCL data, please report this to %s\n",
46445b6b 6911 TPACPI_MAIL);
77775838
HMH		 6912 rc = 0;
6913 } else {
6914 rc = obj->package.count;
6915 }
46445b6b 6916 break;
77775838
HMH		 6917 }
6918
6919 kfree(buffer.pointer);
6920 return rc;
6921}
6922
77775838
HMH		 6923
6924/*
6925 * Returns 0 (no ACPI _BCL or _BCL invalid), or size of brightness map
6926 */
6927static unsigned int __init tpacpi_check_std_acpi_brightness_support(void)
6928{
122f2672 6929 acpi_handle video_device;
77775838 6930 int bcl_levels = 0;
77775838 6931
46445b6b 6932 tpacpi_acpi_handle_locate("video", NULL, &video_device);
122f2672
HMH		 6933 if (video_device)
6934 bcl_levels = tpacpi_query_bcl_levels(video_device);
77775838 6935
122f2672 6936 tp_features.bright_acpimode = (bcl_levels > 0);
77775838 6937
122f2672 6938 return (bcl_levels > 2) ? (bcl_levels - 2) : 0;
77775838
HMH		 6939}
6940
59fe4fe3
HMH		 6941/*
6942 * These are only useful for models that have only one possibility
6943 * of GPU. If the BIOS model handles both ATI and Intel, don't use
6944 * these quirks.
6945 */
6946#define TPACPI_BRGHT_Q_NOEC 0x0001 /* Must NOT use EC HBRV */
6947#define TPACPI_BRGHT_Q_EC 0x0002 /* Should or must use EC HBRV */
6948#define TPACPI_BRGHT_Q_ASK 0x8000 /* Ask for user report */
6949
6950static const struct tpacpi_quirk brightness_quirk_table[] __initconst = {
6951 /* Models with ATI GPUs known to require ECNVRAM mode */
6952 TPACPI_Q_IBM('1', 'Y', TPACPI_BRGHT_Q_EC), /* T43/p ATI */
6953
6da25bf5 6954 /* Models with ATI GPUs that can use ECNVRAM */
7d1894d8 6955 TPACPI_Q_IBM('1', 'R', TPACPI_BRGHT_Q_EC), /* R50,51 T40-42 */
59fe4fe3 6956 TPACPI_Q_IBM('1', 'Q', TPACPI_BRGHT_Q_ASK|TPACPI_BRGHT_Q_EC),
7d1894d8 6957 TPACPI_Q_IBM('7', '6', TPACPI_BRGHT_Q_EC), /* R52 */
59fe4fe3
HMH		 6958 TPACPI_Q_IBM('7', '8', TPACPI_BRGHT_Q_ASK|TPACPI_BRGHT_Q_EC),
6959
6da25bf5 6960 /* Models with Intel Extreme Graphics 2 */
7d1894d8 6961 TPACPI_Q_IBM('1', 'U', TPACPI_BRGHT_Q_NOEC), /* X40 */
a9f8eacc
HMH		 6962 TPACPI_Q_IBM('1', 'V', TPACPI_BRGHT_Q_ASK|TPACPI_BRGHT_Q_EC),
6963 TPACPI_Q_IBM('1', 'W', TPACPI_BRGHT_Q_ASK|TPACPI_BRGHT_Q_EC),
59fe4fe3
HMH		 6964
6965 /* Models with Intel GMA900 */
6966 TPACPI_Q_IBM('7', '0', TPACPI_BRGHT_Q_NOEC), /* T43, R52 */
6967 TPACPI_Q_IBM('7', '4', TPACPI_BRGHT_Q_NOEC), /* X41 */
6968 TPACPI_Q_IBM('7', '5', TPACPI_BRGHT_Q_NOEC), /* X41 Tablet */
6969};
6970
77775838
HMH		 6971/*
6972 * Returns < 0 for error, otherwise sets tp_features.bright_*
6973 * and bright_maxlvl.
6974 */
6975static void __init tpacpi_detect_brightness_capabilities(void)
6976{
6977 unsigned int b;
6978
6979 vdbg_printk(TPACPI_DBG_INIT,
6980 "detecting firmware brightness interface capabilities\n");
6981
6982 /* we could run a quirks check here (same table used by
6983 * brightness_init) if needed */
6984
6985 /*
6986 * We always attempt to detect acpi support, so as to switch
6987 * Lenovo Vista BIOS to ACPI brightness mode even if we are not
6988 * going to publish a backlight interface
6989 */
6990 b = tpacpi_check_std_acpi_brightness_support();
6991 switch (b) {
6992 case 16:
6993 bright_maxlvl = 15;
77775838
HMH		 6994 break;
6995 case 8:
6996 case 0:
6997 bright_maxlvl = 7;
77775838
HMH		 6998 break;
6999 default:
77775838
HMH		 7000 tp_features.bright_unkfw = 1;
7001 bright_maxlvl = b - 1;
7002 }
15c75626 7003 pr_debug("detected %u brightness levels\n", bright_maxlvl + 1);
77775838
HMH		 7004}
7005
a5763f22 7006static int __init brightness_init(struct ibm_init_struct *iibm)
56b6aeb0 7007{
a19a6ee6 7008 struct backlight_properties props;
56b6aeb0 7009 int b;
59fe4fe3 7010 unsigned long quirks;
56b6aeb0 7011
fe08bc4b
HMH		 7012 vdbg_printk(TPACPI_DBG_INIT, "initializing brightness subdriver\n");
7013
f432255e
HMH		 7014 mutex_init(&brightness_mutex);
7015
59fe4fe3
HMH		 7016 quirks = tpacpi_check_quirks(brightness_quirk_table,
7017 ARRAY_SIZE(brightness_quirk_table));
7018
77775838
HMH		 7019 /* tpacpi_detect_brightness_capabilities() must have run already */
7020
7021 /* if it is unknown, we don't handle it: it wouldn't be safe */
7022 if (tp_features.bright_unkfw)
7023 return 1;
2dba1b5d 7024
b5972796 7025 if (!brightness_enable) {
0e501834 7026 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_BRGHT,
5cac62ac 7027 "brightness support disabled by module parameter\n");
b5972796
HMH		 7028 return 1;
7029 }
7030
b33c6ce5 7031 if (acpi_video_get_backlight_type() != acpi_backlight_vendor) {
217f0963 7032 if (brightness_enable > 1) {
5cac62ac 7033 pr_info("Standard ACPI backlight interface available, not loading native one\n");
217f0963
HMH		 7034 return 1;
7035 } else if (brightness_enable == 1) {
5cac62ac 7036 pr_warn("Cannot enable backlight brightness support, ACPI is already handling it. Refer to the acpi_backlight kernel parameter.\n");
217f0963
HMH		 7037 return 1;
7038 }
46713aee
AM		 7039 } else if (!tp_features.bright_acpimode) {
7040 pr_notice("ACPI backlight interface not available\n");
7041 return 1;
217f0963
HMH		 7042 }
7043
46713aee
AM		 7044 pr_notice("ACPI native brightness control enabled\n");
7045
0e501834
HMH		 7046 /*
7047 * Check for module parameter bogosity, note that we
7048 * init brightness_mode to TPACPI_BRGHT_MODE_MAX in order to be
7049 * able to detect "unspecified"
7050 */
7051 if (brightness_mode > TPACPI_BRGHT_MODE_MAX)
7052 return -EINVAL;
24d3b774 7053
0e501834
HMH		 7054 /* TPACPI_BRGHT_MODE_AUTO not implemented yet, just use default */
7055 if (brightness_mode == TPACPI_BRGHT_MODE_AUTO ||
7056 brightness_mode == TPACPI_BRGHT_MODE_MAX) {
59fe4fe3
HMH		 7057 if (quirks & TPACPI_BRGHT_Q_EC)
7058 brightness_mode = TPACPI_BRGHT_MODE_ECNVRAM;
7059 else
0e501834 7060 brightness_mode = TPACPI_BRGHT_MODE_UCMS_STEP;
24d3b774 7061
0e501834 7062 dbg_printk(TPACPI_DBG_BRGHT,
59fe4fe3 7063 "driver auto-selected brightness_mode=%d\n",
0e501834
HMH		 7064 brightness_mode);
7065 }
24d3b774 7066
d7880f10 7067 /* Safety */
e28393c0 7068 if (!tpacpi_is_ibm() &&
d7880f10
HMH		 7069 (brightness_mode == TPACPI_BRGHT_MODE_ECNVRAM ||
7070 brightness_mode == TPACPI_BRGHT_MODE_EC))
7071 return -EINVAL;
7072
0e501834 7073 if (tpacpi_brightness_get_raw(&b) < 0)
24d3b774 7074 return 1;
56b6aeb0 7075
a19a6ee6 7076 memset(&props, 0, sizeof(struct backlight_properties));
bb7ca747 7077 props.type = BACKLIGHT_PLATFORM;
77775838
HMH		 7078 props.max_brightness = bright_maxlvl;
7079 props.brightness = b & TP_EC_BACKLIGHT_LVLMSK;
a19a6ee6
MG		 7080 ibm_backlight_device = backlight_device_register(TPACPI_BACKLIGHT_DEV_NAME,
7081 NULL, NULL,
7082 &ibm_backlight_data,
7083 &props);
56b6aeb0 7084 if (IS_ERR(ibm_backlight_device)) {
435c47e2
HMH		 7085 int rc = PTR_ERR(ibm_backlight_device);
7086 ibm_backlight_device = NULL;
0978e012 7087 pr_err("Could not register backlight device\n");
435c47e2 7088 return rc;
56b6aeb0 7089 }
0e501834
HMH		 7090 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_BRGHT,
7091 "brightness is supported\n");
56b6aeb0 7092
59fe4fe3 7093 if (quirks & TPACPI_BRGHT_Q_ASK) {
5cac62ac
AS		 7094 pr_notice("brightness: will use unverified default: brightness_mode=%d\n",
7095 brightness_mode);
7096 pr_notice("brightness: please report to %s whether it works well or not on your ThinkPad\n",
7097 TPACPI_MAIL);
59fe4fe3
HMH		 7098 }
7099
7d9745cf
HMH		 7100 /* Added by mistake in early 2007. Probably useless, but it could
7101 * be working around some unknown firmware problem where the value
7102 * read at startup doesn't match the real hardware state... so leave
7103 * it in place just in case */
56b6aeb0
HMH		 7104 backlight_update_status(ibm_backlight_device);
7105
347a2686 7106 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_BRGHT,
5cac62ac 7107 "brightness: registering brightness hotkeys as change notification\n");
347a2686
HMH		 7108 tpacpi_hotkey_driver_mask_set(hotkey_driver_mask
7109 | TP_ACPI_HKEY_BRGHTUP_MASK
3098064d 7110 | TP_ACPI_HKEY_BRGHTDWN_MASK);
56b6aeb0
HMH		 7111 return 0;
7112}
7113
fd3c3a42 7114static void brightness_suspend(void)
0e501834
HMH		 7115{
7116 tpacpi_brightness_checkpoint_nvram();
7117}
7118
7119static void brightness_shutdown(void)
7120{
7121 tpacpi_brightness_checkpoint_nvram();
7122}
7123
56b6aeb0
HMH		 7124static void brightness_exit(void)
7125{
7126 if (ibm_backlight_device) {
0e501834 7127 vdbg_printk(TPACPI_DBG_EXIT | TPACPI_DBG_BRGHT,
fe08bc4b 7128 "calling backlight_device_unregister()\n");
56b6aeb0 7129 backlight_device_unregister(ibm_backlight_device);
56b6aeb0 7130 }
0e501834
HMH		 7131
7132 tpacpi_brightness_checkpoint_nvram();
56b6aeb0
HMH		 7133}
7134
887965e6 7135static int brightness_read(struct seq_file *m)
56b6aeb0 7136{
56b6aeb0
HMH		 7137 int level;
7138
35ff8b9f
HMH		 7139 level = brightness_get(NULL);
7140 if (level < 0) {
887965e6 7141 seq_printf(m, "level:\t\tunreadable\n");
56b6aeb0 7142 } else {
887965e6
AD		 7143 seq_printf(m, "level:\t\t%d\n", level);
7144 seq_printf(m, "commands:\tup, down\n");
77775838
HMH		 7145 seq_printf(m, "commands:\tlevel <level> (<level> is 0-%d)\n",
7146 bright_maxlvl);
56b6aeb0
HMH		 7147 }
7148
887965e6 7149 return 0;
56b6aeb0
HMH		 7150}
7151
8acb0250
HM		 7152static int brightness_write(char *buf)
7153{
7154 int level;
4273af8d 7155 int rc;
1da177e4 7156 char *cmd;
1da177e4 7157
4273af8d
HMH		 7158 level = brightness_get(NULL);
7159 if (level < 0)
7160 return level;
78f81cc4 7161
be51bd45 7162 while ((cmd = strsep(&buf, ","))) {
78f81cc4 7163 if (strlencmp(cmd, "up") == 0) {
77775838 7164 if (level < bright_maxlvl)
4273af8d 7165 level++;
78f81cc4 7166 } else if (strlencmp(cmd, "down") == 0) {
4273af8d
HMH		 7167 if (level > 0)
7168 level--;
7169 } else if (sscanf(cmd, "level %d", &level) == 1 &&
77775838 7170 level >= 0 && level <= bright_maxlvl) {
4273af8d 7171 /* new level set */
78f81cc4
BD		 7172 } else
7173 return -EINVAL;
78f81cc4
BD		 7174 }
7175
0e501834
HMH		 7176 tpacpi_disclose_usertask("procfs brightness",
7177 "set level to %d\n", level);
7178
4273af8d
HMH		 7179 /*
7180 * Now we know what the final level should be, so we try to set it.
7181 * Doing it this way makes the syscall restartable in case of EINTR
7182 */
7183 rc = brightness_set(level);
347a2686
HMH		 7184 if (!rc && ibm_backlight_device)
7185 backlight_force_update(ibm_backlight_device,
7186 BACKLIGHT_UPDATE_SYSFS);
72a979f0 7187 return (rc == -EINTR) ? -ERESTARTSYS : rc;
78f81cc4
BD		 7188}
7189
a5763f22
HMH		 7190static struct ibm_struct brightness_driver_data = {
7191 .name = "brightness",
7192 .read = brightness_read,
7193 .write = brightness_write,
7194 .exit = brightness_exit,
0e501834
HMH		 7195 .suspend = brightness_suspend,
7196 .shutdown = brightness_shutdown,
a5763f22
HMH		 7197};
7198
56b6aeb0
HMH		 7199/*************************************************************************
7200 * Volume subdriver
7201 */
fb87a811 7202
329e4e18
HMH		 7203/*
7204 * IBM ThinkPads have a simple volume controller with MUTE gating.
7205 * Very early Lenovo ThinkPads follow the IBM ThinkPad spec.
7206 *
7207 * Since the *61 series (and probably also the later *60 series), Lenovo
7208 * ThinkPads only implement the MUTE gate.
7209 *
7210 * EC register 0x30
7211 * Bit 6: MUTE (1 mutes sound)
7212 * Bit 3-0: Volume
7213 * Other bits should be zero as far as we know.
7214 *
7215 * This is also stored in CMOS NVRAM, byte 0x60, bit 6 (MUTE), and
7216 * bits 3-0 (volume). Other bits in NVRAM may have other functions,
7217 * such as bit 7 which is used to detect repeated presses of MUTE,
7218 * and we leave them unchanged.
9a417ec0
AL		 7219 *
7220 * On newer Lenovo ThinkPads, the EC can automatically change the volume
7221 * in response to user input. Unfortunately, this rarely works well.
7222 * The laptop changes the state of its internal MUTE gate and, on some
7223 * models, sends KEY_MUTE, causing any user code that responds to the
7224 * mute button to get confused. The hardware MUTE gate is also
7225 * unnecessary, since user code can handle the mute button without
7226 * kernel or EC help.
7227 *
7228 * To avoid confusing userspace, we simply disable all EC-based mute
7229 * and volume controls when possible.
329e4e18
HMH		 7230 */
7231
ff850c33
HMH		 7232#ifdef CONFIG_THINKPAD_ACPI_ALSA_SUPPORT
7233
0d204c34
HMH		 7234#define TPACPI_ALSA_DRVNAME "ThinkPad EC"
7235#define TPACPI_ALSA_SHRTNAME "ThinkPad Console Audio Control"
7236#define TPACPI_ALSA_MIXERNAME TPACPI_ALSA_SHRTNAME
7237
cab66613
TI		 7238#if SNDRV_CARDS <= 32
7239#define DEFAULT_ALSA_IDX ~((1 << (SNDRV_CARDS - 3)) - 1)
7240#else
7241#define DEFAULT_ALSA_IDX ~((1 << (32 - 3)) - 1)
7242#endif
7243static int alsa_index = DEFAULT_ALSA_IDX; /* last three slots */
0d204c34 7244static char *alsa_id = "ThinkPadEC";
90ab5ee9 7245static bool alsa_enable = SNDRV_DEFAULT_ENABLE1;
0d204c34
HMH		 7246
7247struct tpacpi_alsa_data {
7248 struct snd_card *card;
7249 struct snd_ctl_elem_id *ctl_mute_id;
7250 struct snd_ctl_elem_id *ctl_vol_id;
7251};
7252
7253static struct snd_card *alsa_card;
7254
329e4e18
HMH		 7255enum {
7256 TP_EC_AUDIO = 0x30,
7257
7258 /* TP_EC_AUDIO bits */
7259 TP_EC_AUDIO_MUTESW = 6,
7260
7261 /* TP_EC_AUDIO bitmasks */
7262 TP_EC_AUDIO_LVL_MSK = 0x0F,
7263 TP_EC_AUDIO_MUTESW_MSK = (1 << TP_EC_AUDIO_MUTESW),
7264
7265 /* Maximum volume */
7266 TP_EC_VOLUME_MAX = 14,
7267};
7268
7269enum tpacpi_volume_access_mode {
7270 TPACPI_VOL_MODE_AUTO = 0, /* Not implemented yet */
7271 TPACPI_VOL_MODE_EC, /* Pure EC control */
7272 TPACPI_VOL_MODE_UCMS_STEP, /* UCMS step-based control: N/A */
7273 TPACPI_VOL_MODE_ECNVRAM, /* EC control w/ NVRAM store */
7274 TPACPI_VOL_MODE_MAX
7275};
7276
a112ceee
HMH		 7277enum tpacpi_volume_capabilities {
7278 TPACPI_VOL_CAP_AUTO = 0, /* Use white/blacklist */
7279 TPACPI_VOL_CAP_VOLMUTE, /* Output vol and mute */
7280 TPACPI_VOL_CAP_MUTEONLY, /* Output mute only */
7281 TPACPI_VOL_CAP_MAX
7282};
7283
9a417ec0
AL		 7284enum tpacpi_mute_btn_mode {
7285 TP_EC_MUTE_BTN_LATCH = 0, /* Mute mutes; up/down unmutes */
7286 /* We don't know what mode 1 is. */
7287 TP_EC_MUTE_BTN_NONE = 2, /* Mute and up/down are just keys */
7288 TP_EC_MUTE_BTN_TOGGLE = 3, /* Mute toggles; up/down unmutes */
7289};
7290
329e4e18
HMH		 7291static enum tpacpi_volume_access_mode volume_mode =
7292 TPACPI_VOL_MODE_MAX;
7293
a112ceee 7294static enum tpacpi_volume_capabilities volume_capabilities;
90ab5ee9 7295static bool volume_control_allowed;
9a417ec0
AL		 7296static bool software_mute_requested = true;
7297static bool software_mute_active;
7298static int software_mute_orig_mode;
f74a27d4 7299
329e4e18
HMH		 7300/*
7301 * Used to syncronize writers to TP_EC_AUDIO and
7302 * TP_NVRAM_ADDR_MIXER, as we need to do read-modify-write
7303 */
7304static struct mutex volume_mutex;
7305
7306static void tpacpi_volume_checkpoint_nvram(void)
78f81cc4 7307{
329e4e18
HMH		 7308 u8 lec = 0;
7309 u8 b_nvram;
a112ceee 7310 u8 ec_mask;
329e4e18
HMH		 7311
7312 if (volume_mode != TPACPI_VOL_MODE_ECNVRAM)
7313 return;
c7ac6291
HMH		 7314 if (!volume_control_allowed)
7315 return;
9a417ec0
AL		 7316 if (software_mute_active)
7317 return;
329e4e18
HMH		 7318
7319 vdbg_printk(TPACPI_DBG_MIXER,
7320 "trying to checkpoint mixer state to NVRAM...\n");
78f81cc4 7321
a112ceee
HMH		 7322 if (tp_features.mixer_no_level_control)
7323 ec_mask = TP_EC_AUDIO_MUTESW_MSK;
7324 else
7325 ec_mask = TP_EC_AUDIO_MUTESW_MSK | TP_EC_AUDIO_LVL_MSK;
7326
329e4e18
HMH		 7327 if (mutex_lock_killable(&volume_mutex) < 0)
7328 return;
7329
7330 if (unlikely(!acpi_ec_read(TP_EC_AUDIO, &lec)))
7331 goto unlock;
7332 lec &= ec_mask;
7333 b_nvram = nvram_read_byte(TP_NVRAM_ADDR_MIXER);
7334
7335 if (lec != (b_nvram & ec_mask)) {
7336 /* NVRAM needs update */
7337 b_nvram &= ~ec_mask;
7338 b_nvram |= lec;
7339 nvram_write_byte(b_nvram, TP_NVRAM_ADDR_MIXER);
7340 dbg_printk(TPACPI_DBG_MIXER,
7341 "updated NVRAM mixer status to 0x%02x (0x%02x)\n",
7342 (unsigned int) lec, (unsigned int) b_nvram);
78f81cc4 7343 } else {
329e4e18
HMH		 7344 vdbg_printk(TPACPI_DBG_MIXER,
7345 "NVRAM mixer status already is 0x%02x (0x%02x)\n",
7346 (unsigned int) lec, (unsigned int) b_nvram);
78f81cc4
BD		 7347 }
7348
329e4e18
HMH		 7349unlock:
7350 mutex_unlock(&volume_mutex);
78f81cc4
BD		 7351}
7352
329e4e18 7353static int volume_get_status_ec(u8 *status)
78f81cc4 7354{
329e4e18 7355 u8 s;
78f81cc4 7356
329e4e18
HMH		 7357 if (!acpi_ec_read(TP_EC_AUDIO, &s))
7358 return -EIO;
78f81cc4 7359
329e4e18 7360 *status = s;
1da177e4 7361
329e4e18 7362 dbg_printk(TPACPI_DBG_MIXER, "status 0x%02x\n", s);
35ff8b9f 7363
329e4e18
HMH		 7364 return 0;
7365}
78f81cc4 7366
329e4e18
HMH		 7367static int volume_get_status(u8 *status)
7368{
7369 return volume_get_status_ec(status);
7370}
78f81cc4 7371
329e4e18
HMH		 7372static int volume_set_status_ec(const u8 status)
7373{
7374 if (!acpi_ec_write(TP_EC_AUDIO, status))
7375 return -EIO;
78f81cc4 7376
329e4e18
HMH		 7377 dbg_printk(TPACPI_DBG_MIXER, "set EC mixer to 0x%02x\n", status);
7378
9a417ec0
AL		 7379 /*
7380 * On X200s, and possibly on others, it can take a while for
7381 * reads to become correct.
