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[linux-2.6-block.git] / drivers / platform / x86 / thinkpad_acpi.c
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1da177e4 1/*
643f12db 2 * thinkpad_acpi.c - ThinkPad ACPI Extras
1da177e4
LT		 3 *
4 *
78f81cc4 5 * Copyright (C) 2004-2005 Borislav Deianov <borislav@users.sf.net>
1c762ca4 6 * Copyright (C) 2006-2009 Henrique de Moraes Holschuh <hmh@hmh.eng.br>
1da177e4
LT		 7 *
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
12 *
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
17 *
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
a62bc916
HMH		 20 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
21 * 02110-1301, USA.
78f81cc4
BD		 22 */
23
0978e012
JP		 24#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
25
2801b968 26#define TPACPI_VERSION "0.26"
6b99e356 27#define TPACPI_SYSFS_VERSION 0x030000
78f81cc4
BD		 28
29/*
1da177e4 30 * Changelog:
4b45cc07
HMH		 31 * 2007-10-20 changelog trimmed down
32 *
643f12db
HMH		 33 * 2007-03-27 0.14 renamed to thinkpad_acpi and moved to
34 * drivers/misc.
f9ff43a6
HMH		 35 *
36 * 2006-11-22 0.13 new maintainer
37 * changelog now lives in git commit history, and will
38 * not be updated further in-file.
837ca6dd 39 *
78f81cc4
BD		 40 * 2005-03-17 0.11 support for 600e, 770x
41 * thanks to Jamie Lentin <lentinj@dial.pipex.com>
4b45cc07
HMH		 42 *
43 * 2005-01-16 0.9 use MODULE_VERSION
78f81cc4
BD		 44 * thanks to Henrik Brix Andersen <brix@gentoo.org>
45 * fix parameter passing on module loading
46 * thanks to Rusty Russell <rusty@rustcorp.com.au>
47 * thanks to Jim Radford <radford@blackbean.org>
48 * 2004-11-08 0.8 fix init error case, don't return from a macro
49 * thanks to Chris Wright <chrisw@osdl.org>
1da177e4
LT		 50 */
51
0c78039f
HMH		 52#include <linux/kernel.h>
53#include <linux/module.h>
54#include <linux/init.h>
55#include <linux/types.h>
56#include <linux/string.h>
57#include <linux/list.h>
58#include <linux/mutex.h>
73a94d86 59#include <linux/sched.h>
0c78039f
HMH		 60#include <linux/kthread.h>
61#include <linux/freezer.h>
62#include <linux/delay.h>
5a0e3ad6 63#include <linux/slab.h>
0c78039f
HMH		 64#include <linux/nvram.h>
65#include <linux/proc_fs.h>
887965e6 66#include <linux/seq_file.h>
0c78039f
HMH		 67#include <linux/sysfs.h>
68#include <linux/backlight.h>
2801b968 69#include <linux/bitops.h>
0c78039f
HMH		 70#include <linux/fb.h>
71#include <linux/platform_device.h>
72#include <linux/hwmon.h>
73#include <linux/hwmon-sysfs.h>
74#include <linux/input.h>
4fa6811b 75#include <linux/leds.h>
0e74dc26 76#include <linux/rfkill.h>
0c78039f
HMH		 77#include <linux/dmi.h>
78#include <linux/jiffies.h>
79#include <linux/workqueue.h>
8b48463f
LZ		 80#include <linux/acpi.h>
81#include <linux/pci_ids.h>
2801b968 82#include <linux/power_supply.h>
8b48463f 83#include <linux/thinkpad_acpi.h>
0d204c34
HMH		 84#include <sound/core.h>
85#include <sound/control.h>
86#include <sound/initval.h>
7c0f6ba6 87#include <linux/uaccess.h>
2801b968 88#include <acpi/battery.h>
b33c6ce5 89#include <acpi/video.h>
0c78039f
HMH		 90
91/* ThinkPad CMOS commands */
92#define TP_CMOS_VOLUME_DOWN 0
93#define TP_CMOS_VOLUME_UP 1
94#define TP_CMOS_VOLUME_MUTE 2
95#define TP_CMOS_BRIGHTNESS_UP 4
96#define TP_CMOS_BRIGHTNESS_DOWN 5
4fa6811b
HMH		 97#define TP_CMOS_THINKLIGHT_ON 12
98#define TP_CMOS_THINKLIGHT_OFF 13
0c78039f
HMH		 99
100/* NVRAM Addresses */
101enum tp_nvram_addr {
102 TP_NVRAM_ADDR_HK2 = 0x57,
103 TP_NVRAM_ADDR_THINKLIGHT = 0x58,
104 TP_NVRAM_ADDR_VIDEO = 0x59,
105 TP_NVRAM_ADDR_BRIGHTNESS = 0x5e,
106 TP_NVRAM_ADDR_MIXER = 0x60,
107};
108
109/* NVRAM bit masks */
110enum {
111 TP_NVRAM_MASK_HKT_THINKPAD = 0x08,
112 TP_NVRAM_MASK_HKT_ZOOM = 0x20,
113 TP_NVRAM_MASK_HKT_DISPLAY = 0x40,
114 TP_NVRAM_MASK_HKT_HIBERNATE = 0x80,
115 TP_NVRAM_MASK_THINKLIGHT = 0x10,
116 TP_NVRAM_MASK_HKT_DISPEXPND = 0x30,
117 TP_NVRAM_MASK_HKT_BRIGHTNESS = 0x20,
118 TP_NVRAM_MASK_LEVEL_BRIGHTNESS = 0x0f,
119 TP_NVRAM_POS_LEVEL_BRIGHTNESS = 0,
120 TP_NVRAM_MASK_MUTE = 0x40,
121 TP_NVRAM_MASK_HKT_VOLUME = 0x80,
122 TP_NVRAM_MASK_LEVEL_VOLUME = 0x0f,
123 TP_NVRAM_POS_LEVEL_VOLUME = 0,
124};
125
5d756db9
HMH		 126/* Misc NVRAM-related */
127enum {
128 TP_NVRAM_LEVEL_VOLUME_MAX = 14,
129};
130
b21a15f6 131/* ACPI HIDs */
9fbdaeb4
MI		 132#define TPACPI_ACPI_IBM_HKEY_HID "IBM0068"
133#define TPACPI_ACPI_LENOVO_HKEY_HID "LEN0068"
a3c42a46 134#define TPACPI_ACPI_LENOVO_HKEY_V2_HID "LEN0268"
437e470c 135#define TPACPI_ACPI_EC_HID "PNP0C09"
b21a15f6
HMH		 136
137/* Input IDs */
138#define TPACPI_HKEY_INPUT_PRODUCT 0x5054 /* "TP" */
139#define TPACPI_HKEY_INPUT_VERSION 0x4101
140
153f8220
HMH		 141/* ACPI \WGSV commands */
142enum {
143 TP_ACPI_WGSV_GET_STATE = 0x01, /* Get state information */
144 TP_ACPI_WGSV_PWR_ON_ON_RESUME = 0x02, /* Resume WWAN powered on */
145 TP_ACPI_WGSV_PWR_OFF_ON_RESUME = 0x03, /* Resume WWAN powered off */
146 TP_ACPI_WGSV_SAVE_STATE = 0x04, /* Save state for S4/S5 */
147};
148
149/* TP_ACPI_WGSV_GET_STATE bits */
150enum {
151 TP_ACPI_WGSV_STATE_WWANEXIST = 0x0001, /* WWAN hw available */
152 TP_ACPI_WGSV_STATE_WWANPWR = 0x0002, /* WWAN radio enabled */
153 TP_ACPI_WGSV_STATE_WWANPWRRES = 0x0004, /* WWAN state at resume */
154 TP_ACPI_WGSV_STATE_WWANBIOSOFF = 0x0008, /* WWAN disabled in BIOS */
155 TP_ACPI_WGSV_STATE_BLTHEXIST = 0x0001, /* BLTH hw available */
156 TP_ACPI_WGSV_STATE_BLTHPWR = 0x0002, /* BLTH radio enabled */
157 TP_ACPI_WGSV_STATE_BLTHPWRRES = 0x0004, /* BLTH state at resume */
158 TP_ACPI_WGSV_STATE_BLTHBIOSOFF = 0x0008, /* BLTH disabled in BIOS */
159 TP_ACPI_WGSV_STATE_UWBEXIST = 0x0010, /* UWB hw available */
160 TP_ACPI_WGSV_STATE_UWBPWR = 0x0020, /* UWB radio enabled */
161};
b21a15f6 162
67bcae6e
HMH		 163/* HKEY events */
164enum tpacpi_hkey_event_t {
165 /* Hotkey-related */
166 TP_HKEY_EV_HOTKEY_BASE = 0x1001, /* first hotkey (FN+F1) */
167 TP_HKEY_EV_BRGHT_UP = 0x1010, /* Brightness up */
168 TP_HKEY_EV_BRGHT_DOWN = 0x1011, /* Brightness down */
c685e20d 169 TP_HKEY_EV_KBD_LIGHT = 0x1012, /* Thinklight/kbd backlight */
67bcae6e
HMH		 170 TP_HKEY_EV_VOL_UP = 0x1015, /* Volume up or unmute */
171 TP_HKEY_EV_VOL_DOWN = 0x1016, /* Volume down or unmute */
172 TP_HKEY_EV_VOL_MUTE = 0x1017, /* Mixer output mute */
173
174 /* Reasons for waking up from S3/S4 */
175 TP_HKEY_EV_WKUP_S3_UNDOCK = 0x2304, /* undock requested, S3 */
176 TP_HKEY_EV_WKUP_S4_UNDOCK = 0x2404, /* undock requested, S4 */
177 TP_HKEY_EV_WKUP_S3_BAYEJ = 0x2305, /* bay ejection req, S3 */
178 TP_HKEY_EV_WKUP_S4_BAYEJ = 0x2405, /* bay ejection req, S4 */
179 TP_HKEY_EV_WKUP_S3_BATLOW = 0x2313, /* battery empty, S3 */
180 TP_HKEY_EV_WKUP_S4_BATLOW = 0x2413, /* battery empty, S4 */
181
182 /* Auto-sleep after eject request */
183 TP_HKEY_EV_BAYEJ_ACK = 0x3003, /* bay ejection complete */
184 TP_HKEY_EV_UNDOCK_ACK = 0x4003, /* undock complete */
185
186 /* Misc bay events */
187 TP_HKEY_EV_OPTDRV_EJ = 0x3006, /* opt. drive tray ejected */
a50245af
HMH		 188 TP_HKEY_EV_HOTPLUG_DOCK = 0x4010, /* docked into hotplug dock
189 or port replicator */
190 TP_HKEY_EV_HOTPLUG_UNDOCK = 0x4011, /* undocked from hotplug
191 dock or port replicator */
67bcae6e
HMH		 192
193 /* User-interface events */
194 TP_HKEY_EV_LID_CLOSE = 0x5001, /* laptop lid closed */
195 TP_HKEY_EV_LID_OPEN = 0x5002, /* laptop lid opened */
196 TP_HKEY_EV_TABLET_TABLET = 0x5009, /* tablet swivel up */
197 TP_HKEY_EV_TABLET_NOTEBOOK = 0x500a, /* tablet swivel down */
b03f4d49
L		 198 TP_HKEY_EV_TABLET_CHANGED = 0x60c0, /* X1 Yoga (2016):
199 * enter/leave tablet mode
200 */
67bcae6e
HMH		 201 TP_HKEY_EV_PEN_INSERTED = 0x500b, /* tablet pen inserted */
202 TP_HKEY_EV_PEN_REMOVED = 0x500c, /* tablet pen removed */
203 TP_HKEY_EV_BRGHT_CHANGED = 0x5010, /* backlight control event */
204
2d43f671
HMH		 205 /* Key-related user-interface events */
206 TP_HKEY_EV_KEY_NUMLOCK = 0x6000, /* NumLock key pressed */
207 TP_HKEY_EV_KEY_FN = 0x6005, /* Fn key pressed? E420 */
67ab6248 208 TP_HKEY_EV_KEY_FN_ESC = 0x6060, /* Fn+Esc key pressed X240 */
2d43f671 209
67bcae6e
HMH		 210 /* Thermal events */
211 TP_HKEY_EV_ALARM_BAT_HOT = 0x6011, /* battery too hot */
212 TP_HKEY_EV_ALARM_BAT_XHOT = 0x6012, /* battery critically hot */
213 TP_HKEY_EV_ALARM_SENSOR_HOT = 0x6021, /* sensor too hot */
214 TP_HKEY_EV_ALARM_SENSOR_XHOT = 0x6022, /* sensor critically hot */
215 TP_HKEY_EV_THM_TABLE_CHANGED = 0x6030, /* thermal table changed */
216
6f62bc3e
RH		 217 /* AC-related events */
218 TP_HKEY_EV_AC_CHANGED = 0x6040, /* AC status changed */
2d43f671 219
587d8628
DH		 220 /* Further user-interface events */
221 TP_HKEY_EV_PALM_DETECTED = 0x60b0, /* palm hoveres keyboard */
222 TP_HKEY_EV_PALM_UNDETECTED = 0x60b1, /* palm removed */
223
67bcae6e
HMH		 224 /* Misc */
225 TP_HKEY_EV_RFKILL_CHANGED = 0x7000, /* rfkill switch changed */
226};
227
b21a15f6
HMH		 228/****************************************************************************
229 * Main driver
230 */
231
e0c7dfe7
HMH		 232#define TPACPI_NAME "thinkpad"
233#define TPACPI_DESC "ThinkPad ACPI Extras"
234#define TPACPI_FILE TPACPI_NAME "_acpi"
235#define TPACPI_URL "http://ibm-acpi.sf.net/"
236#define TPACPI_MAIL "ibm-acpi-devel@lists.sourceforge.net"
b21a15f6 237
e0c7dfe7
HMH		 238#define TPACPI_PROC_DIR "ibm"
239#define TPACPI_ACPI_EVENT_PREFIX "ibm"
240#define TPACPI_DRVR_NAME TPACPI_FILE
95e57ab2 241#define TPACPI_DRVR_SHORTNAME "tpacpi"
e0c7dfe7 242#define TPACPI_HWMON_DRVR_NAME TPACPI_NAME "_hwmon"
b21a15f6 243
95e57ab2 244#define TPACPI_NVRAM_KTHREAD_NAME "ktpacpi_nvramd"
e0e3c061 245#define TPACPI_WORKQUEUE_NAME "ktpacpid"
95e57ab2 246
e0c7dfe7 247#define TPACPI_MAX_ACPI_ARGS 3
b21a15f6 248
7ff8d62f 249/* Debugging printk groups */
0c78039f 250#define TPACPI_DBG_ALL 0xffff
73a94d86 251#define TPACPI_DBG_DISCLOSETASK 0x8000
0c78039f
HMH		 252#define TPACPI_DBG_INIT 0x0001
253#define TPACPI_DBG_EXIT 0x0002
bee4cd9b 254#define TPACPI_DBG_RFKILL 0x0004
56e2c200 255#define TPACPI_DBG_HKEY 0x0008
74a60c0f 256#define TPACPI_DBG_FAN 0x0010
0e501834 257#define TPACPI_DBG_BRGHT 0x0020
329e4e18 258#define TPACPI_DBG_MIXER 0x0040
0c78039f 259
35ff8b9f
HMH		 260#define onoff(status, bit) ((status) & (1 << (bit)) ? "on" : "off")
261#define enabled(status, bit) ((status) & (1 << (bit)) ? "enabled" : "disabled")
262#define strlencmp(a, b) (strncmp((a), (b), strlen(b)))
0c78039f 263
0c78039f
HMH		 264
265/****************************************************************************
b21a15f6 266 * Driver-wide structs and misc. variables
0c78039f
HMH		 267 */
268
269struct ibm_struct;
270
271struct tp_acpi_drv_struct {
272 const struct acpi_device_id *hid;
273 struct acpi_driver *driver;
274
275 void (*notify) (struct ibm_struct *, u32);
276 acpi_handle *handle;
277 u32 type;
278 struct acpi_device *device;
279};
280
281struct ibm_struct {
282 char *name;
283
887965e6 284 int (*read) (struct seq_file *);
0c78039f
HMH		 285 int (*write) (char *);
286 void (*exit) (void);
287 void (*resume) (void);
fd3c3a42 288 void (*suspend) (void);
90d9d3c7 289 void (*shutdown) (void);
0c78039f
HMH		 290
291 struct list_head all_drivers;
292
293 struct tp_acpi_drv_struct *acpi;
294
295 struct {
296 u8 acpi_driver_registered:1;
297 u8 acpi_notify_installed:1;
298 u8 proc_created:1;
299 u8 init_called:1;
300 u8 experimental:1;
301 } flags;
302};
303
304struct ibm_init_struct {
305 char param[32];
306
307 int (*init) (struct ibm_init_struct *);
d161a13f 308 umode_t base_procfs_mode;
0c78039f
HMH		 309 struct ibm_struct *data;
310};
311
312static struct {
0c78039f
HMH		 313 u32 bluetooth:1;
314 u32 hotkey:1;
315 u32 hotkey_mask:1;
316 u32 hotkey_wlsw:1;
b3180028
L		 317 enum {
318 TP_HOTKEY_TABLET_NONE = 0,
319 TP_HOTKEY_TABLET_USES_MHKG,
dda3ec0a 320 TP_HOTKEY_TABLET_USES_GMMS,
b3180028 321 } hotkey_tablet;
bb28f3d5 322 u32 kbdlight:1;
0c78039f
HMH		 323 u32 light:1;
324 u32 light_status:1;
b5972796 325 u32 bright_acpimode:1;
77775838 326 u32 bright_unkfw:1;
0c78039f 327 u32 wan:1;
0045c0aa 328 u32 uwb:1;
0c78039f 329 u32 fan_ctrl_status_undef:1;
d7377247 330 u32 second_fan:1;
60201732 331 u32 beep_needs_two_args:1;
a112ceee 332 u32 mixer_no_level_control:1;
0c78039f
HMH		 333 u32 input_device_registered:1;
334 u32 platform_drv_registered:1;
335 u32 platform_drv_attrs_registered:1;
336 u32 sensors_pdrv_registered:1;
337 u32 sensors_pdrv_attrs_registered:1;
338 u32 sensors_pdev_attrs_registered:1;
339 u32 hotkey_poll_active:1;
f23a5bcb 340 u32 has_adaptive_kbd:1;
2801b968 341 u32 battery:1;
0c78039f
HMH		 342} tp_features;
343
92889022
HMH		 344static struct {
345 u16 hotkey_mask_ff:1;
c7ac6291 346 u16 volume_ctrl_forbidden:1;
92889022
HMH		 347} tp_warned;
348
0c78039f
HMH		 349struct thinkpad_id_data {
350 unsigned int vendor; /* ThinkPad vendor:
351 * PCI_VENDOR_ID_IBM/PCI_VENDOR_ID_LENOVO */
352
353 char *bios_version_str; /* Something like 1ZET51WW (1.03z) */
354 char *ec_version_str; /* Something like 1ZHT51WW-1.04a */
355
050df107 356 u16 bios_model; /* 1Y = 0x5931, 0 = unknown */
0c78039f 357 u16 ec_model;
050df107
HMH		 358 u16 bios_release; /* 1ZETK1WW = 0x314b, 0 = unknown */
359 u16 ec_release;
0c78039f 360
8c74adbc
HMH		 361 char *model_str; /* ThinkPad T43 */
362 char *nummodel_str; /* 9384A9C for a 9384-A9C model */
0c78039f 363};
0c78039f
HMH		 364static struct thinkpad_id_data thinkpad_id;
365
8fef502e
HMH		 366static enum {
367 TPACPI_LIFE_INIT = 0,
368 TPACPI_LIFE_RUNNING,
369 TPACPI_LIFE_EXITING,
370} tpacpi_lifecycle;
371
b21a15f6
HMH		 372static int experimental;
373static u32 dbg_level;
374
e0e3c061
HMH		 375static struct workqueue_struct *tpacpi_wq;
376
75bd3bf2
HMH		 377enum led_status_t {
378 TPACPI_LED_OFF = 0,
379 TPACPI_LED_ON,
380 TPACPI_LED_BLINK,
381};
382
86ec0c2c 383/* tpacpi LED class */
4fa6811b
HMH		 384struct tpacpi_led_classdev {
385 struct led_classdev led_classdev;
edf2d778 386 int led;
4fa6811b
HMH		 387};
388
77775838
HMH		 389/* brightness level capabilities */
390static unsigned int bright_maxlvl; /* 0 = unknown */
391
a73f3091
HMH		 392#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
393static int dbg_wlswemul;
90ab5ee9 394static bool tpacpi_wlsw_emulstate;
a73f3091 395static int dbg_bluetoothemul;
90ab5ee9 396static bool tpacpi_bluetooth_emulstate;
a73f3091 397static int dbg_wwanemul;
90ab5ee9 398static bool tpacpi_wwan_emulstate;
0045c0aa 399static int dbg_uwbemul;
90ab5ee9 400static bool tpacpi_uwb_emulstate;
a73f3091
HMH		 401#endif
402
403
3dcc2c3b
HMH		 404/*************************************************************************
405 * Debugging helpers
406 */
407
0978e012
JP		 408#define dbg_printk(a_dbg_level, format, arg...) \
409do { \
410 if (dbg_level & (a_dbg_level)) \
411 printk(KERN_DEBUG pr_fmt("%s: " format), \
412 __func__, ##arg); \
413} while (0)
3dcc2c3b
HMH		 414
415#ifdef CONFIG_THINKPAD_ACPI_DEBUG
416#define vdbg_printk dbg_printk
417static const char *str_supported(int is_supported);
418#else
0978e012
JP		 419static inline const char *str_supported(int is_supported) { return ""; }
420#define vdbg_printk(a_dbg_level, format, arg...) \
efd85cf8 421 do { if (0) no_printk(format, ##arg); } while (0)
3dcc2c3b
HMH		 422#endif
423
73a94d86
HMH		 424static void tpacpi_log_usertask(const char * const what)
425{
0978e012
JP		 426 printk(KERN_DEBUG pr_fmt("%s: access by process with PID %d\n"),
427 what, task_tgid_vnr(current));
73a94d86
HMH		 428}
429
0978e012
JP		 430#define tpacpi_disclose_usertask(what, format, arg...) \
431do { \
432 if (unlikely((dbg_level & TPACPI_DBG_DISCLOSETASK) && \
433 (tpacpi_lifecycle == TPACPI_LIFE_RUNNING))) { \
434 printk(KERN_DEBUG pr_fmt("%s: PID %d: " format), \
435 what, task_tgid_vnr(current), ## arg); \
436 } \
437} while (0)
3dcc2c3b 438
7d95a3d5
HMH		 439/*
440 * Quirk handling helpers
441 *
442 * ThinkPad IDs and versions seen in the field so far
443 * are two-characters from the set [0-9A-Z], i.e. base 36.
444 *
445 * We use values well outside that range as specials.
446 */
447
448#define TPACPI_MATCH_ANY 0xffffU
449#define TPACPI_MATCH_UNKNOWN 0U
450
451/* TPID('1', 'Y') == 0x5931 */
452#define TPID(__c1, __c2) (((__c2) << 8) | (__c1))
453
454#define TPACPI_Q_IBM(__id1, __id2, __quirk) \
455 { .vendor = PCI_VENDOR_ID_IBM, \
456 .bios = TPID(__id1, __id2), \
457 .ec = TPACPI_MATCH_ANY, \
458 .quirks = (__quirk) }
459
460#define TPACPI_Q_LNV(__id1, __id2, __quirk) \
461 { .vendor = PCI_VENDOR_ID_LENOVO, \
462 .bios = TPID(__id1, __id2), \
463 .ec = TPACPI_MATCH_ANY, \
464 .quirks = (__quirk) }
465
a112ceee
HMH		 466#define TPACPI_QEC_LNV(__id1, __id2, __quirk) \
467 { .vendor = PCI_VENDOR_ID_LENOVO, \
468 .bios = TPACPI_MATCH_ANY, \
469 .ec = TPID(__id1, __id2), \
470 .quirks = (__quirk) }
471
7d95a3d5
HMH		 472struct tpacpi_quirk {
473 unsigned int vendor;
474 u16 bios;
475 u16 ec;
476 unsigned long quirks;
477};
478
479/**
480 * tpacpi_check_quirks() - search BIOS/EC version on a list
481 * @qlist: array of &struct tpacpi_quirk
482 * @qlist_size: number of elements in @qlist
483 *
484 * Iterates over a quirks list until one is found that matches the
485 * ThinkPad's vendor, BIOS and EC model.
486 *
487 * Returns 0 if nothing matches, otherwise returns the quirks field of
488 * the matching &struct tpacpi_quirk entry.
489 *
490 * The match criteria is: vendor, ec and bios much match.
491 */
492static unsigned long __init tpacpi_check_quirks(
493 const struct tpacpi_quirk *qlist,
494 unsigned int qlist_size)
495{
496 while (qlist_size) {
497 if ((qlist->vendor == thinkpad_id.vendor ||
498 qlist->vendor == TPACPI_MATCH_ANY) &&
499 (qlist->bios == thinkpad_id.bios_model ||
500 qlist->bios == TPACPI_MATCH_ANY) &&
501 (qlist->ec == thinkpad_id.ec_model ||
502 qlist->ec == TPACPI_MATCH_ANY))
503 return qlist->quirks;
504
505 qlist_size--;
506 qlist++;
507 }
508 return 0;
509}
510
e28393c0
HMH		 511static inline bool __pure __init tpacpi_is_lenovo(void)
512{
513 return thinkpad_id.vendor == PCI_VENDOR_ID_LENOVO;
514}
515
516static inline bool __pure __init tpacpi_is_ibm(void)
517{
518 return thinkpad_id.vendor == PCI_VENDOR_ID_IBM;
519}
7d95a3d5 520
56b6aeb0
HMH		 521/****************************************************************************
522 ****************************************************************************
523 *
524 * ACPI Helpers and device model
525 *
526 ****************************************************************************
527 ****************************************************************************/
528
529/*************************************************************************
530 * ACPI basic handles
531 */
1da177e4 532
94954cc6 533static acpi_handle root_handle;
437e470c 534static acpi_handle ec_handle;
1da177e4 535
e0c7dfe7 536#define TPACPI_HANDLE(object, parent, paths...) \
1da177e4 537 static acpi_handle object##_handle; \
3bd01896 538 static const acpi_handle * const object##_parent __initconst = \
ef07a5ab
HMH		 539 &parent##_handle; \
540 static char *object##_paths[] __initdata = { paths }
1da177e4 541
e0c7dfe7
HMH		 542TPACPI_HANDLE(ecrd, ec, "ECRD"); /* 570 */
543TPACPI_HANDLE(ecwr, ec, "ECWR"); /* 570 */
78f81cc4 544
35ff8b9f
HMH		 545TPACPI_HANDLE(cmos, root, "\\UCMS", /* R50, R50e, R50p, R51, */
546 /* T4x, X31, X40 */
78f81cc4
BD		 547 "\\CMOS", /* A3x, G4x, R32, T23, T30, X22-24, X30 */
548 "\\CMS", /* R40, R40e */
56b6aeb0 549 ); /* all others */
78f81cc4 550
e0c7dfe7 551TPACPI_HANDLE(hkey, ec, "\\_SB.HKEY", /* 600e/x, 770e, 770x */
78f81cc4
BD		 552 "^HKEY", /* R30, R31 */
553 "HKEY", /* all others */
56b6aeb0 554 ); /* 570 */
78f81cc4 555
56b6aeb0
HMH		 556/*************************************************************************
557 * ACPI helpers
a8b7a662
HMH		 558 */
559
1da177e4 560static int acpi_evalf(acpi_handle handle,
eceeb437 561 int *res, char *method, char *fmt, ...)
