]> git.proxmox.com Git - mirror_ubuntu-bionic-kernel.git/blame - drivers/platform/x86/thinkpad_acpi.c
projects / mirror_ubuntu-bionic-kernel.git / blame
? search:
summary | shortlog | log | commit | commitdiff | tree
blob | blame (incremental) | history | HEAD
platform/x86: thinkpad_acpi: Disable Bluetooth for some machines
[mirror_ubuntu-bionic-kernel.git] / drivers / platform / x86 / thinkpad_acpi.c
CommitLineData
1da177e4 1/*
643f12db 2 * thinkpad_acpi.c - ThinkPad ACPI Extras
1da177e4
LT		 3 *
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>
1da177e4
LT		 7 *
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
12 *
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
17 *
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
a62bc916
HMH		 20 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
21 * 02110-1301, USA.
78f81cc4
BD		 22 */
23
0978e012
JP		 24#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
25
420f9739 26#define TPACPI_VERSION "0.25"
6b99e356 27#define TPACPI_SYSFS_VERSION 0x030000
78f81cc4
BD		 28
29/*
1da177e4 30 * Changelog:
4b45cc07
HMH		 31 * 2007-10-20 changelog trimmed down
32 *
643f12db
HMH		 33 * 2007-03-27 0.14 renamed to thinkpad_acpi and moved to
34 * drivers/misc.
f9ff43a6
HMH		 35 *
36 * 2006-11-22 0.13 new maintainer
37 * changelog now lives in git commit history, and will
38 * not be updated further in-file.
837ca6dd 39 *
78f81cc4
BD		 40 * 2005-03-17 0.11 support for 600e, 770x
41 * thanks to Jamie Lentin <lentinj@dial.pipex.com>
4b45cc07
HMH		 42 *
43 * 2005-01-16 0.9 use MODULE_VERSION
78f81cc4
BD		 44 * thanks to Henrik Brix Andersen <brix@gentoo.org>
45 * fix parameter passing on module loading
46 * thanks to Rusty Russell <rusty@rustcorp.com.au>
47 * thanks to Jim Radford <radford@blackbean.org>
48 * 2004-11-08 0.8 fix init error case, don't return from a macro
49 * thanks to Chris Wright <chrisw@osdl.org>
1da177e4
LT		 50 */
51
0c78039f
HMH		 52#include <linux/kernel.h>
53#include <linux/module.h>
54#include <linux/init.h>
55#include <linux/types.h>
56#include <linux/string.h>
57#include <linux/list.h>
58#include <linux/mutex.h>
73a94d86 59#include <linux/sched.h>
0c78039f
HMH		 60#include <linux/kthread.h>
61#include <linux/freezer.h>
62#include <linux/delay.h>
5a0e3ad6 63#include <linux/slab.h>
0c78039f
HMH		 64#include <linux/nvram.h>
65#include <linux/proc_fs.h>
887965e6 66#include <linux/seq_file.h>
0c78039f
HMH		 67#include <linux/sysfs.h>
68#include <linux/backlight.h>
69#include <linux/fb.h>
70#include <linux/platform_device.h>
71#include <linux/hwmon.h>
72#include <linux/hwmon-sysfs.h>
73#include <linux/input.h>
4fa6811b 74#include <linux/leds.h>
0e74dc26 75#include <linux/rfkill.h>
0c78039f
HMH		 76#include <linux/dmi.h>
77#include <linux/jiffies.h>
78#include <linux/workqueue.h>
8b48463f 79#include <linux/acpi.h>
cb299cfa 80#include <linux/pci.h>
8b48463f 81#include <linux/thinkpad_acpi.h>
0d204c34
HMH		 82#include <sound/core.h>
83#include <sound/control.h>
84#include <sound/initval.h>
7c0f6ba6 85#include <linux/uaccess.h>
b33c6ce5 86#include <acpi/video.h>
0c78039f
HMH		 87
88/* ThinkPad CMOS commands */
89#define TP_CMOS_VOLUME_DOWN 0
90#define TP_CMOS_VOLUME_UP 1
91#define TP_CMOS_VOLUME_MUTE 2
92#define TP_CMOS_BRIGHTNESS_UP 4
93#define TP_CMOS_BRIGHTNESS_DOWN 5
4fa6811b
HMH		 94#define TP_CMOS_THINKLIGHT_ON 12
95#define TP_CMOS_THINKLIGHT_OFF 13
0c78039f
HMH		 96
97/* NVRAM Addresses */
98enum tp_nvram_addr {
99 TP_NVRAM_ADDR_HK2 = 0x57,
100 TP_NVRAM_ADDR_THINKLIGHT = 0x58,
101 TP_NVRAM_ADDR_VIDEO = 0x59,
102 TP_NVRAM_ADDR_BRIGHTNESS = 0x5e,
103 TP_NVRAM_ADDR_MIXER = 0x60,
104};
105
106/* NVRAM bit masks */
107enum {
108 TP_NVRAM_MASK_HKT_THINKPAD = 0x08,
109 TP_NVRAM_MASK_HKT_ZOOM = 0x20,
110 TP_NVRAM_MASK_HKT_DISPLAY = 0x40,
111 TP_NVRAM_MASK_HKT_HIBERNATE = 0x80,
112 TP_NVRAM_MASK_THINKLIGHT = 0x10,
113 TP_NVRAM_MASK_HKT_DISPEXPND = 0x30,
114 TP_NVRAM_MASK_HKT_BRIGHTNESS = 0x20,
115 TP_NVRAM_MASK_LEVEL_BRIGHTNESS = 0x0f,
116 TP_NVRAM_POS_LEVEL_BRIGHTNESS = 0,
117 TP_NVRAM_MASK_MUTE = 0x40,
118 TP_NVRAM_MASK_HKT_VOLUME = 0x80,
119 TP_NVRAM_MASK_LEVEL_VOLUME = 0x0f,
120 TP_NVRAM_POS_LEVEL_VOLUME = 0,
121};
122
5d756db9
HMH		 123/* Misc NVRAM-related */
124enum {
125 TP_NVRAM_LEVEL_VOLUME_MAX = 14,
126};
127
b21a15f6 128/* ACPI HIDs */
9fbdaeb4
MI		 129#define TPACPI_ACPI_IBM_HKEY_HID "IBM0068"
130#define TPACPI_ACPI_LENOVO_HKEY_HID "LEN0068"
a3c42a46 131#define TPACPI_ACPI_LENOVO_HKEY_V2_HID "LEN0268"
437e470c 132#define TPACPI_ACPI_EC_HID "PNP0C09"
b21a15f6
HMH		 133
134/* Input IDs */
135#define TPACPI_HKEY_INPUT_PRODUCT 0x5054 /* "TP" */
136#define TPACPI_HKEY_INPUT_VERSION 0x4101
137
153f8220
HMH		 138/* ACPI \WGSV commands */
139enum {
140 TP_ACPI_WGSV_GET_STATE = 0x01, /* Get state information */
141 TP_ACPI_WGSV_PWR_ON_ON_RESUME = 0x02, /* Resume WWAN powered on */
142 TP_ACPI_WGSV_PWR_OFF_ON_RESUME = 0x03, /* Resume WWAN powered off */
143 TP_ACPI_WGSV_SAVE_STATE = 0x04, /* Save state for S4/S5 */
144};
145
146/* TP_ACPI_WGSV_GET_STATE bits */
147enum {
148 TP_ACPI_WGSV_STATE_WWANEXIST = 0x0001, /* WWAN hw available */
149 TP_ACPI_WGSV_STATE_WWANPWR = 0x0002, /* WWAN radio enabled */
150 TP_ACPI_WGSV_STATE_WWANPWRRES = 0x0004, /* WWAN state at resume */
151 TP_ACPI_WGSV_STATE_WWANBIOSOFF = 0x0008, /* WWAN disabled in BIOS */
152 TP_ACPI_WGSV_STATE_BLTHEXIST = 0x0001, /* BLTH hw available */
153 TP_ACPI_WGSV_STATE_BLTHPWR = 0x0002, /* BLTH radio enabled */
154 TP_ACPI_WGSV_STATE_BLTHPWRRES = 0x0004, /* BLTH state at resume */
155 TP_ACPI_WGSV_STATE_BLTHBIOSOFF = 0x0008, /* BLTH disabled in BIOS */
156 TP_ACPI_WGSV_STATE_UWBEXIST = 0x0010, /* UWB hw available */
157 TP_ACPI_WGSV_STATE_UWBPWR = 0x0020, /* UWB radio enabled */
158};
b21a15f6 159
67bcae6e
HMH		 160/* HKEY events */
161enum tpacpi_hkey_event_t {
162 /* Hotkey-related */
163 TP_HKEY_EV_HOTKEY_BASE = 0x1001, /* first hotkey (FN+F1) */
164 TP_HKEY_EV_BRGHT_UP = 0x1010, /* Brightness up */
165 TP_HKEY_EV_BRGHT_DOWN = 0x1011, /* Brightness down */
c685e20d 166 TP_HKEY_EV_KBD_LIGHT = 0x1012, /* Thinklight/kbd backlight */
67bcae6e
HMH		 167 TP_HKEY_EV_VOL_UP = 0x1015, /* Volume up or unmute */
168 TP_HKEY_EV_VOL_DOWN = 0x1016, /* Volume down or unmute */
169 TP_HKEY_EV_VOL_MUTE = 0x1017, /* Mixer output mute */
170
171 /* Reasons for waking up from S3/S4 */
172 TP_HKEY_EV_WKUP_S3_UNDOCK = 0x2304, /* undock requested, S3 */
173 TP_HKEY_EV_WKUP_S4_UNDOCK = 0x2404, /* undock requested, S4 */
174 TP_HKEY_EV_WKUP_S3_BAYEJ = 0x2305, /* bay ejection req, S3 */
175 TP_HKEY_EV_WKUP_S4_BAYEJ = 0x2405, /* bay ejection req, S4 */
176 TP_HKEY_EV_WKUP_S3_BATLOW = 0x2313, /* battery empty, S3 */
177 TP_HKEY_EV_WKUP_S4_BATLOW = 0x2413, /* battery empty, S4 */
178
179 /* Auto-sleep after eject request */
180 TP_HKEY_EV_BAYEJ_ACK = 0x3003, /* bay ejection complete */
181 TP_HKEY_EV_UNDOCK_ACK = 0x4003, /* undock complete */
182
183 /* Misc bay events */
184 TP_HKEY_EV_OPTDRV_EJ = 0x3006, /* opt. drive tray ejected */
a50245af
HMH		 185 TP_HKEY_EV_HOTPLUG_DOCK = 0x4010, /* docked into hotplug dock
186 or port replicator */
187 TP_HKEY_EV_HOTPLUG_UNDOCK = 0x4011, /* undocked from hotplug
188 dock or port replicator */
67bcae6e
HMH		 189
190 /* User-interface events */
191 TP_HKEY_EV_LID_CLOSE = 0x5001, /* laptop lid closed */
192 TP_HKEY_EV_LID_OPEN = 0x5002, /* laptop lid opened */
193 TP_HKEY_EV_TABLET_TABLET = 0x5009, /* tablet swivel up */
194 TP_HKEY_EV_TABLET_NOTEBOOK = 0x500a, /* tablet swivel down */
b03f4d49
L		 195 TP_HKEY_EV_TABLET_CHANGED = 0x60c0, /* X1 Yoga (2016):
196 * enter/leave tablet mode
197 */
67bcae6e
HMH		 198 TP_HKEY_EV_PEN_INSERTED = 0x500b, /* tablet pen inserted */
199 TP_HKEY_EV_PEN_REMOVED = 0x500c, /* tablet pen removed */
200 TP_HKEY_EV_BRGHT_CHANGED = 0x5010, /* backlight control event */
201
2d43f671
HMH		 202 /* Key-related user-interface events */
203 TP_HKEY_EV_KEY_NUMLOCK = 0x6000, /* NumLock key pressed */
204 TP_HKEY_EV_KEY_FN = 0x6005, /* Fn key pressed? E420 */
67ab6248 205 TP_HKEY_EV_KEY_FN_ESC = 0x6060, /* Fn+Esc key pressed X240 */
2d43f671 206
67bcae6e
HMH		 207 /* Thermal events */
208 TP_HKEY_EV_ALARM_BAT_HOT = 0x6011, /* battery too hot */
209 TP_HKEY_EV_ALARM_BAT_XHOT = 0x6012, /* battery critically hot */
210 TP_HKEY_EV_ALARM_SENSOR_HOT = 0x6021, /* sensor too hot */
211 TP_HKEY_EV_ALARM_SENSOR_XHOT = 0x6022, /* sensor critically hot */
212 TP_HKEY_EV_THM_TABLE_CHANGED = 0x6030, /* thermal table changed */
213
6f62bc3e
RH		 214 /* AC-related events */
215 TP_HKEY_EV_AC_CHANGED = 0x6040, /* AC status changed */
2d43f671 216
5e6a2722
DH		 217 /* Further user-interface events */
218 TP_HKEY_EV_PALM_DETECTED = 0x60b0, /* palm hoveres keyboard */
219 TP_HKEY_EV_PALM_UNDETECTED = 0x60b1, /* palm removed */
220
67bcae6e
HMH		 221 /* Misc */
222 TP_HKEY_EV_RFKILL_CHANGED = 0x7000, /* rfkill switch changed */
223};
224
b21a15f6
HMH		 225/****************************************************************************
226 * Main driver
227 */
228
e0c7dfe7
HMH		 229#define TPACPI_NAME "thinkpad"
230#define TPACPI_DESC "ThinkPad ACPI Extras"
231#define TPACPI_FILE TPACPI_NAME "_acpi"
232#define TPACPI_URL "http://ibm-acpi.sf.net/"
233#define TPACPI_MAIL "ibm-acpi-devel@lists.sourceforge.net"
b21a15f6 234
e0c7dfe7
HMH		 235#define TPACPI_PROC_DIR "ibm"
236#define TPACPI_ACPI_EVENT_PREFIX "ibm"
237#define TPACPI_DRVR_NAME TPACPI_FILE
95e57ab2 238#define TPACPI_DRVR_SHORTNAME "tpacpi"
e0c7dfe7 239#define TPACPI_HWMON_DRVR_NAME TPACPI_NAME "_hwmon"
b21a15f6 240
95e57ab2 241#define TPACPI_NVRAM_KTHREAD_NAME "ktpacpi_nvramd"
e0e3c061 242#define TPACPI_WORKQUEUE_NAME "ktpacpid"
95e57ab2 243
e0c7dfe7 244#define TPACPI_MAX_ACPI_ARGS 3
b21a15f6 245
7ff8d62f 246/* Debugging printk groups */
0c78039f 247#define TPACPI_DBG_ALL 0xffff
73a94d86 248#define TPACPI_DBG_DISCLOSETASK 0x8000
0c78039f
HMH		 249#define TPACPI_DBG_INIT 0x0001
250#define TPACPI_DBG_EXIT 0x0002
bee4cd9b 251#define TPACPI_DBG_RFKILL 0x0004
56e2c200 252#define TPACPI_DBG_HKEY 0x0008
74a60c0f 253#define TPACPI_DBG_FAN 0x0010
0e501834 254#define TPACPI_DBG_BRGHT 0x0020
329e4e18 255#define TPACPI_DBG_MIXER 0x0040
0c78039f 256
35ff8b9f
HMH		 257#define onoff(status, bit) ((status) & (1 << (bit)) ? "on" : "off")
258#define enabled(status, bit) ((status) & (1 << (bit)) ? "enabled" : "disabled")
259#define strlencmp(a, b) (strncmp((a), (b), strlen(b)))
0c78039f 260
0c78039f
HMH		 261
262/****************************************************************************
b21a15f6 263 * Driver-wide structs and misc. variables
0c78039f
HMH		 264 */
265
266struct ibm_struct;
267
268struct tp_acpi_drv_struct {
269 const struct acpi_device_id *hid;
270 struct acpi_driver *driver;
271
272 void (*notify) (struct ibm_struct *, u32);
273 acpi_handle *handle;
274 u32 type;
275 struct acpi_device *device;
276};
277
278struct ibm_struct {
279 char *name;
280
887965e6 281 int (*read) (struct seq_file *);
0c78039f
HMH		 282 int (*write) (char *);
283 void (*exit) (void);
284 void (*resume) (void);
fd3c3a42 285 void (*suspend) (void);
90d9d3c7 286 void (*shutdown) (void);
0c78039f
HMH		 287
288 struct list_head all_drivers;
289
290 struct tp_acpi_drv_struct *acpi;
291
292 struct {
293 u8 acpi_driver_registered:1;
294 u8 acpi_notify_installed:1;
295 u8 proc_created:1;
296 u8 init_called:1;
297 u8 experimental:1;
298 } flags;
299};
300
301struct ibm_init_struct {
302 char param[32];
303
304 int (*init) (struct ibm_init_struct *);
d161a13f 305 umode_t base_procfs_mode;
0c78039f
HMH		 306 struct ibm_struct *data;
307};
308
309static struct {
0c78039f
HMH		 310 u32 bluetooth:1;
311 u32 hotkey:1;
312 u32 hotkey_mask:1;
313 u32 hotkey_wlsw:1;
b3180028
L		 314 enum {
315 TP_HOTKEY_TABLET_NONE = 0,
316 TP_HOTKEY_TABLET_USES_MHKG,
dda3ec0a 317 TP_HOTKEY_TABLET_USES_GMMS,
b3180028 318 } hotkey_tablet;
bb28f3d5 319 u32 kbdlight:1;
0c78039f
HMH		 320 u32 light:1;
321 u32 light_status:1;
b5972796 322 u32 bright_acpimode:1;
77775838 323 u32 bright_unkfw:1;
0c78039f 324 u32 wan:1;
0045c0aa 325 u32 uwb:1;
0c78039f 326 u32 fan_ctrl_status_undef:1;
d7377247 327 u32 second_fan:1;
60201732 328 u32 beep_needs_two_args:1;
a112ceee 329 u32 mixer_no_level_control:1;
0c78039f
HMH		 330 u32 input_device_registered:1;
331 u32 platform_drv_registered:1;
332 u32 platform_drv_attrs_registered:1;
333 u32 sensors_pdrv_registered:1;
334 u32 sensors_pdrv_attrs_registered:1;
335 u32 sensors_pdev_attrs_registered:1;
336 u32 hotkey_poll_active:1;
f23a5bcb 337 u32 has_adaptive_kbd:1;
0c78039f
HMH		 338} tp_features;
339
92889022
HMH		 340static struct {
341 u16 hotkey_mask_ff:1;
c7ac6291 342 u16 volume_ctrl_forbidden:1;
92889022
HMH		 343} tp_warned;
344
0c78039f
HMH		 345struct thinkpad_id_data {
346 unsigned int vendor; /* ThinkPad vendor:
347 * PCI_VENDOR_ID_IBM/PCI_VENDOR_ID_LENOVO */
348
349 char *bios_version_str; /* Something like 1ZET51WW (1.03z) */
350 char *ec_version_str; /* Something like 1ZHT51WW-1.04a */
351
050df107 352 u16 bios_model; /* 1Y = 0x5931, 0 = unknown */
0c78039f 353 u16 ec_model;
050df107
HMH		 354 u16 bios_release; /* 1ZETK1WW = 0x314b, 0 = unknown */
355 u16 ec_release;
0c78039f 356
8c74adbc
HMH		 357 char *model_str; /* ThinkPad T43 */
358 char *nummodel_str; /* 9384A9C for a 9384-A9C model */
0c78039f 359};
0c78039f
HMH		 360static struct thinkpad_id_data thinkpad_id;
361
8fef502e
HMH		 362static enum {
363 TPACPI_LIFE_INIT = 0,
364 TPACPI_LIFE_RUNNING,
365 TPACPI_LIFE_EXITING,
366} tpacpi_lifecycle;
367
b21a15f6
HMH		 368static int experimental;
369static u32 dbg_level;
370
e0e3c061
HMH		 371static struct workqueue_struct *tpacpi_wq;
372
75bd3bf2
HMH		 373enum led_status_t {
374 TPACPI_LED_OFF = 0,
375 TPACPI_LED_ON,
376 TPACPI_LED_BLINK,
377};
378
86ec0c2c 379/* tpacpi LED class */
4fa6811b
HMH		 380struct tpacpi_led_classdev {
381 struct led_classdev led_classdev;
edf2d778 382 int led;
4fa6811b
HMH		 383};
384
77775838
HMH		 385/* brightness level capabilities */
386static unsigned int bright_maxlvl; /* 0 = unknown */
387
a73f3091
HMH		 388#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
389static int dbg_wlswemul;
90ab5ee9 390static bool tpacpi_wlsw_emulstate;
a73f3091 391static int dbg_bluetoothemul;
90ab5ee9 392static bool tpacpi_bluetooth_emulstate;
a73f3091 393static int dbg_wwanemul;
90ab5ee9 394static bool tpacpi_wwan_emulstate;
0045c0aa 395static int dbg_uwbemul;
90ab5ee9 396static bool tpacpi_uwb_emulstate;
a73f3091
HMH		 397#endif
398
399
3dcc2c3b
HMH		 400/*************************************************************************
401 * Debugging helpers
402 */
403
0978e012
JP		 404#define dbg_printk(a_dbg_level, format, arg...) \
405do { \
406 if (dbg_level & (a_dbg_level)) \
407 printk(KERN_DEBUG pr_fmt("%s: " format), \
408 __func__, ##arg); \
409} while (0)
3dcc2c3b
HMH		 410
411#ifdef CONFIG_THINKPAD_ACPI_DEBUG
412#define vdbg_printk dbg_printk
413static const char *str_supported(int is_supported);
414#else
0978e012
JP		 415static inline const char *str_supported(int is_supported) { return ""; }
416#define vdbg_printk(a_dbg_level, format, arg...) \
efd85cf8 417 do { if (0) no_printk(format, ##arg); } while (0)
3dcc2c3b
HMH		 418#endif
419
73a94d86
HMH		 420static void tpacpi_log_usertask(const char * const what)
421{
0978e012
JP		 422 printk(KERN_DEBUG pr_fmt("%s: access by process with PID %d\n"),
423 what, task_tgid_vnr(current));
73a94d86
HMH		 424}
425
0978e012
JP		 426#define tpacpi_disclose_usertask(what, format, arg...) \
427do { \
428 if (unlikely((dbg_level & TPACPI_DBG_DISCLOSETASK) && \
429 (tpacpi_lifecycle == TPACPI_LIFE_RUNNING))) { \
430 printk(KERN_DEBUG pr_fmt("%s: PID %d: " format), \
431 what, task_tgid_vnr(current), ## arg); \
432 } \
433} while (0)
3dcc2c3b 434
7d95a3d5
HMH		 435/*
436 * Quirk handling helpers
437 *
438 * ThinkPad IDs and versions seen in the field so far
439 * are two-characters from the set [0-9A-Z], i.e. base 36.
440 *
441 * We use values well outside that range as specials.
442 */
443
444#define TPACPI_MATCH_ANY 0xffffU
445#define TPACPI_MATCH_UNKNOWN 0U
446
447/* TPID('1', 'Y') == 0x5931 */
448#define TPID(__c1, __c2) (((__c2) << 8) | (__c1))
449
450#define TPACPI_Q_IBM(__id1, __id2, __quirk) \
451 { .vendor = PCI_VENDOR_ID_IBM, \
452 .bios = TPID(__id1, __id2), \
453 .ec = TPACPI_MATCH_ANY, \
454 .quirks = (__quirk) }
455
456#define TPACPI_Q_LNV(__id1, __id2, __quirk) \
457 { .vendor = PCI_VENDOR_ID_LENOVO, \
458 .bios = TPID(__id1, __id2), \
459 .ec = TPACPI_MATCH_ANY, \
460 .quirks = (__quirk) }
461
a112ceee
HMH		 462#define TPACPI_QEC_LNV(__id1, __id2, __quirk) \
463 { .vendor = PCI_VENDOR_ID_LENOVO, \
464 .bios = TPACPI_MATCH_ANY, \
465 .ec = TPID(__id1, __id2), \
466 .quirks = (__quirk) }
467
7d95a3d5
HMH		 468struct tpacpi_quirk {
469 unsigned int vendor;
470 u16 bios;
471 u16 ec;
472 unsigned long quirks;
473};
474
475/**
476 * tpacpi_check_quirks() - search BIOS/EC version on a list
477 * @qlist: array of &struct tpacpi_quirk
478 * @qlist_size: number of elements in @qlist
479 *
480 * Iterates over a quirks list until one is found that matches the
481 * ThinkPad's vendor, BIOS and EC model.
482 *
483 * Returns 0 if nothing matches, otherwise returns the quirks field of
484 * the matching &struct tpacpi_quirk entry.
485 *
486 * The match criteria is: vendor, ec and bios much match.
487 */
488static unsigned long __init tpacpi_check_quirks(
489 const struct tpacpi_quirk *qlist,
490 unsigned int qlist_size)
491{
492 while (qlist_size) {
493 if ((qlist->vendor == thinkpad_id.vendor ||
494 qlist->vendor == TPACPI_MATCH_ANY) &&
495 (qlist->bios == thinkpad_id.bios_model ||
496 qlist->bios == TPACPI_MATCH_ANY) &&
497 (qlist->ec == thinkpad_id.ec_model ||
498 qlist->ec == TPACPI_MATCH_ANY))
499 return qlist->quirks;
500
501 qlist_size--;
502 qlist++;
503 }
504 return 0;
505}
506
e28393c0
HMH		 507static inline bool __pure __init tpacpi_is_lenovo(void)
508{
509 return thinkpad_id.vendor == PCI_VENDOR_ID_LENOVO;
510}
511
512static inline bool __pure __init tpacpi_is_ibm(void)
513{
514 return thinkpad_id.vendor == PCI_VENDOR_ID_IBM;
515}
7d95a3d5 516
56b6aeb0
HMH		 517/****************************************************************************
518 ****************************************************************************
519 *
520 * ACPI Helpers and device model
521 *
522 ****************************************************************************
523 ****************************************************************************/
524
525/*************************************************************************
526 * ACPI basic handles
527 */
1da177e4 528
94954cc6 529static acpi_handle root_handle;
437e470c 530static acpi_handle ec_handle;
1da177e4 531
e0c7dfe7 532#define TPACPI_HANDLE(object, parent, paths...) \
1da177e4 533 static acpi_handle object##_handle; \
3bd01896 534 static const acpi_handle * const object##_parent __initconst = \
ef07a5ab
HMH		 535 &parent##_handle; \
536 static char *object##_paths[] __initdata = { paths }
1da177e4 537
e0c7dfe7
HMH		 538TPACPI_HANDLE(ecrd, ec, "ECRD"); /* 570 */
539TPACPI_HANDLE(ecwr, ec, "ECWR"); /* 570 */
78f81cc4 540
35ff8b9f
HMH		 541TPACPI_HANDLE(cmos, root, "\\UCMS", /* R50, R50e, R50p, R51, */
542 /* T4x, X31, X40 */
78f81cc4
BD		 543 "\\CMOS", /* A3x, G4x, R32, T23, T30, X22-24, X30 */
544 "\\CMS", /* R40, R40e */
56b6aeb0 545 ); /* all others */
78f81cc4 546
e0c7dfe7 547TPACPI_HANDLE(hkey, ec, "\\_SB.HKEY", /* 600e/x, 770e, 770x */
78f81cc4
BD		 548 "^HKEY", /* R30, R31 */
549 "HKEY", /* all others */
56b6aeb0 550 ); /* 570 */
78f81cc4 551
56b6aeb0
HMH		 552/*************************************************************************
553 * ACPI helpers
a8b7a662
HMH		 554 */
555
1da177e4 556static int acpi_evalf(acpi_handle handle,
eceeb437 557 int *res, char *method, char *fmt, ...)
1da177e4
LT		 558{
559 char *fmt0 = fmt;
78f81cc4 560 struct acpi_object_list params;
e0c7dfe7 561 union acpi_object in_objs[TPACPI_MAX_ACPI_ARGS];
78f81cc4
BD		 562 struct acpi_buffer result, *resultp;
563 union acpi_object out_obj;
564 acpi_status status;
565 va_list ap;
566 char res_type;
567 int success;
568 int quiet;
1da177e4
LT		 569
570 if (!*fmt) {
0978e012 571 pr_err("acpi_evalf() called with empty format\n");
1da177e4
LT		 572 return 0;
573 }
574
575 if (*fmt == 'q') {
576 quiet = 1;
577 fmt++;
578 } else
579 quiet = 0;
580
581 res_type = *(fmt++);
582
583 params.count = 0;
584 params.pointer = &in_objs[0];
585
586 va_start(ap, fmt);
587 while (*fmt) {
588 char c = *(fmt++);
589 switch (c) {
590 case 'd': /* int */
591 in_objs[params.count].integer.value = va_arg(ap, int);
592 in_objs[params.count++].type = ACPI_TYPE_INTEGER;
593 break;
78f81cc4 594 /* add more types as needed */
1da177e4 595 default:
5cac62ac
AS		 596 pr_err("acpi_evalf() called with invalid format character '%c'\n",
597 c);
21365851 598 va_end(ap);
1da177e4
LT		 599 return 0;
600 }
601 }
602 va_end(ap);
603
78f81cc4
BD		 604 if (res_type != 'v') {
605 result.length = sizeof(out_obj);
606 result.pointer = &out_obj;
607 resultp = &result;
608 } else
609 resultp = NULL;
1da177e4 610
78f81cc4 611 status = acpi_evaluate_object(handle, method, &params, resultp);
1da177e4
LT		 612
613 switch (res_type) {
78f81cc4 614 case 'd': /* int */
263f4a30
HMH		 615 success = (status == AE_OK &&
616 out_obj.type == ACPI_TYPE_INTEGER);
617 if (success && res)
eceeb437 618 *res = out_obj.integer.value;
1da177e4 619 break;
78f81cc4 620 case 'v': /* void */
1da177e4
LT		 621 success = status == AE_OK;
622 break;
78f81cc4 623 /* add more types as needed */
1da177e4 624 default:
5cac62ac
AS		 625 pr_err("acpi_evalf() called with invalid format character '%c'\n",
626 res_type);
1da177e4
LT		 627 return 0;
628 }
629
56b6aeb0 630 if (!success && !quiet)
0978e012 631 pr_err("acpi_evalf(%s, %s, ...) failed: %s\n",
263f4a30 632 method, fmt0, acpi_format_exception(status));
56b6aeb0
HMH		 633
634 return success;
635}
636
35ff8b9f 637static int acpi_ec_read(int i, u8 *p)
56b6aeb0
HMH		 638{
639 int v;
640
641 if (ecrd_handle) {
642 if (!acpi_evalf(ecrd_handle, &v, NULL, "dd", i))
643 return 0;
644 *p = v;
645 } else {
646 if (ec_read(i, p) < 0)
647 return 0;
648 }
649
650 return 1;
651}
652
653static int acpi_ec_write(int i, u8 v)
654{
655 if (ecwr_handle) {
656 if (!acpi_evalf(ecwr_handle, NULL, NULL, "vdd", i, v))
657 return 0;
658 } else {
659 if (ec_write(i, v) < 0)
660 return 0;
661 }
662
663 return 1;
664}
665
c9bea99c
HMH		 666static int issue_thinkpad_cmos_command(int cmos_cmd)
667{
668 if (!cmos_handle)
669 return -ENXIO;
670
671 if (!acpi_evalf(cmos_handle, NULL, NULL, "vd", cmos_cmd))
672 return -EIO;
673
674 return 0;
675}
676
56b6aeb0
HMH		 677/*************************************************************************
678 * ACPI device model
679 */
680
35ff8b9f
HMH		 681#define TPACPI_ACPIHANDLE_INIT(object) \
682 drv_acpi_handle_init(#object, &object##_handle, *object##_parent, \
ef07a5ab 683 object##_paths, ARRAY_SIZE(object##_paths))
f74a27d4 684
ef07a5ab
HMH		 685static void __init drv_acpi_handle_init(const char *name,
686 acpi_handle *handle, const acpi_handle parent,
687 char **paths, const int num_paths)
56b6aeb0
HMH		 688{
689 int i;
690 acpi_status status;
691
5ae930e6
HMH		 692 vdbg_printk(TPACPI_DBG_INIT, "trying to locate ACPI handle for %s\n",
693 name);
694
56b6aeb0
HMH		 695 for (i = 0; i < num_paths; i++) {
696 status = acpi_get_handle(parent, paths[i], handle);
697 if (ACPI_SUCCESS(status)) {
5ae930e6
HMH		 698 dbg_printk(TPACPI_DBG_INIT,
699 "Found ACPI handle %s for %s\n",
ef07a5ab 700 paths[i], name);
56b6aeb0
HMH		 701 return;
702 }
703 }
704
5ae930e6
HMH		 705 vdbg_printk(TPACPI_DBG_INIT, "ACPI handle for %s not found\n",
706 name);
56b6aeb0
HMH		 707 *handle = NULL;
708}
709
437e470c
HMH		 710static acpi_status __init tpacpi_acpi_handle_locate_callback(acpi_handle handle,
711 u32 level, void *context, void **return_value)
712{
46445b6b
AL		 713 struct acpi_device *dev;
714 if (!strcmp(context, "video")) {
715 if (acpi_bus_get_device(handle, &dev))
716 return AE_OK;
717 if (strcmp(ACPI_VIDEO_HID, acpi_device_hid(dev)))
718 return AE_OK;
719 }
720
437e470c
HMH		 721 *(acpi_handle *)return_value = handle;
722
723 return AE_CTRL_TERMINATE;
724}
725
726static void __init tpacpi_acpi_handle_locate(const char *name,
727 const char *hid,
728 acpi_handle *handle)
729{
730 acpi_status status;
731 acpi_handle device_found;
732
46445b6b 733 BUG_ON(!name || !handle);
437e470c
HMH		 734 vdbg_printk(TPACPI_DBG_INIT,
735 "trying to locate ACPI handle for %s, using HID %s\n",
46445b6b 736 name, hid ? hid : "NULL");
437e470c
HMH		 737
738 memset(&device_found, 0, sizeof(device_found));
739 status = acpi_get_devices(hid, tpacpi_acpi_handle_locate_callback,
740 (void *)name, &device_found);
741
742 *handle = NULL;
743
744 if (ACPI_SUCCESS(status)) {
745 *handle = device_found;
746 dbg_printk(TPACPI_DBG_INIT,
747 "Found ACPI handle for %s\n", name);
748 } else {
749 vdbg_printk(TPACPI_DBG_INIT,
750 "Could not locate an ACPI handle for %s: %s\n",
751 name, acpi_format_exception(status));
752 }
753}
754
8d376cd6 755static void dispatch_acpi_notify(acpi_handle handle, u32 event, void *data)
56b6aeb0
HMH		 756{
757 struct ibm_struct *ibm = data;
758
8fef502e
HMH		 759 if (tpacpi_lifecycle != TPACPI_LIFE_RUNNING)
760 return;
761
8d376cd6 762 if (!ibm || !ibm->acpi || !ibm->acpi->notify)
56b6aeb0
HMH		 763 return;
764
8d376cd6 765 ibm->acpi->notify(ibm, event);
56b6aeb0
HMH		 766}
767
8d376cd6 768static int __init setup_acpi_notify(struct ibm_struct *ibm)
56b6aeb0
HMH		 769{
770 acpi_status status;
5ae930e6 771 int rc;
56b6aeb0 772
8d376cd6
HMH		 773 BUG_ON(!ibm->acpi);
774
775 if (!*ibm->acpi->handle)
56b6aeb0
HMH		 776 return 0;
777
5ae930e6 778 vdbg_printk(TPACPI_DBG_INIT,
fe08bc4b
HMH		 779 "setting up ACPI notify for %s\n", ibm->name);
780
5ae930e6
HMH		 781 rc = acpi_bus_get_device(*ibm->acpi->handle, &ibm->acpi->device);
782 if (rc < 0) {
0978e012 783 pr_err("acpi_bus_get_device(%s) failed: %d\n", ibm->name, rc);
56b6aeb0
HMH		 784 return -ENODEV;
785 }
786
db89b4f0 787 ibm->acpi->device->driver_data = ibm;
8d376cd6 788 sprintf(acpi_device_class(ibm->acpi->device), "%s/%s",
e0c7dfe7 789 TPACPI_ACPI_EVENT_PREFIX,
643f12db 790 ibm->name);
56b6aeb0 791
8d376cd6
HMH		 792 status = acpi_install_notify_handler(*ibm->acpi->handle,
793 ibm->acpi->type, dispatch_acpi_notify, ibm);
56b6aeb0
HMH		 794 if (ACPI_FAILURE(status)) {
795 if (status == AE_ALREADY_EXISTS) {
5cac62ac
AS		 796 pr_notice("another device driver is already handling %s events\n",
797 ibm->name);
56b6aeb0 798 } else {
0978e012 799 pr_err("acpi_install_notify_handler(%s) failed: %s\n",
72f19921 800 ibm->name, acpi_format_exception(status));
56b6aeb0
HMH		 801 }
802 return -ENODEV;
803 }
8d376cd6 804 ibm->flags.acpi_notify_installed = 1;
56b6aeb0
HMH		 805 return 0;
806}
807
8d376cd6 808static int __init tpacpi_device_add(struct acpi_device *device)
56b6aeb0
HMH		 809{
810 return 0;
811}
812
6700121b 813static int __init register_tpacpi_subdriver(struct ibm_struct *ibm)
56b6aeb0 814{
5ae930e6 815 int rc;
56b6aeb0 816
fe08bc4b
HMH		 817 dbg_printk(TPACPI_DBG_INIT,
818 "registering %s as an ACPI driver\n", ibm->name);
819
8d376cd6
HMH		 820 BUG_ON(!ibm->acpi);
821
822 ibm->acpi->driver = kzalloc(sizeof(struct acpi_driver), GFP_KERNEL);
823 if (!ibm->acpi->driver) {
0978e012 824 pr_err("failed to allocate memory for ibm->acpi->driver\n");
5fba344c 825 return -ENOMEM;
56b6aeb0
HMH		 826 }
827
e0c7dfe7 828 sprintf(ibm->acpi->driver->name, "%s_%s", TPACPI_NAME, ibm->name);
8d376cd6 829 ibm->acpi->driver->ids = ibm->acpi->hid;
1ba90e3a 830
8d376cd6 831 ibm->acpi->driver->ops.add = &tpacpi_device_add;
56b6aeb0 832
5ae930e6
HMH		 833 rc = acpi_bus_register_driver(ibm->acpi->driver);
834 if (rc < 0) {
0978e012 835 pr_err("acpi_bus_register_driver(%s) failed: %d\n",
1ba90e3a 836 ibm->name, rc);
8d376cd6
HMH		 837 kfree(ibm->acpi->driver);
838 ibm->acpi->driver = NULL;
5ae930e6 839 } else if (!rc)
8d376cd6 840 ibm->flags.acpi_driver_registered = 1;
56b6aeb0 841
5ae930e6 842 return rc;
56b6aeb0
HMH		 843}
844
845
846/****************************************************************************
847 ****************************************************************************
848 *
849 * Procfs Helpers
850 *
851 ****************************************************************************
852 ****************************************************************************/
853
887965e6 854static int dispatch_proc_show(struct seq_file *m, void *v)
56b6aeb0 855{
887965e6 856 struct ibm_struct *ibm = m->private;
56b6aeb0
HMH		 857
858 if (!ibm || !ibm->read)
859 return -EINVAL;
887965e6
AD		 860 return ibm->read(m);
861}
56b6aeb0 862
887965e6
AD		 863static int dispatch_proc_open(struct inode *inode, struct file *file)
864{
d9dda78b 865 return single_open(file, dispatch_proc_show, PDE_DATA(inode));
56b6aeb0
HMH		 866}
867
887965e6 868static ssize_t dispatch_proc_write(struct file *file,
35ff8b9f 869 const char __user *userbuf,
887965e6 870 size_t count, loff_t *pos)
56b6aeb0 871{
d9dda78b 872 struct ibm_struct *ibm = PDE_DATA(file_inode(file));
56b6aeb0
HMH		 873 char *kernbuf;
874 int ret;
875
876 if (!ibm || !ibm->write)
877 return -EINVAL;
5b05d469
MB		 878 if (count > PAGE_SIZE - 2)
879 return -EINVAL;
56b6aeb0
HMH		 880
881 kernbuf = kmalloc(count + 2, GFP_KERNEL);
882 if (!kernbuf)
883 return -ENOMEM;
1da177e4 884
56b6aeb0
HMH		 885 if (copy_from_user(kernbuf, userbuf, count)) {
886 kfree(kernbuf);
887 return -EFAULT;
888 }
1da177e4 889
56b6aeb0
HMH		 890 kernbuf[count] = 0;
891 strcat(kernbuf, ",");
892 ret = ibm->write(kernbuf);
893 if (ret == 0)
894 ret = count;
1da177e4 895
56b6aeb0
HMH		 896 kfree(kernbuf);
897
898 return ret;
1da177e4
LT		 899}
900
887965e6
AD		 901static const struct file_operations dispatch_proc_fops = {
902 .owner = THIS_MODULE,
903 .open = dispatch_proc_open,
904 .read = seq_read,
905 .llseek = seq_lseek,
906 .release = single_release,
907 .write = dispatch_proc_write,
908};
909
1da177e4
LT		 910static char *next_cmd(char **cmds)
911{
912 char *start = *cmds;
913 char *end;
914
915 while ((end = strchr(start, ',')) && end == start)
916 start = end + 1;
917
918 if (!end)
919 return NULL;
920
921 *end = 0;
922 *cmds = end + 1;
923 return start;
924}
925
56b6aeb0 926
54ae1501
HMH		 927/****************************************************************************
928 ****************************************************************************
929 *
7f5d1cd6 930 * Device model: input, hwmon and platform
54ae1501
HMH		 931 *
932 ****************************************************************************
933 ****************************************************************************/
934
94954cc6 935static struct platform_device *tpacpi_pdev;
7fd40029 936static struct platform_device *tpacpi_sensors_pdev;
1beeffe4 937static struct device *tpacpi_hwmon;
7f5d1cd6 938static struct input_dev *tpacpi_inputdev;
8523ed6f 939static struct mutex tpacpi_inputdev_send_mutex;
b21a15f6 940static LIST_HEAD(tpacpi_all_drivers);
e295e850 941
3567a4e2 942#ifdef CONFIG_PM_SLEEP
4959a781 943static int tpacpi_suspend_handler(struct device *dev)
083f1760
HMH		 944{
945 struct ibm_struct *ibm, *itmp;
946
947 list_for_each_entry_safe(ibm, itmp,
948 &tpacpi_all_drivers,
949 all_drivers) {
950 if (ibm->suspend)
fd3c3a42 951 (ibm->suspend)();
083f1760
HMH		 952 }
953
954 return 0;
955}
956
4959a781 957static int tpacpi_resume_handler(struct device *dev)
e295e850
HMH		 958{
959 struct ibm_struct *ibm, *itmp;
960
961 list_for_each_entry_safe(ibm, itmp,
962 &tpacpi_all_drivers,
963 all_drivers) {
964 if (ibm->resume)
965 (ibm->resume)();
966 }
967
968 return 0;
969}
3567a4e2 970#endif
e295e850 971
4959a781
RW		 972static SIMPLE_DEV_PM_OPS(tpacpi_pm,
973 tpacpi_suspend_handler, tpacpi_resume_handler);
974
90d9d3c7
HMH		 975static void tpacpi_shutdown_handler(struct platform_device *pdev)
976{
977 struct ibm_struct *ibm, *itmp;
978
979 list_for_each_entry_safe(ibm, itmp,
980 &tpacpi_all_drivers,
981 all_drivers) {
982 if (ibm->shutdown)
983 (ibm->shutdown)();
984 }
985}
986
54ae1501
HMH		 987static struct platform_driver tpacpi_pdriver = {
988 .driver = {
e0c7dfe7 989 .name = TPACPI_DRVR_NAME,
4959a781 990 .pm = &tpacpi_pm,
54ae1501 991 },
90d9d3c7 992 .shutdown = tpacpi_shutdown_handler,
54ae1501
HMH		 993};
994
7fd40029
HMH		 995static struct platform_driver tpacpi_hwmon_pdriver = {
996 .driver = {
e0c7dfe7 997 .name = TPACPI_HWMON_DRVR_NAME,
7fd40029
HMH		 998 },
999};
54ae1501 1000
176750d6 1001/*************************************************************************
b21a15f6 1002 * sysfs support helpers
176750d6
HMH		 1003 */
1004
b21a15f6
HMH		 1005struct attribute_set {
1006 unsigned int members, max_members;
1007 struct attribute_group group;
176750d6
HMH		 1008};
1009
7252374a
HMH		 1010struct attribute_set_obj {
1011 struct attribute_set s;
1012 struct attribute *a;
1013} __attribute__((packed));
1014
1015static struct attribute_set *create_attr_set(unsigned int max_members,
35ff8b9f 1016 const char *name)
7252374a
HMH		 1017{
1018 struct attribute_set_obj *sobj;
1019
1020 if (max_members == 0)
1021 return NULL;
1022
1023 /* Allocates space for implicit NULL at the end too */
1024 sobj = kzalloc(sizeof(struct attribute_set_obj) +
1025 max_members * sizeof(struct attribute *),
1026 GFP_KERNEL);
1027 if (!sobj)
1028 return NULL;
1029 sobj->s.max_members = max_members;
1030 sobj->s.group.attrs = &sobj->a;
1031 sobj->s.group.name = name;
1032
1033 return &sobj->s;
1034}
1035
f74a27d4
HMH		 1036#define destroy_attr_set(_set) \
1037 kfree(_set);
1038
7252374a 1039/* not multi-threaded safe, use it in a single thread per set */
35ff8b9f 1040static int add_to_attr_set(struct attribute_set *s, struct attribute *attr)
7252374a
HMH		 1041{
1042 if (!s || !attr)
1043 return -EINVAL;
1044
1045 if (s->members >= s->max_members)
1046 return -ENOMEM;
1047
1048 s->group.attrs[s->members] = attr;
1049 s->members++;
1050
1051 return 0;
1052}
1053
35ff8b9f 1054static int add_many_to_attr_set(struct attribute_set *s,
7252374a
HMH		 1055 struct attribute **attr,
1056 unsigned int count)
1057{
1058 int i, res;
1059
1060 for (i = 0; i < count; i++) {
1061 res = add_to_attr_set(s, attr[i]);
1062 if (res)
1063 return res;
1064 }
1065
1066 return 0;
1067}
1068
35ff8b9f 1069static void delete_attr_set(struct attribute_set *s, struct kobject *kobj)
7252374a
HMH		 1070{
1071 sysfs_remove_group(kobj, &s->group);
1072 destroy_attr_set(s);
1073}
1074
f74a27d4
HMH		 1075#define register_attr_set_with_sysfs(_attr_set, _kobj) \
1076 sysfs_create_group(_kobj, &_attr_set->group)
1077
7252374a
HMH		 1078static int parse_strtoul(const char *buf,
1079 unsigned long max, unsigned long *value)
1080{
1081 char *endp;
1082
e7d2860b
AGR		 1083 *value = simple_strtoul(skip_spaces(buf), &endp, 0);
1084 endp = skip_spaces(endp);
7252374a
HMH		 1085 if (*endp || *value > max)
1086 return -EINVAL;
1087
1088 return 0;
1089}
1090
d64c81c4
HMH		 1091static void tpacpi_disable_brightness_delay(void)
1092{
1093 if (acpi_evalf(hkey_handle, NULL, "PWMS", "qvd", 0))
0978e012 1094 pr_notice("ACPI backlight control delay disabled\n");
d64c81c4
HMH		 1095}
1096
19d337df
JB		 1097static void printk_deprecated_attribute(const char * const what,
1098 const char * const details)
1099{
1100 tpacpi_log_usertask("deprecated sysfs attribute");
5cac62ac 1101 pr_warn("WARNING: sysfs attribute %s is deprecated and will be removed. %s\n",
19d337df
JB		 1102 what, details);
1103}
1104
1105/*************************************************************************
1106 * rfkill and radio control support helpers
1107 */
1108
1109/*
1110 * ThinkPad-ACPI firmware handling model:
1111 *
1112 * WLSW (master wireless switch) is event-driven, and is common to all
1113 * firmware-controlled radios. It cannot be controlled, just monitored,
1114 * as expected. It overrides all radio state in firmware
1115 *
1116 * The kernel, a masked-off hotkey, and WLSW can change the radio state
1117 * (TODO: verify how WLSW interacts with the returned radio state).
1118 *
1119 * The only time there are shadow radio state changes, is when
1120 * masked-off hotkeys are used.
1121 */
1122
1123/*
1124 * Internal driver API for radio state:
1125 *
1126 * int: < 0 = error, otherwise enum tpacpi_rfkill_state
1127 * bool: true means radio blocked (off)
1128 */
1129enum tpacpi_rfkill_state {
1130 TPACPI_RFK_RADIO_OFF = 0,
1131 TPACPI_RFK_RADIO_ON
1132};
1133
1134/* rfkill switches */
1135enum tpacpi_rfk_id {
1136 TPACPI_RFK_BLUETOOTH_SW_ID = 0,
1137 TPACPI_RFK_WWAN_SW_ID,
1138 TPACPI_RFK_UWB_SW_ID,
1139 TPACPI_RFK_SW_MAX
1140};
1141
1142static const char *tpacpi_rfkill_names[] = {
1143 [TPACPI_RFK_BLUETOOTH_SW_ID] = "bluetooth",
1144 [TPACPI_RFK_WWAN_SW_ID] = "wwan",
1145 [TPACPI_RFK_UWB_SW_ID] = "uwb",
1146 [TPACPI_RFK_SW_MAX] = NULL
1147};
1148
1149/* ThinkPad-ACPI rfkill subdriver */
1150struct tpacpi_rfk {
1151 struct rfkill *rfkill;
1152 enum tpacpi_rfk_id id;
1153 const struct tpacpi_rfk_ops *ops;
1154};
1155
1156struct tpacpi_rfk_ops {
1157 /* firmware interface */
1158 int (*get_status)(void);
1159 int (*set_status)(const enum tpacpi_rfkill_state);
1160};
1161
1162static struct tpacpi_rfk *tpacpi_rfkill_switches[TPACPI_RFK_SW_MAX];
1163
1164/* Query FW and update rfkill sw state for a given rfkill switch */
1165static int tpacpi_rfk_update_swstate(const struct tpacpi_rfk *tp_rfk)
1166{
1167 int status;
1168
1169 if (!tp_rfk)
1170 return -ENODEV;
1171
1172 status = (tp_rfk->ops->get_status)();
1173 if (status < 0)
1174 return status;
1175
1176 rfkill_set_sw_state(tp_rfk->rfkill,
1177 (status == TPACPI_RFK_RADIO_OFF));
1178
1179 return status;
1180}
1181
1182/* Query FW and update rfkill sw state for all rfkill switches */
1183static void tpacpi_rfk_update_swstate_all(void)
1184{
1185 unsigned int i;
1186
1187 for (i = 0; i < TPACPI_RFK_SW_MAX; i++)
1188 tpacpi_rfk_update_swstate(tpacpi_rfkill_switches[i]);
1189}
1190
1191/*
1192 * Sync the HW-blocking state of all rfkill switches,
1193 * do notice it causes the rfkill core to schedule uevents
1194 */
1195static void tpacpi_rfk_update_hwblock_state(bool blocked)
1196{
1197 unsigned int i;
1198 struct tpacpi_rfk *tp_rfk;
1199
1200 for (i = 0; i < TPACPI_RFK_SW_MAX; i++) {
1201 tp_rfk = tpacpi_rfkill_switches[i];
1202 if (tp_rfk) {
1203 if (rfkill_set_hw_state(tp_rfk->rfkill,
1204 blocked)) {
1205 /* ignore -- we track sw block */
1206 }
1207 }
1208 }
1209}
1210
1211/* Call to get the WLSW state from the firmware */
1212static int hotkey_get_wlsw(void);
1213
1214/* Call to query WLSW state and update all rfkill switches */
1215static bool tpacpi_rfk_check_hwblock_state(void)
1216{
1217 int res = hotkey_get_wlsw();
1218 int hw_blocked;
1219
1220 /* When unknown or unsupported, we have to assume it is unblocked */
1221 if (res < 0)
1222 return false;
1223
1224 hw_blocked = (res == TPACPI_RFK_RADIO_OFF);
1225 tpacpi_rfk_update_hwblock_state(hw_blocked);
1226
1227 return hw_blocked;
1228}
1229
1230static int tpacpi_rfk_hook_set_block(void *data, bool blocked)
1231{
1232 struct tpacpi_rfk *tp_rfk = data;
1233 int res;
1234
1235 dbg_printk(TPACPI_DBG_RFKILL,
1236 "request to change radio state to %s\n",
1237 blocked ? "blocked" : "unblocked");
1238
1239 /* try to set radio state */
1240 res = (tp_rfk->ops->set_status)(blocked ?
