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Merge tag 'vfs-6.7.misc' of gitolite.kernel.org:pub/scm/linux/kernel/git/vfs/vfs
[linux-block.git] / drivers / platform / x86 / thinkpad_acpi.c
CommitLineData
16216333 1// SPDX-License-Identifier: GPL-2.0-or-later
1da177e4 2/*
643f12db 3 * thinkpad_acpi.c - ThinkPad ACPI Extras
1da177e4 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>
78f81cc4
BD		 7 */
8
0978e012
JP		 9#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
10
2801b968 11#define TPACPI_VERSION "0.26"
6b99e356 12#define TPACPI_SYSFS_VERSION 0x030000
78f81cc4
BD		 13
14/*
1da177e4 15 * Changelog:
4b45cc07
HMH		 16 * 2007-10-20 changelog trimmed down
17 *
643f12db
HMH		 18 * 2007-03-27 0.14 renamed to thinkpad_acpi and moved to
19 * drivers/misc.
f9ff43a6
HMH		 20 *
21 * 2006-11-22 0.13 new maintainer
22 * changelog now lives in git commit history, and will
23 * not be updated further in-file.
837ca6dd 24 *
78f81cc4
BD		 25 * 2005-03-17 0.11 support for 600e, 770x
26 * thanks to Jamie Lentin <lentinj@dial.pipex.com>
4b45cc07
HMH		 27 *
28 * 2005-01-16 0.9 use MODULE_VERSION
78f81cc4
BD		 29 * thanks to Henrik Brix Andersen <brix@gentoo.org>
30 * fix parameter passing on module loading
31 * thanks to Rusty Russell <rusty@rustcorp.com.au>
32 * thanks to Jim Radford <radford@blackbean.org>
33 * 2004-11-08 0.8 fix init error case, don't return from a macro
34 * thanks to Chris Wright <chrisw@osdl.org>
1da177e4
LT		 35 */
36
3c40a71c 37#include <linux/acpi.h>
0c78039f 38#include <linux/backlight.h>
2801b968 39#include <linux/bitops.h>
3c40a71c
AS		 40#include <linux/delay.h>
41#include <linux/dmi.h>
0c78039f 42#include <linux/fb.h>
3c40a71c 43#include <linux/freezer.h>
0c78039f
HMH		 44#include <linux/hwmon.h>
45#include <linux/hwmon-sysfs.h>
3c40a71c 46#include <linux/init.h>
0c78039f 47#include <linux/input.h>
0c78039f 48#include <linux/jiffies.h>
3c40a71c
AS		 49#include <linux/kernel.h>
50#include <linux/kthread.h>
51#include <linux/leds.h>
52#include <linux/list.h>
38831eaf 53#include <linux/lockdep.h>
3c40a71c
AS		 54#include <linux/module.h>
55#include <linux/mutex.h>
56#include <linux/nvram.h>
f7db839f 57#include <linux/pci.h>
3c40a71c 58#include <linux/platform_device.h>
c3bfcd4c 59#include <linux/platform_profile.h>
3c40a71c
AS		 60#include <linux/power_supply.h>
61#include <linux/proc_fs.h>
62#include <linux/rfkill.h>
63#include <linux/sched.h>
64#include <linux/sched/signal.h>
65#include <linux/seq_file.h>
66#include <linux/slab.h>
67#include <linux/string.h>
664607f5 68#include <linux/string_helpers.h>
3c40a71c
AS		 69#include <linux/sysfs.h>
70#include <linux/types.h>
7c0f6ba6 71#include <linux/uaccess.h>
3c40a71c
AS		 72#include <linux/workqueue.h>
73
2801b968 74#include <acpi/battery.h>
b33c6ce5 75#include <acpi/video.h>
3c40a71c 76
f809891e 77#include <drm/drm_privacy_screen_driver.h>
3c40a71c
AS		 78
79#include <sound/control.h>
80#include <sound/core.h>
81#include <sound/initval.h>
82
153cca9c 83#include "dual_accel_detect.h"
0c78039f
HMH		 84
85/* ThinkPad CMOS commands */
86#define TP_CMOS_VOLUME_DOWN 0
87#define TP_CMOS_VOLUME_UP 1
88#define TP_CMOS_VOLUME_MUTE 2
89#define TP_CMOS_BRIGHTNESS_UP 4
90#define TP_CMOS_BRIGHTNESS_DOWN 5
4fa6811b
HMH		 91#define TP_CMOS_THINKLIGHT_ON 12
92#define TP_CMOS_THINKLIGHT_OFF 13
0c78039f
HMH		 93
94/* NVRAM Addresses */
95enum tp_nvram_addr {
96 TP_NVRAM_ADDR_HK2 = 0x57,
97 TP_NVRAM_ADDR_THINKLIGHT = 0x58,
98 TP_NVRAM_ADDR_VIDEO = 0x59,
99 TP_NVRAM_ADDR_BRIGHTNESS = 0x5e,
100 TP_NVRAM_ADDR_MIXER = 0x60,
101};
102
103/* NVRAM bit masks */
104enum {
105 TP_NVRAM_MASK_HKT_THINKPAD = 0x08,
106 TP_NVRAM_MASK_HKT_ZOOM = 0x20,
107 TP_NVRAM_MASK_HKT_DISPLAY = 0x40,
108 TP_NVRAM_MASK_HKT_HIBERNATE = 0x80,
109 TP_NVRAM_MASK_THINKLIGHT = 0x10,
110 TP_NVRAM_MASK_HKT_DISPEXPND = 0x30,
111 TP_NVRAM_MASK_HKT_BRIGHTNESS = 0x20,
112 TP_NVRAM_MASK_LEVEL_BRIGHTNESS = 0x0f,
113 TP_NVRAM_POS_LEVEL_BRIGHTNESS = 0,
114 TP_NVRAM_MASK_MUTE = 0x40,
115 TP_NVRAM_MASK_HKT_VOLUME = 0x80,
116 TP_NVRAM_MASK_LEVEL_VOLUME = 0x0f,
117 TP_NVRAM_POS_LEVEL_VOLUME = 0,
118};
119
5d756db9
HMH		 120/* Misc NVRAM-related */
121enum {
122 TP_NVRAM_LEVEL_VOLUME_MAX = 14,
123};
124
b21a15f6 125/* ACPI HIDs */
9fbdaeb4
MI		 126#define TPACPI_ACPI_IBM_HKEY_HID "IBM0068"
127#define TPACPI_ACPI_LENOVO_HKEY_HID "LEN0068"
a3c42a46 128#define TPACPI_ACPI_LENOVO_HKEY_V2_HID "LEN0268"
437e470c 129#define TPACPI_ACPI_EC_HID "PNP0C09"
b21a15f6
HMH		 130
131/* Input IDs */
132#define TPACPI_HKEY_INPUT_PRODUCT 0x5054 /* "TP" */
133#define TPACPI_HKEY_INPUT_VERSION 0x4101
134
153f8220
HMH		 135/* ACPI \WGSV commands */
136enum {
137 TP_ACPI_WGSV_GET_STATE = 0x01, /* Get state information */
138 TP_ACPI_WGSV_PWR_ON_ON_RESUME = 0x02, /* Resume WWAN powered on */
139 TP_ACPI_WGSV_PWR_OFF_ON_RESUME = 0x03, /* Resume WWAN powered off */
140 TP_ACPI_WGSV_SAVE_STATE = 0x04, /* Save state for S4/S5 */
141};
142
143/* TP_ACPI_WGSV_GET_STATE bits */
144enum {
145 TP_ACPI_WGSV_STATE_WWANEXIST = 0x0001, /* WWAN hw available */
146 TP_ACPI_WGSV_STATE_WWANPWR = 0x0002, /* WWAN radio enabled */
147 TP_ACPI_WGSV_STATE_WWANPWRRES = 0x0004, /* WWAN state at resume */
148 TP_ACPI_WGSV_STATE_WWANBIOSOFF = 0x0008, /* WWAN disabled in BIOS */
149 TP_ACPI_WGSV_STATE_BLTHEXIST = 0x0001, /* BLTH hw available */
150 TP_ACPI_WGSV_STATE_BLTHPWR = 0x0002, /* BLTH radio enabled */
151 TP_ACPI_WGSV_STATE_BLTHPWRRES = 0x0004, /* BLTH state at resume */
152 TP_ACPI_WGSV_STATE_BLTHBIOSOFF = 0x0008, /* BLTH disabled in BIOS */
153 TP_ACPI_WGSV_STATE_UWBEXIST = 0x0010, /* UWB hw available */
154 TP_ACPI_WGSV_STATE_UWBPWR = 0x0020, /* UWB radio enabled */
155};
b21a15f6 156
67bcae6e
HMH		 157/* HKEY events */
158enum tpacpi_hkey_event_t {
159 /* Hotkey-related */
160 TP_HKEY_EV_HOTKEY_BASE = 0x1001, /* first hotkey (FN+F1) */
161 TP_HKEY_EV_BRGHT_UP = 0x1010, /* Brightness up */
162 TP_HKEY_EV_BRGHT_DOWN = 0x1011, /* Brightness down */
c685e20d 163 TP_HKEY_EV_KBD_LIGHT = 0x1012, /* Thinklight/kbd backlight */
67bcae6e
HMH		 164 TP_HKEY_EV_VOL_UP = 0x1015, /* Volume up or unmute */
165 TP_HKEY_EV_VOL_DOWN = 0x1016, /* Volume down or unmute */
166 TP_HKEY_EV_VOL_MUTE = 0x1017, /* Mixer output mute */
f809891e 167 TP_HKEY_EV_PRIVACYGUARD_TOGGLE = 0x130f, /* Toggle priv.guard on/off */
867eb713 168 TP_HKEY_EV_AMT_TOGGLE = 0x131a, /* Toggle AMT on/off */
67bcae6e
HMH		 169
170 /* Reasons for waking up from S3/S4 */
171 TP_HKEY_EV_WKUP_S3_UNDOCK = 0x2304, /* undock requested, S3 */
172 TP_HKEY_EV_WKUP_S4_UNDOCK = 0x2404, /* undock requested, S4 */
173 TP_HKEY_EV_WKUP_S3_BAYEJ = 0x2305, /* bay ejection req, S3 */
174 TP_HKEY_EV_WKUP_S4_BAYEJ = 0x2405, /* bay ejection req, S4 */
175 TP_HKEY_EV_WKUP_S3_BATLOW = 0x2313, /* battery empty, S3 */
176 TP_HKEY_EV_WKUP_S4_BATLOW = 0x2413, /* battery empty, S4 */
177
178 /* Auto-sleep after eject request */
179 TP_HKEY_EV_BAYEJ_ACK = 0x3003, /* bay ejection complete */
180 TP_HKEY_EV_UNDOCK_ACK = 0x4003, /* undock complete */
181
182 /* Misc bay events */
183 TP_HKEY_EV_OPTDRV_EJ = 0x3006, /* opt. drive tray ejected */
a50245af
HMH		 184 TP_HKEY_EV_HOTPLUG_DOCK = 0x4010, /* docked into hotplug dock
185 or port replicator */
186 TP_HKEY_EV_HOTPLUG_UNDOCK = 0x4011, /* undocked from hotplug
187 dock or port replicator */
0a053f01
AK		 188 /*
189 * Thinkpad X1 Tablet series devices emit 0x4012 and 0x4013
190 * when keyboard cover is attached, detached or folded onto the back
191 */
192 TP_HKEY_EV_KBD_COVER_ATTACH = 0x4012, /* keyboard cover attached */
193 TP_HKEY_EV_KBD_COVER_DETACH = 0x4013, /* keyboard cover detached or folded back */
67bcae6e
HMH		 194
195 /* User-interface events */
196 TP_HKEY_EV_LID_CLOSE = 0x5001, /* laptop lid closed */
197 TP_HKEY_EV_LID_OPEN = 0x5002, /* laptop lid opened */
198 TP_HKEY_EV_TABLET_TABLET = 0x5009, /* tablet swivel up */
199 TP_HKEY_EV_TABLET_NOTEBOOK = 0x500a, /* tablet swivel down */
b03f4d49
L		 200 TP_HKEY_EV_TABLET_CHANGED = 0x60c0, /* X1 Yoga (2016):
201 * enter/leave tablet mode
202 */
67bcae6e
HMH		 203 TP_HKEY_EV_PEN_INSERTED = 0x500b, /* tablet pen inserted */
204 TP_HKEY_EV_PEN_REMOVED = 0x500c, /* tablet pen removed */
205 TP_HKEY_EV_BRGHT_CHANGED = 0x5010, /* backlight control event */
206
2d43f671
HMH		 207 /* Key-related user-interface events */
208 TP_HKEY_EV_KEY_NUMLOCK = 0x6000, /* NumLock key pressed */
209 TP_HKEY_EV_KEY_FN = 0x6005, /* Fn key pressed? E420 */
67ab6248 210 TP_HKEY_EV_KEY_FN_ESC = 0x6060, /* Fn+Esc key pressed X240 */
2d43f671 211
67bcae6e
HMH		 212 /* Thermal events */
213 TP_HKEY_EV_ALARM_BAT_HOT = 0x6011, /* battery too hot */
214 TP_HKEY_EV_ALARM_BAT_XHOT = 0x6012, /* battery critically hot */
215 TP_HKEY_EV_ALARM_SENSOR_HOT = 0x6021, /* sensor too hot */
216 TP_HKEY_EV_ALARM_SENSOR_XHOT = 0x6022, /* sensor critically hot */
6e6bc5f6
HMH		 217 TP_HKEY_EV_THM_TABLE_CHANGED = 0x6030, /* windows; thermal table changed */
218 TP_HKEY_EV_THM_CSM_COMPLETED = 0x6032, /* windows; thermal control set
219 * command completed. Related to
220 * AML DYTC */
221 TP_HKEY_EV_THM_TRANSFM_CHANGED = 0x60F0, /* windows; thermal transformation
222 * changed. Related to AML GMTS */
67bcae6e 223
6f62bc3e
RH		 224 /* AC-related events */
225 TP_HKEY_EV_AC_CHANGED = 0x6040, /* AC status changed */
2d43f671 226
587d8628
DH		 227 /* Further user-interface events */
228 TP_HKEY_EV_PALM_DETECTED = 0x60b0, /* palm hoveres keyboard */
229 TP_HKEY_EV_PALM_UNDETECTED = 0x60b1, /* palm removed */
230
67bcae6e
HMH		 231 /* Misc */
232 TP_HKEY_EV_RFKILL_CHANGED = 0x7000, /* rfkill switch changed */
233};
234
b21a15f6
HMH		 235/****************************************************************************
236 * Main driver
237 */
238
e0c7dfe7
HMH		 239#define TPACPI_NAME "thinkpad"
240#define TPACPI_DESC "ThinkPad ACPI Extras"
241#define TPACPI_FILE TPACPI_NAME "_acpi"
242#define TPACPI_URL "http://ibm-acpi.sf.net/"
243#define TPACPI_MAIL "ibm-acpi-devel@lists.sourceforge.net"
b21a15f6 244
e0c7dfe7
HMH		 245#define TPACPI_PROC_DIR "ibm"
246#define TPACPI_ACPI_EVENT_PREFIX "ibm"
247#define TPACPI_DRVR_NAME TPACPI_FILE
95e57ab2 248#define TPACPI_DRVR_SHORTNAME "tpacpi"
e0c7dfe7 249#define TPACPI_HWMON_DRVR_NAME TPACPI_NAME "_hwmon"
b21a15f6 250
95e57ab2 251#define TPACPI_NVRAM_KTHREAD_NAME "ktpacpi_nvramd"
e0e3c061 252#define TPACPI_WORKQUEUE_NAME "ktpacpid"
95e57ab2 253
e0c7dfe7 254#define TPACPI_MAX_ACPI_ARGS 3
b21a15f6 255
7ff8d62f 256/* Debugging printk groups */
0c78039f 257#define TPACPI_DBG_ALL 0xffff
73a94d86 258#define TPACPI_DBG_DISCLOSETASK 0x8000
0c78039f
HMH		 259#define TPACPI_DBG_INIT 0x0001
260#define TPACPI_DBG_EXIT 0x0002
bee4cd9b 261#define TPACPI_DBG_RFKILL 0x0004
56e2c200 262#define TPACPI_DBG_HKEY 0x0008
74a60c0f 263#define TPACPI_DBG_FAN 0x0010
0e501834 264#define TPACPI_DBG_BRGHT 0x0020
329e4e18 265#define TPACPI_DBG_MIXER 0x0040
0c78039f 266
a10d5098
JW		 267#define FAN_NOT_PRESENT 65535
268
0c78039f 269/****************************************************************************
b21a15f6 270 * Driver-wide structs and misc. variables
0c78039f
HMH		 271 */
272
273struct ibm_struct;
274
275struct tp_acpi_drv_struct {
276 const struct acpi_device_id *hid;
277 struct acpi_driver *driver;
278
279 void (*notify) (struct ibm_struct *, u32);
280 acpi_handle *handle;
281 u32 type;
282 struct acpi_device *device;
283};
284
285struct ibm_struct {
286 char *name;
287
887965e6 288 int (*read) (struct seq_file *);
0c78039f
HMH		 289 int (*write) (char *);
290 void (*exit) (void);
291 void (*resume) (void);
fd3c3a42 292 void (*suspend) (void);
90d9d3c7 293 void (*shutdown) (void);
0c78039f
HMH		 294
295 struct list_head all_drivers;
296
297 struct tp_acpi_drv_struct *acpi;
298
299 struct {
300 u8 acpi_driver_registered:1;
301 u8 acpi_notify_installed:1;
302 u8 proc_created:1;
303 u8 init_called:1;
304 u8 experimental:1;
305 } flags;
306};
307
308struct ibm_init_struct {
309 char param[32];
310
311 int (*init) (struct ibm_init_struct *);
d161a13f 312 umode_t base_procfs_mode;
0c78039f
HMH		 313 struct ibm_struct *data;
314};
315
c25d7f32
ML		 316/* DMI Quirks */
317struct quirk_entry {
318 bool btusb_bug;
319};
320
321static struct quirk_entry quirk_btusb_bug = {
322 .btusb_bug = true,
323};
324
0c78039f 325static struct {
0c78039f
HMH		 326 u32 bluetooth:1;
327 u32 hotkey:1;
328 u32 hotkey_mask:1;
329 u32 hotkey_wlsw:1;
b3180028
L		 330 enum {
331 TP_HOTKEY_TABLET_NONE = 0,
332 TP_HOTKEY_TABLET_USES_MHKG,
dda3ec0a 333 TP_HOTKEY_TABLET_USES_GMMS,
b3180028 334 } hotkey_tablet;
bb28f3d5 335 u32 kbdlight:1;
0c78039f
HMH		 336 u32 light:1;
337 u32 light_status:1;
b5972796 338 u32 bright_acpimode:1;
77775838 339 u32 bright_unkfw:1;
0c78039f 340 u32 wan:1;
0045c0aa 341 u32 uwb:1;
0c78039f 342 u32 fan_ctrl_status_undef:1;
d7377247 343 u32 second_fan:1;
14232c6e 344 u32 second_fan_ctl:1;
60201732 345 u32 beep_needs_two_args:1;
a112ceee 346 u32 mixer_no_level_control:1;
1a32ebb2 347 u32 battery_force_primary:1;
0c78039f
HMH		 348 u32 input_device_registered:1;
349 u32 platform_drv_registered:1;
0c78039f 350 u32 sensors_pdrv_registered:1;
0c78039f 351 u32 hotkey_poll_active:1;
f23a5bcb 352 u32 has_adaptive_kbd:1;
79f960e2 353 u32 kbd_lang:1;
c25d7f32 354 struct quirk_entry *quirks;
0c78039f
HMH		 355} tp_features;
356
92889022
HMH		 357static struct {
358 u16 hotkey_mask_ff:1;
c7ac6291 359 u16 volume_ctrl_forbidden:1;
92889022
HMH		 360} tp_warned;
361
0c78039f
HMH		 362struct thinkpad_id_data {
363 unsigned int vendor; /* ThinkPad vendor:
364 * PCI_VENDOR_ID_IBM/PCI_VENDOR_ID_LENOVO */
365
366 char *bios_version_str; /* Something like 1ZET51WW (1.03z) */
367 char *ec_version_str; /* Something like 1ZHT51WW-1.04a */
368
846a416b
JW		 369 u32 bios_model; /* 1Y = 0x3159, 0 = unknown */
370 u32 ec_model;
371 u16 bios_release; /* 1ZETK1WW = 0x4b31, 0 = unknown */
050df107 372 u16 ec_release;
0c78039f 373
8c74adbc
HMH		 374 char *model_str; /* ThinkPad T43 */
375 char *nummodel_str; /* 9384A9C for a 9384-A9C model */
0c78039f 376};
0c78039f
HMH		 377static struct thinkpad_id_data thinkpad_id;
378
8fef502e
HMH		 379static enum {
380 TPACPI_LIFE_INIT = 0,
381 TPACPI_LIFE_RUNNING,
382 TPACPI_LIFE_EXITING,
383} tpacpi_lifecycle;
384
b21a15f6
HMH		 385static int experimental;
386static u32 dbg_level;
387
e0e3c061
HMH		 388static struct workqueue_struct *tpacpi_wq;
389
75bd3bf2
HMH		 390enum led_status_t {
391 TPACPI_LED_OFF = 0,
392 TPACPI_LED_ON,
393 TPACPI_LED_BLINK,
394};
395
86ec0c2c 396/* tpacpi LED class */
4fa6811b
HMH		 397struct tpacpi_led_classdev {
398 struct led_classdev led_classdev;
edf2d778 399 int led;
4fa6811b
HMH		 400};
401
77775838
HMH		 402/* brightness level capabilities */
403static unsigned int bright_maxlvl; /* 0 = unknown */
404
a73f3091
HMH		 405#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
406static int dbg_wlswemul;
90ab5ee9 407static bool tpacpi_wlsw_emulstate;
a73f3091 408static int dbg_bluetoothemul;
90ab5ee9 409static bool tpacpi_bluetooth_emulstate;
a73f3091 410static int dbg_wwanemul;
90ab5ee9 411static bool tpacpi_wwan_emulstate;
0045c0aa 412static int dbg_uwbemul;
90ab5ee9 413static bool tpacpi_uwb_emulstate;
a73f3091
HMH		 414#endif
415
416
3dcc2c3b
HMH		 417/*************************************************************************
418 * Debugging helpers
419 */
420
0978e012
JP		 421#define dbg_printk(a_dbg_level, format, arg...) \
422do { \
423 if (dbg_level & (a_dbg_level)) \
424 printk(KERN_DEBUG pr_fmt("%s: " format), \
425 __func__, ##arg); \
426} while (0)
3dcc2c3b
HMH		 427
428#ifdef CONFIG_THINKPAD_ACPI_DEBUG
429#define vdbg_printk dbg_printk
430static const char *str_supported(int is_supported);
431#else
0978e012
JP		 432static inline const char *str_supported(int is_supported) { return ""; }
433#define vdbg_printk(a_dbg_level, format, arg...) \
efd85cf8 434 do { if (0) no_printk(format, ##arg); } while (0)
3dcc2c3b
HMH		 435#endif
436
73a94d86
HMH		 437static void tpacpi_log_usertask(const char * const what)
438{
0978e012
JP		 439 printk(KERN_DEBUG pr_fmt("%s: access by process with PID %d\n"),
440 what, task_tgid_vnr(current));
73a94d86
HMH		 441}
442
0978e012
JP		 443#define tpacpi_disclose_usertask(what, format, arg...) \
444do { \
445 if (unlikely((dbg_level & TPACPI_DBG_DISCLOSETASK) && \
446 (tpacpi_lifecycle == TPACPI_LIFE_RUNNING))) { \
447 printk(KERN_DEBUG pr_fmt("%s: PID %d: " format), \
448 what, task_tgid_vnr(current), ## arg); \
449 } \
450} while (0)
3dcc2c3b 451
7d95a3d5
HMH		 452/*
453 * Quirk handling helpers
454 *
846a416b
JW		 455 * ThinkPad IDs and versions seen in the field so far are
456 * two or three characters from the set [0-9A-Z], i.e. base 36.
7d95a3d5
HMH		 457 *
458 * We use values well outside that range as specials.
459 */
460
846a416b
JW		 461#define TPACPI_MATCH_ANY 0xffffffffU
462#define TPACPI_MATCH_ANY_VERSION 0xffffU
7d95a3d5
HMH		 463#define TPACPI_MATCH_UNKNOWN 0U
464
846a416b
JW		 465/* TPID('1', 'Y') == 0x3159 */
466#define TPID(__c1, __c2) (((__c1) << 8) | (__c2))
467#define TPID3(__c1, __c2, __c3) (((__c1) << 16) | ((__c2) << 8) | (__c3))
468#define TPVER TPID
7d95a3d5
HMH		 469
470#define TPACPI_Q_IBM(__id1, __id2, __quirk) \
471 { .vendor = PCI_VENDOR_ID_IBM, \
472 .bios = TPID(__id1, __id2), \
473 .ec = TPACPI_MATCH_ANY, \
474 .quirks = (__quirk) }
475
476#define TPACPI_Q_LNV(__id1, __id2, __quirk) \
477 { .vendor = PCI_VENDOR_ID_LENOVO, \
478 .bios = TPID(__id1, __id2), \
479 .ec = TPACPI_MATCH_ANY, \
480 .quirks = (__quirk) }
481
1a32ebb2
JW		 482#define TPACPI_Q_LNV3(__id1, __id2, __id3, __quirk) \
483 { .vendor = PCI_VENDOR_ID_LENOVO, \
484 .bios = TPID3(__id1, __id2, __id3), \
485 .ec = TPACPI_MATCH_ANY, \
486 .quirks = (__quirk) }
487
599eefff
JW		 488#define TPACPI_QEC_IBM(__id1, __id2, __quirk) \
489 { .vendor = PCI_VENDOR_ID_IBM, \
490 .bios = TPACPI_MATCH_ANY, \
491 .ec = TPID(__id1, __id2), \
492 .quirks = (__quirk) }
493
a112ceee
HMH		 494#define TPACPI_QEC_LNV(__id1, __id2, __quirk) \
495 { .vendor = PCI_VENDOR_ID_LENOVO, \
496 .bios = TPACPI_MATCH_ANY, \
497 .ec = TPID(__id1, __id2), \
498 .quirks = (__quirk) }
499
7d95a3d5
HMH		 500struct tpacpi_quirk {
501 unsigned int vendor;
846a416b
JW		 502 u32 bios;
503 u32 ec;
7d95a3d5
HMH		 504 unsigned long quirks;
505};
506
507/**
508 * tpacpi_check_quirks() - search BIOS/EC version on a list
509 * @qlist: array of &struct tpacpi_quirk
510 * @qlist_size: number of elements in @qlist
511 *
512 * Iterates over a quirks list until one is found that matches the
513 * ThinkPad's vendor, BIOS and EC model.
514 *
515 * Returns 0 if nothing matches, otherwise returns the quirks field of
516 * the matching &struct tpacpi_quirk entry.
517 *
518 * The match criteria is: vendor, ec and bios much match.
519 */
520static unsigned long __init tpacpi_check_quirks(
521 const struct tpacpi_quirk *qlist,
522 unsigned int qlist_size)
523{
524 while (qlist_size) {
525 if ((qlist->vendor == thinkpad_id.vendor ||
526 qlist->vendor == TPACPI_MATCH_ANY) &&
527 (qlist->bios == thinkpad_id.bios_model ||
528 qlist->bios == TPACPI_MATCH_ANY) &&
529 (qlist->ec == thinkpad_id.ec_model ||
530 qlist->ec == TPACPI_MATCH_ANY))
531 return qlist->quirks;
532
533 qlist_size--;
534 qlist++;
535 }
536 return 0;
537}
538
e28393c0
HMH		 539static inline bool __pure __init tpacpi_is_lenovo(void)
540{
541 return thinkpad_id.vendor == PCI_VENDOR_ID_LENOVO;
542}
543
544static inline bool __pure __init tpacpi_is_ibm(void)
545{
546 return thinkpad_id.vendor == PCI_VENDOR_ID_IBM;
547}
7d95a3d5 548
56b6aeb0
HMH		 549/****************************************************************************
550 ****************************************************************************
551 *
552 * ACPI Helpers and device model
553 *
554 ****************************************************************************
555 ****************************************************************************/
556
557/*************************************************************************
558 * ACPI basic handles
559 */
1da177e4 560
94954cc6 561static acpi_handle root_handle;
437e470c 562static acpi_handle ec_handle;
1da177e4 563
e0c7dfe7 564#define TPACPI_HANDLE(object, parent, paths...) \
1da177e4 565 static acpi_handle object##_handle; \
3bd01896 566 static const acpi_handle * const object##_parent __initconst = \
ef07a5ab
HMH		 567 &parent##_handle; \
568 static char *object##_paths[] __initdata = { paths }
1da177e4 569
e0c7dfe7
HMH		 570TPACPI_HANDLE(ecrd, ec, "ECRD"); /* 570 */
571TPACPI_HANDLE(ecwr, ec, "ECWR"); /* 570 */
78f81cc4 572
35ff8b9f
HMH		 573TPACPI_HANDLE(cmos, root, "\\UCMS", /* R50, R50e, R50p, R51, */
574 /* T4x, X31, X40 */
78f81cc4
BD		 575 "\\CMOS", /* A3x, G4x, R32, T23, T30, X22-24, X30 */
576 "\\CMS", /* R40, R40e */
56b6aeb0 577 ); /* all others */
78f81cc4 578
e0c7dfe7 579TPACPI_HANDLE(hkey, ec, "\\_SB.HKEY", /* 600e/x, 770e, 770x */
78f81cc4
BD		 580 "^HKEY", /* R30, R31 */
581 "HKEY", /* all others */
56b6aeb0 582 ); /* 570 */
78f81cc4 583
56b6aeb0
HMH		 584/*************************************************************************
585 * ACPI helpers
a8b7a662
HMH		 586 */
587
1da177e4 588static int acpi_evalf(acpi_handle handle,
eceeb437 589 int *res, char *method, char *fmt, ...)
1da177e4
LT		 590{
591 char *fmt0 = fmt;
78f81cc4 592 struct acpi_object_list params;
e0c7dfe7 593 union acpi_object in_objs[TPACPI_MAX_ACPI_ARGS];
78f81cc4
BD		 594 struct acpi_buffer result, *resultp;
595 union acpi_object out_obj;
596 acpi_status status;
597 va_list ap;
598 char res_type;
599 int success;
600 int quiet;
1da177e4
LT		 601
602 if (!*fmt) {
0978e012 603 pr_err("acpi_evalf() called with empty format\n");
1da177e4
LT		 604 return 0;
605 }
606
607 if (*fmt == 'q') {
608 quiet = 1;
609 fmt++;
610 } else
611 quiet = 0;
612
613 res_type = *(fmt++);
614
615 params.count = 0;
616 params.pointer = &in_objs[0];
617
618 va_start(ap, fmt);
619 while (*fmt) {
620 char c = *(fmt++);
621 switch (c) {
622 case 'd': /* int */
623 in_objs[params.count].integer.value = va_arg(ap, int);
624 in_objs[params.count++].type = ACPI_TYPE_INTEGER;
625 break;
78f81cc4 626 /* add more types as needed */
1da177e4 627 default:
5cac62ac
AS		 628 pr_err("acpi_evalf() called with invalid format character '%c'\n",
629 c);
21365851 630 va_end(ap);
1da177e4
LT		 631 return 0;
632 }
633 }
634 va_end(ap);
635
78f81cc4
BD		 636 if (res_type != 'v') {
637 result.length = sizeof(out_obj);
638 result.pointer = &out_obj;
639 resultp = &result;
640 } else
641 resultp = NULL;
1da177e4 642
78f81cc4 643 status = acpi_evaluate_object(handle, method, &params, resultp);
1da177e4
LT		 644
645 switch (res_type) {
78f81cc4 646 case 'd': /* int */
263f4a30
HMH		 647 success = (status == AE_OK &&
648 out_obj.type == ACPI_TYPE_INTEGER);
649 if (success && res)
eceeb437 650 *res = out_obj.integer.value;
1da177e4 651 break;
78f81cc4 652 case 'v': /* void */
1da177e4
LT		 653 success = status == AE_OK;
654 break;
78f81cc4 655 /* add more types as needed */
1da177e4 656 default:
5cac62ac
AS		 657 pr_err("acpi_evalf() called with invalid format character '%c'\n",
658 res_type);
1da177e4
LT		 659 return 0;
660 }
661
56b6aeb0 662 if (!success && !quiet)
0978e012 663 pr_err("acpi_evalf(%s, %s, ...) failed: %s\n",
263f4a30 664 method, fmt0, acpi_format_exception(status));
56b6aeb0
HMH		 665
666 return success;
667}
668
35ff8b9f 669static int acpi_ec_read(int i, u8 *p)
56b6aeb0
HMH		 670{
671 int v;
672
673 if (ecrd_handle) {
674 if (!acpi_evalf(ecrd_handle, &v, NULL, "dd", i))
675 return 0;
676 *p = v;
677 } else {
678 if (ec_read(i, p) < 0)
679 return 0;
680 }
681
682 return 1;
683}
684
685static int acpi_ec_write(int i, u8 v)
686{
687 if (ecwr_handle) {
688 if (!acpi_evalf(ecwr_handle, NULL, NULL, "vdd", i, v))
689 return 0;
690 } else {
691 if (ec_write(i, v) < 0)
692 return 0;
693 }
694
695 return 1;
696}
697
c9bea99c
HMH		 698static int issue_thinkpad_cmos_command(int cmos_cmd)
699{
700 if (!cmos_handle)
701 return -ENXIO;
702
703 if (!acpi_evalf(cmos_handle, NULL, NULL, "vd", cmos_cmd))
704 return -EIO;
705
706 return 0;
707}
708
56b6aeb0
HMH		 709/*************************************************************************
710 * ACPI device model
711 */
712
35ff8b9f
HMH		 713#define TPACPI_ACPIHANDLE_INIT(object) \
714 drv_acpi_handle_init(#object, &object##_handle, *object##_parent, \
ef07a5ab 715 object##_paths, ARRAY_SIZE(object##_paths))
f74a27d4 716
ef07a5ab
HMH		 717static void __init drv_acpi_handle_init(const char *name,
718 acpi_handle *handle, const acpi_handle parent,
719 char **paths, const int num_paths)
56b6aeb0
HMH		 720{
721 int i;
722 acpi_status status;
723
5ae930e6
HMH		 724 vdbg_printk(TPACPI_DBG_INIT, "trying to locate ACPI handle for %s\n",
725 name);
726
56b6aeb0
HMH		 727 for (i = 0; i < num_paths; i++) {
728 status = acpi_get_handle(parent, paths[i], handle);
729 if (ACPI_SUCCESS(status)) {
5ae930e6
HMH		 730 dbg_printk(TPACPI_DBG_INIT,
731 "Found ACPI handle %s for %s\n",
ef07a5ab 732 paths[i], name);
56b6aeb0
HMH		 733 return;
734 }
735 }
736
5ae930e6
HMH		 737 vdbg_printk(TPACPI_DBG_INIT, "ACPI handle for %s not found\n",
738 name);
56b6aeb0
HMH		 739 *handle = NULL;
740}
741
437e470c
HMH		 742static acpi_status __init tpacpi_acpi_handle_locate_callback(acpi_handle handle,
743 u32 level, void *context, void **return_value)
744{
46445b6b 745 if (!strcmp(context, "video")) {
f7e62c58
RW		 746 struct acpi_device *dev = acpi_fetch_acpi_dev(handle);
747
748 if (!dev || strcmp(ACPI_VIDEO_HID, acpi_device_hid(dev)))
46445b6b
AL		 749 return AE_OK;
750 }
751
437e470c
HMH		 752 *(acpi_handle *)return_value = handle;
753
754 return AE_CTRL_TERMINATE;
755}
756
757static void __init tpacpi_acpi_handle_locate(const char *name,
758 const char *hid,
759 acpi_handle *handle)
760{
761 acpi_status status;
762 acpi_handle device_found;
763
46445b6b 764 BUG_ON(!name || !handle);
437e470c
HMH		 765 vdbg_printk(TPACPI_DBG_INIT,
766 "trying to locate ACPI handle for %s, using HID %s\n",
46445b6b 767 name, hid ? hid : "NULL");
437e470c
HMH		 768
769 memset(&device_found, 0, sizeof(device_found));
770 status = acpi_get_devices(hid, tpacpi_acpi_handle_locate_callback,
771 (void *)name, &device_found);
772
773 *handle = NULL;
774
775 if (ACPI_SUCCESS(status)) {
776 *handle = device_found;
777 dbg_printk(TPACPI_DBG_INIT,
778 "Found ACPI handle for %s\n", name);
779 } else {
780 vdbg_printk(TPACPI_DBG_INIT,
781 "Could not locate an ACPI handle for %s: %s\n",
782 name, acpi_format_exception(status));
783 }
784}
785
8d376cd6 786static void dispatch_acpi_notify(acpi_handle handle, u32 event, void *data)
56b6aeb0
HMH		 787{
788 struct ibm_struct *ibm = data;
789
8fef502e
HMH		 790 if (tpacpi_lifecycle != TPACPI_LIFE_RUNNING)
791 return;
792
8d376cd6 793 if (!ibm || !ibm->acpi || !ibm->acpi->notify)
56b6aeb0
HMH		 794 return;
795
8d376cd6 796 ibm->acpi->notify(ibm, event);
56b6aeb0
HMH		 797}
798
8d376cd6 799static int __init setup_acpi_notify(struct ibm_struct *ibm)
56b6aeb0
HMH		 800{
801 acpi_status status;
56b6aeb0 802
8d376cd6
HMH		 803 BUG_ON(!ibm->acpi);
804
805 if (!*ibm->acpi->handle)
56b6aeb0
HMH		 806 return 0;
807
5ae930e6 808 vdbg_printk(TPACPI_DBG_INIT,
fe08bc4b
HMH		 809 "setting up ACPI notify for %s\n", ibm->name);
810
f7e62c58
RW		 811 ibm->acpi->device = acpi_fetch_acpi_dev(*ibm->acpi->handle);
812 if (!ibm->acpi->device) {
813 pr_err("acpi_fetch_acpi_dev(%s) failed\n", ibm->name);
56b6aeb0
HMH		 814 return -ENODEV;
815 }
816
db89b4f0 817 ibm->acpi->device->driver_data = ibm;
8d376cd6 818 sprintf(acpi_device_class(ibm->acpi->device), "%s/%s",
e0c7dfe7 819 TPACPI_ACPI_EVENT_PREFIX,
643f12db 820 ibm->name);
56b6aeb0 821
8d376cd6
HMH		 822 status = acpi_install_notify_handler(*ibm->acpi->handle,
823 ibm->acpi->type, dispatch_acpi_notify, ibm);
56b6aeb0
HMH		 824 if (ACPI_FAILURE(status)) {
825 if (status == AE_ALREADY_EXISTS) {
5cac62ac
AS		 826 pr_notice("another device driver is already handling %s events\n",
827 ibm->name);
56b6aeb0 828 } else {
0978e012 829 pr_err("acpi_install_notify_handler(%s) failed: %s\n",
72f19921 830 ibm->name, acpi_format_exception(status));
56b6aeb0
HMH		 831 }
832 return -ENODEV;
833 }
8d376cd6 834 ibm->flags.acpi_notify_installed = 1;
56b6aeb0
HMH		 835 return 0;
836}
837
8d376cd6 838static int __init tpacpi_device_add(struct acpi_device *device)
56b6aeb0
HMH		 839{
840 return 0;
841}
842
6700121b 843static int __init register_tpacpi_subdriver(struct ibm_struct *ibm)
56b6aeb0 844{
5ae930e6 845 int rc;
56b6aeb0 846
fe08bc4b
HMH		 847 dbg_printk(TPACPI_DBG_INIT,
848 "registering %s as an ACPI driver\n", ibm->name);
849
8d376cd6
HMH		 850 BUG_ON(!ibm->acpi);
851
852 ibm->acpi->driver = kzalloc(sizeof(struct acpi_driver), GFP_KERNEL);
853 if (!ibm->acpi->driver) {
0978e012 854 pr_err("failed to allocate memory for ibm->acpi->driver\n");
5fba344c 855 return -ENOMEM;
56b6aeb0
HMH		 856 }
857
e0c7dfe7 858 sprintf(ibm->acpi->driver->name, "%s_%s", TPACPI_NAME, ibm->name);
8d376cd6 859 ibm->acpi->driver->ids = ibm->acpi->hid;
1ba90e3a 860
8d376cd6 861 ibm->acpi->driver->ops.add = &tpacpi_device_add;
56b6aeb0 862
5ae930e6
HMH		 863 rc = acpi_bus_register_driver(ibm->acpi->driver);
864 if (rc < 0) {
0978e012 865 pr_err("acpi_bus_register_driver(%s) failed: %d\n",
1ba90e3a 866 ibm->name, rc);
8d376cd6
HMH		 867 kfree(ibm->acpi->driver);
868 ibm->acpi->driver = NULL;
5ae930e6 869 } else if (!rc)
8d376cd6 870 ibm->flags.acpi_driver_registered = 1;
56b6aeb0 871
5ae930e6 872 return rc;
56b6aeb0
HMH		 873}
874
875
876/****************************************************************************
877 ****************************************************************************
878 *
879 * Procfs Helpers
880 *
881 ****************************************************************************
882 ****************************************************************************/
883
887965e6 884static int dispatch_proc_show(struct seq_file *m, void *v)
56b6aeb0 885{
887965e6 886 struct ibm_struct *ibm = m->private;
56b6aeb0
HMH		 887
888 if (!ibm || !ibm->read)
889 return -EINVAL;
887965e6
AD		 890 return ibm->read(m);
891}
56b6aeb0 892
887965e6
AD		 893static int dispatch_proc_open(struct inode *inode, struct file *file)
894{
359745d7 895 return single_open(file, dispatch_proc_show, pde_data(inode));
56b6aeb0
HMH		 896}
897
887965e6 898static ssize_t dispatch_proc_write(struct file *file,
35ff8b9f 899 const char __user *userbuf,
887965e6 900 size_t count, loff_t *pos)
56b6aeb0 901{
359745d7 902 struct ibm_struct *ibm = pde_data(file_inode(file));
56b6aeb0
HMH		 903 char *kernbuf;
904 int ret;
905
906 if (!ibm || !ibm->write)
907 return -EINVAL;
df11f6c5
AS		 908 if (count > PAGE_SIZE - 1)
909 return -EINVAL;
910
4316c640
RJ		 911 kernbuf = memdup_user_nul(userbuf, count);
912 if (IS_ERR(kernbuf))
913 return PTR_ERR(kernbuf);
56b6aeb0
HMH		 914 ret = ibm->write(kernbuf);
915 if (ret == 0)
916 ret = count;
1da177e4 917
56b6aeb0
HMH		 918 kfree(kernbuf);
919
920 return ret;
1da177e4
LT		 921}
922
97a32539
AD		 923static const struct proc_ops dispatch_proc_ops = {
924 .proc_open = dispatch_proc_open,
925 .proc_read = seq_read,
926 .proc_lseek = seq_lseek,
927 .proc_release = single_release,
928 .proc_write = dispatch_proc_write,
887965e6
AD		 929};
930
54ae1501
HMH		 931/****************************************************************************
932 ****************************************************************************
933 *
7f5d1cd6 934 * Device model: input, hwmon and platform
54ae1501
HMH		 935 *
936 ****************************************************************************
937 ****************************************************************************/
938
94954cc6 939static struct platform_device *tpacpi_pdev;
7fd40029 940static struct platform_device *tpacpi_sensors_pdev;
1beeffe4 941static struct device *tpacpi_hwmon;
7f5d1cd6 942static struct input_dev *tpacpi_inputdev;
8523ed6f 943static struct mutex tpacpi_inputdev_send_mutex;
b21a15f6 944static LIST_HEAD(tpacpi_all_drivers);
e295e850 945
3567a4e2 946#ifdef CONFIG_PM_SLEEP
4959a781 947static int tpacpi_suspend_handler(struct device *dev)
083f1760
HMH		 948{
949 struct ibm_struct *ibm, *itmp;
950
951 list_for_each_entry_safe(ibm, itmp,
952 &tpacpi_all_drivers,
953 all_drivers) {
954 if (ibm->suspend)
fd3c3a42 955 (ibm->suspend)();
083f1760
HMH		 956 }
957
958 return 0;
959}
960
4959a781 961static int tpacpi_resume_handler(struct device *dev)
e295e850
HMH		 962{
963 struct ibm_struct *ibm, *itmp;
964
965 list_for_each_entry_safe(ibm, itmp,
966 &tpacpi_all_drivers,
967 all_drivers) {
968 if (ibm->resume)
969 (ibm->resume)();
970 }
971
972 return 0;
973}
3567a4e2 974#endif
e295e850 975
4959a781
RW		 976static SIMPLE_DEV_PM_OPS(tpacpi_pm,
977 tpacpi_suspend_handler, tpacpi_resume_handler);
978
90d9d3c7
HMH		 979static void tpacpi_shutdown_handler(struct platform_device *pdev)
980{
981 struct ibm_struct *ibm, *itmp;
982
983 list_for_each_entry_safe(ibm, itmp,
984 &tpacpi_all_drivers,
985 all_drivers) {
986 if (ibm->shutdown)
987 (ibm->shutdown)();
988 }
989}
990
176750d6 991/*************************************************************************
b21a15f6 992 * sysfs support helpers
176750d6
HMH		 993 */
994
7252374a
HMH		 995static int parse_strtoul(const char *buf,
996 unsigned long max, unsigned long *value)
997{
998 char *endp;
999
e7d2860b
AGR		 1000 *value = simple_strtoul(skip_spaces(buf), &endp, 0);
1001 endp = skip_spaces(endp);
7252374a
HMH		 1002 if (*endp || *value > max)
1003 return -EINVAL;
1004
1005 return 0;
1006}
1007
d64c81c4
HMH		 1008static void tpacpi_disable_brightness_delay(void)
1009{
1010 if (acpi_evalf(hkey_handle, NULL, "PWMS", "qvd", 0))
0978e012 1011 pr_notice("ACPI backlight control delay disabled\n");
d64c81c4
HMH		 1012}
1013
19d337df
JB		 1014static void printk_deprecated_attribute(const char * const what,
1015 const char * const details)
1016{
1017 tpacpi_log_usertask("deprecated sysfs attribute");
5cac62ac 1018 pr_warn("WARNING: sysfs attribute %s is deprecated and will be removed. %s\n",
19d337df
JB		 1019 what, details);
1020}
1021
1022/*************************************************************************
1023 * rfkill and radio control support helpers
1024 */
1025
1026/*
1027 * ThinkPad-ACPI firmware handling model:
1028 *
1029 * WLSW (master wireless switch) is event-driven, and is common to all
1030 * firmware-controlled radios. It cannot be controlled, just monitored,
1031 * as expected. It overrides all radio state in firmware
1032 *
1033 * The kernel, a masked-off hotkey, and WLSW can change the radio state
1034 * (TODO: verify how WLSW interacts with the returned radio state).
1035 *
1036 * The only time there are shadow radio state changes, is when
1037 * masked-off hotkeys are used.
1038 */
1039
1040/*
1041 * Internal driver API for radio state:
1042 *
1043 * int: < 0 = error, otherwise enum tpacpi_rfkill_state
1044 * bool: true means radio blocked (off)
1045 */
1046enum tpacpi_rfkill_state {
1047 TPACPI_RFK_RADIO_OFF = 0,
1048 TPACPI_RFK_RADIO_ON
1049};
1050
1051/* rfkill switches */
1052enum tpacpi_rfk_id {
1053 TPACPI_RFK_BLUETOOTH_SW_ID = 0,
1054 TPACPI_RFK_WWAN_SW_ID,
1055 TPACPI_RFK_UWB_SW_ID,
1056 TPACPI_RFK_SW_MAX
1057};
1058
1059static const char *tpacpi_rfkill_names[] = {
1060 [TPACPI_RFK_BLUETOOTH_SW_ID] = "bluetooth",
1061 [TPACPI_RFK_WWAN_SW_ID] = "wwan",
1062 [TPACPI_RFK_UWB_SW_ID] = "uwb",
1063 [TPACPI_RFK_SW_MAX] = NULL
1064};
1065
1066/* ThinkPad-ACPI rfkill subdriver */
1067struct tpacpi_rfk {
1068 struct rfkill *rfkill;
1069 enum tpacpi_rfk_id id;
1070 const struct tpacpi_rfk_ops *ops;
1071};
1072
1073struct tpacpi_rfk_ops {
1074 /* firmware interface */
1075 int (*get_status)(void);
1076 int (*set_status)(const enum tpacpi_rfkill_state);
1077};
1078
1079static struct tpacpi_rfk *tpacpi_rfkill_switches[TPACPI_RFK_SW_MAX];
1080
1081/* Query FW and update rfkill sw state for a given rfkill switch */
1082static int tpacpi_rfk_update_swstate(const struct tpacpi_rfk *tp_rfk)
1083{
1084 int status;
1085
1086 if (!tp_rfk)
1087 return -ENODEV;
1088
1089 status = (tp_rfk->ops->get_status)();
1090 if (status < 0)
1091 return status;
1092
1093 rfkill_set_sw_state(tp_rfk->rfkill,
1094 (status == TPACPI_RFK_RADIO_OFF));
1095
1096 return status;
1097}
1098
19d337df
JB		 1099/*
1100 * Sync the HW-blocking state of all rfkill switches,
1101 * do notice it causes the rfkill core to schedule uevents
1102 */
1103static void tpacpi_rfk_update_hwblock_state(bool blocked)
1104{
1105 unsigned int i;
1106 struct tpacpi_rfk *tp_rfk;
1107
1108 for (i = 0; i < TPACPI_RFK_SW_MAX; i++) {
1109 tp_rfk = tpacpi_rfkill_switches[i];
1110 if (tp_rfk) {
1111 if (rfkill_set_hw_state(tp_rfk->rfkill,
1112 blocked)) {
1113 /* ignore -- we track sw block */
1114 }
1115 }
1116 }
1117}
1118
1119/* Call to get the WLSW state from the firmware */
1120static int hotkey_get_wlsw(void);
1121
1122/* Call to query WLSW state and update all rfkill switches */
1123static bool tpacpi_rfk_check_hwblock_state(void)
1124{
1125 int res = hotkey_get_wlsw();
1126 int hw_blocked;
1127
1128 /* When unknown or unsupported, we have to assume it is unblocked */
1129 if (res < 0)
1130 return false;
1131
1132 hw_blocked = (res == TPACPI_RFK_RADIO_OFF);
1133 tpacpi_rfk_update_hwblock_state(hw_blocked);
1134
1135 return hw_blocked;
1136}
1137
1138static int tpacpi_rfk_hook_set_block(void *data, bool blocked)
1139{
1140 struct tpacpi_rfk *tp_rfk = data;
1141 int res;
1142
1143 dbg_printk(TPACPI_DBG_RFKILL,
1144 "request to change radio state to %s\n",
1145 blocked ? "blocked" : "unblocked");
1146
1147 /* try to set radio state */
1148 res = (tp_rfk->ops->set_status)(blocked ?
1149 TPACPI_RFK_RADIO_OFF : TPACPI_RFK_RADIO_ON);
1150
1151 /* and update the rfkill core with whatever the FW really did */
1152 tpacpi_rfk_update_swstate(tp_rfk);
1153
1154 return (res < 0) ? res : 0;
1155}
1156
1157static const struct rfkill_ops tpacpi_rfk_rfkill_ops = {
1158 .set_block = tpacpi_rfk_hook_set_block,
1159};
1160
1161static int __init tpacpi_new_rfkill(const enum tpacpi_rfk_id id,
1162 const struct tpacpi_rfk_ops *tp_rfkops,
0e74dc26
HMH		 1163 const enum rfkill_type rfktype,
1164 const char *name,
19d337df 1165 const bool set_default)
0e74dc26 1166{
19d337df 1167 struct tpacpi_rfk *atp_rfk;
0e74dc26 1168 int res;
06d5caf4 1169 bool sw_state = false;
5451a923 1170 bool hw_state;
06d5caf4 1171 int sw_status;
90d9d3c7 1172
19d337df
JB		 1173 BUG_ON(id >= TPACPI_RFK_SW_MAX || tpacpi_rfkill_switches[id]);
1174
19d337df
JB		 1175 atp_rfk = kzalloc(sizeof(struct tpacpi_rfk), GFP_KERNEL);
1176 if (atp_rfk)
1177 atp_rfk->rfkill = rfkill_alloc(name,
1178 &tpacpi_pdev->dev,
1179 rfktype,
1180 &tpacpi_rfk_rfkill_ops,
1181 atp_rfk);
1182 if (!atp_rfk || !atp_rfk->rfkill) {
0978e012 1183 pr_err("failed to allocate memory for rfkill class\n");
19d337df 1184 kfree(atp_rfk);
0e74dc26
HMH		 1185 return -ENOMEM;
1186 }
1187
19d337df
JB		 1188 atp_rfk->id = id;
1189 atp_rfk->ops = tp_rfkops;
0e74dc26 1190
06d5caf4
AJ		 1191 sw_status = (tp_rfkops->get_status)();
1192 if (sw_status < 0) {
0978e012
JP		 1193 pr_err("failed to read initial state for %s, error %d\n",
1194 name, sw_status);
b3fa1329 1195 } else {
06d5caf4 1196 sw_state = (sw_status == TPACPI_RFK_RADIO_OFF);
b3fa1329
AJ		 1197 if (set_default) {
1198 /* try to keep the initial state, since we ask the
1199 * firmware to preserve it across S5 in NVRAM */
06d5caf4 1200 rfkill_init_sw_state(atp_rfk->rfkill, sw_state);
b3fa1329
AJ		 1201 }
1202 }
5451a923
HMH		 1203 hw_state = tpacpi_rfk_check_hwblock_state();
1204 rfkill_set_hw_state(atp_rfk->rfkill, hw_state);
19d337df
JB		 1205
1206 res = rfkill_register(atp_rfk->rfkill);
0e74dc26 1207 if (res < 0) {
0978e012 1208 pr_err("failed to register %s rfkill switch: %d\n", name, res);
19d337df
JB		 1209 rfkill_destroy(atp_rfk->rfkill);
1210 kfree(atp_rfk);
0e74dc26
HMH		 1211 return res;
1212 }
1213
19d337df 1214 tpacpi_rfkill_switches[id] = atp_rfk;
5451a923 1215
0978e012 1216 pr_info("rfkill switch %s: radio is %sblocked\n",
5451a923 1217 name, (sw_state || hw_state) ? "" : "un");
0e74dc26
HMH		 1218 return 0;
1219}
1220
19d337df 1221static void tpacpi_destroy_rfkill(const enum tpacpi_rfk_id id)
73a94d86 1222{
19d337df
JB		 1223 struct tpacpi_rfk *tp_rfk;
1224
1225 BUG_ON(id >= TPACPI_RFK_SW_MAX);
1226
1227 tp_rfk = tpacpi_rfkill_switches[id];
1228 if (tp_rfk) {
1229 rfkill_unregister(tp_rfk->rfkill);
5f0dadb4 1230 rfkill_destroy(tp_rfk->rfkill);
19d337df
JB		 1231 tpacpi_rfkill_switches[id] = NULL;
1232 kfree(tp_rfk);
1233 }
73a94d86
HMH		 1234}
1235
1236static void printk_deprecated_rfkill_attribute(const char * const what)
1237{
1238 printk_deprecated_attribute(what,
1239 "Please switch to generic rfkill before year 2010");
1240}
1241
19d337df
JB		 1242/* sysfs <radio> enable ------------------------------------------------ */
1243static ssize_t tpacpi_rfk_sysfs_enable_show(const enum tpacpi_rfk_id id,
1244 struct device_attribute *attr,
1245 char *buf)
1246{
1247 int status;
1248
1249 printk_deprecated_rfkill_attribute(attr->attr.name);
1250
1251 /* This is in the ABI... */
1252 if (tpacpi_rfk_check_hwblock_state()) {
1253 status = TPACPI_RFK_RADIO_OFF;
1254 } else {
1255 status = tpacpi_rfk_update_swstate(tpacpi_rfkill_switches[id]);
1256 if (status < 0)
1257 return status;
1258 }
1259
33ce79be 1260 return sysfs_emit(buf, "%d\n",
19d337df
JB		 1261 (status == TPACPI_RFK_RADIO_ON) ? 1 : 0);
1262}
1263
1264static ssize_t tpacpi_rfk_sysfs_enable_store(const enum tpacpi_rfk_id id,
1265 struct device_attribute *attr,
1266 const char *buf, size_t count)
1267{
1268 unsigned long t;
1269 int res;
1270
1271 printk_deprecated_rfkill_attribute(attr->attr.name);
1272
1273 if (parse_strtoul(buf, 1, &t))
1274 return -EINVAL;
1275
1276 tpacpi_disclose_usertask(attr->attr.name, "set to %ld\n", t);
1277
1278 /* This is in the ABI... */
1279 if (tpacpi_rfk_check_hwblock_state() && !!t)
1280 return -EPERM;
1281
1282 res = tpacpi_rfkill_switches[id]->ops->set_status((!!t) ?
1283 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF);
1284 tpacpi_rfk_update_swstate(tpacpi_rfkill_switches[id]);
1285
1286 return (res < 0) ? res : count;
1287}
1288
1289/* procfs -------------------------------------------------------------- */
887965e6 1290static int tpacpi_rfk_procfs_read(const enum tpacpi_rfk_id id, struct seq_file *m)
19d337df 1291{
19d337df 1292 if (id >= TPACPI_RFK_SW_MAX)
887965e6 1293 seq_printf(m, "status:\t\tnot supported\n");
19d337df
JB		 1294 else {
1295 int status;
1296
1297 /* This is in the ABI... */
1298 if (tpacpi_rfk_check_hwblock_state()) {
1299 status = TPACPI_RFK_RADIO_OFF;
1300 } else {
1301 status = tpacpi_rfk_update_swstate(
1302 tpacpi_rfkill_switches[id]);
1303 if (status < 0)
1304 return status;
1305 }
1306
664607f5 1307 seq_printf(m, "status:\t\t%s\n", str_enabled_disabled(status == TPACPI_RFK_RADIO_ON));
887965e6 1308 seq_printf(m, "commands:\tenable, disable\n");
19d337df
JB		 1309 }
1310
887965e6 1311 return 0;
19d337df
JB		 1312}
1313
1314static int tpacpi_rfk_procfs_write(const enum tpacpi_rfk_id id, char *buf)
1315{
1316 char *cmd;
1317 int status = -1;
1318 int res = 0;
1319
1320 if (id >= TPACPI_RFK_SW_MAX)
1321 return -ENODEV;
1322
be51bd45 1323 while ((cmd = strsep(&buf, ","))) {
26217796 1324 if (strstarts(cmd, "enable"))
19d337df 1325 status = TPACPI_RFK_RADIO_ON;
26217796 1326 else if (strstarts(cmd, "disable"))
19d337df
JB		 1327 status = TPACPI_RFK_RADIO_OFF;
1328 else
1329 return -EINVAL;
1330 }
1331
1332 if (status != -1) {
1333 tpacpi_disclose_usertask("procfs", "attempt to %s %s\n",
664607f5 1334 str_enable_disable(status == TPACPI_RFK_RADIO_ON),
19d337df
JB		 1335 tpacpi_rfkill_names[id]);
1336 res = (tpacpi_rfkill_switches[id]->ops->set_status)(status);
1337 tpacpi_rfk_update_swstate(tpacpi_rfkill_switches[id]);
1338 }
1339
1340 return res;
1341}
1342
56b6aeb0 1343/*************************************************************************
b21a15f6 1344 * thinkpad-acpi driver attributes
56b6aeb0
HMH		 1345 */
1346
b21a15f6 1347/* interface_version --------------------------------------------------- */
ac3054c4 1348static ssize_t interface_version_show(struct device_driver *drv, char *buf)
1da177e4 1349{
33ce79be 1350 return sysfs_emit(buf, "0x%08x\n", TPACPI_SYSFS_VERSION);
b21a15f6 1351}
ac3054c4 1352static DRIVER_ATTR_RO(interface_version);
b21a15f6
HMH		 1353
1354/* debug_level --------------------------------------------------------- */
ac3054c4 1355static ssize_t debug_level_show(struct device_driver *drv, char *buf)
b21a15f6 1356{
33ce79be 1357 return sysfs_emit(buf, "0x%04x\n", dbg_level);
b21a15f6
HMH		 1358}
1359
ac3054c4
GKH		 1360static ssize_t debug_level_store(struct device_driver *drv, const char *buf,
1361 size_t count)
b21a15f6
HMH		 1362{
1363 unsigned long t;
1364
1365 if (parse_strtoul(buf, 0xffff, &t))
1366 return -EINVAL;
1367
1368 dbg_level = t;
1369
1370 return count;
1371}
ac3054c4 1372static DRIVER_ATTR_RW(debug_level);
b21a15f6
HMH		 1373
1374/* version ------------------------------------------------------------- */
ac3054c4 1375static ssize_t version_show(struct device_driver *drv, char *buf)
b21a15f6 1376{
33ce79be 1377 return sysfs_emit(buf, "%s v%s\n",
35ff8b9f 1378 TPACPI_DESC, TPACPI_VERSION);
b21a15f6 1379}
ac3054c4 1380static DRIVER_ATTR_RO(version);
b21a15f6
HMH		 1381
1382/* --------------------------------------------------------------------- */
1383
a73f3091
HMH		 1384#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
1385
a73f3091 1386/* wlsw_emulstate ------------------------------------------------------ */
ac3054c4 1387static ssize_t wlsw_emulstate_show(struct device_driver *drv, char *buf)
a73f3091 1388{
33ce79be 1389 return sysfs_emit(buf, "%d\n", !!tpacpi_wlsw_emulstate);
a73f3091
HMH		 1390}
1391
ac3054c4
GKH		 1392static ssize_t wlsw_emulstate_store(struct device_driver *drv, const char *buf,
1393 size_t count)
a73f3091
HMH		 1394{
1395 unsigned long t;
1396
1397 if (parse_strtoul(buf, 1, &t))
1398 return -EINVAL;
1399
19d337df 1400 if (tpacpi_wlsw_emulstate != !!t) {
a73f3091 1401 tpacpi_wlsw_emulstate = !!t;
19d337df
JB		 1402 tpacpi_rfk_update_hwblock_state(!t); /* negative logic */
1403 }
a73f3091
HMH		 1404
1405 return count;
1406}
ac3054c4 1407static DRIVER_ATTR_RW(wlsw_emulstate);
a73f3091
HMH		 1408
1409/* bluetooth_emulstate ------------------------------------------------- */
ac3054c4 1410static ssize_t bluetooth_emulstate_show(struct device_driver *drv, char *buf)
a73f3091 1411{
33ce79be 1412 return sysfs_emit(buf, "%d\n", !!tpacpi_bluetooth_emulstate);
a73f3091
HMH		 1413}
1414
ac3054c4
GKH		 1415static ssize_t bluetooth_emulstate_store(struct device_driver *drv,
1416 const char *buf, size_t count)
a73f3091
HMH		 1417{
1418 unsigned long t;
1419
1420 if (parse_strtoul(buf, 1, &t))
1421 return -EINVAL;
1422
1423 tpacpi_bluetooth_emulstate = !!t;
1424
1425 return count;
1426}
ac3054c4 1427static DRIVER_ATTR_RW(bluetooth_emulstate);
a73f3091
HMH		 1428
1429/* wwan_emulstate ------------------------------------------------- */
ac3054c4 1430static ssize_t wwan_emulstate_show(struct device_driver *drv, char *buf)
a73f3091 1431{
33ce79be 1432 return sysfs_emit(buf, "%d\n", !!tpacpi_wwan_emulstate);
a73f3091
HMH		 1433}
1434
ac3054c4
GKH		 1435static ssize_t wwan_emulstate_store(struct device_driver *drv, const char *buf,
1436 size_t count)
a73f3091
HMH		 1437{
1438 unsigned long t;
1439
1440 if (parse_strtoul(buf, 1, &t))
1441 return -EINVAL;
1442
1443 tpacpi_wwan_emulstate = !!t;
1444
1445 return count;
1446}
ac3054c4 1447static DRIVER_ATTR_RW(wwan_emulstate);
a73f3091 1448
0045c0aa 1449/* uwb_emulstate ------------------------------------------------- */
ac3054c4 1450static ssize_t uwb_emulstate_show(struct device_driver *drv, char *buf)
0045c0aa 1451{
33ce79be 1452 return sysfs_emit(buf, "%d\n", !!tpacpi_uwb_emulstate);
0045c0aa
HMH		 1453}
1454
ac3054c4
GKH		 1455static ssize_t uwb_emulstate_store(struct device_driver *drv, const char *buf,
1456 size_t count)
0045c0aa
HMH		 1457{
1458 unsigned long t;
1459
1460 if (parse_strtoul(buf, 1, &t))
1461 return -EINVAL;
1462
1463 tpacpi_uwb_emulstate = !!t;
1464
1465 return count;
1466}
ac3054c4 1467static DRIVER_ATTR_RW(uwb_emulstate);
a73f3091
HMH		 1468#endif
1469
600a99fa
HMH		 1470/*************************************************************************
1471 * Firmware Data
1472 */
1473
1474/*
1475 * Table of recommended minimum BIOS versions
1476 *
1477 * Reasons for listing:
9ddc5b6f 1478 * 1. Stable BIOS, listed because the unknown amount of
600a99fa
HMH		 1479 * bugs and bad ACPI behaviour on older versions
1480 *
1481 * 2. BIOS or EC fw with known bugs that trigger on Linux
1482 *
1483 * 3. BIOS with known reduced functionality in older versions
1484 *
1485 * We recommend the latest BIOS and EC version.
1486 * We only support the latest BIOS and EC fw version as a rule.
1487 *
1488 * Sources: IBM ThinkPad Public Web Documents (update changelogs),
1489 * Information from users in ThinkWiki
e675abaf
HMH		 1490 *
1491 * WARNING: we use this table also to detect that the machine is
1492 * a ThinkPad in some cases, so don't remove entries lightly.