1da177e4
LT		 562{
563 char *fmt0 = fmt;
78f81cc4 564 struct acpi_object_list params;
e0c7dfe7 565 union acpi_object in_objs[TPACPI_MAX_ACPI_ARGS];
78f81cc4
BD		 566 struct acpi_buffer result, *resultp;
567 union acpi_object out_obj;
568 acpi_status status;
569 va_list ap;
570 char res_type;
571 int success;
572 int quiet;
1da177e4
LT		 573
574 if (!*fmt) {
0978e012 575 pr_err("acpi_evalf() called with empty format\n");
1da177e4
LT		 576 return 0;
577 }
578
579 if (*fmt == 'q') {
580 quiet = 1;
581 fmt++;
582 } else
583 quiet = 0;
584
585 res_type = *(fmt++);
586
587 params.count = 0;
588 params.pointer = &in_objs[0];
589
590 va_start(ap, fmt);
591 while (*fmt) {
592 char c = *(fmt++);
593 switch (c) {
594 case 'd': /* int */
595 in_objs[params.count].integer.value = va_arg(ap, int);
596 in_objs[params.count++].type = ACPI_TYPE_INTEGER;
597 break;
78f81cc4 598 /* add more types as needed */
1da177e4 599 default:
5cac62ac
AS		 600 pr_err("acpi_evalf() called with invalid format character '%c'\n",
601 c);
21365851 602 va_end(ap);
1da177e4
LT		 603 return 0;
604 }
605 }
606 va_end(ap);
607
78f81cc4
BD		 608 if (res_type != 'v') {
609 result.length = sizeof(out_obj);
610 result.pointer = &out_obj;
611 resultp = &result;
612 } else
613 resultp = NULL;
1da177e4 614
78f81cc4 615 status = acpi_evaluate_object(handle, method, &params, resultp);
1da177e4
LT		 616
617 switch (res_type) {
78f81cc4 618 case 'd': /* int */
263f4a30
HMH		 619 success = (status == AE_OK &&
620 out_obj.type == ACPI_TYPE_INTEGER);
621 if (success && res)
eceeb437 622 *res = out_obj.integer.value;
1da177e4 623 break;
78f81cc4 624 case 'v': /* void */
1da177e4
LT		 625 success = status == AE_OK;
626 break;
78f81cc4 627 /* add more types as needed */
1da177e4 628 default:
5cac62ac
AS		 629 pr_err("acpi_evalf() called with invalid format character '%c'\n",
630 res_type);
1da177e4
LT		 631 return 0;
632 }
633
56b6aeb0 634 if (!success && !quiet)
0978e012 635 pr_err("acpi_evalf(%s, %s, ...) failed: %s\n",
263f4a30 636 method, fmt0, acpi_format_exception(status));
56b6aeb0
HMH		 637
638 return success;
639}
640
35ff8b9f 641static int acpi_ec_read(int i, u8 *p)
56b6aeb0
HMH		 642{
643 int v;
644
645 if (ecrd_handle) {
646 if (!acpi_evalf(ecrd_handle, &v, NULL, "dd", i))
647 return 0;
648 *p = v;
649 } else {
650 if (ec_read(i, p) < 0)
651 return 0;
652 }
653
654 return 1;
655}
656
657static int acpi_ec_write(int i, u8 v)
658{
659 if (ecwr_handle) {
660 if (!acpi_evalf(ecwr_handle, NULL, NULL, "vdd", i, v))
661 return 0;
662 } else {
663 if (ec_write(i, v) < 0)
664 return 0;
665 }
666
667 return 1;
668}
669
c9bea99c
HMH		 670static int issue_thinkpad_cmos_command(int cmos_cmd)
671{
672 if (!cmos_handle)
673 return -ENXIO;
674
675 if (!acpi_evalf(cmos_handle, NULL, NULL, "vd", cmos_cmd))
676 return -EIO;
677
678 return 0;
679}
680
56b6aeb0
HMH		 681/*************************************************************************
682 * ACPI device model
683 */
684
35ff8b9f
HMH		 685#define TPACPI_ACPIHANDLE_INIT(object) \
686 drv_acpi_handle_init(#object, &object##_handle, *object##_parent, \
ef07a5ab 687 object##_paths, ARRAY_SIZE(object##_paths))
f74a27d4 688
ef07a5ab
HMH		 689static void __init drv_acpi_handle_init(const char *name,
690 acpi_handle *handle, const acpi_handle parent,
691 char **paths, const int num_paths)
56b6aeb0
HMH		 692{
693 int i;
694 acpi_status status;
695
5ae930e6
HMH		 696 vdbg_printk(TPACPI_DBG_INIT, "trying to locate ACPI handle for %s\n",
697 name);
698
56b6aeb0
HMH		 699 for (i = 0; i < num_paths; i++) {
700 status = acpi_get_handle(parent, paths[i], handle);
701 if (ACPI_SUCCESS(status)) {
5ae930e6
HMH		 702 dbg_printk(TPACPI_DBG_INIT,
703 "Found ACPI handle %s for %s\n",
ef07a5ab 704 paths[i], name);
56b6aeb0
HMH		 705 return;
706 }
707 }
708
5ae930e6
HMH		 709 vdbg_printk(TPACPI_DBG_INIT, "ACPI handle for %s not found\n",
710 name);
56b6aeb0
HMH		 711 *handle = NULL;
712}
713
437e470c
HMH		 714static acpi_status __init tpacpi_acpi_handle_locate_callback(acpi_handle handle,
715 u32 level, void *context, void **return_value)
716{
46445b6b
AL		 717 struct acpi_device *dev;
718 if (!strcmp(context, "video")) {
719 if (acpi_bus_get_device(handle, &dev))
720 return AE_OK;
721 if (strcmp(ACPI_VIDEO_HID, acpi_device_hid(dev)))
722 return AE_OK;
723 }
724
437e470c
HMH		 725 *(acpi_handle *)return_value = handle;
726
727 return AE_CTRL_TERMINATE;
728}
729
730static void __init tpacpi_acpi_handle_locate(const char *name,
731 const char *hid,
732 acpi_handle *handle)
733{
734 acpi_status status;
735 acpi_handle device_found;
736
46445b6b 737 BUG_ON(!name || !handle);
437e470c
HMH		 738 vdbg_printk(TPACPI_DBG_INIT,
739 "trying to locate ACPI handle for %s, using HID %s\n",
46445b6b 740 name, hid ? hid : "NULL");
437e470c
HMH		 741
742 memset(&device_found, 0, sizeof(device_found));
743 status = acpi_get_devices(hid, tpacpi_acpi_handle_locate_callback,
744 (void *)name, &device_found);
745
746 *handle = NULL;
747
748 if (ACPI_SUCCESS(status)) {
749 *handle = device_found;
750 dbg_printk(TPACPI_DBG_INIT,
751 "Found ACPI handle for %s\n", name);
752 } else {
753 vdbg_printk(TPACPI_DBG_INIT,
754 "Could not locate an ACPI handle for %s: %s\n",
755 name, acpi_format_exception(status));
756 }
757}
758
8d376cd6 759static void dispatch_acpi_notify(acpi_handle handle, u32 event, void *data)
56b6aeb0
HMH		 760{
761 struct ibm_struct *ibm = data;
762
8fef502e
HMH		 763 if (tpacpi_lifecycle != TPACPI_LIFE_RUNNING)
764 return;
765
8d376cd6 766 if (!ibm || !ibm->acpi || !ibm->acpi->notify)
56b6aeb0
HMH		 767 return;
768
8d376cd6 769 ibm->acpi->notify(ibm, event);
56b6aeb0
HMH		 770}
771
8d376cd6 772static int __init setup_acpi_notify(struct ibm_struct *ibm)
56b6aeb0
HMH		 773{
774 acpi_status status;
5ae930e6 775 int rc;
56b6aeb0 776
8d376cd6
HMH		 777 BUG_ON(!ibm->acpi);
778
779 if (!*ibm->acpi->handle)
56b6aeb0
HMH		 780 return 0;
781
5ae930e6 782 vdbg_printk(TPACPI_DBG_INIT,
fe08bc4b
HMH		 783 "setting up ACPI notify for %s\n", ibm->name);
784
5ae930e6
HMH		 785 rc = acpi_bus_get_device(*ibm->acpi->handle, &ibm->acpi->device);
786 if (rc < 0) {
0978e012 787 pr_err("acpi_bus_get_device(%s) failed: %d\n", ibm->name, rc);
56b6aeb0
HMH		 788 return -ENODEV;
789 }
790
db89b4f0 791 ibm->acpi->device->driver_data = ibm;
8d376cd6 792 sprintf(acpi_device_class(ibm->acpi->device), "%s/%s",
e0c7dfe7 793 TPACPI_ACPI_EVENT_PREFIX,
643f12db 794 ibm->name);
56b6aeb0 795
8d376cd6
HMH		 796 status = acpi_install_notify_handler(*ibm->acpi->handle,
797 ibm->acpi->type, dispatch_acpi_notify, ibm);
56b6aeb0
HMH		 798 if (ACPI_FAILURE(status)) {
799 if (status == AE_ALREADY_EXISTS) {
5cac62ac
AS		 800 pr_notice("another device driver is already handling %s events\n",
801 ibm->name);
56b6aeb0 802 } else {
0978e012 803 pr_err("acpi_install_notify_handler(%s) failed: %s\n",
72f19921 804 ibm->name, acpi_format_exception(status));
56b6aeb0
HMH		 805 }
806 return -ENODEV;
807 }
8d376cd6 808 ibm->flags.acpi_notify_installed = 1;
56b6aeb0
HMH		 809 return 0;
810}
811
8d376cd6 812static int __init tpacpi_device_add(struct acpi_device *device)
56b6aeb0
HMH		 813{
814 return 0;
815}
816
6700121b 817static int __init register_tpacpi_subdriver(struct ibm_struct *ibm)
56b6aeb0 818{
5ae930e6 819 int rc;
56b6aeb0 820
fe08bc4b
HMH		 821 dbg_printk(TPACPI_DBG_INIT,
822 "registering %s as an ACPI driver\n", ibm->name);
823
8d376cd6
HMH		 824 BUG_ON(!ibm->acpi);
825
826 ibm->acpi->driver = kzalloc(sizeof(struct acpi_driver), GFP_KERNEL);
827 if (!ibm->acpi->driver) {
0978e012 828 pr_err("failed to allocate memory for ibm->acpi->driver\n");
5fba344c 829 return -ENOMEM;
56b6aeb0
HMH		 830 }
831
e0c7dfe7 832 sprintf(ibm->acpi->driver->name, "%s_%s", TPACPI_NAME, ibm->name);
8d376cd6 833 ibm->acpi->driver->ids = ibm->acpi->hid;
1ba90e3a 834
8d376cd6 835 ibm->acpi->driver->ops.add = &tpacpi_device_add;
56b6aeb0 836
5ae930e6
HMH		 837 rc = acpi_bus_register_driver(ibm->acpi->driver);
838 if (rc < 0) {
0978e012 839 pr_err("acpi_bus_register_driver(%s) failed: %d\n",
1ba90e3a 840 ibm->name, rc);
8d376cd6
HMH		 841 kfree(ibm->acpi->driver);
842 ibm->acpi->driver = NULL;
5ae930e6 843 } else if (!rc)
8d376cd6 844 ibm->flags.acpi_driver_registered = 1;
56b6aeb0 845
5ae930e6 846 return rc;
56b6aeb0
HMH		 847}
848
849
850/****************************************************************************
851 ****************************************************************************
852 *
853 * Procfs Helpers
854 *
855 ****************************************************************************
856 ****************************************************************************/
857
887965e6 858static int dispatch_proc_show(struct seq_file *m, void *v)
56b6aeb0 859{
887965e6 860 struct ibm_struct *ibm = m->private;
56b6aeb0
HMH		 861
862 if (!ibm || !ibm->read)
863 return -EINVAL;
887965e6
AD		 864 return ibm->read(m);
865}
56b6aeb0 866
887965e6
AD		 867static int dispatch_proc_open(struct inode *inode, struct file *file)
868{
d9dda78b 869 return single_open(file, dispatch_proc_show, PDE_DATA(inode));
56b6aeb0
HMH		 870}
871
887965e6 872static ssize_t dispatch_proc_write(struct file *file,
35ff8b9f 873 const char __user *userbuf,
887965e6 874 size_t count, loff_t *pos)
56b6aeb0 875{
d9dda78b 876 struct ibm_struct *ibm = PDE_DATA(file_inode(file));
56b6aeb0
HMH		 877 char *kernbuf;
878 int ret;
879
880 if (!ibm || !ibm->write)
881 return -EINVAL;
5b05d469
MB		 882 if (count > PAGE_SIZE - 2)
883 return -EINVAL;
56b6aeb0
HMH		 884
885 kernbuf = kmalloc(count + 2, GFP_KERNEL);
886 if (!kernbuf)
887 return -ENOMEM;
1da177e4 888
56b6aeb0
HMH		 889 if (copy_from_user(kernbuf, userbuf, count)) {
890 kfree(kernbuf);
891 return -EFAULT;
892 }
1da177e4 893
56b6aeb0
HMH		 894 kernbuf[count] = 0;
895 strcat(kernbuf, ",");
896 ret = ibm->write(kernbuf);
897 if (ret == 0)
898 ret = count;
1da177e4 899
56b6aeb0
HMH		 900 kfree(kernbuf);
901
902 return ret;
1da177e4
LT		 903}
904
887965e6
AD		 905static const struct file_operations dispatch_proc_fops = {
906 .owner = THIS_MODULE,
907 .open = dispatch_proc_open,
908 .read = seq_read,
909 .llseek = seq_lseek,
910 .release = single_release,
911 .write = dispatch_proc_write,
912};
913
1da177e4
LT		 914static char *next_cmd(char **cmds)
915{
916 char *start = *cmds;
917 char *end;
918
919 while ((end = strchr(start, ',')) && end == start)
920 start = end + 1;
921
922 if (!end)
923 return NULL;
924
925 *end = 0;
926 *cmds = end + 1;
927 return start;
928}
929
56b6aeb0 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
54ae1501
HMH		 991static struct platform_driver tpacpi_pdriver = {
992 .driver = {
e0c7dfe7 993 .name = TPACPI_DRVR_NAME,
4959a781 994 .pm = &tpacpi_pm,
54ae1501 995 },
90d9d3c7 996 .shutdown = tpacpi_shutdown_handler,
54ae1501
HMH		 997};
998
7fd40029
HMH		 999static struct platform_driver tpacpi_hwmon_pdriver = {
1000 .driver = {
e0c7dfe7 1001 .name = TPACPI_HWMON_DRVR_NAME,
7fd40029
HMH		 1002 },
1003};
54ae1501 1004
176750d6 1005/*************************************************************************
b21a15f6 1006 * sysfs support helpers
176750d6
HMH		 1007 */
1008
b21a15f6
HMH		 1009struct attribute_set {
1010 unsigned int members, max_members;
1011 struct attribute_group group;
176750d6
HMH		 1012};
1013
7252374a
HMH		 1014struct attribute_set_obj {
1015 struct attribute_set s;
1016 struct attribute *a;
1017} __attribute__((packed));
1018
1019static struct attribute_set *create_attr_set(unsigned int max_members,
35ff8b9f 1020 const char *name)
7252374a
HMH		 1021{
1022 struct attribute_set_obj *sobj;
1023
1024 if (max_members == 0)
1025 return NULL;
1026
1027 /* Allocates space for implicit NULL at the end too */
1028 sobj = kzalloc(sizeof(struct attribute_set_obj) +
1029 max_members * sizeof(struct attribute *),
1030 GFP_KERNEL);
1031 if (!sobj)
1032 return NULL;
1033 sobj->s.max_members = max_members;
1034 sobj->s.group.attrs = &sobj->a;
1035 sobj->s.group.name = name;
1036
1037 return &sobj->s;
1038}
1039
f74a27d4
HMH		 1040#define destroy_attr_set(_set) \
1041 kfree(_set);
1042
7252374a 1043/* not multi-threaded safe, use it in a single thread per set */
35ff8b9f 1044static int add_to_attr_set(struct attribute_set *s, struct attribute *attr)
7252374a
HMH		 1045{
1046 if (!s || !attr)
1047 return -EINVAL;
1048
1049 if (s->members >= s->max_members)
1050 return -ENOMEM;
1051
1052 s->group.attrs[s->members] = attr;
1053 s->members++;
1054
1055 return 0;
1056}
1057
35ff8b9f 1058static int add_many_to_attr_set(struct attribute_set *s,
7252374a
HMH		 1059 struct attribute **attr,
1060 unsigned int count)
1061{
1062 int i, res;
1063
1064 for (i = 0; i < count; i++) {
1065 res = add_to_attr_set(s, attr[i]);
1066 if (res)
1067 return res;
1068 }
1069
1070 return 0;
1071}
1072
35ff8b9f 1073static void delete_attr_set(struct attribute_set *s, struct kobject *kobj)
7252374a
HMH		 1074{
1075 sysfs_remove_group(kobj, &s->group);
1076 destroy_attr_set(s);
1077}
1078
f74a27d4
HMH		 1079#define register_attr_set_with_sysfs(_attr_set, _kobj) \
1080 sysfs_create_group(_kobj, &_attr_set->group)
1081
7252374a
HMH		 1082static int parse_strtoul(const char *buf,
1083 unsigned long max, unsigned long *value)
1084{
1085 char *endp;
1086
e7d2860b
AGR		 1087 *value = simple_strtoul(skip_spaces(buf), &endp, 0);
1088 endp = skip_spaces(endp);
7252374a
HMH		 1089 if (*endp || *value > max)
1090 return -EINVAL;
1091
1092 return 0;
1093}
1094
d64c81c4
HMH		 1095static void tpacpi_disable_brightness_delay(void)
1096{
1097 if (acpi_evalf(hkey_handle, NULL, "PWMS", "qvd", 0))
0978e012 1098 pr_notice("ACPI backlight control delay disabled\n");
d64c81c4
HMH		 1099}
1100
19d337df
JB		 1101static void printk_deprecated_attribute(const char * const what,
1102 const char * const details)
1103{
1104 tpacpi_log_usertask("deprecated sysfs attribute");
5cac62ac 1105 pr_warn("WARNING: sysfs attribute %s is deprecated and will be removed. %s\n",
19d337df
JB		 1106 what, details);
1107}
1108
1109/*************************************************************************
1110 * rfkill and radio control support helpers
1111 */
1112
1113/*
1114 * ThinkPad-ACPI firmware handling model:
1115 *
1116 * WLSW (master wireless switch) is event-driven, and is common to all
1117 * firmware-controlled radios. It cannot be controlled, just monitored,
1118 * as expected. It overrides all radio state in firmware
1119 *
1120 * The kernel, a masked-off hotkey, and WLSW can change the radio state
1121 * (TODO: verify how WLSW interacts with the returned radio state).
1122 *
1123 * The only time there are shadow radio state changes, is when
1124 * masked-off hotkeys are used.
1125 */
1126
1127/*
1128 * Internal driver API for radio state:
1129 *
1130 * int: < 0 = error, otherwise enum tpacpi_rfkill_state
1131 * bool: true means radio blocked (off)
1132 */
1133enum tpacpi_rfkill_state {
1134 TPACPI_RFK_RADIO_OFF = 0,
1135 TPACPI_RFK_RADIO_ON
1136};
1137
1138/* rfkill switches */
1139enum tpacpi_rfk_id {
1140 TPACPI_RFK_BLUETOOTH_SW_ID = 0,
1141 TPACPI_RFK_WWAN_SW_ID,
1142 TPACPI_RFK_UWB_SW_ID,
1143 TPACPI_RFK_SW_MAX
1144};
1145
1146static const char *tpacpi_rfkill_names[] = {
1147 [TPACPI_RFK_BLUETOOTH_SW_ID] = "bluetooth",
1148 [TPACPI_RFK_WWAN_SW_ID] = "wwan",
1149 [TPACPI_RFK_UWB_SW_ID] = "uwb",
1150 [TPACPI_RFK_SW_MAX] = NULL
1151};
1152
1153/* ThinkPad-ACPI rfkill subdriver */
1154struct tpacpi_rfk {
1155 struct rfkill *rfkill;
1156 enum tpacpi_rfk_id id;
1157 const struct tpacpi_rfk_ops *ops;
1158};
1159
1160struct tpacpi_rfk_ops {
1161 /* firmware interface */
1162 int (*get_status)(void);
1163 int (*set_status)(const enum tpacpi_rfkill_state);
1164};
1165
1166static struct tpacpi_rfk *tpacpi_rfkill_switches[TPACPI_RFK_SW_MAX];
1167
1168/* Query FW and update rfkill sw state for a given rfkill switch */
1169static int tpacpi_rfk_update_swstate(const struct tpacpi_rfk *tp_rfk)
1170{
1171 int status;
1172
1173 if (!tp_rfk)
1174 return -ENODEV;
1175
1176 status = (tp_rfk->ops->get_status)();
1177 if (status < 0)
1178 return status;
1179
1180 rfkill_set_sw_state(tp_rfk->rfkill,
1181 (status == TPACPI_RFK_RADIO_OFF));
1182
1183 return status;
1184}
1185
1186/* Query FW and update rfkill sw state for all rfkill switches */
1187static void tpacpi_rfk_update_swstate_all(void)
1188{
1189 unsigned int i;
1190
1191 for (i = 0; i < TPACPI_RFK_SW_MAX; i++)
1192 tpacpi_rfk_update_swstate(tpacpi_rfkill_switches[i]);
1193}
1194
1195/*
1196 * Sync the HW-blocking state of all rfkill switches,
1197 * do notice it causes the rfkill core to schedule uevents
1198 */
1199static void tpacpi_rfk_update_hwblock_state(bool blocked)
1200{
1201 unsigned int i;
1202 struct tpacpi_rfk *tp_rfk;
1203
1204 for (i = 0; i < TPACPI_RFK_SW_MAX; i++) {
1205 tp_rfk = tpacpi_rfkill_switches[i];
1206 if (tp_rfk) {
1207 if (rfkill_set_hw_state(tp_rfk->rfkill,
1208 blocked)) {
1209 /* ignore -- we track sw block */
1210 }
1211 }
1212 }
1213}
1214
1215/* Call to get the WLSW state from the firmware */
1216static int hotkey_get_wlsw(void);
1217
1218/* Call to query WLSW state and update all rfkill switches */
1219static bool tpacpi_rfk_check_hwblock_state(void)
1220{
1221 int res = hotkey_get_wlsw();
1222 int hw_blocked;
1223
1224 /* When unknown or unsupported, we have to assume it is unblocked */
1225 if (res < 0)
1226 return false;
1227
1228 hw_blocked = (res == TPACPI_RFK_RADIO_OFF);
1229 tpacpi_rfk_update_hwblock_state(hw_blocked);
1230
1231 return hw_blocked;
1232}
1233
1234static int tpacpi_rfk_hook_set_block(void *data, bool blocked)
1235{
1236 struct tpacpi_rfk *tp_rfk = data;
1237 int res;
1238
1239 dbg_printk(TPACPI_DBG_RFKILL,
1240 "request to change radio state to %s\n",
1241 blocked ? "blocked" : "unblocked");
1242
1243 /* try to set radio state */
1244 res = (tp_rfk->ops->set_status)(blocked ?
1245 TPACPI_RFK_RADIO_OFF : TPACPI_RFK_RADIO_ON);
1246
1247 /* and update the rfkill core with whatever the FW really did */
1248 tpacpi_rfk_update_swstate(tp_rfk);
1249
1250 return (res < 0) ? res : 0;
1251}
1252
1253static const struct rfkill_ops tpacpi_rfk_rfkill_ops = {
1254 .set_block = tpacpi_rfk_hook_set_block,
1255};
1256
1257static int __init tpacpi_new_rfkill(const enum tpacpi_rfk_id id,
1258 const struct tpacpi_rfk_ops *tp_rfkops,
0e74dc26
HMH		 1259 const enum rfkill_type rfktype,
1260 const char *name,
19d337df 1261 const bool set_default)
0e74dc26 1262{
19d337df 1263 struct tpacpi_rfk *atp_rfk;
0e74dc26 1264 int res;
06d5caf4 1265 bool sw_state = false;
5451a923 1266 bool hw_state;
06d5caf4 1267 int sw_status;
90d9d3c7 1268
19d337df
JB		 1269 BUG_ON(id >= TPACPI_RFK_SW_MAX || tpacpi_rfkill_switches[id]);
1270
19d337df
JB		 1271 atp_rfk = kzalloc(sizeof(struct tpacpi_rfk), GFP_KERNEL);
1272 if (atp_rfk)
1273 atp_rfk->rfkill = rfkill_alloc(name,
1274 &tpacpi_pdev->dev,
1275 rfktype,
1276 &tpacpi_rfk_rfkill_ops,
1277 atp_rfk);
1278 if (!atp_rfk || !atp_rfk->rfkill) {
0978e012 1279 pr_err("failed to allocate memory for rfkill class\n");
19d337df 1280 kfree(atp_rfk);
0e74dc26
HMH		 1281 return -ENOMEM;
1282 }
1283
19d337df
JB		 1284 atp_rfk->id = id;
1285 atp_rfk->ops = tp_rfkops;
0e74dc26 1286
06d5caf4
AJ		 1287 sw_status = (tp_rfkops->get_status)();
1288 if (sw_status < 0) {
0978e012
JP		 1289 pr_err("failed to read initial state for %s, error %d\n",
1290 name, sw_status);
b3fa1329 1291 } else {
06d5caf4 1292 sw_state = (sw_status == TPACPI_RFK_RADIO_OFF);
b3fa1329
AJ		 1293 if (set_default) {
1294 /* try to keep the initial state, since we ask the
1295 * firmware to preserve it across S5 in NVRAM */
06d5caf4 1296 rfkill_init_sw_state(atp_rfk->rfkill, sw_state);
b3fa1329
AJ		 1297 }
1298 }
5451a923
HMH		 1299 hw_state = tpacpi_rfk_check_hwblock_state();
1300 rfkill_set_hw_state(atp_rfk->rfkill, hw_state);
19d337df
JB		 1301
1302 res = rfkill_register(atp_rfk->rfkill);
0e74dc26 1303 if (res < 0) {
0978e012 1304 pr_err("failed to register %s rfkill switch: %d\n", name, res);
19d337df
JB		 1305 rfkill_destroy(atp_rfk->rfkill);
1306 kfree(atp_rfk);
0e74dc26
HMH		 1307 return res;
1308 }
1309
19d337df 1310 tpacpi_rfkill_switches[id] = atp_rfk;
5451a923 1311
0978e012 1312 pr_info("rfkill switch %s: radio is %sblocked\n",
5451a923 1313 name, (sw_state || hw_state) ? "" : "un");
0e74dc26
HMH		 1314 return 0;
1315}
1316
19d337df 1317static void tpacpi_destroy_rfkill(const enum tpacpi_rfk_id id)
73a94d86 1318{
19d337df
JB		 1319 struct tpacpi_rfk *tp_rfk;
1320
1321 BUG_ON(id >= TPACPI_RFK_SW_MAX);
1322
1323 tp_rfk = tpacpi_rfkill_switches[id];
1324 if (tp_rfk) {
1325 rfkill_unregister(tp_rfk->rfkill);
5f0dadb4 1326 rfkill_destroy(tp_rfk->rfkill);
19d337df
JB		 1327 tpacpi_rfkill_switches[id] = NULL;
1328 kfree(tp_rfk);
1329 }
73a94d86
HMH		 1330}
1331
1332static void printk_deprecated_rfkill_attribute(const char * const what)
1333{
1334 printk_deprecated_attribute(what,
1335 "Please switch to generic rfkill before year 2010");
1336}
1337
19d337df
JB		 1338/* sysfs <radio> enable ------------------------------------------------ */
1339static ssize_t tpacpi_rfk_sysfs_enable_show(const enum tpacpi_rfk_id id,
1340 struct device_attribute *attr,
1341 char *buf)
1342{
1343 int status;
1344
1345 printk_deprecated_rfkill_attribute(attr->attr.name);
1346
1347 /* This is in the ABI... */
1348 if (tpacpi_rfk_check_hwblock_state()) {
1349 status = TPACPI_RFK_RADIO_OFF;
1350 } else {
1351 status = tpacpi_rfk_update_swstate(tpacpi_rfkill_switches[id]);
1352 if (status < 0)
1353 return status;
1354 }
1355
1356 return snprintf(buf, PAGE_SIZE, "%d\n",
1357 (status == TPACPI_RFK_RADIO_ON) ? 1 : 0);
1358}
1359
1360static ssize_t tpacpi_rfk_sysfs_enable_store(const enum tpacpi_rfk_id id,
1361 struct device_attribute *attr,
1362 const char *buf, size_t count)
1363{
1364 unsigned long t;
1365 int res;
1366
1367 printk_deprecated_rfkill_attribute(attr->attr.name);
1368
1369 if (parse_strtoul(buf, 1, &t))
1370 return -EINVAL;
1371
1372 tpacpi_disclose_usertask(attr->attr.name, "set to %ld\n", t);
1373
1374 /* This is in the ABI... */
1375 if (tpacpi_rfk_check_hwblock_state() && !!t)
1376 return -EPERM;
1377
1378 res = tpacpi_rfkill_switches[id]->ops->set_status((!!t) ?
1379 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF);
1380 tpacpi_rfk_update_swstate(tpacpi_rfkill_switches[id]);
1381
1382 return (res < 0) ? res : count;
1383}
1384
1385/* procfs -------------------------------------------------------------- */
887965e6 1386static int tpacpi_rfk_procfs_read(const enum tpacpi_rfk_id id, struct seq_file *m)
19d337df 1387{
19d337df 1388 if (id >= TPACPI_RFK_SW_MAX)
887965e6 1389 seq_printf(m, "status:\t\tnot supported\n");
19d337df
JB		 1390 else {
1391 int status;
1392
1393 /* This is in the ABI... */
1394 if (tpacpi_rfk_check_hwblock_state()) {
1395 status = TPACPI_RFK_RADIO_OFF;
1396 } else {
1397 status = tpacpi_rfk_update_swstate(
1398 tpacpi_rfkill_switches[id]);
1399 if (status < 0)
1400 return status;
1401 }
1402
887965e6 1403 seq_printf(m, "status:\t\t%s\n",
19d337df
JB		 1404 (status == TPACPI_RFK_RADIO_ON) ?
1405 "enabled" : "disabled");
887965e6 1406 seq_printf(m, "commands:\tenable, disable\n");
19d337df
JB		 1407 }
1408
887965e6 1409 return 0;
19d337df
JB		 1410}
1411
1412static int tpacpi_rfk_procfs_write(const enum tpacpi_rfk_id id, char *buf)
1413{
1414 char *cmd;
1415 int status = -1;
1416 int res = 0;
1417
1418 if (id >= TPACPI_RFK_SW_MAX)
1419 return -ENODEV;
1420
1421 while ((cmd = next_cmd(&buf))) {
1422 if (strlencmp(cmd, "enable") == 0)
1423 status = TPACPI_RFK_RADIO_ON;
1424 else if (strlencmp(cmd, "disable") == 0)
1425 status = TPACPI_RFK_RADIO_OFF;
1426 else
1427 return -EINVAL;
1428 }
1429
1430 if (status != -1) {
1431 tpacpi_disclose_usertask("procfs", "attempt to %s %s\n",
1432 (status == TPACPI_RFK_RADIO_ON) ?
1433 "enable" : "disable",
1434 tpacpi_rfkill_names[id]);
1435 res = (tpacpi_rfkill_switches[id]->ops->set_status)(status);
1436 tpacpi_rfk_update_swstate(tpacpi_rfkill_switches[id]);
1437 }
1438
1439 return res;
1440}
1441
56b6aeb0 1442/*************************************************************************
b21a15f6 1443 * thinkpad-acpi driver attributes
56b6aeb0
HMH		 1444 */
1445
b21a15f6 1446/* interface_version --------------------------------------------------- */
ac3054c4 1447static ssize_t interface_version_show(struct device_driver *drv, char *buf)
1da177e4 1448{
b21a15f6
HMH		 1449 return snprintf(buf, PAGE_SIZE, "0x%08x\n", TPACPI_SYSFS_VERSION);
1450}
ac3054c4 1451static DRIVER_ATTR_RO(interface_version);
b21a15f6
HMH		 1452
1453/* debug_level --------------------------------------------------------- */
ac3054c4 1454static ssize_t debug_level_show(struct device_driver *drv, char *buf)
b21a15f6
HMH		 1455{
1456 return snprintf(buf, PAGE_SIZE, "0x%04x\n", dbg_level);
1457}
1458
ac3054c4
GKH		 1459static ssize_t debug_level_store(struct device_driver *drv, const char *buf,
1460 size_t count)
b21a15f6
HMH		 1461{
1462 unsigned long t;
1463
1464 if (parse_strtoul(buf, 0xffff, &t))
1465 return -EINVAL;
1466
1467 dbg_level = t;
1468
1469 return count;
1470}
ac3054c4 1471static DRIVER_ATTR_RW(debug_level);
b21a15f6
HMH		 1472
1473/* version ------------------------------------------------------------- */
ac3054c4 1474static ssize_t version_show(struct device_driver *drv, char *buf)
b21a15f6 1475{
35ff8b9f
HMH		 1476 return snprintf(buf, PAGE_SIZE, "%s v%s\n",
1477 TPACPI_DESC, TPACPI_VERSION);
b21a15f6 1478}
ac3054c4 1479static DRIVER_ATTR_RO(version);
b21a15f6
HMH		 1480
1481/* --------------------------------------------------------------------- */
1482
a73f3091
HMH		 1483#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
1484
a73f3091 1485/* wlsw_emulstate ------------------------------------------------------ */
ac3054c4 1486static ssize_t wlsw_emulstate_show(struct device_driver *drv, char *buf)
a73f3091
HMH		 1487{
1488 return snprintf(buf, PAGE_SIZE, "%d\n", !!tpacpi_wlsw_emulstate);
1489}
1490
ac3054c4
GKH		 1491static ssize_t wlsw_emulstate_store(struct device_driver *drv, const char *buf,
1492 size_t count)
a73f3091
HMH		 1493{
1494 unsigned long t;
1495
1496 if (parse_strtoul(buf, 1, &t))
1497 return -EINVAL;
1498
19d337df 1499 if (tpacpi_wlsw_emulstate != !!t) {
a73f3091 1500 tpacpi_wlsw_emulstate = !!t;
19d337df
JB		 1501 tpacpi_rfk_update_hwblock_state(!t); /* negative logic */
1502 }
a73f3091
HMH		 1503
1504 return count;
1505}
ac3054c4 1506static DRIVER_ATTR_RW(wlsw_emulstate);
a73f3091
HMH		 1507
1508/* bluetooth_emulstate ------------------------------------------------- */
ac3054c4 1509static ssize_t bluetooth_emulstate_show(struct device_driver *drv, char *buf)
a73f3091
HMH		 1510{
1511 return snprintf(buf, PAGE_SIZE, "%d\n", !!tpacpi_bluetooth_emulstate);
1512}
1513
ac3054c4
GKH		 1514static ssize_t bluetooth_emulstate_store(struct device_driver *drv,
1515 const char *buf, size_t count)
a73f3091
HMH		 1516{
1517 unsigned long t;
1518
1519 if (parse_strtoul(buf, 1, &t))
1520 return -EINVAL;
1521
1522 tpacpi_bluetooth_emulstate = !!t;
1523
1524 return count;
1525}
ac3054c4 1526static DRIVER_ATTR_RW(bluetooth_emulstate);
a73f3091
HMH		 1527
1528/* wwan_emulstate ------------------------------------------------- */
ac3054c4 1529static ssize_t wwan_emulstate_show(struct device_driver *drv, char *buf)
a73f3091
HMH		 1530{
1531 return snprintf(buf, PAGE_SIZE, "%d\n", !!tpacpi_wwan_emulstate);
1532}
1533
ac3054c4
GKH		 1534static ssize_t wwan_emulstate_store(struct device_driver *drv, const char *buf,
1535 size_t count)
a73f3091
HMH		 1536{
1537 unsigned long t;
1538
1539 if (parse_strtoul(buf, 1, &t))
1540 return -EINVAL;
1541
1542 tpacpi_wwan_emulstate = !!t;
1543
1544 return count;
1545}
ac3054c4 1546static DRIVER_ATTR_RW(wwan_emulstate);
a73f3091 1547
0045c0aa 1548/* uwb_emulstate ------------------------------------------------- */
ac3054c4 1549static ssize_t uwb_emulstate_show(struct device_driver *drv, char *buf)
0045c0aa
HMH		 1550{
1551 return snprintf(buf, PAGE_SIZE, "%d\n", !!tpacpi_uwb_emulstate);
1552}
1553
ac3054c4
GKH		 1554static ssize_t uwb_emulstate_store(struct device_driver *drv, const char *buf,
1555 size_t count)
0045c0aa
HMH		 1556{
1557 unsigned long t;
1558
1559 if (parse_strtoul(buf, 1, &t))
1560 return -EINVAL;
1561
1562 tpacpi_uwb_emulstate = !!t;
1563
1564 return count;
1565}
ac3054c4 1566static DRIVER_ATTR_RW(uwb_emulstate);
a73f3091
HMH		 1567#endif
1568
1569/* --------------------------------------------------------------------- */
1570
35ff8b9f 1571static struct driver_attribute *tpacpi_driver_attributes[] = {
b21a15f6
HMH		 1572 &driver_attr_debug_level, &driver_attr_version,
1573 &driver_attr_interface_version,
1574};
1575
1576static int __init tpacpi_create_driver_attributes(struct device_driver *drv)
1577{
1578 int i, res;
1579
1580 i = 0;
1581 res = 0;
1582 while (!res && i < ARRAY_SIZE(tpacpi_driver_attributes)) {
1583 res = driver_create_file(drv, tpacpi_driver_attributes[i]);
1584 i++;
1585 }
1586
a73f3091
HMH		 1587#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
1588 if (!res && dbg_wlswemul)
1589 res = driver_create_file(drv, &driver_attr_wlsw_emulstate);
1590 if (!res && dbg_bluetoothemul)
1591 res = driver_create_file(drv, &driver_attr_bluetooth_emulstate);
1592 if (!res && dbg_wwanemul)
1593 res = driver_create_file(drv, &driver_attr_wwan_emulstate);
0045c0aa
HMH		 1594 if (!res && dbg_uwbemul)
1595 res = driver_create_file(drv, &driver_attr_uwb_emulstate);
a73f3091
HMH		 1596#endif
1597
b21a15f6
HMH		 1598 return res;
1599}
1600
1601static void tpacpi_remove_driver_attributes(struct device_driver *drv)
1602{
1603 int i;
1604
35ff8b9f 1605 for (i = 0; i < ARRAY_SIZE(tpacpi_driver_attributes); i++)
b21a15f6 1606 driver_remove_file(drv, tpacpi_driver_attributes[i]);
a73f3091
HMH		 1607
1608#ifdef THINKPAD_ACPI_DEBUGFACILITIES
1609 driver_remove_file(drv, &driver_attr_wlsw_emulstate);
1610 driver_remove_file(drv, &driver_attr_bluetooth_emulstate);
1611 driver_remove_file(drv, &driver_attr_wwan_emulstate);
0045c0aa 1612 driver_remove_file(drv, &driver_attr_uwb_emulstate);
a73f3091 1613#endif
b21a15f6
HMH		 1614}
1615
600a99fa
HMH		 1616/*************************************************************************
1617 * Firmware Data
1618 */
1619
1620/*
1621 * Table of recommended minimum BIOS versions
1622 *
1623 * Reasons for listing:
9ddc5b6f 1624 * 1. Stable BIOS, listed because the unknown amount of
600a99fa
HMH		 1625 * bugs and bad ACPI behaviour on older versions
1626 *
1627 * 2. BIOS or EC fw with known bugs that trigger on Linux
1628 *
1629 * 3. BIOS with known reduced functionality in older versions
1630 *
1631 * We recommend the latest BIOS and EC version.
1632 * We only support the latest BIOS and EC fw version as a rule.
1633 *
1634 * Sources: IBM ThinkPad Public Web Documents (update changelogs),
1635 * Information from users in ThinkWiki
e675abaf
HMH		 1636 *
1637 * WARNING: we use this table also to detect that the machine is
1638 * a ThinkPad in some cases, so don't remove entries lightly.
