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thinkpad-acpi: disable volume control
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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
b57f7e7b 24#define TPACPI_VERSION "0.23"
a112ceee 25#define TPACPI_SYSFS_VERSION 0x020700
78f81cc4
BD		 26
27/*
1da177e4 28 * Changelog:
4b45cc07
HMH		 29 * 2007-10-20 changelog trimmed down
30 *
643f12db
HMH		 31 * 2007-03-27 0.14 renamed to thinkpad_acpi and moved to
32 * drivers/misc.
f9ff43a6
HMH		 33 *
34 * 2006-11-22 0.13 new maintainer
35 * changelog now lives in git commit history, and will
36 * not be updated further in-file.
837ca6dd 37 *
78f81cc4
BD		 38 * 2005-03-17 0.11 support for 600e, 770x
39 * thanks to Jamie Lentin <lentinj@dial.pipex.com>
4b45cc07
HMH		 40 *
41 * 2005-01-16 0.9 use MODULE_VERSION
78f81cc4
BD		 42 * thanks to Henrik Brix Andersen <brix@gentoo.org>
43 * fix parameter passing on module loading
44 * thanks to Rusty Russell <rusty@rustcorp.com.au>
45 * thanks to Jim Radford <radford@blackbean.org>
46 * 2004-11-08 0.8 fix init error case, don't return from a macro
47 * thanks to Chris Wright <chrisw@osdl.org>
1da177e4
LT		 48 */
49
0c78039f
HMH		 50#include <linux/kernel.h>
51#include <linux/module.h>
52#include <linux/init.h>
53#include <linux/types.h>
54#include <linux/string.h>
55#include <linux/list.h>
56#include <linux/mutex.h>
73a94d86 57#include <linux/sched.h>
0c78039f
HMH		 58#include <linux/kthread.h>
59#include <linux/freezer.h>
60#include <linux/delay.h>
61
62#include <linux/nvram.h>
63#include <linux/proc_fs.h>
64#include <linux/sysfs.h>
65#include <linux/backlight.h>
66#include <linux/fb.h>
67#include <linux/platform_device.h>
68#include <linux/hwmon.h>
69#include <linux/hwmon-sysfs.h>
70#include <linux/input.h>
4fa6811b 71#include <linux/leds.h>
0e74dc26 72#include <linux/rfkill.h>
0c78039f
HMH		 73#include <asm/uaccess.h>
74
75#include <linux/dmi.h>
76#include <linux/jiffies.h>
77#include <linux/workqueue.h>
78
79#include <acpi/acpi_drivers.h>
0c78039f
HMH		 80
81#include <linux/pci_ids.h>
82
0c78039f
HMH		 83
84/* ThinkPad CMOS commands */
85#define TP_CMOS_VOLUME_DOWN 0
86#define TP_CMOS_VOLUME_UP 1
87#define TP_CMOS_VOLUME_MUTE 2
88#define TP_CMOS_BRIGHTNESS_UP 4
89#define TP_CMOS_BRIGHTNESS_DOWN 5
4fa6811b
HMH		 90#define TP_CMOS_THINKLIGHT_ON 12
91#define TP_CMOS_THINKLIGHT_OFF 13
0c78039f
HMH		 92
93/* NVRAM Addresses */
94enum tp_nvram_addr {
95 TP_NVRAM_ADDR_HK2 = 0x57,
96 TP_NVRAM_ADDR_THINKLIGHT = 0x58,
97 TP_NVRAM_ADDR_VIDEO = 0x59,
98 TP_NVRAM_ADDR_BRIGHTNESS = 0x5e,
99 TP_NVRAM_ADDR_MIXER = 0x60,
100};
101
102/* NVRAM bit masks */
103enum {
104 TP_NVRAM_MASK_HKT_THINKPAD = 0x08,
105 TP_NVRAM_MASK_HKT_ZOOM = 0x20,
106 TP_NVRAM_MASK_HKT_DISPLAY = 0x40,
107 TP_NVRAM_MASK_HKT_HIBERNATE = 0x80,
108 TP_NVRAM_MASK_THINKLIGHT = 0x10,
109 TP_NVRAM_MASK_HKT_DISPEXPND = 0x30,
110 TP_NVRAM_MASK_HKT_BRIGHTNESS = 0x20,
111 TP_NVRAM_MASK_LEVEL_BRIGHTNESS = 0x0f,
112 TP_NVRAM_POS_LEVEL_BRIGHTNESS = 0,
113 TP_NVRAM_MASK_MUTE = 0x40,
114 TP_NVRAM_MASK_HKT_VOLUME = 0x80,
115 TP_NVRAM_MASK_LEVEL_VOLUME = 0x0f,
116 TP_NVRAM_POS_LEVEL_VOLUME = 0,
117};
118
b21a15f6 119/* ACPI HIDs */
e0c7dfe7 120#define TPACPI_ACPI_HKEY_HID "IBM0068"
b21a15f6
HMH		 121
122/* Input IDs */
123#define TPACPI_HKEY_INPUT_PRODUCT 0x5054 /* "TP" */
124#define TPACPI_HKEY_INPUT_VERSION 0x4101
125
153f8220
HMH		 126/* ACPI \WGSV commands */
127enum {
128 TP_ACPI_WGSV_GET_STATE = 0x01, /* Get state information */
129 TP_ACPI_WGSV_PWR_ON_ON_RESUME = 0x02, /* Resume WWAN powered on */
130 TP_ACPI_WGSV_PWR_OFF_ON_RESUME = 0x03, /* Resume WWAN powered off */
131 TP_ACPI_WGSV_SAVE_STATE = 0x04, /* Save state for S4/S5 */
132};
133
134/* TP_ACPI_WGSV_GET_STATE bits */
135enum {
136 TP_ACPI_WGSV_STATE_WWANEXIST = 0x0001, /* WWAN hw available */
137 TP_ACPI_WGSV_STATE_WWANPWR = 0x0002, /* WWAN radio enabled */
138 TP_ACPI_WGSV_STATE_WWANPWRRES = 0x0004, /* WWAN state at resume */
139 TP_ACPI_WGSV_STATE_WWANBIOSOFF = 0x0008, /* WWAN disabled in BIOS */
140 TP_ACPI_WGSV_STATE_BLTHEXIST = 0x0001, /* BLTH hw available */
141 TP_ACPI_WGSV_STATE_BLTHPWR = 0x0002, /* BLTH radio enabled */
142 TP_ACPI_WGSV_STATE_BLTHPWRRES = 0x0004, /* BLTH state at resume */
143 TP_ACPI_WGSV_STATE_BLTHBIOSOFF = 0x0008, /* BLTH disabled in BIOS */
144 TP_ACPI_WGSV_STATE_UWBEXIST = 0x0010, /* UWB hw available */
145 TP_ACPI_WGSV_STATE_UWBPWR = 0x0020, /* UWB radio enabled */
146};
b21a15f6 147
67bcae6e
HMH		 148/* HKEY events */
149enum tpacpi_hkey_event_t {
150 /* Hotkey-related */
151 TP_HKEY_EV_HOTKEY_BASE = 0x1001, /* first hotkey (FN+F1) */
152 TP_HKEY_EV_BRGHT_UP = 0x1010, /* Brightness up */
153 TP_HKEY_EV_BRGHT_DOWN = 0x1011, /* Brightness down */
154 TP_HKEY_EV_VOL_UP = 0x1015, /* Volume up or unmute */
155 TP_HKEY_EV_VOL_DOWN = 0x1016, /* Volume down or unmute */
156 TP_HKEY_EV_VOL_MUTE = 0x1017, /* Mixer output mute */
157
158 /* Reasons for waking up from S3/S4 */
159 TP_HKEY_EV_WKUP_S3_UNDOCK = 0x2304, /* undock requested, S3 */
160 TP_HKEY_EV_WKUP_S4_UNDOCK = 0x2404, /* undock requested, S4 */
161 TP_HKEY_EV_WKUP_S3_BAYEJ = 0x2305, /* bay ejection req, S3 */
162 TP_HKEY_EV_WKUP_S4_BAYEJ = 0x2405, /* bay ejection req, S4 */
163 TP_HKEY_EV_WKUP_S3_BATLOW = 0x2313, /* battery empty, S3 */
164 TP_HKEY_EV_WKUP_S4_BATLOW = 0x2413, /* battery empty, S4 */
165
166 /* Auto-sleep after eject request */
167 TP_HKEY_EV_BAYEJ_ACK = 0x3003, /* bay ejection complete */
168 TP_HKEY_EV_UNDOCK_ACK = 0x4003, /* undock complete */
169
170 /* Misc bay events */
171 TP_HKEY_EV_OPTDRV_EJ = 0x3006, /* opt. drive tray ejected */
172
173 /* User-interface events */
174 TP_HKEY_EV_LID_CLOSE = 0x5001, /* laptop lid closed */
175 TP_HKEY_EV_LID_OPEN = 0x5002, /* laptop lid opened */
176 TP_HKEY_EV_TABLET_TABLET = 0x5009, /* tablet swivel up */
177 TP_HKEY_EV_TABLET_NOTEBOOK = 0x500a, /* tablet swivel down */
178 TP_HKEY_EV_PEN_INSERTED = 0x500b, /* tablet pen inserted */
179 TP_HKEY_EV_PEN_REMOVED = 0x500c, /* tablet pen removed */
180 TP_HKEY_EV_BRGHT_CHANGED = 0x5010, /* backlight control event */
181
182 /* Thermal events */
183 TP_HKEY_EV_ALARM_BAT_HOT = 0x6011, /* battery too hot */
184 TP_HKEY_EV_ALARM_BAT_XHOT = 0x6012, /* battery critically hot */
185 TP_HKEY_EV_ALARM_SENSOR_HOT = 0x6021, /* sensor too hot */
186 TP_HKEY_EV_ALARM_SENSOR_XHOT = 0x6022, /* sensor critically hot */
187 TP_HKEY_EV_THM_TABLE_CHANGED = 0x6030, /* thermal table changed */
188
189 /* Misc */
190 TP_HKEY_EV_RFKILL_CHANGED = 0x7000, /* rfkill switch changed */
191};
192
b21a15f6
HMH		 193/****************************************************************************
194 * Main driver
195 */
196
e0c7dfe7
HMH		 197#define TPACPI_NAME "thinkpad"
198#define TPACPI_DESC "ThinkPad ACPI Extras"
199#define TPACPI_FILE TPACPI_NAME "_acpi"
200#define TPACPI_URL "http://ibm-acpi.sf.net/"
201#define TPACPI_MAIL "ibm-acpi-devel@lists.sourceforge.net"
b21a15f6 202
e0c7dfe7
HMH		 203#define TPACPI_PROC_DIR "ibm"
204#define TPACPI_ACPI_EVENT_PREFIX "ibm"
205#define TPACPI_DRVR_NAME TPACPI_FILE
95e57ab2 206#define TPACPI_DRVR_SHORTNAME "tpacpi"
e0c7dfe7 207#define TPACPI_HWMON_DRVR_NAME TPACPI_NAME "_hwmon"
b21a15f6 208
95e57ab2 209#define TPACPI_NVRAM_KTHREAD_NAME "ktpacpi_nvramd"
e0e3c061 210#define TPACPI_WORKQUEUE_NAME "ktpacpid"
95e57ab2 211
e0c7dfe7 212#define TPACPI_MAX_ACPI_ARGS 3
b21a15f6 213
7ff8d62f 214/* printk headers */
e0c7dfe7 215#define TPACPI_LOG TPACPI_FILE ": "
7ff8d62f
HMH		 216#define TPACPI_EMERG KERN_EMERG TPACPI_LOG
217#define TPACPI_ALERT KERN_ALERT TPACPI_LOG
218#define TPACPI_CRIT KERN_CRIT TPACPI_LOG
219#define TPACPI_ERR KERN_ERR TPACPI_LOG
220#define TPACPI_WARN KERN_WARNING TPACPI_LOG
221#define TPACPI_NOTICE KERN_NOTICE TPACPI_LOG
222#define TPACPI_INFO KERN_INFO TPACPI_LOG
223#define TPACPI_DEBUG KERN_DEBUG TPACPI_LOG
224
225/* Debugging printk groups */
0c78039f 226#define TPACPI_DBG_ALL 0xffff
73a94d86 227#define TPACPI_DBG_DISCLOSETASK 0x8000
0c78039f
HMH		 228#define TPACPI_DBG_INIT 0x0001
229#define TPACPI_DBG_EXIT 0x0002
bee4cd9b 230#define TPACPI_DBG_RFKILL 0x0004
56e2c200 231#define TPACPI_DBG_HKEY 0x0008
74a60c0f 232#define TPACPI_DBG_FAN 0x0010
0e501834 233#define TPACPI_DBG_BRGHT 0x0020
329e4e18 234#define TPACPI_DBG_MIXER 0x0040
0c78039f 235
35ff8b9f
HMH		 236#define onoff(status, bit) ((status) & (1 << (bit)) ? "on" : "off")
237#define enabled(status, bit) ((status) & (1 << (bit)) ? "enabled" : "disabled")
238#define strlencmp(a, b) (strncmp((a), (b), strlen(b)))
0c78039f 239
0c78039f
HMH		 240
241/****************************************************************************
b21a15f6 242 * Driver-wide structs and misc. variables
0c78039f
HMH		 243 */
244
245struct ibm_struct;
246
247struct tp_acpi_drv_struct {
248 const struct acpi_device_id *hid;
249 struct acpi_driver *driver;
250
251 void (*notify) (struct ibm_struct *, u32);
252 acpi_handle *handle;
253 u32 type;
254 struct acpi_device *device;
255};
256
257struct ibm_struct {
258 char *name;
259
260 int (*read) (char *);
261 int (*write) (char *);
262 void (*exit) (void);
263 void (*resume) (void);
083f1760 264 void (*suspend) (pm_message_t state);
90d9d3c7 265 void (*shutdown) (void);
0c78039f
HMH		 266
267 struct list_head all_drivers;
268
269 struct tp_acpi_drv_struct *acpi;
270
271 struct {
272 u8 acpi_driver_registered:1;
273 u8 acpi_notify_installed:1;
274 u8 proc_created:1;
275 u8 init_called:1;
276 u8 experimental:1;
277 } flags;
278};
279
280struct ibm_init_struct {
281 char param[32];
282
283 int (*init) (struct ibm_init_struct *);
284 struct ibm_struct *data;
285};
286
287static struct {
0c78039f
HMH		 288 u32 bluetooth:1;
289 u32 hotkey:1;
290 u32 hotkey_mask:1;
291 u32 hotkey_wlsw:1;
6c231bd5 292 u32 hotkey_tablet:1;
0c78039f
HMH		 293 u32 light:1;
294 u32 light_status:1;
295 u32 bright_16levels:1;
b5972796 296 u32 bright_acpimode:1;
0c78039f 297 u32 wan:1;
0045c0aa 298 u32 uwb:1;
0c78039f 299 u32 fan_ctrl_status_undef:1;
d7377247 300 u32 second_fan:1;
60201732 301 u32 beep_needs_two_args:1;
a112ceee 302 u32 mixer_no_level_control:1;
0c78039f
HMH		 303 u32 input_device_registered:1;
304 u32 platform_drv_registered:1;
305 u32 platform_drv_attrs_registered:1;
306 u32 sensors_pdrv_registered:1;
307 u32 sensors_pdrv_attrs_registered:1;
308 u32 sensors_pdev_attrs_registered:1;
309 u32 hotkey_poll_active:1;
310} tp_features;
311
92889022
HMH		 312static struct {
313 u16 hotkey_mask_ff:1;
c7ac6291 314 u16 volume_ctrl_forbidden:1;
92889022
HMH		 315} tp_warned;
316
0c78039f
HMH		 317struct thinkpad_id_data {
318 unsigned int vendor; /* ThinkPad vendor:
319 * PCI_VENDOR_ID_IBM/PCI_VENDOR_ID_LENOVO */
320
321 char *bios_version_str; /* Something like 1ZET51WW (1.03z) */
322 char *ec_version_str; /* Something like 1ZHT51WW-1.04a */
323
050df107 324 u16 bios_model; /* 1Y = 0x5931, 0 = unknown */
0c78039f 325 u16 ec_model;
050df107
HMH		 326 u16 bios_release; /* 1ZETK1WW = 0x314b, 0 = unknown */
327 u16 ec_release;
0c78039f 328
8c74adbc
HMH		 329 char *model_str; /* ThinkPad T43 */
330 char *nummodel_str; /* 9384A9C for a 9384-A9C model */
0c78039f 331};
0c78039f
HMH		 332static struct thinkpad_id_data thinkpad_id;
333
8fef502e
HMH		 334static enum {
335 TPACPI_LIFE_INIT = 0,
336 TPACPI_LIFE_RUNNING,
337 TPACPI_LIFE_EXITING,
338} tpacpi_lifecycle;
339
b21a15f6
HMH		 340static int experimental;
341static u32 dbg_level;
342
e0e3c061
HMH		 343static struct workqueue_struct *tpacpi_wq;
344
75bd3bf2
HMH		 345enum led_status_t {
346 TPACPI_LED_OFF = 0,
347 TPACPI_LED_ON,
348 TPACPI_LED_BLINK,
349};
350
4fa6811b
HMH		 351/* Special LED class that can defer work */
352struct tpacpi_led_classdev {
353 struct led_classdev led_classdev;
354 struct work_struct work;
75bd3bf2 355 enum led_status_t new_state;
af116101 356 unsigned int led;
4fa6811b
HMH		 357};
358
a73f3091
HMH		 359#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
360static int dbg_wlswemul;
361static int tpacpi_wlsw_emulstate;
362static int dbg_bluetoothemul;
363static int tpacpi_bluetooth_emulstate;
364static int dbg_wwanemul;
365static int tpacpi_wwan_emulstate;
0045c0aa
HMH		 366static int dbg_uwbemul;
367static int tpacpi_uwb_emulstate;
a73f3091
HMH		 368#endif
369
370
3dcc2c3b
HMH		 371/*************************************************************************
372 * Debugging helpers
373 */
374
375#define dbg_printk(a_dbg_level, format, arg...) \
376 do { if (dbg_level & (a_dbg_level)) \
377 printk(TPACPI_DEBUG "%s: " format, __func__ , ## arg); \
378 } while (0)
379
380#ifdef CONFIG_THINKPAD_ACPI_DEBUG
381#define vdbg_printk dbg_printk
382static const char *str_supported(int is_supported);
383#else
384#define vdbg_printk(a_dbg_level, format, arg...) \
385 do { } while (0)
386#endif
387
73a94d86
HMH		 388static void tpacpi_log_usertask(const char * const what)
389{
390 printk(TPACPI_DEBUG "%s: access by process with PID %d\n",
391 what, task_tgid_vnr(current));
392}
393
394#define tpacpi_disclose_usertask(what, format, arg...) \
395 do { \
396 if (unlikely( \
397 (dbg_level & TPACPI_DBG_DISCLOSETASK) && \
398 (tpacpi_lifecycle == TPACPI_LIFE_RUNNING))) { \
399 printk(TPACPI_DEBUG "%s: PID %d: " format, \
400 what, task_tgid_vnr(current), ## arg); \
401 } \
402 } while (0)
3dcc2c3b 403
7d95a3d5
HMH		 404/*
405 * Quirk handling helpers
406 *
407 * ThinkPad IDs and versions seen in the field so far
408 * are two-characters from the set [0-9A-Z], i.e. base 36.
409 *
410 * We use values well outside that range as specials.
411 */
412
413#define TPACPI_MATCH_ANY 0xffffU
414#define TPACPI_MATCH_UNKNOWN 0U
415
416/* TPID('1', 'Y') == 0x5931 */
417#define TPID(__c1, __c2) (((__c2) << 8) | (__c1))
418
419#define TPACPI_Q_IBM(__id1, __id2, __quirk) \
420 { .vendor = PCI_VENDOR_ID_IBM, \
421 .bios = TPID(__id1, __id2), \
422 .ec = TPACPI_MATCH_ANY, \
423 .quirks = (__quirk) }
424
425#define TPACPI_Q_LNV(__id1, __id2, __quirk) \
426 { .vendor = PCI_VENDOR_ID_LENOVO, \
427 .bios = TPID(__id1, __id2), \
428 .ec = TPACPI_MATCH_ANY, \
429 .quirks = (__quirk) }
430
a112ceee
HMH		 431#define TPACPI_QEC_LNV(__id1, __id2, __quirk) \
432 { .vendor = PCI_VENDOR_ID_LENOVO, \
433 .bios = TPACPI_MATCH_ANY, \
434 .ec = TPID(__id1, __id2), \
435 .quirks = (__quirk) }
436
7d95a3d5
HMH		 437struct tpacpi_quirk {
438 unsigned int vendor;
439 u16 bios;
440 u16 ec;
441 unsigned long quirks;
442};
443
444/**
445 * tpacpi_check_quirks() - search BIOS/EC version on a list
446 * @qlist: array of &struct tpacpi_quirk
447 * @qlist_size: number of elements in @qlist
448 *
449 * Iterates over a quirks list until one is found that matches the
450 * ThinkPad's vendor, BIOS and EC model.
451 *
452 * Returns 0 if nothing matches, otherwise returns the quirks field of
453 * the matching &struct tpacpi_quirk entry.
454 *
455 * The match criteria is: vendor, ec and bios much match.
456 */
457static unsigned long __init tpacpi_check_quirks(
458 const struct tpacpi_quirk *qlist,
459 unsigned int qlist_size)
460{
461 while (qlist_size) {
462 if ((qlist->vendor == thinkpad_id.vendor ||
463 qlist->vendor == TPACPI_MATCH_ANY) &&
464 (qlist->bios == thinkpad_id.bios_model ||
465 qlist->bios == TPACPI_MATCH_ANY) &&
466 (qlist->ec == thinkpad_id.ec_model ||
467 qlist->ec == TPACPI_MATCH_ANY))
468 return qlist->quirks;
469
470 qlist_size--;
471 qlist++;
472 }
473 return 0;
474}
475
476
56b6aeb0
HMH		 477/****************************************************************************
478 ****************************************************************************
479 *
480 * ACPI Helpers and device model
481 *
482 ****************************************************************************
483 ****************************************************************************/
484
485/*************************************************************************
486 * ACPI basic handles
487 */
1da177e4 488
94954cc6 489static acpi_handle root_handle;
1da177e4 490
e0c7dfe7 491#define TPACPI_HANDLE(object, parent, paths...) \
1da177e4
LT		 492 static acpi_handle object##_handle; \
493 static acpi_handle *object##_parent = &parent##_handle; \
78f81cc4 494 static char *object##_path; \
1da177e4
LT		 495 static char *object##_paths[] = { paths }
496
e0c7dfe7 497TPACPI_HANDLE(ec, root, "\\_SB.PCI0.ISA.EC0", /* 240, 240x */
78f81cc4
BD		 498 "\\_SB.PCI.ISA.EC", /* 570 */
499 "\\_SB.PCI0.ISA0.EC0", /* 600e/x, 770e, 770x */
500 "\\_SB.PCI0.ISA.EC", /* A21e, A2xm/p, T20-22, X20-21 */
501 "\\_SB.PCI0.AD4S.EC0", /* i1400, R30 */
502 "\\_SB.PCI0.ICH3.EC0", /* R31 */
503 "\\_SB.PCI0.LPC.EC", /* all others */
56b6aeb0 504 );
78f81cc4 505
e0c7dfe7
HMH		 506TPACPI_HANDLE(ecrd, ec, "ECRD"); /* 570 */
507TPACPI_HANDLE(ecwr, ec, "ECWR"); /* 570 */
78f81cc4 508
35ff8b9f
HMH		 509TPACPI_HANDLE(cmos, root, "\\UCMS", /* R50, R50e, R50p, R51, */
510 /* T4x, X31, X40 */
78f81cc4
BD		 511 "\\CMOS", /* A3x, G4x, R32, T23, T30, X22-24, X30 */
512 "\\CMS", /* R40, R40e */
56b6aeb0 513 ); /* all others */
78f81cc4 514
e0c7dfe7 515TPACPI_HANDLE(hkey, ec, "\\_SB.HKEY", /* 600e/x, 770e, 770x */
78f81cc4
BD		 516 "^HKEY", /* R30, R31 */
517 "HKEY", /* all others */
56b6aeb0 518 ); /* 570 */
78f81cc4 519
d7c1d17d
HMH		 520TPACPI_HANDLE(vid, root, "\\_SB.PCI.AGP.VGA", /* 570 */
521 "\\_SB.PCI0.AGP0.VID0", /* 600e/x, 770x */
522 "\\_SB.PCI0.VID0", /* 770e */
523 "\\_SB.PCI0.VID", /* A21e, G4x, R50e, X30, X40 */
524 "\\_SB.PCI0.AGP.VID", /* all others */
525 ); /* R30, R31 */
526
78f81cc4 527
56b6aeb0
HMH		 528/*************************************************************************
529 * ACPI helpers
a8b7a662
HMH		 530 */
531
1da177e4
LT		 532static int acpi_evalf(acpi_handle handle,
533 void *res, char *method, char *fmt, ...)
534{
535 char *fmt0 = fmt;
78f81cc4 536 struct acpi_object_list params;
e0c7dfe7 537 union acpi_object in_objs[TPACPI_MAX_ACPI_ARGS];
78f81cc4
BD		 538 struct acpi_buffer result, *resultp;
539 union acpi_object out_obj;
540 acpi_status status;
541 va_list ap;
542 char res_type;
543 int success;
544 int quiet;
1da177e4
LT		 545
546 if (!*fmt) {
e0c7dfe7 547 printk(TPACPI_ERR "acpi_evalf() called with empty format\n");
1da177e4
LT		 548 return 0;
549 }
550
551 if (*fmt == 'q') {
552 quiet = 1;
553 fmt++;
554 } else
555 quiet = 0;
556
557 res_type = *(fmt++);
558
559 params.count = 0;
560 params.pointer = &in_objs[0];
561
562 va_start(ap, fmt);
563 while (*fmt) {
564 char c = *(fmt++);
565 switch (c) {
566 case 'd': /* int */
567 in_objs[params.count].integer.value = va_arg(ap, int);
568 in_objs[params.count++].type = ACPI_TYPE_INTEGER;
569 break;
78f81cc4 570 /* add more types as needed */
1da177e4 571 default:
e0c7dfe7 572 printk(TPACPI_ERR "acpi_evalf() called "
1da177e4
LT		 573 "with invalid format character '%c'\n", c);
574 return 0;
575 }
576 }
577 va_end(ap);
578
78f81cc4
BD		 579 if (res_type != 'v') {
580 result.length = sizeof(out_obj);
581 result.pointer = &out_obj;
582 resultp = &result;
583 } else
584 resultp = NULL;
1da177e4 585
78f81cc4 586 status = acpi_evaluate_object(handle, method, &params, resultp);
1da177e4
LT		 587
588 switch (res_type) {
78f81cc4 589 case 'd': /* int */
1da177e4
LT		 590 if (res)
591 *(int *)res = out_obj.integer.value;
592 success = status == AE_OK && out_obj.type == ACPI_TYPE_INTEGER;
593 break;
78f81cc4 594 case 'v': /* void */
1da177e4
LT		 595 success = status == AE_OK;
596 break;
78f81cc4 597 /* add more types as needed */
1da177e4 598 default:
e0c7dfe7 599 printk(TPACPI_ERR "acpi_evalf() called "
1da177e4
LT		 600 "with invalid format character '%c'\n", res_type);
601 return 0;
602 }
603
56b6aeb0 604 if (!success && !quiet)
e0c7dfe7 605 printk(TPACPI_ERR "acpi_evalf(%s, %s, ...) failed: %d\n",
56b6aeb0
HMH		 606 method, fmt0, status);
607
608 return success;
609}
610
35ff8b9f 611static int acpi_ec_read(int i, u8 *p)
56b6aeb0
HMH		 612{
613 int v;
614
615 if (ecrd_handle) {
616 if (!acpi_evalf(ecrd_handle, &v, NULL, "dd", i))
617 return 0;
618 *p = v;
619 } else {
620 if (ec_read(i, p) < 0)
621 return 0;
622 }
623
624 return 1;
625}
626
627static int acpi_ec_write(int i, u8 v)
628{
629 if (ecwr_handle) {
630 if (!acpi_evalf(ecwr_handle, NULL, NULL, "vdd", i, v))
631 return 0;
632 } else {
633 if (ec_write(i, v) < 0)
634 return 0;
635 }
636
637 return 1;
638}
639
c9bea99c
HMH		 640static int issue_thinkpad_cmos_command(int cmos_cmd)
641{
642 if (!cmos_handle)
643 return -ENXIO;
644
645 if (!acpi_evalf(cmos_handle, NULL, NULL, "vd", cmos_cmd))
646 return -EIO;
647
648 return 0;
649}
650
56b6aeb0
HMH		 651/*************************************************************************
652 * ACPI device model
653 */
654
35ff8b9f
HMH		 655#define TPACPI_ACPIHANDLE_INIT(object) \
656 drv_acpi_handle_init(#object, &object##_handle, *object##_parent, \
f74a27d4
HMH		 657 object##_paths, ARRAY_SIZE(object##_paths), &object##_path)
658
8d376cd6 659static void drv_acpi_handle_init(char *name,
5fba344c
HMH		 660 acpi_handle *handle, acpi_handle parent,
661 char **paths, int num_paths, char **path)
56b6aeb0
HMH		 662{
663 int i;
664 acpi_status status;
665
5ae930e6
HMH		 666 vdbg_printk(TPACPI_DBG_INIT, "trying to locate ACPI handle for %s\n",
667 name);
668
56b6aeb0
HMH		 669 for (i = 0; i < num_paths; i++) {
670 status = acpi_get_handle(parent, paths[i], handle);
671 if (ACPI_SUCCESS(status)) {
672 *path = paths[i];
5ae930e6
HMH		 673 dbg_printk(TPACPI_DBG_INIT,
674 "Found ACPI handle %s for %s\n",
675 *path, name);
56b6aeb0
HMH		 676 return;
677 }
678 }
679
5ae930e6
HMH		 680 vdbg_printk(TPACPI_DBG_INIT, "ACPI handle for %s not found\n",
681 name);
56b6aeb0
HMH		 682 *handle = NULL;
683}
684
8d376cd6 685static void dispatch_acpi_notify(acpi_handle handle, u32 event, void *data)
56b6aeb0
HMH		 686{
687 struct ibm_struct *ibm = data;
688
8fef502e
HMH		 689 if (tpacpi_lifecycle != TPACPI_LIFE_RUNNING)
690 return;
691
8d376cd6 692 if (!ibm || !ibm->acpi || !ibm->acpi->notify)
56b6aeb0
HMH		 693 return;
694
8d376cd6 695 ibm->acpi->notify(ibm, event);
56b6aeb0
HMH		 696}
697
8d376cd6 698static int __init setup_acpi_notify(struct ibm_struct *ibm)
56b6aeb0
HMH		 699{
700 acpi_status status;
5ae930e6 701 int rc;
56b6aeb0 702
8d376cd6
HMH		 703 BUG_ON(!ibm->acpi);
704
705 if (!*ibm->acpi->handle)
56b6aeb0
HMH		 706 return 0;
707
5ae930e6 708 vdbg_printk(TPACPI_DBG_INIT,
fe08bc4b
HMH		 709 "setting up ACPI notify for %s\n", ibm->name);
710
5ae930e6
HMH		 711 rc = acpi_bus_get_device(*ibm->acpi->handle, &ibm->acpi->device);
712 if (rc < 0) {
e0c7dfe7 713 printk(TPACPI_ERR "acpi_bus_get_device(%s) failed: %d\n",
5ae930e6 714 ibm->name, rc);
56b6aeb0
HMH		 715 return -ENODEV;
716 }
717
db89b4f0 718 ibm->acpi->device->driver_data = ibm;
8d376cd6 719 sprintf(acpi_device_class(ibm->acpi->device), "%s/%s",
e0c7dfe7 720 TPACPI_ACPI_EVENT_PREFIX,
643f12db 721 ibm->name);
56b6aeb0 722
8d376cd6
HMH		 723 status = acpi_install_notify_handler(*ibm->acpi->handle,
724 ibm->acpi->type, dispatch_acpi_notify, ibm);
56b6aeb0
HMH		 725 if (ACPI_FAILURE(status)) {
726 if (status == AE_ALREADY_EXISTS) {
35ff8b9f
HMH		 727 printk(TPACPI_NOTICE
728 "another device driver is already "
729 "handling %s events\n", ibm->name);
56b6aeb0 730 } else {
35ff8b9f
HMH		 731 printk(TPACPI_ERR
732 "acpi_install_notify_handler(%s) failed: %d\n",
733 ibm->name, status);
56b6aeb0
HMH		 734 }
735 return -ENODEV;
736 }
8d376cd6 737 ibm->flags.acpi_notify_installed = 1;
56b6aeb0
HMH		 738 return 0;
739}
740
8d376cd6 741static int __init tpacpi_device_add(struct acpi_device *device)
56b6aeb0
HMH		 742{
743 return 0;
744}
745
6700121b 746static int __init register_tpacpi_subdriver(struct ibm_struct *ibm)
56b6aeb0 747{
5ae930e6 748 int rc;
56b6aeb0 749
fe08bc4b
HMH		 750 dbg_printk(TPACPI_DBG_INIT,
751 "registering %s as an ACPI driver\n", ibm->name);
752
8d376cd6
HMH		 753 BUG_ON(!ibm->acpi);
754
755 ibm->acpi->driver = kzalloc(sizeof(struct acpi_driver), GFP_KERNEL);
756 if (!ibm->acpi->driver) {
4f778b92
MK		 757 printk(TPACPI_ERR
758 "failed to allocate memory for ibm->acpi->driver\n");
5fba344c 759 return -ENOMEM;
56b6aeb0
HMH		 760 }
761
e0c7dfe7 762 sprintf(ibm->acpi->driver->name, "%s_%s", TPACPI_NAME, ibm->name);
8d376cd6 763 ibm->acpi->driver->ids = ibm->acpi->hid;
1ba90e3a 764
8d376cd6 765 ibm->acpi->driver->ops.add = &tpacpi_device_add;
56b6aeb0 766
5ae930e6
HMH		 767 rc = acpi_bus_register_driver(ibm->acpi->driver);
768 if (rc < 0) {
e0c7dfe7 769 printk(TPACPI_ERR "acpi_bus_register_driver(%s) failed: %d\n",
1ba90e3a 770 ibm->name, rc);
8d376cd6
HMH		 771 kfree(ibm->acpi->driver);
772 ibm->acpi->driver = NULL;
5ae930e6 773 } else if (!rc)
8d376cd6 774 ibm->flags.acpi_driver_registered = 1;
56b6aeb0 775
5ae930e6 776 return rc;
56b6aeb0
HMH		 777}
778
779
780/****************************************************************************
781 ****************************************************************************
782 *
783 * Procfs Helpers
784 *
785 ****************************************************************************
786 ****************************************************************************/
787
8d376cd6
HMH		 788static int dispatch_procfs_read(char *page, char **start, off_t off,
789 int count, int *eof, void *data)
56b6aeb0
HMH		 790{
791 struct ibm_struct *ibm = data;
792 int len;
793
794 if (!ibm || !ibm->read)
795 return -EINVAL;
796
797 len = ibm->read(page);
798 if (len < 0)
799 return len;
800
801 if (len <= off + count)
802 *eof = 1;
803 *start = page + off;
804 len -= off;
805 if (len > count)
806 len = count;
807 if (len < 0)
808 len = 0;
809
810 return len;
811}
812
8d376cd6 813static int dispatch_procfs_write(struct file *file,
35ff8b9f 814 const char __user *userbuf,
8d376cd6 815 unsigned long count, void *data)
56b6aeb0
HMH		 816{
817 struct ibm_struct *ibm = data;
818 char *kernbuf;
819 int ret;
820
821 if (!ibm || !ibm->write)
822 return -EINVAL;
5b05d469
MB		 823 if (count > PAGE_SIZE - 2)
824 return -EINVAL;
56b6aeb0
HMH		 825
826 kernbuf = kmalloc(count + 2, GFP_KERNEL);
827 if (!kernbuf)
828 return -ENOMEM;
1da177e4 829
56b6aeb0
HMH		 830 if (copy_from_user(kernbuf, userbuf, count)) {
831 kfree(kernbuf);
832 return -EFAULT;
833 }
1da177e4 834
56b6aeb0
HMH		 835 kernbuf[count] = 0;
836 strcat(kernbuf, ",");
837 ret = ibm->write(kernbuf);
838 if (ret == 0)
839 ret = count;
1da177e4 840
56b6aeb0
HMH		 841 kfree(kernbuf);
842
843 return ret;
1da177e4
LT		 844}
845
846static char *next_cmd(char **cmds)
847{
848 char *start = *cmds;
849 char *end;
850
851 while ((end = strchr(start, ',')) && end == start)
852 start = end + 1;
853
854 if (!end)
855 return NULL;
856
857 *end = 0;
858 *cmds = end + 1;
859 return start;
860}
861
56b6aeb0 862
54ae1501
HMH		 863/****************************************************************************
864 ****************************************************************************
865 *
7f5d1cd6 866 * Device model: input, hwmon and platform
54ae1501
HMH		 867 *
868 ****************************************************************************
869 ****************************************************************************/
870
94954cc6 871static struct platform_device *tpacpi_pdev;
7fd40029 872static struct platform_device *tpacpi_sensors_pdev;
1beeffe4 873static struct device *tpacpi_hwmon;
7f5d1cd6 874static struct input_dev *tpacpi_inputdev;
8523ed6f 875static struct mutex tpacpi_inputdev_send_mutex;
b21a15f6 876static LIST_HEAD(tpacpi_all_drivers);
e295e850 877
083f1760
HMH		 878static int tpacpi_suspend_handler(struct platform_device *pdev,
879 pm_message_t state)
880{
881 struct ibm_struct *ibm, *itmp;
882
883 list_for_each_entry_safe(ibm, itmp,
884 &tpacpi_all_drivers,
885 all_drivers) {
886 if (ibm->suspend)
887 (ibm->suspend)(state);
888 }
889
890 return 0;
891}
892
e295e850
HMH		 893static int tpacpi_resume_handler(struct platform_device *pdev)
894{
895 struct ibm_struct *ibm, *itmp;
896
897 list_for_each_entry_safe(ibm, itmp,
898 &tpacpi_all_drivers,
899 all_drivers) {
900 if (ibm->resume)
901 (ibm->resume)();
902 }
903
904 return 0;
905}
906
90d9d3c7
HMH		 907static void tpacpi_shutdown_handler(struct platform_device *pdev)
908{
909 struct ibm_struct *ibm, *itmp;
910
911 list_for_each_entry_safe(ibm, itmp,
912 &tpacpi_all_drivers,
913 all_drivers) {
914 if (ibm->shutdown)
915 (ibm->shutdown)();
916 }
917}
918
54ae1501
HMH		 919static struct platform_driver tpacpi_pdriver = {
920 .driver = {
e0c7dfe7 921 .name = TPACPI_DRVR_NAME,
54ae1501
HMH		 922 .owner = THIS_MODULE,
923 },
083f1760 924 .suspend = tpacpi_suspend_handler,
e295e850 925 .resume = tpacpi_resume_handler,
90d9d3c7 926 .shutdown = tpacpi_shutdown_handler,
54ae1501
HMH		 927};
928
7fd40029
HMH		 929static struct platform_driver tpacpi_hwmon_pdriver = {
930 .driver = {
e0c7dfe7 931 .name = TPACPI_HWMON_DRVR_NAME,
7fd40029
HMH		 932 .owner = THIS_MODULE,
933 },
934};
54ae1501 935
176750d6 936/*************************************************************************
b21a15f6 937 * sysfs support helpers
176750d6
HMH		 938 */
939
b21a15f6
HMH		 940struct attribute_set {
941 unsigned int members, max_members;
942 struct attribute_group group;
176750d6
HMH		 943};
944
7252374a
HMH		 945struct attribute_set_obj {
946 struct attribute_set s;
947 struct attribute *a;
948} __attribute__((packed));
949
950static struct attribute_set *create_attr_set(unsigned int max_members,
35ff8b9f 951 const char *name)
7252374a
HMH		 952{
953 struct attribute_set_obj *sobj;
954
955 if (max_members == 0)
956 return NULL;
957
958 /* Allocates space for implicit NULL at the end too */
959 sobj = kzalloc(sizeof(struct attribute_set_obj) +
960 max_members * sizeof(struct attribute *),
961 GFP_KERNEL);
962 if (!sobj)
963 return NULL;
964 sobj->s.max_members = max_members;
965 sobj->s.group.attrs = &sobj->a;
966 sobj->s.group.name = name;
967
968 return &sobj->s;
969}
970
f74a27d4
HMH		 971#define destroy_attr_set(_set) \
972 kfree(_set);
973
7252374a 974/* not multi-threaded safe, use it in a single thread per set */
35ff8b9f 975static int add_to_attr_set(struct attribute_set *s, struct attribute *attr)
7252374a
HMH		 976{
977 if (!s || !attr)
978 return -EINVAL;
979
980 if (s->members >= s->max_members)
981 return -ENOMEM;
982
983 s->group.attrs[s->members] = attr;
984 s->members++;
985
986 return 0;
987}
988
35ff8b9f 989static int add_many_to_attr_set(struct attribute_set *s,
7252374a
HMH		 990 struct attribute **attr,
991 unsigned int count)
992{
993 int i, res;
994
995 for (i = 0; i < count; i++) {
996 res = add_to_attr_set(s, attr[i]);
997 if (res)
998 return res;
999 }
1000
1001 return 0;
1002}
1003
35ff8b9f 1004static void delete_attr_set(struct attribute_set *s, struct kobject *kobj)
7252374a
HMH		 1005{
1006 sysfs_remove_group(kobj, &s->group);
1007 destroy_attr_set(s);
1008}
1009
f74a27d4
HMH		 1010#define register_attr_set_with_sysfs(_attr_set, _kobj) \
1011 sysfs_create_group(_kobj, &_attr_set->group)
1012
7252374a
HMH		 1013static int parse_strtoul(const char *buf,
1014 unsigned long max, unsigned long *value)
1015{
1016 char *endp;
1017
32afbf07
HMH		 1018 while (*buf && isspace(*buf))
1019 buf++;
7252374a
HMH		 1020 *value = simple_strtoul(buf, &endp, 0);
1021 while (*endp && isspace(*endp))
1022 endp++;
1023 if (*endp || *value > max)
1024 return -EINVAL;
1025
1026 return 0;
1027}
1028
d64c81c4
HMH		 1029static void tpacpi_disable_brightness_delay(void)
1030{
1031 if (acpi_evalf(hkey_handle, NULL, "PWMS", "qvd", 0))
1032 printk(TPACPI_NOTICE
1033 "ACPI backlight control delay disabled\n");
1034}
1035
b5972796
HMH		 1036static int __init tpacpi_query_bcl_levels(acpi_handle handle)
1037{
1038 struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
1039 union acpi_object *obj;
1040 int rc;
1041
1042 if (ACPI_SUCCESS(acpi_evaluate_object(handle, NULL, NULL, &buffer))) {
1043 obj = (union acpi_object *)buffer.pointer;
1044 if (!obj || (obj->type != ACPI_TYPE_PACKAGE)) {
1045 printk(TPACPI_ERR "Unknown _BCL data, "
1046 "please report this to %s\n", TPACPI_MAIL);
1047 rc = 0;
1048 } else {
1049 rc = obj->package.count;
1050 }
1051 } else {
1052 return 0;
1053 }
1054
1055 kfree(buffer.pointer);
1056 return rc;
1057}
1058
1059static acpi_status __init tpacpi_acpi_walk_find_bcl(acpi_handle handle,
1060 u32 lvl, void *context, void **rv)
1061{
1062 char name[ACPI_PATH_SEGMENT_LENGTH];
1063 struct acpi_buffer buffer = { sizeof(name), &name };
1064
1065 if (ACPI_SUCCESS(acpi_get_name(handle, ACPI_SINGLE_NAME, &buffer)) &&
1066 !strncmp("_BCL", name, sizeof(name) - 1)) {
1067 BUG_ON(!rv || !*rv);
1068 **(int **)rv = tpacpi_query_bcl_levels(handle);
1069 return AE_CTRL_TERMINATE;
1070 } else {
1071 return AE_OK;
1072 }
1073}
1074
1075/*
1076 * Returns 0 (no ACPI _BCL or _BCL invalid), or size of brightness map
1077 */
1078static int __init tpacpi_check_std_acpi_brightness_support(void)
1079{
1080 int status;
1081 int bcl_levels = 0;
1082 void *bcl_ptr = &bcl_levels;
1083
1084 if (!vid_handle) {
1085 TPACPI_ACPIHANDLE_INIT(vid);
1086 }
1087 if (!vid_handle)
1088 return 0;
1089
1090 /*
1091 * Search for a _BCL method, and execute it. This is safe on all
1092 * ThinkPads, and as a side-effect, _BCL will place a Lenovo Vista
1093 * BIOS in ACPI backlight control mode. We do NOT have to care
1094 * about calling the _BCL method in an enabled video device, any
1095 * will do for our purposes.
1096 */
1097
1098 status = acpi_walk_namespace(ACPI_TYPE_METHOD, vid_handle, 3,
1099 tpacpi_acpi_walk_find_bcl, NULL,
1100 &bcl_ptr);
1101
1102 if (ACPI_SUCCESS(status) && bcl_levels > 2) {
1103 tp_features.bright_acpimode = 1;
1104 return (bcl_levels - 2);
1105 }
1106
1107 return 0;
1108}
1109
19d337df
JB		 1110static void printk_deprecated_attribute(const char * const what,
1111 const char * const details)
1112{
1113 tpacpi_log_usertask("deprecated sysfs attribute");
1114 printk(TPACPI_WARN "WARNING: sysfs attribute %s is deprecated and "
1115 "will be removed. %s\n",
1116 what, details);
1117}
1118
1119/*************************************************************************
1120 * rfkill and radio control support helpers
1121 */
1122
1123/*
1124 * ThinkPad-ACPI firmware handling model:
1125 *
1126 * WLSW (master wireless switch) is event-driven, and is common to all
1127 * firmware-controlled radios. It cannot be controlled, just monitored,
1128 * as expected. It overrides all radio state in firmware
1129 *
1130 * The kernel, a masked-off hotkey, and WLSW can change the radio state
1131 * (TODO: verify how WLSW interacts with the returned radio state).
1132 *
1133 * The only time there are shadow radio state changes, is when
1134 * masked-off hotkeys are used.
1135 */
1136
1137/*
1138 * Internal driver API for radio state:
1139 *
1140 * int: < 0 = error, otherwise enum tpacpi_rfkill_state
1141 * bool: true means radio blocked (off)
1142 */
1143enum tpacpi_rfkill_state {
1144 TPACPI_RFK_RADIO_OFF = 0,
1145 TPACPI_RFK_RADIO_ON
1146};
1147
1148/* rfkill switches */
1149enum tpacpi_rfk_id {
1150 TPACPI_RFK_BLUETOOTH_SW_ID = 0,
1151 TPACPI_RFK_WWAN_SW_ID,
1152 TPACPI_RFK_UWB_SW_ID,
1153 TPACPI_RFK_SW_MAX
1154};
1155
1156static const char *tpacpi_rfkill_names[] = {
1157 [TPACPI_RFK_BLUETOOTH_SW_ID] = "bluetooth",
1158 [TPACPI_RFK_WWAN_SW_ID] = "wwan",
1159 [TPACPI_RFK_UWB_SW_ID] = "uwb",
1160 [TPACPI_RFK_SW_MAX] = NULL
1161};
1162
1163/* ThinkPad-ACPI rfkill subdriver */
1164struct tpacpi_rfk {
1165 struct rfkill *rfkill;
1166 enum tpacpi_rfk_id id;
1167 const struct tpacpi_rfk_ops *ops;
1168};
1169
1170struct tpacpi_rfk_ops {
1171 /* firmware interface */
1172 int (*get_status)(void);
1173 int (*set_status)(const enum tpacpi_rfkill_state);
1174};
1175
1176static struct tpacpi_rfk *tpacpi_rfkill_switches[TPACPI_RFK_SW_MAX];
1177
1178/* Query FW and update rfkill sw state for a given rfkill switch */
1179static int tpacpi_rfk_update_swstate(const struct tpacpi_rfk *tp_rfk)
1180{
1181 int status;
1182
1183 if (!tp_rfk)
1184 return -ENODEV;
1185
1186 status = (tp_rfk->ops->get_status)();
1187 if (status < 0)
1188 return status;
1189
1190 rfkill_set_sw_state(tp_rfk->rfkill,
1191 (status == TPACPI_RFK_RADIO_OFF));
1192
1193 return status;
1194}
1195
1196/* Query FW and update rfkill sw state for all rfkill switches */
1197static void tpacpi_rfk_update_swstate_all(void)
1198{
1199 unsigned int i;
1200
1201 for (i = 0; i < TPACPI_RFK_SW_MAX; i++)
1202 tpacpi_rfk_update_swstate(tpacpi_rfkill_switches[i]);
1203}
1204
1205/*
1206 * Sync the HW-blocking state of all rfkill switches,
1207 * do notice it causes the rfkill core to schedule uevents
1208 */
1209static void tpacpi_rfk_update_hwblock_state(bool blocked)
1210{
1211 unsigned int i;
1212 struct tpacpi_rfk *tp_rfk;
1213
1214 for (i = 0; i < TPACPI_RFK_SW_MAX; i++) {
1215 tp_rfk = tpacpi_rfkill_switches[i];
1216 if (tp_rfk) {
1217 if (rfkill_set_hw_state(tp_rfk->rfkill,
1218 blocked)) {
1219 /* ignore -- we track sw block */
1220 }
1221 }
1222 }
1223}
1224
1225/* Call to get the WLSW state from the firmware */
1226static int hotkey_get_wlsw(void);
1227
1228/* Call to query WLSW state and update all rfkill switches */
1229static bool tpacpi_rfk_check_hwblock_state(void)
1230{
1231 int res = hotkey_get_wlsw();
1232 int hw_blocked;
1233
1234 /* When unknown or unsupported, we have to assume it is unblocked */
1235 if (res < 0)
1236 return false;
1237
1238 hw_blocked = (res == TPACPI_RFK_RADIO_OFF);
1239 tpacpi_rfk_update_hwblock_state(hw_blocked);
1240
1241 return hw_blocked;
1242}
1243
1244static int tpacpi_rfk_hook_set_block(void *data, bool blocked)
1245{
1246 struct tpacpi_rfk *tp_rfk = data;
1247 int res;
1248
1249 dbg_printk(TPACPI_DBG_RFKILL,
1250 "request to change radio state to %s\n",
1251 blocked ? "blocked" : "unblocked");
1252
1253 /* try to set radio state */
1254 res = (tp_rfk->ops->set_status)(blocked ?
