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acer-wmi: Fix capitalisation of GUID
[deliverable/linux.git] / drivers / platform / x86 / thinkpad_acpi.c
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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
5d2eb14d 24#define TPACPI_VERSION "0.24"
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>
5a0e3ad6 61#include <linux/slab.h>
0c78039f
HMH		 62
63#include <linux/nvram.h>
64#include <linux/proc_fs.h>
887965e6 65#include <linux/seq_file.h>
0c78039f
HMH		 66#include <linux/sysfs.h>
67#include <linux/backlight.h>
68#include <linux/fb.h>
69#include <linux/platform_device.h>
70#include <linux/hwmon.h>
71#include <linux/hwmon-sysfs.h>
72#include <linux/input.h>
4fa6811b 73#include <linux/leds.h>
0e74dc26 74#include <linux/rfkill.h>
0c78039f
HMH		 75#include <asm/uaccess.h>
76
77#include <linux/dmi.h>
78#include <linux/jiffies.h>
79#include <linux/workqueue.h>
80
0d204c34
HMH		 81#include <sound/core.h>
82#include <sound/control.h>
83#include <sound/initval.h>
84
0c78039f 85#include <acpi/acpi_drivers.h>
0c78039f
HMH		 86
87#include <linux/pci_ids.h>
88
0c78039f
HMH		 89
90/* ThinkPad CMOS commands */
91#define TP_CMOS_VOLUME_DOWN 0
92#define TP_CMOS_VOLUME_UP 1
93#define TP_CMOS_VOLUME_MUTE 2
94#define TP_CMOS_BRIGHTNESS_UP 4
95#define TP_CMOS_BRIGHTNESS_DOWN 5
4fa6811b
HMH		 96#define TP_CMOS_THINKLIGHT_ON 12
97#define TP_CMOS_THINKLIGHT_OFF 13
0c78039f
HMH		 98
99/* NVRAM Addresses */
100enum tp_nvram_addr {
101 TP_NVRAM_ADDR_HK2 = 0x57,
102 TP_NVRAM_ADDR_THINKLIGHT = 0x58,
103 TP_NVRAM_ADDR_VIDEO = 0x59,
104 TP_NVRAM_ADDR_BRIGHTNESS = 0x5e,
105 TP_NVRAM_ADDR_MIXER = 0x60,
106};
107
108/* NVRAM bit masks */
109enum {
110 TP_NVRAM_MASK_HKT_THINKPAD = 0x08,
111 TP_NVRAM_MASK_HKT_ZOOM = 0x20,
112 TP_NVRAM_MASK_HKT_DISPLAY = 0x40,
113 TP_NVRAM_MASK_HKT_HIBERNATE = 0x80,
114 TP_NVRAM_MASK_THINKLIGHT = 0x10,
115 TP_NVRAM_MASK_HKT_DISPEXPND = 0x30,
116 TP_NVRAM_MASK_HKT_BRIGHTNESS = 0x20,
117 TP_NVRAM_MASK_LEVEL_BRIGHTNESS = 0x0f,
118 TP_NVRAM_POS_LEVEL_BRIGHTNESS = 0,
119 TP_NVRAM_MASK_MUTE = 0x40,
120 TP_NVRAM_MASK_HKT_VOLUME = 0x80,
121 TP_NVRAM_MASK_LEVEL_VOLUME = 0x0f,
122 TP_NVRAM_POS_LEVEL_VOLUME = 0,
123};
124
5d756db9
HMH		 125/* Misc NVRAM-related */
126enum {
127 TP_NVRAM_LEVEL_VOLUME_MAX = 14,
128};
129
b21a15f6 130/* ACPI HIDs */
e0c7dfe7 131#define TPACPI_ACPI_HKEY_HID "IBM0068"
437e470c 132#define TPACPI_ACPI_EC_HID "PNP0C09"
b21a15f6
HMH		 133
134/* Input IDs */
135#define TPACPI_HKEY_INPUT_PRODUCT 0x5054 /* "TP" */
136#define TPACPI_HKEY_INPUT_VERSION 0x4101
137
153f8220
HMH		 138/* ACPI \WGSV commands */
139enum {
140 TP_ACPI_WGSV_GET_STATE = 0x01, /* Get state information */
141 TP_ACPI_WGSV_PWR_ON_ON_RESUME = 0x02, /* Resume WWAN powered on */
142 TP_ACPI_WGSV_PWR_OFF_ON_RESUME = 0x03, /* Resume WWAN powered off */
143 TP_ACPI_WGSV_SAVE_STATE = 0x04, /* Save state for S4/S5 */
144};
145
146/* TP_ACPI_WGSV_GET_STATE bits */
147enum {
148 TP_ACPI_WGSV_STATE_WWANEXIST = 0x0001, /* WWAN hw available */
149 TP_ACPI_WGSV_STATE_WWANPWR = 0x0002, /* WWAN radio enabled */
150 TP_ACPI_WGSV_STATE_WWANPWRRES = 0x0004, /* WWAN state at resume */
151 TP_ACPI_WGSV_STATE_WWANBIOSOFF = 0x0008, /* WWAN disabled in BIOS */
152 TP_ACPI_WGSV_STATE_BLTHEXIST = 0x0001, /* BLTH hw available */
153 TP_ACPI_WGSV_STATE_BLTHPWR = 0x0002, /* BLTH radio enabled */
154 TP_ACPI_WGSV_STATE_BLTHPWRRES = 0x0004, /* BLTH state at resume */
155 TP_ACPI_WGSV_STATE_BLTHBIOSOFF = 0x0008, /* BLTH disabled in BIOS */
156 TP_ACPI_WGSV_STATE_UWBEXIST = 0x0010, /* UWB hw available */
157 TP_ACPI_WGSV_STATE_UWBPWR = 0x0020, /* UWB radio enabled */
158};
b21a15f6 159
67bcae6e
HMH		 160/* HKEY events */
161enum tpacpi_hkey_event_t {
162 /* Hotkey-related */
163 TP_HKEY_EV_HOTKEY_BASE = 0x1001, /* first hotkey (FN+F1) */
164 TP_HKEY_EV_BRGHT_UP = 0x1010, /* Brightness up */
165 TP_HKEY_EV_BRGHT_DOWN = 0x1011, /* Brightness down */
166 TP_HKEY_EV_VOL_UP = 0x1015, /* Volume up or unmute */
167 TP_HKEY_EV_VOL_DOWN = 0x1016, /* Volume down or unmute */
168 TP_HKEY_EV_VOL_MUTE = 0x1017, /* Mixer output mute */
169
170 /* Reasons for waking up from S3/S4 */
171 TP_HKEY_EV_WKUP_S3_UNDOCK = 0x2304, /* undock requested, S3 */
172 TP_HKEY_EV_WKUP_S4_UNDOCK = 0x2404, /* undock requested, S4 */
173 TP_HKEY_EV_WKUP_S3_BAYEJ = 0x2305, /* bay ejection req, S3 */
174 TP_HKEY_EV_WKUP_S4_BAYEJ = 0x2405, /* bay ejection req, S4 */
175 TP_HKEY_EV_WKUP_S3_BATLOW = 0x2313, /* battery empty, S3 */
176 TP_HKEY_EV_WKUP_S4_BATLOW = 0x2413, /* battery empty, S4 */
177
178 /* Auto-sleep after eject request */
179 TP_HKEY_EV_BAYEJ_ACK = 0x3003, /* bay ejection complete */
180 TP_HKEY_EV_UNDOCK_ACK = 0x4003, /* undock complete */
181
182 /* Misc bay events */
183 TP_HKEY_EV_OPTDRV_EJ = 0x3006, /* opt. drive tray ejected */
184
185 /* User-interface events */
186 TP_HKEY_EV_LID_CLOSE = 0x5001, /* laptop lid closed */
187 TP_HKEY_EV_LID_OPEN = 0x5002, /* laptop lid opened */
188 TP_HKEY_EV_TABLET_TABLET = 0x5009, /* tablet swivel up */
189 TP_HKEY_EV_TABLET_NOTEBOOK = 0x500a, /* tablet swivel down */
190 TP_HKEY_EV_PEN_INSERTED = 0x500b, /* tablet pen inserted */
191 TP_HKEY_EV_PEN_REMOVED = 0x500c, /* tablet pen removed */
192 TP_HKEY_EV_BRGHT_CHANGED = 0x5010, /* backlight control event */
193
194 /* Thermal events */
195 TP_HKEY_EV_ALARM_BAT_HOT = 0x6011, /* battery too hot */
196 TP_HKEY_EV_ALARM_BAT_XHOT = 0x6012, /* battery critically hot */
197 TP_HKEY_EV_ALARM_SENSOR_HOT = 0x6021, /* sensor too hot */
198 TP_HKEY_EV_ALARM_SENSOR_XHOT = 0x6022, /* sensor critically hot */
199 TP_HKEY_EV_THM_TABLE_CHANGED = 0x6030, /* thermal table changed */
200
201 /* Misc */
202 TP_HKEY_EV_RFKILL_CHANGED = 0x7000, /* rfkill switch changed */
203};
204
b21a15f6
HMH		 205/****************************************************************************
206 * Main driver
207 */
208
e0c7dfe7
HMH		 209#define TPACPI_NAME "thinkpad"
210#define TPACPI_DESC "ThinkPad ACPI Extras"
211#define TPACPI_FILE TPACPI_NAME "_acpi"
212#define TPACPI_URL "http://ibm-acpi.sf.net/"
213#define TPACPI_MAIL "ibm-acpi-devel@lists.sourceforge.net"
b21a15f6 214
e0c7dfe7
HMH		 215#define TPACPI_PROC_DIR "ibm"
216#define TPACPI_ACPI_EVENT_PREFIX "ibm"
217#define TPACPI_DRVR_NAME TPACPI_FILE
95e57ab2 218#define TPACPI_DRVR_SHORTNAME "tpacpi"
e0c7dfe7 219#define TPACPI_HWMON_DRVR_NAME TPACPI_NAME "_hwmon"
b21a15f6 220
95e57ab2 221#define TPACPI_NVRAM_KTHREAD_NAME "ktpacpi_nvramd"
e0e3c061 222#define TPACPI_WORKQUEUE_NAME "ktpacpid"
95e57ab2 223
e0c7dfe7 224#define TPACPI_MAX_ACPI_ARGS 3
b21a15f6 225
7ff8d62f 226/* printk headers */
e0c7dfe7 227#define TPACPI_LOG TPACPI_FILE ": "
7ff8d62f
HMH		 228#define TPACPI_EMERG KERN_EMERG TPACPI_LOG
229#define TPACPI_ALERT KERN_ALERT TPACPI_LOG
230#define TPACPI_CRIT KERN_CRIT TPACPI_LOG
231#define TPACPI_ERR KERN_ERR TPACPI_LOG
232#define TPACPI_WARN KERN_WARNING TPACPI_LOG
233#define TPACPI_NOTICE KERN_NOTICE TPACPI_LOG
234#define TPACPI_INFO KERN_INFO TPACPI_LOG
235#define TPACPI_DEBUG KERN_DEBUG TPACPI_LOG
236
237/* Debugging printk groups */
0c78039f 238#define TPACPI_DBG_ALL 0xffff
73a94d86 239#define TPACPI_DBG_DISCLOSETASK 0x8000
0c78039f
HMH		 240#define TPACPI_DBG_INIT 0x0001
241#define TPACPI_DBG_EXIT 0x0002
bee4cd9b 242#define TPACPI_DBG_RFKILL 0x0004
56e2c200 243#define TPACPI_DBG_HKEY 0x0008
74a60c0f 244#define TPACPI_DBG_FAN 0x0010
0e501834 245#define TPACPI_DBG_BRGHT 0x0020
329e4e18 246#define TPACPI_DBG_MIXER 0x0040
0c78039f 247
35ff8b9f
HMH		 248#define onoff(status, bit) ((status) & (1 << (bit)) ? "on" : "off")
249#define enabled(status, bit) ((status) & (1 << (bit)) ? "enabled" : "disabled")
250#define strlencmp(a, b) (strncmp((a), (b), strlen(b)))
0c78039f 251
0c78039f
HMH		 252
253/****************************************************************************
b21a15f6 254 * Driver-wide structs and misc. variables
0c78039f
HMH		 255 */
256
257struct ibm_struct;
258
259struct tp_acpi_drv_struct {
260 const struct acpi_device_id *hid;
261 struct acpi_driver *driver;
262
263 void (*notify) (struct ibm_struct *, u32);
264 acpi_handle *handle;
265 u32 type;
266 struct acpi_device *device;
267};
268
269struct ibm_struct {
270 char *name;
271
887965e6 272 int (*read) (struct seq_file *);
0c78039f
HMH		 273 int (*write) (char *);
274 void (*exit) (void);
275 void (*resume) (void);
083f1760 276 void (*suspend) (pm_message_t state);
90d9d3c7 277 void (*shutdown) (void);
0c78039f
HMH		 278
279 struct list_head all_drivers;
280
281 struct tp_acpi_drv_struct *acpi;
282
283 struct {
284 u8 acpi_driver_registered:1;
285 u8 acpi_notify_installed:1;
286 u8 proc_created:1;
287 u8 init_called:1;
288 u8 experimental:1;
289 } flags;
290};
291
292struct ibm_init_struct {
293 char param[32];
294
295 int (*init) (struct ibm_init_struct *);
b525c06c 296 mode_t base_procfs_mode;
0c78039f
HMH		 297 struct ibm_struct *data;
298};
299
300static struct {
0c78039f
HMH		 301 u32 bluetooth:1;
302 u32 hotkey:1;
303 u32 hotkey_mask:1;
304 u32 hotkey_wlsw:1;
6c231bd5 305 u32 hotkey_tablet:1;
0c78039f
HMH		 306 u32 light:1;
307 u32 light_status:1;
b5972796 308 u32 bright_acpimode:1;
77775838 309 u32 bright_unkfw:1;
0c78039f 310 u32 wan:1;
0045c0aa 311 u32 uwb:1;
0c78039f 312 u32 fan_ctrl_status_undef:1;
d7377247 313 u32 second_fan:1;
60201732 314 u32 beep_needs_two_args:1;
a112ceee 315 u32 mixer_no_level_control:1;
0c78039f
HMH		 316 u32 input_device_registered:1;
317 u32 platform_drv_registered:1;
318 u32 platform_drv_attrs_registered:1;
319 u32 sensors_pdrv_registered:1;
320 u32 sensors_pdrv_attrs_registered:1;
321 u32 sensors_pdev_attrs_registered:1;
322 u32 hotkey_poll_active:1;
323} tp_features;
324
92889022
HMH		 325static struct {
326 u16 hotkey_mask_ff:1;
c7ac6291 327 u16 volume_ctrl_forbidden:1;
92889022
HMH		 328} tp_warned;
329
0c78039f
HMH		 330struct thinkpad_id_data {
331 unsigned int vendor; /* ThinkPad vendor:
332 * PCI_VENDOR_ID_IBM/PCI_VENDOR_ID_LENOVO */
333
334 char *bios_version_str; /* Something like 1ZET51WW (1.03z) */
335 char *ec_version_str; /* Something like 1ZHT51WW-1.04a */
336
050df107 337 u16 bios_model; /* 1Y = 0x5931, 0 = unknown */
0c78039f 338 u16 ec_model;
050df107
HMH		 339 u16 bios_release; /* 1ZETK1WW = 0x314b, 0 = unknown */
340 u16 ec_release;
0c78039f 341
8c74adbc
HMH		 342 char *model_str; /* ThinkPad T43 */
343 char *nummodel_str; /* 9384A9C for a 9384-A9C model */
0c78039f 344};
0c78039f
HMH		 345static struct thinkpad_id_data thinkpad_id;
346
8fef502e
HMH		 347static enum {
348 TPACPI_LIFE_INIT = 0,
349 TPACPI_LIFE_RUNNING,
350 TPACPI_LIFE_EXITING,
351} tpacpi_lifecycle;
352
b21a15f6
HMH		 353static int experimental;
354static u32 dbg_level;
355
e0e3c061
HMH		 356static struct workqueue_struct *tpacpi_wq;
357
75bd3bf2
HMH		 358enum led_status_t {
359 TPACPI_LED_OFF = 0,
360 TPACPI_LED_ON,
361 TPACPI_LED_BLINK,
362};
363
4fa6811b
HMH		 364/* Special LED class that can defer work */
365struct tpacpi_led_classdev {
366 struct led_classdev led_classdev;
367 struct work_struct work;
75bd3bf2 368 enum led_status_t new_state;
af116101 369 unsigned int led;
4fa6811b
HMH		 370};
371
77775838
HMH		 372/* brightness level capabilities */
373static unsigned int bright_maxlvl; /* 0 = unknown */
374
a73f3091
HMH		 375#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
376static int dbg_wlswemul;
377static int tpacpi_wlsw_emulstate;
378static int dbg_bluetoothemul;
379static int tpacpi_bluetooth_emulstate;
380static int dbg_wwanemul;
381static int tpacpi_wwan_emulstate;
0045c0aa
HMH		 382static int dbg_uwbemul;
383static int tpacpi_uwb_emulstate;
a73f3091
HMH		 384#endif
385
386
3dcc2c3b
HMH		 387/*************************************************************************
388 * Debugging helpers
389 */
390
391#define dbg_printk(a_dbg_level, format, arg...) \
392 do { if (dbg_level & (a_dbg_level)) \
393 printk(TPACPI_DEBUG "%s: " format, __func__ , ## arg); \
394 } while (0)
395
396#ifdef CONFIG_THINKPAD_ACPI_DEBUG
397#define vdbg_printk dbg_printk
398static const char *str_supported(int is_supported);
399#else
400#define vdbg_printk(a_dbg_level, format, arg...) \
401 do { } while (0)
402#endif
403
73a94d86
HMH		 404static void tpacpi_log_usertask(const char * const what)
405{
406 printk(TPACPI_DEBUG "%s: access by process with PID %d\n",
407 what, task_tgid_vnr(current));
408}
409
410#define tpacpi_disclose_usertask(what, format, arg...) \
411 do { \
412 if (unlikely( \
413 (dbg_level & TPACPI_DBG_DISCLOSETASK) && \
414 (tpacpi_lifecycle == TPACPI_LIFE_RUNNING))) { \
415 printk(TPACPI_DEBUG "%s: PID %d: " format, \
416 what, task_tgid_vnr(current), ## arg); \
417 } \
418 } while (0)
3dcc2c3b 419
7d95a3d5
HMH		 420/*
421 * Quirk handling helpers
422 *
423 * ThinkPad IDs and versions seen in the field so far
424 * are two-characters from the set [0-9A-Z], i.e. base 36.
425 *
426 * We use values well outside that range as specials.
427 */
428
429#define TPACPI_MATCH_ANY 0xffffU
430#define TPACPI_MATCH_UNKNOWN 0U
431
432/* TPID('1', 'Y') == 0x5931 */
433#define TPID(__c1, __c2) (((__c2) << 8) | (__c1))
434
435#define TPACPI_Q_IBM(__id1, __id2, __quirk) \
436 { .vendor = PCI_VENDOR_ID_IBM, \
437 .bios = TPID(__id1, __id2), \
438 .ec = TPACPI_MATCH_ANY, \
439 .quirks = (__quirk) }
440
441#define TPACPI_Q_LNV(__id1, __id2, __quirk) \
442 { .vendor = PCI_VENDOR_ID_LENOVO, \
443 .bios = TPID(__id1, __id2), \
444 .ec = TPACPI_MATCH_ANY, \
445 .quirks = (__quirk) }
446
a112ceee
HMH		 447#define TPACPI_QEC_LNV(__id1, __id2, __quirk) \
448 { .vendor = PCI_VENDOR_ID_LENOVO, \
449 .bios = TPACPI_MATCH_ANY, \
450 .ec = TPID(__id1, __id2), \
451 .quirks = (__quirk) }
452
7d95a3d5
HMH		 453struct tpacpi_quirk {
454 unsigned int vendor;
455 u16 bios;
456 u16 ec;
457 unsigned long quirks;
458};
459
460/**
461 * tpacpi_check_quirks() - search BIOS/EC version on a list
462 * @qlist: array of &struct tpacpi_quirk
463 * @qlist_size: number of elements in @qlist
464 *
465 * Iterates over a quirks list until one is found that matches the
466 * ThinkPad's vendor, BIOS and EC model.
467 *
468 * Returns 0 if nothing matches, otherwise returns the quirks field of
469 * the matching &struct tpacpi_quirk entry.
470 *
471 * The match criteria is: vendor, ec and bios much match.
472 */
473static unsigned long __init tpacpi_check_quirks(
474 const struct tpacpi_quirk *qlist,
475 unsigned int qlist_size)
476{
477 while (qlist_size) {
478 if ((qlist->vendor == thinkpad_id.vendor ||
479 qlist->vendor == TPACPI_MATCH_ANY) &&
480 (qlist->bios == thinkpad_id.bios_model ||
481 qlist->bios == TPACPI_MATCH_ANY) &&
482 (qlist->ec == thinkpad_id.ec_model ||
483 qlist->ec == TPACPI_MATCH_ANY))
484 return qlist->quirks;
485
486 qlist_size--;
487 qlist++;
488 }
489 return 0;
490}
491
e28393c0
HMH		 492static inline bool __pure __init tpacpi_is_lenovo(void)
493{
494 return thinkpad_id.vendor == PCI_VENDOR_ID_LENOVO;
495}
496
497static inline bool __pure __init tpacpi_is_ibm(void)
498{
499 return thinkpad_id.vendor == PCI_VENDOR_ID_IBM;
500}
7d95a3d5 501
56b6aeb0
HMH		 502/****************************************************************************
503 ****************************************************************************
504 *
505 * ACPI Helpers and device model
506 *
507 ****************************************************************************
508 ****************************************************************************/
509
510/*************************************************************************
511 * ACPI basic handles
512 */
1da177e4 513
94954cc6 514static acpi_handle root_handle;
437e470c 515static acpi_handle ec_handle;
1da177e4 516
e0c7dfe7 517#define TPACPI_HANDLE(object, parent, paths...) \
1da177e4 518 static acpi_handle object##_handle; \
ef07a5ab
HMH		 519 static const acpi_handle *object##_parent __initdata = \
520 &parent##_handle; \
521 static char *object##_paths[] __initdata = { paths }
1da177e4 522
e0c7dfe7
HMH		 523TPACPI_HANDLE(ecrd, ec, "ECRD"); /* 570 */
524TPACPI_HANDLE(ecwr, ec, "ECWR"); /* 570 */
78f81cc4 525
35ff8b9f
HMH		 526TPACPI_HANDLE(cmos, root, "\\UCMS", /* R50, R50e, R50p, R51, */
527 /* T4x, X31, X40 */
78f81cc4
BD		 528 "\\CMOS", /* A3x, G4x, R32, T23, T30, X22-24, X30 */
529 "\\CMS", /* R40, R40e */
56b6aeb0 530 ); /* all others */
78f81cc4 531
e0c7dfe7 532TPACPI_HANDLE(hkey, ec, "\\_SB.HKEY", /* 600e/x, 770e, 770x */
78f81cc4
BD		 533 "^HKEY", /* R30, R31 */
534 "HKEY", /* all others */
56b6aeb0 535 ); /* 570 */
78f81cc4 536
d7c1d17d
HMH		 537TPACPI_HANDLE(vid, root, "\\_SB.PCI.AGP.VGA", /* 570 */
538 "\\_SB.PCI0.AGP0.VID0", /* 600e/x, 770x */
539 "\\_SB.PCI0.VID0", /* 770e */
540 "\\_SB.PCI0.VID", /* A21e, G4x, R50e, X30, X40 */
a318930d 541 "\\_SB.PCI0.AGP.VGA", /* X100e and a few others */
d7c1d17d
HMH		 542 "\\_SB.PCI0.AGP.VID", /* all others */
543 ); /* R30, R31 */
544
78f81cc4 545
56b6aeb0
HMH		 546/*************************************************************************
547 * ACPI helpers
a8b7a662
HMH		 548 */
549
1da177e4
LT		 550static int acpi_evalf(acpi_handle handle,
551 void *res, char *method, char *fmt, ...)
552{
553 char *fmt0 = fmt;
78f81cc4 554 struct acpi_object_list params;
e0c7dfe7 555 union acpi_object in_objs[TPACPI_MAX_ACPI_ARGS];
78f81cc4
BD		 556 struct acpi_buffer result, *resultp;
557 union acpi_object out_obj;
558 acpi_status status;
559 va_list ap;
560 char res_type;
561 int success;
562 int quiet;
1da177e4
LT		 563
564 if (!*fmt) {
e0c7dfe7 565 printk(TPACPI_ERR "acpi_evalf() called with empty format\n");
1da177e4
LT		 566 return 0;
567 }
568
569 if (*fmt == 'q') {
570 quiet = 1;
571 fmt++;
572 } else
573 quiet = 0;
574
575 res_type = *(fmt++);
576
577 params.count = 0;
578 params.pointer = &in_objs[0];
579
580 va_start(ap, fmt);
581 while (*fmt) {
582 char c = *(fmt++);
583 switch (c) {
584 case 'd': /* int */
585 in_objs[params.count].integer.value = va_arg(ap, int);
586 in_objs[params.count++].type = ACPI_TYPE_INTEGER;
587 break;
78f81cc4 588 /* add more types as needed */
1da177e4 589 default:
e0c7dfe7 590 printk(TPACPI_ERR "acpi_evalf() called "
1da177e4 591 "with invalid format character '%c'\n", c);
21365851 592 va_end(ap);
1da177e4
LT		 593 return 0;
594 }
595 }
596 va_end(ap);
597
78f81cc4
BD		 598 if (res_type != 'v') {
599 result.length = sizeof(out_obj);
600 result.pointer = &out_obj;
601 resultp = &result;
602 } else
603 resultp = NULL;
1da177e4 604
78f81cc4 605 status = acpi_evaluate_object(handle, method, &params, resultp);
1da177e4
LT		 606
607 switch (res_type) {
78f81cc4 608 case 'd': /* int */
263f4a30
HMH		 609 success = (status == AE_OK &&
610 out_obj.type == ACPI_TYPE_INTEGER);
611 if (success && res)
1da177e4 612 *(int *)res = out_obj.integer.value;
1da177e4 613 break;
78f81cc4 614 case 'v': /* void */
1da177e4
LT		 615 success = status == AE_OK;
616 break;
78f81cc4 617 /* add more types as needed */
1da177e4 618 default:
e0c7dfe7 619 printk(TPACPI_ERR "acpi_evalf() called "
1da177e4
LT		 620 "with invalid format character '%c'\n", res_type);
621 return 0;
622 }
623
56b6aeb0 624 if (!success && !quiet)
263f4a30
HMH		 625 printk(TPACPI_ERR "acpi_evalf(%s, %s, ...) failed: %s\n",
626 method, fmt0, acpi_format_exception(status));
56b6aeb0
HMH		 627
628 return success;
629}
630
35ff8b9f 631static int acpi_ec_read(int i, u8 *p)
56b6aeb0
HMH		 632{
633 int v;
634
635 if (ecrd_handle) {
636 if (!acpi_evalf(ecrd_handle, &v, NULL, "dd", i))
637 return 0;
638 *p = v;
639 } else {
640 if (ec_read(i, p) < 0)
641 return 0;
642 }
643
644 return 1;
645}
646
647static int acpi_ec_write(int i, u8 v)
648{
649 if (ecwr_handle) {
650 if (!acpi_evalf(ecwr_handle, NULL, NULL, "vdd", i, v))
651 return 0;
652 } else {
653 if (ec_write(i, v) < 0)
654 return 0;
655 }
656
657 return 1;
658}
659
c9bea99c
HMH		 660static int issue_thinkpad_cmos_command(int cmos_cmd)
661{
662 if (!cmos_handle)
663 return -ENXIO;
664
665 if (!acpi_evalf(cmos_handle, NULL, NULL, "vd", cmos_cmd))
666 return -EIO;
667
668 return 0;
669}
670
56b6aeb0
HMH		 671/*************************************************************************
672 * ACPI device model
673 */
674
35ff8b9f
HMH		 675#define TPACPI_ACPIHANDLE_INIT(object) \
676 drv_acpi_handle_init(#object, &object##_handle, *object##_parent, \
ef07a5ab 677 object##_paths, ARRAY_SIZE(object##_paths))
f74a27d4 678
ef07a5ab
HMH		 679static void __init drv_acpi_handle_init(const char *name,
680 acpi_handle *handle, const acpi_handle parent,
681 char **paths, const int num_paths)
56b6aeb0
HMH		 682{
683 int i;
684 acpi_status status;
685
5ae930e6
HMH		 686 vdbg_printk(TPACPI_DBG_INIT, "trying to locate ACPI handle for %s\n",
687 name);
688
56b6aeb0
HMH		 689 for (i = 0; i < num_paths; i++) {
690 status = acpi_get_handle(parent, paths[i], handle);
691 if (ACPI_SUCCESS(status)) {
5ae930e6
HMH		 692 dbg_printk(TPACPI_DBG_INIT,
693 "Found ACPI handle %s for %s\n",
ef07a5ab 694 paths[i], name);
56b6aeb0
HMH		 695 return;
696 }
697 }
698
5ae930e6
HMH		 699 vdbg_printk(TPACPI_DBG_INIT, "ACPI handle for %s not found\n",
700 name);
56b6aeb0
HMH		 701 *handle = NULL;
702}
703
437e470c
HMH		 704static acpi_status __init tpacpi_acpi_handle_locate_callback(acpi_handle handle,
705 u32 level, void *context, void **return_value)
706{
707 *(acpi_handle *)return_value = handle;
708
709 return AE_CTRL_TERMINATE;
710}
711
712static void __init tpacpi_acpi_handle_locate(const char *name,
713 const char *hid,
714 acpi_handle *handle)
715{
716 acpi_status status;
717 acpi_handle device_found;
718
719 BUG_ON(!name || !hid || !handle);
720 vdbg_printk(TPACPI_DBG_INIT,
721 "trying to locate ACPI handle for %s, using HID %s\n",
722 name, hid);
723
724 memset(&device_found, 0, sizeof(device_found));
725 status = acpi_get_devices(hid, tpacpi_acpi_handle_locate_callback,
726 (void *)name, &device_found);
727
728 *handle = NULL;
729
730 if (ACPI_SUCCESS(status)) {
731 *handle = device_found;
732 dbg_printk(TPACPI_DBG_INIT,
733 "Found ACPI handle for %s\n", name);
734 } else {
735 vdbg_printk(TPACPI_DBG_INIT,
736 "Could not locate an ACPI handle for %s: %s\n",
737 name, acpi_format_exception(status));
738 }
739}
740
8d376cd6 741static void dispatch_acpi_notify(acpi_handle handle, u32 event, void *data)
56b6aeb0
HMH		 742{
743 struct ibm_struct *ibm = data;
744
8fef502e
HMH		 745 if (tpacpi_lifecycle != TPACPI_LIFE_RUNNING)
746 return;
747
8d376cd6 748 if (!ibm || !ibm->acpi || !ibm->acpi->notify)
56b6aeb0
HMH		 749 return;
750
8d376cd6 751 ibm->acpi->notify(ibm, event);
56b6aeb0
HMH		 752}
753
8d376cd6 754static int __init setup_acpi_notify(struct ibm_struct *ibm)
56b6aeb0
HMH		 755{
756 acpi_status status;
5ae930e6 757 int rc;
56b6aeb0 758
8d376cd6
HMH		 759 BUG_ON(!ibm->acpi);
760
761 if (!*ibm->acpi->handle)
56b6aeb0
HMH		 762 return 0;
763
5ae930e6 764 vdbg_printk(TPACPI_DBG_INIT,
fe08bc4b
HMH		 765 "setting up ACPI notify for %s\n", ibm->name);
766
5ae930e6
HMH		 767 rc = acpi_bus_get_device(*ibm->acpi->handle, &ibm->acpi->device);
768 if (rc < 0) {
e0c7dfe7 769 printk(TPACPI_ERR "acpi_bus_get_device(%s) failed: %d\n",
5ae930e6 770 ibm->name, rc);
56b6aeb0
HMH		 771 return -ENODEV;
772 }
773
db89b4f0 774 ibm->acpi->device->driver_data = ibm;
8d376cd6 775 sprintf(acpi_device_class(ibm->acpi->device), "%s/%s",
e0c7dfe7 776 TPACPI_ACPI_EVENT_PREFIX,
643f12db 777 ibm->name);
56b6aeb0 778
8d376cd6
HMH		 779 status = acpi_install_notify_handler(*ibm->acpi->handle,
780 ibm->acpi->type, dispatch_acpi_notify, ibm);
56b6aeb0
HMH		 781 if (ACPI_FAILURE(status)) {
782 if (status == AE_ALREADY_EXISTS) {
35ff8b9f
HMH		 783 printk(TPACPI_NOTICE
784 "another device driver is already "
785 "handling %s events\n", ibm->name);
56b6aeb0 786 } else {
35ff8b9f 787 printk(TPACPI_ERR
72f19921
HMH		 788 "acpi_install_notify_handler(%s) failed: %s\n",
789 ibm->name, acpi_format_exception(status));
56b6aeb0
HMH		 790 }
791 return -ENODEV;
792 }
8d376cd6 793 ibm->flags.acpi_notify_installed = 1;
56b6aeb0
HMH		 794 return 0;
795}
796
8d376cd6 797static int __init tpacpi_device_add(struct acpi_device *device)
56b6aeb0
HMH		 798{
799 return 0;
800}
801
6700121b 802static int __init register_tpacpi_subdriver(struct ibm_struct *ibm)
56b6aeb0 803{
5ae930e6 804 int rc;
56b6aeb0 805
fe08bc4b
HMH		 806 dbg_printk(TPACPI_DBG_INIT,
807 "registering %s as an ACPI driver\n", ibm->name);
808
8d376cd6
HMH		 809 BUG_ON(!ibm->acpi);
810
811 ibm->acpi->driver = kzalloc(sizeof(struct acpi_driver), GFP_KERNEL);
812 if (!ibm->acpi->driver) {
4f778b92
MK		 813 printk(TPACPI_ERR
814 "failed to allocate memory for ibm->acpi->driver\n");
5fba344c 815 return -ENOMEM;
56b6aeb0
HMH		 816 }
817
e0c7dfe7 818 sprintf(ibm->acpi->driver->name, "%s_%s", TPACPI_NAME, ibm->name);
8d376cd6 819 ibm->acpi->driver->ids = ibm->acpi->hid;
1ba90e3a 820
8d376cd6 821 ibm->acpi->driver->ops.add = &tpacpi_device_add;
56b6aeb0 822
5ae930e6
HMH		 823 rc = acpi_bus_register_driver(ibm->acpi->driver);
824 if (rc < 0) {
e0c7dfe7 825 printk(TPACPI_ERR "acpi_bus_register_driver(%s) failed: %d\n",
1ba90e3a 826 ibm->name, rc);
8d376cd6
HMH		 827 kfree(ibm->acpi->driver);
828 ibm->acpi->driver = NULL;
5ae930e6 829 } else if (!rc)
8d376cd6 830 ibm->flags.acpi_driver_registered = 1;
56b6aeb0 831
5ae930e6 832 return rc;
56b6aeb0
HMH		 833}
834
835
836/****************************************************************************
837 ****************************************************************************
838 *
839 * Procfs Helpers
840 *
841 ****************************************************************************
842 ****************************************************************************/
843
887965e6 844static int dispatch_proc_show(struct seq_file *m, void *v)
56b6aeb0 845{
887965e6 846 struct ibm_struct *ibm = m->private;
56b6aeb0
HMH		 847
848 if (!ibm || !ibm->read)
849 return -EINVAL;
887965e6
AD		 850 return ibm->read(m);
851}
56b6aeb0 852
887965e6
AD		 853static int dispatch_proc_open(struct inode *inode, struct file *file)
854{
855 return single_open(file, dispatch_proc_show, PDE(inode)->data);
56b6aeb0
HMH		 856}
857
887965e6 858static ssize_t dispatch_proc_write(struct file *file,
35ff8b9f 859 const char __user *userbuf,
887965e6 860 size_t count, loff_t *pos)
56b6aeb0 861{
887965e6 862 struct ibm_struct *ibm = PDE(file->f_path.dentry->d_inode)->data;
56b6aeb0
HMH		 863 char *kernbuf;
864 int ret;
865
866 if (!ibm || !ibm->write)
867 return -EINVAL;
5b05d469
MB		 868 if (count > PAGE_SIZE - 2)
869 return -EINVAL;
56b6aeb0
HMH		 870
871 kernbuf = kmalloc(count + 2, GFP_KERNEL);
872 if (!kernbuf)
873 return -ENOMEM;
1da177e4 874
56b6aeb0
HMH		 875 if (copy_from_user(kernbuf, userbuf, count)) {
876 kfree(kernbuf);
877 return -EFAULT;
878 }
1da177e4 879
56b6aeb0
HMH		 880 kernbuf[count] = 0;
881 strcat(kernbuf, ",");
882 ret = ibm->write(kernbuf);
883 if (ret == 0)
884 ret = count;
1da177e4 885
56b6aeb0
HMH		 886 kfree(kernbuf);
887
888 return ret;
1da177e4
LT		 889}
890
887965e6
AD		 891static const struct file_operations dispatch_proc_fops = {
892 .owner = THIS_MODULE,
893 .open = dispatch_proc_open,
894 .read = seq_read,
895 .llseek = seq_lseek,
896 .release = single_release,
897 .write = dispatch_proc_write,
898};
899
1da177e4
LT		 900static char *next_cmd(char **cmds)
901{
902 char *start = *cmds;
903 char *end;
904
905 while ((end = strchr(start, ',')) && end == start)
906 start = end + 1;
907
908 if (!end)
909 return NULL;
910
911 *end = 0;
912 *cmds = end + 1;
913 return start;
914}
915
56b6aeb0 916
54ae1501
HMH		 917/****************************************************************************
918 ****************************************************************************
919 *
7f5d1cd6 920 * Device model: input, hwmon and platform
54ae1501
HMH		 921 *
922 ****************************************************************************
923 ****************************************************************************/
924
94954cc6 925static struct platform_device *tpacpi_pdev;
7fd40029 926static struct platform_device *tpacpi_sensors_pdev;
1beeffe4 927static struct device *tpacpi_hwmon;
7f5d1cd6 928static struct input_dev *tpacpi_inputdev;
8523ed6f 929static struct mutex tpacpi_inputdev_send_mutex;
b21a15f6 930static LIST_HEAD(tpacpi_all_drivers);
e295e850 931
083f1760
HMH		 932static int tpacpi_suspend_handler(struct platform_device *pdev,
933 pm_message_t state)
934{
935 struct ibm_struct *ibm, *itmp;
936
937 list_for_each_entry_safe(ibm, itmp,
938 &tpacpi_all_drivers,
939 all_drivers) {
940 if (ibm->suspend)
941 (ibm->suspend)(state);
942 }
943
944 return 0;
945}
946
e295e850
HMH		 947static int tpacpi_resume_handler(struct platform_device *pdev)
948{
949 struct ibm_struct *ibm, *itmp;
950
951 list_for_each_entry_safe(ibm, itmp,
952 &tpacpi_all_drivers,
953 all_drivers) {
954 if (ibm->resume)
955 (ibm->resume)();
956 }
957
958 return 0;
959}
960
90d9d3c7
HMH		 961static void tpacpi_shutdown_handler(struct platform_device *pdev)
962{
963 struct ibm_struct *ibm, *itmp;
964
965 list_for_each_entry_safe(ibm, itmp,
966 &tpacpi_all_drivers,
967 all_drivers) {
968 if (ibm->shutdown)
969 (ibm->shutdown)();
970 }
971}
972
54ae1501
HMH		 973static struct platform_driver tpacpi_pdriver = {
974 .driver = {
e0c7dfe7 975 .name = TPACPI_DRVR_NAME,
54ae1501
HMH		 976 .owner = THIS_MODULE,
977 },
083f1760 978 .suspend = tpacpi_suspend_handler,
e295e850 979 .resume = tpacpi_resume_handler,
90d9d3c7 980 .shutdown = tpacpi_shutdown_handler,
54ae1501
HMH		 981};
982
7fd40029
HMH		 983static struct platform_driver tpacpi_hwmon_pdriver = {
984 .driver = {
e0c7dfe7 985 .name = TPACPI_HWMON_DRVR_NAME,
7fd40029
HMH		 986 .owner = THIS_MODULE,
987 },
988};
54ae1501 989
176750d6 990/*************************************************************************
b21a15f6 991 * sysfs support helpers
176750d6
HMH		 992 */
993
b21a15f6
HMH		 994struct attribute_set {
995 unsigned int members, max_members;
996 struct attribute_group group;
176750d6
HMH		 997};
998
7252374a
HMH		 999struct attribute_set_obj {
1000 struct attribute_set s;
1001 struct attribute *a;
1002} __attribute__((packed));
1003
1004static struct attribute_set *create_attr_set(unsigned int max_members,
35ff8b9f 1005 const char *name)
7252374a
HMH		 1006{
1007 struct attribute_set_obj *sobj;
1008
1009 if (max_members == 0)
1010 return NULL;
1011
1012 /* Allocates space for implicit NULL at the end too */
1013 sobj = kzalloc(sizeof(struct attribute_set_obj) +
1014 max_members * sizeof(struct attribute *),
1015 GFP_KERNEL);
1016 if (!sobj)
1017 return NULL;
1018 sobj->s.max_members = max_members;
1019 sobj->s.group.attrs = &sobj->a;
1020 sobj->s.group.name = name;
1021
1022 return &sobj->s;
1023}
1024
f74a27d4
HMH		 1025#define destroy_attr_set(_set) \
1026 kfree(_set);
1027
7252374a 1028/* not multi-threaded safe, use it in a single thread per set */
35ff8b9f 1029static int add_to_attr_set(struct attribute_set *s, struct attribute *attr)
7252374a
HMH		 1030{
1031 if (!s || !attr)
1032 return -EINVAL;
1033
1034 if (s->members >= s->max_members)
1035 return -ENOMEM;
1036
1037 s->group.attrs[s->members] = attr;
1038 s->members++;
1039
1040 return 0;
1041}
1042
35ff8b9f 1043static int add_many_to_attr_set(struct attribute_set *s,
7252374a
HMH		 1044 struct attribute **attr,
1045 unsigned int count)
1046{
1047 int i, res;
1048
1049 for (i = 0; i < count; i++) {
1050 res = add_to_attr_set(s, attr[i]);
1051 if (res)
1052 return res;
1053 }
1054
1055 return 0;
1056}
1057
35ff8b9f 1058static void delete_attr_set(struct attribute_set *s, struct kobject *kobj)
7252374a
HMH		 1059{
1060 sysfs_remove_group(kobj, &s->group);
1061 destroy_attr_set(s);
1062}
1063
f74a27d4
HMH		 1064#define register_attr_set_with_sysfs(_attr_set, _kobj) \
1065 sysfs_create_group(_kobj, &_attr_set->group)
1066
7252374a
HMH		 1067static int parse_strtoul(const char *buf,
1068 unsigned long max, unsigned long *value)
1069{
1070 char *endp;
1071
e7d2860b
AGR		 1072 *value = simple_strtoul(skip_spaces(buf), &endp, 0);
1073 endp = skip_spaces(endp);
7252374a
HMH		 1074 if (*endp || *value > max)
1075 return -EINVAL;
1076
1077 return 0;
1078}
1079
d64c81c4
HMH		 1080static void tpacpi_disable_brightness_delay(void)
1081{
1082 if (acpi_evalf(hkey_handle, NULL, "PWMS", "qvd", 0))
1083 printk(TPACPI_NOTICE
1084 "ACPI backlight control delay disabled\n");
1085}
1086
19d337df
JB		 1087static void printk_deprecated_attribute(const char * const what,
1088 const char * const details)
1089{
1090 tpacpi_log_usertask("deprecated sysfs attribute");
1091 printk(TPACPI_WARN "WARNING: sysfs attribute %s is deprecated and "
1092 "will be removed. %s\n",
1093 what, details);
1094}
1095
1096/*************************************************************************
1097 * rfkill and radio control support helpers
1098 */
1099
1100/*
1101 * ThinkPad-ACPI firmware handling model:
1102 *
1103 * WLSW (master wireless switch) is event-driven, and is common to all
1104 * firmware-controlled radios. It cannot be controlled, just monitored,
1105 * as expected. It overrides all radio state in firmware
1106 *
1107 * The kernel, a masked-off hotkey, and WLSW can change the radio state
1108 * (TODO: verify how WLSW interacts with the returned radio state).
1109 *
1110 * The only time there are shadow radio state changes, is when
1111 * masked-off hotkeys are used.
1112 */
1113
1114/*
1115 * Internal driver API for radio state:
1116 *
1117 * int: < 0 = error, otherwise enum tpacpi_rfkill_state
1118 * bool: true means radio blocked (off)
1119 */
1120enum tpacpi_rfkill_state {
1121 TPACPI_RFK_RADIO_OFF = 0,
1122 TPACPI_RFK_RADIO_ON
1123};
1124
1125/* rfkill switches */
1126enum tpacpi_rfk_id {
1127 TPACPI_RFK_BLUETOOTH_SW_ID = 0,
1128 TPACPI_RFK_WWAN_SW_ID,
1129 TPACPI_RFK_UWB_SW_ID,
1130 TPACPI_RFK_SW_MAX
1131};
1132
1133static const char *tpacpi_rfkill_names[] = {
1134 [TPACPI_RFK_BLUETOOTH_SW_ID] = "bluetooth",
1135 [TPACPI_RFK_WWAN_SW_ID] = "wwan",
1136 [TPACPI_RFK_UWB_SW_ID] = "uwb",
1137 [TPACPI_RFK_SW_MAX] = NULL
1138};
1139
1140/* ThinkPad-ACPI rfkill subdriver */
1141struct tpacpi_rfk {
1142 struct rfkill *rfkill;
1143 enum tpacpi_rfk_id id;
1144 const struct tpacpi_rfk_ops *ops;
1145};
1146
1147struct tpacpi_rfk_ops {
1148 /* firmware interface */
1149 int (*get_status)(void);
1150 int (*set_status)(const enum tpacpi_rfkill_state);
1151};
1152
1153static struct tpacpi_rfk *tpacpi_rfkill_switches[TPACPI_RFK_SW_MAX];
1154
1155/* Query FW and update rfkill sw state for a given rfkill switch */
1156static int tpacpi_rfk_update_swstate(const struct tpacpi_rfk *tp_rfk)
1157{
1158 int status;
1159
1160 if (!tp_rfk)
1161 return -ENODEV;
1162
1163 status = (tp_rfk->ops->get_status)();
1164 if (status < 0)
1165 return status;
1166
1167 rfkill_set_sw_state(tp_rfk->rfkill,
1168 (status == TPACPI_RFK_RADIO_OFF));
1169
1170 return status;
1171}
1172
1173/* Query FW and update rfkill sw state for all rfkill switches */
1174static void tpacpi_rfk_update_swstate_all(void)
1175{
1176 unsigned int i;
1177
1178 for (i = 0; i < TPACPI_RFK_SW_MAX; i++)
1179 tpacpi_rfk_update_swstate(tpacpi_rfkill_switches[i]);
1180}
1181
1182/*
1183 * Sync the HW-blocking state of all rfkill switches,
1184 * do notice it causes the rfkill core to schedule uevents
1185 */
1186static void tpacpi_rfk_update_hwblock_state(bool blocked)
1187{
1188 unsigned int i;
1189 struct tpacpi_rfk *tp_rfk;
1190
1191 for (i = 0; i < TPACPI_RFK_SW_MAX; i++) {
1192 tp_rfk = tpacpi_rfkill_switches[i];
1193 if (tp_rfk) {
1194 if (rfkill_set_hw_state(tp_rfk->rfkill,
1195 blocked)) {
1196 /* ignore -- we track sw block */
1197 }
1198 }
1199 }
1200}
1201
1202/* Call to get the WLSW state from the firmware */
1203static int hotkey_get_wlsw(void);
1204
1205/* Call to query WLSW state and update all rfkill switches */
1206static bool tpacpi_rfk_check_hwblock_state(void)
1207{
1208 int res = hotkey_get_wlsw();
1209 int hw_blocked;
1210
1211 /* When unknown or unsupported, we have to assume it is unblocked */
1212 if (res < 0)
1213 return false;
1214
1215 hw_blocked = (res == TPACPI_RFK_RADIO_OFF);
1216 tpacpi_rfk_update_hwblock_state(hw_blocked);
1217
1218 return hw_blocked;
1219}
1220
1221static int tpacpi_rfk_hook_set_block(void *data, bool blocked)
1222{
1223 struct tpacpi_rfk *tp_rfk = data;
1224 int res;
1225
1226 dbg_printk(TPACPI_DBG_RFKILL,
1227 "request to change radio state to %s\n",
1228 blocked ? "blocked" : "unblocked");
1229
1230 /* try to set radio state */
1231 res = (tp_rfk->ops->set_status)(blocked ?