600a99fa
HMH		 1639 */
1640
1641#define TPV_Q(__v, __id1, __id2, __bv1, __bv2) \
1642 { .vendor = (__v), \
1643 .bios = TPID(__id1, __id2), \
1644 .ec = TPACPI_MATCH_ANY, \
1645 .quirks = TPACPI_MATCH_ANY << 16 \
1646 | (__bv1) << 8 | (__bv2) }
1647
1648#define TPV_Q_X(__v, __bid1, __bid2, __bv1, __bv2, \
275014ae 1649 __eid, __ev1, __ev2) \
600a99fa
HMH		 1650 { .vendor = (__v), \
1651 .bios = TPID(__bid1, __bid2), \
275014ae 1652 .ec = __eid, \
600a99fa
HMH		 1653 .quirks = (__ev1) << 24 | (__ev2) << 16 \
1654 | (__bv1) << 8 | (__bv2) }
1655
1656#define TPV_QI0(__id1, __id2, __bv1, __bv2) \
1657 TPV_Q(PCI_VENDOR_ID_IBM, __id1, __id2, __bv1, __bv2)
1658
275014ae 1659/* Outdated IBM BIOSes often lack the EC id string */
600a99fa
HMH		 1660#define TPV_QI1(__id1, __id2, __bv1, __bv2, __ev1, __ev2) \
1661 TPV_Q_X(PCI_VENDOR_ID_IBM, __id1, __id2, \
275014ae
HMH		 1662 __bv1, __bv2, TPID(__id1, __id2), \
1663 __ev1, __ev2), \
1664 TPV_Q_X(PCI_VENDOR_ID_IBM, __id1, __id2, \
1665 __bv1, __bv2, TPACPI_MATCH_UNKNOWN, \
1666 __ev1, __ev2)
600a99fa 1667
275014ae 1668/* Outdated IBM BIOSes often lack the EC id string */
600a99fa
HMH		 1669#define TPV_QI2(__bid1, __bid2, __bv1, __bv2, \
1670 __eid1, __eid2, __ev1, __ev2) \
1671 TPV_Q_X(PCI_VENDOR_ID_IBM, __bid1, __bid2, \
275014ae
HMH		 1672 __bv1, __bv2, TPID(__eid1, __eid2), \
1673 __ev1, __ev2), \
1674 TPV_Q_X(PCI_VENDOR_ID_IBM, __bid1, __bid2, \
1675 __bv1, __bv2, TPACPI_MATCH_UNKNOWN, \
1676 __ev1, __ev2)
600a99fa
HMH		 1677
1678#define TPV_QL0(__id1, __id2, __bv1, __bv2) \
1679 TPV_Q(PCI_VENDOR_ID_LENOVO, __id1, __id2, __bv1, __bv2)
1680
1681#define TPV_QL1(__id1, __id2, __bv1, __bv2, __ev1, __ev2) \
1682 TPV_Q_X(PCI_VENDOR_ID_LENOVO, __id1, __id2, \
275014ae
HMH		 1683 __bv1, __bv2, TPID(__id1, __id2), \
1684 __ev1, __ev2)
600a99fa
HMH		 1685
1686#define TPV_QL2(__bid1, __bid2, __bv1, __bv2, \
1687 __eid1, __eid2, __ev1, __ev2) \
1688 TPV_Q_X(PCI_VENDOR_ID_LENOVO, __bid1, __bid2, \
275014ae
HMH		 1689 __bv1, __bv2, TPID(__eid1, __eid2), \
1690 __ev1, __ev2)
600a99fa
HMH		 1691
1692static const struct tpacpi_quirk tpacpi_bios_version_qtable[] __initconst = {
1693 /* Numeric models ------------------ */
1694 /* FW MODEL BIOS VERS */
1695 TPV_QI0('I', 'M', '6', '5'), /* 570 */
1696 TPV_QI0('I', 'U', '2', '6'), /* 570E */
1697 TPV_QI0('I', 'B', '5', '4'), /* 600 */
1698 TPV_QI0('I', 'H', '4', '7'), /* 600E */
1699 TPV_QI0('I', 'N', '3', '6'), /* 600E */
1700 TPV_QI0('I', 'T', '5', '5'), /* 600X */
1701 TPV_QI0('I', 'D', '4', '8'), /* 770, 770E, 770ED */
1702 TPV_QI0('I', 'I', '4', '2'), /* 770X */
1703 TPV_QI0('I', 'O', '2', '3'), /* 770Z */
1704
1705 /* A-series ------------------------- */
1706 /* FW MODEL BIOS VERS EC VERS */
1707 TPV_QI0('I', 'W', '5', '9'), /* A20m */
1708 TPV_QI0('I', 'V', '6', '9'), /* A20p */
1709 TPV_QI0('1', '0', '2', '6'), /* A21e, A22e */
1710 TPV_QI0('K', 'U', '3', '6'), /* A21e */
1711 TPV_QI0('K', 'X', '3', '6'), /* A21m, A22m */
1712 TPV_QI0('K', 'Y', '3', '8'), /* A21p, A22p */
1713 TPV_QI0('1', 'B', '1', '7'), /* A22e */
1714 TPV_QI0('1', '3', '2', '0'), /* A22m */
1715 TPV_QI0('1', 'E', '7', '3'), /* A30/p (0) */
1716 TPV_QI1('1', 'G', '4', '1', '1', '7'), /* A31/p (0) */
1717 TPV_QI1('1', 'N', '1', '6', '0', '7'), /* A31/p (0) */
1718
1719 /* G-series ------------------------- */
1720 /* FW MODEL BIOS VERS */
1721 TPV_QI0('1', 'T', 'A', '6'), /* G40 */
1722 TPV_QI0('1', 'X', '5', '7'), /* G41 */
1723
1724 /* R-series, T-series --------------- */
1725 /* FW MODEL BIOS VERS EC VERS */
1726 TPV_QI0('1', 'C', 'F', '0'), /* R30 */
1727 TPV_QI0('1', 'F', 'F', '1'), /* R31 */
1728 TPV_QI0('1', 'M', '9', '7'), /* R32 */
1729 TPV_QI0('1', 'O', '6', '1'), /* R40 */
1730 TPV_QI0('1', 'P', '6', '5'), /* R40 */
1731 TPV_QI0('1', 'S', '7', '0'), /* R40e */
1732 TPV_QI1('1', 'R', 'D', 'R', '7', '1'), /* R50/p, R51,
1733 T40/p, T41/p, T42/p (1) */
1734 TPV_QI1('1', 'V', '7', '1', '2', '8'), /* R50e, R51 (1) */
1735 TPV_QI1('7', '8', '7', '1', '0', '6'), /* R51e (1) */
1736 TPV_QI1('7', '6', '6', '9', '1', '6'), /* R52 (1) */
1737 TPV_QI1('7', '0', '6', '9', '2', '8'), /* R52, T43 (1) */
1738
1739 TPV_QI0('I', 'Y', '6', '1'), /* T20 */
1740 TPV_QI0('K', 'Z', '3', '4'), /* T21 */
1741 TPV_QI0('1', '6', '3', '2'), /* T22 */
1742 TPV_QI1('1', 'A', '6', '4', '2', '3'), /* T23 (0) */
1743 TPV_QI1('1', 'I', '7', '1', '2', '0'), /* T30 (0) */
1744 TPV_QI1('1', 'Y', '6', '5', '2', '9'), /* T43/p (1) */
1745
1746 TPV_QL1('7', '9', 'E', '3', '5', '0'), /* T60/p */
1747 TPV_QL1('7', 'C', 'D', '2', '2', '2'), /* R60, R60i */
90765c6a 1748 TPV_QL1('7', 'E', 'D', '0', '1', '5'), /* R60e, R60i */
600a99fa
HMH		 1749
1750 /* BIOS FW BIOS VERS EC FW EC VERS */
1751 TPV_QI2('1', 'W', '9', '0', '1', 'V', '2', '8'), /* R50e (1) */
1752 TPV_QL2('7', 'I', '3', '4', '7', '9', '5', '0'), /* T60/p wide */
1753
1754 /* X-series ------------------------- */
1755 /* FW MODEL BIOS VERS EC VERS */
1756 TPV_QI0('I', 'Z', '9', 'D'), /* X20, X21 */
1757 TPV_QI0('1', 'D', '7', '0'), /* X22, X23, X24 */
1758 TPV_QI1('1', 'K', '4', '8', '1', '8'), /* X30 (0) */
1759 TPV_QI1('1', 'Q', '9', '7', '2', '3'), /* X31, X32 (0) */
1760 TPV_QI1('1', 'U', 'D', '3', 'B', '2'), /* X40 (0) */
1761 TPV_QI1('7', '4', '6', '4', '2', '7'), /* X41 (0) */
1762 TPV_QI1('7', '5', '6', '0', '2', '0'), /* X41t (0) */
1763
90765c6a
HMH		 1764 TPV_QL1('7', 'B', 'D', '7', '4', '0'), /* X60/s */
1765 TPV_QL1('7', 'J', '3', '0', '1', '3'), /* X60t */
600a99fa
HMH		 1766
1767 /* (0) - older versions lack DMI EC fw string and functionality */
1768 /* (1) - older versions known to lack functionality */
1769};
1770
1771#undef TPV_QL1
1772#undef TPV_QL0
1773#undef TPV_QI2
1774#undef TPV_QI1
1775#undef TPV_QI0
1776#undef TPV_Q_X
1777#undef TPV_Q
1778
1779static void __init tpacpi_check_outdated_fw(void)
1780{
1781 unsigned long fwvers;
1782 u16 ec_version, bios_version;
1783
1784 fwvers = tpacpi_check_quirks(tpacpi_bios_version_qtable,
1785 ARRAY_SIZE(tpacpi_bios_version_qtable));
1786
1787 if (!fwvers)
1788 return;
1789
1790 bios_version = fwvers & 0xffffU;
1791 ec_version = (fwvers >> 16) & 0xffffU;
1792
1793 /* note that unknown versions are set to 0x0000 and we use that */
1794 if ((bios_version > thinkpad_id.bios_release) ||
1795 (ec_version > thinkpad_id.ec_release &&
1796 ec_version != TPACPI_MATCH_ANY)) {
1797 /*
1798 * The changelogs would let us track down the exact
1799 * reason, but it is just too much of a pain to track
1800 * it. We only list BIOSes that are either really
1801 * broken, or really stable to begin with, so it is
1802 * best if the user upgrades the firmware anyway.
1803 */
0978e012 1804 pr_warn("WARNING: Outdated ThinkPad BIOS/EC firmware\n");
5cac62ac 1805 pr_warn("WARNING: This firmware may be missing critical bug fixes and/or important features\n");
600a99fa
HMH		 1806 }
1807}
1808
e675abaf
HMH		 1809static bool __init tpacpi_is_fw_known(void)
1810{
1811 return tpacpi_check_quirks(tpacpi_bios_version_qtable,
1812 ARRAY_SIZE(tpacpi_bios_version_qtable)) != 0;
1813}
1814
b21a15f6
HMH		 1815/****************************************************************************
1816 ****************************************************************************
1817 *
1818 * Subdrivers
1819 *
1820 ****************************************************************************
1821 ****************************************************************************/
1822
1823/*************************************************************************
7a43f788 1824 * thinkpad-acpi metadata subdriver
b21a15f6
HMH		 1825 */
1826
887965e6 1827static int thinkpad_acpi_driver_read(struct seq_file *m)
1da177e4 1828{
887965e6
AD		 1829 seq_printf(m, "driver:\t\t%s\n", TPACPI_DESC);
1830 seq_printf(m, "version:\t%s\n", TPACPI_VERSION);
1831 return 0;
1da177e4
LT		 1832}
1833
a5763f22
HMH		 1834static struct ibm_struct thinkpad_acpi_driver_data = {
1835 .name = "driver",
1836 .read = thinkpad_acpi_driver_read,
1837};
1838
56b6aeb0
HMH		 1839/*************************************************************************
1840 * Hotkey subdriver
1841 */
1842
0d922e3b
HMH		 1843/*
1844 * ThinkPad firmware event model
1845 *
1846 * The ThinkPad firmware has two main event interfaces: normal ACPI
1847 * notifications (which follow the ACPI standard), and a private event
1848 * interface.
1849 *
1850 * The private event interface also issues events for the hotkeys. As
1851 * the driver gained features, the event handling code ended up being
1852 * built around the hotkey subdriver. This will need to be refactored
1853 * to a more formal event API eventually.
1854 *
1855 * Some "hotkeys" are actually supposed to be used as event reports,
1856 * such as "brightness has changed", "volume has changed", depending on
1857 * the ThinkPad model and how the firmware is operating.
1858 *
1859 * Unlike other classes, hotkey-class events have mask/unmask control on
1860 * non-ancient firmware. However, how it behaves changes a lot with the
1861 * firmware model and version.
1862 */
1863
f74a27d4
HMH		 1864enum { /* hot key scan codes (derived from ACPI DSDT) */
1865 TP_ACPI_HOTKEYSCAN_FNF1 = 0,
1866 TP_ACPI_HOTKEYSCAN_FNF2,
1867 TP_ACPI_HOTKEYSCAN_FNF3,
1868 TP_ACPI_HOTKEYSCAN_FNF4,
1869 TP_ACPI_HOTKEYSCAN_FNF5,
1870 TP_ACPI_HOTKEYSCAN_FNF6,
1871 TP_ACPI_HOTKEYSCAN_FNF7,
1872 TP_ACPI_HOTKEYSCAN_FNF8,
1873 TP_ACPI_HOTKEYSCAN_FNF9,
1874 TP_ACPI_HOTKEYSCAN_FNF10,
1875 TP_ACPI_HOTKEYSCAN_FNF11,
1876 TP_ACPI_HOTKEYSCAN_FNF12,
1877 TP_ACPI_HOTKEYSCAN_FNBACKSPACE,
1878 TP_ACPI_HOTKEYSCAN_FNINSERT,
1879 TP_ACPI_HOTKEYSCAN_FNDELETE,
1880 TP_ACPI_HOTKEYSCAN_FNHOME,
1881 TP_ACPI_HOTKEYSCAN_FNEND,
1882 TP_ACPI_HOTKEYSCAN_FNPAGEUP,
1883 TP_ACPI_HOTKEYSCAN_FNPAGEDOWN,
1884 TP_ACPI_HOTKEYSCAN_FNSPACE,
1885 TP_ACPI_HOTKEYSCAN_VOLUMEUP,
1886 TP_ACPI_HOTKEYSCAN_VOLUMEDOWN,
1887 TP_ACPI_HOTKEYSCAN_MUTE,
1888 TP_ACPI_HOTKEYSCAN_THINKPAD,
34a656d2
HMH		 1889 TP_ACPI_HOTKEYSCAN_UNK1,
1890 TP_ACPI_HOTKEYSCAN_UNK2,
1891 TP_ACPI_HOTKEYSCAN_UNK3,
1892 TP_ACPI_HOTKEYSCAN_UNK4,
1893 TP_ACPI_HOTKEYSCAN_UNK5,
1894 TP_ACPI_HOTKEYSCAN_UNK6,
1895 TP_ACPI_HOTKEYSCAN_UNK7,
1896 TP_ACPI_HOTKEYSCAN_UNK8,
1897
149c8c75
CK		 1898 /* Adaptive keyboard keycodes */
1899 TP_ACPI_HOTKEYSCAN_ADAPTIVE_START,
1900 TP_ACPI_HOTKEYSCAN_MUTE2 = TP_ACPI_HOTKEYSCAN_ADAPTIVE_START,
6a68d855
BN		 1901 TP_ACPI_HOTKEYSCAN_BRIGHTNESS_ZERO,
1902 TP_ACPI_HOTKEYSCAN_CLIPPING_TOOL,
1903 TP_ACPI_HOTKEYSCAN_CLOUD,
1904 TP_ACPI_HOTKEYSCAN_UNK9,
1905 TP_ACPI_HOTKEYSCAN_VOICE,
1906 TP_ACPI_HOTKEYSCAN_UNK10,
1907 TP_ACPI_HOTKEYSCAN_GESTURES,
1908 TP_ACPI_HOTKEYSCAN_UNK11,
1909 TP_ACPI_HOTKEYSCAN_UNK12,
1910 TP_ACPI_HOTKEYSCAN_UNK13,
1911 TP_ACPI_HOTKEYSCAN_CONFIG,
1912 TP_ACPI_HOTKEYSCAN_NEW_TAB,
1913 TP_ACPI_HOTKEYSCAN_RELOAD,
1914 TP_ACPI_HOTKEYSCAN_BACK,
1915 TP_ACPI_HOTKEYSCAN_MIC_DOWN,
1916 TP_ACPI_HOTKEYSCAN_MIC_UP,
1917 TP_ACPI_HOTKEYSCAN_MIC_CANCELLATION,
1918 TP_ACPI_HOTKEYSCAN_CAMERA_MODE,
1919 TP_ACPI_HOTKEYSCAN_ROTATE_DISPLAY,
1920
696c6523
CK		 1921 /* Lenovo extended keymap, starting at 0x1300 */
1922 TP_ACPI_HOTKEYSCAN_EXTENDED_START,
1923 /* first new observed key (star, favorites) is 0x1311 */
1924 TP_ACPI_HOTKEYSCAN_STAR = 69,
1925 TP_ACPI_HOTKEYSCAN_CLIPPING_TOOL2,
1926 TP_ACPI_HOTKEYSCAN_UNK25,
1927 TP_ACPI_HOTKEYSCAN_BLUETOOTH,
1928 TP_ACPI_HOTKEYSCAN_KEYBOARD,
1929
34a656d2
HMH		 1930 /* Hotkey keymap size */
1931 TPACPI_HOTKEY_MAP_LEN
f74a27d4
HMH		 1932};
1933
0d922e3b 1934enum { /* Keys/events available through NVRAM polling */
01e88f25
HMH		 1935 TPACPI_HKEY_NVRAM_KNOWN_MASK = 0x00fb88c0U,
1936 TPACPI_HKEY_NVRAM_GOOD_MASK = 0x00fb8000U,
1937};
1938
1939enum { /* Positions of some of the keys in hotkey masks */
1940 TP_ACPI_HKEY_DISPSWTCH_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNF7,
1941 TP_ACPI_HKEY_DISPXPAND_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNF8,
1942 TP_ACPI_HKEY_HIBERNATE_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNF12,
1943 TP_ACPI_HKEY_BRGHTUP_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNHOME,
1944 TP_ACPI_HKEY_BRGHTDWN_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNEND,
c685e20d 1945 TP_ACPI_HKEY_KBD_LIGHT_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNPAGEUP,
01e88f25
HMH		 1946 TP_ACPI_HKEY_ZOOM_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNSPACE,
1947 TP_ACPI_HKEY_VOLUP_MASK = 1 << TP_ACPI_HOTKEYSCAN_VOLUMEUP,
1948 TP_ACPI_HKEY_VOLDWN_MASK = 1 << TP_ACPI_HOTKEYSCAN_VOLUMEDOWN,
1949 TP_ACPI_HKEY_MUTE_MASK = 1 << TP_ACPI_HOTKEYSCAN_MUTE,
1950 TP_ACPI_HKEY_THINKPAD_MASK = 1 << TP_ACPI_HOTKEYSCAN_THINKPAD,
1951};
1952
1953enum { /* NVRAM to ACPI HKEY group map */
1954 TP_NVRAM_HKEY_GROUP_HK2 = TP_ACPI_HKEY_THINKPAD_MASK |
1955 TP_ACPI_HKEY_ZOOM_MASK |
1956 TP_ACPI_HKEY_DISPSWTCH_MASK |
1957 TP_ACPI_HKEY_HIBERNATE_MASK,
1958 TP_NVRAM_HKEY_GROUP_BRIGHTNESS = TP_ACPI_HKEY_BRGHTUP_MASK |
1959 TP_ACPI_HKEY_BRGHTDWN_MASK,
1960 TP_NVRAM_HKEY_GROUP_VOLUME = TP_ACPI_HKEY_VOLUP_MASK |
1961 TP_ACPI_HKEY_VOLDWN_MASK |
1962 TP_ACPI_HKEY_MUTE_MASK,
1963};
1964
1965#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
1966struct tp_nvram_state {
1967 u16 thinkpad_toggle:1;
1968 u16 zoom_toggle:1;
1969 u16 display_toggle:1;
1970 u16 thinklight_toggle:1;
1971 u16 hibernate_toggle:1;
1972 u16 displayexp_toggle:1;
1973 u16 display_state:1;
1974 u16 brightness_toggle:1;
1975 u16 volume_toggle:1;
1976 u16 mute:1;
1977
1978 u8 brightness_level;
1979 u8 volume_level;
1980};
1981
db25f16d 1982/* kthread for the hotkey poller */
01e88f25 1983static struct task_struct *tpacpi_hotkey_task;
db25f16d 1984
db25f16d 1985/*
0d922e3b
HMH		 1986 * Acquire mutex to write poller control variables as an
1987 * atomic block.
1988 *
1989 * Increment hotkey_config_change when changing them if you
1990 * want the kthread to forget old state.
db25f16d
HMH		 1991 *
1992 * See HOTKEY_CONFIG_CRITICAL_START/HOTKEY_CONFIG_CRITICAL_END
1993 */
01e88f25
HMH		 1994static struct mutex hotkey_thread_data_mutex;
1995static unsigned int hotkey_config_change;
1996
db25f16d
HMH		 1997/*
1998 * hotkey poller control variables
1999 *
2000 * Must be atomic or readers will also need to acquire mutex
0d922e3b
HMH		 2001 *
2002 * HOTKEY_CONFIG_CRITICAL_START/HOTKEY_CONFIG_CRITICAL_END
2003 * should be used only when the changes need to be taken as
2004 * a block, OR when one needs to force the kthread to forget
2005 * old state.
db25f16d
HMH		 2006 */
2007static u32 hotkey_source_mask; /* bit mask 0=ACPI,1=NVRAM */
2008static unsigned int hotkey_poll_freq = 10; /* Hz */
2009
2010#define HOTKEY_CONFIG_CRITICAL_START \
2011 do { \
2012 mutex_lock(&hotkey_thread_data_mutex); \
2013 hotkey_config_change++; \
2014 } while (0);
2015#define HOTKEY_CONFIG_CRITICAL_END \
2016 mutex_unlock(&hotkey_thread_data_mutex);
2017
01e88f25
HMH		 2018#else /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
2019
2020#define hotkey_source_mask 0U
db25f16d
HMH		 2021#define HOTKEY_CONFIG_CRITICAL_START
2022#define HOTKEY_CONFIG_CRITICAL_END
01e88f25
HMH		 2023
2024#endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
2025
f74a27d4
HMH		 2026static struct mutex hotkey_mutex;
2027
a713b4d7
HMH		 2028static enum { /* Reasons for waking up */
2029 TP_ACPI_WAKEUP_NONE = 0, /* None or unknown */
2030 TP_ACPI_WAKEUP_BAYEJ, /* Bay ejection request */
2031 TP_ACPI_WAKEUP_UNDOCK, /* Undock request */
2032} hotkey_wakeup_reason;
2033
2034static int hotkey_autosleep_ack;
2035
0d922e3b
HMH		 2036static u32 hotkey_orig_mask; /* events the BIOS had enabled */
2037static u32 hotkey_all_mask; /* all events supported in fw */
0118c2d3 2038static u32 hotkey_adaptive_all_mask; /* all adaptive events supported in fw */
0d922e3b
HMH		 2039static u32 hotkey_reserved_mask; /* events better left disabled */
2040static u32 hotkey_driver_mask; /* events needed by the driver */
2041static u32 hotkey_user_mask; /* events visible to userspace */
2042static u32 hotkey_acpi_mask; /* events enabled in firmware */
6a38abbf 2043
edf0e0e5 2044static u16 *hotkey_keycode_map;
78f81cc4 2045
94954cc6 2046static struct attribute_set *hotkey_dev_attributes;
a0416420 2047
8b468c0c
HMH		 2048static void tpacpi_driver_event(const unsigned int hkey_event);
2049static void hotkey_driver_event(const unsigned int scancode);
7f0cf712 2050static void hotkey_poll_setup(const bool may_warn);
8b468c0c 2051
6c231bd5
HMH		 2052/* HKEY.MHKG() return bits */
2053#define TP_HOTKEY_TABLET_MASK (1 << 3)
dda3ec0a
BB		 2054enum {
2055 TP_ACPI_MULTI_MODE_INVALID = 0,
2056 TP_ACPI_MULTI_MODE_UNKNOWN = 1 << 0,
2057 TP_ACPI_MULTI_MODE_LAPTOP = 1 << 1,
2058 TP_ACPI_MULTI_MODE_TABLET = 1 << 2,
2059 TP_ACPI_MULTI_MODE_FLAT = 1 << 3,
2060 TP_ACPI_MULTI_MODE_STAND = 1 << 4,
2061 TP_ACPI_MULTI_MODE_TENT = 1 << 5,
2062 TP_ACPI_MULTI_MODE_STAND_TENT = 1 << 6,
2063};
2064
2065enum {
2066 /* The following modes are considered tablet mode for the purpose of
2067 * reporting the status to userspace. i.e. in all these modes it makes
2068 * sense to disable the laptop input devices such as touchpad and
2069 * keyboard.
2070 */
2071 TP_ACPI_MULTI_MODE_TABLET_LIKE = TP_ACPI_MULTI_MODE_TABLET |
2072 TP_ACPI_MULTI_MODE_STAND |
2073 TP_ACPI_MULTI_MODE_TENT |
2074 TP_ACPI_MULTI_MODE_STAND_TENT,
2075};
6c231bd5 2076
19d337df 2077static int hotkey_get_wlsw(void)
74941a69 2078{
19d337df
JB		 2079 int status;
2080
2081 if (!tp_features.hotkey_wlsw)
2082 return -ENODEV;
2083
a73f3091 2084#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
19d337df
JB		 2085 if (dbg_wlswemul)
2086 return (tpacpi_wlsw_emulstate) ?
2087 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF;
a73f3091 2088#endif
19d337df
JB		 2089
2090 if (!acpi_evalf(hkey_handle, &status, "WLSW", "d"))
74941a69 2091 return -EIO;
19d337df
JB		 2092
2093 return (status) ? TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF;
74941a69
HMH		 2094}
2095
dda3ec0a
BB		 2096static int hotkey_gmms_get_tablet_mode(int s, int *has_tablet_mode)
2097{
2098 int type = (s >> 16) & 0xffff;
2099 int value = s & 0xffff;
2100 int mode = TP_ACPI_MULTI_MODE_INVALID;
2101 int valid_modes = 0;
2102
2103 if (has_tablet_mode)
2104 *has_tablet_mode = 0;
2105
2106 switch (type) {
2107 case 1:
2108 valid_modes = TP_ACPI_MULTI_MODE_LAPTOP |
2109 TP_ACPI_MULTI_MODE_TABLET |
2110 TP_ACPI_MULTI_MODE_STAND_TENT;
2111 break;
2112 case 2:
2113 valid_modes = TP_ACPI_MULTI_MODE_LAPTOP |
2114 TP_ACPI_MULTI_MODE_FLAT |
2115 TP_ACPI_MULTI_MODE_TABLET |
2116 TP_ACPI_MULTI_MODE_STAND |
2117 TP_ACPI_MULTI_MODE_TENT;
2118 break;
2119 case 3:
2120 valid_modes = TP_ACPI_MULTI_MODE_LAPTOP |
2121 TP_ACPI_MULTI_MODE_FLAT;
2122 break;
2123 case 4:
dda3ec0a 2124 case 5:
26befef0
BB		 2125 /* In mode 4, FLAT is not specified as a valid mode. However,
2126 * it can be seen at least on the X1 Yoga 2nd Generation.
2127 */
dda3ec0a
BB		 2128 valid_modes = TP_ACPI_MULTI_MODE_LAPTOP |
2129 TP_ACPI_MULTI_MODE_FLAT |
2130 TP_ACPI_MULTI_MODE_TABLET |
2131 TP_ACPI_MULTI_MODE_STAND |
2132 TP_ACPI_MULTI_MODE_TENT;
2133 break;
2134 default:
2135 pr_err("Unknown multi mode status type %d with value 0x%04X, please report this to %s\n",
2136 type, value, TPACPI_MAIL);
2137 return 0;
2138 }
2139
2140 if (has_tablet_mode && (valid_modes & TP_ACPI_MULTI_MODE_TABLET_LIKE))
2141 *has_tablet_mode = 1;
2142
2143 switch (value) {
2144 case 1:
2145 mode = TP_ACPI_MULTI_MODE_LAPTOP;
2146 break;
2147 case 2:
2148 mode = TP_ACPI_MULTI_MODE_FLAT;
2149 break;
2150 case 3:
2151 mode = TP_ACPI_MULTI_MODE_TABLET;
2152 break;
2153 case 4:
2154 if (type == 1)
2155 mode = TP_ACPI_MULTI_MODE_STAND_TENT;
2156 else
2157 mode = TP_ACPI_MULTI_MODE_STAND;
2158 break;
2159 case 5:
2160 mode = TP_ACPI_MULTI_MODE_TENT;
2161 break;
2162 default:
2163 if (type == 5 && value == 0xffff) {
2164 pr_warn("Multi mode status is undetected, assuming laptop\n");
2165 return 0;
2166 }
2167 }
2168
2169 if (!(mode & valid_modes)) {
2170 pr_err("Unknown/reserved multi mode value 0x%04X for type %d, please report this to %s\n",
2171 value, type, TPACPI_MAIL);
2172 return 0;
2173 }
2174
2175 return !!(mode & TP_ACPI_MULTI_MODE_TABLET_LIKE);
2176}
2177
6c231bd5
HMH		 2178static int hotkey_get_tablet_mode(int *status)
2179{
2180 int s;
2181
b03f4d49
L		 2182 switch (tp_features.hotkey_tablet) {
2183 case TP_HOTKEY_TABLET_USES_MHKG:
2184 if (!acpi_evalf(hkey_handle, &s, "MHKG", "d"))
2185 return -EIO;
2186
2187 *status = ((s & TP_HOTKEY_TABLET_MASK) != 0);
2188 break;
dda3ec0a
BB		 2189 case TP_HOTKEY_TABLET_USES_GMMS:
2190 if (!acpi_evalf(hkey_handle, &s, "GMMS", "dd", 0))
b03f4d49
L		 2191 return -EIO;
2192
dda3ec0a 2193 *status = hotkey_gmms_get_tablet_mode(s, NULL);
b03f4d49
L		 2194 break;
2195 default:
2196 break;
2197 }
6c231bd5 2198
cee47f5a 2199 return 0;
6c231bd5
HMH		 2200}
2201
b2c985e7 2202/*
0d922e3b
HMH		 2203 * Reads current event mask from firmware, and updates
2204 * hotkey_acpi_mask accordingly. Also resets any bits
2205 * from hotkey_user_mask that are unavailable to be
2206 * delivered (shadow requirement of the userspace ABI).
2207 *
b2c985e7
HMH		 2208 * Call with hotkey_mutex held
2209 */
2210static int hotkey_mask_get(void)
2211{
2212 if (tp_features.hotkey_mask) {
0d922e3b
HMH		 2213 u32 m = 0;
2214
01e88f25 2215 if (!acpi_evalf(hkey_handle, &m, "DHKN", "d"))
b2c985e7 2216 return -EIO;
0d922e3b
HMH		 2217
2218 hotkey_acpi_mask = m;
2219 } else {
2220 /* no mask support doesn't mean no event support... */
2221 hotkey_acpi_mask = hotkey_all_mask;
b2c985e7 2222 }
0d922e3b
HMH		 2223
2224 /* sync userspace-visible mask */
2225 hotkey_user_mask &= (hotkey_acpi_mask | hotkey_source_mask);
b2c985e7
HMH		 2226
2227 return 0;
2228}
2229
df6dd1b3 2230static void hotkey_mask_warn_incomplete_mask(void)
0d922e3b
HMH		 2231{
2232 /* log only what the user can fix... */
2233 const u32 wantedmask = hotkey_driver_mask &
2234 ~(hotkey_acpi_mask | hotkey_source_mask) &
2235 (hotkey_all_mask | TPACPI_HKEY_NVRAM_KNOWN_MASK);
2236
2237 if (wantedmask)
0978e012 2238 pr_notice("required events 0x%08x not enabled!\n", wantedmask);
0d922e3b
HMH		 2239}
2240
b2c985e7 2241/*
0d922e3b
HMH		 2242 * Set the firmware mask when supported
2243 *
2244 * Also calls hotkey_mask_get to update hotkey_acpi_mask.
2245 *
2246 * NOTE: does not set bits in hotkey_user_mask, but may reset them.
2247 *
b2c985e7
HMH		 2248 * Call with hotkey_mutex held
2249 */
2250static int hotkey_mask_set(u32 mask)
2251{
2252 int i;
2253 int rc = 0;
2254
0d922e3b 2255 const u32 fwmask = mask & ~hotkey_source_mask;
92889022 2256
0d922e3b 2257 if (tp_features.hotkey_mask) {
b2c985e7 2258 for (i = 0; i < 32; i++) {
b2c985e7
HMH		 2259 if (!acpi_evalf(hkey_handle,
2260 NULL, "MHKM", "vdd", i + 1,
0d922e3b 2261 !!(mask & (1 << i)))) {
b2c985e7
HMH		 2262 rc = -EIO;
2263 break;
b2c985e7
HMH		 2264 }
2265 }
0d922e3b 2266 }
b2c985e7 2267
0d922e3b
HMH		 2268 /*
2269 * We *must* make an inconditional call to hotkey_mask_get to
2270 * refresh hotkey_acpi_mask and update hotkey_user_mask
2271 *
2272 * Take the opportunity to also log when we cannot _enable_
2273 * a given event.
2274 */
2275 if (!hotkey_mask_get() && !rc && (fwmask & ~hotkey_acpi_mask)) {
5cac62ac 2276 pr_notice("asked for hotkey mask 0x%08x, but firmware forced it to 0x%08x\n",
0978e012 2277 fwmask, hotkey_acpi_mask);
b2c985e7
HMH		 2278 }
2279
6b30eb7d
HMH		 2280 if (tpacpi_lifecycle != TPACPI_LIFE_EXITING)
2281 hotkey_mask_warn_incomplete_mask();
0d922e3b
HMH		 2282
2283 return rc;
2284}
2285
2286/*
2287 * Sets hotkey_user_mask and tries to set the firmware mask
2288 *
2289 * Call with hotkey_mutex held
2290 */
2291static int hotkey_user_mask_set(const u32 mask)
2292{
2293 int rc;
2294
2295 /* Give people a chance to notice they are doing something that
2296 * is bound to go boom on their users sooner or later */
2297 if (!tp_warned.hotkey_mask_ff &&
2298 (mask == 0xffff || mask == 0xffffff ||
2299 mask == 0xffffffff)) {
2300 tp_warned.hotkey_mask_ff = 1;
5cac62ac
AS		 2301 pr_notice("setting the hotkey mask to 0x%08x is likely not the best way to go about it\n",
2302 mask);
2303 pr_notice("please consider using the driver defaults, and refer to up-to-date thinkpad-acpi documentation\n");
0d922e3b
HMH		 2304 }
2305
2306 /* Try to enable what the user asked for, plus whatever we need.
2307 * this syncs everything but won't enable bits in hotkey_user_mask */
2308 rc = hotkey_mask_set((mask | hotkey_driver_mask) & ~hotkey_source_mask);
2309
2310 /* Enable the available bits in hotkey_user_mask */
2311 hotkey_user_mask = mask & (hotkey_acpi_mask | hotkey_source_mask);
2312
b2c985e7
HMH		 2313 return rc;
2314}
2315
8b468c0c
HMH		 2316/*
2317 * Sets the driver hotkey mask.
