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bcmring: drop commented out line in Kconfig
[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
0978e012
JP		 24#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
25
5d2eb14d 26#define TPACPI_VERSION "0.24"
a112ceee 27#define TPACPI_SYSFS_VERSION 0x020700
78f81cc4
BD		 28
29/*
1da177e4 30 * Changelog:
4b45cc07
HMH		 31 * 2007-10-20 changelog trimmed down
32 *
643f12db
HMH		 33 * 2007-03-27 0.14 renamed to thinkpad_acpi and moved to
34 * drivers/misc.
f9ff43a6
HMH		 35 *
36 * 2006-11-22 0.13 new maintainer
37 * changelog now lives in git commit history, and will
38 * not be updated further in-file.
837ca6dd 39 *
78f81cc4
BD		 40 * 2005-03-17 0.11 support for 600e, 770x
41 * thanks to Jamie Lentin <lentinj@dial.pipex.com>
4b45cc07
HMH		 42 *
43 * 2005-01-16 0.9 use MODULE_VERSION
78f81cc4
BD		 44 * thanks to Henrik Brix Andersen <brix@gentoo.org>
45 * fix parameter passing on module loading
46 * thanks to Rusty Russell <rusty@rustcorp.com.au>
47 * thanks to Jim Radford <radford@blackbean.org>
48 * 2004-11-08 0.8 fix init error case, don't return from a macro
49 * thanks to Chris Wright <chrisw@osdl.org>
1da177e4
LT		 50 */
51
0c78039f
HMH		 52#include <linux/kernel.h>
53#include <linux/module.h>
54#include <linux/init.h>
55#include <linux/types.h>
56#include <linux/string.h>
57#include <linux/list.h>
58#include <linux/mutex.h>
73a94d86 59#include <linux/sched.h>
0c78039f
HMH		 60#include <linux/kthread.h>
61#include <linux/freezer.h>
62#include <linux/delay.h>
5a0e3ad6 63#include <linux/slab.h>
0c78039f
HMH		 64
65#include <linux/nvram.h>
66#include <linux/proc_fs.h>
887965e6 67#include <linux/seq_file.h>
0c78039f
HMH		 68#include <linux/sysfs.h>
69#include <linux/backlight.h>
70#include <linux/fb.h>
71#include <linux/platform_device.h>
72#include <linux/hwmon.h>
73#include <linux/hwmon-sysfs.h>
74#include <linux/input.h>
4fa6811b 75#include <linux/leds.h>
0e74dc26 76#include <linux/rfkill.h>
0c78039f
HMH		 77#include <asm/uaccess.h>
78
79#include <linux/dmi.h>
80#include <linux/jiffies.h>
81#include <linux/workqueue.h>
82
0d204c34
HMH		 83#include <sound/core.h>
84#include <sound/control.h>
85#include <sound/initval.h>
86
0c78039f 87#include <acpi/acpi_drivers.h>
0c78039f
HMH		 88
89#include <linux/pci_ids.h>
90
0c78039f
HMH		 91
92/* ThinkPad CMOS commands */
93#define TP_CMOS_VOLUME_DOWN 0
94#define TP_CMOS_VOLUME_UP 1
95#define TP_CMOS_VOLUME_MUTE 2
96#define TP_CMOS_BRIGHTNESS_UP 4
97#define TP_CMOS_BRIGHTNESS_DOWN 5
4fa6811b
HMH		 98#define TP_CMOS_THINKLIGHT_ON 12
99#define TP_CMOS_THINKLIGHT_OFF 13
0c78039f
HMH		 100
101/* NVRAM Addresses */
102enum tp_nvram_addr {
103 TP_NVRAM_ADDR_HK2 = 0x57,
104 TP_NVRAM_ADDR_THINKLIGHT = 0x58,
105 TP_NVRAM_ADDR_VIDEO = 0x59,
106 TP_NVRAM_ADDR_BRIGHTNESS = 0x5e,
107 TP_NVRAM_ADDR_MIXER = 0x60,
108};
109
110/* NVRAM bit masks */
111enum {
112 TP_NVRAM_MASK_HKT_THINKPAD = 0x08,
113 TP_NVRAM_MASK_HKT_ZOOM = 0x20,
114 TP_NVRAM_MASK_HKT_DISPLAY = 0x40,
115 TP_NVRAM_MASK_HKT_HIBERNATE = 0x80,
116 TP_NVRAM_MASK_THINKLIGHT = 0x10,
117 TP_NVRAM_MASK_HKT_DISPEXPND = 0x30,
118 TP_NVRAM_MASK_HKT_BRIGHTNESS = 0x20,
119 TP_NVRAM_MASK_LEVEL_BRIGHTNESS = 0x0f,
120 TP_NVRAM_POS_LEVEL_BRIGHTNESS = 0,
121 TP_NVRAM_MASK_MUTE = 0x40,
122 TP_NVRAM_MASK_HKT_VOLUME = 0x80,
123 TP_NVRAM_MASK_LEVEL_VOLUME = 0x0f,
124 TP_NVRAM_POS_LEVEL_VOLUME = 0,
125};
126
5d756db9
HMH		 127/* Misc NVRAM-related */
128enum {
129 TP_NVRAM_LEVEL_VOLUME_MAX = 14,
130};
131
b21a15f6 132/* ACPI HIDs */
9fbdaeb4
MI		 133#define TPACPI_ACPI_IBM_HKEY_HID "IBM0068"
134#define TPACPI_ACPI_LENOVO_HKEY_HID "LEN0068"
437e470c 135#define TPACPI_ACPI_EC_HID "PNP0C09"
b21a15f6
HMH		 136
137/* Input IDs */
138#define TPACPI_HKEY_INPUT_PRODUCT 0x5054 /* "TP" */
139#define TPACPI_HKEY_INPUT_VERSION 0x4101
140
153f8220
HMH		 141/* ACPI \WGSV commands */
142enum {
143 TP_ACPI_WGSV_GET_STATE = 0x01, /* Get state information */
144 TP_ACPI_WGSV_PWR_ON_ON_RESUME = 0x02, /* Resume WWAN powered on */
145 TP_ACPI_WGSV_PWR_OFF_ON_RESUME = 0x03, /* Resume WWAN powered off */
146 TP_ACPI_WGSV_SAVE_STATE = 0x04, /* Save state for S4/S5 */
147};
148
149/* TP_ACPI_WGSV_GET_STATE bits */
150enum {
151 TP_ACPI_WGSV_STATE_WWANEXIST = 0x0001, /* WWAN hw available */
152 TP_ACPI_WGSV_STATE_WWANPWR = 0x0002, /* WWAN radio enabled */
153 TP_ACPI_WGSV_STATE_WWANPWRRES = 0x0004, /* WWAN state at resume */
154 TP_ACPI_WGSV_STATE_WWANBIOSOFF = 0x0008, /* WWAN disabled in BIOS */
155 TP_ACPI_WGSV_STATE_BLTHEXIST = 0x0001, /* BLTH hw available */
156 TP_ACPI_WGSV_STATE_BLTHPWR = 0x0002, /* BLTH radio enabled */
157 TP_ACPI_WGSV_STATE_BLTHPWRRES = 0x0004, /* BLTH state at resume */
158 TP_ACPI_WGSV_STATE_BLTHBIOSOFF = 0x0008, /* BLTH disabled in BIOS */
159 TP_ACPI_WGSV_STATE_UWBEXIST = 0x0010, /* UWB hw available */
160 TP_ACPI_WGSV_STATE_UWBPWR = 0x0020, /* UWB radio enabled */
161};
b21a15f6 162
67bcae6e
HMH		 163/* HKEY events */
164enum tpacpi_hkey_event_t {
165 /* Hotkey-related */
166 TP_HKEY_EV_HOTKEY_BASE = 0x1001, /* first hotkey (FN+F1) */
167 TP_HKEY_EV_BRGHT_UP = 0x1010, /* Brightness up */
168 TP_HKEY_EV_BRGHT_DOWN = 0x1011, /* Brightness down */
169 TP_HKEY_EV_VOL_UP = 0x1015, /* Volume up or unmute */
170 TP_HKEY_EV_VOL_DOWN = 0x1016, /* Volume down or unmute */
171 TP_HKEY_EV_VOL_MUTE = 0x1017, /* Mixer output mute */
172
173 /* Reasons for waking up from S3/S4 */
174 TP_HKEY_EV_WKUP_S3_UNDOCK = 0x2304, /* undock requested, S3 */
175 TP_HKEY_EV_WKUP_S4_UNDOCK = 0x2404, /* undock requested, S4 */
176 TP_HKEY_EV_WKUP_S3_BAYEJ = 0x2305, /* bay ejection req, S3 */
177 TP_HKEY_EV_WKUP_S4_BAYEJ = 0x2405, /* bay ejection req, S4 */
178 TP_HKEY_EV_WKUP_S3_BATLOW = 0x2313, /* battery empty, S3 */
179 TP_HKEY_EV_WKUP_S4_BATLOW = 0x2413, /* battery empty, S4 */
180
181 /* Auto-sleep after eject request */
182 TP_HKEY_EV_BAYEJ_ACK = 0x3003, /* bay ejection complete */
183 TP_HKEY_EV_UNDOCK_ACK = 0x4003, /* undock complete */
184
185 /* Misc bay events */
186 TP_HKEY_EV_OPTDRV_EJ = 0x3006, /* opt. drive tray ejected */
a50245af
HMH		 187 TP_HKEY_EV_HOTPLUG_DOCK = 0x4010, /* docked into hotplug dock
188 or port replicator */
189 TP_HKEY_EV_HOTPLUG_UNDOCK = 0x4011, /* undocked from hotplug
190 dock or port replicator */
67bcae6e
HMH		 191
192 /* User-interface events */
193 TP_HKEY_EV_LID_CLOSE = 0x5001, /* laptop lid closed */
194 TP_HKEY_EV_LID_OPEN = 0x5002, /* laptop lid opened */
195 TP_HKEY_EV_TABLET_TABLET = 0x5009, /* tablet swivel up */
196 TP_HKEY_EV_TABLET_NOTEBOOK = 0x500a, /* tablet swivel down */
197 TP_HKEY_EV_PEN_INSERTED = 0x500b, /* tablet pen inserted */
198 TP_HKEY_EV_PEN_REMOVED = 0x500c, /* tablet pen removed */
199 TP_HKEY_EV_BRGHT_CHANGED = 0x5010, /* backlight control event */
200
2d43f671
HMH		 201 /* Key-related user-interface events */
202 TP_HKEY_EV_KEY_NUMLOCK = 0x6000, /* NumLock key pressed */
203 TP_HKEY_EV_KEY_FN = 0x6005, /* Fn key pressed? E420 */
204
67bcae6e
HMH		 205 /* Thermal events */
206 TP_HKEY_EV_ALARM_BAT_HOT = 0x6011, /* battery too hot */
207 TP_HKEY_EV_ALARM_BAT_XHOT = 0x6012, /* battery critically hot */
208 TP_HKEY_EV_ALARM_SENSOR_HOT = 0x6021, /* sensor too hot */
209 TP_HKEY_EV_ALARM_SENSOR_XHOT = 0x6022, /* sensor critically hot */
210 TP_HKEY_EV_THM_TABLE_CHANGED = 0x6030, /* thermal table changed */
211
2d43f671
HMH		 212 TP_HKEY_EV_UNK_6040 = 0x6040, /* Related to AC change?
213 some sort of APM hint,
214 W520 */
215
67bcae6e
HMH		 216 /* Misc */
217 TP_HKEY_EV_RFKILL_CHANGED = 0x7000, /* rfkill switch changed */
218};
219
b21a15f6
HMH		 220/****************************************************************************
221 * Main driver
222 */
223
e0c7dfe7
HMH		 224#define TPACPI_NAME "thinkpad"
225#define TPACPI_DESC "ThinkPad ACPI Extras"
226#define TPACPI_FILE TPACPI_NAME "_acpi"
227#define TPACPI_URL "http://ibm-acpi.sf.net/"
228#define TPACPI_MAIL "ibm-acpi-devel@lists.sourceforge.net"
b21a15f6 229
e0c7dfe7
HMH		 230#define TPACPI_PROC_DIR "ibm"
231#define TPACPI_ACPI_EVENT_PREFIX "ibm"
232#define TPACPI_DRVR_NAME TPACPI_FILE
95e57ab2 233#define TPACPI_DRVR_SHORTNAME "tpacpi"
e0c7dfe7 234#define TPACPI_HWMON_DRVR_NAME TPACPI_NAME "_hwmon"
b21a15f6 235
95e57ab2 236#define TPACPI_NVRAM_KTHREAD_NAME "ktpacpi_nvramd"
e0e3c061 237#define TPACPI_WORKQUEUE_NAME "ktpacpid"
95e57ab2 238
e0c7dfe7 239#define TPACPI_MAX_ACPI_ARGS 3
b21a15f6 240
7ff8d62f 241/* Debugging printk groups */
0c78039f 242#define TPACPI_DBG_ALL 0xffff
73a94d86 243#define TPACPI_DBG_DISCLOSETASK 0x8000
0c78039f
HMH		 244#define TPACPI_DBG_INIT 0x0001
245#define TPACPI_DBG_EXIT 0x0002
bee4cd9b 246#define TPACPI_DBG_RFKILL 0x0004
56e2c200 247#define TPACPI_DBG_HKEY 0x0008
74a60c0f 248#define TPACPI_DBG_FAN 0x0010
0e501834 249#define TPACPI_DBG_BRGHT 0x0020
329e4e18 250#define TPACPI_DBG_MIXER 0x0040
0c78039f 251
35ff8b9f
HMH		 252#define onoff(status, bit) ((status) & (1 << (bit)) ? "on" : "off")
253#define enabled(status, bit) ((status) & (1 << (bit)) ? "enabled" : "disabled")
254#define strlencmp(a, b) (strncmp((a), (b), strlen(b)))
0c78039f 255
0c78039f
HMH		 256
257/****************************************************************************
b21a15f6 258 * Driver-wide structs and misc. variables
0c78039f
HMH		 259 */
260
261struct ibm_struct;
262
263struct tp_acpi_drv_struct {
264 const struct acpi_device_id *hid;
265 struct acpi_driver *driver;
266
267 void (*notify) (struct ibm_struct *, u32);
268 acpi_handle *handle;
269 u32 type;
270 struct acpi_device *device;
271};
272
273struct ibm_struct {
274 char *name;
275
887965e6 276 int (*read) (struct seq_file *);
0c78039f
HMH		 277 int (*write) (char *);
278 void (*exit) (void);
279 void (*resume) (void);
083f1760 280 void (*suspend) (pm_message_t state);
90d9d3c7 281 void (*shutdown) (void);
0c78039f
HMH		 282
283 struct list_head all_drivers;
284
285 struct tp_acpi_drv_struct *acpi;
286
287 struct {
288 u8 acpi_driver_registered:1;
289 u8 acpi_notify_installed:1;
290 u8 proc_created:1;
291 u8 init_called:1;
292 u8 experimental:1;
293 } flags;
294};
295
296struct ibm_init_struct {
297 char param[32];
298
299 int (*init) (struct ibm_init_struct *);
b525c06c 300 mode_t base_procfs_mode;
0c78039f
HMH		 301 struct ibm_struct *data;
302};
303
304static struct {
0c78039f
HMH		 305 u32 bluetooth:1;
306 u32 hotkey:1;
307 u32 hotkey_mask:1;
308 u32 hotkey_wlsw:1;
6c231bd5 309 u32 hotkey_tablet:1;
0c78039f
HMH		 310 u32 light:1;
311 u32 light_status:1;
b5972796 312 u32 bright_acpimode:1;
77775838 313 u32 bright_unkfw:1;
0c78039f 314 u32 wan:1;
0045c0aa 315 u32 uwb:1;
0c78039f 316 u32 fan_ctrl_status_undef:1;
d7377247 317 u32 second_fan:1;
60201732 318 u32 beep_needs_two_args:1;
a112ceee 319 u32 mixer_no_level_control:1;
0c78039f
HMH		 320 u32 input_device_registered:1;
321 u32 platform_drv_registered:1;
322 u32 platform_drv_attrs_registered:1;
323 u32 sensors_pdrv_registered:1;
324 u32 sensors_pdrv_attrs_registered:1;
325 u32 sensors_pdev_attrs_registered:1;
326 u32 hotkey_poll_active:1;
327} tp_features;
328
92889022
HMH		 329static struct {
330 u16 hotkey_mask_ff:1;
c7ac6291 331 u16 volume_ctrl_forbidden:1;
92889022
HMH		 332} tp_warned;
333
0c78039f
HMH		 334struct thinkpad_id_data {
335 unsigned int vendor; /* ThinkPad vendor:
336 * PCI_VENDOR_ID_IBM/PCI_VENDOR_ID_LENOVO */
337
338 char *bios_version_str; /* Something like 1ZET51WW (1.03z) */
339 char *ec_version_str; /* Something like 1ZHT51WW-1.04a */
340
050df107 341 u16 bios_model; /* 1Y = 0x5931, 0 = unknown */
0c78039f 342 u16 ec_model;
050df107
HMH		 343 u16 bios_release; /* 1ZETK1WW = 0x314b, 0 = unknown */
344 u16 ec_release;
0c78039f 345
8c74adbc
HMH		 346 char *model_str; /* ThinkPad T43 */
347 char *nummodel_str; /* 9384A9C for a 9384-A9C model */
0c78039f 348};
0c78039f
HMH		 349static struct thinkpad_id_data thinkpad_id;
350
8fef502e
HMH		 351static enum {
352 TPACPI_LIFE_INIT = 0,
353 TPACPI_LIFE_RUNNING,
354 TPACPI_LIFE_EXITING,
355} tpacpi_lifecycle;
356
b21a15f6
HMH		 357static int experimental;
358static u32 dbg_level;
359
e0e3c061
HMH		 360static struct workqueue_struct *tpacpi_wq;
361
75bd3bf2
HMH		 362enum led_status_t {
363 TPACPI_LED_OFF = 0,
364 TPACPI_LED_ON,
365 TPACPI_LED_BLINK,
366};
367
4fa6811b
HMH		 368/* Special LED class that can defer work */
369struct tpacpi_led_classdev {
370 struct led_classdev led_classdev;
371 struct work_struct work;
75bd3bf2 372 enum led_status_t new_state;
af116101 373 unsigned int led;
4fa6811b
HMH		 374};
375
77775838
HMH		 376/* brightness level capabilities */
377static unsigned int bright_maxlvl; /* 0 = unknown */
378
a73f3091
HMH		 379#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
380static int dbg_wlswemul;
381static int tpacpi_wlsw_emulstate;
382static int dbg_bluetoothemul;
383static int tpacpi_bluetooth_emulstate;
384static int dbg_wwanemul;
385static int tpacpi_wwan_emulstate;
0045c0aa
HMH		 386static int dbg_uwbemul;
387static int tpacpi_uwb_emulstate;
a73f3091
HMH		 388#endif
389
390
3dcc2c3b
HMH		 391/*************************************************************************
392 * Debugging helpers
393 */
394
0978e012
JP		 395#define dbg_printk(a_dbg_level, format, arg...) \
396do { \
397 if (dbg_level & (a_dbg_level)) \
398 printk(KERN_DEBUG pr_fmt("%s: " format), \
399 __func__, ##arg); \
400} while (0)
3dcc2c3b
HMH		 401
402#ifdef CONFIG_THINKPAD_ACPI_DEBUG
403#define vdbg_printk dbg_printk
404static const char *str_supported(int is_supported);
405#else
0978e012
JP		 406static inline const char *str_supported(int is_supported) { return ""; }
407#define vdbg_printk(a_dbg_level, format, arg...) \
408 no_printk(format, ##arg)
3dcc2c3b
HMH		 409#endif
410
73a94d86
HMH		 411static void tpacpi_log_usertask(const char * const what)
412{
0978e012
JP		 413 printk(KERN_DEBUG pr_fmt("%s: access by process with PID %d\n"),
414 what, task_tgid_vnr(current));
73a94d86
HMH		 415}
416
0978e012
JP		 417#define tpacpi_disclose_usertask(what, format, arg...) \
418do { \
419 if (unlikely((dbg_level & TPACPI_DBG_DISCLOSETASK) && \
420 (tpacpi_lifecycle == TPACPI_LIFE_RUNNING))) { \
421 printk(KERN_DEBUG pr_fmt("%s: PID %d: " format), \
422 what, task_tgid_vnr(current), ## arg); \
423 } \
424} while (0)
3dcc2c3b 425
7d95a3d5
HMH		 426/*
427 * Quirk handling helpers
428 *
429 * ThinkPad IDs and versions seen in the field so far
430 * are two-characters from the set [0-9A-Z], i.e. base 36.
431 *
432 * We use values well outside that range as specials.
433 */
434
435#define TPACPI_MATCH_ANY 0xffffU
436#define TPACPI_MATCH_UNKNOWN 0U
437
438/* TPID('1', 'Y') == 0x5931 */
439#define TPID(__c1, __c2) (((__c2) << 8) | (__c1))
440
441#define TPACPI_Q_IBM(__id1, __id2, __quirk) \
442 { .vendor = PCI_VENDOR_ID_IBM, \
443 .bios = TPID(__id1, __id2), \
444 .ec = TPACPI_MATCH_ANY, \
445 .quirks = (__quirk) }
446
447#define TPACPI_Q_LNV(__id1, __id2, __quirk) \
448 { .vendor = PCI_VENDOR_ID_LENOVO, \
449 .bios = TPID(__id1, __id2), \
450 .ec = TPACPI_MATCH_ANY, \
451 .quirks = (__quirk) }
452
a112ceee
HMH		 453#define TPACPI_QEC_LNV(__id1, __id2, __quirk) \
454 { .vendor = PCI_VENDOR_ID_LENOVO, \
455 .bios = TPACPI_MATCH_ANY, \
456 .ec = TPID(__id1, __id2), \
457 .quirks = (__quirk) }
458
7d95a3d5
HMH		 459struct tpacpi_quirk {
460 unsigned int vendor;
461 u16 bios;
462 u16 ec;
463 unsigned long quirks;
464};
465
466/**
467 * tpacpi_check_quirks() - search BIOS/EC version on a list
468 * @qlist: array of &struct tpacpi_quirk
469 * @qlist_size: number of elements in @qlist
470 *
471 * Iterates over a quirks list until one is found that matches the
472 * ThinkPad's vendor, BIOS and EC model.
473 *
474 * Returns 0 if nothing matches, otherwise returns the quirks field of
475 * the matching &struct tpacpi_quirk entry.
476 *
477 * The match criteria is: vendor, ec and bios much match.
478 */
479static unsigned long __init tpacpi_check_quirks(
480 const struct tpacpi_quirk *qlist,
481 unsigned int qlist_size)
482{
483 while (qlist_size) {
484 if ((qlist->vendor == thinkpad_id.vendor ||
485 qlist->vendor == TPACPI_MATCH_ANY) &&
486 (qlist->bios == thinkpad_id.bios_model ||
487 qlist->bios == TPACPI_MATCH_ANY) &&
488 (qlist->ec == thinkpad_id.ec_model ||
489 qlist->ec == TPACPI_MATCH_ANY))
490 return qlist->quirks;
491
492 qlist_size--;
493 qlist++;
494 }
495 return 0;
496}
497
e28393c0
HMH		 498static inline bool __pure __init tpacpi_is_lenovo(void)
499{
500 return thinkpad_id.vendor == PCI_VENDOR_ID_LENOVO;
501}
502
503static inline bool __pure __init tpacpi_is_ibm(void)
504{
505 return thinkpad_id.vendor == PCI_VENDOR_ID_IBM;
506}
7d95a3d5 507
56b6aeb0
HMH		 508/****************************************************************************
509 ****************************************************************************
510 *
511 * ACPI Helpers and device model
512 *
513 ****************************************************************************
514 ****************************************************************************/
515
516/*************************************************************************
517 * ACPI basic handles
518 */
1da177e4 519
94954cc6 520static acpi_handle root_handle;
437e470c 521static acpi_handle ec_handle;
1da177e4 522
e0c7dfe7 523#define TPACPI_HANDLE(object, parent, paths...) \
1da177e4 524 static acpi_handle object##_handle; \
ef07a5ab
HMH		 525 static const acpi_handle *object##_parent __initdata = \
526 &parent##_handle; \
527 static char *object##_paths[] __initdata = { paths }
1da177e4 528
e0c7dfe7
HMH		 529TPACPI_HANDLE(ecrd, ec, "ECRD"); /* 570 */
530TPACPI_HANDLE(ecwr, ec, "ECWR"); /* 570 */
78f81cc4 531
35ff8b9f
HMH		 532TPACPI_HANDLE(cmos, root, "\\UCMS", /* R50, R50e, R50p, R51, */
533 /* T4x, X31, X40 */
78f81cc4
BD		 534 "\\CMOS", /* A3x, G4x, R32, T23, T30, X22-24, X30 */
535 "\\CMS", /* R40, R40e */
56b6aeb0 536 ); /* all others */
78f81cc4 537
e0c7dfe7 538TPACPI_HANDLE(hkey, ec, "\\_SB.HKEY", /* 600e/x, 770e, 770x */
78f81cc4
BD		 539 "^HKEY", /* R30, R31 */
540 "HKEY", /* all others */
56b6aeb0 541 ); /* 570 */
78f81cc4 542
56b6aeb0
HMH		 543/*************************************************************************
544 * ACPI helpers
a8b7a662
HMH		 545 */
546
1da177e4
LT		 547static int acpi_evalf(acpi_handle handle,
548 void *res, char *method, char *fmt, ...)
549{
550 char *fmt0 = fmt;
78f81cc4 551 struct acpi_object_list params;
e0c7dfe7 552 union acpi_object in_objs[TPACPI_MAX_ACPI_ARGS];
78f81cc4
BD		 553 struct acpi_buffer result, *resultp;
554 union acpi_object out_obj;
555 acpi_status status;
556 va_list ap;
557 char res_type;
558 int success;
559 int quiet;
1da177e4
LT		 560
561 if (!*fmt) {
0978e012 562 pr_err("acpi_evalf() called with empty format\n");
1da177e4
LT		 563 return 0;
564 }
565
566 if (*fmt == 'q') {
567 quiet = 1;
568 fmt++;
569 } else
570 quiet = 0;
571
572 res_type = *(fmt++);
573
574 params.count = 0;
575 params.pointer = &in_objs[0];
576
577 va_start(ap, fmt);
578 while (*fmt) {
579 char c = *(fmt++);
580 switch (c) {
581 case 'd': /* int */
582 in_objs[params.count].integer.value = va_arg(ap, int);
583 in_objs[params.count++].type = ACPI_TYPE_INTEGER;
584 break;
78f81cc4 585 /* add more types as needed */
1da177e4 586 default:
0978e012 587 pr_err("acpi_evalf() called "
1da177e4 588 "with invalid format character '%c'\n", c);
21365851 589 va_end(ap);
1da177e4
LT		 590 return 0;
591 }
592 }
593 va_end(ap);
594
78f81cc4
BD		 595 if (res_type != 'v') {
596 result.length = sizeof(out_obj);
597 result.pointer = &out_obj;
598 resultp = &result;
599 } else
600 resultp = NULL;
1da177e4 601
78f81cc4 602 status = acpi_evaluate_object(handle, method, &params, resultp);
1da177e4
LT		 603
604 switch (res_type) {
78f81cc4 605 case 'd': /* int */
263f4a30
HMH		 606 success = (status == AE_OK &&
607 out_obj.type == ACPI_TYPE_INTEGER);
608 if (success && res)
1da177e4 609 *(int *)res = out_obj.integer.value;
1da177e4 610 break;
78f81cc4 611 case 'v': /* void */
1da177e4
LT		 612 success = status == AE_OK;
613 break;
78f81cc4 614 /* add more types as needed */
1da177e4 615 default:
0978e012 616 pr_err("acpi_evalf() called "
1da177e4
LT		 617 "with invalid format character '%c'\n", res_type);
618 return 0;
619 }
620
56b6aeb0 621 if (!success && !quiet)
0978e012 622 pr_err("acpi_evalf(%s, %s, ...) failed: %s\n",
263f4a30 623 method, fmt0, acpi_format_exception(status));
56b6aeb0
HMH		 624
625 return success;
626}
627
35ff8b9f 628static int acpi_ec_read(int i, u8 *p)
56b6aeb0
HMH		 629{
630 int v;
631
632 if (ecrd_handle) {
633 if (!acpi_evalf(ecrd_handle, &v, NULL, "dd", i))
634 return 0;
635 *p = v;
636 } else {
637 if (ec_read(i, p) < 0)
638 return 0;
639 }
640
641 return 1;
642}
643
644static int acpi_ec_write(int i, u8 v)
645{
646 if (ecwr_handle) {
647 if (!acpi_evalf(ecwr_handle, NULL, NULL, "vdd", i, v))
648 return 0;
649 } else {
650 if (ec_write(i, v) < 0)
651 return 0;
652 }
653
654 return 1;
655}
656
c9bea99c
HMH		 657static int issue_thinkpad_cmos_command(int cmos_cmd)
658{
659 if (!cmos_handle)
660 return -ENXIO;
661
662 if (!acpi_evalf(cmos_handle, NULL, NULL, "vd", cmos_cmd))
663 return -EIO;
664
665 return 0;
666}
667
56b6aeb0
HMH		 668/*************************************************************************
669 * ACPI device model
670 */
671
35ff8b9f
HMH		 672#define TPACPI_ACPIHANDLE_INIT(object) \
673 drv_acpi_handle_init(#object, &object##_handle, *object##_parent, \
ef07a5ab 674 object##_paths, ARRAY_SIZE(object##_paths))
f74a27d4 675
ef07a5ab
HMH		 676static void __init drv_acpi_handle_init(const char *name,
677 acpi_handle *handle, const acpi_handle parent,
678 char **paths, const int num_paths)
56b6aeb0
HMH		 679{
680 int i;
681 acpi_status status;
682
5ae930e6
HMH		 683 vdbg_printk(TPACPI_DBG_INIT, "trying to locate ACPI handle for %s\n",
684 name);
685
56b6aeb0
HMH		 686 for (i = 0; i < num_paths; i++) {
687 status = acpi_get_handle(parent, paths[i], handle);
688 if (ACPI_SUCCESS(status)) {
5ae930e6
HMH		 689 dbg_printk(TPACPI_DBG_INIT,
690 "Found ACPI handle %s for %s\n",
ef07a5ab 691 paths[i], name);
56b6aeb0
HMH		 692 return;
693 }
694 }
695
5ae930e6
HMH		 696 vdbg_printk(TPACPI_DBG_INIT, "ACPI handle for %s not found\n",
697 name);
56b6aeb0
HMH		 698 *handle = NULL;
699}
700
437e470c
HMH		 701static acpi_status __init tpacpi_acpi_handle_locate_callback(acpi_handle handle,
702 u32 level, void *context, void **return_value)
703{
704 *(acpi_handle *)return_value = handle;
705
706 return AE_CTRL_TERMINATE;
707}
708
709static void __init tpacpi_acpi_handle_locate(const char *name,
710 const char *hid,
711 acpi_handle *handle)
712{
713 acpi_status status;
714 acpi_handle device_found;
715
716 BUG_ON(!name || !hid || !handle);
717 vdbg_printk(TPACPI_DBG_INIT,
718 "trying to locate ACPI handle for %s, using HID %s\n",
719 name, hid);
720
721 memset(&device_found, 0, sizeof(device_found));
722 status = acpi_get_devices(hid, tpacpi_acpi_handle_locate_callback,
723 (void *)name, &device_found);
724
725 *handle = NULL;
726
727 if (ACPI_SUCCESS(status)) {
728 *handle = device_found;
729 dbg_printk(TPACPI_DBG_INIT,
730 "Found ACPI handle for %s\n", name);
731 } else {
732 vdbg_printk(TPACPI_DBG_INIT,
733 "Could not locate an ACPI handle for %s: %s\n",
734 name, acpi_format_exception(status));
735 }
736}
737
8d376cd6 738static void dispatch_acpi_notify(acpi_handle handle, u32 event, void *data)
56b6aeb0
HMH		 739{
740 struct ibm_struct *ibm = data;
741
8fef502e
HMH		 742 if (tpacpi_lifecycle != TPACPI_LIFE_RUNNING)
743 return;
744
8d376cd6 745 if (!ibm || !ibm->acpi || !ibm->acpi->notify)
56b6aeb0
HMH		 746 return;
747
8d376cd6 748 ibm->acpi->notify(ibm, event);
56b6aeb0
HMH		 749}
750
8d376cd6 751static int __init setup_acpi_notify(struct ibm_struct *ibm)
56b6aeb0
HMH		 752{
753 acpi_status status;
5ae930e6 754 int rc;
56b6aeb0 755
8d376cd6
HMH		 756 BUG_ON(!ibm->acpi);
757
758 if (!*ibm->acpi->handle)
56b6aeb0
HMH		 759 return 0;
760
5ae930e6 761 vdbg_printk(TPACPI_DBG_INIT,
fe08bc4b
HMH		 762 "setting up ACPI notify for %s\n", ibm->name);
763
5ae930e6
HMH		 764 rc = acpi_bus_get_device(*ibm->acpi->handle, &ibm->acpi->device);
765 if (rc < 0) {
0978e012 766 pr_err("acpi_bus_get_device(%s) failed: %d\n", ibm->name, rc);
56b6aeb0
HMH		 767 return -ENODEV;
768 }
769
db89b4f0 770 ibm->acpi->device->driver_data = ibm;
8d376cd6 771 sprintf(acpi_device_class(ibm->acpi->device), "%s/%s",
e0c7dfe7 772 TPACPI_ACPI_EVENT_PREFIX,
643f12db 773 ibm->name);
56b6aeb0 774
8d376cd6
HMH		 775 status = acpi_install_notify_handler(*ibm->acpi->handle,
776 ibm->acpi->type, dispatch_acpi_notify, ibm);
56b6aeb0
HMH		 777 if (ACPI_FAILURE(status)) {
778 if (status == AE_ALREADY_EXISTS) {
0978e012
JP		 779 pr_notice("another device driver is already "
780 "handling %s events\n", ibm->name);
56b6aeb0 781 } else {
0978e012 782 pr_err("acpi_install_notify_handler(%s) failed: %s\n",
72f19921 783 ibm->name, acpi_format_exception(status));
56b6aeb0
HMH		 784 }
785 return -ENODEV;
786 }
8d376cd6 787 ibm->flags.acpi_notify_installed = 1;
56b6aeb0
HMH		 788 return 0;
789}
790
8d376cd6 791static int __init tpacpi_device_add(struct acpi_device *device)
56b6aeb0
HMH		 792{
793 return 0;
794}
795
6700121b 796static int __init register_tpacpi_subdriver(struct ibm_struct *ibm)
56b6aeb0 797{
5ae930e6 798 int rc;
56b6aeb0 799
fe08bc4b
HMH		 800 dbg_printk(TPACPI_DBG_INIT,
801 "registering %s as an ACPI driver\n", ibm->name);
802
8d376cd6
HMH		 803 BUG_ON(!ibm->acpi);
804
805 ibm->acpi->driver = kzalloc(sizeof(struct acpi_driver), GFP_KERNEL);
806 if (!ibm->acpi->driver) {
0978e012 807 pr_err("failed to allocate memory for ibm->acpi->driver\n");
5fba344c 808 return -ENOMEM;
56b6aeb0
HMH		 809 }
810
e0c7dfe7 811 sprintf(ibm->acpi->driver->name, "%s_%s", TPACPI_NAME, ibm->name);
8d376cd6 812 ibm->acpi->driver->ids = ibm->acpi->hid;
1ba90e3a 813
8d376cd6 814 ibm->acpi->driver->ops.add = &tpacpi_device_add;
56b6aeb0 815
5ae930e6
HMH		 816 rc = acpi_bus_register_driver(ibm->acpi->driver);
817 if (rc < 0) {
0978e012 818 pr_err("acpi_bus_register_driver(%s) failed: %d\n",
1ba90e3a 819 ibm->name, rc);
8d376cd6
HMH		 820 kfree(ibm->acpi->driver);
821 ibm->acpi->driver = NULL;
5ae930e6 822 } else if (!rc)
8d376cd6 823 ibm->flags.acpi_driver_registered = 1;
56b6aeb0 824
5ae930e6 825 return rc;
56b6aeb0
HMH		 826}
827
828
829/****************************************************************************
830 ****************************************************************************
831 *
832 * Procfs Helpers
833 *
834 ****************************************************************************
835 ****************************************************************************/
836
887965e6 837static int dispatch_proc_show(struct seq_file *m, void *v)
56b6aeb0 838{
887965e6 839 struct ibm_struct *ibm = m->private;
56b6aeb0
HMH		 840
841 if (!ibm || !ibm->read)
842 return -EINVAL;
887965e6
AD		 843 return ibm->read(m);
844}
56b6aeb0 845
887965e6
AD		 846static int dispatch_proc_open(struct inode *inode, struct file *file)
847{
848 return single_open(file, dispatch_proc_show, PDE(inode)->data);
56b6aeb0
HMH		 849}
850
887965e6 851static ssize_t dispatch_proc_write(struct file *file,
35ff8b9f 852 const char __user *userbuf,
887965e6 853 size_t count, loff_t *pos)
56b6aeb0 854{
887965e6 855 struct ibm_struct *ibm = PDE(file->f_path.dentry->d_inode)->data;
56b6aeb0
HMH		 856 char *kernbuf;
857 int ret;
858
859 if (!ibm || !ibm->write)
860 return -EINVAL;
5b05d469
MB		 861 if (count > PAGE_SIZE - 2)
862 return -EINVAL;
56b6aeb0
HMH		 863
864 kernbuf = kmalloc(count + 2, GFP_KERNEL);
865 if (!kernbuf)
866 return -ENOMEM;
1da177e4 867
56b6aeb0
HMH		 868 if (copy_from_user(kernbuf, userbuf, count)) {
869 kfree(kernbuf);
870 return -EFAULT;
871 }
1da177e4 872
56b6aeb0
HMH		 873 kernbuf[count] = 0;
874 strcat(kernbuf, ",");
875 ret = ibm->write(kernbuf);
876 if (ret == 0)
877 ret = count;
1da177e4 878
56b6aeb0
HMH		 879 kfree(kernbuf);
880
881 return ret;
1da177e4
LT		 882}
883
887965e6
AD		 884static const struct file_operations dispatch_proc_fops = {
885 .owner = THIS_MODULE,
886 .open = dispatch_proc_open,
887 .read = seq_read,
888 .llseek = seq_lseek,
889 .release = single_release,
890 .write = dispatch_proc_write,
891};
892
1da177e4
LT		 893static char *next_cmd(char **cmds)
894{
895 char *start = *cmds;
896 char *end;
897
898 while ((end = strchr(start, ',')) && end == start)
899 start = end + 1;
900
901 if (!end)
902 return NULL;
903
904 *end = 0;
905 *cmds = end + 1;
906 return start;
907}
908
56b6aeb0 909
54ae1501
HMH		 910/****************************************************************************
911 ****************************************************************************
912 *
7f5d1cd6 913 * Device model: input, hwmon and platform
54ae1501
HMH		 914 *
915 ****************************************************************************
916 ****************************************************************************/
917
94954cc6 918static struct platform_device *tpacpi_pdev;
7fd40029 919static struct platform_device *tpacpi_sensors_pdev;
1beeffe4 920static struct device *tpacpi_hwmon;
7f5d1cd6 921static struct input_dev *tpacpi_inputdev;
8523ed6f 922static struct mutex tpacpi_inputdev_send_mutex;
b21a15f6 923static LIST_HEAD(tpacpi_all_drivers);
e295e850 924
083f1760
HMH		 925static int tpacpi_suspend_handler(struct platform_device *pdev,
926 pm_message_t state)
927{
928 struct ibm_struct *ibm, *itmp;
929
930 list_for_each_entry_safe(ibm, itmp,
931 &tpacpi_all_drivers,
932 all_drivers) {
933 if (ibm->suspend)
934 (ibm->suspend)(state);
935 }
936
937 return 0;
938}
939
e295e850
HMH		 940static int tpacpi_resume_handler(struct platform_device *pdev)
941{
942 struct ibm_struct *ibm, *itmp;
943
944 list_for_each_entry_safe(ibm, itmp,
945 &tpacpi_all_drivers,
946 all_drivers) {
947 if (ibm->resume)
948 (ibm->resume)();
949 }
950
951 return 0;
952}
953
90d9d3c7
HMH		 954static void tpacpi_shutdown_handler(struct platform_device *pdev)
955{
956 struct ibm_struct *ibm, *itmp;
957
958 list_for_each_entry_safe(ibm, itmp,
959 &tpacpi_all_drivers,
960 all_drivers) {
961 if (ibm->shutdown)
962 (ibm->shutdown)();
963 }
964}
965
54ae1501
HMH		 966static struct platform_driver tpacpi_pdriver = {
967 .driver = {
e0c7dfe7 968 .name = TPACPI_DRVR_NAME,
54ae1501
HMH		 969 .owner = THIS_MODULE,
970 },
083f1760 971 .suspend = tpacpi_suspend_handler,
e295e850 972 .resume = tpacpi_resume_handler,
90d9d3c7 973 .shutdown = tpacpi_shutdown_handler,
54ae1501
HMH		 974};
975
7fd40029
HMH		 976static struct platform_driver tpacpi_hwmon_pdriver = {
977 .driver = {
e0c7dfe7 978 .name = TPACPI_HWMON_DRVR_NAME,
7fd40029
HMH		 979 .owner = THIS_MODULE,
980 },
981};
54ae1501 982
176750d6 983/*************************************************************************
b21a15f6 984 * sysfs support helpers
176750d6
HMH		 985 */
986
b21a15f6
HMH		 987struct attribute_set {
988 unsigned int members, max_members;
989 struct attribute_group group;
176750d6
HMH		 990};
991
7252374a
HMH		 992struct attribute_set_obj {
993 struct attribute_set s;
994 struct attribute *a;
995} __attribute__((packed));
996
997static struct attribute_set *create_attr_set(unsigned int max_members,
35ff8b9f 998 const char *name)
7252374a
HMH		 999{
1000 struct attribute_set_obj *sobj;
1001
1002 if (max_members == 0)
1003 return NULL;
1004
1005 /* Allocates space for implicit NULL at the end too */
1006 sobj = kzalloc(sizeof(struct attribute_set_obj) +
1007 max_members * sizeof(struct attribute *),
1008 GFP_KERNEL);
1009 if (!sobj)
1010 return NULL;
1011 sobj->s.max_members = max_members;
1012 sobj->s.group.attrs = &sobj->a;
1013 sobj->s.group.name = name;
1014
1015 return &sobj->s;
1016}
1017
f74a27d4
HMH		 1018#define destroy_attr_set(_set) \
1019 kfree(_set);
1020
7252374a 1021/* not multi-threaded safe, use it in a single thread per set */
35ff8b9f 1022static int add_to_attr_set(struct attribute_set *s, struct attribute *attr)
7252374a
HMH		 1023{
1024 if (!s || !attr)
1025 return -EINVAL;
1026
1027 if (s->members >= s->max_members)
1028 return -ENOMEM;
1029
1030 s->group.attrs[s->members] = attr;
1031 s->members++;
1032
1033 return 0;
1034}
1035
35ff8b9f 1036static int add_many_to_attr_set(struct attribute_set *s,
7252374a
HMH		 1037 struct attribute **attr,
1038 unsigned int count)
1039{
1040 int i, res;
1041
1042 for (i = 0; i < count; i++) {
1043 res = add_to_attr_set(s, attr[i]);
1044 if (res)
1045 return res;
1046 }
1047
1048 return 0;
1049}
1050
35ff8b9f 1051static void delete_attr_set(struct attribute_set *s, struct kobject *kobj)
7252374a
HMH		 1052{
1053 sysfs_remove_group(kobj, &s->group);
1054 destroy_attr_set(s);
1055}
1056
f74a27d4
HMH		 1057#define register_attr_set_with_sysfs(_attr_set, _kobj) \
1058 sysfs_create_group(_kobj, &_attr_set->group)
1059
7252374a
HMH		 1060static int parse_strtoul(const char *buf,
1061 unsigned long max, unsigned long *value)
1062{
1063 char *endp;
1064
e7d2860b
AGR		 1065 *value = simple_strtoul(skip_spaces(buf), &endp, 0);
1066 endp = skip_spaces(endp);
7252374a
HMH		 1067 if (*endp || *value > max)
1068 return -EINVAL;
1069
1070 return 0;
1071}
1072
d64c81c4
HMH		 1073static void tpacpi_disable_brightness_delay(void)
1074{
1075 if (acpi_evalf(hkey_handle, NULL, "PWMS", "qvd", 0))
0978e012 1076 pr_notice("ACPI backlight control delay disabled\n");
d64c81c4
HMH		 1077}
1078
19d337df
JB		 1079static void printk_deprecated_attribute(const char * const what,
1080 const char * const details)
1081{
1082 tpacpi_log_usertask("deprecated sysfs attribute");
0978e012 1083 pr_warn("WARNING: sysfs attribute %s is deprecated and "
19d337df
JB		 1084 "will be removed. %s\n",
1085 what, details);
1086}
1087
1088/*************************************************************************
1089 * rfkill and radio control support helpers
1090 */
1091
1092/*
1093 * ThinkPad-ACPI firmware handling model:
1094 *
1095 * WLSW (master wireless switch) is event-driven, and is common to all
1096 * firmware-controlled radios. It cannot be controlled, just monitored,
1097 * as expected. It overrides all radio state in firmware
1098 *
1099 * The kernel, a masked-off hotkey, and WLSW can change the radio state
1100 * (TODO: verify how WLSW interacts with the returned radio state).
1101 *
1102 * The only time there are shadow radio state changes, is when
1103 * masked-off hotkeys are used.
1104 */
1105
1106/*
1107 * Internal driver API for radio state:
1108 *
1109 * int: < 0 = error, otherwise enum tpacpi_rfkill_state
1110 * bool: true means radio blocked (off)
1111 */
1112enum tpacpi_rfkill_state {
1113 TPACPI_RFK_RADIO_OFF = 0,
1114 TPACPI_RFK_RADIO_ON
1115};
1116
1117/* rfkill switches */
1118enum tpacpi_rfk_id {
1119 TPACPI_RFK_BLUETOOTH_SW_ID = 0,
1120 TPACPI_RFK_WWAN_SW_ID,
1121 TPACPI_RFK_UWB_SW_ID,
1122 TPACPI_RFK_SW_MAX
1123};
1124
1125static const char *tpacpi_rfkill_names[] = {
1126 [TPACPI_RFK_BLUETOOTH_SW_ID] = "bluetooth",
1127 [TPACPI_RFK_WWAN_SW_ID] = "wwan",
1128 [TPACPI_RFK_UWB_SW_ID] = "uwb",
1129 [TPACPI_RFK_SW_MAX] = NULL
1130};
1131
1132/* ThinkPad-ACPI rfkill subdriver */
1133struct tpacpi_rfk {
1134 struct rfkill *rfkill;
1135 enum tpacpi_rfk_id id;
1136 const struct tpacpi_rfk_ops *ops;
1137};
1138
1139struct tpacpi_rfk_ops {
1140 /* firmware interface */
1141 int (*get_status)(void);
1142 int (*set_status)(const enum tpacpi_rfkill_state);
1143};
1144
1145static struct tpacpi_rfk *tpacpi_rfkill_switches[TPACPI_RFK_SW_MAX];
1146
1147/* Query FW and update rfkill sw state for a given rfkill switch */
1148static int tpacpi_rfk_update_swstate(const struct tpacpi_rfk *tp_rfk)
1149{
1150 int status;
1151
1152 if (!tp_rfk)
1153 return -ENODEV;
1154
1155 status = (tp_rfk->ops->get_status)();
1156 if (status < 0)
1157 return status;
1158
1159 rfkill_set_sw_state(tp_rfk->rfkill,
1160 (status == TPACPI_RFK_RADIO_OFF));
1161
1162 return status;
1163}
1164
1165/* Query FW and update rfkill sw state for all rfkill switches */
1166static void tpacpi_rfk_update_swstate_all(void)
1167{
1168 unsigned int i;
1169
1170 for (i = 0; i < TPACPI_RFK_SW_MAX; i++)
1171 tpacpi_rfk_update_swstate(tpacpi_rfkill_switches[i]);
1172}
1173
1174/*
1175 * Sync the HW-blocking state of all rfkill switches,
1176 * do notice it causes the rfkill core to schedule uevents
1177 */
1178static void tpacpi_rfk_update_hwblock_state(bool blocked)
1179{
1180 unsigned int i;
1181 struct tpacpi_rfk *tp_rfk;
1182
1183 for (i = 0; i < TPACPI_RFK_SW_MAX; i++) {
1184 tp_rfk = tpacpi_rfkill_switches[i];
1185 if (tp_rfk) {
1186 if (rfkill_set_hw_state(tp_rfk->rfkill,
1187 blocked)) {
1188 /* ignore -- we track sw block */
1189 }
1190 }
1191 }
1192}
1193
1194/* Call to get the WLSW state from the firmware */
1195static int hotkey_get_wlsw(void);
1196
1197/* Call to query WLSW state and update all rfkill switches */
1198static bool tpacpi_rfk_check_hwblock_state(void)
1199{
1200 int res = hotkey_get_wlsw();
1201 int hw_blocked;
1202
1203 /* When unknown or unsupported, we have to assume it is unblocked */
1204 if (res < 0)
1205 return false;
1206
1207 hw_blocked = (res == TPACPI_RFK_RADIO_OFF);
1208 tpacpi_rfk_update_hwblock_state(hw_blocked);
1209
1210 return hw_blocked;
1211}
1212
1213static int tpacpi_rfk_hook_set_block(void *data, bool blocked)
1214{
1215 struct tpacpi_rfk *tp_rfk = data;
1216 int res;
1217
1218 dbg_printk(TPACPI_DBG_RFKILL,
1219 "request to change radio state to %s\n",
1220 blocked ? "blocked" : "unblocked");
1221
1222 /* try to set radio state */
1223 res = (tp_rfk->ops->set_status)(blocked ?