1232 TPACPI_RFK_RADIO_OFF : TPACPI_RFK_RADIO_ON);
1233
1234 /* and update the rfkill core with whatever the FW really did */
1235 tpacpi_rfk_update_swstate(tp_rfk);
1236
1237 return (res < 0) ? res : 0;
1238}
1239
1240static const struct rfkill_ops tpacpi_rfk_rfkill_ops = {
1241 .set_block = tpacpi_rfk_hook_set_block,
1242};
1243
1244static int __init tpacpi_new_rfkill(const enum tpacpi_rfk_id id,
1245 const struct tpacpi_rfk_ops *tp_rfkops,
0e74dc26
HMH		 1246 const enum rfkill_type rfktype,
1247 const char *name,
19d337df 1248 const bool set_default)
0e74dc26 1249{
19d337df 1250 struct tpacpi_rfk *atp_rfk;
0e74dc26 1251 int res;
06d5caf4 1252 bool sw_state = false;
5451a923 1253 bool hw_state;
06d5caf4 1254 int sw_status;
90d9d3c7 1255
19d337df
JB		 1256 BUG_ON(id >= TPACPI_RFK_SW_MAX || tpacpi_rfkill_switches[id]);
1257
19d337df
JB		 1258 atp_rfk = kzalloc(sizeof(struct tpacpi_rfk), GFP_KERNEL);
1259 if (atp_rfk)
1260 atp_rfk->rfkill = rfkill_alloc(name,
1261 &tpacpi_pdev->dev,
1262 rfktype,
1263 &tpacpi_rfk_rfkill_ops,
1264 atp_rfk);
1265 if (!atp_rfk || !atp_rfk->rfkill) {
0e74dc26
HMH		 1266 printk(TPACPI_ERR
1267 "failed to allocate memory for rfkill class\n");
19d337df 1268 kfree(atp_rfk);
0e74dc26
HMH		 1269 return -ENOMEM;
1270 }
1271
19d337df
JB		 1272 atp_rfk->id = id;
1273 atp_rfk->ops = tp_rfkops;
0e74dc26 1274
06d5caf4
AJ		 1275 sw_status = (tp_rfkops->get_status)();
1276 if (sw_status < 0) {
b3fa1329
AJ		 1277 printk(TPACPI_ERR
1278 "failed to read initial state for %s, error %d\n",
06d5caf4 1279 name, sw_status);
b3fa1329 1280 } else {
06d5caf4 1281 sw_state = (sw_status == TPACPI_RFK_RADIO_OFF);
b3fa1329
AJ		 1282 if (set_default) {
1283 /* try to keep the initial state, since we ask the
1284 * firmware to preserve it across S5 in NVRAM */
06d5caf4 1285 rfkill_init_sw_state(atp_rfk->rfkill, sw_state);
b3fa1329
AJ		 1286 }
1287 }
5451a923
HMH		 1288 hw_state = tpacpi_rfk_check_hwblock_state();
1289 rfkill_set_hw_state(atp_rfk->rfkill, hw_state);
19d337df
JB		 1290
1291 res = rfkill_register(atp_rfk->rfkill);
0e74dc26
HMH		 1292 if (res < 0) {
1293 printk(TPACPI_ERR
1294 "failed to register %s rfkill switch: %d\n",
1295 name, res);
19d337df
JB		 1296 rfkill_destroy(atp_rfk->rfkill);
1297 kfree(atp_rfk);
0e74dc26
HMH		 1298 return res;
1299 }
1300
19d337df 1301 tpacpi_rfkill_switches[id] = atp_rfk;
5451a923
HMH		 1302
1303 printk(TPACPI_INFO "rfkill switch %s: radio is %sblocked\n",
1304 name, (sw_state || hw_state) ? "" : "un");
0e74dc26
HMH		 1305 return 0;
1306}
1307
19d337df 1308static void tpacpi_destroy_rfkill(const enum tpacpi_rfk_id id)
73a94d86 1309{
19d337df
JB		 1310 struct tpacpi_rfk *tp_rfk;
1311
1312 BUG_ON(id >= TPACPI_RFK_SW_MAX);
1313
1314 tp_rfk = tpacpi_rfkill_switches[id];
1315 if (tp_rfk) {
1316 rfkill_unregister(tp_rfk->rfkill);
5f0dadb4 1317 rfkill_destroy(tp_rfk->rfkill);
19d337df
JB		 1318 tpacpi_rfkill_switches[id] = NULL;
1319 kfree(tp_rfk);
1320 }
73a94d86
HMH		 1321}
1322
1323static void printk_deprecated_rfkill_attribute(const char * const what)
1324{
1325 printk_deprecated_attribute(what,
1326 "Please switch to generic rfkill before year 2010");
1327}
1328
19d337df
JB		 1329/* sysfs <radio> enable ------------------------------------------------ */
1330static ssize_t tpacpi_rfk_sysfs_enable_show(const enum tpacpi_rfk_id id,
1331 struct device_attribute *attr,
1332 char *buf)
1333{
1334 int status;
1335
1336 printk_deprecated_rfkill_attribute(attr->attr.name);
1337
1338 /* This is in the ABI... */
1339 if (tpacpi_rfk_check_hwblock_state()) {
1340 status = TPACPI_RFK_RADIO_OFF;
1341 } else {
1342 status = tpacpi_rfk_update_swstate(tpacpi_rfkill_switches[id]);
1343 if (status < 0)
1344 return status;
1345 }
1346
1347 return snprintf(buf, PAGE_SIZE, "%d\n",
1348 (status == TPACPI_RFK_RADIO_ON) ? 1 : 0);
1349}
1350
1351static ssize_t tpacpi_rfk_sysfs_enable_store(const enum tpacpi_rfk_id id,
1352 struct device_attribute *attr,
1353 const char *buf, size_t count)
1354{
1355 unsigned long t;
1356 int res;
1357
1358 printk_deprecated_rfkill_attribute(attr->attr.name);
1359
1360 if (parse_strtoul(buf, 1, &t))
1361 return -EINVAL;
1362
1363 tpacpi_disclose_usertask(attr->attr.name, "set to %ld\n", t);
1364
1365 /* This is in the ABI... */
1366 if (tpacpi_rfk_check_hwblock_state() && !!t)
1367 return -EPERM;
1368
1369 res = tpacpi_rfkill_switches[id]->ops->set_status((!!t) ?
1370 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF);
1371 tpacpi_rfk_update_swstate(tpacpi_rfkill_switches[id]);
1372
1373 return (res < 0) ? res : count;
1374}
1375
1376/* procfs -------------------------------------------------------------- */
887965e6 1377static int tpacpi_rfk_procfs_read(const enum tpacpi_rfk_id id, struct seq_file *m)
19d337df 1378{
19d337df 1379 if (id >= TPACPI_RFK_SW_MAX)
887965e6 1380 seq_printf(m, "status:\t\tnot supported\n");
19d337df
JB		 1381 else {
1382 int status;
1383
1384 /* This is in the ABI... */
1385 if (tpacpi_rfk_check_hwblock_state()) {
1386 status = TPACPI_RFK_RADIO_OFF;
1387 } else {
1388 status = tpacpi_rfk_update_swstate(
1389 tpacpi_rfkill_switches[id]);
1390 if (status < 0)
1391 return status;
1392 }
1393
887965e6 1394 seq_printf(m, "status:\t\t%s\n",
19d337df
JB		 1395 (status == TPACPI_RFK_RADIO_ON) ?
1396 "enabled" : "disabled");
887965e6 1397 seq_printf(m, "commands:\tenable, disable\n");
19d337df
JB		 1398 }
1399
887965e6 1400 return 0;
19d337df
JB		 1401}
1402
1403static int tpacpi_rfk_procfs_write(const enum tpacpi_rfk_id id, char *buf)
1404{
1405 char *cmd;
1406 int status = -1;
1407 int res = 0;
1408
1409 if (id >= TPACPI_RFK_SW_MAX)
1410 return -ENODEV;
1411
1412 while ((cmd = next_cmd(&buf))) {
1413 if (strlencmp(cmd, "enable") == 0)
1414 status = TPACPI_RFK_RADIO_ON;
1415 else if (strlencmp(cmd, "disable") == 0)
1416 status = TPACPI_RFK_RADIO_OFF;
1417 else
1418 return -EINVAL;
1419 }
1420
1421 if (status != -1) {
1422 tpacpi_disclose_usertask("procfs", "attempt to %s %s\n",
1423 (status == TPACPI_RFK_RADIO_ON) ?
1424 "enable" : "disable",
1425 tpacpi_rfkill_names[id]);
1426 res = (tpacpi_rfkill_switches[id]->ops->set_status)(status);
1427 tpacpi_rfk_update_swstate(tpacpi_rfkill_switches[id]);
1428 }
1429
1430 return res;
1431}
1432
56b6aeb0 1433/*************************************************************************
b21a15f6 1434 * thinkpad-acpi driver attributes
56b6aeb0
HMH		 1435 */
1436
b21a15f6
HMH		 1437/* interface_version --------------------------------------------------- */
1438static ssize_t tpacpi_driver_interface_version_show(
1439 struct device_driver *drv,
1440 char *buf)
1da177e4 1441{
b21a15f6
HMH		 1442 return snprintf(buf, PAGE_SIZE, "0x%08x\n", TPACPI_SYSFS_VERSION);
1443}
1444
1445static DRIVER_ATTR(interface_version, S_IRUGO,
1446 tpacpi_driver_interface_version_show, NULL);
1447
1448/* debug_level --------------------------------------------------------- */
1449static ssize_t tpacpi_driver_debug_show(struct device_driver *drv,
1450 char *buf)
1451{
1452 return snprintf(buf, PAGE_SIZE, "0x%04x\n", dbg_level);
1453}
1454
1455static ssize_t tpacpi_driver_debug_store(struct device_driver *drv,
1456 const char *buf, size_t count)
1457{
1458 unsigned long t;
1459
1460 if (parse_strtoul(buf, 0xffff, &t))
1461 return -EINVAL;
1462
1463 dbg_level = t;
1464
1465 return count;
1466}
1467
1468static DRIVER_ATTR(debug_level, S_IWUSR | S_IRUGO,
1469 tpacpi_driver_debug_show, tpacpi_driver_debug_store);
1470
1471/* version ------------------------------------------------------------- */
1472static ssize_t tpacpi_driver_version_show(struct device_driver *drv,
1473 char *buf)
1474{
35ff8b9f
HMH		 1475 return snprintf(buf, PAGE_SIZE, "%s v%s\n",
1476 TPACPI_DESC, TPACPI_VERSION);
b21a15f6
HMH		 1477}
1478
1479static DRIVER_ATTR(version, S_IRUGO,
1480 tpacpi_driver_version_show, NULL);
1481
1482/* --------------------------------------------------------------------- */
1483
a73f3091
HMH		 1484#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
1485
a73f3091
HMH		 1486/* wlsw_emulstate ------------------------------------------------------ */
1487static ssize_t tpacpi_driver_wlsw_emulstate_show(struct device_driver *drv,
1488 char *buf)
1489{
1490 return snprintf(buf, PAGE_SIZE, "%d\n", !!tpacpi_wlsw_emulstate);
1491}
1492
1493static ssize_t tpacpi_driver_wlsw_emulstate_store(struct device_driver *drv,
1494 const char *buf, size_t count)
1495{
1496 unsigned long t;
1497
1498 if (parse_strtoul(buf, 1, &t))
1499 return -EINVAL;
1500
19d337df 1501 if (tpacpi_wlsw_emulstate != !!t) {
a73f3091 1502 tpacpi_wlsw_emulstate = !!t;
19d337df
JB		 1503 tpacpi_rfk_update_hwblock_state(!t); /* negative logic */
1504 }
a73f3091
HMH		 1505
1506 return count;
1507}
1508
1509static DRIVER_ATTR(wlsw_emulstate, S_IWUSR | S_IRUGO,
1510 tpacpi_driver_wlsw_emulstate_show,
1511 tpacpi_driver_wlsw_emulstate_store);
1512
1513/* bluetooth_emulstate ------------------------------------------------- */
1514static ssize_t tpacpi_driver_bluetooth_emulstate_show(
1515 struct device_driver *drv,
1516 char *buf)
1517{
1518 return snprintf(buf, PAGE_SIZE, "%d\n", !!tpacpi_bluetooth_emulstate);
1519}
1520
1521static ssize_t tpacpi_driver_bluetooth_emulstate_store(
1522 struct device_driver *drv,
1523 const char *buf, size_t count)
1524{
1525 unsigned long t;
1526
1527 if (parse_strtoul(buf, 1, &t))
1528 return -EINVAL;
1529
1530 tpacpi_bluetooth_emulstate = !!t;
1531
1532 return count;
1533}
1534
1535static DRIVER_ATTR(bluetooth_emulstate, S_IWUSR | S_IRUGO,
1536 tpacpi_driver_bluetooth_emulstate_show,
1537 tpacpi_driver_bluetooth_emulstate_store);
1538
1539/* wwan_emulstate ------------------------------------------------- */
1540static ssize_t tpacpi_driver_wwan_emulstate_show(
1541 struct device_driver *drv,
1542 char *buf)
1543{
1544 return snprintf(buf, PAGE_SIZE, "%d\n", !!tpacpi_wwan_emulstate);
1545}
1546
1547static ssize_t tpacpi_driver_wwan_emulstate_store(
1548 struct device_driver *drv,
1549 const char *buf, size_t count)
1550{
1551 unsigned long t;
1552
1553 if (parse_strtoul(buf, 1, &t))
1554 return -EINVAL;
1555
1556 tpacpi_wwan_emulstate = !!t;
1557
1558 return count;
1559}
1560
1561static DRIVER_ATTR(wwan_emulstate, S_IWUSR | S_IRUGO,
1562 tpacpi_driver_wwan_emulstate_show,
1563 tpacpi_driver_wwan_emulstate_store);
1564
0045c0aa
HMH		 1565/* uwb_emulstate ------------------------------------------------- */
1566static ssize_t tpacpi_driver_uwb_emulstate_show(
1567 struct device_driver *drv,
1568 char *buf)
1569{
1570 return snprintf(buf, PAGE_SIZE, "%d\n", !!tpacpi_uwb_emulstate);
1571}
1572
1573static ssize_t tpacpi_driver_uwb_emulstate_store(
1574 struct device_driver *drv,
1575 const char *buf, size_t count)
1576{
1577 unsigned long t;
1578
1579 if (parse_strtoul(buf, 1, &t))
1580 return -EINVAL;
1581
1582 tpacpi_uwb_emulstate = !!t;
1583
1584 return count;
1585}
1586
1587static DRIVER_ATTR(uwb_emulstate, S_IWUSR | S_IRUGO,
1588 tpacpi_driver_uwb_emulstate_show,
1589 tpacpi_driver_uwb_emulstate_store);
a73f3091
HMH		 1590#endif
1591
1592/* --------------------------------------------------------------------- */
1593
35ff8b9f 1594static struct driver_attribute *tpacpi_driver_attributes[] = {
b21a15f6
HMH		 1595 &driver_attr_debug_level, &driver_attr_version,
1596 &driver_attr_interface_version,
1597};
1598
1599static int __init tpacpi_create_driver_attributes(struct device_driver *drv)
1600{
1601 int i, res;
1602
1603 i = 0;
1604 res = 0;
1605 while (!res && i < ARRAY_SIZE(tpacpi_driver_attributes)) {
1606 res = driver_create_file(drv, tpacpi_driver_attributes[i]);
1607 i++;
1608 }
1609
a73f3091
HMH		 1610#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
1611 if (!res && dbg_wlswemul)
1612 res = driver_create_file(drv, &driver_attr_wlsw_emulstate);
1613 if (!res && dbg_bluetoothemul)
1614 res = driver_create_file(drv, &driver_attr_bluetooth_emulstate);
1615 if (!res && dbg_wwanemul)
1616 res = driver_create_file(drv, &driver_attr_wwan_emulstate);
0045c0aa
HMH		 1617 if (!res && dbg_uwbemul)
1618 res = driver_create_file(drv, &driver_attr_uwb_emulstate);
a73f3091
HMH		 1619#endif
1620
b21a15f6
HMH		 1621 return res;
1622}
1623
1624static void tpacpi_remove_driver_attributes(struct device_driver *drv)
1625{
1626 int i;
1627
35ff8b9f 1628 for (i = 0; i < ARRAY_SIZE(tpacpi_driver_attributes); i++)
b21a15f6 1629 driver_remove_file(drv, tpacpi_driver_attributes[i]);
a73f3091
HMH		 1630
1631#ifdef THINKPAD_ACPI_DEBUGFACILITIES
1632 driver_remove_file(drv, &driver_attr_wlsw_emulstate);
1633 driver_remove_file(drv, &driver_attr_bluetooth_emulstate);
1634 driver_remove_file(drv, &driver_attr_wwan_emulstate);
0045c0aa 1635 driver_remove_file(drv, &driver_attr_uwb_emulstate);
a73f3091 1636#endif
b21a15f6
HMH		 1637}
1638
600a99fa
HMH		 1639/*************************************************************************
1640 * Firmware Data
1641 */
1642
1643/*
1644 * Table of recommended minimum BIOS versions
1645 *
1646 * Reasons for listing:
9ddc5b6f 1647 * 1. Stable BIOS, listed because the unknown amount of
600a99fa
HMH		 1648 * bugs and bad ACPI behaviour on older versions
1649 *
1650 * 2. BIOS or EC fw with known bugs that trigger on Linux
1651 *
1652 * 3. BIOS with known reduced functionality in older versions
1653 *
1654 * We recommend the latest BIOS and EC version.
1655 * We only support the latest BIOS and EC fw version as a rule.
1656 *
1657 * Sources: IBM ThinkPad Public Web Documents (update changelogs),
1658 * Information from users in ThinkWiki
e675abaf
HMH		 1659 *
1660 * WARNING: we use this table also to detect that the machine is
1661 * a ThinkPad in some cases, so don't remove entries lightly.
600a99fa
HMH		 1662 */
1663
1664#define TPV_Q(__v, __id1, __id2, __bv1, __bv2) \
1665 { .vendor = (__v), \
1666 .bios = TPID(__id1, __id2), \
1667 .ec = TPACPI_MATCH_ANY, \
1668 .quirks = TPACPI_MATCH_ANY << 16 \
1669 | (__bv1) << 8 | (__bv2) }
1670
1671#define TPV_Q_X(__v, __bid1, __bid2, __bv1, __bv2, \
275014ae 1672 __eid, __ev1, __ev2) \
600a99fa
HMH		 1673 { .vendor = (__v), \
1674 .bios = TPID(__bid1, __bid2), \
275014ae 1675 .ec = __eid, \
600a99fa
HMH		 1676 .quirks = (__ev1) << 24 | (__ev2) << 16 \
1677 | (__bv1) << 8 | (__bv2) }
1678
1679#define TPV_QI0(__id1, __id2, __bv1, __bv2) \
1680 TPV_Q(PCI_VENDOR_ID_IBM, __id1, __id2, __bv1, __bv2)
1681
275014ae 1682/* Outdated IBM BIOSes often lack the EC id string */
600a99fa
HMH		 1683#define TPV_QI1(__id1, __id2, __bv1, __bv2, __ev1, __ev2) \
1684 TPV_Q_X(PCI_VENDOR_ID_IBM, __id1, __id2, \
275014ae
HMH		 1685 __bv1, __bv2, TPID(__id1, __id2), \
1686 __ev1, __ev2), \
1687 TPV_Q_X(PCI_VENDOR_ID_IBM, __id1, __id2, \
1688 __bv1, __bv2, TPACPI_MATCH_UNKNOWN, \
1689 __ev1, __ev2)
600a99fa 1690
275014ae 1691/* Outdated IBM BIOSes often lack the EC id string */
600a99fa
HMH		 1692#define TPV_QI2(__bid1, __bid2, __bv1, __bv2, \
1693 __eid1, __eid2, __ev1, __ev2) \
1694 TPV_Q_X(PCI_VENDOR_ID_IBM, __bid1, __bid2, \
275014ae
HMH		 1695 __bv1, __bv2, TPID(__eid1, __eid2), \
1696 __ev1, __ev2), \
1697 TPV_Q_X(PCI_VENDOR_ID_IBM, __bid1, __bid2, \
1698 __bv1, __bv2, TPACPI_MATCH_UNKNOWN, \
1699 __ev1, __ev2)
600a99fa
HMH		 1700
1701#define TPV_QL0(__id1, __id2, __bv1, __bv2) \
1702 TPV_Q(PCI_VENDOR_ID_LENOVO, __id1, __id2, __bv1, __bv2)
1703
1704#define TPV_QL1(__id1, __id2, __bv1, __bv2, __ev1, __ev2) \
1705 TPV_Q_X(PCI_VENDOR_ID_LENOVO, __id1, __id2, \
275014ae
HMH		 1706 __bv1, __bv2, TPID(__id1, __id2), \
1707 __ev1, __ev2)
600a99fa
HMH		 1708
1709#define TPV_QL2(__bid1, __bid2, __bv1, __bv2, \
1710 __eid1, __eid2, __ev1, __ev2) \
1711 TPV_Q_X(PCI_VENDOR_ID_LENOVO, __bid1, __bid2, \
275014ae
HMH		 1712 __bv1, __bv2, TPID(__eid1, __eid2), \
1713 __ev1, __ev2)
600a99fa
HMH		 1714
1715static const struct tpacpi_quirk tpacpi_bios_version_qtable[] __initconst = {
1716 /* Numeric models ------------------ */
1717 /* FW MODEL BIOS VERS */
1718 TPV_QI0('I', 'M', '6', '5'), /* 570 */
1719 TPV_QI0('I', 'U', '2', '6'), /* 570E */
1720 TPV_QI0('I', 'B', '5', '4'), /* 600 */
1721 TPV_QI0('I', 'H', '4', '7'), /* 600E */
1722 TPV_QI0('I', 'N', '3', '6'), /* 600E */
1723 TPV_QI0('I', 'T', '5', '5'), /* 600X */
1724 TPV_QI0('I', 'D', '4', '8'), /* 770, 770E, 770ED */
1725 TPV_QI0('I', 'I', '4', '2'), /* 770X */
1726 TPV_QI0('I', 'O', '2', '3'), /* 770Z */
1727
1728 /* A-series ------------------------- */
1729 /* FW MODEL BIOS VERS EC VERS */
1730 TPV_QI0('I', 'W', '5', '9'), /* A20m */
1731 TPV_QI0('I', 'V', '6', '9'), /* A20p */
1732 TPV_QI0('1', '0', '2', '6'), /* A21e, A22e */
1733 TPV_QI0('K', 'U', '3', '6'), /* A21e */
1734 TPV_QI0('K', 'X', '3', '6'), /* A21m, A22m */
1735 TPV_QI0('K', 'Y', '3', '8'), /* A21p, A22p */
1736 TPV_QI0('1', 'B', '1', '7'), /* A22e */
1737 TPV_QI0('1', '3', '2', '0'), /* A22m */
1738 TPV_QI0('1', 'E', '7', '3'), /* A30/p (0) */
1739 TPV_QI1('1', 'G', '4', '1', '1', '7'), /* A31/p (0) */
1740 TPV_QI1('1', 'N', '1', '6', '0', '7'), /* A31/p (0) */
1741
1742 /* G-series ------------------------- */
1743 /* FW MODEL BIOS VERS */
1744 TPV_QI0('1', 'T', 'A', '6'), /* G40 */
1745 TPV_QI0('1', 'X', '5', '7'), /* G41 */
1746
1747 /* R-series, T-series --------------- */
1748 /* FW MODEL BIOS VERS EC VERS */
1749 TPV_QI0('1', 'C', 'F', '0'), /* R30 */
1750 TPV_QI0('1', 'F', 'F', '1'), /* R31 */
1751 TPV_QI0('1', 'M', '9', '7'), /* R32 */
1752 TPV_QI0('1', 'O', '6', '1'), /* R40 */
1753 TPV_QI0('1', 'P', '6', '5'), /* R40 */
1754 TPV_QI0('1', 'S', '7', '0'), /* R40e */
1755 TPV_QI1('1', 'R', 'D', 'R', '7', '1'), /* R50/p, R51,
1756 T40/p, T41/p, T42/p (1) */
1757 TPV_QI1('1', 'V', '7', '1', '2', '8'), /* R50e, R51 (1) */
1758 TPV_QI1('7', '8', '7', '1', '0', '6'), /* R51e (1) */
1759 TPV_QI1('7', '6', '6', '9', '1', '6'), /* R52 (1) */
1760 TPV_QI1('7', '0', '6', '9', '2', '8'), /* R52, T43 (1) */
1761
1762 TPV_QI0('I', 'Y', '6', '1'), /* T20 */
1763 TPV_QI0('K', 'Z', '3', '4'), /* T21 */
1764 TPV_QI0('1', '6', '3', '2'), /* T22 */
1765 TPV_QI1('1', 'A', '6', '4', '2', '3'), /* T23 (0) */
1766 TPV_QI1('1', 'I', '7', '1', '2', '0'), /* T30 (0) */
1767 TPV_QI1('1', 'Y', '6', '5', '2', '9'), /* T43/p (1) */
1768
1769 TPV_QL1('7', '9', 'E', '3', '5', '0'), /* T60/p */
1770 TPV_QL1('7', 'C', 'D', '2', '2', '2'), /* R60, R60i */
90765c6a 1771 TPV_QL1('7', 'E', 'D', '0', '1', '5'), /* R60e, R60i */
600a99fa
HMH		 1772
1773 /* BIOS FW BIOS VERS EC FW EC VERS */
1774 TPV_QI2('1', 'W', '9', '0', '1', 'V', '2', '8'), /* R50e (1) */
1775 TPV_QL2('7', 'I', '3', '4', '7', '9', '5', '0'), /* T60/p wide */
1776
1777 /* X-series ------------------------- */
1778 /* FW MODEL BIOS VERS EC VERS */
1779 TPV_QI0('I', 'Z', '9', 'D'), /* X20, X21 */
1780 TPV_QI0('1', 'D', '7', '0'), /* X22, X23, X24 */
1781 TPV_QI1('1', 'K', '4', '8', '1', '8'), /* X30 (0) */
1782 TPV_QI1('1', 'Q', '9', '7', '2', '3'), /* X31, X32 (0) */
1783 TPV_QI1('1', 'U', 'D', '3', 'B', '2'), /* X40 (0) */
1784 TPV_QI1('7', '4', '6', '4', '2', '7'), /* X41 (0) */
1785 TPV_QI1('7', '5', '6', '0', '2', '0'), /* X41t (0) */
1786
90765c6a
HMH		 1787 TPV_QL1('7', 'B', 'D', '7', '4', '0'), /* X60/s */
1788 TPV_QL1('7', 'J', '3', '0', '1', '3'), /* X60t */
600a99fa
HMH		 1789
1790 /* (0) - older versions lack DMI EC fw string and functionality */
1791 /* (1) - older versions known to lack functionality */
1792};
1793
1794#undef TPV_QL1
1795#undef TPV_QL0
1796#undef TPV_QI2
1797#undef TPV_QI1
1798#undef TPV_QI0
1799#undef TPV_Q_X
1800#undef TPV_Q
1801
1802static void __init tpacpi_check_outdated_fw(void)
1803{
1804 unsigned long fwvers;
1805 u16 ec_version, bios_version;
1806
1807 fwvers = tpacpi_check_quirks(tpacpi_bios_version_qtable,
1808 ARRAY_SIZE(tpacpi_bios_version_qtable));
1809
1810 if (!fwvers)
1811 return;
1812
1813 bios_version = fwvers & 0xffffU;
1814 ec_version = (fwvers >> 16) & 0xffffU;
1815
1816 /* note that unknown versions are set to 0x0000 and we use that */
1817 if ((bios_version > thinkpad_id.bios_release) ||
1818 (ec_version > thinkpad_id.ec_release &&
1819 ec_version != TPACPI_MATCH_ANY)) {
1820 /*
1821 * The changelogs would let us track down the exact
1822 * reason, but it is just too much of a pain to track
1823 * it. We only list BIOSes that are either really
1824 * broken, or really stable to begin with, so it is
1825 * best if the user upgrades the firmware anyway.
1826 */
1827 printk(TPACPI_WARN
1828 "WARNING: Outdated ThinkPad BIOS/EC firmware\n");
1829 printk(TPACPI_WARN
1830 "WARNING: This firmware may be missing critical bug "
1831 "fixes and/or important features\n");
1832 }
1833}
1834
e675abaf
HMH		 1835static bool __init tpacpi_is_fw_known(void)
1836{
1837 return tpacpi_check_quirks(tpacpi_bios_version_qtable,
1838 ARRAY_SIZE(tpacpi_bios_version_qtable)) != 0;
1839}
1840
b21a15f6
HMH		 1841/****************************************************************************
1842 ****************************************************************************
1843 *
1844 * Subdrivers
1845 *
1846 ****************************************************************************
1847 ****************************************************************************/
1848
1849/*************************************************************************
7a43f788 1850 * thinkpad-acpi metadata subdriver
b21a15f6
HMH		 1851 */
1852
887965e6 1853static int thinkpad_acpi_driver_read(struct seq_file *m)
1da177e4 1854{
887965e6
AD		 1855 seq_printf(m, "driver:\t\t%s\n", TPACPI_DESC);
1856 seq_printf(m, "version:\t%s\n", TPACPI_VERSION);
1857 return 0;
1da177e4
LT		 1858}
1859
a5763f22
HMH		 1860static struct ibm_struct thinkpad_acpi_driver_data = {
1861 .name = "driver",
1862 .read = thinkpad_acpi_driver_read,
1863};
1864
56b6aeb0
HMH		 1865/*************************************************************************
1866 * Hotkey subdriver
1867 */
1868
0d922e3b
HMH		 1869/*
1870 * ThinkPad firmware event model
1871 *
1872 * The ThinkPad firmware has two main event interfaces: normal ACPI
1873 * notifications (which follow the ACPI standard), and a private event
1874 * interface.
1875 *
1876 * The private event interface also issues events for the hotkeys. As
1877 * the driver gained features, the event handling code ended up being
1878 * built around the hotkey subdriver. This will need to be refactored
1879 * to a more formal event API eventually.
1880 *
1881 * Some "hotkeys" are actually supposed to be used as event reports,
1882 * such as "brightness has changed", "volume has changed", depending on
1883 * the ThinkPad model and how the firmware is operating.
1884 *
1885 * Unlike other classes, hotkey-class events have mask/unmask control on
1886 * non-ancient firmware. However, how it behaves changes a lot with the
1887 * firmware model and version.
1888 */
1889
f74a27d4
HMH		 1890enum { /* hot key scan codes (derived from ACPI DSDT) */
1891 TP_ACPI_HOTKEYSCAN_FNF1 = 0,
1892 TP_ACPI_HOTKEYSCAN_FNF2,
1893 TP_ACPI_HOTKEYSCAN_FNF3,
1894 TP_ACPI_HOTKEYSCAN_FNF4,
1895 TP_ACPI_HOTKEYSCAN_FNF5,
1896 TP_ACPI_HOTKEYSCAN_FNF6,
1897 TP_ACPI_HOTKEYSCAN_FNF7,
1898 TP_ACPI_HOTKEYSCAN_FNF8,
1899 TP_ACPI_HOTKEYSCAN_FNF9,
1900 TP_ACPI_HOTKEYSCAN_FNF10,
1901 TP_ACPI_HOTKEYSCAN_FNF11,
1902 TP_ACPI_HOTKEYSCAN_FNF12,
1903 TP_ACPI_HOTKEYSCAN_FNBACKSPACE,
1904 TP_ACPI_HOTKEYSCAN_FNINSERT,
1905 TP_ACPI_HOTKEYSCAN_FNDELETE,
1906 TP_ACPI_HOTKEYSCAN_FNHOME,
1907 TP_ACPI_HOTKEYSCAN_FNEND,
1908 TP_ACPI_HOTKEYSCAN_FNPAGEUP,
1909 TP_ACPI_HOTKEYSCAN_FNPAGEDOWN,
1910 TP_ACPI_HOTKEYSCAN_FNSPACE,
1911 TP_ACPI_HOTKEYSCAN_VOLUMEUP,
1912 TP_ACPI_HOTKEYSCAN_VOLUMEDOWN,
1913 TP_ACPI_HOTKEYSCAN_MUTE,
1914 TP_ACPI_HOTKEYSCAN_THINKPAD,
34a656d2
HMH		 1915 TP_ACPI_HOTKEYSCAN_UNK1,
1916 TP_ACPI_HOTKEYSCAN_UNK2,
1917 TP_ACPI_HOTKEYSCAN_UNK3,
1918 TP_ACPI_HOTKEYSCAN_UNK4,
1919 TP_ACPI_HOTKEYSCAN_UNK5,
1920 TP_ACPI_HOTKEYSCAN_UNK6,
1921 TP_ACPI_HOTKEYSCAN_UNK7,
1922 TP_ACPI_HOTKEYSCAN_UNK8,
1923
1924 /* Hotkey keymap size */
1925 TPACPI_HOTKEY_MAP_LEN
f74a27d4
HMH		 1926};
1927
0d922e3b 1928enum { /* Keys/events available through NVRAM polling */
01e88f25
HMH		 1929 TPACPI_HKEY_NVRAM_KNOWN_MASK = 0x00fb88c0U,
1930 TPACPI_HKEY_NVRAM_GOOD_MASK = 0x00fb8000U,
1931};
1932
1933enum { /* Positions of some of the keys in hotkey masks */
1934 TP_ACPI_HKEY_DISPSWTCH_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNF7,
1935 TP_ACPI_HKEY_DISPXPAND_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNF8,
1936 TP_ACPI_HKEY_HIBERNATE_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNF12,
1937 TP_ACPI_HKEY_BRGHTUP_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNHOME,
1938 TP_ACPI_HKEY_BRGHTDWN_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNEND,
1939 TP_ACPI_HKEY_THNKLGHT_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNPAGEUP,
1940 TP_ACPI_HKEY_ZOOM_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNSPACE,
1941 TP_ACPI_HKEY_VOLUP_MASK = 1 << TP_ACPI_HOTKEYSCAN_VOLUMEUP,
1942 TP_ACPI_HKEY_VOLDWN_MASK = 1 << TP_ACPI_HOTKEYSCAN_VOLUMEDOWN,
1943 TP_ACPI_HKEY_MUTE_MASK = 1 << TP_ACPI_HOTKEYSCAN_MUTE,
1944 TP_ACPI_HKEY_THINKPAD_MASK = 1 << TP_ACPI_HOTKEYSCAN_THINKPAD,
1945};
1946
1947enum { /* NVRAM to ACPI HKEY group map */
1948 TP_NVRAM_HKEY_GROUP_HK2 = TP_ACPI_HKEY_THINKPAD_MASK |
1949 TP_ACPI_HKEY_ZOOM_MASK |
1950 TP_ACPI_HKEY_DISPSWTCH_MASK |
1951 TP_ACPI_HKEY_HIBERNATE_MASK,
1952 TP_NVRAM_HKEY_GROUP_BRIGHTNESS = TP_ACPI_HKEY_BRGHTUP_MASK |
1953 TP_ACPI_HKEY_BRGHTDWN_MASK,
1954 TP_NVRAM_HKEY_GROUP_VOLUME = TP_ACPI_HKEY_VOLUP_MASK |
1955 TP_ACPI_HKEY_VOLDWN_MASK |
1956 TP_ACPI_HKEY_MUTE_MASK,
1957};
1958
1959#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
1960struct tp_nvram_state {
1961 u16 thinkpad_toggle:1;
1962 u16 zoom_toggle:1;
1963 u16 display_toggle:1;
1964 u16 thinklight_toggle:1;
1965 u16 hibernate_toggle:1;
1966 u16 displayexp_toggle:1;
1967 u16 display_state:1;
1968 u16 brightness_toggle:1;
1969 u16 volume_toggle:1;
1970 u16 mute:1;
1971
1972 u8 brightness_level;
1973 u8 volume_level;
1974};
1975
db25f16d 1976/* kthread for the hotkey poller */
01e88f25 1977static struct task_struct *tpacpi_hotkey_task;
db25f16d
HMH		 1978
1979/* Acquired while the poller kthread is running, use to sync start/stop */
01e88f25 1980static struct mutex hotkey_thread_mutex;
db25f16d
HMH		 1981
1982/*
0d922e3b
HMH		 1983 * Acquire mutex to write poller control variables as an
1984 * atomic block.
1985 *
1986 * Increment hotkey_config_change when changing them if you
1987 * want the kthread to forget old state.
db25f16d
HMH		 1988 *
1989 * See HOTKEY_CONFIG_CRITICAL_START/HOTKEY_CONFIG_CRITICAL_END
1990 */
01e88f25
HMH		 1991static struct mutex hotkey_thread_data_mutex;
1992static unsigned int hotkey_config_change;
1993
db25f16d
HMH		 1994/*
1995 * hotkey poller control variables
1996 *
1997 * Must be atomic or readers will also need to acquire mutex
0d922e3b
HMH		 1998 *
1999 * HOTKEY_CONFIG_CRITICAL_START/HOTKEY_CONFIG_CRITICAL_END
2000 * should be used only when the changes need to be taken as
2001 * a block, OR when one needs to force the kthread to forget
2002 * old state.
db25f16d
HMH		 2003 */
2004static u32 hotkey_source_mask; /* bit mask 0=ACPI,1=NVRAM */
2005static unsigned int hotkey_poll_freq = 10; /* Hz */
2006
2007#define HOTKEY_CONFIG_CRITICAL_START \
2008 do { \
2009 mutex_lock(&hotkey_thread_data_mutex); \
2010 hotkey_config_change++; \
2011 } while (0);
2012#define HOTKEY_CONFIG_CRITICAL_END \
2013 mutex_unlock(&hotkey_thread_data_mutex);
2014
01e88f25
HMH		 2015#else /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
2016
2017#define hotkey_source_mask 0U
db25f16d
HMH		 2018#define HOTKEY_CONFIG_CRITICAL_START
2019#define HOTKEY_CONFIG_CRITICAL_END
01e88f25
HMH		 2020
2021#endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
2022
f74a27d4
HMH		 2023static struct mutex hotkey_mutex;
2024
a713b4d7
HMH		 2025static enum { /* Reasons for waking up */
2026 TP_ACPI_WAKEUP_NONE = 0, /* None or unknown */
2027 TP_ACPI_WAKEUP_BAYEJ, /* Bay ejection request */
2028 TP_ACPI_WAKEUP_UNDOCK, /* Undock request */
2029} hotkey_wakeup_reason;
2030
2031static int hotkey_autosleep_ack;
2032
0d922e3b
HMH		 2033static u32 hotkey_orig_mask; /* events the BIOS had enabled */
2034static u32 hotkey_all_mask; /* all events supported in fw */
2035static u32 hotkey_reserved_mask; /* events better left disabled */
2036static u32 hotkey_driver_mask; /* events needed by the driver */
2037static u32 hotkey_user_mask; /* events visible to userspace */
2038static u32 hotkey_acpi_mask; /* events enabled in firmware */
6a38abbf 2039
b21a15f6
HMH		 2040static unsigned int hotkey_report_mode;
2041
edf0e0e5 2042static u16 *hotkey_keycode_map;
78f81cc4 2043
94954cc6 2044static struct attribute_set *hotkey_dev_attributes;
a0416420 2045
8b468c0c
HMH		 2046static void tpacpi_driver_event(const unsigned int hkey_event);
2047static void hotkey_driver_event(const unsigned int scancode);
7f0cf712 2048static void hotkey_poll_setup(const bool may_warn);
8b468c0c 2049
6c231bd5
HMH		 2050/* HKEY.MHKG() return bits */
2051#define TP_HOTKEY_TABLET_MASK (1 << 3)
2052
19d337df 2053static int hotkey_get_wlsw(void)
74941a69 2054{
19d337df
JB		 2055 int status;
2056
2057 if (!tp_features.hotkey_wlsw)
2058 return -ENODEV;
2059
a73f3091 2060#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
19d337df
JB		 2061 if (dbg_wlswemul)
2062 return (tpacpi_wlsw_emulstate) ?
2063 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF;
a73f3091 2064#endif
19d337df
JB		 2065
2066 if (!acpi_evalf(hkey_handle, &status, "WLSW", "d"))
74941a69 2067 return -EIO;
19d337df
JB		 2068
2069 return (status) ? TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF;
74941a69
HMH		 2070}
2071
6c231bd5
HMH		 2072static int hotkey_get_tablet_mode(int *status)
2073{
2074 int s;
2075
2076 if (!acpi_evalf(hkey_handle, &s, "MHKG", "d"))
2077 return -EIO;
2078
cee47f5a
HMH		 2079 *status = ((s & TP_HOTKEY_TABLET_MASK) != 0);
2080 return 0;
6c231bd5
HMH		 2081}
2082
b2c985e7 2083/*
0d922e3b
HMH		 2084 * Reads current event mask from firmware, and updates
2085 * hotkey_acpi_mask accordingly. Also resets any bits
2086 * from hotkey_user_mask that are unavailable to be
2087 * delivered (shadow requirement of the userspace ABI).
2088 *
b2c985e7
HMH		 2089 * Call with hotkey_mutex held
2090 */
2091static int hotkey_mask_get(void)
2092{
2093 if (tp_features.hotkey_mask) {
0d922e3b
HMH		 2094 u32 m = 0;
2095
01e88f25 2096 if (!acpi_evalf(hkey_handle, &m, "DHKN", "d"))
b2c985e7 2097 return -EIO;
0d922e3b
HMH		 2098
2099 hotkey_acpi_mask = m;
2100 } else {
2101 /* no mask support doesn't mean no event support... */
2102 hotkey_acpi_mask = hotkey_all_mask;
b2c985e7 2103 }
0d922e3b
HMH		 2104
2105 /* sync userspace-visible mask */
2106 hotkey_user_mask &= (hotkey_acpi_mask | hotkey_source_mask);
b2c985e7
HMH		 2107
2108 return 0;
2109}
2110
0d922e3b
HMH		 2111void static hotkey_mask_warn_incomplete_mask(void)
2112{
2113 /* log only what the user can fix... */
2114 const u32 wantedmask = hotkey_driver_mask &
2115 ~(hotkey_acpi_mask | hotkey_source_mask) &
2116 (hotkey_all_mask | TPACPI_HKEY_NVRAM_KNOWN_MASK);
2117
2118 if (wantedmask)
2119 printk(TPACPI_NOTICE
2120 "required events 0x%08x not enabled!\n",
2121 wantedmask);
2122}
2123
b2c985e7 2124/*
0d922e3b
HMH		 2125 * Set the firmware mask when supported
2126 *
2127 * Also calls hotkey_mask_get to update hotkey_acpi_mask.
2128 *
2129 * NOTE: does not set bits in hotkey_user_mask, but may reset them.
2130 *
b2c985e7
HMH		 2131 * Call with hotkey_mutex held
2132 */
2133static int hotkey_mask_set(u32 mask)
2134{
2135 int i;
2136 int rc = 0;
2137
0d922e3b 2138 const u32 fwmask = mask & ~hotkey_source_mask;
92889022 2139
0d922e3b 2140 if (tp_features.hotkey_mask) {
b2c985e7 2141 for (i = 0; i < 32; i++) {
b2c985e7
HMH		 2142 if (!acpi_evalf(hkey_handle,
2143 NULL, "MHKM", "vdd", i + 1,
0d922e3b 2144 !!(mask & (1 << i)))) {
b2c985e7
HMH		 2145 rc = -EIO;
2146 break;
b2c985e7
HMH		 2147 }
2148 }
0d922e3b 2149 }
b2c985e7 2150
0d922e3b
HMH		 2151 /*
2152 * We *must* make an inconditional call to hotkey_mask_get to
2153 * refresh hotkey_acpi_mask and update hotkey_user_mask
2154 *
2155 * Take the opportunity to also log when we cannot _enable_
2156 * a given event.
2157 */
2158 if (!hotkey_mask_get() && !rc && (fwmask & ~hotkey_acpi_mask)) {
2159 printk(TPACPI_NOTICE
2160 "asked for hotkey mask 0x%08x, but "
2161 "firmware forced it to 0x%08x\n",
2162 fwmask, hotkey_acpi_mask);
b2c985e7
HMH		 2163 }
2164
6b30eb7d
HMH		 2165 if (tpacpi_lifecycle != TPACPI_LIFE_EXITING)
2166 hotkey_mask_warn_incomplete_mask();
0d922e3b
HMH		 2167
2168 return rc;
2169}
2170
2171/*
2172 * Sets hotkey_user_mask and tries to set the firmware mask
2173 *
2174 * Call with hotkey_mutex held
2175 */
2176static int hotkey_user_mask_set(const u32 mask)
2177{
2178 int rc;
2179
2180 /* Give people a chance to notice they are doing something that
2181 * is bound to go boom on their users sooner or later */
2182 if (!tp_warned.hotkey_mask_ff &&
2183 (mask == 0xffff || mask == 0xffffff ||
2184 mask == 0xffffffff)) {
2185 tp_warned.hotkey_mask_ff = 1;
2186 printk(TPACPI_NOTICE
2187 "setting the hotkey mask to 0x%08x is likely "
2188 "not the best way to go about it\n", mask);
2189 printk(TPACPI_NOTICE
2190 "please consider using the driver defaults, "
2191 "and refer to up-to-date thinkpad-acpi "
2192 "documentation\n");
2193 }
2194
2195 /* Try to enable what the user asked for, plus whatever we need.
2196 * this syncs everything but won't enable bits in hotkey_user_mask */
2197 rc = hotkey_mask_set((mask | hotkey_driver_mask) & ~hotkey_source_mask);
2198
2199 /* Enable the available bits in hotkey_user_mask */
2200 hotkey_user_mask = mask & (hotkey_acpi_mask | hotkey_source_mask);
2201
b2c985e7
HMH		 2202 return rc;
2203}
2204
8b468c0c
HMH		 2205/*
2206 * Sets the driver hotkey mask.
2207 *
2208 * Can be called even if the hotkey subdriver is inactive
2209 */
2210static int tpacpi_hotkey_driver_mask_set(const u32 mask)
2211{
2212 int rc;
2213
2214 /* Do the right thing if hotkey_init has not been called yet */
2215 if (!tp_features.hotkey) {
2216 hotkey_driver_mask = mask;
2217 return 0;
2218 }
2219
2220 mutex_lock(&hotkey_mutex);
2221
2222 HOTKEY_CONFIG_CRITICAL_START
2223 hotkey_driver_mask = mask;
b684a363 2224#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
8b468c0c 2225 hotkey_source_mask |= (mask & ~hotkey_all_mask);
b684a363 2226#endif
8b468c0c
HMH		 2227 HOTKEY_CONFIG_CRITICAL_END
2228
2229 rc = hotkey_mask_set((hotkey_acpi_mask | hotkey_driver_mask) &
2230 ~hotkey_source_mask);
7f0cf712
HMH		 2231 hotkey_poll_setup(true);
2232
8b468c0c
HMH		 2233 mutex_unlock(&hotkey_mutex);
2234
2235 return rc;
2236}
2237
b2c985e7
HMH		 2238static int hotkey_status_get(int *status)
2239{
2240 if (!acpi_evalf(hkey_handle, status, "DHKC", "d"))
2241 return -EIO;
2242
2243 return 0;
2244}
2245
2586d566 2246static int hotkey_status_set(bool enable)
b2c985e7 2247{
2586d566 2248 if (!acpi_evalf(hkey_handle, NULL, "MHKC", "vd", enable ? 1 : 0))
b2c985e7
HMH		 2249 return -EIO;
2250
2251 return 0;
2252}
2253
6c231bd5 2254static void tpacpi_input_send_tabletsw(void)
b3ec6f91 2255{
6c231bd5 2256 int state;
b3ec6f91 2257
6c231bd5
HMH		 2258 if (tp_features.hotkey_tablet &&
2259 !hotkey_get_tablet_mode(&state)) {
2260 mutex_lock(&tpacpi_inputdev_send_mutex);
b3ec6f91 2261
6c231bd5
HMH		 2262 input_report_switch(tpacpi_inputdev,
2263 SW_TABLET_MODE, !!state);
2264 input_sync(tpacpi_inputdev);
2265
2266 mutex_unlock(&tpacpi_inputdev_send_mutex);
2267 }
b3ec6f91
HMH		 2268}
2269
0d922e3b
HMH		 2270/* Do NOT call without validating scancode first */
2271static void tpacpi_input_send_key(const unsigned int scancode)
b7c8c200 2272{
0d922e3b 2273 const unsigned int keycode = hotkey_keycode_map[scancode];
b7c8c200
HMH		 2274
2275 if (keycode != KEY_RESERVED) {
2276 mutex_lock(&tpacpi_inputdev_send_mutex);
2277
2278 input_report_key(tpacpi_inputdev, keycode, 1);
2279 if (keycode == KEY_UNKNOWN)
2280 input_event(tpacpi_inputdev, EV_MSC, MSC_SCAN,
2281 scancode);
2282 input_sync(tpacpi_inputdev);
2283
2284 input_report_key(tpacpi_inputdev, keycode, 0);
2285 if (keycode == KEY_UNKNOWN)
2286 input_event(tpacpi_inputdev, EV_MSC, MSC_SCAN,
2287 scancode);
2288 input_sync(tpacpi_inputdev);
2289
2290 mutex_unlock(&tpacpi_inputdev_send_mutex);
2291 }
2292}
2293
0d922e3b
HMH		 2294/* Do NOT call without validating scancode first */
2295static void tpacpi_input_send_key_masked(const unsigned int scancode)
2296{
8b468c0c 2297 hotkey_driver_event(scancode);
0d922e3b
HMH		 2298 if (hotkey_user_mask & (1 << scancode))
2299 tpacpi_input_send_key(scancode);
2300}
2301
01e88f25
HMH		 2302#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
2303static struct tp_acpi_drv_struct ibm_hotkey_acpidriver;
2304
0d922e3b 2305/* Do NOT call without validating scancode first */
01e88f25
HMH		 2306static void tpacpi_hotkey_send_key(unsigned int scancode)
2307{
0d922e3b 2308 tpacpi_input_send_key_masked(scancode);
01e88f25
HMH		 2309 if (hotkey_report_mode < 2) {
2310 acpi_bus_generate_proc_event(ibm_hotkey_acpidriver.device,
67bcae6e 2311 0x80, TP_HKEY_EV_HOTKEY_BASE + scancode);
01e88f25
HMH		 2312 }
2313}
2314
0d922e3b 2315static void hotkey_read_nvram(struct tp_nvram_state *n, const u32 m)
01e88f25
HMH		 2316{
2317 u8 d;
2318
2319 if (m & TP_NVRAM_HKEY_GROUP_HK2) {
2320 d = nvram_read_byte(TP_NVRAM_ADDR_HK2);
2321 n->thinkpad_toggle = !!(d & TP_NVRAM_MASK_HKT_THINKPAD);
2322 n->zoom_toggle = !!(d & TP_NVRAM_MASK_HKT_ZOOM);
2323 n->display_toggle = !!(d & TP_NVRAM_MASK_HKT_DISPLAY);
2324 n->hibernate_toggle = !!(d & TP_NVRAM_MASK_HKT_HIBERNATE);
2325 }
2326 if (m & TP_ACPI_HKEY_THNKLGHT_MASK) {
2327 d = nvram_read_byte(TP_NVRAM_ADDR_THINKLIGHT);
2328 n->thinklight_toggle = !!(d & TP_NVRAM_MASK_THINKLIGHT);
2329 }
2330 if (m & TP_ACPI_HKEY_DISPXPAND_MASK) {
2331 d = nvram_read_byte(TP_NVRAM_ADDR_VIDEO);
2332 n->displayexp_toggle =
2333 !!(d & TP_NVRAM_MASK_HKT_DISPEXPND);
2334 }
2335 if (m & TP_NVRAM_HKEY_GROUP_BRIGHTNESS) {
2336 d = nvram_read_byte(TP_NVRAM_ADDR_BRIGHTNESS);
2337 n->brightness_level = (d & TP_NVRAM_MASK_LEVEL_BRIGHTNESS)
2338 >> TP_NVRAM_POS_LEVEL_BRIGHTNESS;
2339 n->brightness_toggle =
2340 !!(d & TP_NVRAM_MASK_HKT_BRIGHTNESS);
2341 }
2342 if (m & TP_NVRAM_HKEY_GROUP_VOLUME) {
2343 d = nvram_read_byte(TP_NVRAM_ADDR_MIXER);
2344 n->volume_level = (d & TP_NVRAM_MASK_LEVEL_VOLUME)
2345 >> TP_NVRAM_POS_LEVEL_VOLUME;
2346 n->mute = !!(d & TP_NVRAM_MASK_MUTE);
2347 n->volume_toggle = !!(d & TP_NVRAM_MASK_HKT_VOLUME);
2348 }
2349}
2350
0d922e3b
HMH		 2351static void hotkey_compare_and_issue_event(struct tp_nvram_state *oldn,
2352 struct tp_nvram_state *newn,
2353 const u32 event_mask)
2354{
2355
01e88f25 2356#define TPACPI_COMPARE_KEY(__scancode, __member) \
35ff8b9f 2357 do { \
0d922e3b 2358 if ((event_mask & (1 << __scancode)) && \
35ff8b9f 2359 oldn->__member != newn->__member) \
0d922e3b 2360 tpacpi_hotkey_send_key(__scancode); \
35ff8b9f 2361 } while (0)
01e88f25
HMH		 2362
2363#define TPACPI_MAY_SEND_KEY(__scancode) \
0d922e3b
HMH		 2364 do { \
2365 if (event_mask & (1 << __scancode)) \
2366 tpacpi_hotkey_send_key(__scancode); \
2367 } while (0)
01e88f25 2368
5d756db9
HMH		 2369 void issue_volchange(const unsigned int oldvol,
2370 const unsigned int newvol)
2371 {
2372 unsigned int i = oldvol;
2373
2374 while (i > newvol) {
2375 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEDOWN);
2376 i--;
2377 }
2378 while (i < newvol) {
2379 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEUP);
2380 i++;
2381 }
2382 }
2383
28999022
HMH		 2384 void issue_brightnesschange(const unsigned int oldbrt,
2385 const unsigned int newbrt)
2386 {
2387 unsigned int i = oldbrt;
2388
2389 while (i > newbrt) {
2390 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNEND);
2391 i--;
2392 }
2393 while (i < newbrt) {
2394 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNHOME);
2395 i++;
2396 }
2397 }
2398
01e88f25
HMH		 2399 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_THINKPAD, thinkpad_toggle);
2400 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNSPACE, zoom_toggle);
2401 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNF7, display_toggle);
2402 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNF12, hibernate_toggle);
2403
2404 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNPAGEUP, thinklight_toggle);
2405
2406 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNF8, displayexp_toggle);
2407
5d756db9
HMH		 2408 /*
2409 * Handle volume
2410 *
2411 * This code is supposed to duplicate the IBM firmware behaviour:
2412 * - Pressing MUTE issues mute hotkey message, even when already mute
2413 * - Pressing Volume up/down issues volume up/down hotkey messages,
2414 * even when already at maximum or minumum volume
2415 * - The act of unmuting issues volume up/down notification,
2416 * depending which key was used to unmute
2417 *
2418 * We are constrained to what the NVRAM can tell us, which is not much
2419 * and certainly not enough if more than one volume hotkey was pressed
2420 * since the last poll cycle.