1255 TPACPI_RFK_RADIO_OFF : TPACPI_RFK_RADIO_ON);
1256
1257 /* and update the rfkill core with whatever the FW really did */
1258 tpacpi_rfk_update_swstate(tp_rfk);
1259
1260 return (res < 0) ? res : 0;
1261}
1262
1263static const struct rfkill_ops tpacpi_rfk_rfkill_ops = {
1264 .set_block = tpacpi_rfk_hook_set_block,
1265};
1266
1267static int __init tpacpi_new_rfkill(const enum tpacpi_rfk_id id,
1268 const struct tpacpi_rfk_ops *tp_rfkops,
0e74dc26
HMH		 1269 const enum rfkill_type rfktype,
1270 const char *name,
19d337df 1271 const bool set_default)
0e74dc26 1272{
19d337df 1273 struct tpacpi_rfk *atp_rfk;
0e74dc26 1274 int res;
06d5caf4 1275 bool sw_state = false;
5451a923 1276 bool hw_state;
06d5caf4 1277 int sw_status;
90d9d3c7 1278
19d337df
JB		 1279 BUG_ON(id >= TPACPI_RFK_SW_MAX || tpacpi_rfkill_switches[id]);
1280
19d337df
JB		 1281 atp_rfk = kzalloc(sizeof(struct tpacpi_rfk), GFP_KERNEL);
1282 if (atp_rfk)
1283 atp_rfk->rfkill = rfkill_alloc(name,
1284 &tpacpi_pdev->dev,
1285 rfktype,
1286 &tpacpi_rfk_rfkill_ops,
1287 atp_rfk);
1288 if (!atp_rfk || !atp_rfk->rfkill) {
0e74dc26
HMH		 1289 printk(TPACPI_ERR
1290 "failed to allocate memory for rfkill class\n");
19d337df 1291 kfree(atp_rfk);
0e74dc26
HMH		 1292 return -ENOMEM;
1293 }
1294
19d337df
JB		 1295 atp_rfk->id = id;
1296 atp_rfk->ops = tp_rfkops;
0e74dc26 1297
06d5caf4
AJ		 1298 sw_status = (tp_rfkops->get_status)();
1299 if (sw_status < 0) {
b3fa1329
AJ		 1300 printk(TPACPI_ERR
1301 "failed to read initial state for %s, error %d\n",
06d5caf4 1302 name, sw_status);
b3fa1329 1303 } else {
06d5caf4 1304 sw_state = (sw_status == TPACPI_RFK_RADIO_OFF);
b3fa1329
AJ		 1305 if (set_default) {
1306 /* try to keep the initial state, since we ask the
1307 * firmware to preserve it across S5 in NVRAM */
06d5caf4 1308 rfkill_init_sw_state(atp_rfk->rfkill, sw_state);
b3fa1329
AJ		 1309 }
1310 }
5451a923
HMH		 1311 hw_state = tpacpi_rfk_check_hwblock_state();
1312 rfkill_set_hw_state(atp_rfk->rfkill, hw_state);
19d337df
JB		 1313
1314 res = rfkill_register(atp_rfk->rfkill);
0e74dc26
HMH		 1315 if (res < 0) {
1316 printk(TPACPI_ERR
1317 "failed to register %s rfkill switch: %d\n",
1318 name, res);
19d337df
JB		 1319 rfkill_destroy(atp_rfk->rfkill);
1320 kfree(atp_rfk);
0e74dc26
HMH		 1321 return res;
1322 }
1323
19d337df 1324 tpacpi_rfkill_switches[id] = atp_rfk;
5451a923
HMH		 1325
1326 printk(TPACPI_INFO "rfkill switch %s: radio is %sblocked\n",
1327 name, (sw_state || hw_state) ? "" : "un");
0e74dc26
HMH		 1328 return 0;
1329}
1330
19d337df 1331static void tpacpi_destroy_rfkill(const enum tpacpi_rfk_id id)
73a94d86 1332{
19d337df
JB		 1333 struct tpacpi_rfk *tp_rfk;
1334
1335 BUG_ON(id >= TPACPI_RFK_SW_MAX);
1336
1337 tp_rfk = tpacpi_rfkill_switches[id];
1338 if (tp_rfk) {
1339 rfkill_unregister(tp_rfk->rfkill);
5f0dadb4 1340 rfkill_destroy(tp_rfk->rfkill);
19d337df
JB		 1341 tpacpi_rfkill_switches[id] = NULL;
1342 kfree(tp_rfk);
1343 }
73a94d86
HMH		 1344}
1345
1346static void printk_deprecated_rfkill_attribute(const char * const what)
1347{
1348 printk_deprecated_attribute(what,
1349 "Please switch to generic rfkill before year 2010");
1350}
1351
19d337df
JB		 1352/* sysfs <radio> enable ------------------------------------------------ */
1353static ssize_t tpacpi_rfk_sysfs_enable_show(const enum tpacpi_rfk_id id,
1354 struct device_attribute *attr,
1355 char *buf)
1356{
1357 int status;
1358
1359 printk_deprecated_rfkill_attribute(attr->attr.name);
1360
1361 /* This is in the ABI... */
1362 if (tpacpi_rfk_check_hwblock_state()) {
1363 status = TPACPI_RFK_RADIO_OFF;
1364 } else {
1365 status = tpacpi_rfk_update_swstate(tpacpi_rfkill_switches[id]);
1366 if (status < 0)
1367 return status;
1368 }
1369
1370 return snprintf(buf, PAGE_SIZE, "%d\n",
1371 (status == TPACPI_RFK_RADIO_ON) ? 1 : 0);
1372}
1373
1374static ssize_t tpacpi_rfk_sysfs_enable_store(const enum tpacpi_rfk_id id,
1375 struct device_attribute *attr,
1376 const char *buf, size_t count)
1377{
1378 unsigned long t;
1379 int res;
1380
1381 printk_deprecated_rfkill_attribute(attr->attr.name);
1382
1383 if (parse_strtoul(buf, 1, &t))
1384 return -EINVAL;
1385
1386 tpacpi_disclose_usertask(attr->attr.name, "set to %ld\n", t);
1387
1388 /* This is in the ABI... */
1389 if (tpacpi_rfk_check_hwblock_state() && !!t)
1390 return -EPERM;
1391
1392 res = tpacpi_rfkill_switches[id]->ops->set_status((!!t) ?
1393 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF);
1394 tpacpi_rfk_update_swstate(tpacpi_rfkill_switches[id]);
1395
1396 return (res < 0) ? res : count;
1397}
1398
1399/* procfs -------------------------------------------------------------- */
1400static int tpacpi_rfk_procfs_read(const enum tpacpi_rfk_id id, char *p)
1401{
1402 int len = 0;
1403
1404 if (id >= TPACPI_RFK_SW_MAX)
1405 len += sprintf(p + len, "status:\t\tnot supported\n");
1406 else {
1407 int status;
1408
1409 /* This is in the ABI... */
1410 if (tpacpi_rfk_check_hwblock_state()) {
1411 status = TPACPI_RFK_RADIO_OFF;
1412 } else {
1413 status = tpacpi_rfk_update_swstate(
1414 tpacpi_rfkill_switches[id]);
1415 if (status < 0)
1416 return status;
1417 }
1418
1419 len += sprintf(p + len, "status:\t\t%s\n",
1420 (status == TPACPI_RFK_RADIO_ON) ?
1421 "enabled" : "disabled");
1422 len += sprintf(p + len, "commands:\tenable, disable\n");
1423 }
1424
1425 return len;
1426}
1427
1428static int tpacpi_rfk_procfs_write(const enum tpacpi_rfk_id id, char *buf)
1429{
1430 char *cmd;
1431 int status = -1;
1432 int res = 0;
1433
1434 if (id >= TPACPI_RFK_SW_MAX)
1435 return -ENODEV;
1436
1437 while ((cmd = next_cmd(&buf))) {
1438 if (strlencmp(cmd, "enable") == 0)
1439 status = TPACPI_RFK_RADIO_ON;
1440 else if (strlencmp(cmd, "disable") == 0)
1441 status = TPACPI_RFK_RADIO_OFF;
1442 else
1443 return -EINVAL;
1444 }
1445
1446 if (status != -1) {
1447 tpacpi_disclose_usertask("procfs", "attempt to %s %s\n",
1448 (status == TPACPI_RFK_RADIO_ON) ?
1449 "enable" : "disable",
1450 tpacpi_rfkill_names[id]);
1451 res = (tpacpi_rfkill_switches[id]->ops->set_status)(status);
1452 tpacpi_rfk_update_swstate(tpacpi_rfkill_switches[id]);
1453 }
1454
1455 return res;
1456}
1457
56b6aeb0 1458/*************************************************************************
b21a15f6 1459 * thinkpad-acpi driver attributes
56b6aeb0
HMH		 1460 */
1461
b21a15f6
HMH		 1462/* interface_version --------------------------------------------------- */
1463static ssize_t tpacpi_driver_interface_version_show(
1464 struct device_driver *drv,
1465 char *buf)
1da177e4 1466{
b21a15f6
HMH		 1467 return snprintf(buf, PAGE_SIZE, "0x%08x\n", TPACPI_SYSFS_VERSION);
1468}
1469
1470static DRIVER_ATTR(interface_version, S_IRUGO,
1471 tpacpi_driver_interface_version_show, NULL);
1472
1473/* debug_level --------------------------------------------------------- */
1474static ssize_t tpacpi_driver_debug_show(struct device_driver *drv,
1475 char *buf)
1476{
1477 return snprintf(buf, PAGE_SIZE, "0x%04x\n", dbg_level);
1478}
1479
1480static ssize_t tpacpi_driver_debug_store(struct device_driver *drv,
1481 const char *buf, size_t count)
1482{
1483 unsigned long t;
1484
1485 if (parse_strtoul(buf, 0xffff, &t))
1486 return -EINVAL;
1487
1488 dbg_level = t;
1489
1490 return count;
1491}
1492
1493static DRIVER_ATTR(debug_level, S_IWUSR | S_IRUGO,
1494 tpacpi_driver_debug_show, tpacpi_driver_debug_store);
1495
1496/* version ------------------------------------------------------------- */
1497static ssize_t tpacpi_driver_version_show(struct device_driver *drv,
1498 char *buf)
1499{
35ff8b9f
HMH		 1500 return snprintf(buf, PAGE_SIZE, "%s v%s\n",
1501 TPACPI_DESC, TPACPI_VERSION);
b21a15f6
HMH		 1502}
1503
1504static DRIVER_ATTR(version, S_IRUGO,
1505 tpacpi_driver_version_show, NULL);
1506
1507/* --------------------------------------------------------------------- */
1508
a73f3091
HMH		 1509#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
1510
a73f3091
HMH		 1511/* wlsw_emulstate ------------------------------------------------------ */
1512static ssize_t tpacpi_driver_wlsw_emulstate_show(struct device_driver *drv,
1513 char *buf)
1514{
1515 return snprintf(buf, PAGE_SIZE, "%d\n", !!tpacpi_wlsw_emulstate);
1516}
1517
1518static ssize_t tpacpi_driver_wlsw_emulstate_store(struct device_driver *drv,
1519 const char *buf, size_t count)
1520{
1521 unsigned long t;
1522
1523 if (parse_strtoul(buf, 1, &t))
1524 return -EINVAL;
1525
19d337df 1526 if (tpacpi_wlsw_emulstate != !!t) {
a73f3091 1527 tpacpi_wlsw_emulstate = !!t;
19d337df
JB		 1528 tpacpi_rfk_update_hwblock_state(!t); /* negative logic */
1529 }
a73f3091
HMH		 1530
1531 return count;
1532}
1533
1534static DRIVER_ATTR(wlsw_emulstate, S_IWUSR | S_IRUGO,
1535 tpacpi_driver_wlsw_emulstate_show,
1536 tpacpi_driver_wlsw_emulstate_store);
1537
1538/* bluetooth_emulstate ------------------------------------------------- */
1539static ssize_t tpacpi_driver_bluetooth_emulstate_show(
1540 struct device_driver *drv,
1541 char *buf)
1542{
1543 return snprintf(buf, PAGE_SIZE, "%d\n", !!tpacpi_bluetooth_emulstate);
1544}
1545
1546static ssize_t tpacpi_driver_bluetooth_emulstate_store(
1547 struct device_driver *drv,
1548 const char *buf, size_t count)
1549{
1550 unsigned long t;
1551
1552 if (parse_strtoul(buf, 1, &t))
1553 return -EINVAL;
1554
1555 tpacpi_bluetooth_emulstate = !!t;
1556
1557 return count;
1558}
1559
1560static DRIVER_ATTR(bluetooth_emulstate, S_IWUSR | S_IRUGO,
1561 tpacpi_driver_bluetooth_emulstate_show,
1562 tpacpi_driver_bluetooth_emulstate_store);
1563
1564/* wwan_emulstate ------------------------------------------------- */
1565static ssize_t tpacpi_driver_wwan_emulstate_show(
1566 struct device_driver *drv,
1567 char *buf)
1568{
1569 return snprintf(buf, PAGE_SIZE, "%d\n", !!tpacpi_wwan_emulstate);
1570}
1571
1572static ssize_t tpacpi_driver_wwan_emulstate_store(
1573 struct device_driver *drv,
1574 const char *buf, size_t count)
1575{
1576 unsigned long t;
1577
1578 if (parse_strtoul(buf, 1, &t))
1579 return -EINVAL;
1580
1581 tpacpi_wwan_emulstate = !!t;
1582
1583 return count;
1584}
1585
1586static DRIVER_ATTR(wwan_emulstate, S_IWUSR | S_IRUGO,
1587 tpacpi_driver_wwan_emulstate_show,
1588 tpacpi_driver_wwan_emulstate_store);
1589
0045c0aa
HMH		 1590/* uwb_emulstate ------------------------------------------------- */
1591static ssize_t tpacpi_driver_uwb_emulstate_show(
1592 struct device_driver *drv,
1593 char *buf)
1594{
1595 return snprintf(buf, PAGE_SIZE, "%d\n", !!tpacpi_uwb_emulstate);
1596}
1597
1598static ssize_t tpacpi_driver_uwb_emulstate_store(
1599 struct device_driver *drv,
1600 const char *buf, size_t count)
1601{
1602 unsigned long t;
1603
1604 if (parse_strtoul(buf, 1, &t))
1605 return -EINVAL;
1606
1607 tpacpi_uwb_emulstate = !!t;
1608
1609 return count;
1610}
1611
1612static DRIVER_ATTR(uwb_emulstate, S_IWUSR | S_IRUGO,
1613 tpacpi_driver_uwb_emulstate_show,
1614 tpacpi_driver_uwb_emulstate_store);
a73f3091
HMH		 1615#endif
1616
1617/* --------------------------------------------------------------------- */
1618
35ff8b9f 1619static struct driver_attribute *tpacpi_driver_attributes[] = {
b21a15f6
HMH		 1620 &driver_attr_debug_level, &driver_attr_version,
1621 &driver_attr_interface_version,
1622};
1623
1624static int __init tpacpi_create_driver_attributes(struct device_driver *drv)
1625{
1626 int i, res;
1627
1628 i = 0;
1629 res = 0;
1630 while (!res && i < ARRAY_SIZE(tpacpi_driver_attributes)) {
1631 res = driver_create_file(drv, tpacpi_driver_attributes[i]);
1632 i++;
1633 }
1634
a73f3091
HMH		 1635#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
1636 if (!res && dbg_wlswemul)
1637 res = driver_create_file(drv, &driver_attr_wlsw_emulstate);
1638 if (!res && dbg_bluetoothemul)
1639 res = driver_create_file(drv, &driver_attr_bluetooth_emulstate);
1640 if (!res && dbg_wwanemul)
1641 res = driver_create_file(drv, &driver_attr_wwan_emulstate);
0045c0aa
HMH		 1642 if (!res && dbg_uwbemul)
1643 res = driver_create_file(drv, &driver_attr_uwb_emulstate);
a73f3091
HMH		 1644#endif
1645
b21a15f6
HMH		 1646 return res;
1647}
1648
1649static void tpacpi_remove_driver_attributes(struct device_driver *drv)
1650{
1651 int i;
1652
35ff8b9f 1653 for (i = 0; i < ARRAY_SIZE(tpacpi_driver_attributes); i++)
b21a15f6 1654 driver_remove_file(drv, tpacpi_driver_attributes[i]);
a73f3091
HMH		 1655
1656#ifdef THINKPAD_ACPI_DEBUGFACILITIES
1657 driver_remove_file(drv, &driver_attr_wlsw_emulstate);
1658 driver_remove_file(drv, &driver_attr_bluetooth_emulstate);
1659 driver_remove_file(drv, &driver_attr_wwan_emulstate);
0045c0aa 1660 driver_remove_file(drv, &driver_attr_uwb_emulstate);
a73f3091 1661#endif
b21a15f6
HMH		 1662}
1663
600a99fa
HMH		 1664/*************************************************************************
1665 * Firmware Data
1666 */
1667
1668/*
1669 * Table of recommended minimum BIOS versions
1670 *
1671 * Reasons for listing:
1672 * 1. Stable BIOS, listed because the unknown ammount of
1673 * bugs and bad ACPI behaviour on older versions
1674 *
1675 * 2. BIOS or EC fw with known bugs that trigger on Linux
1676 *
1677 * 3. BIOS with known reduced functionality in older versions
1678 *
1679 * We recommend the latest BIOS and EC version.
1680 * We only support the latest BIOS and EC fw version as a rule.
1681 *
1682 * Sources: IBM ThinkPad Public Web Documents (update changelogs),
1683 * Information from users in ThinkWiki
e675abaf
HMH		 1684 *
1685 * WARNING: we use this table also to detect that the machine is
1686 * a ThinkPad in some cases, so don't remove entries lightly.
600a99fa
HMH		 1687 */
1688
1689#define TPV_Q(__v, __id1, __id2, __bv1, __bv2) \
1690 { .vendor = (__v), \
1691 .bios = TPID(__id1, __id2), \
1692 .ec = TPACPI_MATCH_ANY, \
1693 .quirks = TPACPI_MATCH_ANY << 16 \
1694 | (__bv1) << 8 | (__bv2) }
1695
1696#define TPV_Q_X(__v, __bid1, __bid2, __bv1, __bv2, \
275014ae 1697 __eid, __ev1, __ev2) \
600a99fa
HMH		 1698 { .vendor = (__v), \
1699 .bios = TPID(__bid1, __bid2), \
275014ae 1700 .ec = __eid, \
600a99fa
HMH		 1701 .quirks = (__ev1) << 24 | (__ev2) << 16 \
1702 | (__bv1) << 8 | (__bv2) }
1703
1704#define TPV_QI0(__id1, __id2, __bv1, __bv2) \
1705 TPV_Q(PCI_VENDOR_ID_IBM, __id1, __id2, __bv1, __bv2)
1706
275014ae 1707/* Outdated IBM BIOSes often lack the EC id string */
600a99fa
HMH		 1708#define TPV_QI1(__id1, __id2, __bv1, __bv2, __ev1, __ev2) \
1709 TPV_Q_X(PCI_VENDOR_ID_IBM, __id1, __id2, \
275014ae
HMH		 1710 __bv1, __bv2, TPID(__id1, __id2), \
1711 __ev1, __ev2), \
1712 TPV_Q_X(PCI_VENDOR_ID_IBM, __id1, __id2, \
1713 __bv1, __bv2, TPACPI_MATCH_UNKNOWN, \
1714 __ev1, __ev2)
600a99fa 1715
275014ae 1716/* Outdated IBM BIOSes often lack the EC id string */
600a99fa
HMH		 1717#define TPV_QI2(__bid1, __bid2, __bv1, __bv2, \
1718 __eid1, __eid2, __ev1, __ev2) \
1719 TPV_Q_X(PCI_VENDOR_ID_IBM, __bid1, __bid2, \
275014ae
HMH		 1720 __bv1, __bv2, TPID(__eid1, __eid2), \
1721 __ev1, __ev2), \
1722 TPV_Q_X(PCI_VENDOR_ID_IBM, __bid1, __bid2, \
1723 __bv1, __bv2, TPACPI_MATCH_UNKNOWN, \
1724 __ev1, __ev2)
600a99fa
HMH		 1725
1726#define TPV_QL0(__id1, __id2, __bv1, __bv2) \
1727 TPV_Q(PCI_VENDOR_ID_LENOVO, __id1, __id2, __bv1, __bv2)
1728
1729#define TPV_QL1(__id1, __id2, __bv1, __bv2, __ev1, __ev2) \
1730 TPV_Q_X(PCI_VENDOR_ID_LENOVO, __id1, __id2, \
275014ae
HMH		 1731 __bv1, __bv2, TPID(__id1, __id2), \
1732 __ev1, __ev2)
600a99fa
HMH		 1733
1734#define TPV_QL2(__bid1, __bid2, __bv1, __bv2, \
1735 __eid1, __eid2, __ev1, __ev2) \
1736 TPV_Q_X(PCI_VENDOR_ID_LENOVO, __bid1, __bid2, \
275014ae
HMH		 1737 __bv1, __bv2, TPID(__eid1, __eid2), \
1738 __ev1, __ev2)
600a99fa
HMH		 1739
1740static const struct tpacpi_quirk tpacpi_bios_version_qtable[] __initconst = {
1741 /* Numeric models ------------------ */
1742 /* FW MODEL BIOS VERS */
1743 TPV_QI0('I', 'M', '6', '5'), /* 570 */
1744 TPV_QI0('I', 'U', '2', '6'), /* 570E */
1745 TPV_QI0('I', 'B', '5', '4'), /* 600 */
1746 TPV_QI0('I', 'H', '4', '7'), /* 600E */
1747 TPV_QI0('I', 'N', '3', '6'), /* 600E */
1748 TPV_QI0('I', 'T', '5', '5'), /* 600X */
1749 TPV_QI0('I', 'D', '4', '8'), /* 770, 770E, 770ED */
1750 TPV_QI0('I', 'I', '4', '2'), /* 770X */
1751 TPV_QI0('I', 'O', '2', '3'), /* 770Z */
1752
1753 /* A-series ------------------------- */
1754 /* FW MODEL BIOS VERS EC VERS */
1755 TPV_QI0('I', 'W', '5', '9'), /* A20m */
1756 TPV_QI0('I', 'V', '6', '9'), /* A20p */
1757 TPV_QI0('1', '0', '2', '6'), /* A21e, A22e */
1758 TPV_QI0('K', 'U', '3', '6'), /* A21e */
1759 TPV_QI0('K', 'X', '3', '6'), /* A21m, A22m */
1760 TPV_QI0('K', 'Y', '3', '8'), /* A21p, A22p */
1761 TPV_QI0('1', 'B', '1', '7'), /* A22e */
1762 TPV_QI0('1', '3', '2', '0'), /* A22m */
1763 TPV_QI0('1', 'E', '7', '3'), /* A30/p (0) */
1764 TPV_QI1('1', 'G', '4', '1', '1', '7'), /* A31/p (0) */
1765 TPV_QI1('1', 'N', '1', '6', '0', '7'), /* A31/p (0) */
1766
1767 /* G-series ------------------------- */
1768 /* FW MODEL BIOS VERS */
1769 TPV_QI0('1', 'T', 'A', '6'), /* G40 */
1770 TPV_QI0('1', 'X', '5', '7'), /* G41 */
1771
1772 /* R-series, T-series --------------- */
1773 /* FW MODEL BIOS VERS EC VERS */
1774 TPV_QI0('1', 'C', 'F', '0'), /* R30 */
1775 TPV_QI0('1', 'F', 'F', '1'), /* R31 */
1776 TPV_QI0('1', 'M', '9', '7'), /* R32 */
1777 TPV_QI0('1', 'O', '6', '1'), /* R40 */
1778 TPV_QI0('1', 'P', '6', '5'), /* R40 */
1779 TPV_QI0('1', 'S', '7', '0'), /* R40e */
1780 TPV_QI1('1', 'R', 'D', 'R', '7', '1'), /* R50/p, R51,
1781 T40/p, T41/p, T42/p (1) */
1782 TPV_QI1('1', 'V', '7', '1', '2', '8'), /* R50e, R51 (1) */
1783 TPV_QI1('7', '8', '7', '1', '0', '6'), /* R51e (1) */
1784 TPV_QI1('7', '6', '6', '9', '1', '6'), /* R52 (1) */
1785 TPV_QI1('7', '0', '6', '9', '2', '8'), /* R52, T43 (1) */
1786
1787 TPV_QI0('I', 'Y', '6', '1'), /* T20 */
1788 TPV_QI0('K', 'Z', '3', '4'), /* T21 */
1789 TPV_QI0('1', '6', '3', '2'), /* T22 */
1790 TPV_QI1('1', 'A', '6', '4', '2', '3'), /* T23 (0) */
1791 TPV_QI1('1', 'I', '7', '1', '2', '0'), /* T30 (0) */
1792 TPV_QI1('1', 'Y', '6', '5', '2', '9'), /* T43/p (1) */
1793
1794 TPV_QL1('7', '9', 'E', '3', '5', '0'), /* T60/p */
1795 TPV_QL1('7', 'C', 'D', '2', '2', '2'), /* R60, R60i */
90765c6a 1796 TPV_QL1('7', 'E', 'D', '0', '1', '5'), /* R60e, R60i */
600a99fa
HMH		 1797
1798 /* BIOS FW BIOS VERS EC FW EC VERS */
1799 TPV_QI2('1', 'W', '9', '0', '1', 'V', '2', '8'), /* R50e (1) */
1800 TPV_QL2('7', 'I', '3', '4', '7', '9', '5', '0'), /* T60/p wide */
1801
1802 /* X-series ------------------------- */
1803 /* FW MODEL BIOS VERS EC VERS */
1804 TPV_QI0('I', 'Z', '9', 'D'), /* X20, X21 */
1805 TPV_QI0('1', 'D', '7', '0'), /* X22, X23, X24 */
1806 TPV_QI1('1', 'K', '4', '8', '1', '8'), /* X30 (0) */
1807 TPV_QI1('1', 'Q', '9', '7', '2', '3'), /* X31, X32 (0) */
1808 TPV_QI1('1', 'U', 'D', '3', 'B', '2'), /* X40 (0) */
1809 TPV_QI1('7', '4', '6', '4', '2', '7'), /* X41 (0) */
1810 TPV_QI1('7', '5', '6', '0', '2', '0'), /* X41t (0) */
1811
90765c6a
HMH		 1812 TPV_QL1('7', 'B', 'D', '7', '4', '0'), /* X60/s */
1813 TPV_QL1('7', 'J', '3', '0', '1', '3'), /* X60t */
600a99fa
HMH		 1814
1815 /* (0) - older versions lack DMI EC fw string and functionality */
1816 /* (1) - older versions known to lack functionality */
1817};
1818
1819#undef TPV_QL1
1820#undef TPV_QL0
1821#undef TPV_QI2
1822#undef TPV_QI1
1823#undef TPV_QI0
1824#undef TPV_Q_X
1825#undef TPV_Q
1826
1827static void __init tpacpi_check_outdated_fw(void)
1828{
1829 unsigned long fwvers;
1830 u16 ec_version, bios_version;
1831
1832 fwvers = tpacpi_check_quirks(tpacpi_bios_version_qtable,
1833 ARRAY_SIZE(tpacpi_bios_version_qtable));
1834
1835 if (!fwvers)
1836 return;
1837
1838 bios_version = fwvers & 0xffffU;
1839 ec_version = (fwvers >> 16) & 0xffffU;
1840
1841 /* note that unknown versions are set to 0x0000 and we use that */
1842 if ((bios_version > thinkpad_id.bios_release) ||
1843 (ec_version > thinkpad_id.ec_release &&
1844 ec_version != TPACPI_MATCH_ANY)) {
1845 /*
1846 * The changelogs would let us track down the exact
1847 * reason, but it is just too much of a pain to track
1848 * it. We only list BIOSes that are either really
1849 * broken, or really stable to begin with, so it is
1850 * best if the user upgrades the firmware anyway.
1851 */
1852 printk(TPACPI_WARN
1853 "WARNING: Outdated ThinkPad BIOS/EC firmware\n");
1854 printk(TPACPI_WARN
1855 "WARNING: This firmware may be missing critical bug "
1856 "fixes and/or important features\n");
1857 }
1858}
1859
e675abaf
HMH		 1860static bool __init tpacpi_is_fw_known(void)
1861{
1862 return tpacpi_check_quirks(tpacpi_bios_version_qtable,
1863 ARRAY_SIZE(tpacpi_bios_version_qtable)) != 0;
1864}
1865
b21a15f6
HMH		 1866/****************************************************************************
1867 ****************************************************************************
1868 *
1869 * Subdrivers
1870 *
1871 ****************************************************************************
1872 ****************************************************************************/
1873
1874/*************************************************************************
1875 * thinkpad-acpi init subdriver
1876 */
1877
1878static int __init thinkpad_acpi_driver_init(struct ibm_init_struct *iibm)
1879{
e0c7dfe7
HMH		 1880 printk(TPACPI_INFO "%s v%s\n", TPACPI_DESC, TPACPI_VERSION);
1881 printk(TPACPI_INFO "%s\n", TPACPI_URL);
b21a15f6 1882
e0c7dfe7 1883 printk(TPACPI_INFO "ThinkPad BIOS %s, EC %s\n",
b21a15f6
HMH		 1884 (thinkpad_id.bios_version_str) ?
1885 thinkpad_id.bios_version_str : "unknown",
1886 (thinkpad_id.ec_version_str) ?
1887 thinkpad_id.ec_version_str : "unknown");
d5a2f2f1
HMH		 1888
1889 if (thinkpad_id.vendor && thinkpad_id.model_str)
8c74adbc 1890 printk(TPACPI_INFO "%s %s, model %s\n",
d5a2f2f1
HMH		 1891 (thinkpad_id.vendor == PCI_VENDOR_ID_IBM) ?
1892 "IBM" : ((thinkpad_id.vendor ==
1893 PCI_VENDOR_ID_LENOVO) ?
1894 "Lenovo" : "Unknown vendor"),
8c74adbc
HMH		 1895 thinkpad_id.model_str,
1896 (thinkpad_id.nummodel_str) ?
1897 thinkpad_id.nummodel_str : "unknown");
3945ac36 1898
600a99fa 1899 tpacpi_check_outdated_fw();
1da177e4
LT		 1900 return 0;
1901}
1902
643f12db 1903static int thinkpad_acpi_driver_read(char *p)
1da177e4
LT		 1904{
1905 int len = 0;
1906
e0c7dfe7
HMH		 1907 len += sprintf(p + len, "driver:\t\t%s\n", TPACPI_DESC);
1908 len += sprintf(p + len, "version:\t%s\n", TPACPI_VERSION);
1da177e4
LT		 1909
1910 return len;
1911}
1912
a5763f22
HMH		 1913static struct ibm_struct thinkpad_acpi_driver_data = {
1914 .name = "driver",
1915 .read = thinkpad_acpi_driver_read,
1916};
1917
56b6aeb0
HMH		 1918/*************************************************************************
1919 * Hotkey subdriver
1920 */
1921
0d922e3b
HMH		 1922/*
1923 * ThinkPad firmware event model
1924 *
1925 * The ThinkPad firmware has two main event interfaces: normal ACPI
1926 * notifications (which follow the ACPI standard), and a private event
1927 * interface.
1928 *
1929 * The private event interface also issues events for the hotkeys. As
1930 * the driver gained features, the event handling code ended up being
1931 * built around the hotkey subdriver. This will need to be refactored
1932 * to a more formal event API eventually.
1933 *
1934 * Some "hotkeys" are actually supposed to be used as event reports,
1935 * such as "brightness has changed", "volume has changed", depending on
1936 * the ThinkPad model and how the firmware is operating.
1937 *
1938 * Unlike other classes, hotkey-class events have mask/unmask control on
1939 * non-ancient firmware. However, how it behaves changes a lot with the
1940 * firmware model and version.
1941 */
1942
f74a27d4
HMH		 1943enum { /* hot key scan codes (derived from ACPI DSDT) */
1944 TP_ACPI_HOTKEYSCAN_FNF1 = 0,
1945 TP_ACPI_HOTKEYSCAN_FNF2,
1946 TP_ACPI_HOTKEYSCAN_FNF3,
1947 TP_ACPI_HOTKEYSCAN_FNF4,
1948 TP_ACPI_HOTKEYSCAN_FNF5,
1949 TP_ACPI_HOTKEYSCAN_FNF6,
1950 TP_ACPI_HOTKEYSCAN_FNF7,
1951 TP_ACPI_HOTKEYSCAN_FNF8,
1952 TP_ACPI_HOTKEYSCAN_FNF9,
1953 TP_ACPI_HOTKEYSCAN_FNF10,
1954 TP_ACPI_HOTKEYSCAN_FNF11,
1955 TP_ACPI_HOTKEYSCAN_FNF12,
1956 TP_ACPI_HOTKEYSCAN_FNBACKSPACE,
1957 TP_ACPI_HOTKEYSCAN_FNINSERT,
1958 TP_ACPI_HOTKEYSCAN_FNDELETE,
1959 TP_ACPI_HOTKEYSCAN_FNHOME,
1960 TP_ACPI_HOTKEYSCAN_FNEND,
1961 TP_ACPI_HOTKEYSCAN_FNPAGEUP,
1962 TP_ACPI_HOTKEYSCAN_FNPAGEDOWN,
1963 TP_ACPI_HOTKEYSCAN_FNSPACE,
1964 TP_ACPI_HOTKEYSCAN_VOLUMEUP,
1965 TP_ACPI_HOTKEYSCAN_VOLUMEDOWN,
1966 TP_ACPI_HOTKEYSCAN_MUTE,
1967 TP_ACPI_HOTKEYSCAN_THINKPAD,
1968};
1969
0d922e3b 1970enum { /* Keys/events available through NVRAM polling */
01e88f25
HMH		 1971 TPACPI_HKEY_NVRAM_KNOWN_MASK = 0x00fb88c0U,
1972 TPACPI_HKEY_NVRAM_GOOD_MASK = 0x00fb8000U,
1973};
1974
1975enum { /* Positions of some of the keys in hotkey masks */
1976 TP_ACPI_HKEY_DISPSWTCH_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNF7,
1977 TP_ACPI_HKEY_DISPXPAND_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNF8,
1978 TP_ACPI_HKEY_HIBERNATE_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNF12,
1979 TP_ACPI_HKEY_BRGHTUP_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNHOME,
1980 TP_ACPI_HKEY_BRGHTDWN_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNEND,
1981 TP_ACPI_HKEY_THNKLGHT_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNPAGEUP,
1982 TP_ACPI_HKEY_ZOOM_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNSPACE,
1983 TP_ACPI_HKEY_VOLUP_MASK = 1 << TP_ACPI_HOTKEYSCAN_VOLUMEUP,
1984 TP_ACPI_HKEY_VOLDWN_MASK = 1 << TP_ACPI_HOTKEYSCAN_VOLUMEDOWN,
1985 TP_ACPI_HKEY_MUTE_MASK = 1 << TP_ACPI_HOTKEYSCAN_MUTE,
1986 TP_ACPI_HKEY_THINKPAD_MASK = 1 << TP_ACPI_HOTKEYSCAN_THINKPAD,
1987};
1988
1989enum { /* NVRAM to ACPI HKEY group map */
1990 TP_NVRAM_HKEY_GROUP_HK2 = TP_ACPI_HKEY_THINKPAD_MASK |
1991 TP_ACPI_HKEY_ZOOM_MASK |
1992 TP_ACPI_HKEY_DISPSWTCH_MASK |
1993 TP_ACPI_HKEY_HIBERNATE_MASK,
1994 TP_NVRAM_HKEY_GROUP_BRIGHTNESS = TP_ACPI_HKEY_BRGHTUP_MASK |
1995 TP_ACPI_HKEY_BRGHTDWN_MASK,
1996 TP_NVRAM_HKEY_GROUP_VOLUME = TP_ACPI_HKEY_VOLUP_MASK |
1997 TP_ACPI_HKEY_VOLDWN_MASK |
1998 TP_ACPI_HKEY_MUTE_MASK,
1999};
2000
2001#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
2002struct tp_nvram_state {
2003 u16 thinkpad_toggle:1;
2004 u16 zoom_toggle:1;
2005 u16 display_toggle:1;
2006 u16 thinklight_toggle:1;
2007 u16 hibernate_toggle:1;
2008 u16 displayexp_toggle:1;
2009 u16 display_state:1;
2010 u16 brightness_toggle:1;
2011 u16 volume_toggle:1;
2012 u16 mute:1;
2013
2014 u8 brightness_level;
2015 u8 volume_level;
2016};
2017
db25f16d 2018/* kthread for the hotkey poller */
01e88f25 2019static struct task_struct *tpacpi_hotkey_task;
db25f16d
HMH		 2020
2021/* Acquired while the poller kthread is running, use to sync start/stop */
01e88f25 2022static struct mutex hotkey_thread_mutex;
db25f16d
HMH		 2023
2024/*
0d922e3b
HMH		 2025 * Acquire mutex to write poller control variables as an
2026 * atomic block.
2027 *
2028 * Increment hotkey_config_change when changing them if you
2029 * want the kthread to forget old state.
db25f16d
HMH		 2030 *
2031 * See HOTKEY_CONFIG_CRITICAL_START/HOTKEY_CONFIG_CRITICAL_END
2032 */
01e88f25
HMH		 2033static struct mutex hotkey_thread_data_mutex;
2034static unsigned int hotkey_config_change;
2035
db25f16d
HMH		 2036/*
2037 * hotkey poller control variables
2038 *
2039 * Must be atomic or readers will also need to acquire mutex
0d922e3b
HMH		 2040 *
2041 * HOTKEY_CONFIG_CRITICAL_START/HOTKEY_CONFIG_CRITICAL_END
2042 * should be used only when the changes need to be taken as
2043 * a block, OR when one needs to force the kthread to forget
2044 * old state.
db25f16d
HMH		 2045 */
2046static u32 hotkey_source_mask; /* bit mask 0=ACPI,1=NVRAM */
2047static unsigned int hotkey_poll_freq = 10; /* Hz */
2048
2049#define HOTKEY_CONFIG_CRITICAL_START \
2050 do { \
2051 mutex_lock(&hotkey_thread_data_mutex); \
2052 hotkey_config_change++; \
2053 } while (0);
2054#define HOTKEY_CONFIG_CRITICAL_END \
2055 mutex_unlock(&hotkey_thread_data_mutex);
2056
01e88f25
HMH		 2057#else /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
2058
2059#define hotkey_source_mask 0U
db25f16d
HMH		 2060#define HOTKEY_CONFIG_CRITICAL_START
2061#define HOTKEY_CONFIG_CRITICAL_END
01e88f25
HMH		 2062
2063#endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
2064
f74a27d4
HMH		 2065static struct mutex hotkey_mutex;
2066
a713b4d7
HMH		 2067static enum { /* Reasons for waking up */
2068 TP_ACPI_WAKEUP_NONE = 0, /* None or unknown */
2069 TP_ACPI_WAKEUP_BAYEJ, /* Bay ejection request */
2070 TP_ACPI_WAKEUP_UNDOCK, /* Undock request */
2071} hotkey_wakeup_reason;
2072
2073static int hotkey_autosleep_ack;
2074
0d922e3b
HMH		 2075static u32 hotkey_orig_mask; /* events the BIOS had enabled */
2076static u32 hotkey_all_mask; /* all events supported in fw */
2077static u32 hotkey_reserved_mask; /* events better left disabled */
2078static u32 hotkey_driver_mask; /* events needed by the driver */
2079static u32 hotkey_user_mask; /* events visible to userspace */
2080static u32 hotkey_acpi_mask; /* events enabled in firmware */
6a38abbf 2081
b21a15f6
HMH		 2082static unsigned int hotkey_report_mode;
2083
edf0e0e5 2084static u16 *hotkey_keycode_map;
78f81cc4 2085
94954cc6 2086static struct attribute_set *hotkey_dev_attributes;
a0416420 2087
8b468c0c
HMH		 2088static void tpacpi_driver_event(const unsigned int hkey_event);
2089static void hotkey_driver_event(const unsigned int scancode);
2090
6c231bd5
HMH		 2091/* HKEY.MHKG() return bits */
2092#define TP_HOTKEY_TABLET_MASK (1 << 3)
2093
19d337df 2094static int hotkey_get_wlsw(void)
74941a69 2095{
19d337df
JB		 2096 int status;
2097
2098 if (!tp_features.hotkey_wlsw)
2099 return -ENODEV;
2100
a73f3091 2101#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
19d337df
JB		 2102 if (dbg_wlswemul)
2103 return (tpacpi_wlsw_emulstate) ?
2104 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF;
a73f3091 2105#endif
19d337df
JB		 2106
2107 if (!acpi_evalf(hkey_handle, &status, "WLSW", "d"))
74941a69 2108 return -EIO;
19d337df
JB		 2109
2110 return (status) ? TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF;
74941a69
HMH		 2111}
2112
6c231bd5
HMH		 2113static int hotkey_get_tablet_mode(int *status)
2114{
2115 int s;
2116
2117 if (!acpi_evalf(hkey_handle, &s, "MHKG", "d"))
2118 return -EIO;
2119
cee47f5a
HMH		 2120 *status = ((s & TP_HOTKEY_TABLET_MASK) != 0);
2121 return 0;
6c231bd5
HMH		 2122}
2123
b2c985e7 2124/*
0d922e3b
HMH		 2125 * Reads current event mask from firmware, and updates
2126 * hotkey_acpi_mask accordingly. Also resets any bits
2127 * from hotkey_user_mask that are unavailable to be
2128 * delivered (shadow requirement of the userspace ABI).
2129 *
b2c985e7
HMH		 2130 * Call with hotkey_mutex held
2131 */
2132static int hotkey_mask_get(void)
2133{
2134 if (tp_features.hotkey_mask) {
0d922e3b
HMH		 2135 u32 m = 0;
2136
01e88f25 2137 if (!acpi_evalf(hkey_handle, &m, "DHKN", "d"))
b2c985e7 2138 return -EIO;
0d922e3b
HMH		 2139
2140 hotkey_acpi_mask = m;
2141 } else {
2142 /* no mask support doesn't mean no event support... */
2143 hotkey_acpi_mask = hotkey_all_mask;
b2c985e7 2144 }
0d922e3b
HMH		 2145
2146 /* sync userspace-visible mask */
2147 hotkey_user_mask &= (hotkey_acpi_mask | hotkey_source_mask);
b2c985e7
HMH		 2148
2149 return 0;
2150}
2151
0d922e3b
HMH		 2152void static hotkey_mask_warn_incomplete_mask(void)
2153{
2154 /* log only what the user can fix... */
2155 const u32 wantedmask = hotkey_driver_mask &
2156 ~(hotkey_acpi_mask | hotkey_source_mask) &
2157 (hotkey_all_mask | TPACPI_HKEY_NVRAM_KNOWN_MASK);
2158
2159 if (wantedmask)
2160 printk(TPACPI_NOTICE
2161 "required events 0x%08x not enabled!\n",
2162 wantedmask);
2163}
2164
b2c985e7 2165/*
0d922e3b
HMH		 2166 * Set the firmware mask when supported
2167 *
2168 * Also calls hotkey_mask_get to update hotkey_acpi_mask.
2169 *
2170 * NOTE: does not set bits in hotkey_user_mask, but may reset them.
2171 *
b2c985e7
HMH		 2172 * Call with hotkey_mutex held
2173 */
2174static int hotkey_mask_set(u32 mask)
2175{
2176 int i;
2177 int rc = 0;
2178
0d922e3b 2179 const u32 fwmask = mask & ~hotkey_source_mask;
92889022 2180
0d922e3b 2181 if (tp_features.hotkey_mask) {
b2c985e7 2182 for (i = 0; i < 32; i++) {
b2c985e7
HMH		 2183 if (!acpi_evalf(hkey_handle,
2184 NULL, "MHKM", "vdd", i + 1,
0d922e3b 2185 !!(mask & (1 << i)))) {
b2c985e7
HMH		 2186 rc = -EIO;
2187 break;
b2c985e7
HMH		 2188 }
2189 }
0d922e3b 2190 }
b2c985e7 2191
0d922e3b
HMH		 2192 /*
2193 * We *must* make an inconditional call to hotkey_mask_get to
2194 * refresh hotkey_acpi_mask and update hotkey_user_mask
2195 *
2196 * Take the opportunity to also log when we cannot _enable_
2197 * a given event.
2198 */
2199 if (!hotkey_mask_get() && !rc && (fwmask & ~hotkey_acpi_mask)) {
2200 printk(TPACPI_NOTICE
2201 "asked for hotkey mask 0x%08x, but "
2202 "firmware forced it to 0x%08x\n",
2203 fwmask, hotkey_acpi_mask);
b2c985e7
HMH		 2204 }
2205
6b30eb7d
HMH		 2206 if (tpacpi_lifecycle != TPACPI_LIFE_EXITING)
2207 hotkey_mask_warn_incomplete_mask();
0d922e3b
HMH		 2208
2209 return rc;
2210}
2211
2212/*
2213 * Sets hotkey_user_mask and tries to set the firmware mask
2214 *
2215 * Call with hotkey_mutex held
2216 */
2217static int hotkey_user_mask_set(const u32 mask)
2218{
2219 int rc;
2220
2221 /* Give people a chance to notice they are doing something that
2222 * is bound to go boom on their users sooner or later */
2223 if (!tp_warned.hotkey_mask_ff &&
2224 (mask == 0xffff || mask == 0xffffff ||
2225 mask == 0xffffffff)) {
2226 tp_warned.hotkey_mask_ff = 1;
2227 printk(TPACPI_NOTICE
2228 "setting the hotkey mask to 0x%08x is likely "
2229 "not the best way to go about it\n", mask);
2230 printk(TPACPI_NOTICE
2231 "please consider using the driver defaults, "
2232 "and refer to up-to-date thinkpad-acpi "
2233 "documentation\n");
2234 }
2235
2236 /* Try to enable what the user asked for, plus whatever we need.
2237 * this syncs everything but won't enable bits in hotkey_user_mask */
2238 rc = hotkey_mask_set((mask | hotkey_driver_mask) & ~hotkey_source_mask);
2239
2240 /* Enable the available bits in hotkey_user_mask */
2241 hotkey_user_mask = mask & (hotkey_acpi_mask | hotkey_source_mask);
2242
b2c985e7
HMH		 2243 return rc;
2244}
2245
8b468c0c
HMH		 2246/*
2247 * Sets the driver hotkey mask.