1241 TPACPI_RFK_RADIO_OFF : TPACPI_RFK_RADIO_ON);
1242
1243 /* and update the rfkill core with whatever the FW really did */
1244 tpacpi_rfk_update_swstate(tp_rfk);
1245
1246 return (res < 0) ? res : 0;
1247}
1248
1249static const struct rfkill_ops tpacpi_rfk_rfkill_ops = {
1250 .set_block = tpacpi_rfk_hook_set_block,
1251};
1252
1253static int __init tpacpi_new_rfkill(const enum tpacpi_rfk_id id,
1254 const struct tpacpi_rfk_ops *tp_rfkops,
0e74dc26
HMH		 1255 const enum rfkill_type rfktype,
1256 const char *name,
19d337df 1257 const bool set_default)
0e74dc26 1258{
19d337df 1259 struct tpacpi_rfk *atp_rfk;
0e74dc26 1260 int res;
06d5caf4 1261 bool sw_state = false;
5451a923 1262 bool hw_state;
06d5caf4 1263 int sw_status;
90d9d3c7 1264
19d337df
JB		 1265 BUG_ON(id >= TPACPI_RFK_SW_MAX || tpacpi_rfkill_switches[id]);
1266
19d337df
JB		 1267 atp_rfk = kzalloc(sizeof(struct tpacpi_rfk), GFP_KERNEL);
1268 if (atp_rfk)
1269 atp_rfk->rfkill = rfkill_alloc(name,
1270 &tpacpi_pdev->dev,
1271 rfktype,
1272 &tpacpi_rfk_rfkill_ops,
1273 atp_rfk);
1274 if (!atp_rfk || !atp_rfk->rfkill) {
0978e012 1275 pr_err("failed to allocate memory for rfkill class\n");
19d337df 1276 kfree(atp_rfk);
0e74dc26
HMH		 1277 return -ENOMEM;
1278 }
1279
19d337df
JB		 1280 atp_rfk->id = id;
1281 atp_rfk->ops = tp_rfkops;
0e74dc26 1282
06d5caf4
AJ		 1283 sw_status = (tp_rfkops->get_status)();
1284 if (sw_status < 0) {
0978e012
JP		 1285 pr_err("failed to read initial state for %s, error %d\n",
1286 name, sw_status);
b3fa1329 1287 } else {
06d5caf4 1288 sw_state = (sw_status == TPACPI_RFK_RADIO_OFF);
b3fa1329
AJ		 1289 if (set_default) {
1290 /* try to keep the initial state, since we ask the
1291 * firmware to preserve it across S5 in NVRAM */
06d5caf4 1292 rfkill_init_sw_state(atp_rfk->rfkill, sw_state);
b3fa1329
AJ		 1293 }
1294 }
5451a923
HMH		 1295 hw_state = tpacpi_rfk_check_hwblock_state();
1296 rfkill_set_hw_state(atp_rfk->rfkill, hw_state);
19d337df
JB		 1297
1298 res = rfkill_register(atp_rfk->rfkill);
0e74dc26 1299 if (res < 0) {
0978e012 1300 pr_err("failed to register %s rfkill switch: %d\n", name, res);
19d337df
JB		 1301 rfkill_destroy(atp_rfk->rfkill);
1302 kfree(atp_rfk);
0e74dc26
HMH		 1303 return res;
1304 }
1305
19d337df 1306 tpacpi_rfkill_switches[id] = atp_rfk;
5451a923 1307
0978e012 1308 pr_info("rfkill switch %s: radio is %sblocked\n",
5451a923 1309 name, (sw_state || hw_state) ? "" : "un");
0e74dc26
HMH		 1310 return 0;
1311}
1312
19d337df 1313static void tpacpi_destroy_rfkill(const enum tpacpi_rfk_id id)
73a94d86 1314{
19d337df
JB		 1315 struct tpacpi_rfk *tp_rfk;
1316
1317 BUG_ON(id >= TPACPI_RFK_SW_MAX);
1318
1319 tp_rfk = tpacpi_rfkill_switches[id];
1320 if (tp_rfk) {
1321 rfkill_unregister(tp_rfk->rfkill);
5f0dadb4 1322 rfkill_destroy(tp_rfk->rfkill);
19d337df
JB		 1323 tpacpi_rfkill_switches[id] = NULL;
1324 kfree(tp_rfk);
1325 }
73a94d86
HMH		 1326}
1327
1328static void printk_deprecated_rfkill_attribute(const char * const what)
1329{
1330 printk_deprecated_attribute(what,
1331 "Please switch to generic rfkill before year 2010");
1332}
1333
19d337df
JB		 1334/* sysfs <radio> enable ------------------------------------------------ */
1335static ssize_t tpacpi_rfk_sysfs_enable_show(const enum tpacpi_rfk_id id,
1336 struct device_attribute *attr,
1337 char *buf)
1338{
1339 int status;
1340
1341 printk_deprecated_rfkill_attribute(attr->attr.name);
1342
1343 /* This is in the ABI... */
1344 if (tpacpi_rfk_check_hwblock_state()) {
1345 status = TPACPI_RFK_RADIO_OFF;
1346 } else {
1347 status = tpacpi_rfk_update_swstate(tpacpi_rfkill_switches[id]);
1348 if (status < 0)
1349 return status;
1350 }
1351
1352 return snprintf(buf, PAGE_SIZE, "%d\n",
1353 (status == TPACPI_RFK_RADIO_ON) ? 1 : 0);
1354}
1355
1356static ssize_t tpacpi_rfk_sysfs_enable_store(const enum tpacpi_rfk_id id,
1357 struct device_attribute *attr,
1358 const char *buf, size_t count)
1359{
1360 unsigned long t;
1361 int res;
1362
1363 printk_deprecated_rfkill_attribute(attr->attr.name);
1364
1365 if (parse_strtoul(buf, 1, &t))
1366 return -EINVAL;
1367
1368 tpacpi_disclose_usertask(attr->attr.name, "set to %ld\n", t);
1369
1370 /* This is in the ABI... */
1371 if (tpacpi_rfk_check_hwblock_state() && !!t)
1372 return -EPERM;
1373
1374 res = tpacpi_rfkill_switches[id]->ops->set_status((!!t) ?
1375 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF);
1376 tpacpi_rfk_update_swstate(tpacpi_rfkill_switches[id]);
1377
1378 return (res < 0) ? res : count;
1379}
1380
1381/* procfs -------------------------------------------------------------- */
887965e6 1382static int tpacpi_rfk_procfs_read(const enum tpacpi_rfk_id id, struct seq_file *m)
19d337df 1383{
19d337df 1384 if (id >= TPACPI_RFK_SW_MAX)
887965e6 1385 seq_printf(m, "status:\t\tnot supported\n");
19d337df
JB		 1386 else {
1387 int status;
1388
1389 /* This is in the ABI... */
1390 if (tpacpi_rfk_check_hwblock_state()) {
1391 status = TPACPI_RFK_RADIO_OFF;
1392 } else {
1393 status = tpacpi_rfk_update_swstate(
1394 tpacpi_rfkill_switches[id]);
1395 if (status < 0)
1396 return status;
1397 }
1398
887965e6 1399 seq_printf(m, "status:\t\t%s\n",
19d337df
JB		 1400 (status == TPACPI_RFK_RADIO_ON) ?
1401 "enabled" : "disabled");
887965e6 1402 seq_printf(m, "commands:\tenable, disable\n");
19d337df
JB		 1403 }
1404
887965e6 1405 return 0;
19d337df
JB		 1406}
1407
1408static int tpacpi_rfk_procfs_write(const enum tpacpi_rfk_id id, char *buf)
1409{
1410 char *cmd;
1411 int status = -1;
1412 int res = 0;
1413
1414 if (id >= TPACPI_RFK_SW_MAX)
1415 return -ENODEV;
1416
1417 while ((cmd = next_cmd(&buf))) {
1418 if (strlencmp(cmd, "enable") == 0)
1419 status = TPACPI_RFK_RADIO_ON;
1420 else if (strlencmp(cmd, "disable") == 0)
1421 status = TPACPI_RFK_RADIO_OFF;
1422 else
1423 return -EINVAL;
1424 }
1425
1426 if (status != -1) {
1427 tpacpi_disclose_usertask("procfs", "attempt to %s %s\n",
1428 (status == TPACPI_RFK_RADIO_ON) ?
1429 "enable" : "disable",
1430 tpacpi_rfkill_names[id]);
1431 res = (tpacpi_rfkill_switches[id]->ops->set_status)(status);
1432 tpacpi_rfk_update_swstate(tpacpi_rfkill_switches[id]);
1433 }
1434
1435 return res;
1436}
1437
56b6aeb0 1438/*************************************************************************
b21a15f6 1439 * thinkpad-acpi driver attributes
56b6aeb0
HMH		 1440 */
1441
b21a15f6 1442/* interface_version --------------------------------------------------- */
ac3054c4 1443static ssize_t interface_version_show(struct device_driver *drv, char *buf)
1da177e4 1444{
b21a15f6
HMH		 1445 return snprintf(buf, PAGE_SIZE, "0x%08x\n", TPACPI_SYSFS_VERSION);
1446}
ac3054c4 1447static DRIVER_ATTR_RO(interface_version);
b21a15f6
HMH		 1448
1449/* debug_level --------------------------------------------------------- */
ac3054c4 1450static ssize_t debug_level_show(struct device_driver *drv, char *buf)
b21a15f6
HMH		 1451{
1452 return snprintf(buf, PAGE_SIZE, "0x%04x\n", dbg_level);
1453}
1454
ac3054c4
GKH		 1455static ssize_t debug_level_store(struct device_driver *drv, const char *buf,
1456 size_t count)
b21a15f6
HMH		 1457{
1458 unsigned long t;
1459
1460 if (parse_strtoul(buf, 0xffff, &t))
1461 return -EINVAL;
1462
1463 dbg_level = t;
1464
1465 return count;
1466}
ac3054c4 1467static DRIVER_ATTR_RW(debug_level);
b21a15f6
HMH		 1468
1469/* version ------------------------------------------------------------- */
ac3054c4 1470static ssize_t version_show(struct device_driver *drv, char *buf)
b21a15f6 1471{
35ff8b9f
HMH		 1472 return snprintf(buf, PAGE_SIZE, "%s v%s\n",
1473 TPACPI_DESC, TPACPI_VERSION);
b21a15f6 1474}
ac3054c4 1475static DRIVER_ATTR_RO(version);
b21a15f6
HMH		 1476
1477/* --------------------------------------------------------------------- */
1478
a73f3091
HMH		 1479#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
1480
a73f3091 1481/* wlsw_emulstate ------------------------------------------------------ */
ac3054c4 1482static ssize_t wlsw_emulstate_show(struct device_driver *drv, char *buf)
a73f3091
HMH		 1483{
1484 return snprintf(buf, PAGE_SIZE, "%d\n", !!tpacpi_wlsw_emulstate);
1485}
1486
ac3054c4
GKH		 1487static ssize_t wlsw_emulstate_store(struct device_driver *drv, const char *buf,
1488 size_t count)
a73f3091
HMH		 1489{
1490 unsigned long t;
1491
1492 if (parse_strtoul(buf, 1, &t))
1493 return -EINVAL;
1494
19d337df 1495 if (tpacpi_wlsw_emulstate != !!t) {
a73f3091 1496 tpacpi_wlsw_emulstate = !!t;
19d337df
JB		 1497 tpacpi_rfk_update_hwblock_state(!t); /* negative logic */
1498 }
a73f3091
HMH		 1499
1500 return count;
1501}
ac3054c4 1502static DRIVER_ATTR_RW(wlsw_emulstate);
a73f3091
HMH		 1503
1504/* bluetooth_emulstate ------------------------------------------------- */
ac3054c4 1505static ssize_t bluetooth_emulstate_show(struct device_driver *drv, char *buf)
a73f3091
HMH		 1506{
1507 return snprintf(buf, PAGE_SIZE, "%d\n", !!tpacpi_bluetooth_emulstate);
1508}
1509
ac3054c4
GKH		 1510static ssize_t bluetooth_emulstate_store(struct device_driver *drv,
1511 const char *buf, size_t count)
a73f3091
HMH		 1512{
1513 unsigned long t;
1514
1515 if (parse_strtoul(buf, 1, &t))
1516 return -EINVAL;
1517
1518 tpacpi_bluetooth_emulstate = !!t;
1519
1520 return count;
1521}
ac3054c4 1522static DRIVER_ATTR_RW(bluetooth_emulstate);
a73f3091
HMH		 1523
1524/* wwan_emulstate ------------------------------------------------- */
ac3054c4 1525static ssize_t wwan_emulstate_show(struct device_driver *drv, char *buf)
a73f3091
HMH		 1526{
1527 return snprintf(buf, PAGE_SIZE, "%d\n", !!tpacpi_wwan_emulstate);
1528}
1529
ac3054c4
GKH		 1530static ssize_t wwan_emulstate_store(struct device_driver *drv, const char *buf,
1531 size_t count)
a73f3091
HMH		 1532{
1533 unsigned long t;
1534
1535 if (parse_strtoul(buf, 1, &t))
1536 return -EINVAL;
1537
1538 tpacpi_wwan_emulstate = !!t;
1539
1540 return count;
1541}
ac3054c4 1542static DRIVER_ATTR_RW(wwan_emulstate);
a73f3091 1543
0045c0aa 1544/* uwb_emulstate ------------------------------------------------- */
ac3054c4 1545static ssize_t uwb_emulstate_show(struct device_driver *drv, char *buf)
0045c0aa
HMH		 1546{
1547 return snprintf(buf, PAGE_SIZE, "%d\n", !!tpacpi_uwb_emulstate);
1548}
1549
ac3054c4
GKH		 1550static ssize_t uwb_emulstate_store(struct device_driver *drv, const char *buf,
1551 size_t count)
0045c0aa
HMH		 1552{
1553 unsigned long t;
1554
1555 if (parse_strtoul(buf, 1, &t))
1556 return -EINVAL;
1557
1558 tpacpi_uwb_emulstate = !!t;
1559
1560 return count;
1561}
ac3054c4 1562static DRIVER_ATTR_RW(uwb_emulstate);
a73f3091
HMH		 1563#endif
1564
1565/* --------------------------------------------------------------------- */
1566
35ff8b9f 1567static struct driver_attribute *tpacpi_driver_attributes[] = {
b21a15f6
HMH		 1568 &driver_attr_debug_level, &driver_attr_version,
1569 &driver_attr_interface_version,
1570};
1571
1572static int __init tpacpi_create_driver_attributes(struct device_driver *drv)
1573{
1574 int i, res;
1575
1576 i = 0;
1577 res = 0;
1578 while (!res && i < ARRAY_SIZE(tpacpi_driver_attributes)) {
1579 res = driver_create_file(drv, tpacpi_driver_attributes[i]);
1580 i++;
1581 }
1582
a73f3091
HMH		 1583#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
1584 if (!res && dbg_wlswemul)
1585 res = driver_create_file(drv, &driver_attr_wlsw_emulstate);
1586 if (!res && dbg_bluetoothemul)
1587 res = driver_create_file(drv, &driver_attr_bluetooth_emulstate);
1588 if (!res && dbg_wwanemul)
1589 res = driver_create_file(drv, &driver_attr_wwan_emulstate);
0045c0aa
HMH		 1590 if (!res && dbg_uwbemul)
1591 res = driver_create_file(drv, &driver_attr_uwb_emulstate);
a73f3091
HMH		 1592#endif
1593
b21a15f6
HMH		 1594 return res;
1595}
1596
1597static void tpacpi_remove_driver_attributes(struct device_driver *drv)
1598{
1599 int i;
1600
35ff8b9f 1601 for (i = 0; i < ARRAY_SIZE(tpacpi_driver_attributes); i++)
b21a15f6 1602 driver_remove_file(drv, tpacpi_driver_attributes[i]);
a73f3091
HMH		 1603
1604#ifdef THINKPAD_ACPI_DEBUGFACILITIES
1605 driver_remove_file(drv, &driver_attr_wlsw_emulstate);
1606 driver_remove_file(drv, &driver_attr_bluetooth_emulstate);
1607 driver_remove_file(drv, &driver_attr_wwan_emulstate);
0045c0aa 1608 driver_remove_file(drv, &driver_attr_uwb_emulstate);
a73f3091 1609#endif
b21a15f6
HMH		 1610}
1611
600a99fa
HMH		 1612/*************************************************************************
1613 * Firmware Data
1614 */
1615
1616/*
1617 * Table of recommended minimum BIOS versions
1618 *
1619 * Reasons for listing:
9ddc5b6f 1620 * 1. Stable BIOS, listed because the unknown amount of
600a99fa
HMH		 1621 * bugs and bad ACPI behaviour on older versions
1622 *
1623 * 2. BIOS or EC fw with known bugs that trigger on Linux
1624 *
1625 * 3. BIOS with known reduced functionality in older versions
1626 *
1627 * We recommend the latest BIOS and EC version.
1628 * We only support the latest BIOS and EC fw version as a rule.
1629 *
1630 * Sources: IBM ThinkPad Public Web Documents (update changelogs),
1631 * Information from users in ThinkWiki
e675abaf
HMH		 1632 *
1633 * WARNING: we use this table also to detect that the machine is
1634 * a ThinkPad in some cases, so don't remove entries lightly.
600a99fa
HMH		 1635 */
1636
1637#define TPV_Q(__v, __id1, __id2, __bv1, __bv2) \
1638 { .vendor = (__v), \
1639 .bios = TPID(__id1, __id2), \
1640 .ec = TPACPI_MATCH_ANY, \
1641 .quirks = TPACPI_MATCH_ANY << 16 \
1642 | (__bv1) << 8 | (__bv2) }
1643
1644#define TPV_Q_X(__v, __bid1, __bid2, __bv1, __bv2, \
275014ae 1645 __eid, __ev1, __ev2) \
600a99fa
HMH		 1646 { .vendor = (__v), \
1647 .bios = TPID(__bid1, __bid2), \
275014ae 1648 .ec = __eid, \
600a99fa
HMH		 1649 .quirks = (__ev1) << 24 | (__ev2) << 16 \
1650 | (__bv1) << 8 | (__bv2) }
1651
1652#define TPV_QI0(__id1, __id2, __bv1, __bv2) \
1653 TPV_Q(PCI_VENDOR_ID_IBM, __id1, __id2, __bv1, __bv2)
1654
275014ae 1655/* Outdated IBM BIOSes often lack the EC id string */
600a99fa
HMH		 1656#define TPV_QI1(__id1, __id2, __bv1, __bv2, __ev1, __ev2) \
1657 TPV_Q_X(PCI_VENDOR_ID_IBM, __id1, __id2, \
275014ae
HMH		 1658 __bv1, __bv2, TPID(__id1, __id2), \
1659 __ev1, __ev2), \
1660 TPV_Q_X(PCI_VENDOR_ID_IBM, __id1, __id2, \
1661 __bv1, __bv2, TPACPI_MATCH_UNKNOWN, \
1662 __ev1, __ev2)
600a99fa 1663
275014ae 1664/* Outdated IBM BIOSes often lack the EC id string */
600a99fa
HMH		 1665#define TPV_QI2(__bid1, __bid2, __bv1, __bv2, \
1666 __eid1, __eid2, __ev1, __ev2) \
1667 TPV_Q_X(PCI_VENDOR_ID_IBM, __bid1, __bid2, \
275014ae
HMH		 1668 __bv1, __bv2, TPID(__eid1, __eid2), \
1669 __ev1, __ev2), \
1670 TPV_Q_X(PCI_VENDOR_ID_IBM, __bid1, __bid2, \
1671 __bv1, __bv2, TPACPI_MATCH_UNKNOWN, \
1672 __ev1, __ev2)
600a99fa
HMH		 1673
1674#define TPV_QL0(__id1, __id2, __bv1, __bv2) \
1675 TPV_Q(PCI_VENDOR_ID_LENOVO, __id1, __id2, __bv1, __bv2)
1676
1677#define TPV_QL1(__id1, __id2, __bv1, __bv2, __ev1, __ev2) \
1678 TPV_Q_X(PCI_VENDOR_ID_LENOVO, __id1, __id2, \
275014ae
HMH		 1679 __bv1, __bv2, TPID(__id1, __id2), \
1680 __ev1, __ev2)
600a99fa
HMH		 1681
1682#define TPV_QL2(__bid1, __bid2, __bv1, __bv2, \
1683 __eid1, __eid2, __ev1, __ev2) \
1684 TPV_Q_X(PCI_VENDOR_ID_LENOVO, __bid1, __bid2, \
275014ae
HMH		 1685 __bv1, __bv2, TPID(__eid1, __eid2), \
1686 __ev1, __ev2)
600a99fa
HMH		 1687
1688static const struct tpacpi_quirk tpacpi_bios_version_qtable[] __initconst = {
1689 /* Numeric models ------------------ */
1690 /* FW MODEL BIOS VERS */
1691 TPV_QI0('I', 'M', '6', '5'), /* 570 */
1692 TPV_QI0('I', 'U', '2', '6'), /* 570E */
1693 TPV_QI0('I', 'B', '5', '4'), /* 600 */
1694 TPV_QI0('I', 'H', '4', '7'), /* 600E */
1695 TPV_QI0('I', 'N', '3', '6'), /* 600E */
1696 TPV_QI0('I', 'T', '5', '5'), /* 600X */
1697 TPV_QI0('I', 'D', '4', '8'), /* 770, 770E, 770ED */
1698 TPV_QI0('I', 'I', '4', '2'), /* 770X */
1699 TPV_QI0('I', 'O', '2', '3'), /* 770Z */
1700
1701 /* A-series ------------------------- */
1702 /* FW MODEL BIOS VERS EC VERS */
1703 TPV_QI0('I', 'W', '5', '9'), /* A20m */
1704 TPV_QI0('I', 'V', '6', '9'), /* A20p */
1705 TPV_QI0('1', '0', '2', '6'), /* A21e, A22e */
1706 TPV_QI0('K', 'U', '3', '6'), /* A21e */
1707 TPV_QI0('K', 'X', '3', '6'), /* A21m, A22m */
1708 TPV_QI0('K', 'Y', '3', '8'), /* A21p, A22p */
1709 TPV_QI0('1', 'B', '1', '7'), /* A22e */
1710 TPV_QI0('1', '3', '2', '0'), /* A22m */
1711 TPV_QI0('1', 'E', '7', '3'), /* A30/p (0) */
1712 TPV_QI1('1', 'G', '4', '1', '1', '7'), /* A31/p (0) */
1713 TPV_QI1('1', 'N', '1', '6', '0', '7'), /* A31/p (0) */
1714
1715 /* G-series ------------------------- */
1716 /* FW MODEL BIOS VERS */
1717 TPV_QI0('1', 'T', 'A', '6'), /* G40 */
1718 TPV_QI0('1', 'X', '5', '7'), /* G41 */
1719
1720 /* R-series, T-series --------------- */
1721 /* FW MODEL BIOS VERS EC VERS */
1722 TPV_QI0('1', 'C', 'F', '0'), /* R30 */
1723 TPV_QI0('1', 'F', 'F', '1'), /* R31 */
1724 TPV_QI0('1', 'M', '9', '7'), /* R32 */
1725 TPV_QI0('1', 'O', '6', '1'), /* R40 */
1726 TPV_QI0('1', 'P', '6', '5'), /* R40 */
1727 TPV_QI0('1', 'S', '7', '0'), /* R40e */
1728 TPV_QI1('1', 'R', 'D', 'R', '7', '1'), /* R50/p, R51,
1729 T40/p, T41/p, T42/p (1) */
1730 TPV_QI1('1', 'V', '7', '1', '2', '8'), /* R50e, R51 (1) */
1731 TPV_QI1('7', '8', '7', '1', '0', '6'), /* R51e (1) */
1732 TPV_QI1('7', '6', '6', '9', '1', '6'), /* R52 (1) */
1733 TPV_QI1('7', '0', '6', '9', '2', '8'), /* R52, T43 (1) */
1734
1735 TPV_QI0('I', 'Y', '6', '1'), /* T20 */
1736 TPV_QI0('K', 'Z', '3', '4'), /* T21 */
1737 TPV_QI0('1', '6', '3', '2'), /* T22 */
1738 TPV_QI1('1', 'A', '6', '4', '2', '3'), /* T23 (0) */
1739 TPV_QI1('1', 'I', '7', '1', '2', '0'), /* T30 (0) */
1740 TPV_QI1('1', 'Y', '6', '5', '2', '9'), /* T43/p (1) */
1741
1742 TPV_QL1('7', '9', 'E', '3', '5', '0'), /* T60/p */
1743 TPV_QL1('7', 'C', 'D', '2', '2', '2'), /* R60, R60i */
90765c6a 1744 TPV_QL1('7', 'E', 'D', '0', '1', '5'), /* R60e, R60i */
600a99fa
HMH		 1745
1746 /* BIOS FW BIOS VERS EC FW EC VERS */
1747 TPV_QI2('1', 'W', '9', '0', '1', 'V', '2', '8'), /* R50e (1) */
1748 TPV_QL2('7', 'I', '3', '4', '7', '9', '5', '0'), /* T60/p wide */
1749
1750 /* X-series ------------------------- */
1751 /* FW MODEL BIOS VERS EC VERS */
1752 TPV_QI0('I', 'Z', '9', 'D'), /* X20, X21 */
1753 TPV_QI0('1', 'D', '7', '0'), /* X22, X23, X24 */
1754 TPV_QI1('1', 'K', '4', '8', '1', '8'), /* X30 (0) */
1755 TPV_QI1('1', 'Q', '9', '7', '2', '3'), /* X31, X32 (0) */
1756 TPV_QI1('1', 'U', 'D', '3', 'B', '2'), /* X40 (0) */
1757 TPV_QI1('7', '4', '6', '4', '2', '7'), /* X41 (0) */
1758 TPV_QI1('7', '5', '6', '0', '2', '0'), /* X41t (0) */
1759
90765c6a
HMH		 1760 TPV_QL1('7', 'B', 'D', '7', '4', '0'), /* X60/s */
1761 TPV_QL1('7', 'J', '3', '0', '1', '3'), /* X60t */
600a99fa
HMH		 1762
1763 /* (0) - older versions lack DMI EC fw string and functionality */
1764 /* (1) - older versions known to lack functionality */
1765};
1766
1767#undef TPV_QL1
1768#undef TPV_QL0
1769#undef TPV_QI2
1770#undef TPV_QI1
1771#undef TPV_QI0
1772#undef TPV_Q_X
1773#undef TPV_Q
1774
1775static void __init tpacpi_check_outdated_fw(void)
1776{
1777 unsigned long fwvers;
1778 u16 ec_version, bios_version;
1779
1780 fwvers = tpacpi_check_quirks(tpacpi_bios_version_qtable,
1781 ARRAY_SIZE(tpacpi_bios_version_qtable));
1782
1783 if (!fwvers)
1784 return;
1785
1786 bios_version = fwvers & 0xffffU;
1787 ec_version = (fwvers >> 16) & 0xffffU;
1788
1789 /* note that unknown versions are set to 0x0000 and we use that */
1790 if ((bios_version > thinkpad_id.bios_release) ||
1791 (ec_version > thinkpad_id.ec_release &&
1792 ec_version != TPACPI_MATCH_ANY)) {
1793 /*
1794 * The changelogs would let us track down the exact
1795 * reason, but it is just too much of a pain to track
1796 * it. We only list BIOSes that are either really
1797 * broken, or really stable to begin with, so it is
1798 * best if the user upgrades the firmware anyway.
1799 */
0978e012 1800 pr_warn("WARNING: Outdated ThinkPad BIOS/EC firmware\n");
5cac62ac 1801 pr_warn("WARNING: This firmware may be missing critical bug fixes and/or important features\n");
600a99fa
HMH		 1802 }
1803}
1804
e675abaf
HMH		 1805static bool __init tpacpi_is_fw_known(void)
1806{
1807 return tpacpi_check_quirks(tpacpi_bios_version_qtable,
1808 ARRAY_SIZE(tpacpi_bios_version_qtable)) != 0;
1809}
1810
b21a15f6
HMH		 1811/****************************************************************************
1812 ****************************************************************************
1813 *
1814 * Subdrivers
1815 *
1816 ****************************************************************************
1817 ****************************************************************************/
1818
1819/*************************************************************************
7a43f788 1820 * thinkpad-acpi metadata subdriver
b21a15f6
HMH		 1821 */
1822
887965e6 1823static int thinkpad_acpi_driver_read(struct seq_file *m)
1da177e4 1824{
887965e6
AD		 1825 seq_printf(m, "driver:\t\t%s\n", TPACPI_DESC);
1826 seq_printf(m, "version:\t%s\n", TPACPI_VERSION);
1827 return 0;
1da177e4
LT		 1828}
1829
a5763f22
HMH		 1830static struct ibm_struct thinkpad_acpi_driver_data = {
1831 .name = "driver",
1832 .read = thinkpad_acpi_driver_read,
1833};
1834
56b6aeb0
HMH		 1835/*************************************************************************
1836 * Hotkey subdriver
1837 */
1838
0d922e3b
HMH		 1839/*
1840 * ThinkPad firmware event model
1841 *
1842 * The ThinkPad firmware has two main event interfaces: normal ACPI
1843 * notifications (which follow the ACPI standard), and a private event
1844 * interface.
1845 *
1846 * The private event interface also issues events for the hotkeys. As
1847 * the driver gained features, the event handling code ended up being
1848 * built around the hotkey subdriver. This will need to be refactored
1849 * to a more formal event API eventually.
1850 *
1851 * Some "hotkeys" are actually supposed to be used as event reports,
1852 * such as "brightness has changed", "volume has changed", depending on
1853 * the ThinkPad model and how the firmware is operating.
1854 *
1855 * Unlike other classes, hotkey-class events have mask/unmask control on
1856 * non-ancient firmware. However, how it behaves changes a lot with the
1857 * firmware model and version.
1858 */
1859
f74a27d4
HMH		 1860enum { /* hot key scan codes (derived from ACPI DSDT) */
1861 TP_ACPI_HOTKEYSCAN_FNF1 = 0,
1862 TP_ACPI_HOTKEYSCAN_FNF2,
1863 TP_ACPI_HOTKEYSCAN_FNF3,
1864 TP_ACPI_HOTKEYSCAN_FNF4,
1865 TP_ACPI_HOTKEYSCAN_FNF5,
1866 TP_ACPI_HOTKEYSCAN_FNF6,
1867 TP_ACPI_HOTKEYSCAN_FNF7,
1868 TP_ACPI_HOTKEYSCAN_FNF8,
1869 TP_ACPI_HOTKEYSCAN_FNF9,
1870 TP_ACPI_HOTKEYSCAN_FNF10,
1871 TP_ACPI_HOTKEYSCAN_FNF11,
1872 TP_ACPI_HOTKEYSCAN_FNF12,
1873 TP_ACPI_HOTKEYSCAN_FNBACKSPACE,
1874 TP_ACPI_HOTKEYSCAN_FNINSERT,
1875 TP_ACPI_HOTKEYSCAN_FNDELETE,
1876 TP_ACPI_HOTKEYSCAN_FNHOME,
1877 TP_ACPI_HOTKEYSCAN_FNEND,
1878 TP_ACPI_HOTKEYSCAN_FNPAGEUP,
1879 TP_ACPI_HOTKEYSCAN_FNPAGEDOWN,
1880 TP_ACPI_HOTKEYSCAN_FNSPACE,
1881 TP_ACPI_HOTKEYSCAN_VOLUMEUP,
1882 TP_ACPI_HOTKEYSCAN_VOLUMEDOWN,
1883 TP_ACPI_HOTKEYSCAN_MUTE,
1884 TP_ACPI_HOTKEYSCAN_THINKPAD,
34a656d2
HMH		 1885 TP_ACPI_HOTKEYSCAN_UNK1,
1886 TP_ACPI_HOTKEYSCAN_UNK2,
1887 TP_ACPI_HOTKEYSCAN_UNK3,
1888 TP_ACPI_HOTKEYSCAN_UNK4,
1889 TP_ACPI_HOTKEYSCAN_UNK5,
1890 TP_ACPI_HOTKEYSCAN_UNK6,
1891 TP_ACPI_HOTKEYSCAN_UNK7,
1892 TP_ACPI_HOTKEYSCAN_UNK8,
1893
149c8c75
CK		 1894 /* Adaptive keyboard keycodes */
1895 TP_ACPI_HOTKEYSCAN_ADAPTIVE_START,
1896 TP_ACPI_HOTKEYSCAN_MUTE2 = TP_ACPI_HOTKEYSCAN_ADAPTIVE_START,
6a68d855
BN		 1897 TP_ACPI_HOTKEYSCAN_BRIGHTNESS_ZERO,
1898 TP_ACPI_HOTKEYSCAN_CLIPPING_TOOL,
1899 TP_ACPI_HOTKEYSCAN_CLOUD,
1900 TP_ACPI_HOTKEYSCAN_UNK9,
1901 TP_ACPI_HOTKEYSCAN_VOICE,
1902 TP_ACPI_HOTKEYSCAN_UNK10,
1903 TP_ACPI_HOTKEYSCAN_GESTURES,
1904 TP_ACPI_HOTKEYSCAN_UNK11,
1905 TP_ACPI_HOTKEYSCAN_UNK12,
1906 TP_ACPI_HOTKEYSCAN_UNK13,
1907 TP_ACPI_HOTKEYSCAN_CONFIG,
1908 TP_ACPI_HOTKEYSCAN_NEW_TAB,
1909 TP_ACPI_HOTKEYSCAN_RELOAD,
1910 TP_ACPI_HOTKEYSCAN_BACK,
1911 TP_ACPI_HOTKEYSCAN_MIC_DOWN,
1912 TP_ACPI_HOTKEYSCAN_MIC_UP,
1913 TP_ACPI_HOTKEYSCAN_MIC_CANCELLATION,
1914 TP_ACPI_HOTKEYSCAN_CAMERA_MODE,
1915 TP_ACPI_HOTKEYSCAN_ROTATE_DISPLAY,
1916
696c6523
CK		 1917 /* Lenovo extended keymap, starting at 0x1300 */
1918 TP_ACPI_HOTKEYSCAN_EXTENDED_START,
1919 /* first new observed key (star, favorites) is 0x1311 */
1920 TP_ACPI_HOTKEYSCAN_STAR = 69,
1921 TP_ACPI_HOTKEYSCAN_CLIPPING_TOOL2,
1922 TP_ACPI_HOTKEYSCAN_UNK25,
1923 TP_ACPI_HOTKEYSCAN_BLUETOOTH,
1924 TP_ACPI_HOTKEYSCAN_KEYBOARD,
1925
34a656d2
HMH		 1926 /* Hotkey keymap size */
1927 TPACPI_HOTKEY_MAP_LEN
f74a27d4
HMH		 1928};
1929
0d922e3b 1930enum { /* Keys/events available through NVRAM polling */
01e88f25
HMH		 1931 TPACPI_HKEY_NVRAM_KNOWN_MASK = 0x00fb88c0U,
1932 TPACPI_HKEY_NVRAM_GOOD_MASK = 0x00fb8000U,
1933};
1934
1935enum { /* Positions of some of the keys in hotkey masks */
1936 TP_ACPI_HKEY_DISPSWTCH_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNF7,
1937 TP_ACPI_HKEY_DISPXPAND_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNF8,
1938 TP_ACPI_HKEY_HIBERNATE_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNF12,
1939 TP_ACPI_HKEY_BRGHTUP_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNHOME,
1940 TP_ACPI_HKEY_BRGHTDWN_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNEND,
c685e20d 1941 TP_ACPI_HKEY_KBD_LIGHT_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNPAGEUP,
01e88f25
HMH		 1942 TP_ACPI_HKEY_ZOOM_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNSPACE,
1943 TP_ACPI_HKEY_VOLUP_MASK = 1 << TP_ACPI_HOTKEYSCAN_VOLUMEUP,
1944 TP_ACPI_HKEY_VOLDWN_MASK = 1 << TP_ACPI_HOTKEYSCAN_VOLUMEDOWN,
1945 TP_ACPI_HKEY_MUTE_MASK = 1 << TP_ACPI_HOTKEYSCAN_MUTE,
1946 TP_ACPI_HKEY_THINKPAD_MASK = 1 << TP_ACPI_HOTKEYSCAN_THINKPAD,
1947};
1948
1949enum { /* NVRAM to ACPI HKEY group map */
1950 TP_NVRAM_HKEY_GROUP_HK2 = TP_ACPI_HKEY_THINKPAD_MASK |
1951 TP_ACPI_HKEY_ZOOM_MASK |
1952 TP_ACPI_HKEY_DISPSWTCH_MASK |
1953 TP_ACPI_HKEY_HIBERNATE_MASK,
1954 TP_NVRAM_HKEY_GROUP_BRIGHTNESS = TP_ACPI_HKEY_BRGHTUP_MASK |
1955 TP_ACPI_HKEY_BRGHTDWN_MASK,
1956 TP_NVRAM_HKEY_GROUP_VOLUME = TP_ACPI_HKEY_VOLUP_MASK |
1957 TP_ACPI_HKEY_VOLDWN_MASK |
1958 TP_ACPI_HKEY_MUTE_MASK,
1959};
1960
1961#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
1962struct tp_nvram_state {
1963 u16 thinkpad_toggle:1;
1964 u16 zoom_toggle:1;
1965 u16 display_toggle:1;
1966 u16 thinklight_toggle:1;
1967 u16 hibernate_toggle:1;
1968 u16 displayexp_toggle:1;
1969 u16 display_state:1;
1970 u16 brightness_toggle:1;
1971 u16 volume_toggle:1;
1972 u16 mute:1;
1973
1974 u8 brightness_level;
1975 u8 volume_level;
1976};
1977
db25f16d 1978/* kthread for the hotkey poller */
01e88f25 1979static struct task_struct *tpacpi_hotkey_task;
db25f16d 1980
db25f16d 1981/*
0d922e3b
HMH		 1982 * Acquire mutex to write poller control variables as an
1983 * atomic block.
1984 *
1985 * Increment hotkey_config_change when changing them if you
1986 * want the kthread to forget old state.
db25f16d
HMH		 1987 *
1988 * See HOTKEY_CONFIG_CRITICAL_START/HOTKEY_CONFIG_CRITICAL_END
1989 */
01e88f25
HMH		 1990static struct mutex hotkey_thread_data_mutex;
1991static unsigned int hotkey_config_change;
1992
db25f16d
HMH		 1993/*
1994 * hotkey poller control variables
1995 *
1996 * Must be atomic or readers will also need to acquire mutex
0d922e3b
HMH		 1997 *
1998 * HOTKEY_CONFIG_CRITICAL_START/HOTKEY_CONFIG_CRITICAL_END
1999 * should be used only when the changes need to be taken as
2000 * a block, OR when one needs to force the kthread to forget
2001 * old state.
db25f16d
HMH		 2002 */
2003static u32 hotkey_source_mask; /* bit mask 0=ACPI,1=NVRAM */
2004static unsigned int hotkey_poll_freq = 10; /* Hz */
2005
2006#define HOTKEY_CONFIG_CRITICAL_START \
2007 do { \
2008 mutex_lock(&hotkey_thread_data_mutex); \
2009 hotkey_config_change++; \
2010 } while (0);
2011#define HOTKEY_CONFIG_CRITICAL_END \
2012 mutex_unlock(&hotkey_thread_data_mutex);
2013
01e88f25
HMH		 2014#else /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
2015
2016#define hotkey_source_mask 0U
db25f16d
HMH		 2017#define HOTKEY_CONFIG_CRITICAL_START
2018#define HOTKEY_CONFIG_CRITICAL_END
01e88f25
HMH		 2019
2020#endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
2021
f74a27d4
HMH		 2022static struct mutex hotkey_mutex;
2023
a713b4d7
HMH		 2024static enum { /* Reasons for waking up */
2025 TP_ACPI_WAKEUP_NONE = 0, /* None or unknown */
2026 TP_ACPI_WAKEUP_BAYEJ, /* Bay ejection request */
2027 TP_ACPI_WAKEUP_UNDOCK, /* Undock request */
2028} hotkey_wakeup_reason;
2029
2030static int hotkey_autosleep_ack;
2031
0d922e3b
HMH		 2032static u32 hotkey_orig_mask; /* events the BIOS had enabled */
2033static u32 hotkey_all_mask; /* all events supported in fw */
0118c2d3 2034static u32 hotkey_adaptive_all_mask; /* all adaptive events supported in fw */
0d922e3b
HMH		 2035static u32 hotkey_reserved_mask; /* events better left disabled */
2036static u32 hotkey_driver_mask; /* events needed by the driver */
2037static u32 hotkey_user_mask; /* events visible to userspace */
2038static u32 hotkey_acpi_mask; /* events enabled in firmware */
6a38abbf 2039
edf0e0e5 2040static u16 *hotkey_keycode_map;
78f81cc4 2041
94954cc6 2042static struct attribute_set *hotkey_dev_attributes;
a0416420 2043
8b468c0c
HMH		 2044static void tpacpi_driver_event(const unsigned int hkey_event);
2045static void hotkey_driver_event(const unsigned int scancode);
7f0cf712 2046static void hotkey_poll_setup(const bool may_warn);
8b468c0c 2047
6c231bd5
HMH		 2048/* HKEY.MHKG() return bits */
2049#define TP_HOTKEY_TABLET_MASK (1 << 3)
dda3ec0a
BB		 2050enum {
2051 TP_ACPI_MULTI_MODE_INVALID = 0,
2052 TP_ACPI_MULTI_MODE_UNKNOWN = 1 << 0,
2053 TP_ACPI_MULTI_MODE_LAPTOP = 1 << 1,
2054 TP_ACPI_MULTI_MODE_TABLET = 1 << 2,
2055 TP_ACPI_MULTI_MODE_FLAT = 1 << 3,
2056 TP_ACPI_MULTI_MODE_STAND = 1 << 4,
2057 TP_ACPI_MULTI_MODE_TENT = 1 << 5,
2058 TP_ACPI_MULTI_MODE_STAND_TENT = 1 << 6,
2059};
2060
2061enum {
2062 /* The following modes are considered tablet mode for the purpose of
2063 * reporting the status to userspace. i.e. in all these modes it makes
2064 * sense to disable the laptop input devices such as touchpad and
2065 * keyboard.
2066 */
2067 TP_ACPI_MULTI_MODE_TABLET_LIKE = TP_ACPI_MULTI_MODE_TABLET |
2068 TP_ACPI_MULTI_MODE_STAND |
2069 TP_ACPI_MULTI_MODE_TENT |
2070 TP_ACPI_MULTI_MODE_STAND_TENT,
2071};
6c231bd5 2072
19d337df 2073static int hotkey_get_wlsw(void)
74941a69 2074{
19d337df
JB		 2075 int status;
2076
2077 if (!tp_features.hotkey_wlsw)
2078 return -ENODEV;
2079
a73f3091 2080#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
19d337df
JB		 2081 if (dbg_wlswemul)
2082 return (tpacpi_wlsw_emulstate) ?
2083 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF;
a73f3091 2084#endif
19d337df
JB		 2085
2086 if (!acpi_evalf(hkey_handle, &status, "WLSW", "d"))
74941a69 2087 return -EIO;
19d337df
JB		 2088
2089 return (status) ? TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF;
74941a69
HMH		 2090}
2091
dda3ec0a
BB		 2092static int hotkey_gmms_get_tablet_mode(int s, int *has_tablet_mode)
2093{
2094 int type = (s >> 16) & 0xffff;
2095 int value = s & 0xffff;
2096 int mode = TP_ACPI_MULTI_MODE_INVALID;
2097 int valid_modes = 0;
2098
2099 if (has_tablet_mode)
2100 *has_tablet_mode = 0;
2101
2102 switch (type) {
2103 case 1:
2104 valid_modes = TP_ACPI_MULTI_MODE_LAPTOP |
2105 TP_ACPI_MULTI_MODE_TABLET |
2106 TP_ACPI_MULTI_MODE_STAND_TENT;
2107 break;
2108 case 2:
2109 valid_modes = TP_ACPI_MULTI_MODE_LAPTOP |
2110 TP_ACPI_MULTI_MODE_FLAT |
2111 TP_ACPI_MULTI_MODE_TABLET |
2112 TP_ACPI_MULTI_MODE_STAND |
2113 TP_ACPI_MULTI_MODE_TENT;
2114 break;
2115 case 3:
2116 valid_modes = TP_ACPI_MULTI_MODE_LAPTOP |
2117 TP_ACPI_MULTI_MODE_FLAT;
2118 break;
2119 case 4:
2120 valid_modes = TP_ACPI_MULTI_MODE_LAPTOP |
2121 TP_ACPI_MULTI_MODE_TABLET |
2122 TP_ACPI_MULTI_MODE_STAND |
2123 TP_ACPI_MULTI_MODE_TENT;
2124 break;
2125 case 5:
2126 valid_modes = TP_ACPI_MULTI_MODE_LAPTOP |
2127 TP_ACPI_MULTI_MODE_FLAT |
2128 TP_ACPI_MULTI_MODE_TABLET |
2129 TP_ACPI_MULTI_MODE_STAND |
2130 TP_ACPI_MULTI_MODE_TENT;
2131 break;
2132 default:
2133 pr_err("Unknown multi mode status type %d with value 0x%04X, please report this to %s\n",
2134 type, value, TPACPI_MAIL);
2135 return 0;
2136 }
2137
2138 if (has_tablet_mode && (valid_modes & TP_ACPI_MULTI_MODE_TABLET_LIKE))
2139 *has_tablet_mode = 1;
2140
2141 switch (value) {
2142 case 1:
2143 mode = TP_ACPI_MULTI_MODE_LAPTOP;
2144 break;
2145 case 2:
2146 mode = TP_ACPI_MULTI_MODE_FLAT;
2147 break;
2148 case 3:
2149 mode = TP_ACPI_MULTI_MODE_TABLET;
2150 break;
2151 case 4:
2152 if (type == 1)
2153 mode = TP_ACPI_MULTI_MODE_STAND_TENT;
2154 else
2155 mode = TP_ACPI_MULTI_MODE_STAND;
2156 break;
2157 case 5:
2158 mode = TP_ACPI_MULTI_MODE_TENT;
2159 break;
2160 default:
2161 if (type == 5 && value == 0xffff) {
2162 pr_warn("Multi mode status is undetected, assuming laptop\n");
2163 return 0;
2164 }
2165 }
2166
2167 if (!(mode & valid_modes)) {
2168 pr_err("Unknown/reserved multi mode value 0x%04X for type %d, please report this to %s\n",
2169 value, type, TPACPI_MAIL);
2170 return 0;
2171 }
2172
2173 return !!(mode & TP_ACPI_MULTI_MODE_TABLET_LIKE);
2174}
2175
6c231bd5
HMH		 2176static int hotkey_get_tablet_mode(int *status)
2177{
2178 int s;
2179
b03f4d49
L		 2180 switch (tp_features.hotkey_tablet) {
2181 case TP_HOTKEY_TABLET_USES_MHKG:
2182 if (!acpi_evalf(hkey_handle, &s, "MHKG", "d"))
2183 return -EIO;
2184
2185 *status = ((s & TP_HOTKEY_TABLET_MASK) != 0);
2186 break;
dda3ec0a
BB		 2187 case TP_HOTKEY_TABLET_USES_GMMS:
2188 if (!acpi_evalf(hkey_handle, &s, "GMMS", "dd", 0))
b03f4d49
L		 2189 return -EIO;
2190
dda3ec0a 2191 *status = hotkey_gmms_get_tablet_mode(s, NULL);
b03f4d49
L		 2192 break;
2193 default:
2194 break;
2195 }
6c231bd5 2196
cee47f5a 2197 return 0;
6c231bd5
HMH		 2198}
2199
b2c985e7 2200/*
0d922e3b
HMH		 2201 * Reads current event mask from firmware, and updates
2202 * hotkey_acpi_mask accordingly. Also resets any bits
2203 * from hotkey_user_mask that are unavailable to be
2204 * delivered (shadow requirement of the userspace ABI).
2205 *
b2c985e7
HMH		 2206 * Call with hotkey_mutex held
2207 */
2208static int hotkey_mask_get(void)
2209{
2210 if (tp_features.hotkey_mask) {
0d922e3b
HMH		 2211 u32 m = 0;
2212
01e88f25 2213 if (!acpi_evalf(hkey_handle, &m, "DHKN", "d"))
b2c985e7 2214 return -EIO;
0d922e3b
HMH		 2215
2216 hotkey_acpi_mask = m;
2217 } else {
2218 /* no mask support doesn't mean no event support... */
2219 hotkey_acpi_mask = hotkey_all_mask;
b2c985e7 2220 }
0d922e3b
HMH		 2221
2222 /* sync userspace-visible mask */
2223 hotkey_user_mask &= (hotkey_acpi_mask | hotkey_source_mask);
b2c985e7
HMH		 2224
2225 return 0;
2226}
2227
df6dd1b3 2228static void hotkey_mask_warn_incomplete_mask(void)
0d922e3b
HMH		 2229{
2230 /* log only what the user can fix... */
2231 const u32 wantedmask = hotkey_driver_mask &
2232 ~(hotkey_acpi_mask | hotkey_source_mask) &
2233 (hotkey_all_mask | TPACPI_HKEY_NVRAM_KNOWN_MASK);
2234
2235 if (wantedmask)
0978e012 2236 pr_notice("required events 0x%08x not enabled!\n", wantedmask);
0d922e3b
HMH		 2237}
2238
b2c985e7 2239/*
0d922e3b
HMH		 2240 * Set the firmware mask when supported
2241 *
2242 * Also calls hotkey_mask_get to update hotkey_acpi_mask.
2243 *
2244 * NOTE: does not set bits in hotkey_user_mask, but may reset them.
2245 *
b2c985e7
HMH		 2246 * Call with hotkey_mutex held
2247 */
2248static int hotkey_mask_set(u32 mask)
2249{
2250 int i;
2251 int rc = 0;
2252
0d922e3b 2253 const u32 fwmask = mask & ~hotkey_source_mask;
92889022 2254
0d922e3b 2255 if (tp_features.hotkey_mask) {
b2c985e7 2256 for (i = 0; i < 32; i++) {
b2c985e7
HMH		 2257 if (!acpi_evalf(hkey_handle,
2258 NULL, "MHKM", "vdd", i + 1,
0d922e3b 2259 !!(mask & (1 << i)))) {
b2c985e7
HMH		 2260 rc = -EIO;
2261 break;
b2c985e7
HMH		 2262 }
2263 }
0d922e3b 2264 }
b2c985e7 2265
0d922e3b
HMH		 2266 /*
2267 * We *must* make an inconditional call to hotkey_mask_get to
2268 * refresh hotkey_acpi_mask and update hotkey_user_mask
2269 *
2270 * Take the opportunity to also log when we cannot _enable_
2271 * a given event.
2272 */
2273 if (!hotkey_mask_get() && !rc && (fwmask & ~hotkey_acpi_mask)) {
5cac62ac 2274 pr_notice("asked for hotkey mask 0x%08x, but firmware forced it to 0x%08x\n",
0978e012 2275 fwmask, hotkey_acpi_mask);
b2c985e7
HMH		 2276 }
2277
6b30eb7d
HMH		 2278 if (tpacpi_lifecycle != TPACPI_LIFE_EXITING)
2279 hotkey_mask_warn_incomplete_mask();
0d922e3b
HMH		 2280
2281 return rc;
2282}
2283
2284/*
2285 * Sets hotkey_user_mask and tries to set the firmware mask
2286 *
2287 * Call with hotkey_mutex held
2288 */
2289static int hotkey_user_mask_set(const u32 mask)
2290{
2291 int rc;
2292
2293 /* Give people a chance to notice they are doing something that
2294 * is bound to go boom on their users sooner or later */
2295 if (!tp_warned.hotkey_mask_ff &&
2296 (mask == 0xffff || mask == 0xffffff ||
2297 mask == 0xffffffff)) {
2298 tp_warned.hotkey_mask_ff = 1;
5cac62ac
AS		 2299 pr_notice("setting the hotkey mask to 0x%08x is likely not the best way to go about it\n",
2300 mask);
2301 pr_notice("please consider using the driver defaults, and refer to up-to-date thinkpad-acpi documentation\n");
0d922e3b
HMH		 2302 }
2303
2304 /* Try to enable what the user asked for, plus whatever we need.
2305 * this syncs everything but won't enable bits in hotkey_user_mask */
2306 rc = hotkey_mask_set((mask | hotkey_driver_mask) & ~hotkey_source_mask);
2307
2308 /* Enable the available bits in hotkey_user_mask */
2309 hotkey_user_mask = mask & (hotkey_acpi_mask | hotkey_source_mask);
2310
b2c985e7
HMH		 2311 return rc;
2312}
2313
8b468c0c
HMH		 2314/*
2315 * Sets the driver hotkey mask.
2316 *
2317 * Can be called even if the hotkey subdriver is inactive
2318 */
2319static int tpacpi_hotkey_driver_mask_set(const u32 mask)
2320{
2321 int rc;
2322
2323 /* Do the right thing if hotkey_init has not been called yet */
2324 if (!tp_features.hotkey) {
2325 hotkey_driver_mask = mask;
2326 return 0;
2327 }
2328
2329 mutex_lock(&hotkey_mutex);
2330
2331 HOTKEY_CONFIG_CRITICAL_START
2332 hotkey_driver_mask = mask;
b684a363 2333#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
8b468c0c 2334 hotkey_source_mask |= (mask & ~hotkey_all_mask);
b684a363 2335#endif
8b468c0c
HMH		 2336 HOTKEY_CONFIG_CRITICAL_END
2337
2338 rc = hotkey_mask_set((hotkey_acpi_mask | hotkey_driver_mask) &
2339 ~hotkey_source_mask);
7f0cf712
HMH		 2340 hotkey_poll_setup(true);
2341
8b468c0c
HMH		 2342 mutex_unlock(&hotkey_mutex);
2343
2344 return rc;
2345}
2346
b2c985e7
HMH		 2347static int hotkey_status_get(int *status)
2348{
2349 if (!acpi_evalf(hkey_handle, status, "DHKC", "d"))
2350 return -EIO;
2351
2352 return 0;
2353}
2354
2586d566 2355static int hotkey_status_set(bool enable)
b2c985e7 2356{
2586d566 2357 if (!acpi_evalf(hkey_handle, NULL, "MHKC", "vd", enable ? 1 : 0))
b2c985e7
HMH		 2358 return -EIO;
2359
2360 return 0;
2361}
2362
6c231bd5 2363static void tpacpi_input_send_tabletsw(void)
b3ec6f91 2364{
6c231bd5 2365 int state;
b3ec6f91 2366
6c231bd5
HMH		 2367 if (tp_features.hotkey_tablet &&
2368 !hotkey_get_tablet_mode(&state)) {
2369 mutex_lock(&tpacpi_inputdev_send_mutex);
b3ec6f91 2370
6c231bd5
HMH		 2371 input_report_switch(tpacpi_inputdev,
2372 SW_TABLET_MODE, !!state);
2373 input_sync(tpacpi_inputdev);
2374
2375 mutex_unlock(&tpacpi_inputdev_send_mutex);
2376 }
b3ec6f91
HMH		 2377}
2378
0d922e3b
HMH		 2379/* Do NOT call without validating scancode first */
2380static void tpacpi_input_send_key(const unsigned int scancode)
b7c8c200 2381{
0d922e3b 2382 const unsigned int keycode = hotkey_keycode_map[scancode];
b7c8c200
HMH		 2383
2384 if (keycode != KEY_RESERVED) {
2385 mutex_lock(&tpacpi_inputdev_send_mutex);
2386
5ffba7e6 2387 input_event(tpacpi_inputdev, EV_MSC, MSC_SCAN, scancode);
b7c8c200 2388 input_report_key(tpacpi_inputdev, keycode, 1);
b7c8c200
HMH		 2389 input_sync(tpacpi_inputdev);
2390
5ffba7e6 2391 input_event(tpacpi_inputdev, EV_MSC, MSC_SCAN, scancode);
b7c8c200 2392 input_report_key(tpacpi_inputdev, keycode, 0);
b7c8c200
HMH		 2393 input_sync(tpacpi_inputdev);
2394
2395 mutex_unlock(&tpacpi_inputdev_send_mutex);
2396 }
2397}
2398
0d922e3b
HMH		 2399/* Do NOT call without validating scancode first */
2400static void tpacpi_input_send_key_masked(const unsigned int scancode)
2401{
8b468c0c 2402 hotkey_driver_event(scancode);
0d922e3b
HMH		 2403 if (hotkey_user_mask & (1 << scancode))
2404 tpacpi_input_send_key(scancode);
2405}
2406
01e88f25
HMH		 2407#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
2408static struct tp_acpi_drv_struct ibm_hotkey_acpidriver;
2409
0d922e3b 2410/* Do NOT call without validating scancode first */
01e88f25
HMH		 2411static void tpacpi_hotkey_send_key(unsigned int scancode)
2412{
0d922e3b 2413 tpacpi_input_send_key_masked(scancode);
01e88f25
HMH		 2414}
2415
0d922e3b 2416static void hotkey_read_nvram(struct tp_nvram_state *n, const u32 m)
01e88f25
HMH		 2417{
2418 u8 d;
2419
2420 if (m & TP_NVRAM_HKEY_GROUP_HK2) {
2421 d = nvram_read_byte(TP_NVRAM_ADDR_HK2);
2422 n->thinkpad_toggle = !!(d & TP_NVRAM_MASK_HKT_THINKPAD);
2423 n->zoom_toggle = !!(d & TP_NVRAM_MASK_HKT_ZOOM);
2424 n->display_toggle = !!(d & TP_NVRAM_MASK_HKT_DISPLAY);
2425 n->hibernate_toggle = !!(d & TP_NVRAM_MASK_HKT_HIBERNATE);
2426 }
c685e20d 2427 if (m & TP_ACPI_HKEY_KBD_LIGHT_MASK) {
01e88f25
HMH		 2428 d = nvram_read_byte(TP_NVRAM_ADDR_THINKLIGHT);
2429 n->thinklight_toggle = !!(d & TP_NVRAM_MASK_THINKLIGHT);
2430 }
2431 if (m & TP_ACPI_HKEY_DISPXPAND_MASK) {
2432 d = nvram_read_byte(TP_NVRAM_ADDR_VIDEO);
2433 n->displayexp_toggle =
2434 !!(d & TP_NVRAM_MASK_HKT_DISPEXPND);
2435 }
2436 if (m & TP_NVRAM_HKEY_GROUP_BRIGHTNESS) {
2437 d = nvram_read_byte(TP_NVRAM_ADDR_BRIGHTNESS);
2438 n->brightness_level = (d & TP_NVRAM_MASK_LEVEL_BRIGHTNESS)
2439 >> TP_NVRAM_POS_LEVEL_BRIGHTNESS;
2440 n->brightness_toggle =
2441 !!(d & TP_NVRAM_MASK_HKT_BRIGHTNESS);
2442 }
2443 if (m & TP_NVRAM_HKEY_GROUP_VOLUME) {
2444 d = nvram_read_byte(TP_NVRAM_ADDR_MIXER);
2445 n->volume_level = (d & TP_NVRAM_MASK_LEVEL_VOLUME)
2446 >> TP_NVRAM_POS_LEVEL_VOLUME;
2447 n->mute = !!(d & TP_NVRAM_MASK_MUTE);
2448 n->volume_toggle = !!(d & TP_NVRAM_MASK_HKT_VOLUME);
2449 }
2450}
2451
2452#define TPACPI_COMPARE_KEY(__scancode, __member) \
a4d44ba1
BW		 2453do { \
2454 if ((event_mask & (1 << __scancode)) && \
2455 oldn->__member != newn->__member) \
2456 tpacpi_hotkey_send_key(__scancode); \
2457} while (0)
01e88f25
HMH		 2458
2459#define TPACPI_MAY_SEND_KEY(__scancode) \
a4d44ba1
BW		 2460do { \
2461 if (event_mask & (1 << __scancode)) \
2462 tpacpi_hotkey_send_key(__scancode); \
2463} while (0)
2464
2465static void issue_volchange(const unsigned int oldvol,
2466 const unsigned int newvol,
2467 const u32 event_mask)
2468{
2469 unsigned int i = oldvol;
2470
2471 while (i > newvol) {
2472 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEDOWN);
2473 i--;
5d756db9 2474 }
a4d44ba1
BW		 2475 while (i < newvol) {
2476 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEUP);
2477 i++;
2478 }
2479}
5d756db9 2480
a4d44ba1
BW		 2481static void issue_brightnesschange(const unsigned int oldbrt,
2482 const unsigned int newbrt,
2483 const u32 event_mask)
2484{
2485 unsigned int i = oldbrt;
28999022 2486
a4d44ba1
BW		 2487 while (i > newbrt) {
2488 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNEND);
2489 i--;
28999022 2490 }
a4d44ba1
BW		 2491 while (i < newbrt) {
2492 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNHOME);
2493 i++;
2494 }
2495}
2496
2497static void hotkey_compare_and_issue_event(struct tp_nvram_state *oldn,
2498 struct tp_nvram_state *newn,
2499 const u32 event_mask)
2500{
28999022 2501
01e88f25
HMH		 2502 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_THINKPAD, thinkpad_toggle);
2503 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNSPACE, zoom_toggle);
2504 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNF7, display_toggle);
2505 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNF12, hibernate_toggle);
2506
2507 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNPAGEUP, thinklight_toggle);
2508
2509 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNF8, displayexp_toggle);
2510
5d756db9
HMH		 2511 /*
2512 * Handle volume
2513 *
2514 * This code is supposed to duplicate the IBM firmware behaviour:
2515 * - Pressing MUTE issues mute hotkey message, even when already mute
2516 * - Pressing Volume up/down issues volume up/down hotkey messages,
c8440336 2517 * even when already at maximum or minimum volume
5d756db9
HMH		 2518 * - The act of unmuting issues volume up/down notification,
2519 * depending which key was used to unmute
2520 *
2521 * We are constrained to what the NVRAM can tell us, which is not much
2522 * and certainly not enough if more than one volume hotkey was pressed
2523 * since the last poll cycle.