2421 *
2422 * Just to make our life interesting, some newer Lenovo ThinkPads have
2423 * bugs in the BIOS and may fail to update volume_toggle properly.
2424 */
2425 if (newn->mute) {
2426 /* muted */
2427 if (!oldn->mute ||
2428 oldn->volume_toggle != newn->volume_toggle ||
2429 oldn->volume_level != newn->volume_level) {
2430 /* recently muted, or repeated mute keypress, or
2431 * multiple presses ending in mute */
2432 issue_volchange(oldn->volume_level, newn->volume_level);
01e88f25
HMH		 2433 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_MUTE);
2434 }
5d756db9
HMH		 2435 } else {
2436 /* unmute */
2437 if (oldn->mute) {
2438 /* recently unmuted, issue 'unmute' keypress */
01e88f25 2439 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEUP);
5d756db9
HMH		 2440 }
2441 if (oldn->volume_level != newn->volume_level) {
2442 issue_volchange(oldn->volume_level, newn->volume_level);
2443 } else if (oldn->volume_toggle != newn->volume_toggle) {
2444 /* repeated vol up/down keypress at end of scale ? */
2445 if (newn->volume_level == 0)
01e88f25 2446 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEDOWN);
5d756db9
HMH		 2447 else if (newn->volume_level >= TP_NVRAM_LEVEL_VOLUME_MAX)
2448 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEUP);
01e88f25
HMH		 2449 }
2450 }
2451
2452 /* handle brightness */
28999022
HMH		 2453 if (oldn->brightness_level != newn->brightness_level) {
2454 issue_brightnesschange(oldn->brightness_level,
2455 newn->brightness_level);
2456 } else if (oldn->brightness_toggle != newn->brightness_toggle) {
2457 /* repeated key presses that didn't change state */
2458 if (newn->brightness_level == 0)
01e88f25 2459 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNEND);
28999022
HMH		 2460 else if (newn->brightness_level >= bright_maxlvl
2461 && !tp_features.bright_unkfw)
2462 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNHOME);
01e88f25 2463 }
01e88f25
HMH		 2464
2465#undef TPACPI_COMPARE_KEY
2466#undef TPACPI_MAY_SEND_KEY
0d922e3b 2467}
01e88f25 2468
0d922e3b
HMH		 2469/*
2470 * Polling driver
2471 *
2472 * We track all events in hotkey_source_mask all the time, since
2473 * most of them are edge-based. We only issue those requested by
2474 * hotkey_user_mask or hotkey_driver_mask, though.
2475 */
01e88f25
HMH		 2476static int hotkey_kthread(void *data)
2477{
2478 struct tp_nvram_state s[2];
0d922e3b 2479 u32 poll_mask, event_mask;
01e88f25
HMH		 2480 unsigned int si, so;
2481 unsigned long t;
2482 unsigned int change_detector, must_reset;
db25f16d 2483 unsigned int poll_freq;
01e88f25
HMH		 2484
2485 mutex_lock(&hotkey_thread_mutex);
2486
2487 if (tpacpi_lifecycle == TPACPI_LIFE_EXITING)
2488 goto exit;
2489
2490 set_freezable();
2491
2492 so = 0;
2493 si = 1;
2494 t = 0;
2495
2496 /* Initial state for compares */
2497 mutex_lock(&hotkey_thread_data_mutex);
2498 change_detector = hotkey_config_change;
0d922e3b
HMH		 2499 poll_mask = hotkey_source_mask;
2500 event_mask = hotkey_source_mask &
2501 (hotkey_driver_mask | hotkey_user_mask);
db25f16d 2502 poll_freq = hotkey_poll_freq;
01e88f25 2503 mutex_unlock(&hotkey_thread_data_mutex);
0d922e3b 2504 hotkey_read_nvram(&s[so], poll_mask);
01e88f25 2505
db25f16d
HMH		 2506 while (!kthread_should_stop()) {
2507 if (t == 0) {
2508 if (likely(poll_freq))
2509 t = 1000/poll_freq;
2510 else
2511 t = 100; /* should never happen... */
2512 }
01e88f25
HMH		 2513 t = msleep_interruptible(t);
2514 if (unlikely(kthread_should_stop()))
2515 break;
2516 must_reset = try_to_freeze();
2517 if (t > 0 && !must_reset)
2518 continue;
2519
2520 mutex_lock(&hotkey_thread_data_mutex);
2521 if (must_reset || hotkey_config_change != change_detector) {
2522 /* forget old state on thaw or config change */
2523 si = so;
2524 t = 0;
2525 change_detector = hotkey_config_change;
2526 }
0d922e3b
HMH		 2527 poll_mask = hotkey_source_mask;
2528 event_mask = hotkey_source_mask &
2529 (hotkey_driver_mask | hotkey_user_mask);
db25f16d 2530 poll_freq = hotkey_poll_freq;
01e88f25
HMH		 2531 mutex_unlock(&hotkey_thread_data_mutex);
2532
0d922e3b
HMH		 2533 if (likely(poll_mask)) {
2534 hotkey_read_nvram(&s[si], poll_mask);
01e88f25
HMH		 2535 if (likely(si != so)) {
2536 hotkey_compare_and_issue_event(&s[so], &s[si],
0d922e3b 2537 event_mask);
01e88f25
HMH		 2538 }
2539 }
2540
2541 so = si;
2542 si ^= 1;
2543 }
2544
2545exit:
2546 mutex_unlock(&hotkey_thread_mutex);
2547 return 0;
2548}
2549
db25f16d 2550/* call with hotkey_mutex held */
01e88f25
HMH		 2551static void hotkey_poll_stop_sync(void)
2552{
2553 if (tpacpi_hotkey_task) {
2554 if (frozen(tpacpi_hotkey_task) ||
2555 freezing(tpacpi_hotkey_task))
2556 thaw_process(tpacpi_hotkey_task);
2557
2558 kthread_stop(tpacpi_hotkey_task);
2559 tpacpi_hotkey_task = NULL;
2560 mutex_lock(&hotkey_thread_mutex);
2561 /* at this point, the thread did exit */
2562 mutex_unlock(&hotkey_thread_mutex);
2563 }
2564}
2565
2566/* call with hotkey_mutex held */
7f0cf712 2567static void hotkey_poll_setup(const bool may_warn)
01e88f25 2568{
0d922e3b
HMH		 2569 const u32 poll_driver_mask = hotkey_driver_mask & hotkey_source_mask;
2570 const u32 poll_user_mask = hotkey_user_mask & hotkey_source_mask;
db25f16d 2571
0d922e3b
HMH		 2572 if (hotkey_poll_freq > 0 &&
2573 (poll_driver_mask ||
2574 (poll_user_mask && tpacpi_inputdev->users > 0))) {
01e88f25
HMH		 2575 if (!tpacpi_hotkey_task) {
2576 tpacpi_hotkey_task = kthread_run(hotkey_kthread,
95e57ab2 2577 NULL, TPACPI_NVRAM_KTHREAD_NAME);
01e88f25
HMH		 2578 if (IS_ERR(tpacpi_hotkey_task)) {
2579 tpacpi_hotkey_task = NULL;
35ff8b9f
HMH		 2580 printk(TPACPI_ERR
2581 "could not create kernel thread "
01e88f25
HMH		 2582 "for hotkey polling\n");
2583 }
2584 }
2585 } else {
2586 hotkey_poll_stop_sync();
0d922e3b 2587 if (may_warn && (poll_driver_mask || poll_user_mask) &&
db25f16d 2588 hotkey_poll_freq == 0) {
35ff8b9f 2589 printk(TPACPI_NOTICE
0d922e3b
HMH		 2590 "hot keys 0x%08x and/or events 0x%08x "
2591 "require polling, which is currently "
2592 "disabled\n",
2593 poll_user_mask, poll_driver_mask);
01e88f25
HMH		 2594 }
2595 }
2596}
2597
7f0cf712 2598static void hotkey_poll_setup_safe(const bool may_warn)
01e88f25
HMH		 2599{
2600 mutex_lock(&hotkey_mutex);
2601 hotkey_poll_setup(may_warn);
2602 mutex_unlock(&hotkey_mutex);
2603}
2604
db25f16d
HMH		 2605/* call with hotkey_mutex held */
2606static void hotkey_poll_set_freq(unsigned int freq)
2607{
2608 if (!freq)
2609 hotkey_poll_stop_sync();
2610
db25f16d 2611 hotkey_poll_freq = freq;
db25f16d
HMH		 2612}
2613
1bc6b9cd
HMH		 2614#else /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
2615
7f0cf712
HMH		 2616static void hotkey_poll_setup(const bool __unused)
2617{
2618}
2619
2620static void hotkey_poll_setup_safe(const bool __unused)
1bc6b9cd
HMH		 2621{
2622}
2623
2624#endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
2625
01e88f25
HMH		 2626static int hotkey_inputdev_open(struct input_dev *dev)
2627{
2628 switch (tpacpi_lifecycle) {
2629 case TPACPI_LIFE_INIT:
01e88f25 2630 case TPACPI_LIFE_RUNNING:
db25f16d 2631 hotkey_poll_setup_safe(false);
01e88f25 2632 return 0;
b589ea4c
HMH		 2633 case TPACPI_LIFE_EXITING:
2634 return -EBUSY;
01e88f25
HMH		 2635 }
2636
2637 /* Should only happen if tpacpi_lifecycle is corrupt */
2638 BUG();
2639 return -EBUSY;
2640}
2641
2642static void hotkey_inputdev_close(struct input_dev *dev)
2643{
2644 /* disable hotkey polling when possible */
b589ea4c 2645 if (tpacpi_lifecycle != TPACPI_LIFE_EXITING &&
0d922e3b 2646 !(hotkey_source_mask & hotkey_driver_mask))
db25f16d 2647 hotkey_poll_setup_safe(false);
01e88f25 2648}
01e88f25 2649
a0416420
HMH		 2650/* sysfs hotkey enable ------------------------------------------------- */
2651static ssize_t hotkey_enable_show(struct device *dev,
2652 struct device_attribute *attr,
2653 char *buf)
2654{
ae92bd17 2655 int res, status;
a0416420 2656
2586d566
HMH		 2657 printk_deprecated_attribute("hotkey_enable",
2658 "Hotkey reporting is always enabled");
2659
b2c985e7 2660 res = hotkey_status_get(&status);
a0416420
HMH		 2661 if (res)
2662 return res;
2663
2664 return snprintf(buf, PAGE_SIZE, "%d\n", status);
2665}
2666
2667static ssize_t hotkey_enable_store(struct device *dev,
2668 struct device_attribute *attr,
2669 const char *buf, size_t count)
2670{
2671 unsigned long t;
2586d566
HMH		 2672
2673 printk_deprecated_attribute("hotkey_enable",
2674 "Hotkeys can be disabled through hotkey_mask");
a0416420
HMH		 2675
2676 if (parse_strtoul(buf, 1, &t))
2677 return -EINVAL;
2678
2586d566
HMH		 2679 if (t == 0)
2680 return -EPERM;
a0416420 2681
2586d566 2682 return count;
a0416420
HMH		 2683}
2684
2685static struct device_attribute dev_attr_hotkey_enable =
cc4c24e1 2686 __ATTR(hotkey_enable, S_IWUSR | S_IRUGO,
a0416420
HMH		 2687 hotkey_enable_show, hotkey_enable_store);
2688
2689/* sysfs hotkey mask --------------------------------------------------- */
2690static ssize_t hotkey_mask_show(struct device *dev,
2691 struct device_attribute *attr,
2692 char *buf)
2693{
0d922e3b 2694 return snprintf(buf, PAGE_SIZE, "0x%08x\n", hotkey_user_mask);
a0416420
HMH		 2695}
2696
2697static ssize_t hotkey_mask_store(struct device *dev,
2698 struct device_attribute *attr,
2699 const char *buf, size_t count)
2700{
2701 unsigned long t;
b2c985e7 2702 int res;
a0416420 2703
ae92bd17 2704 if (parse_strtoul(buf, 0xffffffffUL, &t))
a0416420
HMH		 2705 return -EINVAL;
2706
7646ea88 2707 if (mutex_lock_killable(&hotkey_mutex))
b2c985e7
HMH		 2708 return -ERESTARTSYS;
2709
0d922e3b 2710 res = hotkey_user_mask_set(t);
01e88f25
HMH		 2711
2712#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
db25f16d 2713 hotkey_poll_setup(true);
01e88f25
HMH		 2714#endif
2715
b2c985e7 2716 mutex_unlock(&hotkey_mutex);
a0416420 2717
56e2c200
HMH		 2718 tpacpi_disclose_usertask("hotkey_mask", "set to 0x%08lx\n", t);
2719
a0416420
HMH		 2720 return (res) ? res : count;
2721}
2722
2723static struct device_attribute dev_attr_hotkey_mask =
cc4c24e1 2724 __ATTR(hotkey_mask, S_IWUSR | S_IRUGO,
a0416420
HMH		 2725 hotkey_mask_show, hotkey_mask_store);
2726
2727/* sysfs hotkey bios_enabled ------------------------------------------- */
2728static ssize_t hotkey_bios_enabled_show(struct device *dev,
2729 struct device_attribute *attr,
2730 char *buf)
2731{
2586d566 2732 return sprintf(buf, "0\n");
a0416420
HMH		 2733}
2734
2735static struct device_attribute dev_attr_hotkey_bios_enabled =
cc4c24e1 2736 __ATTR(hotkey_bios_enabled, S_IRUGO, hotkey_bios_enabled_show, NULL);
a0416420
HMH		 2737
2738/* sysfs hotkey bios_mask ---------------------------------------------- */
2739static ssize_t hotkey_bios_mask_show(struct device *dev,
2740 struct device_attribute *attr,
2741 char *buf)
2742{
06777be6
HMH		 2743 printk_deprecated_attribute("hotkey_bios_mask",
2744 "This attribute is useless.");
ae92bd17 2745 return snprintf(buf, PAGE_SIZE, "0x%08x\n", hotkey_orig_mask);
a0416420
HMH		 2746}
2747
2748static struct device_attribute dev_attr_hotkey_bios_mask =
cc4c24e1 2749 __ATTR(hotkey_bios_mask, S_IRUGO, hotkey_bios_mask_show, NULL);
a0416420 2750
9b010de5
HMH		 2751/* sysfs hotkey all_mask ----------------------------------------------- */
2752static ssize_t hotkey_all_mask_show(struct device *dev,
2753 struct device_attribute *attr,
2754 char *buf)
2755{
01e88f25
HMH		 2756 return snprintf(buf, PAGE_SIZE, "0x%08x\n",
2757 hotkey_all_mask | hotkey_source_mask);
9b010de5
HMH		 2758}
2759
2760static struct device_attribute dev_attr_hotkey_all_mask =
2761 __ATTR(hotkey_all_mask, S_IRUGO, hotkey_all_mask_show, NULL);
2762
2763/* sysfs hotkey recommended_mask --------------------------------------- */
2764static ssize_t hotkey_recommended_mask_show(struct device *dev,
2765 struct device_attribute *attr,
2766 char *buf)
2767{
2768 return snprintf(buf, PAGE_SIZE, "0x%08x\n",
01e88f25
HMH		 2769 (hotkey_all_mask | hotkey_source_mask)
2770 & ~hotkey_reserved_mask);
9b010de5
HMH		 2771}
2772
2773static struct device_attribute dev_attr_hotkey_recommended_mask =
2774 __ATTR(hotkey_recommended_mask, S_IRUGO,
2775 hotkey_recommended_mask_show, NULL);
2776
01e88f25
HMH		 2777#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
2778
2779/* sysfs hotkey hotkey_source_mask ------------------------------------- */
2780static ssize_t hotkey_source_mask_show(struct device *dev,
2781 struct device_attribute *attr,
2782 char *buf)
2783{
2784 return snprintf(buf, PAGE_SIZE, "0x%08x\n", hotkey_source_mask);
2785}
2786
2787static ssize_t hotkey_source_mask_store(struct device *dev,
2788 struct device_attribute *attr,
2789 const char *buf, size_t count)
2790{
2791 unsigned long t;
0d922e3b
HMH		 2792 u32 r_ev;
2793 int rc;
01e88f25
HMH		 2794
2795 if (parse_strtoul(buf, 0xffffffffUL, &t) ||
2796 ((t & ~TPACPI_HKEY_NVRAM_KNOWN_MASK) != 0))
2797 return -EINVAL;
2798
7646ea88 2799 if (mutex_lock_killable(&hotkey_mutex))
01e88f25
HMH		 2800 return -ERESTARTSYS;
2801
2802 HOTKEY_CONFIG_CRITICAL_START
2803 hotkey_source_mask = t;
2804 HOTKEY_CONFIG_CRITICAL_END
2805
0d922e3b
HMH		 2806 rc = hotkey_mask_set((hotkey_user_mask | hotkey_driver_mask) &
2807 ~hotkey_source_mask);
db25f16d 2808 hotkey_poll_setup(true);
0d922e3b
HMH		 2809
2810 /* check if events needed by the driver got disabled */
2811 r_ev = hotkey_driver_mask & ~(hotkey_acpi_mask & hotkey_all_mask)
2812 & ~hotkey_source_mask & TPACPI_HKEY_NVRAM_KNOWN_MASK;
01e88f25
HMH		 2813
2814 mutex_unlock(&hotkey_mutex);
2815
0d922e3b
HMH		 2816 if (rc < 0)
2817 printk(TPACPI_ERR "hotkey_source_mask: failed to update the"
2818 "firmware event mask!\n");
2819
2820 if (r_ev)
2821 printk(TPACPI_NOTICE "hotkey_source_mask: "
2822 "some important events were disabled: "
2823 "0x%04x\n", r_ev);
2824
56e2c200
HMH		 2825 tpacpi_disclose_usertask("hotkey_source_mask", "set to 0x%08lx\n", t);
2826
0d922e3b 2827 return (rc < 0) ? rc : count;
01e88f25
HMH		 2828}
2829
2830static struct device_attribute dev_attr_hotkey_source_mask =
2831 __ATTR(hotkey_source_mask, S_IWUSR | S_IRUGO,
2832 hotkey_source_mask_show, hotkey_source_mask_store);
2833
2834/* sysfs hotkey hotkey_poll_freq --------------------------------------- */
2835static ssize_t hotkey_poll_freq_show(struct device *dev,
2836 struct device_attribute *attr,
2837 char *buf)
2838{
2839 return snprintf(buf, PAGE_SIZE, "%d\n", hotkey_poll_freq);
2840}
2841
2842static ssize_t hotkey_poll_freq_store(struct device *dev,
2843 struct device_attribute *attr,
2844 const char *buf, size_t count)
2845{
2846 unsigned long t;
2847
2848 if (parse_strtoul(buf, 25, &t))
2849 return -EINVAL;
2850
7646ea88 2851 if (mutex_lock_killable(&hotkey_mutex))
01e88f25
HMH		 2852 return -ERESTARTSYS;
2853
db25f16d
HMH		 2854 hotkey_poll_set_freq(t);
2855 hotkey_poll_setup(true);
01e88f25 2856
01e88f25
HMH		 2857 mutex_unlock(&hotkey_mutex);
2858
56e2c200
HMH		 2859 tpacpi_disclose_usertask("hotkey_poll_freq", "set to %lu\n", t);
2860
01e88f25
HMH		 2861 return count;
2862}
2863
2864static struct device_attribute dev_attr_hotkey_poll_freq =
2865 __ATTR(hotkey_poll_freq, S_IWUSR | S_IRUGO,
2866 hotkey_poll_freq_show, hotkey_poll_freq_store);
2867
2868#endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
2869
50ebec09 2870/* sysfs hotkey radio_sw (pollable) ------------------------------------ */
74941a69
HMH		 2871static ssize_t hotkey_radio_sw_show(struct device *dev,
2872 struct device_attribute *attr,
2873 char *buf)
2874{
19d337df
JB		 2875 int res;
2876 res = hotkey_get_wlsw();
74941a69
HMH		 2877 if (res < 0)
2878 return res;
2879
19d337df
JB		 2880 /* Opportunistic update */
2881 tpacpi_rfk_update_hwblock_state((res == TPACPI_RFK_RADIO_OFF));
2882
2883 return snprintf(buf, PAGE_SIZE, "%d\n",
2884 (res == TPACPI_RFK_RADIO_OFF) ? 0 : 1);
74941a69
HMH		 2885}
2886
2887static struct device_attribute dev_attr_hotkey_radio_sw =
2888 __ATTR(hotkey_radio_sw, S_IRUGO, hotkey_radio_sw_show, NULL);
2889
50ebec09
HMH		 2890static void hotkey_radio_sw_notify_change(void)
2891{
2892 if (tp_features.hotkey_wlsw)
2893 sysfs_notify(&tpacpi_pdev->dev.kobj, NULL,
2894 "hotkey_radio_sw");
2895}
2896
6c231bd5
HMH		 2897/* sysfs hotkey tablet mode (pollable) --------------------------------- */
2898static ssize_t hotkey_tablet_mode_show(struct device *dev,
2899 struct device_attribute *attr,
2900 char *buf)
2901{
2902 int res, s;
2903 res = hotkey_get_tablet_mode(&s);
2904 if (res < 0)
2905 return res;
2906
2907 return snprintf(buf, PAGE_SIZE, "%d\n", !!s);
2908}
2909
2910static struct device_attribute dev_attr_hotkey_tablet_mode =
2911 __ATTR(hotkey_tablet_mode, S_IRUGO, hotkey_tablet_mode_show, NULL);
2912
2913static void hotkey_tablet_mode_notify_change(void)
2914{
2915 if (tp_features.hotkey_tablet)
2916 sysfs_notify(&tpacpi_pdev->dev.kobj, NULL,
2917 "hotkey_tablet_mode");
2918}
2919
ff80f137
HMH		 2920/* sysfs hotkey report_mode -------------------------------------------- */
2921static ssize_t hotkey_report_mode_show(struct device *dev,
2922 struct device_attribute *attr,
2923 char *buf)
2924{
2925 return snprintf(buf, PAGE_SIZE, "%d\n",
2926 (hotkey_report_mode != 0) ? hotkey_report_mode : 1);
2927}
2928
2929static struct device_attribute dev_attr_hotkey_report_mode =
2930 __ATTR(hotkey_report_mode, S_IRUGO, hotkey_report_mode_show, NULL);
2931
50ebec09 2932/* sysfs wakeup reason (pollable) -------------------------------------- */
a713b4d7
HMH		 2933static ssize_t hotkey_wakeup_reason_show(struct device *dev,
2934 struct device_attribute *attr,
2935 char *buf)
2936{
2937 return snprintf(buf, PAGE_SIZE, "%d\n", hotkey_wakeup_reason);
2938}
2939
2940static struct device_attribute dev_attr_hotkey_wakeup_reason =
2941 __ATTR(wakeup_reason, S_IRUGO, hotkey_wakeup_reason_show, NULL);
2942
1d5a2b54 2943static void hotkey_wakeup_reason_notify_change(void)
50ebec09 2944{
0d922e3b
HMH		 2945 sysfs_notify(&tpacpi_pdev->dev.kobj, NULL,
2946 "wakeup_reason");
50ebec09
HMH		 2947}
2948
2949/* sysfs wakeup hotunplug_complete (pollable) -------------------------- */
a713b4d7
HMH		 2950static ssize_t hotkey_wakeup_hotunplug_complete_show(struct device *dev,
2951 struct device_attribute *attr,
2952 char *buf)
2953{
2954 return snprintf(buf, PAGE_SIZE, "%d\n", hotkey_autosleep_ack);
2955}
2956
2957static struct device_attribute dev_attr_hotkey_wakeup_hotunplug_complete =
2958 __ATTR(wakeup_hotunplug_complete, S_IRUGO,
2959 hotkey_wakeup_hotunplug_complete_show, NULL);
2960
1d5a2b54 2961static void hotkey_wakeup_hotunplug_complete_notify_change(void)
50ebec09 2962{
0d922e3b
HMH		 2963 sysfs_notify(&tpacpi_pdev->dev.kobj, NULL,
2964 "wakeup_hotunplug_complete");
50ebec09
HMH		 2965}
2966
a0416420
HMH		 2967/* --------------------------------------------------------------------- */
2968
ff80f137
HMH		 2969static struct attribute *hotkey_attributes[] __initdata = {
2970 &dev_attr_hotkey_enable.attr,
01e88f25 2971 &dev_attr_hotkey_bios_enabled.attr,
0d922e3b 2972 &dev_attr_hotkey_bios_mask.attr,
ff80f137 2973 &dev_attr_hotkey_report_mode.attr,
0d922e3b
HMH		 2974 &dev_attr_hotkey_wakeup_reason.attr,
2975 &dev_attr_hotkey_wakeup_hotunplug_complete.attr,
01e88f25
HMH		 2976 &dev_attr_hotkey_mask.attr,
2977 &dev_attr_hotkey_all_mask.attr,
2978 &dev_attr_hotkey_recommended_mask.attr,
0d922e3b 2979#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
01e88f25
HMH		 2980 &dev_attr_hotkey_source_mask.attr,
2981 &dev_attr_hotkey_poll_freq.attr,
2982#endif
ff80f137
HMH		 2983};
2984
19d337df
JB		 2985/*
2986 * Sync both the hw and sw blocking state of all switches
2987 */
733e27c1
HMH		 2988static void tpacpi_send_radiosw_update(void)
2989{
2990 int wlsw;
2991
19d337df
JB		 2992 /*
2993 * We must sync all rfkill controllers *before* issuing any
2994 * rfkill input events, or we will race the rfkill core input
2995 * handler.
2996 *
2997 * tpacpi_inputdev_send_mutex works as a syncronization point
2998 * for the above.
2999 *
3000 * We optimize to avoid numerous calls to hotkey_get_wlsw.
3001 */
3002
3003 wlsw = hotkey_get_wlsw();
3004
3005 /* Sync hw blocking state first if it is hw-blocked */
3006 if (wlsw == TPACPI_RFK_RADIO_OFF)
3007 tpacpi_rfk_update_hwblock_state(true);
0e74dc26 3008
19d337df
JB		 3009 /* Sync sw blocking state */
3010 tpacpi_rfk_update_swstate_all();
3011
3012 /* Sync hw blocking state last if it is hw-unblocked */
3013 if (wlsw == TPACPI_RFK_RADIO_ON)
3014 tpacpi_rfk_update_hwblock_state(false);
3015
3016 /* Issue rfkill input event for WLSW switch */
3017 if (!(wlsw < 0)) {
733e27c1
HMH		 3018 mutex_lock(&tpacpi_inputdev_send_mutex);
3019
3020 input_report_switch(tpacpi_inputdev,
19d337df 3021 SW_RFKILL_ALL, (wlsw > 0));
733e27c1
HMH		 3022 input_sync(tpacpi_inputdev);
3023
3024 mutex_unlock(&tpacpi_inputdev_send_mutex);
3025 }
19d337df
JB		 3026
3027 /*
3028 * this can be unconditional, as we will poll state again
3029 * if userspace uses the notify to read data
3030 */
733e27c1
HMH		 3031 hotkey_radio_sw_notify_change();
3032}
3033
9c0a76e1
HMH		 3034static void hotkey_exit(void)
3035{
3036#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
db25f16d 3037 mutex_lock(&hotkey_mutex);
9c0a76e1 3038 hotkey_poll_stop_sync();
db25f16d 3039 mutex_unlock(&hotkey_mutex);
9c0a76e1
HMH		 3040#endif
3041
3042 if (hotkey_dev_attributes)
3043 delete_attr_set(hotkey_dev_attributes, &tpacpi_pdev->dev.kobj);
3044
3045 kfree(hotkey_keycode_map);
3046
4be73005 3047 dbg_printk(TPACPI_DBG_EXIT | TPACPI_DBG_HKEY,
0d922e3b
HMH		 3048 "restoring original HKEY status and mask\n");
3049 /* yes, there is a bitwise or below, we want the
3050 * functions to be called even if one of them fail */
3051 if (((tp_features.hotkey_mask &&
3052 hotkey_mask_set(hotkey_orig_mask)) |
3053 hotkey_status_set(false)) != 0)
4be73005
HMH		 3054 printk(TPACPI_ERR
3055 "failed to restore hot key mask "
3056 "to BIOS defaults\n");
9c0a76e1
HMH		 3057}
3058
de4c8cc7
HMH		 3059static void __init hotkey_unmap(const unsigned int scancode)
3060{
3061 if (hotkey_keycode_map[scancode] != KEY_RESERVED) {
3062 clear_bit(hotkey_keycode_map[scancode],
3063 tpacpi_inputdev->keybit);
3064 hotkey_keycode_map[scancode] = KEY_RESERVED;
3065 }
3066}
3067
0d922e3b
HMH		 3068/*
3069 * HKEY quirks:
3070 * TPACPI_HK_Q_INIMASK: Supports FN+F3,FN+F4,FN+F12
3071 */
3072
3073#define TPACPI_HK_Q_INIMASK 0x0001
3074
3075static const struct tpacpi_quirk tpacpi_hotkey_qtable[] __initconst = {
3076 TPACPI_Q_IBM('I', 'H', TPACPI_HK_Q_INIMASK), /* 600E */
3077 TPACPI_Q_IBM('I', 'N', TPACPI_HK_Q_INIMASK), /* 600E */
3078 TPACPI_Q_IBM('I', 'D', TPACPI_HK_Q_INIMASK), /* 770, 770E, 770ED */
3079 TPACPI_Q_IBM('I', 'W', TPACPI_HK_Q_INIMASK), /* A20m */
3080 TPACPI_Q_IBM('I', 'V', TPACPI_HK_Q_INIMASK), /* A20p */
3081 TPACPI_Q_IBM('1', '0', TPACPI_HK_Q_INIMASK), /* A21e, A22e */
3082 TPACPI_Q_IBM('K', 'U', TPACPI_HK_Q_INIMASK), /* A21e */
3083 TPACPI_Q_IBM('K', 'X', TPACPI_HK_Q_INIMASK), /* A21m, A22m */
3084 TPACPI_Q_IBM('K', 'Y', TPACPI_HK_Q_INIMASK), /* A21p, A22p */
3085 TPACPI_Q_IBM('1', 'B', TPACPI_HK_Q_INIMASK), /* A22e */
3086 TPACPI_Q_IBM('1', '3', TPACPI_HK_Q_INIMASK), /* A22m */
3087 TPACPI_Q_IBM('1', 'E', TPACPI_HK_Q_INIMASK), /* A30/p (0) */
3088 TPACPI_Q_IBM('1', 'C', TPACPI_HK_Q_INIMASK), /* R30 */
3089 TPACPI_Q_IBM('1', 'F', TPACPI_HK_Q_INIMASK), /* R31 */
3090 TPACPI_Q_IBM('I', 'Y', TPACPI_HK_Q_INIMASK), /* T20 */
3091 TPACPI_Q_IBM('K', 'Z', TPACPI_HK_Q_INIMASK), /* T21 */
3092 TPACPI_Q_IBM('1', '6', TPACPI_HK_Q_INIMASK), /* T22 */
3093 TPACPI_Q_IBM('I', 'Z', TPACPI_HK_Q_INIMASK), /* X20, X21 */
3094 TPACPI_Q_IBM('1', 'D', TPACPI_HK_Q_INIMASK), /* X22, X23, X24 */
3095};
3096
fc6e7568
HMH		 3097typedef u16 tpacpi_keymap_entry_t;
3098typedef tpacpi_keymap_entry_t tpacpi_keymap_t[TPACPI_HOTKEY_MAP_LEN];
d1e14dca 3099
a5763f22 3100static int __init hotkey_init(struct ibm_init_struct *iibm)
56b6aeb0 3101{
0f089147
HMH		 3102 /* Requirements for changing the default keymaps:
3103 *
3104 * 1. Many of the keys are mapped to KEY_RESERVED for very
3105 * good reasons. Do not change them unless you have deep
3106 * knowledge on the IBM and Lenovo ThinkPad firmware for
3107 * the various ThinkPad models. The driver behaves
3108 * differently for KEY_RESERVED: such keys have their
3109 * hot key mask *unset* in mask_recommended, and also
3110 * in the initial hot key mask programmed into the
3111 * firmware at driver load time, which means the firm-
3112 * ware may react very differently if you change them to
3113 * something else;
3114 *
3115 * 2. You must be subscribed to the linux-thinkpad and
3116 * ibm-acpi-devel mailing lists, and you should read the
3117 * list archives since 2007 if you want to change the
3118 * keymaps. This requirement exists so that you will
3119 * know the past history of problems with the thinkpad-
3120 * acpi driver keymaps, and also that you will be
3121 * listening to any bug reports;
3122 *
3123 * 3. Do not send thinkpad-acpi specific patches directly to
3124 * for merging, *ever*. Send them to the linux-acpi
3125 * mailinglist for comments. Merging is to be done only
3126 * through acpi-test and the ACPI maintainer.
3127 *
3128 * If the above is too much to ask, don't change the keymap.
3129 * Ask the thinkpad-acpi maintainer to do it, instead.
3130 */
d1e14dca
HMH		 3131
3132 enum keymap_index {
3133 TPACPI_KEYMAP_IBM_GENERIC = 0,
3134 TPACPI_KEYMAP_LENOVO_GENERIC,
3135 };
3136
3137 static const tpacpi_keymap_t tpacpi_keymaps[] __initconst = {
3138 /* Generic keymap for IBM ThinkPads */
3139 [TPACPI_KEYMAP_IBM_GENERIC] = {
edf0e0e5 3140 /* Scan Codes 0x00 to 0x0B: ACPI HKEY FN+F1..F12 */
d1e14dca 3141 KEY_FN_F1, KEY_BATTERY, KEY_COFFEE, KEY_SLEEP,
edf0e0e5
HMH		 3142 KEY_WLAN, KEY_FN_F6, KEY_SWITCHVIDEOMODE, KEY_FN_F8,
3143 KEY_FN_F9, KEY_FN_F10, KEY_FN_F11, KEY_SUSPEND,
0f089147
HMH		 3144
3145 /* Scan codes 0x0C to 0x1F: Other ACPI HKEY hot keys */
edf0e0e5
HMH		 3146 KEY_UNKNOWN, /* 0x0C: FN+BACKSPACE */
3147 KEY_UNKNOWN, /* 0x0D: FN+INSERT */
3148 KEY_UNKNOWN, /* 0x0E: FN+DELETE */
0f089147 3149
0d922e3b 3150 /* brightness: firmware always reacts to them */
e927c08d 3151 KEY_RESERVED, /* 0x0F: FN+HOME (brightness up) */
e927c08d 3152 KEY_RESERVED, /* 0x10: FN+END (brightness down) */
0f089147
HMH		 3153
3154 /* Thinklight: firmware always react to it */
edf0e0e5 3155 KEY_RESERVED, /* 0x11: FN+PGUP (thinklight toggle) */
0f089147 3156
edf0e0e5
HMH		 3157 KEY_UNKNOWN, /* 0x12: FN+PGDOWN */
3158 KEY_ZOOM, /* 0x13: FN+SPACE (zoom) */
0f089147
HMH		 3159
3160 /* Volume: firmware always react to it and reprograms
3161 * the built-in *extra* mixer. Never map it to control
3162 * another mixer by default. */
e927c08d
HMH		 3163 KEY_RESERVED, /* 0x14: VOLUME UP */
3164 KEY_RESERVED, /* 0x15: VOLUME DOWN */
3165 KEY_RESERVED, /* 0x16: MUTE */
0f089147 3166
edf0e0e5 3167 KEY_VENDOR, /* 0x17: Thinkpad/AccessIBM/Lenovo */
0f089147 3168
edf0e0e5
HMH		 3169 /* (assignments unknown, please report if found) */
3170 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN,
3171 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN,
d1e14dca
HMH		 3172 },
3173
3174 /* Generic keymap for Lenovo ThinkPads */
3175 [TPACPI_KEYMAP_LENOVO_GENERIC] = {
edf0e0e5
HMH		 3176 /* Scan Codes 0x00 to 0x0B: ACPI HKEY FN+F1..F12 */
3177 KEY_FN_F1, KEY_COFFEE, KEY_BATTERY, KEY_SLEEP,
2b754262 3178 KEY_WLAN, KEY_CAMERA, KEY_SWITCHVIDEOMODE, KEY_FN_F8,
edf0e0e5 3179 KEY_FN_F9, KEY_FN_F10, KEY_FN_F11, KEY_SUSPEND,
0f089147
HMH		 3180
3181 /* Scan codes 0x0C to 0x1F: Other ACPI HKEY hot keys */
edf0e0e5
HMH		 3182 KEY_UNKNOWN, /* 0x0C: FN+BACKSPACE */
3183 KEY_UNKNOWN, /* 0x0D: FN+INSERT */
3184 KEY_UNKNOWN, /* 0x0E: FN+DELETE */
0f089147 3185
de4c8cc7
HMH		 3186 /* These should be enabled --only-- when ACPI video
3187 * is disabled (i.e. in "vendor" mode), and are handled
3188 * in a special way by the init code */
3189 KEY_BRIGHTNESSUP, /* 0x0F: FN+HOME (brightness up) */
3190 KEY_BRIGHTNESSDOWN, /* 0x10: FN+END (brightness down) */
0f089147 3191
edf0e0e5 3192 KEY_RESERVED, /* 0x11: FN+PGUP (thinklight toggle) */
0f089147 3193
edf0e0e5
HMH		 3194 KEY_UNKNOWN, /* 0x12: FN+PGDOWN */
3195 KEY_ZOOM, /* 0x13: FN+SPACE (zoom) */
0f089147
HMH		 3196
3197 /* Volume: z60/z61, T60 (BIOS version?): firmware always
3198 * react to it and reprograms the built-in *extra* mixer.
3199 * Never map it to control another mixer by default.
3200 *
3201 * T60?, T61, R60?, R61: firmware and EC tries to send
3202 * these over the regular keyboard, so these are no-ops,
3203 * but there are still weird bugs re. MUTE, so do not
3204 * change unless you get test reports from all Lenovo
3205 * models. May cause the BIOS to interfere with the
3206 * HDA mixer.
3207 */
e927c08d
HMH		 3208 KEY_RESERVED, /* 0x14: VOLUME UP */
3209 KEY_RESERVED, /* 0x15: VOLUME DOWN */
3210 KEY_RESERVED, /* 0x16: MUTE */
0f089147 3211
edf0e0e5 3212 KEY_VENDOR, /* 0x17: Thinkpad/AccessIBM/Lenovo */
0f089147 3213
edf0e0e5
HMH		 3214 /* (assignments unknown, please report if found) */
3215 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN,
3216 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN,
d1e14dca 3217 },
edf0e0e5
HMH		 3218 };
3219
d1e14dca
HMH		 3220 static const struct tpacpi_quirk tpacpi_keymap_qtable[] __initconst = {
3221 /* Generic maps (fallback) */
3222 {
3223 .vendor = PCI_VENDOR_ID_IBM,
3224 .bios = TPACPI_MATCH_ANY, .ec = TPACPI_MATCH_ANY,
3225 .quirks = TPACPI_KEYMAP_IBM_GENERIC,
3226 },
3227 {
3228 .vendor = PCI_VENDOR_ID_LENOVO,
3229 .bios = TPACPI_MATCH_ANY, .ec = TPACPI_MATCH_ANY,
3230 .quirks = TPACPI_KEYMAP_LENOVO_GENERIC,
3231 },
3232 };
3233
3234#define TPACPI_HOTKEY_MAP_SIZE sizeof(tpacpi_keymap_t)
fc6e7568 3235#define TPACPI_HOTKEY_MAP_TYPESIZE sizeof(tpacpi_keymap_entry_t)
edf0e0e5 3236
6a38abbf 3237 int res, i;
74941a69 3238 int status;
1b6521dc 3239 int hkeyv;
d89a727a
HMH		 3240 bool radiosw_state = false;
3241 bool tabletsw_state = false;
b86c4722 3242
0d922e3b 3243 unsigned long quirks;
d1e14dca 3244 unsigned long keymap_id;
0d922e3b 3245
56e2c200
HMH		 3246 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY,
3247 "initializing hotkey subdriver\n");
fe08bc4b 3248
6a38abbf 3249 BUG_ON(!tpacpi_inputdev);
01e88f25
HMH		 3250 BUG_ON(tpacpi_inputdev->open != NULL ||
3251 tpacpi_inputdev->close != NULL);
6a38abbf 3252
e0c7dfe7 3253 TPACPI_ACPIHANDLE_INIT(hkey);
40ca9fdf 3254 mutex_init(&hotkey_mutex);
5fba344c 3255
01e88f25
HMH		 3256#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
3257 mutex_init(&hotkey_thread_mutex);
3258 mutex_init(&hotkey_thread_data_mutex);
3259#endif
3260
56b6aeb0 3261 /* hotkey not supported on 570 */
d8fd94d9 3262 tp_features.hotkey = hkey_handle != NULL;
56b6aeb0 3263
56e2c200
HMH		 3264 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY,
3265 "hotkeys are %s\n",
d8fd94d9 3266 str_supported(tp_features.hotkey));
fe08bc4b 3267
9c0a76e1
HMH		 3268 if (!tp_features.hotkey)
3269 return 1;
a0416420 3270
0d922e3b
HMH		 3271 quirks = tpacpi_check_quirks(tpacpi_hotkey_qtable,
3272 ARRAY_SIZE(tpacpi_hotkey_qtable));
3273
d64c81c4
HMH		 3274 tpacpi_disable_brightness_delay();
3275
0d922e3b
HMH		 3276 /* MUST have enough space for all attributes to be added to
3277 * hotkey_dev_attributes */
3278 hotkey_dev_attributes = create_attr_set(
3279 ARRAY_SIZE(hotkey_attributes) + 2,
3280 NULL);
9c0a76e1
HMH		 3281 if (!hotkey_dev_attributes)
3282 return -ENOMEM;
3283 res = add_many_to_attr_set(hotkey_dev_attributes,
3284 hotkey_attributes,
3285 ARRAY_SIZE(hotkey_attributes));
3286 if (res)
3287 goto err_exit;
3288
0d922e3b 3289 /* mask not supported on 600e/x, 770e, 770x, A21e, A2xm/p,
9c0a76e1
HMH		 3290 A30, R30, R31, T20-22, X20-21, X22-24. Detected by checking
3291 for HKEY interface version 0x100 */
3292 if (acpi_evalf(hkey_handle, &hkeyv, "MHKV", "qd")) {
3293 if ((hkeyv >> 8) != 1) {
3294 printk(TPACPI_ERR "unknown version of the "
3295 "HKEY interface: 0x%x\n", hkeyv);
3296 printk(TPACPI_ERR "please report this to %s\n",
3297 TPACPI_MAIL);
3298 } else {
3299 /*
3300 * MHKV 0x100 in A31, R40, R40e,
3301 * T4x, X31, and later
3302 */
56e2c200
HMH		 3303 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY,
3304 "firmware HKEY interface version: 0x%x\n",
3305 hkeyv);
0d922e3b
HMH		 3306
3307 /* Paranoia check AND init hotkey_all_mask */
3308 if (!acpi_evalf(hkey_handle, &hotkey_all_mask,
3309 "MHKA", "qd")) {
3310 printk(TPACPI_ERR
3311 "missing MHKA handler, "
3312 "please report this to %s\n",
3313 TPACPI_MAIL);
3314 /* Fallback: pre-init for FN+F3,F4,F12 */
3315 hotkey_all_mask = 0x080cU;
3316 } else {
3317 tp_features.hotkey_mask = 1;
3318 }
1b6521dc 3319 }
9c0a76e1 3320 }
56b6aeb0 3321
56e2c200
HMH		 3322 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY,
3323 "hotkey masks are %s\n",
9c0a76e1 3324 str_supported(tp_features.hotkey_mask));
fe08bc4b 3325
0d922e3b
HMH		 3326 /* Init hotkey_all_mask if not initialized yet */
3327 if (!tp_features.hotkey_mask && !hotkey_all_mask &&
3328 (quirks & TPACPI_HK_Q_INIMASK))
3329 hotkey_all_mask = 0x080cU; /* FN+F12, FN+F4, FN+F3 */
9b010de5 3330
0d922e3b 3331 /* Init hotkey_acpi_mask and hotkey_orig_mask */
9c0a76e1 3332 if (tp_features.hotkey_mask) {
0d922e3b
HMH		 3333 /* hotkey_source_mask *must* be zero for
3334 * the first hotkey_mask_get to return hotkey_orig_mask */
9c0a76e1
HMH		 3335 res = hotkey_mask_get();
3336 if (res)
3337 goto err_exit;
3338
0d922e3b
HMH		 3339 hotkey_orig_mask = hotkey_acpi_mask;
3340 } else {
3341 hotkey_orig_mask = hotkey_all_mask;
3342 hotkey_acpi_mask = hotkey_all_mask;
9c0a76e1 3343 }
74941a69 3344
a73f3091
HMH		 3345#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
3346 if (dbg_wlswemul) {
3347 tp_features.hotkey_wlsw = 1;
d89a727a 3348 radiosw_state = !!tpacpi_wlsw_emulstate;
a73f3091
HMH		 3349 printk(TPACPI_INFO
3350 "radio switch emulation enabled\n");
3351 } else
3352#endif
9c0a76e1
HMH		 3353 /* Not all thinkpads have a hardware radio switch */
3354 if (acpi_evalf(hkey_handle, &status, "WLSW", "qd")) {
3355 tp_features.hotkey_wlsw = 1;
d89a727a 3356 radiosw_state = !!status;
9c0a76e1
HMH		 3357 printk(TPACPI_INFO
3358 "radio switch found; radios are %s\n",
3359 enabled(status, 0));
3a872080
HMH		 3360 }
3361 if (tp_features.hotkey_wlsw)
9c0a76e1
HMH		 3362 res = add_to_attr_set(hotkey_dev_attributes,
3363 &dev_attr_hotkey_radio_sw.attr);
74941a69 3364
9c0a76e1
HMH		 3365 /* For X41t, X60t, X61t Tablets... */
3366 if (!res && acpi_evalf(hkey_handle, &status, "MHKG", "qd")) {
3367 tp_features.hotkey_tablet = 1;
d89a727a 3368 tabletsw_state = !!(status & TP_HOTKEY_TABLET_MASK);
9c0a76e1
HMH		 3369 printk(TPACPI_INFO
3370 "possible tablet mode switch found; "
3371 "ThinkPad in %s mode\n",
d89a727a 3372 (tabletsw_state) ? "tablet" : "laptop");
9c0a76e1
HMH		 3373 res = add_to_attr_set(hotkey_dev_attributes,
3374 &dev_attr_hotkey_tablet_mode.attr);
3375 }
6c231bd5 3376
9c0a76e1
HMH		 3377 if (!res)
3378 res = register_attr_set_with_sysfs(
3379 hotkey_dev_attributes,
3380 &tpacpi_pdev->dev.kobj);
3381 if (res)
3382 goto err_exit;
6a38abbf 3383
9c0a76e1 3384 /* Set up key map */
9c0a76e1
HMH		 3385 hotkey_keycode_map = kmalloc(TPACPI_HOTKEY_MAP_SIZE,
3386 GFP_KERNEL);
3387 if (!hotkey_keycode_map) {
3388 printk(TPACPI_ERR
3389 "failed to allocate memory for key map\n");
3390 res = -ENOMEM;
3391 goto err_exit;
3392 }
edf0e0e5 3393
d1e14dca
HMH		 3394 keymap_id = tpacpi_check_quirks(tpacpi_keymap_qtable,
3395 ARRAY_SIZE(tpacpi_keymap_qtable));
3396 BUG_ON(keymap_id >= ARRAY_SIZE(tpacpi_keymaps));
3397 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY,
3398 "using keymap number %lu\n", keymap_id);
3399
3400 memcpy(hotkey_keycode_map, &tpacpi_keymaps[keymap_id],
3401 TPACPI_HOTKEY_MAP_SIZE);
edf0e0e5 3402
792979c8 3403 input_set_capability(tpacpi_inputdev, EV_MSC, MSC_SCAN);
9c0a76e1
HMH		 3404 tpacpi_inputdev->keycodesize = TPACPI_HOTKEY_MAP_TYPESIZE;
3405 tpacpi_inputdev->keycodemax = TPACPI_HOTKEY_MAP_LEN;
3406 tpacpi_inputdev->keycode = hotkey_keycode_map;
3407 for (i = 0; i < TPACPI_HOTKEY_MAP_LEN; i++) {
3408 if (hotkey_keycode_map[i] != KEY_RESERVED) {
792979c8
HMH		 3409 input_set_capability(tpacpi_inputdev, EV_KEY,
3410 hotkey_keycode_map[i]);
9c0a76e1
HMH		 3411 } else {
3412 if (i < sizeof(hotkey_reserved_mask)*8)
3413 hotkey_reserved_mask |= 1 << i;
6a38abbf 3414 }
9c0a76e1 3415 }
6a38abbf 3416
9c0a76e1 3417 if (tp_features.hotkey_wlsw) {
792979c8 3418 input_set_capability(tpacpi_inputdev, EV_SW, SW_RFKILL_ALL);
d89a727a
HMH		 3419 input_report_switch(tpacpi_inputdev,
3420 SW_RFKILL_ALL, radiosw_state);
9c0a76e1
HMH		 3421 }
3422 if (tp_features.hotkey_tablet) {
792979c8 3423 input_set_capability(tpacpi_inputdev, EV_SW, SW_TABLET_MODE);
d89a727a
HMH		 3424 input_report_switch(tpacpi_inputdev,
3425 SW_TABLET_MODE, tabletsw_state);
9c0a76e1 3426 }
5c29d58f 3427
9c0a76e1 3428 /* Do not issue duplicate brightness change events to
77775838
HMH		 3429 * userspace. tpacpi_detect_brightness_capabilities() must have
3430 * been called before this point */
8bf3d4c5 3431 if (tp_features.bright_acpimode && acpi_video_backlight_support()) {
9c0a76e1
HMH		 3432 printk(TPACPI_INFO
3433 "This ThinkPad has standard ACPI backlight "
3434 "brightness control, supported by the ACPI "
3435 "video driver\n");
3436 printk(TPACPI_NOTICE
3437 "Disabling thinkpad-acpi brightness events "
3438 "by default...\n");
3439
de4c8cc7
HMH		 3440 /* Disable brightness up/down on Lenovo thinkpads when
3441 * ACPI is handling them, otherwise it is plain impossible
3442 * for userspace to do something even remotely sane */
9c0a76e1
HMH		 3443 hotkey_reserved_mask |=
3444 (1 << TP_ACPI_HOTKEYSCAN_FNHOME)
3445 | (1 << TP_ACPI_HOTKEYSCAN_FNEND);
de4c8cc7
HMH		 3446 hotkey_unmap(TP_ACPI_HOTKEYSCAN_FNHOME);
3447 hotkey_unmap(TP_ACPI_HOTKEYSCAN_FNEND);
9c0a76e1 3448 }
ff80f137 3449
230d8cf2 3450#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
0d922e3b
HMH		 3451 hotkey_source_mask = TPACPI_HKEY_NVRAM_GOOD_MASK
3452 & ~hotkey_all_mask
3453 & ~hotkey_reserved_mask;
230d8cf2
HMH		 3454
3455 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY,
3456 "hotkey source mask 0x%08x, polling freq %u\n",
3457 hotkey_source_mask, hotkey_poll_freq);
3458#endif
3459
56e2c200
HMH		 3460 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY,
3461 "enabling firmware HKEY event interface...\n");
2586d566 3462 res = hotkey_status_set(true);
9c0a76e1
HMH		 3463 if (res) {
3464 hotkey_exit();
3465 return res;
3466 }
0d922e3b
HMH		 3467 res = hotkey_mask_set(((hotkey_all_mask & ~hotkey_reserved_mask)
3468 | hotkey_driver_mask)
3469 & ~hotkey_source_mask);
9c0a76e1
HMH		 3470 if (res < 0 && res != -ENXIO) {
3471 hotkey_exit();
3472 return res;
3473 }
0d922e3b
HMH		 3474 hotkey_user_mask = (hotkey_acpi_mask | hotkey_source_mask)
3475 & ~hotkey_reserved_mask;
3476 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY,
3477 "initial masks: user=0x%08x, fw=0x%08x, poll=0x%08x\n",
3478 hotkey_user_mask, hotkey_acpi_mask, hotkey_source_mask);
01e88f25 3479
56e2c200
HMH		 3480 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY,
3481 "legacy ibm/hotkey event reporting over procfs %s\n",
9c0a76e1
HMH		 3482 (hotkey_report_mode < 2) ?