600a99fa
HMH		 1493 */
1494
1495#define TPV_Q(__v, __id1, __id2, __bv1, __bv2) \
1496 { .vendor = (__v), \
1497 .bios = TPID(__id1, __id2), \
1498 .ec = TPACPI_MATCH_ANY, \
846a416b
JW		 1499 .quirks = TPACPI_MATCH_ANY_VERSION << 16 \
1500 | TPVER(__bv1, __bv2) }
600a99fa
HMH		 1501
1502#define TPV_Q_X(__v, __bid1, __bid2, __bv1, __bv2, \
275014ae 1503 __eid, __ev1, __ev2) \
600a99fa
HMH		 1504 { .vendor = (__v), \
1505 .bios = TPID(__bid1, __bid2), \
275014ae 1506 .ec = __eid, \
846a416b
JW		 1507 .quirks = TPVER(__ev1, __ev2) << 16 \
1508 | TPVER(__bv1, __bv2) }
600a99fa
HMH		 1509
1510#define TPV_QI0(__id1, __id2, __bv1, __bv2) \
1511 TPV_Q(PCI_VENDOR_ID_IBM, __id1, __id2, __bv1, __bv2)
1512
275014ae 1513/* Outdated IBM BIOSes often lack the EC id string */
600a99fa
HMH		 1514#define TPV_QI1(__id1, __id2, __bv1, __bv2, __ev1, __ev2) \
1515 TPV_Q_X(PCI_VENDOR_ID_IBM, __id1, __id2, \
275014ae
HMH		 1516 __bv1, __bv2, TPID(__id1, __id2), \
1517 __ev1, __ev2), \
1518 TPV_Q_X(PCI_VENDOR_ID_IBM, __id1, __id2, \
1519 __bv1, __bv2, TPACPI_MATCH_UNKNOWN, \
1520 __ev1, __ev2)
600a99fa 1521
275014ae 1522/* Outdated IBM BIOSes often lack the EC id string */
600a99fa
HMH		 1523#define TPV_QI2(__bid1, __bid2, __bv1, __bv2, \
1524 __eid1, __eid2, __ev1, __ev2) \
1525 TPV_Q_X(PCI_VENDOR_ID_IBM, __bid1, __bid2, \
275014ae
HMH		 1526 __bv1, __bv2, TPID(__eid1, __eid2), \
1527 __ev1, __ev2), \
1528 TPV_Q_X(PCI_VENDOR_ID_IBM, __bid1, __bid2, \
1529 __bv1, __bv2, TPACPI_MATCH_UNKNOWN, \
1530 __ev1, __ev2)
600a99fa
HMH		 1531
1532#define TPV_QL0(__id1, __id2, __bv1, __bv2) \
1533 TPV_Q(PCI_VENDOR_ID_LENOVO, __id1, __id2, __bv1, __bv2)
1534
1535#define TPV_QL1(__id1, __id2, __bv1, __bv2, __ev1, __ev2) \
1536 TPV_Q_X(PCI_VENDOR_ID_LENOVO, __id1, __id2, \
275014ae
HMH		 1537 __bv1, __bv2, TPID(__id1, __id2), \
1538 __ev1, __ev2)
600a99fa
HMH		 1539
1540#define TPV_QL2(__bid1, __bid2, __bv1, __bv2, \
1541 __eid1, __eid2, __ev1, __ev2) \
1542 TPV_Q_X(PCI_VENDOR_ID_LENOVO, __bid1, __bid2, \
275014ae
HMH		 1543 __bv1, __bv2, TPID(__eid1, __eid2), \
1544 __ev1, __ev2)
600a99fa
HMH		 1545
1546static const struct tpacpi_quirk tpacpi_bios_version_qtable[] __initconst = {
1547 /* Numeric models ------------------ */
1548 /* FW MODEL BIOS VERS */
1549 TPV_QI0('I', 'M', '6', '5'), /* 570 */
1550 TPV_QI0('I', 'U', '2', '6'), /* 570E */
1551 TPV_QI0('I', 'B', '5', '4'), /* 600 */
1552 TPV_QI0('I', 'H', '4', '7'), /* 600E */
1553 TPV_QI0('I', 'N', '3', '6'), /* 600E */
1554 TPV_QI0('I', 'T', '5', '5'), /* 600X */
1555 TPV_QI0('I', 'D', '4', '8'), /* 770, 770E, 770ED */
1556 TPV_QI0('I', 'I', '4', '2'), /* 770X */
1557 TPV_QI0('I', 'O', '2', '3'), /* 770Z */
1558
1559 /* A-series ------------------------- */
1560 /* FW MODEL BIOS VERS EC VERS */
1561 TPV_QI0('I', 'W', '5', '9'), /* A20m */
1562 TPV_QI0('I', 'V', '6', '9'), /* A20p */
1563 TPV_QI0('1', '0', '2', '6'), /* A21e, A22e */
1564 TPV_QI0('K', 'U', '3', '6'), /* A21e */
1565 TPV_QI0('K', 'X', '3', '6'), /* A21m, A22m */
1566 TPV_QI0('K', 'Y', '3', '8'), /* A21p, A22p */
1567 TPV_QI0('1', 'B', '1', '7'), /* A22e */
1568 TPV_QI0('1', '3', '2', '0'), /* A22m */
1569 TPV_QI0('1', 'E', '7', '3'), /* A30/p (0) */
1570 TPV_QI1('1', 'G', '4', '1', '1', '7'), /* A31/p (0) */
1571 TPV_QI1('1', 'N', '1', '6', '0', '7'), /* A31/p (0) */
1572
1573 /* G-series ------------------------- */
1574 /* FW MODEL BIOS VERS */
1575 TPV_QI0('1', 'T', 'A', '6'), /* G40 */
1576 TPV_QI0('1', 'X', '5', '7'), /* G41 */
1577
1578 /* R-series, T-series --------------- */
1579 /* FW MODEL BIOS VERS EC VERS */
1580 TPV_QI0('1', 'C', 'F', '0'), /* R30 */
1581 TPV_QI0('1', 'F', 'F', '1'), /* R31 */
1582 TPV_QI0('1', 'M', '9', '7'), /* R32 */
1583 TPV_QI0('1', 'O', '6', '1'), /* R40 */
1584 TPV_QI0('1', 'P', '6', '5'), /* R40 */
1585 TPV_QI0('1', 'S', '7', '0'), /* R40e */
1586 TPV_QI1('1', 'R', 'D', 'R', '7', '1'), /* R50/p, R51,
1587 T40/p, T41/p, T42/p (1) */
1588 TPV_QI1('1', 'V', '7', '1', '2', '8'), /* R50e, R51 (1) */
1589 TPV_QI1('7', '8', '7', '1', '0', '6'), /* R51e (1) */
1590 TPV_QI1('7', '6', '6', '9', '1', '6'), /* R52 (1) */
1591 TPV_QI1('7', '0', '6', '9', '2', '8'), /* R52, T43 (1) */
1592
1593 TPV_QI0('I', 'Y', '6', '1'), /* T20 */
1594 TPV_QI0('K', 'Z', '3', '4'), /* T21 */
1595 TPV_QI0('1', '6', '3', '2'), /* T22 */
1596 TPV_QI1('1', 'A', '6', '4', '2', '3'), /* T23 (0) */
1597 TPV_QI1('1', 'I', '7', '1', '2', '0'), /* T30 (0) */
1598 TPV_QI1('1', 'Y', '6', '5', '2', '9'), /* T43/p (1) */
1599
1600 TPV_QL1('7', '9', 'E', '3', '5', '0'), /* T60/p */
1601 TPV_QL1('7', 'C', 'D', '2', '2', '2'), /* R60, R60i */
90765c6a 1602 TPV_QL1('7', 'E', 'D', '0', '1', '5'), /* R60e, R60i */
600a99fa
HMH		 1603
1604 /* BIOS FW BIOS VERS EC FW EC VERS */
1605 TPV_QI2('1', 'W', '9', '0', '1', 'V', '2', '8'), /* R50e (1) */
1606 TPV_QL2('7', 'I', '3', '4', '7', '9', '5', '0'), /* T60/p wide */
1607
1608 /* X-series ------------------------- */
1609 /* FW MODEL BIOS VERS EC VERS */
1610 TPV_QI0('I', 'Z', '9', 'D'), /* X20, X21 */
1611 TPV_QI0('1', 'D', '7', '0'), /* X22, X23, X24 */
1612 TPV_QI1('1', 'K', '4', '8', '1', '8'), /* X30 (0) */
1613 TPV_QI1('1', 'Q', '9', '7', '2', '3'), /* X31, X32 (0) */
1614 TPV_QI1('1', 'U', 'D', '3', 'B', '2'), /* X40 (0) */
1615 TPV_QI1('7', '4', '6', '4', '2', '7'), /* X41 (0) */
1616 TPV_QI1('7', '5', '6', '0', '2', '0'), /* X41t (0) */
1617
90765c6a
HMH		 1618 TPV_QL1('7', 'B', 'D', '7', '4', '0'), /* X60/s */
1619 TPV_QL1('7', 'J', '3', '0', '1', '3'), /* X60t */
600a99fa
HMH		 1620
1621 /* (0) - older versions lack DMI EC fw string and functionality */
1622 /* (1) - older versions known to lack functionality */
1623};
1624
1625#undef TPV_QL1
1626#undef TPV_QL0
1627#undef TPV_QI2
1628#undef TPV_QI1
1629#undef TPV_QI0
1630#undef TPV_Q_X
1631#undef TPV_Q
1632
1633static void __init tpacpi_check_outdated_fw(void)
1634{
1635 unsigned long fwvers;
1636 u16 ec_version, bios_version;
1637
1638 fwvers = tpacpi_check_quirks(tpacpi_bios_version_qtable,
1639 ARRAY_SIZE(tpacpi_bios_version_qtable));
1640
1641 if (!fwvers)
1642 return;
1643
1644 bios_version = fwvers & 0xffffU;
1645 ec_version = (fwvers >> 16) & 0xffffU;
1646
1647 /* note that unknown versions are set to 0x0000 and we use that */
1648 if ((bios_version > thinkpad_id.bios_release) ||
1649 (ec_version > thinkpad_id.ec_release &&
846a416b 1650 ec_version != TPACPI_MATCH_ANY_VERSION)) {
600a99fa
HMH		 1651 /*
1652 * The changelogs would let us track down the exact
1653 * reason, but it is just too much of a pain to track
1654 * it. We only list BIOSes that are either really
1655 * broken, or really stable to begin with, so it is
1656 * best if the user upgrades the firmware anyway.
1657 */
0978e012 1658 pr_warn("WARNING: Outdated ThinkPad BIOS/EC firmware\n");
5cac62ac 1659 pr_warn("WARNING: This firmware may be missing critical bug fixes and/or important features\n");
600a99fa
HMH		 1660 }
1661}
1662
e675abaf
HMH		 1663static bool __init tpacpi_is_fw_known(void)
1664{
1665 return tpacpi_check_quirks(tpacpi_bios_version_qtable,
1666 ARRAY_SIZE(tpacpi_bios_version_qtable)) != 0;
1667}
1668
b21a15f6
HMH		 1669/****************************************************************************
1670 ****************************************************************************
1671 *
1672 * Subdrivers
1673 *
1674 ****************************************************************************
1675 ****************************************************************************/
1676
1677/*************************************************************************
7a43f788 1678 * thinkpad-acpi metadata subdriver
b21a15f6
HMH		 1679 */
1680
887965e6 1681static int thinkpad_acpi_driver_read(struct seq_file *m)
1da177e4 1682{
887965e6
AD		 1683 seq_printf(m, "driver:\t\t%s\n", TPACPI_DESC);
1684 seq_printf(m, "version:\t%s\n", TPACPI_VERSION);
1685 return 0;
1da177e4
LT		 1686}
1687
a5763f22
HMH		 1688static struct ibm_struct thinkpad_acpi_driver_data = {
1689 .name = "driver",
1690 .read = thinkpad_acpi_driver_read,
1691};
1692
56b6aeb0
HMH		 1693/*************************************************************************
1694 * Hotkey subdriver
1695 */
1696
0d922e3b
HMH		 1697/*
1698 * ThinkPad firmware event model
1699 *
1700 * The ThinkPad firmware has two main event interfaces: normal ACPI
1701 * notifications (which follow the ACPI standard), and a private event
1702 * interface.
1703 *
1704 * The private event interface also issues events for the hotkeys. As
1705 * the driver gained features, the event handling code ended up being
1706 * built around the hotkey subdriver. This will need to be refactored
1707 * to a more formal event API eventually.
1708 *
1709 * Some "hotkeys" are actually supposed to be used as event reports,
1710 * such as "brightness has changed", "volume has changed", depending on
1711 * the ThinkPad model and how the firmware is operating.
1712 *
1713 * Unlike other classes, hotkey-class events have mask/unmask control on
1714 * non-ancient firmware. However, how it behaves changes a lot with the
1715 * firmware model and version.
1716 */
1717
f74a27d4
HMH		 1718enum { /* hot key scan codes (derived from ACPI DSDT) */
1719 TP_ACPI_HOTKEYSCAN_FNF1 = 0,
1720 TP_ACPI_HOTKEYSCAN_FNF2,
1721 TP_ACPI_HOTKEYSCAN_FNF3,
1722 TP_ACPI_HOTKEYSCAN_FNF4,
1723 TP_ACPI_HOTKEYSCAN_FNF5,
1724 TP_ACPI_HOTKEYSCAN_FNF6,
1725 TP_ACPI_HOTKEYSCAN_FNF7,
1726 TP_ACPI_HOTKEYSCAN_FNF8,
1727 TP_ACPI_HOTKEYSCAN_FNF9,
1728 TP_ACPI_HOTKEYSCAN_FNF10,
1729 TP_ACPI_HOTKEYSCAN_FNF11,
1730 TP_ACPI_HOTKEYSCAN_FNF12,
1731 TP_ACPI_HOTKEYSCAN_FNBACKSPACE,
1732 TP_ACPI_HOTKEYSCAN_FNINSERT,
1733 TP_ACPI_HOTKEYSCAN_FNDELETE,
1734 TP_ACPI_HOTKEYSCAN_FNHOME,
1735 TP_ACPI_HOTKEYSCAN_FNEND,
1736 TP_ACPI_HOTKEYSCAN_FNPAGEUP,
1737 TP_ACPI_HOTKEYSCAN_FNPAGEDOWN,
1738 TP_ACPI_HOTKEYSCAN_FNSPACE,
1739 TP_ACPI_HOTKEYSCAN_VOLUMEUP,
1740 TP_ACPI_HOTKEYSCAN_VOLUMEDOWN,
1741 TP_ACPI_HOTKEYSCAN_MUTE,
1742 TP_ACPI_HOTKEYSCAN_THINKPAD,
34a656d2
HMH		 1743 TP_ACPI_HOTKEYSCAN_UNK1,
1744 TP_ACPI_HOTKEYSCAN_UNK2,
1745 TP_ACPI_HOTKEYSCAN_UNK3,
1746 TP_ACPI_HOTKEYSCAN_UNK4,
1747 TP_ACPI_HOTKEYSCAN_UNK5,
1748 TP_ACPI_HOTKEYSCAN_UNK6,
1749 TP_ACPI_HOTKEYSCAN_UNK7,
1750 TP_ACPI_HOTKEYSCAN_UNK8,
1751
149c8c75
CK		 1752 /* Adaptive keyboard keycodes */
1753 TP_ACPI_HOTKEYSCAN_ADAPTIVE_START,
1754 TP_ACPI_HOTKEYSCAN_MUTE2 = TP_ACPI_HOTKEYSCAN_ADAPTIVE_START,
6a68d855
BN		 1755 TP_ACPI_HOTKEYSCAN_BRIGHTNESS_ZERO,
1756 TP_ACPI_HOTKEYSCAN_CLIPPING_TOOL,
1757 TP_ACPI_HOTKEYSCAN_CLOUD,
1758 TP_ACPI_HOTKEYSCAN_UNK9,
1759 TP_ACPI_HOTKEYSCAN_VOICE,
1760 TP_ACPI_HOTKEYSCAN_UNK10,
1761 TP_ACPI_HOTKEYSCAN_GESTURES,
1762 TP_ACPI_HOTKEYSCAN_UNK11,
1763 TP_ACPI_HOTKEYSCAN_UNK12,
1764 TP_ACPI_HOTKEYSCAN_UNK13,
1765 TP_ACPI_HOTKEYSCAN_CONFIG,
1766 TP_ACPI_HOTKEYSCAN_NEW_TAB,
1767 TP_ACPI_HOTKEYSCAN_RELOAD,
1768 TP_ACPI_HOTKEYSCAN_BACK,
1769 TP_ACPI_HOTKEYSCAN_MIC_DOWN,
1770 TP_ACPI_HOTKEYSCAN_MIC_UP,
1771 TP_ACPI_HOTKEYSCAN_MIC_CANCELLATION,
1772 TP_ACPI_HOTKEYSCAN_CAMERA_MODE,
1773 TP_ACPI_HOTKEYSCAN_ROTATE_DISPLAY,
1774
696c6523
CK		 1775 /* Lenovo extended keymap, starting at 0x1300 */
1776 TP_ACPI_HOTKEYSCAN_EXTENDED_START,
1777 /* first new observed key (star, favorites) is 0x1311 */
1778 TP_ACPI_HOTKEYSCAN_STAR = 69,
1779 TP_ACPI_HOTKEYSCAN_CLIPPING_TOOL2,
cb5c1978 1780 TP_ACPI_HOTKEYSCAN_CALCULATOR,
696c6523
CK		 1781 TP_ACPI_HOTKEYSCAN_BLUETOOTH,
1782 TP_ACPI_HOTKEYSCAN_KEYBOARD,
7ed7748d
HG		 1783 TP_ACPI_HOTKEYSCAN_FN_RIGHT_SHIFT, /* Used by "Lenovo Quick Clean" */
1784 TP_ACPI_HOTKEYSCAN_NOTIFICATION_CENTER,
1785 TP_ACPI_HOTKEYSCAN_PICKUP_PHONE,
1786 TP_ACPI_HOTKEYSCAN_HANGUP_PHONE,
696c6523 1787
34a656d2
HMH		 1788 /* Hotkey keymap size */
1789 TPACPI_HOTKEY_MAP_LEN
f74a27d4
HMH		 1790};
1791
0d922e3b 1792enum { /* Keys/events available through NVRAM polling */
01e88f25
HMH		 1793 TPACPI_HKEY_NVRAM_KNOWN_MASK = 0x00fb88c0U,
1794 TPACPI_HKEY_NVRAM_GOOD_MASK = 0x00fb8000U,
1795};
1796
1797enum { /* Positions of some of the keys in hotkey masks */
1798 TP_ACPI_HKEY_DISPSWTCH_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNF7,
1799 TP_ACPI_HKEY_DISPXPAND_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNF8,
1800 TP_ACPI_HKEY_HIBERNATE_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNF12,
1801 TP_ACPI_HKEY_BRGHTUP_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNHOME,
1802 TP_ACPI_HKEY_BRGHTDWN_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNEND,
c685e20d 1803 TP_ACPI_HKEY_KBD_LIGHT_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNPAGEUP,
01e88f25
HMH		 1804 TP_ACPI_HKEY_ZOOM_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNSPACE,
1805 TP_ACPI_HKEY_VOLUP_MASK = 1 << TP_ACPI_HOTKEYSCAN_VOLUMEUP,
1806 TP_ACPI_HKEY_VOLDWN_MASK = 1 << TP_ACPI_HOTKEYSCAN_VOLUMEDOWN,
1807 TP_ACPI_HKEY_MUTE_MASK = 1 << TP_ACPI_HOTKEYSCAN_MUTE,
1808 TP_ACPI_HKEY_THINKPAD_MASK = 1 << TP_ACPI_HOTKEYSCAN_THINKPAD,
1809};
1810
1811enum { /* NVRAM to ACPI HKEY group map */
1812 TP_NVRAM_HKEY_GROUP_HK2 = TP_ACPI_HKEY_THINKPAD_MASK |
1813 TP_ACPI_HKEY_ZOOM_MASK |
1814 TP_ACPI_HKEY_DISPSWTCH_MASK |
1815 TP_ACPI_HKEY_HIBERNATE_MASK,
1816 TP_NVRAM_HKEY_GROUP_BRIGHTNESS = TP_ACPI_HKEY_BRGHTUP_MASK |
1817 TP_ACPI_HKEY_BRGHTDWN_MASK,
1818 TP_NVRAM_HKEY_GROUP_VOLUME = TP_ACPI_HKEY_VOLUP_MASK |
1819 TP_ACPI_HKEY_VOLDWN_MASK |
1820 TP_ACPI_HKEY_MUTE_MASK,
1821};
1822
1823#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
1824struct tp_nvram_state {
1825 u16 thinkpad_toggle:1;
1826 u16 zoom_toggle:1;
1827 u16 display_toggle:1;
1828 u16 thinklight_toggle:1;
1829 u16 hibernate_toggle:1;
1830 u16 displayexp_toggle:1;
1831 u16 display_state:1;
1832 u16 brightness_toggle:1;
1833 u16 volume_toggle:1;
1834 u16 mute:1;
1835
1836 u8 brightness_level;
1837 u8 volume_level;
1838};
1839
db25f16d 1840/* kthread for the hotkey poller */
01e88f25 1841static struct task_struct *tpacpi_hotkey_task;
db25f16d 1842
db25f16d 1843/*
0d922e3b
HMH		 1844 * Acquire mutex to write poller control variables as an
1845 * atomic block.
1846 *
1847 * Increment hotkey_config_change when changing them if you
1848 * want the kthread to forget old state.
db25f16d
HMH		 1849 *
1850 * See HOTKEY_CONFIG_CRITICAL_START/HOTKEY_CONFIG_CRITICAL_END
1851 */
01e88f25
HMH		 1852static struct mutex hotkey_thread_data_mutex;
1853static unsigned int hotkey_config_change;
1854
db25f16d
HMH		 1855/*
1856 * hotkey poller control variables
1857 *
1858 * Must be atomic or readers will also need to acquire mutex
0d922e3b
HMH		 1859 *
1860 * HOTKEY_CONFIG_CRITICAL_START/HOTKEY_CONFIG_CRITICAL_END
1861 * should be used only when the changes need to be taken as
1862 * a block, OR when one needs to force the kthread to forget
1863 * old state.
db25f16d
HMH		 1864 */
1865static u32 hotkey_source_mask; /* bit mask 0=ACPI,1=NVRAM */
1866static unsigned int hotkey_poll_freq = 10; /* Hz */
1867
1868#define HOTKEY_CONFIG_CRITICAL_START \
1869 do { \
1870 mutex_lock(&hotkey_thread_data_mutex); \
1871 hotkey_config_change++; \
1872 } while (0);
1873#define HOTKEY_CONFIG_CRITICAL_END \
1874 mutex_unlock(&hotkey_thread_data_mutex);
1875
01e88f25
HMH		 1876#else /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
1877
1878#define hotkey_source_mask 0U
db25f16d
HMH		 1879#define HOTKEY_CONFIG_CRITICAL_START
1880#define HOTKEY_CONFIG_CRITICAL_END
01e88f25
HMH		 1881
1882#endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
1883
f74a27d4
HMH		 1884static struct mutex hotkey_mutex;
1885
a713b4d7
HMH		 1886static enum { /* Reasons for waking up */
1887 TP_ACPI_WAKEUP_NONE = 0, /* None or unknown */
1888 TP_ACPI_WAKEUP_BAYEJ, /* Bay ejection request */
1889 TP_ACPI_WAKEUP_UNDOCK, /* Undock request */
1890} hotkey_wakeup_reason;
1891
1892static int hotkey_autosleep_ack;
1893
0d922e3b
HMH		 1894static u32 hotkey_orig_mask; /* events the BIOS had enabled */
1895static u32 hotkey_all_mask; /* all events supported in fw */
0118c2d3 1896static u32 hotkey_adaptive_all_mask; /* all adaptive events supported in fw */
0d922e3b
HMH		 1897static u32 hotkey_reserved_mask; /* events better left disabled */
1898static u32 hotkey_driver_mask; /* events needed by the driver */
1899static u32 hotkey_user_mask; /* events visible to userspace */
1900static u32 hotkey_acpi_mask; /* events enabled in firmware */
6a38abbf 1901
edf0e0e5 1902static u16 *hotkey_keycode_map;
78f81cc4 1903
8b468c0c
HMH		 1904static void tpacpi_driver_event(const unsigned int hkey_event);
1905static void hotkey_driver_event(const unsigned int scancode);
7f0cf712 1906static void hotkey_poll_setup(const bool may_warn);
8b468c0c 1907
6c231bd5
HMH		 1908/* HKEY.MHKG() return bits */
1909#define TP_HOTKEY_TABLET_MASK (1 << 3)
dda3ec0a
BB		 1910enum {
1911 TP_ACPI_MULTI_MODE_INVALID = 0,
1912 TP_ACPI_MULTI_MODE_UNKNOWN = 1 << 0,
1913 TP_ACPI_MULTI_MODE_LAPTOP = 1 << 1,
1914 TP_ACPI_MULTI_MODE_TABLET = 1 << 2,
1915 TP_ACPI_MULTI_MODE_FLAT = 1 << 3,
1916 TP_ACPI_MULTI_MODE_STAND = 1 << 4,
1917 TP_ACPI_MULTI_MODE_TENT = 1 << 5,
1918 TP_ACPI_MULTI_MODE_STAND_TENT = 1 << 6,
1919};
1920
1921enum {
1922 /* The following modes are considered tablet mode for the purpose of
1923 * reporting the status to userspace. i.e. in all these modes it makes
1924 * sense to disable the laptop input devices such as touchpad and
1925 * keyboard.
1926 */
1927 TP_ACPI_MULTI_MODE_TABLET_LIKE = TP_ACPI_MULTI_MODE_TABLET |
1928 TP_ACPI_MULTI_MODE_STAND |
1929 TP_ACPI_MULTI_MODE_TENT |
1930 TP_ACPI_MULTI_MODE_STAND_TENT,
1931};
6c231bd5 1932
19d337df 1933static int hotkey_get_wlsw(void)
74941a69 1934{
19d337df
JB		 1935 int status;
1936
1937 if (!tp_features.hotkey_wlsw)
1938 return -ENODEV;
1939
a73f3091 1940#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
19d337df
JB		 1941 if (dbg_wlswemul)
1942 return (tpacpi_wlsw_emulstate) ?
1943 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF;
a73f3091 1944#endif
19d337df
JB		 1945
1946 if (!acpi_evalf(hkey_handle, &status, "WLSW", "d"))
74941a69 1947 return -EIO;
19d337df
JB		 1948
1949 return (status) ? TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF;
74941a69
HMH		 1950}
1951
dda3ec0a
BB		 1952static int hotkey_gmms_get_tablet_mode(int s, int *has_tablet_mode)
1953{
1954 int type = (s >> 16) & 0xffff;
1955 int value = s & 0xffff;
1956 int mode = TP_ACPI_MULTI_MODE_INVALID;
1957 int valid_modes = 0;
1958
1959 if (has_tablet_mode)
1960 *has_tablet_mode = 0;
1961
1962 switch (type) {
1963 case 1:
1964 valid_modes = TP_ACPI_MULTI_MODE_LAPTOP |
1965 TP_ACPI_MULTI_MODE_TABLET |
1966 TP_ACPI_MULTI_MODE_STAND_TENT;
1967 break;
1968 case 2:
1969 valid_modes = TP_ACPI_MULTI_MODE_LAPTOP |
1970 TP_ACPI_MULTI_MODE_FLAT |
1971 TP_ACPI_MULTI_MODE_TABLET |
1972 TP_ACPI_MULTI_MODE_STAND |
1973 TP_ACPI_MULTI_MODE_TENT;
1974 break;
1975 case 3:
1976 valid_modes = TP_ACPI_MULTI_MODE_LAPTOP |
1977 TP_ACPI_MULTI_MODE_FLAT;
1978 break;
1979 case 4:
dda3ec0a 1980 case 5:
26befef0
BB		 1981 /* In mode 4, FLAT is not specified as a valid mode. However,
1982 * it can be seen at least on the X1 Yoga 2nd Generation.
1983 */
dda3ec0a
BB		 1984 valid_modes = TP_ACPI_MULTI_MODE_LAPTOP |
1985 TP_ACPI_MULTI_MODE_FLAT |
1986 TP_ACPI_MULTI_MODE_TABLET |
1987 TP_ACPI_MULTI_MODE_STAND |
1988 TP_ACPI_MULTI_MODE_TENT;
1989 break;
1990 default:
1991 pr_err("Unknown multi mode status type %d with value 0x%04X, please report this to %s\n",
1992 type, value, TPACPI_MAIL);
1993 return 0;
1994 }
1995
1996 if (has_tablet_mode && (valid_modes & TP_ACPI_MULTI_MODE_TABLET_LIKE))
1997 *has_tablet_mode = 1;
1998
1999 switch (value) {
2000 case 1:
2001 mode = TP_ACPI_MULTI_MODE_LAPTOP;
2002 break;
2003 case 2:
2004 mode = TP_ACPI_MULTI_MODE_FLAT;
2005 break;
2006 case 3:
2007 mode = TP_ACPI_MULTI_MODE_TABLET;
2008 break;
2009 case 4:
2010 if (type == 1)
2011 mode = TP_ACPI_MULTI_MODE_STAND_TENT;
2012 else
2013 mode = TP_ACPI_MULTI_MODE_STAND;
2014 break;
2015 case 5:
2016 mode = TP_ACPI_MULTI_MODE_TENT;
2017 break;
2018 default:
2019 if (type == 5 && value == 0xffff) {
2020 pr_warn("Multi mode status is undetected, assuming laptop\n");
2021 return 0;
2022 }
2023 }
2024
2025 if (!(mode & valid_modes)) {
2026 pr_err("Unknown/reserved multi mode value 0x%04X for type %d, please report this to %s\n",
2027 value, type, TPACPI_MAIL);
2028 return 0;
2029 }
2030
2031 return !!(mode & TP_ACPI_MULTI_MODE_TABLET_LIKE);
2032}
2033
6c231bd5
HMH		 2034static int hotkey_get_tablet_mode(int *status)
2035{
2036 int s;
2037
b03f4d49
L		 2038 switch (tp_features.hotkey_tablet) {
2039 case TP_HOTKEY_TABLET_USES_MHKG:
2040 if (!acpi_evalf(hkey_handle, &s, "MHKG", "d"))
2041 return -EIO;
2042
2043 *status = ((s & TP_HOTKEY_TABLET_MASK) != 0);
2044 break;
dda3ec0a
BB		 2045 case TP_HOTKEY_TABLET_USES_GMMS:
2046 if (!acpi_evalf(hkey_handle, &s, "GMMS", "dd", 0))
b03f4d49
L		 2047 return -EIO;
2048
dda3ec0a 2049 *status = hotkey_gmms_get_tablet_mode(s, NULL);
b03f4d49
L		 2050 break;
2051 default:
2052 break;
2053 }
6c231bd5 2054
cee47f5a 2055 return 0;
6c231bd5
HMH		 2056}
2057
b2c985e7 2058/*
0d922e3b
HMH		 2059 * Reads current event mask from firmware, and updates
2060 * hotkey_acpi_mask accordingly. Also resets any bits
2061 * from hotkey_user_mask that are unavailable to be
2062 * delivered (shadow requirement of the userspace ABI).
b2c985e7
HMH		 2063 */
2064static int hotkey_mask_get(void)
2065{
38831eaf
TW		 2066 lockdep_assert_held(&hotkey_mutex);
2067
b2c985e7 2068 if (tp_features.hotkey_mask) {
0d922e3b
HMH		 2069 u32 m = 0;
2070
01e88f25 2071 if (!acpi_evalf(hkey_handle, &m, "DHKN", "d"))
b2c985e7 2072 return -EIO;
0d922e3b
HMH		 2073
2074 hotkey_acpi_mask = m;
2075 } else {
2076 /* no mask support doesn't mean no event support... */
2077 hotkey_acpi_mask = hotkey_all_mask;
b2c985e7 2078 }
0d922e3b
HMH		 2079
2080 /* sync userspace-visible mask */
2081 hotkey_user_mask &= (hotkey_acpi_mask | hotkey_source_mask);
b2c985e7
HMH		 2082
2083 return 0;
2084}
2085
df6dd1b3 2086static void hotkey_mask_warn_incomplete_mask(void)
0d922e3b
HMH		 2087{
2088 /* log only what the user can fix... */
2089 const u32 wantedmask = hotkey_driver_mask &
2090 ~(hotkey_acpi_mask | hotkey_source_mask) &
2091 (hotkey_all_mask | TPACPI_HKEY_NVRAM_KNOWN_MASK);
2092
2093 if (wantedmask)
0978e012 2094 pr_notice("required events 0x%08x not enabled!\n", wantedmask);
0d922e3b
HMH		 2095}
2096
b2c985e7 2097/*
0d922e3b
HMH		 2098 * Set the firmware mask when supported
2099 *
2100 * Also calls hotkey_mask_get to update hotkey_acpi_mask.
2101 *
2102 * NOTE: does not set bits in hotkey_user_mask, but may reset them.
b2c985e7
HMH		 2103 */
2104static int hotkey_mask_set(u32 mask)
2105{
2106 int i;
2107 int rc = 0;
2108
0d922e3b 2109 const u32 fwmask = mask & ~hotkey_source_mask;
92889022 2110
38831eaf
TW		 2111 lockdep_assert_held(&hotkey_mutex);
2112
0d922e3b 2113 if (tp_features.hotkey_mask) {
b2c985e7 2114 for (i = 0; i < 32; i++) {
b2c985e7
HMH		 2115 if (!acpi_evalf(hkey_handle,
2116 NULL, "MHKM", "vdd", i + 1,
0d922e3b 2117 !!(mask & (1 << i)))) {
b2c985e7
HMH		 2118 rc = -EIO;
2119 break;
b2c985e7
HMH		 2120 }
2121 }
0d922e3b 2122 }
b2c985e7 2123
0d922e3b
HMH		 2124 /*
2125 * We *must* make an inconditional call to hotkey_mask_get to
2126 * refresh hotkey_acpi_mask and update hotkey_user_mask
2127 *
2128 * Take the opportunity to also log when we cannot _enable_
2129 * a given event.
2130 */
2131 if (!hotkey_mask_get() && !rc && (fwmask & ~hotkey_acpi_mask)) {
5cac62ac 2132 pr_notice("asked for hotkey mask 0x%08x, but firmware forced it to 0x%08x\n",
0978e012 2133 fwmask, hotkey_acpi_mask);
b2c985e7
HMH		 2134 }
2135
6b30eb7d
HMH		 2136 if (tpacpi_lifecycle != TPACPI_LIFE_EXITING)
2137 hotkey_mask_warn_incomplete_mask();
0d922e3b
HMH		 2138
2139 return rc;
2140}
2141
2142/*
2143 * Sets hotkey_user_mask and tries to set the firmware mask
0d922e3b
HMH		 2144 */
2145static int hotkey_user_mask_set(const u32 mask)
2146{
2147 int rc;
2148
38831eaf
TW		 2149 lockdep_assert_held(&hotkey_mutex);
2150
0d922e3b
HMH		 2151 /* Give people a chance to notice they are doing something that
2152 * is bound to go boom on their users sooner or later */
2153 if (!tp_warned.hotkey_mask_ff &&
2154 (mask == 0xffff || mask == 0xffffff ||
2155 mask == 0xffffffff)) {
2156 tp_warned.hotkey_mask_ff = 1;
5cac62ac
AS		 2157 pr_notice("setting the hotkey mask to 0x%08x is likely not the best way to go about it\n",
2158 mask);
2159 pr_notice("please consider using the driver defaults, and refer to up-to-date thinkpad-acpi documentation\n");
0d922e3b
HMH		 2160 }
2161
2162 /* Try to enable what the user asked for, plus whatever we need.
2163 * this syncs everything but won't enable bits in hotkey_user_mask */
2164 rc = hotkey_mask_set((mask | hotkey_driver_mask) & ~hotkey_source_mask);
2165
2166 /* Enable the available bits in hotkey_user_mask */
2167 hotkey_user_mask = mask & (hotkey_acpi_mask | hotkey_source_mask);
2168
b2c985e7
HMH		 2169 return rc;
2170}
2171
8b468c0c
HMH		 2172/*
2173 * Sets the driver hotkey mask.
2174 *
2175 * Can be called even if the hotkey subdriver is inactive
2176 */
2177static int tpacpi_hotkey_driver_mask_set(const u32 mask)
2178{
2179 int rc;
2180
2181 /* Do the right thing if hotkey_init has not been called yet */
2182 if (!tp_features.hotkey) {
2183 hotkey_driver_mask = mask;
2184 return 0;
2185 }
2186
2187 mutex_lock(&hotkey_mutex);
2188
2189 HOTKEY_CONFIG_CRITICAL_START
2190 hotkey_driver_mask = mask;
b684a363 2191#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
8b468c0c 2192 hotkey_source_mask |= (mask & ~hotkey_all_mask);
b684a363 2193#endif
8b468c0c
HMH		 2194 HOTKEY_CONFIG_CRITICAL_END
2195
2196 rc = hotkey_mask_set((hotkey_acpi_mask | hotkey_driver_mask) &
2197 ~hotkey_source_mask);
7f0cf712
HMH		 2198 hotkey_poll_setup(true);
2199
8b468c0c
HMH		 2200 mutex_unlock(&hotkey_mutex);
2201
2202 return rc;
2203}
2204
b2c985e7
HMH		 2205static int hotkey_status_get(int *status)
2206{
2207 if (!acpi_evalf(hkey_handle, status, "DHKC", "d"))
2208 return -EIO;
2209
2210 return 0;
2211}
2212
2586d566 2213static int hotkey_status_set(bool enable)
b2c985e7 2214{
2586d566 2215 if (!acpi_evalf(hkey_handle, NULL, "MHKC", "vd", enable ? 1 : 0))
b2c985e7
HMH		 2216 return -EIO;
2217
2218 return 0;
2219}
2220
6c231bd5 2221static void tpacpi_input_send_tabletsw(void)
b3ec6f91 2222{
6c231bd5 2223 int state;
b3ec6f91 2224
6c231bd5
HMH		 2225 if (tp_features.hotkey_tablet &&
2226 !hotkey_get_tablet_mode(&state)) {
2227 mutex_lock(&tpacpi_inputdev_send_mutex);
b3ec6f91 2228
6c231bd5
HMH		 2229 input_report_switch(tpacpi_inputdev,
2230 SW_TABLET_MODE, !!state);
2231 input_sync(tpacpi_inputdev);
2232
2233 mutex_unlock(&tpacpi_inputdev_send_mutex);
2234 }
b3ec6f91
HMH		 2235}
2236
0d922e3b
HMH		 2237/* Do NOT call without validating scancode first */
2238static void tpacpi_input_send_key(const unsigned int scancode)
b7c8c200 2239{
0d922e3b 2240 const unsigned int keycode = hotkey_keycode_map[scancode];
b7c8c200
HMH		 2241
2242 if (keycode != KEY_RESERVED) {
2243 mutex_lock(&tpacpi_inputdev_send_mutex);
2244
5ffba7e6 2245 input_event(tpacpi_inputdev, EV_MSC, MSC_SCAN, scancode);
b7c8c200 2246 input_report_key(tpacpi_inputdev, keycode, 1);
b7c8c200
HMH		 2247 input_sync(tpacpi_inputdev);
2248
5ffba7e6 2249 input_event(tpacpi_inputdev, EV_MSC, MSC_SCAN, scancode);
b7c8c200 2250 input_report_key(tpacpi_inputdev, keycode, 0);
b7c8c200
HMH		 2251 input_sync(tpacpi_inputdev);
2252
2253 mutex_unlock(&tpacpi_inputdev_send_mutex);
2254 }
2255}
2256
0d922e3b
HMH		 2257/* Do NOT call without validating scancode first */
2258static void tpacpi_input_send_key_masked(const unsigned int scancode)
2259{
8b468c0c 2260 hotkey_driver_event(scancode);
0d922e3b
HMH		 2261 if (hotkey_user_mask & (1 << scancode))
2262 tpacpi_input_send_key(scancode);
2263}
2264
01e88f25
HMH		 2265#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
2266static struct tp_acpi_drv_struct ibm_hotkey_acpidriver;
2267
0d922e3b 2268/* Do NOT call without validating scancode first */
01e88f25
HMH		 2269static void tpacpi_hotkey_send_key(unsigned int scancode)
2270{
0d922e3b 2271 tpacpi_input_send_key_masked(scancode);
01e88f25
HMH		 2272}
2273
0d922e3b 2274static void hotkey_read_nvram(struct tp_nvram_state *n, const u32 m)
01e88f25
HMH		 2275{
2276 u8 d;
2277
2278 if (m & TP_NVRAM_HKEY_GROUP_HK2) {
2279 d = nvram_read_byte(TP_NVRAM_ADDR_HK2);
2280 n->thinkpad_toggle = !!(d & TP_NVRAM_MASK_HKT_THINKPAD);
2281 n->zoom_toggle = !!(d & TP_NVRAM_MASK_HKT_ZOOM);
2282 n->display_toggle = !!(d & TP_NVRAM_MASK_HKT_DISPLAY);
2283 n->hibernate_toggle = !!(d & TP_NVRAM_MASK_HKT_HIBERNATE);
2284 }
c685e20d 2285 if (m & TP_ACPI_HKEY_KBD_LIGHT_MASK) {
01e88f25
HMH		 2286 d = nvram_read_byte(TP_NVRAM_ADDR_THINKLIGHT);
2287 n->thinklight_toggle = !!(d & TP_NVRAM_MASK_THINKLIGHT);
2288 }
2289 if (m & TP_ACPI_HKEY_DISPXPAND_MASK) {
2290 d = nvram_read_byte(TP_NVRAM_ADDR_VIDEO);
2291 n->displayexp_toggle =
2292 !!(d & TP_NVRAM_MASK_HKT_DISPEXPND);
2293 }
2294 if (m & TP_NVRAM_HKEY_GROUP_BRIGHTNESS) {
2295 d = nvram_read_byte(TP_NVRAM_ADDR_BRIGHTNESS);
2296 n->brightness_level = (d & TP_NVRAM_MASK_LEVEL_BRIGHTNESS)
2297 >> TP_NVRAM_POS_LEVEL_BRIGHTNESS;
2298 n->brightness_toggle =
2299 !!(d & TP_NVRAM_MASK_HKT_BRIGHTNESS);
2300 }
2301 if (m & TP_NVRAM_HKEY_GROUP_VOLUME) {
2302 d = nvram_read_byte(TP_NVRAM_ADDR_MIXER);
2303 n->volume_level = (d & TP_NVRAM_MASK_LEVEL_VOLUME)
2304 >> TP_NVRAM_POS_LEVEL_VOLUME;
2305 n->mute = !!(d & TP_NVRAM_MASK_MUTE);
2306 n->volume_toggle = !!(d & TP_NVRAM_MASK_HKT_VOLUME);
2307 }
2308}
2309
2310#define TPACPI_COMPARE_KEY(__scancode, __member) \
a4d44ba1
BW		 2311do { \
2312 if ((event_mask & (1 << __scancode)) && \
2313 oldn->__member != newn->__member) \
2314 tpacpi_hotkey_send_key(__scancode); \
2315} while (0)
01e88f25
HMH		 2316
2317#define TPACPI_MAY_SEND_KEY(__scancode) \
a4d44ba1
BW		 2318do { \
2319 if (event_mask & (1 << __scancode)) \
2320 tpacpi_hotkey_send_key(__scancode); \
2321} while (0)
2322
2323static void issue_volchange(const unsigned int oldvol,
2324 const unsigned int newvol,
2325 const u32 event_mask)
2326{
2327 unsigned int i = oldvol;
2328
2329 while (i > newvol) {
2330 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEDOWN);
2331 i--;
5d756db9 2332 }
a4d44ba1
BW		 2333 while (i < newvol) {
2334 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEUP);
2335 i++;
2336 }
2337}
5d756db9 2338
a4d44ba1
BW		 2339static void issue_brightnesschange(const unsigned int oldbrt,
2340 const unsigned int newbrt,
2341 const u32 event_mask)
2342{
2343 unsigned int i = oldbrt;
28999022 2344
a4d44ba1
BW		 2345 while (i > newbrt) {
2346 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNEND);
2347 i--;
28999022 2348 }
a4d44ba1
BW		 2349 while (i < newbrt) {
2350 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNHOME);
2351 i++;
2352 }
2353}
2354
2355static void hotkey_compare_and_issue_event(struct tp_nvram_state *oldn,
2356 struct tp_nvram_state *newn,
2357 const u32 event_mask)
2358{
28999022 2359
01e88f25
HMH		 2360 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_THINKPAD, thinkpad_toggle);
2361 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNSPACE, zoom_toggle);
2362 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNF7, display_toggle);
2363 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNF12, hibernate_toggle);
2364
2365 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNPAGEUP, thinklight_toggle);
2366
2367 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNF8, displayexp_toggle);
2368
5d756db9
HMH		 2369 /*
2370 * Handle volume
2371 *
2372 * This code is supposed to duplicate the IBM firmware behaviour:
2373 * - Pressing MUTE issues mute hotkey message, even when already mute
2374 * - Pressing Volume up/down issues volume up/down hotkey messages,
c8440336 2375 * even when already at maximum or minimum volume
5d756db9
HMH		 2376 * - The act of unmuting issues volume up/down notification,
2377 * depending which key was used to unmute
2378 *
2379 * We are constrained to what the NVRAM can tell us, which is not much
2380 * and certainly not enough if more than one volume hotkey was pressed
2381 * since the last poll cycle.
2382 *
2383 * Just to make our life interesting, some newer Lenovo ThinkPads have
2384 * bugs in the BIOS and may fail to update volume_toggle properly.
2385 */
2386 if (newn->mute) {
2387 /* muted */
2388 if (!oldn->mute ||
2389 oldn->volume_toggle != newn->volume_toggle ||
2390 oldn->volume_level != newn->volume_level) {
2391 /* recently muted, or repeated mute keypress, or
2392 * multiple presses ending in mute */
a4d44ba1
BW		 2393 issue_volchange(oldn->volume_level, newn->volume_level,
2394 event_mask);
01e88f25
HMH		 2395 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_MUTE);
2396 }
5d756db9
HMH		 2397 } else {
2398 /* unmute */
2399 if (oldn->mute) {
2400 /* recently unmuted, issue 'unmute' keypress */
01e88f25 2401 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEUP);
5d756db9
HMH		 2402 }
2403 if (oldn->volume_level != newn->volume_level) {
a4d44ba1
BW		 2404 issue_volchange(oldn->volume_level, newn->volume_level,
2405 event_mask);
5d756db9
HMH		 2406 } else if (oldn->volume_toggle != newn->volume_toggle) {
2407 /* repeated vol up/down keypress at end of scale ? */
2408 if (newn->volume_level == 0)
01e88f25 2409 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEDOWN);
5d756db9
HMH		 2410 else if (newn->volume_level >= TP_NVRAM_LEVEL_VOLUME_MAX)
2411 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEUP);
01e88f25
HMH		 2412 }
2413 }
2414
2415 /* handle brightness */
28999022
HMH		 2416 if (oldn->brightness_level != newn->brightness_level) {
2417 issue_brightnesschange(oldn->brightness_level,
a4d44ba1 2418 newn->brightness_level, event_mask);
28999022
HMH		 2419 } else if (oldn->brightness_toggle != newn->brightness_toggle) {
2420 /* repeated key presses that didn't change state */
2421 if (newn->brightness_level == 0)
01e88f25 2422 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNEND);
28999022
HMH		 2423 else if (newn->brightness_level >= bright_maxlvl
2424 && !tp_features.bright_unkfw)
2425 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNHOME);
01e88f25 2426 }
01e88f25
HMH		 2427
2428#undef TPACPI_COMPARE_KEY
2429#undef TPACPI_MAY_SEND_KEY
0d922e3b 2430}
01e88f25 2431
0d922e3b
HMH		 2432/*
2433 * Polling driver
2434 *
2435 * We track all events in hotkey_source_mask all the time, since
2436 * most of them are edge-based. We only issue those requested by
2437 * hotkey_user_mask or hotkey_driver_mask, though.
2438 */
01e88f25
HMH		 2439static int hotkey_kthread(void *data)
2440{
5f38b06d 2441 struct tp_nvram_state s[2] = { 0 };
0d922e3b 2442 u32 poll_mask, event_mask;
01e88f25
HMH		 2443 unsigned int si, so;
2444 unsigned long t;
8a32c441 2445 unsigned int change_detector;
db25f16d 2446 unsigned int poll_freq;
8a32c441 2447 bool was_frozen;
01e88f25 2448
01e88f25
HMH		 2449 if (tpacpi_lifecycle == TPACPI_LIFE_EXITING)
2450 goto exit;
2451
2452 set_freezable();
2453
2454 so = 0;
2455 si = 1;
2456 t = 0;
2457
2458 /* Initial state for compares */
2459 mutex_lock(&hotkey_thread_data_mutex);
2460 change_detector = hotkey_config_change;
0d922e3b
HMH		 2461 poll_mask = hotkey_source_mask;
2462 event_mask = hotkey_source_mask &
2463 (hotkey_driver_mask | hotkey_user_mask);
db25f16d 2464 poll_freq = hotkey_poll_freq;
01e88f25 2465 mutex_unlock(&hotkey_thread_data_mutex);
0d922e3b 2466 hotkey_read_nvram(&s[so], poll_mask);
01e88f25 2467
db25f16d
HMH		 2468 while (!kthread_should_stop()) {
2469 if (t == 0) {
2470 if (likely(poll_freq))
2471 t = 1000/poll_freq;
2472 else
2473 t = 100; /* should never happen... */
2474 }
01e88f25 2475 t = msleep_interruptible(t);
8a32c441 2476 if (unlikely(kthread_freezable_should_stop(&was_frozen)))
01e88f25 2477 break;
8a32c441
TH		 2478
2479 if (t > 0 && !was_frozen)
01e88f25
HMH		 2480 continue;
2481
2482 mutex_lock(&hotkey_thread_data_mutex);
8a32c441 2483 if (was_frozen || hotkey_config_change != change_detector) {
01e88f25
HMH		 2484 /* forget old state on thaw or config change */
2485 si = so;
2486 t = 0;
2487 change_detector = hotkey_config_change;
2488 }
0d922e3b
HMH		 2489 poll_mask = hotkey_source_mask;
2490 event_mask = hotkey_source_mask &
2491 (hotkey_driver_mask | hotkey_user_mask);
db25f16d 2492 poll_freq = hotkey_poll_freq;
01e88f25
HMH		 2493 mutex_unlock(&hotkey_thread_data_mutex);
2494
0d922e3b
HMH		 2495 if (likely(poll_mask)) {
2496 hotkey_read_nvram(&s[si], poll_mask);
01e88f25
HMH		 2497 if (likely(si != so)) {
2498 hotkey_compare_and_issue_event(&s[so], &s[si],
0d922e3b 2499 event_mask);
01e88f25
HMH		 2500 }
2501 }
2502
2503 so = si;
2504 si ^= 1;
2505 }
2506
2507exit:
01e88f25
HMH		 2508 return 0;
2509}
2510
2511static void hotkey_poll_stop_sync(void)
2512{
38831eaf
TW		 2513 lockdep_assert_held(&hotkey_mutex);
2514
01e88f25 2515 if (tpacpi_hotkey_task) {
01e88f25
HMH		 2516 kthread_stop(tpacpi_hotkey_task);
2517 tpacpi_hotkey_task = NULL;
01e88f25
HMH		 2518 }
2519}
2520
7f0cf712 2521static void hotkey_poll_setup(const bool may_warn)
01e88f25 2522{
0d922e3b
HMH		 2523 const u32 poll_driver_mask = hotkey_driver_mask & hotkey_source_mask;
2524 const u32 poll_user_mask = hotkey_user_mask & hotkey_source_mask;
db25f16d 2525
38831eaf
TW		 2526 lockdep_assert_held(&hotkey_mutex);
2527
0d922e3b
HMH		 2528 if (hotkey_poll_freq > 0 &&
2529 (poll_driver_mask ||
2530 (poll_user_mask && tpacpi_inputdev->users > 0))) {
01e88f25
HMH		 2531 if (!tpacpi_hotkey_task) {
2532 tpacpi_hotkey_task = kthread_run(hotkey_kthread,
95e57ab2 2533 NULL, TPACPI_NVRAM_KTHREAD_NAME);
01e88f25
HMH		 2534 if (IS_ERR(tpacpi_hotkey_task)) {
2535 tpacpi_hotkey_task = NULL;
5cac62ac 2536 pr_err("could not create kernel thread for hotkey polling\n");
01e88f25
HMH		 2537 }
2538 }
2539 } else {
2540 hotkey_poll_stop_sync();
0d922e3b 2541 if (may_warn && (poll_driver_mask || poll_user_mask) &&
db25f16d 2542 hotkey_poll_freq == 0) {
5cac62ac 2543 pr_notice("hot keys 0x%08x and/or events 0x%08x require polling, which is currently disabled\n",
0978e012 2544 poll_user_mask, poll_driver_mask);
01e88f25
HMH		 2545 }
2546 }
2547}
2548
7f0cf712 2549static void hotkey_poll_setup_safe(const bool may_warn)
01e88f25
HMH		 2550{
2551 mutex_lock(&hotkey_mutex);
2552 hotkey_poll_setup(may_warn);
2553 mutex_unlock(&hotkey_mutex);
2554}
2555
db25f16d
HMH		 2556static void hotkey_poll_set_freq(unsigned int freq)
2557{
38831eaf
TW		 2558 lockdep_assert_held(&hotkey_mutex);
2559
db25f16d
HMH		 2560 if (!freq)
2561 hotkey_poll_stop_sync();
2562
db25f16d 2563 hotkey_poll_freq = freq;
db25f16d
HMH		 2564}
2565
1bc6b9cd
HMH		 2566#else /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
2567
7f0cf712
HMH		 2568static void hotkey_poll_setup(const bool __unused)
2569{
2570}
2571
2572static void hotkey_poll_setup_safe(const bool __unused)
1bc6b9cd
HMH		 2573{
2574}
2575
2576#endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
2577
01e88f25
HMH		 2578static int hotkey_inputdev_open(struct input_dev *dev)
2579{
2580 switch (tpacpi_lifecycle) {
2581 case TPACPI_LIFE_INIT:
01e88f25 2582 case TPACPI_LIFE_RUNNING:
db25f16d 2583 hotkey_poll_setup_safe(false);
01e88f25 2584 return 0;
b589ea4c
HMH		 2585 case TPACPI_LIFE_EXITING:
2586 return -EBUSY;
01e88f25
HMH		 2587 }
2588
2589 /* Should only happen if tpacpi_lifecycle is corrupt */
2590 BUG();
2591 return -EBUSY;
2592}
2593
2594static void hotkey_inputdev_close(struct input_dev *dev)
2595{
2596 /* disable hotkey polling when possible */
b589ea4c 2597 if (tpacpi_lifecycle != TPACPI_LIFE_EXITING &&
0d922e3b 2598 !(hotkey_source_mask & hotkey_driver_mask))
db25f16d 2599 hotkey_poll_setup_safe(false);
01e88f25 2600}
01e88f25 2601
a0416420
HMH		 2602/* sysfs hotkey enable ------------------------------------------------- */
2603static ssize_t hotkey_enable_show(struct device *dev,
2604 struct device_attribute *attr,
2605 char *buf)
2606{
ae92bd17 2607 int res, status;
a0416420 2608
2586d566
HMH		 2609 printk_deprecated_attribute("hotkey_enable",
2610 "Hotkey reporting is always enabled");
2611
b2c985e7 2612 res = hotkey_status_get(&status);
a0416420
HMH		 2613 if (res)
2614 return res;
2615
33ce79be 2616 return sysfs_emit(buf, "%d\n", status);
a0416420
HMH		 2617}
2618
2619static ssize_t hotkey_enable_store(struct device *dev,
2620 struct device_attribute *attr,
2621 const char *buf, size_t count)
2622{
2623 unsigned long t;
2586d566
HMH		 2624
2625 printk_deprecated_attribute("hotkey_enable",
2626 "Hotkeys can be disabled through hotkey_mask");
a0416420
HMH		 2627
2628 if (parse_strtoul(buf, 1, &t))
2629 return -EINVAL;
2630
2586d566
HMH		 2631 if (t == 0)
2632 return -EPERM;
a0416420 2633
2586d566 2634 return count;
a0416420
HMH		 2635}
2636
b4dd04ac 2637static DEVICE_ATTR_RW(hotkey_enable);
a0416420
HMH		 2638
2639/* sysfs hotkey mask --------------------------------------------------- */
2640static ssize_t hotkey_mask_show(struct device *dev,
2641 struct device_attribute *attr,
2642 char *buf)
2643{
33ce79be 2644 return sysfs_emit(buf, "0x%08x\n", hotkey_user_mask);
a0416420
HMH		 2645}
2646
2647static ssize_t hotkey_mask_store(struct device *dev,
2648 struct device_attribute *attr,
2649 const char *buf, size_t count)
2650{
2651 unsigned long t;
b2c985e7 2652 int res;
a0416420 2653
ae92bd17 2654 if (parse_strtoul(buf, 0xffffffffUL, &t))
a0416420
HMH		 2655 return -EINVAL;
2656
7646ea88 2657 if (mutex_lock_killable(&hotkey_mutex))
b2c985e7
HMH		 2658 return -ERESTARTSYS;
2659
0d922e3b 2660 res = hotkey_user_mask_set(t);
01e88f25
HMH		 2661
2662#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
db25f16d 2663 hotkey_poll_setup(true);
01e88f25
HMH		 2664#endif
2665
b2c985e7 2666 mutex_unlock(&hotkey_mutex);
a0416420 2667
56e2c200
HMH		 2668 tpacpi_disclose_usertask("hotkey_mask", "set to 0x%08lx\n", t);
2669
a0416420
HMH		 2670 return (res) ? res : count;
2671}
2672
b4dd04ac 2673static DEVICE_ATTR_RW(hotkey_mask);
a0416420
HMH		 2674
2675/* sysfs hotkey bios_enabled ------------------------------------------- */
2676static ssize_t hotkey_bios_enabled_show(struct device *dev,
2677 struct device_attribute *attr,
2678 char *buf)
2679{
2586d566 2680 return sprintf(buf, "0\n");
a0416420
HMH		 2681}
2682
b4dd04ac 2683static DEVICE_ATTR_RO(hotkey_bios_enabled);
a0416420
HMH		 2684
2685/* sysfs hotkey bios_mask ---------------------------------------------- */
2686static ssize_t hotkey_bios_mask_show(struct device *dev,
2687 struct device_attribute *attr,
2688 char *buf)
2689{
06777be6
HMH		 2690 printk_deprecated_attribute("hotkey_bios_mask",
2691 "This attribute is useless.");
33ce79be 2692 return sysfs_emit(buf, "0x%08x\n", hotkey_orig_mask);
a0416420
HMH		 2693}
2694
b4dd04ac 2695static DEVICE_ATTR_RO(hotkey_bios_mask);
a0416420 2696
9b010de5
HMH		 2697/* sysfs hotkey all_mask ----------------------------------------------- */
2698static ssize_t hotkey_all_mask_show(struct device *dev,
2699 struct device_attribute *attr,
2700 char *buf)
2701{
33ce79be 2702 return sysfs_emit(buf, "0x%08x\n",
01e88f25 2703 hotkey_all_mask | hotkey_source_mask);
9b010de5
HMH		 2704}
2705
b4dd04ac 2706static DEVICE_ATTR_RO(hotkey_all_mask);
9b010de5 2707
0118c2d3
DW		 2708/* sysfs hotkey all_mask ----------------------------------------------- */
2709static ssize_t hotkey_adaptive_all_mask_show(struct device *dev,
2710 struct device_attribute *attr,
2711 char *buf)
2712{
33ce79be 2713 return sysfs_emit(buf, "0x%08x\n",
0118c2d3
DW		 2714 hotkey_adaptive_all_mask | hotkey_source_mask);
2715}
2716
2717static DEVICE_ATTR_RO(hotkey_adaptive_all_mask);
2718
9b010de5
HMH		 2719/* sysfs hotkey recommended_mask --------------------------------------- */
2720static ssize_t hotkey_recommended_mask_show(struct device *dev,
2721 struct device_attribute *attr,
2722 char *buf)
2723{
33ce79be 2724 return sysfs_emit(buf, "0x%08x\n",
01e88f25
HMH		 2725 (hotkey_all_mask | hotkey_source_mask)
2726 & ~hotkey_reserved_mask);
9b010de5
HMH		 2727}
2728
b4dd04ac 2729static DEVICE_ATTR_RO(hotkey_recommended_mask);
9b010de5 2730
01e88f25
HMH		 2731#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
2732
2733/* sysfs hotkey hotkey_source_mask ------------------------------------- */
2734static ssize_t hotkey_source_mask_show(struct device *dev,
2735 struct device_attribute *attr,
2736 char *buf)
2737{
33ce79be 2738 return sysfs_emit(buf, "0x%08x\n", hotkey_source_mask);
01e88f25
HMH		 2739}
2740
2741static ssize_t hotkey_source_mask_store(struct device *dev,
2742 struct device_attribute *attr,
2743 const char *buf, size_t count)
2744{
2745 unsigned long t;
0d922e3b
HMH		 2746 u32 r_ev;
2747 int rc;
01e88f25
HMH		 2748
2749 if (parse_strtoul(buf, 0xffffffffUL, &t) ||
2750 ((t & ~TPACPI_HKEY_NVRAM_KNOWN_MASK) != 0))
2751 return -EINVAL;
2752
7646ea88 2753 if (mutex_lock_killable(&hotkey_mutex))
01e88f25
HMH		 2754 return -ERESTARTSYS;
2755
2756 HOTKEY_CONFIG_CRITICAL_START
2757 hotkey_source_mask = t;
2758 HOTKEY_CONFIG_CRITICAL_END
2759
0d922e3b
HMH		 2760 rc = hotkey_mask_set((hotkey_user_mask | hotkey_driver_mask) &
2761 ~hotkey_source_mask);
db25f16d 2762 hotkey_poll_setup(true);
0d922e3b
HMH		 2763
2764 /* check if events needed by the driver got disabled */
2765 r_ev = hotkey_driver_mask & ~(hotkey_acpi_mask & hotkey_all_mask)
2766 & ~hotkey_source_mask & TPACPI_HKEY_NVRAM_KNOWN_MASK;
01e88f25
HMH		 2767
2768 mutex_unlock(&hotkey_mutex);
2769
0d922e3b 2770 if (rc < 0)
5cac62ac 2771 pr_err("hotkey_source_mask: failed to update the firmware event mask!\n");
0d922e3b
HMH		 2772
2773 if (r_ev)
5cac62ac 2774 pr_notice("hotkey_source_mask: some important events were disabled: 0x%04x\n",
0978e012 2775 r_ev);
0d922e3b 2776
56e2c200
HMH		 2777 tpacpi_disclose_usertask("hotkey_source_mask", "set to 0x%08lx\n", t);
2778
0d922e3b 2779 return (rc < 0) ? rc : count;
01e88f25
HMH		 2780}
2781
b4dd04ac 2782static DEVICE_ATTR_RW(hotkey_source_mask);
01e88f25
HMH		 2783
2784/* sysfs hotkey hotkey_poll_freq --------------------------------------- */
2785static ssize_t hotkey_poll_freq_show(struct device *dev,
2786 struct device_attribute *attr,
2787 char *buf)
2788{
33ce79be 2789 return sysfs_emit(buf, "%d\n", hotkey_poll_freq);
01e88f25
HMH		 2790}
2791
2792static ssize_t hotkey_poll_freq_store(struct device *dev,
2793 struct device_attribute *attr,
2794 const char *buf, size_t count)
2795{
2796 unsigned long t;
2797
2798 if (parse_strtoul(buf, 25, &t))
2799 return -EINVAL;
2800
7646ea88 2801 if (mutex_lock_killable(&hotkey_mutex))
01e88f25
HMH		 2802 return -ERESTARTSYS;
2803
db25f16d
HMH		 2804 hotkey_poll_set_freq(t);
2805 hotkey_poll_setup(true);
01e88f25 2806
01e88f25
HMH		 2807 mutex_unlock(&hotkey_mutex);
2808
56e2c200
HMH		 2809 tpacpi_disclose_usertask("hotkey_poll_freq", "set to %lu\n", t);
2810
01e88f25
HMH		 2811 return count;
2812}
2813
b4dd04ac 2814static DEVICE_ATTR_RW(hotkey_poll_freq);
01e88f25
HMH		 2815
2816#endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
2817
50ebec09 2818/* sysfs hotkey radio_sw (pollable) ------------------------------------ */
74941a69
HMH		 2819static ssize_t hotkey_radio_sw_show(struct device *dev,
2820 struct device_attribute *attr,
2821 char *buf)
2822{
19d337df
JB		 2823 int res;
2824 res = hotkey_get_wlsw();
74941a69
HMH		 2825 if (res < 0)
2826 return res;
2827
19d337df
JB		 2828 /* Opportunistic update */
2829 tpacpi_rfk_update_hwblock_state((res == TPACPI_RFK_RADIO_OFF));
2830
33ce79be 2831 return sysfs_emit(buf, "%d\n",
19d337df 2832 (res == TPACPI_RFK_RADIO_OFF) ? 0 : 1);
74941a69
HMH		 2833}
2834
b4dd04ac 2835static DEVICE_ATTR_RO(hotkey_radio_sw);
74941a69 2836
50ebec09
HMH		 2837static void hotkey_radio_sw_notify_change(void)
2838{
2839 if (tp_features.hotkey_wlsw)
2840 sysfs_notify(&tpacpi_pdev->dev.kobj, NULL,
2841 "hotkey_radio_sw");
2842}
2843
6c231bd5
HMH		 2844/* sysfs hotkey tablet mode (pollable) --------------------------------- */
2845static ssize_t hotkey_tablet_mode_show(struct device *dev,
2846 struct device_attribute *attr,
2847 char *buf)
2848{
2849 int res, s;
2850 res = hotkey_get_tablet_mode(&s);
2851 if (res < 0)
2852 return res;
2853
33ce79be 2854 return sysfs_emit(buf, "%d\n", !!s);
6c231bd5
HMH		 2855}
2856
b4dd04ac 2857static DEVICE_ATTR_RO(hotkey_tablet_mode);
6c231bd5
HMH		 2858
2859static void hotkey_tablet_mode_notify_change(void)
2860{
2861 if (tp_features.hotkey_tablet)
2862 sysfs_notify(&tpacpi_pdev->dev.kobj, NULL,
2863 "hotkey_tablet_mode");
2864}
2865
50ebec09 2866/* sysfs wakeup reason (pollable) -------------------------------------- */
a713b4d7
HMH		 2867static ssize_t hotkey_wakeup_reason_show(struct device *dev,
2868 struct device_attribute *attr,
2869 char *buf)
2870{
33ce79be 2871 return sysfs_emit(buf, "%d\n", hotkey_wakeup_reason);
a713b4d7
HMH		 2872}
2873
5fb73bc2 2874static DEVICE_ATTR(wakeup_reason, S_IRUGO, hotkey_wakeup_reason_show, NULL);
a713b4d7 2875
1d5a2b54 2876static void hotkey_wakeup_reason_notify_change(void)
50ebec09 2877{
0d922e3b
HMH		 2878 sysfs_notify(&tpacpi_pdev->dev.kobj, NULL,
2879 "wakeup_reason");
50ebec09
HMH		 2880}
2881
2882/* sysfs wakeup hotunplug_complete (pollable) -------------------------- */
a713b4d7
HMH		 2883static ssize_t hotkey_wakeup_hotunplug_complete_show(struct device *dev,
2884 struct device_attribute *attr,
2885 char *buf)
2886{
33ce79be 2887 return sysfs_emit(buf, "%d\n", hotkey_autosleep_ack);
a713b4d7
HMH		 2888}
2889
5fb73bc2
BM		 2890static DEVICE_ATTR(wakeup_hotunplug_complete, S_IRUGO,
2891 hotkey_wakeup_hotunplug_complete_show, NULL);
a713b4d7 2892
1d5a2b54 2893static void hotkey_wakeup_hotunplug_complete_notify_change(void)
50ebec09 2894{
0d922e3b
HMH		 2895 sysfs_notify(&tpacpi_pdev->dev.kobj, NULL,
2896 "wakeup_hotunplug_complete");
50ebec09
HMH		 2897}
2898
b790ceeb
BN		 2899/* sysfs adaptive kbd mode --------------------------------------------- */
2900
2901static int adaptive_keyboard_get_mode(void);
2902static int adaptive_keyboard_set_mode(int new_mode);
2903
2904enum ADAPTIVE_KEY_MODE {
2905 HOME_MODE,
2906 WEB_BROWSER_MODE,
2907 WEB_CONFERENCE_MODE,
2908 FUNCTION_MODE,
2909 LAYFLAT_MODE
2910};
2911
2912static ssize_t adaptive_kbd_mode_show(struct device *dev,
2913 struct device_attribute *attr,
2914 char *buf)
2915{
abf9dc0d 2916 int current_mode;
b790ceeb
BN		 2917
2918 current_mode = adaptive_keyboard_get_mode();
2919 if (current_mode < 0)
2920 return current_mode;
2921
33ce79be 2922 return sysfs_emit(buf, "%d\n", current_mode);
b790ceeb
BN		 2923}
2924
2925static ssize_t adaptive_kbd_mode_store(struct device *dev,
2926 struct device_attribute *attr,
2927 const char *buf, size_t count)
2928{
2929 unsigned long t;
2930 int res;
2931
2932 if (parse_strtoul(buf, LAYFLAT_MODE, &t))
2933 return -EINVAL;
2934
2935 res = adaptive_keyboard_set_mode(t);
2936 return (res < 0) ? res : count;
2937}
2938
2939static DEVICE_ATTR_RW(adaptive_kbd_mode);
2940
2941static struct attribute *adaptive_kbd_attributes[] = {
2942 &dev_attr_adaptive_kbd_mode.attr,
2943 NULL
2944};
2945
79f960e2
LB		 2946static umode_t hadaptive_kbd_attr_is_visible(struct kobject *kobj,
2947 struct attribute *attr, int n)
2948{
2949 return tp_features.has_adaptive_kbd ? attr->mode : 0;
2950}
2951
b790ceeb 2952static const struct attribute_group adaptive_kbd_attr_group = {
79f960e2 2953 .is_visible = hadaptive_kbd_attr_is_visible,
b790ceeb
BN		 2954 .attrs = adaptive_kbd_attributes,
2955};
2956
a0416420
HMH		 2957/* --------------------------------------------------------------------- */
2958
c99ca78d 2959static struct attribute *hotkey_attributes[] = {
ff80f137 2960 &dev_attr_hotkey_enable.attr,
01e88f25 2961 &dev_attr_hotkey_bios_enabled.attr,
0d922e3b 2962 &dev_attr_hotkey_bios_mask.attr,
5fb73bc2
BM		 2963 &dev_attr_wakeup_reason.attr,
2964 &dev_attr_wakeup_hotunplug_complete.attr,
01e88f25
HMH		 2965 &dev_attr_hotkey_mask.attr,
2966 &dev_attr_hotkey_all_mask.attr,
0118c2d3 2967 &dev_attr_hotkey_adaptive_all_mask.attr,
01e88f25 2968 &dev_attr_hotkey_recommended_mask.attr,
b68f8a13
HG		 2969 &dev_attr_hotkey_tablet_mode.attr,
2970 &dev_attr_hotkey_radio_sw.attr,
0d922e3b 2971#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
01e88f25
HMH		 2972 &dev_attr_hotkey_source_mask.attr,
2973 &dev_attr_hotkey_poll_freq.attr,
2974#endif
c99ca78d
LB		 2975 NULL
2976};
2977
2978static umode_t hotkey_attr_is_visible(struct kobject *kobj,
2979 struct attribute *attr, int n)
2980{
2981 if (attr == &dev_attr_hotkey_tablet_mode.attr) {
2982 if (!tp_features.hotkey_tablet)
2983 return 0;
2984 } else if (attr == &dev_attr_hotkey_radio_sw.attr) {
2985 if (!tp_features.hotkey_wlsw)
2986 return 0;
2987 }
2988
2989 return attr->mode;
2990}
2991
2992static const struct attribute_group hotkey_attr_group = {
2993 .is_visible = hotkey_attr_is_visible,
2994 .attrs = hotkey_attributes,
ff80f137
HMH		 2995};
2996
19d337df
JB		 2997/*
2998 * Sync both the hw and sw blocking state of all switches
2999 */
733e27c1
HMH		 3000static void tpacpi_send_radiosw_update(void)
3001{
3002 int wlsw;
3003
19d337df
JB		 3004 /*
3005 * We must sync all rfkill controllers *before* issuing any
3006 * rfkill input events, or we will race the rfkill core input
3007 * handler.