2524 *
2525 * Just to make our life interesting, some newer Lenovo ThinkPads have
2526 * bugs in the BIOS and may fail to update volume_toggle properly.
2527 */
2528 if (newn->mute) {
2529 /* muted */
2530 if (!oldn->mute ||
2531 oldn->volume_toggle != newn->volume_toggle ||
2532 oldn->volume_level != newn->volume_level) {
2533 /* recently muted, or repeated mute keypress, or
2534 * multiple presses ending in mute */
a4d44ba1
BW		 2535 issue_volchange(oldn->volume_level, newn->volume_level,
2536 event_mask);
01e88f25
HMH		 2537 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_MUTE);
2538 }
5d756db9
HMH		 2539 } else {
2540 /* unmute */
2541 if (oldn->mute) {
2542 /* recently unmuted, issue 'unmute' keypress */
01e88f25 2543 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEUP);
5d756db9
HMH		 2544 }
2545 if (oldn->volume_level != newn->volume_level) {
a4d44ba1
BW		 2546 issue_volchange(oldn->volume_level, newn->volume_level,
2547 event_mask);
5d756db9
HMH		 2548 } else if (oldn->volume_toggle != newn->volume_toggle) {
2549 /* repeated vol up/down keypress at end of scale ? */
2550 if (newn->volume_level == 0)
01e88f25 2551 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEDOWN);
5d756db9
HMH		 2552 else if (newn->volume_level >= TP_NVRAM_LEVEL_VOLUME_MAX)
2553 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEUP);
01e88f25
HMH		 2554 }
2555 }
2556
2557 /* handle brightness */
28999022
HMH		 2558 if (oldn->brightness_level != newn->brightness_level) {
2559 issue_brightnesschange(oldn->brightness_level,
a4d44ba1 2560 newn->brightness_level, event_mask);
28999022
HMH		 2561 } else if (oldn->brightness_toggle != newn->brightness_toggle) {
2562 /* repeated key presses that didn't change state */
2563 if (newn->brightness_level == 0)
01e88f25 2564 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNEND);
28999022
HMH		 2565 else if (newn->brightness_level >= bright_maxlvl
2566 && !tp_features.bright_unkfw)
2567 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNHOME);
01e88f25 2568 }
01e88f25
HMH		 2569
2570#undef TPACPI_COMPARE_KEY
2571#undef TPACPI_MAY_SEND_KEY
0d922e3b 2572}
01e88f25 2573
0d922e3b
HMH		 2574/*
2575 * Polling driver
2576 *
2577 * We track all events in hotkey_source_mask all the time, since
2578 * most of them are edge-based. We only issue those requested by
2579 * hotkey_user_mask or hotkey_driver_mask, though.
2580 */
01e88f25
HMH		 2581static int hotkey_kthread(void *data)
2582{
2583 struct tp_nvram_state s[2];
0d922e3b 2584 u32 poll_mask, event_mask;
01e88f25
HMH		 2585 unsigned int si, so;
2586 unsigned long t;
8a32c441 2587 unsigned int change_detector;
db25f16d 2588 unsigned int poll_freq;
8a32c441 2589 bool was_frozen;
01e88f25 2590
01e88f25
HMH		 2591 if (tpacpi_lifecycle == TPACPI_LIFE_EXITING)
2592 goto exit;
2593
2594 set_freezable();
2595
2596 so = 0;
2597 si = 1;
2598 t = 0;
2599
2600 /* Initial state for compares */
2601 mutex_lock(&hotkey_thread_data_mutex);
2602 change_detector = hotkey_config_change;
0d922e3b
HMH		 2603 poll_mask = hotkey_source_mask;
2604 event_mask = hotkey_source_mask &
2605 (hotkey_driver_mask | hotkey_user_mask);
db25f16d 2606 poll_freq = hotkey_poll_freq;
01e88f25 2607 mutex_unlock(&hotkey_thread_data_mutex);
0d922e3b 2608 hotkey_read_nvram(&s[so], poll_mask);
01e88f25 2609
db25f16d
HMH		 2610 while (!kthread_should_stop()) {
2611 if (t == 0) {
2612 if (likely(poll_freq))
2613 t = 1000/poll_freq;
2614 else
2615 t = 100; /* should never happen... */
2616 }
01e88f25 2617 t = msleep_interruptible(t);
8a32c441 2618 if (unlikely(kthread_freezable_should_stop(&was_frozen)))
01e88f25 2619 break;
8a32c441
TH		 2620
2621 if (t > 0 && !was_frozen)
01e88f25
HMH		 2622 continue;
2623
2624 mutex_lock(&hotkey_thread_data_mutex);
8a32c441 2625 if (was_frozen || hotkey_config_change != change_detector) {
01e88f25
HMH		 2626 /* forget old state on thaw or config change */
2627 si = so;
2628 t = 0;
2629 change_detector = hotkey_config_change;
2630 }
0d922e3b
HMH		 2631 poll_mask = hotkey_source_mask;
2632 event_mask = hotkey_source_mask &
2633 (hotkey_driver_mask | hotkey_user_mask);
db25f16d 2634 poll_freq = hotkey_poll_freq;
01e88f25
HMH		 2635 mutex_unlock(&hotkey_thread_data_mutex);
2636
0d922e3b
HMH		 2637 if (likely(poll_mask)) {
2638 hotkey_read_nvram(&s[si], poll_mask);
01e88f25
HMH		 2639 if (likely(si != so)) {
2640 hotkey_compare_and_issue_event(&s[so], &s[si],
0d922e3b 2641 event_mask);
01e88f25
HMH		 2642 }
2643 }
2644
2645 so = si;
2646 si ^= 1;
2647 }
2648
2649exit:
01e88f25
HMH		 2650 return 0;
2651}
2652
db25f16d 2653/* call with hotkey_mutex held */
01e88f25
HMH		 2654static void hotkey_poll_stop_sync(void)
2655{
2656 if (tpacpi_hotkey_task) {
01e88f25
HMH		 2657 kthread_stop(tpacpi_hotkey_task);
2658 tpacpi_hotkey_task = NULL;
01e88f25
HMH		 2659 }
2660}
2661
2662/* call with hotkey_mutex held */
7f0cf712 2663static void hotkey_poll_setup(const bool may_warn)
01e88f25 2664{
0d922e3b
HMH		 2665 const u32 poll_driver_mask = hotkey_driver_mask & hotkey_source_mask;
2666 const u32 poll_user_mask = hotkey_user_mask & hotkey_source_mask;
db25f16d 2667
0d922e3b
HMH		 2668 if (hotkey_poll_freq > 0 &&
2669 (poll_driver_mask ||
2670 (poll_user_mask && tpacpi_inputdev->users > 0))) {
01e88f25
HMH		 2671 if (!tpacpi_hotkey_task) {
2672 tpacpi_hotkey_task = kthread_run(hotkey_kthread,
95e57ab2 2673 NULL, TPACPI_NVRAM_KTHREAD_NAME);
01e88f25
HMH		 2674 if (IS_ERR(tpacpi_hotkey_task)) {
2675 tpacpi_hotkey_task = NULL;
5cac62ac 2676 pr_err("could not create kernel thread for hotkey polling\n");
01e88f25
HMH		 2677 }
2678 }
2679 } else {
2680 hotkey_poll_stop_sync();
0d922e3b 2681 if (may_warn && (poll_driver_mask || poll_user_mask) &&
db25f16d 2682 hotkey_poll_freq == 0) {
5cac62ac 2683 pr_notice("hot keys 0x%08x and/or events 0x%08x require polling, which is currently disabled\n",
0978e012 2684 poll_user_mask, poll_driver_mask);
01e88f25
HMH		 2685 }
2686 }
2687}
2688
7f0cf712 2689static void hotkey_poll_setup_safe(const bool may_warn)
01e88f25
HMH		 2690{
2691 mutex_lock(&hotkey_mutex);
2692 hotkey_poll_setup(may_warn);
2693 mutex_unlock(&hotkey_mutex);
2694}
2695
db25f16d
HMH		 2696/* call with hotkey_mutex held */
2697static void hotkey_poll_set_freq(unsigned int freq)
2698{
2699 if (!freq)
2700 hotkey_poll_stop_sync();
2701
db25f16d 2702 hotkey_poll_freq = freq;
db25f16d
HMH		 2703}
2704
1bc6b9cd
HMH		 2705#else /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
2706
7f0cf712
HMH		 2707static void hotkey_poll_setup(const bool __unused)
2708{
2709}
2710
2711static void hotkey_poll_setup_safe(const bool __unused)
1bc6b9cd
HMH		 2712{
2713}
2714
2715#endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
2716
01e88f25
HMH		 2717static int hotkey_inputdev_open(struct input_dev *dev)
2718{
2719 switch (tpacpi_lifecycle) {
2720 case TPACPI_LIFE_INIT:
01e88f25 2721 case TPACPI_LIFE_RUNNING:
db25f16d 2722 hotkey_poll_setup_safe(false);
01e88f25 2723 return 0;
b589ea4c
HMH		 2724 case TPACPI_LIFE_EXITING:
2725 return -EBUSY;
01e88f25
HMH		 2726 }
2727
2728 /* Should only happen if tpacpi_lifecycle is corrupt */
2729 BUG();
2730 return -EBUSY;
2731}
2732
2733static void hotkey_inputdev_close(struct input_dev *dev)
2734{
2735 /* disable hotkey polling when possible */
b589ea4c 2736 if (tpacpi_lifecycle != TPACPI_LIFE_EXITING &&
0d922e3b 2737 !(hotkey_source_mask & hotkey_driver_mask))
db25f16d 2738 hotkey_poll_setup_safe(false);
01e88f25 2739}
01e88f25 2740
a0416420
HMH		 2741/* sysfs hotkey enable ------------------------------------------------- */
2742static ssize_t hotkey_enable_show(struct device *dev,
2743 struct device_attribute *attr,
2744 char *buf)
2745{
ae92bd17 2746 int res, status;
a0416420 2747
2586d566
HMH		 2748 printk_deprecated_attribute("hotkey_enable",
2749 "Hotkey reporting is always enabled");
2750
b2c985e7 2751 res = hotkey_status_get(&status);
a0416420
HMH		 2752 if (res)
2753 return res;
2754
2755 return snprintf(buf, PAGE_SIZE, "%d\n", status);
2756}
2757
2758static ssize_t hotkey_enable_store(struct device *dev,
2759 struct device_attribute *attr,
2760 const char *buf, size_t count)
2761{
2762 unsigned long t;
2586d566
HMH		 2763
2764 printk_deprecated_attribute("hotkey_enable",
2765 "Hotkeys can be disabled through hotkey_mask");
a0416420
HMH		 2766
2767 if (parse_strtoul(buf, 1, &t))
2768 return -EINVAL;
2769
2586d566
HMH		 2770 if (t == 0)
2771 return -EPERM;
a0416420 2772
2586d566 2773 return count;
a0416420
HMH		 2774}
2775
b4dd04ac 2776static DEVICE_ATTR_RW(hotkey_enable);
a0416420
HMH		 2777
2778/* sysfs hotkey mask --------------------------------------------------- */
2779static ssize_t hotkey_mask_show(struct device *dev,
2780 struct device_attribute *attr,
2781 char *buf)
2782{
0d922e3b 2783 return snprintf(buf, PAGE_SIZE, "0x%08x\n", hotkey_user_mask);
a0416420
HMH		 2784}
2785
2786static ssize_t hotkey_mask_store(struct device *dev,
2787 struct device_attribute *attr,
2788 const char *buf, size_t count)
2789{
2790 unsigned long t;
b2c985e7 2791 int res;
a0416420 2792
ae92bd17 2793 if (parse_strtoul(buf, 0xffffffffUL, &t))
a0416420
HMH		 2794 return -EINVAL;
2795
7646ea88 2796 if (mutex_lock_killable(&hotkey_mutex))
b2c985e7
HMH		 2797 return -ERESTARTSYS;
2798
0d922e3b 2799 res = hotkey_user_mask_set(t);
01e88f25
HMH		 2800
2801#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
db25f16d 2802 hotkey_poll_setup(true);
01e88f25
HMH		 2803#endif
2804
b2c985e7 2805 mutex_unlock(&hotkey_mutex);
a0416420 2806
56e2c200
HMH		 2807 tpacpi_disclose_usertask("hotkey_mask", "set to 0x%08lx\n", t);
2808
a0416420
HMH		 2809 return (res) ? res : count;
2810}
2811
b4dd04ac 2812static DEVICE_ATTR_RW(hotkey_mask);
a0416420
HMH		 2813
2814/* sysfs hotkey bios_enabled ------------------------------------------- */
2815static ssize_t hotkey_bios_enabled_show(struct device *dev,
2816 struct device_attribute *attr,
2817 char *buf)
2818{
2586d566 2819 return sprintf(buf, "0\n");
a0416420
HMH		 2820}
2821
b4dd04ac 2822static DEVICE_ATTR_RO(hotkey_bios_enabled);
a0416420
HMH		 2823
2824/* sysfs hotkey bios_mask ---------------------------------------------- */
2825static ssize_t hotkey_bios_mask_show(struct device *dev,
2826 struct device_attribute *attr,
2827 char *buf)
2828{
06777be6
HMH		 2829 printk_deprecated_attribute("hotkey_bios_mask",
2830 "This attribute is useless.");
ae92bd17 2831 return snprintf(buf, PAGE_SIZE, "0x%08x\n", hotkey_orig_mask);
a0416420
HMH		 2832}
2833
b4dd04ac 2834static DEVICE_ATTR_RO(hotkey_bios_mask);
a0416420 2835
9b010de5
HMH		 2836/* sysfs hotkey all_mask ----------------------------------------------- */
2837static ssize_t hotkey_all_mask_show(struct device *dev,
2838 struct device_attribute *attr,
2839 char *buf)
2840{
01e88f25
HMH		 2841 return snprintf(buf, PAGE_SIZE, "0x%08x\n",
2842 hotkey_all_mask | hotkey_source_mask);
9b010de5
HMH		 2843}
2844
b4dd04ac 2845static DEVICE_ATTR_RO(hotkey_all_mask);
9b010de5 2846
0118c2d3
DW		 2847/* sysfs hotkey all_mask ----------------------------------------------- */
2848static ssize_t hotkey_adaptive_all_mask_show(struct device *dev,
2849 struct device_attribute *attr,
2850 char *buf)
2851{
2852 return snprintf(buf, PAGE_SIZE, "0x%08x\n",
2853 hotkey_adaptive_all_mask | hotkey_source_mask);
2854}
2855
2856static DEVICE_ATTR_RO(hotkey_adaptive_all_mask);
2857
9b010de5
HMH		 2858/* sysfs hotkey recommended_mask --------------------------------------- */
2859static ssize_t hotkey_recommended_mask_show(struct device *dev,
2860 struct device_attribute *attr,
2861 char *buf)
2862{
2863 return snprintf(buf, PAGE_SIZE, "0x%08x\n",
01e88f25
HMH		 2864 (hotkey_all_mask | hotkey_source_mask)
2865 & ~hotkey_reserved_mask);
9b010de5
HMH		 2866}
2867
b4dd04ac 2868static DEVICE_ATTR_RO(hotkey_recommended_mask);
9b010de5 2869
01e88f25
HMH		 2870#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
2871
2872/* sysfs hotkey hotkey_source_mask ------------------------------------- */
2873static ssize_t hotkey_source_mask_show(struct device *dev,
2874 struct device_attribute *attr,
2875 char *buf)
2876{
2877 return snprintf(buf, PAGE_SIZE, "0x%08x\n", hotkey_source_mask);
2878}
2879
2880static ssize_t hotkey_source_mask_store(struct device *dev,
2881 struct device_attribute *attr,
2882 const char *buf, size_t count)
2883{
2884 unsigned long t;
0d922e3b
HMH		 2885 u32 r_ev;
2886 int rc;
01e88f25
HMH		 2887
2888 if (parse_strtoul(buf, 0xffffffffUL, &t) ||
2889 ((t & ~TPACPI_HKEY_NVRAM_KNOWN_MASK) != 0))
2890 return -EINVAL;
2891
7646ea88 2892 if (mutex_lock_killable(&hotkey_mutex))
01e88f25
HMH		 2893 return -ERESTARTSYS;
2894
2895 HOTKEY_CONFIG_CRITICAL_START
2896 hotkey_source_mask = t;
2897 HOTKEY_CONFIG_CRITICAL_END
2898
0d922e3b
HMH		 2899 rc = hotkey_mask_set((hotkey_user_mask | hotkey_driver_mask) &
2900 ~hotkey_source_mask);
db25f16d 2901 hotkey_poll_setup(true);
0d922e3b
HMH		 2902
2903 /* check if events needed by the driver got disabled */
2904 r_ev = hotkey_driver_mask & ~(hotkey_acpi_mask & hotkey_all_mask)
2905 & ~hotkey_source_mask & TPACPI_HKEY_NVRAM_KNOWN_MASK;
01e88f25
HMH		 2906
2907 mutex_unlock(&hotkey_mutex);
2908
0d922e3b 2909 if (rc < 0)
5cac62ac 2910 pr_err("hotkey_source_mask: failed to update the firmware event mask!\n");
0d922e3b
HMH		 2911
2912 if (r_ev)
5cac62ac 2913 pr_notice("hotkey_source_mask: some important events were disabled: 0x%04x\n",
0978e012 2914 r_ev);
0d922e3b 2915
56e2c200
HMH		 2916 tpacpi_disclose_usertask("hotkey_source_mask", "set to 0x%08lx\n", t);
2917
0d922e3b 2918 return (rc < 0) ? rc : count;
01e88f25
HMH		 2919}
2920
b4dd04ac 2921static DEVICE_ATTR_RW(hotkey_source_mask);
01e88f25
HMH		 2922
2923/* sysfs hotkey hotkey_poll_freq --------------------------------------- */
2924static ssize_t hotkey_poll_freq_show(struct device *dev,
2925 struct device_attribute *attr,
2926 char *buf)
2927{
2928 return snprintf(buf, PAGE_SIZE, "%d\n", hotkey_poll_freq);
2929}
2930
2931static ssize_t hotkey_poll_freq_store(struct device *dev,
2932 struct device_attribute *attr,
2933 const char *buf, size_t count)
2934{
2935 unsigned long t;
2936
2937 if (parse_strtoul(buf, 25, &t))
2938 return -EINVAL;
2939
7646ea88 2940 if (mutex_lock_killable(&hotkey_mutex))
01e88f25
HMH		 2941 return -ERESTARTSYS;
2942
db25f16d
HMH		 2943 hotkey_poll_set_freq(t);
2944 hotkey_poll_setup(true);
01e88f25 2945
01e88f25
HMH		 2946 mutex_unlock(&hotkey_mutex);
2947
56e2c200
HMH		 2948 tpacpi_disclose_usertask("hotkey_poll_freq", "set to %lu\n", t);
2949
01e88f25
HMH		 2950 return count;
2951}
2952
b4dd04ac 2953static DEVICE_ATTR_RW(hotkey_poll_freq);
01e88f25
HMH		 2954
2955#endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
2956
50ebec09 2957/* sysfs hotkey radio_sw (pollable) ------------------------------------ */
74941a69
HMH		 2958static ssize_t hotkey_radio_sw_show(struct device *dev,
2959 struct device_attribute *attr,
2960 char *buf)
2961{
19d337df
JB		 2962 int res;
2963 res = hotkey_get_wlsw();
74941a69
HMH		 2964 if (res < 0)
2965 return res;
2966
19d337df
JB		 2967 /* Opportunistic update */
2968 tpacpi_rfk_update_hwblock_state((res == TPACPI_RFK_RADIO_OFF));
2969
2970 return snprintf(buf, PAGE_SIZE, "%d\n",
2971 (res == TPACPI_RFK_RADIO_OFF) ? 0 : 1);
74941a69
HMH		 2972}
2973
b4dd04ac 2974static DEVICE_ATTR_RO(hotkey_radio_sw);
74941a69 2975
50ebec09
HMH		 2976static void hotkey_radio_sw_notify_change(void)
2977{
2978 if (tp_features.hotkey_wlsw)
2979 sysfs_notify(&tpacpi_pdev->dev.kobj, NULL,
2980 "hotkey_radio_sw");
2981}
2982
6c231bd5
HMH		 2983/* sysfs hotkey tablet mode (pollable) --------------------------------- */
2984static ssize_t hotkey_tablet_mode_show(struct device *dev,
2985 struct device_attribute *attr,
2986 char *buf)
2987{
2988 int res, s;
2989 res = hotkey_get_tablet_mode(&s);
2990 if (res < 0)
2991 return res;
2992
2993 return snprintf(buf, PAGE_SIZE, "%d\n", !!s);
2994}
2995
b4dd04ac 2996static DEVICE_ATTR_RO(hotkey_tablet_mode);
6c231bd5
HMH		 2997
2998static void hotkey_tablet_mode_notify_change(void)
2999{
3000 if (tp_features.hotkey_tablet)
3001 sysfs_notify(&tpacpi_pdev->dev.kobj, NULL,
3002 "hotkey_tablet_mode");
3003}
3004
50ebec09 3005/* sysfs wakeup reason (pollable) -------------------------------------- */
a713b4d7
HMH		 3006static ssize_t hotkey_wakeup_reason_show(struct device *dev,
3007 struct device_attribute *attr,
3008 char *buf)
3009{
3010 return snprintf(buf, PAGE_SIZE, "%d\n", hotkey_wakeup_reason);
3011}
3012
5fb73bc2 3013static DEVICE_ATTR(wakeup_reason, S_IRUGO, hotkey_wakeup_reason_show, NULL);
a713b4d7 3014
1d5a2b54 3015static void hotkey_wakeup_reason_notify_change(void)
50ebec09 3016{
0d922e3b
HMH		 3017 sysfs_notify(&tpacpi_pdev->dev.kobj, NULL,
3018 "wakeup_reason");
50ebec09
HMH		 3019}
3020
3021/* sysfs wakeup hotunplug_complete (pollable) -------------------------- */
a713b4d7
HMH		 3022static ssize_t hotkey_wakeup_hotunplug_complete_show(struct device *dev,
3023 struct device_attribute *attr,
3024 char *buf)
3025{
3026 return snprintf(buf, PAGE_SIZE, "%d\n", hotkey_autosleep_ack);
3027}
3028
5fb73bc2
BM		 3029static DEVICE_ATTR(wakeup_hotunplug_complete, S_IRUGO,
3030 hotkey_wakeup_hotunplug_complete_show, NULL);
a713b4d7 3031
1d5a2b54 3032static void hotkey_wakeup_hotunplug_complete_notify_change(void)
50ebec09 3033{
0d922e3b
HMH		 3034 sysfs_notify(&tpacpi_pdev->dev.kobj, NULL,
3035 "wakeup_hotunplug_complete");
50ebec09
HMH		 3036}
3037
b790ceeb
BN		 3038/* sysfs adaptive kbd mode --------------------------------------------- */
3039
3040static int adaptive_keyboard_get_mode(void);
3041static int adaptive_keyboard_set_mode(int new_mode);
3042
3043enum ADAPTIVE_KEY_MODE {
3044 HOME_MODE,
3045 WEB_BROWSER_MODE,
3046 WEB_CONFERENCE_MODE,
3047 FUNCTION_MODE,
3048 LAYFLAT_MODE
3049};
3050
3051static ssize_t adaptive_kbd_mode_show(struct device *dev,
3052 struct device_attribute *attr,
3053 char *buf)
3054{
abf9dc0d 3055 int current_mode;
b790ceeb
BN		 3056
3057 current_mode = adaptive_keyboard_get_mode();
3058 if (current_mode < 0)
3059 return current_mode;
3060
3061 return snprintf(buf, PAGE_SIZE, "%d\n", current_mode);
3062}
3063
3064static ssize_t adaptive_kbd_mode_store(struct device *dev,
3065 struct device_attribute *attr,
3066 const char *buf, size_t count)
3067{
3068 unsigned long t;
3069 int res;
3070
3071 if (parse_strtoul(buf, LAYFLAT_MODE, &t))
3072 return -EINVAL;
3073
3074 res = adaptive_keyboard_set_mode(t);
3075 return (res < 0) ? res : count;
3076}
3077
3078static DEVICE_ATTR_RW(adaptive_kbd_mode);
3079
3080static struct attribute *adaptive_kbd_attributes[] = {
3081 &dev_attr_adaptive_kbd_mode.attr,
3082 NULL
3083};
3084
3085static const struct attribute_group adaptive_kbd_attr_group = {
3086 .attrs = adaptive_kbd_attributes,
3087};
3088
a0416420
HMH		 3089/* --------------------------------------------------------------------- */
3090
ff80f137
HMH		 3091static struct attribute *hotkey_attributes[] __initdata = {
3092 &dev_attr_hotkey_enable.attr,
01e88f25 3093 &dev_attr_hotkey_bios_enabled.attr,
0d922e3b 3094 &dev_attr_hotkey_bios_mask.attr,
5fb73bc2
BM		 3095 &dev_attr_wakeup_reason.attr,
3096 &dev_attr_wakeup_hotunplug_complete.attr,
01e88f25
HMH		 3097 &dev_attr_hotkey_mask.attr,
3098 &dev_attr_hotkey_all_mask.attr,
0118c2d3 3099 &dev_attr_hotkey_adaptive_all_mask.attr,
01e88f25 3100 &dev_attr_hotkey_recommended_mask.attr,
0d922e3b 3101#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
01e88f25
HMH		 3102 &dev_attr_hotkey_source_mask.attr,
3103 &dev_attr_hotkey_poll_freq.attr,
3104#endif
ff80f137
HMH		 3105};
3106
19d337df
JB		 3107/*
3108 * Sync both the hw and sw blocking state of all switches
3109 */
733e27c1
HMH		 3110static void tpacpi_send_radiosw_update(void)
3111{
3112 int wlsw;
3113
19d337df
JB		 3114 /*
3115 * We must sync all rfkill controllers *before* issuing any
3116 * rfkill input events, or we will race the rfkill core input
3117 * handler.
3118 *
c8440336 3119 * tpacpi_inputdev_send_mutex works as a synchronization point
19d337df
JB		 3120 * for the above.
3121 *
3122 * We optimize to avoid numerous calls to hotkey_get_wlsw.
3123 */
3124
3125 wlsw = hotkey_get_wlsw();
3126
3127 /* Sync hw blocking state first if it is hw-blocked */
3128 if (wlsw == TPACPI_RFK_RADIO_OFF)
3129 tpacpi_rfk_update_hwblock_state(true);
0e74dc26 3130
19d337df
JB		 3131 /* Sync sw blocking state */
3132 tpacpi_rfk_update_swstate_all();
3133
3134 /* Sync hw blocking state last if it is hw-unblocked */
3135 if (wlsw == TPACPI_RFK_RADIO_ON)
3136 tpacpi_rfk_update_hwblock_state(false);
3137
3138 /* Issue rfkill input event for WLSW switch */
3139 if (!(wlsw < 0)) {
733e27c1
HMH		 3140 mutex_lock(&tpacpi_inputdev_send_mutex);
3141
3142 input_report_switch(tpacpi_inputdev,
19d337df 3143 SW_RFKILL_ALL, (wlsw > 0));
733e27c1
HMH		 3144 input_sync(tpacpi_inputdev);
3145
3146 mutex_unlock(&tpacpi_inputdev_send_mutex);
3147 }
19d337df
JB		 3148
3149 /*
3150 * this can be unconditional, as we will poll state again
3151 * if userspace uses the notify to read data
3152 */
733e27c1
HMH		 3153 hotkey_radio_sw_notify_change();
3154}
3155
9c0a76e1
HMH		 3156static void hotkey_exit(void)
3157{
3158#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
db25f16d 3159 mutex_lock(&hotkey_mutex);
9c0a76e1 3160 hotkey_poll_stop_sync();
db25f16d 3161 mutex_unlock(&hotkey_mutex);
9c0a76e1
HMH		 3162#endif
3163
3164 if (hotkey_dev_attributes)
3165 delete_attr_set(hotkey_dev_attributes, &tpacpi_pdev->dev.kobj);
3166
4be73005 3167 dbg_printk(TPACPI_DBG_EXIT | TPACPI_DBG_HKEY,
0d922e3b
HMH		 3168 "restoring original HKEY status and mask\n");
3169 /* yes, there is a bitwise or below, we want the
3170 * functions to be called even if one of them fail */
3171 if (((tp_features.hotkey_mask &&
3172 hotkey_mask_set(hotkey_orig_mask)) |
3173 hotkey_status_set(false)) != 0)
5cac62ac 3174 pr_err("failed to restore hot key mask to BIOS defaults\n");
9c0a76e1
HMH		 3175}
3176
de4c8cc7
HMH		 3177static void __init hotkey_unmap(const unsigned int scancode)
3178{
3179 if (hotkey_keycode_map[scancode] != KEY_RESERVED) {
3180 clear_bit(hotkey_keycode_map[scancode],
3181 tpacpi_inputdev->keybit);
3182 hotkey_keycode_map[scancode] = KEY_RESERVED;
3183 }
3184}
3185
0d922e3b
HMH		 3186/*
3187 * HKEY quirks:
3188 * TPACPI_HK_Q_INIMASK: Supports FN+F3,FN+F4,FN+F12
3189 */
3190
3191#define TPACPI_HK_Q_INIMASK 0x0001
3192
3193static const struct tpacpi_quirk tpacpi_hotkey_qtable[] __initconst = {
3194 TPACPI_Q_IBM('I', 'H', TPACPI_HK_Q_INIMASK), /* 600E */
3195 TPACPI_Q_IBM('I', 'N', TPACPI_HK_Q_INIMASK), /* 600E */
3196 TPACPI_Q_IBM('I', 'D', TPACPI_HK_Q_INIMASK), /* 770, 770E, 770ED */
3197 TPACPI_Q_IBM('I', 'W', TPACPI_HK_Q_INIMASK), /* A20m */
3198 TPACPI_Q_IBM('I', 'V', TPACPI_HK_Q_INIMASK), /* A20p */
3199 TPACPI_Q_IBM('1', '0', TPACPI_HK_Q_INIMASK), /* A21e, A22e */
3200 TPACPI_Q_IBM('K', 'U', TPACPI_HK_Q_INIMASK), /* A21e */
3201 TPACPI_Q_IBM('K', 'X', TPACPI_HK_Q_INIMASK), /* A21m, A22m */
3202 TPACPI_Q_IBM('K', 'Y', TPACPI_HK_Q_INIMASK), /* A21p, A22p */
3203 TPACPI_Q_IBM('1', 'B', TPACPI_HK_Q_INIMASK), /* A22e */
3204 TPACPI_Q_IBM('1', '3', TPACPI_HK_Q_INIMASK), /* A22m */
3205 TPACPI_Q_IBM('1', 'E', TPACPI_HK_Q_INIMASK), /* A30/p (0) */
3206 TPACPI_Q_IBM('1', 'C', TPACPI_HK_Q_INIMASK), /* R30 */
3207 TPACPI_Q_IBM('1', 'F', TPACPI_HK_Q_INIMASK), /* R31 */
3208 TPACPI_Q_IBM('I', 'Y', TPACPI_HK_Q_INIMASK), /* T20 */
3209 TPACPI_Q_IBM('K', 'Z', TPACPI_HK_Q_INIMASK), /* T21 */
3210 TPACPI_Q_IBM('1', '6', TPACPI_HK_Q_INIMASK), /* T22 */
3211 TPACPI_Q_IBM('I', 'Z', TPACPI_HK_Q_INIMASK), /* X20, X21 */
3212 TPACPI_Q_IBM('1', 'D', TPACPI_HK_Q_INIMASK), /* X22, X23, X24 */
3213};
3214
fc6e7568
HMH		 3215typedef u16 tpacpi_keymap_entry_t;
3216typedef tpacpi_keymap_entry_t tpacpi_keymap_t[TPACPI_HOTKEY_MAP_LEN];
d1e14dca 3217
b3180028
L		 3218static int hotkey_init_tablet_mode(void)
3219{
cb2bf251
DH		 3220 int in_tablet_mode = 0, res;
3221 char *type = NULL;
b3180028 3222
dda3ec0a
BB		 3223 if (acpi_evalf(hkey_handle, &res, "GMMS", "qdd", 0)) {
3224 int has_tablet_mode;
3225
3226 in_tablet_mode = hotkey_gmms_get_tablet_mode(res,
3227 &has_tablet_mode);
3228 if (has_tablet_mode)
3229 tp_features.hotkey_tablet = TP_HOTKEY_TABLET_USES_GMMS;
3230 type = "GMMS";
3231 } else if (acpi_evalf(hkey_handle, &res, "MHKG", "qd")) {
b03f4d49 3232 /* For X41t, X60t, X61t Tablets... */
b3180028
L		 3233 tp_features.hotkey_tablet = TP_HOTKEY_TABLET_USES_MHKG;
3234 in_tablet_mode = !!(res & TP_HOTKEY_TABLET_MASK);
3235 type = "MHKG";
3236 }
3237
3238 if (!tp_features.hotkey_tablet)
3239 return 0;
3240
3241 pr_info("Tablet mode switch found (type: %s), currently in %s mode\n",
3242 type, in_tablet_mode ? "tablet" : "laptop");
3243
3244 res = add_to_attr_set(hotkey_dev_attributes,
3245 &dev_attr_hotkey_tablet_mode.attr);
3246 if (res)
3247 return -1;
3248
3249 return in_tablet_mode;
3250}
3251
a5763f22 3252static int __init hotkey_init(struct ibm_init_struct *iibm)
56b6aeb0 3253{
0f089147
HMH		 3254 /* Requirements for changing the default keymaps:
3255 *
3256 * 1. Many of the keys are mapped to KEY_RESERVED for very
3257 * good reasons. Do not change them unless you have deep
3258 * knowledge on the IBM and Lenovo ThinkPad firmware for
3259 * the various ThinkPad models. The driver behaves
3260 * differently for KEY_RESERVED: such keys have their
3261 * hot key mask *unset* in mask_recommended, and also
3262 * in the initial hot key mask programmed into the
3263 * firmware at driver load time, which means the firm-
3264 * ware may react very differently if you change them to
3265 * something else;
3266 *
3267 * 2. You must be subscribed to the linux-thinkpad and
3268 * ibm-acpi-devel mailing lists, and you should read the
3269 * list archives since 2007 if you want to change the
3270 * keymaps. This requirement exists so that you will
3271 * know the past history of problems with the thinkpad-
3272 * acpi driver keymaps, and also that you will be
3273 * listening to any bug reports;
3274 *
3275 * 3. Do not send thinkpad-acpi specific patches directly to
3276 * for merging, *ever*. Send them to the linux-acpi
3277 * mailinglist for comments. Merging is to be done only
3278 * through acpi-test and the ACPI maintainer.
3279 *
3280 * If the above is too much to ask, don't change the keymap.
3281 * Ask the thinkpad-acpi maintainer to do it, instead.
3282 */
d1e14dca
HMH		 3283
3284 enum keymap_index {
3285 TPACPI_KEYMAP_IBM_GENERIC = 0,
3286 TPACPI_KEYMAP_LENOVO_GENERIC,
3287 };
3288
3289 static const tpacpi_keymap_t tpacpi_keymaps[] __initconst = {
3290 /* Generic keymap for IBM ThinkPads */
3291 [TPACPI_KEYMAP_IBM_GENERIC] = {
edf0e0e5 3292 /* Scan Codes 0x00 to 0x0B: ACPI HKEY FN+F1..F12 */
d1e14dca 3293 KEY_FN_F1, KEY_BATTERY, KEY_COFFEE, KEY_SLEEP,
edf0e0e5
HMH		 3294 KEY_WLAN, KEY_FN_F6, KEY_SWITCHVIDEOMODE, KEY_FN_F8,
3295 KEY_FN_F9, KEY_FN_F10, KEY_FN_F11, KEY_SUSPEND,
0f089147
HMH		 3296
3297 /* Scan codes 0x0C to 0x1F: Other ACPI HKEY hot keys */
edf0e0e5
HMH		 3298 KEY_UNKNOWN, /* 0x0C: FN+BACKSPACE */
3299 KEY_UNKNOWN, /* 0x0D: FN+INSERT */
3300 KEY_UNKNOWN, /* 0x0E: FN+DELETE */
0f089147 3301
0d922e3b 3302 /* brightness: firmware always reacts to them */
e927c08d 3303 KEY_RESERVED, /* 0x0F: FN+HOME (brightness up) */
e927c08d 3304 KEY_RESERVED, /* 0x10: FN+END (brightness down) */
0f089147
HMH		 3305
3306 /* Thinklight: firmware always react to it */
edf0e0e5 3307 KEY_RESERVED, /* 0x11: FN+PGUP (thinklight toggle) */
0f089147 3308
edf0e0e5
HMH		 3309 KEY_UNKNOWN, /* 0x12: FN+PGDOWN */
3310 KEY_ZOOM, /* 0x13: FN+SPACE (zoom) */
0f089147
HMH		 3311
3312 /* Volume: firmware always react to it and reprograms
3313 * the built-in *extra* mixer. Never map it to control
3314 * another mixer by default. */
e927c08d
HMH		 3315 KEY_RESERVED, /* 0x14: VOLUME UP */
3316 KEY_RESERVED, /* 0x15: VOLUME DOWN */
3317 KEY_RESERVED, /* 0x16: MUTE */
0f089147 3318
edf0e0e5 3319 KEY_VENDOR, /* 0x17: Thinkpad/AccessIBM/Lenovo */
0f089147 3320
edf0e0e5
HMH		 3321 /* (assignments unknown, please report if found) */
3322 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN,
3323 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN,
6a68d855
BN		 3324
3325 /* No assignments, only used for Adaptive keyboards. */
3326 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN,
3327 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN,
3328 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN,
3329 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN,
3330 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN,
696c6523
CK		 3331
3332 /* No assignment, used for newer Lenovo models */
3333 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN,
3334 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN,
3335 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN,
3336 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN,
3337 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN,
3338 KEY_UNKNOWN, KEY_UNKNOWN
3339
d1e14dca
HMH		 3340 },
3341
3342 /* Generic keymap for Lenovo ThinkPads */
3343 [TPACPI_KEYMAP_LENOVO_GENERIC] = {
edf0e0e5
HMH		 3344 /* Scan Codes 0x00 to 0x0B: ACPI HKEY FN+F1..F12 */
3345 KEY_FN_F1, KEY_COFFEE, KEY_BATTERY, KEY_SLEEP,
2b754262 3346 KEY_WLAN, KEY_CAMERA, KEY_SWITCHVIDEOMODE, KEY_FN_F8,
edf0e0e5 3347 KEY_FN_F9, KEY_FN_F10, KEY_FN_F11, KEY_SUSPEND,
0f089147
HMH		 3348
3349 /* Scan codes 0x0C to 0x1F: Other ACPI HKEY hot keys */
edf0e0e5
HMH		 3350 KEY_UNKNOWN, /* 0x0C: FN+BACKSPACE */
3351 KEY_UNKNOWN, /* 0x0D: FN+INSERT */
3352 KEY_UNKNOWN, /* 0x0E: FN+DELETE */
0f089147 3353
de4c8cc7
HMH		 3354 /* These should be enabled --only-- when ACPI video
3355 * is disabled (i.e. in "vendor" mode), and are handled
3356 * in a special way by the init code */
3357 KEY_BRIGHTNESSUP, /* 0x0F: FN+HOME (brightness up) */
3358 KEY_BRIGHTNESSDOWN, /* 0x10: FN+END (brightness down) */
0f089147 3359
edf0e0e5 3360 KEY_RESERVED, /* 0x11: FN+PGUP (thinklight toggle) */
0f089147 3361
edf0e0e5
HMH		 3362 KEY_UNKNOWN, /* 0x12: FN+PGDOWN */
3363 KEY_ZOOM, /* 0x13: FN+SPACE (zoom) */
0f089147
HMH		 3364
3365 /* Volume: z60/z61, T60 (BIOS version?): firmware always
3366 * react to it and reprograms the built-in *extra* mixer.
3367 * Never map it to control another mixer by default.
3368 *
3369 * T60?, T61, R60?, R61: firmware and EC tries to send
3370 * these over the regular keyboard, so these are no-ops,
3371 * but there are still weird bugs re. MUTE, so do not
3372 * change unless you get test reports from all Lenovo
3373 * models. May cause the BIOS to interfere with the
3374 * HDA mixer.
3375 */
e927c08d
HMH		 3376 KEY_RESERVED, /* 0x14: VOLUME UP */
3377 KEY_RESERVED, /* 0x15: VOLUME DOWN */
3378 KEY_RESERVED, /* 0x16: MUTE */
0f089147 3379
edf0e0e5 3380 KEY_VENDOR, /* 0x17: Thinkpad/AccessIBM/Lenovo */
0f089147 3381
33009557
AL		 3382 /* (assignments unknown, please report if found) */
3383 KEY_UNKNOWN, KEY_UNKNOWN,
3384
3385 /*
3386 * The mic mute button only sends 0x1a. It does not
3387 * automatically mute the mic or change the mute light.
3388 */
3389 KEY_MICMUTE, /* 0x1a: Mic mute (since ?400 or so) */
3390
edf0e0e5 3391 /* (assignments unknown, please report if found) */
33009557 3392 KEY_UNKNOWN,
8b9dd4fa
HG		 3393
3394 /* Extra keys in use since the X240 / T440 / T540 */
4beb81d1 3395 KEY_CONFIG, KEY_SEARCH, KEY_SCALE, KEY_FILE,
6a68d855
BN		 3396
3397 /*
3398 * These are the adaptive keyboard keycodes for Carbon X1 2014.
3399 * The first item in this list is the Mute button which is
3400 * emitted with 0x103 through
3401 * adaptive_keyboard_hotkey_notify_hotkey() when the sound
3402 * symbol is held.
3403 * We'll need to offset those by 0x20.
3404 */
3405 KEY_RESERVED, /* Mute held, 0x103 */
3406 KEY_BRIGHTNESS_MIN, /* Backlight off */
3407 KEY_RESERVED, /* Clipping tool */
3408 KEY_RESERVED, /* Cloud */
3409 KEY_RESERVED,
3410 KEY_VOICECOMMAND, /* Voice */
3411 KEY_RESERVED,
3412 KEY_RESERVED, /* Gestures */
3413 KEY_RESERVED,
3414 KEY_RESERVED,
3415 KEY_RESERVED,
3416 KEY_CONFIG, /* Settings */
3417 KEY_RESERVED, /* New tab */
3418 KEY_REFRESH, /* Reload */
3419 KEY_BACK, /* Back */
3420 KEY_RESERVED, /* Microphone down */
3421 KEY_RESERVED, /* Microphone up */
3422 KEY_RESERVED, /* Microphone cancellation */
3423 KEY_RESERVED, /* Camera mode */
3424 KEY_RESERVED, /* Rotate display, 0x116 */
696c6523
CK		 3425
3426 /*
3427 * These are found in 2017 models (e.g. T470s, X270).
3428 * The lowest known value is 0x311, which according to
3429 * the manual should launch a user defined favorite
3430 * application.
3431 *
3432 * The offset for these is TP_ACPI_HOTKEYSCAN_EXTENDED_START,
3433 * corresponding to 0x34.
3434 */
3435
3436 /* (assignments unknown, please report if found) */
3437 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN,
3438 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN,
3439 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN,
3440 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN,
3441 KEY_UNKNOWN,
3442
3443 KEY_FAVORITES, /* Favorite app, 0x311 */
3444 KEY_RESERVED, /* Clipping tool */
3445 KEY_RESERVED,
3446 KEY_BLUETOOTH, /* Bluetooth */
3447 KEY_KEYBOARD /* Keyboard, 0x315 */
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 */
9c0a76e1
HMH		 3643 hotkey_keycode_map = kmalloc(TPACPI_HOTKEY_MAP_SIZE,
3644 GFP_KERNEL);
3645 if (!hotkey_keycode_map) {
0978e012 3646 pr_err("failed to allocate memory for key map\n");
9c0a76e1
HMH		 3647 res = -ENOMEM;
3648 goto err_exit;
3649 }
edf0e0e5 3650
d1e14dca
HMH		 3651 keymap_id = tpacpi_check_quirks(tpacpi_keymap_qtable,
3652 ARRAY_SIZE(tpacpi_keymap_qtable));
3653 BUG_ON(keymap_id >= ARRAY_SIZE(tpacpi_keymaps));
3654 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY,
3655 "using keymap number %lu\n", keymap_id);
3656
3657 memcpy(hotkey_keycode_map, &tpacpi_keymaps[keymap_id],
3658 TPACPI_HOTKEY_MAP_SIZE);
edf0e0e5 3659
792979c8 3660 input_set_capability(tpacpi_inputdev, EV_MSC, MSC_SCAN);
9c0a76e1
HMH		 3661 tpacpi_inputdev->keycodesize = TPACPI_HOTKEY_MAP_TYPESIZE;
3662 tpacpi_inputdev->keycodemax = TPACPI_HOTKEY_MAP_LEN;
3663 tpacpi_inputdev->keycode = hotkey_keycode_map;
3664 for (i = 0; i < TPACPI_HOTKEY_MAP_LEN; i++) {
3665 if (hotkey_keycode_map[i] != KEY_RESERVED) {
792979c8
HMH		 3666 input_set_capability(tpacpi_inputdev, EV_KEY,
3667 hotkey_keycode_map[i]);
9c0a76e1
HMH		 3668 } else {
3669 if (i < sizeof(hotkey_reserved_mask)*8)
3670 hotkey_reserved_mask |= 1 << i;
6a38abbf 3671 }
9c0a76e1 3672 }
6a38abbf 3673
9c0a76e1 3674 if (tp_features.hotkey_wlsw) {
792979c8 3675 input_set_capability(tpacpi_inputdev, EV_SW, SW_RFKILL_ALL);
d89a727a
HMH		 3676 input_report_switch(tpacpi_inputdev,
3677 SW_RFKILL_ALL, radiosw_state);
9c0a76e1
HMH		 3678 }
3679 if (tp_features.hotkey_tablet) {
792979c8 3680 input_set_capability(tpacpi_inputdev, EV_SW, SW_TABLET_MODE);
d89a727a
HMH		 3681 input_report_switch(tpacpi_inputdev,
3682 SW_TABLET_MODE, tabletsw_state);
9c0a76e1 3683 }
5c29d58f 3684
9c0a76e1 3685 /* Do not issue duplicate brightness change events to
77775838
HMH		 3686 * userspace. tpacpi_detect_brightness_capabilities() must have
3687 * been called before this point */
b33c6ce5 3688 if (acpi_video_get_backlight_type() != acpi_backlight_vendor) {
5cac62ac
AS		 3689 pr_info("This ThinkPad has standard ACPI backlight brightness control, supported by the ACPI video driver\n");
3690 pr_notice("Disabling thinkpad-acpi brightness events by default...\n");
9c0a76e1 3691
de4c8cc7
HMH		 3692 /* Disable brightness up/down on Lenovo thinkpads when
3693 * ACPI is handling them, otherwise it is plain impossible
3694 * for userspace to do something even remotely sane */
9c0a76e1
HMH		 3695 hotkey_reserved_mask |=
3696 (1 << TP_ACPI_HOTKEYSCAN_FNHOME)
3697 | (1 << TP_ACPI_HOTKEYSCAN_FNEND);
de4c8cc7
HMH		 3698 hotkey_unmap(TP_ACPI_HOTKEYSCAN_FNHOME);
3699 hotkey_unmap(TP_ACPI_HOTKEYSCAN_FNEND);
9c0a76e1 3700 }
ff80f137 3701
230d8cf2 3702#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
0d922e3b
HMH		 3703 hotkey_source_mask = TPACPI_HKEY_NVRAM_GOOD_MASK
3704 & ~hotkey_all_mask
3705 & ~hotkey_reserved_mask;
230d8cf2
HMH		 3706
3707 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY,
3708 "hotkey source mask 0x%08x, polling freq %u\n",
3709 hotkey_source_mask, hotkey_poll_freq);
3710#endif
3711
56e2c200
HMH		 3712 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY,
3713 "enabling firmware HKEY event interface...\n");
2586d566 3714 res = hotkey_status_set(true);
9c0a76e1
HMH		 3715 if (res) {
3716 hotkey_exit();
3717 return res;
3718 }
0d922e3b
HMH		 3719 res = hotkey_mask_set(((hotkey_all_mask & ~hotkey_reserved_mask)
3720 | hotkey_driver_mask)
3721 & ~hotkey_source_mask);
9c0a76e1
HMH		 3722 if (res < 0 && res != -ENXIO) {
3723 hotkey_exit();
3724 return res;
3725 }
0d922e3b
HMH		 3726 hotkey_user_mask = (hotkey_acpi_mask | hotkey_source_mask)
3727 & ~hotkey_reserved_mask;
3728 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY,
3729 "initial masks: user=0x%08x, fw=0x%08x, poll=0x%08x\n",
3730 hotkey_user_mask, hotkey_acpi_mask, hotkey_source_mask);
01e88f25 3731
9c0a76e1
HMH		 3732 tpacpi_inputdev->open = &hotkey_inputdev_open;
3733 tpacpi_inputdev->close = &hotkey_inputdev_close;
56b6aeb0 3734
db25f16d 3735 hotkey_poll_setup_safe(true);
56b6aeb0 3736
9c0a76e1 3737 return 0;
01e88f25 3738
9c0a76e1
HMH		 3739err_exit:
3740 delete_attr_set(hotkey_dev_attributes, &tpacpi_pdev->dev.kobj);
b790ceeb
BN		 3741 sysfs_remove_group(&tpacpi_pdev->dev.kobj,
3742 &adaptive_kbd_attr_group);
3743
9c0a76e1 3744 hotkey_dev_attributes = NULL;
a0416420 3745
72a979f0 3746 return (res < 0) ? res : 1;
56b6aeb0
HMH		 3747}
3748
3a9d20bd
SS		 3749/* Thinkpad X1 Carbon support 5 modes including Home mode, Web browser
3750 * mode, Web conference mode, Function mode and Lay-flat mode.
3751 * We support Home mode and Function mode currently.
3752 *
3753 * Will consider support rest of modes in future.
3754 *
3755 */
b201a47f 3756static const int adaptive_keyboard_modes[] = {
3a9d20bd
SS		 3757 HOME_MODE,
3758/* WEB_BROWSER_MODE = 2,
3759 WEB_CONFERENCE_MODE = 3, */
3760 FUNCTION_MODE
3761};
3762
3763#define DFR_CHANGE_ROW 0x101
3764#define DFR_SHOW_QUICKVIEW_ROW 0x102
6a68d855 3765#define FIRST_ADAPTIVE_KEY 0x103
3a9d20bd
SS		 3766
3767/* press Fn key a while second, it will switch to Function Mode. Then
3768 * release Fn key, previous mode be restored.