3483 "enabled" : "disabled");
01e88f25 3484
9c0a76e1
HMH		 3485 tpacpi_inputdev->open = &hotkey_inputdev_open;
3486 tpacpi_inputdev->close = &hotkey_inputdev_close;
56b6aeb0 3487
db25f16d 3488 hotkey_poll_setup_safe(true);
56b6aeb0 3489
9c0a76e1 3490 return 0;
01e88f25 3491
9c0a76e1
HMH		 3492err_exit:
3493 delete_attr_set(hotkey_dev_attributes, &tpacpi_pdev->dev.kobj);
3494 hotkey_dev_attributes = NULL;
a0416420 3495
9c0a76e1 3496 return (res < 0)? res : 1;
56b6aeb0
HMH		 3497}
3498
3827e7a3
HMH		 3499static bool hotkey_notify_hotkey(const u32 hkey,
3500 bool *send_acpi_ev,
3501 bool *ignore_acpi_ev)
3502{
3503 /* 0x1000-0x1FFF: key presses */
3504 unsigned int scancode = hkey & 0xfff;
3505 *send_acpi_ev = true;
3506 *ignore_acpi_ev = false;
3507
34a656d2
HMH		 3508 /* HKEY event 0x1001 is scancode 0x00 */
3509 if (scancode > 0 && scancode <= TPACPI_HOTKEY_MAP_LEN) {
3827e7a3
HMH		 3510 scancode--;
3511 if (!(hotkey_source_mask & (1 << scancode))) {
0d922e3b 3512 tpacpi_input_send_key_masked(scancode);
3827e7a3
HMH		 3513 *send_acpi_ev = false;
3514 } else {
3515 *ignore_acpi_ev = true;
3516 }
3517 return true;
3518 }
3519 return false;
3520}
3521
3522static bool hotkey_notify_wakeup(const u32 hkey,
3523 bool *send_acpi_ev,
3524 bool *ignore_acpi_ev)
3525{
3526 /* 0x2000-0x2FFF: Wakeup reason */
3527 *send_acpi_ev = true;
3528 *ignore_acpi_ev = false;
3529
3530 switch (hkey) {
67bcae6e
HMH		 3531 case TP_HKEY_EV_WKUP_S3_UNDOCK: /* suspend, undock */
3532 case TP_HKEY_EV_WKUP_S4_UNDOCK: /* hibernation, undock */
3827e7a3
HMH		 3533 hotkey_wakeup_reason = TP_ACPI_WAKEUP_UNDOCK;
3534 *ignore_acpi_ev = true;
3535 break;
3536
67bcae6e
HMH		 3537 case TP_HKEY_EV_WKUP_S3_BAYEJ: /* suspend, bay eject */
3538 case TP_HKEY_EV_WKUP_S4_BAYEJ: /* hibernation, bay eject */
3827e7a3
HMH		 3539 hotkey_wakeup_reason = TP_ACPI_WAKEUP_BAYEJ;
3540 *ignore_acpi_ev = true;
3541 break;
3542
67bcae6e
HMH		 3543 case TP_HKEY_EV_WKUP_S3_BATLOW: /* Battery on critical low level/S3 */
3544 case TP_HKEY_EV_WKUP_S4_BATLOW: /* Battery on critical low level/S4 */
106b4e66
HMH		 3545 printk(TPACPI_ALERT
3546 "EMERGENCY WAKEUP: battery almost empty\n");
3547 /* how to auto-heal: */
3548 /* 2313: woke up from S3, go to S4/S5 */
3549 /* 2413: woke up from S4, go to S5 */
3550 break;
3551
3827e7a3
HMH		 3552 default:
3553 return false;
3554 }
3555
3556 if (hotkey_wakeup_reason != TP_ACPI_WAKEUP_NONE) {
3557 printk(TPACPI_INFO
3558 "woke up due to a hot-unplug "
3559 "request...\n");
3560 hotkey_wakeup_reason_notify_change();
3561 }
3562 return true;
3563}
3564
3565static bool hotkey_notify_usrevent(const u32 hkey,
3566 bool *send_acpi_ev,
3567 bool *ignore_acpi_ev)
3568{
3569 /* 0x5000-0x5FFF: human interface helpers */
3570 *send_acpi_ev = true;
3571 *ignore_acpi_ev = false;
3572
3573 switch (hkey) {
67bcae6e
HMH		 3574 case TP_HKEY_EV_PEN_INSERTED: /* X61t: tablet pen inserted into bay */
3575 case TP_HKEY_EV_PEN_REMOVED: /* X61t: tablet pen removed from bay */
3827e7a3
HMH		 3576 return true;
3577
67bcae6e
HMH		 3578 case TP_HKEY_EV_TABLET_TABLET: /* X41t-X61t: tablet mode */
3579 case TP_HKEY_EV_TABLET_NOTEBOOK: /* X41t-X61t: normal mode */
3827e7a3
HMH		 3580 tpacpi_input_send_tabletsw();
3581 hotkey_tablet_mode_notify_change();
3582 *send_acpi_ev = false;
3583 return true;
3584
67bcae6e
HMH		 3585 case TP_HKEY_EV_LID_CLOSE: /* Lid closed */
3586 case TP_HKEY_EV_LID_OPEN: /* Lid opened */
3587 case TP_HKEY_EV_BRGHT_CHANGED: /* brightness changed */
176dd985 3588 /* do not propagate these events */
3827e7a3
HMH		 3589 *ignore_acpi_ev = true;
3590 return true;
3591
3592 default:
3593 return false;
3594 }
3595}
3596
9ebd9e83
HMH		 3597static void thermal_dump_all_sensors(void);
3598
106b4e66
HMH		 3599static bool hotkey_notify_thermal(const u32 hkey,
3600 bool *send_acpi_ev,
3601 bool *ignore_acpi_ev)
3602{
9ebd9e83
HMH		 3603 bool known = true;
3604
106b4e66
HMH		 3605 /* 0x6000-0x6FFF: thermal alarms */
3606 *send_acpi_ev = true;
3607 *ignore_acpi_ev = false;
3608
3609 switch (hkey) {
9ebd9e83
HMH		 3610 case TP_HKEY_EV_THM_TABLE_CHANGED:
3611 printk(TPACPI_INFO
3612 "EC reports that Thermal Table has changed\n");
3613 /* recommended action: do nothing, we don't have
3614 * Lenovo ATM information */
3615 return true;
67bcae6e 3616 case TP_HKEY_EV_ALARM_BAT_HOT:
106b4e66
HMH		 3617 printk(TPACPI_CRIT
3618 "THERMAL ALARM: battery is too hot!\n");
3619 /* recommended action: warn user through gui */
9ebd9e83 3620 break;
67bcae6e 3621 case TP_HKEY_EV_ALARM_BAT_XHOT:
106b4e66
HMH		 3622 printk(TPACPI_ALERT
3623 "THERMAL EMERGENCY: battery is extremely hot!\n");
3624 /* recommended action: immediate sleep/hibernate */
9ebd9e83 3625 break;
67bcae6e 3626 case TP_HKEY_EV_ALARM_SENSOR_HOT:
106b4e66
HMH		 3627 printk(TPACPI_CRIT
3628 "THERMAL ALARM: "
3629 "a sensor reports something is too hot!\n");
3630 /* recommended action: warn user through gui, that */
3631 /* some internal component is too hot */
9ebd9e83 3632 break;
67bcae6e 3633 case TP_HKEY_EV_ALARM_SENSOR_XHOT:
106b4e66
HMH		 3634 printk(TPACPI_ALERT
3635 "THERMAL EMERGENCY: "
3636 "a sensor reports something is extremely hot!\n");
3637 /* recommended action: immediate sleep/hibernate */
9ebd9e83 3638 break;
106b4e66
HMH		 3639 default:
3640 printk(TPACPI_ALERT
3641 "THERMAL ALERT: unknown thermal alarm received\n");
9ebd9e83 3642 known = false;
106b4e66 3643 }
9ebd9e83
HMH		 3644
3645 thermal_dump_all_sensors();
3646
3647 return known;
106b4e66
HMH		 3648}
3649
56b6aeb0
HMH		 3650static void hotkey_notify(struct ibm_struct *ibm, u32 event)
3651{
6a38abbf 3652 u32 hkey;
3827e7a3
HMH		 3653 bool send_acpi_ev;
3654 bool ignore_acpi_ev;
3655 bool known_ev;
3eea123d
HMH		 3656
3657 if (event != 0x80) {
35ff8b9f
HMH		 3658 printk(TPACPI_ERR
3659 "unknown HKEY notification event %d\n", event);
3eea123d 3660 /* forward it to userspace, maybe it knows how to handle it */
35ff8b9f
HMH		 3661 acpi_bus_generate_netlink_event(
3662 ibm->acpi->device->pnp.device_class,
e0b36fc5 3663 dev_name(&ibm->acpi->device->dev),
35ff8b9f 3664 event, 0);
3eea123d
HMH		 3665 return;
3666 }
3667
3668 while (1) {
3669 if (!acpi_evalf(hkey_handle, &hkey, "MHKP", "d")) {
e0c7dfe7 3670 printk(TPACPI_ERR "failed to retrieve HKEY event\n");
3eea123d
HMH		 3671 return;
3672 }
3673
3674 if (hkey == 0) {
3675 /* queue empty */
3676 return;
3677 }
3678
3827e7a3
HMH		 3679 send_acpi_ev = true;
3680 ignore_acpi_ev = false;
56b6aeb0 3681
ff80f137
HMH		 3682 switch (hkey >> 12) {
3683 case 1:
3684 /* 0x1000-0x1FFF: key presses */
3827e7a3
HMH		 3685 known_ev = hotkey_notify_hotkey(hkey, &send_acpi_ev,
3686 &ignore_acpi_ev);
ff80f137 3687 break;
a713b4d7 3688 case 2:
3827e7a3
HMH		 3689 /* 0x2000-0x2FFF: Wakeup reason */
3690 known_ev = hotkey_notify_wakeup(hkey, &send_acpi_ev,
3691 &ignore_acpi_ev);
a713b4d7
HMH		 3692 break;
3693 case 3:
3827e7a3 3694 /* 0x3000-0x3FFF: bay-related wakeups */
bf8b29c8
HMH		 3695 switch (hkey) {
3696 case TP_HKEY_EV_BAYEJ_ACK:
a713b4d7
HMH		 3697 hotkey_autosleep_ack = 1;
3698 printk(TPACPI_INFO
3699 "bay ejected\n");
50ebec09 3700 hotkey_wakeup_hotunplug_complete_notify_change();
3827e7a3 3701 known_ev = true;
bf8b29c8
HMH		 3702 break;
3703 case TP_HKEY_EV_OPTDRV_EJ:
3704 /* FIXME: kick libata if SATA link offline */
3705 known_ev = true;
3706 break;
3707 default:
3827e7a3 3708 known_ev = false;
a713b4d7
HMH		 3709 }
3710 break;
3711 case 4:
3827e7a3 3712 /* 0x4000-0x4FFF: dock-related wakeups */
67bcae6e 3713 if (hkey == TP_HKEY_EV_UNDOCK_ACK) {
a713b4d7
HMH		 3714 hotkey_autosleep_ack = 1;
3715 printk(TPACPI_INFO
3716 "undocked\n");
50ebec09 3717 hotkey_wakeup_hotunplug_complete_notify_change();
3827e7a3 3718 known_ev = true;
a713b4d7 3719 } else {
3827e7a3 3720 known_ev = false;
a713b4d7
HMH		 3721 }
3722 break;
ff80f137 3723 case 5:
d1edb2b5 3724 /* 0x5000-0x5FFF: human interface helpers */
3827e7a3
HMH		 3725 known_ev = hotkey_notify_usrevent(hkey, &send_acpi_ev,
3726 &ignore_acpi_ev);
ff80f137 3727 break;
106b4e66
HMH		 3728 case 6:
3729 /* 0x6000-0x6FFF: thermal alarms */
3730 known_ev = hotkey_notify_thermal(hkey, &send_acpi_ev,
3731 &ignore_acpi_ev);
3732 break;
ff80f137
HMH		 3733 case 7:
3734 /* 0x7000-0x7FFF: misc */
67bcae6e
HMH		 3735 if (tp_features.hotkey_wlsw &&
3736 hkey == TP_HKEY_EV_RFKILL_CHANGED) {
733e27c1 3737 tpacpi_send_radiosw_update();
3b64b51d 3738 send_acpi_ev = 0;
3827e7a3 3739 known_ev = true;
6a38abbf 3740 break;
6a38abbf 3741 }
ff80f137
HMH		 3742 /* fallthrough to default */
3743 default:
3827e7a3 3744 known_ev = false;
3b64b51d 3745 }
3827e7a3 3746 if (!known_ev) {
35ff8b9f
HMH		 3747 printk(TPACPI_NOTICE
3748 "unhandled HKEY event 0x%04x\n", hkey);
cb429358
HMH		 3749 printk(TPACPI_NOTICE
3750 "please report the conditions when this "
3751 "event happened to %s\n", TPACPI_MAIL);
6a38abbf 3752 }
ff80f137 3753
3eea123d 3754 /* Legacy events */
35ff8b9f
HMH		 3755 if (!ignore_acpi_ev &&
3756 (send_acpi_ev || hotkey_report_mode < 2)) {
3757 acpi_bus_generate_proc_event(ibm->acpi->device,
3758 event, hkey);
3e5ce914 3759 }
ff80f137 3760
3eea123d 3761 /* netlink events */
3e5ce914 3762 if (!ignore_acpi_ev && send_acpi_ev) {
35ff8b9f
HMH		 3763 acpi_bus_generate_netlink_event(
3764 ibm->acpi->device->pnp.device_class,
e0b36fc5 3765 dev_name(&ibm->acpi->device->dev),
35ff8b9f 3766 event, hkey);
3eea123d 3767 }
56b6aeb0
HMH		 3768 }
3769}
3770
a713b4d7
HMH		 3771static void hotkey_suspend(pm_message_t state)
3772{
3773 /* Do these on suspend, we get the events on early resume! */
3774 hotkey_wakeup_reason = TP_ACPI_WAKEUP_NONE;
3775 hotkey_autosleep_ack = 0;
3776}
3777
5c29d58f
HMH		 3778static void hotkey_resume(void)
3779{
d64c81c4
HMH		 3780 tpacpi_disable_brightness_delay();
3781
0d922e3b
HMH		 3782 if (hotkey_status_set(true) < 0 ||
3783 hotkey_mask_set(hotkey_acpi_mask) < 0)
35ff8b9f 3784 printk(TPACPI_ERR
0d922e3b
HMH		 3785 "error while attempting to reset the event "
3786 "firmware interface\n");
3787
733e27c1 3788 tpacpi_send_radiosw_update();
6c231bd5 3789 hotkey_tablet_mode_notify_change();
50ebec09
HMH		 3790 hotkey_wakeup_reason_notify_change();
3791 hotkey_wakeup_hotunplug_complete_notify_change();
db25f16d 3792 hotkey_poll_setup_safe(false);
5c29d58f
HMH		 3793}
3794
a0416420 3795/* procfs -------------------------------------------------------------- */
887965e6 3796static int hotkey_read(struct seq_file *m)
1da177e4 3797{
ae92bd17 3798 int res, status;
1da177e4 3799
d8fd94d9 3800 if (!tp_features.hotkey) {
887965e6
AD		 3801 seq_printf(m, "status:\t\tnot supported\n");
3802 return 0;
78f81cc4
BD		 3803 }
3804
7646ea88 3805 if (mutex_lock_killable(&hotkey_mutex))
fc589a3c 3806 return -ERESTARTSYS;
b2c985e7
HMH		 3807 res = hotkey_status_get(&status);
3808 if (!res)
3809 res = hotkey_mask_get();
40ca9fdf 3810 mutex_unlock(&hotkey_mutex);
b86c4722
HMH		 3811 if (res)
3812 return res;
1da177e4 3813
887965e6 3814 seq_printf(m, "status:\t\t%s\n", enabled(status, 0));
0d922e3b 3815 if (hotkey_all_mask) {
887965e6
AD		 3816 seq_printf(m, "mask:\t\t0x%08x\n", hotkey_user_mask);
3817 seq_printf(m, "commands:\tenable, disable, reset, <mask>\n");
1da177e4 3818 } else {
887965e6
AD		 3819 seq_printf(m, "mask:\t\tnot supported\n");
3820 seq_printf(m, "commands:\tenable, disable, reset\n");
1da177e4
LT		 3821 }
3822
887965e6 3823 return 0;
1da177e4
LT		 3824}
3825
406e988b 3826static void hotkey_enabledisable_warn(bool enable)
2586d566
HMH		 3827{
3828 tpacpi_log_usertask("procfs hotkey enable/disable");
406e988b
HMH		 3829 if (!WARN((tpacpi_lifecycle == TPACPI_LIFE_RUNNING || !enable),
3830 TPACPI_WARN
3831 "hotkey enable/disable functionality has been "
3832 "removed from the driver. Hotkeys are always "
3833 "enabled\n"))
3834 printk(TPACPI_ERR
3835 "Please remove the hotkey=enable module "
3836 "parameter, it is deprecated. Hotkeys are always "
3837 "enabled\n");
2586d566
HMH		 3838}
3839
78f81cc4 3840static int hotkey_write(char *buf)
1da177e4 3841{
2586d566 3842 int res;
ae92bd17 3843 u32 mask;
1da177e4 3844 char *cmd;
1da177e4 3845
d8fd94d9 3846 if (!tp_features.hotkey)
1da177e4
LT		 3847 return -ENODEV;
3848
7646ea88 3849 if (mutex_lock_killable(&hotkey_mutex))
fc589a3c 3850 return -ERESTARTSYS;
40ca9fdf 3851
0d922e3b 3852 mask = hotkey_user_mask;
78f81cc4 3853
40ca9fdf 3854 res = 0;
1da177e4
LT		 3855 while ((cmd = next_cmd(&buf))) {
3856 if (strlencmp(cmd, "enable") == 0) {
406e988b 3857 hotkey_enabledisable_warn(1);
1da177e4 3858 } else if (strlencmp(cmd, "disable") == 0) {
406e988b 3859 hotkey_enabledisable_warn(0);
2586d566 3860 res = -EPERM;
1da177e4 3861 } else if (strlencmp(cmd, "reset") == 0) {
20c9aa46
HMH		 3862 mask = (hotkey_all_mask | hotkey_source_mask)
3863 & ~hotkey_reserved_mask;
1da177e4
LT		 3864 } else if (sscanf(cmd, "0x%x", &mask) == 1) {
3865 /* mask set */
3866 } else if (sscanf(cmd, "%x", &mask) == 1) {
3867 /* mask set */
40ca9fdf
HMH		 3868 } else {
3869 res = -EINVAL;
3870 goto errexit;
3871 }
1da177e4 3872 }
56e2c200 3873
0d922e3b 3874 if (!res) {
56e2c200
HMH		 3875 tpacpi_disclose_usertask("procfs hotkey",
3876 "set mask to 0x%08x\n", mask);
0d922e3b
HMH		 3877 res = hotkey_user_mask_set(mask);
3878 }
1da177e4 3879
40ca9fdf
HMH		 3880errexit:
3881 mutex_unlock(&hotkey_mutex);
3882 return res;
78f81cc4 3883}
1da177e4 3884
1ba90e3a 3885static const struct acpi_device_id ibm_htk_device_ids[] = {
e0c7dfe7 3886 {TPACPI_ACPI_HKEY_HID, 0},
1ba90e3a
TR		 3887 {"", 0},
3888};
3889
8d376cd6 3890static struct tp_acpi_drv_struct ibm_hotkey_acpidriver = {
1ba90e3a 3891 .hid = ibm_htk_device_ids,
8d376cd6
HMH		 3892 .notify = hotkey_notify,
3893 .handle = &hkey_handle,
3894 .type = ACPI_DEVICE_NOTIFY,
3895};
3896
a5763f22
HMH		 3897static struct ibm_struct hotkey_driver_data = {
3898 .name = "hotkey",
a5763f22
HMH		 3899 .read = hotkey_read,
3900 .write = hotkey_write,
3901 .exit = hotkey_exit,
5c29d58f 3902 .resume = hotkey_resume,
a713b4d7 3903 .suspend = hotkey_suspend,
8d376cd6 3904 .acpi = &ibm_hotkey_acpidriver,
a5763f22
HMH		 3905};
3906
56b6aeb0
HMH		 3907/*************************************************************************
3908 * Bluetooth subdriver
3909 */
1da177e4 3910
f74a27d4
HMH		 3911enum {
3912 /* ACPI GBDC/SBDC bits */
3913 TP_ACPI_BLUETOOTH_HWPRESENT = 0x01, /* Bluetooth hw available */
3914 TP_ACPI_BLUETOOTH_RADIOSSW = 0x02, /* Bluetooth radio enabled */
153f8220 3915 TP_ACPI_BLUETOOTH_RESUMECTRL = 0x04, /* Bluetooth state at resume:
08fedfc9 3916 0 = disable, 1 = enable */
153f8220
HMH		 3917};
3918
3919enum {
3920 /* ACPI \BLTH commands */
3921 TP_ACPI_BLTH_GET_ULTRAPORT_ID = 0x00, /* Get Ultraport BT ID */
3922 TP_ACPI_BLTH_GET_PWR_ON_RESUME = 0x01, /* Get power-on-resume state */
3923 TP_ACPI_BLTH_PWR_ON_ON_RESUME = 0x02, /* Resume powered on */
3924 TP_ACPI_BLTH_PWR_OFF_ON_RESUME = 0x03, /* Resume powered off */
3925 TP_ACPI_BLTH_SAVE_STATE = 0x05, /* Save state for S4/S5 */
f74a27d4
HMH		 3926};
3927
bee4cd9b
HMH		 3928#define TPACPI_RFK_BLUETOOTH_SW_NAME "tpacpi_bluetooth_sw"
3929
19d337df 3930static int bluetooth_get_status(void)
07431ec8
HMH		 3931{
3932 int status;
3933
a73f3091
HMH		 3934#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
3935 if (dbg_bluetoothemul)
3936 return (tpacpi_bluetooth_emulstate) ?
19d337df 3937 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF;
a73f3091
HMH		 3938#endif
3939
07431ec8
HMH		 3940 if (!acpi_evalf(hkey_handle, &status, "GBDC", "d"))
3941 return -EIO;
3942
0e74dc26 3943 return ((status & TP_ACPI_BLUETOOTH_RADIOSSW) != 0) ?
19d337df 3944 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF;
07431ec8
HMH		 3945}
3946
19d337df 3947static int bluetooth_set_status(enum tpacpi_rfkill_state state)
0e74dc26
HMH		 3948{
3949 int status;
3950
bee4cd9b 3951 vdbg_printk(TPACPI_DBG_RFKILL,
19d337df
JB		 3952 "will attempt to %s bluetooth\n",
3953 (state == TPACPI_RFK_RADIO_ON) ? "enable" : "disable");
bee4cd9b 3954
a73f3091
HMH		 3955#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
3956 if (dbg_bluetoothemul) {
19d337df 3957 tpacpi_bluetooth_emulstate = (state == TPACPI_RFK_RADIO_ON);
a73f3091
HMH		 3958 return 0;
3959 }
3960#endif
3961
19d337df 3962 if (state == TPACPI_RFK_RADIO_ON)
08fedfc9
HMH		 3963 status = TP_ACPI_BLUETOOTH_RADIOSSW
3964 | TP_ACPI_BLUETOOTH_RESUMECTRL;
3965 else
3966 status = 0;
19d337df 3967
07431ec8
HMH		 3968 if (!acpi_evalf(hkey_handle, NULL, "SBDC", "vd", status))
3969 return -EIO;
3970
3971 return 0;
3972}
f74a27d4 3973
d3a6ade4
HMH		 3974/* sysfs bluetooth enable ---------------------------------------------- */
3975static ssize_t bluetooth_enable_show(struct device *dev,
3976 struct device_attribute *attr,
3977 char *buf)
3978{
19d337df
JB		 3979 return tpacpi_rfk_sysfs_enable_show(TPACPI_RFK_BLUETOOTH_SW_ID,
3980 attr, buf);
d3a6ade4
HMH		 3981}
3982
3983static ssize_t bluetooth_enable_store(struct device *dev,
3984 struct device_attribute *attr,
3985 const char *buf, size_t count)
3986{
19d337df
JB		 3987 return tpacpi_rfk_sysfs_enable_store(TPACPI_RFK_BLUETOOTH_SW_ID,
3988 attr, buf, count);
d3a6ade4
HMH		 3989}
3990
3991static struct device_attribute dev_attr_bluetooth_enable =
cc4c24e1 3992 __ATTR(bluetooth_enable, S_IWUSR | S_IRUGO,
d3a6ade4
HMH		 3993 bluetooth_enable_show, bluetooth_enable_store);
3994
3995/* --------------------------------------------------------------------- */
3996
3997static struct attribute *bluetooth_attributes[] = {
3998 &dev_attr_bluetooth_enable.attr,
3999 NULL
4000};
4001
4002static const struct attribute_group bluetooth_attr_group = {
d3a6ade4
HMH		 4003 .attrs = bluetooth_attributes,
4004};
4005
19d337df
JB		 4006static const struct tpacpi_rfk_ops bluetooth_tprfk_ops = {
4007 .get_status = bluetooth_get_status,
4008 .set_status = bluetooth_set_status,
4009};
0e74dc26 4010
90d9d3c7
HMH		 4011static void bluetooth_shutdown(void)
4012{
4013 /* Order firmware to save current state to NVRAM */
4014 if (!acpi_evalf(NULL, NULL, "\\BLTH", "vd",
4015 TP_ACPI_BLTH_SAVE_STATE))
4016 printk(TPACPI_NOTICE
4017 "failed to save bluetooth state to NVRAM\n");
bee4cd9b
HMH		 4018 else
4019 vdbg_printk(TPACPI_DBG_RFKILL,
4020 "bluestooth state saved to NVRAM\n");
90d9d3c7
HMH		 4021}
4022
07431ec8
HMH		 4023static void bluetooth_exit(void)
4024{
4025 sysfs_remove_group(&tpacpi_pdev->dev.kobj,
4026 &bluetooth_attr_group);
19d337df
JB		 4027
4028 tpacpi_destroy_rfkill(TPACPI_RFK_BLUETOOTH_SW_ID);
4029
4030 bluetooth_shutdown();
07431ec8
HMH		 4031}
4032
a5763f22 4033static int __init bluetooth_init(struct ibm_init_struct *iibm)
1da177e4 4034{
d3a6ade4 4035 int res;
d6fdd1e9
HMH		 4036 int status = 0;
4037
bee4cd9b
HMH		 4038 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL,
4039 "initializing bluetooth subdriver\n");
fe08bc4b 4040
e0c7dfe7 4041 TPACPI_ACPIHANDLE_INIT(hkey);
5fba344c 4042
78f81cc4
BD		 4043 /* bluetooth not supported on 570, 600e/x, 770e, 770x, A21e, A2xm/p,
4044 G4x, R30, R31, R40e, R50e, T20-22, X20-21 */
d8fd94d9 4045 tp_features.bluetooth = hkey_handle &&
d6fdd1e9
HMH		 4046 acpi_evalf(hkey_handle, &status, "GBDC", "qd");
4047
bee4cd9b
HMH		 4048 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL,
4049 "bluetooth is %s, status 0x%02x\n",
d6fdd1e9
HMH		 4050 str_supported(tp_features.bluetooth),
4051 status);
4052
a73f3091
HMH		 4053#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
4054 if (dbg_bluetoothemul) {
4055 tp_features.bluetooth = 1;
4056 printk(TPACPI_INFO
4057 "bluetooth switch emulation enabled\n");
4058 } else
4059#endif
3a872080
HMH		 4060 if (tp_features.bluetooth &&
4061 !(status & TP_ACPI_BLUETOOTH_HWPRESENT)) {
4062 /* no bluetooth hardware present in system */
4063 tp_features.bluetooth = 0;
bee4cd9b 4064 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL,
3a872080
HMH		 4065 "bluetooth hardware not installed\n");
4066 }
4067
0e74dc26
HMH		 4068 if (!tp_features.bluetooth)
4069 return 1;
4070
0e74dc26 4071 res = tpacpi_new_rfkill(TPACPI_RFK_BLUETOOTH_SW_ID,
19d337df 4072 &bluetooth_tprfk_ops,
0e74dc26 4073 RFKILL_TYPE_BLUETOOTH,
bee4cd9b 4074 TPACPI_RFK_BLUETOOTH_SW_NAME,
19d337df
JB		 4075 true);
4076 if (res)
4077 return res;
4078
4079 res = sysfs_create_group(&tpacpi_pdev->dev.kobj,
4080 &bluetooth_attr_group);
0e74dc26 4081 if (res) {
19d337df 4082 tpacpi_destroy_rfkill(TPACPI_RFK_BLUETOOTH_SW_ID);
0e74dc26 4083 return res;
d6fdd1e9 4084 }
fe08bc4b 4085
0e74dc26 4086 return 0;
1da177e4
LT		 4087}
4088
d3a6ade4 4089/* procfs -------------------------------------------------------------- */
887965e6 4090static int bluetooth_read(struct seq_file *m)
1da177e4 4091{
887965e6 4092 return tpacpi_rfk_procfs_read(TPACPI_RFK_BLUETOOTH_SW_ID, m);
1da177e4
LT		 4093}
4094
78f81cc4 4095static int bluetooth_write(char *buf)
1da177e4 4096{
19d337df 4097 return tpacpi_rfk_procfs_write(TPACPI_RFK_BLUETOOTH_SW_ID, buf);
1da177e4
LT		 4098}
4099
a5763f22
HMH		 4100static struct ibm_struct bluetooth_driver_data = {
4101 .name = "bluetooth",
4102 .read = bluetooth_read,
4103 .write = bluetooth_write,
d3a6ade4 4104 .exit = bluetooth_exit,
90d9d3c7 4105 .shutdown = bluetooth_shutdown,
a5763f22
HMH		 4106};
4107
56b6aeb0
HMH		 4108/*************************************************************************
4109 * Wan subdriver
4110 */
4111
f74a27d4
HMH		 4112enum {
4113 /* ACPI GWAN/SWAN bits */
4114 TP_ACPI_WANCARD_HWPRESENT = 0x01, /* Wan hw available */
4115 TP_ACPI_WANCARD_RADIOSSW = 0x02, /* Wan radio enabled */
153f8220 4116 TP_ACPI_WANCARD_RESUMECTRL = 0x04, /* Wan state at resume:
08fedfc9 4117 0 = disable, 1 = enable */
f74a27d4
HMH		 4118};
4119
bee4cd9b
HMH		 4120#define TPACPI_RFK_WWAN_SW_NAME "tpacpi_wwan_sw"
4121
19d337df 4122static int wan_get_status(void)
07431ec8
HMH		 4123{
4124 int status;
4125
a73f3091
HMH		 4126#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
4127 if (dbg_wwanemul)
4128 return (tpacpi_wwan_emulstate) ?
19d337df 4129 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF;
a73f3091
HMH		 4130#endif
4131
07431ec8
HMH		 4132 if (!acpi_evalf(hkey_handle, &status, "GWAN", "d"))
4133 return -EIO;
4134
0e74dc26 4135 return ((status & TP_ACPI_WANCARD_RADIOSSW) != 0) ?
19d337df 4136 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF;
0e74dc26
HMH		 4137}
4138
19d337df 4139static int wan_set_status(enum tpacpi_rfkill_state state)
07431ec8
HMH		 4140{
4141 int status;
4142
bee4cd9b 4143 vdbg_printk(TPACPI_DBG_RFKILL,
19d337df
JB		 4144 "will attempt to %s wwan\n",
4145 (state == TPACPI_RFK_RADIO_ON) ? "enable" : "disable");
bee4cd9b 4146
a73f3091
HMH		 4147#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
4148 if (dbg_wwanemul) {
19d337df 4149 tpacpi_wwan_emulstate = (state == TPACPI_RFK_RADIO_ON);
a73f3091
HMH		 4150 return 0;
4151 }
4152#endif
4153
19d337df 4154 if (state == TPACPI_RFK_RADIO_ON)
08fedfc9
HMH		 4155 status = TP_ACPI_WANCARD_RADIOSSW
4156 | TP_ACPI_WANCARD_RESUMECTRL;
4157 else
4158 status = 0;
19d337df 4159
07431ec8
HMH		 4160 if (!acpi_evalf(hkey_handle, NULL, "SWAN", "vd", status))
4161 return -EIO;
4162
4163 return 0;
4164}
f74a27d4 4165
d3a6ade4
HMH		 4166/* sysfs wan enable ---------------------------------------------------- */
4167static ssize_t wan_enable_show(struct device *dev,
4168 struct device_attribute *attr,
4169 char *buf)
4170{
19d337df
JB		 4171 return tpacpi_rfk_sysfs_enable_show(TPACPI_RFK_WWAN_SW_ID,
4172 attr, buf);
d3a6ade4
HMH		 4173}
4174
4175static ssize_t wan_enable_store(struct device *dev,
4176 struct device_attribute *attr,
4177 const char *buf, size_t count)
4178{
19d337df
JB		 4179 return tpacpi_rfk_sysfs_enable_store(TPACPI_RFK_WWAN_SW_ID,
4180 attr, buf, count);
d3a6ade4
HMH		 4181}
4182
4183static struct device_attribute dev_attr_wan_enable =
cc4c24e1 4184 __ATTR(wwan_enable, S_IWUSR | S_IRUGO,
d3a6ade4
HMH		 4185 wan_enable_show, wan_enable_store);
4186
4187/* --------------------------------------------------------------------- */
4188
4189static struct attribute *wan_attributes[] = {
4190 &dev_attr_wan_enable.attr,
4191 NULL
4192};
4193
4194static const struct attribute_group wan_attr_group = {
d3a6ade4
HMH		 4195 .attrs = wan_attributes,
4196};
4197
19d337df
JB		 4198static const struct tpacpi_rfk_ops wan_tprfk_ops = {
4199 .get_status = wan_get_status,
4200 .set_status = wan_set_status,
4201};
0e74dc26 4202
90d9d3c7
HMH		 4203static void wan_shutdown(void)
4204{
4205 /* Order firmware to save current state to NVRAM */
4206 if (!acpi_evalf(NULL, NULL, "\\WGSV", "vd",
4207 TP_ACPI_WGSV_SAVE_STATE))
4208 printk(TPACPI_NOTICE
4209 "failed to save WWAN state to NVRAM\n");
bee4cd9b
HMH		 4210 else
4211 vdbg_printk(TPACPI_DBG_RFKILL,
4212 "WWAN state saved to NVRAM\n");
90d9d3c7
HMH		 4213}
4214
07431ec8
HMH		 4215static void wan_exit(void)
4216{
4217 sysfs_remove_group(&tpacpi_pdev->dev.kobj,
4218 &wan_attr_group);
19d337df
JB		 4219
4220 tpacpi_destroy_rfkill(TPACPI_RFK_WWAN_SW_ID);
4221
4222 wan_shutdown();
07431ec8
HMH		 4223}
4224
a5763f22 4225static int __init wan_init(struct ibm_init_struct *iibm)
42adb53c 4226{
d3a6ade4 4227 int res;
d6fdd1e9
HMH		 4228 int status = 0;
4229
bee4cd9b
HMH		 4230 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL,
4231 "initializing wan subdriver\n");
fe08bc4b 4232
e0c7dfe7 4233 TPACPI_ACPIHANDLE_INIT(hkey);
5fba344c 4234
d8fd94d9 4235 tp_features.wan = hkey_handle &&
d6fdd1e9
HMH		 4236 acpi_evalf(hkey_handle, &status, "GWAN", "qd");
4237
bee4cd9b
HMH		 4238 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL,
4239 "wan is %s, status 0x%02x\n",
d6fdd1e9
HMH		 4240 str_supported(tp_features.wan),
4241 status);
4242
a73f3091
HMH		 4243#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
4244 if (dbg_wwanemul) {
4245 tp_features.wan = 1;
4246 printk(TPACPI_INFO
4247 "wwan switch emulation enabled\n");
4248 } else
4249#endif
3a872080
HMH		 4250 if (tp_features.wan &&
4251 !(status & TP_ACPI_WANCARD_HWPRESENT)) {
4252 /* no wan hardware present in system */
4253 tp_features.wan = 0;
bee4cd9b 4254 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL,
3a872080
HMH		 4255 "wan hardware not installed\n");
4256 }
4257
0e74dc26
HMH		 4258 if (!tp_features.wan)
4259 return 1;
4260
0e74dc26 4261 res = tpacpi_new_rfkill(TPACPI_RFK_WWAN_SW_ID,
19d337df 4262 &wan_tprfk_ops,
0e74dc26 4263 RFKILL_TYPE_WWAN,
bee4cd9b 4264 TPACPI_RFK_WWAN_SW_NAME,
19d337df
JB		 4265 true);
4266 if (res)
4267 return res;
4268
4269 res = sysfs_create_group(&tpacpi_pdev->dev.kobj,
4270 &wan_attr_group);
4271
0e74dc26 4272 if (res) {
19d337df 4273 tpacpi_destroy_rfkill(TPACPI_RFK_WWAN_SW_ID);
0e74dc26 4274 return res;
d6fdd1e9 4275 }
fe08bc4b 4276
0e74dc26 4277 return 0;
42adb53c
JF		 4278}
4279
d3a6ade4 4280/* procfs -------------------------------------------------------------- */
887965e6 4281static int wan_read(struct seq_file *m)
42adb53c 4282{
887965e6 4283 return tpacpi_rfk_procfs_read(TPACPI_RFK_WWAN_SW_ID, m);
42adb53c
JF		 4284}
4285
4286static int wan_write(char *buf)
4287{
19d337df 4288 return tpacpi_rfk_procfs_write(TPACPI_RFK_WWAN_SW_ID, buf);
42adb53c
JF		 4289}
4290
a5763f22
HMH		 4291static struct ibm_struct wan_driver_data = {
4292 .name = "wan",
4293 .read = wan_read,
4294 .write = wan_write,
d3a6ade4 4295 .exit = wan_exit,
90d9d3c7 4296 .shutdown = wan_shutdown,
a5763f22
HMH		 4297};
4298
0045c0aa
HMH		 4299/*************************************************************************
4300 * UWB subdriver
4301 */
4302
4303enum {
4304 /* ACPI GUWB/SUWB bits */
4305 TP_ACPI_UWB_HWPRESENT = 0x01, /* UWB hw available */
4306 TP_ACPI_UWB_RADIOSSW = 0x02, /* UWB radio enabled */
4307};
4308
bee4cd9b
HMH		 4309#define TPACPI_RFK_UWB_SW_NAME "tpacpi_uwb_sw"
4310
19d337df 4311static int uwb_get_status(void)
0045c0aa
HMH		 4312{
4313 int status;
4314
0045c0aa
HMH		 4315#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
4316 if (dbg_uwbemul)
4317 return (tpacpi_uwb_emulstate) ?
19d337df 4318 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF;
0045c0aa
HMH		 4319#endif
4320
4321 if (!acpi_evalf(hkey_handle, &status, "GUWB", "d"))
4322 return -EIO;
4323
4324 return ((status & TP_ACPI_UWB_RADIOSSW) != 0) ?
19d337df 4325 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF;
0045c0aa
HMH		 4326}
4327
19d337df 4328static int uwb_set_status(enum tpacpi_rfkill_state state)
0045c0aa
HMH		 4329{
4330 int status;
4331
bee4cd9b 4332 vdbg_printk(TPACPI_DBG_RFKILL,
19d337df
JB		 4333 "will attempt to %s UWB\n",
4334 (state == TPACPI_RFK_RADIO_ON) ? "enable" : "disable");
bee4cd9b 4335
0045c0aa
HMH		 4336#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
4337 if (dbg_uwbemul) {
19d337df 4338 tpacpi_uwb_emulstate = (state == TPACPI_RFK_RADIO_ON);
0045c0aa
HMH		 4339 return 0;
4340 }
4341#endif
4342
19d337df
JB		 4343 if (state == TPACPI_RFK_RADIO_ON)
4344 status = TP_ACPI_UWB_RADIOSSW;
4345 else
4346 status = 0;
4347
0045c0aa
HMH		 4348 if (!acpi_evalf(hkey_handle, NULL, "SUWB", "vd", status))
4349 return -EIO;
4350
0045c0aa
HMH		 4351 return 0;
4352}
4353
4354/* --------------------------------------------------------------------- */
4355
19d337df
JB		 4356static const struct tpacpi_rfk_ops uwb_tprfk_ops = {
4357 .get_status = uwb_get_status,
4358 .set_status = uwb_set_status,
4359};
0045c0aa
HMH		 4360
4361static void uwb_exit(void)
4362{
19d337df 4363 tpacpi_destroy_rfkill(TPACPI_RFK_UWB_SW_ID);
0045c0aa
HMH		 4364}
4365
4366static int __init uwb_init(struct ibm_init_struct *iibm)
4367{
4368 int res;
4369 int status = 0;
4370
bee4cd9b
HMH		 4371 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL,
4372 "initializing uwb subdriver\n");
0045c0aa
HMH		 4373
4374 TPACPI_ACPIHANDLE_INIT(hkey);
4375
4376 tp_features.uwb = hkey_handle &&
4377 acpi_evalf(hkey_handle, &status, "GUWB", "qd");
4378
bee4cd9b
HMH		 4379 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL,
4380 "uwb is %s, status 0x%02x\n",
0045c0aa
HMH		 4381 str_supported(tp_features.uwb),
4382 status);
4383
4384#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
4385 if (dbg_uwbemul) {
4386 tp_features.uwb = 1;
4387 printk(TPACPI_INFO
4388 "uwb switch emulation enabled\n");
4389 } else
4390#endif
4391 if (tp_features.uwb &&
4392 !(status & TP_ACPI_UWB_HWPRESENT)) {
4393 /* no uwb hardware present in system */
4394 tp_features.uwb = 0;
4395 dbg_printk(TPACPI_DBG_INIT,
4396 "uwb hardware not installed\n");
4397 }
4398
4399 if (!tp_features.uwb)
4400 return 1;
4401
4402 res = tpacpi_new_rfkill(TPACPI_RFK_UWB_SW_ID,
19d337df 4403 &uwb_tprfk_ops,
0045c0aa 4404 RFKILL_TYPE_UWB,
bee4cd9b 4405 TPACPI_RFK_UWB_SW_NAME,
19d337df 4406 false);
0045c0aa
HMH		 4407 return res;
4408}
4409
4410static struct ibm_struct uwb_driver_data = {
4411 .name = "uwb",
4412 .exit = uwb_exit,
4413 .flags.experimental = 1,
4414};
4415
56b6aeb0
HMH		 4416/*************************************************************************
4417 * Video subdriver
4418 */
4419
d7c1d17d
HMH		 4420#ifdef CONFIG_THINKPAD_ACPI_VIDEO
4421
f74a27d4
HMH		 4422enum video_access_mode {
4423 TPACPI_VIDEO_NONE = 0,
4424 TPACPI_VIDEO_570, /* 570 */
4425 TPACPI_VIDEO_770, /* 600e/x, 770e, 770x */
4426 TPACPI_VIDEO_NEW, /* all others */
4427};
4428
4429enum { /* video status flags, based on VIDEO_570 */
4430 TP_ACPI_VIDEO_S_LCD = 0x01, /* LCD output enabled */
4431 TP_ACPI_VIDEO_S_CRT = 0x02, /* CRT output enabled */
4432 TP_ACPI_VIDEO_S_DVI = 0x08, /* DVI output enabled */
4433};
4434
4435enum { /* TPACPI_VIDEO_570 constants */
4436 TP_ACPI_VIDEO_570_PHSCMD = 0x87, /* unknown magic constant :( */
4437 TP_ACPI_VIDEO_570_PHSMASK = 0x03, /* PHS bits that map to
4438 * video_status_flags */
4439 TP_ACPI_VIDEO_570_PHS2CMD = 0x8b, /* unknown magic constant :( */
4440 TP_ACPI_VIDEO_570_PHS2SET = 0x80, /* unknown magic constant :( */
4441};
4442
9a8e1738
HMH		 4443static enum video_access_mode video_supported;
4444static int video_orig_autosw;
78f81cc4 4445
f74a27d4
HMH		 4446static int video_autosw_get(void);
4447static int video_autosw_set(int enable);
4448
e0c7dfe7 4449TPACPI_HANDLE(vid2, root, "\\_SB.PCI0.AGPB.VID"); /* G41 */
56b6aeb0 4450
a5763f22 4451static int __init video_init(struct ibm_init_struct *iibm)
1da177e4 4452{
78f81cc4
BD		 4453 int ivga;
4454
fe08bc4b
HMH		 4455 vdbg_printk(TPACPI_DBG_INIT, "initializing video subdriver\n");
4456
e0c7dfe7 4457 TPACPI_ACPIHANDLE_INIT(vid);
e28393c0
HMH		 4458 if (tpacpi_is_ibm())
4459 TPACPI_ACPIHANDLE_INIT(vid2);
5fba344c 4460
78f81cc4
BD		 4461 if (vid2_handle && acpi_evalf(NULL, &ivga, "\\IVGA", "d") && ivga)
4462 /* G41, assume IVGA doesn't change */
4463 vid_handle = vid2_handle;
4464
4465 if (!vid_handle)
4466 /* video switching not supported on R30, R31 */
efa27145 4467 video_supported = TPACPI_VIDEO_NONE;
e28393c0
HMH		 4468 else if (tpacpi_is_ibm() &&
4469 acpi_evalf(vid_handle, &video_orig_autosw, "SWIT", "qd"))
78f81cc4 4470 /* 570 */
efa27145 4471 video_supported = TPACPI_VIDEO_570;
e28393c0
HMH		 4472 else if (tpacpi_is_ibm() &&
4473 acpi_evalf(vid_handle, &video_orig_autosw, "^VADL", "qd"))
78f81cc4 4474 /* 600e/x, 770e, 770x */
efa27145 4475 video_supported = TPACPI_VIDEO_770;
78f81cc4
BD		 4476 else
4477 /* all others */
efa27145 4478 video_supported = TPACPI_VIDEO_NEW;
1da177e4 4479
fe08bc4b
HMH		 4480 vdbg_printk(TPACPI_DBG_INIT, "video is %s, mode %d\n",
4481 str_supported(video_supported != TPACPI_VIDEO_NONE),
4482 video_supported);
4483
5fba344c 4484 return (video_supported != TPACPI_VIDEO_NONE)? 0 : 1;
1da177e4
LT		 4485}
4486
56b6aeb0
HMH		 4487static void video_exit(void)
4488{
83f34724
HMH		 4489 dbg_printk(TPACPI_DBG_EXIT,
4490 "restoring original video autoswitch mode\n");
4491 if (video_autosw_set(video_orig_autosw))
e0c7dfe7 4492 printk(TPACPI_ERR "error while trying to restore original "
83f34724 4493 "video autoswitch mode\n");
56b6aeb0
HMH		 4494}
4495
83f34724 4496static int video_outputsw_get(void)
1da177e4
LT		 4497{
4498 int status = 0;
4499 int i;
4500
83f34724
HMH		 4501 switch (video_supported) {
4502 case TPACPI_VIDEO_570:
4503 if (!acpi_evalf(NULL, &i, "\\_SB.PHS", "dd",
4504 TP_ACPI_VIDEO_570_PHSCMD))
4505 return -EIO;
4506 status = i & TP_ACPI_VIDEO_570_PHSMASK;
4507 break;
4508 case TPACPI_VIDEO_770:
4509 if (!acpi_evalf(NULL, &i, "\\VCDL", "d"))
4510 return -EIO;
4511 if (i)
4512 status |= TP_ACPI_VIDEO_S_LCD;
4513 if (!acpi_evalf(NULL, &i, "\\VCDC", "d"))
4514 return -EIO;
4515 if (i)
4516 status |= TP_ACPI_VIDEO_S_CRT;
4517 break;
4518 case TPACPI_VIDEO_NEW:
4519 if (!acpi_evalf(NULL, NULL, "\\VUPS", "vd", 1) ||
4520 !acpi_evalf(NULL, &i, "\\VCDC", "d"))
4521 return -EIO;
4522 if (i)
4523 status |= TP_ACPI_VIDEO_S_CRT;
4524
4525 if (!acpi_evalf(NULL, NULL, "\\VUPS", "vd", 0) ||
4526 !acpi_evalf(NULL, &i, "\\VCDL", "d"))
4527 return -EIO;
4528 if (i)
4529 status |= TP_ACPI_VIDEO_S_LCD;
4530 if (!acpi_evalf(NULL, &i, "\\VCDD", "d"))
4531 return -EIO;
4532 if (i)
4533 status |= TP_ACPI_VIDEO_S_DVI;
4534 break;
4535 default:
4536 return -ENOSYS;
78f81cc4
BD		 4537 }
4538
4539 return status;
4540}
1da177e4 4541
83f34724 4542static int video_outputsw_set(int status)
78f81cc4 4543{
83f34724
HMH		 4544 int autosw;
4545 int res = 0;
4546
4547 switch (video_supported) {
4548 case TPACPI_VIDEO_570:
4549 res = acpi_evalf(NULL, NULL,
4550 "\\_SB.PHS2", "vdd",
4551 TP_ACPI_VIDEO_570_PHS2CMD,
4552 status | TP_ACPI_VIDEO_570_PHS2SET);
4553 break;
4554 case TPACPI_VIDEO_770:
4555 autosw = video_autosw_get();
4556 if (autosw < 0)
4557 return autosw;
1da177e4 4558
83f34724
HMH		 4559 res = video_autosw_set(1);
4560 if (res)
4561 return res;
4562 res = acpi_evalf(vid_handle, NULL,
4563 "ASWT", "vdd", status * 0x100, 0);
4564 if (!autosw && video_autosw_set(autosw)) {
35ff8b9f
HMH		 4565 printk(TPACPI_ERR
4566 "video auto-switch left enabled due to error\n");
83f34724
HMH		 4567 return -EIO;
4568 }
4569 break;
4570 case TPACPI_VIDEO_NEW:
4571 res = acpi_evalf(NULL, NULL, "\\VUPS", "vd", 0x80) &&
35ff8b9f 4572 acpi_evalf(NULL, NULL, "\\VSDS", "vdd", status, 1);
83f34724
HMH		 4573 break;
4574 default:
4575 return -ENOSYS;
4576 }
1da177e4 4577
83f34724 4578 return (res)? 0 : -EIO;
1da177e4
LT		 4579}
4580
83f34724 4581static int video_autosw_get(void)
78f81cc4 4582{
83f34724 4583 int autosw = 0;
78f81cc4 4584
83f34724
HMH		 4585 switch (video_supported) {
4586 case TPACPI_VIDEO_570:
4587 if (!acpi_evalf(vid_handle, &autosw, "SWIT", "d"))
4588 return -EIO;
4589 break;
4590 case TPACPI_VIDEO_770:
4591 case TPACPI_VIDEO_NEW:
4592 if (!acpi_evalf(vid_handle, &autosw, "^VDEE", "d"))
4593 return -EIO;
4594 break;
4595 default:
4596 return -ENOSYS;
4597 }
78f81cc4 4598
83f34724 4599 return autosw & 1;
78f81cc4
BD		 4600}
4601
83f34724 4602static int video_autosw_set(int enable)
78f81cc4 4603{
83f34724
HMH		 4604 if (!acpi_evalf(vid_handle, NULL, "_DOS", "vd", (enable)? 1 : 0))
4605 return -EIO;
4606 return 0;
78f81cc4
BD		 4607}
4608
83f34724 4609static int video_outputsw_cycle(void)
78f81cc4 4610{
83f34724
HMH		 4611 int autosw = video_autosw_get();
4612 int res;
78f81cc4 4613
83f34724
HMH		 4614 if (autosw < 0)
4615 return autosw;
78f81cc4 4616
83f34724
HMH		 4617 switch (video_supported) {
4618 case TPACPI_VIDEO_570:
4619 res = video_autosw_set(1);
4620 if (res)
4621 return res;
4622 res = acpi_evalf(ec_handle, NULL, "_Q16", "v");
4623 break;
4624 case TPACPI_VIDEO_770:
4625 case TPACPI_VIDEO_NEW:
4626 res = video_autosw_set(1);
4627 if (res)
4628 return res;
4629 res = acpi_evalf(vid_handle, NULL, "VSWT", "v");
4630 break;
4631 default:
4632 return -ENOSYS;
4633 }
4634 if (!autosw && video_autosw_set(autosw)) {
35ff8b9f
HMH		 4635 printk(TPACPI_ERR
4636 "video auto-switch left enabled due to error\n");
83f34724 4637 return -EIO;
78f81cc4
BD		 4638 }
4639
83f34724
HMH		 4640 return (res)? 0 : -EIO;
4641}
4642
4643static int video_expand_toggle(void)
4644{
4645 switch (video_supported) {
4646 case TPACPI_VIDEO_570:
4647 return acpi_evalf(ec_handle, NULL, "_Q17", "v")?