3008 *
c8440336 3009 * tpacpi_inputdev_send_mutex works as a synchronization point
19d337df
JB		 3010 * for the above.
3011 *
3012 * We optimize to avoid numerous calls to hotkey_get_wlsw.
3013 */
3014
3015 wlsw = hotkey_get_wlsw();
3016
3017 /* Sync hw blocking state first if it is hw-blocked */
3018 if (wlsw == TPACPI_RFK_RADIO_OFF)
3019 tpacpi_rfk_update_hwblock_state(true);
0e74dc26 3020
19d337df
JB		 3021 /* Sync hw blocking state last if it is hw-unblocked */
3022 if (wlsw == TPACPI_RFK_RADIO_ON)
3023 tpacpi_rfk_update_hwblock_state(false);
3024
3025 /* Issue rfkill input event for WLSW switch */
3026 if (!(wlsw < 0)) {
733e27c1
HMH		 3027 mutex_lock(&tpacpi_inputdev_send_mutex);
3028
3029 input_report_switch(tpacpi_inputdev,
19d337df 3030 SW_RFKILL_ALL, (wlsw > 0));
733e27c1
HMH		 3031 input_sync(tpacpi_inputdev);
3032
3033 mutex_unlock(&tpacpi_inputdev_send_mutex);
3034 }
19d337df
JB		 3035
3036 /*
3037 * this can be unconditional, as we will poll state again
3038 * if userspace uses the notify to read data
3039 */
733e27c1
HMH		 3040 hotkey_radio_sw_notify_change();
3041}
3042
9c0a76e1
HMH		 3043static void hotkey_exit(void)
3044{
3045#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
db25f16d 3046 mutex_lock(&hotkey_mutex);
9c0a76e1 3047 hotkey_poll_stop_sync();
db25f16d 3048 mutex_unlock(&hotkey_mutex);
9c0a76e1 3049#endif
4be73005 3050 dbg_printk(TPACPI_DBG_EXIT | TPACPI_DBG_HKEY,
0d922e3b
HMH		 3051 "restoring original HKEY status and mask\n");
3052 /* yes, there is a bitwise or below, we want the
3053 * functions to be called even if one of them fail */
3054 if (((tp_features.hotkey_mask &&
3055 hotkey_mask_set(hotkey_orig_mask)) |
3056 hotkey_status_set(false)) != 0)
5cac62ac 3057 pr_err("failed to restore hot key mask to BIOS defaults\n");
9c0a76e1
HMH		 3058}
3059
de4c8cc7
HMH		 3060static void __init hotkey_unmap(const unsigned int scancode)
3061{
3062 if (hotkey_keycode_map[scancode] != KEY_RESERVED) {
3063 clear_bit(hotkey_keycode_map[scancode],
3064 tpacpi_inputdev->keybit);
3065 hotkey_keycode_map[scancode] = KEY_RESERVED;
3066 }
3067}
3068
0d922e3b
HMH		 3069/*
3070 * HKEY quirks:
3071 * TPACPI_HK_Q_INIMASK: Supports FN+F3,FN+F4,FN+F12
3072 */
3073
3074#define TPACPI_HK_Q_INIMASK 0x0001
3075
3076static const struct tpacpi_quirk tpacpi_hotkey_qtable[] __initconst = {
3077 TPACPI_Q_IBM('I', 'H', TPACPI_HK_Q_INIMASK), /* 600E */
3078 TPACPI_Q_IBM('I', 'N', TPACPI_HK_Q_INIMASK), /* 600E */
3079 TPACPI_Q_IBM('I', 'D', TPACPI_HK_Q_INIMASK), /* 770, 770E, 770ED */
3080 TPACPI_Q_IBM('I', 'W', TPACPI_HK_Q_INIMASK), /* A20m */
3081 TPACPI_Q_IBM('I', 'V', TPACPI_HK_Q_INIMASK), /* A20p */
3082 TPACPI_Q_IBM('1', '0', TPACPI_HK_Q_INIMASK), /* A21e, A22e */
3083 TPACPI_Q_IBM('K', 'U', TPACPI_HK_Q_INIMASK), /* A21e */
3084 TPACPI_Q_IBM('K', 'X', TPACPI_HK_Q_INIMASK), /* A21m, A22m */
3085 TPACPI_Q_IBM('K', 'Y', TPACPI_HK_Q_INIMASK), /* A21p, A22p */
3086 TPACPI_Q_IBM('1', 'B', TPACPI_HK_Q_INIMASK), /* A22e */
3087 TPACPI_Q_IBM('1', '3', TPACPI_HK_Q_INIMASK), /* A22m */
3088 TPACPI_Q_IBM('1', 'E', TPACPI_HK_Q_INIMASK), /* A30/p (0) */
3089 TPACPI_Q_IBM('1', 'C', TPACPI_HK_Q_INIMASK), /* R30 */
3090 TPACPI_Q_IBM('1', 'F', TPACPI_HK_Q_INIMASK), /* R31 */
3091 TPACPI_Q_IBM('I', 'Y', TPACPI_HK_Q_INIMASK), /* T20 */
3092 TPACPI_Q_IBM('K', 'Z', TPACPI_HK_Q_INIMASK), /* T21 */
3093 TPACPI_Q_IBM('1', '6', TPACPI_HK_Q_INIMASK), /* T22 */
3094 TPACPI_Q_IBM('I', 'Z', TPACPI_HK_Q_INIMASK), /* X20, X21 */
3095 TPACPI_Q_IBM('1', 'D', TPACPI_HK_Q_INIMASK), /* X22, X23, X24 */
3096};
3097
fc6e7568
HMH		 3098typedef u16 tpacpi_keymap_entry_t;
3099typedef tpacpi_keymap_entry_t tpacpi_keymap_t[TPACPI_HOTKEY_MAP_LEN];
d1e14dca 3100
b3180028
L		 3101static int hotkey_init_tablet_mode(void)
3102{
cb2bf251
DH		 3103 int in_tablet_mode = 0, res;
3104 char *type = NULL;
b3180028 3105
dda3ec0a
BB		 3106 if (acpi_evalf(hkey_handle, &res, "GMMS", "qdd", 0)) {
3107 int has_tablet_mode;
3108
3109 in_tablet_mode = hotkey_gmms_get_tablet_mode(res,
3110 &has_tablet_mode);
685489a3
HG		 3111 /*
3112 * The Yoga 11e series has 2 accelerometers described by a
3113 * BOSC0200 ACPI node. This setup relies on a Windows service
3114 * which calls special ACPI methods on this node to report
3115 * the laptop/tent/tablet mode to the EC. The bmc150 iio driver
3116 * does not support this, so skip the hotkey on these models.
3117 */
153cca9c 3118 if (has_tablet_mode && !dual_accel_detect())
dda3ec0a
BB		 3119 tp_features.hotkey_tablet = TP_HOTKEY_TABLET_USES_GMMS;
3120 type = "GMMS";
3121 } else if (acpi_evalf(hkey_handle, &res, "MHKG", "qd")) {
b03f4d49 3122 /* For X41t, X60t, X61t Tablets... */
b3180028
L		 3123 tp_features.hotkey_tablet = TP_HOTKEY_TABLET_USES_MHKG;
3124 in_tablet_mode = !!(res & TP_HOTKEY_TABLET_MASK);
3125 type = "MHKG";
3126 }
3127
3128 if (!tp_features.hotkey_tablet)
3129 return 0;
3130
3131 pr_info("Tablet mode switch found (type: %s), currently in %s mode\n",
3132 type, in_tablet_mode ? "tablet" : "laptop");
3133
b3180028
L		 3134 return in_tablet_mode;
3135}
3136
a5763f22 3137static int __init hotkey_init(struct ibm_init_struct *iibm)
56b6aeb0 3138{
0f089147
HMH		 3139 /* Requirements for changing the default keymaps:
3140 *
3141 * 1. Many of the keys are mapped to KEY_RESERVED for very
3142 * good reasons. Do not change them unless you have deep
3143 * knowledge on the IBM and Lenovo ThinkPad firmware for
3144 * the various ThinkPad models. The driver behaves
3145 * differently for KEY_RESERVED: such keys have their
3146 * hot key mask *unset* in mask_recommended, and also
3147 * in the initial hot key mask programmed into the
3148 * firmware at driver load time, which means the firm-
3149 * ware may react very differently if you change them to
3150 * something else;
3151 *
3152 * 2. You must be subscribed to the linux-thinkpad and
3153 * ibm-acpi-devel mailing lists, and you should read the
3154 * list archives since 2007 if you want to change the
3155 * keymaps. This requirement exists so that you will
3156 * know the past history of problems with the thinkpad-
3157 * acpi driver keymaps, and also that you will be
3158 * listening to any bug reports;
3159 *
3160 * 3. Do not send thinkpad-acpi specific patches directly to
3161 * for merging, *ever*. Send them to the linux-acpi
3162 * mailinglist for comments. Merging is to be done only
3163 * through acpi-test and the ACPI maintainer.
3164 *
3165 * If the above is too much to ask, don't change the keymap.
3166 * Ask the thinkpad-acpi maintainer to do it, instead.
3167 */
d1e14dca
HMH		 3168
3169 enum keymap_index {
3170 TPACPI_KEYMAP_IBM_GENERIC = 0,
3171 TPACPI_KEYMAP_LENOVO_GENERIC,
3172 };
3173
3174 static const tpacpi_keymap_t tpacpi_keymaps[] __initconst = {
3175 /* Generic keymap for IBM ThinkPads */
3176 [TPACPI_KEYMAP_IBM_GENERIC] = {
edf0e0e5 3177 /* Scan Codes 0x00 to 0x0B: ACPI HKEY FN+F1..F12 */
d1e14dca 3178 KEY_FN_F1, KEY_BATTERY, KEY_COFFEE, KEY_SLEEP,
edf0e0e5
HMH		 3179 KEY_WLAN, KEY_FN_F6, KEY_SWITCHVIDEOMODE, KEY_FN_F8,
3180 KEY_FN_F9, KEY_FN_F10, KEY_FN_F11, KEY_SUSPEND,
0f089147
HMH		 3181
3182 /* Scan codes 0x0C to 0x1F: Other ACPI HKEY hot keys */
edf0e0e5
HMH		 3183 KEY_UNKNOWN, /* 0x0C: FN+BACKSPACE */
3184 KEY_UNKNOWN, /* 0x0D: FN+INSERT */
3185 KEY_UNKNOWN, /* 0x0E: FN+DELETE */
0f089147 3186
0d922e3b 3187 /* brightness: firmware always reacts to them */
e927c08d 3188 KEY_RESERVED, /* 0x0F: FN+HOME (brightness up) */
e927c08d 3189 KEY_RESERVED, /* 0x10: FN+END (brightness down) */
0f089147
HMH		 3190
3191 /* Thinklight: firmware always react to it */
edf0e0e5 3192 KEY_RESERVED, /* 0x11: FN+PGUP (thinklight toggle) */
0f089147 3193
edf0e0e5
HMH		 3194 KEY_UNKNOWN, /* 0x12: FN+PGDOWN */
3195 KEY_ZOOM, /* 0x13: FN+SPACE (zoom) */
0f089147
HMH		 3196
3197 /* Volume: firmware always react to it and reprograms
3198 * the built-in *extra* mixer. Never map it to control
3199 * another mixer by default. */
e927c08d
HMH		 3200 KEY_RESERVED, /* 0x14: VOLUME UP */
3201 KEY_RESERVED, /* 0x15: VOLUME DOWN */
3202 KEY_RESERVED, /* 0x16: MUTE */
0f089147 3203
edf0e0e5 3204 KEY_VENDOR, /* 0x17: Thinkpad/AccessIBM/Lenovo */
0f089147 3205
edf0e0e5
HMH		 3206 /* (assignments unknown, please report if found) */
3207 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN,
3208 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN,
6a68d855
BN		 3209
3210 /* No assignments, only used for Adaptive keyboards. */
3211 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN,
3212 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN,
3213 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN,
3214 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN,
3215 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN,
696c6523
CK		 3216
3217 /* No assignment, used for newer Lenovo models */
3218 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN,
3219 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN,
3220 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN,
3221 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN,
3222 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN,
3223 KEY_UNKNOWN, KEY_UNKNOWN
3224
d1e14dca
HMH		 3225 },
3226
3227 /* Generic keymap for Lenovo ThinkPads */
3228 [TPACPI_KEYMAP_LENOVO_GENERIC] = {
edf0e0e5
HMH		 3229 /* Scan Codes 0x00 to 0x0B: ACPI HKEY FN+F1..F12 */
3230 KEY_FN_F1, KEY_COFFEE, KEY_BATTERY, KEY_SLEEP,
2b754262 3231 KEY_WLAN, KEY_CAMERA, KEY_SWITCHVIDEOMODE, KEY_FN_F8,
edf0e0e5 3232 KEY_FN_F9, KEY_FN_F10, KEY_FN_F11, KEY_SUSPEND,
0f089147
HMH		 3233
3234 /* Scan codes 0x0C to 0x1F: Other ACPI HKEY hot keys */
edf0e0e5
HMH		 3235 KEY_UNKNOWN, /* 0x0C: FN+BACKSPACE */
3236 KEY_UNKNOWN, /* 0x0D: FN+INSERT */
3237 KEY_UNKNOWN, /* 0x0E: FN+DELETE */
0f089147 3238
de4c8cc7
HMH		 3239 /* These should be enabled --only-- when ACPI video
3240 * is disabled (i.e. in "vendor" mode), and are handled
3241 * in a special way by the init code */
3242 KEY_BRIGHTNESSUP, /* 0x0F: FN+HOME (brightness up) */
3243 KEY_BRIGHTNESSDOWN, /* 0x10: FN+END (brightness down) */
0f089147 3244
edf0e0e5 3245 KEY_RESERVED, /* 0x11: FN+PGUP (thinklight toggle) */
0f089147 3246
edf0e0e5
HMH		 3247 KEY_UNKNOWN, /* 0x12: FN+PGDOWN */
3248 KEY_ZOOM, /* 0x13: FN+SPACE (zoom) */
0f089147
HMH		 3249
3250 /* Volume: z60/z61, T60 (BIOS version?): firmware always
3251 * react to it and reprograms the built-in *extra* mixer.
3252 * Never map it to control another mixer by default.
3253 *
3254 * T60?, T61, R60?, R61: firmware and EC tries to send
3255 * these over the regular keyboard, so these are no-ops,
3256 * but there are still weird bugs re. MUTE, so do not
3257 * change unless you get test reports from all Lenovo
3258 * models. May cause the BIOS to interfere with the
3259 * HDA mixer.
3260 */
e927c08d
HMH		 3261 KEY_RESERVED, /* 0x14: VOLUME UP */
3262 KEY_RESERVED, /* 0x15: VOLUME DOWN */
3263 KEY_RESERVED, /* 0x16: MUTE */
0f089147 3264
edf0e0e5 3265 KEY_VENDOR, /* 0x17: Thinkpad/AccessIBM/Lenovo */
0f089147 3266
33009557
AL		 3267 /* (assignments unknown, please report if found) */
3268 KEY_UNKNOWN, KEY_UNKNOWN,
3269
3270 /*
3271 * The mic mute button only sends 0x1a. It does not
3272 * automatically mute the mic or change the mute light.
3273 */
3274 KEY_MICMUTE, /* 0x1a: Mic mute (since ?400 or so) */
3275
edf0e0e5 3276 /* (assignments unknown, please report if found) */
33009557 3277 KEY_UNKNOWN,
8b9dd4fa
HG		 3278
3279 /* Extra keys in use since the X240 / T440 / T540 */
4beb81d1 3280 KEY_CONFIG, KEY_SEARCH, KEY_SCALE, KEY_FILE,
6a68d855
BN		 3281
3282 /*
3283 * These are the adaptive keyboard keycodes for Carbon X1 2014.
3284 * The first item in this list is the Mute button which is
3285 * emitted with 0x103 through
3286 * adaptive_keyboard_hotkey_notify_hotkey() when the sound
3287 * symbol is held.
3288 * We'll need to offset those by 0x20.
3289 */
3290 KEY_RESERVED, /* Mute held, 0x103 */
3291 KEY_BRIGHTNESS_MIN, /* Backlight off */
3292 KEY_RESERVED, /* Clipping tool */
3293 KEY_RESERVED, /* Cloud */
3294 KEY_RESERVED,
3295 KEY_VOICECOMMAND, /* Voice */
3296 KEY_RESERVED,
3297 KEY_RESERVED, /* Gestures */
3298 KEY_RESERVED,
3299 KEY_RESERVED,
3300 KEY_RESERVED,
3301 KEY_CONFIG, /* Settings */
3302 KEY_RESERVED, /* New tab */
3303 KEY_REFRESH, /* Reload */
3304 KEY_BACK, /* Back */
3305 KEY_RESERVED, /* Microphone down */
3306 KEY_RESERVED, /* Microphone up */
3307 KEY_RESERVED, /* Microphone cancellation */
3308 KEY_RESERVED, /* Camera mode */
3309 KEY_RESERVED, /* Rotate display, 0x116 */
696c6523
CK		 3310
3311 /*
3312 * These are found in 2017 models (e.g. T470s, X270).
3313 * The lowest known value is 0x311, which according to
3314 * the manual should launch a user defined favorite
3315 * application.
3316 *
3317 * The offset for these is TP_ACPI_HOTKEYSCAN_EXTENDED_START,
3318 * corresponding to 0x34.
3319 */
3320
3321 /* (assignments unknown, please report if found) */
3322 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN,
3323 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN,
3324 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN,
3325 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN,
3326 KEY_UNKNOWN,
3327
7ed7748d 3328 KEY_BOOKMARKS, /* Favorite app, 0x311 */
e2c8c4ec 3329 KEY_SELECTIVE_SCREENSHOT, /* Clipping tool */
7ed7748d
HG		 3330 KEY_CALC, /* Calculator (above numpad, P52) */
3331 KEY_BLUETOOTH, /* Bluetooth */
3332 KEY_KEYBOARD, /* Keyboard, 0x315 */
3333 KEY_FN_RIGHT_SHIFT, /* Fn + right Shift */
3334 KEY_NOTIFICATION_CENTER, /* Notification Center */
3335 KEY_PICKUP_PHONE, /* Answer incoming call */
3336 KEY_HANGUP_PHONE, /* Decline incoming call */
d1e14dca 3337 },
edf0e0e5
HMH		 3338 };
3339
d1e14dca
HMH		 3340 static const struct tpacpi_quirk tpacpi_keymap_qtable[] __initconst = {
3341 /* Generic maps (fallback) */
3342 {
3343 .vendor = PCI_VENDOR_ID_IBM,
3344 .bios = TPACPI_MATCH_ANY, .ec = TPACPI_MATCH_ANY,
3345 .quirks = TPACPI_KEYMAP_IBM_GENERIC,
3346 },
3347 {
3348 .vendor = PCI_VENDOR_ID_LENOVO,
3349 .bios = TPACPI_MATCH_ANY, .ec = TPACPI_MATCH_ANY,
3350 .quirks = TPACPI_KEYMAP_LENOVO_GENERIC,
3351 },
3352 };
3353
3354#define TPACPI_HOTKEY_MAP_SIZE sizeof(tpacpi_keymap_t)
fc6e7568 3355#define TPACPI_HOTKEY_MAP_TYPESIZE sizeof(tpacpi_keymap_entry_t)
edf0e0e5 3356
6a38abbf 3357 int res, i;
74941a69 3358 int status;
1b6521dc 3359 int hkeyv;
d89a727a
HMH		 3360 bool radiosw_state = false;
3361 bool tabletsw_state = false;
b86c4722 3362
0d922e3b 3363 unsigned long quirks;
d1e14dca 3364 unsigned long keymap_id;
0d922e3b 3365
56e2c200
HMH		 3366 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY,
3367 "initializing hotkey subdriver\n");
fe08bc4b 3368
6a38abbf 3369 BUG_ON(!tpacpi_inputdev);
01e88f25
HMH		 3370 BUG_ON(tpacpi_inputdev->open != NULL ||
3371 tpacpi_inputdev->close != NULL);
6a38abbf 3372
e0c7dfe7 3373 TPACPI_ACPIHANDLE_INIT(hkey);
40ca9fdf 3374 mutex_init(&hotkey_mutex);
5fba344c 3375
01e88f25 3376#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
01e88f25
HMH		 3377 mutex_init(&hotkey_thread_data_mutex);
3378#endif
3379
56b6aeb0 3380 /* hotkey not supported on 570 */
d8fd94d9 3381 tp_features.hotkey = hkey_handle != NULL;
56b6aeb0 3382
56e2c200
HMH		 3383 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY,
3384 "hotkeys are %s\n",
d8fd94d9 3385 str_supported(tp_features.hotkey));
fe08bc4b 3386
9c0a76e1 3387 if (!tp_features.hotkey)
c7e1c782 3388 return -ENODEV;
a0416420 3389
0d922e3b
HMH		 3390 quirks = tpacpi_check_quirks(tpacpi_hotkey_qtable,
3391 ARRAY_SIZE(tpacpi_hotkey_qtable));
3392
d64c81c4
HMH		 3393 tpacpi_disable_brightness_delay();
3394
0d922e3b 3395 /* mask not supported on 600e/x, 770e, 770x, A21e, A2xm/p,
9c0a76e1
HMH		 3396 A30, R30, R31, T20-22, X20-21, X22-24. Detected by checking
3397 for HKEY interface version 0x100 */
3398 if (acpi_evalf(hkey_handle, &hkeyv, "MHKV", "qd")) {
0118c2d3
DW		 3399 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY,
3400 "firmware HKEY interface version: 0x%x\n",
3401 hkeyv);
3402
3403 switch (hkeyv >> 8) {
3404 case 1:
9c0a76e1
HMH		 3405 /*
3406 * MHKV 0x100 in A31, R40, R40e,
3407 * T4x, X31, and later
3408 */
0d922e3b
HMH		 3409
3410 /* Paranoia check AND init hotkey_all_mask */
3411 if (!acpi_evalf(hkey_handle, &hotkey_all_mask,
3412 "MHKA", "qd")) {
0118c2d3
DW		 3413 pr_err("missing MHKA handler, please report this to %s\n",
3414 TPACPI_MAIL);
3415 /* Fallback: pre-init for FN+F3,F4,F12 */
3416 hotkey_all_mask = 0x080cU;
3417 } else {
3418 tp_features.hotkey_mask = 1;
3419 }
3420 break;
3421
3422 case 2:
3423 /*
3424 * MHKV 0x200 in X1, T460s, X260, T560, X1 Tablet (2016)
3425 */
3426
3427 /* Paranoia check AND init hotkey_all_mask */
3428 if (!acpi_evalf(hkey_handle, &hotkey_all_mask,
3429 "MHKA", "dd", 1)) {
3430 pr_err("missing MHKA handler, please report this to %s\n",
0d922e3b
HMH		 3431 TPACPI_MAIL);
3432 /* Fallback: pre-init for FN+F3,F4,F12 */
3433 hotkey_all_mask = 0x080cU;
3434 } else {
3435 tp_features.hotkey_mask = 1;
3436 }
0118c2d3
DW		 3437
3438 /*
3439 * Check if we have an adaptive keyboard, like on the
3440 * Lenovo Carbon X1 2014 (2nd Gen).
3441 */
3442 if (acpi_evalf(hkey_handle, &hotkey_adaptive_all_mask,
3443 "MHKA", "dd", 2)) {
79f960e2 3444 if (hotkey_adaptive_all_mask != 0)
0118c2d3 3445 tp_features.has_adaptive_kbd = true;
0118c2d3
DW		 3446 } else {
3447 tp_features.has_adaptive_kbd = false;
3448 hotkey_adaptive_all_mask = 0x0U;
3449 }
3450 break;
3451
3452 default:
3453 pr_err("unknown version of the HKEY interface: 0x%x\n",
3454 hkeyv);
3455 pr_err("please report this to %s\n", TPACPI_MAIL);
3456 break;
1b6521dc 3457 }
9c0a76e1 3458 }
56b6aeb0 3459
56e2c200
HMH		 3460 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY,
3461 "hotkey masks are %s\n",
9c0a76e1 3462 str_supported(tp_features.hotkey_mask));
fe08bc4b 3463
0d922e3b
HMH		 3464 /* Init hotkey_all_mask if not initialized yet */
3465 if (!tp_features.hotkey_mask && !hotkey_all_mask &&
3466 (quirks & TPACPI_HK_Q_INIMASK))
3467 hotkey_all_mask = 0x080cU; /* FN+F12, FN+F4, FN+F3 */
9b010de5 3468
0d922e3b 3469 /* Init hotkey_acpi_mask and hotkey_orig_mask */
9c0a76e1 3470 if (tp_features.hotkey_mask) {
0d922e3b
HMH		 3471 /* hotkey_source_mask *must* be zero for
3472 * the first hotkey_mask_get to return hotkey_orig_mask */
ce55dbe5 3473 mutex_lock(&hotkey_mutex);
9c0a76e1 3474 res = hotkey_mask_get();
ce55dbe5 3475 mutex_unlock(&hotkey_mutex);
9c0a76e1 3476 if (res)
cb97f5f0 3477 return res;
9c0a76e1 3478
0d922e3b
HMH		 3479 hotkey_orig_mask = hotkey_acpi_mask;
3480 } else {
3481 hotkey_orig_mask = hotkey_all_mask;
3482 hotkey_acpi_mask = hotkey_all_mask;
9c0a76e1 3483 }
74941a69 3484
a73f3091
HMH		 3485#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
3486 if (dbg_wlswemul) {
3487 tp_features.hotkey_wlsw = 1;
d89a727a 3488 radiosw_state = !!tpacpi_wlsw_emulstate;
0978e012 3489 pr_info("radio switch emulation enabled\n");
a73f3091
HMH		 3490 } else
3491#endif
9c0a76e1
HMH		 3492 /* Not all thinkpads have a hardware radio switch */
3493 if (acpi_evalf(hkey_handle, &status, "WLSW", "qd")) {
3494 tp_features.hotkey_wlsw = 1;
d89a727a 3495 radiosw_state = !!status;
664607f5 3496 pr_info("radio switch found; radios are %s\n", str_enabled_disabled(status & BIT(0)));
3a872080 3497 }
74941a69 3498
c99ca78d 3499 tabletsw_state = hotkey_init_tablet_mode();
6a38abbf 3500
9c0a76e1 3501 /* Set up key map */
d1e14dca
HMH		 3502 keymap_id = tpacpi_check_quirks(tpacpi_keymap_qtable,
3503 ARRAY_SIZE(tpacpi_keymap_qtable));
3504 BUG_ON(keymap_id >= ARRAY_SIZE(tpacpi_keymaps));
3505 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY,
3506 "using keymap number %lu\n", keymap_id);
3507
35b7c808
FH		 3508 hotkey_keycode_map = kmemdup(&tpacpi_keymaps[keymap_id],
3509 TPACPI_HOTKEY_MAP_SIZE, GFP_KERNEL);
3510 if (!hotkey_keycode_map) {
3511 pr_err("failed to allocate memory for key map\n");
cb97f5f0 3512 return -ENOMEM;
35b7c808 3513 }
edf0e0e5 3514
792979c8 3515 input_set_capability(tpacpi_inputdev, EV_MSC, MSC_SCAN);
9c0a76e1
HMH		 3516 tpacpi_inputdev->keycodesize = TPACPI_HOTKEY_MAP_TYPESIZE;
3517 tpacpi_inputdev->keycodemax = TPACPI_HOTKEY_MAP_LEN;
3518 tpacpi_inputdev->keycode = hotkey_keycode_map;
3519 for (i = 0; i < TPACPI_HOTKEY_MAP_LEN; i++) {
3520 if (hotkey_keycode_map[i] != KEY_RESERVED) {
792979c8
HMH		 3521 input_set_capability(tpacpi_inputdev, EV_KEY,
3522 hotkey_keycode_map[i]);
9c0a76e1
HMH		 3523 } else {
3524 if (i < sizeof(hotkey_reserved_mask)*8)
3525 hotkey_reserved_mask |= 1 << i;
6a38abbf 3526 }
9c0a76e1 3527 }
6a38abbf 3528
9c0a76e1 3529 if (tp_features.hotkey_wlsw) {
792979c8 3530 input_set_capability(tpacpi_inputdev, EV_SW, SW_RFKILL_ALL);
d89a727a
HMH		 3531 input_report_switch(tpacpi_inputdev,
3532 SW_RFKILL_ALL, radiosw_state);
9c0a76e1
HMH		 3533 }
3534 if (tp_features.hotkey_tablet) {
792979c8 3535 input_set_capability(tpacpi_inputdev, EV_SW, SW_TABLET_MODE);
d89a727a
HMH		 3536 input_report_switch(tpacpi_inputdev,
3537 SW_TABLET_MODE, tabletsw_state);
9c0a76e1 3538 }
5c29d58f 3539
9c0a76e1 3540 /* Do not issue duplicate brightness change events to
77775838
HMH		 3541 * userspace. tpacpi_detect_brightness_capabilities() must have
3542 * been called before this point */
b33c6ce5 3543 if (acpi_video_get_backlight_type() != acpi_backlight_vendor) {
5cac62ac
AS		 3544 pr_info("This ThinkPad has standard ACPI backlight brightness control, supported by the ACPI video driver\n");
3545 pr_notice("Disabling thinkpad-acpi brightness events by default...\n");
9c0a76e1 3546
de4c8cc7
HMH		 3547 /* Disable brightness up/down on Lenovo thinkpads when
3548 * ACPI is handling them, otherwise it is plain impossible
3549 * for userspace to do something even remotely sane */
9c0a76e1
HMH		 3550 hotkey_reserved_mask |=
3551 (1 << TP_ACPI_HOTKEYSCAN_FNHOME)
3552 | (1 << TP_ACPI_HOTKEYSCAN_FNEND);
de4c8cc7
HMH		 3553 hotkey_unmap(TP_ACPI_HOTKEYSCAN_FNHOME);
3554 hotkey_unmap(TP_ACPI_HOTKEYSCAN_FNEND);
9c0a76e1 3555 }
ff80f137 3556
230d8cf2 3557#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
0d922e3b
HMH		 3558 hotkey_source_mask = TPACPI_HKEY_NVRAM_GOOD_MASK
3559 & ~hotkey_all_mask
3560 & ~hotkey_reserved_mask;
230d8cf2
HMH		 3561
3562 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY,
3563 "hotkey source mask 0x%08x, polling freq %u\n",
3564 hotkey_source_mask, hotkey_poll_freq);
3565#endif
3566
56e2c200
HMH		 3567 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY,
3568 "enabling firmware HKEY event interface...\n");
2586d566 3569 res = hotkey_status_set(true);
9c0a76e1
HMH		 3570 if (res) {
3571 hotkey_exit();
3572 return res;
3573 }
ce55dbe5 3574 mutex_lock(&hotkey_mutex);
0d922e3b
HMH		 3575 res = hotkey_mask_set(((hotkey_all_mask & ~hotkey_reserved_mask)
3576 | hotkey_driver_mask)
3577 & ~hotkey_source_mask);
ce55dbe5 3578 mutex_unlock(&hotkey_mutex);
9c0a76e1
HMH		 3579 if (res < 0 && res != -ENXIO) {
3580 hotkey_exit();
3581 return res;
3582 }
0d922e3b
HMH		 3583 hotkey_user_mask = (hotkey_acpi_mask | hotkey_source_mask)
3584 & ~hotkey_reserved_mask;
3585 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY,
3586 "initial masks: user=0x%08x, fw=0x%08x, poll=0x%08x\n",
3587 hotkey_user_mask, hotkey_acpi_mask, hotkey_source_mask);
01e88f25 3588
9c0a76e1
HMH		 3589 tpacpi_inputdev->open = &hotkey_inputdev_open;
3590 tpacpi_inputdev->close = &hotkey_inputdev_close;
56b6aeb0 3591
db25f16d 3592 hotkey_poll_setup_safe(true);
56b6aeb0 3593
9c0a76e1 3594 return 0;
56b6aeb0
HMH		 3595}
3596
3a9d20bd
SS		 3597/* Thinkpad X1 Carbon support 5 modes including Home mode, Web browser
3598 * mode, Web conference mode, Function mode and Lay-flat mode.
3599 * We support Home mode and Function mode currently.
3600 *
3601 * Will consider support rest of modes in future.
3602 *
3603 */
b201a47f 3604static const int adaptive_keyboard_modes[] = {
3a9d20bd
SS		 3605 HOME_MODE,
3606/* WEB_BROWSER_MODE = 2,
3607 WEB_CONFERENCE_MODE = 3, */
3608 FUNCTION_MODE
3609};
3610
3611#define DFR_CHANGE_ROW 0x101
3612#define DFR_SHOW_QUICKVIEW_ROW 0x102
6a68d855 3613#define FIRST_ADAPTIVE_KEY 0x103
3a9d20bd
SS		 3614
3615/* press Fn key a while second, it will switch to Function Mode. Then
3616 * release Fn key, previous mode be restored.
3617 */
3618static bool adaptive_keyboard_mode_is_saved;
3619static int adaptive_keyboard_prev_mode;
3620
f74587fb
BN		 3621static int adaptive_keyboard_get_mode(void)
3622{
3623 int mode = 0;
3624
3625 if (!acpi_evalf(hkey_handle, &mode, "GTRW", "dd", 0)) {
3626 pr_err("Cannot read adaptive keyboard mode\n");
3627 return -EIO;
3628 }
3629
3630 return mode;
3631}
3632
3633static int adaptive_keyboard_set_mode(int new_mode)
3634{
3635 if (new_mode < 0 ||
3636 new_mode > LAYFLAT_MODE)
3637 return -EINVAL;
3638
3639 if (!acpi_evalf(hkey_handle, NULL, "STRW", "vd", new_mode)) {
3640 pr_err("Cannot set adaptive keyboard mode\n");
3641 return -EIO;
3642 }
3643
3644 return 0;
3645}
3646
3a9d20bd
SS		 3647static int adaptive_keyboard_get_next_mode(int mode)
3648{
3649 size_t i;
3650 size_t max_mode = ARRAY_SIZE(adaptive_keyboard_modes) - 1;
3651
3652 for (i = 0; i <= max_mode; i++) {
3653 if (adaptive_keyboard_modes[i] == mode)
3654 break;
3655 }
3656
3657 if (i >= max_mode)
3658 i = 0;
3659 else
3660 i++;
3661
3662 return adaptive_keyboard_modes[i];
3663}
3664
3665static bool adaptive_keyboard_hotkey_notify_hotkey(unsigned int scancode)
3666{
abf9dc0d 3667 int current_mode = 0;
3a9d20bd 3668 int new_mode = 0;
6a68d855 3669 int keycode;
3a9d20bd
SS		 3670
3671 switch (scancode) {
3672 case DFR_CHANGE_ROW:
3673 if (adaptive_keyboard_mode_is_saved) {
3674 new_mode = adaptive_keyboard_prev_mode;
3675 adaptive_keyboard_mode_is_saved = false;
3676 } else {
f74587fb
BN		 3677 current_mode = adaptive_keyboard_get_mode();
3678 if (current_mode < 0)
3a9d20bd 3679 return false;
f74587fb
BN		 3680 new_mode = adaptive_keyboard_get_next_mode(
3681 current_mode);
3a9d20bd
SS		 3682 }
3683
f74587fb 3684 if (adaptive_keyboard_set_mode(new_mode) < 0)
3a9d20bd 3685 return false;
3a9d20bd
SS		 3686
3687 return true;
3688
3689 case DFR_SHOW_QUICKVIEW_ROW:
f74587fb
BN		 3690 current_mode = adaptive_keyboard_get_mode();
3691 if (current_mode < 0)
3a9d20bd 3692 return false;
3a9d20bd 3693
f74587fb
BN		 3694 adaptive_keyboard_prev_mode = current_mode;
3695 adaptive_keyboard_mode_is_saved = true;
3696
3697 if (adaptive_keyboard_set_mode (FUNCTION_MODE) < 0)
3698 return false;
3a9d20bd
SS		 3699 return true;
3700
3701 default:
741d98c7 3702 if (scancode < FIRST_ADAPTIVE_KEY ||
696c6523
CK		 3703 scancode >= FIRST_ADAPTIVE_KEY +
3704 TP_ACPI_HOTKEYSCAN_EXTENDED_START -
3705 TP_ACPI_HOTKEYSCAN_ADAPTIVE_START) {
6a68d855 3706 pr_info("Unhandled adaptive keyboard key: 0x%x\n",
5cac62ac 3707 scancode);
6a68d855
BN		 3708 return false;
3709 }
149c8c75
CK		 3710 keycode = hotkey_keycode_map[scancode - FIRST_ADAPTIVE_KEY +
3711 TP_ACPI_HOTKEYSCAN_ADAPTIVE_START];
6a68d855
BN		 3712 if (keycode != KEY_RESERVED) {
3713 mutex_lock(&tpacpi_inputdev_send_mutex);
3714
3715 input_report_key(tpacpi_inputdev, keycode, 1);
3716 input_sync(tpacpi_inputdev);
3717
3718 input_report_key(tpacpi_inputdev, keycode, 0);
3719 input_sync(tpacpi_inputdev);
3720
3721 mutex_unlock(&tpacpi_inputdev_send_mutex);
3722 }
3723 return true;
3a9d20bd
SS		 3724 }
3725}
3726
1b8101d5
HG		 3727static bool hotkey_notify_extended_hotkey(const u32 hkey)
3728{
3729 unsigned int scancode;
3730
f809891e
HG		 3731 switch (hkey) {
3732 case TP_HKEY_EV_PRIVACYGUARD_TOGGLE:
867eb713 3733 case TP_HKEY_EV_AMT_TOGGLE:
f809891e
HG		 3734 tpacpi_driver_event(hkey);
3735 return true;
3736 }
3737
1b8101d5
HG		 3738 /* Extended keycodes start at 0x300 and our offset into the map
3739 * TP_ACPI_HOTKEYSCAN_EXTENDED_START. The calculated scancode
3740 * will be positive, but might not be in the correct range.
3741 */
3742 scancode = (hkey & 0xfff) - (0x300 - TP_ACPI_HOTKEYSCAN_EXTENDED_START);
3743 if (scancode >= TP_ACPI_HOTKEYSCAN_EXTENDED_START &&
3744 scancode < TPACPI_HOTKEY_MAP_LEN) {
3745 tpacpi_input_send_key(scancode);
3746 return true;
3747 }
3748
3749 return false;
3750}
3751
3827e7a3
HMH		 3752static bool hotkey_notify_hotkey(const u32 hkey,
3753 bool *send_acpi_ev,
3754 bool *ignore_acpi_ev)
3755{
3756 /* 0x1000-0x1FFF: key presses */
3757 unsigned int scancode = hkey & 0xfff;
3758 *send_acpi_ev = true;
3759 *ignore_acpi_ev = false;
3760
696c6523
CK		 3761 /*
3762 * Original events are in the 0x10XX range, the adaptive keyboard
3763 * found in 2014 X1 Carbon emits events are of 0x11XX. In 2017
3764 * models, additional keys are emitted through 0x13XX.
3765 */
3766 switch ((hkey >> 8) & 0xf) {
3767 case 0:
3768 if (scancode > 0 &&
3769 scancode <= TP_ACPI_HOTKEYSCAN_ADAPTIVE_START) {
3770 /* HKEY event 0x1001 is scancode 0x00 */
3771 scancode--;
3772 if (!(hotkey_source_mask & (1 << scancode))) {
3773 tpacpi_input_send_key_masked(scancode);
3774 *send_acpi_ev = false;
3775 } else {
3776 *ignore_acpi_ev = true;
3777 }
3778 return true;
3827e7a3 3779 }
696c6523
CK		 3780 break;
3781
3782 case 1:
3a9d20bd 3783 return adaptive_keyboard_hotkey_notify_hotkey(scancode);
696c6523
CK		 3784
3785 case 3:
1b8101d5 3786 return hotkey_notify_extended_hotkey(hkey);
3827e7a3 3787 }
696c6523 3788
3827e7a3
HMH		 3789 return false;
3790}
3791
3792static bool hotkey_notify_wakeup(const u32 hkey,
3793 bool *send_acpi_ev,
3794 bool *ignore_acpi_ev)
3795{
3796 /* 0x2000-0x2FFF: Wakeup reason */
3797 *send_acpi_ev = true;
3798 *ignore_acpi_ev = false;
3799
3800 switch (hkey) {
67bcae6e
HMH		 3801 case TP_HKEY_EV_WKUP_S3_UNDOCK: /* suspend, undock */
3802 case TP_HKEY_EV_WKUP_S4_UNDOCK: /* hibernation, undock */
3827e7a3
HMH		 3803 hotkey_wakeup_reason = TP_ACPI_WAKEUP_UNDOCK;
3804 *ignore_acpi_ev = true;
3805 break;
3806
67bcae6e
HMH		 3807 case TP_HKEY_EV_WKUP_S3_BAYEJ: /* suspend, bay eject */
3808 case TP_HKEY_EV_WKUP_S4_BAYEJ: /* hibernation, bay eject */
3827e7a3
HMH		 3809 hotkey_wakeup_reason = TP_ACPI_WAKEUP_BAYEJ;
3810 *ignore_acpi_ev = true;
3811 break;
3812
67bcae6e
HMH		 3813 case TP_HKEY_EV_WKUP_S3_BATLOW: /* Battery on critical low level/S3 */
3814 case TP_HKEY_EV_WKUP_S4_BATLOW: /* Battery on critical low level/S4 */
0978e012 3815 pr_alert("EMERGENCY WAKEUP: battery almost empty\n");
106b4e66
HMH		 3816 /* how to auto-heal: */
3817 /* 2313: woke up from S3, go to S4/S5 */
3818 /* 2413: woke up from S4, go to S5 */
3819 break;
3820
3827e7a3
HMH		 3821 default:
3822 return false;
3823 }
3824
3825 if (hotkey_wakeup_reason != TP_ACPI_WAKEUP_NONE) {
0978e012 3826 pr_info("woke up due to a hot-unplug request...\n");
3827e7a3
HMH		 3827 hotkey_wakeup_reason_notify_change();
3828 }
3829 return true;
3830}
3831
a50245af
HMH		 3832static bool hotkey_notify_dockevent(const u32 hkey,
3833 bool *send_acpi_ev,
3834 bool *ignore_acpi_ev)
3835{
3836 /* 0x4000-0x4FFF: dock-related events */
3837 *send_acpi_ev = true;
3838 *ignore_acpi_ev = false;
3839
3840 switch (hkey) {
3841 case TP_HKEY_EV_UNDOCK_ACK:
3842 /* ACPI undock operation completed after wakeup */
3843 hotkey_autosleep_ack = 1;
3844 pr_info("undocked\n");
3845 hotkey_wakeup_hotunplug_complete_notify_change();
3846 return true;
3847
3848 case TP_HKEY_EV_HOTPLUG_DOCK: /* docked to port replicator */
3849 pr_info("docked into hotplug port replicator\n");
3850 return true;
3851 case TP_HKEY_EV_HOTPLUG_UNDOCK: /* undocked from port replicator */
3852 pr_info("undocked from hotplug port replicator\n");
3853 return true;
3854
0a053f01
AK		 3855 /*
3856 * Deliberately ignore attaching and detaching the keybord cover to avoid
3857 * duplicates from intel-vbtn, which already emits SW_TABLET_MODE events
3858 * to userspace.
3859 *
3860 * Please refer to the following thread for more information and a preliminary
3861 * implementation using the GTOP ("Get Tablet OPtions") interface that could be
3862 * extended to other attachment options of the ThinkPad X1 Tablet series, such as
3863 * the Pico cartridge dock module:
3864 * https://lore.kernel.org/platform-driver-x86/38cb8265-1e30-d547-9e12-b4ae290be737@a-kobel.de/
3865 */
3866 case TP_HKEY_EV_KBD_COVER_ATTACH:
3867 case TP_HKEY_EV_KBD_COVER_DETACH:
3868 *send_acpi_ev = false;
3869 *ignore_acpi_ev = true;
3870 return true;
3871
a50245af
HMH		 3872 default:
3873 return false;
3874 }
3875}
3876
3827e7a3
HMH		 3877static bool hotkey_notify_usrevent(const u32 hkey,
3878 bool *send_acpi_ev,
3879 bool *ignore_acpi_ev)
3880{
3881 /* 0x5000-0x5FFF: human interface helpers */
3882 *send_acpi_ev = true;
3883 *ignore_acpi_ev = false;
3884
3885 switch (hkey) {
67bcae6e
HMH		 3886 case TP_HKEY_EV_PEN_INSERTED: /* X61t: tablet pen inserted into bay */
3887 case TP_HKEY_EV_PEN_REMOVED: /* X61t: tablet pen removed from bay */
3827e7a3
HMH		 3888 return true;
3889
67bcae6e
HMH		 3890 case TP_HKEY_EV_TABLET_TABLET: /* X41t-X61t: tablet mode */
3891 case TP_HKEY_EV_TABLET_NOTEBOOK: /* X41t-X61t: normal mode */
3827e7a3
HMH		 3892 tpacpi_input_send_tabletsw();
3893 hotkey_tablet_mode_notify_change();
3894 *send_acpi_ev = false;
3895 return true;
3896
67bcae6e
HMH		 3897 case TP_HKEY_EV_LID_CLOSE: /* Lid closed */
3898 case TP_HKEY_EV_LID_OPEN: /* Lid opened */
3899 case TP_HKEY_EV_BRGHT_CHANGED: /* brightness changed */
176dd985 3900 /* do not propagate these events */
3827e7a3
HMH		 3901 *ignore_acpi_ev = true;
3902 return true;
3903
3904 default:
3905 return false;
3906 }
3907}
3908
9ebd9e83 3909static void thermal_dump_all_sensors(void);
1ac09656 3910static void palmsensor_refresh(void);
9ebd9e83 3911
2d43f671 3912static bool hotkey_notify_6xxx(const u32 hkey,
106b4e66
HMH		 3913 bool *send_acpi_ev,
3914 bool *ignore_acpi_ev)
3915{
2d43f671 3916 /* 0x6000-0x6FFF: thermal alarms/notices and keyboard events */
106b4e66
HMH		 3917 *send_acpi_ev = true;
3918 *ignore_acpi_ev = false;
3919
3920 switch (hkey) {
9ebd9e83 3921 case TP_HKEY_EV_THM_TABLE_CHANGED:
6e6bc5f6
HMH		 3922 pr_debug("EC reports: Thermal Table has changed\n");
3923 /* recommended action: do nothing, we don't have
3924 * Lenovo ATM information */
3925 return true;
3926 case TP_HKEY_EV_THM_CSM_COMPLETED:
3927 pr_debug("EC reports: Thermal Control Command set completed (DYTC)\n");
acf7f4a5
MP		 3928 /* Thermal event - pass on to event handler */
3929 tpacpi_driver_event(hkey);
6e6bc5f6
HMH		 3930 return true;
3931 case TP_HKEY_EV_THM_TRANSFM_CHANGED:
3932 pr_debug("EC reports: Thermal Transformation changed (GMTS)\n");
9ebd9e83
HMH		 3933 /* recommended action: do nothing, we don't have
3934 * Lenovo ATM information */
3935 return true;
67bcae6e 3936 case TP_HKEY_EV_ALARM_BAT_HOT:
0978e012 3937 pr_crit("THERMAL ALARM: battery is too hot!\n");
106b4e66 3938 /* recommended action: warn user through gui */
9ebd9e83 3939 break;
67bcae6e 3940 case TP_HKEY_EV_ALARM_BAT_XHOT:
0978e012 3941 pr_alert("THERMAL EMERGENCY: battery is extremely hot!\n");
106b4e66 3942 /* recommended action: immediate sleep/hibernate */
9ebd9e83 3943 break;
67bcae6e 3944 case TP_HKEY_EV_ALARM_SENSOR_HOT:
5cac62ac 3945 pr_crit("THERMAL ALARM: a sensor reports something is too hot!\n");
106b4e66
HMH		 3946 /* recommended action: warn user through gui, that */
3947 /* some internal component is too hot */
9ebd9e83 3948 break;
67bcae6e 3949 case TP_HKEY_EV_ALARM_SENSOR_XHOT:
5cac62ac 3950 pr_alert("THERMAL EMERGENCY: a sensor reports something is extremely hot!\n");
106b4e66 3951 /* recommended action: immediate sleep/hibernate */
9ebd9e83 3952 break;
6f62bc3e
RH		 3953 case TP_HKEY_EV_AC_CHANGED:
3954 /* X120e, X121e, X220, X220i, X220t, X230, T420, T420s, W520:
3955 * AC status changed; can be triggered by plugging or
3956 * unplugging AC adapter, docking or undocking. */
3957
df561f66 3958 fallthrough;
2d43f671
HMH		 3959
3960 case TP_HKEY_EV_KEY_NUMLOCK:
3961 case TP_HKEY_EV_KEY_FN:
3962 /* key press events, we just ignore them as long as the EC
3963 * is still reporting them in the normal keyboard stream */
3964 *send_acpi_ev = false;
3965 *ignore_acpi_ev = true;
3966 return true;
3967
12dde4d1 3968 case TP_HKEY_EV_KEY_FN_ESC:
49702bac 3969 /* Get the media key status to force the status LED to update */
12dde4d1
EVC		 3970 acpi_evalf(hkey_handle, NULL, "GMKS", "v");
3971 *send_acpi_ev = false;
3972 *ignore_acpi_ev = true;
3973 return true;
3974
b03f4d49
L		 3975 case TP_HKEY_EV_TABLET_CHANGED:
3976 tpacpi_input_send_tabletsw();
3977 hotkey_tablet_mode_notify_change();
3978 *send_acpi_ev = false;
edd1ed73 3979 return true;
b03f4d49 3980
587d8628
DH		 3981 case TP_HKEY_EV_PALM_DETECTED:
3982 case TP_HKEY_EV_PALM_UNDETECTED:
1ac09656
MP		 3983 /* palm detected - pass on to event handler */
3984 palmsensor_refresh();
587d8628
DH		 3985 return true;
3986
106b4e66 3987 default:
fd75ba2b
HMH		 3988 /* report simply as unknown, no sensor dump */
3989 return false;
106b4e66 3990 }
9ebd9e83
HMH		 3991
3992 thermal_dump_all_sensors();
fd75ba2b 3993 return true;
106b4e66
HMH		 3994}
3995
56b6aeb0
HMH		 3996static void hotkey_notify(struct ibm_struct *ibm, u32 event)
3997{
6a38abbf 3998 u32 hkey;
3827e7a3
HMH		 3999 bool send_acpi_ev;
4000 bool ignore_acpi_ev;
4001 bool known_ev;
3eea123d
HMH		 4002
4003 if (event != 0x80) {
0978e012 4004 pr_err("unknown HKEY notification event %d\n", event);
3eea123d 4005 /* forward it to userspace, maybe it knows how to handle it */
35ff8b9f
HMH		 4006 acpi_bus_generate_netlink_event(
4007 ibm->acpi->device->pnp.device_class,
e0b36fc5 4008 dev_name(&ibm->acpi->device->dev),
35ff8b9f 4009 event, 0);
3eea123d
HMH		 4010 return;
4011 }
4012
4013 while (1) {
4014 if (!acpi_evalf(hkey_handle, &hkey, "MHKP", "d")) {
0978e012 4015 pr_err("failed to retrieve HKEY event\n");
3eea123d
HMH		 4016 return;
4017 }
4018
4019 if (hkey == 0) {
4020 /* queue empty */
4021 return;
4022 }
4023
3827e7a3
HMH		 4024 send_acpi_ev = true;
4025 ignore_acpi_ev = false;
56b6aeb0 4026
ff80f137
HMH		 4027 switch (hkey >> 12) {
4028 case 1:
4029 /* 0x1000-0x1FFF: key presses */
3827e7a3
HMH		 4030 known_ev = hotkey_notify_hotkey(hkey, &send_acpi_ev,
4031 &ignore_acpi_ev);
ff80f137 4032 break;
a713b4d7 4033 case 2:
3827e7a3
HMH		 4034 /* 0x2000-0x2FFF: Wakeup reason */
4035 known_ev = hotkey_notify_wakeup(hkey, &send_acpi_ev,
4036 &ignore_acpi_ev);
a713b4d7
HMH		 4037 break;
4038 case 3:
3827e7a3 4039 /* 0x3000-0x3FFF: bay-related wakeups */
bf8b29c8
HMH		 4040 switch (hkey) {
4041 case TP_HKEY_EV_BAYEJ_ACK:
a713b4d7 4042 hotkey_autosleep_ack = 1;
0978e012 4043 pr_info("bay ejected\n");
50ebec09 4044 hotkey_wakeup_hotunplug_complete_notify_change();
3827e7a3 4045 known_ev = true;
bf8b29c8
HMH		 4046 break;
4047 case TP_HKEY_EV_OPTDRV_EJ:
4048 /* FIXME: kick libata if SATA link offline */
4049 known_ev = true;
4050 break;
4051 default:
3827e7a3 4052 known_ev = false;
a713b4d7
HMH		 4053 }
4054 break;
4055 case 4:
a50245af
HMH		 4056 /* 0x4000-0x4FFF: dock-related events */
4057 known_ev = hotkey_notify_dockevent(hkey, &send_acpi_ev,
4058 &ignore_acpi_ev);
a713b4d7 4059 break;
ff80f137 4060 case 5:
d1edb2b5 4061 /* 0x5000-0x5FFF: human interface helpers */
3827e7a3
HMH		 4062 known_ev = hotkey_notify_usrevent(hkey, &send_acpi_ev,
4063 &ignore_acpi_ev);
ff80f137 4064 break;
106b4e66 4065 case 6:
2d43f671
HMH		 4066 /* 0x6000-0x6FFF: thermal alarms/notices and
4067 * keyboard events */
4068 known_ev = hotkey_notify_6xxx(hkey, &send_acpi_ev,
106b4e66
HMH		 4069 &ignore_acpi_ev);
4070 break;
ff80f137
HMH		 4071 case 7:
4072 /* 0x7000-0x7FFF: misc */
67bcae6e
HMH		 4073 if (tp_features.hotkey_wlsw &&
4074 hkey == TP_HKEY_EV_RFKILL_CHANGED) {
733e27c1 4075 tpacpi_send_radiosw_update();
3b64b51d 4076 send_acpi_ev = 0;
3827e7a3 4077 known_ev = true;
6a38abbf 4078 break;
6a38abbf 4079 }
df561f66 4080 fallthrough; /* to default */
ff80f137 4081 default:
3827e7a3 4082 known_ev = false;
3b64b51d 4083 }
3827e7a3 4084 if (!known_ev) {
0978e012 4085 pr_notice("unhandled HKEY event 0x%04x\n", hkey);
5cac62ac
AS		 4086 pr_notice("please report the conditions when this event happened to %s\n",
4087 TPACPI_MAIL);
6a38abbf 4088 }
ff80f137 4089
3eea123d 4090 /* netlink events */
3e5ce914 4091 if (!ignore_acpi_ev && send_acpi_ev) {
35ff8b9f
HMH		 4092 acpi_bus_generate_netlink_event(
4093 ibm->acpi->device->pnp.device_class,
e0b36fc5 4094 dev_name(&ibm->acpi->device->dev),
35ff8b9f 4095 event, hkey);
3eea123d 4096 }
56b6aeb0
HMH		 4097 }
4098}
4099
fd3c3a42 4100static void hotkey_suspend(void)
a713b4d7
HMH		 4101{
4102 /* Do these on suspend, we get the events on early resume! */
4103 hotkey_wakeup_reason = TP_ACPI_WAKEUP_NONE;
4104 hotkey_autosleep_ack = 0;
330947b8
SS		 4105
4106 /* save previous mode of adaptive keyboard of X1 Carbon */
f23a5bcb
BN		 4107 if (tp_features.has_adaptive_kbd) {
4108 if (!acpi_evalf(hkey_handle, &adaptive_keyboard_prev_mode,
4109 "GTRW", "dd", 0)) {
4110 pr_err("Cannot read adaptive keyboard mode.\n");
330947b8
SS		 4111 }
4112 }
a713b4d7
HMH		 4113}
4114
5c29d58f
HMH		 4115static void hotkey_resume(void)
4116{
d64c81c4
HMH		 4117 tpacpi_disable_brightness_delay();
4118
81bf4a4e 4119 mutex_lock(&hotkey_mutex);
0d922e3b
HMH		 4120 if (hotkey_status_set(true) < 0 ||
4121 hotkey_mask_set(hotkey_acpi_mask) < 0)
5cac62ac 4122 pr_err("error while attempting to reset the event firmware interface\n");
81bf4a4e 4123 mutex_unlock(&hotkey_mutex);
0d922e3b 4124
733e27c1 4125 tpacpi_send_radiosw_update();
96adb419 4126 tpacpi_input_send_tabletsw();
6c231bd5 4127 hotkey_tablet_mode_notify_change();
50ebec09
HMH		 4128 hotkey_wakeup_reason_notify_change();
4129 hotkey_wakeup_hotunplug_complete_notify_change();
db25f16d 4130 hotkey_poll_setup_safe(false);
330947b8
SS		 4131
4132 /* restore previous mode of adapive keyboard of X1 Carbon */
f23a5bcb
BN		 4133 if (tp_features.has_adaptive_kbd) {
4134 if (!acpi_evalf(hkey_handle, NULL, "STRW", "vd",
4135 adaptive_keyboard_prev_mode)) {
4136 pr_err("Cannot set adaptive keyboard mode.\n");
330947b8
SS		 4137 }
4138 }
5c29d58f
HMH		 4139}
4140
a0416420 4141/* procfs -------------------------------------------------------------- */
887965e6 4142static int hotkey_read(struct seq_file *m)
1da177e4 4143{
ae92bd17 4144 int res, status;
1da177e4 4145
d8fd94d9 4146 if (!tp_features.hotkey) {
887965e6
AD		 4147 seq_printf(m, "status:\t\tnot supported\n");
4148 return 0;
78f81cc4
BD		 4149 }
4150
7646ea88 4151 if (mutex_lock_killable(&hotkey_mutex))
fc589a3c 4152 return -ERESTARTSYS;
b2c985e7
HMH		 4153 res = hotkey_status_get(&status);
4154 if (!res)
4155 res = hotkey_mask_get();
40ca9fdf 4156 mutex_unlock(&hotkey_mutex);
b86c4722
HMH		 4157 if (res)
4158 return res;
1da177e4 4159
664607f5 4160 seq_printf(m, "status:\t\t%s\n", str_enabled_disabled(status & BIT(0)));
0d922e3b 4161 if (hotkey_all_mask) {
887965e6
AD		 4162 seq_printf(m, "mask:\t\t0x%08x\n", hotkey_user_mask);
4163 seq_printf(m, "commands:\tenable, disable, reset, <mask>\n");
1da177e4 4164 } else {
887965e6
AD		 4165 seq_printf(m, "mask:\t\tnot supported\n");
4166 seq_printf(m, "commands:\tenable, disable, reset\n");
1da177e4
LT		 4167 }
4168
887965e6 4169 return 0;
1da177e4
LT		 4170}
4171
406e988b 4172static void hotkey_enabledisable_warn(bool enable)
2586d566
HMH		 4173{
4174 tpacpi_log_usertask("procfs hotkey enable/disable");
406e988b 4175 if (!WARN((tpacpi_lifecycle == TPACPI_LIFE_RUNNING || !enable),
5cac62ac
AS		 4176 pr_fmt("hotkey enable/disable functionality has been removed from the driver. Hotkeys are always enabled.\n")))
4177 pr_err("Please remove the hotkey=enable module parameter, it is deprecated. Hotkeys are always enabled.\n");
2586d566
HMH		 4178}
4179
78f81cc4 4180static int hotkey_write(char *buf)
1da177e4 4181{
2586d566 4182 int res;
ae92bd17 4183 u32 mask;
1da177e4 4184 char *cmd;
1da177e4 4185
d8fd94d9 4186 if (!tp_features.hotkey)
1da177e4
LT		 4187 return -ENODEV;
4188
7646ea88 4189 if (mutex_lock_killable(&hotkey_mutex))
fc589a3c 4190 return -ERESTARTSYS;
40ca9fdf 4191
0d922e3b 4192 mask = hotkey_user_mask;
78f81cc4 4193
40ca9fdf 4194 res = 0;
be51bd45 4195 while ((cmd = strsep(&buf, ","))) {
26217796 4196 if (strstarts(cmd, "enable")) {
406e988b 4197 hotkey_enabledisable_warn(1);
26217796 4198 } else if (strstarts(cmd, "disable")) {
406e988b 4199 hotkey_enabledisable_warn(0);
2586d566 4200 res = -EPERM;
26217796 4201 } else if (strstarts(cmd, "reset")) {
20c9aa46
HMH		 4202 mask = (hotkey_all_mask | hotkey_source_mask)
4203 & ~hotkey_reserved_mask;
1da177e4
LT		 4204 } else if (sscanf(cmd, "0x%x", &mask) == 1) {
4205 /* mask set */
4206 } else if (sscanf(cmd, "%x", &mask) == 1) {
4207 /* mask set */
40ca9fdf
HMH		 4208 } else {
4209 res = -EINVAL;
4210 goto errexit;
4211 }
1da177e4 4212 }
56e2c200 4213
0d922e3b 4214 if (!res) {
56e2c200
HMH		 4215 tpacpi_disclose_usertask("procfs hotkey",
4216 "set mask to 0x%08x\n", mask);
0d922e3b
HMH		 4217 res = hotkey_user_mask_set(mask);
4218 }
1da177e4 4219
40ca9fdf
HMH		 4220errexit:
4221 mutex_unlock(&hotkey_mutex);
4222 return res;
78f81cc4 4223}
1da177e4 4224
1ba90e3a 4225static const struct acpi_device_id ibm_htk_device_ids[] = {
9fbdaeb4
MI		 4226 {TPACPI_ACPI_IBM_HKEY_HID, 0},
4227 {TPACPI_ACPI_LENOVO_HKEY_HID, 0},
a3c42a46 4228 {TPACPI_ACPI_LENOVO_HKEY_V2_HID, 0},
1ba90e3a
TR		 4229 {"", 0},
4230};
4231
8d376cd6 4232static struct tp_acpi_drv_struct ibm_hotkey_acpidriver = {
1ba90e3a 4233 .hid = ibm_htk_device_ids,
8d376cd6
HMH		 4234 .notify = hotkey_notify,
4235 .handle = &hkey_handle,
4236 .type = ACPI_DEVICE_NOTIFY,
4237};
4238
a5763f22
HMH		 4239static struct ibm_struct hotkey_driver_data = {
4240 .name = "hotkey",
a5763f22
HMH		 4241 .read = hotkey_read,
4242 .write = hotkey_write,
4243 .exit = hotkey_exit,
5c29d58f 4244 .resume = hotkey_resume,
a713b4d7 4245 .suspend = hotkey_suspend,
8d376cd6 4246 .acpi = &ibm_hotkey_acpidriver,
a5763f22
HMH		 4247};
4248
56b6aeb0
HMH		 4249/*************************************************************************
4250 * Bluetooth subdriver
4251 */
1da177e4 4252
f74a27d4
HMH		 4253enum {
4254 /* ACPI GBDC/SBDC bits */
4255 TP_ACPI_BLUETOOTH_HWPRESENT = 0x01, /* Bluetooth hw available */
4256 TP_ACPI_BLUETOOTH_RADIOSSW = 0x02, /* Bluetooth radio enabled */
153f8220 4257 TP_ACPI_BLUETOOTH_RESUMECTRL = 0x04, /* Bluetooth state at resume:
08fedfc9 4258 0 = disable, 1 = enable */
153f8220
HMH		 4259};
4260
4261enum {
4262 /* ACPI \BLTH commands */
4263 TP_ACPI_BLTH_GET_ULTRAPORT_ID = 0x00, /* Get Ultraport BT ID */
4264 TP_ACPI_BLTH_GET_PWR_ON_RESUME = 0x01, /* Get power-on-resume state */
4265 TP_ACPI_BLTH_PWR_ON_ON_RESUME = 0x02, /* Resume powered on */
4266 TP_ACPI_BLTH_PWR_OFF_ON_RESUME = 0x03, /* Resume powered off */
4267 TP_ACPI_BLTH_SAVE_STATE = 0x05, /* Save state for S4/S5 */
f74a27d4
HMH		 4268};
4269
bee4cd9b
HMH		 4270#define TPACPI_RFK_BLUETOOTH_SW_NAME "tpacpi_bluetooth_sw"
4271
19d337df 4272static int bluetooth_get_status(void)
07431ec8
HMH		 4273{
4274 int status;
4275
a73f3091
HMH		 4276#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
4277 if (dbg_bluetoothemul)
4278 return (tpacpi_bluetooth_emulstate) ?