2318 *
2319 * Can be called even if the hotkey subdriver is inactive
2320 */
2321static int tpacpi_hotkey_driver_mask_set(const u32 mask)
2322{
2323 int rc;
2324
2325 /* Do the right thing if hotkey_init has not been called yet */
2326 if (!tp_features.hotkey) {
2327 hotkey_driver_mask = mask;
2328 return 0;
2329 }
2330
2331 mutex_lock(&hotkey_mutex);
2332
2333 HOTKEY_CONFIG_CRITICAL_START
2334 hotkey_driver_mask = mask;
b684a363 2335#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
8b468c0c 2336 hotkey_source_mask |= (mask & ~hotkey_all_mask);
b684a363 2337#endif
8b468c0c
HMH		 2338 HOTKEY_CONFIG_CRITICAL_END
2339
2340 rc = hotkey_mask_set((hotkey_acpi_mask | hotkey_driver_mask) &
2341 ~hotkey_source_mask);
7f0cf712
HMH		 2342 hotkey_poll_setup(true);
2343
8b468c0c
HMH		 2344 mutex_unlock(&hotkey_mutex);
2345
2346 return rc;
2347}
2348
b2c985e7
HMH		 2349static int hotkey_status_get(int *status)
2350{
2351 if (!acpi_evalf(hkey_handle, status, "DHKC", "d"))
2352 return -EIO;
2353
2354 return 0;
2355}
2356
2586d566 2357static int hotkey_status_set(bool enable)
b2c985e7 2358{
2586d566 2359 if (!acpi_evalf(hkey_handle, NULL, "MHKC", "vd", enable ? 1 : 0))
b2c985e7
HMH		 2360 return -EIO;
2361
2362 return 0;
2363}
2364
6c231bd5 2365static void tpacpi_input_send_tabletsw(void)
b3ec6f91 2366{
6c231bd5 2367 int state;
b3ec6f91 2368
6c231bd5
HMH		 2369 if (tp_features.hotkey_tablet &&
2370 !hotkey_get_tablet_mode(&state)) {
2371 mutex_lock(&tpacpi_inputdev_send_mutex);
b3ec6f91 2372
6c231bd5
HMH		 2373 input_report_switch(tpacpi_inputdev,
2374 SW_TABLET_MODE, !!state);
2375 input_sync(tpacpi_inputdev);
2376
2377 mutex_unlock(&tpacpi_inputdev_send_mutex);
2378 }
b3ec6f91
HMH		 2379}
2380
0d922e3b
HMH		 2381/* Do NOT call without validating scancode first */
2382static void tpacpi_input_send_key(const unsigned int scancode)
b7c8c200 2383{
0d922e3b 2384 const unsigned int keycode = hotkey_keycode_map[scancode];
b7c8c200
HMH		 2385
2386 if (keycode != KEY_RESERVED) {
2387 mutex_lock(&tpacpi_inputdev_send_mutex);
2388
5ffba7e6 2389 input_event(tpacpi_inputdev, EV_MSC, MSC_SCAN, scancode);
b7c8c200 2390 input_report_key(tpacpi_inputdev, keycode, 1);
b7c8c200
HMH		 2391 input_sync(tpacpi_inputdev);
2392
5ffba7e6 2393 input_event(tpacpi_inputdev, EV_MSC, MSC_SCAN, scancode);
b7c8c200 2394 input_report_key(tpacpi_inputdev, keycode, 0);
b7c8c200
HMH		 2395 input_sync(tpacpi_inputdev);
2396
2397 mutex_unlock(&tpacpi_inputdev_send_mutex);
2398 }
2399}
2400
0d922e3b
HMH		 2401/* Do NOT call without validating scancode first */
2402static void tpacpi_input_send_key_masked(const unsigned int scancode)
2403{
8b468c0c 2404 hotkey_driver_event(scancode);
0d922e3b
HMH		 2405 if (hotkey_user_mask & (1 << scancode))
2406 tpacpi_input_send_key(scancode);
2407}
2408
01e88f25
HMH		 2409#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
2410static struct tp_acpi_drv_struct ibm_hotkey_acpidriver;
2411
0d922e3b 2412/* Do NOT call without validating scancode first */
01e88f25
HMH		 2413static void tpacpi_hotkey_send_key(unsigned int scancode)
2414{
0d922e3b 2415 tpacpi_input_send_key_masked(scancode);
01e88f25
HMH		 2416}
2417
0d922e3b 2418static void hotkey_read_nvram(struct tp_nvram_state *n, const u32 m)
01e88f25
HMH		 2419{
2420 u8 d;
2421
2422 if (m & TP_NVRAM_HKEY_GROUP_HK2) {
2423 d = nvram_read_byte(TP_NVRAM_ADDR_HK2);
2424 n->thinkpad_toggle = !!(d & TP_NVRAM_MASK_HKT_THINKPAD);
2425 n->zoom_toggle = !!(d & TP_NVRAM_MASK_HKT_ZOOM);
2426 n->display_toggle = !!(d & TP_NVRAM_MASK_HKT_DISPLAY);
2427 n->hibernate_toggle = !!(d & TP_NVRAM_MASK_HKT_HIBERNATE);
2428 }
c685e20d 2429 if (m & TP_ACPI_HKEY_KBD_LIGHT_MASK) {
01e88f25
HMH		 2430 d = nvram_read_byte(TP_NVRAM_ADDR_THINKLIGHT);
2431 n->thinklight_toggle = !!(d & TP_NVRAM_MASK_THINKLIGHT);
2432 }
2433 if (m & TP_ACPI_HKEY_DISPXPAND_MASK) {
2434 d = nvram_read_byte(TP_NVRAM_ADDR_VIDEO);
2435 n->displayexp_toggle =
2436 !!(d & TP_NVRAM_MASK_HKT_DISPEXPND);
2437 }
2438 if (m & TP_NVRAM_HKEY_GROUP_BRIGHTNESS) {
2439 d = nvram_read_byte(TP_NVRAM_ADDR_BRIGHTNESS);
2440 n->brightness_level = (d & TP_NVRAM_MASK_LEVEL_BRIGHTNESS)
2441 >> TP_NVRAM_POS_LEVEL_BRIGHTNESS;
2442 n->brightness_toggle =
2443 !!(d & TP_NVRAM_MASK_HKT_BRIGHTNESS);
2444 }
2445 if (m & TP_NVRAM_HKEY_GROUP_VOLUME) {
2446 d = nvram_read_byte(TP_NVRAM_ADDR_MIXER);
2447 n->volume_level = (d & TP_NVRAM_MASK_LEVEL_VOLUME)
2448 >> TP_NVRAM_POS_LEVEL_VOLUME;
2449 n->mute = !!(d & TP_NVRAM_MASK_MUTE);
2450 n->volume_toggle = !!(d & TP_NVRAM_MASK_HKT_VOLUME);
2451 }
2452}
2453
2454#define TPACPI_COMPARE_KEY(__scancode, __member) \
a4d44ba1
BW		 2455do { \
2456 if ((event_mask & (1 << __scancode)) && \
2457 oldn->__member != newn->__member) \
2458 tpacpi_hotkey_send_key(__scancode); \
2459} while (0)
01e88f25
HMH		 2460
2461#define TPACPI_MAY_SEND_KEY(__scancode) \
a4d44ba1
BW		 2462do { \
2463 if (event_mask & (1 << __scancode)) \
2464 tpacpi_hotkey_send_key(__scancode); \
2465} while (0)
2466
2467static void issue_volchange(const unsigned int oldvol,
2468 const unsigned int newvol,
2469 const u32 event_mask)
2470{
2471 unsigned int i = oldvol;
2472
2473 while (i > newvol) {
2474 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEDOWN);
2475 i--;
5d756db9 2476 }
a4d44ba1
BW		 2477 while (i < newvol) {
2478 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEUP);
2479 i++;
2480 }
2481}
5d756db9 2482
a4d44ba1
BW		 2483static void issue_brightnesschange(const unsigned int oldbrt,
2484 const unsigned int newbrt,
2485 const u32 event_mask)
2486{
2487 unsigned int i = oldbrt;
28999022 2488
a4d44ba1
BW		 2489 while (i > newbrt) {
2490 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNEND);
2491 i--;
28999022 2492 }
a4d44ba1
BW		 2493 while (i < newbrt) {
2494 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNHOME);
2495 i++;
2496 }
2497}
2498
2499static void hotkey_compare_and_issue_event(struct tp_nvram_state *oldn,
2500 struct tp_nvram_state *newn,
2501 const u32 event_mask)
2502{
28999022 2503
01e88f25
HMH		 2504 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_THINKPAD, thinkpad_toggle);
2505 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNSPACE, zoom_toggle);
2506 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNF7, display_toggle);
2507 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNF12, hibernate_toggle);
2508
2509 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNPAGEUP, thinklight_toggle);
2510
2511 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNF8, displayexp_toggle);
2512
5d756db9
HMH		 2513 /*
2514 * Handle volume
2515 *
2516 * This code is supposed to duplicate the IBM firmware behaviour:
2517 * - Pressing MUTE issues mute hotkey message, even when already mute
2518 * - Pressing Volume up/down issues volume up/down hotkey messages,
c8440336 2519 * even when already at maximum or minimum volume
5d756db9
HMH		 2520 * - The act of unmuting issues volume up/down notification,
2521 * depending which key was used to unmute
2522 *
2523 * We are constrained to what the NVRAM can tell us, which is not much
2524 * and certainly not enough if more than one volume hotkey was pressed
2525 * since the last poll cycle.
2526 *
2527 * Just to make our life interesting, some newer Lenovo ThinkPads have
2528 * bugs in the BIOS and may fail to update volume_toggle properly.
2529 */
2530 if (newn->mute) {
2531 /* muted */
2532 if (!oldn->mute ||
2533 oldn->volume_toggle != newn->volume_toggle ||
2534 oldn->volume_level != newn->volume_level) {
2535 /* recently muted, or repeated mute keypress, or
2536 * multiple presses ending in mute */
a4d44ba1
BW		 2537 issue_volchange(oldn->volume_level, newn->volume_level,
2538 event_mask);
01e88f25
HMH		 2539 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_MUTE);
2540 }
5d756db9
HMH		 2541 } else {
2542 /* unmute */
2543 if (oldn->mute) {
2544 /* recently unmuted, issue 'unmute' keypress */
01e88f25 2545 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEUP);
5d756db9
HMH		 2546 }
2547 if (oldn->volume_level != newn->volume_level) {
a4d44ba1
BW		 2548 issue_volchange(oldn->volume_level, newn->volume_level,
2549 event_mask);
5d756db9
HMH		 2550 } else if (oldn->volume_toggle != newn->volume_toggle) {
2551 /* repeated vol up/down keypress at end of scale ? */
2552 if (newn->volume_level == 0)
01e88f25 2553 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEDOWN);
5d756db9
HMH		 2554 else if (newn->volume_level >= TP_NVRAM_LEVEL_VOLUME_MAX)
2555 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEUP);
01e88f25
HMH		 2556 }
2557 }
2558
2559 /* handle brightness */
28999022
HMH		 2560 if (oldn->brightness_level != newn->brightness_level) {
2561 issue_brightnesschange(oldn->brightness_level,
a4d44ba1 2562 newn->brightness_level, event_mask);
28999022
HMH		 2563 } else if (oldn->brightness_toggle != newn->brightness_toggle) {
2564 /* repeated key presses that didn't change state */
2565 if (newn->brightness_level == 0)
01e88f25 2566 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNEND);
28999022
HMH		 2567 else if (newn->brightness_level >= bright_maxlvl
2568 && !tp_features.bright_unkfw)
2569 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNHOME);
01e88f25 2570 }
01e88f25
HMH		 2571
2572#undef TPACPI_COMPARE_KEY
2573#undef TPACPI_MAY_SEND_KEY
0d922e3b 2574}
01e88f25 2575
0d922e3b
HMH		 2576/*
2577 * Polling driver
2578 *
2579 * We track all events in hotkey_source_mask all the time, since
2580 * most of them are edge-based. We only issue those requested by
2581 * hotkey_user_mask or hotkey_driver_mask, though.
2582 */
01e88f25
HMH		 2583static int hotkey_kthread(void *data)
2584{
2585 struct tp_nvram_state s[2];
0d922e3b 2586 u32 poll_mask, event_mask;
01e88f25
HMH		 2587 unsigned int si, so;
2588 unsigned long t;
8a32c441 2589 unsigned int change_detector;
db25f16d 2590 unsigned int poll_freq;
8a32c441 2591 bool was_frozen;
01e88f25 2592
01e88f25
HMH		 2593 if (tpacpi_lifecycle == TPACPI_LIFE_EXITING)
2594 goto exit;
2595
2596 set_freezable();
2597
2598 so = 0;
2599 si = 1;
2600 t = 0;
2601
2602 /* Initial state for compares */
2603 mutex_lock(&hotkey_thread_data_mutex);
2604 change_detector = hotkey_config_change;
0d922e3b
HMH		 2605 poll_mask = hotkey_source_mask;
2606 event_mask = hotkey_source_mask &
2607 (hotkey_driver_mask | hotkey_user_mask);
db25f16d 2608 poll_freq = hotkey_poll_freq;
01e88f25 2609 mutex_unlock(&hotkey_thread_data_mutex);
0d922e3b 2610 hotkey_read_nvram(&s[so], poll_mask);
01e88f25 2611
db25f16d
HMH		 2612 while (!kthread_should_stop()) {
2613 if (t == 0) {
2614 if (likely(poll_freq))
2615 t = 1000/poll_freq;
2616 else
2617 t = 100; /* should never happen... */
2618 }
01e88f25 2619 t = msleep_interruptible(t);
8a32c441 2620 if (unlikely(kthread_freezable_should_stop(&was_frozen)))
01e88f25 2621 break;
8a32c441
TH		 2622
2623 if (t > 0 && !was_frozen)
01e88f25
HMH		 2624 continue;
2625
2626 mutex_lock(&hotkey_thread_data_mutex);
8a32c441 2627 if (was_frozen || hotkey_config_change != change_detector) {
01e88f25
HMH		 2628 /* forget old state on thaw or config change */
2629 si = so;
2630 t = 0;
2631 change_detector = hotkey_config_change;
2632 }
0d922e3b
HMH		 2633 poll_mask = hotkey_source_mask;
2634 event_mask = hotkey_source_mask &
2635 (hotkey_driver_mask | hotkey_user_mask);
db25f16d 2636 poll_freq = hotkey_poll_freq;
01e88f25
HMH		 2637 mutex_unlock(&hotkey_thread_data_mutex);
2638
0d922e3b
HMH		 2639 if (likely(poll_mask)) {
2640 hotkey_read_nvram(&s[si], poll_mask);
01e88f25
HMH		 2641 if (likely(si != so)) {
2642 hotkey_compare_and_issue_event(&s[so], &s[si],
0d922e3b 2643 event_mask);
01e88f25
HMH		 2644 }
2645 }
2646
2647 so = si;
2648 si ^= 1;
2649 }
2650
2651exit:
01e88f25
HMH		 2652 return 0;
2653}
2654
db25f16d 2655/* call with hotkey_mutex held */
01e88f25
HMH		 2656static void hotkey_poll_stop_sync(void)
2657{
2658 if (tpacpi_hotkey_task) {
01e88f25
HMH		 2659 kthread_stop(tpacpi_hotkey_task);
2660 tpacpi_hotkey_task = NULL;
01e88f25
HMH		 2661 }
2662}
2663
2664/* call with hotkey_mutex held */
7f0cf712 2665static void hotkey_poll_setup(const bool may_warn)
01e88f25 2666{
0d922e3b
HMH		 2667 const u32 poll_driver_mask = hotkey_driver_mask & hotkey_source_mask;
2668 const u32 poll_user_mask = hotkey_user_mask & hotkey_source_mask;
db25f16d 2669
0d922e3b
HMH		 2670 if (hotkey_poll_freq > 0 &&
2671 (poll_driver_mask ||
2672 (poll_user_mask && tpacpi_inputdev->users > 0))) {
01e88f25
HMH		 2673 if (!tpacpi_hotkey_task) {
2674 tpacpi_hotkey_task = kthread_run(hotkey_kthread,
95e57ab2 2675 NULL, TPACPI_NVRAM_KTHREAD_NAME);
01e88f25
HMH		 2676 if (IS_ERR(tpacpi_hotkey_task)) {
2677 tpacpi_hotkey_task = NULL;
5cac62ac 2678 pr_err("could not create kernel thread for hotkey polling\n");
01e88f25
HMH		 2679 }
2680 }
2681 } else {
2682 hotkey_poll_stop_sync();
0d922e3b 2683 if (may_warn && (poll_driver_mask || poll_user_mask) &&
db25f16d 2684 hotkey_poll_freq == 0) {
5cac62ac 2685 pr_notice("hot keys 0x%08x and/or events 0x%08x require polling, which is currently disabled\n",
0978e012 2686 poll_user_mask, poll_driver_mask);
01e88f25
HMH		 2687 }
2688 }
2689}
2690
7f0cf712 2691static void hotkey_poll_setup_safe(const bool may_warn)
01e88f25
HMH		 2692{
2693 mutex_lock(&hotkey_mutex);
2694 hotkey_poll_setup(may_warn);
2695 mutex_unlock(&hotkey_mutex);
2696}
2697
db25f16d
HMH		 2698/* call with hotkey_mutex held */
2699static void hotkey_poll_set_freq(unsigned int freq)
2700{
2701 if (!freq)
2702 hotkey_poll_stop_sync();
2703
db25f16d 2704 hotkey_poll_freq = freq;
db25f16d
HMH		 2705}
2706
1bc6b9cd
HMH		 2707#else /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
2708
7f0cf712
HMH		 2709static void hotkey_poll_setup(const bool __unused)
2710{
2711}
2712
2713static void hotkey_poll_setup_safe(const bool __unused)
1bc6b9cd
HMH		 2714{
2715}
2716
2717#endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
2718
01e88f25
HMH		 2719static int hotkey_inputdev_open(struct input_dev *dev)
2720{
2721 switch (tpacpi_lifecycle) {
2722 case TPACPI_LIFE_INIT:
01e88f25 2723 case TPACPI_LIFE_RUNNING:
db25f16d 2724 hotkey_poll_setup_safe(false);
01e88f25 2725 return 0;
b589ea4c
HMH		 2726 case TPACPI_LIFE_EXITING:
2727 return -EBUSY;
01e88f25
HMH		 2728 }
2729
2730 /* Should only happen if tpacpi_lifecycle is corrupt */
2731 BUG();
2732 return -EBUSY;
2733}
2734
2735static void hotkey_inputdev_close(struct input_dev *dev)
2736{
2737 /* disable hotkey polling when possible */
b589ea4c 2738 if (tpacpi_lifecycle != TPACPI_LIFE_EXITING &&
0d922e3b 2739 !(hotkey_source_mask & hotkey_driver_mask))
db25f16d 2740 hotkey_poll_setup_safe(false);
01e88f25 2741}
01e88f25 2742
a0416420
HMH		 2743/* sysfs hotkey enable ------------------------------------------------- */
2744static ssize_t hotkey_enable_show(struct device *dev,
2745 struct device_attribute *attr,
2746 char *buf)
2747{
ae92bd17 2748 int res, status;
a0416420 2749
2586d566
HMH		 2750 printk_deprecated_attribute("hotkey_enable",
2751 "Hotkey reporting is always enabled");
2752
b2c985e7 2753 res = hotkey_status_get(&status);
a0416420
HMH		 2754 if (res)
2755 return res;
2756
2757 return snprintf(buf, PAGE_SIZE, "%d\n", status);
2758}
2759
2760static ssize_t hotkey_enable_store(struct device *dev,
2761 struct device_attribute *attr,
2762 const char *buf, size_t count)
2763{
2764 unsigned long t;
2586d566
HMH		 2765
2766 printk_deprecated_attribute("hotkey_enable",
2767 "Hotkeys can be disabled through hotkey_mask");
a0416420
HMH		 2768
2769 if (parse_strtoul(buf, 1, &t))
2770 return -EINVAL;
2771
2586d566
HMH		 2772 if (t == 0)
2773 return -EPERM;
a0416420 2774
2586d566 2775 return count;
a0416420
HMH		 2776}
2777
b4dd04ac 2778static DEVICE_ATTR_RW(hotkey_enable);
a0416420
HMH		 2779
2780/* sysfs hotkey mask --------------------------------------------------- */
2781static ssize_t hotkey_mask_show(struct device *dev,
2782 struct device_attribute *attr,
2783 char *buf)
2784{
0d922e3b 2785 return snprintf(buf, PAGE_SIZE, "0x%08x\n", hotkey_user_mask);
a0416420
HMH		 2786}
2787
2788static ssize_t hotkey_mask_store(struct device *dev,
2789 struct device_attribute *attr,
2790 const char *buf, size_t count)
2791{
2792 unsigned long t;
b2c985e7 2793 int res;
a0416420 2794
ae92bd17 2795 if (parse_strtoul(buf, 0xffffffffUL, &t))
a0416420
HMH		 2796 return -EINVAL;
2797
7646ea88 2798 if (mutex_lock_killable(&hotkey_mutex))
b2c985e7
HMH		 2799 return -ERESTARTSYS;
2800
0d922e3b 2801 res = hotkey_user_mask_set(t);
01e88f25
HMH		 2802
2803#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
db25f16d 2804 hotkey_poll_setup(true);
01e88f25
HMH		 2805#endif
2806
b2c985e7 2807 mutex_unlock(&hotkey_mutex);
a0416420 2808
56e2c200
HMH		 2809 tpacpi_disclose_usertask("hotkey_mask", "set to 0x%08lx\n", t);
2810
a0416420
HMH		 2811 return (res) ? res : count;
2812}
2813
b4dd04ac 2814static DEVICE_ATTR_RW(hotkey_mask);
a0416420
HMH		 2815
2816/* sysfs hotkey bios_enabled ------------------------------------------- */
2817static ssize_t hotkey_bios_enabled_show(struct device *dev,
2818 struct device_attribute *attr,
2819 char *buf)
2820{
2586d566 2821 return sprintf(buf, "0\n");
a0416420
HMH		 2822}
2823
b4dd04ac 2824static DEVICE_ATTR_RO(hotkey_bios_enabled);
a0416420
HMH		 2825
2826/* sysfs hotkey bios_mask ---------------------------------------------- */
2827static ssize_t hotkey_bios_mask_show(struct device *dev,
2828 struct device_attribute *attr,
2829 char *buf)
2830{
06777be6
HMH		 2831 printk_deprecated_attribute("hotkey_bios_mask",
2832 "This attribute is useless.");
ae92bd17 2833 return snprintf(buf, PAGE_SIZE, "0x%08x\n", hotkey_orig_mask);
a0416420
HMH		 2834}
2835
b4dd04ac 2836static DEVICE_ATTR_RO(hotkey_bios_mask);
a0416420 2837
9b010de5
HMH		 2838/* sysfs hotkey all_mask ----------------------------------------------- */
2839static ssize_t hotkey_all_mask_show(struct device *dev,
2840 struct device_attribute *attr,
2841 char *buf)
2842{
01e88f25
HMH		 2843 return snprintf(buf, PAGE_SIZE, "0x%08x\n",
2844 hotkey_all_mask | hotkey_source_mask);
9b010de5
HMH		 2845}
2846
b4dd04ac 2847static DEVICE_ATTR_RO(hotkey_all_mask);
9b010de5 2848
0118c2d3
DW		 2849/* sysfs hotkey all_mask ----------------------------------------------- */
2850static ssize_t hotkey_adaptive_all_mask_show(struct device *dev,
2851 struct device_attribute *attr,
2852 char *buf)
2853{
2854 return snprintf(buf, PAGE_SIZE, "0x%08x\n",
2855 hotkey_adaptive_all_mask | hotkey_source_mask);
2856}
2857
2858static DEVICE_ATTR_RO(hotkey_adaptive_all_mask);
2859
9b010de5
HMH		 2860/* sysfs hotkey recommended_mask --------------------------------------- */
2861static ssize_t hotkey_recommended_mask_show(struct device *dev,
2862 struct device_attribute *attr,
2863 char *buf)
2864{
2865 return snprintf(buf, PAGE_SIZE, "0x%08x\n",
01e88f25
HMH		 2866 (hotkey_all_mask | hotkey_source_mask)
2867 & ~hotkey_reserved_mask);
9b010de5
HMH		 2868}
2869
b4dd04ac 2870static DEVICE_ATTR_RO(hotkey_recommended_mask);
9b010de5 2871
01e88f25
HMH		 2872#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
2873
2874/* sysfs hotkey hotkey_source_mask ------------------------------------- */
2875static ssize_t hotkey_source_mask_show(struct device *dev,
2876 struct device_attribute *attr,
2877 char *buf)
2878{
2879 return snprintf(buf, PAGE_SIZE, "0x%08x\n", hotkey_source_mask);
2880}
2881
2882static ssize_t hotkey_source_mask_store(struct device *dev,
2883 struct device_attribute *attr,
2884 const char *buf, size_t count)
2885{
2886 unsigned long t;
0d922e3b
HMH		 2887 u32 r_ev;
2888 int rc;
01e88f25
HMH		 2889
2890 if (parse_strtoul(buf, 0xffffffffUL, &t) ||
2891 ((t & ~TPACPI_HKEY_NVRAM_KNOWN_MASK) != 0))
2892 return -EINVAL;
2893
7646ea88 2894 if (mutex_lock_killable(&hotkey_mutex))
01e88f25
HMH		 2895 return -ERESTARTSYS;
2896
2897 HOTKEY_CONFIG_CRITICAL_START
2898 hotkey_source_mask = t;
2899 HOTKEY_CONFIG_CRITICAL_END
2900
0d922e3b
HMH		 2901 rc = hotkey_mask_set((hotkey_user_mask | hotkey_driver_mask) &
2902 ~hotkey_source_mask);
db25f16d 2903 hotkey_poll_setup(true);
0d922e3b
HMH		 2904
2905 /* check if events needed by the driver got disabled */
2906 r_ev = hotkey_driver_mask & ~(hotkey_acpi_mask & hotkey_all_mask)
2907 & ~hotkey_source_mask & TPACPI_HKEY_NVRAM_KNOWN_MASK;
01e88f25
HMH		 2908
2909 mutex_unlock(&hotkey_mutex);
2910
0d922e3b 2911 if (rc < 0)
5cac62ac 2912 pr_err("hotkey_source_mask: failed to update the firmware event mask!\n");
0d922e3b
HMH		 2913
2914 if (r_ev)
5cac62ac 2915 pr_notice("hotkey_source_mask: some important events were disabled: 0x%04x\n",
0978e012 2916 r_ev);
0d922e3b 2917
56e2c200
HMH		 2918 tpacpi_disclose_usertask("hotkey_source_mask", "set to 0x%08lx\n", t);
2919
0d922e3b 2920 return (rc < 0) ? rc : count;
01e88f25
HMH		 2921}
2922
b4dd04ac 2923static DEVICE_ATTR_RW(hotkey_source_mask);
01e88f25
HMH		 2924
2925/* sysfs hotkey hotkey_poll_freq --------------------------------------- */
2926static ssize_t hotkey_poll_freq_show(struct device *dev,
2927 struct device_attribute *attr,
2928 char *buf)
2929{
2930 return snprintf(buf, PAGE_SIZE, "%d\n", hotkey_poll_freq);
2931}
2932
2933static ssize_t hotkey_poll_freq_store(struct device *dev,
2934 struct device_attribute *attr,
2935 const char *buf, size_t count)
2936{
2937 unsigned long t;
2938
2939 if (parse_strtoul(buf, 25, &t))
2940 return -EINVAL;
2941
7646ea88 2942 if (mutex_lock_killable(&hotkey_mutex))
01e88f25
HMH		 2943 return -ERESTARTSYS;
2944
db25f16d
HMH		 2945 hotkey_poll_set_freq(t);
2946 hotkey_poll_setup(true);
01e88f25 2947
01e88f25
HMH		 2948 mutex_unlock(&hotkey_mutex);
2949
56e2c200
HMH		 2950 tpacpi_disclose_usertask("hotkey_poll_freq", "set to %lu\n", t);
2951
01e88f25
HMH		 2952 return count;
2953}
2954
b4dd04ac 2955static DEVICE_ATTR_RW(hotkey_poll_freq);
01e88f25
HMH		 2956
2957#endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
2958
50ebec09 2959/* sysfs hotkey radio_sw (pollable) ------------------------------------ */
74941a69
HMH		 2960static ssize_t hotkey_radio_sw_show(struct device *dev,
2961 struct device_attribute *attr,
2962 char *buf)
2963{
19d337df
JB		 2964 int res;
2965 res = hotkey_get_wlsw();
74941a69
HMH		 2966 if (res < 0)
2967 return res;
2968
19d337df
JB		 2969 /* Opportunistic update */
2970 tpacpi_rfk_update_hwblock_state((res == TPACPI_RFK_RADIO_OFF));
2971
2972 return snprintf(buf, PAGE_SIZE, "%d\n",
2973 (res == TPACPI_RFK_RADIO_OFF) ? 0 : 1);
74941a69
HMH		 2974}
2975
b4dd04ac 2976static DEVICE_ATTR_RO(hotkey_radio_sw);
74941a69 2977
50ebec09
HMH		 2978static void hotkey_radio_sw_notify_change(void)
2979{
2980 if (tp_features.hotkey_wlsw)
2981 sysfs_notify(&tpacpi_pdev->dev.kobj, NULL,
2982 "hotkey_radio_sw");
2983}
2984
6c231bd5
HMH		 2985/* sysfs hotkey tablet mode (pollable) --------------------------------- */
2986static ssize_t hotkey_tablet_mode_show(struct device *dev,
2987 struct device_attribute *attr,
2988 char *buf)
2989{
2990 int res, s;
2991 res = hotkey_get_tablet_mode(&s);
2992 if (res < 0)
2993 return res;
2994
2995 return snprintf(buf, PAGE_SIZE, "%d\n", !!s);
2996}
2997
b4dd04ac 2998static DEVICE_ATTR_RO(hotkey_tablet_mode);
6c231bd5
HMH		 2999
3000static void hotkey_tablet_mode_notify_change(void)
3001{
3002 if (tp_features.hotkey_tablet)
3003 sysfs_notify(&tpacpi_pdev->dev.kobj, NULL,
3004 "hotkey_tablet_mode");
3005}
3006
50ebec09 3007/* sysfs wakeup reason (pollable) -------------------------------------- */
a713b4d7
HMH		 3008static ssize_t hotkey_wakeup_reason_show(struct device *dev,
3009 struct device_attribute *attr,
3010 char *buf)
3011{
3012 return snprintf(buf, PAGE_SIZE, "%d\n", hotkey_wakeup_reason);
3013}
3014
5fb73bc2 3015static DEVICE_ATTR(wakeup_reason, S_IRUGO, hotkey_wakeup_reason_show, NULL);
a713b4d7 3016
1d5a2b54 3017static void hotkey_wakeup_reason_notify_change(void)
50ebec09 3018{
0d922e3b
HMH		 3019 sysfs_notify(&tpacpi_pdev->dev.kobj, NULL,
3020 "wakeup_reason");
50ebec09
HMH		 3021}
3022
3023/* sysfs wakeup hotunplug_complete (pollable) -------------------------- */
a713b4d7
HMH		 3024static ssize_t hotkey_wakeup_hotunplug_complete_show(struct device *dev,
3025 struct device_attribute *attr,
3026 char *buf)
3027{
3028 return snprintf(buf, PAGE_SIZE, "%d\n", hotkey_autosleep_ack);
3029}
3030
5fb73bc2
BM		 3031static DEVICE_ATTR(wakeup_hotunplug_complete, S_IRUGO,
3032 hotkey_wakeup_hotunplug_complete_show, NULL);
a713b4d7 3033
1d5a2b54 3034static void hotkey_wakeup_hotunplug_complete_notify_change(void)
50ebec09 3035{
0d922e3b
HMH		 3036 sysfs_notify(&tpacpi_pdev->dev.kobj, NULL,
3037 "wakeup_hotunplug_complete");
50ebec09
HMH		 3038}
3039
b790ceeb
BN		 3040/* sysfs adaptive kbd mode --------------------------------------------- */
3041
3042static int adaptive_keyboard_get_mode(void);
3043static int adaptive_keyboard_set_mode(int new_mode);
3044
3045enum ADAPTIVE_KEY_MODE {
3046 HOME_MODE,
3047 WEB_BROWSER_MODE,
3048 WEB_CONFERENCE_MODE,
3049 FUNCTION_MODE,
3050 LAYFLAT_MODE
3051};
3052
3053static ssize_t adaptive_kbd_mode_show(struct device *dev,
3054 struct device_attribute *attr,
3055 char *buf)
3056{
abf9dc0d 3057 int current_mode;
b790ceeb
BN		 3058
3059 current_mode = adaptive_keyboard_get_mode();
3060 if (current_mode < 0)
3061 return current_mode;
3062
3063 return snprintf(buf, PAGE_SIZE, "%d\n", current_mode);
3064}
3065
3066static ssize_t adaptive_kbd_mode_store(struct device *dev,
3067 struct device_attribute *attr,
3068 const char *buf, size_t count)
3069{
3070 unsigned long t;
3071 int res;
3072
3073 if (parse_strtoul(buf, LAYFLAT_MODE, &t))
3074 return -EINVAL;
3075
3076 res = adaptive_keyboard_set_mode(t);
3077 return (res < 0) ? res : count;
3078}
3079
3080static DEVICE_ATTR_RW(adaptive_kbd_mode);
3081
3082static struct attribute *adaptive_kbd_attributes[] = {
3083 &dev_attr_adaptive_kbd_mode.attr,
3084 NULL
3085};
3086
3087static const struct attribute_group adaptive_kbd_attr_group = {
3088 .attrs = adaptive_kbd_attributes,
3089};
3090
a0416420
HMH		 3091/* --------------------------------------------------------------------- */
3092
ff80f137
HMH		 3093static struct attribute *hotkey_attributes[] __initdata = {
3094 &dev_attr_hotkey_enable.attr,
01e88f25 3095 &dev_attr_hotkey_bios_enabled.attr,
0d922e3b 3096 &dev_attr_hotkey_bios_mask.attr,
5fb73bc2
BM		 3097 &dev_attr_wakeup_reason.attr,
3098 &dev_attr_wakeup_hotunplug_complete.attr,
01e88f25
HMH		 3099 &dev_attr_hotkey_mask.attr,
3100 &dev_attr_hotkey_all_mask.attr,
0118c2d3 3101 &dev_attr_hotkey_adaptive_all_mask.attr,
01e88f25 3102 &dev_attr_hotkey_recommended_mask.attr,
0d922e3b 3103#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
01e88f25
HMH		 3104 &dev_attr_hotkey_source_mask.attr,
3105 &dev_attr_hotkey_poll_freq.attr,
3106#endif
ff80f137
HMH		 3107};
3108
19d337df
JB		 3109/*
3110 * Sync both the hw and sw blocking state of all switches
3111 */
733e27c1
HMH		 3112static void tpacpi_send_radiosw_update(void)
3113{
3114 int wlsw;
3115
19d337df
JB		 3116 /*
3117 * We must sync all rfkill controllers *before* issuing any
3118 * rfkill input events, or we will race the rfkill core input
3119 * handler.
3120 *
c8440336 3121 * tpacpi_inputdev_send_mutex works as a synchronization point
19d337df
JB		 3122 * for the above.
3123 *
3124 * We optimize to avoid numerous calls to hotkey_get_wlsw.