3769 */
3770static bool adaptive_keyboard_mode_is_saved;
3771static int adaptive_keyboard_prev_mode;
3772
f74587fb
BN		 3773static int adaptive_keyboard_get_mode(void)
3774{
3775 int mode = 0;
3776
3777 if (!acpi_evalf(hkey_handle, &mode, "GTRW", "dd", 0)) {
3778 pr_err("Cannot read adaptive keyboard mode\n");
3779 return -EIO;
3780 }
3781
3782 return mode;
3783}
3784
3785static int adaptive_keyboard_set_mode(int new_mode)
3786{
3787 if (new_mode < 0 ||
3788 new_mode > LAYFLAT_MODE)
3789 return -EINVAL;
3790
3791 if (!acpi_evalf(hkey_handle, NULL, "STRW", "vd", new_mode)) {
3792 pr_err("Cannot set adaptive keyboard mode\n");
3793 return -EIO;
3794 }
3795
3796 return 0;
3797}
3798
3a9d20bd
SS		 3799static int adaptive_keyboard_get_next_mode(int mode)
3800{
3801 size_t i;
3802 size_t max_mode = ARRAY_SIZE(adaptive_keyboard_modes) - 1;
3803
3804 for (i = 0; i <= max_mode; i++) {
3805 if (adaptive_keyboard_modes[i] == mode)
3806 break;
3807 }
3808
3809 if (i >= max_mode)
3810 i = 0;
3811 else
3812 i++;
3813
3814 return adaptive_keyboard_modes[i];
3815}
3816
3817static bool adaptive_keyboard_hotkey_notify_hotkey(unsigned int scancode)
3818{
abf9dc0d 3819 int current_mode = 0;
3a9d20bd 3820 int new_mode = 0;
6a68d855 3821 int keycode;
3a9d20bd
SS		 3822
3823 switch (scancode) {
3824 case DFR_CHANGE_ROW:
3825 if (adaptive_keyboard_mode_is_saved) {
3826 new_mode = adaptive_keyboard_prev_mode;
3827 adaptive_keyboard_mode_is_saved = false;
3828 } else {
f74587fb
BN		 3829 current_mode = adaptive_keyboard_get_mode();
3830 if (current_mode < 0)
3a9d20bd 3831 return false;
f74587fb
BN		 3832 new_mode = adaptive_keyboard_get_next_mode(
3833 current_mode);
3a9d20bd
SS		 3834 }
3835
f74587fb 3836 if (adaptive_keyboard_set_mode(new_mode) < 0)
3a9d20bd 3837 return false;
3a9d20bd
SS		 3838
3839 return true;
3840
3841 case DFR_SHOW_QUICKVIEW_ROW:
f74587fb
BN		 3842 current_mode = adaptive_keyboard_get_mode();
3843 if (current_mode < 0)
3a9d20bd 3844 return false;
3a9d20bd 3845
f74587fb
BN		 3846 adaptive_keyboard_prev_mode = current_mode;
3847 adaptive_keyboard_mode_is_saved = true;
3848
3849 if (adaptive_keyboard_set_mode (FUNCTION_MODE) < 0)
3850 return false;
3a9d20bd
SS		 3851 return true;
3852
3853 default:
741d98c7 3854 if (scancode < FIRST_ADAPTIVE_KEY ||
696c6523
CK		 3855 scancode >= FIRST_ADAPTIVE_KEY +
3856 TP_ACPI_HOTKEYSCAN_EXTENDED_START -
3857 TP_ACPI_HOTKEYSCAN_ADAPTIVE_START) {
6a68d855 3858 pr_info("Unhandled adaptive keyboard key: 0x%x\n",
5cac62ac 3859 scancode);
6a68d855
BN		 3860 return false;
3861 }
149c8c75
CK		 3862 keycode = hotkey_keycode_map[scancode - FIRST_ADAPTIVE_KEY +
3863 TP_ACPI_HOTKEYSCAN_ADAPTIVE_START];
6a68d855
BN		 3864 if (keycode != KEY_RESERVED) {
3865 mutex_lock(&tpacpi_inputdev_send_mutex);
3866
3867 input_report_key(tpacpi_inputdev, keycode, 1);
3868 input_sync(tpacpi_inputdev);
3869
3870 input_report_key(tpacpi_inputdev, keycode, 0);
3871 input_sync(tpacpi_inputdev);
3872
3873 mutex_unlock(&tpacpi_inputdev_send_mutex);
3874 }
3875 return true;
3a9d20bd
SS		 3876 }
3877}
3878
3827e7a3
HMH		 3879static bool hotkey_notify_hotkey(const u32 hkey,
3880 bool *send_acpi_ev,
3881 bool *ignore_acpi_ev)
3882{
3883 /* 0x1000-0x1FFF: key presses */
3884 unsigned int scancode = hkey & 0xfff;
3885 *send_acpi_ev = true;
3886 *ignore_acpi_ev = false;
3887
696c6523
CK		 3888 /*
3889 * Original events are in the 0x10XX range, the adaptive keyboard
3890 * found in 2014 X1 Carbon emits events are of 0x11XX. In 2017
3891 * models, additional keys are emitted through 0x13XX.
3892 */
3893 switch ((hkey >> 8) & 0xf) {
3894 case 0:
3895 if (scancode > 0 &&
3896 scancode <= TP_ACPI_HOTKEYSCAN_ADAPTIVE_START) {
3897 /* HKEY event 0x1001 is scancode 0x00 */
3898 scancode--;
3899 if (!(hotkey_source_mask & (1 << scancode))) {
3900 tpacpi_input_send_key_masked(scancode);
3901 *send_acpi_ev = false;
3902 } else {
3903 *ignore_acpi_ev = true;
3904 }
3905 return true;
3827e7a3 3906 }
696c6523
CK		 3907 break;
3908
3909 case 1:
3a9d20bd 3910 return adaptive_keyboard_hotkey_notify_hotkey(scancode);
696c6523
CK		 3911
3912 case 3:
3913 /* Extended keycodes start at 0x300 and our offset into the map
3914 * TP_ACPI_HOTKEYSCAN_EXTENDED_START. The calculated scancode
3915 * will be positive, but might not be in the correct range.
3916 */
3917 scancode -= (0x300 - TP_ACPI_HOTKEYSCAN_EXTENDED_START);
3918 if (scancode >= TP_ACPI_HOTKEYSCAN_EXTENDED_START &&
3919 scancode < TPACPI_HOTKEY_MAP_LEN) {
3920 tpacpi_input_send_key(scancode);
3921 return true;
3922 }
3923 break;
3827e7a3 3924 }
696c6523 3925
3827e7a3
HMH		 3926 return false;
3927}
3928
3929static bool hotkey_notify_wakeup(const u32 hkey,
3930 bool *send_acpi_ev,
3931 bool *ignore_acpi_ev)
3932{
3933 /* 0x2000-0x2FFF: Wakeup reason */
3934 *send_acpi_ev = true;
3935 *ignore_acpi_ev = false;
3936
3937 switch (hkey) {
67bcae6e
HMH		 3938 case TP_HKEY_EV_WKUP_S3_UNDOCK: /* suspend, undock */
3939 case TP_HKEY_EV_WKUP_S4_UNDOCK: /* hibernation, undock */
3827e7a3
HMH		 3940 hotkey_wakeup_reason = TP_ACPI_WAKEUP_UNDOCK;
3941 *ignore_acpi_ev = true;
3942 break;
3943
67bcae6e
HMH		 3944 case TP_HKEY_EV_WKUP_S3_BAYEJ: /* suspend, bay eject */
3945 case TP_HKEY_EV_WKUP_S4_BAYEJ: /* hibernation, bay eject */
3827e7a3
HMH		 3946 hotkey_wakeup_reason = TP_ACPI_WAKEUP_BAYEJ;
3947 *ignore_acpi_ev = true;
3948 break;
3949
67bcae6e
HMH		 3950 case TP_HKEY_EV_WKUP_S3_BATLOW: /* Battery on critical low level/S3 */
3951 case TP_HKEY_EV_WKUP_S4_BATLOW: /* Battery on critical low level/S4 */
0978e012 3952 pr_alert("EMERGENCY WAKEUP: battery almost empty\n");
106b4e66
HMH		 3953 /* how to auto-heal: */
3954 /* 2313: woke up from S3, go to S4/S5 */
3955 /* 2413: woke up from S4, go to S5 */
3956 break;
3957
3827e7a3
HMH		 3958 default:
3959 return false;
3960 }
3961
3962 if (hotkey_wakeup_reason != TP_ACPI_WAKEUP_NONE) {
0978e012 3963 pr_info("woke up due to a hot-unplug request...\n");
3827e7a3
HMH		 3964 hotkey_wakeup_reason_notify_change();
3965 }
3966 return true;
3967}
3968
a50245af
HMH		 3969static bool hotkey_notify_dockevent(const u32 hkey,
3970 bool *send_acpi_ev,
3971 bool *ignore_acpi_ev)
3972{
3973 /* 0x4000-0x4FFF: dock-related events */
3974 *send_acpi_ev = true;
3975 *ignore_acpi_ev = false;
3976
3977 switch (hkey) {
3978 case TP_HKEY_EV_UNDOCK_ACK:
3979 /* ACPI undock operation completed after wakeup */
3980 hotkey_autosleep_ack = 1;
3981 pr_info("undocked\n");
3982 hotkey_wakeup_hotunplug_complete_notify_change();
3983 return true;
3984
3985 case TP_HKEY_EV_HOTPLUG_DOCK: /* docked to port replicator */
3986 pr_info("docked into hotplug port replicator\n");
3987 return true;
3988 case TP_HKEY_EV_HOTPLUG_UNDOCK: /* undocked from port replicator */
3989 pr_info("undocked from hotplug port replicator\n");
3990 return true;
3991
3992 default:
3993 return false;
3994 }
3995}
3996
3827e7a3
HMH		 3997static bool hotkey_notify_usrevent(const u32 hkey,
3998 bool *send_acpi_ev,
3999 bool *ignore_acpi_ev)
4000{
4001 /* 0x5000-0x5FFF: human interface helpers */
4002 *send_acpi_ev = true;
4003 *ignore_acpi_ev = false;
4004
4005 switch (hkey) {
67bcae6e
HMH		 4006 case TP_HKEY_EV_PEN_INSERTED: /* X61t: tablet pen inserted into bay */
4007 case TP_HKEY_EV_PEN_REMOVED: /* X61t: tablet pen removed from bay */
3827e7a3
HMH		 4008 return true;
4009
67bcae6e
HMH		 4010 case TP_HKEY_EV_TABLET_TABLET: /* X41t-X61t: tablet mode */
4011 case TP_HKEY_EV_TABLET_NOTEBOOK: /* X41t-X61t: normal mode */
3827e7a3
HMH		 4012 tpacpi_input_send_tabletsw();
4013 hotkey_tablet_mode_notify_change();
4014 *send_acpi_ev = false;
4015 return true;
4016
67bcae6e
HMH		 4017 case TP_HKEY_EV_LID_CLOSE: /* Lid closed */
4018 case TP_HKEY_EV_LID_OPEN: /* Lid opened */
4019 case TP_HKEY_EV_BRGHT_CHANGED: /* brightness changed */
176dd985 4020 /* do not propagate these events */
3827e7a3
HMH		 4021 *ignore_acpi_ev = true;
4022 return true;
4023
4024 default:
4025 return false;
4026 }
4027}
4028
9ebd9e83
HMH		 4029static void thermal_dump_all_sensors(void);
4030
2d43f671 4031static bool hotkey_notify_6xxx(const u32 hkey,
106b4e66
HMH		 4032 bool *send_acpi_ev,
4033 bool *ignore_acpi_ev)
4034{
9ebd9e83
HMH		 4035 bool known = true;
4036
2d43f671 4037 /* 0x6000-0x6FFF: thermal alarms/notices and keyboard events */
106b4e66
HMH		 4038 *send_acpi_ev = true;
4039 *ignore_acpi_ev = false;
4040
4041 switch (hkey) {
9ebd9e83 4042 case TP_HKEY_EV_THM_TABLE_CHANGED:
0978e012 4043 pr_info("EC reports that Thermal Table has changed\n");
9ebd9e83
HMH		 4044 /* recommended action: do nothing, we don't have
4045 * Lenovo ATM information */
4046 return true;
67bcae6e 4047 case TP_HKEY_EV_ALARM_BAT_HOT:
0978e012 4048 pr_crit("THERMAL ALARM: battery is too hot!\n");
106b4e66 4049 /* recommended action: warn user through gui */
9ebd9e83 4050 break;
67bcae6e 4051 case TP_HKEY_EV_ALARM_BAT_XHOT:
0978e012 4052 pr_alert("THERMAL EMERGENCY: battery is extremely hot!\n");
106b4e66 4053 /* recommended action: immediate sleep/hibernate */
9ebd9e83 4054 break;
67bcae6e 4055 case TP_HKEY_EV_ALARM_SENSOR_HOT:
5cac62ac 4056 pr_crit("THERMAL ALARM: a sensor reports something is too hot!\n");
106b4e66
HMH		 4057 /* recommended action: warn user through gui, that */
4058 /* some internal component is too hot */
9ebd9e83 4059 break;
67bcae6e 4060 case TP_HKEY_EV_ALARM_SENSOR_XHOT:
5cac62ac 4061 pr_alert("THERMAL EMERGENCY: a sensor reports something is extremely hot!\n");
106b4e66 4062 /* recommended action: immediate sleep/hibernate */
9ebd9e83 4063 break;
6f62bc3e
RH		 4064 case TP_HKEY_EV_AC_CHANGED:
4065 /* X120e, X121e, X220, X220i, X220t, X230, T420, T420s, W520:
4066 * AC status changed; can be triggered by plugging or
4067 * unplugging AC adapter, docking or undocking. */
4068
4069 /* fallthrough */
2d43f671
HMH		 4070
4071 case TP_HKEY_EV_KEY_NUMLOCK:
4072 case TP_HKEY_EV_KEY_FN:
67ab6248 4073 case TP_HKEY_EV_KEY_FN_ESC:
2d43f671
HMH		 4074 /* key press events, we just ignore them as long as the EC
4075 * is still reporting them in the normal keyboard stream */
4076 *send_acpi_ev = false;
4077 *ignore_acpi_ev = true;
4078 return true;
4079
b03f4d49
L		 4080 case TP_HKEY_EV_TABLET_CHANGED:
4081 tpacpi_input_send_tabletsw();
4082 hotkey_tablet_mode_notify_change();
4083 *send_acpi_ev = false;
4084 break;
4085
5e6a2722
DH		 4086 case TP_HKEY_EV_PALM_DETECTED:
4087 case TP_HKEY_EV_PALM_UNDETECTED:
4088 /* palm detected hovering the keyboard, forward to user-space
4089 * via netlink for consumption */
4090 return true;
4091
106b4e66 4092 default:
2d43f671 4093 pr_warn("unknown possible thermal alarm or keyboard event received\n");
9ebd9e83 4094 known = false;
106b4e66 4095 }
9ebd9e83
HMH		 4096
4097 thermal_dump_all_sensors();
4098
4099 return known;
106b4e66
HMH		 4100}
4101
56b6aeb0
HMH		 4102static void hotkey_notify(struct ibm_struct *ibm, u32 event)
4103{
6a38abbf 4104 u32 hkey;
3827e7a3
HMH		 4105 bool send_acpi_ev;
4106 bool ignore_acpi_ev;
4107 bool known_ev;
3eea123d
HMH		 4108
4109 if (event != 0x80) {
0978e012 4110 pr_err("unknown HKEY notification event %d\n", event);
3eea123d 4111 /* forward it to userspace, maybe it knows how to handle it */
35ff8b9f
HMH		 4112 acpi_bus_generate_netlink_event(
4113 ibm->acpi->device->pnp.device_class,
e0b36fc5 4114 dev_name(&ibm->acpi->device->dev),
35ff8b9f 4115 event, 0);
3eea123d
HMH		 4116 return;
4117 }
4118
4119 while (1) {
4120 if (!acpi_evalf(hkey_handle, &hkey, "MHKP", "d")) {
0978e012 4121 pr_err("failed to retrieve HKEY event\n");
3eea123d
HMH		 4122 return;
4123 }
4124
4125 if (hkey == 0) {
4126 /* queue empty */
4127 return;
4128 }
4129
3827e7a3
HMH		 4130 send_acpi_ev = true;
4131 ignore_acpi_ev = false;
56b6aeb0 4132
ff80f137
HMH		 4133 switch (hkey >> 12) {
4134 case 1:
4135 /* 0x1000-0x1FFF: key presses */
3827e7a3
HMH		 4136 known_ev = hotkey_notify_hotkey(hkey, &send_acpi_ev,
4137 &ignore_acpi_ev);
ff80f137 4138 break;
a713b4d7 4139 case 2:
3827e7a3
HMH		 4140 /* 0x2000-0x2FFF: Wakeup reason */
4141 known_ev = hotkey_notify_wakeup(hkey, &send_acpi_ev,
4142 &ignore_acpi_ev);
a713b4d7
HMH		 4143 break;
4144 case 3:
3827e7a3 4145 /* 0x3000-0x3FFF: bay-related wakeups */
bf8b29c8
HMH		 4146 switch (hkey) {
4147 case TP_HKEY_EV_BAYEJ_ACK:
a713b4d7 4148 hotkey_autosleep_ack = 1;
0978e012 4149 pr_info("bay ejected\n");
50ebec09 4150 hotkey_wakeup_hotunplug_complete_notify_change();
3827e7a3 4151 known_ev = true;
bf8b29c8
HMH		 4152 break;
4153 case TP_HKEY_EV_OPTDRV_EJ:
4154 /* FIXME: kick libata if SATA link offline */
4155 known_ev = true;
4156 break;
4157 default:
3827e7a3 4158 known_ev = false;
a713b4d7
HMH		 4159 }
4160 break;
4161 case 4:
a50245af
HMH		 4162 /* 0x4000-0x4FFF: dock-related events */
4163 known_ev = hotkey_notify_dockevent(hkey, &send_acpi_ev,
4164 &ignore_acpi_ev);
a713b4d7 4165 break;
ff80f137 4166 case 5:
d1edb2b5 4167 /* 0x5000-0x5FFF: human interface helpers */
3827e7a3
HMH		 4168 known_ev = hotkey_notify_usrevent(hkey, &send_acpi_ev,
4169 &ignore_acpi_ev);
ff80f137 4170 break;
106b4e66 4171 case 6:
2d43f671
HMH		 4172 /* 0x6000-0x6FFF: thermal alarms/notices and
4173 * keyboard events */
4174 known_ev = hotkey_notify_6xxx(hkey, &send_acpi_ev,
106b4e66
HMH		 4175 &ignore_acpi_ev);
4176 break;
ff80f137
HMH		 4177 case 7:
4178 /* 0x7000-0x7FFF: misc */
67bcae6e
HMH		 4179 if (tp_features.hotkey_wlsw &&
4180 hkey == TP_HKEY_EV_RFKILL_CHANGED) {
733e27c1 4181 tpacpi_send_radiosw_update();
3b64b51d 4182 send_acpi_ev = 0;
3827e7a3 4183 known_ev = true;
6a38abbf 4184 break;
6a38abbf 4185 }
ff80f137
HMH		 4186 /* fallthrough to default */
4187 default:
3827e7a3 4188 known_ev = false;
3b64b51d 4189 }
3827e7a3 4190 if (!known_ev) {
0978e012 4191 pr_notice("unhandled HKEY event 0x%04x\n", hkey);
5cac62ac
AS		 4192 pr_notice("please report the conditions when this event happened to %s\n",
4193 TPACPI_MAIL);
6a38abbf 4194 }
ff80f137 4195
3eea123d 4196 /* netlink events */
3e5ce914 4197 if (!ignore_acpi_ev && send_acpi_ev) {
35ff8b9f
HMH		 4198 acpi_bus_generate_netlink_event(
4199 ibm->acpi->device->pnp.device_class,
e0b36fc5 4200 dev_name(&ibm->acpi->device->dev),
35ff8b9f 4201 event, hkey);
3eea123d 4202 }
56b6aeb0
HMH		 4203 }
4204}
4205
fd3c3a42 4206static void hotkey_suspend(void)
a713b4d7
HMH		 4207{
4208 /* Do these on suspend, we get the events on early resume! */
4209 hotkey_wakeup_reason = TP_ACPI_WAKEUP_NONE;
4210 hotkey_autosleep_ack = 0;
330947b8
SS		 4211
4212 /* save previous mode of adaptive keyboard of X1 Carbon */
f23a5bcb
BN		 4213 if (tp_features.has_adaptive_kbd) {
4214 if (!acpi_evalf(hkey_handle, &adaptive_keyboard_prev_mode,
4215 "GTRW", "dd", 0)) {
4216 pr_err("Cannot read adaptive keyboard mode.\n");
330947b8
SS		 4217 }
4218 }
a713b4d7
HMH		 4219}
4220
5c29d58f
HMH		 4221static void hotkey_resume(void)
4222{
d64c81c4
HMH		 4223 tpacpi_disable_brightness_delay();
4224
0d922e3b
HMH		 4225 if (hotkey_status_set(true) < 0 ||
4226 hotkey_mask_set(hotkey_acpi_mask) < 0)
5cac62ac 4227 pr_err("error while attempting to reset the event firmware interface\n");
0d922e3b 4228
733e27c1 4229 tpacpi_send_radiosw_update();
6c231bd5 4230 hotkey_tablet_mode_notify_change();
50ebec09
HMH		 4231 hotkey_wakeup_reason_notify_change();
4232 hotkey_wakeup_hotunplug_complete_notify_change();
db25f16d 4233 hotkey_poll_setup_safe(false);
330947b8
SS		 4234
4235 /* restore previous mode of adapive keyboard of X1 Carbon */
f23a5bcb
BN		 4236 if (tp_features.has_adaptive_kbd) {
4237 if (!acpi_evalf(hkey_handle, NULL, "STRW", "vd",
4238 adaptive_keyboard_prev_mode)) {
4239 pr_err("Cannot set adaptive keyboard mode.\n");
330947b8
SS		 4240 }
4241 }
5c29d58f
HMH		 4242}
4243
a0416420 4244/* procfs -------------------------------------------------------------- */
887965e6 4245static int hotkey_read(struct seq_file *m)
1da177e4 4246{
ae92bd17 4247 int res, status;
1da177e4 4248
d8fd94d9 4249 if (!tp_features.hotkey) {
887965e6
AD		 4250 seq_printf(m, "status:\t\tnot supported\n");
4251 return 0;
78f81cc4
BD		 4252 }
4253
7646ea88 4254 if (mutex_lock_killable(&hotkey_mutex))
fc589a3c 4255 return -ERESTARTSYS;
b2c985e7
HMH		 4256 res = hotkey_status_get(&status);
4257 if (!res)
4258 res = hotkey_mask_get();
40ca9fdf 4259 mutex_unlock(&hotkey_mutex);
b86c4722
HMH		 4260 if (res)
4261 return res;
1da177e4 4262
887965e6 4263 seq_printf(m, "status:\t\t%s\n", enabled(status, 0));
0d922e3b 4264 if (hotkey_all_mask) {
887965e6
AD		 4265 seq_printf(m, "mask:\t\t0x%08x\n", hotkey_user_mask);
4266 seq_printf(m, "commands:\tenable, disable, reset, <mask>\n");
1da177e4 4267 } else {
887965e6
AD		 4268 seq_printf(m, "mask:\t\tnot supported\n");
4269 seq_printf(m, "commands:\tenable, disable, reset\n");
1da177e4
LT		 4270 }
4271
887965e6 4272 return 0;
1da177e4
LT		 4273}
4274
406e988b 4275static void hotkey_enabledisable_warn(bool enable)
2586d566
HMH		 4276{
4277 tpacpi_log_usertask("procfs hotkey enable/disable");
406e988b 4278 if (!WARN((tpacpi_lifecycle == TPACPI_LIFE_RUNNING || !enable),
5cac62ac
AS		 4279 pr_fmt("hotkey enable/disable functionality has been removed from the driver. Hotkeys are always enabled.\n")))
4280 pr_err("Please remove the hotkey=enable module parameter, it is deprecated. Hotkeys are always enabled.\n");
2586d566
HMH		 4281}
4282
78f81cc4 4283static int hotkey_write(char *buf)
1da177e4 4284{
2586d566 4285 int res;
ae92bd17 4286 u32 mask;
1da177e4 4287 char *cmd;
1da177e4 4288
d8fd94d9 4289 if (!tp_features.hotkey)
1da177e4
LT		 4290 return -ENODEV;
4291
7646ea88 4292 if (mutex_lock_killable(&hotkey_mutex))
fc589a3c 4293 return -ERESTARTSYS;
40ca9fdf 4294
0d922e3b 4295 mask = hotkey_user_mask;
78f81cc4 4296
40ca9fdf 4297 res = 0;
1da177e4
LT		 4298 while ((cmd = next_cmd(&buf))) {
4299 if (strlencmp(cmd, "enable") == 0) {
406e988b 4300 hotkey_enabledisable_warn(1);
1da177e4 4301 } else if (strlencmp(cmd, "disable") == 0) {
406e988b 4302 hotkey_enabledisable_warn(0);
2586d566 4303 res = -EPERM;
1da177e4 4304 } else if (strlencmp(cmd, "reset") == 0) {
20c9aa46
HMH		 4305 mask = (hotkey_all_mask | hotkey_source_mask)
4306 & ~hotkey_reserved_mask;
1da177e4
LT		 4307 } else if (sscanf(cmd, "0x%x", &mask) == 1) {
4308 /* mask set */
4309 } else if (sscanf(cmd, "%x", &mask) == 1) {
4310 /* mask set */
40ca9fdf
HMH		 4311 } else {
4312 res = -EINVAL;
4313 goto errexit;
4314 }
1da177e4 4315 }
56e2c200 4316
0d922e3b 4317 if (!res) {
56e2c200
HMH		 4318 tpacpi_disclose_usertask("procfs hotkey",
4319 "set mask to 0x%08x\n", mask);
0d922e3b
HMH		 4320 res = hotkey_user_mask_set(mask);
4321 }
1da177e4 4322
40ca9fdf
HMH		 4323errexit:
4324 mutex_unlock(&hotkey_mutex);
4325 return res;
78f81cc4 4326}
1da177e4 4327
1ba90e3a 4328static const struct acpi_device_id ibm_htk_device_ids[] = {
9fbdaeb4
MI		 4329 {TPACPI_ACPI_IBM_HKEY_HID, 0},
4330 {TPACPI_ACPI_LENOVO_HKEY_HID, 0},
a3c42a46 4331 {TPACPI_ACPI_LENOVO_HKEY_V2_HID, 0},
1ba90e3a
TR		 4332 {"", 0},
4333};
4334
8d376cd6 4335static struct tp_acpi_drv_struct ibm_hotkey_acpidriver = {
1ba90e3a 4336 .hid = ibm_htk_device_ids,
8d376cd6
HMH		 4337 .notify = hotkey_notify,
4338 .handle = &hkey_handle,
4339 .type = ACPI_DEVICE_NOTIFY,
4340};
4341
a5763f22
HMH		 4342static struct ibm_struct hotkey_driver_data = {
4343 .name = "hotkey",
a5763f22
HMH		 4344 .read = hotkey_read,
4345 .write = hotkey_write,
4346 .exit = hotkey_exit,
5c29d58f 4347 .resume = hotkey_resume,
a713b4d7 4348 .suspend = hotkey_suspend,
8d376cd6 4349 .acpi = &ibm_hotkey_acpidriver,
a5763f22
HMH		 4350};
4351
56b6aeb0
HMH		 4352/*************************************************************************
4353 * Bluetooth subdriver
4354 */
1da177e4 4355
f74a27d4
HMH		 4356enum {
4357 /* ACPI GBDC/SBDC bits */
4358 TP_ACPI_BLUETOOTH_HWPRESENT = 0x01, /* Bluetooth hw available */
4359 TP_ACPI_BLUETOOTH_RADIOSSW = 0x02, /* Bluetooth radio enabled */
153f8220 4360 TP_ACPI_BLUETOOTH_RESUMECTRL = 0x04, /* Bluetooth state at resume:
08fedfc9 4361 0 = disable, 1 = enable */
153f8220
HMH		 4362};
4363
4364enum {
4365 /* ACPI \BLTH commands */
4366 TP_ACPI_BLTH_GET_ULTRAPORT_ID = 0x00, /* Get Ultraport BT ID */
4367 TP_ACPI_BLTH_GET_PWR_ON_RESUME = 0x01, /* Get power-on-resume state */
4368 TP_ACPI_BLTH_PWR_ON_ON_RESUME = 0x02, /* Resume powered on */
4369 TP_ACPI_BLTH_PWR_OFF_ON_RESUME = 0x03, /* Resume powered off */
4370 TP_ACPI_BLTH_SAVE_STATE = 0x05, /* Save state for S4/S5 */
f74a27d4
HMH		 4371};
4372
bee4cd9b
HMH		 4373#define TPACPI_RFK_BLUETOOTH_SW_NAME "tpacpi_bluetooth_sw"
4374
19d337df 4375static int bluetooth_get_status(void)
07431ec8
HMH		 4376{
4377 int status;
4378
a73f3091
HMH		 4379#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
4380 if (dbg_bluetoothemul)
4381 return (tpacpi_bluetooth_emulstate) ?
19d337df 4382 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF;
a73f3091
HMH		 4383#endif
4384
07431ec8
HMH		 4385 if (!acpi_evalf(hkey_handle, &status, "GBDC", "d"))
4386 return -EIO;
4387
0e74dc26 4388 return ((status & TP_ACPI_BLUETOOTH_RADIOSSW) != 0) ?
19d337df 4389 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF;
07431ec8
HMH		 4390}
4391
19d337df 4392static int bluetooth_set_status(enum tpacpi_rfkill_state state)
0e74dc26
HMH		 4393{
4394 int status;
4395
bee4cd9b 4396 vdbg_printk(TPACPI_DBG_RFKILL,
19d337df
JB		 4397 "will attempt to %s bluetooth\n",
4398 (state == TPACPI_RFK_RADIO_ON) ? "enable" : "disable");
bee4cd9b 4399
a73f3091
HMH		 4400#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
4401 if (dbg_bluetoothemul) {
19d337df 4402 tpacpi_bluetooth_emulstate = (state == TPACPI_RFK_RADIO_ON);
a73f3091
HMH		 4403 return 0;
4404 }
4405#endif
4406
19d337df 4407 if (state == TPACPI_RFK_RADIO_ON)
08fedfc9
HMH		 4408 status = TP_ACPI_BLUETOOTH_RADIOSSW
4409 | TP_ACPI_BLUETOOTH_RESUMECTRL;
4410 else
4411 status = 0;
19d337df 4412
07431ec8
HMH		 4413 if (!acpi_evalf(hkey_handle, NULL, "SBDC", "vd", status))
4414 return -EIO;
4415
4416 return 0;
4417}
f74a27d4 4418
d3a6ade4
HMH		 4419/* sysfs bluetooth enable ---------------------------------------------- */
4420static ssize_t bluetooth_enable_show(struct device *dev,
4421 struct device_attribute *attr,
4422 char *buf)
4423{
19d337df
JB		 4424 return tpacpi_rfk_sysfs_enable_show(TPACPI_RFK_BLUETOOTH_SW_ID,
4425 attr, buf);
d3a6ade4
HMH		 4426}
4427
4428static ssize_t bluetooth_enable_store(struct device *dev,
4429 struct device_attribute *attr,
4430 const char *buf, size_t count)
4431{
19d337df
JB		 4432 return tpacpi_rfk_sysfs_enable_store(TPACPI_RFK_BLUETOOTH_SW_ID,
4433 attr, buf, count);
d3a6ade4
HMH		 4434}
4435
b4dd04ac 4436static DEVICE_ATTR_RW(bluetooth_enable);
d3a6ade4
HMH		 4437
4438/* --------------------------------------------------------------------- */
4439
4440static struct attribute *bluetooth_attributes[] = {
4441 &dev_attr_bluetooth_enable.attr,
4442 NULL
4443};
4444
4445static const struct attribute_group bluetooth_attr_group = {
d3a6ade4
HMH		 4446 .attrs = bluetooth_attributes,
4447};
4448
19d337df
JB		 4449static const struct tpacpi_rfk_ops bluetooth_tprfk_ops = {
4450 .get_status = bluetooth_get_status,
4451 .set_status = bluetooth_set_status,
4452};
0e74dc26 4453
90d9d3c7
HMH		 4454static void bluetooth_shutdown(void)
4455{
4456 /* Order firmware to save current state to NVRAM */
4457 if (!acpi_evalf(NULL, NULL, "\\BLTH", "vd",
4458 TP_ACPI_BLTH_SAVE_STATE))
0978e012 4459 pr_notice("failed to save bluetooth state to NVRAM\n");
bee4cd9b
HMH		 4460 else
4461 vdbg_printk(TPACPI_DBG_RFKILL,
1f01358c 4462 "bluetooth state saved to NVRAM\n");
90d9d3c7
HMH		 4463}
4464
07431ec8
HMH		 4465static void bluetooth_exit(void)
4466{
4467 sysfs_remove_group(&tpacpi_pdev->dev.kobj,
4468 &bluetooth_attr_group);
19d337df
JB		 4469
4470 tpacpi_destroy_rfkill(TPACPI_RFK_BLUETOOTH_SW_ID);
4471
4472 bluetooth_shutdown();
07431ec8
HMH		 4473}
4474
cb299cfa
JY		 4475static const struct dmi_system_id bt_fwbug_list[] __initconst = {
4476 {
4477 .ident = "ThinkPad E485",
4478 .matches = {
4479 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
4480 DMI_MATCH(DMI_BOARD_NAME, "20KU"),
4481 },
4482 },
4483 {
4484 .ident = "ThinkPad E585",
4485 .matches = {
4486 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
4487 DMI_MATCH(DMI_BOARD_NAME, "20KV"),
4488 },
4489 },
4490 {
4491 .ident = "ThinkPad A285 - 20MW",
4492 .matches = {
4493 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
4494 DMI_MATCH(DMI_BOARD_NAME, "20MW"),
4495 },
4496 },
4497 {
4498 .ident = "ThinkPad A285 - 20MX",
4499 .matches = {
4500 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
4501 DMI_MATCH(DMI_BOARD_NAME, "20MX"),
4502 },
4503 },
4504 {
4505 .ident = "ThinkPad A485 - 20MU",
4506 .matches = {
4507 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
4508 DMI_MATCH(DMI_BOARD_NAME, "20MU"),
4509 },
4510 },
4511 {
4512 .ident = "ThinkPad A485 - 20MV",
4513 .matches = {
4514 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
4515 DMI_MATCH(DMI_BOARD_NAME, "20MV"),
4516 },
4517 },
4518 {}
4519};
4520
4521static const struct pci_device_id fwbug_cards_ids[] __initconst = {
4522 { PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x24F3) },
4523 { PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x24FD) },
4524 { PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x2526) },
4525 {}
4526};
4527
4528
4529static int __init have_bt_fwbug(void)
4530{
4531 /*
4532 * Some AMD based ThinkPads have a firmware bug that calling
4533 * "GBDC" will cause bluetooth on Intel wireless cards blocked
4534 */
4535 if (dmi_check_system(bt_fwbug_list) && pci_dev_present(fwbug_cards_ids)) {
4536 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL,
4537 FW_BUG "disable bluetooth subdriver for Intel cards\n");
4538 return 1;
4539 } else
4540 return 0;
4541}
4542
a5763f22 4543static int __init bluetooth_init(struct ibm_init_struct *iibm)
1da177e4 4544{
d3a6ade4 4545 int res;
d6fdd1e9
HMH		 4546 int status = 0;
4547
bee4cd9b
HMH		 4548 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL,
4549 "initializing bluetooth subdriver\n");
fe08bc4b 4550
e0c7dfe7 4551 TPACPI_ACPIHANDLE_INIT(hkey);
5fba344c 4552
78f81cc4
BD		 4553 /* bluetooth not supported on 570, 600e/x, 770e, 770x, A21e, A2xm/p,
4554 G4x, R30, R31, R40e, R50e, T20-22, X20-21 */
cb299cfa 4555 tp_features.bluetooth = !have_bt_fwbug() && hkey_handle &&
d6fdd1e9
HMH		 4556 acpi_evalf(hkey_handle, &status, "GBDC", "qd");
4557
bee4cd9b
HMH		 4558 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL,
4559 "bluetooth is %s, status 0x%02x\n",
d6fdd1e9
HMH		 4560 str_supported(tp_features.bluetooth),
4561 status);
4562
a73f3091
HMH		 4563#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
4564 if (dbg_bluetoothemul) {
4565 tp_features.bluetooth = 1;
0978e012 4566 pr_info("bluetooth switch emulation enabled\n");
a73f3091
HMH		 4567 } else
4568#endif
3a872080
HMH		 4569 if (tp_features.bluetooth &&
4570 !(status & TP_ACPI_BLUETOOTH_HWPRESENT)) {
4571 /* no bluetooth hardware present in system */
4572 tp_features.bluetooth = 0;
bee4cd9b 4573 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL,
3a872080
HMH		 4574 "bluetooth hardware not installed\n");
4575 }
4576
0e74dc26
HMH		 4577 if (!tp_features.bluetooth)
4578 return 1;
4579
0e74dc26 4580 res = tpacpi_new_rfkill(TPACPI_RFK_BLUETOOTH_SW_ID,
19d337df 4581 &bluetooth_tprfk_ops,
0e74dc26 4582 RFKILL_TYPE_BLUETOOTH,
bee4cd9b 4583 TPACPI_RFK_BLUETOOTH_SW_NAME,
19d337df
JB		 4584 true);
4585 if (res)
4586 return res;
4587
4588 res = sysfs_create_group(&tpacpi_pdev->dev.kobj,
4589 &bluetooth_attr_group);
0e74dc26 4590 if (res) {
19d337df 4591 tpacpi_destroy_rfkill(TPACPI_RFK_BLUETOOTH_SW_ID);
0e74dc26 4592 return res;
d6fdd1e9 4593 }
fe08bc4b 4594
0e74dc26 4595 return 0;
1da177e4
LT		 4596}
4597
d3a6ade4 4598/* procfs -------------------------------------------------------------- */
887965e6 4599static int bluetooth_read(struct seq_file *m)
1da177e4 4600{
887965e6 4601 return tpacpi_rfk_procfs_read(TPACPI_RFK_BLUETOOTH_SW_ID, m);
1da177e4
LT		 4602}
4603
78f81cc4 4604static int bluetooth_write(char *buf)
1da177e4 4605{
19d337df 4606 return tpacpi_rfk_procfs_write(TPACPI_RFK_BLUETOOTH_SW_ID, buf);
1da177e4
LT		 4607}
4608
a5763f22
HMH		 4609static struct ibm_struct bluetooth_driver_data = {
4610 .name = "bluetooth",
4611 .read = bluetooth_read,
4612 .write = bluetooth_write,
d3a6ade4 4613 .exit = bluetooth_exit,
90d9d3c7 4614 .shutdown = bluetooth_shutdown,
a5763f22
HMH		 4615};
4616
56b6aeb0
HMH		 4617/*************************************************************************
4618 * Wan subdriver
4619 */
4620
f74a27d4
HMH		 4621enum {
4622 /* ACPI GWAN/SWAN bits */
4623 TP_ACPI_WANCARD_HWPRESENT = 0x01, /* Wan hw available */
4624 TP_ACPI_WANCARD_RADIOSSW = 0x02, /* Wan radio enabled */
153f8220 4625 TP_ACPI_WANCARD_RESUMECTRL = 0x04, /* Wan state at resume:
08fedfc9 4626 0 = disable, 1 = enable */
f74a27d4
HMH		 4627};
4628
bee4cd9b
HMH		 4629#define TPACPI_RFK_WWAN_SW_NAME "tpacpi_wwan_sw"
4630
19d337df 4631static int wan_get_status(void)
07431ec8
HMH		 4632{
4633 int status;
4634
a73f3091
HMH		 4635#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
4636 if (dbg_wwanemul)
4637 return (tpacpi_wwan_emulstate) ?
19d337df 4638 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF;
a73f3091
HMH		 4639#endif
4640
07431ec8
HMH		 4641 if (!acpi_evalf(hkey_handle, &status, "GWAN", "d"))
4642 return -EIO;
4643
0e74dc26 4644 return ((status & TP_ACPI_WANCARD_RADIOSSW) != 0) ?
19d337df 4645 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF;
0e74dc26
HMH		 4646}
4647
19d337df 4648static int wan_set_status(enum tpacpi_rfkill_state state)
07431ec8
HMH		 4649{
4650 int status;
4651
bee4cd9b 4652 vdbg_printk(TPACPI_DBG_RFKILL,
19d337df
JB		 4653 "will attempt to %s wwan\n",
4654 (state == TPACPI_RFK_RADIO_ON) ? "enable" : "disable");
bee4cd9b 4655
a73f3091
HMH		 4656#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
4657 if (dbg_wwanemul) {
19d337df 4658 tpacpi_wwan_emulstate = (state == TPACPI_RFK_RADIO_ON);
a73f3091
HMH		 4659 return 0;
4660 }
4661#endif
4662
19d337df 4663 if (state == TPACPI_RFK_RADIO_ON)
08fedfc9
HMH		 4664 status = TP_ACPI_WANCARD_RADIOSSW
4665 | TP_ACPI_WANCARD_RESUMECTRL;
4666 else
4667 status = 0;
19d337df 4668
07431ec8
HMH		 4669 if (!acpi_evalf(hkey_handle, NULL, "SWAN", "vd", status))
4670 return -EIO;
4671
4672 return 0;
4673}
f74a27d4 4674
d3a6ade4
HMH		 4675/* sysfs wan enable ---------------------------------------------------- */
4676static ssize_t wan_enable_show(struct device *dev,
4677 struct device_attribute *attr,
4678 char *buf)
4679{
19d337df
JB		 4680 return tpacpi_rfk_sysfs_enable_show(TPACPI_RFK_WWAN_SW_ID,
4681 attr, buf);
d3a6ade4
HMH		 4682}
4683
4684static ssize_t wan_enable_store(struct device *dev,
4685 struct device_attribute *attr,
4686 const char *buf, size_t count)
4687{
19d337df
JB		 4688 return tpacpi_rfk_sysfs_enable_store(TPACPI_RFK_WWAN_SW_ID,
4689 attr, buf, count);
d3a6ade4
HMH		 4690}
4691
5fb73bc2
BM		 4692static DEVICE_ATTR(wwan_enable, S_IWUSR | S_IRUGO,
4693 wan_enable_show, wan_enable_store);
d3a6ade4
HMH		 4694
4695/* --------------------------------------------------------------------- */
4696
4697static struct attribute *wan_attributes[] = {
5fb73bc2 4698 &dev_attr_wwan_enable.attr,
d3a6ade4
HMH		 4699 NULL
4700};
4701
4702static const struct attribute_group wan_attr_group = {
d3a6ade4
HMH		 4703 .attrs = wan_attributes,
4704};
4705
19d337df
JB		 4706static const struct tpacpi_rfk_ops wan_tprfk_ops = {
4707 .get_status = wan_get_status,
4708 .set_status = wan_set_status,
4709};
0e74dc26 4710
90d9d3c7
HMH		 4711static void wan_shutdown(void)
4712{
4713 /* Order firmware to save current state to NVRAM */
4714 if (!acpi_evalf(NULL, NULL, "\\WGSV", "vd",
4715 TP_ACPI_WGSV_SAVE_STATE))
0978e012 4716 pr_notice("failed to save WWAN state to NVRAM\n");
bee4cd9b
HMH		 4717 else
4718 vdbg_printk(TPACPI_DBG_RFKILL,
4719 "WWAN state saved to NVRAM\n");
90d9d3c7
HMH		 4720}
4721
07431ec8
HMH		 4722static void wan_exit(void)
4723{
4724 sysfs_remove_group(&tpacpi_pdev->dev.kobj,
4725 &wan_attr_group);
19d337df
JB		 4726
4727 tpacpi_destroy_rfkill(TPACPI_RFK_WWAN_SW_ID);
4728
4729 wan_shutdown();
07431ec8
HMH		 4730}
4731
a5763f22 4732static int __init wan_init(struct ibm_init_struct *iibm)
42adb53c 4733{
d3a6ade4 4734 int res;
d6fdd1e9
HMH		 4735 int status = 0;
4736
bee4cd9b
HMH		 4737 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL,
4738 "initializing wan subdriver\n");
fe08bc4b 4739
e0c7dfe7 4740 TPACPI_ACPIHANDLE_INIT(hkey);
5fba344c 4741
d8fd94d9 4742 tp_features.wan = hkey_handle &&
d6fdd1e9
HMH		 4743 acpi_evalf(hkey_handle, &status, "GWAN", "qd");
4744
bee4cd9b
HMH		 4745 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL,
4746 "wan is %s, status 0x%02x\n",
d6fdd1e9
HMH		 4747 str_supported(tp_features.wan),
4748 status);
4749
a73f3091
HMH		 4750#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
4751 if (dbg_wwanemul) {
4752 tp_features.wan = 1;
0978e012 4753 pr_info("wwan switch emulation enabled\n");
a73f3091
HMH		 4754 } else
4755#endif
3a872080
HMH		 4756 if (tp_features.wan &&
4757 !(status & TP_ACPI_WANCARD_HWPRESENT)) {
4758 /* no wan hardware present in system */
4759 tp_features.wan = 0;
bee4cd9b 4760 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL,
3a872080
HMH		 4761 "wan hardware not installed\n");
4762 }
4763
0e74dc26
HMH		 4764 if (!tp_features.wan)
4765 return 1;
4766
0e74dc26 4767 res = tpacpi_new_rfkill(TPACPI_RFK_WWAN_SW_ID,
19d337df 4768 &wan_tprfk_ops,
0e74dc26 4769 RFKILL_TYPE_WWAN,
bee4cd9b 4770 TPACPI_RFK_WWAN_SW_NAME,
19d337df
JB		 4771 true);
4772 if (res)
4773 return res;
4774
4775 res = sysfs_create_group(&tpacpi_pdev->dev.kobj,
4776 &wan_attr_group);
4777
0e74dc26 4778 if (res) {
19d337df 4779 tpacpi_destroy_rfkill(TPACPI_RFK_WWAN_SW_ID);
0e74dc26 4780 return res;
d6fdd1e9 4781 }
fe08bc4b 4782
0e74dc26 4783 return 0;
42adb53c
JF		 4784}
4785
d3a6ade4 4786/* procfs -------------------------------------------------------------- */
887965e6 4787static int wan_read(struct seq_file *m)
42adb53c 4788{
887965e6 4789 return tpacpi_rfk_procfs_read(TPACPI_RFK_WWAN_SW_ID, m);
42adb53c
JF		 4790}
4791
4792static int wan_write(char *buf)
4793{
19d337df 4794 return tpacpi_rfk_procfs_write(TPACPI_RFK_WWAN_SW_ID, buf);
42adb53c
JF		 4795}
4796
a5763f22
HMH		 4797static struct ibm_struct wan_driver_data = {
4798 .name = "wan",
4799 .read = wan_read,
4800 .write = wan_write,
d3a6ade4 4801 .exit = wan_exit,
90d9d3c7 4802 .shutdown = wan_shutdown,
a5763f22
HMH		 4803};
4804
0045c0aa
HMH		 4805/*************************************************************************
4806 * UWB subdriver
4807 */
4808
4809enum {
4810 /* ACPI GUWB/SUWB bits */
4811 TP_ACPI_UWB_HWPRESENT = 0x01, /* UWB hw available */
4812 TP_ACPI_UWB_RADIOSSW = 0x02, /* UWB radio enabled */
4813};
4814
bee4cd9b
HMH		 4815#define TPACPI_RFK_UWB_SW_NAME "tpacpi_uwb_sw"
4816
19d337df 4817static int uwb_get_status(void)
0045c0aa
HMH		 4818{
4819 int status;
4820
0045c0aa
HMH		 4821#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
4822 if (dbg_uwbemul)
4823 return (tpacpi_uwb_emulstate) ?
19d337df 4824 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF;
0045c0aa
HMH		 4825#endif
4826
4827 if (!acpi_evalf(hkey_handle, &status, "GUWB", "d"))
4828 return -EIO;
4829
4830 return ((status & TP_ACPI_UWB_RADIOSSW) != 0) ?
19d337df 4831 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF;
0045c0aa
HMH		 4832}
4833
19d337df 4834static int uwb_set_status(enum tpacpi_rfkill_state state)
0045c0aa
HMH		 4835{
4836 int status;
4837
bee4cd9b 4838 vdbg_printk(TPACPI_DBG_RFKILL,
19d337df
JB		 4839 "will attempt to %s UWB\n",
4840 (state == TPACPI_RFK_RADIO_ON) ? "enable" : "disable");
bee4cd9b 4841
0045c0aa
HMH		 4842#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
4843 if (dbg_uwbemul) {
19d337df 4844 tpacpi_uwb_emulstate = (state == TPACPI_RFK_RADIO_ON);
0045c0aa
HMH		 4845 return 0;
4846 }
4847#endif
4848
19d337df
JB		 4849 if (state == TPACPI_RFK_RADIO_ON)
4850 status = TP_ACPI_UWB_RADIOSSW;
4851 else
4852 status = 0;
4853
0045c0aa
HMH		 4854 if (!acpi_evalf(hkey_handle, NULL, "SUWB", "vd", status))
4855 return -EIO;
4856
0045c0aa
HMH		 4857 return 0;
4858}
4859
4860/* --------------------------------------------------------------------- */
4861
19d337df
JB		 4862static const struct tpacpi_rfk_ops uwb_tprfk_ops = {
4863 .get_status = uwb_get_status,
4864 .set_status = uwb_set_status,
4865};
0045c0aa
HMH		 4866
4867static void uwb_exit(void)
4868{
19d337df 4869 tpacpi_destroy_rfkill(TPACPI_RFK_UWB_SW_ID);
0045c0aa
HMH		 4870}
4871
4872static int __init uwb_init(struct ibm_init_struct *iibm)
4873{
4874 int res;
4875 int status = 0;
4876
bee4cd9b
HMH		 4877 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL,
4878 "initializing uwb subdriver\n");
0045c0aa
HMH		 4879
4880 TPACPI_ACPIHANDLE_INIT(hkey);
4881
4882 tp_features.uwb = hkey_handle &&
4883 acpi_evalf(hkey_handle, &status, "GUWB", "qd");
4884
bee4cd9b
HMH		 4885 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL,
4886 "uwb is %s, status 0x%02x\n",
0045c0aa
HMH		 4887 str_supported(tp_features.uwb),
4888 status);
4889
4890#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
4891 if (dbg_uwbemul) {
4892 tp_features.uwb = 1;
0978e012 4893 pr_info("uwb switch emulation enabled\n");
0045c0aa
HMH		 4894 } else
4895#endif
4896 if (tp_features.uwb &&
4897 !(status & TP_ACPI_UWB_HWPRESENT)) {
4898 /* no uwb hardware present in system */
4899 tp_features.uwb = 0;
4900 dbg_printk(TPACPI_DBG_INIT,
4901 "uwb hardware not installed\n");
4902 }
4903
4904 if (!tp_features.uwb)
4905 return 1;
4906
4907 res = tpacpi_new_rfkill(TPACPI_RFK_UWB_SW_ID,
19d337df 4908 &uwb_tprfk_ops,
0045c0aa 4909 RFKILL_TYPE_UWB,
bee4cd9b 4910 TPACPI_RFK_UWB_SW_NAME,
19d337df 4911 false);
0045c0aa
HMH		 4912 return res;
4913}
4914
4915static struct ibm_struct uwb_driver_data = {
4916 .name = "uwb",
4917 .exit = uwb_exit,
4918 .flags.experimental = 1,
4919};
4920
56b6aeb0
HMH		 4921/*************************************************************************
4922 * Video subdriver
4923 */
4924
d7c1d17d
HMH		 4925#ifdef CONFIG_THINKPAD_ACPI_VIDEO
4926
f74a27d4
HMH		 4927enum video_access_mode {
4928 TPACPI_VIDEO_NONE = 0,
4929 TPACPI_VIDEO_570, /* 570 */
4930 TPACPI_VIDEO_770, /* 600e/x, 770e, 770x */
4931 TPACPI_VIDEO_NEW, /* all others */
4932};
4933
4934enum { /* video status flags, based on VIDEO_570 */
4935 TP_ACPI_VIDEO_S_LCD = 0x01, /* LCD output enabled */
4936 TP_ACPI_VIDEO_S_CRT = 0x02, /* CRT output enabled */
4937 TP_ACPI_VIDEO_S_DVI = 0x08, /* DVI output enabled */
4938};
4939
4940enum { /* TPACPI_VIDEO_570 constants */
4941 TP_ACPI_VIDEO_570_PHSCMD = 0x87, /* unknown magic constant :( */
4942 TP_ACPI_VIDEO_570_PHSMASK = 0x03, /* PHS bits that map to
4943 * video_status_flags */
4944 TP_ACPI_VIDEO_570_PHS2CMD = 0x8b, /* unknown magic constant :( */
4945 TP_ACPI_VIDEO_570_PHS2SET = 0x80, /* unknown magic constant :( */
4946};
4947
9a8e1738
HMH		 4948static enum video_access_mode video_supported;
4949static int video_orig_autosw;
78f81cc4 4950
f74a27d4
HMH		 4951static int video_autosw_get(void);
4952static int video_autosw_set(int enable);
4953
112a6ee0
JP		 4954TPACPI_HANDLE(vid, root,
4955 "\\_SB.PCI.AGP.VGA", /* 570 */
4956 "\\_SB.PCI0.AGP0.VID0", /* 600e/x, 770x */
4957 "\\_SB.PCI0.VID0", /* 770e */
4958 "\\_SB.PCI0.VID", /* A21e, G4x, R50e, X30, X40 */
4959 "\\_SB.PCI0.AGP.VGA", /* X100e and a few others */
4960 "\\_SB.PCI0.AGP.VID", /* all others */
4961 ); /* R30, R31 */
4962
e0c7dfe7 4963TPACPI_HANDLE(vid2, root, "\\_SB.PCI0.AGPB.VID"); /* G41 */
56b6aeb0 4964
a5763f22 4965static int __init video_init(struct ibm_init_struct *iibm)
1da177e4 4966{
78f81cc4
BD		 4967 int ivga;
4968
fe08bc4b
HMH		 4969 vdbg_printk(TPACPI_DBG_INIT, "initializing video subdriver\n");
4970
e0c7dfe7 4971 TPACPI_ACPIHANDLE_INIT(vid);
e28393c0
HMH		 4972 if (tpacpi_is_ibm())
4973 TPACPI_ACPIHANDLE_INIT(vid2);
5fba344c 4974
78f81cc4
BD		 4975 if (vid2_handle && acpi_evalf(NULL, &ivga, "\\IVGA", "d") && ivga)
4976 /* G41, assume IVGA doesn't change */
4977 vid_handle = vid2_handle;
4978
4979 if (!vid_handle)
4980 /* video switching not supported on R30, R31 */
efa27145 4981 video_supported = TPACPI_VIDEO_NONE;
e28393c0
HMH		 4982 else if (tpacpi_is_ibm() &&
4983 acpi_evalf(vid_handle, &video_orig_autosw, "SWIT", "qd"))
78f81cc4 4984 /* 570 */
efa27145 4985 video_supported = TPACPI_VIDEO_570;
e28393c0
HMH		 4986 else if (tpacpi_is_ibm() &&
4987 acpi_evalf(vid_handle, &video_orig_autosw, "^VADL", "qd"))
78f81cc4 4988 /* 600e/x, 770e, 770x */
efa27145 4989 video_supported = TPACPI_VIDEO_770;
78f81cc4
BD		 4990 else
4991 /* all others */
efa27145 4992 video_supported = TPACPI_VIDEO_NEW;
1da177e4 4993
fe08bc4b
HMH		 4994 vdbg_printk(TPACPI_DBG_INIT, "video is %s, mode %d\n",
4995 str_supported(video_supported != TPACPI_VIDEO_NONE),
4996 video_supported);
4997
72a979f0 4998 return (video_supported != TPACPI_VIDEO_NONE) ? 0 : 1;
1da177e4
LT		 4999}
5000
56b6aeb0
HMH		 5001static void video_exit(void)
5002{
83f34724
HMH		 5003 dbg_printk(TPACPI_DBG_EXIT,
5004 "restoring original video autoswitch mode\n");
5005 if (video_autosw_set(video_orig_autosw))
5cac62ac 5006 pr_err("error while trying to restore original video autoswitch mode\n");
56b6aeb0
HMH		 5007}
5008
83f34724 5009static int video_outputsw_get(void)
1da177e4
LT		 5010{
5011 int status = 0;
5012 int i;
5013
83f34724
HMH		 5014 switch (video_supported) {
5015 case TPACPI_VIDEO_570:
5016 if (!acpi_evalf(NULL, &i, "\\_SB.PHS", "dd",
5017 TP_ACPI_VIDEO_570_PHSCMD))
5018 return -EIO;
5019 status = i & TP_ACPI_VIDEO_570_PHSMASK;
5020 break;
5021 case TPACPI_VIDEO_770:
5022 if (!acpi_evalf(NULL, &i, "\\VCDL", "d"))
5023 return -EIO;
5024 if (i)
5025 status |= TP_ACPI_VIDEO_S_LCD;
5026 if (!acpi_evalf(NULL, &i, "\\VCDC", "d"))
5027 return -EIO;
5028 if (i)
5029 status |= TP_ACPI_VIDEO_S_CRT;
5030 break;
5031 case TPACPI_VIDEO_NEW:
5032 if (!acpi_evalf(NULL, NULL, "\\VUPS", "vd", 1) ||
5033 !acpi_evalf(NULL, &i, "\\VCDC", "d"))
5034 return -EIO;
5035 if (i)
5036 status |= TP_ACPI_VIDEO_S_CRT;
5037
5038 if (!acpi_evalf(NULL, NULL, "\\VUPS", "vd", 0) ||
5039 !acpi_evalf(NULL, &i, "\\VCDL", "d"))
5040 return -EIO;
5041 if (i)
5042 status |= TP_ACPI_VIDEO_S_LCD;
5043 if (!acpi_evalf(NULL, &i, "\\VCDD", "d"))
5044 return -EIO;
5045 if (i)
5046 status |= TP_ACPI_VIDEO_S_DVI;
5047 break;
5048 default:
5049 return -ENOSYS;
78f81cc4
BD		 5050 }
5051
5052 return status;
5053}
1da177e4 5054
83f34724 5055static int video_outputsw_set(int status)
78f81cc4 5056{
83f34724
HMH		 5057 int autosw;
5058 int res = 0;
5059
5060 switch (video_supported) {
5061 case TPACPI_VIDEO_570:
5062 res = acpi_evalf(NULL, NULL,
5063 "\\_SB.PHS2", "vdd",
5064 TP_ACPI_VIDEO_570_PHS2CMD,
5065 status | TP_ACPI_VIDEO_570_PHS2SET);
5066 break;
5067 case TPACPI_VIDEO_770:
5068 autosw = video_autosw_get();
5069 if (autosw < 0)
5070 return autosw;
1da177e4 5071
83f34724
HMH		 5072 res = video_autosw_set(1);
5073 if (res)
5074 return res;
5075 res = acpi_evalf(vid_handle, NULL,
5076 "ASWT", "vdd", status * 0x100, 0);
5077 if (!autosw && video_autosw_set(autosw)) {
0978e012 5078 pr_err("video auto-switch left enabled due to error\n");
83f34724
HMH		 5079 return -EIO;
5080 }
5081 break;
5082 case TPACPI_VIDEO_NEW:
5083 res = acpi_evalf(NULL, NULL, "\\VUPS", "vd", 0x80) &&
35ff8b9f 5084 acpi_evalf(NULL, NULL, "\\VSDS", "vdd", status, 1);
83f34724
HMH		 5085 break;
5086 default:
5087 return -ENOSYS;
5088 }
1da177e4 5089
72a979f0 5090 return (res) ? 0 : -EIO;
1da177e4
LT		 5091}
5092
83f34724 5093static int video_autosw_get(void)
78f81cc4 5094{
83f34724 5095 int autosw = 0;
78f81cc4 5096
83f34724
HMH		 5097 switch (video_supported) {
5098 case TPACPI_VIDEO_570:
5099 if (!acpi_evalf(vid_handle, &autosw, "SWIT", "d"))
5100 return -EIO;
5101 break;
5102 case TPACPI_VIDEO_770:
5103 case TPACPI_VIDEO_NEW:
5104 if (!acpi_evalf(vid_handle, &autosw, "^VDEE", "d"))
5105 return -EIO;
5106 break;
5107 default:
5108 return -ENOSYS;
5109 }
78f81cc4 5110
83f34724 5111 return autosw & 1;
78f81cc4
BD		 5112}
5113
83f34724 5114static int video_autosw_set(int enable)
78f81cc4 5115{
72a979f0 5116 if (!acpi_evalf(vid_handle, NULL, "_DOS", "vd", (enable) ? 1 : 0))
83f34724
HMH		 5117 return -EIO;
5118 return 0;
78f81cc4
BD		 5119}
5120
83f34724 5121static int video_outputsw_cycle(void)
78f81cc4 5122{
83f34724
HMH		 5123 int autosw = video_autosw_get();
5124 int res;
78f81cc4 5125
83f34724
HMH		 5126 if (autosw < 0)
5127 return autosw;
78f81cc4 5128
83f34724
HMH		 5129 switch (video_supported) {
5130 case TPACPI_VIDEO_570:
5131 res = video_autosw_set(1);
5132 if (res)
5133 return res;
5134 res = acpi_evalf(ec_handle, NULL, "_Q16", "v");
5135 break;
5136 case TPACPI_VIDEO_770:
5137 case TPACPI_VIDEO_NEW:
5138 res = video_autosw_set(1);
5139 if (res)
5140 return res;
5141 res = acpi_evalf(vid_handle, NULL, "VSWT", "v");
5142 break;
5143 default:
5144 return -ENOSYS;
5145 }
5146 if (!autosw && video_autosw_set(autosw)) {
0978e012 5147 pr_err("video auto-switch left enabled due to error\n");
83f34724 5148 return -EIO;
78f81cc4
BD		 5149 }
5150
72a979f0 5151 return (res) ? 0 : -EIO;
83f34724
HMH		 5152}
5153
5154static int video_expand_toggle(void)
5155{
5156 switch (video_supported) {
5157 case TPACPI_VIDEO_570:
72a979f0 5158 return acpi_evalf(ec_handle, NULL, "_Q17", "v") ?