2248 *
2249 * Can be called even if the hotkey subdriver is inactive
2250 */
2251static int tpacpi_hotkey_driver_mask_set(const u32 mask)
2252{
2253 int rc;
2254
2255 /* Do the right thing if hotkey_init has not been called yet */
2256 if (!tp_features.hotkey) {
2257 hotkey_driver_mask = mask;
2258 return 0;
2259 }
2260
2261 mutex_lock(&hotkey_mutex);
2262
2263 HOTKEY_CONFIG_CRITICAL_START
2264 hotkey_driver_mask = mask;
b684a363 2265#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
8b468c0c 2266 hotkey_source_mask |= (mask & ~hotkey_all_mask);
b684a363 2267#endif
8b468c0c
HMH		 2268 HOTKEY_CONFIG_CRITICAL_END
2269
2270 rc = hotkey_mask_set((hotkey_acpi_mask | hotkey_driver_mask) &
2271 ~hotkey_source_mask);
2272 mutex_unlock(&hotkey_mutex);
2273
2274 return rc;
2275}
2276
b2c985e7
HMH		 2277static int hotkey_status_get(int *status)
2278{
2279 if (!acpi_evalf(hkey_handle, status, "DHKC", "d"))
2280 return -EIO;
2281
2282 return 0;
2283}
2284
2586d566 2285static int hotkey_status_set(bool enable)
b2c985e7 2286{
2586d566 2287 if (!acpi_evalf(hkey_handle, NULL, "MHKC", "vd", enable ? 1 : 0))
b2c985e7
HMH		 2288 return -EIO;
2289
2290 return 0;
2291}
2292
6c231bd5 2293static void tpacpi_input_send_tabletsw(void)
b3ec6f91 2294{
6c231bd5 2295 int state;
b3ec6f91 2296
6c231bd5
HMH		 2297 if (tp_features.hotkey_tablet &&
2298 !hotkey_get_tablet_mode(&state)) {
2299 mutex_lock(&tpacpi_inputdev_send_mutex);
b3ec6f91 2300
6c231bd5
HMH		 2301 input_report_switch(tpacpi_inputdev,
2302 SW_TABLET_MODE, !!state);
2303 input_sync(tpacpi_inputdev);
2304
2305 mutex_unlock(&tpacpi_inputdev_send_mutex);
2306 }
b3ec6f91
HMH		 2307}
2308
0d922e3b
HMH		 2309/* Do NOT call without validating scancode first */
2310static void tpacpi_input_send_key(const unsigned int scancode)
b7c8c200 2311{
0d922e3b 2312 const unsigned int keycode = hotkey_keycode_map[scancode];
b7c8c200
HMH		 2313
2314 if (keycode != KEY_RESERVED) {
2315 mutex_lock(&tpacpi_inputdev_send_mutex);
2316
2317 input_report_key(tpacpi_inputdev, keycode, 1);
2318 if (keycode == KEY_UNKNOWN)
2319 input_event(tpacpi_inputdev, EV_MSC, MSC_SCAN,
2320 scancode);
2321 input_sync(tpacpi_inputdev);
2322
2323 input_report_key(tpacpi_inputdev, keycode, 0);
2324 if (keycode == KEY_UNKNOWN)
2325 input_event(tpacpi_inputdev, EV_MSC, MSC_SCAN,
2326 scancode);
2327 input_sync(tpacpi_inputdev);
2328
2329 mutex_unlock(&tpacpi_inputdev_send_mutex);
2330 }
2331}
2332
0d922e3b
HMH		 2333/* Do NOT call without validating scancode first */
2334static void tpacpi_input_send_key_masked(const unsigned int scancode)
2335{
8b468c0c 2336 hotkey_driver_event(scancode);
0d922e3b
HMH		 2337 if (hotkey_user_mask & (1 << scancode))
2338 tpacpi_input_send_key(scancode);
2339}
2340
01e88f25
HMH		 2341#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
2342static struct tp_acpi_drv_struct ibm_hotkey_acpidriver;
2343
0d922e3b 2344/* Do NOT call without validating scancode first */
01e88f25
HMH		 2345static void tpacpi_hotkey_send_key(unsigned int scancode)
2346{
0d922e3b 2347 tpacpi_input_send_key_masked(scancode);
01e88f25
HMH		 2348 if (hotkey_report_mode < 2) {
2349 acpi_bus_generate_proc_event(ibm_hotkey_acpidriver.device,
67bcae6e 2350 0x80, TP_HKEY_EV_HOTKEY_BASE + scancode);
01e88f25
HMH		 2351 }
2352}
2353
0d922e3b 2354static void hotkey_read_nvram(struct tp_nvram_state *n, const u32 m)
01e88f25
HMH		 2355{
2356 u8 d;
2357
2358 if (m & TP_NVRAM_HKEY_GROUP_HK2) {
2359 d = nvram_read_byte(TP_NVRAM_ADDR_HK2);
2360 n->thinkpad_toggle = !!(d & TP_NVRAM_MASK_HKT_THINKPAD);
2361 n->zoom_toggle = !!(d & TP_NVRAM_MASK_HKT_ZOOM);
2362 n->display_toggle = !!(d & TP_NVRAM_MASK_HKT_DISPLAY);
2363 n->hibernate_toggle = !!(d & TP_NVRAM_MASK_HKT_HIBERNATE);
2364 }
2365 if (m & TP_ACPI_HKEY_THNKLGHT_MASK) {
2366 d = nvram_read_byte(TP_NVRAM_ADDR_THINKLIGHT);
2367 n->thinklight_toggle = !!(d & TP_NVRAM_MASK_THINKLIGHT);
2368 }
2369 if (m & TP_ACPI_HKEY_DISPXPAND_MASK) {
2370 d = nvram_read_byte(TP_NVRAM_ADDR_VIDEO);
2371 n->displayexp_toggle =
2372 !!(d & TP_NVRAM_MASK_HKT_DISPEXPND);
2373 }
2374 if (m & TP_NVRAM_HKEY_GROUP_BRIGHTNESS) {
2375 d = nvram_read_byte(TP_NVRAM_ADDR_BRIGHTNESS);
2376 n->brightness_level = (d & TP_NVRAM_MASK_LEVEL_BRIGHTNESS)
2377 >> TP_NVRAM_POS_LEVEL_BRIGHTNESS;
2378 n->brightness_toggle =
2379 !!(d & TP_NVRAM_MASK_HKT_BRIGHTNESS);
2380 }
2381 if (m & TP_NVRAM_HKEY_GROUP_VOLUME) {
2382 d = nvram_read_byte(TP_NVRAM_ADDR_MIXER);
2383 n->volume_level = (d & TP_NVRAM_MASK_LEVEL_VOLUME)
2384 >> TP_NVRAM_POS_LEVEL_VOLUME;
2385 n->mute = !!(d & TP_NVRAM_MASK_MUTE);
2386 n->volume_toggle = !!(d & TP_NVRAM_MASK_HKT_VOLUME);
2387 }
2388}
2389
0d922e3b
HMH		 2390static void hotkey_compare_and_issue_event(struct tp_nvram_state *oldn,
2391 struct tp_nvram_state *newn,
2392 const u32 event_mask)
2393{
2394
01e88f25 2395#define TPACPI_COMPARE_KEY(__scancode, __member) \
35ff8b9f 2396 do { \
0d922e3b 2397 if ((event_mask & (1 << __scancode)) && \
35ff8b9f 2398 oldn->__member != newn->__member) \
0d922e3b 2399 tpacpi_hotkey_send_key(__scancode); \
35ff8b9f 2400 } while (0)
01e88f25
HMH		 2401
2402#define TPACPI_MAY_SEND_KEY(__scancode) \
0d922e3b
HMH		 2403 do { \
2404 if (event_mask & (1 << __scancode)) \
2405 tpacpi_hotkey_send_key(__scancode); \
2406 } while (0)
01e88f25 2407
01e88f25
HMH		 2408 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_THINKPAD, thinkpad_toggle);
2409 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNSPACE, zoom_toggle);
2410 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNF7, display_toggle);
2411 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNF12, hibernate_toggle);
2412
2413 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNPAGEUP, thinklight_toggle);
2414
2415 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNF8, displayexp_toggle);
2416
2417 /* handle volume */
2418 if (oldn->volume_toggle != newn->volume_toggle) {
2419 if (oldn->mute != newn->mute) {
2420 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_MUTE);
2421 }
2422 if (oldn->volume_level > newn->volume_level) {
2423 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEDOWN);
2424 } else if (oldn->volume_level < newn->volume_level) {
2425 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEUP);
2426 } else if (oldn->mute == newn->mute) {
2427 /* repeated key presses that didn't change state */
2428 if (newn->mute) {
2429 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_MUTE);
2430 } else if (newn->volume_level != 0) {
2431 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEUP);
2432 } else {
2433 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEDOWN);
2434 }
2435 }
2436 }
2437
2438 /* handle brightness */
2439 if (oldn->brightness_toggle != newn->brightness_toggle) {
2440 if (oldn->brightness_level < newn->brightness_level) {
2441 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNHOME);
2442 } else if (oldn->brightness_level > newn->brightness_level) {
2443 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNEND);
2444 } else {
2445 /* repeated key presses that didn't change state */
2446 if (newn->brightness_level != 0) {
2447 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNHOME);
2448 } else {
2449 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNEND);
2450 }
2451 }
2452 }
01e88f25
HMH		 2453
2454#undef TPACPI_COMPARE_KEY
2455#undef TPACPI_MAY_SEND_KEY
0d922e3b 2456}
01e88f25 2457
0d922e3b
HMH		 2458/*
2459 * Polling driver
2460 *
2461 * We track all events in hotkey_source_mask all the time, since
2462 * most of them are edge-based. We only issue those requested by
2463 * hotkey_user_mask or hotkey_driver_mask, though.
2464 */
01e88f25
HMH		 2465static int hotkey_kthread(void *data)
2466{
2467 struct tp_nvram_state s[2];
0d922e3b 2468 u32 poll_mask, event_mask;
01e88f25
HMH		 2469 unsigned int si, so;
2470 unsigned long t;
2471 unsigned int change_detector, must_reset;
db25f16d 2472 unsigned int poll_freq;
01e88f25
HMH		 2473
2474 mutex_lock(&hotkey_thread_mutex);
2475
2476 if (tpacpi_lifecycle == TPACPI_LIFE_EXITING)
2477 goto exit;
2478
2479 set_freezable();
2480
2481 so = 0;
2482 si = 1;
2483 t = 0;
2484
2485 /* Initial state for compares */
2486 mutex_lock(&hotkey_thread_data_mutex);
2487 change_detector = hotkey_config_change;
0d922e3b
HMH		 2488 poll_mask = hotkey_source_mask;
2489 event_mask = hotkey_source_mask &
2490 (hotkey_driver_mask | hotkey_user_mask);
db25f16d 2491 poll_freq = hotkey_poll_freq;
01e88f25 2492 mutex_unlock(&hotkey_thread_data_mutex);
0d922e3b 2493 hotkey_read_nvram(&s[so], poll_mask);
01e88f25 2494
db25f16d
HMH		 2495 while (!kthread_should_stop()) {
2496 if (t == 0) {
2497 if (likely(poll_freq))
2498 t = 1000/poll_freq;
2499 else
2500 t = 100; /* should never happen... */
2501 }
01e88f25
HMH		 2502 t = msleep_interruptible(t);
2503 if (unlikely(kthread_should_stop()))
2504 break;
2505 must_reset = try_to_freeze();
2506 if (t > 0 && !must_reset)
2507 continue;
2508
2509 mutex_lock(&hotkey_thread_data_mutex);
2510 if (must_reset || hotkey_config_change != change_detector) {
2511 /* forget old state on thaw or config change */
2512 si = so;
2513 t = 0;
2514 change_detector = hotkey_config_change;
2515 }
0d922e3b
HMH		 2516 poll_mask = hotkey_source_mask;
2517 event_mask = hotkey_source_mask &
2518 (hotkey_driver_mask | hotkey_user_mask);
db25f16d 2519 poll_freq = hotkey_poll_freq;
01e88f25
HMH		 2520 mutex_unlock(&hotkey_thread_data_mutex);
2521
0d922e3b
HMH		 2522 if (likely(poll_mask)) {
2523 hotkey_read_nvram(&s[si], poll_mask);
01e88f25
HMH		 2524 if (likely(si != so)) {
2525 hotkey_compare_and_issue_event(&s[so], &s[si],
0d922e3b 2526 event_mask);
01e88f25
HMH		 2527 }
2528 }
2529
2530 so = si;
2531 si ^= 1;
2532 }
2533
2534exit:
2535 mutex_unlock(&hotkey_thread_mutex);
2536 return 0;
2537}
2538
db25f16d 2539/* call with hotkey_mutex held */
01e88f25
HMH		 2540static void hotkey_poll_stop_sync(void)
2541{
2542 if (tpacpi_hotkey_task) {
2543 if (frozen(tpacpi_hotkey_task) ||
2544 freezing(tpacpi_hotkey_task))
2545 thaw_process(tpacpi_hotkey_task);
2546
2547 kthread_stop(tpacpi_hotkey_task);
2548 tpacpi_hotkey_task = NULL;
2549 mutex_lock(&hotkey_thread_mutex);
2550 /* at this point, the thread did exit */
2551 mutex_unlock(&hotkey_thread_mutex);
2552 }
2553}
2554
2555/* call with hotkey_mutex held */
db25f16d 2556static void hotkey_poll_setup(bool may_warn)
01e88f25 2557{
0d922e3b
HMH		 2558 const u32 poll_driver_mask = hotkey_driver_mask & hotkey_source_mask;
2559 const u32 poll_user_mask = hotkey_user_mask & hotkey_source_mask;
db25f16d 2560
0d922e3b
HMH		 2561 if (hotkey_poll_freq > 0 &&
2562 (poll_driver_mask ||
2563 (poll_user_mask && tpacpi_inputdev->users > 0))) {
01e88f25
HMH		 2564 if (!tpacpi_hotkey_task) {
2565 tpacpi_hotkey_task = kthread_run(hotkey_kthread,
95e57ab2 2566 NULL, TPACPI_NVRAM_KTHREAD_NAME);
01e88f25
HMH		 2567 if (IS_ERR(tpacpi_hotkey_task)) {
2568 tpacpi_hotkey_task = NULL;
35ff8b9f
HMH		 2569 printk(TPACPI_ERR
2570 "could not create kernel thread "
01e88f25
HMH		 2571 "for hotkey polling\n");
2572 }
2573 }
2574 } else {
2575 hotkey_poll_stop_sync();
0d922e3b 2576 if (may_warn && (poll_driver_mask || poll_user_mask) &&
db25f16d 2577 hotkey_poll_freq == 0) {
35ff8b9f 2578 printk(TPACPI_NOTICE
0d922e3b
HMH		 2579 "hot keys 0x%08x and/or events 0x%08x "
2580 "require polling, which is currently "
2581 "disabled\n",
2582 poll_user_mask, poll_driver_mask);
01e88f25
HMH		 2583 }
2584 }
2585}
2586
db25f16d 2587static void hotkey_poll_setup_safe(bool may_warn)
01e88f25
HMH		 2588{
2589 mutex_lock(&hotkey_mutex);
2590 hotkey_poll_setup(may_warn);
2591 mutex_unlock(&hotkey_mutex);
2592}
2593
db25f16d
HMH		 2594/* call with hotkey_mutex held */
2595static void hotkey_poll_set_freq(unsigned int freq)
2596{
2597 if (!freq)
2598 hotkey_poll_stop_sync();
2599
db25f16d 2600 hotkey_poll_freq = freq;
db25f16d
HMH		 2601}
2602
1bc6b9cd
HMH		 2603#else /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
2604
db25f16d 2605static void hotkey_poll_setup_safe(bool __unused)
1bc6b9cd
HMH		 2606{
2607}
2608
2609#endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
2610
01e88f25
HMH		 2611static int hotkey_inputdev_open(struct input_dev *dev)
2612{
2613 switch (tpacpi_lifecycle) {
2614 case TPACPI_LIFE_INIT:
2615 /*
2616 * hotkey_init will call hotkey_poll_setup_safe
2617 * at the appropriate moment
2618 */
2619 return 0;
2620 case TPACPI_LIFE_EXITING:
2621 return -EBUSY;
2622 case TPACPI_LIFE_RUNNING:
db25f16d 2623 hotkey_poll_setup_safe(false);
01e88f25
HMH		 2624 return 0;
2625 }
2626
2627 /* Should only happen if tpacpi_lifecycle is corrupt */
2628 BUG();
2629 return -EBUSY;
2630}
2631
2632static void hotkey_inputdev_close(struct input_dev *dev)
2633{
2634 /* disable hotkey polling when possible */
0d922e3b
HMH		 2635 if (tpacpi_lifecycle == TPACPI_LIFE_RUNNING &&
2636 !(hotkey_source_mask & hotkey_driver_mask))
db25f16d 2637 hotkey_poll_setup_safe(false);
01e88f25 2638}
01e88f25 2639
a0416420
HMH		 2640/* sysfs hotkey enable ------------------------------------------------- */
2641static ssize_t hotkey_enable_show(struct device *dev,
2642 struct device_attribute *attr,
2643 char *buf)
2644{
ae92bd17 2645 int res, status;
a0416420 2646
2586d566
HMH		 2647 printk_deprecated_attribute("hotkey_enable",
2648 "Hotkey reporting is always enabled");
2649
b2c985e7 2650 res = hotkey_status_get(&status);
a0416420
HMH		 2651 if (res)
2652 return res;
2653
2654 return snprintf(buf, PAGE_SIZE, "%d\n", status);
2655}
2656
2657static ssize_t hotkey_enable_store(struct device *dev,
2658 struct device_attribute *attr,
2659 const char *buf, size_t count)
2660{
2661 unsigned long t;
2586d566
HMH		 2662
2663 printk_deprecated_attribute("hotkey_enable",
2664 "Hotkeys can be disabled through hotkey_mask");
a0416420
HMH		 2665
2666 if (parse_strtoul(buf, 1, &t))
2667 return -EINVAL;
2668
2586d566
HMH		 2669 if (t == 0)
2670 return -EPERM;
a0416420 2671
2586d566 2672 return count;
a0416420
HMH		 2673}
2674
2675static struct device_attribute dev_attr_hotkey_enable =
cc4c24e1 2676 __ATTR(hotkey_enable, S_IWUSR | S_IRUGO,
a0416420
HMH		 2677 hotkey_enable_show, hotkey_enable_store);
2678
2679/* sysfs hotkey mask --------------------------------------------------- */
2680static ssize_t hotkey_mask_show(struct device *dev,
2681 struct device_attribute *attr,
2682 char *buf)
2683{
0d922e3b 2684 return snprintf(buf, PAGE_SIZE, "0x%08x\n", hotkey_user_mask);
a0416420
HMH		 2685}
2686
2687static ssize_t hotkey_mask_store(struct device *dev,
2688 struct device_attribute *attr,
2689 const char *buf, size_t count)
2690{
2691 unsigned long t;
b2c985e7 2692 int res;
a0416420 2693
ae92bd17 2694 if (parse_strtoul(buf, 0xffffffffUL, &t))
a0416420
HMH		 2695 return -EINVAL;
2696
7646ea88 2697 if (mutex_lock_killable(&hotkey_mutex))
b2c985e7
HMH		 2698 return -ERESTARTSYS;
2699
0d922e3b 2700 res = hotkey_user_mask_set(t);
01e88f25
HMH		 2701
2702#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
db25f16d 2703 hotkey_poll_setup(true);
01e88f25
HMH		 2704#endif
2705
b2c985e7 2706 mutex_unlock(&hotkey_mutex);
a0416420 2707
56e2c200
HMH		 2708 tpacpi_disclose_usertask("hotkey_mask", "set to 0x%08lx\n", t);
2709
a0416420
HMH		 2710 return (res) ? res : count;
2711}
2712
2713static struct device_attribute dev_attr_hotkey_mask =
cc4c24e1 2714 __ATTR(hotkey_mask, S_IWUSR | S_IRUGO,
a0416420
HMH		 2715 hotkey_mask_show, hotkey_mask_store);
2716
2717/* sysfs hotkey bios_enabled ------------------------------------------- */
2718static ssize_t hotkey_bios_enabled_show(struct device *dev,
2719 struct device_attribute *attr,
2720 char *buf)
2721{
2586d566 2722 return sprintf(buf, "0\n");
a0416420
HMH		 2723}
2724
2725static struct device_attribute dev_attr_hotkey_bios_enabled =
cc4c24e1 2726 __ATTR(hotkey_bios_enabled, S_IRUGO, hotkey_bios_enabled_show, NULL);
a0416420
HMH		 2727
2728/* sysfs hotkey bios_mask ---------------------------------------------- */
2729static ssize_t hotkey_bios_mask_show(struct device *dev,
2730 struct device_attribute *attr,
2731 char *buf)
2732{
06777be6
HMH		 2733 printk_deprecated_attribute("hotkey_bios_mask",
2734 "This attribute is useless.");
ae92bd17 2735 return snprintf(buf, PAGE_SIZE, "0x%08x\n", hotkey_orig_mask);
a0416420
HMH		 2736}
2737
2738static struct device_attribute dev_attr_hotkey_bios_mask =
cc4c24e1 2739 __ATTR(hotkey_bios_mask, S_IRUGO, hotkey_bios_mask_show, NULL);
a0416420 2740
9b010de5
HMH		 2741/* sysfs hotkey all_mask ----------------------------------------------- */
2742static ssize_t hotkey_all_mask_show(struct device *dev,
2743 struct device_attribute *attr,
2744 char *buf)
2745{
01e88f25
HMH		 2746 return snprintf(buf, PAGE_SIZE, "0x%08x\n",
2747 hotkey_all_mask | hotkey_source_mask);
9b010de5
HMH		 2748}
2749
2750static struct device_attribute dev_attr_hotkey_all_mask =
2751 __ATTR(hotkey_all_mask, S_IRUGO, hotkey_all_mask_show, NULL);
2752
2753/* sysfs hotkey recommended_mask --------------------------------------- */
2754static ssize_t hotkey_recommended_mask_show(struct device *dev,
2755 struct device_attribute *attr,
2756 char *buf)
2757{
2758 return snprintf(buf, PAGE_SIZE, "0x%08x\n",
01e88f25
HMH		 2759 (hotkey_all_mask | hotkey_source_mask)
2760 & ~hotkey_reserved_mask);
9b010de5
HMH		 2761}
2762
2763static struct device_attribute dev_attr_hotkey_recommended_mask =
2764 __ATTR(hotkey_recommended_mask, S_IRUGO,
2765 hotkey_recommended_mask_show, NULL);
2766
01e88f25
HMH		 2767#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
2768
2769/* sysfs hotkey hotkey_source_mask ------------------------------------- */
2770static ssize_t hotkey_source_mask_show(struct device *dev,
2771 struct device_attribute *attr,
2772 char *buf)
2773{
2774 return snprintf(buf, PAGE_SIZE, "0x%08x\n", hotkey_source_mask);
2775}
2776
2777static ssize_t hotkey_source_mask_store(struct device *dev,
2778 struct device_attribute *attr,
2779 const char *buf, size_t count)
2780{
2781 unsigned long t;
0d922e3b
HMH		 2782 u32 r_ev;
2783 int rc;
01e88f25
HMH		 2784
2785 if (parse_strtoul(buf, 0xffffffffUL, &t) ||
2786 ((t & ~TPACPI_HKEY_NVRAM_KNOWN_MASK) != 0))
2787 return -EINVAL;
2788
7646ea88 2789 if (mutex_lock_killable(&hotkey_mutex))
01e88f25
HMH		 2790 return -ERESTARTSYS;
2791
2792 HOTKEY_CONFIG_CRITICAL_START
2793 hotkey_source_mask = t;
2794 HOTKEY_CONFIG_CRITICAL_END
2795
0d922e3b
HMH		 2796 rc = hotkey_mask_set((hotkey_user_mask | hotkey_driver_mask) &
2797 ~hotkey_source_mask);
db25f16d 2798 hotkey_poll_setup(true);
0d922e3b
HMH		 2799
2800 /* check if events needed by the driver got disabled */
2801 r_ev = hotkey_driver_mask & ~(hotkey_acpi_mask & hotkey_all_mask)
2802 & ~hotkey_source_mask & TPACPI_HKEY_NVRAM_KNOWN_MASK;
01e88f25
HMH		 2803
2804 mutex_unlock(&hotkey_mutex);
2805
0d922e3b
HMH		 2806 if (rc < 0)
2807 printk(TPACPI_ERR "hotkey_source_mask: failed to update the"
2808 "firmware event mask!\n");
2809
2810 if (r_ev)
2811 printk(TPACPI_NOTICE "hotkey_source_mask: "
2812 "some important events were disabled: "
2813 "0x%04x\n", r_ev);
2814
56e2c200
HMH		 2815 tpacpi_disclose_usertask("hotkey_source_mask", "set to 0x%08lx\n", t);
2816
0d922e3b 2817 return (rc < 0) ? rc : count;
01e88f25
HMH		 2818}
2819
2820static struct device_attribute dev_attr_hotkey_source_mask =
2821 __ATTR(hotkey_source_mask, S_IWUSR | S_IRUGO,
2822 hotkey_source_mask_show, hotkey_source_mask_store);
2823
2824/* sysfs hotkey hotkey_poll_freq --------------------------------------- */
2825static ssize_t hotkey_poll_freq_show(struct device *dev,
2826 struct device_attribute *attr,
2827 char *buf)
2828{
2829 return snprintf(buf, PAGE_SIZE, "%d\n", hotkey_poll_freq);
2830}
2831
2832static ssize_t hotkey_poll_freq_store(struct device *dev,
2833 struct device_attribute *attr,
2834 const char *buf, size_t count)
2835{
2836 unsigned long t;
2837
2838 if (parse_strtoul(buf, 25, &t))
2839 return -EINVAL;
2840
7646ea88 2841 if (mutex_lock_killable(&hotkey_mutex))
01e88f25
HMH		 2842 return -ERESTARTSYS;
2843
db25f16d
HMH		 2844 hotkey_poll_set_freq(t);
2845 hotkey_poll_setup(true);
01e88f25 2846
01e88f25
HMH		 2847 mutex_unlock(&hotkey_mutex);
2848
56e2c200
HMH		 2849 tpacpi_disclose_usertask("hotkey_poll_freq", "set to %lu\n", t);
2850
01e88f25
HMH		 2851 return count;
2852}
2853
2854static struct device_attribute dev_attr_hotkey_poll_freq =
2855 __ATTR(hotkey_poll_freq, S_IWUSR | S_IRUGO,
2856 hotkey_poll_freq_show, hotkey_poll_freq_store);
2857
2858#endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
2859
50ebec09 2860/* sysfs hotkey radio_sw (pollable) ------------------------------------ */
74941a69
HMH		 2861static ssize_t hotkey_radio_sw_show(struct device *dev,
2862 struct device_attribute *attr,
2863 char *buf)
2864{
19d337df
JB		 2865 int res;
2866 res = hotkey_get_wlsw();
74941a69
HMH		 2867 if (res < 0)
2868 return res;
2869
19d337df
JB		 2870 /* Opportunistic update */
2871 tpacpi_rfk_update_hwblock_state((res == TPACPI_RFK_RADIO_OFF));
2872
2873 return snprintf(buf, PAGE_SIZE, "%d\n",
2874 (res == TPACPI_RFK_RADIO_OFF) ? 0 : 1);
74941a69
HMH		 2875}
2876
2877static struct device_attribute dev_attr_hotkey_radio_sw =
2878 __ATTR(hotkey_radio_sw, S_IRUGO, hotkey_radio_sw_show, NULL);
2879
50ebec09
HMH		 2880static void hotkey_radio_sw_notify_change(void)
2881{
2882 if (tp_features.hotkey_wlsw)
2883 sysfs_notify(&tpacpi_pdev->dev.kobj, NULL,
2884 "hotkey_radio_sw");
2885}
2886
6c231bd5
HMH		 2887/* sysfs hotkey tablet mode (pollable) --------------------------------- */
2888static ssize_t hotkey_tablet_mode_show(struct device *dev,
2889 struct device_attribute *attr,
2890 char *buf)
2891{
2892 int res, s;
2893 res = hotkey_get_tablet_mode(&s);
2894 if (res < 0)
2895 return res;
2896
2897 return snprintf(buf, PAGE_SIZE, "%d\n", !!s);
2898}
2899
2900static struct device_attribute dev_attr_hotkey_tablet_mode =
2901 __ATTR(hotkey_tablet_mode, S_IRUGO, hotkey_tablet_mode_show, NULL);
2902
2903static void hotkey_tablet_mode_notify_change(void)
2904{
2905 if (tp_features.hotkey_tablet)
2906 sysfs_notify(&tpacpi_pdev->dev.kobj, NULL,
2907 "hotkey_tablet_mode");
2908}
2909
ff80f137
HMH		 2910/* sysfs hotkey report_mode -------------------------------------------- */
2911static ssize_t hotkey_report_mode_show(struct device *dev,
2912 struct device_attribute *attr,
2913 char *buf)
2914{
2915 return snprintf(buf, PAGE_SIZE, "%d\n",
2916 (hotkey_report_mode != 0) ? hotkey_report_mode : 1);
2917}
2918
2919static struct device_attribute dev_attr_hotkey_report_mode =
2920 __ATTR(hotkey_report_mode, S_IRUGO, hotkey_report_mode_show, NULL);
2921
50ebec09 2922/* sysfs wakeup reason (pollable) -------------------------------------- */
a713b4d7
HMH		 2923static ssize_t hotkey_wakeup_reason_show(struct device *dev,
2924 struct device_attribute *attr,
2925 char *buf)
2926{
2927 return snprintf(buf, PAGE_SIZE, "%d\n", hotkey_wakeup_reason);
2928}
2929
2930static struct device_attribute dev_attr_hotkey_wakeup_reason =
2931 __ATTR(wakeup_reason, S_IRUGO, hotkey_wakeup_reason_show, NULL);
2932
1d5a2b54 2933static void hotkey_wakeup_reason_notify_change(void)
50ebec09 2934{
0d922e3b
HMH		 2935 sysfs_notify(&tpacpi_pdev->dev.kobj, NULL,
2936 "wakeup_reason");
50ebec09
HMH		 2937}
2938
2939/* sysfs wakeup hotunplug_complete (pollable) -------------------------- */
a713b4d7
HMH		 2940static ssize_t hotkey_wakeup_hotunplug_complete_show(struct device *dev,
2941 struct device_attribute *attr,
2942 char *buf)
2943{
2944 return snprintf(buf, PAGE_SIZE, "%d\n", hotkey_autosleep_ack);
2945}
2946
2947static struct device_attribute dev_attr_hotkey_wakeup_hotunplug_complete =
2948 __ATTR(wakeup_hotunplug_complete, S_IRUGO,
2949 hotkey_wakeup_hotunplug_complete_show, NULL);
2950
1d5a2b54 2951static void hotkey_wakeup_hotunplug_complete_notify_change(void)
50ebec09 2952{
0d922e3b
HMH		 2953 sysfs_notify(&tpacpi_pdev->dev.kobj, NULL,
2954 "wakeup_hotunplug_complete");
50ebec09
HMH		 2955}
2956
a0416420
HMH		 2957/* --------------------------------------------------------------------- */
2958
ff80f137
HMH		 2959static struct attribute *hotkey_attributes[] __initdata = {
2960 &dev_attr_hotkey_enable.attr,
01e88f25 2961 &dev_attr_hotkey_bios_enabled.attr,
0d922e3b 2962 &dev_attr_hotkey_bios_mask.attr,
ff80f137 2963 &dev_attr_hotkey_report_mode.attr,
0d922e3b
HMH		 2964 &dev_attr_hotkey_wakeup_reason.attr,
2965 &dev_attr_hotkey_wakeup_hotunplug_complete.attr,
01e88f25
HMH		 2966 &dev_attr_hotkey_mask.attr,
2967 &dev_attr_hotkey_all_mask.attr,
2968 &dev_attr_hotkey_recommended_mask.attr,
0d922e3b 2969#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
01e88f25
HMH		 2970 &dev_attr_hotkey_source_mask.attr,
2971 &dev_attr_hotkey_poll_freq.attr,
2972#endif
ff80f137
HMH		 2973};
2974
19d337df
JB		 2975/*
2976 * Sync both the hw and sw blocking state of all switches
2977 */
733e27c1
HMH		 2978static void tpacpi_send_radiosw_update(void)
2979{
2980 int wlsw;
2981
19d337df
JB		 2982 /*
2983 * We must sync all rfkill controllers *before* issuing any
2984 * rfkill input events, or we will race the rfkill core input
2985 * handler.
2986 *
2987 * tpacpi_inputdev_send_mutex works as a syncronization point
2988 * for the above.
2989 *
2990 * We optimize to avoid numerous calls to hotkey_get_wlsw.
2991 */
2992
2993 wlsw = hotkey_get_wlsw();
2994
2995 /* Sync hw blocking state first if it is hw-blocked */
2996 if (wlsw == TPACPI_RFK_RADIO_OFF)
2997 tpacpi_rfk_update_hwblock_state(true);
0e74dc26 2998
19d337df
JB		 2999 /* Sync sw blocking state */
3000 tpacpi_rfk_update_swstate_all();
3001
3002 /* Sync hw blocking state last if it is hw-unblocked */
3003 if (wlsw == TPACPI_RFK_RADIO_ON)
3004 tpacpi_rfk_update_hwblock_state(false);
3005
3006 /* Issue rfkill input event for WLSW switch */
3007 if (!(wlsw < 0)) {
733e27c1
HMH		 3008 mutex_lock(&tpacpi_inputdev_send_mutex);
3009
3010 input_report_switch(tpacpi_inputdev,
19d337df 3011 SW_RFKILL_ALL, (wlsw > 0));
733e27c1
HMH		 3012 input_sync(tpacpi_inputdev);
3013
3014 mutex_unlock(&tpacpi_inputdev_send_mutex);
3015 }
19d337df
JB		 3016
3017 /*
3018 * this can be unconditional, as we will poll state again
3019 * if userspace uses the notify to read data
3020 */
733e27c1
HMH		 3021 hotkey_radio_sw_notify_change();
3022}
3023
9c0a76e1
HMH		 3024static void hotkey_exit(void)
3025{
3026#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
db25f16d 3027 mutex_lock(&hotkey_mutex);
9c0a76e1 3028 hotkey_poll_stop_sync();
db25f16d 3029 mutex_unlock(&hotkey_mutex);
9c0a76e1
HMH		 3030#endif
3031
3032 if (hotkey_dev_attributes)
3033 delete_attr_set(hotkey_dev_attributes, &tpacpi_pdev->dev.kobj);
3034
3035 kfree(hotkey_keycode_map);
3036
4be73005 3037 dbg_printk(TPACPI_DBG_EXIT | TPACPI_DBG_HKEY,
0d922e3b
HMH		 3038 "restoring original HKEY status and mask\n");
3039 /* yes, there is a bitwise or below, we want the
3040 * functions to be called even if one of them fail */
3041 if (((tp_features.hotkey_mask &&
3042 hotkey_mask_set(hotkey_orig_mask)) |
3043 hotkey_status_set(false)) != 0)
4be73005
HMH		 3044 printk(TPACPI_ERR
3045 "failed to restore hot key mask "
3046 "to BIOS defaults\n");
9c0a76e1
HMH		 3047}
3048
de4c8cc7
HMH		 3049static void __init hotkey_unmap(const unsigned int scancode)
3050{
3051 if (hotkey_keycode_map[scancode] != KEY_RESERVED) {
3052 clear_bit(hotkey_keycode_map[scancode],
3053 tpacpi_inputdev->keybit);
3054 hotkey_keycode_map[scancode] = KEY_RESERVED;
3055 }
3056}
3057
0d922e3b
HMH		 3058/*
3059 * HKEY quirks:
3060 * TPACPI_HK_Q_INIMASK: Supports FN+F3,FN+F4,FN+F12
3061 */
3062
3063#define TPACPI_HK_Q_INIMASK 0x0001
3064
3065static const struct tpacpi_quirk tpacpi_hotkey_qtable[] __initconst = {
3066 TPACPI_Q_IBM('I', 'H', TPACPI_HK_Q_INIMASK), /* 600E */
3067 TPACPI_Q_IBM('I', 'N', TPACPI_HK_Q_INIMASK), /* 600E */
3068 TPACPI_Q_IBM('I', 'D', TPACPI_HK_Q_INIMASK), /* 770, 770E, 770ED */
3069 TPACPI_Q_IBM('I', 'W', TPACPI_HK_Q_INIMASK), /* A20m */
3070 TPACPI_Q_IBM('I', 'V', TPACPI_HK_Q_INIMASK), /* A20p */
3071 TPACPI_Q_IBM('1', '0', TPACPI_HK_Q_INIMASK), /* A21e, A22e */
3072 TPACPI_Q_IBM('K', 'U', TPACPI_HK_Q_INIMASK), /* A21e */
3073 TPACPI_Q_IBM('K', 'X', TPACPI_HK_Q_INIMASK), /* A21m, A22m */
3074 TPACPI_Q_IBM('K', 'Y', TPACPI_HK_Q_INIMASK), /* A21p, A22p */
3075 TPACPI_Q_IBM('1', 'B', TPACPI_HK_Q_INIMASK), /* A22e */
3076 TPACPI_Q_IBM('1', '3', TPACPI_HK_Q_INIMASK), /* A22m */
3077 TPACPI_Q_IBM('1', 'E', TPACPI_HK_Q_INIMASK), /* A30/p (0) */
3078 TPACPI_Q_IBM('1', 'C', TPACPI_HK_Q_INIMASK), /* R30 */
3079 TPACPI_Q_IBM('1', 'F', TPACPI_HK_Q_INIMASK), /* R31 */
3080 TPACPI_Q_IBM('I', 'Y', TPACPI_HK_Q_INIMASK), /* T20 */
3081 TPACPI_Q_IBM('K', 'Z', TPACPI_HK_Q_INIMASK), /* T21 */
3082 TPACPI_Q_IBM('1', '6', TPACPI_HK_Q_INIMASK), /* T22 */
3083 TPACPI_Q_IBM('I', 'Z', TPACPI_HK_Q_INIMASK), /* X20, X21 */
3084 TPACPI_Q_IBM('1', 'D', TPACPI_HK_Q_INIMASK), /* X22, X23, X24 */
3085};
3086
a5763f22 3087static int __init hotkey_init(struct ibm_init_struct *iibm)
56b6aeb0 3088{
0f089147
HMH		 3089 /* Requirements for changing the default keymaps:
3090 *
3091 * 1. Many of the keys are mapped to KEY_RESERVED for very
3092 * good reasons. Do not change them unless you have deep
3093 * knowledge on the IBM and Lenovo ThinkPad firmware for
3094 * the various ThinkPad models. The driver behaves
3095 * differently for KEY_RESERVED: such keys have their
3096 * hot key mask *unset* in mask_recommended, and also
3097 * in the initial hot key mask programmed into the
3098 * firmware at driver load time, which means the firm-
3099 * ware may react very differently if you change them to
3100 * something else;
3101 *
3102 * 2. You must be subscribed to the linux-thinkpad and
3103 * ibm-acpi-devel mailing lists, and you should read the
3104 * list archives since 2007 if you want to change the
3105 * keymaps. This requirement exists so that you will
3106 * know the past history of problems with the thinkpad-
3107 * acpi driver keymaps, and also that you will be
3108 * listening to any bug reports;
3109 *
3110 * 3. Do not send thinkpad-acpi specific patches directly to
3111 * for merging, *ever*. Send them to the linux-acpi
3112 * mailinglist for comments. Merging is to be done only
3113 * through acpi-test and the ACPI maintainer.
3114 *
3115 * If the above is too much to ask, don't change the keymap.
3116 * Ask the thinkpad-acpi maintainer to do it, instead.
3117 */
edf0e0e5
HMH		 3118 static u16 ibm_keycode_map[] __initdata = {
3119 /* Scan Codes 0x00 to 0x0B: ACPI HKEY FN+F1..F12 */
3120 KEY_FN_F1, KEY_FN_F2, KEY_COFFEE, KEY_SLEEP,
3121 KEY_WLAN, KEY_FN_F6, KEY_SWITCHVIDEOMODE, KEY_FN_F8,
3122 KEY_FN_F9, KEY_FN_F10, KEY_FN_F11, KEY_SUSPEND,
0f089147
HMH		 3123
3124 /* Scan codes 0x0C to 0x1F: Other ACPI HKEY hot keys */
edf0e0e5
HMH		 3125 KEY_UNKNOWN, /* 0x0C: FN+BACKSPACE */
3126 KEY_UNKNOWN, /* 0x0D: FN+INSERT */
3127 KEY_UNKNOWN, /* 0x0E: FN+DELETE */
0f089147 3128
0d922e3b 3129 /* brightness: firmware always reacts to them */
e927c08d 3130 KEY_RESERVED, /* 0x0F: FN+HOME (brightness up) */
e927c08d 3131 KEY_RESERVED, /* 0x10: FN+END (brightness down) */
0f089147
HMH		 3132
3133 /* Thinklight: firmware always react to it */
edf0e0e5 3134 KEY_RESERVED, /* 0x11: FN+PGUP (thinklight toggle) */
0f089147 3135
edf0e0e5
HMH		 3136 KEY_UNKNOWN, /* 0x12: FN+PGDOWN */
3137 KEY_ZOOM, /* 0x13: FN+SPACE (zoom) */
0f089147
HMH		 3138
3139 /* Volume: firmware always react to it and reprograms
3140 * the built-in *extra* mixer. Never map it to control
3141 * another mixer by default. */
e927c08d
HMH		 3142 KEY_RESERVED, /* 0x14: VOLUME UP */
3143 KEY_RESERVED, /* 0x15: VOLUME DOWN */
3144 KEY_RESERVED, /* 0x16: MUTE */
0f089147 3145
edf0e0e5 3146 KEY_VENDOR, /* 0x17: Thinkpad/AccessIBM/Lenovo */
0f089147 3147
edf0e0e5
HMH		 3148 /* (assignments unknown, please report if found) */
3149 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN,
3150 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN,
3151 };
3152 static u16 lenovo_keycode_map[] __initdata = {
3153 /* Scan Codes 0x00 to 0x0B: ACPI HKEY FN+F1..F12 */
3154 KEY_FN_F1, KEY_COFFEE, KEY_BATTERY, KEY_SLEEP,
3155 KEY_WLAN, KEY_FN_F6, KEY_SWITCHVIDEOMODE, KEY_FN_F8,
3156 KEY_FN_F9, KEY_FN_F10, KEY_FN_F11, KEY_SUSPEND,
0f089147
HMH		 3157
3158 /* Scan codes 0x0C to 0x1F: Other ACPI HKEY hot keys */
edf0e0e5
HMH		 3159 KEY_UNKNOWN, /* 0x0C: FN+BACKSPACE */
3160 KEY_UNKNOWN, /* 0x0D: FN+INSERT */
3161 KEY_UNKNOWN, /* 0x0E: FN+DELETE */
0f089147 3162
de4c8cc7
HMH		 3163 /* These should be enabled --only-- when ACPI video
3164 * is disabled (i.e. in "vendor" mode), and are handled
3165 * in a special way by the init code */
3166 KEY_BRIGHTNESSUP, /* 0x0F: FN+HOME (brightness up) */
3167 KEY_BRIGHTNESSDOWN, /* 0x10: FN+END (brightness down) */
0f089147 3168
edf0e0e5 3169 KEY_RESERVED, /* 0x11: FN+PGUP (thinklight toggle) */
0f089147 3170
edf0e0e5
HMH		 3171 KEY_UNKNOWN, /* 0x12: FN+PGDOWN */
3172 KEY_ZOOM, /* 0x13: FN+SPACE (zoom) */
0f089147
HMH		 3173
3174 /* Volume: z60/z61, T60 (BIOS version?): firmware always
3175 * react to it and reprograms the built-in *extra* mixer.
3176 * Never map it to control another mixer by default.
3177 *
3178 * T60?, T61, R60?, R61: firmware and EC tries to send
3179 * these over the regular keyboard, so these are no-ops,
3180 * but there are still weird bugs re. MUTE, so do not
3181 * change unless you get test reports from all Lenovo
3182 * models. May cause the BIOS to interfere with the
3183 * HDA mixer.
