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module_param: make bool parameters really bool (arch)
[deliverable/linux.git] / drivers / platform / x86 / thinkpad_acpi.c
CommitLineData
1da177e4 1/*
643f12db 2 * thinkpad_acpi.c - ThinkPad ACPI Extras
1da177e4
LT		 3 *
4 *
78f81cc4 5 * Copyright (C) 2004-2005 Borislav Deianov <borislav@users.sf.net>
1c762ca4 6 * Copyright (C) 2006-2009 Henrique de Moraes Holschuh <hmh@hmh.eng.br>
1da177e4
LT		 7 *
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
12 *
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
17 *
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
a62bc916
HMH		 20 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
21 * 02110-1301, USA.
78f81cc4
BD		 22 */
23
0978e012
JP		 24#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
25
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 *);
d161a13f 300 umode_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;
8a32c441 2459 unsigned int change_detector;
db25f16d 2460 unsigned int poll_freq;
8a32c441 2461 bool was_frozen;
01e88f25
HMH		 2462
2463 mutex_lock(&hotkey_thread_mutex);
2464
2465 if (tpacpi_lifecycle == TPACPI_LIFE_EXITING)
2466 goto exit;
2467
2468 set_freezable();
2469
2470 so = 0;
2471 si = 1;
2472 t = 0;
2473
2474 /* Initial state for compares */
2475 mutex_lock(&hotkey_thread_data_mutex);
2476 change_detector = hotkey_config_change;
0d922e3b
HMH		 2477 poll_mask = hotkey_source_mask;
2478 event_mask = hotkey_source_mask &
2479 (hotkey_driver_mask | hotkey_user_mask);
db25f16d 2480 poll_freq = hotkey_poll_freq;
01e88f25 2481 mutex_unlock(&hotkey_thread_data_mutex);
0d922e3b 2482 hotkey_read_nvram(&s[so], poll_mask);
01e88f25 2483
db25f16d
HMH		 2484 while (!kthread_should_stop()) {
2485 if (t == 0) {
2486 if (likely(poll_freq))
2487 t = 1000/poll_freq;
2488 else
2489 t = 100; /* should never happen... */
2490 }
01e88f25 2491 t = msleep_interruptible(t);
8a32c441 2492 if (unlikely(kthread_freezable_should_stop(&was_frozen)))
01e88f25 2493 break;
8a32c441
TH		 2494
2495 if (t > 0 && !was_frozen)
01e88f25
HMH		 2496 continue;
2497
2498 mutex_lock(&hotkey_thread_data_mutex);
8a32c441 2499 if (was_frozen || hotkey_config_change != change_detector) {
01e88f25
HMH		 2500 /* forget old state on thaw or config change */
2501 si = so;
2502 t = 0;
2503 change_detector = hotkey_config_change;
2504 }
0d922e3b
HMH		 2505 poll_mask = hotkey_source_mask;
2506 event_mask = hotkey_source_mask &
2507 (hotkey_driver_mask | hotkey_user_mask);
db25f16d 2508 poll_freq = hotkey_poll_freq;
01e88f25
HMH		 2509 mutex_unlock(&hotkey_thread_data_mutex);
2510
0d922e3b
HMH		 2511 if (likely(poll_mask)) {
2512 hotkey_read_nvram(&s[si], poll_mask);
01e88f25
HMH		 2513 if (likely(si != so)) {
2514 hotkey_compare_and_issue_event(&s[so], &s[si],
0d922e3b 2515 event_mask);
01e88f25
HMH		 2516 }
2517 }
2518
2519 so = si;
2520 si ^= 1;
2521 }
2522
2523exit:
2524 mutex_unlock(&hotkey_thread_mutex);
2525 return 0;
2526}
2527
db25f16d 2528/* call with hotkey_mutex held */
01e88f25
HMH		 2529static void hotkey_poll_stop_sync(void)
2530{
2531 if (tpacpi_hotkey_task) {
01e88f25
HMH		 2532 kthread_stop(tpacpi_hotkey_task);
2533 tpacpi_hotkey_task = NULL;
2534 mutex_lock(&hotkey_thread_mutex);
2535 /* at this point, the thread did exit */
2536 mutex_unlock(&hotkey_thread_mutex);
2537 }
2538}
2539
2540/* call with hotkey_mutex held */
7f0cf712 2541static void hotkey_poll_setup(const bool may_warn)
01e88f25 2542{
0d922e3b
HMH		 2543 const u32 poll_driver_mask = hotkey_driver_mask & hotkey_source_mask;
2544 const u32 poll_user_mask = hotkey_user_mask & hotkey_source_mask;
db25f16d 2545
0d922e3b
HMH		 2546 if (hotkey_poll_freq > 0 &&
2547 (poll_driver_mask ||
2548 (poll_user_mask && tpacpi_inputdev->users > 0))) {
01e88f25
HMH		 2549 if (!tpacpi_hotkey_task) {
2550 tpacpi_hotkey_task = kthread_run(hotkey_kthread,
95e57ab2 2551 NULL, TPACPI_NVRAM_KTHREAD_NAME);
01e88f25
HMH		 2552 if (IS_ERR(tpacpi_hotkey_task)) {
2553 tpacpi_hotkey_task = NULL;
0978e012 2554 pr_err("could not create kernel thread "
01e88f25
HMH		 2555 "for hotkey polling\n");
2556 }
2557 }
2558 } else {
2559 hotkey_poll_stop_sync();
0d922e3b 2560 if (may_warn && (poll_driver_mask || poll_user_mask) &&
db25f16d 2561 hotkey_poll_freq == 0) {
0978e012
JP		 2562 pr_notice("hot keys 0x%08x and/or events 0x%08x "
2563 "require polling, which is currently "
2564 "disabled\n",
2565 poll_user_mask, poll_driver_mask);
01e88f25
HMH		 2566 }
2567 }
2568}
2569
7f0cf712 2570static void hotkey_poll_setup_safe(const bool may_warn)
01e88f25
HMH		 2571{
2572 mutex_lock(&hotkey_mutex);
2573 hotkey_poll_setup(may_warn);
2574 mutex_unlock(&hotkey_mutex);
2575}
2576
db25f16d
HMH		 2577/* call with hotkey_mutex held */
2578static void hotkey_poll_set_freq(unsigned int freq)
2579{
2580 if (!freq)
2581 hotkey_poll_stop_sync();
2582
db25f16d 2583 hotkey_poll_freq = freq;
db25f16d
HMH		 2584}
2585
1bc6b9cd
HMH		 2586#else /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
2587
7f0cf712
HMH		 2588static void hotkey_poll_setup(const bool __unused)
2589{
2590}
2591
2592static void hotkey_poll_setup_safe(const bool __unused)
1bc6b9cd
HMH		 2593{
2594}
2595
2596#endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
2597
01e88f25
HMH		 2598static int hotkey_inputdev_open(struct input_dev *dev)
2599{
2600 switch (tpacpi_lifecycle) {
2601 case TPACPI_LIFE_INIT:
01e88f25 2602 case TPACPI_LIFE_RUNNING:
db25f16d 2603 hotkey_poll_setup_safe(false);
01e88f25 2604 return 0;
b589ea4c
HMH		 2605 case TPACPI_LIFE_EXITING:
2606 return -EBUSY;
01e88f25
HMH		 2607 }
2608
2609 /* Should only happen if tpacpi_lifecycle is corrupt */
2610 BUG();
2611 return -EBUSY;
2612}
2613
2614static void hotkey_inputdev_close(struct input_dev *dev)
2615{
2616 /* disable hotkey polling when possible */
b589ea4c 2617 if (tpacpi_lifecycle != TPACPI_LIFE_EXITING &&
0d922e3b 2618 !(hotkey_source_mask & hotkey_driver_mask))
db25f16d 2619 hotkey_poll_setup_safe(false);
01e88f25 2620}
01e88f25 2621
a0416420
HMH		 2622/* sysfs hotkey enable ------------------------------------------------- */
2623static ssize_t hotkey_enable_show(struct device *dev,
2624 struct device_attribute *attr,
2625 char *buf)
2626{
ae92bd17 2627 int res, status;
a0416420 2628
2586d566
HMH		 2629 printk_deprecated_attribute("hotkey_enable",
2630 "Hotkey reporting is always enabled");
2631
b2c985e7 2632 res = hotkey_status_get(&status);
a0416420
HMH		 2633 if (res)
2634 return res;
2635
2636 return snprintf(buf, PAGE_SIZE, "%d\n", status);
2637}
2638
2639static ssize_t hotkey_enable_store(struct device *dev,
2640 struct device_attribute *attr,
2641 const char *buf, size_t count)
2642{
2643 unsigned long t;
2586d566
HMH		 2644
2645 printk_deprecated_attribute("hotkey_enable",
2646 "Hotkeys can be disabled through hotkey_mask");
a0416420
HMH		 2647
2648 if (parse_strtoul(buf, 1, &t))
2649 return -EINVAL;
2650
2586d566
HMH		 2651 if (t == 0)
2652 return -EPERM;
a0416420 2653
2586d566 2654 return count;
a0416420
HMH		 2655}
2656
2657static struct device_attribute dev_attr_hotkey_enable =
cc4c24e1 2658 __ATTR(hotkey_enable, S_IWUSR | S_IRUGO,
a0416420
HMH		 2659 hotkey_enable_show, hotkey_enable_store);
2660
2661/* sysfs hotkey mask --------------------------------------------------- */
2662static ssize_t hotkey_mask_show(struct device *dev,
2663 struct device_attribute *attr,
2664 char *buf)
2665{
0d922e3b 2666 return snprintf(buf, PAGE_SIZE, "0x%08x\n", hotkey_user_mask);
a0416420
HMH		 2667}
2668
2669static ssize_t hotkey_mask_store(struct device *dev,
2670 struct device_attribute *attr,
2671 const char *buf, size_t count)
2672{
2673 unsigned long t;
b2c985e7 2674 int res;
a0416420 2675
ae92bd17 2676 if (parse_strtoul(buf, 0xffffffffUL, &t))
a0416420
HMH		 2677 return -EINVAL;
2678
7646ea88 2679 if (mutex_lock_killable(&hotkey_mutex))
b2c985e7
HMH		 2680 return -ERESTARTSYS;
2681
0d922e3b 2682 res = hotkey_user_mask_set(t);
01e88f25
HMH		 2683
2684#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
db25f16d 2685 hotkey_poll_setup(true);
01e88f25
HMH		 2686#endif
2687
b2c985e7 2688 mutex_unlock(&hotkey_mutex);
a0416420 2689
56e2c200
HMH		 2690 tpacpi_disclose_usertask("hotkey_mask", "set to 0x%08lx\n", t);
2691
a0416420
HMH		 2692 return (res) ? res : count;
2693}
2694
2695static struct device_attribute dev_attr_hotkey_mask =
cc4c24e1 2696 __ATTR(hotkey_mask, S_IWUSR | S_IRUGO,
a0416420
HMH		 2697 hotkey_mask_show, hotkey_mask_store);
2698
2699/* sysfs hotkey bios_enabled ------------------------------------------- */
2700static ssize_t hotkey_bios_enabled_show(struct device *dev,
2701 struct device_attribute *attr,
2702 char *buf)
2703{
2586d566 2704 return sprintf(buf, "0\n");
a0416420
HMH		 2705}
2706
2707static struct device_attribute dev_attr_hotkey_bios_enabled =
cc4c24e1 2708 __ATTR(hotkey_bios_enabled, S_IRUGO, hotkey_bios_enabled_show, NULL);
a0416420
HMH		 2709
2710/* sysfs hotkey bios_mask ---------------------------------------------- */
2711static ssize_t hotkey_bios_mask_show(struct device *dev,
2712 struct device_attribute *attr,
2713 char *buf)
2714{
06777be6
HMH		 2715 printk_deprecated_attribute("hotkey_bios_mask",
2716 "This attribute is useless.");
ae92bd17 2717 return snprintf(buf, PAGE_SIZE, "0x%08x\n", hotkey_orig_mask);
a0416420
HMH		 2718}
2719
2720static struct device_attribute dev_attr_hotkey_bios_mask =
cc4c24e1 2721 __ATTR(hotkey_bios_mask, S_IRUGO, hotkey_bios_mask_show, NULL);
a0416420 2722
9b010de5
HMH		 2723/* sysfs hotkey all_mask ----------------------------------------------- */
2724static ssize_t hotkey_all_mask_show(struct device *dev,
2725 struct device_attribute *attr,
2726 char *buf)
2727{
01e88f25
HMH		 2728 return snprintf(buf, PAGE_SIZE, "0x%08x\n",
2729 hotkey_all_mask | hotkey_source_mask);
9b010de5
HMH		 2730}
2731
2732static struct device_attribute dev_attr_hotkey_all_mask =
2733 __ATTR(hotkey_all_mask, S_IRUGO, hotkey_all_mask_show, NULL);
2734
2735/* sysfs hotkey recommended_mask --------------------------------------- */
2736static ssize_t hotkey_recommended_mask_show(struct device *dev,
2737 struct device_attribute *attr,
2738 char *buf)
2739{
2740 return snprintf(buf, PAGE_SIZE, "0x%08x\n",
01e88f25
HMH		 2741 (hotkey_all_mask | hotkey_source_mask)
2742 & ~hotkey_reserved_mask);
9b010de5
HMH		 2743}
2744
2745static struct device_attribute dev_attr_hotkey_recommended_mask =
2746 __ATTR(hotkey_recommended_mask, S_IRUGO,
2747 hotkey_recommended_mask_show, NULL);
2748
01e88f25
HMH		 2749#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
2750
2751/* sysfs hotkey hotkey_source_mask ------------------------------------- */
2752static ssize_t hotkey_source_mask_show(struct device *dev,
2753 struct device_attribute *attr,
2754 char *buf)
2755{
2756 return snprintf(buf, PAGE_SIZE, "0x%08x\n", hotkey_source_mask);
2757}
2758
2759static ssize_t hotkey_source_mask_store(struct device *dev,
2760 struct device_attribute *attr,
2761 const char *buf, size_t count)
2762{
2763 unsigned long t;
0d922e3b
HMH		 2764 u32 r_ev;
2765 int rc;
01e88f25
HMH		 2766
2767 if (parse_strtoul(buf, 0xffffffffUL, &t) ||
2768 ((t & ~TPACPI_HKEY_NVRAM_KNOWN_MASK) != 0))
2769 return -EINVAL;
2770
7646ea88 2771 if (mutex_lock_killable(&hotkey_mutex))
01e88f25
HMH		 2772 return -ERESTARTSYS;
2773
2774 HOTKEY_CONFIG_CRITICAL_START
2775 hotkey_source_mask = t;
2776 HOTKEY_CONFIG_CRITICAL_END
2777
0d922e3b
HMH		 2778 rc = hotkey_mask_set((hotkey_user_mask | hotkey_driver_mask) &
2779 ~hotkey_source_mask);
db25f16d 2780 hotkey_poll_setup(true);
0d922e3b
HMH		 2781
2782 /* check if events needed by the driver got disabled */
2783 r_ev = hotkey_driver_mask & ~(hotkey_acpi_mask & hotkey_all_mask)
2784 & ~hotkey_source_mask & TPACPI_HKEY_NVRAM_KNOWN_MASK;
01e88f25
HMH		 2785
2786 mutex_unlock(&hotkey_mutex);
2787
0d922e3b 2788 if (rc < 0)
0978e012
JP		 2789 pr_err("hotkey_source_mask: "
2790 "failed to update the firmware event mask!\n");
0d922e3b
HMH		 2791
2792 if (r_ev)
0978e012
JP		 2793 pr_notice("hotkey_source_mask: "
2794 "some important events were disabled: 0x%04x\n",
2795 r_ev);
0d922e3b 2796
56e2c200
HMH		 2797 tpacpi_disclose_usertask("hotkey_source_mask", "set to 0x%08lx\n", t);
2798
0d922e3b 2799 return (rc < 0) ? rc : count;
01e88f25
HMH		 2800}
2801
2802static struct device_attribute dev_attr_hotkey_source_mask =
2803 __ATTR(hotkey_source_mask, S_IWUSR | S_IRUGO,
2804 hotkey_source_mask_show, hotkey_source_mask_store);
2805
2806/* sysfs hotkey hotkey_poll_freq --------------------------------------- */
2807static ssize_t hotkey_poll_freq_show(struct device *dev,
2808 struct device_attribute *attr,
2809 char *buf)
2810{
2811 return snprintf(buf, PAGE_SIZE, "%d\n", hotkey_poll_freq);
2812}
2813
2814static ssize_t hotkey_poll_freq_store(struct device *dev,
2815 struct device_attribute *attr,
2816 const char *buf, size_t count)
2817{
2818 unsigned long t;
2819
2820 if (parse_strtoul(buf, 25, &t))
2821 return -EINVAL;
2822
7646ea88 2823 if (mutex_lock_killable(&hotkey_mutex))
01e88f25
HMH		 2824 return -ERESTARTSYS;
2825
db25f16d
HMH		 2826 hotkey_poll_set_freq(t);
2827 hotkey_poll_setup(true);
01e88f25 2828
01e88f25
HMH		 2829 mutex_unlock(&hotkey_mutex);
2830
56e2c200
HMH		 2831 tpacpi_disclose_usertask("hotkey_poll_freq", "set to %lu\n", t);
2832
01e88f25
HMH		 2833 return count;
2834}
2835
2836static struct device_attribute dev_attr_hotkey_poll_freq =
2837 __ATTR(hotkey_poll_freq, S_IWUSR | S_IRUGO,
2838 hotkey_poll_freq_show, hotkey_poll_freq_store);
2839
2840#endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
2841
50ebec09 2842/* sysfs hotkey radio_sw (pollable) ------------------------------------ */
74941a69
HMH		 2843static ssize_t hotkey_radio_sw_show(struct device *dev,
2844 struct device_attribute *attr,
2845 char *buf)
2846{
19d337df
JB		 2847 int res;
2848 res = hotkey_get_wlsw();
74941a69
HMH		 2849 if (res < 0)
2850 return res;
2851
19d337df
JB		 2852 /* Opportunistic update */
2853 tpacpi_rfk_update_hwblock_state((res == TPACPI_RFK_RADIO_OFF));
2854
2855 return snprintf(buf, PAGE_SIZE, "%d\n",
2856 (res == TPACPI_RFK_RADIO_OFF) ? 0 : 1);
74941a69
HMH		 2857}
2858
2859static struct device_attribute dev_attr_hotkey_radio_sw =
2860 __ATTR(hotkey_radio_sw, S_IRUGO, hotkey_radio_sw_show, NULL);
2861
50ebec09
HMH		 2862static void hotkey_radio_sw_notify_change(void)
2863{
2864 if (tp_features.hotkey_wlsw)
2865 sysfs_notify(&tpacpi_pdev->dev.kobj, NULL,
2866 "hotkey_radio_sw");
2867}
2868
6c231bd5
HMH		 2869/* sysfs hotkey tablet mode (pollable) --------------------------------- */
2870static ssize_t hotkey_tablet_mode_show(struct device *dev,
2871 struct device_attribute *attr,
2872 char *buf)
2873{
2874 int res, s;
2875 res = hotkey_get_tablet_mode(&s);
2876 if (res < 0)
2877 return res;
2878
2879 return snprintf(buf, PAGE_SIZE, "%d\n", !!s);
2880}
2881
2882static struct device_attribute dev_attr_hotkey_tablet_mode =
2883 __ATTR(hotkey_tablet_mode, S_IRUGO, hotkey_tablet_mode_show, NULL);
2884
2885static void hotkey_tablet_mode_notify_change(void)
2886{
2887 if (tp_features.hotkey_tablet)
2888 sysfs_notify(&tpacpi_pdev->dev.kobj, NULL,
2889 "hotkey_tablet_mode");
2890}
2891
ff80f137
HMH		 2892/* sysfs hotkey report_mode -------------------------------------------- */
2893static ssize_t hotkey_report_mode_show(struct device *dev,
2894 struct device_attribute *attr,
2895 char *buf)
2896{
2897 return snprintf(buf, PAGE_SIZE, "%d\n",
2898 (hotkey_report_mode != 0) ? hotkey_report_mode : 1);
2899}
2900
2901static struct device_attribute dev_attr_hotkey_report_mode =
2902 __ATTR(hotkey_report_mode, S_IRUGO, hotkey_report_mode_show, NULL);
2903
50ebec09 2904/* sysfs wakeup reason (pollable) -------------------------------------- */
a713b4d7
HMH		 2905static ssize_t hotkey_wakeup_reason_show(struct device *dev,
2906 struct device_attribute *attr,
2907 char *buf)
2908{
2909 return snprintf(buf, PAGE_SIZE, "%d\n", hotkey_wakeup_reason);
2910}
2911
2912static struct device_attribute dev_attr_hotkey_wakeup_reason =
2913 __ATTR(wakeup_reason, S_IRUGO, hotkey_wakeup_reason_show, NULL);
2914
1d5a2b54 2915static void hotkey_wakeup_reason_notify_change(void)
50ebec09 2916{
0d922e3b
HMH		 2917 sysfs_notify(&tpacpi_pdev->dev.kobj, NULL,
2918 "wakeup_reason");
50ebec09
HMH		 2919}
2920
2921/* sysfs wakeup hotunplug_complete (pollable) -------------------------- */
a713b4d7
HMH		 2922static ssize_t hotkey_wakeup_hotunplug_complete_show(struct device *dev,
2923 struct device_attribute *attr,
2924 char *buf)
2925{
2926 return snprintf(buf, PAGE_SIZE, "%d\n", hotkey_autosleep_ack);
2927}
2928
2929static struct device_attribute dev_attr_hotkey_wakeup_hotunplug_complete =
2930 __ATTR(wakeup_hotunplug_complete, S_IRUGO,
2931 hotkey_wakeup_hotunplug_complete_show, NULL);
2932
1d5a2b54 2933static void hotkey_wakeup_hotunplug_complete_notify_change(void)
50ebec09 2934{
0d922e3b
HMH		 2935 sysfs_notify(&tpacpi_pdev->dev.kobj, NULL,
2936 "wakeup_hotunplug_complete");
50ebec09
HMH		 2937}
2938
a0416420
HMH		 2939/* --------------------------------------------------------------------- */
2940
ff80f137
HMH		 2941static struct attribute *hotkey_attributes[] __initdata = {
2942 &dev_attr_hotkey_enable.attr,
01e88f25 2943 &dev_attr_hotkey_bios_enabled.attr,
0d922e3b 2944 &dev_attr_hotkey_bios_mask.attr,
ff80f137 2945 &dev_attr_hotkey_report_mode.attr,
0d922e3b
HMH		 2946 &dev_attr_hotkey_wakeup_reason.attr,
2947 &dev_attr_hotkey_wakeup_hotunplug_complete.attr,
01e88f25
HMH		 2948 &dev_attr_hotkey_mask.attr,
2949 &dev_attr_hotkey_all_mask.attr,
2950 &dev_attr_hotkey_recommended_mask.attr,
0d922e3b 2951#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
01e88f25
HMH		 2952 &dev_attr_hotkey_source_mask.attr,
2953 &dev_attr_hotkey_poll_freq.attr,
2954#endif
ff80f137
HMH		 2955};
2956
19d337df
JB		 2957/*
2958 * Sync both the hw and sw blocking state of all switches
2959 */
733e27c1
HMH		 2960static void tpacpi_send_radiosw_update(void)
2961{
2962 int wlsw;
2963
19d337df
JB		 2964 /*
2965 * We must sync all rfkill controllers *before* issuing any
2966 * rfkill input events, or we will race the rfkill core input
2967 * handler.
2968 *
c8440336 2969 * tpacpi_inputdev_send_mutex works as a synchronization point
19d337df
JB		 2970 * for the above.
2971 *
2972 * We optimize to avoid numerous calls to hotkey_get_wlsw.
2973 */
2974
2975 wlsw = hotkey_get_wlsw();
2976
2977 /* Sync hw blocking state first if it is hw-blocked */
2978 if (wlsw == TPACPI_RFK_RADIO_OFF)
2979 tpacpi_rfk_update_hwblock_state(true);
0e74dc26 2980
19d337df
JB		 2981 /* Sync sw blocking state */
2982 tpacpi_rfk_update_swstate_all();
2983
2984 /* Sync hw blocking state last if it is hw-unblocked */
2985 if (wlsw == TPACPI_RFK_RADIO_ON)
2986 tpacpi_rfk_update_hwblock_state(false);
2987
2988 /* Issue rfkill input event for WLSW switch */
2989 if (!(wlsw < 0)) {
733e27c1
HMH		 2990 mutex_lock(&tpacpi_inputdev_send_mutex);
2991
2992 input_report_switch(tpacpi_inputdev,
19d337df 2993 SW_RFKILL_ALL, (wlsw > 0));
733e27c1
HMH		 2994 input_sync(tpacpi_inputdev);
2995
2996 mutex_unlock(&tpacpi_inputdev_send_mutex);
2997 }
19d337df
JB		 2998
2999 /*
3000 * this can be unconditional, as we will poll state again
3001 * if userspace uses the notify to read data
3002 */
733e27c1
HMH		 3003 hotkey_radio_sw_notify_change();
3004}
3005
9c0a76e1
HMH		 3006static void hotkey_exit(void)
3007{
3008#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
db25f16d 3009 mutex_lock(&hotkey_mutex);
9c0a76e1 3010 hotkey_poll_stop_sync();
db25f16d 3011 mutex_unlock(&hotkey_mutex);
9c0a76e1
HMH		 3012#endif
3013
3014 if (hotkey_dev_attributes)
3015 delete_attr_set(hotkey_dev_attributes, &tpacpi_pdev->dev.kobj);
3016
3017 kfree(hotkey_keycode_map);
3018
4be73005 3019 dbg_printk(TPACPI_DBG_EXIT | TPACPI_DBG_HKEY,
0d922e3b
HMH		 3020 "restoring original HKEY status and mask\n");
3021 /* yes, there is a bitwise or below, we want the
3022 * functions to be called even if one of them fail */
3023 if (((tp_features.hotkey_mask &&
3024 hotkey_mask_set(hotkey_orig_mask)) |
3025 hotkey_status_set(false)) != 0)
0978e012 3026 pr_err("failed to restore hot key mask "
4be73005 3027 "to BIOS defaults\n");
9c0a76e1
HMH		 3028}
3029
de4c8cc7
HMH		 3030static void __init hotkey_unmap(const unsigned int scancode)
3031{
3032 if (hotkey_keycode_map[scancode] != KEY_RESERVED) {
3033 clear_bit(hotkey_keycode_map[scancode],
3034 tpacpi_inputdev->keybit);
3035 hotkey_keycode_map[scancode] = KEY_RESERVED;
3036 }
3037}
3038
0d922e3b
HMH		 3039/*
3040 * HKEY quirks:
3041 * TPACPI_HK_Q_INIMASK: Supports FN+F3,FN+F4,FN+F12
3042 */
3043
3044#define TPACPI_HK_Q_INIMASK 0x0001
3045
3046static const struct tpacpi_quirk tpacpi_hotkey_qtable[] __initconst = {
3047 TPACPI_Q_IBM('I', 'H', TPACPI_HK_Q_INIMASK), /* 600E */
3048 TPACPI_Q_IBM('I', 'N', TPACPI_HK_Q_INIMASK), /* 600E */
3049 TPACPI_Q_IBM('I', 'D', TPACPI_HK_Q_INIMASK), /* 770, 770E, 770ED */
3050 TPACPI_Q_IBM('I', 'W', TPACPI_HK_Q_INIMASK), /* A20m */
3051 TPACPI_Q_IBM('I', 'V', TPACPI_HK_Q_INIMASK), /* A20p */
3052 TPACPI_Q_IBM('1', '0', TPACPI_HK_Q_INIMASK), /* A21e, A22e */
3053 TPACPI_Q_IBM('K', 'U', TPACPI_HK_Q_INIMASK), /* A21e */
3054 TPACPI_Q_IBM('K', 'X', TPACPI_HK_Q_INIMASK), /* A21m, A22m */
3055 TPACPI_Q_IBM('K', 'Y', TPACPI_HK_Q_INIMASK), /* A21p, A22p */
3056 TPACPI_Q_IBM('1', 'B', TPACPI_HK_Q_INIMASK), /* A22e */
3057 TPACPI_Q_IBM('1', '3', TPACPI_HK_Q_INIMASK), /* A22m */
3058 TPACPI_Q_IBM('1', 'E', TPACPI_HK_Q_INIMASK), /* A30/p (0) */
3059 TPACPI_Q_IBM('1', 'C', TPACPI_HK_Q_INIMASK), /* R30 */
3060 TPACPI_Q_IBM('1', 'F', TPACPI_HK_Q_INIMASK), /* R31 */
3061 TPACPI_Q_IBM('I', 'Y', TPACPI_HK_Q_INIMASK), /* T20 */
3062 TPACPI_Q_IBM('K', 'Z', TPACPI_HK_Q_INIMASK), /* T21 */
3063 TPACPI_Q_IBM('1', '6', TPACPI_HK_Q_INIMASK), /* T22 */
3064 TPACPI_Q_IBM('I', 'Z', TPACPI_HK_Q_INIMASK), /* X20, X21 */
3065 TPACPI_Q_IBM('1', 'D', TPACPI_HK_Q_INIMASK), /* X22, X23, X24 */
3066};
3067
fc6e7568
HMH		 3068typedef u16 tpacpi_keymap_entry_t;
3069typedef tpacpi_keymap_entry_t tpacpi_keymap_t[TPACPI_HOTKEY_MAP_LEN];
d1e14dca 3070
a5763f22 3071static int __init hotkey_init(struct ibm_init_struct *iibm)
56b6aeb0 3072{
0f089147
HMH		 3073 /* Requirements for changing the default keymaps:
3074 *
3075 * 1. Many of the keys are mapped to KEY_RESERVED for very
3076 * good reasons. Do not change them unless you have deep
3077 * knowledge on the IBM and Lenovo ThinkPad firmware for
3078 * the various ThinkPad models. The driver behaves
3079 * differently for KEY_RESERVED: such keys have their
3080 * hot key mask *unset* in mask_recommended, and also
3081 * in the initial hot key mask programmed into the
3082 * firmware at driver load time, which means the firm-
3083 * ware may react very differently if you change them to
3084 * something else;
3085 *
3086 * 2. You must be subscribed to the linux-thinkpad and
3087 * ibm-acpi-devel mailing lists, and you should read the
3088 * list archives since 2007 if you want to change the
3089 * keymaps. This requirement exists so that you will
3090 * know the past history of problems with the thinkpad-
3091 * acpi driver keymaps, and also that you will be
3092 * listening to any bug reports;
3093 *
3094 * 3. Do not send thinkpad-acpi specific patches directly to
3095 * for merging, *ever*. Send them to the linux-acpi
3096 * mailinglist for comments. Merging is to be done only
3097 * through acpi-test and the ACPI maintainer.
3098 *
3099 * If the above is too much to ask, don't change the keymap.
3100 * Ask the thinkpad-acpi maintainer to do it, instead.
3101 */
d1e14dca
HMH		 3102
3103 enum keymap_index {
3104 TPACPI_KEYMAP_IBM_GENERIC = 0,
3105 TPACPI_KEYMAP_LENOVO_GENERIC,
3106 };
3107
3108 static const tpacpi_keymap_t tpacpi_keymaps[] __initconst = {
3109 /* Generic keymap for IBM ThinkPads */
3110 [TPACPI_KEYMAP_IBM_GENERIC] = {
edf0e0e5 3111 /* Scan Codes 0x00 to 0x0B: ACPI HKEY FN+F1..F12 */
d1e14dca 3112 KEY_FN_F1, KEY_BATTERY, KEY_COFFEE, KEY_SLEEP,
edf0e0e5
HMH		 3113 KEY_WLAN, KEY_FN_F6, KEY_SWITCHVIDEOMODE, KEY_FN_F8,
3114 KEY_FN_F9, KEY_FN_F10, KEY_FN_F11, KEY_SUSPEND,
0f089147
HMH		 3115
3116 /* Scan codes 0x0C to 0x1F: Other ACPI HKEY hot keys */
edf0e0e5
HMH		 3117 KEY_UNKNOWN, /* 0x0C: FN+BACKSPACE */
3118 KEY_UNKNOWN, /* 0x0D: FN+INSERT */
3119 KEY_UNKNOWN, /* 0x0E: FN+DELETE */
0f089147 3120
0d922e3b 3121 /* brightness: firmware always reacts to them */
e927c08d 3122 KEY_RESERVED, /* 0x0F: FN+HOME (brightness up) */
e927c08d 3123 KEY_RESERVED, /* 0x10: FN+END (brightness down) */
0f089147
HMH		 3124
3125 /* Thinklight: firmware always react to it */
edf0e0e5 3126 KEY_RESERVED, /* 0x11: FN+PGUP (thinklight toggle) */
0f089147 3127
edf0e0e5
HMH		 3128 KEY_UNKNOWN, /* 0x12: FN+PGDOWN */
3129 KEY_ZOOM, /* 0x13: FN+SPACE (zoom) */
0f089147
HMH		 3130
3131 /* Volume: firmware always react to it and reprograms
3132 * the built-in *extra* mixer. Never map it to control
3133 * another mixer by default. */
e927c08d
HMH		 3134 KEY_RESERVED, /* 0x14: VOLUME UP */
3135 KEY_RESERVED, /* 0x15: VOLUME DOWN */
3136 KEY_RESERVED, /* 0x16: MUTE */
0f089147 3137
edf0e0e5 3138 KEY_VENDOR, /* 0x17: Thinkpad/AccessIBM/Lenovo */
0f089147 3139
edf0e0e5
HMH		 3140 /* (assignments unknown, please report if found) */
3141 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN,
3142 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN,
d1e14dca
HMH		 3143 },
3144
3145 /* Generic keymap for Lenovo ThinkPads */
3146 [TPACPI_KEYMAP_LENOVO_GENERIC] = {
edf0e0e5
HMH		 3147 /* Scan Codes 0x00 to 0x0B: ACPI HKEY FN+F1..F12 */
3148 KEY_FN_F1, KEY_COFFEE, KEY_BATTERY, KEY_SLEEP,
2b754262 3149 KEY_WLAN, KEY_CAMERA, KEY_SWITCHVIDEOMODE, KEY_FN_F8,
edf0e0e5 3150 KEY_FN_F9, KEY_FN_F10, KEY_FN_F11, KEY_SUSPEND,
0f089147
HMH		 3151
3152 /* Scan codes 0x0C to 0x1F: Other ACPI HKEY hot keys */
edf0e0e5
HMH		 3153 KEY_UNKNOWN, /* 0x0C: FN+BACKSPACE */
3154 KEY_UNKNOWN, /* 0x0D: FN+INSERT */
3155 KEY_UNKNOWN, /* 0x0E: FN+DELETE */
0f089147 3156
de4c8cc7
HMH		 3157 /* These should be enabled --only-- when ACPI video
3158 * is disabled (i.e. in "vendor" mode), and are handled
3159 * in a special way by the init code */
3160 KEY_BRIGHTNESSUP, /* 0x0F: FN+HOME (brightness up) */
3161 KEY_BRIGHTNESSDOWN, /* 0x10: FN+END (brightness down) */
0f089147 3162
edf0e0e5 3163 KEY_RESERVED, /* 0x11: FN+PGUP (thinklight toggle) */
0f089147 3164
edf0e0e5
HMH		 3165 KEY_UNKNOWN, /* 0x12: FN+PGDOWN */
3166 KEY_ZOOM, /* 0x13: FN+SPACE (zoom) */
0f089147
HMH		 3167
3168 /* Volume: z60/z61, T60 (BIOS version?): firmware always
3169 * react to it and reprograms the built-in *extra* mixer.
3170 * Never map it to control another mixer by default.
3171 *
3172 * T60?, T61, R60?, R61: firmware and EC tries to send
3173 * these over the regular keyboard, so these are no-ops,
3174 * but there are still weird bugs re. MUTE, so do not
3175 * change unless you get test reports from all Lenovo
3176 * models. May cause the BIOS to interfere with the
3177 * HDA mixer.
3178 */
e927c08d
HMH		 3179 KEY_RESERVED, /* 0x14: VOLUME UP */
3180 KEY_RESERVED, /* 0x15: VOLUME DOWN */
3181 KEY_RESERVED, /* 0x16: MUTE */
0f089147 3182
edf0e0e5 3183 KEY_VENDOR, /* 0x17: Thinkpad/AccessIBM/Lenovo */
0f089147 3184
33009557
AL		 3185 /* (assignments unknown, please report if found) */
3186 KEY_UNKNOWN, KEY_UNKNOWN,
3187
3188 /*
3189 * The mic mute button only sends 0x1a. It does not
3190 * automatically mute the mic or change the mute light.