7382 */
7383 msleep(1);
7384
329e4e18
HMH		 7385 return 0;
7386}
7387
7388static int volume_set_status(const u8 status)
7389{
7390 return volume_set_status_ec(status);
7391}
7392
88cc8377
HMH		 7393/* returns < 0 on error, 0 on no change, 1 on change */
7394static int __volume_set_mute_ec(const bool mute)
329e4e18
HMH		 7395{
7396 int rc;
7397 u8 s, n;
7398
7399 if (mutex_lock_killable(&volume_mutex) < 0)
7400 return -EINTR;
7401
7402 rc = volume_get_status_ec(&s);
7403 if (rc)
7404 goto unlock;
7405
7406 n = (mute) ? s | TP_EC_AUDIO_MUTESW_MSK :
7407 s & ~TP_EC_AUDIO_MUTESW_MSK;
7408
88cc8377 7409 if (n != s) {
329e4e18 7410 rc = volume_set_status_ec(n);
88cc8377
HMH		 7411 if (!rc)
7412 rc = 1;
7413 }
329e4e18
HMH		 7414
7415unlock:
7416 mutex_unlock(&volume_mutex);
7417 return rc;
7418}
7419
88cc8377
HMH		 7420static int volume_alsa_set_mute(const bool mute)
7421{
7422 dbg_printk(TPACPI_DBG_MIXER, "ALSA: trying to %smute\n",
7423 (mute) ? "" : "un");
7424 return __volume_set_mute_ec(mute);
7425}
7426
329e4e18
HMH		 7427static int volume_set_mute(const bool mute)
7428{
88cc8377
HMH		 7429 int rc;
7430
329e4e18
HMH		 7431 dbg_printk(TPACPI_DBG_MIXER, "trying to %smute\n",
7432 (mute) ? "" : "un");
88cc8377
HMH		 7433
7434 rc = __volume_set_mute_ec(mute);
7435 return (rc < 0) ? rc : 0;
329e4e18
HMH		 7436}
7437
88cc8377
HMH		 7438/* returns < 0 on error, 0 on no change, 1 on change */
7439static int __volume_set_volume_ec(const u8 vol)
329e4e18
HMH		 7440{
7441 int rc;
7442 u8 s, n;
7443
7444 if (vol > TP_EC_VOLUME_MAX)
7445 return -EINVAL;
7446
7447 if (mutex_lock_killable(&volume_mutex) < 0)
7448 return -EINTR;
7449
7450 rc = volume_get_status_ec(&s);
7451 if (rc)
7452 goto unlock;
7453
7454 n = (s & ~TP_EC_AUDIO_LVL_MSK) | vol;
7455
88cc8377 7456 if (n != s) {
329e4e18 7457 rc = volume_set_status_ec(n);
88cc8377
HMH		 7458 if (!rc)
7459 rc = 1;
7460 }
329e4e18
HMH		 7461
7462unlock:
7463 mutex_unlock(&volume_mutex);
7464 return rc;
7465}
7466
9a417ec0
AL		 7467static int volume_set_software_mute(bool startup)
7468{
7469 int result;
7470
7471 if (!tpacpi_is_lenovo())
7472 return -ENODEV;
7473
7474 if (startup) {
7475 if (!acpi_evalf(ec_handle, &software_mute_orig_mode,
7476 "HAUM", "qd"))
7477 return -EIO;
7478
7479 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER,
7480 "Initial HAUM setting was %d\n",
7481 software_mute_orig_mode);
7482 }
7483
7484 if (!acpi_evalf(ec_handle, &result, "SAUM", "qdd",
7485 (int)TP_EC_MUTE_BTN_NONE))
7486 return -EIO;
7487
7488 if (result != TP_EC_MUTE_BTN_NONE)
7489 pr_warn("Unexpected SAUM result %d\n",
7490 result);
7491
7492 /*
7493 * In software mute mode, the standard codec controls take
7494 * precendence, so we unmute the ThinkPad HW switch at
7495 * startup. Just on case there are SAUM-capable ThinkPads
7496 * with level controls, set max HW volume as well.
7497 */
7498 if (tp_features.mixer_no_level_control)
7499 result = volume_set_mute(false);
7500 else
7501 result = volume_set_status(TP_EC_VOLUME_MAX);
7502
7503 if (result != 0)
7504 pr_warn("Failed to unmute the HW mute switch\n");
7505
7506 return 0;
7507}
7508
7509static void volume_exit_software_mute(void)
7510{
7511 int r;
7512
7513 if (!acpi_evalf(ec_handle, &r, "SAUM", "qdd", software_mute_orig_mode)
7514 || r != software_mute_orig_mode)
7515 pr_warn("Failed to restore mute mode\n");
7516}
7517
88cc8377 7518static int volume_alsa_set_volume(const u8 vol)
329e4e18
HMH		 7519{
7520 dbg_printk(TPACPI_DBG_MIXER,
88cc8377
HMH		 7521 "ALSA: trying to set volume level to %hu\n", vol);
7522 return __volume_set_volume_ec(vol);
329e4e18
HMH		 7523}
7524
0d204c34
HMH		 7525static void volume_alsa_notify_change(void)
7526{
7527 struct tpacpi_alsa_data *d;
7528
7529 if (alsa_card && alsa_card->private_data) {
7530 d = alsa_card->private_data;
7531 if (d->ctl_mute_id)
7532 snd_ctl_notify(alsa_card,
7533 SNDRV_CTL_EVENT_MASK_VALUE,
7534 d->ctl_mute_id);
7535 if (d->ctl_vol_id)
7536 snd_ctl_notify(alsa_card,
7537 SNDRV_CTL_EVENT_MASK_VALUE,
7538 d->ctl_vol_id);
7539 }
7540}
7541
7542static int volume_alsa_vol_info(struct snd_kcontrol *kcontrol,
7543 struct snd_ctl_elem_info *uinfo)
7544{
7545 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
7546 uinfo->count = 1;
7547 uinfo->value.integer.min = 0;
7548 uinfo->value.integer.max = TP_EC_VOLUME_MAX;
7549 return 0;
7550}
7551
7552static int volume_alsa_vol_get(struct snd_kcontrol *kcontrol,
7553 struct snd_ctl_elem_value *ucontrol)
7554{
7555 u8 s;
7556 int rc;
7557
7558 rc = volume_get_status(&s);
7559 if (rc < 0)
7560 return rc;
7561
7562 ucontrol->value.integer.value[0] = s & TP_EC_AUDIO_LVL_MSK;
7563 return 0;
7564}
7565
7566static int volume_alsa_vol_put(struct snd_kcontrol *kcontrol,
7567 struct snd_ctl_elem_value *ucontrol)
7568{
38e11cde
HMH		 7569 tpacpi_disclose_usertask("ALSA", "set volume to %ld\n",
7570 ucontrol->value.integer.value[0]);
88cc8377 7571 return volume_alsa_set_volume(ucontrol->value.integer.value[0]);
0d204c34
HMH		 7572}
7573
7574#define volume_alsa_mute_info snd_ctl_boolean_mono_info
7575
7576static int volume_alsa_mute_get(struct snd_kcontrol *kcontrol,
7577 struct snd_ctl_elem_value *ucontrol)
7578{
7579 u8 s;
7580 int rc;
7581
7582 rc = volume_get_status(&s);
7583 if (rc < 0)
7584 return rc;
7585
7586 ucontrol->value.integer.value[0] =
7587 (s & TP_EC_AUDIO_MUTESW_MSK) ? 0 : 1;
7588 return 0;
7589}
7590
7591static int volume_alsa_mute_put(struct snd_kcontrol *kcontrol,
7592 struct snd_ctl_elem_value *ucontrol)
7593{
38e11cde
HMH		 7594 tpacpi_disclose_usertask("ALSA", "%smute\n",
7595 ucontrol->value.integer.value[0] ?
7596 "un" : "");
88cc8377 7597 return volume_alsa_set_mute(!ucontrol->value.integer.value[0]);
0d204c34
HMH		 7598}
7599
c3aa4723 7600static struct snd_kcontrol_new volume_alsa_control_vol __initdata = {
0d204c34
HMH		 7601 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
7602 .name = "Console Playback Volume",
7603 .index = 0,
7604 .access = SNDRV_CTL_ELEM_ACCESS_READ,
7605 .info = volume_alsa_vol_info,
7606 .get = volume_alsa_vol_get,
7607};
7608
c3aa4723 7609static struct snd_kcontrol_new volume_alsa_control_mute __initdata = {
0d204c34
HMH		 7610 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
7611 .name = "Console Playback Switch",
7612 .index = 0,
7613 .access = SNDRV_CTL_ELEM_ACCESS_READ,
7614 .info = volume_alsa_mute_info,
7615 .get = volume_alsa_mute_get,
7616};
7617
fd3c3a42 7618static void volume_suspend(void)
329e4e18
HMH		 7619{
7620 tpacpi_volume_checkpoint_nvram();
7621}
7622
0d204c34
HMH		 7623static void volume_resume(void)
7624{
9a417ec0
AL		 7625 if (software_mute_active) {
7626 if (volume_set_software_mute(false) < 0)
7627 pr_warn("Failed to restore software mute\n");
7628 } else {
7629 volume_alsa_notify_change();
7630 }
0d204c34
HMH		 7631}
7632
329e4e18
HMH		 7633static void volume_shutdown(void)
7634{
7635 tpacpi_volume_checkpoint_nvram();
7636}
7637
7638static void volume_exit(void)
7639{
0d204c34
HMH		 7640 if (alsa_card) {
7641 snd_card_free(alsa_card);
7642 alsa_card = NULL;
7643 }
7644
329e4e18 7645 tpacpi_volume_checkpoint_nvram();
9a417ec0
AL		 7646
7647 if (software_mute_active)
7648 volume_exit_software_mute();
329e4e18
HMH		 7649}
7650
0d204c34
HMH		 7651static int __init volume_create_alsa_mixer(void)
7652{
7653 struct snd_card *card;
7654 struct tpacpi_alsa_data *data;
7655 struct snd_kcontrol *ctl_vol;
7656 struct snd_kcontrol *ctl_mute;
7657 int rc;
7658
89235e55
TI		 7659 rc = snd_card_new(&tpacpi_pdev->dev,
7660 alsa_index, alsa_id, THIS_MODULE,
7661 sizeof(struct tpacpi_alsa_data), &card);
74c75c18 7662 if (rc < 0 || !card) {
0978e012 7663 pr_err("Failed to create ALSA card structures: %d\n", rc);
74c75c18
HMH		 7664 return 1;
7665 }
0d204c34
HMH		 7666
7667 BUG_ON(!card->private_data);
7668 data = card->private_data;
7669 data->card = card;
7670
7671 strlcpy(card->driver, TPACPI_ALSA_DRVNAME,
7672 sizeof(card->driver));
7673 strlcpy(card->shortname, TPACPI_ALSA_SHRTNAME,
7674 sizeof(card->shortname));
7675 snprintf(card->mixername, sizeof(card->mixername), "ThinkPad EC %s",
7676 (thinkpad_id.ec_version_str) ?
7677 thinkpad_id.ec_version_str : "(unknown)");
7678 snprintf(card->longname, sizeof(card->longname),
7679 "%s at EC reg 0x%02x, fw %s", card->shortname, TP_EC_AUDIO,
7680 (thinkpad_id.ec_version_str) ?
7681 thinkpad_id.ec_version_str : "unknown");
7682
7683 if (volume_control_allowed) {
7684 volume_alsa_control_vol.put = volume_alsa_vol_put;
7685 volume_alsa_control_vol.access =
7686 SNDRV_CTL_ELEM_ACCESS_READWRITE;
7687
7688 volume_alsa_control_mute.put = volume_alsa_mute_put;
7689 volume_alsa_control_mute.access =
7690 SNDRV_CTL_ELEM_ACCESS_READWRITE;
7691 }
7692
7693 if (!tp_features.mixer_no_level_control) {
7694 ctl_vol = snd_ctl_new1(&volume_alsa_control_vol, NULL);
7695 rc = snd_ctl_add(card, ctl_vol);
7696 if (rc < 0) {
0978e012
JP		 7697 pr_err("Failed to create ALSA volume control: %d\n",
7698 rc);
74c75c18 7699 goto err_exit;
78f81cc4 7700 }
0d204c34
HMH		 7701 data->ctl_vol_id = &ctl_vol->id;
7702 }
78f81cc4 7703
0d204c34
HMH		 7704 ctl_mute = snd_ctl_new1(&volume_alsa_control_mute, NULL);
7705 rc = snd_ctl_add(card, ctl_mute);
7706 if (rc < 0) {
0978e012 7707 pr_err("Failed to create ALSA mute control: %d\n", rc);
74c75c18 7708 goto err_exit;
0d204c34
HMH		 7709 }
7710 data->ctl_mute_id = &ctl_mute->id;
35ff8b9f 7711
0d204c34 7712 rc = snd_card_register(card);
0d204c34 7713 if (rc < 0) {
0978e012 7714 pr_err("Failed to register ALSA card: %d\n", rc);
74c75c18 7715 goto err_exit;
0d204c34
HMH		 7716 }
7717
7718 alsa_card = card;
74c75c18
HMH		 7719 return 0;
7720
7721err_exit:
7722 snd_card_free(card);
7723 return 1;
0d204c34
HMH		 7724}
7725
a112ceee
HMH		 7726#define TPACPI_VOL_Q_MUTEONLY 0x0001 /* Mute-only control available */
7727#define TPACPI_VOL_Q_LEVEL 0x0002 /* Volume control available */
7728
7729static const struct tpacpi_quirk volume_quirk_table[] __initconst = {
7730 /* Whitelist volume level on all IBM by default */
7731 { .vendor = PCI_VENDOR_ID_IBM,
7732 .bios = TPACPI_MATCH_ANY,
7733 .ec = TPACPI_MATCH_ANY,
7734 .quirks = TPACPI_VOL_Q_LEVEL },
7735
7736 /* Lenovo models with volume control (needs confirmation) */
7737 TPACPI_QEC_LNV('7', 'C', TPACPI_VOL_Q_LEVEL), /* R60/i */
7738 TPACPI_QEC_LNV('7', 'E', TPACPI_VOL_Q_LEVEL), /* R60e/i */
7739 TPACPI_QEC_LNV('7', '9', TPACPI_VOL_Q_LEVEL), /* T60/p */
7740 TPACPI_QEC_LNV('7', 'B', TPACPI_VOL_Q_LEVEL), /* X60/s */
7741 TPACPI_QEC_LNV('7', 'J', TPACPI_VOL_Q_LEVEL), /* X60t */
7742 TPACPI_QEC_LNV('7', '7', TPACPI_VOL_Q_LEVEL), /* Z60 */
7743 TPACPI_QEC_LNV('7', 'F', TPACPI_VOL_Q_LEVEL), /* Z61 */
7744
7745 /* Whitelist mute-only on all Lenovo by default */
7746 { .vendor = PCI_VENDOR_ID_LENOVO,
7747 .bios = TPACPI_MATCH_ANY,
7748 .ec = TPACPI_MATCH_ANY,
7749 .quirks = TPACPI_VOL_Q_MUTEONLY }
7750};
7751
329e4e18
HMH		 7752static int __init volume_init(struct ibm_init_struct *iibm)
7753{
a112ceee 7754 unsigned long quirks;
0d204c34 7755 int rc;
a112ceee 7756
329e4e18
HMH		 7757 vdbg_printk(TPACPI_DBG_INIT, "initializing volume subdriver\n");
7758
7759 mutex_init(&volume_mutex);
7760
7761 /*
7762 * Check for module parameter bogosity, note that we
7763 * init volume_mode to TPACPI_VOL_MODE_MAX in order to be
7764 * able to detect "unspecified"
7765 */
7766 if (volume_mode > TPACPI_VOL_MODE_MAX)
7767 return -EINVAL;
7768
7769 if (volume_mode == TPACPI_VOL_MODE_UCMS_STEP) {
5cac62ac
AS		 7770 pr_err("UCMS step volume mode not implemented, please contact %s\n",
7771 TPACPI_MAIL);
329e4e18
HMH		 7772 return 1;
7773 }
7774
a112ceee
HMH		 7775 if (volume_capabilities >= TPACPI_VOL_CAP_MAX)
7776 return -EINVAL;
7777
0d204c34
HMH		 7778 /*
7779 * The ALSA mixer is our primary interface.
7780 * When disabled, don't install the subdriver at all
7781 */
7782 if (!alsa_enable) {
7783 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER,
5cac62ac 7784 "ALSA mixer disabled by parameter, not loading volume subdriver...\n");
0d204c34
HMH		 7785 return 1;
7786 }
7787
a112ceee
HMH		 7788 quirks = tpacpi_check_quirks(volume_quirk_table,
7789 ARRAY_SIZE(volume_quirk_table));
7790
7791 switch (volume_capabilities) {
7792 case TPACPI_VOL_CAP_AUTO:
7793 if (quirks & TPACPI_VOL_Q_MUTEONLY)
7794 tp_features.mixer_no_level_control = 1;
7795 else if (quirks & TPACPI_VOL_Q_LEVEL)
7796 tp_features.mixer_no_level_control = 0;
7797 else
7798 return 1; /* no mixer */
7799 break;
7800 case TPACPI_VOL_CAP_VOLMUTE:
7801 tp_features.mixer_no_level_control = 0;
7802 break;
7803 case TPACPI_VOL_CAP_MUTEONLY:
7804 tp_features.mixer_no_level_control = 1;
7805 break;
7806 default:
7807 return 1;
7808 }
7809
7810 if (volume_capabilities != TPACPI_VOL_CAP_AUTO)
7811 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER,
7812 "using user-supplied volume_capabilities=%d\n",
7813 volume_capabilities);
7814
329e4e18
HMH		 7815 if (volume_mode == TPACPI_VOL_MODE_AUTO ||
7816 volume_mode == TPACPI_VOL_MODE_MAX) {
7817 volume_mode = TPACPI_VOL_MODE_ECNVRAM;
7818
7819 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER,
7820 "driver auto-selected volume_mode=%d\n",
7821 volume_mode);
7822 } else {
7823 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER,
7824 "using user-supplied volume_mode=%d\n",
7825 volume_mode);
7826 }
7827
7828 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER,
a112ceee
HMH		 7829 "mute is supported, volume control is %s\n",
7830 str_supported(!tp_features.mixer_no_level_control));
329e4e18 7831
9a417ec0
AL		 7832 if (software_mute_requested && volume_set_software_mute(true) == 0) {
7833 software_mute_active = true;
7834 } else {
7835 rc = volume_create_alsa_mixer();
7836 if (rc) {
7837 pr_err("Could not create the ALSA mixer interface\n");
7838 return rc;
7839 }
0d204c34 7840
9a417ec0
AL		 7841 pr_info("Console audio control enabled, mode: %s\n",
7842 (volume_control_allowed) ?
7843 "override (read/write)" :
7844 "monitor (read only)");
7845 }
c7ac6291 7846
0d204c34
HMH		 7847 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER,
7848 "registering volume hotkeys as change notification\n");
7849 tpacpi_hotkey_driver_mask_set(hotkey_driver_mask
7850 | TP_ACPI_HKEY_VOLUP_MASK
7851 | TP_ACPI_HKEY_VOLDWN_MASK
7852 | TP_ACPI_HKEY_MUTE_MASK);
7853
329e4e18
HMH		 7854 return 0;
7855}
f74a27d4 7856
887965e6 7857static int volume_read(struct seq_file *m)
78f81cc4 7858{
329e4e18 7859 u8 status;
78f81cc4 7860
329e4e18 7861 if (volume_get_status(&status) < 0) {
887965e6 7862 seq_printf(m, "level:\t\tunreadable\n");
78f81cc4 7863 } else {
a112ceee 7864 if (tp_features.mixer_no_level_control)
887965e6 7865 seq_printf(m, "level:\t\tunsupported\n");
a112ceee 7866 else
887965e6 7867 seq_printf(m, "level:\t\t%d\n",
a112ceee
HMH		 7868 status & TP_EC_AUDIO_LVL_MSK);
7869
887965e6 7870 seq_printf(m, "mute:\t\t%s\n",
329e4e18 7871 onoff(status, TP_EC_AUDIO_MUTESW));
a112ceee 7872
c7ac6291 7873 if (volume_control_allowed) {
887965e6 7874 seq_printf(m, "commands:\tunmute, mute\n");
c7ac6291 7875 if (!tp_features.mixer_no_level_control) {
5cac62ac
AS		 7876 seq_printf(m, "commands:\tup, down\n");
7877 seq_printf(m, "commands:\tlevel <level> (<level> is 0-%d)\n",
7878 TP_EC_VOLUME_MAX);
c7ac6291 7879 }
78f81cc4
BD		 7880 }
7881 }
7882
7883 return 0;
7884}
7885
78f81cc4
BD		 7886static int volume_write(char *buf)
7887{
329e4e18
HMH		 7888 u8 s;
7889 u8 new_level, new_mute;
7890 int l;
78f81cc4 7891 char *cmd;
329e4e18 7892 int rc;
78f81cc4 7893
c7ac6291
HMH		 7894 /*
7895 * We do allow volume control at driver startup, so that the
7896 * user can set initial state through the volume=... parameter hack.
7897 */
7898 if (!volume_control_allowed && tpacpi_lifecycle != TPACPI_LIFE_INIT) {
7899 if (unlikely(!tp_warned.volume_ctrl_forbidden)) {
7900 tp_warned.volume_ctrl_forbidden = 1;
5cac62ac
AS		 7901 pr_notice("Console audio control in monitor mode, changes are not allowed\n");
7902 pr_notice("Use the volume_control=1 module parameter to enable volume control\n");
c7ac6291
HMH		 7903 }
7904 return -EPERM;
7905 }
7906
329e4e18
HMH		 7907 rc = volume_get_status(&s);
7908 if (rc < 0)
7909 return rc;
78f81cc4 7910
329e4e18
HMH		 7911 new_level = s & TP_EC_AUDIO_LVL_MSK;
7912 new_mute = s & TP_EC_AUDIO_MUTESW_MSK;
7913
be51bd45 7914 while ((cmd = strsep(&buf, ","))) {
a112ceee
HMH		 7915 if (!tp_features.mixer_no_level_control) {
7916 if (strlencmp(cmd, "up") == 0) {
7917 if (new_mute)
7918 new_mute = 0;
7919 else if (new_level < TP_EC_VOLUME_MAX)
7920 new_level++;
7921 continue;
7922 } else if (strlencmp(cmd, "down") == 0) {
7923 if (new_mute)
7924 new_mute = 0;
7925 else if (new_level > 0)
7926 new_level--;
7927 continue;
7928 } else if (sscanf(cmd, "level %u", &l) == 1 &&
7929 l >= 0 && l <= TP_EC_VOLUME_MAX) {
3fca4b14 7930 new_level = l;
a112ceee
HMH		 7931 continue;
7932 }
7933 }
7934 if (strlencmp(cmd, "mute") == 0)
329e4e18 7935 new_mute = TP_EC_AUDIO_MUTESW_MSK;
a112ceee
HMH		 7936 else if (strlencmp(cmd, "unmute") == 0)
7937 new_mute = 0;
7938 else
1da177e4 7939 return -EINVAL;
329e4e18 7940 }
1da177e4 7941
a112ceee
HMH		 7942 if (tp_features.mixer_no_level_control) {
7943 tpacpi_disclose_usertask("procfs volume", "%smute\n",
7944 new_mute ? "" : "un");
7945 rc = volume_set_mute(!!new_mute);
7946 } else {
7947 tpacpi_disclose_usertask("procfs volume",
7948 "%smute and set level to %d\n",
7949 new_mute ? "" : "un", new_level);
7950 rc = volume_set_status(new_mute | new_level);
7951 }
0d204c34 7952 volume_alsa_notify_change();
78f81cc4 7953
329e4e18 7954 return (rc == -EINTR) ? -ERESTARTSYS : rc;
78f81cc4
BD		 7955}
7956
a5763f22
HMH		 7957static struct ibm_struct volume_driver_data = {
7958 .name = "volume",
7959 .read = volume_read,
7960 .write = volume_write,
329e4e18
HMH		 7961 .exit = volume_exit,
7962 .suspend = volume_suspend,
0d204c34 7963 .resume = volume_resume,
329e4e18 7964 .shutdown = volume_shutdown,
a5763f22 7965};
56b6aeb0 7966
ff850c33
HMH		 7967#else /* !CONFIG_THINKPAD_ACPI_ALSA_SUPPORT */
7968
7969#define alsa_card NULL
7970
bb55a2ee 7971static inline void volume_alsa_notify_change(void)
ff850c33
HMH		 7972{
7973}
7974
7975static int __init volume_init(struct ibm_init_struct *iibm)
7976{
0978e012 7977 pr_info("volume: disabled as there is no ALSA support in this kernel\n");
ff850c33
HMH		 7978
7979 return 1;
7980}
7981
7982static struct ibm_struct volume_driver_data = {
7983 .name = "volume",
7984};
7985
7986#endif /* CONFIG_THINKPAD_ACPI_ALSA_SUPPORT */
7987
56b6aeb0
HMH		 7988/*************************************************************************
7989 * Fan subdriver
7990 */
7991
7992/*
7993 * FAN ACCESS MODES
7994 *
efa27145 7995 * TPACPI_FAN_RD_ACPI_GFAN:
56b6aeb0
HMH		 7996 * ACPI GFAN method: returns fan level
7997 *
efa27145 7998 * see TPACPI_FAN_WR_ACPI_SFAN
f51d1a39 7999 * EC 0x2f (HFSP) not available if GFAN exists
56b6aeb0 8000 *
efa27145 8001 * TPACPI_FAN_WR_ACPI_SFAN:
56b6aeb0
HMH		 8002 * ACPI SFAN method: sets fan level, 0 (stop) to 7 (max)
8003 *
f51d1a39
HMH		 8004 * EC 0x2f (HFSP) might be available *for reading*, but do not use
8005 * it for writing.
56b6aeb0 8006 *
efa27145 8007 * TPACPI_FAN_WR_TPEC:
f51d1a39
HMH		 8008 * ThinkPad EC register 0x2f (HFSP): fan control loop mode
8009 * Supported on almost all ThinkPads
56b6aeb0
HMH		 8010 *
8011 * Fan speed changes of any sort (including those caused by the
8012 * disengaged mode) are usually done slowly by the firmware as the
9ddc5b6f 8013 * maximum amount of fan duty cycle change per second seems to be
56b6aeb0
HMH		 8014 * limited.
8015 *
8016 * Reading is not available if GFAN exists.
8017 * Writing is not available if SFAN exists.