4648 0 : -EIO;
4649 case TPACPI_VIDEO_770:
4650 return acpi_evalf(vid_handle, NULL, "VEXP", "v")?
4651 0 : -EIO;
4652 case TPACPI_VIDEO_NEW:
4653 return acpi_evalf(NULL, NULL, "\\VEXP", "v")?
4654 0 : -EIO;
4655 default:
4656 return -ENOSYS;
4657 }
4658 /* not reached */
78f81cc4
BD		 4659}
4660
887965e6 4661static int video_read(struct seq_file *m)
56b6aeb0 4662{
83f34724 4663 int status, autosw;
56b6aeb0 4664
83f34724 4665 if (video_supported == TPACPI_VIDEO_NONE) {
887965e6
AD		 4666 seq_printf(m, "status:\t\tnot supported\n");
4667 return 0;
56b6aeb0
HMH		 4668 }
4669
b525c06c
HMH		 4670 /* Even reads can crash X.org, so... */
4671 if (!capable(CAP_SYS_ADMIN))
4672 return -EPERM;
4673
83f34724
HMH		 4674 status = video_outputsw_get();
4675 if (status < 0)
4676 return status;
4677
4678 autosw = video_autosw_get();
4679 if (autosw < 0)
4680 return autosw;
4681
887965e6
AD		 4682 seq_printf(m, "status:\t\tsupported\n");
4683 seq_printf(m, "lcd:\t\t%s\n", enabled(status, 0));
4684 seq_printf(m, "crt:\t\t%s\n", enabled(status, 1));
efa27145 4685 if (video_supported == TPACPI_VIDEO_NEW)
887965e6
AD		 4686 seq_printf(m, "dvi:\t\t%s\n", enabled(status, 3));
4687 seq_printf(m, "auto:\t\t%s\n", enabled(autosw, 0));
4688 seq_printf(m, "commands:\tlcd_enable, lcd_disable\n");
4689 seq_printf(m, "commands:\tcrt_enable, crt_disable\n");
efa27145 4690 if (video_supported == TPACPI_VIDEO_NEW)
887965e6
AD		 4691 seq_printf(m, "commands:\tdvi_enable, dvi_disable\n");
4692 seq_printf(m, "commands:\tauto_enable, auto_disable\n");
4693 seq_printf(m, "commands:\tvideo_switch, expand_toggle\n");
56b6aeb0 4694
887965e6 4695 return 0;
56b6aeb0
HMH		 4696}
4697
78f81cc4 4698static int video_write(char *buf)
1da177e4
LT		 4699{
4700 char *cmd;
4701 int enable, disable, status;
83f34724 4702 int res;
1da177e4 4703
83f34724 4704 if (video_supported == TPACPI_VIDEO_NONE)
78f81cc4
BD		 4705 return -ENODEV;
4706
b525c06c
HMH		 4707 /* Even reads can crash X.org, let alone writes... */
4708 if (!capable(CAP_SYS_ADMIN))
4709 return -EPERM;
4710
83f34724
HMH		 4711 enable = 0;
4712 disable = 0;
1da177e4
LT		 4713
4714 while ((cmd = next_cmd(&buf))) {
4715 if (strlencmp(cmd, "lcd_enable") == 0) {
83f34724 4716 enable |= TP_ACPI_VIDEO_S_LCD;
1da177e4 4717 } else if (strlencmp(cmd, "lcd_disable") == 0) {
83f34724 4718 disable |= TP_ACPI_VIDEO_S_LCD;
1da177e4 4719 } else if (strlencmp(cmd, "crt_enable") == 0) {
83f34724 4720 enable |= TP_ACPI_VIDEO_S_CRT;
1da177e4 4721 } else if (strlencmp(cmd, "crt_disable") == 0) {
83f34724 4722 disable |= TP_ACPI_VIDEO_S_CRT;
efa27145 4723 } else if (video_supported == TPACPI_VIDEO_NEW &&
78f81cc4 4724 strlencmp(cmd, "dvi_enable") == 0) {
83f34724 4725 enable |= TP_ACPI_VIDEO_S_DVI;
efa27145 4726 } else if (video_supported == TPACPI_VIDEO_NEW &&
78f81cc4 4727 strlencmp(cmd, "dvi_disable") == 0) {
83f34724 4728 disable |= TP_ACPI_VIDEO_S_DVI;
1da177e4 4729 } else if (strlencmp(cmd, "auto_enable") == 0) {
83f34724
HMH		 4730 res = video_autosw_set(1);
4731 if (res)
4732 return res;
1da177e4 4733 } else if (strlencmp(cmd, "auto_disable") == 0) {
83f34724
HMH		 4734 res = video_autosw_set(0);
4735 if (res)
4736 return res;
1da177e4 4737 } else if (strlencmp(cmd, "video_switch") == 0) {
83f34724
HMH		 4738 res = video_outputsw_cycle();
4739 if (res)
4740 return res;
1da177e4 4741 } else if (strlencmp(cmd, "expand_toggle") == 0) {
83f34724
HMH		 4742 res = video_expand_toggle();
4743 if (res)
4744 return res;
1da177e4
LT		 4745 } else
4746 return -EINVAL;
4747 }
4748
4749 if (enable || disable) {
83f34724
HMH		 4750 status = video_outputsw_get();
4751 if (status < 0)
4752 return status;
4753 res = video_outputsw_set((status & ~disable) | enable);
4754 if (res)
4755 return res;
1da177e4
LT		 4756 }
4757
4758 return 0;
4759}
4760
a5763f22
HMH		 4761static struct ibm_struct video_driver_data = {
4762 .name = "video",
4763 .read = video_read,
4764 .write = video_write,
4765 .exit = video_exit,
4766};
4767
d7c1d17d
HMH		 4768#endif /* CONFIG_THINKPAD_ACPI_VIDEO */
4769
56b6aeb0
HMH		 4770/*************************************************************************
4771 * Light (thinklight) subdriver
4772 */
1da177e4 4773
e0c7dfe7
HMH		 4774TPACPI_HANDLE(lght, root, "\\LGHT"); /* A21e, A2xm/p, T20-22, X20-21 */
4775TPACPI_HANDLE(ledb, ec, "LEDB"); /* G4x */
56b6aeb0 4776
4fa6811b
HMH		 4777static int light_get_status(void)
4778{
4779 int status = 0;
4780
4781 if (tp_features.light_status) {
4782 if (!acpi_evalf(ec_handle, &status, "KBLT", "d"))
4783 return -EIO;
4784 return (!!status);
4785 }
4786
4787 return -ENXIO;
4788}
4789
4790static int light_set_status(int status)
4791{
4792 int rc;
4793
4794 if (tp_features.light) {
4795 if (cmos_handle) {
4796 rc = acpi_evalf(cmos_handle, NULL, NULL, "vd",
4797 (status)?
4798 TP_CMOS_THINKLIGHT_ON :
4799 TP_CMOS_THINKLIGHT_OFF);
4800 } else {
4801 rc = acpi_evalf(lght_handle, NULL, NULL, "vd",
4802 (status)? 1 : 0);
4803 }
4804 return (rc)? 0 : -EIO;
4805 }
4806
4807 return -ENXIO;
4808}
4809
e306501d
HMH		 4810static void light_set_status_worker(struct work_struct *work)
4811{
4812 struct tpacpi_led_classdev *data =
4813 container_of(work, struct tpacpi_led_classdev, work);
4814
4815 if (likely(tpacpi_lifecycle == TPACPI_LIFE_RUNNING))
75bd3bf2 4816 light_set_status((data->new_state != TPACPI_LED_OFF));
e306501d
HMH		 4817}
4818
4819static void light_sysfs_set(struct led_classdev *led_cdev,
4820 enum led_brightness brightness)
4821{
4822 struct tpacpi_led_classdev *data =
4823 container_of(led_cdev,
4824 struct tpacpi_led_classdev,
4825 led_classdev);
75bd3bf2
HMH		 4826 data->new_state = (brightness != LED_OFF) ?
4827 TPACPI_LED_ON : TPACPI_LED_OFF;
e0e3c061 4828 queue_work(tpacpi_wq, &data->work);
e306501d
HMH		 4829}
4830
4831static enum led_brightness light_sysfs_get(struct led_classdev *led_cdev)
4832{
4833 return (light_get_status() == 1)? LED_FULL : LED_OFF;
4834}
4835
4836static struct tpacpi_led_classdev tpacpi_led_thinklight = {
4837 .led_classdev = {
4838 .name = "tpacpi::thinklight",
4839 .brightness_set = &light_sysfs_set,
4840 .brightness_get = &light_sysfs_get,
4841 }
4842};
4843
a5763f22 4844static int __init light_init(struct ibm_init_struct *iibm)
1da177e4 4845{
9c0a76e1 4846 int rc;
e306501d 4847
fe08bc4b
HMH		 4848 vdbg_printk(TPACPI_DBG_INIT, "initializing light subdriver\n");
4849
e28393c0
HMH		 4850 if (tpacpi_is_ibm()) {
4851 TPACPI_ACPIHANDLE_INIT(ledb);
4852 TPACPI_ACPIHANDLE_INIT(lght);
4853 }
e0c7dfe7 4854 TPACPI_ACPIHANDLE_INIT(cmos);
e306501d 4855 INIT_WORK(&tpacpi_led_thinklight.work, light_set_status_worker);
5fba344c 4856
78f81cc4 4857 /* light not supported on 570, 600e/x, 770e, 770x, G4x, R30, R31 */
d8fd94d9 4858 tp_features.light = (cmos_handle || lght_handle) && !ledb_handle;
78f81cc4 4859
d8fd94d9 4860 if (tp_features.light)
78f81cc4
BD		 4861 /* light status not supported on
4862 570, 600e/x, 770e, 770x, G4x, R30, R31, R32, X20 */
d8fd94d9
HMH		 4863 tp_features.light_status =
4864 acpi_evalf(ec_handle, NULL, "KBLT", "qv");
1da177e4 4865
9c0a76e1
HMH		 4866 vdbg_printk(TPACPI_DBG_INIT, "light is %s, light status is %s\n",
4867 str_supported(tp_features.light),
4868 str_supported(tp_features.light_status));
fe08bc4b 4869
9c0a76e1
HMH		 4870 if (!tp_features.light)
4871 return 1;
4872
4873 rc = led_classdev_register(&tpacpi_pdev->dev,
4874 &tpacpi_led_thinklight.led_classdev);
e306501d
HMH		 4875
4876 if (rc < 0) {
4877 tp_features.light = 0;
4878 tp_features.light_status = 0;
9c0a76e1
HMH		 4879 } else {
4880 rc = 0;
e306501d 4881 }
9c0a76e1 4882
e306501d
HMH		 4883 return rc;
4884}
4885
4886static void light_exit(void)
4887{
4888 led_classdev_unregister(&tpacpi_led_thinklight.led_classdev);
4889 if (work_pending(&tpacpi_led_thinklight.work))
e0e3c061 4890 flush_workqueue(tpacpi_wq);
1da177e4
LT		 4891}
4892
887965e6 4893static int light_read(struct seq_file *m)
1da177e4 4894{
4fa6811b 4895 int status;
1da177e4 4896
d8fd94d9 4897 if (!tp_features.light) {
887965e6 4898 seq_printf(m, "status:\t\tnot supported\n");
d8fd94d9 4899 } else if (!tp_features.light_status) {
887965e6
AD		 4900 seq_printf(m, "status:\t\tunknown\n");
4901 seq_printf(m, "commands:\ton, off\n");
78f81cc4 4902 } else {
4fa6811b
HMH		 4903 status = light_get_status();
4904 if (status < 0)
4905 return status;
887965e6
AD		 4906 seq_printf(m, "status:\t\t%s\n", onoff(status, 0));
4907 seq_printf(m, "commands:\ton, off\n");
78f81cc4 4908 }
1da177e4 4909
887965e6 4910 return 0;
1da177e4
LT		 4911}
4912
78f81cc4 4913static int light_write(char *buf)
1da177e4 4914{
1da177e4 4915 char *cmd;
4fa6811b 4916 int newstatus = 0;
78f81cc4 4917
d8fd94d9 4918 if (!tp_features.light)
78f81cc4
BD		 4919 return -ENODEV;
4920
1da177e4
LT		 4921 while ((cmd = next_cmd(&buf))) {
4922 if (strlencmp(cmd, "on") == 0) {
4fa6811b 4923 newstatus = 1;
1da177e4 4924 } else if (strlencmp(cmd, "off") == 0) {
4fa6811b 4925 newstatus = 0;
1da177e4
LT		 4926 } else
4927 return -EINVAL;
1da177e4
LT		 4928 }
4929
4fa6811b 4930 return light_set_status(newstatus);
1da177e4
LT		 4931}
4932
a5763f22
HMH		 4933static struct ibm_struct light_driver_data = {
4934 .name = "light",
4935 .read = light_read,
4936 .write = light_write,
e306501d 4937 .exit = light_exit,
a5763f22
HMH		 4938};
4939
56b6aeb0
HMH		 4940/*************************************************************************
4941 * CMOS subdriver
4942 */
4943
b616004c
HMH		 4944/* sysfs cmos_command -------------------------------------------------- */
4945static ssize_t cmos_command_store(struct device *dev,
4946 struct device_attribute *attr,
4947 const char *buf, size_t count)
4948{
4949 unsigned long cmos_cmd;
4950 int res;
4951
4952 if (parse_strtoul(buf, 21, &cmos_cmd))
4953 return -EINVAL;
4954
4955 res = issue_thinkpad_cmos_command(cmos_cmd);
4956 return (res)? res : count;
4957}
4958
4959static struct device_attribute dev_attr_cmos_command =
4960 __ATTR(cmos_command, S_IWUSR, NULL, cmos_command_store);
4961
4962/* --------------------------------------------------------------------- */
4963
a5763f22 4964static int __init cmos_init(struct ibm_init_struct *iibm)
5fba344c 4965{
b616004c
HMH		 4966 int res;
4967
fe08bc4b
HMH		 4968 vdbg_printk(TPACPI_DBG_INIT,
4969 "initializing cmos commands subdriver\n");
4970
e0c7dfe7 4971 TPACPI_ACPIHANDLE_INIT(cmos);
5fba344c 4972
fe08bc4b
HMH		 4973 vdbg_printk(TPACPI_DBG_INIT, "cmos commands are %s\n",
4974 str_supported(cmos_handle != NULL));
b616004c
HMH		 4975
4976 res = device_create_file(&tpacpi_pdev->dev, &dev_attr_cmos_command);
4977 if (res)
4978 return res;
4979
5fba344c
HMH		 4980 return (cmos_handle)? 0 : 1;
4981}
4982
b616004c
HMH		 4983static void cmos_exit(void)
4984{
4985 device_remove_file(&tpacpi_pdev->dev, &dev_attr_cmos_command);
4986}
4987
887965e6 4988static int cmos_read(struct seq_file *m)
1da177e4 4989{
78f81cc4
BD		 4990 /* cmos not supported on 570, 600e/x, 770e, 770x, A21e, A2xm/p,
4991 R30, R31, T20-22, X20-21 */
1da177e4 4992 if (!cmos_handle)
887965e6 4993 seq_printf(m, "status:\t\tnot supported\n");
1da177e4 4994 else {
887965e6
AD		 4995 seq_printf(m, "status:\t\tsupported\n");
4996 seq_printf(m, "commands:\t<cmd> (<cmd> is 0-21)\n");
1da177e4
LT		 4997 }
4998
887965e6 4999 return 0;
1da177e4
LT		 5000}
5001
78f81cc4 5002static int cmos_write(char *buf)
1da177e4
LT		 5003{
5004 char *cmd;
c9bea99c 5005 int cmos_cmd, res;
1da177e4
LT		 5006
5007 while ((cmd = next_cmd(&buf))) {
78f81cc4
BD		 5008 if (sscanf(cmd, "%u", &cmos_cmd) == 1 &&
5009 cmos_cmd >= 0 && cmos_cmd <= 21) {
1da177e4
LT		 5010 /* cmos_cmd set */
5011 } else
5012 return -EINVAL;
5013
c9bea99c
HMH		 5014 res = issue_thinkpad_cmos_command(cmos_cmd);
5015 if (res)
5016 return res;
1da177e4
LT		 5017 }
5018
5019 return 0;
78f81cc4
BD		 5020}
5021
a5763f22
HMH		 5022static struct ibm_struct cmos_driver_data = {
5023 .name = "cmos",
5024 .read = cmos_read,
5025 .write = cmos_write,
b616004c 5026 .exit = cmos_exit,
a5763f22 5027};
56b6aeb0
HMH		 5028
5029/*************************************************************************
5030 * LED subdriver
5031 */
5032
f74a27d4
HMH		 5033enum led_access_mode {
5034 TPACPI_LED_NONE = 0,
5035 TPACPI_LED_570, /* 570 */
5036 TPACPI_LED_OLD, /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20-21 */
5037 TPACPI_LED_NEW, /* all others */
5038};
5039
5040enum { /* For TPACPI_LED_OLD */
5041 TPACPI_LED_EC_HLCL = 0x0c, /* EC reg to get led to power on */
5042 TPACPI_LED_EC_HLBL = 0x0d, /* EC reg to blink a lit led */
5043 TPACPI_LED_EC_HLMS = 0x0e, /* EC reg to select led to command */
5044};
5045
9a8e1738 5046static enum led_access_mode led_supported;
78f81cc4 5047
2cbb5c8f 5048static acpi_handle led_handle;
56b6aeb0 5049
f21179a4 5050#define TPACPI_LED_NUMLEDS 16
af116101
HMH		 5051static struct tpacpi_led_classdev *tpacpi_leds;
5052static enum led_status_t tpacpi_led_state_cache[TPACPI_LED_NUMLEDS];
e3aa51fe 5053static const char * const tpacpi_led_names[TPACPI_LED_NUMLEDS] = {
af116101
HMH		 5054 /* there's a limit of 19 chars + NULL before 2.6.26 */
5055 "tpacpi::power",
5056 "tpacpi:orange:batt",
5057 "tpacpi:green:batt",
5058 "tpacpi::dock_active",
5059 "tpacpi::bay_active",
5060 "tpacpi::dock_batt",
5061 "tpacpi::unknown_led",
5062 "tpacpi::standby",
f21179a4
HMH		 5063 "tpacpi::dock_status1",
5064 "tpacpi::dock_status2",
5065 "tpacpi::unknown_led2",
5066 "tpacpi::unknown_led3",
5067 "tpacpi::thinkvantage",
af116101 5068};
f21179a4 5069#define TPACPI_SAFE_LEDS 0x1081U
a4d5effc
HMH		 5070
5071static inline bool tpacpi_is_led_restricted(const unsigned int led)
5072{
5073#ifdef CONFIG_THINKPAD_ACPI_UNSAFE_LEDS
5074 return false;
5075#else
f21179a4 5076 return (1U & (TPACPI_SAFE_LEDS >> led)) == 0;
a4d5effc
HMH		 5077#endif
5078}
af116101 5079
24e45bbe 5080static int led_get_status(const unsigned int led)
4fa6811b
HMH		 5081{
5082 int status;
af116101 5083 enum led_status_t led_s;
4fa6811b
HMH		 5084
5085 switch (led_supported) {
5086 case TPACPI_LED_570:
5087 if (!acpi_evalf(ec_handle,
5088 &status, "GLED", "dd", 1 << led))
5089 return -EIO;
af116101 5090 led_s = (status == 0)?
4fa6811b
HMH		 5091 TPACPI_LED_OFF :
5092 ((status == 1)?
5093 TPACPI_LED_ON :
5094 TPACPI_LED_BLINK);
af116101
HMH		 5095 tpacpi_led_state_cache[led] = led_s;
5096 return led_s;
4fa6811b
HMH		 5097 default:
5098 return -ENXIO;
5099 }
5100
5101 /* not reached */
5102}
5103
24e45bbe
HMH		 5104static int led_set_status(const unsigned int led,
5105 const enum led_status_t ledstatus)
4fa6811b
HMH		 5106{
5107 /* off, on, blink. Index is led_status_t */
24e45bbe
HMH		 5108 static const unsigned int led_sled_arg1[] = { 0, 1, 3 };
5109 static const unsigned int led_led_arg1[] = { 0, 0x80, 0xc0 };
4fa6811b
HMH		 5110
5111 int rc = 0;
5112
5113 switch (led_supported) {
5114 case TPACPI_LED_570:
24e45bbe 5115 /* 570 */
a4d5effc 5116 if (unlikely(led > 7))
24e45bbe 5117 return -EINVAL;
a4d5effc
HMH		 5118 if (unlikely(tpacpi_is_led_restricted(led)))
5119 return -EPERM;
24e45bbe
HMH		 5120 if (!acpi_evalf(led_handle, NULL, NULL, "vdd",
5121 (1 << led), led_sled_arg1[ledstatus]))
5122 rc = -EIO;
5123 break;
4fa6811b 5124 case TPACPI_LED_OLD:
24e45bbe 5125 /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20 */
a4d5effc 5126 if (unlikely(led > 7))
24e45bbe 5127 return -EINVAL;
a4d5effc
HMH		 5128 if (unlikely(tpacpi_is_led_restricted(led)))
5129 return -EPERM;
24e45bbe
HMH		 5130 rc = ec_write(TPACPI_LED_EC_HLMS, (1 << led));
5131 if (rc >= 0)
5132 rc = ec_write(TPACPI_LED_EC_HLBL,
5133 (ledstatus == TPACPI_LED_BLINK) << led);
5134 if (rc >= 0)
5135 rc = ec_write(TPACPI_LED_EC_HLCL,
5136 (ledstatus != TPACPI_LED_OFF) << led);
5137 break;
4fa6811b 5138 case TPACPI_LED_NEW:
24e45bbe 5139 /* all others */
a4d5effc
HMH		 5140 if (unlikely(led >= TPACPI_LED_NUMLEDS))
5141 return -EINVAL;
5142 if (unlikely(tpacpi_is_led_restricted(led)))
5143 return -EPERM;
24e45bbe
HMH		 5144 if (!acpi_evalf(led_handle, NULL, NULL, "vdd",
5145 led, led_led_arg1[ledstatus]))
5146 rc = -EIO;
5147 break;
4fa6811b
HMH		 5148 default:
5149 rc = -ENXIO;
5150 }
5151
af116101
HMH		 5152 if (!rc)
5153 tpacpi_led_state_cache[led] = ledstatus;
5154
5155 return rc;
5156}
5157
af116101
HMH		 5158static void led_set_status_worker(struct work_struct *work)
5159{
5160 struct tpacpi_led_classdev *data =
5161 container_of(work, struct tpacpi_led_classdev, work);
5162
5163 if (likely(tpacpi_lifecycle == TPACPI_LIFE_RUNNING))
75bd3bf2 5164 led_set_status(data->led, data->new_state);
af116101
HMH		 5165}
5166
5167static void led_sysfs_set(struct led_classdev *led_cdev,
5168 enum led_brightness brightness)
5169{
5170 struct tpacpi_led_classdev *data = container_of(led_cdev,
5171 struct tpacpi_led_classdev, led_classdev);
5172
75bd3bf2
HMH		 5173 if (brightness == LED_OFF)
5174 data->new_state = TPACPI_LED_OFF;
5175 else if (tpacpi_led_state_cache[data->led] != TPACPI_LED_BLINK)
5176 data->new_state = TPACPI_LED_ON;
5177 else
5178 data->new_state = TPACPI_LED_BLINK;
5179
e0e3c061 5180 queue_work(tpacpi_wq, &data->work);
af116101
HMH		 5181}
5182
5183static int led_sysfs_blink_set(struct led_classdev *led_cdev,
5184 unsigned long *delay_on, unsigned long *delay_off)
5185{
5186 struct tpacpi_led_classdev *data = container_of(led_cdev,
5187 struct tpacpi_led_classdev, led_classdev);
5188
5189 /* Can we choose the flash rate? */
5190 if (*delay_on == 0 && *delay_off == 0) {
5191 /* yes. set them to the hardware blink rate (1 Hz) */
5192 *delay_on = 500; /* ms */
5193 *delay_off = 500; /* ms */
5194 } else if ((*delay_on != 500) || (*delay_off != 500))
5195 return -EINVAL;
5196
75bd3bf2 5197 data->new_state = TPACPI_LED_BLINK;
e0e3c061 5198 queue_work(tpacpi_wq, &data->work);
af116101
HMH		 5199
5200 return 0;
5201}
5202
5203static enum led_brightness led_sysfs_get(struct led_classdev *led_cdev)
5204{
5205 int rc;
5206
5207 struct tpacpi_led_classdev *data = container_of(led_cdev,
5208 struct tpacpi_led_classdev, led_classdev);
5209
5210 rc = led_get_status(data->led);
5211
5212 if (rc == TPACPI_LED_OFF || rc < 0)
5213 rc = LED_OFF; /* no error handling in led class :( */
5214 else
5215 rc = LED_FULL;
5216
4fa6811b
HMH		 5217 return rc;
5218}
5219
af116101
HMH		 5220static void led_exit(void)
5221{
5222 unsigned int i;
5223
5224 for (i = 0; i < TPACPI_LED_NUMLEDS; i++) {
5225 if (tpacpi_leds[i].led_classdev.name)
5226 led_classdev_unregister(&tpacpi_leds[i].led_classdev);
5227 }
5228
5229 kfree(tpacpi_leds);
af116101
HMH		 5230}
5231
a4d5effc
HMH		 5232static int __init tpacpi_init_led(unsigned int led)
5233{
5234 int rc;
5235
5236 tpacpi_leds[led].led = led;
5237
f21179a4
HMH		 5238 /* LEDs with no name don't get registered */
5239 if (!tpacpi_led_names[led])
5240 return 0;
5241
a4d5effc
HMH		 5242 tpacpi_leds[led].led_classdev.brightness_set = &led_sysfs_set;
5243 tpacpi_leds[led].led_classdev.blink_set = &led_sysfs_blink_set;
5244 if (led_supported == TPACPI_LED_570)
5245 tpacpi_leds[led].led_classdev.brightness_get =
5246 &led_sysfs_get;
5247
5248 tpacpi_leds[led].led_classdev.name = tpacpi_led_names[led];
5249
5250 INIT_WORK(&tpacpi_leds[led].work, led_set_status_worker);
5251
5252 rc = led_classdev_register(&tpacpi_pdev->dev,
5253 &tpacpi_leds[led].led_classdev);
5254 if (rc < 0)
5255 tpacpi_leds[led].led_classdev.name = NULL;
5256
5257 return rc;
5258}
5259
f21179a4
HMH		 5260static const struct tpacpi_quirk led_useful_qtable[] __initconst = {
5261 TPACPI_Q_IBM('1', 'E', 0x009f), /* A30 */
5262 TPACPI_Q_IBM('1', 'N', 0x009f), /* A31 */
5263 TPACPI_Q_IBM('1', 'G', 0x009f), /* A31 */
5264
5265 TPACPI_Q_IBM('1', 'I', 0x0097), /* T30 */
5266 TPACPI_Q_IBM('1', 'R', 0x0097), /* T40, T41, T42, R50, R51 */
5267 TPACPI_Q_IBM('7', '0', 0x0097), /* T43, R52 */
5268 TPACPI_Q_IBM('1', 'Y', 0x0097), /* T43 */
5269 TPACPI_Q_IBM('1', 'W', 0x0097), /* R50e */
5270 TPACPI_Q_IBM('1', 'V', 0x0097), /* R51 */
5271 TPACPI_Q_IBM('7', '8', 0x0097), /* R51e */
5272 TPACPI_Q_IBM('7', '6', 0x0097), /* R52 */
5273
5274 TPACPI_Q_IBM('1', 'K', 0x00bf), /* X30 */
5275 TPACPI_Q_IBM('1', 'Q', 0x00bf), /* X31, X32 */
5276 TPACPI_Q_IBM('1', 'U', 0x00bf), /* X40 */
5277 TPACPI_Q_IBM('7', '4', 0x00bf), /* X41 */
5278 TPACPI_Q_IBM('7', '5', 0x00bf), /* X41t */
5279
5280 TPACPI_Q_IBM('7', '9', 0x1f97), /* T60 (1) */
5281 TPACPI_Q_IBM('7', '7', 0x1f97), /* Z60* (1) */
5282 TPACPI_Q_IBM('7', 'F', 0x1f97), /* Z61* (1) */
5283 TPACPI_Q_IBM('7', 'B', 0x1fb7), /* X60 (1) */
5284
5285 /* (1) - may have excess leds enabled on MSB */
5286
5287 /* Defaults (order matters, keep last, don't reorder!) */
5288 { /* Lenovo */
5289 .vendor = PCI_VENDOR_ID_LENOVO,
5290 .bios = TPACPI_MATCH_ANY, .ec = TPACPI_MATCH_ANY,
5291 .quirks = 0x1fffU,
5292 },
5293 { /* IBM ThinkPads with no EC version string */
5294 .vendor = PCI_VENDOR_ID_IBM,
5295 .bios = TPACPI_MATCH_ANY, .ec = TPACPI_MATCH_UNKNOWN,
5296 .quirks = 0x00ffU,
5297 },
5298 { /* IBM ThinkPads with EC version string */
5299 .vendor = PCI_VENDOR_ID_IBM,
5300 .bios = TPACPI_MATCH_ANY, .ec = TPACPI_MATCH_ANY,
5301 .quirks = 0x00bfU,
5302 },
5303};
5304
5305#undef TPACPI_LEDQ_IBM
5306#undef TPACPI_LEDQ_LNV
5307
2cbb5c8f
HMH		 5308static enum led_access_mode __init led_init_detect_mode(void)
5309{
5310 acpi_status status;
5311
5312 if (tpacpi_is_ibm()) {
5313 /* 570 */
5314 status = acpi_get_handle(ec_handle, "SLED", &led_handle);
5315 if (ACPI_SUCCESS(status))
5316 return TPACPI_LED_570;
5317
5318 /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20-21 */
5319 status = acpi_get_handle(ec_handle, "SYSL", &led_handle);
5320 if (ACPI_SUCCESS(status))
5321 return TPACPI_LED_OLD;
5322 }
5323
5324 /* most others */
5325 status = acpi_get_handle(ec_handle, "LED", &led_handle);
5326 if (ACPI_SUCCESS(status))
5327 return TPACPI_LED_NEW;
5328
5329 /* R30, R31, and unknown firmwares */
5330 led_handle = NULL;
5331 return TPACPI_LED_NONE;
5332}
5333
a5763f22 5334static int __init led_init(struct ibm_init_struct *iibm)
78f81cc4 5335{
af116101
HMH		 5336 unsigned int i;
5337 int rc;
f21179a4 5338 unsigned long useful_leds;
af116101 5339
fe08bc4b
HMH		 5340 vdbg_printk(TPACPI_DBG_INIT, "initializing LED subdriver\n");
5341
2cbb5c8f 5342 led_supported = led_init_detect_mode();
78f81cc4 5343
fe08bc4b
HMH		 5344 vdbg_printk(TPACPI_DBG_INIT, "LED commands are %s, mode %d\n",
5345 str_supported(led_supported), led_supported);
5346
f21179a4
HMH		 5347 if (led_supported == TPACPI_LED_NONE)
5348 return 1;
5349
af116101
HMH		 5350 tpacpi_leds = kzalloc(sizeof(*tpacpi_leds) * TPACPI_LED_NUMLEDS,
5351 GFP_KERNEL);
5352 if (!tpacpi_leds) {
5353 printk(TPACPI_ERR "Out of memory for LED data\n");
5354 return -ENOMEM;
5355 }
5356
f21179a4
HMH		 5357 useful_leds = tpacpi_check_quirks(led_useful_qtable,
5358 ARRAY_SIZE(led_useful_qtable));
5359
af116101 5360 for (i = 0; i < TPACPI_LED_NUMLEDS; i++) {
f21179a4
HMH		 5361 if (!tpacpi_is_led_restricted(i) &&
5362 test_bit(i, &useful_leds)) {
a4d5effc
HMH		 5363 rc = tpacpi_init_led(i);
5364 if (rc < 0) {
5365 led_exit();
5366 return rc;
5367 }
af116101
HMH		 5368 }
5369 }
5370
a4d5effc 5371#ifdef CONFIG_THINKPAD_ACPI_UNSAFE_LEDS
f21179a4
HMH		 5372 printk(TPACPI_NOTICE
5373 "warning: userspace override of important "
5374 "firmware LEDs is enabled\n");
a4d5effc 5375#endif
f21179a4 5376 return 0;
78f81cc4
BD		 5377}
5378
4fa6811b
HMH		 5379#define str_led_status(s) \
5380 ((s) == TPACPI_LED_OFF ? "off" : \
5381 ((s) == TPACPI_LED_ON ? "on" : "blinking"))
78f81cc4 5382
887965e6 5383static int led_read(struct seq_file *m)
1da177e4 5384{
78f81cc4 5385 if (!led_supported) {
887965e6
AD		 5386 seq_printf(m, "status:\t\tnot supported\n");
5387 return 0;
78f81cc4 5388 }
887965e6 5389 seq_printf(m, "status:\t\tsupported\n");
78f81cc4 5390
efa27145 5391 if (led_supported == TPACPI_LED_570) {
78f81cc4
BD		 5392 /* 570 */
5393 int i, status;
5394 for (i = 0; i < 8; i++) {
4fa6811b
HMH		 5395 status = led_get_status(i);
5396 if (status < 0)
78f81cc4 5397 return -EIO;
887965e6 5398 seq_printf(m, "%d:\t\t%s\n",
4fa6811b 5399 i, str_led_status(status));
78f81cc4
BD		 5400 }
5401 }
5402
887965e6 5403 seq_printf(m, "commands:\t"
f21179a4 5404 "<led> on, <led> off, <led> blink (<led> is 0-15)\n");
1da177e4 5405
887965e6 5406 return 0;
1da177e4
LT		 5407}
5408
78f81cc4 5409static int led_write(char *buf)
1da177e4
LT		 5410{
5411 char *cmd;
4fa6811b
HMH		 5412 int led, rc;
5413 enum led_status_t s;
78f81cc4
BD		 5414
5415 if (!led_supported)
5416 return -ENODEV;
1da177e4
LT		 5417
5418 while ((cmd = next_cmd(&buf))) {
f21179a4 5419 if (sscanf(cmd, "%d", &led) != 1 || led < 0 || led > 15)
1da177e4
LT		 5420 return -EINVAL;
5421
78f81cc4 5422 if (strstr(cmd, "off")) {
4fa6811b 5423 s = TPACPI_LED_OFF;
1da177e4 5424 } else if (strstr(cmd, "on")) {
4fa6811b 5425 s = TPACPI_LED_ON;
78f81cc4 5426 } else if (strstr(cmd, "blink")) {
4fa6811b 5427 s = TPACPI_LED_BLINK;
78f81cc4 5428 } else {
4fa6811b 5429 return -EINVAL;
78f81cc4 5430 }
4fa6811b
HMH		 5431
5432 rc = led_set_status(led, s);
5433 if (rc < 0)
5434 return rc;
78f81cc4
BD		 5435 }
5436
5437 return 0;
5438}
5439
a5763f22
HMH		 5440static struct ibm_struct led_driver_data = {
5441 .name = "led",
5442 .read = led_read,
5443 .write = led_write,
af116101 5444 .exit = led_exit,
a5763f22
HMH		 5445};
5446
56b6aeb0
HMH		 5447/*************************************************************************
5448 * Beep subdriver
5449 */
5450
e0c7dfe7 5451TPACPI_HANDLE(beep, ec, "BEEP"); /* all except R30, R31 */
56b6aeb0 5452
60201732
HMH		 5453#define TPACPI_BEEP_Q1 0x0001
5454
5455static const struct tpacpi_quirk beep_quirk_table[] __initconst = {
5456 TPACPI_Q_IBM('I', 'M', TPACPI_BEEP_Q1), /* 570 */
5457 TPACPI_Q_IBM('I', 'U', TPACPI_BEEP_Q1), /* 570E - unverified */
5458};
5459
a5763f22 5460static int __init beep_init(struct ibm_init_struct *iibm)
5fba344c 5461{
60201732
HMH		 5462 unsigned long quirks;
5463
fe08bc4b
HMH		 5464 vdbg_printk(TPACPI_DBG_INIT, "initializing beep subdriver\n");
5465
e0c7dfe7 5466 TPACPI_ACPIHANDLE_INIT(beep);
5fba344c 5467
fe08bc4b
HMH		 5468 vdbg_printk(TPACPI_DBG_INIT, "beep is %s\n",
5469 str_supported(beep_handle != NULL));
5470
60201732
HMH		 5471 quirks = tpacpi_check_quirks(beep_quirk_table,
5472 ARRAY_SIZE(beep_quirk_table));
5473
5474 tp_features.beep_needs_two_args = !!(quirks & TPACPI_BEEP_Q1);
5475
5fba344c
HMH		 5476 return (beep_handle)? 0 : 1;
5477}
5478
887965e6 5479static int beep_read(struct seq_file *m)
78f81cc4 5480{
78f81cc4 5481 if (!beep_handle)
887965e6 5482 seq_printf(m, "status:\t\tnot supported\n");
78f81cc4 5483 else {
887965e6
AD		 5484 seq_printf(m, "status:\t\tsupported\n");
5485 seq_printf(m, "commands:\t<cmd> (<cmd> is 0-17)\n");
78f81cc4
BD		 5486 }
5487
887965e6 5488 return 0;
78f81cc4
BD		 5489}
5490
5491static int beep_write(char *buf)
5492{
5493 char *cmd;
5494 int beep_cmd;
5495
5496 if (!beep_handle)
5497 return -ENODEV;
5498
5499 while ((cmd = next_cmd(&buf))) {
5500 if (sscanf(cmd, "%u", &beep_cmd) == 1 &&
5501 beep_cmd >= 0 && beep_cmd <= 17) {
5502 /* beep_cmd set */
5503 } else
5504 return -EINVAL;
60201732
HMH		 5505 if (tp_features.beep_needs_two_args) {
5506 if (!acpi_evalf(beep_handle, NULL, NULL, "vdd",
5507 beep_cmd, 0))
5508 return -EIO;
5509 } else {
5510 if (!acpi_evalf(beep_handle, NULL, NULL, "vd",
5511 beep_cmd))
5512 return -EIO;
5513 }
78f81cc4
BD		 5514 }
5515
5516 return 0;
5517}
5518
a5763f22
HMH		 5519static struct ibm_struct beep_driver_data = {
5520 .name = "beep",
5521 .read = beep_read,
5522 .write = beep_write,
5523};
5524
56b6aeb0
HMH		 5525/*************************************************************************
5526 * Thermal subdriver
5527 */
78f81cc4 5528
f74a27d4
HMH		 5529enum thermal_access_mode {
5530 TPACPI_THERMAL_NONE = 0, /* No thermal support */
5531 TPACPI_THERMAL_ACPI_TMP07, /* Use ACPI TMP0-7 */
5532 TPACPI_THERMAL_ACPI_UPDT, /* Use ACPI TMP0-7 with UPDT */
5533 TPACPI_THERMAL_TPEC_8, /* Use ACPI EC regs, 8 sensors */
5534 TPACPI_THERMAL_TPEC_16, /* Use ACPI EC regs, 16 sensors */
5535};
5536
5537enum { /* TPACPI_THERMAL_TPEC_* */
5538 TP_EC_THERMAL_TMP0 = 0x78, /* ACPI EC regs TMP 0..7 */
5539 TP_EC_THERMAL_TMP8 = 0xC0, /* ACPI EC regs TMP 8..15 */
5540 TP_EC_THERMAL_TMP_NA = -128, /* ACPI EC sensor not available */
9ebd9e83
HMH		 5541
5542 TPACPI_THERMAL_SENSOR_NA = -128000, /* Sensor not available */
f74a27d4
HMH		 5543};
5544
9ebd9e83 5545
f74a27d4
HMH		 5546#define TPACPI_MAX_THERMAL_SENSORS 16 /* Max thermal sensors supported */
5547struct ibm_thermal_sensors_struct {
5548 s32 temp[TPACPI_MAX_THERMAL_SENSORS];
5549};
5550
a26f878a 5551static enum thermal_access_mode thermal_read_mode;
78f81cc4 5552
b21a15f6
HMH		 5553/* idx is zero-based */
5554static int thermal_get_sensor(int idx, s32 *value)
5555{
5556 int t;
5557 s8 tmp;
5558 char tmpi[5];
5559
5560 t = TP_EC_THERMAL_TMP0;
5561
5562 switch (thermal_read_mode) {
5563#if TPACPI_MAX_THERMAL_SENSORS >= 16
5564 case TPACPI_THERMAL_TPEC_16:
5565 if (idx >= 8 && idx <= 15) {
5566 t = TP_EC_THERMAL_TMP8;
5567 idx -= 8;
5568 }
5569 /* fallthrough */
5570#endif
5571 case TPACPI_THERMAL_TPEC_8:
5572 if (idx <= 7) {
5573 if (!acpi_ec_read(t + idx, &tmp))
5574 return -EIO;
5575 *value = tmp * 1000;
5576 return 0;
5577 }
5578 break;
5579
5580 case TPACPI_THERMAL_ACPI_UPDT:
5581 if (idx <= 7) {
5582 snprintf(tmpi, sizeof(tmpi), "TMP%c", '0' + idx);
5583 if (!acpi_evalf(ec_handle, NULL, "UPDT", "v"))
5584 return -EIO;
5585 if (!acpi_evalf(ec_handle, &t, tmpi, "d"))
5586 return -EIO;
5587 *value = (t - 2732) * 100;
5588 return 0;
5589 }
5590 break;
5591
5592 case TPACPI_THERMAL_ACPI_TMP07:
5593 if (idx <= 7) {
5594 snprintf(tmpi, sizeof(tmpi), "TMP%c", '0' + idx);
5595 if (!acpi_evalf(ec_handle, &t, tmpi, "d"))
5596 return -EIO;
5597 if (t > 127 || t < -127)
5598 t = TP_EC_THERMAL_TMP_NA;
5599 *value = t * 1000;
5600 return 0;
5601 }
5602 break;
5603
5604 case TPACPI_THERMAL_NONE:
5605 default:
5606 return -ENOSYS;
5607 }
5608
5609 return -EINVAL;
5610}
5611
5612static int thermal_get_sensors(struct ibm_thermal_sensors_struct *s)
5613{
5614 int res, i;
5615 int n;
5616
5617 n = 8;
5618 i = 0;
5619
5620 if (!s)
5621 return -EINVAL;
5622
5623 if (thermal_read_mode == TPACPI_THERMAL_TPEC_16)
5624 n = 16;
5625
35ff8b9f 5626 for (i = 0 ; i < n; i++) {
b21a15f6
HMH		 5627 res = thermal_get_sensor(i, &s->temp[i]);
5628 if (res)
5629 return res;
5630 }
5631
5632 return n;
5633}
f74a27d4 5634
9ebd9e83
HMH		 5635static void thermal_dump_all_sensors(void)
5636{
5637 int n, i;
5638 struct ibm_thermal_sensors_struct t;
5639
5640 n = thermal_get_sensors(&t);
5641 if (n <= 0)
5642 return;
5643
5644 printk(TPACPI_NOTICE
5645 "temperatures (Celsius):");
5646
5647 for (i = 0; i < n; i++) {
5648 if (t.temp[i] != TPACPI_THERMAL_SENSOR_NA)
5649 printk(KERN_CONT " %d", (int)(t.temp[i] / 1000));
5650 else
5651 printk(KERN_CONT " N/A");
5652 }
5653
5654 printk(KERN_CONT "\n");
5655}
5656
2c37aa4e
HMH		 5657/* sysfs temp##_input -------------------------------------------------- */
5658
5659static ssize_t thermal_temp_input_show(struct device *dev,
5660 struct device_attribute *attr,
5661 char *buf)
5662{
5663 struct sensor_device_attribute *sensor_attr =
5664 to_sensor_dev_attr(attr);
5665 int idx = sensor_attr->index;
5666 s32 value;
5667 int res;
5668
5669 res = thermal_get_sensor(idx, &value);
5670 if (res)
5671 return res;
9ebd9e83 5672 if (value == TPACPI_THERMAL_SENSOR_NA)
2c37aa4e
HMH		 5673 return -ENXIO;
5674
5675 return snprintf(buf, PAGE_SIZE, "%d\n", value);
5676}
5677
5678#define THERMAL_SENSOR_ATTR_TEMP(_idxA, _idxB) \
35ff8b9f
HMH		 5679 SENSOR_ATTR(temp##_idxA##_input, S_IRUGO, \
5680 thermal_temp_input_show, NULL, _idxB)
2c37aa4e
HMH		 5681
5682static struct sensor_device_attribute sensor_dev_attr_thermal_temp_input[] = {
5683 THERMAL_SENSOR_ATTR_TEMP(1, 0),
5684 THERMAL_SENSOR_ATTR_TEMP(2, 1),
5685 THERMAL_SENSOR_ATTR_TEMP(3, 2),
5686 THERMAL_SENSOR_ATTR_TEMP(4, 3),
5687 THERMAL_SENSOR_ATTR_TEMP(5, 4),
5688 THERMAL_SENSOR_ATTR_TEMP(6, 5),
5689 THERMAL_SENSOR_ATTR_TEMP(7, 6),
5690 THERMAL_SENSOR_ATTR_TEMP(8, 7),
5691 THERMAL_SENSOR_ATTR_TEMP(9, 8),
5692 THERMAL_SENSOR_ATTR_TEMP(10, 9),
5693 THERMAL_SENSOR_ATTR_TEMP(11, 10),
5694 THERMAL_SENSOR_ATTR_TEMP(12, 11),
5695 THERMAL_SENSOR_ATTR_TEMP(13, 12),
5696 THERMAL_SENSOR_ATTR_TEMP(14, 13),
5697 THERMAL_SENSOR_ATTR_TEMP(15, 14),
5698 THERMAL_SENSOR_ATTR_TEMP(16, 15),
5699};
5700
5701#define THERMAL_ATTRS(X) \
5702 &sensor_dev_attr_thermal_temp_input[X].dev_attr.attr
5703
5704static struct attribute *thermal_temp_input_attr[] = {
5705 THERMAL_ATTRS(8),
5706 THERMAL_ATTRS(9),
5707 THERMAL_ATTRS(10),
5708 THERMAL_ATTRS(11),
5709 THERMAL_ATTRS(12),
5710 THERMAL_ATTRS(13),
5711 THERMAL_ATTRS(14),
5712 THERMAL_ATTRS(15),
5713 THERMAL_ATTRS(0),
5714 THERMAL_ATTRS(1),
5715 THERMAL_ATTRS(2),
5716 THERMAL_ATTRS(3),
5717 THERMAL_ATTRS(4),
5718 THERMAL_ATTRS(5),
5719 THERMAL_ATTRS(6),
5720 THERMAL_ATTRS(7),
5721 NULL
5722};
5723
5724static const struct attribute_group thermal_temp_input16_group = {
5725 .attrs = thermal_temp_input_attr
5726};
5727
5728static const struct attribute_group thermal_temp_input8_group = {
5729 .attrs = &thermal_temp_input_attr[8]
5730};
5731
5732#undef THERMAL_SENSOR_ATTR_TEMP
5733#undef THERMAL_ATTRS
5734
5735/* --------------------------------------------------------------------- */
5736
a5763f22 5737static int __init thermal_init(struct ibm_init_struct *iibm)
78f81cc4 5738{
60eb0b35
HMH		 5739 u8 t, ta1, ta2;
5740 int i;
5fba344c 5741 int acpi_tmp7;
2c37aa4e 5742 int res;
5fba344c 5743
fe08bc4b
HMH		 5744 vdbg_printk(TPACPI_DBG_INIT, "initializing thermal subdriver\n");
5745
5fba344c 5746 acpi_tmp7 = acpi_evalf(ec_handle, NULL, "TMP7", "qv");
60eb0b35 5747
3d6f99ca 5748 if (thinkpad_id.ec_model) {
60eb0b35
HMH		 5749 /*
5750 * Direct EC access mode: sensors at registers
5751 * 0x78-0x7F, 0xC0-0xC7. Registers return 0x00 for
5752 * non-implemented, thermal sensors return 0x80 when
5753 * not available
5754 */
78f81cc4 5755
60eb0b35
HMH		 5756 ta1 = ta2 = 0;
5757 for (i = 0; i < 8; i++) {
04cc862c 5758 if (acpi_ec_read(TP_EC_THERMAL_TMP0 + i, &t)) {
60eb0b35
HMH		 5759 ta1 |= t;
5760 } else {
5761 ta1 = 0;
5762 break;
5763 }
04cc862c 5764 if (acpi_ec_read(TP_EC_THERMAL_TMP8 + i, &t)) {
60eb0b35
HMH		 5765 ta2 |= t;
5766 } else {
5767 ta1 = 0;
5768 break;
5769 }
5770 }
5771 if (ta1 == 0) {
5772 /* This is sheer paranoia, but we handle it anyway */
5773 if (acpi_tmp7) {
e0c7dfe7 5774 printk(TPACPI_ERR
60eb0b35 5775 "ThinkPad ACPI EC access misbehaving, "
35ff8b9f
HMH		 5776 "falling back to ACPI TMPx access "
5777 "mode\n");
efa27145 5778 thermal_read_mode = TPACPI_THERMAL_ACPI_TMP07;
60eb0b35 5779 } else {
e0c7dfe7 5780 printk(TPACPI_ERR
60eb0b35
HMH		 5781 "ThinkPad ACPI EC access misbehaving, "
5782 "disabling thermal sensors access\n");
efa27145 5783 thermal_read_mode = TPACPI_THERMAL_NONE;
60eb0b35
HMH		 5784 }
5785 } else {
5786 thermal_read_mode =
5787 (ta2 != 0) ?
efa27145 5788 TPACPI_THERMAL_TPEC_16 : TPACPI_THERMAL_TPEC_8;
60eb0b35
HMH		 5789 }
5790 } else if (acpi_tmp7) {
e28393c0
HMH		 5791 if (tpacpi_is_ibm() &&
5792 acpi_evalf(ec_handle, NULL, "UPDT", "qv")) {
a26f878a 5793 /* 600e/x, 770e, 770x */
efa27145 5794 thermal_read_mode = TPACPI_THERMAL_ACPI_UPDT;
a26f878a 5795 } else {
e28393c0 5796 /* IBM/LENOVO DSDT EC.TMPx access, max 8 sensors */
efa27145 5797 thermal_read_mode = TPACPI_THERMAL_ACPI_TMP07;
a26f878a
HMH		 5798 }
5799 } else {
5800 /* temperatures not supported on 570, G4x, R30, R31, R32 */
efa27145 5801 thermal_read_mode = TPACPI_THERMAL_NONE;
a26f878a 5802 }
78f81cc4 5803
fe08bc4b
HMH		 5804 vdbg_printk(TPACPI_DBG_INIT, "thermal is %s, mode %d\n",
5805 str_supported(thermal_read_mode != TPACPI_THERMAL_NONE),
5806 thermal_read_mode);
5807
35ff8b9f 5808 switch (thermal_read_mode) {
2c37aa4e 5809 case TPACPI_THERMAL_TPEC_16:
7fd40029 5810 res = sysfs_create_group(&tpacpi_sensors_pdev->dev.kobj,
2c37aa4e
HMH		 5811 &thermal_temp_input16_group);
5812 if (res)
5813 return res;
5814 break;
5815 case TPACPI_THERMAL_TPEC_8:
5816 case TPACPI_THERMAL_ACPI_TMP07:
5817 case TPACPI_THERMAL_ACPI_UPDT:
7fd40029 5818 res = sysfs_create_group(&tpacpi_sensors_pdev->dev.kobj,
2c37aa4e
HMH		 5819 &thermal_temp_input8_group);
5820 if (res)
5821 return res;
5822 break;
5823 case TPACPI_THERMAL_NONE:
5824 default:
5825 return 1;
5826 }
5827
5828 return 0;
5829}
5830
5831static void thermal_exit(void)
5832{
35ff8b9f 5833 switch (thermal_read_mode) {
2c37aa4e 5834 case TPACPI_THERMAL_TPEC_16:
7fd40029 5835 sysfs_remove_group(&tpacpi_sensors_pdev->dev.kobj,
2c37aa4e
HMH		 5836 &thermal_temp_input16_group);
5837 break;
5838 case TPACPI_THERMAL_TPEC_8:
5839 case TPACPI_THERMAL_ACPI_TMP07:
5840 case TPACPI_THERMAL_ACPI_UPDT:
7fd40029 5841 sysfs_remove_group(&tpacpi_sensors_pdev->dev.kobj,
f04d5e01 5842 &thermal_temp_input8_group);
2c37aa4e
HMH		 5843 break;
5844 case TPACPI_THERMAL_NONE:
5845 default:
5846 break;
5847 }
78f81cc4
BD		 5848}
5849
887965e6 5850static int thermal_read(struct seq_file *m)
a26f878a 5851{
a26f878a
HMH		 5852 int n, i;
5853 struct ibm_thermal_sensors_struct t;
5854
5855 n = thermal_get_sensors(&t);
5856 if (unlikely(n < 0))
5857 return n;
5858
887965e6 5859 seq_printf(m, "temperatures:\t");
a26f878a
HMH		 5860
5861 if (n > 0) {
5862 for (i = 0; i < (n - 1); i++)
887965e6
AD		 5863 seq_printf(m, "%d ", t.temp[i] / 1000);
5864 seq_printf(m, "%d\n", t.temp[i] / 1000);
a26f878a 5865 } else
887965e6 5866 seq_printf(m, "not supported\n");
78f81cc4 5867
887965e6 5868 return 0;
78f81cc4
BD		 5869}
5870
a5763f22
HMH		 5871static struct ibm_struct thermal_driver_data = {
5872 .name = "thermal",
5873 .read = thermal_read,
2c37aa4e 5874 .exit = thermal_exit,
a5763f22
HMH		 5875};
5876
56b6aeb0
HMH		 5877/*************************************************************************
5878 * Backlight/brightness subdriver
5879 */
5880
f74a27d4
HMH		 5881#define TPACPI_BACKLIGHT_DEV_NAME "thinkpad_screen"
5882
0e501834
HMH		 5883/*
5884 * ThinkPads can read brightness from two places: EC HBRV (0x31), or
5885 * CMOS NVRAM byte 0x5E, bits 0-3.