3191 */
3192 KEY_MICMUTE, /* 0x1a: Mic mute (since ?400 or so) */
3193
edf0e0e5
HMH		 3194 /* (assignments unknown, please report if found) */
3195 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN,
33009557 3196 KEY_UNKNOWN,
d1e14dca 3197 },
edf0e0e5
HMH		 3198 };
3199
d1e14dca
HMH		 3200 static const struct tpacpi_quirk tpacpi_keymap_qtable[] __initconst = {
3201 /* Generic maps (fallback) */
3202 {
3203 .vendor = PCI_VENDOR_ID_IBM,
3204 .bios = TPACPI_MATCH_ANY, .ec = TPACPI_MATCH_ANY,
3205 .quirks = TPACPI_KEYMAP_IBM_GENERIC,
3206 },
3207 {
3208 .vendor = PCI_VENDOR_ID_LENOVO,
3209 .bios = TPACPI_MATCH_ANY, .ec = TPACPI_MATCH_ANY,
3210 .quirks = TPACPI_KEYMAP_LENOVO_GENERIC,
3211 },
3212 };
3213
3214#define TPACPI_HOTKEY_MAP_SIZE sizeof(tpacpi_keymap_t)
fc6e7568 3215#define TPACPI_HOTKEY_MAP_TYPESIZE sizeof(tpacpi_keymap_entry_t)
edf0e0e5 3216
6a38abbf 3217 int res, i;
74941a69 3218 int status;
1b6521dc 3219 int hkeyv;
d89a727a
HMH		 3220 bool radiosw_state = false;
3221 bool tabletsw_state = false;
b86c4722 3222
0d922e3b 3223 unsigned long quirks;
d1e14dca 3224 unsigned long keymap_id;
0d922e3b 3225
56e2c200
HMH		 3226 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY,
3227 "initializing hotkey subdriver\n");
fe08bc4b 3228
6a38abbf 3229 BUG_ON(!tpacpi_inputdev);
01e88f25
HMH		 3230 BUG_ON(tpacpi_inputdev->open != NULL ||
3231 tpacpi_inputdev->close != NULL);
6a38abbf 3232
e0c7dfe7 3233 TPACPI_ACPIHANDLE_INIT(hkey);
40ca9fdf 3234 mutex_init(&hotkey_mutex);
5fba344c 3235
01e88f25
HMH		 3236#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
3237 mutex_init(&hotkey_thread_mutex);
3238 mutex_init(&hotkey_thread_data_mutex);
3239#endif
3240
56b6aeb0 3241 /* hotkey not supported on 570 */
d8fd94d9 3242 tp_features.hotkey = hkey_handle != NULL;
56b6aeb0 3243
56e2c200
HMH		 3244 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY,
3245 "hotkeys are %s\n",
d8fd94d9 3246 str_supported(tp_features.hotkey));
fe08bc4b 3247
9c0a76e1
HMH		 3248 if (!tp_features.hotkey)
3249 return 1;
a0416420 3250
0d922e3b
HMH		 3251 quirks = tpacpi_check_quirks(tpacpi_hotkey_qtable,
3252 ARRAY_SIZE(tpacpi_hotkey_qtable));
3253
d64c81c4
HMH		 3254 tpacpi_disable_brightness_delay();
3255
0d922e3b
HMH		 3256 /* MUST have enough space for all attributes to be added to
3257 * hotkey_dev_attributes */
3258 hotkey_dev_attributes = create_attr_set(
3259 ARRAY_SIZE(hotkey_attributes) + 2,
3260 NULL);
9c0a76e1
HMH		 3261 if (!hotkey_dev_attributes)
3262 return -ENOMEM;
3263 res = add_many_to_attr_set(hotkey_dev_attributes,
3264 hotkey_attributes,
3265 ARRAY_SIZE(hotkey_attributes));
3266 if (res)
3267 goto err_exit;
3268
0d922e3b 3269 /* mask not supported on 600e/x, 770e, 770x, A21e, A2xm/p,
9c0a76e1
HMH		 3270 A30, R30, R31, T20-22, X20-21, X22-24. Detected by checking
3271 for HKEY interface version 0x100 */
3272 if (acpi_evalf(hkey_handle, &hkeyv, "MHKV", "qd")) {
3273 if ((hkeyv >> 8) != 1) {
0978e012
JP		 3274 pr_err("unknown version of the HKEY interface: 0x%x\n",
3275 hkeyv);
3276 pr_err("please report this to %s\n", TPACPI_MAIL);
9c0a76e1
HMH		 3277 } else {
3278 /*
3279 * MHKV 0x100 in A31, R40, R40e,
3280 * T4x, X31, and later
3281 */
56e2c200
HMH		 3282 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY,
3283 "firmware HKEY interface version: 0x%x\n",
3284 hkeyv);
0d922e3b
HMH		 3285
3286 /* Paranoia check AND init hotkey_all_mask */
3287 if (!acpi_evalf(hkey_handle, &hotkey_all_mask,
3288 "MHKA", "qd")) {
0978e012 3289 pr_err("missing MHKA handler, "
0d922e3b
HMH		 3290 "please report this to %s\n",
3291 TPACPI_MAIL);
3292 /* Fallback: pre-init for FN+F3,F4,F12 */
3293 hotkey_all_mask = 0x080cU;
3294 } else {
3295 tp_features.hotkey_mask = 1;
3296 }
1b6521dc 3297 }
9c0a76e1 3298 }
56b6aeb0 3299
56e2c200
HMH		 3300 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY,
3301 "hotkey masks are %s\n",
9c0a76e1 3302 str_supported(tp_features.hotkey_mask));
fe08bc4b 3303
0d922e3b
HMH		 3304 /* Init hotkey_all_mask if not initialized yet */
3305 if (!tp_features.hotkey_mask && !hotkey_all_mask &&
3306 (quirks & TPACPI_HK_Q_INIMASK))
3307 hotkey_all_mask = 0x080cU; /* FN+F12, FN+F4, FN+F3 */
9b010de5 3308
0d922e3b 3309 /* Init hotkey_acpi_mask and hotkey_orig_mask */
9c0a76e1 3310 if (tp_features.hotkey_mask) {
0d922e3b
HMH		 3311 /* hotkey_source_mask *must* be zero for
3312 * the first hotkey_mask_get to return hotkey_orig_mask */
9c0a76e1
HMH		 3313 res = hotkey_mask_get();
3314 if (res)
3315 goto err_exit;
3316
0d922e3b
HMH		 3317 hotkey_orig_mask = hotkey_acpi_mask;
3318 } else {
3319 hotkey_orig_mask = hotkey_all_mask;
3320 hotkey_acpi_mask = hotkey_all_mask;
9c0a76e1 3321 }
74941a69 3322
a73f3091
HMH		 3323#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
3324 if (dbg_wlswemul) {
3325 tp_features.hotkey_wlsw = 1;
d89a727a 3326 radiosw_state = !!tpacpi_wlsw_emulstate;
0978e012 3327 pr_info("radio switch emulation enabled\n");
a73f3091
HMH		 3328 } else
3329#endif
9c0a76e1
HMH		 3330 /* Not all thinkpads have a hardware radio switch */
3331 if (acpi_evalf(hkey_handle, &status, "WLSW", "qd")) {
3332 tp_features.hotkey_wlsw = 1;
d89a727a 3333 radiosw_state = !!status;
0978e012 3334 pr_info("radio switch found; radios are %s\n",
9c0a76e1 3335 enabled(status, 0));
3a872080
HMH		 3336 }
3337 if (tp_features.hotkey_wlsw)
9c0a76e1
HMH		 3338 res = add_to_attr_set(hotkey_dev_attributes,
3339 &dev_attr_hotkey_radio_sw.attr);
74941a69 3340
9c0a76e1
HMH		 3341 /* For X41t, X60t, X61t Tablets... */
3342 if (!res && acpi_evalf(hkey_handle, &status, "MHKG", "qd")) {
3343 tp_features.hotkey_tablet = 1;
d89a727a 3344 tabletsw_state = !!(status & TP_HOTKEY_TABLET_MASK);
0978e012 3345 pr_info("possible tablet mode switch found; "
9c0a76e1 3346 "ThinkPad in %s mode\n",
d89a727a 3347 (tabletsw_state) ? "tablet" : "laptop");
9c0a76e1
HMH		 3348 res = add_to_attr_set(hotkey_dev_attributes,
3349 &dev_attr_hotkey_tablet_mode.attr);
3350 }
6c231bd5 3351
9c0a76e1
HMH		 3352 if (!res)
3353 res = register_attr_set_with_sysfs(
3354 hotkey_dev_attributes,
3355 &tpacpi_pdev->dev.kobj);
3356 if (res)
3357 goto err_exit;
6a38abbf 3358
9c0a76e1 3359 /* Set up key map */
9c0a76e1
HMH		 3360 hotkey_keycode_map = kmalloc(TPACPI_HOTKEY_MAP_SIZE,
3361 GFP_KERNEL);
3362 if (!hotkey_keycode_map) {
0978e012 3363 pr_err("failed to allocate memory for key map\n");
9c0a76e1
HMH		 3364 res = -ENOMEM;
3365 goto err_exit;
3366 }
edf0e0e5 3367
d1e14dca
HMH		 3368 keymap_id = tpacpi_check_quirks(tpacpi_keymap_qtable,
3369 ARRAY_SIZE(tpacpi_keymap_qtable));
3370 BUG_ON(keymap_id >= ARRAY_SIZE(tpacpi_keymaps));
3371 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY,
3372 "using keymap number %lu\n", keymap_id);
3373
3374 memcpy(hotkey_keycode_map, &tpacpi_keymaps[keymap_id],
3375 TPACPI_HOTKEY_MAP_SIZE);
edf0e0e5 3376
792979c8 3377 input_set_capability(tpacpi_inputdev, EV_MSC, MSC_SCAN);
9c0a76e1
HMH		 3378 tpacpi_inputdev->keycodesize = TPACPI_HOTKEY_MAP_TYPESIZE;
3379 tpacpi_inputdev->keycodemax = TPACPI_HOTKEY_MAP_LEN;
3380 tpacpi_inputdev->keycode = hotkey_keycode_map;
3381 for (i = 0; i < TPACPI_HOTKEY_MAP_LEN; i++) {
3382 if (hotkey_keycode_map[i] != KEY_RESERVED) {
792979c8
HMH		 3383 input_set_capability(tpacpi_inputdev, EV_KEY,
3384 hotkey_keycode_map[i]);
9c0a76e1
HMH		 3385 } else {
3386 if (i < sizeof(hotkey_reserved_mask)*8)
3387 hotkey_reserved_mask |= 1 << i;
6a38abbf 3388 }
9c0a76e1 3389 }
6a38abbf 3390
9c0a76e1 3391 if (tp_features.hotkey_wlsw) {
792979c8 3392 input_set_capability(tpacpi_inputdev, EV_SW, SW_RFKILL_ALL);
d89a727a
HMH		 3393 input_report_switch(tpacpi_inputdev,
3394 SW_RFKILL_ALL, radiosw_state);
9c0a76e1
HMH		 3395 }
3396 if (tp_features.hotkey_tablet) {
792979c8 3397 input_set_capability(tpacpi_inputdev, EV_SW, SW_TABLET_MODE);
d89a727a
HMH		 3398 input_report_switch(tpacpi_inputdev,
3399 SW_TABLET_MODE, tabletsw_state);
9c0a76e1 3400 }
5c29d58f 3401
9c0a76e1 3402 /* Do not issue duplicate brightness change events to
77775838
HMH		 3403 * userspace. tpacpi_detect_brightness_capabilities() must have
3404 * been called before this point */
8bf3d4c5 3405 if (tp_features.bright_acpimode && acpi_video_backlight_support()) {
0978e012
JP		 3406 pr_info("This ThinkPad has standard ACPI backlight "
3407 "brightness control, supported by the ACPI "
3408 "video driver\n");
3409 pr_notice("Disabling thinkpad-acpi brightness events "
3410 "by default...\n");
9c0a76e1 3411
de4c8cc7
HMH		 3412 /* Disable brightness up/down on Lenovo thinkpads when
3413 * ACPI is handling them, otherwise it is plain impossible
3414 * for userspace to do something even remotely sane */
9c0a76e1
HMH		 3415 hotkey_reserved_mask |=
3416 (1 << TP_ACPI_HOTKEYSCAN_FNHOME)
3417 | (1 << TP_ACPI_HOTKEYSCAN_FNEND);
de4c8cc7
HMH		 3418 hotkey_unmap(TP_ACPI_HOTKEYSCAN_FNHOME);
3419 hotkey_unmap(TP_ACPI_HOTKEYSCAN_FNEND);
9c0a76e1 3420 }
ff80f137 3421
230d8cf2 3422#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
0d922e3b
HMH		 3423 hotkey_source_mask = TPACPI_HKEY_NVRAM_GOOD_MASK
3424 & ~hotkey_all_mask
3425 & ~hotkey_reserved_mask;
230d8cf2
HMH		 3426
3427 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY,
3428 "hotkey source mask 0x%08x, polling freq %u\n",
3429 hotkey_source_mask, hotkey_poll_freq);
3430#endif
3431
56e2c200
HMH		 3432 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY,
3433 "enabling firmware HKEY event interface...\n");
2586d566 3434 res = hotkey_status_set(true);
9c0a76e1
HMH		 3435 if (res) {
3436 hotkey_exit();
3437 return res;
3438 }
0d922e3b
HMH		 3439 res = hotkey_mask_set(((hotkey_all_mask & ~hotkey_reserved_mask)
3440 | hotkey_driver_mask)
3441 & ~hotkey_source_mask);
9c0a76e1
HMH		 3442 if (res < 0 && res != -ENXIO) {
3443 hotkey_exit();
3444 return res;
3445 }
0d922e3b
HMH		 3446 hotkey_user_mask = (hotkey_acpi_mask | hotkey_source_mask)
3447 & ~hotkey_reserved_mask;
3448 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY,
3449 "initial masks: user=0x%08x, fw=0x%08x, poll=0x%08x\n",
3450 hotkey_user_mask, hotkey_acpi_mask, hotkey_source_mask);
01e88f25 3451
56e2c200
HMH		 3452 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY,
3453 "legacy ibm/hotkey event reporting over procfs %s\n",
9c0a76e1
HMH		 3454 (hotkey_report_mode < 2) ?
3455 "enabled" : "disabled");
01e88f25 3456
9c0a76e1
HMH		 3457 tpacpi_inputdev->open = &hotkey_inputdev_open;
3458 tpacpi_inputdev->close = &hotkey_inputdev_close;
56b6aeb0 3459
db25f16d 3460 hotkey_poll_setup_safe(true);
56b6aeb0 3461
9c0a76e1 3462 return 0;
01e88f25 3463
9c0a76e1
HMH		 3464err_exit:
3465 delete_attr_set(hotkey_dev_attributes, &tpacpi_pdev->dev.kobj);
3466 hotkey_dev_attributes = NULL;
a0416420 3467
9c0a76e1 3468 return (res < 0)? res : 1;
56b6aeb0
HMH		 3469}
3470
3827e7a3
HMH		 3471static bool hotkey_notify_hotkey(const u32 hkey,
3472 bool *send_acpi_ev,
3473 bool *ignore_acpi_ev)
3474{
3475 /* 0x1000-0x1FFF: key presses */
3476 unsigned int scancode = hkey & 0xfff;
3477 *send_acpi_ev = true;
3478 *ignore_acpi_ev = false;
3479
34a656d2
HMH		 3480 /* HKEY event 0x1001 is scancode 0x00 */
3481 if (scancode > 0 && scancode <= TPACPI_HOTKEY_MAP_LEN) {
3827e7a3
HMH		 3482 scancode--;
3483 if (!(hotkey_source_mask & (1 << scancode))) {
0d922e3b 3484 tpacpi_input_send_key_masked(scancode);
3827e7a3
HMH		 3485 *send_acpi_ev = false;
3486 } else {
3487 *ignore_acpi_ev = true;
3488 }
3489 return true;
3490 }
3491 return false;
3492}
3493
3494static bool hotkey_notify_wakeup(const u32 hkey,
3495 bool *send_acpi_ev,
3496 bool *ignore_acpi_ev)
3497{
3498 /* 0x2000-0x2FFF: Wakeup reason */
3499 *send_acpi_ev = true;
3500 *ignore_acpi_ev = false;
3501
3502 switch (hkey) {
67bcae6e
HMH		 3503 case TP_HKEY_EV_WKUP_S3_UNDOCK: /* suspend, undock */
3504 case TP_HKEY_EV_WKUP_S4_UNDOCK: /* hibernation, undock */
3827e7a3
HMH		 3505 hotkey_wakeup_reason = TP_ACPI_WAKEUP_UNDOCK;
3506 *ignore_acpi_ev = true;
3507 break;
3508
67bcae6e
HMH		 3509 case TP_HKEY_EV_WKUP_S3_BAYEJ: /* suspend, bay eject */
3510 case TP_HKEY_EV_WKUP_S4_BAYEJ: /* hibernation, bay eject */
3827e7a3
HMH		 3511 hotkey_wakeup_reason = TP_ACPI_WAKEUP_BAYEJ;
3512 *ignore_acpi_ev = true;
3513 break;
3514
67bcae6e
HMH		 3515 case TP_HKEY_EV_WKUP_S3_BATLOW: /* Battery on critical low level/S3 */
3516 case TP_HKEY_EV_WKUP_S4_BATLOW: /* Battery on critical low level/S4 */
0978e012 3517 pr_alert("EMERGENCY WAKEUP: battery almost empty\n");
106b4e66
HMH		 3518 /* how to auto-heal: */
3519 /* 2313: woke up from S3, go to S4/S5 */
3520 /* 2413: woke up from S4, go to S5 */
3521 break;
3522
3827e7a3
HMH		 3523 default:
3524 return false;
3525 }
3526
3527 if (hotkey_wakeup_reason != TP_ACPI_WAKEUP_NONE) {
0978e012 3528 pr_info("woke up due to a hot-unplug request...\n");
3827e7a3
HMH		 3529 hotkey_wakeup_reason_notify_change();
3530 }
3531 return true;
3532}
3533
a50245af
HMH		 3534static bool hotkey_notify_dockevent(const u32 hkey,
3535 bool *send_acpi_ev,
3536 bool *ignore_acpi_ev)
3537{
3538 /* 0x4000-0x4FFF: dock-related events */
3539 *send_acpi_ev = true;
3540 *ignore_acpi_ev = false;
3541
3542 switch (hkey) {
3543 case TP_HKEY_EV_UNDOCK_ACK:
3544 /* ACPI undock operation completed after wakeup */
3545 hotkey_autosleep_ack = 1;
3546 pr_info("undocked\n");
3547 hotkey_wakeup_hotunplug_complete_notify_change();
3548 return true;
3549
3550 case TP_HKEY_EV_HOTPLUG_DOCK: /* docked to port replicator */
3551 pr_info("docked into hotplug port replicator\n");
3552 return true;
3553 case TP_HKEY_EV_HOTPLUG_UNDOCK: /* undocked from port replicator */
3554 pr_info("undocked from hotplug port replicator\n");
3555 return true;
3556
3557 default:
3558 return false;
3559 }
3560}
3561
3827e7a3
HMH		 3562static bool hotkey_notify_usrevent(const u32 hkey,
3563 bool *send_acpi_ev,
3564 bool *ignore_acpi_ev)
3565{
3566 /* 0x5000-0x5FFF: human interface helpers */
3567 *send_acpi_ev = true;
3568 *ignore_acpi_ev = false;
3569
3570 switch (hkey) {
67bcae6e
HMH		 3571 case TP_HKEY_EV_PEN_INSERTED: /* X61t: tablet pen inserted into bay */
3572 case TP_HKEY_EV_PEN_REMOVED: /* X61t: tablet pen removed from bay */
3827e7a3
HMH		 3573 return true;
3574
67bcae6e
HMH		 3575 case TP_HKEY_EV_TABLET_TABLET: /* X41t-X61t: tablet mode */
3576 case TP_HKEY_EV_TABLET_NOTEBOOK: /* X41t-X61t: normal mode */
3827e7a3
HMH		 3577 tpacpi_input_send_tabletsw();
3578 hotkey_tablet_mode_notify_change();
3579 *send_acpi_ev = false;
3580 return true;
3581
67bcae6e
HMH		 3582 case TP_HKEY_EV_LID_CLOSE: /* Lid closed */
3583 case TP_HKEY_EV_LID_OPEN: /* Lid opened */
3584 case TP_HKEY_EV_BRGHT_CHANGED: /* brightness changed */
176dd985 3585 /* do not propagate these events */
3827e7a3
HMH		 3586 *ignore_acpi_ev = true;
3587 return true;
3588
3589 default:
3590 return false;
3591 }
3592}
3593
9ebd9e83
HMH		 3594static void thermal_dump_all_sensors(void);
3595
2d43f671 3596static bool hotkey_notify_6xxx(const u32 hkey,
106b4e66
HMH		 3597 bool *send_acpi_ev,
3598 bool *ignore_acpi_ev)
3599{
9ebd9e83
HMH		 3600 bool known = true;
3601
2d43f671 3602 /* 0x6000-0x6FFF: thermal alarms/notices and keyboard events */
106b4e66
HMH		 3603 *send_acpi_ev = true;
3604 *ignore_acpi_ev = false;
3605
3606 switch (hkey) {
9ebd9e83 3607 case TP_HKEY_EV_THM_TABLE_CHANGED:
0978e012 3608 pr_info("EC reports that Thermal Table has changed\n");
9ebd9e83
HMH		 3609 /* recommended action: do nothing, we don't have
3610 * Lenovo ATM information */
3611 return true;
67bcae6e 3612 case TP_HKEY_EV_ALARM_BAT_HOT:
0978e012 3613 pr_crit("THERMAL ALARM: battery is too hot!\n");
106b4e66 3614 /* recommended action: warn user through gui */
9ebd9e83 3615 break;
67bcae6e 3616 case TP_HKEY_EV_ALARM_BAT_XHOT:
0978e012 3617 pr_alert("THERMAL EMERGENCY: battery is extremely hot!\n");
106b4e66 3618 /* recommended action: immediate sleep/hibernate */
9ebd9e83 3619 break;
67bcae6e 3620 case TP_HKEY_EV_ALARM_SENSOR_HOT:
0978e012 3621 pr_crit("THERMAL ALARM: "
106b4e66
HMH		 3622 "a sensor reports something is too hot!\n");
3623 /* recommended action: warn user through gui, that */
3624 /* some internal component is too hot */
9ebd9e83 3625 break;
67bcae6e 3626 case TP_HKEY_EV_ALARM_SENSOR_XHOT:
0978e012
JP		 3627 pr_alert("THERMAL EMERGENCY: "
3628 "a sensor reports something is extremely hot!\n");
106b4e66 3629 /* recommended action: immediate sleep/hibernate */
9ebd9e83 3630 break;
2d43f671
HMH		 3631
3632 case TP_HKEY_EV_KEY_NUMLOCK:
3633 case TP_HKEY_EV_KEY_FN:
3634 /* key press events, we just ignore them as long as the EC
3635 * is still reporting them in the normal keyboard stream */
3636 *send_acpi_ev = false;
3637 *ignore_acpi_ev = true;
3638 return true;
3639
106b4e66 3640 default:
2d43f671 3641 pr_warn("unknown possible thermal alarm or keyboard event received\n");
9ebd9e83 3642 known = false;
106b4e66 3643 }
9ebd9e83
HMH		 3644
3645 thermal_dump_all_sensors();
3646
3647 return known;
106b4e66
HMH		 3648}
3649
56b6aeb0
HMH		 3650static void hotkey_notify(struct ibm_struct *ibm, u32 event)
3651{
6a38abbf 3652 u32 hkey;
3827e7a3
HMH		 3653 bool send_acpi_ev;
3654 bool ignore_acpi_ev;
3655 bool known_ev;
3eea123d
HMH		 3656
3657 if (event != 0x80) {
0978e012 3658 pr_err("unknown HKEY notification event %d\n", event);
3eea123d 3659 /* forward it to userspace, maybe it knows how to handle it */
35ff8b9f
HMH		 3660 acpi_bus_generate_netlink_event(
3661 ibm->acpi->device->pnp.device_class,
e0b36fc5 3662 dev_name(&ibm->acpi->device->dev),
35ff8b9f 3663 event, 0);
3eea123d
HMH		 3664 return;
3665 }
3666
3667 while (1) {
3668 if (!acpi_evalf(hkey_handle, &hkey, "MHKP", "d")) {
0978e012 3669 pr_err("failed to retrieve HKEY event\n");
3eea123d
HMH		 3670 return;
3671 }
3672
3673 if (hkey == 0) {
3674 /* queue empty */
3675 return;
3676 }
3677
3827e7a3
HMH		 3678 send_acpi_ev = true;
3679 ignore_acpi_ev = false;
56b6aeb0 3680
ff80f137
HMH		 3681 switch (hkey >> 12) {
3682 case 1:
3683 /* 0x1000-0x1FFF: key presses */
3827e7a3
HMH		 3684 known_ev = hotkey_notify_hotkey(hkey, &send_acpi_ev,
3685 &ignore_acpi_ev);
ff80f137 3686 break;
a713b4d7 3687 case 2:
3827e7a3
HMH		 3688 /* 0x2000-0x2FFF: Wakeup reason */
3689 known_ev = hotkey_notify_wakeup(hkey, &send_acpi_ev,
3690 &ignore_acpi_ev);
a713b4d7
HMH		 3691 break;
3692 case 3:
3827e7a3 3693 /* 0x3000-0x3FFF: bay-related wakeups */
bf8b29c8
HMH		 3694 switch (hkey) {
3695 case TP_HKEY_EV_BAYEJ_ACK:
a713b4d7 3696 hotkey_autosleep_ack = 1;
0978e012 3697 pr_info("bay ejected\n");
50ebec09 3698 hotkey_wakeup_hotunplug_complete_notify_change();
3827e7a3 3699 known_ev = true;
bf8b29c8
HMH		 3700 break;
3701 case TP_HKEY_EV_OPTDRV_EJ:
3702 /* FIXME: kick libata if SATA link offline */
3703 known_ev = true;
3704 break;
3705 default:
3827e7a3 3706 known_ev = false;
a713b4d7
HMH		 3707 }
3708 break;
3709 case 4:
a50245af
HMH		 3710 /* 0x4000-0x4FFF: dock-related events */
3711 known_ev = hotkey_notify_dockevent(hkey, &send_acpi_ev,
3712 &ignore_acpi_ev);
a713b4d7 3713 break;
ff80f137 3714 case 5:
d1edb2b5 3715 /* 0x5000-0x5FFF: human interface helpers */
3827e7a3
HMH		 3716 known_ev = hotkey_notify_usrevent(hkey, &send_acpi_ev,
3717 &ignore_acpi_ev);
ff80f137 3718 break;
106b4e66 3719 case 6:
2d43f671
HMH		 3720 /* 0x6000-0x6FFF: thermal alarms/notices and
3721 * keyboard events */
3722 known_ev = hotkey_notify_6xxx(hkey, &send_acpi_ev,
106b4e66
HMH		 3723 &ignore_acpi_ev);
3724 break;
ff80f137
HMH		 3725 case 7:
3726 /* 0x7000-0x7FFF: misc */
67bcae6e
HMH		 3727 if (tp_features.hotkey_wlsw &&
3728 hkey == TP_HKEY_EV_RFKILL_CHANGED) {
733e27c1 3729 tpacpi_send_radiosw_update();
3b64b51d 3730 send_acpi_ev = 0;
3827e7a3 3731 known_ev = true;
6a38abbf 3732 break;
6a38abbf 3733 }
ff80f137
HMH		 3734 /* fallthrough to default */
3735 default:
3827e7a3 3736 known_ev = false;
3b64b51d 3737 }
3827e7a3 3738 if (!known_ev) {
0978e012
JP		 3739 pr_notice("unhandled HKEY event 0x%04x\n", hkey);
3740 pr_notice("please report the conditions when this "
3741 "event happened to %s\n", TPACPI_MAIL);
6a38abbf 3742 }
ff80f137 3743
3eea123d 3744 /* Legacy events */
35ff8b9f
HMH		 3745 if (!ignore_acpi_ev &&
3746 (send_acpi_ev || hotkey_report_mode < 2)) {
3747 acpi_bus_generate_proc_event(ibm->acpi->device,
3748 event, hkey);
3e5ce914 3749 }
ff80f137 3750
3eea123d 3751 /* netlink events */
3e5ce914 3752 if (!ignore_acpi_ev && send_acpi_ev) {
35ff8b9f
HMH		 3753 acpi_bus_generate_netlink_event(
3754 ibm->acpi->device->pnp.device_class,
e0b36fc5 3755 dev_name(&ibm->acpi->device->dev),
35ff8b9f 3756 event, hkey);
3eea123d 3757 }
56b6aeb0
HMH		 3758 }
3759}
3760
a713b4d7
HMH		 3761static void hotkey_suspend(pm_message_t state)
3762{
3763 /* Do these on suspend, we get the events on early resume! */
3764 hotkey_wakeup_reason = TP_ACPI_WAKEUP_NONE;
3765 hotkey_autosleep_ack = 0;
3766}
3767
5c29d58f
HMH		 3768static void hotkey_resume(void)
3769{
d64c81c4
HMH		 3770 tpacpi_disable_brightness_delay();
3771
0d922e3b
HMH		 3772 if (hotkey_status_set(true) < 0 ||
3773 hotkey_mask_set(hotkey_acpi_mask) < 0)
0978e012 3774 pr_err("error while attempting to reset the event "
0d922e3b
HMH		 3775 "firmware interface\n");
3776
733e27c1 3777 tpacpi_send_radiosw_update();
6c231bd5 3778 hotkey_tablet_mode_notify_change();
50ebec09
HMH		 3779 hotkey_wakeup_reason_notify_change();
3780 hotkey_wakeup_hotunplug_complete_notify_change();
db25f16d 3781 hotkey_poll_setup_safe(false);
5c29d58f
HMH		 3782}
3783
a0416420 3784/* procfs -------------------------------------------------------------- */
887965e6 3785static int hotkey_read(struct seq_file *m)
1da177e4 3786{
ae92bd17 3787 int res, status;
1da177e4 3788
d8fd94d9 3789 if (!tp_features.hotkey) {
887965e6
AD		 3790 seq_printf(m, "status:\t\tnot supported\n");
3791 return 0;
78f81cc4
BD		 3792 }
3793
7646ea88 3794 if (mutex_lock_killable(&hotkey_mutex))
fc589a3c 3795 return -ERESTARTSYS;
b2c985e7
HMH		 3796 res = hotkey_status_get(&status);
3797 if (!res)
3798 res = hotkey_mask_get();
40ca9fdf 3799 mutex_unlock(&hotkey_mutex);
b86c4722
HMH		 3800 if (res)
3801 return res;
1da177e4 3802
887965e6 3803 seq_printf(m, "status:\t\t%s\n", enabled(status, 0));
0d922e3b 3804 if (hotkey_all_mask) {
887965e6
AD		 3805 seq_printf(m, "mask:\t\t0x%08x\n", hotkey_user_mask);
3806 seq_printf(m, "commands:\tenable, disable, reset, <mask>\n");
1da177e4 3807 } else {
887965e6
AD		 3808 seq_printf(m, "mask:\t\tnot supported\n");
3809 seq_printf(m, "commands:\tenable, disable, reset\n");
1da177e4
LT		 3810 }
3811
887965e6 3812 return 0;
1da177e4
LT		 3813}
3814
406e988b 3815static void hotkey_enabledisable_warn(bool enable)
2586d566
HMH		 3816{
3817 tpacpi_log_usertask("procfs hotkey enable/disable");
406e988b 3818 if (!WARN((tpacpi_lifecycle == TPACPI_LIFE_RUNNING || !enable),
0978e012
JP		 3819 pr_fmt("hotkey enable/disable functionality has been "
3820 "removed from the driver. "
3821 "Hotkeys are always enabled.\n")))
3822 pr_err("Please remove the hotkey=enable module "
3823 "parameter, it is deprecated. "
3824 "Hotkeys are always enabled.\n");
2586d566
HMH		 3825}
3826
78f81cc4 3827static int hotkey_write(char *buf)
1da177e4 3828{
2586d566 3829 int res;
ae92bd17 3830 u32 mask;
1da177e4 3831 char *cmd;
1da177e4 3832
d8fd94d9 3833 if (!tp_features.hotkey)
1da177e4
LT		 3834 return -ENODEV;
3835
7646ea88 3836 if (mutex_lock_killable(&hotkey_mutex))
fc589a3c 3837 return -ERESTARTSYS;
40ca9fdf 3838
0d922e3b 3839 mask = hotkey_user_mask;
78f81cc4 3840
40ca9fdf 3841 res = 0;
1da177e4
LT		 3842 while ((cmd = next_cmd(&buf))) {
3843 if (strlencmp(cmd, "enable") == 0) {
406e988b 3844 hotkey_enabledisable_warn(1);
1da177e4 3845 } else if (strlencmp(cmd, "disable") == 0) {
406e988b 3846 hotkey_enabledisable_warn(0);
2586d566 3847 res = -EPERM;
1da177e4 3848 } else if (strlencmp(cmd, "reset") == 0) {
20c9aa46
HMH		 3849 mask = (hotkey_all_mask | hotkey_source_mask)
3850 & ~hotkey_reserved_mask;
1da177e4
LT		 3851 } else if (sscanf(cmd, "0x%x", &mask) == 1) {
3852 /* mask set */
3853 } else if (sscanf(cmd, "%x", &mask) == 1) {
3854 /* mask set */
40ca9fdf
HMH		 3855 } else {
3856 res = -EINVAL;
3857 goto errexit;
3858 }
1da177e4 3859 }
56e2c200 3860
0d922e3b 3861 if (!res) {
56e2c200
HMH		 3862 tpacpi_disclose_usertask("procfs hotkey",
3863 "set mask to 0x%08x\n", mask);
0d922e3b
HMH		 3864 res = hotkey_user_mask_set(mask);
3865 }
1da177e4 3866
40ca9fdf
HMH		 3867errexit:
3868 mutex_unlock(&hotkey_mutex);
3869 return res;
78f81cc4 3870}
1da177e4 3871
1ba90e3a 3872static const struct acpi_device_id ibm_htk_device_ids[] = {
9fbdaeb4
MI		 3873 {TPACPI_ACPI_IBM_HKEY_HID, 0},
3874 {TPACPI_ACPI_LENOVO_HKEY_HID, 0},
1ba90e3a
TR		 3875 {"", 0},
3876};
3877
8d376cd6 3878static struct tp_acpi_drv_struct ibm_hotkey_acpidriver = {
1ba90e3a 3879 .hid = ibm_htk_device_ids,
8d376cd6
HMH		 3880 .notify = hotkey_notify,
3881 .handle = &hkey_handle,
3882 .type = ACPI_DEVICE_NOTIFY,
3883};
3884
a5763f22
HMH		 3885static struct ibm_struct hotkey_driver_data = {
3886 .name = "hotkey",
a5763f22
HMH		 3887 .read = hotkey_read,
3888 .write = hotkey_write,
3889 .exit = hotkey_exit,
5c29d58f 3890 .resume = hotkey_resume,
a713b4d7 3891 .suspend = hotkey_suspend,
8d376cd6 3892 .acpi = &ibm_hotkey_acpidriver,
a5763f22
HMH		 3893};
3894
56b6aeb0
HMH		 3895/*************************************************************************
3896 * Bluetooth subdriver
3897 */
1da177e4 3898
f74a27d4
HMH		 3899enum {
3900 /* ACPI GBDC/SBDC bits */
3901 TP_ACPI_BLUETOOTH_HWPRESENT = 0x01, /* Bluetooth hw available */
3902 TP_ACPI_BLUETOOTH_RADIOSSW = 0x02, /* Bluetooth radio enabled */
153f8220 3903 TP_ACPI_BLUETOOTH_RESUMECTRL = 0x04, /* Bluetooth state at resume:
08fedfc9 3904 0 = disable, 1 = enable */
153f8220
HMH		 3905};
3906
3907enum {
3908 /* ACPI \BLTH commands */
3909 TP_ACPI_BLTH_GET_ULTRAPORT_ID = 0x00, /* Get Ultraport BT ID */
3910 TP_ACPI_BLTH_GET_PWR_ON_RESUME = 0x01, /* Get power-on-resume state */
3911 TP_ACPI_BLTH_PWR_ON_ON_RESUME = 0x02, /* Resume powered on */
3912 TP_ACPI_BLTH_PWR_OFF_ON_RESUME = 0x03, /* Resume powered off */
3913 TP_ACPI_BLTH_SAVE_STATE = 0x05, /* Save state for S4/S5 */
f74a27d4
HMH		 3914};
3915
bee4cd9b
HMH		 3916#define TPACPI_RFK_BLUETOOTH_SW_NAME "tpacpi_bluetooth_sw"
3917
19d337df 3918static int bluetooth_get_status(void)
07431ec8
HMH		 3919{
3920 int status;
3921
a73f3091
HMH		 3922#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
3923 if (dbg_bluetoothemul)
3924 return (tpacpi_bluetooth_emulstate) ?
19d337df 3925 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF;
a73f3091
HMH		 3926#endif
3927
07431ec8
HMH		 3928 if (!acpi_evalf(hkey_handle, &status, "GBDC", "d"))
3929 return -EIO;
3930
0e74dc26 3931 return ((status & TP_ACPI_BLUETOOTH_RADIOSSW) != 0) ?