83f34724
HMH		 5159 0 : -EIO;
5160 case TPACPI_VIDEO_770:
72a979f0 5161 return acpi_evalf(vid_handle, NULL, "VEXP", "v") ?
83f34724
HMH		 5162 0 : -EIO;
5163 case TPACPI_VIDEO_NEW:
72a979f0 5164 return acpi_evalf(NULL, NULL, "\\VEXP", "v") ?
83f34724
HMH		 5165 0 : -EIO;
5166 default:
5167 return -ENOSYS;
5168 }
5169 /* not reached */
78f81cc4
BD		 5170}
5171
887965e6 5172static int video_read(struct seq_file *m)
56b6aeb0 5173{
83f34724 5174 int status, autosw;
56b6aeb0 5175
83f34724 5176 if (video_supported == TPACPI_VIDEO_NONE) {
887965e6
AD		 5177 seq_printf(m, "status:\t\tnot supported\n");
5178 return 0;
56b6aeb0
HMH		 5179 }
5180
b525c06c
HMH		 5181 /* Even reads can crash X.org, so... */
5182 if (!capable(CAP_SYS_ADMIN))
5183 return -EPERM;
5184
83f34724
HMH		 5185 status = video_outputsw_get();
5186 if (status < 0)
5187 return status;
5188
5189 autosw = video_autosw_get();
5190 if (autosw < 0)
5191 return autosw;
5192
887965e6
AD		 5193 seq_printf(m, "status:\t\tsupported\n");
5194 seq_printf(m, "lcd:\t\t%s\n", enabled(status, 0));
5195 seq_printf(m, "crt:\t\t%s\n", enabled(status, 1));
efa27145 5196 if (video_supported == TPACPI_VIDEO_NEW)
887965e6
AD		 5197 seq_printf(m, "dvi:\t\t%s\n", enabled(status, 3));
5198 seq_printf(m, "auto:\t\t%s\n", enabled(autosw, 0));
5199 seq_printf(m, "commands:\tlcd_enable, lcd_disable\n");
5200 seq_printf(m, "commands:\tcrt_enable, crt_disable\n");
efa27145 5201 if (video_supported == TPACPI_VIDEO_NEW)
887965e6
AD		 5202 seq_printf(m, "commands:\tdvi_enable, dvi_disable\n");
5203 seq_printf(m, "commands:\tauto_enable, auto_disable\n");
5204 seq_printf(m, "commands:\tvideo_switch, expand_toggle\n");
56b6aeb0 5205
887965e6 5206 return 0;
56b6aeb0
HMH		 5207}
5208
78f81cc4 5209static int video_write(char *buf)
1da177e4
LT		 5210{
5211 char *cmd;
5212 int enable, disable, status;
83f34724 5213 int res;
1da177e4 5214
83f34724 5215 if (video_supported == TPACPI_VIDEO_NONE)
78f81cc4
BD		 5216 return -ENODEV;
5217
b525c06c
HMH		 5218 /* Even reads can crash X.org, let alone writes... */
5219 if (!capable(CAP_SYS_ADMIN))
5220 return -EPERM;
5221
83f34724
HMH		 5222 enable = 0;
5223 disable = 0;
1da177e4
LT		 5224
5225 while ((cmd = next_cmd(&buf))) {
5226 if (strlencmp(cmd, "lcd_enable") == 0) {
83f34724 5227 enable |= TP_ACPI_VIDEO_S_LCD;
1da177e4 5228 } else if (strlencmp(cmd, "lcd_disable") == 0) {
83f34724 5229 disable |= TP_ACPI_VIDEO_S_LCD;
1da177e4 5230 } else if (strlencmp(cmd, "crt_enable") == 0) {
83f34724 5231 enable |= TP_ACPI_VIDEO_S_CRT;
1da177e4 5232 } else if (strlencmp(cmd, "crt_disable") == 0) {
83f34724 5233 disable |= TP_ACPI_VIDEO_S_CRT;
efa27145 5234 } else if (video_supported == TPACPI_VIDEO_NEW &&
78f81cc4 5235 strlencmp(cmd, "dvi_enable") == 0) {
83f34724 5236 enable |= TP_ACPI_VIDEO_S_DVI;
efa27145 5237 } else if (video_supported == TPACPI_VIDEO_NEW &&
78f81cc4 5238 strlencmp(cmd, "dvi_disable") == 0) {
83f34724 5239 disable |= TP_ACPI_VIDEO_S_DVI;
1da177e4 5240 } else if (strlencmp(cmd, "auto_enable") == 0) {
83f34724
HMH		 5241 res = video_autosw_set(1);
5242 if (res)
5243 return res;
1da177e4 5244 } else if (strlencmp(cmd, "auto_disable") == 0) {
83f34724
HMH		 5245 res = video_autosw_set(0);
5246 if (res)
5247 return res;
1da177e4 5248 } else if (strlencmp(cmd, "video_switch") == 0) {
83f34724
HMH		 5249 res = video_outputsw_cycle();
5250 if (res)
5251 return res;
1da177e4 5252 } else if (strlencmp(cmd, "expand_toggle") == 0) {
83f34724
HMH		 5253 res = video_expand_toggle();
5254 if (res)
5255 return res;
1da177e4
LT		 5256 } else
5257 return -EINVAL;
5258 }
5259
5260 if (enable || disable) {
83f34724
HMH		 5261 status = video_outputsw_get();
5262 if (status < 0)
5263 return status;
5264 res = video_outputsw_set((status & ~disable) | enable);
5265 if (res)
5266 return res;
1da177e4
LT		 5267 }
5268
5269 return 0;
5270}
5271
a5763f22
HMH		 5272static struct ibm_struct video_driver_data = {
5273 .name = "video",
5274 .read = video_read,
5275 .write = video_write,
5276 .exit = video_exit,
5277};
5278
d7c1d17d
HMH		 5279#endif /* CONFIG_THINKPAD_ACPI_VIDEO */
5280
bb28f3d5
PR		 5281/*************************************************************************
5282 * Keyboard backlight subdriver
5283 */
5284
c685e20d
HG		 5285static enum led_brightness kbdlight_brightness;
5286static DEFINE_MUTEX(kbdlight_mutex);
5287
bb28f3d5
PR		 5288static int kbdlight_set_level(int level)
5289{
c685e20d
HG		 5290 int ret = 0;
5291
bb28f3d5
PR		 5292 if (!hkey_handle)
5293 return -ENXIO;
5294
c685e20d
HG		 5295 mutex_lock(&kbdlight_mutex);
5296
bb28f3d5 5297 if (!acpi_evalf(hkey_handle, NULL, "MLCS", "dd", level))
c685e20d
HG		 5298 ret = -EIO;
5299 else
5300 kbdlight_brightness = level;
bb28f3d5 5301
c685e20d
HG		 5302 mutex_unlock(&kbdlight_mutex);
5303
5304 return ret;
bb28f3d5
PR		 5305}
5306
5307static int kbdlight_get_level(void)
5308{
5309 int status = 0;
5310
5311 if (!hkey_handle)
5312 return -ENXIO;
5313
5314 if (!acpi_evalf(hkey_handle, &status, "MLCG", "dd", 0))
5315 return -EIO;
5316
5317 if (status < 0)
5318 return status;
5319
5320 return status & 0x3;
5321}
5322
5323static bool kbdlight_is_supported(void)
5324{
5325 int status = 0;
5326
5327 if (!hkey_handle)
5328 return false;
5329
5330 if (!acpi_has_method(hkey_handle, "MLCG")) {
5331 vdbg_printk(TPACPI_DBG_INIT, "kbdlight MLCG is unavailable\n");
5332 return false;
5333 }
5334
5335 if (!acpi_evalf(hkey_handle, &status, "MLCG", "qdd", 0)) {
5336 vdbg_printk(TPACPI_DBG_INIT, "kbdlight MLCG failed\n");
5337 return false;
5338 }
5339
5340 if (status < 0) {
5341 vdbg_printk(TPACPI_DBG_INIT, "kbdlight MLCG err: %d\n", status);
5342 return false;
5343 }
5344
5345 vdbg_printk(TPACPI_DBG_INIT, "kbdlight MLCG returned 0x%x\n", status);
5346 /*
5347 * Guessed test for keyboard backlight:
5348 *
5349 * Machines with backlight keyboard return:
5350 * b010100000010000000XX - ThinkPad X1 Carbon 3rd
5351 * b110100010010000000XX - ThinkPad x230
5352 * b010100000010000000XX - ThinkPad x240
5353 * b010100000010000000XX - ThinkPad W541
5354 * (XX is current backlight level)
5355 *
5356 * Machines without backlight keyboard return:
5357 * b10100001000000000000 - ThinkPad x230
5358 * b10110001000000000000 - ThinkPad E430
5359 * b00000000000000000000 - ThinkPad E450
5360 *
5361 * Candidate BITs for detection test (XOR):
5362 * b01000000001000000000
5363 * ^
5364 */
5365 return status & BIT(9);
5366}
5367
86ec0c2c 5368static int kbdlight_sysfs_set(struct led_classdev *led_cdev,
bb28f3d5
PR		 5369 enum led_brightness brightness)
5370{
86ec0c2c 5371 return kbdlight_set_level(brightness);
bb28f3d5
PR		 5372}
5373
5374static enum led_brightness kbdlight_sysfs_get(struct led_classdev *led_cdev)
5375{
5376 int level;
5377
5378 level = kbdlight_get_level();
5379 if (level < 0)
5380 return 0;
5381
5382 return level;
5383}
5384
5385static struct tpacpi_led_classdev tpacpi_led_kbdlight = {
5386 .led_classdev = {
5387 .name = "tpacpi::kbd_backlight",
5388 .max_brightness = 2,
c685e20d 5389 .flags = LED_BRIGHT_HW_CHANGED,
86ec0c2c 5390 .brightness_set_blocking = &kbdlight_sysfs_set,
bb28f3d5 5391 .brightness_get = &kbdlight_sysfs_get,
bb28f3d5
PR		 5392 }
5393};
5394
5395static int __init kbdlight_init(struct ibm_init_struct *iibm)
5396{
5397 int rc;
5398
5399 vdbg_printk(TPACPI_DBG_INIT, "initializing kbdlight subdriver\n");
5400
5401 TPACPI_ACPIHANDLE_INIT(hkey);
bb28f3d5
PR		 5402
5403 if (!kbdlight_is_supported()) {
5404 tp_features.kbdlight = 0;
5405 vdbg_printk(TPACPI_DBG_INIT, "kbdlight is unsupported\n");
5406 return 1;
5407 }
5408
c685e20d 5409 kbdlight_brightness = kbdlight_sysfs_get(NULL);
bb28f3d5
PR		 5410 tp_features.kbdlight = 1;
5411
5412 rc = led_classdev_register(&tpacpi_pdev->dev,
5413 &tpacpi_led_kbdlight.led_classdev);
5414 if (rc < 0) {
5415 tp_features.kbdlight = 0;
5416 return rc;
5417 }
5418
c685e20d
HG		 5419 tpacpi_hotkey_driver_mask_set(hotkey_driver_mask |
5420 TP_ACPI_HKEY_KBD_LIGHT_MASK);
bb28f3d5
PR		 5421 return 0;
5422}
5423
5424static void kbdlight_exit(void)
5425{
5426 if (tp_features.kbdlight)
5427 led_classdev_unregister(&tpacpi_led_kbdlight.led_classdev);
bb28f3d5
PR		 5428}
5429
afcedebc
MTT		 5430static int kbdlight_set_level_and_update(int level)
5431{
5432 int ret;
5433 struct led_classdev *led_cdev;
5434
5435 ret = kbdlight_set_level(level);
5436 led_cdev = &tpacpi_led_kbdlight.led_classdev;
5437
5438 if (ret == 0 && !(led_cdev->flags & LED_SUSPENDED))
5439 led_cdev->brightness = level;
5440
5441 return ret;
5442}
5443
bb28f3d5
PR		 5444static int kbdlight_read(struct seq_file *m)
5445{
5446 int level;
5447
5448 if (!tp_features.kbdlight) {
5449 seq_printf(m, "status:\t\tnot supported\n");
5450 } else {
5451 level = kbdlight_get_level();
5452 if (level < 0)
5453 seq_printf(m, "status:\t\terror %d\n", level);
5454 else
5455 seq_printf(m, "status:\t\t%d\n", level);
5456 seq_printf(m, "commands:\t0, 1, 2\n");
5457 }
5458
5459 return 0;
5460}
5461
5462static int kbdlight_write(char *buf)
5463{
5464 char *cmd;
5465 int level = -1;
5466
5467 if (!tp_features.kbdlight)
5468 return -ENODEV;
5469
5470 while ((cmd = next_cmd(&buf))) {
5471 if (strlencmp(cmd, "0") == 0)
5472 level = 0;
5473 else if (strlencmp(cmd, "1") == 0)
5474 level = 1;
5475 else if (strlencmp(cmd, "2") == 0)
5476 level = 2;
5477 else
5478 return -EINVAL;
5479 }
5480
5481 if (level == -1)
5482 return -EINVAL;
5483
afcedebc
MTT		 5484 return kbdlight_set_level_and_update(level);
5485}
5486
5487static void kbdlight_suspend(void)
5488{
5489 struct led_classdev *led_cdev;
5490
5491 if (!tp_features.kbdlight)
5492 return;
5493
5494 led_cdev = &tpacpi_led_kbdlight.led_classdev;
5495 led_update_brightness(led_cdev);
5496 led_classdev_suspend(led_cdev);
5497}
5498
5499static void kbdlight_resume(void)
5500{
5501 if (!tp_features.kbdlight)
5502 return;
5503
5504 led_classdev_resume(&tpacpi_led_kbdlight.led_classdev);
bb28f3d5
PR		 5505}
5506
5507static struct ibm_struct kbdlight_driver_data = {
5508 .name = "kbdlight",
5509 .read = kbdlight_read,
5510 .write = kbdlight_write,
afcedebc
MTT		 5511 .suspend = kbdlight_suspend,
5512 .resume = kbdlight_resume,
bb28f3d5
PR		 5513 .exit = kbdlight_exit,
5514};
5515
56b6aeb0
HMH		 5516/*************************************************************************
5517 * Light (thinklight) subdriver
5518 */
1da177e4 5519
e0c7dfe7
HMH		 5520TPACPI_HANDLE(lght, root, "\\LGHT"); /* A21e, A2xm/p, T20-22, X20-21 */
5521TPACPI_HANDLE(ledb, ec, "LEDB"); /* G4x */
56b6aeb0 5522
4fa6811b
HMH		 5523static int light_get_status(void)
5524{
5525 int status = 0;
5526
5527 if (tp_features.light_status) {
5528 if (!acpi_evalf(ec_handle, &status, "KBLT", "d"))
5529 return -EIO;
5530 return (!!status);
5531 }
5532
5533 return -ENXIO;
5534}
5535
5536static int light_set_status(int status)
5537{
5538 int rc;
5539
5540 if (tp_features.light) {
5541 if (cmos_handle) {
5542 rc = acpi_evalf(cmos_handle, NULL, NULL, "vd",
72a979f0 5543 (status) ?
4fa6811b
HMH		 5544 TP_CMOS_THINKLIGHT_ON :
5545 TP_CMOS_THINKLIGHT_OFF);
5546 } else {
5547 rc = acpi_evalf(lght_handle, NULL, NULL, "vd",
72a979f0 5548 (status) ? 1 : 0);
4fa6811b 5549 }
72a979f0 5550 return (rc) ? 0 : -EIO;
4fa6811b
HMH		 5551 }
5552
5553 return -ENXIO;
5554}
5555
86ec0c2c 5556static int light_sysfs_set(struct led_classdev *led_cdev,
e306501d
HMH		 5557 enum led_brightness brightness)
5558{
86ec0c2c
HG		 5559 return light_set_status((brightness != LED_OFF) ?
5560 TPACPI_LED_ON : TPACPI_LED_OFF);
e306501d
HMH		 5561}
5562
5563static enum led_brightness light_sysfs_get(struct led_classdev *led_cdev)
5564{
72a979f0 5565 return (light_get_status() == 1) ? LED_FULL : LED_OFF;
e306501d
HMH		 5566}
5567
5568static struct tpacpi_led_classdev tpacpi_led_thinklight = {
5569 .led_classdev = {
5570 .name = "tpacpi::thinklight",
86ec0c2c 5571 .brightness_set_blocking = &light_sysfs_set,
e306501d
HMH		 5572 .brightness_get = &light_sysfs_get,
5573 }
5574};
5575
a5763f22 5576static int __init light_init(struct ibm_init_struct *iibm)
1da177e4 5577{
9c0a76e1 5578 int rc;
e306501d 5579
fe08bc4b
HMH		 5580 vdbg_printk(TPACPI_DBG_INIT, "initializing light subdriver\n");
5581
e28393c0
HMH		 5582 if (tpacpi_is_ibm()) {
5583 TPACPI_ACPIHANDLE_INIT(ledb);
5584 TPACPI_ACPIHANDLE_INIT(lght);
5585 }
e0c7dfe7 5586 TPACPI_ACPIHANDLE_INIT(cmos);
5fba344c 5587
78f81cc4 5588 /* light not supported on 570, 600e/x, 770e, 770x, G4x, R30, R31 */
d8fd94d9 5589 tp_features.light = (cmos_handle || lght_handle) && !ledb_handle;
78f81cc4 5590
d8fd94d9 5591 if (tp_features.light)
78f81cc4
BD		 5592 /* light status not supported on
5593 570, 600e/x, 770e, 770x, G4x, R30, R31, R32, X20 */
d8fd94d9
HMH		 5594 tp_features.light_status =
5595 acpi_evalf(ec_handle, NULL, "KBLT", "qv");
1da177e4 5596
9c0a76e1
HMH		 5597 vdbg_printk(TPACPI_DBG_INIT, "light is %s, light status is %s\n",
5598 str_supported(tp_features.light),
5599 str_supported(tp_features.light_status));
fe08bc4b 5600
9c0a76e1
HMH		 5601 if (!tp_features.light)
5602 return 1;
5603
5604 rc = led_classdev_register(&tpacpi_pdev->dev,
5605 &tpacpi_led_thinklight.led_classdev);
e306501d
HMH		 5606
5607 if (rc < 0) {
5608 tp_features.light = 0;
5609 tp_features.light_status = 0;
9c0a76e1
HMH		 5610 } else {
5611 rc = 0;
e306501d 5612 }
9c0a76e1 5613
e306501d
HMH		 5614 return rc;
5615}
5616
5617static void light_exit(void)
5618{
5619 led_classdev_unregister(&tpacpi_led_thinklight.led_classdev);
1da177e4
LT		 5620}
5621
887965e6 5622static int light_read(struct seq_file *m)
1da177e4 5623{
4fa6811b 5624 int status;
1da177e4 5625
d8fd94d9 5626 if (!tp_features.light) {
887965e6 5627 seq_printf(m, "status:\t\tnot supported\n");
d8fd94d9 5628 } else if (!tp_features.light_status) {
887965e6
AD		 5629 seq_printf(m, "status:\t\tunknown\n");
5630 seq_printf(m, "commands:\ton, off\n");
78f81cc4 5631 } else {
4fa6811b
HMH		 5632 status = light_get_status();
5633 if (status < 0)
5634 return status;
887965e6
AD		 5635 seq_printf(m, "status:\t\t%s\n", onoff(status, 0));
5636 seq_printf(m, "commands:\ton, off\n");
78f81cc4 5637 }
1da177e4 5638
887965e6 5639 return 0;
1da177e4
LT		 5640}
5641
78f81cc4 5642static int light_write(char *buf)
1da177e4 5643{
1da177e4 5644 char *cmd;
4fa6811b 5645 int newstatus = 0;
78f81cc4 5646
d8fd94d9 5647 if (!tp_features.light)
78f81cc4
BD		 5648 return -ENODEV;
5649
1da177e4
LT		 5650 while ((cmd = next_cmd(&buf))) {
5651 if (strlencmp(cmd, "on") == 0) {
4fa6811b 5652 newstatus = 1;
1da177e4 5653 } else if (strlencmp(cmd, "off") == 0) {
4fa6811b 5654 newstatus = 0;
1da177e4
LT		 5655 } else
5656 return -EINVAL;
1da177e4
LT		 5657 }
5658
4fa6811b 5659 return light_set_status(newstatus);
1da177e4
LT		 5660}
5661
a5763f22
HMH		 5662static struct ibm_struct light_driver_data = {
5663 .name = "light",
5664 .read = light_read,
5665 .write = light_write,
e306501d 5666 .exit = light_exit,
a5763f22
HMH		 5667};
5668
56b6aeb0
HMH		 5669/*************************************************************************
5670 * CMOS subdriver
5671 */
5672
b616004c
HMH		 5673/* sysfs cmos_command -------------------------------------------------- */
5674static ssize_t cmos_command_store(struct device *dev,
5675 struct device_attribute *attr,
5676 const char *buf, size_t count)
5677{
5678 unsigned long cmos_cmd;
5679 int res;
5680
5681 if (parse_strtoul(buf, 21, &cmos_cmd))
5682 return -EINVAL;
5683
5684 res = issue_thinkpad_cmos_command(cmos_cmd);
72a979f0 5685 return (res) ? res : count;
b616004c
HMH		 5686}
5687
b4dd04ac 5688static DEVICE_ATTR_WO(cmos_command);
b616004c
HMH		 5689
5690/* --------------------------------------------------------------------- */
5691
a5763f22 5692static int __init cmos_init(struct ibm_init_struct *iibm)
5fba344c 5693{
b616004c
HMH		 5694 int res;
5695
fe08bc4b
HMH		 5696 vdbg_printk(TPACPI_DBG_INIT,
5697 "initializing cmos commands subdriver\n");
5698
e0c7dfe7 5699 TPACPI_ACPIHANDLE_INIT(cmos);
5fba344c 5700
fe08bc4b
HMH		 5701 vdbg_printk(TPACPI_DBG_INIT, "cmos commands are %s\n",
5702 str_supported(cmos_handle != NULL));
b616004c
HMH		 5703
5704 res = device_create_file(&tpacpi_pdev->dev, &dev_attr_cmos_command);
5705 if (res)
5706 return res;
5707
72a979f0 5708 return (cmos_handle) ? 0 : 1;
5fba344c
HMH		 5709}
5710
b616004c
HMH		 5711static void cmos_exit(void)
5712{
5713 device_remove_file(&tpacpi_pdev->dev, &dev_attr_cmos_command);
5714}
5715
887965e6 5716static int cmos_read(struct seq_file *m)
1da177e4 5717{
78f81cc4
BD		 5718 /* cmos not supported on 570, 600e/x, 770e, 770x, A21e, A2xm/p,
5719 R30, R31, T20-22, X20-21 */
1da177e4 5720 if (!cmos_handle)
887965e6 5721 seq_printf(m, "status:\t\tnot supported\n");
1da177e4 5722 else {
887965e6
AD		 5723 seq_printf(m, "status:\t\tsupported\n");
5724 seq_printf(m, "commands:\t<cmd> (<cmd> is 0-21)\n");
1da177e4
LT		 5725 }
5726
887965e6 5727 return 0;
1da177e4
LT		 5728}
5729
78f81cc4 5730static int cmos_write(char *buf)
1da177e4
LT		 5731{
5732 char *cmd;
c9bea99c 5733 int cmos_cmd, res;
1da177e4
LT		 5734
5735 while ((cmd = next_cmd(&buf))) {
78f81cc4
BD		 5736 if (sscanf(cmd, "%u", &cmos_cmd) == 1 &&
5737 cmos_cmd >= 0 && cmos_cmd <= 21) {
1da177e4
LT		 5738 /* cmos_cmd set */
5739 } else
5740 return -EINVAL;
5741
c9bea99c
HMH		 5742 res = issue_thinkpad_cmos_command(cmos_cmd);
5743 if (res)
5744 return res;
1da177e4
LT		 5745 }
5746
5747 return 0;
78f81cc4
BD		 5748}
5749
a5763f22
HMH		 5750static struct ibm_struct cmos_driver_data = {
5751 .name = "cmos",
5752 .read = cmos_read,
5753 .write = cmos_write,
b616004c 5754 .exit = cmos_exit,
a5763f22 5755};
56b6aeb0
HMH		 5756
5757/*************************************************************************
5758 * LED subdriver
5759 */
5760
f74a27d4
HMH		 5761enum led_access_mode {
5762 TPACPI_LED_NONE = 0,
5763 TPACPI_LED_570, /* 570 */
5764 TPACPI_LED_OLD, /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20-21 */
5765 TPACPI_LED_NEW, /* all others */
5766};
5767
5768enum { /* For TPACPI_LED_OLD */
5769 TPACPI_LED_EC_HLCL = 0x0c, /* EC reg to get led to power on */
5770 TPACPI_LED_EC_HLBL = 0x0d, /* EC reg to blink a lit led */
5771 TPACPI_LED_EC_HLMS = 0x0e, /* EC reg to select led to command */
5772};
5773
9a8e1738 5774static enum led_access_mode led_supported;
78f81cc4 5775
2cbb5c8f 5776static acpi_handle led_handle;
56b6aeb0 5777
f21179a4 5778#define TPACPI_LED_NUMLEDS 16
af116101
HMH		 5779static struct tpacpi_led_classdev *tpacpi_leds;
5780static enum led_status_t tpacpi_led_state_cache[TPACPI_LED_NUMLEDS];
e3aa51fe 5781static const char * const tpacpi_led_names[TPACPI_LED_NUMLEDS] = {
af116101
HMH		 5782 /* there's a limit of 19 chars + NULL before 2.6.26 */
5783 "tpacpi::power",
5784 "tpacpi:orange:batt",
5785 "tpacpi:green:batt",
5786 "tpacpi::dock_active",
5787 "tpacpi::bay_active",
5788 "tpacpi::dock_batt",
5789 "tpacpi::unknown_led",
5790 "tpacpi::standby",
f21179a4
HMH		 5791 "tpacpi::dock_status1",
5792 "tpacpi::dock_status2",
5793 "tpacpi::unknown_led2",
5794 "tpacpi::unknown_led3",
5795 "tpacpi::thinkvantage",
af116101 5796};
f21179a4 5797#define TPACPI_SAFE_LEDS 0x1081U
a4d5effc
HMH		 5798
5799static inline bool tpacpi_is_led_restricted(const unsigned int led)
5800{
5801#ifdef CONFIG_THINKPAD_ACPI_UNSAFE_LEDS
5802 return false;
5803#else
f21179a4 5804 return (1U & (TPACPI_SAFE_LEDS >> led)) == 0;
a4d5effc
HMH		 5805#endif
5806}
af116101 5807
24e45bbe 5808static int led_get_status(const unsigned int led)
4fa6811b
HMH		 5809{
5810 int status;
af116101 5811 enum led_status_t led_s;
4fa6811b
HMH		 5812
5813 switch (led_supported) {
5814 case TPACPI_LED_570:
5815 if (!acpi_evalf(ec_handle,
5816 &status, "GLED", "dd", 1 << led))
5817 return -EIO;
72a979f0 5818 led_s = (status == 0) ?
4fa6811b 5819 TPACPI_LED_OFF :
72a979f0 5820 ((status == 1) ?
4fa6811b
HMH		 5821 TPACPI_LED_ON :
5822 TPACPI_LED_BLINK);
af116101
HMH		 5823 tpacpi_led_state_cache[led] = led_s;
5824 return led_s;
4fa6811b
HMH		 5825 default:
5826 return -ENXIO;
5827 }
5828
5829 /* not reached */
5830}
5831
24e45bbe
HMH		 5832static int led_set_status(const unsigned int led,
5833 const enum led_status_t ledstatus)
4fa6811b
HMH		 5834{
5835 /* off, on, blink. Index is led_status_t */
24e45bbe
HMH		 5836 static const unsigned int led_sled_arg1[] = { 0, 1, 3 };
5837 static const unsigned int led_led_arg1[] = { 0, 0x80, 0xc0 };
4fa6811b
HMH		 5838
5839 int rc = 0;
5840
5841 switch (led_supported) {
5842 case TPACPI_LED_570:
24e45bbe 5843 /* 570 */
a4d5effc 5844 if (unlikely(led > 7))
24e45bbe 5845 return -EINVAL;
a4d5effc
HMH		 5846 if (unlikely(tpacpi_is_led_restricted(led)))
5847 return -EPERM;
24e45bbe
HMH		 5848 if (!acpi_evalf(led_handle, NULL, NULL, "vdd",
5849 (1 << led), led_sled_arg1[ledstatus]))
5850 rc = -EIO;
5851 break;
4fa6811b 5852 case TPACPI_LED_OLD:
24e45bbe 5853 /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20 */
a4d5effc 5854 if (unlikely(led > 7))
24e45bbe 5855 return -EINVAL;
a4d5effc
HMH		 5856 if (unlikely(tpacpi_is_led_restricted(led)))
5857 return -EPERM;
24e45bbe
HMH		 5858 rc = ec_write(TPACPI_LED_EC_HLMS, (1 << led));
5859 if (rc >= 0)
5860 rc = ec_write(TPACPI_LED_EC_HLBL,
5861 (ledstatus == TPACPI_LED_BLINK) << led);
5862 if (rc >= 0)
5863 rc = ec_write(TPACPI_LED_EC_HLCL,
5864 (ledstatus != TPACPI_LED_OFF) << led);
5865 break;
4fa6811b 5866 case TPACPI_LED_NEW:
24e45bbe 5867 /* all others */
a4d5effc
HMH		 5868 if (unlikely(led >= TPACPI_LED_NUMLEDS))
5869 return -EINVAL;
5870 if (unlikely(tpacpi_is_led_restricted(led)))
5871 return -EPERM;
24e45bbe
HMH		 5872 if (!acpi_evalf(led_handle, NULL, NULL, "vdd",
5873 led, led_led_arg1[ledstatus]))
5874 rc = -EIO;
5875 break;
4fa6811b
HMH		 5876 default:
5877 rc = -ENXIO;
5878 }
5879
af116101
HMH		 5880 if (!rc)
5881 tpacpi_led_state_cache[led] = ledstatus;
5882
5883 return rc;
5884}
5885
86ec0c2c 5886static int led_sysfs_set(struct led_classdev *led_cdev,
af116101
HMH		 5887 enum led_brightness brightness)
5888{
5889 struct tpacpi_led_classdev *data = container_of(led_cdev,
5890 struct tpacpi_led_classdev, led_classdev);
86ec0c2c 5891 enum led_status_t new_state;
af116101 5892
75bd3bf2 5893 if (brightness == LED_OFF)
86ec0c2c 5894 new_state = TPACPI_LED_OFF;
75bd3bf2 5895 else if (tpacpi_led_state_cache[data->led] != TPACPI_LED_BLINK)
86ec0c2c 5896 new_state = TPACPI_LED_ON;
75bd3bf2 5897 else
86ec0c2c 5898 new_state = TPACPI_LED_BLINK;
75bd3bf2 5899
86ec0c2c 5900 return led_set_status(data->led, new_state);
af116101
HMH		 5901}
5902
5903static int led_sysfs_blink_set(struct led_classdev *led_cdev,
5904 unsigned long *delay_on, unsigned long *delay_off)
5905{
5906 struct tpacpi_led_classdev *data = container_of(led_cdev,
5907 struct tpacpi_led_classdev, led_classdev);
5908
5909 /* Can we choose the flash rate? */
5910 if (*delay_on == 0 && *delay_off == 0) {
5911 /* yes. set them to the hardware blink rate (1 Hz) */
5912 *delay_on = 500; /* ms */
5913 *delay_off = 500; /* ms */
5914 } else if ((*delay_on != 500) || (*delay_off != 500))
5915 return -EINVAL;
5916
86ec0c2c 5917 return led_set_status(data->led, TPACPI_LED_BLINK);
af116101
HMH		 5918}
5919
5920static enum led_brightness led_sysfs_get(struct led_classdev *led_cdev)
5921{
5922 int rc;
5923
5924 struct tpacpi_led_classdev *data = container_of(led_cdev,
5925 struct tpacpi_led_classdev, led_classdev);
5926
5927 rc = led_get_status(data->led);
5928
5929 if (rc == TPACPI_LED_OFF || rc < 0)
5930 rc = LED_OFF; /* no error handling in led class :( */
5931 else
5932 rc = LED_FULL;
5933
4fa6811b
HMH		 5934 return rc;
5935}
5936
af116101
HMH		 5937static void led_exit(void)
5938{
5939 unsigned int i;
5940
5941 for (i = 0; i < TPACPI_LED_NUMLEDS; i++) {
5942 if (tpacpi_leds[i].led_classdev.name)
5943 led_classdev_unregister(&tpacpi_leds[i].led_classdev);
5944 }
5945
5946 kfree(tpacpi_leds);
af116101
HMH		 5947}
5948
a4d5effc
HMH		 5949static int __init tpacpi_init_led(unsigned int led)
5950{
5951 int rc;
5952
5953 tpacpi_leds[led].led = led;
5954
f21179a4
HMH		 5955 /* LEDs with no name don't get registered */
5956 if (!tpacpi_led_names[led])
5957 return 0;
5958
86ec0c2c 5959 tpacpi_leds[led].led_classdev.brightness_set_blocking = &led_sysfs_set;
a4d5effc
HMH		 5960 tpacpi_leds[led].led_classdev.blink_set = &led_sysfs_blink_set;
5961 if (led_supported == TPACPI_LED_570)
5962 tpacpi_leds[led].led_classdev.brightness_get =
5963 &led_sysfs_get;
5964
5965 tpacpi_leds[led].led_classdev.name = tpacpi_led_names[led];
5966
a4d5effc
HMH		 5967 rc = led_classdev_register(&tpacpi_pdev->dev,
5968 &tpacpi_leds[led].led_classdev);
5969 if (rc < 0)
5970 tpacpi_leds[led].led_classdev.name = NULL;
5971
5972 return rc;
5973}
5974
f21179a4
HMH		 5975static const struct tpacpi_quirk led_useful_qtable[] __initconst = {
5976 TPACPI_Q_IBM('1', 'E', 0x009f), /* A30 */
5977 TPACPI_Q_IBM('1', 'N', 0x009f), /* A31 */
5978 TPACPI_Q_IBM('1', 'G', 0x009f), /* A31 */
5979
5980 TPACPI_Q_IBM('1', 'I', 0x0097), /* T30 */
5981 TPACPI_Q_IBM('1', 'R', 0x0097), /* T40, T41, T42, R50, R51 */
5982 TPACPI_Q_IBM('7', '0', 0x0097), /* T43, R52 */
5983 TPACPI_Q_IBM('1', 'Y', 0x0097), /* T43 */
5984 TPACPI_Q_IBM('1', 'W', 0x0097), /* R50e */
5985 TPACPI_Q_IBM('1', 'V', 0x0097), /* R51 */
5986 TPACPI_Q_IBM('7', '8', 0x0097), /* R51e */
5987 TPACPI_Q_IBM('7', '6', 0x0097), /* R52 */
5988
5989 TPACPI_Q_IBM('1', 'K', 0x00bf), /* X30 */
5990 TPACPI_Q_IBM('1', 'Q', 0x00bf), /* X31, X32 */
5991 TPACPI_Q_IBM('1', 'U', 0x00bf), /* X40 */
5992 TPACPI_Q_IBM('7', '4', 0x00bf), /* X41 */
5993 TPACPI_Q_IBM('7', '5', 0x00bf), /* X41t */
5994
5995 TPACPI_Q_IBM('7', '9', 0x1f97), /* T60 (1) */
5996 TPACPI_Q_IBM('7', '7', 0x1f97), /* Z60* (1) */
5997 TPACPI_Q_IBM('7', 'F', 0x1f97), /* Z61* (1) */
5998 TPACPI_Q_IBM('7', 'B', 0x1fb7), /* X60 (1) */
5999
6000 /* (1) - may have excess leds enabled on MSB */
6001
6002 /* Defaults (order matters, keep last, don't reorder!) */
6003 { /* Lenovo */
6004 .vendor = PCI_VENDOR_ID_LENOVO,
6005 .bios = TPACPI_MATCH_ANY, .ec = TPACPI_MATCH_ANY,
6006 .quirks = 0x1fffU,
6007 },
6008 { /* IBM ThinkPads with no EC version string */
6009 .vendor = PCI_VENDOR_ID_IBM,
6010 .bios = TPACPI_MATCH_ANY, .ec = TPACPI_MATCH_UNKNOWN,
6011 .quirks = 0x00ffU,
6012 },
6013 { /* IBM ThinkPads with EC version string */
6014 .vendor = PCI_VENDOR_ID_IBM,
6015 .bios = TPACPI_MATCH_ANY, .ec = TPACPI_MATCH_ANY,
6016 .quirks = 0x00bfU,
6017 },
6018};
6019
6020#undef TPACPI_LEDQ_IBM
6021#undef TPACPI_LEDQ_LNV
6022
2cbb5c8f
HMH		 6023static enum led_access_mode __init led_init_detect_mode(void)
6024{
6025 acpi_status status;
6026
6027 if (tpacpi_is_ibm()) {
6028 /* 570 */
6029 status = acpi_get_handle(ec_handle, "SLED", &led_handle);
6030 if (ACPI_SUCCESS(status))
6031 return TPACPI_LED_570;
6032
6033 /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20-21 */
6034 status = acpi_get_handle(ec_handle, "SYSL", &led_handle);
6035 if (ACPI_SUCCESS(status))
6036 return TPACPI_LED_OLD;
6037 }
6038
6039 /* most others */
6040 status = acpi_get_handle(ec_handle, "LED", &led_handle);
6041 if (ACPI_SUCCESS(status))
6042 return TPACPI_LED_NEW;
6043
6044 /* R30, R31, and unknown firmwares */
6045 led_handle = NULL;
6046 return TPACPI_LED_NONE;
6047}
6048
a5763f22 6049static int __init led_init(struct ibm_init_struct *iibm)
78f81cc4 6050{
af116101
HMH		 6051 unsigned int i;
6052 int rc;
f21179a4 6053 unsigned long useful_leds;
af116101 6054
fe08bc4b
HMH		 6055 vdbg_printk(TPACPI_DBG_INIT, "initializing LED subdriver\n");
6056
2cbb5c8f 6057 led_supported = led_init_detect_mode();
78f81cc4 6058
fcb44e12
AL		 6059 if (led_supported != TPACPI_LED_NONE) {
6060 useful_leds = tpacpi_check_quirks(led_useful_qtable,
6061 ARRAY_SIZE(led_useful_qtable));
6062
6063 if (!useful_leds) {
6064 led_handle = NULL;
6065 led_supported = TPACPI_LED_NONE;
6066 }
6067 }
6068
fe08bc4b
HMH		 6069 vdbg_printk(TPACPI_DBG_INIT, "LED commands are %s, mode %d\n",
6070 str_supported(led_supported), led_supported);
6071
f21179a4
HMH		 6072 if (led_supported == TPACPI_LED_NONE)
6073 return 1;
6074
af116101
HMH		 6075 tpacpi_leds = kzalloc(sizeof(*tpacpi_leds) * TPACPI_LED_NUMLEDS,
6076 GFP_KERNEL);
6077 if (!tpacpi_leds) {
0978e012 6078 pr_err("Out of memory for LED data\n");
af116101
HMH		 6079 return -ENOMEM;
6080 }
6081
6082 for (i = 0; i < TPACPI_LED_NUMLEDS; i++) {
edf2d778
AL		 6083 tpacpi_leds[i].led = -1;
6084
f21179a4
HMH		 6085 if (!tpacpi_is_led_restricted(i) &&
6086 test_bit(i, &useful_leds)) {
a4d5effc
HMH		 6087 rc = tpacpi_init_led(i);
6088 if (rc < 0) {
6089 led_exit();
6090 return rc;
6091 }
af116101
HMH		 6092 }
6093 }
6094
a4d5effc 6095#ifdef CONFIG_THINKPAD_ACPI_UNSAFE_LEDS
5cac62ac 6096 pr_notice("warning: userspace override of important firmware LEDs is enabled\n");
a4d5effc 6097#endif
f21179a4 6098 return 0;
78f81cc4
BD		 6099}
6100
4fa6811b
HMH		 6101#define str_led_status(s) \
6102 ((s) == TPACPI_LED_OFF ? "off" : \
6103 ((s) == TPACPI_LED_ON ? "on" : "blinking"))
78f81cc4 6104
887965e6 6105static int led_read(struct seq_file *m)
1da177e4 6106{
78f81cc4 6107 if (!led_supported) {
887965e6
AD		 6108 seq_printf(m, "status:\t\tnot supported\n");
6109 return 0;
78f81cc4 6110 }
887965e6 6111 seq_printf(m, "status:\t\tsupported\n");
78f81cc4 6112
efa27145 6113 if (led_supported == TPACPI_LED_570) {
78f81cc4
BD		 6114 /* 570 */
6115 int i, status;
6116 for (i = 0; i < 8; i++) {
4fa6811b
HMH		 6117 status = led_get_status(i);
6118 if (status < 0)
78f81cc4 6119 return -EIO;
887965e6 6120 seq_printf(m, "%d:\t\t%s\n",
4fa6811b 6121 i, str_led_status(status));
78f81cc4
BD		 6122 }
6123 }
6124
5cac62ac 6125 seq_printf(m, "commands:\t<led> on, <led> off, <led> blink (<led> is 0-15)\n");
1da177e4 6126
887965e6 6127 return 0;
1da177e4
LT		 6128}
6129
78f81cc4 6130static int led_write(char *buf)
1da177e4
LT		 6131{
6132 char *cmd;
4fa6811b
HMH		 6133 int led, rc;
6134 enum led_status_t s;
78f81cc4
BD		 6135
6136 if (!led_supported)
6137 return -ENODEV;
1da177e4
LT		 6138
6139 while ((cmd = next_cmd(&buf))) {
edf2d778 6140 if (sscanf(cmd, "%d", &led) != 1)
1da177e4
LT		 6141 return -EINVAL;
6142
edf2d778
AL		 6143 if (led < 0 || led > (TPACPI_LED_NUMLEDS - 1) ||
6144 tpacpi_leds[led].led < 0)
6145 return -ENODEV;
6146
78f81cc4 6147 if (strstr(cmd, "off")) {
4fa6811b 6148 s = TPACPI_LED_OFF;
1da177e4 6149 } else if (strstr(cmd, "on")) {
4fa6811b 6150 s = TPACPI_LED_ON;
78f81cc4 6151 } else if (strstr(cmd, "blink")) {
4fa6811b 6152 s = TPACPI_LED_BLINK;
78f81cc4 6153 } else {
4fa6811b 6154 return -EINVAL;
78f81cc4 6155 }
4fa6811b
HMH		 6156
6157 rc = led_set_status(led, s);
6158 if (rc < 0)
6159 return rc;
78f81cc4
BD		 6160 }
6161
6162 return 0;
6163}
6164
a5763f22
HMH		 6165static struct ibm_struct led_driver_data = {
6166 .name = "led",
6167 .read = led_read,
6168 .write = led_write,
af116101 6169 .exit = led_exit,
a5763f22
HMH		 6170};
6171
56b6aeb0
HMH		 6172/*************************************************************************
6173 * Beep subdriver
6174 */
6175
e0c7dfe7 6176TPACPI_HANDLE(beep, ec, "BEEP"); /* all except R30, R31 */
56b6aeb0 6177
60201732
HMH		 6178#define TPACPI_BEEP_Q1 0x0001
6179
6180static const struct tpacpi_quirk beep_quirk_table[] __initconst = {
6181 TPACPI_Q_IBM('I', 'M', TPACPI_BEEP_Q1), /* 570 */
6182 TPACPI_Q_IBM('I', 'U', TPACPI_BEEP_Q1), /* 570E - unverified */
6183};
6184
a5763f22 6185static int __init beep_init(struct ibm_init_struct *iibm)
5fba344c 6186{
60201732
HMH		 6187 unsigned long quirks;
6188
fe08bc4b
HMH		 6189 vdbg_printk(TPACPI_DBG_INIT, "initializing beep subdriver\n");
6190
e0c7dfe7 6191 TPACPI_ACPIHANDLE_INIT(beep);
5fba344c 6192
fe08bc4b
HMH		 6193 vdbg_printk(TPACPI_DBG_INIT, "beep is %s\n",
6194 str_supported(beep_handle != NULL));
6195
60201732
HMH		 6196 quirks = tpacpi_check_quirks(beep_quirk_table,
6197 ARRAY_SIZE(beep_quirk_table));
6198
6199 tp_features.beep_needs_two_args = !!(quirks & TPACPI_BEEP_Q1);
6200
72a979f0 6201 return (beep_handle) ? 0 : 1;
5fba344c
HMH		 6202}
6203
887965e6 6204static int beep_read(struct seq_file *m)
78f81cc4 6205{
78f81cc4 6206 if (!beep_handle)
887965e6 6207 seq_printf(m, "status:\t\tnot supported\n");
78f81cc4 6208 else {
887965e6
AD		 6209 seq_printf(m, "status:\t\tsupported\n");
6210 seq_printf(m, "commands:\t<cmd> (<cmd> is 0-17)\n");
78f81cc4
BD		 6211 }
6212
887965e6 6213 return 0;
78f81cc4
BD		 6214}
6215
6216static int beep_write(char *buf)
6217{
6218 char *cmd;
6219 int beep_cmd;
6220
6221 if (!beep_handle)
6222 return -ENODEV;
6223
6224 while ((cmd = next_cmd(&buf))) {
6225 if (sscanf(cmd, "%u", &beep_cmd) == 1 &&
6226 beep_cmd >= 0 && beep_cmd <= 17) {
6227 /* beep_cmd set */
6228 } else
6229 return -EINVAL;
60201732
HMH		 6230 if (tp_features.beep_needs_two_args) {
6231 if (!acpi_evalf(beep_handle, NULL, NULL, "vdd",
6232 beep_cmd, 0))
6233 return -EIO;
6234 } else {
6235 if (!acpi_evalf(beep_handle, NULL, NULL, "vd",
6236 beep_cmd))
6237 return -EIO;
6238 }
78f81cc4
BD		 6239 }
6240
6241 return 0;
6242}
6243
a5763f22
HMH		 6244static struct ibm_struct beep_driver_data = {
6245 .name = "beep",
6246 .read = beep_read,
6247 .write = beep_write,
6248};
6249
56b6aeb0
HMH		 6250/*************************************************************************
6251 * Thermal subdriver
6252 */
78f81cc4 6253
f74a27d4
HMH		 6254enum thermal_access_mode {
6255 TPACPI_THERMAL_NONE = 0, /* No thermal support */
6256 TPACPI_THERMAL_ACPI_TMP07, /* Use ACPI TMP0-7 */
6257 TPACPI_THERMAL_ACPI_UPDT, /* Use ACPI TMP0-7 with UPDT */
6258 TPACPI_THERMAL_TPEC_8, /* Use ACPI EC regs, 8 sensors */
6259 TPACPI_THERMAL_TPEC_16, /* Use ACPI EC regs, 16 sensors */
6260};
6261
6262enum { /* TPACPI_THERMAL_TPEC_* */
6263 TP_EC_THERMAL_TMP0 = 0x78, /* ACPI EC regs TMP 0..7 */
6264 TP_EC_THERMAL_TMP8 = 0xC0, /* ACPI EC regs TMP 8..15 */
6265 TP_EC_THERMAL_TMP_NA = -128, /* ACPI EC sensor not available */
9ebd9e83
HMH		 6266
6267 TPACPI_THERMAL_SENSOR_NA = -128000, /* Sensor not available */
f74a27d4
HMH		 6268};
6269
9ebd9e83 6270
f74a27d4
HMH		 6271#define TPACPI_MAX_THERMAL_SENSORS 16 /* Max thermal sensors supported */
6272struct ibm_thermal_sensors_struct {
6273 s32 temp[TPACPI_MAX_THERMAL_SENSORS];
6274};
6275
a26f878a 6276static enum thermal_access_mode thermal_read_mode;
78f81cc4 6277
b21a15f6
HMH		 6278/* idx is zero-based */
6279static int thermal_get_sensor(int idx, s32 *value)
6280{
6281 int t;
6282 s8 tmp;
6283 char tmpi[5];
6284
6285 t = TP_EC_THERMAL_TMP0;
6286
6287 switch (thermal_read_mode) {
6288#if TPACPI_MAX_THERMAL_SENSORS >= 16
6289 case TPACPI_THERMAL_TPEC_16:
6290 if (idx >= 8 && idx <= 15) {
6291 t = TP_EC_THERMAL_TMP8;
6292 idx -= 8;
6293 }
6294 /* fallthrough */
6295#endif
6296 case TPACPI_THERMAL_TPEC_8:
6297 if (idx <= 7) {
6298 if (!acpi_ec_read(t + idx, &tmp))
6299 return -EIO;
6300 *value = tmp * 1000;
6301 return 0;
6302 }
6303 break;
6304
6305 case TPACPI_THERMAL_ACPI_UPDT:
6306 if (idx <= 7) {
6307 snprintf(tmpi, sizeof(tmpi), "TMP%c", '0' + idx);
6308 if (!acpi_evalf(ec_handle, NULL, "UPDT", "v"))
6309 return -EIO;
6310 if (!acpi_evalf(ec_handle, &t, tmpi, "d"))
6311 return -EIO;
6312 *value = (t - 2732) * 100;
6313 return 0;
6314 }
6315 break;
6316
6317 case TPACPI_THERMAL_ACPI_TMP07:
6318 if (idx <= 7) {
6319 snprintf(tmpi, sizeof(tmpi), "TMP%c", '0' + idx);
6320 if (!acpi_evalf(ec_handle, &t, tmpi, "d"))
6321 return -EIO;
6322 if (t > 127 || t < -127)
6323 t = TP_EC_THERMAL_TMP_NA;
6324 *value = t * 1000;
6325 return 0;
6326 }
6327 break;
6328
6329 case TPACPI_THERMAL_NONE:
6330 default:
6331 return -ENOSYS;
6332 }
6333
6334 return -EINVAL;
6335}
6336
6337static int thermal_get_sensors(struct ibm_thermal_sensors_struct *s)
6338{
6339 int res, i;
6340 int n;
6341
6342 n = 8;
6343 i = 0;
6344
6345 if (!s)
6346 return -EINVAL;
6347
6348 if (thermal_read_mode == TPACPI_THERMAL_TPEC_16)
6349 n = 16;
6350
35ff8b9f 6351 for (i = 0 ; i < n; i++) {
b21a15f6
HMH		 6352 res = thermal_get_sensor(i, &s->temp[i]);
6353 if (res)
6354 return res;
6355 }
6356
6357 return n;
6358}
f74a27d4 6359
9ebd9e83
HMH		 6360static void thermal_dump_all_sensors(void)
6361{
6362 int n, i;
6363 struct ibm_thermal_sensors_struct t;
6364
6365 n = thermal_get_sensors(&t);
6366 if (n <= 0)
6367 return;
6368
0978e012 6369 pr_notice("temperatures (Celsius):");
9ebd9e83
HMH		 6370
6371 for (i = 0; i < n; i++) {
6372 if (t.temp[i] != TPACPI_THERMAL_SENSOR_NA)
0978e012 6373 pr_cont(" %d", (int)(t.temp[i] / 1000));
9ebd9e83 6374 else
0978e012 6375 pr_cont(" N/A");
9ebd9e83
HMH		 6376 }
6377
0978e012 6378 pr_cont("\n");
9ebd9e83
HMH		 6379}
6380
2c37aa4e
HMH		 6381/* sysfs temp##_input -------------------------------------------------- */
6382
6383static ssize_t thermal_temp_input_show(struct device *dev,
6384 struct device_attribute *attr,
6385 char *buf)
6386{
6387 struct sensor_device_attribute *sensor_attr =
6388 to_sensor_dev_attr(attr);
6389 int idx = sensor_attr->index;
6390 s32 value;
6391 int res;
6392
6393 res = thermal_get_sensor(idx, &value);
6394 if (res)
6395 return res;
9ebd9e83 6396 if (value == TPACPI_THERMAL_SENSOR_NA)
2c37aa4e
HMH		 6397 return -ENXIO;
6398
6399 return snprintf(buf, PAGE_SIZE, "%d\n", value);
6400}
6401
6402#define THERMAL_SENSOR_ATTR_TEMP(_idxA, _idxB) \
35ff8b9f
HMH		 6403 SENSOR_ATTR(temp##_idxA##_input, S_IRUGO, \
6404 thermal_temp_input_show, NULL, _idxB)
2c37aa4e
HMH		 6405
6406static struct sensor_device_attribute sensor_dev_attr_thermal_temp_input[] = {
6407 THERMAL_SENSOR_ATTR_TEMP(1, 0),
6408 THERMAL_SENSOR_ATTR_TEMP(2, 1),
6409 THERMAL_SENSOR_ATTR_TEMP(3, 2),
6410 THERMAL_SENSOR_ATTR_TEMP(4, 3),
6411 THERMAL_SENSOR_ATTR_TEMP(5, 4),
6412 THERMAL_SENSOR_ATTR_TEMP(6, 5),
6413 THERMAL_SENSOR_ATTR_TEMP(7, 6),
6414 THERMAL_SENSOR_ATTR_TEMP(8, 7),
6415 THERMAL_SENSOR_ATTR_TEMP(9, 8),
6416 THERMAL_SENSOR_ATTR_TEMP(10, 9),
6417 THERMAL_SENSOR_ATTR_TEMP(11, 10),
6418 THERMAL_SENSOR_ATTR_TEMP(12, 11),
6419 THERMAL_SENSOR_ATTR_TEMP(13, 12),
6420 THERMAL_SENSOR_ATTR_TEMP(14, 13),
6421 THERMAL_SENSOR_ATTR_TEMP(15, 14),
6422 THERMAL_SENSOR_ATTR_TEMP(16, 15),
6423};
6424
6425#define THERMAL_ATTRS(X) \
6426 &sensor_dev_attr_thermal_temp_input[X].dev_attr.attr
6427
6428static struct attribute *thermal_temp_input_attr[] = {
6429 THERMAL_ATTRS(8),
6430 THERMAL_ATTRS(9),
6431 THERMAL_ATTRS(10),
6432 THERMAL_ATTRS(11),
6433 THERMAL_ATTRS(12),
6434 THERMAL_ATTRS(13),
6435 THERMAL_ATTRS(14),
6436 THERMAL_ATTRS(15),
6437 THERMAL_ATTRS(0),
6438 THERMAL_ATTRS(1),
6439 THERMAL_ATTRS(2),
6440 THERMAL_ATTRS(3),
6441 THERMAL_ATTRS(4),
6442 THERMAL_ATTRS(5),
6443 THERMAL_ATTRS(6),
6444 THERMAL_ATTRS(7),
6445 NULL
6446};
6447
6448static const struct attribute_group thermal_temp_input16_group = {
6449 .attrs = thermal_temp_input_attr
6450};
6451
6452static const struct attribute_group thermal_temp_input8_group = {
6453 .attrs = &thermal_temp_input_attr[8]
6454};
6455
6456#undef THERMAL_SENSOR_ATTR_TEMP
6457#undef THERMAL_ATTRS
6458
6459/* --------------------------------------------------------------------- */
6460
a5763f22 6461static int __init thermal_init(struct ibm_init_struct *iibm)
78f81cc4 6462{
60eb0b35
HMH		 6463 u8 t, ta1, ta2;
6464 int i;
5fba344c 6465 int acpi_tmp7;
2c37aa4e 6466 int res;
5fba344c 6467
fe08bc4b
HMH		 6468 vdbg_printk(TPACPI_DBG_INIT, "initializing thermal subdriver\n");
6469
5fba344c 6470 acpi_tmp7 = acpi_evalf(ec_handle, NULL, "TMP7", "qv");
60eb0b35 6471
3d6f99ca 6472 if (thinkpad_id.ec_model) {
60eb0b35
HMH		 6473 /*
6474 * Direct EC access mode: sensors at registers
6475 * 0x78-0x7F, 0xC0-0xC7. Registers return 0x00 for
6476 * non-implemented, thermal sensors return 0x80 when
6477 * not available
6478 */
78f81cc4 6479
60eb0b35
HMH		 6480 ta1 = ta2 = 0;
6481 for (i = 0; i < 8; i++) {
04cc862c 6482 if (acpi_ec_read(TP_EC_THERMAL_TMP0 + i, &t)) {
60eb0b35
HMH		 6483 ta1 |= t;
6484 } else {
6485 ta1 = 0;
6486 break;
6487 }
04cc862c 6488 if (acpi_ec_read(TP_EC_THERMAL_TMP8 + i, &t)) {
60eb0b35
HMH		 6489 ta2 |= t;
6490 } else {
6491 ta1 = 0;
6492 break;
6493 }
6494 }
6495 if (ta1 == 0) {
6496 /* This is sheer paranoia, but we handle it anyway */
6497 if (acpi_tmp7) {
5cac62ac 6498 pr_err("ThinkPad ACPI EC access misbehaving, falling back to ACPI TMPx access mode\n");
efa27145 6499 thermal_read_mode = TPACPI_THERMAL_ACPI_TMP07;
60eb0b35 6500 } else {
5cac62ac 6501 pr_err("ThinkPad ACPI EC access misbehaving, disabling thermal sensors access\n");
efa27145 6502 thermal_read_mode = TPACPI_THERMAL_NONE;
60eb0b35
HMH		 6503 }
6504 } else {
6505 thermal_read_mode =
6506 (ta2 != 0) ?