5886 *
5887 * EC HBRV (0x31) has the following layout
5888 * Bit 7: unknown function
5889 * Bit 6: unknown function
5890 * Bit 5: Z: honour scale changes, NZ: ignore scale changes
5891 * Bit 4: must be set to zero to avoid problems
5892 * Bit 3-0: backlight brightness level
5893 *
5894 * brightness_get_raw returns status data in the HBRV layout
d7880f10
HMH		 5895 *
5896 * WARNING: The X61 has been verified to use HBRV for something else, so
5897 * this should be used _only_ on IBM ThinkPads, and maybe with some careful
5898 * testing on the very early *60 Lenovo models...
0e501834
HMH		 5899 */
5900
e11aecf1
HMH		 5901enum {
5902 TP_EC_BACKLIGHT = 0x31,
5903
5904 /* TP_EC_BACKLIGHT bitmasks */
5905 TP_EC_BACKLIGHT_LVLMSK = 0x1F,
5906 TP_EC_BACKLIGHT_CMDMSK = 0xE0,
5907 TP_EC_BACKLIGHT_MAPSW = 0x20,
5908};
5909
0e501834
HMH		 5910enum tpacpi_brightness_access_mode {
5911 TPACPI_BRGHT_MODE_AUTO = 0, /* Not implemented yet */
5912 TPACPI_BRGHT_MODE_EC, /* EC control */
5913 TPACPI_BRGHT_MODE_UCMS_STEP, /* UCMS step-based control */
5914 TPACPI_BRGHT_MODE_ECNVRAM, /* EC control w/ NVRAM store */
5915 TPACPI_BRGHT_MODE_MAX
5916};
5917
94954cc6 5918static struct backlight_device *ibm_backlight_device;
0e501834
HMH		 5919
5920static enum tpacpi_brightness_access_mode brightness_mode =
5921 TPACPI_BRGHT_MODE_MAX;
5922
f74a27d4
HMH		 5923static unsigned int brightness_enable = 2; /* 2 = auto, 0 = no, 1 = yes */
5924
b21a15f6 5925static struct mutex brightness_mutex;
56b6aeb0 5926
0e501834
HMH		 5927/* NVRAM brightness access,
5928 * call with brightness_mutex held! */
5929static unsigned int tpacpi_brightness_nvram_get(void)
b21a15f6 5930{
0e501834 5931 u8 lnvram;
b21a15f6 5932
0e501834
HMH		 5933 lnvram = (nvram_read_byte(TP_NVRAM_ADDR_BRIGHTNESS)
5934 & TP_NVRAM_MASK_LEVEL_BRIGHTNESS)
5935 >> TP_NVRAM_POS_LEVEL_BRIGHTNESS;
77775838 5936 lnvram &= bright_maxlvl;
0e501834
HMH		 5937
5938 return lnvram;
5939}
5940
5941static void tpacpi_brightness_checkpoint_nvram(void)
5942{
5943 u8 lec = 0;
5944 u8 b_nvram;
5945
5946 if (brightness_mode != TPACPI_BRGHT_MODE_ECNVRAM)
5947 return;
5948
5949 vdbg_printk(TPACPI_DBG_BRGHT,
5950 "trying to checkpoint backlight level to NVRAM...\n");
5951
5952 if (mutex_lock_killable(&brightness_mutex) < 0)
5953 return;
5954
5955 if (unlikely(!acpi_ec_read(TP_EC_BACKLIGHT, &lec)))
5956 goto unlock;
5957 lec &= TP_EC_BACKLIGHT_LVLMSK;
5958 b_nvram = nvram_read_byte(TP_NVRAM_ADDR_BRIGHTNESS);
5959
5960 if (lec != ((b_nvram & TP_NVRAM_MASK_LEVEL_BRIGHTNESS)
5961 >> TP_NVRAM_POS_LEVEL_BRIGHTNESS)) {
5962 /* NVRAM needs update */
5963 b_nvram &= ~(TP_NVRAM_MASK_LEVEL_BRIGHTNESS <<
5964 TP_NVRAM_POS_LEVEL_BRIGHTNESS);
5965 b_nvram |= lec;
5966 nvram_write_byte(b_nvram, TP_NVRAM_ADDR_BRIGHTNESS);
5967 dbg_printk(TPACPI_DBG_BRGHT,
5968 "updated NVRAM backlight level to %u (0x%02x)\n",
5969 (unsigned int) lec, (unsigned int) b_nvram);
5970 } else
5971 vdbg_printk(TPACPI_DBG_BRGHT,
5972 "NVRAM backlight level already is %u (0x%02x)\n",
5973 (unsigned int) lec, (unsigned int) b_nvram);
5974
5975unlock:
5976 mutex_unlock(&brightness_mutex);
5977}
5978
5979
5980/* call with brightness_mutex held! */
5981static int tpacpi_brightness_get_raw(int *status)
5982{
5983 u8 lec = 0;
5984
5985 switch (brightness_mode) {
5986 case TPACPI_BRGHT_MODE_UCMS_STEP:
5987 *status = tpacpi_brightness_nvram_get();
5988 return 0;
5989 case TPACPI_BRGHT_MODE_EC:
5990 case TPACPI_BRGHT_MODE_ECNVRAM:
5991 if (unlikely(!acpi_ec_read(TP_EC_BACKLIGHT, &lec)))
2d5e94d7 5992 return -EIO;
0e501834
HMH		 5993 *status = lec;
5994 return 0;
5995 default:
5996 return -ENXIO;
b21a15f6 5997 }
0e501834
HMH		 5998}
5999
6000/* call with brightness_mutex held! */
6001/* do NOT call with illegal backlight level value */
6002static int tpacpi_brightness_set_ec(unsigned int value)
6003{
6004 u8 lec = 0;
6005
6006 if (unlikely(!acpi_ec_read(TP_EC_BACKLIGHT, &lec)))
6007 return -EIO;
6008
6009 if (unlikely(!acpi_ec_write(TP_EC_BACKLIGHT,
6010 (lec & TP_EC_BACKLIGHT_CMDMSK) |
6011 (value & TP_EC_BACKLIGHT_LVLMSK))))
6012 return -EIO;
6013
6014 return 0;
6015}
6016
6017/* call with brightness_mutex held! */
6018static int tpacpi_brightness_set_ucmsstep(unsigned int value)
6019{
6020 int cmos_cmd, inc;
6021 unsigned int current_value, i;
6022
6023 current_value = tpacpi_brightness_nvram_get();
6024
6025 if (value == current_value)
6026 return 0;
6027
6028 cmos_cmd = (value > current_value) ?
6029 TP_CMOS_BRIGHTNESS_UP :
6030 TP_CMOS_BRIGHTNESS_DOWN;
6031 inc = (value > current_value) ? 1 : -1;
6032
6033 for (i = current_value; i != value; i += inc)
6034 if (issue_thinkpad_cmos_command(cmos_cmd))
6035 return -EIO;
b21a15f6 6036
e11aecf1 6037 return 0;
b21a15f6
HMH		 6038}
6039
6040/* May return EINTR which can always be mapped to ERESTARTSYS */
0e501834 6041static int brightness_set(unsigned int value)
b21a15f6 6042{
0e501834 6043 int res;
b21a15f6 6044
77775838 6045 if (value > bright_maxlvl || value < 0)
b21a15f6
HMH		 6046 return -EINVAL;
6047
0e501834
HMH		 6048 vdbg_printk(TPACPI_DBG_BRGHT,
6049 "set backlight level to %d\n", value);
6050
7646ea88 6051 res = mutex_lock_killable(&brightness_mutex);
b21a15f6
HMH		 6052 if (res < 0)
6053 return res;
6054
0e501834
HMH		 6055 switch (brightness_mode) {
6056 case TPACPI_BRGHT_MODE_EC:
6057 case TPACPI_BRGHT_MODE_ECNVRAM:
6058 res = tpacpi_brightness_set_ec(value);
6059 break;
6060 case TPACPI_BRGHT_MODE_UCMS_STEP:
6061 res = tpacpi_brightness_set_ucmsstep(value);
6062 break;
6063 default:
6064 res = -ENXIO;
b21a15f6
HMH		 6065 }
6066
b21a15f6
HMH		 6067 mutex_unlock(&brightness_mutex);
6068 return res;
6069}
6070
6071/* sysfs backlight class ----------------------------------------------- */
6072
6073static int brightness_update_status(struct backlight_device *bd)
6074{
0e501834 6075 unsigned int level =
b21a15f6
HMH		 6076 (bd->props.fb_blank == FB_BLANK_UNBLANK &&
6077 bd->props.power == FB_BLANK_UNBLANK) ?
0e501834
HMH		 6078 bd->props.brightness : 0;
6079
6080 dbg_printk(TPACPI_DBG_BRGHT,
6081 "backlight: attempt to set level to %d\n",
6082 level);
6083
6084 /* it is the backlight class's job (caller) to handle
6085 * EINTR and other errors properly */
6086 return brightness_set(level);
b21a15f6
HMH		 6087}
6088
e11aecf1 6089static int brightness_get(struct backlight_device *bd)
a3f104c0 6090{
e11aecf1 6091 int status, res;
a3f104c0 6092
0e501834 6093 res = mutex_lock_killable(&brightness_mutex);
e11aecf1 6094 if (res < 0)
0e501834
HMH		 6095 return 0;
6096
6097 res = tpacpi_brightness_get_raw(&status);
6098
6099 mutex_unlock(&brightness_mutex);
6100
6101 if (res < 0)
6102 return 0;
e11e211a 6103
e11aecf1 6104 return status & TP_EC_BACKLIGHT_LVLMSK;
e11e211a
HMH		 6105}
6106
347a2686
HMH		 6107static void tpacpi_brightness_notify_change(void)
6108{
6109 backlight_force_update(ibm_backlight_device,
6110 BACKLIGHT_UPDATE_HOTKEY);
6111}
6112
acc2472e 6113static const struct backlight_ops ibm_backlight_data = {
35ff8b9f
HMH		 6114 .get_brightness = brightness_get,
6115 .update_status = brightness_update_status,
56b6aeb0 6116};
e11e211a 6117
b21a15f6 6118/* --------------------------------------------------------------------- */
e11e211a 6119
122f2672
HMH		 6120/*
6121 * Call _BCL method of video device. On some ThinkPads this will
6122 * switch the firmware to the ACPI brightness control mode.
6123 */
6124
77775838
HMH		 6125static int __init tpacpi_query_bcl_levels(acpi_handle handle)
6126{
6127 struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
6128 union acpi_object *obj;
6129 int rc;
6130
122f2672 6131 if (ACPI_SUCCESS(acpi_evaluate_object(handle, "_BCL", NULL, &buffer))) {
77775838
HMH		 6132 obj = (union acpi_object *)buffer.pointer;
6133 if (!obj || (obj->type != ACPI_TYPE_PACKAGE)) {
6134 printk(TPACPI_ERR "Unknown _BCL data, "
6135 "please report this to %s\n", TPACPI_MAIL);
6136 rc = 0;
6137 } else {
6138 rc = obj->package.count;
6139 }
6140 } else {
6141 return 0;
6142 }
6143
6144 kfree(buffer.pointer);
6145 return rc;
6146}
6147
77775838
HMH		 6148
6149/*
6150 * Returns 0 (no ACPI _BCL or _BCL invalid), or size of brightness map
6151 */
6152static unsigned int __init tpacpi_check_std_acpi_brightness_support(void)
6153{
122f2672 6154 acpi_handle video_device;
77775838 6155 int bcl_levels = 0;
77775838 6156
122f2672
HMH		 6157 tpacpi_acpi_handle_locate("video", ACPI_VIDEO_HID, &video_device);
6158 if (video_device)
6159 bcl_levels = tpacpi_query_bcl_levels(video_device);
77775838 6160
122f2672 6161 tp_features.bright_acpimode = (bcl_levels > 0);
77775838 6162
122f2672 6163 return (bcl_levels > 2) ? (bcl_levels - 2) : 0;
77775838
HMH		 6164}
6165
59fe4fe3
HMH		 6166/*
6167 * These are only useful for models that have only one possibility
6168 * of GPU. If the BIOS model handles both ATI and Intel, don't use
6169 * these quirks.
6170 */
6171#define TPACPI_BRGHT_Q_NOEC 0x0001 /* Must NOT use EC HBRV */
6172#define TPACPI_BRGHT_Q_EC 0x0002 /* Should or must use EC HBRV */
6173#define TPACPI_BRGHT_Q_ASK 0x8000 /* Ask for user report */
6174
6175static const struct tpacpi_quirk brightness_quirk_table[] __initconst = {
6176 /* Models with ATI GPUs known to require ECNVRAM mode */
6177 TPACPI_Q_IBM('1', 'Y', TPACPI_BRGHT_Q_EC), /* T43/p ATI */
6178
6da25bf5 6179 /* Models with ATI GPUs that can use ECNVRAM */
7d1894d8 6180 TPACPI_Q_IBM('1', 'R', TPACPI_BRGHT_Q_EC), /* R50,51 T40-42 */
59fe4fe3 6181 TPACPI_Q_IBM('1', 'Q', TPACPI_BRGHT_Q_ASK|TPACPI_BRGHT_Q_EC),
7d1894d8 6182 TPACPI_Q_IBM('7', '6', TPACPI_BRGHT_Q_EC), /* R52 */
59fe4fe3
HMH		 6183 TPACPI_Q_IBM('7', '8', TPACPI_BRGHT_Q_ASK|TPACPI_BRGHT_Q_EC),
6184
6da25bf5 6185 /* Models with Intel Extreme Graphics 2 */
7d1894d8 6186 TPACPI_Q_IBM('1', 'U', TPACPI_BRGHT_Q_NOEC), /* X40 */
a9f8eacc
HMH		 6187 TPACPI_Q_IBM('1', 'V', TPACPI_BRGHT_Q_ASK|TPACPI_BRGHT_Q_EC),
6188 TPACPI_Q_IBM('1', 'W', TPACPI_BRGHT_Q_ASK|TPACPI_BRGHT_Q_EC),
59fe4fe3
HMH		 6189
6190 /* Models with Intel GMA900 */
6191 TPACPI_Q_IBM('7', '0', TPACPI_BRGHT_Q_NOEC), /* T43, R52 */
6192 TPACPI_Q_IBM('7', '4', TPACPI_BRGHT_Q_NOEC), /* X41 */
6193 TPACPI_Q_IBM('7', '5', TPACPI_BRGHT_Q_NOEC), /* X41 Tablet */
6194};
6195
77775838
HMH		 6196/*
6197 * Returns < 0 for error, otherwise sets tp_features.bright_*
6198 * and bright_maxlvl.
6199 */
6200static void __init tpacpi_detect_brightness_capabilities(void)
6201{
6202 unsigned int b;
6203
6204 vdbg_printk(TPACPI_DBG_INIT,
6205 "detecting firmware brightness interface capabilities\n");
6206
6207 /* we could run a quirks check here (same table used by
6208 * brightness_init) if needed */
6209
6210 /*
6211 * We always attempt to detect acpi support, so as to switch
6212 * Lenovo Vista BIOS to ACPI brightness mode even if we are not
6213 * going to publish a backlight interface
6214 */
6215 b = tpacpi_check_std_acpi_brightness_support();
6216 switch (b) {
6217 case 16:
6218 bright_maxlvl = 15;
6219 printk(TPACPI_INFO
6220 "detected a 16-level brightness capable ThinkPad\n");
6221 break;
6222 case 8:
6223 case 0:
6224 bright_maxlvl = 7;
6225 printk(TPACPI_INFO
6226 "detected a 8-level brightness capable ThinkPad\n");
6227 break;
6228 default:
6229 printk(TPACPI_ERR
6230 "Unsupported brightness interface, "
6231 "please contact %s\n", TPACPI_MAIL);
6232 tp_features.bright_unkfw = 1;
6233 bright_maxlvl = b - 1;
6234 }
6235}
6236
a5763f22 6237static int __init brightness_init(struct ibm_init_struct *iibm)
56b6aeb0 6238{
a19a6ee6 6239 struct backlight_properties props;
56b6aeb0 6240 int b;
59fe4fe3 6241 unsigned long quirks;
56b6aeb0 6242
fe08bc4b
HMH		 6243 vdbg_printk(TPACPI_DBG_INIT, "initializing brightness subdriver\n");
6244
f432255e
HMH		 6245 mutex_init(&brightness_mutex);
6246
59fe4fe3
HMH		 6247 quirks = tpacpi_check_quirks(brightness_quirk_table,
6248 ARRAY_SIZE(brightness_quirk_table));
6249
77775838
HMH		 6250 /* tpacpi_detect_brightness_capabilities() must have run already */
6251
6252 /* if it is unknown, we don't handle it: it wouldn't be safe */
6253 if (tp_features.bright_unkfw)
6254 return 1;
2dba1b5d 6255
b5972796 6256 if (!brightness_enable) {
0e501834 6257 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_BRGHT,
b5972796
HMH		 6258 "brightness support disabled by "
6259 "module parameter\n");
6260 return 1;
6261 }
6262
217f0963
HMH		 6263 if (acpi_video_backlight_support()) {
6264 if (brightness_enable > 1) {
6265 printk(TPACPI_INFO
6266 "Standard ACPI backlight interface "
6267 "available, not loading native one.\n");
6268 return 1;
6269 } else if (brightness_enable == 1) {
6270 printk(TPACPI_WARN
6271 "Cannot enable backlight brightness support, "
6272 "ACPI is already handling it. Refer to the "
6273 "acpi_backlight kernel parameter\n");
6274 return 1;
6275 }
6276 } else if (tp_features.bright_acpimode && brightness_enable > 1) {
6277 printk(TPACPI_NOTICE
6278 "Standard ACPI backlight interface not "
6279 "available, thinkpad_acpi native "
6280 "brightness control enabled\n");
6281 }
6282
0e501834
HMH		 6283 /*
6284 * Check for module parameter bogosity, note that we
6285 * init brightness_mode to TPACPI_BRGHT_MODE_MAX in order to be
6286 * able to detect "unspecified"
6287 */
6288 if (brightness_mode > TPACPI_BRGHT_MODE_MAX)
6289 return -EINVAL;
24d3b774 6290
0e501834
HMH		 6291 /* TPACPI_BRGHT_MODE_AUTO not implemented yet, just use default */
6292 if (brightness_mode == TPACPI_BRGHT_MODE_AUTO ||
6293 brightness_mode == TPACPI_BRGHT_MODE_MAX) {
59fe4fe3
HMH		 6294 if (quirks & TPACPI_BRGHT_Q_EC)
6295 brightness_mode = TPACPI_BRGHT_MODE_ECNVRAM;
6296 else
0e501834 6297 brightness_mode = TPACPI_BRGHT_MODE_UCMS_STEP;
24d3b774 6298
0e501834 6299 dbg_printk(TPACPI_DBG_BRGHT,
59fe4fe3 6300 "driver auto-selected brightness_mode=%d\n",
0e501834
HMH		 6301 brightness_mode);
6302 }
24d3b774 6303
d7880f10 6304 /* Safety */
e28393c0 6305 if (!tpacpi_is_ibm() &&
d7880f10
HMH		 6306 (brightness_mode == TPACPI_BRGHT_MODE_ECNVRAM ||
6307 brightness_mode == TPACPI_BRGHT_MODE_EC))
6308 return -EINVAL;
6309
0e501834 6310 if (tpacpi_brightness_get_raw(&b) < 0)
24d3b774 6311 return 1;
56b6aeb0 6312
a19a6ee6 6313 memset(&props, 0, sizeof(struct backlight_properties));
77775838
HMH		 6314 props.max_brightness = bright_maxlvl;
6315 props.brightness = b & TP_EC_BACKLIGHT_LVLMSK;
a19a6ee6
MG		 6316 ibm_backlight_device = backlight_device_register(TPACPI_BACKLIGHT_DEV_NAME,
6317 NULL, NULL,
6318 &ibm_backlight_data,
6319 &props);
56b6aeb0 6320 if (IS_ERR(ibm_backlight_device)) {
435c47e2
HMH		 6321 int rc = PTR_ERR(ibm_backlight_device);
6322 ibm_backlight_device = NULL;
e0c7dfe7 6323 printk(TPACPI_ERR "Could not register backlight device\n");
435c47e2 6324 return rc;
56b6aeb0 6325 }
0e501834
HMH		 6326 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_BRGHT,
6327 "brightness is supported\n");
56b6aeb0 6328
59fe4fe3
HMH		 6329 if (quirks & TPACPI_BRGHT_Q_ASK) {
6330 printk(TPACPI_NOTICE
6331 "brightness: will use unverified default: "
6332 "brightness_mode=%d\n", brightness_mode);
6333 printk(TPACPI_NOTICE
6334 "brightness: please report to %s whether it works well "
6335 "or not on your ThinkPad\n", TPACPI_MAIL);
6336 }
6337
7d9745cf
HMH		 6338 /* Added by mistake in early 2007. Probably useless, but it could
6339 * be working around some unknown firmware problem where the value
6340 * read at startup doesn't match the real hardware state... so leave
6341 * it in place just in case */
56b6aeb0
HMH		 6342 backlight_update_status(ibm_backlight_device);
6343
347a2686
HMH		 6344 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_BRGHT,
6345 "brightness: registering brightness hotkeys "
6346 "as change notification\n");
6347 tpacpi_hotkey_driver_mask_set(hotkey_driver_mask
6348 | TP_ACPI_HKEY_BRGHTUP_MASK
3098064d 6349 | TP_ACPI_HKEY_BRGHTDWN_MASK);
56b6aeb0
HMH		 6350 return 0;
6351}
6352
0e501834
HMH		 6353static void brightness_suspend(pm_message_t state)
6354{
6355 tpacpi_brightness_checkpoint_nvram();
6356}
6357
6358static void brightness_shutdown(void)
6359{
6360 tpacpi_brightness_checkpoint_nvram();
6361}
6362
56b6aeb0
HMH		 6363static void brightness_exit(void)
6364{
6365 if (ibm_backlight_device) {
0e501834 6366 vdbg_printk(TPACPI_DBG_EXIT | TPACPI_DBG_BRGHT,
fe08bc4b 6367 "calling backlight_device_unregister()\n");
56b6aeb0 6368 backlight_device_unregister(ibm_backlight_device);
56b6aeb0 6369 }
0e501834
HMH		 6370
6371 tpacpi_brightness_checkpoint_nvram();
56b6aeb0
HMH		 6372}
6373
887965e6 6374static int brightness_read(struct seq_file *m)
56b6aeb0 6375{
56b6aeb0
HMH		 6376 int level;
6377
35ff8b9f
HMH		 6378 level = brightness_get(NULL);
6379 if (level < 0) {
887965e6 6380 seq_printf(m, "level:\t\tunreadable\n");
56b6aeb0 6381 } else {
887965e6
AD		 6382 seq_printf(m, "level:\t\t%d\n", level);
6383 seq_printf(m, "commands:\tup, down\n");
77775838
HMH		 6384 seq_printf(m, "commands:\tlevel <level> (<level> is 0-%d)\n",
6385 bright_maxlvl);
56b6aeb0
HMH		 6386 }
6387
887965e6 6388 return 0;
56b6aeb0
HMH		 6389}
6390
8acb0250
HM		 6391static int brightness_write(char *buf)
6392{
6393 int level;
4273af8d 6394 int rc;
1da177e4 6395 char *cmd;
1da177e4 6396
4273af8d
HMH		 6397 level = brightness_get(NULL);
6398 if (level < 0)
6399 return level;
78f81cc4 6400
4273af8d 6401 while ((cmd = next_cmd(&buf))) {
78f81cc4 6402 if (strlencmp(cmd, "up") == 0) {
77775838 6403 if (level < bright_maxlvl)
4273af8d 6404 level++;
78f81cc4 6405 } else if (strlencmp(cmd, "down") == 0) {
4273af8d
HMH		 6406 if (level > 0)
6407 level--;
6408 } else if (sscanf(cmd, "level %d", &level) == 1 &&
77775838 6409 level >= 0 && level <= bright_maxlvl) {
4273af8d 6410 /* new level set */
78f81cc4
BD		 6411 } else
6412 return -EINVAL;
78f81cc4
BD		 6413 }
6414
0e501834
HMH		 6415 tpacpi_disclose_usertask("procfs brightness",
6416 "set level to %d\n", level);
6417
4273af8d
HMH		 6418 /*
6419 * Now we know what the final level should be, so we try to set it.
6420 * Doing it this way makes the syscall restartable in case of EINTR
6421 */
6422 rc = brightness_set(level);
347a2686
HMH		 6423 if (!rc && ibm_backlight_device)
6424 backlight_force_update(ibm_backlight_device,
6425 BACKLIGHT_UPDATE_SYSFS);
80a8d122 6426 return (rc == -EINTR)? -ERESTARTSYS : rc;
78f81cc4
BD		 6427}
6428
a5763f22
HMH		 6429static struct ibm_struct brightness_driver_data = {
6430 .name = "brightness",
6431 .read = brightness_read,
6432 .write = brightness_write,
6433 .exit = brightness_exit,
0e501834
HMH		 6434 .suspend = brightness_suspend,
6435 .shutdown = brightness_shutdown,
a5763f22
HMH		 6436};
6437
56b6aeb0
HMH		 6438/*************************************************************************
6439 * Volume subdriver
6440 */
fb87a811 6441
329e4e18
HMH		 6442/*
6443 * IBM ThinkPads have a simple volume controller with MUTE gating.
6444 * Very early Lenovo ThinkPads follow the IBM ThinkPad spec.
6445 *
6446 * Since the *61 series (and probably also the later *60 series), Lenovo
6447 * ThinkPads only implement the MUTE gate.
6448 *
6449 * EC register 0x30
6450 * Bit 6: MUTE (1 mutes sound)
6451 * Bit 3-0: Volume
6452 * Other bits should be zero as far as we know.
6453 *
6454 * This is also stored in CMOS NVRAM, byte 0x60, bit 6 (MUTE), and
6455 * bits 3-0 (volume). Other bits in NVRAM may have other functions,
6456 * such as bit 7 which is used to detect repeated presses of MUTE,
6457 * and we leave them unchanged.
6458 */
6459
ff850c33
HMH		 6460#ifdef CONFIG_THINKPAD_ACPI_ALSA_SUPPORT
6461
0d204c34
HMH		 6462#define TPACPI_ALSA_DRVNAME "ThinkPad EC"
6463#define TPACPI_ALSA_SHRTNAME "ThinkPad Console Audio Control"
6464#define TPACPI_ALSA_MIXERNAME TPACPI_ALSA_SHRTNAME
6465
ead510ce 6466static int alsa_index = ~((1 << (SNDRV_CARDS - 3)) - 1); /* last three slots */
0d204c34
HMH		 6467static char *alsa_id = "ThinkPadEC";
6468static int alsa_enable = SNDRV_DEFAULT_ENABLE1;
6469
6470struct tpacpi_alsa_data {
6471 struct snd_card *card;
6472 struct snd_ctl_elem_id *ctl_mute_id;
6473 struct snd_ctl_elem_id *ctl_vol_id;
6474};
6475
6476static struct snd_card *alsa_card;
6477
329e4e18
HMH		 6478enum {
6479 TP_EC_AUDIO = 0x30,
6480
6481 /* TP_EC_AUDIO bits */
6482 TP_EC_AUDIO_MUTESW = 6,
6483
6484 /* TP_EC_AUDIO bitmasks */
6485 TP_EC_AUDIO_LVL_MSK = 0x0F,
6486 TP_EC_AUDIO_MUTESW_MSK = (1 << TP_EC_AUDIO_MUTESW),
6487
6488 /* Maximum volume */
6489 TP_EC_VOLUME_MAX = 14,
6490};
6491
6492enum tpacpi_volume_access_mode {
6493 TPACPI_VOL_MODE_AUTO = 0, /* Not implemented yet */
6494 TPACPI_VOL_MODE_EC, /* Pure EC control */
6495 TPACPI_VOL_MODE_UCMS_STEP, /* UCMS step-based control: N/A */
6496 TPACPI_VOL_MODE_ECNVRAM, /* EC control w/ NVRAM store */
6497 TPACPI_VOL_MODE_MAX
6498};
6499
a112ceee
HMH		 6500enum tpacpi_volume_capabilities {
6501 TPACPI_VOL_CAP_AUTO = 0, /* Use white/blacklist */
6502 TPACPI_VOL_CAP_VOLMUTE, /* Output vol and mute */
6503 TPACPI_VOL_CAP_MUTEONLY, /* Output mute only */
6504 TPACPI_VOL_CAP_MAX
6505};
6506
329e4e18
HMH		 6507static enum tpacpi_volume_access_mode volume_mode =
6508 TPACPI_VOL_MODE_MAX;
6509
a112ceee 6510static enum tpacpi_volume_capabilities volume_capabilities;
c7ac6291 6511static int volume_control_allowed;
f74a27d4 6512
329e4e18
HMH		 6513/*
6514 * Used to syncronize writers to TP_EC_AUDIO and
6515 * TP_NVRAM_ADDR_MIXER, as we need to do read-modify-write
6516 */
6517static struct mutex volume_mutex;
6518
6519static void tpacpi_volume_checkpoint_nvram(void)
78f81cc4 6520{
329e4e18
HMH		 6521 u8 lec = 0;
6522 u8 b_nvram;
a112ceee 6523 u8 ec_mask;
329e4e18
HMH		 6524
6525 if (volume_mode != TPACPI_VOL_MODE_ECNVRAM)
6526 return;
c7ac6291
HMH		 6527 if (!volume_control_allowed)
6528 return;
329e4e18
HMH		 6529
6530 vdbg_printk(TPACPI_DBG_MIXER,
6531 "trying to checkpoint mixer state to NVRAM...\n");
78f81cc4 6532
a112ceee
HMH		 6533 if (tp_features.mixer_no_level_control)
6534 ec_mask = TP_EC_AUDIO_MUTESW_MSK;
6535 else
6536 ec_mask = TP_EC_AUDIO_MUTESW_MSK | TP_EC_AUDIO_LVL_MSK;
6537
329e4e18
HMH		 6538 if (mutex_lock_killable(&volume_mutex) < 0)
6539 return;
6540
6541 if (unlikely(!acpi_ec_read(TP_EC_AUDIO, &lec)))
6542 goto unlock;
6543 lec &= ec_mask;
6544 b_nvram = nvram_read_byte(TP_NVRAM_ADDR_MIXER);
6545
6546 if (lec != (b_nvram & ec_mask)) {
6547 /* NVRAM needs update */
6548 b_nvram &= ~ec_mask;
6549 b_nvram |= lec;
6550 nvram_write_byte(b_nvram, TP_NVRAM_ADDR_MIXER);
6551 dbg_printk(TPACPI_DBG_MIXER,
6552 "updated NVRAM mixer status to 0x%02x (0x%02x)\n",
6553 (unsigned int) lec, (unsigned int) b_nvram);
78f81cc4 6554 } else {
329e4e18
HMH		 6555 vdbg_printk(TPACPI_DBG_MIXER,
6556 "NVRAM mixer status already is 0x%02x (0x%02x)\n",
6557 (unsigned int) lec, (unsigned int) b_nvram);
78f81cc4
BD		 6558 }
6559
329e4e18
HMH		 6560unlock:
6561 mutex_unlock(&volume_mutex);
78f81cc4
BD		 6562}
6563
329e4e18 6564static int volume_get_status_ec(u8 *status)
78f81cc4 6565{
329e4e18 6566 u8 s;
78f81cc4 6567
329e4e18
HMH		 6568 if (!acpi_ec_read(TP_EC_AUDIO, &s))
6569 return -EIO;
78f81cc4 6570
329e4e18 6571 *status = s;
1da177e4 6572
329e4e18 6573 dbg_printk(TPACPI_DBG_MIXER, "status 0x%02x\n", s);
35ff8b9f 6574
329e4e18
HMH		 6575 return 0;
6576}
78f81cc4 6577
329e4e18
HMH		 6578static int volume_get_status(u8 *status)
6579{
6580 return volume_get_status_ec(status);
6581}
78f81cc4 6582
329e4e18
HMH		 6583static int volume_set_status_ec(const u8 status)
6584{
6585 if (!acpi_ec_write(TP_EC_AUDIO, status))
6586 return -EIO;
78f81cc4 6587
329e4e18
HMH		 6588 dbg_printk(TPACPI_DBG_MIXER, "set EC mixer to 0x%02x\n", status);
6589
6590 return 0;
6591}
6592
6593static int volume_set_status(const u8 status)
6594{
6595 return volume_set_status_ec(status);
6596}
6597
88cc8377
HMH		 6598/* returns < 0 on error, 0 on no change, 1 on change */
6599static int __volume_set_mute_ec(const bool mute)
329e4e18
HMH		 6600{
6601 int rc;
6602 u8 s, n;
6603
6604 if (mutex_lock_killable(&volume_mutex) < 0)
6605 return -EINTR;
6606
6607 rc = volume_get_status_ec(&s);
6608 if (rc)
6609 goto unlock;
6610
6611 n = (mute) ? s | TP_EC_AUDIO_MUTESW_MSK :
6612 s & ~TP_EC_AUDIO_MUTESW_MSK;
6613
88cc8377 6614 if (n != s) {
329e4e18 6615 rc = volume_set_status_ec(n);
88cc8377
HMH		 6616 if (!rc)
6617 rc = 1;
6618 }
329e4e18
HMH		 6619
6620unlock:
6621 mutex_unlock(&volume_mutex);
6622 return rc;
6623}
6624
88cc8377
HMH		 6625static int volume_alsa_set_mute(const bool mute)
6626{
6627 dbg_printk(TPACPI_DBG_MIXER, "ALSA: trying to %smute\n",
6628 (mute) ? "" : "un");
6629 return __volume_set_mute_ec(mute);
6630}
6631
329e4e18
HMH		 6632static int volume_set_mute(const bool mute)
6633{
88cc8377
HMH		 6634 int rc;
6635
329e4e18
HMH		 6636 dbg_printk(TPACPI_DBG_MIXER, "trying to %smute\n",
6637 (mute) ? "" : "un");
88cc8377
HMH		 6638
6639 rc = __volume_set_mute_ec(mute);
6640 return (rc < 0) ? rc : 0;
329e4e18
HMH		 6641}
6642
88cc8377
HMH		 6643/* returns < 0 on error, 0 on no change, 1 on change */
6644static int __volume_set_volume_ec(const u8 vol)
329e4e18
HMH		 6645{
6646 int rc;
6647 u8 s, n;
6648
6649 if (vol > TP_EC_VOLUME_MAX)
6650 return -EINVAL;
6651
6652 if (mutex_lock_killable(&volume_mutex) < 0)
6653 return -EINTR;
6654
6655 rc = volume_get_status_ec(&s);
6656 if (rc)
6657 goto unlock;
6658
6659 n = (s & ~TP_EC_AUDIO_LVL_MSK) | vol;
6660
88cc8377 6661 if (n != s) {
329e4e18 6662 rc = volume_set_status_ec(n);
88cc8377
HMH		 6663 if (!rc)
6664 rc = 1;
6665 }
329e4e18
HMH		 6666
6667unlock:
6668 mutex_unlock(&volume_mutex);
6669 return rc;
6670}
6671
88cc8377 6672static int volume_alsa_set_volume(const u8 vol)
329e4e18
HMH		 6673{
6674 dbg_printk(TPACPI_DBG_MIXER,
88cc8377
HMH		 6675 "ALSA: trying to set volume level to %hu\n", vol);
6676 return __volume_set_volume_ec(vol);
329e4e18
HMH		 6677}
6678
0d204c34
HMH		 6679static void volume_alsa_notify_change(void)
6680{
6681 struct tpacpi_alsa_data *d;
6682
6683 if (alsa_card && alsa_card->private_data) {
6684 d = alsa_card->private_data;
6685 if (d->ctl_mute_id)
6686 snd_ctl_notify(alsa_card,
6687 SNDRV_CTL_EVENT_MASK_VALUE,
6688 d->ctl_mute_id);
6689 if (d->ctl_vol_id)
6690 snd_ctl_notify(alsa_card,
6691 SNDRV_CTL_EVENT_MASK_VALUE,
6692 d->ctl_vol_id);
6693 }
6694}
6695
6696static int volume_alsa_vol_info(struct snd_kcontrol *kcontrol,
6697 struct snd_ctl_elem_info *uinfo)
6698{
6699 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
6700 uinfo->count = 1;
6701 uinfo->value.integer.min = 0;
6702 uinfo->value.integer.max = TP_EC_VOLUME_MAX;
6703 return 0;
6704}
6705
6706static int volume_alsa_vol_get(struct snd_kcontrol *kcontrol,
6707 struct snd_ctl_elem_value *ucontrol)
6708{
6709 u8 s;
6710 int rc;
6711
6712 rc = volume_get_status(&s);
6713 if (rc < 0)
6714 return rc;
6715
6716 ucontrol->value.integer.value[0] = s & TP_EC_AUDIO_LVL_MSK;
6717 return 0;
6718}
6719
6720static int volume_alsa_vol_put(struct snd_kcontrol *kcontrol,
6721 struct snd_ctl_elem_value *ucontrol)
6722{
38e11cde
HMH		 6723 tpacpi_disclose_usertask("ALSA", "set volume to %ld\n",
6724 ucontrol->value.integer.value[0]);
88cc8377 6725 return volume_alsa_set_volume(ucontrol->value.integer.value[0]);
0d204c34
HMH		 6726}
6727
6728#define volume_alsa_mute_info snd_ctl_boolean_mono_info
6729
6730static int volume_alsa_mute_get(struct snd_kcontrol *kcontrol,
6731 struct snd_ctl_elem_value *ucontrol)
6732{
6733 u8 s;
6734 int rc;
6735
6736 rc = volume_get_status(&s);
6737 if (rc < 0)
6738 return rc;
6739
6740 ucontrol->value.integer.value[0] =
6741 (s & TP_EC_AUDIO_MUTESW_MSK) ? 0 : 1;
6742 return 0;
6743}
6744
6745static int volume_alsa_mute_put(struct snd_kcontrol *kcontrol,
6746 struct snd_ctl_elem_value *ucontrol)
6747{
38e11cde
HMH		 6748 tpacpi_disclose_usertask("ALSA", "%smute\n",
6749 ucontrol->value.integer.value[0] ?
6750 "un" : "");
88cc8377 6751 return volume_alsa_set_mute(!ucontrol->value.integer.value[0]);
0d204c34
HMH		 6752}
6753
6754static struct snd_kcontrol_new volume_alsa_control_vol __devinitdata = {
6755 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
6756 .name = "Console Playback Volume",
6757 .index = 0,
6758 .access = SNDRV_CTL_ELEM_ACCESS_READ,
6759 .info = volume_alsa_vol_info,
6760 .get = volume_alsa_vol_get,
6761};
6762
6763static struct snd_kcontrol_new volume_alsa_control_mute __devinitdata = {
6764 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
6765 .name = "Console Playback Switch",
6766 .index = 0,
6767 .access = SNDRV_CTL_ELEM_ACCESS_READ,
6768 .info = volume_alsa_mute_info,
6769 .get = volume_alsa_mute_get,
6770};
6771
329e4e18
HMH		 6772static void volume_suspend(pm_message_t state)
6773{
6774 tpacpi_volume_checkpoint_nvram();
6775}
6776
0d204c34
HMH		 6777static void volume_resume(void)
6778{
6779 volume_alsa_notify_change();
6780}
6781
329e4e18
HMH		 6782static void volume_shutdown(void)
6783{
6784 tpacpi_volume_checkpoint_nvram();
6785}
6786
6787static void volume_exit(void)
6788{
0d204c34
HMH		 6789 if (alsa_card) {
6790 snd_card_free(alsa_card);
6791 alsa_card = NULL;
6792 }
6793
329e4e18
HMH		 6794 tpacpi_volume_checkpoint_nvram();
6795}
6796
0d204c34
HMH		 6797static int __init volume_create_alsa_mixer(void)
6798{
6799 struct snd_card *card;
6800 struct tpacpi_alsa_data *data;
6801 struct snd_kcontrol *ctl_vol;
6802 struct snd_kcontrol *ctl_mute;
6803 int rc;
6804
6805 rc = snd_card_create(alsa_index, alsa_id, THIS_MODULE,
6806 sizeof(struct tpacpi_alsa_data), &card);
74c75c18
HMH		 6807 if (rc < 0 || !card) {
6808 printk(TPACPI_ERR
6809 "Failed to create ALSA card structures: %d\n", rc);
6810 return 1;
6811 }
0d204c34
HMH		 6812
6813 BUG_ON(!card->private_data);
6814 data = card->private_data;
6815 data->card = card;
6816
6817 strlcpy(card->driver, TPACPI_ALSA_DRVNAME,
6818 sizeof(card->driver));
6819 strlcpy(card->shortname, TPACPI_ALSA_SHRTNAME,
6820 sizeof(card->shortname));
6821 snprintf(card->mixername, sizeof(card->mixername), "ThinkPad EC %s",
6822 (thinkpad_id.ec_version_str) ?
6823 thinkpad_id.ec_version_str : "(unknown)");
6824 snprintf(card->longname, sizeof(card->longname),
6825 "%s at EC reg 0x%02x, fw %s", card->shortname, TP_EC_AUDIO,
6826 (thinkpad_id.ec_version_str) ?
6827 thinkpad_id.ec_version_str : "unknown");
6828
6829 if (volume_control_allowed) {
6830 volume_alsa_control_vol.put = volume_alsa_vol_put;
6831 volume_alsa_control_vol.access =
6832 SNDRV_CTL_ELEM_ACCESS_READWRITE;
6833
6834 volume_alsa_control_mute.put = volume_alsa_mute_put;
6835 volume_alsa_control_mute.access =
6836 SNDRV_CTL_ELEM_ACCESS_READWRITE;
6837 }
6838
6839 if (!tp_features.mixer_no_level_control) {
6840 ctl_vol = snd_ctl_new1(&volume_alsa_control_vol, NULL);
6841 rc = snd_ctl_add(card, ctl_vol);
6842 if (rc < 0) {
6843 printk(TPACPI_ERR
74c75c18
HMH		 6844 "Failed to create ALSA volume control: %d\n",
6845 rc);
6846 goto err_exit;
78f81cc4 6847 }
0d204c34
HMH		 6848 data->ctl_vol_id = &ctl_vol->id;
6849 }
78f81cc4 6850
0d204c34
HMH		 6851 ctl_mute = snd_ctl_new1(&volume_alsa_control_mute, NULL);
6852 rc = snd_ctl_add(card, ctl_mute);
6853 if (rc < 0) {
74c75c18
HMH		 6854 printk(TPACPI_ERR "Failed to create ALSA mute control: %d\n",
6855 rc);
6856 goto err_exit;
0d204c34
HMH		 6857 }
6858 data->ctl_mute_id = &ctl_mute->id;
35ff8b9f 6859
0d204c34
HMH		 6860 snd_card_set_dev(card, &tpacpi_pdev->dev);
6861 rc = snd_card_register(card);
0d204c34 6862 if (rc < 0) {
74c75c18
HMH		 6863 printk(TPACPI_ERR "Failed to register ALSA card: %d\n", rc);
6864 goto err_exit;
0d204c34
HMH		 6865 }
6866
6867 alsa_card = card;
74c75c18
HMH		 6868 return 0;
6869
6870err_exit:
6871 snd_card_free(card);
6872 return 1;
0d204c34
HMH		 6873}
6874
a112ceee
HMH		 6875#define TPACPI_VOL_Q_MUTEONLY 0x0001 /* Mute-only control available */
6876#define TPACPI_VOL_Q_LEVEL 0x0002 /* Volume control available */
6877
6878static const struct tpacpi_quirk volume_quirk_table[] __initconst = {
6879 /* Whitelist volume level on all IBM by default */
6880 { .vendor = PCI_VENDOR_ID_IBM,
6881 .bios = TPACPI_MATCH_ANY,
6882 .ec = TPACPI_MATCH_ANY,
6883 .quirks = TPACPI_VOL_Q_LEVEL },
6884
6885 /* Lenovo models with volume control (needs confirmation) */
6886 TPACPI_QEC_LNV('7', 'C', TPACPI_VOL_Q_LEVEL), /* R60/i */
6887 TPACPI_QEC_LNV('7', 'E', TPACPI_VOL_Q_LEVEL), /* R60e/i */
6888 TPACPI_QEC_LNV('7', '9', TPACPI_VOL_Q_LEVEL), /* T60/p */
6889 TPACPI_QEC_LNV('7', 'B', TPACPI_VOL_Q_LEVEL), /* X60/s */
6890 TPACPI_QEC_LNV('7', 'J', TPACPI_VOL_Q_LEVEL), /* X60t */
6891 TPACPI_QEC_LNV('7', '7', TPACPI_VOL_Q_LEVEL), /* Z60 */
6892 TPACPI_QEC_LNV('7', 'F', TPACPI_VOL_Q_LEVEL), /* Z61 */
6893
6894 /* Whitelist mute-only on all Lenovo by default */
6895 { .vendor = PCI_VENDOR_ID_LENOVO,
6896 .bios = TPACPI_MATCH_ANY,
6897 .ec = TPACPI_MATCH_ANY,
6898 .quirks = TPACPI_VOL_Q_MUTEONLY }
6899};
6900
329e4e18
HMH		 6901static int __init volume_init(struct ibm_init_struct *iibm)
6902{
a112ceee 6903 unsigned long quirks;
0d204c34 6904 int rc;
a112ceee 6905
329e4e18
HMH		 6906 vdbg_printk(TPACPI_DBG_INIT, "initializing volume subdriver\n");
6907
6908 mutex_init(&volume_mutex);
6909
6910 /*
6911 * Check for module parameter bogosity, note that we
6912 * init volume_mode to TPACPI_VOL_MODE_MAX in order to be
6913 * able to detect "unspecified"
6914 */
6915 if (volume_mode > TPACPI_VOL_MODE_MAX)
6916 return -EINVAL;
6917
6918 if (volume_mode == TPACPI_VOL_MODE_UCMS_STEP) {
6919 printk(TPACPI_ERR
6920 "UCMS step volume mode not implemented, "
6921 "please contact %s\n", TPACPI_MAIL);
6922 return 1;
6923 }
6924
a112ceee
HMH		 6925 if (volume_capabilities >= TPACPI_VOL_CAP_MAX)
6926 return -EINVAL;
6927
0d204c34
HMH		 6928 /*
6929 * The ALSA mixer is our primary interface.