19d337df 3932 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF;
07431ec8
HMH		 3933}
3934
19d337df 3935static int bluetooth_set_status(enum tpacpi_rfkill_state state)
0e74dc26
HMH		 3936{
3937 int status;
3938
bee4cd9b 3939 vdbg_printk(TPACPI_DBG_RFKILL,
19d337df
JB		 3940 "will attempt to %s bluetooth\n",
3941 (state == TPACPI_RFK_RADIO_ON) ? "enable" : "disable");
bee4cd9b 3942
a73f3091
HMH		 3943#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
3944 if (dbg_bluetoothemul) {
19d337df 3945 tpacpi_bluetooth_emulstate = (state == TPACPI_RFK_RADIO_ON);
a73f3091
HMH		 3946 return 0;
3947 }
3948#endif
3949
19d337df 3950 if (state == TPACPI_RFK_RADIO_ON)
08fedfc9
HMH		 3951 status = TP_ACPI_BLUETOOTH_RADIOSSW
3952 | TP_ACPI_BLUETOOTH_RESUMECTRL;
3953 else
3954 status = 0;
19d337df 3955
07431ec8
HMH		 3956 if (!acpi_evalf(hkey_handle, NULL, "SBDC", "vd", status))
3957 return -EIO;
3958
3959 return 0;
3960}
f74a27d4 3961
d3a6ade4
HMH		 3962/* sysfs bluetooth enable ---------------------------------------------- */
3963static ssize_t bluetooth_enable_show(struct device *dev,
3964 struct device_attribute *attr,
3965 char *buf)
3966{
19d337df
JB		 3967 return tpacpi_rfk_sysfs_enable_show(TPACPI_RFK_BLUETOOTH_SW_ID,
3968 attr, buf);
d3a6ade4
HMH		 3969}
3970
3971static ssize_t bluetooth_enable_store(struct device *dev,
3972 struct device_attribute *attr,
3973 const char *buf, size_t count)
3974{
19d337df
JB		 3975 return tpacpi_rfk_sysfs_enable_store(TPACPI_RFK_BLUETOOTH_SW_ID,
3976 attr, buf, count);
d3a6ade4
HMH		 3977}
3978
3979static struct device_attribute dev_attr_bluetooth_enable =
cc4c24e1 3980 __ATTR(bluetooth_enable, S_IWUSR | S_IRUGO,
d3a6ade4
HMH		 3981 bluetooth_enable_show, bluetooth_enable_store);
3982
3983/* --------------------------------------------------------------------- */
3984
3985static struct attribute *bluetooth_attributes[] = {
3986 &dev_attr_bluetooth_enable.attr,
3987 NULL
3988};
3989
3990static const struct attribute_group bluetooth_attr_group = {
d3a6ade4
HMH		 3991 .attrs = bluetooth_attributes,
3992};
3993
19d337df
JB		 3994static const struct tpacpi_rfk_ops bluetooth_tprfk_ops = {
3995 .get_status = bluetooth_get_status,
3996 .set_status = bluetooth_set_status,
3997};
0e74dc26 3998
90d9d3c7
HMH		 3999static void bluetooth_shutdown(void)
4000{
4001 /* Order firmware to save current state to NVRAM */
4002 if (!acpi_evalf(NULL, NULL, "\\BLTH", "vd",
4003 TP_ACPI_BLTH_SAVE_STATE))
0978e012 4004 pr_notice("failed to save bluetooth state to NVRAM\n");
bee4cd9b
HMH		 4005 else
4006 vdbg_printk(TPACPI_DBG_RFKILL,
1f01358c 4007 "bluetooth state saved to NVRAM\n");
90d9d3c7
HMH		 4008}
4009
07431ec8
HMH		 4010static void bluetooth_exit(void)
4011{
4012 sysfs_remove_group(&tpacpi_pdev->dev.kobj,
4013 &bluetooth_attr_group);
19d337df
JB		 4014
4015 tpacpi_destroy_rfkill(TPACPI_RFK_BLUETOOTH_SW_ID);
4016
4017 bluetooth_shutdown();
07431ec8
HMH		 4018}
4019
a5763f22 4020static int __init bluetooth_init(struct ibm_init_struct *iibm)
1da177e4 4021{
d3a6ade4 4022 int res;
d6fdd1e9
HMH		 4023 int status = 0;
4024
bee4cd9b
HMH		 4025 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL,
4026 "initializing bluetooth subdriver\n");
fe08bc4b 4027
e0c7dfe7 4028 TPACPI_ACPIHANDLE_INIT(hkey);
5fba344c 4029
78f81cc4
BD		 4030 /* bluetooth not supported on 570, 600e/x, 770e, 770x, A21e, A2xm/p,
4031 G4x, R30, R31, R40e, R50e, T20-22, X20-21 */
d8fd94d9 4032 tp_features.bluetooth = hkey_handle &&
d6fdd1e9
HMH		 4033 acpi_evalf(hkey_handle, &status, "GBDC", "qd");
4034
bee4cd9b
HMH		 4035 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL,
4036 "bluetooth is %s, status 0x%02x\n",
d6fdd1e9
HMH		 4037 str_supported(tp_features.bluetooth),
4038 status);
4039
a73f3091
HMH		 4040#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
4041 if (dbg_bluetoothemul) {
4042 tp_features.bluetooth = 1;
0978e012 4043 pr_info("bluetooth switch emulation enabled\n");
a73f3091
HMH		 4044 } else
4045#endif
3a872080
HMH		 4046 if (tp_features.bluetooth &&
4047 !(status & TP_ACPI_BLUETOOTH_HWPRESENT)) {
4048 /* no bluetooth hardware present in system */
4049 tp_features.bluetooth = 0;
bee4cd9b 4050 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL,
3a872080
HMH		 4051 "bluetooth hardware not installed\n");
4052 }
4053
0e74dc26
HMH		 4054 if (!tp_features.bluetooth)
4055 return 1;
4056
0e74dc26 4057 res = tpacpi_new_rfkill(TPACPI_RFK_BLUETOOTH_SW_ID,
19d337df 4058 &bluetooth_tprfk_ops,
0e74dc26 4059 RFKILL_TYPE_BLUETOOTH,
bee4cd9b 4060 TPACPI_RFK_BLUETOOTH_SW_NAME,
19d337df
JB		 4061 true);
4062 if (res)
4063 return res;
4064
4065 res = sysfs_create_group(&tpacpi_pdev->dev.kobj,
4066 &bluetooth_attr_group);
0e74dc26 4067 if (res) {
19d337df 4068 tpacpi_destroy_rfkill(TPACPI_RFK_BLUETOOTH_SW_ID);
0e74dc26 4069 return res;
d6fdd1e9 4070 }
fe08bc4b 4071
0e74dc26 4072 return 0;
1da177e4
LT		 4073}
4074
d3a6ade4 4075/* procfs -------------------------------------------------------------- */
887965e6 4076static int bluetooth_read(struct seq_file *m)
1da177e4 4077{
887965e6 4078 return tpacpi_rfk_procfs_read(TPACPI_RFK_BLUETOOTH_SW_ID, m);
1da177e4
LT		 4079}
4080
78f81cc4 4081static int bluetooth_write(char *buf)
1da177e4 4082{
19d337df 4083 return tpacpi_rfk_procfs_write(TPACPI_RFK_BLUETOOTH_SW_ID, buf);
1da177e4
LT		 4084}
4085
a5763f22
HMH		 4086static struct ibm_struct bluetooth_driver_data = {
4087 .name = "bluetooth",
4088 .read = bluetooth_read,
4089 .write = bluetooth_write,
d3a6ade4 4090 .exit = bluetooth_exit,
90d9d3c7 4091 .shutdown = bluetooth_shutdown,
a5763f22
HMH		 4092};
4093
56b6aeb0
HMH		 4094/*************************************************************************
4095 * Wan subdriver
4096 */
4097
f74a27d4
HMH		 4098enum {
4099 /* ACPI GWAN/SWAN bits */
4100 TP_ACPI_WANCARD_HWPRESENT = 0x01, /* Wan hw available */
4101 TP_ACPI_WANCARD_RADIOSSW = 0x02, /* Wan radio enabled */
153f8220 4102 TP_ACPI_WANCARD_RESUMECTRL = 0x04, /* Wan state at resume:
08fedfc9 4103 0 = disable, 1 = enable */
f74a27d4
HMH		 4104};
4105
bee4cd9b
HMH		 4106#define TPACPI_RFK_WWAN_SW_NAME "tpacpi_wwan_sw"
4107
19d337df 4108static int wan_get_status(void)
07431ec8
HMH		 4109{
4110 int status;
4111
a73f3091
HMH		 4112#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
4113 if (dbg_wwanemul)
4114 return (tpacpi_wwan_emulstate) ?
19d337df 4115 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF;
a73f3091
HMH		 4116#endif
4117
07431ec8
HMH		 4118 if (!acpi_evalf(hkey_handle, &status, "GWAN", "d"))
4119 return -EIO;
4120
0e74dc26 4121 return ((status & TP_ACPI_WANCARD_RADIOSSW) != 0) ?
19d337df 4122 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF;
0e74dc26
HMH		 4123}
4124
19d337df 4125static int wan_set_status(enum tpacpi_rfkill_state state)
07431ec8
HMH		 4126{
4127 int status;
4128
bee4cd9b 4129 vdbg_printk(TPACPI_DBG_RFKILL,
19d337df
JB		 4130 "will attempt to %s wwan\n",
4131 (state == TPACPI_RFK_RADIO_ON) ? "enable" : "disable");
bee4cd9b 4132
a73f3091
HMH		 4133#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
4134 if (dbg_wwanemul) {
19d337df 4135 tpacpi_wwan_emulstate = (state == TPACPI_RFK_RADIO_ON);
a73f3091
HMH		 4136 return 0;
4137 }
4138#endif
4139
19d337df 4140 if (state == TPACPI_RFK_RADIO_ON)
08fedfc9
HMH		 4141 status = TP_ACPI_WANCARD_RADIOSSW
4142 | TP_ACPI_WANCARD_RESUMECTRL;
4143 else
4144 status = 0;
19d337df 4145
07431ec8
HMH		 4146 if (!acpi_evalf(hkey_handle, NULL, "SWAN", "vd", status))
4147 return -EIO;
4148
4149 return 0;
4150}
f74a27d4 4151
d3a6ade4
HMH		 4152/* sysfs wan enable ---------------------------------------------------- */
4153static ssize_t wan_enable_show(struct device *dev,
4154 struct device_attribute *attr,
4155 char *buf)
4156{
19d337df
JB		 4157 return tpacpi_rfk_sysfs_enable_show(TPACPI_RFK_WWAN_SW_ID,
4158 attr, buf);
d3a6ade4
HMH		 4159}
4160
4161static ssize_t wan_enable_store(struct device *dev,
4162 struct device_attribute *attr,
4163 const char *buf, size_t count)
4164{
19d337df
JB		 4165 return tpacpi_rfk_sysfs_enable_store(TPACPI_RFK_WWAN_SW_ID,
4166 attr, buf, count);
d3a6ade4
HMH		 4167}
4168
4169static struct device_attribute dev_attr_wan_enable =
cc4c24e1 4170 __ATTR(wwan_enable, S_IWUSR | S_IRUGO,
d3a6ade4
HMH		 4171 wan_enable_show, wan_enable_store);
4172
4173/* --------------------------------------------------------------------- */
4174
4175static struct attribute *wan_attributes[] = {
4176 &dev_attr_wan_enable.attr,
4177 NULL
4178};
4179
4180static const struct attribute_group wan_attr_group = {
d3a6ade4
HMH		 4181 .attrs = wan_attributes,
4182};
4183
19d337df
JB		 4184static const struct tpacpi_rfk_ops wan_tprfk_ops = {
4185 .get_status = wan_get_status,
4186 .set_status = wan_set_status,
4187};
0e74dc26 4188
90d9d3c7
HMH		 4189static void wan_shutdown(void)
4190{
4191 /* Order firmware to save current state to NVRAM */
4192 if (!acpi_evalf(NULL, NULL, "\\WGSV", "vd",
4193 TP_ACPI_WGSV_SAVE_STATE))
0978e012 4194 pr_notice("failed to save WWAN state to NVRAM\n");
bee4cd9b
HMH		 4195 else
4196 vdbg_printk(TPACPI_DBG_RFKILL,
4197 "WWAN state saved to NVRAM\n");
90d9d3c7
HMH		 4198}
4199
07431ec8
HMH		 4200static void wan_exit(void)
4201{
4202 sysfs_remove_group(&tpacpi_pdev->dev.kobj,
4203 &wan_attr_group);
19d337df
JB		 4204
4205 tpacpi_destroy_rfkill(TPACPI_RFK_WWAN_SW_ID);
4206
4207 wan_shutdown();
07431ec8
HMH		 4208}
4209
a5763f22 4210static int __init wan_init(struct ibm_init_struct *iibm)
42adb53c 4211{
d3a6ade4 4212 int res;
d6fdd1e9
HMH		 4213 int status = 0;
4214
bee4cd9b
HMH		 4215 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL,
4216 "initializing wan subdriver\n");
fe08bc4b 4217
e0c7dfe7 4218 TPACPI_ACPIHANDLE_INIT(hkey);
5fba344c 4219
d8fd94d9 4220 tp_features.wan = hkey_handle &&
d6fdd1e9
HMH		 4221 acpi_evalf(hkey_handle, &status, "GWAN", "qd");
4222
bee4cd9b
HMH		 4223 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL,
4224 "wan is %s, status 0x%02x\n",
d6fdd1e9
HMH		 4225 str_supported(tp_features.wan),
4226 status);
4227
a73f3091
HMH		 4228#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
4229 if (dbg_wwanemul) {
4230 tp_features.wan = 1;
0978e012 4231 pr_info("wwan switch emulation enabled\n");
a73f3091
HMH		 4232 } else
4233#endif
3a872080
HMH		 4234 if (tp_features.wan &&
4235 !(status & TP_ACPI_WANCARD_HWPRESENT)) {
4236 /* no wan hardware present in system */
4237 tp_features.wan = 0;
bee4cd9b 4238 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL,
3a872080
HMH		 4239 "wan hardware not installed\n");
4240 }
4241
0e74dc26
HMH		 4242 if (!tp_features.wan)
4243 return 1;
4244
0e74dc26 4245 res = tpacpi_new_rfkill(TPACPI_RFK_WWAN_SW_ID,
19d337df 4246 &wan_tprfk_ops,
0e74dc26 4247 RFKILL_TYPE_WWAN,
bee4cd9b 4248 TPACPI_RFK_WWAN_SW_NAME,
19d337df
JB		 4249 true);
4250 if (res)
4251 return res;
4252
4253 res = sysfs_create_group(&tpacpi_pdev->dev.kobj,
4254 &wan_attr_group);
4255
0e74dc26 4256 if (res) {
19d337df 4257 tpacpi_destroy_rfkill(TPACPI_RFK_WWAN_SW_ID);
0e74dc26 4258 return res;
d6fdd1e9 4259 }
fe08bc4b 4260
0e74dc26 4261 return 0;
42adb53c
JF		 4262}
4263
d3a6ade4 4264/* procfs -------------------------------------------------------------- */
887965e6 4265static int wan_read(struct seq_file *m)
42adb53c 4266{
887965e6 4267 return tpacpi_rfk_procfs_read(TPACPI_RFK_WWAN_SW_ID, m);
42adb53c
JF		 4268}
4269
4270static int wan_write(char *buf)
4271{
19d337df 4272 return tpacpi_rfk_procfs_write(TPACPI_RFK_WWAN_SW_ID, buf);
42adb53c
JF		 4273}
4274
a5763f22
HMH		 4275static struct ibm_struct wan_driver_data = {
4276 .name = "wan",
4277 .read = wan_read,
4278 .write = wan_write,
d3a6ade4 4279 .exit = wan_exit,
90d9d3c7 4280 .shutdown = wan_shutdown,
a5763f22
HMH		 4281};
4282
0045c0aa
HMH		 4283/*************************************************************************
4284 * UWB subdriver
4285 */
4286
4287enum {
4288 /* ACPI GUWB/SUWB bits */
4289 TP_ACPI_UWB_HWPRESENT = 0x01, /* UWB hw available */
4290 TP_ACPI_UWB_RADIOSSW = 0x02, /* UWB radio enabled */
4291};
4292
bee4cd9b
HMH		 4293#define TPACPI_RFK_UWB_SW_NAME "tpacpi_uwb_sw"
4294
19d337df 4295static int uwb_get_status(void)
0045c0aa
HMH		 4296{
4297 int status;
4298
0045c0aa
HMH		 4299#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
4300 if (dbg_uwbemul)
4301 return (tpacpi_uwb_emulstate) ?
19d337df 4302 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF;
0045c0aa
HMH		 4303#endif
4304
4305 if (!acpi_evalf(hkey_handle, &status, "GUWB", "d"))
4306 return -EIO;
4307
4308 return ((status & TP_ACPI_UWB_RADIOSSW) != 0) ?
19d337df 4309 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF;
0045c0aa
HMH		 4310}
4311
19d337df 4312static int uwb_set_status(enum tpacpi_rfkill_state state)
0045c0aa
HMH		 4313{
4314 int status;
4315
bee4cd9b 4316 vdbg_printk(TPACPI_DBG_RFKILL,
19d337df
JB		 4317 "will attempt to %s UWB\n",
4318 (state == TPACPI_RFK_RADIO_ON) ? "enable" : "disable");
bee4cd9b 4319
0045c0aa
HMH		 4320#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
4321 if (dbg_uwbemul) {
19d337df 4322 tpacpi_uwb_emulstate = (state == TPACPI_RFK_RADIO_ON);
0045c0aa
HMH		 4323 return 0;
4324 }
4325#endif
4326
19d337df
JB		 4327 if (state == TPACPI_RFK_RADIO_ON)
4328 status = TP_ACPI_UWB_RADIOSSW;
4329 else
4330 status = 0;
4331
0045c0aa
HMH		 4332 if (!acpi_evalf(hkey_handle, NULL, "SUWB", "vd", status))
4333 return -EIO;
4334
0045c0aa
HMH		 4335 return 0;
4336}
4337
4338/* --------------------------------------------------------------------- */
4339
19d337df
JB		 4340static const struct tpacpi_rfk_ops uwb_tprfk_ops = {
4341 .get_status = uwb_get_status,
4342 .set_status = uwb_set_status,
4343};
0045c0aa
HMH		 4344
4345static void uwb_exit(void)
4346{
19d337df 4347 tpacpi_destroy_rfkill(TPACPI_RFK_UWB_SW_ID);
0045c0aa
HMH		 4348}
4349
4350static int __init uwb_init(struct ibm_init_struct *iibm)
4351{
4352 int res;
4353 int status = 0;
4354
bee4cd9b
HMH		 4355 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL,
4356 "initializing uwb subdriver\n");
0045c0aa
HMH		 4357
4358 TPACPI_ACPIHANDLE_INIT(hkey);
4359
4360 tp_features.uwb = hkey_handle &&
4361 acpi_evalf(hkey_handle, &status, "GUWB", "qd");
4362
bee4cd9b
HMH		 4363 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL,
4364 "uwb is %s, status 0x%02x\n",
0045c0aa
HMH		 4365 str_supported(tp_features.uwb),
4366 status);
4367
4368#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
4369 if (dbg_uwbemul) {
4370 tp_features.uwb = 1;
0978e012 4371 pr_info("uwb switch emulation enabled\n");
0045c0aa
HMH		 4372 } else
4373#endif
4374 if (tp_features.uwb &&
4375 !(status & TP_ACPI_UWB_HWPRESENT)) {
4376 /* no uwb hardware present in system */
4377 tp_features.uwb = 0;
4378 dbg_printk(TPACPI_DBG_INIT,
4379 "uwb hardware not installed\n");
4380 }
4381
4382 if (!tp_features.uwb)
4383 return 1;
4384
4385 res = tpacpi_new_rfkill(TPACPI_RFK_UWB_SW_ID,
19d337df 4386 &uwb_tprfk_ops,
0045c0aa 4387 RFKILL_TYPE_UWB,
bee4cd9b 4388 TPACPI_RFK_UWB_SW_NAME,
19d337df 4389 false);
0045c0aa
HMH		 4390 return res;
4391}
4392
4393static struct ibm_struct uwb_driver_data = {
4394 .name = "uwb",
4395 .exit = uwb_exit,
4396 .flags.experimental = 1,
4397};
4398
56b6aeb0
HMH		 4399/*************************************************************************
4400 * Video subdriver
4401 */
4402
d7c1d17d
HMH		 4403#ifdef CONFIG_THINKPAD_ACPI_VIDEO
4404
f74a27d4
HMH		 4405enum video_access_mode {
4406 TPACPI_VIDEO_NONE = 0,
4407 TPACPI_VIDEO_570, /* 570 */
4408 TPACPI_VIDEO_770, /* 600e/x, 770e, 770x */
4409 TPACPI_VIDEO_NEW, /* all others */
4410};
4411
4412enum { /* video status flags, based on VIDEO_570 */
4413 TP_ACPI_VIDEO_S_LCD = 0x01, /* LCD output enabled */
4414 TP_ACPI_VIDEO_S_CRT = 0x02, /* CRT output enabled */
4415 TP_ACPI_VIDEO_S_DVI = 0x08, /* DVI output enabled */
4416};
4417
4418enum { /* TPACPI_VIDEO_570 constants */
4419 TP_ACPI_VIDEO_570_PHSCMD = 0x87, /* unknown magic constant :( */
4420 TP_ACPI_VIDEO_570_PHSMASK = 0x03, /* PHS bits that map to
4421 * video_status_flags */
4422 TP_ACPI_VIDEO_570_PHS2CMD = 0x8b, /* unknown magic constant :( */
4423 TP_ACPI_VIDEO_570_PHS2SET = 0x80, /* unknown magic constant :( */
4424};
4425
9a8e1738
HMH		 4426static enum video_access_mode video_supported;
4427static int video_orig_autosw;
78f81cc4 4428
f74a27d4
HMH		 4429static int video_autosw_get(void);
4430static int video_autosw_set(int enable);
4431
112a6ee0
JP		 4432TPACPI_HANDLE(vid, root,
4433 "\\_SB.PCI.AGP.VGA", /* 570 */
4434 "\\_SB.PCI0.AGP0.VID0", /* 600e/x, 770x */
4435 "\\_SB.PCI0.VID0", /* 770e */
4436 "\\_SB.PCI0.VID", /* A21e, G4x, R50e, X30, X40 */
4437 "\\_SB.PCI0.AGP.VGA", /* X100e and a few others */
4438 "\\_SB.PCI0.AGP.VID", /* all others */
4439 ); /* R30, R31 */
4440
e0c7dfe7 4441TPACPI_HANDLE(vid2, root, "\\_SB.PCI0.AGPB.VID"); /* G41 */
56b6aeb0 4442
a5763f22 4443static int __init video_init(struct ibm_init_struct *iibm)
1da177e4 4444{
78f81cc4
BD		 4445 int ivga;
4446
fe08bc4b
HMH		 4447 vdbg_printk(TPACPI_DBG_INIT, "initializing video subdriver\n");
4448
e0c7dfe7 4449 TPACPI_ACPIHANDLE_INIT(vid);
e28393c0
HMH		 4450 if (tpacpi_is_ibm())
4451 TPACPI_ACPIHANDLE_INIT(vid2);
5fba344c 4452
78f81cc4
BD		 4453 if (vid2_handle && acpi_evalf(NULL, &ivga, "\\IVGA", "d") && ivga)
4454 /* G41, assume IVGA doesn't change */
4455 vid_handle = vid2_handle;
4456
4457 if (!vid_handle)
4458 /* video switching not supported on R30, R31 */
efa27145 4459 video_supported = TPACPI_VIDEO_NONE;
e28393c0
HMH		 4460 else if (tpacpi_is_ibm() &&
4461 acpi_evalf(vid_handle, &video_orig_autosw, "SWIT", "qd"))
78f81cc4 4462 /* 570 */
efa27145 4463 video_supported = TPACPI_VIDEO_570;
e28393c0
HMH		 4464 else if (tpacpi_is_ibm() &&
4465 acpi_evalf(vid_handle, &video_orig_autosw, "^VADL", "qd"))
78f81cc4 4466 /* 600e/x, 770e, 770x */
efa27145 4467 video_supported = TPACPI_VIDEO_770;
78f81cc4
BD		 4468 else
4469 /* all others */
efa27145 4470 video_supported = TPACPI_VIDEO_NEW;
1da177e4 4471
fe08bc4b
HMH		 4472 vdbg_printk(TPACPI_DBG_INIT, "video is %s, mode %d\n",
4473 str_supported(video_supported != TPACPI_VIDEO_NONE),
4474 video_supported);
4475
5fba344c 4476 return (video_supported != TPACPI_VIDEO_NONE)? 0 : 1;
1da177e4
LT		 4477}
4478
56b6aeb0
HMH		 4479static void video_exit(void)
4480{
83f34724
HMH		 4481 dbg_printk(TPACPI_DBG_EXIT,
4482 "restoring original video autoswitch mode\n");
4483 if (video_autosw_set(video_orig_autosw))
0978e012 4484 pr_err("error while trying to restore original "
83f34724 4485 "video autoswitch mode\n");
56b6aeb0
HMH		 4486}
4487
83f34724 4488static int video_outputsw_get(void)
1da177e4
LT		 4489{
4490 int status = 0;
4491 int i;
4492
83f34724
HMH		 4493 switch (video_supported) {
4494 case TPACPI_VIDEO_570:
4495 if (!acpi_evalf(NULL, &i, "\\_SB.PHS", "dd",
4496 TP_ACPI_VIDEO_570_PHSCMD))
4497 return -EIO;
4498 status = i & TP_ACPI_VIDEO_570_PHSMASK;
4499 break;
4500 case TPACPI_VIDEO_770:
4501 if (!acpi_evalf(NULL, &i, "\\VCDL", "d"))
4502 return -EIO;
4503 if (i)
4504 status |= TP_ACPI_VIDEO_S_LCD;
4505 if (!acpi_evalf(NULL, &i, "\\VCDC", "d"))
4506 return -EIO;
4507 if (i)
4508 status |= TP_ACPI_VIDEO_S_CRT;
4509 break;
4510 case TPACPI_VIDEO_NEW:
4511 if (!acpi_evalf(NULL, NULL, "\\VUPS", "vd", 1) ||
4512 !acpi_evalf(NULL, &i, "\\VCDC", "d"))
4513 return -EIO;
4514 if (i)
4515 status |= TP_ACPI_VIDEO_S_CRT;
4516
4517 if (!acpi_evalf(NULL, NULL, "\\VUPS", "vd", 0) ||
4518 !acpi_evalf(NULL, &i, "\\VCDL", "d"))
4519 return -EIO;
4520 if (i)
4521 status |= TP_ACPI_VIDEO_S_LCD;
4522 if (!acpi_evalf(NULL, &i, "\\VCDD", "d"))
4523 return -EIO;
4524 if (i)
4525 status |= TP_ACPI_VIDEO_S_DVI;
4526 break;
4527 default:
4528 return -ENOSYS;
78f81cc4
BD		 4529 }
4530
4531 return status;
4532}
1da177e4 4533
83f34724 4534static int video_outputsw_set(int status)
78f81cc4 4535{
83f34724
HMH		 4536 int autosw;
4537 int res = 0;
4538
4539 switch (video_supported) {
4540 case TPACPI_VIDEO_570:
4541 res = acpi_evalf(NULL, NULL,
4542 "\\_SB.PHS2", "vdd",
4543 TP_ACPI_VIDEO_570_PHS2CMD,
4544 status | TP_ACPI_VIDEO_570_PHS2SET);
4545 break;
4546 case TPACPI_VIDEO_770:
4547 autosw = video_autosw_get();
4548 if (autosw < 0)
4549 return autosw;
1da177e4 4550
83f34724
HMH		 4551 res = video_autosw_set(1);
4552 if (res)
4553 return res;
4554 res = acpi_evalf(vid_handle, NULL,
4555 "ASWT", "vdd", status * 0x100, 0);
4556 if (!autosw && video_autosw_set(autosw)) {
0978e012 4557 pr_err("video auto-switch left enabled due to error\n");
83f34724
HMH		 4558 return -EIO;
4559 }
4560 break;
4561 case TPACPI_VIDEO_NEW:
4562 res = acpi_evalf(NULL, NULL, "\\VUPS", "vd", 0x80) &&
35ff8b9f 4563 acpi_evalf(NULL, NULL, "\\VSDS", "vdd", status, 1);
83f34724
HMH		 4564 break;
4565 default:
4566 return -ENOSYS;
4567 }
1da177e4 4568
83f34724 4569 return (res)? 0 : -EIO;
1da177e4
LT		 4570}
4571
83f34724 4572static int video_autosw_get(void)
78f81cc4 4573{
83f34724 4574 int autosw = 0;
78f81cc4 4575
83f34724
HMH		 4576 switch (video_supported) {
4577 case TPACPI_VIDEO_570:
4578 if (!acpi_evalf(vid_handle, &autosw, "SWIT", "d"))
4579 return -EIO;
4580 break;
4581 case TPACPI_VIDEO_770:
4582 case TPACPI_VIDEO_NEW:
4583 if (!acpi_evalf(vid_handle, &autosw, "^VDEE", "d"))
4584 return -EIO;
4585 break;
4586 default:
4587 return -ENOSYS;
4588 }
78f81cc4 4589
83f34724 4590 return autosw & 1;
78f81cc4
BD		 4591}
4592
83f34724 4593static int video_autosw_set(int enable)
78f81cc4 4594{
83f34724
HMH		 4595 if (!acpi_evalf(vid_handle, NULL, "_DOS", "vd", (enable)? 1 : 0))
4596 return -EIO;
4597 return 0;
78f81cc4
BD		 4598}
4599
83f34724 4600static int video_outputsw_cycle(void)
78f81cc4 4601{
83f34724
HMH		 4602 int autosw = video_autosw_get();
4603 int res;
78f81cc4 4604
83f34724
HMH		 4605 if (autosw < 0)
4606 return autosw;
78f81cc4 4607
83f34724
HMH		 4608 switch (video_supported) {
4609 case TPACPI_VIDEO_570:
4610 res = video_autosw_set(1);
4611 if (res)
4612 return res;
4613 res = acpi_evalf(ec_handle, NULL, "_Q16", "v");
4614 break;
4615 case TPACPI_VIDEO_770:
4616 case TPACPI_VIDEO_NEW:
4617 res = video_autosw_set(1);
4618 if (res)
4619 return res;
4620 res = acpi_evalf(vid_handle, NULL, "VSWT", "v");
4621 break;
4622 default:
4623 return -ENOSYS;
4624 }
4625 if (!autosw && video_autosw_set(autosw)) {
0978e012 4626 pr_err("video auto-switch left enabled due to error\n");
83f34724 4627 return -EIO;
78f81cc4
BD		 4628 }
4629
83f34724
HMH		 4630 return (res)? 0 : -EIO;
4631}
4632
4633static int video_expand_toggle(void)
4634{
4635 switch (video_supported) {
4636 case TPACPI_VIDEO_570:
4637 return acpi_evalf(ec_handle, NULL, "_Q17", "v")?
4638 0 : -EIO;
4639 case TPACPI_VIDEO_770:
4640 return acpi_evalf(vid_handle, NULL, "VEXP", "v")?
4641 0 : -EIO;
4642 case TPACPI_VIDEO_NEW:
4643 return acpi_evalf(NULL, NULL, "\\VEXP", "v")?
4644 0 : -EIO;
4645 default:
4646 return -ENOSYS;
4647 }
4648 /* not reached */
78f81cc4
BD		 4649}
4650
887965e6 4651static int video_read(struct seq_file *m)
56b6aeb0 4652{
83f34724 4653 int status, autosw;
56b6aeb0 4654
83f34724 4655 if (video_supported == TPACPI_VIDEO_NONE) {
887965e6
AD		 4656 seq_printf(m, "status:\t\tnot supported\n");
4657 return 0;
56b6aeb0
HMH		 4658 }
4659
b525c06c
HMH		 4660 /* Even reads can crash X.org, so... */
4661 if (!capable(CAP_SYS_ADMIN))
4662 return -EPERM;
4663
83f34724
HMH		 4664 status = video_outputsw_get();
4665 if (status < 0)
4666 return status;
4667
4668 autosw = video_autosw_get();
4669 if (autosw < 0)
4670 return autosw;
4671
887965e6
AD		 4672 seq_printf(m, "status:\t\tsupported\n");
4673 seq_printf(m, "lcd:\t\t%s\n", enabled(status, 0));
4674 seq_printf(m, "crt:\t\t%s\n", enabled(status, 1));
efa27145 4675 if (video_supported == TPACPI_VIDEO_NEW)
887965e6
AD		 4676 seq_printf(m, "dvi:\t\t%s\n", enabled(status, 3));
4677 seq_printf(m, "auto:\t\t%s\n", enabled(autosw, 0));
4678 seq_printf(m, "commands:\tlcd_enable, lcd_disable\n");
4679 seq_printf(m, "commands:\tcrt_enable, crt_disable\n");
efa27145 4680 if (video_supported == TPACPI_VIDEO_NEW)
887965e6
AD		 4681 seq_printf(m, "commands:\tdvi_enable, dvi_disable\n");
4682 seq_printf(m, "commands:\tauto_enable, auto_disable\n");
4683 seq_printf(m, "commands:\tvideo_switch, expand_toggle\n");
56b6aeb0 4684
887965e6 4685 return 0;
56b6aeb0
HMH		 4686}
4687
78f81cc4 4688static int video_write(char *buf)
1da177e4
LT		 4689{
4690 char *cmd;
4691 int enable, disable, status;
83f34724 4692 int res;
1da177e4 4693
83f34724 4694 if (video_supported == TPACPI_VIDEO_NONE)
78f81cc4
BD		 4695 return -ENODEV;
4696
b525c06c
HMH		 4697 /* Even reads can crash X.org, let alone writes... */
4698 if (!capable(CAP_SYS_ADMIN))
4699 return -EPERM;
4700
83f34724
HMH		 4701 enable = 0;
4702 disable = 0;
1da177e4
LT		 4703
4704 while ((cmd = next_cmd(&buf))) {
4705 if (strlencmp(cmd, "lcd_enable") == 0) {
83f34724 4706 enable |= TP_ACPI_VIDEO_S_LCD;
1da177e4 4707 } else if (strlencmp(cmd, "lcd_disable") == 0) {
83f34724 4708 disable |= TP_ACPI_VIDEO_S_LCD;
1da177e4 4709 } else if (strlencmp(cmd, "crt_enable") == 0) {
83f34724 4710 enable |= TP_ACPI_VIDEO_S_CRT;
1da177e4 4711 } else if (strlencmp(cmd, "crt_disable") == 0) {
83f34724 4712 disable |= TP_ACPI_VIDEO_S_CRT;
efa27145 4713 } else if (video_supported == TPACPI_VIDEO_NEW &&
78f81cc4 4714 strlencmp(cmd, "dvi_enable") == 0) {
83f34724 4715 enable |= TP_ACPI_VIDEO_S_DVI;
efa27145 4716 } else if (video_supported == TPACPI_VIDEO_NEW &&
78f81cc4 4717 strlencmp(cmd, "dvi_disable") == 0) {
83f34724 4718 disable |= TP_ACPI_VIDEO_S_DVI;
1da177e4 4719 } else if (strlencmp(cmd, "auto_enable") == 0) {
83f34724
HMH		 4720 res = video_autosw_set(1);
4721 if (res)
4722 return res;
1da177e4 4723 } else if (strlencmp(cmd, "auto_disable") == 0) {
83f34724
HMH		 4724 res = video_autosw_set(0);
4725 if (res)
4726 return res;
1da177e4 4727 } else if (strlencmp(cmd, "video_switch") == 0) {
83f34724
HMH		 4728 res = video_outputsw_cycle();
4729 if (res)
4730 return res;
1da177e4 4731 } else if (strlencmp(cmd, "expand_toggle") == 0) {
83f34724
HMH		 4732 res = video_expand_toggle();
4733 if (res)
4734 return res;
1da177e4
LT		 4735 } else
4736 return -EINVAL;
4737 }
4738
4739 if (enable || disable) {
83f34724
HMH		 4740 status = video_outputsw_get();
4741 if (status < 0)
4742 return status;
4743 res = video_outputsw_set((status & ~disable) | enable);
4744 if (res)
4745 return res;
1da177e4
LT		 4746 }
4747
4748 return 0;
4749}
4750
a5763f22
HMH		 4751static struct ibm_struct video_driver_data = {
4752 .name = "video",
4753 .read = video_read,
4754 .write = video_write,
4755 .exit = video_exit,
4756};
4757
d7c1d17d
HMH		 4758#endif /* CONFIG_THINKPAD_ACPI_VIDEO */
4759
56b6aeb0
HMH		 4760/*************************************************************************
4761 * Light (thinklight) subdriver
4762 */
1da177e4 4763
e0c7dfe7
HMH		 4764TPACPI_HANDLE(lght, root, "\\LGHT"); /* A21e, A2xm/p, T20-22, X20-21 */
4765TPACPI_HANDLE(ledb, ec, "LEDB"); /* G4x */
56b6aeb0 4766
4fa6811b
HMH		 4767static int light_get_status(void)
4768{
4769 int status = 0;
4770
4771 if (tp_features.light_status) {
4772 if (!acpi_evalf(ec_handle, &status, "KBLT", "d"))
4773 return -EIO;
4774 return (!!status);
4775 }
4776
4777 return -ENXIO;
4778}
4779
4780static int light_set_status(int status)
4781{
4782 int rc;
4783
4784 if (tp_features.light) {
4785 if (cmos_handle) {
4786 rc = acpi_evalf(cmos_handle, NULL, NULL, "vd",
4787 (status)?
4788 TP_CMOS_THINKLIGHT_ON :
4789 TP_CMOS_THINKLIGHT_OFF);
4790 } else {
4791 rc = acpi_evalf(lght_handle, NULL, NULL, "vd",
4792 (status)? 1 : 0);
4793 }
4794 return (rc)? 0 : -EIO;
4795 }
4796
4797 return -ENXIO;
4798}
4799
e306501d
HMH		 4800static void light_set_status_worker(struct work_struct *work)
4801{
4802 struct tpacpi_led_classdev *data =
4803 container_of(work, struct tpacpi_led_classdev, work);
4804
4805 if (likely(tpacpi_lifecycle == TPACPI_LIFE_RUNNING))
75bd3bf2 4806 light_set_status((data->new_state != TPACPI_LED_OFF));
e306501d
HMH		 4807}
4808
4809static void light_sysfs_set(struct led_classdev *led_cdev,
4810 enum led_brightness brightness)
4811{
4812 struct tpacpi_led_classdev *data =
4813 container_of(led_cdev,
4814 struct tpacpi_led_classdev,
4815 led_classdev);
75bd3bf2
HMH		 4816 data->new_state = (brightness != LED_OFF) ?