1224 TPACPI_RFK_RADIO_OFF : TPACPI_RFK_RADIO_ON);
1225
1226 /* and update the rfkill core with whatever the FW really did */
1227 tpacpi_rfk_update_swstate(tp_rfk);
1228
1229 return (res < 0) ? res : 0;
1230}
1231
1232static const struct rfkill_ops tpacpi_rfk_rfkill_ops = {
1233 .set_block = tpacpi_rfk_hook_set_block,
1234};
1235
1236static int __init tpacpi_new_rfkill(const enum tpacpi_rfk_id id,
1237 const struct tpacpi_rfk_ops *tp_rfkops,
0e74dc26
HMH		 1238 const enum rfkill_type rfktype,
1239 const char *name,
19d337df 1240 const bool set_default)
0e74dc26 1241{
19d337df 1242 struct tpacpi_rfk *atp_rfk;
0e74dc26 1243 int res;
06d5caf4 1244 bool sw_state = false;
5451a923 1245 bool hw_state;
06d5caf4 1246 int sw_status;
90d9d3c7 1247
19d337df
JB		 1248 BUG_ON(id >= TPACPI_RFK_SW_MAX || tpacpi_rfkill_switches[id]);
1249
19d337df
JB		 1250 atp_rfk = kzalloc(sizeof(struct tpacpi_rfk), GFP_KERNEL);
1251 if (atp_rfk)
1252 atp_rfk->rfkill = rfkill_alloc(name,
1253 &tpacpi_pdev->dev,
1254 rfktype,
1255 &tpacpi_rfk_rfkill_ops,
1256 atp_rfk);
1257 if (!atp_rfk || !atp_rfk->rfkill) {
0978e012 1258 pr_err("failed to allocate memory for rfkill class\n");
19d337df 1259 kfree(atp_rfk);
0e74dc26
HMH		 1260 return -ENOMEM;
1261 }
1262
19d337df
JB		 1263 atp_rfk->id = id;
1264 atp_rfk->ops = tp_rfkops;
0e74dc26 1265
06d5caf4
AJ		 1266 sw_status = (tp_rfkops->get_status)();
1267 if (sw_status < 0) {
0978e012
JP		 1268 pr_err("failed to read initial state for %s, error %d\n",
1269 name, sw_status);
b3fa1329 1270 } else {
06d5caf4 1271 sw_state = (sw_status == TPACPI_RFK_RADIO_OFF);
b3fa1329
AJ		 1272 if (set_default) {
1273 /* try to keep the initial state, since we ask the
1274 * firmware to preserve it across S5 in NVRAM */
06d5caf4 1275 rfkill_init_sw_state(atp_rfk->rfkill, sw_state);
b3fa1329
AJ		 1276 }
1277 }
5451a923
HMH		 1278 hw_state = tpacpi_rfk_check_hwblock_state();
1279 rfkill_set_hw_state(atp_rfk->rfkill, hw_state);
19d337df
JB		 1280
1281 res = rfkill_register(atp_rfk->rfkill);
0e74dc26 1282 if (res < 0) {
0978e012 1283 pr_err("failed to register %s rfkill switch: %d\n", name, res);
19d337df
JB		 1284 rfkill_destroy(atp_rfk->rfkill);
1285 kfree(atp_rfk);
0e74dc26
HMH		 1286 return res;
1287 }
1288
19d337df 1289 tpacpi_rfkill_switches[id] = atp_rfk;
5451a923 1290
0978e012 1291 pr_info("rfkill switch %s: radio is %sblocked\n",
5451a923 1292 name, (sw_state || hw_state) ? "" : "un");
0e74dc26
HMH		 1293 return 0;
1294}
1295
19d337df 1296static void tpacpi_destroy_rfkill(const enum tpacpi_rfk_id id)
73a94d86 1297{
19d337df
JB		 1298 struct tpacpi_rfk *tp_rfk;
1299
1300 BUG_ON(id >= TPACPI_RFK_SW_MAX);
1301
1302 tp_rfk = tpacpi_rfkill_switches[id];
1303 if (tp_rfk) {
1304 rfkill_unregister(tp_rfk->rfkill);
5f0dadb4 1305 rfkill_destroy(tp_rfk->rfkill);
19d337df
JB		 1306 tpacpi_rfkill_switches[id] = NULL;
1307 kfree(tp_rfk);
1308 }
73a94d86
HMH		 1309}
1310
1311static void printk_deprecated_rfkill_attribute(const char * const what)
1312{
1313 printk_deprecated_attribute(what,
1314 "Please switch to generic rfkill before year 2010");
1315}
1316
19d337df
JB		 1317/* sysfs <radio> enable ------------------------------------------------ */
1318static ssize_t tpacpi_rfk_sysfs_enable_show(const enum tpacpi_rfk_id id,
1319 struct device_attribute *attr,
1320 char *buf)
1321{
1322 int status;
1323
1324 printk_deprecated_rfkill_attribute(attr->attr.name);
1325
1326 /* This is in the ABI... */
1327 if (tpacpi_rfk_check_hwblock_state()) {
1328 status = TPACPI_RFK_RADIO_OFF;
1329 } else {
1330 status = tpacpi_rfk_update_swstate(tpacpi_rfkill_switches[id]);
1331 if (status < 0)
1332 return status;
1333 }
1334
1335 return snprintf(buf, PAGE_SIZE, "%d\n",
1336 (status == TPACPI_RFK_RADIO_ON) ? 1 : 0);
1337}
1338
1339static ssize_t tpacpi_rfk_sysfs_enable_store(const enum tpacpi_rfk_id id,
1340 struct device_attribute *attr,
1341 const char *buf, size_t count)
1342{
1343 unsigned long t;
1344 int res;
1345
1346 printk_deprecated_rfkill_attribute(attr->attr.name);
1347
1348 if (parse_strtoul(buf, 1, &t))
1349 return -EINVAL;
1350
1351 tpacpi_disclose_usertask(attr->attr.name, "set to %ld\n", t);
1352
1353 /* This is in the ABI... */
1354 if (tpacpi_rfk_check_hwblock_state() && !!t)
1355 return -EPERM;
1356
1357 res = tpacpi_rfkill_switches[id]->ops->set_status((!!t) ?
1358 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF);
1359 tpacpi_rfk_update_swstate(tpacpi_rfkill_switches[id]);
1360
1361 return (res < 0) ? res : count;
1362}
1363
1364/* procfs -------------------------------------------------------------- */
887965e6 1365static int tpacpi_rfk_procfs_read(const enum tpacpi_rfk_id id, struct seq_file *m)
19d337df 1366{
19d337df 1367 if (id >= TPACPI_RFK_SW_MAX)
887965e6 1368 seq_printf(m, "status:\t\tnot supported\n");
19d337df
JB		 1369 else {
1370 int status;
1371
1372 /* This is in the ABI... */
1373 if (tpacpi_rfk_check_hwblock_state()) {
1374 status = TPACPI_RFK_RADIO_OFF;
1375 } else {
1376 status = tpacpi_rfk_update_swstate(
1377 tpacpi_rfkill_switches[id]);
1378 if (status < 0)
1379 return status;
1380 }
1381
887965e6 1382 seq_printf(m, "status:\t\t%s\n",
19d337df
JB		 1383 (status == TPACPI_RFK_RADIO_ON) ?
1384 "enabled" : "disabled");
887965e6 1385 seq_printf(m, "commands:\tenable, disable\n");
19d337df
JB		 1386 }
1387
887965e6 1388 return 0;
19d337df
JB		 1389}
1390
1391static int tpacpi_rfk_procfs_write(const enum tpacpi_rfk_id id, char *buf)
1392{
1393 char *cmd;
1394 int status = -1;
1395 int res = 0;
1396
1397 if (id >= TPACPI_RFK_SW_MAX)
1398 return -ENODEV;
1399
1400 while ((cmd = next_cmd(&buf))) {
1401 if (strlencmp(cmd, "enable") == 0)
1402 status = TPACPI_RFK_RADIO_ON;
1403 else if (strlencmp(cmd, "disable") == 0)
1404 status = TPACPI_RFK_RADIO_OFF;
1405 else
1406 return -EINVAL;
1407 }
1408
1409 if (status != -1) {
1410 tpacpi_disclose_usertask("procfs", "attempt to %s %s\n",
1411 (status == TPACPI_RFK_RADIO_ON) ?
1412 "enable" : "disable",
1413 tpacpi_rfkill_names[id]);
1414 res = (tpacpi_rfkill_switches[id]->ops->set_status)(status);
1415 tpacpi_rfk_update_swstate(tpacpi_rfkill_switches[id]);
1416 }
1417
1418 return res;
1419}
1420
56b6aeb0 1421/*************************************************************************
b21a15f6 1422 * thinkpad-acpi driver attributes
56b6aeb0
HMH		 1423 */
1424
b21a15f6
HMH		 1425/* interface_version --------------------------------------------------- */
1426static ssize_t tpacpi_driver_interface_version_show(
1427 struct device_driver *drv,
1428 char *buf)
1da177e4 1429{
b21a15f6
HMH		 1430 return snprintf(buf, PAGE_SIZE, "0x%08x\n", TPACPI_SYSFS_VERSION);
1431}
1432
1433static DRIVER_ATTR(interface_version, S_IRUGO,
1434 tpacpi_driver_interface_version_show, NULL);
1435
1436/* debug_level --------------------------------------------------------- */
1437static ssize_t tpacpi_driver_debug_show(struct device_driver *drv,
1438 char *buf)
1439{
1440 return snprintf(buf, PAGE_SIZE, "0x%04x\n", dbg_level);
1441}
1442
1443static ssize_t tpacpi_driver_debug_store(struct device_driver *drv,
1444 const char *buf, size_t count)
1445{
1446 unsigned long t;
1447
1448 if (parse_strtoul(buf, 0xffff, &t))
1449 return -EINVAL;
1450
1451 dbg_level = t;
1452
1453 return count;
1454}
1455
1456static DRIVER_ATTR(debug_level, S_IWUSR | S_IRUGO,
1457 tpacpi_driver_debug_show, tpacpi_driver_debug_store);
1458
1459/* version ------------------------------------------------------------- */
1460static ssize_t tpacpi_driver_version_show(struct device_driver *drv,
1461 char *buf)
1462{
35ff8b9f
HMH		 1463 return snprintf(buf, PAGE_SIZE, "%s v%s\n",
1464 TPACPI_DESC, TPACPI_VERSION);
b21a15f6
HMH		 1465}
1466
1467static DRIVER_ATTR(version, S_IRUGO,
1468 tpacpi_driver_version_show, NULL);
1469
1470/* --------------------------------------------------------------------- */
1471
a73f3091
HMH		 1472#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
1473
a73f3091
HMH		 1474/* wlsw_emulstate ------------------------------------------------------ */
1475static ssize_t tpacpi_driver_wlsw_emulstate_show(struct device_driver *drv,
1476 char *buf)
1477{
1478 return snprintf(buf, PAGE_SIZE, "%d\n", !!tpacpi_wlsw_emulstate);
1479}
1480
1481static ssize_t tpacpi_driver_wlsw_emulstate_store(struct device_driver *drv,
1482 const char *buf, size_t count)
1483{
1484 unsigned long t;
1485
1486 if (parse_strtoul(buf, 1, &t))
1487 return -EINVAL;
1488
19d337df 1489 if (tpacpi_wlsw_emulstate != !!t) {
a73f3091 1490 tpacpi_wlsw_emulstate = !!t;
19d337df
JB		 1491 tpacpi_rfk_update_hwblock_state(!t); /* negative logic */
1492 }
a73f3091
HMH		 1493
1494 return count;
1495}
1496
1497static DRIVER_ATTR(wlsw_emulstate, S_IWUSR | S_IRUGO,
1498 tpacpi_driver_wlsw_emulstate_show,
1499 tpacpi_driver_wlsw_emulstate_store);
1500
1501/* bluetooth_emulstate ------------------------------------------------- */
1502static ssize_t tpacpi_driver_bluetooth_emulstate_show(
1503 struct device_driver *drv,
1504 char *buf)
1505{
1506 return snprintf(buf, PAGE_SIZE, "%d\n", !!tpacpi_bluetooth_emulstate);
1507}
1508
1509static ssize_t tpacpi_driver_bluetooth_emulstate_store(
1510 struct device_driver *drv,
1511 const char *buf, size_t count)
1512{
1513 unsigned long t;
1514
1515 if (parse_strtoul(buf, 1, &t))
1516 return -EINVAL;
1517
1518 tpacpi_bluetooth_emulstate = !!t;
1519
1520 return count;
1521}
1522
1523static DRIVER_ATTR(bluetooth_emulstate, S_IWUSR | S_IRUGO,
1524 tpacpi_driver_bluetooth_emulstate_show,
1525 tpacpi_driver_bluetooth_emulstate_store);
1526
1527/* wwan_emulstate ------------------------------------------------- */
1528static ssize_t tpacpi_driver_wwan_emulstate_show(
1529 struct device_driver *drv,
1530 char *buf)
1531{
1532 return snprintf(buf, PAGE_SIZE, "%d\n", !!tpacpi_wwan_emulstate);
1533}
1534
1535static ssize_t tpacpi_driver_wwan_emulstate_store(
1536 struct device_driver *drv,
1537 const char *buf, size_t count)
1538{
1539 unsigned long t;
1540
1541 if (parse_strtoul(buf, 1, &t))
1542 return -EINVAL;
1543
1544 tpacpi_wwan_emulstate = !!t;
1545
1546 return count;
1547}
1548
1549static DRIVER_ATTR(wwan_emulstate, S_IWUSR | S_IRUGO,
1550 tpacpi_driver_wwan_emulstate_show,
1551 tpacpi_driver_wwan_emulstate_store);
1552
0045c0aa
HMH		 1553/* uwb_emulstate ------------------------------------------------- */
1554static ssize_t tpacpi_driver_uwb_emulstate_show(
1555 struct device_driver *drv,
1556 char *buf)
1557{
1558 return snprintf(buf, PAGE_SIZE, "%d\n", !!tpacpi_uwb_emulstate);
1559}
1560
1561static ssize_t tpacpi_driver_uwb_emulstate_store(
1562 struct device_driver *drv,
1563 const char *buf, size_t count)
1564{
1565 unsigned long t;
1566
1567 if (parse_strtoul(buf, 1, &t))
1568 return -EINVAL;
1569
1570 tpacpi_uwb_emulstate = !!t;
1571
1572 return count;
1573}
1574
1575static DRIVER_ATTR(uwb_emulstate, S_IWUSR | S_IRUGO,
1576 tpacpi_driver_uwb_emulstate_show,
1577 tpacpi_driver_uwb_emulstate_store);
a73f3091
HMH		 1578#endif
1579
1580/* --------------------------------------------------------------------- */
1581
35ff8b9f 1582static struct driver_attribute *tpacpi_driver_attributes[] = {
b21a15f6
HMH		 1583 &driver_attr_debug_level, &driver_attr_version,
1584 &driver_attr_interface_version,
1585};
1586
1587static int __init tpacpi_create_driver_attributes(struct device_driver *drv)
1588{
1589 int i, res;
1590
1591 i = 0;
1592 res = 0;
1593 while (!res && i < ARRAY_SIZE(tpacpi_driver_attributes)) {
1594 res = driver_create_file(drv, tpacpi_driver_attributes[i]);
1595 i++;
1596 }
1597
a73f3091
HMH		 1598#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
1599 if (!res && dbg_wlswemul)
1600 res = driver_create_file(drv, &driver_attr_wlsw_emulstate);
1601 if (!res && dbg_bluetoothemul)
1602 res = driver_create_file(drv, &driver_attr_bluetooth_emulstate);
1603 if (!res && dbg_wwanemul)
1604 res = driver_create_file(drv, &driver_attr_wwan_emulstate);
0045c0aa
HMH		 1605 if (!res && dbg_uwbemul)
1606 res = driver_create_file(drv, &driver_attr_uwb_emulstate);
a73f3091
HMH		 1607#endif
1608
b21a15f6
HMH		 1609 return res;
1610}
1611
1612static void tpacpi_remove_driver_attributes(struct device_driver *drv)
1613{
1614 int i;
1615
35ff8b9f 1616 for (i = 0; i < ARRAY_SIZE(tpacpi_driver_attributes); i++)
b21a15f6 1617 driver_remove_file(drv, tpacpi_driver_attributes[i]);
a73f3091
HMH		 1618
1619#ifdef THINKPAD_ACPI_DEBUGFACILITIES
1620 driver_remove_file(drv, &driver_attr_wlsw_emulstate);
1621 driver_remove_file(drv, &driver_attr_bluetooth_emulstate);
1622 driver_remove_file(drv, &driver_attr_wwan_emulstate);
0045c0aa 1623 driver_remove_file(drv, &driver_attr_uwb_emulstate);
a73f3091 1624#endif
b21a15f6
HMH		 1625}
1626
600a99fa
HMH		 1627/*************************************************************************
1628 * Firmware Data
1629 */
1630
1631/*
1632 * Table of recommended minimum BIOS versions
1633 *
1634 * Reasons for listing:
9ddc5b6f 1635 * 1. Stable BIOS, listed because the unknown amount of
600a99fa
HMH		 1636 * bugs and bad ACPI behaviour on older versions
1637 *
1638 * 2. BIOS or EC fw with known bugs that trigger on Linux
1639 *
1640 * 3. BIOS with known reduced functionality in older versions
1641 *
1642 * We recommend the latest BIOS and EC version.
1643 * We only support the latest BIOS and EC fw version as a rule.
1644 *
1645 * Sources: IBM ThinkPad Public Web Documents (update changelogs),
1646 * Information from users in ThinkWiki
e675abaf
HMH		 1647 *
1648 * WARNING: we use this table also to detect that the machine is
1649 * a ThinkPad in some cases, so don't remove entries lightly.
600a99fa
HMH		 1650 */
1651
1652#define TPV_Q(__v, __id1, __id2, __bv1, __bv2) \
1653 { .vendor = (__v), \
1654 .bios = TPID(__id1, __id2), \
1655 .ec = TPACPI_MATCH_ANY, \
1656 .quirks = TPACPI_MATCH_ANY << 16 \
1657 | (__bv1) << 8 | (__bv2) }
1658
1659#define TPV_Q_X(__v, __bid1, __bid2, __bv1, __bv2, \
275014ae 1660 __eid, __ev1, __ev2) \
600a99fa
HMH		 1661 { .vendor = (__v), \
1662 .bios = TPID(__bid1, __bid2), \
275014ae 1663 .ec = __eid, \
600a99fa
HMH		 1664 .quirks = (__ev1) << 24 | (__ev2) << 16 \
1665 | (__bv1) << 8 | (__bv2) }
1666
1667#define TPV_QI0(__id1, __id2, __bv1, __bv2) \
1668 TPV_Q(PCI_VENDOR_ID_IBM, __id1, __id2, __bv1, __bv2)
1669
275014ae 1670/* Outdated IBM BIOSes often lack the EC id string */
600a99fa
HMH		 1671#define TPV_QI1(__id1, __id2, __bv1, __bv2, __ev1, __ev2) \
1672 TPV_Q_X(PCI_VENDOR_ID_IBM, __id1, __id2, \
275014ae
HMH		 1673 __bv1, __bv2, TPID(__id1, __id2), \
1674 __ev1, __ev2), \
1675 TPV_Q_X(PCI_VENDOR_ID_IBM, __id1, __id2, \
1676 __bv1, __bv2, TPACPI_MATCH_UNKNOWN, \
1677 __ev1, __ev2)
600a99fa 1678
275014ae 1679/* Outdated IBM BIOSes often lack the EC id string */
600a99fa
HMH		 1680#define TPV_QI2(__bid1, __bid2, __bv1, __bv2, \
1681 __eid1, __eid2, __ev1, __ev2) \
1682 TPV_Q_X(PCI_VENDOR_ID_IBM, __bid1, __bid2, \
275014ae
HMH		 1683 __bv1, __bv2, TPID(__eid1, __eid2), \
1684 __ev1, __ev2), \
1685 TPV_Q_X(PCI_VENDOR_ID_IBM, __bid1, __bid2, \
1686 __bv1, __bv2, TPACPI_MATCH_UNKNOWN, \
1687 __ev1, __ev2)
600a99fa
HMH		 1688
1689#define TPV_QL0(__id1, __id2, __bv1, __bv2) \
1690 TPV_Q(PCI_VENDOR_ID_LENOVO, __id1, __id2, __bv1, __bv2)
1691
1692#define TPV_QL1(__id1, __id2, __bv1, __bv2, __ev1, __ev2) \
1693 TPV_Q_X(PCI_VENDOR_ID_LENOVO, __id1, __id2, \
275014ae
HMH		 1694 __bv1, __bv2, TPID(__id1, __id2), \
1695 __ev1, __ev2)
600a99fa
HMH		 1696
1697#define TPV_QL2(__bid1, __bid2, __bv1, __bv2, \
1698 __eid1, __eid2, __ev1, __ev2) \
1699 TPV_Q_X(PCI_VENDOR_ID_LENOVO, __bid1, __bid2, \
275014ae
HMH		 1700 __bv1, __bv2, TPID(__eid1, __eid2), \
1701 __ev1, __ev2)
600a99fa
HMH		 1702
1703static const struct tpacpi_quirk tpacpi_bios_version_qtable[] __initconst = {
1704 /* Numeric models ------------------ */
1705 /* FW MODEL BIOS VERS */
1706 TPV_QI0('I', 'M', '6', '5'), /* 570 */
1707 TPV_QI0('I', 'U', '2', '6'), /* 570E */
1708 TPV_QI0('I', 'B', '5', '4'), /* 600 */
1709 TPV_QI0('I', 'H', '4', '7'), /* 600E */
1710 TPV_QI0('I', 'N', '3', '6'), /* 600E */
1711 TPV_QI0('I', 'T', '5', '5'), /* 600X */
1712 TPV_QI0('I', 'D', '4', '8'), /* 770, 770E, 770ED */
1713 TPV_QI0('I', 'I', '4', '2'), /* 770X */
1714 TPV_QI0('I', 'O', '2', '3'), /* 770Z */
1715
1716 /* A-series ------------------------- */
1717 /* FW MODEL BIOS VERS EC VERS */
1718 TPV_QI0('I', 'W', '5', '9'), /* A20m */
1719 TPV_QI0('I', 'V', '6', '9'), /* A20p */
1720 TPV_QI0('1', '0', '2', '6'), /* A21e, A22e */
1721 TPV_QI0('K', 'U', '3', '6'), /* A21e */
1722 TPV_QI0('K', 'X', '3', '6'), /* A21m, A22m */
1723 TPV_QI0('K', 'Y', '3', '8'), /* A21p, A22p */
1724 TPV_QI0('1', 'B', '1', '7'), /* A22e */
1725 TPV_QI0('1', '3', '2', '0'), /* A22m */
1726 TPV_QI0('1', 'E', '7', '3'), /* A30/p (0) */
1727 TPV_QI1('1', 'G', '4', '1', '1', '7'), /* A31/p (0) */
1728 TPV_QI1('1', 'N', '1', '6', '0', '7'), /* A31/p (0) */
1729
1730 /* G-series ------------------------- */
1731 /* FW MODEL BIOS VERS */
1732 TPV_QI0('1', 'T', 'A', '6'), /* G40 */
1733 TPV_QI0('1', 'X', '5', '7'), /* G41 */
1734
1735 /* R-series, T-series --------------- */
1736 /* FW MODEL BIOS VERS EC VERS */
1737 TPV_QI0('1', 'C', 'F', '0'), /* R30 */
1738 TPV_QI0('1', 'F', 'F', '1'), /* R31 */
1739 TPV_QI0('1', 'M', '9', '7'), /* R32 */
1740 TPV_QI0('1', 'O', '6', '1'), /* R40 */
1741 TPV_QI0('1', 'P', '6', '5'), /* R40 */
1742 TPV_QI0('1', 'S', '7', '0'), /* R40e */
1743 TPV_QI1('1', 'R', 'D', 'R', '7', '1'), /* R50/p, R51,
1744 T40/p, T41/p, T42/p (1) */
1745 TPV_QI1('1', 'V', '7', '1', '2', '8'), /* R50e, R51 (1) */
1746 TPV_QI1('7', '8', '7', '1', '0', '6'), /* R51e (1) */
1747 TPV_QI1('7', '6', '6', '9', '1', '6'), /* R52 (1) */
1748 TPV_QI1('7', '0', '6', '9', '2', '8'), /* R52, T43 (1) */
1749
1750 TPV_QI0('I', 'Y', '6', '1'), /* T20 */
1751 TPV_QI0('K', 'Z', '3', '4'), /* T21 */
1752 TPV_QI0('1', '6', '3', '2'), /* T22 */
1753 TPV_QI1('1', 'A', '6', '4', '2', '3'), /* T23 (0) */
1754 TPV_QI1('1', 'I', '7', '1', '2', '0'), /* T30 (0) */
1755 TPV_QI1('1', 'Y', '6', '5', '2', '9'), /* T43/p (1) */
1756
1757 TPV_QL1('7', '9', 'E', '3', '5', '0'), /* T60/p */
1758 TPV_QL1('7', 'C', 'D', '2', '2', '2'), /* R60, R60i */
90765c6a 1759 TPV_QL1('7', 'E', 'D', '0', '1', '5'), /* R60e, R60i */
600a99fa
HMH		 1760
1761 /* BIOS FW BIOS VERS EC FW EC VERS */
1762 TPV_QI2('1', 'W', '9', '0', '1', 'V', '2', '8'), /* R50e (1) */
1763 TPV_QL2('7', 'I', '3', '4', '7', '9', '5', '0'), /* T60/p wide */
1764
1765 /* X-series ------------------------- */
1766 /* FW MODEL BIOS VERS EC VERS */
1767 TPV_QI0('I', 'Z', '9', 'D'), /* X20, X21 */
1768 TPV_QI0('1', 'D', '7', '0'), /* X22, X23, X24 */
1769 TPV_QI1('1', 'K', '4', '8', '1', '8'), /* X30 (0) */
1770 TPV_QI1('1', 'Q', '9', '7', '2', '3'), /* X31, X32 (0) */
1771 TPV_QI1('1', 'U', 'D', '3', 'B', '2'), /* X40 (0) */
1772 TPV_QI1('7', '4', '6', '4', '2', '7'), /* X41 (0) */
1773 TPV_QI1('7', '5', '6', '0', '2', '0'), /* X41t (0) */
1774
90765c6a
HMH		 1775 TPV_QL1('7', 'B', 'D', '7', '4', '0'), /* X60/s */
1776 TPV_QL1('7', 'J', '3', '0', '1', '3'), /* X60t */
600a99fa
HMH		 1777
1778 /* (0) - older versions lack DMI EC fw string and functionality */
1779 /* (1) - older versions known to lack functionality */
1780};
1781
1782#undef TPV_QL1
1783#undef TPV_QL0
1784#undef TPV_QI2
1785#undef TPV_QI1
1786#undef TPV_QI0
1787#undef TPV_Q_X
1788#undef TPV_Q
1789
1790static void __init tpacpi_check_outdated_fw(void)
1791{
1792 unsigned long fwvers;
1793 u16 ec_version, bios_version;
1794
1795 fwvers = tpacpi_check_quirks(tpacpi_bios_version_qtable,
1796 ARRAY_SIZE(tpacpi_bios_version_qtable));
1797
1798 if (!fwvers)
1799 return;
1800
1801 bios_version = fwvers & 0xffffU;
1802 ec_version = (fwvers >> 16) & 0xffffU;
1803
1804 /* note that unknown versions are set to 0x0000 and we use that */
1805 if ((bios_version > thinkpad_id.bios_release) ||
1806 (ec_version > thinkpad_id.ec_release &&
1807 ec_version != TPACPI_MATCH_ANY)) {
1808 /*
1809 * The changelogs would let us track down the exact
1810 * reason, but it is just too much of a pain to track
1811 * it. We only list BIOSes that are either really
1812 * broken, or really stable to begin with, so it is
1813 * best if the user upgrades the firmware anyway.
1814 */
0978e012
JP		 1815 pr_warn("WARNING: Outdated ThinkPad BIOS/EC firmware\n");
1816 pr_warn("WARNING: This firmware may be missing critical bug "
600a99fa
HMH		 1817 "fixes and/or important features\n");
1818 }
1819}
1820
e675abaf
HMH		 1821static bool __init tpacpi_is_fw_known(void)
1822{
1823 return tpacpi_check_quirks(tpacpi_bios_version_qtable,
1824 ARRAY_SIZE(tpacpi_bios_version_qtable)) != 0;
1825}
1826
b21a15f6
HMH		 1827/****************************************************************************
1828 ****************************************************************************
1829 *
1830 * Subdrivers
1831 *
1832 ****************************************************************************
1833 ****************************************************************************/
1834
1835/*************************************************************************
7a43f788 1836 * thinkpad-acpi metadata subdriver
b21a15f6
HMH		 1837 */
1838
887965e6 1839static int thinkpad_acpi_driver_read(struct seq_file *m)
1da177e4 1840{
887965e6
AD		 1841 seq_printf(m, "driver:\t\t%s\n", TPACPI_DESC);
1842 seq_printf(m, "version:\t%s\n", TPACPI_VERSION);
1843 return 0;
1da177e4
LT		 1844}
1845
a5763f22
HMH		 1846static struct ibm_struct thinkpad_acpi_driver_data = {
1847 .name = "driver",
1848 .read = thinkpad_acpi_driver_read,
1849};
1850
56b6aeb0
HMH		 1851/*************************************************************************
1852 * Hotkey subdriver
1853 */
1854
0d922e3b
HMH		 1855/*
1856 * ThinkPad firmware event model
1857 *
1858 * The ThinkPad firmware has two main event interfaces: normal ACPI
1859 * notifications (which follow the ACPI standard), and a private event
1860 * interface.
1861 *
1862 * The private event interface also issues events for the hotkeys. As
1863 * the driver gained features, the event handling code ended up being
1864 * built around the hotkey subdriver. This will need to be refactored
1865 * to a more formal event API eventually.
1866 *
1867 * Some "hotkeys" are actually supposed to be used as event reports,
1868 * such as "brightness has changed", "volume has changed", depending on
1869 * the ThinkPad model and how the firmware is operating.
1870 *
1871 * Unlike other classes, hotkey-class events have mask/unmask control on
1872 * non-ancient firmware. However, how it behaves changes a lot with the
1873 * firmware model and version.
1874 */
1875
f74a27d4
HMH		 1876enum { /* hot key scan codes (derived from ACPI DSDT) */
1877 TP_ACPI_HOTKEYSCAN_FNF1 = 0,
1878 TP_ACPI_HOTKEYSCAN_FNF2,
1879 TP_ACPI_HOTKEYSCAN_FNF3,
1880 TP_ACPI_HOTKEYSCAN_FNF4,
1881 TP_ACPI_HOTKEYSCAN_FNF5,
1882 TP_ACPI_HOTKEYSCAN_FNF6,
1883 TP_ACPI_HOTKEYSCAN_FNF7,
1884 TP_ACPI_HOTKEYSCAN_FNF8,
1885 TP_ACPI_HOTKEYSCAN_FNF9,
1886 TP_ACPI_HOTKEYSCAN_FNF10,
1887 TP_ACPI_HOTKEYSCAN_FNF11,
1888 TP_ACPI_HOTKEYSCAN_FNF12,
1889 TP_ACPI_HOTKEYSCAN_FNBACKSPACE,
1890 TP_ACPI_HOTKEYSCAN_FNINSERT,
1891 TP_ACPI_HOTKEYSCAN_FNDELETE,
1892 TP_ACPI_HOTKEYSCAN_FNHOME,
1893 TP_ACPI_HOTKEYSCAN_FNEND,
1894 TP_ACPI_HOTKEYSCAN_FNPAGEUP,
1895 TP_ACPI_HOTKEYSCAN_FNPAGEDOWN,
1896 TP_ACPI_HOTKEYSCAN_FNSPACE,
1897 TP_ACPI_HOTKEYSCAN_VOLUMEUP,
1898 TP_ACPI_HOTKEYSCAN_VOLUMEDOWN,
1899 TP_ACPI_HOTKEYSCAN_MUTE,
1900 TP_ACPI_HOTKEYSCAN_THINKPAD,
34a656d2
HMH		 1901 TP_ACPI_HOTKEYSCAN_UNK1,
1902 TP_ACPI_HOTKEYSCAN_UNK2,
1903 TP_ACPI_HOTKEYSCAN_UNK3,
1904 TP_ACPI_HOTKEYSCAN_UNK4,
1905 TP_ACPI_HOTKEYSCAN_UNK5,
1906 TP_ACPI_HOTKEYSCAN_UNK6,
1907 TP_ACPI_HOTKEYSCAN_UNK7,
1908 TP_ACPI_HOTKEYSCAN_UNK8,
1909
1910 /* Hotkey keymap size */
1911 TPACPI_HOTKEY_MAP_LEN
f74a27d4
HMH		 1912};
1913
0d922e3b 1914enum { /* Keys/events available through NVRAM polling */
01e88f25
HMH		 1915 TPACPI_HKEY_NVRAM_KNOWN_MASK = 0x00fb88c0U,
1916 TPACPI_HKEY_NVRAM_GOOD_MASK = 0x00fb8000U,
1917};
1918
1919enum { /* Positions of some of the keys in hotkey masks */
1920 TP_ACPI_HKEY_DISPSWTCH_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNF7,
1921 TP_ACPI_HKEY_DISPXPAND_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNF8,
1922 TP_ACPI_HKEY_HIBERNATE_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNF12,
1923 TP_ACPI_HKEY_BRGHTUP_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNHOME,
1924 TP_ACPI_HKEY_BRGHTDWN_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNEND,
1925 TP_ACPI_HKEY_THNKLGHT_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNPAGEUP,
1926 TP_ACPI_HKEY_ZOOM_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNSPACE,
1927 TP_ACPI_HKEY_VOLUP_MASK = 1 << TP_ACPI_HOTKEYSCAN_VOLUMEUP,
1928 TP_ACPI_HKEY_VOLDWN_MASK = 1 << TP_ACPI_HOTKEYSCAN_VOLUMEDOWN,
1929 TP_ACPI_HKEY_MUTE_MASK = 1 << TP_ACPI_HOTKEYSCAN_MUTE,
1930 TP_ACPI_HKEY_THINKPAD_MASK = 1 << TP_ACPI_HOTKEYSCAN_THINKPAD,
1931};
1932
1933enum { /* NVRAM to ACPI HKEY group map */
1934 TP_NVRAM_HKEY_GROUP_HK2 = TP_ACPI_HKEY_THINKPAD_MASK |
1935 TP_ACPI_HKEY_ZOOM_MASK |
1936 TP_ACPI_HKEY_DISPSWTCH_MASK |
1937 TP_ACPI_HKEY_HIBERNATE_MASK,
1938 TP_NVRAM_HKEY_GROUP_BRIGHTNESS = TP_ACPI_HKEY_BRGHTUP_MASK |
1939 TP_ACPI_HKEY_BRGHTDWN_MASK,
1940 TP_NVRAM_HKEY_GROUP_VOLUME = TP_ACPI_HKEY_VOLUP_MASK |
1941 TP_ACPI_HKEY_VOLDWN_MASK |
1942 TP_ACPI_HKEY_MUTE_MASK,
1943};
1944
1945#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
1946struct tp_nvram_state {
1947 u16 thinkpad_toggle:1;
1948 u16 zoom_toggle:1;
1949 u16 display_toggle:1;
1950 u16 thinklight_toggle:1;
1951 u16 hibernate_toggle:1;
1952 u16 displayexp_toggle:1;
1953 u16 display_state:1;
1954 u16 brightness_toggle:1;
1955 u16 volume_toggle:1;
1956 u16 mute:1;
1957
1958 u8 brightness_level;
1959 u8 volume_level;
1960};
1961
db25f16d 1962/* kthread for the hotkey poller */
01e88f25 1963static struct task_struct *tpacpi_hotkey_task;
db25f16d
HMH		 1964
1965/* Acquired while the poller kthread is running, use to sync start/stop */
01e88f25 1966static struct mutex hotkey_thread_mutex;
db25f16d
HMH		 1967
1968/*
0d922e3b
HMH		 1969 * Acquire mutex to write poller control variables as an
1970 * atomic block.
1971 *
1972 * Increment hotkey_config_change when changing them if you
1973 * want the kthread to forget old state.
db25f16d
HMH		 1974 *
1975 * See HOTKEY_CONFIG_CRITICAL_START/HOTKEY_CONFIG_CRITICAL_END
1976 */
01e88f25
HMH		 1977static struct mutex hotkey_thread_data_mutex;
1978static unsigned int hotkey_config_change;
1979
db25f16d
HMH		 1980/*
1981 * hotkey poller control variables
1982 *
1983 * Must be atomic or readers will also need to acquire mutex
0d922e3b
HMH		 1984 *
1985 * HOTKEY_CONFIG_CRITICAL_START/HOTKEY_CONFIG_CRITICAL_END
1986 * should be used only when the changes need to be taken as
1987 * a block, OR when one needs to force the kthread to forget
1988 * old state.
db25f16d
HMH		 1989 */
1990static u32 hotkey_source_mask; /* bit mask 0=ACPI,1=NVRAM */
1991static unsigned int hotkey_poll_freq = 10; /* Hz */
1992
1993#define HOTKEY_CONFIG_CRITICAL_START \
1994 do { \
1995 mutex_lock(&hotkey_thread_data_mutex); \
1996 hotkey_config_change++; \
1997 } while (0);
1998#define HOTKEY_CONFIG_CRITICAL_END \
1999 mutex_unlock(&hotkey_thread_data_mutex);
2000
01e88f25
HMH		 2001#else /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
2002
2003#define hotkey_source_mask 0U
db25f16d
HMH		 2004#define HOTKEY_CONFIG_CRITICAL_START
2005#define HOTKEY_CONFIG_CRITICAL_END
01e88f25
HMH		 2006
2007#endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
2008
f74a27d4
HMH		 2009static struct mutex hotkey_mutex;
2010
a713b4d7
HMH		 2011static enum { /* Reasons for waking up */
2012 TP_ACPI_WAKEUP_NONE = 0, /* None or unknown */
2013 TP_ACPI_WAKEUP_BAYEJ, /* Bay ejection request */
2014 TP_ACPI_WAKEUP_UNDOCK, /* Undock request */
2015} hotkey_wakeup_reason;
2016
2017static int hotkey_autosleep_ack;
2018
0d922e3b
HMH		 2019static u32 hotkey_orig_mask; /* events the BIOS had enabled */
2020static u32 hotkey_all_mask; /* all events supported in fw */
2021static u32 hotkey_reserved_mask; /* events better left disabled */
2022static u32 hotkey_driver_mask; /* events needed by the driver */
2023static u32 hotkey_user_mask; /* events visible to userspace */
2024static u32 hotkey_acpi_mask; /* events enabled in firmware */
6a38abbf 2025
b21a15f6
HMH		 2026static unsigned int hotkey_report_mode;
2027
edf0e0e5 2028static u16 *hotkey_keycode_map;
78f81cc4 2029
94954cc6 2030static struct attribute_set *hotkey_dev_attributes;
a0416420 2031
8b468c0c
HMH		 2032static void tpacpi_driver_event(const unsigned int hkey_event);
2033static void hotkey_driver_event(const unsigned int scancode);
7f0cf712 2034static void hotkey_poll_setup(const bool may_warn);
8b468c0c 2035
6c231bd5
HMH		 2036/* HKEY.MHKG() return bits */
2037#define TP_HOTKEY_TABLET_MASK (1 << 3)
2038
19d337df 2039static int hotkey_get_wlsw(void)
74941a69 2040{
19d337df
JB		 2041 int status;
2042
2043 if (!tp_features.hotkey_wlsw)
2044 return -ENODEV;
2045
a73f3091 2046#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
19d337df
JB		 2047 if (dbg_wlswemul)
2048 return (tpacpi_wlsw_emulstate) ?
2049 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF;
a73f3091 2050#endif
19d337df
JB		 2051
2052 if (!acpi_evalf(hkey_handle, &status, "WLSW", "d"))
74941a69 2053 return -EIO;
19d337df
JB		 2054
2055 return (status) ? TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF;
74941a69
HMH		 2056}
2057
6c231bd5
HMH		 2058static int hotkey_get_tablet_mode(int *status)
2059{
2060 int s;
2061
2062 if (!acpi_evalf(hkey_handle, &s, "MHKG", "d"))
2063 return -EIO;
2064
cee47f5a
HMH		 2065 *status = ((s & TP_HOTKEY_TABLET_MASK) != 0);
2066 return 0;
6c231bd5
HMH		 2067}
2068
b2c985e7 2069/*
0d922e3b
HMH		 2070 * Reads current event mask from firmware, and updates
2071 * hotkey_acpi_mask accordingly. Also resets any bits
2072 * from hotkey_user_mask that are unavailable to be
2073 * delivered (shadow requirement of the userspace ABI).
2074 *
b2c985e7
HMH		 2075 * Call with hotkey_mutex held
2076 */
2077static int hotkey_mask_get(void)
2078{
2079 if (tp_features.hotkey_mask) {
0d922e3b
HMH		 2080 u32 m = 0;
2081
01e88f25 2082 if (!acpi_evalf(hkey_handle, &m, "DHKN", "d"))
b2c985e7 2083 return -EIO;
0d922e3b
HMH		 2084
2085 hotkey_acpi_mask = m;
2086 } else {
2087 /* no mask support doesn't mean no event support... */
2088 hotkey_acpi_mask = hotkey_all_mask;
b2c985e7 2089 }
0d922e3b
HMH		 2090
2091 /* sync userspace-visible mask */
2092 hotkey_user_mask &= (hotkey_acpi_mask | hotkey_source_mask);
b2c985e7
HMH		 2093
2094 return 0;
2095}
2096
0d922e3b
HMH		 2097void static hotkey_mask_warn_incomplete_mask(void)
2098{
2099 /* log only what the user can fix... */
2100 const u32 wantedmask = hotkey_driver_mask &
2101 ~(hotkey_acpi_mask | hotkey_source_mask) &
2102 (hotkey_all_mask | TPACPI_HKEY_NVRAM_KNOWN_MASK);
2103
2104 if (wantedmask)
0978e012 2105 pr_notice("required events 0x%08x not enabled!\n", wantedmask);
0d922e3b
HMH		 2106}
2107
b2c985e7 2108/*
0d922e3b
HMH		 2109 * Set the firmware mask when supported
2110 *
2111 * Also calls hotkey_mask_get to update hotkey_acpi_mask.
2112 *
2113 * NOTE: does not set bits in hotkey_user_mask, but may reset them.
2114 *
b2c985e7
HMH		 2115 * Call with hotkey_mutex held
2116 */
2117static int hotkey_mask_set(u32 mask)
2118{
2119 int i;
2120 int rc = 0;
2121
0d922e3b 2122 const u32 fwmask = mask & ~hotkey_source_mask;
92889022 2123
0d922e3b 2124 if (tp_features.hotkey_mask) {
b2c985e7 2125 for (i = 0; i < 32; i++) {
b2c985e7
HMH		 2126 if (!acpi_evalf(hkey_handle,
2127 NULL, "MHKM", "vdd", i + 1,
0d922e3b 2128 !!(mask & (1 << i)))) {
b2c985e7
HMH		 2129 rc = -EIO;
2130 break;
b2c985e7
HMH		 2131 }
2132 }
0d922e3b 2133 }
b2c985e7 2134
0d922e3b
HMH		 2135 /*
2136 * We *must* make an inconditional call to hotkey_mask_get to
2137 * refresh hotkey_acpi_mask and update hotkey_user_mask
2138 *
2139 * Take the opportunity to also log when we cannot _enable_
2140 * a given event.
2141 */
2142 if (!hotkey_mask_get() && !rc && (fwmask & ~hotkey_acpi_mask)) {
0978e012
JP		 2143 pr_notice("asked for hotkey mask 0x%08x, but "
2144 "firmware forced it to 0x%08x\n",
2145 fwmask, hotkey_acpi_mask);
b2c985e7
HMH		 2146 }
2147
6b30eb7d
HMH		 2148 if (tpacpi_lifecycle != TPACPI_LIFE_EXITING)
2149 hotkey_mask_warn_incomplete_mask();
0d922e3b
HMH		 2150
2151 return rc;
2152}
2153
2154/*
2155 * Sets hotkey_user_mask and tries to set the firmware mask
2156 *
2157 * Call with hotkey_mutex held
2158 */
2159static int hotkey_user_mask_set(const u32 mask)
2160{
2161 int rc;
2162
2163 /* Give people a chance to notice they are doing something that
2164 * is bound to go boom on their users sooner or later */
2165 if (!tp_warned.hotkey_mask_ff &&
2166 (mask == 0xffff || mask == 0xffffff ||
2167 mask == 0xffffffff)) {
2168 tp_warned.hotkey_mask_ff = 1;
0978e012
JP		 2169 pr_notice("setting the hotkey mask to 0x%08x is likely "
2170 "not the best way to go about it\n", mask);
2171 pr_notice("please consider using the driver defaults, "
2172 "and refer to up-to-date thinkpad-acpi "
2173 "documentation\n");
0d922e3b
HMH		 2174 }
2175
2176 /* Try to enable what the user asked for, plus whatever we need.
2177 * this syncs everything but won't enable bits in hotkey_user_mask */
2178 rc = hotkey_mask_set((mask | hotkey_driver_mask) & ~hotkey_source_mask);
2179
2180 /* Enable the available bits in hotkey_user_mask */
2181 hotkey_user_mask = mask & (hotkey_acpi_mask | hotkey_source_mask);
2182
b2c985e7
HMH		 2183 return rc;
2184}
2185
8b468c0c
HMH		 2186/*
2187 * Sets the driver hotkey mask.
2188 *
2189 * Can be called even if the hotkey subdriver is inactive
2190 */
2191static int tpacpi_hotkey_driver_mask_set(const u32 mask)
2192{
2193 int rc;
2194
2195 /* Do the right thing if hotkey_init has not been called yet */
2196 if (!tp_features.hotkey) {
2197 hotkey_driver_mask = mask;
2198 return 0;
2199 }
2200
2201 mutex_lock(&hotkey_mutex);
2202
2203 HOTKEY_CONFIG_CRITICAL_START
2204 hotkey_driver_mask = mask;
b684a363 2205#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
8b468c0c 2206 hotkey_source_mask |= (mask & ~hotkey_all_mask);
b684a363 2207#endif
8b468c0c
HMH		 2208 HOTKEY_CONFIG_CRITICAL_END
2209
2210 rc = hotkey_mask_set((hotkey_acpi_mask | hotkey_driver_mask) &
2211 ~hotkey_source_mask);
7f0cf712
HMH		 2212 hotkey_poll_setup(true);
2213
8b468c0c
HMH		 2214 mutex_unlock(&hotkey_mutex);
2215
2216 return rc;
2217}
2218
b2c985e7
HMH		 2219static int hotkey_status_get(int *status)
2220{
2221 if (!acpi_evalf(hkey_handle, status, "DHKC", "d"))
2222 return -EIO;
2223
2224 return 0;
2225}
2226
2586d566 2227static int hotkey_status_set(bool enable)
b2c985e7 2228{
2586d566 2229 if (!acpi_evalf(hkey_handle, NULL, "MHKC", "vd", enable ? 1 : 0))
b2c985e7
HMH		 2230 return -EIO;
2231
2232 return 0;
2233}
2234
6c231bd5 2235static void tpacpi_input_send_tabletsw(void)
b3ec6f91 2236{
6c231bd5 2237 int state;
b3ec6f91 2238
6c231bd5
HMH		 2239 if (tp_features.hotkey_tablet &&
2240 !hotkey_get_tablet_mode(&state)) {
2241 mutex_lock(&tpacpi_inputdev_send_mutex);
b3ec6f91 2242
6c231bd5
HMH		 2243 input_report_switch(tpacpi_inputdev,
2244 SW_TABLET_MODE, !!state);
2245 input_sync(tpacpi_inputdev);
2246
2247 mutex_unlock(&tpacpi_inputdev_send_mutex);
2248 }
b3ec6f91
HMH		 2249}
2250
0d922e3b
HMH		 2251/* Do NOT call without validating scancode first */
2252static void tpacpi_input_send_key(const unsigned int scancode)
b7c8c200 2253{
0d922e3b 2254 const unsigned int keycode = hotkey_keycode_map[scancode];
b7c8c200
HMH		 2255
2256 if (keycode != KEY_RESERVED) {
2257 mutex_lock(&tpacpi_inputdev_send_mutex);
2258
5ffba7e6 2259 input_event(tpacpi_inputdev, EV_MSC, MSC_SCAN, scancode);
b7c8c200 2260 input_report_key(tpacpi_inputdev, keycode, 1);
b7c8c200
HMH		 2261 input_sync(tpacpi_inputdev);
2262
5ffba7e6 2263 input_event(tpacpi_inputdev, EV_MSC, MSC_SCAN, scancode);
b7c8c200 2264 input_report_key(tpacpi_inputdev, keycode, 0);
b7c8c200
HMH		 2265 input_sync(tpacpi_inputdev);
2266
2267 mutex_unlock(&tpacpi_inputdev_send_mutex);
2268 }
2269}
2270
0d922e3b
HMH		 2271/* Do NOT call without validating scancode first */
2272static void tpacpi_input_send_key_masked(const unsigned int scancode)
2273{
8b468c0c 2274 hotkey_driver_event(scancode);
0d922e3b
HMH		 2275 if (hotkey_user_mask & (1 << scancode))
2276 tpacpi_input_send_key(scancode);
2277}
2278
01e88f25
HMH		 2279#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
2280static struct tp_acpi_drv_struct ibm_hotkey_acpidriver;
2281
0d922e3b 2282/* Do NOT call without validating scancode first */
01e88f25
HMH		 2283static void tpacpi_hotkey_send_key(unsigned int scancode)
2284{
0d922e3b 2285 tpacpi_input_send_key_masked(scancode);
01e88f25
HMH		 2286 if (hotkey_report_mode < 2) {
2287 acpi_bus_generate_proc_event(ibm_hotkey_acpidriver.device,
67bcae6e 2288 0x80, TP_HKEY_EV_HOTKEY_BASE + scancode);
01e88f25
HMH		 2289 }
2290}
2291
0d922e3b 2292static void hotkey_read_nvram(struct tp_nvram_state *n, const u32 m)
01e88f25
HMH		 2293{
2294 u8 d;
2295
2296 if (m & TP_NVRAM_HKEY_GROUP_HK2) {
2297 d = nvram_read_byte(TP_NVRAM_ADDR_HK2);
2298 n->thinkpad_toggle = !!(d & TP_NVRAM_MASK_HKT_THINKPAD);
2299 n->zoom_toggle = !!(d & TP_NVRAM_MASK_HKT_ZOOM);
2300 n->display_toggle = !!(d & TP_NVRAM_MASK_HKT_DISPLAY);
2301 n->hibernate_toggle = !!(d & TP_NVRAM_MASK_HKT_HIBERNATE);
2302 }
2303 if (m & TP_ACPI_HKEY_THNKLGHT_MASK) {
2304 d = nvram_read_byte(TP_NVRAM_ADDR_THINKLIGHT);
2305 n->thinklight_toggle = !!(d & TP_NVRAM_MASK_THINKLIGHT);
2306 }
2307 if (m & TP_ACPI_HKEY_DISPXPAND_MASK) {
2308 d = nvram_read_byte(TP_NVRAM_ADDR_VIDEO);
2309 n->displayexp_toggle =
2310 !!(d & TP_NVRAM_MASK_HKT_DISPEXPND);
2311 }
2312 if (m & TP_NVRAM_HKEY_GROUP_BRIGHTNESS) {
2313 d = nvram_read_byte(TP_NVRAM_ADDR_BRIGHTNESS);
2314 n->brightness_level = (d & TP_NVRAM_MASK_LEVEL_BRIGHTNESS)
2315 >> TP_NVRAM_POS_LEVEL_BRIGHTNESS;
2316 n->brightness_toggle =
2317 !!(d & TP_NVRAM_MASK_HKT_BRIGHTNESS);
2318 }
2319 if (m & TP_NVRAM_HKEY_GROUP_VOLUME) {
2320 d = nvram_read_byte(TP_NVRAM_ADDR_MIXER);
2321 n->volume_level = (d & TP_NVRAM_MASK_LEVEL_VOLUME)
2322 >> TP_NVRAM_POS_LEVEL_VOLUME;
2323 n->mute = !!(d & TP_NVRAM_MASK_MUTE);
2324 n->volume_toggle = !!(d & TP_NVRAM_MASK_HKT_VOLUME);
2325 }
2326}
2327
0d922e3b
HMH		 2328static void hotkey_compare_and_issue_event(struct tp_nvram_state *oldn,
2329 struct tp_nvram_state *newn,
2330 const u32 event_mask)
2331{
2332
01e88f25 2333#define TPACPI_COMPARE_KEY(__scancode, __member) \
35ff8b9f 2334 do { \
0d922e3b 2335 if ((event_mask & (1 << __scancode)) && \
35ff8b9f 2336 oldn->__member != newn->__member) \
0d922e3b 2337 tpacpi_hotkey_send_key(__scancode); \
35ff8b9f 2338 } while (0)
01e88f25
HMH		 2339
2340#define TPACPI_MAY_SEND_KEY(__scancode) \
0d922e3b
HMH		 2341 do { \
2342 if (event_mask & (1 << __scancode)) \
2343 tpacpi_hotkey_send_key(__scancode); \
2344 } while (0)
01e88f25 2345
5d756db9
HMH		 2346 void issue_volchange(const unsigned int oldvol,
2347 const unsigned int newvol)
2348 {
2349 unsigned int i = oldvol;
2350
2351 while (i > newvol) {
2352 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEDOWN);
2353 i--;
2354 }
2355 while (i < newvol) {
2356 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEUP);
2357 i++;
2358 }
2359 }
2360
28999022
HMH		 2361 void issue_brightnesschange(const unsigned int oldbrt,
2362 const unsigned int newbrt)
2363 {
2364 unsigned int i = oldbrt;
2365
2366 while (i > newbrt) {
2367 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNEND);
2368 i--;
2369 }
2370 while (i < newbrt) {
2371 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNHOME);
2372 i++;
2373 }
2374 }
2375
01e88f25
HMH		 2376 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_THINKPAD, thinkpad_toggle);
2377 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNSPACE, zoom_toggle);
2378 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNF7, display_toggle);
2379 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNF12, hibernate_toggle);
2380
2381 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNPAGEUP, thinklight_toggle);
2382
2383 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNF8, displayexp_toggle);
2384
5d756db9
HMH		 2385 /*
2386 * Handle volume
2387 *
2388 * This code is supposed to duplicate the IBM firmware behaviour:
2389 * - Pressing MUTE issues mute hotkey message, even when already mute
2390 * - Pressing Volume up/down issues volume up/down hotkey messages,
c8440336 2391 * even when already at maximum or minimum volume
5d756db9
HMH		 2392 * - The act of unmuting issues volume up/down notification,
2393 * depending which key was used to unmute
2394 *
2395 * We are constrained to what the NVRAM can tell us, which is not much
2396 * and certainly not enough if more than one volume hotkey was pressed
2397 * since the last poll cycle.