6930 * When disabled, don't install the subdriver at all
6931 */
6932 if (!alsa_enable) {
6933 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER,
6934 "ALSA mixer disabled by parameter, "
6935 "not loading volume subdriver...\n");
6936 return 1;
6937 }
6938
a112ceee
HMH		 6939 quirks = tpacpi_check_quirks(volume_quirk_table,
6940 ARRAY_SIZE(volume_quirk_table));
6941
6942 switch (volume_capabilities) {
6943 case TPACPI_VOL_CAP_AUTO:
6944 if (quirks & TPACPI_VOL_Q_MUTEONLY)
6945 tp_features.mixer_no_level_control = 1;
6946 else if (quirks & TPACPI_VOL_Q_LEVEL)
6947 tp_features.mixer_no_level_control = 0;
6948 else
6949 return 1; /* no mixer */
6950 break;
6951 case TPACPI_VOL_CAP_VOLMUTE:
6952 tp_features.mixer_no_level_control = 0;
6953 break;
6954 case TPACPI_VOL_CAP_MUTEONLY:
6955 tp_features.mixer_no_level_control = 1;
6956 break;
6957 default:
6958 return 1;
6959 }
6960
6961 if (volume_capabilities != TPACPI_VOL_CAP_AUTO)
6962 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER,
6963 "using user-supplied volume_capabilities=%d\n",
6964 volume_capabilities);
6965
329e4e18
HMH		 6966 if (volume_mode == TPACPI_VOL_MODE_AUTO ||
6967 volume_mode == TPACPI_VOL_MODE_MAX) {
6968 volume_mode = TPACPI_VOL_MODE_ECNVRAM;
6969
6970 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER,
6971 "driver auto-selected volume_mode=%d\n",
6972 volume_mode);
6973 } else {
6974 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER,
6975 "using user-supplied volume_mode=%d\n",
6976 volume_mode);
6977 }
6978
6979 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER,
a112ceee
HMH		 6980 "mute is supported, volume control is %s\n",
6981 str_supported(!tp_features.mixer_no_level_control));
329e4e18 6982
0d204c34
HMH		 6983 rc = volume_create_alsa_mixer();
6984 if (rc) {
6985 printk(TPACPI_ERR
6986 "Could not create the ALSA mixer interface\n");
6987 return rc;
6988 }
6989
c7ac6291
HMH		 6990 printk(TPACPI_INFO
6991 "Console audio control enabled, mode: %s\n",
6992 (volume_control_allowed) ?
6993 "override (read/write)" :
6994 "monitor (read only)");
6995
0d204c34
HMH		 6996 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER,
6997 "registering volume hotkeys as change notification\n");
6998 tpacpi_hotkey_driver_mask_set(hotkey_driver_mask
6999 | TP_ACPI_HKEY_VOLUP_MASK
7000 | TP_ACPI_HKEY_VOLDWN_MASK
7001 | TP_ACPI_HKEY_MUTE_MASK);
7002
329e4e18
HMH		 7003 return 0;
7004}
f74a27d4 7005
887965e6 7006static int volume_read(struct seq_file *m)
78f81cc4 7007{
329e4e18 7008 u8 status;
78f81cc4 7009
329e4e18 7010 if (volume_get_status(&status) < 0) {
887965e6 7011 seq_printf(m, "level:\t\tunreadable\n");
78f81cc4 7012 } else {
a112ceee 7013 if (tp_features.mixer_no_level_control)
887965e6 7014 seq_printf(m, "level:\t\tunsupported\n");
a112ceee 7015 else
887965e6 7016 seq_printf(m, "level:\t\t%d\n",
a112ceee
HMH		 7017 status & TP_EC_AUDIO_LVL_MSK);
7018
887965e6 7019 seq_printf(m, "mute:\t\t%s\n",
329e4e18 7020 onoff(status, TP_EC_AUDIO_MUTESW));
a112ceee 7021
c7ac6291 7022 if (volume_control_allowed) {
887965e6 7023 seq_printf(m, "commands:\tunmute, mute\n");
c7ac6291 7024 if (!tp_features.mixer_no_level_control) {
887965e6 7025 seq_printf(m,
c7ac6291 7026 "commands:\tup, down\n");
887965e6 7027 seq_printf(m,
c7ac6291
HMH		 7028 "commands:\tlevel <level>"
7029 " (<level> is 0-%d)\n",
7030 TP_EC_VOLUME_MAX);
7031 }
78f81cc4
BD		 7032 }
7033 }
7034
7035 return 0;
7036}
7037
78f81cc4
BD		 7038static int volume_write(char *buf)
7039{
329e4e18
HMH		 7040 u8 s;
7041 u8 new_level, new_mute;
7042 int l;
78f81cc4 7043 char *cmd;
329e4e18 7044 int rc;
78f81cc4 7045
c7ac6291
HMH		 7046 /*
7047 * We do allow volume control at driver startup, so that the
7048 * user can set initial state through the volume=... parameter hack.
7049 */
7050 if (!volume_control_allowed && tpacpi_lifecycle != TPACPI_LIFE_INIT) {
7051 if (unlikely(!tp_warned.volume_ctrl_forbidden)) {
7052 tp_warned.volume_ctrl_forbidden = 1;
7053 printk(TPACPI_NOTICE
7054 "Console audio control in monitor mode, "
7055 "changes are not allowed.\n");
7056 printk(TPACPI_NOTICE
7057 "Use the volume_control=1 module parameter "
7058 "to enable volume control\n");
7059 }
7060 return -EPERM;
7061 }
7062
329e4e18
HMH		 7063 rc = volume_get_status(&s);
7064 if (rc < 0)
7065 return rc;
78f81cc4 7066
329e4e18
HMH		 7067 new_level = s & TP_EC_AUDIO_LVL_MSK;
7068 new_mute = s & TP_EC_AUDIO_MUTESW_MSK;
7069
7070 while ((cmd = next_cmd(&buf))) {
a112ceee
HMH		 7071 if (!tp_features.mixer_no_level_control) {
7072 if (strlencmp(cmd, "up") == 0) {
7073 if (new_mute)
7074 new_mute = 0;
7075 else if (new_level < TP_EC_VOLUME_MAX)
7076 new_level++;
7077 continue;
7078 } else if (strlencmp(cmd, "down") == 0) {
7079 if (new_mute)
7080 new_mute = 0;
7081 else if (new_level > 0)
7082 new_level--;
7083 continue;
7084 } else if (sscanf(cmd, "level %u", &l) == 1 &&
7085 l >= 0 && l <= TP_EC_VOLUME_MAX) {
7086 new_level = l;
7087 continue;
7088 }
7089 }
7090 if (strlencmp(cmd, "mute") == 0)
329e4e18 7091 new_mute = TP_EC_AUDIO_MUTESW_MSK;
a112ceee
HMH		 7092 else if (strlencmp(cmd, "unmute") == 0)
7093 new_mute = 0;
7094 else
1da177e4 7095 return -EINVAL;
329e4e18 7096 }
1da177e4 7097
a112ceee
HMH		 7098 if (tp_features.mixer_no_level_control) {
7099 tpacpi_disclose_usertask("procfs volume", "%smute\n",
7100 new_mute ? "" : "un");
7101 rc = volume_set_mute(!!new_mute);
7102 } else {
7103 tpacpi_disclose_usertask("procfs volume",
7104 "%smute and set level to %d\n",
7105 new_mute ? "" : "un", new_level);
7106 rc = volume_set_status(new_mute | new_level);
7107 }
0d204c34 7108 volume_alsa_notify_change();
78f81cc4 7109
329e4e18 7110 return (rc == -EINTR) ? -ERESTARTSYS : rc;
78f81cc4
BD		 7111}
7112
a5763f22
HMH		 7113static struct ibm_struct volume_driver_data = {
7114 .name = "volume",
7115 .read = volume_read,
7116 .write = volume_write,
329e4e18
HMH		 7117 .exit = volume_exit,
7118 .suspend = volume_suspend,
0d204c34 7119 .resume = volume_resume,
329e4e18 7120 .shutdown = volume_shutdown,
a5763f22 7121};
56b6aeb0 7122
ff850c33
HMH		 7123#else /* !CONFIG_THINKPAD_ACPI_ALSA_SUPPORT */
7124
7125#define alsa_card NULL
7126
7127static void inline volume_alsa_notify_change(void)
7128{
7129}
7130
7131static int __init volume_init(struct ibm_init_struct *iibm)
7132{
7133 printk(TPACPI_INFO
7134 "volume: disabled as there is no ALSA support in this kernel\n");
7135
7136 return 1;
7137}
7138
7139static struct ibm_struct volume_driver_data = {
7140 .name = "volume",
7141};
7142
7143#endif /* CONFIG_THINKPAD_ACPI_ALSA_SUPPORT */
7144
56b6aeb0
HMH		 7145/*************************************************************************
7146 * Fan subdriver
7147 */
7148
7149/*
7150 * FAN ACCESS MODES
7151 *
efa27145 7152 * TPACPI_FAN_RD_ACPI_GFAN:
56b6aeb0
HMH		 7153 * ACPI GFAN method: returns fan level
7154 *
efa27145 7155 * see TPACPI_FAN_WR_ACPI_SFAN
f51d1a39 7156 * EC 0x2f (HFSP) not available if GFAN exists
56b6aeb0 7157 *
efa27145 7158 * TPACPI_FAN_WR_ACPI_SFAN:
56b6aeb0
HMH		 7159 * ACPI SFAN method: sets fan level, 0 (stop) to 7 (max)
7160 *
f51d1a39
HMH		 7161 * EC 0x2f (HFSP) might be available *for reading*, but do not use
7162 * it for writing.
56b6aeb0 7163 *
efa27145 7164 * TPACPI_FAN_WR_TPEC:
f51d1a39
HMH		 7165 * ThinkPad EC register 0x2f (HFSP): fan control loop mode
7166 * Supported on almost all ThinkPads
56b6aeb0
HMH		 7167 *
7168 * Fan speed changes of any sort (including those caused by the
7169 * disengaged mode) are usually done slowly by the firmware as the
9ddc5b6f 7170 * maximum amount of fan duty cycle change per second seems to be
56b6aeb0
HMH		 7171 * limited.
7172 *
7173 * Reading is not available if GFAN exists.
7174 * Writing is not available if SFAN exists.
7175 *
7176 * Bits
7177 * 7 automatic mode engaged;
7178 * (default operation mode of the ThinkPad)
7179 * fan level is ignored in this mode.
f51d1a39 7180 * 6 full speed mode (takes precedence over bit 7);
56b6aeb0 7181 * not available on all thinkpads. May disable
f51d1a39
HMH		 7182 * the tachometer while the fan controller ramps up
7183 * the speed (which can take up to a few *minutes*).
7184 * Speeds up fan to 100% duty-cycle, which is far above
7185 * the standard RPM levels. It is not impossible that
7186 * it could cause hardware damage.
56b6aeb0
HMH		 7187 * 5-3 unused in some models. Extra bits for fan level
7188 * in others, but still useless as all values above
7189 * 7 map to the same speed as level 7 in these models.
7190 * 2-0 fan level (0..7 usually)
7191 * 0x00 = stop
7192 * 0x07 = max (set when temperatures critical)
7193 * Some ThinkPads may have other levels, see
efa27145 7194 * TPACPI_FAN_WR_ACPI_FANS (X31/X40/X41)
56b6aeb0
HMH		 7195 *
7196 * FIRMWARE BUG: on some models, EC 0x2f might not be initialized at
b595076a 7197 * boot. Apparently the EC does not initialize it, so unless ACPI DSDT
56b6aeb0
HMH		 7198 * does so, its initial value is meaningless (0x07).
7199 *
7200 * For firmware bugs, refer to:
7201 * http://thinkwiki.org/wiki/Embedded_Controller_Firmware#Firmware_Issues
7202 *
7203 * ----
7204 *
7205 * ThinkPad EC register 0x84 (LSB), 0x85 (MSB):
7206 * Main fan tachometer reading (in RPM)
7207 *
7208 * This register is present on all ThinkPads with a new-style EC, and
7209 * it is known not to be present on the A21m/e, and T22, as there is
7210 * something else in offset 0x84 according to the ACPI DSDT. Other
7211 * ThinkPads from this same time period (and earlier) probably lack the
7212 * tachometer as well.
7213 *
877d0310 7214 * Unfortunately a lot of ThinkPads with new-style ECs but whose firmware
56b6aeb0
HMH		 7215 * was never fixed by IBM to report the EC firmware version string
7216 * probably support the tachometer (like the early X models), so
7217 * detecting it is quite hard. We need more data to know for sure.
7218 *
7219 * FIRMWARE BUG: always read 0x84 first, otherwise incorrect readings
7220 * might result.
7221 *
f51d1a39
HMH		 7222 * FIRMWARE BUG: may go stale while the EC is switching to full speed
7223 * mode.
56b6aeb0
HMH		 7224 *
7225 * For firmware bugs, refer to:
7226 * http://thinkwiki.org/wiki/Embedded_Controller_Firmware#Firmware_Issues
7227 *
d7377247
HMH		 7228 * ----
7229 *
7230 * ThinkPad EC register 0x31 bit 0 (only on select models)
7231 *
7232 * When bit 0 of EC register 0x31 is zero, the tachometer registers
7233 * show the speed of the main fan. When bit 0 of EC register 0x31
7234 * is one, the tachometer registers show the speed of the auxiliary
7235 * fan.
7236 *
7237 * Fan control seems to affect both fans, regardless of the state
7238 * of this bit.
7239 *
7240 * So far, only the firmware for the X60/X61 non-tablet versions
7241 * seem to support this (firmware TP-7M).
7242 *
efa27145 7243 * TPACPI_FAN_WR_ACPI_FANS:
56b6aeb0
HMH		 7244 * ThinkPad X31, X40, X41. Not available in the X60.
7245 *
7246 * FANS ACPI handle: takes three arguments: low speed, medium speed,
7247 * high speed. ACPI DSDT seems to map these three speeds to levels
7248 * as follows: STOP LOW LOW MED MED HIGH HIGH HIGH HIGH
7249 * (this map is stored on FAN0..FAN8 as "0,1,1,2,2,3,3,3,3")
7250 *
7251 * The speeds are stored on handles
7252 * (FANA:FAN9), (FANC:FANB), (FANE:FAND).
7253 *
af901ca1 7254 * There are three default speed sets, accessible as handles:
56b6aeb0
HMH		 7255 * FS1L,FS1M,FS1H; FS2L,FS2M,FS2H; FS3L,FS3M,FS3H
7256 *
7257 * ACPI DSDT switches which set is in use depending on various
7258 * factors.
7259 *
efa27145 7260 * TPACPI_FAN_WR_TPEC is also available and should be used to
56b6aeb0
HMH		 7261 * command the fan. The X31/X40/X41 seems to have 8 fan levels,
7262 * but the ACPI tables just mention level 7.
7263 */
7264
f74a27d4
HMH		 7265enum { /* Fan control constants */
7266 fan_status_offset = 0x2f, /* EC register 0x2f */
7267 fan_rpm_offset = 0x84, /* EC register 0x84: LSB, 0x85 MSB (RPM)
7268 * 0x84 must be read before 0x85 */
d7377247
HMH		 7269 fan_select_offset = 0x31, /* EC register 0x31 (Firmware 7M)
7270 bit 0 selects which fan is active */
f74a27d4
HMH		 7271
7272 TP_EC_FAN_FULLSPEED = 0x40, /* EC fan mode: full speed */
7273 TP_EC_FAN_AUTO = 0x80, /* EC fan mode: auto fan control */
7274
7275 TPACPI_FAN_LAST_LEVEL = 0x100, /* Use cached last-seen fan level */
7276};
7277
7278enum fan_status_access_mode {
7279 TPACPI_FAN_NONE = 0, /* No fan status or control */
7280 TPACPI_FAN_RD_ACPI_GFAN, /* Use ACPI GFAN */
7281 TPACPI_FAN_RD_TPEC, /* Use ACPI EC regs 0x2f, 0x84-0x85 */
7282};
7283
7284enum fan_control_access_mode {
7285 TPACPI_FAN_WR_NONE = 0, /* No fan control */
7286 TPACPI_FAN_WR_ACPI_SFAN, /* Use ACPI SFAN */
7287 TPACPI_FAN_WR_TPEC, /* Use ACPI EC reg 0x2f */
7288 TPACPI_FAN_WR_ACPI_FANS, /* Use ACPI FANS and EC reg 0x2f */
7289};
7290
7291enum fan_control_commands {
7292 TPACPI_FAN_CMD_SPEED = 0x0001, /* speed command */
7293 TPACPI_FAN_CMD_LEVEL = 0x0002, /* level command */
7294 TPACPI_FAN_CMD_ENABLE = 0x0004, /* enable/disable cmd,
7295 * and also watchdog cmd */
7296};
7297
7298static int fan_control_allowed;
7299
69ba91cb
HMH		 7300static enum fan_status_access_mode fan_status_access_mode;
7301static enum fan_control_access_mode fan_control_access_mode;
7302static enum fan_control_commands fan_control_commands;
78f81cc4 7303
778b4d74 7304static u8 fan_control_initial_status;
fe98a52c 7305static u8 fan_control_desired_level;
0081b162 7306static u8 fan_control_resume_level;
f74a27d4
HMH		 7307static int fan_watchdog_maxinterval;
7308
7309static struct mutex fan_mutex;
778b4d74 7310
25c68a33 7311static void fan_watchdog_fire(struct work_struct *ignored);
25c68a33 7312static DECLARE_DELAYED_WORK(fan_watchdog_task, fan_watchdog_fire);
16663a87 7313
e0c7dfe7
HMH		 7314TPACPI_HANDLE(fans, ec, "FANS"); /* X31, X40, X41 */
7315TPACPI_HANDLE(gfan, ec, "GFAN", /* 570 */
56b6aeb0
HMH		 7316 "\\FSPD", /* 600e/x, 770e, 770x */
7317 ); /* all others */
e0c7dfe7 7318TPACPI_HANDLE(sfan, ec, "SFAN", /* 570 */
56b6aeb0
HMH		 7319 "JFNS", /* 770x-JL */
7320 ); /* all others */
7321
1c2ece75
HMH		 7322/*
7323 * Unitialized HFSP quirk: ACPI DSDT and EC fail to initialize the
7324 * HFSP register at boot, so it contains 0x07 but the Thinkpad could
7325 * be in auto mode (0x80).
7326 *
7327 * This is corrected by any write to HFSP either by the driver, or
7328 * by the firmware.
7329 *
7330 * We assume 0x07 really means auto mode while this quirk is active,
7331 * as this is far more likely than the ThinkPad being in level 7,
7332 * which is only used by the firmware during thermal emergencies.
7d95a3d5
HMH		 7333 *
7334 * Enable for TP-1Y (T43), TP-78 (R51e), TP-76 (R52),
7335 * TP-70 (T43, R52), which are known to be buggy.
1c2ece75
HMH		 7336 */
7337
7d95a3d5 7338static void fan_quirk1_setup(void)
1c2ece75 7339{
1c2ece75 7340 if (fan_control_initial_status == 0x07) {
7d95a3d5
HMH		 7341 printk(TPACPI_NOTICE
7342 "fan_init: initial fan status is unknown, "
7343 "assuming it is in auto mode\n");
7344 tp_features.fan_ctrl_status_undef = 1;
1c2ece75
HMH		 7345 }
7346}
7347
7348static void fan_quirk1_handle(u8 *fan_status)
7349{
7350 if (unlikely(tp_features.fan_ctrl_status_undef)) {
7351 if (*fan_status != fan_control_initial_status) {
7352 /* something changed the HFSP regisnter since
7353 * driver init time, so it is not undefined
7354 * anymore */
7355 tp_features.fan_ctrl_status_undef = 0;
7356 } else {
7357 /* Return most likely status. In fact, it
7358 * might be the only possible status */
7359 *fan_status = TP_EC_FAN_AUTO;
7360 }
7361 }
7362}
7363
d7377247
HMH		 7364/* Select main fan on X60/X61, NOOP on others */
7365static bool fan_select_fan1(void)
7366{
7367 if (tp_features.second_fan) {
7368 u8 val;
7369
7370 if (ec_read(fan_select_offset, &val) < 0)
7371 return false;
7372 val &= 0xFEU;
7373 if (ec_write(fan_select_offset, val) < 0)
7374 return false;
7375 }
7376 return true;
7377}
7378
7379/* Select secondary fan on X60/X61 */
7380static bool fan_select_fan2(void)
7381{
7382 u8 val;
7383
7384 if (!tp_features.second_fan)
7385 return false;
7386
7387 if (ec_read(fan_select_offset, &val) < 0)
7388 return false;
7389 val |= 0x01U;
7390 if (ec_write(fan_select_offset, val) < 0)
7391 return false;
7392
7393 return true;
7394}
7395
fe98a52c 7396/*
b21a15f6 7397 * Call with fan_mutex held
fe98a52c 7398 */
b21a15f6 7399static void fan_update_desired_level(u8 status)
fe98a52c 7400{
b21a15f6
HMH		 7401 if ((status &
7402 (TP_EC_FAN_AUTO | TP_EC_FAN_FULLSPEED)) == 0) {
7403 if (status > 7)
7404 fan_control_desired_level = 7;
7405 else
7406 fan_control_desired_level = status;
7407 }
7408}
fe98a52c 7409
b21a15f6
HMH		 7410static int fan_get_status(u8 *status)
7411{
7412 u8 s;
fe98a52c 7413
b21a15f6
HMH		 7414 /* TODO:
7415 * Add TPACPI_FAN_RD_ACPI_FANS ? */
fe98a52c 7416
b21a15f6
HMH		 7417 switch (fan_status_access_mode) {
7418 case TPACPI_FAN_RD_ACPI_GFAN:
7419 /* 570, 600e/x, 770e, 770x */
fe98a52c 7420
b21a15f6
HMH		 7421 if (unlikely(!acpi_evalf(gfan_handle, &s, NULL, "d")))
7422 return -EIO;
fe98a52c 7423
b21a15f6
HMH		 7424 if (likely(status))
7425 *status = s & 0x07;
fe98a52c 7426
b21a15f6
HMH		 7427 break;
7428
7429 case TPACPI_FAN_RD_TPEC:
7430 /* all except 570, 600e/x, 770e, 770x */
7431 if (unlikely(!acpi_ec_read(fan_status_offset, &s)))
7432 return -EIO;
7433
1c2ece75 7434 if (likely(status)) {
b21a15f6 7435 *status = s;
1c2ece75
HMH		 7436 fan_quirk1_handle(status);
7437 }
fe98a52c 7438
fe98a52c 7439 break;
b21a15f6 7440
fe98a52c 7441 default:
b21a15f6 7442 return -ENXIO;
fe98a52c
HMH		 7443 }
7444
b21a15f6
HMH		 7445 return 0;
7446}
fe98a52c 7447
b21a15f6
HMH		 7448static int fan_get_status_safe(u8 *status)
7449{
7450 int rc;
7451 u8 s;
fe98a52c 7452
7646ea88 7453 if (mutex_lock_killable(&fan_mutex))
b21a15f6
HMH		 7454 return -ERESTARTSYS;
7455 rc = fan_get_status(&s);
7456 if (!rc)
7457 fan_update_desired_level(s);
7458 mutex_unlock(&fan_mutex);
fe98a52c 7459
b21a15f6
HMH		 7460 if (status)
7461 *status = s;
fe98a52c 7462
b21a15f6
HMH		 7463 return rc;
7464}
7465
7466static int fan_get_speed(unsigned int *speed)
fe98a52c 7467{
b21a15f6 7468 u8 hi, lo;
fe98a52c 7469
b21a15f6
HMH		 7470 switch (fan_status_access_mode) {
7471 case TPACPI_FAN_RD_TPEC:
7472 /* all except 570, 600e/x, 770e, 770x */
d7377247
HMH		 7473 if (unlikely(!fan_select_fan1()))
7474 return -EIO;
b21a15f6
HMH		 7475 if (unlikely(!acpi_ec_read(fan_rpm_offset, &lo) ||
7476 !acpi_ec_read(fan_rpm_offset + 1, &hi)))
7477 return -EIO;
fe98a52c 7478
b21a15f6
HMH		 7479 if (likely(speed))
7480 *speed = (hi << 8) | lo;
fe98a52c 7481
b21a15f6 7482 break;
fe98a52c 7483
b21a15f6
HMH		 7484 default:
7485 return -ENXIO;
7486 }
fe98a52c 7487
b21a15f6 7488 return 0;
fe98a52c
HMH		 7489}
7490
d7377247
HMH		 7491static int fan2_get_speed(unsigned int *speed)
7492{
7493 u8 hi, lo;
7494 bool rc;
7495
7496 switch (fan_status_access_mode) {
7497 case TPACPI_FAN_RD_TPEC:
7498 /* all except 570, 600e/x, 770e, 770x */
7499 if (unlikely(!fan_select_fan2()))
7500 return -EIO;
7501 rc = !acpi_ec_read(fan_rpm_offset, &lo) ||
7502 !acpi_ec_read(fan_rpm_offset + 1, &hi);
7503 fan_select_fan1(); /* play it safe */
7504 if (rc)
7505 return -EIO;
7506
7507 if (likely(speed))
7508 *speed = (hi << 8) | lo;
7509
7510 break;
7511
7512 default:
7513 return -ENXIO;
7514 }
7515
7516 return 0;
7517}
7518
b21a15f6 7519static int fan_set_level(int level)
fe98a52c 7520{
b21a15f6
HMH		 7521 if (!fan_control_allowed)
7522 return -EPERM;
fe98a52c 7523
b21a15f6
HMH		 7524 switch (fan_control_access_mode) {
7525 case TPACPI_FAN_WR_ACPI_SFAN:
7526 if (level >= 0 && level <= 7) {
7527 if (!acpi_evalf(sfan_handle, NULL, NULL, "vd", level))
7528 return -EIO;
7529 } else
7530 return -EINVAL;
7531 break;
fe98a52c 7532
b21a15f6
HMH		 7533 case TPACPI_FAN_WR_ACPI_FANS:
7534 case TPACPI_FAN_WR_TPEC:
0081b162
HMH		 7535 if (!(level & TP_EC_FAN_AUTO) &&
7536 !(level & TP_EC_FAN_FULLSPEED) &&
b21a15f6
HMH		 7537 ((level < 0) || (level > 7)))
7538 return -EINVAL;
fe98a52c 7539
b21a15f6
HMH		 7540 /* safety net should the EC not support AUTO
7541 * or FULLSPEED mode bits and just ignore them */
7542 if (level & TP_EC_FAN_FULLSPEED)
7543 level |= 7; /* safety min speed 7 */
547266e4 7544 else if (level & TP_EC_FAN_AUTO)
b21a15f6 7545 level |= 4; /* safety min speed 4 */
fe98a52c 7546
b21a15f6
HMH		 7547 if (!acpi_ec_write(fan_status_offset, level))
7548 return -EIO;
7549 else
7550 tp_features.fan_ctrl_status_undef = 0;
7551 break;
fe98a52c 7552
b21a15f6
HMH		 7553 default:
7554 return -ENXIO;
7555 }
74a60c0f
HMH		 7556
7557 vdbg_printk(TPACPI_DBG_FAN,
7558 "fan control: set fan control register to 0x%02x\n", level);
b21a15f6 7559 return 0;
fe98a52c
HMH		 7560}
7561
b21a15f6 7562static int fan_set_level_safe(int level)
fe98a52c 7563{
b21a15f6 7564 int rc;
fe98a52c 7565
b21a15f6
HMH		 7566 if (!fan_control_allowed)
7567 return -EPERM;
fe98a52c 7568
7646ea88 7569 if (mutex_lock_killable(&fan_mutex))
b21a15f6 7570 return -ERESTARTSYS;
fe98a52c 7571
b21a15f6
HMH		 7572 if (level == TPACPI_FAN_LAST_LEVEL)
7573 level = fan_control_desired_level;
fe98a52c 7574
b21a15f6
HMH		 7575 rc = fan_set_level(level);
7576 if (!rc)
7577 fan_update_desired_level(level);
7578
7579 mutex_unlock(&fan_mutex);
7580 return rc;
fe98a52c
HMH		 7581}
7582
b21a15f6 7583static int fan_set_enable(void)
fe98a52c 7584{
b21a15f6
HMH		 7585 u8 s;
7586 int rc;
fe98a52c 7587
ecf2a80a
HMH		 7588 if (!fan_control_allowed)
7589 return -EPERM;
7590
7646ea88 7591 if (mutex_lock_killable(&fan_mutex))
b21a15f6 7592 return -ERESTARTSYS;
fe98a52c 7593
b21a15f6
HMH		 7594 switch (fan_control_access_mode) {
7595 case TPACPI_FAN_WR_ACPI_FANS:
7596 case TPACPI_FAN_WR_TPEC:
7597 rc = fan_get_status(&s);
7598 if (rc < 0)
7599 break;
fe98a52c 7600
b21a15f6
HMH		 7601 /* Don't go out of emergency fan mode */
7602 if (s != 7) {
7603 s &= 0x07;
7604 s |= TP_EC_FAN_AUTO | 4; /* min fan speed 4 */
7605 }
fe98a52c 7606
b21a15f6
HMH		 7607 if (!acpi_ec_write(fan_status_offset, s))
7608 rc = -EIO;
7609 else {
7610 tp_features.fan_ctrl_status_undef = 0;
7611 rc = 0;
7612 }
7613 break;
fe98a52c 7614
b21a15f6
HMH		 7615 case TPACPI_FAN_WR_ACPI_SFAN:
7616 rc = fan_get_status(&s);
7617 if (rc < 0)
7618 break;
fe98a52c 7619
b21a15f6 7620 s &= 0x07;
fe98a52c 7621
b21a15f6
HMH		 7622 /* Set fan to at least level 4 */
7623 s |= 4;
fe08bc4b 7624
b21a15f6 7625 if (!acpi_evalf(sfan_handle, NULL, NULL, "vd", s))
35ff8b9f 7626 rc = -EIO;
b21a15f6
HMH		 7627 else
7628 rc = 0;
7629 break;
78f81cc4 7630
b21a15f6
HMH		 7631 default:
7632 rc = -ENXIO;
7633 }
5fba344c 7634
b21a15f6 7635 mutex_unlock(&fan_mutex);
74a60c0f
HMH		 7636
7637 if (!rc)
7638 vdbg_printk(TPACPI_DBG_FAN,
7639 "fan control: set fan control register to 0x%02x\n",
7640 s);
b21a15f6 7641 return rc;
69ba91cb 7642}
78f81cc4 7643
b21a15f6 7644static int fan_set_disable(void)
78f81cc4 7645{
b21a15f6 7646 int rc;
c52f0aa5 7647
b21a15f6
HMH		 7648 if (!fan_control_allowed)
7649 return -EPERM;
78f81cc4 7650
7646ea88 7651 if (mutex_lock_killable(&fan_mutex))
b21a15f6 7652 return -ERESTARTSYS;
3ef8a609 7653
b21a15f6
HMH		 7654 rc = 0;
7655 switch (fan_control_access_mode) {
7656 case TPACPI_FAN_WR_ACPI_FANS:
7657 case TPACPI_FAN_WR_TPEC:
7658 if (!acpi_ec_write(fan_status_offset, 0x00))
7659 rc = -EIO;
7660 else {
7661 fan_control_desired_level = 0;
7662 tp_features.fan_ctrl_status_undef = 0;
7663 }
3ef8a609
HMH		 7664 break;
7665
b21a15f6
HMH		 7666 case TPACPI_FAN_WR_ACPI_SFAN:
7667 if (!acpi_evalf(sfan_handle, NULL, NULL, "vd", 0x00))
7668 rc = -EIO;
7669 else
7670 fan_control_desired_level = 0;
c52f0aa5
HMH		 7671 break;
7672
7673 default:
b21a15f6 7674 rc = -ENXIO;
78f81cc4
BD		 7675 }
7676
74a60c0f
HMH		 7677 if (!rc)
7678 vdbg_printk(TPACPI_DBG_FAN,
7679 "fan control: set fan control register to 0\n");
fe98a52c 7680
fe98a52c 7681 mutex_unlock(&fan_mutex);
fe98a52c
HMH		 7682 return rc;
7683}
7684
b21a15f6 7685static int fan_set_speed(int speed)
c52f0aa5 7686{
b21a15f6 7687 int rc;
c52f0aa5 7688
b21a15f6
HMH		 7689 if (!fan_control_allowed)
7690 return -EPERM;
3ef8a609 7691
7646ea88 7692 if (mutex_lock_killable(&fan_mutex))
b21a15f6 7693 return -ERESTARTSYS;
c52f0aa5 7694
b21a15f6
HMH		 7695 rc = 0;
7696 switch (fan_control_access_mode) {
7697 case TPACPI_FAN_WR_ACPI_FANS:
7698 if (speed >= 0 && speed <= 65535) {
7699 if (!acpi_evalf(fans_handle, NULL, NULL, "vddd",
7700 speed, speed, speed))
7701 rc = -EIO;
7702 } else
7703 rc = -EINVAL;
c52f0aa5
HMH		 7704 break;
7705
7706 default:
b21a15f6 7707 rc = -ENXIO;
c52f0aa5
HMH		 7708 }
7709
b21a15f6
HMH		 7710 mutex_unlock(&fan_mutex);
7711 return rc;
16663a87
HMH		 7712}
7713
7714static void fan_watchdog_reset(void)
7715{
94954cc6 7716 static int fan_watchdog_active;
16663a87 7717
4985cd0a
HMH		 7718 if (fan_control_access_mode == TPACPI_FAN_WR_NONE)
7719 return;
7720
16663a87
HMH		 7721 if (fan_watchdog_active)
7722 cancel_delayed_work(&fan_watchdog_task);
7723
8fef502e
HMH		 7724 if (fan_watchdog_maxinterval > 0 &&
7725 tpacpi_lifecycle != TPACPI_LIFE_EXITING) {
16663a87 7726 fan_watchdog_active = 1;
e0e3c061 7727 if (!queue_delayed_work(tpacpi_wq, &fan_watchdog_task,
16663a87
HMH		 7728 msecs_to_jiffies(fan_watchdog_maxinterval
7729 * 1000))) {
35ff8b9f 7730 printk(TPACPI_ERR
e0e3c061 7731 "failed to queue the fan watchdog, "
16663a87
HMH		 7732 "watchdog will not trigger\n");
7733 }
7734 } else
7735 fan_watchdog_active = 0;
7736}
7737
b21a15f6 7738static void fan_watchdog_fire(struct work_struct *ignored)
78f81cc4 7739{
b21a15f6 7740 int rc;
18ad7996 7741
b21a15f6
HMH		 7742 if (tpacpi_lifecycle != TPACPI_LIFE_RUNNING)
7743 return;
a12095c2 7744
e0c7dfe7 7745 printk(TPACPI_NOTICE "fan watchdog: enabling fan\n");
b21a15f6
HMH		 7746 rc = fan_set_enable();
7747 if (rc < 0) {
e0c7dfe7 7748 printk(TPACPI_ERR "fan watchdog: error %d while enabling fan, "
b21a15f6
HMH		 7749 "will try again later...\n", -rc);
7750 /* reschedule for later */
7751 fan_watchdog_reset();
7752 }
7753}
eaa7571b 7754
b21a15f6
HMH		 7755/*
7756 * SYSFS fan layout: hwmon compatible (device)
7757 *
7758 * pwm*_enable:
7759 * 0: "disengaged" mode
7760 * 1: manual mode
7761 * 2: native EC "auto" mode (recommended, hardware default)
7762 *
7763 * pwm*: set speed in manual mode, ignored otherwise.
7764 * 0 is level 0; 255 is level 7. Intermediate points done with linear
7765 * interpolation.
7766 *
7767 * fan*_input: tachometer reading, RPM
7768 *
7769 *
7770 * SYSFS fan layout: extensions
7771 *
7772 * fan_watchdog (driver):
7773 * fan watchdog interval in seconds, 0 disables (default), max 120
7774 */
7775
7776/* sysfs fan pwm1_enable ----------------------------------------------- */
7777static ssize_t fan_pwm1_enable_show(struct device *dev,
7778 struct device_attribute *attr,
7779 char *buf)
7780{
7781 int res, mode;
7782 u8 status;
7783
7784 res = fan_get_status_safe(&status);
7785 if (res)
7786 return res;
7787
b21a15f6
HMH		 7788 if (status & TP_EC_FAN_FULLSPEED) {
7789 mode = 0;
7790 } else if (status & TP_EC_FAN_AUTO) {
7791 mode = 2;
7792 } else
7793 mode = 1;
7794
7795 return snprintf(buf, PAGE_SIZE, "%d\n", mode);
7796}
a12095c2 7797
b21a15f6
HMH		 7798static ssize_t fan_pwm1_enable_store(struct device *dev,
7799 struct device_attribute *attr,
7800 const char *buf, size_t count)
7801{
7802 unsigned long t;
7803 int res, level;
7804
7805 if (parse_strtoul(buf, 2, &t))
7806 return -EINVAL;
7807
74a60c0f
HMH		 7808 tpacpi_disclose_usertask("hwmon pwm1_enable",
7809 "set fan mode to %lu\n", t);
7810
b21a15f6
HMH		 7811 switch (t) {
7812 case 0:
7813 level = TP_EC_FAN_FULLSPEED;
7814 break;
7815 case 1:
7816 level = TPACPI_FAN_LAST_LEVEL;
7817 break;
7818 case 2:
7819 level = TP_EC_FAN_AUTO;
7820 break;
7821 case 3:
7822 /* reserved for software-controlled auto mode */
7823 return -ENOSYS;
18ad7996 7824 default:
b21a15f6 7825 return -EINVAL;
18ad7996 7826 }
b21a15f6
HMH		 7827
7828 res = fan_set_level_safe(level);
7829 if (res == -ENXIO)
7830 return -EINVAL;
7831 else if (res < 0)
7832 return res;
7833
7834 fan_watchdog_reset();
7835
7836 return count;
18ad7996
HMH		 7837}
7838
b21a15f6
HMH		 7839static struct device_attribute dev_attr_fan_pwm1_enable =
7840 __ATTR(pwm1_enable, S_IWUSR | S_IRUGO,
7841 fan_pwm1_enable_show, fan_pwm1_enable_store);
7842
7843/* sysfs fan pwm1 ------------------------------------------------------ */
7844static ssize_t fan_pwm1_show(struct device *dev,
7845 struct device_attribute *attr,
7846 char *buf)
fe98a52c 7847{
b21a15f6
HMH		 7848 int res;
7849 u8 status;
fe98a52c 7850
b21a15f6
HMH		 7851 res = fan_get_status_safe(&status);
7852 if (res)
7853 return res;
ecf2a80a 7854
b21a15f6
HMH		 7855 if ((status &
7856 (TP_EC_FAN_AUTO | TP_EC_FAN_FULLSPEED)) != 0)
7857 status = fan_control_desired_level;
fe98a52c 7858
b21a15f6
HMH		 7859 if (status > 7)
7860 status = 7;
fe98a52c 7861
b21a15f6 7862 return snprintf(buf, PAGE_SIZE, "%u\n", (status * 255) / 7);
fe98a52c
HMH		 7863}
7864
b21a15f6
HMH		 7865static ssize_t fan_pwm1_store(struct device *dev,
7866 struct device_attribute *attr,
7867 const char *buf, size_t count)
18ad7996 7868{
b21a15f6 7869 unsigned long s;
1c6a334e 7870 int rc;
b21a15f6 7871 u8 status, newlevel;
1c6a334e 7872
b21a15f6
HMH		 7873 if (parse_strtoul(buf, 255, &s))
7874 return -EINVAL;
7875
74a60c0f
HMH		 7876 tpacpi_disclose_usertask("hwmon pwm1",
7877 "set fan speed to %lu\n", s);
7878
b21a15f6
HMH		 7879 /* scale down from 0-255 to 0-7 */
7880 newlevel = (s >> 5) & 0x07;
ecf2a80a 7881
7646ea88 7882 if (mutex_lock_killable(&fan_mutex))
fc589a3c 7883 return -ERESTARTSYS;
40ca9fdf 7884
b21a15f6
HMH		 7885 rc = fan_get_status(&status);
7886 if (!rc && (status &
7887 (TP_EC_FAN_AUTO | TP_EC_FAN_FULLSPEED)) == 0) {
7888 rc = fan_set_level(newlevel);
7889 if (rc == -ENXIO)
7890 rc = -EINVAL;
7891 else if (!rc) {
7892 fan_update_desired_level(newlevel);
7893 fan_watchdog_reset();
eaa7571b 7894 }
b21a15f6 7895 }
1c6a334e 7896
b21a15f6
HMH		 7897 mutex_unlock(&fan_mutex);
7898 return (rc)? rc : count;
7899}
1c6a334e 7900
b21a15f6
HMH		 7901static struct device_attribute dev_attr_fan_pwm1 =
7902 __ATTR(pwm1, S_IWUSR | S_IRUGO,
7903 fan_pwm1_show, fan_pwm1_store);
1c6a334e 7904
b21a15f6
HMH		 7905/* sysfs fan fan1_input ------------------------------------------------ */
7906static ssize_t fan_fan1_input_show(struct device *dev,
7907 struct device_attribute *attr,
7908 char *buf)
7909{
7910 int res;
7911 unsigned int speed;
1c6a334e 7912
b21a15f6
HMH		 7913 res = fan_get_speed(&speed);
7914 if (res < 0)
7915 return res;
1c6a334e 7916
b21a15f6
HMH		 7917 return snprintf(buf, PAGE_SIZE, "%u\n", speed);
7918}
18ad7996 7919
b21a15f6
HMH		 7920static struct device_attribute dev_attr_fan_fan1_input =
7921 __ATTR(fan1_input, S_IRUGO,
7922 fan_fan1_input_show, NULL);
40ca9fdf 7923
d7377247
HMH		 7924/* sysfs fan fan2_input ------------------------------------------------ */
7925static ssize_t fan_fan2_input_show(struct device *dev,
7926 struct device_attribute *attr,
7927 char *buf)
7928{
7929 int res;
7930 unsigned int speed;
7931
7932 res = fan2_get_speed(&speed);
7933 if (res < 0)
7934 return res;
7935
7936 return snprintf(buf, PAGE_SIZE, "%u\n", speed);
7937}
7938
7939static struct device_attribute dev_attr_fan_fan2_input =
7940 __ATTR(fan2_input, S_IRUGO,
7941 fan_fan2_input_show, NULL);
7942
b21a15f6
HMH		 7943/* sysfs fan fan_watchdog (hwmon driver) ------------------------------- */
7944static ssize_t fan_fan_watchdog_show(struct device_driver *drv,
7945 char *buf)
7946{
7947 return snprintf(buf, PAGE_SIZE, "%u\n", fan_watchdog_maxinterval);
18ad7996
HMH		 7948}
7949
b21a15f6
HMH		 7950static ssize_t fan_fan_watchdog_store(struct device_driver *drv,
7951 const char *buf, size_t count)
18ad7996 7952{
b21a15f6
HMH		 7953 unsigned long t;
7954
7955 if (parse_strtoul(buf, 120, &t))
7956 return -EINVAL;
40ca9fdf 7957
ecf2a80a
HMH		 7958 if (!fan_control_allowed)
7959 return -EPERM;
7960
b21a15f6
HMH		 7961 fan_watchdog_maxinterval = t;
7962 fan_watchdog_reset();
40ca9fdf 7963
74a60c0f
HMH		 7964 tpacpi_disclose_usertask("fan_watchdog", "set to %lu\n", t);
7965
b21a15f6
HMH		 7966 return count;
7967}
7968
7969static DRIVER_ATTR(fan_watchdog, S_IWUSR | S_IRUGO,
7970 fan_fan_watchdog_show, fan_fan_watchdog_store);
7971
7972/* --------------------------------------------------------------------- */
7973static struct attribute *fan_attributes[] = {
7974 &dev_attr_fan_pwm1_enable.attr, &dev_attr_fan_pwm1.attr,
7975 &dev_attr_fan_fan1_input.attr,
d7377247 7976 NULL, /* for fan2_input */
b21a15f6
HMH		 7977 NULL
7978};
7979
7980static const struct attribute_group fan_attr_group = {
7981 .attrs = fan_attributes,
7982};
7983
d7377247
HMH		 7984#define TPACPI_FAN_Q1 0x0001 /* Unitialized HFSP */
7985#define TPACPI_FAN_2FAN 0x0002 /* EC 0x31 bit 0 selects fan2 */
7d95a3d5
HMH		 7986
7987#define TPACPI_FAN_QI(__id1, __id2, __quirks) \
7988 { .vendor = PCI_VENDOR_ID_IBM, \
7989 .bios = TPACPI_MATCH_ANY, \
7990 .ec = TPID(__id1, __id2), \
7991 .quirks = __quirks }
7992
d7377247
HMH		 7993#define TPACPI_FAN_QL(__id1, __id2, __quirks) \
7994 { .vendor = PCI_VENDOR_ID_LENOVO, \
7995 .bios = TPACPI_MATCH_ANY, \
7996 .ec = TPID(__id1, __id2), \
7997 .quirks = __quirks }
7998
7d95a3d5
HMH		 7999static const struct tpacpi_quirk fan_quirk_table[] __initconst = {
8000 TPACPI_FAN_QI('1', 'Y', TPACPI_FAN_Q1),
8001 TPACPI_FAN_QI('7', '8', TPACPI_FAN_Q1),
8002 TPACPI_FAN_QI('7', '6', TPACPI_FAN_Q1),
8003 TPACPI_FAN_QI('7', '0', TPACPI_FAN_Q1),
d7377247 8004 TPACPI_FAN_QL('7', 'M', TPACPI_FAN_2FAN),
7d95a3d5
HMH		 8005};
8006
d7377247 8007#undef TPACPI_FAN_QL
7d95a3d5
HMH		 8008#undef TPACPI_FAN_QI
8009
b21a15f6
HMH		 8010static int __init fan_init(struct ibm_init_struct *iibm)
8011{
8012 int rc;
7d95a3d5 8013 unsigned long quirks;
b21a15f6 8014
74a60c0f
HMH		 8015 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_FAN,
8016 "initializing fan subdriver\n");
b21a15f6
HMH		 8017
8018 mutex_init(&fan_mutex);
8019 fan_status_access_mode = TPACPI_FAN_NONE;
8020 fan_control_access_mode = TPACPI_FAN_WR_NONE;
8021 fan_control_commands = 0;
8022 fan_watchdog_maxinterval = 0;
8023 tp_features.fan_ctrl_status_undef = 0;
d7377247 8024 tp_features.second_fan = 0;
b21a15f6
HMH		 8025 fan_control_desired_level = 7;
8026
e28393c0
HMH		 8027 if (tpacpi_is_ibm()) {
8028 TPACPI_ACPIHANDLE_INIT(fans);
8029 TPACPI_ACPIHANDLE_INIT(gfan);
8030 TPACPI_ACPIHANDLE_INIT(sfan);
8031 }
b21a15f6 8032
7d95a3d5
HMH		 8033 quirks = tpacpi_check_quirks(fan_quirk_table,
8034 ARRAY_SIZE(fan_quirk_table));
8035
b21a15f6
HMH		 8036 if (gfan_handle) {
8037 /* 570, 600e/x, 770e, 770x */
8038 fan_status_access_mode = TPACPI_FAN_RD_ACPI_GFAN;
8039 } else {
8040 /* all other ThinkPads: note that even old-style
8041 * ThinkPad ECs supports the fan control register */
8042 if (likely(acpi_ec_read(fan_status_offset,
8043 &fan_control_initial_status))) {
8044 fan_status_access_mode = TPACPI_FAN_RD_TPEC;
7d95a3d5
HMH		 8045 if (quirks & TPACPI_FAN_Q1)
8046 fan_quirk1_setup();
d7377247
HMH		 8047 if (quirks & TPACPI_FAN_2FAN) {
8048 tp_features.second_fan = 1;
8049 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_FAN,
8050 "secondary fan support enabled\n");
8051 }
b21a15f6 8052 } else {
e0c7dfe7 8053 printk(TPACPI_ERR
b21a15f6
HMH		 8054 "ThinkPad ACPI EC access misbehaving, "
8055 "fan status and control unavailable\n");
8056 return 1;
8057 }
8058 }
8059
8060 if (sfan_handle) {
8061 /* 570, 770x-JL */
8062 fan_control_access_mode = TPACPI_FAN_WR_ACPI_SFAN;
8063 fan_control_commands |=
8064 TPACPI_FAN_CMD_LEVEL | TPACPI_FAN_CMD_ENABLE;
8065 } else {
8066 if (!gfan_handle) {
8067 /* gfan without sfan means no fan control */
8068 /* all other models implement TP EC 0x2f control */
8069
8070 if (fans_handle) {
8071 /* X31, X40, X41 */
8072 fan_control_access_mode =
8073 TPACPI_FAN_WR_ACPI_FANS;
8074 fan_control_commands |=
8075 TPACPI_FAN_CMD_SPEED |
8076 TPACPI_FAN_CMD_LEVEL |
8077 TPACPI_FAN_CMD_ENABLE;
8078 } else {
8079 fan_control_access_mode = TPACPI_FAN_WR_TPEC;
8080 fan_control_commands |=
8081 TPACPI_FAN_CMD_LEVEL |
8082 TPACPI_FAN_CMD_ENABLE;
8083 }
fe98a52c 8084 }
b21a15f6 8085 }
18ad7996 8086
74a60c0f
HMH		 8087 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_FAN,
8088 "fan is %s, modes %d, %d\n",
b21a15f6
HMH		 8089 str_supported(fan_status_access_mode != TPACPI_FAN_NONE ||
8090 fan_control_access_mode != TPACPI_FAN_WR_NONE),
8091 fan_status_access_mode, fan_control_access_mode);
1c6a334e 8092
b21a15f6
HMH		 8093 /* fan control master switch */
8094 if (!fan_control_allowed) {
8095 fan_control_access_mode = TPACPI_FAN_WR_NONE;
8096 fan_control_commands = 0;
74a60c0f 8097 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_FAN,
b21a15f6 8098 "fan control features disabled by parameter\n");
18ad7996 8099 }
40ca9fdf 8100
b21a15f6
HMH		 8101 /* update fan_control_desired_level */
8102 if (fan_status_access_mode != TPACPI_FAN_NONE)
8103 fan_get_status_safe(NULL);
fe98a52c 8104
b21a15f6
HMH		 8105 if (fan_status_access_mode != TPACPI_FAN_NONE ||
8106 fan_control_access_mode != TPACPI_FAN_WR_NONE) {
d7377247
HMH		 8107 if (tp_features.second_fan) {
8108 /* attach second fan tachometer */
8109 fan_attributes[ARRAY_SIZE(fan_attributes)-2] =
8110 &dev_attr_fan_fan2_input.attr;
8111 }
b21a15f6
HMH		 8112 rc = sysfs_create_group(&tpacpi_sensors_pdev->dev.kobj,
8113 &fan_attr_group);
b21a15f6
HMH		 8114 if (rc < 0)
8115 return rc;
9c0a76e1
HMH		 8116
8117 rc = driver_create_file(&tpacpi_hwmon_pdriver.driver,
8118 &driver_attr_fan_watchdog);
8119 if (rc < 0) {
8120 sysfs_remove_group(&tpacpi_sensors_pdev->dev.kobj,
8121 &fan_attr_group);
8122 return rc;
8123 }
b21a15f6
HMH		 8124 return 0;
8125 } else
8126 return 1;
56b6aeb0
HMH		 8127}
8128
b21a15f6 8129static void fan_exit(void)
56b6aeb0 8130{
74a60c0f 8131 vdbg_printk(TPACPI_DBG_EXIT | TPACPI_DBG_FAN,
35ff8b9f 8132 "cancelling any pending fan watchdog tasks\n");
56b6aeb0 8133
b21a15f6
HMH		 8134 /* FIXME: can we really do this unconditionally? */
8135 sysfs_remove_group(&tpacpi_sensors_pdev->dev.kobj, &fan_attr_group);
35ff8b9f
HMH		 8136 driver_remove_file(&tpacpi_hwmon_pdriver.driver,
8137 &driver_attr_fan_watchdog);
40ca9fdf 8138
b21a15f6 8139 cancel_delayed_work(&fan_watchdog_task);
e0e3c061 8140 flush_workqueue(tpacpi_wq);
56b6aeb0
HMH		 8141}
8142
75700e53
HMH		 8143static void fan_suspend(pm_message_t state)
8144{
0081b162
HMH		 8145 int rc;
8146
75700e53
HMH		 8147 if (!fan_control_allowed)
8148 return;
8149
8150 /* Store fan status in cache */
0081b162
HMH		 8151 fan_control_resume_level = 0;
8152 rc = fan_get_status_safe(&fan_control_resume_level);
8153 if (rc < 0)
8154 printk(TPACPI_NOTICE
8155 "failed to read fan level for later "
8156 "restore during resume: %d\n", rc);
8157
8158 /* if it is undefined, don't attempt to restore it.