4817 TPACPI_LED_ON : TPACPI_LED_OFF;
e0e3c061 4818 queue_work(tpacpi_wq, &data->work);
e306501d
HMH		 4819}
4820
4821static enum led_brightness light_sysfs_get(struct led_classdev *led_cdev)
4822{
4823 return (light_get_status() == 1)? LED_FULL : LED_OFF;
4824}
4825
4826static struct tpacpi_led_classdev tpacpi_led_thinklight = {
4827 .led_classdev = {
4828 .name = "tpacpi::thinklight",
4829 .brightness_set = &light_sysfs_set,
4830 .brightness_get = &light_sysfs_get,
4831 }
4832};
4833
a5763f22 4834static int __init light_init(struct ibm_init_struct *iibm)
1da177e4 4835{
9c0a76e1 4836 int rc;
e306501d 4837
fe08bc4b
HMH		 4838 vdbg_printk(TPACPI_DBG_INIT, "initializing light subdriver\n");
4839
e28393c0
HMH		 4840 if (tpacpi_is_ibm()) {
4841 TPACPI_ACPIHANDLE_INIT(ledb);
4842 TPACPI_ACPIHANDLE_INIT(lght);
4843 }
e0c7dfe7 4844 TPACPI_ACPIHANDLE_INIT(cmos);
e306501d 4845 INIT_WORK(&tpacpi_led_thinklight.work, light_set_status_worker);
5fba344c 4846
78f81cc4 4847 /* light not supported on 570, 600e/x, 770e, 770x, G4x, R30, R31 */
d8fd94d9 4848 tp_features.light = (cmos_handle || lght_handle) && !ledb_handle;
78f81cc4 4849
d8fd94d9 4850 if (tp_features.light)
78f81cc4
BD		 4851 /* light status not supported on
4852 570, 600e/x, 770e, 770x, G4x, R30, R31, R32, X20 */
d8fd94d9
HMH		 4853 tp_features.light_status =
4854 acpi_evalf(ec_handle, NULL, "KBLT", "qv");
1da177e4 4855
9c0a76e1
HMH		 4856 vdbg_printk(TPACPI_DBG_INIT, "light is %s, light status is %s\n",
4857 str_supported(tp_features.light),
4858 str_supported(tp_features.light_status));
fe08bc4b 4859
9c0a76e1
HMH		 4860 if (!tp_features.light)
4861 return 1;
4862
4863 rc = led_classdev_register(&tpacpi_pdev->dev,
4864 &tpacpi_led_thinklight.led_classdev);
e306501d
HMH		 4865
4866 if (rc < 0) {
4867 tp_features.light = 0;
4868 tp_features.light_status = 0;
9c0a76e1
HMH		 4869 } else {
4870 rc = 0;
e306501d 4871 }
9c0a76e1 4872
e306501d
HMH		 4873 return rc;
4874}
4875
4876static void light_exit(void)
4877{
4878 led_classdev_unregister(&tpacpi_led_thinklight.led_classdev);
4879 if (work_pending(&tpacpi_led_thinklight.work))
e0e3c061 4880 flush_workqueue(tpacpi_wq);
1da177e4
LT		 4881}
4882
887965e6 4883static int light_read(struct seq_file *m)
1da177e4 4884{
4fa6811b 4885 int status;
1da177e4 4886
d8fd94d9 4887 if (!tp_features.light) {
887965e6 4888 seq_printf(m, "status:\t\tnot supported\n");
d8fd94d9 4889 } else if (!tp_features.light_status) {
887965e6
AD		 4890 seq_printf(m, "status:\t\tunknown\n");
4891 seq_printf(m, "commands:\ton, off\n");
78f81cc4 4892 } else {
4fa6811b
HMH		 4893 status = light_get_status();
4894 if (status < 0)
4895 return status;
887965e6
AD		 4896 seq_printf(m, "status:\t\t%s\n", onoff(status, 0));
4897 seq_printf(m, "commands:\ton, off\n");
78f81cc4 4898 }
1da177e4 4899
887965e6 4900 return 0;
1da177e4
LT		 4901}
4902
78f81cc4 4903static int light_write(char *buf)
1da177e4 4904{
1da177e4 4905 char *cmd;
4fa6811b 4906 int newstatus = 0;
78f81cc4 4907
d8fd94d9 4908 if (!tp_features.light)
78f81cc4
BD		 4909 return -ENODEV;
4910
1da177e4
LT		 4911 while ((cmd = next_cmd(&buf))) {
4912 if (strlencmp(cmd, "on") == 0) {
4fa6811b 4913 newstatus = 1;
1da177e4 4914 } else if (strlencmp(cmd, "off") == 0) {
4fa6811b 4915 newstatus = 0;
1da177e4
LT		 4916 } else
4917 return -EINVAL;
1da177e4
LT		 4918 }
4919
4fa6811b 4920 return light_set_status(newstatus);
1da177e4
LT		 4921}
4922
a5763f22
HMH		 4923static struct ibm_struct light_driver_data = {
4924 .name = "light",
4925 .read = light_read,
4926 .write = light_write,
e306501d 4927 .exit = light_exit,
a5763f22
HMH		 4928};
4929
56b6aeb0
HMH		 4930/*************************************************************************
4931 * CMOS subdriver
4932 */
4933
b616004c
HMH		 4934/* sysfs cmos_command -------------------------------------------------- */
4935static ssize_t cmos_command_store(struct device *dev,
4936 struct device_attribute *attr,
4937 const char *buf, size_t count)
4938{
4939 unsigned long cmos_cmd;
4940 int res;
4941
4942 if (parse_strtoul(buf, 21, &cmos_cmd))
4943 return -EINVAL;
4944
4945 res = issue_thinkpad_cmos_command(cmos_cmd);
4946 return (res)? res : count;
4947}
4948
4949static struct device_attribute dev_attr_cmos_command =
4950 __ATTR(cmos_command, S_IWUSR, NULL, cmos_command_store);
4951
4952/* --------------------------------------------------------------------- */
4953
a5763f22 4954static int __init cmos_init(struct ibm_init_struct *iibm)
5fba344c 4955{
b616004c
HMH		 4956 int res;
4957
fe08bc4b
HMH		 4958 vdbg_printk(TPACPI_DBG_INIT,
4959 "initializing cmos commands subdriver\n");
4960
e0c7dfe7 4961 TPACPI_ACPIHANDLE_INIT(cmos);
5fba344c 4962
fe08bc4b
HMH		 4963 vdbg_printk(TPACPI_DBG_INIT, "cmos commands are %s\n",
4964 str_supported(cmos_handle != NULL));
b616004c
HMH		 4965
4966 res = device_create_file(&tpacpi_pdev->dev, &dev_attr_cmos_command);
4967 if (res)
4968 return res;
4969
5fba344c
HMH		 4970 return (cmos_handle)? 0 : 1;
4971}
4972
b616004c
HMH		 4973static void cmos_exit(void)
4974{
4975 device_remove_file(&tpacpi_pdev->dev, &dev_attr_cmos_command);
4976}
4977
887965e6 4978static int cmos_read(struct seq_file *m)
1da177e4 4979{
78f81cc4
BD		 4980 /* cmos not supported on 570, 600e/x, 770e, 770x, A21e, A2xm/p,
4981 R30, R31, T20-22, X20-21 */
1da177e4 4982 if (!cmos_handle)
887965e6 4983 seq_printf(m, "status:\t\tnot supported\n");
1da177e4 4984 else {
887965e6
AD		 4985 seq_printf(m, "status:\t\tsupported\n");
4986 seq_printf(m, "commands:\t<cmd> (<cmd> is 0-21)\n");
1da177e4
LT		 4987 }
4988
887965e6 4989 return 0;
1da177e4
LT		 4990}
4991
78f81cc4 4992static int cmos_write(char *buf)
1da177e4
LT		 4993{
4994 char *cmd;
c9bea99c 4995 int cmos_cmd, res;
1da177e4
LT		 4996
4997 while ((cmd = next_cmd(&buf))) {
78f81cc4
BD		 4998 if (sscanf(cmd, "%u", &cmos_cmd) == 1 &&
4999 cmos_cmd >= 0 && cmos_cmd <= 21) {
1da177e4
LT		 5000 /* cmos_cmd set */
5001 } else
5002 return -EINVAL;
5003
c9bea99c
HMH		 5004 res = issue_thinkpad_cmos_command(cmos_cmd);
5005 if (res)
5006 return res;
1da177e4
LT		 5007 }
5008
5009 return 0;
78f81cc4
BD		 5010}
5011
a5763f22
HMH		 5012static struct ibm_struct cmos_driver_data = {
5013 .name = "cmos",
5014 .read = cmos_read,
5015 .write = cmos_write,
b616004c 5016 .exit = cmos_exit,
a5763f22 5017};
56b6aeb0
HMH		 5018
5019/*************************************************************************
5020 * LED subdriver
5021 */
5022
f74a27d4
HMH		 5023enum led_access_mode {
5024 TPACPI_LED_NONE = 0,
5025 TPACPI_LED_570, /* 570 */
5026 TPACPI_LED_OLD, /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20-21 */
5027 TPACPI_LED_NEW, /* all others */
5028};
5029
5030enum { /* For TPACPI_LED_OLD */
5031 TPACPI_LED_EC_HLCL = 0x0c, /* EC reg to get led to power on */
5032 TPACPI_LED_EC_HLBL = 0x0d, /* EC reg to blink a lit led */
5033 TPACPI_LED_EC_HLMS = 0x0e, /* EC reg to select led to command */
5034};
5035
9a8e1738 5036static enum led_access_mode led_supported;
78f81cc4 5037
2cbb5c8f 5038static acpi_handle led_handle;
56b6aeb0 5039
f21179a4 5040#define TPACPI_LED_NUMLEDS 16
af116101
HMH		 5041static struct tpacpi_led_classdev *tpacpi_leds;
5042static enum led_status_t tpacpi_led_state_cache[TPACPI_LED_NUMLEDS];
e3aa51fe 5043static const char * const tpacpi_led_names[TPACPI_LED_NUMLEDS] = {
af116101
HMH		 5044 /* there's a limit of 19 chars + NULL before 2.6.26 */
5045 "tpacpi::power",
5046 "tpacpi:orange:batt",
5047 "tpacpi:green:batt",
5048 "tpacpi::dock_active",
5049 "tpacpi::bay_active",
5050 "tpacpi::dock_batt",
5051 "tpacpi::unknown_led",
5052 "tpacpi::standby",
f21179a4
HMH		 5053 "tpacpi::dock_status1",
5054 "tpacpi::dock_status2",
5055 "tpacpi::unknown_led2",
5056 "tpacpi::unknown_led3",
5057 "tpacpi::thinkvantage",
af116101 5058};
f21179a4 5059#define TPACPI_SAFE_LEDS 0x1081U
a4d5effc
HMH		 5060
5061static inline bool tpacpi_is_led_restricted(const unsigned int led)
5062{
5063#ifdef CONFIG_THINKPAD_ACPI_UNSAFE_LEDS
5064 return false;
5065#else
f21179a4 5066 return (1U & (TPACPI_SAFE_LEDS >> led)) == 0;
a4d5effc
HMH		 5067#endif
5068}
af116101 5069
24e45bbe 5070static int led_get_status(const unsigned int led)
4fa6811b
HMH		 5071{
5072 int status;
af116101 5073 enum led_status_t led_s;
4fa6811b
HMH		 5074
5075 switch (led_supported) {
5076 case TPACPI_LED_570:
5077 if (!acpi_evalf(ec_handle,
5078 &status, "GLED", "dd", 1 << led))
5079 return -EIO;
af116101 5080 led_s = (status == 0)?
4fa6811b
HMH		 5081 TPACPI_LED_OFF :
5082 ((status == 1)?
5083 TPACPI_LED_ON :
5084 TPACPI_LED_BLINK);
af116101
HMH		 5085 tpacpi_led_state_cache[led] = led_s;
5086 return led_s;
4fa6811b
HMH		 5087 default:
5088 return -ENXIO;
5089 }
5090
5091 /* not reached */
5092}
5093
24e45bbe
HMH		 5094static int led_set_status(const unsigned int led,
5095 const enum led_status_t ledstatus)
4fa6811b
HMH		 5096{
5097 /* off, on, blink. Index is led_status_t */
24e45bbe
HMH		 5098 static const unsigned int led_sled_arg1[] = { 0, 1, 3 };
5099 static const unsigned int led_led_arg1[] = { 0, 0x80, 0xc0 };
4fa6811b
HMH		 5100
5101 int rc = 0;
5102
5103 switch (led_supported) {
5104 case TPACPI_LED_570:
24e45bbe 5105 /* 570 */
a4d5effc 5106 if (unlikely(led > 7))
24e45bbe 5107 return -EINVAL;
a4d5effc
HMH		 5108 if (unlikely(tpacpi_is_led_restricted(led)))
5109 return -EPERM;
24e45bbe
HMH		 5110 if (!acpi_evalf(led_handle, NULL, NULL, "vdd",
5111 (1 << led), led_sled_arg1[ledstatus]))
5112 rc = -EIO;
5113 break;
4fa6811b 5114 case TPACPI_LED_OLD:
24e45bbe 5115 /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20 */
a4d5effc 5116 if (unlikely(led > 7))
24e45bbe 5117 return -EINVAL;
a4d5effc
HMH		 5118 if (unlikely(tpacpi_is_led_restricted(led)))
5119 return -EPERM;
24e45bbe
HMH		 5120 rc = ec_write(TPACPI_LED_EC_HLMS, (1 << led));
5121 if (rc >= 0)
5122 rc = ec_write(TPACPI_LED_EC_HLBL,
5123 (ledstatus == TPACPI_LED_BLINK) << led);
5124 if (rc >= 0)
5125 rc = ec_write(TPACPI_LED_EC_HLCL,
5126 (ledstatus != TPACPI_LED_OFF) << led);
5127 break;
4fa6811b 5128 case TPACPI_LED_NEW:
24e45bbe 5129 /* all others */
a4d5effc
HMH		 5130 if (unlikely(led >= TPACPI_LED_NUMLEDS))
5131 return -EINVAL;
5132 if (unlikely(tpacpi_is_led_restricted(led)))
5133 return -EPERM;
24e45bbe
HMH		 5134 if (!acpi_evalf(led_handle, NULL, NULL, "vdd",
5135 led, led_led_arg1[ledstatus]))
5136 rc = -EIO;
5137 break;
4fa6811b
HMH		 5138 default:
5139 rc = -ENXIO;
5140 }
5141
af116101
HMH		 5142 if (!rc)
5143 tpacpi_led_state_cache[led] = ledstatus;
5144
5145 return rc;
5146}
5147
af116101
HMH		 5148static void led_set_status_worker(struct work_struct *work)
5149{
5150 struct tpacpi_led_classdev *data =
5151 container_of(work, struct tpacpi_led_classdev, work);
5152
5153 if (likely(tpacpi_lifecycle == TPACPI_LIFE_RUNNING))
75bd3bf2 5154 led_set_status(data->led, data->new_state);
af116101
HMH		 5155}
5156
5157static void led_sysfs_set(struct led_classdev *led_cdev,
5158 enum led_brightness brightness)
5159{
5160 struct tpacpi_led_classdev *data = container_of(led_cdev,
5161 struct tpacpi_led_classdev, led_classdev);
5162
75bd3bf2
HMH		 5163 if (brightness == LED_OFF)
5164 data->new_state = TPACPI_LED_OFF;
5165 else if (tpacpi_led_state_cache[data->led] != TPACPI_LED_BLINK)
5166 data->new_state = TPACPI_LED_ON;
5167 else
5168 data->new_state = TPACPI_LED_BLINK;
5169
e0e3c061 5170 queue_work(tpacpi_wq, &data->work);
af116101
HMH		 5171}
5172
5173static int led_sysfs_blink_set(struct led_classdev *led_cdev,
5174 unsigned long *delay_on, unsigned long *delay_off)
5175{
5176 struct tpacpi_led_classdev *data = container_of(led_cdev,
5177 struct tpacpi_led_classdev, led_classdev);
5178
5179 /* Can we choose the flash rate? */
5180 if (*delay_on == 0 && *delay_off == 0) {
5181 /* yes. set them to the hardware blink rate (1 Hz) */
5182 *delay_on = 500; /* ms */
5183 *delay_off = 500; /* ms */
5184 } else if ((*delay_on != 500) || (*delay_off != 500))
5185 return -EINVAL;
5186
75bd3bf2 5187 data->new_state = TPACPI_LED_BLINK;
e0e3c061 5188 queue_work(tpacpi_wq, &data->work);
af116101
HMH		 5189
5190 return 0;
5191}
5192
5193static enum led_brightness led_sysfs_get(struct led_classdev *led_cdev)
5194{
5195 int rc;
5196
5197 struct tpacpi_led_classdev *data = container_of(led_cdev,
5198 struct tpacpi_led_classdev, led_classdev);
5199
5200 rc = led_get_status(data->led);
5201
5202 if (rc == TPACPI_LED_OFF || rc < 0)
5203 rc = LED_OFF; /* no error handling in led class :( */
5204 else
5205 rc = LED_FULL;
5206
4fa6811b
HMH		 5207 return rc;
5208}
5209
af116101
HMH		 5210static void led_exit(void)
5211{
5212 unsigned int i;
5213
5214 for (i = 0; i < TPACPI_LED_NUMLEDS; i++) {
5215 if (tpacpi_leds[i].led_classdev.name)
5216 led_classdev_unregister(&tpacpi_leds[i].led_classdev);
5217 }
5218
5219 kfree(tpacpi_leds);
af116101
HMH		 5220}
5221
a4d5effc
HMH		 5222static int __init tpacpi_init_led(unsigned int led)
5223{
5224 int rc;
5225
5226 tpacpi_leds[led].led = led;
5227
f21179a4
HMH		 5228 /* LEDs with no name don't get registered */
5229 if (!tpacpi_led_names[led])
5230 return 0;
5231
a4d5effc
HMH		 5232 tpacpi_leds[led].led_classdev.brightness_set = &led_sysfs_set;
5233 tpacpi_leds[led].led_classdev.blink_set = &led_sysfs_blink_set;
5234 if (led_supported == TPACPI_LED_570)
5235 tpacpi_leds[led].led_classdev.brightness_get =
5236 &led_sysfs_get;
5237
5238 tpacpi_leds[led].led_classdev.name = tpacpi_led_names[led];
5239
5240 INIT_WORK(&tpacpi_leds[led].work, led_set_status_worker);
5241
5242 rc = led_classdev_register(&tpacpi_pdev->dev,
5243 &tpacpi_leds[led].led_classdev);
5244 if (rc < 0)
5245 tpacpi_leds[led].led_classdev.name = NULL;
5246
5247 return rc;
5248}
5249
f21179a4
HMH		 5250static const struct tpacpi_quirk led_useful_qtable[] __initconst = {
5251 TPACPI_Q_IBM('1', 'E', 0x009f), /* A30 */
5252 TPACPI_Q_IBM('1', 'N', 0x009f), /* A31 */
5253 TPACPI_Q_IBM('1', 'G', 0x009f), /* A31 */
5254
5255 TPACPI_Q_IBM('1', 'I', 0x0097), /* T30 */
5256 TPACPI_Q_IBM('1', 'R', 0x0097), /* T40, T41, T42, R50, R51 */
5257 TPACPI_Q_IBM('7', '0', 0x0097), /* T43, R52 */
5258 TPACPI_Q_IBM('1', 'Y', 0x0097), /* T43 */
5259 TPACPI_Q_IBM('1', 'W', 0x0097), /* R50e */
5260 TPACPI_Q_IBM('1', 'V', 0x0097), /* R51 */
5261 TPACPI_Q_IBM('7', '8', 0x0097), /* R51e */
5262 TPACPI_Q_IBM('7', '6', 0x0097), /* R52 */
5263
5264 TPACPI_Q_IBM('1', 'K', 0x00bf), /* X30 */
5265 TPACPI_Q_IBM('1', 'Q', 0x00bf), /* X31, X32 */
5266 TPACPI_Q_IBM('1', 'U', 0x00bf), /* X40 */
5267 TPACPI_Q_IBM('7', '4', 0x00bf), /* X41 */
5268 TPACPI_Q_IBM('7', '5', 0x00bf), /* X41t */
5269
5270 TPACPI_Q_IBM('7', '9', 0x1f97), /* T60 (1) */
5271 TPACPI_Q_IBM('7', '7', 0x1f97), /* Z60* (1) */
5272 TPACPI_Q_IBM('7', 'F', 0x1f97), /* Z61* (1) */
5273 TPACPI_Q_IBM('7', 'B', 0x1fb7), /* X60 (1) */
5274
5275 /* (1) - may have excess leds enabled on MSB */
5276
5277 /* Defaults (order matters, keep last, don't reorder!) */
5278 { /* Lenovo */
5279 .vendor = PCI_VENDOR_ID_LENOVO,
5280 .bios = TPACPI_MATCH_ANY, .ec = TPACPI_MATCH_ANY,
5281 .quirks = 0x1fffU,
5282 },
5283 { /* IBM ThinkPads with no EC version string */
5284 .vendor = PCI_VENDOR_ID_IBM,
5285 .bios = TPACPI_MATCH_ANY, .ec = TPACPI_MATCH_UNKNOWN,
5286 .quirks = 0x00ffU,
5287 },
5288 { /* IBM ThinkPads with EC version string */
5289 .vendor = PCI_VENDOR_ID_IBM,
5290 .bios = TPACPI_MATCH_ANY, .ec = TPACPI_MATCH_ANY,
5291 .quirks = 0x00bfU,
5292 },
5293};
5294
5295#undef TPACPI_LEDQ_IBM
5296#undef TPACPI_LEDQ_LNV
5297
2cbb5c8f
HMH		 5298static enum led_access_mode __init led_init_detect_mode(void)
5299{
5300 acpi_status status;
5301
5302 if (tpacpi_is_ibm()) {
5303 /* 570 */
5304 status = acpi_get_handle(ec_handle, "SLED", &led_handle);
5305 if (ACPI_SUCCESS(status))
5306 return TPACPI_LED_570;
5307
5308 /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20-21 */
5309 status = acpi_get_handle(ec_handle, "SYSL", &led_handle);
5310 if (ACPI_SUCCESS(status))
5311 return TPACPI_LED_OLD;
5312 }
5313
5314 /* most others */
5315 status = acpi_get_handle(ec_handle, "LED", &led_handle);
5316 if (ACPI_SUCCESS(status))
5317 return TPACPI_LED_NEW;
5318
5319 /* R30, R31, and unknown firmwares */
5320 led_handle = NULL;
5321 return TPACPI_LED_NONE;
5322}
5323
a5763f22 5324static int __init led_init(struct ibm_init_struct *iibm)
78f81cc4 5325{
af116101
HMH		 5326 unsigned int i;
5327 int rc;
f21179a4 5328 unsigned long useful_leds;
af116101 5329
fe08bc4b
HMH		 5330 vdbg_printk(TPACPI_DBG_INIT, "initializing LED subdriver\n");
5331
2cbb5c8f 5332 led_supported = led_init_detect_mode();
78f81cc4 5333
fe08bc4b
HMH		 5334 vdbg_printk(TPACPI_DBG_INIT, "LED commands are %s, mode %d\n",
5335 str_supported(led_supported), led_supported);
5336
f21179a4
HMH		 5337 if (led_supported == TPACPI_LED_NONE)
5338 return 1;
5339
af116101
HMH		 5340 tpacpi_leds = kzalloc(sizeof(*tpacpi_leds) * TPACPI_LED_NUMLEDS,
5341 GFP_KERNEL);
5342 if (!tpacpi_leds) {
0978e012 5343 pr_err("Out of memory for LED data\n");
af116101
HMH		 5344 return -ENOMEM;
5345 }
5346
f21179a4
HMH		 5347 useful_leds = tpacpi_check_quirks(led_useful_qtable,
5348 ARRAY_SIZE(led_useful_qtable));
5349
af116101 5350 for (i = 0; i < TPACPI_LED_NUMLEDS; i++) {
f21179a4
HMH		 5351 if (!tpacpi_is_led_restricted(i) &&
5352 test_bit(i, &useful_leds)) {
a4d5effc
HMH		 5353 rc = tpacpi_init_led(i);
5354 if (rc < 0) {
5355 led_exit();
5356 return rc;
5357 }
af116101
HMH		 5358 }
5359 }
5360
a4d5effc 5361#ifdef CONFIG_THINKPAD_ACPI_UNSAFE_LEDS
0978e012
JP		 5362 pr_notice("warning: userspace override of important "
5363 "firmware LEDs is enabled\n");
a4d5effc 5364#endif
f21179a4 5365 return 0;
78f81cc4
BD		 5366}
5367
4fa6811b
HMH		 5368#define str_led_status(s) \
5369 ((s) == TPACPI_LED_OFF ? "off" : \
5370 ((s) == TPACPI_LED_ON ? "on" : "blinking"))
78f81cc4 5371
887965e6 5372static int led_read(struct seq_file *m)
1da177e4 5373{
78f81cc4 5374 if (!led_supported) {
887965e6
AD		 5375 seq_printf(m, "status:\t\tnot supported\n");
5376 return 0;
78f81cc4 5377 }
887965e6 5378 seq_printf(m, "status:\t\tsupported\n");
78f81cc4 5379
efa27145 5380 if (led_supported == TPACPI_LED_570) {
78f81cc4
BD		 5381 /* 570 */
5382 int i, status;
5383 for (i = 0; i < 8; i++) {
4fa6811b
HMH		 5384 status = led_get_status(i);
5385 if (status < 0)
78f81cc4 5386 return -EIO;
887965e6 5387 seq_printf(m, "%d:\t\t%s\n",
4fa6811b 5388 i, str_led_status(status));
78f81cc4
BD		 5389 }
5390 }
5391
887965e6 5392 seq_printf(m, "commands:\t"
f21179a4 5393 "<led> on, <led> off, <led> blink (<led> is 0-15)\n");
1da177e4 5394
887965e6 5395 return 0;
1da177e4
LT		 5396}
5397
78f81cc4 5398static int led_write(char *buf)
1da177e4
LT		 5399{
5400 char *cmd;
4fa6811b
HMH		 5401 int led, rc;
5402 enum led_status_t s;
78f81cc4
BD		 5403
5404 if (!led_supported)
5405 return -ENODEV;
1da177e4
LT		 5406
5407 while ((cmd = next_cmd(&buf))) {
f21179a4 5408 if (sscanf(cmd, "%d", &led) != 1 || led < 0 || led > 15)
1da177e4
LT		 5409 return -EINVAL;
5410
78f81cc4 5411 if (strstr(cmd, "off")) {
4fa6811b 5412 s = TPACPI_LED_OFF;
1da177e4 5413 } else if (strstr(cmd, "on")) {
4fa6811b 5414 s = TPACPI_LED_ON;
78f81cc4 5415 } else if (strstr(cmd, "blink")) {
4fa6811b 5416 s = TPACPI_LED_BLINK;
78f81cc4 5417 } else {
4fa6811b 5418 return -EINVAL;
78f81cc4 5419 }
4fa6811b
HMH		 5420
5421 rc = led_set_status(led, s);
5422 if (rc < 0)
5423 return rc;
78f81cc4
BD		 5424 }
5425
5426 return 0;
5427}
5428
a5763f22
HMH		 5429static struct ibm_struct led_driver_data = {
5430 .name = "led",
5431 .read = led_read,
5432 .write = led_write,
af116101 5433 .exit = led_exit,
a5763f22
HMH		 5434};
5435
56b6aeb0
HMH		 5436/*************************************************************************
5437 * Beep subdriver
5438 */
5439
e0c7dfe7 5440TPACPI_HANDLE(beep, ec, "BEEP"); /* all except R30, R31 */
56b6aeb0 5441
60201732
HMH		 5442#define TPACPI_BEEP_Q1 0x0001
5443
5444static const struct tpacpi_quirk beep_quirk_table[] __initconst = {
5445 TPACPI_Q_IBM('I', 'M', TPACPI_BEEP_Q1), /* 570 */
5446 TPACPI_Q_IBM('I', 'U', TPACPI_BEEP_Q1), /* 570E - unverified */
5447};
5448
a5763f22 5449static int __init beep_init(struct ibm_init_struct *iibm)
5fba344c 5450{
60201732
HMH		 5451 unsigned long quirks;
5452
fe08bc4b
HMH		 5453 vdbg_printk(TPACPI_DBG_INIT, "initializing beep subdriver\n");
5454
e0c7dfe7 5455 TPACPI_ACPIHANDLE_INIT(beep);
5fba344c 5456
fe08bc4b
HMH		 5457 vdbg_printk(TPACPI_DBG_INIT, "beep is %s\n",
5458 str_supported(beep_handle != NULL));
5459
60201732
HMH		 5460 quirks = tpacpi_check_quirks(beep_quirk_table,
5461 ARRAY_SIZE(beep_quirk_table));
5462
5463 tp_features.beep_needs_two_args = !!(quirks & TPACPI_BEEP_Q1);
5464
5fba344c
HMH		 5465 return (beep_handle)? 0 : 1;
5466}
5467
887965e6 5468static int beep_read(struct seq_file *m)
78f81cc4 5469{
78f81cc4 5470 if (!beep_handle)
887965e6 5471 seq_printf(m, "status:\t\tnot supported\n");
78f81cc4 5472 else {
887965e6
AD		 5473 seq_printf(m, "status:\t\tsupported\n");
5474 seq_printf(m, "commands:\t<cmd> (<cmd> is 0-17)\n");
78f81cc4
BD		 5475 }
5476
887965e6 5477 return 0;
78f81cc4
BD		 5478}
5479
5480static int beep_write(char *buf)
5481{
5482 char *cmd;
5483 int beep_cmd;
5484
5485 if (!beep_handle)
5486 return -ENODEV;
5487
5488 while ((cmd = next_cmd(&buf))) {
5489 if (sscanf(cmd, "%u", &beep_cmd) == 1 &&
5490 beep_cmd >= 0 && beep_cmd <= 17) {
5491 /* beep_cmd set */
5492 } else
5493 return -EINVAL;
60201732
HMH		 5494 if (tp_features.beep_needs_two_args) {
5495 if (!acpi_evalf(beep_handle, NULL, NULL, "vdd",
5496 beep_cmd, 0))
5497 return -EIO;
5498 } else {
5499 if (!acpi_evalf(beep_handle, NULL, NULL, "vd",
5500 beep_cmd))
5501 return -EIO;
5502 }
78f81cc4
BD		 5503 }
5504
5505 return 0;
5506}
5507
a5763f22
HMH		 5508static struct ibm_struct beep_driver_data = {
5509 .name = "beep",
5510 .read = beep_read,
5511 .write = beep_write,
5512};
5513
56b6aeb0
HMH		 5514/*************************************************************************
5515 * Thermal subdriver
5516 */
78f81cc4 5517
f74a27d4
HMH		 5518enum thermal_access_mode {
5519 TPACPI_THERMAL_NONE = 0, /* No thermal support */
5520 TPACPI_THERMAL_ACPI_TMP07, /* Use ACPI TMP0-7 */
5521 TPACPI_THERMAL_ACPI_UPDT, /* Use ACPI TMP0-7 with UPDT */
5522 TPACPI_THERMAL_TPEC_8, /* Use ACPI EC regs, 8 sensors */
5523 TPACPI_THERMAL_TPEC_16, /* Use ACPI EC regs, 16 sensors */
5524};
5525
5526enum { /* TPACPI_THERMAL_TPEC_* */
5527 TP_EC_THERMAL_TMP0 = 0x78, /* ACPI EC regs TMP 0..7 */
5528 TP_EC_THERMAL_TMP8 = 0xC0, /* ACPI EC regs TMP 8..15 */
5529 TP_EC_THERMAL_TMP_NA = -128, /* ACPI EC sensor not available */
9ebd9e83
HMH		 5530
5531 TPACPI_THERMAL_SENSOR_NA = -128000, /* Sensor not available */
f74a27d4
HMH		 5532};
5533
9ebd9e83 5534
f74a27d4
HMH		 5535#define TPACPI_MAX_THERMAL_SENSORS 16 /* Max thermal sensors supported */
5536struct ibm_thermal_sensors_struct {
5537 s32 temp[TPACPI_MAX_THERMAL_SENSORS];
5538};
5539
a26f878a 5540static enum thermal_access_mode thermal_read_mode;
78f81cc4 5541
b21a15f6
HMH		 5542/* idx is zero-based */
5543static int thermal_get_sensor(int idx, s32 *value)
5544{
5545 int t;
5546 s8 tmp;
5547 char tmpi[5];
5548
5549 t = TP_EC_THERMAL_TMP0;
5550
5551 switch (thermal_read_mode) {
5552#if TPACPI_MAX_THERMAL_SENSORS >= 16
5553 case TPACPI_THERMAL_TPEC_16:
5554 if (idx >= 8 && idx <= 15) {
5555 t = TP_EC_THERMAL_TMP8;
5556 idx -= 8;
5557 }
5558 /* fallthrough */
5559#endif
5560 case TPACPI_THERMAL_TPEC_8:
5561 if (idx <= 7) {
5562 if (!acpi_ec_read(t + idx, &tmp))
5563 return -EIO;
5564 *value = tmp * 1000;
5565 return 0;
5566 }
5567 break;
5568
5569 case TPACPI_THERMAL_ACPI_UPDT:
5570 if (idx <= 7) {
5571 snprintf(tmpi, sizeof(tmpi), "TMP%c", '0' + idx);
5572 if (!acpi_evalf(ec_handle, NULL, "UPDT", "v"))
5573 return -EIO;
5574 if (!acpi_evalf(ec_handle, &t, tmpi, "d"))
5575 return -EIO;
5576 *value = (t - 2732) * 100;
5577 return 0;
5578 }
5579 break;
5580
5581 case TPACPI_THERMAL_ACPI_TMP07:
5582 if (idx <= 7) {
5583 snprintf(tmpi, sizeof(tmpi), "TMP%c", '0' + idx);
5584 if (!acpi_evalf(ec_handle, &t, tmpi, "d"))
5585 return -EIO;
5586 if (t > 127 || t < -127)
5587 t = TP_EC_THERMAL_TMP_NA;
5588 *value = t * 1000;
5589 return 0;
5590 }
5591 break;
5592
5593 case TPACPI_THERMAL_NONE:
5594 default:
5595 return -ENOSYS;
5596 }
5597
5598 return -EINVAL;
5599}
5600
5601static int thermal_get_sensors(struct ibm_thermal_sensors_struct *s)
5602{
5603 int res, i;
5604 int n;
5605
5606 n = 8;
5607 i = 0;
5608
5609 if (!s)
5610 return -EINVAL;
5611
5612 if (thermal_read_mode == TPACPI_THERMAL_TPEC_16)
5613 n = 16;
5614
35ff8b9f 5615 for (i = 0 ; i < n; i++) {
b21a15f6
HMH		 5616 res = thermal_get_sensor(i, &s->temp[i]);
5617 if (res)
5618 return res;
5619 }
5620
5621 return n;
5622}
f74a27d4 5623
9ebd9e83
HMH		 5624static void thermal_dump_all_sensors(void)
5625{
5626 int n, i;
5627 struct ibm_thermal_sensors_struct t;
5628
5629 n = thermal_get_sensors(&t);
5630 if (n <= 0)
5631 return;
5632
0978e012 5633 pr_notice("temperatures (Celsius):");
9ebd9e83
HMH		 5634
5635 for (i = 0; i < n; i++) {
5636 if (t.temp[i] != TPACPI_THERMAL_SENSOR_NA)
0978e012 5637 pr_cont(" %d", (int)(t.temp[i] / 1000));
9ebd9e83 5638 else
0978e012 5639 pr_cont(" N/A");
9ebd9e83
HMH		 5640 }
5641
0978e012 5642 pr_cont("\n");
9ebd9e83
HMH		 5643}
5644
2c37aa4e
HMH		 5645/* sysfs temp##_input -------------------------------------------------- */
5646
5647static ssize_t thermal_temp_input_show(struct device *dev,
5648 struct device_attribute *attr,
5649 char *buf)
5650{
5651 struct sensor_device_attribute *sensor_attr =
5652 to_sensor_dev_attr(attr);
5653 int idx = sensor_attr->index;
5654 s32 value;
5655 int res;
5656
5657 res = thermal_get_sensor(idx, &value);
5658 if (res)
5659 return res;
9ebd9e83 5660 if (value == TPACPI_THERMAL_SENSOR_NA)
2c37aa4e
HMH		 5661 return -ENXIO;
5662
5663 return snprintf(buf, PAGE_SIZE, "%d\n", value);
5664}
5665
5666#define THERMAL_SENSOR_ATTR_TEMP(_idxA, _idxB) \
35ff8b9f
HMH		 5667 SENSOR_ATTR(temp##_idxA##_input, S_IRUGO, \
5668 thermal_temp_input_show, NULL, _idxB)
2c37aa4e
HMH		 5669
5670static struct sensor_device_attribute sensor_dev_attr_thermal_temp_input[] = {
5671 THERMAL_SENSOR_ATTR_TEMP(1, 0),
5672 THERMAL_SENSOR_ATTR_TEMP(2, 1),
5673 THERMAL_SENSOR_ATTR_TEMP(3, 2),
5674 THERMAL_SENSOR_ATTR_TEMP(4, 3),
5675 THERMAL_SENSOR_ATTR_TEMP(5, 4),
5676 THERMAL_SENSOR_ATTR_TEMP(6, 5),
5677 THERMAL_SENSOR_ATTR_TEMP(7, 6),
5678 THERMAL_SENSOR_ATTR_TEMP(8, 7),
5679 THERMAL_SENSOR_ATTR_TEMP(9, 8),
5680 THERMAL_SENSOR_ATTR_TEMP(10, 9),
5681 THERMAL_SENSOR_ATTR_TEMP(11, 10),
5682 THERMAL_SENSOR_ATTR_TEMP(12, 11),
5683 THERMAL_SENSOR_ATTR_TEMP(13, 12),
5684 THERMAL_SENSOR_ATTR_TEMP(14, 13),
5685 THERMAL_SENSOR_ATTR_TEMP(15, 14),
5686 THERMAL_SENSOR_ATTR_TEMP(16, 15),
5687};
5688
5689#define THERMAL_ATTRS(X) \
5690 &sensor_dev_attr_thermal_temp_input[X].dev_attr.attr
5691
5692static struct attribute *thermal_temp_input_attr[] = {
5693 THERMAL_ATTRS(8),
5694 THERMAL_ATTRS(9),
5695 THERMAL_ATTRS(10),
5696 THERMAL_ATTRS(11),
5697 THERMAL_ATTRS(12),
5698 THERMAL_ATTRS(13),
5699 THERMAL_ATTRS(14),
5700 THERMAL_ATTRS(15),
5701 THERMAL_ATTRS(0),
5702 THERMAL_ATTRS(1),
5703 THERMAL_ATTRS(2),
5704 THERMAL_ATTRS(3),
5705 THERMAL_ATTRS(4),
5706 THERMAL_ATTRS(5),
5707 THERMAL_ATTRS(6),
5708 THERMAL_ATTRS(7),
5709 NULL
5710};
5711
5712static const struct attribute_group thermal_temp_input16_group = {
5713 .attrs = thermal_temp_input_attr
5714};
5715
5716static const struct attribute_group thermal_temp_input8_group = {
5717 .attrs = &thermal_temp_input_attr[8]
5718};
5719
5720#undef THERMAL_SENSOR_ATTR_TEMP
5721#undef THERMAL_ATTRS
5722
5723/* --------------------------------------------------------------------- */
5724
a5763f22 5725static int __init thermal_init(struct ibm_init_struct *iibm)
78f81cc4 5726{
60eb0b35
HMH		 5727 u8 t, ta1, ta2;
5728 int i;
5fba344c 5729 int acpi_tmp7;
2c37aa4e 5730 int res;
5fba344c 5731
fe08bc4b
HMH		 5732 vdbg_printk(TPACPI_DBG_INIT, "initializing thermal subdriver\n");
5733
5fba344c 5734 acpi_tmp7 = acpi_evalf(ec_handle, NULL, "TMP7", "qv");
60eb0b35 5735
3d6f99ca 5736 if (thinkpad_id.ec_model) {
60eb0b35
HMH		 5737 /*
5738 * Direct EC access mode: sensors at registers
5739 * 0x78-0x7F, 0xC0-0xC7. Registers return 0x00 for
5740 * non-implemented, thermal sensors return 0x80 when
5741 * not available
5742 */
78f81cc4 5743
60eb0b35
HMH		 5744 ta1 = ta2 = 0;
5745 for (i = 0; i < 8; i++) {
04cc862c 5746 if (acpi_ec_read(TP_EC_THERMAL_TMP0 + i, &t)) {
60eb0b35
HMH		 5747 ta1 |= t;
5748 } else {
5749 ta1 = 0;
5750 break;
5751 }
04cc862c 5752 if (acpi_ec_read(TP_EC_THERMAL_TMP8 + i, &t)) {
60eb0b35
HMH		 5753 ta2 |= t;
5754 } else {
5755 ta1 = 0;
5756 break;
5757 }
5758 }
5759 if (ta1 == 0) {
5760 /* This is sheer paranoia, but we handle it anyway */
5761 if (acpi_tmp7) {
0978e012 5762 pr_err("ThinkPad ACPI EC access misbehaving, "
35ff8b9f
HMH		 5763 "falling back to ACPI TMPx access "
5764 "mode\n");
efa27145 5765 thermal_read_mode = TPACPI_THERMAL_ACPI_TMP07;
60eb0b35 5766 } else {
0978e012 5767 pr_err("ThinkPad ACPI EC access misbehaving, "
60eb0b35 5768 "disabling thermal sensors access\n");
efa27145 5769 thermal_read_mode = TPACPI_THERMAL_NONE;
60eb0b35
HMH		 5770 }
5771 } else {
5772 thermal_read_mode =
5773 (ta2 != 0) ?