3125 */
3126
3127 wlsw = hotkey_get_wlsw();
3128
3129 /* Sync hw blocking state first if it is hw-blocked */
3130 if (wlsw == TPACPI_RFK_RADIO_OFF)
3131 tpacpi_rfk_update_hwblock_state(true);
0e74dc26 3132
19d337df
JB		 3133 /* Sync sw blocking state */
3134 tpacpi_rfk_update_swstate_all();
3135
3136 /* Sync hw blocking state last if it is hw-unblocked */
3137 if (wlsw == TPACPI_RFK_RADIO_ON)
3138 tpacpi_rfk_update_hwblock_state(false);
3139
3140 /* Issue rfkill input event for WLSW switch */
3141 if (!(wlsw < 0)) {
733e27c1
HMH		 3142 mutex_lock(&tpacpi_inputdev_send_mutex);
3143
3144 input_report_switch(tpacpi_inputdev,
19d337df 3145 SW_RFKILL_ALL, (wlsw > 0));
733e27c1
HMH		 3146 input_sync(tpacpi_inputdev);
3147
3148 mutex_unlock(&tpacpi_inputdev_send_mutex);
3149 }
19d337df
JB		 3150
3151 /*
3152 * this can be unconditional, as we will poll state again
3153 * if userspace uses the notify to read data
3154 */
733e27c1
HMH		 3155 hotkey_radio_sw_notify_change();
3156}
3157
9c0a76e1
HMH		 3158static void hotkey_exit(void)
3159{
3160#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
db25f16d 3161 mutex_lock(&hotkey_mutex);
9c0a76e1 3162 hotkey_poll_stop_sync();
db25f16d 3163 mutex_unlock(&hotkey_mutex);
9c0a76e1
HMH		 3164#endif
3165
3166 if (hotkey_dev_attributes)
3167 delete_attr_set(hotkey_dev_attributes, &tpacpi_pdev->dev.kobj);
3168
4be73005 3169 dbg_printk(TPACPI_DBG_EXIT | TPACPI_DBG_HKEY,
0d922e3b
HMH		 3170 "restoring original HKEY status and mask\n");
3171 /* yes, there is a bitwise or below, we want the
3172 * functions to be called even if one of them fail */
3173 if (((tp_features.hotkey_mask &&
3174 hotkey_mask_set(hotkey_orig_mask)) |
3175 hotkey_status_set(false)) != 0)
5cac62ac 3176 pr_err("failed to restore hot key mask to BIOS defaults\n");
9c0a76e1
HMH		 3177}
3178
de4c8cc7
HMH		 3179static void __init hotkey_unmap(const unsigned int scancode)
3180{
3181 if (hotkey_keycode_map[scancode] != KEY_RESERVED) {
3182 clear_bit(hotkey_keycode_map[scancode],
3183 tpacpi_inputdev->keybit);
3184 hotkey_keycode_map[scancode] = KEY_RESERVED;
3185 }
3186}
3187
0d922e3b
HMH		 3188/*
3189 * HKEY quirks:
3190 * TPACPI_HK_Q_INIMASK: Supports FN+F3,FN+F4,FN+F12
3191 */
3192
3193#define TPACPI_HK_Q_INIMASK 0x0001
3194
3195static const struct tpacpi_quirk tpacpi_hotkey_qtable[] __initconst = {
3196 TPACPI_Q_IBM('I', 'H', TPACPI_HK_Q_INIMASK), /* 600E */
3197 TPACPI_Q_IBM('I', 'N', TPACPI_HK_Q_INIMASK), /* 600E */
3198 TPACPI_Q_IBM('I', 'D', TPACPI_HK_Q_INIMASK), /* 770, 770E, 770ED */
3199 TPACPI_Q_IBM('I', 'W', TPACPI_HK_Q_INIMASK), /* A20m */
3200 TPACPI_Q_IBM('I', 'V', TPACPI_HK_Q_INIMASK), /* A20p */
3201 TPACPI_Q_IBM('1', '0', TPACPI_HK_Q_INIMASK), /* A21e, A22e */
3202 TPACPI_Q_IBM('K', 'U', TPACPI_HK_Q_INIMASK), /* A21e */
3203 TPACPI_Q_IBM('K', 'X', TPACPI_HK_Q_INIMASK), /* A21m, A22m */
3204 TPACPI_Q_IBM('K', 'Y', TPACPI_HK_Q_INIMASK), /* A21p, A22p */
3205 TPACPI_Q_IBM('1', 'B', TPACPI_HK_Q_INIMASK), /* A22e */
3206 TPACPI_Q_IBM('1', '3', TPACPI_HK_Q_INIMASK), /* A22m */
3207 TPACPI_Q_IBM('1', 'E', TPACPI_HK_Q_INIMASK), /* A30/p (0) */
3208 TPACPI_Q_IBM('1', 'C', TPACPI_HK_Q_INIMASK), /* R30 */
3209 TPACPI_Q_IBM('1', 'F', TPACPI_HK_Q_INIMASK), /* R31 */
3210 TPACPI_Q_IBM('I', 'Y', TPACPI_HK_Q_INIMASK), /* T20 */
3211 TPACPI_Q_IBM('K', 'Z', TPACPI_HK_Q_INIMASK), /* T21 */
3212 TPACPI_Q_IBM('1', '6', TPACPI_HK_Q_INIMASK), /* T22 */
3213 TPACPI_Q_IBM('I', 'Z', TPACPI_HK_Q_INIMASK), /* X20, X21 */
3214 TPACPI_Q_IBM('1', 'D', TPACPI_HK_Q_INIMASK), /* X22, X23, X24 */
3215};
3216
fc6e7568
HMH		 3217typedef u16 tpacpi_keymap_entry_t;
3218typedef tpacpi_keymap_entry_t tpacpi_keymap_t[TPACPI_HOTKEY_MAP_LEN];
d1e14dca 3219
b3180028
L		 3220static int hotkey_init_tablet_mode(void)
3221{
cb2bf251
DH		 3222 int in_tablet_mode = 0, res;
3223 char *type = NULL;
b3180028 3224
dda3ec0a
BB		 3225 if (acpi_evalf(hkey_handle, &res, "GMMS", "qdd", 0)) {
3226 int has_tablet_mode;
3227
3228 in_tablet_mode = hotkey_gmms_get_tablet_mode(res,
3229 &has_tablet_mode);
3230 if (has_tablet_mode)
3231 tp_features.hotkey_tablet = TP_HOTKEY_TABLET_USES_GMMS;
3232 type = "GMMS";
3233 } else if (acpi_evalf(hkey_handle, &res, "MHKG", "qd")) {
b03f4d49 3234 /* For X41t, X60t, X61t Tablets... */
b3180028
L		 3235 tp_features.hotkey_tablet = TP_HOTKEY_TABLET_USES_MHKG;
3236 in_tablet_mode = !!(res & TP_HOTKEY_TABLET_MASK);
3237 type = "MHKG";
3238 }
3239
3240 if (!tp_features.hotkey_tablet)
3241 return 0;
3242
3243 pr_info("Tablet mode switch found (type: %s), currently in %s mode\n",
3244 type, in_tablet_mode ? "tablet" : "laptop");
3245
3246 res = add_to_attr_set(hotkey_dev_attributes,
3247 &dev_attr_hotkey_tablet_mode.attr);
3248 if (res)
3249 return -1;
3250
3251 return in_tablet_mode;
3252}
3253
a5763f22 3254static int __init hotkey_init(struct ibm_init_struct *iibm)
56b6aeb0 3255{
0f089147
HMH		 3256 /* Requirements for changing the default keymaps:
3257 *
3258 * 1. Many of the keys are mapped to KEY_RESERVED for very
3259 * good reasons. Do not change them unless you have deep
3260 * knowledge on the IBM and Lenovo ThinkPad firmware for
3261 * the various ThinkPad models. The driver behaves
3262 * differently for KEY_RESERVED: such keys have their
3263 * hot key mask *unset* in mask_recommended, and also
3264 * in the initial hot key mask programmed into the
3265 * firmware at driver load time, which means the firm-
3266 * ware may react very differently if you change them to
3267 * something else;
3268 *
3269 * 2. You must be subscribed to the linux-thinkpad and
3270 * ibm-acpi-devel mailing lists, and you should read the
3271 * list archives since 2007 if you want to change the
3272 * keymaps. This requirement exists so that you will
3273 * know the past history of problems with the thinkpad-
3274 * acpi driver keymaps, and also that you will be
3275 * listening to any bug reports;
3276 *
3277 * 3. Do not send thinkpad-acpi specific patches directly to
3278 * for merging, *ever*. Send them to the linux-acpi
3279 * mailinglist for comments. Merging is to be done only
3280 * through acpi-test and the ACPI maintainer.
3281 *
3282 * If the above is too much to ask, don't change the keymap.
3283 * Ask the thinkpad-acpi maintainer to do it, instead.
3284 */
d1e14dca
HMH		 3285
3286 enum keymap_index {
3287 TPACPI_KEYMAP_IBM_GENERIC = 0,
3288 TPACPI_KEYMAP_LENOVO_GENERIC,
3289 };
3290
3291 static const tpacpi_keymap_t tpacpi_keymaps[] __initconst = {
3292 /* Generic keymap for IBM ThinkPads */
3293 [TPACPI_KEYMAP_IBM_GENERIC] = {
edf0e0e5 3294 /* Scan Codes 0x00 to 0x0B: ACPI HKEY FN+F1..F12 */
d1e14dca 3295 KEY_FN_F1, KEY_BATTERY, KEY_COFFEE, KEY_SLEEP,
edf0e0e5
HMH		 3296 KEY_WLAN, KEY_FN_F6, KEY_SWITCHVIDEOMODE, KEY_FN_F8,
3297 KEY_FN_F9, KEY_FN_F10, KEY_FN_F11, KEY_SUSPEND,
0f089147
HMH		 3298
3299 /* Scan codes 0x0C to 0x1F: Other ACPI HKEY hot keys */
edf0e0e5
HMH		 3300 KEY_UNKNOWN, /* 0x0C: FN+BACKSPACE */
3301 KEY_UNKNOWN, /* 0x0D: FN+INSERT */
3302 KEY_UNKNOWN, /* 0x0E: FN+DELETE */
0f089147 3303
0d922e3b 3304 /* brightness: firmware always reacts to them */
e927c08d 3305 KEY_RESERVED, /* 0x0F: FN+HOME (brightness up) */
e927c08d 3306 KEY_RESERVED, /* 0x10: FN+END (brightness down) */
0f089147
HMH		 3307
3308 /* Thinklight: firmware always react to it */
edf0e0e5 3309 KEY_RESERVED, /* 0x11: FN+PGUP (thinklight toggle) */
0f089147 3310
edf0e0e5
HMH		 3311 KEY_UNKNOWN, /* 0x12: FN+PGDOWN */
3312 KEY_ZOOM, /* 0x13: FN+SPACE (zoom) */
0f089147
HMH		 3313
3314 /* Volume: firmware always react to it and reprograms
3315 * the built-in *extra* mixer. Never map it to control
3316 * another mixer by default. */
e927c08d
HMH		 3317 KEY_RESERVED, /* 0x14: VOLUME UP */
3318 KEY_RESERVED, /* 0x15: VOLUME DOWN */
3319 KEY_RESERVED, /* 0x16: MUTE */
0f089147 3320
edf0e0e5 3321 KEY_VENDOR, /* 0x17: Thinkpad/AccessIBM/Lenovo */
0f089147 3322
edf0e0e5
HMH		 3323 /* (assignments unknown, please report if found) */
3324 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN,
3325 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN,
6a68d855
BN		 3326
3327 /* No assignments, only used for Adaptive keyboards. */
3328 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN,
3329 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN,
3330 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN,
3331 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN,
3332 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN,
696c6523
CK		 3333
3334 /* No assignment, used for newer Lenovo models */
3335 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN,
3336 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN,
3337 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN,
3338 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN,
3339 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN,
3340 KEY_UNKNOWN, KEY_UNKNOWN
3341
d1e14dca
HMH		 3342 },
3343
3344 /* Generic keymap for Lenovo ThinkPads */
3345 [TPACPI_KEYMAP_LENOVO_GENERIC] = {
edf0e0e5
HMH		 3346 /* Scan Codes 0x00 to 0x0B: ACPI HKEY FN+F1..F12 */
3347 KEY_FN_F1, KEY_COFFEE, KEY_BATTERY, KEY_SLEEP,
2b754262 3348 KEY_WLAN, KEY_CAMERA, KEY_SWITCHVIDEOMODE, KEY_FN_F8,
edf0e0e5 3349 KEY_FN_F9, KEY_FN_F10, KEY_FN_F11, KEY_SUSPEND,
0f089147
HMH		 3350
3351 /* Scan codes 0x0C to 0x1F: Other ACPI HKEY hot keys */
edf0e0e5
HMH		 3352 KEY_UNKNOWN, /* 0x0C: FN+BACKSPACE */
3353 KEY_UNKNOWN, /* 0x0D: FN+INSERT */
3354 KEY_UNKNOWN, /* 0x0E: FN+DELETE */
0f089147 3355
de4c8cc7
HMH		 3356 /* These should be enabled --only-- when ACPI video
3357 * is disabled (i.e. in "vendor" mode), and are handled
3358 * in a special way by the init code */
3359 KEY_BRIGHTNESSUP, /* 0x0F: FN+HOME (brightness up) */
3360 KEY_BRIGHTNESSDOWN, /* 0x10: FN+END (brightness down) */
0f089147 3361
edf0e0e5 3362 KEY_RESERVED, /* 0x11: FN+PGUP (thinklight toggle) */
0f089147 3363
edf0e0e5
HMH		 3364 KEY_UNKNOWN, /* 0x12: FN+PGDOWN */
3365 KEY_ZOOM, /* 0x13: FN+SPACE (zoom) */
0f089147
HMH		 3366
3367 /* Volume: z60/z61, T60 (BIOS version?): firmware always
3368 * react to it and reprograms the built-in *extra* mixer.
3369 * Never map it to control another mixer by default.
3370 *
3371 * T60?, T61, R60?, R61: firmware and EC tries to send
3372 * these over the regular keyboard, so these are no-ops,
3373 * but there are still weird bugs re. MUTE, so do not
3374 * change unless you get test reports from all Lenovo
3375 * models. May cause the BIOS to interfere with the
3376 * HDA mixer.
3377 */
e927c08d
HMH		 3378 KEY_RESERVED, /* 0x14: VOLUME UP */
3379 KEY_RESERVED, /* 0x15: VOLUME DOWN */
3380 KEY_RESERVED, /* 0x16: MUTE */
0f089147 3381
edf0e0e5 3382 KEY_VENDOR, /* 0x17: Thinkpad/AccessIBM/Lenovo */
0f089147 3383
33009557
AL		 3384 /* (assignments unknown, please report if found) */
3385 KEY_UNKNOWN, KEY_UNKNOWN,
3386
3387 /*
3388 * The mic mute button only sends 0x1a. It does not
3389 * automatically mute the mic or change the mute light.
3390 */
3391 KEY_MICMUTE, /* 0x1a: Mic mute (since ?400 or so) */
3392
edf0e0e5 3393 /* (assignments unknown, please report if found) */
33009557 3394 KEY_UNKNOWN,
8b9dd4fa
HG		 3395
3396 /* Extra keys in use since the X240 / T440 / T540 */
4beb81d1 3397 KEY_CONFIG, KEY_SEARCH, KEY_SCALE, KEY_FILE,
6a68d855
BN		 3398
3399 /*
3400 * These are the adaptive keyboard keycodes for Carbon X1 2014.
3401 * The first item in this list is the Mute button which is
3402 * emitted with 0x103 through
3403 * adaptive_keyboard_hotkey_notify_hotkey() when the sound
3404 * symbol is held.
3405 * We'll need to offset those by 0x20.
3406 */
3407 KEY_RESERVED, /* Mute held, 0x103 */
3408 KEY_BRIGHTNESS_MIN, /* Backlight off */
3409 KEY_RESERVED, /* Clipping tool */
3410 KEY_RESERVED, /* Cloud */
3411 KEY_RESERVED,
3412 KEY_VOICECOMMAND, /* Voice */
3413 KEY_RESERVED,
3414 KEY_RESERVED, /* Gestures */
3415 KEY_RESERVED,
3416 KEY_RESERVED,
3417 KEY_RESERVED,
3418 KEY_CONFIG, /* Settings */
3419 KEY_RESERVED, /* New tab */
3420 KEY_REFRESH, /* Reload */
3421 KEY_BACK, /* Back */
3422 KEY_RESERVED, /* Microphone down */
3423 KEY_RESERVED, /* Microphone up */
3424 KEY_RESERVED, /* Microphone cancellation */
3425 KEY_RESERVED, /* Camera mode */
3426 KEY_RESERVED, /* Rotate display, 0x116 */
696c6523
CK		 3427
3428 /*
3429 * These are found in 2017 models (e.g. T470s, X270).
3430 * The lowest known value is 0x311, which according to
3431 * the manual should launch a user defined favorite
3432 * application.
3433 *
3434 * The offset for these is TP_ACPI_HOTKEYSCAN_EXTENDED_START,
3435 * corresponding to 0x34.
3436 */
3437
3438 /* (assignments unknown, please report if found) */
3439 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN,
3440 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN,
3441 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN,
3442 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN,
3443 KEY_UNKNOWN,
3444
3445 KEY_FAVORITES, /* Favorite app, 0x311 */
3446 KEY_RESERVED, /* Clipping tool */
3447 KEY_RESERVED,
3448 KEY_BLUETOOTH, /* Bluetooth */
3449 KEY_KEYBOARD /* Keyboard, 0x315 */
d1e14dca 3450 },
edf0e0e5
HMH		 3451 };
3452
d1e14dca
HMH		 3453 static const struct tpacpi_quirk tpacpi_keymap_qtable[] __initconst = {
3454 /* Generic maps (fallback) */
3455 {
3456 .vendor = PCI_VENDOR_ID_IBM,
3457 .bios = TPACPI_MATCH_ANY, .ec = TPACPI_MATCH_ANY,
3458 .quirks = TPACPI_KEYMAP_IBM_GENERIC,
3459 },
3460 {
3461 .vendor = PCI_VENDOR_ID_LENOVO,
3462 .bios = TPACPI_MATCH_ANY, .ec = TPACPI_MATCH_ANY,
3463 .quirks = TPACPI_KEYMAP_LENOVO_GENERIC,
3464 },
3465 };
3466
3467#define TPACPI_HOTKEY_MAP_SIZE sizeof(tpacpi_keymap_t)
fc6e7568 3468#define TPACPI_HOTKEY_MAP_TYPESIZE sizeof(tpacpi_keymap_entry_t)
edf0e0e5 3469
6a38abbf 3470 int res, i;
74941a69 3471 int status;
1b6521dc 3472 int hkeyv;
d89a727a
HMH		 3473 bool radiosw_state = false;
3474 bool tabletsw_state = false;
b86c4722 3475
0d922e3b 3476 unsigned long quirks;
d1e14dca 3477 unsigned long keymap_id;
0d922e3b 3478
56e2c200
HMH		 3479 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY,
3480 "initializing hotkey subdriver\n");
fe08bc4b 3481
6a38abbf 3482 BUG_ON(!tpacpi_inputdev);
01e88f25
HMH		 3483 BUG_ON(tpacpi_inputdev->open != NULL ||
3484 tpacpi_inputdev->close != NULL);
6a38abbf 3485
e0c7dfe7 3486 TPACPI_ACPIHANDLE_INIT(hkey);
40ca9fdf 3487 mutex_init(&hotkey_mutex);
5fba344c 3488
01e88f25 3489#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
01e88f25
HMH		 3490 mutex_init(&hotkey_thread_data_mutex);
3491#endif
3492
56b6aeb0 3493 /* hotkey not supported on 570 */
d8fd94d9 3494 tp_features.hotkey = hkey_handle != NULL;
56b6aeb0 3495
56e2c200
HMH		 3496 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY,
3497 "hotkeys are %s\n",
d8fd94d9 3498 str_supported(tp_features.hotkey));
fe08bc4b 3499
9c0a76e1
HMH		 3500 if (!tp_features.hotkey)
3501 return 1;
a0416420 3502
0d922e3b
HMH		 3503 quirks = tpacpi_check_quirks(tpacpi_hotkey_qtable,
3504 ARRAY_SIZE(tpacpi_hotkey_qtable));
3505
d64c81c4
HMH		 3506 tpacpi_disable_brightness_delay();
3507
0d922e3b
HMH		 3508 /* MUST have enough space for all attributes to be added to
3509 * hotkey_dev_attributes */
3510 hotkey_dev_attributes = create_attr_set(
3511 ARRAY_SIZE(hotkey_attributes) + 2,
3512 NULL);
9c0a76e1
HMH		 3513 if (!hotkey_dev_attributes)
3514 return -ENOMEM;
3515 res = add_many_to_attr_set(hotkey_dev_attributes,
3516 hotkey_attributes,
3517 ARRAY_SIZE(hotkey_attributes));
3518 if (res)
3519 goto err_exit;
3520
0d922e3b 3521 /* mask not supported on 600e/x, 770e, 770x, A21e, A2xm/p,
9c0a76e1
HMH		 3522 A30, R30, R31, T20-22, X20-21, X22-24. Detected by checking
3523 for HKEY interface version 0x100 */
3524 if (acpi_evalf(hkey_handle, &hkeyv, "MHKV", "qd")) {
0118c2d3
DW		 3525 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY,
3526 "firmware HKEY interface version: 0x%x\n",
3527 hkeyv);
3528
3529 switch (hkeyv >> 8) {
3530 case 1:
9c0a76e1
HMH		 3531 /*
3532 * MHKV 0x100 in A31, R40, R40e,
3533 * T4x, X31, and later
3534 */
0d922e3b
HMH		 3535
3536 /* Paranoia check AND init hotkey_all_mask */
3537 if (!acpi_evalf(hkey_handle, &hotkey_all_mask,
3538 "MHKA", "qd")) {
0118c2d3
DW		 3539 pr_err("missing MHKA handler, please report this to %s\n",
3540 TPACPI_MAIL);
3541 /* Fallback: pre-init for FN+F3,F4,F12 */
3542 hotkey_all_mask = 0x080cU;
3543 } else {
3544 tp_features.hotkey_mask = 1;
3545 }
3546 break;
3547
3548 case 2:
3549 /*
3550 * MHKV 0x200 in X1, T460s, X260, T560, X1 Tablet (2016)
3551 */
3552
3553 /* Paranoia check AND init hotkey_all_mask */
3554 if (!acpi_evalf(hkey_handle, &hotkey_all_mask,
3555 "MHKA", "dd", 1)) {
3556 pr_err("missing MHKA handler, please report this to %s\n",
0d922e3b
HMH		 3557 TPACPI_MAIL);
3558 /* Fallback: pre-init for FN+F3,F4,F12 */
3559 hotkey_all_mask = 0x080cU;
3560 } else {
3561 tp_features.hotkey_mask = 1;
3562 }
0118c2d3
DW		 3563
3564 /*
3565 * Check if we have an adaptive keyboard, like on the
3566 * Lenovo Carbon X1 2014 (2nd Gen).
3567 */
3568 if (acpi_evalf(hkey_handle, &hotkey_adaptive_all_mask,
3569 "MHKA", "dd", 2)) {
3570 if (hotkey_adaptive_all_mask != 0) {
3571 tp_features.has_adaptive_kbd = true;
3572 res = sysfs_create_group(
3573 &tpacpi_pdev->dev.kobj,
3574 &adaptive_kbd_attr_group);
3575 if (res)
3576 goto err_exit;
3577 }
3578 } else {
3579 tp_features.has_adaptive_kbd = false;
3580 hotkey_adaptive_all_mask = 0x0U;
3581 }
3582 break;
3583
3584 default:
3585 pr_err("unknown version of the HKEY interface: 0x%x\n",
3586 hkeyv);
3587 pr_err("please report this to %s\n", TPACPI_MAIL);
3588 break;
1b6521dc 3589 }
9c0a76e1 3590 }
56b6aeb0 3591
56e2c200
HMH		 3592 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY,
3593 "hotkey masks are %s\n",
9c0a76e1 3594 str_supported(tp_features.hotkey_mask));
fe08bc4b 3595
0d922e3b
HMH		 3596 /* Init hotkey_all_mask if not initialized yet */
3597 if (!tp_features.hotkey_mask && !hotkey_all_mask &&
3598 (quirks & TPACPI_HK_Q_INIMASK))
3599 hotkey_all_mask = 0x080cU; /* FN+F12, FN+F4, FN+F3 */
9b010de5 3600
0d922e3b 3601 /* Init hotkey_acpi_mask and hotkey_orig_mask */
9c0a76e1 3602 if (tp_features.hotkey_mask) {
0d922e3b
HMH		 3603 /* hotkey_source_mask *must* be zero for
3604 * the first hotkey_mask_get to return hotkey_orig_mask */
9c0a76e1
HMH		 3605 res = hotkey_mask_get();
3606 if (res)
3607 goto err_exit;
3608
0d922e3b
HMH		 3609 hotkey_orig_mask = hotkey_acpi_mask;
3610 } else {
3611 hotkey_orig_mask = hotkey_all_mask;
3612 hotkey_acpi_mask = hotkey_all_mask;
9c0a76e1 3613 }
74941a69 3614
a73f3091
HMH		 3615#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
3616 if (dbg_wlswemul) {
3617 tp_features.hotkey_wlsw = 1;
d89a727a 3618 radiosw_state = !!tpacpi_wlsw_emulstate;
0978e012 3619 pr_info("radio switch emulation enabled\n");
a73f3091
HMH		 3620 } else
3621#endif
9c0a76e1
HMH		 3622 /* Not all thinkpads have a hardware radio switch */
3623 if (acpi_evalf(hkey_handle, &status, "WLSW", "qd")) {
3624 tp_features.hotkey_wlsw = 1;
d89a727a 3625 radiosw_state = !!status;
0978e012 3626 pr_info("radio switch found; radios are %s\n",
9c0a76e1 3627 enabled(status, 0));
3a872080
HMH		 3628 }
3629 if (tp_features.hotkey_wlsw)
9c0a76e1
HMH		 3630 res = add_to_attr_set(hotkey_dev_attributes,
3631 &dev_attr_hotkey_radio_sw.attr);
74941a69 3632
b3180028
L		 3633 res = hotkey_init_tablet_mode();
3634 if (res < 0)
3635 goto err_exit;
3636
3637 tabletsw_state = res;
6c231bd5 3638
b3180028
L		 3639 res = register_attr_set_with_sysfs(hotkey_dev_attributes,
3640 &tpacpi_pdev->dev.kobj);
9c0a76e1
HMH		 3641 if (res)
3642 goto err_exit;
6a38abbf 3643
9c0a76e1 3644 /* Set up key map */
9c0a76e1
HMH		 3645 hotkey_keycode_map = kmalloc(TPACPI_HOTKEY_MAP_SIZE,
3646 GFP_KERNEL);
3647 if (!hotkey_keycode_map) {
0978e012 3648 pr_err("failed to allocate memory for key map\n");
9c0a76e1
HMH		 3649 res = -ENOMEM;
3650 goto err_exit;
3651 }
edf0e0e5 3652
d1e14dca
HMH		 3653 keymap_id = tpacpi_check_quirks(tpacpi_keymap_qtable,
3654 ARRAY_SIZE(tpacpi_keymap_qtable));
3655 BUG_ON(keymap_id >= ARRAY_SIZE(tpacpi_keymaps));
3656 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY,
3657 "using keymap number %lu\n", keymap_id);
3658
3659 memcpy(hotkey_keycode_map, &tpacpi_keymaps[keymap_id],
3660 TPACPI_HOTKEY_MAP_SIZE);
edf0e0e5 3661
792979c8 3662 input_set_capability(tpacpi_inputdev, EV_MSC, MSC_SCAN);
9c0a76e1
HMH		 3663 tpacpi_inputdev->keycodesize = TPACPI_HOTKEY_MAP_TYPESIZE;
3664 tpacpi_inputdev->keycodemax = TPACPI_HOTKEY_MAP_LEN;
3665 tpacpi_inputdev->keycode = hotkey_keycode_map;
3666 for (i = 0; i < TPACPI_HOTKEY_MAP_LEN; i++) {
3667 if (hotkey_keycode_map[i] != KEY_RESERVED) {
792979c8
HMH		 3668 input_set_capability(tpacpi_inputdev, EV_KEY,
3669 hotkey_keycode_map[i]);
9c0a76e1
HMH		 3670 } else {
3671 if (i < sizeof(hotkey_reserved_mask)*8)
3672 hotkey_reserved_mask |= 1 << i;
6a38abbf 3673 }
9c0a76e1 3674 }
6a38abbf 3675
9c0a76e1 3676 if (tp_features.hotkey_wlsw) {
792979c8 3677 input_set_capability(tpacpi_inputdev, EV_SW, SW_RFKILL_ALL);
d89a727a
HMH		 3678 input_report_switch(tpacpi_inputdev,
3679 SW_RFKILL_ALL, radiosw_state);
9c0a76e1
HMH		 3680 }
3681 if (tp_features.hotkey_tablet) {
792979c8 3682 input_set_capability(tpacpi_inputdev, EV_SW, SW_TABLET_MODE);
d89a727a
HMH		 3683 input_report_switch(tpacpi_inputdev,
3684 SW_TABLET_MODE, tabletsw_state);
9c0a76e1 3685 }
5c29d58f 3686
9c0a76e1 3687 /* Do not issue duplicate brightness change events to
77775838
HMH		 3688 * userspace. tpacpi_detect_brightness_capabilities() must have
3689 * been called before this point */
b33c6ce5 3690 if (acpi_video_get_backlight_type() != acpi_backlight_vendor) {
5cac62ac
AS		 3691 pr_info("This ThinkPad has standard ACPI backlight brightness control, supported by the ACPI video driver\n");
3692 pr_notice("Disabling thinkpad-acpi brightness events by default...\n");
9c0a76e1 3693
de4c8cc7
HMH		 3694 /* Disable brightness up/down on Lenovo thinkpads when
3695 * ACPI is handling them, otherwise it is plain impossible
3696 * for userspace to do something even remotely sane */
9c0a76e1
HMH		 3697 hotkey_reserved_mask |=
3698 (1 << TP_ACPI_HOTKEYSCAN_FNHOME)
3699 | (1 << TP_ACPI_HOTKEYSCAN_FNEND);
de4c8cc7
HMH		 3700 hotkey_unmap(TP_ACPI_HOTKEYSCAN_FNHOME);
3701 hotkey_unmap(TP_ACPI_HOTKEYSCAN_FNEND);
9c0a76e1 3702 }
ff80f137 3703
230d8cf2 3704#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
0d922e3b
HMH		 3705 hotkey_source_mask = TPACPI_HKEY_NVRAM_GOOD_MASK
3706 & ~hotkey_all_mask
3707 & ~hotkey_reserved_mask;
230d8cf2
HMH		 3708
3709 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY,
3710 "hotkey source mask 0x%08x, polling freq %u\n",
3711 hotkey_source_mask, hotkey_poll_freq);
3712#endif
3713
56e2c200
HMH		 3714 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY,
3715 "enabling firmware HKEY event interface...\n");
2586d566 3716 res = hotkey_status_set(true);
9c0a76e1
HMH		 3717 if (res) {
3718 hotkey_exit();
3719 return res;
3720 }
0d922e3b
HMH		 3721 res = hotkey_mask_set(((hotkey_all_mask & ~hotkey_reserved_mask)
3722 | hotkey_driver_mask)
3723 & ~hotkey_source_mask);
9c0a76e1
HMH		 3724 if (res < 0 && res != -ENXIO) {
3725 hotkey_exit();
3726 return res;
3727 }
0d922e3b
HMH		 3728 hotkey_user_mask = (hotkey_acpi_mask | hotkey_source_mask)
3729 & ~hotkey_reserved_mask;
3730 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY,
3731 "initial masks: user=0x%08x, fw=0x%08x, poll=0x%08x\n",
3732 hotkey_user_mask, hotkey_acpi_mask, hotkey_source_mask);
01e88f25 3733
9c0a76e1
HMH		 3734 tpacpi_inputdev->open = &hotkey_inputdev_open;
3735 tpacpi_inputdev->close = &hotkey_inputdev_close;
56b6aeb0 3736
db25f16d 3737 hotkey_poll_setup_safe(true);
56b6aeb0 3738
9c0a76e1 3739 return 0;
01e88f25 3740
9c0a76e1
HMH		 3741err_exit:
3742 delete_attr_set(hotkey_dev_attributes, &tpacpi_pdev->dev.kobj);
b790ceeb
BN		 3743 sysfs_remove_group(&tpacpi_pdev->dev.kobj,
3744 &adaptive_kbd_attr_group);
3745
9c0a76e1 3746 hotkey_dev_attributes = NULL;
a0416420 3747
72a979f0 3748 return (res < 0) ? res : 1;
56b6aeb0
HMH		 3749}
3750
3a9d20bd
SS		 3751/* Thinkpad X1 Carbon support 5 modes including Home mode, Web browser
3752 * mode, Web conference mode, Function mode and Lay-flat mode.
3753 * We support Home mode and Function mode currently.
3754 *
3755 * Will consider support rest of modes in future.
3756 *
3757 */
b201a47f 3758static const int adaptive_keyboard_modes[] = {
3a9d20bd
SS		 3759 HOME_MODE,
3760/* WEB_BROWSER_MODE = 2,
3761 WEB_CONFERENCE_MODE = 3, */
3762 FUNCTION_MODE
3763};
3764
3765#define DFR_CHANGE_ROW 0x101
3766#define DFR_SHOW_QUICKVIEW_ROW 0x102
6a68d855 3767#define FIRST_ADAPTIVE_KEY 0x103
3a9d20bd
SS		 3768
3769/* press Fn key a while second, it will switch to Function Mode. Then
3770 * release Fn key, previous mode be restored.
3771 */
3772static bool adaptive_keyboard_mode_is_saved;
3773static int adaptive_keyboard_prev_mode;
3774
f74587fb
BN		 3775static int adaptive_keyboard_get_mode(void)
3776{
3777 int mode = 0;
3778
3779 if (!acpi_evalf(hkey_handle, &mode, "GTRW", "dd", 0)) {
3780 pr_err("Cannot read adaptive keyboard mode\n");
3781 return -EIO;
3782 }
3783
3784 return mode;
3785}
3786
3787static int adaptive_keyboard_set_mode(int new_mode)
3788{
3789 if (new_mode < 0 ||
3790 new_mode > LAYFLAT_MODE)
3791 return -EINVAL;
3792
3793 if (!acpi_evalf(hkey_handle, NULL, "STRW", "vd", new_mode)) {
3794 pr_err("Cannot set adaptive keyboard mode\n");
3795 return -EIO;
3796 }
3797
3798 return 0;
3799}
3800
3a9d20bd
SS		 3801static int adaptive_keyboard_get_next_mode(int mode)
3802{
3803 size_t i;
3804 size_t max_mode = ARRAY_SIZE(adaptive_keyboard_modes) - 1;
3805
3806 for (i = 0; i <= max_mode; i++) {
3807 if (adaptive_keyboard_modes[i] == mode)
3808 break;
3809 }
3810
3811 if (i >= max_mode)
3812 i = 0;
3813 else
3814 i++;
3815
3816 return adaptive_keyboard_modes[i];
3817}
3818
3819static bool adaptive_keyboard_hotkey_notify_hotkey(unsigned int scancode)
3820{
abf9dc0d 3821 int current_mode = 0;
3a9d20bd 3822 int new_mode = 0;
6a68d855 3823 int keycode;
3a9d20bd
SS		 3824
3825 switch (scancode) {
3826 case DFR_CHANGE_ROW:
3827 if (adaptive_keyboard_mode_is_saved) {
3828 new_mode = adaptive_keyboard_prev_mode;
3829 adaptive_keyboard_mode_is_saved = false;
3830 } else {
f74587fb
BN		 3831 current_mode = adaptive_keyboard_get_mode();
3832 if (current_mode < 0)
3a9d20bd 3833 return false;
f74587fb
BN		 3834 new_mode = adaptive_keyboard_get_next_mode(
3835 current_mode);
3a9d20bd
SS		 3836 }
3837
f74587fb 3838 if (adaptive_keyboard_set_mode(new_mode) < 0)
3a9d20bd 3839 return false;
3a9d20bd
SS		 3840
3841 return true;
3842
3843 case DFR_SHOW_QUICKVIEW_ROW:
f74587fb
BN		 3844 current_mode = adaptive_keyboard_get_mode();
3845 if (current_mode < 0)
3a9d20bd 3846 return false;
3a9d20bd 3847
f74587fb
BN		 3848 adaptive_keyboard_prev_mode = current_mode;
3849 adaptive_keyboard_mode_is_saved = true;
3850
3851 if (adaptive_keyboard_set_mode (FUNCTION_MODE) < 0)
3852 return false;
3a9d20bd
SS		 3853 return true;
3854
3855 default:
741d98c7 3856 if (scancode < FIRST_ADAPTIVE_KEY ||
696c6523
CK		 3857 scancode >= FIRST_ADAPTIVE_KEY +
3858 TP_ACPI_HOTKEYSCAN_EXTENDED_START -
3859 TP_ACPI_HOTKEYSCAN_ADAPTIVE_START) {
6a68d855 3860 pr_info("Unhandled adaptive keyboard key: 0x%x\n",
5cac62ac 3861 scancode);
6a68d855
BN		 3862 return false;
3863 }
149c8c75
CK		 3864 keycode = hotkey_keycode_map[scancode - FIRST_ADAPTIVE_KEY +
3865 TP_ACPI_HOTKEYSCAN_ADAPTIVE_START];
6a68d855
BN		 3866 if (keycode != KEY_RESERVED) {
3867 mutex_lock(&tpacpi_inputdev_send_mutex);
3868
3869 input_report_key(tpacpi_inputdev, keycode, 1);
3870 input_sync(tpacpi_inputdev);
3871
3872 input_report_key(tpacpi_inputdev, keycode, 0);
3873 input_sync(tpacpi_inputdev);
3874
3875 mutex_unlock(&tpacpi_inputdev_send_mutex);
3876 }
3877 return true;
3a9d20bd
SS		 3878 }
3879}
3880
3827e7a3
HMH		 3881static bool hotkey_notify_hotkey(const u32 hkey,
3882 bool *send_acpi_ev,
3883 bool *ignore_acpi_ev)
3884{
3885 /* 0x1000-0x1FFF: key presses */
3886 unsigned int scancode = hkey & 0xfff;
3887 *send_acpi_ev = true;
3888 *ignore_acpi_ev = false;
3889
696c6523
CK		 3890 /*
3891 * Original events are in the 0x10XX range, the adaptive keyboard
3892 * found in 2014 X1 Carbon emits events are of 0x11XX. In 2017
3893 * models, additional keys are emitted through 0x13XX.