19d337df 4279 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF;
a73f3091
HMH		 4280#endif
4281
07431ec8
HMH		 4282 if (!acpi_evalf(hkey_handle, &status, "GBDC", "d"))
4283 return -EIO;
4284
0e74dc26 4285 return ((status & TP_ACPI_BLUETOOTH_RADIOSSW) != 0) ?
19d337df 4286 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF;
07431ec8
HMH		 4287}
4288
19d337df 4289static int bluetooth_set_status(enum tpacpi_rfkill_state state)
0e74dc26
HMH		 4290{
4291 int status;
4292
664607f5
AS		 4293 vdbg_printk(TPACPI_DBG_RFKILL, "will attempt to %s bluetooth\n",
4294 str_enable_disable(state == TPACPI_RFK_RADIO_ON));
bee4cd9b 4295
a73f3091
HMH		 4296#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
4297 if (dbg_bluetoothemul) {
19d337df 4298 tpacpi_bluetooth_emulstate = (state == TPACPI_RFK_RADIO_ON);
a73f3091
HMH		 4299 return 0;
4300 }
4301#endif
4302
19d337df 4303 if (state == TPACPI_RFK_RADIO_ON)
08fedfc9
HMH		 4304 status = TP_ACPI_BLUETOOTH_RADIOSSW
4305 | TP_ACPI_BLUETOOTH_RESUMECTRL;
4306 else
4307 status = 0;
19d337df 4308
07431ec8
HMH		 4309 if (!acpi_evalf(hkey_handle, NULL, "SBDC", "vd", status))
4310 return -EIO;
4311
4312 return 0;
4313}
f74a27d4 4314
d3a6ade4
HMH		 4315/* sysfs bluetooth enable ---------------------------------------------- */
4316static ssize_t bluetooth_enable_show(struct device *dev,
4317 struct device_attribute *attr,
4318 char *buf)
4319{
19d337df
JB		 4320 return tpacpi_rfk_sysfs_enable_show(TPACPI_RFK_BLUETOOTH_SW_ID,
4321 attr, buf);
d3a6ade4
HMH		 4322}
4323
4324static ssize_t bluetooth_enable_store(struct device *dev,
4325 struct device_attribute *attr,
4326 const char *buf, size_t count)
4327{
19d337df
JB		 4328 return tpacpi_rfk_sysfs_enable_store(TPACPI_RFK_BLUETOOTH_SW_ID,
4329 attr, buf, count);
d3a6ade4
HMH		 4330}
4331
b4dd04ac 4332static DEVICE_ATTR_RW(bluetooth_enable);
d3a6ade4
HMH		 4333
4334/* --------------------------------------------------------------------- */
4335
4336static struct attribute *bluetooth_attributes[] = {
4337 &dev_attr_bluetooth_enable.attr,
4338 NULL
4339};
4340
79f960e2
LB		 4341static umode_t bluetooth_attr_is_visible(struct kobject *kobj,
4342 struct attribute *attr, int n)
4343{
4344 return tp_features.bluetooth ? attr->mode : 0;
4345}
4346
d3a6ade4 4347static const struct attribute_group bluetooth_attr_group = {
79f960e2 4348 .is_visible = bluetooth_attr_is_visible,
d3a6ade4
HMH		 4349 .attrs = bluetooth_attributes,
4350};
4351
19d337df
JB		 4352static const struct tpacpi_rfk_ops bluetooth_tprfk_ops = {
4353 .get_status = bluetooth_get_status,
4354 .set_status = bluetooth_set_status,
4355};
0e74dc26 4356
90d9d3c7
HMH		 4357static void bluetooth_shutdown(void)
4358{
4359 /* Order firmware to save current state to NVRAM */
4360 if (!acpi_evalf(NULL, NULL, "\\BLTH", "vd",
4361 TP_ACPI_BLTH_SAVE_STATE))
0978e012 4362 pr_notice("failed to save bluetooth state to NVRAM\n");
bee4cd9b
HMH		 4363 else
4364 vdbg_printk(TPACPI_DBG_RFKILL,
1f01358c 4365 "bluetooth state saved to NVRAM\n");
90d9d3c7
HMH		 4366}
4367
07431ec8
HMH		 4368static void bluetooth_exit(void)
4369{
19d337df 4370 tpacpi_destroy_rfkill(TPACPI_RFK_BLUETOOTH_SW_ID);
19d337df 4371 bluetooth_shutdown();
07431ec8
HMH		 4372}
4373
c25d7f32 4374static const struct dmi_system_id fwbug_list[] __initconst = {
f7db839f
JY		 4375 {
4376 .ident = "ThinkPad E485",
c25d7f32 4377 .driver_data = &quirk_btusb_bug,
f7db839f
JY		 4378 .matches = {
4379 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
4380 DMI_MATCH(DMI_BOARD_NAME, "20KU"),
4381 },
4382 },
4383 {
4384 .ident = "ThinkPad E585",
c25d7f32 4385 .driver_data = &quirk_btusb_bug,
f7db839f
JY		 4386 .matches = {
4387 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
4388 DMI_MATCH(DMI_BOARD_NAME, "20KV"),
4389 },
4390 },
4391 {
4392 .ident = "ThinkPad A285 - 20MW",
c25d7f32 4393 .driver_data = &quirk_btusb_bug,
f7db839f
JY		 4394 .matches = {
4395 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
4396 DMI_MATCH(DMI_BOARD_NAME, "20MW"),
4397 },
4398 },
4399 {
4400 .ident = "ThinkPad A285 - 20MX",
c25d7f32 4401 .driver_data = &quirk_btusb_bug,
f7db839f
JY		 4402 .matches = {
4403 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
4404 DMI_MATCH(DMI_BOARD_NAME, "20MX"),
4405 },
4406 },
4407 {
4408 .ident = "ThinkPad A485 - 20MU",
c25d7f32 4409 .driver_data = &quirk_btusb_bug,
f7db839f
JY		 4410 .matches = {
4411 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
4412 DMI_MATCH(DMI_BOARD_NAME, "20MU"),
4413 },
4414 },
4415 {
4416 .ident = "ThinkPad A485 - 20MV",
c25d7f32 4417 .driver_data = &quirk_btusb_bug,
f7db839f
JY		 4418 .matches = {
4419 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
4420 DMI_MATCH(DMI_BOARD_NAME, "20MV"),
4421 },
4422 },
4423 {}
4424};
4425
4426static const struct pci_device_id fwbug_cards_ids[] __initconst = {
4427 { PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x24F3) },
4428 { PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x24FD) },
4429 { PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x2526) },
4430 {}
4431};
4432
4433
4434static int __init have_bt_fwbug(void)
4435{
4436 /*
4437 * Some AMD based ThinkPads have a firmware bug that calling
4438 * "GBDC" will cause bluetooth on Intel wireless cards blocked
4439 */
c25d7f32
ML		 4440 if (tp_features.quirks && tp_features.quirks->btusb_bug &&
4441 pci_dev_present(fwbug_cards_ids)) {
f7db839f
JY		 4442 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL,
4443 FW_BUG "disable bluetooth subdriver for Intel cards\n");
4444 return 1;
4445 } else
4446 return 0;
4447}
4448
a5763f22 4449static int __init bluetooth_init(struct ibm_init_struct *iibm)
1da177e4 4450{
d3a6ade4 4451 int res;
d6fdd1e9
HMH		 4452 int status = 0;
4453
bee4cd9b
HMH		 4454 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL,
4455 "initializing bluetooth subdriver\n");
fe08bc4b 4456
e0c7dfe7 4457 TPACPI_ACPIHANDLE_INIT(hkey);
5fba344c 4458
78f81cc4
BD		 4459 /* bluetooth not supported on 570, 600e/x, 770e, 770x, A21e, A2xm/p,
4460 G4x, R30, R31, R40e, R50e, T20-22, X20-21 */
f7db839f 4461 tp_features.bluetooth = !have_bt_fwbug() && hkey_handle &&
d6fdd1e9
HMH		 4462 acpi_evalf(hkey_handle, &status, "GBDC", "qd");
4463
bee4cd9b
HMH		 4464 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL,
4465 "bluetooth is %s, status 0x%02x\n",
d6fdd1e9
HMH		 4466 str_supported(tp_features.bluetooth),
4467 status);
4468
a73f3091
HMH		 4469#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
4470 if (dbg_bluetoothemul) {
4471 tp_features.bluetooth = 1;
0978e012 4472 pr_info("bluetooth switch emulation enabled\n");
a73f3091
HMH		 4473 } else
4474#endif
3a872080
HMH		 4475 if (tp_features.bluetooth &&
4476 !(status & TP_ACPI_BLUETOOTH_HWPRESENT)) {
4477 /* no bluetooth hardware present in system */
4478 tp_features.bluetooth = 0;
bee4cd9b 4479 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL,
3a872080
HMH		 4480 "bluetooth hardware not installed\n");
4481 }
4482
0e74dc26 4483 if (!tp_features.bluetooth)
c7e1c782 4484 return -ENODEV;
0e74dc26 4485
0e74dc26 4486 res = tpacpi_new_rfkill(TPACPI_RFK_BLUETOOTH_SW_ID,
19d337df 4487 &bluetooth_tprfk_ops,
0e74dc26 4488 RFKILL_TYPE_BLUETOOTH,
bee4cd9b 4489 TPACPI_RFK_BLUETOOTH_SW_NAME,
19d337df 4490 true);
79f960e2 4491 return res;
1da177e4
LT		 4492}
4493
d3a6ade4 4494/* procfs -------------------------------------------------------------- */
887965e6 4495static int bluetooth_read(struct seq_file *m)
1da177e4 4496{
887965e6 4497 return tpacpi_rfk_procfs_read(TPACPI_RFK_BLUETOOTH_SW_ID, m);
1da177e4
LT		 4498}
4499
78f81cc4 4500static int bluetooth_write(char *buf)
1da177e4 4501{
19d337df 4502 return tpacpi_rfk_procfs_write(TPACPI_RFK_BLUETOOTH_SW_ID, buf);
1da177e4
LT		 4503}
4504
a5763f22
HMH		 4505static struct ibm_struct bluetooth_driver_data = {
4506 .name = "bluetooth",
4507 .read = bluetooth_read,
4508 .write = bluetooth_write,
d3a6ade4 4509 .exit = bluetooth_exit,
90d9d3c7 4510 .shutdown = bluetooth_shutdown,
a5763f22
HMH		 4511};
4512
56b6aeb0
HMH		 4513/*************************************************************************
4514 * Wan subdriver
4515 */
4516
f74a27d4
HMH		 4517enum {
4518 /* ACPI GWAN/SWAN bits */
4519 TP_ACPI_WANCARD_HWPRESENT = 0x01, /* Wan hw available */
4520 TP_ACPI_WANCARD_RADIOSSW = 0x02, /* Wan radio enabled */
153f8220 4521 TP_ACPI_WANCARD_RESUMECTRL = 0x04, /* Wan state at resume:
08fedfc9 4522 0 = disable, 1 = enable */
f74a27d4
HMH		 4523};
4524
bee4cd9b
HMH		 4525#define TPACPI_RFK_WWAN_SW_NAME "tpacpi_wwan_sw"
4526
19d337df 4527static int wan_get_status(void)
07431ec8
HMH		 4528{
4529 int status;
4530
a73f3091
HMH		 4531#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
4532 if (dbg_wwanemul)
4533 return (tpacpi_wwan_emulstate) ?
19d337df 4534 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF;
a73f3091
HMH		 4535#endif
4536
07431ec8
HMH		 4537 if (!acpi_evalf(hkey_handle, &status, "GWAN", "d"))
4538 return -EIO;
4539
0e74dc26 4540 return ((status & TP_ACPI_WANCARD_RADIOSSW) != 0) ?
19d337df 4541 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF;
0e74dc26
HMH		 4542}
4543
19d337df 4544static int wan_set_status(enum tpacpi_rfkill_state state)
07431ec8
HMH		 4545{
4546 int status;
4547
664607f5
AS		 4548 vdbg_printk(TPACPI_DBG_RFKILL, "will attempt to %s wwan\n",
4549 str_enable_disable(state == TPACPI_RFK_RADIO_ON));
bee4cd9b 4550
a73f3091
HMH		 4551#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
4552 if (dbg_wwanemul) {
19d337df 4553 tpacpi_wwan_emulstate = (state == TPACPI_RFK_RADIO_ON);
a73f3091
HMH		 4554 return 0;
4555 }
4556#endif
4557
19d337df 4558 if (state == TPACPI_RFK_RADIO_ON)
08fedfc9
HMH		 4559 status = TP_ACPI_WANCARD_RADIOSSW
4560 | TP_ACPI_WANCARD_RESUMECTRL;
4561 else
4562 status = 0;
19d337df 4563
07431ec8
HMH		 4564 if (!acpi_evalf(hkey_handle, NULL, "SWAN", "vd", status))
4565 return -EIO;
4566
4567 return 0;
4568}
f74a27d4 4569
d3a6ade4
HMH		 4570/* sysfs wan enable ---------------------------------------------------- */
4571static ssize_t wan_enable_show(struct device *dev,
4572 struct device_attribute *attr,
4573 char *buf)
4574{
19d337df
JB		 4575 return tpacpi_rfk_sysfs_enable_show(TPACPI_RFK_WWAN_SW_ID,
4576 attr, buf);
d3a6ade4
HMH		 4577}
4578
4579static ssize_t wan_enable_store(struct device *dev,
4580 struct device_attribute *attr,
4581 const char *buf, size_t count)
4582{
19d337df
JB		 4583 return tpacpi_rfk_sysfs_enable_store(TPACPI_RFK_WWAN_SW_ID,
4584 attr, buf, count);
d3a6ade4
HMH		 4585}
4586
5fb73bc2
BM		 4587static DEVICE_ATTR(wwan_enable, S_IWUSR | S_IRUGO,
4588 wan_enable_show, wan_enable_store);
d3a6ade4
HMH		 4589
4590/* --------------------------------------------------------------------- */
4591
4592static struct attribute *wan_attributes[] = {
5fb73bc2 4593 &dev_attr_wwan_enable.attr,
d3a6ade4
HMH		 4594 NULL
4595};
4596
79f960e2
LB		 4597static umode_t wan_attr_is_visible(struct kobject *kobj, struct attribute *attr,
4598 int n)
4599{
4600 return tp_features.wan ? attr->mode : 0;
4601}
4602
d3a6ade4 4603static const struct attribute_group wan_attr_group = {
79f960e2 4604 .is_visible = wan_attr_is_visible,
d3a6ade4
HMH		 4605 .attrs = wan_attributes,
4606};
4607
19d337df
JB		 4608static const struct tpacpi_rfk_ops wan_tprfk_ops = {
4609 .get_status = wan_get_status,
4610 .set_status = wan_set_status,
4611};
0e74dc26 4612
90d9d3c7
HMH		 4613static void wan_shutdown(void)
4614{
4615 /* Order firmware to save current state to NVRAM */
4616 if (!acpi_evalf(NULL, NULL, "\\WGSV", "vd",
4617 TP_ACPI_WGSV_SAVE_STATE))
0978e012 4618 pr_notice("failed to save WWAN state to NVRAM\n");
bee4cd9b
HMH		 4619 else
4620 vdbg_printk(TPACPI_DBG_RFKILL,
4621 "WWAN state saved to NVRAM\n");
90d9d3c7
HMH		 4622}
4623
07431ec8
HMH		 4624static void wan_exit(void)
4625{
19d337df 4626 tpacpi_destroy_rfkill(TPACPI_RFK_WWAN_SW_ID);
19d337df 4627 wan_shutdown();
07431ec8
HMH		 4628}
4629
a5763f22 4630static int __init wan_init(struct ibm_init_struct *iibm)
42adb53c 4631{
d3a6ade4 4632 int res;
d6fdd1e9
HMH		 4633 int status = 0;
4634
bee4cd9b
HMH		 4635 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL,
4636 "initializing wan subdriver\n");
fe08bc4b 4637
e0c7dfe7 4638 TPACPI_ACPIHANDLE_INIT(hkey);
5fba344c 4639
d8fd94d9 4640 tp_features.wan = hkey_handle &&
d6fdd1e9
HMH		 4641 acpi_evalf(hkey_handle, &status, "GWAN", "qd");
4642
bee4cd9b
HMH		 4643 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL,
4644 "wan is %s, status 0x%02x\n",
d6fdd1e9
HMH		 4645 str_supported(tp_features.wan),
4646 status);
4647
a73f3091
HMH		 4648#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
4649 if (dbg_wwanemul) {
4650 tp_features.wan = 1;
0978e012 4651 pr_info("wwan switch emulation enabled\n");
a73f3091
HMH		 4652 } else
4653#endif
3a872080
HMH		 4654 if (tp_features.wan &&
4655 !(status & TP_ACPI_WANCARD_HWPRESENT)) {
4656 /* no wan hardware present in system */
4657 tp_features.wan = 0;
bee4cd9b 4658 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL,
3a872080
HMH		 4659 "wan hardware not installed\n");
4660 }
4661
0e74dc26 4662 if (!tp_features.wan)
c7e1c782 4663 return -ENODEV;
0e74dc26 4664
0e74dc26 4665 res = tpacpi_new_rfkill(TPACPI_RFK_WWAN_SW_ID,
19d337df 4666 &wan_tprfk_ops,
0e74dc26 4667 RFKILL_TYPE_WWAN,
bee4cd9b 4668 TPACPI_RFK_WWAN_SW_NAME,
19d337df 4669 true);
79f960e2 4670 return res;
42adb53c
JF		 4671}
4672
d3a6ade4 4673/* procfs -------------------------------------------------------------- */
887965e6 4674static int wan_read(struct seq_file *m)
42adb53c 4675{
887965e6 4676 return tpacpi_rfk_procfs_read(TPACPI_RFK_WWAN_SW_ID, m);
42adb53c
JF		 4677}
4678
4679static int wan_write(char *buf)
4680{
19d337df 4681 return tpacpi_rfk_procfs_write(TPACPI_RFK_WWAN_SW_ID, buf);
42adb53c
JF		 4682}
4683
a5763f22
HMH		 4684static struct ibm_struct wan_driver_data = {
4685 .name = "wan",
4686 .read = wan_read,
4687 .write = wan_write,
d3a6ade4 4688 .exit = wan_exit,
90d9d3c7 4689 .shutdown = wan_shutdown,
a5763f22
HMH		 4690};
4691
0045c0aa
HMH		 4692/*************************************************************************
4693 * UWB subdriver
4694 */
4695
4696enum {
4697 /* ACPI GUWB/SUWB bits */
4698 TP_ACPI_UWB_HWPRESENT = 0x01, /* UWB hw available */
4699 TP_ACPI_UWB_RADIOSSW = 0x02, /* UWB radio enabled */
4700};
4701
bee4cd9b
HMH		 4702#define TPACPI_RFK_UWB_SW_NAME "tpacpi_uwb_sw"
4703
19d337df 4704static int uwb_get_status(void)
0045c0aa
HMH		 4705{
4706 int status;
4707
0045c0aa
HMH		 4708#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
4709 if (dbg_uwbemul)
4710 return (tpacpi_uwb_emulstate) ?
19d337df 4711 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF;
0045c0aa
HMH		 4712#endif
4713
4714 if (!acpi_evalf(hkey_handle, &status, "GUWB", "d"))
4715 return -EIO;
4716
4717 return ((status & TP_ACPI_UWB_RADIOSSW) != 0) ?
19d337df 4718 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF;
0045c0aa
HMH		 4719}
4720
19d337df 4721static int uwb_set_status(enum tpacpi_rfkill_state state)
0045c0aa
HMH		 4722{
4723 int status;
4724
664607f5
AS		 4725 vdbg_printk(TPACPI_DBG_RFKILL, "will attempt to %s UWB\n",
4726 str_enable_disable(state == TPACPI_RFK_RADIO_ON));
bee4cd9b 4727
0045c0aa
HMH		 4728#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
4729 if (dbg_uwbemul) {
19d337df 4730 tpacpi_uwb_emulstate = (state == TPACPI_RFK_RADIO_ON);
0045c0aa
HMH		 4731 return 0;
4732 }
4733#endif
4734
19d337df
JB		 4735 if (state == TPACPI_RFK_RADIO_ON)
4736 status = TP_ACPI_UWB_RADIOSSW;
4737 else
4738 status = 0;
4739
0045c0aa
HMH		 4740 if (!acpi_evalf(hkey_handle, NULL, "SUWB", "vd", status))
4741 return -EIO;
4742
0045c0aa
HMH		 4743 return 0;
4744}
4745
4746/* --------------------------------------------------------------------- */
4747
19d337df
JB		 4748static const struct tpacpi_rfk_ops uwb_tprfk_ops = {
4749 .get_status = uwb_get_status,
4750 .set_status = uwb_set_status,
4751};
0045c0aa
HMH		 4752
4753static void uwb_exit(void)
4754{
19d337df 4755 tpacpi_destroy_rfkill(TPACPI_RFK_UWB_SW_ID);
0045c0aa
HMH		 4756}
4757
4758static int __init uwb_init(struct ibm_init_struct *iibm)
4759{
4760 int res;
4761 int status = 0;
4762
bee4cd9b
HMH		 4763 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL,
4764 "initializing uwb subdriver\n");
0045c0aa
HMH		 4765
4766 TPACPI_ACPIHANDLE_INIT(hkey);
4767
4768 tp_features.uwb = hkey_handle &&
4769 acpi_evalf(hkey_handle, &status, "GUWB", "qd");
4770
bee4cd9b
HMH		 4771 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL,
4772 "uwb is %s, status 0x%02x\n",
0045c0aa
HMH		 4773 str_supported(tp_features.uwb),
4774 status);
4775
4776#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
4777 if (dbg_uwbemul) {
4778 tp_features.uwb = 1;
0978e012 4779 pr_info("uwb switch emulation enabled\n");
0045c0aa
HMH		 4780 } else
4781#endif
4782 if (tp_features.uwb &&
4783 !(status & TP_ACPI_UWB_HWPRESENT)) {
4784 /* no uwb hardware present in system */
4785 tp_features.uwb = 0;
4786 dbg_printk(TPACPI_DBG_INIT,
4787 "uwb hardware not installed\n");
4788 }
4789
4790 if (!tp_features.uwb)
c7e1c782 4791 return -ENODEV;
0045c0aa
HMH		 4792
4793 res = tpacpi_new_rfkill(TPACPI_RFK_UWB_SW_ID,
19d337df 4794 &uwb_tprfk_ops,
0045c0aa 4795 RFKILL_TYPE_UWB,
bee4cd9b 4796 TPACPI_RFK_UWB_SW_NAME,
19d337df 4797 false);
0045c0aa
HMH		 4798 return res;
4799}
4800
4801static struct ibm_struct uwb_driver_data = {
4802 .name = "uwb",
4803 .exit = uwb_exit,
4804 .flags.experimental = 1,
4805};
4806
56b6aeb0
HMH		 4807/*************************************************************************
4808 * Video subdriver
4809 */
4810
d7c1d17d
HMH		 4811#ifdef CONFIG_THINKPAD_ACPI_VIDEO
4812
f74a27d4
HMH		 4813enum video_access_mode {
4814 TPACPI_VIDEO_NONE = 0,
4815 TPACPI_VIDEO_570, /* 570 */
4816 TPACPI_VIDEO_770, /* 600e/x, 770e, 770x */
4817 TPACPI_VIDEO_NEW, /* all others */
4818};
4819
4820enum { /* video status flags, based on VIDEO_570 */
4821 TP_ACPI_VIDEO_S_LCD = 0x01, /* LCD output enabled */
4822 TP_ACPI_VIDEO_S_CRT = 0x02, /* CRT output enabled */
4823 TP_ACPI_VIDEO_S_DVI = 0x08, /* DVI output enabled */
4824};
4825
4826enum { /* TPACPI_VIDEO_570 constants */
4827 TP_ACPI_VIDEO_570_PHSCMD = 0x87, /* unknown magic constant :( */
4828 TP_ACPI_VIDEO_570_PHSMASK = 0x03, /* PHS bits that map to
4829 * video_status_flags */
4830 TP_ACPI_VIDEO_570_PHS2CMD = 0x8b, /* unknown magic constant :( */
4831 TP_ACPI_VIDEO_570_PHS2SET = 0x80, /* unknown magic constant :( */
4832};
4833
9a8e1738
HMH		 4834static enum video_access_mode video_supported;
4835static int video_orig_autosw;
78f81cc4 4836
f74a27d4
HMH		 4837static int video_autosw_get(void);
4838static int video_autosw_set(int enable);
4839
112a6ee0
JP		 4840TPACPI_HANDLE(vid, root,
4841 "\\_SB.PCI.AGP.VGA", /* 570 */
4842 "\\_SB.PCI0.AGP0.VID0", /* 600e/x, 770x */
4843 "\\_SB.PCI0.VID0", /* 770e */
4844 "\\_SB.PCI0.VID", /* A21e, G4x, R50e, X30, X40 */
4845 "\\_SB.PCI0.AGP.VGA", /* X100e and a few others */
4846 "\\_SB.PCI0.AGP.VID", /* all others */
4847 ); /* R30, R31 */
4848
e0c7dfe7 4849TPACPI_HANDLE(vid2, root, "\\_SB.PCI0.AGPB.VID"); /* G41 */
56b6aeb0 4850
a5763f22 4851static int __init video_init(struct ibm_init_struct *iibm)
1da177e4 4852{
78f81cc4
BD		 4853 int ivga;
4854
fe08bc4b
HMH		 4855 vdbg_printk(TPACPI_DBG_INIT, "initializing video subdriver\n");
4856
e0c7dfe7 4857 TPACPI_ACPIHANDLE_INIT(vid);
e28393c0
HMH		 4858 if (tpacpi_is_ibm())
4859 TPACPI_ACPIHANDLE_INIT(vid2);
5fba344c 4860
78f81cc4
BD		 4861 if (vid2_handle && acpi_evalf(NULL, &ivga, "\\IVGA", "d") && ivga)
4862 /* G41, assume IVGA doesn't change */
4863 vid_handle = vid2_handle;
4864
4865 if (!vid_handle)
4866 /* video switching not supported on R30, R31 */
efa27145 4867 video_supported = TPACPI_VIDEO_NONE;
e28393c0
HMH		 4868 else if (tpacpi_is_ibm() &&
4869 acpi_evalf(vid_handle, &video_orig_autosw, "SWIT", "qd"))
78f81cc4 4870 /* 570 */
efa27145 4871 video_supported = TPACPI_VIDEO_570;
e28393c0
HMH		 4872 else if (tpacpi_is_ibm() &&
4873 acpi_evalf(vid_handle, &video_orig_autosw, "^VADL", "qd"))
78f81cc4 4874 /* 600e/x, 770e, 770x */
efa27145 4875 video_supported = TPACPI_VIDEO_770;
78f81cc4
BD		 4876 else
4877 /* all others */
efa27145 4878 video_supported = TPACPI_VIDEO_NEW;
1da177e4 4879
fe08bc4b
HMH		 4880 vdbg_printk(TPACPI_DBG_INIT, "video is %s, mode %d\n",
4881 str_supported(video_supported != TPACPI_VIDEO_NONE),
4882 video_supported);
4883
c7e1c782 4884 return (video_supported != TPACPI_VIDEO_NONE) ? 0 : -ENODEV;
1da177e4
LT		 4885}
4886
56b6aeb0
HMH		 4887static void video_exit(void)
4888{
83f34724
HMH		 4889 dbg_printk(TPACPI_DBG_EXIT,
4890 "restoring original video autoswitch mode\n");
4891 if (video_autosw_set(video_orig_autosw))
5cac62ac 4892 pr_err("error while trying to restore original video autoswitch mode\n");
56b6aeb0
HMH		 4893}
4894
83f34724 4895static int video_outputsw_get(void)
1da177e4
LT		 4896{
4897 int status = 0;
4898 int i;
4899
83f34724
HMH		 4900 switch (video_supported) {
4901 case TPACPI_VIDEO_570:
4902 if (!acpi_evalf(NULL, &i, "\\_SB.PHS", "dd",
4903 TP_ACPI_VIDEO_570_PHSCMD))
4904 return -EIO;
4905 status = i & TP_ACPI_VIDEO_570_PHSMASK;
4906 break;
4907 case TPACPI_VIDEO_770:
4908 if (!acpi_evalf(NULL, &i, "\\VCDL", "d"))
4909 return -EIO;
4910 if (i)
4911 status |= TP_ACPI_VIDEO_S_LCD;
4912 if (!acpi_evalf(NULL, &i, "\\VCDC", "d"))
4913 return -EIO;
4914 if (i)
4915 status |= TP_ACPI_VIDEO_S_CRT;
4916 break;
4917 case TPACPI_VIDEO_NEW:
4918 if (!acpi_evalf(NULL, NULL, "\\VUPS", "vd", 1) ||
4919 !acpi_evalf(NULL, &i, "\\VCDC", "d"))
4920 return -EIO;
4921 if (i)
4922 status |= TP_ACPI_VIDEO_S_CRT;
4923
4924 if (!acpi_evalf(NULL, NULL, "\\VUPS", "vd", 0) ||
4925 !acpi_evalf(NULL, &i, "\\VCDL", "d"))
4926 return -EIO;
4927 if (i)
4928 status |= TP_ACPI_VIDEO_S_LCD;
4929 if (!acpi_evalf(NULL, &i, "\\VCDD", "d"))
4930 return -EIO;
4931 if (i)
4932 status |= TP_ACPI_VIDEO_S_DVI;
4933 break;
4934 default:
4935 return -ENOSYS;
78f81cc4
BD		 4936 }
4937
4938 return status;
4939}
1da177e4 4940
83f34724 4941static int video_outputsw_set(int status)
78f81cc4 4942{
83f34724
HMH		 4943 int autosw;
4944 int res = 0;
4945
4946 switch (video_supported) {
4947 case TPACPI_VIDEO_570:
4948 res = acpi_evalf(NULL, NULL,
4949 "\\_SB.PHS2", "vdd",
4950 TP_ACPI_VIDEO_570_PHS2CMD,
4951 status | TP_ACPI_VIDEO_570_PHS2SET);
4952 break;
4953 case TPACPI_VIDEO_770:
4954 autosw = video_autosw_get();
4955 if (autosw < 0)
4956 return autosw;
1da177e4 4957
83f34724
HMH		 4958 res = video_autosw_set(1);
4959 if (res)
4960 return res;
4961 res = acpi_evalf(vid_handle, NULL,
4962 "ASWT", "vdd", status * 0x100, 0);
4963 if (!autosw && video_autosw_set(autosw)) {
0978e012 4964 pr_err("video auto-switch left enabled due to error\n");
83f34724
HMH		 4965 return -EIO;
4966 }
4967 break;
4968 case TPACPI_VIDEO_NEW:
4969 res = acpi_evalf(NULL, NULL, "\\VUPS", "vd", 0x80) &&
35ff8b9f 4970 acpi_evalf(NULL, NULL, "\\VSDS", "vdd", status, 1);
83f34724
HMH		 4971 break;
4972 default:
4973 return -ENOSYS;
4974 }
1da177e4 4975
72a979f0 4976 return (res) ? 0 : -EIO;
1da177e4
LT		 4977}
4978
83f34724 4979static int video_autosw_get(void)
78f81cc4 4980{
83f34724 4981 int autosw = 0;
78f81cc4 4982
83f34724
HMH		 4983 switch (video_supported) {
4984 case TPACPI_VIDEO_570:
4985 if (!acpi_evalf(vid_handle, &autosw, "SWIT", "d"))
4986 return -EIO;
4987 break;
4988 case TPACPI_VIDEO_770:
4989 case TPACPI_VIDEO_NEW:
4990 if (!acpi_evalf(vid_handle, &autosw, "^VDEE", "d"))
4991 return -EIO;
4992 break;
4993 default:
4994 return -ENOSYS;
4995 }
78f81cc4 4996
83f34724 4997 return autosw & 1;
78f81cc4
BD		 4998}
4999
83f34724 5000static int video_autosw_set(int enable)
78f81cc4 5001{
72a979f0 5002 if (!acpi_evalf(vid_handle, NULL, "_DOS", "vd", (enable) ? 1 : 0))
83f34724
HMH		 5003 return -EIO;
5004 return 0;
78f81cc4
BD		 5005}
5006
83f34724 5007static int video_outputsw_cycle(void)
78f81cc4 5008{
83f34724
HMH		 5009 int autosw = video_autosw_get();
5010 int res;
78f81cc4 5011
83f34724
HMH		 5012 if (autosw < 0)
5013 return autosw;
78f81cc4 5014
83f34724
HMH		 5015 switch (video_supported) {
5016 case TPACPI_VIDEO_570:
5017 res = video_autosw_set(1);
5018 if (res)
5019 return res;
5020 res = acpi_evalf(ec_handle, NULL, "_Q16", "v");
5021 break;
5022 case TPACPI_VIDEO_770:
5023 case TPACPI_VIDEO_NEW:
5024 res = video_autosw_set(1);
5025 if (res)
5026 return res;
5027 res = acpi_evalf(vid_handle, NULL, "VSWT", "v");
5028 break;
5029 default:
5030 return -ENOSYS;
5031 }
5032 if (!autosw && video_autosw_set(autosw)) {
0978e012 5033 pr_err("video auto-switch left enabled due to error\n");
83f34724 5034 return -EIO;
78f81cc4
BD		 5035 }
5036
72a979f0 5037 return (res) ? 0 : -EIO;
83f34724
HMH		 5038}
5039
5040static int video_expand_toggle(void)
5041{
5042 switch (video_supported) {
5043 case TPACPI_VIDEO_570:
72a979f0 5044 return acpi_evalf(ec_handle, NULL, "_Q17", "v") ?
83f34724
HMH		 5045 0 : -EIO;
5046 case TPACPI_VIDEO_770:
72a979f0 5047 return acpi_evalf(vid_handle, NULL, "VEXP", "v") ?
83f34724
HMH		 5048 0 : -EIO;
5049 case TPACPI_VIDEO_NEW:
72a979f0 5050 return acpi_evalf(NULL, NULL, "\\VEXP", "v") ?
83f34724
HMH		 5051 0 : -EIO;
5052 default:
5053 return -ENOSYS;
5054 }
5055 /* not reached */
78f81cc4
BD		 5056}
5057
887965e6 5058static int video_read(struct seq_file *m)
56b6aeb0 5059{
83f34724 5060 int status, autosw;
56b6aeb0 5061
83f34724 5062 if (video_supported == TPACPI_VIDEO_NONE) {
887965e6
AD		 5063 seq_printf(m, "status:\t\tnot supported\n");
5064 return 0;
56b6aeb0
HMH		 5065 }
5066
b525c06c
HMH		 5067 /* Even reads can crash X.org, so... */
5068 if (!capable(CAP_SYS_ADMIN))
5069 return -EPERM;
5070
83f34724
HMH		 5071 status = video_outputsw_get();
5072 if (status < 0)
5073 return status;
5074
5075 autosw = video_autosw_get();
5076 if (autosw < 0)
5077 return autosw;
5078
887965e6 5079 seq_printf(m, "status:\t\tsupported\n");
664607f5
AS		 5080 seq_printf(m, "lcd:\t\t%s\n", str_enabled_disabled(status & BIT(0)));
5081 seq_printf(m, "crt:\t\t%s\n", str_enabled_disabled(status & BIT(1)));
efa27145 5082 if (video_supported == TPACPI_VIDEO_NEW)
664607f5
AS		 5083 seq_printf(m, "dvi:\t\t%s\n", str_enabled_disabled(status & BIT(3)));
5084 seq_printf(m, "auto:\t\t%s\n", str_enabled_disabled(autosw & BIT(0)));
887965e6
AD		 5085 seq_printf(m, "commands:\tlcd_enable, lcd_disable\n");
5086 seq_printf(m, "commands:\tcrt_enable, crt_disable\n");
efa27145 5087 if (video_supported == TPACPI_VIDEO_NEW)
887965e6
AD		 5088 seq_printf(m, "commands:\tdvi_enable, dvi_disable\n");
5089 seq_printf(m, "commands:\tauto_enable, auto_disable\n");
5090 seq_printf(m, "commands:\tvideo_switch, expand_toggle\n");
56b6aeb0 5091
887965e6 5092 return 0;
56b6aeb0
HMH		 5093}
5094
78f81cc4 5095static int video_write(char *buf)
1da177e4
LT		 5096{
5097 char *cmd;
5098 int enable, disable, status;
83f34724 5099 int res;
1da177e4 5100
83f34724 5101 if (video_supported == TPACPI_VIDEO_NONE)
78f81cc4
BD		 5102 return -ENODEV;
5103
b525c06c
HMH		 5104 /* Even reads can crash X.org, let alone writes... */
5105 if (!capable(CAP_SYS_ADMIN))
5106 return -EPERM;
5107
83f34724
HMH		 5108 enable = 0;
5109 disable = 0;
1da177e4 5110
be51bd45 5111 while ((cmd = strsep(&buf, ","))) {
26217796 5112 if (strstarts(cmd, "lcd_enable")) {
83f34724 5113 enable |= TP_ACPI_VIDEO_S_LCD;
26217796 5114 } else if (strstarts(cmd, "lcd_disable")) {
83f34724 5115 disable |= TP_ACPI_VIDEO_S_LCD;
26217796 5116 } else if (strstarts(cmd, "crt_enable")) {
83f34724 5117 enable |= TP_ACPI_VIDEO_S_CRT;
26217796 5118 } else if (strstarts(cmd, "crt_disable")) {
83f34724 5119 disable |= TP_ACPI_VIDEO_S_CRT;
efa27145 5120 } else if (video_supported == TPACPI_VIDEO_NEW &&
26217796 5121 strstarts(cmd, "dvi_enable")) {
83f34724 5122 enable |= TP_ACPI_VIDEO_S_DVI;
efa27145 5123 } else if (video_supported == TPACPI_VIDEO_NEW &&
26217796 5124 strstarts(cmd, "dvi_disable")) {
83f34724 5125 disable |= TP_ACPI_VIDEO_S_DVI;
26217796 5126 } else if (strstarts(cmd, "auto_enable")) {
83f34724
HMH		 5127 res = video_autosw_set(1);
5128 if (res)
5129 return res;
26217796 5130 } else if (strstarts(cmd, "auto_disable")) {
83f34724
HMH		 5131 res = video_autosw_set(0);
5132 if (res)
5133 return res;
26217796 5134 } else if (strstarts(cmd, "video_switch")) {
83f34724
HMH		 5135 res = video_outputsw_cycle();
5136 if (res)
5137 return res;
26217796 5138 } else if (strstarts(cmd, "expand_toggle")) {
83f34724
HMH		 5139 res = video_expand_toggle();
5140 if (res)
5141 return res;
1da177e4
LT		 5142 } else
5143 return -EINVAL;
5144 }
5145
5146 if (enable || disable) {
83f34724
HMH		 5147 status = video_outputsw_get();
5148 if (status < 0)
5149 return status;
5150 res = video_outputsw_set((status & ~disable) | enable);
5151 if (res)
5152 return res;
1da177e4
LT		 5153 }
5154
5155 return 0;
5156}
5157
a5763f22
HMH		 5158static struct ibm_struct video_driver_data = {
5159 .name = "video",
5160 .read = video_read,
5161 .write = video_write,
5162 .exit = video_exit,
5163};
5164
d7c1d17d
HMH		 5165#endif /* CONFIG_THINKPAD_ACPI_VIDEO */
5166
bb28f3d5
PR		 5167/*************************************************************************
5168 * Keyboard backlight subdriver
5169 */
5170
c685e20d
HG		 5171static enum led_brightness kbdlight_brightness;
5172static DEFINE_MUTEX(kbdlight_mutex);
5173
bb28f3d5
PR		 5174static int kbdlight_set_level(int level)
5175{
c685e20d
HG		 5176 int ret = 0;
5177
bb28f3d5
PR		 5178 if (!hkey_handle)
5179 return -ENXIO;
5180
c685e20d
HG		 5181 mutex_lock(&kbdlight_mutex);
5182
bb28f3d5 5183 if (!acpi_evalf(hkey_handle, NULL, "MLCS", "dd", level))
c685e20d
HG		 5184 ret = -EIO;
5185 else
5186 kbdlight_brightness = level;
bb28f3d5 5187
c685e20d
HG		 5188 mutex_unlock(&kbdlight_mutex);
5189
5190 return ret;
bb28f3d5
PR		 5191}
5192
5193static int kbdlight_get_level(void)
5194{
5195 int status = 0;
5196
5197 if (!hkey_handle)
5198 return -ENXIO;
5199
5200 if (!acpi_evalf(hkey_handle, &status, "MLCG", "dd", 0))
5201 return -EIO;
5202
5203 if (status < 0)
5204 return status;
5205
5206 return status & 0x3;
5207}
5208
5209static bool kbdlight_is_supported(void)
5210{
5211 int status = 0;
5212
5213 if (!hkey_handle)
5214 return false;
5215
5216 if (!acpi_has_method(hkey_handle, "MLCG")) {
5217 vdbg_printk(TPACPI_DBG_INIT, "kbdlight MLCG is unavailable\n");
5218 return false;
5219 }
5220
5221 if (!acpi_evalf(hkey_handle, &status, "MLCG", "qdd", 0)) {
5222 vdbg_printk(TPACPI_DBG_INIT, "kbdlight MLCG failed\n");
5223 return false;
5224 }
5225
5226 if (status < 0) {
5227 vdbg_printk(TPACPI_DBG_INIT, "kbdlight MLCG err: %d\n", status);
5228 return false;
5229 }
5230
5231 vdbg_printk(TPACPI_DBG_INIT, "kbdlight MLCG returned 0x%x\n", status);
5232 /*
5233 * Guessed test for keyboard backlight:
5234 *
5235 * Machines with backlight keyboard return:
5236 * b010100000010000000XX - ThinkPad X1 Carbon 3rd
5237 * b110100010010000000XX - ThinkPad x230
5238 * b010100000010000000XX - ThinkPad x240
5239 * b010100000010000000XX - ThinkPad W541
5240 * (XX is current backlight level)
5241 *
5242 * Machines without backlight keyboard return:
5243 * b10100001000000000000 - ThinkPad x230
5244 * b10110001000000000000 - ThinkPad E430
5245 * b00000000000000000000 - ThinkPad E450
5246 *
5247 * Candidate BITs for detection test (XOR):
5248 * b01000000001000000000
5249 * ^
5250 */
5251 return status & BIT(9);
5252}
5253
86ec0c2c 5254static int kbdlight_sysfs_set(struct led_classdev *led_cdev,
bb28f3d5
PR		 5255 enum led_brightness brightness)
5256{
86ec0c2c 5257 return kbdlight_set_level(brightness);
bb28f3d5
PR		 5258}
5259
5260static enum led_brightness kbdlight_sysfs_get(struct led_classdev *led_cdev)
5261{
5262 int level;
5263
5264 level = kbdlight_get_level();
5265 if (level < 0)
5266 return 0;
5267
5268 return level;
5269}
5270
5271static struct tpacpi_led_classdev tpacpi_led_kbdlight = {
5272 .led_classdev = {
5273 .name = "tpacpi::kbd_backlight",
5274 .max_brightness = 2,
c685e20d 5275 .flags = LED_BRIGHT_HW_CHANGED,
86ec0c2c 5276 .brightness_set_blocking = &kbdlight_sysfs_set,
bb28f3d5 5277 .brightness_get = &kbdlight_sysfs_get,
bb28f3d5
PR		 5278 }
5279};
5280
5281static int __init kbdlight_init(struct ibm_init_struct *iibm)
5282{
5283 int rc;
5284
5285 vdbg_printk(TPACPI_DBG_INIT, "initializing kbdlight subdriver\n");
5286
5287 TPACPI_ACPIHANDLE_INIT(hkey);
bb28f3d5
PR		 5288
5289 if (!kbdlight_is_supported()) {
5290 tp_features.kbdlight = 0;
5291 vdbg_printk(TPACPI_DBG_INIT, "kbdlight is unsupported\n");
c7e1c782 5292 return -ENODEV;
bb28f3d5
PR		 5293 }
5294
c685e20d 5295 kbdlight_brightness = kbdlight_sysfs_get(NULL);
bb28f3d5
PR		 5296 tp_features.kbdlight = 1;
5297
5298 rc = led_classdev_register(&tpacpi_pdev->dev,
5299 &tpacpi_led_kbdlight.led_classdev);
5300 if (rc < 0) {
5301 tp_features.kbdlight = 0;
5302 return rc;
5303 }
5304
c685e20d
HG		 5305 tpacpi_hotkey_driver_mask_set(hotkey_driver_mask |
5306 TP_ACPI_HKEY_KBD_LIGHT_MASK);
bb28f3d5
PR		 5307 return 0;
5308}
5309
5310static void kbdlight_exit(void)
5311{
41f80046 5312 led_classdev_unregister(&tpacpi_led_kbdlight.led_classdev);
bb28f3d5
PR		 5313}
5314
afcedebc
MTT		 5315static int kbdlight_set_level_and_update(int level)
5316{
5317 int ret;
5318 struct led_classdev *led_cdev;
5319
5320 ret = kbdlight_set_level(level);
5321 led_cdev = &tpacpi_led_kbdlight.led_classdev;
5322
5323 if (ret == 0 && !(led_cdev->flags & LED_SUSPENDED))
5324 led_cdev->brightness = level;
5325
5326 return ret;
5327}
5328
bb28f3d5
PR		 5329static int kbdlight_read(struct seq_file *m)
5330{
5331 int level;
5332
5333 if (!tp_features.kbdlight) {
5334 seq_printf(m, "status:\t\tnot supported\n");
5335 } else {
5336 level = kbdlight_get_level();
5337 if (level < 0)
5338 seq_printf(m, "status:\t\terror %d\n", level);
5339 else
5340 seq_printf(m, "status:\t\t%d\n", level);
5341 seq_printf(m, "commands:\t0, 1, 2\n");
5342 }
5343
5344 return 0;
5345}
5346
5347static int kbdlight_write(char *buf)
5348{
5349 char *cmd;
466f4697 5350 int res, level = -EINVAL;
bb28f3d5
PR		 5351
5352 if (!tp_features.kbdlight)
5353 return -ENODEV;
5354
be51bd45 5355 while ((cmd = strsep(&buf, ","))) {
466f4697
AS		 5356 res = kstrtoint(cmd, 10, &level);
5357 if (res < 0)
5358 return res;
bb28f3d5
PR		 5359 }
5360
466f4697 5361 if (level >= 3 || level < 0)
bb28f3d5
PR		 5362 return -EINVAL;
5363
afcedebc
MTT		 5364 return kbdlight_set_level_and_update(level);
5365}
5366
5367static void kbdlight_suspend(void)
5368{
5369 struct led_classdev *led_cdev;
5370
5371 if (!tp_features.kbdlight)
5372 return;
5373
5374 led_cdev = &tpacpi_led_kbdlight.led_classdev;
5375 led_update_brightness(led_cdev);
5376 led_classdev_suspend(led_cdev);
5377}
5378
5379static void kbdlight_resume(void)
5380{
5381 if (!tp_features.kbdlight)
5382 return;
5383
5384 led_classdev_resume(&tpacpi_led_kbdlight.led_classdev);
bb28f3d5
PR		 5385}
5386
5387static struct ibm_struct kbdlight_driver_data = {
5388 .name = "kbdlight",
5389 .read = kbdlight_read,
5390 .write = kbdlight_write,
afcedebc
MTT		 5391 .suspend = kbdlight_suspend,
5392 .resume = kbdlight_resume,
bb28f3d5
PR		 5393 .exit = kbdlight_exit,
5394};
5395
56b6aeb0
HMH		 5396/*************************************************************************
5397 * Light (thinklight) subdriver
5398 */
1da177e4 5399
e0c7dfe7
HMH		 5400TPACPI_HANDLE(lght, root, "\\LGHT"); /* A21e, A2xm/p, T20-22, X20-21 */
5401TPACPI_HANDLE(ledb, ec, "LEDB"); /* G4x */
56b6aeb0 5402
4fa6811b
HMH		 5403static int light_get_status(void)
5404{
5405 int status = 0;
5406
5407 if (tp_features.light_status) {
5408 if (!acpi_evalf(ec_handle, &status, "KBLT", "d"))
5409 return -EIO;
5410 return (!!status);
5411 }
5412
5413 return -ENXIO;
5414}
5415
5416static int light_set_status(int status)
5417{
5418 int rc;
5419
5420 if (tp_features.light) {
5421 if (cmos_handle) {
5422 rc = acpi_evalf(cmos_handle, NULL, NULL, "vd",
72a979f0 5423 (status) ?
4fa6811b
HMH		 5424 TP_CMOS_THINKLIGHT_ON :
5425 TP_CMOS_THINKLIGHT_OFF);
5426 } else {
5427 rc = acpi_evalf(lght_handle, NULL, NULL, "vd",
72a979f0 5428 (status) ? 1 : 0);
4fa6811b 5429 }
72a979f0 5430 return (rc) ? 0 : -EIO;
4fa6811b
HMH		 5431 }
5432
5433 return -ENXIO;
5434}
5435
86ec0c2c 5436static int light_sysfs_set(struct led_classdev *led_cdev,
e306501d
HMH		 5437 enum led_brightness brightness)
5438{
86ec0c2c
HG		 5439 return light_set_status((brightness != LED_OFF) ?
5440 TPACPI_LED_ON : TPACPI_LED_OFF);
e306501d
HMH		 5441}
5442
5443static enum led_brightness light_sysfs_get(struct led_classdev *led_cdev)
5444{
eebf8201 5445 return (light_get_status() == 1) ? LED_ON : LED_OFF;
e306501d
HMH		 5446}
5447
5448static struct tpacpi_led_classdev tpacpi_led_thinklight = {
5449 .led_classdev = {
5450 .name = "tpacpi::thinklight",
db5e2a4c 5451 .max_brightness = 1,
86ec0c2c 5452 .brightness_set_blocking = &light_sysfs_set,
e306501d
HMH		 5453 .brightness_get = &light_sysfs_get,
5454 }
5455};
5456
a5763f22 5457static int __init light_init(struct ibm_init_struct *iibm)
1da177e4 5458{
9c0a76e1 5459 int rc;
e306501d 5460
fe08bc4b
HMH		 5461 vdbg_printk(TPACPI_DBG_INIT, "initializing light subdriver\n");
5462
e28393c0
HMH		 5463 if (tpacpi_is_ibm()) {
5464 TPACPI_ACPIHANDLE_INIT(ledb);
5465 TPACPI_ACPIHANDLE_INIT(lght);
5466 }
e0c7dfe7 5467 TPACPI_ACPIHANDLE_INIT(cmos);
5fba344c 5468
78f81cc4 5469 /* light not supported on 570, 600e/x, 770e, 770x, G4x, R30, R31 */
d8fd94d9 5470 tp_features.light = (cmos_handle || lght_handle) && !ledb_handle;
78f81cc4 5471
d8fd94d9 5472 if (tp_features.light)
78f81cc4
BD		 5473 /* light status not supported on
5474 570, 600e/x, 770e, 770x, G4x, R30, R31, R32, X20 */
d8fd94d9
HMH		 5475 tp_features.light_status =
5476 acpi_evalf(ec_handle, NULL, "KBLT", "qv");
1da177e4 5477
9c0a76e1
HMH		 5478 vdbg_printk(TPACPI_DBG_INIT, "light is %s, light status is %s\n",
5479 str_supported(tp_features.light),
5480 str_supported(tp_features.light_status));
fe08bc4b 5481
9c0a76e1 5482 if (!tp_features.light)
c7e1c782 5483 return -ENODEV;
9c0a76e1
HMH		 5484
5485 rc = led_classdev_register(&tpacpi_pdev->dev,
5486 &tpacpi_led_thinklight.led_classdev);
e306501d
HMH		 5487
5488 if (rc < 0) {
5489 tp_features.light = 0;
5490 tp_features.light_status = 0;
9c0a76e1
HMH		 5491 } else {
5492 rc = 0;
e306501d 5493 }
9c0a76e1 5494
e306501d
HMH		 5495 return rc;
5496}
5497
5498static void light_exit(void)
5499{
5500 led_classdev_unregister(&tpacpi_led_thinklight.led_classdev);
1da177e4
LT		 5501}
5502
887965e6 5503static int light_read(struct seq_file *m)
1da177e4 5504{
4fa6811b 5505 int status;
1da177e4 5506
d8fd94d9 5507 if (!tp_features.light) {
887965e6 5508 seq_printf(m, "status:\t\tnot supported\n");
d8fd94d9 5509 } else if (!tp_features.light_status) {
887965e6
AD		 5510 seq_printf(m, "status:\t\tunknown\n");
5511 seq_printf(m, "commands:\ton, off\n");
78f81cc4 5512 } else {
4fa6811b
HMH		 5513 status = light_get_status();
5514 if (status < 0)
5515 return status;
664607f5 5516 seq_printf(m, "status:\t\t%s\n", str_on_off(status & BIT(0)));
887965e6 5517 seq_printf(m, "commands:\ton, off\n");
78f81cc4 5518 }
1da177e4 5519
887965e6 5520 return 0;
1da177e4
LT		 5521}
5522
78f81cc4 5523static int light_write(char *buf)
1da177e4 5524{
1da177e4 5525 char *cmd;
4fa6811b 5526 int newstatus = 0;
78f81cc4 5527
d8fd94d9 5528 if (!tp_features.light)
78f81cc4
BD		 5529 return -ENODEV;
5530
be51bd45 5531 while ((cmd = strsep(&buf, ","))) {
26217796 5532 if (strstarts(cmd, "on")) {
4fa6811b 5533 newstatus = 1;
26217796 5534 } else if (strstarts(cmd, "off")) {
4fa6811b 5535 newstatus = 0;
1da177e4
LT		 5536 } else
5537 return -EINVAL;
1da177e4
LT		 5538 }
5539
4fa6811b 5540 return light_set_status(newstatus);
1da177e4
LT		 5541}
5542
a5763f22
HMH		 5543static struct ibm_struct light_driver_data = {
5544 .name = "light",
5545 .read = light_read,
5546 .write = light_write,
e306501d 5547 .exit = light_exit,
a5763f22
HMH		 5548};
5549
56b6aeb0
HMH		 5550/*************************************************************************
5551 * CMOS subdriver
5552 */
5553
b616004c
HMH		 5554/* sysfs cmos_command -------------------------------------------------- */
5555static ssize_t cmos_command_store(struct device *dev,
5556 struct device_attribute *attr,
5557 const char *buf, size_t count)
5558{
5559 unsigned long cmos_cmd;
5560 int res;
5561
5562 if (parse_strtoul(buf, 21, &cmos_cmd))
5563 return -EINVAL;
5564
5565 res = issue_thinkpad_cmos_command(cmos_cmd);
72a979f0 5566 return (res) ? res : count;
b616004c
HMH		 5567}
5568
b4dd04ac 5569static DEVICE_ATTR_WO(cmos_command);
b616004c 5570
79f960e2
LB		 5571static struct attribute *cmos_attributes[] = {
5572 &dev_attr_cmos_command.attr,
5573 NULL
5574};
5575
5576static umode_t cmos_attr_is_visible(struct kobject *kobj,
5577 struct attribute *attr, int n)
5578{
5579 return cmos_handle ? attr->mode : 0;
5580}
5581
5582static const struct attribute_group cmos_attr_group = {
5583 .is_visible = cmos_attr_is_visible,
5584 .attrs = cmos_attributes,
5585};
5586
b616004c
HMH		 5587/* --------------------------------------------------------------------- */
5588
a5763f22 5589static int __init cmos_init(struct ibm_init_struct *iibm)
5fba344c 5590{
fe08bc4b 5591 vdbg_printk(TPACPI_DBG_INIT,
79f960e2 5592 "initializing cmos commands subdriver\n");
fe08bc4b 5593
e0c7dfe7 5594 TPACPI_ACPIHANDLE_INIT(cmos);
5fba344c 5595
fe08bc4b 5596 vdbg_printk(TPACPI_DBG_INIT, "cmos commands are %s\n",
79f960e2 5597 str_supported(cmos_handle != NULL));
5fba344c 5598
c7e1c782 5599 return cmos_handle ? 0 : -ENODEV;
b616004c
HMH		 5600}
5601
887965e6 5602static int cmos_read(struct seq_file *m)
1da177e4 5603{
78f81cc4
BD		 5604 /* cmos not supported on 570, 600e/x, 770e, 770x, A21e, A2xm/p,
5605 R30, R31, T20-22, X20-21 */
1da177e4 5606 if (!cmos_handle)
887965e6 5607 seq_printf(m, "status:\t\tnot supported\n");
1da177e4 5608 else {
887965e6
AD		 5609 seq_printf(m, "status:\t\tsupported\n");
5610 seq_printf(m, "commands:\t<cmd> (<cmd> is 0-21)\n");
1da177e4
LT		 5611 }
5612
887965e6 5613 return 0;
1da177e4
LT		 5614}
5615
78f81cc4 5616static int cmos_write(char *buf)
1da177e4
LT		 5617{
5618 char *cmd;
c9bea99c 5619 int cmos_cmd, res;
1da177e4 5620
be51bd45 5621 while ((cmd = strsep(&buf, ","))) {
78f81cc4
BD		 5622 if (sscanf(cmd, "%u", &cmos_cmd) == 1 &&
5623 cmos_cmd >= 0 && cmos_cmd <= 21) {
1da177e4
LT		 5624 /* cmos_cmd set */
5625 } else
5626 return -EINVAL;
5627
c9bea99c
HMH		 5628 res = issue_thinkpad_cmos_command(cmos_cmd);
5629 if (res)
5630 return res;
1da177e4
LT		 5631 }
5632
5633 return 0;
78f81cc4
BD		 5634}
5635
a5763f22
HMH		 5636static struct ibm_struct cmos_driver_data = {
5637 .name = "cmos",
5638 .read = cmos_read,
5639 .write = cmos_write,
5640};
56b6aeb0
HMH		 5641
5642/*************************************************************************
5643 * LED subdriver
5644 */
5645
f74a27d4
HMH		 5646enum led_access_mode {
5647 TPACPI_LED_NONE = 0,
5648 TPACPI_LED_570, /* 570 */
5649 TPACPI_LED_OLD, /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20-21 */
5650 TPACPI_LED_NEW, /* all others */
5651};
5652
5653enum { /* For TPACPI_LED_OLD */
5654 TPACPI_LED_EC_HLCL = 0x0c, /* EC reg to get led to power on */
5655 TPACPI_LED_EC_HLBL = 0x0d, /* EC reg to blink a lit led */
5656 TPACPI_LED_EC_HLMS = 0x0e, /* EC reg to select led to command */
5657};
5658
9a8e1738 5659static enum led_access_mode led_supported;
78f81cc4 5660
2cbb5c8f 5661static acpi_handle led_handle;
56b6aeb0 5662
f21179a4 5663#define TPACPI_LED_NUMLEDS 16
af116101
HMH		 5664static struct tpacpi_led_classdev *tpacpi_leds;
5665static enum led_status_t tpacpi_led_state_cache[TPACPI_LED_NUMLEDS];
e3aa51fe 5666static const char * const tpacpi_led_names[TPACPI_LED_NUMLEDS] = {
af116101
HMH		 5667 /* there's a limit of 19 chars + NULL before 2.6.26 */
5668 "tpacpi::power",
5669 "tpacpi:orange:batt",
5670 "tpacpi:green:batt",
5671 "tpacpi::dock_active",
5672 "tpacpi::bay_active",
5673 "tpacpi::dock_batt",
5674 "tpacpi::unknown_led",
5675 "tpacpi::standby",
f21179a4
HMH		 5676 "tpacpi::dock_status1",
5677 "tpacpi::dock_status2",
be892e95 5678 "tpacpi::lid_logo_dot",
f21179a4
HMH		 5679 "tpacpi::unknown_led3",
5680 "tpacpi::thinkvantage",
af116101 5681};
be892e95 5682#define TPACPI_SAFE_LEDS 0x1481U
a4d5effc
HMH		 5683
5684static inline bool tpacpi_is_led_restricted(const unsigned int led)
5685{
5686#ifdef CONFIG_THINKPAD_ACPI_UNSAFE_LEDS
5687 return false;
5688#else
f21179a4 5689 return (1U & (TPACPI_SAFE_LEDS >> led)) == 0;
a4d5effc
HMH		 5690#endif
5691}
af116101 5692
24e45bbe 5693static int led_get_status(const unsigned int led)
4fa6811b
HMH		 5694{
5695 int status;
af116101 5696 enum led_status_t led_s;
4fa6811b
HMH		 5697
5698 switch (led_supported) {
5699 case TPACPI_LED_570:
5700 if (!acpi_evalf(ec_handle,
5701 &status, "GLED", "dd", 1 << led))
5702 return -EIO;
72a979f0 5703 led_s = (status == 0) ?
4fa6811b 5704 TPACPI_LED_OFF :
72a979f0 5705 ((status == 1) ?