efa27145 6507 TPACPI_THERMAL_TPEC_16 : TPACPI_THERMAL_TPEC_8;
60eb0b35
HMH		 6508 }
6509 } else if (acpi_tmp7) {
e28393c0
HMH		 6510 if (tpacpi_is_ibm() &&
6511 acpi_evalf(ec_handle, NULL, "UPDT", "qv")) {
a26f878a 6512 /* 600e/x, 770e, 770x */
efa27145 6513 thermal_read_mode = TPACPI_THERMAL_ACPI_UPDT;
a26f878a 6514 } else {
e28393c0 6515 /* IBM/LENOVO DSDT EC.TMPx access, max 8 sensors */
efa27145 6516 thermal_read_mode = TPACPI_THERMAL_ACPI_TMP07;
a26f878a
HMH		 6517 }
6518 } else {
6519 /* temperatures not supported on 570, G4x, R30, R31, R32 */
efa27145 6520 thermal_read_mode = TPACPI_THERMAL_NONE;
a26f878a 6521 }
78f81cc4 6522
fe08bc4b
HMH		 6523 vdbg_printk(TPACPI_DBG_INIT, "thermal is %s, mode %d\n",
6524 str_supported(thermal_read_mode != TPACPI_THERMAL_NONE),
6525 thermal_read_mode);
6526
35ff8b9f 6527 switch (thermal_read_mode) {
2c37aa4e 6528 case TPACPI_THERMAL_TPEC_16:
6b99e356 6529 res = sysfs_create_group(&tpacpi_hwmon->kobj,
2c37aa4e
HMH		 6530 &thermal_temp_input16_group);
6531 if (res)
6532 return res;
6533 break;
6534 case TPACPI_THERMAL_TPEC_8:
6535 case TPACPI_THERMAL_ACPI_TMP07:
6536 case TPACPI_THERMAL_ACPI_UPDT:
6b99e356 6537 res = sysfs_create_group(&tpacpi_hwmon->kobj,
2c37aa4e
HMH		 6538 &thermal_temp_input8_group);
6539 if (res)
6540 return res;
6541 break;
6542 case TPACPI_THERMAL_NONE:
6543 default:
6544 return 1;
6545 }
6546
6547 return 0;
6548}
6549
6550static void thermal_exit(void)
6551{
35ff8b9f 6552 switch (thermal_read_mode) {
2c37aa4e 6553 case TPACPI_THERMAL_TPEC_16:
6b99e356 6554 sysfs_remove_group(&tpacpi_hwmon->kobj,
2c37aa4e
HMH		 6555 &thermal_temp_input16_group);
6556 break;
6557 case TPACPI_THERMAL_TPEC_8:
6558 case TPACPI_THERMAL_ACPI_TMP07:
6559 case TPACPI_THERMAL_ACPI_UPDT:
6b99e356 6560 sysfs_remove_group(&tpacpi_hwmon->kobj,
f04d5e01 6561 &thermal_temp_input8_group);
2c37aa4e
HMH		 6562 break;
6563 case TPACPI_THERMAL_NONE:
6564 default:
6565 break;
6566 }
78f81cc4
BD		 6567}
6568
887965e6 6569static int thermal_read(struct seq_file *m)
a26f878a 6570{
a26f878a
HMH		 6571 int n, i;
6572 struct ibm_thermal_sensors_struct t;
6573
6574 n = thermal_get_sensors(&t);
6575 if (unlikely(n < 0))
6576 return n;
6577
887965e6 6578 seq_printf(m, "temperatures:\t");
a26f878a
HMH		 6579
6580 if (n > 0) {
6581 for (i = 0; i < (n - 1); i++)
887965e6
AD		 6582 seq_printf(m, "%d ", t.temp[i] / 1000);
6583 seq_printf(m, "%d\n", t.temp[i] / 1000);
a26f878a 6584 } else
887965e6 6585 seq_printf(m, "not supported\n");
78f81cc4 6586
887965e6 6587 return 0;
78f81cc4
BD		 6588}
6589
a5763f22
HMH		 6590static struct ibm_struct thermal_driver_data = {
6591 .name = "thermal",
6592 .read = thermal_read,
2c37aa4e 6593 .exit = thermal_exit,
a5763f22
HMH		 6594};
6595
56b6aeb0
HMH		 6596/*************************************************************************
6597 * Backlight/brightness subdriver
6598 */
6599
f74a27d4
HMH		 6600#define TPACPI_BACKLIGHT_DEV_NAME "thinkpad_screen"
6601
0e501834
HMH		 6602/*
6603 * ThinkPads can read brightness from two places: EC HBRV (0x31), or
6604 * CMOS NVRAM byte 0x5E, bits 0-3.
6605 *
6606 * EC HBRV (0x31) has the following layout
6607 * Bit 7: unknown function
6608 * Bit 6: unknown function
6609 * Bit 5: Z: honour scale changes, NZ: ignore scale changes
6610 * Bit 4: must be set to zero to avoid problems
6611 * Bit 3-0: backlight brightness level
6612 *
6613 * brightness_get_raw returns status data in the HBRV layout
d7880f10
HMH		 6614 *
6615 * WARNING: The X61 has been verified to use HBRV for something else, so
6616 * this should be used _only_ on IBM ThinkPads, and maybe with some careful
6617 * testing on the very early *60 Lenovo models...
0e501834
HMH		 6618 */
6619
e11aecf1
HMH		 6620enum {
6621 TP_EC_BACKLIGHT = 0x31,
6622
6623 /* TP_EC_BACKLIGHT bitmasks */
6624 TP_EC_BACKLIGHT_LVLMSK = 0x1F,
6625 TP_EC_BACKLIGHT_CMDMSK = 0xE0,
6626 TP_EC_BACKLIGHT_MAPSW = 0x20,
6627};
6628
0e501834
HMH		 6629enum tpacpi_brightness_access_mode {
6630 TPACPI_BRGHT_MODE_AUTO = 0, /* Not implemented yet */
6631 TPACPI_BRGHT_MODE_EC, /* EC control */
6632 TPACPI_BRGHT_MODE_UCMS_STEP, /* UCMS step-based control */
6633 TPACPI_BRGHT_MODE_ECNVRAM, /* EC control w/ NVRAM store */
6634 TPACPI_BRGHT_MODE_MAX
6635};
6636
94954cc6 6637static struct backlight_device *ibm_backlight_device;
0e501834
HMH		 6638
6639static enum tpacpi_brightness_access_mode brightness_mode =
6640 TPACPI_BRGHT_MODE_MAX;
6641
f74a27d4
HMH		 6642static unsigned int brightness_enable = 2; /* 2 = auto, 0 = no, 1 = yes */
6643
b21a15f6 6644static struct mutex brightness_mutex;
56b6aeb0 6645
0e501834
HMH		 6646/* NVRAM brightness access,
6647 * call with brightness_mutex held! */
6648static unsigned int tpacpi_brightness_nvram_get(void)
b21a15f6 6649{
0e501834 6650 u8 lnvram;
b21a15f6 6651
0e501834
HMH		 6652 lnvram = (nvram_read_byte(TP_NVRAM_ADDR_BRIGHTNESS)
6653 & TP_NVRAM_MASK_LEVEL_BRIGHTNESS)
6654 >> TP_NVRAM_POS_LEVEL_BRIGHTNESS;
77775838 6655 lnvram &= bright_maxlvl;
0e501834
HMH		 6656
6657 return lnvram;
6658}
6659
6660static void tpacpi_brightness_checkpoint_nvram(void)
6661{
6662 u8 lec = 0;
6663 u8 b_nvram;
6664
6665 if (brightness_mode != TPACPI_BRGHT_MODE_ECNVRAM)
6666 return;
6667
6668 vdbg_printk(TPACPI_DBG_BRGHT,
6669 "trying to checkpoint backlight level to NVRAM...\n");
6670
6671 if (mutex_lock_killable(&brightness_mutex) < 0)
6672 return;
6673
6674 if (unlikely(!acpi_ec_read(TP_EC_BACKLIGHT, &lec)))
6675 goto unlock;
6676 lec &= TP_EC_BACKLIGHT_LVLMSK;
6677 b_nvram = nvram_read_byte(TP_NVRAM_ADDR_BRIGHTNESS);
6678
6679 if (lec != ((b_nvram & TP_NVRAM_MASK_LEVEL_BRIGHTNESS)
6680 >> TP_NVRAM_POS_LEVEL_BRIGHTNESS)) {
6681 /* NVRAM needs update */
6682 b_nvram &= ~(TP_NVRAM_MASK_LEVEL_BRIGHTNESS <<
6683 TP_NVRAM_POS_LEVEL_BRIGHTNESS);
6684 b_nvram |= lec;
6685 nvram_write_byte(b_nvram, TP_NVRAM_ADDR_BRIGHTNESS);
6686 dbg_printk(TPACPI_DBG_BRGHT,
6687 "updated NVRAM backlight level to %u (0x%02x)\n",
6688 (unsigned int) lec, (unsigned int) b_nvram);
6689 } else
6690 vdbg_printk(TPACPI_DBG_BRGHT,
6691 "NVRAM backlight level already is %u (0x%02x)\n",
6692 (unsigned int) lec, (unsigned int) b_nvram);
6693
6694unlock:
6695 mutex_unlock(&brightness_mutex);
6696}
6697
6698
6699/* call with brightness_mutex held! */
6700static int tpacpi_brightness_get_raw(int *status)
6701{
6702 u8 lec = 0;
6703
6704 switch (brightness_mode) {
6705 case TPACPI_BRGHT_MODE_UCMS_STEP:
6706 *status = tpacpi_brightness_nvram_get();
6707 return 0;
6708 case TPACPI_BRGHT_MODE_EC:
6709 case TPACPI_BRGHT_MODE_ECNVRAM:
6710 if (unlikely(!acpi_ec_read(TP_EC_BACKLIGHT, &lec)))
2d5e94d7 6711 return -EIO;
0e501834
HMH		 6712 *status = lec;
6713 return 0;
6714 default:
6715 return -ENXIO;
b21a15f6 6716 }
0e501834
HMH		 6717}
6718
6719/* call with brightness_mutex held! */
6720/* do NOT call with illegal backlight level value */
6721static int tpacpi_brightness_set_ec(unsigned int value)
6722{
6723 u8 lec = 0;
6724
6725 if (unlikely(!acpi_ec_read(TP_EC_BACKLIGHT, &lec)))
6726 return -EIO;
6727
6728 if (unlikely(!acpi_ec_write(TP_EC_BACKLIGHT,
6729 (lec & TP_EC_BACKLIGHT_CMDMSK) |
6730 (value & TP_EC_BACKLIGHT_LVLMSK))))
6731 return -EIO;
6732
6733 return 0;
6734}
6735
6736/* call with brightness_mutex held! */
6737static int tpacpi_brightness_set_ucmsstep(unsigned int value)
6738{
6739 int cmos_cmd, inc;
6740 unsigned int current_value, i;
6741
6742 current_value = tpacpi_brightness_nvram_get();
6743
6744 if (value == current_value)
6745 return 0;
6746
6747 cmos_cmd = (value > current_value) ?
6748 TP_CMOS_BRIGHTNESS_UP :
6749 TP_CMOS_BRIGHTNESS_DOWN;
6750 inc = (value > current_value) ? 1 : -1;
6751
6752 for (i = current_value; i != value; i += inc)
6753 if (issue_thinkpad_cmos_command(cmos_cmd))
6754 return -EIO;
b21a15f6 6755
e11aecf1 6756 return 0;
b21a15f6
HMH		 6757}
6758
6759/* May return EINTR which can always be mapped to ERESTARTSYS */
0e501834 6760static int brightness_set(unsigned int value)
b21a15f6 6761{
0e501834 6762 int res;
b21a15f6 6763
bd3c7b9e 6764 if (value > bright_maxlvl)
b21a15f6
HMH		 6765 return -EINVAL;
6766
0e501834
HMH		 6767 vdbg_printk(TPACPI_DBG_BRGHT,
6768 "set backlight level to %d\n", value);
6769
7646ea88 6770 res = mutex_lock_killable(&brightness_mutex);
b21a15f6
HMH		 6771 if (res < 0)
6772 return res;
6773
0e501834
HMH		 6774 switch (brightness_mode) {
6775 case TPACPI_BRGHT_MODE_EC:
6776 case TPACPI_BRGHT_MODE_ECNVRAM:
6777 res = tpacpi_brightness_set_ec(value);
6778 break;
6779 case TPACPI_BRGHT_MODE_UCMS_STEP:
6780 res = tpacpi_brightness_set_ucmsstep(value);
6781 break;
6782 default:
6783 res = -ENXIO;
b21a15f6
HMH		 6784 }
6785
b21a15f6
HMH		 6786 mutex_unlock(&brightness_mutex);
6787 return res;
6788}
6789
6790/* sysfs backlight class ----------------------------------------------- */
6791
6792static int brightness_update_status(struct backlight_device *bd)
6793{
0e501834 6794 unsigned int level =
b21a15f6
HMH		 6795 (bd->props.fb_blank == FB_BLANK_UNBLANK &&
6796 bd->props.power == FB_BLANK_UNBLANK) ?
0e501834
HMH		 6797 bd->props.brightness : 0;
6798
6799 dbg_printk(TPACPI_DBG_BRGHT,
6800 "backlight: attempt to set level to %d\n",
6801 level);
6802
6803 /* it is the backlight class's job (caller) to handle
6804 * EINTR and other errors properly */
6805 return brightness_set(level);
b21a15f6
HMH		 6806}
6807
e11aecf1 6808static int brightness_get(struct backlight_device *bd)
a3f104c0 6809{
e11aecf1 6810 int status, res;
a3f104c0 6811
0e501834 6812 res = mutex_lock_killable(&brightness_mutex);
e11aecf1 6813 if (res < 0)
0e501834
HMH		 6814 return 0;
6815
6816 res = tpacpi_brightness_get_raw(&status);
6817
6818 mutex_unlock(&brightness_mutex);
6819
6820 if (res < 0)
6821 return 0;
e11e211a 6822
e11aecf1 6823 return status & TP_EC_BACKLIGHT_LVLMSK;
e11e211a
HMH		 6824}
6825
347a2686
HMH		 6826static void tpacpi_brightness_notify_change(void)
6827{
6828 backlight_force_update(ibm_backlight_device,
6829 BACKLIGHT_UPDATE_HOTKEY);
6830}
6831
acc2472e 6832static const struct backlight_ops ibm_backlight_data = {
35ff8b9f
HMH		 6833 .get_brightness = brightness_get,
6834 .update_status = brightness_update_status,
56b6aeb0 6835};
e11e211a 6836
b21a15f6 6837/* --------------------------------------------------------------------- */
e11e211a 6838
122f2672
HMH		 6839/*
6840 * Call _BCL method of video device. On some ThinkPads this will
6841 * switch the firmware to the ACPI brightness control mode.
6842 */
6843
77775838
HMH		 6844static int __init tpacpi_query_bcl_levels(acpi_handle handle)
6845{
6846 struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
6847 union acpi_object *obj;
46445b6b 6848 struct acpi_device *device, *child;
77775838
HMH		 6849 int rc;
6850
46445b6b
AL		 6851 if (acpi_bus_get_device(handle, &device))
6852 return 0;
6853
6854 rc = 0;
6855 list_for_each_entry(child, &device->children, node) {
6856 acpi_status status = acpi_evaluate_object(child->handle, "_BCL",
6857 NULL, &buffer);
6858 if (ACPI_FAILURE(status))
6859 continue;
6860
77775838
HMH		 6861 obj = (union acpi_object *)buffer.pointer;
6862 if (!obj || (obj->type != ACPI_TYPE_PACKAGE)) {
0978e012 6863 pr_err("Unknown _BCL data, please report this to %s\n",
46445b6b 6864 TPACPI_MAIL);
77775838
HMH		 6865 rc = 0;
6866 } else {
6867 rc = obj->package.count;
6868 }
46445b6b 6869 break;
77775838
HMH		 6870 }
6871
6872 kfree(buffer.pointer);
6873 return rc;
6874}
6875
77775838
HMH		 6876
6877/*
6878 * Returns 0 (no ACPI _BCL or _BCL invalid), or size of brightness map
6879 */
6880static unsigned int __init tpacpi_check_std_acpi_brightness_support(void)
6881{
122f2672 6882 acpi_handle video_device;
77775838 6883 int bcl_levels = 0;
77775838 6884
46445b6b 6885 tpacpi_acpi_handle_locate("video", NULL, &video_device);
122f2672
HMH		 6886 if (video_device)
6887 bcl_levels = tpacpi_query_bcl_levels(video_device);
77775838 6888
122f2672 6889 tp_features.bright_acpimode = (bcl_levels > 0);
77775838 6890
122f2672 6891 return (bcl_levels > 2) ? (bcl_levels - 2) : 0;
77775838
HMH		 6892}
6893
59fe4fe3
HMH		 6894/*
6895 * These are only useful for models that have only one possibility
6896 * of GPU. If the BIOS model handles both ATI and Intel, don't use
6897 * these quirks.
6898 */
6899#define TPACPI_BRGHT_Q_NOEC 0x0001 /* Must NOT use EC HBRV */
6900#define TPACPI_BRGHT_Q_EC 0x0002 /* Should or must use EC HBRV */
6901#define TPACPI_BRGHT_Q_ASK 0x8000 /* Ask for user report */
6902
6903static const struct tpacpi_quirk brightness_quirk_table[] __initconst = {
6904 /* Models with ATI GPUs known to require ECNVRAM mode */
6905 TPACPI_Q_IBM('1', 'Y', TPACPI_BRGHT_Q_EC), /* T43/p ATI */
6906
6da25bf5 6907 /* Models with ATI GPUs that can use ECNVRAM */
7d1894d8 6908 TPACPI_Q_IBM('1', 'R', TPACPI_BRGHT_Q_EC), /* R50,51 T40-42 */
59fe4fe3 6909 TPACPI_Q_IBM('1', 'Q', TPACPI_BRGHT_Q_ASK|TPACPI_BRGHT_Q_EC),
7d1894d8 6910 TPACPI_Q_IBM('7', '6', TPACPI_BRGHT_Q_EC), /* R52 */
59fe4fe3
HMH		 6911 TPACPI_Q_IBM('7', '8', TPACPI_BRGHT_Q_ASK|TPACPI_BRGHT_Q_EC),
6912
6da25bf5 6913 /* Models with Intel Extreme Graphics 2 */
7d1894d8 6914 TPACPI_Q_IBM('1', 'U', TPACPI_BRGHT_Q_NOEC), /* X40 */
a9f8eacc
HMH		 6915 TPACPI_Q_IBM('1', 'V', TPACPI_BRGHT_Q_ASK|TPACPI_BRGHT_Q_EC),
6916 TPACPI_Q_IBM('1', 'W', TPACPI_BRGHT_Q_ASK|TPACPI_BRGHT_Q_EC),
59fe4fe3
HMH		 6917
6918 /* Models with Intel GMA900 */
6919 TPACPI_Q_IBM('7', '0', TPACPI_BRGHT_Q_NOEC), /* T43, R52 */
6920 TPACPI_Q_IBM('7', '4', TPACPI_BRGHT_Q_NOEC), /* X41 */
6921 TPACPI_Q_IBM('7', '5', TPACPI_BRGHT_Q_NOEC), /* X41 Tablet */
6922};
6923
77775838
HMH		 6924/*
6925 * Returns < 0 for error, otherwise sets tp_features.bright_*
6926 * and bright_maxlvl.
6927 */
6928static void __init tpacpi_detect_brightness_capabilities(void)
6929{
6930 unsigned int b;
6931
6932 vdbg_printk(TPACPI_DBG_INIT,
6933 "detecting firmware brightness interface capabilities\n");
6934
6935 /* we could run a quirks check here (same table used by
6936 * brightness_init) if needed */
6937
6938 /*
6939 * We always attempt to detect acpi support, so as to switch
6940 * Lenovo Vista BIOS to ACPI brightness mode even if we are not
6941 * going to publish a backlight interface
6942 */
6943 b = tpacpi_check_std_acpi_brightness_support();
6944 switch (b) {
6945 case 16:
6946 bright_maxlvl = 15;
77775838
HMH		 6947 break;
6948 case 8:
6949 case 0:
6950 bright_maxlvl = 7;
77775838
HMH		 6951 break;
6952 default:
77775838
HMH		 6953 tp_features.bright_unkfw = 1;
6954 bright_maxlvl = b - 1;
6955 }
15c75626 6956 pr_debug("detected %u brightness levels\n", bright_maxlvl + 1);
77775838
HMH		 6957}
6958
a5763f22 6959static int __init brightness_init(struct ibm_init_struct *iibm)
56b6aeb0 6960{
a19a6ee6 6961 struct backlight_properties props;
56b6aeb0 6962 int b;
59fe4fe3 6963 unsigned long quirks;
56b6aeb0 6964
fe08bc4b
HMH		 6965 vdbg_printk(TPACPI_DBG_INIT, "initializing brightness subdriver\n");
6966
f432255e
HMH		 6967 mutex_init(&brightness_mutex);
6968
59fe4fe3
HMH		 6969 quirks = tpacpi_check_quirks(brightness_quirk_table,
6970 ARRAY_SIZE(brightness_quirk_table));
6971
77775838
HMH		 6972 /* tpacpi_detect_brightness_capabilities() must have run already */
6973
6974 /* if it is unknown, we don't handle it: it wouldn't be safe */
6975 if (tp_features.bright_unkfw)
6976 return 1;
2dba1b5d 6977
b5972796 6978 if (!brightness_enable) {
0e501834 6979 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_BRGHT,
5cac62ac 6980 "brightness support disabled by module parameter\n");
b5972796
HMH		 6981 return 1;
6982 }
6983
b33c6ce5 6984 if (acpi_video_get_backlight_type() != acpi_backlight_vendor) {
217f0963 6985 if (brightness_enable > 1) {
5cac62ac 6986 pr_info("Standard ACPI backlight interface available, not loading native one\n");
217f0963
HMH		 6987 return 1;
6988 } else if (brightness_enable == 1) {
5cac62ac 6989 pr_warn("Cannot enable backlight brightness support, ACPI is already handling it. Refer to the acpi_backlight kernel parameter.\n");
217f0963
HMH		 6990 return 1;
6991 }
6992 } else if (tp_features.bright_acpimode && brightness_enable > 1) {
5cac62ac 6993 pr_notice("Standard ACPI backlight interface not available, thinkpad_acpi native brightness control enabled\n");
217f0963
HMH		 6994 }
6995
0e501834
HMH		 6996 /*
6997 * Check for module parameter bogosity, note that we
6998 * init brightness_mode to TPACPI_BRGHT_MODE_MAX in order to be
6999 * able to detect "unspecified"
7000 */
7001 if (brightness_mode > TPACPI_BRGHT_MODE_MAX)
7002 return -EINVAL;
24d3b774 7003
0e501834
HMH		 7004 /* TPACPI_BRGHT_MODE_AUTO not implemented yet, just use default */
7005 if (brightness_mode == TPACPI_BRGHT_MODE_AUTO ||
7006 brightness_mode == TPACPI_BRGHT_MODE_MAX) {
59fe4fe3
HMH		 7007 if (quirks & TPACPI_BRGHT_Q_EC)
7008 brightness_mode = TPACPI_BRGHT_MODE_ECNVRAM;
7009 else
0e501834 7010 brightness_mode = TPACPI_BRGHT_MODE_UCMS_STEP;
24d3b774 7011
0e501834 7012 dbg_printk(TPACPI_DBG_BRGHT,
59fe4fe3 7013 "driver auto-selected brightness_mode=%d\n",
0e501834
HMH		 7014 brightness_mode);
7015 }
24d3b774 7016
d7880f10 7017 /* Safety */
e28393c0 7018 if (!tpacpi_is_ibm() &&
d7880f10
HMH		 7019 (brightness_mode == TPACPI_BRGHT_MODE_ECNVRAM ||
7020 brightness_mode == TPACPI_BRGHT_MODE_EC))
7021 return -EINVAL;
7022
0e501834 7023 if (tpacpi_brightness_get_raw(&b) < 0)
24d3b774 7024 return 1;
56b6aeb0 7025
a19a6ee6 7026 memset(&props, 0, sizeof(struct backlight_properties));
bb7ca747 7027 props.type = BACKLIGHT_PLATFORM;
77775838
HMH		 7028 props.max_brightness = bright_maxlvl;
7029 props.brightness = b & TP_EC_BACKLIGHT_LVLMSK;
a19a6ee6
MG		 7030 ibm_backlight_device = backlight_device_register(TPACPI_BACKLIGHT_DEV_NAME,
7031 NULL, NULL,
7032 &ibm_backlight_data,
7033 &props);
56b6aeb0 7034 if (IS_ERR(ibm_backlight_device)) {
435c47e2
HMH		 7035 int rc = PTR_ERR(ibm_backlight_device);
7036 ibm_backlight_device = NULL;
0978e012 7037 pr_err("Could not register backlight device\n");
435c47e2 7038 return rc;
56b6aeb0 7039 }
0e501834
HMH		 7040 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_BRGHT,
7041 "brightness is supported\n");
56b6aeb0 7042
59fe4fe3 7043 if (quirks & TPACPI_BRGHT_Q_ASK) {
5cac62ac
AS		 7044 pr_notice("brightness: will use unverified default: brightness_mode=%d\n",
7045 brightness_mode);
7046 pr_notice("brightness: please report to %s whether it works well or not on your ThinkPad\n",
7047 TPACPI_MAIL);
59fe4fe3
HMH		 7048 }
7049
7d9745cf
HMH		 7050 /* Added by mistake in early 2007. Probably useless, but it could
7051 * be working around some unknown firmware problem where the value
7052 * read at startup doesn't match the real hardware state... so leave
7053 * it in place just in case */
56b6aeb0
HMH		 7054 backlight_update_status(ibm_backlight_device);
7055
347a2686 7056 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_BRGHT,
5cac62ac 7057 "brightness: registering brightness hotkeys as change notification\n");
347a2686
HMH		 7058 tpacpi_hotkey_driver_mask_set(hotkey_driver_mask
7059 | TP_ACPI_HKEY_BRGHTUP_MASK
3098064d 7060 | TP_ACPI_HKEY_BRGHTDWN_MASK);
56b6aeb0
HMH		 7061 return 0;
7062}
7063
fd3c3a42 7064static void brightness_suspend(void)
0e501834
HMH		 7065{
7066 tpacpi_brightness_checkpoint_nvram();
7067}
7068
7069static void brightness_shutdown(void)
7070{
7071 tpacpi_brightness_checkpoint_nvram();
7072}
7073
56b6aeb0
HMH		 7074static void brightness_exit(void)
7075{
7076 if (ibm_backlight_device) {
0e501834 7077 vdbg_printk(TPACPI_DBG_EXIT | TPACPI_DBG_BRGHT,
fe08bc4b 7078 "calling backlight_device_unregister()\n");
56b6aeb0 7079 backlight_device_unregister(ibm_backlight_device);
56b6aeb0 7080 }
0e501834
HMH		 7081
7082 tpacpi_brightness_checkpoint_nvram();
56b6aeb0
HMH		 7083}
7084
887965e6 7085static int brightness_read(struct seq_file *m)
56b6aeb0 7086{
56b6aeb0
HMH		 7087 int level;
7088
35ff8b9f
HMH		 7089 level = brightness_get(NULL);
7090 if (level < 0) {
887965e6 7091 seq_printf(m, "level:\t\tunreadable\n");
56b6aeb0 7092 } else {
887965e6
AD		 7093 seq_printf(m, "level:\t\t%d\n", level);
7094 seq_printf(m, "commands:\tup, down\n");
77775838
HMH		 7095 seq_printf(m, "commands:\tlevel <level> (<level> is 0-%d)\n",
7096 bright_maxlvl);
56b6aeb0
HMH		 7097 }
7098
887965e6 7099 return 0;
56b6aeb0
HMH		 7100}
7101
8acb0250
HM		 7102static int brightness_write(char *buf)
7103{
7104 int level;
4273af8d 7105 int rc;
1da177e4 7106 char *cmd;
1da177e4 7107
4273af8d
HMH		 7108 level = brightness_get(NULL);
7109 if (level < 0)
7110 return level;
78f81cc4 7111
4273af8d 7112 while ((cmd = next_cmd(&buf))) {
78f81cc4 7113 if (strlencmp(cmd, "up") == 0) {
77775838 7114 if (level < bright_maxlvl)
4273af8d 7115 level++;
78f81cc4 7116 } else if (strlencmp(cmd, "down") == 0) {
4273af8d
HMH		 7117 if (level > 0)
7118 level--;
7119 } else if (sscanf(cmd, "level %d", &level) == 1 &&
77775838 7120 level >= 0 && level <= bright_maxlvl) {
4273af8d 7121 /* new level set */
78f81cc4
BD		 7122 } else
7123 return -EINVAL;
78f81cc4
BD		 7124 }
7125
0e501834
HMH		 7126 tpacpi_disclose_usertask("procfs brightness",
7127 "set level to %d\n", level);
7128
4273af8d
HMH		 7129 /*
7130 * Now we know what the final level should be, so we try to set it.
7131 * Doing it this way makes the syscall restartable in case of EINTR
7132 */
7133 rc = brightness_set(level);
347a2686
HMH		 7134 if (!rc && ibm_backlight_device)
7135 backlight_force_update(ibm_backlight_device,
7136 BACKLIGHT_UPDATE_SYSFS);
72a979f0 7137 return (rc == -EINTR) ? -ERESTARTSYS : rc;
78f81cc4
BD		 7138}
7139
a5763f22
HMH		 7140static struct ibm_struct brightness_driver_data = {
7141 .name = "brightness",
7142 .read = brightness_read,
7143 .write = brightness_write,
7144 .exit = brightness_exit,
0e501834
HMH		 7145 .suspend = brightness_suspend,
7146 .shutdown = brightness_shutdown,
a5763f22
HMH		 7147};
7148
56b6aeb0
HMH		 7149/*************************************************************************
7150 * Volume subdriver
7151 */
fb87a811 7152
329e4e18
HMH		 7153/*
7154 * IBM ThinkPads have a simple volume controller with MUTE gating.
7155 * Very early Lenovo ThinkPads follow the IBM ThinkPad spec.
7156 *
7157 * Since the *61 series (and probably also the later *60 series), Lenovo
7158 * ThinkPads only implement the MUTE gate.
7159 *
7160 * EC register 0x30
7161 * Bit 6: MUTE (1 mutes sound)
7162 * Bit 3-0: Volume
7163 * Other bits should be zero as far as we know.
7164 *
7165 * This is also stored in CMOS NVRAM, byte 0x60, bit 6 (MUTE), and
7166 * bits 3-0 (volume). Other bits in NVRAM may have other functions,
7167 * such as bit 7 which is used to detect repeated presses of MUTE,
7168 * and we leave them unchanged.
9a417ec0
AL		 7169 *
7170 * On newer Lenovo ThinkPads, the EC can automatically change the volume
7171 * in response to user input. Unfortunately, this rarely works well.
7172 * The laptop changes the state of its internal MUTE gate and, on some
7173 * models, sends KEY_MUTE, causing any user code that responds to the
7174 * mute button to get confused. The hardware MUTE gate is also
7175 * unnecessary, since user code can handle the mute button without
7176 * kernel or EC help.
7177 *
7178 * To avoid confusing userspace, we simply disable all EC-based mute
7179 * and volume controls when possible.
329e4e18
HMH		 7180 */
7181
ff850c33
HMH		 7182#ifdef CONFIG_THINKPAD_ACPI_ALSA_SUPPORT
7183
0d204c34
HMH		 7184#define TPACPI_ALSA_DRVNAME "ThinkPad EC"
7185#define TPACPI_ALSA_SHRTNAME "ThinkPad Console Audio Control"
7186#define TPACPI_ALSA_MIXERNAME TPACPI_ALSA_SHRTNAME
7187
cab66613
TI		 7188#if SNDRV_CARDS <= 32
7189#define DEFAULT_ALSA_IDX ~((1 << (SNDRV_CARDS - 3)) - 1)
7190#else
7191#define DEFAULT_ALSA_IDX ~((1 << (32 - 3)) - 1)
7192#endif
7193static int alsa_index = DEFAULT_ALSA_IDX; /* last three slots */
0d204c34 7194static char *alsa_id = "ThinkPadEC";
90ab5ee9 7195static bool alsa_enable = SNDRV_DEFAULT_ENABLE1;
0d204c34
HMH		 7196
7197struct tpacpi_alsa_data {
7198 struct snd_card *card;
7199 struct snd_ctl_elem_id *ctl_mute_id;
7200 struct snd_ctl_elem_id *ctl_vol_id;
7201};
7202
7203static struct snd_card *alsa_card;
7204
329e4e18
HMH		 7205enum {
7206 TP_EC_AUDIO = 0x30,
7207
7208 /* TP_EC_AUDIO bits */
7209 TP_EC_AUDIO_MUTESW = 6,
7210
7211 /* TP_EC_AUDIO bitmasks */
7212 TP_EC_AUDIO_LVL_MSK = 0x0F,
7213 TP_EC_AUDIO_MUTESW_MSK = (1 << TP_EC_AUDIO_MUTESW),
7214
7215 /* Maximum volume */
7216 TP_EC_VOLUME_MAX = 14,
7217};
7218
7219enum tpacpi_volume_access_mode {
7220 TPACPI_VOL_MODE_AUTO = 0, /* Not implemented yet */
7221 TPACPI_VOL_MODE_EC, /* Pure EC control */
7222 TPACPI_VOL_MODE_UCMS_STEP, /* UCMS step-based control: N/A */
7223 TPACPI_VOL_MODE_ECNVRAM, /* EC control w/ NVRAM store */
7224 TPACPI_VOL_MODE_MAX
7225};
7226
a112ceee
HMH		 7227enum tpacpi_volume_capabilities {
7228 TPACPI_VOL_CAP_AUTO = 0, /* Use white/blacklist */
7229 TPACPI_VOL_CAP_VOLMUTE, /* Output vol and mute */
7230 TPACPI_VOL_CAP_MUTEONLY, /* Output mute only */
7231 TPACPI_VOL_CAP_MAX
7232};
7233
9a417ec0
AL		 7234enum tpacpi_mute_btn_mode {
7235 TP_EC_MUTE_BTN_LATCH = 0, /* Mute mutes; up/down unmutes */
7236 /* We don't know what mode 1 is. */
7237 TP_EC_MUTE_BTN_NONE = 2, /* Mute and up/down are just keys */
7238 TP_EC_MUTE_BTN_TOGGLE = 3, /* Mute toggles; up/down unmutes */
7239};
7240
329e4e18
HMH		 7241static enum tpacpi_volume_access_mode volume_mode =
7242 TPACPI_VOL_MODE_MAX;
7243
a112ceee 7244static enum tpacpi_volume_capabilities volume_capabilities;
90ab5ee9 7245static bool volume_control_allowed;
9a417ec0
AL		 7246static bool software_mute_requested = true;
7247static bool software_mute_active;
7248static int software_mute_orig_mode;
f74a27d4 7249
329e4e18
HMH		 7250/*
7251 * Used to syncronize writers to TP_EC_AUDIO and
7252 * TP_NVRAM_ADDR_MIXER, as we need to do read-modify-write
7253 */
7254static struct mutex volume_mutex;
7255
7256static void tpacpi_volume_checkpoint_nvram(void)
78f81cc4 7257{
329e4e18
HMH		 7258 u8 lec = 0;
7259 u8 b_nvram;
a112ceee 7260 u8 ec_mask;
329e4e18
HMH		 7261
7262 if (volume_mode != TPACPI_VOL_MODE_ECNVRAM)
7263 return;
c7ac6291
HMH		 7264 if (!volume_control_allowed)
7265 return;
9a417ec0
AL		 7266 if (software_mute_active)
7267 return;
329e4e18
HMH		 7268
7269 vdbg_printk(TPACPI_DBG_MIXER,
7270 "trying to checkpoint mixer state to NVRAM...\n");
78f81cc4 7271
a112ceee
HMH		 7272 if (tp_features.mixer_no_level_control)
7273 ec_mask = TP_EC_AUDIO_MUTESW_MSK;
7274 else
7275 ec_mask = TP_EC_AUDIO_MUTESW_MSK | TP_EC_AUDIO_LVL_MSK;
7276
329e4e18
HMH		 7277 if (mutex_lock_killable(&volume_mutex) < 0)
7278 return;
7279
7280 if (unlikely(!acpi_ec_read(TP_EC_AUDIO, &lec)))
7281 goto unlock;
7282 lec &= ec_mask;
7283 b_nvram = nvram_read_byte(TP_NVRAM_ADDR_MIXER);
7284
7285 if (lec != (b_nvram & ec_mask)) {
7286 /* NVRAM needs update */
7287 b_nvram &= ~ec_mask;
7288 b_nvram |= lec;
7289 nvram_write_byte(b_nvram, TP_NVRAM_ADDR_MIXER);
7290 dbg_printk(TPACPI_DBG_MIXER,
7291 "updated NVRAM mixer status to 0x%02x (0x%02x)\n",
7292 (unsigned int) lec, (unsigned int) b_nvram);
78f81cc4 7293 } else {
329e4e18
HMH		 7294 vdbg_printk(TPACPI_DBG_MIXER,
7295 "NVRAM mixer status already is 0x%02x (0x%02x)\n",
7296 (unsigned int) lec, (unsigned int) b_nvram);
78f81cc4
BD		 7297 }
7298
329e4e18
HMH		 7299unlock:
7300 mutex_unlock(&volume_mutex);
78f81cc4
BD		 7301}
7302
329e4e18 7303static int volume_get_status_ec(u8 *status)
78f81cc4 7304{
329e4e18 7305 u8 s;
78f81cc4 7306
329e4e18
HMH		 7307 if (!acpi_ec_read(TP_EC_AUDIO, &s))
7308 return -EIO;
78f81cc4 7309
329e4e18 7310 *status = s;
1da177e4 7311
329e4e18 7312 dbg_printk(TPACPI_DBG_MIXER, "status 0x%02x\n", s);
35ff8b9f 7313
329e4e18
HMH		 7314 return 0;
7315}
78f81cc4 7316
329e4e18
HMH		 7317static int volume_get_status(u8 *status)
7318{
7319 return volume_get_status_ec(status);
7320}
78f81cc4 7321
329e4e18
HMH		 7322static int volume_set_status_ec(const u8 status)
7323{
7324 if (!acpi_ec_write(TP_EC_AUDIO, status))
7325 return -EIO;
78f81cc4 7326
329e4e18
HMH		 7327 dbg_printk(TPACPI_DBG_MIXER, "set EC mixer to 0x%02x\n", status);
7328
9a417ec0
AL		 7329 /*
7330 * On X200s, and possibly on others, it can take a while for
7331 * reads to become correct.
7332 */
7333 msleep(1);
7334
329e4e18
HMH		 7335 return 0;
7336}
7337
7338static int volume_set_status(const u8 status)
7339{
7340 return volume_set_status_ec(status);
7341}
7342
88cc8377
HMH		 7343/* returns < 0 on error, 0 on no change, 1 on change */
7344static int __volume_set_mute_ec(const bool mute)
329e4e18
HMH		 7345{
7346 int rc;
7347 u8 s, n;
7348
7349 if (mutex_lock_killable(&volume_mutex) < 0)
7350 return -EINTR;
7351
7352 rc = volume_get_status_ec(&s);
7353 if (rc)
7354 goto unlock;
7355
7356 n = (mute) ? s | TP_EC_AUDIO_MUTESW_MSK :
7357 s & ~TP_EC_AUDIO_MUTESW_MSK;
7358
88cc8377 7359 if (n != s) {
329e4e18 7360 rc = volume_set_status_ec(n);
88cc8377
HMH		 7361 if (!rc)
7362 rc = 1;
7363 }
329e4e18
HMH		 7364
7365unlock:
7366 mutex_unlock(&volume_mutex);
7367 return rc;
7368}
7369
88cc8377
HMH		 7370static int volume_alsa_set_mute(const bool mute)
7371{
7372 dbg_printk(TPACPI_DBG_MIXER, "ALSA: trying to %smute\n",
7373 (mute) ? "" : "un");
7374 return __volume_set_mute_ec(mute);
7375}
7376
329e4e18
HMH		 7377static int volume_set_mute(const bool mute)
7378{
88cc8377
HMH		 7379 int rc;
7380
329e4e18
HMH		 7381 dbg_printk(TPACPI_DBG_MIXER, "trying to %smute\n",
7382 (mute) ? "" : "un");
88cc8377
HMH		 7383
7384 rc = __volume_set_mute_ec(mute);
7385 return (rc < 0) ? rc : 0;
329e4e18
HMH		 7386}
7387
88cc8377
HMH		 7388/* returns < 0 on error, 0 on no change, 1 on change */
7389static int __volume_set_volume_ec(const u8 vol)
329e4e18
HMH		 7390{
7391 int rc;
7392 u8 s, n;
7393
7394 if (vol > TP_EC_VOLUME_MAX)
7395 return -EINVAL;
7396
7397 if (mutex_lock_killable(&volume_mutex) < 0)
7398 return -EINTR;
7399
7400 rc = volume_get_status_ec(&s);
7401 if (rc)
7402 goto unlock;
7403
7404 n = (s & ~TP_EC_AUDIO_LVL_MSK) | vol;
7405
88cc8377 7406 if (n != s) {
329e4e18 7407 rc = volume_set_status_ec(n);
88cc8377
HMH		 7408 if (!rc)
7409 rc = 1;
7410 }
329e4e18
HMH		 7411
7412unlock:
7413 mutex_unlock(&volume_mutex);
7414 return rc;
7415}
7416
9a417ec0
AL		 7417static int volume_set_software_mute(bool startup)
7418{
7419 int result;
7420
7421 if (!tpacpi_is_lenovo())
7422 return -ENODEV;
7423
7424 if (startup) {
7425 if (!acpi_evalf(ec_handle, &software_mute_orig_mode,
7426 "HAUM", "qd"))
7427 return -EIO;
7428
7429 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER,
7430 "Initial HAUM setting was %d\n",
7431 software_mute_orig_mode);
7432 }
7433
7434 if (!acpi_evalf(ec_handle, &result, "SAUM", "qdd",
7435 (int)TP_EC_MUTE_BTN_NONE))
7436 return -EIO;
7437
7438 if (result != TP_EC_MUTE_BTN_NONE)
7439 pr_warn("Unexpected SAUM result %d\n",
7440 result);
7441
7442 /*
7443 * In software mute mode, the standard codec controls take
7444 * precendence, so we unmute the ThinkPad HW switch at
7445 * startup. Just on case there are SAUM-capable ThinkPads
7446 * with level controls, set max HW volume as well.
7447 */
7448 if (tp_features.mixer_no_level_control)
7449 result = volume_set_mute(false);
7450 else
7451 result = volume_set_status(TP_EC_VOLUME_MAX);
7452
7453 if (result != 0)
7454 pr_warn("Failed to unmute the HW mute switch\n");
7455
7456 return 0;
7457}
7458
7459static void volume_exit_software_mute(void)
7460{
7461 int r;
7462
7463 if (!acpi_evalf(ec_handle, &r, "SAUM", "qdd", software_mute_orig_mode)
7464 || r != software_mute_orig_mode)
7465 pr_warn("Failed to restore mute mode\n");
7466}
7467
88cc8377 7468static int volume_alsa_set_volume(const u8 vol)
329e4e18
HMH		 7469{
7470 dbg_printk(TPACPI_DBG_MIXER,
88cc8377
HMH		 7471 "ALSA: trying to set volume level to %hu\n", vol);
7472 return __volume_set_volume_ec(vol);
329e4e18
HMH		 7473}
7474
0d204c34
HMH		 7475static void volume_alsa_notify_change(void)
7476{
7477 struct tpacpi_alsa_data *d;
7478
7479 if (alsa_card && alsa_card->private_data) {
7480 d = alsa_card->private_data;
7481 if (d->ctl_mute_id)
7482 snd_ctl_notify(alsa_card,
7483 SNDRV_CTL_EVENT_MASK_VALUE,
7484 d->ctl_mute_id);
7485 if (d->ctl_vol_id)
7486 snd_ctl_notify(alsa_card,
7487 SNDRV_CTL_EVENT_MASK_VALUE,
7488 d->ctl_vol_id);
7489 }
7490}
7491
7492static int volume_alsa_vol_info(struct snd_kcontrol *kcontrol,
7493 struct snd_ctl_elem_info *uinfo)
7494{
7495 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
7496 uinfo->count = 1;
7497 uinfo->value.integer.min = 0;
7498 uinfo->value.integer.max = TP_EC_VOLUME_MAX;
7499 return 0;
7500}
7501
7502static int volume_alsa_vol_get(struct snd_kcontrol *kcontrol,
7503 struct snd_ctl_elem_value *ucontrol)
7504{
7505 u8 s;
7506 int rc;
7507
7508 rc = volume_get_status(&s);
7509 if (rc < 0)
7510 return rc;
7511
7512 ucontrol->value.integer.value[0] = s & TP_EC_AUDIO_LVL_MSK;
7513 return 0;
7514}
7515
7516static int volume_alsa_vol_put(struct snd_kcontrol *kcontrol,
7517 struct snd_ctl_elem_value *ucontrol)
7518{
38e11cde
HMH		 7519 tpacpi_disclose_usertask("ALSA", "set volume to %ld\n",
7520 ucontrol->value.integer.value[0]);
88cc8377 7521 return volume_alsa_set_volume(ucontrol->value.integer.value[0]);
0d204c34
HMH		 7522}
7523
7524#define volume_alsa_mute_info snd_ctl_boolean_mono_info
7525
7526static int volume_alsa_mute_get(struct snd_kcontrol *kcontrol,
7527 struct snd_ctl_elem_value *ucontrol)
7528{
7529 u8 s;
7530 int rc;
7531
7532 rc = volume_get_status(&s);
7533 if (rc < 0)
7534 return rc;
7535
7536 ucontrol->value.integer.value[0] =
7537 (s & TP_EC_AUDIO_MUTESW_MSK) ? 0 : 1;
7538 return 0;
7539}
7540
7541static int volume_alsa_mute_put(struct snd_kcontrol *kcontrol,
7542 struct snd_ctl_elem_value *ucontrol)
7543{
38e11cde
HMH		 7544 tpacpi_disclose_usertask("ALSA", "%smute\n",
7545 ucontrol->value.integer.value[0] ?
7546 "un" : "");
88cc8377 7547 return volume_alsa_set_mute(!ucontrol->value.integer.value[0]);
0d204c34
HMH		 7548}
7549
c3aa4723 7550static struct snd_kcontrol_new volume_alsa_control_vol __initdata = {
0d204c34
HMH		 7551 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
7552 .name = "Console Playback Volume",
7553 .index = 0,
7554 .access = SNDRV_CTL_ELEM_ACCESS_READ,
7555 .info = volume_alsa_vol_info,
7556 .get = volume_alsa_vol_get,
7557};
7558
c3aa4723 7559static struct snd_kcontrol_new volume_alsa_control_mute __initdata = {
0d204c34
HMH		 7560 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
7561 .name = "Console Playback Switch",
7562 .index = 0,
7563 .access = SNDRV_CTL_ELEM_ACCESS_READ,
7564 .info = volume_alsa_mute_info,
7565 .get = volume_alsa_mute_get,
7566};
7567
fd3c3a42 7568static void volume_suspend(void)
329e4e18
HMH		 7569{
7570 tpacpi_volume_checkpoint_nvram();
7571}
7572
0d204c34
HMH		 7573static void volume_resume(void)
7574{
9a417ec0
AL		 7575 if (software_mute_active) {
7576 if (volume_set_software_mute(false) < 0)
7577 pr_warn("Failed to restore software mute\n");
7578 } else {
7579 volume_alsa_notify_change();
7580 }
0d204c34
HMH		 7581}
7582
329e4e18
HMH		 7583static void volume_shutdown(void)
7584{
7585 tpacpi_volume_checkpoint_nvram();
7586}
7587
7588static void volume_exit(void)
7589{
0d204c34
HMH		 7590 if (alsa_card) {
7591 snd_card_free(alsa_card);
7592 alsa_card = NULL;
7593 }
7594
329e4e18 7595 tpacpi_volume_checkpoint_nvram();
9a417ec0
AL		 7596
7597 if (software_mute_active)
7598 volume_exit_software_mute();
329e4e18
HMH		 7599}
7600
0d204c34
HMH		 7601static int __init volume_create_alsa_mixer(void)
7602{
7603 struct snd_card *card;
7604 struct tpacpi_alsa_data *data;
7605 struct snd_kcontrol *ctl_vol;
7606 struct snd_kcontrol *ctl_mute;
7607 int rc;
7608
89235e55
TI		 7609 rc = snd_card_new(&tpacpi_pdev->dev,
7610 alsa_index, alsa_id, THIS_MODULE,
7611 sizeof(struct tpacpi_alsa_data), &card);
74c75c18 7612 if (rc < 0 || !card) {
0978e012 7613 pr_err("Failed to create ALSA card structures: %d\n", rc);
74c75c18
HMH		 7614 return 1;
7615 }
0d204c34
HMH		 7616
7617 BUG_ON(!card->private_data);
7618 data = card->private_data;
7619 data->card = card;
7620
7621 strlcpy(card->driver, TPACPI_ALSA_DRVNAME,
7622 sizeof(card->driver));
7623 strlcpy(card->shortname, TPACPI_ALSA_SHRTNAME,
7624 sizeof(card->shortname));
7625 snprintf(card->mixername, sizeof(card->mixername), "ThinkPad EC %s",
7626 (thinkpad_id.ec_version_str) ?