8018 *
8019 * Bits
8020 * 7 automatic mode engaged;
8021 * (default operation mode of the ThinkPad)
8022 * fan level is ignored in this mode.
f51d1a39 8023 * 6 full speed mode (takes precedence over bit 7);
56b6aeb0 8024 * not available on all thinkpads. May disable
f51d1a39
HMH		 8025 * the tachometer while the fan controller ramps up
8026 * the speed (which can take up to a few *minutes*).
8027 * Speeds up fan to 100% duty-cycle, which is far above
8028 * the standard RPM levels. It is not impossible that
8029 * it could cause hardware damage.
56b6aeb0
HMH		 8030 * 5-3 unused in some models. Extra bits for fan level
8031 * in others, but still useless as all values above
8032 * 7 map to the same speed as level 7 in these models.
8033 * 2-0 fan level (0..7 usually)
8034 * 0x00 = stop
8035 * 0x07 = max (set when temperatures critical)
8036 * Some ThinkPads may have other levels, see
efa27145 8037 * TPACPI_FAN_WR_ACPI_FANS (X31/X40/X41)
56b6aeb0
HMH		 8038 *
8039 * FIRMWARE BUG: on some models, EC 0x2f might not be initialized at
b595076a 8040 * boot. Apparently the EC does not initialize it, so unless ACPI DSDT
56b6aeb0
HMH		 8041 * does so, its initial value is meaningless (0x07).
8042 *
8043 * For firmware bugs, refer to:
19206a1e 8044 * https://thinkwiki.org/wiki/Embedded_Controller_Firmware#Firmware_Issues
56b6aeb0
HMH		 8045 *
8046 * ----
8047 *
8048 * ThinkPad EC register 0x84 (LSB), 0x85 (MSB):
8049 * Main fan tachometer reading (in RPM)
8050 *
8051 * This register is present on all ThinkPads with a new-style EC, and
8052 * it is known not to be present on the A21m/e, and T22, as there is
8053 * something else in offset 0x84 according to the ACPI DSDT. Other
8054 * ThinkPads from this same time period (and earlier) probably lack the
8055 * tachometer as well.
8056 *
877d0310 8057 * Unfortunately a lot of ThinkPads with new-style ECs but whose firmware
56b6aeb0
HMH		 8058 * was never fixed by IBM to report the EC firmware version string
8059 * probably support the tachometer (like the early X models), so
8060 * detecting it is quite hard. We need more data to know for sure.
8061 *
8062 * FIRMWARE BUG: always read 0x84 first, otherwise incorrect readings
8063 * might result.
8064 *
f51d1a39
HMH		 8065 * FIRMWARE BUG: may go stale while the EC is switching to full speed
8066 * mode.
56b6aeb0
HMH		 8067 *
8068 * For firmware bugs, refer to:
19206a1e 8069 * https://thinkwiki.org/wiki/Embedded_Controller_Firmware#Firmware_Issues
56b6aeb0 8070 *
d7377247
HMH		 8071 * ----
8072 *
8073 * ThinkPad EC register 0x31 bit 0 (only on select models)
8074 *
8075 * When bit 0 of EC register 0x31 is zero, the tachometer registers
8076 * show the speed of the main fan. When bit 0 of EC register 0x31
8077 * is one, the tachometer registers show the speed of the auxiliary
8078 * fan.
8079 *
8080 * Fan control seems to affect both fans, regardless of the state
8081 * of this bit.
8082 *
8083 * So far, only the firmware for the X60/X61 non-tablet versions
8084 * seem to support this (firmware TP-7M).
8085 *
efa27145 8086 * TPACPI_FAN_WR_ACPI_FANS:
56b6aeb0
HMH		 8087 * ThinkPad X31, X40, X41. Not available in the X60.
8088 *
8089 * FANS ACPI handle: takes three arguments: low speed, medium speed,
8090 * high speed. ACPI DSDT seems to map these three speeds to levels
8091 * as follows: STOP LOW LOW MED MED HIGH HIGH HIGH HIGH
8092 * (this map is stored on FAN0..FAN8 as "0,1,1,2,2,3,3,3,3")
8093 *
8094 * The speeds are stored on handles
8095 * (FANA:FAN9), (FANC:FANB), (FANE:FAND).
8096 *
af901ca1 8097 * There are three default speed sets, accessible as handles:
56b6aeb0
HMH		 8098 * FS1L,FS1M,FS1H; FS2L,FS2M,FS2H; FS3L,FS3M,FS3H
8099 *
8100 * ACPI DSDT switches which set is in use depending on various
8101 * factors.
8102 *
efa27145 8103 * TPACPI_FAN_WR_TPEC is also available and should be used to
56b6aeb0
HMH		 8104 * command the fan. The X31/X40/X41 seems to have 8 fan levels,
8105 * but the ACPI tables just mention level 7.
8106 */
8107
f74a27d4
HMH		 8108enum { /* Fan control constants */
8109 fan_status_offset = 0x2f, /* EC register 0x2f */
8110 fan_rpm_offset = 0x84, /* EC register 0x84: LSB, 0x85 MSB (RPM)
8111 * 0x84 must be read before 0x85 */
d7377247
HMH		 8112 fan_select_offset = 0x31, /* EC register 0x31 (Firmware 7M)
8113 bit 0 selects which fan is active */
f74a27d4
HMH		 8114
8115 TP_EC_FAN_FULLSPEED = 0x40, /* EC fan mode: full speed */
8116 TP_EC_FAN_AUTO = 0x80, /* EC fan mode: auto fan control */
8117
8118 TPACPI_FAN_LAST_LEVEL = 0x100, /* Use cached last-seen fan level */
8119};
8120
8121enum fan_status_access_mode {
8122 TPACPI_FAN_NONE = 0, /* No fan status or control */
8123 TPACPI_FAN_RD_ACPI_GFAN, /* Use ACPI GFAN */
8124 TPACPI_FAN_RD_TPEC, /* Use ACPI EC regs 0x2f, 0x84-0x85 */
8125};
8126
8127enum fan_control_access_mode {
8128 TPACPI_FAN_WR_NONE = 0, /* No fan control */
8129 TPACPI_FAN_WR_ACPI_SFAN, /* Use ACPI SFAN */
8130 TPACPI_FAN_WR_TPEC, /* Use ACPI EC reg 0x2f */
8131 TPACPI_FAN_WR_ACPI_FANS, /* Use ACPI FANS and EC reg 0x2f */
8132};
8133
8134enum fan_control_commands {
8135 TPACPI_FAN_CMD_SPEED = 0x0001, /* speed command */
8136 TPACPI_FAN_CMD_LEVEL = 0x0002, /* level command */
8137 TPACPI_FAN_CMD_ENABLE = 0x0004, /* enable/disable cmd,
8138 * and also watchdog cmd */
8139};
8140
90ab5ee9 8141static bool fan_control_allowed;
f74a27d4 8142
69ba91cb
HMH		 8143static enum fan_status_access_mode fan_status_access_mode;
8144static enum fan_control_access_mode fan_control_access_mode;
8145static enum fan_control_commands fan_control_commands;
78f81cc4 8146
778b4d74 8147static u8 fan_control_initial_status;
fe98a52c 8148static u8 fan_control_desired_level;
0081b162 8149static u8 fan_control_resume_level;
f74a27d4
HMH		 8150static int fan_watchdog_maxinterval;
8151
8152static struct mutex fan_mutex;
778b4d74 8153
25c68a33 8154static void fan_watchdog_fire(struct work_struct *ignored);
25c68a33 8155static DECLARE_DELAYED_WORK(fan_watchdog_task, fan_watchdog_fire);
16663a87 8156
e0c7dfe7
HMH		 8157TPACPI_HANDLE(fans, ec, "FANS"); /* X31, X40, X41 */
8158TPACPI_HANDLE(gfan, ec, "GFAN", /* 570 */
56b6aeb0
HMH		 8159 "\\FSPD", /* 600e/x, 770e, 770x */
8160 ); /* all others */
e0c7dfe7 8161TPACPI_HANDLE(sfan, ec, "SFAN", /* 570 */
56b6aeb0
HMH		 8162 "JFNS", /* 770x-JL */
8163 ); /* all others */
8164
1c2ece75
HMH		 8165/*
8166 * Unitialized HFSP quirk: ACPI DSDT and EC fail to initialize the
8167 * HFSP register at boot, so it contains 0x07 but the Thinkpad could
8168 * be in auto mode (0x80).
8169 *
8170 * This is corrected by any write to HFSP either by the driver, or
8171 * by the firmware.
8172 *
8173 * We assume 0x07 really means auto mode while this quirk is active,
8174 * as this is far more likely than the ThinkPad being in level 7,
8175 * which is only used by the firmware during thermal emergencies.
7d95a3d5
HMH		 8176 *
8177 * Enable for TP-1Y (T43), TP-78 (R51e), TP-76 (R52),
8178 * TP-70 (T43, R52), which are known to be buggy.
1c2ece75
HMH		 8179 */
8180
7d95a3d5 8181static void fan_quirk1_setup(void)
1c2ece75 8182{
1c2ece75 8183 if (fan_control_initial_status == 0x07) {
5cac62ac 8184 pr_notice("fan_init: initial fan status is unknown, assuming it is in auto mode\n");
7d95a3d5 8185 tp_features.fan_ctrl_status_undef = 1;
1c2ece75
HMH		 8186 }
8187}
8188
8189static void fan_quirk1_handle(u8 *fan_status)
8190{
8191 if (unlikely(tp_features.fan_ctrl_status_undef)) {
8192 if (*fan_status != fan_control_initial_status) {
8193 /* something changed the HFSP regisnter since
8194 * driver init time, so it is not undefined
8195 * anymore */
8196 tp_features.fan_ctrl_status_undef = 0;
8197 } else {
8198 /* Return most likely status. In fact, it
8199 * might be the only possible status */
8200 *fan_status = TP_EC_FAN_AUTO;
8201 }
8202 }
8203}
8204
d7377247
HMH		 8205/* Select main fan on X60/X61, NOOP on others */
8206static bool fan_select_fan1(void)
8207{
8208 if (tp_features.second_fan) {
8209 u8 val;
8210
8211 if (ec_read(fan_select_offset, &val) < 0)
8212 return false;
8213 val &= 0xFEU;
8214 if (ec_write(fan_select_offset, val) < 0)
8215 return false;
8216 }
8217 return true;
8218}
8219
8220/* Select secondary fan on X60/X61 */
8221static bool fan_select_fan2(void)
8222{
8223 u8 val;
8224
8225 if (!tp_features.second_fan)
8226 return false;
8227
8228 if (ec_read(fan_select_offset, &val) < 0)
8229 return false;
8230 val |= 0x01U;
8231 if (ec_write(fan_select_offset, val) < 0)
8232 return false;
8233
8234 return true;
8235}
8236
fe98a52c 8237/*
b21a15f6 8238 * Call with fan_mutex held
fe98a52c 8239 */
b21a15f6 8240static void fan_update_desired_level(u8 status)
fe98a52c 8241{
b21a15f6
HMH		 8242 if ((status &
8243 (TP_EC_FAN_AUTO | TP_EC_FAN_FULLSPEED)) == 0) {
8244 if (status > 7)
8245 fan_control_desired_level = 7;
8246 else
8247 fan_control_desired_level = status;
8248 }
8249}
fe98a52c 8250
b21a15f6
HMH		 8251static int fan_get_status(u8 *status)
8252{
8253 u8 s;
fe98a52c 8254
b21a15f6
HMH		 8255 /* TODO:
8256 * Add TPACPI_FAN_RD_ACPI_FANS ? */
fe98a52c 8257
b21a15f6 8258 switch (fan_status_access_mode) {
eceeb437 8259 case TPACPI_FAN_RD_ACPI_GFAN: {
b21a15f6 8260 /* 570, 600e/x, 770e, 770x */
eceeb437 8261 int res;
fe98a52c 8262
eceeb437 8263 if (unlikely(!acpi_evalf(gfan_handle, &res, NULL, "d")))
b21a15f6 8264 return -EIO;
fe98a52c 8265
b21a15f6 8266 if (likely(status))
eceeb437 8267 *status = res & 0x07;
fe98a52c 8268
b21a15f6 8269 break;
eceeb437 8270 }
b21a15f6
HMH		 8271 case TPACPI_FAN_RD_TPEC:
8272 /* all except 570, 600e/x, 770e, 770x */
8273 if (unlikely(!acpi_ec_read(fan_status_offset, &s)))
8274 return -EIO;
8275
1c2ece75 8276 if (likely(status)) {
b21a15f6 8277 *status = s;
1c2ece75
HMH		 8278 fan_quirk1_handle(status);
8279 }
fe98a52c 8280
fe98a52c 8281 break;
b21a15f6 8282
fe98a52c 8283 default:
b21a15f6 8284 return -ENXIO;
fe98a52c
HMH		 8285 }
8286
b21a15f6
HMH		 8287 return 0;
8288}
fe98a52c 8289
b21a15f6
HMH		 8290static int fan_get_status_safe(u8 *status)
8291{
8292 int rc;
8293 u8 s;
fe98a52c 8294
7646ea88 8295 if (mutex_lock_killable(&fan_mutex))
b21a15f6
HMH		 8296 return -ERESTARTSYS;
8297 rc = fan_get_status(&s);
8298 if (!rc)
8299 fan_update_desired_level(s);
8300 mutex_unlock(&fan_mutex);
fe98a52c 8301
a7718360
DC		 8302 if (rc)
8303 return rc;
b21a15f6
HMH		 8304 if (status)
8305 *status = s;
fe98a52c 8306
a7718360 8307 return 0;
b21a15f6
HMH		 8308}
8309
8310static int fan_get_speed(unsigned int *speed)
fe98a52c 8311{
b21a15f6 8312 u8 hi, lo;
fe98a52c 8313
b21a15f6
HMH		 8314 switch (fan_status_access_mode) {
8315 case TPACPI_FAN_RD_TPEC:
8316 /* all except 570, 600e/x, 770e, 770x */
d7377247
HMH		 8317 if (unlikely(!fan_select_fan1()))
8318 return -EIO;
b21a15f6
HMH		 8319 if (unlikely(!acpi_ec_read(fan_rpm_offset, &lo) ||
8320 !acpi_ec_read(fan_rpm_offset + 1, &hi)))
8321 return -EIO;
fe98a52c 8322
b21a15f6
HMH		 8323 if (likely(speed))
8324 *speed = (hi << 8) | lo;
fe98a52c 8325
b21a15f6 8326 break;
fe98a52c 8327
b21a15f6
HMH		 8328 default:
8329 return -ENXIO;
8330 }
fe98a52c 8331
b21a15f6 8332 return 0;
fe98a52c
HMH		 8333}
8334
d7377247
HMH		 8335static int fan2_get_speed(unsigned int *speed)
8336{
8337 u8 hi, lo;
8338 bool rc;
8339
8340 switch (fan_status_access_mode) {
8341 case TPACPI_FAN_RD_TPEC:
8342 /* all except 570, 600e/x, 770e, 770x */
8343 if (unlikely(!fan_select_fan2()))
8344 return -EIO;
8345 rc = !acpi_ec_read(fan_rpm_offset, &lo) ||
8346 !acpi_ec_read(fan_rpm_offset + 1, &hi);
8347 fan_select_fan1(); /* play it safe */
8348 if (rc)
8349 return -EIO;
8350
8351 if (likely(speed))
8352 *speed = (hi << 8) | lo;
8353
8354 break;
8355
8356 default:
8357 return -ENXIO;
8358 }
8359
8360 return 0;
8361}
8362
b21a15f6 8363static int fan_set_level(int level)
fe98a52c 8364{
b21a15f6
HMH		 8365 if (!fan_control_allowed)
8366 return -EPERM;
fe98a52c 8367
b21a15f6
HMH		 8368 switch (fan_control_access_mode) {
8369 case TPACPI_FAN_WR_ACPI_SFAN:
14232c6e 8370 if ((level < 0) || (level > 7))
b21a15f6 8371 return -EINVAL;
14232c6e
LH		 8372
8373 if (tp_features.second_fan_ctl) {
8374 if (!fan_select_fan2() ||
8375 !acpi_evalf(sfan_handle, NULL, NULL, "vd", level)) {
8376 pr_warn("Couldn't set 2nd fan level, disabling support\n");
8377 tp_features.second_fan_ctl = 0;
8378 }
8379 fan_select_fan1();
8380 }
8381 if (!acpi_evalf(sfan_handle, NULL, NULL, "vd", level))
8382 return -EIO;
b21a15f6 8383 break;
fe98a52c 8384
b21a15f6
HMH		 8385 case TPACPI_FAN_WR_ACPI_FANS:
8386 case TPACPI_FAN_WR_TPEC:
0081b162
HMH		 8387 if (!(level & TP_EC_FAN_AUTO) &&
8388 !(level & TP_EC_FAN_FULLSPEED) &&
b21a15f6
HMH		 8389 ((level < 0) || (level > 7)))
8390 return -EINVAL;
fe98a52c 8391
b21a15f6
HMH		 8392 /* safety net should the EC not support AUTO
8393 * or FULLSPEED mode bits and just ignore them */
8394 if (level & TP_EC_FAN_FULLSPEED)
8395 level |= 7; /* safety min speed 7 */
547266e4 8396 else if (level & TP_EC_FAN_AUTO)
b21a15f6 8397 level |= 4; /* safety min speed 4 */
fe98a52c 8398
14232c6e
LH		 8399 if (tp_features.second_fan_ctl) {
8400 if (!fan_select_fan2() ||
8401 !acpi_ec_write(fan_status_offset, level)) {
8402 pr_warn("Couldn't set 2nd fan level, disabling support\n");
8403 tp_features.second_fan_ctl = 0;
8404 }
8405 fan_select_fan1();
8406
8407 }
b21a15f6
HMH		 8408 if (!acpi_ec_write(fan_status_offset, level))
8409 return -EIO;
8410 else
8411 tp_features.fan_ctrl_status_undef = 0;
8412 break;
fe98a52c 8413
b21a15f6
HMH		 8414 default:
8415 return -ENXIO;
8416 }
74a60c0f
HMH		 8417
8418 vdbg_printk(TPACPI_DBG_FAN,
8419 "fan control: set fan control register to 0x%02x\n", level);
b21a15f6 8420 return 0;
fe98a52c
HMH		 8421}
8422
b21a15f6 8423static int fan_set_level_safe(int level)
fe98a52c 8424{
b21a15f6 8425 int rc;
fe98a52c 8426
b21a15f6
HMH		 8427 if (!fan_control_allowed)
8428 return -EPERM;
fe98a52c 8429
7646ea88 8430 if (mutex_lock_killable(&fan_mutex))
b21a15f6 8431 return -ERESTARTSYS;
fe98a52c 8432
b21a15f6
HMH		 8433 if (level == TPACPI_FAN_LAST_LEVEL)
8434 level = fan_control_desired_level;
fe98a52c 8435
b21a15f6
HMH		 8436 rc = fan_set_level(level);
8437 if (!rc)
8438 fan_update_desired_level(level);
8439
8440 mutex_unlock(&fan_mutex);
8441 return rc;
fe98a52c
HMH		 8442}
8443
b21a15f6 8444static int fan_set_enable(void)
fe98a52c 8445{
b21a15f6
HMH		 8446 u8 s;
8447 int rc;
fe98a52c 8448
ecf2a80a
HMH		 8449 if (!fan_control_allowed)
8450 return -EPERM;
8451
7646ea88 8452 if (mutex_lock_killable(&fan_mutex))
b21a15f6 8453 return -ERESTARTSYS;
fe98a52c 8454
b21a15f6
HMH		 8455 switch (fan_control_access_mode) {
8456 case TPACPI_FAN_WR_ACPI_FANS:
8457 case TPACPI_FAN_WR_TPEC:
8458 rc = fan_get_status(&s);
8459 if (rc < 0)
8460 break;
fe98a52c 8461
b21a15f6
HMH		 8462 /* Don't go out of emergency fan mode */
8463 if (s != 7) {
8464 s &= 0x07;
8465 s |= TP_EC_FAN_AUTO | 4; /* min fan speed 4 */
8466 }
fe98a52c 8467
b21a15f6
HMH		 8468 if (!acpi_ec_write(fan_status_offset, s))
8469 rc = -EIO;
8470 else {
8471 tp_features.fan_ctrl_status_undef = 0;
8472 rc = 0;
8473 }
8474 break;
fe98a52c 8475
b21a15f6
HMH		 8476 case TPACPI_FAN_WR_ACPI_SFAN:
8477 rc = fan_get_status(&s);
8478 if (rc < 0)
8479 break;
fe98a52c 8480
b21a15f6 8481 s &= 0x07;
fe98a52c 8482
b21a15f6
HMH		 8483 /* Set fan to at least level 4 */
8484 s |= 4;
fe08bc4b 8485
b21a15f6 8486 if (!acpi_evalf(sfan_handle, NULL, NULL, "vd", s))
35ff8b9f 8487 rc = -EIO;
b21a15f6
HMH		 8488 else
8489 rc = 0;
8490 break;
78f81cc4 8491
b21a15f6
HMH		 8492 default:
8493 rc = -ENXIO;
8494 }
5fba344c 8495
b21a15f6 8496 mutex_unlock(&fan_mutex);
74a60c0f
HMH		 8497
8498 if (!rc)
8499 vdbg_printk(TPACPI_DBG_FAN,
8500 "fan control: set fan control register to 0x%02x\n",
8501 s);
b21a15f6 8502 return rc;
69ba91cb 8503}
78f81cc4 8504
b21a15f6 8505static int fan_set_disable(void)
78f81cc4 8506{
b21a15f6 8507 int rc;
c52f0aa5 8508
b21a15f6
HMH		 8509 if (!fan_control_allowed)
8510 return -EPERM;
78f81cc4 8511
7646ea88 8512 if (mutex_lock_killable(&fan_mutex))
b21a15f6 8513 return -ERESTARTSYS;
3ef8a609 8514
b21a15f6
HMH		 8515 rc = 0;
8516 switch (fan_control_access_mode) {
8517 case TPACPI_FAN_WR_ACPI_FANS:
8518 case TPACPI_FAN_WR_TPEC:
8519 if (!acpi_ec_write(fan_status_offset, 0x00))
8520 rc = -EIO;
8521 else {
8522 fan_control_desired_level = 0;
8523 tp_features.fan_ctrl_status_undef = 0;
8524 }
3ef8a609
HMH		 8525 break;
8526
b21a15f6
HMH		 8527 case TPACPI_FAN_WR_ACPI_SFAN:
8528 if (!acpi_evalf(sfan_handle, NULL, NULL, "vd", 0x00))
8529 rc = -EIO;
8530 else
8531 fan_control_desired_level = 0;
c52f0aa5
HMH		 8532 break;
8533
8534 default:
b21a15f6 8535 rc = -ENXIO;
78f81cc4
BD		 8536 }
8537
74a60c0f
HMH		 8538 if (!rc)
8539 vdbg_printk(TPACPI_DBG_FAN,
8540 "fan control: set fan control register to 0\n");
fe98a52c 8541
fe98a52c 8542 mutex_unlock(&fan_mutex);
fe98a52c
HMH		 8543 return rc;
8544}
8545
b21a15f6 8546static int fan_set_speed(int speed)
c52f0aa5 8547{
b21a15f6 8548 int rc;
c52f0aa5 8549
b21a15f6
HMH		 8550 if (!fan_control_allowed)
8551 return -EPERM;
3ef8a609 8552
7646ea88 8553 if (mutex_lock_killable(&fan_mutex))
b21a15f6 8554 return -ERESTARTSYS;
c52f0aa5 8555
b21a15f6
HMH		 8556 rc = 0;
8557 switch (fan_control_access_mode) {
8558 case TPACPI_FAN_WR_ACPI_FANS:
8559 if (speed >= 0 && speed <= 65535) {
8560 if (!acpi_evalf(fans_handle, NULL, NULL, "vddd",
8561 speed, speed, speed))
8562 rc = -EIO;
8563 } else
8564 rc = -EINVAL;
c52f0aa5
HMH		 8565 break;
8566
8567 default:
b21a15f6 8568 rc = -ENXIO;
c52f0aa5
HMH		 8569 }
8570
b21a15f6
HMH		 8571 mutex_unlock(&fan_mutex);
8572 return rc;
16663a87
HMH		 8573}
8574
8575static void fan_watchdog_reset(void)
8576{
4985cd0a
HMH		 8577 if (fan_control_access_mode == TPACPI_FAN_WR_NONE)
8578 return;
8579
8fef502e 8580 if (fan_watchdog_maxinterval > 0 &&
41f63c53
TH		 8581 tpacpi_lifecycle != TPACPI_LIFE_EXITING)
8582 mod_delayed_work(tpacpi_wq, &fan_watchdog_task,
8583 msecs_to_jiffies(fan_watchdog_maxinterval * 1000));
8584 else
8585 cancel_delayed_work(&fan_watchdog_task);
16663a87
HMH		 8586}
8587
b21a15f6 8588static void fan_watchdog_fire(struct work_struct *ignored)
78f81cc4 8589{
b21a15f6 8590 int rc;
18ad7996 8591
b21a15f6
HMH		 8592 if (tpacpi_lifecycle != TPACPI_LIFE_RUNNING)
8593 return;
a12095c2 8594
0978e012 8595 pr_notice("fan watchdog: enabling fan\n");
b21a15f6
HMH		 8596 rc = fan_set_enable();
8597 if (rc < 0) {
5cac62ac
AS		 8598 pr_err("fan watchdog: error %d while enabling fan, will try again later...\n",
8599 rc);
b21a15f6
HMH		 8600 /* reschedule for later */
8601 fan_watchdog_reset();
8602 }
8603}
eaa7571b 8604
b21a15f6
HMH		 8605/*
8606 * SYSFS fan layout: hwmon compatible (device)
8607 *
8608 * pwm*_enable:
8609 * 0: "disengaged" mode
8610 * 1: manual mode
8611 * 2: native EC "auto" mode (recommended, hardware default)
8612 *
8613 * pwm*: set speed in manual mode, ignored otherwise.