2398 *
2399 * Just to make our life interesting, some newer Lenovo ThinkPads have
2400 * bugs in the BIOS and may fail to update volume_toggle properly.
2401 */
2402 if (newn->mute) {
2403 /* muted */
2404 if (!oldn->mute ||
2405 oldn->volume_toggle != newn->volume_toggle ||
2406 oldn->volume_level != newn->volume_level) {
2407 /* recently muted, or repeated mute keypress, or
2408 * multiple presses ending in mute */
2409 issue_volchange(oldn->volume_level, newn->volume_level);
01e88f25
HMH		 2410 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_MUTE);
2411 }
5d756db9
HMH		 2412 } else {
2413 /* unmute */
2414 if (oldn->mute) {
2415 /* recently unmuted, issue 'unmute' keypress */
01e88f25 2416 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEUP);
5d756db9
HMH		 2417 }
2418 if (oldn->volume_level != newn->volume_level) {
2419 issue_volchange(oldn->volume_level, newn->volume_level);
2420 } else if (oldn->volume_toggle != newn->volume_toggle) {
2421 /* repeated vol up/down keypress at end of scale ? */
2422 if (newn->volume_level == 0)
01e88f25 2423 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEDOWN);
5d756db9
HMH		 2424 else if (newn->volume_level >= TP_NVRAM_LEVEL_VOLUME_MAX)
2425 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEUP);
01e88f25
HMH		 2426 }
2427 }
2428
2429 /* handle brightness */
28999022
HMH		 2430 if (oldn->brightness_level != newn->brightness_level) {
2431 issue_brightnesschange(oldn->brightness_level,
2432 newn->brightness_level);
2433 } else if (oldn->brightness_toggle != newn->brightness_toggle) {
2434 /* repeated key presses that didn't change state */
2435 if (newn->brightness_level == 0)
01e88f25 2436 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNEND);
28999022
HMH		 2437 else if (newn->brightness_level >= bright_maxlvl
2438 && !tp_features.bright_unkfw)
2439 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNHOME);
01e88f25 2440 }
01e88f25
HMH		 2441
2442#undef TPACPI_COMPARE_KEY
2443#undef TPACPI_MAY_SEND_KEY
0d922e3b 2444}
01e88f25 2445
0d922e3b
HMH		 2446/*
2447 * Polling driver
2448 *
2449 * We track all events in hotkey_source_mask all the time, since
2450 * most of them are edge-based. We only issue those requested by
2451 * hotkey_user_mask or hotkey_driver_mask, though.
2452 */
01e88f25
HMH		 2453static int hotkey_kthread(void *data)
2454{
2455 struct tp_nvram_state s[2];
0d922e3b 2456 u32 poll_mask, event_mask;
01e88f25
HMH		 2457 unsigned int si, so;
2458 unsigned long t;
2459 unsigned int change_detector, must_reset;
db25f16d 2460 unsigned int poll_freq;
01e88f25
HMH		 2461
2462 mutex_lock(&hotkey_thread_mutex);
2463
2464 if (tpacpi_lifecycle == TPACPI_LIFE_EXITING)
2465 goto exit;
2466
2467 set_freezable();
2468
2469 so = 0;
2470 si = 1;
2471 t = 0;
2472
2473 /* Initial state for compares */
2474 mutex_lock(&hotkey_thread_data_mutex);
2475 change_detector = hotkey_config_change;
0d922e3b
HMH		 2476 poll_mask = hotkey_source_mask;
2477 event_mask = hotkey_source_mask &
2478 (hotkey_driver_mask | hotkey_user_mask);
db25f16d 2479 poll_freq = hotkey_poll_freq;
01e88f25 2480 mutex_unlock(&hotkey_thread_data_mutex);
0d922e3b 2481 hotkey_read_nvram(&s[so], poll_mask);
01e88f25 2482
db25f16d
HMH		 2483 while (!kthread_should_stop()) {
2484 if (t == 0) {
2485 if (likely(poll_freq))
2486 t = 1000/poll_freq;
2487 else
2488 t = 100; /* should never happen... */
2489 }
01e88f25
HMH		 2490 t = msleep_interruptible(t);
2491 if (unlikely(kthread_should_stop()))
2492 break;
2493 must_reset = try_to_freeze();
2494 if (t > 0 && !must_reset)
2495 continue;
2496
2497 mutex_lock(&hotkey_thread_data_mutex);
2498 if (must_reset || hotkey_config_change != change_detector) {
2499 /* forget old state on thaw or config change */
2500 si = so;
2501 t = 0;
2502 change_detector = hotkey_config_change;
2503 }
0d922e3b
HMH		 2504 poll_mask = hotkey_source_mask;
2505 event_mask = hotkey_source_mask &
2506 (hotkey_driver_mask | hotkey_user_mask);
db25f16d 2507 poll_freq = hotkey_poll_freq;
01e88f25
HMH		 2508 mutex_unlock(&hotkey_thread_data_mutex);
2509
0d922e3b
HMH		 2510 if (likely(poll_mask)) {
2511 hotkey_read_nvram(&s[si], poll_mask);
01e88f25
HMH		 2512 if (likely(si != so)) {
2513 hotkey_compare_and_issue_event(&s[so], &s[si],
0d922e3b 2514 event_mask);
01e88f25
HMH		 2515 }
2516 }
2517
2518 so = si;
2519 si ^= 1;
2520 }
2521
2522exit:
2523 mutex_unlock(&hotkey_thread_mutex);
2524 return 0;
2525}
2526
db25f16d 2527/* call with hotkey_mutex held */
01e88f25
HMH		 2528static void hotkey_poll_stop_sync(void)
2529{
2530 if (tpacpi_hotkey_task) {
2531 if (frozen(tpacpi_hotkey_task) ||
2532 freezing(tpacpi_hotkey_task))
2533 thaw_process(tpacpi_hotkey_task);
2534
2535 kthread_stop(tpacpi_hotkey_task);
2536 tpacpi_hotkey_task = NULL;
2537 mutex_lock(&hotkey_thread_mutex);
2538 /* at this point, the thread did exit */
2539 mutex_unlock(&hotkey_thread_mutex);
2540 }
2541}
2542
2543/* call with hotkey_mutex held */
7f0cf712 2544static void hotkey_poll_setup(const bool may_warn)
01e88f25 2545{
0d922e3b
HMH		 2546 const u32 poll_driver_mask = hotkey_driver_mask & hotkey_source_mask;
2547 const u32 poll_user_mask = hotkey_user_mask & hotkey_source_mask;
db25f16d 2548
0d922e3b
HMH		 2549 if (hotkey_poll_freq > 0 &&
2550 (poll_driver_mask ||
2551 (poll_user_mask && tpacpi_inputdev->users > 0))) {
01e88f25
HMH		 2552 if (!tpacpi_hotkey_task) {
2553 tpacpi_hotkey_task = kthread_run(hotkey_kthread,
95e57ab2 2554 NULL, TPACPI_NVRAM_KTHREAD_NAME);
01e88f25
HMH		 2555 if (IS_ERR(tpacpi_hotkey_task)) {
2556 tpacpi_hotkey_task = NULL;
0978e012 2557 pr_err("could not create kernel thread "
01e88f25
HMH		 2558 "for hotkey polling\n");
2559 }
2560 }
2561 } else {
2562 hotkey_poll_stop_sync();
0d922e3b 2563 if (may_warn && (poll_driver_mask || poll_user_mask) &&
db25f16d 2564 hotkey_poll_freq == 0) {
0978e012
JP		 2565 pr_notice("hot keys 0x%08x and/or events 0x%08x "
2566 "require polling, which is currently "
2567 "disabled\n",
2568 poll_user_mask, poll_driver_mask);
01e88f25
HMH		 2569 }
2570 }
2571}
2572
7f0cf712 2573static void hotkey_poll_setup_safe(const bool may_warn)
01e88f25
HMH		 2574{
2575 mutex_lock(&hotkey_mutex);
2576 hotkey_poll_setup(may_warn);
2577 mutex_unlock(&hotkey_mutex);
2578}
2579
db25f16d
HMH		 2580/* call with hotkey_mutex held */
2581static void hotkey_poll_set_freq(unsigned int freq)
2582{
2583 if (!freq)
2584 hotkey_poll_stop_sync();
2585
db25f16d 2586 hotkey_poll_freq = freq;
db25f16d
HMH		 2587}
2588
1bc6b9cd
HMH		 2589#else /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
2590
7f0cf712
HMH		 2591static void hotkey_poll_setup(const bool __unused)
2592{
2593}
2594
2595static void hotkey_poll_setup_safe(const bool __unused)
1bc6b9cd
HMH		 2596{
2597}
2598
2599#endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
2600
01e88f25
HMH		 2601static int hotkey_inputdev_open(struct input_dev *dev)
2602{
2603 switch (tpacpi_lifecycle) {
2604 case TPACPI_LIFE_INIT:
01e88f25 2605 case TPACPI_LIFE_RUNNING:
db25f16d 2606 hotkey_poll_setup_safe(false);
01e88f25 2607 return 0;
b589ea4c
HMH		 2608 case TPACPI_LIFE_EXITING:
2609 return -EBUSY;
01e88f25
HMH		 2610 }
2611
2612 /* Should only happen if tpacpi_lifecycle is corrupt */
2613 BUG();
2614 return -EBUSY;
2615}
2616
2617static void hotkey_inputdev_close(struct input_dev *dev)
2618{
2619 /* disable hotkey polling when possible */
b589ea4c 2620 if (tpacpi_lifecycle != TPACPI_LIFE_EXITING &&
0d922e3b 2621 !(hotkey_source_mask & hotkey_driver_mask))
db25f16d 2622 hotkey_poll_setup_safe(false);
01e88f25 2623}
01e88f25 2624
a0416420
HMH		 2625/* sysfs hotkey enable ------------------------------------------------- */
2626static ssize_t hotkey_enable_show(struct device *dev,
2627 struct device_attribute *attr,
2628 char *buf)
2629{
ae92bd17 2630 int res, status;
a0416420 2631
2586d566
HMH		 2632 printk_deprecated_attribute("hotkey_enable",
2633 "Hotkey reporting is always enabled");
2634
b2c985e7 2635 res = hotkey_status_get(&status);
a0416420
HMH		 2636 if (res)
2637 return res;
2638
2639 return snprintf(buf, PAGE_SIZE, "%d\n", status);
2640}
2641
2642static ssize_t hotkey_enable_store(struct device *dev,
2643 struct device_attribute *attr,
2644 const char *buf, size_t count)
2645{
2646 unsigned long t;
2586d566
HMH		 2647
2648 printk_deprecated_attribute("hotkey_enable",
2649 "Hotkeys can be disabled through hotkey_mask");
a0416420
HMH		 2650
2651 if (parse_strtoul(buf, 1, &t))
2652 return -EINVAL;
2653
2586d566
HMH		 2654 if (t == 0)
2655 return -EPERM;
a0416420 2656
2586d566 2657 return count;
a0416420
HMH		 2658}
2659
2660static struct device_attribute dev_attr_hotkey_enable =
cc4c24e1 2661 __ATTR(hotkey_enable, S_IWUSR | S_IRUGO,
a0416420
HMH		 2662 hotkey_enable_show, hotkey_enable_store);
2663
2664/* sysfs hotkey mask --------------------------------------------------- */
2665static ssize_t hotkey_mask_show(struct device *dev,
2666 struct device_attribute *attr,
2667 char *buf)
2668{
0d922e3b 2669 return snprintf(buf, PAGE_SIZE, "0x%08x\n", hotkey_user_mask);
a0416420
HMH		 2670}
2671
2672static ssize_t hotkey_mask_store(struct device *dev,
2673 struct device_attribute *attr,
2674 const char *buf, size_t count)
2675{
2676 unsigned long t;
b2c985e7 2677 int res;
a0416420 2678
ae92bd17 2679 if (parse_strtoul(buf, 0xffffffffUL, &t))
a0416420
HMH		 2680 return -EINVAL;
2681
7646ea88 2682 if (mutex_lock_killable(&hotkey_mutex))
b2c985e7
HMH		 2683 return -ERESTARTSYS;
2684
0d922e3b 2685 res = hotkey_user_mask_set(t);
01e88f25
HMH		 2686
2687#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
db25f16d 2688 hotkey_poll_setup(true);
01e88f25
HMH		 2689#endif
2690
b2c985e7 2691 mutex_unlock(&hotkey_mutex);
a0416420 2692
56e2c200
HMH		 2693 tpacpi_disclose_usertask("hotkey_mask", "set to 0x%08lx\n", t);
2694
a0416420
HMH		 2695 return (res) ? res : count;
2696}
2697
2698static struct device_attribute dev_attr_hotkey_mask =
cc4c24e1 2699 __ATTR(hotkey_mask, S_IWUSR | S_IRUGO,
a0416420
HMH		 2700 hotkey_mask_show, hotkey_mask_store);
2701
2702/* sysfs hotkey bios_enabled ------------------------------------------- */
2703static ssize_t hotkey_bios_enabled_show(struct device *dev,
2704 struct device_attribute *attr,
2705 char *buf)
2706{
2586d566 2707 return sprintf(buf, "0\n");
a0416420
HMH		 2708}
2709
2710static struct device_attribute dev_attr_hotkey_bios_enabled =
cc4c24e1 2711 __ATTR(hotkey_bios_enabled, S_IRUGO, hotkey_bios_enabled_show, NULL);
a0416420
HMH		 2712
2713/* sysfs hotkey bios_mask ---------------------------------------------- */
2714static ssize_t hotkey_bios_mask_show(struct device *dev,
2715 struct device_attribute *attr,
2716 char *buf)
2717{
06777be6
HMH		 2718 printk_deprecated_attribute("hotkey_bios_mask",
2719 "This attribute is useless.");
ae92bd17 2720 return snprintf(buf, PAGE_SIZE, "0x%08x\n", hotkey_orig_mask);
a0416420
HMH		 2721}
2722
2723static struct device_attribute dev_attr_hotkey_bios_mask =
cc4c24e1 2724 __ATTR(hotkey_bios_mask, S_IRUGO, hotkey_bios_mask_show, NULL);
a0416420 2725
9b010de5
HMH		 2726/* sysfs hotkey all_mask ----------------------------------------------- */
2727static ssize_t hotkey_all_mask_show(struct device *dev,
2728 struct device_attribute *attr,
2729 char *buf)
2730{
01e88f25
HMH		 2731 return snprintf(buf, PAGE_SIZE, "0x%08x\n",
2732 hotkey_all_mask | hotkey_source_mask);
9b010de5
HMH		 2733}
2734
2735static struct device_attribute dev_attr_hotkey_all_mask =
2736 __ATTR(hotkey_all_mask, S_IRUGO, hotkey_all_mask_show, NULL);
2737
2738/* sysfs hotkey recommended_mask --------------------------------------- */
2739static ssize_t hotkey_recommended_mask_show(struct device *dev,
2740 struct device_attribute *attr,
2741 char *buf)
2742{
2743 return snprintf(buf, PAGE_SIZE, "0x%08x\n",
01e88f25
HMH		 2744 (hotkey_all_mask | hotkey_source_mask)
2745 & ~hotkey_reserved_mask);
9b010de5
HMH		 2746}
2747
2748static struct device_attribute dev_attr_hotkey_recommended_mask =
2749 __ATTR(hotkey_recommended_mask, S_IRUGO,
2750 hotkey_recommended_mask_show, NULL);
2751
01e88f25
HMH		 2752#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
2753
2754/* sysfs hotkey hotkey_source_mask ------------------------------------- */
2755static ssize_t hotkey_source_mask_show(struct device *dev,
2756 struct device_attribute *attr,
2757 char *buf)
2758{
2759 return snprintf(buf, PAGE_SIZE, "0x%08x\n", hotkey_source_mask);
2760}
2761
2762static ssize_t hotkey_source_mask_store(struct device *dev,
2763 struct device_attribute *attr,
2764 const char *buf, size_t count)
2765{
2766 unsigned long t;
0d922e3b
HMH		 2767 u32 r_ev;
2768 int rc;
01e88f25
HMH		 2769
2770 if (parse_strtoul(buf, 0xffffffffUL, &t) ||
2771 ((t & ~TPACPI_HKEY_NVRAM_KNOWN_MASK) != 0))
2772 return -EINVAL;
2773
7646ea88 2774 if (mutex_lock_killable(&hotkey_mutex))
01e88f25
HMH		 2775 return -ERESTARTSYS;
2776
2777 HOTKEY_CONFIG_CRITICAL_START
2778 hotkey_source_mask = t;
2779 HOTKEY_CONFIG_CRITICAL_END
2780
0d922e3b
HMH		 2781 rc = hotkey_mask_set((hotkey_user_mask | hotkey_driver_mask) &
2782 ~hotkey_source_mask);
db25f16d 2783 hotkey_poll_setup(true);
0d922e3b
HMH		 2784
2785 /* check if events needed by the driver got disabled */
2786 r_ev = hotkey_driver_mask & ~(hotkey_acpi_mask & hotkey_all_mask)
2787 & ~hotkey_source_mask & TPACPI_HKEY_NVRAM_KNOWN_MASK;
01e88f25
HMH		 2788
2789 mutex_unlock(&hotkey_mutex);
2790
0d922e3b 2791 if (rc < 0)
0978e012
JP		 2792 pr_err("hotkey_source_mask: "
2793 "failed to update the firmware event mask!\n");
0d922e3b
HMH		 2794
2795 if (r_ev)
0978e012
JP		 2796 pr_notice("hotkey_source_mask: "
2797 "some important events were disabled: 0x%04x\n",
2798 r_ev);
0d922e3b 2799
56e2c200
HMH		 2800 tpacpi_disclose_usertask("hotkey_source_mask", "set to 0x%08lx\n", t);
2801
0d922e3b 2802 return (rc < 0) ? rc : count;
01e88f25
HMH		 2803}
2804
2805static struct device_attribute dev_attr_hotkey_source_mask =
2806 __ATTR(hotkey_source_mask, S_IWUSR | S_IRUGO,
2807 hotkey_source_mask_show, hotkey_source_mask_store);
2808
2809/* sysfs hotkey hotkey_poll_freq --------------------------------------- */
2810static ssize_t hotkey_poll_freq_show(struct device *dev,
2811 struct device_attribute *attr,
2812 char *buf)
2813{
2814 return snprintf(buf, PAGE_SIZE, "%d\n", hotkey_poll_freq);
2815}
2816
2817static ssize_t hotkey_poll_freq_store(struct device *dev,
2818 struct device_attribute *attr,
2819 const char *buf, size_t count)
2820{
2821 unsigned long t;
2822
2823 if (parse_strtoul(buf, 25, &t))
2824 return -EINVAL;
2825
7646ea88 2826 if (mutex_lock_killable(&hotkey_mutex))
01e88f25
HMH		 2827 return -ERESTARTSYS;
2828
db25f16d
HMH		 2829 hotkey_poll_set_freq(t);
2830 hotkey_poll_setup(true);
01e88f25 2831
01e88f25
HMH		 2832 mutex_unlock(&hotkey_mutex);
2833
56e2c200
HMH		 2834 tpacpi_disclose_usertask("hotkey_poll_freq", "set to %lu\n", t);
2835
01e88f25
HMH		 2836 return count;
2837}
2838
2839static struct device_attribute dev_attr_hotkey_poll_freq =
2840 __ATTR(hotkey_poll_freq, S_IWUSR | S_IRUGO,
2841 hotkey_poll_freq_show, hotkey_poll_freq_store);
2842
2843#endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
2844
50ebec09 2845/* sysfs hotkey radio_sw (pollable) ------------------------------------ */
74941a69
HMH		 2846static ssize_t hotkey_radio_sw_show(struct device *dev,
2847 struct device_attribute *attr,
2848 char *buf)
2849{
19d337df
JB		 2850 int res;
2851 res = hotkey_get_wlsw();
74941a69
HMH		 2852 if (res < 0)
2853 return res;
2854
19d337df
JB		 2855 /* Opportunistic update */
2856 tpacpi_rfk_update_hwblock_state((res == TPACPI_RFK_RADIO_OFF));
2857
2858 return snprintf(buf, PAGE_SIZE, "%d\n",
2859 (res == TPACPI_RFK_RADIO_OFF) ? 0 : 1);
74941a69
HMH		 2860}
2861
2862static struct device_attribute dev_attr_hotkey_radio_sw =
2863 __ATTR(hotkey_radio_sw, S_IRUGO, hotkey_radio_sw_show, NULL);
2864
50ebec09
HMH		 2865static void hotkey_radio_sw_notify_change(void)
2866{
2867 if (tp_features.hotkey_wlsw)
2868 sysfs_notify(&tpacpi_pdev->dev.kobj, NULL,
2869 "hotkey_radio_sw");
2870}
2871
6c231bd5
HMH		 2872/* sysfs hotkey tablet mode (pollable) --------------------------------- */
2873static ssize_t hotkey_tablet_mode_show(struct device *dev,
2874 struct device_attribute *attr,
2875 char *buf)
2876{
2877 int res, s;
2878 res = hotkey_get_tablet_mode(&s);
2879 if (res < 0)
2880 return res;
2881
2882 return snprintf(buf, PAGE_SIZE, "%d\n", !!s);
2883}
2884
2885static struct device_attribute dev_attr_hotkey_tablet_mode =
2886 __ATTR(hotkey_tablet_mode, S_IRUGO, hotkey_tablet_mode_show, NULL);
2887
2888static void hotkey_tablet_mode_notify_change(void)
2889{
2890 if (tp_features.hotkey_tablet)
2891 sysfs_notify(&tpacpi_pdev->dev.kobj, NULL,
2892 "hotkey_tablet_mode");
2893}
2894
ff80f137
HMH		 2895/* sysfs hotkey report_mode -------------------------------------------- */
2896static ssize_t hotkey_report_mode_show(struct device *dev,
2897 struct device_attribute *attr,
2898 char *buf)
2899{
2900 return snprintf(buf, PAGE_SIZE, "%d\n",
2901 (hotkey_report_mode != 0) ? hotkey_report_mode : 1);
2902}
2903
2904static struct device_attribute dev_attr_hotkey_report_mode =
2905 __ATTR(hotkey_report_mode, S_IRUGO, hotkey_report_mode_show, NULL);
2906
50ebec09 2907/* sysfs wakeup reason (pollable) -------------------------------------- */
a713b4d7
HMH		 2908static ssize_t hotkey_wakeup_reason_show(struct device *dev,
2909 struct device_attribute *attr,
2910 char *buf)
2911{
2912 return snprintf(buf, PAGE_SIZE, "%d\n", hotkey_wakeup_reason);
2913}
2914
2915static struct device_attribute dev_attr_hotkey_wakeup_reason =
2916 __ATTR(wakeup_reason, S_IRUGO, hotkey_wakeup_reason_show, NULL);
2917
1d5a2b54 2918static void hotkey_wakeup_reason_notify_change(void)
50ebec09 2919{
0d922e3b
HMH		 2920 sysfs_notify(&tpacpi_pdev->dev.kobj, NULL,
2921 "wakeup_reason");
50ebec09
HMH		 2922}
2923
2924/* sysfs wakeup hotunplug_complete (pollable) -------------------------- */
a713b4d7
HMH		 2925static ssize_t hotkey_wakeup_hotunplug_complete_show(struct device *dev,
2926 struct device_attribute *attr,
2927 char *buf)
2928{
2929 return snprintf(buf, PAGE_SIZE, "%d\n", hotkey_autosleep_ack);
2930}
2931
2932static struct device_attribute dev_attr_hotkey_wakeup_hotunplug_complete =
2933 __ATTR(wakeup_hotunplug_complete, S_IRUGO,
2934 hotkey_wakeup_hotunplug_complete_show, NULL);
2935
1d5a2b54 2936static void hotkey_wakeup_hotunplug_complete_notify_change(void)
50ebec09 2937{
0d922e3b
HMH		 2938 sysfs_notify(&tpacpi_pdev->dev.kobj, NULL,
2939 "wakeup_hotunplug_complete");
50ebec09
HMH		 2940}
2941
a0416420
HMH		 2942/* --------------------------------------------------------------------- */
2943
ff80f137
HMH		 2944static struct attribute *hotkey_attributes[] __initdata = {
2945 &dev_attr_hotkey_enable.attr,
01e88f25 2946 &dev_attr_hotkey_bios_enabled.attr,
0d922e3b 2947 &dev_attr_hotkey_bios_mask.attr,
ff80f137 2948 &dev_attr_hotkey_report_mode.attr,
0d922e3b
HMH		 2949 &dev_attr_hotkey_wakeup_reason.attr,
2950 &dev_attr_hotkey_wakeup_hotunplug_complete.attr,
01e88f25
HMH		 2951 &dev_attr_hotkey_mask.attr,
2952 &dev_attr_hotkey_all_mask.attr,
2953 &dev_attr_hotkey_recommended_mask.attr,
0d922e3b 2954#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
01e88f25
HMH		 2955 &dev_attr_hotkey_source_mask.attr,
2956 &dev_attr_hotkey_poll_freq.attr,
2957#endif
ff80f137
HMH		 2958};
2959
19d337df
JB		 2960/*
2961 * Sync both the hw and sw blocking state of all switches
2962 */
733e27c1
HMH		 2963static void tpacpi_send_radiosw_update(void)
2964{
2965 int wlsw;
2966
19d337df
JB		 2967 /*
2968 * We must sync all rfkill controllers *before* issuing any
2969 * rfkill input events, or we will race the rfkill core input
2970 * handler.
2971 *
c8440336 2972 * tpacpi_inputdev_send_mutex works as a synchronization point
19d337df
JB		 2973 * for the above.
2974 *
2975 * We optimize to avoid numerous calls to hotkey_get_wlsw.
2976 */
2977
2978 wlsw = hotkey_get_wlsw();
2979
2980 /* Sync hw blocking state first if it is hw-blocked */
2981 if (wlsw == TPACPI_RFK_RADIO_OFF)
2982 tpacpi_rfk_update_hwblock_state(true);
0e74dc26 2983
19d337df
JB		 2984 /* Sync sw blocking state */
2985 tpacpi_rfk_update_swstate_all();
2986
2987 /* Sync hw blocking state last if it is hw-unblocked */
2988 if (wlsw == TPACPI_RFK_RADIO_ON)
2989 tpacpi_rfk_update_hwblock_state(false);
2990
2991 /* Issue rfkill input event for WLSW switch */
2992 if (!(wlsw < 0)) {
733e27c1
HMH		 2993 mutex_lock(&tpacpi_inputdev_send_mutex);
2994
2995 input_report_switch(tpacpi_inputdev,
19d337df 2996 SW_RFKILL_ALL, (wlsw > 0));
733e27c1
HMH		 2997 input_sync(tpacpi_inputdev);
2998
2999 mutex_unlock(&tpacpi_inputdev_send_mutex);
3000 }
19d337df
JB		 3001
3002 /*
3003 * this can be unconditional, as we will poll state again
3004 * if userspace uses the notify to read data
3005 */
733e27c1
HMH		 3006 hotkey_radio_sw_notify_change();
3007}
3008
9c0a76e1
HMH		 3009static void hotkey_exit(void)
3010{
3011#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
db25f16d 3012 mutex_lock(&hotkey_mutex);
9c0a76e1 3013 hotkey_poll_stop_sync();
db25f16d 3014 mutex_unlock(&hotkey_mutex);
9c0a76e1
HMH		 3015#endif
3016
3017 if (hotkey_dev_attributes)
3018 delete_attr_set(hotkey_dev_attributes, &tpacpi_pdev->dev.kobj);
3019
3020 kfree(hotkey_keycode_map);
3021
4be73005 3022 dbg_printk(TPACPI_DBG_EXIT | TPACPI_DBG_HKEY,
0d922e3b
HMH		 3023 "restoring original HKEY status and mask\n");
3024 /* yes, there is a bitwise or below, we want the
3025 * functions to be called even if one of them fail */
3026 if (((tp_features.hotkey_mask &&
3027 hotkey_mask_set(hotkey_orig_mask)) |
3028 hotkey_status_set(false)) != 0)
0978e012 3029 pr_err("failed to restore hot key mask "
4be73005 3030 "to BIOS defaults\n");
9c0a76e1
HMH		 3031}
3032
de4c8cc7
HMH		 3033static void __init hotkey_unmap(const unsigned int scancode)
3034{
3035 if (hotkey_keycode_map[scancode] != KEY_RESERVED) {
3036 clear_bit(hotkey_keycode_map[scancode],
3037 tpacpi_inputdev->keybit);
3038 hotkey_keycode_map[scancode] = KEY_RESERVED;
3039 }
3040}
3041
0d922e3b
HMH		 3042/*
3043 * HKEY quirks:
3044 * TPACPI_HK_Q_INIMASK: Supports FN+F3,FN+F4,FN+F12
3045 */
3046
3047#define TPACPI_HK_Q_INIMASK 0x0001
3048
3049static const struct tpacpi_quirk tpacpi_hotkey_qtable[] __initconst = {
3050 TPACPI_Q_IBM('I', 'H', TPACPI_HK_Q_INIMASK), /* 600E */
3051 TPACPI_Q_IBM('I', 'N', TPACPI_HK_Q_INIMASK), /* 600E */
3052 TPACPI_Q_IBM('I', 'D', TPACPI_HK_Q_INIMASK), /* 770, 770E, 770ED */
3053 TPACPI_Q_IBM('I', 'W', TPACPI_HK_Q_INIMASK), /* A20m */
3054 TPACPI_Q_IBM('I', 'V', TPACPI_HK_Q_INIMASK), /* A20p */
3055 TPACPI_Q_IBM('1', '0', TPACPI_HK_Q_INIMASK), /* A21e, A22e */
3056 TPACPI_Q_IBM('K', 'U', TPACPI_HK_Q_INIMASK), /* A21e */
3057 TPACPI_Q_IBM('K', 'X', TPACPI_HK_Q_INIMASK), /* A21m, A22m */
3058 TPACPI_Q_IBM('K', 'Y', TPACPI_HK_Q_INIMASK), /* A21p, A22p */
3059 TPACPI_Q_IBM('1', 'B', TPACPI_HK_Q_INIMASK), /* A22e */
3060 TPACPI_Q_IBM('1', '3', TPACPI_HK_Q_INIMASK), /* A22m */
3061 TPACPI_Q_IBM('1', 'E', TPACPI_HK_Q_INIMASK), /* A30/p (0) */
3062 TPACPI_Q_IBM('1', 'C', TPACPI_HK_Q_INIMASK), /* R30 */
3063 TPACPI_Q_IBM('1', 'F', TPACPI_HK_Q_INIMASK), /* R31 */
3064 TPACPI_Q_IBM('I', 'Y', TPACPI_HK_Q_INIMASK), /* T20 */
3065 TPACPI_Q_IBM('K', 'Z', TPACPI_HK_Q_INIMASK), /* T21 */
3066 TPACPI_Q_IBM('1', '6', TPACPI_HK_Q_INIMASK), /* T22 */
3067 TPACPI_Q_IBM('I', 'Z', TPACPI_HK_Q_INIMASK), /* X20, X21 */
3068 TPACPI_Q_IBM('1', 'D', TPACPI_HK_Q_INIMASK), /* X22, X23, X24 */
3069};
3070
fc6e7568
HMH		 3071typedef u16 tpacpi_keymap_entry_t;
3072typedef tpacpi_keymap_entry_t tpacpi_keymap_t[TPACPI_HOTKEY_MAP_LEN];
d1e14dca 3073
a5763f22 3074static int __init hotkey_init(struct ibm_init_struct *iibm)
56b6aeb0 3075{
0f089147
HMH		 3076 /* Requirements for changing the default keymaps:
3077 *
3078 * 1. Many of the keys are mapped to KEY_RESERVED for very
3079 * good reasons. Do not change them unless you have deep
3080 * knowledge on the IBM and Lenovo ThinkPad firmware for
3081 * the various ThinkPad models. The driver behaves
3082 * differently for KEY_RESERVED: such keys have their
3083 * hot key mask *unset* in mask_recommended, and also
3084 * in the initial hot key mask programmed into the
3085 * firmware at driver load time, which means the firm-
3086 * ware may react very differently if you change them to
3087 * something else;
3088 *
3089 * 2. You must be subscribed to the linux-thinkpad and
3090 * ibm-acpi-devel mailing lists, and you should read the
3091 * list archives since 2007 if you want to change the
3092 * keymaps. This requirement exists so that you will
3093 * know the past history of problems with the thinkpad-
3094 * acpi driver keymaps, and also that you will be
3095 * listening to any bug reports;
3096 *
3097 * 3. Do not send thinkpad-acpi specific patches directly to
3098 * for merging, *ever*. Send them to the linux-acpi
3099 * mailinglist for comments. Merging is to be done only
3100 * through acpi-test and the ACPI maintainer.
3101 *
3102 * If the above is too much to ask, don't change the keymap.
3103 * Ask the thinkpad-acpi maintainer to do it, instead.
3104 */
d1e14dca
HMH		 3105
3106 enum keymap_index {
3107 TPACPI_KEYMAP_IBM_GENERIC = 0,
3108 TPACPI_KEYMAP_LENOVO_GENERIC,
3109 };
3110
3111 static const tpacpi_keymap_t tpacpi_keymaps[] __initconst = {
3112 /* Generic keymap for IBM ThinkPads */
3113 [TPACPI_KEYMAP_IBM_GENERIC] = {
edf0e0e5 3114 /* Scan Codes 0x00 to 0x0B: ACPI HKEY FN+F1..F12 */
d1e14dca 3115 KEY_FN_F1, KEY_BATTERY, KEY_COFFEE, KEY_SLEEP,
edf0e0e5
HMH		 3116 KEY_WLAN, KEY_FN_F6, KEY_SWITCHVIDEOMODE, KEY_FN_F8,
3117 KEY_FN_F9, KEY_FN_F10, KEY_FN_F11, KEY_SUSPEND,
0f089147
HMH		 3118
3119 /* Scan codes 0x0C to 0x1F: Other ACPI HKEY hot keys */
edf0e0e5
HMH		 3120 KEY_UNKNOWN, /* 0x0C: FN+BACKSPACE */
3121 KEY_UNKNOWN, /* 0x0D: FN+INSERT */
3122 KEY_UNKNOWN, /* 0x0E: FN+DELETE */
0f089147 3123
0d922e3b 3124 /* brightness: firmware always reacts to them */
e927c08d 3125 KEY_RESERVED, /* 0x0F: FN+HOME (brightness up) */
e927c08d 3126 KEY_RESERVED, /* 0x10: FN+END (brightness down) */
0f089147
HMH		 3127
3128 /* Thinklight: firmware always react to it */
edf0e0e5 3129 KEY_RESERVED, /* 0x11: FN+PGUP (thinklight toggle) */
0f089147 3130
edf0e0e5
HMH		 3131 KEY_UNKNOWN, /* 0x12: FN+PGDOWN */
3132 KEY_ZOOM, /* 0x13: FN+SPACE (zoom) */
0f089147
HMH		 3133
3134 /* Volume: firmware always react to it and reprograms
3135 * the built-in *extra* mixer. Never map it to control
3136 * another mixer by default. */
e927c08d
HMH		 3137 KEY_RESERVED, /* 0x14: VOLUME UP */
3138 KEY_RESERVED, /* 0x15: VOLUME DOWN */
3139 KEY_RESERVED, /* 0x16: MUTE */
0f089147 3140
edf0e0e5 3141 KEY_VENDOR, /* 0x17: Thinkpad/AccessIBM/Lenovo */
0f089147 3142
edf0e0e5
HMH		 3143 /* (assignments unknown, please report if found) */
3144 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN,
3145 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN,
d1e14dca
HMH		 3146 },
3147
3148 /* Generic keymap for Lenovo ThinkPads */
3149 [TPACPI_KEYMAP_LENOVO_GENERIC] = {
edf0e0e5
HMH		 3150 /* Scan Codes 0x00 to 0x0B: ACPI HKEY FN+F1..F12 */
3151 KEY_FN_F1, KEY_COFFEE, KEY_BATTERY, KEY_SLEEP,
2b754262 3152 KEY_WLAN, KEY_CAMERA, KEY_SWITCHVIDEOMODE, KEY_FN_F8,
edf0e0e5 3153 KEY_FN_F9, KEY_FN_F10, KEY_FN_F11, KEY_SUSPEND,
0f089147
HMH		 3154
3155 /* Scan codes 0x0C to 0x1F: Other ACPI HKEY hot keys */
edf0e0e5
HMH		 3156 KEY_UNKNOWN, /* 0x0C: FN+BACKSPACE */
3157 KEY_UNKNOWN, /* 0x0D: FN+INSERT */
3158 KEY_UNKNOWN, /* 0x0E: FN+DELETE */
0f089147 3159
de4c8cc7
HMH		 3160 /* These should be enabled --only-- when ACPI video
3161 * is disabled (i.e. in "vendor" mode), and are handled
3162 * in a special way by the init code */
3163 KEY_BRIGHTNESSUP, /* 0x0F: FN+HOME (brightness up) */
3164 KEY_BRIGHTNESSDOWN, /* 0x10: FN+END (brightness down) */
0f089147 3165
edf0e0e5 3166 KEY_RESERVED, /* 0x11: FN+PGUP (thinklight toggle) */
0f089147 3167
edf0e0e5
HMH		 3168 KEY_UNKNOWN, /* 0x12: FN+PGDOWN */
3169 KEY_ZOOM, /* 0x13: FN+SPACE (zoom) */
0f089147
HMH		 3170
3171 /* Volume: z60/z61, T60 (BIOS version?): firmware always
3172 * react to it and reprograms the built-in *extra* mixer.
3173 * Never map it to control another mixer by default.
3174 *
3175 * T60?, T61, R60?, R61: firmware and EC tries to send
3176 * these over the regular keyboard, so these are no-ops,
3177 * but there are still weird bugs re. MUTE, so do not
3178 * change unless you get test reports from all Lenovo
3179 * models. May cause the BIOS to interfere with the
3180 * HDA mixer.
3181 */
e927c08d
HMH		 3182 KEY_RESERVED, /* 0x14: VOLUME UP */
3183 KEY_RESERVED, /* 0x15: VOLUME DOWN */
3184 KEY_RESERVED, /* 0x16: MUTE */
0f089147 3185
edf0e0e5 3186 KEY_VENDOR, /* 0x17: Thinkpad/AccessIBM/Lenovo */
0f089147 3187
33009557
AL		 3188 /* (assignments unknown, please report if found) */
3189 KEY_UNKNOWN, KEY_UNKNOWN,
3190
3191 /*
3192 * The mic mute button only sends 0x1a. It does not
3193 * automatically mute the mic or change the mute light.
3194 */
3195 KEY_MICMUTE, /* 0x1a: Mic mute (since ?400 or so) */
3196
edf0e0e5
HMH		 3197 /* (assignments unknown, please report if found) */
3198 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN,
33009557 3199 KEY_UNKNOWN,
d1e14dca 3200 },
edf0e0e5
HMH		 3201 };
3202
d1e14dca
HMH		 3203 static const struct tpacpi_quirk tpacpi_keymap_qtable[] __initconst = {
3204 /* Generic maps (fallback) */
3205 {
3206 .vendor = PCI_VENDOR_ID_IBM,
3207 .bios = TPACPI_MATCH_ANY, .ec = TPACPI_MATCH_ANY,
3208 .quirks = TPACPI_KEYMAP_IBM_GENERIC,
3209 },
3210 {
3211 .vendor = PCI_VENDOR_ID_LENOVO,
3212 .bios = TPACPI_MATCH_ANY, .ec = TPACPI_MATCH_ANY,
3213 .quirks = TPACPI_KEYMAP_LENOVO_GENERIC,
3214 },
3215 };
3216
3217#define TPACPI_HOTKEY_MAP_SIZE sizeof(tpacpi_keymap_t)
fc6e7568 3218#define TPACPI_HOTKEY_MAP_TYPESIZE sizeof(tpacpi_keymap_entry_t)
edf0e0e5 3219
6a38abbf 3220 int res, i;
74941a69 3221 int status;
1b6521dc 3222 int hkeyv;
d89a727a
HMH		 3223 bool radiosw_state = false;
3224 bool tabletsw_state = false;
b86c4722 3225
0d922e3b 3226 unsigned long quirks;
d1e14dca 3227 unsigned long keymap_id;
0d922e3b 3228
56e2c200
HMH		 3229 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY,
3230 "initializing hotkey subdriver\n");
fe08bc4b 3231
6a38abbf 3232 BUG_ON(!tpacpi_inputdev);
01e88f25
HMH		 3233 BUG_ON(tpacpi_inputdev->open != NULL ||
3234 tpacpi_inputdev->close != NULL);
6a38abbf 3235
e0c7dfe7 3236 TPACPI_ACPIHANDLE_INIT(hkey);
40ca9fdf 3237 mutex_init(&hotkey_mutex);
5fba344c 3238
01e88f25
HMH		 3239#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
3240 mutex_init(&hotkey_thread_mutex);
3241 mutex_init(&hotkey_thread_data_mutex);
3242#endif
3243
56b6aeb0 3244 /* hotkey not supported on 570 */
d8fd94d9 3245 tp_features.hotkey = hkey_handle != NULL;
56b6aeb0 3246
56e2c200
HMH		 3247 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY,
3248 "hotkeys are %s\n",
d8fd94d9 3249 str_supported(tp_features.hotkey));
fe08bc4b 3250
9c0a76e1
HMH		 3251 if (!tp_features.hotkey)
3252 return 1;
a0416420 3253
0d922e3b
HMH		 3254 quirks = tpacpi_check_quirks(tpacpi_hotkey_qtable,
3255 ARRAY_SIZE(tpacpi_hotkey_qtable));
3256
d64c81c4
HMH		 3257 tpacpi_disable_brightness_delay();
3258
0d922e3b
HMH		 3259 /* MUST have enough space for all attributes to be added to
3260 * hotkey_dev_attributes */
3261 hotkey_dev_attributes = create_attr_set(
3262 ARRAY_SIZE(hotkey_attributes) + 2,
3263 NULL);
9c0a76e1
HMH		 3264 if (!hotkey_dev_attributes)
3265 return -ENOMEM;
3266 res = add_many_to_attr_set(hotkey_dev_attributes,
3267 hotkey_attributes,
3268 ARRAY_SIZE(hotkey_attributes));
3269 if (res)
3270 goto err_exit;
3271
0d922e3b 3272 /* mask not supported on 600e/x, 770e, 770x, A21e, A2xm/p,
9c0a76e1
HMH		 3273 A30, R30, R31, T20-22, X20-21, X22-24. Detected by checking
3274 for HKEY interface version 0x100 */
3275 if (acpi_evalf(hkey_handle, &hkeyv, "MHKV", "qd")) {
3276 if ((hkeyv >> 8) != 1) {
0978e012
JP		 3277 pr_err("unknown version of the HKEY interface: 0x%x\n",
3278 hkeyv);
3279 pr_err("please report this to %s\n", TPACPI_MAIL);
9c0a76e1
HMH		 3280 } else {
3281 /*
3282 * MHKV 0x100 in A31, R40, R40e,
3283 * T4x, X31, and later
3284 */
56e2c200
HMH		 3285 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY,
3286 "firmware HKEY interface version: 0x%x\n",
3287 hkeyv);
0d922e3b
HMH		 3288
3289 /* Paranoia check AND init hotkey_all_mask */
3290 if (!acpi_evalf(hkey_handle, &hotkey_all_mask,
3291 "MHKA", "qd")) {
0978e012 3292 pr_err("missing MHKA handler, "
0d922e3b
HMH		 3293 "please report this to %s\n",
3294 TPACPI_MAIL);
3295 /* Fallback: pre-init for FN+F3,F4,F12 */
3296 hotkey_all_mask = 0x080cU;
3297 } else {
3298 tp_features.hotkey_mask = 1;
3299 }
1b6521dc 3300 }
9c0a76e1 3301 }
56b6aeb0 3302
56e2c200
HMH		 3303 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY,
3304 "hotkey masks are %s\n",
9c0a76e1 3305 str_supported(tp_features.hotkey_mask));
fe08bc4b 3306
0d922e3b
HMH		 3307 /* Init hotkey_all_mask if not initialized yet */
3308 if (!tp_features.hotkey_mask && !hotkey_all_mask &&
3309 (quirks & TPACPI_HK_Q_INIMASK))
3310 hotkey_all_mask = 0x080cU; /* FN+F12, FN+F4, FN+F3 */
9b010de5 3311
0d922e3b 3312 /* Init hotkey_acpi_mask and hotkey_orig_mask */
9c0a76e1 3313 if (tp_features.hotkey_mask) {
0d922e3b
HMH		 3314 /* hotkey_source_mask *must* be zero for
3315 * the first hotkey_mask_get to return hotkey_orig_mask */
9c0a76e1
HMH		 3316 res = hotkey_mask_get();
3317 if (res)
3318 goto err_exit;
3319
0d922e3b
HMH		 3320 hotkey_orig_mask = hotkey_acpi_mask;
3321 } else {
3322 hotkey_orig_mask = hotkey_all_mask;
3323 hotkey_acpi_mask = hotkey_all_mask;
9c0a76e1 3324 }
74941a69 3325
a73f3091
HMH		 3326#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
3327 if (dbg_wlswemul) {
3328 tp_features.hotkey_wlsw = 1;
d89a727a 3329 radiosw_state = !!tpacpi_wlsw_emulstate;
0978e012 3330 pr_info("radio switch emulation enabled\n");
a73f3091
HMH		 3331 } else
3332#endif
9c0a76e1
HMH		 3333 /* Not all thinkpads have a hardware radio switch */
3334 if (acpi_evalf(hkey_handle, &status, "WLSW", "qd")) {
3335 tp_features.hotkey_wlsw = 1;
d89a727a 3336 radiosw_state = !!status;
0978e012 3337 pr_info("radio switch found; radios are %s\n",
9c0a76e1 3338 enabled(status, 0));
3a872080
HMH		 3339 }
3340 if (tp_features.hotkey_wlsw)
9c0a76e1
HMH		 3341 res = add_to_attr_set(hotkey_dev_attributes,
3342 &dev_attr_hotkey_radio_sw.attr);
74941a69 3343
9c0a76e1
HMH		 3344 /* For X41t, X60t, X61t Tablets... */
3345 if (!res && acpi_evalf(hkey_handle, &status, "MHKG", "qd")) {
3346 tp_features.hotkey_tablet = 1;
d89a727a 3347 tabletsw_state = !!(status & TP_HOTKEY_TABLET_MASK);
0978e012 3348 pr_info("possible tablet mode switch found; "
9c0a76e1 3349 "ThinkPad in %s mode\n",
d89a727a 3350 (tabletsw_state) ? "tablet" : "laptop");
9c0a76e1
HMH		 3351 res = add_to_attr_set(hotkey_dev_attributes,
3352 &dev_attr_hotkey_tablet_mode.attr);
3353 }
6c231bd5 3354
9c0a76e1
HMH		 3355 if (!res)
3356 res = register_attr_set_with_sysfs(
3357 hotkey_dev_attributes,
3358 &tpacpi_pdev->dev.kobj);
3359 if (res)
3360 goto err_exit;
6a38abbf 3361
9c0a76e1 3362 /* Set up key map */
9c0a76e1
HMH		 3363 hotkey_keycode_map = kmalloc(TPACPI_HOTKEY_MAP_SIZE,
3364 GFP_KERNEL);
3365 if (!hotkey_keycode_map) {
0978e012 3366 pr_err("failed to allocate memory for key map\n");
9c0a76e1
HMH		 3367 res = -ENOMEM;
3368 goto err_exit;
3369 }
edf0e0e5 3370
d1e14dca
HMH		 3371 keymap_id = tpacpi_check_quirks(tpacpi_keymap_qtable,
3372 ARRAY_SIZE(tpacpi_keymap_qtable));
3373 BUG_ON(keymap_id >= ARRAY_SIZE(tpacpi_keymaps));
3374 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY,
3375 "using keymap number %lu\n", keymap_id);
3376
3377 memcpy(hotkey_keycode_map, &tpacpi_keymaps[keymap_id],
3378 TPACPI_HOTKEY_MAP_SIZE);
edf0e0e5 3379
792979c8 3380 input_set_capability(tpacpi_inputdev, EV_MSC, MSC_SCAN);
9c0a76e1
HMH		 3381 tpacpi_inputdev->keycodesize = TPACPI_HOTKEY_MAP_TYPESIZE;
3382 tpacpi_inputdev->keycodemax = TPACPI_HOTKEY_MAP_LEN;
3383 tpacpi_inputdev->keycode = hotkey_keycode_map;
3384 for (i = 0; i < TPACPI_HOTKEY_MAP_LEN; i++) {
3385 if (hotkey_keycode_map[i] != KEY_RESERVED) {
792979c8
HMH		 3386 input_set_capability(tpacpi_inputdev, EV_KEY,
3387 hotkey_keycode_map[i]);
9c0a76e1
HMH		 3388 } else {
3389 if (i < sizeof(hotkey_reserved_mask)*8)
3390 hotkey_reserved_mask |= 1 << i;
6a38abbf 3391 }
9c0a76e1 3392 }
6a38abbf 3393
9c0a76e1 3394 if (tp_features.hotkey_wlsw) {
792979c8 3395 input_set_capability(tpacpi_inputdev, EV_SW, SW_RFKILL_ALL);
d89a727a
HMH		 3396 input_report_switch(tpacpi_inputdev,
3397 SW_RFKILL_ALL, radiosw_state);
9c0a76e1
HMH		 3398 }
3399 if (tp_features.hotkey_tablet) {
792979c8 3400 input_set_capability(tpacpi_inputdev, EV_SW, SW_TABLET_MODE);
d89a727a
HMH		 3401 input_report_switch(tpacpi_inputdev,
3402 SW_TABLET_MODE, tabletsw_state);
9c0a76e1 3403 }
5c29d58f 3404
9c0a76e1 3405 /* Do not issue duplicate brightness change events to
77775838
HMH		 3406 * userspace. tpacpi_detect_brightness_capabilities() must have
3407 * been called before this point */
8bf3d4c5 3408 if (tp_features.bright_acpimode && acpi_video_backlight_support()) {
0978e012
JP		 3409 pr_info("This ThinkPad has standard ACPI backlight "
3410 "brightness control, supported by the ACPI "
3411 "video driver\n");
3412 pr_notice("Disabling thinkpad-acpi brightness events "
3413 "by default...\n");
9c0a76e1 3414
de4c8cc7
HMH		 3415 /* Disable brightness up/down on Lenovo thinkpads when
3416 * ACPI is handling them, otherwise it is plain impossible
3417 * for userspace to do something even remotely sane */
9c0a76e1
HMH		 3418 hotkey_reserved_mask |=
3419 (1 << TP_ACPI_HOTKEYSCAN_FNHOME)
3420 | (1 << TP_ACPI_HOTKEYSCAN_FNEND);
de4c8cc7
HMH		 3421 hotkey_unmap(TP_ACPI_HOTKEYSCAN_FNHOME);
3422 hotkey_unmap(TP_ACPI_HOTKEYSCAN_FNEND);
9c0a76e1 3423 }
ff80f137 3424
230d8cf2 3425#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
0d922e3b
HMH		 3426 hotkey_source_mask = TPACPI_HKEY_NVRAM_GOOD_MASK
3427 & ~hotkey_all_mask
3428 & ~hotkey_reserved_mask;
230d8cf2
HMH		 3429
3430 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY,
3431 "hotkey source mask 0x%08x, polling freq %u\n",
3432 hotkey_source_mask, hotkey_poll_freq);
3433#endif
3434
56e2c200
HMH		 3435 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY,
3436 "enabling firmware HKEY event interface...\n");
2586d566 3437 res = hotkey_status_set(true);
9c0a76e1
HMH		 3438 if (res) {
3439 hotkey_exit();
3440 return res;
3441 }
0d922e3b
HMH		 3442 res = hotkey_mask_set(((hotkey_all_mask & ~hotkey_reserved_mask)
3443 | hotkey_driver_mask)
3444 & ~hotkey_source_mask);
9c0a76e1
HMH		 3445 if (res < 0 && res != -ENXIO) {
3446 hotkey_exit();
3447 return res;
3448 }
0d922e3b
HMH		 3449 hotkey_user_mask = (hotkey_acpi_mask | hotkey_source_mask)
3450 & ~hotkey_reserved_mask;
3451 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY,
3452 "initial masks: user=0x%08x, fw=0x%08x, poll=0x%08x\n",
3453 hotkey_user_mask, hotkey_acpi_mask, hotkey_source_mask);
01e88f25 3454
56e2c200
HMH		 3455 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY,
3456 "legacy ibm/hotkey event reporting over procfs %s\n",
9c0a76e1
HMH		 3457 (hotkey_report_mode < 2) ?