4fa6811b
HMH		 5706 TPACPI_LED_ON :
5707 TPACPI_LED_BLINK);
af116101
HMH		 5708 tpacpi_led_state_cache[led] = led_s;
5709 return led_s;
4fa6811b
HMH		 5710 default:
5711 return -ENXIO;
5712 }
5713
5714 /* not reached */
5715}
5716
24e45bbe
HMH		 5717static int led_set_status(const unsigned int led,
5718 const enum led_status_t ledstatus)
4fa6811b
HMH		 5719{
5720 /* off, on, blink. Index is led_status_t */
24e45bbe
HMH		 5721 static const unsigned int led_sled_arg1[] = { 0, 1, 3 };
5722 static const unsigned int led_led_arg1[] = { 0, 0x80, 0xc0 };
4fa6811b
HMH		 5723
5724 int rc = 0;
5725
5726 switch (led_supported) {
5727 case TPACPI_LED_570:
24e45bbe 5728 /* 570 */
a4d5effc 5729 if (unlikely(led > 7))
24e45bbe 5730 return -EINVAL;
a4d5effc
HMH		 5731 if (unlikely(tpacpi_is_led_restricted(led)))
5732 return -EPERM;
24e45bbe
HMH		 5733 if (!acpi_evalf(led_handle, NULL, NULL, "vdd",
5734 (1 << led), led_sled_arg1[ledstatus]))
aac3311c 5735 return -EIO;
24e45bbe 5736 break;
4fa6811b 5737 case TPACPI_LED_OLD:
24e45bbe 5738 /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20 */
a4d5effc 5739 if (unlikely(led > 7))
24e45bbe 5740 return -EINVAL;
a4d5effc
HMH		 5741 if (unlikely(tpacpi_is_led_restricted(led)))
5742 return -EPERM;
24e45bbe
HMH		 5743 rc = ec_write(TPACPI_LED_EC_HLMS, (1 << led));
5744 if (rc >= 0)
5745 rc = ec_write(TPACPI_LED_EC_HLBL,
5746 (ledstatus == TPACPI_LED_BLINK) << led);
5747 if (rc >= 0)
5748 rc = ec_write(TPACPI_LED_EC_HLCL,
5749 (ledstatus != TPACPI_LED_OFF) << led);
5750 break;
4fa6811b 5751 case TPACPI_LED_NEW:
24e45bbe 5752 /* all others */
a4d5effc
HMH		 5753 if (unlikely(led >= TPACPI_LED_NUMLEDS))
5754 return -EINVAL;
5755 if (unlikely(tpacpi_is_led_restricted(led)))
5756 return -EPERM;
24e45bbe
HMH		 5757 if (!acpi_evalf(led_handle, NULL, NULL, "vdd",
5758 led, led_led_arg1[ledstatus]))
aac3311c 5759 return -EIO;
24e45bbe 5760 break;
4fa6811b 5761 default:
aac3311c 5762 return -ENXIO;
4fa6811b
HMH		 5763 }
5764
af116101
HMH		 5765 if (!rc)
5766 tpacpi_led_state_cache[led] = ledstatus;
5767
5768 return rc;
5769}
5770
86ec0c2c 5771static int led_sysfs_set(struct led_classdev *led_cdev,
af116101
HMH		 5772 enum led_brightness brightness)
5773{
5774 struct tpacpi_led_classdev *data = container_of(led_cdev,
5775 struct tpacpi_led_classdev, led_classdev);
86ec0c2c 5776 enum led_status_t new_state;
af116101 5777
75bd3bf2 5778 if (brightness == LED_OFF)
86ec0c2c 5779 new_state = TPACPI_LED_OFF;
75bd3bf2 5780 else if (tpacpi_led_state_cache[data->led] != TPACPI_LED_BLINK)
86ec0c2c 5781 new_state = TPACPI_LED_ON;
75bd3bf2 5782 else
86ec0c2c 5783 new_state = TPACPI_LED_BLINK;
75bd3bf2 5784
86ec0c2c 5785 return led_set_status(data->led, new_state);
af116101
HMH		 5786}
5787
5788static int led_sysfs_blink_set(struct led_classdev *led_cdev,
5789 unsigned long *delay_on, unsigned long *delay_off)
5790{
5791 struct tpacpi_led_classdev *data = container_of(led_cdev,
5792 struct tpacpi_led_classdev, led_classdev);
5793
5794 /* Can we choose the flash rate? */
5795 if (*delay_on == 0 && *delay_off == 0) {
5796 /* yes. set them to the hardware blink rate (1 Hz) */
5797 *delay_on = 500; /* ms */
5798 *delay_off = 500; /* ms */
5799 } else if ((*delay_on != 500) || (*delay_off != 500))
5800 return -EINVAL;
5801
86ec0c2c 5802 return led_set_status(data->led, TPACPI_LED_BLINK);
af116101
HMH		 5803}
5804
5805static enum led_brightness led_sysfs_get(struct led_classdev *led_cdev)
5806{
5807 int rc;
5808
5809 struct tpacpi_led_classdev *data = container_of(led_cdev,
5810 struct tpacpi_led_classdev, led_classdev);
5811
5812 rc = led_get_status(data->led);
5813
5814 if (rc == TPACPI_LED_OFF || rc < 0)
5815 rc = LED_OFF; /* no error handling in led class :( */
5816 else
5817 rc = LED_FULL;
5818
4fa6811b
HMH		 5819 return rc;
5820}
5821
af116101
HMH		 5822static void led_exit(void)
5823{
5824 unsigned int i;
5825
41f80046
AS		 5826 for (i = 0; i < TPACPI_LED_NUMLEDS; i++)
5827 led_classdev_unregister(&tpacpi_leds[i].led_classdev);
af116101
HMH		 5828
5829 kfree(tpacpi_leds);
af116101
HMH		 5830}
5831
a4d5effc
HMH		 5832static int __init tpacpi_init_led(unsigned int led)
5833{
f21179a4
HMH		 5834 /* LEDs with no name don't get registered */
5835 if (!tpacpi_led_names[led])
5836 return 0;
5837
86ec0c2c 5838 tpacpi_leds[led].led_classdev.brightness_set_blocking = &led_sysfs_set;
a4d5effc
HMH		 5839 tpacpi_leds[led].led_classdev.blink_set = &led_sysfs_blink_set;
5840 if (led_supported == TPACPI_LED_570)
41f80046 5841 tpacpi_leds[led].led_classdev.brightness_get = &led_sysfs_get;
a4d5effc
HMH		 5842
5843 tpacpi_leds[led].led_classdev.name = tpacpi_led_names[led];
e518704d 5844 tpacpi_leds[led].led_classdev.flags = LED_RETAIN_AT_SHUTDOWN;
41f80046 5845 tpacpi_leds[led].led = led;
a4d5effc 5846
41f80046 5847 return led_classdev_register(&tpacpi_pdev->dev, &tpacpi_leds[led].led_classdev);
a4d5effc
HMH		 5848}
5849
f21179a4
HMH		 5850static const struct tpacpi_quirk led_useful_qtable[] __initconst = {
5851 TPACPI_Q_IBM('1', 'E', 0x009f), /* A30 */
5852 TPACPI_Q_IBM('1', 'N', 0x009f), /* A31 */
5853 TPACPI_Q_IBM('1', 'G', 0x009f), /* A31 */
5854
5855 TPACPI_Q_IBM('1', 'I', 0x0097), /* T30 */
5856 TPACPI_Q_IBM('1', 'R', 0x0097), /* T40, T41, T42, R50, R51 */
5857 TPACPI_Q_IBM('7', '0', 0x0097), /* T43, R52 */
5858 TPACPI_Q_IBM('1', 'Y', 0x0097), /* T43 */
5859 TPACPI_Q_IBM('1', 'W', 0x0097), /* R50e */
5860 TPACPI_Q_IBM('1', 'V', 0x0097), /* R51 */
5861 TPACPI_Q_IBM('7', '8', 0x0097), /* R51e */
5862 TPACPI_Q_IBM('7', '6', 0x0097), /* R52 */
5863
5864 TPACPI_Q_IBM('1', 'K', 0x00bf), /* X30 */
5865 TPACPI_Q_IBM('1', 'Q', 0x00bf), /* X31, X32 */
5866 TPACPI_Q_IBM('1', 'U', 0x00bf), /* X40 */
5867 TPACPI_Q_IBM('7', '4', 0x00bf), /* X41 */
5868 TPACPI_Q_IBM('7', '5', 0x00bf), /* X41t */
5869
5870 TPACPI_Q_IBM('7', '9', 0x1f97), /* T60 (1) */
5871 TPACPI_Q_IBM('7', '7', 0x1f97), /* Z60* (1) */
5872 TPACPI_Q_IBM('7', 'F', 0x1f97), /* Z61* (1) */
5873 TPACPI_Q_IBM('7', 'B', 0x1fb7), /* X60 (1) */
5874
5875 /* (1) - may have excess leds enabled on MSB */
5876
5877 /* Defaults (order matters, keep last, don't reorder!) */
5878 { /* Lenovo */
5879 .vendor = PCI_VENDOR_ID_LENOVO,
5880 .bios = TPACPI_MATCH_ANY, .ec = TPACPI_MATCH_ANY,
5881 .quirks = 0x1fffU,
5882 },
5883 { /* IBM ThinkPads with no EC version string */
5884 .vendor = PCI_VENDOR_ID_IBM,
5885 .bios = TPACPI_MATCH_ANY, .ec = TPACPI_MATCH_UNKNOWN,
5886 .quirks = 0x00ffU,
5887 },
5888 { /* IBM ThinkPads with EC version string */
5889 .vendor = PCI_VENDOR_ID_IBM,
5890 .bios = TPACPI_MATCH_ANY, .ec = TPACPI_MATCH_ANY,
5891 .quirks = 0x00bfU,
5892 },
5893};
5894
2cbb5c8f
HMH		 5895static enum led_access_mode __init led_init_detect_mode(void)
5896{
5897 acpi_status status;
5898
5899 if (tpacpi_is_ibm()) {
5900 /* 570 */
5901 status = acpi_get_handle(ec_handle, "SLED", &led_handle);
5902 if (ACPI_SUCCESS(status))
5903 return TPACPI_LED_570;
5904
5905 /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20-21 */
5906 status = acpi_get_handle(ec_handle, "SYSL", &led_handle);
5907 if (ACPI_SUCCESS(status))
5908 return TPACPI_LED_OLD;
5909 }
5910
5911 /* most others */
5912 status = acpi_get_handle(ec_handle, "LED", &led_handle);
5913 if (ACPI_SUCCESS(status))
5914 return TPACPI_LED_NEW;
5915
5916 /* R30, R31, and unknown firmwares */
5917 led_handle = NULL;
5918 return TPACPI_LED_NONE;
5919}
5920
a5763f22 5921static int __init led_init(struct ibm_init_struct *iibm)
78f81cc4 5922{
af116101
HMH		 5923 unsigned int i;
5924 int rc;
f21179a4 5925 unsigned long useful_leds;
af116101 5926
fe08bc4b
HMH		 5927 vdbg_printk(TPACPI_DBG_INIT, "initializing LED subdriver\n");
5928
2cbb5c8f 5929 led_supported = led_init_detect_mode();
78f81cc4 5930
fcb44e12
AL		 5931 if (led_supported != TPACPI_LED_NONE) {
5932 useful_leds = tpacpi_check_quirks(led_useful_qtable,
5933 ARRAY_SIZE(led_useful_qtable));
5934
5935 if (!useful_leds) {
5936 led_handle = NULL;
5937 led_supported = TPACPI_LED_NONE;
5938 }
5939 }
5940
fe08bc4b
HMH		 5941 vdbg_printk(TPACPI_DBG_INIT, "LED commands are %s, mode %d\n",
5942 str_supported(led_supported), led_supported);
5943
f21179a4 5944 if (led_supported == TPACPI_LED_NONE)
c7e1c782 5945 return -ENODEV;
f21179a4 5946
6396bb22 5947 tpacpi_leds = kcalloc(TPACPI_LED_NUMLEDS, sizeof(*tpacpi_leds),
af116101
HMH		 5948 GFP_KERNEL);
5949 if (!tpacpi_leds) {
0978e012 5950 pr_err("Out of memory for LED data\n");
af116101
HMH		 5951 return -ENOMEM;
5952 }
5953
5954 for (i = 0; i < TPACPI_LED_NUMLEDS; i++) {
edf2d778
AL		 5955 tpacpi_leds[i].led = -1;
5956
41f80046 5957 if (!tpacpi_is_led_restricted(i) && test_bit(i, &useful_leds)) {
a4d5effc
HMH		 5958 rc = tpacpi_init_led(i);
5959 if (rc < 0) {
5960 led_exit();
5961 return rc;
5962 }
af116101
HMH		 5963 }
5964 }
5965
a4d5effc 5966#ifdef CONFIG_THINKPAD_ACPI_UNSAFE_LEDS
5cac62ac 5967 pr_notice("warning: userspace override of important firmware LEDs is enabled\n");
a4d5effc 5968#endif
f21179a4 5969 return 0;
78f81cc4
BD		 5970}
5971
664607f5 5972#define str_led_status(s) ((s) >= TPACPI_LED_BLINK ? "blinking" : str_on_off(s))
78f81cc4 5973
887965e6 5974static int led_read(struct seq_file *m)
1da177e4 5975{
78f81cc4 5976 if (!led_supported) {
887965e6
AD		 5977 seq_printf(m, "status:\t\tnot supported\n");
5978 return 0;
78f81cc4 5979 }
887965e6 5980 seq_printf(m, "status:\t\tsupported\n");
78f81cc4 5981
efa27145 5982 if (led_supported == TPACPI_LED_570) {
78f81cc4
BD		 5983 /* 570 */
5984 int i, status;
5985 for (i = 0; i < 8; i++) {
4fa6811b
HMH		 5986 status = led_get_status(i);
5987 if (status < 0)
78f81cc4 5988 return -EIO;
664607f5 5989 seq_printf(m, "%d:\t\t%s\n", i, str_led_status(status));
78f81cc4
BD		 5990 }
5991 }
5992
5cac62ac 5993 seq_printf(m, "commands:\t<led> on, <led> off, <led> blink (<led> is 0-15)\n");
1da177e4 5994
887965e6 5995 return 0;
1da177e4
LT		 5996}
5997
78f81cc4 5998static int led_write(char *buf)
1da177e4
LT		 5999{
6000 char *cmd;
4fa6811b
HMH		 6001 int led, rc;
6002 enum led_status_t s;
78f81cc4
BD		 6003
6004 if (!led_supported)
6005 return -ENODEV;
1da177e4 6006
be51bd45 6007 while ((cmd = strsep(&buf, ","))) {
edf2d778 6008 if (sscanf(cmd, "%d", &led) != 1)
1da177e4
LT		 6009 return -EINVAL;
6010
41f80046
AS		 6011 if (led < 0 || led > (TPACPI_LED_NUMLEDS - 1))
6012 return -ENODEV;
6013
6014 if (tpacpi_leds[led].led < 0)
edf2d778
AL		 6015 return -ENODEV;
6016
78f81cc4 6017 if (strstr(cmd, "off")) {
4fa6811b 6018 s = TPACPI_LED_OFF;
1da177e4 6019 } else if (strstr(cmd, "on")) {
4fa6811b 6020 s = TPACPI_LED_ON;
78f81cc4 6021 } else if (strstr(cmd, "blink")) {
4fa6811b 6022 s = TPACPI_LED_BLINK;
78f81cc4 6023 } else {
4fa6811b 6024 return -EINVAL;
78f81cc4 6025 }
4fa6811b
HMH		 6026
6027 rc = led_set_status(led, s);
6028 if (rc < 0)
6029 return rc;
78f81cc4
BD		 6030 }
6031
6032 return 0;
6033}
6034
a5763f22
HMH		 6035static struct ibm_struct led_driver_data = {
6036 .name = "led",
6037 .read = led_read,
6038 .write = led_write,
af116101 6039 .exit = led_exit,
a5763f22
HMH		 6040};
6041
56b6aeb0
HMH		 6042/*************************************************************************
6043 * Beep subdriver
6044 */
6045
e0c7dfe7 6046TPACPI_HANDLE(beep, ec, "BEEP"); /* all except R30, R31 */
56b6aeb0 6047
60201732
HMH		 6048#define TPACPI_BEEP_Q1 0x0001
6049
6050static const struct tpacpi_quirk beep_quirk_table[] __initconst = {
6051 TPACPI_Q_IBM('I', 'M', TPACPI_BEEP_Q1), /* 570 */
6052 TPACPI_Q_IBM('I', 'U', TPACPI_BEEP_Q1), /* 570E - unverified */
6053};
6054
a5763f22 6055static int __init beep_init(struct ibm_init_struct *iibm)
5fba344c 6056{
60201732
HMH		 6057 unsigned long quirks;
6058
fe08bc4b
HMH		 6059 vdbg_printk(TPACPI_DBG_INIT, "initializing beep subdriver\n");
6060
e0c7dfe7 6061 TPACPI_ACPIHANDLE_INIT(beep);
5fba344c 6062
fe08bc4b
HMH		 6063 vdbg_printk(TPACPI_DBG_INIT, "beep is %s\n",
6064 str_supported(beep_handle != NULL));
6065
60201732
HMH		 6066 quirks = tpacpi_check_quirks(beep_quirk_table,
6067 ARRAY_SIZE(beep_quirk_table));
6068
6069 tp_features.beep_needs_two_args = !!(quirks & TPACPI_BEEP_Q1);
6070
c7e1c782 6071 return (beep_handle) ? 0 : -ENODEV;
5fba344c
HMH		 6072}
6073
887965e6 6074static int beep_read(struct seq_file *m)
78f81cc4 6075{
78f81cc4 6076 if (!beep_handle)
887965e6 6077 seq_printf(m, "status:\t\tnot supported\n");
78f81cc4 6078 else {
887965e6
AD		 6079 seq_printf(m, "status:\t\tsupported\n");
6080 seq_printf(m, "commands:\t<cmd> (<cmd> is 0-17)\n");
78f81cc4
BD		 6081 }
6082
887965e6 6083 return 0;
78f81cc4
BD		 6084}
6085
6086static int beep_write(char *buf)
6087{
6088 char *cmd;
6089 int beep_cmd;
6090
6091 if (!beep_handle)
6092 return -ENODEV;
6093
be51bd45 6094 while ((cmd = strsep(&buf, ","))) {
78f81cc4
BD		 6095 if (sscanf(cmd, "%u", &beep_cmd) == 1 &&
6096 beep_cmd >= 0 && beep_cmd <= 17) {
6097 /* beep_cmd set */
6098 } else
6099 return -EINVAL;
60201732
HMH		 6100 if (tp_features.beep_needs_two_args) {
6101 if (!acpi_evalf(beep_handle, NULL, NULL, "vdd",
6102 beep_cmd, 0))
6103 return -EIO;
6104 } else {
6105 if (!acpi_evalf(beep_handle, NULL, NULL, "vd",
6106 beep_cmd))
6107 return -EIO;
6108 }
78f81cc4
BD		 6109 }
6110
6111 return 0;
6112}
6113
a5763f22
HMH		 6114static struct ibm_struct beep_driver_data = {
6115 .name = "beep",
6116 .read = beep_read,
6117 .write = beep_write,
6118};
6119
56b6aeb0
HMH		 6120/*************************************************************************
6121 * Thermal subdriver
6122 */
78f81cc4 6123
f74a27d4
HMH		 6124enum thermal_access_mode {
6125 TPACPI_THERMAL_NONE = 0, /* No thermal support */
6126 TPACPI_THERMAL_ACPI_TMP07, /* Use ACPI TMP0-7 */
6127 TPACPI_THERMAL_ACPI_UPDT, /* Use ACPI TMP0-7 with UPDT */
6128 TPACPI_THERMAL_TPEC_8, /* Use ACPI EC regs, 8 sensors */
6129 TPACPI_THERMAL_TPEC_16, /* Use ACPI EC regs, 16 sensors */
6130};
6131
6132enum { /* TPACPI_THERMAL_TPEC_* */
6133 TP_EC_THERMAL_TMP0 = 0x78, /* ACPI EC regs TMP 0..7 */
6134 TP_EC_THERMAL_TMP8 = 0xC0, /* ACPI EC regs TMP 8..15 */
6759e18e 6135 TP_EC_FUNCREV = 0xEF, /* ACPI EC Functional revision */
f74a27d4 6136 TP_EC_THERMAL_TMP_NA = -128, /* ACPI EC sensor not available */
9ebd9e83
HMH		 6137
6138 TPACPI_THERMAL_SENSOR_NA = -128000, /* Sensor not available */
f74a27d4
HMH		 6139};
6140
9ebd9e83 6141
f74a27d4
HMH		 6142#define TPACPI_MAX_THERMAL_SENSORS 16 /* Max thermal sensors supported */
6143struct ibm_thermal_sensors_struct {
6144 s32 temp[TPACPI_MAX_THERMAL_SENSORS];
6145};
6146
a26f878a 6147static enum thermal_access_mode thermal_read_mode;
00cc4263 6148static bool thermal_use_labels;
78f81cc4 6149
b21a15f6
HMH		 6150/* idx is zero-based */
6151static int thermal_get_sensor(int idx, s32 *value)
6152{
6153 int t;
6154 s8 tmp;
6155 char tmpi[5];
6156
6157 t = TP_EC_THERMAL_TMP0;
6158
6159 switch (thermal_read_mode) {
6160#if TPACPI_MAX_THERMAL_SENSORS >= 16
6161 case TPACPI_THERMAL_TPEC_16:
6162 if (idx >= 8 && idx <= 15) {
6163 t = TP_EC_THERMAL_TMP8;
6164 idx -= 8;
6165 }
b21a15f6 6166#endif
df561f66 6167 fallthrough;
b21a15f6
HMH		 6168 case TPACPI_THERMAL_TPEC_8:
6169 if (idx <= 7) {
6170 if (!acpi_ec_read(t + idx, &tmp))
6171 return -EIO;
6172 *value = tmp * 1000;
6173 return 0;
6174 }
6175 break;
6176
6177 case TPACPI_THERMAL_ACPI_UPDT:
6178 if (idx <= 7) {
6179 snprintf(tmpi, sizeof(tmpi), "TMP%c", '0' + idx);
6180 if (!acpi_evalf(ec_handle, NULL, "UPDT", "v"))
6181 return -EIO;
6182 if (!acpi_evalf(ec_handle, &t, tmpi, "d"))
6183 return -EIO;
6184 *value = (t - 2732) * 100;
6185 return 0;
6186 }
6187 break;
6188
6189 case TPACPI_THERMAL_ACPI_TMP07:
6190 if (idx <= 7) {
6191 snprintf(tmpi, sizeof(tmpi), "TMP%c", '0' + idx);
6192 if (!acpi_evalf(ec_handle, &t, tmpi, "d"))
6193 return -EIO;
6194 if (t > 127 || t < -127)
6195 t = TP_EC_THERMAL_TMP_NA;
6196 *value = t * 1000;
6197 return 0;
6198 }
6199 break;
6200
6201 case TPACPI_THERMAL_NONE:
6202 default:
6203 return -ENOSYS;
6204 }
6205
6206 return -EINVAL;
6207}
6208
6209static int thermal_get_sensors(struct ibm_thermal_sensors_struct *s)
6210{
6211 int res, i;
6212 int n;
6213
6214 n = 8;
6215 i = 0;
6216
6217 if (!s)
6218 return -EINVAL;
6219
6220 if (thermal_read_mode == TPACPI_THERMAL_TPEC_16)
6221 n = 16;
6222
35ff8b9f 6223 for (i = 0 ; i < n; i++) {
b21a15f6
HMH		 6224 res = thermal_get_sensor(i, &s->temp[i]);
6225 if (res)
6226 return res;
6227 }
6228
6229 return n;
6230}
f74a27d4 6231
9ebd9e83
HMH		 6232static void thermal_dump_all_sensors(void)
6233{
6234 int n, i;
6235 struct ibm_thermal_sensors_struct t;
6236
6237 n = thermal_get_sensors(&t);
6238 if (n <= 0)
6239 return;
6240
0978e012 6241 pr_notice("temperatures (Celsius):");
9ebd9e83
HMH		 6242
6243 for (i = 0; i < n; i++) {
6244 if (t.temp[i] != TPACPI_THERMAL_SENSOR_NA)
0978e012 6245 pr_cont(" %d", (int)(t.temp[i] / 1000));
9ebd9e83 6246 else
0978e012 6247 pr_cont(" N/A");
9ebd9e83
HMH		 6248 }
6249
0978e012 6250 pr_cont("\n");
9ebd9e83
HMH		 6251}
6252
2c37aa4e
HMH		 6253/* sysfs temp##_input -------------------------------------------------- */
6254
6255static ssize_t thermal_temp_input_show(struct device *dev,
6256 struct device_attribute *attr,
6257 char *buf)
6258{
6259 struct sensor_device_attribute *sensor_attr =
6260 to_sensor_dev_attr(attr);
6261 int idx = sensor_attr->index;
6262 s32 value;
6263 int res;
6264
6265 res = thermal_get_sensor(idx, &value);
6266 if (res)
6267 return res;
9ebd9e83 6268 if (value == TPACPI_THERMAL_SENSOR_NA)
2c37aa4e
HMH		 6269 return -ENXIO;
6270
33ce79be 6271 return sysfs_emit(buf, "%d\n", value);
2c37aa4e
HMH		 6272}
6273
6274#define THERMAL_SENSOR_ATTR_TEMP(_idxA, _idxB) \
35ff8b9f
HMH		 6275 SENSOR_ATTR(temp##_idxA##_input, S_IRUGO, \
6276 thermal_temp_input_show, NULL, _idxB)
2c37aa4e
HMH		 6277
6278static struct sensor_device_attribute sensor_dev_attr_thermal_temp_input[] = {
6279 THERMAL_SENSOR_ATTR_TEMP(1, 0),
6280 THERMAL_SENSOR_ATTR_TEMP(2, 1),
6281 THERMAL_SENSOR_ATTR_TEMP(3, 2),
6282 THERMAL_SENSOR_ATTR_TEMP(4, 3),
6283 THERMAL_SENSOR_ATTR_TEMP(5, 4),
6284 THERMAL_SENSOR_ATTR_TEMP(6, 5),
6285 THERMAL_SENSOR_ATTR_TEMP(7, 6),
6286 THERMAL_SENSOR_ATTR_TEMP(8, 7),
6287 THERMAL_SENSOR_ATTR_TEMP(9, 8),
6288 THERMAL_SENSOR_ATTR_TEMP(10, 9),
6289 THERMAL_SENSOR_ATTR_TEMP(11, 10),
6290 THERMAL_SENSOR_ATTR_TEMP(12, 11),
6291 THERMAL_SENSOR_ATTR_TEMP(13, 12),
6292 THERMAL_SENSOR_ATTR_TEMP(14, 13),
6293 THERMAL_SENSOR_ATTR_TEMP(15, 14),
6294 THERMAL_SENSOR_ATTR_TEMP(16, 15),
6295};
6296
6297#define THERMAL_ATTRS(X) \
6298 &sensor_dev_attr_thermal_temp_input[X].dev_attr.attr
6299
6300static struct attribute *thermal_temp_input_attr[] = {
2c37aa4e
HMH		 6301 THERMAL_ATTRS(0),
6302 THERMAL_ATTRS(1),
6303 THERMAL_ATTRS(2),
6304 THERMAL_ATTRS(3),
6305 THERMAL_ATTRS(4),
6306 THERMAL_ATTRS(5),
6307 THERMAL_ATTRS(6),
6308 THERMAL_ATTRS(7),
3a0abea6
HG		 6309 THERMAL_ATTRS(8),
6310 THERMAL_ATTRS(9),
6311 THERMAL_ATTRS(10),
6312 THERMAL_ATTRS(11),
6313 THERMAL_ATTRS(12),
6314 THERMAL_ATTRS(13),
6315 THERMAL_ATTRS(14),
6316 THERMAL_ATTRS(15),
2c37aa4e
HMH		 6317 NULL
6318};
6319
79f960e2
LB		 6320static umode_t thermal_attr_is_visible(struct kobject *kobj,
6321 struct attribute *attr, int n)
6322{
6323 if (thermal_read_mode == TPACPI_THERMAL_NONE)
6324 return 0;
2c37aa4e 6325
79f960e2
LB		 6326 if (attr == THERMAL_ATTRS(8) || attr == THERMAL_ATTRS(9) ||
6327 attr == THERMAL_ATTRS(10) || attr == THERMAL_ATTRS(11) ||
6328 attr == THERMAL_ATTRS(12) || attr == THERMAL_ATTRS(13) ||
6329 attr == THERMAL_ATTRS(14) || attr == THERMAL_ATTRS(15)) {
6330 if (thermal_read_mode != TPACPI_THERMAL_TPEC_16)
6331 return 0;
6332 }
6333
6334 return attr->mode;
6335}
2c37aa4e 6336
79f960e2
LB		 6337static const struct attribute_group thermal_attr_group = {
6338 .is_visible = thermal_attr_is_visible,
6339 .attrs = thermal_temp_input_attr,
2c37aa4e
HMH		 6340};
6341
6342#undef THERMAL_SENSOR_ATTR_TEMP
6343#undef THERMAL_ATTRS
6344
00cc4263
HG		 6345static ssize_t temp1_label_show(struct device *dev, struct device_attribute *attr, char *buf)
6346{
6347 return sysfs_emit(buf, "CPU\n");
6348}
6349static DEVICE_ATTR_RO(temp1_label);
6350
6351static ssize_t temp2_label_show(struct device *dev, struct device_attribute *attr, char *buf)
6352{
6353 return sysfs_emit(buf, "GPU\n");
6354}
6355static DEVICE_ATTR_RO(temp2_label);
6356
6357static struct attribute *temp_label_attributes[] = {
6358 &dev_attr_temp1_label.attr,
6359 &dev_attr_temp2_label.attr,
6360 NULL
6361};
6362
79f960e2
LB		 6363static umode_t temp_label_attr_is_visible(struct kobject *kobj,
6364 struct attribute *attr, int n)
6365{
6366 return thermal_use_labels ? attr->mode : 0;
6367}
6368
00cc4263 6369static const struct attribute_group temp_label_attr_group = {
79f960e2 6370 .is_visible = temp_label_attr_is_visible,
00cc4263
HG		 6371 .attrs = temp_label_attributes,
6372};
6373
2c37aa4e
HMH		 6374/* --------------------------------------------------------------------- */
6375
a5763f22 6376static int __init thermal_init(struct ibm_init_struct *iibm)
78f81cc4 6377{
6759e18e 6378 u8 t, ta1, ta2, ver = 0;
60eb0b35 6379 int i;
5fba344c
HMH		 6380 int acpi_tmp7;
6381
fe08bc4b
HMH		 6382 vdbg_printk(TPACPI_DBG_INIT, "initializing thermal subdriver\n");
6383
5fba344c 6384 acpi_tmp7 = acpi_evalf(ec_handle, NULL, "TMP7", "qv");
60eb0b35 6385
3d6f99ca 6386 if (thinkpad_id.ec_model) {
60eb0b35
HMH		 6387 /*
6388 * Direct EC access mode: sensors at registers
6389 * 0x78-0x7F, 0xC0-0xC7. Registers return 0x00 for
6390 * non-implemented, thermal sensors return 0x80 when
6391 * not available
6759e18e
MP		 6392 * The above rule is unfortunately flawed. This has been seen with
6393 * 0xC2 (power supply ID) causing thermal control problems.
6394 * The EC version can be determined by offset 0xEF and at least for
6395 * version 3 the Lenovo firmware team confirmed that registers 0xC0-0xC7
6396 * are not thermal registers.
60eb0b35 6397 */
6759e18e
MP		 6398 if (!acpi_ec_read(TP_EC_FUNCREV, &ver))
6399 pr_warn("Thinkpad ACPI EC unable to access EC version\n");
78f81cc4 6400
60eb0b35
HMH		 6401 ta1 = ta2 = 0;
6402 for (i = 0; i < 8; i++) {
04cc862c 6403 if (acpi_ec_read(TP_EC_THERMAL_TMP0 + i, &t)) {
60eb0b35
HMH		 6404 ta1 |= t;
6405 } else {
6406 ta1 = 0;
6407 break;
6408 }
6759e18e
MP		 6409 if (ver < 3) {
6410 if (acpi_ec_read(TP_EC_THERMAL_TMP8 + i, &t)) {
6411 ta2 |= t;
6412 } else {
6413 ta1 = 0;
6414 break;
6415 }
60eb0b35
HMH		 6416 }
6417 }
6418 if (ta1 == 0) {
6419 /* This is sheer paranoia, but we handle it anyway */
6420 if (acpi_tmp7) {
5cac62ac 6421 pr_err("ThinkPad ACPI EC access misbehaving, falling back to ACPI TMPx access mode\n");
efa27145 6422 thermal_read_mode = TPACPI_THERMAL_ACPI_TMP07;
60eb0b35 6423 } else {
5cac62ac 6424 pr_err("ThinkPad ACPI EC access misbehaving, disabling thermal sensors access\n");
efa27145 6425 thermal_read_mode = TPACPI_THERMAL_NONE;
60eb0b35
HMH		 6426 }
6427 } else {
00cc4263 6428 if (ver >= 3) {
6759e18e 6429 thermal_read_mode = TPACPI_THERMAL_TPEC_8;
00cc4263
HG		 6430 thermal_use_labels = true;
6431 } else {
6759e18e
MP		 6432 thermal_read_mode =
6433 (ta2 != 0) ?
6434 TPACPI_THERMAL_TPEC_16 : TPACPI_THERMAL_TPEC_8;
00cc4263 6435 }
60eb0b35
HMH		 6436 }
6437 } else if (acpi_tmp7) {
e28393c0
HMH		 6438 if (tpacpi_is_ibm() &&
6439 acpi_evalf(ec_handle, NULL, "UPDT", "qv")) {
a26f878a 6440 /* 600e/x, 770e, 770x */
efa27145 6441 thermal_read_mode = TPACPI_THERMAL_ACPI_UPDT;
a26f878a 6442 } else {
e28393c0 6443 /* IBM/LENOVO DSDT EC.TMPx access, max 8 sensors */
efa27145 6444 thermal_read_mode = TPACPI_THERMAL_ACPI_TMP07;
a26f878a
HMH		 6445 }
6446 } else {
6447 /* temperatures not supported on 570, G4x, R30, R31, R32 */
efa27145 6448 thermal_read_mode = TPACPI_THERMAL_NONE;
a26f878a 6449 }
78f81cc4 6450
fe08bc4b
HMH		 6451 vdbg_printk(TPACPI_DBG_INIT, "thermal is %s, mode %d\n",
6452 str_supported(thermal_read_mode != TPACPI_THERMAL_NONE),
6453 thermal_read_mode);
6454
c7e1c782 6455 return thermal_read_mode != TPACPI_THERMAL_NONE ? 0 : -ENODEV;
78f81cc4
BD		 6456}
6457
887965e6 6458static int thermal_read(struct seq_file *m)
a26f878a 6459{
a26f878a
HMH		 6460 int n, i;
6461 struct ibm_thermal_sensors_struct t;
6462
6463 n = thermal_get_sensors(&t);
6464 if (unlikely(n < 0))
6465 return n;
6466
887965e6 6467 seq_printf(m, "temperatures:\t");
a26f878a
HMH		 6468
6469 if (n > 0) {
6470 for (i = 0; i < (n - 1); i++)
887965e6
AD		 6471 seq_printf(m, "%d ", t.temp[i] / 1000);
6472 seq_printf(m, "%d\n", t.temp[i] / 1000);
a26f878a 6473 } else
887965e6 6474 seq_printf(m, "not supported\n");
78f81cc4 6475
887965e6 6476 return 0;
78f81cc4
BD		 6477}
6478
a5763f22
HMH		 6479static struct ibm_struct thermal_driver_data = {
6480 .name = "thermal",
6481 .read = thermal_read,
6482};
6483
56b6aeb0
HMH		 6484/*************************************************************************
6485 * Backlight/brightness subdriver
6486 */
6487
f74a27d4
HMH		 6488#define TPACPI_BACKLIGHT_DEV_NAME "thinkpad_screen"
6489
0e501834
HMH		 6490/*
6491 * ThinkPads can read brightness from two places: EC HBRV (0x31), or
6492 * CMOS NVRAM byte 0x5E, bits 0-3.
6493 *
6494 * EC HBRV (0x31) has the following layout
6495 * Bit 7: unknown function
6496 * Bit 6: unknown function
6497 * Bit 5: Z: honour scale changes, NZ: ignore scale changes
6498 * Bit 4: must be set to zero to avoid problems
6499 * Bit 3-0: backlight brightness level
6500 *
6501 * brightness_get_raw returns status data in the HBRV layout
d7880f10
HMH		 6502 *
6503 * WARNING: The X61 has been verified to use HBRV for something else, so
6504 * this should be used _only_ on IBM ThinkPads, and maybe with some careful
6505 * testing on the very early *60 Lenovo models...
0e501834
HMH		 6506 */
6507
e11aecf1
HMH		 6508enum {
6509 TP_EC_BACKLIGHT = 0x31,
6510
6511 /* TP_EC_BACKLIGHT bitmasks */
6512 TP_EC_BACKLIGHT_LVLMSK = 0x1F,
6513 TP_EC_BACKLIGHT_CMDMSK = 0xE0,
6514 TP_EC_BACKLIGHT_MAPSW = 0x20,
6515};
6516
0e501834
HMH		 6517enum tpacpi_brightness_access_mode {
6518 TPACPI_BRGHT_MODE_AUTO = 0, /* Not implemented yet */
6519 TPACPI_BRGHT_MODE_EC, /* EC control */
6520 TPACPI_BRGHT_MODE_UCMS_STEP, /* UCMS step-based control */
6521 TPACPI_BRGHT_MODE_ECNVRAM, /* EC control w/ NVRAM store */
6522 TPACPI_BRGHT_MODE_MAX
6523};
6524
94954cc6 6525static struct backlight_device *ibm_backlight_device;
0e501834
HMH		 6526
6527static enum tpacpi_brightness_access_mode brightness_mode =
6528 TPACPI_BRGHT_MODE_MAX;
6529
f74a27d4
HMH		 6530static unsigned int brightness_enable = 2; /* 2 = auto, 0 = no, 1 = yes */
6531
b21a15f6 6532static struct mutex brightness_mutex;
56b6aeb0 6533
38831eaf 6534/* NVRAM brightness access */
0e501834 6535static unsigned int tpacpi_brightness_nvram_get(void)
b21a15f6 6536{
0e501834 6537 u8 lnvram;
b21a15f6 6538
38831eaf
TW		 6539 lockdep_assert_held(&brightness_mutex);
6540
0e501834
HMH		 6541 lnvram = (nvram_read_byte(TP_NVRAM_ADDR_BRIGHTNESS)
6542 & TP_NVRAM_MASK_LEVEL_BRIGHTNESS)
6543 >> TP_NVRAM_POS_LEVEL_BRIGHTNESS;
77775838 6544 lnvram &= bright_maxlvl;
0e501834
HMH		 6545
6546 return lnvram;
6547}
6548
6549static void tpacpi_brightness_checkpoint_nvram(void)
6550{
6551 u8 lec = 0;
6552 u8 b_nvram;
6553
6554 if (brightness_mode != TPACPI_BRGHT_MODE_ECNVRAM)
6555 return;
6556
6557 vdbg_printk(TPACPI_DBG_BRGHT,
6558 "trying to checkpoint backlight level to NVRAM...\n");
6559
6560 if (mutex_lock_killable(&brightness_mutex) < 0)
6561 return;
6562
6563 if (unlikely(!acpi_ec_read(TP_EC_BACKLIGHT, &lec)))
6564 goto unlock;
6565 lec &= TP_EC_BACKLIGHT_LVLMSK;
6566 b_nvram = nvram_read_byte(TP_NVRAM_ADDR_BRIGHTNESS);
6567
6568 if (lec != ((b_nvram & TP_NVRAM_MASK_LEVEL_BRIGHTNESS)
6569 >> TP_NVRAM_POS_LEVEL_BRIGHTNESS)) {
6570 /* NVRAM needs update */
6571 b_nvram &= ~(TP_NVRAM_MASK_LEVEL_BRIGHTNESS <<
6572 TP_NVRAM_POS_LEVEL_BRIGHTNESS);
6573 b_nvram |= lec;
6574 nvram_write_byte(b_nvram, TP_NVRAM_ADDR_BRIGHTNESS);
6575 dbg_printk(TPACPI_DBG_BRGHT,
6576 "updated NVRAM backlight level to %u (0x%02x)\n",
6577 (unsigned int) lec, (unsigned int) b_nvram);
6578 } else
6579 vdbg_printk(TPACPI_DBG_BRGHT,
6580 "NVRAM backlight level already is %u (0x%02x)\n",
6581 (unsigned int) lec, (unsigned int) b_nvram);
6582
6583unlock:
6584 mutex_unlock(&brightness_mutex);
6585}
6586
6587
0e501834
HMH		 6588static int tpacpi_brightness_get_raw(int *status)
6589{
6590 u8 lec = 0;
6591
38831eaf
TW		 6592 lockdep_assert_held(&brightness_mutex);
6593
0e501834
HMH		 6594 switch (brightness_mode) {
6595 case TPACPI_BRGHT_MODE_UCMS_STEP:
6596 *status = tpacpi_brightness_nvram_get();
6597 return 0;
6598 case TPACPI_BRGHT_MODE_EC:
6599 case TPACPI_BRGHT_MODE_ECNVRAM:
6600 if (unlikely(!acpi_ec_read(TP_EC_BACKLIGHT, &lec)))
2d5e94d7 6601 return -EIO;
0e501834
HMH		 6602 *status = lec;
6603 return 0;
6604 default:
6605 return -ENXIO;
b21a15f6 6606 }
0e501834
HMH		 6607}
6608
0e501834
HMH		 6609/* do NOT call with illegal backlight level value */
6610static int tpacpi_brightness_set_ec(unsigned int value)
6611{
6612 u8 lec = 0;
6613
38831eaf
TW		 6614 lockdep_assert_held(&brightness_mutex);
6615
0e501834
HMH		 6616 if (unlikely(!acpi_ec_read(TP_EC_BACKLIGHT, &lec)))
6617 return -EIO;
6618
6619 if (unlikely(!acpi_ec_write(TP_EC_BACKLIGHT,
6620 (lec & TP_EC_BACKLIGHT_CMDMSK) |
6621 (value & TP_EC_BACKLIGHT_LVLMSK))))
6622 return -EIO;
6623
6624 return 0;
6625}
6626
0e501834
HMH		 6627static int tpacpi_brightness_set_ucmsstep(unsigned int value)
6628{
6629 int cmos_cmd, inc;
6630 unsigned int current_value, i;
6631
38831eaf
TW		 6632 lockdep_assert_held(&brightness_mutex);
6633
0e501834
HMH		 6634 current_value = tpacpi_brightness_nvram_get();
6635
6636 if (value == current_value)
6637 return 0;
6638
6639 cmos_cmd = (value > current_value) ?
6640 TP_CMOS_BRIGHTNESS_UP :
6641 TP_CMOS_BRIGHTNESS_DOWN;
6642 inc = (value > current_value) ? 1 : -1;
6643
6644 for (i = current_value; i != value; i += inc)
6645 if (issue_thinkpad_cmos_command(cmos_cmd))
6646 return -EIO;
b21a15f6 6647
e11aecf1 6648 return 0;
b21a15f6
HMH		 6649}
6650
6651/* May return EINTR which can always be mapped to ERESTARTSYS */
0e501834 6652static int brightness_set(unsigned int value)
b21a15f6 6653{
0e501834 6654 int res;
b21a15f6 6655
bd3c7b9e 6656 if (value > bright_maxlvl)
b21a15f6
HMH		 6657 return -EINVAL;
6658
0e501834
HMH		 6659 vdbg_printk(TPACPI_DBG_BRGHT,
6660 "set backlight level to %d\n", value);
6661
7646ea88 6662 res = mutex_lock_killable(&brightness_mutex);
b21a15f6
HMH		 6663 if (res < 0)
6664 return res;
6665
0e501834
HMH		 6666 switch (brightness_mode) {
6667 case TPACPI_BRGHT_MODE_EC:
6668 case TPACPI_BRGHT_MODE_ECNVRAM:
6669 res = tpacpi_brightness_set_ec(value);
6670 break;
6671 case TPACPI_BRGHT_MODE_UCMS_STEP:
6672 res = tpacpi_brightness_set_ucmsstep(value);
6673 break;
6674 default:
6675 res = -ENXIO;
b21a15f6
HMH		 6676 }
6677
b21a15f6
HMH		 6678 mutex_unlock(&brightness_mutex);
6679 return res;
6680}
6681
6682/* sysfs backlight class ----------------------------------------------- */
6683
6684static int brightness_update_status(struct backlight_device *bd)
6685{
5b54b4d4 6686 int level = backlight_get_brightness(bd);
0e501834
HMH		 6687
6688 dbg_printk(TPACPI_DBG_BRGHT,
6689 "backlight: attempt to set level to %d\n",
6690 level);
6691
6692 /* it is the backlight class's job (caller) to handle
6693 * EINTR and other errors properly */
6694 return brightness_set(level);
b21a15f6
HMH		 6695}
6696
e11aecf1 6697static int brightness_get(struct backlight_device *bd)
a3f104c0 6698{
e11aecf1 6699 int status, res;
a3f104c0 6700
0e501834 6701 res = mutex_lock_killable(&brightness_mutex);
e11aecf1 6702 if (res < 0)
0e501834
HMH		 6703 return 0;
6704
6705 res = tpacpi_brightness_get_raw(&status);
6706
6707 mutex_unlock(&brightness_mutex);
6708
6709 if (res < 0)
6710 return 0;
e11e211a 6711
e11aecf1 6712 return status & TP_EC_BACKLIGHT_LVLMSK;
e11e211a
HMH		 6713}
6714
347a2686
HMH		 6715static void tpacpi_brightness_notify_change(void)
6716{
6717 backlight_force_update(ibm_backlight_device,
6718 BACKLIGHT_UPDATE_HOTKEY);
6719}
6720
acc2472e 6721static const struct backlight_ops ibm_backlight_data = {
35ff8b9f
HMH		 6722 .get_brightness = brightness_get,
6723 .update_status = brightness_update_status,
56b6aeb0 6724};
e11e211a 6725
b21a15f6 6726/* --------------------------------------------------------------------- */
e11e211a 6727
0b1bd1e3
RW		 6728static int __init tpacpi_evaluate_bcl(struct acpi_device *adev, void *not_used)
6729{
6730 struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
6731 union acpi_object *obj;
6732 acpi_status status;
6733 int rc;
6734
6735 status = acpi_evaluate_object(adev->handle, "_BCL", NULL, &buffer);
6736 if (ACPI_FAILURE(status))
6737 return 0;
6738
6739 obj = buffer.pointer;
6740 if (!obj || obj->type != ACPI_TYPE_PACKAGE) {
6741 acpi_handle_info(adev->handle,
6742 "Unknown _BCL data, please report this to %s\n",
6743 TPACPI_MAIL);
6744 rc = 0;
6745 } else {
6746 rc = obj->package.count;
6747 }
6748 kfree(obj);
6749
6750 return rc;
6751}
6752
122f2672
HMH		 6753/*
6754 * Call _BCL method of video device. On some ThinkPads this will
6755 * switch the firmware to the ACPI brightness control mode.
6756 */
6757
77775838
HMH		 6758static int __init tpacpi_query_bcl_levels(acpi_handle handle)
6759{
0b1bd1e3 6760 struct acpi_device *device;
77775838 6761
f7e62c58
RW		 6762 device = acpi_fetch_acpi_dev(handle);
6763 if (!device)
46445b6b
AL		 6764 return 0;
6765
0b1bd1e3 6766 return acpi_dev_for_each_child(device, tpacpi_evaluate_bcl, NULL);
77775838
HMH		 6767}
6768
77775838
HMH		 6769
6770/*
6771 * Returns 0 (no ACPI _BCL or _BCL invalid), or size of brightness map
6772 */
6773static unsigned int __init tpacpi_check_std_acpi_brightness_support(void)
6774{
122f2672 6775 acpi_handle video_device;
77775838 6776 int bcl_levels = 0;
77775838 6777
46445b6b 6778 tpacpi_acpi_handle_locate("video", NULL, &video_device);
122f2672
HMH		 6779 if (video_device)
6780 bcl_levels = tpacpi_query_bcl_levels(video_device);
77775838 6781
122f2672 6782 tp_features.bright_acpimode = (bcl_levels > 0);
77775838 6783
122f2672 6784 return (bcl_levels > 2) ? (bcl_levels - 2) : 0;
77775838
HMH		 6785}
6786
59fe4fe3
HMH		 6787/*
6788 * These are only useful for models that have only one possibility
6789 * of GPU. If the BIOS model handles both ATI and Intel, don't use
6790 * these quirks.
6791 */
6792#define TPACPI_BRGHT_Q_NOEC 0x0001 /* Must NOT use EC HBRV */
6793#define TPACPI_BRGHT_Q_EC 0x0002 /* Should or must use EC HBRV */
6794#define TPACPI_BRGHT_Q_ASK 0x8000 /* Ask for user report */
6795
6796static const struct tpacpi_quirk brightness_quirk_table[] __initconst = {
6797 /* Models with ATI GPUs known to require ECNVRAM mode */
6798 TPACPI_Q_IBM('1', 'Y', TPACPI_BRGHT_Q_EC), /* T43/p ATI */
6799
6da25bf5 6800 /* Models with ATI GPUs that can use ECNVRAM */
7d1894d8 6801 TPACPI_Q_IBM('1', 'R', TPACPI_BRGHT_Q_EC), /* R50,51 T40-42 */
59fe4fe3 6802 TPACPI_Q_IBM('1', 'Q', TPACPI_BRGHT_Q_ASK|TPACPI_BRGHT_Q_EC),
7d1894d8 6803 TPACPI_Q_IBM('7', '6', TPACPI_BRGHT_Q_EC), /* R52 */
59fe4fe3
HMH		 6804 TPACPI_Q_IBM('7', '8', TPACPI_BRGHT_Q_ASK|TPACPI_BRGHT_Q_EC),
6805
6da25bf5 6806 /* Models with Intel Extreme Graphics 2 */
7d1894d8 6807 TPACPI_Q_IBM('1', 'U', TPACPI_BRGHT_Q_NOEC), /* X40 */
a9f8eacc
HMH		 6808 TPACPI_Q_IBM('1', 'V', TPACPI_BRGHT_Q_ASK|TPACPI_BRGHT_Q_EC),
6809 TPACPI_Q_IBM('1', 'W', TPACPI_BRGHT_Q_ASK|TPACPI_BRGHT_Q_EC),
59fe4fe3
HMH		 6810
6811 /* Models with Intel GMA900 */
6812 TPACPI_Q_IBM('7', '0', TPACPI_BRGHT_Q_NOEC), /* T43, R52 */
6813 TPACPI_Q_IBM('7', '4', TPACPI_BRGHT_Q_NOEC), /* X41 */
6814 TPACPI_Q_IBM('7', '5', TPACPI_BRGHT_Q_NOEC), /* X41 Tablet */
6815};
6816
77775838
HMH		 6817/*
6818 * Returns < 0 for error, otherwise sets tp_features.bright_*
6819 * and bright_maxlvl.
6820 */
6821static void __init tpacpi_detect_brightness_capabilities(void)
6822{
6823 unsigned int b;
6824
6825 vdbg_printk(TPACPI_DBG_INIT,
6826 "detecting firmware brightness interface capabilities\n");
6827
6828 /* we could run a quirks check here (same table used by
6829 * brightness_init) if needed */
6830
6831 /*
6832 * We always attempt to detect acpi support, so as to switch
6833 * Lenovo Vista BIOS to ACPI brightness mode even if we are not
6834 * going to publish a backlight interface
6835 */
6836 b = tpacpi_check_std_acpi_brightness_support();
6837 switch (b) {
6838 case 16:
6839 bright_maxlvl = 15;
77775838
HMH		 6840 break;
6841 case 8:
6842 case 0:
6843 bright_maxlvl = 7;
77775838
HMH		 6844 break;
6845 default:
77775838
HMH		 6846 tp_features.bright_unkfw = 1;
6847 bright_maxlvl = b - 1;
6848 }
15c75626 6849 pr_debug("detected %u brightness levels\n", bright_maxlvl + 1);
77775838
HMH		 6850}
6851
a5763f22 6852static int __init brightness_init(struct ibm_init_struct *iibm)
56b6aeb0 6853{
a19a6ee6 6854 struct backlight_properties props;
56b6aeb0 6855 int b;
59fe4fe3 6856 unsigned long quirks;
56b6aeb0 6857
fe08bc4b
HMH		 6858 vdbg_printk(TPACPI_DBG_INIT, "initializing brightness subdriver\n");
6859
f432255e
HMH		 6860 mutex_init(&brightness_mutex);
6861
59fe4fe3
HMH		 6862 quirks = tpacpi_check_quirks(brightness_quirk_table,
6863 ARRAY_SIZE(brightness_quirk_table));
6864
77775838
HMH		 6865 /* tpacpi_detect_brightness_capabilities() must have run already */
6866
6867 /* if it is unknown, we don't handle it: it wouldn't be safe */
6868 if (tp_features.bright_unkfw)
c7e1c782 6869 return -ENODEV;
2dba1b5d 6870
b5972796 6871 if (!brightness_enable) {
0e501834 6872 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_BRGHT,
5cac62ac 6873 "brightness support disabled by module parameter\n");
c7e1c782 6874 return -ENODEV;
b5972796
HMH		 6875 }
6876
b33c6ce5 6877 if (acpi_video_get_backlight_type() != acpi_backlight_vendor) {
217f0963 6878 if (brightness_enable > 1) {
5cac62ac 6879 pr_info("Standard ACPI backlight interface available, not loading native one\n");
c7e1c782 6880 return -ENODEV;
217f0963 6881 } else if (brightness_enable == 1) {
5cac62ac 6882 pr_warn("Cannot enable backlight brightness support, ACPI is already handling it. Refer to the acpi_backlight kernel parameter.\n");
c7e1c782 6883 return -ENODEV;
217f0963 6884 }
46713aee
AM		 6885 } else if (!tp_features.bright_acpimode) {
6886 pr_notice("ACPI backlight interface not available\n");
c7e1c782 6887 return -ENODEV;
217f0963
HMH		 6888 }
6889
46713aee
AM		 6890 pr_notice("ACPI native brightness control enabled\n");
6891
0e501834
HMH		 6892 /*
6893 * Check for module parameter bogosity, note that we
6894 * init brightness_mode to TPACPI_BRGHT_MODE_MAX in order to be
6895 * able to detect "unspecified"
6896 */
6897 if (brightness_mode > TPACPI_BRGHT_MODE_MAX)
6898 return -EINVAL;
24d3b774 6899
0e501834
HMH		 6900 /* TPACPI_BRGHT_MODE_AUTO not implemented yet, just use default */
6901 if (brightness_mode == TPACPI_BRGHT_MODE_AUTO ||
6902 brightness_mode == TPACPI_BRGHT_MODE_MAX) {
59fe4fe3
HMH		 6903 if (quirks & TPACPI_BRGHT_Q_EC)
6904 brightness_mode = TPACPI_BRGHT_MODE_ECNVRAM;
6905 else
0e501834 6906 brightness_mode = TPACPI_BRGHT_MODE_UCMS_STEP;
24d3b774 6907
0e501834 6908 dbg_printk(TPACPI_DBG_BRGHT,
59fe4fe3 6909 "driver auto-selected brightness_mode=%d\n",
0e501834
HMH		 6910 brightness_mode);
6911 }
24d3b774 6912
d7880f10 6913 /* Safety */
e28393c0 6914 if (!tpacpi_is_ibm() &&
d7880f10
HMH		 6915 (brightness_mode == TPACPI_BRGHT_MODE_ECNVRAM ||
6916 brightness_mode == TPACPI_BRGHT_MODE_EC))
6917 return -EINVAL;
6918
0e501834 6919 if (tpacpi_brightness_get_raw(&b) < 0)
c7e1c782 6920 return -ENODEV;
56b6aeb0 6921
a19a6ee6 6922 memset(&props, 0, sizeof(struct backlight_properties));
bb7ca747 6923 props.type = BACKLIGHT_PLATFORM;
77775838
HMH		 6924 props.max_brightness = bright_maxlvl;
6925 props.brightness = b & TP_EC_BACKLIGHT_LVLMSK;
a19a6ee6
MG		 6926 ibm_backlight_device = backlight_device_register(TPACPI_BACKLIGHT_DEV_NAME,
6927 NULL, NULL,
6928 &ibm_backlight_data,
6929 &props);
56b6aeb0 6930 if (IS_ERR(ibm_backlight_device)) {
435c47e2
HMH		 6931 int rc = PTR_ERR(ibm_backlight_device);
6932 ibm_backlight_device = NULL;
0978e012 6933 pr_err("Could not register backlight device\n");
435c47e2 6934 return rc;
56b6aeb0 6935 }
0e501834
HMH		 6936 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_BRGHT,
6937 "brightness is supported\n");
56b6aeb0 6938
59fe4fe3 6939 if (quirks & TPACPI_BRGHT_Q_ASK) {
5cac62ac
AS		 6940 pr_notice("brightness: will use unverified default: brightness_mode=%d\n",
6941 brightness_mode);
6942 pr_notice("brightness: please report to %s whether it works well or not on your ThinkPad\n",
6943 TPACPI_MAIL);
59fe4fe3
HMH		 6944 }
6945
7d9745cf
HMH		 6946 /* Added by mistake in early 2007. Probably useless, but it could
6947 * be working around some unknown firmware problem where the value
6948 * read at startup doesn't match the real hardware state... so leave
6949 * it in place just in case */
56b6aeb0
HMH		 6950 backlight_update_status(ibm_backlight_device);
6951
347a2686 6952 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_BRGHT,
5cac62ac 6953 "brightness: registering brightness hotkeys as change notification\n");
347a2686
HMH		 6954 tpacpi_hotkey_driver_mask_set(hotkey_driver_mask
6955 | TP_ACPI_HKEY_BRGHTUP_MASK
3098064d 6956 | TP_ACPI_HKEY_BRGHTDWN_MASK);
56b6aeb0
HMH		 6957 return 0;
6958}
6959
fd3c3a42 6960static void brightness_suspend(void)
0e501834
HMH		 6961{
6962 tpacpi_brightness_checkpoint_nvram();
6963}
6964
6965static void brightness_shutdown(void)
6966{
6967 tpacpi_brightness_checkpoint_nvram();
6968}
6969
56b6aeb0
HMH		 6970static void brightness_exit(void)
6971{
6972 if (ibm_backlight_device) {
0e501834 6973 vdbg_printk(TPACPI_DBG_EXIT | TPACPI_DBG_BRGHT,
fe08bc4b 6974 "calling backlight_device_unregister()\n");
56b6aeb0 6975 backlight_device_unregister(ibm_backlight_device);
56b6aeb0 6976 }
0e501834
HMH		 6977
6978 tpacpi_brightness_checkpoint_nvram();
56b6aeb0
HMH		 6979}
6980
887965e6 6981static int brightness_read(struct seq_file *m)
56b6aeb0 6982{
56b6aeb0
HMH		 6983 int level;
6984
35ff8b9f
HMH		 6985 level = brightness_get(NULL);
6986 if (level < 0) {
887965e6 6987 seq_printf(m, "level:\t\tunreadable\n");
56b6aeb0 6988 } else {
887965e6
AD		 6989 seq_printf(m, "level:\t\t%d\n", level);
6990 seq_printf(m, "commands:\tup, down\n");
77775838
HMH		 6991 seq_printf(m, "commands:\tlevel <level> (<level> is 0-%d)\n",
6992 bright_maxlvl);
56b6aeb0
HMH		 6993 }
6994
887965e6 6995 return 0;
56b6aeb0
HMH		 6996}
6997
8acb0250
HM		 6998static int brightness_write(char *buf)
6999{
7000 int level;
4273af8d 7001 int rc;
1da177e4 7002 char *cmd;
1da177e4 7003
4273af8d
HMH		 7004 level = brightness_get(NULL);
7005 if (level < 0)
7006 return level;
78f81cc4 7007
be51bd45 7008 while ((cmd = strsep(&buf, ","))) {
26217796 7009 if (strstarts(cmd, "up")) {
77775838 7010 if (level < bright_maxlvl)
4273af8d 7011 level++;
26217796 7012 } else if (strstarts(cmd, "down")) {
4273af8d
HMH		 7013 if (level > 0)
7014 level--;
7015 } else if (sscanf(cmd, "level %d", &level) == 1 &&
77775838 7016 level >= 0 && level <= bright_maxlvl) {
4273af8d 7017 /* new level set */
78f81cc4
BD		 7018 } else
7019 return -EINVAL;
78f81cc4
BD		 7020 }
7021
0e501834
HMH		 7022 tpacpi_disclose_usertask("procfs brightness",
7023 "set level to %d\n", level);
7024
4273af8d
HMH		 7025 /*
7026 * Now we know what the final level should be, so we try to set it.
7027 * Doing it this way makes the syscall restartable in case of EINTR
7028 */
7029 rc = brightness_set(level);
347a2686
HMH		 7030 if (!rc && ibm_backlight_device)
7031 backlight_force_update(ibm_backlight_device,
7032 BACKLIGHT_UPDATE_SYSFS);
72a979f0 7033 return (rc == -EINTR) ? -ERESTARTSYS : rc;
78f81cc4
BD		 7034}
7035
a5763f22
HMH		 7036static struct ibm_struct brightness_driver_data = {
7037 .name = "brightness",
7038 .read = brightness_read,
7039 .write = brightness_write,
7040 .exit = brightness_exit,
0e501834
HMH		 7041 .suspend = brightness_suspend,
7042 .shutdown = brightness_shutdown,
a5763f22
HMH		 7043};
7044
56b6aeb0
HMH		 7045/*************************************************************************
7046 * Volume subdriver
7047 */
fb87a811 7048
329e4e18
HMH		 7049/*
7050 * IBM ThinkPads have a simple volume controller with MUTE gating.
7051 * Very early Lenovo ThinkPads follow the IBM ThinkPad spec.
7052 *
7053 * Since the *61 series (and probably also the later *60 series), Lenovo
7054 * ThinkPads only implement the MUTE gate.
7055 *
7056 * EC register 0x30
7057 * Bit 6: MUTE (1 mutes sound)
7058 * Bit 3-0: Volume
7059 * Other bits should be zero as far as we know.
7060 *
7061 * This is also stored in CMOS NVRAM, byte 0x60, bit 6 (MUTE), and
7062 * bits 3-0 (volume). Other bits in NVRAM may have other functions,
7063 * such as bit 7 which is used to detect repeated presses of MUTE,
7064 * and we leave them unchanged.
9a417ec0
AL		 7065 *
7066 * On newer Lenovo ThinkPads, the EC can automatically change the volume
7067 * in response to user input. Unfortunately, this rarely works well.
7068 * The laptop changes the state of its internal MUTE gate and, on some
7069 * models, sends KEY_MUTE, causing any user code that responds to the
7070 * mute button to get confused. The hardware MUTE gate is also
7071 * unnecessary, since user code can handle the mute button without
7072 * kernel or EC help.
7073 *
7074 * To avoid confusing userspace, we simply disable all EC-based mute
7075 * and volume controls when possible.
329e4e18
HMH		 7076 */
7077
ff850c33
HMH		 7078#ifdef CONFIG_THINKPAD_ACPI_ALSA_SUPPORT
7079
0d204c34
HMH		 7080#define TPACPI_ALSA_DRVNAME "ThinkPad EC"
7081#define TPACPI_ALSA_SHRTNAME "ThinkPad Console Audio Control"
7082#define TPACPI_ALSA_MIXERNAME TPACPI_ALSA_SHRTNAME
7083
cab66613
TI		 7084#if SNDRV_CARDS <= 32
7085#define DEFAULT_ALSA_IDX ~((1 << (SNDRV_CARDS - 3)) - 1)
7086#else
7087#define DEFAULT_ALSA_IDX ~((1 << (32 - 3)) - 1)
7088#endif
7089static int alsa_index = DEFAULT_ALSA_IDX; /* last three slots */
0d204c34 7090static char *alsa_id = "ThinkPadEC";
90ab5ee9 7091static bool alsa_enable = SNDRV_DEFAULT_ENABLE1;
0d204c34
HMH		 7092
7093struct tpacpi_alsa_data {
7094 struct snd_card *card;
7095 struct snd_ctl_elem_id *ctl_mute_id;
7096 struct snd_ctl_elem_id *ctl_vol_id;
7097};
7098
7099static struct snd_card *alsa_card;
7100
329e4e18
HMH		 7101enum {
7102 TP_EC_AUDIO = 0x30,
7103
7104 /* TP_EC_AUDIO bits */
7105 TP_EC_AUDIO_MUTESW = 6,
7106
7107 /* TP_EC_AUDIO bitmasks */
7108 TP_EC_AUDIO_LVL_MSK = 0x0F,
7109 TP_EC_AUDIO_MUTESW_MSK = (1 << TP_EC_AUDIO_MUTESW),
7110
7111 /* Maximum volume */
7112 TP_EC_VOLUME_MAX = 14,
7113};
7114
7115enum tpacpi_volume_access_mode {
7116 TPACPI_VOL_MODE_AUTO = 0, /* Not implemented yet */
7117 TPACPI_VOL_MODE_EC, /* Pure EC control */
7118 TPACPI_VOL_MODE_UCMS_STEP, /* UCMS step-based control: N/A */
7119 TPACPI_VOL_MODE_ECNVRAM, /* EC control w/ NVRAM store */
7120 TPACPI_VOL_MODE_MAX
7121};
7122
a112ceee
HMH		 7123enum tpacpi_volume_capabilities {
7124 TPACPI_VOL_CAP_AUTO = 0, /* Use white/blacklist */
7125 TPACPI_VOL_CAP_VOLMUTE, /* Output vol and mute */
7126 TPACPI_VOL_CAP_MUTEONLY, /* Output mute only */
7127 TPACPI_VOL_CAP_MAX
7128};
7129
9a417ec0
AL		 7130enum tpacpi_mute_btn_mode {
7131 TP_EC_MUTE_BTN_LATCH = 0, /* Mute mutes; up/down unmutes */
7132 /* We don't know what mode 1 is. */
7133 TP_EC_MUTE_BTN_NONE = 2, /* Mute and up/down are just keys */
7134 TP_EC_MUTE_BTN_TOGGLE = 3, /* Mute toggles; up/down unmutes */
7135};
7136
329e4e18
HMH		 7137static enum tpacpi_volume_access_mode volume_mode =
7138 TPACPI_VOL_MODE_MAX;
7139
a112ceee 7140static enum tpacpi_volume_capabilities volume_capabilities;
90ab5ee9 7141static bool volume_control_allowed;
9a417ec0
AL		 7142static bool software_mute_requested = true;
7143static bool software_mute_active;
7144static int software_mute_orig_mode;
f74a27d4 7145
329e4e18
HMH		 7146/*
7147 * Used to syncronize writers to TP_EC_AUDIO and
7148 * TP_NVRAM_ADDR_MIXER, as we need to do read-modify-write
7149 */
7150static struct mutex volume_mutex;
7151
7152static void tpacpi_volume_checkpoint_nvram(void)
78f81cc4 7153{
329e4e18
HMH		 7154 u8 lec = 0;
7155 u8 b_nvram;
a112ceee 7156 u8 ec_mask;
329e4e18
HMH		 7157
7158 if (volume_mode != TPACPI_VOL_MODE_ECNVRAM)
7159 return;
c7ac6291
HMH		 7160 if (!volume_control_allowed)
7161 return;
9a417ec0
AL		 7162 if (software_mute_active)
7163 return;
329e4e18
HMH		 7164
7165 vdbg_printk(TPACPI_DBG_MIXER,
7166 "trying to checkpoint mixer state to NVRAM...\n");
78f81cc4 7167
a112ceee
HMH		 7168 if (tp_features.mixer_no_level_control)
7169 ec_mask = TP_EC_AUDIO_MUTESW_MSK;
7170 else
7171 ec_mask = TP_EC_AUDIO_MUTESW_MSK | TP_EC_AUDIO_LVL_MSK;
7172
329e4e18
HMH		 7173 if (mutex_lock_killable(&volume_mutex) < 0)
7174 return;
7175
7176 if (unlikely(!acpi_ec_read(TP_EC_AUDIO, &lec)))
7177 goto unlock;
7178 lec &= ec_mask;
7179 b_nvram = nvram_read_byte(TP_NVRAM_ADDR_MIXER);
7180
7181 if (lec != (b_nvram & ec_mask)) {
7182 /* NVRAM needs update */
7183 b_nvram &= ~ec_mask;
7184 b_nvram |= lec;
7185 nvram_write_byte(b_nvram, TP_NVRAM_ADDR_MIXER);
7186 dbg_printk(TPACPI_DBG_MIXER,
7187 "updated NVRAM mixer status to 0x%02x (0x%02x)\n",
7188 (unsigned int) lec, (unsigned int) b_nvram);
78f81cc4 7189 } else {
329e4e18
HMH		 7190 vdbg_printk(TPACPI_DBG_MIXER,
7191 "NVRAM mixer status already is 0x%02x (0x%02x)\n",
7192 (unsigned int) lec, (unsigned int) b_nvram);
78f81cc4
BD		 7193 }
7194
329e4e18
HMH		 7195unlock:
7196 mutex_unlock(&volume_mutex);
78f81cc4
BD		 7197}
7198
329e4e18 7199static int volume_get_status_ec(u8 *status)
78f81cc4 7200{
329e4e18 7201 u8 s;
78f81cc4 7202
329e4e18
HMH		 7203 if (!acpi_ec_read(TP_EC_AUDIO, &s))
7204 return -EIO;
78f81cc4 7205
329e4e18 7206 *status = s;
1da177e4 7207
329e4e18 7208 dbg_printk(TPACPI_DBG_MIXER, "status 0x%02x\n", s);
35ff8b9f 7209
329e4e18
HMH		 7210 return 0;
7211}
78f81cc4 7212
329e4e18
HMH		 7213static int volume_get_status(u8 *status)
7214{
7215 return volume_get_status_ec(status);
7216}
78f81cc4 7217
329e4e18
HMH		 7218static int volume_set_status_ec(const u8 status)
7219{
7220 if (!acpi_ec_write(TP_EC_AUDIO, status))
7221 return -EIO;
78f81cc4 7222
329e4e18
HMH		 7223 dbg_printk(TPACPI_DBG_MIXER, "set EC mixer to 0x%02x\n", status);
7224
9a417ec0
AL		 7225 /*
7226 * On X200s, and possibly on others, it can take a while for
7227 * reads to become correct.