3184 */
e927c08d
HMH		 3185 KEY_RESERVED, /* 0x14: VOLUME UP */
3186 KEY_RESERVED, /* 0x15: VOLUME DOWN */
3187 KEY_RESERVED, /* 0x16: MUTE */
0f089147 3188
edf0e0e5 3189 KEY_VENDOR, /* 0x17: Thinkpad/AccessIBM/Lenovo */
0f089147 3190
edf0e0e5
HMH		 3191 /* (assignments unknown, please report if found) */
3192 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN,
3193 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN,
3194 };
3195
3196#define TPACPI_HOTKEY_MAP_LEN ARRAY_SIZE(ibm_keycode_map)
3197#define TPACPI_HOTKEY_MAP_SIZE sizeof(ibm_keycode_map)
3198#define TPACPI_HOTKEY_MAP_TYPESIZE sizeof(ibm_keycode_map[0])
3199
6a38abbf 3200 int res, i;
74941a69 3201 int status;
1b6521dc 3202 int hkeyv;
d89a727a
HMH		 3203 bool radiosw_state = false;
3204 bool tabletsw_state = false;
b86c4722 3205
0d922e3b
HMH		 3206 unsigned long quirks;
3207
56e2c200
HMH		 3208 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY,
3209 "initializing hotkey subdriver\n");
fe08bc4b 3210
6a38abbf 3211 BUG_ON(!tpacpi_inputdev);
01e88f25
HMH		 3212 BUG_ON(tpacpi_inputdev->open != NULL ||
3213 tpacpi_inputdev->close != NULL);
6a38abbf 3214
e0c7dfe7 3215 TPACPI_ACPIHANDLE_INIT(hkey);
40ca9fdf 3216 mutex_init(&hotkey_mutex);
5fba344c 3217
01e88f25
HMH		 3218#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
3219 mutex_init(&hotkey_thread_mutex);
3220 mutex_init(&hotkey_thread_data_mutex);
3221#endif
3222
56b6aeb0 3223 /* hotkey not supported on 570 */
d8fd94d9 3224 tp_features.hotkey = hkey_handle != NULL;
56b6aeb0 3225
56e2c200
HMH		 3226 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY,
3227 "hotkeys are %s\n",
d8fd94d9 3228 str_supported(tp_features.hotkey));
fe08bc4b 3229
9c0a76e1
HMH		 3230 if (!tp_features.hotkey)
3231 return 1;
a0416420 3232
0d922e3b
HMH		 3233 quirks = tpacpi_check_quirks(tpacpi_hotkey_qtable,
3234 ARRAY_SIZE(tpacpi_hotkey_qtable));
3235
d64c81c4
HMH		 3236 tpacpi_disable_brightness_delay();
3237
0d922e3b
HMH		 3238 /* MUST have enough space for all attributes to be added to
3239 * hotkey_dev_attributes */
3240 hotkey_dev_attributes = create_attr_set(
3241 ARRAY_SIZE(hotkey_attributes) + 2,
3242 NULL);
9c0a76e1
HMH		 3243 if (!hotkey_dev_attributes)
3244 return -ENOMEM;
3245 res = add_many_to_attr_set(hotkey_dev_attributes,
3246 hotkey_attributes,
3247 ARRAY_SIZE(hotkey_attributes));
3248 if (res)
3249 goto err_exit;
3250
0d922e3b 3251 /* mask not supported on 600e/x, 770e, 770x, A21e, A2xm/p,
9c0a76e1
HMH		 3252 A30, R30, R31, T20-22, X20-21, X22-24. Detected by checking
3253 for HKEY interface version 0x100 */
3254 if (acpi_evalf(hkey_handle, &hkeyv, "MHKV", "qd")) {
3255 if ((hkeyv >> 8) != 1) {
3256 printk(TPACPI_ERR "unknown version of the "
3257 "HKEY interface: 0x%x\n", hkeyv);
3258 printk(TPACPI_ERR "please report this to %s\n",
3259 TPACPI_MAIL);
3260 } else {
3261 /*
3262 * MHKV 0x100 in A31, R40, R40e,
3263 * T4x, X31, and later
3264 */
56e2c200
HMH		 3265 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY,
3266 "firmware HKEY interface version: 0x%x\n",
3267 hkeyv);
0d922e3b
HMH		 3268
3269 /* Paranoia check AND init hotkey_all_mask */
3270 if (!acpi_evalf(hkey_handle, &hotkey_all_mask,
3271 "MHKA", "qd")) {
3272 printk(TPACPI_ERR
3273 "missing MHKA handler, "
3274 "please report this to %s\n",
3275 TPACPI_MAIL);
3276 /* Fallback: pre-init for FN+F3,F4,F12 */
3277 hotkey_all_mask = 0x080cU;
3278 } else {
3279 tp_features.hotkey_mask = 1;
3280 }
1b6521dc 3281 }
9c0a76e1 3282 }
56b6aeb0 3283
56e2c200
HMH		 3284 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY,
3285 "hotkey masks are %s\n",
9c0a76e1 3286 str_supported(tp_features.hotkey_mask));
fe08bc4b 3287
0d922e3b
HMH		 3288 /* Init hotkey_all_mask if not initialized yet */
3289 if (!tp_features.hotkey_mask && !hotkey_all_mask &&
3290 (quirks & TPACPI_HK_Q_INIMASK))
3291 hotkey_all_mask = 0x080cU; /* FN+F12, FN+F4, FN+F3 */
9b010de5 3292
0d922e3b 3293 /* Init hotkey_acpi_mask and hotkey_orig_mask */
9c0a76e1 3294 if (tp_features.hotkey_mask) {
0d922e3b
HMH		 3295 /* hotkey_source_mask *must* be zero for
3296 * the first hotkey_mask_get to return hotkey_orig_mask */
9c0a76e1
HMH		 3297 res = hotkey_mask_get();
3298 if (res)
3299 goto err_exit;
3300
0d922e3b
HMH		 3301 hotkey_orig_mask = hotkey_acpi_mask;
3302 } else {
3303 hotkey_orig_mask = hotkey_all_mask;
3304 hotkey_acpi_mask = hotkey_all_mask;
9c0a76e1 3305 }
74941a69 3306
a73f3091
HMH		 3307#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
3308 if (dbg_wlswemul) {
3309 tp_features.hotkey_wlsw = 1;
d89a727a 3310 radiosw_state = !!tpacpi_wlsw_emulstate;
a73f3091
HMH		 3311 printk(TPACPI_INFO
3312 "radio switch emulation enabled\n");
3313 } else
3314#endif
9c0a76e1
HMH		 3315 /* Not all thinkpads have a hardware radio switch */
3316 if (acpi_evalf(hkey_handle, &status, "WLSW", "qd")) {
3317 tp_features.hotkey_wlsw = 1;
d89a727a 3318 radiosw_state = !!status;
9c0a76e1
HMH		 3319 printk(TPACPI_INFO
3320 "radio switch found; radios are %s\n",
3321 enabled(status, 0));
3a872080
HMH		 3322 }
3323 if (tp_features.hotkey_wlsw)
9c0a76e1
HMH		 3324 res = add_to_attr_set(hotkey_dev_attributes,
3325 &dev_attr_hotkey_radio_sw.attr);
74941a69 3326
9c0a76e1
HMH		 3327 /* For X41t, X60t, X61t Tablets... */
3328 if (!res && acpi_evalf(hkey_handle, &status, "MHKG", "qd")) {
3329 tp_features.hotkey_tablet = 1;
d89a727a 3330 tabletsw_state = !!(status & TP_HOTKEY_TABLET_MASK);
9c0a76e1
HMH		 3331 printk(TPACPI_INFO
3332 "possible tablet mode switch found; "
3333 "ThinkPad in %s mode\n",
d89a727a 3334 (tabletsw_state) ? "tablet" : "laptop");
9c0a76e1
HMH		 3335 res = add_to_attr_set(hotkey_dev_attributes,
3336 &dev_attr_hotkey_tablet_mode.attr);
3337 }
6c231bd5 3338
9c0a76e1
HMH		 3339 if (!res)
3340 res = register_attr_set_with_sysfs(
3341 hotkey_dev_attributes,
3342 &tpacpi_pdev->dev.kobj);
3343 if (res)
3344 goto err_exit;
6a38abbf 3345
9c0a76e1 3346 /* Set up key map */
edf0e0e5 3347
9c0a76e1
HMH		 3348 hotkey_keycode_map = kmalloc(TPACPI_HOTKEY_MAP_SIZE,
3349 GFP_KERNEL);
3350 if (!hotkey_keycode_map) {
3351 printk(TPACPI_ERR
3352 "failed to allocate memory for key map\n");
3353 res = -ENOMEM;
3354 goto err_exit;
3355 }
edf0e0e5 3356
9c0a76e1 3357 if (thinkpad_id.vendor == PCI_VENDOR_ID_LENOVO) {
56e2c200 3358 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY,
9c0a76e1
HMH		 3359 "using Lenovo default hot key map\n");
3360 memcpy(hotkey_keycode_map, &lenovo_keycode_map,
3361 TPACPI_HOTKEY_MAP_SIZE);
3362 } else {
56e2c200 3363 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY,
9c0a76e1
HMH		 3364 "using IBM default hot key map\n");
3365 memcpy(hotkey_keycode_map, &ibm_keycode_map,
3366 TPACPI_HOTKEY_MAP_SIZE);
3367 }
edf0e0e5 3368
792979c8 3369 input_set_capability(tpacpi_inputdev, EV_MSC, MSC_SCAN);
9c0a76e1
HMH		 3370 tpacpi_inputdev->keycodesize = TPACPI_HOTKEY_MAP_TYPESIZE;
3371 tpacpi_inputdev->keycodemax = TPACPI_HOTKEY_MAP_LEN;
3372 tpacpi_inputdev->keycode = hotkey_keycode_map;
3373 for (i = 0; i < TPACPI_HOTKEY_MAP_LEN; i++) {
3374 if (hotkey_keycode_map[i] != KEY_RESERVED) {
792979c8
HMH		 3375 input_set_capability(tpacpi_inputdev, EV_KEY,
3376 hotkey_keycode_map[i]);
9c0a76e1
HMH		 3377 } else {
3378 if (i < sizeof(hotkey_reserved_mask)*8)
3379 hotkey_reserved_mask |= 1 << i;
6a38abbf 3380 }
9c0a76e1 3381 }
6a38abbf 3382
9c0a76e1 3383 if (tp_features.hotkey_wlsw) {
792979c8 3384 input_set_capability(tpacpi_inputdev, EV_SW, SW_RFKILL_ALL);
d89a727a
HMH		 3385 input_report_switch(tpacpi_inputdev,
3386 SW_RFKILL_ALL, radiosw_state);
9c0a76e1
HMH		 3387 }
3388 if (tp_features.hotkey_tablet) {
792979c8 3389 input_set_capability(tpacpi_inputdev, EV_SW, SW_TABLET_MODE);
d89a727a
HMH		 3390 input_report_switch(tpacpi_inputdev,
3391 SW_TABLET_MODE, tabletsw_state);
9c0a76e1 3392 }
5c29d58f 3393
9c0a76e1
HMH		 3394 /* Do not issue duplicate brightness change events to
3395 * userspace */
3396 if (!tp_features.bright_acpimode)
3397 /* update bright_acpimode... */
3398 tpacpi_check_std_acpi_brightness_support();
b5972796 3399
8bf3d4c5 3400 if (tp_features.bright_acpimode && acpi_video_backlight_support()) {
9c0a76e1
HMH		 3401 printk(TPACPI_INFO
3402 "This ThinkPad has standard ACPI backlight "
3403 "brightness control, supported by the ACPI "
3404 "video driver\n");
3405 printk(TPACPI_NOTICE
3406 "Disabling thinkpad-acpi brightness events "
3407 "by default...\n");
3408
de4c8cc7
HMH		 3409 /* Disable brightness up/down on Lenovo thinkpads when
3410 * ACPI is handling them, otherwise it is plain impossible
3411 * for userspace to do something even remotely sane */
9c0a76e1
HMH		 3412 hotkey_reserved_mask |=
3413 (1 << TP_ACPI_HOTKEYSCAN_FNHOME)
3414 | (1 << TP_ACPI_HOTKEYSCAN_FNEND);
de4c8cc7
HMH		 3415 hotkey_unmap(TP_ACPI_HOTKEYSCAN_FNHOME);
3416 hotkey_unmap(TP_ACPI_HOTKEYSCAN_FNEND);
9c0a76e1 3417 }
ff80f137 3418
230d8cf2 3419#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
0d922e3b
HMH		 3420 hotkey_source_mask = TPACPI_HKEY_NVRAM_GOOD_MASK
3421 & ~hotkey_all_mask
3422 & ~hotkey_reserved_mask;
230d8cf2
HMH		 3423
3424 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY,
3425 "hotkey source mask 0x%08x, polling freq %u\n",
3426 hotkey_source_mask, hotkey_poll_freq);
3427#endif
3428
56e2c200
HMH		 3429 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY,
3430 "enabling firmware HKEY event interface...\n");
2586d566 3431 res = hotkey_status_set(true);
9c0a76e1
HMH		 3432 if (res) {
3433 hotkey_exit();
3434 return res;
3435 }
0d922e3b
HMH		 3436 res = hotkey_mask_set(((hotkey_all_mask & ~hotkey_reserved_mask)
3437 | hotkey_driver_mask)
3438 & ~hotkey_source_mask);
9c0a76e1
HMH		 3439 if (res < 0 && res != -ENXIO) {
3440 hotkey_exit();
3441 return res;
3442 }
0d922e3b
HMH		 3443 hotkey_user_mask = (hotkey_acpi_mask | hotkey_source_mask)
3444 & ~hotkey_reserved_mask;
3445 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY,
3446 "initial masks: user=0x%08x, fw=0x%08x, poll=0x%08x\n",
3447 hotkey_user_mask, hotkey_acpi_mask, hotkey_source_mask);
01e88f25 3448
56e2c200
HMH		 3449 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY,
3450 "legacy ibm/hotkey event reporting over procfs %s\n",
9c0a76e1
HMH		 3451 (hotkey_report_mode < 2) ?
3452 "enabled" : "disabled");
01e88f25 3453
9c0a76e1
HMH		 3454 tpacpi_inputdev->open = &hotkey_inputdev_open;
3455 tpacpi_inputdev->close = &hotkey_inputdev_close;
56b6aeb0 3456
db25f16d 3457 hotkey_poll_setup_safe(true);
56b6aeb0 3458
9c0a76e1 3459 return 0;
01e88f25 3460
9c0a76e1
HMH		 3461err_exit:
3462 delete_attr_set(hotkey_dev_attributes, &tpacpi_pdev->dev.kobj);
3463 hotkey_dev_attributes = NULL;
a0416420 3464
9c0a76e1 3465 return (res < 0)? res : 1;
56b6aeb0
HMH		 3466}
3467
3827e7a3
HMH		 3468static bool hotkey_notify_hotkey(const u32 hkey,
3469 bool *send_acpi_ev,
3470 bool *ignore_acpi_ev)
3471{
3472 /* 0x1000-0x1FFF: key presses */
3473 unsigned int scancode = hkey & 0xfff;
3474 *send_acpi_ev = true;
3475 *ignore_acpi_ev = false;
3476
3477 if (scancode > 0 && scancode < 0x21) {
3478 scancode--;
3479 if (!(hotkey_source_mask & (1 << scancode))) {
0d922e3b 3480 tpacpi_input_send_key_masked(scancode);
3827e7a3
HMH		 3481 *send_acpi_ev = false;
3482 } else {
3483 *ignore_acpi_ev = true;
3484 }
3485 return true;
3486 }
3487 return false;
3488}
3489
3490static bool hotkey_notify_wakeup(const u32 hkey,
3491 bool *send_acpi_ev,
3492 bool *ignore_acpi_ev)
3493{
3494 /* 0x2000-0x2FFF: Wakeup reason */
3495 *send_acpi_ev = true;
3496 *ignore_acpi_ev = false;
3497
3498 switch (hkey) {
67bcae6e
HMH		 3499 case TP_HKEY_EV_WKUP_S3_UNDOCK: /* suspend, undock */
3500 case TP_HKEY_EV_WKUP_S4_UNDOCK: /* hibernation, undock */
3827e7a3
HMH		 3501 hotkey_wakeup_reason = TP_ACPI_WAKEUP_UNDOCK;
3502 *ignore_acpi_ev = true;
3503 break;
3504
67bcae6e
HMH		 3505 case TP_HKEY_EV_WKUP_S3_BAYEJ: /* suspend, bay eject */
3506 case TP_HKEY_EV_WKUP_S4_BAYEJ: /* hibernation, bay eject */
3827e7a3
HMH		 3507 hotkey_wakeup_reason = TP_ACPI_WAKEUP_BAYEJ;
3508 *ignore_acpi_ev = true;
3509 break;
3510
67bcae6e
HMH		 3511 case TP_HKEY_EV_WKUP_S3_BATLOW: /* Battery on critical low level/S3 */
3512 case TP_HKEY_EV_WKUP_S4_BATLOW: /* Battery on critical low level/S4 */
106b4e66
HMH		 3513 printk(TPACPI_ALERT
3514 "EMERGENCY WAKEUP: battery almost empty\n");
3515 /* how to auto-heal: */
3516 /* 2313: woke up from S3, go to S4/S5 */
3517 /* 2413: woke up from S4, go to S5 */
3518 break;
3519
3827e7a3
HMH		 3520 default:
3521 return false;
3522 }
3523
3524 if (hotkey_wakeup_reason != TP_ACPI_WAKEUP_NONE) {
3525 printk(TPACPI_INFO
3526 "woke up due to a hot-unplug "
3527 "request...\n");
3528 hotkey_wakeup_reason_notify_change();
3529 }
3530 return true;
3531}
3532
3533static bool hotkey_notify_usrevent(const u32 hkey,
3534 bool *send_acpi_ev,
3535 bool *ignore_acpi_ev)
3536{
3537 /* 0x5000-0x5FFF: human interface helpers */
3538 *send_acpi_ev = true;
3539 *ignore_acpi_ev = false;
3540
3541 switch (hkey) {
67bcae6e
HMH		 3542 case TP_HKEY_EV_PEN_INSERTED: /* X61t: tablet pen inserted into bay */
3543 case TP_HKEY_EV_PEN_REMOVED: /* X61t: tablet pen removed from bay */
3827e7a3
HMH		 3544 return true;
3545
67bcae6e
HMH		 3546 case TP_HKEY_EV_TABLET_TABLET: /* X41t-X61t: tablet mode */
3547 case TP_HKEY_EV_TABLET_NOTEBOOK: /* X41t-X61t: normal mode */
3827e7a3
HMH		 3548 tpacpi_input_send_tabletsw();
3549 hotkey_tablet_mode_notify_change();
3550 *send_acpi_ev = false;
3551 return true;
3552
67bcae6e
HMH		 3553 case TP_HKEY_EV_LID_CLOSE: /* Lid closed */
3554 case TP_HKEY_EV_LID_OPEN: /* Lid opened */
3555 case TP_HKEY_EV_BRGHT_CHANGED: /* brightness changed */
176dd985 3556 /* do not propagate these events */
3827e7a3
HMH		 3557 *ignore_acpi_ev = true;
3558 return true;
3559
3560 default:
3561 return false;
3562 }
3563}
3564
9ebd9e83
HMH		 3565static void thermal_dump_all_sensors(void);
3566
106b4e66
HMH		 3567static bool hotkey_notify_thermal(const u32 hkey,
3568 bool *send_acpi_ev,
3569 bool *ignore_acpi_ev)
3570{
9ebd9e83
HMH		 3571 bool known = true;
3572
106b4e66
HMH		 3573 /* 0x6000-0x6FFF: thermal alarms */
3574 *send_acpi_ev = true;
3575 *ignore_acpi_ev = false;
3576
3577 switch (hkey) {
9ebd9e83
HMH		 3578 case TP_HKEY_EV_THM_TABLE_CHANGED:
3579 printk(TPACPI_INFO
3580 "EC reports that Thermal Table has changed\n");
3581 /* recommended action: do nothing, we don't have
3582 * Lenovo ATM information */
3583 return true;
67bcae6e 3584 case TP_HKEY_EV_ALARM_BAT_HOT:
106b4e66
HMH		 3585 printk(TPACPI_CRIT
3586 "THERMAL ALARM: battery is too hot!\n");
3587 /* recommended action: warn user through gui */
9ebd9e83 3588 break;
67bcae6e 3589 case TP_HKEY_EV_ALARM_BAT_XHOT:
106b4e66
HMH		 3590 printk(TPACPI_ALERT
3591 "THERMAL EMERGENCY: battery is extremely hot!\n");
3592 /* recommended action: immediate sleep/hibernate */
9ebd9e83 3593 break;
67bcae6e 3594 case TP_HKEY_EV_ALARM_SENSOR_HOT:
106b4e66
HMH		 3595 printk(TPACPI_CRIT
3596 "THERMAL ALARM: "
3597 "a sensor reports something is too hot!\n");
3598 /* recommended action: warn user through gui, that */
3599 /* some internal component is too hot */
9ebd9e83 3600 break;
67bcae6e 3601 case TP_HKEY_EV_ALARM_SENSOR_XHOT:
106b4e66
HMH		 3602 printk(TPACPI_ALERT
3603 "THERMAL EMERGENCY: "
3604 "a sensor reports something is extremely hot!\n");
3605 /* recommended action: immediate sleep/hibernate */
9ebd9e83 3606 break;
106b4e66
HMH		 3607 default:
3608 printk(TPACPI_ALERT
3609 "THERMAL ALERT: unknown thermal alarm received\n");
9ebd9e83 3610 known = false;
106b4e66 3611 }
9ebd9e83
HMH		 3612
3613 thermal_dump_all_sensors();
3614
3615 return known;
106b4e66
HMH		 3616}
3617
56b6aeb0
HMH		 3618static void hotkey_notify(struct ibm_struct *ibm, u32 event)
3619{
6a38abbf 3620 u32 hkey;
3827e7a3
HMH		 3621 bool send_acpi_ev;
3622 bool ignore_acpi_ev;
3623 bool known_ev;
3eea123d
HMH		 3624
3625 if (event != 0x80) {
35ff8b9f
HMH		 3626 printk(TPACPI_ERR
3627 "unknown HKEY notification event %d\n", event);
3eea123d 3628 /* forward it to userspace, maybe it knows how to handle it */
35ff8b9f
HMH		 3629 acpi_bus_generate_netlink_event(
3630 ibm->acpi->device->pnp.device_class,
e0b36fc5 3631 dev_name(&ibm->acpi->device->dev),
35ff8b9f 3632 event, 0);
3eea123d
HMH		 3633 return;
3634 }
3635
3636 while (1) {
3637 if (!acpi_evalf(hkey_handle, &hkey, "MHKP", "d")) {
e0c7dfe7 3638 printk(TPACPI_ERR "failed to retrieve HKEY event\n");
3eea123d
HMH		 3639 return;
3640 }
3641
3642 if (hkey == 0) {
3643 /* queue empty */
3644 return;
3645 }
3646
3827e7a3
HMH		 3647 send_acpi_ev = true;
3648 ignore_acpi_ev = false;
56b6aeb0 3649
ff80f137
HMH		 3650 switch (hkey >> 12) {
3651 case 1:
3652 /* 0x1000-0x1FFF: key presses */
3827e7a3
HMH		 3653 known_ev = hotkey_notify_hotkey(hkey, &send_acpi_ev,
3654 &ignore_acpi_ev);
ff80f137 3655 break;
a713b4d7 3656 case 2:
3827e7a3
HMH		 3657 /* 0x2000-0x2FFF: Wakeup reason */
3658 known_ev = hotkey_notify_wakeup(hkey, &send_acpi_ev,
3659 &ignore_acpi_ev);
a713b4d7
HMH		 3660 break;
3661 case 3:
3827e7a3 3662 /* 0x3000-0x3FFF: bay-related wakeups */
67bcae6e 3663 if (hkey == TP_HKEY_EV_BAYEJ_ACK) {
a713b4d7
HMH		 3664 hotkey_autosleep_ack = 1;
3665 printk(TPACPI_INFO
3666 "bay ejected\n");
50ebec09 3667 hotkey_wakeup_hotunplug_complete_notify_change();
3827e7a3 3668 known_ev = true;
a713b4d7 3669 } else {
3827e7a3 3670 known_ev = false;
a713b4d7
HMH		 3671 }
3672 break;
3673 case 4:
3827e7a3 3674 /* 0x4000-0x4FFF: dock-related wakeups */
67bcae6e 3675 if (hkey == TP_HKEY_EV_UNDOCK_ACK) {
a713b4d7
HMH		 3676 hotkey_autosleep_ack = 1;
3677 printk(TPACPI_INFO
3678 "undocked\n");
50ebec09 3679 hotkey_wakeup_hotunplug_complete_notify_change();
3827e7a3 3680 known_ev = true;
a713b4d7 3681 } else {
3827e7a3 3682 known_ev = false;
a713b4d7
HMH		 3683 }
3684 break;
ff80f137 3685 case 5:
d1edb2b5 3686 /* 0x5000-0x5FFF: human interface helpers */
3827e7a3
HMH		 3687 known_ev = hotkey_notify_usrevent(hkey, &send_acpi_ev,
3688 &ignore_acpi_ev);
ff80f137 3689 break;
106b4e66
HMH		 3690 case 6:
3691 /* 0x6000-0x6FFF: thermal alarms */
3692 known_ev = hotkey_notify_thermal(hkey, &send_acpi_ev,
3693 &ignore_acpi_ev);
3694 break;
ff80f137
HMH		 3695 case 7:
3696 /* 0x7000-0x7FFF: misc */
67bcae6e
HMH		 3697 if (tp_features.hotkey_wlsw &&
3698 hkey == TP_HKEY_EV_RFKILL_CHANGED) {
733e27c1 3699 tpacpi_send_radiosw_update();
3b64b51d 3700 send_acpi_ev = 0;
3827e7a3 3701 known_ev = true;
6a38abbf 3702 break;
6a38abbf 3703 }
ff80f137
HMH		 3704 /* fallthrough to default */
3705 default:
3827e7a3 3706 known_ev = false;
3b64b51d 3707 }
3827e7a3 3708 if (!known_ev) {
35ff8b9f
HMH		 3709 printk(TPACPI_NOTICE
3710 "unhandled HKEY event 0x%04x\n", hkey);
cb429358
HMH		 3711 printk(TPACPI_NOTICE
3712 "please report the conditions when this "
3713 "event happened to %s\n", TPACPI_MAIL);
6a38abbf 3714 }
ff80f137 3715
3eea123d 3716 /* Legacy events */
35ff8b9f
HMH		 3717 if (!ignore_acpi_ev &&
3718 (send_acpi_ev || hotkey_report_mode < 2)) {
3719 acpi_bus_generate_proc_event(ibm->acpi->device,
3720 event, hkey);
3e5ce914 3721 }
ff80f137 3722
3eea123d 3723 /* netlink events */
3e5ce914 3724 if (!ignore_acpi_ev && send_acpi_ev) {
35ff8b9f
HMH		 3725 acpi_bus_generate_netlink_event(
3726 ibm->acpi->device->pnp.device_class,
e0b36fc5 3727 dev_name(&ibm->acpi->device->dev),
35ff8b9f 3728 event, hkey);
3eea123d 3729 }
56b6aeb0
HMH		 3730 }
3731}
3732
a713b4d7
HMH		 3733static void hotkey_suspend(pm_message_t state)
3734{
3735 /* Do these on suspend, we get the events on early resume! */
3736 hotkey_wakeup_reason = TP_ACPI_WAKEUP_NONE;
3737 hotkey_autosleep_ack = 0;
3738}
3739
5c29d58f
HMH		 3740static void hotkey_resume(void)
3741{
d64c81c4
HMH		 3742 tpacpi_disable_brightness_delay();
3743
0d922e3b
HMH		 3744 if (hotkey_status_set(true) < 0 ||
3745 hotkey_mask_set(hotkey_acpi_mask) < 0)
35ff8b9f 3746 printk(TPACPI_ERR
0d922e3b
HMH		 3747 "error while attempting to reset the event "
3748 "firmware interface\n");
3749
733e27c1 3750 tpacpi_send_radiosw_update();
6c231bd5 3751 hotkey_tablet_mode_notify_change();
50ebec09
HMH		 3752 hotkey_wakeup_reason_notify_change();
3753 hotkey_wakeup_hotunplug_complete_notify_change();
db25f16d 3754 hotkey_poll_setup_safe(false);
5c29d58f
HMH		 3755}
3756
a0416420 3757/* procfs -------------------------------------------------------------- */
78f81cc4 3758static int hotkey_read(char *p)
1da177e4 3759{
ae92bd17 3760 int res, status;
1da177e4
LT		 3761 int len = 0;
3762
d8fd94d9 3763 if (!tp_features.hotkey) {
78f81cc4
BD		 3764 len += sprintf(p + len, "status:\t\tnot supported\n");
3765 return len;
3766 }
3767
7646ea88 3768 if (mutex_lock_killable(&hotkey_mutex))
fc589a3c 3769 return -ERESTARTSYS;
b2c985e7
HMH		 3770 res = hotkey_status_get(&status);
3771 if (!res)
3772 res = hotkey_mask_get();
40ca9fdf 3773 mutex_unlock(&hotkey_mutex);
b86c4722
HMH		 3774 if (res)
3775 return res;
1da177e4
LT		 3776
3777 len += sprintf(p + len, "status:\t\t%s\n", enabled(status, 0));
0d922e3b
HMH		 3778 if (hotkey_all_mask) {
3779 len += sprintf(p + len, "mask:\t\t0x%08x\n", hotkey_user_mask);
1da177e4
LT		 3780 len += sprintf(p + len,
3781 "commands:\tenable, disable, reset, <mask>\n");
3782 } else {
3783 len += sprintf(p + len, "mask:\t\tnot supported\n");
3784 len += sprintf(p + len, "commands:\tenable, disable, reset\n");
3785 }
3786
3787 return len;
3788}
3789
406e988b 3790static void hotkey_enabledisable_warn(bool enable)
2586d566
HMH		 3791{
3792 tpacpi_log_usertask("procfs hotkey enable/disable");
406e988b
HMH		 3793 if (!WARN((tpacpi_lifecycle == TPACPI_LIFE_RUNNING || !enable),
3794 TPACPI_WARN
3795 "hotkey enable/disable functionality has been "
3796 "removed from the driver. Hotkeys are always "
3797 "enabled\n"))
3798 printk(TPACPI_ERR
3799 "Please remove the hotkey=enable module "
3800 "parameter, it is deprecated. Hotkeys are always "
3801 "enabled\n");
2586d566
HMH		 3802}
3803
78f81cc4 3804static int hotkey_write(char *buf)
1da177e4 3805{
2586d566 3806 int res;
ae92bd17 3807 u32 mask;
1da177e4 3808 char *cmd;
1da177e4 3809
d8fd94d9 3810 if (!tp_features.hotkey)
1da177e4
LT		 3811 return -ENODEV;
3812
7646ea88 3813 if (mutex_lock_killable(&hotkey_mutex))
fc589a3c 3814 return -ERESTARTSYS;
40ca9fdf 3815
0d922e3b 3816 mask = hotkey_user_mask;
78f81cc4 3817
40ca9fdf 3818 res = 0;
1da177e4
LT		 3819 while ((cmd = next_cmd(&buf))) {
3820 if (strlencmp(cmd, "enable") == 0) {
406e988b 3821 hotkey_enabledisable_warn(1);
1da177e4 3822 } else if (strlencmp(cmd, "disable") == 0) {
406e988b 3823 hotkey_enabledisable_warn(0);
2586d566 3824 res = -EPERM;
1da177e4 3825 } else if (strlencmp(cmd, "reset") == 0) {
20c9aa46
HMH		 3826 mask = (hotkey_all_mask | hotkey_source_mask)
3827 & ~hotkey_reserved_mask;
1da177e4
LT		 3828 } else if (sscanf(cmd, "0x%x", &mask) == 1) {
3829 /* mask set */
3830 } else if (sscanf(cmd, "%x", &mask) == 1) {
3831 /* mask set */
40ca9fdf
HMH		 3832 } else {
3833 res = -EINVAL;
3834 goto errexit;
3835 }
1da177e4 3836 }
56e2c200 3837
0d922e3b 3838 if (!res) {
56e2c200
HMH		 3839 tpacpi_disclose_usertask("procfs hotkey",
3840 "set mask to 0x%08x\n", mask);
0d922e3b
HMH		 3841 res = hotkey_user_mask_set(mask);
3842 }
1da177e4 3843
40ca9fdf
HMH		 3844errexit:
3845 mutex_unlock(&hotkey_mutex);
3846 return res;
78f81cc4 3847}
1da177e4 3848
1ba90e3a 3849static const struct acpi_device_id ibm_htk_device_ids[] = {
e0c7dfe7 3850 {TPACPI_ACPI_HKEY_HID, 0},
1ba90e3a
TR		 3851 {"", 0},
3852};
3853
8d376cd6 3854static struct tp_acpi_drv_struct ibm_hotkey_acpidriver = {
1ba90e3a 3855 .hid = ibm_htk_device_ids,
8d376cd6
HMH		 3856 .notify = hotkey_notify,
3857 .handle = &hkey_handle,
3858 .type = ACPI_DEVICE_NOTIFY,
3859};
3860
a5763f22
HMH		 3861static struct ibm_struct hotkey_driver_data = {
3862 .name = "hotkey",
a5763f22
HMH		 3863 .read = hotkey_read,
3864 .write = hotkey_write,
3865 .exit = hotkey_exit,
5c29d58f 3866 .resume = hotkey_resume,
a713b4d7 3867 .suspend = hotkey_suspend,
8d376cd6 3868 .acpi = &ibm_hotkey_acpidriver,
a5763f22
HMH		 3869};
3870
56b6aeb0
HMH		 3871/*************************************************************************
3872 * Bluetooth subdriver
3873 */
1da177e4 3874
f74a27d4
HMH		 3875enum {
3876 /* ACPI GBDC/SBDC bits */
3877 TP_ACPI_BLUETOOTH_HWPRESENT = 0x01, /* Bluetooth hw available */
3878 TP_ACPI_BLUETOOTH_RADIOSSW = 0x02, /* Bluetooth radio enabled */
153f8220
HMH		 3879 TP_ACPI_BLUETOOTH_RESUMECTRL = 0x04, /* Bluetooth state at resume:
3880 off / last state */
3881};
3882
3883enum {
3884 /* ACPI \BLTH commands */
3885 TP_ACPI_BLTH_GET_ULTRAPORT_ID = 0x00, /* Get Ultraport BT ID */
3886 TP_ACPI_BLTH_GET_PWR_ON_RESUME = 0x01, /* Get power-on-resume state */
3887 TP_ACPI_BLTH_PWR_ON_ON_RESUME = 0x02, /* Resume powered on */
3888 TP_ACPI_BLTH_PWR_OFF_ON_RESUME = 0x03, /* Resume powered off */
3889 TP_ACPI_BLTH_SAVE_STATE = 0x05, /* Save state for S4/S5 */
f74a27d4
HMH		 3890};
3891
bee4cd9b
HMH		 3892#define TPACPI_RFK_BLUETOOTH_SW_NAME "tpacpi_bluetooth_sw"
3893
19d337df 3894static int bluetooth_get_status(void)
07431ec8
HMH		 3895{
3896 int status;
3897
a73f3091
HMH		 3898#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
3899 if (dbg_bluetoothemul)
3900 return (tpacpi_bluetooth_emulstate) ?
19d337df 3901 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF;
a73f3091
HMH		 3902#endif
3903
07431ec8
HMH		 3904 if (!acpi_evalf(hkey_handle, &status, "GBDC", "d"))
3905 return -EIO;
3906
0e74dc26 3907 return ((status & TP_ACPI_BLUETOOTH_RADIOSSW) != 0) ?
19d337df 3908 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF;
07431ec8
HMH		 3909}
3910
19d337df 3911static int bluetooth_set_status(enum tpacpi_rfkill_state state)
0e74dc26
HMH		 3912{
3913 int status;
3914
bee4cd9b 3915 vdbg_printk(TPACPI_DBG_RFKILL,
19d337df
JB		 3916 "will attempt to %s bluetooth\n",
3917 (state == TPACPI_RFK_RADIO_ON) ? "enable" : "disable");
bee4cd9b 3918
a73f3091
HMH		 3919#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
3920 if (dbg_bluetoothemul) {
19d337df 3921 tpacpi_bluetooth_emulstate = (state == TPACPI_RFK_RADIO_ON);
a73f3091
HMH		 3922 return 0;
3923 }
3924#endif
3925
153f8220 3926 /* We make sure to keep TP_ACPI_BLUETOOTH_RESUMECTRL off */
208b996b 3927 status = TP_ACPI_BLUETOOTH_RESUMECTRL;
19d337df 3928 if (state == TPACPI_RFK_RADIO_ON)
208b996b 3929 status |= TP_ACPI_BLUETOOTH_RADIOSSW;
19d337df 3930
07431ec8
HMH		 3931 if (!acpi_evalf(hkey_handle, NULL, "SBDC", "vd", status))
3932 return -EIO;
3933
3934 return 0;
3935}
f74a27d4 3936
d3a6ade4
HMH		 3937/* sysfs bluetooth enable ---------------------------------------------- */
3938static ssize_t bluetooth_enable_show(struct device *dev,
3939 struct device_attribute *attr,
3940 char *buf)
3941{
19d337df
JB		 3942 return tpacpi_rfk_sysfs_enable_show(TPACPI_RFK_BLUETOOTH_SW_ID,
3943 attr, buf);
d3a6ade4
HMH		 3944}
3945
3946static ssize_t bluetooth_enable_store(struct device *dev,
3947 struct device_attribute *attr,
3948 const char *buf, size_t count)
3949{
19d337df
JB		 3950 return tpacpi_rfk_sysfs_enable_store(TPACPI_RFK_BLUETOOTH_SW_ID,
3951 attr, buf, count);
d3a6ade4
HMH		 3952}
3953
3954static struct device_attribute dev_attr_bluetooth_enable =
cc4c24e1 3955 __ATTR(bluetooth_enable, S_IWUSR | S_IRUGO,
d3a6ade4
HMH		 3956 bluetooth_enable_show, bluetooth_enable_store);
3957
3958/* --------------------------------------------------------------------- */
3959
3960static struct attribute *bluetooth_attributes[] = {
3961 &dev_attr_bluetooth_enable.attr,
3962 NULL
3963};
3964
3965static const struct attribute_group bluetooth_attr_group = {
d3a6ade4
HMH		 3966 .attrs = bluetooth_attributes,
3967};
3968
19d337df
JB		 3969static const struct tpacpi_rfk_ops bluetooth_tprfk_ops = {
3970 .get_status = bluetooth_get_status,
3971 .set_status = bluetooth_set_status,
3972};
0e74dc26 3973
90d9d3c7
HMH		 3974static void bluetooth_shutdown(void)
3975{
3976 /* Order firmware to save current state to NVRAM */
3977 if (!acpi_evalf(NULL, NULL, "\\BLTH", "vd",
3978 TP_ACPI_BLTH_SAVE_STATE))
3979 printk(TPACPI_NOTICE
3980 "failed to save bluetooth state to NVRAM\n");
bee4cd9b
HMH		 3981 else
3982 vdbg_printk(TPACPI_DBG_RFKILL,
3983 "bluestooth state saved to NVRAM\n");
90d9d3c7
HMH		 3984}
3985
07431ec8
HMH		 3986static void bluetooth_exit(void)
3987{
3988 sysfs_remove_group(&tpacpi_pdev->dev.kobj,
3989 &bluetooth_attr_group);
19d337df
JB		 3990
3991 tpacpi_destroy_rfkill(TPACPI_RFK_BLUETOOTH_SW_ID);
3992
3993 bluetooth_shutdown();
07431ec8
HMH		 3994}
3995
a5763f22 3996static int __init bluetooth_init(struct ibm_init_struct *iibm)
1da177e4 3997{
d3a6ade4 3998 int res;
d6fdd1e9
HMH		 3999 int status = 0;
4000
bee4cd9b
HMH		 4001 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL,
4002 "initializing bluetooth subdriver\n");
fe08bc4b 4003
e0c7dfe7 4004 TPACPI_ACPIHANDLE_INIT(hkey);
5fba344c 4005
78f81cc4
BD		 4006 /* bluetooth not supported on 570, 600e/x, 770e, 770x, A21e, A2xm/p,
4007 G4x, R30, R31, R40e, R50e, T20-22, X20-21 */
d8fd94d9 4008 tp_features.bluetooth = hkey_handle &&
d6fdd1e9
HMH		 4009 acpi_evalf(hkey_handle, &status, "GBDC", "qd");
4010
bee4cd9b
HMH		 4011 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL,
4012 "bluetooth is %s, status 0x%02x\n",
d6fdd1e9
HMH		 4013 str_supported(tp_features.bluetooth),
4014 status);
4015
a73f3091
HMH		 4016#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
4017 if (dbg_bluetoothemul) {
4018 tp_features.bluetooth = 1;
4019 printk(TPACPI_INFO
4020 "bluetooth switch emulation enabled\n");
4021 } else
4022#endif
3a872080
HMH		 4023 if (tp_features.bluetooth &&
4024 !(status & TP_ACPI_BLUETOOTH_HWPRESENT)) {
4025 /* no bluetooth hardware present in system */
4026 tp_features.bluetooth = 0;
bee4cd9b 4027 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL,
3a872080
HMH		 4028 "bluetooth hardware not installed\n");
4029 }
4030
0e74dc26
HMH		 4031 if (!tp_features.bluetooth)
4032 return 1;
4033
0e74dc26 4034 res = tpacpi_new_rfkill(TPACPI_RFK_BLUETOOTH_SW_ID,
19d337df 4035 &bluetooth_tprfk_ops,
0e74dc26 4036 RFKILL_TYPE_BLUETOOTH,
bee4cd9b 4037 TPACPI_RFK_BLUETOOTH_SW_NAME,
19d337df
JB		 4038 true);
4039 if (res)
4040 return res;
4041
4042 res = sysfs_create_group(&tpacpi_pdev->dev.kobj,
4043 &bluetooth_attr_group);
0e74dc26 4044 if (res) {
19d337df 4045 tpacpi_destroy_rfkill(TPACPI_RFK_BLUETOOTH_SW_ID);
0e74dc26 4046 return res;
d6fdd1e9 4047 }
fe08bc4b 4048
0e74dc26 4049 return 0;
1da177e4
LT		 4050}
4051
d3a6ade4 4052/* procfs -------------------------------------------------------------- */
78f81cc4 4053static int bluetooth_read(char *p)
1da177e4 4054{
19d337df 4055 return tpacpi_rfk_procfs_read(TPACPI_RFK_BLUETOOTH_SW_ID, p);
1da177e4
LT		 4056}
4057
78f81cc4 4058static int bluetooth_write(char *buf)
1da177e4 4059{
19d337df 4060 return tpacpi_rfk_procfs_write(TPACPI_RFK_BLUETOOTH_SW_ID, buf);
1da177e4
LT		 4061}
4062
a5763f22
HMH		 4063static struct ibm_struct bluetooth_driver_data = {
4064 .name = "bluetooth",
4065 .read = bluetooth_read,
4066 .write = bluetooth_write,
d3a6ade4 4067 .exit = bluetooth_exit,
90d9d3c7 4068 .shutdown = bluetooth_shutdown,
a5763f22
HMH		 4069};
4070
56b6aeb0
HMH		 4071/*************************************************************************
4072 * Wan subdriver
4073 */
4074
f74a27d4
HMH		 4075enum {
4076 /* ACPI GWAN/SWAN bits */
4077 TP_ACPI_WANCARD_HWPRESENT = 0x01, /* Wan hw available */
4078 TP_ACPI_WANCARD_RADIOSSW = 0x02, /* Wan radio enabled */
153f8220
HMH		 4079 TP_ACPI_WANCARD_RESUMECTRL = 0x04, /* Wan state at resume:
4080 off / last state */
f74a27d4
HMH		 4081};
4082
bee4cd9b
HMH		 4083#define TPACPI_RFK_WWAN_SW_NAME "tpacpi_wwan_sw"
4084
19d337df 4085static int wan_get_status(void)
07431ec8
HMH		 4086{
4087 int status;
4088
a73f3091
HMH		 4089#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
4090 if (dbg_wwanemul)
4091 return (tpacpi_wwan_emulstate) ?
19d337df 4092 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF;
a73f3091
HMH		 4093#endif
4094
07431ec8
HMH		 4095 if (!acpi_evalf(hkey_handle, &status, "GWAN", "d"))
4096 return -EIO;
4097
0e74dc26 4098 return ((status & TP_ACPI_WANCARD_RADIOSSW) != 0) ?
19d337df 4099 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF;
0e74dc26
HMH		 4100}
4101
19d337df 4102static int wan_set_status(enum tpacpi_rfkill_state state)
07431ec8
HMH		 4103{
4104 int status;
4105
bee4cd9b 4106 vdbg_printk(TPACPI_DBG_RFKILL,
19d337df
JB		 4107 "will attempt to %s wwan\n",
4108 (state == TPACPI_RFK_RADIO_ON) ? "enable" : "disable");
bee4cd9b 4109
a73f3091
HMH		 4110#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
4111 if (dbg_wwanemul) {
19d337df 4112 tpacpi_wwan_emulstate = (state == TPACPI_RFK_RADIO_ON);
a73f3091
HMH		 4113 return 0;
4114 }
4115#endif
4116
208b996b
HMH		 4117 /* We make sure to set TP_ACPI_WANCARD_RESUMECTRL */
4118 status = TP_ACPI_WANCARD_RESUMECTRL;
19d337df 4119 if (state == TPACPI_RFK_RADIO_ON)
208b996b 4120 status |= TP_ACPI_WANCARD_RADIOSSW;
19d337df 4121
07431ec8
HMH		 4122 if (!acpi_evalf(hkey_handle, NULL, "SWAN", "vd", status))
4123 return -EIO;
4124
4125 return 0;
4126}
f74a27d4 4127
d3a6ade4
HMH		 4128/* sysfs wan enable ---------------------------------------------------- */
4129static ssize_t wan_enable_show(struct device *dev,
4130 struct device_attribute *attr,
4131 char *buf)
4132{
19d337df
JB		 4133 return tpacpi_rfk_sysfs_enable_show(TPACPI_RFK_WWAN_SW_ID,
4134 attr, buf);
d3a6ade4
HMH		 4135}
4136
4137static ssize_t wan_enable_store(struct device *dev,
4138 struct device_attribute *attr,
4139 const char *buf, size_t count)
4140{
19d337df
JB		 4141 return tpacpi_rfk_sysfs_enable_store(TPACPI_RFK_WWAN_SW_ID,
4142 attr, buf, count);
d3a6ade4
HMH		 4143}
4144
4145static struct device_attribute dev_attr_wan_enable =
cc4c24e1 4146 __ATTR(wwan_enable, S_IWUSR | S_IRUGO,
d3a6ade4
HMH		 4147 wan_enable_show, wan_enable_store);
4148
4149/* --------------------------------------------------------------------- */
4150
4151static struct attribute *wan_attributes[] = {
4152 &dev_attr_wan_enable.attr,
4153 NULL
4154};
4155
4156static const struct attribute_group wan_attr_group = {
d3a6ade4
HMH		 4157 .attrs = wan_attributes,
4158};
4159
19d337df
JB		 4160static const struct tpacpi_rfk_ops wan_tprfk_ops = {
4161 .get_status = wan_get_status,
4162 .set_status = wan_set_status,
4163};
0e74dc26 4164
90d9d3c7
HMH		 4165static void wan_shutdown(void)
4166{
4167 /* Order firmware to save current state to NVRAM */
4168 if (!acpi_evalf(NULL, NULL, "\\WGSV", "vd",
4169 TP_ACPI_WGSV_SAVE_STATE))
4170 printk(TPACPI_NOTICE
4171 "failed to save WWAN state to NVRAM\n");
bee4cd9b
HMH		 4172 else
4173 vdbg_printk(TPACPI_DBG_RFKILL,
4174 "WWAN state saved to NVRAM\n");
90d9d3c7
HMH		 4175}
4176
07431ec8
HMH		 4177static void wan_exit(void)
4178{
4179 sysfs_remove_group(&tpacpi_pdev->dev.kobj,
4180 &wan_attr_group);
19d337df
JB		 4181
4182 tpacpi_destroy_rfkill(TPACPI_RFK_WWAN_SW_ID);
4183
4184 wan_shutdown();
07431ec8
HMH		 4185}
4186
a5763f22 4187static int __init wan_init(struct ibm_init_struct *iibm)
42adb53c 4188{
d3a6ade4 4189 int res;
d6fdd1e9
HMH		 4190 int status = 0;
4191
bee4cd9b
HMH		 4192 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL,
4193 "initializing wan subdriver\n");
fe08bc4b 4194
e0c7dfe7 4195 TPACPI_ACPIHANDLE_INIT(hkey);
5fba344c 4196
d8fd94d9 4197 tp_features.wan = hkey_handle &&
d6fdd1e9
HMH		 4198 acpi_evalf(hkey_handle, &status, "GWAN", "qd");
4199
bee4cd9b
HMH		 4200 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL,
4201 "wan is %s, status 0x%02x\n",
d6fdd1e9
HMH		 4202 str_supported(tp_features.wan),
4203 status);
4204
a73f3091
HMH		 4205#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
4206 if (dbg_wwanemul) {
4207 tp_features.wan = 1;
4208 printk(TPACPI_INFO
4209 "wwan switch emulation enabled\n");
4210 } else
4211#endif
3a872080
HMH		 4212 if (tp_features.wan &&
4213 !(status & TP_ACPI_WANCARD_HWPRESENT)) {
4214 /* no wan hardware present in system */
4215 tp_features.wan = 0;
bee4cd9b 4216 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL,
3a872080
HMH		 4217 "wan hardware not installed\n");
4218 }
4219
0e74dc26
HMH		 4220 if (!tp_features.wan)
4221 return 1;
4222
0e74dc26 4223 res = tpacpi_new_rfkill(TPACPI_RFK_WWAN_SW_ID,
19d337df 4224 &wan_tprfk_ops,
0e74dc26 4225 RFKILL_TYPE_WWAN,
bee4cd9b 4226 TPACPI_RFK_WWAN_SW_NAME,
19d337df
JB		 4227 true);
4228 if (res)
4229 return res;
4230
4231 res = sysfs_create_group(&tpacpi_pdev->dev.kobj,
4232 &wan_attr_group);
4233
0e74dc26 4234 if (res) {
19d337df 4235 tpacpi_destroy_rfkill(TPACPI_RFK_WWAN_SW_ID);
0e74dc26 4236 return res;
d6fdd1e9 4237 }
fe08bc4b 4238
0e74dc26 4239 return 0;
42adb53c
JF		 4240}
4241
d3a6ade4 4242/* procfs -------------------------------------------------------------- */
42adb53c
JF		 4243static int wan_read(char *p)
4244{
19d337df 4245 return tpacpi_rfk_procfs_read(TPACPI_RFK_WWAN_SW_ID, p);
42adb53c
JF		 4246}
4247
4248static int wan_write(char *buf)
4249{
19d337df 4250 return tpacpi_rfk_procfs_write(TPACPI_RFK_WWAN_SW_ID, buf);
42adb53c
JF		 4251}
4252
a5763f22
HMH		 4253static struct ibm_struct wan_driver_data = {
4254 .name = "wan",
4255 .read = wan_read,
4256 .write = wan_write,
d3a6ade4 4257 .exit = wan_exit,
90d9d3c7 4258 .shutdown = wan_shutdown,
a5763f22
HMH		 4259};
4260
0045c0aa
HMH		 4261/*************************************************************************
4262 * UWB subdriver
4263 */
4264
4265enum {
4266 /* ACPI GUWB/SUWB bits */
4267 TP_ACPI_UWB_HWPRESENT = 0x01, /* UWB hw available */
4268 TP_ACPI_UWB_RADIOSSW = 0x02, /* UWB radio enabled */
4269};
4270
bee4cd9b
HMH		 4271#define TPACPI_RFK_UWB_SW_NAME "tpacpi_uwb_sw"
4272
19d337df 4273static int uwb_get_status(void)
0045c0aa
HMH		 4274{
4275 int status;
4276
0045c0aa
HMH		 4277#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
4278 if (dbg_uwbemul)
4279 return (tpacpi_uwb_emulstate) ?
19d337df 4280 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF;
0045c0aa
HMH		 4281#endif
4282
4283 if (!acpi_evalf(hkey_handle, &status, "GUWB", "d"))
4284 return -EIO;
4285
4286 return ((status & TP_ACPI_UWB_RADIOSSW) != 0) ?