8614 * 0 is level 0; 255 is level 7. Intermediate points done with linear
8615 * interpolation.
8616 *
8617 * fan*_input: tachometer reading, RPM
8618 *
8619 *
8620 * SYSFS fan layout: extensions
8621 *
8622 * fan_watchdog (driver):
8623 * fan watchdog interval in seconds, 0 disables (default), max 120
8624 */
8625
8626/* sysfs fan pwm1_enable ----------------------------------------------- */
8627static ssize_t fan_pwm1_enable_show(struct device *dev,
8628 struct device_attribute *attr,
8629 char *buf)
8630{
8631 int res, mode;
8632 u8 status;
8633
8634 res = fan_get_status_safe(&status);
8635 if (res)
8636 return res;
8637
b21a15f6
HMH		 8638 if (status & TP_EC_FAN_FULLSPEED) {
8639 mode = 0;
8640 } else if (status & TP_EC_FAN_AUTO) {
8641 mode = 2;
8642 } else
8643 mode = 1;
8644
8645 return snprintf(buf, PAGE_SIZE, "%d\n", mode);
8646}
a12095c2 8647
b21a15f6
HMH		 8648static ssize_t fan_pwm1_enable_store(struct device *dev,
8649 struct device_attribute *attr,
8650 const char *buf, size_t count)
8651{
8652 unsigned long t;
8653 int res, level;
8654
8655 if (parse_strtoul(buf, 2, &t))
8656 return -EINVAL;
8657
74a60c0f
HMH		 8658 tpacpi_disclose_usertask("hwmon pwm1_enable",
8659 "set fan mode to %lu\n", t);
8660
b21a15f6
HMH		 8661 switch (t) {
8662 case 0:
8663 level = TP_EC_FAN_FULLSPEED;
8664 break;
8665 case 1:
8666 level = TPACPI_FAN_LAST_LEVEL;
8667 break;
8668 case 2:
8669 level = TP_EC_FAN_AUTO;
8670 break;
8671 case 3:
8672 /* reserved for software-controlled auto mode */
8673 return -ENOSYS;
18ad7996 8674 default:
b21a15f6 8675 return -EINVAL;
18ad7996 8676 }
b21a15f6
HMH		 8677
8678 res = fan_set_level_safe(level);
8679 if (res == -ENXIO)
8680 return -EINVAL;
8681 else if (res < 0)
8682 return res;
8683
8684 fan_watchdog_reset();
8685
8686 return count;
18ad7996
HMH		 8687}
8688
5fb73bc2
BM		 8689static DEVICE_ATTR(pwm1_enable, S_IWUSR | S_IRUGO,
8690 fan_pwm1_enable_show, fan_pwm1_enable_store);
b21a15f6
HMH		 8691
8692/* sysfs fan pwm1 ------------------------------------------------------ */
8693static ssize_t fan_pwm1_show(struct device *dev,
8694 struct device_attribute *attr,
8695 char *buf)
fe98a52c 8696{
b21a15f6
HMH		 8697 int res;
8698 u8 status;
fe98a52c 8699
b21a15f6
HMH		 8700 res = fan_get_status_safe(&status);
8701 if (res)
8702 return res;
ecf2a80a 8703
b21a15f6
HMH		 8704 if ((status &
8705 (TP_EC_FAN_AUTO | TP_EC_FAN_FULLSPEED)) != 0)
8706 status = fan_control_desired_level;
fe98a52c 8707
b21a15f6
HMH		 8708 if (status > 7)
8709 status = 7;
fe98a52c 8710
b21a15f6 8711 return snprintf(buf, PAGE_SIZE, "%u\n", (status * 255) / 7);
fe98a52c
HMH		 8712}
8713
b21a15f6
HMH		 8714static ssize_t fan_pwm1_store(struct device *dev,
8715 struct device_attribute *attr,
8716 const char *buf, size_t count)
18ad7996 8717{
b21a15f6 8718 unsigned long s;
1c6a334e 8719 int rc;
b21a15f6 8720 u8 status, newlevel;
1c6a334e 8721
b21a15f6
HMH		 8722 if (parse_strtoul(buf, 255, &s))
8723 return -EINVAL;
8724
74a60c0f
HMH		 8725 tpacpi_disclose_usertask("hwmon pwm1",
8726 "set fan speed to %lu\n", s);
8727
b21a15f6
HMH		 8728 /* scale down from 0-255 to 0-7 */
8729 newlevel = (s >> 5) & 0x07;
ecf2a80a 8730
7646ea88 8731 if (mutex_lock_killable(&fan_mutex))
fc589a3c 8732 return -ERESTARTSYS;
40ca9fdf 8733
b21a15f6
HMH		 8734 rc = fan_get_status(&status);
8735 if (!rc && (status &
8736 (TP_EC_FAN_AUTO | TP_EC_FAN_FULLSPEED)) == 0) {
8737 rc = fan_set_level(newlevel);
8738 if (rc == -ENXIO)
8739 rc = -EINVAL;
8740 else if (!rc) {
8741 fan_update_desired_level(newlevel);
8742 fan_watchdog_reset();
eaa7571b 8743 }
b21a15f6 8744 }
1c6a334e 8745
b21a15f6 8746 mutex_unlock(&fan_mutex);
72a979f0 8747 return (rc) ? rc : count;
b21a15f6 8748}
1c6a334e 8749
5fb73bc2 8750static DEVICE_ATTR(pwm1, S_IWUSR | S_IRUGO, fan_pwm1_show, fan_pwm1_store);
1c6a334e 8751
b21a15f6
HMH		 8752/* sysfs fan fan1_input ------------------------------------------------ */
8753static ssize_t fan_fan1_input_show(struct device *dev,
8754 struct device_attribute *attr,
8755 char *buf)
8756{
8757 int res;
8758 unsigned int speed;
1c6a334e 8759
b21a15f6
HMH		 8760 res = fan_get_speed(&speed);
8761 if (res < 0)
8762 return res;
1c6a334e 8763
b21a15f6
HMH		 8764 return snprintf(buf, PAGE_SIZE, "%u\n", speed);
8765}
18ad7996 8766
5fb73bc2 8767static DEVICE_ATTR(fan1_input, S_IRUGO, fan_fan1_input_show, NULL);
40ca9fdf 8768
d7377247
HMH		 8769/* sysfs fan fan2_input ------------------------------------------------ */
8770static ssize_t fan_fan2_input_show(struct device *dev,
8771 struct device_attribute *attr,
8772 char *buf)
8773{
8774 int res;
8775 unsigned int speed;
8776
8777 res = fan2_get_speed(&speed);
8778 if (res < 0)
8779 return res;
8780
8781 return snprintf(buf, PAGE_SIZE, "%u\n", speed);
8782}
8783
5fb73bc2 8784static DEVICE_ATTR(fan2_input, S_IRUGO, fan_fan2_input_show, NULL);
d7377247 8785
b21a15f6 8786/* sysfs fan fan_watchdog (hwmon driver) ------------------------------- */
ac3054c4 8787static ssize_t fan_watchdog_show(struct device_driver *drv, char *buf)
b21a15f6
HMH		 8788{
8789 return snprintf(buf, PAGE_SIZE, "%u\n", fan_watchdog_maxinterval);
18ad7996
HMH		 8790}
8791
ac3054c4
GKH		 8792static ssize_t fan_watchdog_store(struct device_driver *drv, const char *buf,
8793 size_t count)
18ad7996 8794{
b21a15f6
HMH		 8795 unsigned long t;
8796
8797 if (parse_strtoul(buf, 120, &t))
8798 return -EINVAL;
40ca9fdf 8799
ecf2a80a
HMH		 8800 if (!fan_control_allowed)
8801 return -EPERM;
8802
b21a15f6
HMH		 8803 fan_watchdog_maxinterval = t;
8804 fan_watchdog_reset();
40ca9fdf 8805
74a60c0f
HMH		 8806 tpacpi_disclose_usertask("fan_watchdog", "set to %lu\n", t);
8807
b21a15f6
HMH		 8808 return count;
8809}
ac3054c4 8810static DRIVER_ATTR_RW(fan_watchdog);
b21a15f6
HMH		 8811
8812/* --------------------------------------------------------------------- */
8813static struct attribute *fan_attributes[] = {
5fb73bc2
BM		 8814 &dev_attr_pwm1_enable.attr, &dev_attr_pwm1.attr,
8815 &dev_attr_fan1_input.attr,
d7377247 8816 NULL, /* for fan2_input */
b21a15f6
HMH		 8817 NULL
8818};
8819
8820static const struct attribute_group fan_attr_group = {
8821 .attrs = fan_attributes,
8822};
8823
599eefff 8824#define TPACPI_FAN_Q1 0x0001 /* Unitialized HFSP */
d7377247 8825#define TPACPI_FAN_2FAN 0x0002 /* EC 0x31 bit 0 selects fan2 */
14232c6e 8826#define TPACPI_FAN_2CTL 0x0004 /* selects fan2 control */
7d95a3d5 8827
7d95a3d5 8828static const struct tpacpi_quirk fan_quirk_table[] __initconst = {
599eefff
JW		 8829 TPACPI_QEC_IBM('1', 'Y', TPACPI_FAN_Q1),
8830 TPACPI_QEC_IBM('7', '8', TPACPI_FAN_Q1),
8831 TPACPI_QEC_IBM('7', '6', TPACPI_FAN_Q1),
8832 TPACPI_QEC_IBM('7', '0', TPACPI_FAN_Q1),
8833 TPACPI_QEC_LNV('7', 'M', TPACPI_FAN_2FAN),
8834 TPACPI_Q_LNV('N', '1', TPACPI_FAN_2FAN),
14232c6e
LH		 8835 TPACPI_Q_LNV3('N', '1', 'D', TPACPI_FAN_2CTL), /* P70 */
8836 TPACPI_Q_LNV3('N', '1', 'E', TPACPI_FAN_2CTL), /* P50 */
8837 TPACPI_Q_LNV3('N', '1', 'T', TPACPI_FAN_2CTL), /* P71 */
8838 TPACPI_Q_LNV3('N', '1', 'U', TPACPI_FAN_2CTL), /* P51 */
8839 TPACPI_Q_LNV3('N', '2', 'C', TPACPI_FAN_2CTL), /* P52 / P72 */
c47c0429 8840 TPACPI_Q_LNV3('N', '2', 'N', TPACPI_FAN_2CTL), /* P53 / P73 */
14232c6e
LH		 8841 TPACPI_Q_LNV3('N', '2', 'E', TPACPI_FAN_2CTL), /* P1 / X1 Extreme (1st gen) */
8842 TPACPI_Q_LNV3('N', '2', 'O', TPACPI_FAN_2CTL), /* P1 / X1 Extreme (2nd gen) */
c758be8e 8843 TPACPI_Q_LNV3('N', '2', 'V', TPACPI_FAN_2CTL), /* P1 / X1 Extreme (3nd gen) */
0bd90cba 8844 TPACPI_Q_LNV3('N', '4', '0', TPACPI_FAN_2CTL), /* P1 / X1 Extreme (4nd gen) */
e8637dfc 8845 TPACPI_Q_LNV3('N', '3', '0', TPACPI_FAN_2CTL), /* P15 (1st gen) / P15v (1st gen) */
25acf21f 8846 TPACPI_Q_LNV3('N', '3', '2', TPACPI_FAN_2CTL), /* X1 Carbon (9th gen) */
7d95a3d5
HMH		 8847};
8848
b21a15f6
HMH		 8849static int __init fan_init(struct ibm_init_struct *iibm)
8850{
8851 int rc;
7d95a3d5 8852 unsigned long quirks;
b21a15f6 8853
74a60c0f
HMH		 8854 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_FAN,
8855 "initializing fan subdriver\n");
b21a15f6
HMH		 8856
8857 mutex_init(&fan_mutex);
8858 fan_status_access_mode = TPACPI_FAN_NONE;
8859 fan_control_access_mode = TPACPI_FAN_WR_NONE;
8860 fan_control_commands = 0;
8861 fan_watchdog_maxinterval = 0;
8862 tp_features.fan_ctrl_status_undef = 0;
d7377247 8863 tp_features.second_fan = 0;
14232c6e 8864 tp_features.second_fan_ctl = 0;
b21a15f6
HMH		 8865 fan_control_desired_level = 7;
8866
e28393c0
HMH		 8867 if (tpacpi_is_ibm()) {
8868 TPACPI_ACPIHANDLE_INIT(fans);
8869 TPACPI_ACPIHANDLE_INIT(gfan);
8870 TPACPI_ACPIHANDLE_INIT(sfan);
8871 }
b21a15f6 8872
7d95a3d5
HMH		 8873 quirks = tpacpi_check_quirks(fan_quirk_table,
8874 ARRAY_SIZE(fan_quirk_table));
8875
b21a15f6
HMH		 8876 if (gfan_handle) {
8877 /* 570, 600e/x, 770e, 770x */
8878 fan_status_access_mode = TPACPI_FAN_RD_ACPI_GFAN;
8879 } else {
8880 /* all other ThinkPads: note that even old-style
8881 * ThinkPad ECs supports the fan control register */
8882 if (likely(acpi_ec_read(fan_status_offset,
8883 &fan_control_initial_status))) {
8884 fan_status_access_mode = TPACPI_FAN_RD_TPEC;
7d95a3d5
HMH		 8885 if (quirks & TPACPI_FAN_Q1)
8886 fan_quirk1_setup();
d7377247
HMH		 8887 if (quirks & TPACPI_FAN_2FAN) {
8888 tp_features.second_fan = 1;
14232c6e
LH		 8889 pr_info("secondary fan support enabled\n");
8890 }
8891 if (quirks & TPACPI_FAN_2CTL) {
8892 tp_features.second_fan = 1;
8893 tp_features.second_fan_ctl = 1;
8894 pr_info("secondary fan control enabled\n");
d7377247 8895 }
b21a15f6 8896 } else {
5cac62ac 8897 pr_err("ThinkPad ACPI EC access misbehaving, fan status and control unavailable\n");
b21a15f6
HMH		 8898 return 1;
8899 }
8900 }
8901
8902 if (sfan_handle) {
8903 /* 570, 770x-JL */
8904 fan_control_access_mode = TPACPI_FAN_WR_ACPI_SFAN;
8905 fan_control_commands |=
8906 TPACPI_FAN_CMD_LEVEL | TPACPI_FAN_CMD_ENABLE;
8907 } else {
8908 if (!gfan_handle) {
8909 /* gfan without sfan means no fan control */
8910 /* all other models implement TP EC 0x2f control */
8911
8912 if (fans_handle) {
8913 /* X31, X40, X41 */
8914 fan_control_access_mode =
8915 TPACPI_FAN_WR_ACPI_FANS;
8916 fan_control_commands |=
8917 TPACPI_FAN_CMD_SPEED |
8918 TPACPI_FAN_CMD_LEVEL |
8919 TPACPI_FAN_CMD_ENABLE;
8920 } else {
8921 fan_control_access_mode = TPACPI_FAN_WR_TPEC;
8922 fan_control_commands |=
8923 TPACPI_FAN_CMD_LEVEL |
8924 TPACPI_FAN_CMD_ENABLE;
8925 }
fe98a52c 8926 }
b21a15f6 8927 }
18ad7996 8928
74a60c0f
HMH		 8929 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_FAN,
8930 "fan is %s, modes %d, %d\n",
b21a15f6
HMH		 8931 str_supported(fan_status_access_mode != TPACPI_FAN_NONE ||
8932 fan_control_access_mode != TPACPI_FAN_WR_NONE),
8933 fan_status_access_mode, fan_control_access_mode);
1c6a334e 8934
b21a15f6
HMH		 8935 /* fan control master switch */
8936 if (!fan_control_allowed) {
8937 fan_control_access_mode = TPACPI_FAN_WR_NONE;
8938 fan_control_commands = 0;
74a60c0f 8939 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_FAN,
b21a15f6 8940 "fan control features disabled by parameter\n");
18ad7996 8941 }
40ca9fdf 8942
b21a15f6
HMH		 8943 /* update fan_control_desired_level */
8944 if (fan_status_access_mode != TPACPI_FAN_NONE)
8945 fan_get_status_safe(NULL);
fe98a52c 8946
b21a15f6
HMH		 8947 if (fan_status_access_mode != TPACPI_FAN_NONE ||
8948 fan_control_access_mode != TPACPI_FAN_WR_NONE) {
d7377247
HMH		 8949 if (tp_features.second_fan) {
8950 /* attach second fan tachometer */
8951 fan_attributes[ARRAY_SIZE(fan_attributes)-2] =
5fb73bc2 8952 &dev_attr_fan2_input.attr;
d7377247 8953 }
6b99e356 8954 rc = sysfs_create_group(&tpacpi_hwmon->kobj,
b21a15f6 8955 &fan_attr_group);
b21a15f6
HMH		 8956 if (rc < 0)
8957 return rc;
9c0a76e1
HMH		 8958
8959 rc = driver_create_file(&tpacpi_hwmon_pdriver.driver,
8960 &driver_attr_fan_watchdog);
8961 if (rc < 0) {
6b99e356 8962 sysfs_remove_group(&tpacpi_hwmon->kobj,
9c0a76e1
HMH		 8963 &fan_attr_group);
8964 return rc;
8965 }
b21a15f6
HMH		 8966 return 0;
8967 } else
8968 return 1;
56b6aeb0
HMH		 8969}
8970
b21a15f6 8971static void fan_exit(void)
56b6aeb0 8972{
74a60c0f 8973 vdbg_printk(TPACPI_DBG_EXIT | TPACPI_DBG_FAN,
35ff8b9f 8974 "cancelling any pending fan watchdog tasks\n");
56b6aeb0 8975
b21a15f6 8976 /* FIXME: can we really do this unconditionally? */
6b99e356 8977 sysfs_remove_group(&tpacpi_hwmon->kobj, &fan_attr_group);
35ff8b9f
HMH		 8978 driver_remove_file(&tpacpi_hwmon_pdriver.driver,
8979 &driver_attr_fan_watchdog);
40ca9fdf 8980
b21a15f6 8981 cancel_delayed_work(&fan_watchdog_task);
e0e3c061 8982 flush_workqueue(tpacpi_wq);
56b6aeb0
HMH		 8983}
8984
fd3c3a42 8985static void fan_suspend(void)
75700e53 8986{
0081b162
HMH		 8987 int rc;
8988
75700e53
HMH		 8989 if (!fan_control_allowed)
8990 return;
8991
8992 /* Store fan status in cache */
0081b162
HMH		 8993 fan_control_resume_level = 0;
8994 rc = fan_get_status_safe(&fan_control_resume_level);
8995 if (rc < 0)
5cac62ac
AS		 8996 pr_notice("failed to read fan level for later restore during resume: %d\n",
8997 rc);
0081b162
HMH		 8998
8999 /* if it is undefined, don't attempt to restore it.
9000 * KEEP THIS LAST */
75700e53 9001 if (tp_features.fan_ctrl_status_undef)
0081b162 9002 fan_control_resume_level = 0;
75700e53
HMH		 9003}
9004
9005static void fan_resume(void)
9006{
75700e53
HMH		 9007 u8 current_level = 7;
9008 bool do_set = false;
0081b162 9009 int rc;
75700e53
HMH		 9010
9011 /* DSDT *always* updates status on resume */
9012 tp_features.fan_ctrl_status_undef = 0;
9013
75700e53 9014 if (!fan_control_allowed ||
0081b162 9015 !fan_control_resume_level ||
75700e53
HMH		 9016 (fan_get_status_safe(&current_level) < 0))
9017 return;
9018
9019 switch (fan_control_access_mode) {
9020 case TPACPI_FAN_WR_ACPI_SFAN:
0081b162
HMH		 9021 /* never decrease fan level */
9022 do_set = (fan_control_resume_level > current_level);
75700e53
HMH		 9023 break;
9024 case TPACPI_FAN_WR_ACPI_FANS:
9025 case TPACPI_FAN_WR_TPEC:
0081b162
HMH		 9026 /* never decrease fan level, scale is:
9027 * TP_EC_FAN_FULLSPEED > 7 >= TP_EC_FAN_AUTO
9028 *
9029 * We expect the firmware to set either 7 or AUTO, but we
9030 * handle FULLSPEED out of paranoia.
9031 *
9032 * So, we can safely only restore FULLSPEED or 7, anything
9033 * else could slow the fan. Restoring AUTO is useless, at
9034 * best that's exactly what the DSDT already set (it is the
9035 * slower it uses).
9036 *
9037 * Always keep in mind that the DSDT *will* have set the
9038 * fans to what the vendor supposes is the best level. We
9039 * muck with it only to speed the fan up.