efa27145 5774 TPACPI_THERMAL_TPEC_16 : TPACPI_THERMAL_TPEC_8;
60eb0b35
HMH		 5775 }
5776 } else if (acpi_tmp7) {
e28393c0
HMH		 5777 if (tpacpi_is_ibm() &&
5778 acpi_evalf(ec_handle, NULL, "UPDT", "qv")) {
a26f878a 5779 /* 600e/x, 770e, 770x */
efa27145 5780 thermal_read_mode = TPACPI_THERMAL_ACPI_UPDT;
a26f878a 5781 } else {
e28393c0 5782 /* IBM/LENOVO DSDT EC.TMPx access, max 8 sensors */
efa27145 5783 thermal_read_mode = TPACPI_THERMAL_ACPI_TMP07;
a26f878a
HMH		 5784 }
5785 } else {
5786 /* temperatures not supported on 570, G4x, R30, R31, R32 */
efa27145 5787 thermal_read_mode = TPACPI_THERMAL_NONE;
a26f878a 5788 }
78f81cc4 5789
fe08bc4b
HMH		 5790 vdbg_printk(TPACPI_DBG_INIT, "thermal is %s, mode %d\n",
5791 str_supported(thermal_read_mode != TPACPI_THERMAL_NONE),
5792 thermal_read_mode);
5793
35ff8b9f 5794 switch (thermal_read_mode) {
2c37aa4e 5795 case TPACPI_THERMAL_TPEC_16:
7fd40029 5796 res = sysfs_create_group(&tpacpi_sensors_pdev->dev.kobj,
2c37aa4e
HMH		 5797 &thermal_temp_input16_group);
5798 if (res)
5799 return res;
5800 break;
5801 case TPACPI_THERMAL_TPEC_8:
5802 case TPACPI_THERMAL_ACPI_TMP07:
5803 case TPACPI_THERMAL_ACPI_UPDT:
7fd40029 5804 res = sysfs_create_group(&tpacpi_sensors_pdev->dev.kobj,
2c37aa4e
HMH		 5805 &thermal_temp_input8_group);
5806 if (res)
5807 return res;
5808 break;
5809 case TPACPI_THERMAL_NONE:
5810 default:
5811 return 1;
5812 }
5813
5814 return 0;
5815}
5816
5817static void thermal_exit(void)
5818{
35ff8b9f 5819 switch (thermal_read_mode) {
2c37aa4e 5820 case TPACPI_THERMAL_TPEC_16:
7fd40029 5821 sysfs_remove_group(&tpacpi_sensors_pdev->dev.kobj,
2c37aa4e
HMH		 5822 &thermal_temp_input16_group);
5823 break;
5824 case TPACPI_THERMAL_TPEC_8:
5825 case TPACPI_THERMAL_ACPI_TMP07:
5826 case TPACPI_THERMAL_ACPI_UPDT:
7fd40029 5827 sysfs_remove_group(&tpacpi_sensors_pdev->dev.kobj,
f04d5e01 5828 &thermal_temp_input8_group);
2c37aa4e
HMH		 5829 break;
5830 case TPACPI_THERMAL_NONE:
5831 default:
5832 break;
5833 }
78f81cc4
BD		 5834}
5835
887965e6 5836static int thermal_read(struct seq_file *m)
a26f878a 5837{
a26f878a
HMH		 5838 int n, i;
5839 struct ibm_thermal_sensors_struct t;
5840
5841 n = thermal_get_sensors(&t);
5842 if (unlikely(n < 0))
5843 return n;
5844
887965e6 5845 seq_printf(m, "temperatures:\t");
a26f878a
HMH		 5846
5847 if (n > 0) {
5848 for (i = 0; i < (n - 1); i++)
887965e6
AD		 5849 seq_printf(m, "%d ", t.temp[i] / 1000);
5850 seq_printf(m, "%d\n", t.temp[i] / 1000);
a26f878a 5851 } else
887965e6 5852 seq_printf(m, "not supported\n");
78f81cc4 5853
887965e6 5854 return 0;
78f81cc4
BD		 5855}
5856
a5763f22
HMH		 5857static struct ibm_struct thermal_driver_data = {
5858 .name = "thermal",
5859 .read = thermal_read,
2c37aa4e 5860 .exit = thermal_exit,
a5763f22
HMH		 5861};
5862
56b6aeb0
HMH		 5863/*************************************************************************
5864 * Backlight/brightness subdriver
5865 */
5866
f74a27d4
HMH		 5867#define TPACPI_BACKLIGHT_DEV_NAME "thinkpad_screen"
5868
0e501834
HMH		 5869/*
5870 * ThinkPads can read brightness from two places: EC HBRV (0x31), or
5871 * CMOS NVRAM byte 0x5E, bits 0-3.
5872 *
5873 * EC HBRV (0x31) has the following layout
5874 * Bit 7: unknown function
5875 * Bit 6: unknown function
5876 * Bit 5: Z: honour scale changes, NZ: ignore scale changes
5877 * Bit 4: must be set to zero to avoid problems
5878 * Bit 3-0: backlight brightness level
5879 *
5880 * brightness_get_raw returns status data in the HBRV layout
d7880f10
HMH		 5881 *
5882 * WARNING: The X61 has been verified to use HBRV for something else, so
5883 * this should be used _only_ on IBM ThinkPads, and maybe with some careful
5884 * testing on the very early *60 Lenovo models...
0e501834
HMH		 5885 */
5886
e11aecf1
HMH		 5887enum {
5888 TP_EC_BACKLIGHT = 0x31,
5889
5890 /* TP_EC_BACKLIGHT bitmasks */
5891 TP_EC_BACKLIGHT_LVLMSK = 0x1F,
5892 TP_EC_BACKLIGHT_CMDMSK = 0xE0,
5893 TP_EC_BACKLIGHT_MAPSW = 0x20,
5894};
5895
0e501834
HMH		 5896enum tpacpi_brightness_access_mode {
5897 TPACPI_BRGHT_MODE_AUTO = 0, /* Not implemented yet */
5898 TPACPI_BRGHT_MODE_EC, /* EC control */
5899 TPACPI_BRGHT_MODE_UCMS_STEP, /* UCMS step-based control */
5900 TPACPI_BRGHT_MODE_ECNVRAM, /* EC control w/ NVRAM store */
5901 TPACPI_BRGHT_MODE_MAX
5902};
5903
94954cc6 5904static struct backlight_device *ibm_backlight_device;
0e501834
HMH		 5905
5906static enum tpacpi_brightness_access_mode brightness_mode =
5907 TPACPI_BRGHT_MODE_MAX;
5908
f74a27d4
HMH		 5909static unsigned int brightness_enable = 2; /* 2 = auto, 0 = no, 1 = yes */
5910
b21a15f6 5911static struct mutex brightness_mutex;
56b6aeb0 5912
0e501834
HMH		 5913/* NVRAM brightness access,
5914 * call with brightness_mutex held! */
5915static unsigned int tpacpi_brightness_nvram_get(void)
b21a15f6 5916{
0e501834 5917 u8 lnvram;
b21a15f6 5918
0e501834
HMH		 5919 lnvram = (nvram_read_byte(TP_NVRAM_ADDR_BRIGHTNESS)
5920 & TP_NVRAM_MASK_LEVEL_BRIGHTNESS)
5921 >> TP_NVRAM_POS_LEVEL_BRIGHTNESS;
77775838 5922 lnvram &= bright_maxlvl;
0e501834
HMH		 5923
5924 return lnvram;
5925}
5926
5927static void tpacpi_brightness_checkpoint_nvram(void)
5928{
5929 u8 lec = 0;
5930 u8 b_nvram;
5931
5932 if (brightness_mode != TPACPI_BRGHT_MODE_ECNVRAM)
5933 return;
5934
5935 vdbg_printk(TPACPI_DBG_BRGHT,
5936 "trying to checkpoint backlight level to NVRAM...\n");
5937
5938 if (mutex_lock_killable(&brightness_mutex) < 0)
5939 return;
5940
5941 if (unlikely(!acpi_ec_read(TP_EC_BACKLIGHT, &lec)))
5942 goto unlock;
5943 lec &= TP_EC_BACKLIGHT_LVLMSK;
5944 b_nvram = nvram_read_byte(TP_NVRAM_ADDR_BRIGHTNESS);
5945
5946 if (lec != ((b_nvram & TP_NVRAM_MASK_LEVEL_BRIGHTNESS)
5947 >> TP_NVRAM_POS_LEVEL_BRIGHTNESS)) {
5948 /* NVRAM needs update */
5949 b_nvram &= ~(TP_NVRAM_MASK_LEVEL_BRIGHTNESS <<
5950 TP_NVRAM_POS_LEVEL_BRIGHTNESS);
5951 b_nvram |= lec;
5952 nvram_write_byte(b_nvram, TP_NVRAM_ADDR_BRIGHTNESS);
5953 dbg_printk(TPACPI_DBG_BRGHT,
5954 "updated NVRAM backlight level to %u (0x%02x)\n",
5955 (unsigned int) lec, (unsigned int) b_nvram);
5956 } else
5957 vdbg_printk(TPACPI_DBG_BRGHT,
5958 "NVRAM backlight level already is %u (0x%02x)\n",
5959 (unsigned int) lec, (unsigned int) b_nvram);
5960
5961unlock:
5962 mutex_unlock(&brightness_mutex);
5963}
5964
5965
5966/* call with brightness_mutex held! */
5967static int tpacpi_brightness_get_raw(int *status)
5968{
5969 u8 lec = 0;
5970
5971 switch (brightness_mode) {
5972 case TPACPI_BRGHT_MODE_UCMS_STEP:
5973 *status = tpacpi_brightness_nvram_get();
5974 return 0;
5975 case TPACPI_BRGHT_MODE_EC:
5976 case TPACPI_BRGHT_MODE_ECNVRAM:
5977 if (unlikely(!acpi_ec_read(TP_EC_BACKLIGHT, &lec)))
2d5e94d7 5978 return -EIO;
0e501834
HMH		 5979 *status = lec;
5980 return 0;
5981 default:
5982 return -ENXIO;
b21a15f6 5983 }
0e501834
HMH		 5984}
5985
5986/* call with brightness_mutex held! */
5987/* do NOT call with illegal backlight level value */
5988static int tpacpi_brightness_set_ec(unsigned int value)
5989{
5990 u8 lec = 0;
5991
5992 if (unlikely(!acpi_ec_read(TP_EC_BACKLIGHT, &lec)))
5993 return -EIO;
5994
5995 if (unlikely(!acpi_ec_write(TP_EC_BACKLIGHT,
5996 (lec & TP_EC_BACKLIGHT_CMDMSK) |
5997 (value & TP_EC_BACKLIGHT_LVLMSK))))
5998 return -EIO;
5999
6000 return 0;
6001}
6002
6003/* call with brightness_mutex held! */
6004static int tpacpi_brightness_set_ucmsstep(unsigned int value)
6005{
6006 int cmos_cmd, inc;
6007 unsigned int current_value, i;
6008
6009 current_value = tpacpi_brightness_nvram_get();
6010
6011 if (value == current_value)
6012 return 0;
6013
6014 cmos_cmd = (value > current_value) ?
6015 TP_CMOS_BRIGHTNESS_UP :
6016 TP_CMOS_BRIGHTNESS_DOWN;
6017 inc = (value > current_value) ? 1 : -1;
6018
6019 for (i = current_value; i != value; i += inc)
6020 if (issue_thinkpad_cmos_command(cmos_cmd))
6021 return -EIO;
b21a15f6 6022
e11aecf1 6023 return 0;
b21a15f6
HMH		 6024}
6025
6026/* May return EINTR which can always be mapped to ERESTARTSYS */
0e501834 6027static int brightness_set(unsigned int value)
b21a15f6 6028{
0e501834 6029 int res;
b21a15f6 6030
77775838 6031 if (value > bright_maxlvl || value < 0)
b21a15f6
HMH		 6032 return -EINVAL;
6033
0e501834
HMH		 6034 vdbg_printk(TPACPI_DBG_BRGHT,
6035 "set backlight level to %d\n", value);
6036
7646ea88 6037 res = mutex_lock_killable(&brightness_mutex);
b21a15f6
HMH		 6038 if (res < 0)
6039 return res;
6040
0e501834
HMH		 6041 switch (brightness_mode) {
6042 case TPACPI_BRGHT_MODE_EC:
6043 case TPACPI_BRGHT_MODE_ECNVRAM:
6044 res = tpacpi_brightness_set_ec(value);
6045 break;
6046 case TPACPI_BRGHT_MODE_UCMS_STEP:
6047 res = tpacpi_brightness_set_ucmsstep(value);
6048 break;
6049 default:
6050 res = -ENXIO;
b21a15f6
HMH		 6051 }
6052
b21a15f6
HMH		 6053 mutex_unlock(&brightness_mutex);
6054 return res;
6055}
6056
6057/* sysfs backlight class ----------------------------------------------- */
6058
6059static int brightness_update_status(struct backlight_device *bd)
6060{
0e501834 6061 unsigned int level =
b21a15f6
HMH		 6062 (bd->props.fb_blank == FB_BLANK_UNBLANK &&
6063 bd->props.power == FB_BLANK_UNBLANK) ?
0e501834
HMH		 6064 bd->props.brightness : 0;
6065
6066 dbg_printk(TPACPI_DBG_BRGHT,
6067 "backlight: attempt to set level to %d\n",
6068 level);
6069
6070 /* it is the backlight class's job (caller) to handle
6071 * EINTR and other errors properly */
6072 return brightness_set(level);
b21a15f6
HMH		 6073}
6074
e11aecf1 6075static int brightness_get(struct backlight_device *bd)
a3f104c0 6076{
e11aecf1 6077 int status, res;
a3f104c0 6078
0e501834 6079 res = mutex_lock_killable(&brightness_mutex);
e11aecf1 6080 if (res < 0)
0e501834
HMH		 6081 return 0;
6082
6083 res = tpacpi_brightness_get_raw(&status);
6084
6085 mutex_unlock(&brightness_mutex);
6086
6087 if (res < 0)
6088 return 0;
e11e211a 6089
e11aecf1 6090 return status & TP_EC_BACKLIGHT_LVLMSK;
e11e211a
HMH		 6091}
6092
347a2686
HMH		 6093static void tpacpi_brightness_notify_change(void)
6094{
6095 backlight_force_update(ibm_backlight_device,
6096 BACKLIGHT_UPDATE_HOTKEY);
6097}
6098
acc2472e 6099static const struct backlight_ops ibm_backlight_data = {
35ff8b9f
HMH		 6100 .get_brightness = brightness_get,
6101 .update_status = brightness_update_status,
56b6aeb0 6102};
e11e211a 6103
b21a15f6 6104/* --------------------------------------------------------------------- */
e11e211a 6105
122f2672
HMH		 6106/*
6107 * Call _BCL method of video device. On some ThinkPads this will
6108 * switch the firmware to the ACPI brightness control mode.
6109 */
6110
77775838
HMH		 6111static int __init tpacpi_query_bcl_levels(acpi_handle handle)
6112{
6113 struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
6114 union acpi_object *obj;
6115 int rc;
6116
122f2672 6117 if (ACPI_SUCCESS(acpi_evaluate_object(handle, "_BCL", NULL, &buffer))) {
77775838
HMH		 6118 obj = (union acpi_object *)buffer.pointer;
6119 if (!obj || (obj->type != ACPI_TYPE_PACKAGE)) {
0978e012
JP		 6120 pr_err("Unknown _BCL data, please report this to %s\n",
6121 TPACPI_MAIL);
77775838
HMH		 6122 rc = 0;
6123 } else {
6124 rc = obj->package.count;
6125 }
6126 } else {
6127 return 0;
6128 }
6129
6130 kfree(buffer.pointer);
6131 return rc;
6132}
6133
77775838
HMH		 6134
6135/*
6136 * Returns 0 (no ACPI _BCL or _BCL invalid), or size of brightness map
6137 */
6138static unsigned int __init tpacpi_check_std_acpi_brightness_support(void)
6139{
122f2672 6140 acpi_handle video_device;
77775838 6141 int bcl_levels = 0;
77775838 6142
122f2672
HMH		 6143 tpacpi_acpi_handle_locate("video", ACPI_VIDEO_HID, &video_device);
6144 if (video_device)
6145 bcl_levels = tpacpi_query_bcl_levels(video_device);
77775838 6146
122f2672 6147 tp_features.bright_acpimode = (bcl_levels > 0);
77775838 6148
122f2672 6149 return (bcl_levels > 2) ? (bcl_levels - 2) : 0;
77775838
HMH		 6150}
6151
59fe4fe3
HMH		 6152/*
6153 * These are only useful for models that have only one possibility
6154 * of GPU. If the BIOS model handles both ATI and Intel, don't use
6155 * these quirks.
6156 */
6157#define TPACPI_BRGHT_Q_NOEC 0x0001 /* Must NOT use EC HBRV */
6158#define TPACPI_BRGHT_Q_EC 0x0002 /* Should or must use EC HBRV */
6159#define TPACPI_BRGHT_Q_ASK 0x8000 /* Ask for user report */
6160
6161static const struct tpacpi_quirk brightness_quirk_table[] __initconst = {
6162 /* Models with ATI GPUs known to require ECNVRAM mode */
6163 TPACPI_Q_IBM('1', 'Y', TPACPI_BRGHT_Q_EC), /* T43/p ATI */
6164
6da25bf5 6165 /* Models with ATI GPUs that can use ECNVRAM */
7d1894d8 6166 TPACPI_Q_IBM('1', 'R', TPACPI_BRGHT_Q_EC), /* R50,51 T40-42 */
59fe4fe3 6167 TPACPI_Q_IBM('1', 'Q', TPACPI_BRGHT_Q_ASK|TPACPI_BRGHT_Q_EC),
7d1894d8 6168 TPACPI_Q_IBM('7', '6', TPACPI_BRGHT_Q_EC), /* R52 */
59fe4fe3
HMH		 6169 TPACPI_Q_IBM('7', '8', TPACPI_BRGHT_Q_ASK|TPACPI_BRGHT_Q_EC),
6170
6da25bf5 6171 /* Models with Intel Extreme Graphics 2 */
7d1894d8 6172 TPACPI_Q_IBM('1', 'U', TPACPI_BRGHT_Q_NOEC), /* X40 */
a9f8eacc
HMH		 6173 TPACPI_Q_IBM('1', 'V', TPACPI_BRGHT_Q_ASK|TPACPI_BRGHT_Q_EC),
6174 TPACPI_Q_IBM('1', 'W', TPACPI_BRGHT_Q_ASK|TPACPI_BRGHT_Q_EC),
59fe4fe3
HMH		 6175
6176 /* Models with Intel GMA900 */
6177 TPACPI_Q_IBM('7', '0', TPACPI_BRGHT_Q_NOEC), /* T43, R52 */
6178 TPACPI_Q_IBM('7', '4', TPACPI_BRGHT_Q_NOEC), /* X41 */
6179 TPACPI_Q_IBM('7', '5', TPACPI_BRGHT_Q_NOEC), /* X41 Tablet */
6180};
6181
77775838
HMH		 6182/*
6183 * Returns < 0 for error, otherwise sets tp_features.bright_*
6184 * and bright_maxlvl.
6185 */
6186static void __init tpacpi_detect_brightness_capabilities(void)
6187{
6188 unsigned int b;
6189
6190 vdbg_printk(TPACPI_DBG_INIT,
6191 "detecting firmware brightness interface capabilities\n");
6192
6193 /* we could run a quirks check here (same table used by
6194 * brightness_init) if needed */
6195
6196 /*
6197 * We always attempt to detect acpi support, so as to switch
6198 * Lenovo Vista BIOS to ACPI brightness mode even if we are not
6199 * going to publish a backlight interface
6200 */
6201 b = tpacpi_check_std_acpi_brightness_support();
6202 switch (b) {
6203 case 16:
6204 bright_maxlvl = 15;
0978e012 6205 pr_info("detected a 16-level brightness capable ThinkPad\n");
77775838
HMH		 6206 break;
6207 case 8:
6208 case 0:
6209 bright_maxlvl = 7;
0978e012 6210 pr_info("detected a 8-level brightness capable ThinkPad\n");
77775838
HMH		 6211 break;
6212 default:
0978e012 6213 pr_err("Unsupported brightness interface, "
77775838
HMH		 6214 "please contact %s\n", TPACPI_MAIL);
6215 tp_features.bright_unkfw = 1;
6216 bright_maxlvl = b - 1;
6217 }
6218}
6219
a5763f22 6220static int __init brightness_init(struct ibm_init_struct *iibm)
56b6aeb0 6221{
a19a6ee6 6222 struct backlight_properties props;
56b6aeb0 6223 int b;
59fe4fe3 6224 unsigned long quirks;
56b6aeb0 6225
fe08bc4b
HMH		 6226 vdbg_printk(TPACPI_DBG_INIT, "initializing brightness subdriver\n");
6227
f432255e
HMH		 6228 mutex_init(&brightness_mutex);
6229
59fe4fe3
HMH		 6230 quirks = tpacpi_check_quirks(brightness_quirk_table,
6231 ARRAY_SIZE(brightness_quirk_table));
6232
77775838
HMH		 6233 /* tpacpi_detect_brightness_capabilities() must have run already */
6234
6235 /* if it is unknown, we don't handle it: it wouldn't be safe */
6236 if (tp_features.bright_unkfw)
6237 return 1;
2dba1b5d 6238
b5972796 6239 if (!brightness_enable) {
0e501834 6240 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_BRGHT,
b5972796
HMH		 6241 "brightness support disabled by "
6242 "module parameter\n");
6243 return 1;
6244 }
6245
217f0963
HMH		 6246 if (acpi_video_backlight_support()) {
6247 if (brightness_enable > 1) {
0978e012
JP		 6248 pr_info("Standard ACPI backlight interface "
6249 "available, not loading native one\n");
217f0963
HMH		 6250 return 1;
6251 } else if (brightness_enable == 1) {
0978e012 6252 pr_warn("Cannot enable backlight brightness support, "
217f0963 6253 "ACPI is already handling it. Refer to the "
0978e012 6254 "acpi_backlight kernel parameter.\n");
217f0963
HMH		 6255 return 1;
6256 }
6257 } else if (tp_features.bright_acpimode && brightness_enable > 1) {
0978e012
JP		 6258 pr_notice("Standard ACPI backlight interface not "
6259 "available, thinkpad_acpi native "
6260 "brightness control enabled\n");
217f0963
HMH		 6261 }
6262
0e501834
HMH		 6263 /*
6264 * Check for module parameter bogosity, note that we
6265 * init brightness_mode to TPACPI_BRGHT_MODE_MAX in order to be
6266 * able to detect "unspecified"
6267 */
6268 if (brightness_mode > TPACPI_BRGHT_MODE_MAX)
6269 return -EINVAL;
24d3b774 6270
0e501834
HMH		 6271 /* TPACPI_BRGHT_MODE_AUTO not implemented yet, just use default */
6272 if (brightness_mode == TPACPI_BRGHT_MODE_AUTO ||
6273 brightness_mode == TPACPI_BRGHT_MODE_MAX) {
59fe4fe3
HMH		 6274 if (quirks & TPACPI_BRGHT_Q_EC)
6275 brightness_mode = TPACPI_BRGHT_MODE_ECNVRAM;
6276 else
0e501834 6277 brightness_mode = TPACPI_BRGHT_MODE_UCMS_STEP;
24d3b774 6278
0e501834 6279 dbg_printk(TPACPI_DBG_BRGHT,
59fe4fe3 6280 "driver auto-selected brightness_mode=%d\n",
0e501834
HMH		 6281 brightness_mode);
6282 }
24d3b774 6283
d7880f10 6284 /* Safety */
e28393c0 6285 if (!tpacpi_is_ibm() &&
d7880f10
HMH		 6286 (brightness_mode == TPACPI_BRGHT_MODE_ECNVRAM ||
6287 brightness_mode == TPACPI_BRGHT_MODE_EC))
6288 return -EINVAL;
6289
0e501834 6290 if (tpacpi_brightness_get_raw(&b) < 0)
24d3b774 6291 return 1;
56b6aeb0 6292
a19a6ee6 6293 memset(&props, 0, sizeof(struct backlight_properties));
bb7ca747 6294 props.type = BACKLIGHT_PLATFORM;
77775838
HMH		 6295 props.max_brightness = bright_maxlvl;
6296 props.brightness = b & TP_EC_BACKLIGHT_LVLMSK;
a19a6ee6
MG		 6297 ibm_backlight_device = backlight_device_register(TPACPI_BACKLIGHT_DEV_NAME,
6298 NULL, NULL,
6299 &ibm_backlight_data,
6300 &props);
56b6aeb0 6301 if (IS_ERR(ibm_backlight_device)) {
435c47e2
HMH		 6302 int rc = PTR_ERR(ibm_backlight_device);
6303 ibm_backlight_device = NULL;
0978e012 6304 pr_err("Could not register backlight device\n");
435c47e2 6305 return rc;
56b6aeb0 6306 }
0e501834
HMH		 6307 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_BRGHT,
6308 "brightness is supported\n");
56b6aeb0 6309
59fe4fe3 6310 if (quirks & TPACPI_BRGHT_Q_ASK) {
0978e012
JP		 6311 pr_notice("brightness: will use unverified default: "
6312 "brightness_mode=%d\n", brightness_mode);
6313 pr_notice("brightness: please report to %s whether it works well "
6314 "or not on your ThinkPad\n", TPACPI_MAIL);
59fe4fe3
HMH		 6315 }
6316
7d9745cf
HMH		 6317 /* Added by mistake in early 2007. Probably useless, but it could
6318 * be working around some unknown firmware problem where the value
6319 * read at startup doesn't match the real hardware state... so leave
6320 * it in place just in case */
56b6aeb0
HMH		 6321 backlight_update_status(ibm_backlight_device);
6322
347a2686
HMH		 6323 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_BRGHT,
6324 "brightness: registering brightness hotkeys "
6325 "as change notification\n");
6326 tpacpi_hotkey_driver_mask_set(hotkey_driver_mask
6327 | TP_ACPI_HKEY_BRGHTUP_MASK
3098064d 6328 | TP_ACPI_HKEY_BRGHTDWN_MASK);
56b6aeb0
HMH		 6329 return 0;
6330}
6331
0e501834
HMH		 6332static void brightness_suspend(pm_message_t state)
6333{
6334 tpacpi_brightness_checkpoint_nvram();
6335}
6336
6337static void brightness_shutdown(void)
6338{
6339 tpacpi_brightness_checkpoint_nvram();
6340}
6341
56b6aeb0
HMH		 6342static void brightness_exit(void)
6343{
6344 if (ibm_backlight_device) {
0e501834 6345 vdbg_printk(TPACPI_DBG_EXIT | TPACPI_DBG_BRGHT,
fe08bc4b 6346 "calling backlight_device_unregister()\n");
56b6aeb0 6347 backlight_device_unregister(ibm_backlight_device);
56b6aeb0 6348 }
0e501834
HMH		 6349
6350 tpacpi_brightness_checkpoint_nvram();
56b6aeb0
HMH		 6351}
6352
887965e6 6353static int brightness_read(struct seq_file *m)
56b6aeb0 6354{
56b6aeb0
HMH		 6355 int level;
6356
35ff8b9f
HMH		 6357 level = brightness_get(NULL);
6358 if (level < 0) {
887965e6 6359 seq_printf(m, "level:\t\tunreadable\n");
56b6aeb0 6360 } else {
887965e6
AD		 6361 seq_printf(m, "level:\t\t%d\n", level);
6362 seq_printf(m, "commands:\tup, down\n");
77775838
HMH		 6363 seq_printf(m, "commands:\tlevel <level> (<level> is 0-%d)\n",
6364 bright_maxlvl);
56b6aeb0
HMH		 6365 }
6366
887965e6 6367 return 0;
56b6aeb0
HMH		 6368}
6369
8acb0250
HM		 6370static int brightness_write(char *buf)
6371{
6372 int level;
4273af8d 6373 int rc;
1da177e4 6374 char *cmd;
1da177e4 6375
4273af8d
HMH		 6376 level = brightness_get(NULL);
6377 if (level < 0)
6378 return level;
78f81cc4 6379
4273af8d 6380 while ((cmd = next_cmd(&buf))) {
78f81cc4 6381 if (strlencmp(cmd, "up") == 0) {
77775838 6382 if (level < bright_maxlvl)
4273af8d 6383 level++;
78f81cc4 6384 } else if (strlencmp(cmd, "down") == 0) {
4273af8d
HMH		 6385 if (level > 0)
6386 level--;
6387 } else if (sscanf(cmd, "level %d", &level) == 1 &&
77775838 6388 level >= 0 && level <= bright_maxlvl) {
4273af8d 6389 /* new level set */
78f81cc4
BD		 6390 } else
6391 return -EINVAL;
78f81cc4
BD		 6392 }
6393
0e501834
HMH		 6394 tpacpi_disclose_usertask("procfs brightness",
6395 "set level to %d\n", level);
6396
4273af8d
HMH		 6397 /*
6398 * Now we know what the final level should be, so we try to set it.
6399 * Doing it this way makes the syscall restartable in case of EINTR
6400 */
6401 rc = brightness_set(level);
347a2686
HMH		 6402 if (!rc && ibm_backlight_device)
6403 backlight_force_update(ibm_backlight_device,
6404 BACKLIGHT_UPDATE_SYSFS);
80a8d122 6405 return (rc == -EINTR)? -ERESTARTSYS : rc;
78f81cc4
BD		 6406}
6407
a5763f22
HMH		 6408static struct ibm_struct brightness_driver_data = {
6409 .name = "brightness",
6410 .read = brightness_read,
6411 .write = brightness_write,
6412 .exit = brightness_exit,
0e501834
HMH		 6413 .suspend = brightness_suspend,
6414 .shutdown = brightness_shutdown,
a5763f22
HMH		 6415};
6416
56b6aeb0
HMH		 6417/*************************************************************************
6418 * Volume subdriver
6419 */
fb87a811 6420
329e4e18
HMH		 6421/*
6422 * IBM ThinkPads have a simple volume controller with MUTE gating.
6423 * Very early Lenovo ThinkPads follow the IBM ThinkPad spec.
6424 *
6425 * Since the *61 series (and probably also the later *60 series), Lenovo
6426 * ThinkPads only implement the MUTE gate.
6427 *
6428 * EC register 0x30
6429 * Bit 6: MUTE (1 mutes sound)
6430 * Bit 3-0: Volume
6431 * Other bits should be zero as far as we know.
6432 *
6433 * This is also stored in CMOS NVRAM, byte 0x60, bit 6 (MUTE), and
6434 * bits 3-0 (volume). Other bits in NVRAM may have other functions,
6435 * such as bit 7 which is used to detect repeated presses of MUTE,
6436 * and we leave them unchanged.
6437 */
6438
ff850c33
HMH		 6439#ifdef CONFIG_THINKPAD_ACPI_ALSA_SUPPORT
6440
0d204c34
HMH		 6441#define TPACPI_ALSA_DRVNAME "ThinkPad EC"
6442#define TPACPI_ALSA_SHRTNAME "ThinkPad Console Audio Control"
6443#define TPACPI_ALSA_MIXERNAME TPACPI_ALSA_SHRTNAME
6444
ead510ce 6445static int alsa_index = ~((1 << (SNDRV_CARDS - 3)) - 1); /* last three slots */
0d204c34
HMH		 6446static char *alsa_id = "ThinkPadEC";
6447static int alsa_enable = SNDRV_DEFAULT_ENABLE1;
6448
6449struct tpacpi_alsa_data {
6450 struct snd_card *card;
6451 struct snd_ctl_elem_id *ctl_mute_id;
6452 struct snd_ctl_elem_id *ctl_vol_id;
6453};
6454
6455static struct snd_card *alsa_card;
6456
329e4e18
HMH		 6457enum {
6458 TP_EC_AUDIO = 0x30,
6459
6460 /* TP_EC_AUDIO bits */
6461 TP_EC_AUDIO_MUTESW = 6,
6462
6463 /* TP_EC_AUDIO bitmasks */
6464 TP_EC_AUDIO_LVL_MSK = 0x0F,
6465 TP_EC_AUDIO_MUTESW_MSK = (1 << TP_EC_AUDIO_MUTESW),
6466
6467 /* Maximum volume */
6468 TP_EC_VOLUME_MAX = 14,
6469};
6470
6471enum tpacpi_volume_access_mode {
6472 TPACPI_VOL_MODE_AUTO = 0, /* Not implemented yet */
6473 TPACPI_VOL_MODE_EC, /* Pure EC control */
6474 TPACPI_VOL_MODE_UCMS_STEP, /* UCMS step-based control: N/A */
6475 TPACPI_VOL_MODE_ECNVRAM, /* EC control w/ NVRAM store */
6476 TPACPI_VOL_MODE_MAX
6477};
6478
a112ceee
HMH		 6479enum tpacpi_volume_capabilities {
6480 TPACPI_VOL_CAP_AUTO = 0, /* Use white/blacklist */
6481 TPACPI_VOL_CAP_VOLMUTE, /* Output vol and mute */
6482 TPACPI_VOL_CAP_MUTEONLY, /* Output mute only */
6483 TPACPI_VOL_CAP_MAX
6484};
6485
329e4e18
HMH		 6486static enum tpacpi_volume_access_mode volume_mode =
6487 TPACPI_VOL_MODE_MAX;
6488
a112ceee 6489static enum tpacpi_volume_capabilities volume_capabilities;
c7ac6291 6490static int volume_control_allowed;
f74a27d4 6491
329e4e18
HMH		 6492/*
6493 * Used to syncronize writers to TP_EC_AUDIO and
6494 * TP_NVRAM_ADDR_MIXER, as we need to do read-modify-write
6495 */
6496static struct mutex volume_mutex;
6497
6498static void tpacpi_volume_checkpoint_nvram(void)
78f81cc4 6499{
329e4e18
HMH		 6500 u8 lec = 0;
6501 u8 b_nvram;
a112ceee 6502 u8 ec_mask;
329e4e18
HMH		 6503
6504 if (volume_mode != TPACPI_VOL_MODE_ECNVRAM)
6505 return;
c7ac6291
HMH		 6506 if (!volume_control_allowed)
6507 return;
329e4e18
HMH		 6508
6509 vdbg_printk(TPACPI_DBG_MIXER,
6510 "trying to checkpoint mixer state to NVRAM...\n");
78f81cc4 6511
a112ceee
HMH		 6512 if (tp_features.mixer_no_level_control)
6513 ec_mask = TP_EC_AUDIO_MUTESW_MSK;
6514 else
6515 ec_mask = TP_EC_AUDIO_MUTESW_MSK | TP_EC_AUDIO_LVL_MSK;
6516
329e4e18
HMH		 6517 if (mutex_lock_killable(&volume_mutex) < 0)
6518 return;
6519
6520 if (unlikely(!acpi_ec_read(TP_EC_AUDIO, &lec)))
6521 goto unlock;
6522 lec &= ec_mask;
6523 b_nvram = nvram_read_byte(TP_NVRAM_ADDR_MIXER);
6524
6525 if (lec != (b_nvram & ec_mask)) {
6526 /* NVRAM needs update */
6527 b_nvram &= ~ec_mask;
6528 b_nvram |= lec;
6529 nvram_write_byte(b_nvram, TP_NVRAM_ADDR_MIXER);
6530 dbg_printk(TPACPI_DBG_MIXER,
6531 "updated NVRAM mixer status to 0x%02x (0x%02x)\n",
6532 (unsigned int) lec, (unsigned int) b_nvram);
78f81cc4 6533 } else {
329e4e18
HMH		 6534 vdbg_printk(TPACPI_DBG_MIXER,
6535 "NVRAM mixer status already is 0x%02x (0x%02x)\n",
6536 (unsigned int) lec, (unsigned int) b_nvram);
78f81cc4
BD		 6537 }
6538
329e4e18
HMH		 6539unlock:
6540 mutex_unlock(&volume_mutex);
78f81cc4
BD		 6541}
6542
329e4e18 6543static int volume_get_status_ec(u8 *status)
78f81cc4 6544{
329e4e18 6545 u8 s;
78f81cc4 6546
329e4e18
HMH		 6547 if (!acpi_ec_read(TP_EC_AUDIO, &s))
6548 return -EIO;
78f81cc4 6549
329e4e18 6550 *status = s;
1da177e4 6551
329e4e18 6552 dbg_printk(TPACPI_DBG_MIXER, "status 0x%02x\n", s);
35ff8b9f 6553
329e4e18
HMH		 6554 return 0;
6555}
78f81cc4 6556
329e4e18
HMH		 6557static int volume_get_status(u8 *status)
6558{
6559 return volume_get_status_ec(status);
6560}
78f81cc4 6561
329e4e18
HMH		 6562static int volume_set_status_ec(const u8 status)
6563{
6564 if (!acpi_ec_write(TP_EC_AUDIO, status))
6565 return -EIO;
78f81cc4 6566
329e4e18
HMH		 6567 dbg_printk(TPACPI_DBG_MIXER, "set EC mixer to 0x%02x\n", status);
6568
6569 return 0;
6570}
6571
6572static int volume_set_status(const u8 status)
6573{
6574 return volume_set_status_ec(status);
6575}
6576
88cc8377
HMH		 6577/* returns < 0 on error, 0 on no change, 1 on change */
6578static int __volume_set_mute_ec(const bool mute)
329e4e18
HMH		 6579{
6580 int rc;
6581 u8 s, n;
6582
6583 if (mutex_lock_killable(&volume_mutex) < 0)
6584 return -EINTR;
6585
6586 rc = volume_get_status_ec(&s);
6587 if (rc)
6588 goto unlock;
6589
6590 n = (mute) ? s | TP_EC_AUDIO_MUTESW_MSK :
6591 s & ~TP_EC_AUDIO_MUTESW_MSK;
6592
88cc8377 6593 if (n != s) {
329e4e18 6594 rc = volume_set_status_ec(n);
88cc8377
HMH		 6595 if (!rc)
6596 rc = 1;
6597 }
329e4e18
HMH		 6598
6599unlock:
6600 mutex_unlock(&volume_mutex);
6601 return rc;
6602}
6603
88cc8377
HMH		 6604static int volume_alsa_set_mute(const bool mute)
6605{
6606 dbg_printk(TPACPI_DBG_MIXER, "ALSA: trying to %smute\n",
6607 (mute) ? "" : "un");
6608 return __volume_set_mute_ec(mute);
6609}
6610
329e4e18
HMH		 6611static int volume_set_mute(const bool mute)
6612{
88cc8377
HMH		 6613 int rc;
6614
329e4e18
HMH		 6615 dbg_printk(TPACPI_DBG_MIXER, "trying to %smute\n",
6616 (mute) ? "" : "un");
88cc8377
HMH		 6617
6618 rc = __volume_set_mute_ec(mute);
6619 return (rc < 0) ? rc : 0;
329e4e18
HMH		 6620}
6621
88cc8377
HMH		 6622/* returns < 0 on error, 0 on no change, 1 on change */
6623static int __volume_set_volume_ec(const u8 vol)
329e4e18
HMH		 6624{
6625 int rc;
6626 u8 s, n;
6627
6628 if (vol > TP_EC_VOLUME_MAX)
6629 return -EINVAL;
6630
6631 if (mutex_lock_killable(&volume_mutex) < 0)
6632 return -EINTR;
6633
6634 rc = volume_get_status_ec(&s);
6635 if (rc)
6636 goto unlock;
6637
6638 n = (s & ~TP_EC_AUDIO_LVL_MSK) | vol;
6639
88cc8377 6640 if (n != s) {
329e4e18 6641 rc = volume_set_status_ec(n);
88cc8377
HMH		 6642 if (!rc)
6643 rc = 1;
6644 }
329e4e18
HMH		 6645
6646unlock:
6647 mutex_unlock(&volume_mutex);
6648 return rc;
6649}
6650
88cc8377 6651static int volume_alsa_set_volume(const u8 vol)
329e4e18
HMH		 6652{
6653 dbg_printk(TPACPI_DBG_MIXER,
88cc8377
HMH		 6654 "ALSA: trying to set volume level to %hu\n", vol);
6655 return __volume_set_volume_ec(vol);
329e4e18
HMH		 6656}
6657
0d204c34
HMH		 6658static void volume_alsa_notify_change(void)
6659{
6660 struct tpacpi_alsa_data *d;
6661
6662 if (alsa_card && alsa_card->private_data) {
6663 d = alsa_card->private_data;
6664 if (d->ctl_mute_id)
6665 snd_ctl_notify(alsa_card,
6666 SNDRV_CTL_EVENT_MASK_VALUE,
6667 d->ctl_mute_id);
6668 if (d->ctl_vol_id)
6669 snd_ctl_notify(alsa_card,
6670 SNDRV_CTL_EVENT_MASK_VALUE,
6671 d->ctl_vol_id);
6672 }
6673}
6674
6675static int volume_alsa_vol_info(struct snd_kcontrol *kcontrol,
6676 struct snd_ctl_elem_info *uinfo)
6677{
6678 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
6679 uinfo->count = 1;
6680 uinfo->value.integer.min = 0;
6681 uinfo->value.integer.max = TP_EC_VOLUME_MAX;
6682 return 0;
6683}
6684
6685static int volume_alsa_vol_get(struct snd_kcontrol *kcontrol,
6686 struct snd_ctl_elem_value *ucontrol)
6687{
6688 u8 s;
6689 int rc;
6690
6691 rc = volume_get_status(&s);
6692 if (rc < 0)
6693 return rc;
6694
6695 ucontrol->value.integer.value[0] = s & TP_EC_AUDIO_LVL_MSK;
6696 return 0;
6697}
6698
6699static int volume_alsa_vol_put(struct snd_kcontrol *kcontrol,
6700 struct snd_ctl_elem_value *ucontrol)
6701{
38e11cde
HMH		 6702 tpacpi_disclose_usertask("ALSA", "set volume to %ld\n",
6703 ucontrol->value.integer.value[0]);
88cc8377 6704 return volume_alsa_set_volume(ucontrol->value.integer.value[0]);
0d204c34
HMH		 6705}
6706
6707#define volume_alsa_mute_info snd_ctl_boolean_mono_info
6708
6709static int volume_alsa_mute_get(struct snd_kcontrol *kcontrol,
6710 struct snd_ctl_elem_value *ucontrol)
6711{
6712 u8 s;
6713 int rc;
6714
6715 rc = volume_get_status(&s);
6716 if (rc < 0)
6717 return rc;
6718
6719 ucontrol->value.integer.value[0] =
6720 (s & TP_EC_AUDIO_MUTESW_MSK) ? 0 : 1;
6721 return 0;
6722}
6723
6724static int volume_alsa_mute_put(struct snd_kcontrol *kcontrol,
6725 struct snd_ctl_elem_value *ucontrol)
6726{
38e11cde
HMH		 6727 tpacpi_disclose_usertask("ALSA", "%smute\n",
6728 ucontrol->value.integer.value[0] ?