7627 thinkpad_id.ec_version_str : "(unknown)");
7628 snprintf(card->longname, sizeof(card->longname),
7629 "%s at EC reg 0x%02x, fw %s", card->shortname, TP_EC_AUDIO,
7630 (thinkpad_id.ec_version_str) ?
7631 thinkpad_id.ec_version_str : "unknown");
7632
7633 if (volume_control_allowed) {
7634 volume_alsa_control_vol.put = volume_alsa_vol_put;
7635 volume_alsa_control_vol.access =
7636 SNDRV_CTL_ELEM_ACCESS_READWRITE;
7637
7638 volume_alsa_control_mute.put = volume_alsa_mute_put;
7639 volume_alsa_control_mute.access =
7640 SNDRV_CTL_ELEM_ACCESS_READWRITE;
7641 }
7642
7643 if (!tp_features.mixer_no_level_control) {
7644 ctl_vol = snd_ctl_new1(&volume_alsa_control_vol, NULL);
7645 rc = snd_ctl_add(card, ctl_vol);
7646 if (rc < 0) {
0978e012
JP		 7647 pr_err("Failed to create ALSA volume control: %d\n",
7648 rc);
74c75c18 7649 goto err_exit;
78f81cc4 7650 }
0d204c34
HMH		 7651 data->ctl_vol_id = &ctl_vol->id;
7652 }
78f81cc4 7653
0d204c34
HMH		 7654 ctl_mute = snd_ctl_new1(&volume_alsa_control_mute, NULL);
7655 rc = snd_ctl_add(card, ctl_mute);
7656 if (rc < 0) {
0978e012 7657 pr_err("Failed to create ALSA mute control: %d\n", rc);
74c75c18 7658 goto err_exit;
0d204c34
HMH		 7659 }
7660 data->ctl_mute_id = &ctl_mute->id;
35ff8b9f 7661
0d204c34 7662 rc = snd_card_register(card);
0d204c34 7663 if (rc < 0) {
0978e012 7664 pr_err("Failed to register ALSA card: %d\n", rc);
74c75c18 7665 goto err_exit;
0d204c34
HMH		 7666 }
7667
7668 alsa_card = card;
74c75c18
HMH		 7669 return 0;
7670
7671err_exit:
7672 snd_card_free(card);
7673 return 1;
0d204c34
HMH		 7674}
7675
a112ceee
HMH		 7676#define TPACPI_VOL_Q_MUTEONLY 0x0001 /* Mute-only control available */
7677#define TPACPI_VOL_Q_LEVEL 0x0002 /* Volume control available */
7678
7679static const struct tpacpi_quirk volume_quirk_table[] __initconst = {
7680 /* Whitelist volume level on all IBM by default */
7681 { .vendor = PCI_VENDOR_ID_IBM,
7682 .bios = TPACPI_MATCH_ANY,
7683 .ec = TPACPI_MATCH_ANY,
7684 .quirks = TPACPI_VOL_Q_LEVEL },
7685
7686 /* Lenovo models with volume control (needs confirmation) */
7687 TPACPI_QEC_LNV('7', 'C', TPACPI_VOL_Q_LEVEL), /* R60/i */
7688 TPACPI_QEC_LNV('7', 'E', TPACPI_VOL_Q_LEVEL), /* R60e/i */
7689 TPACPI_QEC_LNV('7', '9', TPACPI_VOL_Q_LEVEL), /* T60/p */
7690 TPACPI_QEC_LNV('7', 'B', TPACPI_VOL_Q_LEVEL), /* X60/s */
7691 TPACPI_QEC_LNV('7', 'J', TPACPI_VOL_Q_LEVEL), /* X60t */
7692 TPACPI_QEC_LNV('7', '7', TPACPI_VOL_Q_LEVEL), /* Z60 */
7693 TPACPI_QEC_LNV('7', 'F', TPACPI_VOL_Q_LEVEL), /* Z61 */
7694
7695 /* Whitelist mute-only on all Lenovo by default */
7696 { .vendor = PCI_VENDOR_ID_LENOVO,
7697 .bios = TPACPI_MATCH_ANY,
7698 .ec = TPACPI_MATCH_ANY,
7699 .quirks = TPACPI_VOL_Q_MUTEONLY }
7700};
7701
329e4e18
HMH		 7702static int __init volume_init(struct ibm_init_struct *iibm)
7703{
a112ceee 7704 unsigned long quirks;
0d204c34 7705 int rc;
a112ceee 7706
329e4e18
HMH		 7707 vdbg_printk(TPACPI_DBG_INIT, "initializing volume subdriver\n");
7708
7709 mutex_init(&volume_mutex);
7710
7711 /*
7712 * Check for module parameter bogosity, note that we
7713 * init volume_mode to TPACPI_VOL_MODE_MAX in order to be
7714 * able to detect "unspecified"
7715 */
7716 if (volume_mode > TPACPI_VOL_MODE_MAX)
7717 return -EINVAL;
7718
7719 if (volume_mode == TPACPI_VOL_MODE_UCMS_STEP) {
5cac62ac
AS		 7720 pr_err("UCMS step volume mode not implemented, please contact %s\n",
7721 TPACPI_MAIL);
329e4e18
HMH		 7722 return 1;
7723 }
7724
a112ceee
HMH		 7725 if (volume_capabilities >= TPACPI_VOL_CAP_MAX)
7726 return -EINVAL;
7727
0d204c34
HMH		 7728 /*
7729 * The ALSA mixer is our primary interface.
7730 * When disabled, don't install the subdriver at all
7731 */
7732 if (!alsa_enable) {
7733 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER,
5cac62ac 7734 "ALSA mixer disabled by parameter, not loading volume subdriver...\n");
0d204c34
HMH		 7735 return 1;
7736 }
7737
a112ceee
HMH		 7738 quirks = tpacpi_check_quirks(volume_quirk_table,
7739 ARRAY_SIZE(volume_quirk_table));
7740
7741 switch (volume_capabilities) {
7742 case TPACPI_VOL_CAP_AUTO:
7743 if (quirks & TPACPI_VOL_Q_MUTEONLY)
7744 tp_features.mixer_no_level_control = 1;
7745 else if (quirks & TPACPI_VOL_Q_LEVEL)
7746 tp_features.mixer_no_level_control = 0;
7747 else
7748 return 1; /* no mixer */
7749 break;
7750 case TPACPI_VOL_CAP_VOLMUTE:
7751 tp_features.mixer_no_level_control = 0;
7752 break;
7753 case TPACPI_VOL_CAP_MUTEONLY:
7754 tp_features.mixer_no_level_control = 1;
7755 break;
7756 default:
7757 return 1;
7758 }
7759
7760 if (volume_capabilities != TPACPI_VOL_CAP_AUTO)
7761 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER,
7762 "using user-supplied volume_capabilities=%d\n",
7763 volume_capabilities);
7764
329e4e18
HMH		 7765 if (volume_mode == TPACPI_VOL_MODE_AUTO ||
7766 volume_mode == TPACPI_VOL_MODE_MAX) {
7767 volume_mode = TPACPI_VOL_MODE_ECNVRAM;
7768
7769 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER,
7770 "driver auto-selected volume_mode=%d\n",
7771 volume_mode);
7772 } else {
7773 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER,
7774 "using user-supplied volume_mode=%d\n",
7775 volume_mode);
7776 }
7777
7778 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER,
a112ceee
HMH		 7779 "mute is supported, volume control is %s\n",
7780 str_supported(!tp_features.mixer_no_level_control));
329e4e18 7781
9a417ec0
AL		 7782 if (software_mute_requested && volume_set_software_mute(true) == 0) {
7783 software_mute_active = true;
7784 } else {
7785 rc = volume_create_alsa_mixer();
7786 if (rc) {
7787 pr_err("Could not create the ALSA mixer interface\n");
7788 return rc;
7789 }
0d204c34 7790
9a417ec0
AL		 7791 pr_info("Console audio control enabled, mode: %s\n",
7792 (volume_control_allowed) ?
7793 "override (read/write)" :
7794 "monitor (read only)");
7795 }
c7ac6291 7796
0d204c34
HMH		 7797 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER,
7798 "registering volume hotkeys as change notification\n");
7799 tpacpi_hotkey_driver_mask_set(hotkey_driver_mask
7800 | TP_ACPI_HKEY_VOLUP_MASK
7801 | TP_ACPI_HKEY_VOLDWN_MASK
7802 | TP_ACPI_HKEY_MUTE_MASK);
7803
329e4e18
HMH		 7804 return 0;
7805}
f74a27d4 7806
887965e6 7807static int volume_read(struct seq_file *m)
78f81cc4 7808{
329e4e18 7809 u8 status;
78f81cc4 7810
329e4e18 7811 if (volume_get_status(&status) < 0) {
887965e6 7812 seq_printf(m, "level:\t\tunreadable\n");
78f81cc4 7813 } else {
a112ceee 7814 if (tp_features.mixer_no_level_control)
887965e6 7815 seq_printf(m, "level:\t\tunsupported\n");
a112ceee 7816 else
887965e6 7817 seq_printf(m, "level:\t\t%d\n",
a112ceee
HMH		 7818 status & TP_EC_AUDIO_LVL_MSK);
7819
887965e6 7820 seq_printf(m, "mute:\t\t%s\n",
329e4e18 7821 onoff(status, TP_EC_AUDIO_MUTESW));
a112ceee 7822
c7ac6291 7823 if (volume_control_allowed) {
887965e6 7824 seq_printf(m, "commands:\tunmute, mute\n");
c7ac6291 7825 if (!tp_features.mixer_no_level_control) {
5cac62ac
AS		 7826 seq_printf(m, "commands:\tup, down\n");
7827 seq_printf(m, "commands:\tlevel <level> (<level> is 0-%d)\n",
7828 TP_EC_VOLUME_MAX);
c7ac6291 7829 }
78f81cc4
BD		 7830 }
7831 }
7832
7833 return 0;
7834}
7835
78f81cc4
BD		 7836static int volume_write(char *buf)
7837{
329e4e18
HMH		 7838 u8 s;
7839 u8 new_level, new_mute;
7840 int l;
78f81cc4 7841 char *cmd;
329e4e18 7842 int rc;
78f81cc4 7843
c7ac6291
HMH		 7844 /*
7845 * We do allow volume control at driver startup, so that the
7846 * user can set initial state through the volume=... parameter hack.
7847 */
7848 if (!volume_control_allowed && tpacpi_lifecycle != TPACPI_LIFE_INIT) {
7849 if (unlikely(!tp_warned.volume_ctrl_forbidden)) {
7850 tp_warned.volume_ctrl_forbidden = 1;
5cac62ac
AS		 7851 pr_notice("Console audio control in monitor mode, changes are not allowed\n");
7852 pr_notice("Use the volume_control=1 module parameter to enable volume control\n");
c7ac6291
HMH		 7853 }
7854 return -EPERM;
7855 }
7856
329e4e18
HMH		 7857 rc = volume_get_status(&s);
7858 if (rc < 0)
7859 return rc;
78f81cc4 7860
329e4e18
HMH		 7861 new_level = s & TP_EC_AUDIO_LVL_MSK;
7862 new_mute = s & TP_EC_AUDIO_MUTESW_MSK;
7863
7864 while ((cmd = next_cmd(&buf))) {
a112ceee
HMH		 7865 if (!tp_features.mixer_no_level_control) {
7866 if (strlencmp(cmd, "up") == 0) {
7867 if (new_mute)
7868 new_mute = 0;
7869 else if (new_level < TP_EC_VOLUME_MAX)
7870 new_level++;
7871 continue;
7872 } else if (strlencmp(cmd, "down") == 0) {
7873 if (new_mute)
7874 new_mute = 0;
7875 else if (new_level > 0)
7876 new_level--;
7877 continue;
7878 } else if (sscanf(cmd, "level %u", &l) == 1 &&
7879 l >= 0 && l <= TP_EC_VOLUME_MAX) {
7880 new_level = l;
7881 continue;
7882 }
7883 }
7884 if (strlencmp(cmd, "mute") == 0)
329e4e18 7885 new_mute = TP_EC_AUDIO_MUTESW_MSK;
a112ceee
HMH		 7886 else if (strlencmp(cmd, "unmute") == 0)
7887 new_mute = 0;
7888 else
1da177e4 7889 return -EINVAL;
329e4e18 7890 }
1da177e4 7891
a112ceee
HMH		 7892 if (tp_features.mixer_no_level_control) {
7893 tpacpi_disclose_usertask("procfs volume", "%smute\n",
7894 new_mute ? "" : "un");
7895 rc = volume_set_mute(!!new_mute);
7896 } else {
7897 tpacpi_disclose_usertask("procfs volume",
7898 "%smute and set level to %d\n",
7899 new_mute ? "" : "un", new_level);
7900 rc = volume_set_status(new_mute | new_level);
7901 }
0d204c34 7902 volume_alsa_notify_change();
78f81cc4 7903
329e4e18 7904 return (rc == -EINTR) ? -ERESTARTSYS : rc;
78f81cc4
BD		 7905}
7906
a5763f22
HMH		 7907static struct ibm_struct volume_driver_data = {
7908 .name = "volume",
7909 .read = volume_read,
7910 .write = volume_write,
329e4e18
HMH		 7911 .exit = volume_exit,
7912 .suspend = volume_suspend,
0d204c34 7913 .resume = volume_resume,
329e4e18 7914 .shutdown = volume_shutdown,
a5763f22 7915};
56b6aeb0 7916
ff850c33
HMH		 7917#else /* !CONFIG_THINKPAD_ACPI_ALSA_SUPPORT */
7918
7919#define alsa_card NULL
7920
bb55a2ee 7921static inline void volume_alsa_notify_change(void)
ff850c33
HMH		 7922{
7923}
7924
7925static int __init volume_init(struct ibm_init_struct *iibm)
7926{
0978e012 7927 pr_info("volume: disabled as there is no ALSA support in this kernel\n");
ff850c33
HMH		 7928
7929 return 1;
7930}
7931
7932static struct ibm_struct volume_driver_data = {
7933 .name = "volume",
7934};
7935
7936#endif /* CONFIG_THINKPAD_ACPI_ALSA_SUPPORT */
7937
56b6aeb0
HMH		 7938/*************************************************************************
7939 * Fan subdriver
7940 */
7941
7942/*
7943 * FAN ACCESS MODES
7944 *
efa27145 7945 * TPACPI_FAN_RD_ACPI_GFAN:
56b6aeb0
HMH		 7946 * ACPI GFAN method: returns fan level
7947 *
efa27145 7948 * see TPACPI_FAN_WR_ACPI_SFAN
f51d1a39 7949 * EC 0x2f (HFSP) not available if GFAN exists
56b6aeb0 7950 *
efa27145 7951 * TPACPI_FAN_WR_ACPI_SFAN:
56b6aeb0
HMH		 7952 * ACPI SFAN method: sets fan level, 0 (stop) to 7 (max)
7953 *
f51d1a39
HMH		 7954 * EC 0x2f (HFSP) might be available *for reading*, but do not use
7955 * it for writing.
56b6aeb0 7956 *
efa27145 7957 * TPACPI_FAN_WR_TPEC:
f51d1a39
HMH		 7958 * ThinkPad EC register 0x2f (HFSP): fan control loop mode
7959 * Supported on almost all ThinkPads
56b6aeb0
HMH		 7960 *
7961 * Fan speed changes of any sort (including those caused by the
7962 * disengaged mode) are usually done slowly by the firmware as the
9ddc5b6f 7963 * maximum amount of fan duty cycle change per second seems to be
56b6aeb0
HMH		 7964 * limited.
7965 *
7966 * Reading is not available if GFAN exists.
7967 * Writing is not available if SFAN exists.
7968 *
7969 * Bits
7970 * 7 automatic mode engaged;
7971 * (default operation mode of the ThinkPad)
7972 * fan level is ignored in this mode.
f51d1a39 7973 * 6 full speed mode (takes precedence over bit 7);
56b6aeb0 7974 * not available on all thinkpads. May disable
f51d1a39
HMH		 7975 * the tachometer while the fan controller ramps up
7976 * the speed (which can take up to a few *minutes*).
7977 * Speeds up fan to 100% duty-cycle, which is far above
7978 * the standard RPM levels. It is not impossible that
7979 * it could cause hardware damage.
56b6aeb0
HMH		 7980 * 5-3 unused in some models. Extra bits for fan level
7981 * in others, but still useless as all values above
7982 * 7 map to the same speed as level 7 in these models.
7983 * 2-0 fan level (0..7 usually)
7984 * 0x00 = stop
7985 * 0x07 = max (set when temperatures critical)
7986 * Some ThinkPads may have other levels, see
efa27145 7987 * TPACPI_FAN_WR_ACPI_FANS (X31/X40/X41)
56b6aeb0
HMH		 7988 *
7989 * FIRMWARE BUG: on some models, EC 0x2f might not be initialized at
b595076a 7990 * boot. Apparently the EC does not initialize it, so unless ACPI DSDT
56b6aeb0
HMH		 7991 * does so, its initial value is meaningless (0x07).
7992 *
7993 * For firmware bugs, refer to:
7994 * http://thinkwiki.org/wiki/Embedded_Controller_Firmware#Firmware_Issues
7995 *
7996 * ----
7997 *
7998 * ThinkPad EC register 0x84 (LSB), 0x85 (MSB):
7999 * Main fan tachometer reading (in RPM)
8000 *
8001 * This register is present on all ThinkPads with a new-style EC, and
8002 * it is known not to be present on the A21m/e, and T22, as there is
8003 * something else in offset 0x84 according to the ACPI DSDT. Other
8004 * ThinkPads from this same time period (and earlier) probably lack the
8005 * tachometer as well.
8006 *
877d0310 8007 * Unfortunately a lot of ThinkPads with new-style ECs but whose firmware
56b6aeb0
HMH		 8008 * was never fixed by IBM to report the EC firmware version string
8009 * probably support the tachometer (like the early X models), so
8010 * detecting it is quite hard. We need more data to know for sure.
8011 *
8012 * FIRMWARE BUG: always read 0x84 first, otherwise incorrect readings
8013 * might result.
8014 *
f51d1a39
HMH		 8015 * FIRMWARE BUG: may go stale while the EC is switching to full speed
8016 * mode.
56b6aeb0
HMH		 8017 *
8018 * For firmware bugs, refer to:
8019 * http://thinkwiki.org/wiki/Embedded_Controller_Firmware#Firmware_Issues
8020 *
d7377247
HMH		 8021 * ----
8022 *
8023 * ThinkPad EC register 0x31 bit 0 (only on select models)
8024 *
8025 * When bit 0 of EC register 0x31 is zero, the tachometer registers
8026 * show the speed of the main fan. When bit 0 of EC register 0x31
8027 * is one, the tachometer registers show the speed of the auxiliary
8028 * fan.
8029 *
8030 * Fan control seems to affect both fans, regardless of the state
8031 * of this bit.
8032 *
8033 * So far, only the firmware for the X60/X61 non-tablet versions
8034 * seem to support this (firmware TP-7M).
8035 *
efa27145 8036 * TPACPI_FAN_WR_ACPI_FANS:
56b6aeb0
HMH		 8037 * ThinkPad X31, X40, X41. Not available in the X60.
8038 *
8039 * FANS ACPI handle: takes three arguments: low speed, medium speed,
8040 * high speed. ACPI DSDT seems to map these three speeds to levels
8041 * as follows: STOP LOW LOW MED MED HIGH HIGH HIGH HIGH
8042 * (this map is stored on FAN0..FAN8 as "0,1,1,2,2,3,3,3,3")
8043 *
8044 * The speeds are stored on handles
8045 * (FANA:FAN9), (FANC:FANB), (FANE:FAND).
8046 *
af901ca1 8047 * There are three default speed sets, accessible as handles:
56b6aeb0
HMH		 8048 * FS1L,FS1M,FS1H; FS2L,FS2M,FS2H; FS3L,FS3M,FS3H
8049 *
8050 * ACPI DSDT switches which set is in use depending on various
8051 * factors.
8052 *
efa27145 8053 * TPACPI_FAN_WR_TPEC is also available and should be used to
56b6aeb0
HMH		 8054 * command the fan. The X31/X40/X41 seems to have 8 fan levels,
8055 * but the ACPI tables just mention level 7.
8056 */
8057
f74a27d4
HMH		 8058enum { /* Fan control constants */
8059 fan_status_offset = 0x2f, /* EC register 0x2f */
8060 fan_rpm_offset = 0x84, /* EC register 0x84: LSB, 0x85 MSB (RPM)
8061 * 0x84 must be read before 0x85 */
d7377247
HMH		 8062 fan_select_offset = 0x31, /* EC register 0x31 (Firmware 7M)
8063 bit 0 selects which fan is active */
f74a27d4
HMH		 8064
8065 TP_EC_FAN_FULLSPEED = 0x40, /* EC fan mode: full speed */
8066 TP_EC_FAN_AUTO = 0x80, /* EC fan mode: auto fan control */
8067
8068 TPACPI_FAN_LAST_LEVEL = 0x100, /* Use cached last-seen fan level */
8069};
8070
8071enum fan_status_access_mode {
8072 TPACPI_FAN_NONE = 0, /* No fan status or control */
8073 TPACPI_FAN_RD_ACPI_GFAN, /* Use ACPI GFAN */
8074 TPACPI_FAN_RD_TPEC, /* Use ACPI EC regs 0x2f, 0x84-0x85 */
8075};
8076
8077enum fan_control_access_mode {
8078 TPACPI_FAN_WR_NONE = 0, /* No fan control */
8079 TPACPI_FAN_WR_ACPI_SFAN, /* Use ACPI SFAN */
8080 TPACPI_FAN_WR_TPEC, /* Use ACPI EC reg 0x2f */
8081 TPACPI_FAN_WR_ACPI_FANS, /* Use ACPI FANS and EC reg 0x2f */
8082};
8083
8084enum fan_control_commands {
8085 TPACPI_FAN_CMD_SPEED = 0x0001, /* speed command */
8086 TPACPI_FAN_CMD_LEVEL = 0x0002, /* level command */
8087 TPACPI_FAN_CMD_ENABLE = 0x0004, /* enable/disable cmd,
8088 * and also watchdog cmd */
8089};
8090
90ab5ee9 8091static bool fan_control_allowed;
f74a27d4 8092
69ba91cb
HMH		 8093static enum fan_status_access_mode fan_status_access_mode;
8094static enum fan_control_access_mode fan_control_access_mode;
8095static enum fan_control_commands fan_control_commands;
78f81cc4 8096
778b4d74 8097static u8 fan_control_initial_status;
fe98a52c 8098static u8 fan_control_desired_level;
0081b162 8099static u8 fan_control_resume_level;
f74a27d4
HMH		 8100static int fan_watchdog_maxinterval;
8101
8102static struct mutex fan_mutex;
778b4d74 8103
25c68a33 8104static void fan_watchdog_fire(struct work_struct *ignored);
25c68a33 8105static DECLARE_DELAYED_WORK(fan_watchdog_task, fan_watchdog_fire);
16663a87 8106
e0c7dfe7
HMH		 8107TPACPI_HANDLE(fans, ec, "FANS"); /* X31, X40, X41 */
8108TPACPI_HANDLE(gfan, ec, "GFAN", /* 570 */
56b6aeb0
HMH		 8109 "\\FSPD", /* 600e/x, 770e, 770x */
8110 ); /* all others */
e0c7dfe7 8111TPACPI_HANDLE(sfan, ec, "SFAN", /* 570 */
56b6aeb0
HMH		 8112 "JFNS", /* 770x-JL */
8113 ); /* all others */
8114
1c2ece75
HMH		 8115/*
8116 * Unitialized HFSP quirk: ACPI DSDT and EC fail to initialize the
8117 * HFSP register at boot, so it contains 0x07 but the Thinkpad could
8118 * be in auto mode (0x80).
8119 *
8120 * This is corrected by any write to HFSP either by the driver, or
8121 * by the firmware.
8122 *
8123 * We assume 0x07 really means auto mode while this quirk is active,
8124 * as this is far more likely than the ThinkPad being in level 7,
8125 * which is only used by the firmware during thermal emergencies.
7d95a3d5
HMH		 8126 *
8127 * Enable for TP-1Y (T43), TP-78 (R51e), TP-76 (R52),
8128 * TP-70 (T43, R52), which are known to be buggy.
1c2ece75
HMH		 8129 */
8130
7d95a3d5 8131static void fan_quirk1_setup(void)
1c2ece75 8132{
1c2ece75 8133 if (fan_control_initial_status == 0x07) {
5cac62ac 8134 pr_notice("fan_init: initial fan status is unknown, assuming it is in auto mode\n");
7d95a3d5 8135 tp_features.fan_ctrl_status_undef = 1;
1c2ece75
HMH		 8136 }
8137}
8138
8139static void fan_quirk1_handle(u8 *fan_status)
8140{
8141 if (unlikely(tp_features.fan_ctrl_status_undef)) {
8142 if (*fan_status != fan_control_initial_status) {
8143 /* something changed the HFSP regisnter since
8144 * driver init time, so it is not undefined
8145 * anymore */
8146 tp_features.fan_ctrl_status_undef = 0;
8147 } else {
8148 /* Return most likely status. In fact, it
8149 * might be the only possible status */
8150 *fan_status = TP_EC_FAN_AUTO;
8151 }
8152 }
8153}
8154
d7377247
HMH		 8155/* Select main fan on X60/X61, NOOP on others */
8156static bool fan_select_fan1(void)
8157{
8158 if (tp_features.second_fan) {
8159 u8 val;
8160
8161 if (ec_read(fan_select_offset, &val) < 0)
8162 return false;
8163 val &= 0xFEU;
8164 if (ec_write(fan_select_offset, val) < 0)
8165 return false;
8166 }
8167 return true;
8168}
8169
8170/* Select secondary fan on X60/X61 */
8171static bool fan_select_fan2(void)
8172{
8173 u8 val;
8174
8175 if (!tp_features.second_fan)
8176 return false;
8177
8178 if (ec_read(fan_select_offset, &val) < 0)
8179 return false;
8180 val |= 0x01U;
8181 if (ec_write(fan_select_offset, val) < 0)
8182 return false;
8183
8184 return true;
8185}
8186
fe98a52c 8187/*
b21a15f6 8188 * Call with fan_mutex held
fe98a52c 8189 */
b21a15f6 8190static void fan_update_desired_level(u8 status)
fe98a52c 8191{
b21a15f6
HMH		 8192 if ((status &
8193 (TP_EC_FAN_AUTO | TP_EC_FAN_FULLSPEED)) == 0) {
8194 if (status > 7)
8195 fan_control_desired_level = 7;
8196 else
8197 fan_control_desired_level = status;
8198 }
8199}
fe98a52c 8200
b21a15f6
HMH		 8201static int fan_get_status(u8 *status)
8202{
8203 u8 s;
fe98a52c 8204
b21a15f6
HMH		 8205 /* TODO:
8206 * Add TPACPI_FAN_RD_ACPI_FANS ? */
fe98a52c 8207
b21a15f6 8208 switch (fan_status_access_mode) {
eceeb437 8209 case TPACPI_FAN_RD_ACPI_GFAN: {
b21a15f6 8210 /* 570, 600e/x, 770e, 770x */
eceeb437 8211 int res;
fe98a52c 8212
eceeb437 8213 if (unlikely(!acpi_evalf(gfan_handle, &res, NULL, "d")))
b21a15f6 8214 return -EIO;
fe98a52c 8215
b21a15f6 8216 if (likely(status))
eceeb437 8217 *status = res & 0x07;
fe98a52c 8218
b21a15f6 8219 break;
eceeb437 8220 }
b21a15f6
HMH		 8221 case TPACPI_FAN_RD_TPEC:
8222 /* all except 570, 600e/x, 770e, 770x */
8223 if (unlikely(!acpi_ec_read(fan_status_offset, &s)))
8224 return -EIO;
8225
1c2ece75 8226 if (likely(status)) {
b21a15f6 8227 *status = s;
1c2ece75
HMH		 8228 fan_quirk1_handle(status);
8229 }
fe98a52c 8230
fe98a52c 8231 break;
b21a15f6 8232
fe98a52c 8233 default:
b21a15f6 8234 return -ENXIO;
fe98a52c
HMH		 8235 }
8236
b21a15f6
HMH		 8237 return 0;
8238}
fe98a52c 8239
b21a15f6
HMH		 8240static int fan_get_status_safe(u8 *status)
8241{
8242 int rc;
8243 u8 s;
fe98a52c 8244
7646ea88 8245 if (mutex_lock_killable(&fan_mutex))
b21a15f6
HMH		 8246 return -ERESTARTSYS;
8247 rc = fan_get_status(&s);
8248 if (!rc)
8249 fan_update_desired_level(s);
8250 mutex_unlock(&fan_mutex);
fe98a52c 8251
a7718360
DC		 8252 if (rc)
8253 return rc;
b21a15f6
HMH		 8254 if (status)
8255 *status = s;
fe98a52c 8256
a7718360 8257 return 0;
b21a15f6
HMH		 8258}
8259
8260static int fan_get_speed(unsigned int *speed)
fe98a52c 8261{
b21a15f6 8262 u8 hi, lo;
fe98a52c 8263
b21a15f6
HMH		 8264 switch (fan_status_access_mode) {
8265 case TPACPI_FAN_RD_TPEC:
8266 /* all except 570, 600e/x, 770e, 770x */
d7377247
HMH		 8267 if (unlikely(!fan_select_fan1()))
8268 return -EIO;
b21a15f6
HMH		 8269 if (unlikely(!acpi_ec_read(fan_rpm_offset, &lo) ||
8270 !acpi_ec_read(fan_rpm_offset + 1, &hi)))
8271 return -EIO;
fe98a52c 8272
b21a15f6
HMH		 8273 if (likely(speed))
8274 *speed = (hi << 8) | lo;
fe98a52c 8275
b21a15f6 8276 break;
fe98a52c 8277
b21a15f6
HMH		 8278 default:
8279 return -ENXIO;
8280 }
fe98a52c 8281
b21a15f6 8282 return 0;
fe98a52c
HMH		 8283}
8284
d7377247
HMH		 8285static int fan2_get_speed(unsigned int *speed)
8286{
8287 u8 hi, lo;
8288 bool rc;
8289
8290 switch (fan_status_access_mode) {
8291 case TPACPI_FAN_RD_TPEC:
8292 /* all except 570, 600e/x, 770e, 770x */
8293 if (unlikely(!fan_select_fan2()))
8294 return -EIO;
8295 rc = !acpi_ec_read(fan_rpm_offset, &lo) ||
8296 !acpi_ec_read(fan_rpm_offset + 1, &hi);
8297 fan_select_fan1(); /* play it safe */
8298 if (rc)
8299 return -EIO;
8300
8301 if (likely(speed))
8302 *speed = (hi << 8) | lo;
8303
8304 break;
8305
8306 default:
8307 return -ENXIO;
8308 }
8309
8310 return 0;
8311}
8312
b21a15f6 8313static int fan_set_level(int level)
fe98a52c 8314{
b21a15f6
HMH		 8315 if (!fan_control_allowed)
8316 return -EPERM;
fe98a52c 8317
b21a15f6
HMH		 8318 switch (fan_control_access_mode) {
8319 case TPACPI_FAN_WR_ACPI_SFAN:
8320 if (level >= 0 && level <= 7) {
8321 if (!acpi_evalf(sfan_handle, NULL, NULL, "vd", level))
8322 return -EIO;
8323 } else
8324 return -EINVAL;
8325 break;
fe98a52c 8326
b21a15f6
HMH		 8327 case TPACPI_FAN_WR_ACPI_FANS:
8328 case TPACPI_FAN_WR_TPEC:
0081b162
HMH		 8329 if (!(level & TP_EC_FAN_AUTO) &&
8330 !(level & TP_EC_FAN_FULLSPEED) &&
b21a15f6
HMH		 8331 ((level < 0) || (level > 7)))
8332 return -EINVAL;
fe98a52c 8333
b21a15f6
HMH		 8334 /* safety net should the EC not support AUTO
8335 * or FULLSPEED mode bits and just ignore them */
8336 if (level & TP_EC_FAN_FULLSPEED)
8337 level |= 7; /* safety min speed 7 */
547266e4 8338 else if (level & TP_EC_FAN_AUTO)
b21a15f6 8339 level |= 4; /* safety min speed 4 */
fe98a52c 8340
b21a15f6
HMH		 8341 if (!acpi_ec_write(fan_status_offset, level))
8342 return -EIO;
8343 else
8344 tp_features.fan_ctrl_status_undef = 0;
8345 break;
fe98a52c 8346
b21a15f6
HMH		 8347 default:
8348 return -ENXIO;
8349 }
74a60c0f
HMH		 8350
8351 vdbg_printk(TPACPI_DBG_FAN,
8352 "fan control: set fan control register to 0x%02x\n", level);
b21a15f6 8353 return 0;
fe98a52c
HMH		 8354}
8355
b21a15f6 8356static int fan_set_level_safe(int level)
fe98a52c 8357{
b21a15f6 8358 int rc;
fe98a52c 8359
b21a15f6
HMH		 8360 if (!fan_control_allowed)
8361 return -EPERM;
fe98a52c 8362
7646ea88 8363 if (mutex_lock_killable(&fan_mutex))
b21a15f6 8364 return -ERESTARTSYS;
fe98a52c 8365
b21a15f6
HMH		 8366 if (level == TPACPI_FAN_LAST_LEVEL)
8367 level = fan_control_desired_level;
fe98a52c 8368
b21a15f6
HMH		 8369 rc = fan_set_level(level);
8370 if (!rc)
8371 fan_update_desired_level(level);
8372
8373 mutex_unlock(&fan_mutex);
8374 return rc;
fe98a52c
HMH		 8375}
8376
b21a15f6 8377static int fan_set_enable(void)
fe98a52c 8378{
b21a15f6
HMH		 8379 u8 s;
8380 int rc;
fe98a52c 8381
ecf2a80a
HMH		 8382 if (!fan_control_allowed)
8383 return -EPERM;
8384
7646ea88 8385 if (mutex_lock_killable(&fan_mutex))
b21a15f6 8386 return -ERESTARTSYS;
fe98a52c 8387
b21a15f6
HMH		 8388 switch (fan_control_access_mode) {
8389 case TPACPI_FAN_WR_ACPI_FANS:
8390 case TPACPI_FAN_WR_TPEC:
8391 rc = fan_get_status(&s);
8392 if (rc < 0)
8393 break;
fe98a52c 8394
b21a15f6
HMH		 8395 /* Don't go out of emergency fan mode */
8396 if (s != 7) {
8397 s &= 0x07;
8398 s |= TP_EC_FAN_AUTO | 4; /* min fan speed 4 */
8399 }
fe98a52c 8400
b21a15f6
HMH		 8401 if (!acpi_ec_write(fan_status_offset, s))
8402 rc = -EIO;
8403 else {
8404 tp_features.fan_ctrl_status_undef = 0;
8405 rc = 0;
8406 }
8407 break;
fe98a52c 8408
b21a15f6
HMH		 8409 case TPACPI_FAN_WR_ACPI_SFAN:
8410 rc = fan_get_status(&s);
8411 if (rc < 0)
8412 break;
fe98a52c 8413
b21a15f6 8414 s &= 0x07;
fe98a52c 8415
b21a15f6
HMH		 8416 /* Set fan to at least level 4 */
8417 s |= 4;
fe08bc4b 8418
b21a15f6 8419 if (!acpi_evalf(sfan_handle, NULL, NULL, "vd", s))
35ff8b9f 8420 rc = -EIO;
b21a15f6
HMH		 8421 else
8422 rc = 0;
8423 break;
78f81cc4 8424
b21a15f6
HMH		 8425 default:
8426 rc = -ENXIO;
8427 }
5fba344c 8428
b21a15f6 8429 mutex_unlock(&fan_mutex);
74a60c0f
HMH		 8430
8431 if (!rc)
8432 vdbg_printk(TPACPI_DBG_FAN,
8433 "fan control: set fan control register to 0x%02x\n",
8434 s);
b21a15f6 8435 return rc;
69ba91cb 8436}
78f81cc4 8437
b21a15f6 8438static int fan_set_disable(void)
78f81cc4 8439{
b21a15f6 8440 int rc;
c52f0aa5 8441
b21a15f6
HMH		 8442 if (!fan_control_allowed)
8443 return -EPERM;
78f81cc4 8444
7646ea88 8445 if (mutex_lock_killable(&fan_mutex))
b21a15f6 8446 return -ERESTARTSYS;
3ef8a609 8447
b21a15f6
HMH		 8448 rc = 0;
8449 switch (fan_control_access_mode) {
8450 case TPACPI_FAN_WR_ACPI_FANS:
8451 case TPACPI_FAN_WR_TPEC:
8452 if (!acpi_ec_write(fan_status_offset, 0x00))
8453 rc = -EIO;
8454 else {
8455 fan_control_desired_level = 0;
8456 tp_features.fan_ctrl_status_undef = 0;
8457 }
3ef8a609
HMH		 8458 break;
8459
b21a15f6
HMH		 8460 case TPACPI_FAN_WR_ACPI_SFAN:
8461 if (!acpi_evalf(sfan_handle, NULL, NULL, "vd", 0x00))
8462 rc = -EIO;
8463 else
8464 fan_control_desired_level = 0;
c52f0aa5
HMH		 8465 break;
8466
8467 default:
b21a15f6 8468 rc = -ENXIO;
78f81cc4
BD		 8469 }
8470
74a60c0f
HMH		 8471 if (!rc)
8472 vdbg_printk(TPACPI_DBG_FAN,
8473 "fan control: set fan control register to 0\n");
fe98a52c 8474
fe98a52c 8475 mutex_unlock(&fan_mutex);
fe98a52c
HMH		 8476 return rc;
8477}
8478
b21a15f6 8479static int fan_set_speed(int speed)
c52f0aa5 8480{
b21a15f6 8481 int rc;
c52f0aa5 8482
b21a15f6
HMH		 8483 if (!fan_control_allowed)
8484 return -EPERM;
3ef8a609 8485
7646ea88 8486 if (mutex_lock_killable(&fan_mutex))
b21a15f6 8487 return -ERESTARTSYS;
c52f0aa5 8488
b21a15f6
HMH		 8489 rc = 0;
8490 switch (fan_control_access_mode) {
8491 case TPACPI_FAN_WR_ACPI_FANS:
8492 if (speed >= 0 && speed <= 65535) {
8493 if (!acpi_evalf(fans_handle, NULL, NULL, "vddd",
8494 speed, speed, speed))
8495 rc = -EIO;
8496 } else
8497 rc = -EINVAL;
c52f0aa5
HMH		 8498 break;
8499
8500 default:
b21a15f6 8501 rc = -ENXIO;
c52f0aa5
HMH		 8502 }
8503
b21a15f6
HMH		 8504 mutex_unlock(&fan_mutex);
8505 return rc;
16663a87
HMH		 8506}
8507
8508static void fan_watchdog_reset(void)
8509{
4985cd0a
HMH		 8510 if (fan_control_access_mode == TPACPI_FAN_WR_NONE)
8511 return;
8512
8fef502e 8513 if (fan_watchdog_maxinterval > 0 &&
41f63c53
TH		 8514 tpacpi_lifecycle != TPACPI_LIFE_EXITING)
8515 mod_delayed_work(tpacpi_wq, &fan_watchdog_task,
8516 msecs_to_jiffies(fan_watchdog_maxinterval * 1000));
8517 else
8518 cancel_delayed_work(&fan_watchdog_task);
16663a87
HMH		 8519}
8520
b21a15f6 8521static void fan_watchdog_fire(struct work_struct *ignored)
78f81cc4 8522{
b21a15f6 8523 int rc;
18ad7996 8524
b21a15f6
HMH		 8525 if (tpacpi_lifecycle != TPACPI_LIFE_RUNNING)
8526 return;
a12095c2 8527
0978e012 8528 pr_notice("fan watchdog: enabling fan\n");
b21a15f6
HMH		 8529 rc = fan_set_enable();
8530 if (rc < 0) {
5cac62ac
AS		 8531 pr_err("fan watchdog: error %d while enabling fan, will try again later...\n",
8532 rc);
b21a15f6
HMH		 8533 /* reschedule for later */
8534 fan_watchdog_reset();
8535 }
8536}
eaa7571b 8537
b21a15f6
HMH		 8538/*
8539 * SYSFS fan layout: hwmon compatible (device)
8540 *
8541 * pwm*_enable:
8542 * 0: "disengaged" mode
8543 * 1: manual mode
8544 * 2: native EC "auto" mode (recommended, hardware default)
8545 *
8546 * pwm*: set speed in manual mode, ignored otherwise.
8547 * 0 is level 0; 255 is level 7. Intermediate points done with linear
8548 * interpolation.
8549 *
8550 * fan*_input: tachometer reading, RPM
8551 *
8552 *
8553 * SYSFS fan layout: extensions
8554 *
8555 * fan_watchdog (driver):
8556 * fan watchdog interval in seconds, 0 disables (default), max 120
8557 */
8558
8559/* sysfs fan pwm1_enable ----------------------------------------------- */
8560static ssize_t fan_pwm1_enable_show(struct device *dev,
8561 struct device_attribute *attr,
8562 char *buf)
8563{
8564 int res, mode;
8565 u8 status;
8566
8567 res = fan_get_status_safe(&status);
8568 if (res)
8569 return res;
8570
b21a15f6
HMH		 8571 if (status & TP_EC_FAN_FULLSPEED) {
8572 mode = 0;
8573 } else if (status & TP_EC_FAN_AUTO) {
8574 mode = 2;
8575 } else
8576 mode = 1;
8577
8578 return snprintf(buf, PAGE_SIZE, "%d\n", mode);
8579}
a12095c2 8580
b21a15f6
HMH		 8581static ssize_t fan_pwm1_enable_store(struct device *dev,
8582 struct device_attribute *attr,
8583 const char *buf, size_t count)
8584{
8585 unsigned long t;
8586 int res, level;
8587
8588 if (parse_strtoul(buf, 2, &t))
8589 return -EINVAL;
8590
74a60c0f
HMH		 8591 tpacpi_disclose_usertask("hwmon pwm1_enable",
8592 "set fan mode to %lu\n", t);
8593
b21a15f6
HMH		 8594 switch (t) {
8595 case 0:
8596 level = TP_EC_FAN_FULLSPEED;
8597 break;
8598 case 1:
8599 level = TPACPI_FAN_LAST_LEVEL;
8600 break;
8601 case 2:
8602 level = TP_EC_FAN_AUTO;
8603 break;
8604 case 3:
8605 /* reserved for software-controlled auto mode */
8606 return -ENOSYS;
18ad7996 8607 default:
b21a15f6 8608 return -EINVAL;
18ad7996 8609 }
b21a15f6
HMH		 8610
8611 res = fan_set_level_safe(level);
8612 if (res == -ENXIO)
8613 return -EINVAL;
8614 else if (res < 0)
8615 return res;
8616
8617 fan_watchdog_reset();
8618
8619 return count;
18ad7996
HMH		 8620}
8621
5fb73bc2
BM		 8622static DEVICE_ATTR(pwm1_enable, S_IWUSR | S_IRUGO,
8623 fan_pwm1_enable_show, fan_pwm1_enable_store);
b21a15f6
HMH		 8624
8625/* sysfs fan pwm1 ------------------------------------------------------ */
8626static ssize_t fan_pwm1_show(struct device *dev,
8627 struct device_attribute *attr,
8628 char *buf)
fe98a52c 8629{
b21a15f6
HMH		 8630 int res;
8631 u8 status;
fe98a52c 8632
b21a15f6
HMH		 8633 res = fan_get_status_safe(&status);
8634 if (res)
8635 return res;
ecf2a80a 8636
b21a15f6
HMH		 8637 if ((status &
8638 (TP_EC_FAN_AUTO | TP_EC_FAN_FULLSPEED)) != 0)
8639 status = fan_control_desired_level;
fe98a52c 8640
b21a15f6
HMH		 8641 if (status > 7)
8642 status = 7;
fe98a52c 8643
b21a15f6 8644 return snprintf(buf, PAGE_SIZE, "%u\n", (status * 255) / 7);
fe98a52c
HMH		 8645}
8646
b21a15f6
HMH		 8647static ssize_t fan_pwm1_store(struct device *dev,
8648 struct device_attribute *attr,
8649 const char *buf, size_t count)
18ad7996 8650{
b21a15f6 8651 unsigned long s;
1c6a334e 8652 int rc;
b21a15f6 8653 u8 status, newlevel;
1c6a334e 8654
b21a15f6
HMH		 8655 if (parse_strtoul(buf, 255, &s))
8656 return -EINVAL;
8657
74a60c0f
HMH		 8658 tpacpi_disclose_usertask("hwmon pwm1",
8659 "set fan speed to %lu\n", s);
8660
b21a15f6
HMH		 8661 /* scale down from 0-255 to 0-7 */
8662 newlevel = (s >> 5) & 0x07;
ecf2a80a 8663
7646ea88 8664 if (mutex_lock_killable(&fan_mutex))
fc589a3c 8665 return -ERESTARTSYS;
40ca9fdf 8666
b21a15f6
HMH		 8667 rc = fan_get_status(&status);
8668 if (!rc && (status &
8669 (TP_EC_FAN_AUTO | TP_EC_FAN_FULLSPEED)) == 0) {
8670 rc = fan_set_level(newlevel);
8671 if (rc == -ENXIO)
8672 rc = -EINVAL;
8673 else if (!rc) {
8674 fan_update_desired_level(newlevel);
8675 fan_watchdog_reset();
eaa7571b 8676 }
b21a15f6 8677 }
1c6a334e 8678
b21a15f6 8679 mutex_unlock(&fan_mutex);
72a979f0 8680 return (rc) ? rc : count;
b21a15f6 8681}
1c6a334e 8682
5fb73bc2 8683static DEVICE_ATTR(pwm1, S_IWUSR | S_IRUGO, fan_pwm1_show, fan_pwm1_store);
1c6a334e 8684
b21a15f6
HMH		 8685/* sysfs fan fan1_input ------------------------------------------------ */
8686static ssize_t fan_fan1_input_show(struct device *dev,
8687 struct device_attribute *attr,
8688 char *buf)
8689{
8690 int res;
8691 unsigned int speed;
1c6a334e 8692
b21a15f6
HMH		 8693 res = fan_get_speed(&speed);
8694 if (res < 0)
8695 return res;
1c6a334e 8696
b21a15f6
HMH		 8697 return snprintf(buf, PAGE_SIZE, "%u\n", speed);
8698}
18ad7996 8699
5fb73bc2 8700static DEVICE_ATTR(fan1_input, S_IRUGO, fan_fan1_input_show, NULL);
40ca9fdf 8701
d7377247
HMH		 8702/* sysfs fan fan2_input ------------------------------------------------ */
8703static ssize_t fan_fan2_input_show(struct device *dev,
8704 struct device_attribute *attr,
8705 char *buf)
8706{
8707 int res;
8708 unsigned int speed;
8709
8710 res = fan2_get_speed(&speed);
8711 if (res < 0)
8712 return res;
8713
8714 return snprintf(buf, PAGE_SIZE, "%u\n", speed);
8715}
8716
5fb73bc2 8717static DEVICE_ATTR(fan2_input, S_IRUGO, fan_fan2_input_show, NULL);
d7377247 8718
b21a15f6 8719/* sysfs fan fan_watchdog (hwmon driver) ------------------------------- */
ac3054c4 8720static ssize_t fan_watchdog_show(struct device_driver *drv, char *buf)
b21a15f6
HMH		 8721{
8722 return snprintf(buf, PAGE_SIZE, "%u\n", fan_watchdog_maxinterval);
18ad7996
HMH		 8723}
8724
ac3054c4
GKH		 8725static ssize_t fan_watchdog_store(struct device_driver *drv, const char *buf,
8726 size_t count)
18ad7996 8727{
b21a15f6
HMH		 8728 unsigned long t;
8729
8730 if (parse_strtoul(buf, 120, &t))
8731 return -EINVAL;
40ca9fdf 8732
ecf2a80a
HMH		 8733 if (!fan_control_allowed)
8734 return -EPERM;
8735
b21a15f6
HMH		 8736 fan_watchdog_maxinterval = t;
8737 fan_watchdog_reset();
40ca9fdf 8738
74a60c0f
HMH		 8739 tpacpi_disclose_usertask("fan_watchdog", "set to %lu\n", t);
8740
b21a15f6
HMH		 8741 return count;
8742}
ac3054c4 8743static DRIVER_ATTR_RW(fan_watchdog);
b21a15f6
HMH		 8744
8745/* --------------------------------------------------------------------- */
8746static struct attribute *fan_attributes[] = {
5fb73bc2
BM		 8747 &dev_attr_pwm1_enable.attr, &dev_attr_pwm1.attr,
8748 &dev_attr_fan1_input.attr,
d7377247 8749 NULL, /* for fan2_input */
b21a15f6
HMH		 8750 NULL
8751};
8752
8753static const struct attribute_group fan_attr_group = {
8754 .attrs = fan_attributes,
8755};
8756
d7377247
HMH		 8757#define TPACPI_FAN_Q1 0x0001 /* Unitialized HFSP */
8758#define TPACPI_FAN_2FAN 0x0002 /* EC 0x31 bit 0 selects fan2 */
7d95a3d5
HMH		 8759
8760#define TPACPI_FAN_QI(__id1, __id2, __quirks) \
8761 { .vendor = PCI_VENDOR_ID_IBM, \
8762 .bios = TPACPI_MATCH_ANY, \
8763 .ec = TPID(__id1, __id2), \
8764 .quirks = __quirks }
8765
d7377247
HMH		 8766#define TPACPI_FAN_QL(__id1, __id2, __quirks) \
8767 { .vendor = PCI_VENDOR_ID_LENOVO, \
8768 .bios = TPACPI_MATCH_ANY, \
8769 .ec = TPID(__id1, __id2), \
8770 .quirks = __quirks }
8771
7d95a3d5
HMH		 8772static const struct tpacpi_quirk fan_quirk_table[] __initconst = {
8773 TPACPI_FAN_QI('1', 'Y', TPACPI_FAN_Q1),
8774 TPACPI_FAN_QI('7', '8', TPACPI_FAN_Q1),
8775 TPACPI_FAN_QI('7', '6', TPACPI_FAN_Q1),
8776 TPACPI_FAN_QI('7', '0', TPACPI_FAN_Q1),
d7377247 8777 TPACPI_FAN_QL('7', 'M', TPACPI_FAN_2FAN),
7d95a3d5
HMH		 8778};
8779
d7377247 8780#undef TPACPI_FAN_QL
7d95a3d5
HMH		 8781#undef TPACPI_FAN_QI
8782
b21a15f6
HMH		 8783static int __init fan_init(struct ibm_init_struct *iibm)
8784{
8785 int rc;
7d95a3d5 8786 unsigned long quirks;
b21a15f6 8787
74a60c0f
HMH		 8788 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_FAN,
8789 "initializing fan subdriver\n");
b21a15f6
HMH		 8790
8791 mutex_init(&fan_mutex);
8792 fan_status_access_mode = TPACPI_FAN_NONE;
8793 fan_control_access_mode = TPACPI_FAN_WR_NONE;
8794 fan_control_commands = 0;
8795 fan_watchdog_maxinterval = 0;
8796 tp_features.fan_ctrl_status_undef = 0;
d7377247 8797 tp_features.second_fan = 0;
b21a15f6
HMH		 8798 fan_control_desired_level = 7;
8799
e28393c0
HMH		 8800 if (tpacpi_is_ibm()) {
8801 TPACPI_ACPIHANDLE_INIT(fans);
8802 TPACPI_ACPIHANDLE_INIT(gfan);
8803 TPACPI_ACPIHANDLE_INIT(sfan);
8804 }
b21a15f6 8805
7d95a3d5
HMH		 8806 quirks = tpacpi_check_quirks(fan_quirk_table,
8807 ARRAY_SIZE(fan_quirk_table));
8808
b21a15f6
HMH		 8809 if (gfan_handle) {
8810 /* 570, 600e/x, 770e, 770x */
8811 fan_status_access_mode = TPACPI_FAN_RD_ACPI_GFAN;
8812 } else {
8813 /* all other ThinkPads: note that even old-style
8814 * ThinkPad ECs supports the fan control register */
8815 if (likely(acpi_ec_read(fan_status_offset,
8816 &fan_control_initial_status))) {
8817 fan_status_access_mode = TPACPI_FAN_RD_TPEC;
7d95a3d5
HMH		 8818 if (quirks & TPACPI_FAN_Q1)
8819 fan_quirk1_setup();
d7377247
HMH		 8820 if (quirks & TPACPI_FAN_2FAN) {
8821 tp_features.second_fan = 1;
8822 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_FAN,
8823 "secondary fan support enabled\n");
8824 }
b21a15f6 8825 } else {
5cac62ac 8826 pr_err("ThinkPad ACPI EC access misbehaving, fan status and control unavailable\n");
b21a15f6
HMH		 8827 return 1;
8828 }
8829 }
8830
8831 if (sfan_handle) {
8832 /* 570, 770x-JL */
8833 fan_control_access_mode = TPACPI_FAN_WR_ACPI_SFAN;
8834 fan_control_commands |=
8835 TPACPI_FAN_CMD_LEVEL | TPACPI_FAN_CMD_ENABLE;
8836 } else {
8837 if (!gfan_handle) {
8838 /* gfan without sfan means no fan control */
8839 /* all other models implement TP EC 0x2f control */
8840
8841 if (fans_handle) {
8842 /* X31, X40, X41 */
8843 fan_control_access_mode =
8844 TPACPI_FAN_WR_ACPI_FANS;
8845 fan_control_commands |=
8846 TPACPI_FAN_CMD_SPEED |
8847 TPACPI_FAN_CMD_LEVEL |
8848 TPACPI_FAN_CMD_ENABLE;
8849 } else {
8850 fan_control_access_mode = TPACPI_FAN_WR_TPEC;
8851 fan_control_commands |=
8852 TPACPI_FAN_CMD_LEVEL |
8853 TPACPI_FAN_CMD_ENABLE;
8854 }
fe98a52c 8855 }
b21a15f6 8856 }
18ad7996 8857
74a60c0f
HMH		 8858 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_FAN,
8859 "fan is %s, modes %d, %d\n",
b21a15f6
HMH		 8860 str_supported(fan_status_access_mode != TPACPI_FAN_NONE ||
8861 fan_control_access_mode != TPACPI_FAN_WR_NONE),
8862 fan_status_access_mode, fan_control_access_mode);
1c6a334e 8863
b21a15f6
HMH		 8864 /* fan control master switch */
8865 if (!fan_control_allowed) {
8866 fan_control_access_mode = TPACPI_FAN_WR_NONE;
8867 fan_control_commands = 0;
74a60c0f 8868 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_FAN,
b21a15f6 8869 "fan control features disabled by parameter\n");
18ad7996 8870 }
40ca9fdf 8871
b21a15f6
HMH		 8872 /* update fan_control_desired_level */
8873 if (fan_status_access_mode != TPACPI_FAN_NONE)
8874 fan_get_status_safe(NULL);
fe98a52c 8875
b21a15f6
HMH		 8876 if (fan_status_access_mode != TPACPI_FAN_NONE ||
8877 fan_control_access_mode != TPACPI_FAN_WR_NONE) {
d7377247
HMH		 8878 if (tp_features.second_fan) {
8879 /* attach second fan tachometer */
8880 fan_attributes[ARRAY_SIZE(fan_attributes)-2] =
5fb73bc2 8881 &dev_attr_fan2_input.attr;
d7377247 8882 }
6b99e356 8883 rc = sysfs_create_group(&tpacpi_hwmon->kobj,
b21a15f6 8884 &fan_attr_group);
b21a15f6
HMH		 8885 if (rc < 0)
8886 return rc;
9c0a76e1
HMH		 8887
8888 rc = driver_create_file(&tpacpi_hwmon_pdriver.driver,
8889 &driver_attr_fan_watchdog);
8890 if (rc < 0) {
6b99e356 8891 sysfs_remove_group(&tpacpi_hwmon->kobj,
9c0a76e1
HMH		 8892 &fan_attr_group);
8893 return rc;
8894 }
b21a15f6
HMH		 8895 return 0;
8896 } else
8897 return 1;
56b6aeb0
HMH		 8898}
8899
b21a15f6 8900static void fan_exit(void)
56b6aeb0 8901{
74a60c0f 8902 vdbg_printk(TPACPI_DBG_EXIT | TPACPI_DBG_FAN,
35ff8b9f 8903 "cancelling any pending fan watchdog tasks\n");
56b6aeb0 8904
b21a15f6 8905 /* FIXME: can we really do this unconditionally? */
6b99e356 8906 sysfs_remove_group(&tpacpi_hwmon->kobj, &fan_attr_group);
35ff8b9f
HMH		 8907 driver_remove_file(&tpacpi_hwmon_pdriver.driver,
8908 &driver_attr_fan_watchdog);
40ca9fdf 8909
b21a15f6 8910 cancel_delayed_work(&fan_watchdog_task);
e0e3c061 8911 flush_workqueue(tpacpi_wq);
56b6aeb0
HMH		 8912}
8913
fd3c3a42 8914static void fan_suspend(void)
75700e53 8915{
0081b162
HMH		 8916 int rc;
8917
75700e53
HMH		 8918 if (!fan_control_allowed)
8919 return;
8920
8921 /* Store fan status in cache */
0081b162
HMH		 8922 fan_control_resume_level = 0;
8923 rc = fan_get_status_safe(&fan_control_resume_level);
8924 if (rc < 0)
5cac62ac
AS		 8925 pr_notice("failed to read fan level for later restore during resume: %d\n",
8926 rc);
0081b162
HMH		 8927
8928 /* if it is undefined, don't attempt to restore it.