9040 */
9041 if (fan_control_resume_level != 7 &&
9042 !(fan_control_resume_level & TP_EC_FAN_FULLSPEED))
9043 return;
9044 else
9045 do_set = !(current_level & TP_EC_FAN_FULLSPEED) &&
9046 (current_level != fan_control_resume_level);
75700e53
HMH		 9047 break;
9048 default:
9049 return;
9050 }
9051 if (do_set) {
0978e012
JP		 9052 pr_notice("restoring fan level to 0x%02x\n",
9053 fan_control_resume_level);
0081b162
HMH		 9054 rc = fan_set_level_safe(fan_control_resume_level);
9055 if (rc < 0)
0978e012 9056 pr_notice("failed to restore fan level: %d\n", rc);
75700e53
HMH		 9057 }
9058}
9059
887965e6 9060static int fan_read(struct seq_file *m)
56b6aeb0 9061{
56b6aeb0
HMH		 9062 int rc;
9063 u8 status;
9064 unsigned int speed = 0;
9065
9066 switch (fan_status_access_mode) {
efa27145 9067 case TPACPI_FAN_RD_ACPI_GFAN:
56b6aeb0 9068 /* 570, 600e/x, 770e, 770x */
35ff8b9f
HMH		 9069 rc = fan_get_status_safe(&status);
9070 if (rc < 0)
56b6aeb0
HMH		 9071 return rc;
9072
887965e6 9073 seq_printf(m, "status:\t\t%s\n"
56b6aeb0
HMH		 9074 "level:\t\t%d\n",
9075 (status != 0) ? "enabled" : "disabled", status);
9076 break;
9077
efa27145 9078 case TPACPI_FAN_RD_TPEC:
56b6aeb0 9079 /* all except 570, 600e/x, 770e, 770x */
35ff8b9f
HMH		 9080 rc = fan_get_status_safe(&status);
9081 if (rc < 0)
56b6aeb0
HMH		 9082 return rc;
9083
887965e6 9084 seq_printf(m, "status:\t\t%s\n",
56b6aeb0
HMH		 9085 (status != 0) ? "enabled" : "disabled");
9086
35ff8b9f
HMH		 9087 rc = fan_get_speed(&speed);
9088 if (rc < 0)
56b6aeb0
HMH		 9089 return rc;
9090
887965e6 9091 seq_printf(m, "speed:\t\t%d\n", speed);
56b6aeb0 9092
efa27145 9093 if (status & TP_EC_FAN_FULLSPEED)
56b6aeb0 9094 /* Disengaged mode takes precedence */
887965e6 9095 seq_printf(m, "level:\t\tdisengaged\n");
efa27145 9096 else if (status & TP_EC_FAN_AUTO)
887965e6 9097 seq_printf(m, "level:\t\tauto\n");
56b6aeb0 9098 else
887965e6 9099 seq_printf(m, "level:\t\t%d\n", status);
56b6aeb0
HMH		 9100 break;
9101
efa27145 9102 case TPACPI_FAN_NONE:
56b6aeb0 9103 default:
887965e6 9104 seq_printf(m, "status:\t\tnot supported\n");
56b6aeb0
HMH		 9105 }
9106
efa27145 9107 if (fan_control_commands & TPACPI_FAN_CMD_LEVEL) {
887965e6 9108 seq_printf(m, "commands:\tlevel <level>");
56b6aeb0
HMH		 9109
9110 switch (fan_control_access_mode) {
efa27145 9111 case TPACPI_FAN_WR_ACPI_SFAN:
887965e6 9112 seq_printf(m, " (<level> is 0-7)\n");
56b6aeb0
HMH		 9113 break;
9114
9115 default:
5cac62ac 9116 seq_printf(m, " (<level> is 0-7, auto, disengaged, full-speed)\n");
56b6aeb0
HMH		 9117 break;
9118 }
9119 }
18ad7996 9120
efa27145 9121 if (fan_control_commands & TPACPI_FAN_CMD_ENABLE)
887965e6 9122 seq_printf(m, "commands:\tenable, disable\n"
5cac62ac 9123 "commands:\twatchdog <timeout> (<timeout> is 0 (off), 1-120 (seconds))\n");
1da177e4 9124
efa27145 9125 if (fan_control_commands & TPACPI_FAN_CMD_SPEED)
5cac62ac 9126 seq_printf(m, "commands:\tspeed <speed> (<speed> is 0-65535)\n");
56b6aeb0 9127
887965e6 9128 return 0;
78f81cc4
BD		 9129}
9130
18ad7996
HMH		 9131static int fan_write_cmd_level(const char *cmd, int *rc)
9132{
9133 int level;
9134
a12095c2 9135 if (strlencmp(cmd, "level auto") == 0)
efa27145 9136 level = TP_EC_FAN_AUTO;
dc76ec33 9137 else if ((strlencmp(cmd, "level disengaged") == 0) ||
35ff8b9f 9138 (strlencmp(cmd, "level full-speed") == 0))
efa27145 9139 level = TP_EC_FAN_FULLSPEED;
a12095c2 9140 else if (sscanf(cmd, "level %d", &level) != 1)
18ad7996
HMH		 9141 return 0;
9142
35ff8b9f
HMH		 9143 *rc = fan_set_level_safe(level);
9144 if (*rc == -ENXIO)
0978e012
JP		 9145 pr_err("level command accepted for unsupported access mode %d\n",
9146 fan_control_access_mode);
74a60c0f
HMH		 9147 else if (!*rc)
9148 tpacpi_disclose_usertask("procfs fan",
9149 "set level to %d\n", level);
18ad7996
HMH		 9150
9151 return 1;
9152}
9153
9154static int fan_write_cmd_enable(const char *cmd, int *rc)
9155{
9156 if (strlencmp(cmd, "enable") != 0)
9157 return 0;
9158
35ff8b9f
HMH		 9159 *rc = fan_set_enable();
9160 if (*rc == -ENXIO)
0978e012
JP		 9161 pr_err("enable command accepted for unsupported access mode %d\n",
9162 fan_control_access_mode);
74a60c0f
HMH		 9163 else if (!*rc)
9164 tpacpi_disclose_usertask("procfs fan", "enable\n");
18ad7996
HMH		 9165
9166 return 1;
9167}
9168
9169static int fan_write_cmd_disable(const char *cmd, int *rc)
9170{
9171 if (strlencmp(cmd, "disable") != 0)
9172 return 0;
9173
35ff8b9f
HMH		 9174 *rc = fan_set_disable();
9175 if (*rc == -ENXIO)
0978e012
JP		 9176 pr_err("disable command accepted for unsupported access mode %d\n",
9177 fan_control_access_mode);
74a60c0f
HMH		 9178 else if (!*rc)
9179 tpacpi_disclose_usertask("procfs fan", "disable\n");
18ad7996
HMH		 9180
9181 return 1;
9182}
9183
9184static int fan_write_cmd_speed(const char *cmd, int *rc)
9185{
9186 int speed;
9187
a8b7a662
HMH		 9188 /* TODO:
9189 * Support speed <low> <medium> <high> ? */
9190
18ad7996
HMH		 9191 if (sscanf(cmd, "speed %d", &speed) != 1)
9192 return 0;
9193
35ff8b9f
HMH		 9194 *rc = fan_set_speed(speed);
9195 if (*rc == -ENXIO)
0978e012
JP		 9196 pr_err("speed command accepted for unsupported access mode %d\n",
9197 fan_control_access_mode);
74a60c0f
HMH		 9198 else if (!*rc)
9199 tpacpi_disclose_usertask("procfs fan",
9200 "set speed to %d\n", speed);
18ad7996
HMH		 9201
9202 return 1;
9203}
9204
16663a87
HMH		 9205static int fan_write_cmd_watchdog(const char *cmd, int *rc)
9206{
9207 int interval;
9208
9209 if (sscanf(cmd, "watchdog %d", &interval) != 1)
9210 return 0;
9211
9212 if (interval < 0 || interval > 120)
9213 *rc = -EINVAL;
74a60c0f 9214 else {
16663a87 9215 fan_watchdog_maxinterval = interval;
74a60c0f
HMH		 9216 tpacpi_disclose_usertask("procfs fan",
9217 "set watchdog timer to %d\n",
9218 interval);
9219 }
16663a87
HMH		 9220
9221 return 1;
9222}
9223
18ad7996
HMH		 9224static int fan_write(char *buf)
9225{
9226 char *cmd;
9227 int rc = 0;
9228
be51bd45 9229 while (!rc && (cmd = strsep(&buf, ","))) {
efa27145 9230 if (!((fan_control_commands & TPACPI_FAN_CMD_LEVEL) &&
18ad7996 9231 fan_write_cmd_level(cmd, &rc)) &&
efa27145 9232 !((fan_control_commands & TPACPI_FAN_CMD_ENABLE) &&
18ad7996 9233 (fan_write_cmd_enable(cmd, &rc) ||
16663a87
HMH		 9234 fan_write_cmd_disable(cmd, &rc) ||
9235 fan_write_cmd_watchdog(cmd, &rc))) &&
efa27145 9236 !((fan_control_commands & TPACPI_FAN_CMD_SPEED) &&
18ad7996
HMH		 9237 fan_write_cmd_speed(cmd, &rc))
9238 )
9239 rc = -EINVAL;
16663a87
HMH		 9240 else if (!rc)
9241 fan_watchdog_reset();
18ad7996
HMH		 9242 }
9243
9244 return rc;
9245}
9246
a5763f22
HMH		 9247static struct ibm_struct fan_driver_data = {
9248 .name = "fan",
9249 .read = fan_read,
9250 .write = fan_write,
9251 .exit = fan_exit,
75700e53
HMH		 9252 .suspend = fan_suspend,
9253 .resume = fan_resume,
a5763f22
HMH		 9254};
9255
420f9739
DH		 9256/*************************************************************************
9257 * Mute LED subdriver
9258 */
9259
9e908a18 9260#define TPACPI_LED_MAX 2
420f9739
DH		 9261
9262struct tp_led_table {
9263 acpi_string name;
9264 int on_value;
9265 int off_value;
9266 int state;
9267};
9268
9e908a18
TI		 9269static struct tp_led_table led_tables[TPACPI_LED_MAX] = {
9270 [LED_AUDIO_MUTE] = {
420f9739
DH		 9271 .name = "SSMS",
9272 .on_value = 1,
9273 .off_value = 0,
9274 },
9e908a18 9275 [LED_AUDIO_MICMUTE] = {
420f9739
DH		 9276 .name = "MMTS",
9277 .on_value = 2,
9278 .off_value = 0,
9279 },
9280};
9281
9282static int mute_led_on_off(struct tp_led_table *t, bool state)
9283{
9284 acpi_handle temp;
9285 int output;
9286
3526ecad 9287 if (ACPI_FAILURE(acpi_get_handle(hkey_handle, t->name, &temp))) {
420f9739
DH		 9288 pr_warn("Thinkpad ACPI has no %s interface.\n", t->name);
9289 return -EIO;
9290 }
9291
9292 if (!acpi_evalf(hkey_handle, &output, t->name, "dd",
9293 state ? t->on_value : t->off_value))
9294 return -EIO;
9295
9296 t->state = state;
9297 return state;
9298}
9299
9e908a18 9300static int tpacpi_led_set(int whichled, bool on)
420f9739
DH		 9301{
9302 struct tp_led_table *t;
9303
420f9739
DH		 9304 t = &led_tables[whichled];
9305 if (t->state < 0 || t->state == on)
9306 return t->state;
9307 return mute_led_on_off(t, on);
9308}
420f9739 9309
4e1d0924
TI		 9310static int tpacpi_led_mute_set(struct led_classdev *led_cdev,
9311 enum led_brightness brightness)
9312{
9e908a18 9313 return tpacpi_led_set(LED_AUDIO_MUTE, brightness != LED_OFF);
4e1d0924
TI		 9314}
9315
9316static int tpacpi_led_micmute_set(struct led_classdev *led_cdev,
9317 enum led_brightness brightness)
9318{
9e908a18 9319 return tpacpi_led_set(LED_AUDIO_MICMUTE, brightness != LED_OFF);
4e1d0924
TI		 9320}
9321
9e908a18
TI		 9322static struct led_classdev mute_led_cdev[TPACPI_LED_MAX] = {
9323 [LED_AUDIO_MUTE] = {
4e1d0924
TI		 9324 .name = "platform::mute",
9325 .max_brightness = 1,
9326 .brightness_set_blocking = tpacpi_led_mute_set,
9327 .default_trigger = "audio-mute",
9328 },
9e908a18 9329 [LED_AUDIO_MICMUTE] = {
4e1d0924
TI		 9330 .name = "platform::micmute",
9331 .max_brightness = 1,
9332 .brightness_set_blocking = tpacpi_led_micmute_set,
9333 .default_trigger = "audio-micmute",
9334 },
9335};
420f9739
DH		 9336
9337static int mute_led_init(struct ibm_init_struct *iibm)
9338{
9339 acpi_handle temp;
4e1d0924 9340 int i, err;
420f9739
DH		 9341
9342 for (i = 0; i < TPACPI_LED_MAX; i++) {
9343 struct tp_led_table *t = &led_tables[i];
4e1d0924 9344 if (ACPI_FAILURE(acpi_get_handle(hkey_handle, t->name, &temp))) {
420f9739 9345 t->state = -ENODEV;
4e1d0924
TI		 9346 continue;
9347 }
9348
9e908a18 9349 mute_led_cdev[i].brightness = ledtrig_audio_get(i);
4e1d0924
TI		 9350 err = led_classdev_register(&tpacpi_pdev->dev, &mute_led_cdev[i]);
9351 if (err < 0) {
41f80046
AS		 9352 while (i--)
9353 led_classdev_unregister(&mute_led_cdev[i]);
4e1d0924
TI		 9354 return err;
9355 }
420f9739
DH		 9356 }
9357 return 0;
9358}
9359
9360static void mute_led_exit(void)
9361{
9362 int i;
9363
4e1d0924 9364 for (i = 0; i < TPACPI_LED_MAX; i++) {
41f80046
AS		 9365 led_classdev_unregister(&mute_led_cdev[i]);
9366 tpacpi_led_set(i, false);
4e1d0924 9367 }
420f9739
DH		 9368}
9369
119f4498
TI		 9370static void mute_led_resume(void)
9371{
9372 int i;
9373
9374 for (i = 0; i < TPACPI_LED_MAX; i++) {
9375 struct tp_led_table *t = &led_tables[i];
9376 if (t->state >= 0)
9377 mute_led_on_off(t, t->state);
9378 }
9379}
9380
420f9739
DH		 9381static struct ibm_struct mute_led_driver_data = {
9382 .name = "mute_led",
9383 .exit = mute_led_exit,
119f4498 9384 .resume = mute_led_resume,
420f9739
DH		 9385};
9386
2801b968
OG		 9387/*
9388 * Battery Wear Control Driver
9389 * Contact: Ognjen Galic <smclt30p@gmail.com>
9390 */
9391
9392/* Metadata */
9393
9394#define GET_START "BCTG"
9395#define SET_START "BCCS"
9396#define GET_STOP "BCSG"
9397#define SET_STOP "BCSS"
9398
2801b968
OG		 9399enum {
9400 BAT_ANY = 0,
9401 BAT_PRIMARY = 1,
9402 BAT_SECONDARY = 2
9403};
9404
9405enum {
9406 /* Error condition bit */
9407 METHOD_ERR = BIT(31),
9408};
9409
9410enum {
9411 /* This is used in the get/set helpers */
9412 THRESHOLD_START,
9413 THRESHOLD_STOP,
9414};
9415
9416struct tpacpi_battery_data {
9417 int charge_start;
9418 int start_support;
9419 int charge_stop;
9420 int stop_support;
9421};
9422
9423struct tpacpi_battery_driver_data {
9424 struct tpacpi_battery_data batteries[3];
9425 int individual_addressing;
9426};
9427
9428static struct tpacpi_battery_driver_data battery_info;
9429
9430/* ACPI helpers/functions/probes */
9431
9432/**
9433 * This evaluates a ACPI method call specific to the battery
9434 * ACPI extension. The specifics are that an error is marked
9435 * in the 32rd bit of the response, so we just check that here.
9436 */
9437static acpi_status tpacpi_battery_acpi_eval(char *method, int *ret, int param)
9438{
9439 int response;
9440
9441 if (!acpi_evalf(hkey_handle, &response, method, "dd", param)) {
9442 acpi_handle_err(hkey_handle, "%s: evaluate failed", method);
9443 return AE_ERROR;
9444 }
9445 if (response & METHOD_ERR) {
9446 acpi_handle_err(hkey_handle,
9447 "%s evaluated but flagged as error", method);
9448 return AE_ERROR;
9449 }
9450 *ret = response;
9451 return AE_OK;
9452}
9453
9454static int tpacpi_battery_get(int what, int battery, int *ret)
9455{
9456 switch (what) {
9457 case THRESHOLD_START:
9458 if ACPI_FAILURE(tpacpi_battery_acpi_eval(GET_START, ret, battery))
9459 return -ENODEV;
9460
9461 /* The value is in the low 8 bits of the response */
9462 *ret = *ret & 0xFF;
9463 return 0;
9464 case THRESHOLD_STOP:
9465 if ACPI_FAILURE(tpacpi_battery_acpi_eval(GET_STOP, ret, battery))
9466 return -ENODEV;
9467 /* Value is in lower 8 bits */
9468 *ret = *ret & 0xFF;
9469 /*
9470 * On the stop value, if we return 0 that
9471 * does not make any sense. 0 means Default, which
9472 * means that charging stops at 100%, so we return
9473 * that.
9474 */
9475 if (*ret == 0)
9476 *ret = 100;
9477 return 0;
9478 default:
9479 pr_crit("wrong parameter: %d", what);
9480 return -EINVAL;
9481 }
9482}
9483
9484static int tpacpi_battery_set(int what, int battery, int value)
9485{
9486 int param, ret;
9487 /* The first 8 bits are the value of the threshold */
9488 param = value;
9489 /* The battery ID is in bits 8-9, 2 bits */
9490 param |= battery << 8;
9491
9492 switch (what) {
9493 case THRESHOLD_START:
9494 if ACPI_FAILURE(tpacpi_battery_acpi_eval(SET_START, &ret, param)) {
9495 pr_err("failed to set charge threshold on battery %d",
9496 battery);
9497 return -ENODEV;
9498 }
9499 return 0;
9500 case THRESHOLD_STOP:
9501 if ACPI_FAILURE(tpacpi_battery_acpi_eval(SET_STOP, &ret, param)) {
9502 pr_err("failed to set stop threshold: %d", battery);
9503 return -ENODEV;
9504 }
9505 return 0;
9506 default:
9507 pr_crit("wrong parameter: %d", what);
9508 return -EINVAL;
9509 }
9510}
9511
9512static int tpacpi_battery_probe(int battery)
9513{
9514 int ret = 0;
9515
d22296d9
TW		 9516 memset(&battery_info.batteries[battery], 0,
9517 sizeof(battery_info.batteries[battery]));
9518
2801b968
OG		 9519 /*
9520 * 1) Get the current start threshold
9521 * 2) Check for support
9522 * 3) Get the current stop threshold
9523 * 4) Check for support
9524 */
9525 if (acpi_has_method(hkey_handle, GET_START)) {
9526 if ACPI_FAILURE(tpacpi_battery_acpi_eval(GET_START, &ret, battery)) {
9527 pr_err("Error probing battery %d\n", battery);
9528 return -ENODEV;
9529 }
9530 /* Individual addressing is in bit 9 */
9531 if (ret & BIT(9))
9532 battery_info.individual_addressing = true;
9533 /* Support is marked in bit 8 */
9534 if (ret & BIT(8))
9535 battery_info.batteries[battery].start_support = 1;
9536 else
9537 return -ENODEV;
9538 if (tpacpi_battery_get(THRESHOLD_START, battery,
9539 &battery_info.batteries[battery].charge_start)) {
9540 pr_err("Error probing battery %d\n", battery);
9541 return -ENODEV;
9542 }
9543 }
9544 if (acpi_has_method(hkey_handle, GET_STOP)) {
9545 if ACPI_FAILURE(tpacpi_battery_acpi_eval(GET_STOP, &ret, battery)) {
9546 pr_err("Error probing battery stop; %d\n", battery);
9547 return -ENODEV;
9548 }
9549 /* Support is marked in bit 8 */
9550 if (ret & BIT(8))
9551 battery_info.batteries[battery].stop_support = 1;
9552 else
9553 return -ENODEV;
9554 if (tpacpi_battery_get(THRESHOLD_STOP, battery,
9555 &battery_info.batteries[battery].charge_stop)) {
9556 pr_err("Error probing battery stop: %d\n", battery);
9557 return -ENODEV;
9558 }
9559 }
9560 pr_info("battery %d registered (start %d, stop %d)",
9561 battery,
9562 battery_info.batteries[battery].charge_start,
9563 battery_info.batteries[battery].charge_stop);
9564
9565 return 0;
9566}
9567
9568/* General helper functions */
9569
9570static int tpacpi_battery_get_id(const char *battery_name)
9571{
9572
1a32ebb2
JW		 9573 if (strcmp(battery_name, "BAT0") == 0 ||
9574 tp_features.battery_force_primary)
2801b968
OG		 9575 return BAT_PRIMARY;
9576 if (strcmp(battery_name, "BAT1") == 0)
9577 return BAT_SECONDARY;
9578 /*
9579 * If for some reason the battery is not BAT0 nor is it
9580 * BAT1, we will assume it's the default, first battery,
9581 * AKA primary.
9582 */
9583 pr_warn("unknown battery %s, assuming primary", battery_name);
9584 return BAT_PRIMARY;
9585}
9586
9587/* sysfs interface */
9588
9589static ssize_t tpacpi_battery_store(int what,
9590 struct device *dev,
9591 const char *buf, size_t count)
9592{
9593 struct power_supply *supply = to_power_supply(dev);
9594 unsigned long value;
9595 int battery, rval;
9596 /*
9597 * Some systems have support for more than
9598 * one battery. If that is the case,
9599 * tpacpi_battery_probe marked that addressing
9600 * them individually is supported, so we do that
9601 * based on the device struct.
9602 *
9603 * On systems that are not supported, we assume
9604 * the primary as most of the ACPI calls fail
9605 * with "Any Battery" as the parameter.
9606 */
9607 if (battery_info.individual_addressing)
9608 /* BAT_PRIMARY or BAT_SECONDARY */
9609 battery = tpacpi_battery_get_id(supply->desc->name);
9610 else
9611 battery = BAT_PRIMARY;
9612
9613 rval = kstrtoul(buf, 10, &value);
9614 if (rval)
9615 return rval;
9616
9617 switch (what) {
9618 case THRESHOLD_START:
9619 if (!battery_info.batteries[battery].start_support)
9620 return -ENODEV;
9621 /* valid values are [0, 99] */
b991178f 9622 if (value > 99)
2801b968
OG		 9623 return -EINVAL;
9624 if (value > battery_info.batteries[battery].charge_stop)
9625 return -EINVAL;
9626 if (tpacpi_battery_set(THRESHOLD_START, battery, value))
9627 return -ENODEV;
9628 battery_info.batteries[battery].charge_start = value;
9629 return count;
9630
9631 case THRESHOLD_STOP:
9632 if (!battery_info.batteries[battery].stop_support)
9633 return -ENODEV;
9634 /* valid values are [1, 100] */
9635 if (value < 1 || value > 100)
9636 return -EINVAL;
9637 if (value < battery_info.batteries[battery].charge_start)
9638 return -EINVAL;
9639 battery_info.batteries[battery].charge_stop = value;
9640 /*
9641 * When 100 is passed to stop, we need to flip
9642 * it to 0 as that the EC understands that as
9643 * "Default", which will charge to 100%
9644 */
9645 if (value == 100)
9646 value = 0;
9647 if (tpacpi_battery_set(THRESHOLD_STOP, battery, value))
9648 return -EINVAL;
9649 return count;
9650 default:
9651 pr_crit("Wrong parameter: %d", what);
9652 return -EINVAL;
9653 }
9654 return count;
9655}
9656
9657static ssize_t tpacpi_battery_show(int what,
9658 struct device *dev,
9659 char *buf)
9660{
9661 struct power_supply *supply = to_power_supply(dev);
9662 int ret, battery;
9663 /*
9664 * Some systems have support for more than
9665 * one battery. If that is the case,
9666 * tpacpi_battery_probe marked that addressing
9667 * them individually is supported, so we;
9668 * based on the device struct.
9669 *
9670 * On systems that are not supported, we assume
9671 * the primary as most of the ACPI calls fail
9672 * with "Any Battery" as the parameter.
9673 */
9674 if (battery_info.individual_addressing)
9675 /* BAT_PRIMARY or BAT_SECONDARY */
9676 battery = tpacpi_battery_get_id(supply->desc->name);
9677 else
9678 battery = BAT_PRIMARY;
9679 if (tpacpi_battery_get(what, battery, &ret))
9680 return -ENODEV;
9681 return sprintf(buf, "%d\n", ret);
9682}
9683
e3392953 9684static ssize_t charge_control_start_threshold_show(struct device *device,
2801b968
OG		 9685 struct device_attribute *attr,
9686 char *buf)
9687{
9688 return tpacpi_battery_show(THRESHOLD_START, device, buf);
9689}
9690
e3392953 9691static ssize_t charge_control_end_threshold_show(struct device *device,
2801b968
OG		 9692 struct device_attribute *attr,
9693 char *buf)
9694{
9695 return tpacpi_battery_show(THRESHOLD_STOP, device, buf);
9696}
9697
e3392953 9698static ssize_t charge_control_start_threshold_store(struct device *dev,
2801b968
OG		 9699 struct device_attribute *attr,
9700 const char *buf, size_t count)
9701{
9702 return tpacpi_battery_store(THRESHOLD_START, dev, buf, count);
9703}
9704
e3392953 9705static ssize_t charge_control_end_threshold_store(struct device *dev,
2801b968
OG		 9706 struct device_attribute *attr,
9707 const char *buf, size_t count)
9708{
9709 return tpacpi_battery_store(THRESHOLD_STOP, dev, buf, count);
9710}
9711
e3392953
TW		 9712static DEVICE_ATTR_RW(charge_control_start_threshold);
9713static DEVICE_ATTR_RW(charge_control_end_threshold);
066d7f32 9714static struct device_attribute dev_attr_charge_start_threshold = __ATTR(
e3392953
TW		 9715 charge_start_threshold,
9716 0644,
9717 charge_control_start_threshold_show,
9718 charge_control_start_threshold_store
9719);
066d7f32 9720static struct device_attribute dev_attr_charge_stop_threshold = __ATTR(
e3392953
TW		 9721 charge_stop_threshold,
9722 0644,
9723 charge_control_end_threshold_show,
9724 charge_control_end_threshold_store
9725);
2801b968
OG		 9726
9727static struct attribute *tpacpi_battery_attrs[] = {
e3392953
TW		 9728 &dev_attr_charge_control_start_threshold.attr,
9729 &dev_attr_charge_control_end_threshold.attr,
2801b968
OG		 9730 &dev_attr_charge_start_threshold.attr,
9731 &dev_attr_charge_stop_threshold.attr,
9732 NULL,
9733};
9734
9735ATTRIBUTE_GROUPS(tpacpi_battery);
9736
9737/* ACPI battery hooking */
9738
9739static int tpacpi_battery_add(struct power_supply *battery)
9740{
9741 int batteryid = tpacpi_battery_get_id(battery->desc->name);
9742
9743 if (tpacpi_battery_probe(batteryid))
9744 return -ENODEV;
9745 if (device_add_groups(&battery->dev, tpacpi_battery_groups))
9746 return -ENODEV;
9747 return 0;
9748}
9749
9750static int tpacpi_battery_remove(struct power_supply *battery)
9751{
9752 device_remove_groups(&battery->dev, tpacpi_battery_groups);
9753 return 0;
9754}
9755
9756static struct acpi_battery_hook battery_hook = {
9757 .add_battery = tpacpi_battery_add,
9758 .remove_battery = tpacpi_battery_remove,
9759 .name = "ThinkPad Battery Extension",
9760};
9761
9762/* Subdriver init/exit */
9763
1a32ebb2
JW		 9764static const struct tpacpi_quirk battery_quirk_table[] __initconst = {
9765 /*
9766 * Individual addressing is broken on models that expose the
9767 * primary battery as BAT1.