7228 */
7229 msleep(1);
7230
329e4e18
HMH		 7231 return 0;
7232}
7233
7234static int volume_set_status(const u8 status)
7235{
7236 return volume_set_status_ec(status);
7237}
7238
88cc8377
HMH		 7239/* returns < 0 on error, 0 on no change, 1 on change */
7240static int __volume_set_mute_ec(const bool mute)
329e4e18
HMH		 7241{
7242 int rc;
7243 u8 s, n;
7244
7245 if (mutex_lock_killable(&volume_mutex) < 0)
7246 return -EINTR;
7247
7248 rc = volume_get_status_ec(&s);
7249 if (rc)
7250 goto unlock;
7251
7252 n = (mute) ? s | TP_EC_AUDIO_MUTESW_MSK :
7253 s & ~TP_EC_AUDIO_MUTESW_MSK;
7254
88cc8377 7255 if (n != s) {
329e4e18 7256 rc = volume_set_status_ec(n);
88cc8377
HMH		 7257 if (!rc)
7258 rc = 1;
7259 }
329e4e18
HMH		 7260
7261unlock:
7262 mutex_unlock(&volume_mutex);
7263 return rc;
7264}
7265
88cc8377
HMH		 7266static int volume_alsa_set_mute(const bool mute)
7267{
7268 dbg_printk(TPACPI_DBG_MIXER, "ALSA: trying to %smute\n",
7269 (mute) ? "" : "un");
7270 return __volume_set_mute_ec(mute);
7271}
7272
329e4e18
HMH		 7273static int volume_set_mute(const bool mute)
7274{
88cc8377
HMH		 7275 int rc;
7276
329e4e18
HMH		 7277 dbg_printk(TPACPI_DBG_MIXER, "trying to %smute\n",
7278 (mute) ? "" : "un");
88cc8377
HMH		 7279
7280 rc = __volume_set_mute_ec(mute);
7281 return (rc < 0) ? rc : 0;
329e4e18
HMH		 7282}
7283
88cc8377
HMH		 7284/* returns < 0 on error, 0 on no change, 1 on change */
7285static int __volume_set_volume_ec(const u8 vol)
329e4e18
HMH		 7286{
7287 int rc;
7288 u8 s, n;
7289
7290 if (vol > TP_EC_VOLUME_MAX)
7291 return -EINVAL;
7292
7293 if (mutex_lock_killable(&volume_mutex) < 0)
7294 return -EINTR;
7295
7296 rc = volume_get_status_ec(&s);
7297 if (rc)
7298 goto unlock;
7299
7300 n = (s & ~TP_EC_AUDIO_LVL_MSK) | vol;
7301
88cc8377 7302 if (n != s) {
329e4e18 7303 rc = volume_set_status_ec(n);
88cc8377
HMH		 7304 if (!rc)
7305 rc = 1;
7306 }
329e4e18
HMH		 7307
7308unlock:
7309 mutex_unlock(&volume_mutex);
7310 return rc;
7311}
7312
9a417ec0
AL		 7313static int volume_set_software_mute(bool startup)
7314{
7315 int result;
7316
7317 if (!tpacpi_is_lenovo())
7318 return -ENODEV;
7319
7320 if (startup) {
7321 if (!acpi_evalf(ec_handle, &software_mute_orig_mode,
7322 "HAUM", "qd"))
7323 return -EIO;
7324
7325 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER,
7326 "Initial HAUM setting was %d\n",
7327 software_mute_orig_mode);
7328 }
7329
7330 if (!acpi_evalf(ec_handle, &result, "SAUM", "qdd",
7331 (int)TP_EC_MUTE_BTN_NONE))
7332 return -EIO;
7333
7334 if (result != TP_EC_MUTE_BTN_NONE)
7335 pr_warn("Unexpected SAUM result %d\n",
7336 result);
7337
7338 /*
7339 * In software mute mode, the standard codec controls take
7340 * precendence, so we unmute the ThinkPad HW switch at
7341 * startup. Just on case there are SAUM-capable ThinkPads
7342 * with level controls, set max HW volume as well.
7343 */
7344 if (tp_features.mixer_no_level_control)
7345 result = volume_set_mute(false);
7346 else
7347 result = volume_set_status(TP_EC_VOLUME_MAX);
7348
7349 if (result != 0)
7350 pr_warn("Failed to unmute the HW mute switch\n");
7351
7352 return 0;
7353}
7354
7355static void volume_exit_software_mute(void)
7356{
7357 int r;
7358
7359 if (!acpi_evalf(ec_handle, &r, "SAUM", "qdd", software_mute_orig_mode)
7360 || r != software_mute_orig_mode)
7361 pr_warn("Failed to restore mute mode\n");
7362}
7363
88cc8377 7364static int volume_alsa_set_volume(const u8 vol)
329e4e18
HMH		 7365{
7366 dbg_printk(TPACPI_DBG_MIXER,
88cc8377
HMH		 7367 "ALSA: trying to set volume level to %hu\n", vol);
7368 return __volume_set_volume_ec(vol);
329e4e18
HMH		 7369}
7370
0d204c34
HMH		 7371static void volume_alsa_notify_change(void)
7372{
7373 struct tpacpi_alsa_data *d;
7374
7375 if (alsa_card && alsa_card->private_data) {
7376 d = alsa_card->private_data;
7377 if (d->ctl_mute_id)
7378 snd_ctl_notify(alsa_card,
7379 SNDRV_CTL_EVENT_MASK_VALUE,
7380 d->ctl_mute_id);
7381 if (d->ctl_vol_id)
7382 snd_ctl_notify(alsa_card,
7383 SNDRV_CTL_EVENT_MASK_VALUE,
7384 d->ctl_vol_id);
7385 }
7386}
7387
7388static int volume_alsa_vol_info(struct snd_kcontrol *kcontrol,
7389 struct snd_ctl_elem_info *uinfo)
7390{
7391 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
7392 uinfo->count = 1;
7393 uinfo->value.integer.min = 0;
7394 uinfo->value.integer.max = TP_EC_VOLUME_MAX;
7395 return 0;
7396}
7397
7398static int volume_alsa_vol_get(struct snd_kcontrol *kcontrol,
7399 struct snd_ctl_elem_value *ucontrol)
7400{
7401 u8 s;
7402 int rc;
7403
7404 rc = volume_get_status(&s);
7405 if (rc < 0)
7406 return rc;
7407
7408 ucontrol->value.integer.value[0] = s & TP_EC_AUDIO_LVL_MSK;
7409 return 0;
7410}
7411
7412static int volume_alsa_vol_put(struct snd_kcontrol *kcontrol,
7413 struct snd_ctl_elem_value *ucontrol)
7414{
38e11cde
HMH		 7415 tpacpi_disclose_usertask("ALSA", "set volume to %ld\n",
7416 ucontrol->value.integer.value[0]);
88cc8377 7417 return volume_alsa_set_volume(ucontrol->value.integer.value[0]);
0d204c34
HMH		 7418}
7419
7420#define volume_alsa_mute_info snd_ctl_boolean_mono_info
7421
7422static int volume_alsa_mute_get(struct snd_kcontrol *kcontrol,
7423 struct snd_ctl_elem_value *ucontrol)
7424{
7425 u8 s;
7426 int rc;
7427
7428 rc = volume_get_status(&s);
7429 if (rc < 0)
7430 return rc;
7431
7432 ucontrol->value.integer.value[0] =
7433 (s & TP_EC_AUDIO_MUTESW_MSK) ? 0 : 1;
7434 return 0;
7435}
7436
7437static int volume_alsa_mute_put(struct snd_kcontrol *kcontrol,
7438 struct snd_ctl_elem_value *ucontrol)
7439{
38e11cde
HMH		 7440 tpacpi_disclose_usertask("ALSA", "%smute\n",
7441 ucontrol->value.integer.value[0] ?
7442 "un" : "");
88cc8377 7443 return volume_alsa_set_mute(!ucontrol->value.integer.value[0]);
0d204c34
HMH		 7444}
7445
c3aa4723 7446static struct snd_kcontrol_new volume_alsa_control_vol __initdata = {
0d204c34
HMH		 7447 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
7448 .name = "Console Playback Volume",
7449 .index = 0,
7450 .access = SNDRV_CTL_ELEM_ACCESS_READ,
7451 .info = volume_alsa_vol_info,
7452 .get = volume_alsa_vol_get,
7453};
7454
c3aa4723 7455static struct snd_kcontrol_new volume_alsa_control_mute __initdata = {
0d204c34
HMH		 7456 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
7457 .name = "Console Playback Switch",
7458 .index = 0,
7459 .access = SNDRV_CTL_ELEM_ACCESS_READ,
7460 .info = volume_alsa_mute_info,
7461 .get = volume_alsa_mute_get,
7462};
7463
fd3c3a42 7464static void volume_suspend(void)
329e4e18
HMH		 7465{
7466 tpacpi_volume_checkpoint_nvram();
7467}
7468
0d204c34
HMH		 7469static void volume_resume(void)
7470{
9a417ec0
AL		 7471 if (software_mute_active) {
7472 if (volume_set_software_mute(false) < 0)
7473 pr_warn("Failed to restore software mute\n");
7474 } else {
7475 volume_alsa_notify_change();
7476 }
0d204c34
HMH		 7477}
7478
329e4e18
HMH		 7479static void volume_shutdown(void)
7480{
7481 tpacpi_volume_checkpoint_nvram();
7482}
7483
7484static void volume_exit(void)
7485{
0d204c34
HMH		 7486 if (alsa_card) {
7487 snd_card_free(alsa_card);
7488 alsa_card = NULL;
7489 }
7490
329e4e18 7491 tpacpi_volume_checkpoint_nvram();
9a417ec0
AL		 7492
7493 if (software_mute_active)
7494 volume_exit_software_mute();
329e4e18
HMH		 7495}
7496
0d204c34
HMH		 7497static int __init volume_create_alsa_mixer(void)
7498{
7499 struct snd_card *card;
7500 struct tpacpi_alsa_data *data;
7501 struct snd_kcontrol *ctl_vol;
7502 struct snd_kcontrol *ctl_mute;
7503 int rc;
7504
89235e55
TI		 7505 rc = snd_card_new(&tpacpi_pdev->dev,
7506 alsa_index, alsa_id, THIS_MODULE,
7507 sizeof(struct tpacpi_alsa_data), &card);
74c75c18 7508 if (rc < 0 || !card) {
0978e012 7509 pr_err("Failed to create ALSA card structures: %d\n", rc);
c7e1c782 7510 return -ENODEV;
74c75c18 7511 }
0d204c34
HMH		 7512
7513 BUG_ON(!card->private_data);
7514 data = card->private_data;
7515 data->card = card;
7516
9c9ac2e6 7517 strscpy(card->driver, TPACPI_ALSA_DRVNAME,
0d204c34 7518 sizeof(card->driver));
9c9ac2e6 7519 strscpy(card->shortname, TPACPI_ALSA_SHRTNAME,
0d204c34
HMH		 7520 sizeof(card->shortname));
7521 snprintf(card->mixername, sizeof(card->mixername), "ThinkPad EC %s",
7522 (thinkpad_id.ec_version_str) ?
7523 thinkpad_id.ec_version_str : "(unknown)");
7524 snprintf(card->longname, sizeof(card->longname),
7525 "%s at EC reg 0x%02x, fw %s", card->shortname, TP_EC_AUDIO,
7526 (thinkpad_id.ec_version_str) ?
7527 thinkpad_id.ec_version_str : "unknown");
7528
7529 if (volume_control_allowed) {
7530 volume_alsa_control_vol.put = volume_alsa_vol_put;
7531 volume_alsa_control_vol.access =
7532 SNDRV_CTL_ELEM_ACCESS_READWRITE;
7533
7534 volume_alsa_control_mute.put = volume_alsa_mute_put;
7535 volume_alsa_control_mute.access =
7536 SNDRV_CTL_ELEM_ACCESS_READWRITE;
7537 }
7538
7539 if (!tp_features.mixer_no_level_control) {
7540 ctl_vol = snd_ctl_new1(&volume_alsa_control_vol, NULL);
7541 rc = snd_ctl_add(card, ctl_vol);
7542 if (rc < 0) {
0978e012
JP		 7543 pr_err("Failed to create ALSA volume control: %d\n",
7544 rc);
74c75c18 7545 goto err_exit;
78f81cc4 7546 }
0d204c34
HMH		 7547 data->ctl_vol_id = &ctl_vol->id;
7548 }
78f81cc4 7549
0d204c34
HMH		 7550 ctl_mute = snd_ctl_new1(&volume_alsa_control_mute, NULL);
7551 rc = snd_ctl_add(card, ctl_mute);
7552 if (rc < 0) {
0978e012 7553 pr_err("Failed to create ALSA mute control: %d\n", rc);
74c75c18 7554 goto err_exit;
0d204c34
HMH		 7555 }
7556 data->ctl_mute_id = &ctl_mute->id;
35ff8b9f 7557
0d204c34 7558 rc = snd_card_register(card);
0d204c34 7559 if (rc < 0) {
0978e012 7560 pr_err("Failed to register ALSA card: %d\n", rc);
74c75c18 7561 goto err_exit;
0d204c34
HMH		 7562 }
7563
7564 alsa_card = card;
74c75c18
HMH		 7565 return 0;
7566
7567err_exit:
7568 snd_card_free(card);
c7e1c782 7569 return -ENODEV;
0d204c34
HMH		 7570}
7571
a112ceee
HMH		 7572#define TPACPI_VOL_Q_MUTEONLY 0x0001 /* Mute-only control available */
7573#define TPACPI_VOL_Q_LEVEL 0x0002 /* Volume control available */
7574
7575static const struct tpacpi_quirk volume_quirk_table[] __initconst = {
7576 /* Whitelist volume level on all IBM by default */
7577 { .vendor = PCI_VENDOR_ID_IBM,
7578 .bios = TPACPI_MATCH_ANY,
7579 .ec = TPACPI_MATCH_ANY,
7580 .quirks = TPACPI_VOL_Q_LEVEL },
7581
7582 /* Lenovo models with volume control (needs confirmation) */
7583 TPACPI_QEC_LNV('7', 'C', TPACPI_VOL_Q_LEVEL), /* R60/i */
7584 TPACPI_QEC_LNV('7', 'E', TPACPI_VOL_Q_LEVEL), /* R60e/i */
7585 TPACPI_QEC_LNV('7', '9', TPACPI_VOL_Q_LEVEL), /* T60/p */
7586 TPACPI_QEC_LNV('7', 'B', TPACPI_VOL_Q_LEVEL), /* X60/s */
7587 TPACPI_QEC_LNV('7', 'J', TPACPI_VOL_Q_LEVEL), /* X60t */
7588 TPACPI_QEC_LNV('7', '7', TPACPI_VOL_Q_LEVEL), /* Z60 */
7589 TPACPI_QEC_LNV('7', 'F', TPACPI_VOL_Q_LEVEL), /* Z61 */
7590
7591 /* Whitelist mute-only on all Lenovo by default */
7592 { .vendor = PCI_VENDOR_ID_LENOVO,
7593 .bios = TPACPI_MATCH_ANY,
7594 .ec = TPACPI_MATCH_ANY,
7595 .quirks = TPACPI_VOL_Q_MUTEONLY }
7596};
7597
329e4e18
HMH		 7598static int __init volume_init(struct ibm_init_struct *iibm)
7599{
a112ceee 7600 unsigned long quirks;
0d204c34 7601 int rc;
a112ceee 7602
329e4e18
HMH		 7603 vdbg_printk(TPACPI_DBG_INIT, "initializing volume subdriver\n");
7604
7605 mutex_init(&volume_mutex);
7606
7607 /*
7608 * Check for module parameter bogosity, note that we
7609 * init volume_mode to TPACPI_VOL_MODE_MAX in order to be
7610 * able to detect "unspecified"
7611 */
7612 if (volume_mode > TPACPI_VOL_MODE_MAX)
7613 return -EINVAL;
7614
7615 if (volume_mode == TPACPI_VOL_MODE_UCMS_STEP) {
5cac62ac
AS		 7616 pr_err("UCMS step volume mode not implemented, please contact %s\n",
7617 TPACPI_MAIL);
c7e1c782 7618 return -ENODEV;
329e4e18
HMH		 7619 }
7620
a112ceee
HMH		 7621 if (volume_capabilities >= TPACPI_VOL_CAP_MAX)
7622 return -EINVAL;
7623
0d204c34
HMH		 7624 /*
7625 * The ALSA mixer is our primary interface.
7626 * When disabled, don't install the subdriver at all
7627 */
7628 if (!alsa_enable) {
7629 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER,
5cac62ac 7630 "ALSA mixer disabled by parameter, not loading volume subdriver...\n");
c7e1c782 7631 return -ENODEV;
0d204c34
HMH		 7632 }
7633
a112ceee
HMH		 7634 quirks = tpacpi_check_quirks(volume_quirk_table,
7635 ARRAY_SIZE(volume_quirk_table));
7636
7637 switch (volume_capabilities) {
7638 case TPACPI_VOL_CAP_AUTO:
7639 if (quirks & TPACPI_VOL_Q_MUTEONLY)
7640 tp_features.mixer_no_level_control = 1;
7641 else if (quirks & TPACPI_VOL_Q_LEVEL)
7642 tp_features.mixer_no_level_control = 0;
7643 else
c7e1c782 7644 return -ENODEV; /* no mixer */
a112ceee
HMH		 7645 break;
7646 case TPACPI_VOL_CAP_VOLMUTE:
7647 tp_features.mixer_no_level_control = 0;
7648 break;
7649 case TPACPI_VOL_CAP_MUTEONLY:
7650 tp_features.mixer_no_level_control = 1;
7651 break;
7652 default:
c7e1c782 7653 return -ENODEV;
a112ceee
HMH		 7654 }
7655
7656 if (volume_capabilities != TPACPI_VOL_CAP_AUTO)
7657 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER,
7658 "using user-supplied volume_capabilities=%d\n",
7659 volume_capabilities);
7660
329e4e18
HMH		 7661 if (volume_mode == TPACPI_VOL_MODE_AUTO ||
7662 volume_mode == TPACPI_VOL_MODE_MAX) {
7663 volume_mode = TPACPI_VOL_MODE_ECNVRAM;
7664
7665 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER,
7666 "driver auto-selected volume_mode=%d\n",
7667 volume_mode);
7668 } else {
7669 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER,
7670 "using user-supplied volume_mode=%d\n",
7671 volume_mode);
7672 }
7673
7674 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER,
a112ceee
HMH		 7675 "mute is supported, volume control is %s\n",
7676 str_supported(!tp_features.mixer_no_level_control));
329e4e18 7677
9a417ec0
AL		 7678 if (software_mute_requested && volume_set_software_mute(true) == 0) {
7679 software_mute_active = true;
7680 } else {
7681 rc = volume_create_alsa_mixer();
7682 if (rc) {
7683 pr_err("Could not create the ALSA mixer interface\n");
7684 return rc;
7685 }
0d204c34 7686
9a417ec0
AL		 7687 pr_info("Console audio control enabled, mode: %s\n",
7688 (volume_control_allowed) ?
7689 "override (read/write)" :
7690 "monitor (read only)");
7691 }
c7ac6291 7692
0d204c34
HMH		 7693 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER,
7694 "registering volume hotkeys as change notification\n");
7695 tpacpi_hotkey_driver_mask_set(hotkey_driver_mask
7696 | TP_ACPI_HKEY_VOLUP_MASK
7697 | TP_ACPI_HKEY_VOLDWN_MASK
7698 | TP_ACPI_HKEY_MUTE_MASK);
7699
329e4e18
HMH		 7700 return 0;
7701}
f74a27d4 7702
887965e6 7703static int volume_read(struct seq_file *m)
78f81cc4 7704{
329e4e18 7705 u8 status;
78f81cc4 7706
329e4e18 7707 if (volume_get_status(&status) < 0) {
887965e6 7708 seq_printf(m, "level:\t\tunreadable\n");
78f81cc4 7709 } else {
a112ceee 7710 if (tp_features.mixer_no_level_control)
887965e6 7711 seq_printf(m, "level:\t\tunsupported\n");
a112ceee 7712 else
887965e6 7713 seq_printf(m, "level:\t\t%d\n",
a112ceee
HMH		 7714 status & TP_EC_AUDIO_LVL_MSK);
7715
664607f5 7716 seq_printf(m, "mute:\t\t%s\n", str_on_off(status & BIT(TP_EC_AUDIO_MUTESW)));
a112ceee 7717
c7ac6291 7718 if (volume_control_allowed) {
887965e6 7719 seq_printf(m, "commands:\tunmute, mute\n");
c7ac6291 7720 if (!tp_features.mixer_no_level_control) {
5cac62ac
AS		 7721 seq_printf(m, "commands:\tup, down\n");
7722 seq_printf(m, "commands:\tlevel <level> (<level> is 0-%d)\n",
7723 TP_EC_VOLUME_MAX);
c7ac6291 7724 }
78f81cc4
BD		 7725 }
7726 }
7727
7728 return 0;
7729}
7730
78f81cc4
BD		 7731static int volume_write(char *buf)
7732{
329e4e18
HMH		 7733 u8 s;
7734 u8 new_level, new_mute;
7735 int l;
78f81cc4 7736 char *cmd;
329e4e18 7737 int rc;
78f81cc4 7738
c7ac6291
HMH		 7739 /*
7740 * We do allow volume control at driver startup, so that the
7741 * user can set initial state through the volume=... parameter hack.
7742 */
7743 if (!volume_control_allowed && tpacpi_lifecycle != TPACPI_LIFE_INIT) {
7744 if (unlikely(!tp_warned.volume_ctrl_forbidden)) {
7745 tp_warned.volume_ctrl_forbidden = 1;
5cac62ac
AS		 7746 pr_notice("Console audio control in monitor mode, changes are not allowed\n");
7747 pr_notice("Use the volume_control=1 module parameter to enable volume control\n");
c7ac6291
HMH		 7748 }
7749 return -EPERM;
7750 }
7751
329e4e18
HMH		 7752 rc = volume_get_status(&s);
7753 if (rc < 0)
7754 return rc;
78f81cc4 7755
329e4e18
HMH		 7756 new_level = s & TP_EC_AUDIO_LVL_MSK;
7757 new_mute = s & TP_EC_AUDIO_MUTESW_MSK;
7758
be51bd45 7759 while ((cmd = strsep(&buf, ","))) {
a112ceee 7760 if (!tp_features.mixer_no_level_control) {
26217796 7761 if (strstarts(cmd, "up")) {
a112ceee
HMH		 7762 if (new_mute)
7763 new_mute = 0;
7764 else if (new_level < TP_EC_VOLUME_MAX)
7765 new_level++;
7766 continue;
26217796 7767 } else if (strstarts(cmd, "down")) {
a112ceee
HMH		 7768 if (new_mute)
7769 new_mute = 0;
7770 else if (new_level > 0)
7771 new_level--;
7772 continue;
7773 } else if (sscanf(cmd, "level %u", &l) == 1 &&
7774 l >= 0 && l <= TP_EC_VOLUME_MAX) {
3fca4b14 7775 new_level = l;
a112ceee
HMH		 7776 continue;
7777 }
7778 }
26217796 7779 if (strstarts(cmd, "mute"))
329e4e18 7780 new_mute = TP_EC_AUDIO_MUTESW_MSK;
26217796 7781 else if (strstarts(cmd, "unmute"))
a112ceee
HMH		 7782 new_mute = 0;
7783 else
1da177e4 7784 return -EINVAL;
329e4e18 7785 }
1da177e4 7786
a112ceee
HMH		 7787 if (tp_features.mixer_no_level_control) {
7788 tpacpi_disclose_usertask("procfs volume", "%smute\n",
7789 new_mute ? "" : "un");
7790 rc = volume_set_mute(!!new_mute);
7791 } else {
7792 tpacpi_disclose_usertask("procfs volume",
7793 "%smute and set level to %d\n",
7794 new_mute ? "" : "un", new_level);
7795 rc = volume_set_status(new_mute | new_level);
7796 }
0d204c34 7797 volume_alsa_notify_change();
78f81cc4 7798
329e4e18 7799 return (rc == -EINTR) ? -ERESTARTSYS : rc;
78f81cc4
BD		 7800}
7801
a5763f22
HMH		 7802static struct ibm_struct volume_driver_data = {
7803 .name = "volume",
7804 .read = volume_read,
7805 .write = volume_write,
329e4e18
HMH		 7806 .exit = volume_exit,
7807 .suspend = volume_suspend,
0d204c34 7808 .resume = volume_resume,
329e4e18 7809 .shutdown = volume_shutdown,
a5763f22 7810};
56b6aeb0 7811
ff850c33
HMH		 7812#else /* !CONFIG_THINKPAD_ACPI_ALSA_SUPPORT */
7813
7814#define alsa_card NULL
7815
bb55a2ee 7816static inline void volume_alsa_notify_change(void)
ff850c33
HMH		 7817{
7818}
7819
7820static int __init volume_init(struct ibm_init_struct *iibm)
7821{
0978e012 7822 pr_info("volume: disabled as there is no ALSA support in this kernel\n");
ff850c33 7823
c7e1c782 7824 return -ENODEV;
ff850c33
HMH		 7825}
7826
7827static struct ibm_struct volume_driver_data = {
7828 .name = "volume",
7829};
7830
7831#endif /* CONFIG_THINKPAD_ACPI_ALSA_SUPPORT */
7832
56b6aeb0
HMH		 7833/*************************************************************************
7834 * Fan subdriver
7835 */
7836
7837/*
7838 * FAN ACCESS MODES
7839 *
efa27145 7840 * TPACPI_FAN_RD_ACPI_GFAN:
56b6aeb0
HMH		 7841 * ACPI GFAN method: returns fan level
7842 *
efa27145 7843 * see TPACPI_FAN_WR_ACPI_SFAN
f51d1a39 7844 * EC 0x2f (HFSP) not available if GFAN exists
56b6aeb0 7845 *
efa27145 7846 * TPACPI_FAN_WR_ACPI_SFAN:
56b6aeb0
HMH		 7847 * ACPI SFAN method: sets fan level, 0 (stop) to 7 (max)
7848 *
f51d1a39
HMH		 7849 * EC 0x2f (HFSP) might be available *for reading*, but do not use
7850 * it for writing.
56b6aeb0 7851 *
efa27145 7852 * TPACPI_FAN_WR_TPEC:
f51d1a39
HMH		 7853 * ThinkPad EC register 0x2f (HFSP): fan control loop mode
7854 * Supported on almost all ThinkPads
56b6aeb0
HMH		 7855 *
7856 * Fan speed changes of any sort (including those caused by the
7857 * disengaged mode) are usually done slowly by the firmware as the
9ddc5b6f 7858 * maximum amount of fan duty cycle change per second seems to be
56b6aeb0
HMH		 7859 * limited.
7860 *
7861 * Reading is not available if GFAN exists.
7862 * Writing is not available if SFAN exists.
7863 *
7864 * Bits
7865 * 7 automatic mode engaged;
7866 * (default operation mode of the ThinkPad)
7867 * fan level is ignored in this mode.
f51d1a39 7868 * 6 full speed mode (takes precedence over bit 7);
56b6aeb0 7869 * not available on all thinkpads. May disable
f51d1a39
HMH		 7870 * the tachometer while the fan controller ramps up
7871 * the speed (which can take up to a few *minutes*).
7872 * Speeds up fan to 100% duty-cycle, which is far above
7873 * the standard RPM levels. It is not impossible that
7874 * it could cause hardware damage.
56b6aeb0
HMH		 7875 * 5-3 unused in some models. Extra bits for fan level
7876 * in others, but still useless as all values above
7877 * 7 map to the same speed as level 7 in these models.
7878 * 2-0 fan level (0..7 usually)
7879 * 0x00 = stop
7880 * 0x07 = max (set when temperatures critical)
7881 * Some ThinkPads may have other levels, see
efa27145 7882 * TPACPI_FAN_WR_ACPI_FANS (X31/X40/X41)
56b6aeb0
HMH		 7883 *
7884 * FIRMWARE BUG: on some models, EC 0x2f might not be initialized at
b595076a 7885 * boot. Apparently the EC does not initialize it, so unless ACPI DSDT
56b6aeb0
HMH		 7886 * does so, its initial value is meaningless (0x07).
7887 *
7888 * For firmware bugs, refer to:
19206a1e 7889 * https://thinkwiki.org/wiki/Embedded_Controller_Firmware#Firmware_Issues
56b6aeb0
HMH		 7890 *
7891 * ----
7892 *
7893 * ThinkPad EC register 0x84 (LSB), 0x85 (MSB):
7894 * Main fan tachometer reading (in RPM)
7895 *
7896 * This register is present on all ThinkPads with a new-style EC, and
7897 * it is known not to be present on the A21m/e, and T22, as there is
7898 * something else in offset 0x84 according to the ACPI DSDT. Other
7899 * ThinkPads from this same time period (and earlier) probably lack the
7900 * tachometer as well.
7901 *
877d0310 7902 * Unfortunately a lot of ThinkPads with new-style ECs but whose firmware
56b6aeb0
HMH		 7903 * was never fixed by IBM to report the EC firmware version string
7904 * probably support the tachometer (like the early X models), so
7905 * detecting it is quite hard. We need more data to know for sure.
7906 *
7907 * FIRMWARE BUG: always read 0x84 first, otherwise incorrect readings
7908 * might result.
7909 *
f51d1a39
HMH		 7910 * FIRMWARE BUG: may go stale while the EC is switching to full speed
7911 * mode.
56b6aeb0
HMH		 7912 *
7913 * For firmware bugs, refer to:
19206a1e 7914 * https://thinkwiki.org/wiki/Embedded_Controller_Firmware#Firmware_Issues
56b6aeb0 7915 *
d7377247
HMH		 7916 * ----
7917 *
7918 * ThinkPad EC register 0x31 bit 0 (only on select models)
7919 *
7920 * When bit 0 of EC register 0x31 is zero, the tachometer registers
7921 * show the speed of the main fan. When bit 0 of EC register 0x31
7922 * is one, the tachometer registers show the speed of the auxiliary
7923 * fan.
7924 *
7925 * Fan control seems to affect both fans, regardless of the state
7926 * of this bit.
7927 *
7928 * So far, only the firmware for the X60/X61 non-tablet versions
7929 * seem to support this (firmware TP-7M).
7930 *
efa27145 7931 * TPACPI_FAN_WR_ACPI_FANS:
56b6aeb0
HMH		 7932 * ThinkPad X31, X40, X41. Not available in the X60.
7933 *
7934 * FANS ACPI handle: takes three arguments: low speed, medium speed,
7935 * high speed. ACPI DSDT seems to map these three speeds to levels
7936 * as follows: STOP LOW LOW MED MED HIGH HIGH HIGH HIGH
7937 * (this map is stored on FAN0..FAN8 as "0,1,1,2,2,3,3,3,3")
7938 *
7939 * The speeds are stored on handles
7940 * (FANA:FAN9), (FANC:FANB), (FANE:FAND).
7941 *
af901ca1 7942 * There are three default speed sets, accessible as handles:
56b6aeb0
HMH		 7943 * FS1L,FS1M,FS1H; FS2L,FS2M,FS2H; FS3L,FS3M,FS3H
7944 *
7945 * ACPI DSDT switches which set is in use depending on various
7946 * factors.
7947 *
efa27145 7948 * TPACPI_FAN_WR_TPEC is also available and should be used to
56b6aeb0
HMH		 7949 * command the fan. The X31/X40/X41 seems to have 8 fan levels,
7950 * but the ACPI tables just mention level 7.
7951 */
7952
f74a27d4
HMH		 7953enum { /* Fan control constants */
7954 fan_status_offset = 0x2f, /* EC register 0x2f */
7955 fan_rpm_offset = 0x84, /* EC register 0x84: LSB, 0x85 MSB (RPM)
7956 * 0x84 must be read before 0x85 */
d7377247
HMH		 7957 fan_select_offset = 0x31, /* EC register 0x31 (Firmware 7M)
7958 bit 0 selects which fan is active */
f74a27d4
HMH		 7959
7960 TP_EC_FAN_FULLSPEED = 0x40, /* EC fan mode: full speed */
7961 TP_EC_FAN_AUTO = 0x80, /* EC fan mode: auto fan control */
7962
7963 TPACPI_FAN_LAST_LEVEL = 0x100, /* Use cached last-seen fan level */
7964};
7965
7966enum fan_status_access_mode {
7967 TPACPI_FAN_NONE = 0, /* No fan status or control */
7968 TPACPI_FAN_RD_ACPI_GFAN, /* Use ACPI GFAN */
7969 TPACPI_FAN_RD_TPEC, /* Use ACPI EC regs 0x2f, 0x84-0x85 */
7970};
7971
7972enum fan_control_access_mode {
7973 TPACPI_FAN_WR_NONE = 0, /* No fan control */
7974 TPACPI_FAN_WR_ACPI_SFAN, /* Use ACPI SFAN */
7975 TPACPI_FAN_WR_TPEC, /* Use ACPI EC reg 0x2f */
7976 TPACPI_FAN_WR_ACPI_FANS, /* Use ACPI FANS and EC reg 0x2f */
7977};
7978
7979enum fan_control_commands {
7980 TPACPI_FAN_CMD_SPEED = 0x0001, /* speed command */
7981 TPACPI_FAN_CMD_LEVEL = 0x0002, /* level command */
7982 TPACPI_FAN_CMD_ENABLE = 0x0004, /* enable/disable cmd,
7983 * and also watchdog cmd */
7984};
7985
90ab5ee9 7986static bool fan_control_allowed;
f74a27d4 7987
69ba91cb
HMH		 7988static enum fan_status_access_mode fan_status_access_mode;
7989static enum fan_control_access_mode fan_control_access_mode;
7990static enum fan_control_commands fan_control_commands;
78f81cc4 7991
778b4d74 7992static u8 fan_control_initial_status;
fe98a52c 7993static u8 fan_control_desired_level;
0081b162 7994static u8 fan_control_resume_level;
f74a27d4
HMH		 7995static int fan_watchdog_maxinterval;
7996
7997static struct mutex fan_mutex;
778b4d74 7998
25c68a33 7999static void fan_watchdog_fire(struct work_struct *ignored);
25c68a33 8000static DECLARE_DELAYED_WORK(fan_watchdog_task, fan_watchdog_fire);
16663a87 8001
e0c7dfe7
HMH		 8002TPACPI_HANDLE(fans, ec, "FANS"); /* X31, X40, X41 */
8003TPACPI_HANDLE(gfan, ec, "GFAN", /* 570 */
56b6aeb0
HMH		 8004 "\\FSPD", /* 600e/x, 770e, 770x */
8005 ); /* all others */
e0c7dfe7 8006TPACPI_HANDLE(sfan, ec, "SFAN", /* 570 */
56b6aeb0
HMH		 8007 "JFNS", /* 770x-JL */
8008 ); /* all others */
8009
1c2ece75
HMH		 8010/*
8011 * Unitialized HFSP quirk: ACPI DSDT and EC fail to initialize the
8012 * HFSP register at boot, so it contains 0x07 but the Thinkpad could
8013 * be in auto mode (0x80).
8014 *
8015 * This is corrected by any write to HFSP either by the driver, or
8016 * by the firmware.
8017 *
8018 * We assume 0x07 really means auto mode while this quirk is active,
8019 * as this is far more likely than the ThinkPad being in level 7,
8020 * which is only used by the firmware during thermal emergencies.
7d95a3d5
HMH		 8021 *
8022 * Enable for TP-1Y (T43), TP-78 (R51e), TP-76 (R52),
8023 * TP-70 (T43, R52), which are known to be buggy.
1c2ece75
HMH		 8024 */
8025
7d95a3d5 8026static void fan_quirk1_setup(void)
1c2ece75 8027{
1c2ece75 8028 if (fan_control_initial_status == 0x07) {
5cac62ac 8029 pr_notice("fan_init: initial fan status is unknown, assuming it is in auto mode\n");
7d95a3d5 8030 tp_features.fan_ctrl_status_undef = 1;
1c2ece75
HMH		 8031 }
8032}
8033
8034static void fan_quirk1_handle(u8 *fan_status)
8035{
8036 if (unlikely(tp_features.fan_ctrl_status_undef)) {
8037 if (*fan_status != fan_control_initial_status) {
8038 /* something changed the HFSP regisnter since
8039 * driver init time, so it is not undefined
8040 * anymore */
8041 tp_features.fan_ctrl_status_undef = 0;
8042 } else {
8043 /* Return most likely status. In fact, it
8044 * might be the only possible status */
8045 *fan_status = TP_EC_FAN_AUTO;
8046 }
8047 }
8048}
8049
d7377247
HMH		 8050/* Select main fan on X60/X61, NOOP on others */
8051static bool fan_select_fan1(void)
8052{
8053 if (tp_features.second_fan) {
8054 u8 val;
8055
8056 if (ec_read(fan_select_offset, &val) < 0)
8057 return false;
8058 val &= 0xFEU;
8059 if (ec_write(fan_select_offset, val) < 0)
8060 return false;
8061 }
8062 return true;
8063}
8064
8065/* Select secondary fan on X60/X61 */
8066static bool fan_select_fan2(void)
8067{
8068 u8 val;
8069
8070 if (!tp_features.second_fan)
8071 return false;
8072
8073 if (ec_read(fan_select_offset, &val) < 0)
8074 return false;
8075 val |= 0x01U;
8076 if (ec_write(fan_select_offset, val) < 0)
8077 return false;
8078
8079 return true;
8080}
8081
b21a15f6 8082static void fan_update_desired_level(u8 status)
fe98a52c 8083{
38831eaf
TW		 8084 lockdep_assert_held(&fan_mutex);
8085
b21a15f6
HMH		 8086 if ((status &
8087 (TP_EC_FAN_AUTO | TP_EC_FAN_FULLSPEED)) == 0) {
8088 if (status > 7)
8089 fan_control_desired_level = 7;
8090 else
8091 fan_control_desired_level = status;
8092 }
8093}
fe98a52c 8094
b21a15f6
HMH		 8095static int fan_get_status(u8 *status)
8096{
8097 u8 s;
fe98a52c 8098
b21a15f6
HMH		 8099 /* TODO:
8100 * Add TPACPI_FAN_RD_ACPI_FANS ? */
fe98a52c 8101
b21a15f6 8102 switch (fan_status_access_mode) {
eceeb437 8103 case TPACPI_FAN_RD_ACPI_GFAN: {
b21a15f6 8104 /* 570, 600e/x, 770e, 770x */
eceeb437 8105 int res;
fe98a52c 8106
eceeb437 8107 if (unlikely(!acpi_evalf(gfan_handle, &res, NULL, "d")))
b21a15f6 8108 return -EIO;
fe98a52c 8109
b21a15f6 8110 if (likely(status))
eceeb437 8111 *status = res & 0x07;
fe98a52c 8112
b21a15f6 8113 break;
eceeb437 8114 }
b21a15f6
HMH		 8115 case TPACPI_FAN_RD_TPEC:
8116 /* all except 570, 600e/x, 770e, 770x */
8117 if (unlikely(!acpi_ec_read(fan_status_offset, &s)))
8118 return -EIO;
8119
1c2ece75 8120 if (likely(status)) {
b21a15f6 8121 *status = s;
1c2ece75
HMH		 8122 fan_quirk1_handle(status);
8123 }
fe98a52c 8124
fe98a52c 8125 break;
b21a15f6 8126
fe98a52c 8127 default:
b21a15f6 8128 return -ENXIO;
fe98a52c
HMH		 8129 }
8130
b21a15f6
HMH		 8131 return 0;
8132}
fe98a52c 8133
b21a15f6
HMH		 8134static int fan_get_status_safe(u8 *status)
8135{
8136 int rc;
8137 u8 s;
fe98a52c 8138
7646ea88 8139 if (mutex_lock_killable(&fan_mutex))
b21a15f6
HMH		 8140 return -ERESTARTSYS;
8141 rc = fan_get_status(&s);
8142 if (!rc)
8143 fan_update_desired_level(s);
8144 mutex_unlock(&fan_mutex);
fe98a52c 8145
a7718360
DC		 8146 if (rc)
8147 return rc;
b21a15f6
HMH		 8148 if (status)
8149 *status = s;
fe98a52c 8150
a7718360 8151 return 0;
b21a15f6
HMH		 8152}
8153
8154static int fan_get_speed(unsigned int *speed)
fe98a52c 8155{
b21a15f6 8156 u8 hi, lo;
fe98a52c 8157
b21a15f6
HMH		 8158 switch (fan_status_access_mode) {
8159 case TPACPI_FAN_RD_TPEC:
8160 /* all except 570, 600e/x, 770e, 770x */
d7377247
HMH		 8161 if (unlikely(!fan_select_fan1()))
8162 return -EIO;
b21a15f6
HMH		 8163 if (unlikely(!acpi_ec_read(fan_rpm_offset, &lo) ||
8164 !acpi_ec_read(fan_rpm_offset + 1, &hi)))
8165 return -EIO;
fe98a52c 8166
b21a15f6
HMH		 8167 if (likely(speed))
8168 *speed = (hi << 8) | lo;
fe98a52c 8169
b21a15f6 8170 break;
fe98a52c 8171
b21a15f6
HMH		 8172 default:
8173 return -ENXIO;
8174 }
fe98a52c 8175
b21a15f6 8176 return 0;
fe98a52c
HMH		 8177}
8178
d7377247
HMH		 8179static int fan2_get_speed(unsigned int *speed)
8180{
8181 u8 hi, lo;
8182 bool rc;
8183
8184 switch (fan_status_access_mode) {
8185 case TPACPI_FAN_RD_TPEC:
8186 /* all except 570, 600e/x, 770e, 770x */
8187 if (unlikely(!fan_select_fan2()))
8188 return -EIO;
8189 rc = !acpi_ec_read(fan_rpm_offset, &lo) ||
8190 !acpi_ec_read(fan_rpm_offset + 1, &hi);
8191 fan_select_fan1(); /* play it safe */
8192 if (rc)
8193 return -EIO;
8194
8195 if (likely(speed))
8196 *speed = (hi << 8) | lo;
8197
8198 break;
8199
8200 default:
8201 return -ENXIO;
8202 }
8203
8204 return 0;
8205}
8206
b21a15f6 8207static int fan_set_level(int level)
fe98a52c 8208{
b21a15f6
HMH		 8209 if (!fan_control_allowed)
8210 return -EPERM;
fe98a52c 8211
b21a15f6
HMH		 8212 switch (fan_control_access_mode) {
8213 case TPACPI_FAN_WR_ACPI_SFAN:
14232c6e 8214 if ((level < 0) || (level > 7))
b21a15f6 8215 return -EINVAL;
14232c6e
LH		 8216
8217 if (tp_features.second_fan_ctl) {
8218 if (!fan_select_fan2() ||
8219 !acpi_evalf(sfan_handle, NULL, NULL, "vd", level)) {
8220 pr_warn("Couldn't set 2nd fan level, disabling support\n");
8221 tp_features.second_fan_ctl = 0;
8222 }
8223 fan_select_fan1();
8224 }
8225 if (!acpi_evalf(sfan_handle, NULL, NULL, "vd", level))
8226 return -EIO;
b21a15f6 8227 break;
fe98a52c 8228
b21a15f6
HMH		 8229 case TPACPI_FAN_WR_ACPI_FANS:
8230 case TPACPI_FAN_WR_TPEC:
0081b162
HMH		 8231 if (!(level & TP_EC_FAN_AUTO) &&
8232 !(level & TP_EC_FAN_FULLSPEED) &&
b21a15f6
HMH		 8233 ((level < 0) || (level > 7)))
8234 return -EINVAL;
fe98a52c 8235
b21a15f6
HMH		 8236 /* safety net should the EC not support AUTO
8237 * or FULLSPEED mode bits and just ignore them */
8238 if (level & TP_EC_FAN_FULLSPEED)
8239 level |= 7; /* safety min speed 7 */
547266e4 8240 else if (level & TP_EC_FAN_AUTO)
b21a15f6 8241 level |= 4; /* safety min speed 4 */
fe98a52c 8242
14232c6e
LH		 8243 if (tp_features.second_fan_ctl) {
8244 if (!fan_select_fan2() ||
8245 !acpi_ec_write(fan_status_offset, level)) {
8246 pr_warn("Couldn't set 2nd fan level, disabling support\n");
8247 tp_features.second_fan_ctl = 0;
8248 }
8249 fan_select_fan1();
8250
8251 }
b21a15f6
HMH		 8252 if (!acpi_ec_write(fan_status_offset, level))
8253 return -EIO;
8254 else
8255 tp_features.fan_ctrl_status_undef = 0;
8256 break;
fe98a52c 8257
b21a15f6
HMH		 8258 default:
8259 return -ENXIO;
8260 }
74a60c0f
HMH		 8261
8262 vdbg_printk(TPACPI_DBG_FAN,
8263 "fan control: set fan control register to 0x%02x\n", level);
b21a15f6 8264 return 0;
fe98a52c
HMH		 8265}
8266
b21a15f6 8267static int fan_set_level_safe(int level)
fe98a52c 8268{
b21a15f6 8269 int rc;
fe98a52c 8270
b21a15f6
HMH		 8271 if (!fan_control_allowed)
8272 return -EPERM;
fe98a52c 8273
7646ea88 8274 if (mutex_lock_killable(&fan_mutex))
b21a15f6 8275 return -ERESTARTSYS;
fe98a52c 8276
b21a15f6
HMH		 8277 if (level == TPACPI_FAN_LAST_LEVEL)
8278 level = fan_control_desired_level;
fe98a52c 8279
b21a15f6
HMH		 8280 rc = fan_set_level(level);
8281 if (!rc)
8282 fan_update_desired_level(level);
8283
8284 mutex_unlock(&fan_mutex);
8285 return rc;
fe98a52c
HMH		 8286}
8287
b21a15f6 8288static int fan_set_enable(void)
fe98a52c 8289{
b21a15f6
HMH		 8290 u8 s;
8291 int rc;
fe98a52c 8292
ecf2a80a
HMH		 8293 if (!fan_control_allowed)
8294 return -EPERM;
8295
7646ea88 8296 if (mutex_lock_killable(&fan_mutex))
b21a15f6 8297 return -ERESTARTSYS;
fe98a52c 8298
b21a15f6
HMH		 8299 switch (fan_control_access_mode) {
8300 case TPACPI_FAN_WR_ACPI_FANS:
8301 case TPACPI_FAN_WR_TPEC:
8302 rc = fan_get_status(&s);
6060a75e 8303 if (rc)
b21a15f6 8304 break;
fe98a52c 8305
b21a15f6
HMH		 8306 /* Don't go out of emergency fan mode */
8307 if (s != 7) {
8308 s &= 0x07;
8309 s |= TP_EC_FAN_AUTO | 4; /* min fan speed 4 */
8310 }
fe98a52c 8311
b21a15f6
HMH		 8312 if (!acpi_ec_write(fan_status_offset, s))
8313 rc = -EIO;
8314 else {
8315 tp_features.fan_ctrl_status_undef = 0;
8316 rc = 0;
8317 }
8318 break;
fe98a52c 8319
b21a15f6
HMH		 8320 case TPACPI_FAN_WR_ACPI_SFAN:
8321 rc = fan_get_status(&s);
6060a75e 8322 if (rc)
b21a15f6 8323 break;
fe98a52c 8324
b21a15f6 8325 s &= 0x07;
fe98a52c 8326
b21a15f6
HMH		 8327 /* Set fan to at least level 4 */
8328 s |= 4;
fe08bc4b 8329
b21a15f6 8330 if (!acpi_evalf(sfan_handle, NULL, NULL, "vd", s))
35ff8b9f 8331 rc = -EIO;
b21a15f6
HMH		 8332 else
8333 rc = 0;
8334 break;
78f81cc4 8335
b21a15f6
HMH		 8336 default:
8337 rc = -ENXIO;
8338 }
5fba344c 8339
b21a15f6 8340 mutex_unlock(&fan_mutex);
74a60c0f
HMH		 8341
8342 if (!rc)
8343 vdbg_printk(TPACPI_DBG_FAN,
8344 "fan control: set fan control register to 0x%02x\n",
8345 s);
b21a15f6 8346 return rc;
69ba91cb 8347}
78f81cc4 8348
b21a15f6 8349static int fan_set_disable(void)
78f81cc4 8350{
b21a15f6 8351 int rc;
c52f0aa5 8352
b21a15f6
HMH		 8353 if (!fan_control_allowed)
8354 return -EPERM;
78f81cc4 8355
7646ea88 8356 if (mutex_lock_killable(&fan_mutex))
b21a15f6 8357 return -ERESTARTSYS;
3ef8a609 8358
b21a15f6
HMH		 8359 rc = 0;
8360 switch (fan_control_access_mode) {
8361 case TPACPI_FAN_WR_ACPI_FANS:
8362 case TPACPI_FAN_WR_TPEC:
8363 if (!acpi_ec_write(fan_status_offset, 0x00))
8364 rc = -EIO;
8365 else {
8366 fan_control_desired_level = 0;
8367 tp_features.fan_ctrl_status_undef = 0;
8368 }
3ef8a609
HMH		 8369 break;
8370
b21a15f6
HMH		 8371 case TPACPI_FAN_WR_ACPI_SFAN:
8372 if (!acpi_evalf(sfan_handle, NULL, NULL, "vd", 0x00))
8373 rc = -EIO;
8374 else
8375 fan_control_desired_level = 0;
c52f0aa5
HMH		 8376 break;
8377
8378 default:
b21a15f6 8379 rc = -ENXIO;
78f81cc4
BD		 8380 }
8381
74a60c0f
HMH		 8382 if (!rc)
8383 vdbg_printk(TPACPI_DBG_FAN,
8384 "fan control: set fan control register to 0\n");
fe98a52c 8385
fe98a52c 8386 mutex_unlock(&fan_mutex);
fe98a52c
HMH		 8387 return rc;
8388}
8389
b21a15f6 8390static int fan_set_speed(int speed)
c52f0aa5 8391{
b21a15f6 8392 int rc;
c52f0aa5 8393
b21a15f6
HMH		 8394 if (!fan_control_allowed)
8395 return -EPERM;
3ef8a609 8396
7646ea88 8397 if (mutex_lock_killable(&fan_mutex))
b21a15f6 8398 return -ERESTARTSYS;
c52f0aa5 8399
b21a15f6
HMH		 8400 rc = 0;
8401 switch (fan_control_access_mode) {
8402 case TPACPI_FAN_WR_ACPI_FANS:
8403 if (speed >= 0 && speed <= 65535) {
8404 if (!acpi_evalf(fans_handle, NULL, NULL, "vddd",
8405 speed, speed, speed))
8406 rc = -EIO;
8407 } else
8408 rc = -EINVAL;
c52f0aa5
HMH		 8409 break;
8410
8411 default:
b21a15f6 8412 rc = -ENXIO;
c52f0aa5
HMH		 8413 }
8414
b21a15f6
HMH		 8415 mutex_unlock(&fan_mutex);
8416 return rc;
16663a87
HMH		 8417}
8418
8419static void fan_watchdog_reset(void)
8420{
4985cd0a
HMH		 8421 if (fan_control_access_mode == TPACPI_FAN_WR_NONE)
8422 return;
8423
8fef502e 8424 if (fan_watchdog_maxinterval > 0 &&
41f63c53
TH		 8425 tpacpi_lifecycle != TPACPI_LIFE_EXITING)
8426 mod_delayed_work(tpacpi_wq, &fan_watchdog_task,
8427 msecs_to_jiffies(fan_watchdog_maxinterval * 1000));
8428 else
8429 cancel_delayed_work(&fan_watchdog_task);
16663a87
HMH		 8430}
8431
b21a15f6 8432static void fan_watchdog_fire(struct work_struct *ignored)
78f81cc4 8433{
b21a15f6 8434 int rc;
18ad7996 8435
b21a15f6
HMH		 8436 if (tpacpi_lifecycle != TPACPI_LIFE_RUNNING)
8437 return;
a12095c2 8438
0978e012 8439 pr_notice("fan watchdog: enabling fan\n");
b21a15f6
HMH		 8440 rc = fan_set_enable();
8441 if (rc < 0) {
5cac62ac
AS		 8442 pr_err("fan watchdog: error %d while enabling fan, will try again later...\n",
8443 rc);
b21a15f6
HMH		 8444 /* reschedule for later */
8445 fan_watchdog_reset();
8446 }
8447}
eaa7571b 8448
b21a15f6
HMH		 8449/*
8450 * SYSFS fan layout: hwmon compatible (device)
8451 *
8452 * pwm*_enable:
8453 * 0: "disengaged" mode
8454 * 1: manual mode
8455 * 2: native EC "auto" mode (recommended, hardware default)
8456 *
8457 * pwm*: set speed in manual mode, ignored otherwise.
8458 * 0 is level 0; 255 is level 7. Intermediate points done with linear
8459 * interpolation.
8460 *
8461 * fan*_input: tachometer reading, RPM
8462 *
8463 *
8464 * SYSFS fan layout: extensions
8465 *
8466 * fan_watchdog (driver):
8467 * fan watchdog interval in seconds, 0 disables (default), max 120
8468 */
8469
8470/* sysfs fan pwm1_enable ----------------------------------------------- */
8471static ssize_t fan_pwm1_enable_show(struct device *dev,
8472 struct device_attribute *attr,
8473 char *buf)
8474{
8475 int res, mode;
8476 u8 status;
8477
8478 res = fan_get_status_safe(&status);
8479 if (res)
8480 return res;
8481
b21a15f6
HMH		 8482 if (status & TP_EC_FAN_FULLSPEED) {
8483 mode = 0;
8484 } else if (status & TP_EC_FAN_AUTO) {
8485 mode = 2;
8486 } else
8487 mode = 1;
8488
33ce79be 8489 return sysfs_emit(buf, "%d\n", mode);
b21a15f6 8490}
a12095c2 8491
b21a15f6
HMH		 8492static ssize_t fan_pwm1_enable_store(struct device *dev,
8493 struct device_attribute *attr,
8494 const char *buf, size_t count)
8495{
8496 unsigned long t;
8497 int res, level;
8498
8499 if (parse_strtoul(buf, 2, &t))
8500 return -EINVAL;
8501
74a60c0f
HMH		 8502 tpacpi_disclose_usertask("hwmon pwm1_enable",
8503 "set fan mode to %lu\n", t);
8504
b21a15f6
HMH		 8505 switch (t) {
8506 case 0:
8507 level = TP_EC_FAN_FULLSPEED;
8508 break;
8509 case 1:
8510 level = TPACPI_FAN_LAST_LEVEL;
8511 break;
8512 case 2:
8513 level = TP_EC_FAN_AUTO;
8514 break;
8515 case 3:
8516 /* reserved for software-controlled auto mode */
8517 return -ENOSYS;
18ad7996 8518 default:
b21a15f6 8519 return -EINVAL;
18ad7996 8520 }
b21a15f6
HMH		 8521
8522 res = fan_set_level_safe(level);
8523 if (res == -ENXIO)
8524 return -EINVAL;
8525 else if (res < 0)
8526 return res;
8527
8528 fan_watchdog_reset();
8529
8530 return count;
18ad7996
HMH		 8531}
8532
5fb73bc2
BM		 8533static DEVICE_ATTR(pwm1_enable, S_IWUSR | S_IRUGO,
8534 fan_pwm1_enable_show, fan_pwm1_enable_store);
b21a15f6
HMH		 8535
8536/* sysfs fan pwm1 ------------------------------------------------------ */
8537static ssize_t fan_pwm1_show(struct device *dev,
8538 struct device_attribute *attr,
8539 char *buf)
fe98a52c 8540{
b21a15f6
HMH		 8541 int res;
8542 u8 status;
fe98a52c 8543
b21a15f6
HMH		 8544 res = fan_get_status_safe(&status);
8545 if (res)
8546 return res;
ecf2a80a 8547
b21a15f6
HMH		 8548 if ((status &
8549 (TP_EC_FAN_AUTO | TP_EC_FAN_FULLSPEED)) != 0)
8550 status = fan_control_desired_level;
fe98a52c 8551
b21a15f6
HMH		 8552 if (status > 7)
8553 status = 7;
fe98a52c 8554
33ce79be 8555 return sysfs_emit(buf, "%u\n", (status * 255) / 7);
fe98a52c
HMH		 8556}
8557
b21a15f6
HMH		 8558static ssize_t fan_pwm1_store(struct device *dev,
8559 struct device_attribute *attr,
8560 const char *buf, size_t count)
18ad7996 8561{
b21a15f6 8562 unsigned long s;
1c6a334e 8563 int rc;
b21a15f6 8564 u8 status, newlevel;
1c6a334e 8565
b21a15f6
HMH		 8566 if (parse_strtoul(buf, 255, &s))
8567 return -EINVAL;
8568
74a60c0f
HMH		 8569 tpacpi_disclose_usertask("hwmon pwm1",
8570 "set fan speed to %lu\n", s);
8571
b21a15f6
HMH		 8572 /* scale down from 0-255 to 0-7 */
8573 newlevel = (s >> 5) & 0x07;
ecf2a80a 8574
7646ea88 8575 if (mutex_lock_killable(&fan_mutex))
fc589a3c 8576 return -ERESTARTSYS;
40ca9fdf 8577
b21a15f6
HMH		 8578 rc = fan_get_status(&status);
8579 if (!rc && (status &
8580 (TP_EC_FAN_AUTO | TP_EC_FAN_FULLSPEED)) == 0) {
8581 rc = fan_set_level(newlevel);
8582 if (rc == -ENXIO)
8583 rc = -EINVAL;
8584 else if (!rc) {
8585 fan_update_desired_level(newlevel);
8586 fan_watchdog_reset();
eaa7571b 8587 }
b21a15f6 8588 }
1c6a334e 8589
b21a15f6 8590 mutex_unlock(&fan_mutex);
72a979f0 8591 return (rc) ? rc : count;
b21a15f6 8592}
1c6a334e 8593
5fb73bc2 8594static DEVICE_ATTR(pwm1, S_IWUSR | S_IRUGO, fan_pwm1_show, fan_pwm1_store);
1c6a334e 8595
b21a15f6
HMH		 8596/* sysfs fan fan1_input ------------------------------------------------ */
8597static ssize_t fan_fan1_input_show(struct device *dev,
8598 struct device_attribute *attr,
8599 char *buf)
8600{
8601 int res;
8602 unsigned int speed;
1c6a334e 8603
b21a15f6
HMH		 8604 res = fan_get_speed(&speed);
8605 if (res < 0)
8606 return res;
1c6a334e 8607
33ce79be 8608 return sysfs_emit(buf, "%u\n", speed);
b21a15f6 8609}
18ad7996 8610
5fb73bc2 8611static DEVICE_ATTR(fan1_input, S_IRUGO, fan_fan1_input_show, NULL);
40ca9fdf 8612
d7377247
HMH		 8613/* sysfs fan fan2_input ------------------------------------------------ */
8614static ssize_t fan_fan2_input_show(struct device *dev,
8615 struct device_attribute *attr,
8616 char *buf)
8617{
8618 int res;
8619 unsigned int speed;
8620
8621 res = fan2_get_speed(&speed);
8622 if (res < 0)
8623 return res;
8624
33ce79be 8625 return sysfs_emit(buf, "%u\n", speed);
d7377247
HMH		 8626}
8627
5fb73bc2 8628static DEVICE_ATTR(fan2_input, S_IRUGO, fan_fan2_input_show, NULL);
d7377247 8629
b21a15f6 8630/* sysfs fan fan_watchdog (hwmon driver) ------------------------------- */
ac3054c4 8631static ssize_t fan_watchdog_show(struct device_driver *drv, char *buf)
b21a15f6 8632{
33ce79be 8633 return sysfs_emit(buf, "%u\n", fan_watchdog_maxinterval);
18ad7996
HMH		 8634}
8635
ac3054c4
GKH		 8636static ssize_t fan_watchdog_store(struct device_driver *drv, const char *buf,
8637 size_t count)
18ad7996 8638{
b21a15f6
HMH		 8639 unsigned long t;
8640
8641 if (parse_strtoul(buf, 120, &t))
8642 return -EINVAL;
40ca9fdf 8643
ecf2a80a
HMH		 8644 if (!fan_control_allowed)
8645 return -EPERM;
8646
b21a15f6
HMH		 8647 fan_watchdog_maxinterval = t;
8648 fan_watchdog_reset();
40ca9fdf 8649
74a60c0f
HMH		 8650 tpacpi_disclose_usertask("fan_watchdog", "set to %lu\n", t);
8651
b21a15f6
HMH		 8652 return count;
8653}
ac3054c4 8654static DRIVER_ATTR_RW(fan_watchdog);
b21a15f6
HMH		 8655
8656/* --------------------------------------------------------------------- */
79f960e2 8657
b21a15f6 8658static struct attribute *fan_attributes[] = {
79f960e2
LB		 8659 &dev_attr_pwm1_enable.attr,
8660 &dev_attr_pwm1.attr,
5fb73bc2 8661 &dev_attr_fan1_input.attr,
79f960e2 8662 &dev_attr_fan2_input.attr,
b21a15f6
HMH		 8663 NULL
8664};
8665
79f960e2
LB		 8666static umode_t fan_attr_is_visible(struct kobject *kobj, struct attribute *attr,
8667 int n)
8668{
8669 if (fan_status_access_mode == TPACPI_FAN_NONE &&
8670 fan_control_access_mode == TPACPI_FAN_WR_NONE)
8671 return 0;
8672
8673 if (attr == &dev_attr_fan2_input.attr) {
8674 if (!tp_features.second_fan)
8675 return 0;
8676 }
8677
8678 return attr->mode;
8679}
8680
b21a15f6 8681static const struct attribute_group fan_attr_group = {
79f960e2 8682 .is_visible = fan_attr_is_visible,
b21a15f6
HMH		 8683 .attrs = fan_attributes,
8684};
8685
5cd68968
HG		 8686static struct attribute *fan_driver_attributes[] = {
8687 &driver_attr_fan_watchdog.attr,
8688 NULL
8689};
8690
8691static const struct attribute_group fan_driver_attr_group = {
8692 .is_visible = fan_attr_is_visible,
8693 .attrs = fan_driver_attributes,
8694};
8695
b288420e
AK		 8696#define TPACPI_FAN_Q1 0x0001 /* Uninitialized HFSP */
8697#define TPACPI_FAN_2FAN 0x0002 /* EC 0x31 bit 0 selects fan2 */
8698#define TPACPI_FAN_2CTL 0x0004 /* selects fan2 control */
8699#define TPACPI_FAN_NOFAN 0x0008 /* no fan available */
7d95a3d5 8700
7d95a3d5 8701static const struct tpacpi_quirk fan_quirk_table[] __initconst = {
599eefff
JW		 8702 TPACPI_QEC_IBM('1', 'Y', TPACPI_FAN_Q1),
8703 TPACPI_QEC_IBM('7', '8', TPACPI_FAN_Q1),
8704 TPACPI_QEC_IBM('7', '6', TPACPI_FAN_Q1),
8705 TPACPI_QEC_IBM('7', '0', TPACPI_FAN_Q1),
8706 TPACPI_QEC_LNV('7', 'M', TPACPI_FAN_2FAN),
8707 TPACPI_Q_LNV('N', '1', TPACPI_FAN_2FAN),
14232c6e
LH		 8708 TPACPI_Q_LNV3('N', '1', 'D', TPACPI_FAN_2CTL), /* P70 */
8709 TPACPI_Q_LNV3('N', '1', 'E', TPACPI_FAN_2CTL), /* P50 */
8710 TPACPI_Q_LNV3('N', '1', 'T', TPACPI_FAN_2CTL), /* P71 */
8711 TPACPI_Q_LNV3('N', '1', 'U', TPACPI_FAN_2CTL), /* P51 */
8712 TPACPI_Q_LNV3('N', '2', 'C', TPACPI_FAN_2CTL), /* P52 / P72 */
c47c0429 8713 TPACPI_Q_LNV3('N', '2', 'N', TPACPI_FAN_2CTL), /* P53 / P73 */
14232c6e
LH		 8714 TPACPI_Q_LNV3('N', '2', 'E', TPACPI_FAN_2CTL), /* P1 / X1 Extreme (1st gen) */
8715 TPACPI_Q_LNV3('N', '2', 'O', TPACPI_FAN_2CTL), /* P1 / X1 Extreme (2nd gen) */
e8637dfc 8716 TPACPI_Q_LNV3('N', '3', '0', TPACPI_FAN_2CTL), /* P15 (1st gen) / P15v (1st gen) */
868d7618 8717 TPACPI_Q_LNV3('N', '3', '7', TPACPI_FAN_2CTL), /* T15g (2nd gen) */
b288420e 8718 TPACPI_Q_LNV3('N', '1', 'O', TPACPI_FAN_NOFAN), /* X1 Tablet (2nd gen) */
7d95a3d5
HMH		 8719};
8720
b21a15f6
HMH		 8721static int __init fan_init(struct ibm_init_struct *iibm)
8722{
7d95a3d5 8723 unsigned long quirks;
b21a15f6 8724
74a60c0f
HMH		 8725 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_FAN,
8726 "initializing fan subdriver\n");
b21a15f6
HMH		 8727
8728 mutex_init(&fan_mutex);
8729 fan_status_access_mode = TPACPI_FAN_NONE;
8730 fan_control_access_mode = TPACPI_FAN_WR_NONE;
8731 fan_control_commands = 0;
8732 fan_watchdog_maxinterval = 0;
8733 tp_features.fan_ctrl_status_undef = 0;
d7377247 8734 tp_features.second_fan = 0;
14232c6e 8735 tp_features.second_fan_ctl = 0;
b21a15f6
HMH		 8736 fan_control_desired_level = 7;
8737
e28393c0
HMH		 8738 if (tpacpi_is_ibm()) {
8739 TPACPI_ACPIHANDLE_INIT(fans);
8740 TPACPI_ACPIHANDLE_INIT(gfan);
8741 TPACPI_ACPIHANDLE_INIT(sfan);
8742 }
b21a15f6 8743
7d95a3d5
HMH		 8744 quirks = tpacpi_check_quirks(fan_quirk_table,
8745 ARRAY_SIZE(fan_quirk_table));
8746
b288420e
AK		 8747 if (quirks & TPACPI_FAN_NOFAN) {
8748 pr_info("No integrated ThinkPad fan available\n");
8749 return -ENODEV;
8750 }
8751
b21a15f6
HMH		 8752 if (gfan_handle) {
8753 /* 570, 600e/x, 770e, 770x */
8754 fan_status_access_mode = TPACPI_FAN_RD_ACPI_GFAN;
8755 } else {
8756 /* all other ThinkPads: note that even old-style
8757 * ThinkPad ECs supports the fan control register */
8758 if (likely(acpi_ec_read(fan_status_offset,
8759 &fan_control_initial_status))) {
bf779aaf
MP		 8760 int res;
8761 unsigned int speed;
8762
b21a15f6 8763 fan_status_access_mode = TPACPI_FAN_RD_TPEC;
7d95a3d5
HMH		 8764 if (quirks & TPACPI_FAN_Q1)
8765 fan_quirk1_setup();
bf779aaf 8766 /* Try and probe the 2nd fan */
aa2fef6f 8767 tp_features.second_fan = 1; /* needed for get_speed to work */
bf779aaf 8768 res = fan2_get_speed(&speed);
a10d5098 8769 if (res >= 0 && speed != FAN_NOT_PRESENT) {
bf779aaf
MP		 8770 /* It responded - so let's assume it's there */
8771 tp_features.second_fan = 1;
8772 tp_features.second_fan_ctl = 1;
8773 pr_info("secondary fan control detected & enabled\n");
aa2fef6f
MP		 8774 } else {
8775 /* Fan not auto-detected */
8776 tp_features.second_fan = 0;
8777 if (quirks & TPACPI_FAN_2FAN) {
8778 tp_features.second_fan = 1;
8779 pr_info("secondary fan support enabled\n");
8780 }
8781 if (quirks & TPACPI_FAN_2CTL) {
8782 tp_features.second_fan = 1;
8783 tp_features.second_fan_ctl = 1;
8784 pr_info("secondary fan control enabled\n");
8785 }
bf779aaf 8786 }
b21a15f6 8787 } else {
5cac62ac 8788 pr_err("ThinkPad ACPI EC access misbehaving, fan status and control unavailable\n");
c7e1c782 8789 return -ENODEV;
b21a15f6
HMH		 8790 }
8791 }
8792
8793 if (sfan_handle) {
8794 /* 570, 770x-JL */
8795 fan_control_access_mode = TPACPI_FAN_WR_ACPI_SFAN;
8796 fan_control_commands |=
8797 TPACPI_FAN_CMD_LEVEL | TPACPI_FAN_CMD_ENABLE;
8798 } else {
8799 if (!gfan_handle) {
8800 /* gfan without sfan means no fan control */
8801 /* all other models implement TP EC 0x2f control */
8802
8803 if (fans_handle) {
8804 /* X31, X40, X41 */
8805 fan_control_access_mode =
8806 TPACPI_FAN_WR_ACPI_FANS;
8807 fan_control_commands |=
8808 TPACPI_FAN_CMD_SPEED |
8809 TPACPI_FAN_CMD_LEVEL |
8810 TPACPI_FAN_CMD_ENABLE;
8811 } else {
8812 fan_control_access_mode = TPACPI_FAN_WR_TPEC;
8813 fan_control_commands |=
8814 TPACPI_FAN_CMD_LEVEL |
8815 TPACPI_FAN_CMD_ENABLE;
8816 }
fe98a52c 8817 }
b21a15f6 8818 }
18ad7996 8819
74a60c0f
HMH		 8820 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_FAN,
8821 "fan is %s, modes %d, %d\n",
b21a15f6
HMH		 8822 str_supported(fan_status_access_mode != TPACPI_FAN_NONE ||
8823 fan_control_access_mode != TPACPI_FAN_WR_NONE),
8824 fan_status_access_mode, fan_control_access_mode);
1c6a334e 8825
b21a15f6
HMH		 8826 /* fan control master switch */
8827 if (!fan_control_allowed) {
8828 fan_control_access_mode = TPACPI_FAN_WR_NONE;
8829 fan_control_commands = 0;
74a60c0f 8830 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_FAN,
b21a15f6 8831 "fan control features disabled by parameter\n");
18ad7996 8832 }
40ca9fdf 8833
b21a15f6
HMH		 8834 /* update fan_control_desired_level */
8835 if (fan_status_access_mode != TPACPI_FAN_NONE)
8836 fan_get_status_safe(NULL);
fe98a52c 8837
c7e1c782
HG		 8838 if (fan_status_access_mode == TPACPI_FAN_NONE &&
8839 fan_control_access_mode == TPACPI_FAN_WR_NONE)
8840 return -ENODEV;
9c0a76e1 8841
c7e1c782 8842 return 0;
56b6aeb0
HMH		 8843}
8844
b21a15f6 8845static void fan_exit(void)
56b6aeb0 8846{
74a60c0f 8847 vdbg_printk(TPACPI_DBG_EXIT | TPACPI_DBG_FAN,
35ff8b9f 8848 "cancelling any pending fan watchdog tasks\n");
56b6aeb0 8849
b21a15f6 8850 cancel_delayed_work(&fan_watchdog_task);
e0e3c061 8851 flush_workqueue(tpacpi_wq);
56b6aeb0
HMH		 8852}
8853
fd3c3a42 8854static void fan_suspend(void)
75700e53 8855{
0081b162
HMH		 8856 int rc;
8857
75700e53
HMH		 8858 if (!fan_control_allowed)
8859 return;
8860
8861 /* Store fan status in cache */
0081b162
HMH		 8862 fan_control_resume_level = 0;
8863 rc = fan_get_status_safe(&fan_control_resume_level);
6060a75e 8864 if (rc)
5cac62ac
AS		 8865 pr_notice("failed to read fan level for later restore during resume: %d\n",
8866 rc);
0081b162
HMH		 8867
8868 /* if it is undefined, don't attempt to restore it.