8159 * KEEP THIS LAST */
75700e53 8160 if (tp_features.fan_ctrl_status_undef)
0081b162 8161 fan_control_resume_level = 0;
75700e53
HMH		 8162}
8163
8164static void fan_resume(void)
8165{
75700e53
HMH		 8166 u8 current_level = 7;
8167 bool do_set = false;
0081b162 8168 int rc;
75700e53
HMH		 8169
8170 /* DSDT *always* updates status on resume */
8171 tp_features.fan_ctrl_status_undef = 0;
8172
75700e53 8173 if (!fan_control_allowed ||
0081b162 8174 !fan_control_resume_level ||
75700e53
HMH		 8175 (fan_get_status_safe(&current_level) < 0))
8176 return;
8177
8178 switch (fan_control_access_mode) {
8179 case TPACPI_FAN_WR_ACPI_SFAN:
0081b162
HMH		 8180 /* never decrease fan level */
8181 do_set = (fan_control_resume_level > current_level);
75700e53
HMH		 8182 break;
8183 case TPACPI_FAN_WR_ACPI_FANS:
8184 case TPACPI_FAN_WR_TPEC:
0081b162
HMH		 8185 /* never decrease fan level, scale is:
8186 * TP_EC_FAN_FULLSPEED > 7 >= TP_EC_FAN_AUTO
8187 *
8188 * We expect the firmware to set either 7 or AUTO, but we
8189 * handle FULLSPEED out of paranoia.
8190 *
8191 * So, we can safely only restore FULLSPEED or 7, anything
8192 * else could slow the fan. Restoring AUTO is useless, at
8193 * best that's exactly what the DSDT already set (it is the
8194 * slower it uses).
8195 *
8196 * Always keep in mind that the DSDT *will* have set the
8197 * fans to what the vendor supposes is the best level. We
8198 * muck with it only to speed the fan up.
8199 */
8200 if (fan_control_resume_level != 7 &&
8201 !(fan_control_resume_level & TP_EC_FAN_FULLSPEED))
8202 return;
8203 else
8204 do_set = !(current_level & TP_EC_FAN_FULLSPEED) &&
8205 (current_level != fan_control_resume_level);
75700e53
HMH		 8206 break;
8207 default:
8208 return;
8209 }
8210 if (do_set) {
8211 printk(TPACPI_NOTICE
8212 "restoring fan level to 0x%02x\n",
0081b162
HMH		 8213 fan_control_resume_level);
8214 rc = fan_set_level_safe(fan_control_resume_level);
8215 if (rc < 0)
8216 printk(TPACPI_NOTICE
8217 "failed to restore fan level: %d\n", rc);
75700e53
HMH		 8218 }
8219}
8220
887965e6 8221static int fan_read(struct seq_file *m)
56b6aeb0 8222{
56b6aeb0
HMH		 8223 int rc;
8224 u8 status;
8225 unsigned int speed = 0;
8226
8227 switch (fan_status_access_mode) {
efa27145 8228 case TPACPI_FAN_RD_ACPI_GFAN:
56b6aeb0 8229 /* 570, 600e/x, 770e, 770x */
35ff8b9f
HMH		 8230 rc = fan_get_status_safe(&status);
8231 if (rc < 0)
56b6aeb0
HMH		 8232 return rc;
8233
887965e6 8234 seq_printf(m, "status:\t\t%s\n"
56b6aeb0
HMH		 8235 "level:\t\t%d\n",
8236 (status != 0) ? "enabled" : "disabled", status);
8237 break;
8238
efa27145 8239 case TPACPI_FAN_RD_TPEC:
56b6aeb0 8240 /* all except 570, 600e/x, 770e, 770x */
35ff8b9f
HMH		 8241 rc = fan_get_status_safe(&status);
8242 if (rc < 0)
56b6aeb0
HMH		 8243 return rc;
8244
887965e6 8245 seq_printf(m, "status:\t\t%s\n",
56b6aeb0
HMH		 8246 (status != 0) ? "enabled" : "disabled");
8247
35ff8b9f
HMH		 8248 rc = fan_get_speed(&speed);
8249 if (rc < 0)
56b6aeb0
HMH		 8250 return rc;
8251
887965e6 8252 seq_printf(m, "speed:\t\t%d\n", speed);
56b6aeb0 8253
efa27145 8254 if (status & TP_EC_FAN_FULLSPEED)
56b6aeb0 8255 /* Disengaged mode takes precedence */
887965e6 8256 seq_printf(m, "level:\t\tdisengaged\n");
efa27145 8257 else if (status & TP_EC_FAN_AUTO)
887965e6 8258 seq_printf(m, "level:\t\tauto\n");
56b6aeb0 8259 else
887965e6 8260 seq_printf(m, "level:\t\t%d\n", status);
56b6aeb0
HMH		 8261 break;
8262
efa27145 8263 case TPACPI_FAN_NONE:
56b6aeb0 8264 default:
887965e6 8265 seq_printf(m, "status:\t\tnot supported\n");
56b6aeb0
HMH		 8266 }
8267
efa27145 8268 if (fan_control_commands & TPACPI_FAN_CMD_LEVEL) {
887965e6 8269 seq_printf(m, "commands:\tlevel <level>");
56b6aeb0
HMH		 8270
8271 switch (fan_control_access_mode) {
efa27145 8272 case TPACPI_FAN_WR_ACPI_SFAN:
887965e6 8273 seq_printf(m, " (<level> is 0-7)\n");
56b6aeb0
HMH		 8274 break;
8275
8276 default:
887965e6 8277 seq_printf(m, " (<level> is 0-7, "
fe98a52c 8278 "auto, disengaged, full-speed)\n");
56b6aeb0
HMH		 8279 break;
8280 }
8281 }
18ad7996 8282
efa27145 8283 if (fan_control_commands & TPACPI_FAN_CMD_ENABLE)
887965e6 8284 seq_printf(m, "commands:\tenable, disable\n"
35ff8b9f
HMH		 8285 "commands:\twatchdog <timeout> (<timeout> "
8286 "is 0 (off), 1-120 (seconds))\n");
1da177e4 8287
efa27145 8288 if (fan_control_commands & TPACPI_FAN_CMD_SPEED)
887965e6 8289 seq_printf(m, "commands:\tspeed <speed>"
56b6aeb0
HMH		 8290 " (<speed> is 0-65535)\n");
8291
887965e6 8292 return 0;
78f81cc4
BD		 8293}
8294
18ad7996
HMH		 8295static int fan_write_cmd_level(const char *cmd, int *rc)
8296{
8297 int level;
8298
a12095c2 8299 if (strlencmp(cmd, "level auto") == 0)
efa27145 8300 level = TP_EC_FAN_AUTO;
fe98a52c 8301 else if ((strlencmp(cmd, "level disengaged") == 0) |
35ff8b9f 8302 (strlencmp(cmd, "level full-speed") == 0))
efa27145 8303 level = TP_EC_FAN_FULLSPEED;
a12095c2 8304 else if (sscanf(cmd, "level %d", &level) != 1)
18ad7996
HMH		 8305 return 0;
8306
35ff8b9f
HMH		 8307 *rc = fan_set_level_safe(level);
8308 if (*rc == -ENXIO)
e0c7dfe7 8309 printk(TPACPI_ERR "level command accepted for unsupported "
18ad7996 8310 "access mode %d", fan_control_access_mode);
74a60c0f
HMH		 8311 else if (!*rc)
8312 tpacpi_disclose_usertask("procfs fan",
8313 "set level to %d\n", level);
18ad7996
HMH		 8314
8315 return 1;
8316}
8317
8318static int fan_write_cmd_enable(const char *cmd, int *rc)
8319{
8320 if (strlencmp(cmd, "enable") != 0)
8321 return 0;
8322
35ff8b9f
HMH		 8323 *rc = fan_set_enable();
8324 if (*rc == -ENXIO)
e0c7dfe7 8325 printk(TPACPI_ERR "enable command accepted for unsupported "
18ad7996 8326 "access mode %d", fan_control_access_mode);
74a60c0f
HMH		 8327 else if (!*rc)
8328 tpacpi_disclose_usertask("procfs fan", "enable\n");
18ad7996
HMH		 8329
8330 return 1;
8331}
8332
8333static int fan_write_cmd_disable(const char *cmd, int *rc)
8334{
8335 if (strlencmp(cmd, "disable") != 0)
8336 return 0;
8337
35ff8b9f
HMH		 8338 *rc = fan_set_disable();
8339 if (*rc == -ENXIO)
e0c7dfe7 8340 printk(TPACPI_ERR "disable command accepted for unsupported "
18ad7996 8341 "access mode %d", fan_control_access_mode);
74a60c0f
HMH		 8342 else if (!*rc)
8343 tpacpi_disclose_usertask("procfs fan", "disable\n");
18ad7996
HMH		 8344
8345 return 1;
8346}
8347
8348static int fan_write_cmd_speed(const char *cmd, int *rc)
8349{
8350 int speed;
8351
a8b7a662
HMH		 8352 /* TODO:
8353 * Support speed <low> <medium> <high> ? */
8354
18ad7996
HMH		 8355 if (sscanf(cmd, "speed %d", &speed) != 1)
8356 return 0;
8357
35ff8b9f
HMH		 8358 *rc = fan_set_speed(speed);
8359 if (*rc == -ENXIO)
e0c7dfe7 8360 printk(TPACPI_ERR "speed command accepted for unsupported "
18ad7996 8361 "access mode %d", fan_control_access_mode);
74a60c0f
HMH		 8362 else if (!*rc)
8363 tpacpi_disclose_usertask("procfs fan",
8364 "set speed to %d\n", speed);
18ad7996
HMH		 8365
8366 return 1;
8367}
8368
16663a87
HMH		 8369static int fan_write_cmd_watchdog(const char *cmd, int *rc)
8370{
8371 int interval;
8372
8373 if (sscanf(cmd, "watchdog %d", &interval) != 1)
8374 return 0;
8375
8376 if (interval < 0 || interval > 120)
8377 *rc = -EINVAL;
74a60c0f 8378 else {
16663a87 8379 fan_watchdog_maxinterval = interval;
74a60c0f
HMH		 8380 tpacpi_disclose_usertask("procfs fan",
8381 "set watchdog timer to %d\n",
8382 interval);
8383 }
16663a87
HMH		 8384
8385 return 1;
8386}
8387
18ad7996
HMH		 8388static int fan_write(char *buf)
8389{
8390 char *cmd;
8391 int rc = 0;
8392
8393 while (!rc && (cmd = next_cmd(&buf))) {
efa27145 8394 if (!((fan_control_commands & TPACPI_FAN_CMD_LEVEL) &&
18ad7996 8395 fan_write_cmd_level(cmd, &rc)) &&
efa27145 8396 !((fan_control_commands & TPACPI_FAN_CMD_ENABLE) &&
18ad7996 8397 (fan_write_cmd_enable(cmd, &rc) ||
16663a87
HMH		 8398 fan_write_cmd_disable(cmd, &rc) ||
8399 fan_write_cmd_watchdog(cmd, &rc))) &&
efa27145 8400 !((fan_control_commands & TPACPI_FAN_CMD_SPEED) &&
18ad7996
HMH		 8401 fan_write_cmd_speed(cmd, &rc))
8402 )
8403 rc = -EINVAL;
16663a87
HMH		 8404 else if (!rc)
8405 fan_watchdog_reset();
18ad7996
HMH		 8406 }
8407
8408 return rc;
8409}
8410
a5763f22
HMH		 8411static struct ibm_struct fan_driver_data = {
8412 .name = "fan",
8413 .read = fan_read,
8414 .write = fan_write,
8415 .exit = fan_exit,
75700e53
HMH		 8416 .suspend = fan_suspend,
8417 .resume = fan_resume,
a5763f22
HMH		 8418};
8419
56b6aeb0
HMH		 8420/****************************************************************************
8421 ****************************************************************************
8422 *
8423 * Infrastructure
8424 *
8425 ****************************************************************************
8426 ****************************************************************************/
8427
8b468c0c
HMH		 8428/*
8429 * HKEY event callout for other subdrivers go here
8430 * (yes, it is ugly, but it is quick, safe, and gets the job done
8431 */
8432static void tpacpi_driver_event(const unsigned int hkey_event)
8433{
347a2686
HMH		 8434 if (ibm_backlight_device) {
8435 switch (hkey_event) {
8436 case TP_HKEY_EV_BRGHT_UP:
8437 case TP_HKEY_EV_BRGHT_DOWN:
8438 tpacpi_brightness_notify_change();
8439 }
8440 }
0d204c34
HMH		 8441 if (alsa_card) {
8442 switch (hkey_event) {
8443 case TP_HKEY_EV_VOL_UP:
8444 case TP_HKEY_EV_VOL_DOWN:
8445 case TP_HKEY_EV_VOL_MUTE:
8446 volume_alsa_notify_change();
8447 }
8448 }
8b468c0c
HMH		 8449}
8450
8b468c0c
HMH		 8451static void hotkey_driver_event(const unsigned int scancode)
8452{
67bcae6e 8453 tpacpi_driver_event(TP_HKEY_EV_HOTKEY_BASE + scancode);
8b468c0c
HMH		 8454}
8455
7fd40029
HMH		 8456/* sysfs name ---------------------------------------------------------- */
8457static ssize_t thinkpad_acpi_pdev_name_show(struct device *dev,
8458 struct device_attribute *attr,
8459 char *buf)
8460{
e0c7dfe7 8461 return snprintf(buf, PAGE_SIZE, "%s\n", TPACPI_NAME);
7fd40029
HMH		 8462}
8463
8464static struct device_attribute dev_attr_thinkpad_acpi_pdev_name =
8465 __ATTR(name, S_IRUGO, thinkpad_acpi_pdev_name_show, NULL);
8466
8467/* --------------------------------------------------------------------- */
8468
56b6aeb0 8469/* /proc support */
94954cc6 8470static struct proc_dir_entry *proc_dir;
16663a87 8471
56b6aeb0
HMH		 8472/*
8473 * Module and infrastructure proble, init and exit handling
8474 */
1da177e4 8475
b21a15f6
HMH		 8476static int force_load;
8477
fe08bc4b 8478#ifdef CONFIG_THINKPAD_ACPI_DEBUG
a5763f22 8479static const char * __init str_supported(int is_supported)
fe08bc4b 8480{
a5763f22 8481 static char text_unsupported[] __initdata = "not supported";
fe08bc4b 8482
a5763f22 8483 return (is_supported)? &text_unsupported[4] : &text_unsupported[0];
fe08bc4b
HMH		 8484}
8485#endif /* CONFIG_THINKPAD_ACPI_DEBUG */
8486
b21a15f6
HMH		 8487static void ibm_exit(struct ibm_struct *ibm)
8488{
8489 dbg_printk(TPACPI_DBG_EXIT, "removing %s\n", ibm->name);
8490
8491 list_del_init(&ibm->all_drivers);
8492
8493 if (ibm->flags.acpi_notify_installed) {
8494 dbg_printk(TPACPI_DBG_EXIT,
8495 "%s: acpi_remove_notify_handler\n", ibm->name);
8496 BUG_ON(!ibm->acpi);
8497 acpi_remove_notify_handler(*ibm->acpi->handle,
8498 ibm->acpi->type,
8499 dispatch_acpi_notify);
8500 ibm->flags.acpi_notify_installed = 0;
b21a15f6
HMH		 8501 }
8502
8503 if (ibm->flags.proc_created) {
8504 dbg_printk(TPACPI_DBG_EXIT,
8505 "%s: remove_proc_entry\n", ibm->name);
8506 remove_proc_entry(ibm->name, proc_dir);
8507 ibm->flags.proc_created = 0;
8508 }
8509
8510 if (ibm->flags.acpi_driver_registered) {
8511 dbg_printk(TPACPI_DBG_EXIT,
8512 "%s: acpi_bus_unregister_driver\n", ibm->name);
8513 BUG_ON(!ibm->acpi);
8514 acpi_bus_unregister_driver(ibm->acpi->driver);
8515 kfree(ibm->acpi->driver);
8516 ibm->acpi->driver = NULL;
8517 ibm->flags.acpi_driver_registered = 0;
8518 }
8519
8520 if (ibm->flags.init_called && ibm->exit) {
8521 ibm->exit();
8522 ibm->flags.init_called = 0;
8523 }
8524
8525 dbg_printk(TPACPI_DBG_INIT, "finished removing %s\n", ibm->name);
8526}
f74a27d4 8527
a5763f22 8528static int __init ibm_init(struct ibm_init_struct *iibm)
1da177e4
LT		 8529{
8530 int ret;
a5763f22 8531 struct ibm_struct *ibm = iibm->data;
1da177e4
LT		 8532 struct proc_dir_entry *entry;
8533
a5763f22
HMH		 8534 BUG_ON(ibm == NULL);
8535
8536 INIT_LIST_HEAD(&ibm->all_drivers);
8537
92641177 8538 if (ibm->flags.experimental && !experimental)
1da177e4
LT		 8539 return 0;
8540
fe08bc4b
HMH		 8541 dbg_printk(TPACPI_DBG_INIT,
8542 "probing for %s\n", ibm->name);
8543
a5763f22
HMH		 8544 if (iibm->init) {
8545 ret = iibm->init(iibm);
5fba344c
HMH		 8546 if (ret > 0)
8547 return 0; /* probe failed */
8548 if (ret)
1da177e4 8549 return ret;
a5763f22 8550
92641177 8551 ibm->flags.init_called = 1;
1da177e4
LT		 8552 }
8553
8d376cd6
HMH		 8554 if (ibm->acpi) {
8555 if (ibm->acpi->hid) {
8556 ret = register_tpacpi_subdriver(ibm);
8557 if (ret)
8558 goto err_out;
8559 }
5fba344c 8560
8d376cd6
HMH		 8561 if (ibm->acpi->notify) {
8562 ret = setup_acpi_notify(ibm);
8563 if (ret == -ENODEV) {
e0c7dfe7 8564 printk(TPACPI_NOTICE "disabling subdriver %s\n",
8d376cd6
HMH		 8565 ibm->name);
8566 ret = 0;
8567 goto err_out;
8568 }
8569 if (ret < 0)
8570 goto err_out;
5fba344c 8571 }
5fba344c
HMH		 8572 }
8573
fe08bc4b
HMH		 8574 dbg_printk(TPACPI_DBG_INIT,
8575 "%s installed\n", ibm->name);
8576
78f81cc4 8577 if (ibm->read) {
b525c06c 8578 mode_t mode = iibm->base_procfs_mode;
887965e6 8579
b525c06c
HMH		 8580 if (!mode)
8581 mode = S_IRUGO;
887965e6
AD		 8582 if (ibm->write)
8583 mode |= S_IWUSR;
8584 entry = proc_create_data(ibm->name, mode, proc_dir,
8585 &dispatch_proc_fops, ibm);
78f81cc4 8586 if (!entry) {
e0c7dfe7 8587 printk(TPACPI_ERR "unable to create proc entry %s\n",
78f81cc4 8588 ibm->name);
5fba344c
HMH		 8589 ret = -ENODEV;
8590 goto err_out;
78f81cc4 8591 }
92641177 8592 ibm->flags.proc_created = 1;
78f81cc4 8593 }
1da177e4 8594
a5763f22
HMH		 8595 list_add_tail(&ibm->all_drivers, &tpacpi_all_drivers);
8596
1da177e4 8597 return 0;
5fba344c
HMH		 8598
8599err_out:
fe08bc4b
HMH		 8600 dbg_printk(TPACPI_DBG_INIT,
8601 "%s: at error exit path with result %d\n",
8602 ibm->name, ret);
8603
5fba344c
HMH		 8604 ibm_exit(ibm);
8605 return (ret < 0)? ret : 0;
1da177e4
LT		 8606}
8607
56b6aeb0
HMH		 8608/* Probing */
8609
050df107
HMH		 8610static bool __pure __init tpacpi_is_fw_digit(const char c)
8611{
8612 return (c >= '0' && c <= '9') || (c >= 'A' && c <= 'Z');
8613}
8614
8615/* Most models: xxyTkkWW (#.##c); Ancient 570/600 and -SL lacks (#.##c) */
8616static bool __pure __init tpacpi_is_valid_fw_id(const char* const s,
8617 const char t)
8618{
8619 return s && strlen(s) >= 8 &&
8620 tpacpi_is_fw_digit(s[0]) &&
8621 tpacpi_is_fw_digit(s[1]) &&
8622 s[2] == t && s[3] == 'T' &&
8623 tpacpi_is_fw_digit(s[4]) &&
8624 tpacpi_is_fw_digit(s[5]) &&
8625 s[6] == 'W' && s[7] == 'W';
8626}
8627
bf20e740
HMH		 8628/* returns 0 - probe ok, or < 0 - probe error.
8629 * Probe ok doesn't mean thinkpad found.
8630 * On error, kfree() cleanup on tp->* is not performed, caller must do it */
8631static int __must_check __init get_thinkpad_model_data(
8632 struct thinkpad_id_data *tp)
1da177e4 8633{
1855256c 8634 const struct dmi_device *dev = NULL;
56b6aeb0 8635 char ec_fw_string[18];
bf20e740 8636 char const *s;
1da177e4 8637
d5a2f2f1 8638 if (!tp)
bf20e740 8639 return -EINVAL;
d5a2f2f1
HMH		 8640
8641 memset(tp, 0, sizeof(*tp));
8642
8643 if (dmi_name_in_vendors("IBM"))
8644 tp->vendor = PCI_VENDOR_ID_IBM;
8645 else if (dmi_name_in_vendors("LENOVO"))
8646 tp->vendor = PCI_VENDOR_ID_LENOVO;
8647 else
bf20e740 8648 return 0;
d5a2f2f1 8649
bf20e740
HMH		 8650 s = dmi_get_system_info(DMI_BIOS_VERSION);
8651 tp->bios_version_str = kstrdup(s, GFP_KERNEL);
8652 if (s && !tp->bios_version_str)
8653 return -ENOMEM;
050df107
HMH		 8654
8655 /* Really ancient ThinkPad 240X will fail this, which is fine */
8656 if (!tpacpi_is_valid_fw_id(tp->bios_version_str, 'E'))
bf20e740 8657 return 0;
050df107 8658
d5a2f2f1
HMH		 8659 tp->bios_model = tp->bios_version_str[0]
8660 | (tp->bios_version_str[1] << 8);
050df107
HMH		 8661 tp->bios_release = (tp->bios_version_str[4] << 8)
8662 | tp->bios_version_str[5];
d5a2f2f1 8663
56b6aeb0
HMH		 8664 /*
8665 * ThinkPad T23 or newer, A31 or newer, R50e or newer,
8666 * X32 or newer, all Z series; Some models must have an
8667 * up-to-date BIOS or they will not be detected.
8668 *
8669 * See http://thinkwiki.org/wiki/List_of_DMI_IDs
8670 */
8671 while ((dev = dmi_find_device(DMI_DEV_TYPE_OEM_STRING, NULL, dev))) {
8672 if (sscanf(dev->name,
8673 "IBM ThinkPad Embedded Controller -[%17c",
8674 ec_fw_string) == 1) {
8675 ec_fw_string[sizeof(ec_fw_string) - 1] = 0;
8676 ec_fw_string[strcspn(ec_fw_string, " ]")] = 0;
d5a2f2f1
HMH		 8677
8678 tp->ec_version_str = kstrdup(ec_fw_string, GFP_KERNEL);
bf20e740
HMH		 8679 if (!tp->ec_version_str)
8680 return -ENOMEM;
050df107
HMH		 8681
8682 if (tpacpi_is_valid_fw_id(ec_fw_string, 'H')) {
8683 tp->ec_model = ec_fw_string[0]
8684 | (ec_fw_string[1] << 8);
8685 tp->ec_release = (ec_fw_string[4] << 8)
8686 | ec_fw_string[5];
8687 } else {
8688 printk(TPACPI_NOTICE
8689 "ThinkPad firmware release %s "
8690 "doesn't match the known patterns\n",
8691 ec_fw_string);
8692 printk(TPACPI_NOTICE
8693 "please report this to %s\n",
8694 TPACPI_MAIL);
8695 }
d5a2f2f1 8696 break;
78f81cc4 8697 }
1da177e4 8698 }
d5a2f2f1 8699
bf20e740
HMH		 8700 s = dmi_get_system_info(DMI_PRODUCT_VERSION);
8701 if (s && !strnicmp(s, "ThinkPad", 8)) {
8702 tp->model_str = kstrdup(s, GFP_KERNEL);
8703 if (!tp->model_str)
8704 return -ENOMEM;
d5a2f2f1 8705 }
8c74adbc 8706
bf20e740
HMH		 8707 s = dmi_get_system_info(DMI_PRODUCT_NAME);
8708 tp->nummodel_str = kstrdup(s, GFP_KERNEL);
8709 if (s && !tp->nummodel_str)
8710 return -ENOMEM;
8711
8712 return 0;
1da177e4
LT		 8713}
8714
5fba344c
HMH		 8715static int __init probe_for_thinkpad(void)
8716{
8717 int is_thinkpad;
8718
8719 if (acpi_disabled)
8720 return -ENODEV;
8721
e28393c0
HMH		 8722 /* It would be dangerous to run the driver in this case */
8723 if (!tpacpi_is_ibm() && !tpacpi_is_lenovo())
8724 return -ENODEV;
8725
5fba344c
HMH		 8726 /*
8727 * Non-ancient models have better DMI tagging, but very old models
e675abaf 8728 * don't. tpacpi_is_fw_known() is a cheat to help in that case.
5fba344c 8729 */
e675abaf
HMH		 8730 is_thinkpad = (thinkpad_id.model_str != NULL) ||
8731 (thinkpad_id.ec_model != 0) ||
8732 tpacpi_is_fw_known();
5fba344c 8733
437e470c
HMH		 8734 /* The EC handler is required */
8735 tpacpi_acpi_handle_locate("ec", TPACPI_ACPI_EC_HID, &ec_handle);
5fba344c
HMH		 8736 if (!ec_handle) {
8737 if (is_thinkpad)
e0c7dfe7 8738 printk(TPACPI_ERR
5fba344c
HMH		 8739 "Not yet supported ThinkPad detected!\n");
8740 return -ENODEV;
8741 }
8742
0dcef77c
HMH		 8743 if (!is_thinkpad && !force_load)
8744 return -ENODEV;
8745
5fba344c
HMH		 8746 return 0;
8747}
8748
7a43f788
HMH		 8749static void __init thinkpad_acpi_init_banner(void)
8750{
8751 printk(TPACPI_INFO "%s v%s\n", TPACPI_DESC, TPACPI_VERSION);
8752 printk(TPACPI_INFO "%s\n", TPACPI_URL);
8753
8754 printk(TPACPI_INFO "ThinkPad BIOS %s, EC %s\n",
8755 (thinkpad_id.bios_version_str) ?
8756 thinkpad_id.bios_version_str : "unknown",
8757 (thinkpad_id.ec_version_str) ?
8758 thinkpad_id.ec_version_str : "unknown");
8759
8760 BUG_ON(!thinkpad_id.vendor);
8761
8762 if (thinkpad_id.model_str)
8763 printk(TPACPI_INFO "%s %s, model %s\n",
8764 (thinkpad_id.vendor == PCI_VENDOR_ID_IBM) ?
8765 "IBM" : ((thinkpad_id.vendor ==
8766 PCI_VENDOR_ID_LENOVO) ?
8767 "Lenovo" : "Unknown vendor"),
8768 thinkpad_id.model_str,
8769 (thinkpad_id.nummodel_str) ?
8770 thinkpad_id.nummodel_str : "unknown");
8771}
5fba344c 8772
56b6aeb0 8773/* Module init, exit, parameters */
1da177e4 8774
a5763f22
HMH		 8775static struct ibm_init_struct ibms_init[] __initdata = {
8776 {
a5763f22
HMH		 8777 .data = &thinkpad_acpi_driver_data,
8778 },
8779 {
8780 .init = hotkey_init,
8781 .data = &hotkey_driver_data,
8782 },
8783 {
8784 .init = bluetooth_init,
8785 .data = &bluetooth_driver_data,
8786 },
8787 {
8788 .init = wan_init,
8789 .data = &wan_driver_data,
8790 },
0045c0aa
HMH		 8791 {
8792 .init = uwb_init,
8793 .data = &uwb_driver_data,
8794 },
d7c1d17d 8795#ifdef CONFIG_THINKPAD_ACPI_VIDEO
a5763f22
HMH		 8796 {
8797 .init = video_init,
b525c06c 8798 .base_procfs_mode = S_IRUSR,
a5763f22
HMH		 8799 .data = &video_driver_data,
8800 },
d7c1d17d 8801#endif
a5763f22
HMH		 8802 {
8803 .init = light_init,
8804 .data = &light_driver_data,
8805 },
a5763f22
HMH		 8806 {
8807 .init = cmos_init,
8808 .data = &cmos_driver_data,
8809 },
8810 {
8811 .init = led_init,
8812 .data = &led_driver_data,
8813 },
8814 {
8815 .init = beep_init,
8816 .data = &beep_driver_data,
8817 },
8818 {
8819 .init = thermal_init,
8820 .data = &thermal_driver_data,
8821 },
a5763f22
HMH		 8822 {
8823 .init = brightness_init,
8824 .data = &brightness_driver_data,
8825 },
8826 {
329e4e18 8827 .init = volume_init,
a5763f22
HMH		 8828 .data = &volume_driver_data,
8829 },
8830 {
8831 .init = fan_init,
8832 .data = &fan_driver_data,
8833 },
8834};
8835
3945ac36 8836static int __init set_ibm_param(const char *val, struct kernel_param *kp)
1da177e4
LT		 8837{
8838 unsigned int i;
a5763f22 8839 struct ibm_struct *ibm;
1da177e4 8840
59f91ff1
HMH		 8841 if (!kp || !kp->name || !val)
8842 return -EINVAL;
8843
a5763f22
HMH		 8844 for (i = 0; i < ARRAY_SIZE(ibms_init); i++) {
8845 ibm = ibms_init[i].data;
59f91ff1
HMH		 8846 WARN_ON(ibm == NULL);
8847
8848 if (!ibm || !ibm->name)
8849 continue;
a5763f22
HMH		 8850
8851 if (strcmp(ibm->name, kp->name) == 0 && ibm->write) {
8852 if (strlen(val) > sizeof(ibms_init[i].param) - 2)
78f81cc4 8853 return -ENOSPC;
a5763f22
HMH		 8854 strcpy(ibms_init[i].param, val);
8855 strcat(ibms_init[i].param, ",");
78f81cc4
BD		 8856 return 0;
8857 }
a5763f22 8858 }
1da177e4 8859
1da177e4
LT		 8860 return -EINVAL;
8861}
8862
b09c7225 8863module_param(experimental, int, 0444);
f68080f8 8864MODULE_PARM_DESC(experimental,
35ff8b9f 8865 "Enables experimental features when non-zero");
56b6aeb0 8866
132ce091 8867module_param_named(debug, dbg_level, uint, 0);
f68080f8 8868MODULE_PARM_DESC(debug, "Sets debug level bit-mask");
132ce091 8869
b09c7225 8870module_param(force_load, bool, 0444);
f68080f8 8871MODULE_PARM_DESC(force_load,
35ff8b9f
HMH		 8872 "Attempts to load the driver even on a "
8873 "mis-identified ThinkPad when true");
0dcef77c 8874
b09c7225 8875module_param_named(fan_control, fan_control_allowed, bool, 0444);
f68080f8 8876MODULE_PARM_DESC(fan_control,
35ff8b9f 8877 "Enables setting fan parameters features when true");
ecf2a80a 8878
b09c7225 8879module_param_named(brightness_mode, brightness_mode, uint, 0444);
f68080f8 8880MODULE_PARM_DESC(brightness_mode,
35ff8b9f 8881 "Selects brightness control strategy: "
0e501834 8882 "0=auto, 1=EC, 2=UCMS, 3=EC+NVRAM");
24d3b774 8883
b09c7225 8884module_param(brightness_enable, uint, 0444);
f68080f8 8885MODULE_PARM_DESC(brightness_enable,
35ff8b9f 8886 "Enables backlight control when 1, disables when 0");
87cc537a 8887
b09c7225 8888module_param(hotkey_report_mode, uint, 0444);
f68080f8 8889MODULE_PARM_DESC(hotkey_report_mode,
35ff8b9f
HMH		 8890 "used for backwards compatibility with userspace, "
8891 "see documentation");
ff80f137 8892
ff850c33 8893#ifdef CONFIG_THINKPAD_ACPI_ALSA_SUPPORT
329e4e18
HMH		 8894module_param_named(volume_mode, volume_mode, uint, 0444);
8895MODULE_PARM_DESC(volume_mode,
8896 "Selects volume control strategy: "
8897 "0=auto, 1=EC, 2=N/A, 3=EC+NVRAM");
8898
a112ceee
HMH		 8899module_param_named(volume_capabilities, volume_capabilities, uint, 0444);
8900MODULE_PARM_DESC(volume_capabilities,
8901 "Selects the mixer capabilites: "
8902 "0=auto, 1=volume and mute, 2=mute only");
8903
c7ac6291
HMH		 8904module_param_named(volume_control, volume_control_allowed, bool, 0444);
8905MODULE_PARM_DESC(volume_control,
8906 "Enables software override for the console audio "
8907 "control when true");
8908
0d204c34
HMH		 8909/* ALSA module API parameters */
8910module_param_named(index, alsa_index, int, 0444);
8911MODULE_PARM_DESC(index, "ALSA index for the ACPI EC Mixer");
8912module_param_named(id, alsa_id, charp, 0444);
8913MODULE_PARM_DESC(id, "ALSA id for the ACPI EC Mixer");
8914module_param_named(enable, alsa_enable, bool, 0444);
8915MODULE_PARM_DESC(enable, "Enable the ALSA interface for the ACPI EC Mixer");
ff850c33 8916#endif /* CONFIG_THINKPAD_ACPI_ALSA_SUPPORT */
0d204c34 8917
e0c7dfe7 8918#define TPACPI_PARAM(feature) \
f68080f8 8919 module_param_call(feature, set_ibm_param, NULL, NULL, 0); \
cbb14842 8920 MODULE_PARM_DESC(feature, "Simulates thinkpad-acpi procfs command " \
35ff8b9f 8921 "at module load, see documentation")
1da177e4 8922
e0c7dfe7
HMH		 8923TPACPI_PARAM(hotkey);
8924TPACPI_PARAM(bluetooth);
8925TPACPI_PARAM(video);
8926TPACPI_PARAM(light);
e0c7dfe7
HMH		 8927TPACPI_PARAM(cmos);
8928TPACPI_PARAM(led);
8929TPACPI_PARAM(beep);
e0c7dfe7
HMH		 8930TPACPI_PARAM(brightness);
8931TPACPI_PARAM(volume);
8932TPACPI_PARAM(fan);
78f81cc4 8933
a73f3091 8934#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
b09c7225 8935module_param(dbg_wlswemul, uint, 0444);
a73f3091
HMH		 8936MODULE_PARM_DESC(dbg_wlswemul, "Enables WLSW emulation");
8937module_param_named(wlsw_state, tpacpi_wlsw_emulstate, bool, 0);
8938MODULE_PARM_DESC(wlsw_state,
8939 "Initial state of the emulated WLSW switch");
8940
b09c7225 8941module_param(dbg_bluetoothemul, uint, 0444);
a73f3091
HMH		 8942MODULE_PARM_DESC(dbg_bluetoothemul, "Enables bluetooth switch emulation");
8943module_param_named(bluetooth_state, tpacpi_bluetooth_emulstate, bool, 0);
8944MODULE_PARM_DESC(bluetooth_state,
8945 "Initial state of the emulated bluetooth switch");
8946
b09c7225 8947module_param(dbg_wwanemul, uint, 0444);
a73f3091
HMH		 8948MODULE_PARM_DESC(dbg_wwanemul, "Enables WWAN switch emulation");
8949module_param_named(wwan_state, tpacpi_wwan_emulstate, bool, 0);
8950MODULE_PARM_DESC(wwan_state,
8951 "Initial state of the emulated WWAN switch");
0045c0aa 8952
b09c7225 8953module_param(dbg_uwbemul, uint, 0444);
0045c0aa
HMH		 8954MODULE_PARM_DESC(dbg_uwbemul, "Enables UWB switch emulation");
8955module_param_named(uwb_state, tpacpi_uwb_emulstate, bool, 0);
8956MODULE_PARM_DESC(uwb_state,
8957 "Initial state of the emulated UWB switch");
a73f3091
HMH		 8958#endif
8959
b21a15f6
HMH		 8960static void thinkpad_acpi_module_exit(void)
8961{
8962 struct ibm_struct *ibm, *itmp;
8963
8964 tpacpi_lifecycle = TPACPI_LIFE_EXITING;
8965
8966 list_for_each_entry_safe_reverse(ibm, itmp,
8967 &tpacpi_all_drivers,
8968 all_drivers) {
8969 ibm_exit(ibm);
8970 }
8971
8972 dbg_printk(TPACPI_DBG_INIT, "finished subdriver exit path...\n");
8973
8974 if (tpacpi_inputdev) {
8975 if (tp_features.input_device_registered)
8976 input_unregister_device(tpacpi_inputdev);
8977 else
8978 input_free_device(tpacpi_inputdev);
8979 }
8980
8981 if (tpacpi_hwmon)
8982 hwmon_device_unregister(tpacpi_hwmon);
8983
8984 if (tp_features.sensors_pdev_attrs_registered)
8985 device_remove_file(&tpacpi_sensors_pdev->dev,
8986 &dev_attr_thinkpad_acpi_pdev_name);
8987 if (tpacpi_sensors_pdev)
8988 platform_device_unregister(tpacpi_sensors_pdev);
8989 if (tpacpi_pdev)
8990 platform_device_unregister(tpacpi_pdev);
8991
8992 if (tp_features.sensors_pdrv_attrs_registered)
8993 tpacpi_remove_driver_attributes(&tpacpi_hwmon_pdriver.driver);
8994 if (tp_features.platform_drv_attrs_registered)
8995 tpacpi_remove_driver_attributes(&tpacpi_pdriver.driver);
8996
8997 if (tp_features.sensors_pdrv_registered)
8998 platform_driver_unregister(&tpacpi_hwmon_pdriver);
8999
9000 if (tp_features.platform_drv_registered)
9001 platform_driver_unregister(&tpacpi_pdriver);
9002
9003 if (proc_dir)
e0c7dfe7 9004 remove_proc_entry(TPACPI_PROC_DIR, acpi_root_dir);
b21a15f6 9005
e0e3c061
HMH		 9006 if (tpacpi_wq)
9007 destroy_workqueue(tpacpi_wq);
9008
b21a15f6
HMH		 9009 kfree(thinkpad_id.bios_version_str);
9010 kfree(thinkpad_id.ec_version_str);
9011 kfree(thinkpad_id.model_str);
9012}
9013
f74a27d4 9014
1def7115 9015static int __init thinkpad_acpi_module_init(void)
1da177e4
LT		 9016{
9017 int ret, i;
9018
8fef502e
HMH		 9019 tpacpi_lifecycle = TPACPI_LIFE_INIT;
9020
ff80f137
HMH		 9021 /* Parameter checking */
9022 if (hotkey_report_mode > 2)
9023 return -EINVAL;
9024
54ae1501 9025 /* Driver-level probe */
d5a2f2f1 9026
bf20e740
HMH		 9027 ret = get_thinkpad_model_data(&thinkpad_id);
9028 if (ret) {
9029 printk(TPACPI_ERR
9030 "unable to get DMI data: %d\n", ret);
9031 thinkpad_acpi_module_exit();
9032 return ret;
9033 }
5fba344c 9034 ret = probe_for_thinkpad();
d5a2f2f1
HMH		 9035 if (ret) {
9036 thinkpad_acpi_module_exit();
5fba344c 9037 return ret;
d5a2f2f1 9038 }
1da177e4 9039
54ae1501 9040 /* Driver initialization */
d5a2f2f1 9041
7a43f788
HMH		 9042 thinkpad_acpi_init_banner();
9043 tpacpi_check_outdated_fw();
9044
e0c7dfe7
HMH		 9045 TPACPI_ACPIHANDLE_INIT(ecrd);
9046 TPACPI_ACPIHANDLE_INIT(ecwr);
1da177e4 9047
e0e3c061
HMH		 9048 tpacpi_wq = create_singlethread_workqueue(TPACPI_WORKQUEUE_NAME);
9049 if (!tpacpi_wq) {
9050 thinkpad_acpi_module_exit();
9051 return -ENOMEM;
9052 }
9053
e0c7dfe7 9054 proc_dir = proc_mkdir(TPACPI_PROC_DIR, acpi_root_dir);
1da177e4 9055 if (!proc_dir) {
35ff8b9f
HMH		 9056 printk(TPACPI_ERR
9057 "unable to create proc dir " TPACPI_PROC_DIR);
1def7115 9058 thinkpad_acpi_module_exit();
1da177e4
LT		 9059 return -ENODEV;
9060 }
78f81cc4 9061
54ae1501
HMH		 9062 ret = platform_driver_register(&tpacpi_pdriver);
9063 if (ret) {
35ff8b9f
HMH		 9064 printk(TPACPI_ERR
9065 "unable to register main platform driver\n");
54ae1501
HMH		 9066 thinkpad_acpi_module_exit();
9067 return ret;
9068 }
ac36393d
HMH		 9069 tp_features.platform_drv_registered = 1;
9070
7fd40029
HMH		 9071 ret = platform_driver_register(&tpacpi_hwmon_pdriver);
9072 if (ret) {
35ff8b9f
HMH		 9073 printk(TPACPI_ERR
9074 "unable to register hwmon platform driver\n");
7fd40029
HMH		 9075 thinkpad_acpi_module_exit();
9076 return ret;
9077 }
9078 tp_features.sensors_pdrv_registered = 1;
9079
176750d6 9080 ret = tpacpi_create_driver_attributes(&tpacpi_pdriver.driver);
2369cc94
HMH		 9081 if (!ret) {
9082 tp_features.platform_drv_attrs_registered = 1;
35ff8b9f
HMH		 9083 ret = tpacpi_create_driver_attributes(
9084 &tpacpi_hwmon_pdriver.driver);
2369cc94 9085 }
176750d6 9086 if (ret) {
35ff8b9f
HMH		 9087 printk(TPACPI_ERR
9088 "unable to create sysfs driver attributes\n");
176750d6
HMH		 9089 thinkpad_acpi_module_exit();
9090 return ret;
9091 }
2369cc94 9092 tp_features.sensors_pdrv_attrs_registered = 1;
176750d6 9093
54ae1501
HMH		 9094
9095 /* Device initialization */
e0c7dfe7 9096 tpacpi_pdev = platform_device_register_simple(TPACPI_DRVR_NAME, -1,
54ae1501
HMH		 9097 NULL, 0);
9098 if (IS_ERR(tpacpi_pdev)) {
9099 ret = PTR_ERR(tpacpi_pdev);
9100 tpacpi_pdev = NULL;
e0c7dfe7 9101 printk(TPACPI_ERR "unable to register platform device\n");
54ae1501
HMH		 9102 thinkpad_acpi_module_exit();
9103 return ret;
9104 }
7fd40029 9105 tpacpi_sensors_pdev = platform_device_register_simple(
35ff8b9f
HMH		 9106 TPACPI_HWMON_DRVR_NAME,
9107 -1, NULL, 0);
7fd40029
HMH		 9108 if (IS_ERR(tpacpi_sensors_pdev)) {
9109 ret = PTR_ERR(tpacpi_sensors_pdev);
9110 tpacpi_sensors_pdev = NULL;
35ff8b9f
HMH		 9111 printk(TPACPI_ERR
9112 "unable to register hwmon platform device\n");
7fd40029
HMH		 9113 thinkpad_acpi_module_exit();
9114 return ret;
9115 }
9116 ret = device_create_file(&tpacpi_sensors_pdev->dev,
9117 &dev_attr_thinkpad_acpi_pdev_name);
9118 if (ret) {
e0c7dfe7 9119 printk(TPACPI_ERR
35ff8b9f 9120 "unable to create sysfs hwmon device attributes\n");
7fd40029
HMH		 9121 thinkpad_acpi_module_exit();
9122 return ret;
9123 }
9124 tp_features.sensors_pdev_attrs_registered = 1;
9125 tpacpi_hwmon = hwmon_device_register(&tpacpi_sensors_pdev->dev);
54ae1501
HMH		 9126 if (IS_ERR(tpacpi_hwmon)) {
9127 ret = PTR_ERR(tpacpi_hwmon);
9128 tpacpi_hwmon = NULL;
e0c7dfe7 9129 printk(TPACPI_ERR "unable to register hwmon device\n");
54ae1501
HMH		 9130 thinkpad_acpi_module_exit();
9131 return ret;
9132 }
8523ed6f 9133 mutex_init(&tpacpi_inputdev_send_mutex);
7f5d1cd6
HMH		 9134 tpacpi_inputdev = input_allocate_device();
9135 if (!tpacpi_inputdev) {
e0c7dfe7 9136 printk(TPACPI_ERR "unable to allocate input device\n");
7f5d1cd6
HMH		 9137 thinkpad_acpi_module_exit();
9138 return -ENOMEM;
9139 } else {
9140 /* Prepare input device, but don't register */
9141 tpacpi_inputdev->name = "ThinkPad Extra Buttons";
e0c7dfe7 9142 tpacpi_inputdev->phys = TPACPI_DRVR_NAME "/input0";
7f5d1cd6 9143 tpacpi_inputdev->id.bustype = BUS_HOST;
e28393c0 9144 tpacpi_inputdev->id.vendor = thinkpad_id.vendor;
7f5d1cd6
HMH		 9145 tpacpi_inputdev->id.product = TPACPI_HKEY_INPUT_PRODUCT;
9146 tpacpi_inputdev->id.version = TPACPI_HKEY_INPUT_VERSION;
d112ef95 9147 tpacpi_inputdev->dev.parent = &tpacpi_pdev->dev;
7f5d1cd6 9148 }
77775838
HMH		 9149
9150 /* Init subdriver dependencies */
9151 tpacpi_detect_brightness_capabilities();
9152
9153 /* Init subdrivers */
a5763f22
HMH		 9154 for (i = 0; i < ARRAY_SIZE(ibms_init); i++) {
9155 ret = ibm_init(&ibms_init[i]);
9156 if (ret >= 0 && *ibms_init[i].param)
9157 ret = ibms_init[i].data->write(ibms_init[i].param);
1da177e4 9158 if (ret < 0) {
1def7115 9159 thinkpad_acpi_module_exit();
1da177e4
LT		 9160 return ret;
9161 }
9162 }
b589ea4c
HMH		 9163
9164 tpacpi_lifecycle = TPACPI_LIFE_RUNNING;
9165
7f5d1cd6
HMH		 9166 ret = input_register_device(tpacpi_inputdev);
9167 if (ret < 0) {
e0c7dfe7 9168 printk(TPACPI_ERR "unable to register input device\n");
7f5d1cd6
HMH		 9169 thinkpad_acpi_module_exit();
9170 return ret;
9171 } else {
9172 tp_features.input_device_registered = 1;
9173 }
1da177e4
LT		 9174
9175 return 0;
9176}
9177
95e57ab2
HMH		 9178MODULE_ALIAS(TPACPI_DRVR_SHORTNAME);
9179
922fe097
HMH		 9180/*
9181 * This will autoload the driver in almost every ThinkPad
9182 * in widespread use.
9183 *
9184 * Only _VERY_ old models, like the 240, 240x and 570 lack
9185 * the HKEY event interface.
9186 */
9187MODULE_DEVICE_TABLE(acpi, ibm_htk_device_ids);
9188
f68080f8
HMH		 9189/*
9190 * DMI matching for module autoloading
9191 *
9192 * See http://thinkwiki.org/wiki/List_of_DMI_IDs
9193 * See http://thinkwiki.org/wiki/BIOS_Upgrade_Downloads
9194 *
9195 * Only models listed in thinkwiki will be supported, so add yours
9196 * if it is not there yet.
9197 */
9198#define IBM_BIOS_MODULE_ALIAS(__type) \
b36a50f9 9199 MODULE_ALIAS("dmi:bvnIBM:bvr" __type "ET??WW*")
f68080f8 9200
f68080f8
HMH		 9201/* Ancient thinkpad BIOSes have to be identified by
9202 * BIOS type or model number, and there are far less
9203 * BIOS types than model numbers... */
922fe097 9204IBM_BIOS_MODULE_ALIAS("I[MU]"); /* 570, 570e */
f68080f8 9205
f68f53a2
HMH		 9206MODULE_AUTHOR("Borislav Deianov <borislav@users.sf.net>");
9207MODULE_AUTHOR("Henrique de Moraes Holschuh <hmh@hmh.eng.br>");
e0c7dfe7
HMH		 9208MODULE_DESCRIPTION(TPACPI_DESC);
9209MODULE_VERSION(TPACPI_VERSION);
f68080f8
HMH		 9210MODULE_LICENSE("GPL");
9211
1def7115
HMH		 9212module_init(thinkpad_acpi_module_init);
9213module_exit(thinkpad_acpi_module_exit);
Linux kernel - Deliverables
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