3458 "enabled" : "disabled");
01e88f25 3459
9c0a76e1
HMH		 3460 tpacpi_inputdev->open = &hotkey_inputdev_open;
3461 tpacpi_inputdev->close = &hotkey_inputdev_close;
56b6aeb0 3462
db25f16d 3463 hotkey_poll_setup_safe(true);
56b6aeb0 3464
9c0a76e1 3465 return 0;
01e88f25 3466
9c0a76e1
HMH		 3467err_exit:
3468 delete_attr_set(hotkey_dev_attributes, &tpacpi_pdev->dev.kobj);
3469 hotkey_dev_attributes = NULL;
a0416420 3470
9c0a76e1 3471 return (res < 0)? res : 1;
56b6aeb0
HMH		 3472}
3473
3827e7a3
HMH		 3474static bool hotkey_notify_hotkey(const u32 hkey,
3475 bool *send_acpi_ev,
3476 bool *ignore_acpi_ev)
3477{
3478 /* 0x1000-0x1FFF: key presses */
3479 unsigned int scancode = hkey & 0xfff;
3480 *send_acpi_ev = true;
3481 *ignore_acpi_ev = false;
3482
34a656d2
HMH		 3483 /* HKEY event 0x1001 is scancode 0x00 */
3484 if (scancode > 0 && scancode <= TPACPI_HOTKEY_MAP_LEN) {
3827e7a3
HMH		 3485 scancode--;
3486 if (!(hotkey_source_mask & (1 << scancode))) {
0d922e3b 3487 tpacpi_input_send_key_masked(scancode);
3827e7a3
HMH		 3488 *send_acpi_ev = false;
3489 } else {
3490 *ignore_acpi_ev = true;
3491 }
3492 return true;
3493 }
3494 return false;
3495}
3496
3497static bool hotkey_notify_wakeup(const u32 hkey,
3498 bool *send_acpi_ev,
3499 bool *ignore_acpi_ev)
3500{
3501 /* 0x2000-0x2FFF: Wakeup reason */
3502 *send_acpi_ev = true;
3503 *ignore_acpi_ev = false;
3504
3505 switch (hkey) {
67bcae6e
HMH		 3506 case TP_HKEY_EV_WKUP_S3_UNDOCK: /* suspend, undock */
3507 case TP_HKEY_EV_WKUP_S4_UNDOCK: /* hibernation, undock */
3827e7a3
HMH		 3508 hotkey_wakeup_reason = TP_ACPI_WAKEUP_UNDOCK;
3509 *ignore_acpi_ev = true;
3510 break;
3511
67bcae6e
HMH		 3512 case TP_HKEY_EV_WKUP_S3_BAYEJ: /* suspend, bay eject */
3513 case TP_HKEY_EV_WKUP_S4_BAYEJ: /* hibernation, bay eject */
3827e7a3
HMH		 3514 hotkey_wakeup_reason = TP_ACPI_WAKEUP_BAYEJ;
3515 *ignore_acpi_ev = true;
3516 break;
3517
67bcae6e
HMH		 3518 case TP_HKEY_EV_WKUP_S3_BATLOW: /* Battery on critical low level/S3 */
3519 case TP_HKEY_EV_WKUP_S4_BATLOW: /* Battery on critical low level/S4 */
0978e012 3520 pr_alert("EMERGENCY WAKEUP: battery almost empty\n");
106b4e66
HMH		 3521 /* how to auto-heal: */
3522 /* 2313: woke up from S3, go to S4/S5 */
3523 /* 2413: woke up from S4, go to S5 */
3524 break;
3525
3827e7a3
HMH		 3526 default:
3527 return false;
3528 }
3529
3530 if (hotkey_wakeup_reason != TP_ACPI_WAKEUP_NONE) {
0978e012 3531 pr_info("woke up due to a hot-unplug request...\n");
3827e7a3
HMH		 3532 hotkey_wakeup_reason_notify_change();
3533 }
3534 return true;
3535}
3536
a50245af
HMH		 3537static bool hotkey_notify_dockevent(const u32 hkey,
3538 bool *send_acpi_ev,
3539 bool *ignore_acpi_ev)
3540{
3541 /* 0x4000-0x4FFF: dock-related events */
3542 *send_acpi_ev = true;
3543 *ignore_acpi_ev = false;
3544
3545 switch (hkey) {
3546 case TP_HKEY_EV_UNDOCK_ACK:
3547 /* ACPI undock operation completed after wakeup */
3548 hotkey_autosleep_ack = 1;
3549 pr_info("undocked\n");
3550 hotkey_wakeup_hotunplug_complete_notify_change();
3551 return true;
3552
3553 case TP_HKEY_EV_HOTPLUG_DOCK: /* docked to port replicator */
3554 pr_info("docked into hotplug port replicator\n");
3555 return true;
3556 case TP_HKEY_EV_HOTPLUG_UNDOCK: /* undocked from port replicator */
3557 pr_info("undocked from hotplug port replicator\n");
3558 return true;
3559
3560 default:
3561 return false;
3562 }
3563}
3564
3827e7a3
HMH		 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
2d43f671 3599static bool hotkey_notify_6xxx(const u32 hkey,
106b4e66
HMH		 3600 bool *send_acpi_ev,
3601 bool *ignore_acpi_ev)
3602{
9ebd9e83
HMH		 3603 bool known = true;
3604
2d43f671 3605 /* 0x6000-0x6FFF: thermal alarms/notices and keyboard events */
106b4e66
HMH		 3606 *send_acpi_ev = true;
3607 *ignore_acpi_ev = false;
3608
3609 switch (hkey) {
9ebd9e83 3610 case TP_HKEY_EV_THM_TABLE_CHANGED:
0978e012 3611 pr_info("EC reports that Thermal Table has changed\n");
9ebd9e83
HMH		 3612 /* recommended action: do nothing, we don't have
3613 * Lenovo ATM information */
3614 return true;
67bcae6e 3615 case TP_HKEY_EV_ALARM_BAT_HOT:
0978e012 3616 pr_crit("THERMAL ALARM: battery is too hot!\n");
106b4e66 3617 /* recommended action: warn user through gui */
9ebd9e83 3618 break;
67bcae6e 3619 case TP_HKEY_EV_ALARM_BAT_XHOT:
0978e012 3620 pr_alert("THERMAL EMERGENCY: battery is extremely hot!\n");
106b4e66 3621 /* recommended action: immediate sleep/hibernate */
9ebd9e83 3622 break;
67bcae6e 3623 case TP_HKEY_EV_ALARM_SENSOR_HOT:
0978e012 3624 pr_crit("THERMAL ALARM: "
106b4e66
HMH		 3625 "a sensor reports something is too hot!\n");
3626 /* recommended action: warn user through gui, that */
3627 /* some internal component is too hot */
9ebd9e83 3628 break;
67bcae6e 3629 case TP_HKEY_EV_ALARM_SENSOR_XHOT:
0978e012
JP		 3630 pr_alert("THERMAL EMERGENCY: "
3631 "a sensor reports something is extremely hot!\n");
106b4e66 3632 /* recommended action: immediate sleep/hibernate */
9ebd9e83 3633 break;
2d43f671
HMH		 3634
3635 case TP_HKEY_EV_KEY_NUMLOCK:
3636 case TP_HKEY_EV_KEY_FN:
3637 /* key press events, we just ignore them as long as the EC
3638 * is still reporting them in the normal keyboard stream */
3639 *send_acpi_ev = false;
3640 *ignore_acpi_ev = true;
3641 return true;
3642
106b4e66 3643 default:
2d43f671 3644 pr_warn("unknown possible thermal alarm or keyboard event received\n");
9ebd9e83 3645 known = false;
106b4e66 3646 }
9ebd9e83
HMH		 3647
3648 thermal_dump_all_sensors();
3649
3650 return known;
106b4e66
HMH		 3651}
3652
56b6aeb0
HMH		 3653static void hotkey_notify(struct ibm_struct *ibm, u32 event)
3654{
6a38abbf 3655 u32 hkey;
3827e7a3
HMH		 3656 bool send_acpi_ev;
3657 bool ignore_acpi_ev;
3658 bool known_ev;
3eea123d
HMH		 3659
3660 if (event != 0x80) {
0978e012 3661 pr_err("unknown HKEY notification event %d\n", event);
3eea123d 3662 /* forward it to userspace, maybe it knows how to handle it */
35ff8b9f
HMH		 3663 acpi_bus_generate_netlink_event(
3664 ibm->acpi->device->pnp.device_class,
e0b36fc5 3665 dev_name(&ibm->acpi->device->dev),
35ff8b9f 3666 event, 0);
3eea123d
HMH		 3667 return;
3668 }
3669
3670 while (1) {
3671 if (!acpi_evalf(hkey_handle, &hkey, "MHKP", "d")) {
0978e012 3672 pr_err("failed to retrieve HKEY event\n");
3eea123d
HMH		 3673 return;
3674 }
3675
3676 if (hkey == 0) {
3677 /* queue empty */
3678 return;
3679 }
3680
3827e7a3
HMH		 3681 send_acpi_ev = true;
3682 ignore_acpi_ev = false;
56b6aeb0 3683
ff80f137
HMH		 3684 switch (hkey >> 12) {
3685 case 1:
3686 /* 0x1000-0x1FFF: key presses */
3827e7a3
HMH		 3687 known_ev = hotkey_notify_hotkey(hkey, &send_acpi_ev,
3688 &ignore_acpi_ev);
ff80f137 3689 break;
a713b4d7 3690 case 2:
3827e7a3
HMH		 3691 /* 0x2000-0x2FFF: Wakeup reason */
3692 known_ev = hotkey_notify_wakeup(hkey, &send_acpi_ev,
3693 &ignore_acpi_ev);
a713b4d7
HMH		 3694 break;
3695 case 3:
3827e7a3 3696 /* 0x3000-0x3FFF: bay-related wakeups */
bf8b29c8
HMH		 3697 switch (hkey) {
3698 case TP_HKEY_EV_BAYEJ_ACK:
a713b4d7 3699 hotkey_autosleep_ack = 1;
0978e012 3700 pr_info("bay ejected\n");
50ebec09 3701 hotkey_wakeup_hotunplug_complete_notify_change();
3827e7a3 3702 known_ev = true;
bf8b29c8
HMH		 3703 break;
3704 case TP_HKEY_EV_OPTDRV_EJ:
3705 /* FIXME: kick libata if SATA link offline */
3706 known_ev = true;
3707 break;
3708 default:
3827e7a3 3709 known_ev = false;
a713b4d7
HMH		 3710 }
3711 break;
3712 case 4:
a50245af
HMH		 3713 /* 0x4000-0x4FFF: dock-related events */
3714 known_ev = hotkey_notify_dockevent(hkey, &send_acpi_ev,
3715 &ignore_acpi_ev);
a713b4d7 3716 break;
ff80f137 3717 case 5:
d1edb2b5 3718 /* 0x5000-0x5FFF: human interface helpers */
3827e7a3
HMH		 3719 known_ev = hotkey_notify_usrevent(hkey, &send_acpi_ev,
3720 &ignore_acpi_ev);
ff80f137 3721 break;
106b4e66 3722 case 6:
2d43f671
HMH		 3723 /* 0x6000-0x6FFF: thermal alarms/notices and
3724 * keyboard events */
3725 known_ev = hotkey_notify_6xxx(hkey, &send_acpi_ev,
106b4e66
HMH		 3726 &ignore_acpi_ev);
3727 break;
ff80f137
HMH		 3728 case 7:
3729 /* 0x7000-0x7FFF: misc */
67bcae6e
HMH		 3730 if (tp_features.hotkey_wlsw &&
3731 hkey == TP_HKEY_EV_RFKILL_CHANGED) {
733e27c1 3732 tpacpi_send_radiosw_update();
3b64b51d 3733 send_acpi_ev = 0;
3827e7a3 3734 known_ev = true;
6a38abbf 3735 break;
6a38abbf 3736 }
ff80f137
HMH		 3737 /* fallthrough to default */
3738 default:
3827e7a3 3739 known_ev = false;
3b64b51d 3740 }
3827e7a3 3741 if (!known_ev) {
0978e012
JP		 3742 pr_notice("unhandled HKEY event 0x%04x\n", hkey);
3743 pr_notice("please report the conditions when this "
3744 "event happened to %s\n", TPACPI_MAIL);
6a38abbf 3745 }
ff80f137 3746
3eea123d 3747 /* Legacy events */
35ff8b9f
HMH		 3748 if (!ignore_acpi_ev &&
3749 (send_acpi_ev || hotkey_report_mode < 2)) {
3750 acpi_bus_generate_proc_event(ibm->acpi->device,
3751 event, hkey);
3e5ce914 3752 }
ff80f137 3753
3eea123d 3754 /* netlink events */
3e5ce914 3755 if (!ignore_acpi_ev && send_acpi_ev) {
35ff8b9f
HMH		 3756 acpi_bus_generate_netlink_event(
3757 ibm->acpi->device->pnp.device_class,
e0b36fc5 3758 dev_name(&ibm->acpi->device->dev),
35ff8b9f 3759 event, hkey);
3eea123d 3760 }
56b6aeb0
HMH		 3761 }
3762}
3763
a713b4d7
HMH		 3764static void hotkey_suspend(pm_message_t state)
3765{
3766 /* Do these on suspend, we get the events on early resume! */
3767 hotkey_wakeup_reason = TP_ACPI_WAKEUP_NONE;
3768 hotkey_autosleep_ack = 0;
3769}
3770
5c29d58f
HMH		 3771static void hotkey_resume(void)
3772{
d64c81c4
HMH		 3773 tpacpi_disable_brightness_delay();
3774
0d922e3b
HMH		 3775 if (hotkey_status_set(true) < 0 ||
3776 hotkey_mask_set(hotkey_acpi_mask) < 0)
0978e012 3777 pr_err("error while attempting to reset the event "
0d922e3b
HMH		 3778 "firmware interface\n");
3779
733e27c1 3780 tpacpi_send_radiosw_update();
6c231bd5 3781 hotkey_tablet_mode_notify_change();
50ebec09
HMH		 3782 hotkey_wakeup_reason_notify_change();
3783 hotkey_wakeup_hotunplug_complete_notify_change();
db25f16d 3784 hotkey_poll_setup_safe(false);
5c29d58f
HMH		 3785}
3786
a0416420 3787/* procfs -------------------------------------------------------------- */
887965e6 3788static int hotkey_read(struct seq_file *m)
1da177e4 3789{
ae92bd17 3790 int res, status;
1da177e4 3791
d8fd94d9 3792 if (!tp_features.hotkey) {
887965e6
AD		 3793 seq_printf(m, "status:\t\tnot supported\n");
3794 return 0;
78f81cc4
BD		 3795 }
3796
7646ea88 3797 if (mutex_lock_killable(&hotkey_mutex))
fc589a3c 3798 return -ERESTARTSYS;
b2c985e7
HMH		 3799 res = hotkey_status_get(&status);
3800 if (!res)
3801 res = hotkey_mask_get();
40ca9fdf 3802 mutex_unlock(&hotkey_mutex);
b86c4722
HMH		 3803 if (res)
3804 return res;
1da177e4 3805
887965e6 3806 seq_printf(m, "status:\t\t%s\n", enabled(status, 0));
0d922e3b 3807 if (hotkey_all_mask) {
887965e6
AD		 3808 seq_printf(m, "mask:\t\t0x%08x\n", hotkey_user_mask);
3809 seq_printf(m, "commands:\tenable, disable, reset, <mask>\n");
1da177e4 3810 } else {
887965e6
AD		 3811 seq_printf(m, "mask:\t\tnot supported\n");
3812 seq_printf(m, "commands:\tenable, disable, reset\n");
1da177e4
LT		 3813 }
3814
887965e6 3815 return 0;
1da177e4
LT		 3816}
3817
406e988b 3818static void hotkey_enabledisable_warn(bool enable)
2586d566
HMH		 3819{
3820 tpacpi_log_usertask("procfs hotkey enable/disable");
406e988b 3821 if (!WARN((tpacpi_lifecycle == TPACPI_LIFE_RUNNING || !enable),
0978e012
JP		 3822 pr_fmt("hotkey enable/disable functionality has been "
3823 "removed from the driver. "
3824 "Hotkeys are always enabled.\n")))
3825 pr_err("Please remove the hotkey=enable module "
3826 "parameter, it is deprecated. "
3827 "Hotkeys are always enabled.\n");
2586d566
HMH		 3828}
3829
78f81cc4 3830static int hotkey_write(char *buf)
1da177e4 3831{
2586d566 3832 int res;
ae92bd17 3833 u32 mask;
1da177e4 3834 char *cmd;
1da177e4 3835
d8fd94d9 3836 if (!tp_features.hotkey)
1da177e4
LT		 3837 return -ENODEV;
3838
7646ea88 3839 if (mutex_lock_killable(&hotkey_mutex))
fc589a3c 3840 return -ERESTARTSYS;
40ca9fdf 3841
0d922e3b 3842 mask = hotkey_user_mask;
78f81cc4 3843
40ca9fdf 3844 res = 0;
1da177e4
LT		 3845 while ((cmd = next_cmd(&buf))) {
3846 if (strlencmp(cmd, "enable") == 0) {
406e988b 3847 hotkey_enabledisable_warn(1);
1da177e4 3848 } else if (strlencmp(cmd, "disable") == 0) {
406e988b 3849 hotkey_enabledisable_warn(0);
2586d566 3850 res = -EPERM;
1da177e4 3851 } else if (strlencmp(cmd, "reset") == 0) {
20c9aa46
HMH		 3852 mask = (hotkey_all_mask | hotkey_source_mask)
3853 & ~hotkey_reserved_mask;
1da177e4
LT		 3854 } else if (sscanf(cmd, "0x%x", &mask) == 1) {
3855 /* mask set */
3856 } else if (sscanf(cmd, "%x", &mask) == 1) {
3857 /* mask set */
40ca9fdf
HMH		 3858 } else {
3859 res = -EINVAL;
3860 goto errexit;
3861 }
1da177e4 3862 }
56e2c200 3863
0d922e3b 3864 if (!res) {
56e2c200
HMH		 3865 tpacpi_disclose_usertask("procfs hotkey",
3866 "set mask to 0x%08x\n", mask);
0d922e3b
HMH		 3867 res = hotkey_user_mask_set(mask);
3868 }
1da177e4 3869
40ca9fdf
HMH		 3870errexit:
3871 mutex_unlock(&hotkey_mutex);
3872 return res;
78f81cc4 3873}
1da177e4 3874
1ba90e3a 3875static const struct acpi_device_id ibm_htk_device_ids[] = {
9fbdaeb4
MI		 3876 {TPACPI_ACPI_IBM_HKEY_HID, 0},
3877 {TPACPI_ACPI_LENOVO_HKEY_HID, 0},
1ba90e3a
TR		 3878 {"", 0},
3879};
3880
8d376cd6 3881static struct tp_acpi_drv_struct ibm_hotkey_acpidriver = {
1ba90e3a 3882 .hid = ibm_htk_device_ids,
8d376cd6
HMH		 3883 .notify = hotkey_notify,
3884 .handle = &hkey_handle,
3885 .type = ACPI_DEVICE_NOTIFY,
3886};
3887
a5763f22
HMH		 3888static struct ibm_struct hotkey_driver_data = {
3889 .name = "hotkey",
a5763f22
HMH		 3890 .read = hotkey_read,
3891 .write = hotkey_write,
3892 .exit = hotkey_exit,
5c29d58f 3893 .resume = hotkey_resume,
a713b4d7 3894 .suspend = hotkey_suspend,
8d376cd6 3895 .acpi = &ibm_hotkey_acpidriver,
a5763f22
HMH		 3896};
3897
56b6aeb0
HMH		 3898/*************************************************************************
3899 * Bluetooth subdriver
3900 */
1da177e4 3901
f74a27d4
HMH		 3902enum {
3903 /* ACPI GBDC/SBDC bits */
3904 TP_ACPI_BLUETOOTH_HWPRESENT = 0x01, /* Bluetooth hw available */
3905 TP_ACPI_BLUETOOTH_RADIOSSW = 0x02, /* Bluetooth radio enabled */
153f8220 3906 TP_ACPI_BLUETOOTH_RESUMECTRL = 0x04, /* Bluetooth state at resume:
08fedfc9 3907 0 = disable, 1 = enable */
153f8220
HMH		 3908};
3909
3910enum {
3911 /* ACPI \BLTH commands */
3912 TP_ACPI_BLTH_GET_ULTRAPORT_ID = 0x00, /* Get Ultraport BT ID */
3913 TP_ACPI_BLTH_GET_PWR_ON_RESUME = 0x01, /* Get power-on-resume state */
3914 TP_ACPI_BLTH_PWR_ON_ON_RESUME = 0x02, /* Resume powered on */
3915 TP_ACPI_BLTH_PWR_OFF_ON_RESUME = 0x03, /* Resume powered off */
3916 TP_ACPI_BLTH_SAVE_STATE = 0x05, /* Save state for S4/S5 */
f74a27d4
HMH		 3917};
3918
bee4cd9b
HMH		 3919#define TPACPI_RFK_BLUETOOTH_SW_NAME "tpacpi_bluetooth_sw"
3920
19d337df 3921static int bluetooth_get_status(void)
07431ec8
HMH		 3922{
3923 int status;
3924
a73f3091
HMH		 3925#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
3926 if (dbg_bluetoothemul)
3927 return (tpacpi_bluetooth_emulstate) ?
19d337df 3928 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF;
a73f3091
HMH		 3929#endif
3930
07431ec8
HMH		 3931 if (!acpi_evalf(hkey_handle, &status, "GBDC", "d"))
3932 return -EIO;
3933
0e74dc26 3934 return ((status & TP_ACPI_BLUETOOTH_RADIOSSW) != 0) ?
19d337df 3935 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF;
07431ec8
HMH		 3936}
3937
19d337df 3938static int bluetooth_set_status(enum tpacpi_rfkill_state state)
0e74dc26
HMH		 3939{
3940 int status;
3941
bee4cd9b 3942 vdbg_printk(TPACPI_DBG_RFKILL,
19d337df
JB		 3943 "will attempt to %s bluetooth\n",
3944 (state == TPACPI_RFK_RADIO_ON) ? "enable" : "disable");
bee4cd9b 3945
a73f3091
HMH		 3946#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
3947 if (dbg_bluetoothemul) {
19d337df 3948 tpacpi_bluetooth_emulstate = (state == TPACPI_RFK_RADIO_ON);
a73f3091
HMH		 3949 return 0;
3950 }
3951#endif
3952
19d337df 3953 if (state == TPACPI_RFK_RADIO_ON)
08fedfc9
HMH		 3954 status = TP_ACPI_BLUETOOTH_RADIOSSW
3955 | TP_ACPI_BLUETOOTH_RESUMECTRL;
3956 else
3957 status = 0;
19d337df 3958
07431ec8
HMH		 3959 if (!acpi_evalf(hkey_handle, NULL, "SBDC", "vd", status))
3960 return -EIO;
3961
3962 return 0;
3963}
f74a27d4 3964
d3a6ade4
HMH		 3965/* sysfs bluetooth enable ---------------------------------------------- */
3966static ssize_t bluetooth_enable_show(struct device *dev,
3967 struct device_attribute *attr,
3968 char *buf)
3969{
19d337df
JB		 3970 return tpacpi_rfk_sysfs_enable_show(TPACPI_RFK_BLUETOOTH_SW_ID,
3971 attr, buf);
d3a6ade4
HMH		 3972}
3973
3974static ssize_t bluetooth_enable_store(struct device *dev,
3975 struct device_attribute *attr,
3976 const char *buf, size_t count)
3977{
19d337df
JB		 3978 return tpacpi_rfk_sysfs_enable_store(TPACPI_RFK_BLUETOOTH_SW_ID,
3979 attr, buf, count);
d3a6ade4
HMH		 3980}
3981
3982static struct device_attribute dev_attr_bluetooth_enable =
cc4c24e1 3983 __ATTR(bluetooth_enable, S_IWUSR | S_IRUGO,
d3a6ade4
HMH		 3984 bluetooth_enable_show, bluetooth_enable_store);
3985
3986/* --------------------------------------------------------------------- */
3987
3988static struct attribute *bluetooth_attributes[] = {
3989 &dev_attr_bluetooth_enable.attr,
3990 NULL
3991};
3992
3993static const struct attribute_group bluetooth_attr_group = {
d3a6ade4
HMH		 3994 .attrs = bluetooth_attributes,
3995};
3996
19d337df
JB		 3997static const struct tpacpi_rfk_ops bluetooth_tprfk_ops = {
3998 .get_status = bluetooth_get_status,
3999 .set_status = bluetooth_set_status,
4000};
0e74dc26 4001
90d9d3c7
HMH		 4002static void bluetooth_shutdown(void)
4003{
4004 /* Order firmware to save current state to NVRAM */
4005 if (!acpi_evalf(NULL, NULL, "\\BLTH", "vd",
4006 TP_ACPI_BLTH_SAVE_STATE))
0978e012 4007 pr_notice("failed to save bluetooth state to NVRAM\n");
bee4cd9b
HMH		 4008 else
4009 vdbg_printk(TPACPI_DBG_RFKILL,
4010 "bluestooth state saved to NVRAM\n");
90d9d3c7
HMH		 4011}
4012
07431ec8
HMH		 4013static void bluetooth_exit(void)
4014{
4015 sysfs_remove_group(&tpacpi_pdev->dev.kobj,
4016 &bluetooth_attr_group);
19d337df
JB		 4017
4018 tpacpi_destroy_rfkill(TPACPI_RFK_BLUETOOTH_SW_ID);
4019
4020 bluetooth_shutdown();
07431ec8
HMH		 4021}
4022
a5763f22 4023static int __init bluetooth_init(struct ibm_init_struct *iibm)
1da177e4 4024{
d3a6ade4 4025 int res;
d6fdd1e9
HMH		 4026 int status = 0;
4027
bee4cd9b
HMH		 4028 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL,
4029 "initializing bluetooth subdriver\n");
fe08bc4b 4030
e0c7dfe7 4031 TPACPI_ACPIHANDLE_INIT(hkey);
5fba344c 4032
78f81cc4
BD		 4033 /* bluetooth not supported on 570, 600e/x, 770e, 770x, A21e, A2xm/p,
4034 G4x, R30, R31, R40e, R50e, T20-22, X20-21 */
d8fd94d9 4035 tp_features.bluetooth = hkey_handle &&
d6fdd1e9
HMH		 4036 acpi_evalf(hkey_handle, &status, "GBDC", "qd");
4037
bee4cd9b
HMH		 4038 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL,
4039 "bluetooth is %s, status 0x%02x\n",
d6fdd1e9
HMH		 4040 str_supported(tp_features.bluetooth),
4041 status);
4042
a73f3091
HMH		 4043#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
4044 if (dbg_bluetoothemul) {
4045 tp_features.bluetooth = 1;
0978e012 4046 pr_info("bluetooth switch emulation enabled\n");
a73f3091
HMH		 4047 } else
4048#endif
3a872080
HMH		 4049 if (tp_features.bluetooth &&
4050 !(status & TP_ACPI_BLUETOOTH_HWPRESENT)) {
4051 /* no bluetooth hardware present in system */
4052 tp_features.bluetooth = 0;
bee4cd9b 4053 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL,
3a872080
HMH		 4054 "bluetooth hardware not installed\n");
4055 }
4056
0e74dc26
HMH		 4057 if (!tp_features.bluetooth)
4058 return 1;
4059
0e74dc26 4060 res = tpacpi_new_rfkill(TPACPI_RFK_BLUETOOTH_SW_ID,
19d337df 4061 &bluetooth_tprfk_ops,
0e74dc26 4062 RFKILL_TYPE_BLUETOOTH,
bee4cd9b 4063 TPACPI_RFK_BLUETOOTH_SW_NAME,
19d337df
JB		 4064 true);
4065 if (res)
4066 return res;
4067
4068 res = sysfs_create_group(&tpacpi_pdev->dev.kobj,
4069 &bluetooth_attr_group);
0e74dc26 4070 if (res) {
19d337df 4071 tpacpi_destroy_rfkill(TPACPI_RFK_BLUETOOTH_SW_ID);
0e74dc26 4072 return res;
d6fdd1e9 4073 }
fe08bc4b 4074
0e74dc26 4075 return 0;
1da177e4
LT		 4076}
4077
d3a6ade4 4078/* procfs -------------------------------------------------------------- */
887965e6 4079static int bluetooth_read(struct seq_file *m)
1da177e4 4080{
887965e6 4081 return tpacpi_rfk_procfs_read(TPACPI_RFK_BLUETOOTH_SW_ID, m);
1da177e4
LT		 4082}
4083
78f81cc4 4084static int bluetooth_write(char *buf)
1da177e4 4085{
19d337df 4086 return tpacpi_rfk_procfs_write(TPACPI_RFK_BLUETOOTH_SW_ID, buf);
1da177e4
LT		 4087}
4088
a5763f22
HMH		 4089static struct ibm_struct bluetooth_driver_data = {
4090 .name = "bluetooth",
4091 .read = bluetooth_read,
4092 .write = bluetooth_write,
d3a6ade4 4093 .exit = bluetooth_exit,
90d9d3c7 4094 .shutdown = bluetooth_shutdown,
a5763f22
HMH		 4095};
4096
56b6aeb0
HMH		 4097/*************************************************************************
4098 * Wan subdriver
4099 */
4100
f74a27d4
HMH		 4101enum {
4102 /* ACPI GWAN/SWAN bits */
4103 TP_ACPI_WANCARD_HWPRESENT = 0x01, /* Wan hw available */
4104 TP_ACPI_WANCARD_RADIOSSW = 0x02, /* Wan radio enabled */
153f8220 4105 TP_ACPI_WANCARD_RESUMECTRL = 0x04, /* Wan state at resume:
08fedfc9 4106 0 = disable, 1 = enable */
f74a27d4
HMH		 4107};
4108
bee4cd9b
HMH		 4109#define TPACPI_RFK_WWAN_SW_NAME "tpacpi_wwan_sw"
4110
19d337df 4111static int wan_get_status(void)
07431ec8
HMH		 4112{
4113 int status;
4114
a73f3091
HMH		 4115#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
4116 if (dbg_wwanemul)
4117 return (tpacpi_wwan_emulstate) ?
19d337df 4118 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF;
a73f3091
HMH		 4119#endif
4120
07431ec8
HMH		 4121 if (!acpi_evalf(hkey_handle, &status, "GWAN", "d"))
4122 return -EIO;
4123
0e74dc26 4124 return ((status & TP_ACPI_WANCARD_RADIOSSW) != 0) ?
19d337df 4125 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF;
0e74dc26
HMH		 4126}
4127
19d337df 4128static int wan_set_status(enum tpacpi_rfkill_state state)
07431ec8
HMH		 4129{
4130 int status;
4131
bee4cd9b 4132 vdbg_printk(TPACPI_DBG_RFKILL,
19d337df
JB		 4133 "will attempt to %s wwan\n",
4134 (state == TPACPI_RFK_RADIO_ON) ? "enable" : "disable");
bee4cd9b 4135
a73f3091
HMH		 4136#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
4137 if (dbg_wwanemul) {
19d337df 4138 tpacpi_wwan_emulstate = (state == TPACPI_RFK_RADIO_ON);
a73f3091
HMH		 4139 return 0;
4140 }
4141#endif
4142
19d337df 4143 if (state == TPACPI_RFK_RADIO_ON)
08fedfc9
HMH		 4144 status = TP_ACPI_WANCARD_RADIOSSW
4145 | TP_ACPI_WANCARD_RESUMECTRL;
4146 else
4147 status = 0;
19d337df 4148
07431ec8
HMH		 4149 if (!acpi_evalf(hkey_handle, NULL, "SWAN", "vd", status))
4150 return -EIO;
4151
4152 return 0;
4153}
f74a27d4 4154
d3a6ade4
HMH		 4155/* sysfs wan enable ---------------------------------------------------- */
4156static ssize_t wan_enable_show(struct device *dev,
4157 struct device_attribute *attr,
4158 char *buf)
4159{
19d337df
JB		 4160 return tpacpi_rfk_sysfs_enable_show(TPACPI_RFK_WWAN_SW_ID,
4161 attr, buf);
d3a6ade4
HMH		 4162}
4163
4164static ssize_t wan_enable_store(struct device *dev,
4165 struct device_attribute *attr,
4166 const char *buf, size_t count)
4167{
19d337df
JB		 4168 return tpacpi_rfk_sysfs_enable_store(TPACPI_RFK_WWAN_SW_ID,
4169 attr, buf, count);
d3a6ade4
HMH		 4170}
4171
4172static struct device_attribute dev_attr_wan_enable =
cc4c24e1 4173 __ATTR(wwan_enable, S_IWUSR | S_IRUGO,
d3a6ade4
HMH		 4174 wan_enable_show, wan_enable_store);
4175
4176/* --------------------------------------------------------------------- */
4177
4178static struct attribute *wan_attributes[] = {
4179 &dev_attr_wan_enable.attr,
4180 NULL
4181};
4182
4183static const struct attribute_group wan_attr_group = {
d3a6ade4
HMH		 4184 .attrs = wan_attributes,
4185};
4186
19d337df
JB		 4187static const struct tpacpi_rfk_ops wan_tprfk_ops = {
4188 .get_status = wan_get_status,
4189 .set_status = wan_set_status,
4190};
0e74dc26 4191
90d9d3c7
HMH		 4192static void wan_shutdown(void)
4193{
4194 /* Order firmware to save current state to NVRAM */
4195 if (!acpi_evalf(NULL, NULL, "\\WGSV", "vd",
4196 TP_ACPI_WGSV_SAVE_STATE))
0978e012 4197 pr_notice("failed to save WWAN state to NVRAM\n");
bee4cd9b
HMH		 4198 else
4199 vdbg_printk(TPACPI_DBG_RFKILL,
4200 "WWAN state saved to NVRAM\n");
90d9d3c7
HMH		 4201}
4202
07431ec8
HMH		 4203static void wan_exit(void)
4204{
4205 sysfs_remove_group(&tpacpi_pdev->dev.kobj,
4206 &wan_attr_group);
19d337df
JB		 4207
4208 tpacpi_destroy_rfkill(TPACPI_RFK_WWAN_SW_ID);
4209
4210 wan_shutdown();
07431ec8
HMH		 4211}
4212
a5763f22 4213static int __init wan_init(struct ibm_init_struct *iibm)
42adb53c 4214{
d3a6ade4 4215 int res;
d6fdd1e9
HMH		 4216 int status = 0;
4217
bee4cd9b
HMH		 4218 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL,
4219 "initializing wan subdriver\n");
fe08bc4b 4220
e0c7dfe7 4221 TPACPI_ACPIHANDLE_INIT(hkey);
5fba344c 4222
d8fd94d9 4223 tp_features.wan = hkey_handle &&
d6fdd1e9
HMH		 4224 acpi_evalf(hkey_handle, &status, "GWAN", "qd");
4225
bee4cd9b
HMH		 4226 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL,
4227 "wan is %s, status 0x%02x\n",
d6fdd1e9
HMH		 4228 str_supported(tp_features.wan),
4229 status);
4230
a73f3091
HMH		 4231#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
4232 if (dbg_wwanemul) {
4233 tp_features.wan = 1;
0978e012 4234 pr_info("wwan switch emulation enabled\n");
a73f3091
HMH		 4235 } else
4236#endif
3a872080
HMH		 4237 if (tp_features.wan &&
4238 !(status & TP_ACPI_WANCARD_HWPRESENT)) {
4239 /* no wan hardware present in system */
4240 tp_features.wan = 0;
bee4cd9b 4241 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL,
3a872080
HMH		 4242 "wan hardware not installed\n");
4243 }
4244
0e74dc26
HMH		 4245 if (!tp_features.wan)
4246 return 1;
4247
0e74dc26 4248 res = tpacpi_new_rfkill(TPACPI_RFK_WWAN_SW_ID,
19d337df 4249 &wan_tprfk_ops,
0e74dc26 4250 RFKILL_TYPE_WWAN,
bee4cd9b 4251 TPACPI_RFK_WWAN_SW_NAME,
19d337df
JB		 4252 true);
4253 if (res)
4254 return res;
4255
4256 res = sysfs_create_group(&tpacpi_pdev->dev.kobj,
4257 &wan_attr_group);
4258
0e74dc26 4259 if (res) {
19d337df 4260 tpacpi_destroy_rfkill(TPACPI_RFK_WWAN_SW_ID);
0e74dc26 4261 return res;
d6fdd1e9 4262 }
fe08bc4b 4263
0e74dc26 4264 return 0;
42adb53c
JF		 4265}
4266
d3a6ade4 4267/* procfs -------------------------------------------------------------- */
887965e6 4268static int wan_read(struct seq_file *m)
42adb53c 4269{
887965e6 4270 return tpacpi_rfk_procfs_read(TPACPI_RFK_WWAN_SW_ID, m);
42adb53c
JF		 4271}
4272
4273static int wan_write(char *buf)
4274{
19d337df 4275 return tpacpi_rfk_procfs_write(TPACPI_RFK_WWAN_SW_ID, buf);
42adb53c
JF		 4276}
4277
a5763f22
HMH		 4278static struct ibm_struct wan_driver_data = {
4279 .name = "wan",
4280 .read = wan_read,
4281 .write = wan_write,
d3a6ade4 4282 .exit = wan_exit,
90d9d3c7 4283 .shutdown = wan_shutdown,
a5763f22
HMH		 4284};
4285
0045c0aa
HMH		 4286/*************************************************************************
4287 * UWB subdriver
4288 */
4289
4290enum {
4291 /* ACPI GUWB/SUWB bits */
4292 TP_ACPI_UWB_HWPRESENT = 0x01, /* UWB hw available */
4293 TP_ACPI_UWB_RADIOSSW = 0x02, /* UWB radio enabled */
4294};
4295
bee4cd9b
HMH		 4296#define TPACPI_RFK_UWB_SW_NAME "tpacpi_uwb_sw"
4297
19d337df 4298static int uwb_get_status(void)
0045c0aa
HMH		 4299{
4300 int status;
4301
0045c0aa
HMH		 4302#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
4303 if (dbg_uwbemul)
4304 return (tpacpi_uwb_emulstate) ?
19d337df 4305 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF;
0045c0aa
HMH		 4306#endif
4307
4308 if (!acpi_evalf(hkey_handle, &status, "GUWB", "d"))
4309 return -EIO;
4310
4311 return ((status & TP_ACPI_UWB_RADIOSSW) != 0) ?
19d337df 4312 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF;
0045c0aa
HMH		 4313}
4314
19d337df 4315static int uwb_set_status(enum tpacpi_rfkill_state state)
0045c0aa
HMH		 4316{
4317 int status;
4318
bee4cd9b 4319 vdbg_printk(TPACPI_DBG_RFKILL,
19d337df
JB		 4320 "will attempt to %s UWB\n",
4321 (state == TPACPI_RFK_RADIO_ON) ? "enable" : "disable");
bee4cd9b 4322
0045c0aa
HMH		 4323#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
4324 if (dbg_uwbemul) {
19d337df 4325 tpacpi_uwb_emulstate = (state == TPACPI_RFK_RADIO_ON);
0045c0aa
HMH		 4326 return 0;
4327 }
4328#endif
4329
19d337df
JB		 4330 if (state == TPACPI_RFK_RADIO_ON)
4331 status = TP_ACPI_UWB_RADIOSSW;
4332 else
4333 status = 0;
4334
0045c0aa
HMH		 4335 if (!acpi_evalf(hkey_handle, NULL, "SUWB", "vd", status))
4336 return -EIO;
4337
0045c0aa
HMH		 4338 return 0;
4339}
4340
4341/* --------------------------------------------------------------------- */
4342
19d337df
JB		 4343static const struct tpacpi_rfk_ops uwb_tprfk_ops = {
4344 .get_status = uwb_get_status,
4345 .set_status = uwb_set_status,
4346};
0045c0aa
HMH		 4347
4348static void uwb_exit(void)
4349{
19d337df 4350 tpacpi_destroy_rfkill(TPACPI_RFK_UWB_SW_ID);
0045c0aa
HMH		 4351}
4352
4353static int __init uwb_init(struct ibm_init_struct *iibm)
4354{
4355 int res;
4356 int status = 0;
4357
bee4cd9b
HMH		 4358 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL,
4359 "initializing uwb subdriver\n");
0045c0aa
HMH		 4360
4361 TPACPI_ACPIHANDLE_INIT(hkey);
4362
4363 tp_features.uwb = hkey_handle &&
4364 acpi_evalf(hkey_handle, &status, "GUWB", "qd");
4365
bee4cd9b
HMH		 4366 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL,
4367 "uwb is %s, status 0x%02x\n",
0045c0aa
HMH		 4368 str_supported(tp_features.uwb),
4369 status);
4370
4371#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
4372 if (dbg_uwbemul) {
4373 tp_features.uwb = 1;
0978e012 4374 pr_info("uwb switch emulation enabled\n");
0045c0aa
HMH		 4375 } else
4376#endif
4377 if (tp_features.uwb &&
4378 !(status & TP_ACPI_UWB_HWPRESENT)) {
4379 /* no uwb hardware present in system */
4380 tp_features.uwb = 0;
4381 dbg_printk(TPACPI_DBG_INIT,
4382 "uwb hardware not installed\n");
4383 }
4384
4385 if (!tp_features.uwb)
4386 return 1;
4387
4388 res = tpacpi_new_rfkill(TPACPI_RFK_UWB_SW_ID,
19d337df 4389 &uwb_tprfk_ops,
0045c0aa 4390 RFKILL_TYPE_UWB,
bee4cd9b 4391 TPACPI_RFK_UWB_SW_NAME,
19d337df 4392 false);
0045c0aa
HMH		 4393 return res;
4394}
4395
4396static struct ibm_struct uwb_driver_data = {
4397 .name = "uwb",
4398 .exit = uwb_exit,
4399 .flags.experimental = 1,
4400};
4401
56b6aeb0
HMH		 4402/*************************************************************************
4403 * Video subdriver
4404 */
4405
d7c1d17d
HMH		 4406#ifdef CONFIG_THINKPAD_ACPI_VIDEO
4407
f74a27d4
HMH		 4408enum video_access_mode {
4409 TPACPI_VIDEO_NONE = 0,
4410 TPACPI_VIDEO_570, /* 570 */
4411 TPACPI_VIDEO_770, /* 600e/x, 770e, 770x */
4412 TPACPI_VIDEO_NEW, /* all others */
4413};
4414
4415enum { /* video status flags, based on VIDEO_570 */
4416 TP_ACPI_VIDEO_S_LCD = 0x01, /* LCD output enabled */
4417 TP_ACPI_VIDEO_S_CRT = 0x02, /* CRT output enabled */
4418 TP_ACPI_VIDEO_S_DVI = 0x08, /* DVI output enabled */
4419};
4420
4421enum { /* TPACPI_VIDEO_570 constants */
4422 TP_ACPI_VIDEO_570_PHSCMD = 0x87, /* unknown magic constant :( */
4423 TP_ACPI_VIDEO_570_PHSMASK = 0x03, /* PHS bits that map to
4424 * video_status_flags */
4425 TP_ACPI_VIDEO_570_PHS2CMD = 0x8b, /* unknown magic constant :( */
4426 TP_ACPI_VIDEO_570_PHS2SET = 0x80, /* unknown magic constant :( */
4427};
4428
9a8e1738
HMH		 4429static enum video_access_mode video_supported;
4430static int video_orig_autosw;
78f81cc4 4431
f74a27d4
HMH		 4432static int video_autosw_get(void);
4433static int video_autosw_set(int enable);
4434
112a6ee0
JP		 4435TPACPI_HANDLE(vid, root,
4436 "\\_SB.PCI.AGP.VGA", /* 570 */
4437 "\\_SB.PCI0.AGP0.VID0", /* 600e/x, 770x */
4438 "\\_SB.PCI0.VID0", /* 770e */
4439 "\\_SB.PCI0.VID", /* A21e, G4x, R50e, X30, X40 */
4440 "\\_SB.PCI0.AGP.VGA", /* X100e and a few others */
4441 "\\_SB.PCI0.AGP.VID", /* all others */
4442 ); /* R30, R31 */
4443
e0c7dfe7 4444TPACPI_HANDLE(vid2, root, "\\_SB.PCI0.AGPB.VID"); /* G41 */
56b6aeb0 4445
a5763f22 4446static int __init video_init(struct ibm_init_struct *iibm)
1da177e4 4447{
78f81cc4
BD		 4448 int ivga;
4449
fe08bc4b
HMH		 4450 vdbg_printk(TPACPI_DBG_INIT, "initializing video subdriver\n");
4451
e0c7dfe7 4452 TPACPI_ACPIHANDLE_INIT(vid);
e28393c0
HMH		 4453 if (tpacpi_is_ibm())
4454 TPACPI_ACPIHANDLE_INIT(vid2);
5fba344c 4455
78f81cc4
BD		 4456 if (vid2_handle && acpi_evalf(NULL, &ivga, "\\IVGA", "d") && ivga)
4457 /* G41, assume IVGA doesn't change */
4458 vid_handle = vid2_handle;
4459
4460 if (!vid_handle)
4461 /* video switching not supported on R30, R31 */
efa27145 4462 video_supported = TPACPI_VIDEO_NONE;
e28393c0
HMH		 4463 else if (tpacpi_is_ibm() &&
4464 acpi_evalf(vid_handle, &video_orig_autosw, "SWIT", "qd"))
78f81cc4 4465 /* 570 */
efa27145 4466 video_supported = TPACPI_VIDEO_570;
e28393c0
HMH		 4467 else if (tpacpi_is_ibm() &&
4468 acpi_evalf(vid_handle, &video_orig_autosw, "^VADL", "qd"))
78f81cc4 4469 /* 600e/x, 770e, 770x */
efa27145 4470 video_supported = TPACPI_VIDEO_770;
78f81cc4
BD		 4471 else
4472 /* all others */
efa27145 4473 video_supported = TPACPI_VIDEO_NEW;
1da177e4 4474
fe08bc4b
HMH		 4475 vdbg_printk(TPACPI_DBG_INIT, "video is %s, mode %d\n",
4476 str_supported(video_supported != TPACPI_VIDEO_NONE),
4477 video_supported);
4478
5fba344c 4479 return (video_supported != TPACPI_VIDEO_NONE)? 0 : 1;
1da177e4
LT		 4480}
4481
56b6aeb0
HMH		 4482static void video_exit(void)
4483{
83f34724
HMH		 4484 dbg_printk(TPACPI_DBG_EXIT,
4485 "restoring original video autoswitch mode\n");
4486 if (video_autosw_set(video_orig_autosw))
0978e012 4487 pr_err("error while trying to restore original "
83f34724 4488 "video autoswitch mode\n");
56b6aeb0
HMH		 4489}
4490
83f34724 4491static int video_outputsw_get(void)
1da177e4
LT		 4492{
4493 int status = 0;
4494 int i;
4495
83f34724
HMH		 4496 switch (video_supported) {
4497 case TPACPI_VIDEO_570:
4498 if (!acpi_evalf(NULL, &i, "\\_SB.PHS", "dd",
4499 TP_ACPI_VIDEO_570_PHSCMD))
4500 return -EIO;
4501 status = i & TP_ACPI_VIDEO_570_PHSMASK;
4502 break;
4503 case TPACPI_VIDEO_770:
4504 if (!acpi_evalf(NULL, &i, "\\VCDL", "d"))
4505 return -EIO;
4506 if (i)
4507 status |= TP_ACPI_VIDEO_S_LCD;
4508 if (!acpi_evalf(NULL, &i, "\\VCDC", "d"))
4509 return -EIO;
4510 if (i)
4511 status |= TP_ACPI_VIDEO_S_CRT;
4512 break;
4513 case TPACPI_VIDEO_NEW:
4514 if (!acpi_evalf(NULL, NULL, "\\VUPS", "vd", 1) ||
4515 !acpi_evalf(NULL, &i, "\\VCDC", "d"))
4516 return -EIO;
4517 if (i)
4518 status |= TP_ACPI_VIDEO_S_CRT;
4519
4520 if (!acpi_evalf(NULL, NULL, "\\VUPS", "vd", 0) ||
4521 !acpi_evalf(NULL, &i, "\\VCDL", "d"))
4522 return -EIO;
4523 if (i)
4524 status |= TP_ACPI_VIDEO_S_LCD;
4525 if (!acpi_evalf(NULL, &i, "\\VCDD", "d"))
4526 return -EIO;
4527 if (i)
4528 status |= TP_ACPI_VIDEO_S_DVI;
4529 break;
4530 default:
4531 return -ENOSYS;
78f81cc4
BD		 4532 }
4533
4534 return status;
4535}
1da177e4 4536
83f34724 4537static int video_outputsw_set(int status)
78f81cc4 4538{
83f34724
HMH		 4539 int autosw;
4540 int res = 0;
4541
4542 switch (video_supported) {
4543 case TPACPI_VIDEO_570:
4544 res = acpi_evalf(NULL, NULL,
4545 "\\_SB.PHS2", "vdd",
4546 TP_ACPI_VIDEO_570_PHS2CMD,
4547 status | TP_ACPI_VIDEO_570_PHS2SET);
4548 break;
4549 case TPACPI_VIDEO_770:
4550 autosw = video_autosw_get();
4551 if (autosw < 0)
4552 return autosw;
1da177e4 4553
83f34724
HMH		 4554 res = video_autosw_set(1);
4555 if (res)
4556 return res;
4557 res = acpi_evalf(vid_handle, NULL,
4558 "ASWT", "vdd", status * 0x100, 0);
4559 if (!autosw && video_autosw_set(autosw)) {
0978e012 4560 pr_err("video auto-switch left enabled due to error\n");
83f34724
HMH		 4561 return -EIO;
4562 }
4563 break;
4564 case TPACPI_VIDEO_NEW:
4565 res = acpi_evalf(NULL, NULL, "\\VUPS", "vd", 0x80) &&
35ff8b9f 4566 acpi_evalf(NULL, NULL, "\\VSDS", "vdd", status, 1);
83f34724
HMH		 4567 break;
4568 default:
4569 return -ENOSYS;
4570 }
1da177e4 4571
83f34724 4572 return (res)? 0 : -EIO;
1da177e4
LT		 4573}
4574
83f34724 4575static int video_autosw_get(void)
78f81cc4 4576{
83f34724 4577 int autosw = 0;
78f81cc4 4578
83f34724
HMH		 4579 switch (video_supported) {
4580 case TPACPI_VIDEO_570:
4581 if (!acpi_evalf(vid_handle, &autosw, "SWIT", "d"))
4582 return -EIO;
4583 break;
4584 case TPACPI_VIDEO_770:
4585 case TPACPI_VIDEO_NEW:
4586 if (!acpi_evalf(vid_handle, &autosw, "^VDEE", "d"))
4587 return -EIO;
4588 break;
4589 default:
4590 return -ENOSYS;
4591 }
78f81cc4 4592
83f34724 4593 return autosw & 1;
78f81cc4
BD		 4594}
4595
83f34724 4596static int video_autosw_set(int enable)
78f81cc4 4597{
83f34724
HMH		 4598 if (!acpi_evalf(vid_handle, NULL, "_DOS", "vd", (enable)? 1 : 0))
4599 return -EIO;
4600 return 0;
78f81cc4
BD		 4601}
4602
83f34724 4603static int video_outputsw_cycle(void)
78f81cc4 4604{
83f34724
HMH		 4605 int autosw = video_autosw_get();
4606 int res;
78f81cc4 4607
83f34724
HMH		 4608 if (autosw < 0)
4609 return autosw;
78f81cc4 4610
83f34724
HMH		 4611 switch (video_supported) {
4612 case TPACPI_VIDEO_570:
4613 res = video_autosw_set(1);
4614 if (res)
4615 return res;
4616 res = acpi_evalf(ec_handle, NULL, "_Q16", "v");
4617 break;
4618 case TPACPI_VIDEO_770:
4619 case TPACPI_VIDEO_NEW:
4620 res = video_autosw_set(1);
4621 if (res)
4622 return res;
4623 res = acpi_evalf(vid_handle, NULL, "VSWT", "v");
4624 break;
4625 default:
4626 return -ENOSYS;
4627 }
4628 if (!autosw && video_autosw_set(autosw)) {
0978e012 4629 pr_err("video auto-switch left enabled due to error\n");
83f34724 4630 return -EIO;
78f81cc4
BD		 4631 }
4632
83f34724
HMH		 4633 return (res)? 0 : -EIO;
4634}
4635
4636static int video_expand_toggle(void)
4637{
4638 switch (video_supported) {
4639 case TPACPI_VIDEO_570:
4640 return acpi_evalf(ec_handle, NULL, "_Q17", "v")?