8869 * KEEP THIS LAST */
75700e53 8870 if (tp_features.fan_ctrl_status_undef)
0081b162 8871 fan_control_resume_level = 0;
75700e53
HMH		 8872}
8873
8874static void fan_resume(void)
8875{
75700e53
HMH		 8876 u8 current_level = 7;
8877 bool do_set = false;
0081b162 8878 int rc;
75700e53
HMH		 8879
8880 /* DSDT *always* updates status on resume */
8881 tp_features.fan_ctrl_status_undef = 0;
8882
75700e53 8883 if (!fan_control_allowed ||
0081b162 8884 !fan_control_resume_level ||
6060a75e 8885 fan_get_status_safe(&current_level))
75700e53
HMH		 8886 return;
8887
8888 switch (fan_control_access_mode) {
8889 case TPACPI_FAN_WR_ACPI_SFAN:
0081b162
HMH		 8890 /* never decrease fan level */
8891 do_set = (fan_control_resume_level > current_level);
75700e53
HMH		 8892 break;
8893 case TPACPI_FAN_WR_ACPI_FANS:
8894 case TPACPI_FAN_WR_TPEC:
0081b162
HMH		 8895 /* never decrease fan level, scale is:
8896 * TP_EC_FAN_FULLSPEED > 7 >= TP_EC_FAN_AUTO
8897 *
8898 * We expect the firmware to set either 7 or AUTO, but we
8899 * handle FULLSPEED out of paranoia.
8900 *
8901 * So, we can safely only restore FULLSPEED or 7, anything
8902 * else could slow the fan. Restoring AUTO is useless, at
8903 * best that's exactly what the DSDT already set (it is the
8904 * slower it uses).
8905 *
8906 * Always keep in mind that the DSDT *will* have set the
8907 * fans to what the vendor supposes is the best level. We
8908 * muck with it only to speed the fan up.
8909 */
8910 if (fan_control_resume_level != 7 &&
8911 !(fan_control_resume_level & TP_EC_FAN_FULLSPEED))
8912 return;
8913 else
8914 do_set = !(current_level & TP_EC_FAN_FULLSPEED) &&
8915 (current_level != fan_control_resume_level);
75700e53
HMH		 8916 break;
8917 default:
8918 return;
8919 }
8920 if (do_set) {
0978e012
JP		 8921 pr_notice("restoring fan level to 0x%02x\n",
8922 fan_control_resume_level);
0081b162
HMH		 8923 rc = fan_set_level_safe(fan_control_resume_level);
8924 if (rc < 0)
0978e012 8925 pr_notice("failed to restore fan level: %d\n", rc);
75700e53
HMH		 8926 }
8927}
8928
887965e6 8929static int fan_read(struct seq_file *m)
56b6aeb0 8930{
56b6aeb0
HMH		 8931 int rc;
8932 u8 status;
8933 unsigned int speed = 0;
8934
8935 switch (fan_status_access_mode) {
efa27145 8936 case TPACPI_FAN_RD_ACPI_GFAN:
56b6aeb0 8937 /* 570, 600e/x, 770e, 770x */
35ff8b9f 8938 rc = fan_get_status_safe(&status);
6060a75e 8939 if (rc)
56b6aeb0
HMH		 8940 return rc;
8941
887965e6 8942 seq_printf(m, "status:\t\t%s\n"
56b6aeb0 8943 "level:\t\t%d\n",
664607f5 8944 str_enabled_disabled(status), status);
56b6aeb0
HMH		 8945 break;
8946
efa27145 8947 case TPACPI_FAN_RD_TPEC:
56b6aeb0 8948 /* all except 570, 600e/x, 770e, 770x */
35ff8b9f 8949 rc = fan_get_status_safe(&status);
6060a75e 8950 if (rc)
56b6aeb0
HMH		 8951 return rc;
8952
664607f5 8953 seq_printf(m, "status:\t\t%s\n", str_enabled_disabled(status));
56b6aeb0 8954
35ff8b9f
HMH		 8955 rc = fan_get_speed(&speed);
8956 if (rc < 0)
56b6aeb0
HMH		 8957 return rc;
8958
887965e6 8959 seq_printf(m, "speed:\t\t%d\n", speed);
56b6aeb0 8960
efa27145 8961 if (status & TP_EC_FAN_FULLSPEED)
56b6aeb0 8962 /* Disengaged mode takes precedence */
887965e6 8963 seq_printf(m, "level:\t\tdisengaged\n");
efa27145 8964 else if (status & TP_EC_FAN_AUTO)
887965e6 8965 seq_printf(m, "level:\t\tauto\n");
56b6aeb0 8966 else
887965e6 8967 seq_printf(m, "level:\t\t%d\n", status);
56b6aeb0
HMH		 8968 break;
8969
efa27145 8970 case TPACPI_FAN_NONE:
56b6aeb0 8971 default:
887965e6 8972 seq_printf(m, "status:\t\tnot supported\n");
56b6aeb0
HMH		 8973 }
8974
efa27145 8975 if (fan_control_commands & TPACPI_FAN_CMD_LEVEL) {
887965e6 8976 seq_printf(m, "commands:\tlevel <level>");
56b6aeb0
HMH		 8977
8978 switch (fan_control_access_mode) {
efa27145 8979 case TPACPI_FAN_WR_ACPI_SFAN:
887965e6 8980 seq_printf(m, " (<level> is 0-7)\n");
56b6aeb0
HMH		 8981 break;
8982
8983 default:
5cac62ac 8984 seq_printf(m, " (<level> is 0-7, auto, disengaged, full-speed)\n");
56b6aeb0
HMH		 8985 break;
8986 }
8987 }
18ad7996 8988
efa27145 8989 if (fan_control_commands & TPACPI_FAN_CMD_ENABLE)
887965e6 8990 seq_printf(m, "commands:\tenable, disable\n"
5cac62ac 8991 "commands:\twatchdog <timeout> (<timeout> is 0 (off), 1-120 (seconds))\n");
1da177e4 8992
efa27145 8993 if (fan_control_commands & TPACPI_FAN_CMD_SPEED)
5cac62ac 8994 seq_printf(m, "commands:\tspeed <speed> (<speed> is 0-65535)\n");
56b6aeb0 8995
887965e6 8996 return 0;
78f81cc4
BD		 8997}
8998
18ad7996
HMH		 8999static int fan_write_cmd_level(const char *cmd, int *rc)
9000{
9001 int level;
9002
26217796 9003 if (strstarts(cmd, "level auto"))
efa27145 9004 level = TP_EC_FAN_AUTO;
26217796 9005 else if (strstarts(cmd, "level disengaged") || strstarts(cmd, "level full-speed"))
efa27145 9006 level = TP_EC_FAN_FULLSPEED;
a12095c2 9007 else if (sscanf(cmd, "level %d", &level) != 1)
18ad7996
HMH		 9008 return 0;
9009
35ff8b9f
HMH		 9010 *rc = fan_set_level_safe(level);
9011 if (*rc == -ENXIO)
0978e012
JP		 9012 pr_err("level command accepted for unsupported access mode %d\n",
9013 fan_control_access_mode);
74a60c0f
HMH		 9014 else if (!*rc)
9015 tpacpi_disclose_usertask("procfs fan",
9016 "set level to %d\n", level);
18ad7996
HMH		 9017
9018 return 1;
9019}
9020
9021static int fan_write_cmd_enable(const char *cmd, int *rc)
9022{
26217796 9023 if (!strstarts(cmd, "enable"))
18ad7996
HMH		 9024 return 0;
9025
35ff8b9f
HMH		 9026 *rc = fan_set_enable();
9027 if (*rc == -ENXIO)
0978e012
JP		 9028 pr_err("enable command accepted for unsupported access mode %d\n",
9029 fan_control_access_mode);
74a60c0f
HMH		 9030 else if (!*rc)
9031 tpacpi_disclose_usertask("procfs fan", "enable\n");
18ad7996
HMH		 9032
9033 return 1;
9034}
9035
9036static int fan_write_cmd_disable(const char *cmd, int *rc)
9037{
26217796 9038 if (!strstarts(cmd, "disable"))
18ad7996
HMH		 9039 return 0;
9040
35ff8b9f
HMH		 9041 *rc = fan_set_disable();
9042 if (*rc == -ENXIO)
0978e012
JP		 9043 pr_err("disable command accepted for unsupported access mode %d\n",
9044 fan_control_access_mode);
74a60c0f
HMH		 9045 else if (!*rc)
9046 tpacpi_disclose_usertask("procfs fan", "disable\n");
18ad7996
HMH		 9047
9048 return 1;
9049}
9050
9051static int fan_write_cmd_speed(const char *cmd, int *rc)
9052{
9053 int speed;
9054
a8b7a662
HMH		 9055 /* TODO:
9056 * Support speed <low> <medium> <high> ? */
9057
18ad7996
HMH		 9058 if (sscanf(cmd, "speed %d", &speed) != 1)
9059 return 0;
9060
35ff8b9f
HMH		 9061 *rc = fan_set_speed(speed);
9062 if (*rc == -ENXIO)
0978e012
JP		 9063 pr_err("speed command accepted for unsupported access mode %d\n",
9064 fan_control_access_mode);
74a60c0f
HMH		 9065 else if (!*rc)
9066 tpacpi_disclose_usertask("procfs fan",
9067 "set speed to %d\n", speed);
18ad7996
HMH		 9068
9069 return 1;
9070}
9071
16663a87
HMH		 9072static int fan_write_cmd_watchdog(const char *cmd, int *rc)
9073{
9074 int interval;
9075
9076 if (sscanf(cmd, "watchdog %d", &interval) != 1)
9077 return 0;
9078
9079 if (interval < 0 || interval > 120)
9080 *rc = -EINVAL;
74a60c0f 9081 else {
16663a87 9082 fan_watchdog_maxinterval = interval;
74a60c0f
HMH		 9083 tpacpi_disclose_usertask("procfs fan",
9084 "set watchdog timer to %d\n",
9085 interval);
9086 }
16663a87
HMH		 9087
9088 return 1;
9089}
9090
18ad7996
HMH		 9091static int fan_write(char *buf)
9092{
9093 char *cmd;
9094 int rc = 0;
9095
be51bd45 9096 while (!rc && (cmd = strsep(&buf, ","))) {
efa27145 9097 if (!((fan_control_commands & TPACPI_FAN_CMD_LEVEL) &&
18ad7996 9098 fan_write_cmd_level(cmd, &rc)) &&
efa27145 9099 !((fan_control_commands & TPACPI_FAN_CMD_ENABLE) &&
18ad7996 9100 (fan_write_cmd_enable(cmd, &rc) ||
16663a87
HMH		 9101 fan_write_cmd_disable(cmd, &rc) ||
9102 fan_write_cmd_watchdog(cmd, &rc))) &&
efa27145 9103 !((fan_control_commands & TPACPI_FAN_CMD_SPEED) &&
18ad7996
HMH		 9104 fan_write_cmd_speed(cmd, &rc))
9105 )
9106 rc = -EINVAL;
16663a87
HMH		 9107 else if (!rc)
9108 fan_watchdog_reset();
18ad7996
HMH		 9109 }
9110
9111 return rc;
9112}
9113
a5763f22
HMH		 9114static struct ibm_struct fan_driver_data = {
9115 .name = "fan",
9116 .read = fan_read,
9117 .write = fan_write,
9118 .exit = fan_exit,
75700e53
HMH		 9119 .suspend = fan_suspend,
9120 .resume = fan_resume,
a5763f22
HMH		 9121};
9122
420f9739
DH		 9123/*************************************************************************
9124 * Mute LED subdriver
9125 */
9126
9e908a18 9127#define TPACPI_LED_MAX 2
420f9739
DH		 9128
9129struct tp_led_table {
9130 acpi_string name;
9131 int on_value;
9132 int off_value;
9133 int state;
9134};
9135
9e908a18
TI		 9136static struct tp_led_table led_tables[TPACPI_LED_MAX] = {
9137 [LED_AUDIO_MUTE] = {
420f9739
DH		 9138 .name = "SSMS",
9139 .on_value = 1,
9140 .off_value = 0,
9141 },
9e908a18 9142 [LED_AUDIO_MICMUTE] = {
420f9739
DH		 9143 .name = "MMTS",
9144 .on_value = 2,
9145 .off_value = 0,
9146 },
9147};
9148
9149static int mute_led_on_off(struct tp_led_table *t, bool state)
9150{
9151 acpi_handle temp;
9152 int output;
9153
3526ecad 9154 if (ACPI_FAILURE(acpi_get_handle(hkey_handle, t->name, &temp))) {
420f9739
DH		 9155 pr_warn("Thinkpad ACPI has no %s interface.\n", t->name);
9156 return -EIO;
9157 }
9158
9159 if (!acpi_evalf(hkey_handle, &output, t->name, "dd",
9160 state ? t->on_value : t->off_value))
9161 return -EIO;
9162
9163 t->state = state;
9164 return state;
9165}
9166
9e908a18 9167static int tpacpi_led_set(int whichled, bool on)
420f9739
DH		 9168{
9169 struct tp_led_table *t;
9170
420f9739
DH		 9171 t = &led_tables[whichled];
9172 if (t->state < 0 || t->state == on)
9173 return t->state;
9174 return mute_led_on_off(t, on);
9175}
420f9739 9176
4e1d0924
TI		 9177static int tpacpi_led_mute_set(struct led_classdev *led_cdev,
9178 enum led_brightness brightness)
9179{
9e908a18 9180 return tpacpi_led_set(LED_AUDIO_MUTE, brightness != LED_OFF);
4e1d0924
TI		 9181}
9182
9183static int tpacpi_led_micmute_set(struct led_classdev *led_cdev,
9184 enum led_brightness brightness)
9185{
9e908a18 9186 return tpacpi_led_set(LED_AUDIO_MICMUTE, brightness != LED_OFF);
4e1d0924
TI		 9187}
9188
9e908a18
TI		 9189static struct led_classdev mute_led_cdev[TPACPI_LED_MAX] = {
9190 [LED_AUDIO_MUTE] = {
4e1d0924
TI		 9191 .name = "platform::mute",
9192 .max_brightness = 1,
9193 .brightness_set_blocking = tpacpi_led_mute_set,
9194 .default_trigger = "audio-mute",
9195 },
9e908a18 9196 [LED_AUDIO_MICMUTE] = {
4e1d0924
TI		 9197 .name = "platform::micmute",
9198 .max_brightness = 1,
9199 .brightness_set_blocking = tpacpi_led_micmute_set,
9200 .default_trigger = "audio-micmute",
9201 },
9202};
420f9739
DH		 9203
9204static int mute_led_init(struct ibm_init_struct *iibm)
9205{
9206 acpi_handle temp;
4e1d0924 9207 int i, err;
420f9739
DH		 9208
9209 for (i = 0; i < TPACPI_LED_MAX; i++) {
9210 struct tp_led_table *t = &led_tables[i];
4e1d0924 9211 if (ACPI_FAILURE(acpi_get_handle(hkey_handle, t->name, &temp))) {
420f9739 9212 t->state = -ENODEV;
4e1d0924
TI		 9213 continue;
9214 }
9215
9e908a18 9216 mute_led_cdev[i].brightness = ledtrig_audio_get(i);
4e1d0924
TI		 9217 err = led_classdev_register(&tpacpi_pdev->dev, &mute_led_cdev[i]);
9218 if (err < 0) {
41f80046
AS		 9219 while (i--)
9220 led_classdev_unregister(&mute_led_cdev[i]);
4e1d0924
TI		 9221 return err;
9222 }
420f9739
DH		 9223 }
9224 return 0;
9225}
9226
9227static void mute_led_exit(void)
9228{
9229 int i;
9230
4e1d0924 9231 for (i = 0; i < TPACPI_LED_MAX; i++) {
41f80046
AS		 9232 led_classdev_unregister(&mute_led_cdev[i]);
9233 tpacpi_led_set(i, false);
4e1d0924 9234 }
420f9739
DH		 9235}
9236
119f4498
TI		 9237static void mute_led_resume(void)
9238{
9239 int i;
9240
9241 for (i = 0; i < TPACPI_LED_MAX; i++) {
9242 struct tp_led_table *t = &led_tables[i];
9243 if (t->state >= 0)
9244 mute_led_on_off(t, t->state);
9245 }
9246}
9247
420f9739
DH		 9248static struct ibm_struct mute_led_driver_data = {
9249 .name = "mute_led",
9250 .exit = mute_led_exit,
119f4498 9251 .resume = mute_led_resume,
420f9739
DH		 9252};
9253
2801b968
OG		 9254/*
9255 * Battery Wear Control Driver
9256 * Contact: Ognjen Galic <smclt30p@gmail.com>
9257 */
9258
9259/* Metadata */
9260
9261#define GET_START "BCTG"
9262#define SET_START "BCCS"
9263#define GET_STOP "BCSG"
9264#define SET_STOP "BCSS"
b55d416d
TW		 9265#define GET_DISCHARGE "BDSG"
9266#define SET_DISCHARGE "BDSS"
400cffd5
TW		 9267#define GET_INHIBIT "BICG"
9268#define SET_INHIBIT "BICS"
2801b968 9269
2801b968
OG		 9270enum {
9271 BAT_ANY = 0,
9272 BAT_PRIMARY = 1,
9273 BAT_SECONDARY = 2
9274};
9275
9276enum {
9277 /* Error condition bit */
9278 METHOD_ERR = BIT(31),
9279};
9280
9281enum {
9282 /* This is used in the get/set helpers */
9283 THRESHOLD_START,
9284 THRESHOLD_STOP,
b55d416d 9285 FORCE_DISCHARGE,
400cffd5 9286 INHIBIT_CHARGE,
2801b968
OG		 9287};
9288
9289struct tpacpi_battery_data {
9290 int charge_start;
9291 int start_support;
9292 int charge_stop;
9293 int stop_support;
b55d416d 9294 unsigned int charge_behaviours;
2801b968
OG		 9295};
9296
9297struct tpacpi_battery_driver_data {
9298 struct tpacpi_battery_data batteries[3];
9299 int individual_addressing;
9300};
9301
9302static struct tpacpi_battery_driver_data battery_info;
9303
9304/* ACPI helpers/functions/probes */
9305
9306/**
9307 * This evaluates a ACPI method call specific to the battery
9308 * ACPI extension. The specifics are that an error is marked
9309 * in the 32rd bit of the response, so we just check that here.
9310 */
9311static acpi_status tpacpi_battery_acpi_eval(char *method, int *ret, int param)
9312{
9313 int response;
9314
9315 if (!acpi_evalf(hkey_handle, &response, method, "dd", param)) {
9316 acpi_handle_err(hkey_handle, "%s: evaluate failed", method);
9317 return AE_ERROR;
9318 }
9319 if (response & METHOD_ERR) {
9320 acpi_handle_err(hkey_handle,
9321 "%s evaluated but flagged as error", method);
9322 return AE_ERROR;
9323 }
9324 *ret = response;
9325 return AE_OK;
9326}
9327
9328static int tpacpi_battery_get(int what, int battery, int *ret)
9329{
9330 switch (what) {
9331 case THRESHOLD_START:
9332 if ACPI_FAILURE(tpacpi_battery_acpi_eval(GET_START, ret, battery))
9333 return -ENODEV;
9334
9335 /* The value is in the low 8 bits of the response */
9336 *ret = *ret & 0xFF;
9337 return 0;
9338 case THRESHOLD_STOP:
9339 if ACPI_FAILURE(tpacpi_battery_acpi_eval(GET_STOP, ret, battery))
9340 return -ENODEV;
9341 /* Value is in lower 8 bits */
9342 *ret = *ret & 0xFF;
9343 /*
9344 * On the stop value, if we return 0 that
9345 * does not make any sense. 0 means Default, which
9346 * means that charging stops at 100%, so we return
9347 * that.
9348 */
9349 if (*ret == 0)
9350 *ret = 100;
9351 return 0;
b55d416d
TW		 9352 case FORCE_DISCHARGE:
9353 if ACPI_FAILURE(tpacpi_battery_acpi_eval(GET_DISCHARGE, ret, battery))
9354 return -ENODEV;
9355 /* The force discharge status is in bit 0 */
9356 *ret = *ret & 0x01;
9357 return 0;
400cffd5
TW		 9358 case INHIBIT_CHARGE:
9359 if ACPI_FAILURE(tpacpi_battery_acpi_eval(GET_INHIBIT, ret, battery))
9360 return -ENODEV;
9361 /* The inhibit charge status is in bit 0 */
9362 *ret = *ret & 0x01;
9363 return 0;
2801b968
OG		 9364 default:
9365 pr_crit("wrong parameter: %d", what);
9366 return -EINVAL;
9367 }
9368}
9369
9370static int tpacpi_battery_set(int what, int battery, int value)
9371{
9372 int param, ret;
9373 /* The first 8 bits are the value of the threshold */
9374 param = value;
9375 /* The battery ID is in bits 8-9, 2 bits */
9376 param |= battery << 8;
9377
9378 switch (what) {
9379 case THRESHOLD_START:
9380 if ACPI_FAILURE(tpacpi_battery_acpi_eval(SET_START, &ret, param)) {
9381 pr_err("failed to set charge threshold on battery %d",
9382 battery);
9383 return -ENODEV;
9384 }
9385 return 0;
9386 case THRESHOLD_STOP:
9387 if ACPI_FAILURE(tpacpi_battery_acpi_eval(SET_STOP, &ret, param)) {
9388 pr_err("failed to set stop threshold: %d", battery);
9389 return -ENODEV;
9390 }
9391 return 0;
b55d416d
TW		 9392 case FORCE_DISCHARGE:
9393 /* Force discharge is in bit 0,
9394 * break on AC attach is in bit 1 (won't work on some ThinkPads),
9395 * battery ID is in bits 8-9, 2 bits.
9396 */
9397 if (ACPI_FAILURE(tpacpi_battery_acpi_eval(SET_DISCHARGE, &ret, param))) {
9398 pr_err("failed to set force discharge on %d", battery);
9399 return -ENODEV;
9400 }
9401 return 0;
400cffd5
TW		 9402 case INHIBIT_CHARGE:
9403 /* When setting inhibit charge, we set a default value of
9404 * always breaking on AC detach and the effective time is set to
9405 * be permanent.
9406 * The battery ID is in bits 4-5, 2 bits,
9407 * the effective time is in bits 8-23, 2 bytes.
9408 * A time of FFFF indicates forever.
9409 */
9410 param = value;
9411 param |= battery << 4;
9412 param |= 0xFFFF << 8;
9413 if (ACPI_FAILURE(tpacpi_battery_acpi_eval(SET_INHIBIT, &ret, param))) {
9414 pr_err("failed to set inhibit charge on %d", battery);
9415 return -ENODEV;
9416 }
9417 return 0;
2801b968
OG		 9418 default:
9419 pr_crit("wrong parameter: %d", what);
9420 return -EINVAL;
9421 }
9422}
9423
b55d416d
TW		 9424static int tpacpi_battery_set_validate(int what, int battery, int value)
9425{
9426 int ret, v;
9427
9428 ret = tpacpi_battery_set(what, battery, value);
9429 if (ret < 0)
9430 return ret;
9431
9432 ret = tpacpi_battery_get(what, battery, &v);
9433 if (ret < 0)
9434 return ret;
9435
9436 if (v == value)
9437 return 0;
9438
9439 msleep(500);
9440
9441 ret = tpacpi_battery_get(what, battery, &v);
9442 if (ret < 0)
9443 return ret;
9444
9445 if (v == value)
9446 return 0;
9447
9448 return -EIO;
9449}
9450
2801b968
OG		 9451static int tpacpi_battery_probe(int battery)
9452{
9453 int ret = 0;
9454
d22296d9
TW		 9455 memset(&battery_info.batteries[battery], 0,
9456 sizeof(battery_info.batteries[battery]));
9457
2801b968
OG		 9458 /*
9459 * 1) Get the current start threshold
9460 * 2) Check for support
9461 * 3) Get the current stop threshold
9462 * 4) Check for support
b55d416d
TW		 9463 * 5) Get the current force discharge status
9464 * 6) Check for support
400cffd5
TW		 9465 * 7) Get the current inhibit charge status
9466 * 8) Check for support
2801b968
OG		 9467 */
9468 if (acpi_has_method(hkey_handle, GET_START)) {
9469 if ACPI_FAILURE(tpacpi_battery_acpi_eval(GET_START, &ret, battery)) {
9470 pr_err("Error probing battery %d\n", battery);
9471 return -ENODEV;
9472 }
9473 /* Individual addressing is in bit 9 */
9474 if (ret & BIT(9))
9475 battery_info.individual_addressing = true;
9476 /* Support is marked in bit 8 */
9477 if (ret & BIT(8))
9478 battery_info.batteries[battery].start_support = 1;
9479 else
9480 return -ENODEV;
9481 if (tpacpi_battery_get(THRESHOLD_START, battery,
9482 &battery_info.batteries[battery].charge_start)) {
9483 pr_err("Error probing battery %d\n", battery);
9484 return -ENODEV;
9485 }
9486 }
9487 if (acpi_has_method(hkey_handle, GET_STOP)) {
9488 if ACPI_FAILURE(tpacpi_battery_acpi_eval(GET_STOP, &ret, battery)) {
9489 pr_err("Error probing battery stop; %d\n", battery);
9490 return -ENODEV;
9491 }
9492 /* Support is marked in bit 8 */
9493 if (ret & BIT(8))
9494 battery_info.batteries[battery].stop_support = 1;
9495 else
9496 return -ENODEV;
9497 if (tpacpi_battery_get(THRESHOLD_STOP, battery,
9498 &battery_info.batteries[battery].charge_stop)) {
9499 pr_err("Error probing battery stop: %d\n", battery);
9500 return -ENODEV;
9501 }
9502 }
b55d416d
TW		 9503 if (acpi_has_method(hkey_handle, GET_DISCHARGE)) {
9504 if (ACPI_FAILURE(tpacpi_battery_acpi_eval(GET_DISCHARGE, &ret, battery))) {
9505 pr_err("Error probing battery discharge; %d\n", battery);
9506 return -ENODEV;
9507 }
9508 /* Support is marked in bit 8 */
9509 if (ret & BIT(8))
9510 battery_info.batteries[battery].charge_behaviours |=
9511 BIT(POWER_SUPPLY_CHARGE_BEHAVIOUR_FORCE_DISCHARGE);
9512 }
400cffd5
TW		 9513 if (acpi_has_method(hkey_handle, GET_INHIBIT)) {
9514 if (ACPI_FAILURE(tpacpi_battery_acpi_eval(GET_INHIBIT, &ret, battery))) {
9515 pr_err("Error probing battery inhibit charge; %d\n", battery);
9516 return -ENODEV;
9517 }
9518 /* Support is marked in bit 5 */
9519 if (ret & BIT(5))
9520 battery_info.batteries[battery].charge_behaviours |=
9521 BIT(POWER_SUPPLY_CHARGE_BEHAVIOUR_INHIBIT_CHARGE);
9522 }
b55d416d
TW		 9523
9524 battery_info.batteries[battery].charge_behaviours |=
9525 BIT(POWER_SUPPLY_CHARGE_BEHAVIOUR_AUTO);
9526
9527 pr_info("battery %d registered (start %d, stop %d, behaviours: 0x%x)\n",
9528 battery,
9529 battery_info.batteries[battery].charge_start,
9530 battery_info.batteries[battery].charge_stop,
9531 battery_info.batteries[battery].charge_behaviours);
2801b968
OG		 9532
9533 return 0;
9534}
9535
9536/* General helper functions */
9537
9538static int tpacpi_battery_get_id(const char *battery_name)
9539{
9540
1a32ebb2
JW		 9541 if (strcmp(battery_name, "BAT0") == 0 ||
9542 tp_features.battery_force_primary)
2801b968
OG		 9543 return BAT_PRIMARY;
9544 if (strcmp(battery_name, "BAT1") == 0)
9545 return BAT_SECONDARY;
9546 /*
9547 * If for some reason the battery is not BAT0 nor is it
9548 * BAT1, we will assume it's the default, first battery,
9549 * AKA primary.
9550 */
9551 pr_warn("unknown battery %s, assuming primary", battery_name);
9552 return BAT_PRIMARY;
9553}
9554
9555/* sysfs interface */
9556
9557static ssize_t tpacpi_battery_store(int what,
9558 struct device *dev,
9559 const char *buf, size_t count)
9560{
9561 struct power_supply *supply = to_power_supply(dev);
9562 unsigned long value;
9563 int battery, rval;
9564 /*
9565 * Some systems have support for more than
9566 * one battery. If that is the case,
9567 * tpacpi_battery_probe marked that addressing
9568 * them individually is supported, so we do that
9569 * based on the device struct.
9570 *
9571 * On systems that are not supported, we assume
9572 * the primary as most of the ACPI calls fail
9573 * with "Any Battery" as the parameter.
9574 */
9575 if (battery_info.individual_addressing)
9576 /* BAT_PRIMARY or BAT_SECONDARY */
9577 battery = tpacpi_battery_get_id(supply->desc->name);
9578 else
9579 battery = BAT_PRIMARY;
9580
9581 rval = kstrtoul(buf, 10, &value);
9582 if (rval)
9583 return rval;
9584
9585 switch (what) {
9586 case THRESHOLD_START:
9587 if (!battery_info.batteries[battery].start_support)
9588 return -ENODEV;
9589 /* valid values are [0, 99] */
b991178f 9590 if (value > 99)
2801b968
OG		 9591 return -EINVAL;
9592 if (value > battery_info.batteries[battery].charge_stop)
9593 return -EINVAL;
9594 if (tpacpi_battery_set(THRESHOLD_START, battery, value))
9595 return -ENODEV;
9596 battery_info.batteries[battery].charge_start = value;
9597 return count;
9598
9599 case THRESHOLD_STOP:
9600 if (!battery_info.batteries[battery].stop_support)
9601 return -ENODEV;
9602 /* valid values are [1, 100] */
9603 if (value < 1 || value > 100)
9604 return -EINVAL;
9605 if (value < battery_info.batteries[battery].charge_start)
9606 return -EINVAL;
9607 battery_info.batteries[battery].charge_stop = value;
9608 /*
9609 * When 100 is passed to stop, we need to flip
9610 * it to 0 as that the EC understands that as
9611 * "Default", which will charge to 100%
9612 */
9613 if (value == 100)
9614 value = 0;
9615 if (tpacpi_battery_set(THRESHOLD_STOP, battery, value))
9616 return -EINVAL;
9617 return count;
9618 default:
9619 pr_crit("Wrong parameter: %d", what);
9620 return -EINVAL;
9621 }
9622 return count;
9623}
9624
9625static ssize_t tpacpi_battery_show(int what,
9626 struct device *dev,
9627 char *buf)
9628{
9629 struct power_supply *supply = to_power_supply(dev);
9630 int ret, battery;
9631 /*
9632 * Some systems have support for more than
9633 * one battery. If that is the case,
9634 * tpacpi_battery_probe marked that addressing
9635 * them individually is supported, so we;
9636 * based on the device struct.
9637 *
9638 * On systems that are not supported, we assume
9639 * the primary as most of the ACPI calls fail
9640 * with "Any Battery" as the parameter.
9641 */
9642 if (battery_info.individual_addressing)
9643 /* BAT_PRIMARY or BAT_SECONDARY */
9644 battery = tpacpi_battery_get_id(supply->desc->name);
9645 else
9646 battery = BAT_PRIMARY;
9647 if (tpacpi_battery_get(what, battery, &ret))
9648 return -ENODEV;
9649 return sprintf(buf, "%d\n", ret);
9650}
9651
e3392953 9652static ssize_t charge_control_start_threshold_show(struct device *device,
2801b968
OG		 9653 struct device_attribute *attr,
9654 char *buf)
9655{
9656 return tpacpi_battery_show(THRESHOLD_START, device, buf);
9657}
9658
e3392953 9659static ssize_t charge_control_end_threshold_show(struct device *device,
2801b968
OG		 9660 struct device_attribute *attr,
9661 char *buf)
9662{
9663 return tpacpi_battery_show(THRESHOLD_STOP, device, buf);
9664}
9665
b55d416d
TW		 9666static ssize_t charge_behaviour_show(struct device *dev,
9667 struct device_attribute *attr,
9668 char *buf)
2801b968 9669{
b55d416d
TW		 9670 enum power_supply_charge_behaviour active = POWER_SUPPLY_CHARGE_BEHAVIOUR_AUTO;
9671 struct power_supply *supply = to_power_supply(dev);
9672 unsigned int available;
9673 int ret, battery;
9674
9675 battery = tpacpi_battery_get_id(supply->desc->name);
9676 available = battery_info.batteries[battery].charge_behaviours;
9677
9678 if (available & BIT(POWER_SUPPLY_CHARGE_BEHAVIOUR_FORCE_DISCHARGE)) {
9679 if (tpacpi_battery_get(FORCE_DISCHARGE, battery, &ret))
9680 return -ENODEV;
400cffd5 9681 if (ret) {
b55d416d 9682 active = POWER_SUPPLY_CHARGE_BEHAVIOUR_FORCE_DISCHARGE;
400cffd5
TW		 9683 goto out;
9684 }
9685 }
9686
9687 if (available & BIT(POWER_SUPPLY_CHARGE_BEHAVIOUR_INHIBIT_CHARGE)) {
9688 if (tpacpi_battery_get(INHIBIT_CHARGE, battery, &ret))
9689 return -ENODEV;
9690 if (ret) {
9691 active = POWER_SUPPLY_CHARGE_BEHAVIOUR_INHIBIT_CHARGE;
9692 goto out;
9693 }
b55d416d
TW		 9694 }
9695
400cffd5 9696out:
b55d416d
TW		 9697 return power_supply_charge_behaviour_show(dev, available, active, buf);
9698}
9699
e3392953 9700static ssize_t charge_control_start_threshold_store(struct device *dev,
2801b968
OG		 9701 struct device_attribute *attr,
9702 const char *buf, size_t count)
9703{
9704 return tpacpi_battery_store(THRESHOLD_START, dev, buf, count);
9705}
9706
e3392953 9707static ssize_t charge_control_end_threshold_store(struct device *dev,
2801b968
OG		 9708 struct device_attribute *attr,
9709 const char *buf, size_t count)
9710{
9711 return tpacpi_battery_store(THRESHOLD_STOP, dev, buf, count);
9712}
9713
b55d416d
TW		 9714static ssize_t charge_behaviour_store(struct device *dev,
9715 struct device_attribute *attr,
9716 const char *buf, size_t count)
9717{
9718 struct power_supply *supply = to_power_supply(dev);
9719 int selected, battery, ret = 0;
9720 unsigned int available;
9721
9722 battery = tpacpi_battery_get_id(supply->desc->name);
9723 available = battery_info.batteries[battery].charge_behaviours;
9724 selected = power_supply_charge_behaviour_parse(available, buf);
9725
9726 if (selected < 0)
9727 return selected;
9728
9729 switch (selected) {
9730 case POWER_SUPPLY_CHARGE_BEHAVIOUR_AUTO:
9731 if (available & BIT(POWER_SUPPLY_CHARGE_BEHAVIOUR_FORCE_DISCHARGE))
9732 ret = tpacpi_battery_set_validate(FORCE_DISCHARGE, battery, 0);
400cffd5
TW		 9733 if (available & BIT(POWER_SUPPLY_CHARGE_BEHAVIOUR_INHIBIT_CHARGE))
9734 ret = min(ret, tpacpi_battery_set_validate(INHIBIT_CHARGE, battery, 0));
b55d416d
TW		 9735 if (ret < 0)
9736 return ret;
9737 break;
9738 case POWER_SUPPLY_CHARGE_BEHAVIOUR_FORCE_DISCHARGE:
400cffd5
TW		 9739 if (available & BIT(POWER_SUPPLY_CHARGE_BEHAVIOUR_INHIBIT_CHARGE))
9740 ret = tpacpi_battery_set_validate(INHIBIT_CHARGE, battery, 0);
9741 ret = min(ret, tpacpi_battery_set_validate(FORCE_DISCHARGE, battery, 1));
9742 if (ret < 0)
9743 return ret;
9744 break;
9745 case POWER_SUPPLY_CHARGE_BEHAVIOUR_INHIBIT_CHARGE:
9746 if (available & BIT(POWER_SUPPLY_CHARGE_BEHAVIOUR_FORCE_DISCHARGE))
9747 ret = tpacpi_battery_set_validate(FORCE_DISCHARGE, battery, 0);
9748 ret = min(ret, tpacpi_battery_set_validate(INHIBIT_CHARGE, battery, 1));
b55d416d
TW		 9749 if (ret < 0)
9750 return ret;
9751 break;
9752 default:
9753 dev_err(dev, "Unexpected charge behaviour: %d\n", selected);
9754 return -EINVAL;
9755 }
9756
9757 return count;
9758}
9759
e3392953
TW		 9760static DEVICE_ATTR_RW(charge_control_start_threshold);
9761static DEVICE_ATTR_RW(charge_control_end_threshold);
b55d416d 9762static DEVICE_ATTR_RW(charge_behaviour);
066d7f32 9763static struct device_attribute dev_attr_charge_start_threshold = __ATTR(
e3392953
TW		 9764 charge_start_threshold,
9765 0644,
9766 charge_control_start_threshold_show,
9767 charge_control_start_threshold_store
9768);
066d7f32 9769static struct device_attribute dev_attr_charge_stop_threshold = __ATTR(
e3392953
TW		 9770 charge_stop_threshold,
9771 0644,
9772 charge_control_end_threshold_show,
9773 charge_control_end_threshold_store
9774);
2801b968
OG		 9775
9776static struct attribute *tpacpi_battery_attrs[] = {
e3392953
TW		 9777 &dev_attr_charge_control_start_threshold.attr,
9778 &dev_attr_charge_control_end_threshold.attr,
2801b968
OG		 9779 &dev_attr_charge_start_threshold.attr,
9780 &dev_attr_charge_stop_threshold.attr,
b55d416d 9781 &dev_attr_charge_behaviour.attr,
2801b968
OG		 9782 NULL,
9783};
9784
9785ATTRIBUTE_GROUPS(tpacpi_battery);
9786
9787/* ACPI battery hooking */
9788
878a82c2 9789static int tpacpi_battery_add(struct power_supply *battery, struct acpi_battery_hook *hook)
2801b968
OG		 9790{
9791 int batteryid = tpacpi_battery_get_id(battery->desc->name);
9792
9793 if (tpacpi_battery_probe(batteryid))
9794 return -ENODEV;
9795 if (device_add_groups(&battery->dev, tpacpi_battery_groups))
9796 return -ENODEV;
9797 return 0;
9798}
9799
878a82c2 9800static int tpacpi_battery_remove(struct power_supply *battery, struct acpi_battery_hook *hook)
2801b968
OG		 9801{
9802 device_remove_groups(&battery->dev, tpacpi_battery_groups);
9803 return 0;
9804}
9805
9806static struct acpi_battery_hook battery_hook = {
9807 .add_battery = tpacpi_battery_add,
9808 .remove_battery = tpacpi_battery_remove,
9809 .name = "ThinkPad Battery Extension",
9810};
9811
9812/* Subdriver init/exit */
9813
1a32ebb2
JW		 9814static const struct tpacpi_quirk battery_quirk_table[] __initconst = {
9815 /*
9816 * Individual addressing is broken on models that expose the
9817 * primary battery as BAT1.
9818 */
6640ee62
JW		 9819 TPACPI_Q_LNV('J', '7', true), /* B5400 */
9820 TPACPI_Q_LNV('J', 'I', true), /* Thinkpad 11e */
9821 TPACPI_Q_LNV3('R', '0', 'B', true), /* Thinkpad 11e gen 3 */
1a32ebb2 9822 TPACPI_Q_LNV3('R', '0', 'C', true), /* Thinkpad 13 */
6640ee62 9823 TPACPI_Q_LNV3('R', '0', 'J', true), /* Thinkpad 13 gen 2 */
3cd420b2 9824 TPACPI_Q_LNV3('R', '0', 'K', true), /* Thinkpad 11e gen 4 celeron BIOS */
1a32ebb2
JW		 9825};
9826
2801b968
OG		 9827static int __init tpacpi_battery_init(struct ibm_init_struct *ibm)
9828{
d22296d9
TW		 9829 memset(&battery_info, 0, sizeof(battery_info));
9830
1a32ebb2
JW		 9831 tp_features.battery_force_primary = tpacpi_check_quirks(
9832 battery_quirk_table,
9833 ARRAY_SIZE(battery_quirk_table));
9834
2801b968
OG		 9835 battery_hook_register(&battery_hook);
9836 return 0;
9837}
9838
9839static void tpacpi_battery_exit(void)
9840{
9841 battery_hook_unregister(&battery_hook);
9842}
9843
9844static struct ibm_struct battery_driver_data = {
9845 .name = "battery",
9846 .exit = tpacpi_battery_exit,
9847};
9848
110ea1d8
AS		 9849/*************************************************************************
9850 * LCD Shadow subdriver, for the Lenovo PrivacyGuard feature
9851 */
9852
f809891e 9853static struct drm_privacy_screen *lcdshadow_dev;
e8b7eb66
HG		 9854static acpi_handle lcdshadow_get_handle;
9855static acpi_handle lcdshadow_set_handle;
110ea1d8 9856
f809891e
HG		 9857static int lcdshadow_set_sw_state(struct drm_privacy_screen *priv,
9858 enum drm_privacy_screen_status state)
110ea1d8 9859{
110ea1d8
AS		 9860 int output;
9861
f809891e 9862 if (WARN_ON(!mutex_is_locked(&priv->lock)))
110ea1d8 9863 return -EIO;
110ea1d8 9864
e8b7eb66 9865 if (!acpi_evalf(lcdshadow_set_handle, &output, NULL, "dd", (int)state))
110ea1d8
AS		 9866 return -EIO;
9867
f809891e 9868 priv->hw_state = priv->sw_state = state;
110ea1d8
AS		 9869 return 0;
9870}
9871
f809891e 9872static void lcdshadow_get_hw_state(struct drm_privacy_screen *priv)
110ea1d8 9873{
f809891e
HG		 9874 int output;
9875
9876 if (!acpi_evalf(lcdshadow_get_handle, &output, NULL, "dd", 0))
9877 return;
9878
9879 priv->hw_state = priv->sw_state = output & 0x1;
110ea1d8
AS		 9880}
9881
f809891e
HG		 9882static const struct drm_privacy_screen_ops lcdshadow_ops = {
9883 .set_sw_state = lcdshadow_set_sw_state,
9884 .get_hw_state = lcdshadow_get_hw_state,
9885};
9886
110ea1d8
AS		 9887static int tpacpi_lcdshadow_init(struct ibm_init_struct *iibm)
9888{
e8b7eb66 9889 acpi_status status1, status2;
110ea1d8
AS		 9890 int output;
9891
e8b7eb66
HG		 9892 status1 = acpi_get_handle(hkey_handle, "GSSS", &lcdshadow_get_handle);
9893 status2 = acpi_get_handle(hkey_handle, "SSSS", &lcdshadow_set_handle);
f809891e 9894 if (ACPI_FAILURE(status1) || ACPI_FAILURE(status2))
110ea1d8 9895 return 0;
110ea1d8 9896
f809891e 9897 if (!acpi_evalf(lcdshadow_get_handle, &output, NULL, "dd", 0))
110ea1d8 9898 return -EIO;
f809891e
HG		 9899
9900 if (!(output & 0x10000))
110ea1d8 9901 return 0;
f809891e
HG		 9902
9903 lcdshadow_dev = drm_privacy_screen_register(&tpacpi_pdev->dev,
30598d92 9904 &lcdshadow_ops, NULL);
f809891e
HG		 9905 if (IS_ERR(lcdshadow_dev))
9906 return PTR_ERR(lcdshadow_dev);
110ea1d8
AS		 9907
9908 return 0;
9909}
9910
f809891e
HG		 9911static void lcdshadow_exit(void)
9912{
9913 drm_privacy_screen_unregister(lcdshadow_dev);
9914}
9915
110ea1d8
AS		 9916static void lcdshadow_resume(void)
9917{
f809891e
HG		 9918 if (!lcdshadow_dev)
9919 return;
9920
9921 mutex_lock(&lcdshadow_dev->lock);
9922 lcdshadow_set_sw_state(lcdshadow_dev, lcdshadow_dev->sw_state);
9923 mutex_unlock(&lcdshadow_dev->lock);
110ea1d8
AS		 9924}
9925
9926static int lcdshadow_read(struct seq_file *m)
9927{
f809891e 9928 if (!lcdshadow_dev) {
110ea1d8
AS		 9929 seq_puts(m, "status:\t\tnot supported\n");
9930 } else {
f809891e 9931 seq_printf(m, "status:\t\t%d\n", lcdshadow_dev->hw_state);
110ea1d8
AS		 9932 seq_puts(m, "commands:\t0, 1\n");
9933 }
9934
9935 return 0;
9936}
9937
9938static int lcdshadow_write(char *buf)
9939{
9940 char *cmd;
466f4697 9941 int res, state = -EINVAL;
110ea1d8 9942
f809891e 9943 if (!lcdshadow_dev)
110ea1d8
AS		 9944 return -ENODEV;
9945
be51bd45 9946 while ((cmd = strsep(&buf, ","))) {
466f4697
AS		 9947 res = kstrtoint(cmd, 10, &state);
9948 if (res < 0)
9949 return res;
110ea1d8
AS		 9950 }
9951
466f4697 9952 if (state >= 2 || state < 0)
110ea1d8
AS		 9953 return -EINVAL;
9954
f809891e
HG		 9955 mutex_lock(&lcdshadow_dev->lock);
9956 res = lcdshadow_set_sw_state(lcdshadow_dev, state);
9957 mutex_unlock(&lcdshadow_dev->lock);
9958
9959 drm_privacy_screen_call_notifier_chain(lcdshadow_dev);
9960
9961 return res;
110ea1d8
AS		 9962}
9963
9964static struct ibm_struct lcdshadow_driver_data = {
9965 .name = "lcdshadow",
f809891e 9966 .exit = lcdshadow_exit,
110ea1d8
AS		 9967 .resume = lcdshadow_resume,
9968 .read = lcdshadow_read,
9969 .write = lcdshadow_write,
9970};
9971
acf7f4a5 9972/*************************************************************************
1ac09656 9973 * Thinkpad sensor interfaces
acf7f4a5
MP		 9974 */
9975
0b4f5c95
MP		 9976#define DYTC_CMD_QUERY 0 /* To get DYTC status - enable/revision */
9977#define DYTC_QUERY_ENABLE_BIT 8 /* Bit 8 - 0 = disabled, 1 = enabled */
9978#define DYTC_QUERY_SUBREV_BIT 16 /* Bits 16 - 27 - sub revision */
9979#define DYTC_QUERY_REV_BIT 28 /* Bits 28 - 31 - revision */
9980
acf7f4a5
MP		 9981#define DYTC_CMD_GET 2 /* To get current IC function and mode */
9982#define DYTC_GET_LAPMODE_BIT 17 /* Set when in lapmode */
9983
1ac09656
MP		 9984#define PALMSENSOR_PRESENT_BIT 0 /* Determine if psensor present */
9985#define PALMSENSOR_ON_BIT 1 /* psensor status */
acf7f4a5 9986
1ac09656
MP		 9987static bool has_palmsensor;
9988static bool has_lapsensor;
9989static bool palm_state;
9990static bool lap_state;
0b4f5c95 9991static int dytc_version;
acf7f4a5 9992
c3bfcd4c 9993static int dytc_command(int command, int *output)
acf7f4a5
MP		 9994{
9995 acpi_handle dytc_handle;
9996
c3bfcd4c
MP		 9997 if (ACPI_FAILURE(acpi_get_handle(hkey_handle, "DYTC", &dytc_handle))) {
9998 /* Platform doesn't support DYTC */
acf7f4a5 9999 return -ENODEV;
c3bfcd4c
MP		 10000 }
10001 if (!acpi_evalf(dytc_handle, output, NULL, "dd", command))
acf7f4a5 10002 return -EIO;
c3bfcd4c
MP		 10003 return 0;
10004}
10005
10006static int lapsensor_get(bool *present, bool *state)
10007{
10008 int output, err;
10009
10010 *present = false;
10011 err = dytc_command(DYTC_CMD_GET, &output);
10012 if (err)
10013 return err;
1ac09656
MP		 10014
10015 *present = true; /*If we get his far, we have lapmode support*/
10016 *state = output & BIT(DYTC_GET_LAPMODE_BIT) ? true : false;
acf7f4a5
MP		 10017 return 0;
10018}
10019
1ac09656 10020static int palmsensor_get(bool *present, bool *state)
acf7f4a5 10021{
1ac09656
MP		 10022 acpi_handle psensor_handle;
10023 int output;
acf7f4a5 10024
1ac09656
MP		 10025 *present = false;
10026 if (ACPI_FAILURE(acpi_get_handle(hkey_handle, "GPSS", &psensor_handle)))
10027 return -ENODEV;
10028 if (!acpi_evalf(psensor_handle, &output, NULL, "d"))
10029 return -EIO;
10030
10031 *present = output & BIT(PALMSENSOR_PRESENT_BIT) ? true : false;
10032 *state = output & BIT(PALMSENSOR_ON_BIT) ? true : false;
acf7f4a5
MP		 10033 return 0;
10034}
10035
1ac09656 10036static void lapsensor_refresh(void)
acf7f4a5 10037{
1ac09656 10038 bool state;
acf7f4a5
MP		 10039 int err;
10040
1ac09656
MP		 10041 if (has_lapsensor) {
10042 err = lapsensor_get(&has_lapsensor, &state);
10043 if (err)
10044 return;
10045 if (lap_state != state) {
10046 lap_state = state;
10047 sysfs_notify(&tpacpi_pdev->dev.kobj, NULL, "dytc_lapmode");
10048 }
10049 }
10050}
acf7f4a5 10051
1ac09656
MP		 10052static void palmsensor_refresh(void)
10053{
10054 bool state;
10055 int err;
10056
10057 if (has_palmsensor) {
10058 err = palmsensor_get(&has_palmsensor, &state);
10059 if (err)
10060 return;
10061 if (palm_state != state) {
10062 palm_state = state;
10063 sysfs_notify(&tpacpi_pdev->dev.kobj, NULL, "palmsensor");
10064 }
10065 }
acf7f4a5
MP		 10066}
10067
acf7f4a5
MP		 10068static ssize_t dytc_lapmode_show(struct device *dev,
10069 struct device_attribute *attr,
10070 char *buf)
10071{
1ac09656
MP		 10072 if (has_lapsensor)
10073 return sysfs_emit(buf, "%d\n", lap_state);
10074 return sysfs_emit(buf, "\n");
acf7f4a5 10075}
acf7f4a5
MP		 10076static DEVICE_ATTR_RO(dytc_lapmode);
10077
1ac09656
MP		 10078static ssize_t palmsensor_show(struct device *dev,
10079 struct device_attribute *attr,
10080 char *buf)
10081{
10082 if (has_palmsensor)
10083 return sysfs_emit(buf, "%d\n", palm_state);
10084 return sysfs_emit(buf, "\n");
10085}
10086static DEVICE_ATTR_RO(palmsensor);
acf7f4a5 10087
79f960e2
LB		 10088static struct attribute *proxsensor_attributes[] = {
10089 &dev_attr_dytc_lapmode.attr,
10090 &dev_attr_palmsensor.attr,
10091 NULL
10092};
10093
10094static umode_t proxsensor_attr_is_visible(struct kobject *kobj,
10095 struct attribute *attr, int n)
10096{
10097 if (attr == &dev_attr_dytc_lapmode.attr) {
10098 /*
10099 * Platforms before DYTC version 5 claim to have a lap sensor,
10100 * but it doesn't work, so we ignore them.
10101 */
5a47ac00 10102 if (!has_lapsensor || dytc_version < 5)
79f960e2
LB		 10103 return 0;
10104 } else if (attr == &dev_attr_palmsensor.attr) {
10105 if (!has_palmsensor)
10106 return 0;
10107 }
10108
10109 return attr->mode;
10110}
10111
10112static const struct attribute_group proxsensor_attr_group = {
10113 .is_visible = proxsensor_attr_is_visible,
10114 .attrs = proxsensor_attributes,
10115};
10116
1ac09656 10117static int tpacpi_proxsensor_init(struct ibm_init_struct *iibm)
acf7f4a5 10118{
5a47ac00 10119 int palm_err, lap_err;
acf7f4a5 10120
1ac09656
MP		 10121 palm_err = palmsensor_get(&has_palmsensor, &palm_state);
10122 lap_err = lapsensor_get(&has_lapsensor, &lap_state);
c7e1c782 10123 /* If support isn't available for both devices return -ENODEV */
1ac09656 10124 if ((palm_err == -ENODEV) && (lap_err == -ENODEV))
c7e1c782 10125 return -ENODEV;
1ac09656 10126 /* Otherwise, if there was an error return it */
aa44afab 10127 if (palm_err && (palm_err != -ENODEV))
1ac09656 10128 return palm_err;
aa44afab 10129 if (lap_err && (lap_err != -ENODEV))
1ac09656
MP		 10130 return lap_err;
10131
1ac09656 10132 return 0;
acf7f4a5
MP		 10133}
10134
1ac09656
MP		 10135static struct ibm_struct proxsensor_driver_data = {
10136 .name = "proximity-sensor",
acf7f4a5
MP		 10137};
10138
c3bfcd4c
MP		 10139/*************************************************************************
10140 * DYTC Platform Profile interface
10141 */
10142
c3bfcd4c 10143#define DYTC_CMD_SET 1 /* To enable/disable IC function mode */
7a47f86b 10144#define DYTC_CMD_MMC_GET 8 /* To get current MMC function and mode */
c3bfcd4c
MP		 10145#define DYTC_CMD_RESET 0x1ff /* To reset back to default */
10146
836f35f7
MP		 10147#define DYTC_CMD_FUNC_CAP 3 /* To get DYTC capabilities */
10148#define DYTC_FC_MMC 27 /* MMC Mode supported */
e1c21608 10149#define DYTC_FC_PSC 29 /* PSC Mode supported */
46dcbc61 10150#define DYTC_FC_AMT 31 /* AMT mode supported */
836f35f7 10151
c3bfcd4c
MP		 10152#define DYTC_GET_FUNCTION_BIT 8 /* Bits 8-11 - function setting */
10153#define DYTC_GET_MODE_BIT 12 /* Bits 12-15 - mode setting */
10154
10155#define DYTC_SET_FUNCTION_BIT 12 /* Bits 12-15 - function setting */
10156#define DYTC_SET_MODE_BIT 16 /* Bits 16-19 - mode setting */
10157#define DYTC_SET_VALID_BIT 20 /* Bit 20 - 1 = on, 0 = off */
10158
10159#define DYTC_FUNCTION_STD 0 /* Function = 0, standard mode */
10160#define DYTC_FUNCTION_CQL 1 /* Function = 1, lap mode */
e1c21608
MP		 10161#define DYTC_FUNCTION_MMC 11 /* Function = 11, MMC mode */
10162#define DYTC_FUNCTION_PSC 13 /* Function = 13, PSC mode */
46dcbc61
MP		 10163#define DYTC_FUNCTION_AMT 15 /* Function = 15, AMT mode */
10164
10165#define DYTC_MODE_AMT_ENABLE 0x1 /* Enable AMT (in balanced mode) */
10166#define DYTC_MODE_AMT_DISABLE 0xF /* Disable AMT (in other modes) */
c3bfcd4c 10167
e1c21608
MP		 10168#define DYTC_MODE_MMC_PERFORM 2 /* High power mode aka performance */
10169#define DYTC_MODE_MMC_LOWPOWER 3 /* Low power mode */
10170#define DYTC_MODE_MMC_BALANCE 0xF /* Default mode aka balanced */
10171#define DYTC_MODE_MMC_DEFAULT 0 /* Default mode from MMC_GET, aka balanced */
c3bfcd4c 10172
e1c21608
MP		 10173#define DYTC_MODE_PSC_LOWPOWER 3 /* Low power mode */
10174#define DYTC_MODE_PSC_BALANCE 5 /* Default mode aka balanced */
10175#define DYTC_MODE_PSC_PERFORM 7 /* High power mode aka performance */
7a47f86b
MP		 10176
10177#define DYTC_ERR_MASK 0xF /* Bits 0-3 in cmd result are the error result */
10178#define DYTC_ERR_SUCCESS 1 /* CMD completed successful */
c3bfcd4c
MP		 10179
10180#define DYTC_SET_COMMAND(function, mode, on) \
10181 (DYTC_CMD_SET | (function) << DYTC_SET_FUNCTION_BIT | \
10182 (mode) << DYTC_SET_MODE_BIT | \
10183 (on) << DYTC_SET_VALID_BIT)
10184
e1c21608
MP		 10185#define DYTC_DISABLE_CQL DYTC_SET_COMMAND(DYTC_FUNCTION_CQL, DYTC_MODE_MMC_BALANCE, 0)
10186#define DYTC_ENABLE_CQL DYTC_SET_COMMAND(DYTC_FUNCTION_CQL, DYTC_MODE_MMC_BALANCE, 1)
46dcbc61
MP		 10187static int dytc_control_amt(bool enable);
10188static bool dytc_amt_active;
c3bfcd4c 10189
c3bfcd4c
MP		 10190static enum platform_profile_option dytc_current_profile;
10191static atomic_t dytc_ignore_event = ATOMIC_INIT(0);
10192static DEFINE_MUTEX(dytc_mutex);
42504af7 10193static int dytc_capabilities;
7a47f86b 10194static bool dytc_mmc_get_available;
16848789 10195static int profile_force;
c3bfcd4c 10196
fde5f74c
MP		 10197static int convert_dytc_to_profile(int funcmode, int dytcmode,
10198 enum platform_profile_option *profile)
c3bfcd4c 10199{
fde5f74c
MP		 10200 switch (funcmode) {
10201 case DYTC_FUNCTION_MMC:
e1c21608
MP		 10202 switch (dytcmode) {
10203 case DYTC_MODE_MMC_LOWPOWER:
10204 *profile = PLATFORM_PROFILE_LOW_POWER;
10205 break;
10206 case DYTC_MODE_MMC_DEFAULT:
10207 case DYTC_MODE_MMC_BALANCE:
10208 *profile = PLATFORM_PROFILE_BALANCED;
10209 break;
10210 case DYTC_MODE_MMC_PERFORM:
10211 *profile = PLATFORM_PROFILE_PERFORMANCE;
10212 break;
10213 default: /* Unknown mode */
10214 return -EINVAL;
10215 }
10216 return 0;
fde5f74c 10217 case DYTC_FUNCTION_PSC:
e1c21608
MP		 10218 switch (dytcmode) {
10219 case DYTC_MODE_PSC_LOWPOWER:
10220 *profile = PLATFORM_PROFILE_LOW_POWER;
10221 break;
10222 case DYTC_MODE_PSC_BALANCE:
10223 *profile = PLATFORM_PROFILE_BALANCED;
10224 break;
10225 case DYTC_MODE_PSC_PERFORM:
10226 *profile = PLATFORM_PROFILE_PERFORMANCE;
10227 break;
10228 default: /* Unknown mode */
10229 return -EINVAL;
10230 }
fde5f74c
MP		 10231 return 0;
10232 case DYTC_FUNCTION_AMT:
10233 /* For now return balanced. It's the closest we have to 'auto' */
10234 *profile = PLATFORM_PROFILE_BALANCED;
10235 return 0;
10236 default:
10237 /* Unknown function */
10238 return -EOPNOTSUPP;
c3bfcd4c
MP		 10239 }
10240 return 0;
10241}
10242
10243static int convert_profile_to_dytc(enum platform_profile_option profile, int *perfmode)
10244{
10245 switch (profile) {
10246 case PLATFORM_PROFILE_LOW_POWER:
42504af7 10247 if (dytc_capabilities & BIT(DYTC_FC_MMC))
e1c21608 10248 *perfmode = DYTC_MODE_MMC_LOWPOWER;
42504af7 10249 else if (dytc_capabilities & BIT(DYTC_FC_PSC))
e1c21608 10250 *perfmode = DYTC_MODE_PSC_LOWPOWER;
c3bfcd4c
MP		 10251 break;
10252 case PLATFORM_PROFILE_BALANCED:
42504af7 10253 if (dytc_capabilities & BIT(DYTC_FC_MMC))
e1c21608 10254 *perfmode = DYTC_MODE_MMC_BALANCE;
42504af7 10255 else if (dytc_capabilities & BIT(DYTC_FC_PSC))
e1c21608 10256 *perfmode = DYTC_MODE_PSC_BALANCE;
c3bfcd4c
MP		 10257 break;
10258 case PLATFORM_PROFILE_PERFORMANCE:
42504af7 10259 if (dytc_capabilities & BIT(DYTC_FC_MMC))
e1c21608 10260 *perfmode = DYTC_MODE_MMC_PERFORM;
42504af7 10261 else if (dytc_capabilities & BIT(DYTC_FC_PSC))
e1c21608 10262 *perfmode = DYTC_MODE_PSC_PERFORM;
c3bfcd4c
MP		 10263 break;
10264 default: /* Unknown profile */
10265 return -EOPNOTSUPP;
10266 }
10267 return 0;
10268}
10269
10270/*
10271 * dytc_profile_get: Function to register with platform_profile
10272 * handler. Returns current platform profile.