19d337df 4287 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF;
0045c0aa
HMH		 4288}
4289
19d337df 4290static int uwb_set_status(enum tpacpi_rfkill_state state)
0045c0aa
HMH		 4291{
4292 int status;
4293
bee4cd9b 4294 vdbg_printk(TPACPI_DBG_RFKILL,
19d337df
JB		 4295 "will attempt to %s UWB\n",
4296 (state == TPACPI_RFK_RADIO_ON) ? "enable" : "disable");
bee4cd9b 4297
0045c0aa
HMH		 4298#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
4299 if (dbg_uwbemul) {
19d337df 4300 tpacpi_uwb_emulstate = (state == TPACPI_RFK_RADIO_ON);
0045c0aa
HMH		 4301 return 0;
4302 }
4303#endif
4304
19d337df
JB		 4305 if (state == TPACPI_RFK_RADIO_ON)
4306 status = TP_ACPI_UWB_RADIOSSW;
4307 else
4308 status = 0;
4309
0045c0aa
HMH		 4310 if (!acpi_evalf(hkey_handle, NULL, "SUWB", "vd", status))
4311 return -EIO;
4312
0045c0aa
HMH		 4313 return 0;
4314}
4315
4316/* --------------------------------------------------------------------- */
4317
19d337df
JB		 4318static const struct tpacpi_rfk_ops uwb_tprfk_ops = {
4319 .get_status = uwb_get_status,
4320 .set_status = uwb_set_status,
4321};
0045c0aa
HMH		 4322
4323static void uwb_exit(void)
4324{
19d337df 4325 tpacpi_destroy_rfkill(TPACPI_RFK_UWB_SW_ID);
0045c0aa
HMH		 4326}
4327
4328static int __init uwb_init(struct ibm_init_struct *iibm)
4329{
4330 int res;
4331 int status = 0;
4332
bee4cd9b
HMH		 4333 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL,
4334 "initializing uwb subdriver\n");
0045c0aa
HMH		 4335
4336 TPACPI_ACPIHANDLE_INIT(hkey);
4337
4338 tp_features.uwb = hkey_handle &&
4339 acpi_evalf(hkey_handle, &status, "GUWB", "qd");
4340
bee4cd9b
HMH		 4341 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL,
4342 "uwb is %s, status 0x%02x\n",
0045c0aa
HMH		 4343 str_supported(tp_features.uwb),
4344 status);
4345
4346#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
4347 if (dbg_uwbemul) {
4348 tp_features.uwb = 1;
4349 printk(TPACPI_INFO
4350 "uwb switch emulation enabled\n");
4351 } else
4352#endif
4353 if (tp_features.uwb &&
4354 !(status & TP_ACPI_UWB_HWPRESENT)) {
4355 /* no uwb hardware present in system */
4356 tp_features.uwb = 0;
4357 dbg_printk(TPACPI_DBG_INIT,
4358 "uwb hardware not installed\n");
4359 }
4360
4361 if (!tp_features.uwb)
4362 return 1;
4363
4364 res = tpacpi_new_rfkill(TPACPI_RFK_UWB_SW_ID,
19d337df 4365 &uwb_tprfk_ops,
0045c0aa 4366 RFKILL_TYPE_UWB,
bee4cd9b 4367 TPACPI_RFK_UWB_SW_NAME,
19d337df 4368 false);
0045c0aa
HMH		 4369 return res;
4370}
4371
4372static struct ibm_struct uwb_driver_data = {
4373 .name = "uwb",
4374 .exit = uwb_exit,
4375 .flags.experimental = 1,
4376};
4377
56b6aeb0
HMH		 4378/*************************************************************************
4379 * Video subdriver
4380 */
4381
d7c1d17d
HMH		 4382#ifdef CONFIG_THINKPAD_ACPI_VIDEO
4383
f74a27d4
HMH		 4384enum video_access_mode {
4385 TPACPI_VIDEO_NONE = 0,
4386 TPACPI_VIDEO_570, /* 570 */
4387 TPACPI_VIDEO_770, /* 600e/x, 770e, 770x */
4388 TPACPI_VIDEO_NEW, /* all others */
4389};
4390
4391enum { /* video status flags, based on VIDEO_570 */
4392 TP_ACPI_VIDEO_S_LCD = 0x01, /* LCD output enabled */
4393 TP_ACPI_VIDEO_S_CRT = 0x02, /* CRT output enabled */
4394 TP_ACPI_VIDEO_S_DVI = 0x08, /* DVI output enabled */
4395};
4396
4397enum { /* TPACPI_VIDEO_570 constants */
4398 TP_ACPI_VIDEO_570_PHSCMD = 0x87, /* unknown magic constant :( */
4399 TP_ACPI_VIDEO_570_PHSMASK = 0x03, /* PHS bits that map to
4400 * video_status_flags */
4401 TP_ACPI_VIDEO_570_PHS2CMD = 0x8b, /* unknown magic constant :( */
4402 TP_ACPI_VIDEO_570_PHS2SET = 0x80, /* unknown magic constant :( */
4403};
4404
9a8e1738
HMH		 4405static enum video_access_mode video_supported;
4406static int video_orig_autosw;
78f81cc4 4407
f74a27d4
HMH		 4408static int video_autosw_get(void);
4409static int video_autosw_set(int enable);
4410
e0c7dfe7 4411TPACPI_HANDLE(vid2, root, "\\_SB.PCI0.AGPB.VID"); /* G41 */
56b6aeb0 4412
a5763f22 4413static int __init video_init(struct ibm_init_struct *iibm)
1da177e4 4414{
78f81cc4
BD		 4415 int ivga;
4416
fe08bc4b
HMH		 4417 vdbg_printk(TPACPI_DBG_INIT, "initializing video subdriver\n");
4418
e0c7dfe7
HMH		 4419 TPACPI_ACPIHANDLE_INIT(vid);
4420 TPACPI_ACPIHANDLE_INIT(vid2);
5fba344c 4421
78f81cc4
BD		 4422 if (vid2_handle && acpi_evalf(NULL, &ivga, "\\IVGA", "d") && ivga)
4423 /* G41, assume IVGA doesn't change */
4424 vid_handle = vid2_handle;
4425
4426 if (!vid_handle)
4427 /* video switching not supported on R30, R31 */
efa27145 4428 video_supported = TPACPI_VIDEO_NONE;
78f81cc4
BD		 4429 else if (acpi_evalf(vid_handle, &video_orig_autosw, "SWIT", "qd"))
4430 /* 570 */
efa27145 4431 video_supported = TPACPI_VIDEO_570;
78f81cc4
BD		 4432 else if (acpi_evalf(vid_handle, &video_orig_autosw, "^VADL", "qd"))
4433 /* 600e/x, 770e, 770x */
efa27145 4434 video_supported = TPACPI_VIDEO_770;
78f81cc4
BD		 4435 else
4436 /* all others */
efa27145 4437 video_supported = TPACPI_VIDEO_NEW;
1da177e4 4438
fe08bc4b
HMH		 4439 vdbg_printk(TPACPI_DBG_INIT, "video is %s, mode %d\n",
4440 str_supported(video_supported != TPACPI_VIDEO_NONE),
4441 video_supported);
4442
5fba344c 4443 return (video_supported != TPACPI_VIDEO_NONE)? 0 : 1;
1da177e4
LT		 4444}
4445
56b6aeb0
HMH		 4446static void video_exit(void)
4447{
83f34724
HMH		 4448 dbg_printk(TPACPI_DBG_EXIT,
4449 "restoring original video autoswitch mode\n");
4450 if (video_autosw_set(video_orig_autosw))
e0c7dfe7 4451 printk(TPACPI_ERR "error while trying to restore original "
83f34724 4452 "video autoswitch mode\n");
56b6aeb0
HMH		 4453}
4454
83f34724 4455static int video_outputsw_get(void)
1da177e4
LT		 4456{
4457 int status = 0;
4458 int i;
4459
83f34724
HMH		 4460 switch (video_supported) {
4461 case TPACPI_VIDEO_570:
4462 if (!acpi_evalf(NULL, &i, "\\_SB.PHS", "dd",
4463 TP_ACPI_VIDEO_570_PHSCMD))
4464 return -EIO;
4465 status = i & TP_ACPI_VIDEO_570_PHSMASK;
4466 break;
4467 case TPACPI_VIDEO_770:
4468 if (!acpi_evalf(NULL, &i, "\\VCDL", "d"))
4469 return -EIO;
4470 if (i)
4471 status |= TP_ACPI_VIDEO_S_LCD;
4472 if (!acpi_evalf(NULL, &i, "\\VCDC", "d"))
4473 return -EIO;
4474 if (i)
4475 status |= TP_ACPI_VIDEO_S_CRT;
4476 break;
4477 case TPACPI_VIDEO_NEW:
4478 if (!acpi_evalf(NULL, NULL, "\\VUPS", "vd", 1) ||
4479 !acpi_evalf(NULL, &i, "\\VCDC", "d"))
4480 return -EIO;
4481 if (i)
4482 status |= TP_ACPI_VIDEO_S_CRT;
4483
4484 if (!acpi_evalf(NULL, NULL, "\\VUPS", "vd", 0) ||
4485 !acpi_evalf(NULL, &i, "\\VCDL", "d"))
4486 return -EIO;
4487 if (i)
4488 status |= TP_ACPI_VIDEO_S_LCD;
4489 if (!acpi_evalf(NULL, &i, "\\VCDD", "d"))
4490 return -EIO;
4491 if (i)
4492 status |= TP_ACPI_VIDEO_S_DVI;
4493 break;
4494 default:
4495 return -ENOSYS;
78f81cc4
BD		 4496 }
4497
4498 return status;
4499}
1da177e4 4500
83f34724 4501static int video_outputsw_set(int status)
78f81cc4 4502{
83f34724
HMH		 4503 int autosw;
4504 int res = 0;
4505
4506 switch (video_supported) {
4507 case TPACPI_VIDEO_570:
4508 res = acpi_evalf(NULL, NULL,
4509 "\\_SB.PHS2", "vdd",
4510 TP_ACPI_VIDEO_570_PHS2CMD,
4511 status | TP_ACPI_VIDEO_570_PHS2SET);
4512 break;
4513 case TPACPI_VIDEO_770:
4514 autosw = video_autosw_get();
4515 if (autosw < 0)
4516 return autosw;
1da177e4 4517
83f34724
HMH		 4518 res = video_autosw_set(1);
4519 if (res)
4520 return res;
4521 res = acpi_evalf(vid_handle, NULL,
4522 "ASWT", "vdd", status * 0x100, 0);
4523 if (!autosw && video_autosw_set(autosw)) {
35ff8b9f
HMH		 4524 printk(TPACPI_ERR
4525 "video auto-switch left enabled due to error\n");
83f34724
HMH		 4526 return -EIO;
4527 }
4528 break;
4529 case TPACPI_VIDEO_NEW:
4530 res = acpi_evalf(NULL, NULL, "\\VUPS", "vd", 0x80) &&
35ff8b9f 4531 acpi_evalf(NULL, NULL, "\\VSDS", "vdd", status, 1);
83f34724
HMH		 4532 break;
4533 default:
4534 return -ENOSYS;
4535 }
1da177e4 4536
83f34724 4537 return (res)? 0 : -EIO;
1da177e4
LT		 4538}
4539
83f34724 4540static int video_autosw_get(void)
78f81cc4 4541{
83f34724 4542 int autosw = 0;
78f81cc4 4543
83f34724
HMH		 4544 switch (video_supported) {
4545 case TPACPI_VIDEO_570:
4546 if (!acpi_evalf(vid_handle, &autosw, "SWIT", "d"))
4547 return -EIO;
4548 break;
4549 case TPACPI_VIDEO_770:
4550 case TPACPI_VIDEO_NEW:
4551 if (!acpi_evalf(vid_handle, &autosw, "^VDEE", "d"))
4552 return -EIO;
4553 break;
4554 default:
4555 return -ENOSYS;
4556 }
78f81cc4 4557
83f34724 4558 return autosw & 1;
78f81cc4
BD		 4559}
4560
83f34724 4561static int video_autosw_set(int enable)
78f81cc4 4562{
83f34724
HMH		 4563 if (!acpi_evalf(vid_handle, NULL, "_DOS", "vd", (enable)? 1 : 0))
4564 return -EIO;
4565 return 0;
78f81cc4
BD		 4566}
4567
83f34724 4568static int video_outputsw_cycle(void)
78f81cc4 4569{
83f34724
HMH		 4570 int autosw = video_autosw_get();
4571 int res;
78f81cc4 4572
83f34724
HMH		 4573 if (autosw < 0)
4574 return autosw;
78f81cc4 4575
83f34724
HMH		 4576 switch (video_supported) {
4577 case TPACPI_VIDEO_570:
4578 res = video_autosw_set(1);
4579 if (res)
4580 return res;
4581 res = acpi_evalf(ec_handle, NULL, "_Q16", "v");
4582 break;
4583 case TPACPI_VIDEO_770:
4584 case TPACPI_VIDEO_NEW:
4585 res = video_autosw_set(1);
4586 if (res)
4587 return res;
4588 res = acpi_evalf(vid_handle, NULL, "VSWT", "v");
4589 break;
4590 default:
4591 return -ENOSYS;
4592 }
4593 if (!autosw && video_autosw_set(autosw)) {
35ff8b9f
HMH		 4594 printk(TPACPI_ERR
4595 "video auto-switch left enabled due to error\n");
83f34724 4596 return -EIO;
78f81cc4
BD		 4597 }
4598
83f34724
HMH		 4599 return (res)? 0 : -EIO;
4600}
4601
4602static int video_expand_toggle(void)
4603{
4604 switch (video_supported) {
4605 case TPACPI_VIDEO_570:
4606 return acpi_evalf(ec_handle, NULL, "_Q17", "v")?
4607 0 : -EIO;
4608 case TPACPI_VIDEO_770:
4609 return acpi_evalf(vid_handle, NULL, "VEXP", "v")?
4610 0 : -EIO;
4611 case TPACPI_VIDEO_NEW:
4612 return acpi_evalf(NULL, NULL, "\\VEXP", "v")?
4613 0 : -EIO;
4614 default:
4615 return -ENOSYS;
4616 }
4617 /* not reached */
78f81cc4
BD		 4618}
4619
56b6aeb0
HMH		 4620static int video_read(char *p)
4621{
83f34724 4622 int status, autosw;
56b6aeb0
HMH		 4623 int len = 0;
4624
83f34724 4625 if (video_supported == TPACPI_VIDEO_NONE) {
56b6aeb0
HMH		 4626 len += sprintf(p + len, "status:\t\tnot supported\n");
4627 return len;
4628 }
4629
83f34724
HMH		 4630 status = video_outputsw_get();
4631 if (status < 0)
4632 return status;
4633
4634 autosw = video_autosw_get();
4635 if (autosw < 0)
4636 return autosw;
4637
56b6aeb0
HMH		 4638 len += sprintf(p + len, "status:\t\tsupported\n");
4639 len += sprintf(p + len, "lcd:\t\t%s\n", enabled(status, 0));
4640 len += sprintf(p + len, "crt:\t\t%s\n", enabled(status, 1));
efa27145 4641 if (video_supported == TPACPI_VIDEO_NEW)
56b6aeb0
HMH		 4642 len += sprintf(p + len, "dvi:\t\t%s\n", enabled(status, 3));
4643 len += sprintf(p + len, "auto:\t\t%s\n", enabled(autosw, 0));
4644 len += sprintf(p + len, "commands:\tlcd_enable, lcd_disable\n");
4645 len += sprintf(p + len, "commands:\tcrt_enable, crt_disable\n");
efa27145 4646 if (video_supported == TPACPI_VIDEO_NEW)
56b6aeb0
HMH		 4647 len += sprintf(p + len, "commands:\tdvi_enable, dvi_disable\n");
4648 len += sprintf(p + len, "commands:\tauto_enable, auto_disable\n");
4649 len += sprintf(p + len, "commands:\tvideo_switch, expand_toggle\n");
4650
4651 return len;
4652}
4653
78f81cc4 4654static int video_write(char *buf)
1da177e4
LT		 4655{
4656 char *cmd;
4657 int enable, disable, status;
83f34724 4658 int res;
1da177e4 4659
83f34724 4660 if (video_supported == TPACPI_VIDEO_NONE)
78f81cc4
BD		 4661 return -ENODEV;
4662
83f34724
HMH		 4663 enable = 0;
4664 disable = 0;
1da177e4
LT		 4665
4666 while ((cmd = next_cmd(&buf))) {
4667 if (strlencmp(cmd, "lcd_enable") == 0) {
83f34724 4668 enable |= TP_ACPI_VIDEO_S_LCD;
1da177e4 4669 } else if (strlencmp(cmd, "lcd_disable") == 0) {
83f34724 4670 disable |= TP_ACPI_VIDEO_S_LCD;
1da177e4 4671 } else if (strlencmp(cmd, "crt_enable") == 0) {
83f34724 4672 enable |= TP_ACPI_VIDEO_S_CRT;
1da177e4 4673 } else if (strlencmp(cmd, "crt_disable") == 0) {
83f34724 4674 disable |= TP_ACPI_VIDEO_S_CRT;
efa27145 4675 } else if (video_supported == TPACPI_VIDEO_NEW &&
78f81cc4 4676 strlencmp(cmd, "dvi_enable") == 0) {
83f34724 4677 enable |= TP_ACPI_VIDEO_S_DVI;
efa27145 4678 } else if (video_supported == TPACPI_VIDEO_NEW &&
78f81cc4 4679 strlencmp(cmd, "dvi_disable") == 0) {
83f34724 4680 disable |= TP_ACPI_VIDEO_S_DVI;
1da177e4 4681 } else if (strlencmp(cmd, "auto_enable") == 0) {
83f34724
HMH		 4682 res = video_autosw_set(1);
4683 if (res)
4684 return res;
1da177e4 4685 } else if (strlencmp(cmd, "auto_disable") == 0) {
83f34724
HMH		 4686 res = video_autosw_set(0);
4687 if (res)
4688 return res;
1da177e4 4689 } else if (strlencmp(cmd, "video_switch") == 0) {
83f34724
HMH		 4690 res = video_outputsw_cycle();
4691 if (res)
4692 return res;
1da177e4 4693 } else if (strlencmp(cmd, "expand_toggle") == 0) {
83f34724
HMH		 4694 res = video_expand_toggle();
4695 if (res)
4696 return res;
1da177e4
LT		 4697 } else
4698 return -EINVAL;
4699 }
4700
4701 if (enable || disable) {
83f34724
HMH		 4702 status = video_outputsw_get();
4703 if (status < 0)
4704 return status;
4705 res = video_outputsw_set((status & ~disable) | enable);
4706 if (res)
4707 return res;
1da177e4
LT		 4708 }
4709
4710 return 0;
4711}
4712
a5763f22
HMH		 4713static struct ibm_struct video_driver_data = {
4714 .name = "video",
4715 .read = video_read,
4716 .write = video_write,
4717 .exit = video_exit,
4718};
4719
d7c1d17d
HMH		 4720#endif /* CONFIG_THINKPAD_ACPI_VIDEO */
4721
56b6aeb0
HMH		 4722/*************************************************************************
4723 * Light (thinklight) subdriver
4724 */
1da177e4 4725
e0c7dfe7
HMH		 4726TPACPI_HANDLE(lght, root, "\\LGHT"); /* A21e, A2xm/p, T20-22, X20-21 */
4727TPACPI_HANDLE(ledb, ec, "LEDB"); /* G4x */
56b6aeb0 4728
4fa6811b
HMH		 4729static int light_get_status(void)
4730{
4731 int status = 0;
4732
4733 if (tp_features.light_status) {
4734 if (!acpi_evalf(ec_handle, &status, "KBLT", "d"))
4735 return -EIO;
4736 return (!!status);
4737 }
4738
4739 return -ENXIO;
4740}
4741
4742static int light_set_status(int status)
4743{
4744 int rc;
4745
4746 if (tp_features.light) {
4747 if (cmos_handle) {
4748 rc = acpi_evalf(cmos_handle, NULL, NULL, "vd",
4749 (status)?
4750 TP_CMOS_THINKLIGHT_ON :
4751 TP_CMOS_THINKLIGHT_OFF);
4752 } else {
4753 rc = acpi_evalf(lght_handle, NULL, NULL, "vd",
4754 (status)? 1 : 0);
4755 }
4756 return (rc)? 0 : -EIO;
4757 }
4758
4759 return -ENXIO;
4760}
4761
e306501d
HMH		 4762static void light_set_status_worker(struct work_struct *work)
4763{
4764 struct tpacpi_led_classdev *data =
4765 container_of(work, struct tpacpi_led_classdev, work);
4766
4767 if (likely(tpacpi_lifecycle == TPACPI_LIFE_RUNNING))
75bd3bf2 4768 light_set_status((data->new_state != TPACPI_LED_OFF));
e306501d
HMH		 4769}
4770
4771static void light_sysfs_set(struct led_classdev *led_cdev,
4772 enum led_brightness brightness)
4773{
4774 struct tpacpi_led_classdev *data =
4775 container_of(led_cdev,
4776 struct tpacpi_led_classdev,
4777 led_classdev);
75bd3bf2
HMH		 4778 data->new_state = (brightness != LED_OFF) ?
4779 TPACPI_LED_ON : TPACPI_LED_OFF;
e0e3c061 4780 queue_work(tpacpi_wq, &data->work);
e306501d
HMH		 4781}
4782
4783static enum led_brightness light_sysfs_get(struct led_classdev *led_cdev)
4784{
4785 return (light_get_status() == 1)? LED_FULL : LED_OFF;
4786}
4787
4788static struct tpacpi_led_classdev tpacpi_led_thinklight = {
4789 .led_classdev = {
4790 .name = "tpacpi::thinklight",
4791 .brightness_set = &light_sysfs_set,
4792 .brightness_get = &light_sysfs_get,
4793 }
4794};
4795
a5763f22 4796static int __init light_init(struct ibm_init_struct *iibm)
1da177e4 4797{
9c0a76e1 4798 int rc;
e306501d 4799
fe08bc4b
HMH		 4800 vdbg_printk(TPACPI_DBG_INIT, "initializing light subdriver\n");
4801
e0c7dfe7
HMH		 4802 TPACPI_ACPIHANDLE_INIT(ledb);
4803 TPACPI_ACPIHANDLE_INIT(lght);
4804 TPACPI_ACPIHANDLE_INIT(cmos);
e306501d 4805 INIT_WORK(&tpacpi_led_thinklight.work, light_set_status_worker);
5fba344c 4806
78f81cc4 4807 /* light not supported on 570, 600e/x, 770e, 770x, G4x, R30, R31 */
d8fd94d9 4808 tp_features.light = (cmos_handle || lght_handle) && !ledb_handle;
78f81cc4 4809
d8fd94d9 4810 if (tp_features.light)
78f81cc4
BD		 4811 /* light status not supported on
4812 570, 600e/x, 770e, 770x, G4x, R30, R31, R32, X20 */
d8fd94d9
HMH		 4813 tp_features.light_status =
4814 acpi_evalf(ec_handle, NULL, "KBLT", "qv");
1da177e4 4815
9c0a76e1
HMH		 4816 vdbg_printk(TPACPI_DBG_INIT, "light is %s, light status is %s\n",
4817 str_supported(tp_features.light),
4818 str_supported(tp_features.light_status));
fe08bc4b 4819
9c0a76e1
HMH		 4820 if (!tp_features.light)
4821 return 1;
4822
4823 rc = led_classdev_register(&tpacpi_pdev->dev,
4824 &tpacpi_led_thinklight.led_classdev);
e306501d
HMH		 4825
4826 if (rc < 0) {
4827 tp_features.light = 0;
4828 tp_features.light_status = 0;
9c0a76e1
HMH		 4829 } else {
4830 rc = 0;
e306501d 4831 }
9c0a76e1 4832
e306501d
HMH		 4833 return rc;
4834}
4835
4836static void light_exit(void)
4837{
4838 led_classdev_unregister(&tpacpi_led_thinklight.led_classdev);
4839 if (work_pending(&tpacpi_led_thinklight.work))
e0e3c061 4840 flush_workqueue(tpacpi_wq);
1da177e4
LT		 4841}
4842
78f81cc4 4843static int light_read(char *p)
1da177e4
LT		 4844{
4845 int len = 0;
4fa6811b 4846 int status;
1da177e4 4847
d8fd94d9 4848 if (!tp_features.light) {
78f81cc4 4849 len += sprintf(p + len, "status:\t\tnot supported\n");
d8fd94d9 4850 } else if (!tp_features.light_status) {
78f81cc4
BD		 4851 len += sprintf(p + len, "status:\t\tunknown\n");
4852 len += sprintf(p + len, "commands:\ton, off\n");
4853 } else {
4fa6811b
HMH		 4854 status = light_get_status();
4855 if (status < 0)
4856 return status;
1da177e4 4857 len += sprintf(p + len, "status:\t\t%s\n", onoff(status, 0));
78f81cc4
BD		 4858 len += sprintf(p + len, "commands:\ton, off\n");
4859 }
1da177e4
LT		 4860
4861 return len;
4862}
4863
78f81cc4 4864static int light_write(char *buf)
1da177e4 4865{
1da177e4 4866 char *cmd;
4fa6811b 4867 int newstatus = 0;
78f81cc4 4868
d8fd94d9 4869 if (!tp_features.light)
78f81cc4
BD		 4870 return -ENODEV;
4871
1da177e4
LT		 4872 while ((cmd = next_cmd(&buf))) {
4873 if (strlencmp(cmd, "on") == 0) {
4fa6811b 4874 newstatus = 1;
1da177e4 4875 } else if (strlencmp(cmd, "off") == 0) {
4fa6811b 4876 newstatus = 0;
1da177e4
LT		 4877 } else
4878 return -EINVAL;
1da177e4
LT		 4879 }
4880
4fa6811b 4881 return light_set_status(newstatus);
1da177e4
LT		 4882}
4883
a5763f22
HMH		 4884static struct ibm_struct light_driver_data = {
4885 .name = "light",
4886 .read = light_read,
4887 .write = light_write,
e306501d 4888 .exit = light_exit,
a5763f22
HMH		 4889};
4890
56b6aeb0
HMH		 4891/*************************************************************************
4892 * CMOS subdriver
4893 */
4894
b616004c
HMH		 4895/* sysfs cmos_command -------------------------------------------------- */
4896static ssize_t cmos_command_store(struct device *dev,
4897 struct device_attribute *attr,
4898 const char *buf, size_t count)
4899{
4900 unsigned long cmos_cmd;
4901 int res;
4902
4903 if (parse_strtoul(buf, 21, &cmos_cmd))
4904 return -EINVAL;
4905
4906 res = issue_thinkpad_cmos_command(cmos_cmd);
4907 return (res)? res : count;
4908}
4909
4910static struct device_attribute dev_attr_cmos_command =
4911 __ATTR(cmos_command, S_IWUSR, NULL, cmos_command_store);
4912
4913/* --------------------------------------------------------------------- */
4914
a5763f22 4915static int __init cmos_init(struct ibm_init_struct *iibm)
5fba344c 4916{
b616004c
HMH		 4917 int res;
4918
fe08bc4b
HMH		 4919 vdbg_printk(TPACPI_DBG_INIT,
4920 "initializing cmos commands subdriver\n");
4921
e0c7dfe7 4922 TPACPI_ACPIHANDLE_INIT(cmos);
5fba344c 4923
fe08bc4b
HMH		 4924 vdbg_printk(TPACPI_DBG_INIT, "cmos commands are %s\n",
4925 str_supported(cmos_handle != NULL));
b616004c
HMH		 4926
4927 res = device_create_file(&tpacpi_pdev->dev, &dev_attr_cmos_command);
4928 if (res)
4929 return res;
4930
5fba344c
HMH		 4931 return (cmos_handle)? 0 : 1;
4932}
4933
b616004c
HMH		 4934static void cmos_exit(void)
4935{
4936 device_remove_file(&tpacpi_pdev->dev, &dev_attr_cmos_command);
4937}
4938
78f81cc4 4939static int cmos_read(char *p)
1da177e4
LT		 4940{
4941 int len = 0;
4942
78f81cc4
BD		 4943 /* cmos not supported on 570, 600e/x, 770e, 770x, A21e, A2xm/p,
4944 R30, R31, T20-22, X20-21 */
1da177e4
LT		 4945 if (!cmos_handle)
4946 len += sprintf(p + len, "status:\t\tnot supported\n");
4947 else {
4948 len += sprintf(p + len, "status:\t\tsupported\n");
78f81cc4 4949 len += sprintf(p + len, "commands:\t<cmd> (<cmd> is 0-21)\n");
1da177e4
LT		 4950 }
4951
4952 return len;
4953}
4954
78f81cc4 4955static int cmos_write(char *buf)
1da177e4
LT		 4956{
4957 char *cmd;
c9bea99c 4958 int cmos_cmd, res;
1da177e4
LT		 4959
4960 while ((cmd = next_cmd(&buf))) {
78f81cc4
BD		 4961 if (sscanf(cmd, "%u", &cmos_cmd) == 1 &&
4962 cmos_cmd >= 0 && cmos_cmd <= 21) {
1da177e4
LT		 4963 /* cmos_cmd set */
4964 } else
4965 return -EINVAL;
4966
c9bea99c
HMH		 4967 res = issue_thinkpad_cmos_command(cmos_cmd);
4968 if (res)
4969 return res;
1da177e4
LT		 4970 }
4971
4972 return 0;
78f81cc4
BD		 4973}
4974
a5763f22
HMH		 4975static struct ibm_struct cmos_driver_data = {
4976 .name = "cmos",
4977 .read = cmos_read,
4978 .write = cmos_write,
b616004c 4979 .exit = cmos_exit,
a5763f22 4980};
56b6aeb0
HMH		 4981
4982/*************************************************************************
4983 * LED subdriver
4984 */
4985
f74a27d4
HMH		 4986enum led_access_mode {
4987 TPACPI_LED_NONE = 0,
4988 TPACPI_LED_570, /* 570 */
4989 TPACPI_LED_OLD, /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20-21 */
4990 TPACPI_LED_NEW, /* all others */
4991};
4992
4993enum { /* For TPACPI_LED_OLD */
4994 TPACPI_LED_EC_HLCL = 0x0c, /* EC reg to get led to power on */
4995 TPACPI_LED_EC_HLBL = 0x0d, /* EC reg to blink a lit led */
4996 TPACPI_LED_EC_HLMS = 0x0e, /* EC reg to select led to command */
4997};
4998
9a8e1738 4999static enum led_access_mode led_supported;
78f81cc4 5000
e0c7dfe7 5001TPACPI_HANDLE(led, ec, "SLED", /* 570 */
35ff8b9f
HMH		 5002 "SYSL", /* 600e/x, 770e, 770x, A21e, A2xm/p, */
5003 /* T20-22, X20-21 */
56b6aeb0
HMH		 5004 "LED", /* all others */
5005 ); /* R30, R31 */
5006
f21179a4 5007#define TPACPI_LED_NUMLEDS 16
af116101
HMH		 5008static struct tpacpi_led_classdev *tpacpi_leds;
5009static enum led_status_t tpacpi_led_state_cache[TPACPI_LED_NUMLEDS];
e3aa51fe 5010static const char * const tpacpi_led_names[TPACPI_LED_NUMLEDS] = {
af116101
HMH		 5011 /* there's a limit of 19 chars + NULL before 2.6.26 */
5012 "tpacpi::power",
5013 "tpacpi:orange:batt",
5014 "tpacpi:green:batt",
5015 "tpacpi::dock_active",
5016 "tpacpi::bay_active",
5017 "tpacpi::dock_batt",
5018 "tpacpi::unknown_led",
5019 "tpacpi::standby",
f21179a4
HMH		 5020 "tpacpi::dock_status1",
5021 "tpacpi::dock_status2",
5022 "tpacpi::unknown_led2",
5023 "tpacpi::unknown_led3",
5024 "tpacpi::thinkvantage",
af116101 5025};
f21179a4 5026#define TPACPI_SAFE_LEDS 0x1081U
a4d5effc
HMH		 5027
5028static inline bool tpacpi_is_led_restricted(const unsigned int led)
5029{
5030#ifdef CONFIG_THINKPAD_ACPI_UNSAFE_LEDS
5031 return false;
5032#else
f21179a4 5033 return (1U & (TPACPI_SAFE_LEDS >> led)) == 0;
a4d5effc
HMH		 5034#endif
5035}
af116101 5036
24e45bbe 5037static int led_get_status(const unsigned int led)
4fa6811b
HMH		 5038{
5039 int status;
af116101 5040 enum led_status_t led_s;
4fa6811b
HMH		 5041
5042 switch (led_supported) {
5043 case TPACPI_LED_570:
5044 if (!acpi_evalf(ec_handle,
5045 &status, "GLED", "dd", 1 << led))
5046 return -EIO;
af116101 5047 led_s = (status == 0)?
4fa6811b
HMH		 5048 TPACPI_LED_OFF :
5049 ((status == 1)?
5050 TPACPI_LED_ON :
5051 TPACPI_LED_BLINK);
af116101
HMH		 5052 tpacpi_led_state_cache[led] = led_s;
5053 return led_s;
4fa6811b
HMH		 5054 default:
5055 return -ENXIO;
5056 }
5057
5058 /* not reached */
5059}
5060
24e45bbe
HMH		 5061static int led_set_status(const unsigned int led,
5062 const enum led_status_t ledstatus)
4fa6811b
HMH		 5063{
5064 /* off, on, blink. Index is led_status_t */
24e45bbe
HMH		 5065 static const unsigned int led_sled_arg1[] = { 0, 1, 3 };
5066 static const unsigned int led_led_arg1[] = { 0, 0x80, 0xc0 };
4fa6811b
HMH		 5067
5068 int rc = 0;
5069
5070 switch (led_supported) {
5071 case TPACPI_LED_570:
24e45bbe 5072 /* 570 */
a4d5effc 5073 if (unlikely(led > 7))
24e45bbe 5074 return -EINVAL;
a4d5effc
HMH		 5075 if (unlikely(tpacpi_is_led_restricted(led)))
5076 return -EPERM;
24e45bbe
HMH		 5077 if (!acpi_evalf(led_handle, NULL, NULL, "vdd",
5078 (1 << led), led_sled_arg1[ledstatus]))
5079 rc = -EIO;
5080 break;
4fa6811b 5081 case TPACPI_LED_OLD:
24e45bbe 5082 /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20 */
a4d5effc 5083 if (unlikely(led > 7))
24e45bbe 5084 return -EINVAL;
a4d5effc
HMH		 5085 if (unlikely(tpacpi_is_led_restricted(led)))
5086 return -EPERM;
24e45bbe
HMH		 5087 rc = ec_write(TPACPI_LED_EC_HLMS, (1 << led));
5088 if (rc >= 0)
5089 rc = ec_write(TPACPI_LED_EC_HLBL,
5090 (ledstatus == TPACPI_LED_BLINK) << led);
5091 if (rc >= 0)
5092 rc = ec_write(TPACPI_LED_EC_HLCL,
5093 (ledstatus != TPACPI_LED_OFF) << led);
5094 break;
4fa6811b 5095 case TPACPI_LED_NEW:
24e45bbe 5096 /* all others */
a4d5effc
HMH		 5097 if (unlikely(led >= TPACPI_LED_NUMLEDS))
5098 return -EINVAL;
5099 if (unlikely(tpacpi_is_led_restricted(led)))
5100 return -EPERM;
24e45bbe
HMH		 5101 if (!acpi_evalf(led_handle, NULL, NULL, "vdd",
5102 led, led_led_arg1[ledstatus]))
5103 rc = -EIO;
5104 break;
4fa6811b
HMH		 5105 default:
5106 rc = -ENXIO;
5107 }
5108
af116101
HMH		 5109 if (!rc)
5110 tpacpi_led_state_cache[led] = ledstatus;
5111
5112 return rc;
5113}
5114
af116101
HMH		 5115static void led_set_status_worker(struct work_struct *work)
5116{
5117 struct tpacpi_led_classdev *data =
5118 container_of(work, struct tpacpi_led_classdev, work);
5119
5120 if (likely(tpacpi_lifecycle == TPACPI_LIFE_RUNNING))
75bd3bf2 5121 led_set_status(data->led, data->new_state);
af116101
HMH		 5122}
5123
5124static void led_sysfs_set(struct led_classdev *led_cdev,
5125 enum led_brightness brightness)
5126{
5127 struct tpacpi_led_classdev *data = container_of(led_cdev,
5128 struct tpacpi_led_classdev, led_classdev);
5129
75bd3bf2
HMH		 5130 if (brightness == LED_OFF)
5131 data->new_state = TPACPI_LED_OFF;
5132 else if (tpacpi_led_state_cache[data->led] != TPACPI_LED_BLINK)
5133 data->new_state = TPACPI_LED_ON;
5134 else
5135 data->new_state = TPACPI_LED_BLINK;
5136
e0e3c061 5137 queue_work(tpacpi_wq, &data->work);
af116101
HMH		 5138}
5139
5140static int led_sysfs_blink_set(struct led_classdev *led_cdev,
5141 unsigned long *delay_on, unsigned long *delay_off)
5142{
5143 struct tpacpi_led_classdev *data = container_of(led_cdev,
5144 struct tpacpi_led_classdev, led_classdev);
5145
5146 /* Can we choose the flash rate? */
5147 if (*delay_on == 0 && *delay_off == 0) {
5148 /* yes. set them to the hardware blink rate (1 Hz) */
5149 *delay_on = 500; /* ms */
5150 *delay_off = 500; /* ms */
5151 } else if ((*delay_on != 500) || (*delay_off != 500))
5152 return -EINVAL;
5153
75bd3bf2 5154 data->new_state = TPACPI_LED_BLINK;
e0e3c061 5155 queue_work(tpacpi_wq, &data->work);
af116101
HMH		 5156
5157 return 0;
5158}
5159
5160static enum led_brightness led_sysfs_get(struct led_classdev *led_cdev)
5161{
5162 int rc;
5163
5164 struct tpacpi_led_classdev *data = container_of(led_cdev,
5165 struct tpacpi_led_classdev, led_classdev);
5166
5167 rc = led_get_status(data->led);
5168
5169 if (rc == TPACPI_LED_OFF || rc < 0)
5170 rc = LED_OFF; /* no error handling in led class :( */
5171 else
5172 rc = LED_FULL;
5173
4fa6811b
HMH		 5174 return rc;
5175}
5176
af116101
HMH		 5177static void led_exit(void)
5178{
5179 unsigned int i;
5180
5181 for (i = 0; i < TPACPI_LED_NUMLEDS; i++) {
5182 if (tpacpi_leds[i].led_classdev.name)
5183 led_classdev_unregister(&tpacpi_leds[i].led_classdev);
5184 }
5185
5186 kfree(tpacpi_leds);
af116101
HMH		 5187}
5188
a4d5effc
HMH		 5189static int __init tpacpi_init_led(unsigned int led)
5190{
5191 int rc;
5192
5193 tpacpi_leds[led].led = led;
5194
f21179a4
HMH		 5195 /* LEDs with no name don't get registered */
5196 if (!tpacpi_led_names[led])
5197 return 0;
5198
a4d5effc
HMH		 5199 tpacpi_leds[led].led_classdev.brightness_set = &led_sysfs_set;
5200 tpacpi_leds[led].led_classdev.blink_set = &led_sysfs_blink_set;
5201 if (led_supported == TPACPI_LED_570)
5202 tpacpi_leds[led].led_classdev.brightness_get =
5203 &led_sysfs_get;
5204
5205 tpacpi_leds[led].led_classdev.name = tpacpi_led_names[led];
5206
5207 INIT_WORK(&tpacpi_leds[led].work, led_set_status_worker);
5208
5209 rc = led_classdev_register(&tpacpi_pdev->dev,
5210 &tpacpi_leds[led].led_classdev);
5211 if (rc < 0)
5212 tpacpi_leds[led].led_classdev.name = NULL;
5213
5214 return rc;
5215}
5216
f21179a4
HMH		 5217static const struct tpacpi_quirk led_useful_qtable[] __initconst = {
5218 TPACPI_Q_IBM('1', 'E', 0x009f), /* A30 */
5219 TPACPI_Q_IBM('1', 'N', 0x009f), /* A31 */
5220 TPACPI_Q_IBM('1', 'G', 0x009f), /* A31 */
5221
5222 TPACPI_Q_IBM('1', 'I', 0x0097), /* T30 */
5223 TPACPI_Q_IBM('1', 'R', 0x0097), /* T40, T41, T42, R50, R51 */
5224 TPACPI_Q_IBM('7', '0', 0x0097), /* T43, R52 */
5225 TPACPI_Q_IBM('1', 'Y', 0x0097), /* T43 */
5226 TPACPI_Q_IBM('1', 'W', 0x0097), /* R50e */
5227 TPACPI_Q_IBM('1', 'V', 0x0097), /* R51 */
5228 TPACPI_Q_IBM('7', '8', 0x0097), /* R51e */
5229 TPACPI_Q_IBM('7', '6', 0x0097), /* R52 */
5230
5231 TPACPI_Q_IBM('1', 'K', 0x00bf), /* X30 */
5232 TPACPI_Q_IBM('1', 'Q', 0x00bf), /* X31, X32 */
5233 TPACPI_Q_IBM('1', 'U', 0x00bf), /* X40 */
5234 TPACPI_Q_IBM('7', '4', 0x00bf), /* X41 */
5235 TPACPI_Q_IBM('7', '5', 0x00bf), /* X41t */
5236
5237 TPACPI_Q_IBM('7', '9', 0x1f97), /* T60 (1) */
5238 TPACPI_Q_IBM('7', '7', 0x1f97), /* Z60* (1) */
5239 TPACPI_Q_IBM('7', 'F', 0x1f97), /* Z61* (1) */
5240 TPACPI_Q_IBM('7', 'B', 0x1fb7), /* X60 (1) */
5241
5242 /* (1) - may have excess leds enabled on MSB */
5243
5244 /* Defaults (order matters, keep last, don't reorder!) */
5245 { /* Lenovo */
5246 .vendor = PCI_VENDOR_ID_LENOVO,
5247 .bios = TPACPI_MATCH_ANY, .ec = TPACPI_MATCH_ANY,
5248 .quirks = 0x1fffU,
5249 },
5250 { /* IBM ThinkPads with no EC version string */
5251 .vendor = PCI_VENDOR_ID_IBM,
5252 .bios = TPACPI_MATCH_ANY, .ec = TPACPI_MATCH_UNKNOWN,
5253 .quirks = 0x00ffU,
5254 },
5255 { /* IBM ThinkPads with EC version string */
5256 .vendor = PCI_VENDOR_ID_IBM,
5257 .bios = TPACPI_MATCH_ANY, .ec = TPACPI_MATCH_ANY,
5258 .quirks = 0x00bfU,
5259 },
5260};
5261
5262#undef TPACPI_LEDQ_IBM
5263#undef TPACPI_LEDQ_LNV
5264
a5763f22 5265static int __init led_init(struct ibm_init_struct *iibm)
78f81cc4 5266{
af116101
HMH		 5267 unsigned int i;
5268 int rc;
f21179a4 5269 unsigned long useful_leds;
af116101 5270
fe08bc4b
HMH		 5271 vdbg_printk(TPACPI_DBG_INIT, "initializing LED subdriver\n");
5272
e0c7dfe7 5273 TPACPI_ACPIHANDLE_INIT(led);
5fba344c 5274
78f81cc4
BD		 5275 if (!led_handle)
5276 /* led not supported on R30, R31 */
efa27145 5277 led_supported = TPACPI_LED_NONE;
78f81cc4
BD		 5278 else if (strlencmp(led_path, "SLED") == 0)
5279 /* 570 */
efa27145 5280 led_supported = TPACPI_LED_570;
78f81cc4
BD		 5281 else if (strlencmp(led_path, "SYSL") == 0)
5282 /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20-21 */
efa27145 5283 led_supported = TPACPI_LED_OLD;
78f81cc4
BD		 5284 else
5285 /* all others */
efa27145 5286 led_supported = TPACPI_LED_NEW;
78f81cc4 5287
fe08bc4b
HMH		 5288 vdbg_printk(TPACPI_DBG_INIT, "LED commands are %s, mode %d\n",
5289 str_supported(led_supported), led_supported);
5290
f21179a4
HMH		 5291 if (led_supported == TPACPI_LED_NONE)
5292 return 1;
5293
af116101
HMH		 5294 tpacpi_leds = kzalloc(sizeof(*tpacpi_leds) * TPACPI_LED_NUMLEDS,
5295 GFP_KERNEL);
5296 if (!tpacpi_leds) {
5297 printk(TPACPI_ERR "Out of memory for LED data\n");
5298 return -ENOMEM;
5299 }
5300
f21179a4
HMH		 5301 useful_leds = tpacpi_check_quirks(led_useful_qtable,
5302 ARRAY_SIZE(led_useful_qtable));
5303
af116101 5304 for (i = 0; i < TPACPI_LED_NUMLEDS; i++) {
f21179a4
HMH		 5305 if (!tpacpi_is_led_restricted(i) &&
5306 test_bit(i, &useful_leds)) {
a4d5effc
HMH		 5307 rc = tpacpi_init_led(i);
5308 if (rc < 0) {
5309 led_exit();
5310 return rc;
5311 }
af116101
HMH		 5312 }
5313 }
5314
a4d5effc 5315#ifdef CONFIG_THINKPAD_ACPI_UNSAFE_LEDS
f21179a4
HMH		 5316 printk(TPACPI_NOTICE
5317 "warning: userspace override of important "
5318 "firmware LEDs is enabled\n");
a4d5effc 5319#endif
f21179a4 5320 return 0;
78f81cc4
BD		 5321}
5322
4fa6811b
HMH		 5323#define str_led_status(s) \
5324 ((s) == TPACPI_LED_OFF ? "off" : \
5325 ((s) == TPACPI_LED_ON ? "on" : "blinking"))
78f81cc4
BD		 5326
5327static int led_read(char *p)
1da177e4
LT		 5328{
5329 int len = 0;
5330
78f81cc4
BD		 5331 if (!led_supported) {
5332 len += sprintf(p + len, "status:\t\tnot supported\n");
5333 return len;
5334 }
5335 len += sprintf(p + len, "status:\t\tsupported\n");
5336
efa27145 5337 if (led_supported == TPACPI_LED_570) {
78f81cc4
BD		 5338 /* 570 */
5339 int i, status;
5340 for (i = 0; i < 8; i++) {
4fa6811b
HMH		 5341 status = led_get_status(i);
5342 if (status < 0)
78f81cc4
BD		 5343 return -EIO;
5344 len += sprintf(p + len, "%d:\t\t%s\n",
4fa6811b 5345 i, str_led_status(status));
78f81cc4
BD		 5346 }
5347 }
5348
1da177e4 5349 len += sprintf(p + len, "commands:\t"
f21179a4 5350 "<led> on, <led> off, <led> blink (<led> is 0-15)\n");
1da177e4
LT		 5351
5352 return len;
5353}
5354
78f81cc4 5355static int led_write(char *buf)
1da177e4
LT		 5356{
5357 char *cmd;
4fa6811b
HMH		 5358 int led, rc;
5359 enum led_status_t s;
78f81cc4
BD		 5360
5361 if (!led_supported)
5362 return -ENODEV;
1da177e4
LT		 5363
5364 while ((cmd = next_cmd(&buf))) {
f21179a4 5365 if (sscanf(cmd, "%d", &led) != 1 || led < 0 || led > 15)
1da177e4
LT		 5366 return -EINVAL;
5367
78f81cc4 5368 if (strstr(cmd, "off")) {
4fa6811b 5369 s = TPACPI_LED_OFF;
1da177e4 5370 } else if (strstr(cmd, "on")) {
4fa6811b 5371 s = TPACPI_LED_ON;
78f81cc4 5372 } else if (strstr(cmd, "blink")) {
4fa6811b 5373 s = TPACPI_LED_BLINK;
78f81cc4 5374 } else {
4fa6811b 5375 return -EINVAL;
78f81cc4 5376 }
4fa6811b
HMH		 5377
5378 rc = led_set_status(led, s);
5379 if (rc < 0)
5380 return rc;
78f81cc4
BD		 5381 }
5382
5383 return 0;
5384}
5385
a5763f22
HMH		 5386static struct ibm_struct led_driver_data = {
5387 .name = "led",
5388 .read = led_read,
5389 .write = led_write,
af116101 5390 .exit = led_exit,
a5763f22
HMH		 5391};
5392
56b6aeb0
HMH		 5393/*************************************************************************
5394 * Beep subdriver
5395 */
5396
e0c7dfe7 5397TPACPI_HANDLE(beep, ec, "BEEP"); /* all except R30, R31 */
56b6aeb0 5398
60201732
HMH		 5399#define TPACPI_BEEP_Q1 0x0001
5400
5401static const struct tpacpi_quirk beep_quirk_table[] __initconst = {
5402 TPACPI_Q_IBM('I', 'M', TPACPI_BEEP_Q1), /* 570 */
5403 TPACPI_Q_IBM('I', 'U', TPACPI_BEEP_Q1), /* 570E - unverified */
5404};
5405
a5763f22 5406static int __init beep_init(struct ibm_init_struct *iibm)
5fba344c 5407{
60201732
HMH		 5408 unsigned long quirks;
5409
fe08bc4b
HMH		 5410 vdbg_printk(TPACPI_DBG_INIT, "initializing beep subdriver\n");
5411
e0c7dfe7 5412 TPACPI_ACPIHANDLE_INIT(beep);
5fba344c 5413
fe08bc4b
HMH		 5414 vdbg_printk(TPACPI_DBG_INIT, "beep is %s\n",
5415 str_supported(beep_handle != NULL));
5416
60201732
HMH		 5417 quirks = tpacpi_check_quirks(beep_quirk_table,
5418 ARRAY_SIZE(beep_quirk_table));
5419
5420 tp_features.beep_needs_two_args = !!(quirks & TPACPI_BEEP_Q1);
5421
5fba344c
HMH		 5422 return (beep_handle)? 0 : 1;
5423}
5424
78f81cc4
BD		 5425static int beep_read(char *p)
5426{
5427 int len = 0;
5428
5429 if (!beep_handle)
5430 len += sprintf(p + len, "status:\t\tnot supported\n");
5431 else {
5432 len += sprintf(p + len, "status:\t\tsupported\n");
5433 len += sprintf(p + len, "commands:\t<cmd> (<cmd> is 0-17)\n");
5434 }
5435
5436 return len;
5437}
5438
5439static int beep_write(char *buf)
5440{
5441 char *cmd;
5442 int beep_cmd;
5443
5444 if (!beep_handle)
5445 return -ENODEV;
5446
5447 while ((cmd = next_cmd(&buf))) {
5448 if (sscanf(cmd, "%u", &beep_cmd) == 1 &&
5449 beep_cmd >= 0 && beep_cmd <= 17) {
5450 /* beep_cmd set */
5451 } else
5452 return -EINVAL;
60201732
HMH		 5453 if (tp_features.beep_needs_two_args) {
5454 if (!acpi_evalf(beep_handle, NULL, NULL, "vdd",
5455 beep_cmd, 0))
5456 return -EIO;
5457 } else {
5458 if (!acpi_evalf(beep_handle, NULL, NULL, "vd",
5459 beep_cmd))
5460 return -EIO;
5461 }
78f81cc4
BD		 5462 }
5463
5464 return 0;
5465}
5466
a5763f22
HMH		 5467static struct ibm_struct beep_driver_data = {
5468 .name = "beep",
5469 .read = beep_read,
5470 .write = beep_write,
5471};
5472
56b6aeb0
HMH		 5473/*************************************************************************
5474 * Thermal subdriver
5475 */
78f81cc4 5476
f74a27d4
HMH		 5477enum thermal_access_mode {
5478 TPACPI_THERMAL_NONE = 0, /* No thermal support */
5479 TPACPI_THERMAL_ACPI_TMP07, /* Use ACPI TMP0-7 */
5480 TPACPI_THERMAL_ACPI_UPDT, /* Use ACPI TMP0-7 with UPDT */
5481 TPACPI_THERMAL_TPEC_8, /* Use ACPI EC regs, 8 sensors */
5482 TPACPI_THERMAL_TPEC_16, /* Use ACPI EC regs, 16 sensors */
5483};
5484
5485enum { /* TPACPI_THERMAL_TPEC_* */
5486 TP_EC_THERMAL_TMP0 = 0x78, /* ACPI EC regs TMP 0..7 */
5487 TP_EC_THERMAL_TMP8 = 0xC0, /* ACPI EC regs TMP 8..15 */
5488 TP_EC_THERMAL_TMP_NA = -128, /* ACPI EC sensor not available */
9ebd9e83
HMH		 5489
5490 TPACPI_THERMAL_SENSOR_NA = -128000, /* Sensor not available */
f74a27d4
HMH		 5491};
5492
9ebd9e83 5493
f74a27d4
HMH		 5494#define TPACPI_MAX_THERMAL_SENSORS 16 /* Max thermal sensors supported */
5495struct ibm_thermal_sensors_struct {
5496 s32 temp[TPACPI_MAX_THERMAL_SENSORS];
5497};
5498
a26f878a 5499static enum thermal_access_mode thermal_read_mode;
78f81cc4 5500
b21a15f6
HMH		 5501/* idx is zero-based */
5502static int thermal_get_sensor(int idx, s32 *value)
5503{
5504 int t;
5505 s8 tmp;
5506 char tmpi[5];
5507
5508 t = TP_EC_THERMAL_TMP0;
5509
5510 switch (thermal_read_mode) {
5511#if TPACPI_MAX_THERMAL_SENSORS >= 16
5512 case TPACPI_THERMAL_TPEC_16:
5513 if (idx >= 8 && idx <= 15) {
5514 t = TP_EC_THERMAL_TMP8;
5515 idx -= 8;
5516 }
5517 /* fallthrough */
5518#endif
5519 case TPACPI_THERMAL_TPEC_8:
5520 if (idx <= 7) {
5521 if (!acpi_ec_read(t + idx, &tmp))
5522 return -EIO;
5523 *value = tmp * 1000;
5524 return 0;
5525 }
5526 break;
5527
5528 case TPACPI_THERMAL_ACPI_UPDT:
5529 if (idx <= 7) {
5530 snprintf(tmpi, sizeof(tmpi), "TMP%c", '0' + idx);
5531 if (!acpi_evalf(ec_handle, NULL, "UPDT", "v"))
5532 return -EIO;
5533 if (!acpi_evalf(ec_handle, &t, tmpi, "d"))
5534 return -EIO;
5535 *value = (t - 2732) * 100;
5536 return 0;
5537 }
5538 break;
5539
5540 case TPACPI_THERMAL_ACPI_TMP07:
5541 if (idx <= 7) {
5542 snprintf(tmpi, sizeof(tmpi), "TMP%c", '0' + idx);
5543 if (!acpi_evalf(ec_handle, &t, tmpi, "d"))
5544 return -EIO;
5545 if (t > 127 || t < -127)
5546 t = TP_EC_THERMAL_TMP_NA;
5547 *value = t * 1000;
5548 return 0;
5549 }
5550 break;
5551
5552 case TPACPI_THERMAL_NONE:
5553 default:
5554 return -ENOSYS;
5555 }
5556
5557 return -EINVAL;
5558}
5559
5560static int thermal_get_sensors(struct ibm_thermal_sensors_struct *s)
5561{
5562 int res, i;
5563 int n;
5564
5565 n = 8;
5566 i = 0;
5567
5568 if (!s)
5569 return -EINVAL;
5570
5571 if (thermal_read_mode == TPACPI_THERMAL_TPEC_16)
5572 n = 16;
5573
35ff8b9f 5574 for (i = 0 ; i < n; i++) {
b21a15f6
HMH		 5575 res = thermal_get_sensor(i, &s->temp[i]);
5576 if (res)
5577 return res;
5578 }
5579
5580 return n;
5581}
f74a27d4 5582
9ebd9e83
HMH		 5583static void thermal_dump_all_sensors(void)
5584{
5585 int n, i;
5586 struct ibm_thermal_sensors_struct t;
5587
5588 n = thermal_get_sensors(&t);
5589 if (n <= 0)
5590 return;
5591
5592 printk(TPACPI_NOTICE
5593 "temperatures (Celsius):");
5594
5595 for (i = 0; i < n; i++) {
5596 if (t.temp[i] != TPACPI_THERMAL_SENSOR_NA)
5597 printk(KERN_CONT " %d", (int)(t.temp[i] / 1000));
5598 else
5599 printk(KERN_CONT " N/A");
5600 }
5601
5602 printk(KERN_CONT "\n");
5603}
5604
2c37aa4e
HMH		 5605/* sysfs temp##_input -------------------------------------------------- */
5606
5607static ssize_t thermal_temp_input_show(struct device *dev,
5608 struct device_attribute *attr,
5609 char *buf)
5610{
5611 struct sensor_device_attribute *sensor_attr =
5612 to_sensor_dev_attr(attr);
5613 int idx = sensor_attr->index;
5614 s32 value;
5615 int res;
5616
5617 res = thermal_get_sensor(idx, &value);
5618 if (res)
5619 return res;
9ebd9e83 5620 if (value == TPACPI_THERMAL_SENSOR_NA)
2c37aa4e
HMH		 5621 return -ENXIO;
5622
5623 return snprintf(buf, PAGE_SIZE, "%d\n", value);
5624}
5625
5626#define THERMAL_SENSOR_ATTR_TEMP(_idxA, _idxB) \
35ff8b9f
HMH		 5627 SENSOR_ATTR(temp##_idxA##_input, S_IRUGO, \
5628 thermal_temp_input_show, NULL, _idxB)
2c37aa4e
HMH		 5629
5630static struct sensor_device_attribute sensor_dev_attr_thermal_temp_input[] = {
5631 THERMAL_SENSOR_ATTR_TEMP(1, 0),
5632 THERMAL_SENSOR_ATTR_TEMP(2, 1),
5633 THERMAL_SENSOR_ATTR_TEMP(3, 2),
5634 THERMAL_SENSOR_ATTR_TEMP(4, 3),
5635 THERMAL_SENSOR_ATTR_TEMP(5, 4),
5636 THERMAL_SENSOR_ATTR_TEMP(6, 5),
5637 THERMAL_SENSOR_ATTR_TEMP(7, 6),
5638 THERMAL_SENSOR_ATTR_TEMP(8, 7),
5639 THERMAL_SENSOR_ATTR_TEMP(9, 8),
5640 THERMAL_SENSOR_ATTR_TEMP(10, 9),
5641 THERMAL_SENSOR_ATTR_TEMP(11, 10),
5642 THERMAL_SENSOR_ATTR_TEMP(12, 11),
5643 THERMAL_SENSOR_ATTR_TEMP(13, 12),
5644 THERMAL_SENSOR_ATTR_TEMP(14, 13),
5645 THERMAL_SENSOR_ATTR_TEMP(15, 14),
5646 THERMAL_SENSOR_ATTR_TEMP(16, 15),
5647};
5648
5649#define THERMAL_ATTRS(X) \
5650 &sensor_dev_attr_thermal_temp_input[X].dev_attr.attr
5651
5652static struct attribute *thermal_temp_input_attr[] = {
5653 THERMAL_ATTRS(8),
5654 THERMAL_ATTRS(9),
5655 THERMAL_ATTRS(10),
5656 THERMAL_ATTRS(11),
5657 THERMAL_ATTRS(12),
5658 THERMAL_ATTRS(13),
5659 THERMAL_ATTRS(14),
5660 THERMAL_ATTRS(15),
5661 THERMAL_ATTRS(0),
5662 THERMAL_ATTRS(1),
5663 THERMAL_ATTRS(2),
5664 THERMAL_ATTRS(3),
5665 THERMAL_ATTRS(4),
5666 THERMAL_ATTRS(5),
5667 THERMAL_ATTRS(6),
5668 THERMAL_ATTRS(7),
5669 NULL
5670};
5671
5672static const struct attribute_group thermal_temp_input16_group = {
5673 .attrs = thermal_temp_input_attr
5674};
5675
5676static const struct attribute_group thermal_temp_input8_group = {
5677 .attrs = &thermal_temp_input_attr[8]
5678};
5679
5680#undef THERMAL_SENSOR_ATTR_TEMP
5681#undef THERMAL_ATTRS
5682
5683/* --------------------------------------------------------------------- */
5684
a5763f22 5685static int __init thermal_init(struct ibm_init_struct *iibm)
78f81cc4 5686{
60eb0b35
HMH		 5687 u8 t, ta1, ta2;
5688 int i;
5fba344c 5689 int acpi_tmp7;
2c37aa4e 5690 int res;
5fba344c 5691
fe08bc4b
HMH		 5692 vdbg_printk(TPACPI_DBG_INIT, "initializing thermal subdriver\n");
5693
5fba344c 5694 acpi_tmp7 = acpi_evalf(ec_handle, NULL, "TMP7", "qv");
60eb0b35 5695
3d6f99ca 5696 if (thinkpad_id.ec_model) {
60eb0b35
HMH		 5697 /*
5698 * Direct EC access mode: sensors at registers
5699 * 0x78-0x7F, 0xC0-0xC7. Registers return 0x00 for
5700 * non-implemented, thermal sensors return 0x80 when
5701 * not available
5702 */
78f81cc4 5703
60eb0b35
HMH		 5704 ta1 = ta2 = 0;
5705 for (i = 0; i < 8; i++) {
04cc862c 5706 if (acpi_ec_read(TP_EC_THERMAL_TMP0 + i, &t)) {
60eb0b35
HMH		 5707 ta1 |= t;
5708 } else {
5709 ta1 = 0;
5710 break;
5711 }
04cc862c 5712 if (acpi_ec_read(TP_EC_THERMAL_TMP8 + i, &t)) {
60eb0b35
HMH		 5713 ta2 |= t;
5714 } else {
5715 ta1 = 0;
5716 break;
5717 }
5718 }
5719 if (ta1 == 0) {
5720 /* This is sheer paranoia, but we handle it anyway */
5721 if (acpi_tmp7) {
e0c7dfe7 5722 printk(TPACPI_ERR
60eb0b35 5723 "ThinkPad ACPI EC access misbehaving, "
35ff8b9f
HMH		 5724 "falling back to ACPI TMPx access "
5725 "mode\n");
efa27145 5726 thermal_read_mode = TPACPI_THERMAL_ACPI_TMP07;
60eb0b35 5727 } else {
e0c7dfe7 5728 printk(TPACPI_ERR
60eb0b35
HMH		 5729 "ThinkPad ACPI EC access misbehaving, "
5730 "disabling thermal sensors access\n");
efa27145 5731 thermal_read_mode = TPACPI_THERMAL_NONE;
60eb0b35
HMH		 5732 }
5733 } else {
5734 thermal_read_mode =
5735 (ta2 != 0) ?