4641 0 : -EIO;
4642 case TPACPI_VIDEO_770:
4643 return acpi_evalf(vid_handle, NULL, "VEXP", "v")?
4644 0 : -EIO;
4645 case TPACPI_VIDEO_NEW:
4646 return acpi_evalf(NULL, NULL, "\\VEXP", "v")?
4647 0 : -EIO;
4648 default:
4649 return -ENOSYS;
4650 }
4651 /* not reached */
78f81cc4
BD		 4652}
4653
887965e6 4654static int video_read(struct seq_file *m)
56b6aeb0 4655{
83f34724 4656 int status, autosw;
56b6aeb0 4657
83f34724 4658 if (video_supported == TPACPI_VIDEO_NONE) {
887965e6
AD		 4659 seq_printf(m, "status:\t\tnot supported\n");
4660 return 0;
56b6aeb0
HMH		 4661 }
4662
b525c06c
HMH		 4663 /* Even reads can crash X.org, so... */
4664 if (!capable(CAP_SYS_ADMIN))
4665 return -EPERM;
4666
83f34724
HMH		 4667 status = video_outputsw_get();
4668 if (status < 0)
4669 return status;
4670
4671 autosw = video_autosw_get();
4672 if (autosw < 0)
4673 return autosw;
4674
887965e6
AD		 4675 seq_printf(m, "status:\t\tsupported\n");
4676 seq_printf(m, "lcd:\t\t%s\n", enabled(status, 0));
4677 seq_printf(m, "crt:\t\t%s\n", enabled(status, 1));
efa27145 4678 if (video_supported == TPACPI_VIDEO_NEW)
887965e6
AD		 4679 seq_printf(m, "dvi:\t\t%s\n", enabled(status, 3));
4680 seq_printf(m, "auto:\t\t%s\n", enabled(autosw, 0));
4681 seq_printf(m, "commands:\tlcd_enable, lcd_disable\n");
4682 seq_printf(m, "commands:\tcrt_enable, crt_disable\n");
efa27145 4683 if (video_supported == TPACPI_VIDEO_NEW)
887965e6
AD		 4684 seq_printf(m, "commands:\tdvi_enable, dvi_disable\n");
4685 seq_printf(m, "commands:\tauto_enable, auto_disable\n");
4686 seq_printf(m, "commands:\tvideo_switch, expand_toggle\n");
56b6aeb0 4687
887965e6 4688 return 0;
56b6aeb0
HMH		 4689}
4690
78f81cc4 4691static int video_write(char *buf)
1da177e4
LT		 4692{
4693 char *cmd;
4694 int enable, disable, status;
83f34724 4695 int res;
1da177e4 4696
83f34724 4697 if (video_supported == TPACPI_VIDEO_NONE)
78f81cc4
BD		 4698 return -ENODEV;
4699
b525c06c
HMH		 4700 /* Even reads can crash X.org, let alone writes... */
4701 if (!capable(CAP_SYS_ADMIN))
4702 return -EPERM;
4703
83f34724
HMH		 4704 enable = 0;
4705 disable = 0;
1da177e4
LT		 4706
4707 while ((cmd = next_cmd(&buf))) {
4708 if (strlencmp(cmd, "lcd_enable") == 0) {
83f34724 4709 enable |= TP_ACPI_VIDEO_S_LCD;
1da177e4 4710 } else if (strlencmp(cmd, "lcd_disable") == 0) {
83f34724 4711 disable |= TP_ACPI_VIDEO_S_LCD;
1da177e4 4712 } else if (strlencmp(cmd, "crt_enable") == 0) {
83f34724 4713 enable |= TP_ACPI_VIDEO_S_CRT;
1da177e4 4714 } else if (strlencmp(cmd, "crt_disable") == 0) {
83f34724 4715 disable |= TP_ACPI_VIDEO_S_CRT;
efa27145 4716 } else if (video_supported == TPACPI_VIDEO_NEW &&
78f81cc4 4717 strlencmp(cmd, "dvi_enable") == 0) {
83f34724 4718 enable |= TP_ACPI_VIDEO_S_DVI;
efa27145 4719 } else if (video_supported == TPACPI_VIDEO_NEW &&
78f81cc4 4720 strlencmp(cmd, "dvi_disable") == 0) {
83f34724 4721 disable |= TP_ACPI_VIDEO_S_DVI;
1da177e4 4722 } else if (strlencmp(cmd, "auto_enable") == 0) {
83f34724
HMH		 4723 res = video_autosw_set(1);
4724 if (res)
4725 return res;
1da177e4 4726 } else if (strlencmp(cmd, "auto_disable") == 0) {
83f34724
HMH		 4727 res = video_autosw_set(0);
4728 if (res)
4729 return res;
1da177e4 4730 } else if (strlencmp(cmd, "video_switch") == 0) {
83f34724
HMH		 4731 res = video_outputsw_cycle();
4732 if (res)
4733 return res;
1da177e4 4734 } else if (strlencmp(cmd, "expand_toggle") == 0) {
83f34724
HMH		 4735 res = video_expand_toggle();
4736 if (res)
4737 return res;
1da177e4
LT		 4738 } else
4739 return -EINVAL;
4740 }
4741
4742 if (enable || disable) {
83f34724
HMH		 4743 status = video_outputsw_get();
4744 if (status < 0)
4745 return status;
4746 res = video_outputsw_set((status & ~disable) | enable);
4747 if (res)
4748 return res;
1da177e4
LT		 4749 }
4750
4751 return 0;
4752}
4753
a5763f22
HMH		 4754static struct ibm_struct video_driver_data = {
4755 .name = "video",
4756 .read = video_read,
4757 .write = video_write,
4758 .exit = video_exit,
4759};
4760
d7c1d17d
HMH		 4761#endif /* CONFIG_THINKPAD_ACPI_VIDEO */
4762
56b6aeb0
HMH		 4763/*************************************************************************
4764 * Light (thinklight) subdriver
4765 */
1da177e4 4766
e0c7dfe7
HMH		 4767TPACPI_HANDLE(lght, root, "\\LGHT"); /* A21e, A2xm/p, T20-22, X20-21 */
4768TPACPI_HANDLE(ledb, ec, "LEDB"); /* G4x */
56b6aeb0 4769
4fa6811b
HMH		 4770static int light_get_status(void)
4771{
4772 int status = 0;
4773
4774 if (tp_features.light_status) {
4775 if (!acpi_evalf(ec_handle, &status, "KBLT", "d"))
4776 return -EIO;
4777 return (!!status);
4778 }
4779
4780 return -ENXIO;
4781}
4782
4783static int light_set_status(int status)
4784{
4785 int rc;
4786
4787 if (tp_features.light) {
4788 if (cmos_handle) {
4789 rc = acpi_evalf(cmos_handle, NULL, NULL, "vd",
4790 (status)?
4791 TP_CMOS_THINKLIGHT_ON :
4792 TP_CMOS_THINKLIGHT_OFF);
4793 } else {
4794 rc = acpi_evalf(lght_handle, NULL, NULL, "vd",
4795 (status)? 1 : 0);
4796 }
4797 return (rc)? 0 : -EIO;
4798 }
4799
4800 return -ENXIO;
4801}
4802
e306501d
HMH		 4803static void light_set_status_worker(struct work_struct *work)
4804{
4805 struct tpacpi_led_classdev *data =
4806 container_of(work, struct tpacpi_led_classdev, work);
4807
4808 if (likely(tpacpi_lifecycle == TPACPI_LIFE_RUNNING))
75bd3bf2 4809 light_set_status((data->new_state != TPACPI_LED_OFF));
e306501d
HMH		 4810}
4811
4812static void light_sysfs_set(struct led_classdev *led_cdev,
4813 enum led_brightness brightness)
4814{
4815 struct tpacpi_led_classdev *data =
4816 container_of(led_cdev,
4817 struct tpacpi_led_classdev,
4818 led_classdev);
75bd3bf2
HMH		 4819 data->new_state = (brightness != LED_OFF) ?
4820 TPACPI_LED_ON : TPACPI_LED_OFF;
e0e3c061 4821 queue_work(tpacpi_wq, &data->work);
e306501d
HMH		 4822}
4823
4824static enum led_brightness light_sysfs_get(struct led_classdev *led_cdev)
4825{
4826 return (light_get_status() == 1)? LED_FULL : LED_OFF;
4827}
4828
4829static struct tpacpi_led_classdev tpacpi_led_thinklight = {
4830 .led_classdev = {
4831 .name = "tpacpi::thinklight",
4832 .brightness_set = &light_sysfs_set,
4833 .brightness_get = &light_sysfs_get,
4834 }
4835};
4836
a5763f22 4837static int __init light_init(struct ibm_init_struct *iibm)
1da177e4 4838{
9c0a76e1 4839 int rc;
e306501d 4840
fe08bc4b
HMH		 4841 vdbg_printk(TPACPI_DBG_INIT, "initializing light subdriver\n");
4842
e28393c0
HMH		 4843 if (tpacpi_is_ibm()) {
4844 TPACPI_ACPIHANDLE_INIT(ledb);
4845 TPACPI_ACPIHANDLE_INIT(lght);
4846 }
e0c7dfe7 4847 TPACPI_ACPIHANDLE_INIT(cmos);
e306501d 4848 INIT_WORK(&tpacpi_led_thinklight.work, light_set_status_worker);
5fba344c 4849
78f81cc4 4850 /* light not supported on 570, 600e/x, 770e, 770x, G4x, R30, R31 */
d8fd94d9 4851 tp_features.light = (cmos_handle || lght_handle) && !ledb_handle;
78f81cc4 4852
d8fd94d9 4853 if (tp_features.light)
78f81cc4
BD		 4854 /* light status not supported on
4855 570, 600e/x, 770e, 770x, G4x, R30, R31, R32, X20 */
d8fd94d9
HMH		 4856 tp_features.light_status =
4857 acpi_evalf(ec_handle, NULL, "KBLT", "qv");
1da177e4 4858
9c0a76e1
HMH		 4859 vdbg_printk(TPACPI_DBG_INIT, "light is %s, light status is %s\n",
4860 str_supported(tp_features.light),
4861 str_supported(tp_features.light_status));
fe08bc4b 4862
9c0a76e1
HMH		 4863 if (!tp_features.light)
4864 return 1;
4865
4866 rc = led_classdev_register(&tpacpi_pdev->dev,
4867 &tpacpi_led_thinklight.led_classdev);
e306501d
HMH		 4868
4869 if (rc < 0) {
4870 tp_features.light = 0;
4871 tp_features.light_status = 0;
9c0a76e1
HMH		 4872 } else {
4873 rc = 0;
e306501d 4874 }
9c0a76e1 4875
e306501d
HMH		 4876 return rc;
4877}
4878
4879static void light_exit(void)
4880{
4881 led_classdev_unregister(&tpacpi_led_thinklight.led_classdev);
4882 if (work_pending(&tpacpi_led_thinklight.work))
e0e3c061 4883 flush_workqueue(tpacpi_wq);
1da177e4
LT		 4884}
4885
887965e6 4886static int light_read(struct seq_file *m)
1da177e4 4887{
4fa6811b 4888 int status;
1da177e4 4889
d8fd94d9 4890 if (!tp_features.light) {
887965e6 4891 seq_printf(m, "status:\t\tnot supported\n");
d8fd94d9 4892 } else if (!tp_features.light_status) {
887965e6
AD		 4893 seq_printf(m, "status:\t\tunknown\n");
4894 seq_printf(m, "commands:\ton, off\n");
78f81cc4 4895 } else {
4fa6811b
HMH		 4896 status = light_get_status();
4897 if (status < 0)
4898 return status;
887965e6
AD		 4899 seq_printf(m, "status:\t\t%s\n", onoff(status, 0));
4900 seq_printf(m, "commands:\ton, off\n");
78f81cc4 4901 }
1da177e4 4902
887965e6 4903 return 0;
1da177e4
LT		 4904}
4905
78f81cc4 4906static int light_write(char *buf)
1da177e4 4907{
1da177e4 4908 char *cmd;
4fa6811b 4909 int newstatus = 0;
78f81cc4 4910
d8fd94d9 4911 if (!tp_features.light)
78f81cc4
BD		 4912 return -ENODEV;
4913
1da177e4
LT		 4914 while ((cmd = next_cmd(&buf))) {
4915 if (strlencmp(cmd, "on") == 0) {
4fa6811b 4916 newstatus = 1;
1da177e4 4917 } else if (strlencmp(cmd, "off") == 0) {
4fa6811b 4918 newstatus = 0;
1da177e4
LT		 4919 } else
4920 return -EINVAL;
1da177e4
LT		 4921 }
4922
4fa6811b 4923 return light_set_status(newstatus);
1da177e4
LT		 4924}
4925
a5763f22
HMH		 4926static struct ibm_struct light_driver_data = {
4927 .name = "light",
4928 .read = light_read,
4929 .write = light_write,
e306501d 4930 .exit = light_exit,
a5763f22
HMH		 4931};
4932
56b6aeb0
HMH		 4933/*************************************************************************
4934 * CMOS subdriver
4935 */
4936
b616004c
HMH		 4937/* sysfs cmos_command -------------------------------------------------- */
4938static ssize_t cmos_command_store(struct device *dev,
4939 struct device_attribute *attr,
4940 const char *buf, size_t count)
4941{
4942 unsigned long cmos_cmd;
4943 int res;
4944
4945 if (parse_strtoul(buf, 21, &cmos_cmd))
4946 return -EINVAL;
4947
4948 res = issue_thinkpad_cmos_command(cmos_cmd);
4949 return (res)? res : count;
4950}
4951
4952static struct device_attribute dev_attr_cmos_command =
4953 __ATTR(cmos_command, S_IWUSR, NULL, cmos_command_store);
4954
4955/* --------------------------------------------------------------------- */
4956
a5763f22 4957static int __init cmos_init(struct ibm_init_struct *iibm)
5fba344c 4958{
b616004c
HMH		 4959 int res;
4960
fe08bc4b
HMH		 4961 vdbg_printk(TPACPI_DBG_INIT,
4962 "initializing cmos commands subdriver\n");
4963
e0c7dfe7 4964 TPACPI_ACPIHANDLE_INIT(cmos);
5fba344c 4965
fe08bc4b
HMH		 4966 vdbg_printk(TPACPI_DBG_INIT, "cmos commands are %s\n",
4967 str_supported(cmos_handle != NULL));
b616004c
HMH		 4968
4969 res = device_create_file(&tpacpi_pdev->dev, &dev_attr_cmos_command);
4970 if (res)
4971 return res;
4972
5fba344c
HMH		 4973 return (cmos_handle)? 0 : 1;
4974}
4975
b616004c
HMH		 4976static void cmos_exit(void)
4977{
4978 device_remove_file(&tpacpi_pdev->dev, &dev_attr_cmos_command);
4979}
4980
887965e6 4981static int cmos_read(struct seq_file *m)
1da177e4 4982{
78f81cc4
BD		 4983 /* cmos not supported on 570, 600e/x, 770e, 770x, A21e, A2xm/p,
4984 R30, R31, T20-22, X20-21 */
1da177e4 4985 if (!cmos_handle)
887965e6 4986 seq_printf(m, "status:\t\tnot supported\n");
1da177e4 4987 else {
887965e6
AD		 4988 seq_printf(m, "status:\t\tsupported\n");
4989 seq_printf(m, "commands:\t<cmd> (<cmd> is 0-21)\n");
1da177e4
LT		 4990 }
4991
887965e6 4992 return 0;
1da177e4
LT		 4993}
4994
78f81cc4 4995static int cmos_write(char *buf)
1da177e4
LT		 4996{
4997 char *cmd;
c9bea99c 4998 int cmos_cmd, res;
1da177e4
LT		 4999
5000 while ((cmd = next_cmd(&buf))) {
78f81cc4
BD		 5001 if (sscanf(cmd, "%u", &cmos_cmd) == 1 &&
5002 cmos_cmd >= 0 && cmos_cmd <= 21) {
1da177e4
LT		 5003 /* cmos_cmd set */
5004 } else
5005 return -EINVAL;
5006
c9bea99c
HMH		 5007 res = issue_thinkpad_cmos_command(cmos_cmd);
5008 if (res)
5009 return res;
1da177e4
LT		 5010 }
5011
5012 return 0;
78f81cc4
BD		 5013}
5014
a5763f22
HMH		 5015static struct ibm_struct cmos_driver_data = {
5016 .name = "cmos",
5017 .read = cmos_read,
5018 .write = cmos_write,
b616004c 5019 .exit = cmos_exit,
a5763f22 5020};
56b6aeb0
HMH		 5021
5022/*************************************************************************
5023 * LED subdriver
5024 */
5025
f74a27d4
HMH		 5026enum led_access_mode {
5027 TPACPI_LED_NONE = 0,
5028 TPACPI_LED_570, /* 570 */
5029 TPACPI_LED_OLD, /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20-21 */
5030 TPACPI_LED_NEW, /* all others */
5031};
5032
5033enum { /* For TPACPI_LED_OLD */
5034 TPACPI_LED_EC_HLCL = 0x0c, /* EC reg to get led to power on */
5035 TPACPI_LED_EC_HLBL = 0x0d, /* EC reg to blink a lit led */
5036 TPACPI_LED_EC_HLMS = 0x0e, /* EC reg to select led to command */
5037};
5038
9a8e1738 5039static enum led_access_mode led_supported;
78f81cc4 5040
2cbb5c8f 5041static acpi_handle led_handle;
56b6aeb0 5042
f21179a4 5043#define TPACPI_LED_NUMLEDS 16
af116101
HMH		 5044static struct tpacpi_led_classdev *tpacpi_leds;
5045static enum led_status_t tpacpi_led_state_cache[TPACPI_LED_NUMLEDS];
e3aa51fe 5046static const char * const tpacpi_led_names[TPACPI_LED_NUMLEDS] = {
af116101
HMH		 5047 /* there's a limit of 19 chars + NULL before 2.6.26 */
5048 "tpacpi::power",
5049 "tpacpi:orange:batt",
5050 "tpacpi:green:batt",
5051 "tpacpi::dock_active",
5052 "tpacpi::bay_active",
5053 "tpacpi::dock_batt",
5054 "tpacpi::unknown_led",
5055 "tpacpi::standby",
f21179a4
HMH		 5056 "tpacpi::dock_status1",
5057 "tpacpi::dock_status2",
5058 "tpacpi::unknown_led2",
5059 "tpacpi::unknown_led3",
5060 "tpacpi::thinkvantage",
af116101 5061};
f21179a4 5062#define TPACPI_SAFE_LEDS 0x1081U
a4d5effc
HMH		 5063
5064static inline bool tpacpi_is_led_restricted(const unsigned int led)
5065{
5066#ifdef CONFIG_THINKPAD_ACPI_UNSAFE_LEDS
5067 return false;
5068#else
f21179a4 5069 return (1U & (TPACPI_SAFE_LEDS >> led)) == 0;
a4d5effc
HMH		 5070#endif
5071}
af116101 5072
24e45bbe 5073static int led_get_status(const unsigned int led)
4fa6811b
HMH		 5074{
5075 int status;
af116101 5076 enum led_status_t led_s;
4fa6811b
HMH		 5077
5078 switch (led_supported) {
5079 case TPACPI_LED_570:
5080 if (!acpi_evalf(ec_handle,
5081 &status, "GLED", "dd", 1 << led))
5082 return -EIO;
af116101 5083 led_s = (status == 0)?
4fa6811b
HMH		 5084 TPACPI_LED_OFF :
5085 ((status == 1)?
5086 TPACPI_LED_ON :
5087 TPACPI_LED_BLINK);
af116101
HMH		 5088 tpacpi_led_state_cache[led] = led_s;
5089 return led_s;
4fa6811b
HMH		 5090 default:
5091 return -ENXIO;
5092 }
5093
5094 /* not reached */
5095}
5096
24e45bbe
HMH		 5097static int led_set_status(const unsigned int led,
5098 const enum led_status_t ledstatus)
4fa6811b
HMH		 5099{
5100 /* off, on, blink. Index is led_status_t */
24e45bbe
HMH		 5101 static const unsigned int led_sled_arg1[] = { 0, 1, 3 };
5102 static const unsigned int led_led_arg1[] = { 0, 0x80, 0xc0 };
4fa6811b
HMH		 5103
5104 int rc = 0;
5105
5106 switch (led_supported) {
5107 case TPACPI_LED_570:
24e45bbe 5108 /* 570 */
a4d5effc 5109 if (unlikely(led > 7))
24e45bbe 5110 return -EINVAL;
a4d5effc
HMH		 5111 if (unlikely(tpacpi_is_led_restricted(led)))
5112 return -EPERM;
24e45bbe
HMH		 5113 if (!acpi_evalf(led_handle, NULL, NULL, "vdd",
5114 (1 << led), led_sled_arg1[ledstatus]))
5115 rc = -EIO;
5116 break;
4fa6811b 5117 case TPACPI_LED_OLD:
24e45bbe 5118 /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20 */
a4d5effc 5119 if (unlikely(led > 7))
24e45bbe 5120 return -EINVAL;
a4d5effc
HMH		 5121 if (unlikely(tpacpi_is_led_restricted(led)))
5122 return -EPERM;
24e45bbe
HMH		 5123 rc = ec_write(TPACPI_LED_EC_HLMS, (1 << led));
5124 if (rc >= 0)
5125 rc = ec_write(TPACPI_LED_EC_HLBL,
5126 (ledstatus == TPACPI_LED_BLINK) << led);
5127 if (rc >= 0)
5128 rc = ec_write(TPACPI_LED_EC_HLCL,
5129 (ledstatus != TPACPI_LED_OFF) << led);
5130 break;
4fa6811b 5131 case TPACPI_LED_NEW:
24e45bbe 5132 /* all others */
a4d5effc
HMH		 5133 if (unlikely(led >= TPACPI_LED_NUMLEDS))
5134 return -EINVAL;
5135 if (unlikely(tpacpi_is_led_restricted(led)))
5136 return -EPERM;
24e45bbe
HMH		 5137 if (!acpi_evalf(led_handle, NULL, NULL, "vdd",
5138 led, led_led_arg1[ledstatus]))
5139 rc = -EIO;
5140 break;
4fa6811b
HMH		 5141 default:
5142 rc = -ENXIO;
5143 }
5144
af116101
HMH		 5145 if (!rc)
5146 tpacpi_led_state_cache[led] = ledstatus;
5147
5148 return rc;
5149}
5150
af116101
HMH		 5151static void led_set_status_worker(struct work_struct *work)
5152{
5153 struct tpacpi_led_classdev *data =
5154 container_of(work, struct tpacpi_led_classdev, work);
5155
5156 if (likely(tpacpi_lifecycle == TPACPI_LIFE_RUNNING))
75bd3bf2 5157 led_set_status(data->led, data->new_state);
af116101
HMH		 5158}
5159
5160static void led_sysfs_set(struct led_classdev *led_cdev,
5161 enum led_brightness brightness)
5162{
5163 struct tpacpi_led_classdev *data = container_of(led_cdev,
5164 struct tpacpi_led_classdev, led_classdev);
5165
75bd3bf2
HMH		 5166 if (brightness == LED_OFF)
5167 data->new_state = TPACPI_LED_OFF;
5168 else if (tpacpi_led_state_cache[data->led] != TPACPI_LED_BLINK)
5169 data->new_state = TPACPI_LED_ON;
5170 else
5171 data->new_state = TPACPI_LED_BLINK;
5172
e0e3c061 5173 queue_work(tpacpi_wq, &data->work);
af116101
HMH		 5174}
5175
5176static int led_sysfs_blink_set(struct led_classdev *led_cdev,
5177 unsigned long *delay_on, unsigned long *delay_off)
5178{
5179 struct tpacpi_led_classdev *data = container_of(led_cdev,
5180 struct tpacpi_led_classdev, led_classdev);
5181
5182 /* Can we choose the flash rate? */
5183 if (*delay_on == 0 && *delay_off == 0) {
5184 /* yes. set them to the hardware blink rate (1 Hz) */
5185 *delay_on = 500; /* ms */
5186 *delay_off = 500; /* ms */
5187 } else if ((*delay_on != 500) || (*delay_off != 500))
5188 return -EINVAL;
5189
75bd3bf2 5190 data->new_state = TPACPI_LED_BLINK;
e0e3c061 5191 queue_work(tpacpi_wq, &data->work);
af116101
HMH		 5192
5193 return 0;
5194}
5195
5196static enum led_brightness led_sysfs_get(struct led_classdev *led_cdev)
5197{
5198 int rc;
5199
5200 struct tpacpi_led_classdev *data = container_of(led_cdev,
5201 struct tpacpi_led_classdev, led_classdev);
5202
5203 rc = led_get_status(data->led);
5204
5205 if (rc == TPACPI_LED_OFF || rc < 0)
5206 rc = LED_OFF; /* no error handling in led class :( */
5207 else
5208 rc = LED_FULL;
5209
4fa6811b
HMH		 5210 return rc;
5211}
5212
af116101
HMH		 5213static void led_exit(void)
5214{
5215 unsigned int i;
5216
5217 for (i = 0; i < TPACPI_LED_NUMLEDS; i++) {
5218 if (tpacpi_leds[i].led_classdev.name)
5219 led_classdev_unregister(&tpacpi_leds[i].led_classdev);
5220 }
5221
5222 kfree(tpacpi_leds);
af116101
HMH		 5223}
5224
a4d5effc
HMH		 5225static int __init tpacpi_init_led(unsigned int led)
5226{
5227 int rc;
5228
5229 tpacpi_leds[led].led = led;
5230
f21179a4
HMH		 5231 /* LEDs with no name don't get registered */
5232 if (!tpacpi_led_names[led])
5233 return 0;
5234
a4d5effc
HMH		 5235 tpacpi_leds[led].led_classdev.brightness_set = &led_sysfs_set;
5236 tpacpi_leds[led].led_classdev.blink_set = &led_sysfs_blink_set;
5237 if (led_supported == TPACPI_LED_570)
5238 tpacpi_leds[led].led_classdev.brightness_get =
5239 &led_sysfs_get;
5240
5241 tpacpi_leds[led].led_classdev.name = tpacpi_led_names[led];
5242
5243 INIT_WORK(&tpacpi_leds[led].work, led_set_status_worker);
5244
5245 rc = led_classdev_register(&tpacpi_pdev->dev,
5246 &tpacpi_leds[led].led_classdev);
5247 if (rc < 0)
5248 tpacpi_leds[led].led_classdev.name = NULL;
5249
5250 return rc;
5251}
5252
f21179a4
HMH		 5253static const struct tpacpi_quirk led_useful_qtable[] __initconst = {
5254 TPACPI_Q_IBM('1', 'E', 0x009f), /* A30 */
5255 TPACPI_Q_IBM('1', 'N', 0x009f), /* A31 */
5256 TPACPI_Q_IBM('1', 'G', 0x009f), /* A31 */
5257
5258 TPACPI_Q_IBM('1', 'I', 0x0097), /* T30 */
5259 TPACPI_Q_IBM('1', 'R', 0x0097), /* T40, T41, T42, R50, R51 */
5260 TPACPI_Q_IBM('7', '0', 0x0097), /* T43, R52 */
5261 TPACPI_Q_IBM('1', 'Y', 0x0097), /* T43 */
5262 TPACPI_Q_IBM('1', 'W', 0x0097), /* R50e */
5263 TPACPI_Q_IBM('1', 'V', 0x0097), /* R51 */
5264 TPACPI_Q_IBM('7', '8', 0x0097), /* R51e */
5265 TPACPI_Q_IBM('7', '6', 0x0097), /* R52 */
5266
5267 TPACPI_Q_IBM('1', 'K', 0x00bf), /* X30 */
5268 TPACPI_Q_IBM('1', 'Q', 0x00bf), /* X31, X32 */
5269 TPACPI_Q_IBM('1', 'U', 0x00bf), /* X40 */
5270 TPACPI_Q_IBM('7', '4', 0x00bf), /* X41 */
5271 TPACPI_Q_IBM('7', '5', 0x00bf), /* X41t */
5272
5273 TPACPI_Q_IBM('7', '9', 0x1f97), /* T60 (1) */
5274 TPACPI_Q_IBM('7', '7', 0x1f97), /* Z60* (1) */
5275 TPACPI_Q_IBM('7', 'F', 0x1f97), /* Z61* (1) */
5276 TPACPI_Q_IBM('7', 'B', 0x1fb7), /* X60 (1) */
5277
5278 /* (1) - may have excess leds enabled on MSB */
5279
5280 /* Defaults (order matters, keep last, don't reorder!) */
5281 { /* Lenovo */
5282 .vendor = PCI_VENDOR_ID_LENOVO,
5283 .bios = TPACPI_MATCH_ANY, .ec = TPACPI_MATCH_ANY,
5284 .quirks = 0x1fffU,
5285 },
5286 { /* IBM ThinkPads with no EC version string */
5287 .vendor = PCI_VENDOR_ID_IBM,
5288 .bios = TPACPI_MATCH_ANY, .ec = TPACPI_MATCH_UNKNOWN,
5289 .quirks = 0x00ffU,
5290 },
5291 { /* IBM ThinkPads with EC version string */
5292 .vendor = PCI_VENDOR_ID_IBM,
5293 .bios = TPACPI_MATCH_ANY, .ec = TPACPI_MATCH_ANY,
5294 .quirks = 0x00bfU,
5295 },
5296};
5297
5298#undef TPACPI_LEDQ_IBM
5299#undef TPACPI_LEDQ_LNV
5300
2cbb5c8f
HMH		 5301static enum led_access_mode __init led_init_detect_mode(void)
5302{
5303 acpi_status status;
5304
5305 if (tpacpi_is_ibm()) {
5306 /* 570 */
5307 status = acpi_get_handle(ec_handle, "SLED", &led_handle);
5308 if (ACPI_SUCCESS(status))
5309 return TPACPI_LED_570;
5310
5311 /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20-21 */
5312 status = acpi_get_handle(ec_handle, "SYSL", &led_handle);
5313 if (ACPI_SUCCESS(status))
5314 return TPACPI_LED_OLD;
5315 }
5316
5317 /* most others */
5318 status = acpi_get_handle(ec_handle, "LED", &led_handle);
5319 if (ACPI_SUCCESS(status))
5320 return TPACPI_LED_NEW;
5321
5322 /* R30, R31, and unknown firmwares */
5323 led_handle = NULL;
5324 return TPACPI_LED_NONE;
5325}
5326
a5763f22 5327static int __init led_init(struct ibm_init_struct *iibm)
78f81cc4 5328{
af116101
HMH		 5329 unsigned int i;
5330 int rc;
f21179a4 5331 unsigned long useful_leds;
af116101 5332
fe08bc4b
HMH		 5333 vdbg_printk(TPACPI_DBG_INIT, "initializing LED subdriver\n");
5334
2cbb5c8f 5335 led_supported = led_init_detect_mode();
78f81cc4 5336
fe08bc4b
HMH		 5337 vdbg_printk(TPACPI_DBG_INIT, "LED commands are %s, mode %d\n",
5338 str_supported(led_supported), led_supported);
5339
f21179a4
HMH		 5340 if (led_supported == TPACPI_LED_NONE)
5341 return 1;
5342
af116101
HMH		 5343 tpacpi_leds = kzalloc(sizeof(*tpacpi_leds) * TPACPI_LED_NUMLEDS,
5344 GFP_KERNEL);
5345 if (!tpacpi_leds) {
0978e012 5346 pr_err("Out of memory for LED data\n");
af116101
HMH		 5347 return -ENOMEM;
5348 }
5349
f21179a4
HMH		 5350 useful_leds = tpacpi_check_quirks(led_useful_qtable,
5351 ARRAY_SIZE(led_useful_qtable));
5352
af116101 5353 for (i = 0; i < TPACPI_LED_NUMLEDS; i++) {
f21179a4
HMH		 5354 if (!tpacpi_is_led_restricted(i) &&
5355 test_bit(i, &useful_leds)) {
a4d5effc
HMH		 5356 rc = tpacpi_init_led(i);
5357 if (rc < 0) {
5358 led_exit();
5359 return rc;
5360 }
af116101
HMH		 5361 }
5362 }
5363
a4d5effc 5364#ifdef CONFIG_THINKPAD_ACPI_UNSAFE_LEDS
0978e012
JP		 5365 pr_notice("warning: userspace override of important "
5366 "firmware LEDs is enabled\n");
a4d5effc 5367#endif
f21179a4 5368 return 0;
78f81cc4
BD		 5369}
5370
4fa6811b
HMH		 5371#define str_led_status(s) \
5372 ((s) == TPACPI_LED_OFF ? "off" : \
5373 ((s) == TPACPI_LED_ON ? "on" : "blinking"))
78f81cc4 5374
887965e6 5375static int led_read(struct seq_file *m)
1da177e4 5376{
78f81cc4 5377 if (!led_supported) {
887965e6
AD		 5378 seq_printf(m, "status:\t\tnot supported\n");
5379 return 0;
78f81cc4 5380 }
887965e6 5381 seq_printf(m, "status:\t\tsupported\n");
78f81cc4 5382
efa27145 5383 if (led_supported == TPACPI_LED_570) {
78f81cc4
BD		 5384 /* 570 */
5385 int i, status;
5386 for (i = 0; i < 8; i++) {
4fa6811b
HMH		 5387 status = led_get_status(i);
5388 if (status < 0)
78f81cc4 5389 return -EIO;
887965e6 5390 seq_printf(m, "%d:\t\t%s\n",
4fa6811b 5391 i, str_led_status(status));
78f81cc4
BD		 5392 }
5393 }
5394
887965e6 5395 seq_printf(m, "commands:\t"
f21179a4 5396 "<led> on, <led> off, <led> blink (<led> is 0-15)\n");
1da177e4 5397
887965e6 5398 return 0;
1da177e4
LT		 5399}
5400
78f81cc4 5401static int led_write(char *buf)
1da177e4
LT		 5402{
5403 char *cmd;
4fa6811b
HMH		 5404 int led, rc;
5405 enum led_status_t s;
78f81cc4
BD		 5406
5407 if (!led_supported)
5408 return -ENODEV;
1da177e4
LT		 5409
5410 while ((cmd = next_cmd(&buf))) {
f21179a4 5411 if (sscanf(cmd, "%d", &led) != 1 || led < 0 || led > 15)
1da177e4
LT		 5412 return -EINVAL;
5413
78f81cc4 5414 if (strstr(cmd, "off")) {
4fa6811b 5415 s = TPACPI_LED_OFF;
1da177e4 5416 } else if (strstr(cmd, "on")) {
4fa6811b 5417 s = TPACPI_LED_ON;
78f81cc4 5418 } else if (strstr(cmd, "blink")) {
4fa6811b 5419 s = TPACPI_LED_BLINK;
78f81cc4 5420 } else {
4fa6811b 5421 return -EINVAL;
78f81cc4 5422 }
4fa6811b
HMH		 5423
5424 rc = led_set_status(led, s);
5425 if (rc < 0)
5426 return rc;
78f81cc4
BD		 5427 }
5428
5429 return 0;
5430}
5431
a5763f22
HMH		 5432static struct ibm_struct led_driver_data = {
5433 .name = "led",
5434 .read = led_read,
5435 .write = led_write,
af116101 5436 .exit = led_exit,
a5763f22
HMH		 5437};
5438
56b6aeb0
HMH		 5439/*************************************************************************
5440 * Beep subdriver
5441 */
5442
e0c7dfe7 5443TPACPI_HANDLE(beep, ec, "BEEP"); /* all except R30, R31 */
56b6aeb0 5444
60201732
HMH		 5445#define TPACPI_BEEP_Q1 0x0001
5446
5447static const struct tpacpi_quirk beep_quirk_table[] __initconst = {
5448 TPACPI_Q_IBM('I', 'M', TPACPI_BEEP_Q1), /* 570 */
5449 TPACPI_Q_IBM('I', 'U', TPACPI_BEEP_Q1), /* 570E - unverified */
5450};
5451
a5763f22 5452static int __init beep_init(struct ibm_init_struct *iibm)
5fba344c 5453{
60201732
HMH		 5454 unsigned long quirks;
5455
fe08bc4b
HMH		 5456 vdbg_printk(TPACPI_DBG_INIT, "initializing beep subdriver\n");
5457
e0c7dfe7 5458 TPACPI_ACPIHANDLE_INIT(beep);
5fba344c 5459
fe08bc4b
HMH		 5460 vdbg_printk(TPACPI_DBG_INIT, "beep is %s\n",
5461 str_supported(beep_handle != NULL));
5462
60201732
HMH		 5463 quirks = tpacpi_check_quirks(beep_quirk_table,
5464 ARRAY_SIZE(beep_quirk_table));
5465
5466 tp_features.beep_needs_two_args = !!(quirks & TPACPI_BEEP_Q1);
5467
5fba344c
HMH		 5468 return (beep_handle)? 0 : 1;
5469}
5470
887965e6 5471static int beep_read(struct seq_file *m)
78f81cc4 5472{
78f81cc4 5473 if (!beep_handle)
887965e6 5474 seq_printf(m, "status:\t\tnot supported\n");
78f81cc4 5475 else {
887965e6
AD		 5476 seq_printf(m, "status:\t\tsupported\n");
5477 seq_printf(m, "commands:\t<cmd> (<cmd> is 0-17)\n");
78f81cc4
BD		 5478 }
5479
887965e6 5480 return 0;
78f81cc4
BD		 5481}
5482
5483static int beep_write(char *buf)
5484{
5485 char *cmd;
5486 int beep_cmd;
5487
5488 if (!beep_handle)
5489 return -ENODEV;
5490
5491 while ((cmd = next_cmd(&buf))) {
5492 if (sscanf(cmd, "%u", &beep_cmd) == 1 &&
5493 beep_cmd >= 0 && beep_cmd <= 17) {
5494 /* beep_cmd set */
5495 } else
5496 return -EINVAL;
60201732
HMH		 5497 if (tp_features.beep_needs_two_args) {
5498 if (!acpi_evalf(beep_handle, NULL, NULL, "vdd",
5499 beep_cmd, 0))
5500 return -EIO;
5501 } else {
5502 if (!acpi_evalf(beep_handle, NULL, NULL, "vd",
5503 beep_cmd))
5504 return -EIO;
5505 }
78f81cc4
BD		 5506 }
5507
5508 return 0;
5509}
5510
a5763f22
HMH		 5511static struct ibm_struct beep_driver_data = {
5512 .name = "beep",
5513 .read = beep_read,
5514 .write = beep_write,
5515};
5516
56b6aeb0
HMH		 5517/*************************************************************************
5518 * Thermal subdriver
5519 */
78f81cc4 5520
f74a27d4
HMH		 5521enum thermal_access_mode {
5522 TPACPI_THERMAL_NONE = 0, /* No thermal support */
5523 TPACPI_THERMAL_ACPI_TMP07, /* Use ACPI TMP0-7 */
5524 TPACPI_THERMAL_ACPI_UPDT, /* Use ACPI TMP0-7 with UPDT */
5525 TPACPI_THERMAL_TPEC_8, /* Use ACPI EC regs, 8 sensors */
5526 TPACPI_THERMAL_TPEC_16, /* Use ACPI EC regs, 16 sensors */
5527};
5528
5529enum { /* TPACPI_THERMAL_TPEC_* */
5530 TP_EC_THERMAL_TMP0 = 0x78, /* ACPI EC regs TMP 0..7 */
5531 TP_EC_THERMAL_TMP8 = 0xC0, /* ACPI EC regs TMP 8..15 */
5532 TP_EC_THERMAL_TMP_NA = -128, /* ACPI EC sensor not available */
9ebd9e83
HMH		 5533
5534 TPACPI_THERMAL_SENSOR_NA = -128000, /* Sensor not available */
f74a27d4
HMH		 5535};
5536
9ebd9e83 5537
f74a27d4
HMH		 5538#define TPACPI_MAX_THERMAL_SENSORS 16 /* Max thermal sensors supported */
5539struct ibm_thermal_sensors_struct {
5540 s32 temp[TPACPI_MAX_THERMAL_SENSORS];
5541};
5542
a26f878a 5543static enum thermal_access_mode thermal_read_mode;
78f81cc4 5544
b21a15f6
HMH		 5545/* idx is zero-based */
5546static int thermal_get_sensor(int idx, s32 *value)
5547{
5548 int t;
5549 s8 tmp;
5550 char tmpi[5];
5551
5552 t = TP_EC_THERMAL_TMP0;
5553
5554 switch (thermal_read_mode) {
5555#if TPACPI_MAX_THERMAL_SENSORS >= 16
5556 case TPACPI_THERMAL_TPEC_16:
5557 if (idx >= 8 && idx <= 15) {
5558 t = TP_EC_THERMAL_TMP8;
5559 idx -= 8;
5560 }
5561 /* fallthrough */
5562#endif
5563 case TPACPI_THERMAL_TPEC_8:
5564 if (idx <= 7) {
5565 if (!acpi_ec_read(t + idx, &tmp))
5566 return -EIO;
5567 *value = tmp * 1000;
5568 return 0;
5569 }
5570 break;
5571
5572 case TPACPI_THERMAL_ACPI_UPDT:
5573 if (idx <= 7) {
5574 snprintf(tmpi, sizeof(tmpi), "TMP%c", '0' + idx);
5575 if (!acpi_evalf(ec_handle, NULL, "UPDT", "v"))
5576 return -EIO;
5577 if (!acpi_evalf(ec_handle, &t, tmpi, "d"))
5578 return -EIO;
5579 *value = (t - 2732) * 100;
5580 return 0;
5581 }
5582 break;
5583
5584 case TPACPI_THERMAL_ACPI_TMP07:
5585 if (idx <= 7) {
5586 snprintf(tmpi, sizeof(tmpi), "TMP%c", '0' + idx);
5587 if (!acpi_evalf(ec_handle, &t, tmpi, "d"))
5588 return -EIO;
5589 if (t > 127 || t < -127)
5590 t = TP_EC_THERMAL_TMP_NA;
5591 *value = t * 1000;
5592 return 0;
5593 }
5594 break;
5595
5596 case TPACPI_THERMAL_NONE:
5597 default:
5598 return -ENOSYS;
5599 }
5600
5601 return -EINVAL;
5602}
5603
5604static int thermal_get_sensors(struct ibm_thermal_sensors_struct *s)
5605{
5606 int res, i;
5607 int n;
5608
5609 n = 8;
5610 i = 0;
5611
5612 if (!s)
5613 return -EINVAL;
5614
5615 if (thermal_read_mode == TPACPI_THERMAL_TPEC_16)
5616 n = 16;
5617
35ff8b9f 5618 for (i = 0 ; i < n; i++) {
b21a15f6
HMH		 5619 res = thermal_get_sensor(i, &s->temp[i]);
5620 if (res)
5621 return res;
5622 }
5623
5624 return n;
5625}
f74a27d4 5626
9ebd9e83
HMH		 5627static void thermal_dump_all_sensors(void)
5628{
5629 int n, i;
5630 struct ibm_thermal_sensors_struct t;
5631
5632 n = thermal_get_sensors(&t);
5633 if (n <= 0)
5634 return;
5635
0978e012 5636 pr_notice("temperatures (Celsius):");
9ebd9e83
HMH		 5637
5638 for (i = 0; i < n; i++) {
5639 if (t.temp[i] != TPACPI_THERMAL_SENSOR_NA)
0978e012 5640 pr_cont(" %d", (int)(t.temp[i] / 1000));
9ebd9e83 5641 else
0978e012 5642 pr_cont(" N/A");
9ebd9e83
HMH		 5643 }
5644
0978e012 5645 pr_cont("\n");
9ebd9e83
HMH		 5646}
5647
2c37aa4e
HMH		 5648/* sysfs temp##_input -------------------------------------------------- */
5649
5650static ssize_t thermal_temp_input_show(struct device *dev,
5651 struct device_attribute *attr,
5652 char *buf)
5653{
5654 struct sensor_device_attribute *sensor_attr =
5655 to_sensor_dev_attr(attr);
5656 int idx = sensor_attr->index;
5657 s32 value;
5658 int res;
5659
5660 res = thermal_get_sensor(idx, &value);
5661 if (res)
5662 return res;
9ebd9e83 5663 if (value == TPACPI_THERMAL_SENSOR_NA)
2c37aa4e
HMH		 5664 return -ENXIO;
5665
5666 return snprintf(buf, PAGE_SIZE, "%d\n", value);
5667}
5668
5669#define THERMAL_SENSOR_ATTR_TEMP(_idxA, _idxB) \
35ff8b9f
HMH		 5670 SENSOR_ATTR(temp##_idxA##_input, S_IRUGO, \
5671 thermal_temp_input_show, NULL, _idxB)
2c37aa4e
HMH		 5672
5673static struct sensor_device_attribute sensor_dev_attr_thermal_temp_input[] = {
5674 THERMAL_SENSOR_ATTR_TEMP(1, 0),
5675 THERMAL_SENSOR_ATTR_TEMP(2, 1),
5676 THERMAL_SENSOR_ATTR_TEMP(3, 2),
5677 THERMAL_SENSOR_ATTR_TEMP(4, 3),
5678 THERMAL_SENSOR_ATTR_TEMP(5, 4),
5679 THERMAL_SENSOR_ATTR_TEMP(6, 5),
5680 THERMAL_SENSOR_ATTR_TEMP(7, 6),
5681 THERMAL_SENSOR_ATTR_TEMP(8, 7),
5682 THERMAL_SENSOR_ATTR_TEMP(9, 8),
5683 THERMAL_SENSOR_ATTR_TEMP(10, 9),
5684 THERMAL_SENSOR_ATTR_TEMP(11, 10),
5685 THERMAL_SENSOR_ATTR_TEMP(12, 11),
5686 THERMAL_SENSOR_ATTR_TEMP(13, 12),
5687 THERMAL_SENSOR_ATTR_TEMP(14, 13),
5688 THERMAL_SENSOR_ATTR_TEMP(15, 14),
5689 THERMAL_SENSOR_ATTR_TEMP(16, 15),
5690};
5691
5692#define THERMAL_ATTRS(X) \
5693 &sensor_dev_attr_thermal_temp_input[X].dev_attr.attr
5694
5695static struct attribute *thermal_temp_input_attr[] = {
5696 THERMAL_ATTRS(8),
5697 THERMAL_ATTRS(9),
5698 THERMAL_ATTRS(10),
5699 THERMAL_ATTRS(11),
5700 THERMAL_ATTRS(12),
5701 THERMAL_ATTRS(13),
5702 THERMAL_ATTRS(14),
5703 THERMAL_ATTRS(15),
5704 THERMAL_ATTRS(0),
5705 THERMAL_ATTRS(1),
5706 THERMAL_ATTRS(2),
5707 THERMAL_ATTRS(3),
5708 THERMAL_ATTRS(4),
5709 THERMAL_ATTRS(5),
5710 THERMAL_ATTRS(6),
5711 THERMAL_ATTRS(7),
5712 NULL
5713};
5714
5715static const struct attribute_group thermal_temp_input16_group = {
5716 .attrs = thermal_temp_input_attr
5717};
5718
5719static const struct attribute_group thermal_temp_input8_group = {
5720 .attrs = &thermal_temp_input_attr[8]
5721};
5722
5723#undef THERMAL_SENSOR_ATTR_TEMP
5724#undef THERMAL_ATTRS
5725
5726/* --------------------------------------------------------------------- */
5727
a5763f22 5728static int __init thermal_init(struct ibm_init_struct *iibm)
78f81cc4 5729{
60eb0b35
HMH		 5730 u8 t, ta1, ta2;
5731 int i;
5fba344c 5732 int acpi_tmp7;
2c37aa4e 5733 int res;
5fba344c 5734
fe08bc4b
HMH		 5735 vdbg_printk(TPACPI_DBG_INIT, "initializing thermal subdriver\n");
5736
5fba344c 5737 acpi_tmp7 = acpi_evalf(ec_handle, NULL, "TMP7", "qv");
60eb0b35 5738
3d6f99ca 5739 if (thinkpad_id.ec_model) {
60eb0b35
HMH		 5740 /*
5741 * Direct EC access mode: sensors at registers
5742 * 0x78-0x7F, 0xC0-0xC7. Registers return 0x00 for
5743 * non-implemented, thermal sensors return 0x80 when
5744 * not available
5745 */
78f81cc4 5746
60eb0b35
HMH		 5747 ta1 = ta2 = 0;
5748 for (i = 0; i < 8; i++) {
04cc862c 5749 if (acpi_ec_read(TP_EC_THERMAL_TMP0 + i, &t)) {
60eb0b35
HMH		 5750 ta1 |= t;
5751 } else {
5752 ta1 = 0;
5753 break;
5754 }
04cc862c 5755 if (acpi_ec_read(TP_EC_THERMAL_TMP8 + i, &t)) {
60eb0b35
HMH		 5756 ta2 |= t;
5757 } else {
5758 ta1 = 0;
5759 break;
5760 }
5761 }
5762 if (ta1 == 0) {
5763 /* This is sheer paranoia, but we handle it anyway */
5764 if (acpi_tmp7) {
0978e012 5765 pr_err("ThinkPad ACPI EC access misbehaving, "
35ff8b9f
HMH		 5766 "falling back to ACPI TMPx access "
5767 "mode\n");
efa27145 5768 thermal_read_mode = TPACPI_THERMAL_ACPI_TMP07;
60eb0b35 5769 } else {
0978e012 5770 pr_err("ThinkPad ACPI EC access misbehaving, "
60eb0b35 5771 "disabling thermal sensors access\n");
efa27145 5772 thermal_read_mode = TPACPI_THERMAL_NONE;
60eb0b35
HMH		 5773 }
5774 } else {
5775 thermal_read_mode =
5776 (ta2 != 0) ?
efa27145 5777 TPACPI_THERMAL_TPEC_16 : TPACPI_THERMAL_TPEC_8;
60eb0b35
HMH		 5778 }
5779 } else if (acpi_tmp7) {
e28393c0
HMH		 5780 if (tpacpi_is_ibm() &&
5781 acpi_evalf(ec_handle, NULL, "UPDT", "qv")) {
a26f878a 5782 /* 600e/x, 770e, 770x */
efa27145 5783 thermal_read_mode = TPACPI_THERMAL_ACPI_UPDT;
a26f878a 5784 } else {
e28393c0 5785 /* IBM/LENOVO DSDT EC.TMPx access, max 8 sensors */
efa27145 5786 thermal_read_mode = TPACPI_THERMAL_ACPI_TMP07;
a26f878a
HMH		 5787 }
5788 } else {
5789 /* temperatures not supported on 570, G4x, R30, R31, R32 */
efa27145 5790 thermal_read_mode = TPACPI_THERMAL_NONE;
a26f878a 5791 }
78f81cc4 5792
fe08bc4b
HMH		 5793 vdbg_printk(TPACPI_DBG_INIT, "thermal is %s, mode %d\n",
5794 str_supported(thermal_read_mode != TPACPI_THERMAL_NONE),
5795 thermal_read_mode);
5796
35ff8b9f 5797 switch (thermal_read_mode) {
2c37aa4e 5798 case TPACPI_THERMAL_TPEC_16:
7fd40029 5799 res = sysfs_create_group(&tpacpi_sensors_pdev->dev.kobj,
2c37aa4e
HMH		 5800 &thermal_temp_input16_group);
5801 if (res)
5802 return res;
5803 break;
5804 case TPACPI_THERMAL_TPEC_8:
5805 case TPACPI_THERMAL_ACPI_TMP07:
5806 case TPACPI_THERMAL_ACPI_UPDT:
7fd40029 5807 res = sysfs_create_group(&tpacpi_sensors_pdev->dev.kobj,
2c37aa4e
HMH		 5808 &thermal_temp_input8_group);
5809 if (res)
5810 return res;
5811 break;
5812 case TPACPI_THERMAL_NONE:
5813 default:
5814 return 1;
5815 }
5816
5817 return 0;
5818}
5819
5820static void thermal_exit(void)
5821{
35ff8b9f 5822 switch (thermal_read_mode) {
2c37aa4e 5823 case TPACPI_THERMAL_TPEC_16:
7fd40029 5824 sysfs_remove_group(&tpacpi_sensors_pdev->dev.kobj,
2c37aa4e
HMH		 5825 &thermal_temp_input16_group);
5826 break;
5827 case TPACPI_THERMAL_TPEC_8:
5828 case TPACPI_THERMAL_ACPI_TMP07:
5829 case TPACPI_THERMAL_ACPI_UPDT:
7fd40029 5830 sysfs_remove_group(&tpacpi_sensors_pdev->dev.kobj,
f04d5e01 5831 &thermal_temp_input8_group);
2c37aa4e
HMH		 5832 break;
5833 case TPACPI_THERMAL_NONE:
5834 default:
5835 break;
5836 }
78f81cc4
BD		 5837}
5838
887965e6 5839static int thermal_read(struct seq_file *m)
a26f878a 5840{
a26f878a
HMH		 5841 int n, i;
5842 struct ibm_thermal_sensors_struct t;
5843
5844 n = thermal_get_sensors(&t);
5845 if (unlikely(n < 0))
5846 return n;
5847
887965e6 5848 seq_printf(m, "temperatures:\t");
a26f878a
HMH		 5849
5850 if (n > 0) {
5851 for (i = 0; i < (n - 1); i++)
887965e6
AD		 5852 seq_printf(m, "%d ", t.temp[i] / 1000);
5853 seq_printf(m, "%d\n", t.temp[i] / 1000);
a26f878a 5854 } else
887965e6 5855 seq_printf(m, "not supported\n");
78f81cc4 5856
887965e6 5857 return 0;
78f81cc4
BD		 5858}
5859
a5763f22
HMH		 5860static struct ibm_struct thermal_driver_data = {
5861 .name = "thermal",
5862 .read = thermal_read,
2c37aa4e 5863 .exit = thermal_exit,
a5763f22
HMH		 5864};
5865
56b6aeb0
HMH		 5866/*************************************************************************
5867 * Backlight/brightness subdriver
5868 */
5869
f74a27d4
HMH		 5870#define TPACPI_BACKLIGHT_DEV_NAME "thinkpad_screen"
5871
0e501834
HMH		 5872/*
5873 * ThinkPads can read brightness from two places: EC HBRV (0x31), or
5874 * CMOS NVRAM byte 0x5E, bits 0-3.