8929 * KEEP THIS LAST */
75700e53 8930 if (tp_features.fan_ctrl_status_undef)
0081b162 8931 fan_control_resume_level = 0;
75700e53
HMH		 8932}
8933
8934static void fan_resume(void)
8935{
75700e53
HMH		 8936 u8 current_level = 7;
8937 bool do_set = false;
0081b162 8938 int rc;
75700e53
HMH		 8939
8940 /* DSDT *always* updates status on resume */
8941 tp_features.fan_ctrl_status_undef = 0;
8942
75700e53 8943 if (!fan_control_allowed ||
0081b162 8944 !fan_control_resume_level ||
75700e53
HMH		 8945 (fan_get_status_safe(&current_level) < 0))
8946 return;
8947
8948 switch (fan_control_access_mode) {
8949 case TPACPI_FAN_WR_ACPI_SFAN:
0081b162
HMH		 8950 /* never decrease fan level */
8951 do_set = (fan_control_resume_level > current_level);
75700e53
HMH		 8952 break;
8953 case TPACPI_FAN_WR_ACPI_FANS:
8954 case TPACPI_FAN_WR_TPEC:
0081b162
HMH		 8955 /* never decrease fan level, scale is:
8956 * TP_EC_FAN_FULLSPEED > 7 >= TP_EC_FAN_AUTO
8957 *
8958 * We expect the firmware to set either 7 or AUTO, but we
8959 * handle FULLSPEED out of paranoia.
8960 *
8961 * So, we can safely only restore FULLSPEED or 7, anything
8962 * else could slow the fan. Restoring AUTO is useless, at
8963 * best that's exactly what the DSDT already set (it is the
8964 * slower it uses).
8965 *
8966 * Always keep in mind that the DSDT *will* have set the
8967 * fans to what the vendor supposes is the best level. We
8968 * muck with it only to speed the fan up.
8969 */
8970 if (fan_control_resume_level != 7 &&
8971 !(fan_control_resume_level & TP_EC_FAN_FULLSPEED))
8972 return;
8973 else
8974 do_set = !(current_level & TP_EC_FAN_FULLSPEED) &&
8975 (current_level != fan_control_resume_level);
75700e53
HMH		 8976 break;
8977 default:
8978 return;
8979 }
8980 if (do_set) {
0978e012
JP		 8981 pr_notice("restoring fan level to 0x%02x\n",
8982 fan_control_resume_level);
0081b162
HMH		 8983 rc = fan_set_level_safe(fan_control_resume_level);
8984 if (rc < 0)
0978e012 8985 pr_notice("failed to restore fan level: %d\n", rc);
75700e53
HMH		 8986 }
8987}
8988
887965e6 8989static int fan_read(struct seq_file *m)
56b6aeb0 8990{
56b6aeb0
HMH		 8991 int rc;
8992 u8 status;
8993 unsigned int speed = 0;
8994
8995 switch (fan_status_access_mode) {
efa27145 8996 case TPACPI_FAN_RD_ACPI_GFAN:
56b6aeb0 8997 /* 570, 600e/x, 770e, 770x */
35ff8b9f
HMH		 8998 rc = fan_get_status_safe(&status);
8999 if (rc < 0)
56b6aeb0
HMH		 9000 return rc;
9001
887965e6 9002 seq_printf(m, "status:\t\t%s\n"
56b6aeb0
HMH		 9003 "level:\t\t%d\n",
9004 (status != 0) ? "enabled" : "disabled", status);
9005 break;
9006
efa27145 9007 case TPACPI_FAN_RD_TPEC:
56b6aeb0 9008 /* all except 570, 600e/x, 770e, 770x */
35ff8b9f
HMH		 9009 rc = fan_get_status_safe(&status);
9010 if (rc < 0)
56b6aeb0
HMH		 9011 return rc;
9012
887965e6 9013 seq_printf(m, "status:\t\t%s\n",
56b6aeb0
HMH		 9014 (status != 0) ? "enabled" : "disabled");
9015
35ff8b9f
HMH		 9016 rc = fan_get_speed(&speed);
9017 if (rc < 0)
56b6aeb0
HMH		 9018 return rc;
9019
887965e6 9020 seq_printf(m, "speed:\t\t%d\n", speed);
56b6aeb0 9021
efa27145 9022 if (status & TP_EC_FAN_FULLSPEED)
56b6aeb0 9023 /* Disengaged mode takes precedence */
887965e6 9024 seq_printf(m, "level:\t\tdisengaged\n");
efa27145 9025 else if (status & TP_EC_FAN_AUTO)
887965e6 9026 seq_printf(m, "level:\t\tauto\n");
56b6aeb0 9027 else
887965e6 9028 seq_printf(m, "level:\t\t%d\n", status);
56b6aeb0
HMH		 9029 break;
9030
efa27145 9031 case TPACPI_FAN_NONE:
56b6aeb0 9032 default:
887965e6 9033 seq_printf(m, "status:\t\tnot supported\n");
56b6aeb0
HMH		 9034 }
9035
efa27145 9036 if (fan_control_commands & TPACPI_FAN_CMD_LEVEL) {
887965e6 9037 seq_printf(m, "commands:\tlevel <level>");
56b6aeb0
HMH		 9038
9039 switch (fan_control_access_mode) {
efa27145 9040 case TPACPI_FAN_WR_ACPI_SFAN:
887965e6 9041 seq_printf(m, " (<level> is 0-7)\n");
56b6aeb0
HMH		 9042 break;
9043
9044 default:
5cac62ac 9045 seq_printf(m, " (<level> is 0-7, auto, disengaged, full-speed)\n");
56b6aeb0
HMH		 9046 break;
9047 }
9048 }
18ad7996 9049
efa27145 9050 if (fan_control_commands & TPACPI_FAN_CMD_ENABLE)
887965e6 9051 seq_printf(m, "commands:\tenable, disable\n"
5cac62ac 9052 "commands:\twatchdog <timeout> (<timeout> is 0 (off), 1-120 (seconds))\n");
1da177e4 9053
efa27145 9054 if (fan_control_commands & TPACPI_FAN_CMD_SPEED)
5cac62ac 9055 seq_printf(m, "commands:\tspeed <speed> (<speed> is 0-65535)\n");
56b6aeb0 9056
887965e6 9057 return 0;
78f81cc4
BD		 9058}
9059
18ad7996
HMH		 9060static int fan_write_cmd_level(const char *cmd, int *rc)
9061{
9062 int level;
9063
a12095c2 9064 if (strlencmp(cmd, "level auto") == 0)
efa27145 9065 level = TP_EC_FAN_AUTO;
fe98a52c 9066 else if ((strlencmp(cmd, "level disengaged") == 0) |
35ff8b9f 9067 (strlencmp(cmd, "level full-speed") == 0))
efa27145 9068 level = TP_EC_FAN_FULLSPEED;
a12095c2 9069 else if (sscanf(cmd, "level %d", &level) != 1)
18ad7996
HMH		 9070 return 0;
9071
35ff8b9f
HMH		 9072 *rc = fan_set_level_safe(level);
9073 if (*rc == -ENXIO)
0978e012
JP		 9074 pr_err("level command accepted for unsupported access mode %d\n",
9075 fan_control_access_mode);
74a60c0f
HMH		 9076 else if (!*rc)
9077 tpacpi_disclose_usertask("procfs fan",
9078 "set level to %d\n", level);
18ad7996
HMH		 9079
9080 return 1;
9081}
9082
9083static int fan_write_cmd_enable(const char *cmd, int *rc)
9084{
9085 if (strlencmp(cmd, "enable") != 0)
9086 return 0;
9087
35ff8b9f
HMH		 9088 *rc = fan_set_enable();
9089 if (*rc == -ENXIO)
0978e012
JP		 9090 pr_err("enable command accepted for unsupported access mode %d\n",
9091 fan_control_access_mode);
74a60c0f
HMH		 9092 else if (!*rc)
9093 tpacpi_disclose_usertask("procfs fan", "enable\n");
18ad7996
HMH		 9094
9095 return 1;
9096}
9097
9098static int fan_write_cmd_disable(const char *cmd, int *rc)
9099{
9100 if (strlencmp(cmd, "disable") != 0)
9101 return 0;
9102
35ff8b9f
HMH		 9103 *rc = fan_set_disable();
9104 if (*rc == -ENXIO)
0978e012
JP		 9105 pr_err("disable command accepted for unsupported access mode %d\n",
9106 fan_control_access_mode);
74a60c0f
HMH		 9107 else if (!*rc)
9108 tpacpi_disclose_usertask("procfs fan", "disable\n");
18ad7996
HMH		 9109
9110 return 1;
9111}
9112
9113static int fan_write_cmd_speed(const char *cmd, int *rc)
9114{
9115 int speed;
9116
a8b7a662
HMH		 9117 /* TODO:
9118 * Support speed <low> <medium> <high> ? */
9119
18ad7996
HMH		 9120 if (sscanf(cmd, "speed %d", &speed) != 1)
9121 return 0;
9122
35ff8b9f
HMH		 9123 *rc = fan_set_speed(speed);
9124 if (*rc == -ENXIO)
0978e012
JP		 9125 pr_err("speed command accepted for unsupported access mode %d\n",
9126 fan_control_access_mode);
74a60c0f
HMH		 9127 else if (!*rc)
9128 tpacpi_disclose_usertask("procfs fan",
9129 "set speed to %d\n", speed);
18ad7996
HMH		 9130
9131 return 1;
9132}
9133
16663a87
HMH		 9134static int fan_write_cmd_watchdog(const char *cmd, int *rc)
9135{
9136 int interval;
9137
9138 if (sscanf(cmd, "watchdog %d", &interval) != 1)
9139 return 0;
9140
9141 if (interval < 0 || interval > 120)
9142 *rc = -EINVAL;
74a60c0f 9143 else {
16663a87 9144 fan_watchdog_maxinterval = interval;
74a60c0f
HMH		 9145 tpacpi_disclose_usertask("procfs fan",
9146 "set watchdog timer to %d\n",
9147 interval);
9148 }
16663a87
HMH		 9149
9150 return 1;
9151}
9152
18ad7996
HMH		 9153static int fan_write(char *buf)
9154{
9155 char *cmd;
9156 int rc = 0;
9157
9158 while (!rc && (cmd = next_cmd(&buf))) {
efa27145 9159 if (!((fan_control_commands & TPACPI_FAN_CMD_LEVEL) &&
18ad7996 9160 fan_write_cmd_level(cmd, &rc)) &&
efa27145 9161 !((fan_control_commands & TPACPI_FAN_CMD_ENABLE) &&
18ad7996 9162 (fan_write_cmd_enable(cmd, &rc) ||
16663a87
HMH		 9163 fan_write_cmd_disable(cmd, &rc) ||
9164 fan_write_cmd_watchdog(cmd, &rc))) &&
efa27145 9165 !((fan_control_commands & TPACPI_FAN_CMD_SPEED) &&
18ad7996
HMH		 9166 fan_write_cmd_speed(cmd, &rc))
9167 )
9168 rc = -EINVAL;
16663a87
HMH		 9169 else if (!rc)
9170 fan_watchdog_reset();
18ad7996
HMH		 9171 }
9172
9173 return rc;
9174}
9175
a5763f22
HMH		 9176static struct ibm_struct fan_driver_data = {
9177 .name = "fan",
9178 .read = fan_read,
9179 .write = fan_write,
9180 .exit = fan_exit,
75700e53
HMH		 9181 .suspend = fan_suspend,
9182 .resume = fan_resume,
a5763f22
HMH		 9183};
9184
420f9739
DH		 9185/*************************************************************************
9186 * Mute LED subdriver
9187 */
9188
9189
9190struct tp_led_table {
9191 acpi_string name;
9192 int on_value;
9193 int off_value;
9194 int state;
9195};
9196
9197static struct tp_led_table led_tables[] = {
9198 [TPACPI_LED_MUTE] = {
9199 .name = "SSMS",
9200 .on_value = 1,
9201 .off_value = 0,
9202 },
9203 [TPACPI_LED_MICMUTE] = {
9204 .name = "MMTS",
9205 .on_value = 2,
9206 .off_value = 0,
9207 },
9208};
9209
9210static int mute_led_on_off(struct tp_led_table *t, bool state)
9211{
9212 acpi_handle temp;
9213 int output;
9214
3526ecad 9215 if (ACPI_FAILURE(acpi_get_handle(hkey_handle, t->name, &temp))) {
420f9739
DH		 9216 pr_warn("Thinkpad ACPI has no %s interface.\n", t->name);
9217 return -EIO;
9218 }
9219
9220 if (!acpi_evalf(hkey_handle, &output, t->name, "dd",
9221 state ? t->on_value : t->off_value))
9222 return -EIO;
9223
9224 t->state = state;
9225 return state;
9226}
9227
9228int tpacpi_led_set(int whichled, bool on)
9229{
9230 struct tp_led_table *t;
9231
9232 if (whichled < 0 || whichled >= TPACPI_LED_MAX)
9233 return -EINVAL;
9234
9235 t = &led_tables[whichled];
9236 if (t->state < 0 || t->state == on)
9237 return t->state;
9238 return mute_led_on_off(t, on);
9239}
9240EXPORT_SYMBOL_GPL(tpacpi_led_set);
9241
9242static int mute_led_init(struct ibm_init_struct *iibm)
9243{
9244 acpi_handle temp;
9245 int i;
9246
9247 for (i = 0; i < TPACPI_LED_MAX; i++) {
9248 struct tp_led_table *t = &led_tables[i];
9249 if (ACPI_SUCCESS(acpi_get_handle(hkey_handle, t->name, &temp)))
9250 mute_led_on_off(t, false);
9251 else
9252 t->state = -ENODEV;
9253 }
9254 return 0;
9255}
9256
9257static void mute_led_exit(void)
9258{
9259 int i;
9260
9261 for (i = 0; i < TPACPI_LED_MAX; i++)
9262 tpacpi_led_set(i, false);
9263}
9264
119f4498
TI		 9265static void mute_led_resume(void)
9266{
9267 int i;
9268
9269 for (i = 0; i < TPACPI_LED_MAX; i++) {
9270 struct tp_led_table *t = &led_tables[i];
9271 if (t->state >= 0)
9272 mute_led_on_off(t, t->state);
9273 }
9274}
9275
420f9739
DH		 9276static struct ibm_struct mute_led_driver_data = {
9277 .name = "mute_led",
9278 .exit = mute_led_exit,
119f4498 9279 .resume = mute_led_resume,
420f9739
DH		 9280};
9281
56b6aeb0
HMH		 9282/****************************************************************************
9283 ****************************************************************************
9284 *
9285 * Infrastructure
9286 *
9287 ****************************************************************************
9288 ****************************************************************************/
9289
8b468c0c
HMH		 9290/*
9291 * HKEY event callout for other subdrivers go here
9292 * (yes, it is ugly, but it is quick, safe, and gets the job done
9293 */
9294static void tpacpi_driver_event(const unsigned int hkey_event)
9295{
347a2686
HMH		 9296 if (ibm_backlight_device) {
9297 switch (hkey_event) {
9298 case TP_HKEY_EV_BRGHT_UP:
9299 case TP_HKEY_EV_BRGHT_DOWN:
9300 tpacpi_brightness_notify_change();
9301 }
9302 }
0d204c34
HMH		 9303 if (alsa_card) {
9304 switch (hkey_event) {
9305 case TP_HKEY_EV_VOL_UP:
9306 case TP_HKEY_EV_VOL_DOWN:
9307 case TP_HKEY_EV_VOL_MUTE:
9308 volume_alsa_notify_change();
9309 }
9310 }
c685e20d
HG		 9311 if (tp_features.kbdlight && hkey_event == TP_HKEY_EV_KBD_LIGHT) {
9312 enum led_brightness brightness;
9313
9314 mutex_lock(&kbdlight_mutex);
9315
9316 /*
9317 * Check the brightness actually changed, setting the brightness
9318 * through kbdlight_set_level() also triggers this event.
9319 */
9320 brightness = kbdlight_sysfs_get(NULL);
9321 if (kbdlight_brightness != brightness) {
9322 kbdlight_brightness = brightness;
9323 led_classdev_notify_brightness_hw_changed(
9324 &tpacpi_led_kbdlight.led_classdev, brightness);
9325 }
9326
9327 mutex_unlock(&kbdlight_mutex);
9328 }
8b468c0c
HMH		 9329}
9330
8b468c0c
HMH		 9331static void hotkey_driver_event(const unsigned int scancode)
9332{
67bcae6e 9333 tpacpi_driver_event(TP_HKEY_EV_HOTKEY_BASE + scancode);
8b468c0c
HMH		 9334}
9335
7fd40029
HMH		 9336/* --------------------------------------------------------------------- */
9337
56b6aeb0 9338/* /proc support */
94954cc6 9339static struct proc_dir_entry *proc_dir;
16663a87 9340
56b6aeb0
HMH		 9341/*
9342 * Module and infrastructure proble, init and exit handling
9343 */
1da177e4 9344
90ab5ee9 9345static bool force_load;
b21a15f6 9346
fe08bc4b 9347#ifdef CONFIG_THINKPAD_ACPI_DEBUG
a5763f22 9348static const char * __init str_supported(int is_supported)
fe08bc4b 9349{
a5763f22 9350 static char text_unsupported[] __initdata = "not supported";
fe08bc4b 9351
72a979f0 9352 return (is_supported) ? &text_unsupported[4] : &text_unsupported[0];
fe08bc4b
HMH		 9353}
9354#endif /* CONFIG_THINKPAD_ACPI_DEBUG */
9355
b21a15f6
HMH		 9356static void ibm_exit(struct ibm_struct *ibm)
9357{
9358 dbg_printk(TPACPI_DBG_EXIT, "removing %s\n", ibm->name);
9359
9360 list_del_init(&ibm->all_drivers);
9361
9362 if (ibm->flags.acpi_notify_installed) {
9363 dbg_printk(TPACPI_DBG_EXIT,
9364 "%s: acpi_remove_notify_handler\n", ibm->name);
9365 BUG_ON(!ibm->acpi);
9366 acpi_remove_notify_handler(*ibm->acpi->handle,
9367 ibm->acpi->type,
9368 dispatch_acpi_notify);
9369 ibm->flags.acpi_notify_installed = 0;
b21a15f6
HMH		 9370 }
9371
9372 if (ibm->flags.proc_created) {
9373 dbg_printk(TPACPI_DBG_EXIT,
9374 "%s: remove_proc_entry\n", ibm->name);
9375 remove_proc_entry(ibm->name, proc_dir);
9376 ibm->flags.proc_created = 0;
9377 }
9378
9379 if (ibm->flags.acpi_driver_registered) {
9380 dbg_printk(TPACPI_DBG_EXIT,
9381 "%s: acpi_bus_unregister_driver\n", ibm->name);
9382 BUG_ON(!ibm->acpi);
9383 acpi_bus_unregister_driver(ibm->acpi->driver);
9384 kfree(ibm->acpi->driver);
9385 ibm->acpi->driver = NULL;
9386 ibm->flags.acpi_driver_registered = 0;
9387 }
9388
9389 if (ibm->flags.init_called && ibm->exit) {
9390 ibm->exit();
9391 ibm->flags.init_called = 0;
9392 }
9393
9394 dbg_printk(TPACPI_DBG_INIT, "finished removing %s\n", ibm->name);
9395}
f74a27d4 9396
a5763f22 9397static int __init ibm_init(struct ibm_init_struct *iibm)
1da177e4
LT		 9398{
9399 int ret;
a5763f22 9400 struct ibm_struct *ibm = iibm->data;
1da177e4
LT		 9401 struct proc_dir_entry *entry;
9402
a5763f22
HMH		 9403 BUG_ON(ibm == NULL);
9404
9405 INIT_LIST_HEAD(&ibm->all_drivers);
9406
92641177 9407 if (ibm->flags.experimental && !experimental)
1da177e4
LT		 9408 return 0;
9409
fe08bc4b
HMH		 9410 dbg_printk(TPACPI_DBG_INIT,
9411 "probing for %s\n", ibm->name);
9412
a5763f22
HMH		 9413 if (iibm->init) {
9414 ret = iibm->init(iibm);
5fba344c
HMH		 9415 if (ret > 0)
9416 return 0; /* probe failed */
9417 if (ret)
1da177e4 9418 return ret;
a5763f22 9419
92641177 9420 ibm->flags.init_called = 1;
1da177e4
LT		 9421 }
9422
8d376cd6
HMH		 9423 if (ibm->acpi) {
9424 if (ibm->acpi->hid) {
9425 ret = register_tpacpi_subdriver(ibm);
9426 if (ret)
9427 goto err_out;
9428 }
5fba344c 9429
8d376cd6
HMH		 9430 if (ibm->acpi->notify) {
9431 ret = setup_acpi_notify(ibm);
9432 if (ret == -ENODEV) {
0978e012
JP		 9433 pr_notice("disabling subdriver %s\n",
9434 ibm->name);
8d376cd6
HMH		 9435 ret = 0;
9436 goto err_out;
9437 }
9438 if (ret < 0)
9439 goto err_out;
5fba344c 9440 }
5fba344c
HMH		 9441 }
9442
fe08bc4b
HMH		 9443 dbg_printk(TPACPI_DBG_INIT,
9444 "%s installed\n", ibm->name);
9445
78f81cc4 9446 if (ibm->read) {
d161a13f 9447 umode_t mode = iibm->base_procfs_mode;
887965e6 9448
b525c06c
HMH		 9449 if (!mode)
9450 mode = S_IRUGO;
887965e6
AD		 9451 if (ibm->write)
9452 mode |= S_IWUSR;
9453 entry = proc_create_data(ibm->name, mode, proc_dir,
9454 &dispatch_proc_fops, ibm);
78f81cc4 9455 if (!entry) {
0978e012 9456 pr_err("unable to create proc entry %s\n", ibm->name);
5fba344c
HMH		 9457 ret = -ENODEV;
9458 goto err_out;
78f81cc4 9459 }
92641177 9460 ibm->flags.proc_created = 1;
78f81cc4 9461 }
1da177e4 9462
a5763f22
HMH		 9463 list_add_tail(&ibm->all_drivers, &tpacpi_all_drivers);
9464
1da177e4 9465 return 0;
5fba344c
HMH		 9466
9467err_out:
fe08bc4b
HMH		 9468 dbg_printk(TPACPI_DBG_INIT,
9469 "%s: at error exit path with result %d\n",
9470 ibm->name, ret);
9471
5fba344c 9472 ibm_exit(ibm);
72a979f0 9473 return (ret < 0) ? ret : 0;
1da177e4
LT		 9474}
9475
56b6aeb0
HMH		 9476/* Probing */
9477
050df107
HMH		 9478static bool __pure __init tpacpi_is_fw_digit(const char c)
9479{
9480 return (c >= '0' && c <= '9') || (c >= 'A' && c <= 'Z');
9481}
9482
72a979f0 9483static bool __pure __init tpacpi_is_valid_fw_id(const char * const s,
050df107
HMH		 9484 const char t)
9485{
1b0eb5bc
AL		 9486 /*
9487 * Most models: xxyTkkWW (#.##c)
9488 * Ancient 570/600 and -SL lacks (#.##c)
9489 */
9490 if (s && strlen(s) >= 8 &&
050df107
HMH		 9491 tpacpi_is_fw_digit(s[0]) &&
9492 tpacpi_is_fw_digit(s[1]) &&
16a3d9f5
MI		 9493 s[2] == t &&
9494 (s[3] == 'T' || s[3] == 'N') &&
050df107 9495 tpacpi_is_fw_digit(s[4]) &&
1b0eb5bc
AL		 9496 tpacpi_is_fw_digit(s[5]))
9497 return true;
9498
9499 /* New models: xxxyTkkW (#.##c); T550 and some others */
9500 return s && strlen(s) >= 8 &&
9501 tpacpi_is_fw_digit(s[0]) &&
9502 tpacpi_is_fw_digit(s[1]) &&
9503 tpacpi_is_fw_digit(s[2]) &&
9504 s[3] == t &&
9505 (s[4] == 'T' || s[4] == 'N') &&
9506 tpacpi_is_fw_digit(s[5]) &&
9507 tpacpi_is_fw_digit(s[6]);
050df107
HMH		 9508}
9509
bf20e740
HMH		 9510/* returns 0 - probe ok, or < 0 - probe error.
9511 * Probe ok doesn't mean thinkpad found.
9512 * On error, kfree() cleanup on tp->* is not performed, caller must do it */
9513static int __must_check __init get_thinkpad_model_data(
9514 struct thinkpad_id_data *tp)
1da177e4 9515{
1855256c 9516 const struct dmi_device *dev = NULL;
56b6aeb0 9517 char ec_fw_string[18];
bf20e740 9518 char const *s;
1da177e4 9519
d5a2f2f1 9520 if (!tp)
bf20e740 9521 return -EINVAL;
d5a2f2f1
HMH		 9522
9523 memset(tp, 0, sizeof(*tp));
9524
9525 if (dmi_name_in_vendors("IBM"))
9526 tp->vendor = PCI_VENDOR_ID_IBM;
9527 else if (dmi_name_in_vendors("LENOVO"))
9528 tp->vendor = PCI_VENDOR_ID_LENOVO;
9529 else
bf20e740 9530 return 0;
d5a2f2f1 9531
bf20e740
HMH		 9532 s = dmi_get_system_info(DMI_BIOS_VERSION);
9533 tp->bios_version_str = kstrdup(s, GFP_KERNEL);
9534 if (s && !tp->bios_version_str)
9535 return -ENOMEM;
050df107
HMH		 9536
9537 /* Really ancient ThinkPad 240X will fail this, which is fine */
16a3d9f5
MI		 9538 if (!(tpacpi_is_valid_fw_id(tp->bios_version_str, 'E') ||
9539 tpacpi_is_valid_fw_id(tp->bios_version_str, 'C')))
bf20e740 9540 return 0;
050df107 9541
d5a2f2f1
HMH		 9542 tp->bios_model = tp->bios_version_str[0]
9543 | (tp->bios_version_str[1] << 8);
050df107
HMH		 9544 tp->bios_release = (tp->bios_version_str[4] << 8)
9545 | tp->bios_version_str[5];
d5a2f2f1 9546
56b6aeb0
HMH		 9547 /*
9548 * ThinkPad T23 or newer, A31 or newer, R50e or newer,
9549 * X32 or newer, all Z series; Some models must have an
9550 * up-to-date BIOS or they will not be detected.
9551 *
9552 * See http://thinkwiki.org/wiki/List_of_DMI_IDs
9553 */
9554 while ((dev = dmi_find_device(DMI_DEV_TYPE_OEM_STRING, NULL, dev))) {
9555 if (sscanf(dev->name,
9556 "IBM ThinkPad Embedded Controller -[%17c",
9557 ec_fw_string) == 1) {
9558 ec_fw_string[sizeof(ec_fw_string) - 1] = 0;
9559 ec_fw_string[strcspn(ec_fw_string, " ]")] = 0;
d5a2f2f1
HMH		 9560
9561 tp->ec_version_str = kstrdup(ec_fw_string, GFP_KERNEL);
bf20e740
HMH		 9562 if (!tp->ec_version_str)
9563 return -ENOMEM;
050df107
HMH		 9564
9565 if (tpacpi_is_valid_fw_id(ec_fw_string, 'H')) {
9566 tp->ec_model = ec_fw_string[0]
9567 | (ec_fw_string[1] << 8);
9568 tp->ec_release = (ec_fw_string[4] << 8)
9569 | ec_fw_string[5];
9570 } else {
5cac62ac 9571 pr_notice("ThinkPad firmware release %s doesn't match the known patterns\n",
0978e012
JP		 9572 ec_fw_string);
9573 pr_notice("please report this to %s\n",
9574 TPACPI_MAIL);
050df107 9575 }
d5a2f2f1 9576 break;
78f81cc4 9577 }
1da177e4 9578 }
d5a2f2f1 9579
bf20e740 9580 s = dmi_get_system_info(DMI_PRODUCT_VERSION);
40f5c777 9581 if (s && !(strncasecmp(s, "ThinkPad", 8) && strncasecmp(s, "Lenovo", 6))) {
bf20e740
HMH		 9582 tp->model_str = kstrdup(s, GFP_KERNEL);
9583 if (!tp->model_str)
9584 return -ENOMEM;
a4f46bb9
MI		 9585 } else {
9586 s = dmi_get_system_info(DMI_BIOS_VENDOR);
40f5c777 9587 if (s && !(strncasecmp(s, "Lenovo", 6))) {
a4f46bb9
MI		 9588 tp->model_str = kstrdup(s, GFP_KERNEL);
9589 if (!tp->model_str)
9590 return -ENOMEM;
9591 }
d5a2f2f1 9592 }
8c74adbc 9593
bf20e740
HMH		 9594 s = dmi_get_system_info(DMI_PRODUCT_NAME);
9595 tp->nummodel_str = kstrdup(s, GFP_KERNEL);
9596 if (s && !tp->nummodel_str)
9597 return -ENOMEM;
9598
9599 return 0;
1da177e4
LT		 9600}
9601
5fba344c
HMH		 9602static int __init probe_for_thinkpad(void)
9603{
9604 int is_thinkpad;
9605
9606 if (acpi_disabled)
9607 return -ENODEV;
9608
e28393c0
HMH		 9609 /* It would be dangerous to run the driver in this case */
9610 if (!tpacpi_is_ibm() && !tpacpi_is_lenovo())
9611 return -ENODEV;
9612
5fba344c
HMH		 9613 /*
9614 * Non-ancient models have better DMI tagging, but very old models
e675abaf 9615 * don't. tpacpi_is_fw_known() is a cheat to help in that case.
5fba344c 9616 */
e675abaf
HMH		 9617 is_thinkpad = (thinkpad_id.model_str != NULL) ||
9618 (thinkpad_id.ec_model != 0) ||
9619 tpacpi_is_fw_known();
5fba344c 9620
437e470c
HMH		 9621 /* The EC handler is required */
9622 tpacpi_acpi_handle_locate("ec", TPACPI_ACPI_EC_HID, &ec_handle);
5fba344c
HMH		 9623 if (!ec_handle) {
9624 if (is_thinkpad)
0978e012 9625 pr_err("Not yet supported ThinkPad detected!\n");
5fba344c
HMH		 9626 return -ENODEV;
9627 }
9628
0dcef77c
HMH		 9629 if (!is_thinkpad && !force_load)
9630 return -ENODEV;
9631
5fba344c
HMH		 9632 return 0;
9633}
9634
7a43f788
HMH		 9635static void __init thinkpad_acpi_init_banner(void)
9636{
0978e012
JP		 9637 pr_info("%s v%s\n", TPACPI_DESC, TPACPI_VERSION);
9638 pr_info("%s\n", TPACPI_URL);
7a43f788 9639
0978e012 9640 pr_info("ThinkPad BIOS %s, EC %s\n",
7a43f788
HMH		 9641 (thinkpad_id.bios_version_str) ?
9642 thinkpad_id.bios_version_str : "unknown",
9643 (thinkpad_id.ec_version_str) ?
9644 thinkpad_id.ec_version_str : "unknown");
9645
9646 BUG_ON(!thinkpad_id.vendor);
9647
9648 if (thinkpad_id.model_str)
0978e012 9649 pr_info("%s %s, model %s\n",
7a43f788
HMH		 9650 (thinkpad_id.vendor == PCI_VENDOR_ID_IBM) ?
9651 "IBM" : ((thinkpad_id.vendor ==
9652 PCI_VENDOR_ID_LENOVO) ?
9653 "Lenovo" : "Unknown vendor"),
9654 thinkpad_id.model_str,
9655 (thinkpad_id.nummodel_str) ?
9656 thinkpad_id.nummodel_str : "unknown");
9657}
5fba344c 9658
56b6aeb0 9659/* Module init, exit, parameters */
1da177e4 9660
a5763f22
HMH		 9661static struct ibm_init_struct ibms_init[] __initdata = {
9662 {
a5763f22
HMH		 9663 .data = &thinkpad_acpi_driver_data,
9664 },
9665 {
9666 .init = hotkey_init,
9667 .data = &hotkey_driver_data,
9668 },
9669 {
9670 .init = bluetooth_init,
9671 .data = &bluetooth_driver_data,
9672 },
9673 {
9674 .init = wan_init,
9675 .data = &wan_driver_data,
9676 },
0045c0aa
HMH		 9677 {
9678 .init = uwb_init,
9679 .data = &uwb_driver_data,
9680 },
d7c1d17d 9681#ifdef CONFIG_THINKPAD_ACPI_VIDEO
a5763f22
HMH		 9682 {
9683 .init = video_init,
b525c06c 9684 .base_procfs_mode = S_IRUSR,
a5763f22
HMH		 9685 .data = &video_driver_data,
9686 },
d7c1d17d 9687#endif
bb28f3d5
PR		 9688 {
9689 .init = kbdlight_init,
9690 .data = &kbdlight_driver_data,
9691 },
a5763f22
HMH		 9692 {
9693 .init = light_init,
9694 .data = &light_driver_data,
9695 },
a5763f22
HMH		 9696 {
9697 .init = cmos_init,
9698 .data = &cmos_driver_data,
9699 },
9700 {
9701 .init = led_init,
9702 .data = &led_driver_data,
9703 },
9704 {
9705 .init = beep_init,
9706 .data = &beep_driver_data,
9707 },
9708 {
9709 .init = thermal_init,
9710 .data = &thermal_driver_data,
9711 },
a5763f22
HMH		 9712 {
9713 .init = brightness_init,
9714 .data = &brightness_driver_data,
9715 },
9716 {
329e4e18 9717 .init = volume_init,
a5763f22
HMH		 9718 .data = &volume_driver_data,
9719 },
9720 {
9721 .init = fan_init,
9722 .data = &fan_driver_data,
9723 },
420f9739
DH		 9724 {
9725 .init = mute_led_init,
9726 .data = &mute_led_driver_data,
9727 },
a5763f22
HMH		 9728};
9729
e4dca7b7 9730static int __init set_ibm_param(const char *val, const struct kernel_param *kp)
1da177e4
LT		 9731{
9732 unsigned int i;
a5763f22 9733 struct ibm_struct *ibm;
1da177e4 9734
59f91ff1
HMH		 9735 if (!kp || !kp->name || !val)
9736 return -EINVAL;
9737
a5763f22
HMH		 9738 for (i = 0; i < ARRAY_SIZE(ibms_init); i++) {
9739 ibm = ibms_init[i].data;
59f91ff1
HMH		 9740 WARN_ON(ibm == NULL);
9741
9742 if (!ibm || !ibm->name)
9743 continue;
a5763f22
HMH		 9744
9745 if (strcmp(ibm->name, kp->name) == 0 && ibm->write) {
9746 if (strlen(val) > sizeof(ibms_init[i].param) - 2)
78f81cc4 9747 return -ENOSPC;
a5763f22
HMH		 9748 strcpy(ibms_init[i].param, val);
9749 strcat(ibms_init[i].param, ",");
78f81cc4
BD		 9750 return 0;
9751 }
a5763f22 9752 }
1da177e4 9753
1da177e4
LT		 9754 return -EINVAL;
9755}
9756
b09c7225 9757module_param(experimental, int, 0444);
f68080f8 9758MODULE_PARM_DESC(experimental,
35ff8b9f 9759 "Enables experimental features when non-zero");
56b6aeb0 9760
132ce091 9761module_param_named(debug, dbg_level, uint, 0);
f68080f8 9762MODULE_PARM_DESC(debug, "Sets debug level bit-mask");
132ce091 9763
b09c7225 9764module_param(force_load, bool, 0444);
f68080f8 9765MODULE_PARM_DESC(force_load,
5cac62ac 9766 "Attempts to load the driver even on a mis-identified ThinkPad when true");
0dcef77c 9767
b09c7225 9768module_param_named(fan_control, fan_control_allowed, bool, 0444);
f68080f8 9769MODULE_PARM_DESC(fan_control,
35ff8b9f 9770 "Enables setting fan parameters features when true");
ecf2a80a 9771
b09c7225 9772module_param_named(brightness_mode, brightness_mode, uint, 0444);
f68080f8 9773MODULE_PARM_DESC(brightness_mode,
5cac62ac 9774 "Selects brightness control strategy: 0=auto, 1=EC, 2=UCMS, 3=EC+NVRAM");
24d3b774 9775
b09c7225 9776module_param(brightness_enable, uint, 0444);
f68080f8 9777MODULE_PARM_DESC(brightness_enable,
35ff8b9f 9778 "Enables backlight control when 1, disables when 0");
87cc537a 9779
ff850c33 9780#ifdef CONFIG_THINKPAD_ACPI_ALSA_SUPPORT
329e4e18
HMH		 9781module_param_named(volume_mode, volume_mode, uint, 0444);
9782MODULE_PARM_DESC(volume_mode,
5cac62ac 9783 "Selects volume control strategy: 0=auto, 1=EC, 2=N/A, 3=EC+NVRAM");
329e4e18 9784
a112ceee
HMH		 9785module_param_named(volume_capabilities, volume_capabilities, uint, 0444);
9786MODULE_PARM_DESC(volume_capabilities,
5cac62ac 9787 "Selects the mixer capabilites: 0=auto, 1=volume and mute, 2=mute only");
a112ceee 9788
c7ac6291
HMH		 9789module_param_named(volume_control, volume_control_allowed, bool, 0444);
9790MODULE_PARM_DESC(volume_control,
5cac62ac 9791 "Enables software override for the console audio control when true");
c7ac6291 9792
9a417ec0
AL		 9793module_param_named(software_mute, software_mute_requested, bool, 0444);
9794MODULE_PARM_DESC(software_mute,
9795 "Request full software mute control");
9796
0d204c34
HMH		 9797/* ALSA module API parameters */
9798module_param_named(index, alsa_index, int, 0444);
9799MODULE_PARM_DESC(index, "ALSA index for the ACPI EC Mixer");
9800module_param_named(id, alsa_id, charp, 0444);
9801MODULE_PARM_DESC(id, "ALSA id for the ACPI EC Mixer");
9802module_param_named(enable, alsa_enable, bool, 0444);
9803MODULE_PARM_DESC(enable, "Enable the ALSA interface for the ACPI EC Mixer");
ff850c33 9804#endif /* CONFIG_THINKPAD_ACPI_ALSA_SUPPORT */
0d204c34 9805
9b4bbbd2 9806/* The module parameter can't be read back, that's why 0 is used here */
e0c7dfe7 9807#define TPACPI_PARAM(feature) \
f68080f8 9808 module_param_call(feature, set_ibm_param, NULL, NULL, 0); \
5cac62ac 9809 MODULE_PARM_DESC(feature, "Simulates thinkpad-acpi procfs command at module load, see documentation")
1da177e4 9810
e0c7dfe7
HMH		 9811TPACPI_PARAM(hotkey);
9812TPACPI_PARAM(bluetooth);
9813TPACPI_PARAM(video);
9814TPACPI_PARAM(light);
e0c7dfe7
HMH		 9815TPACPI_PARAM(cmos);
9816TPACPI_PARAM(led);
9817TPACPI_PARAM(beep);
e0c7dfe7
HMH		 9818TPACPI_PARAM(brightness);
9819TPACPI_PARAM(volume);
9820TPACPI_PARAM(fan);
78f81cc4 9821
a73f3091 9822#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
b09c7225 9823module_param(dbg_wlswemul, uint, 0444);
a73f3091
HMH		 9824MODULE_PARM_DESC(dbg_wlswemul, "Enables WLSW emulation");
9825module_param_named(wlsw_state, tpacpi_wlsw_emulstate, bool, 0);
9826MODULE_PARM_DESC(wlsw_state,
9827 "Initial state of the emulated WLSW switch");
9828
b09c7225 9829module_param(dbg_bluetoothemul, uint, 0444);
a73f3091
HMH		 9830MODULE_PARM_DESC(dbg_bluetoothemul, "Enables bluetooth switch emulation");
9831module_param_named(bluetooth_state, tpacpi_bluetooth_emulstate, bool, 0);
9832MODULE_PARM_DESC(bluetooth_state,
9833 "Initial state of the emulated bluetooth switch");
9834
b09c7225 9835module_param(dbg_wwanemul, uint, 0444);
a73f3091
HMH		 9836MODULE_PARM_DESC(dbg_wwanemul, "Enables WWAN switch emulation");
9837module_param_named(wwan_state, tpacpi_wwan_emulstate, bool, 0);
9838MODULE_PARM_DESC(wwan_state,
9839 "Initial state of the emulated WWAN switch");
0045c0aa 9840
b09c7225 9841module_param(dbg_uwbemul, uint, 0444);
0045c0aa
HMH		 9842MODULE_PARM_DESC(dbg_uwbemul, "Enables UWB switch emulation");
9843module_param_named(uwb_state, tpacpi_uwb_emulstate, bool, 0);
9844MODULE_PARM_DESC(uwb_state,
9845 "Initial state of the emulated UWB switch");
a73f3091
HMH		 9846#endif
9847
b21a15f6
HMH		 9848static void thinkpad_acpi_module_exit(void)
9849{
9850 struct ibm_struct *ibm, *itmp;
9851
9852 tpacpi_lifecycle = TPACPI_LIFE_EXITING;
9853
9854 list_for_each_entry_safe_reverse(ibm, itmp,
9855 &tpacpi_all_drivers,
9856 all_drivers) {
9857 ibm_exit(ibm);
9858 }
9859
9860 dbg_printk(TPACPI_DBG_INIT, "finished subdriver exit path...\n");
9861
9862 if (tpacpi_inputdev) {
9863 if (tp_features.input_device_registered)
9864 input_unregister_device(tpacpi_inputdev);
9865 else
9866 input_free_device(tpacpi_inputdev);
00d39597 9867 kfree(hotkey_keycode_map);
b21a15f6
HMH		 9868 }
9869
9870 if (tpacpi_hwmon)
9871 hwmon_device_unregister(tpacpi_hwmon);
9872
b21a15f6
HMH		 9873 if (tpacpi_sensors_pdev)
9874 platform_device_unregister(tpacpi_sensors_pdev);
9875 if (tpacpi_pdev)
9876 platform_device_unregister(tpacpi_pdev);
9877
9878 if (tp_features.sensors_pdrv_attrs_registered)
9879 tpacpi_remove_driver_attributes(&tpacpi_hwmon_pdriver.driver);
9880 if (tp_features.platform_drv_attrs_registered)
9881 tpacpi_remove_driver_attributes(&tpacpi_pdriver.driver);
9882
9883 if (tp_features.sensors_pdrv_registered)
9884 platform_driver_unregister(&tpacpi_hwmon_pdriver);
9885
9886 if (tp_features.platform_drv_registered)
9887 platform_driver_unregister(&tpacpi_pdriver);
9888
9889 if (proc_dir)
e0c7dfe7 9890 remove_proc_entry(TPACPI_PROC_DIR, acpi_root_dir);
b21a15f6 9891
e0e3c061
HMH		 9892 if (tpacpi_wq)
9893 destroy_workqueue(tpacpi_wq);
9894
b21a15f6
HMH		 9895 kfree(thinkpad_id.bios_version_str);
9896 kfree(thinkpad_id.ec_version_str);
9897 kfree(thinkpad_id.model_str);
d2be15bd 9898 kfree(thinkpad_id.nummodel_str);
b21a15f6
HMH		 9899}
9900
f74a27d4 9901
1def7115 9902static int __init thinkpad_acpi_module_init(void)
1da177e4
LT		 9903{
9904 int ret, i;
9905
8fef502e
HMH		 9906 tpacpi_lifecycle = TPACPI_LIFE_INIT;
9907
54ae1501 9908 /* Driver-level probe */
d5a2f2f1 9909
bf20e740
HMH		 9910 ret = get_thinkpad_model_data(&thinkpad_id);
9911 if (ret) {
0978e012 9912 pr_err("unable to get DMI data: %d\n", ret);
bf20e740
HMH		 9913 thinkpad_acpi_module_exit();
9914 return ret;
9915 }
5fba344c 9916 ret = probe_for_thinkpad();
d5a2f2f1
HMH		 9917 if (ret) {
9918 thinkpad_acpi_module_exit();
5fba344c 9919 return ret;
d5a2f2f1 9920 }
1da177e4 9921
54ae1501 9922 /* Driver initialization */
d5a2f2f1 9923
7a43f788
HMH		 9924 thinkpad_acpi_init_banner();
9925 tpacpi_check_outdated_fw();
9926
e0c7dfe7
HMH		 9927 TPACPI_ACPIHANDLE_INIT(ecrd);
9928 TPACPI_ACPIHANDLE_INIT(ecwr);
1da177e4 9929
e0e3c061
HMH		 9930 tpacpi_wq = create_singlethread_workqueue(TPACPI_WORKQUEUE_NAME);
9931 if (!tpacpi_wq) {
9932 thinkpad_acpi_module_exit();
9933 return -ENOMEM;
9934 }
9935
e0c7dfe7 9936 proc_dir = proc_mkdir(TPACPI_PROC_DIR, acpi_root_dir);
1da177e4 9937 if (!proc_dir) {
0978e012 9938 pr_err("unable to create proc dir " TPACPI_PROC_DIR "\n");
1def7115 9939 thinkpad_acpi_module_exit();
1da177e4
LT		 9940 return -ENODEV;
9941 }
78f81cc4 9942
54ae1501
HMH		 9943 ret = platform_driver_register(&tpacpi_pdriver);
9944 if (ret) {
0978e012 9945 pr_err("unable to register main platform driver\n");
54ae1501
HMH		 9946 thinkpad_acpi_module_exit();
9947 return ret;
9948 }
ac36393d
HMH		 9949 tp_features.platform_drv_registered = 1;
9950
7fd40029
HMH		 9951 ret = platform_driver_register(&tpacpi_hwmon_pdriver);
9952 if (ret) {
0978e012 9953 pr_err("unable to register hwmon platform driver\n");
7fd40029
HMH		 9954 thinkpad_acpi_module_exit();
9955 return ret;
9956 }
9957 tp_features.sensors_pdrv_registered = 1;
9958
176750d6 9959 ret = tpacpi_create_driver_attributes(&tpacpi_pdriver.driver);
2369cc94
HMH		 9960 if (!ret) {
9961 tp_features.platform_drv_attrs_registered = 1;
35ff8b9f
HMH		 9962 ret = tpacpi_create_driver_attributes(
9963 &tpacpi_hwmon_pdriver.driver);
2369cc94 9964 }
176750d6 9965 if (ret) {
0978e012 9966 pr_err("unable to create sysfs driver attributes\n");
176750d6
HMH		 9967 thinkpad_acpi_module_exit();
9968 return ret;
9969 }
2369cc94 9970 tp_features.sensors_pdrv_attrs_registered = 1;
176750d6 9971
54ae1501
HMH		 9972
9973 /* Device initialization */
e0c7dfe7 9974 tpacpi_pdev = platform_device_register_simple(TPACPI_DRVR_NAME, -1,
54ae1501
HMH		 9975 NULL, 0);
9976 if (IS_ERR(tpacpi_pdev)) {
9977 ret = PTR_ERR(tpacpi_pdev);
9978 tpacpi_pdev = NULL;
0978e012 9979 pr_err("unable to register platform device\n");
54ae1501
HMH		 9980 thinkpad_acpi_module_exit();
9981 return ret;
9982 }
7fd40029 9983 tpacpi_sensors_pdev = platform_device_register_simple(
35ff8b9f
HMH		 9984 TPACPI_HWMON_DRVR_NAME,
9985 -1, NULL, 0);
7fd40029
HMH		 9986 if (IS_ERR(tpacpi_sensors_pdev)) {
9987 ret = PTR_ERR(tpacpi_sensors_pdev);
9988 tpacpi_sensors_pdev = NULL;
0978e012 9989 pr_err("unable to register hwmon platform device\n");
7fd40029
HMH		 9990 thinkpad_acpi_module_exit();
9991 return ret;
9992 }
7fd40029 9993 tp_features.sensors_pdev_attrs_registered = 1;
6b99e356
SF		 9994 tpacpi_hwmon = hwmon_device_register_with_groups(
9995 &tpacpi_sensors_pdev->dev, TPACPI_NAME, NULL, NULL);
9996
54ae1501
HMH		 9997 if (IS_ERR(tpacpi_hwmon)) {
9998 ret = PTR_ERR(tpacpi_hwmon);
9999 tpacpi_hwmon = NULL;
0978e012 10000 pr_err("unable to register hwmon device\n");
54ae1501
HMH		 10001 thinkpad_acpi_module_exit();
10002 return ret;
10003 }
8523ed6f 10004 mutex_init(&tpacpi_inputdev_send_mutex);
7f5d1cd6
HMH		 10005 tpacpi_inputdev = input_allocate_device();
10006 if (!tpacpi_inputdev) {
7f5d1cd6
HMH		 10007 thinkpad_acpi_module_exit();
10008 return -ENOMEM;
10009 } else {
10010 /* Prepare input device, but don't register */
10011 tpacpi_inputdev->name = "ThinkPad Extra Buttons";
e0c7dfe7 10012 tpacpi_inputdev->phys = TPACPI_DRVR_NAME "/input0";
7f5d1cd6 10013 tpacpi_inputdev->id.bustype = BUS_HOST;
e28393c0 10014 tpacpi_inputdev->id.vendor = thinkpad_id.vendor;
7f5d1cd6
HMH		 10015 tpacpi_inputdev->id.product = TPACPI_HKEY_INPUT_PRODUCT;
10016 tpacpi_inputdev->id.version = TPACPI_HKEY_INPUT_VERSION;
d112ef95 10017 tpacpi_inputdev->dev.parent = &tpacpi_pdev->dev;
7f5d1cd6 10018 }
77775838
HMH		 10019
10020 /* Init subdriver dependencies */
10021 tpacpi_detect_brightness_capabilities();
10022
10023 /* Init subdrivers */
a5763f22
HMH		 10024 for (i = 0; i < ARRAY_SIZE(ibms_init); i++) {
10025 ret = ibm_init(&ibms_init[i]);
10026 if (ret >= 0 && *ibms_init[i].param)
10027 ret = ibms_init[i].data->write(ibms_init[i].param);
1da177e4 10028 if (ret < 0) {
1def7115 10029 thinkpad_acpi_module_exit();
1da177e4
LT		 10030 return ret;
10031 }
10032 }
b589ea4c
HMH		 10033
10034 tpacpi_lifecycle = TPACPI_LIFE_RUNNING;
10035
7f5d1cd6
HMH		 10036 ret = input_register_device(tpacpi_inputdev);
10037 if (ret < 0) {
0978e012 10038 pr_err("unable to register input device\n");
7f5d1cd6
HMH		 10039 thinkpad_acpi_module_exit();
10040 return ret;
10041 } else {
10042 tp_features.input_device_registered = 1;
10043 }
1da177e4
LT		 10044
10045 return 0;
10046}
10047
95e57ab2
HMH		 10048MODULE_ALIAS(TPACPI_DRVR_SHORTNAME);
10049
922fe097
HMH		 10050/*
10051 * This will autoload the driver in almost every ThinkPad
10052 * in widespread use.
10053 *
10054 * Only _VERY_ old models, like the 240, 240x and 570 lack
10055 * the HKEY event interface.
10056 */
10057MODULE_DEVICE_TABLE(acpi, ibm_htk_device_ids);
10058
f68080f8
HMH		 10059/*
10060 * DMI matching for module autoloading
10061 *
10062 * See http://thinkwiki.org/wiki/List_of_DMI_IDs
10063 * See http://thinkwiki.org/wiki/BIOS_Upgrade_Downloads
10064 *
10065 * Only models listed in thinkwiki will be supported, so add yours
10066 * if it is not there yet.
10067 */
10068#define IBM_BIOS_MODULE_ALIAS(__type) \
b36a50f9 10069 MODULE_ALIAS("dmi:bvnIBM:bvr" __type "ET??WW*")
f68080f8 10070
f68080f8
HMH		 10071/* Ancient thinkpad BIOSes have to be identified by
10072 * BIOS type or model number, and there are far less
10073 * BIOS types than model numbers... */
922fe097 10074IBM_BIOS_MODULE_ALIAS("I[MU]"); /* 570, 570e */
f68080f8 10075
f68f53a2
HMH		 10076MODULE_AUTHOR("Borislav Deianov <borislav@users.sf.net>");
10077MODULE_AUTHOR("Henrique de Moraes Holschuh <hmh@hmh.eng.br>");
e0c7dfe7
HMH		 10078MODULE_DESCRIPTION(TPACPI_DESC);
10079MODULE_VERSION(TPACPI_VERSION);
f68080f8
HMH		 10080MODULE_LICENSE("GPL");
10081
1def7115
HMH		 10082module_init(thinkpad_acpi_module_init);
10083module_exit(thinkpad_acpi_module_exit);
ubuntu-bionic-kernel mirror