10273 */
d2386d79
HG		 10274static int dytc_profile_get(struct platform_profile_handler *pprof,
10275 enum platform_profile_option *profile)
c3bfcd4c
MP		 10276{
10277 *profile = dytc_current_profile;
10278 return 0;
10279}
10280
46dcbc61
MP		 10281static int dytc_control_amt(bool enable)
10282{
10283 int dummy;
10284 int err;
10285 int cmd;
10286
10287 if (!(dytc_capabilities & BIT(DYTC_FC_AMT))) {
10288 pr_warn("Attempting to toggle AMT on a system that doesn't advertise support\n");
10289 return -ENODEV;
10290 }
10291
10292 if (enable)
10293 cmd = DYTC_SET_COMMAND(DYTC_FUNCTION_AMT, DYTC_MODE_AMT_ENABLE, enable);
10294 else
10295 cmd = DYTC_SET_COMMAND(DYTC_FUNCTION_AMT, DYTC_MODE_AMT_DISABLE, enable);
10296
10297 pr_debug("%sabling AMT (cmd 0x%x)", enable ? "en":"dis", cmd);
10298 err = dytc_command(cmd, &dummy);
10299 if (err)
10300 return err;
10301 dytc_amt_active = enable;
10302 return 0;
10303}
10304
c3bfcd4c
MP		 10305/*
10306 * Helper function - check if we are in CQL mode and if we are
10307 * - disable CQL,
10308 * - run the command
10309 * - enable CQL
10310 * If not in CQL mode, just run the command
10311 */
d2386d79 10312static int dytc_cql_command(int command, int *output)
c3bfcd4c
MP		 10313{
10314 int err, cmd_err, dummy;
10315 int cur_funcmode;
10316
10317 /* Determine if we are in CQL mode. This alters the commands we do */
10318 err = dytc_command(DYTC_CMD_GET, output);
10319 if (err)
10320 return err;
10321
10322 cur_funcmode = (*output >> DYTC_GET_FUNCTION_BIT) & 0xF;
10323 /* Check if we're OK to return immediately */
10324 if ((command == DYTC_CMD_GET) && (cur_funcmode != DYTC_FUNCTION_CQL))
10325 return 0;
10326
10327 if (cur_funcmode == DYTC_FUNCTION_CQL) {
10328 atomic_inc(&dytc_ignore_event);
10329 err = dytc_command(DYTC_DISABLE_CQL, &dummy);
10330 if (err)
10331 return err;
10332 }
10333
10334 cmd_err = dytc_command(command, output);
10335 /* Check return condition after we've restored CQL state */
10336
10337 if (cur_funcmode == DYTC_FUNCTION_CQL) {
10338 err = dytc_command(DYTC_ENABLE_CQL, &dummy);
10339 if (err)
10340 return err;
10341 }
c3bfcd4c
MP		 10342 return cmd_err;
10343}
10344
10345/*
10346 * dytc_profile_set: Function to register with platform_profile
10347 * handler. Sets current platform profile.
10348 */
d2386d79
HG		 10349static int dytc_profile_set(struct platform_profile_handler *pprof,
10350 enum platform_profile_option profile)
c3bfcd4c 10351{
d4b938ab 10352 int perfmode;
c3bfcd4c
MP		 10353 int output;
10354 int err;
10355
c3bfcd4c
MP		 10356 err = mutex_lock_interruptible(&dytc_mutex);
10357 if (err)
10358 return err;
10359
d4b938ab
MP		 10360 err = convert_profile_to_dytc(profile, &perfmode);
10361 if (err)
10362 goto unlock;
c3bfcd4c 10363
42504af7 10364 if (dytc_capabilities & BIT(DYTC_FC_MMC)) {
e1c21608
MP		 10365 if (profile == PLATFORM_PROFILE_BALANCED) {
10366 /*
10367 * To get back to balanced mode we need to issue a reset command.
10368 * Note we still need to disable CQL mode before hand and re-enable
10369 * it afterwards, otherwise dytc_lapmode gets reset to 0 and stays
10370 * stuck at 0 for aprox. 30 minutes.
10371 */
10372 err = dytc_cql_command(DYTC_CMD_RESET, &output);
10373 if (err)
10374 goto unlock;
10375 } else {
e1c21608
MP		 10376 /* Determine if we are in CQL mode. This alters the commands we do */
10377 err = dytc_cql_command(DYTC_SET_COMMAND(DYTC_FUNCTION_MMC, perfmode, 1),
10378 &output);
10379 if (err)
10380 goto unlock;
10381 }
1bc5d819 10382 } else if (dytc_capabilities & BIT(DYTC_FC_PSC)) {
e1c21608 10383 err = dytc_command(DYTC_SET_COMMAND(DYTC_FUNCTION_PSC, perfmode, 1), &output);
c3bfcd4c
MP		 10384 if (err)
10385 goto unlock;
fde5f74c 10386
46dcbc61
MP		 10387 /* system supports AMT, activate it when on balanced */
10388 if (dytc_capabilities & BIT(DYTC_FC_AMT))
10389 dytc_control_amt(profile == PLATFORM_PROFILE_BALANCED);
c3bfcd4c
MP		 10390 }
10391 /* Success - update current profile */
10392 dytc_current_profile = profile;
10393unlock:
10394 mutex_unlock(&dytc_mutex);
10395 return err;
10396}
10397
10398static void dytc_profile_refresh(void)
10399{
10400 enum platform_profile_option profile;
f999e23c
MP		 10401 int output = 0, err = 0;
10402 int perfmode, funcmode = 0;
c3bfcd4c
MP		 10403
10404 mutex_lock(&dytc_mutex);
42504af7 10405 if (dytc_capabilities & BIT(DYTC_FC_MMC)) {
e1c21608
MP		 10406 if (dytc_mmc_get_available)
10407 err = dytc_command(DYTC_CMD_MMC_GET, &output);
10408 else
10409 err = dytc_cql_command(DYTC_CMD_GET, &output);
1bc5d819
MP		 10410 funcmode = DYTC_FUNCTION_MMC;
10411 } else if (dytc_capabilities & BIT(DYTC_FC_PSC)) {
e1c21608 10412 err = dytc_command(DYTC_CMD_GET, &output);
1bc5d819
MP		 10413 /* Check if we are PSC mode, or have AMT enabled */
10414 funcmode = (output >> DYTC_GET_FUNCTION_BIT) & 0xF;
f999e23c
MP		 10415 } else { /* Unknown profile mode */
10416 err = -ENODEV;
1bc5d819 10417 }
c3bfcd4c
MP		 10418 mutex_unlock(&dytc_mutex);
10419 if (err)
10420 return;
10421
10422 perfmode = (output >> DYTC_GET_MODE_BIT) & 0xF;
fde5f74c 10423 convert_dytc_to_profile(funcmode, perfmode, &profile);
c3bfcd4c
MP		 10424 if (profile != dytc_current_profile) {
10425 dytc_current_profile = profile;
10426 platform_profile_notify();
10427 }
10428}
10429
10430static struct platform_profile_handler dytc_profile = {
10431 .profile_get = dytc_profile_get,
10432 .profile_set = dytc_profile_set,
10433};
10434
10435static int tpacpi_dytc_profile_init(struct ibm_init_struct *iibm)
10436{
10437 int err, output;
10438
10439 /* Setup supported modes */
10440 set_bit(PLATFORM_PROFILE_LOW_POWER, dytc_profile.choices);
10441 set_bit(PLATFORM_PROFILE_BALANCED, dytc_profile.choices);
10442 set_bit(PLATFORM_PROFILE_PERFORMANCE, dytc_profile.choices);
10443
c3bfcd4c 10444 err = dytc_command(DYTC_CMD_QUERY, &output);
c3bfcd4c
MP		 10445 if (err)
10446 return err;
10447
5a47ac00
HG		 10448 if (output & BIT(DYTC_QUERY_ENABLE_BIT))
10449 dytc_version = (output >> DYTC_QUERY_REV_BIT) & 0xF;
10450
c3bfcd4c 10451 /* Check DYTC is enabled and supports mode setting */
0b0d2fba
HG		 10452 if (dytc_version < 5)
10453 return -ENODEV;
c3bfcd4c 10454
e1c21608 10455 /* Check what capabilities are supported */
42504af7 10456 err = dytc_command(DYTC_CMD_FUNC_CAP, &dytc_capabilities);
836f35f7
MP		 10457 if (err)
10458 return err;
e1c21608 10459
16848789
MP		 10460 /* Check if user wants to override the profile selection */
10461 if (profile_force) {
10462 switch (profile_force) {
10463 case -1:
10464 dytc_capabilities = 0;
10465 break;
10466 case 1:
10467 dytc_capabilities = BIT(DYTC_FC_MMC);
10468 break;
10469 case 2:
10470 dytc_capabilities = BIT(DYTC_FC_PSC);
10471 break;
10472 }
10473 pr_debug("Profile selection forced: 0x%x\n", dytc_capabilities);
10474 }
42504af7
MP		 10475 if (dytc_capabilities & BIT(DYTC_FC_MMC)) { /* MMC MODE */
10476 pr_debug("MMC is supported\n");
e1c21608
MP		 10477 /*
10478 * Check if MMC_GET functionality available
10479 * Version > 6 and return success from MMC_GET command
10480 */
10481 dytc_mmc_get_available = false;
10482 if (dytc_version >= 6) {
10483 err = dytc_command(DYTC_CMD_MMC_GET, &output);
10484 if (!err && ((output & DYTC_ERR_MASK) == DYTC_ERR_SUCCESS))
10485 dytc_mmc_get_available = true;
10486 }
42504af7
MP		 10487 } else if (dytc_capabilities & BIT(DYTC_FC_PSC)) { /* PSC MODE */
10488 pr_debug("PSC is supported\n");
e1c21608
MP		 10489 } else {
10490 dbg_printk(TPACPI_DBG_INIT, "No DYTC support available\n");
836f35f7
MP		 10491 return -ENODEV;
10492 }
10493
798682e2
HG		 10494 dbg_printk(TPACPI_DBG_INIT,
10495 "DYTC version %d: thermal mode available\n", dytc_version);
e1c21608 10496
798682e2
HG		 10497 /* Create platform_profile structure and register */
10498 err = platform_profile_register(&dytc_profile);
10499 /*
10500 * If for some reason platform_profiles aren't enabled
10501 * don't quit terminally.
10502 */
10503 if (err)
10504 return -ENODEV;
10505
10506 /* Ensure initial values are correct */
10507 dytc_profile_refresh();
10508
23657a43
ML		 10509 /* Workaround for https://bugzilla.kernel.org/show_bug.cgi?id=216347 */
10510 if (dytc_capabilities & BIT(DYTC_FC_PSC))
10511 dytc_profile_set(NULL, PLATFORM_PROFILE_BALANCED);
755b2492 10512
c3bfcd4c
MP		 10513 return 0;
10514}
10515
10516static void dytc_profile_exit(void)
10517{
0b0d2fba 10518 platform_profile_remove();
c3bfcd4c
MP		 10519}
10520
10521static struct ibm_struct dytc_profile_driver_data = {
10522 .name = "dytc-profile",
10523 .exit = dytc_profile_exit,
10524};
c3bfcd4c 10525
d7cbe277
NJ		 10526/*************************************************************************
10527 * Keyboard language interface
10528 */
10529
10530struct keyboard_lang_data {
10531 const char *lang_str;
10532 int lang_code;
10533};
10534
cfa75cca 10535static const struct keyboard_lang_data keyboard_lang_data[] = {
d7cbe277
NJ		 10536 {"be", 0x080c},
10537 {"cz", 0x0405},
10538 {"da", 0x0406},
10539 {"de", 0x0c07},
cfa75cca 10540 {"en", 0x0000},
d7cbe277
NJ		 10541 {"es", 0x2c0a},
10542 {"et", 0x0425},
10543 {"fr", 0x040c},
10544 {"fr-ch", 0x100c},
10545 {"hu", 0x040e},
10546 {"it", 0x0410},
10547 {"jp", 0x0411},
10548 {"nl", 0x0413},
10549 {"nn", 0x0414},
10550 {"pl", 0x0415},
10551 {"pt", 0x0816},
10552 {"sl", 0x041b},
10553 {"sv", 0x081d},
10554 {"tr", 0x041f},
10555};
10556
10557static int set_keyboard_lang_command(int command)
10558{
10559 acpi_handle sskl_handle;
10560 int output;
10561
10562 if (ACPI_FAILURE(acpi_get_handle(hkey_handle, "SSKL", &sskl_handle))) {
10563 /* Platform doesn't support SSKL */
10564 return -ENODEV;
10565 }
10566
10567 if (!acpi_evalf(sskl_handle, &output, NULL, "dd", command))
10568 return -EIO;
10569
10570 return 0;
10571}
10572
10573static int get_keyboard_lang(int *output)
10574{
10575 acpi_handle gskl_handle;
10576 int kbd_lang;
10577
10578 if (ACPI_FAILURE(acpi_get_handle(hkey_handle, "GSKL", &gskl_handle))) {
10579 /* Platform doesn't support GSKL */
10580 return -ENODEV;
10581 }
10582
10583 if (!acpi_evalf(gskl_handle, &kbd_lang, NULL, "dd", 0x02000000))
10584 return -EIO;
10585
9e9c6413
HG		 10586 /*
10587 * METHOD_ERR gets returned on devices where there are no special (e.g. '=',
10588 * '(' and ')') keys which use layout dependent key-press emulation.
10589 */
10590 if (kbd_lang & METHOD_ERR)
10591 return -ENODEV;
10592
d7cbe277
NJ		 10593 *output = kbd_lang;
10594
10595 return 0;
10596}
10597
10598/* sysfs keyboard language entry */
10599static ssize_t keyboard_lang_show(struct device *dev,
10600 struct device_attribute *attr,
10601 char *buf)
10602{
cfa75cca 10603 int output, err, i, len = 0;
d7cbe277
NJ		 10604
10605 err = get_keyboard_lang(&output);
10606 if (err)
10607 return err;
10608
10609 for (i = 0; i < ARRAY_SIZE(keyboard_lang_data); i++) {
10610 if (i)
cfa75cca 10611 len += sysfs_emit_at(buf, len, "%s", " ");
d7cbe277
NJ		 10612
10613 if (output == keyboard_lang_data[i].lang_code) {
cfa75cca 10614 len += sysfs_emit_at(buf, len, "[%s]", keyboard_lang_data[i].lang_str);
d7cbe277 10615 } else {
cfa75cca 10616 len += sysfs_emit_at(buf, len, "%s", keyboard_lang_data[i].lang_str);
d7cbe277
NJ		 10617 }
10618 }
cfa75cca 10619 len += sysfs_emit_at(buf, len, "\n");
d7cbe277 10620
cfa75cca 10621 return len;
d7cbe277
NJ		 10622}
10623
10624static ssize_t keyboard_lang_store(struct device *dev,
10625 struct device_attribute *attr,
10626 const char *buf, size_t count)
10627{
10628 int err, i;
10629 bool lang_found = false;
10630 int lang_code = 0;
10631
10632 for (i = 0; i < ARRAY_SIZE(keyboard_lang_data); i++) {
10633 if (sysfs_streq(buf, keyboard_lang_data[i].lang_str)) {
10634 lang_code = keyboard_lang_data[i].lang_code;
10635 lang_found = true;
10636 break;
10637 }
10638 }
10639
10640 if (lang_found) {
10641 lang_code = lang_code | 1 << 24;
10642
10643 /* Set language code */
10644 err = set_keyboard_lang_command(lang_code);
10645 if (err)
10646 return err;
10647 } else {
cfa75cca 10648 dev_err(&tpacpi_pdev->dev, "Unknown Keyboard language. Ignoring\n");
d7cbe277
NJ		 10649 return -EINVAL;
10650 }
10651
10652 tpacpi_disclose_usertask(attr->attr.name,
10653 "keyboard language is set to %s\n", buf);
10654
10655 sysfs_notify(&tpacpi_pdev->dev.kobj, NULL, "keyboard_lang");
10656
10657 return count;
10658}
d7cbe277
NJ		 10659static DEVICE_ATTR_RW(keyboard_lang);
10660
10661static struct attribute *kbdlang_attributes[] = {
10662 &dev_attr_keyboard_lang.attr,
10663 NULL
10664};
10665
79f960e2
LB		 10666static umode_t kbdlang_attr_is_visible(struct kobject *kobj,
10667 struct attribute *attr, int n)
10668{
10669 return tp_features.kbd_lang ? attr->mode : 0;
10670}
10671
d7cbe277 10672static const struct attribute_group kbdlang_attr_group = {
79f960e2 10673 .is_visible = kbdlang_attr_is_visible,
d7cbe277
NJ		 10674 .attrs = kbdlang_attributes,
10675};
10676
10677static int tpacpi_kbdlang_init(struct ibm_init_struct *iibm)
10678{
10679 int err, output;
10680
10681 err = get_keyboard_lang(&output);
79f960e2
LB		 10682 tp_features.kbd_lang = !err;
10683 return err;
d7cbe277
NJ		 10684}
10685
10686static struct ibm_struct kbdlang_driver_data = {
10687 .name = "kbdlang",
d7cbe277
NJ		 10688};
10689
3feb52a2
NJ		 10690/*************************************************************************
10691 * DPRC(Dynamic Power Reduction Control) subdriver, for the Lenovo WWAN
10692 * and WLAN feature.
10693 */
10694#define DPRC_GET_WWAN_ANTENNA_TYPE 0x40000
10695#define DPRC_WWAN_ANTENNA_TYPE_A_BIT BIT(4)
10696#define DPRC_WWAN_ANTENNA_TYPE_B_BIT BIT(8)
10697static bool has_antennatype;
10698static int wwan_antennatype;
10699
10700static int dprc_command(int command, int *output)
10701{
10702 acpi_handle dprc_handle;
10703
10704 if (ACPI_FAILURE(acpi_get_handle(hkey_handle, "DPRC", &dprc_handle))) {
10705 /* Platform doesn't support DPRC */
10706 return -ENODEV;
10707 }
10708
10709 if (!acpi_evalf(dprc_handle, output, NULL, "dd", command))
10710 return -EIO;
10711
10712 /*
10713 * METHOD_ERR gets returned on devices where few commands are not supported
10714 * for example command to get WWAN Antenna type command is not supported on
10715 * some devices.
10716 */
10717 if (*output & METHOD_ERR)
10718 return -ENODEV;
10719
10720 return 0;
10721}
10722
10723static int get_wwan_antenna(int *wwan_antennatype)
10724{
10725 int output, err;
10726
10727 /* Get current Antenna type */
10728 err = dprc_command(DPRC_GET_WWAN_ANTENNA_TYPE, &output);
10729 if (err)
10730 return err;
10731
10732 if (output & DPRC_WWAN_ANTENNA_TYPE_A_BIT)
10733 *wwan_antennatype = 1;
10734 else if (output & DPRC_WWAN_ANTENNA_TYPE_B_BIT)
10735 *wwan_antennatype = 2;
10736 else
10737 return -ENODEV;
10738
10739 return 0;
10740}
10741
10742/* sysfs wwan antenna type entry */
10743static ssize_t wwan_antenna_type_show(struct device *dev,
10744 struct device_attribute *attr,
10745 char *buf)
10746{
10747 switch (wwan_antennatype) {
10748 case 1:
10749 return sysfs_emit(buf, "type a\n");
10750 case 2:
10751 return sysfs_emit(buf, "type b\n");
10752 default:
10753 return -ENODATA;
10754 }
10755}
10756static DEVICE_ATTR_RO(wwan_antenna_type);
10757
79f960e2
LB		 10758static struct attribute *dprc_attributes[] = {
10759 &dev_attr_wwan_antenna_type.attr,
10760 NULL
10761};
10762
10763static umode_t dprc_attr_is_visible(struct kobject *kobj,
10764 struct attribute *attr, int n)
3feb52a2 10765{
79f960e2
LB		 10766 return has_antennatype ? attr->mode : 0;
10767}
3feb52a2 10768
79f960e2
LB		 10769static const struct attribute_group dprc_attr_group = {
10770 .is_visible = dprc_attr_is_visible,
10771 .attrs = dprc_attributes,
10772};
3feb52a2 10773
3feb52a2
NJ		 10774static int tpacpi_dprc_init(struct ibm_init_struct *iibm)
10775{
c7e1c782 10776 int err;
3feb52a2 10777
c7e1c782 10778 err = get_wwan_antenna(&wwan_antennatype);
79f960e2
LB		 10779 if (err)
10780 return err;
3feb52a2 10781
79f960e2 10782 has_antennatype = true;
3feb52a2
NJ		 10783 return 0;
10784}
10785
79f960e2
LB		 10786static struct ibm_struct dprc_driver_data = {
10787 .name = "dprc",
10788};
10789
10790/* --------------------------------------------------------------------- */
10791
5cd68968 10792static struct attribute *tpacpi_driver_attributes[] = {
79f960e2
LB		 10793 &driver_attr_debug_level.attr,
10794 &driver_attr_version.attr,
10795 &driver_attr_interface_version.attr,
10796#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
10797 &driver_attr_wlsw_emulstate.attr,
10798 &driver_attr_bluetooth_emulstate.attr,
10799 &driver_attr_wwan_emulstate.attr,
10800 &driver_attr_uwb_emulstate.attr,
10801#endif
10802 NULL
10803};
10804
10805#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
10806static umode_t tpacpi_attr_is_visible(struct kobject *kobj,
10807 struct attribute *attr, int n)
3feb52a2 10808{
79f960e2
LB		 10809 if (attr == &driver_attr_wlsw_emulstate.attr) {
10810 if (!dbg_wlswemul)
10811 return 0;
10812 } else if (attr == &driver_attr_bluetooth_emulstate.attr) {
10813 if (!dbg_bluetoothemul)
10814 return 0;
10815 } else if (attr == &driver_attr_wwan_emulstate.attr) {
10816 if (!dbg_wwanemul)
10817 return 0;
10818 } else if (attr == &driver_attr_uwb_emulstate.attr) {
10819 if (!dbg_uwbemul)
10820 return 0;
10821 }
10822
10823 return attr->mode;
3feb52a2 10824}
79f960e2 10825#endif
3feb52a2 10826
5cd68968 10827static const struct attribute_group tpacpi_driver_attr_group = {
79f960e2
LB		 10828#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
10829 .is_visible = tpacpi_attr_is_visible,
10830#endif
5cd68968
HG		 10831 .attrs = tpacpi_driver_attributes,
10832};
10833
10834static const struct attribute_group *tpacpi_driver_groups[] = {
10835 &tpacpi_driver_attr_group,
10836 NULL,
79f960e2
LB		 10837};
10838
10839static const struct attribute_group *tpacpi_groups[] = {
10840 &adaptive_kbd_attr_group,
10841 &hotkey_attr_group,
10842 &bluetooth_attr_group,
10843 &wan_attr_group,
10844 &cmos_attr_group,
10845 &proxsensor_attr_group,
10846 &kbdlang_attr_group,
10847 &dprc_attr_group,
79f960e2
LB		 10848 NULL,
10849};
10850
10851static const struct attribute_group *tpacpi_hwmon_groups[] = {
10852 &thermal_attr_group,
10853 &temp_label_attr_group,
10854 &fan_attr_group,
10855 NULL,
10856};
10857
5cd68968
HG		 10858static const struct attribute_group *tpacpi_hwmon_driver_groups[] = {
10859 &fan_driver_attr_group,
10860 NULL,
10861};
10862
79f960e2
LB		 10863/****************************************************************************
10864 ****************************************************************************
10865 *
10866 * Platform drivers
10867 *
10868 ****************************************************************************
10869 ****************************************************************************/
10870
10871static struct platform_driver tpacpi_pdriver = {
10872 .driver = {
10873 .name = TPACPI_DRVR_NAME,
10874 .pm = &tpacpi_pm,
5cd68968 10875 .groups = tpacpi_driver_groups,
79f960e2
LB		 10876 .dev_groups = tpacpi_groups,
10877 },
10878 .shutdown = tpacpi_shutdown_handler,
10879};
10880
10881static struct platform_driver tpacpi_hwmon_pdriver = {
10882 .driver = {
10883 .name = TPACPI_HWMON_DRVR_NAME,
5cd68968 10884 .groups = tpacpi_hwmon_driver_groups,
79f960e2 10885 },
3feb52a2
NJ		 10886};
10887
56b6aeb0
HMH		 10888/****************************************************************************
10889 ****************************************************************************
10890 *
10891 * Infrastructure
10892 *
10893 ****************************************************************************
10894 ****************************************************************************/
10895
8b468c0c
HMH		 10896/*
10897 * HKEY event callout for other subdrivers go here
10898 * (yes, it is ugly, but it is quick, safe, and gets the job done
10899 */
10900static void tpacpi_driver_event(const unsigned int hkey_event)
10901{
347a2686
HMH		 10902 if (ibm_backlight_device) {
10903 switch (hkey_event) {
10904 case TP_HKEY_EV_BRGHT_UP:
10905 case TP_HKEY_EV_BRGHT_DOWN:
10906 tpacpi_brightness_notify_change();
10907 }
10908 }
0d204c34
HMH		 10909 if (alsa_card) {
10910 switch (hkey_event) {
10911 case TP_HKEY_EV_VOL_UP:
10912 case TP_HKEY_EV_VOL_DOWN:
10913 case TP_HKEY_EV_VOL_MUTE:
10914 volume_alsa_notify_change();
10915 }
10916 }
c685e20d
HG		 10917 if (tp_features.kbdlight && hkey_event == TP_HKEY_EV_KBD_LIGHT) {
10918 enum led_brightness brightness;
10919
10920 mutex_lock(&kbdlight_mutex);
10921
10922 /*
10923 * Check the brightness actually changed, setting the brightness
10924 * through kbdlight_set_level() also triggers this event.
10925 */
10926 brightness = kbdlight_sysfs_get(NULL);
10927 if (kbdlight_brightness != brightness) {
10928 kbdlight_brightness = brightness;
10929 led_classdev_notify_brightness_hw_changed(
10930 &tpacpi_led_kbdlight.led_classdev, brightness);
10931 }
10932
10933 mutex_unlock(&kbdlight_mutex);
10934 }
acf7f4a5 10935
c3bfcd4c 10936 if (hkey_event == TP_HKEY_EV_THM_CSM_COMPLETED) {
1ac09656 10937 lapsensor_refresh();
c3bfcd4c
MP		 10938 /* If we are already accessing DYTC then skip dytc update */
10939 if (!atomic_add_unless(&dytc_ignore_event, -1, 0))
10940 dytc_profile_refresh();
c3bfcd4c 10941 }
f809891e
HG		 10942
10943 if (lcdshadow_dev && hkey_event == TP_HKEY_EV_PRIVACYGUARD_TOGGLE) {
10944 enum drm_privacy_screen_status old_hw_state;
10945 bool changed;
10946
10947 mutex_lock(&lcdshadow_dev->lock);
10948 old_hw_state = lcdshadow_dev->hw_state;
10949 lcdshadow_get_hw_state(lcdshadow_dev);
10950 changed = lcdshadow_dev->hw_state != old_hw_state;
10951 mutex_unlock(&lcdshadow_dev->lock);
10952
10953 if (changed)
10954 drm_privacy_screen_call_notifier_chain(lcdshadow_dev);
10955 }
867eb713
MP		 10956 if (hkey_event == TP_HKEY_EV_AMT_TOGGLE) {
10957 /* If we're enabling AMT we need to force balanced mode */
10958 if (!dytc_amt_active)
10959 /* This will also set AMT mode enabled */
10960 dytc_profile_set(NULL, PLATFORM_PROFILE_BALANCED);
10961 else
10962 dytc_control_amt(!dytc_amt_active);
10963 }
10964
8b468c0c
HMH		 10965}
10966
8b468c0c
HMH		 10967static void hotkey_driver_event(const unsigned int scancode)
10968{
67bcae6e 10969 tpacpi_driver_event(TP_HKEY_EV_HOTKEY_BASE + scancode);
8b468c0c
HMH		 10970}
10971
7fd40029
HMH		 10972/* --------------------------------------------------------------------- */
10973
56b6aeb0 10974/* /proc support */
94954cc6 10975static struct proc_dir_entry *proc_dir;
16663a87 10976
56b6aeb0
HMH		 10977/*
10978 * Module and infrastructure proble, init and exit handling
10979 */
1da177e4 10980
90ab5ee9 10981static bool force_load;
b21a15f6 10982
fe08bc4b 10983#ifdef CONFIG_THINKPAD_ACPI_DEBUG
a5763f22 10984static const char * __init str_supported(int is_supported)
fe08bc4b 10985{
a5763f22 10986 static char text_unsupported[] __initdata = "not supported";
fe08bc4b 10987
72a979f0 10988 return (is_supported) ? &text_unsupported[4] : &text_unsupported[0];
fe08bc4b
HMH		 10989}
10990#endif /* CONFIG_THINKPAD_ACPI_DEBUG */
10991
b21a15f6
HMH		 10992static void ibm_exit(struct ibm_struct *ibm)
10993{
10994 dbg_printk(TPACPI_DBG_EXIT, "removing %s\n", ibm->name);
10995
10996 list_del_init(&ibm->all_drivers);
10997
10998 if (ibm->flags.acpi_notify_installed) {
10999 dbg_printk(TPACPI_DBG_EXIT,
11000 "%s: acpi_remove_notify_handler\n", ibm->name);
11001 BUG_ON(!ibm->acpi);
11002 acpi_remove_notify_handler(*ibm->acpi->handle,
11003 ibm->acpi->type,
11004 dispatch_acpi_notify);
11005 ibm->flags.acpi_notify_installed = 0;
b21a15f6
HMH		 11006 }
11007
11008 if (ibm->flags.proc_created) {
11009 dbg_printk(TPACPI_DBG_EXIT,
11010 "%s: remove_proc_entry\n", ibm->name);
11011 remove_proc_entry(ibm->name, proc_dir);
11012 ibm->flags.proc_created = 0;
11013 }
11014
11015 if (ibm->flags.acpi_driver_registered) {
11016 dbg_printk(TPACPI_DBG_EXIT,
11017 "%s: acpi_bus_unregister_driver\n", ibm->name);
11018 BUG_ON(!ibm->acpi);
11019 acpi_bus_unregister_driver(ibm->acpi->driver);
11020 kfree(ibm->acpi->driver);
11021 ibm->acpi->driver = NULL;
11022 ibm->flags.acpi_driver_registered = 0;
11023 }
11024
11025 if (ibm->flags.init_called && ibm->exit) {
11026 ibm->exit();
11027 ibm->flags.init_called = 0;
11028 }
11029
11030 dbg_printk(TPACPI_DBG_INIT, "finished removing %s\n", ibm->name);
11031}
f74a27d4 11032
a5763f22 11033static int __init ibm_init(struct ibm_init_struct *iibm)
1da177e4
LT		 11034{
11035 int ret;
a5763f22 11036 struct ibm_struct *ibm = iibm->data;
1da177e4
LT		 11037 struct proc_dir_entry *entry;
11038
a5763f22
HMH		 11039 BUG_ON(ibm == NULL);
11040
11041 INIT_LIST_HEAD(&ibm->all_drivers);
11042
92641177 11043 if (ibm->flags.experimental && !experimental)
1da177e4
LT		 11044 return 0;
11045
fe08bc4b
HMH		 11046 dbg_printk(TPACPI_DBG_INIT,
11047 "probing for %s\n", ibm->name);
11048
a5763f22
HMH		 11049 if (iibm->init) {
11050 ret = iibm->init(iibm);
c15f8685
HG		 11051 if (ret > 0 || ret == -ENODEV)
11052 return 0; /* subdriver functionality not available */
5fba344c 11053 if (ret)
1da177e4 11054 return ret;
a5763f22 11055
92641177 11056 ibm->flags.init_called = 1;
1da177e4
LT		 11057 }
11058
8d376cd6
HMH		 11059 if (ibm->acpi) {
11060 if (ibm->acpi->hid) {
11061 ret = register_tpacpi_subdriver(ibm);
11062 if (ret)
11063 goto err_out;
11064 }
5fba344c 11065
8d376cd6
HMH		 11066 if (ibm->acpi->notify) {
11067 ret = setup_acpi_notify(ibm);
11068 if (ret == -ENODEV) {
0978e012
JP		 11069 pr_notice("disabling subdriver %s\n",
11070 ibm->name);
8d376cd6
HMH		 11071 ret = 0;
11072 goto err_out;
11073 }
11074 if (ret < 0)
11075 goto err_out;
5fba344c 11076 }
5fba344c
HMH		 11077 }
11078
fe08bc4b
HMH		 11079 dbg_printk(TPACPI_DBG_INIT,
11080 "%s installed\n", ibm->name);
11081
78f81cc4 11082 if (ibm->read) {
d161a13f 11083 umode_t mode = iibm->base_procfs_mode;
887965e6 11084
b525c06c
HMH		 11085 if (!mode)
11086 mode = S_IRUGO;
887965e6
AD		 11087 if (ibm->write)
11088 mode |= S_IWUSR;
11089 entry = proc_create_data(ibm->name, mode, proc_dir,
97a32539 11090 &dispatch_proc_ops, ibm);
78f81cc4 11091 if (!entry) {
0978e012 11092 pr_err("unable to create proc entry %s\n", ibm->name);
5fba344c
HMH		 11093 ret = -ENODEV;
11094 goto err_out;
78f81cc4 11095 }
92641177 11096 ibm->flags.proc_created = 1;
78f81cc4 11097 }
1da177e4 11098
a5763f22
HMH		 11099 list_add_tail(&ibm->all_drivers, &tpacpi_all_drivers);
11100
1da177e4 11101 return 0;
5fba344c
HMH		 11102
11103err_out:
fe08bc4b
HMH		 11104 dbg_printk(TPACPI_DBG_INIT,
11105 "%s: at error exit path with result %d\n",
11106 ibm->name, ret);
11107
5fba344c 11108 ibm_exit(ibm);
72a979f0 11109 return (ret < 0) ? ret : 0;
1da177e4
LT		 11110}
11111
56b6aeb0
HMH		 11112/* Probing */
11113
846a416b
JW		 11114static char __init tpacpi_parse_fw_id(const char * const s,
11115 u32 *model, u16 *release)
050df107 11116{
846a416b
JW		 11117 int i;
11118
11119 if (!s || strlen(s) < 8)
11120 goto invalid;
11121
11122 for (i = 0; i < 8; i++)
11123 if (!((s[i] >= '0' && s[i] <= '9') ||
11124 (s[i] >= 'A' && s[i] <= 'Z')))
11125 goto invalid;
050df107 11126
1b0eb5bc
AL		 11127 /*
11128 * Most models: xxyTkkWW (#.##c)
11129 * Ancient 570/600 and -SL lacks (#.##c)
11130 */
846a416b
JW		 11131 if (s[3] == 'T' || s[3] == 'N') {
11132 *model = TPID(s[0], s[1]);
11133 *release = TPVER(s[4], s[5]);
11134 return s[2];
1b0eb5bc
AL		 11135
11136 /* New models: xxxyTkkW (#.##c); T550 and some others */
846a416b
JW		 11137 } else if (s[4] == 'T' || s[4] == 'N') {
11138 *model = TPID3(s[0], s[1], s[2]);
11139 *release = TPVER(s[5], s[6]);
11140 return s[3];
11141 }
11142
11143invalid:
11144 return '\0';
050df107
HMH		 11145}
11146
9a4b33d4
JY		 11147static void find_new_ec_fwstr(const struct dmi_header *dm, void *private)
11148{
11149 char *ec_fw_string = (char *) private;
11150 const char *dmi_data = (const char *)dm;
11151 /*
11152 * ThinkPad Embedded Controller Program Table on newer models
11153 *
11154 * Offset | Name | Width | Description
11155 * ----------------------------------------------------
11156 * 0x00 | Type | BYTE | 0x8C
11157 * 0x01 | Length | BYTE |
11158 * 0x02 | Handle | WORD | Varies
11159 * 0x04 | Signature | BYTEx6 | ASCII for "LENOVO"
11160 * 0x0A | OEM struct offset | BYTE | 0x0B
11161 * 0x0B | OEM struct number | BYTE | 0x07, for this structure
11162 * 0x0C | OEM struct revision | BYTE | 0x01, for this format
11163 * 0x0D | ECP version ID | STR ID |
11164 * 0x0E | ECP release date | STR ID |
11165 */
11166
11167 /* Return if data structure not match */
11168 if (dm->type != 140 || dm->length < 0x0F ||
11169 memcmp(dmi_data + 4, "LENOVO", 6) != 0 ||
11170 dmi_data[0x0A] != 0x0B || dmi_data[0x0B] != 0x07 ||
11171 dmi_data[0x0C] != 0x01)
11172 return;
11173
11174 /* fwstr is the first 8byte string */
11175 strncpy(ec_fw_string, dmi_data + 0x0F, 8);
11176}
11177
bf20e740
HMH		 11178/* returns 0 - probe ok, or < 0 - probe error.
11179 * Probe ok doesn't mean thinkpad found.
11180 * On error, kfree() cleanup on tp->* is not performed, caller must do it */
11181static int __must_check __init get_thinkpad_model_data(
11182 struct thinkpad_id_data *tp)
1da177e4 11183{
1855256c 11184 const struct dmi_device *dev = NULL;
9a4b33d4 11185 char ec_fw_string[18] = {0};
bf20e740 11186 char const *s;
846a416b 11187 char t;
1da177e4 11188
d5a2f2f1 11189 if (!tp)
bf20e740 11190 return -EINVAL;
d5a2f2f1
HMH		 11191
11192 memset(tp, 0, sizeof(*tp));
11193
11194 if (dmi_name_in_vendors("IBM"))
11195 tp->vendor = PCI_VENDOR_ID_IBM;
11196 else if (dmi_name_in_vendors("LENOVO"))
11197 tp->vendor = PCI_VENDOR_ID_LENOVO;
11198 else
bf20e740 11199 return 0;
d5a2f2f1 11200
bf20e740
HMH		 11201 s = dmi_get_system_info(DMI_BIOS_VERSION);
11202 tp->bios_version_str = kstrdup(s, GFP_KERNEL);
11203 if (s && !tp->bios_version_str)
11204 return -ENOMEM;
050df107
HMH		 11205
11206 /* Really ancient ThinkPad 240X will fail this, which is fine */
846a416b
JW		 11207 t = tpacpi_parse_fw_id(tp->bios_version_str,
11208 &tp->bios_model, &tp->bios_release);
11209 if (t != 'E' && t != 'C')
bf20e740 11210 return 0;
050df107 11211
56b6aeb0
HMH		 11212 /*
11213 * ThinkPad T23 or newer, A31 or newer, R50e or newer,
11214 * X32 or newer, all Z series; Some models must have an
11215 * up-to-date BIOS or they will not be detected.
11216 *
19206a1e 11217 * See https://thinkwiki.org/wiki/List_of_DMI_IDs
56b6aeb0
HMH		 11218 */
11219 while ((dev = dmi_find_device(DMI_DEV_TYPE_OEM_STRING, NULL, dev))) {
11220 if (sscanf(dev->name,
11221 "IBM ThinkPad Embedded Controller -[%17c",
11222 ec_fw_string) == 1) {
11223 ec_fw_string[sizeof(ec_fw_string) - 1] = 0;
11224 ec_fw_string[strcspn(ec_fw_string, " ]")] = 0;
d5a2f2f1 11225 break;
78f81cc4 11226 }
1da177e4 11227 }
d5a2f2f1 11228
9a4b33d4
JY		 11229 /* Newer ThinkPads have different EC program info table */
11230 if (!ec_fw_string[0])
11231 dmi_walk(find_new_ec_fwstr, &ec_fw_string);
11232
11233 if (ec_fw_string[0]) {
11234 tp->ec_version_str = kstrdup(ec_fw_string, GFP_KERNEL);
11235 if (!tp->ec_version_str)
11236 return -ENOMEM;
11237
11238 t = tpacpi_parse_fw_id(ec_fw_string,
11239 &tp->ec_model, &tp->ec_release);
11240 if (t != 'H') {
11241 pr_notice("ThinkPad firmware release %s doesn't match the known patterns\n",
11242 ec_fw_string);
11243 pr_notice("please report this to %s\n", TPACPI_MAIL);
11244 }
11245 }
11246
bf20e740 11247 s = dmi_get_system_info(DMI_PRODUCT_VERSION);
40f5c777 11248 if (s && !(strncasecmp(s, "ThinkPad", 8) && strncasecmp(s, "Lenovo", 6))) {
bf20e740
HMH		 11249 tp->model_str = kstrdup(s, GFP_KERNEL);
11250 if (!tp->model_str)
11251 return -ENOMEM;
a4f46bb9
MI		 11252 } else {
11253 s = dmi_get_system_info(DMI_BIOS_VENDOR);
40f5c777 11254 if (s && !(strncasecmp(s, "Lenovo", 6))) {
a4f46bb9
MI		 11255 tp->model_str = kstrdup(s, GFP_KERNEL);
11256 if (!tp->model_str)
11257 return -ENOMEM;
11258 }
d5a2f2f1 11259 }
8c74adbc 11260
bf20e740
HMH		 11261 s = dmi_get_system_info(DMI_PRODUCT_NAME);
11262 tp->nummodel_str = kstrdup(s, GFP_KERNEL);
11263 if (s && !tp->nummodel_str)
11264 return -ENOMEM;
11265
11266 return 0;
1da177e4
LT		 11267}
11268
5fba344c
HMH		 11269static int __init probe_for_thinkpad(void)
11270{
11271 int is_thinkpad;
11272
11273 if (acpi_disabled)
11274 return -ENODEV;
11275
e28393c0
HMH		 11276 /* It would be dangerous to run the driver in this case */
11277 if (!tpacpi_is_ibm() && !tpacpi_is_lenovo())
11278 return -ENODEV;
11279
5fba344c
HMH		 11280 /*
11281 * Non-ancient models have better DMI tagging, but very old models
e675abaf 11282 * don't. tpacpi_is_fw_known() is a cheat to help in that case.
5fba344c 11283 */
e675abaf
HMH		 11284 is_thinkpad = (thinkpad_id.model_str != NULL) ||
11285 (thinkpad_id.ec_model != 0) ||
11286 tpacpi_is_fw_known();
5fba344c 11287
437e470c
HMH		 11288 /* The EC handler is required */
11289 tpacpi_acpi_handle_locate("ec", TPACPI_ACPI_EC_HID, &ec_handle);
5fba344c
HMH		 11290 if (!ec_handle) {
11291 if (is_thinkpad)
0978e012 11292 pr_err("Not yet supported ThinkPad detected!\n");
5fba344c
HMH		 11293 return -ENODEV;
11294 }
11295
0dcef77c
HMH		 11296 if (!is_thinkpad && !force_load)
11297 return -ENODEV;
11298
5fba344c
HMH		 11299 return 0;
11300}
11301
7a43f788
HMH		 11302static void __init thinkpad_acpi_init_banner(void)
11303{
0978e012
JP		 11304 pr_info("%s v%s\n", TPACPI_DESC, TPACPI_VERSION);
11305 pr_info("%s\n", TPACPI_URL);
7a43f788 11306
0978e012 11307 pr_info("ThinkPad BIOS %s, EC %s\n",
7a43f788
HMH		 11308 (thinkpad_id.bios_version_str) ?
11309 thinkpad_id.bios_version_str : "unknown",
11310 (thinkpad_id.ec_version_str) ?
11311 thinkpad_id.ec_version_str : "unknown");
11312
11313 BUG_ON(!thinkpad_id.vendor);
11314
11315 if (thinkpad_id.model_str)
0978e012 11316 pr_info("%s %s, model %s\n",
7a43f788
HMH		 11317 (thinkpad_id.vendor == PCI_VENDOR_ID_IBM) ?
11318 "IBM" : ((thinkpad_id.vendor ==
11319 PCI_VENDOR_ID_LENOVO) ?
11320 "Lenovo" : "Unknown vendor"),
11321 thinkpad_id.model_str,
11322 (thinkpad_id.nummodel_str) ?
11323 thinkpad_id.nummodel_str : "unknown");
11324}
5fba344c 11325
56b6aeb0 11326/* Module init, exit, parameters */
1da177e4 11327
a5763f22
HMH		 11328static struct ibm_init_struct ibms_init[] __initdata = {
11329 {
a5763f22
HMH		 11330 .data = &thinkpad_acpi_driver_data,
11331 },
11332 {
11333 .init = hotkey_init,
11334 .data = &hotkey_driver_data,
11335 },
11336 {
11337 .init = bluetooth_init,
11338 .data = &bluetooth_driver_data,
11339 },
11340 {
11341 .init = wan_init,
11342 .data = &wan_driver_data,
11343 },
0045c0aa
HMH		 11344 {
11345 .init = uwb_init,
11346 .data = &uwb_driver_data,
11347 },
d7c1d17d 11348#ifdef CONFIG_THINKPAD_ACPI_VIDEO
a5763f22
HMH		 11349 {
11350 .init = video_init,
b525c06c 11351 .base_procfs_mode = S_IRUSR,
a5763f22
HMH		 11352 .data = &video_driver_data,
11353 },
d7c1d17d 11354#endif
bb28f3d5
PR		 11355 {
11356 .init = kbdlight_init,
11357 .data = &kbdlight_driver_data,
11358 },
a5763f22
HMH		 11359 {
11360 .init = light_init,
11361 .data = &light_driver_data,
11362 },
a5763f22
HMH		 11363 {
11364 .init = cmos_init,
11365 .data = &cmos_driver_data,
11366 },
11367 {
11368 .init = led_init,
11369 .data = &led_driver_data,
11370 },
11371 {
11372 .init = beep_init,
11373 .data = &beep_driver_data,
11374 },
11375 {
11376 .init = thermal_init,
11377 .data = &thermal_driver_data,
11378 },
a5763f22
HMH		 11379 {
11380 .init = brightness_init,
11381 .data = &brightness_driver_data,
11382 },
11383 {
329e4e18 11384 .init = volume_init,
a5763f22
HMH		 11385 .data = &volume_driver_data,
11386 },
11387 {
11388 .init = fan_init,
11389 .data = &fan_driver_data,
11390 },
420f9739
DH		 11391 {
11392 .init = mute_led_init,
11393 .data = &mute_led_driver_data,
11394 },
2801b968
OG		 11395 {
11396 .init = tpacpi_battery_init,
11397 .data = &battery_driver_data,
11398 },
110ea1d8
AS		 11399 {
11400 .init = tpacpi_lcdshadow_init,
11401 .data = &lcdshadow_driver_data,
11402 },
acf7f4a5 11403 {
1ac09656
MP		 11404 .init = tpacpi_proxsensor_init,
11405 .data = &proxsensor_driver_data,
acf7f4a5 11406 },
c3bfcd4c
MP		 11407 {
11408 .init = tpacpi_dytc_profile_init,
11409 .data = &dytc_profile_driver_data,
11410 },
d7cbe277
NJ		 11411 {
11412 .init = tpacpi_kbdlang_init,
11413 .data = &kbdlang_driver_data,
11414 },
3feb52a2
NJ		 11415 {
11416 .init = tpacpi_dprc_init,
11417 .data = &dprc_driver_data,
11418 },
a5763f22
HMH		 11419};
11420
e4dca7b7 11421static int __init set_ibm_param(const char *val, const struct kernel_param *kp)
1da177e4
LT		 11422{
11423 unsigned int i;
a5763f22 11424 struct ibm_struct *ibm;
1da177e4 11425
59f91ff1
HMH		 11426 if (!kp || !kp->name || !val)
11427 return -EINVAL;
11428
a5763f22
HMH		 11429 for (i = 0; i < ARRAY_SIZE(ibms_init); i++) {
11430 ibm = ibms_init[i].data;
59f91ff1
HMH		 11431 if (!ibm || !ibm->name)
11432 continue;
a5763f22
HMH		 11433
11434 if (strcmp(ibm->name, kp->name) == 0 && ibm->write) {
be51bd45 11435 if (strlen(val) > sizeof(ibms_init[i].param) - 1)
78f81cc4 11436 return -ENOSPC;
a5763f22 11437 strcpy(ibms_init[i].param, val);
78f81cc4
BD		 11438 return 0;
11439 }
a5763f22 11440 }
1da177e4 11441
1da177e4
LT		 11442 return -EINVAL;
11443}
11444
b09c7225 11445module_param(experimental, int, 0444);
f68080f8 11446MODULE_PARM_DESC(experimental,
35ff8b9f 11447 "Enables experimental features when non-zero");
56b6aeb0 11448
132ce091 11449module_param_named(debug, dbg_level, uint, 0);
f68080f8 11450MODULE_PARM_DESC(debug, "Sets debug level bit-mask");
132ce091 11451
b09c7225 11452module_param(force_load, bool, 0444);
f68080f8 11453MODULE_PARM_DESC(force_load,
5cac62ac 11454 "Attempts to load the driver even on a mis-identified ThinkPad when true");
0dcef77c 11455
b09c7225 11456module_param_named(fan_control, fan_control_allowed, bool, 0444);
f68080f8 11457MODULE_PARM_DESC(fan_control,
35ff8b9f 11458 "Enables setting fan parameters features when true");
ecf2a80a 11459
b09c7225 11460module_param_named(brightness_mode, brightness_mode, uint, 0444);
f68080f8 11461MODULE_PARM_DESC(brightness_mode,
5cac62ac 11462 "Selects brightness control strategy: 0=auto, 1=EC, 2=UCMS, 3=EC+NVRAM");
24d3b774 11463
b09c7225 11464module_param(brightness_enable, uint, 0444);
f68080f8 11465MODULE_PARM_DESC(brightness_enable,
35ff8b9f 11466 "Enables backlight control when 1, disables when 0");
87cc537a 11467
ff850c33 11468#ifdef CONFIG_THINKPAD_ACPI_ALSA_SUPPORT
329e4e18
HMH		 11469module_param_named(volume_mode, volume_mode, uint, 0444);
11470MODULE_PARM_DESC(volume_mode,
5cac62ac 11471 "Selects volume control strategy: 0=auto, 1=EC, 2=N/A, 3=EC+NVRAM");
329e4e18 11472
a112ceee
HMH		 11473module_param_named(volume_capabilities, volume_capabilities, uint, 0444);
11474MODULE_PARM_DESC(volume_capabilities,
d33a7e57 11475 "Selects the mixer capabilities: 0=auto, 1=volume and mute, 2=mute only");
a112ceee 11476
c7ac6291
HMH		 11477module_param_named(volume_control, volume_control_allowed, bool, 0444);
11478MODULE_PARM_DESC(volume_control,
5cac62ac 11479 "Enables software override for the console audio control when true");
c7ac6291 11480
9a417ec0
AL		 11481module_param_named(software_mute, software_mute_requested, bool, 0444);
11482MODULE_PARM_DESC(software_mute,
11483 "Request full software mute control");
11484
0d204c34
HMH		 11485/* ALSA module API parameters */
11486module_param_named(index, alsa_index, int, 0444);
11487MODULE_PARM_DESC(index, "ALSA index for the ACPI EC Mixer");
11488module_param_named(id, alsa_id, charp, 0444);
11489MODULE_PARM_DESC(id, "ALSA id for the ACPI EC Mixer");
11490module_param_named(enable, alsa_enable, bool, 0444);
11491MODULE_PARM_DESC(enable, "Enable the ALSA interface for the ACPI EC Mixer");
ff850c33 11492#endif /* CONFIG_THINKPAD_ACPI_ALSA_SUPPORT */
0d204c34 11493
9b4bbbd2 11494/* The module parameter can't be read back, that's why 0 is used here */
e0c7dfe7 11495#define TPACPI_PARAM(feature) \
f68080f8 11496 module_param_call(feature, set_ibm_param, NULL, NULL, 0); \
5cac62ac 11497 MODULE_PARM_DESC(feature, "Simulates thinkpad-acpi procfs command at module load, see documentation")
1da177e4 11498
e0c7dfe7
HMH		 11499TPACPI_PARAM(hotkey);
11500TPACPI_PARAM(bluetooth);
11501TPACPI_PARAM(video);
11502TPACPI_PARAM(light);
e0c7dfe7
HMH		 11503TPACPI_PARAM(cmos);
11504TPACPI_PARAM(led);
11505TPACPI_PARAM(beep);
e0c7dfe7
HMH		 11506TPACPI_PARAM(brightness);
11507TPACPI_PARAM(volume);
11508TPACPI_PARAM(fan);
78f81cc4 11509
a73f3091 11510#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
b09c7225 11511module_param(dbg_wlswemul, uint, 0444);
a73f3091
HMH		 11512MODULE_PARM_DESC(dbg_wlswemul, "Enables WLSW emulation");
11513module_param_named(wlsw_state, tpacpi_wlsw_emulstate, bool, 0);
11514MODULE_PARM_DESC(wlsw_state,
11515 "Initial state of the emulated WLSW switch");
11516
b09c7225 11517module_param(dbg_bluetoothemul, uint, 0444);
a73f3091
HMH		 11518MODULE_PARM_DESC(dbg_bluetoothemul, "Enables bluetooth switch emulation");
11519module_param_named(bluetooth_state, tpacpi_bluetooth_emulstate, bool, 0);
11520MODULE_PARM_DESC(bluetooth_state,
11521 "Initial state of the emulated bluetooth switch");
11522
b09c7225 11523module_param(dbg_wwanemul, uint, 0444);
a73f3091
HMH		 11524MODULE_PARM_DESC(dbg_wwanemul, "Enables WWAN switch emulation");
11525module_param_named(wwan_state, tpacpi_wwan_emulstate, bool, 0);
11526MODULE_PARM_DESC(wwan_state,
11527 "Initial state of the emulated WWAN switch");
0045c0aa 11528
b09c7225 11529module_param(dbg_uwbemul, uint, 0444);
0045c0aa
HMH		 11530MODULE_PARM_DESC(dbg_uwbemul, "Enables UWB switch emulation");
11531module_param_named(uwb_state, tpacpi_uwb_emulstate, bool, 0);
11532MODULE_PARM_DESC(uwb_state,
11533 "Initial state of the emulated UWB switch");
a73f3091
HMH		 11534#endif
11535
16848789
MP		 11536module_param(profile_force, int, 0444);
11537MODULE_PARM_DESC(profile_force, "Force profile mode. -1=off, 1=MMC, 2=PSC");
11538
b21a15f6
HMH		 11539static void thinkpad_acpi_module_exit(void)
11540{
11541 struct ibm_struct *ibm, *itmp;
11542
11543 tpacpi_lifecycle = TPACPI_LIFE_EXITING;
11544
526ac103
HG		 11545 if (tpacpi_hwmon)
11546 hwmon_device_unregister(tpacpi_hwmon);
2f5ad08f
HG		 11547 if (tp_features.sensors_pdrv_registered)
11548 platform_driver_unregister(&tpacpi_hwmon_pdriver);
11549 if (tp_features.platform_drv_registered)
11550 platform_driver_unregister(&tpacpi_pdriver);
11551
b21a15f6
HMH		 11552 list_for_each_entry_safe_reverse(ibm, itmp,
11553 &tpacpi_all_drivers,
11554 all_drivers) {
11555 ibm_exit(ibm);
11556 }
11557
11558 dbg_printk(TPACPI_DBG_INIT, "finished subdriver exit path...\n");
11559
11560 if (tpacpi_inputdev) {
11561 if (tp_features.input_device_registered)
11562 input_unregister_device(tpacpi_inputdev);
11563 else
11564 input_free_device(tpacpi_inputdev);
00d39597 11565 kfree(hotkey_keycode_map);
b21a15f6
HMH		 11566 }
11567
b21a15f6
HMH		 11568 if (tpacpi_sensors_pdev)
11569 platform_device_unregister(tpacpi_sensors_pdev);
11570 if (tpacpi_pdev)
11571 platform_device_unregister(tpacpi_pdev);
b21a15f6 11572 if (proc_dir)
e0c7dfe7 11573 remove_proc_entry(TPACPI_PROC_DIR, acpi_root_dir);
e0e3c061
HMH		 11574 if (tpacpi_wq)
11575 destroy_workqueue(tpacpi_wq);
11576
b21a15f6
HMH		 11577 kfree(thinkpad_id.bios_version_str);
11578 kfree(thinkpad_id.ec_version_str);
11579 kfree(thinkpad_id.model_str);
d2be15bd 11580 kfree(thinkpad_id.nummodel_str);
b21a15f6
HMH		 11581}
11582
f74a27d4 11583
1def7115 11584static int __init thinkpad_acpi_module_init(void)
1da177e4 11585{
c25d7f32 11586 const struct dmi_system_id *dmi_id;
1da177e4 11587 int ret, i;
3a133f7c 11588 acpi_object_type obj_type;
1da177e4 11589
8fef502e
HMH		 11590 tpacpi_lifecycle = TPACPI_LIFE_INIT;
11591
54ae1501 11592 /* Driver-level probe */
d5a2f2f1 11593
bf20e740
HMH		 11594 ret = get_thinkpad_model_data(&thinkpad_id);
11595 if (ret) {
0978e012 11596 pr_err("unable to get DMI data: %d\n", ret);
bf20e740
HMH		 11597 thinkpad_acpi_module_exit();
11598 return ret;
11599 }
5fba344c 11600 ret = probe_for_thinkpad();
d5a2f2f1
HMH		 11601 if (ret) {
11602 thinkpad_acpi_module_exit();
5fba344c 11603 return ret;
d5a2f2f1 11604 }
1da177e4 11605
54ae1501 11606 /* Driver initialization */
d5a2f2f1 11607
7a43f788
HMH		 11608 thinkpad_acpi_init_banner();
11609 tpacpi_check_outdated_fw();
11610
e0c7dfe7
HMH		 11611 TPACPI_ACPIHANDLE_INIT(ecrd);
11612 TPACPI_ACPIHANDLE_INIT(ecwr);
1da177e4 11613
3a133f7c
DB		 11614 /*
11615 * Quirk: in some models (e.g. X380 Yoga), an object named ECRD
11616 * exists, but it is a register, not a method.
11617 */
11618 if (ecrd_handle) {
11619 acpi_get_type(ecrd_handle, &obj_type);
11620 if (obj_type != ACPI_TYPE_METHOD)
11621 ecrd_handle = NULL;
11622 }
11623 if (ecwr_handle) {
11624 acpi_get_type(ecwr_handle, &obj_type);
11625 if (obj_type != ACPI_TYPE_METHOD)
11626 ecwr_handle = NULL;
11627 }
11628
e0e3c061
HMH		 11629 tpacpi_wq = create_singlethread_workqueue(TPACPI_WORKQUEUE_NAME);
11630 if (!tpacpi_wq) {
11631 thinkpad_acpi_module_exit();
11632 return -ENOMEM;
11633 }
11634
e0c7dfe7 11635 proc_dir = proc_mkdir(TPACPI_PROC_DIR, acpi_root_dir);
1da177e4 11636 if (!proc_dir) {
0978e012 11637 pr_err("unable to create proc dir " TPACPI_PROC_DIR "\n");
1def7115 11638 thinkpad_acpi_module_exit();
1da177e4
LT		 11639 return -ENODEV;
11640 }
78f81cc4 11641
c25d7f32
ML		 11642 dmi_id = dmi_first_match(fwbug_list);
11643 if (dmi_id)
11644 tp_features.quirks = dmi_id->driver_data;
11645
54ae1501 11646 /* Device initialization */
8d05fc03 11647 tpacpi_pdev = platform_device_register_simple(TPACPI_DRVR_NAME, PLATFORM_DEVID_NONE,
54ae1501
HMH		 11648 NULL, 0);
11649 if (IS_ERR(tpacpi_pdev)) {
11650 ret = PTR_ERR(tpacpi_pdev);
11651 tpacpi_pdev = NULL;
0978e012 11652 pr_err("unable to register platform device\n");
54ae1501
HMH		 11653 thinkpad_acpi_module_exit();
11654 return ret;
11655 }
7fd40029 11656 tpacpi_sensors_pdev = platform_device_register_simple(
35ff8b9f 11657 TPACPI_HWMON_DRVR_NAME,
8d05fc03 11658 PLATFORM_DEVID_NONE, NULL, 0);
7fd40029
HMH		 11659 if (IS_ERR(tpacpi_sensors_pdev)) {
11660 ret = PTR_ERR(tpacpi_sensors_pdev);
11661 tpacpi_sensors_pdev = NULL;
0978e012 11662 pr_err("unable to register hwmon platform device\n");
7fd40029
HMH		 11663 thinkpad_acpi_module_exit();
11664 return ret;
11665 }
6b99e356 11666
8523ed6f 11667 mutex_init(&tpacpi_inputdev_send_mutex);
7f5d1cd6
HMH		 11668 tpacpi_inputdev = input_allocate_device();
11669 if (!tpacpi_inputdev) {
7f5d1cd6
HMH		 11670 thinkpad_acpi_module_exit();
11671 return -ENOMEM;
11672 } else {
11673 /* Prepare input device, but don't register */
11674 tpacpi_inputdev->name = "ThinkPad Extra Buttons";
e0c7dfe7 11675 tpacpi_inputdev->phys = TPACPI_DRVR_NAME "/input0";
7f5d1cd6 11676 tpacpi_inputdev->id.bustype = BUS_HOST;
e28393c0 11677 tpacpi_inputdev->id.vendor = thinkpad_id.vendor;
7f5d1cd6
HMH		 11678 tpacpi_inputdev->id.product = TPACPI_HKEY_INPUT_PRODUCT;
11679 tpacpi_inputdev->id.version = TPACPI_HKEY_INPUT_VERSION;
d112ef95 11680 tpacpi_inputdev->dev.parent = &tpacpi_pdev->dev;
7f5d1cd6 11681 }
77775838
HMH		 11682
11683 /* Init subdriver dependencies */
11684 tpacpi_detect_brightness_capabilities();
11685
11686 /* Init subdrivers */
a5763f22
HMH		 11687 for (i = 0; i < ARRAY_SIZE(ibms_init); i++) {
11688 ret = ibm_init(&ibms_init[i]);
11689 if (ret >= 0 && *ibms_init[i].param)
11690 ret = ibms_init[i].data->write(ibms_init[i].param);
1da177e4 11691 if (ret < 0) {
1def7115 11692 thinkpad_acpi_module_exit();
1da177e4
LT		 11693 return ret;
11694 }
11695 }
b589ea4c
HMH		 11696
11697 tpacpi_lifecycle = TPACPI_LIFE_RUNNING;
11698
2f5ad08f
HG		 11699 ret = platform_driver_register(&tpacpi_pdriver);
11700 if (ret) {
11701 pr_err("unable to register main platform driver\n");
11702 thinkpad_acpi_module_exit();
11703 return ret;
11704 }
11705 tp_features.platform_drv_registered = 1;
11706
11707 ret = platform_driver_register(&tpacpi_hwmon_pdriver);
11708 if (ret) {
11709 pr_err("unable to register hwmon platform driver\n");
11710 thinkpad_acpi_module_exit();
11711 return ret;
11712 }
11713 tp_features.sensors_pdrv_registered = 1;
11714
526ac103
HG		 11715 tpacpi_hwmon = hwmon_device_register_with_groups(
11716 &tpacpi_sensors_pdev->dev, TPACPI_NAME, NULL, tpacpi_hwmon_groups);
11717 if (IS_ERR(tpacpi_hwmon)) {
11718 ret = PTR_ERR(tpacpi_hwmon);
11719 tpacpi_hwmon = NULL;
11720 pr_err("unable to register hwmon device\n");
11721 thinkpad_acpi_module_exit();
11722 return ret;
11723 }
11724
7f5d1cd6
HMH		 11725 ret = input_register_device(tpacpi_inputdev);
11726 if (ret < 0) {
0978e012 11727 pr_err("unable to register input device\n");
7f5d1cd6
HMH		 11728 thinkpad_acpi_module_exit();
11729 return ret;
11730 } else {
11731 tp_features.input_device_registered = 1;
11732 }
1da177e4
LT		 11733
11734 return 0;
11735}
11736
95e57ab2
HMH		 11737MODULE_ALIAS(TPACPI_DRVR_SHORTNAME);
11738
922fe097
HMH		 11739/*
11740 * This will autoload the driver in almost every ThinkPad
11741 * in widespread use.
11742 *
11743 * Only _VERY_ old models, like the 240, 240x and 570 lack
11744 * the HKEY event interface.
11745 */
11746MODULE_DEVICE_TABLE(acpi, ibm_htk_device_ids);
11747
f68080f8
HMH		 11748/*
11749 * DMI matching for module autoloading
11750 *
19206a1e
AK		 11751 * See https://thinkwiki.org/wiki/List_of_DMI_IDs
11752 * See https://thinkwiki.org/wiki/BIOS_Upgrade_Downloads
f68080f8
HMH		 11753 *
11754 * Only models listed in thinkwiki will be supported, so add yours
11755 * if it is not there yet.
11756 */
11757#define IBM_BIOS_MODULE_ALIAS(__type) \
b36a50f9 11758 MODULE_ALIAS("dmi:bvnIBM:bvr" __type "ET??WW*")
f68080f8 11759
f68080f8
HMH		 11760/* Ancient thinkpad BIOSes have to be identified by
11761 * BIOS type or model number, and there are far less
11762 * BIOS types than model numbers... */
922fe097 11763IBM_BIOS_MODULE_ALIAS("I[MU]"); /* 570, 570e */
f68080f8 11764
f68f53a2
HMH		 11765MODULE_AUTHOR("Borislav Deianov <borislav@users.sf.net>");
11766MODULE_AUTHOR("Henrique de Moraes Holschuh <hmh@hmh.eng.br>");
e0c7dfe7
HMH		 11767MODULE_DESCRIPTION(TPACPI_DESC);
11768MODULE_VERSION(TPACPI_VERSION);
f68080f8
HMH		 11769MODULE_LICENSE("GPL");
11770
1def7115
HMH		 11771module_init(thinkpad_acpi_module_init);
11772module_exit(thinkpad_acpi_module_exit);
Linux 6.x block layer and io_uring tree(s)