5875 *
5876 * EC HBRV (0x31) has the following layout
5877 * Bit 7: unknown function
5878 * Bit 6: unknown function
5879 * Bit 5: Z: honour scale changes, NZ: ignore scale changes
5880 * Bit 4: must be set to zero to avoid problems
5881 * Bit 3-0: backlight brightness level
5882 *
5883 * brightness_get_raw returns status data in the HBRV layout
d7880f10
HMH		 5884 *
5885 * WARNING: The X61 has been verified to use HBRV for something else, so
5886 * this should be used _only_ on IBM ThinkPads, and maybe with some careful
5887 * testing on the very early *60 Lenovo models...
0e501834
HMH		 5888 */
5889
e11aecf1
HMH		 5890enum {
5891 TP_EC_BACKLIGHT = 0x31,
5892
5893 /* TP_EC_BACKLIGHT bitmasks */
5894 TP_EC_BACKLIGHT_LVLMSK = 0x1F,
5895 TP_EC_BACKLIGHT_CMDMSK = 0xE0,
5896 TP_EC_BACKLIGHT_MAPSW = 0x20,
5897};
5898
0e501834
HMH		 5899enum tpacpi_brightness_access_mode {
5900 TPACPI_BRGHT_MODE_AUTO = 0, /* Not implemented yet */
5901 TPACPI_BRGHT_MODE_EC, /* EC control */
5902 TPACPI_BRGHT_MODE_UCMS_STEP, /* UCMS step-based control */
5903 TPACPI_BRGHT_MODE_ECNVRAM, /* EC control w/ NVRAM store */
5904 TPACPI_BRGHT_MODE_MAX
5905};
5906
94954cc6 5907static struct backlight_device *ibm_backlight_device;
0e501834
HMH		 5908
5909static enum tpacpi_brightness_access_mode brightness_mode =
5910 TPACPI_BRGHT_MODE_MAX;
5911
f74a27d4
HMH		 5912static unsigned int brightness_enable = 2; /* 2 = auto, 0 = no, 1 = yes */
5913
b21a15f6 5914static struct mutex brightness_mutex;
56b6aeb0 5915
0e501834
HMH		 5916/* NVRAM brightness access,
5917 * call with brightness_mutex held! */
5918static unsigned int tpacpi_brightness_nvram_get(void)
b21a15f6 5919{
0e501834 5920 u8 lnvram;
b21a15f6 5921
0e501834
HMH		 5922 lnvram = (nvram_read_byte(TP_NVRAM_ADDR_BRIGHTNESS)
5923 & TP_NVRAM_MASK_LEVEL_BRIGHTNESS)
5924 >> TP_NVRAM_POS_LEVEL_BRIGHTNESS;
77775838 5925 lnvram &= bright_maxlvl;
0e501834
HMH		 5926
5927 return lnvram;
5928}
5929
5930static void tpacpi_brightness_checkpoint_nvram(void)
5931{
5932 u8 lec = 0;
5933 u8 b_nvram;
5934
5935 if (brightness_mode != TPACPI_BRGHT_MODE_ECNVRAM)
5936 return;
5937
5938 vdbg_printk(TPACPI_DBG_BRGHT,
5939 "trying to checkpoint backlight level to NVRAM...\n");
5940
5941 if (mutex_lock_killable(&brightness_mutex) < 0)
5942 return;
5943
5944 if (unlikely(!acpi_ec_read(TP_EC_BACKLIGHT, &lec)))
5945 goto unlock;
5946 lec &= TP_EC_BACKLIGHT_LVLMSK;
5947 b_nvram = nvram_read_byte(TP_NVRAM_ADDR_BRIGHTNESS);
5948
5949 if (lec != ((b_nvram & TP_NVRAM_MASK_LEVEL_BRIGHTNESS)
5950 >> TP_NVRAM_POS_LEVEL_BRIGHTNESS)) {
5951 /* NVRAM needs update */
5952 b_nvram &= ~(TP_NVRAM_MASK_LEVEL_BRIGHTNESS <<
5953 TP_NVRAM_POS_LEVEL_BRIGHTNESS);
5954 b_nvram |= lec;
5955 nvram_write_byte(b_nvram, TP_NVRAM_ADDR_BRIGHTNESS);
5956 dbg_printk(TPACPI_DBG_BRGHT,
5957 "updated NVRAM backlight level to %u (0x%02x)\n",
5958 (unsigned int) lec, (unsigned int) b_nvram);
5959 } else
5960 vdbg_printk(TPACPI_DBG_BRGHT,
5961 "NVRAM backlight level already is %u (0x%02x)\n",
5962 (unsigned int) lec, (unsigned int) b_nvram);
5963
5964unlock:
5965 mutex_unlock(&brightness_mutex);
5966}
5967
5968
5969/* call with brightness_mutex held! */
5970static int tpacpi_brightness_get_raw(int *status)
5971{
5972 u8 lec = 0;
5973
5974 switch (brightness_mode) {
5975 case TPACPI_BRGHT_MODE_UCMS_STEP:
5976 *status = tpacpi_brightness_nvram_get();
5977 return 0;
5978 case TPACPI_BRGHT_MODE_EC:
5979 case TPACPI_BRGHT_MODE_ECNVRAM:
5980 if (unlikely(!acpi_ec_read(TP_EC_BACKLIGHT, &lec)))
2d5e94d7 5981 return -EIO;
0e501834
HMH		 5982 *status = lec;
5983 return 0;
5984 default:
5985 return -ENXIO;
b21a15f6 5986 }
0e501834
HMH		 5987}
5988
5989/* call with brightness_mutex held! */
5990/* do NOT call with illegal backlight level value */
5991static int tpacpi_brightness_set_ec(unsigned int value)
5992{
5993 u8 lec = 0;
5994
5995 if (unlikely(!acpi_ec_read(TP_EC_BACKLIGHT, &lec)))
5996 return -EIO;
5997
5998 if (unlikely(!acpi_ec_write(TP_EC_BACKLIGHT,
5999 (lec & TP_EC_BACKLIGHT_CMDMSK) |
6000 (value & TP_EC_BACKLIGHT_LVLMSK))))
6001 return -EIO;
6002
6003 return 0;
6004}
6005
6006/* call with brightness_mutex held! */
6007static int tpacpi_brightness_set_ucmsstep(unsigned int value)
6008{
6009 int cmos_cmd, inc;
6010 unsigned int current_value, i;
6011
6012 current_value = tpacpi_brightness_nvram_get();
6013
6014 if (value == current_value)
6015 return 0;
6016
6017 cmos_cmd = (value > current_value) ?
6018 TP_CMOS_BRIGHTNESS_UP :
6019 TP_CMOS_BRIGHTNESS_DOWN;
6020 inc = (value > current_value) ? 1 : -1;
6021
6022 for (i = current_value; i != value; i += inc)
6023 if (issue_thinkpad_cmos_command(cmos_cmd))
6024 return -EIO;
b21a15f6 6025
e11aecf1 6026 return 0;
b21a15f6
HMH		 6027}
6028
6029/* May return EINTR which can always be mapped to ERESTARTSYS */
0e501834 6030static int brightness_set(unsigned int value)
b21a15f6 6031{
0e501834 6032 int res;
b21a15f6 6033
77775838 6034 if (value > bright_maxlvl || value < 0)
b21a15f6
HMH		 6035 return -EINVAL;
6036
0e501834
HMH		 6037 vdbg_printk(TPACPI_DBG_BRGHT,
6038 "set backlight level to %d\n", value);
6039
7646ea88 6040 res = mutex_lock_killable(&brightness_mutex);
b21a15f6
HMH		 6041 if (res < 0)
6042 return res;
6043
0e501834
HMH		 6044 switch (brightness_mode) {
6045 case TPACPI_BRGHT_MODE_EC:
6046 case TPACPI_BRGHT_MODE_ECNVRAM:
6047 res = tpacpi_brightness_set_ec(value);
6048 break;
6049 case TPACPI_BRGHT_MODE_UCMS_STEP:
6050 res = tpacpi_brightness_set_ucmsstep(value);
6051 break;
6052 default:
6053 res = -ENXIO;
b21a15f6
HMH		 6054 }
6055
b21a15f6
HMH		 6056 mutex_unlock(&brightness_mutex);
6057 return res;
6058}
6059
6060/* sysfs backlight class ----------------------------------------------- */
6061
6062static int brightness_update_status(struct backlight_device *bd)
6063{
0e501834 6064 unsigned int level =
b21a15f6
HMH		 6065 (bd->props.fb_blank == FB_BLANK_UNBLANK &&
6066 bd->props.power == FB_BLANK_UNBLANK) ?
0e501834
HMH		 6067 bd->props.brightness : 0;
6068
6069 dbg_printk(TPACPI_DBG_BRGHT,
6070 "backlight: attempt to set level to %d\n",
6071 level);
6072
6073 /* it is the backlight class's job (caller) to handle
6074 * EINTR and other errors properly */
6075 return brightness_set(level);
b21a15f6
HMH		 6076}
6077
e11aecf1 6078static int brightness_get(struct backlight_device *bd)
a3f104c0 6079{
e11aecf1 6080 int status, res;
a3f104c0 6081
0e501834 6082 res = mutex_lock_killable(&brightness_mutex);
e11aecf1 6083 if (res < 0)
0e501834
HMH		 6084 return 0;
6085
6086 res = tpacpi_brightness_get_raw(&status);
6087
6088 mutex_unlock(&brightness_mutex);
6089
6090 if (res < 0)
6091 return 0;
e11e211a 6092
e11aecf1 6093 return status & TP_EC_BACKLIGHT_LVLMSK;
e11e211a
HMH		 6094}
6095
347a2686
HMH		 6096static void tpacpi_brightness_notify_change(void)
6097{
6098 backlight_force_update(ibm_backlight_device,
6099 BACKLIGHT_UPDATE_HOTKEY);
6100}
6101
acc2472e 6102static const struct backlight_ops ibm_backlight_data = {
35ff8b9f
HMH		 6103 .get_brightness = brightness_get,
6104 .update_status = brightness_update_status,
56b6aeb0 6105};
e11e211a 6106
b21a15f6 6107/* --------------------------------------------------------------------- */
e11e211a 6108
122f2672
HMH		 6109/*
6110 * Call _BCL method of video device. On some ThinkPads this will
6111 * switch the firmware to the ACPI brightness control mode.
6112 */
6113
77775838
HMH		 6114static int __init tpacpi_query_bcl_levels(acpi_handle handle)
6115{
6116 struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
6117 union acpi_object *obj;
6118 int rc;
6119
122f2672 6120 if (ACPI_SUCCESS(acpi_evaluate_object(handle, "_BCL", NULL, &buffer))) {
77775838
HMH		 6121 obj = (union acpi_object *)buffer.pointer;
6122 if (!obj || (obj->type != ACPI_TYPE_PACKAGE)) {
0978e012
JP		 6123 pr_err("Unknown _BCL data, please report this to %s\n",
6124 TPACPI_MAIL);
77775838
HMH		 6125 rc = 0;
6126 } else {
6127 rc = obj->package.count;
6128 }
6129 } else {
6130 return 0;
6131 }
6132
6133 kfree(buffer.pointer);
6134 return rc;
6135}
6136
77775838
HMH		 6137
6138/*
6139 * Returns 0 (no ACPI _BCL or _BCL invalid), or size of brightness map
6140 */
6141static unsigned int __init tpacpi_check_std_acpi_brightness_support(void)
6142{
122f2672 6143 acpi_handle video_device;
77775838 6144 int bcl_levels = 0;
77775838 6145
122f2672
HMH		 6146 tpacpi_acpi_handle_locate("video", ACPI_VIDEO_HID, &video_device);
6147 if (video_device)
6148 bcl_levels = tpacpi_query_bcl_levels(video_device);
77775838 6149
122f2672 6150 tp_features.bright_acpimode = (bcl_levels > 0);
77775838 6151
122f2672 6152 return (bcl_levels > 2) ? (bcl_levels - 2) : 0;
77775838
HMH		 6153}
6154
59fe4fe3
HMH		 6155/*
6156 * These are only useful for models that have only one possibility
6157 * of GPU. If the BIOS model handles both ATI and Intel, don't use
6158 * these quirks.
6159 */
6160#define TPACPI_BRGHT_Q_NOEC 0x0001 /* Must NOT use EC HBRV */
6161#define TPACPI_BRGHT_Q_EC 0x0002 /* Should or must use EC HBRV */
6162#define TPACPI_BRGHT_Q_ASK 0x8000 /* Ask for user report */
6163
6164static const struct tpacpi_quirk brightness_quirk_table[] __initconst = {
6165 /* Models with ATI GPUs known to require ECNVRAM mode */
6166 TPACPI_Q_IBM('1', 'Y', TPACPI_BRGHT_Q_EC), /* T43/p ATI */
6167
6da25bf5 6168 /* Models with ATI GPUs that can use ECNVRAM */
7d1894d8 6169 TPACPI_Q_IBM('1', 'R', TPACPI_BRGHT_Q_EC), /* R50,51 T40-42 */
59fe4fe3 6170 TPACPI_Q_IBM('1', 'Q', TPACPI_BRGHT_Q_ASK|TPACPI_BRGHT_Q_EC),
7d1894d8 6171 TPACPI_Q_IBM('7', '6', TPACPI_BRGHT_Q_EC), /* R52 */
59fe4fe3
HMH		 6172 TPACPI_Q_IBM('7', '8', TPACPI_BRGHT_Q_ASK|TPACPI_BRGHT_Q_EC),
6173
6da25bf5 6174 /* Models with Intel Extreme Graphics 2 */
7d1894d8 6175 TPACPI_Q_IBM('1', 'U', TPACPI_BRGHT_Q_NOEC), /* X40 */
a9f8eacc
HMH		 6176 TPACPI_Q_IBM('1', 'V', TPACPI_BRGHT_Q_ASK|TPACPI_BRGHT_Q_EC),
6177 TPACPI_Q_IBM('1', 'W', TPACPI_BRGHT_Q_ASK|TPACPI_BRGHT_Q_EC),
59fe4fe3
HMH		 6178
6179 /* Models with Intel GMA900 */
6180 TPACPI_Q_IBM('7', '0', TPACPI_BRGHT_Q_NOEC), /* T43, R52 */
6181 TPACPI_Q_IBM('7', '4', TPACPI_BRGHT_Q_NOEC), /* X41 */
6182 TPACPI_Q_IBM('7', '5', TPACPI_BRGHT_Q_NOEC), /* X41 Tablet */
6183};
6184
77775838
HMH		 6185/*
6186 * Returns < 0 for error, otherwise sets tp_features.bright_*
6187 * and bright_maxlvl.
6188 */
6189static void __init tpacpi_detect_brightness_capabilities(void)
6190{
6191 unsigned int b;
6192
6193 vdbg_printk(TPACPI_DBG_INIT,
6194 "detecting firmware brightness interface capabilities\n");
6195
6196 /* we could run a quirks check here (same table used by
6197 * brightness_init) if needed */
6198
6199 /*
6200 * We always attempt to detect acpi support, so as to switch
6201 * Lenovo Vista BIOS to ACPI brightness mode even if we are not
6202 * going to publish a backlight interface
6203 */
6204 b = tpacpi_check_std_acpi_brightness_support();
6205 switch (b) {
6206 case 16:
6207 bright_maxlvl = 15;
0978e012 6208 pr_info("detected a 16-level brightness capable ThinkPad\n");
77775838
HMH		 6209 break;
6210 case 8:
6211 case 0:
6212 bright_maxlvl = 7;
0978e012 6213 pr_info("detected a 8-level brightness capable ThinkPad\n");
77775838
HMH		 6214 break;
6215 default:
0978e012 6216 pr_err("Unsupported brightness interface, "
77775838
HMH		 6217 "please contact %s\n", TPACPI_MAIL);
6218 tp_features.bright_unkfw = 1;
6219 bright_maxlvl = b - 1;
6220 }
6221}
6222
a5763f22 6223static int __init brightness_init(struct ibm_init_struct *iibm)
56b6aeb0 6224{
a19a6ee6 6225 struct backlight_properties props;
56b6aeb0 6226 int b;
59fe4fe3 6227 unsigned long quirks;
56b6aeb0 6228
fe08bc4b
HMH		 6229 vdbg_printk(TPACPI_DBG_INIT, "initializing brightness subdriver\n");
6230
f432255e
HMH		 6231 mutex_init(&brightness_mutex);
6232
59fe4fe3
HMH		 6233 quirks = tpacpi_check_quirks(brightness_quirk_table,
6234 ARRAY_SIZE(brightness_quirk_table));
6235
77775838
HMH		 6236 /* tpacpi_detect_brightness_capabilities() must have run already */
6237
6238 /* if it is unknown, we don't handle it: it wouldn't be safe */
6239 if (tp_features.bright_unkfw)
6240 return 1;
2dba1b5d 6241
b5972796 6242 if (!brightness_enable) {
0e501834 6243 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_BRGHT,
b5972796
HMH		 6244 "brightness support disabled by "
6245 "module parameter\n");
6246 return 1;
6247 }
6248
217f0963
HMH		 6249 if (acpi_video_backlight_support()) {
6250 if (brightness_enable > 1) {
0978e012
JP		 6251 pr_info("Standard ACPI backlight interface "
6252 "available, not loading native one\n");
217f0963
HMH		 6253 return 1;
6254 } else if (brightness_enable == 1) {
0978e012 6255 pr_warn("Cannot enable backlight brightness support, "
217f0963 6256 "ACPI is already handling it. Refer to the "
0978e012 6257 "acpi_backlight kernel parameter.\n");
217f0963
HMH		 6258 return 1;
6259 }
6260 } else if (tp_features.bright_acpimode && brightness_enable > 1) {
0978e012
JP		 6261 pr_notice("Standard ACPI backlight interface not "
6262 "available, thinkpad_acpi native "
6263 "brightness control enabled\n");
217f0963
HMH		 6264 }
6265
0e501834
HMH		 6266 /*
6267 * Check for module parameter bogosity, note that we
6268 * init brightness_mode to TPACPI_BRGHT_MODE_MAX in order to be
6269 * able to detect "unspecified"
6270 */
6271 if (brightness_mode > TPACPI_BRGHT_MODE_MAX)
6272 return -EINVAL;
24d3b774 6273
0e501834
HMH		 6274 /* TPACPI_BRGHT_MODE_AUTO not implemented yet, just use default */
6275 if (brightness_mode == TPACPI_BRGHT_MODE_AUTO ||
6276 brightness_mode == TPACPI_BRGHT_MODE_MAX) {
59fe4fe3
HMH		 6277 if (quirks & TPACPI_BRGHT_Q_EC)
6278 brightness_mode = TPACPI_BRGHT_MODE_ECNVRAM;
6279 else
0e501834 6280 brightness_mode = TPACPI_BRGHT_MODE_UCMS_STEP;
24d3b774 6281
0e501834 6282 dbg_printk(TPACPI_DBG_BRGHT,
59fe4fe3 6283 "driver auto-selected brightness_mode=%d\n",
0e501834
HMH		 6284 brightness_mode);
6285 }
24d3b774 6286
d7880f10 6287 /* Safety */
e28393c0 6288 if (!tpacpi_is_ibm() &&
d7880f10
HMH		 6289 (brightness_mode == TPACPI_BRGHT_MODE_ECNVRAM ||
6290 brightness_mode == TPACPI_BRGHT_MODE_EC))
6291 return -EINVAL;
6292
0e501834 6293 if (tpacpi_brightness_get_raw(&b) < 0)
24d3b774 6294 return 1;
56b6aeb0 6295
a19a6ee6 6296 memset(&props, 0, sizeof(struct backlight_properties));
bb7ca747 6297 props.type = BACKLIGHT_PLATFORM;
77775838
HMH		 6298 props.max_brightness = bright_maxlvl;
6299 props.brightness = b & TP_EC_BACKLIGHT_LVLMSK;
a19a6ee6
MG		 6300 ibm_backlight_device = backlight_device_register(TPACPI_BACKLIGHT_DEV_NAME,
6301 NULL, NULL,
6302 &ibm_backlight_data,
6303 &props);
56b6aeb0 6304 if (IS_ERR(ibm_backlight_device)) {
435c47e2
HMH		 6305 int rc = PTR_ERR(ibm_backlight_device);
6306 ibm_backlight_device = NULL;
0978e012 6307 pr_err("Could not register backlight device\n");
435c47e2 6308 return rc;
56b6aeb0 6309 }
0e501834
HMH		 6310 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_BRGHT,
6311 "brightness is supported\n");
56b6aeb0 6312
59fe4fe3 6313 if (quirks & TPACPI_BRGHT_Q_ASK) {
0978e012
JP		 6314 pr_notice("brightness: will use unverified default: "
6315 "brightness_mode=%d\n", brightness_mode);
6316 pr_notice("brightness: please report to %s whether it works well "
6317 "or not on your ThinkPad\n", TPACPI_MAIL);
59fe4fe3
HMH		 6318 }
6319
7d9745cf
HMH		 6320 /* Added by mistake in early 2007. Probably useless, but it could
6321 * be working around some unknown firmware problem where the value
6322 * read at startup doesn't match the real hardware state... so leave
6323 * it in place just in case */
56b6aeb0
HMH		 6324 backlight_update_status(ibm_backlight_device);
6325
347a2686
HMH		 6326 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_BRGHT,
6327 "brightness: registering brightness hotkeys "
6328 "as change notification\n");
6329 tpacpi_hotkey_driver_mask_set(hotkey_driver_mask
6330 | TP_ACPI_HKEY_BRGHTUP_MASK
3098064d 6331 | TP_ACPI_HKEY_BRGHTDWN_MASK);
56b6aeb0
HMH		 6332 return 0;
6333}
6334
0e501834
HMH		 6335static void brightness_suspend(pm_message_t state)
6336{
6337 tpacpi_brightness_checkpoint_nvram();
6338}
6339
6340static void brightness_shutdown(void)
6341{
6342 tpacpi_brightness_checkpoint_nvram();
6343}
6344
56b6aeb0
HMH		 6345static void brightness_exit(void)
6346{
6347 if (ibm_backlight_device) {
0e501834 6348 vdbg_printk(TPACPI_DBG_EXIT | TPACPI_DBG_BRGHT,
fe08bc4b 6349 "calling backlight_device_unregister()\n");
56b6aeb0 6350 backlight_device_unregister(ibm_backlight_device);
56b6aeb0 6351 }
0e501834
HMH		 6352
6353 tpacpi_brightness_checkpoint_nvram();
56b6aeb0
HMH		 6354}
6355
887965e6 6356static int brightness_read(struct seq_file *m)
56b6aeb0 6357{
56b6aeb0
HMH		 6358 int level;
6359
35ff8b9f
HMH		 6360 level = brightness_get(NULL);
6361 if (level < 0) {
887965e6 6362 seq_printf(m, "level:\t\tunreadable\n");
56b6aeb0 6363 } else {
887965e6
AD		 6364 seq_printf(m, "level:\t\t%d\n", level);
6365 seq_printf(m, "commands:\tup, down\n");
77775838
HMH		 6366 seq_printf(m, "commands:\tlevel <level> (<level> is 0-%d)\n",
6367 bright_maxlvl);
56b6aeb0
HMH		 6368 }
6369
887965e6 6370 return 0;
56b6aeb0
HMH		 6371}
6372
8acb0250
HM		 6373static int brightness_write(char *buf)
6374{
6375 int level;
4273af8d 6376 int rc;
1da177e4 6377 char *cmd;
1da177e4 6378
4273af8d
HMH		 6379 level = brightness_get(NULL);
6380 if (level < 0)
6381 return level;
78f81cc4 6382
4273af8d 6383 while ((cmd = next_cmd(&buf))) {
78f81cc4 6384 if (strlencmp(cmd, "up") == 0) {
77775838 6385 if (level < bright_maxlvl)
4273af8d 6386 level++;
78f81cc4 6387 } else if (strlencmp(cmd, "down") == 0) {
4273af8d
HMH		 6388 if (level > 0)
6389 level--;
6390 } else if (sscanf(cmd, "level %d", &level) == 1 &&
77775838 6391 level >= 0 && level <= bright_maxlvl) {
4273af8d 6392 /* new level set */
78f81cc4
BD		 6393 } else
6394 return -EINVAL;
78f81cc4
BD		 6395 }
6396
0e501834
HMH		 6397 tpacpi_disclose_usertask("procfs brightness",
6398 "set level to %d\n", level);
6399
4273af8d
HMH		 6400 /*
6401 * Now we know what the final level should be, so we try to set it.
6402 * Doing it this way makes the syscall restartable in case of EINTR
6403 */
6404 rc = brightness_set(level);
347a2686
HMH		 6405 if (!rc && ibm_backlight_device)
6406 backlight_force_update(ibm_backlight_device,
6407 BACKLIGHT_UPDATE_SYSFS);
80a8d122 6408 return (rc == -EINTR)? -ERESTARTSYS : rc;
78f81cc4
BD		 6409}
6410
a5763f22
HMH		 6411static struct ibm_struct brightness_driver_data = {
6412 .name = "brightness",
6413 .read = brightness_read,
6414 .write = brightness_write,
6415 .exit = brightness_exit,
0e501834
HMH		 6416 .suspend = brightness_suspend,
6417 .shutdown = brightness_shutdown,
a5763f22
HMH		 6418};
6419
56b6aeb0
HMH		 6420/*************************************************************************
6421 * Volume subdriver
6422 */
fb87a811 6423
329e4e18
HMH		 6424/*
6425 * IBM ThinkPads have a simple volume controller with MUTE gating.
6426 * Very early Lenovo ThinkPads follow the IBM ThinkPad spec.
6427 *
6428 * Since the *61 series (and probably also the later *60 series), Lenovo
6429 * ThinkPads only implement the MUTE gate.
6430 *
6431 * EC register 0x30
6432 * Bit 6: MUTE (1 mutes sound)
6433 * Bit 3-0: Volume
6434 * Other bits should be zero as far as we know.
6435 *
6436 * This is also stored in CMOS NVRAM, byte 0x60, bit 6 (MUTE), and
6437 * bits 3-0 (volume). Other bits in NVRAM may have other functions,
6438 * such as bit 7 which is used to detect repeated presses of MUTE,
6439 * and we leave them unchanged.
6440 */
6441
ff850c33
HMH		 6442#ifdef CONFIG_THINKPAD_ACPI_ALSA_SUPPORT
6443
0d204c34
HMH		 6444#define TPACPI_ALSA_DRVNAME "ThinkPad EC"
6445#define TPACPI_ALSA_SHRTNAME "ThinkPad Console Audio Control"
6446#define TPACPI_ALSA_MIXERNAME TPACPI_ALSA_SHRTNAME
6447
ead510ce 6448static int alsa_index = ~((1 << (SNDRV_CARDS - 3)) - 1); /* last three slots */
0d204c34
HMH		 6449static char *alsa_id = "ThinkPadEC";
6450static int alsa_enable = SNDRV_DEFAULT_ENABLE1;
6451
6452struct tpacpi_alsa_data {
6453 struct snd_card *card;
6454 struct snd_ctl_elem_id *ctl_mute_id;
6455 struct snd_ctl_elem_id *ctl_vol_id;
6456};
6457
6458static struct snd_card *alsa_card;
6459
329e4e18
HMH		 6460enum {
6461 TP_EC_AUDIO = 0x30,
6462
6463 /* TP_EC_AUDIO bits */
6464 TP_EC_AUDIO_MUTESW = 6,
6465
6466 /* TP_EC_AUDIO bitmasks */
6467 TP_EC_AUDIO_LVL_MSK = 0x0F,
6468 TP_EC_AUDIO_MUTESW_MSK = (1 << TP_EC_AUDIO_MUTESW),
6469
6470 /* Maximum volume */
6471 TP_EC_VOLUME_MAX = 14,
6472};
6473
6474enum tpacpi_volume_access_mode {
6475 TPACPI_VOL_MODE_AUTO = 0, /* Not implemented yet */
6476 TPACPI_VOL_MODE_EC, /* Pure EC control */
6477 TPACPI_VOL_MODE_UCMS_STEP, /* UCMS step-based control: N/A */
6478 TPACPI_VOL_MODE_ECNVRAM, /* EC control w/ NVRAM store */
6479 TPACPI_VOL_MODE_MAX
6480};
6481
a112ceee
HMH		 6482enum tpacpi_volume_capabilities {
6483 TPACPI_VOL_CAP_AUTO = 0, /* Use white/blacklist */
6484 TPACPI_VOL_CAP_VOLMUTE, /* Output vol and mute */
6485 TPACPI_VOL_CAP_MUTEONLY, /* Output mute only */
6486 TPACPI_VOL_CAP_MAX
6487};
6488
329e4e18
HMH		 6489static enum tpacpi_volume_access_mode volume_mode =
6490 TPACPI_VOL_MODE_MAX;
6491
a112ceee 6492static enum tpacpi_volume_capabilities volume_capabilities;
c7ac6291 6493static int volume_control_allowed;
f74a27d4 6494
329e4e18
HMH		 6495/*
6496 * Used to syncronize writers to TP_EC_AUDIO and
6497 * TP_NVRAM_ADDR_MIXER, as we need to do read-modify-write
6498 */
6499static struct mutex volume_mutex;
6500
6501static void tpacpi_volume_checkpoint_nvram(void)
78f81cc4 6502{
329e4e18
HMH		 6503 u8 lec = 0;
6504 u8 b_nvram;
a112ceee 6505 u8 ec_mask;
329e4e18
HMH		 6506
6507 if (volume_mode != TPACPI_VOL_MODE_ECNVRAM)
6508 return;
c7ac6291
HMH		 6509 if (!volume_control_allowed)
6510 return;
329e4e18
HMH		 6511
6512 vdbg_printk(TPACPI_DBG_MIXER,
6513 "trying to checkpoint mixer state to NVRAM...\n");
78f81cc4 6514
a112ceee
HMH		 6515 if (tp_features.mixer_no_level_control)
6516 ec_mask = TP_EC_AUDIO_MUTESW_MSK;
6517 else
6518 ec_mask = TP_EC_AUDIO_MUTESW_MSK | TP_EC_AUDIO_LVL_MSK;
6519
329e4e18
HMH		 6520 if (mutex_lock_killable(&volume_mutex) < 0)
6521 return;
6522
6523 if (unlikely(!acpi_ec_read(TP_EC_AUDIO, &lec)))
6524 goto unlock;
6525 lec &= ec_mask;
6526 b_nvram = nvram_read_byte(TP_NVRAM_ADDR_MIXER);
6527
6528 if (lec != (b_nvram & ec_mask)) {
6529 /* NVRAM needs update */
6530 b_nvram &= ~ec_mask;
6531 b_nvram |= lec;
6532 nvram_write_byte(b_nvram, TP_NVRAM_ADDR_MIXER);
6533 dbg_printk(TPACPI_DBG_MIXER,
6534 "updated NVRAM mixer status to 0x%02x (0x%02x)\n",
6535 (unsigned int) lec, (unsigned int) b_nvram);
78f81cc4 6536 } else {
329e4e18
HMH		 6537 vdbg_printk(TPACPI_DBG_MIXER,
6538 "NVRAM mixer status already is 0x%02x (0x%02x)\n",
6539 (unsigned int) lec, (unsigned int) b_nvram);
78f81cc4
BD		 6540 }
6541
329e4e18
HMH		 6542unlock:
6543 mutex_unlock(&volume_mutex);
78f81cc4
BD		 6544}
6545
329e4e18 6546static int volume_get_status_ec(u8 *status)
78f81cc4 6547{
329e4e18 6548 u8 s;
78f81cc4 6549
329e4e18
HMH		 6550 if (!acpi_ec_read(TP_EC_AUDIO, &s))
6551 return -EIO;
78f81cc4 6552
329e4e18 6553 *status = s;
1da177e4 6554
329e4e18 6555 dbg_printk(TPACPI_DBG_MIXER, "status 0x%02x\n", s);
35ff8b9f 6556
329e4e18
HMH		 6557 return 0;
6558}
78f81cc4 6559
329e4e18
HMH		 6560static int volume_get_status(u8 *status)
6561{
6562 return volume_get_status_ec(status);
6563}
78f81cc4 6564
329e4e18
HMH		 6565static int volume_set_status_ec(const u8 status)
6566{
6567 if (!acpi_ec_write(TP_EC_AUDIO, status))
6568 return -EIO;
78f81cc4 6569
329e4e18
HMH		 6570 dbg_printk(TPACPI_DBG_MIXER, "set EC mixer to 0x%02x\n", status);
6571
6572 return 0;
6573}
6574
6575static int volume_set_status(const u8 status)
6576{
6577 return volume_set_status_ec(status);
6578}
6579
88cc8377
HMH		 6580/* returns < 0 on error, 0 on no change, 1 on change */
6581static int __volume_set_mute_ec(const bool mute)
329e4e18
HMH		 6582{
6583 int rc;
6584 u8 s, n;
6585
6586 if (mutex_lock_killable(&volume_mutex) < 0)
6587 return -EINTR;
6588
6589 rc = volume_get_status_ec(&s);
6590 if (rc)
6591 goto unlock;
6592
6593 n = (mute) ? s | TP_EC_AUDIO_MUTESW_MSK :
6594 s & ~TP_EC_AUDIO_MUTESW_MSK;
6595
88cc8377 6596 if (n != s) {
329e4e18 6597 rc = volume_set_status_ec(n);
88cc8377
HMH		 6598 if (!rc)
6599 rc = 1;
6600 }
329e4e18
HMH		 6601
6602unlock:
6603 mutex_unlock(&volume_mutex);
6604 return rc;
6605}
6606
88cc8377
HMH		 6607static int volume_alsa_set_mute(const bool mute)
6608{
6609 dbg_printk(TPACPI_DBG_MIXER, "ALSA: trying to %smute\n",
6610 (mute) ? "" : "un");
6611 return __volume_set_mute_ec(mute);
6612}
6613
329e4e18
HMH		 6614static int volume_set_mute(const bool mute)
6615{
88cc8377
HMH		 6616 int rc;
6617
329e4e18
HMH		 6618 dbg_printk(TPACPI_DBG_MIXER, "trying to %smute\n",
6619 (mute) ? "" : "un");
88cc8377
HMH		 6620
6621 rc = __volume_set_mute_ec(mute);
6622 return (rc < 0) ? rc : 0;
329e4e18
HMH		 6623}
6624
88cc8377
HMH		 6625/* returns < 0 on error, 0 on no change, 1 on change */
6626static int __volume_set_volume_ec(const u8 vol)
329e4e18
HMH		 6627{
6628 int rc;
6629 u8 s, n;
6630
6631 if (vol > TP_EC_VOLUME_MAX)
6632 return -EINVAL;
6633
6634 if (mutex_lock_killable(&volume_mutex) < 0)
6635 return -EINTR;
6636
6637 rc = volume_get_status_ec(&s);
6638 if (rc)
6639 goto unlock;
6640
6641 n = (s & ~TP_EC_AUDIO_LVL_MSK) | vol;
6642
88cc8377 6643 if (n != s) {
329e4e18 6644 rc = volume_set_status_ec(n);
88cc8377
HMH		 6645 if (!rc)
6646 rc = 1;
6647 }
329e4e18
HMH		 6648
6649unlock:
6650 mutex_unlock(&volume_mutex);
6651 return rc;
6652}
6653
88cc8377 6654static int volume_alsa_set_volume(const u8 vol)
329e4e18
HMH		 6655{
6656 dbg_printk(TPACPI_DBG_MIXER,
88cc8377
HMH		 6657 "ALSA: trying to set volume level to %hu\n", vol);
6658 return __volume_set_volume_ec(vol);
329e4e18
HMH		 6659}
6660
0d204c34
HMH		 6661static void volume_alsa_notify_change(void)
6662{
6663 struct tpacpi_alsa_data *d;
6664
6665 if (alsa_card && alsa_card->private_data) {
6666 d = alsa_card->private_data;
6667 if (d->ctl_mute_id)
6668 snd_ctl_notify(alsa_card,
6669 SNDRV_CTL_EVENT_MASK_VALUE,
6670 d->ctl_mute_id);
6671 if (d->ctl_vol_id)
6672 snd_ctl_notify(alsa_card,
6673 SNDRV_CTL_EVENT_MASK_VALUE,
6674 d->ctl_vol_id);
6675 }
6676}
6677
6678static int volume_alsa_vol_info(struct snd_kcontrol *kcontrol,
6679 struct snd_ctl_elem_info *uinfo)
6680{
6681 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
6682 uinfo->count = 1;
6683 uinfo->value.integer.min = 0;
6684 uinfo->value.integer.max = TP_EC_VOLUME_MAX;
6685 return 0;
6686}
6687
6688static int volume_alsa_vol_get(struct snd_kcontrol *kcontrol,
6689 struct snd_ctl_elem_value *ucontrol)
6690{
6691 u8 s;
6692 int rc;
6693
6694 rc = volume_get_status(&s);
6695 if (rc < 0)
6696 return rc;
6697
6698 ucontrol->value.integer.value[0] = s & TP_EC_AUDIO_LVL_MSK;
6699 return 0;
6700}
6701
6702static int volume_alsa_vol_put(struct snd_kcontrol *kcontrol,
6703 struct snd_ctl_elem_value *ucontrol)
6704{
38e11cde
HMH		 6705 tpacpi_disclose_usertask("ALSA", "set volume to %ld\n",
6706 ucontrol->value.integer.value[0]);
88cc8377 6707 return volume_alsa_set_volume(ucontrol->value.integer.value[0]);
0d204c34
HMH		 6708}
6709
6710#define volume_alsa_mute_info snd_ctl_boolean_mono_info
6711
6712static int volume_alsa_mute_get(struct snd_kcontrol *kcontrol,
6713 struct snd_ctl_elem_value *ucontrol)
6714{
6715 u8 s;
6716 int rc;
6717
6718 rc = volume_get_status(&s);
6719 if (rc < 0)
6720 return rc;
6721
6722 ucontrol->value.integer.value[0] =
6723 (s & TP_EC_AUDIO_MUTESW_MSK) ? 0 : 1;
6724 return 0;
6725}
6726
6727static int volume_alsa_mute_put(struct snd_kcontrol *kcontrol,
6728 struct snd_ctl_elem_value *ucontrol)
6729{
38e11cde
HMH		 6730 tpacpi_disclose_usertask("ALSA", "%smute\n",
6731 ucontrol->value.integer.value[0] ?
6732 "un" : "");
88cc8377 6733 return volume_alsa_set_mute(!ucontrol->value.integer.value[0]);
0d204c34
HMH		 6734}
6735
6736static struct snd_kcontrol_new volume_alsa_control_vol __devinitdata = {
6737 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
6738 .name = "Console Playback Volume",
6739 .index = 0,
6740 .access = SNDRV_CTL_ELEM_ACCESS_READ,
6741 .info = volume_alsa_vol_info,
6742 .get = volume_alsa_vol_get,
6743};
6744
6745static struct snd_kcontrol_new volume_alsa_control_mute __devinitdata = {
6746 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
6747 .name = "Console Playback Switch",
6748 .index = 0,
6749 .access = SNDRV_CTL_ELEM_ACCESS_READ,
6750 .info = volume_alsa_mute_info,
6751 .get = volume_alsa_mute_get,
6752};
6753
329e4e18
HMH		 6754static void volume_suspend(pm_message_t state)
6755{
6756 tpacpi_volume_checkpoint_nvram();
6757}
6758
0d204c34
HMH		 6759static void volume_resume(void)
6760{
6761 volume_alsa_notify_change();
6762}
6763
329e4e18
HMH		 6764static void volume_shutdown(void)
6765{
6766 tpacpi_volume_checkpoint_nvram();
6767}
6768
6769static void volume_exit(void)
6770{
0d204c34
HMH		 6771 if (alsa_card) {
6772 snd_card_free(alsa_card);
6773 alsa_card = NULL;
6774 }
6775
329e4e18
HMH		 6776 tpacpi_volume_checkpoint_nvram();
6777}
6778
0d204c34
HMH		 6779static int __init volume_create_alsa_mixer(void)
6780{
6781 struct snd_card *card;
6782 struct tpacpi_alsa_data *data;
6783 struct snd_kcontrol *ctl_vol;
6784 struct snd_kcontrol *ctl_mute;
6785 int rc;
6786
6787 rc = snd_card_create(alsa_index, alsa_id, THIS_MODULE,
6788 sizeof(struct tpacpi_alsa_data), &card);
74c75c18 6789 if (rc < 0 || !card) {
0978e012 6790 pr_err("Failed to create ALSA card structures: %d\n", rc);
74c75c18
HMH		 6791 return 1;
6792 }
0d204c34
HMH		 6793
6794 BUG_ON(!card->private_data);
6795 data = card->private_data;
6796 data->card = card;
6797
6798 strlcpy(card->driver, TPACPI_ALSA_DRVNAME,
6799 sizeof(card->driver));
6800 strlcpy(card->shortname, TPACPI_ALSA_SHRTNAME,
6801 sizeof(card->shortname));
6802 snprintf(card->mixername, sizeof(card->mixername), "ThinkPad EC %s",
6803 (thinkpad_id.ec_version_str) ?
6804 thinkpad_id.ec_version_str : "(unknown)");
6805 snprintf(card->longname, sizeof(card->longname),
6806 "%s at EC reg 0x%02x, fw %s", card->shortname, TP_EC_AUDIO,
6807 (thinkpad_id.ec_version_str) ?
6808 thinkpad_id.ec_version_str : "unknown");
6809
6810 if (volume_control_allowed) {
6811 volume_alsa_control_vol.put = volume_alsa_vol_put;
6812 volume_alsa_control_vol.access =
6813 SNDRV_CTL_ELEM_ACCESS_READWRITE;
6814
6815 volume_alsa_control_mute.put = volume_alsa_mute_put;
6816 volume_alsa_control_mute.access =
6817 SNDRV_CTL_ELEM_ACCESS_READWRITE;
6818 }
6819
6820 if (!tp_features.mixer_no_level_control) {
6821 ctl_vol = snd_ctl_new1(&volume_alsa_control_vol, NULL);
6822 rc = snd_ctl_add(card, ctl_vol);
6823 if (rc < 0) {
0978e012
JP		 6824 pr_err("Failed to create ALSA volume control: %d\n",
6825 rc);
74c75c18 6826 goto err_exit;
78f81cc4 6827 }
0d204c34
HMH		 6828 data->ctl_vol_id = &ctl_vol->id;
6829 }
78f81cc4 6830
0d204c34
HMH		 6831 ctl_mute = snd_ctl_new1(&volume_alsa_control_mute, NULL);
6832 rc = snd_ctl_add(card, ctl_mute);
6833 if (rc < 0) {
0978e012 6834 pr_err("Failed to create ALSA mute control: %d\n", rc);
74c75c18 6835 goto err_exit;
0d204c34
HMH		 6836 }
6837 data->ctl_mute_id = &ctl_mute->id;
35ff8b9f 6838
0d204c34
HMH		 6839 snd_card_set_dev(card, &tpacpi_pdev->dev);
6840 rc = snd_card_register(card);
0d204c34 6841 if (rc < 0) {
0978e012 6842 pr_err("Failed to register ALSA card: %d\n", rc);
74c75c18 6843 goto err_exit;
0d204c34
HMH		 6844 }
6845
6846 alsa_card = card;
74c75c18
HMH		 6847 return 0;
6848
6849err_exit:
6850 snd_card_free(card);
6851 return 1;
0d204c34
HMH		 6852}
6853
a112ceee
HMH		 6854#define TPACPI_VOL_Q_MUTEONLY 0x0001 /* Mute-only control available */
6855#define TPACPI_VOL_Q_LEVEL 0x0002 /* Volume control available */
6856
6857static const struct tpacpi_quirk volume_quirk_table[] __initconst = {
6858 /* Whitelist volume level on all IBM by default */
6859 { .vendor = PCI_VENDOR_ID_IBM,
6860 .bios = TPACPI_MATCH_ANY,
6861 .ec = TPACPI_MATCH_ANY,
6862 .quirks = TPACPI_VOL_Q_LEVEL },
6863
6864 /* Lenovo models with volume control (needs confirmation) */
6865 TPACPI_QEC_LNV('7', 'C', TPACPI_VOL_Q_LEVEL), /* R60/i */
6866 TPACPI_QEC_LNV('7', 'E', TPACPI_VOL_Q_LEVEL), /* R60e/i */
6867 TPACPI_QEC_LNV('7', '9', TPACPI_VOL_Q_LEVEL), /* T60/p */
6868 TPACPI_QEC_LNV('7', 'B', TPACPI_VOL_Q_LEVEL), /* X60/s */
6869 TPACPI_QEC_LNV('7', 'J', TPACPI_VOL_Q_LEVEL), /* X60t */
6870 TPACPI_QEC_LNV('7', '7', TPACPI_VOL_Q_LEVEL), /* Z60 */
6871 TPACPI_QEC_LNV('7', 'F', TPACPI_VOL_Q_LEVEL), /* Z61 */
6872
6873 /* Whitelist mute-only on all Lenovo by default */
6874 { .vendor = PCI_VENDOR_ID_LENOVO,
6875 .bios = TPACPI_MATCH_ANY,
6876 .ec = TPACPI_MATCH_ANY,
6877 .quirks = TPACPI_VOL_Q_MUTEONLY }
6878};
6879
329e4e18
HMH		 6880static int __init volume_init(struct ibm_init_struct *iibm)
6881{
a112ceee 6882 unsigned long quirks;
0d204c34 6883 int rc;
a112ceee 6884
329e4e18
HMH		 6885 vdbg_printk(TPACPI_DBG_INIT, "initializing volume subdriver\n");
6886
6887 mutex_init(&volume_mutex);
6888
6889 /*
6890 * Check for module parameter bogosity, note that we
6891 * init volume_mode to TPACPI_VOL_MODE_MAX in order to be
6892 * able to detect "unspecified"
6893 */
6894 if (volume_mode > TPACPI_VOL_MODE_MAX)
6895 return -EINVAL;
6896
6897 if (volume_mode == TPACPI_VOL_MODE_UCMS_STEP) {
0978e012
JP		 6898 pr_err("UCMS step volume mode not implemented, "
6899 "please contact %s\n", TPACPI_MAIL);
329e4e18
HMH		 6900 return 1;
6901 }
6902
a112ceee
HMH		 6903 if (volume_capabilities >= TPACPI_VOL_CAP_MAX)
6904 return -EINVAL;
6905
0d204c34
HMH		 6906 /*
6907 * The ALSA mixer is our primary interface.