efa27145 5736 TPACPI_THERMAL_TPEC_16 : TPACPI_THERMAL_TPEC_8;
60eb0b35
HMH		 5737 }
5738 } else if (acpi_tmp7) {
a26f878a
HMH		 5739 if (acpi_evalf(ec_handle, NULL, "UPDT", "qv")) {
5740 /* 600e/x, 770e, 770x */
efa27145 5741 thermal_read_mode = TPACPI_THERMAL_ACPI_UPDT;
a26f878a
HMH		 5742 } else {
5743 /* Standard ACPI TMPx access, max 8 sensors */
efa27145 5744 thermal_read_mode = TPACPI_THERMAL_ACPI_TMP07;
a26f878a
HMH		 5745 }
5746 } else {
5747 /* temperatures not supported on 570, G4x, R30, R31, R32 */
efa27145 5748 thermal_read_mode = TPACPI_THERMAL_NONE;
a26f878a 5749 }
78f81cc4 5750
fe08bc4b
HMH		 5751 vdbg_printk(TPACPI_DBG_INIT, "thermal is %s, mode %d\n",
5752 str_supported(thermal_read_mode != TPACPI_THERMAL_NONE),
5753 thermal_read_mode);
5754
35ff8b9f 5755 switch (thermal_read_mode) {
2c37aa4e 5756 case TPACPI_THERMAL_TPEC_16:
7fd40029 5757 res = sysfs_create_group(&tpacpi_sensors_pdev->dev.kobj,
2c37aa4e
HMH		 5758 &thermal_temp_input16_group);
5759 if (res)
5760 return res;
5761 break;
5762 case TPACPI_THERMAL_TPEC_8:
5763 case TPACPI_THERMAL_ACPI_TMP07:
5764 case TPACPI_THERMAL_ACPI_UPDT:
7fd40029 5765 res = sysfs_create_group(&tpacpi_sensors_pdev->dev.kobj,
2c37aa4e
HMH		 5766 &thermal_temp_input8_group);
5767 if (res)
5768 return res;
5769 break;
5770 case TPACPI_THERMAL_NONE:
5771 default:
5772 return 1;
5773 }
5774
5775 return 0;
5776}
5777
5778static void thermal_exit(void)
5779{
35ff8b9f 5780 switch (thermal_read_mode) {
2c37aa4e 5781 case TPACPI_THERMAL_TPEC_16:
7fd40029 5782 sysfs_remove_group(&tpacpi_sensors_pdev->dev.kobj,
2c37aa4e
HMH		 5783 &thermal_temp_input16_group);
5784 break;
5785 case TPACPI_THERMAL_TPEC_8:
5786 case TPACPI_THERMAL_ACPI_TMP07:
5787 case TPACPI_THERMAL_ACPI_UPDT:
7fd40029 5788 sysfs_remove_group(&tpacpi_sensors_pdev->dev.kobj,
2c37aa4e
HMH		 5789 &thermal_temp_input16_group);
5790 break;
5791 case TPACPI_THERMAL_NONE:
5792 default:
5793 break;
5794 }
78f81cc4
BD		 5795}
5796
a26f878a
HMH		 5797static int thermal_read(char *p)
5798{
5799 int len = 0;
5800 int n, i;
5801 struct ibm_thermal_sensors_struct t;
5802
5803 n = thermal_get_sensors(&t);
5804 if (unlikely(n < 0))
5805 return n;
5806
5807 len += sprintf(p + len, "temperatures:\t");
5808
5809 if (n > 0) {
5810 for (i = 0; i < (n - 1); i++)
5811 len += sprintf(p + len, "%d ", t.temp[i] / 1000);
5812 len += sprintf(p + len, "%d\n", t.temp[i] / 1000);
5813 } else
5814 len += sprintf(p + len, "not supported\n");
78f81cc4
BD		 5815
5816 return len;
5817}
5818
a5763f22
HMH		 5819static struct ibm_struct thermal_driver_data = {
5820 .name = "thermal",
5821 .read = thermal_read,
2c37aa4e 5822 .exit = thermal_exit,
a5763f22
HMH		 5823};
5824
56b6aeb0
HMH		 5825/*************************************************************************
5826 * EC Dump subdriver
5827 */
5828
78f81cc4
BD		 5829static u8 ecdump_regs[256];
5830
5831static int ecdump_read(char *p)
5832{
5833 int len = 0;
5834 int i, j;
5835 u8 v;
5836
5837 len += sprintf(p + len, "EC "
5838 " +00 +01 +02 +03 +04 +05 +06 +07"
5839 " +08 +09 +0a +0b +0c +0d +0e +0f\n");
5840 for (i = 0; i < 256; i += 16) {
5841 len += sprintf(p + len, "EC 0x%02x:", i);
5842 for (j = 0; j < 16; j++) {
5843 if (!acpi_ec_read(i + j, &v))
5844 break;
5845 if (v != ecdump_regs[i + j])
5846 len += sprintf(p + len, " *%02x", v);
5847 else
5848 len += sprintf(p + len, " %02x", v);
5849 ecdump_regs[i + j] = v;
5850 }
5851 len += sprintf(p + len, "\n");
5852 if (j != 16)
5853 break;
5854 }
5855
5856 /* These are way too dangerous to advertise openly... */
5857#if 0
5858 len += sprintf(p + len, "commands:\t0x<offset> 0x<value>"
5859 " (<offset> is 00-ff, <value> is 00-ff)\n");
5860 len += sprintf(p + len, "commands:\t0x<offset> <value> "
5861 " (<offset> is 00-ff, <value> is 0-255)\n");
5862#endif
5863 return len;
5864}
5865
5866static int ecdump_write(char *buf)
5867{
5868 char *cmd;
5869 int i, v;
5870
5871 while ((cmd = next_cmd(&buf))) {
5872 if (sscanf(cmd, "0x%x 0x%x", &i, &v) == 2) {
5873 /* i and v set */
5874 } else if (sscanf(cmd, "0x%x %u", &i, &v) == 2) {
5875 /* i and v set */
5876 } else
5877 return -EINVAL;
5878 if (i >= 0 && i < 256 && v >= 0 && v < 256) {
5879 if (!acpi_ec_write(i, v))
1da177e4
LT		 5880 return -EIO;
5881 } else
5882 return -EINVAL;
5883 }
5884
5885 return 0;
78f81cc4
BD		 5886}
5887
a5763f22
HMH		 5888static struct ibm_struct ecdump_driver_data = {
5889 .name = "ecdump",
5890 .read = ecdump_read,
5891 .write = ecdump_write,
92641177 5892 .flags.experimental = 1,
a5763f22
HMH		 5893};
5894
56b6aeb0
HMH		 5895/*************************************************************************
5896 * Backlight/brightness subdriver
5897 */
5898
f74a27d4
HMH		 5899#define TPACPI_BACKLIGHT_DEV_NAME "thinkpad_screen"
5900
0e501834
HMH		 5901/*
5902 * ThinkPads can read brightness from two places: EC HBRV (0x31), or
5903 * CMOS NVRAM byte 0x5E, bits 0-3.
5904 *
5905 * EC HBRV (0x31) has the following layout
5906 * Bit 7: unknown function
5907 * Bit 6: unknown function
5908 * Bit 5: Z: honour scale changes, NZ: ignore scale changes
5909 * Bit 4: must be set to zero to avoid problems
5910 * Bit 3-0: backlight brightness level
5911 *
5912 * brightness_get_raw returns status data in the HBRV layout
d7880f10
HMH		 5913 *
5914 * WARNING: The X61 has been verified to use HBRV for something else, so
5915 * this should be used _only_ on IBM ThinkPads, and maybe with some careful
5916 * testing on the very early *60 Lenovo models...
0e501834
HMH		 5917 */
5918
e11aecf1
HMH		 5919enum {
5920 TP_EC_BACKLIGHT = 0x31,
5921
5922 /* TP_EC_BACKLIGHT bitmasks */
5923 TP_EC_BACKLIGHT_LVLMSK = 0x1F,
5924 TP_EC_BACKLIGHT_CMDMSK = 0xE0,
5925 TP_EC_BACKLIGHT_MAPSW = 0x20,
5926};
5927
0e501834
HMH		 5928enum tpacpi_brightness_access_mode {
5929 TPACPI_BRGHT_MODE_AUTO = 0, /* Not implemented yet */
5930 TPACPI_BRGHT_MODE_EC, /* EC control */
5931 TPACPI_BRGHT_MODE_UCMS_STEP, /* UCMS step-based control */
5932 TPACPI_BRGHT_MODE_ECNVRAM, /* EC control w/ NVRAM store */
5933 TPACPI_BRGHT_MODE_MAX
5934};
5935
94954cc6 5936static struct backlight_device *ibm_backlight_device;
0e501834
HMH		 5937
5938static enum tpacpi_brightness_access_mode brightness_mode =
5939 TPACPI_BRGHT_MODE_MAX;
5940
f74a27d4
HMH		 5941static unsigned int brightness_enable = 2; /* 2 = auto, 0 = no, 1 = yes */
5942
b21a15f6 5943static struct mutex brightness_mutex;
56b6aeb0 5944
0e501834
HMH		 5945/* NVRAM brightness access,
5946 * call with brightness_mutex held! */
5947static unsigned int tpacpi_brightness_nvram_get(void)
b21a15f6 5948{
0e501834 5949 u8 lnvram;
b21a15f6 5950
0e501834
HMH		 5951 lnvram = (nvram_read_byte(TP_NVRAM_ADDR_BRIGHTNESS)
5952 & TP_NVRAM_MASK_LEVEL_BRIGHTNESS)
5953 >> TP_NVRAM_POS_LEVEL_BRIGHTNESS;
5954 lnvram &= (tp_features.bright_16levels) ? 0x0f : 0x07;
5955
5956 return lnvram;
5957}
5958
5959static void tpacpi_brightness_checkpoint_nvram(void)
5960{
5961 u8 lec = 0;
5962 u8 b_nvram;
5963
5964 if (brightness_mode != TPACPI_BRGHT_MODE_ECNVRAM)
5965 return;
5966
5967 vdbg_printk(TPACPI_DBG_BRGHT,
5968 "trying to checkpoint backlight level to NVRAM...\n");
5969
5970 if (mutex_lock_killable(&brightness_mutex) < 0)
5971 return;
5972
5973 if (unlikely(!acpi_ec_read(TP_EC_BACKLIGHT, &lec)))
5974 goto unlock;
5975 lec &= TP_EC_BACKLIGHT_LVLMSK;
5976 b_nvram = nvram_read_byte(TP_NVRAM_ADDR_BRIGHTNESS);
5977
5978 if (lec != ((b_nvram & TP_NVRAM_MASK_LEVEL_BRIGHTNESS)
5979 >> TP_NVRAM_POS_LEVEL_BRIGHTNESS)) {
5980 /* NVRAM needs update */
5981 b_nvram &= ~(TP_NVRAM_MASK_LEVEL_BRIGHTNESS <<
5982 TP_NVRAM_POS_LEVEL_BRIGHTNESS);
5983 b_nvram |= lec;
5984 nvram_write_byte(b_nvram, TP_NVRAM_ADDR_BRIGHTNESS);
5985 dbg_printk(TPACPI_DBG_BRGHT,
5986 "updated NVRAM backlight level to %u (0x%02x)\n",
5987 (unsigned int) lec, (unsigned int) b_nvram);
5988 } else
5989 vdbg_printk(TPACPI_DBG_BRGHT,
5990 "NVRAM backlight level already is %u (0x%02x)\n",
5991 (unsigned int) lec, (unsigned int) b_nvram);
5992
5993unlock:
5994 mutex_unlock(&brightness_mutex);
5995}
5996
5997
5998/* call with brightness_mutex held! */
5999static int tpacpi_brightness_get_raw(int *status)
6000{
6001 u8 lec = 0;
6002
6003 switch (brightness_mode) {
6004 case TPACPI_BRGHT_MODE_UCMS_STEP:
6005 *status = tpacpi_brightness_nvram_get();
6006 return 0;
6007 case TPACPI_BRGHT_MODE_EC:
6008 case TPACPI_BRGHT_MODE_ECNVRAM:
6009 if (unlikely(!acpi_ec_read(TP_EC_BACKLIGHT, &lec)))
2d5e94d7 6010 return -EIO;
0e501834
HMH		 6011 *status = lec;
6012 return 0;
6013 default:
6014 return -ENXIO;
b21a15f6 6015 }
0e501834
HMH		 6016}
6017
6018/* call with brightness_mutex held! */
6019/* do NOT call with illegal backlight level value */
6020static int tpacpi_brightness_set_ec(unsigned int value)
6021{
6022 u8 lec = 0;
6023
6024 if (unlikely(!acpi_ec_read(TP_EC_BACKLIGHT, &lec)))
6025 return -EIO;
6026
6027 if (unlikely(!acpi_ec_write(TP_EC_BACKLIGHT,
6028 (lec & TP_EC_BACKLIGHT_CMDMSK) |
6029 (value & TP_EC_BACKLIGHT_LVLMSK))))
6030 return -EIO;
6031
6032 return 0;
6033}
6034
6035/* call with brightness_mutex held! */
6036static int tpacpi_brightness_set_ucmsstep(unsigned int value)
6037{
6038 int cmos_cmd, inc;
6039 unsigned int current_value, i;
6040
6041 current_value = tpacpi_brightness_nvram_get();
6042
6043 if (value == current_value)
6044 return 0;
6045
6046 cmos_cmd = (value > current_value) ?
6047 TP_CMOS_BRIGHTNESS_UP :
6048 TP_CMOS_BRIGHTNESS_DOWN;
6049 inc = (value > current_value) ? 1 : -1;
6050
6051 for (i = current_value; i != value; i += inc)
6052 if (issue_thinkpad_cmos_command(cmos_cmd))
6053 return -EIO;
b21a15f6 6054
e11aecf1 6055 return 0;
b21a15f6
HMH		 6056}
6057
6058/* May return EINTR which can always be mapped to ERESTARTSYS */
0e501834 6059static int brightness_set(unsigned int value)
b21a15f6 6060{
0e501834 6061 int res;
b21a15f6 6062
e11aecf1
HMH		 6063 if (value > ((tp_features.bright_16levels)? 15 : 7) ||
6064 value < 0)
b21a15f6
HMH		 6065 return -EINVAL;
6066
0e501834
HMH		 6067 vdbg_printk(TPACPI_DBG_BRGHT,
6068 "set backlight level to %d\n", value);
6069
7646ea88 6070 res = mutex_lock_killable(&brightness_mutex);
b21a15f6
HMH		 6071 if (res < 0)
6072 return res;
6073
0e501834
HMH		 6074 switch (brightness_mode) {
6075 case TPACPI_BRGHT_MODE_EC:
6076 case TPACPI_BRGHT_MODE_ECNVRAM:
6077 res = tpacpi_brightness_set_ec(value);
6078 break;
6079 case TPACPI_BRGHT_MODE_UCMS_STEP:
6080 res = tpacpi_brightness_set_ucmsstep(value);
6081 break;
6082 default:
6083 res = -ENXIO;
b21a15f6
HMH		 6084 }
6085
b21a15f6
HMH		 6086 mutex_unlock(&brightness_mutex);
6087 return res;
6088}
6089
6090/* sysfs backlight class ----------------------------------------------- */
6091
6092static int brightness_update_status(struct backlight_device *bd)
6093{
0e501834 6094 unsigned int level =
b21a15f6
HMH		 6095 (bd->props.fb_blank == FB_BLANK_UNBLANK &&
6096 bd->props.power == FB_BLANK_UNBLANK) ?
0e501834
HMH		 6097 bd->props.brightness : 0;
6098
6099 dbg_printk(TPACPI_DBG_BRGHT,
6100 "backlight: attempt to set level to %d\n",
6101 level);
6102
6103 /* it is the backlight class's job (caller) to handle
6104 * EINTR and other errors properly */
6105 return brightness_set(level);
b21a15f6
HMH		 6106}
6107
e11aecf1 6108static int brightness_get(struct backlight_device *bd)
a3f104c0 6109{
e11aecf1 6110 int status, res;
a3f104c0 6111
0e501834 6112 res = mutex_lock_killable(&brightness_mutex);
e11aecf1 6113 if (res < 0)
0e501834
HMH		 6114 return 0;
6115
6116 res = tpacpi_brightness_get_raw(&status);
6117
6118 mutex_unlock(&brightness_mutex);
6119
6120 if (res < 0)
6121 return 0;
e11e211a 6122
e11aecf1 6123 return status & TP_EC_BACKLIGHT_LVLMSK;
e11e211a
HMH		 6124}
6125
347a2686
HMH		 6126static void tpacpi_brightness_notify_change(void)
6127{
6128 backlight_force_update(ibm_backlight_device,
6129 BACKLIGHT_UPDATE_HOTKEY);
6130}
6131
b21a15f6 6132static struct backlight_ops ibm_backlight_data = {
35ff8b9f
HMH		 6133 .get_brightness = brightness_get,
6134 .update_status = brightness_update_status,
56b6aeb0 6135};
e11e211a 6136
b21a15f6 6137/* --------------------------------------------------------------------- */
e11e211a 6138
59fe4fe3
HMH		 6139/*
6140 * These are only useful for models that have only one possibility
6141 * of GPU. If the BIOS model handles both ATI and Intel, don't use
6142 * these quirks.
6143 */
6144#define TPACPI_BRGHT_Q_NOEC 0x0001 /* Must NOT use EC HBRV */
6145#define TPACPI_BRGHT_Q_EC 0x0002 /* Should or must use EC HBRV */
6146#define TPACPI_BRGHT_Q_ASK 0x8000 /* Ask for user report */
6147
6148static const struct tpacpi_quirk brightness_quirk_table[] __initconst = {
6149 /* Models with ATI GPUs known to require ECNVRAM mode */
6150 TPACPI_Q_IBM('1', 'Y', TPACPI_BRGHT_Q_EC), /* T43/p ATI */
6151
6da25bf5
HMH		 6152 /* Models with ATI GPUs that can use ECNVRAM */
6153 TPACPI_Q_IBM('1', 'R', TPACPI_BRGHT_Q_EC),
59fe4fe3
HMH		 6154 TPACPI_Q_IBM('1', 'Q', TPACPI_BRGHT_Q_ASK|TPACPI_BRGHT_Q_EC),
6155 TPACPI_Q_IBM('7', '6', TPACPI_BRGHT_Q_ASK|TPACPI_BRGHT_Q_EC),
6156 TPACPI_Q_IBM('7', '8', TPACPI_BRGHT_Q_ASK|TPACPI_BRGHT_Q_EC),
6157
6da25bf5
HMH		 6158 /* Models with Intel Extreme Graphics 2 */
6159 TPACPI_Q_IBM('1', 'U', TPACPI_BRGHT_Q_NOEC),
a9f8eacc
HMH		 6160 TPACPI_Q_IBM('1', 'V', TPACPI_BRGHT_Q_ASK|TPACPI_BRGHT_Q_EC),
6161 TPACPI_Q_IBM('1', 'W', TPACPI_BRGHT_Q_ASK|TPACPI_BRGHT_Q_EC),
59fe4fe3
HMH		 6162
6163 /* Models with Intel GMA900 */
6164 TPACPI_Q_IBM('7', '0', TPACPI_BRGHT_Q_NOEC), /* T43, R52 */
6165 TPACPI_Q_IBM('7', '4', TPACPI_BRGHT_Q_NOEC), /* X41 */
6166 TPACPI_Q_IBM('7', '5', TPACPI_BRGHT_Q_NOEC), /* X41 Tablet */
6167};
6168
a5763f22 6169static int __init brightness_init(struct ibm_init_struct *iibm)
56b6aeb0
HMH		 6170{
6171 int b;
59fe4fe3 6172 unsigned long quirks;
56b6aeb0 6173
fe08bc4b
HMH		 6174 vdbg_printk(TPACPI_DBG_INIT, "initializing brightness subdriver\n");
6175
f432255e
HMH		 6176 mutex_init(&brightness_mutex);
6177
59fe4fe3
HMH		 6178 quirks = tpacpi_check_quirks(brightness_quirk_table,
6179 ARRAY_SIZE(brightness_quirk_table));
6180
b5972796
HMH		 6181 /*
6182 * We always attempt to detect acpi support, so as to switch
6183 * Lenovo Vista BIOS to ACPI brightness mode even if we are not
6184 * going to publish a backlight interface
6185 */
6186 b = tpacpi_check_std_acpi_brightness_support();
6187 if (b > 0) {
2dba1b5d
TR		 6188
6189 if (acpi_video_backlight_support()) {
6190 if (brightness_enable > 1) {
6191 printk(TPACPI_NOTICE
6192 "Standard ACPI backlight interface "
6193 "available, not loading native one.\n");
6194 return 1;
6195 } else if (brightness_enable == 1) {
6196 printk(TPACPI_NOTICE
6197 "Backlight control force enabled, even if standard "
6198 "ACPI backlight interface is available\n");
6199 }
6200 } else {
6201 if (brightness_enable > 1) {
6202 printk(TPACPI_NOTICE
6203 "Standard ACPI backlight interface not "
6204 "available, thinkpad_acpi native "
6205 "brightness control enabled\n");
6206 }
e11e211a 6207 }
87cc537a
HMH		 6208 }
6209
b5972796 6210 if (!brightness_enable) {
0e501834 6211 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_BRGHT,
b5972796
HMH		 6212 "brightness support disabled by "
6213 "module parameter\n");
6214 return 1;
6215 }
6216
6217 if (b > 16) {
6218 printk(TPACPI_ERR
6219 "Unsupported brightness interface, "
6220 "please contact %s\n", TPACPI_MAIL);
6221 return 1;
6222 }
6223 if (b == 16)
6224 tp_features.bright_16levels = 1;
6225
0e501834
HMH		 6226 /*
6227 * Check for module parameter bogosity, note that we
6228 * init brightness_mode to TPACPI_BRGHT_MODE_MAX in order to be
6229 * able to detect "unspecified"
6230 */
6231 if (brightness_mode > TPACPI_BRGHT_MODE_MAX)
6232 return -EINVAL;
24d3b774 6233
0e501834
HMH		 6234 /* TPACPI_BRGHT_MODE_AUTO not implemented yet, just use default */
6235 if (brightness_mode == TPACPI_BRGHT_MODE_AUTO ||
6236 brightness_mode == TPACPI_BRGHT_MODE_MAX) {
59fe4fe3
HMH		 6237 if (quirks & TPACPI_BRGHT_Q_EC)
6238 brightness_mode = TPACPI_BRGHT_MODE_ECNVRAM;
6239 else
0e501834 6240 brightness_mode = TPACPI_BRGHT_MODE_UCMS_STEP;
24d3b774 6241
0e501834 6242 dbg_printk(TPACPI_DBG_BRGHT,
59fe4fe3 6243 "driver auto-selected brightness_mode=%d\n",
0e501834
HMH		 6244 brightness_mode);
6245 }
24d3b774 6246
d7880f10
HMH		 6247 /* Safety */
6248 if (thinkpad_id.vendor != PCI_VENDOR_ID_IBM &&
6249 (brightness_mode == TPACPI_BRGHT_MODE_ECNVRAM ||
6250 brightness_mode == TPACPI_BRGHT_MODE_EC))
6251 return -EINVAL;
6252
0e501834 6253 if (tpacpi_brightness_get_raw(&b) < 0)
24d3b774 6254 return 1;
56b6aeb0 6255
a3f104c0 6256 if (tp_features.bright_16levels)
35ff8b9f
HMH		 6257 printk(TPACPI_INFO
6258 "detected a 16-level brightness capable ThinkPad\n");
a3f104c0 6259
7d5a015e
HMH		 6260 ibm_backlight_device = backlight_device_register(
6261 TPACPI_BACKLIGHT_DEV_NAME, NULL, NULL,
6262 &ibm_backlight_data);
56b6aeb0 6263 if (IS_ERR(ibm_backlight_device)) {
435c47e2
HMH		 6264 int rc = PTR_ERR(ibm_backlight_device);
6265 ibm_backlight_device = NULL;
e0c7dfe7 6266 printk(TPACPI_ERR "Could not register backlight device\n");
435c47e2 6267 return rc;
56b6aeb0 6268 }
0e501834
HMH		 6269 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_BRGHT,
6270 "brightness is supported\n");
56b6aeb0 6271
59fe4fe3
HMH		 6272 if (quirks & TPACPI_BRGHT_Q_ASK) {
6273 printk(TPACPI_NOTICE
6274 "brightness: will use unverified default: "
6275 "brightness_mode=%d\n", brightness_mode);
6276 printk(TPACPI_NOTICE
6277 "brightness: please report to %s whether it works well "
6278 "or not on your ThinkPad\n", TPACPI_MAIL);
6279 }
6280
a3f104c0
HMH		 6281 ibm_backlight_device->props.max_brightness =
6282 (tp_features.bright_16levels)? 15 : 7;
e11aecf1 6283 ibm_backlight_device->props.brightness = b & TP_EC_BACKLIGHT_LVLMSK;
56b6aeb0
HMH		 6284 backlight_update_status(ibm_backlight_device);
6285
347a2686
HMH		 6286 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_BRGHT,
6287 "brightness: registering brightness hotkeys "
6288 "as change notification\n");
6289 tpacpi_hotkey_driver_mask_set(hotkey_driver_mask
6290 | TP_ACPI_HKEY_BRGHTUP_MASK
6291 | TP_ACPI_HKEY_BRGHTDWN_MASK);;
56b6aeb0
HMH		 6292 return 0;
6293}
6294
0e501834
HMH		 6295static void brightness_suspend(pm_message_t state)
6296{
6297 tpacpi_brightness_checkpoint_nvram();
6298}
6299
6300static void brightness_shutdown(void)
6301{
6302 tpacpi_brightness_checkpoint_nvram();
6303}
6304
56b6aeb0
HMH		 6305static void brightness_exit(void)
6306{
6307 if (ibm_backlight_device) {
0e501834 6308 vdbg_printk(TPACPI_DBG_EXIT | TPACPI_DBG_BRGHT,
fe08bc4b 6309 "calling backlight_device_unregister()\n");
56b6aeb0 6310 backlight_device_unregister(ibm_backlight_device);
56b6aeb0 6311 }
0e501834
HMH		 6312
6313 tpacpi_brightness_checkpoint_nvram();
56b6aeb0
HMH		 6314}
6315
56b6aeb0
HMH		 6316static int brightness_read(char *p)
6317{
6318 int len = 0;
6319 int level;
6320
35ff8b9f
HMH		 6321 level = brightness_get(NULL);
6322 if (level < 0) {
56b6aeb0
HMH		 6323 len += sprintf(p + len, "level:\t\tunreadable\n");
6324 } else {
a3f104c0 6325 len += sprintf(p + len, "level:\t\t%d\n", level);
56b6aeb0
HMH		 6326 len += sprintf(p + len, "commands:\tup, down\n");
6327 len += sprintf(p + len, "commands:\tlevel <level>"
a3f104c0
HMH		 6328 " (<level> is 0-%d)\n",
6329 (tp_features.bright_16levels) ? 15 : 7);
56b6aeb0
HMH		 6330 }
6331
6332 return len;
6333}
6334
8acb0250
HM		 6335static int brightness_write(char *buf)
6336{
6337 int level;
4273af8d 6338 int rc;
1da177e4 6339 char *cmd;
a3f104c0 6340 int max_level = (tp_features.bright_16levels) ? 15 : 7;
1da177e4 6341
4273af8d
HMH		 6342 level = brightness_get(NULL);
6343 if (level < 0)
6344 return level;
78f81cc4 6345
4273af8d 6346 while ((cmd = next_cmd(&buf))) {
78f81cc4 6347 if (strlencmp(cmd, "up") == 0) {
4273af8d
HMH		 6348 if (level < max_level)
6349 level++;
78f81cc4 6350 } else if (strlencmp(cmd, "down") == 0) {
4273af8d
HMH		 6351 if (level > 0)
6352 level--;
6353 } else if (sscanf(cmd, "level %d", &level) == 1 &&
6354 level >= 0 && level <= max_level) {
6355 /* new level set */
78f81cc4
BD		 6356 } else
6357 return -EINVAL;
78f81cc4
BD		 6358 }
6359
0e501834
HMH		 6360 tpacpi_disclose_usertask("procfs brightness",
6361 "set level to %d\n", level);
6362
4273af8d
HMH		 6363 /*
6364 * Now we know what the final level should be, so we try to set it.
6365 * Doing it this way makes the syscall restartable in case of EINTR
6366 */
6367 rc = brightness_set(level);
347a2686
HMH		 6368 if (!rc && ibm_backlight_device)
6369 backlight_force_update(ibm_backlight_device,
6370 BACKLIGHT_UPDATE_SYSFS);
80a8d122 6371 return (rc == -EINTR)? -ERESTARTSYS : rc;
78f81cc4
BD		 6372}
6373
a5763f22
HMH		 6374static struct ibm_struct brightness_driver_data = {
6375 .name = "brightness",
6376 .read = brightness_read,
6377 .write = brightness_write,
6378 .exit = brightness_exit,
0e501834
HMH		 6379 .suspend = brightness_suspend,
6380 .shutdown = brightness_shutdown,
a5763f22
HMH		 6381};
6382
56b6aeb0
HMH		 6383/*************************************************************************
6384 * Volume subdriver
6385 */
fb87a811 6386
329e4e18
HMH		 6387/*
6388 * IBM ThinkPads have a simple volume controller with MUTE gating.
6389 * Very early Lenovo ThinkPads follow the IBM ThinkPad spec.
6390 *
6391 * Since the *61 series (and probably also the later *60 series), Lenovo
6392 * ThinkPads only implement the MUTE gate.
6393 *
6394 * EC register 0x30
6395 * Bit 6: MUTE (1 mutes sound)
6396 * Bit 3-0: Volume
6397 * Other bits should be zero as far as we know.
6398 *
6399 * This is also stored in CMOS NVRAM, byte 0x60, bit 6 (MUTE), and
6400 * bits 3-0 (volume). Other bits in NVRAM may have other functions,
6401 * such as bit 7 which is used to detect repeated presses of MUTE,
6402 * and we leave them unchanged.
6403 */
6404
6405enum {
6406 TP_EC_AUDIO = 0x30,
6407
6408 /* TP_EC_AUDIO bits */
6409 TP_EC_AUDIO_MUTESW = 6,
6410
6411 /* TP_EC_AUDIO bitmasks */
6412 TP_EC_AUDIO_LVL_MSK = 0x0F,
6413 TP_EC_AUDIO_MUTESW_MSK = (1 << TP_EC_AUDIO_MUTESW),
6414
6415 /* Maximum volume */
6416 TP_EC_VOLUME_MAX = 14,
6417};
6418
6419enum tpacpi_volume_access_mode {
6420 TPACPI_VOL_MODE_AUTO = 0, /* Not implemented yet */
6421 TPACPI_VOL_MODE_EC, /* Pure EC control */
6422 TPACPI_VOL_MODE_UCMS_STEP, /* UCMS step-based control: N/A */
6423 TPACPI_VOL_MODE_ECNVRAM, /* EC control w/ NVRAM store */
6424 TPACPI_VOL_MODE_MAX
6425};
6426
a112ceee
HMH		 6427enum tpacpi_volume_capabilities {
6428 TPACPI_VOL_CAP_AUTO = 0, /* Use white/blacklist */
6429 TPACPI_VOL_CAP_VOLMUTE, /* Output vol and mute */
6430 TPACPI_VOL_CAP_MUTEONLY, /* Output mute only */
6431 TPACPI_VOL_CAP_MAX
6432};
6433
329e4e18
HMH		 6434static enum tpacpi_volume_access_mode volume_mode =
6435 TPACPI_VOL_MODE_MAX;
6436
a112ceee 6437static enum tpacpi_volume_capabilities volume_capabilities;
c7ac6291 6438static int volume_control_allowed;
329e4e18
HMH		 6439
6440/*
6441 * Used to syncronize writers to TP_EC_AUDIO and
6442 * TP_NVRAM_ADDR_MIXER, as we need to do read-modify-write
6443 */
6444static struct mutex volume_mutex;
6445
6446static void tpacpi_volume_checkpoint_nvram(void)
6447{
6448 u8 lec = 0;
6449 u8 b_nvram;
a112ceee 6450 u8 ec_mask;
329e4e18
HMH		 6451
6452 if (volume_mode != TPACPI_VOL_MODE_ECNVRAM)
6453 return;
c7ac6291
HMH		 6454 if (!volume_control_allowed)
6455 return;
329e4e18
HMH		 6456
6457 vdbg_printk(TPACPI_DBG_MIXER,
6458 "trying to checkpoint mixer state to NVRAM...\n");
6459
a112ceee
HMH		 6460 if (tp_features.mixer_no_level_control)
6461 ec_mask = TP_EC_AUDIO_MUTESW_MSK;
6462 else
6463 ec_mask = TP_EC_AUDIO_MUTESW_MSK | TP_EC_AUDIO_LVL_MSK;
6464
329e4e18
HMH		 6465 if (mutex_lock_killable(&volume_mutex) < 0)
6466 return;
6467
6468 if (unlikely(!acpi_ec_read(TP_EC_AUDIO, &lec)))
6469 goto unlock;
6470 lec &= ec_mask;
6471 b_nvram = nvram_read_byte(TP_NVRAM_ADDR_MIXER);
6472
6473 if (lec != (b_nvram & ec_mask)) {
6474 /* NVRAM needs update */
6475 b_nvram &= ~ec_mask;
6476 b_nvram |= lec;
6477 nvram_write_byte(b_nvram, TP_NVRAM_ADDR_MIXER);
6478 dbg_printk(TPACPI_DBG_MIXER,
6479 "updated NVRAM mixer status to 0x%02x (0x%02x)\n",
6480 (unsigned int) lec, (unsigned int) b_nvram);
6481 } else {
6482 vdbg_printk(TPACPI_DBG_MIXER,
6483 "NVRAM mixer status already is 0x%02x (0x%02x)\n",
6484 (unsigned int) lec, (unsigned int) b_nvram);
6485 }
6486
6487unlock:
6488 mutex_unlock(&volume_mutex);
6489}
6490
6491static int volume_get_status_ec(u8 *status)
6492{
6493 u8 s;
6494
6495 if (!acpi_ec_read(TP_EC_AUDIO, &s))
6496 return -EIO;
6497
6498 *status = s;
6499
6500 dbg_printk(TPACPI_DBG_MIXER, "status 0x%02x\n", s);
6501
6502 return 0;
6503}
6504
6505static int volume_get_status(u8 *status)
6506{
6507 return volume_get_status_ec(status);
6508}
6509
6510static int volume_set_status_ec(const u8 status)
6511{
6512 if (!acpi_ec_write(TP_EC_AUDIO, status))
6513 return -EIO;
6514
6515 dbg_printk(TPACPI_DBG_MIXER, "set EC mixer to 0x%02x\n", status);
6516
6517 return 0;
6518}
6519
6520static int volume_set_status(const u8 status)
6521{
6522 return volume_set_status_ec(status);
6523}
6524
6525static int volume_set_mute_ec(const bool mute)
6526{
6527 int rc;
6528 u8 s, n;
6529
6530 if (mutex_lock_killable(&volume_mutex) < 0)
6531 return -EINTR;
6532
6533 rc = volume_get_status_ec(&s);
6534 if (rc)
6535 goto unlock;
6536
6537 n = (mute) ? s | TP_EC_AUDIO_MUTESW_MSK :
6538 s & ~TP_EC_AUDIO_MUTESW_MSK;
6539
6540 if (n != s)
6541 rc = volume_set_status_ec(n);
6542
6543unlock:
6544 mutex_unlock(&volume_mutex);
6545 return rc;
6546}
6547
6548static int volume_set_mute(const bool mute)
6549{
6550 dbg_printk(TPACPI_DBG_MIXER, "trying to %smute\n",
6551 (mute) ? "" : "un");
6552 return volume_set_mute_ec(mute);
6553}
6554
6555static int volume_set_volume_ec(const u8 vol)
6556{
6557 int rc;
6558 u8 s, n;
6559
6560 if (vol > TP_EC_VOLUME_MAX)
6561 return -EINVAL;
6562
6563 if (mutex_lock_killable(&volume_mutex) < 0)
6564 return -EINTR;
6565
6566 rc = volume_get_status_ec(&s);
6567 if (rc)
6568 goto unlock;
6569
6570 n = (s & ~TP_EC_AUDIO_LVL_MSK) | vol;
6571
6572 if (n != s)
6573 rc = volume_set_status_ec(n);
6574
6575unlock:
6576 mutex_unlock(&volume_mutex);
6577 return rc;
6578}
6579
6580static int volume_set_volume(const u8 vol)
6581{
6582 dbg_printk(TPACPI_DBG_MIXER,
6583 "trying to set volume level to %hu\n", vol);
6584 return volume_set_volume_ec(vol);
6585}
6586
6587static void volume_suspend(pm_message_t state)
6588{
6589 tpacpi_volume_checkpoint_nvram();
6590}
6591
6592static void volume_shutdown(void)
6593{
6594 tpacpi_volume_checkpoint_nvram();
6595}
6596
6597static void volume_exit(void)
6598{
6599 tpacpi_volume_checkpoint_nvram();
6600}
6601
a112ceee
HMH		 6602#define TPACPI_VOL_Q_MUTEONLY 0x0001 /* Mute-only control available */
6603#define TPACPI_VOL_Q_LEVEL 0x0002 /* Volume control available */
6604
6605static const struct tpacpi_quirk volume_quirk_table[] __initconst = {
6606 /* Whitelist volume level on all IBM by default */
6607 { .vendor = PCI_VENDOR_ID_IBM,
6608 .bios = TPACPI_MATCH_ANY,
6609 .ec = TPACPI_MATCH_ANY,
6610 .quirks = TPACPI_VOL_Q_LEVEL },
6611
6612 /* Lenovo models with volume control (needs confirmation) */
6613 TPACPI_QEC_LNV('7', 'C', TPACPI_VOL_Q_LEVEL), /* R60/i */
6614 TPACPI_QEC_LNV('7', 'E', TPACPI_VOL_Q_LEVEL), /* R60e/i */
6615 TPACPI_QEC_LNV('7', '9', TPACPI_VOL_Q_LEVEL), /* T60/p */
6616 TPACPI_QEC_LNV('7', 'B', TPACPI_VOL_Q_LEVEL), /* X60/s */
6617 TPACPI_QEC_LNV('7', 'J', TPACPI_VOL_Q_LEVEL), /* X60t */
6618 TPACPI_QEC_LNV('7', '7', TPACPI_VOL_Q_LEVEL), /* Z60 */
6619 TPACPI_QEC_LNV('7', 'F', TPACPI_VOL_Q_LEVEL), /* Z61 */
6620
6621 /* Whitelist mute-only on all Lenovo by default */
6622 { .vendor = PCI_VENDOR_ID_LENOVO,
6623 .bios = TPACPI_MATCH_ANY,
6624 .ec = TPACPI_MATCH_ANY,
6625 .quirks = TPACPI_VOL_Q_MUTEONLY }
6626};
6627
329e4e18
HMH		 6628static int __init volume_init(struct ibm_init_struct *iibm)
6629{
a112ceee
HMH		 6630 unsigned long quirks;
6631
329e4e18
HMH		 6632 vdbg_printk(TPACPI_DBG_INIT, "initializing volume subdriver\n");
6633
6634 mutex_init(&volume_mutex);
6635
6636 /*
6637 * Check for module parameter bogosity, note that we
6638 * init volume_mode to TPACPI_VOL_MODE_MAX in order to be
6639 * able to detect "unspecified"
6640 */
6641 if (volume_mode > TPACPI_VOL_MODE_MAX)
6642 return -EINVAL;
6643
6644 if (volume_mode == TPACPI_VOL_MODE_UCMS_STEP) {
6645 printk(TPACPI_ERR
6646 "UCMS step volume mode not implemented, "
6647 "please contact %s\n", TPACPI_MAIL);
6648 return 1;
6649 }
6650
a112ceee
HMH		 6651 if (volume_capabilities >= TPACPI_VOL_CAP_MAX)
6652 return -EINVAL;
6653
6654 quirks = tpacpi_check_quirks(volume_quirk_table,
6655 ARRAY_SIZE(volume_quirk_table));
6656
6657 switch (volume_capabilities) {
6658 case TPACPI_VOL_CAP_AUTO:
6659 if (quirks & TPACPI_VOL_Q_MUTEONLY)
6660 tp_features.mixer_no_level_control = 1;
6661 else if (quirks & TPACPI_VOL_Q_LEVEL)
6662 tp_features.mixer_no_level_control = 0;
6663 else
6664 return 1; /* no mixer */
6665 break;
6666 case TPACPI_VOL_CAP_VOLMUTE:
6667 tp_features.mixer_no_level_control = 0;
6668 break;
6669 case TPACPI_VOL_CAP_MUTEONLY:
6670 tp_features.mixer_no_level_control = 1;
6671 break;
6672 default:
6673 return 1;
6674 }
6675
6676 if (volume_capabilities != TPACPI_VOL_CAP_AUTO)
6677 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER,
6678 "using user-supplied volume_capabilities=%d\n",
6679 volume_capabilities);
6680
329e4e18
HMH		 6681 if (volume_mode == TPACPI_VOL_MODE_AUTO ||
6682 volume_mode == TPACPI_VOL_MODE_MAX) {
6683 volume_mode = TPACPI_VOL_MODE_ECNVRAM;
6684
6685 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER,
6686 "driver auto-selected volume_mode=%d\n",
6687 volume_mode);
6688 } else {
6689 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER,
6690 "using user-supplied volume_mode=%d\n",
6691 volume_mode);
6692 }
6693
6694 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER,
a112ceee
HMH		 6695 "mute is supported, volume control is %s\n",
6696 str_supported(!tp_features.mixer_no_level_control));
329e4e18 6697
c7ac6291
HMH		 6698 printk(TPACPI_INFO
6699 "Console audio control enabled, mode: %s\n",
6700 (volume_control_allowed) ?