6729 "un" : "");
88cc8377 6730 return volume_alsa_set_mute(!ucontrol->value.integer.value[0]);
0d204c34
HMH		 6731}
6732
6733static struct snd_kcontrol_new volume_alsa_control_vol __devinitdata = {
6734 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
6735 .name = "Console Playback Volume",
6736 .index = 0,
6737 .access = SNDRV_CTL_ELEM_ACCESS_READ,
6738 .info = volume_alsa_vol_info,
6739 .get = volume_alsa_vol_get,
6740};
6741
6742static struct snd_kcontrol_new volume_alsa_control_mute __devinitdata = {
6743 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
6744 .name = "Console Playback Switch",
6745 .index = 0,
6746 .access = SNDRV_CTL_ELEM_ACCESS_READ,
6747 .info = volume_alsa_mute_info,
6748 .get = volume_alsa_mute_get,
6749};
6750
329e4e18
HMH		 6751static void volume_suspend(pm_message_t state)
6752{
6753 tpacpi_volume_checkpoint_nvram();
6754}
6755
0d204c34
HMH		 6756static void volume_resume(void)
6757{
6758 volume_alsa_notify_change();
6759}
6760
329e4e18
HMH		 6761static void volume_shutdown(void)
6762{
6763 tpacpi_volume_checkpoint_nvram();
6764}
6765
6766static void volume_exit(void)
6767{
0d204c34
HMH		 6768 if (alsa_card) {
6769 snd_card_free(alsa_card);
6770 alsa_card = NULL;
6771 }
6772
329e4e18
HMH		 6773 tpacpi_volume_checkpoint_nvram();
6774}
6775
0d204c34
HMH		 6776static int __init volume_create_alsa_mixer(void)
6777{
6778 struct snd_card *card;
6779 struct tpacpi_alsa_data *data;
6780 struct snd_kcontrol *ctl_vol;
6781 struct snd_kcontrol *ctl_mute;
6782 int rc;
6783
6784 rc = snd_card_create(alsa_index, alsa_id, THIS_MODULE,
6785 sizeof(struct tpacpi_alsa_data), &card);
74c75c18 6786 if (rc < 0 || !card) {
0978e012 6787 pr_err("Failed to create ALSA card structures: %d\n", rc);
74c75c18
HMH		 6788 return 1;
6789 }
0d204c34
HMH		 6790
6791 BUG_ON(!card->private_data);
6792 data = card->private_data;
6793 data->card = card;
6794
6795 strlcpy(card->driver, TPACPI_ALSA_DRVNAME,
6796 sizeof(card->driver));
6797 strlcpy(card->shortname, TPACPI_ALSA_SHRTNAME,
6798 sizeof(card->shortname));
6799 snprintf(card->mixername, sizeof(card->mixername), "ThinkPad EC %s",
6800 (thinkpad_id.ec_version_str) ?
6801 thinkpad_id.ec_version_str : "(unknown)");
6802 snprintf(card->longname, sizeof(card->longname),
6803 "%s at EC reg 0x%02x, fw %s", card->shortname, TP_EC_AUDIO,
6804 (thinkpad_id.ec_version_str) ?
6805 thinkpad_id.ec_version_str : "unknown");
6806
6807 if (volume_control_allowed) {
6808 volume_alsa_control_vol.put = volume_alsa_vol_put;
6809 volume_alsa_control_vol.access =
6810 SNDRV_CTL_ELEM_ACCESS_READWRITE;
6811
6812 volume_alsa_control_mute.put = volume_alsa_mute_put;
6813 volume_alsa_control_mute.access =
6814 SNDRV_CTL_ELEM_ACCESS_READWRITE;
6815 }
6816
6817 if (!tp_features.mixer_no_level_control) {
6818 ctl_vol = snd_ctl_new1(&volume_alsa_control_vol, NULL);
6819 rc = snd_ctl_add(card, ctl_vol);
6820 if (rc < 0) {
0978e012
JP		 6821 pr_err("Failed to create ALSA volume control: %d\n",
6822 rc);
74c75c18 6823 goto err_exit;
78f81cc4 6824 }
0d204c34
HMH		 6825 data->ctl_vol_id = &ctl_vol->id;
6826 }
78f81cc4 6827
0d204c34
HMH		 6828 ctl_mute = snd_ctl_new1(&volume_alsa_control_mute, NULL);
6829 rc = snd_ctl_add(card, ctl_mute);
6830 if (rc < 0) {
0978e012 6831 pr_err("Failed to create ALSA mute control: %d\n", rc);
74c75c18 6832 goto err_exit;
0d204c34
HMH		 6833 }
6834 data->ctl_mute_id = &ctl_mute->id;
35ff8b9f 6835
0d204c34
HMH		 6836 snd_card_set_dev(card, &tpacpi_pdev->dev);
6837 rc = snd_card_register(card);
0d204c34 6838 if (rc < 0) {
0978e012 6839 pr_err("Failed to register ALSA card: %d\n", rc);
74c75c18 6840 goto err_exit;
0d204c34
HMH		 6841 }
6842
6843 alsa_card = card;
74c75c18
HMH		 6844 return 0;
6845
6846err_exit:
6847 snd_card_free(card);
6848 return 1;
0d204c34
HMH		 6849}
6850
a112ceee
HMH		 6851#define TPACPI_VOL_Q_MUTEONLY 0x0001 /* Mute-only control available */
6852#define TPACPI_VOL_Q_LEVEL 0x0002 /* Volume control available */
6853
6854static const struct tpacpi_quirk volume_quirk_table[] __initconst = {
6855 /* Whitelist volume level on all IBM by default */
6856 { .vendor = PCI_VENDOR_ID_IBM,
6857 .bios = TPACPI_MATCH_ANY,
6858 .ec = TPACPI_MATCH_ANY,
6859 .quirks = TPACPI_VOL_Q_LEVEL },
6860
6861 /* Lenovo models with volume control (needs confirmation) */
6862 TPACPI_QEC_LNV('7', 'C', TPACPI_VOL_Q_LEVEL), /* R60/i */
6863 TPACPI_QEC_LNV('7', 'E', TPACPI_VOL_Q_LEVEL), /* R60e/i */
6864 TPACPI_QEC_LNV('7', '9', TPACPI_VOL_Q_LEVEL), /* T60/p */
6865 TPACPI_QEC_LNV('7', 'B', TPACPI_VOL_Q_LEVEL), /* X60/s */
6866 TPACPI_QEC_LNV('7', 'J', TPACPI_VOL_Q_LEVEL), /* X60t */
6867 TPACPI_QEC_LNV('7', '7', TPACPI_VOL_Q_LEVEL), /* Z60 */
6868 TPACPI_QEC_LNV('7', 'F', TPACPI_VOL_Q_LEVEL), /* Z61 */
6869
6870 /* Whitelist mute-only on all Lenovo by default */
6871 { .vendor = PCI_VENDOR_ID_LENOVO,
6872 .bios = TPACPI_MATCH_ANY,
6873 .ec = TPACPI_MATCH_ANY,
6874 .quirks = TPACPI_VOL_Q_MUTEONLY }
6875};
6876
329e4e18
HMH		 6877static int __init volume_init(struct ibm_init_struct *iibm)
6878{
a112ceee 6879 unsigned long quirks;
0d204c34 6880 int rc;
a112ceee 6881
329e4e18
HMH		 6882 vdbg_printk(TPACPI_DBG_INIT, "initializing volume subdriver\n");
6883
6884 mutex_init(&volume_mutex);
6885
6886 /*
6887 * Check for module parameter bogosity, note that we
6888 * init volume_mode to TPACPI_VOL_MODE_MAX in order to be
6889 * able to detect "unspecified"
6890 */
6891 if (volume_mode > TPACPI_VOL_MODE_MAX)
6892 return -EINVAL;
6893
6894 if (volume_mode == TPACPI_VOL_MODE_UCMS_STEP) {
0978e012
JP		 6895 pr_err("UCMS step volume mode not implemented, "
6896 "please contact %s\n", TPACPI_MAIL);
329e4e18
HMH		 6897 return 1;
6898 }
6899
a112ceee
HMH		 6900 if (volume_capabilities >= TPACPI_VOL_CAP_MAX)
6901 return -EINVAL;
6902
0d204c34
HMH		 6903 /*
6904 * The ALSA mixer is our primary interface.
6905 * When disabled, don't install the subdriver at all
6906 */
6907 if (!alsa_enable) {
6908 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER,
6909 "ALSA mixer disabled by parameter, "
6910 "not loading volume subdriver...\n");
6911 return 1;
6912 }
6913
a112ceee
HMH		 6914 quirks = tpacpi_check_quirks(volume_quirk_table,
6915 ARRAY_SIZE(volume_quirk_table));
6916
6917 switch (volume_capabilities) {
6918 case TPACPI_VOL_CAP_AUTO:
6919 if (quirks & TPACPI_VOL_Q_MUTEONLY)
6920 tp_features.mixer_no_level_control = 1;
6921 else if (quirks & TPACPI_VOL_Q_LEVEL)
6922 tp_features.mixer_no_level_control = 0;
6923 else
6924 return 1; /* no mixer */
6925 break;
6926 case TPACPI_VOL_CAP_VOLMUTE:
6927 tp_features.mixer_no_level_control = 0;
6928 break;
6929 case TPACPI_VOL_CAP_MUTEONLY:
6930 tp_features.mixer_no_level_control = 1;
6931 break;
6932 default:
6933 return 1;
6934 }
6935
6936 if (volume_capabilities != TPACPI_VOL_CAP_AUTO)
6937 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER,
6938 "using user-supplied volume_capabilities=%d\n",
6939 volume_capabilities);
6940
329e4e18
HMH		 6941 if (volume_mode == TPACPI_VOL_MODE_AUTO ||
6942 volume_mode == TPACPI_VOL_MODE_MAX) {
6943 volume_mode = TPACPI_VOL_MODE_ECNVRAM;
6944
6945 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER,
6946 "driver auto-selected volume_mode=%d\n",
6947 volume_mode);
6948 } else {
6949 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER,
6950 "using user-supplied volume_mode=%d\n",
6951 volume_mode);
6952 }
6953
6954 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER,
a112ceee
HMH		 6955 "mute is supported, volume control is %s\n",
6956 str_supported(!tp_features.mixer_no_level_control));
329e4e18 6957
0d204c34
HMH		 6958 rc = volume_create_alsa_mixer();
6959 if (rc) {
0978e012 6960 pr_err("Could not create the ALSA mixer interface\n");
0d204c34
HMH		 6961 return rc;
6962 }
6963
0978e012 6964 pr_info("Console audio control enabled, mode: %s\n",
c7ac6291
HMH		 6965 (volume_control_allowed) ?
6966 "override (read/write)" :
6967 "monitor (read only)");
6968
0d204c34
HMH		 6969 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER,
6970 "registering volume hotkeys as change notification\n");
6971 tpacpi_hotkey_driver_mask_set(hotkey_driver_mask
6972 | TP_ACPI_HKEY_VOLUP_MASK
6973 | TP_ACPI_HKEY_VOLDWN_MASK
6974 | TP_ACPI_HKEY_MUTE_MASK);
6975
329e4e18
HMH		 6976 return 0;
6977}
f74a27d4 6978
887965e6 6979static int volume_read(struct seq_file *m)
78f81cc4 6980{
329e4e18 6981 u8 status;
78f81cc4 6982
329e4e18 6983 if (volume_get_status(&status) < 0) {
887965e6 6984 seq_printf(m, "level:\t\tunreadable\n");
78f81cc4 6985 } else {
a112ceee 6986 if (tp_features.mixer_no_level_control)
887965e6 6987 seq_printf(m, "level:\t\tunsupported\n");
a112ceee 6988 else
887965e6 6989 seq_printf(m, "level:\t\t%d\n",
a112ceee
HMH		 6990 status & TP_EC_AUDIO_LVL_MSK);
6991
887965e6 6992 seq_printf(m, "mute:\t\t%s\n",
329e4e18 6993 onoff(status, TP_EC_AUDIO_MUTESW));
a112ceee 6994
c7ac6291 6995 if (volume_control_allowed) {
887965e6 6996 seq_printf(m, "commands:\tunmute, mute\n");
c7ac6291 6997 if (!tp_features.mixer_no_level_control) {
887965e6 6998 seq_printf(m,
c7ac6291 6999 "commands:\tup, down\n");
887965e6 7000 seq_printf(m,
c7ac6291
HMH		 7001 "commands:\tlevel <level>"
7002 " (<level> is 0-%d)\n",
7003 TP_EC_VOLUME_MAX);
7004 }
78f81cc4
BD		 7005 }
7006 }
7007
7008 return 0;
7009}
7010
78f81cc4
BD		 7011static int volume_write(char *buf)
7012{
329e4e18
HMH		 7013 u8 s;
7014 u8 new_level, new_mute;
7015 int l;
78f81cc4 7016 char *cmd;
329e4e18 7017 int rc;
78f81cc4 7018
c7ac6291
HMH		 7019 /*
7020 * We do allow volume control at driver startup, so that the
7021 * user can set initial state through the volume=... parameter hack.
7022 */
7023 if (!volume_control_allowed && tpacpi_lifecycle != TPACPI_LIFE_INIT) {
7024 if (unlikely(!tp_warned.volume_ctrl_forbidden)) {
7025 tp_warned.volume_ctrl_forbidden = 1;
0978e012
JP		 7026 pr_notice("Console audio control in monitor mode, "
7027 "changes are not allowed\n");
7028 pr_notice("Use the volume_control=1 module parameter "
7029 "to enable volume control\n");
c7ac6291
HMH		 7030 }
7031 return -EPERM;
7032 }
7033
329e4e18
HMH		 7034 rc = volume_get_status(&s);
7035 if (rc < 0)
7036 return rc;
78f81cc4 7037
329e4e18
HMH		 7038 new_level = s & TP_EC_AUDIO_LVL_MSK;
7039 new_mute = s & TP_EC_AUDIO_MUTESW_MSK;
7040
7041 while ((cmd = next_cmd(&buf))) {
a112ceee
HMH		 7042 if (!tp_features.mixer_no_level_control) {
7043 if (strlencmp(cmd, "up") == 0) {
7044 if (new_mute)
7045 new_mute = 0;
7046 else if (new_level < TP_EC_VOLUME_MAX)
7047 new_level++;
7048 continue;
7049 } else if (strlencmp(cmd, "down") == 0) {
7050 if (new_mute)
7051 new_mute = 0;
7052 else if (new_level > 0)
7053 new_level--;
7054 continue;
7055 } else if (sscanf(cmd, "level %u", &l) == 1 &&
7056 l >= 0 && l <= TP_EC_VOLUME_MAX) {
7057 new_level = l;
7058 continue;
7059 }
7060 }
7061 if (strlencmp(cmd, "mute") == 0)
329e4e18 7062 new_mute = TP_EC_AUDIO_MUTESW_MSK;
a112ceee
HMH		 7063 else if (strlencmp(cmd, "unmute") == 0)
7064 new_mute = 0;
7065 else
1da177e4 7066 return -EINVAL;
329e4e18 7067 }
1da177e4 7068
a112ceee
HMH		 7069 if (tp_features.mixer_no_level_control) {
7070 tpacpi_disclose_usertask("procfs volume", "%smute\n",
7071 new_mute ? "" : "un");
7072 rc = volume_set_mute(!!new_mute);
7073 } else {
7074 tpacpi_disclose_usertask("procfs volume",
7075 "%smute and set level to %d\n",
7076 new_mute ? "" : "un", new_level);
7077 rc = volume_set_status(new_mute | new_level);
7078 }
0d204c34 7079 volume_alsa_notify_change();
78f81cc4 7080
329e4e18 7081 return (rc == -EINTR) ? -ERESTARTSYS : rc;
78f81cc4
BD		 7082}
7083
a5763f22
HMH		 7084static struct ibm_struct volume_driver_data = {
7085 .name = "volume",
7086 .read = volume_read,
7087 .write = volume_write,
329e4e18
HMH		 7088 .exit = volume_exit,
7089 .suspend = volume_suspend,
0d204c34 7090 .resume = volume_resume,
329e4e18 7091 .shutdown = volume_shutdown,
a5763f22 7092};
56b6aeb0 7093
ff850c33
HMH		 7094#else /* !CONFIG_THINKPAD_ACPI_ALSA_SUPPORT */
7095
7096#define alsa_card NULL
7097
7098static void inline volume_alsa_notify_change(void)
7099{
7100}
7101
7102static int __init volume_init(struct ibm_init_struct *iibm)
7103{
0978e012 7104 pr_info("volume: disabled as there is no ALSA support in this kernel\n");
ff850c33
HMH		 7105
7106 return 1;
7107}
7108
7109static struct ibm_struct volume_driver_data = {
7110 .name = "volume",
7111};
7112
7113#endif /* CONFIG_THINKPAD_ACPI_ALSA_SUPPORT */
7114
56b6aeb0
HMH		 7115/*************************************************************************
7116 * Fan subdriver
7117 */
7118
7119/*
7120 * FAN ACCESS MODES
7121 *
efa27145 7122 * TPACPI_FAN_RD_ACPI_GFAN:
56b6aeb0
HMH		 7123 * ACPI GFAN method: returns fan level
7124 *
efa27145 7125 * see TPACPI_FAN_WR_ACPI_SFAN
f51d1a39 7126 * EC 0x2f (HFSP) not available if GFAN exists
56b6aeb0 7127 *
efa27145 7128 * TPACPI_FAN_WR_ACPI_SFAN:
56b6aeb0
HMH		 7129 * ACPI SFAN method: sets fan level, 0 (stop) to 7 (max)
7130 *
f51d1a39
HMH		 7131 * EC 0x2f (HFSP) might be available *for reading*, but do not use
7132 * it for writing.
56b6aeb0 7133 *
efa27145 7134 * TPACPI_FAN_WR_TPEC:
f51d1a39
HMH		 7135 * ThinkPad EC register 0x2f (HFSP): fan control loop mode
7136 * Supported on almost all ThinkPads
56b6aeb0
HMH		 7137 *
7138 * Fan speed changes of any sort (including those caused by the
7139 * disengaged mode) are usually done slowly by the firmware as the
9ddc5b6f 7140 * maximum amount of fan duty cycle change per second seems to be
56b6aeb0
HMH		 7141 * limited.
7142 *
7143 * Reading is not available if GFAN exists.
7144 * Writing is not available if SFAN exists.
7145 *
7146 * Bits
7147 * 7 automatic mode engaged;
7148 * (default operation mode of the ThinkPad)
7149 * fan level is ignored in this mode.
f51d1a39 7150 * 6 full speed mode (takes precedence over bit 7);
56b6aeb0 7151 * not available on all thinkpads. May disable
f51d1a39
HMH		 7152 * the tachometer while the fan controller ramps up
7153 * the speed (which can take up to a few *minutes*).
7154 * Speeds up fan to 100% duty-cycle, which is far above
7155 * the standard RPM levels. It is not impossible that
7156 * it could cause hardware damage.
56b6aeb0
HMH		 7157 * 5-3 unused in some models. Extra bits for fan level
7158 * in others, but still useless as all values above
7159 * 7 map to the same speed as level 7 in these models.
7160 * 2-0 fan level (0..7 usually)
7161 * 0x00 = stop
7162 * 0x07 = max (set when temperatures critical)
7163 * Some ThinkPads may have other levels, see
efa27145 7164 * TPACPI_FAN_WR_ACPI_FANS (X31/X40/X41)
56b6aeb0
HMH		 7165 *
7166 * FIRMWARE BUG: on some models, EC 0x2f might not be initialized at
b595076a 7167 * boot. Apparently the EC does not initialize it, so unless ACPI DSDT
56b6aeb0
HMH		 7168 * does so, its initial value is meaningless (0x07).
7169 *
7170 * For firmware bugs, refer to:
7171 * http://thinkwiki.org/wiki/Embedded_Controller_Firmware#Firmware_Issues
7172 *
7173 * ----
7174 *
7175 * ThinkPad EC register 0x84 (LSB), 0x85 (MSB):
7176 * Main fan tachometer reading (in RPM)
7177 *
7178 * This register is present on all ThinkPads with a new-style EC, and
7179 * it is known not to be present on the A21m/e, and T22, as there is
7180 * something else in offset 0x84 according to the ACPI DSDT. Other
7181 * ThinkPads from this same time period (and earlier) probably lack the
7182 * tachometer as well.
7183 *
877d0310 7184 * Unfortunately a lot of ThinkPads with new-style ECs but whose firmware
56b6aeb0
HMH		 7185 * was never fixed by IBM to report the EC firmware version string
7186 * probably support the tachometer (like the early X models), so
7187 * detecting it is quite hard. We need more data to know for sure.
7188 *
7189 * FIRMWARE BUG: always read 0x84 first, otherwise incorrect readings
7190 * might result.
7191 *
f51d1a39
HMH		 7192 * FIRMWARE BUG: may go stale while the EC is switching to full speed
7193 * mode.
56b6aeb0
HMH		 7194 *
7195 * For firmware bugs, refer to:
7196 * http://thinkwiki.org/wiki/Embedded_Controller_Firmware#Firmware_Issues
7197 *
d7377247
HMH		 7198 * ----
7199 *
7200 * ThinkPad EC register 0x31 bit 0 (only on select models)
7201 *
7202 * When bit 0 of EC register 0x31 is zero, the tachometer registers
7203 * show the speed of the main fan. When bit 0 of EC register 0x31
7204 * is one, the tachometer registers show the speed of the auxiliary
7205 * fan.
7206 *
7207 * Fan control seems to affect both fans, regardless of the state
7208 * of this bit.
7209 *
7210 * So far, only the firmware for the X60/X61 non-tablet versions
7211 * seem to support this (firmware TP-7M).
7212 *
efa27145 7213 * TPACPI_FAN_WR_ACPI_FANS:
56b6aeb0
HMH		 7214 * ThinkPad X31, X40, X41. Not available in the X60.
7215 *
7216 * FANS ACPI handle: takes three arguments: low speed, medium speed,
7217 * high speed. ACPI DSDT seems to map these three speeds to levels
7218 * as follows: STOP LOW LOW MED MED HIGH HIGH HIGH HIGH
7219 * (this map is stored on FAN0..FAN8 as "0,1,1,2,2,3,3,3,3")
7220 *
7221 * The speeds are stored on handles
7222 * (FANA:FAN9), (FANC:FANB), (FANE:FAND).
7223 *
af901ca1 7224 * There are three default speed sets, accessible as handles:
56b6aeb0
HMH		 7225 * FS1L,FS1M,FS1H; FS2L,FS2M,FS2H; FS3L,FS3M,FS3H
7226 *
7227 * ACPI DSDT switches which set is in use depending on various
7228 * factors.
7229 *
efa27145 7230 * TPACPI_FAN_WR_TPEC is also available and should be used to
56b6aeb0
HMH		 7231 * command the fan. The X31/X40/X41 seems to have 8 fan levels,
7232 * but the ACPI tables just mention level 7.
7233 */
7234
f74a27d4
HMH		 7235enum { /* Fan control constants */
7236 fan_status_offset = 0x2f, /* EC register 0x2f */
7237 fan_rpm_offset = 0x84, /* EC register 0x84: LSB, 0x85 MSB (RPM)
7238 * 0x84 must be read before 0x85 */
d7377247
HMH		 7239 fan_select_offset = 0x31, /* EC register 0x31 (Firmware 7M)
7240 bit 0 selects which fan is active */
f74a27d4
HMH		 7241
7242 TP_EC_FAN_FULLSPEED = 0x40, /* EC fan mode: full speed */
7243 TP_EC_FAN_AUTO = 0x80, /* EC fan mode: auto fan control */
7244
7245 TPACPI_FAN_LAST_LEVEL = 0x100, /* Use cached last-seen fan level */
7246};
7247
7248enum fan_status_access_mode {
7249 TPACPI_FAN_NONE = 0, /* No fan status or control */
7250 TPACPI_FAN_RD_ACPI_GFAN, /* Use ACPI GFAN */
7251 TPACPI_FAN_RD_TPEC, /* Use ACPI EC regs 0x2f, 0x84-0x85 */
7252};
7253
7254enum fan_control_access_mode {
7255 TPACPI_FAN_WR_NONE = 0, /* No fan control */
7256 TPACPI_FAN_WR_ACPI_SFAN, /* Use ACPI SFAN */
7257 TPACPI_FAN_WR_TPEC, /* Use ACPI EC reg 0x2f */
7258 TPACPI_FAN_WR_ACPI_FANS, /* Use ACPI FANS and EC reg 0x2f */
7259};
7260
7261enum fan_control_commands {
7262 TPACPI_FAN_CMD_SPEED = 0x0001, /* speed command */
7263 TPACPI_FAN_CMD_LEVEL = 0x0002, /* level command */
7264 TPACPI_FAN_CMD_ENABLE = 0x0004, /* enable/disable cmd,
7265 * and also watchdog cmd */
7266};
7267
7268static int fan_control_allowed;
7269
69ba91cb
HMH		 7270static enum fan_status_access_mode fan_status_access_mode;
7271static enum fan_control_access_mode fan_control_access_mode;
7272static enum fan_control_commands fan_control_commands;
78f81cc4 7273
778b4d74 7274static u8 fan_control_initial_status;
fe98a52c 7275static u8 fan_control_desired_level;
0081b162 7276static u8 fan_control_resume_level;
f74a27d4
HMH		 7277static int fan_watchdog_maxinterval;
7278
7279static struct mutex fan_mutex;
778b4d74 7280
25c68a33 7281static void fan_watchdog_fire(struct work_struct *ignored);
25c68a33 7282static DECLARE_DELAYED_WORK(fan_watchdog_task, fan_watchdog_fire);
16663a87 7283
e0c7dfe7
HMH		 7284TPACPI_HANDLE(fans, ec, "FANS"); /* X31, X40, X41 */
7285TPACPI_HANDLE(gfan, ec, "GFAN", /* 570 */
56b6aeb0
HMH		 7286 "\\FSPD", /* 600e/x, 770e, 770x */
7287 ); /* all others */
e0c7dfe7 7288TPACPI_HANDLE(sfan, ec, "SFAN", /* 570 */
56b6aeb0
HMH		 7289 "JFNS", /* 770x-JL */
7290 ); /* all others */
7291
1c2ece75
HMH		 7292/*
7293 * Unitialized HFSP quirk: ACPI DSDT and EC fail to initialize the
7294 * HFSP register at boot, so it contains 0x07 but the Thinkpad could
7295 * be in auto mode (0x80).
7296 *
7297 * This is corrected by any write to HFSP either by the driver, or
7298 * by the firmware.
7299 *
7300 * We assume 0x07 really means auto mode while this quirk is active,
7301 * as this is far more likely than the ThinkPad being in level 7,
7302 * which is only used by the firmware during thermal emergencies.
7d95a3d5
HMH		 7303 *
7304 * Enable for TP-1Y (T43), TP-78 (R51e), TP-76 (R52),
7305 * TP-70 (T43, R52), which are known to be buggy.