6908 * When disabled, don't install the subdriver at all
6909 */
6910 if (!alsa_enable) {
6911 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER,
6912 "ALSA mixer disabled by parameter, "
6913 "not loading volume subdriver...\n");
6914 return 1;
6915 }
6916
a112ceee
HMH		 6917 quirks = tpacpi_check_quirks(volume_quirk_table,
6918 ARRAY_SIZE(volume_quirk_table));
6919
6920 switch (volume_capabilities) {
6921 case TPACPI_VOL_CAP_AUTO:
6922 if (quirks & TPACPI_VOL_Q_MUTEONLY)
6923 tp_features.mixer_no_level_control = 1;
6924 else if (quirks & TPACPI_VOL_Q_LEVEL)
6925 tp_features.mixer_no_level_control = 0;
6926 else
6927 return 1; /* no mixer */
6928 break;
6929 case TPACPI_VOL_CAP_VOLMUTE:
6930 tp_features.mixer_no_level_control = 0;
6931 break;
6932 case TPACPI_VOL_CAP_MUTEONLY:
6933 tp_features.mixer_no_level_control = 1;
6934 break;
6935 default:
6936 return 1;
6937 }
6938
6939 if (volume_capabilities != TPACPI_VOL_CAP_AUTO)
6940 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER,
6941 "using user-supplied volume_capabilities=%d\n",
6942 volume_capabilities);
6943
329e4e18
HMH		 6944 if (volume_mode == TPACPI_VOL_MODE_AUTO ||
6945 volume_mode == TPACPI_VOL_MODE_MAX) {
6946 volume_mode = TPACPI_VOL_MODE_ECNVRAM;
6947
6948 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER,
6949 "driver auto-selected volume_mode=%d\n",
6950 volume_mode);
6951 } else {
6952 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER,
6953 "using user-supplied volume_mode=%d\n",
6954 volume_mode);
6955 }
6956
6957 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER,
a112ceee
HMH		 6958 "mute is supported, volume control is %s\n",
6959 str_supported(!tp_features.mixer_no_level_control));
329e4e18 6960
0d204c34
HMH		 6961 rc = volume_create_alsa_mixer();
6962 if (rc) {
0978e012 6963 pr_err("Could not create the ALSA mixer interface\n");
0d204c34
HMH		 6964 return rc;
6965 }
6966
0978e012 6967 pr_info("Console audio control enabled, mode: %s\n",
c7ac6291
HMH		 6968 (volume_control_allowed) ?
6969 "override (read/write)" :
6970 "monitor (read only)");
6971
0d204c34
HMH		 6972 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER,
6973 "registering volume hotkeys as change notification\n");
6974 tpacpi_hotkey_driver_mask_set(hotkey_driver_mask
6975 | TP_ACPI_HKEY_VOLUP_MASK
6976 | TP_ACPI_HKEY_VOLDWN_MASK
6977 | TP_ACPI_HKEY_MUTE_MASK);
6978
329e4e18
HMH		 6979 return 0;
6980}
f74a27d4 6981
887965e6 6982static int volume_read(struct seq_file *m)
78f81cc4 6983{
329e4e18 6984 u8 status;
78f81cc4 6985
329e4e18 6986 if (volume_get_status(&status) < 0) {
887965e6 6987 seq_printf(m, "level:\t\tunreadable\n");
78f81cc4 6988 } else {
a112ceee 6989 if (tp_features.mixer_no_level_control)
887965e6 6990 seq_printf(m, "level:\t\tunsupported\n");
a112ceee 6991 else
887965e6 6992 seq_printf(m, "level:\t\t%d\n",
a112ceee
HMH		 6993 status & TP_EC_AUDIO_LVL_MSK);
6994
887965e6 6995 seq_printf(m, "mute:\t\t%s\n",
329e4e18 6996 onoff(status, TP_EC_AUDIO_MUTESW));
a112ceee 6997
c7ac6291 6998 if (volume_control_allowed) {
887965e6 6999 seq_printf(m, "commands:\tunmute, mute\n");
c7ac6291 7000 if (!tp_features.mixer_no_level_control) {
887965e6 7001 seq_printf(m,
c7ac6291 7002 "commands:\tup, down\n");
887965e6 7003 seq_printf(m,
c7ac6291
HMH		 7004 "commands:\tlevel <level>"
7005 " (<level> is 0-%d)\n",
7006 TP_EC_VOLUME_MAX);
7007 }
78f81cc4
BD		 7008 }
7009 }
7010
7011 return 0;
7012}
7013
78f81cc4
BD		 7014static int volume_write(char *buf)
7015{
329e4e18
HMH		 7016 u8 s;
7017 u8 new_level, new_mute;
7018 int l;
78f81cc4 7019 char *cmd;
329e4e18 7020 int rc;
78f81cc4 7021
c7ac6291
HMH		 7022 /*
7023 * We do allow volume control at driver startup, so that the
7024 * user can set initial state through the volume=... parameter hack.
7025 */
7026 if (!volume_control_allowed && tpacpi_lifecycle != TPACPI_LIFE_INIT) {
7027 if (unlikely(!tp_warned.volume_ctrl_forbidden)) {
7028 tp_warned.volume_ctrl_forbidden = 1;
0978e012
JP		 7029 pr_notice("Console audio control in monitor mode, "
7030 "changes are not allowed\n");
7031 pr_notice("Use the volume_control=1 module parameter "
7032 "to enable volume control\n");
c7ac6291
HMH		 7033 }
7034 return -EPERM;
7035 }
7036
329e4e18
HMH		 7037 rc = volume_get_status(&s);
7038 if (rc < 0)
7039 return rc;
78f81cc4 7040
329e4e18
HMH		 7041 new_level = s & TP_EC_AUDIO_LVL_MSK;
7042 new_mute = s & TP_EC_AUDIO_MUTESW_MSK;
7043
7044 while ((cmd = next_cmd(&buf))) {
a112ceee
HMH		 7045 if (!tp_features.mixer_no_level_control) {
7046 if (strlencmp(cmd, "up") == 0) {
7047 if (new_mute)
7048 new_mute = 0;
7049 else if (new_level < TP_EC_VOLUME_MAX)
7050 new_level++;
7051 continue;
7052 } else if (strlencmp(cmd, "down") == 0) {
7053 if (new_mute)
7054 new_mute = 0;
7055 else if (new_level > 0)
7056 new_level--;
7057 continue;
7058 } else if (sscanf(cmd, "level %u", &l) == 1 &&
7059 l >= 0 && l <= TP_EC_VOLUME_MAX) {
7060 new_level = l;
7061 continue;
7062 }
7063 }
7064 if (strlencmp(cmd, "mute") == 0)
329e4e18 7065 new_mute = TP_EC_AUDIO_MUTESW_MSK;
a112ceee
HMH		 7066 else if (strlencmp(cmd, "unmute") == 0)
7067 new_mute = 0;
7068 else
1da177e4 7069 return -EINVAL;
329e4e18 7070 }
1da177e4 7071
a112ceee
HMH		 7072 if (tp_features.mixer_no_level_control) {
7073 tpacpi_disclose_usertask("procfs volume", "%smute\n",
7074 new_mute ? "" : "un");
7075 rc = volume_set_mute(!!new_mute);
7076 } else {
7077 tpacpi_disclose_usertask("procfs volume",
7078 "%smute and set level to %d\n",
7079 new_mute ? "" : "un", new_level);
7080 rc = volume_set_status(new_mute | new_level);
7081 }
0d204c34 7082 volume_alsa_notify_change();
78f81cc4 7083
329e4e18 7084 return (rc == -EINTR) ? -ERESTARTSYS : rc;
78f81cc4
BD		 7085}
7086
a5763f22
HMH		 7087static struct ibm_struct volume_driver_data = {
7088 .name = "volume",
7089 .read = volume_read,
7090 .write = volume_write,
329e4e18
HMH		 7091 .exit = volume_exit,
7092 .suspend = volume_suspend,
0d204c34 7093 .resume = volume_resume,
329e4e18 7094 .shutdown = volume_shutdown,
a5763f22 7095};
56b6aeb0 7096
ff850c33
HMH		 7097#else /* !CONFIG_THINKPAD_ACPI_ALSA_SUPPORT */
7098
7099#define alsa_card NULL
7100
7101static void inline volume_alsa_notify_change(void)
7102{
7103}
7104
7105static int __init volume_init(struct ibm_init_struct *iibm)
7106{
0978e012 7107 pr_info("volume: disabled as there is no ALSA support in this kernel\n");
ff850c33
HMH		 7108
7109 return 1;
7110}
7111
7112static struct ibm_struct volume_driver_data = {
7113 .name = "volume",
7114};
7115
7116#endif /* CONFIG_THINKPAD_ACPI_ALSA_SUPPORT */
7117
56b6aeb0
HMH		 7118/*************************************************************************
7119 * Fan subdriver
7120 */
7121
7122/*
7123 * FAN ACCESS MODES
7124 *
efa27145 7125 * TPACPI_FAN_RD_ACPI_GFAN:
56b6aeb0
HMH		 7126 * ACPI GFAN method: returns fan level
7127 *
efa27145 7128 * see TPACPI_FAN_WR_ACPI_SFAN
f51d1a39 7129 * EC 0x2f (HFSP) not available if GFAN exists
56b6aeb0 7130 *
efa27145 7131 * TPACPI_FAN_WR_ACPI_SFAN:
56b6aeb0
HMH		 7132 * ACPI SFAN method: sets fan level, 0 (stop) to 7 (max)
7133 *
f51d1a39
HMH		 7134 * EC 0x2f (HFSP) might be available *for reading*, but do not use
7135 * it for writing.
56b6aeb0 7136 *
efa27145 7137 * TPACPI_FAN_WR_TPEC:
f51d1a39
HMH		 7138 * ThinkPad EC register 0x2f (HFSP): fan control loop mode
7139 * Supported on almost all ThinkPads
56b6aeb0
HMH		 7140 *
7141 * Fan speed changes of any sort (including those caused by the
7142 * disengaged mode) are usually done slowly by the firmware as the
9ddc5b6f 7143 * maximum amount of fan duty cycle change per second seems to be
56b6aeb0
HMH		 7144 * limited.
7145 *
7146 * Reading is not available if GFAN exists.
7147 * Writing is not available if SFAN exists.
7148 *
7149 * Bits
7150 * 7 automatic mode engaged;
7151 * (default operation mode of the ThinkPad)
7152 * fan level is ignored in this mode.
f51d1a39 7153 * 6 full speed mode (takes precedence over bit 7);
56b6aeb0 7154 * not available on all thinkpads. May disable
f51d1a39
HMH		 7155 * the tachometer while the fan controller ramps up
7156 * the speed (which can take up to a few *minutes*).
7157 * Speeds up fan to 100% duty-cycle, which is far above
7158 * the standard RPM levels. It is not impossible that
7159 * it could cause hardware damage.
56b6aeb0
HMH		 7160 * 5-3 unused in some models. Extra bits for fan level
7161 * in others, but still useless as all values above
7162 * 7 map to the same speed as level 7 in these models.
7163 * 2-0 fan level (0..7 usually)
7164 * 0x00 = stop
7165 * 0x07 = max (set when temperatures critical)
7166 * Some ThinkPads may have other levels, see
efa27145 7167 * TPACPI_FAN_WR_ACPI_FANS (X31/X40/X41)
56b6aeb0
HMH		 7168 *
7169 * FIRMWARE BUG: on some models, EC 0x2f might not be initialized at
b595076a 7170 * boot. Apparently the EC does not initialize it, so unless ACPI DSDT
56b6aeb0
HMH		 7171 * does so, its initial value is meaningless (0x07).
7172 *
7173 * For firmware bugs, refer to:
7174 * http://thinkwiki.org/wiki/Embedded_Controller_Firmware#Firmware_Issues
7175 *
7176 * ----
7177 *
7178 * ThinkPad EC register 0x84 (LSB), 0x85 (MSB):
7179 * Main fan tachometer reading (in RPM)
7180 *
7181 * This register is present on all ThinkPads with a new-style EC, and
7182 * it is known not to be present on the A21m/e, and T22, as there is
7183 * something else in offset 0x84 according to the ACPI DSDT. Other
7184 * ThinkPads from this same time period (and earlier) probably lack the
7185 * tachometer as well.
7186 *
877d0310 7187 * Unfortunately a lot of ThinkPads with new-style ECs but whose firmware
56b6aeb0
HMH		 7188 * was never fixed by IBM to report the EC firmware version string
7189 * probably support the tachometer (like the early X models), so
7190 * detecting it is quite hard. We need more data to know for sure.
7191 *
7192 * FIRMWARE BUG: always read 0x84 first, otherwise incorrect readings
7193 * might result.
7194 *
f51d1a39
HMH		 7195 * FIRMWARE BUG: may go stale while the EC is switching to full speed
7196 * mode.
56b6aeb0
HMH		 7197 *
7198 * For firmware bugs, refer to:
7199 * http://thinkwiki.org/wiki/Embedded_Controller_Firmware#Firmware_Issues
7200 *
d7377247
HMH		 7201 * ----
7202 *
7203 * ThinkPad EC register 0x31 bit 0 (only on select models)
7204 *
7205 * When bit 0 of EC register 0x31 is zero, the tachometer registers
7206 * show the speed of the main fan. When bit 0 of EC register 0x31
7207 * is one, the tachometer registers show the speed of the auxiliary
7208 * fan.
7209 *
7210 * Fan control seems to affect both fans, regardless of the state
7211 * of this bit.
7212 *
7213 * So far, only the firmware for the X60/X61 non-tablet versions
7214 * seem to support this (firmware TP-7M).
7215 *
efa27145 7216 * TPACPI_FAN_WR_ACPI_FANS:
56b6aeb0
HMH		 7217 * ThinkPad X31, X40, X41. Not available in the X60.
7218 *
7219 * FANS ACPI handle: takes three arguments: low speed, medium speed,
7220 * high speed. ACPI DSDT seems to map these three speeds to levels
7221 * as follows: STOP LOW LOW MED MED HIGH HIGH HIGH HIGH
7222 * (this map is stored on FAN0..FAN8 as "0,1,1,2,2,3,3,3,3")
7223 *
7224 * The speeds are stored on handles
7225 * (FANA:FAN9), (FANC:FANB), (FANE:FAND).
7226 *
af901ca1 7227 * There are three default speed sets, accessible as handles:
56b6aeb0
HMH		 7228 * FS1L,FS1M,FS1H; FS2L,FS2M,FS2H; FS3L,FS3M,FS3H
7229 *
7230 * ACPI DSDT switches which set is in use depending on various
7231 * factors.
7232 *
efa27145 7233 * TPACPI_FAN_WR_TPEC is also available and should be used to
56b6aeb0
HMH		 7234 * command the fan. The X31/X40/X41 seems to have 8 fan levels,
7235 * but the ACPI tables just mention level 7.
7236 */
7237
f74a27d4
HMH		 7238enum { /* Fan control constants */
7239 fan_status_offset = 0x2f, /* EC register 0x2f */
7240 fan_rpm_offset = 0x84, /* EC register 0x84: LSB, 0x85 MSB (RPM)
7241 * 0x84 must be read before 0x85 */
d7377247
HMH		 7242 fan_select_offset = 0x31, /* EC register 0x31 (Firmware 7M)
7243 bit 0 selects which fan is active */
f74a27d4
HMH		 7244
7245 TP_EC_FAN_FULLSPEED = 0x40, /* EC fan mode: full speed */
7246 TP_EC_FAN_AUTO = 0x80, /* EC fan mode: auto fan control */
7247
7248 TPACPI_FAN_LAST_LEVEL = 0x100, /* Use cached last-seen fan level */
7249};
7250
7251enum fan_status_access_mode {
7252 TPACPI_FAN_NONE = 0, /* No fan status or control */
7253 TPACPI_FAN_RD_ACPI_GFAN, /* Use ACPI GFAN */
7254 TPACPI_FAN_RD_TPEC, /* Use ACPI EC regs 0x2f, 0x84-0x85 */
7255};
7256
7257enum fan_control_access_mode {
7258 TPACPI_FAN_WR_NONE = 0, /* No fan control */
7259 TPACPI_FAN_WR_ACPI_SFAN, /* Use ACPI SFAN */
7260 TPACPI_FAN_WR_TPEC, /* Use ACPI EC reg 0x2f */
7261 TPACPI_FAN_WR_ACPI_FANS, /* Use ACPI FANS and EC reg 0x2f */
7262};
7263
7264enum fan_control_commands {
7265 TPACPI_FAN_CMD_SPEED = 0x0001, /* speed command */
7266 TPACPI_FAN_CMD_LEVEL = 0x0002, /* level command */
7267 TPACPI_FAN_CMD_ENABLE = 0x0004, /* enable/disable cmd,
7268 * and also watchdog cmd */
7269};
7270
7271static int fan_control_allowed;
7272
69ba91cb
HMH		 7273static enum fan_status_access_mode fan_status_access_mode;
7274static enum fan_control_access_mode fan_control_access_mode;
7275static enum fan_control_commands fan_control_commands;
78f81cc4 7276
778b4d74 7277static u8 fan_control_initial_status;
fe98a52c 7278static u8 fan_control_desired_level;
0081b162 7279static u8 fan_control_resume_level;
f74a27d4
HMH		 7280static int fan_watchdog_maxinterval;
7281
7282static struct mutex fan_mutex;
778b4d74 7283
25c68a33 7284static void fan_watchdog_fire(struct work_struct *ignored);
25c68a33 7285static DECLARE_DELAYED_WORK(fan_watchdog_task, fan_watchdog_fire);
16663a87 7286
e0c7dfe7
HMH		 7287TPACPI_HANDLE(fans, ec, "FANS"); /* X31, X40, X41 */
7288TPACPI_HANDLE(gfan, ec, "GFAN", /* 570 */
56b6aeb0
HMH		 7289 "\\FSPD", /* 600e/x, 770e, 770x */
7290 ); /* all others */
e0c7dfe7 7291TPACPI_HANDLE(sfan, ec, "SFAN", /* 570 */
56b6aeb0
HMH		 7292 "JFNS", /* 770x-JL */
7293 ); /* all others */
7294
1c2ece75
HMH		 7295/*
7296 * Unitialized HFSP quirk: ACPI DSDT and EC fail to initialize the
7297 * HFSP register at boot, so it contains 0x07 but the Thinkpad could
7298 * be in auto mode (0x80).
7299 *
7300 * This is corrected by any write to HFSP either by the driver, or
7301 * by the firmware.
7302 *
7303 * We assume 0x07 really means auto mode while this quirk is active,
7304 * as this is far more likely than the ThinkPad being in level 7,
7305 * which is only used by the firmware during thermal emergencies.
7d95a3d5
HMH		 7306 *
7307 * Enable for TP-1Y (T43), TP-78 (R51e), TP-76 (R52),
7308 * TP-70 (T43, R52), which are known to be buggy.
1c2ece75
HMH		 7309 */
7310
7d95a3d5 7311static void fan_quirk1_setup(void)
1c2ece75 7312{
1c2ece75 7313 if (fan_control_initial_status == 0x07) {
0978e012
JP		 7314 pr_notice("fan_init: initial fan status is unknown, "
7315 "assuming it is in auto mode\n");
7d95a3d5 7316 tp_features.fan_ctrl_status_undef = 1;
1c2ece75
HMH		 7317 }
7318}
7319
7320static void fan_quirk1_handle(u8 *fan_status)
7321{
7322 if (unlikely(tp_features.fan_ctrl_status_undef)) {
7323 if (*fan_status != fan_control_initial_status) {
7324 /* something changed the HFSP regisnter since
7325 * driver init time, so it is not undefined
7326 * anymore */
7327 tp_features.fan_ctrl_status_undef = 0;
7328 } else {
7329 /* Return most likely status. In fact, it
7330 * might be the only possible status */
7331 *fan_status = TP_EC_FAN_AUTO;
7332 }
7333 }
7334}
7335
d7377247
HMH		 7336/* Select main fan on X60/X61, NOOP on others */
7337static bool fan_select_fan1(void)
7338{
7339 if (tp_features.second_fan) {
7340 u8 val;
7341
7342 if (ec_read(fan_select_offset, &val) < 0)
7343 return false;
7344 val &= 0xFEU;
7345 if (ec_write(fan_select_offset, val) < 0)
7346 return false;
7347 }
7348 return true;
7349}
7350
7351/* Select secondary fan on X60/X61 */
7352static bool fan_select_fan2(void)
7353{
7354 u8 val;
7355
7356 if (!tp_features.second_fan)
7357 return false;
7358
7359 if (ec_read(fan_select_offset, &val) < 0)
7360 return false;
7361 val |= 0x01U;
7362 if (ec_write(fan_select_offset, val) < 0)
7363 return false;
7364
7365 return true;
7366}
7367
fe98a52c 7368/*
b21a15f6 7369 * Call with fan_mutex held
fe98a52c 7370 */
b21a15f6 7371static void fan_update_desired_level(u8 status)
fe98a52c 7372{
b21a15f6
HMH		 7373 if ((status &
7374 (TP_EC_FAN_AUTO | TP_EC_FAN_FULLSPEED)) == 0) {
7375 if (status > 7)
7376 fan_control_desired_level = 7;
7377 else
7378 fan_control_desired_level = status;
7379 }
7380}
fe98a52c 7381
b21a15f6
HMH		 7382static int fan_get_status(u8 *status)
7383{
7384 u8 s;
fe98a52c 7385
b21a15f6
HMH		 7386 /* TODO:
7387 * Add TPACPI_FAN_RD_ACPI_FANS ? */
fe98a52c 7388
b21a15f6
HMH		 7389 switch (fan_status_access_mode) {
7390 case TPACPI_FAN_RD_ACPI_GFAN:
7391 /* 570, 600e/x, 770e, 770x */
fe98a52c 7392
b21a15f6
HMH		 7393 if (unlikely(!acpi_evalf(gfan_handle, &s, NULL, "d")))
7394 return -EIO;
fe98a52c 7395
b21a15f6
HMH		 7396 if (likely(status))
7397 *status = s & 0x07;
fe98a52c 7398
b21a15f6
HMH		 7399 break;
7400
7401 case TPACPI_FAN_RD_TPEC:
7402 /* all except 570, 600e/x, 770e, 770x */
7403 if (unlikely(!acpi_ec_read(fan_status_offset, &s)))
7404 return -EIO;
7405
1c2ece75 7406 if (likely(status)) {
b21a15f6 7407 *status = s;
1c2ece75
HMH		 7408 fan_quirk1_handle(status);
7409 }
fe98a52c 7410
fe98a52c 7411 break;
b21a15f6 7412
fe98a52c 7413 default:
b21a15f6 7414 return -ENXIO;
fe98a52c
HMH		 7415 }
7416
b21a15f6
HMH		 7417 return 0;
7418}
fe98a52c 7419
b21a15f6
HMH		 7420static int fan_get_status_safe(u8 *status)
7421{
7422 int rc;
7423 u8 s;
fe98a52c 7424
7646ea88 7425 if (mutex_lock_killable(&fan_mutex))
b21a15f6
HMH		 7426 return -ERESTARTSYS;
7427 rc = fan_get_status(&s);
7428 if (!rc)
7429 fan_update_desired_level(s);
7430 mutex_unlock(&fan_mutex);
fe98a52c 7431
b21a15f6
HMH		 7432 if (status)
7433 *status = s;
fe98a52c 7434
b21a15f6
HMH		 7435 return rc;
7436}
7437
7438static int fan_get_speed(unsigned int *speed)
fe98a52c 7439{
b21a15f6 7440 u8 hi, lo;
fe98a52c 7441
b21a15f6
HMH		 7442 switch (fan_status_access_mode) {
7443 case TPACPI_FAN_RD_TPEC:
7444 /* all except 570, 600e/x, 770e, 770x */
d7377247
HMH		 7445 if (unlikely(!fan_select_fan1()))
7446 return -EIO;
b21a15f6
HMH		 7447 if (unlikely(!acpi_ec_read(fan_rpm_offset, &lo) ||
7448 !acpi_ec_read(fan_rpm_offset + 1, &hi)))
7449 return -EIO;
fe98a52c 7450
b21a15f6
HMH		 7451 if (likely(speed))
7452 *speed = (hi << 8) | lo;
fe98a52c 7453
b21a15f6 7454 break;
fe98a52c 7455
b21a15f6
HMH		 7456 default:
7457 return -ENXIO;
7458 }
fe98a52c 7459
b21a15f6 7460 return 0;
fe98a52c
HMH		 7461}
7462
d7377247
HMH		 7463static int fan2_get_speed(unsigned int *speed)
7464{
7465 u8 hi, lo;
7466 bool rc;
7467
7468 switch (fan_status_access_mode) {
7469 case TPACPI_FAN_RD_TPEC:
7470 /* all except 570, 600e/x, 770e, 770x */
7471 if (unlikely(!fan_select_fan2()))
7472 return -EIO;
7473 rc = !acpi_ec_read(fan_rpm_offset, &lo) ||
7474 !acpi_ec_read(fan_rpm_offset + 1, &hi);
7475 fan_select_fan1(); /* play it safe */
7476 if (rc)
7477 return -EIO;
7478
7479 if (likely(speed))
7480 *speed = (hi << 8) | lo;
7481
7482 break;
7483
7484 default:
7485 return -ENXIO;
7486 }
7487
7488 return 0;
7489}
7490
b21a15f6 7491static int fan_set_level(int level)
fe98a52c 7492{
b21a15f6
HMH		 7493 if (!fan_control_allowed)
7494 return -EPERM;
fe98a52c 7495
b21a15f6
HMH		 7496 switch (fan_control_access_mode) {
7497 case TPACPI_FAN_WR_ACPI_SFAN:
7498 if (level >= 0 && level <= 7) {
7499 if (!acpi_evalf(sfan_handle, NULL, NULL, "vd", level))
7500 return -EIO;
7501 } else
7502 return -EINVAL;
7503 break;
fe98a52c 7504
b21a15f6
HMH		 7505 case TPACPI_FAN_WR_ACPI_FANS:
7506 case TPACPI_FAN_WR_TPEC:
0081b162
HMH		 7507 if (!(level & TP_EC_FAN_AUTO) &&
7508 !(level & TP_EC_FAN_FULLSPEED) &&
b21a15f6
HMH		 7509 ((level < 0) || (level > 7)))
7510 return -EINVAL;
fe98a52c 7511
b21a15f6
HMH		 7512 /* safety net should the EC not support AUTO
7513 * or FULLSPEED mode bits and just ignore them */
7514 if (level & TP_EC_FAN_FULLSPEED)
7515 level |= 7; /* safety min speed 7 */
547266e4 7516 else if (level & TP_EC_FAN_AUTO)
b21a15f6 7517 level |= 4; /* safety min speed 4 */
fe98a52c 7518
b21a15f6
HMH		 7519 if (!acpi_ec_write(fan_status_offset, level))
7520 return -EIO;
7521 else
7522 tp_features.fan_ctrl_status_undef = 0;
7523 break;
fe98a52c 7524
b21a15f6
HMH		 7525 default:
7526 return -ENXIO;
7527 }
74a60c0f
HMH		 7528
7529 vdbg_printk(TPACPI_DBG_FAN,
7530 "fan control: set fan control register to 0x%02x\n", level);
b21a15f6 7531 return 0;
fe98a52c
HMH		 7532}
7533
b21a15f6 7534static int fan_set_level_safe(int level)
fe98a52c 7535{
b21a15f6 7536 int rc;
fe98a52c 7537
b21a15f6
HMH		 7538 if (!fan_control_allowed)
7539 return -EPERM;
fe98a52c 7540
7646ea88 7541 if (mutex_lock_killable(&fan_mutex))
b21a15f6 7542 return -ERESTARTSYS;
fe98a52c 7543
b21a15f6
HMH		 7544 if (level == TPACPI_FAN_LAST_LEVEL)
7545 level = fan_control_desired_level;
fe98a52c 7546
b21a15f6
HMH		 7547 rc = fan_set_level(level);
7548 if (!rc)
7549 fan_update_desired_level(level);
7550
7551 mutex_unlock(&fan_mutex);
7552 return rc;
fe98a52c
HMH		 7553}
7554
b21a15f6 7555static int fan_set_enable(void)
fe98a52c 7556{
b21a15f6
HMH		 7557 u8 s;
7558 int rc;
fe98a52c 7559
ecf2a80a
HMH		 7560 if (!fan_control_allowed)
7561 return -EPERM;
7562
7646ea88 7563 if (mutex_lock_killable(&fan_mutex))
b21a15f6 7564 return -ERESTARTSYS;
fe98a52c 7565
b21a15f6
HMH		 7566 switch (fan_control_access_mode) {
7567 case TPACPI_FAN_WR_ACPI_FANS:
7568 case TPACPI_FAN_WR_TPEC:
7569 rc = fan_get_status(&s);
7570 if (rc < 0)
7571 break;
fe98a52c 7572
b21a15f6
HMH		 7573 /* Don't go out of emergency fan mode */
7574 if (s != 7) {
7575 s &= 0x07;
7576 s |= TP_EC_FAN_AUTO | 4; /* min fan speed 4 */
7577 }
fe98a52c 7578
b21a15f6
HMH		 7579 if (!acpi_ec_write(fan_status_offset, s))
7580 rc = -EIO;
7581 else {
7582 tp_features.fan_ctrl_status_undef = 0;
7583 rc = 0;
7584 }
7585 break;
fe98a52c 7586
b21a15f6
HMH		 7587 case TPACPI_FAN_WR_ACPI_SFAN:
7588 rc = fan_get_status(&s);
7589 if (rc < 0)
7590 break;
fe98a52c 7591
b21a15f6 7592 s &= 0x07;
fe98a52c 7593
b21a15f6
HMH		 7594 /* Set fan to at least level 4 */
7595 s |= 4;
fe08bc4b 7596
b21a15f6 7597 if (!acpi_evalf(sfan_handle, NULL, NULL, "vd", s))
35ff8b9f 7598 rc = -EIO;
b21a15f6
HMH		 7599 else
7600 rc = 0;
7601 break;
78f81cc4 7602
b21a15f6
HMH		 7603 default:
7604 rc = -ENXIO;
7605 }
5fba344c 7606
b21a15f6 7607 mutex_unlock(&fan_mutex);
74a60c0f
HMH		 7608
7609 if (!rc)
7610 vdbg_printk(TPACPI_DBG_FAN,
7611 "fan control: set fan control register to 0x%02x\n",
7612 s);
b21a15f6 7613 return rc;
69ba91cb 7614}
78f81cc4 7615
b21a15f6 7616static int fan_set_disable(void)
78f81cc4 7617{
b21a15f6 7618 int rc;
c52f0aa5 7619
b21a15f6
HMH		 7620 if (!fan_control_allowed)
7621 return -EPERM;
78f81cc4 7622
7646ea88 7623 if (mutex_lock_killable(&fan_mutex))
b21a15f6 7624 return -ERESTARTSYS;
3ef8a609 7625
b21a15f6
HMH		 7626 rc = 0;
7627 switch (fan_control_access_mode) {
7628 case TPACPI_FAN_WR_ACPI_FANS:
7629 case TPACPI_FAN_WR_TPEC:
7630 if (!acpi_ec_write(fan_status_offset, 0x00))
7631 rc = -EIO;
7632 else {
7633 fan_control_desired_level = 0;
7634 tp_features.fan_ctrl_status_undef = 0;
7635 }
3ef8a609
HMH		 7636 break;
7637
b21a15f6
HMH		 7638 case TPACPI_FAN_WR_ACPI_SFAN:
7639 if (!acpi_evalf(sfan_handle, NULL, NULL, "vd", 0x00))
7640 rc = -EIO;
7641 else
7642 fan_control_desired_level = 0;
c52f0aa5
HMH		 7643 break;
7644
7645 default:
b21a15f6 7646 rc = -ENXIO;
78f81cc4
BD		 7647 }
7648
74a60c0f
HMH		 7649 if (!rc)
7650 vdbg_printk(TPACPI_DBG_FAN,
7651 "fan control: set fan control register to 0\n");
fe98a52c 7652
fe98a52c 7653 mutex_unlock(&fan_mutex);
fe98a52c
HMH		 7654 return rc;
7655}
7656
b21a15f6 7657static int fan_set_speed(int speed)
c52f0aa5 7658{
b21a15f6 7659 int rc;
c52f0aa5 7660
b21a15f6
HMH		 7661 if (!fan_control_allowed)
7662 return -EPERM;
3ef8a609 7663
7646ea88 7664 if (mutex_lock_killable(&fan_mutex))
b21a15f6 7665 return -ERESTARTSYS;
c52f0aa5 7666
b21a15f6
HMH		 7667 rc = 0;
7668 switch (fan_control_access_mode) {
7669 case TPACPI_FAN_WR_ACPI_FANS:
7670 if (speed >= 0 && speed <= 65535) {
7671 if (!acpi_evalf(fans_handle, NULL, NULL, "vddd",
7672 speed, speed, speed))
7673 rc = -EIO;
7674 } else
7675 rc = -EINVAL;
c52f0aa5
HMH		 7676 break;
7677
7678 default:
b21a15f6 7679 rc = -ENXIO;
c52f0aa5
HMH		 7680 }
7681
b21a15f6
HMH		 7682 mutex_unlock(&fan_mutex);
7683 return rc;
16663a87
HMH		 7684}
7685
7686static void fan_watchdog_reset(void)
7687{
94954cc6 7688 static int fan_watchdog_active;
16663a87 7689
4985cd0a
HMH		 7690 if (fan_control_access_mode == TPACPI_FAN_WR_NONE)
7691 return;
7692
16663a87
HMH		 7693 if (fan_watchdog_active)
7694 cancel_delayed_work(&fan_watchdog_task);
7695
8fef502e
HMH		 7696 if (fan_watchdog_maxinterval > 0 &&
7697 tpacpi_lifecycle != TPACPI_LIFE_EXITING) {
16663a87 7698 fan_watchdog_active = 1;
e0e3c061 7699 if (!queue_delayed_work(tpacpi_wq, &fan_watchdog_task,
16663a87
HMH		 7700 msecs_to_jiffies(fan_watchdog_maxinterval
7701 * 1000))) {
0978e012 7702 pr_err("failed to queue the fan watchdog, "
16663a87
HMH		 7703 "watchdog will not trigger\n");
7704 }
7705 } else
7706 fan_watchdog_active = 0;
7707}
7708
b21a15f6 7709static void fan_watchdog_fire(struct work_struct *ignored)
78f81cc4 7710{
b21a15f6 7711 int rc;
18ad7996 7712
b21a15f6
HMH		 7713 if (tpacpi_lifecycle != TPACPI_LIFE_RUNNING)
7714 return;
a12095c2 7715
0978e012 7716 pr_notice("fan watchdog: enabling fan\n");
b21a15f6
HMH		 7717 rc = fan_set_enable();
7718 if (rc < 0) {
0978e012
JP		 7719 pr_err("fan watchdog: error %d while enabling fan, "
7720 "will try again later...\n", -rc);
b21a15f6
HMH		 7721 /* reschedule for later */
7722 fan_watchdog_reset();
7723 }
7724}
eaa7571b 7725
b21a15f6
HMH		 7726/*
7727 * SYSFS fan layout: hwmon compatible (device)
7728 *
7729 * pwm*_enable:
7730 * 0: "disengaged" mode
7731 * 1: manual mode
7732 * 2: native EC "auto" mode (recommended, hardware default)
7733 *
7734 * pwm*: set speed in manual mode, ignored otherwise.
7735 * 0 is level 0; 255 is level 7. Intermediate points done with linear
7736 * interpolation.
7737 *
7738 * fan*_input: tachometer reading, RPM
7739 *
7740 *
7741 * SYSFS fan layout: extensions
7742 *
7743 * fan_watchdog (driver):
7744 * fan watchdog interval in seconds, 0 disables (default), max 120
7745 */
7746
7747/* sysfs fan pwm1_enable ----------------------------------------------- */
7748static ssize_t fan_pwm1_enable_show(struct device *dev,
7749 struct device_attribute *attr,
7750 char *buf)
7751{
7752 int res, mode;
7753 u8 status;
7754
7755 res = fan_get_status_safe(&status);
7756 if (res)
7757 return res;
7758
b21a15f6
HMH		 7759 if (status & TP_EC_FAN_FULLSPEED) {
7760 mode = 0;
7761 } else if (status & TP_EC_FAN_AUTO) {
7762 mode = 2;
7763 } else
7764 mode = 1;
7765
7766 return snprintf(buf, PAGE_SIZE, "%d\n", mode);
7767}
a12095c2 7768
b21a15f6
HMH		 7769static ssize_t fan_pwm1_enable_store(struct device *dev,
7770 struct device_attribute *attr,
7771 const char *buf, size_t count)
7772{
7773 unsigned long t;
7774 int res, level;
7775
7776 if (parse_strtoul(buf, 2, &t))
7777 return -EINVAL;
7778
74a60c0f
HMH		 7779 tpacpi_disclose_usertask("hwmon pwm1_enable",
7780 "set fan mode to %lu\n", t);
7781
b21a15f6
HMH		 7782 switch (t) {
7783 case 0:
7784 level = TP_EC_FAN_FULLSPEED;
7785 break;
7786 case 1:
7787 level = TPACPI_FAN_LAST_LEVEL;
7788 break;
7789 case 2:
7790 level = TP_EC_FAN_AUTO;
7791 break;
7792 case 3:
7793 /* reserved for software-controlled auto mode */
7794 return -ENOSYS;
18ad7996 7795 default:
b21a15f6 7796 return -EINVAL;
18ad7996 7797 }
b21a15f6
HMH		 7798
7799 res = fan_set_level_safe(level);
7800 if (res == -ENXIO)
7801 return -EINVAL;
7802 else if (res < 0)
7803 return res;
7804
7805 fan_watchdog_reset();
7806
7807 return count;
18ad7996
HMH		 7808}
7809
b21a15f6
HMH		 7810static struct device_attribute dev_attr_fan_pwm1_enable =
7811 __ATTR(pwm1_enable, S_IWUSR | S_IRUGO,
7812 fan_pwm1_enable_show, fan_pwm1_enable_store);
7813
7814/* sysfs fan pwm1 ------------------------------------------------------ */
7815static ssize_t fan_pwm1_show(struct device *dev,
7816 struct device_attribute *attr,
7817 char *buf)
fe98a52c 7818{
b21a15f6
HMH		 7819 int res;
7820 u8 status;
fe98a52c 7821
b21a15f6
HMH		 7822 res = fan_get_status_safe(&status);
7823 if (res)
7824 return res;
ecf2a80a 7825
b21a15f6
HMH		 7826 if ((status &
7827 (TP_EC_FAN_AUTO | TP_EC_FAN_FULLSPEED)) != 0)
7828 status = fan_control_desired_level;
fe98a52c 7829
b21a15f6
HMH		 7830 if (status > 7)
7831 status = 7;
fe98a52c 7832
b21a15f6 7833 return snprintf(buf, PAGE_SIZE, "%u\n", (status * 255) / 7);
fe98a52c
HMH		 7834}
7835
b21a15f6
HMH		 7836static ssize_t fan_pwm1_store(struct device *dev,
7837 struct device_attribute *attr,
7838 const char *buf, size_t count)
18ad7996 7839{
b21a15f6 7840 unsigned long s;
1c6a334e 7841 int rc;
b21a15f6 7842 u8 status, newlevel;
1c6a334e 7843
b21a15f6
HMH		 7844 if (parse_strtoul(buf, 255, &s))
7845 return -EINVAL;
7846
74a60c0f
HMH		 7847 tpacpi_disclose_usertask("hwmon pwm1",
7848 "set fan speed to %lu\n", s);
7849
b21a15f6
HMH		 7850 /* scale down from 0-255 to 0-7 */
7851 newlevel = (s >> 5) & 0x07;
ecf2a80a 7852
7646ea88 7853 if (mutex_lock_killable(&fan_mutex))
fc589a3c 7854 return -ERESTARTSYS;
40ca9fdf 7855
b21a15f6
HMH		 7856 rc = fan_get_status(&status);
7857 if (!rc && (status &
7858 (TP_EC_FAN_AUTO | TP_EC_FAN_FULLSPEED)) == 0) {
7859 rc = fan_set_level(newlevel);
7860 if (rc == -ENXIO)
7861 rc = -EINVAL;
7862 else if (!rc) {
7863 fan_update_desired_level(newlevel);
7864 fan_watchdog_reset();
eaa7571b 7865 }
b21a15f6 7866 }
1c6a334e 7867
b21a15f6
HMH		 7868 mutex_unlock(&fan_mutex);
7869 return (rc)? rc : count;
7870}
1c6a334e 7871
b21a15f6
HMH		 7872static struct device_attribute dev_attr_fan_pwm1 =
7873 __ATTR(pwm1, S_IWUSR | S_IRUGO,
7874 fan_pwm1_show, fan_pwm1_store);
1c6a334e 7875
b21a15f6
HMH		 7876/* sysfs fan fan1_input ------------------------------------------------ */
7877static ssize_t fan_fan1_input_show(struct device *dev,
7878 struct device_attribute *attr,
7879 char *buf)
7880{
7881 int res;
7882 unsigned int speed;
1c6a334e 7883
b21a15f6
HMH		 7884 res = fan_get_speed(&speed);
7885 if (res < 0)
7886 return res;
1c6a334e 7887
b21a15f6
HMH		 7888 return snprintf(buf, PAGE_SIZE, "%u\n", speed);
7889}
18ad7996 7890
b21a15f6
HMH		 7891static struct device_attribute dev_attr_fan_fan1_input =
7892 __ATTR(fan1_input, S_IRUGO,
7893 fan_fan1_input_show, NULL);
40ca9fdf 7894
d7377247
HMH		 7895/* sysfs fan fan2_input ------------------------------------------------ */
7896static ssize_t fan_fan2_input_show(struct device *dev,
7897 struct device_attribute *attr,
7898 char *buf)
7899{
7900 int res;
7901 unsigned int speed;
7902
7903 res = fan2_get_speed(&speed);
7904 if (res < 0)
7905 return res;
7906
7907 return snprintf(buf, PAGE_SIZE, "%u\n", speed);
7908}
7909
7910static struct device_attribute dev_attr_fan_fan2_input =
7911 __ATTR(fan2_input, S_IRUGO,
7912 fan_fan2_input_show, NULL);
7913
b21a15f6
HMH		 7914/* sysfs fan fan_watchdog (hwmon driver) ------------------------------- */
7915static ssize_t fan_fan_watchdog_show(struct device_driver *drv,
7916 char *buf)
7917{
7918 return snprintf(buf, PAGE_SIZE, "%u\n", fan_watchdog_maxinterval);
18ad7996
HMH		 7919}
7920
b21a15f6
HMH		 7921static ssize_t fan_fan_watchdog_store(struct device_driver *drv,
7922 const char *buf, size_t count)
18ad7996 7923{
b21a15f6
HMH		 7924 unsigned long t;
7925
7926 if (parse_strtoul(buf, 120, &t))
7927 return -EINVAL;
40ca9fdf 7928
ecf2a80a
HMH		 7929 if (!fan_control_allowed)
7930 return -EPERM;
7931
b21a15f6
HMH		 7932 fan_watchdog_maxinterval = t;
7933 fan_watchdog_reset();
40ca9fdf 7934
74a60c0f
HMH		 7935 tpacpi_disclose_usertask("fan_watchdog", "set to %lu\n", t);
7936
b21a15f6
HMH		 7937 return count;
7938}
7939
7940static DRIVER_ATTR(fan_watchdog, S_IWUSR | S_IRUGO,
7941 fan_fan_watchdog_show, fan_fan_watchdog_store);
7942
7943/* --------------------------------------------------------------------- */
7944static struct attribute *fan_attributes[] = {
7945 &dev_attr_fan_pwm1_enable.attr, &dev_attr_fan_pwm1.attr,
7946 &dev_attr_fan_fan1_input.attr,
d7377247 7947 NULL, /* for fan2_input */
b21a15f6
HMH		 7948 NULL
7949};
7950
7951static const struct attribute_group fan_attr_group = {
7952 .attrs = fan_attributes,
7953};
7954
d7377247
HMH		 7955#define TPACPI_FAN_Q1 0x0001 /* Unitialized HFSP */
7956#define TPACPI_FAN_2FAN 0x0002 /* EC 0x31 bit 0 selects fan2 */
7d95a3d5
HMH		 7957
7958#define TPACPI_FAN_QI(__id1, __id2, __quirks) \
7959 { .vendor = PCI_VENDOR_ID_IBM, \
7960 .bios = TPACPI_MATCH_ANY, \
7961 .ec = TPID(__id1, __id2), \
7962 .quirks = __quirks }
7963
d7377247
HMH		 7964#define TPACPI_FAN_QL(__id1, __id2, __quirks) \
7965 { .vendor = PCI_VENDOR_ID_LENOVO, \
7966 .bios = TPACPI_MATCH_ANY, \
7967 .ec = TPID(__id1, __id2), \
7968 .quirks = __quirks }
7969
7d95a3d5
HMH		 7970static const struct tpacpi_quirk fan_quirk_table[] __initconst = {
7971 TPACPI_FAN_QI('1', 'Y', TPACPI_FAN_Q1),
7972 TPACPI_FAN_QI('7', '8', TPACPI_FAN_Q1),
7973 TPACPI_FAN_QI('7', '6', TPACPI_FAN_Q1),
7974 TPACPI_FAN_QI('7', '0', TPACPI_FAN_Q1),
d7377247 7975 TPACPI_FAN_QL('7', 'M', TPACPI_FAN_2FAN),
7d95a3d5
HMH		 7976};
7977
d7377247 7978#undef TPACPI_FAN_QL
7d95a3d5
HMH		 7979#undef TPACPI_FAN_QI
7980
b21a15f6
HMH		 7981static int __init fan_init(struct ibm_init_struct *iibm)
7982{
7983 int rc;
7d95a3d5 7984 unsigned long quirks;
b21a15f6 7985
74a60c0f
HMH		 7986 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_FAN,
7987 "initializing fan subdriver\n");
b21a15f6
HMH		 7988
7989 mutex_init(&fan_mutex);
7990 fan_status_access_mode = TPACPI_FAN_NONE;
7991 fan_control_access_mode = TPACPI_FAN_WR_NONE;
7992 fan_control_commands = 0;
7993 fan_watchdog_maxinterval = 0;
7994 tp_features.fan_ctrl_status_undef = 0;
d7377247 7995 tp_features.second_fan = 0;
b21a15f6
HMH		 7996 fan_control_desired_level = 7;
7997
e28393c0
HMH		 7998 if (tpacpi_is_ibm()) {
7999 TPACPI_ACPIHANDLE_INIT(fans);
8000 TPACPI_ACPIHANDLE_INIT(gfan);
8001 TPACPI_ACPIHANDLE_INIT(sfan);
8002 }
b21a15f6 8003
7d95a3d5
HMH		 8004 quirks = tpacpi_check_quirks(fan_quirk_table,
8005 ARRAY_SIZE(fan_quirk_table));
8006
b21a15f6
HMH		 8007 if (gfan_handle) {
8008 /* 570, 600e/x, 770e, 770x */
8009 fan_status_access_mode = TPACPI_FAN_RD_ACPI_GFAN;
8010 } else {
8011 /* all other ThinkPads: note that even old-style
8012 * ThinkPad ECs supports the fan control register */
8013 if (likely(acpi_ec_read(fan_status_offset,
8014 &fan_control_initial_status))) {
8015 fan_status_access_mode = TPACPI_FAN_RD_TPEC;
7d95a3d5
HMH		 8016 if (quirks & TPACPI_FAN_Q1)
8017 fan_quirk1_setup();
d7377247
HMH		 8018 if (quirks & TPACPI_FAN_2FAN) {
8019 tp_features.second_fan = 1;
8020 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_FAN,
8021 "secondary fan support enabled\n");
8022 }
b21a15f6 8023 } else {
0978e012 8024 pr_err("ThinkPad ACPI EC access misbehaving, "
b21a15f6
HMH		 8025 "fan status and control unavailable\n");
8026 return 1;
8027 }
8028 }
8029
8030 if (sfan_handle) {
8031 /* 570, 770x-JL */
8032 fan_control_access_mode = TPACPI_FAN_WR_ACPI_SFAN;
8033 fan_control_commands |=
8034 TPACPI_FAN_CMD_LEVEL | TPACPI_FAN_CMD_ENABLE;
8035 } else {
8036 if (!gfan_handle) {
8037 /* gfan without sfan means no fan control */
8038 /* all other models implement TP EC 0x2f control */
8039
8040 if (fans_handle) {
8041 /* X31, X40, X41 */
8042 fan_control_access_mode =
8043 TPACPI_FAN_WR_ACPI_FANS;
8044 fan_control_commands |=
8045 TPACPI_FAN_CMD_SPEED |
8046 TPACPI_FAN_CMD_LEVEL |
8047 TPACPI_FAN_CMD_ENABLE;
8048 } else {
8049 fan_control_access_mode = TPACPI_FAN_WR_TPEC;
8050 fan_control_commands |=
8051 TPACPI_FAN_CMD_LEVEL |
8052 TPACPI_FAN_CMD_ENABLE;
8053 }
fe98a52c 8054 }
b21a15f6 8055 }
18ad7996 8056
74a60c0f
HMH		 8057 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_FAN,
8058 "fan is %s, modes %d, %d\n",
b21a15f6
HMH		 8059 str_supported(fan_status_access_mode != TPACPI_FAN_NONE ||
8060 fan_control_access_mode != TPACPI_FAN_WR_NONE),
8061 fan_status_access_mode, fan_control_access_mode);
1c6a334e 8062
b21a15f6
HMH		 8063 /* fan control master switch */
8064 if (!fan_control_allowed) {
8065 fan_control_access_mode = TPACPI_FAN_WR_NONE;
8066 fan_control_commands = 0;
74a60c0f 8067 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_FAN,
b21a15f6 8068 "fan control features disabled by parameter\n");
18ad7996 8069 }
40ca9fdf 8070
b21a15f6
HMH		 8071 /* update fan_control_desired_level */
8072 if (fan_status_access_mode != TPACPI_FAN_NONE)
8073 fan_get_status_safe(NULL);
fe98a52c 8074
b21a15f6
HMH		 8075 if (fan_status_access_mode != TPACPI_FAN_NONE ||
8076 fan_control_access_mode != TPACPI_FAN_WR_NONE) {
d7377247
HMH		 8077 if (tp_features.second_fan) {
8078 /* attach second fan tachometer */
8079 fan_attributes[ARRAY_SIZE(fan_attributes)-2] =
8080 &dev_attr_fan_fan2_input.attr;
8081 }
b21a15f6
HMH		 8082 rc = sysfs_create_group(&tpacpi_sensors_pdev->dev.kobj,
8083 &fan_attr_group);
b21a15f6
HMH		 8084 if (rc < 0)
8085 return rc;
9c0a76e1
HMH		 8086
8087 rc = driver_create_file(&tpacpi_hwmon_pdriver.driver,
8088 &driver_attr_fan_watchdog);
8089 if (rc < 0) {
8090 sysfs_remove_group(&tpacpi_sensors_pdev->dev.kobj,
8091 &fan_attr_group);
8092 return rc;
8093 }
b21a15f6
HMH		 8094 return 0;
8095 } else
8096 return 1;
56b6aeb0
HMH		 8097}
8098
b21a15f6 8099static void fan_exit(void)
56b6aeb0 8100{
74a60c0f 8101 vdbg_printk(TPACPI_DBG_EXIT | TPACPI_DBG_FAN,
35ff8b9f 8102 "cancelling any pending fan watchdog tasks\n");
56b6aeb0 8103
b21a15f6
HMH		 8104 /* FIXME: can we really do this unconditionally? */
8105 sysfs_remove_group(&tpacpi_sensors_pdev->dev.kobj, &fan_attr_group);
35ff8b9f
HMH		 8106 driver_remove_file(&tpacpi_hwmon_pdriver.driver,
8107 &driver_attr_fan_watchdog);
40ca9fdf 8108
b21a15f6 8109 cancel_delayed_work(&fan_watchdog_task);
e0e3c061 8110 flush_workqueue(tpacpi_wq);
56b6aeb0
HMH		 8111}
8112
75700e53
HMH		 8113static void fan_suspend(pm_message_t state)
8114{
0081b162
HMH		 8115 int rc;
8116
75700e53
HMH		 8117 if (!fan_control_allowed)
8118 return;
8119
8120 /* Store fan status in cache */
0081b162
HMH		 8121 fan_control_resume_level = 0;
8122 rc = fan_get_status_safe(&fan_control_resume_level);
8123 if (rc < 0)
0978e012
JP		 8124 pr_notice("failed to read fan level for later "
8125 "restore during resume: %d\n", rc);
0081b162
HMH		 8126
8127 /* if it is undefined, don't attempt to restore it.