6701 "override (read/write)" :
6702 "monitor (read only)");
6703
329e4e18
HMH		 6704 return 0;
6705}
f74a27d4 6706
78f81cc4
BD		 6707static int volume_read(char *p)
6708{
6709 int len = 0;
329e4e18 6710 u8 status;
78f81cc4 6711
329e4e18 6712 if (volume_get_status(&status) < 0) {
78f81cc4
BD		 6713 len += sprintf(p + len, "level:\t\tunreadable\n");
6714 } else {
a112ceee
HMH		 6715 if (tp_features.mixer_no_level_control)
6716 len += sprintf(p + len, "level:\t\tunsupported\n");
6717 else
6718 len += sprintf(p + len, "level:\t\t%d\n",
6719 status & TP_EC_AUDIO_LVL_MSK);
6720
329e4e18
HMH		 6721 len += sprintf(p + len, "mute:\t\t%s\n",
6722 onoff(status, TP_EC_AUDIO_MUTESW));
a112ceee 6723
c7ac6291
HMH		 6724 if (volume_control_allowed) {
6725 len += sprintf(p + len, "commands:\tunmute, mute\n");
6726 if (!tp_features.mixer_no_level_control) {
6727 len += sprintf(p + len,
6728 "commands:\tup, down\n");
6729 len += sprintf(p + len,
6730 "commands:\tlevel <level>"
6731 " (<level> is 0-%d)\n",
6732 TP_EC_VOLUME_MAX);
6733 }
a112ceee 6734 }
78f81cc4
BD		 6735 }
6736
6737 return len;
6738}
6739
78f81cc4
BD		 6740static int volume_write(char *buf)
6741{
329e4e18
HMH		 6742 u8 s;
6743 u8 new_level, new_mute;
6744 int l;
78f81cc4 6745 char *cmd;
329e4e18 6746 int rc;
78f81cc4 6747
c7ac6291
HMH		 6748 /*
6749 * We do allow volume control at driver startup, so that the
6750 * user can set initial state through the volume=... parameter hack.
6751 */
6752 if (!volume_control_allowed && tpacpi_lifecycle != TPACPI_LIFE_INIT) {
6753 if (unlikely(!tp_warned.volume_ctrl_forbidden)) {
6754 tp_warned.volume_ctrl_forbidden = 1;
6755 printk(TPACPI_NOTICE
6756 "Console audio control in monitor mode, "
6757 "changes are not allowed.\n");
6758 printk(TPACPI_NOTICE
6759 "Use the volume_control=1 module parameter "
6760 "to enable volume control\n");
6761 }
6762 return -EPERM;
6763 }
6764
329e4e18
HMH		 6765 rc = volume_get_status(&s);
6766 if (rc < 0)
6767 return rc;
78f81cc4 6768
329e4e18
HMH		 6769 new_level = s & TP_EC_AUDIO_LVL_MSK;
6770 new_mute = s & TP_EC_AUDIO_MUTESW_MSK;
6771
6772 while ((cmd = next_cmd(&buf))) {
a112ceee
HMH		 6773 if (!tp_features.mixer_no_level_control) {
6774 if (strlencmp(cmd, "up") == 0) {
6775 if (new_mute)
6776 new_mute = 0;
6777 else if (new_level < TP_EC_VOLUME_MAX)
6778 new_level++;
6779 continue;
6780 } else if (strlencmp(cmd, "down") == 0) {
6781 if (new_mute)
6782 new_mute = 0;
6783 else if (new_level > 0)
6784 new_level--;
6785 continue;
6786 } else if (sscanf(cmd, "level %u", &l) == 1 &&
6787 l >= 0 && l <= TP_EC_VOLUME_MAX) {
6788 new_level = l;
6789 continue;
6790 }
6791 }
6792 if (strlencmp(cmd, "mute") == 0)
329e4e18 6793 new_mute = TP_EC_AUDIO_MUTESW_MSK;
a112ceee
HMH		 6794 else if (strlencmp(cmd, "unmute") == 0)
6795 new_mute = 0;
6796 else
1da177e4 6797 return -EINVAL;
329e4e18 6798 }
1da177e4 6799
a112ceee
HMH		 6800 if (tp_features.mixer_no_level_control) {
6801 tpacpi_disclose_usertask("procfs volume", "%smute\n",
6802 new_mute ? "" : "un");
6803 rc = volume_set_mute(!!new_mute);
6804 } else {
6805 tpacpi_disclose_usertask("procfs volume",
6806 "%smute and set level to %d\n",
6807 new_mute ? "" : "un", new_level);
6808 rc = volume_set_status(new_mute | new_level);
6809 }
78f81cc4 6810
329e4e18 6811 return (rc == -EINTR) ? -ERESTARTSYS : rc;
78f81cc4
BD		 6812}
6813
a5763f22
HMH		 6814static struct ibm_struct volume_driver_data = {
6815 .name = "volume",
6816 .read = volume_read,
6817 .write = volume_write,
329e4e18
HMH		 6818 .exit = volume_exit,
6819 .suspend = volume_suspend,
6820 .shutdown = volume_shutdown,
a5763f22 6821};
56b6aeb0
HMH		 6822
6823/*************************************************************************
6824 * Fan subdriver
6825 */
6826
6827/*
6828 * FAN ACCESS MODES
6829 *
efa27145 6830 * TPACPI_FAN_RD_ACPI_GFAN:
56b6aeb0
HMH		 6831 * ACPI GFAN method: returns fan level
6832 *
efa27145 6833 * see TPACPI_FAN_WR_ACPI_SFAN
f51d1a39 6834 * EC 0x2f (HFSP) not available if GFAN exists
56b6aeb0 6835 *
efa27145 6836 * TPACPI_FAN_WR_ACPI_SFAN:
56b6aeb0
HMH		 6837 * ACPI SFAN method: sets fan level, 0 (stop) to 7 (max)
6838 *
f51d1a39
HMH		 6839 * EC 0x2f (HFSP) might be available *for reading*, but do not use
6840 * it for writing.
56b6aeb0 6841 *
efa27145 6842 * TPACPI_FAN_WR_TPEC:
f51d1a39
HMH		 6843 * ThinkPad EC register 0x2f (HFSP): fan control loop mode
6844 * Supported on almost all ThinkPads
56b6aeb0
HMH		 6845 *
6846 * Fan speed changes of any sort (including those caused by the
6847 * disengaged mode) are usually done slowly by the firmware as the
6848 * maximum ammount of fan duty cycle change per second seems to be
6849 * limited.
6850 *
6851 * Reading is not available if GFAN exists.
6852 * Writing is not available if SFAN exists.
6853 *
6854 * Bits
6855 * 7 automatic mode engaged;
6856 * (default operation mode of the ThinkPad)
6857 * fan level is ignored in this mode.
f51d1a39 6858 * 6 full speed mode (takes precedence over bit 7);
56b6aeb0 6859 * not available on all thinkpads. May disable
f51d1a39
HMH		 6860 * the tachometer while the fan controller ramps up
6861 * the speed (which can take up to a few *minutes*).
6862 * Speeds up fan to 100% duty-cycle, which is far above
6863 * the standard RPM levels. It is not impossible that
6864 * it could cause hardware damage.
56b6aeb0
HMH		 6865 * 5-3 unused in some models. Extra bits for fan level
6866 * in others, but still useless as all values above
6867 * 7 map to the same speed as level 7 in these models.
6868 * 2-0 fan level (0..7 usually)
6869 * 0x00 = stop
6870 * 0x07 = max (set when temperatures critical)
6871 * Some ThinkPads may have other levels, see
efa27145 6872 * TPACPI_FAN_WR_ACPI_FANS (X31/X40/X41)
56b6aeb0
HMH		 6873 *
6874 * FIRMWARE BUG: on some models, EC 0x2f might not be initialized at
6875 * boot. Apparently the EC does not intialize it, so unless ACPI DSDT
6876 * does so, its initial value is meaningless (0x07).
6877 *
6878 * For firmware bugs, refer to:
6879 * http://thinkwiki.org/wiki/Embedded_Controller_Firmware#Firmware_Issues
6880 *
6881 * ----
6882 *
6883 * ThinkPad EC register 0x84 (LSB), 0x85 (MSB):
6884 * Main fan tachometer reading (in RPM)
6885 *
6886 * This register is present on all ThinkPads with a new-style EC, and
6887 * it is known not to be present on the A21m/e, and T22, as there is
6888 * something else in offset 0x84 according to the ACPI DSDT. Other
6889 * ThinkPads from this same time period (and earlier) probably lack the
6890 * tachometer as well.
6891 *
877d0310 6892 * Unfortunately a lot of ThinkPads with new-style ECs but whose firmware
56b6aeb0
HMH		 6893 * was never fixed by IBM to report the EC firmware version string
6894 * probably support the tachometer (like the early X models), so
6895 * detecting it is quite hard. We need more data to know for sure.
6896 *
6897 * FIRMWARE BUG: always read 0x84 first, otherwise incorrect readings
6898 * might result.
6899 *
f51d1a39
HMH		 6900 * FIRMWARE BUG: may go stale while the EC is switching to full speed
6901 * mode.
56b6aeb0
HMH		 6902 *
6903 * For firmware bugs, refer to:
6904 * http://thinkwiki.org/wiki/Embedded_Controller_Firmware#Firmware_Issues
6905 *
d7377247
HMH		 6906 * ----
6907 *
6908 * ThinkPad EC register 0x31 bit 0 (only on select models)
6909 *
6910 * When bit 0 of EC register 0x31 is zero, the tachometer registers
6911 * show the speed of the main fan. When bit 0 of EC register 0x31
6912 * is one, the tachometer registers show the speed of the auxiliary
6913 * fan.
6914 *
6915 * Fan control seems to affect both fans, regardless of the state
6916 * of this bit.
6917 *
6918 * So far, only the firmware for the X60/X61 non-tablet versions
6919 * seem to support this (firmware TP-7M).
6920 *
efa27145 6921 * TPACPI_FAN_WR_ACPI_FANS:
56b6aeb0
HMH		 6922 * ThinkPad X31, X40, X41. Not available in the X60.
6923 *
6924 * FANS ACPI handle: takes three arguments: low speed, medium speed,
6925 * high speed. ACPI DSDT seems to map these three speeds to levels
6926 * as follows: STOP LOW LOW MED MED HIGH HIGH HIGH HIGH
6927 * (this map is stored on FAN0..FAN8 as "0,1,1,2,2,3,3,3,3")
6928 *
6929 * The speeds are stored on handles
6930 * (FANA:FAN9), (FANC:FANB), (FANE:FAND).
6931 *
6932 * There are three default speed sets, acessible as handles:
6933 * FS1L,FS1M,FS1H; FS2L,FS2M,FS2H; FS3L,FS3M,FS3H
6934 *
6935 * ACPI DSDT switches which set is in use depending on various
6936 * factors.
6937 *
efa27145 6938 * TPACPI_FAN_WR_TPEC is also available and should be used to
56b6aeb0
HMH		 6939 * command the fan. The X31/X40/X41 seems to have 8 fan levels,
6940 * but the ACPI tables just mention level 7.
6941 */
6942
f74a27d4
HMH		 6943enum { /* Fan control constants */
6944 fan_status_offset = 0x2f, /* EC register 0x2f */
6945 fan_rpm_offset = 0x84, /* EC register 0x84: LSB, 0x85 MSB (RPM)
6946 * 0x84 must be read before 0x85 */
d7377247
HMH		 6947 fan_select_offset = 0x31, /* EC register 0x31 (Firmware 7M)
6948 bit 0 selects which fan is active */
f74a27d4
HMH		 6949
6950 TP_EC_FAN_FULLSPEED = 0x40, /* EC fan mode: full speed */
6951 TP_EC_FAN_AUTO = 0x80, /* EC fan mode: auto fan control */
6952
6953 TPACPI_FAN_LAST_LEVEL = 0x100, /* Use cached last-seen fan level */
6954};
6955
6956enum fan_status_access_mode {
6957 TPACPI_FAN_NONE = 0, /* No fan status or control */
6958 TPACPI_FAN_RD_ACPI_GFAN, /* Use ACPI GFAN */
6959 TPACPI_FAN_RD_TPEC, /* Use ACPI EC regs 0x2f, 0x84-0x85 */
6960};
6961
6962enum fan_control_access_mode {
6963 TPACPI_FAN_WR_NONE = 0, /* No fan control */
6964 TPACPI_FAN_WR_ACPI_SFAN, /* Use ACPI SFAN */
6965 TPACPI_FAN_WR_TPEC, /* Use ACPI EC reg 0x2f */
6966 TPACPI_FAN_WR_ACPI_FANS, /* Use ACPI FANS and EC reg 0x2f */
6967};
6968
6969enum fan_control_commands {
6970 TPACPI_FAN_CMD_SPEED = 0x0001, /* speed command */
6971 TPACPI_FAN_CMD_LEVEL = 0x0002, /* level command */
6972 TPACPI_FAN_CMD_ENABLE = 0x0004, /* enable/disable cmd,
6973 * and also watchdog cmd */
6974};
6975
6976static int fan_control_allowed;
6977
69ba91cb
HMH		 6978static enum fan_status_access_mode fan_status_access_mode;
6979static enum fan_control_access_mode fan_control_access_mode;
6980static enum fan_control_commands fan_control_commands;
78f81cc4 6981
778b4d74 6982static u8 fan_control_initial_status;
fe98a52c 6983static u8 fan_control_desired_level;
0081b162 6984static u8 fan_control_resume_level;
f74a27d4
HMH		 6985static int fan_watchdog_maxinterval;
6986
6987static struct mutex fan_mutex;
778b4d74 6988
25c68a33 6989static void fan_watchdog_fire(struct work_struct *ignored);
25c68a33 6990static DECLARE_DELAYED_WORK(fan_watchdog_task, fan_watchdog_fire);
16663a87 6991
e0c7dfe7
HMH		 6992TPACPI_HANDLE(fans, ec, "FANS"); /* X31, X40, X41 */
6993TPACPI_HANDLE(gfan, ec, "GFAN", /* 570 */
56b6aeb0
HMH		 6994 "\\FSPD", /* 600e/x, 770e, 770x */
6995 ); /* all others */
e0c7dfe7 6996TPACPI_HANDLE(sfan, ec, "SFAN", /* 570 */
56b6aeb0
HMH		 6997 "JFNS", /* 770x-JL */
6998 ); /* all others */
6999
1c2ece75
HMH		 7000/*
7001 * Unitialized HFSP quirk: ACPI DSDT and EC fail to initialize the
7002 * HFSP register at boot, so it contains 0x07 but the Thinkpad could
7003 * be in auto mode (0x80).
7004 *
7005 * This is corrected by any write to HFSP either by the driver, or
7006 * by the firmware.
7007 *
7008 * We assume 0x07 really means auto mode while this quirk is active,
7009 * as this is far more likely than the ThinkPad being in level 7,
7010 * which is only used by the firmware during thermal emergencies.
7d95a3d5
HMH		 7011 *
7012 * Enable for TP-1Y (T43), TP-78 (R51e), TP-76 (R52),
7013 * TP-70 (T43, R52), which are known to be buggy.
1c2ece75
HMH		 7014 */
7015
7d95a3d5 7016static void fan_quirk1_setup(void)
1c2ece75 7017{
1c2ece75 7018 if (fan_control_initial_status == 0x07) {
7d95a3d5
HMH		 7019 printk(TPACPI_NOTICE
7020 "fan_init: initial fan status is unknown, "
7021 "assuming it is in auto mode\n");
7022 tp_features.fan_ctrl_status_undef = 1;
1c2ece75
HMH		 7023 }
7024}
7025
7026static void fan_quirk1_handle(u8 *fan_status)
7027{
7028 if (unlikely(tp_features.fan_ctrl_status_undef)) {
7029 if (*fan_status != fan_control_initial_status) {
7030 /* something changed the HFSP regisnter since
7031 * driver init time, so it is not undefined
7032 * anymore */
7033 tp_features.fan_ctrl_status_undef = 0;
7034 } else {
7035 /* Return most likely status. In fact, it
7036 * might be the only possible status */
7037 *fan_status = TP_EC_FAN_AUTO;
7038 }
7039 }
7040}
7041
d7377247
HMH		 7042/* Select main fan on X60/X61, NOOP on others */
7043static bool fan_select_fan1(void)
7044{
7045 if (tp_features.second_fan) {
7046 u8 val;
7047
7048 if (ec_read(fan_select_offset, &val) < 0)
7049 return false;
7050 val &= 0xFEU;
7051 if (ec_write(fan_select_offset, val) < 0)
7052 return false;
7053 }
7054 return true;
7055}
7056
7057/* Select secondary fan on X60/X61 */
7058static bool fan_select_fan2(void)
7059{
7060 u8 val;
7061
7062 if (!tp_features.second_fan)
7063 return false;
7064
7065 if (ec_read(fan_select_offset, &val) < 0)
7066 return false;
7067 val |= 0x01U;
7068 if (ec_write(fan_select_offset, val) < 0)
7069 return false;
7070
7071 return true;
7072}
7073
fe98a52c 7074/*
b21a15f6 7075 * Call with fan_mutex held
fe98a52c 7076 */
b21a15f6 7077static void fan_update_desired_level(u8 status)
fe98a52c 7078{
b21a15f6
HMH		 7079 if ((status &
7080 (TP_EC_FAN_AUTO | TP_EC_FAN_FULLSPEED)) == 0) {
7081 if (status > 7)
7082 fan_control_desired_level = 7;
7083 else
7084 fan_control_desired_level = status;
7085 }
7086}
fe98a52c 7087
b21a15f6
HMH		 7088static int fan_get_status(u8 *status)
7089{
7090 u8 s;
fe98a52c 7091
b21a15f6
HMH		 7092 /* TODO:
7093 * Add TPACPI_FAN_RD_ACPI_FANS ? */
fe98a52c 7094
b21a15f6
HMH		 7095 switch (fan_status_access_mode) {
7096 case TPACPI_FAN_RD_ACPI_GFAN:
7097 /* 570, 600e/x, 770e, 770x */
fe98a52c 7098
b21a15f6
HMH		 7099 if (unlikely(!acpi_evalf(gfan_handle, &s, NULL, "d")))
7100 return -EIO;
fe98a52c 7101
b21a15f6
HMH		 7102 if (likely(status))
7103 *status = s & 0x07;
fe98a52c 7104
b21a15f6
HMH		 7105 break;
7106
7107 case TPACPI_FAN_RD_TPEC:
7108 /* all except 570, 600e/x, 770e, 770x */
7109 if (unlikely(!acpi_ec_read(fan_status_offset, &s)))
7110 return -EIO;
7111
1c2ece75 7112 if (likely(status)) {
b21a15f6 7113 *status = s;
1c2ece75
HMH		 7114 fan_quirk1_handle(status);
7115 }
fe98a52c 7116
fe98a52c 7117 break;
b21a15f6 7118
fe98a52c 7119 default:
b21a15f6 7120 return -ENXIO;
fe98a52c
HMH		 7121 }
7122
b21a15f6
HMH		 7123 return 0;
7124}
fe98a52c 7125
b21a15f6
HMH		 7126static int fan_get_status_safe(u8 *status)
7127{
7128 int rc;
7129 u8 s;
fe98a52c 7130
7646ea88 7131 if (mutex_lock_killable(&fan_mutex))
b21a15f6
HMH		 7132 return -ERESTARTSYS;
7133 rc = fan_get_status(&s);
7134 if (!rc)
7135 fan_update_desired_level(s);
7136 mutex_unlock(&fan_mutex);
fe98a52c 7137
b21a15f6
HMH		 7138 if (status)
7139 *status = s;
fe98a52c 7140
b21a15f6
HMH		 7141 return rc;
7142}
7143
7144static int fan_get_speed(unsigned int *speed)
fe98a52c 7145{
b21a15f6 7146 u8 hi, lo;
fe98a52c 7147
b21a15f6
HMH		 7148 switch (fan_status_access_mode) {
7149 case TPACPI_FAN_RD_TPEC:
7150 /* all except 570, 600e/x, 770e, 770x */
d7377247
HMH		 7151 if (unlikely(!fan_select_fan1()))
7152 return -EIO;
b21a15f6
HMH		 7153 if (unlikely(!acpi_ec_read(fan_rpm_offset, &lo) ||
7154 !acpi_ec_read(fan_rpm_offset + 1, &hi)))
7155 return -EIO;
fe98a52c 7156
b21a15f6
HMH		 7157 if (likely(speed))
7158 *speed = (hi << 8) | lo;
fe98a52c 7159
b21a15f6 7160 break;
fe98a52c 7161
b21a15f6
HMH		 7162 default:
7163 return -ENXIO;
7164 }
fe98a52c 7165
b21a15f6 7166 return 0;
fe98a52c
HMH		 7167}
7168
d7377247
HMH		 7169static int fan2_get_speed(unsigned int *speed)
7170{
7171 u8 hi, lo;
7172 bool rc;
7173
7174 switch (fan_status_access_mode) {
7175 case TPACPI_FAN_RD_TPEC:
7176 /* all except 570, 600e/x, 770e, 770x */
7177 if (unlikely(!fan_select_fan2()))
7178 return -EIO;
7179 rc = !acpi_ec_read(fan_rpm_offset, &lo) ||
7180 !acpi_ec_read(fan_rpm_offset + 1, &hi);
7181 fan_select_fan1(); /* play it safe */
7182 if (rc)
7183 return -EIO;
7184
7185 if (likely(speed))
7186 *speed = (hi << 8) | lo;
7187
7188 break;
7189
7190 default:
7191 return -ENXIO;
7192 }
7193
7194 return 0;
7195}
7196
b21a15f6 7197static int fan_set_level(int level)
fe98a52c 7198{
b21a15f6
HMH		 7199 if (!fan_control_allowed)
7200 return -EPERM;
fe98a52c 7201
b21a15f6
HMH		 7202 switch (fan_control_access_mode) {
7203 case TPACPI_FAN_WR_ACPI_SFAN:
7204 if (level >= 0 && level <= 7) {
7205 if (!acpi_evalf(sfan_handle, NULL, NULL, "vd", level))
7206 return -EIO;
7207 } else
7208 return -EINVAL;
7209 break;
fe98a52c 7210
b21a15f6
HMH		 7211 case TPACPI_FAN_WR_ACPI_FANS:
7212 case TPACPI_FAN_WR_TPEC:
0081b162
HMH		 7213 if (!(level & TP_EC_FAN_AUTO) &&
7214 !(level & TP_EC_FAN_FULLSPEED) &&
b21a15f6
HMH		 7215 ((level < 0) || (level > 7)))
7216 return -EINVAL;
fe98a52c 7217
b21a15f6
HMH		 7218 /* safety net should the EC not support AUTO
7219 * or FULLSPEED mode bits and just ignore them */
7220 if (level & TP_EC_FAN_FULLSPEED)
7221 level |= 7; /* safety min speed 7 */
547266e4 7222 else if (level & TP_EC_FAN_AUTO)
b21a15f6 7223 level |= 4; /* safety min speed 4 */
fe98a52c 7224
b21a15f6
HMH		 7225 if (!acpi_ec_write(fan_status_offset, level))
7226 return -EIO;
7227 else
7228 tp_features.fan_ctrl_status_undef = 0;
7229 break;
fe98a52c 7230
b21a15f6
HMH		 7231 default:
7232 return -ENXIO;
7233 }
74a60c0f
HMH		 7234
7235 vdbg_printk(TPACPI_DBG_FAN,
7236 "fan control: set fan control register to 0x%02x\n", level);
b21a15f6 7237 return 0;
fe98a52c
HMH		 7238}
7239
b21a15f6 7240static int fan_set_level_safe(int level)
fe98a52c 7241{
b21a15f6 7242 int rc;
fe98a52c 7243
b21a15f6
HMH		 7244 if (!fan_control_allowed)
7245 return -EPERM;
fe98a52c 7246
7646ea88 7247 if (mutex_lock_killable(&fan_mutex))
b21a15f6 7248 return -ERESTARTSYS;
fe98a52c 7249
b21a15f6
HMH		 7250 if (level == TPACPI_FAN_LAST_LEVEL)
7251 level = fan_control_desired_level;
fe98a52c 7252
b21a15f6
HMH		 7253 rc = fan_set_level(level);
7254 if (!rc)
7255 fan_update_desired_level(level);
7256
7257 mutex_unlock(&fan_mutex);
7258 return rc;
fe98a52c
HMH		 7259}
7260
b21a15f6 7261static int fan_set_enable(void)
fe98a52c 7262{
b21a15f6
HMH		 7263 u8 s;
7264 int rc;
fe98a52c 7265
ecf2a80a
HMH		 7266 if (!fan_control_allowed)
7267 return -EPERM;
7268
7646ea88 7269 if (mutex_lock_killable(&fan_mutex))
b21a15f6 7270 return -ERESTARTSYS;
fe98a52c 7271
b21a15f6
HMH		 7272 switch (fan_control_access_mode) {
7273 case TPACPI_FAN_WR_ACPI_FANS:
7274 case TPACPI_FAN_WR_TPEC:
7275 rc = fan_get_status(&s);
7276 if (rc < 0)
7277 break;
fe98a52c 7278
b21a15f6
HMH		 7279 /* Don't go out of emergency fan mode */
7280 if (s != 7) {
7281 s &= 0x07;
7282 s |= TP_EC_FAN_AUTO | 4; /* min fan speed 4 */
7283 }
fe98a52c 7284
b21a15f6
HMH		 7285 if (!acpi_ec_write(fan_status_offset, s))
7286 rc = -EIO;
7287 else {
7288 tp_features.fan_ctrl_status_undef = 0;
7289 rc = 0;
7290 }
7291 break;
fe98a52c 7292
b21a15f6
HMH		 7293 case TPACPI_FAN_WR_ACPI_SFAN:
7294 rc = fan_get_status(&s);
7295 if (rc < 0)
7296 break;
fe98a52c 7297
b21a15f6 7298 s &= 0x07;
fe98a52c 7299
b21a15f6
HMH		 7300 /* Set fan to at least level 4 */
7301 s |= 4;
fe08bc4b 7302
b21a15f6 7303 if (!acpi_evalf(sfan_handle, NULL, NULL, "vd", s))
35ff8b9f 7304 rc = -EIO;
b21a15f6
HMH		 7305 else
7306 rc = 0;
7307 break;
78f81cc4 7308
b21a15f6
HMH		 7309 default:
7310 rc = -ENXIO;
7311 }
5fba344c 7312
b21a15f6 7313 mutex_unlock(&fan_mutex);
74a60c0f
HMH		 7314
7315 if (!rc)
7316 vdbg_printk(TPACPI_DBG_FAN,
7317 "fan control: set fan control register to 0x%02x\n",
7318 s);
b21a15f6 7319 return rc;
69ba91cb 7320}
78f81cc4 7321
b21a15f6 7322static int fan_set_disable(void)
78f81cc4 7323{
b21a15f6 7324 int rc;
c52f0aa5 7325
b21a15f6
HMH		 7326 if (!fan_control_allowed)
7327 return -EPERM;
78f81cc4 7328
7646ea88 7329 if (mutex_lock_killable(&fan_mutex))
b21a15f6 7330 return -ERESTARTSYS;
3ef8a609 7331
b21a15f6
HMH		 7332 rc = 0;
7333 switch (fan_control_access_mode) {
7334 case TPACPI_FAN_WR_ACPI_FANS:
7335 case TPACPI_FAN_WR_TPEC:
7336 if (!acpi_ec_write(fan_status_offset, 0x00))
7337 rc = -EIO;
7338 else {
7339 fan_control_desired_level = 0;
7340 tp_features.fan_ctrl_status_undef = 0;
7341 }
3ef8a609
HMH		 7342 break;
7343
b21a15f6
HMH		 7344 case TPACPI_FAN_WR_ACPI_SFAN:
7345 if (!acpi_evalf(sfan_handle, NULL, NULL, "vd", 0x00))
7346 rc = -EIO;
7347 else
7348 fan_control_desired_level = 0;
c52f0aa5
HMH		 7349 break;
7350
7351 default:
b21a15f6 7352 rc = -ENXIO;
78f81cc4
BD		 7353 }
7354
74a60c0f
HMH		 7355 if (!rc)
7356 vdbg_printk(TPACPI_DBG_FAN,
7357 "fan control: set fan control register to 0\n");
fe98a52c 7358
fe98a52c 7359 mutex_unlock(&fan_mutex);
fe98a52c
HMH		 7360 return rc;
7361}
7362
b21a15f6 7363static int fan_set_speed(int speed)
c52f0aa5 7364{
b21a15f6 7365 int rc;
c52f0aa5 7366
b21a15f6
HMH		 7367 if (!fan_control_allowed)
7368 return -EPERM;
3ef8a609 7369
7646ea88 7370 if (mutex_lock_killable(&fan_mutex))
b21a15f6 7371 return -ERESTARTSYS;
c52f0aa5 7372
b21a15f6
HMH		 7373 rc = 0;
7374 switch (fan_control_access_mode) {
7375 case TPACPI_FAN_WR_ACPI_FANS:
7376 if (speed >= 0 && speed <= 65535) {
7377 if (!acpi_evalf(fans_handle, NULL, NULL, "vddd",
7378 speed, speed, speed))
7379 rc = -EIO;
7380 } else
7381 rc = -EINVAL;
c52f0aa5
HMH		 7382 break;
7383
7384 default:
b21a15f6 7385 rc = -ENXIO;
c52f0aa5
HMH		 7386 }
7387
b21a15f6
HMH		 7388 mutex_unlock(&fan_mutex);
7389 return rc;
16663a87
HMH		 7390}
7391
7392static void fan_watchdog_reset(void)
7393{
94954cc6 7394 static int fan_watchdog_active;
16663a87 7395
4985cd0a
HMH		 7396 if (fan_control_access_mode == TPACPI_FAN_WR_NONE)
7397 return;
7398
16663a87
HMH		 7399 if (fan_watchdog_active)
7400 cancel_delayed_work(&fan_watchdog_task);
7401
8fef502e
HMH		 7402 if (fan_watchdog_maxinterval > 0 &&
7403 tpacpi_lifecycle != TPACPI_LIFE_EXITING) {
16663a87 7404 fan_watchdog_active = 1;
e0e3c061 7405 if (!queue_delayed_work(tpacpi_wq, &fan_watchdog_task,
16663a87
HMH		 7406 msecs_to_jiffies(fan_watchdog_maxinterval
7407 * 1000))) {
35ff8b9f 7408 printk(TPACPI_ERR
e0e3c061 7409 "failed to queue the fan watchdog, "
16663a87
HMH		 7410 "watchdog will not trigger\n");
7411 }
7412 } else
7413 fan_watchdog_active = 0;
7414}
7415
b21a15f6 7416static void fan_watchdog_fire(struct work_struct *ignored)
78f81cc4 7417{
b21a15f6 7418 int rc;
18ad7996 7419
b21a15f6
HMH		 7420 if (tpacpi_lifecycle != TPACPI_LIFE_RUNNING)
7421 return;
a12095c2 7422
e0c7dfe7 7423 printk(TPACPI_NOTICE "fan watchdog: enabling fan\n");
b21a15f6
HMH		 7424 rc = fan_set_enable();
7425 if (rc < 0) {
e0c7dfe7 7426 printk(TPACPI_ERR "fan watchdog: error %d while enabling fan, "
b21a15f6
HMH		 7427 "will try again later...\n", -rc);
7428 /* reschedule for later */
7429 fan_watchdog_reset();
7430 }
7431}
eaa7571b 7432
b21a15f6
HMH		 7433/*
7434 * SYSFS fan layout: hwmon compatible (device)
7435 *
7436 * pwm*_enable:
7437 * 0: "disengaged" mode
7438 * 1: manual mode
7439 * 2: native EC "auto" mode (recommended, hardware default)
7440 *
7441 * pwm*: set speed in manual mode, ignored otherwise.
7442 * 0 is level 0; 255 is level 7. Intermediate points done with linear
7443 * interpolation.
7444 *
7445 * fan*_input: tachometer reading, RPM
7446 *
7447 *
7448 * SYSFS fan layout: extensions
7449 *
7450 * fan_watchdog (driver):
7451 * fan watchdog interval in seconds, 0 disables (default), max 120
7452 */
7453
7454/* sysfs fan pwm1_enable ----------------------------------------------- */
7455static ssize_t fan_pwm1_enable_show(struct device *dev,
7456 struct device_attribute *attr,
7457 char *buf)
7458{
7459 int res, mode;
7460 u8 status;
7461
7462 res = fan_get_status_safe(&status);
7463 if (res)
7464 return res;
7465
b21a15f6
HMH		 7466 if (status & TP_EC_FAN_FULLSPEED) {
7467 mode = 0;
7468 } else if (status & TP_EC_FAN_AUTO) {
7469 mode = 2;
7470 } else
7471 mode = 1;
7472
7473 return snprintf(buf, PAGE_SIZE, "%d\n", mode);
7474}
a12095c2 7475
b21a15f6
HMH		 7476static ssize_t fan_pwm1_enable_store(struct device *dev,
7477 struct device_attribute *attr,
7478 const char *buf, size_t count)
7479{
7480 unsigned long t;
7481 int res, level;
7482
7483 if (parse_strtoul(buf, 2, &t))
7484 return -EINVAL;
7485
74a60c0f
HMH		 7486 tpacpi_disclose_usertask("hwmon pwm1_enable",
7487 "set fan mode to %lu\n", t);
7488
b21a15f6
HMH		 7489 switch (t) {
7490 case 0:
7491 level = TP_EC_FAN_FULLSPEED;
7492 break;
7493 case 1:
7494 level = TPACPI_FAN_LAST_LEVEL;
7495 break;
7496 case 2:
7497 level = TP_EC_FAN_AUTO;
7498 break;
7499 case 3:
7500 /* reserved for software-controlled auto mode */
7501 return -ENOSYS;
18ad7996 7502 default:
b21a15f6 7503 return -EINVAL;
18ad7996 7504 }
b21a15f6
HMH		 7505
7506 res = fan_set_level_safe(level);
7507 if (res == -ENXIO)
7508 return -EINVAL;
7509 else if (res < 0)
7510 return res;
7511
7512 fan_watchdog_reset();
7513
7514 return count;
18ad7996
HMH		 7515}
7516
b21a15f6
HMH		 7517static struct device_attribute dev_attr_fan_pwm1_enable =
7518 __ATTR(pwm1_enable, S_IWUSR | S_IRUGO,
7519 fan_pwm1_enable_show, fan_pwm1_enable_store);
7520
7521/* sysfs fan pwm1 ------------------------------------------------------ */
7522static ssize_t fan_pwm1_show(struct device *dev,
7523 struct device_attribute *attr,
7524 char *buf)
fe98a52c 7525{
b21a15f6
HMH		 7526 int res;
7527 u8 status;
fe98a52c 7528
b21a15f6
HMH		 7529 res = fan_get_status_safe(&status);
7530 if (res)
7531 return res;
ecf2a80a 7532
b21a15f6
HMH		 7533 if ((status &
7534 (TP_EC_FAN_AUTO | TP_EC_FAN_FULLSPEED)) != 0)
7535 status = fan_control_desired_level;
fe98a52c 7536
b21a15f6
HMH		 7537 if (status > 7)
7538 status = 7;
fe98a52c 7539
b21a15f6 7540 return snprintf(buf, PAGE_SIZE, "%u\n", (status * 255) / 7);
fe98a52c
HMH		 7541}
7542
b21a15f6
HMH		 7543static ssize_t fan_pwm1_store(struct device *dev,
7544 struct device_attribute *attr,
7545 const char *buf, size_t count)
18ad7996 7546{
b21a15f6 7547 unsigned long s;
1c6a334e 7548 int rc;
b21a15f6 7549 u8 status, newlevel;
1c6a334e 7550
b21a15f6
HMH		 7551 if (parse_strtoul(buf, 255, &s))
7552 return -EINVAL;
7553
74a60c0f
HMH		 7554 tpacpi_disclose_usertask("hwmon pwm1",
7555 "set fan speed to %lu\n", s);
7556
b21a15f6
HMH		 7557 /* scale down from 0-255 to 0-7 */
7558 newlevel = (s >> 5) & 0x07;
ecf2a80a 7559
7646ea88 7560 if (mutex_lock_killable(&fan_mutex))
fc589a3c 7561 return -ERESTARTSYS;
40ca9fdf 7562
b21a15f6
HMH		 7563 rc = fan_get_status(&status);
7564 if (!rc && (status &
7565 (TP_EC_FAN_AUTO | TP_EC_FAN_FULLSPEED)) == 0) {
7566 rc = fan_set_level(newlevel);
7567 if (rc == -ENXIO)
7568 rc = -EINVAL;
7569 else if (!rc) {
7570 fan_update_desired_level(newlevel);
7571 fan_watchdog_reset();
eaa7571b 7572 }
b21a15f6 7573 }
1c6a334e 7574
b21a15f6
HMH		 7575 mutex_unlock(&fan_mutex);
7576 return (rc)? rc : count;
7577}
1c6a334e 7578
b21a15f6
HMH		 7579static struct device_attribute dev_attr_fan_pwm1 =
7580 __ATTR(pwm1, S_IWUSR | S_IRUGO,
7581 fan_pwm1_show, fan_pwm1_store);
1c6a334e 7582
b21a15f6
HMH		 7583/* sysfs fan fan1_input ------------------------------------------------ */
7584static ssize_t fan_fan1_input_show(struct device *dev,
7585 struct device_attribute *attr,
7586 char *buf)
7587{
7588 int res;
7589 unsigned int speed;
1c6a334e 7590
b21a15f6
HMH		 7591 res = fan_get_speed(&speed);
7592 if (res < 0)
7593 return res;
1c6a334e 7594
b21a15f6
HMH		 7595 return snprintf(buf, PAGE_SIZE, "%u\n", speed);
7596}
18ad7996 7597
b21a15f6
HMH		 7598static struct device_attribute dev_attr_fan_fan1_input =
7599 __ATTR(fan1_input, S_IRUGO,
7600 fan_fan1_input_show, NULL);
40ca9fdf 7601
d7377247
HMH		 7602/* sysfs fan fan2_input ------------------------------------------------ */
7603static ssize_t fan_fan2_input_show(struct device *dev,
7604 struct device_attribute *attr,
7605 char *buf)
7606{
7607 int res;
7608 unsigned int speed;
7609
7610 res = fan2_get_speed(&speed);
7611 if (res < 0)
7612 return res;
7613
7614 return snprintf(buf, PAGE_SIZE, "%u\n", speed);
7615}
7616
7617static struct device_attribute dev_attr_fan_fan2_input =
7618 __ATTR(fan2_input, S_IRUGO,
7619 fan_fan2_input_show, NULL);
7620
b21a15f6
HMH		 7621/* sysfs fan fan_watchdog (hwmon driver) ------------------------------- */
7622static ssize_t fan_fan_watchdog_show(struct device_driver *drv,
7623 char *buf)
7624{
7625 return snprintf(buf, PAGE_SIZE, "%u\n", fan_watchdog_maxinterval);
18ad7996
HMH		 7626}
7627
b21a15f6
HMH		 7628static ssize_t fan_fan_watchdog_store(struct device_driver *drv,
7629 const char *buf, size_t count)
18ad7996 7630{
b21a15f6
HMH		 7631 unsigned long t;
7632
7633 if (parse_strtoul(buf, 120, &t))
7634 return -EINVAL;
40ca9fdf 7635
ecf2a80a
HMH		 7636 if (!fan_control_allowed)
7637 return -EPERM;
7638
b21a15f6
HMH		 7639 fan_watchdog_maxinterval = t;
7640 fan_watchdog_reset();
40ca9fdf 7641
74a60c0f
HMH		 7642 tpacpi_disclose_usertask("fan_watchdog", "set to %lu\n", t);
7643
b21a15f6
HMH		 7644 return count;
7645}
7646
7647static DRIVER_ATTR(fan_watchdog, S_IWUSR | S_IRUGO,
7648 fan_fan_watchdog_show, fan_fan_watchdog_store);
7649
7650/* --------------------------------------------------------------------- */
7651static struct attribute *fan_attributes[] = {
7652 &dev_attr_fan_pwm1_enable.attr, &dev_attr_fan_pwm1.attr,
7653 &dev_attr_fan_fan1_input.attr,
d7377247 7654 NULL, /* for fan2_input */
b21a15f6
HMH		 7655 NULL
7656};
7657
7658static const struct attribute_group fan_attr_group = {
7659 .attrs = fan_attributes,
7660};
7661
d7377247
HMH		 7662#define TPACPI_FAN_Q1 0x0001 /* Unitialized HFSP */
7663#define TPACPI_FAN_2FAN 0x0002 /* EC 0x31 bit 0 selects fan2 */
7d95a3d5
HMH		 7664
7665#define TPACPI_FAN_QI(__id1, __id2, __quirks) \
7666 { .vendor = PCI_VENDOR_ID_IBM, \
7667 .bios = TPACPI_MATCH_ANY, \
7668 .ec = TPID(__id1, __id2), \
7669 .quirks = __quirks }
7670
d7377247
HMH		 7671#define TPACPI_FAN_QL(__id1, __id2, __quirks) \
7672 { .vendor = PCI_VENDOR_ID_LENOVO, \
7673 .bios = TPACPI_MATCH_ANY, \
7674 .ec = TPID(__id1, __id2), \
7675 .quirks = __quirks }
7676
7d95a3d5
HMH		 7677static const struct tpacpi_quirk fan_quirk_table[] __initconst = {
7678 TPACPI_FAN_QI('1', 'Y', TPACPI_FAN_Q1),
7679 TPACPI_FAN_QI('7', '8', TPACPI_FAN_Q1),
7680 TPACPI_FAN_QI('7', '6', TPACPI_FAN_Q1),
7681 TPACPI_FAN_QI('7', '0', TPACPI_FAN_Q1),
d7377247 7682 TPACPI_FAN_QL('7', 'M', TPACPI_FAN_2FAN),
7d95a3d5
HMH		 7683};
7684
d7377247 7685#undef TPACPI_FAN_QL
7d95a3d5
HMH		 7686#undef TPACPI_FAN_QI
7687
b21a15f6
HMH		 7688static int __init fan_init(struct ibm_init_struct *iibm)
7689{
7690 int rc;
7d95a3d5 7691 unsigned long quirks;
b21a15f6 7692
74a60c0f
HMH		 7693 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_FAN,
7694 "initializing fan subdriver\n");
b21a15f6
HMH		 7695
7696 mutex_init(&fan_mutex);
7697 fan_status_access_mode = TPACPI_FAN_NONE;
7698 fan_control_access_mode = TPACPI_FAN_WR_NONE;
7699 fan_control_commands = 0;
7700 fan_watchdog_maxinterval = 0;
7701 tp_features.fan_ctrl_status_undef = 0;
d7377247 7702 tp_features.second_fan = 0;
b21a15f6
HMH		 7703 fan_control_desired_level = 7;
7704
e0c7dfe7
HMH		 7705 TPACPI_ACPIHANDLE_INIT(fans);
7706 TPACPI_ACPIHANDLE_INIT(gfan);
7707 TPACPI_ACPIHANDLE_INIT(sfan);
b21a15f6 7708
7d95a3d5
HMH		 7709 quirks = tpacpi_check_quirks(fan_quirk_table,
7710 ARRAY_SIZE(fan_quirk_table));
7711
b21a15f6
HMH		 7712 if (gfan_handle) {
7713 /* 570, 600e/x, 770e, 770x */
7714 fan_status_access_mode = TPACPI_FAN_RD_ACPI_GFAN;
7715 } else {
7716 /* all other ThinkPads: note that even old-style
7717 * ThinkPad ECs supports the fan control register */
7718 if (likely(acpi_ec_read(fan_status_offset,
7719 &fan_control_initial_status))) {
7720 fan_status_access_mode = TPACPI_FAN_RD_TPEC;
7d95a3d5
HMH		 7721 if (quirks & TPACPI_FAN_Q1)
7722 fan_quirk1_setup();
d7377247
HMH		 7723 if (quirks & TPACPI_FAN_2FAN) {
7724 tp_features.second_fan = 1;
7725 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_FAN,
7726 "secondary fan support enabled\n");
7727 }
b21a15f6 7728 } else {
e0c7dfe7 7729 printk(TPACPI_ERR
b21a15f6
HMH		 7730 "ThinkPad ACPI EC access misbehaving, "
7731 "fan status and control unavailable\n");
7732 return 1;
7733 }
7734 }
7735
7736 if (sfan_handle) {
7737 /* 570, 770x-JL */
7738 fan_control_access_mode = TPACPI_FAN_WR_ACPI_SFAN;
7739 fan_control_commands |=
7740 TPACPI_FAN_CMD_LEVEL | TPACPI_FAN_CMD_ENABLE;
7741 } else {
7742 if (!gfan_handle) {
7743 /* gfan without sfan means no fan control */
7744 /* all other models implement TP EC 0x2f control */
7745
7746 if (fans_handle) {
7747 /* X31, X40, X41 */
7748 fan_control_access_mode =
7749 TPACPI_FAN_WR_ACPI_FANS;
7750 fan_control_commands |=
7751 TPACPI_FAN_CMD_SPEED |
7752 TPACPI_FAN_CMD_LEVEL |
7753 TPACPI_FAN_CMD_ENABLE;
7754 } else {
7755 fan_control_access_mode = TPACPI_FAN_WR_TPEC;
7756 fan_control_commands |=
7757 TPACPI_FAN_CMD_LEVEL |
7758 TPACPI_FAN_CMD_ENABLE;
7759 }
fe98a52c 7760 }
b21a15f6 7761 }
18ad7996 7762
74a60c0f
HMH		 7763 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_FAN,
7764 "fan is %s, modes %d, %d\n",
b21a15f6
HMH		 7765 str_supported(fan_status_access_mode != TPACPI_FAN_NONE ||
7766 fan_control_access_mode != TPACPI_FAN_WR_NONE),
7767 fan_status_access_mode, fan_control_access_mode);
1c6a334e 7768
b21a15f6
HMH		 7769 /* fan control master switch */
7770 if (!fan_control_allowed) {
7771 fan_control_access_mode = TPACPI_FAN_WR_NONE;
7772 fan_control_commands = 0;
74a60c0f 7773 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_FAN,
b21a15f6 7774 "fan control features disabled by parameter\n");
18ad7996 7775 }
40ca9fdf 7776
b21a15f6
HMH		 7777 /* update fan_control_desired_level */
7778 if (fan_status_access_mode != TPACPI_FAN_NONE)
7779 fan_get_status_safe(NULL);
fe98a52c 7780
b21a15f6
HMH		 7781 if (fan_status_access_mode != TPACPI_FAN_NONE ||
7782 fan_control_access_mode != TPACPI_FAN_WR_NONE) {
d7377247
HMH		 7783 if (tp_features.second_fan) {
7784 /* attach second fan tachometer */
7785 fan_attributes[ARRAY_SIZE(fan_attributes)-2] =
7786 &dev_attr_fan_fan2_input.attr;
7787 }
b21a15f6
HMH		 7788 rc = sysfs_create_group(&tpacpi_sensors_pdev->dev.kobj,
7789 &fan_attr_group);
b21a15f6
HMH		 7790 if (rc < 0)
7791 return rc;
9c0a76e1
HMH		 7792
7793 rc = driver_create_file(&tpacpi_hwmon_pdriver.driver,
7794 &driver_attr_fan_watchdog);
7795 if (rc < 0) {
7796 sysfs_remove_group(&tpacpi_sensors_pdev->dev.kobj,
7797 &fan_attr_group);
7798 return rc;
7799 }
b21a15f6
HMH		 7800 return 0;
7801 } else
7802 return 1;
56b6aeb0
HMH		 7803}
7804
b21a15f6 7805static void fan_exit(void)
56b6aeb0 7806{
74a60c0f 7807 vdbg_printk(TPACPI_DBG_EXIT | TPACPI_DBG_FAN,
35ff8b9f 7808 "cancelling any pending fan watchdog tasks\n");
56b6aeb0 7809
b21a15f6
HMH		 7810 /* FIXME: can we really do this unconditionally? */
7811 sysfs_remove_group(&tpacpi_sensors_pdev->dev.kobj, &fan_attr_group);
35ff8b9f
HMH		 7812 driver_remove_file(&tpacpi_hwmon_pdriver.driver,
7813 &driver_attr_fan_watchdog);
40ca9fdf 7814
b21a15f6 7815 cancel_delayed_work(&fan_watchdog_task);
e0e3c061 7816 flush_workqueue(tpacpi_wq);
56b6aeb0
HMH		 7817}
7818
75700e53
HMH		 7819static void fan_suspend(pm_message_t state)
7820{
0081b162
HMH		 7821 int rc;
7822
75700e53
HMH		 7823 if (!fan_control_allowed)
7824 return;
7825
7826 /* Store fan status in cache */
0081b162
HMH		 7827 fan_control_resume_level = 0;
7828 rc = fan_get_status_safe(&fan_control_resume_level);
7829 if (rc < 0)
7830 printk(TPACPI_NOTICE
7831 "failed to read fan level for later "
7832 "restore during resume: %d\n", rc);
7833
7834 /* if it is undefined, don't attempt to restore it.