3894 */
3895 switch ((hkey >> 8) & 0xf) {
3896 case 0:
3897 if (scancode > 0 &&
3898 scancode <= TP_ACPI_HOTKEYSCAN_ADAPTIVE_START) {
3899 /* HKEY event 0x1001 is scancode 0x00 */
3900 scancode--;
3901 if (!(hotkey_source_mask & (1 << scancode))) {
3902 tpacpi_input_send_key_masked(scancode);
3903 *send_acpi_ev = false;
3904 } else {
3905 *ignore_acpi_ev = true;
3906 }
3907 return true;
3827e7a3 3908 }
696c6523
CK		 3909 break;
3910
3911 case 1:
3a9d20bd 3912 return adaptive_keyboard_hotkey_notify_hotkey(scancode);
696c6523
CK		 3913
3914 case 3:
3915 /* Extended keycodes start at 0x300 and our offset into the map
3916 * TP_ACPI_HOTKEYSCAN_EXTENDED_START. The calculated scancode
3917 * will be positive, but might not be in the correct range.
3918 */
3919 scancode -= (0x300 - TP_ACPI_HOTKEYSCAN_EXTENDED_START);
3920 if (scancode >= TP_ACPI_HOTKEYSCAN_EXTENDED_START &&
3921 scancode < TPACPI_HOTKEY_MAP_LEN) {
3922 tpacpi_input_send_key(scancode);
3923 return true;
3924 }
3925 break;
3827e7a3 3926 }
696c6523 3927
3827e7a3
HMH		 3928 return false;
3929}
3930
3931static bool hotkey_notify_wakeup(const u32 hkey,
3932 bool *send_acpi_ev,
3933 bool *ignore_acpi_ev)
3934{
3935 /* 0x2000-0x2FFF: Wakeup reason */
3936 *send_acpi_ev = true;
3937 *ignore_acpi_ev = false;
3938
3939 switch (hkey) {
67bcae6e
HMH		 3940 case TP_HKEY_EV_WKUP_S3_UNDOCK: /* suspend, undock */
3941 case TP_HKEY_EV_WKUP_S4_UNDOCK: /* hibernation, undock */
3827e7a3
HMH		 3942 hotkey_wakeup_reason = TP_ACPI_WAKEUP_UNDOCK;
3943 *ignore_acpi_ev = true;
3944 break;
3945
67bcae6e
HMH		 3946 case TP_HKEY_EV_WKUP_S3_BAYEJ: /* suspend, bay eject */
3947 case TP_HKEY_EV_WKUP_S4_BAYEJ: /* hibernation, bay eject */
3827e7a3
HMH		 3948 hotkey_wakeup_reason = TP_ACPI_WAKEUP_BAYEJ;
3949 *ignore_acpi_ev = true;
3950 break;
3951
67bcae6e
HMH		 3952 case TP_HKEY_EV_WKUP_S3_BATLOW: /* Battery on critical low level/S3 */
3953 case TP_HKEY_EV_WKUP_S4_BATLOW: /* Battery on critical low level/S4 */
0978e012 3954 pr_alert("EMERGENCY WAKEUP: battery almost empty\n");
106b4e66
HMH		 3955 /* how to auto-heal: */
3956 /* 2313: woke up from S3, go to S4/S5 */
3957 /* 2413: woke up from S4, go to S5 */
3958 break;
3959
3827e7a3
HMH		 3960 default:
3961 return false;
3962 }
3963
3964 if (hotkey_wakeup_reason != TP_ACPI_WAKEUP_NONE) {
0978e012 3965 pr_info("woke up due to a hot-unplug request...\n");
3827e7a3
HMH		 3966 hotkey_wakeup_reason_notify_change();
3967 }
3968 return true;
3969}
3970
a50245af
HMH		 3971static bool hotkey_notify_dockevent(const u32 hkey,
3972 bool *send_acpi_ev,
3973 bool *ignore_acpi_ev)
3974{
3975 /* 0x4000-0x4FFF: dock-related events */
3976 *send_acpi_ev = true;
3977 *ignore_acpi_ev = false;
3978
3979 switch (hkey) {
3980 case TP_HKEY_EV_UNDOCK_ACK:
3981 /* ACPI undock operation completed after wakeup */
3982 hotkey_autosleep_ack = 1;
3983 pr_info("undocked\n");
3984 hotkey_wakeup_hotunplug_complete_notify_change();
3985 return true;
3986
3987 case TP_HKEY_EV_HOTPLUG_DOCK: /* docked to port replicator */
3988 pr_info("docked into hotplug port replicator\n");
3989 return true;
3990 case TP_HKEY_EV_HOTPLUG_UNDOCK: /* undocked from port replicator */
3991 pr_info("undocked from hotplug port replicator\n");
3992 return true;
3993
3994 default:
3995 return false;
3996 }
3997}
3998
3827e7a3
HMH		 3999static bool hotkey_notify_usrevent(const u32 hkey,
4000 bool *send_acpi_ev,
4001 bool *ignore_acpi_ev)
4002{
4003 /* 0x5000-0x5FFF: human interface helpers */
4004 *send_acpi_ev = true;
4005 *ignore_acpi_ev = false;
4006
4007 switch (hkey) {
67bcae6e
HMH		 4008 case TP_HKEY_EV_PEN_INSERTED: /* X61t: tablet pen inserted into bay */
4009 case TP_HKEY_EV_PEN_REMOVED: /* X61t: tablet pen removed from bay */
3827e7a3
HMH		 4010 return true;
4011
67bcae6e
HMH		 4012 case TP_HKEY_EV_TABLET_TABLET: /* X41t-X61t: tablet mode */
4013 case TP_HKEY_EV_TABLET_NOTEBOOK: /* X41t-X61t: normal mode */
3827e7a3
HMH		 4014 tpacpi_input_send_tabletsw();
4015 hotkey_tablet_mode_notify_change();
4016 *send_acpi_ev = false;
4017 return true;
4018
67bcae6e
HMH		 4019 case TP_HKEY_EV_LID_CLOSE: /* Lid closed */
4020 case TP_HKEY_EV_LID_OPEN: /* Lid opened */
4021 case TP_HKEY_EV_BRGHT_CHANGED: /* brightness changed */
176dd985 4022 /* do not propagate these events */
3827e7a3
HMH		 4023 *ignore_acpi_ev = true;
4024 return true;
4025
4026 default:
4027 return false;
4028 }
4029}
4030
9ebd9e83
HMH		 4031static void thermal_dump_all_sensors(void);
4032
2d43f671 4033static bool hotkey_notify_6xxx(const u32 hkey,
106b4e66
HMH		 4034 bool *send_acpi_ev,
4035 bool *ignore_acpi_ev)
4036{
9ebd9e83
HMH		 4037 bool known = true;
4038
2d43f671 4039 /* 0x6000-0x6FFF: thermal alarms/notices and keyboard events */
106b4e66
HMH		 4040 *send_acpi_ev = true;
4041 *ignore_acpi_ev = false;
4042
4043 switch (hkey) {
9ebd9e83 4044 case TP_HKEY_EV_THM_TABLE_CHANGED:
0978e012 4045 pr_info("EC reports that Thermal Table has changed\n");
9ebd9e83
HMH		 4046 /* recommended action: do nothing, we don't have
4047 * Lenovo ATM information */
4048 return true;
67bcae6e 4049 case TP_HKEY_EV_ALARM_BAT_HOT:
0978e012 4050 pr_crit("THERMAL ALARM: battery is too hot!\n");
106b4e66 4051 /* recommended action: warn user through gui */
9ebd9e83 4052 break;
67bcae6e 4053 case TP_HKEY_EV_ALARM_BAT_XHOT:
0978e012 4054 pr_alert("THERMAL EMERGENCY: battery is extremely hot!\n");
106b4e66 4055 /* recommended action: immediate sleep/hibernate */
9ebd9e83 4056 break;
67bcae6e 4057 case TP_HKEY_EV_ALARM_SENSOR_HOT:
5cac62ac 4058 pr_crit("THERMAL ALARM: a sensor reports something is too hot!\n");
106b4e66
HMH		 4059 /* recommended action: warn user through gui, that */
4060 /* some internal component is too hot */
9ebd9e83 4061 break;
67bcae6e 4062 case TP_HKEY_EV_ALARM_SENSOR_XHOT:
5cac62ac 4063 pr_alert("THERMAL EMERGENCY: a sensor reports something is extremely hot!\n");
106b4e66 4064 /* recommended action: immediate sleep/hibernate */
9ebd9e83 4065 break;
6f62bc3e
RH		 4066 case TP_HKEY_EV_AC_CHANGED:
4067 /* X120e, X121e, X220, X220i, X220t, X230, T420, T420s, W520:
4068 * AC status changed; can be triggered by plugging or
4069 * unplugging AC adapter, docking or undocking. */
4070
4071 /* fallthrough */
2d43f671
HMH		 4072
4073 case TP_HKEY_EV_KEY_NUMLOCK:
4074 case TP_HKEY_EV_KEY_FN:
67ab6248 4075 case TP_HKEY_EV_KEY_FN_ESC:
2d43f671
HMH		 4076 /* key press events, we just ignore them as long as the EC
4077 * is still reporting them in the normal keyboard stream */
4078 *send_acpi_ev = false;
4079 *ignore_acpi_ev = true;
4080 return true;
4081
b03f4d49
L		 4082 case TP_HKEY_EV_TABLET_CHANGED:
4083 tpacpi_input_send_tabletsw();
4084 hotkey_tablet_mode_notify_change();
4085 *send_acpi_ev = false;
4086 break;
4087
587d8628
DH		 4088 case TP_HKEY_EV_PALM_DETECTED:
4089 case TP_HKEY_EV_PALM_UNDETECTED:
4090 /* palm detected hovering the keyboard, forward to user-space
4091 * via netlink for consumption */
4092 return true;
4093
106b4e66 4094 default:
2d43f671 4095 pr_warn("unknown possible thermal alarm or keyboard event received\n");
9ebd9e83 4096 known = false;
106b4e66 4097 }
9ebd9e83
HMH		 4098
4099 thermal_dump_all_sensors();
4100
4101 return known;
106b4e66
HMH		 4102}
4103
56b6aeb0
HMH		 4104static void hotkey_notify(struct ibm_struct *ibm, u32 event)
4105{
6a38abbf 4106 u32 hkey;
3827e7a3
HMH		 4107 bool send_acpi_ev;
4108 bool ignore_acpi_ev;
4109 bool known_ev;
3eea123d
HMH		 4110
4111 if (event != 0x80) {
0978e012 4112 pr_err("unknown HKEY notification event %d\n", event);
3eea123d 4113 /* forward it to userspace, maybe it knows how to handle it */
35ff8b9f
HMH		 4114 acpi_bus_generate_netlink_event(
4115 ibm->acpi->device->pnp.device_class,
e0b36fc5 4116 dev_name(&ibm->acpi->device->dev),
35ff8b9f 4117 event, 0);
3eea123d
HMH		 4118 return;
4119 }
4120
4121 while (1) {
4122 if (!acpi_evalf(hkey_handle, &hkey, "MHKP", "d")) {
0978e012 4123 pr_err("failed to retrieve HKEY event\n");
3eea123d
HMH		 4124 return;
4125 }
4126
4127 if (hkey == 0) {
4128 /* queue empty */
4129 return;
4130 }
4131
3827e7a3
HMH		 4132 send_acpi_ev = true;
4133 ignore_acpi_ev = false;
56b6aeb0 4134
ff80f137
HMH		 4135 switch (hkey >> 12) {
4136 case 1:
4137 /* 0x1000-0x1FFF: key presses */
3827e7a3
HMH		 4138 known_ev = hotkey_notify_hotkey(hkey, &send_acpi_ev,
4139 &ignore_acpi_ev);
ff80f137 4140 break;
a713b4d7 4141 case 2:
3827e7a3
HMH		 4142 /* 0x2000-0x2FFF: Wakeup reason */
4143 known_ev = hotkey_notify_wakeup(hkey, &send_acpi_ev,
4144 &ignore_acpi_ev);
a713b4d7
HMH		 4145 break;
4146 case 3:
3827e7a3 4147 /* 0x3000-0x3FFF: bay-related wakeups */
bf8b29c8
HMH		 4148 switch (hkey) {
4149 case TP_HKEY_EV_BAYEJ_ACK:
a713b4d7 4150 hotkey_autosleep_ack = 1;
0978e012 4151 pr_info("bay ejected\n");
50ebec09 4152 hotkey_wakeup_hotunplug_complete_notify_change();
3827e7a3 4153 known_ev = true;
bf8b29c8
HMH		 4154 break;
4155 case TP_HKEY_EV_OPTDRV_EJ:
4156 /* FIXME: kick libata if SATA link offline */
4157 known_ev = true;
4158 break;
4159 default:
3827e7a3 4160 known_ev = false;
a713b4d7
HMH		 4161 }
4162 break;
4163 case 4:
a50245af
HMH		 4164 /* 0x4000-0x4FFF: dock-related events */
4165 known_ev = hotkey_notify_dockevent(hkey, &send_acpi_ev,
4166 &ignore_acpi_ev);
a713b4d7 4167 break;
ff80f137 4168 case 5:
d1edb2b5 4169 /* 0x5000-0x5FFF: human interface helpers */
3827e7a3
HMH		 4170 known_ev = hotkey_notify_usrevent(hkey, &send_acpi_ev,
4171 &ignore_acpi_ev);
ff80f137 4172 break;
106b4e66 4173 case 6:
2d43f671
HMH		 4174 /* 0x6000-0x6FFF: thermal alarms/notices and
4175 * keyboard events */
4176 known_ev = hotkey_notify_6xxx(hkey, &send_acpi_ev,
106b4e66
HMH		 4177 &ignore_acpi_ev);
4178 break;
ff80f137
HMH		 4179 case 7:
4180 /* 0x7000-0x7FFF: misc */
67bcae6e
HMH		 4181 if (tp_features.hotkey_wlsw &&
4182 hkey == TP_HKEY_EV_RFKILL_CHANGED) {
733e27c1 4183 tpacpi_send_radiosw_update();
3b64b51d 4184 send_acpi_ev = 0;
3827e7a3 4185 known_ev = true;
6a38abbf 4186 break;
6a38abbf 4187 }
ff80f137
HMH		 4188 /* fallthrough to default */
4189 default:
3827e7a3 4190 known_ev = false;
3b64b51d 4191 }
3827e7a3 4192 if (!known_ev) {
0978e012 4193 pr_notice("unhandled HKEY event 0x%04x\n", hkey);
5cac62ac
AS		 4194 pr_notice("please report the conditions when this event happened to %s\n",
4195 TPACPI_MAIL);
6a38abbf 4196 }
ff80f137 4197
3eea123d 4198 /* netlink events */
3e5ce914 4199 if (!ignore_acpi_ev && send_acpi_ev) {
35ff8b9f
HMH		 4200 acpi_bus_generate_netlink_event(
4201 ibm->acpi->device->pnp.device_class,
e0b36fc5 4202 dev_name(&ibm->acpi->device->dev),
35ff8b9f 4203 event, hkey);
3eea123d 4204 }
56b6aeb0
HMH		 4205 }
4206}
4207
fd3c3a42 4208static void hotkey_suspend(void)
a713b4d7
HMH		 4209{
4210 /* Do these on suspend, we get the events on early resume! */
4211 hotkey_wakeup_reason = TP_ACPI_WAKEUP_NONE;
4212 hotkey_autosleep_ack = 0;
330947b8
SS		 4213
4214 /* save previous mode of adaptive keyboard of X1 Carbon */
f23a5bcb
BN		 4215 if (tp_features.has_adaptive_kbd) {
4216 if (!acpi_evalf(hkey_handle, &adaptive_keyboard_prev_mode,
4217 "GTRW", "dd", 0)) {
4218 pr_err("Cannot read adaptive keyboard mode.\n");
330947b8
SS		 4219 }
4220 }
a713b4d7
HMH		 4221}
4222
5c29d58f
HMH		 4223static void hotkey_resume(void)
4224{
d64c81c4
HMH		 4225 tpacpi_disable_brightness_delay();
4226
0d922e3b
HMH		 4227 if (hotkey_status_set(true) < 0 ||
4228 hotkey_mask_set(hotkey_acpi_mask) < 0)
5cac62ac 4229 pr_err("error while attempting to reset the event firmware interface\n");
0d922e3b 4230
733e27c1 4231 tpacpi_send_radiosw_update();
6c231bd5 4232 hotkey_tablet_mode_notify_change();
50ebec09
HMH		 4233 hotkey_wakeup_reason_notify_change();
4234 hotkey_wakeup_hotunplug_complete_notify_change();
db25f16d 4235 hotkey_poll_setup_safe(false);
330947b8
SS		 4236
4237 /* restore previous mode of adapive keyboard of X1 Carbon */
f23a5bcb
BN		 4238 if (tp_features.has_adaptive_kbd) {
4239 if (!acpi_evalf(hkey_handle, NULL, "STRW", "vd",
4240 adaptive_keyboard_prev_mode)) {
4241 pr_err("Cannot set adaptive keyboard mode.\n");
330947b8
SS		 4242 }
4243 }
5c29d58f
HMH		 4244}
4245
a0416420 4246/* procfs -------------------------------------------------------------- */
887965e6 4247static int hotkey_read(struct seq_file *m)
1da177e4 4248{
ae92bd17 4249 int res, status;
1da177e4 4250
d8fd94d9 4251 if (!tp_features.hotkey) {
887965e6
AD		 4252 seq_printf(m, "status:\t\tnot supported\n");
4253 return 0;
78f81cc4
BD		 4254 }
4255
7646ea88 4256 if (mutex_lock_killable(&hotkey_mutex))
fc589a3c 4257 return -ERESTARTSYS;
b2c985e7
HMH		 4258 res = hotkey_status_get(&status);
4259 if (!res)
4260 res = hotkey_mask_get();
40ca9fdf 4261 mutex_unlock(&hotkey_mutex);
b86c4722
HMH		 4262 if (res)
4263 return res;
1da177e4 4264
887965e6 4265 seq_printf(m, "status:\t\t%s\n", enabled(status, 0));
0d922e3b 4266 if (hotkey_all_mask) {
887965e6
AD		 4267 seq_printf(m, "mask:\t\t0x%08x\n", hotkey_user_mask);
4268 seq_printf(m, "commands:\tenable, disable, reset, <mask>\n");
1da177e4 4269 } else {
887965e6
AD		 4270 seq_printf(m, "mask:\t\tnot supported\n");
4271 seq_printf(m, "commands:\tenable, disable, reset\n");
1da177e4
LT		 4272 }
4273
887965e6 4274 return 0;
1da177e4
LT		 4275}
4276
406e988b 4277static void hotkey_enabledisable_warn(bool enable)
2586d566
HMH		 4278{
4279 tpacpi_log_usertask("procfs hotkey enable/disable");
406e988b 4280 if (!WARN((tpacpi_lifecycle == TPACPI_LIFE_RUNNING || !enable),
5cac62ac
AS		 4281 pr_fmt("hotkey enable/disable functionality has been removed from the driver. Hotkeys are always enabled.\n")))
4282 pr_err("Please remove the hotkey=enable module parameter, it is deprecated. Hotkeys are always enabled.\n");
2586d566
HMH		 4283}
4284
78f81cc4 4285static int hotkey_write(char *buf)
1da177e4 4286{
2586d566 4287 int res;
ae92bd17 4288 u32 mask;
1da177e4 4289 char *cmd;
1da177e4 4290
d8fd94d9 4291 if (!tp_features.hotkey)
1da177e4
LT		 4292 return -ENODEV;
4293
7646ea88 4294 if (mutex_lock_killable(&hotkey_mutex))
fc589a3c 4295 return -ERESTARTSYS;
40ca9fdf 4296
0d922e3b 4297 mask = hotkey_user_mask;
78f81cc4 4298
40ca9fdf 4299 res = 0;
1da177e4
LT		 4300 while ((cmd = next_cmd(&buf))) {
4301 if (strlencmp(cmd, "enable") == 0) {
406e988b 4302 hotkey_enabledisable_warn(1);
1da177e4 4303 } else if (strlencmp(cmd, "disable") == 0) {
406e988b 4304 hotkey_enabledisable_warn(0);
2586d566 4305 res = -EPERM;
1da177e4 4306 } else if (strlencmp(cmd, "reset") == 0) {
20c9aa46
HMH		 4307 mask = (hotkey_all_mask | hotkey_source_mask)
4308 & ~hotkey_reserved_mask;
1da177e4
LT		 4309 } else if (sscanf(cmd, "0x%x", &mask) == 1) {
4310 /* mask set */
4311 } else if (sscanf(cmd, "%x", &mask) == 1) {
4312 /* mask set */
40ca9fdf
HMH		 4313 } else {
4314 res = -EINVAL;
4315 goto errexit;
4316 }
1da177e4 4317 }
56e2c200 4318
0d922e3b 4319 if (!res) {
56e2c200
HMH		 4320 tpacpi_disclose_usertask("procfs hotkey",
4321 "set mask to 0x%08x\n", mask);
0d922e3b
HMH		 4322 res = hotkey_user_mask_set(mask);
4323 }
1da177e4 4324
40ca9fdf
HMH		 4325errexit:
4326 mutex_unlock(&hotkey_mutex);
4327 return res;
78f81cc4 4328}
1da177e4 4329
1ba90e3a 4330static const struct acpi_device_id ibm_htk_device_ids[] = {
9fbdaeb4
MI		 4331 {TPACPI_ACPI_IBM_HKEY_HID, 0},
4332 {TPACPI_ACPI_LENOVO_HKEY_HID, 0},
a3c42a46 4333 {TPACPI_ACPI_LENOVO_HKEY_V2_HID, 0},
1ba90e3a
TR		 4334 {"", 0},
4335};
4336
8d376cd6 4337static struct tp_acpi_drv_struct ibm_hotkey_acpidriver = {
1ba90e3a 4338 .hid = ibm_htk_device_ids,
8d376cd6
HMH		 4339 .notify = hotkey_notify,
4340 .handle = &hkey_handle,
4341 .type = ACPI_DEVICE_NOTIFY,
4342};
4343
a5763f22
HMH		 4344static struct ibm_struct hotkey_driver_data = {
4345 .name = "hotkey",
a5763f22
HMH		 4346 .read = hotkey_read,
4347 .write = hotkey_write,
4348 .exit = hotkey_exit,
5c29d58f 4349 .resume = hotkey_resume,
a713b4d7 4350 .suspend = hotkey_suspend,
8d376cd6 4351 .acpi = &ibm_hotkey_acpidriver,
a5763f22
HMH		 4352};
4353
56b6aeb0
HMH		 4354/*************************************************************************
4355 * Bluetooth subdriver
4356 */
1da177e4 4357
f74a27d4
HMH		 4358enum {
4359 /* ACPI GBDC/SBDC bits */
4360 TP_ACPI_BLUETOOTH_HWPRESENT = 0x01, /* Bluetooth hw available */
4361 TP_ACPI_BLUETOOTH_RADIOSSW = 0x02, /* Bluetooth radio enabled */
153f8220 4362 TP_ACPI_BLUETOOTH_RESUMECTRL = 0x04, /* Bluetooth state at resume:
08fedfc9 4363 0 = disable, 1 = enable */
153f8220
HMH		 4364};
4365
4366enum {
4367 /* ACPI \BLTH commands */
4368 TP_ACPI_BLTH_GET_ULTRAPORT_ID = 0x00, /* Get Ultraport BT ID */
4369 TP_ACPI_BLTH_GET_PWR_ON_RESUME = 0x01, /* Get power-on-resume state */
4370 TP_ACPI_BLTH_PWR_ON_ON_RESUME = 0x02, /* Resume powered on */
4371 TP_ACPI_BLTH_PWR_OFF_ON_RESUME = 0x03, /* Resume powered off */
4372 TP_ACPI_BLTH_SAVE_STATE = 0x05, /* Save state for S4/S5 */
f74a27d4
HMH		 4373};
4374
bee4cd9b
HMH		 4375#define TPACPI_RFK_BLUETOOTH_SW_NAME "tpacpi_bluetooth_sw"
4376
19d337df 4377static int bluetooth_get_status(void)
07431ec8
HMH		 4378{
4379 int status;
4380
a73f3091
HMH		 4381#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
4382 if (dbg_bluetoothemul)
4383 return (tpacpi_bluetooth_emulstate) ?
19d337df 4384 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF;
a73f3091
HMH		 4385#endif
4386
07431ec8
HMH		 4387 if (!acpi_evalf(hkey_handle, &status, "GBDC", "d"))
4388 return -EIO;
4389
0e74dc26 4390 return ((status & TP_ACPI_BLUETOOTH_RADIOSSW) != 0) ?
19d337df 4391 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF;
07431ec8
HMH		 4392}
4393
19d337df 4394static int bluetooth_set_status(enum tpacpi_rfkill_state state)
0e74dc26
HMH		 4395{
4396 int status;
4397
bee4cd9b 4398 vdbg_printk(TPACPI_DBG_RFKILL,
19d337df
JB		 4399 "will attempt to %s bluetooth\n",
4400 (state == TPACPI_RFK_RADIO_ON) ? "enable" : "disable");
bee4cd9b 4401
a73f3091
HMH		 4402#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
4403 if (dbg_bluetoothemul) {
19d337df 4404 tpacpi_bluetooth_emulstate = (state == TPACPI_RFK_RADIO_ON);
a73f3091
HMH		 4405 return 0;
4406 }
4407#endif
4408
19d337df 4409 if (state == TPACPI_RFK_RADIO_ON)
08fedfc9
HMH		 4410 status = TP_ACPI_BLUETOOTH_RADIOSSW
4411 | TP_ACPI_BLUETOOTH_RESUMECTRL;
4412 else
4413 status = 0;
19d337df 4414
07431ec8
HMH		 4415 if (!acpi_evalf(hkey_handle, NULL, "SBDC", "vd", status))
4416 return -EIO;
4417
4418 return 0;
4419}
f74a27d4 4420
d3a6ade4
HMH		 4421/* sysfs bluetooth enable ---------------------------------------------- */
4422static ssize_t bluetooth_enable_show(struct device *dev,
4423 struct device_attribute *attr,
4424 char *buf)
4425{
19d337df
JB		 4426 return tpacpi_rfk_sysfs_enable_show(TPACPI_RFK_BLUETOOTH_SW_ID,
4427 attr, buf);
d3a6ade4
HMH		 4428}
4429
4430static ssize_t bluetooth_enable_store(struct device *dev,
4431 struct device_attribute *attr,
4432 const char *buf, size_t count)
4433{
19d337df
JB		 4434 return tpacpi_rfk_sysfs_enable_store(TPACPI_RFK_BLUETOOTH_SW_ID,
4435 attr, buf, count);
d3a6ade4
HMH		 4436}
4437
b4dd04ac 4438static DEVICE_ATTR_RW(bluetooth_enable);
d3a6ade4
HMH		 4439
4440/* --------------------------------------------------------------------- */
4441
4442static struct attribute *bluetooth_attributes[] = {
4443 &dev_attr_bluetooth_enable.attr,
4444 NULL
4445};
4446
4447static const struct attribute_group bluetooth_attr_group = {
d3a6ade4
HMH		 4448 .attrs = bluetooth_attributes,
4449};
4450
19d337df
JB		 4451static const struct tpacpi_rfk_ops bluetooth_tprfk_ops = {
4452 .get_status = bluetooth_get_status,
4453 .set_status = bluetooth_set_status,
4454};
0e74dc26 4455
90d9d3c7
HMH		 4456static void bluetooth_shutdown(void)
4457{
4458 /* Order firmware to save current state to NVRAM */
4459 if (!acpi_evalf(NULL, NULL, "\\BLTH", "vd",
4460 TP_ACPI_BLTH_SAVE_STATE))
0978e012 4461 pr_notice("failed to save bluetooth state to NVRAM\n");
bee4cd9b
HMH		 4462 else
4463 vdbg_printk(TPACPI_DBG_RFKILL,
1f01358c 4464 "bluetooth state saved to NVRAM\n");
90d9d3c7
HMH		 4465}
4466
07431ec8
HMH		 4467static void bluetooth_exit(void)
4468{
4469 sysfs_remove_group(&tpacpi_pdev->dev.kobj,
4470 &bluetooth_attr_group);
19d337df
JB		 4471
4472 tpacpi_destroy_rfkill(TPACPI_RFK_BLUETOOTH_SW_ID);
4473
4474 bluetooth_shutdown();
07431ec8
HMH		 4475}
4476
a5763f22 4477static int __init bluetooth_init(struct ibm_init_struct *iibm)
1da177e4 4478{
d3a6ade4 4479 int res;
d6fdd1e9
HMH		 4480 int status = 0;
4481
bee4cd9b
HMH		 4482 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL,
4483 "initializing bluetooth subdriver\n");
fe08bc4b 4484
e0c7dfe7 4485 TPACPI_ACPIHANDLE_INIT(hkey);
5fba344c 4486
78f81cc4
BD		 4487 /* bluetooth not supported on 570, 600e/x, 770e, 770x, A21e, A2xm/p,
4488 G4x, R30, R31, R40e, R50e, T20-22, X20-21 */
d8fd94d9 4489 tp_features.bluetooth = hkey_handle &&
d6fdd1e9
HMH		 4490 acpi_evalf(hkey_handle, &status, "GBDC", "qd");
4491
bee4cd9b
HMH		 4492 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL,
4493 "bluetooth is %s, status 0x%02x\n",
d6fdd1e9
HMH		 4494 str_supported(tp_features.bluetooth),
4495 status);
4496
a73f3091
HMH		 4497#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
4498 if (dbg_bluetoothemul) {
4499 tp_features.bluetooth = 1;
0978e012 4500 pr_info("bluetooth switch emulation enabled\n");
a73f3091
HMH		 4501 } else
4502#endif
3a872080
HMH		 4503 if (tp_features.bluetooth &&
4504 !(status & TP_ACPI_BLUETOOTH_HWPRESENT)) {
4505 /* no bluetooth hardware present in system */
4506 tp_features.bluetooth = 0;
bee4cd9b 4507 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL,
3a872080
HMH		 4508 "bluetooth hardware not installed\n");
4509 }
4510
0e74dc26
HMH		 4511 if (!tp_features.bluetooth)
4512 return 1;
4513
0e74dc26 4514 res = tpacpi_new_rfkill(TPACPI_RFK_BLUETOOTH_SW_ID,
19d337df 4515 &bluetooth_tprfk_ops,
0e74dc26 4516 RFKILL_TYPE_BLUETOOTH,
bee4cd9b 4517 TPACPI_RFK_BLUETOOTH_SW_NAME,
19d337df
JB		 4518 true);
4519 if (res)
4520 return res;
4521
4522 res = sysfs_create_group(&tpacpi_pdev->dev.kobj,
4523 &bluetooth_attr_group);
0e74dc26 4524 if (res) {
19d337df 4525 tpacpi_destroy_rfkill(TPACPI_RFK_BLUETOOTH_SW_ID);
0e74dc26 4526 return res;
d6fdd1e9 4527 }
fe08bc4b 4528
0e74dc26 4529 return 0;
1da177e4
LT		 4530}
4531
d3a6ade4 4532/* procfs -------------------------------------------------------------- */
887965e6 4533static int bluetooth_read(struct seq_file *m)
1da177e4 4534{
887965e6 4535 return tpacpi_rfk_procfs_read(TPACPI_RFK_BLUETOOTH_SW_ID, m);
1da177e4
LT		 4536}
4537
78f81cc4 4538static int bluetooth_write(char *buf)
1da177e4 4539{
19d337df 4540 return tpacpi_rfk_procfs_write(TPACPI_RFK_BLUETOOTH_SW_ID, buf);
1da177e4
LT		 4541}
4542
a5763f22
HMH		 4543static struct ibm_struct bluetooth_driver_data = {
4544 .name = "bluetooth",
4545 .read = bluetooth_read,
4546 .write = bluetooth_write,
d3a6ade4 4547 .exit = bluetooth_exit,
90d9d3c7 4548 .shutdown = bluetooth_shutdown,
a5763f22
HMH		 4549};
4550
56b6aeb0
HMH		 4551/*************************************************************************
4552 * Wan subdriver
4553 */
4554
f74a27d4
HMH		 4555enum {
4556 /* ACPI GWAN/SWAN bits */
4557 TP_ACPI_WANCARD_HWPRESENT = 0x01, /* Wan hw available */
4558 TP_ACPI_WANCARD_RADIOSSW = 0x02, /* Wan radio enabled */
153f8220 4559 TP_ACPI_WANCARD_RESUMECTRL = 0x04, /* Wan state at resume:
08fedfc9 4560 0 = disable, 1 = enable */
f74a27d4
HMH		 4561};
4562
bee4cd9b
HMH		 4563#define TPACPI_RFK_WWAN_SW_NAME "tpacpi_wwan_sw"
4564
19d337df 4565static int wan_get_status(void)
07431ec8
HMH		 4566{
4567 int status;
4568
a73f3091
HMH		 4569#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
4570 if (dbg_wwanemul)
4571 return (tpacpi_wwan_emulstate) ?
19d337df 4572 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF;
a73f3091
HMH		 4573#endif
4574
07431ec8
HMH		 4575 if (!acpi_evalf(hkey_handle, &status, "GWAN", "d"))
4576 return -EIO;
4577
0e74dc26 4578 return ((status & TP_ACPI_WANCARD_RADIOSSW) != 0) ?