8128 * KEEP THIS LAST */
75700e53 8129 if (tp_features.fan_ctrl_status_undef)
0081b162 8130 fan_control_resume_level = 0;
75700e53
HMH		 8131}
8132
8133static void fan_resume(void)
8134{
75700e53
HMH		 8135 u8 current_level = 7;
8136 bool do_set = false;
0081b162 8137 int rc;
75700e53
HMH		 8138
8139 /* DSDT *always* updates status on resume */
8140 tp_features.fan_ctrl_status_undef = 0;
8141
75700e53 8142 if (!fan_control_allowed ||
0081b162 8143 !fan_control_resume_level ||
75700e53
HMH		 8144 (fan_get_status_safe(&current_level) < 0))
8145 return;
8146
8147 switch (fan_control_access_mode) {
8148 case TPACPI_FAN_WR_ACPI_SFAN:
0081b162
HMH		 8149 /* never decrease fan level */
8150 do_set = (fan_control_resume_level > current_level);
75700e53
HMH		 8151 break;
8152 case TPACPI_FAN_WR_ACPI_FANS:
8153 case TPACPI_FAN_WR_TPEC:
0081b162
HMH		 8154 /* never decrease fan level, scale is:
8155 * TP_EC_FAN_FULLSPEED > 7 >= TP_EC_FAN_AUTO
8156 *
8157 * We expect the firmware to set either 7 or AUTO, but we
8158 * handle FULLSPEED out of paranoia.
8159 *
8160 * So, we can safely only restore FULLSPEED or 7, anything
8161 * else could slow the fan. Restoring AUTO is useless, at
8162 * best that's exactly what the DSDT already set (it is the
8163 * slower it uses).
8164 *
8165 * Always keep in mind that the DSDT *will* have set the
8166 * fans to what the vendor supposes is the best level. We
8167 * muck with it only to speed the fan up.
8168 */
8169 if (fan_control_resume_level != 7 &&
8170 !(fan_control_resume_level & TP_EC_FAN_FULLSPEED))
8171 return;
8172 else
8173 do_set = !(current_level & TP_EC_FAN_FULLSPEED) &&
8174 (current_level != fan_control_resume_level);
75700e53
HMH		 8175 break;
8176 default:
8177 return;
8178 }
8179 if (do_set) {
0978e012
JP		 8180 pr_notice("restoring fan level to 0x%02x\n",
8181 fan_control_resume_level);
0081b162
HMH		 8182 rc = fan_set_level_safe(fan_control_resume_level);
8183 if (rc < 0)
0978e012 8184 pr_notice("failed to restore fan level: %d\n", rc);
75700e53
HMH		 8185 }
8186}
8187
887965e6 8188static int fan_read(struct seq_file *m)
56b6aeb0 8189{
56b6aeb0
HMH		 8190 int rc;
8191 u8 status;
8192 unsigned int speed = 0;
8193
8194 switch (fan_status_access_mode) {
efa27145 8195 case TPACPI_FAN_RD_ACPI_GFAN:
56b6aeb0 8196 /* 570, 600e/x, 770e, 770x */
35ff8b9f
HMH		 8197 rc = fan_get_status_safe(&status);
8198 if (rc < 0)
56b6aeb0
HMH		 8199 return rc;
8200
887965e6 8201 seq_printf(m, "status:\t\t%s\n"
56b6aeb0
HMH		 8202 "level:\t\t%d\n",
8203 (status != 0) ? "enabled" : "disabled", status);
8204 break;
8205
efa27145 8206 case TPACPI_FAN_RD_TPEC:
56b6aeb0 8207 /* all except 570, 600e/x, 770e, 770x */
35ff8b9f
HMH		 8208 rc = fan_get_status_safe(&status);
8209 if (rc < 0)
56b6aeb0
HMH		 8210 return rc;
8211
887965e6 8212 seq_printf(m, "status:\t\t%s\n",
56b6aeb0
HMH		 8213 (status != 0) ? "enabled" : "disabled");
8214
35ff8b9f
HMH		 8215 rc = fan_get_speed(&speed);
8216 if (rc < 0)
56b6aeb0
HMH		 8217 return rc;
8218
887965e6 8219 seq_printf(m, "speed:\t\t%d\n", speed);
56b6aeb0 8220
efa27145 8221 if (status & TP_EC_FAN_FULLSPEED)
56b6aeb0 8222 /* Disengaged mode takes precedence */
887965e6 8223 seq_printf(m, "level:\t\tdisengaged\n");
efa27145 8224 else if (status & TP_EC_FAN_AUTO)
887965e6 8225 seq_printf(m, "level:\t\tauto\n");
56b6aeb0 8226 else
887965e6 8227 seq_printf(m, "level:\t\t%d\n", status);
56b6aeb0
HMH		 8228 break;
8229
efa27145 8230 case TPACPI_FAN_NONE:
56b6aeb0 8231 default:
887965e6 8232 seq_printf(m, "status:\t\tnot supported\n");
56b6aeb0
HMH		 8233 }
8234
efa27145 8235 if (fan_control_commands & TPACPI_FAN_CMD_LEVEL) {
887965e6 8236 seq_printf(m, "commands:\tlevel <level>");
56b6aeb0
HMH		 8237
8238 switch (fan_control_access_mode) {
efa27145 8239 case TPACPI_FAN_WR_ACPI_SFAN:
887965e6 8240 seq_printf(m, " (<level> is 0-7)\n");
56b6aeb0
HMH		 8241 break;
8242
8243 default:
887965e6 8244 seq_printf(m, " (<level> is 0-7, "
fe98a52c 8245 "auto, disengaged, full-speed)\n");
56b6aeb0
HMH		 8246 break;
8247 }
8248 }
18ad7996 8249
efa27145 8250 if (fan_control_commands & TPACPI_FAN_CMD_ENABLE)
887965e6 8251 seq_printf(m, "commands:\tenable, disable\n"
35ff8b9f
HMH		 8252 "commands:\twatchdog <timeout> (<timeout> "
8253 "is 0 (off), 1-120 (seconds))\n");
1da177e4 8254
efa27145 8255 if (fan_control_commands & TPACPI_FAN_CMD_SPEED)
887965e6 8256 seq_printf(m, "commands:\tspeed <speed>"
56b6aeb0
HMH		 8257 " (<speed> is 0-65535)\n");
8258
887965e6 8259 return 0;
78f81cc4
BD		 8260}
8261
18ad7996
HMH		 8262static int fan_write_cmd_level(const char *cmd, int *rc)
8263{
8264 int level;
8265
a12095c2 8266 if (strlencmp(cmd, "level auto") == 0)
efa27145 8267 level = TP_EC_FAN_AUTO;
fe98a52c 8268 else if ((strlencmp(cmd, "level disengaged") == 0) |
35ff8b9f 8269 (strlencmp(cmd, "level full-speed") == 0))
efa27145 8270 level = TP_EC_FAN_FULLSPEED;
a12095c2 8271 else if (sscanf(cmd, "level %d", &level) != 1)
18ad7996
HMH		 8272 return 0;
8273
35ff8b9f
HMH		 8274 *rc = fan_set_level_safe(level);
8275 if (*rc == -ENXIO)
0978e012
JP		 8276 pr_err("level command accepted for unsupported access mode %d\n",
8277 fan_control_access_mode);
74a60c0f
HMH		 8278 else if (!*rc)
8279 tpacpi_disclose_usertask("procfs fan",
8280 "set level to %d\n", level);
18ad7996
HMH		 8281
8282 return 1;
8283}
8284
8285static int fan_write_cmd_enable(const char *cmd, int *rc)
8286{
8287 if (strlencmp(cmd, "enable") != 0)
8288 return 0;
8289
35ff8b9f
HMH		 8290 *rc = fan_set_enable();
8291 if (*rc == -ENXIO)
0978e012
JP		 8292 pr_err("enable command accepted for unsupported access mode %d\n",
8293 fan_control_access_mode);
74a60c0f
HMH		 8294 else if (!*rc)
8295 tpacpi_disclose_usertask("procfs fan", "enable\n");
18ad7996
HMH		 8296
8297 return 1;
8298}
8299
8300static int fan_write_cmd_disable(const char *cmd, int *rc)
8301{
8302 if (strlencmp(cmd, "disable") != 0)
8303 return 0;
8304
35ff8b9f
HMH		 8305 *rc = fan_set_disable();
8306 if (*rc == -ENXIO)
0978e012
JP		 8307 pr_err("disable command accepted for unsupported access mode %d\n",
8308 fan_control_access_mode);
74a60c0f
HMH		 8309 else if (!*rc)
8310 tpacpi_disclose_usertask("procfs fan", "disable\n");
18ad7996
HMH		 8311
8312 return 1;
8313}
8314
8315static int fan_write_cmd_speed(const char *cmd, int *rc)
8316{
8317 int speed;
8318
a8b7a662
HMH		 8319 /* TODO:
8320 * Support speed <low> <medium> <high> ? */
8321
18ad7996
HMH		 8322 if (sscanf(cmd, "speed %d", &speed) != 1)
8323 return 0;
8324
35ff8b9f
HMH		 8325 *rc = fan_set_speed(speed);
8326 if (*rc == -ENXIO)
0978e012
JP		 8327 pr_err("speed command accepted for unsupported access mode %d\n",
8328 fan_control_access_mode);
74a60c0f
HMH		 8329 else if (!*rc)
8330 tpacpi_disclose_usertask("procfs fan",
8331 "set speed to %d\n", speed);
18ad7996
HMH		 8332
8333 return 1;
8334}
8335
16663a87
HMH		 8336static int fan_write_cmd_watchdog(const char *cmd, int *rc)
8337{
8338 int interval;
8339
8340 if (sscanf(cmd, "watchdog %d", &interval) != 1)
8341 return 0;
8342
8343 if (interval < 0 || interval > 120)
8344 *rc = -EINVAL;
74a60c0f 8345 else {
16663a87 8346 fan_watchdog_maxinterval = interval;
74a60c0f
HMH		 8347 tpacpi_disclose_usertask("procfs fan",
8348 "set watchdog timer to %d\n",
8349 interval);
8350 }
16663a87
HMH		 8351
8352 return 1;
8353}
8354
18ad7996
HMH		 8355static int fan_write(char *buf)
8356{
8357 char *cmd;
8358 int rc = 0;
8359
8360 while (!rc && (cmd = next_cmd(&buf))) {
efa27145 8361 if (!((fan_control_commands & TPACPI_FAN_CMD_LEVEL) &&
18ad7996 8362 fan_write_cmd_level(cmd, &rc)) &&
efa27145 8363 !((fan_control_commands & TPACPI_FAN_CMD_ENABLE) &&
18ad7996 8364 (fan_write_cmd_enable(cmd, &rc) ||
16663a87
HMH		 8365 fan_write_cmd_disable(cmd, &rc) ||
8366 fan_write_cmd_watchdog(cmd, &rc))) &&
efa27145 8367 !((fan_control_commands & TPACPI_FAN_CMD_SPEED) &&
18ad7996
HMH		 8368 fan_write_cmd_speed(cmd, &rc))
8369 )
8370 rc = -EINVAL;
16663a87
HMH		 8371 else if (!rc)
8372 fan_watchdog_reset();
18ad7996
HMH		 8373 }
8374
8375 return rc;
8376}
8377
a5763f22
HMH		 8378static struct ibm_struct fan_driver_data = {
8379 .name = "fan",
8380 .read = fan_read,
8381 .write = fan_write,
8382 .exit = fan_exit,
75700e53
HMH		 8383 .suspend = fan_suspend,
8384 .resume = fan_resume,
a5763f22
HMH		 8385};
8386
56b6aeb0
HMH		 8387/****************************************************************************
8388 ****************************************************************************
8389 *
8390 * Infrastructure
8391 *
8392 ****************************************************************************
8393 ****************************************************************************/
8394
8b468c0c
HMH		 8395/*
8396 * HKEY event callout for other subdrivers go here
8397 * (yes, it is ugly, but it is quick, safe, and gets the job done
8398 */
8399static void tpacpi_driver_event(const unsigned int hkey_event)
8400{
347a2686
HMH		 8401 if (ibm_backlight_device) {
8402 switch (hkey_event) {
8403 case TP_HKEY_EV_BRGHT_UP:
8404 case TP_HKEY_EV_BRGHT_DOWN:
8405 tpacpi_brightness_notify_change();
8406 }
8407 }
0d204c34
HMH		 8408 if (alsa_card) {
8409 switch (hkey_event) {
8410 case TP_HKEY_EV_VOL_UP:
8411 case TP_HKEY_EV_VOL_DOWN:
8412 case TP_HKEY_EV_VOL_MUTE:
8413 volume_alsa_notify_change();
8414 }
8415 }
8b468c0c
HMH		 8416}
8417
8b468c0c
HMH		 8418static void hotkey_driver_event(const unsigned int scancode)
8419{
67bcae6e 8420 tpacpi_driver_event(TP_HKEY_EV_HOTKEY_BASE + scancode);
8b468c0c
HMH		 8421}
8422
7fd40029
HMH		 8423/* sysfs name ---------------------------------------------------------- */
8424static ssize_t thinkpad_acpi_pdev_name_show(struct device *dev,
8425 struct device_attribute *attr,
8426 char *buf)
8427{
e0c7dfe7 8428 return snprintf(buf, PAGE_SIZE, "%s\n", TPACPI_NAME);
7fd40029
HMH		 8429}
8430
8431static struct device_attribute dev_attr_thinkpad_acpi_pdev_name =
8432 __ATTR(name, S_IRUGO, thinkpad_acpi_pdev_name_show, NULL);
8433
8434/* --------------------------------------------------------------------- */
8435
56b6aeb0 8436/* /proc support */
94954cc6 8437static struct proc_dir_entry *proc_dir;
16663a87 8438
56b6aeb0
HMH		 8439/*
8440 * Module and infrastructure proble, init and exit handling
8441 */
1da177e4 8442
b21a15f6
HMH		 8443static int force_load;
8444
fe08bc4b 8445#ifdef CONFIG_THINKPAD_ACPI_DEBUG
a5763f22 8446static const char * __init str_supported(int is_supported)
fe08bc4b 8447{
a5763f22 8448 static char text_unsupported[] __initdata = "not supported";
fe08bc4b 8449
a5763f22 8450 return (is_supported)? &text_unsupported[4] : &text_unsupported[0];
fe08bc4b
HMH		 8451}
8452#endif /* CONFIG_THINKPAD_ACPI_DEBUG */
8453
b21a15f6
HMH		 8454static void ibm_exit(struct ibm_struct *ibm)
8455{
8456 dbg_printk(TPACPI_DBG_EXIT, "removing %s\n", ibm->name);
8457
8458 list_del_init(&ibm->all_drivers);
8459
8460 if (ibm->flags.acpi_notify_installed) {
8461 dbg_printk(TPACPI_DBG_EXIT,
8462 "%s: acpi_remove_notify_handler\n", ibm->name);
8463 BUG_ON(!ibm->acpi);
8464 acpi_remove_notify_handler(*ibm->acpi->handle,
8465 ibm->acpi->type,
8466 dispatch_acpi_notify);
8467 ibm->flags.acpi_notify_installed = 0;
b21a15f6
HMH		 8468 }
8469
8470 if (ibm->flags.proc_created) {
8471 dbg_printk(TPACPI_DBG_EXIT,
8472 "%s: remove_proc_entry\n", ibm->name);
8473 remove_proc_entry(ibm->name, proc_dir);
8474 ibm->flags.proc_created = 0;
8475 }
8476
8477 if (ibm->flags.acpi_driver_registered) {
8478 dbg_printk(TPACPI_DBG_EXIT,
8479 "%s: acpi_bus_unregister_driver\n", ibm->name);
8480 BUG_ON(!ibm->acpi);
8481 acpi_bus_unregister_driver(ibm->acpi->driver);
8482 kfree(ibm->acpi->driver);
8483 ibm->acpi->driver = NULL;
8484 ibm->flags.acpi_driver_registered = 0;
8485 }
8486
8487 if (ibm->flags.init_called && ibm->exit) {
8488 ibm->exit();
8489 ibm->flags.init_called = 0;
8490 }
8491
8492 dbg_printk(TPACPI_DBG_INIT, "finished removing %s\n", ibm->name);
8493}
f74a27d4 8494
a5763f22 8495static int __init ibm_init(struct ibm_init_struct *iibm)
1da177e4
LT		 8496{
8497 int ret;
a5763f22 8498 struct ibm_struct *ibm = iibm->data;
1da177e4
LT		 8499 struct proc_dir_entry *entry;
8500
a5763f22
HMH		 8501 BUG_ON(ibm == NULL);
8502
8503 INIT_LIST_HEAD(&ibm->all_drivers);
8504
92641177 8505 if (ibm->flags.experimental && !experimental)
1da177e4
LT		 8506 return 0;
8507
fe08bc4b
HMH		 8508 dbg_printk(TPACPI_DBG_INIT,
8509 "probing for %s\n", ibm->name);
8510
a5763f22
HMH		 8511 if (iibm->init) {
8512 ret = iibm->init(iibm);
5fba344c
HMH		 8513 if (ret > 0)
8514 return 0; /* probe failed */
8515 if (ret)
1da177e4 8516 return ret;
a5763f22 8517
92641177 8518 ibm->flags.init_called = 1;
1da177e4
LT		 8519 }
8520
8d376cd6
HMH		 8521 if (ibm->acpi) {
8522 if (ibm->acpi->hid) {
8523 ret = register_tpacpi_subdriver(ibm);
8524 if (ret)
8525 goto err_out;
8526 }
5fba344c 8527
8d376cd6
HMH		 8528 if (ibm->acpi->notify) {
8529 ret = setup_acpi_notify(ibm);
8530 if (ret == -ENODEV) {
0978e012
JP		 8531 pr_notice("disabling subdriver %s\n",
8532 ibm->name);
8d376cd6
HMH		 8533 ret = 0;
8534 goto err_out;
8535 }
8536 if (ret < 0)
8537 goto err_out;
5fba344c 8538 }
5fba344c
HMH		 8539 }
8540
fe08bc4b
HMH		 8541 dbg_printk(TPACPI_DBG_INIT,
8542 "%s installed\n", ibm->name);
8543
78f81cc4 8544 if (ibm->read) {
b525c06c 8545 mode_t mode = iibm->base_procfs_mode;
887965e6 8546
b525c06c
HMH		 8547 if (!mode)
8548 mode = S_IRUGO;
887965e6
AD		 8549 if (ibm->write)
8550 mode |= S_IWUSR;
8551 entry = proc_create_data(ibm->name, mode, proc_dir,
8552 &dispatch_proc_fops, ibm);
78f81cc4 8553 if (!entry) {
0978e012 8554 pr_err("unable to create proc entry %s\n", ibm->name);
5fba344c
HMH		 8555 ret = -ENODEV;
8556 goto err_out;
78f81cc4 8557 }
92641177 8558 ibm->flags.proc_created = 1;
78f81cc4 8559 }
1da177e4 8560
a5763f22
HMH		 8561 list_add_tail(&ibm->all_drivers, &tpacpi_all_drivers);
8562
1da177e4 8563 return 0;
5fba344c
HMH		 8564
8565err_out:
fe08bc4b
HMH		 8566 dbg_printk(TPACPI_DBG_INIT,
8567 "%s: at error exit path with result %d\n",
8568 ibm->name, ret);
8569
5fba344c
HMH		 8570 ibm_exit(ibm);
8571 return (ret < 0)? ret : 0;
1da177e4
LT		 8572}
8573
56b6aeb0
HMH		 8574/* Probing */
8575
050df107
HMH		 8576static bool __pure __init tpacpi_is_fw_digit(const char c)
8577{
8578 return (c >= '0' && c <= '9') || (c >= 'A' && c <= 'Z');
8579}
8580
8581/* Most models: xxyTkkWW (#.##c); Ancient 570/600 and -SL lacks (#.##c) */
8582static bool __pure __init tpacpi_is_valid_fw_id(const char* const s,
8583 const char t)
8584{
8585 return s && strlen(s) >= 8 &&
8586 tpacpi_is_fw_digit(s[0]) &&
8587 tpacpi_is_fw_digit(s[1]) &&
8588 s[2] == t && s[3] == 'T' &&
8589 tpacpi_is_fw_digit(s[4]) &&
b569ab39 8590 tpacpi_is_fw_digit(s[5]);
050df107
HMH		 8591}
8592
bf20e740
HMH		 8593/* returns 0 - probe ok, or < 0 - probe error.
8594 * Probe ok doesn't mean thinkpad found.
8595 * On error, kfree() cleanup on tp->* is not performed, caller must do it */
8596static int __must_check __init get_thinkpad_model_data(
8597 struct thinkpad_id_data *tp)
1da177e4 8598{
1855256c 8599 const struct dmi_device *dev = NULL;
56b6aeb0 8600 char ec_fw_string[18];
bf20e740 8601 char const *s;
1da177e4 8602
d5a2f2f1 8603 if (!tp)
bf20e740 8604 return -EINVAL;
d5a2f2f1
HMH		 8605
8606 memset(tp, 0, sizeof(*tp));
8607
8608 if (dmi_name_in_vendors("IBM"))
8609 tp->vendor = PCI_VENDOR_ID_IBM;
8610 else if (dmi_name_in_vendors("LENOVO"))
8611 tp->vendor = PCI_VENDOR_ID_LENOVO;
8612 else
bf20e740 8613 return 0;
d5a2f2f1 8614
bf20e740
HMH		 8615 s = dmi_get_system_info(DMI_BIOS_VERSION);
8616 tp->bios_version_str = kstrdup(s, GFP_KERNEL);
8617 if (s && !tp->bios_version_str)
8618 return -ENOMEM;
050df107
HMH		 8619
8620 /* Really ancient ThinkPad 240X will fail this, which is fine */
8621 if (!tpacpi_is_valid_fw_id(tp->bios_version_str, 'E'))
bf20e740 8622 return 0;
050df107 8623
d5a2f2f1
HMH		 8624 tp->bios_model = tp->bios_version_str[0]
8625 | (tp->bios_version_str[1] << 8);
050df107
HMH		 8626 tp->bios_release = (tp->bios_version_str[4] << 8)
8627 | tp->bios_version_str[5];
d5a2f2f1 8628
56b6aeb0
HMH		 8629 /*
8630 * ThinkPad T23 or newer, A31 or newer, R50e or newer,
8631 * X32 or newer, all Z series; Some models must have an
8632 * up-to-date BIOS or they will not be detected.
8633 *
8634 * See http://thinkwiki.org/wiki/List_of_DMI_IDs
8635 */
8636 while ((dev = dmi_find_device(DMI_DEV_TYPE_OEM_STRING, NULL, dev))) {
8637 if (sscanf(dev->name,
8638 "IBM ThinkPad Embedded Controller -[%17c",
8639 ec_fw_string) == 1) {
8640 ec_fw_string[sizeof(ec_fw_string) - 1] = 0;
8641 ec_fw_string[strcspn(ec_fw_string, " ]")] = 0;
d5a2f2f1
HMH		 8642
8643 tp->ec_version_str = kstrdup(ec_fw_string, GFP_KERNEL);
bf20e740
HMH		 8644 if (!tp->ec_version_str)
8645 return -ENOMEM;
050df107
HMH		 8646
8647 if (tpacpi_is_valid_fw_id(ec_fw_string, 'H')) {
8648 tp->ec_model = ec_fw_string[0]
8649 | (ec_fw_string[1] << 8);
8650 tp->ec_release = (ec_fw_string[4] << 8)
8651 | ec_fw_string[5];
8652 } else {
0978e012
JP		 8653 pr_notice("ThinkPad firmware release %s "
8654 "doesn't match the known patterns\n",
8655 ec_fw_string);
8656 pr_notice("please report this to %s\n",
8657 TPACPI_MAIL);
050df107 8658 }
d5a2f2f1 8659 break;
78f81cc4 8660 }
1da177e4 8661 }
d5a2f2f1 8662
bf20e740
HMH		 8663 s = dmi_get_system_info(DMI_PRODUCT_VERSION);
8664 if (s && !strnicmp(s, "ThinkPad", 8)) {
8665 tp->model_str = kstrdup(s, GFP_KERNEL);
8666 if (!tp->model_str)
8667 return -ENOMEM;
d5a2f2f1 8668 }
8c74adbc 8669
bf20e740
HMH		 8670 s = dmi_get_system_info(DMI_PRODUCT_NAME);
8671 tp->nummodel_str = kstrdup(s, GFP_KERNEL);
8672 if (s && !tp->nummodel_str)
8673 return -ENOMEM;
8674
8675 return 0;
1da177e4
LT		 8676}
8677
5fba344c
HMH		 8678static int __init probe_for_thinkpad(void)
8679{
8680 int is_thinkpad;
8681
8682 if (acpi_disabled)
8683 return -ENODEV;
8684
e28393c0
HMH		 8685 /* It would be dangerous to run the driver in this case */
8686 if (!tpacpi_is_ibm() && !tpacpi_is_lenovo())
8687 return -ENODEV;
8688
5fba344c
HMH		 8689 /*
8690 * Non-ancient models have better DMI tagging, but very old models
e675abaf 8691 * don't. tpacpi_is_fw_known() is a cheat to help in that case.
5fba344c 8692 */
e675abaf
HMH		 8693 is_thinkpad = (thinkpad_id.model_str != NULL) ||
8694 (thinkpad_id.ec_model != 0) ||
8695 tpacpi_is_fw_known();
5fba344c 8696
437e470c
HMH		 8697 /* The EC handler is required */
8698 tpacpi_acpi_handle_locate("ec", TPACPI_ACPI_EC_HID, &ec_handle);
5fba344c
HMH		 8699 if (!ec_handle) {
8700 if (is_thinkpad)
0978e012 8701 pr_err("Not yet supported ThinkPad detected!\n");
5fba344c
HMH		 8702 return -ENODEV;
8703 }
8704
0dcef77c
HMH		 8705 if (!is_thinkpad && !force_load)
8706 return -ENODEV;
8707
5fba344c
HMH		 8708 return 0;
8709}
8710
7a43f788
HMH		 8711static void __init thinkpad_acpi_init_banner(void)
8712{
0978e012
JP		 8713 pr_info("%s v%s\n", TPACPI_DESC, TPACPI_VERSION);
8714 pr_info("%s\n", TPACPI_URL);
7a43f788 8715
0978e012 8716 pr_info("ThinkPad BIOS %s, EC %s\n",
7a43f788
HMH		 8717 (thinkpad_id.bios_version_str) ?
8718 thinkpad_id.bios_version_str : "unknown",
8719 (thinkpad_id.ec_version_str) ?
8720 thinkpad_id.ec_version_str : "unknown");
8721
8722 BUG_ON(!thinkpad_id.vendor);
8723
8724 if (thinkpad_id.model_str)
0978e012 8725 pr_info("%s %s, model %s\n",
7a43f788
HMH		 8726 (thinkpad_id.vendor == PCI_VENDOR_ID_IBM) ?
8727 "IBM" : ((thinkpad_id.vendor ==
8728 PCI_VENDOR_ID_LENOVO) ?
8729 "Lenovo" : "Unknown vendor"),
8730 thinkpad_id.model_str,
8731 (thinkpad_id.nummodel_str) ?
8732 thinkpad_id.nummodel_str : "unknown");
8733}
5fba344c 8734
56b6aeb0 8735/* Module init, exit, parameters */
1da177e4 8736
a5763f22
HMH		 8737static struct ibm_init_struct ibms_init[] __initdata = {
8738 {
a5763f22
HMH		 8739 .data = &thinkpad_acpi_driver_data,
8740 },
8741 {
8742 .init = hotkey_init,
8743 .data = &hotkey_driver_data,
8744 },
8745 {
8746 .init = bluetooth_init,
8747 .data = &bluetooth_driver_data,
8748 },
8749 {
8750 .init = wan_init,
8751 .data = &wan_driver_data,
8752 },
0045c0aa
HMH		 8753 {
8754 .init = uwb_init,
8755 .data = &uwb_driver_data,
8756 },
d7c1d17d 8757#ifdef CONFIG_THINKPAD_ACPI_VIDEO
a5763f22
HMH		 8758 {
8759 .init = video_init,
b525c06c 8760 .base_procfs_mode = S_IRUSR,
a5763f22
HMH		 8761 .data = &video_driver_data,
8762 },
d7c1d17d 8763#endif
a5763f22
HMH		 8764 {
8765 .init = light_init,
8766 .data = &light_driver_data,
8767 },
a5763f22
HMH		 8768 {
8769 .init = cmos_init,
8770 .data = &cmos_driver_data,
8771 },
8772 {
8773 .init = led_init,
8774 .data = &led_driver_data,
8775 },
8776 {
8777 .init = beep_init,
8778 .data = &beep_driver_data,
8779 },
8780 {
8781 .init = thermal_init,
8782 .data = &thermal_driver_data,
8783 },
a5763f22
HMH		 8784 {
8785 .init = brightness_init,
8786 .data = &brightness_driver_data,
8787 },
8788 {
329e4e18 8789 .init = volume_init,
a5763f22
HMH		 8790 .data = &volume_driver_data,
8791 },
8792 {
8793 .init = fan_init,
8794 .data = &fan_driver_data,
8795 },
8796};
8797
3945ac36 8798static int __init set_ibm_param(const char *val, struct kernel_param *kp)
1da177e4
LT		 8799{
8800 unsigned int i;
a5763f22 8801 struct ibm_struct *ibm;
1da177e4 8802
59f91ff1
HMH		 8803 if (!kp || !kp->name || !val)
8804 return -EINVAL;
8805
a5763f22
HMH		 8806 for (i = 0; i < ARRAY_SIZE(ibms_init); i++) {
8807 ibm = ibms_init[i].data;
59f91ff1
HMH		 8808 WARN_ON(ibm == NULL);
8809
8810 if (!ibm || !ibm->name)
8811 continue;
a5763f22
HMH		 8812
8813 if (strcmp(ibm->name, kp->name) == 0 && ibm->write) {
8814 if (strlen(val) > sizeof(ibms_init[i].param) - 2)
78f81cc4 8815 return -ENOSPC;
a5763f22
HMH		 8816 strcpy(ibms_init[i].param, val);
8817 strcat(ibms_init[i].param, ",");
78f81cc4
BD		 8818 return 0;
8819 }
a5763f22 8820 }
1da177e4 8821
1da177e4
LT		 8822 return -EINVAL;
8823}
8824
b09c7225 8825module_param(experimental, int, 0444);
f68080f8 8826MODULE_PARM_DESC(experimental,
35ff8b9f 8827 "Enables experimental features when non-zero");
56b6aeb0 8828
132ce091 8829module_param_named(debug, dbg_level, uint, 0);
f68080f8 8830MODULE_PARM_DESC(debug, "Sets debug level bit-mask");
132ce091 8831
b09c7225 8832module_param(force_load, bool, 0444);
f68080f8 8833MODULE_PARM_DESC(force_load,
35ff8b9f
HMH		 8834 "Attempts to load the driver even on a "
8835 "mis-identified ThinkPad when true");
0dcef77c 8836
b09c7225 8837module_param_named(fan_control, fan_control_allowed, bool, 0444);
f68080f8 8838MODULE_PARM_DESC(fan_control,
35ff8b9f 8839 "Enables setting fan parameters features when true");
ecf2a80a 8840
b09c7225 8841module_param_named(brightness_mode, brightness_mode, uint, 0444);
f68080f8 8842MODULE_PARM_DESC(brightness_mode,
35ff8b9f 8843 "Selects brightness control strategy: "
0e501834 8844 "0=auto, 1=EC, 2=UCMS, 3=EC+NVRAM");
24d3b774 8845
b09c7225 8846module_param(brightness_enable, uint, 0444);
f68080f8 8847MODULE_PARM_DESC(brightness_enable,
35ff8b9f 8848 "Enables backlight control when 1, disables when 0");
87cc537a 8849
b09c7225 8850module_param(hotkey_report_mode, uint, 0444);
f68080f8 8851MODULE_PARM_DESC(hotkey_report_mode,
35ff8b9f
HMH		 8852 "used for backwards compatibility with userspace, "
8853 "see documentation");
ff80f137 8854
ff850c33 8855#ifdef CONFIG_THINKPAD_ACPI_ALSA_SUPPORT
329e4e18
HMH		 8856module_param_named(volume_mode, volume_mode, uint, 0444);
8857MODULE_PARM_DESC(volume_mode,
8858 "Selects volume control strategy: "
8859 "0=auto, 1=EC, 2=N/A, 3=EC+NVRAM");
8860
a112ceee
HMH		 8861module_param_named(volume_capabilities, volume_capabilities, uint, 0444);
8862MODULE_PARM_DESC(volume_capabilities,
8863 "Selects the mixer capabilites: "
8864 "0=auto, 1=volume and mute, 2=mute only");
8865
c7ac6291
HMH		 8866module_param_named(volume_control, volume_control_allowed, bool, 0444);
8867MODULE_PARM_DESC(volume_control,
8868 "Enables software override for the console audio "
8869 "control when true");
8870
0d204c34
HMH		 8871/* ALSA module API parameters */
8872module_param_named(index, alsa_index, int, 0444);
8873MODULE_PARM_DESC(index, "ALSA index for the ACPI EC Mixer");
8874module_param_named(id, alsa_id, charp, 0444);
8875MODULE_PARM_DESC(id, "ALSA id for the ACPI EC Mixer");
8876module_param_named(enable, alsa_enable, bool, 0444);
8877MODULE_PARM_DESC(enable, "Enable the ALSA interface for the ACPI EC Mixer");
ff850c33 8878#endif /* CONFIG_THINKPAD_ACPI_ALSA_SUPPORT */
0d204c34 8879
e0c7dfe7 8880#define TPACPI_PARAM(feature) \
f68080f8 8881 module_param_call(feature, set_ibm_param, NULL, NULL, 0); \
cbb14842 8882 MODULE_PARM_DESC(feature, "Simulates thinkpad-acpi procfs command " \
35ff8b9f 8883 "at module load, see documentation")
1da177e4 8884
e0c7dfe7
HMH		 8885TPACPI_PARAM(hotkey);
8886TPACPI_PARAM(bluetooth);
8887TPACPI_PARAM(video);
8888TPACPI_PARAM(light);
e0c7dfe7
HMH		 8889TPACPI_PARAM(cmos);
8890TPACPI_PARAM(led);
8891TPACPI_PARAM(beep);
e0c7dfe7
HMH		 8892TPACPI_PARAM(brightness);
8893TPACPI_PARAM(volume);
8894TPACPI_PARAM(fan);
78f81cc4 8895
a73f3091 8896#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
b09c7225 8897module_param(dbg_wlswemul, uint, 0444);
a73f3091
HMH		 8898MODULE_PARM_DESC(dbg_wlswemul, "Enables WLSW emulation");
8899module_param_named(wlsw_state, tpacpi_wlsw_emulstate, bool, 0);
8900MODULE_PARM_DESC(wlsw_state,
8901 "Initial state of the emulated WLSW switch");
8902
b09c7225 8903module_param(dbg_bluetoothemul, uint, 0444);
a73f3091
HMH		 8904MODULE_PARM_DESC(dbg_bluetoothemul, "Enables bluetooth switch emulation");
8905module_param_named(bluetooth_state, tpacpi_bluetooth_emulstate, bool, 0);
8906MODULE_PARM_DESC(bluetooth_state,
8907 "Initial state of the emulated bluetooth switch");
8908
b09c7225 8909module_param(dbg_wwanemul, uint, 0444);
a73f3091
HMH		 8910MODULE_PARM_DESC(dbg_wwanemul, "Enables WWAN switch emulation");
8911module_param_named(wwan_state, tpacpi_wwan_emulstate, bool, 0);
8912MODULE_PARM_DESC(wwan_state,
8913 "Initial state of the emulated WWAN switch");
0045c0aa 8914
b09c7225 8915module_param(dbg_uwbemul, uint, 0444);
0045c0aa
HMH		 8916MODULE_PARM_DESC(dbg_uwbemul, "Enables UWB switch emulation");
8917module_param_named(uwb_state, tpacpi_uwb_emulstate, bool, 0);
8918MODULE_PARM_DESC(uwb_state,
8919 "Initial state of the emulated UWB switch");
a73f3091
HMH		 8920#endif
8921
b21a15f6
HMH		 8922static void thinkpad_acpi_module_exit(void)
8923{
8924 struct ibm_struct *ibm, *itmp;
8925
8926 tpacpi_lifecycle = TPACPI_LIFE_EXITING;
8927
8928 list_for_each_entry_safe_reverse(ibm, itmp,
8929 &tpacpi_all_drivers,
8930 all_drivers) {
8931 ibm_exit(ibm);
8932 }
8933
8934 dbg_printk(TPACPI_DBG_INIT, "finished subdriver exit path...\n");
8935
8936 if (tpacpi_inputdev) {
8937 if (tp_features.input_device_registered)
8938 input_unregister_device(tpacpi_inputdev);
8939 else
8940 input_free_device(tpacpi_inputdev);
8941 }
8942
8943 if (tpacpi_hwmon)
8944 hwmon_device_unregister(tpacpi_hwmon);
8945
8946 if (tp_features.sensors_pdev_attrs_registered)
8947 device_remove_file(&tpacpi_sensors_pdev->dev,
8948 &dev_attr_thinkpad_acpi_pdev_name);
8949 if (tpacpi_sensors_pdev)
8950 platform_device_unregister(tpacpi_sensors_pdev);
8951 if (tpacpi_pdev)
8952 platform_device_unregister(tpacpi_pdev);
8953
8954 if (tp_features.sensors_pdrv_attrs_registered)
8955 tpacpi_remove_driver_attributes(&tpacpi_hwmon_pdriver.driver);
8956 if (tp_features.platform_drv_attrs_registered)
8957 tpacpi_remove_driver_attributes(&tpacpi_pdriver.driver);
8958
8959 if (tp_features.sensors_pdrv_registered)
8960 platform_driver_unregister(&tpacpi_hwmon_pdriver);
8961
8962 if (tp_features.platform_drv_registered)
8963 platform_driver_unregister(&tpacpi_pdriver);
8964
8965 if (proc_dir)
e0c7dfe7 8966 remove_proc_entry(TPACPI_PROC_DIR, acpi_root_dir);
b21a15f6 8967
e0e3c061
HMH		 8968 if (tpacpi_wq)
8969 destroy_workqueue(tpacpi_wq);
8970
b21a15f6
HMH		 8971 kfree(thinkpad_id.bios_version_str);
8972 kfree(thinkpad_id.ec_version_str);
8973 kfree(thinkpad_id.model_str);
8974}
8975
f74a27d4 8976
1def7115 8977static int __init thinkpad_acpi_module_init(void)
1da177e4
LT		 8978{
8979 int ret, i;
8980
8fef502e
HMH		 8981 tpacpi_lifecycle = TPACPI_LIFE_INIT;
8982
ff80f137
HMH		 8983 /* Parameter checking */
8984 if (hotkey_report_mode > 2)
8985 return -EINVAL;
8986
54ae1501 8987 /* Driver-level probe */
d5a2f2f1 8988
bf20e740
HMH		 8989 ret = get_thinkpad_model_data(&thinkpad_id);
8990 if (ret) {
0978e012 8991 pr_err("unable to get DMI data: %d\n", ret);
bf20e740
HMH		 8992 thinkpad_acpi_module_exit();
8993 return ret;
8994 }
5fba344c 8995 ret = probe_for_thinkpad();
d5a2f2f1
HMH		 8996 if (ret) {
8997 thinkpad_acpi_module_exit();
5fba344c 8998 return ret;
d5a2f2f1 8999 }
1da177e4 9000
54ae1501 9001 /* Driver initialization */
d5a2f2f1 9002
7a43f788
HMH		 9003 thinkpad_acpi_init_banner();
9004 tpacpi_check_outdated_fw();
9005
e0c7dfe7
HMH		 9006 TPACPI_ACPIHANDLE_INIT(ecrd);
9007 TPACPI_ACPIHANDLE_INIT(ecwr);
1da177e4 9008
e0e3c061
HMH		 9009 tpacpi_wq = create_singlethread_workqueue(TPACPI_WORKQUEUE_NAME);
9010 if (!tpacpi_wq) {
9011 thinkpad_acpi_module_exit();
9012 return -ENOMEM;
9013 }
9014
e0c7dfe7 9015 proc_dir = proc_mkdir(TPACPI_PROC_DIR, acpi_root_dir);
1da177e4 9016 if (!proc_dir) {
0978e012 9017 pr_err("unable to create proc dir " TPACPI_PROC_DIR "\n");
1def7115 9018 thinkpad_acpi_module_exit();
1da177e4
LT		 9019 return -ENODEV;
9020 }
78f81cc4 9021
54ae1501
HMH		 9022 ret = platform_driver_register(&tpacpi_pdriver);
9023 if (ret) {
0978e012 9024 pr_err("unable to register main platform driver\n");
54ae1501
HMH		 9025 thinkpad_acpi_module_exit();
9026 return ret;
9027 }
ac36393d
HMH		 9028 tp_features.platform_drv_registered = 1;
9029
7fd40029
HMH		 9030 ret = platform_driver_register(&tpacpi_hwmon_pdriver);
9031 if (ret) {
0978e012 9032 pr_err("unable to register hwmon platform driver\n");
7fd40029
HMH		 9033 thinkpad_acpi_module_exit();
9034 return ret;
9035 }
9036 tp_features.sensors_pdrv_registered = 1;
9037
176750d6 9038 ret = tpacpi_create_driver_attributes(&tpacpi_pdriver.driver);
2369cc94
HMH		 9039 if (!ret) {
9040 tp_features.platform_drv_attrs_registered = 1;
35ff8b9f
HMH		 9041 ret = tpacpi_create_driver_attributes(
9042 &tpacpi_hwmon_pdriver.driver);
2369cc94 9043 }
176750d6 9044 if (ret) {
0978e012 9045 pr_err("unable to create sysfs driver attributes\n");
176750d6
HMH		 9046 thinkpad_acpi_module_exit();
9047 return ret;
9048 }
2369cc94 9049 tp_features.sensors_pdrv_attrs_registered = 1;
176750d6 9050
54ae1501
HMH		 9051
9052 /* Device initialization */
e0c7dfe7 9053 tpacpi_pdev = platform_device_register_simple(TPACPI_DRVR_NAME, -1,
54ae1501
HMH		 9054 NULL, 0);
9055 if (IS_ERR(tpacpi_pdev)) {
9056 ret = PTR_ERR(tpacpi_pdev);
9057 tpacpi_pdev = NULL;
0978e012 9058 pr_err("unable to register platform device\n");
54ae1501
HMH		 9059 thinkpad_acpi_module_exit();
9060 return ret;
9061 }
7fd40029 9062 tpacpi_sensors_pdev = platform_device_register_simple(
35ff8b9f
HMH		 9063 TPACPI_HWMON_DRVR_NAME,
9064 -1, NULL, 0);
7fd40029
HMH		 9065 if (IS_ERR(tpacpi_sensors_pdev)) {
9066 ret = PTR_ERR(tpacpi_sensors_pdev);
9067 tpacpi_sensors_pdev = NULL;
0978e012 9068 pr_err("unable to register hwmon platform device\n");
7fd40029
HMH		 9069 thinkpad_acpi_module_exit();
9070 return ret;
9071 }
9072 ret = device_create_file(&tpacpi_sensors_pdev->dev,
9073 &dev_attr_thinkpad_acpi_pdev_name);
9074 if (ret) {
0978e012 9075 pr_err("unable to create sysfs hwmon device attributes\n");
7fd40029
HMH		 9076 thinkpad_acpi_module_exit();
9077 return ret;
9078 }
9079 tp_features.sensors_pdev_attrs_registered = 1;
9080 tpacpi_hwmon = hwmon_device_register(&tpacpi_sensors_pdev->dev);
54ae1501
HMH		 9081 if (IS_ERR(tpacpi_hwmon)) {
9082 ret = PTR_ERR(tpacpi_hwmon);
9083 tpacpi_hwmon = NULL;
0978e012 9084 pr_err("unable to register hwmon device\n");
54ae1501
HMH		 9085 thinkpad_acpi_module_exit();
9086 return ret;
9087 }
8523ed6f 9088 mutex_init(&tpacpi_inputdev_send_mutex);
7f5d1cd6
HMH		 9089 tpacpi_inputdev = input_allocate_device();
9090 if (!tpacpi_inputdev) {
0978e012 9091 pr_err("unable to allocate input device\n");
7f5d1cd6
HMH		 9092 thinkpad_acpi_module_exit();
9093 return -ENOMEM;
9094 } else {
9095 /* Prepare input device, but don't register */
9096 tpacpi_inputdev->name = "ThinkPad Extra Buttons";
e0c7dfe7 9097 tpacpi_inputdev->phys = TPACPI_DRVR_NAME "/input0";
7f5d1cd6 9098 tpacpi_inputdev->id.bustype = BUS_HOST;
e28393c0 9099 tpacpi_inputdev->id.vendor = thinkpad_id.vendor;
7f5d1cd6
HMH		 9100 tpacpi_inputdev->id.product = TPACPI_HKEY_INPUT_PRODUCT;
9101 tpacpi_inputdev->id.version = TPACPI_HKEY_INPUT_VERSION;
d112ef95 9102 tpacpi_inputdev->dev.parent = &tpacpi_pdev->dev;
7f5d1cd6 9103 }
77775838
HMH		 9104
9105 /* Init subdriver dependencies */
9106 tpacpi_detect_brightness_capabilities();
9107
9108 /* Init subdrivers */
a5763f22
HMH		 9109 for (i = 0; i < ARRAY_SIZE(ibms_init); i++) {
9110 ret = ibm_init(&ibms_init[i]);
9111 if (ret >= 0 && *ibms_init[i].param)
9112 ret = ibms_init[i].data->write(ibms_init[i].param);
1da177e4 9113 if (ret < 0) {
1def7115 9114 thinkpad_acpi_module_exit();
1da177e4
LT		 9115 return ret;
9116 }
9117 }
b589ea4c
HMH		 9118
9119 tpacpi_lifecycle = TPACPI_LIFE_RUNNING;
9120
7f5d1cd6
HMH		 9121 ret = input_register_device(tpacpi_inputdev);
9122 if (ret < 0) {
0978e012 9123 pr_err("unable to register input device\n");
7f5d1cd6
HMH		 9124 thinkpad_acpi_module_exit();
9125 return ret;
9126 } else {
9127 tp_features.input_device_registered = 1;
9128 }
1da177e4
LT		 9129
9130 return 0;
9131}
9132
95e57ab2
HMH		 9133MODULE_ALIAS(TPACPI_DRVR_SHORTNAME);
9134
922fe097
HMH		 9135/*
9136 * This will autoload the driver in almost every ThinkPad
9137 * in widespread use.
9138 *
9139 * Only _VERY_ old models, like the 240, 240x and 570 lack
9140 * the HKEY event interface.
9141 */
9142MODULE_DEVICE_TABLE(acpi, ibm_htk_device_ids);
9143
f68080f8
HMH		 9144/*
9145 * DMI matching for module autoloading
9146 *
9147 * See http://thinkwiki.org/wiki/List_of_DMI_IDs
9148 * See http://thinkwiki.org/wiki/BIOS_Upgrade_Downloads
9149 *
9150 * Only models listed in thinkwiki will be supported, so add yours
9151 * if it is not there yet.
9152 */
9153#define IBM_BIOS_MODULE_ALIAS(__type) \
b36a50f9 9154 MODULE_ALIAS("dmi:bvnIBM:bvr" __type "ET??WW*")
f68080f8 9155
f68080f8
HMH		 9156/* Ancient thinkpad BIOSes have to be identified by
9157 * BIOS type or model number, and there are far less
9158 * BIOS types than model numbers... */
922fe097 9159IBM_BIOS_MODULE_ALIAS("I[MU]"); /* 570, 570e */
f68080f8 9160
f68f53a2
HMH		 9161MODULE_AUTHOR("Borislav Deianov <borislav@users.sf.net>");
9162MODULE_AUTHOR("Henrique de Moraes Holschuh <hmh@hmh.eng.br>");
e0c7dfe7
HMH		 9163MODULE_DESCRIPTION(TPACPI_DESC);
9164MODULE_VERSION(TPACPI_VERSION);
f68080f8
HMH		 9165MODULE_LICENSE("GPL");
9166
1def7115
HMH		 9167module_init(thinkpad_acpi_module_init);
9168module_exit(thinkpad_acpi_module_exit);
Linux kernel - Deliverables
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