7835 * KEEP THIS LAST */
75700e53 7836 if (tp_features.fan_ctrl_status_undef)
0081b162 7837 fan_control_resume_level = 0;
75700e53
HMH		 7838}
7839
7840static void fan_resume(void)
7841{
75700e53
HMH		 7842 u8 current_level = 7;
7843 bool do_set = false;
0081b162 7844 int rc;
75700e53
HMH		 7845
7846 /* DSDT *always* updates status on resume */
7847 tp_features.fan_ctrl_status_undef = 0;
7848
75700e53 7849 if (!fan_control_allowed ||
0081b162 7850 !fan_control_resume_level ||
75700e53
HMH		 7851 (fan_get_status_safe(&current_level) < 0))
7852 return;
7853
7854 switch (fan_control_access_mode) {
7855 case TPACPI_FAN_WR_ACPI_SFAN:
0081b162
HMH		 7856 /* never decrease fan level */
7857 do_set = (fan_control_resume_level > current_level);
75700e53
HMH		 7858 break;
7859 case TPACPI_FAN_WR_ACPI_FANS:
7860 case TPACPI_FAN_WR_TPEC:
0081b162
HMH		 7861 /* never decrease fan level, scale is:
7862 * TP_EC_FAN_FULLSPEED > 7 >= TP_EC_FAN_AUTO
7863 *
7864 * We expect the firmware to set either 7 or AUTO, but we
7865 * handle FULLSPEED out of paranoia.
7866 *
7867 * So, we can safely only restore FULLSPEED or 7, anything
7868 * else could slow the fan. Restoring AUTO is useless, at
7869 * best that's exactly what the DSDT already set (it is the
7870 * slower it uses).
7871 *
7872 * Always keep in mind that the DSDT *will* have set the
7873 * fans to what the vendor supposes is the best level. We
7874 * muck with it only to speed the fan up.
7875 */
7876 if (fan_control_resume_level != 7 &&
7877 !(fan_control_resume_level & TP_EC_FAN_FULLSPEED))
7878 return;
7879 else
7880 do_set = !(current_level & TP_EC_FAN_FULLSPEED) &&
7881 (current_level != fan_control_resume_level);
75700e53
HMH		 7882 break;
7883 default:
7884 return;
7885 }
7886 if (do_set) {
7887 printk(TPACPI_NOTICE
7888 "restoring fan level to 0x%02x\n",
0081b162
HMH		 7889 fan_control_resume_level);
7890 rc = fan_set_level_safe(fan_control_resume_level);
7891 if (rc < 0)
7892 printk(TPACPI_NOTICE
7893 "failed to restore fan level: %d\n", rc);
75700e53
HMH		 7894 }
7895}
7896
56b6aeb0
HMH		 7897static int fan_read(char *p)
7898{
7899 int len = 0;
7900 int rc;
7901 u8 status;
7902 unsigned int speed = 0;
7903
7904 switch (fan_status_access_mode) {
efa27145 7905 case TPACPI_FAN_RD_ACPI_GFAN:
56b6aeb0 7906 /* 570, 600e/x, 770e, 770x */
35ff8b9f
HMH		 7907 rc = fan_get_status_safe(&status);
7908 if (rc < 0)
56b6aeb0
HMH		 7909 return rc;
7910
7911 len += sprintf(p + len, "status:\t\t%s\n"
7912 "level:\t\t%d\n",
7913 (status != 0) ? "enabled" : "disabled", status);
7914 break;
7915
efa27145 7916 case TPACPI_FAN_RD_TPEC:
56b6aeb0 7917 /* all except 570, 600e/x, 770e, 770x */
35ff8b9f
HMH		 7918 rc = fan_get_status_safe(&status);
7919 if (rc < 0)
56b6aeb0
HMH		 7920 return rc;
7921
56b6aeb0
HMH		 7922 len += sprintf(p + len, "status:\t\t%s\n",
7923 (status != 0) ? "enabled" : "disabled");
7924
35ff8b9f
HMH		 7925 rc = fan_get_speed(&speed);
7926 if (rc < 0)
56b6aeb0
HMH		 7927 return rc;
7928
7929 len += sprintf(p + len, "speed:\t\t%d\n", speed);
7930
efa27145 7931 if (status & TP_EC_FAN_FULLSPEED)
56b6aeb0
HMH		 7932 /* Disengaged mode takes precedence */
7933 len += sprintf(p + len, "level:\t\tdisengaged\n");
efa27145 7934 else if (status & TP_EC_FAN_AUTO)
56b6aeb0
HMH		 7935 len += sprintf(p + len, "level:\t\tauto\n");
7936 else
7937 len += sprintf(p + len, "level:\t\t%d\n", status);
7938 break;
7939
efa27145 7940 case TPACPI_FAN_NONE:
56b6aeb0
HMH		 7941 default:
7942 len += sprintf(p + len, "status:\t\tnot supported\n");
7943 }
7944
efa27145 7945 if (fan_control_commands & TPACPI_FAN_CMD_LEVEL) {
56b6aeb0
HMH		 7946 len += sprintf(p + len, "commands:\tlevel <level>");
7947
7948 switch (fan_control_access_mode) {
efa27145 7949 case TPACPI_FAN_WR_ACPI_SFAN:
56b6aeb0
HMH		 7950 len += sprintf(p + len, " (<level> is 0-7)\n");
7951 break;
7952
7953 default:
7954 len += sprintf(p + len, " (<level> is 0-7, "
fe98a52c 7955 "auto, disengaged, full-speed)\n");
56b6aeb0
HMH		 7956 break;
7957 }
7958 }
18ad7996 7959
efa27145 7960 if (fan_control_commands & TPACPI_FAN_CMD_ENABLE)
56b6aeb0 7961 len += sprintf(p + len, "commands:\tenable, disable\n"
35ff8b9f
HMH		 7962 "commands:\twatchdog <timeout> (<timeout> "
7963 "is 0 (off), 1-120 (seconds))\n");
1da177e4 7964
efa27145 7965 if (fan_control_commands & TPACPI_FAN_CMD_SPEED)
56b6aeb0
HMH		 7966 len += sprintf(p + len, "commands:\tspeed <speed>"
7967 " (<speed> is 0-65535)\n");
7968
7969 return len;
78f81cc4
BD		 7970}
7971
18ad7996
HMH		 7972static int fan_write_cmd_level(const char *cmd, int *rc)
7973{
7974 int level;
7975
a12095c2 7976 if (strlencmp(cmd, "level auto") == 0)
efa27145 7977 level = TP_EC_FAN_AUTO;
fe98a52c 7978 else if ((strlencmp(cmd, "level disengaged") == 0) |
35ff8b9f 7979 (strlencmp(cmd, "level full-speed") == 0))
efa27145 7980 level = TP_EC_FAN_FULLSPEED;
a12095c2 7981 else if (sscanf(cmd, "level %d", &level) != 1)
18ad7996
HMH		 7982 return 0;
7983
35ff8b9f
HMH		 7984 *rc = fan_set_level_safe(level);
7985 if (*rc == -ENXIO)
e0c7dfe7 7986 printk(TPACPI_ERR "level command accepted for unsupported "
18ad7996 7987 "access mode %d", fan_control_access_mode);
74a60c0f
HMH		 7988 else if (!*rc)
7989 tpacpi_disclose_usertask("procfs fan",
7990 "set level to %d\n", level);
18ad7996
HMH		 7991
7992 return 1;
7993}
7994
7995static int fan_write_cmd_enable(const char *cmd, int *rc)
7996{
7997 if (strlencmp(cmd, "enable") != 0)
7998 return 0;
7999
35ff8b9f
HMH		 8000 *rc = fan_set_enable();
8001 if (*rc == -ENXIO)
e0c7dfe7 8002 printk(TPACPI_ERR "enable command accepted for unsupported "
18ad7996 8003 "access mode %d", fan_control_access_mode);
74a60c0f
HMH		 8004 else if (!*rc)
8005 tpacpi_disclose_usertask("procfs fan", "enable\n");
18ad7996
HMH		 8006
8007 return 1;
8008}
8009
8010static int fan_write_cmd_disable(const char *cmd, int *rc)
8011{
8012 if (strlencmp(cmd, "disable") != 0)
8013 return 0;
8014
35ff8b9f
HMH		 8015 *rc = fan_set_disable();
8016 if (*rc == -ENXIO)
e0c7dfe7 8017 printk(TPACPI_ERR "disable command accepted for unsupported "
18ad7996 8018 "access mode %d", fan_control_access_mode);
74a60c0f
HMH		 8019 else if (!*rc)
8020 tpacpi_disclose_usertask("procfs fan", "disable\n");
18ad7996
HMH		 8021
8022 return 1;
8023}
8024
8025static int fan_write_cmd_speed(const char *cmd, int *rc)
8026{
8027 int speed;
8028
a8b7a662
HMH		 8029 /* TODO:
8030 * Support speed <low> <medium> <high> ? */
8031
18ad7996
HMH		 8032 if (sscanf(cmd, "speed %d", &speed) != 1)
8033 return 0;
8034
35ff8b9f
HMH		 8035 *rc = fan_set_speed(speed);
8036 if (*rc == -ENXIO)
e0c7dfe7 8037 printk(TPACPI_ERR "speed command accepted for unsupported "
18ad7996 8038 "access mode %d", fan_control_access_mode);
74a60c0f
HMH		 8039 else if (!*rc)
8040 tpacpi_disclose_usertask("procfs fan",
8041 "set speed to %d\n", speed);
18ad7996
HMH		 8042
8043 return 1;
8044}
8045
16663a87
HMH		 8046static int fan_write_cmd_watchdog(const char *cmd, int *rc)
8047{
8048 int interval;
8049
8050 if (sscanf(cmd, "watchdog %d", &interval) != 1)
8051 return 0;
8052
8053 if (interval < 0 || interval > 120)
8054 *rc = -EINVAL;
74a60c0f 8055 else {
16663a87 8056 fan_watchdog_maxinterval = interval;
74a60c0f
HMH		 8057 tpacpi_disclose_usertask("procfs fan",
8058 "set watchdog timer to %d\n",
8059 interval);
8060 }
16663a87
HMH		 8061
8062 return 1;
8063}
8064
18ad7996
HMH		 8065static int fan_write(char *buf)
8066{
8067 char *cmd;
8068 int rc = 0;
8069
8070 while (!rc && (cmd = next_cmd(&buf))) {
efa27145 8071 if (!((fan_control_commands & TPACPI_FAN_CMD_LEVEL) &&
18ad7996 8072 fan_write_cmd_level(cmd, &rc)) &&
efa27145 8073 !((fan_control_commands & TPACPI_FAN_CMD_ENABLE) &&
18ad7996 8074 (fan_write_cmd_enable(cmd, &rc) ||
16663a87
HMH		 8075 fan_write_cmd_disable(cmd, &rc) ||
8076 fan_write_cmd_watchdog(cmd, &rc))) &&
efa27145 8077 !((fan_control_commands & TPACPI_FAN_CMD_SPEED) &&
18ad7996
HMH		 8078 fan_write_cmd_speed(cmd, &rc))
8079 )
8080 rc = -EINVAL;
16663a87
HMH		 8081 else if (!rc)
8082 fan_watchdog_reset();
18ad7996
HMH		 8083 }
8084
8085 return rc;
8086}
8087
a5763f22
HMH		 8088static struct ibm_struct fan_driver_data = {
8089 .name = "fan",
8090 .read = fan_read,
8091 .write = fan_write,
8092 .exit = fan_exit,
75700e53
HMH		 8093 .suspend = fan_suspend,
8094 .resume = fan_resume,
a5763f22
HMH		 8095};
8096
56b6aeb0
HMH		 8097/****************************************************************************
8098 ****************************************************************************
8099 *
8100 * Infrastructure
8101 *
8102 ****************************************************************************
8103 ****************************************************************************/
8104
8b468c0c
HMH		 8105/*
8106 * HKEY event callout for other subdrivers go here
8107 * (yes, it is ugly, but it is quick, safe, and gets the job done
8108 */
8109static void tpacpi_driver_event(const unsigned int hkey_event)
8110{
347a2686
HMH		 8111 if (ibm_backlight_device) {
8112 switch (hkey_event) {
8113 case TP_HKEY_EV_BRGHT_UP:
8114 case TP_HKEY_EV_BRGHT_DOWN:
8115 tpacpi_brightness_notify_change();
8116 }
8117 }
8b468c0c
HMH		 8118}
8119
8120
8121
8122static void hotkey_driver_event(const unsigned int scancode)
8123{
67bcae6e 8124 tpacpi_driver_event(TP_HKEY_EV_HOTKEY_BASE + scancode);
8b468c0c
HMH		 8125}
8126
7fd40029
HMH		 8127/* sysfs name ---------------------------------------------------------- */
8128static ssize_t thinkpad_acpi_pdev_name_show(struct device *dev,
8129 struct device_attribute *attr,
8130 char *buf)
8131{
e0c7dfe7 8132 return snprintf(buf, PAGE_SIZE, "%s\n", TPACPI_NAME);
7fd40029
HMH		 8133}
8134
8135static struct device_attribute dev_attr_thinkpad_acpi_pdev_name =
8136 __ATTR(name, S_IRUGO, thinkpad_acpi_pdev_name_show, NULL);
8137
8138/* --------------------------------------------------------------------- */
8139
56b6aeb0 8140/* /proc support */
94954cc6 8141static struct proc_dir_entry *proc_dir;
16663a87 8142
56b6aeb0
HMH		 8143/*
8144 * Module and infrastructure proble, init and exit handling
8145 */
1da177e4 8146
b21a15f6
HMH		 8147static int force_load;
8148
fe08bc4b 8149#ifdef CONFIG_THINKPAD_ACPI_DEBUG
a5763f22 8150static const char * __init str_supported(int is_supported)
fe08bc4b 8151{
a5763f22 8152 static char text_unsupported[] __initdata = "not supported";
fe08bc4b 8153
a5763f22 8154 return (is_supported)? &text_unsupported[4] : &text_unsupported[0];
fe08bc4b
HMH		 8155}
8156#endif /* CONFIG_THINKPAD_ACPI_DEBUG */
8157
b21a15f6
HMH		 8158static void ibm_exit(struct ibm_struct *ibm)
8159{
8160 dbg_printk(TPACPI_DBG_EXIT, "removing %s\n", ibm->name);
8161
8162 list_del_init(&ibm->all_drivers);
8163
8164 if (ibm->flags.acpi_notify_installed) {
8165 dbg_printk(TPACPI_DBG_EXIT,
8166 "%s: acpi_remove_notify_handler\n", ibm->name);
8167 BUG_ON(!ibm->acpi);
8168 acpi_remove_notify_handler(*ibm->acpi->handle,
8169 ibm->acpi->type,
8170 dispatch_acpi_notify);
8171 ibm->flags.acpi_notify_installed = 0;
8172 ibm->flags.acpi_notify_installed = 0;
8173 }
8174
8175 if (ibm->flags.proc_created) {
8176 dbg_printk(TPACPI_DBG_EXIT,
8177 "%s: remove_proc_entry\n", ibm->name);
8178 remove_proc_entry(ibm->name, proc_dir);
8179 ibm->flags.proc_created = 0;
8180 }
8181
8182 if (ibm->flags.acpi_driver_registered) {
8183 dbg_printk(TPACPI_DBG_EXIT,
8184 "%s: acpi_bus_unregister_driver\n", ibm->name);
8185 BUG_ON(!ibm->acpi);
8186 acpi_bus_unregister_driver(ibm->acpi->driver);
8187 kfree(ibm->acpi->driver);
8188 ibm->acpi->driver = NULL;
8189 ibm->flags.acpi_driver_registered = 0;
8190 }
8191
8192 if (ibm->flags.init_called && ibm->exit) {
8193 ibm->exit();
8194 ibm->flags.init_called = 0;
8195 }
8196
8197 dbg_printk(TPACPI_DBG_INIT, "finished removing %s\n", ibm->name);
8198}
f74a27d4 8199
a5763f22 8200static int __init ibm_init(struct ibm_init_struct *iibm)
1da177e4
LT		 8201{
8202 int ret;
a5763f22 8203 struct ibm_struct *ibm = iibm->data;
1da177e4
LT		 8204 struct proc_dir_entry *entry;
8205
a5763f22
HMH		 8206 BUG_ON(ibm == NULL);
8207
8208 INIT_LIST_HEAD(&ibm->all_drivers);
8209
92641177 8210 if (ibm->flags.experimental && !experimental)
1da177e4
LT		 8211 return 0;
8212
fe08bc4b
HMH		 8213 dbg_printk(TPACPI_DBG_INIT,
8214 "probing for %s\n", ibm->name);
8215
a5763f22
HMH		 8216 if (iibm->init) {
8217 ret = iibm->init(iibm);
5fba344c
HMH		 8218 if (ret > 0)
8219 return 0; /* probe failed */
8220 if (ret)
1da177e4 8221 return ret;
a5763f22 8222
92641177 8223 ibm->flags.init_called = 1;
1da177e4
LT		 8224 }
8225
8d376cd6
HMH		 8226 if (ibm->acpi) {
8227 if (ibm->acpi->hid) {
8228 ret = register_tpacpi_subdriver(ibm);
8229 if (ret)
8230 goto err_out;
8231 }
5fba344c 8232
8d376cd6
HMH		 8233 if (ibm->acpi->notify) {
8234 ret = setup_acpi_notify(ibm);
8235 if (ret == -ENODEV) {
e0c7dfe7 8236 printk(TPACPI_NOTICE "disabling subdriver %s\n",
8d376cd6
HMH		 8237 ibm->name);
8238 ret = 0;
8239 goto err_out;
8240 }
8241 if (ret < 0)
8242 goto err_out;
5fba344c 8243 }
5fba344c
HMH		 8244 }
8245
fe08bc4b
HMH		 8246 dbg_printk(TPACPI_DBG_INIT,
8247 "%s installed\n", ibm->name);
8248
78f81cc4
BD		 8249 if (ibm->read) {
8250 entry = create_proc_entry(ibm->name,
8251 S_IFREG | S_IRUGO | S_IWUSR,
8252 proc_dir);
8253 if (!entry) {
e0c7dfe7 8254 printk(TPACPI_ERR "unable to create proc entry %s\n",
78f81cc4 8255 ibm->name);
5fba344c
HMH		 8256 ret = -ENODEV;
8257 goto err_out;
78f81cc4 8258 }
78f81cc4 8259 entry->data = ibm;
8d376cd6 8260 entry->read_proc = &dispatch_procfs_read;
78f81cc4 8261 if (ibm->write)
8d376cd6 8262 entry->write_proc = &dispatch_procfs_write;
92641177 8263 ibm->flags.proc_created = 1;
78f81cc4 8264 }
1da177e4 8265
a5763f22
HMH		 8266 list_add_tail(&ibm->all_drivers, &tpacpi_all_drivers);
8267
1da177e4 8268 return 0;
5fba344c
HMH		 8269
8270err_out:
fe08bc4b
HMH		 8271 dbg_printk(TPACPI_DBG_INIT,
8272 "%s: at error exit path with result %d\n",
8273 ibm->name, ret);
8274
5fba344c
HMH		 8275 ibm_exit(ibm);
8276 return (ret < 0)? ret : 0;
1da177e4
LT		 8277}
8278
56b6aeb0
HMH		 8279/* Probing */
8280
050df107
HMH		 8281static bool __pure __init tpacpi_is_fw_digit(const char c)
8282{
8283 return (c >= '0' && c <= '9') || (c >= 'A' && c <= 'Z');
8284}
8285
8286/* Most models: xxyTkkWW (#.##c); Ancient 570/600 and -SL lacks (#.##c) */
8287static bool __pure __init tpacpi_is_valid_fw_id(const char* const s,
8288 const char t)
8289{
8290 return s && strlen(s) >= 8 &&
8291 tpacpi_is_fw_digit(s[0]) &&
8292 tpacpi_is_fw_digit(s[1]) &&
8293 s[2] == t && s[3] == 'T' &&
8294 tpacpi_is_fw_digit(s[4]) &&
8295 tpacpi_is_fw_digit(s[5]) &&
8296 s[6] == 'W' && s[7] == 'W';
8297}
8298
bf20e740
HMH		 8299/* returns 0 - probe ok, or < 0 - probe error.
8300 * Probe ok doesn't mean thinkpad found.
8301 * On error, kfree() cleanup on tp->* is not performed, caller must do it */
8302static int __must_check __init get_thinkpad_model_data(
8303 struct thinkpad_id_data *tp)
1da177e4 8304{
1855256c 8305 const struct dmi_device *dev = NULL;
56b6aeb0 8306 char ec_fw_string[18];
bf20e740 8307 char const *s;
1da177e4 8308
d5a2f2f1 8309 if (!tp)
bf20e740 8310 return -EINVAL;
d5a2f2f1
HMH		 8311
8312 memset(tp, 0, sizeof(*tp));
8313
8314 if (dmi_name_in_vendors("IBM"))
8315 tp->vendor = PCI_VENDOR_ID_IBM;
8316 else if (dmi_name_in_vendors("LENOVO"))
8317 tp->vendor = PCI_VENDOR_ID_LENOVO;
8318 else
bf20e740 8319 return 0;
d5a2f2f1 8320
bf20e740
HMH		 8321 s = dmi_get_system_info(DMI_BIOS_VERSION);
8322 tp->bios_version_str = kstrdup(s, GFP_KERNEL);
8323 if (s && !tp->bios_version_str)
8324 return -ENOMEM;
050df107
HMH		 8325
8326 /* Really ancient ThinkPad 240X will fail this, which is fine */
8327 if (!tpacpi_is_valid_fw_id(tp->bios_version_str, 'E'))
bf20e740 8328 return 0;
050df107 8329
d5a2f2f1
HMH		 8330 tp->bios_model = tp->bios_version_str[0]
8331 | (tp->bios_version_str[1] << 8);
050df107
HMH		 8332 tp->bios_release = (tp->bios_version_str[4] << 8)
8333 | tp->bios_version_str[5];
d5a2f2f1 8334
56b6aeb0
HMH		 8335 /*
8336 * ThinkPad T23 or newer, A31 or newer, R50e or newer,
8337 * X32 or newer, all Z series; Some models must have an
8338 * up-to-date BIOS or they will not be detected.
8339 *
8340 * See http://thinkwiki.org/wiki/List_of_DMI_IDs
8341 */
8342 while ((dev = dmi_find_device(DMI_DEV_TYPE_OEM_STRING, NULL, dev))) {
8343 if (sscanf(dev->name,
8344 "IBM ThinkPad Embedded Controller -[%17c",
8345 ec_fw_string) == 1) {
8346 ec_fw_string[sizeof(ec_fw_string) - 1] = 0;
8347 ec_fw_string[strcspn(ec_fw_string, " ]")] = 0;
d5a2f2f1
HMH		 8348
8349 tp->ec_version_str = kstrdup(ec_fw_string, GFP_KERNEL);
bf20e740
HMH		 8350 if (!tp->ec_version_str)
8351 return -ENOMEM;
050df107
HMH		 8352
8353 if (tpacpi_is_valid_fw_id(ec_fw_string, 'H')) {
8354 tp->ec_model = ec_fw_string[0]
8355 | (ec_fw_string[1] << 8);
8356 tp->ec_release = (ec_fw_string[4] << 8)
8357 | ec_fw_string[5];
8358 } else {
8359 printk(TPACPI_NOTICE
8360 "ThinkPad firmware release %s "
8361 "doesn't match the known patterns\n",
8362 ec_fw_string);
8363 printk(TPACPI_NOTICE
8364 "please report this to %s\n",
8365 TPACPI_MAIL);
8366 }
d5a2f2f1 8367 break;
78f81cc4 8368 }
1da177e4 8369 }
d5a2f2f1 8370
bf20e740
HMH		 8371 s = dmi_get_system_info(DMI_PRODUCT_VERSION);
8372 if (s && !strnicmp(s, "ThinkPad", 8)) {
8373 tp->model_str = kstrdup(s, GFP_KERNEL);
8374 if (!tp->model_str)
8375 return -ENOMEM;
d5a2f2f1 8376 }
8c74adbc 8377
bf20e740
HMH		 8378 s = dmi_get_system_info(DMI_PRODUCT_NAME);
8379 tp->nummodel_str = kstrdup(s, GFP_KERNEL);
8380 if (s && !tp->nummodel_str)
8381 return -ENOMEM;
8382
8383 return 0;
1da177e4
LT		 8384}
8385
5fba344c
HMH		 8386static int __init probe_for_thinkpad(void)
8387{
8388 int is_thinkpad;
8389
8390 if (acpi_disabled)
8391 return -ENODEV;
8392
8393 /*
8394 * Non-ancient models have better DMI tagging, but very old models
e675abaf 8395 * don't. tpacpi_is_fw_known() is a cheat to help in that case.
5fba344c 8396 */
e675abaf
HMH		 8397 is_thinkpad = (thinkpad_id.model_str != NULL) ||
8398 (thinkpad_id.ec_model != 0) ||
8399 tpacpi_is_fw_known();
5fba344c
HMH		 8400
8401 /* ec is required because many other handles are relative to it */
e0c7dfe7 8402 TPACPI_ACPIHANDLE_INIT(ec);
5fba344c
HMH		 8403 if (!ec_handle) {
8404 if (is_thinkpad)
e0c7dfe7 8405 printk(TPACPI_ERR
5fba344c
HMH		 8406 "Not yet supported ThinkPad detected!\n");
8407 return -ENODEV;
8408 }
8409
0dcef77c
HMH		 8410 if (!is_thinkpad && !force_load)
8411 return -ENODEV;
8412
5fba344c
HMH		 8413 return 0;
8414}
8415
8416
56b6aeb0 8417/* Module init, exit, parameters */
1da177e4 8418
a5763f22
HMH		 8419static struct ibm_init_struct ibms_init[] __initdata = {
8420 {
8421 .init = thinkpad_acpi_driver_init,
8422 .data = &thinkpad_acpi_driver_data,
8423 },
8424 {
8425 .init = hotkey_init,
8426 .data = &hotkey_driver_data,
8427 },
8428 {
8429 .init = bluetooth_init,
8430 .data = &bluetooth_driver_data,
8431 },
8432 {
8433 .init = wan_init,
8434 .data = &wan_driver_data,
8435 },
0045c0aa
HMH		 8436 {
8437 .init = uwb_init,
8438 .data = &uwb_driver_data,
8439 },
d7c1d17d 8440#ifdef CONFIG_THINKPAD_ACPI_VIDEO
a5763f22
HMH		 8441 {
8442 .init = video_init,
8443 .data = &video_driver_data,
8444 },
d7c1d17d 8445#endif
a5763f22
HMH		 8446 {
8447 .init = light_init,
8448 .data = &light_driver_data,
8449 },
a5763f22
HMH		 8450 {
8451 .init = cmos_init,
8452 .data = &cmos_driver_data,
8453 },
8454 {
8455 .init = led_init,
8456 .data = &led_driver_data,
8457 },
8458 {
8459 .init = beep_init,
8460 .data = &beep_driver_data,
8461 },
8462 {
8463 .init = thermal_init,
8464 .data = &thermal_driver_data,
8465 },
8466 {
8467 .data = &ecdump_driver_data,
8468 },
8469 {
8470 .init = brightness_init,
8471 .data = &brightness_driver_data,
8472 },
8473 {
329e4e18 8474 .init = volume_init,
a5763f22
HMH		 8475 .data = &volume_driver_data,
8476 },
8477 {
8478 .init = fan_init,
8479 .data = &fan_driver_data,
8480 },
8481};
8482
3945ac36 8483static int __init set_ibm_param(const char *val, struct kernel_param *kp)
1da177e4
LT		 8484{
8485 unsigned int i;
a5763f22 8486 struct ibm_struct *ibm;
1da177e4 8487
59f91ff1
HMH		 8488 if (!kp || !kp->name || !val)
8489 return -EINVAL;
8490
a5763f22
HMH		 8491 for (i = 0; i < ARRAY_SIZE(ibms_init); i++) {
8492 ibm = ibms_init[i].data;
59f91ff1
HMH		 8493 WARN_ON(ibm == NULL);
8494
8495 if (!ibm || !ibm->name)
8496 continue;
a5763f22
HMH		 8497
8498 if (strcmp(ibm->name, kp->name) == 0 && ibm->write) {
8499 if (strlen(val) > sizeof(ibms_init[i].param) - 2)
78f81cc4 8500 return -ENOSPC;
a5763f22
HMH		 8501 strcpy(ibms_init[i].param, val);
8502 strcat(ibms_init[i].param, ",");
78f81cc4
BD		 8503 return 0;
8504 }
a5763f22 8505 }
1da177e4 8506
1da177e4
LT		 8507 return -EINVAL;
8508}
8509
b09c7225 8510module_param(experimental, int, 0444);
f68080f8 8511MODULE_PARM_DESC(experimental,
35ff8b9f 8512 "Enables experimental features when non-zero");
56b6aeb0 8513
132ce091 8514module_param_named(debug, dbg_level, uint, 0);
f68080f8 8515MODULE_PARM_DESC(debug, "Sets debug level bit-mask");
132ce091 8516
b09c7225 8517module_param(force_load, bool, 0444);
f68080f8 8518MODULE_PARM_DESC(force_load,
35ff8b9f
HMH		 8519 "Attempts to load the driver even on a "
8520 "mis-identified ThinkPad when true");
0dcef77c 8521
b09c7225 8522module_param_named(fan_control, fan_control_allowed, bool, 0444);
f68080f8 8523MODULE_PARM_DESC(fan_control,
35ff8b9f 8524 "Enables setting fan parameters features when true");
ecf2a80a 8525
b09c7225 8526module_param_named(brightness_mode, brightness_mode, uint, 0444);
f68080f8 8527MODULE_PARM_DESC(brightness_mode,
35ff8b9f 8528 "Selects brightness control strategy: "
0e501834 8529 "0=auto, 1=EC, 2=UCMS, 3=EC+NVRAM");
24d3b774 8530
b09c7225 8531module_param(brightness_enable, uint, 0444);
f68080f8 8532MODULE_PARM_DESC(brightness_enable,
35ff8b9f 8533 "Enables backlight control when 1, disables when 0");
87cc537a 8534
b09c7225 8535module_param(hotkey_report_mode, uint, 0444);
f68080f8 8536MODULE_PARM_DESC(hotkey_report_mode,
35ff8b9f
HMH		 8537 "used for backwards compatibility with userspace, "
8538 "see documentation");
ff80f137 8539
329e4e18
HMH		 8540module_param_named(volume_mode, volume_mode, uint, 0444);
8541MODULE_PARM_DESC(volume_mode,
8542 "Selects volume control strategy: "
8543 "0=auto, 1=EC, 2=N/A, 3=EC+NVRAM");
8544
a112ceee
HMH		 8545module_param_named(volume_capabilities, volume_capabilities, uint, 0444);
8546MODULE_PARM_DESC(volume_capabilities,
8547 "Selects the mixer capabilites: "
8548 "0=auto, 1=volume and mute, 2=mute only");
8549
c7ac6291
HMH		 8550module_param_named(volume_control, volume_control_allowed, bool, 0444);
8551MODULE_PARM_DESC(volume_control,
8552 "Enables software override for the console audio "
8553 "control when true");
8554
e0c7dfe7 8555#define TPACPI_PARAM(feature) \
f68080f8 8556 module_param_call(feature, set_ibm_param, NULL, NULL, 0); \
cbb14842 8557 MODULE_PARM_DESC(feature, "Simulates thinkpad-acpi procfs command " \
35ff8b9f 8558 "at module load, see documentation")
1da177e4 8559
e0c7dfe7
HMH		 8560TPACPI_PARAM(hotkey);
8561TPACPI_PARAM(bluetooth);
8562TPACPI_PARAM(video);
8563TPACPI_PARAM(light);
e0c7dfe7
HMH		 8564TPACPI_PARAM(cmos);
8565TPACPI_PARAM(led);
8566TPACPI_PARAM(beep);
8567TPACPI_PARAM(ecdump);
8568TPACPI_PARAM(brightness);
8569TPACPI_PARAM(volume);
8570TPACPI_PARAM(fan);
78f81cc4 8571
a73f3091 8572#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
b09c7225 8573module_param(dbg_wlswemul, uint, 0444);
a73f3091
HMH		 8574MODULE_PARM_DESC(dbg_wlswemul, "Enables WLSW emulation");
8575module_param_named(wlsw_state, tpacpi_wlsw_emulstate, bool, 0);
8576MODULE_PARM_DESC(wlsw_state,
8577 "Initial state of the emulated WLSW switch");
8578
b09c7225 8579module_param(dbg_bluetoothemul, uint, 0444);
a73f3091
HMH		 8580MODULE_PARM_DESC(dbg_bluetoothemul, "Enables bluetooth switch emulation");
8581module_param_named(bluetooth_state, tpacpi_bluetooth_emulstate, bool, 0);
8582MODULE_PARM_DESC(bluetooth_state,
8583 "Initial state of the emulated bluetooth switch");
8584
b09c7225 8585module_param(dbg_wwanemul, uint, 0444);
a73f3091
HMH		 8586MODULE_PARM_DESC(dbg_wwanemul, "Enables WWAN switch emulation");
8587module_param_named(wwan_state, tpacpi_wwan_emulstate, bool, 0);
8588MODULE_PARM_DESC(wwan_state,
8589 "Initial state of the emulated WWAN switch");
0045c0aa 8590
b09c7225 8591module_param(dbg_uwbemul, uint, 0444);
0045c0aa
HMH		 8592MODULE_PARM_DESC(dbg_uwbemul, "Enables UWB switch emulation");
8593module_param_named(uwb_state, tpacpi_uwb_emulstate, bool, 0);
8594MODULE_PARM_DESC(uwb_state,
8595 "Initial state of the emulated UWB switch");
a73f3091
HMH		 8596#endif
8597
b21a15f6
HMH		 8598static void thinkpad_acpi_module_exit(void)
8599{
8600 struct ibm_struct *ibm, *itmp;
8601
8602 tpacpi_lifecycle = TPACPI_LIFE_EXITING;
8603
8604 list_for_each_entry_safe_reverse(ibm, itmp,
8605 &tpacpi_all_drivers,
8606 all_drivers) {
8607 ibm_exit(ibm);
8608 }
8609
8610 dbg_printk(TPACPI_DBG_INIT, "finished subdriver exit path...\n");
8611
8612 if (tpacpi_inputdev) {
8613 if (tp_features.input_device_registered)
8614 input_unregister_device(tpacpi_inputdev);
8615 else
8616 input_free_device(tpacpi_inputdev);
8617 }
8618
8619 if (tpacpi_hwmon)
8620 hwmon_device_unregister(tpacpi_hwmon);
8621
8622 if (tp_features.sensors_pdev_attrs_registered)
8623 device_remove_file(&tpacpi_sensors_pdev->dev,
8624 &dev_attr_thinkpad_acpi_pdev_name);
8625 if (tpacpi_sensors_pdev)
8626 platform_device_unregister(tpacpi_sensors_pdev);
8627 if (tpacpi_pdev)
8628 platform_device_unregister(tpacpi_pdev);
8629
8630 if (tp_features.sensors_pdrv_attrs_registered)
8631 tpacpi_remove_driver_attributes(&tpacpi_hwmon_pdriver.driver);
8632 if (tp_features.platform_drv_attrs_registered)
8633 tpacpi_remove_driver_attributes(&tpacpi_pdriver.driver);
8634
8635 if (tp_features.sensors_pdrv_registered)
8636 platform_driver_unregister(&tpacpi_hwmon_pdriver);
8637
8638 if (tp_features.platform_drv_registered)
8639 platform_driver_unregister(&tpacpi_pdriver);
8640
8641 if (proc_dir)
e0c7dfe7 8642 remove_proc_entry(TPACPI_PROC_DIR, acpi_root_dir);
b21a15f6 8643
e0e3c061
HMH		 8644 if (tpacpi_wq)
8645 destroy_workqueue(tpacpi_wq);
8646
b21a15f6
HMH		 8647 kfree(thinkpad_id.bios_version_str);
8648 kfree(thinkpad_id.ec_version_str);
8649 kfree(thinkpad_id.model_str);
8650}
8651
f74a27d4 8652
1def7115 8653static int __init thinkpad_acpi_module_init(void)
1da177e4
LT		 8654{
8655 int ret, i;
8656
8fef502e
HMH		 8657 tpacpi_lifecycle = TPACPI_LIFE_INIT;
8658
ff80f137
HMH		 8659 /* Parameter checking */
8660 if (hotkey_report_mode > 2)
8661 return -EINVAL;
8662
54ae1501 8663 /* Driver-level probe */
d5a2f2f1 8664
bf20e740
HMH		 8665 ret = get_thinkpad_model_data(&thinkpad_id);
8666 if (ret) {
8667 printk(TPACPI_ERR
8668 "unable to get DMI data: %d\n", ret);
8669 thinkpad_acpi_module_exit();
8670 return ret;
8671 }
5fba344c 8672 ret = probe_for_thinkpad();
d5a2f2f1
HMH		 8673 if (ret) {
8674 thinkpad_acpi_module_exit();
5fba344c 8675 return ret;
d5a2f2f1 8676 }
1da177e4 8677
54ae1501 8678 /* Driver initialization */
d5a2f2f1 8679
e0c7dfe7
HMH		 8680 TPACPI_ACPIHANDLE_INIT(ecrd);
8681 TPACPI_ACPIHANDLE_INIT(ecwr);
1da177e4 8682
e0e3c061
HMH		 8683 tpacpi_wq = create_singlethread_workqueue(TPACPI_WORKQUEUE_NAME);
8684 if (!tpacpi_wq) {
8685 thinkpad_acpi_module_exit();
8686 return -ENOMEM;
8687 }
8688
e0c7dfe7 8689 proc_dir = proc_mkdir(TPACPI_PROC_DIR, acpi_root_dir);
1da177e4 8690 if (!proc_dir) {
35ff8b9f
HMH		 8691 printk(TPACPI_ERR
8692 "unable to create proc dir " TPACPI_PROC_DIR);
1def7115 8693 thinkpad_acpi_module_exit();
1da177e4
LT		 8694 return -ENODEV;
8695 }
78f81cc4 8696
54ae1501
HMH		 8697 ret = platform_driver_register(&tpacpi_pdriver);
8698 if (ret) {
35ff8b9f
HMH		 8699 printk(TPACPI_ERR
8700 "unable to register main platform driver\n");
54ae1501
HMH		 8701 thinkpad_acpi_module_exit();
8702 return ret;
8703 }
ac36393d
HMH		 8704 tp_features.platform_drv_registered = 1;
8705
7fd40029
HMH		 8706 ret = platform_driver_register(&tpacpi_hwmon_pdriver);
8707 if (ret) {
35ff8b9f
HMH		 8708 printk(TPACPI_ERR
8709 "unable to register hwmon platform driver\n");
7fd40029
HMH		 8710 thinkpad_acpi_module_exit();
8711 return ret;
8712 }
8713 tp_features.sensors_pdrv_registered = 1;
8714
176750d6 8715 ret = tpacpi_create_driver_attributes(&tpacpi_pdriver.driver);
2369cc94
HMH		 8716 if (!ret) {
8717 tp_features.platform_drv_attrs_registered = 1;
35ff8b9f
HMH		 8718 ret = tpacpi_create_driver_attributes(
8719 &tpacpi_hwmon_pdriver.driver);
2369cc94 8720 }
176750d6 8721 if (ret) {
35ff8b9f
HMH		 8722 printk(TPACPI_ERR
8723 "unable to create sysfs driver attributes\n");
176750d6
HMH		 8724 thinkpad_acpi_module_exit();
8725 return ret;
8726 }
2369cc94 8727 tp_features.sensors_pdrv_attrs_registered = 1;
176750d6 8728
54ae1501
HMH		 8729
8730 /* Device initialization */
e0c7dfe7 8731 tpacpi_pdev = platform_device_register_simple(TPACPI_DRVR_NAME, -1,
54ae1501
HMH		 8732 NULL, 0);
8733 if (IS_ERR(tpacpi_pdev)) {
8734 ret = PTR_ERR(tpacpi_pdev);
8735 tpacpi_pdev = NULL;
e0c7dfe7 8736 printk(TPACPI_ERR "unable to register platform device\n");
54ae1501
HMH		 8737 thinkpad_acpi_module_exit();
8738 return ret;
8739 }
7fd40029 8740 tpacpi_sensors_pdev = platform_device_register_simple(
35ff8b9f
HMH		 8741 TPACPI_HWMON_DRVR_NAME,
8742 -1, NULL, 0);
7fd40029
HMH		 8743 if (IS_ERR(tpacpi_sensors_pdev)) {
8744 ret = PTR_ERR(tpacpi_sensors_pdev);
8745 tpacpi_sensors_pdev = NULL;
35ff8b9f
HMH		 8746 printk(TPACPI_ERR
8747 "unable to register hwmon platform device\n");
7fd40029
HMH		 8748 thinkpad_acpi_module_exit();
8749 return ret;
8750 }
8751 ret = device_create_file(&tpacpi_sensors_pdev->dev,
8752 &dev_attr_thinkpad_acpi_pdev_name);
8753 if (ret) {
e0c7dfe7 8754 printk(TPACPI_ERR
35ff8b9f 8755 "unable to create sysfs hwmon device attributes\n");
7fd40029
HMH		 8756 thinkpad_acpi_module_exit();
8757 return ret;
8758 }
8759 tp_features.sensors_pdev_attrs_registered = 1;
8760 tpacpi_hwmon = hwmon_device_register(&tpacpi_sensors_pdev->dev);
54ae1501
HMH		 8761 if (IS_ERR(tpacpi_hwmon)) {
8762 ret = PTR_ERR(tpacpi_hwmon);
8763 tpacpi_hwmon = NULL;
e0c7dfe7 8764 printk(TPACPI_ERR "unable to register hwmon device\n");
54ae1501
HMH		 8765 thinkpad_acpi_module_exit();
8766 return ret;
8767 }
8523ed6f 8768 mutex_init(&tpacpi_inputdev_send_mutex);
7f5d1cd6
HMH		 8769 tpacpi_inputdev = input_allocate_device();
8770 if (!tpacpi_inputdev) {
e0c7dfe7 8771 printk(TPACPI_ERR "unable to allocate input device\n");
7f5d1cd6
HMH		 8772 thinkpad_acpi_module_exit();
8773 return -ENOMEM;
8774 } else {
8775 /* Prepare input device, but don't register */
8776 tpacpi_inputdev->name = "ThinkPad Extra Buttons";
e0c7dfe7 8777 tpacpi_inputdev->phys = TPACPI_DRVR_NAME "/input0";
7f5d1cd6 8778 tpacpi_inputdev->id.bustype = BUS_HOST;
edf0e0e5
HMH		 8779 tpacpi_inputdev->id.vendor = (thinkpad_id.vendor) ?
8780 thinkpad_id.vendor :
8781 PCI_VENDOR_ID_IBM;
7f5d1cd6
HMH		 8782 tpacpi_inputdev->id.product = TPACPI_HKEY_INPUT_PRODUCT;
8783 tpacpi_inputdev->id.version = TPACPI_HKEY_INPUT_VERSION;
d112ef95 8784 tpacpi_inputdev->dev.parent = &tpacpi_pdev->dev;
7f5d1cd6 8785 }
a5763f22
HMH		 8786 for (i = 0; i < ARRAY_SIZE(ibms_init); i++) {
8787 ret = ibm_init(&ibms_init[i]);
8788 if (ret >= 0 && *ibms_init[i].param)
8789 ret = ibms_init[i].data->write(ibms_init[i].param);
1da177e4 8790 if (ret < 0) {
1def7115 8791 thinkpad_acpi_module_exit();
1da177e4
LT		 8792 return ret;
8793 }
8794 }
7f5d1cd6
HMH		 8795 ret = input_register_device(tpacpi_inputdev);
8796 if (ret < 0) {
e0c7dfe7 8797 printk(TPACPI_ERR "unable to register input device\n");
7f5d1cd6
HMH		 8798 thinkpad_acpi_module_exit();
8799 return ret;
8800 } else {
8801 tp_features.input_device_registered = 1;
8802 }
1da177e4 8803
8fef502e 8804 tpacpi_lifecycle = TPACPI_LIFE_RUNNING;
1da177e4
LT		 8805 return 0;
8806}
8807
95e57ab2
HMH		 8808MODULE_ALIAS(TPACPI_DRVR_SHORTNAME);
8809
922fe097
HMH		 8810/*
8811 * This will autoload the driver in almost every ThinkPad
8812 * in widespread use.
8813 *
8814 * Only _VERY_ old models, like the 240, 240x and 570 lack
8815 * the HKEY event interface.
8816 */
8817MODULE_DEVICE_TABLE(acpi, ibm_htk_device_ids);
8818
f68080f8
HMH		 8819/*
8820 * DMI matching for module autoloading
8821 *
8822 * See http://thinkwiki.org/wiki/List_of_DMI_IDs
8823 * See http://thinkwiki.org/wiki/BIOS_Upgrade_Downloads
8824 *
8825 * Only models listed in thinkwiki will be supported, so add yours
8826 * if it is not there yet.
8827 */
8828#define IBM_BIOS_MODULE_ALIAS(__type) \
b36a50f9 8829 MODULE_ALIAS("dmi:bvnIBM:bvr" __type "ET??WW*")
f68080f8 8830
f68080f8
HMH		 8831/* Ancient thinkpad BIOSes have to be identified by
8832 * BIOS type or model number, and there are far less
8833 * BIOS types than model numbers... */
922fe097 8834IBM_BIOS_MODULE_ALIAS("I[MU]"); /* 570, 570e */
f68080f8 8835
f68f53a2
HMH		 8836MODULE_AUTHOR("Borislav Deianov <borislav@users.sf.net>");
8837MODULE_AUTHOR("Henrique de Moraes Holschuh <hmh@hmh.eng.br>");
e0c7dfe7
HMH		 8838MODULE_DESCRIPTION(TPACPI_DESC);
8839MODULE_VERSION(TPACPI_VERSION);
f68080f8
HMH		 8840MODULE_LICENSE("GPL");
8841
1def7115
HMH		 8842module_init(thinkpad_acpi_module_init);
8843module_exit(thinkpad_acpi_module_exit);
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