9768 */
6640ee62
JW		 9769 TPACPI_Q_LNV('J', '7', true), /* B5400 */
9770 TPACPI_Q_LNV('J', 'I', true), /* Thinkpad 11e */
9771 TPACPI_Q_LNV3('R', '0', 'B', true), /* Thinkpad 11e gen 3 */
1a32ebb2 9772 TPACPI_Q_LNV3('R', '0', 'C', true), /* Thinkpad 13 */
6640ee62 9773 TPACPI_Q_LNV3('R', '0', 'J', true), /* Thinkpad 13 gen 2 */
3cd420b2 9774 TPACPI_Q_LNV3('R', '0', 'K', true), /* Thinkpad 11e gen 4 celeron BIOS */
1a32ebb2
JW		 9775};
9776
2801b968
OG		 9777static int __init tpacpi_battery_init(struct ibm_init_struct *ibm)
9778{
d22296d9
TW		 9779 memset(&battery_info, 0, sizeof(battery_info));
9780
1a32ebb2
JW		 9781 tp_features.battery_force_primary = tpacpi_check_quirks(
9782 battery_quirk_table,
9783 ARRAY_SIZE(battery_quirk_table));
9784
2801b968
OG		 9785 battery_hook_register(&battery_hook);
9786 return 0;
9787}
9788
9789static void tpacpi_battery_exit(void)
9790{
9791 battery_hook_unregister(&battery_hook);
9792}
9793
9794static struct ibm_struct battery_driver_data = {
9795 .name = "battery",
9796 .exit = tpacpi_battery_exit,
9797};
9798
110ea1d8
AS		 9799/*************************************************************************
9800 * LCD Shadow subdriver, for the Lenovo PrivacyGuard feature
9801 */
9802
9803static int lcdshadow_state;
9804
9805static int lcdshadow_on_off(bool state)
9806{
9807 acpi_handle set_shadow_handle;
9808 int output;
9809
9810 if (ACPI_FAILURE(acpi_get_handle(hkey_handle, "SSSS", &set_shadow_handle))) {
9811 pr_warn("Thinkpad ACPI has no %s interface.\n", "SSSS");
9812 return -EIO;
9813 }
9814
9815 if (!acpi_evalf(set_shadow_handle, &output, NULL, "dd", (int)state))
9816 return -EIO;
9817
9818 lcdshadow_state = state;
9819 return 0;
9820}
9821
9822static int lcdshadow_set(bool on)
9823{
9824 if (lcdshadow_state < 0)
9825 return lcdshadow_state;
9826 if (lcdshadow_state == on)
9827 return 0;
9828 return lcdshadow_on_off(on);
9829}
9830
9831static int tpacpi_lcdshadow_init(struct ibm_init_struct *iibm)
9832{
9833 acpi_handle get_shadow_handle;
9834 int output;
9835
9836 if (ACPI_FAILURE(acpi_get_handle(hkey_handle, "GSSS", &get_shadow_handle))) {
9837 lcdshadow_state = -ENODEV;
9838 return 0;
9839 }
9840
9841 if (!acpi_evalf(get_shadow_handle, &output, NULL, "dd", 0)) {
9842 lcdshadow_state = -EIO;
9843 return -EIO;
9844 }
9845 if (!(output & 0x10000)) {
9846 lcdshadow_state = -ENODEV;
9847 return 0;
9848 }
9849 lcdshadow_state = output & 0x1;
9850
9851 return 0;
9852}
9853
9854static void lcdshadow_resume(void)
9855{
9856 if (lcdshadow_state >= 0)
9857 lcdshadow_on_off(lcdshadow_state);
9858}
9859
9860static int lcdshadow_read(struct seq_file *m)
9861{
9862 if (lcdshadow_state < 0) {
9863 seq_puts(m, "status:\t\tnot supported\n");
9864 } else {
9865 seq_printf(m, "status:\t\t%d\n", lcdshadow_state);
9866 seq_puts(m, "commands:\t0, 1\n");
9867 }
9868
9869 return 0;
9870}
9871
9872static int lcdshadow_write(char *buf)
9873{
9874 char *cmd;
466f4697 9875 int res, state = -EINVAL;
110ea1d8
AS		 9876
9877 if (lcdshadow_state < 0)
9878 return -ENODEV;
9879
be51bd45 9880 while ((cmd = strsep(&buf, ","))) {
466f4697
AS		 9881 res = kstrtoint(cmd, 10, &state);
9882 if (res < 0)
9883 return res;
110ea1d8
AS		 9884 }
9885
466f4697 9886 if (state >= 2 || state < 0)
110ea1d8
AS		 9887 return -EINVAL;
9888
9889 return lcdshadow_set(state);
9890}
9891
9892static struct ibm_struct lcdshadow_driver_data = {
9893 .name = "lcdshadow",
9894 .resume = lcdshadow_resume,
9895 .read = lcdshadow_read,
9896 .write = lcdshadow_write,
9897};
9898
acf7f4a5 9899/*************************************************************************
1ac09656 9900 * Thinkpad sensor interfaces
acf7f4a5
MP		 9901 */
9902
0b4f5c95
MP		 9903#define DYTC_CMD_QUERY 0 /* To get DYTC status - enable/revision */
9904#define DYTC_QUERY_ENABLE_BIT 8 /* Bit 8 - 0 = disabled, 1 = enabled */
9905#define DYTC_QUERY_SUBREV_BIT 16 /* Bits 16 - 27 - sub revision */
9906#define DYTC_QUERY_REV_BIT 28 /* Bits 28 - 31 - revision */
9907
acf7f4a5
MP		 9908#define DYTC_CMD_GET 2 /* To get current IC function and mode */
9909#define DYTC_GET_LAPMODE_BIT 17 /* Set when in lapmode */
9910
1ac09656
MP		 9911#define PALMSENSOR_PRESENT_BIT 0 /* Determine if psensor present */
9912#define PALMSENSOR_ON_BIT 1 /* psensor status */
acf7f4a5 9913
1ac09656
MP		 9914static bool has_palmsensor;
9915static bool has_lapsensor;
9916static bool palm_state;
9917static bool lap_state;
0b4f5c95 9918static int dytc_version;
acf7f4a5 9919
c3bfcd4c 9920static int dytc_command(int command, int *output)
acf7f4a5
MP		 9921{
9922 acpi_handle dytc_handle;
9923
c3bfcd4c
MP		 9924 if (ACPI_FAILURE(acpi_get_handle(hkey_handle, "DYTC", &dytc_handle))) {
9925 /* Platform doesn't support DYTC */
acf7f4a5 9926 return -ENODEV;
c3bfcd4c
MP		 9927 }
9928 if (!acpi_evalf(dytc_handle, output, NULL, "dd", command))
acf7f4a5 9929 return -EIO;
c3bfcd4c
MP		 9930 return 0;
9931}
9932
0b4f5c95
MP		 9933static int dytc_get_version(void)
9934{
9935 int err, output;
9936
9937 /* Check if we've been called before - and just return cached value */
9938 if (dytc_version)
9939 return dytc_version;
9940
9941 /* Otherwise query DYTC and extract version information */
9942 err = dytc_command(DYTC_CMD_QUERY, &output);
9943 /*
9944 * If support isn't available (ENODEV) then don't return an error
9945 * and don't create the sysfs group
9946 */
9947 if (err == -ENODEV)
9948 return 0;
9949 /* For all other errors we can flag the failure */
9950 if (err)
9951 return err;
9952
9953 /* Check DYTC is enabled and supports mode setting */
9954 if (output & BIT(DYTC_QUERY_ENABLE_BIT))
9955 dytc_version = (output >> DYTC_QUERY_REV_BIT) & 0xF;
9956
9957 return 0;
9958}
9959
c3bfcd4c
MP		 9960static int lapsensor_get(bool *present, bool *state)
9961{
9962 int output, err;
9963
9964 *present = false;
9965 err = dytc_command(DYTC_CMD_GET, &output);
9966 if (err)
9967 return err;
1ac09656
MP		 9968
9969 *present = true; /*If we get his far, we have lapmode support*/
9970 *state = output & BIT(DYTC_GET_LAPMODE_BIT) ? true : false;
acf7f4a5
MP		 9971 return 0;
9972}
9973
1ac09656 9974static int palmsensor_get(bool *present, bool *state)
acf7f4a5 9975{
1ac09656
MP		 9976 acpi_handle psensor_handle;
9977 int output;
acf7f4a5 9978
1ac09656
MP		 9979 *present = false;
9980 if (ACPI_FAILURE(acpi_get_handle(hkey_handle, "GPSS", &psensor_handle)))
9981 return -ENODEV;
9982 if (!acpi_evalf(psensor_handle, &output, NULL, "d"))
9983 return -EIO;
9984
9985 *present = output & BIT(PALMSENSOR_PRESENT_BIT) ? true : false;
9986 *state = output & BIT(PALMSENSOR_ON_BIT) ? true : false;
acf7f4a5
MP		 9987 return 0;
9988}
9989
1ac09656 9990static void lapsensor_refresh(void)
acf7f4a5 9991{
1ac09656 9992 bool state;
acf7f4a5
MP		 9993 int err;
9994
1ac09656
MP		 9995 if (has_lapsensor) {
9996 err = lapsensor_get(&has_lapsensor, &state);
9997 if (err)
9998 return;
9999 if (lap_state != state) {
10000 lap_state = state;
10001 sysfs_notify(&tpacpi_pdev->dev.kobj, NULL, "dytc_lapmode");
10002 }
10003 }
10004}
acf7f4a5 10005
1ac09656
MP		 10006static void palmsensor_refresh(void)
10007{
10008 bool state;
10009 int err;
10010
10011 if (has_palmsensor) {
10012 err = palmsensor_get(&has_palmsensor, &state);
10013 if (err)
10014 return;
10015 if (palm_state != state) {
10016 palm_state = state;
10017 sysfs_notify(&tpacpi_pdev->dev.kobj, NULL, "palmsensor");
10018 }
10019 }
acf7f4a5
MP		 10020}
10021
acf7f4a5
MP		 10022static ssize_t dytc_lapmode_show(struct device *dev,
10023 struct device_attribute *attr,
10024 char *buf)
10025{
1ac09656
MP		 10026 if (has_lapsensor)
10027 return sysfs_emit(buf, "%d\n", lap_state);
10028 return sysfs_emit(buf, "\n");
acf7f4a5 10029}
acf7f4a5
MP		 10030static DEVICE_ATTR_RO(dytc_lapmode);
10031
1ac09656
MP		 10032static ssize_t palmsensor_show(struct device *dev,
10033 struct device_attribute *attr,
10034 char *buf)
10035{
10036 if (has_palmsensor)
10037 return sysfs_emit(buf, "%d\n", palm_state);
10038 return sysfs_emit(buf, "\n");
10039}
10040static DEVICE_ATTR_RO(palmsensor);
acf7f4a5 10041
1ac09656 10042static int tpacpi_proxsensor_init(struct ibm_init_struct *iibm)
acf7f4a5 10043{
1ac09656 10044 int palm_err, lap_err, err;
acf7f4a5 10045
1ac09656
MP		 10046 palm_err = palmsensor_get(&has_palmsensor, &palm_state);
10047 lap_err = lapsensor_get(&has_lapsensor, &lap_state);
10048 /*
10049 * If support isn't available (ENODEV) for both devices then quit, but
10050 * don't return an error.
acf7f4a5 10051 */
1ac09656 10052 if ((palm_err == -ENODEV) && (lap_err == -ENODEV))
acf7f4a5 10053 return 0;
1ac09656 10054 /* Otherwise, if there was an error return it */
aa44afab 10055 if (palm_err && (palm_err != -ENODEV))
1ac09656 10056 return palm_err;
aa44afab 10057 if (lap_err && (lap_err != -ENODEV))
1ac09656
MP		 10058 return lap_err;
10059
10060 if (has_palmsensor) {
10061 err = sysfs_create_file(&tpacpi_pdev->dev.kobj, &dev_attr_palmsensor.attr);
10062 if (err)
10063 return err;
10064 }
0b4f5c95
MP		 10065
10066 /* Check if we know the DYTC version, if we don't then get it */
10067 if (!dytc_version) {
10068 err = dytc_get_version();
10069 if (err)
10070 return err;
10071 }
10072 /*
10073 * Platforms before DYTC version 5 claim to have a lap sensor, but it doesn't work, so we
10074 * ignore them
10075 */
10076 if (has_lapsensor && (dytc_version >= 5)) {
1ac09656
MP		 10077 err = sysfs_create_file(&tpacpi_pdev->dev.kobj, &dev_attr_dytc_lapmode.attr);
10078 if (err)
10079 return err;
10080 }
10081 return 0;
acf7f4a5
MP		 10082}
10083
1ac09656 10084static void proxsensor_exit(void)
acf7f4a5 10085{
1ac09656
MP		 10086 if (has_lapsensor)
10087 sysfs_remove_file(&tpacpi_pdev->dev.kobj, &dev_attr_dytc_lapmode.attr);
10088 if (has_palmsensor)
10089 sysfs_remove_file(&tpacpi_pdev->dev.kobj, &dev_attr_palmsensor.attr);
acf7f4a5
MP		 10090}
10091
1ac09656
MP		 10092static struct ibm_struct proxsensor_driver_data = {
10093 .name = "proximity-sensor",
10094 .exit = proxsensor_exit,
acf7f4a5
MP		 10095};
10096
c3bfcd4c
MP		 10097/*************************************************************************
10098 * DYTC Platform Profile interface
10099 */
10100
c3bfcd4c 10101#define DYTC_CMD_SET 1 /* To enable/disable IC function mode */
7a47f86b 10102#define DYTC_CMD_MMC_GET 8 /* To get current MMC function and mode */
c3bfcd4c
MP		 10103#define DYTC_CMD_RESET 0x1ff /* To reset back to default */
10104
c3bfcd4c
MP		 10105#define DYTC_GET_FUNCTION_BIT 8 /* Bits 8-11 - function setting */
10106#define DYTC_GET_MODE_BIT 12 /* Bits 12-15 - mode setting */
10107
10108#define DYTC_SET_FUNCTION_BIT 12 /* Bits 12-15 - function setting */
10109#define DYTC_SET_MODE_BIT 16 /* Bits 16-19 - mode setting */
10110#define DYTC_SET_VALID_BIT 20 /* Bit 20 - 1 = on, 0 = off */
10111
10112#define DYTC_FUNCTION_STD 0 /* Function = 0, standard mode */
10113#define DYTC_FUNCTION_CQL 1 /* Function = 1, lap mode */
10114#define DYTC_FUNCTION_MMC 11 /* Function = 11, desk mode */
10115
10116#define DYTC_MODE_PERFORM 2 /* High power mode aka performance */
10117#define DYTC_MODE_LOWPOWER 3 /* Low power mode */
10118#define DYTC_MODE_BALANCE 0xF /* Default mode aka balanced */
7a47f86b
MP		 10119#define DYTC_MODE_MMC_BALANCE 0 /* Default mode from MMC_GET, aka balanced */
10120
10121#define DYTC_ERR_MASK 0xF /* Bits 0-3 in cmd result are the error result */
10122#define DYTC_ERR_SUCCESS 1 /* CMD completed successful */
c3bfcd4c
MP		 10123
10124#define DYTC_SET_COMMAND(function, mode, on) \
10125 (DYTC_CMD_SET | (function) << DYTC_SET_FUNCTION_BIT | \
10126 (mode) << DYTC_SET_MODE_BIT | \
10127 (on) << DYTC_SET_VALID_BIT)
10128
10129#define DYTC_DISABLE_CQL DYTC_SET_COMMAND(DYTC_FUNCTION_CQL, DYTC_MODE_BALANCE, 0)
10130
10131#define DYTC_ENABLE_CQL DYTC_SET_COMMAND(DYTC_FUNCTION_CQL, DYTC_MODE_BALANCE, 1)
10132
10133static bool dytc_profile_available;
10134static enum platform_profile_option dytc_current_profile;
10135static atomic_t dytc_ignore_event = ATOMIC_INIT(0);
10136static DEFINE_MUTEX(dytc_mutex);
7a47f86b 10137static bool dytc_mmc_get_available;
c3bfcd4c
MP		 10138
10139static int convert_dytc_to_profile(int dytcmode, enum platform_profile_option *profile)
10140{
10141 switch (dytcmode) {
10142 case DYTC_MODE_LOWPOWER:
10143 *profile = PLATFORM_PROFILE_LOW_POWER;
10144 break;
10145 case DYTC_MODE_BALANCE:
7a47f86b 10146 case DYTC_MODE_MMC_BALANCE:
c3bfcd4c
MP		 10147 *profile = PLATFORM_PROFILE_BALANCED;
10148 break;
10149 case DYTC_MODE_PERFORM:
10150 *profile = PLATFORM_PROFILE_PERFORMANCE;
10151 break;
10152 default: /* Unknown mode */
10153 return -EINVAL;
10154 }
10155 return 0;
10156}
10157
10158static int convert_profile_to_dytc(enum platform_profile_option profile, int *perfmode)
10159{
10160 switch (profile) {
10161 case PLATFORM_PROFILE_LOW_POWER:
10162 *perfmode = DYTC_MODE_LOWPOWER;
10163 break;
10164 case PLATFORM_PROFILE_BALANCED:
10165 *perfmode = DYTC_MODE_BALANCE;
10166 break;
10167 case PLATFORM_PROFILE_PERFORMANCE:
10168 *perfmode = DYTC_MODE_PERFORM;
10169 break;
10170 default: /* Unknown profile */
10171 return -EOPNOTSUPP;
10172 }
10173 return 0;
10174}
10175
10176/*
10177 * dytc_profile_get: Function to register with platform_profile
10178 * handler. Returns current platform profile.
10179 */
d2386d79
HG		 10180static int dytc_profile_get(struct platform_profile_handler *pprof,
10181 enum platform_profile_option *profile)
c3bfcd4c
MP		 10182{
10183 *profile = dytc_current_profile;
10184 return 0;
10185}
10186
10187/*
10188 * Helper function - check if we are in CQL mode and if we are
10189 * - disable CQL,
10190 * - run the command
10191 * - enable CQL
10192 * If not in CQL mode, just run the command
10193 */
d2386d79 10194static int dytc_cql_command(int command, int *output)
c3bfcd4c
MP		 10195{
10196 int err, cmd_err, dummy;
10197 int cur_funcmode;
10198
10199 /* Determine if we are in CQL mode. This alters the commands we do */
10200 err = dytc_command(DYTC_CMD_GET, output);
10201 if (err)
10202 return err;
10203
10204 cur_funcmode = (*output >> DYTC_GET_FUNCTION_BIT) & 0xF;
10205 /* Check if we're OK to return immediately */
10206 if ((command == DYTC_CMD_GET) && (cur_funcmode != DYTC_FUNCTION_CQL))
10207 return 0;
10208
10209 if (cur_funcmode == DYTC_FUNCTION_CQL) {
10210 atomic_inc(&dytc_ignore_event);
10211 err = dytc_command(DYTC_DISABLE_CQL, &dummy);
10212 if (err)
10213 return err;
10214 }
10215
10216 cmd_err = dytc_command(command, output);
10217 /* Check return condition after we've restored CQL state */
10218
10219 if (cur_funcmode == DYTC_FUNCTION_CQL) {
10220 err = dytc_command(DYTC_ENABLE_CQL, &dummy);
10221 if (err)
10222 return err;
10223 }
c3bfcd4c
MP		 10224 return cmd_err;
10225}
10226
10227/*
10228 * dytc_profile_set: Function to register with platform_profile
10229 * handler. Sets current platform profile.
10230 */
d2386d79
HG		 10231static int dytc_profile_set(struct platform_profile_handler *pprof,
10232 enum platform_profile_option profile)
c3bfcd4c
MP		 10233{
10234 int output;
10235 int err;
10236
10237 if (!dytc_profile_available)
10238 return -ENODEV;
10239
10240 err = mutex_lock_interruptible(&dytc_mutex);
10241 if (err)
10242 return err;
10243
10244 if (profile == PLATFORM_PROFILE_BALANCED) {
e157c95f
HG		 10245 /*
10246 * To get back to balanced mode we need to issue a reset command.
10247 * Note we still need to disable CQL mode before hand and re-enable
10248 * it afterwards, otherwise dytc_lapmode gets reset to 0 and stays
10249 * stuck at 0 for aprox. 30 minutes.
10250 */
10251 err = dytc_cql_command(DYTC_CMD_RESET, &output);
c3bfcd4c
MP		 10252 if (err)
10253 goto unlock;
10254 } else {
10255 int perfmode;
10256
10257 err = convert_profile_to_dytc(profile, &perfmode);
10258 if (err)
10259 goto unlock;
10260
10261 /* Determine if we are in CQL mode. This alters the commands we do */
10262 err = dytc_cql_command(DYTC_SET_COMMAND(DYTC_FUNCTION_MMC, perfmode, 1), &output);
10263 if (err)
10264 goto unlock;
10265 }
10266 /* Success - update current profile */
10267 dytc_current_profile = profile;
10268unlock:
10269 mutex_unlock(&dytc_mutex);
10270 return err;
10271}
10272
10273static void dytc_profile_refresh(void)
10274{
10275 enum platform_profile_option profile;
10276 int output, err;
10277 int perfmode;
10278
10279 mutex_lock(&dytc_mutex);
7a47f86b
MP		 10280 if (dytc_mmc_get_available)
10281 err = dytc_command(DYTC_CMD_MMC_GET, &output);
10282 else
10283 err = dytc_cql_command(DYTC_CMD_GET, &output);
c3bfcd4c
MP		 10284 mutex_unlock(&dytc_mutex);
10285 if (err)
10286 return;
10287
10288 perfmode = (output >> DYTC_GET_MODE_BIT) & 0xF;
10289 convert_dytc_to_profile(perfmode, &profile);
10290 if (profile != dytc_current_profile) {
10291 dytc_current_profile = profile;
10292 platform_profile_notify();
10293 }
10294}
10295
10296static struct platform_profile_handler dytc_profile = {
10297 .profile_get = dytc_profile_get,
10298 .profile_set = dytc_profile_set,
10299};
10300
10301static int tpacpi_dytc_profile_init(struct ibm_init_struct *iibm)
10302{
10303 int err, output;
10304
10305 /* Setup supported modes */
10306 set_bit(PLATFORM_PROFILE_LOW_POWER, dytc_profile.choices);
10307 set_bit(PLATFORM_PROFILE_BALANCED, dytc_profile.choices);
10308 set_bit(PLATFORM_PROFILE_PERFORMANCE, dytc_profile.choices);
10309
10310 dytc_profile_available = false;
10311 err = dytc_command(DYTC_CMD_QUERY, &output);
10312 /*
10313 * If support isn't available (ENODEV) then don't return an error
10314 * and don't create the sysfs group
10315 */
10316 if (err == -ENODEV)
10317 return 0;
10318 /* For all other errors we can flag the failure */
10319 if (err)
10320 return err;
10321
0b4f5c95
MP		 10322 /* Check if we know the DYTC version, if we don't then get it */
10323 if (!dytc_version) {
10324 err = dytc_get_version();
10325 if (err)
10326 return err;
10327 }
c3bfcd4c 10328 /* Check DYTC is enabled and supports mode setting */
0b4f5c95
MP		 10329 if (dytc_version >= 5) {
10330 dbg_printk(TPACPI_DBG_INIT,
10331 "DYTC version %d: thermal mode available\n", dytc_version);
7a47f86b
MP		 10332 /*
10333 * Check if MMC_GET functionality available
10334 * Version > 6 and return success from MMC_GET command
10335 */
10336 dytc_mmc_get_available = false;
10337 if (dytc_version >= 6) {
10338 err = dytc_command(DYTC_CMD_MMC_GET, &output);
10339 if (!err && ((output & DYTC_ERR_MASK) == DYTC_ERR_SUCCESS))
10340 dytc_mmc_get_available = true;
10341 }
0b4f5c95
MP		 10342 /* Create platform_profile structure and register */
10343 err = platform_profile_register(&dytc_profile);
10344 /*
10345 * If for some reason platform_profiles aren't enabled
10346 * don't quit terminally.