1c2ece75
HMH		 7306 */
7307
7d95a3d5 7308static void fan_quirk1_setup(void)
1c2ece75 7309{
1c2ece75 7310 if (fan_control_initial_status == 0x07) {
0978e012
JP		 7311 pr_notice("fan_init: initial fan status is unknown, "
7312 "assuming it is in auto mode\n");
7d95a3d5 7313 tp_features.fan_ctrl_status_undef = 1;
1c2ece75
HMH		 7314 }
7315}
7316
7317static void fan_quirk1_handle(u8 *fan_status)
7318{
7319 if (unlikely(tp_features.fan_ctrl_status_undef)) {
7320 if (*fan_status != fan_control_initial_status) {
7321 /* something changed the HFSP regisnter since
7322 * driver init time, so it is not undefined
7323 * anymore */
7324 tp_features.fan_ctrl_status_undef = 0;
7325 } else {
7326 /* Return most likely status. In fact, it
7327 * might be the only possible status */
7328 *fan_status = TP_EC_FAN_AUTO;
7329 }
7330 }
7331}
7332
d7377247
HMH		 7333/* Select main fan on X60/X61, NOOP on others */
7334static bool fan_select_fan1(void)
7335{
7336 if (tp_features.second_fan) {
7337 u8 val;
7338
7339 if (ec_read(fan_select_offset, &val) < 0)
7340 return false;
7341 val &= 0xFEU;
7342 if (ec_write(fan_select_offset, val) < 0)
7343 return false;
7344 }
7345 return true;
7346}
7347
7348/* Select secondary fan on X60/X61 */
7349static bool fan_select_fan2(void)
7350{
7351 u8 val;
7352
7353 if (!tp_features.second_fan)
7354 return false;
7355
7356 if (ec_read(fan_select_offset, &val) < 0)
7357 return false;
7358 val |= 0x01U;
7359 if (ec_write(fan_select_offset, val) < 0)
7360 return false;
7361
7362 return true;
7363}
7364
fe98a52c 7365/*
b21a15f6 7366 * Call with fan_mutex held
fe98a52c 7367 */
b21a15f6 7368static void fan_update_desired_level(u8 status)
fe98a52c 7369{
b21a15f6
HMH		 7370 if ((status &
7371 (TP_EC_FAN_AUTO | TP_EC_FAN_FULLSPEED)) == 0) {
7372 if (status > 7)
7373 fan_control_desired_level = 7;
7374 else
7375 fan_control_desired_level = status;
7376 }
7377}
fe98a52c 7378
b21a15f6
HMH		 7379static int fan_get_status(u8 *status)
7380{
7381 u8 s;
fe98a52c 7382
b21a15f6
HMH		 7383 /* TODO:
7384 * Add TPACPI_FAN_RD_ACPI_FANS ? */
fe98a52c 7385
b21a15f6
HMH		 7386 switch (fan_status_access_mode) {
7387 case TPACPI_FAN_RD_ACPI_GFAN:
7388 /* 570, 600e/x, 770e, 770x */
fe98a52c 7389
b21a15f6
HMH		 7390 if (unlikely(!acpi_evalf(gfan_handle, &s, NULL, "d")))
7391 return -EIO;
fe98a52c 7392
b21a15f6
HMH		 7393 if (likely(status))
7394 *status = s & 0x07;
fe98a52c 7395
b21a15f6
HMH		 7396 break;
7397
7398 case TPACPI_FAN_RD_TPEC:
7399 /* all except 570, 600e/x, 770e, 770x */
7400 if (unlikely(!acpi_ec_read(fan_status_offset, &s)))
7401 return -EIO;
7402
1c2ece75 7403 if (likely(status)) {
b21a15f6 7404 *status = s;
1c2ece75
HMH		 7405 fan_quirk1_handle(status);
7406 }
fe98a52c 7407
fe98a52c 7408 break;
b21a15f6 7409
fe98a52c 7410 default:
b21a15f6 7411 return -ENXIO;
fe98a52c
HMH		 7412 }
7413
b21a15f6
HMH		 7414 return 0;
7415}
fe98a52c 7416
b21a15f6
HMH		 7417static int fan_get_status_safe(u8 *status)
7418{
7419 int rc;
7420 u8 s;
fe98a52c 7421
7646ea88 7422 if (mutex_lock_killable(&fan_mutex))
b21a15f6
HMH		 7423 return -ERESTARTSYS;
7424 rc = fan_get_status(&s);
7425 if (!rc)
7426 fan_update_desired_level(s);
7427 mutex_unlock(&fan_mutex);
fe98a52c 7428
b21a15f6
HMH		 7429 if (status)
7430 *status = s;
fe98a52c 7431
b21a15f6
HMH		 7432 return rc;
7433}
7434
7435static int fan_get_speed(unsigned int *speed)
fe98a52c 7436{
b21a15f6 7437 u8 hi, lo;
fe98a52c 7438
b21a15f6
HMH		 7439 switch (fan_status_access_mode) {
7440 case TPACPI_FAN_RD_TPEC:
7441 /* all except 570, 600e/x, 770e, 770x */
d7377247
HMH		 7442 if (unlikely(!fan_select_fan1()))
7443 return -EIO;
b21a15f6
HMH		 7444 if (unlikely(!acpi_ec_read(fan_rpm_offset, &lo) ||
7445 !acpi_ec_read(fan_rpm_offset + 1, &hi)))
7446 return -EIO;
fe98a52c 7447
b21a15f6
HMH		 7448 if (likely(speed))
7449 *speed = (hi << 8) | lo;
fe98a52c 7450
b21a15f6 7451 break;
fe98a52c 7452
b21a15f6
HMH		 7453 default:
7454 return -ENXIO;
7455 }
fe98a52c 7456
b21a15f6 7457 return 0;
fe98a52c
HMH		 7458}
7459
d7377247
HMH		 7460static int fan2_get_speed(unsigned int *speed)
7461{
7462 u8 hi, lo;
7463 bool rc;
7464
7465 switch (fan_status_access_mode) {
7466 case TPACPI_FAN_RD_TPEC:
7467 /* all except 570, 600e/x, 770e, 770x */
7468 if (unlikely(!fan_select_fan2()))
7469 return -EIO;
7470 rc = !acpi_ec_read(fan_rpm_offset, &lo) ||
7471 !acpi_ec_read(fan_rpm_offset + 1, &hi);
7472 fan_select_fan1(); /* play it safe */
7473 if (rc)
7474 return -EIO;
7475
7476 if (likely(speed))
7477 *speed = (hi << 8) | lo;
7478
7479 break;
7480
7481 default:
7482 return -ENXIO;
7483 }
7484
7485 return 0;
7486}
7487
b21a15f6 7488static int fan_set_level(int level)
fe98a52c 7489{
b21a15f6
HMH		 7490 if (!fan_control_allowed)
7491 return -EPERM;
fe98a52c 7492
b21a15f6
HMH		 7493 switch (fan_control_access_mode) {
7494 case TPACPI_FAN_WR_ACPI_SFAN:
7495 if (level >= 0 && level <= 7) {
7496 if (!acpi_evalf(sfan_handle, NULL, NULL, "vd", level))
7497 return -EIO;
7498 } else
7499 return -EINVAL;
7500 break;
fe98a52c 7501
b21a15f6
HMH		 7502 case TPACPI_FAN_WR_ACPI_FANS:
7503 case TPACPI_FAN_WR_TPEC:
0081b162
HMH		 7504 if (!(level & TP_EC_FAN_AUTO) &&
7505 !(level & TP_EC_FAN_FULLSPEED) &&
b21a15f6
HMH		 7506 ((level < 0) || (level > 7)))
7507 return -EINVAL;
fe98a52c 7508
b21a15f6
HMH		 7509 /* safety net should the EC not support AUTO
7510 * or FULLSPEED mode bits and just ignore them */
7511 if (level & TP_EC_FAN_FULLSPEED)
7512 level |= 7; /* safety min speed 7 */
547266e4 7513 else if (level & TP_EC_FAN_AUTO)
b21a15f6 7514 level |= 4; /* safety min speed 4 */
fe98a52c 7515
b21a15f6
HMH		 7516 if (!acpi_ec_write(fan_status_offset, level))
7517 return -EIO;
7518 else
7519 tp_features.fan_ctrl_status_undef = 0;
7520 break;
fe98a52c 7521
b21a15f6
HMH		 7522 default:
7523 return -ENXIO;
7524 }
74a60c0f
HMH		 7525
7526 vdbg_printk(TPACPI_DBG_FAN,
7527 "fan control: set fan control register to 0x%02x\n", level);
b21a15f6 7528 return 0;
fe98a52c
HMH		 7529}
7530
b21a15f6 7531static int fan_set_level_safe(int level)
fe98a52c 7532{
b21a15f6 7533 int rc;
fe98a52c 7534
b21a15f6
HMH		 7535 if (!fan_control_allowed)
7536 return -EPERM;
fe98a52c 7537
7646ea88 7538 if (mutex_lock_killable(&fan_mutex))
b21a15f6 7539 return -ERESTARTSYS;
fe98a52c 7540
b21a15f6
HMH		 7541 if (level == TPACPI_FAN_LAST_LEVEL)
7542 level = fan_control_desired_level;
fe98a52c 7543
b21a15f6
HMH		 7544 rc = fan_set_level(level);
7545 if (!rc)
7546 fan_update_desired_level(level);
7547
7548 mutex_unlock(&fan_mutex);
7549 return rc;
fe98a52c
HMH		 7550}
7551
b21a15f6 7552static int fan_set_enable(void)
fe98a52c 7553{
b21a15f6
HMH		 7554 u8 s;
7555 int rc;
fe98a52c 7556
ecf2a80a
HMH		 7557 if (!fan_control_allowed)
7558 return -EPERM;
7559
7646ea88 7560 if (mutex_lock_killable(&fan_mutex))
b21a15f6 7561 return -ERESTARTSYS;
fe98a52c 7562
b21a15f6
HMH		 7563 switch (fan_control_access_mode) {
7564 case TPACPI_FAN_WR_ACPI_FANS:
7565 case TPACPI_FAN_WR_TPEC:
7566 rc = fan_get_status(&s);
7567 if (rc < 0)
7568 break;
fe98a52c 7569
b21a15f6
HMH		 7570 /* Don't go out of emergency fan mode */
7571 if (s != 7) {
7572 s &= 0x07;
7573 s |= TP_EC_FAN_AUTO | 4; /* min fan speed 4 */
7574 }
fe98a52c 7575
b21a15f6
HMH		 7576 if (!acpi_ec_write(fan_status_offset, s))
7577 rc = -EIO;
7578 else {
7579 tp_features.fan_ctrl_status_undef = 0;
7580 rc = 0;
7581 }
7582 break;
fe98a52c 7583
b21a15f6
HMH		 7584 case TPACPI_FAN_WR_ACPI_SFAN:
7585 rc = fan_get_status(&s);
7586 if (rc < 0)
7587 break;
fe98a52c 7588
b21a15f6 7589 s &= 0x07;
fe98a52c 7590
b21a15f6
HMH		 7591 /* Set fan to at least level 4 */
7592 s |= 4;
fe08bc4b 7593
b21a15f6 7594 if (!acpi_evalf(sfan_handle, NULL, NULL, "vd", s))
35ff8b9f 7595 rc = -EIO;
b21a15f6
HMH		 7596 else
7597 rc = 0;
7598 break;
78f81cc4 7599
b21a15f6
HMH		 7600 default:
7601 rc = -ENXIO;
7602 }
5fba344c 7603
b21a15f6 7604 mutex_unlock(&fan_mutex);
74a60c0f
HMH		 7605
7606 if (!rc)
7607 vdbg_printk(TPACPI_DBG_FAN,
7608 "fan control: set fan control register to 0x%02x\n",
7609 s);
b21a15f6 7610 return rc;
69ba91cb 7611}
78f81cc4 7612
b21a15f6 7613static int fan_set_disable(void)
78f81cc4 7614{
b21a15f6 7615 int rc;
c52f0aa5 7616
b21a15f6
HMH		 7617 if (!fan_control_allowed)
7618 return -EPERM;
78f81cc4 7619
7646ea88 7620 if (mutex_lock_killable(&fan_mutex))
b21a15f6 7621 return -ERESTARTSYS;
3ef8a609 7622
b21a15f6
HMH		 7623 rc = 0;
7624 switch (fan_control_access_mode) {
7625 case TPACPI_FAN_WR_ACPI_FANS:
7626 case TPACPI_FAN_WR_TPEC:
7627 if (!acpi_ec_write(fan_status_offset, 0x00))
7628 rc = -EIO;
7629 else {
7630 fan_control_desired_level = 0;
7631 tp_features.fan_ctrl_status_undef = 0;
7632 }
3ef8a609
HMH		 7633 break;
7634
b21a15f6
HMH		 7635 case TPACPI_FAN_WR_ACPI_SFAN:
7636 if (!acpi_evalf(sfan_handle, NULL, NULL, "vd", 0x00))
7637 rc = -EIO;
7638 else
7639 fan_control_desired_level = 0;
c52f0aa5
HMH		 7640 break;
7641
7642 default:
b21a15f6 7643 rc = -ENXIO;
78f81cc4
BD		 7644 }
7645
74a60c0f
HMH		 7646 if (!rc)
7647 vdbg_printk(TPACPI_DBG_FAN,
7648 "fan control: set fan control register to 0\n");
fe98a52c 7649
fe98a52c 7650 mutex_unlock(&fan_mutex);
fe98a52c
HMH		 7651 return rc;
7652}
7653
b21a15f6 7654static int fan_set_speed(int speed)
c52f0aa5 7655{
b21a15f6 7656 int rc;
c52f0aa5 7657
b21a15f6
HMH		 7658 if (!fan_control_allowed)
7659 return -EPERM;
3ef8a609 7660
7646ea88 7661 if (mutex_lock_killable(&fan_mutex))
b21a15f6 7662 return -ERESTARTSYS;
c52f0aa5 7663
b21a15f6
HMH		 7664 rc = 0;
7665 switch (fan_control_access_mode) {
7666 case TPACPI_FAN_WR_ACPI_FANS:
7667 if (speed >= 0 && speed <= 65535) {
7668 if (!acpi_evalf(fans_handle, NULL, NULL, "vddd",
7669 speed, speed, speed))
7670 rc = -EIO;
7671 } else
7672 rc = -EINVAL;
c52f0aa5
HMH		 7673 break;
7674
7675 default:
b21a15f6 7676 rc = -ENXIO;
c52f0aa5
HMH		 7677 }
7678
b21a15f6
HMH		 7679 mutex_unlock(&fan_mutex);
7680 return rc;
16663a87
HMH		 7681}
7682
7683static void fan_watchdog_reset(void)
7684{
94954cc6 7685 static int fan_watchdog_active;
16663a87 7686
4985cd0a
HMH		 7687 if (fan_control_access_mode == TPACPI_FAN_WR_NONE)
7688 return;
7689
16663a87
HMH		 7690 if (fan_watchdog_active)
7691 cancel_delayed_work(&fan_watchdog_task);
7692
8fef502e
HMH		 7693 if (fan_watchdog_maxinterval > 0 &&
7694 tpacpi_lifecycle != TPACPI_LIFE_EXITING) {
16663a87 7695 fan_watchdog_active = 1;
e0e3c061 7696 if (!queue_delayed_work(tpacpi_wq, &fan_watchdog_task,
16663a87
HMH		 7697 msecs_to_jiffies(fan_watchdog_maxinterval
7698 * 1000))) {
0978e012 7699 pr_err("failed to queue the fan watchdog, "
16663a87
HMH		 7700 "watchdog will not trigger\n");
7701 }
7702 } else
7703 fan_watchdog_active = 0;
7704}
7705
b21a15f6 7706static void fan_watchdog_fire(struct work_struct *ignored)
78f81cc4 7707{
b21a15f6 7708 int rc;
18ad7996 7709
b21a15f6
HMH		 7710 if (tpacpi_lifecycle != TPACPI_LIFE_RUNNING)
7711 return;
a12095c2 7712
0978e012 7713 pr_notice("fan watchdog: enabling fan\n");
b21a15f6
HMH		 7714 rc = fan_set_enable();
7715 if (rc < 0) {
0978e012
JP		 7716 pr_err("fan watchdog: error %d while enabling fan, "
7717 "will try again later...\n", -rc);
b21a15f6
HMH		 7718 /* reschedule for later */
7719 fan_watchdog_reset();
7720 }
7721}
eaa7571b 7722
b21a15f6
HMH		 7723/*
7724 * SYSFS fan layout: hwmon compatible (device)
7725 *
7726 * pwm*_enable:
7727 * 0: "disengaged" mode
7728 * 1: manual mode
7729 * 2: native EC "auto" mode (recommended, hardware default)
7730 *
7731 * pwm*: set speed in manual mode, ignored otherwise.
7732 * 0 is level 0; 255 is level 7. Intermediate points done with linear
7733 * interpolation.
7734 *
7735 * fan*_input: tachometer reading, RPM
7736 *
7737 *
7738 * SYSFS fan layout: extensions
7739 *
7740 * fan_watchdog (driver):
7741 * fan watchdog interval in seconds, 0 disables (default), max 120
7742 */
7743
7744/* sysfs fan pwm1_enable ----------------------------------------------- */
7745static ssize_t fan_pwm1_enable_show(struct device *dev,
7746 struct device_attribute *attr,
7747 char *buf)
7748{
7749 int res, mode;
7750 u8 status;
7751
7752 res = fan_get_status_safe(&status);
7753 if (res)
7754 return res;
7755
b21a15f6
HMH		 7756 if (status & TP_EC_FAN_FULLSPEED) {
7757 mode = 0;
7758 } else if (status & TP_EC_FAN_AUTO) {
7759 mode = 2;
7760 } else
7761 mode = 1;
7762
7763 return snprintf(buf, PAGE_SIZE, "%d\n", mode);
7764}
a12095c2 7765
b21a15f6
HMH		 7766static ssize_t fan_pwm1_enable_store(struct device *dev,
7767 struct device_attribute *attr,
7768 const char *buf, size_t count)
7769{
7770 unsigned long t;
7771 int res, level;
7772
7773 if (parse_strtoul(buf, 2, &t))
7774 return -EINVAL;
7775
74a60c0f
HMH		 7776 tpacpi_disclose_usertask("hwmon pwm1_enable",
7777 "set fan mode to %lu\n", t);
7778
b21a15f6
HMH		 7779 switch (t) {
7780 case 0:
7781 level = TP_EC_FAN_FULLSPEED;
7782 break;
7783 case 1:
7784 level = TPACPI_FAN_LAST_LEVEL;
7785 break;
7786 case 2:
7787 level = TP_EC_FAN_AUTO;
7788 break;
7789 case 3:
7790 /* reserved for software-controlled auto mode */
7791 return -ENOSYS;
18ad7996 7792 default:
b21a15f6 7793 return -EINVAL;
18ad7996 7794 }
b21a15f6
HMH		 7795
7796 res = fan_set_level_safe(level);
7797 if (res == -ENXIO)
7798 return -EINVAL;
7799 else if (res < 0)
7800 return res;
7801
7802 fan_watchdog_reset();
7803
7804 return count;
18ad7996
HMH		 7805}
7806
b21a15f6
HMH		 7807static struct device_attribute dev_attr_fan_pwm1_enable =
7808 __ATTR(pwm1_enable, S_IWUSR | S_IRUGO,
7809 fan_pwm1_enable_show, fan_pwm1_enable_store);
7810
7811/* sysfs fan pwm1 ------------------------------------------------------ */
7812static ssize_t fan_pwm1_show(struct device *dev,
7813 struct device_attribute *attr,
7814 char *buf)
fe98a52c 7815{
b21a15f6
HMH		 7816 int res;
7817 u8 status;
fe98a52c 7818
b21a15f6
HMH		 7819 res = fan_get_status_safe(&status);
7820 if (res)
7821 return res;
ecf2a80a 7822
b21a15f6
HMH		 7823 if ((status &
7824 (TP_EC_FAN_AUTO | TP_EC_FAN_FULLSPEED)) != 0)
7825 status = fan_control_desired_level;
fe98a52c 7826
b21a15f6
HMH		 7827 if (status > 7)
7828 status = 7;
fe98a52c 7829
b21a15f6 7830 return snprintf(buf, PAGE_SIZE, "%u\n", (status * 255) / 7);
fe98a52c
HMH		 7831}
7832
b21a15f6
HMH		 7833static ssize_t fan_pwm1_store(struct device *dev,
7834 struct device_attribute *attr,
7835 const char *buf, size_t count)
18ad7996 7836{
b21a15f6 7837 unsigned long s;
1c6a334e 7838 int rc;
b21a15f6 7839 u8 status, newlevel;
1c6a334e 7840
b21a15f6
HMH		 7841 if (parse_strtoul(buf, 255, &s))
7842 return -EINVAL;
7843
74a60c0f
HMH		 7844 tpacpi_disclose_usertask("hwmon pwm1",
7845 "set fan speed to %lu\n", s);
7846
b21a15f6
HMH		 7847 /* scale down from 0-255 to 0-7 */
7848 newlevel = (s >> 5) & 0x07;
ecf2a80a 7849
7646ea88 7850 if (mutex_lock_killable(&fan_mutex))
fc589a3c 7851 return -ERESTARTSYS;
40ca9fdf 7852
b21a15f6
HMH		 7853 rc = fan_get_status(&status);
7854 if (!rc && (status &
7855 (TP_EC_FAN_AUTO | TP_EC_FAN_FULLSPEED)) == 0) {
7856 rc = fan_set_level(newlevel);
7857 if (rc == -ENXIO)
7858 rc = -EINVAL;
7859 else if (!rc) {
7860 fan_update_desired_level(newlevel);
7861 fan_watchdog_reset();
eaa7571b 7862 }
b21a15f6 7863 }
1c6a334e 7864
b21a15f6
HMH		 7865 mutex_unlock(&fan_mutex);
7866 return (rc)? rc : count;
7867}
1c6a334e 7868
b21a15f6
HMH		 7869static struct device_attribute dev_attr_fan_pwm1 =
7870 __ATTR(pwm1, S_IWUSR | S_IRUGO,
7871 fan_pwm1_show, fan_pwm1_store);
1c6a334e 7872
b21a15f6
HMH		 7873/* sysfs fan fan1_input ------------------------------------------------ */
7874static ssize_t fan_fan1_input_show(struct device *dev,
7875 struct device_attribute *attr,
7876 char *buf)
7877{
7878 int res;
7879 unsigned int speed;
1c6a334e 7880
b21a15f6
HMH		 7881 res = fan_get_speed(&speed);
7882 if (res < 0)
7883 return res;
1c6a334e 7884
b21a15f6
HMH		 7885 return snprintf(buf, PAGE_SIZE, "%u\n", speed);
7886}
18ad7996 7887
b21a15f6
HMH		 7888static struct device_attribute dev_attr_fan_fan1_input =
7889 __ATTR(fan1_input, S_IRUGO,
7890 fan_fan1_input_show, NULL);
40ca9fdf 7891
d7377247
HMH		 7892/* sysfs fan fan2_input ------------------------------------------------ */
7893static ssize_t fan_fan2_input_show(struct device *dev,
7894 struct device_attribute *attr,
7895 char *buf)
7896{
7897 int res;
7898 unsigned int speed;
7899
7900 res = fan2_get_speed(&speed);
7901 if (res < 0)
7902 return res;
7903
7904 return snprintf(buf, PAGE_SIZE, "%u\n", speed);
7905}
7906
7907static struct device_attribute dev_attr_fan_fan2_input =
7908 __ATTR(fan2_input, S_IRUGO,
7909 fan_fan2_input_show, NULL);
7910
b21a15f6
HMH		 7911/* sysfs fan fan_watchdog (hwmon driver) ------------------------------- */
7912static ssize_t fan_fan_watchdog_show(struct device_driver *drv,
7913 char *buf)
7914{
7915 return snprintf(buf, PAGE_SIZE, "%u\n", fan_watchdog_maxinterval);
18ad7996
HMH		 7916}
7917
b21a15f6
HMH		 7918static ssize_t fan_fan_watchdog_store(struct device_driver *drv,
7919 const char *buf, size_t count)
18ad7996 7920{
b21a15f6
HMH		 7921 unsigned long t;
7922
7923 if (parse_strtoul(buf, 120, &t))
7924 return -EINVAL;
40ca9fdf 7925
ecf2a80a
HMH		 7926 if (!fan_control_allowed)
7927 return -EPERM;
7928
b21a15f6
HMH		 7929 fan_watchdog_maxinterval = t;
7930 fan_watchdog_reset();
40ca9fdf 7931
74a60c0f
HMH		 7932 tpacpi_disclose_usertask("fan_watchdog", "set to %lu\n", t);
7933
b21a15f6
HMH		 7934 return count;
7935}
7936
7937static DRIVER_ATTR(fan_watchdog, S_IWUSR | S_IRUGO,
7938 fan_fan_watchdog_show, fan_fan_watchdog_store);
7939
7940/* --------------------------------------------------------------------- */
7941static struct attribute *fan_attributes[] = {
7942 &dev_attr_fan_pwm1_enable.attr, &dev_attr_fan_pwm1.attr,
7943 &dev_attr_fan_fan1_input.attr,
d7377247 7944 NULL, /* for fan2_input */
b21a15f6
HMH		 7945 NULL
7946};
7947
7948static const struct attribute_group fan_attr_group = {
7949 .attrs = fan_attributes,
7950};
7951
d7377247
HMH		 7952#define TPACPI_FAN_Q1 0x0001 /* Unitialized HFSP */
7953#define TPACPI_FAN_2FAN 0x0002 /* EC 0x31 bit 0 selects fan2 */
7d95a3d5
HMH		 7954
7955#define TPACPI_FAN_QI(__id1, __id2, __quirks) \
7956 { .vendor = PCI_VENDOR_ID_IBM, \
7957 .bios = TPACPI_MATCH_ANY, \
7958 .ec = TPID(__id1, __id2), \
7959 .quirks = __quirks }
7960
d7377247
HMH		 7961#define TPACPI_FAN_QL(__id1, __id2, __quirks) \
7962 { .vendor = PCI_VENDOR_ID_LENOVO, \
7963 .bios = TPACPI_MATCH_ANY, \
7964 .ec = TPID(__id1, __id2), \
7965 .quirks = __quirks }
7966
7d95a3d5
HMH		 7967static const struct tpacpi_quirk fan_quirk_table[] __initconst = {
7968 TPACPI_FAN_QI('1', 'Y', TPACPI_FAN_Q1),
7969 TPACPI_FAN_QI('7', '8', TPACPI_FAN_Q1),
7970 TPACPI_FAN_QI('7', '6', TPACPI_FAN_Q1),
7971 TPACPI_FAN_QI('7', '0', TPACPI_FAN_Q1),
d7377247 7972 TPACPI_FAN_QL('7', 'M', TPACPI_FAN_2FAN),
7d95a3d5
HMH		 7973};
7974
d7377247 7975#undef TPACPI_FAN_QL
7d95a3d5
HMH		 7976#undef TPACPI_FAN_QI
7977
b21a15f6
HMH		 7978static int __init fan_init(struct ibm_init_struct *iibm)
7979{
7980 int rc;
7d95a3d5 7981 unsigned long quirks;
b21a15f6 7982
74a60c0f
HMH		 7983 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_FAN,
7984 "initializing fan subdriver\n");
b21a15f6
HMH		 7985
7986 mutex_init(&fan_mutex);
7987 fan_status_access_mode = TPACPI_FAN_NONE;
7988 fan_control_access_mode = TPACPI_FAN_WR_NONE;
7989 fan_control_commands = 0;
7990 fan_watchdog_maxinterval = 0;
7991 tp_features.fan_ctrl_status_undef = 0;
d7377247 7992 tp_features.second_fan = 0;
b21a15f6
HMH		 7993 fan_control_desired_level = 7;
7994
e28393c0
HMH		 7995 if (tpacpi_is_ibm()) {
7996 TPACPI_ACPIHANDLE_INIT(fans);
7997 TPACPI_ACPIHANDLE_INIT(gfan);
7998 TPACPI_ACPIHANDLE_INIT(sfan);
7999 }
b21a15f6 8000
7d95a3d5
HMH		 8001 quirks = tpacpi_check_quirks(fan_quirk_table,
8002 ARRAY_SIZE(fan_quirk_table));
8003
b21a15f6
HMH		 8004 if (gfan_handle) {
8005 /* 570, 600e/x, 770e, 770x */
8006 fan_status_access_mode = TPACPI_FAN_RD_ACPI_GFAN;
8007 } else {
8008 /* all other ThinkPads: note that even old-style
8009 * ThinkPad ECs supports the fan control register */
8010 if (likely(acpi_ec_read(fan_status_offset,
8011 &fan_control_initial_status))) {
8012 fan_status_access_mode = TPACPI_FAN_RD_TPEC;
7d95a3d5
HMH		 8013 if (quirks & TPACPI_FAN_Q1)
8014 fan_quirk1_setup();
d7377247
HMH		 8015 if (quirks & TPACPI_FAN_2FAN) {
8016 tp_features.second_fan = 1;
8017 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_FAN,
8018 "secondary fan support enabled\n");
8019 }
b21a15f6 8020 } else {
0978e012 8021 pr_err("ThinkPad ACPI EC access misbehaving, "
b21a15f6
HMH		 8022 "fan status and control unavailable\n");
8023 return 1;
8024 }
8025 }
8026
8027 if (sfan_handle) {
8028 /* 570, 770x-JL */
8029 fan_control_access_mode = TPACPI_FAN_WR_ACPI_SFAN;
8030 fan_control_commands |=
8031 TPACPI_FAN_CMD_LEVEL | TPACPI_FAN_CMD_ENABLE;
8032 } else {
8033 if (!gfan_handle) {
8034 /* gfan without sfan means no fan control */
8035 /* all other models implement TP EC 0x2f control */
8036
8037 if (fans_handle) {
8038 /* X31, X40, X41 */
8039 fan_control_access_mode =
8040 TPACPI_FAN_WR_ACPI_FANS;
8041 fan_control_commands |=
8042 TPACPI_FAN_CMD_SPEED |
8043 TPACPI_FAN_CMD_LEVEL |
8044 TPACPI_FAN_CMD_ENABLE;
8045 } else {
8046 fan_control_access_mode = TPACPI_FAN_WR_TPEC;
8047 fan_control_commands |=
8048 TPACPI_FAN_CMD_LEVEL |
8049 TPACPI_FAN_CMD_ENABLE;
8050 }
fe98a52c 8051 }
b21a15f6 8052 }
18ad7996 8053
74a60c0f
HMH		 8054 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_FAN,
8055 "fan is %s, modes %d, %d\n",
b21a15f6
HMH		 8056 str_supported(fan_status_access_mode != TPACPI_FAN_NONE ||
8057 fan_control_access_mode != TPACPI_FAN_WR_NONE),
8058 fan_status_access_mode, fan_control_access_mode);
1c6a334e 8059
b21a15f6
HMH		 8060 /* fan control master switch */
8061 if (!fan_control_allowed) {
8062 fan_control_access_mode = TPACPI_FAN_WR_NONE;
8063 fan_control_commands = 0;
74a60c0f 8064 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_FAN,
b21a15f6 8065 "fan control features disabled by parameter\n");
18ad7996 8066 }
40ca9fdf 8067
b21a15f6
HMH		 8068 /* update fan_control_desired_level */
8069 if (fan_status_access_mode != TPACPI_FAN_NONE)
8070 fan_get_status_safe(NULL);
fe98a52c 8071
b21a15f6
HMH		 8072 if (fan_status_access_mode != TPACPI_FAN_NONE ||
8073 fan_control_access_mode != TPACPI_FAN_WR_NONE) {
d7377247
HMH		 8074 if (tp_features.second_fan) {
8075 /* attach second fan tachometer */
8076 fan_attributes[ARRAY_SIZE(fan_attributes)-2] =
8077 &dev_attr_fan_fan2_input.attr;
8078 }
b21a15f6
HMH		 8079 rc = sysfs_create_group(&tpacpi_sensors_pdev->dev.kobj,
8080 &fan_attr_group);
b21a15f6
HMH		 8081 if (rc < 0)
8082 return rc;
9c0a76e1
HMH		 8083
8084 rc = driver_create_file(&tpacpi_hwmon_pdriver.driver,
8085 &driver_attr_fan_watchdog);
8086 if (rc < 0) {
8087 sysfs_remove_group(&tpacpi_sensors_pdev->dev.kobj,
8088 &fan_attr_group);
8089 return rc;
8090 }
b21a15f6
HMH		 8091 return 0;
8092 } else
8093 return 1;
56b6aeb0
HMH		 8094}
8095
b21a15f6 8096static void fan_exit(void)
56b6aeb0 8097{
74a60c0f 8098 vdbg_printk(TPACPI_DBG_EXIT | TPACPI_DBG_FAN,
35ff8b9f 8099 "cancelling any pending fan watchdog tasks\n");
56b6aeb0 8100
b21a15f6
HMH		 8101 /* FIXME: can we really do this unconditionally? */
8102 sysfs_remove_group(&tpacpi_sensors_pdev->dev.kobj, &fan_attr_group);
35ff8b9f
HMH		 8103 driver_remove_file(&tpacpi_hwmon_pdriver.driver,
8104 &driver_attr_fan_watchdog);
40ca9fdf 8105
b21a15f6 8106 cancel_delayed_work(&fan_watchdog_task);
e0e3c061 8107 flush_workqueue(tpacpi_wq);
56b6aeb0
HMH		 8108}
8109
75700e53
HMH		 8110static void fan_suspend(pm_message_t state)
8111{
0081b162
HMH		 8112 int rc;
8113
75700e53
HMH		 8114 if (!fan_control_allowed)
8115 return;
8116
8117 /* Store fan status in cache */
0081b162
HMH		 8118 fan_control_resume_level = 0;
8119 rc = fan_get_status_safe(&fan_control_resume_level);
8120 if (rc < 0)
0978e012
JP		 8121 pr_notice("failed to read fan level for later "
8122 "restore during resume: %d\n", rc);
0081b162
HMH		 8123
8124 /* if it is undefined, don't attempt to restore it.
8125 * KEEP THIS LAST */
75700e53 8126 if (tp_features.fan_ctrl_status_undef)
0081b162 8127 fan_control_resume_level = 0;
75700e53
HMH		 8128}
8129
8130static void fan_resume(void)
8131{
75700e53
HMH		 8132 u8 current_level = 7;
8133 bool do_set = false;
0081b162 8134 int rc;
75700e53
HMH		 8135
8136 /* DSDT *always* updates status on resume */
8137 tp_features.fan_ctrl_status_undef = 0;
8138
75700e53 8139 if (!fan_control_allowed ||
0081b162 8140 !fan_control_resume_level ||
75700e53
HMH		 8141 (fan_get_status_safe(&current_level) < 0))
8142 return;
8143
8144 switch (fan_control_access_mode) {
8145 case TPACPI_FAN_WR_ACPI_SFAN:
0081b162
HMH		 8146 /* never decrease fan level */
8147 do_set = (fan_control_resume_level > current_level);
75700e53
HMH		 8148 break;
8149 case TPACPI_FAN_WR_ACPI_FANS:
8150 case TPACPI_FAN_WR_TPEC:
0081b162
HMH		 8151 /* never decrease fan level, scale is:
8152 * TP_EC_FAN_FULLSPEED > 7 >= TP_EC_FAN_AUTO
8153 *
8154 * We expect the firmware to set either 7 or AUTO, but we
8155 * handle FULLSPEED out of paranoia.
8156 *
8157 * So, we can safely only restore FULLSPEED or 7, anything
8158 * else could slow the fan. Restoring AUTO is useless, at
8159 * best that's exactly what the DSDT already set (it is the
8160 * slower it uses).
8161 *
8162 * Always keep in mind that the DSDT *will* have set the
8163 * fans to what the vendor supposes is the best level. We
8164 * muck with it only to speed the fan up.