19d337df 4579 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF;
0e74dc26
HMH		 4580}
4581
19d337df 4582static int wan_set_status(enum tpacpi_rfkill_state state)
07431ec8
HMH		 4583{
4584 int status;
4585
bee4cd9b 4586 vdbg_printk(TPACPI_DBG_RFKILL,
19d337df
JB		 4587 "will attempt to %s wwan\n",
4588 (state == TPACPI_RFK_RADIO_ON) ? "enable" : "disable");
bee4cd9b 4589
a73f3091
HMH		 4590#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
4591 if (dbg_wwanemul) {
19d337df 4592 tpacpi_wwan_emulstate = (state == TPACPI_RFK_RADIO_ON);
a73f3091
HMH		 4593 return 0;
4594 }
4595#endif
4596
19d337df 4597 if (state == TPACPI_RFK_RADIO_ON)
08fedfc9
HMH		 4598 status = TP_ACPI_WANCARD_RADIOSSW
4599 | TP_ACPI_WANCARD_RESUMECTRL;
4600 else
4601 status = 0;
19d337df 4602
07431ec8
HMH		 4603 if (!acpi_evalf(hkey_handle, NULL, "SWAN", "vd", status))
4604 return -EIO;
4605
4606 return 0;
4607}
f74a27d4 4608
d3a6ade4
HMH		 4609/* sysfs wan enable ---------------------------------------------------- */
4610static ssize_t wan_enable_show(struct device *dev,
4611 struct device_attribute *attr,
4612 char *buf)
4613{
19d337df
JB		 4614 return tpacpi_rfk_sysfs_enable_show(TPACPI_RFK_WWAN_SW_ID,
4615 attr, buf);
d3a6ade4
HMH		 4616}
4617
4618static ssize_t wan_enable_store(struct device *dev,
4619 struct device_attribute *attr,
4620 const char *buf, size_t count)
4621{
19d337df
JB		 4622 return tpacpi_rfk_sysfs_enable_store(TPACPI_RFK_WWAN_SW_ID,
4623 attr, buf, count);
d3a6ade4
HMH		 4624}
4625
5fb73bc2
BM		 4626static DEVICE_ATTR(wwan_enable, S_IWUSR | S_IRUGO,
4627 wan_enable_show, wan_enable_store);
d3a6ade4
HMH		 4628
4629/* --------------------------------------------------------------------- */
4630
4631static struct attribute *wan_attributes[] = {
5fb73bc2 4632 &dev_attr_wwan_enable.attr,
d3a6ade4
HMH		 4633 NULL
4634};
4635
4636static const struct attribute_group wan_attr_group = {
d3a6ade4
HMH		 4637 .attrs = wan_attributes,
4638};
4639
19d337df
JB		 4640static const struct tpacpi_rfk_ops wan_tprfk_ops = {
4641 .get_status = wan_get_status,
4642 .set_status = wan_set_status,
4643};
0e74dc26 4644
90d9d3c7
HMH		 4645static void wan_shutdown(void)
4646{
4647 /* Order firmware to save current state to NVRAM */
4648 if (!acpi_evalf(NULL, NULL, "\\WGSV", "vd",
4649 TP_ACPI_WGSV_SAVE_STATE))
0978e012 4650 pr_notice("failed to save WWAN state to NVRAM\n");
bee4cd9b
HMH		 4651 else
4652 vdbg_printk(TPACPI_DBG_RFKILL,
4653 "WWAN state saved to NVRAM\n");
90d9d3c7
HMH		 4654}
4655
07431ec8
HMH		 4656static void wan_exit(void)
4657{
4658 sysfs_remove_group(&tpacpi_pdev->dev.kobj,
4659 &wan_attr_group);
19d337df
JB		 4660
4661 tpacpi_destroy_rfkill(TPACPI_RFK_WWAN_SW_ID);
4662
4663 wan_shutdown();
07431ec8
HMH		 4664}
4665
a5763f22 4666static int __init wan_init(struct ibm_init_struct *iibm)
42adb53c 4667{
d3a6ade4 4668 int res;
d6fdd1e9
HMH		 4669 int status = 0;
4670
bee4cd9b
HMH		 4671 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL,
4672 "initializing wan subdriver\n");
fe08bc4b 4673
e0c7dfe7 4674 TPACPI_ACPIHANDLE_INIT(hkey);
5fba344c 4675
d8fd94d9 4676 tp_features.wan = hkey_handle &&
d6fdd1e9
HMH		 4677 acpi_evalf(hkey_handle, &status, "GWAN", "qd");
4678
bee4cd9b
HMH		 4679 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL,
4680 "wan is %s, status 0x%02x\n",
d6fdd1e9
HMH		 4681 str_supported(tp_features.wan),
4682 status);
4683
a73f3091
HMH		 4684#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
4685 if (dbg_wwanemul) {
4686 tp_features.wan = 1;
0978e012 4687 pr_info("wwan switch emulation enabled\n");
a73f3091
HMH		 4688 } else
4689#endif
3a872080
HMH		 4690 if (tp_features.wan &&
4691 !(status & TP_ACPI_WANCARD_HWPRESENT)) {
4692 /* no wan hardware present in system */
4693 tp_features.wan = 0;
bee4cd9b 4694 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL,
3a872080
HMH		 4695 "wan hardware not installed\n");
4696 }
4697
0e74dc26
HMH		 4698 if (!tp_features.wan)
4699 return 1;
4700
0e74dc26 4701 res = tpacpi_new_rfkill(TPACPI_RFK_WWAN_SW_ID,
19d337df 4702 &wan_tprfk_ops,
0e74dc26 4703 RFKILL_TYPE_WWAN,
bee4cd9b 4704 TPACPI_RFK_WWAN_SW_NAME,
19d337df
JB		 4705 true);
4706 if (res)
4707 return res;
4708
4709 res = sysfs_create_group(&tpacpi_pdev->dev.kobj,
4710 &wan_attr_group);
4711
0e74dc26 4712 if (res) {
19d337df 4713 tpacpi_destroy_rfkill(TPACPI_RFK_WWAN_SW_ID);
0e74dc26 4714 return res;
d6fdd1e9 4715 }
fe08bc4b 4716
0e74dc26 4717 return 0;
42adb53c
JF		 4718}
4719
d3a6ade4 4720/* procfs -------------------------------------------------------------- */
887965e6 4721static int wan_read(struct seq_file *m)
42adb53c 4722{
887965e6 4723 return tpacpi_rfk_procfs_read(TPACPI_RFK_WWAN_SW_ID, m);
42adb53c
JF		 4724}
4725
4726static int wan_write(char *buf)
4727{
19d337df 4728 return tpacpi_rfk_procfs_write(TPACPI_RFK_WWAN_SW_ID, buf);
42adb53c
JF		 4729}
4730
a5763f22
HMH		 4731static struct ibm_struct wan_driver_data = {
4732 .name = "wan",
4733 .read = wan_read,
4734 .write = wan_write,
d3a6ade4 4735 .exit = wan_exit,
90d9d3c7 4736 .shutdown = wan_shutdown,
a5763f22
HMH		 4737};
4738
0045c0aa
HMH		 4739/*************************************************************************
4740 * UWB subdriver
4741 */
4742
4743enum {
4744 /* ACPI GUWB/SUWB bits */
4745 TP_ACPI_UWB_HWPRESENT = 0x01, /* UWB hw available */
4746 TP_ACPI_UWB_RADIOSSW = 0x02, /* UWB radio enabled */
4747};
4748
bee4cd9b
HMH		 4749#define TPACPI_RFK_UWB_SW_NAME "tpacpi_uwb_sw"
4750
19d337df 4751static int uwb_get_status(void)
0045c0aa
HMH		 4752{
4753 int status;
4754
0045c0aa
HMH		 4755#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
4756 if (dbg_uwbemul)
4757 return (tpacpi_uwb_emulstate) ?
19d337df 4758 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF;
0045c0aa
HMH		 4759#endif
4760
4761 if (!acpi_evalf(hkey_handle, &status, "GUWB", "d"))
4762 return -EIO;
4763
4764 return ((status & TP_ACPI_UWB_RADIOSSW) != 0) ?
19d337df 4765 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF;
0045c0aa
HMH		 4766}
4767
19d337df 4768static int uwb_set_status(enum tpacpi_rfkill_state state)
0045c0aa
HMH		 4769{
4770 int status;
4771
bee4cd9b 4772 vdbg_printk(TPACPI_DBG_RFKILL,
19d337df
JB		 4773 "will attempt to %s UWB\n",
4774 (state == TPACPI_RFK_RADIO_ON) ? "enable" : "disable");
bee4cd9b 4775
0045c0aa
HMH		 4776#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
4777 if (dbg_uwbemul) {
19d337df 4778 tpacpi_uwb_emulstate = (state == TPACPI_RFK_RADIO_ON);
0045c0aa
HMH		 4779 return 0;
4780 }
4781#endif
4782
19d337df
JB		 4783 if (state == TPACPI_RFK_RADIO_ON)
4784 status = TP_ACPI_UWB_RADIOSSW;
4785 else
4786 status = 0;
4787
0045c0aa
HMH		 4788 if (!acpi_evalf(hkey_handle, NULL, "SUWB", "vd", status))
4789 return -EIO;
4790
0045c0aa
HMH		 4791 return 0;
4792}
4793
4794/* --------------------------------------------------------------------- */
4795
19d337df
JB		 4796static const struct tpacpi_rfk_ops uwb_tprfk_ops = {
4797 .get_status = uwb_get_status,
4798 .set_status = uwb_set_status,
4799};
0045c0aa
HMH		 4800
4801static void uwb_exit(void)
4802{
19d337df 4803 tpacpi_destroy_rfkill(TPACPI_RFK_UWB_SW_ID);
0045c0aa
HMH		 4804}
4805
4806static int __init uwb_init(struct ibm_init_struct *iibm)
4807{
4808 int res;
4809 int status = 0;
4810
bee4cd9b
HMH		 4811 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL,
4812 "initializing uwb subdriver\n");
0045c0aa
HMH		 4813
4814 TPACPI_ACPIHANDLE_INIT(hkey);
4815
4816 tp_features.uwb = hkey_handle &&
4817 acpi_evalf(hkey_handle, &status, "GUWB", "qd");
4818
bee4cd9b
HMH		 4819 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL,
4820 "uwb is %s, status 0x%02x\n",
0045c0aa
HMH		 4821 str_supported(tp_features.uwb),
4822 status);
4823
4824#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
4825 if (dbg_uwbemul) {
4826 tp_features.uwb = 1;
0978e012 4827 pr_info("uwb switch emulation enabled\n");
0045c0aa
HMH		 4828 } else
4829#endif
4830 if (tp_features.uwb &&
4831 !(status & TP_ACPI_UWB_HWPRESENT)) {
4832 /* no uwb hardware present in system */
4833 tp_features.uwb = 0;
4834 dbg_printk(TPACPI_DBG_INIT,
4835 "uwb hardware not installed\n");
4836 }
4837
4838 if (!tp_features.uwb)
4839 return 1;
4840
4841 res = tpacpi_new_rfkill(TPACPI_RFK_UWB_SW_ID,
19d337df 4842 &uwb_tprfk_ops,
0045c0aa 4843 RFKILL_TYPE_UWB,
bee4cd9b 4844 TPACPI_RFK_UWB_SW_NAME,
19d337df 4845 false);
0045c0aa
HMH		 4846 return res;
4847}
4848
4849static struct ibm_struct uwb_driver_data = {
4850 .name = "uwb",
4851 .exit = uwb_exit,
4852 .flags.experimental = 1,
4853};
4854
56b6aeb0
HMH		 4855/*************************************************************************
4856 * Video subdriver
4857 */
4858
d7c1d17d
HMH		 4859#ifdef CONFIG_THINKPAD_ACPI_VIDEO
4860
f74a27d4
HMH		 4861enum video_access_mode {
4862 TPACPI_VIDEO_NONE = 0,
4863 TPACPI_VIDEO_570, /* 570 */
4864 TPACPI_VIDEO_770, /* 600e/x, 770e, 770x */
4865 TPACPI_VIDEO_NEW, /* all others */
4866};
4867
4868enum { /* video status flags, based on VIDEO_570 */
4869 TP_ACPI_VIDEO_S_LCD = 0x01, /* LCD output enabled */
4870 TP_ACPI_VIDEO_S_CRT = 0x02, /* CRT output enabled */
4871 TP_ACPI_VIDEO_S_DVI = 0x08, /* DVI output enabled */
4872};
4873
4874enum { /* TPACPI_VIDEO_570 constants */
4875 TP_ACPI_VIDEO_570_PHSCMD = 0x87, /* unknown magic constant :( */
4876 TP_ACPI_VIDEO_570_PHSMASK = 0x03, /* PHS bits that map to
4877 * video_status_flags */
4878 TP_ACPI_VIDEO_570_PHS2CMD = 0x8b, /* unknown magic constant :( */
4879 TP_ACPI_VIDEO_570_PHS2SET = 0x80, /* unknown magic constant :( */
4880};
4881
9a8e1738
HMH		 4882static enum video_access_mode video_supported;
4883static int video_orig_autosw;
78f81cc4 4884
f74a27d4
HMH		 4885static int video_autosw_get(void);
4886static int video_autosw_set(int enable);
4887
112a6ee0
JP		 4888TPACPI_HANDLE(vid, root,
4889 "\\_SB.PCI.AGP.VGA", /* 570 */
4890 "\\_SB.PCI0.AGP0.VID0", /* 600e/x, 770x */
4891 "\\_SB.PCI0.VID0", /* 770e */
4892 "\\_SB.PCI0.VID", /* A21e, G4x, R50e, X30, X40 */
4893 "\\_SB.PCI0.AGP.VGA", /* X100e and a few others */
4894 "\\_SB.PCI0.AGP.VID", /* all others */
4895 ); /* R30, R31 */
4896
e0c7dfe7 4897TPACPI_HANDLE(vid2, root, "\\_SB.PCI0.AGPB.VID"); /* G41 */
56b6aeb0 4898
a5763f22 4899static int __init video_init(struct ibm_init_struct *iibm)
1da177e4 4900{
78f81cc4
BD		 4901 int ivga;
4902
fe08bc4b
HMH		 4903 vdbg_printk(TPACPI_DBG_INIT, "initializing video subdriver\n");
4904
e0c7dfe7 4905 TPACPI_ACPIHANDLE_INIT(vid);
e28393c0
HMH		 4906 if (tpacpi_is_ibm())
4907 TPACPI_ACPIHANDLE_INIT(vid2);
5fba344c 4908
78f81cc4
BD		 4909 if (vid2_handle && acpi_evalf(NULL, &ivga, "\\IVGA", "d") && ivga)
4910 /* G41, assume IVGA doesn't change */
4911 vid_handle = vid2_handle;
4912
4913 if (!vid_handle)
4914 /* video switching not supported on R30, R31 */
efa27145 4915 video_supported = TPACPI_VIDEO_NONE;
e28393c0
HMH		 4916 else if (tpacpi_is_ibm() &&
4917 acpi_evalf(vid_handle, &video_orig_autosw, "SWIT", "qd"))
78f81cc4 4918 /* 570 */
efa27145 4919 video_supported = TPACPI_VIDEO_570;
e28393c0
HMH		 4920 else if (tpacpi_is_ibm() &&
4921 acpi_evalf(vid_handle, &video_orig_autosw, "^VADL", "qd"))
78f81cc4 4922 /* 600e/x, 770e, 770x */
efa27145 4923 video_supported = TPACPI_VIDEO_770;
78f81cc4
BD		 4924 else
4925 /* all others */
efa27145 4926 video_supported = TPACPI_VIDEO_NEW;
1da177e4 4927
fe08bc4b
HMH		 4928 vdbg_printk(TPACPI_DBG_INIT, "video is %s, mode %d\n",
4929 str_supported(video_supported != TPACPI_VIDEO_NONE),
4930 video_supported);
4931
72a979f0 4932 return (video_supported != TPACPI_VIDEO_NONE) ? 0 : 1;
1da177e4
LT		 4933}
4934
56b6aeb0
HMH		 4935static void video_exit(void)
4936{
83f34724
HMH		 4937 dbg_printk(TPACPI_DBG_EXIT,
4938 "restoring original video autoswitch mode\n");
4939 if (video_autosw_set(video_orig_autosw))
5cac62ac 4940 pr_err("error while trying to restore original video autoswitch mode\n");
56b6aeb0
HMH		 4941}
4942
83f34724 4943static int video_outputsw_get(void)
1da177e4
LT		 4944{
4945 int status = 0;
4946 int i;
4947
83f34724
HMH		 4948 switch (video_supported) {
4949 case TPACPI_VIDEO_570:
4950 if (!acpi_evalf(NULL, &i, "\\_SB.PHS", "dd",
4951 TP_ACPI_VIDEO_570_PHSCMD))
4952 return -EIO;
4953 status = i & TP_ACPI_VIDEO_570_PHSMASK;
4954 break;
4955 case TPACPI_VIDEO_770:
4956 if (!acpi_evalf(NULL, &i, "\\VCDL", "d"))
4957 return -EIO;
4958 if (i)
4959 status |= TP_ACPI_VIDEO_S_LCD;
4960 if (!acpi_evalf(NULL, &i, "\\VCDC", "d"))
4961 return -EIO;
4962 if (i)
4963 status |= TP_ACPI_VIDEO_S_CRT;
4964 break;
4965 case TPACPI_VIDEO_NEW:
4966 if (!acpi_evalf(NULL, NULL, "\\VUPS", "vd", 1) ||
4967 !acpi_evalf(NULL, &i, "\\VCDC", "d"))
4968 return -EIO;
4969 if (i)
4970 status |= TP_ACPI_VIDEO_S_CRT;
4971
4972 if (!acpi_evalf(NULL, NULL, "\\VUPS", "vd", 0) ||
4973 !acpi_evalf(NULL, &i, "\\VCDL", "d"))
4974 return -EIO;
4975 if (i)
4976 status |= TP_ACPI_VIDEO_S_LCD;
4977 if (!acpi_evalf(NULL, &i, "\\VCDD", "d"))
4978 return -EIO;
4979 if (i)
4980 status |= TP_ACPI_VIDEO_S_DVI;
4981 break;
4982 default:
4983 return -ENOSYS;
78f81cc4
BD		 4984 }
4985
4986 return status;
4987}
1da177e4 4988
83f34724 4989static int video_outputsw_set(int status)
78f81cc4 4990{
83f34724
HMH		 4991 int autosw;
4992 int res = 0;
4993
4994 switch (video_supported) {
4995 case TPACPI_VIDEO_570:
4996 res = acpi_evalf(NULL, NULL,
4997 "\\_SB.PHS2", "vdd",
4998 TP_ACPI_VIDEO_570_PHS2CMD,
4999 status | TP_ACPI_VIDEO_570_PHS2SET);
5000 break;
5001 case TPACPI_VIDEO_770:
5002 autosw = video_autosw_get();
5003 if (autosw < 0)
5004 return autosw;
1da177e4 5005
83f34724
HMH		 5006 res = video_autosw_set(1);
5007 if (res)
5008 return res;
5009 res = acpi_evalf(vid_handle, NULL,
5010 "ASWT", "vdd", status * 0x100, 0);
5011 if (!autosw && video_autosw_set(autosw)) {
0978e012 5012 pr_err("video auto-switch left enabled due to error\n");
83f34724
HMH		 5013 return -EIO;
5014 }
5015 break;
5016 case TPACPI_VIDEO_NEW:
5017 res = acpi_evalf(NULL, NULL, "\\VUPS", "vd", 0x80) &&
35ff8b9f 5018 acpi_evalf(NULL, NULL, "\\VSDS", "vdd", status, 1);
83f34724
HMH		 5019 break;
5020 default:
5021 return -ENOSYS;
5022 }
1da177e4 5023
72a979f0 5024 return (res) ? 0 : -EIO;
1da177e4
LT		 5025}
5026
83f34724 5027static int video_autosw_get(void)
78f81cc4 5028{
83f34724 5029 int autosw = 0;
78f81cc4 5030
83f34724
HMH		 5031 switch (video_supported) {
5032 case TPACPI_VIDEO_570:
5033 if (!acpi_evalf(vid_handle, &autosw, "SWIT", "d"))
5034 return -EIO;
5035 break;
5036 case TPACPI_VIDEO_770:
5037 case TPACPI_VIDEO_NEW:
5038 if (!acpi_evalf(vid_handle, &autosw, "^VDEE", "d"))
5039 return -EIO;
5040 break;
5041 default:
5042 return -ENOSYS;
5043 }
78f81cc4 5044
83f34724 5045 return autosw & 1;
78f81cc4
BD		 5046}
5047
83f34724 5048static int video_autosw_set(int enable)
78f81cc4 5049{
72a979f0 5050 if (!acpi_evalf(vid_handle, NULL, "_DOS", "vd", (enable) ? 1 : 0))
83f34724
HMH		 5051 return -EIO;
5052 return 0;
78f81cc4
BD		 5053}
5054
83f34724 5055static int video_outputsw_cycle(void)
78f81cc4 5056{
83f34724
HMH		 5057 int autosw = video_autosw_get();
5058 int res;
78f81cc4 5059
83f34724
HMH		 5060 if (autosw < 0)
5061 return autosw;
78f81cc4 5062
83f34724
HMH		 5063 switch (video_supported) {
5064 case TPACPI_VIDEO_570:
5065 res = video_autosw_set(1);
5066 if (res)
5067 return res;
5068 res = acpi_evalf(ec_handle, NULL, "_Q16", "v");
5069 break;
5070 case TPACPI_VIDEO_770:
5071 case TPACPI_VIDEO_NEW:
5072 res = video_autosw_set(1);
5073 if (res)
5074 return res;
5075 res = acpi_evalf(vid_handle, NULL, "VSWT", "v");
5076 break;
5077 default:
5078 return -ENOSYS;
5079 }
5080 if (!autosw && video_autosw_set(autosw)) {
0978e012 5081 pr_err("video auto-switch left enabled due to error\n");
83f34724 5082 return -EIO;
78f81cc4
BD		 5083 }
5084
72a979f0 5085 return (res) ? 0 : -EIO;
83f34724
HMH		 5086}
5087
5088static int video_expand_toggle(void)
5089{
5090 switch (video_supported) {
5091 case TPACPI_VIDEO_570:
72a979f0 5092 return acpi_evalf(ec_handle, NULL, "_Q17", "v") ?
83f34724
HMH		 5093 0 : -EIO;
5094 case TPACPI_VIDEO_770:
72a979f0 5095 return acpi_evalf(vid_handle, NULL, "VEXP", "v") ?
83f34724
HMH		 5096 0 : -EIO;
5097 case TPACPI_VIDEO_NEW:
72a979f0 5098 return acpi_evalf(NULL, NULL, "\\VEXP", "v") ?
83f34724
HMH		 5099 0 : -EIO;
5100 default:
5101 return -ENOSYS;
5102 }
5103 /* not reached */
78f81cc4
BD		 5104}
5105
887965e6 5106static int video_read(struct seq_file *m)
56b6aeb0 5107{
83f34724 5108 int status, autosw;
56b6aeb0 5109
83f34724 5110 if (video_supported == TPACPI_VIDEO_NONE) {
887965e6
AD		 5111 seq_printf(m, "status:\t\tnot supported\n");
5112 return 0;
56b6aeb0
HMH		 5113 }
5114
b525c06c
HMH		 5115 /* Even reads can crash X.org, so... */
5116 if (!capable(CAP_SYS_ADMIN))
5117 return -EPERM;
5118
83f34724
HMH		 5119 status = video_outputsw_get();
5120 if (status < 0)
5121 return status;
5122
5123 autosw = video_autosw_get();
5124 if (autosw < 0)
5125 return autosw;
5126
887965e6
AD		 5127 seq_printf(m, "status:\t\tsupported\n");
5128 seq_printf(m, "lcd:\t\t%s\n", enabled(status, 0));
5129 seq_printf(m, "crt:\t\t%s\n", enabled(status, 1));
efa27145 5130 if (video_supported == TPACPI_VIDEO_NEW)
887965e6
AD		 5131 seq_printf(m, "dvi:\t\t%s\n", enabled(status, 3));
5132 seq_printf(m, "auto:\t\t%s\n", enabled(autosw, 0));
5133 seq_printf(m, "commands:\tlcd_enable, lcd_disable\n");
5134 seq_printf(m, "commands:\tcrt_enable, crt_disable\n");
efa27145 5135 if (video_supported == TPACPI_VIDEO_NEW)
887965e6
AD		 5136 seq_printf(m, "commands:\tdvi_enable, dvi_disable\n");
5137 seq_printf(m, "commands:\tauto_enable, auto_disable\n");
5138 seq_printf(m, "commands:\tvideo_switch, expand_toggle\n");
56b6aeb0 5139
887965e6 5140 return 0;
56b6aeb0
HMH		 5141}
5142
78f81cc4 5143static int video_write(char *buf)
1da177e4
LT		 5144{
5145 char *cmd;
5146 int enable, disable, status;
83f34724 5147 int res;
1da177e4 5148
83f34724 5149 if (video_supported == TPACPI_VIDEO_NONE)
78f81cc4
BD		 5150 return -ENODEV;
5151
b525c06c
HMH		 5152 /* Even reads can crash X.org, let alone writes... */
5153 if (!capable(CAP_SYS_ADMIN))
5154 return -EPERM;
5155
83f34724
HMH		 5156 enable = 0;
5157 disable = 0;
1da177e4
LT		 5158
5159 while ((cmd = next_cmd(&buf))) {
5160 if (strlencmp(cmd, "lcd_enable") == 0) {
83f34724 5161 enable |= TP_ACPI_VIDEO_S_LCD;
1da177e4 5162 } else if (strlencmp(cmd, "lcd_disable") == 0) {
83f34724 5163 disable |= TP_ACPI_VIDEO_S_LCD;
1da177e4 5164 } else if (strlencmp(cmd, "crt_enable") == 0) {
83f34724 5165 enable |= TP_ACPI_VIDEO_S_CRT;
1da177e4 5166 } else if (strlencmp(cmd, "crt_disable") == 0) {
83f34724 5167 disable |= TP_ACPI_VIDEO_S_CRT;
efa27145 5168 } else if (video_supported == TPACPI_VIDEO_NEW &&
78f81cc4 5169 strlencmp(cmd, "dvi_enable") == 0) {
83f34724 5170 enable |= TP_ACPI_VIDEO_S_DVI;
efa27145 5171 } else if (video_supported == TPACPI_VIDEO_NEW &&
78f81cc4 5172 strlencmp(cmd, "dvi_disable") == 0) {
83f34724 5173 disable |= TP_ACPI_VIDEO_S_DVI;
1da177e4 5174 } else if (strlencmp(cmd, "auto_enable") == 0) {
83f34724
HMH		 5175 res = video_autosw_set(1);
5176 if (res)
5177 return res;
1da177e4 5178 } else if (strlencmp(cmd, "auto_disable") == 0) {
83f34724
HMH		 5179 res = video_autosw_set(0);
5180 if (res)
5181 return res;
1da177e4 5182 } else if (strlencmp(cmd, "video_switch") == 0) {
83f34724
HMH		 5183 res = video_outputsw_cycle();
5184 if (res)
5185 return res;
1da177e4 5186 } else if (strlencmp(cmd, "expand_toggle") == 0) {
83f34724
HMH		 5187 res = video_expand_toggle();
5188 if (res)
5189 return res;
1da177e4
LT		 5190 } else
5191 return -EINVAL;
5192 }
5193
5194 if (enable || disable) {
83f34724
HMH		 5195 status = video_outputsw_get();
5196 if (status < 0)
5197 return status;
5198 res = video_outputsw_set((status & ~disable) | enable);
5199 if (res)
5200 return res;
1da177e4
LT		 5201 }
5202
5203 return 0;
5204}
5205
a5763f22
HMH		 5206static struct ibm_struct video_driver_data = {
5207 .name = "video",
5208 .read = video_read,
5209 .write = video_write,
5210 .exit = video_exit,
5211};
5212
d7c1d17d
HMH		 5213#endif /* CONFIG_THINKPAD_ACPI_VIDEO */
5214
bb28f3d5
PR		 5215/*************************************************************************
5216 * Keyboard backlight subdriver
5217 */
5218
c685e20d
HG		 5219static enum led_brightness kbdlight_brightness;
5220static DEFINE_MUTEX(kbdlight_mutex);
5221
bb28f3d5
PR		 5222static int kbdlight_set_level(int level)
5223{
c685e20d
HG		 5224 int ret = 0;
5225
bb28f3d5
PR		 5226 if (!hkey_handle)
5227 return -ENXIO;
5228
c685e20d
HG		 5229 mutex_lock(&kbdlight_mutex);
5230
bb28f3d5 5231 if (!acpi_evalf(hkey_handle, NULL, "MLCS", "dd", level))
c685e20d
HG		 5232 ret = -EIO;
5233 else
5234 kbdlight_brightness = level;
bb28f3d5 5235
c685e20d
HG		 5236 mutex_unlock(&kbdlight_mutex);
5237
5238 return ret;
bb28f3d5
PR		 5239}
5240
5241static int kbdlight_get_level(void)
5242{
5243 int status = 0;
5244
5245 if (!hkey_handle)
5246 return -ENXIO;
5247
5248 if (!acpi_evalf(hkey_handle, &status, "MLCG", "dd", 0))
5249 return -EIO;
5250
5251 if (status < 0)
5252 return status;
5253
5254 return status & 0x3;
5255}
5256
5257static bool kbdlight_is_supported(void)
5258{
5259 int status = 0;
5260
5261 if (!hkey_handle)
5262 return false;
5263
5264 if (!acpi_has_method(hkey_handle, "MLCG")) {
5265 vdbg_printk(TPACPI_DBG_INIT, "kbdlight MLCG is unavailable\n");
5266 return false;
5267 }
5268
5269 if (!acpi_evalf(hkey_handle, &status, "MLCG", "qdd", 0)) {
5270 vdbg_printk(TPACPI_DBG_INIT, "kbdlight MLCG failed\n");
5271 return false;
5272 }
5273
5274 if (status < 0) {
5275 vdbg_printk(TPACPI_DBG_INIT, "kbdlight MLCG err: %d\n", status);
5276 return false;
5277 }
5278
5279 vdbg_printk(TPACPI_DBG_INIT, "kbdlight MLCG returned 0x%x\n", status);
5280 /*
5281 * Guessed test for keyboard backlight:
5282 *
5283 * Machines with backlight keyboard return:
5284 * b010100000010000000XX - ThinkPad X1 Carbon 3rd
5285 * b110100010010000000XX - ThinkPad x230
5286 * b010100000010000000XX - ThinkPad x240
5287 * b010100000010000000XX - ThinkPad W541
5288 * (XX is current backlight level)
5289 *
5290 * Machines without backlight keyboard return:
5291 * b10100001000000000000 - ThinkPad x230
5292 * b10110001000000000000 - ThinkPad E430
5293 * b00000000000000000000 - ThinkPad E450
5294 *
5295 * Candidate BITs for detection test (XOR):
5296 * b01000000001000000000
5297 * ^
5298 */
5299 return status & BIT(9);
5300}
5301
86ec0c2c 5302static int kbdlight_sysfs_set(struct led_classdev *led_cdev,
bb28f3d5
PR		 5303 enum led_brightness brightness)
5304{
86ec0c2c 5305 return kbdlight_set_level(brightness);
bb28f3d5
PR		 5306}
5307
5308static enum led_brightness kbdlight_sysfs_get(struct led_classdev *led_cdev)
5309{
5310 int level;
5311
5312 level = kbdlight_get_level();
5313 if (level < 0)
5314 return 0;
5315
5316 return level;
5317}
5318
5319static struct tpacpi_led_classdev tpacpi_led_kbdlight = {
5320 .led_classdev = {
5321 .name = "tpacpi::kbd_backlight",
5322 .max_brightness = 2,
c685e20d 5323 .flags = LED_BRIGHT_HW_CHANGED,
86ec0c2c 5324 .brightness_set_blocking = &kbdlight_sysfs_set,
bb28f3d5 5325 .brightness_get = &kbdlight_sysfs_get,
bb28f3d5
PR		 5326 }
5327};
5328
5329static int __init kbdlight_init(struct ibm_init_struct *iibm)
5330{
5331 int rc;
5332
5333 vdbg_printk(TPACPI_DBG_INIT, "initializing kbdlight subdriver\n");
5334
5335 TPACPI_ACPIHANDLE_INIT(hkey);
bb28f3d5
PR		 5336
5337 if (!kbdlight_is_supported()) {
5338 tp_features.kbdlight = 0;
5339 vdbg_printk(TPACPI_DBG_INIT, "kbdlight is unsupported\n");
5340 return 1;
5341 }
5342
c685e20d 5343 kbdlight_brightness = kbdlight_sysfs_get(NULL);
bb28f3d5
PR		 5344 tp_features.kbdlight = 1;
5345
5346 rc = led_classdev_register(&tpacpi_pdev->dev,
5347 &tpacpi_led_kbdlight.led_classdev);
5348 if (rc < 0) {
5349 tp_features.kbdlight = 0;
5350 return rc;
5351 }
5352
c685e20d
HG		 5353 tpacpi_hotkey_driver_mask_set(hotkey_driver_mask |
5354 TP_ACPI_HKEY_KBD_LIGHT_MASK);
bb28f3d5
PR		 5355 return 0;
5356}
5357
5358static void kbdlight_exit(void)
5359{
5360 if (tp_features.kbdlight)
5361 led_classdev_unregister(&tpacpi_led_kbdlight.led_classdev);
bb28f3d5
PR		 5362}
5363
afcedebc
MTT		 5364static int kbdlight_set_level_and_update(int level)
5365{
5366 int ret;
5367 struct led_classdev *led_cdev;
5368
5369 ret = kbdlight_set_level(level);
5370 led_cdev = &tpacpi_led_kbdlight.led_classdev;
5371
5372 if (ret == 0 && !(led_cdev->flags & LED_SUSPENDED))
5373 led_cdev->brightness = level;
5374
5375 return ret;
5376}
5377
bb28f3d5
PR		 5378static int kbdlight_read(struct seq_file *m)
5379{
5380 int level;
5381
5382 if (!tp_features.kbdlight) {
5383 seq_printf(m, "status:\t\tnot supported\n");
5384 } else {
5385 level = kbdlight_get_level();
5386 if (level < 0)
5387 seq_printf(m, "status:\t\terror %d\n", level);
5388 else
5389 seq_printf(m, "status:\t\t%d\n", level);
5390 seq_printf(m, "commands:\t0, 1, 2\n");
5391 }
5392
5393 return 0;
5394}
5395
5396static int kbdlight_write(char *buf)
5397{
5398 char *cmd;
5399 int level = -1;
5400
5401 if (!tp_features.kbdlight)
5402 return -ENODEV;
5403
5404 while ((cmd = next_cmd(&buf))) {
5405 if (strlencmp(cmd, "0") == 0)
5406 level = 0;
5407 else if (strlencmp(cmd, "1") == 0)
5408 level = 1;
5409 else if (strlencmp(cmd, "2") == 0)
5410 level = 2;
5411 else
5412 return -EINVAL;
5413 }
5414
5415 if (level == -1)
5416 return -EINVAL;
5417
afcedebc
MTT		 5418 return kbdlight_set_level_and_update(level);
5419}
5420
5421static void kbdlight_suspend(void)
5422{
5423 struct led_classdev *led_cdev;
5424
5425 if (!tp_features.kbdlight)
5426 return;
5427
5428 led_cdev = &tpacpi_led_kbdlight.led_classdev;
5429 led_update_brightness(led_cdev);
5430 led_classdev_suspend(led_cdev);
5431}
5432
5433static void kbdlight_resume(void)
5434{
5435 if (!tp_features.kbdlight)
5436 return;
5437
5438 led_classdev_resume(&tpacpi_led_kbdlight.led_classdev);
bb28f3d5
PR		 5439}
5440
5441static struct ibm_struct kbdlight_driver_data = {
5442 .name = "kbdlight",
5443 .read = kbdlight_read,
5444 .write = kbdlight_write,
afcedebc
MTT		 5445 .suspend = kbdlight_suspend,
5446 .resume = kbdlight_resume,
bb28f3d5
PR		 5447 .exit = kbdlight_exit,
5448};
5449
56b6aeb0
HMH		 5450/*************************************************************************
5451 * Light (thinklight) subdriver
5452 */
1da177e4 5453
e0c7dfe7
HMH		 5454TPACPI_HANDLE(lght, root, "\\LGHT"); /* A21e, A2xm/p, T20-22, X20-21 */
5455TPACPI_HANDLE(ledb, ec, "LEDB"); /* G4x */
56b6aeb0 5456
4fa6811b
HMH		 5457static int light_get_status(void)
5458{
5459 int status = 0;
5460
5461 if (tp_features.light_status) {
5462 if (!acpi_evalf(ec_handle, &status, "KBLT", "d"))
5463 return -EIO;
5464 return (!!status);
5465 }
5466
5467 return -ENXIO;
5468}
5469
5470static int light_set_status(int status)
5471{
5472 int rc;
5473
5474 if (tp_features.light) {
5475 if (cmos_handle) {
5476 rc = acpi_evalf(cmos_handle, NULL, NULL, "vd",
72a979f0 5477 (status) ?