10347 */
10348 if (err)
10349 return 0;
c3bfcd4c 10350
0b4f5c95
MP		 10351 dytc_profile_available = true;
10352 /* Ensure initial values are correct */
10353 dytc_profile_refresh();
c3bfcd4c
MP		 10354 }
10355 return 0;
10356}
10357
10358static void dytc_profile_exit(void)
10359{
10360 if (dytc_profile_available) {
10361 dytc_profile_available = false;
10362 platform_profile_remove();
10363 }
10364}
10365
10366static struct ibm_struct dytc_profile_driver_data = {
10367 .name = "dytc-profile",
10368 .exit = dytc_profile_exit,
10369};
c3bfcd4c 10370
d7cbe277
NJ		 10371/*************************************************************************
10372 * Keyboard language interface
10373 */
10374
10375struct keyboard_lang_data {
10376 const char *lang_str;
10377 int lang_code;
10378};
10379
cfa75cca 10380static const struct keyboard_lang_data keyboard_lang_data[] = {
d7cbe277
NJ		 10381 {"be", 0x080c},
10382 {"cz", 0x0405},
10383 {"da", 0x0406},
10384 {"de", 0x0c07},
cfa75cca 10385 {"en", 0x0000},
d7cbe277
NJ		 10386 {"es", 0x2c0a},
10387 {"et", 0x0425},
10388 {"fr", 0x040c},
10389 {"fr-ch", 0x100c},
10390 {"hu", 0x040e},
10391 {"it", 0x0410},
10392 {"jp", 0x0411},
10393 {"nl", 0x0413},
10394 {"nn", 0x0414},
10395 {"pl", 0x0415},
10396 {"pt", 0x0816},
10397 {"sl", 0x041b},
10398 {"sv", 0x081d},
10399 {"tr", 0x041f},
10400};
10401
10402static int set_keyboard_lang_command(int command)
10403{
10404 acpi_handle sskl_handle;
10405 int output;
10406
10407 if (ACPI_FAILURE(acpi_get_handle(hkey_handle, "SSKL", &sskl_handle))) {
10408 /* Platform doesn't support SSKL */
10409 return -ENODEV;
10410 }
10411
10412 if (!acpi_evalf(sskl_handle, &output, NULL, "dd", command))
10413 return -EIO;
10414
10415 return 0;
10416}
10417
10418static int get_keyboard_lang(int *output)
10419{
10420 acpi_handle gskl_handle;
10421 int kbd_lang;
10422
10423 if (ACPI_FAILURE(acpi_get_handle(hkey_handle, "GSKL", &gskl_handle))) {
10424 /* Platform doesn't support GSKL */
10425 return -ENODEV;
10426 }
10427
10428 if (!acpi_evalf(gskl_handle, &kbd_lang, NULL, "dd", 0x02000000))
10429 return -EIO;
10430
9e9c6413
HG		 10431 /*
10432 * METHOD_ERR gets returned on devices where there are no special (e.g. '=',
10433 * '(' and ')') keys which use layout dependent key-press emulation.
10434 */
10435 if (kbd_lang & METHOD_ERR)
10436 return -ENODEV;
10437
d7cbe277
NJ		 10438 *output = kbd_lang;
10439
10440 return 0;
10441}
10442
10443/* sysfs keyboard language entry */
10444static ssize_t keyboard_lang_show(struct device *dev,
10445 struct device_attribute *attr,
10446 char *buf)
10447{
cfa75cca 10448 int output, err, i, len = 0;
d7cbe277
NJ		 10449
10450 err = get_keyboard_lang(&output);
10451 if (err)
10452 return err;
10453
10454 for (i = 0; i < ARRAY_SIZE(keyboard_lang_data); i++) {
10455 if (i)
cfa75cca 10456 len += sysfs_emit_at(buf, len, "%s", " ");
d7cbe277
NJ		 10457
10458 if (output == keyboard_lang_data[i].lang_code) {
cfa75cca 10459 len += sysfs_emit_at(buf, len, "[%s]", keyboard_lang_data[i].lang_str);
d7cbe277 10460 } else {
cfa75cca 10461 len += sysfs_emit_at(buf, len, "%s", keyboard_lang_data[i].lang_str);
d7cbe277
NJ		 10462 }
10463 }
cfa75cca 10464 len += sysfs_emit_at(buf, len, "\n");
d7cbe277 10465
cfa75cca 10466 return len;
d7cbe277
NJ		 10467}
10468
10469static ssize_t keyboard_lang_store(struct device *dev,
10470 struct device_attribute *attr,
10471 const char *buf, size_t count)
10472{
10473 int err, i;
10474 bool lang_found = false;
10475 int lang_code = 0;
10476
10477 for (i = 0; i < ARRAY_SIZE(keyboard_lang_data); i++) {
10478 if (sysfs_streq(buf, keyboard_lang_data[i].lang_str)) {
10479 lang_code = keyboard_lang_data[i].lang_code;
10480 lang_found = true;
10481 break;
10482 }
10483 }
10484
10485 if (lang_found) {
10486 lang_code = lang_code | 1 << 24;
10487
10488 /* Set language code */
10489 err = set_keyboard_lang_command(lang_code);
10490 if (err)
10491 return err;
10492 } else {
cfa75cca 10493 dev_err(&tpacpi_pdev->dev, "Unknown Keyboard language. Ignoring\n");
d7cbe277
NJ		 10494 return -EINVAL;
10495 }
10496
10497 tpacpi_disclose_usertask(attr->attr.name,
10498 "keyboard language is set to %s\n", buf);
10499
10500 sysfs_notify(&tpacpi_pdev->dev.kobj, NULL, "keyboard_lang");
10501
10502 return count;
10503}
d7cbe277
NJ		 10504static DEVICE_ATTR_RW(keyboard_lang);
10505
10506static struct attribute *kbdlang_attributes[] = {
10507 &dev_attr_keyboard_lang.attr,
10508 NULL
10509};
10510
10511static const struct attribute_group kbdlang_attr_group = {
10512 .attrs = kbdlang_attributes,
10513};
10514
10515static int tpacpi_kbdlang_init(struct ibm_init_struct *iibm)
10516{
10517 int err, output;
10518
10519 err = get_keyboard_lang(&output);
10520 /*
10521 * If support isn't available (ENODEV) then don't return an error
cfa75cca 10522 * just don't create the sysfs group.
d7cbe277
NJ		 10523 */
10524 if (err == -ENODEV)
10525 return 0;
10526
10527 if (err)
10528 return err;
10529
10530 /* Platform supports this feature - create the sysfs file */
cfa75cca 10531 return sysfs_create_group(&tpacpi_pdev->dev.kobj, &kbdlang_attr_group);
d7cbe277
NJ		 10532}
10533
10534static void kbdlang_exit(void)
10535{
10536 sysfs_remove_group(&tpacpi_pdev->dev.kobj, &kbdlang_attr_group);
10537}
10538
10539static struct ibm_struct kbdlang_driver_data = {
10540 .name = "kbdlang",
10541 .exit = kbdlang_exit,
10542};
10543
3feb52a2
NJ		 10544/*************************************************************************
10545 * DPRC(Dynamic Power Reduction Control) subdriver, for the Lenovo WWAN
10546 * and WLAN feature.
10547 */
10548#define DPRC_GET_WWAN_ANTENNA_TYPE 0x40000
10549#define DPRC_WWAN_ANTENNA_TYPE_A_BIT BIT(4)
10550#define DPRC_WWAN_ANTENNA_TYPE_B_BIT BIT(8)
10551static bool has_antennatype;
10552static int wwan_antennatype;
10553
10554static int dprc_command(int command, int *output)
10555{
10556 acpi_handle dprc_handle;
10557
10558 if (ACPI_FAILURE(acpi_get_handle(hkey_handle, "DPRC", &dprc_handle))) {
10559 /* Platform doesn't support DPRC */
10560 return -ENODEV;
10561 }
10562
10563 if (!acpi_evalf(dprc_handle, output, NULL, "dd", command))
10564 return -EIO;
10565
10566 /*
10567 * METHOD_ERR gets returned on devices where few commands are not supported
10568 * for example command to get WWAN Antenna type command is not supported on
10569 * some devices.
10570 */
10571 if (*output & METHOD_ERR)
10572 return -ENODEV;
10573
10574 return 0;
10575}
10576
10577static int get_wwan_antenna(int *wwan_antennatype)
10578{
10579 int output, err;
10580
10581 /* Get current Antenna type */
10582 err = dprc_command(DPRC_GET_WWAN_ANTENNA_TYPE, &output);
10583 if (err)
10584 return err;
10585
10586 if (output & DPRC_WWAN_ANTENNA_TYPE_A_BIT)
10587 *wwan_antennatype = 1;
10588 else if (output & DPRC_WWAN_ANTENNA_TYPE_B_BIT)
10589 *wwan_antennatype = 2;
10590 else
10591 return -ENODEV;
10592
10593 return 0;
10594}
10595
10596/* sysfs wwan antenna type entry */
10597static ssize_t wwan_antenna_type_show(struct device *dev,
10598 struct device_attribute *attr,
10599 char *buf)
10600{
10601 switch (wwan_antennatype) {
10602 case 1:
10603 return sysfs_emit(buf, "type a\n");
10604 case 2:
10605 return sysfs_emit(buf, "type b\n");
10606 default:
10607 return -ENODATA;
10608 }
10609}
10610static DEVICE_ATTR_RO(wwan_antenna_type);
10611
10612static int tpacpi_dprc_init(struct ibm_init_struct *iibm)
10613{
10614 int wwanantenna_err, err;
10615
10616 wwanantenna_err = get_wwan_antenna(&wwan_antennatype);
10617 /*
10618 * If support isn't available (ENODEV) then quit, but don't
10619 * return an error.
10620 */
10621 if (wwanantenna_err == -ENODEV)
10622 return 0;
10623
10624 /* if there was an error return it */
10625 if (wwanantenna_err && (wwanantenna_err != -ENODEV))
10626 return wwanantenna_err;
10627 else if (!wwanantenna_err)
10628 has_antennatype = true;
10629
10630 if (has_antennatype) {
10631 err = sysfs_create_file(&tpacpi_pdev->dev.kobj, &dev_attr_wwan_antenna_type.attr);
10632 if (err)
10633 return err;
10634 }
10635 return 0;
10636}
10637
10638static void dprc_exit(void)
10639{
10640 if (has_antennatype)
10641 sysfs_remove_file(&tpacpi_pdev->dev.kobj, &dev_attr_wwan_antenna_type.attr);
10642}
10643
10644static struct ibm_struct dprc_driver_data = {
10645 .name = "dprc",
10646 .exit = dprc_exit,
10647};
10648
56b6aeb0
HMH		 10649/****************************************************************************
10650 ****************************************************************************
10651 *
10652 * Infrastructure
10653 *
10654 ****************************************************************************
10655 ****************************************************************************/
10656
8b468c0c
HMH		 10657/*
10658 * HKEY event callout for other subdrivers go here
10659 * (yes, it is ugly, but it is quick, safe, and gets the job done
10660 */
10661static void tpacpi_driver_event(const unsigned int hkey_event)
10662{
347a2686
HMH		 10663 if (ibm_backlight_device) {
10664 switch (hkey_event) {
10665 case TP_HKEY_EV_BRGHT_UP:
10666 case TP_HKEY_EV_BRGHT_DOWN:
10667 tpacpi_brightness_notify_change();
10668 }
10669 }
0d204c34
HMH		 10670 if (alsa_card) {
10671 switch (hkey_event) {
10672 case TP_HKEY_EV_VOL_UP:
10673 case TP_HKEY_EV_VOL_DOWN:
10674 case TP_HKEY_EV_VOL_MUTE:
10675 volume_alsa_notify_change();
10676 }
10677 }
c685e20d
HG		 10678 if (tp_features.kbdlight && hkey_event == TP_HKEY_EV_KBD_LIGHT) {
10679 enum led_brightness brightness;
10680
10681 mutex_lock(&kbdlight_mutex);
10682
10683 /*
10684 * Check the brightness actually changed, setting the brightness
10685 * through kbdlight_set_level() also triggers this event.
10686 */
10687 brightness = kbdlight_sysfs_get(NULL);
10688 if (kbdlight_brightness != brightness) {
10689 kbdlight_brightness = brightness;
10690 led_classdev_notify_brightness_hw_changed(
10691 &tpacpi_led_kbdlight.led_classdev, brightness);
10692 }
10693
10694 mutex_unlock(&kbdlight_mutex);
10695 }
acf7f4a5 10696
c3bfcd4c 10697 if (hkey_event == TP_HKEY_EV_THM_CSM_COMPLETED) {
1ac09656 10698 lapsensor_refresh();
c3bfcd4c
MP		 10699 /* If we are already accessing DYTC then skip dytc update */
10700 if (!atomic_add_unless(&dytc_ignore_event, -1, 0))
10701 dytc_profile_refresh();
c3bfcd4c 10702 }
8b468c0c
HMH		 10703}
10704
8b468c0c
HMH		 10705static void hotkey_driver_event(const unsigned int scancode)
10706{
67bcae6e 10707 tpacpi_driver_event(TP_HKEY_EV_HOTKEY_BASE + scancode);
8b468c0c
HMH		 10708}
10709
7fd40029
HMH		 10710/* --------------------------------------------------------------------- */
10711
56b6aeb0 10712/* /proc support */
94954cc6 10713static struct proc_dir_entry *proc_dir;
16663a87 10714
56b6aeb0
HMH		 10715/*
10716 * Module and infrastructure proble, init and exit handling
10717 */
1da177e4 10718
90ab5ee9 10719static bool force_load;
b21a15f6 10720
fe08bc4b 10721#ifdef CONFIG_THINKPAD_ACPI_DEBUG
a5763f22 10722static const char * __init str_supported(int is_supported)
fe08bc4b 10723{
a5763f22 10724 static char text_unsupported[] __initdata = "not supported";
fe08bc4b 10725
72a979f0 10726 return (is_supported) ? &text_unsupported[4] : &text_unsupported[0];
fe08bc4b
HMH		 10727}
10728#endif /* CONFIG_THINKPAD_ACPI_DEBUG */
10729
b21a15f6
HMH		 10730static void ibm_exit(struct ibm_struct *ibm)
10731{
10732 dbg_printk(TPACPI_DBG_EXIT, "removing %s\n", ibm->name);
10733
10734 list_del_init(&ibm->all_drivers);
10735
10736 if (ibm->flags.acpi_notify_installed) {
10737 dbg_printk(TPACPI_DBG_EXIT,
10738 "%s: acpi_remove_notify_handler\n", ibm->name);
10739 BUG_ON(!ibm->acpi);
10740 acpi_remove_notify_handler(*ibm->acpi->handle,
10741 ibm->acpi->type,
10742 dispatch_acpi_notify);
10743 ibm->flags.acpi_notify_installed = 0;
b21a15f6
HMH		 10744 }
10745
10746 if (ibm->flags.proc_created) {
10747 dbg_printk(TPACPI_DBG_EXIT,
10748 "%s: remove_proc_entry\n", ibm->name);
10749 remove_proc_entry(ibm->name, proc_dir);
10750 ibm->flags.proc_created = 0;
10751 }
10752
10753 if (ibm->flags.acpi_driver_registered) {
10754 dbg_printk(TPACPI_DBG_EXIT,
10755 "%s: acpi_bus_unregister_driver\n", ibm->name);
10756 BUG_ON(!ibm->acpi);
10757 acpi_bus_unregister_driver(ibm->acpi->driver);
10758 kfree(ibm->acpi->driver);
10759 ibm->acpi->driver = NULL;
10760 ibm->flags.acpi_driver_registered = 0;
10761 }
10762
10763 if (ibm->flags.init_called && ibm->exit) {
10764 ibm->exit();
10765 ibm->flags.init_called = 0;
10766 }
10767
10768 dbg_printk(TPACPI_DBG_INIT, "finished removing %s\n", ibm->name);
10769}
f74a27d4 10770
a5763f22 10771static int __init ibm_init(struct ibm_init_struct *iibm)
1da177e4
LT		 10772{
10773 int ret;
a5763f22 10774 struct ibm_struct *ibm = iibm->data;
1da177e4
LT		 10775 struct proc_dir_entry *entry;
10776
a5763f22
HMH		 10777 BUG_ON(ibm == NULL);
10778
10779 INIT_LIST_HEAD(&ibm->all_drivers);
10780
92641177 10781 if (ibm->flags.experimental && !experimental)
1da177e4
LT		 10782 return 0;
10783
fe08bc4b
HMH		 10784 dbg_printk(TPACPI_DBG_INIT,
10785 "probing for %s\n", ibm->name);
10786
a5763f22
HMH		 10787 if (iibm->init) {
10788 ret = iibm->init(iibm);
5fba344c
HMH		 10789 if (ret > 0)
10790 return 0; /* probe failed */
10791 if (ret)
1da177e4 10792 return ret;
a5763f22 10793
92641177 10794 ibm->flags.init_called = 1;
1da177e4
LT		 10795 }
10796
8d376cd6
HMH		 10797 if (ibm->acpi) {
10798 if (ibm->acpi->hid) {
10799 ret = register_tpacpi_subdriver(ibm);
10800 if (ret)
10801 goto err_out;
10802 }
5fba344c 10803
8d376cd6
HMH		 10804 if (ibm->acpi->notify) {
10805 ret = setup_acpi_notify(ibm);
10806 if (ret == -ENODEV) {
0978e012
JP		 10807 pr_notice("disabling subdriver %s\n",
10808 ibm->name);
8d376cd6
HMH		 10809 ret = 0;
10810 goto err_out;
10811 }
10812 if (ret < 0)
10813 goto err_out;
5fba344c 10814 }
5fba344c
HMH		 10815 }
10816
fe08bc4b
HMH		 10817 dbg_printk(TPACPI_DBG_INIT,
10818 "%s installed\n", ibm->name);
10819
78f81cc4 10820 if (ibm->read) {
d161a13f 10821 umode_t mode = iibm->base_procfs_mode;
887965e6 10822
b525c06c
HMH		 10823 if (!mode)
10824 mode = S_IRUGO;
887965e6
AD		 10825 if (ibm->write)
10826 mode |= S_IWUSR;
10827 entry = proc_create_data(ibm->name, mode, proc_dir,
97a32539 10828 &dispatch_proc_ops, ibm);
78f81cc4 10829 if (!entry) {
0978e012 10830 pr_err("unable to create proc entry %s\n", ibm->name);
5fba344c
HMH		 10831 ret = -ENODEV;
10832 goto err_out;
78f81cc4 10833 }
92641177 10834 ibm->flags.proc_created = 1;
78f81cc4 10835 }
1da177e4 10836
a5763f22
HMH		 10837 list_add_tail(&ibm->all_drivers, &tpacpi_all_drivers);
10838
1da177e4 10839 return 0;
5fba344c
HMH		 10840
10841err_out:
fe08bc4b
HMH		 10842 dbg_printk(TPACPI_DBG_INIT,
10843 "%s: at error exit path with result %d\n",
10844 ibm->name, ret);
10845
5fba344c 10846 ibm_exit(ibm);
72a979f0 10847 return (ret < 0) ? ret : 0;
1da177e4
LT		 10848}
10849
56b6aeb0
HMH		 10850/* Probing */
10851
846a416b
JW		 10852static char __init tpacpi_parse_fw_id(const char * const s,
10853 u32 *model, u16 *release)
050df107 10854{
846a416b
JW		 10855 int i;
10856
10857 if (!s || strlen(s) < 8)
10858 goto invalid;
10859
10860 for (i = 0; i < 8; i++)
10861 if (!((s[i] >= '0' && s[i] <= '9') ||
10862 (s[i] >= 'A' && s[i] <= 'Z')))
10863 goto invalid;
050df107 10864
1b0eb5bc
AL		 10865 /*
10866 * Most models: xxyTkkWW (#.##c)
10867 * Ancient 570/600 and -SL lacks (#.##c)
10868 */
846a416b
JW		 10869 if (s[3] == 'T' || s[3] == 'N') {
10870 *model = TPID(s[0], s[1]);
10871 *release = TPVER(s[4], s[5]);
10872 return s[2];
1b0eb5bc
AL		 10873
10874 /* New models: xxxyTkkW (#.##c); T550 and some others */
846a416b
JW		 10875 } else if (s[4] == 'T' || s[4] == 'N') {
10876 *model = TPID3(s[0], s[1], s[2]);
10877 *release = TPVER(s[5], s[6]);
10878 return s[3];
10879 }
10880
10881invalid:
10882 return '\0';
050df107
HMH		 10883}
10884
9a4b33d4
JY		 10885static void find_new_ec_fwstr(const struct dmi_header *dm, void *private)
10886{
10887 char *ec_fw_string = (char *) private;
10888 const char *dmi_data = (const char *)dm;
10889 /*
10890 * ThinkPad Embedded Controller Program Table on newer models
10891 *
10892 * Offset | Name | Width | Description
10893 * ----------------------------------------------------
10894 * 0x00 | Type | BYTE | 0x8C
10895 * 0x01 | Length | BYTE |
10896 * 0x02 | Handle | WORD | Varies
10897 * 0x04 | Signature | BYTEx6 | ASCII for "LENOVO"
10898 * 0x0A | OEM struct offset | BYTE | 0x0B
10899 * 0x0B | OEM struct number | BYTE | 0x07, for this structure
10900 * 0x0C | OEM struct revision | BYTE | 0x01, for this format
10901 * 0x0D | ECP version ID | STR ID |
10902 * 0x0E | ECP release date | STR ID |
10903 */
10904
10905 /* Return if data structure not match */
10906 if (dm->type != 140 || dm->length < 0x0F ||
10907 memcmp(dmi_data + 4, "LENOVO", 6) != 0 ||
10908 dmi_data[0x0A] != 0x0B || dmi_data[0x0B] != 0x07 ||
10909 dmi_data[0x0C] != 0x01)
10910 return;
10911
10912 /* fwstr is the first 8byte string */
10913 strncpy(ec_fw_string, dmi_data + 0x0F, 8);
10914}
10915
bf20e740
HMH		 10916/* returns 0 - probe ok, or < 0 - probe error.
10917 * Probe ok doesn't mean thinkpad found.
10918 * On error, kfree() cleanup on tp->* is not performed, caller must do it */
10919static int __must_check __init get_thinkpad_model_data(
10920 struct thinkpad_id_data *tp)
1da177e4 10921{
1855256c 10922 const struct dmi_device *dev = NULL;
9a4b33d4 10923 char ec_fw_string[18] = {0};
bf20e740 10924 char const *s;
846a416b 10925 char t;
1da177e4 10926
d5a2f2f1 10927 if (!tp)
bf20e740 10928 return -EINVAL;
d5a2f2f1
HMH		 10929
10930 memset(tp, 0, sizeof(*tp));
10931
10932 if (dmi_name_in_vendors("IBM"))
10933 tp->vendor = PCI_VENDOR_ID_IBM;
10934 else if (dmi_name_in_vendors("LENOVO"))
10935 tp->vendor = PCI_VENDOR_ID_LENOVO;
10936 else
bf20e740 10937 return 0;
d5a2f2f1 10938
bf20e740
HMH		 10939 s = dmi_get_system_info(DMI_BIOS_VERSION);
10940 tp->bios_version_str = kstrdup(s, GFP_KERNEL);
10941 if (s && !tp->bios_version_str)
10942 return -ENOMEM;
050df107
HMH		 10943
10944 /* Really ancient ThinkPad 240X will fail this, which is fine */
846a416b
JW		 10945 t = tpacpi_parse_fw_id(tp->bios_version_str,
10946 &tp->bios_model, &tp->bios_release);
10947 if (t != 'E' && t != 'C')
bf20e740 10948 return 0;
050df107 10949
56b6aeb0
HMH		 10950 /*
10951 * ThinkPad T23 or newer, A31 or newer, R50e or newer,
10952 * X32 or newer, all Z series; Some models must have an
10953 * up-to-date BIOS or they will not be detected.
10954 *
19206a1e 10955 * See https://thinkwiki.org/wiki/List_of_DMI_IDs
56b6aeb0
HMH		 10956 */
10957 while ((dev = dmi_find_device(DMI_DEV_TYPE_OEM_STRING, NULL, dev))) {
10958 if (sscanf(dev->name,
10959 "IBM ThinkPad Embedded Controller -[%17c",
10960 ec_fw_string) == 1) {
10961 ec_fw_string[sizeof(ec_fw_string) - 1] = 0;
10962 ec_fw_string[strcspn(ec_fw_string, " ]")] = 0;
d5a2f2f1 10963 break;
78f81cc4 10964 }
1da177e4 10965 }
d5a2f2f1 10966
9a4b33d4
JY		 10967 /* Newer ThinkPads have different EC program info table */
10968 if (!ec_fw_string[0])
10969 dmi_walk(find_new_ec_fwstr, &ec_fw_string);
10970
10971 if (ec_fw_string[0]) {
10972 tp->ec_version_str = kstrdup(ec_fw_string, GFP_KERNEL);
10973 if (!tp->ec_version_str)
10974 return -ENOMEM;
10975
10976 t = tpacpi_parse_fw_id(ec_fw_string,
10977 &tp->ec_model, &tp->ec_release);
10978 if (t != 'H') {
10979 pr_notice("ThinkPad firmware release %s doesn't match the known patterns\n",
10980 ec_fw_string);
10981 pr_notice("please report this to %s\n", TPACPI_MAIL);
10982 }
10983 }
10984
bf20e740 10985 s = dmi_get_system_info(DMI_PRODUCT_VERSION);
40f5c777 10986 if (s && !(strncasecmp(s, "ThinkPad", 8) && strncasecmp(s, "Lenovo", 6))) {
bf20e740
HMH		 10987 tp->model_str = kstrdup(s, GFP_KERNEL);
10988 if (!tp->model_str)
10989 return -ENOMEM;
a4f46bb9
MI		 10990 } else {
10991 s = dmi_get_system_info(DMI_BIOS_VENDOR);
40f5c777 10992 if (s && !(strncasecmp(s, "Lenovo", 6))) {
a4f46bb9
MI		 10993 tp->model_str = kstrdup(s, GFP_KERNEL);
10994 if (!tp->model_str)
10995 return -ENOMEM;
10996 }
d5a2f2f1 10997 }
8c74adbc 10998
bf20e740
HMH		 10999 s = dmi_get_system_info(DMI_PRODUCT_NAME);
11000 tp->nummodel_str = kstrdup(s, GFP_KERNEL);
11001 if (s && !tp->nummodel_str)
11002 return -ENOMEM;
11003
11004 return 0;
1da177e4
LT		 11005}
11006
5fba344c
HMH		 11007static int __init probe_for_thinkpad(void)
11008{
11009 int is_thinkpad;
11010
11011 if (acpi_disabled)
11012 return -ENODEV;
11013
e28393c0
HMH		 11014 /* It would be dangerous to run the driver in this case */
11015 if (!tpacpi_is_ibm() && !tpacpi_is_lenovo())
11016 return -ENODEV;
11017
5fba344c
HMH		 11018 /*
11019 * Non-ancient models have better DMI tagging, but very old models
e675abaf 11020 * don't. tpacpi_is_fw_known() is a cheat to help in that case.