8165 */
8166 if (fan_control_resume_level != 7 &&
8167 !(fan_control_resume_level & TP_EC_FAN_FULLSPEED))
8168 return;
8169 else
8170 do_set = !(current_level & TP_EC_FAN_FULLSPEED) &&
8171 (current_level != fan_control_resume_level);
75700e53
HMH		 8172 break;
8173 default:
8174 return;
8175 }
8176 if (do_set) {
0978e012
JP		 8177 pr_notice("restoring fan level to 0x%02x\n",
8178 fan_control_resume_level);
0081b162
HMH		 8179 rc = fan_set_level_safe(fan_control_resume_level);
8180 if (rc < 0)
0978e012 8181 pr_notice("failed to restore fan level: %d\n", rc);
75700e53
HMH		 8182 }
8183}
8184
887965e6 8185static int fan_read(struct seq_file *m)
56b6aeb0 8186{
56b6aeb0
HMH		 8187 int rc;
8188 u8 status;
8189 unsigned int speed = 0;
8190
8191 switch (fan_status_access_mode) {
efa27145 8192 case TPACPI_FAN_RD_ACPI_GFAN:
56b6aeb0 8193 /* 570, 600e/x, 770e, 770x */
35ff8b9f
HMH		 8194 rc = fan_get_status_safe(&status);
8195 if (rc < 0)
56b6aeb0
HMH		 8196 return rc;
8197
887965e6 8198 seq_printf(m, "status:\t\t%s\n"
56b6aeb0
HMH		 8199 "level:\t\t%d\n",
8200 (status != 0) ? "enabled" : "disabled", status);
8201 break;
8202
efa27145 8203 case TPACPI_FAN_RD_TPEC:
56b6aeb0 8204 /* all except 570, 600e/x, 770e, 770x */
35ff8b9f
HMH		 8205 rc = fan_get_status_safe(&status);
8206 if (rc < 0)
56b6aeb0
HMH		 8207 return rc;
8208
887965e6 8209 seq_printf(m, "status:\t\t%s\n",
56b6aeb0
HMH		 8210 (status != 0) ? "enabled" : "disabled");
8211
35ff8b9f
HMH		 8212 rc = fan_get_speed(&speed);
8213 if (rc < 0)
56b6aeb0
HMH		 8214 return rc;
8215
887965e6 8216 seq_printf(m, "speed:\t\t%d\n", speed);
56b6aeb0 8217
efa27145 8218 if (status & TP_EC_FAN_FULLSPEED)
56b6aeb0 8219 /* Disengaged mode takes precedence */
887965e6 8220 seq_printf(m, "level:\t\tdisengaged\n");
efa27145 8221 else if (status & TP_EC_FAN_AUTO)
887965e6 8222 seq_printf(m, "level:\t\tauto\n");
56b6aeb0 8223 else
887965e6 8224 seq_printf(m, "level:\t\t%d\n", status);
56b6aeb0
HMH		 8225 break;
8226
efa27145 8227 case TPACPI_FAN_NONE:
56b6aeb0 8228 default:
887965e6 8229 seq_printf(m, "status:\t\tnot supported\n");
56b6aeb0
HMH		 8230 }
8231
efa27145 8232 if (fan_control_commands & TPACPI_FAN_CMD_LEVEL) {
887965e6 8233 seq_printf(m, "commands:\tlevel <level>");
56b6aeb0
HMH		 8234
8235 switch (fan_control_access_mode) {
efa27145 8236 case TPACPI_FAN_WR_ACPI_SFAN:
887965e6 8237 seq_printf(m, " (<level> is 0-7)\n");
56b6aeb0
HMH		 8238 break;
8239
8240 default:
887965e6 8241 seq_printf(m, " (<level> is 0-7, "
fe98a52c 8242 "auto, disengaged, full-speed)\n");
56b6aeb0
HMH		 8243 break;
8244 }
8245 }
18ad7996 8246
efa27145 8247 if (fan_control_commands & TPACPI_FAN_CMD_ENABLE)
887965e6 8248 seq_printf(m, "commands:\tenable, disable\n"
35ff8b9f
HMH		 8249 "commands:\twatchdog <timeout> (<timeout> "
8250 "is 0 (off), 1-120 (seconds))\n");
1da177e4 8251
efa27145 8252 if (fan_control_commands & TPACPI_FAN_CMD_SPEED)
887965e6 8253 seq_printf(m, "commands:\tspeed <speed>"
56b6aeb0
HMH		 8254 " (<speed> is 0-65535)\n");
8255
887965e6 8256 return 0;
78f81cc4
BD		 8257}
8258
18ad7996
HMH		 8259static int fan_write_cmd_level(const char *cmd, int *rc)
8260{
8261 int level;
8262
a12095c2 8263 if (strlencmp(cmd, "level auto") == 0)
efa27145 8264 level = TP_EC_FAN_AUTO;
fe98a52c 8265 else if ((strlencmp(cmd, "level disengaged") == 0) |
35ff8b9f 8266 (strlencmp(cmd, "level full-speed") == 0))
efa27145 8267 level = TP_EC_FAN_FULLSPEED;
a12095c2 8268 else if (sscanf(cmd, "level %d", &level) != 1)
18ad7996
HMH		 8269 return 0;
8270
35ff8b9f
HMH		 8271 *rc = fan_set_level_safe(level);
8272 if (*rc == -ENXIO)
0978e012
JP		 8273 pr_err("level command accepted for unsupported access mode %d\n",
8274 fan_control_access_mode);
74a60c0f
HMH		 8275 else if (!*rc)
8276 tpacpi_disclose_usertask("procfs fan",
8277 "set level to %d\n", level);
18ad7996
HMH		 8278
8279 return 1;
8280}
8281
8282static int fan_write_cmd_enable(const char *cmd, int *rc)
8283{
8284 if (strlencmp(cmd, "enable") != 0)
8285 return 0;
8286
35ff8b9f
HMH		 8287 *rc = fan_set_enable();
8288 if (*rc == -ENXIO)
0978e012
JP		 8289 pr_err("enable command accepted for unsupported access mode %d\n",
8290 fan_control_access_mode);
74a60c0f
HMH		 8291 else if (!*rc)
8292 tpacpi_disclose_usertask("procfs fan", "enable\n");
18ad7996
HMH		 8293
8294 return 1;
8295}
8296
8297static int fan_write_cmd_disable(const char *cmd, int *rc)
8298{
8299 if (strlencmp(cmd, "disable") != 0)
8300 return 0;
8301
35ff8b9f
HMH		 8302 *rc = fan_set_disable();
8303 if (*rc == -ENXIO)
0978e012
JP		 8304 pr_err("disable command accepted for unsupported access mode %d\n",
8305 fan_control_access_mode);
74a60c0f
HMH		 8306 else if (!*rc)
8307 tpacpi_disclose_usertask("procfs fan", "disable\n");
18ad7996
HMH		 8308
8309 return 1;
8310}
8311
8312static int fan_write_cmd_speed(const char *cmd, int *rc)
8313{
8314 int speed;
8315
a8b7a662
HMH		 8316 /* TODO:
8317 * Support speed <low> <medium> <high> ? */
8318
18ad7996
HMH		 8319 if (sscanf(cmd, "speed %d", &speed) != 1)
8320 return 0;
8321
35ff8b9f
HMH		 8322 *rc = fan_set_speed(speed);
8323 if (*rc == -ENXIO)
0978e012
JP		 8324 pr_err("speed command accepted for unsupported access mode %d\n",
8325 fan_control_access_mode);
74a60c0f
HMH		 8326 else if (!*rc)
8327 tpacpi_disclose_usertask("procfs fan",
8328 "set speed to %d\n", speed);
18ad7996
HMH		 8329
8330 return 1;
8331}
8332
16663a87
HMH		 8333static int fan_write_cmd_watchdog(const char *cmd, int *rc)
8334{
8335 int interval;
8336
8337 if (sscanf(cmd, "watchdog %d", &interval) != 1)
8338 return 0;
8339
8340 if (interval < 0 || interval > 120)
8341 *rc = -EINVAL;
74a60c0f 8342 else {
16663a87 8343 fan_watchdog_maxinterval = interval;
74a60c0f
HMH		 8344 tpacpi_disclose_usertask("procfs fan",
8345 "set watchdog timer to %d\n",
8346 interval);
8347 }
16663a87
HMH		 8348
8349 return 1;
8350}
8351
18ad7996
HMH		 8352static int fan_write(char *buf)
8353{
8354 char *cmd;
8355 int rc = 0;
8356
8357 while (!rc && (cmd = next_cmd(&buf))) {
efa27145 8358 if (!((fan_control_commands & TPACPI_FAN_CMD_LEVEL) &&
18ad7996 8359 fan_write_cmd_level(cmd, &rc)) &&
efa27145 8360 !((fan_control_commands & TPACPI_FAN_CMD_ENABLE) &&
18ad7996 8361 (fan_write_cmd_enable(cmd, &rc) ||
16663a87
HMH		 8362 fan_write_cmd_disable(cmd, &rc) ||
8363 fan_write_cmd_watchdog(cmd, &rc))) &&
efa27145 8364 !((fan_control_commands & TPACPI_FAN_CMD_SPEED) &&
18ad7996
HMH		 8365 fan_write_cmd_speed(cmd, &rc))
8366 )
8367 rc = -EINVAL;
16663a87
HMH		 8368 else if (!rc)
8369 fan_watchdog_reset();
18ad7996
HMH		 8370 }
8371
8372 return rc;
8373}
8374
a5763f22
HMH		 8375static struct ibm_struct fan_driver_data = {
8376 .name = "fan",
8377 .read = fan_read,
8378 .write = fan_write,
8379 .exit = fan_exit,
75700e53
HMH		 8380 .suspend = fan_suspend,
8381 .resume = fan_resume,
a5763f22
HMH		 8382};
8383
56b6aeb0
HMH		 8384/****************************************************************************
8385 ****************************************************************************
8386 *
8387 * Infrastructure
8388 *
8389 ****************************************************************************
8390 ****************************************************************************/
8391
8b468c0c
HMH		 8392/*
8393 * HKEY event callout for other subdrivers go here
8394 * (yes, it is ugly, but it is quick, safe, and gets the job done
8395 */
8396static void tpacpi_driver_event(const unsigned int hkey_event)
8397{
347a2686
HMH		 8398 if (ibm_backlight_device) {
8399 switch (hkey_event) {
8400 case TP_HKEY_EV_BRGHT_UP:
8401 case TP_HKEY_EV_BRGHT_DOWN:
8402 tpacpi_brightness_notify_change();
8403 }
8404 }
0d204c34
HMH		 8405 if (alsa_card) {
8406 switch (hkey_event) {
8407 case TP_HKEY_EV_VOL_UP:
8408 case TP_HKEY_EV_VOL_DOWN:
8409 case TP_HKEY_EV_VOL_MUTE:
8410 volume_alsa_notify_change();
8411 }
8412 }
8b468c0c
HMH		 8413}
8414
8b468c0c
HMH		 8415static void hotkey_driver_event(const unsigned int scancode)
8416{
67bcae6e 8417 tpacpi_driver_event(TP_HKEY_EV_HOTKEY_BASE + scancode);
8b468c0c
HMH		 8418}
8419
7fd40029
HMH		 8420/* sysfs name ---------------------------------------------------------- */
8421static ssize_t thinkpad_acpi_pdev_name_show(struct device *dev,
8422 struct device_attribute *attr,
8423 char *buf)
8424{
e0c7dfe7 8425 return snprintf(buf, PAGE_SIZE, "%s\n", TPACPI_NAME);
7fd40029
HMH		 8426}
8427
8428static struct device_attribute dev_attr_thinkpad_acpi_pdev_name =
8429 __ATTR(name, S_IRUGO, thinkpad_acpi_pdev_name_show, NULL);
8430
8431/* --------------------------------------------------------------------- */
8432
56b6aeb0 8433/* /proc support */
94954cc6 8434static struct proc_dir_entry *proc_dir;
16663a87 8435
56b6aeb0
HMH		 8436/*
8437 * Module and infrastructure proble, init and exit handling
8438 */
1da177e4 8439
b21a15f6
HMH		 8440static int force_load;
8441
fe08bc4b 8442#ifdef CONFIG_THINKPAD_ACPI_DEBUG
a5763f22 8443static const char * __init str_supported(int is_supported)
fe08bc4b 8444{
a5763f22 8445 static char text_unsupported[] __initdata = "not supported";
fe08bc4b 8446
a5763f22 8447 return (is_supported)? &text_unsupported[4] : &text_unsupported[0];
fe08bc4b
HMH		 8448}
8449#endif /* CONFIG_THINKPAD_ACPI_DEBUG */
8450
b21a15f6
HMH		 8451static void ibm_exit(struct ibm_struct *ibm)
8452{
8453 dbg_printk(TPACPI_DBG_EXIT, "removing %s\n", ibm->name);
8454
8455 list_del_init(&ibm->all_drivers);
8456
8457 if (ibm->flags.acpi_notify_installed) {
8458 dbg_printk(TPACPI_DBG_EXIT,
8459 "%s: acpi_remove_notify_handler\n", ibm->name);
8460 BUG_ON(!ibm->acpi);
8461 acpi_remove_notify_handler(*ibm->acpi->handle,
8462 ibm->acpi->type,
8463 dispatch_acpi_notify);
8464 ibm->flags.acpi_notify_installed = 0;
b21a15f6
HMH		 8465 }
8466
8467 if (ibm->flags.proc_created) {
8468 dbg_printk(TPACPI_DBG_EXIT,
8469 "%s: remove_proc_entry\n", ibm->name);
8470 remove_proc_entry(ibm->name, proc_dir);
8471 ibm->flags.proc_created = 0;
8472 }
8473
8474 if (ibm->flags.acpi_driver_registered) {
8475 dbg_printk(TPACPI_DBG_EXIT,
8476 "%s: acpi_bus_unregister_driver\n", ibm->name);
8477 BUG_ON(!ibm->acpi);
8478 acpi_bus_unregister_driver(ibm->acpi->driver);
8479 kfree(ibm->acpi->driver);
8480 ibm->acpi->driver = NULL;
8481 ibm->flags.acpi_driver_registered = 0;
8482 }
8483
8484 if (ibm->flags.init_called && ibm->exit) {
8485 ibm->exit();
8486 ibm->flags.init_called = 0;
8487 }
8488
8489 dbg_printk(TPACPI_DBG_INIT, "finished removing %s\n", ibm->name);
8490}
f74a27d4 8491
a5763f22 8492static int __init ibm_init(struct ibm_init_struct *iibm)
1da177e4
LT		 8493{
8494 int ret;
a5763f22 8495 struct ibm_struct *ibm = iibm->data;
1da177e4
LT		 8496 struct proc_dir_entry *entry;
8497
a5763f22
HMH		 8498 BUG_ON(ibm == NULL);
8499
8500 INIT_LIST_HEAD(&ibm->all_drivers);
8501
92641177 8502 if (ibm->flags.experimental && !experimental)
1da177e4
LT		 8503 return 0;
8504
fe08bc4b
HMH		 8505 dbg_printk(TPACPI_DBG_INIT,
8506 "probing for %s\n", ibm->name);
8507
a5763f22
HMH		 8508 if (iibm->init) {
8509 ret = iibm->init(iibm);
5fba344c
HMH		 8510 if (ret > 0)
8511 return 0; /* probe failed */
8512 if (ret)
1da177e4 8513 return ret;
a5763f22 8514
92641177 8515 ibm->flags.init_called = 1;
1da177e4
LT		 8516 }
8517
8d376cd6
HMH		 8518 if (ibm->acpi) {
8519 if (ibm->acpi->hid) {
8520 ret = register_tpacpi_subdriver(ibm);
8521 if (ret)
8522 goto err_out;
8523 }
5fba344c 8524
8d376cd6
HMH		 8525 if (ibm->acpi->notify) {
8526 ret = setup_acpi_notify(ibm);
8527 if (ret == -ENODEV) {
0978e012
JP		 8528 pr_notice("disabling subdriver %s\n",
8529 ibm->name);
8d376cd6
HMH		 8530 ret = 0;
8531 goto err_out;
8532 }
8533 if (ret < 0)
8534 goto err_out;
5fba344c 8535 }
5fba344c
HMH		 8536 }
8537
fe08bc4b
HMH		 8538 dbg_printk(TPACPI_DBG_INIT,
8539 "%s installed\n", ibm->name);
8540
78f81cc4 8541 if (ibm->read) {
d161a13f 8542 umode_t mode = iibm->base_procfs_mode;
887965e6 8543
b525c06c
HMH		 8544 if (!mode)
8545 mode = S_IRUGO;
887965e6
AD		 8546 if (ibm->write)
8547 mode |= S_IWUSR;
8548 entry = proc_create_data(ibm->name, mode, proc_dir,
8549 &dispatch_proc_fops, ibm);
78f81cc4 8550 if (!entry) {
0978e012 8551 pr_err("unable to create proc entry %s\n", ibm->name);
5fba344c
HMH		 8552 ret = -ENODEV;
8553 goto err_out;
78f81cc4 8554 }
92641177 8555 ibm->flags.proc_created = 1;
78f81cc4 8556 }
1da177e4 8557
a5763f22
HMH		 8558 list_add_tail(&ibm->all_drivers, &tpacpi_all_drivers);
8559
1da177e4 8560 return 0;
5fba344c
HMH		 8561
8562err_out:
fe08bc4b
HMH		 8563 dbg_printk(TPACPI_DBG_INIT,
8564 "%s: at error exit path with result %d\n",
8565 ibm->name, ret);
8566
5fba344c
HMH		 8567 ibm_exit(ibm);
8568 return (ret < 0)? ret : 0;
1da177e4
LT		 8569}
8570
56b6aeb0
HMH		 8571/* Probing */
8572
050df107
HMH		 8573static bool __pure __init tpacpi_is_fw_digit(const char c)
8574{
8575 return (c >= '0' && c <= '9') || (c >= 'A' && c <= 'Z');
8576}
8577
8578/* Most models: xxyTkkWW (#.##c); Ancient 570/600 and -SL lacks (#.##c) */
8579static bool __pure __init tpacpi_is_valid_fw_id(const char* const s,
8580 const char t)
8581{
8582 return s && strlen(s) >= 8 &&
8583 tpacpi_is_fw_digit(s[0]) &&
8584 tpacpi_is_fw_digit(s[1]) &&
8585 s[2] == t && s[3] == 'T' &&
8586 tpacpi_is_fw_digit(s[4]) &&
b569ab39 8587 tpacpi_is_fw_digit(s[5]);
050df107
HMH		 8588}
8589
bf20e740
HMH		 8590/* returns 0 - probe ok, or < 0 - probe error.
8591 * Probe ok doesn't mean thinkpad found.
8592 * On error, kfree() cleanup on tp->* is not performed, caller must do it */
8593static int __must_check __init get_thinkpad_model_data(
8594 struct thinkpad_id_data *tp)
1da177e4 8595{
1855256c 8596 const struct dmi_device *dev = NULL;
56b6aeb0 8597 char ec_fw_string[18];
bf20e740 8598 char const *s;
1da177e4 8599
d5a2f2f1 8600 if (!tp)
bf20e740 8601 return -EINVAL;
d5a2f2f1
HMH		 8602
8603 memset(tp, 0, sizeof(*tp));
8604
8605 if (dmi_name_in_vendors("IBM"))
8606 tp->vendor = PCI_VENDOR_ID_IBM;
8607 else if (dmi_name_in_vendors("LENOVO"))
8608 tp->vendor = PCI_VENDOR_ID_LENOVO;
8609 else
bf20e740 8610 return 0;
d5a2f2f1 8611
bf20e740
HMH		 8612 s = dmi_get_system_info(DMI_BIOS_VERSION);
8613 tp->bios_version_str = kstrdup(s, GFP_KERNEL);
8614 if (s && !tp->bios_version_str)
8615 return -ENOMEM;
050df107
HMH		 8616
8617 /* Really ancient ThinkPad 240X will fail this, which is fine */
8618 if (!tpacpi_is_valid_fw_id(tp->bios_version_str, 'E'))
bf20e740 8619 return 0;
050df107 8620
d5a2f2f1
HMH		 8621 tp->bios_model = tp->bios_version_str[0]
8622 | (tp->bios_version_str[1] << 8);
050df107
HMH		 8623 tp->bios_release = (tp->bios_version_str[4] << 8)
8624 | tp->bios_version_str[5];
d5a2f2f1 8625
56b6aeb0
HMH		 8626 /*
8627 * ThinkPad T23 or newer, A31 or newer, R50e or newer,
8628 * X32 or newer, all Z series; Some models must have an
8629 * up-to-date BIOS or they will not be detected.
8630 *
8631 * See http://thinkwiki.org/wiki/List_of_DMI_IDs
8632 */
8633 while ((dev = dmi_find_device(DMI_DEV_TYPE_OEM_STRING, NULL, dev))) {
8634 if (sscanf(dev->name,
8635 "IBM ThinkPad Embedded Controller -[%17c",
8636 ec_fw_string) == 1) {
8637 ec_fw_string[sizeof(ec_fw_string) - 1] = 0;
8638 ec_fw_string[strcspn(ec_fw_string, " ]")] = 0;
d5a2f2f1
HMH		 8639
8640 tp->ec_version_str = kstrdup(ec_fw_string, GFP_KERNEL);
bf20e740
HMH		 8641 if (!tp->ec_version_str)
8642 return -ENOMEM;
050df107
HMH		 8643
8644 if (tpacpi_is_valid_fw_id(ec_fw_string, 'H')) {
8645 tp->ec_model = ec_fw_string[0]
8646 | (ec_fw_string[1] << 8);
8647 tp->ec_release = (ec_fw_string[4] << 8)
8648 | ec_fw_string[5];
8649 } else {
0978e012
JP		 8650 pr_notice("ThinkPad firmware release %s "
8651 "doesn't match the known patterns\n",
8652 ec_fw_string);
8653 pr_notice("please report this to %s\n",
8654 TPACPI_MAIL);
050df107 8655 }
d5a2f2f1 8656 break;
78f81cc4 8657 }
1da177e4 8658 }
d5a2f2f1 8659
bf20e740
HMH		 8660 s = dmi_get_system_info(DMI_PRODUCT_VERSION);
8661 if (s && !strnicmp(s, "ThinkPad", 8)) {
8662 tp->model_str = kstrdup(s, GFP_KERNEL);
8663 if (!tp->model_str)
8664 return -ENOMEM;
d5a2f2f1 8665 }
8c74adbc 8666
bf20e740
HMH		 8667 s = dmi_get_system_info(DMI_PRODUCT_NAME);
8668 tp->nummodel_str = kstrdup(s, GFP_KERNEL);
8669 if (s && !tp->nummodel_str)
8670 return -ENOMEM;
8671
8672 return 0;
1da177e4
LT		 8673}
8674
5fba344c
HMH		 8675static int __init probe_for_thinkpad(void)
8676{
8677 int is_thinkpad;
8678
8679 if (acpi_disabled)
8680 return -ENODEV;
8681
e28393c0
HMH		 8682 /* It would be dangerous to run the driver in this case */
8683 if (!tpacpi_is_ibm() && !tpacpi_is_lenovo())
8684 return -ENODEV;
8685
5fba344c
HMH		 8686 /*
8687 * Non-ancient models have better DMI tagging, but very old models
e675abaf 8688 * don't. tpacpi_is_fw_known() is a cheat to help in that case.
5fba344c 8689 */
e675abaf
HMH		 8690 is_thinkpad = (thinkpad_id.model_str != NULL) ||
8691 (thinkpad_id.ec_model != 0) ||
8692 tpacpi_is_fw_known();
5fba344c 8693
437e470c
HMH		 8694 /* The EC handler is required */
8695 tpacpi_acpi_handle_locate("ec", TPACPI_ACPI_EC_HID, &ec_handle);
5fba344c
HMH		 8696 if (!ec_handle) {
8697 if (is_thinkpad)
0978e012 8698 pr_err("Not yet supported ThinkPad detected!\n");
5fba344c
HMH		 8699 return -ENODEV;
8700 }
8701
0dcef77c
HMH		 8702 if (!is_thinkpad && !force_load)
8703 return -ENODEV;
8704
5fba344c
HMH		 8705 return 0;
8706}
8707
7a43f788
HMH		 8708static void __init thinkpad_acpi_init_banner(void)
8709{
0978e012
JP		 8710 pr_info("%s v%s\n", TPACPI_DESC, TPACPI_VERSION);
8711 pr_info("%s\n", TPACPI_URL);
7a43f788 8712
0978e012 8713 pr_info("ThinkPad BIOS %s, EC %s\n",
7a43f788
HMH		 8714 (thinkpad_id.bios_version_str) ?
8715 thinkpad_id.bios_version_str : "unknown",
8716 (thinkpad_id.ec_version_str) ?
8717 thinkpad_id.ec_version_str : "unknown");
8718
8719 BUG_ON(!thinkpad_id.vendor);
8720
8721 if (thinkpad_id.model_str)
0978e012 8722 pr_info("%s %s, model %s\n",
7a43f788
HMH		 8723 (thinkpad_id.vendor == PCI_VENDOR_ID_IBM) ?
8724 "IBM" : ((thinkpad_id.vendor ==
8725 PCI_VENDOR_ID_LENOVO) ?
8726 "Lenovo" : "Unknown vendor"),
8727 thinkpad_id.model_str,
8728 (thinkpad_id.nummodel_str) ?
8729 thinkpad_id.nummodel_str : "unknown");
8730}
5fba344c 8731
56b6aeb0 8732/* Module init, exit, parameters */
1da177e4 8733
a5763f22
HMH		 8734static struct ibm_init_struct ibms_init[] __initdata = {
8735 {
a5763f22
HMH		 8736 .data = &thinkpad_acpi_driver_data,
8737 },
8738 {
8739 .init = hotkey_init,
8740 .data = &hotkey_driver_data,
8741 },
8742 {
8743 .init = bluetooth_init,
8744 .data = &bluetooth_driver_data,
8745 },
8746 {
8747 .init = wan_init,
8748 .data = &wan_driver_data,
8749 },
0045c0aa
HMH		 8750 {
8751 .init = uwb_init,
8752 .data = &uwb_driver_data,
8753 },
d7c1d17d 8754#ifdef CONFIG_THINKPAD_ACPI_VIDEO
a5763f22
HMH		 8755 {
8756 .init = video_init,
b525c06c 8757 .base_procfs_mode = S_IRUSR,
a5763f22
HMH		 8758 .data = &video_driver_data,
8759 },
d7c1d17d 8760#endif
a5763f22
HMH		 8761 {
8762 .init = light_init,
8763 .data = &light_driver_data,
8764 },
a5763f22
HMH		 8765 {
8766 .init = cmos_init,
8767 .data = &cmos_driver_data,
8768 },
8769 {
8770 .init = led_init,
8771 .data = &led_driver_data,
8772 },
8773 {
8774 .init = beep_init,
8775 .data = &beep_driver_data,
8776 },
8777 {
8778 .init = thermal_init,
8779 .data = &thermal_driver_data,
8780 },
a5763f22
HMH		 8781 {
8782 .init = brightness_init,
8783 .data = &brightness_driver_data,
8784 },
8785 {
329e4e18 8786 .init = volume_init,
a5763f22
HMH		 8787 .data = &volume_driver_data,
8788 },
8789 {
8790 .init = fan_init,
8791 .data = &fan_driver_data,
8792 },
8793};
8794
3945ac36 8795static int __init set_ibm_param(const char *val, struct kernel_param *kp)
1da177e4
LT		 8796{
8797 unsigned int i;
a5763f22 8798 struct ibm_struct *ibm;
1da177e4 8799
59f91ff1
HMH		 8800 if (!kp || !kp->name || !val)
8801 return -EINVAL;
8802
a5763f22
HMH		 8803 for (i = 0; i < ARRAY_SIZE(ibms_init); i++) {
8804 ibm = ibms_init[i].data;
59f91ff1
HMH		 8805 WARN_ON(ibm == NULL);
8806
8807 if (!ibm || !ibm->name)
8808 continue;
a5763f22
HMH		 8809
8810 if (strcmp(ibm->name, kp->name) == 0 && ibm->write) {
8811 if (strlen(val) > sizeof(ibms_init[i].param) - 2)
78f81cc4 8812 return -ENOSPC;
a5763f22
HMH		 8813 strcpy(ibms_init[i].param, val);
8814 strcat(ibms_init[i].param, ",");
78f81cc4
BD		 8815 return 0;
8816 }
a5763f22 8817 }
1da177e4 8818
1da177e4
LT		 8819 return -EINVAL;
8820}
8821
b09c7225 8822module_param(experimental, int, 0444);
f68080f8 8823MODULE_PARM_DESC(experimental,
35ff8b9f 8824 "Enables experimental features when non-zero");
56b6aeb0 8825
132ce091 8826module_param_named(debug, dbg_level, uint, 0);
f68080f8 8827MODULE_PARM_DESC(debug, "Sets debug level bit-mask");
132ce091 8828
b09c7225 8829module_param(force_load, bool, 0444);
f68080f8 8830MODULE_PARM_DESC(force_load,
35ff8b9f
HMH		 8831 "Attempts to load the driver even on a "
8832 "mis-identified ThinkPad when true");
0dcef77c 8833
b09c7225 8834module_param_named(fan_control, fan_control_allowed, bool, 0444);
f68080f8 8835MODULE_PARM_DESC(fan_control,
35ff8b9f 8836 "Enables setting fan parameters features when true");
ecf2a80a 8837
b09c7225 8838module_param_named(brightness_mode, brightness_mode, uint, 0444);
f68080f8 8839MODULE_PARM_DESC(brightness_mode,
35ff8b9f 8840 "Selects brightness control strategy: "
0e501834 8841 "0=auto, 1=EC, 2=UCMS, 3=EC+NVRAM");
24d3b774 8842
b09c7225 8843module_param(brightness_enable, uint, 0444);
f68080f8 8844MODULE_PARM_DESC(brightness_enable,
35ff8b9f 8845 "Enables backlight control when 1, disables when 0");
87cc537a 8846
b09c7225 8847module_param(hotkey_report_mode, uint, 0444);
f68080f8 8848MODULE_PARM_DESC(hotkey_report_mode,
35ff8b9f
HMH		 8849 "used for backwards compatibility with userspace, "
8850 "see documentation");
ff80f137 8851
ff850c33 8852#ifdef CONFIG_THINKPAD_ACPI_ALSA_SUPPORT
329e4e18
HMH		 8853module_param_named(volume_mode, volume_mode, uint, 0444);
8854MODULE_PARM_DESC(volume_mode,
8855 "Selects volume control strategy: "
8856 "0=auto, 1=EC, 2=N/A, 3=EC+NVRAM");
8857
a112ceee
HMH		 8858module_param_named(volume_capabilities, volume_capabilities, uint, 0444);
8859MODULE_PARM_DESC(volume_capabilities,
8860 "Selects the mixer capabilites: "
8861 "0=auto, 1=volume and mute, 2=mute only");
8862
c7ac6291
HMH		 8863module_param_named(volume_control, volume_control_allowed, bool, 0444);
8864MODULE_PARM_DESC(volume_control,
8865 "Enables software override for the console audio "
8866 "control when true");
8867
0d204c34
HMH		 8868/* ALSA module API parameters */
8869module_param_named(index, alsa_index, int, 0444);
8870MODULE_PARM_DESC(index, "ALSA index for the ACPI EC Mixer");
8871module_param_named(id, alsa_id, charp, 0444);
8872MODULE_PARM_DESC(id, "ALSA id for the ACPI EC Mixer");
8873module_param_named(enable, alsa_enable, bool, 0444);
8874MODULE_PARM_DESC(enable, "Enable the ALSA interface for the ACPI EC Mixer");
ff850c33 8875#endif /* CONFIG_THINKPAD_ACPI_ALSA_SUPPORT */
0d204c34 8876
e0c7dfe7 8877#define TPACPI_PARAM(feature) \
f68080f8 8878 module_param_call(feature, set_ibm_param, NULL, NULL, 0); \
cbb14842 8879 MODULE_PARM_DESC(feature, "Simulates thinkpad-acpi procfs command " \
35ff8b9f 8880 "at module load, see documentation")
1da177e4 8881
e0c7dfe7
HMH		 8882TPACPI_PARAM(hotkey);
8883TPACPI_PARAM(bluetooth);
8884TPACPI_PARAM(video);
8885TPACPI_PARAM(light);
e0c7dfe7
HMH		 8886TPACPI_PARAM(cmos);
8887TPACPI_PARAM(led);
8888TPACPI_PARAM(beep);
e0c7dfe7
HMH		 8889TPACPI_PARAM(brightness);
8890TPACPI_PARAM(volume);
8891TPACPI_PARAM(fan);
78f81cc4 8892
a73f3091 8893#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
b09c7225 8894module_param(dbg_wlswemul, uint, 0444);
a73f3091
HMH		 8895MODULE_PARM_DESC(dbg_wlswemul, "Enables WLSW emulation");
8896module_param_named(wlsw_state, tpacpi_wlsw_emulstate, bool, 0);
8897MODULE_PARM_DESC(wlsw_state,
8898 "Initial state of the emulated WLSW switch");
8899
b09c7225 8900module_param(dbg_bluetoothemul, uint, 0444);
a73f3091
HMH		 8901MODULE_PARM_DESC(dbg_bluetoothemul, "Enables bluetooth switch emulation");
8902module_param_named(bluetooth_state, tpacpi_bluetooth_emulstate, bool, 0);
8903MODULE_PARM_DESC(bluetooth_state,
8904 "Initial state of the emulated bluetooth switch");
8905
b09c7225 8906module_param(dbg_wwanemul, uint, 0444);
a73f3091
HMH		 8907MODULE_PARM_DESC(dbg_wwanemul, "Enables WWAN switch emulation");
8908module_param_named(wwan_state, tpacpi_wwan_emulstate, bool, 0);
8909MODULE_PARM_DESC(wwan_state,
8910 "Initial state of the emulated WWAN switch");
0045c0aa 8911
b09c7225 8912module_param(dbg_uwbemul, uint, 0444);
0045c0aa
HMH		 8913MODULE_PARM_DESC(dbg_uwbemul, "Enables UWB switch emulation");
8914module_param_named(uwb_state, tpacpi_uwb_emulstate, bool, 0);
8915MODULE_PARM_DESC(uwb_state,
8916 "Initial state of the emulated UWB switch");
a73f3091
HMH		 8917#endif
8918
b21a15f6
HMH		 8919static void thinkpad_acpi_module_exit(void)
8920{
8921 struct ibm_struct *ibm, *itmp;
8922
8923 tpacpi_lifecycle = TPACPI_LIFE_EXITING;
8924
8925 list_for_each_entry_safe_reverse(ibm, itmp,
8926 &tpacpi_all_drivers,
8927 all_drivers) {
8928 ibm_exit(ibm);
8929 }
8930
8931 dbg_printk(TPACPI_DBG_INIT, "finished subdriver exit path...\n");
8932
8933 if (tpacpi_inputdev) {
8934 if (tp_features.input_device_registered)
8935 input_unregister_device(tpacpi_inputdev);
8936 else
8937 input_free_device(tpacpi_inputdev);
8938 }
8939
8940 if (tpacpi_hwmon)
8941 hwmon_device_unregister(tpacpi_hwmon);
8942
8943 if (tp_features.sensors_pdev_attrs_registered)
8944 device_remove_file(&tpacpi_sensors_pdev->dev,
8945 &dev_attr_thinkpad_acpi_pdev_name);
8946 if (tpacpi_sensors_pdev)
8947 platform_device_unregister(tpacpi_sensors_pdev);
8948 if (tpacpi_pdev)
8949 platform_device_unregister(tpacpi_pdev);
8950
8951 if (tp_features.sensors_pdrv_attrs_registered)
8952 tpacpi_remove_driver_attributes(&tpacpi_hwmon_pdriver.driver);
8953 if (tp_features.platform_drv_attrs_registered)
8954 tpacpi_remove_driver_attributes(&tpacpi_pdriver.driver);
8955
8956 if (tp_features.sensors_pdrv_registered)
8957 platform_driver_unregister(&tpacpi_hwmon_pdriver);
8958
8959 if (tp_features.platform_drv_registered)
8960 platform_driver_unregister(&tpacpi_pdriver);
8961
8962 if (proc_dir)
e0c7dfe7 8963 remove_proc_entry(TPACPI_PROC_DIR, acpi_root_dir);
b21a15f6 8964
e0e3c061
HMH		 8965 if (tpacpi_wq)
8966 destroy_workqueue(tpacpi_wq);
8967
b21a15f6
HMH		 8968 kfree(thinkpad_id.bios_version_str);
8969 kfree(thinkpad_id.ec_version_str);
8970 kfree(thinkpad_id.model_str);
8971}
8972
f74a27d4 8973
1def7115 8974static int __init thinkpad_acpi_module_init(void)
1da177e4
LT		 8975{
8976 int ret, i;
8977
8fef502e
HMH		 8978 tpacpi_lifecycle = TPACPI_LIFE_INIT;
8979
ff80f137
HMH		 8980 /* Parameter checking */
8981 if (hotkey_report_mode > 2)
8982 return -EINVAL;
8983
54ae1501 8984 /* Driver-level probe */
d5a2f2f1 8985
bf20e740
HMH		 8986 ret = get_thinkpad_model_data(&thinkpad_id);
8987 if (ret) {
0978e012 8988 pr_err("unable to get DMI data: %d\n", ret);
bf20e740
HMH		 8989 thinkpad_acpi_module_exit();
8990 return ret;
8991 }
5fba344c 8992 ret = probe_for_thinkpad();
d5a2f2f1
HMH		 8993 if (ret) {
8994 thinkpad_acpi_module_exit();
5fba344c 8995 return ret;
d5a2f2f1 8996 }
1da177e4 8997
54ae1501 8998 /* Driver initialization */
d5a2f2f1 8999
7a43f788
HMH		 9000 thinkpad_acpi_init_banner();
9001 tpacpi_check_outdated_fw();
9002
e0c7dfe7
HMH		 9003 TPACPI_ACPIHANDLE_INIT(ecrd);
9004 TPACPI_ACPIHANDLE_INIT(ecwr);
1da177e4 9005
e0e3c061
HMH		 9006 tpacpi_wq = create_singlethread_workqueue(TPACPI_WORKQUEUE_NAME);
9007 if (!tpacpi_wq) {
9008 thinkpad_acpi_module_exit();
9009 return -ENOMEM;
9010 }
9011
e0c7dfe7 9012 proc_dir = proc_mkdir(TPACPI_PROC_DIR, acpi_root_dir);
1da177e4 9013 if (!proc_dir) {
0978e012 9014 pr_err("unable to create proc dir " TPACPI_PROC_DIR "\n");
1def7115 9015 thinkpad_acpi_module_exit();
1da177e4
LT		 9016 return -ENODEV;
9017 }
78f81cc4 9018
54ae1501
HMH		 9019 ret = platform_driver_register(&tpacpi_pdriver);
9020 if (ret) {
0978e012 9021 pr_err("unable to register main platform driver\n");
54ae1501
HMH		 9022 thinkpad_acpi_module_exit();
9023 return ret;
9024 }
ac36393d
HMH		 9025 tp_features.platform_drv_registered = 1;
9026
7fd40029
HMH		 9027 ret = platform_driver_register(&tpacpi_hwmon_pdriver);
9028 if (ret) {
0978e012 9029 pr_err("unable to register hwmon platform driver\n");
7fd40029
HMH		 9030 thinkpad_acpi_module_exit();
9031 return ret;
9032 }
9033 tp_features.sensors_pdrv_registered = 1;
9034
176750d6 9035 ret = tpacpi_create_driver_attributes(&tpacpi_pdriver.driver);
2369cc94
HMH		 9036 if (!ret) {
9037 tp_features.platform_drv_attrs_registered = 1;
35ff8b9f
HMH		 9038 ret = tpacpi_create_driver_attributes(
9039 &tpacpi_hwmon_pdriver.driver);
2369cc94 9040 }
176750d6 9041 if (ret) {
0978e012 9042 pr_err("unable to create sysfs driver attributes\n");
176750d6
HMH		 9043 thinkpad_acpi_module_exit();
9044 return ret;
9045 }
2369cc94 9046 tp_features.sensors_pdrv_attrs_registered = 1;
176750d6 9047
54ae1501
HMH		 9048
9049 /* Device initialization */
e0c7dfe7 9050 tpacpi_pdev = platform_device_register_simple(TPACPI_DRVR_NAME, -1,
54ae1501
HMH		 9051 NULL, 0);
9052 if (IS_ERR(tpacpi_pdev)) {
9053 ret = PTR_ERR(tpacpi_pdev);
9054 tpacpi_pdev = NULL;
0978e012 9055 pr_err("unable to register platform device\n");
54ae1501
HMH		 9056 thinkpad_acpi_module_exit();
9057 return ret;
9058 }
7fd40029 9059 tpacpi_sensors_pdev = platform_device_register_simple(
35ff8b9f
HMH		 9060 TPACPI_HWMON_DRVR_NAME,
9061 -1, NULL, 0);
7fd40029
HMH		 9062 if (IS_ERR(tpacpi_sensors_pdev)) {
9063 ret = PTR_ERR(tpacpi_sensors_pdev);
9064 tpacpi_sensors_pdev = NULL;
0978e012 9065 pr_err("unable to register hwmon platform device\n");
7fd40029
HMH		 9066 thinkpad_acpi_module_exit();
9067 return ret;
9068 }
9069 ret = device_create_file(&tpacpi_sensors_pdev->dev,
9070 &dev_attr_thinkpad_acpi_pdev_name);
9071 if (ret) {
0978e012 9072 pr_err("unable to create sysfs hwmon device attributes\n");
7fd40029
HMH		 9073 thinkpad_acpi_module_exit();
9074 return ret;
9075 }
9076 tp_features.sensors_pdev_attrs_registered = 1;
9077 tpacpi_hwmon = hwmon_device_register(&tpacpi_sensors_pdev->dev);
54ae1501
HMH		 9078 if (IS_ERR(tpacpi_hwmon)) {
9079 ret = PTR_ERR(tpacpi_hwmon);
9080 tpacpi_hwmon = NULL;
0978e012 9081 pr_err("unable to register hwmon device\n");
54ae1501
HMH		 9082 thinkpad_acpi_module_exit();
9083 return ret;
9084 }
8523ed6f 9085 mutex_init(&tpacpi_inputdev_send_mutex);
7f5d1cd6
HMH		 9086 tpacpi_inputdev = input_allocate_device();
9087 if (!tpacpi_inputdev) {
0978e012 9088 pr_err("unable to allocate input device\n");
7f5d1cd6
HMH		 9089 thinkpad_acpi_module_exit();
9090 return -ENOMEM;
9091 } else {
9092 /* Prepare input device, but don't register */
9093 tpacpi_inputdev->name = "ThinkPad Extra Buttons";
e0c7dfe7 9094 tpacpi_inputdev->phys = TPACPI_DRVR_NAME "/input0";
7f5d1cd6 9095 tpacpi_inputdev->id.bustype = BUS_HOST;
e28393c0 9096 tpacpi_inputdev->id.vendor = thinkpad_id.vendor;
7f5d1cd6
HMH		 9097 tpacpi_inputdev->id.product = TPACPI_HKEY_INPUT_PRODUCT;
9098 tpacpi_inputdev->id.version = TPACPI_HKEY_INPUT_VERSION;
d112ef95 9099 tpacpi_inputdev->dev.parent = &tpacpi_pdev->dev;
7f5d1cd6 9100 }
77775838
HMH		 9101
9102 /* Init subdriver dependencies */
9103 tpacpi_detect_brightness_capabilities();
9104
9105 /* Init subdrivers */
a5763f22
HMH		 9106 for (i = 0; i < ARRAY_SIZE(ibms_init); i++) {
9107 ret = ibm_init(&ibms_init[i]);
9108 if (ret >= 0 && *ibms_init[i].param)
9109 ret = ibms_init[i].data->write(ibms_init[i].param);
1da177e4 9110 if (ret < 0) {
1def7115 9111 thinkpad_acpi_module_exit();
1da177e4
LT		 9112 return ret;
9113 }
9114 }
b589ea4c
HMH		 9115
9116 tpacpi_lifecycle = TPACPI_LIFE_RUNNING;
9117
7f5d1cd6
HMH		 9118 ret = input_register_device(tpacpi_inputdev);
9119 if (ret < 0) {
0978e012 9120 pr_err("unable to register input device\n");
7f5d1cd6
HMH		 9121 thinkpad_acpi_module_exit();
9122 return ret;
9123 } else {
9124 tp_features.input_device_registered = 1;
9125 }
1da177e4
LT		 9126
9127 return 0;
9128}
9129
95e57ab2
HMH		 9130MODULE_ALIAS(TPACPI_DRVR_SHORTNAME);
9131
922fe097
HMH		 9132/*
9133 * This will autoload the driver in almost every ThinkPad
9134 * in widespread use.
9135 *
9136 * Only _VERY_ old models, like the 240, 240x and 570 lack
9137 * the HKEY event interface.
9138 */
9139MODULE_DEVICE_TABLE(acpi, ibm_htk_device_ids);
9140
f68080f8
HMH		 9141/*
9142 * DMI matching for module autoloading
9143 *
9144 * See http://thinkwiki.org/wiki/List_of_DMI_IDs
9145 * See http://thinkwiki.org/wiki/BIOS_Upgrade_Downloads
9146 *
9147 * Only models listed in thinkwiki will be supported, so add yours
9148 * if it is not there yet.
9149 */
9150#define IBM_BIOS_MODULE_ALIAS(__type) \
b36a50f9 9151 MODULE_ALIAS("dmi:bvnIBM:bvr" __type "ET??WW*")
f68080f8 9152
f68080f8
HMH		 9153/* Ancient thinkpad BIOSes have to be identified by
9154 * BIOS type or model number, and there are far less
9155 * BIOS types than model numbers... */
922fe097 9156IBM_BIOS_MODULE_ALIAS("I[MU]"); /* 570, 570e */
f68080f8 9157
f68f53a2
HMH		 9158MODULE_AUTHOR("Borislav Deianov <borislav@users.sf.net>");
9159MODULE_AUTHOR("Henrique de Moraes Holschuh <hmh@hmh.eng.br>");
e0c7dfe7
HMH		 9160MODULE_DESCRIPTION(TPACPI_DESC);
9161MODULE_VERSION(TPACPI_VERSION);
f68080f8
HMH		 9162MODULE_LICENSE("GPL");
9163
1def7115
HMH		 9164module_init(thinkpad_acpi_module_init);
9165module_exit(thinkpad_acpi_module_exit);
Linux kernel - Deliverables
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