5fba344c 11021 */
e675abaf
HMH		 11022 is_thinkpad = (thinkpad_id.model_str != NULL) ||
11023 (thinkpad_id.ec_model != 0) ||
11024 tpacpi_is_fw_known();
5fba344c 11025
437e470c
HMH		 11026 /* The EC handler is required */
11027 tpacpi_acpi_handle_locate("ec", TPACPI_ACPI_EC_HID, &ec_handle);
5fba344c
HMH		 11028 if (!ec_handle) {
11029 if (is_thinkpad)
0978e012 11030 pr_err("Not yet supported ThinkPad detected!\n");
5fba344c
HMH		 11031 return -ENODEV;
11032 }
11033
0dcef77c
HMH		 11034 if (!is_thinkpad && !force_load)
11035 return -ENODEV;
11036
5fba344c
HMH		 11037 return 0;
11038}
11039
7a43f788
HMH		 11040static void __init thinkpad_acpi_init_banner(void)
11041{
0978e012
JP		 11042 pr_info("%s v%s\n", TPACPI_DESC, TPACPI_VERSION);
11043 pr_info("%s\n", TPACPI_URL);
7a43f788 11044
0978e012 11045 pr_info("ThinkPad BIOS %s, EC %s\n",
7a43f788
HMH		 11046 (thinkpad_id.bios_version_str) ?
11047 thinkpad_id.bios_version_str : "unknown",
11048 (thinkpad_id.ec_version_str) ?
11049 thinkpad_id.ec_version_str : "unknown");
11050
11051 BUG_ON(!thinkpad_id.vendor);
11052
11053 if (thinkpad_id.model_str)
0978e012 11054 pr_info("%s %s, model %s\n",
7a43f788
HMH		 11055 (thinkpad_id.vendor == PCI_VENDOR_ID_IBM) ?
11056 "IBM" : ((thinkpad_id.vendor ==
11057 PCI_VENDOR_ID_LENOVO) ?
11058 "Lenovo" : "Unknown vendor"),
11059 thinkpad_id.model_str,
11060 (thinkpad_id.nummodel_str) ?
11061 thinkpad_id.nummodel_str : "unknown");
11062}
5fba344c 11063
56b6aeb0 11064/* Module init, exit, parameters */
1da177e4 11065
a5763f22
HMH		 11066static struct ibm_init_struct ibms_init[] __initdata = {
11067 {
a5763f22
HMH		 11068 .data = &thinkpad_acpi_driver_data,
11069 },
11070 {
11071 .init = hotkey_init,
11072 .data = &hotkey_driver_data,
11073 },
11074 {
11075 .init = bluetooth_init,
11076 .data = &bluetooth_driver_data,
11077 },
11078 {
11079 .init = wan_init,
11080 .data = &wan_driver_data,
11081 },
0045c0aa
HMH		 11082 {
11083 .init = uwb_init,
11084 .data = &uwb_driver_data,
11085 },
d7c1d17d 11086#ifdef CONFIG_THINKPAD_ACPI_VIDEO
a5763f22
HMH		 11087 {
11088 .init = video_init,
b525c06c 11089 .base_procfs_mode = S_IRUSR,
a5763f22
HMH		 11090 .data = &video_driver_data,
11091 },
d7c1d17d 11092#endif
bb28f3d5
PR		 11093 {
11094 .init = kbdlight_init,
11095 .data = &kbdlight_driver_data,
11096 },
a5763f22
HMH		 11097 {
11098 .init = light_init,
11099 .data = &light_driver_data,
11100 },
a5763f22
HMH		 11101 {
11102 .init = cmos_init,
11103 .data = &cmos_driver_data,
11104 },
11105 {
11106 .init = led_init,
11107 .data = &led_driver_data,
11108 },
11109 {
11110 .init = beep_init,
11111 .data = &beep_driver_data,
11112 },
11113 {
11114 .init = thermal_init,
11115 .data = &thermal_driver_data,
11116 },
a5763f22
HMH		 11117 {
11118 .init = brightness_init,
11119 .data = &brightness_driver_data,
11120 },
11121 {
329e4e18 11122 .init = volume_init,
a5763f22
HMH		 11123 .data = &volume_driver_data,
11124 },
11125 {
11126 .init = fan_init,
11127 .data = &fan_driver_data,
11128 },
420f9739
DH		 11129 {
11130 .init = mute_led_init,
11131 .data = &mute_led_driver_data,
11132 },
2801b968
OG		 11133 {
11134 .init = tpacpi_battery_init,
11135 .data = &battery_driver_data,
11136 },
110ea1d8
AS		 11137 {
11138 .init = tpacpi_lcdshadow_init,
11139 .data = &lcdshadow_driver_data,
11140 },
acf7f4a5 11141 {
1ac09656
MP		 11142 .init = tpacpi_proxsensor_init,
11143 .data = &proxsensor_driver_data,
acf7f4a5 11144 },
c3bfcd4c
MP		 11145 {
11146 .init = tpacpi_dytc_profile_init,
11147 .data = &dytc_profile_driver_data,
11148 },
d7cbe277
NJ		 11149 {
11150 .init = tpacpi_kbdlang_init,
11151 .data = &kbdlang_driver_data,
11152 },
3feb52a2
NJ		 11153 {
11154 .init = tpacpi_dprc_init,
11155 .data = &dprc_driver_data,
11156 },
a5763f22
HMH		 11157};
11158
e4dca7b7 11159static int __init set_ibm_param(const char *val, const struct kernel_param *kp)
1da177e4
LT		 11160{
11161 unsigned int i;
a5763f22 11162 struct ibm_struct *ibm;
1da177e4 11163
59f91ff1
HMH		 11164 if (!kp || !kp->name || !val)
11165 return -EINVAL;
11166
a5763f22
HMH		 11167 for (i = 0; i < ARRAY_SIZE(ibms_init); i++) {
11168 ibm = ibms_init[i].data;
59f91ff1
HMH		 11169 WARN_ON(ibm == NULL);
11170
11171 if (!ibm || !ibm->name)
11172 continue;
a5763f22
HMH		 11173
11174 if (strcmp(ibm->name, kp->name) == 0 && ibm->write) {
be51bd45 11175 if (strlen(val) > sizeof(ibms_init[i].param) - 1)
78f81cc4 11176 return -ENOSPC;
a5763f22 11177 strcpy(ibms_init[i].param, val);
78f81cc4
BD		 11178 return 0;
11179 }
a5763f22 11180 }
1da177e4 11181
1da177e4
LT		 11182 return -EINVAL;
11183}
11184
b09c7225 11185module_param(experimental, int, 0444);
f68080f8 11186MODULE_PARM_DESC(experimental,
35ff8b9f 11187 "Enables experimental features when non-zero");
56b6aeb0 11188
132ce091 11189module_param_named(debug, dbg_level, uint, 0);
f68080f8 11190MODULE_PARM_DESC(debug, "Sets debug level bit-mask");
132ce091 11191
b09c7225 11192module_param(force_load, bool, 0444);
f68080f8 11193MODULE_PARM_DESC(force_load,
5cac62ac 11194 "Attempts to load the driver even on a mis-identified ThinkPad when true");
0dcef77c 11195
b09c7225 11196module_param_named(fan_control, fan_control_allowed, bool, 0444);
f68080f8 11197MODULE_PARM_DESC(fan_control,
35ff8b9f 11198 "Enables setting fan parameters features when true");
ecf2a80a 11199
b09c7225 11200module_param_named(brightness_mode, brightness_mode, uint, 0444);
f68080f8 11201MODULE_PARM_DESC(brightness_mode,
5cac62ac 11202 "Selects brightness control strategy: 0=auto, 1=EC, 2=UCMS, 3=EC+NVRAM");
24d3b774 11203
b09c7225 11204module_param(brightness_enable, uint, 0444);
f68080f8 11205MODULE_PARM_DESC(brightness_enable,
35ff8b9f 11206 "Enables backlight control when 1, disables when 0");
87cc537a 11207
ff850c33 11208#ifdef CONFIG_THINKPAD_ACPI_ALSA_SUPPORT
329e4e18
HMH		 11209module_param_named(volume_mode, volume_mode, uint, 0444);
11210MODULE_PARM_DESC(volume_mode,
5cac62ac 11211 "Selects volume control strategy: 0=auto, 1=EC, 2=N/A, 3=EC+NVRAM");
329e4e18 11212
a112ceee
HMH		 11213module_param_named(volume_capabilities, volume_capabilities, uint, 0444);
11214MODULE_PARM_DESC(volume_capabilities,
d33a7e57 11215 "Selects the mixer capabilities: 0=auto, 1=volume and mute, 2=mute only");
a112ceee 11216
c7ac6291
HMH		 11217module_param_named(volume_control, volume_control_allowed, bool, 0444);
11218MODULE_PARM_DESC(volume_control,
5cac62ac 11219 "Enables software override for the console audio control when true");
c7ac6291 11220
9a417ec0
AL		 11221module_param_named(software_mute, software_mute_requested, bool, 0444);
11222MODULE_PARM_DESC(software_mute,
11223 "Request full software mute control");
11224
0d204c34
HMH		 11225/* ALSA module API parameters */
11226module_param_named(index, alsa_index, int, 0444);
11227MODULE_PARM_DESC(index, "ALSA index for the ACPI EC Mixer");
11228module_param_named(id, alsa_id, charp, 0444);
11229MODULE_PARM_DESC(id, "ALSA id for the ACPI EC Mixer");
11230module_param_named(enable, alsa_enable, bool, 0444);
11231MODULE_PARM_DESC(enable, "Enable the ALSA interface for the ACPI EC Mixer");
ff850c33 11232#endif /* CONFIG_THINKPAD_ACPI_ALSA_SUPPORT */
0d204c34 11233
9b4bbbd2 11234/* The module parameter can't be read back, that's why 0 is used here */
e0c7dfe7 11235#define TPACPI_PARAM(feature) \
f68080f8 11236 module_param_call(feature, set_ibm_param, NULL, NULL, 0); \
5cac62ac 11237 MODULE_PARM_DESC(feature, "Simulates thinkpad-acpi procfs command at module load, see documentation")
1da177e4 11238
e0c7dfe7
HMH		 11239TPACPI_PARAM(hotkey);
11240TPACPI_PARAM(bluetooth);
11241TPACPI_PARAM(video);
11242TPACPI_PARAM(light);
e0c7dfe7
HMH		 11243TPACPI_PARAM(cmos);
11244TPACPI_PARAM(led);
11245TPACPI_PARAM(beep);
e0c7dfe7
HMH		 11246TPACPI_PARAM(brightness);
11247TPACPI_PARAM(volume);
11248TPACPI_PARAM(fan);
78f81cc4 11249
a73f3091 11250#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
b09c7225 11251module_param(dbg_wlswemul, uint, 0444);
a73f3091
HMH		 11252MODULE_PARM_DESC(dbg_wlswemul, "Enables WLSW emulation");
11253module_param_named(wlsw_state, tpacpi_wlsw_emulstate, bool, 0);
11254MODULE_PARM_DESC(wlsw_state,
11255 "Initial state of the emulated WLSW switch");
11256
b09c7225 11257module_param(dbg_bluetoothemul, uint, 0444);
a73f3091
HMH		 11258MODULE_PARM_DESC(dbg_bluetoothemul, "Enables bluetooth switch emulation");
11259module_param_named(bluetooth_state, tpacpi_bluetooth_emulstate, bool, 0);
11260MODULE_PARM_DESC(bluetooth_state,
11261 "Initial state of the emulated bluetooth switch");
11262
b09c7225 11263module_param(dbg_wwanemul, uint, 0444);
a73f3091
HMH		 11264MODULE_PARM_DESC(dbg_wwanemul, "Enables WWAN switch emulation");
11265module_param_named(wwan_state, tpacpi_wwan_emulstate, bool, 0);
11266MODULE_PARM_DESC(wwan_state,
11267 "Initial state of the emulated WWAN switch");
0045c0aa 11268
b09c7225 11269module_param(dbg_uwbemul, uint, 0444);
0045c0aa
HMH		 11270MODULE_PARM_DESC(dbg_uwbemul, "Enables UWB switch emulation");
11271module_param_named(uwb_state, tpacpi_uwb_emulstate, bool, 0);
11272MODULE_PARM_DESC(uwb_state,
11273 "Initial state of the emulated UWB switch");
a73f3091
HMH		 11274#endif
11275
b21a15f6
HMH		 11276static void thinkpad_acpi_module_exit(void)
11277{
11278 struct ibm_struct *ibm, *itmp;
11279
11280 tpacpi_lifecycle = TPACPI_LIFE_EXITING;
11281
11282 list_for_each_entry_safe_reverse(ibm, itmp,
11283 &tpacpi_all_drivers,
11284 all_drivers) {
11285 ibm_exit(ibm);
11286 }
11287
11288 dbg_printk(TPACPI_DBG_INIT, "finished subdriver exit path...\n");
11289
11290 if (tpacpi_inputdev) {
11291 if (tp_features.input_device_registered)
11292 input_unregister_device(tpacpi_inputdev);
11293 else
11294 input_free_device(tpacpi_inputdev);
00d39597 11295 kfree(hotkey_keycode_map);
b21a15f6
HMH		 11296 }
11297
11298 if (tpacpi_hwmon)
11299 hwmon_device_unregister(tpacpi_hwmon);
11300
b21a15f6
HMH		 11301 if (tpacpi_sensors_pdev)
11302 platform_device_unregister(tpacpi_sensors_pdev);
11303 if (tpacpi_pdev)
11304 platform_device_unregister(tpacpi_pdev);
11305
11306 if (tp_features.sensors_pdrv_attrs_registered)
11307 tpacpi_remove_driver_attributes(&tpacpi_hwmon_pdriver.driver);
11308 if (tp_features.platform_drv_attrs_registered)
11309 tpacpi_remove_driver_attributes(&tpacpi_pdriver.driver);
11310
11311 if (tp_features.sensors_pdrv_registered)
11312 platform_driver_unregister(&tpacpi_hwmon_pdriver);
11313
11314 if (tp_features.platform_drv_registered)
11315 platform_driver_unregister(&tpacpi_pdriver);
11316
11317 if (proc_dir)
e0c7dfe7 11318 remove_proc_entry(TPACPI_PROC_DIR, acpi_root_dir);
b21a15f6 11319
e0e3c061
HMH		 11320 if (tpacpi_wq)
11321 destroy_workqueue(tpacpi_wq);
11322
b21a15f6
HMH		 11323 kfree(thinkpad_id.bios_version_str);
11324 kfree(thinkpad_id.ec_version_str);
11325 kfree(thinkpad_id.model_str);
d2be15bd 11326 kfree(thinkpad_id.nummodel_str);
b21a15f6
HMH		 11327}
11328
f74a27d4 11329
1def7115 11330static int __init thinkpad_acpi_module_init(void)
1da177e4
LT		 11331{
11332 int ret, i;
11333
8fef502e
HMH		 11334 tpacpi_lifecycle = TPACPI_LIFE_INIT;
11335
54ae1501 11336 /* Driver-level probe */
d5a2f2f1 11337
bf20e740
HMH		 11338 ret = get_thinkpad_model_data(&thinkpad_id);
11339 if (ret) {
0978e012 11340 pr_err("unable to get DMI data: %d\n", ret);
bf20e740
HMH		 11341 thinkpad_acpi_module_exit();
11342 return ret;
11343 }
5fba344c 11344 ret = probe_for_thinkpad();
d5a2f2f1
HMH		 11345 if (ret) {
11346 thinkpad_acpi_module_exit();
5fba344c 11347 return ret;
d5a2f2f1 11348 }
1da177e4 11349
54ae1501 11350 /* Driver initialization */
d5a2f2f1 11351
7a43f788
HMH		 11352 thinkpad_acpi_init_banner();
11353 tpacpi_check_outdated_fw();
11354
e0c7dfe7
HMH		 11355 TPACPI_ACPIHANDLE_INIT(ecrd);
11356 TPACPI_ACPIHANDLE_INIT(ecwr);
1da177e4 11357
e0e3c061
HMH		 11358 tpacpi_wq = create_singlethread_workqueue(TPACPI_WORKQUEUE_NAME);
11359 if (!tpacpi_wq) {
11360 thinkpad_acpi_module_exit();
11361 return -ENOMEM;
11362 }
11363
e0c7dfe7 11364 proc_dir = proc_mkdir(TPACPI_PROC_DIR, acpi_root_dir);
1da177e4 11365 if (!proc_dir) {
0978e012 11366 pr_err("unable to create proc dir " TPACPI_PROC_DIR "\n");
1def7115 11367 thinkpad_acpi_module_exit();
1da177e4
LT		 11368 return -ENODEV;
11369 }
78f81cc4 11370
54ae1501
HMH		 11371 ret = platform_driver_register(&tpacpi_pdriver);
11372 if (ret) {
0978e012 11373 pr_err("unable to register main platform driver\n");
54ae1501
HMH		 11374 thinkpad_acpi_module_exit();
11375 return ret;
11376 }
ac36393d
HMH		 11377 tp_features.platform_drv_registered = 1;
11378
7fd40029
HMH		 11379 ret = platform_driver_register(&tpacpi_hwmon_pdriver);
11380 if (ret) {
0978e012 11381 pr_err("unable to register hwmon platform driver\n");
7fd40029
HMH		 11382 thinkpad_acpi_module_exit();
11383 return ret;
11384 }
11385 tp_features.sensors_pdrv_registered = 1;
11386
176750d6 11387 ret = tpacpi_create_driver_attributes(&tpacpi_pdriver.driver);
2369cc94
HMH		 11388 if (!ret) {
11389 tp_features.platform_drv_attrs_registered = 1;
35ff8b9f
HMH		 11390 ret = tpacpi_create_driver_attributes(
11391 &tpacpi_hwmon_pdriver.driver);
2369cc94 11392 }
176750d6 11393 if (ret) {
0978e012 11394 pr_err("unable to create sysfs driver attributes\n");
176750d6
HMH		 11395 thinkpad_acpi_module_exit();
11396 return ret;
11397 }
2369cc94 11398 tp_features.sensors_pdrv_attrs_registered = 1;
176750d6 11399
54ae1501
HMH		 11400
11401 /* Device initialization */
e0c7dfe7 11402 tpacpi_pdev = platform_device_register_simple(TPACPI_DRVR_NAME, -1,
54ae1501
HMH		 11403 NULL, 0);
11404 if (IS_ERR(tpacpi_pdev)) {
11405 ret = PTR_ERR(tpacpi_pdev);
11406 tpacpi_pdev = NULL;
0978e012 11407 pr_err("unable to register platform device\n");
54ae1501
HMH		 11408 thinkpad_acpi_module_exit();
11409 return ret;
11410 }
7fd40029 11411 tpacpi_sensors_pdev = platform_device_register_simple(
35ff8b9f
HMH		 11412 TPACPI_HWMON_DRVR_NAME,
11413 -1, NULL, 0);
7fd40029
HMH		 11414 if (IS_ERR(tpacpi_sensors_pdev)) {
11415 ret = PTR_ERR(tpacpi_sensors_pdev);
11416 tpacpi_sensors_pdev = NULL;
0978e012 11417 pr_err("unable to register hwmon platform device\n");
7fd40029
HMH		 11418 thinkpad_acpi_module_exit();
11419 return ret;
11420 }
7fd40029 11421 tp_features.sensors_pdev_attrs_registered = 1;
6b99e356
SF		 11422 tpacpi_hwmon = hwmon_device_register_with_groups(
11423 &tpacpi_sensors_pdev->dev, TPACPI_NAME, NULL, NULL);
11424
54ae1501
HMH		 11425 if (IS_ERR(tpacpi_hwmon)) {
11426 ret = PTR_ERR(tpacpi_hwmon);
11427 tpacpi_hwmon = NULL;
0978e012 11428 pr_err("unable to register hwmon device\n");
54ae1501
HMH		 11429 thinkpad_acpi_module_exit();
11430 return ret;
11431 }
8523ed6f 11432 mutex_init(&tpacpi_inputdev_send_mutex);
7f5d1cd6
HMH		 11433 tpacpi_inputdev = input_allocate_device();
11434 if (!tpacpi_inputdev) {
7f5d1cd6
HMH		 11435 thinkpad_acpi_module_exit();
11436 return -ENOMEM;
11437 } else {
11438 /* Prepare input device, but don't register */
11439 tpacpi_inputdev->name = "ThinkPad Extra Buttons";
e0c7dfe7 11440 tpacpi_inputdev->phys = TPACPI_DRVR_NAME "/input0";
7f5d1cd6 11441 tpacpi_inputdev->id.bustype = BUS_HOST;
e28393c0 11442 tpacpi_inputdev->id.vendor = thinkpad_id.vendor;
7f5d1cd6
HMH		 11443 tpacpi_inputdev->id.product = TPACPI_HKEY_INPUT_PRODUCT;
11444 tpacpi_inputdev->id.version = TPACPI_HKEY_INPUT_VERSION;
d112ef95 11445 tpacpi_inputdev->dev.parent = &tpacpi_pdev->dev;
7f5d1cd6 11446 }
77775838
HMH		 11447
11448 /* Init subdriver dependencies */
11449 tpacpi_detect_brightness_capabilities();
11450
11451 /* Init subdrivers */
a5763f22
HMH		 11452 for (i = 0; i < ARRAY_SIZE(ibms_init); i++) {
11453 ret = ibm_init(&ibms_init[i]);
11454 if (ret >= 0 && *ibms_init[i].param)
11455 ret = ibms_init[i].data->write(ibms_init[i].param);
1da177e4 11456 if (ret < 0) {
1def7115 11457 thinkpad_acpi_module_exit();
1da177e4
LT		 11458 return ret;
11459 }
11460 }
b589ea4c
HMH		 11461
11462 tpacpi_lifecycle = TPACPI_LIFE_RUNNING;
11463
7f5d1cd6
HMH		 11464 ret = input_register_device(tpacpi_inputdev);
11465 if (ret < 0) {
0978e012 11466 pr_err("unable to register input device\n");
7f5d1cd6
HMH		 11467 thinkpad_acpi_module_exit();
11468 return ret;
11469 } else {
11470 tp_features.input_device_registered = 1;
11471 }
1da177e4
LT		 11472
11473 return 0;
11474}
11475
95e57ab2
HMH		 11476MODULE_ALIAS(TPACPI_DRVR_SHORTNAME);
11477
922fe097
HMH		 11478/*
11479 * This will autoload the driver in almost every ThinkPad
11480 * in widespread use.
11481 *
11482 * Only _VERY_ old models, like the 240, 240x and 570 lack
11483 * the HKEY event interface.
11484 */
11485MODULE_DEVICE_TABLE(acpi, ibm_htk_device_ids);
11486
f68080f8
HMH		 11487/*
11488 * DMI matching for module autoloading
11489 *
19206a1e
AK		 11490 * See https://thinkwiki.org/wiki/List_of_DMI_IDs
11491 * See https://thinkwiki.org/wiki/BIOS_Upgrade_Downloads
f68080f8
HMH		 11492 *
11493 * Only models listed in thinkwiki will be supported, so add yours
11494 * if it is not there yet.
11495 */
11496#define IBM_BIOS_MODULE_ALIAS(__type) \
b36a50f9 11497 MODULE_ALIAS("dmi:bvnIBM:bvr" __type "ET??WW*")
f68080f8 11498
f68080f8
HMH		 11499/* Ancient thinkpad BIOSes have to be identified by
11500 * BIOS type or model number, and there are far less
11501 * BIOS types than model numbers... */
922fe097 11502IBM_BIOS_MODULE_ALIAS("I[MU]"); /* 570, 570e */
f68080f8 11503
f68f53a2
HMH		 11504MODULE_AUTHOR("Borislav Deianov <borislav@users.sf.net>");
11505MODULE_AUTHOR("Henrique de Moraes Holschuh <hmh@hmh.eng.br>");
e0c7dfe7
HMH		 11506MODULE_DESCRIPTION(TPACPI_DESC);
11507MODULE_VERSION(TPACPI_VERSION);
f68080f8
HMH		 11508MODULE_LICENSE("GPL");
11509
1def7115
HMH		 11510module_init(thinkpad_acpi_module_init);
11511module_exit(thinkpad_acpi_module_exit);
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