4fa6811b
HMH		 5478 TP_CMOS_THINKLIGHT_ON :
5479 TP_CMOS_THINKLIGHT_OFF);
5480 } else {
5481 rc = acpi_evalf(lght_handle, NULL, NULL, "vd",
72a979f0 5482 (status) ? 1 : 0);
4fa6811b 5483 }
72a979f0 5484 return (rc) ? 0 : -EIO;
4fa6811b
HMH		 5485 }
5486
5487 return -ENXIO;
5488}
5489
86ec0c2c 5490static int light_sysfs_set(struct led_classdev *led_cdev,
e306501d
HMH		 5491 enum led_brightness brightness)
5492{
86ec0c2c
HG		 5493 return light_set_status((brightness != LED_OFF) ?
5494 TPACPI_LED_ON : TPACPI_LED_OFF);
e306501d
HMH		 5495}
5496
5497static enum led_brightness light_sysfs_get(struct led_classdev *led_cdev)
5498{
72a979f0 5499 return (light_get_status() == 1) ? LED_FULL : LED_OFF;
e306501d
HMH		 5500}
5501
5502static struct tpacpi_led_classdev tpacpi_led_thinklight = {
5503 .led_classdev = {
5504 .name = "tpacpi::thinklight",
86ec0c2c 5505 .brightness_set_blocking = &light_sysfs_set,
e306501d
HMH		 5506 .brightness_get = &light_sysfs_get,
5507 }
5508};
5509
a5763f22 5510static int __init light_init(struct ibm_init_struct *iibm)
1da177e4 5511{
9c0a76e1 5512 int rc;
e306501d 5513
fe08bc4b
HMH		 5514 vdbg_printk(TPACPI_DBG_INIT, "initializing light subdriver\n");
5515
e28393c0
HMH		 5516 if (tpacpi_is_ibm()) {
5517 TPACPI_ACPIHANDLE_INIT(ledb);
5518 TPACPI_ACPIHANDLE_INIT(lght);
5519 }
e0c7dfe7 5520 TPACPI_ACPIHANDLE_INIT(cmos);
5fba344c 5521
78f81cc4 5522 /* light not supported on 570, 600e/x, 770e, 770x, G4x, R30, R31 */
d8fd94d9 5523 tp_features.light = (cmos_handle || lght_handle) && !ledb_handle;
78f81cc4 5524
d8fd94d9 5525 if (tp_features.light)
78f81cc4
BD		 5526 /* light status not supported on
5527 570, 600e/x, 770e, 770x, G4x, R30, R31, R32, X20 */
d8fd94d9
HMH		 5528 tp_features.light_status =
5529 acpi_evalf(ec_handle, NULL, "KBLT", "qv");
1da177e4 5530
9c0a76e1
HMH		 5531 vdbg_printk(TPACPI_DBG_INIT, "light is %s, light status is %s\n",
5532 str_supported(tp_features.light),
5533 str_supported(tp_features.light_status));
fe08bc4b 5534
9c0a76e1
HMH		 5535 if (!tp_features.light)
5536 return 1;
5537
5538 rc = led_classdev_register(&tpacpi_pdev->dev,
5539 &tpacpi_led_thinklight.led_classdev);
e306501d
HMH		 5540
5541 if (rc < 0) {
5542 tp_features.light = 0;
5543 tp_features.light_status = 0;
9c0a76e1
HMH		 5544 } else {
5545 rc = 0;
e306501d 5546 }
9c0a76e1 5547
e306501d
HMH		 5548 return rc;
5549}
5550
5551static void light_exit(void)
5552{
5553 led_classdev_unregister(&tpacpi_led_thinklight.led_classdev);
1da177e4
LT		 5554}
5555
887965e6 5556static int light_read(struct seq_file *m)
1da177e4 5557{
4fa6811b 5558 int status;
1da177e4 5559
d8fd94d9 5560 if (!tp_features.light) {
887965e6 5561 seq_printf(m, "status:\t\tnot supported\n");
d8fd94d9 5562 } else if (!tp_features.light_status) {
887965e6
AD		 5563 seq_printf(m, "status:\t\tunknown\n");
5564 seq_printf(m, "commands:\ton, off\n");
78f81cc4 5565 } else {
4fa6811b
HMH		 5566 status = light_get_status();
5567 if (status < 0)
5568 return status;
887965e6
AD		 5569 seq_printf(m, "status:\t\t%s\n", onoff(status, 0));
5570 seq_printf(m, "commands:\ton, off\n");
78f81cc4 5571 }
1da177e4 5572
887965e6 5573 return 0;
1da177e4
LT		 5574}
5575
78f81cc4 5576static int light_write(char *buf)
1da177e4 5577{
1da177e4 5578 char *cmd;
4fa6811b 5579 int newstatus = 0;
78f81cc4 5580
d8fd94d9 5581 if (!tp_features.light)
78f81cc4
BD		 5582 return -ENODEV;
5583
1da177e4
LT		 5584 while ((cmd = next_cmd(&buf))) {
5585 if (strlencmp(cmd, "on") == 0) {
4fa6811b 5586 newstatus = 1;
1da177e4 5587 } else if (strlencmp(cmd, "off") == 0) {
4fa6811b 5588 newstatus = 0;
1da177e4
LT		 5589 } else
5590 return -EINVAL;
1da177e4
LT		 5591 }
5592
4fa6811b 5593 return light_set_status(newstatus);
1da177e4
LT		 5594}
5595
a5763f22
HMH		 5596static struct ibm_struct light_driver_data = {
5597 .name = "light",
5598 .read = light_read,
5599 .write = light_write,
e306501d 5600 .exit = light_exit,
a5763f22
HMH		 5601};
5602
56b6aeb0
HMH		 5603/*************************************************************************
5604 * CMOS subdriver
5605 */
5606
b616004c
HMH		 5607/* sysfs cmos_command -------------------------------------------------- */
5608static ssize_t cmos_command_store(struct device *dev,
5609 struct device_attribute *attr,
5610 const char *buf, size_t count)
5611{
5612 unsigned long cmos_cmd;
5613 int res;
5614
5615 if (parse_strtoul(buf, 21, &cmos_cmd))
5616 return -EINVAL;
5617
5618 res = issue_thinkpad_cmos_command(cmos_cmd);
72a979f0 5619 return (res) ? res : count;
b616004c
HMH		 5620}
5621
b4dd04ac 5622static DEVICE_ATTR_WO(cmos_command);
b616004c
HMH		 5623
5624/* --------------------------------------------------------------------- */
5625
a5763f22 5626static int __init cmos_init(struct ibm_init_struct *iibm)
5fba344c 5627{
b616004c
HMH		 5628 int res;
5629
fe08bc4b
HMH		 5630 vdbg_printk(TPACPI_DBG_INIT,
5631 "initializing cmos commands subdriver\n");
5632
e0c7dfe7 5633 TPACPI_ACPIHANDLE_INIT(cmos);
5fba344c 5634
fe08bc4b
HMH		 5635 vdbg_printk(TPACPI_DBG_INIT, "cmos commands are %s\n",
5636 str_supported(cmos_handle != NULL));
b616004c
HMH		 5637
5638 res = device_create_file(&tpacpi_pdev->dev, &dev_attr_cmos_command);
5639 if (res)
5640 return res;
5641
72a979f0 5642 return (cmos_handle) ? 0 : 1;
5fba344c
HMH		 5643}
5644
b616004c
HMH		 5645static void cmos_exit(void)
5646{
5647 device_remove_file(&tpacpi_pdev->dev, &dev_attr_cmos_command);
5648}
5649
887965e6 5650static int cmos_read(struct seq_file *m)
1da177e4 5651{
78f81cc4
BD		 5652 /* cmos not supported on 570, 600e/x, 770e, 770x, A21e, A2xm/p,
5653 R30, R31, T20-22, X20-21 */
1da177e4 5654 if (!cmos_handle)
887965e6 5655 seq_printf(m, "status:\t\tnot supported\n");
1da177e4 5656 else {
887965e6
AD		 5657 seq_printf(m, "status:\t\tsupported\n");
5658 seq_printf(m, "commands:\t<cmd> (<cmd> is 0-21)\n");
1da177e4
LT		 5659 }
5660
887965e6 5661 return 0;
1da177e4
LT		 5662}
5663
78f81cc4 5664static int cmos_write(char *buf)
1da177e4
LT		 5665{
5666 char *cmd;
c9bea99c 5667 int cmos_cmd, res;
1da177e4
LT		 5668
5669 while ((cmd = next_cmd(&buf))) {
78f81cc4
BD		 5670 if (sscanf(cmd, "%u", &cmos_cmd) == 1 &&
5671 cmos_cmd >= 0 && cmos_cmd <= 21) {
1da177e4
LT		 5672 /* cmos_cmd set */
5673 } else
5674 return -EINVAL;
5675
c9bea99c
HMH		 5676 res = issue_thinkpad_cmos_command(cmos_cmd);
5677 if (res)
5678 return res;
1da177e4
LT		 5679 }
5680
5681 return 0;
78f81cc4
BD		 5682}
5683
a5763f22
HMH		 5684static struct ibm_struct cmos_driver_data = {
5685 .name = "cmos",
5686 .read = cmos_read,
5687 .write = cmos_write,
b616004c 5688 .exit = cmos_exit,
a5763f22 5689};
56b6aeb0
HMH		 5690
5691/*************************************************************************
5692 * LED subdriver
5693 */
5694
f74a27d4
HMH		 5695enum led_access_mode {
5696 TPACPI_LED_NONE = 0,
5697 TPACPI_LED_570, /* 570 */
5698 TPACPI_LED_OLD, /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20-21 */
5699 TPACPI_LED_NEW, /* all others */
5700};
5701
5702enum { /* For TPACPI_LED_OLD */
5703 TPACPI_LED_EC_HLCL = 0x0c, /* EC reg to get led to power on */
5704 TPACPI_LED_EC_HLBL = 0x0d, /* EC reg to blink a lit led */
5705 TPACPI_LED_EC_HLMS = 0x0e, /* EC reg to select led to command */
5706};
5707
9a8e1738 5708static enum led_access_mode led_supported;
78f81cc4 5709
2cbb5c8f 5710static acpi_handle led_handle;
56b6aeb0 5711
f21179a4 5712#define TPACPI_LED_NUMLEDS 16
af116101
HMH		 5713static struct tpacpi_led_classdev *tpacpi_leds;
5714static enum led_status_t tpacpi_led_state_cache[TPACPI_LED_NUMLEDS];
e3aa51fe 5715static const char * const tpacpi_led_names[TPACPI_LED_NUMLEDS] = {
af116101
HMH		 5716 /* there's a limit of 19 chars + NULL before 2.6.26 */
5717 "tpacpi::power",
5718 "tpacpi:orange:batt",
5719 "tpacpi:green:batt",
5720 "tpacpi::dock_active",
5721 "tpacpi::bay_active",
5722 "tpacpi::dock_batt",
5723 "tpacpi::unknown_led",
5724 "tpacpi::standby",
f21179a4
HMH		 5725 "tpacpi::dock_status1",
5726 "tpacpi::dock_status2",
5727 "tpacpi::unknown_led2",
5728 "tpacpi::unknown_led3",
5729 "tpacpi::thinkvantage",
af116101 5730};
f21179a4 5731#define TPACPI_SAFE_LEDS 0x1081U
a4d5effc
HMH		 5732
5733static inline bool tpacpi_is_led_restricted(const unsigned int led)
5734{
5735#ifdef CONFIG_THINKPAD_ACPI_UNSAFE_LEDS
5736 return false;
5737#else
f21179a4 5738 return (1U & (TPACPI_SAFE_LEDS >> led)) == 0;
a4d5effc
HMH		 5739#endif
5740}
af116101 5741
24e45bbe 5742static int led_get_status(const unsigned int led)
4fa6811b
HMH		 5743{
5744 int status;
af116101 5745 enum led_status_t led_s;
4fa6811b
HMH		 5746
5747 switch (led_supported) {
5748 case TPACPI_LED_570:
5749 if (!acpi_evalf(ec_handle,
5750 &status, "GLED", "dd", 1 << led))
5751 return -EIO;
72a979f0 5752 led_s = (status == 0) ?
4fa6811b 5753 TPACPI_LED_OFF :
72a979f0 5754 ((status == 1) ?
4fa6811b
HMH		 5755 TPACPI_LED_ON :
5756 TPACPI_LED_BLINK);
af116101
HMH		 5757 tpacpi_led_state_cache[led] = led_s;
5758 return led_s;
4fa6811b
HMH		 5759 default:
5760 return -ENXIO;
5761 }
5762
5763 /* not reached */
5764}
5765
24e45bbe
HMH		 5766static int led_set_status(const unsigned int led,
5767 const enum led_status_t ledstatus)
4fa6811b
HMH		 5768{
5769 /* off, on, blink. Index is led_status_t */
24e45bbe
HMH		 5770 static const unsigned int led_sled_arg1[] = { 0, 1, 3 };
5771 static const unsigned int led_led_arg1[] = { 0, 0x80, 0xc0 };
4fa6811b
HMH		 5772
5773 int rc = 0;
5774
5775 switch (led_supported) {
5776 case TPACPI_LED_570:
24e45bbe 5777 /* 570 */
a4d5effc 5778 if (unlikely(led > 7))
24e45bbe 5779 return -EINVAL;
a4d5effc
HMH		 5780 if (unlikely(tpacpi_is_led_restricted(led)))
5781 return -EPERM;
24e45bbe
HMH		 5782 if (!acpi_evalf(led_handle, NULL, NULL, "vdd",
5783 (1 << led), led_sled_arg1[ledstatus]))
5784 rc = -EIO;
5785 break;
4fa6811b 5786 case TPACPI_LED_OLD:
24e45bbe 5787 /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20 */
a4d5effc 5788 if (unlikely(led > 7))
24e45bbe 5789 return -EINVAL;
a4d5effc
HMH		 5790 if (unlikely(tpacpi_is_led_restricted(led)))
5791 return -EPERM;
24e45bbe
HMH		 5792 rc = ec_write(TPACPI_LED_EC_HLMS, (1 << led));
5793 if (rc >= 0)
5794 rc = ec_write(TPACPI_LED_EC_HLBL,
5795 (ledstatus == TPACPI_LED_BLINK) << led);
5796 if (rc >= 0)
5797 rc = ec_write(TPACPI_LED_EC_HLCL,
5798 (ledstatus != TPACPI_LED_OFF) << led);
5799 break;
4fa6811b 5800 case TPACPI_LED_NEW:
24e45bbe 5801 /* all others */
a4d5effc
HMH		 5802 if (unlikely(led >= TPACPI_LED_NUMLEDS))
5803 return -EINVAL;
5804 if (unlikely(tpacpi_is_led_restricted(led)))
5805 return -EPERM;
24e45bbe
HMH		 5806 if (!acpi_evalf(led_handle, NULL, NULL, "vdd",
5807 led, led_led_arg1[ledstatus]))
5808 rc = -EIO;
5809 break;
4fa6811b
HMH		 5810 default:
5811 rc = -ENXIO;
5812 }
5813
af116101
HMH		 5814 if (!rc)
5815 tpacpi_led_state_cache[led] = ledstatus;
5816
5817 return rc;
5818}
5819
86ec0c2c 5820static int led_sysfs_set(struct led_classdev *led_cdev,
af116101
HMH		 5821 enum led_brightness brightness)
5822{
5823 struct tpacpi_led_classdev *data = container_of(led_cdev,
5824 struct tpacpi_led_classdev, led_classdev);
86ec0c2c 5825 enum led_status_t new_state;
af116101 5826
75bd3bf2 5827 if (brightness == LED_OFF)
86ec0c2c 5828 new_state = TPACPI_LED_OFF;
75bd3bf2 5829 else if (tpacpi_led_state_cache[data->led] != TPACPI_LED_BLINK)
86ec0c2c 5830 new_state = TPACPI_LED_ON;
75bd3bf2 5831 else
86ec0c2c 5832 new_state = TPACPI_LED_BLINK;
75bd3bf2 5833
86ec0c2c 5834 return led_set_status(data->led, new_state);
af116101
HMH		 5835}
5836
5837static int led_sysfs_blink_set(struct led_classdev *led_cdev,
5838 unsigned long *delay_on, unsigned long *delay_off)
5839{
5840 struct tpacpi_led_classdev *data = container_of(led_cdev,
5841 struct tpacpi_led_classdev, led_classdev);
5842
5843 /* Can we choose the flash rate? */
5844 if (*delay_on == 0 && *delay_off == 0) {
5845 /* yes. set them to the hardware blink rate (1 Hz) */
5846 *delay_on = 500; /* ms */
5847 *delay_off = 500; /* ms */
5848 } else if ((*delay_on != 500) || (*delay_off != 500))
5849 return -EINVAL;
5850
86ec0c2c 5851 return led_set_status(data->led, TPACPI_LED_BLINK);
af116101
HMH		 5852}
5853
5854static enum led_brightness led_sysfs_get(struct led_classdev *led_cdev)
5855{
5856 int rc;
5857
5858 struct tpacpi_led_classdev *data = container_of(led_cdev,
5859 struct tpacpi_led_classdev, led_classdev);
5860
5861 rc = led_get_status(data->led);
5862
5863 if (rc == TPACPI_LED_OFF || rc < 0)
5864 rc = LED_OFF; /* no error handling in led class :( */
5865 else
5866 rc = LED_FULL;
5867
4fa6811b
HMH		 5868 return rc;
5869}
5870
af116101
HMH		 5871static void led_exit(void)
5872{
5873 unsigned int i;
5874
5875 for (i = 0; i < TPACPI_LED_NUMLEDS; i++) {
5876 if (tpacpi_leds[i].led_classdev.name)
5877 led_classdev_unregister(&tpacpi_leds[i].led_classdev);
5878 }
5879
5880 kfree(tpacpi_leds);
af116101
HMH		 5881}
5882
a4d5effc
HMH		 5883static int __init tpacpi_init_led(unsigned int led)
5884{
5885 int rc;
5886
5887 tpacpi_leds[led].led = led;
5888
f21179a4
HMH		 5889 /* LEDs with no name don't get registered */
5890 if (!tpacpi_led_names[led])
5891 return 0;
5892
86ec0c2c 5893 tpacpi_leds[led].led_classdev.brightness_set_blocking = &led_sysfs_set;
a4d5effc
HMH		 5894 tpacpi_leds[led].led_classdev.blink_set = &led_sysfs_blink_set;
5895 if (led_supported == TPACPI_LED_570)
5896 tpacpi_leds[led].led_classdev.brightness_get =
5897 &led_sysfs_get;
5898
5899 tpacpi_leds[led].led_classdev.name = tpacpi_led_names[led];
5900
a4d5effc
HMH		 5901 rc = led_classdev_register(&tpacpi_pdev->dev,
5902 &tpacpi_leds[led].led_classdev);
5903 if (rc < 0)
5904 tpacpi_leds[led].led_classdev.name = NULL;
5905
5906 return rc;
5907}
5908
f21179a4
HMH		 5909static const struct tpacpi_quirk led_useful_qtable[] __initconst = {
5910 TPACPI_Q_IBM('1', 'E', 0x009f), /* A30 */
5911 TPACPI_Q_IBM('1', 'N', 0x009f), /* A31 */
5912 TPACPI_Q_IBM('1', 'G', 0x009f), /* A31 */
5913
5914 TPACPI_Q_IBM('1', 'I', 0x0097), /* T30 */
5915 TPACPI_Q_IBM('1', 'R', 0x0097), /* T40, T41, T42, R50, R51 */
5916 TPACPI_Q_IBM('7', '0', 0x0097), /* T43, R52 */
5917 TPACPI_Q_IBM('1', 'Y', 0x0097), /* T43 */
5918 TPACPI_Q_IBM('1', 'W', 0x0097), /* R50e */
5919 TPACPI_Q_IBM('1', 'V', 0x0097), /* R51 */
5920 TPACPI_Q_IBM('7', '8', 0x0097), /* R51e */
5921 TPACPI_Q_IBM('7', '6', 0x0097), /* R52 */
5922
5923 TPACPI_Q_IBM('1', 'K', 0x00bf), /* X30 */
5924 TPACPI_Q_IBM('1', 'Q', 0x00bf), /* X31, X32 */
5925 TPACPI_Q_IBM('1', 'U', 0x00bf), /* X40 */
5926 TPACPI_Q_IBM('7', '4', 0x00bf), /* X41 */
5927 TPACPI_Q_IBM('7', '5', 0x00bf), /* X41t */
5928
5929 TPACPI_Q_IBM('7', '9', 0x1f97), /* T60 (1) */
5930 TPACPI_Q_IBM('7', '7', 0x1f97), /* Z60* (1) */
5931 TPACPI_Q_IBM('7', 'F', 0x1f97), /* Z61* (1) */
5932 TPACPI_Q_IBM('7', 'B', 0x1fb7), /* X60 (1) */
5933
5934 /* (1) - may have excess leds enabled on MSB */
5935
5936 /* Defaults (order matters, keep last, don't reorder!) */
5937 { /* Lenovo */
5938 .vendor = PCI_VENDOR_ID_LENOVO,
5939 .bios = TPACPI_MATCH_ANY, .ec = TPACPI_MATCH_ANY,
5940 .quirks = 0x1fffU,
5941 },
5942 { /* IBM ThinkPads with no EC version string */
5943 .vendor = PCI_VENDOR_ID_IBM,
5944 .bios = TPACPI_MATCH_ANY, .ec = TPACPI_MATCH_UNKNOWN,
5945 .quirks = 0x00ffU,
5946 },
5947 { /* IBM ThinkPads with EC version string */
5948 .vendor = PCI_VENDOR_ID_IBM,
5949 .bios = TPACPI_MATCH_ANY, .ec = TPACPI_MATCH_ANY,
5950 .quirks = 0x00bfU,
5951 },
5952};
5953
5954#undef TPACPI_LEDQ_IBM
5955#undef TPACPI_LEDQ_LNV
5956
2cbb5c8f
HMH		 5957static enum led_access_mode __init led_init_detect_mode(void)
5958{
5959 acpi_status status;
5960
5961 if (tpacpi_is_ibm()) {
5962 /* 570 */
5963 status = acpi_get_handle(ec_handle, "SLED", &led_handle);
5964 if (ACPI_SUCCESS(status))
5965 return TPACPI_LED_570;
5966
5967 /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20-21 */
5968 status = acpi_get_handle(ec_handle, "SYSL", &led_handle);
5969 if (ACPI_SUCCESS(status))
5970 return TPACPI_LED_OLD;
5971 }
5972
5973 /* most others */
5974 status = acpi_get_handle(ec_handle, "LED", &led_handle);
5975 if (ACPI_SUCCESS(status))
5976 return TPACPI_LED_NEW;
5977
5978 /* R30, R31, and unknown firmwares */
5979 led_handle = NULL;
5980 return TPACPI_LED_NONE;
5981}
5982
a5763f22 5983static int __init led_init(struct ibm_init_struct *iibm)
78f81cc4 5984{
af116101
HMH		 5985 unsigned int i;
5986 int rc;
f21179a4 5987 unsigned long useful_leds;
af116101 5988
fe08bc4b
HMH		 5989 vdbg_printk(TPACPI_DBG_INIT, "initializing LED subdriver\n");
5990
2cbb5c8f 5991 led_supported = led_init_detect_mode();
78f81cc4 5992
fcb44e12
AL		 5993 if (led_supported != TPACPI_LED_NONE) {
5994 useful_leds = tpacpi_check_quirks(led_useful_qtable,
5995 ARRAY_SIZE(led_useful_qtable));
5996
5997 if (!useful_leds) {
5998 led_handle = NULL;
5999 led_supported = TPACPI_LED_NONE;
6000 }
6001 }
6002
fe08bc4b
HMH		 6003 vdbg_printk(TPACPI_DBG_INIT, "LED commands are %s, mode %d\n",
6004 str_supported(led_supported), led_supported);
6005
f21179a4
HMH		 6006 if (led_supported == TPACPI_LED_NONE)
6007 return 1;
6008
6396bb22 6009 tpacpi_leds = kcalloc(TPACPI_LED_NUMLEDS, sizeof(*tpacpi_leds),
af116101
HMH		 6010 GFP_KERNEL);
6011 if (!tpacpi_leds) {
0978e012 6012 pr_err("Out of memory for LED data\n");
af116101
HMH		 6013 return -ENOMEM;
6014 }
6015
6016 for (i = 0; i < TPACPI_LED_NUMLEDS; i++) {
edf2d778
AL		 6017 tpacpi_leds[i].led = -1;
6018
f21179a4
HMH		 6019 if (!tpacpi_is_led_restricted(i) &&
6020 test_bit(i, &useful_leds)) {
a4d5effc
HMH		 6021 rc = tpacpi_init_led(i);
6022 if (rc < 0) {
6023 led_exit();
6024 return rc;
6025 }
af116101
HMH		 6026 }
6027 }
6028
a4d5effc 6029#ifdef CONFIG_THINKPAD_ACPI_UNSAFE_LEDS
5cac62ac 6030 pr_notice("warning: userspace override of important firmware LEDs is enabled\n");
a4d5effc 6031#endif
f21179a4 6032 return 0;
78f81cc4
BD		 6033}
6034
4fa6811b
HMH		 6035#define str_led_status(s) \
6036 ((s) == TPACPI_LED_OFF ? "off" : \
6037 ((s) == TPACPI_LED_ON ? "on" : "blinking"))
78f81cc4 6038
887965e6 6039static int led_read(struct seq_file *m)
1da177e4 6040{
78f81cc4 6041 if (!led_supported) {
887965e6
AD		 6042 seq_printf(m, "status:\t\tnot supported\n");
6043 return 0;
78f81cc4 6044 }
887965e6 6045 seq_printf(m, "status:\t\tsupported\n");
78f81cc4 6046
efa27145 6047 if (led_supported == TPACPI_LED_570) {
78f81cc4
BD		 6048 /* 570 */
6049 int i, status;
6050 for (i = 0; i < 8; i++) {
4fa6811b
HMH		 6051 status = led_get_status(i);
6052 if (status < 0)
78f81cc4 6053 return -EIO;
887965e6 6054 seq_printf(m, "%d:\t\t%s\n",
4fa6811b 6055 i, str_led_status(status));
78f81cc4
BD		 6056 }
6057 }
6058
5cac62ac 6059 seq_printf(m, "commands:\t<led> on, <led> off, <led> blink (<led> is 0-15)\n");
1da177e4 6060
887965e6 6061 return 0;
1da177e4
LT		 6062}
6063
78f81cc4 6064static int led_write(char *buf)
1da177e4
LT		 6065{
6066 char *cmd;
4fa6811b
HMH		 6067 int led, rc;
6068 enum led_status_t s;
78f81cc4
BD		 6069
6070 if (!led_supported)
6071 return -ENODEV;
1da177e4
LT		 6072
6073 while ((cmd = next_cmd(&buf))) {
edf2d778 6074 if (sscanf(cmd, "%d", &led) != 1)
1da177e4
LT		 6075 return -EINVAL;
6076
edf2d778
AL		 6077 if (led < 0 || led > (TPACPI_LED_NUMLEDS - 1) ||
6078 tpacpi_leds[led].led < 0)
6079 return -ENODEV;
6080
78f81cc4 6081 if (strstr(cmd, "off")) {
4fa6811b 6082 s = TPACPI_LED_OFF;
1da177e4 6083 } else if (strstr(cmd, "on")) {
4fa6811b 6084 s = TPACPI_LED_ON;
78f81cc4 6085 } else if (strstr(cmd, "blink")) {
4fa6811b 6086 s = TPACPI_LED_BLINK;
78f81cc4 6087 } else {
4fa6811b 6088 return -EINVAL;
78f81cc4 6089 }
4fa6811b
HMH		 6090
6091 rc = led_set_status(led, s);
6092 if (rc < 0)
6093 return rc;
78f81cc4
BD		 6094 }
6095
6096 return 0;
6097}
6098
a5763f22
HMH		 6099static struct ibm_struct led_driver_data = {
6100 .name = "led",
6101 .read = led_read,
6102 .write = led_write,
af116101 6103 .exit = led_exit,
a5763f22
HMH		 6104};
6105
56b6aeb0
HMH		 6106/*************************************************************************
6107 * Beep subdriver
6108 */
6109
e0c7dfe7 6110TPACPI_HANDLE(beep, ec, "BEEP"); /* all except R30, R31 */
56b6aeb0 6111
60201732
HMH		 6112#define TPACPI_BEEP_Q1 0x0001
6113
6114static const struct tpacpi_quirk beep_quirk_table[] __initconst = {
6115 TPACPI_Q_IBM('I', 'M', TPACPI_BEEP_Q1), /* 570 */
6116 TPACPI_Q_IBM('I', 'U', TPACPI_BEEP_Q1), /* 570E - unverified */
6117};
6118
a5763f22 6119static int __init beep_init(struct ibm_init_struct *iibm)
5fba344c 6120{
60201732
HMH		 6121 unsigned long quirks;
6122
fe08bc4b
HMH		 6123 vdbg_printk(TPACPI_DBG_INIT, "initializing beep subdriver\n");
6124
e0c7dfe7 6125 TPACPI_ACPIHANDLE_INIT(beep);
5fba344c 6126
fe08bc4b
HMH		 6127 vdbg_printk(TPACPI_DBG_INIT, "beep is %s\n",
6128 str_supported(beep_handle != NULL));
6129
60201732
HMH		 6130 quirks = tpacpi_check_quirks(beep_quirk_table,
6131 ARRAY_SIZE(beep_quirk_table));
6132
6133 tp_features.beep_needs_two_args = !!(quirks & TPACPI_BEEP_Q1);
6134
72a979f0 6135 return (beep_handle) ? 0 : 1;
5fba344c
HMH		 6136}
6137
887965e6 6138static int beep_read(struct seq_file *m)
78f81cc4 6139{
78f81cc4 6140 if (!beep_handle)
887965e6 6141 seq_printf(m, "status:\t\tnot supported\n");
78f81cc4 6142 else {
887965e6
AD		 6143 seq_printf(m, "status:\t\tsupported\n");
6144 seq_printf(m, "commands:\t<cmd> (<cmd> is 0-17)\n");
78f81cc4
BD		 6145 }
6146
887965e6 6147 return 0;
78f81cc4
BD		 6148}
6149
6150static int beep_write(char *buf)
6151{
6152 char *cmd;
6153 int beep_cmd;
6154
6155 if (!beep_handle)
6156 return -ENODEV;
6157
6158 while ((cmd = next_cmd(&buf))) {
6159 if (sscanf(cmd, "%u", &beep_cmd) == 1 &&
6160 beep_cmd >= 0 && beep_cmd <= 17) {
6161 /* beep_cmd set */
6162 } else
6163 return -EINVAL;
60201732
HMH		 6164 if (tp_features.beep_needs_two_args) {
6165 if (!acpi_evalf(beep_handle, NULL, NULL, "vdd",
6166 beep_cmd, 0))
6167 return -EIO;
6168 } else {
6169 if (!acpi_evalf(beep_handle, NULL, NULL, "vd",
6170 beep_cmd))
6171 return -EIO;
6172 }
78f81cc4
BD		 6173 }
6174
6175 return 0;
6176}
6177
a5763f22
HMH		 6178static struct ibm_struct beep_driver_data = {
6179 .name = "beep",
6180 .read = beep_read,
6181 .write = beep_write,
6182};
6183
56b6aeb0
HMH		 6184/*************************************************************************
6185 * Thermal subdriver
6186 */
78f81cc4 6187
f74a27d4
HMH		 6188enum thermal_access_mode {
6189 TPACPI_THERMAL_NONE = 0, /* No thermal support */
6190 TPACPI_THERMAL_ACPI_TMP07, /* Use ACPI TMP0-7 */
6191 TPACPI_THERMAL_ACPI_UPDT, /* Use ACPI TMP0-7 with UPDT */
6192 TPACPI_THERMAL_TPEC_8, /* Use ACPI EC regs, 8 sensors */
6193 TPACPI_THERMAL_TPEC_16, /* Use ACPI EC regs, 16 sensors */
6194};
6195
6196enum { /* TPACPI_THERMAL_TPEC_* */
6197 TP_EC_THERMAL_TMP0 = 0x78, /* ACPI EC regs TMP 0..7 */
6198 TP_EC_THERMAL_TMP8 = 0xC0, /* ACPI EC regs TMP 8..15 */
6199 TP_EC_THERMAL_TMP_NA = -128, /* ACPI EC sensor not available */
9ebd9e83
HMH		 6200
6201 TPACPI_THERMAL_SENSOR_NA = -128000, /* Sensor not available */
f74a27d4
HMH		 6202};
6203
9ebd9e83 6204
f74a27d4
HMH		 6205#define TPACPI_MAX_THERMAL_SENSORS 16 /* Max thermal sensors supported */
6206struct ibm_thermal_sensors_struct {
6207 s32 temp[TPACPI_MAX_THERMAL_SENSORS];
6208};
6209
a26f878a 6210static enum thermal_access_mode thermal_read_mode;
78f81cc4 6211
b21a15f6
HMH		 6212/* idx is zero-based */
6213static int thermal_get_sensor(int idx, s32 *value)
6214{
6215 int t;
6216 s8 tmp;
6217 char tmpi[5];
6218
6219 t = TP_EC_THERMAL_TMP0;
6220
6221 switch (thermal_read_mode) {
6222#if TPACPI_MAX_THERMAL_SENSORS >= 16
6223 case TPACPI_THERMAL_TPEC_16:
6224 if (idx >= 8 && idx <= 15) {
6225 t = TP_EC_THERMAL_TMP8;
6226 idx -= 8;
6227 }
6228 /* fallthrough */
6229#endif
6230 case TPACPI_THERMAL_TPEC_8:
6231 if (idx <= 7) {
6232 if (!acpi_ec_read(t + idx, &tmp))
6233 return -EIO;
6234 *value = tmp * 1000;
6235 return 0;
6236 }
6237 break;
6238
6239 case TPACPI_THERMAL_ACPI_UPDT:
6240 if (idx <= 7) {
6241 snprintf(tmpi, sizeof(tmpi), "TMP%c", '0' + idx);
6242 if (!acpi_evalf(ec_handle, NULL, "UPDT", "v"))
6243 return -EIO;
6244 if (!acpi_evalf(ec_handle, &t, tmpi, "d"))
6245 return -EIO;
6246 *value = (t - 2732) * 100;
6247 return 0;
6248 }
6249 break;
6250
6251 case TPACPI_THERMAL_ACPI_TMP07:
6252 if (idx <= 7) {
6253 snprintf(tmpi, sizeof(tmpi), "TMP%c", '0' + idx);
6254 if (!acpi_evalf(ec_handle, &t, tmpi, "d"))
6255 return -EIO;
6256 if (t > 127 || t < -127)
6257 t = TP_EC_THERMAL_TMP_NA;
6258 *value = t * 1000;
6259 return 0;
6260 }
6261 break;
6262
6263 case TPACPI_THERMAL_NONE:
6264 default:
6265 return -ENOSYS;
6266 }
6267
6268 return -EINVAL;
6269}
6270
6271static int thermal_get_sensors(struct ibm_thermal_sensors_struct *s)
6272{
6273 int res, i;
6274 int n;
6275
6276 n = 8;
6277 i = 0;
6278
6279 if (!s)
6280 return -EINVAL;
6281
6282 if (thermal_read_mode == TPACPI_THERMAL_TPEC_16)
6283 n = 16;
6284
35ff8b9f 6285 for (i = 0 ; i < n; i++) {
b21a15f6
HMH		 6286 res = thermal_get_sensor(i, &s->temp[i]);
6287 if (res)
6288 return res;
6289 }
6290
6291 return n;
6292}
f74a27d4 6293
9ebd9e83
HMH		 6294static void thermal_dump_all_sensors(void)
6295{
6296 int n, i;
6297 struct ibm_thermal_sensors_struct t;
6298
6299 n = thermal_get_sensors(&t);
6300 if (n <= 0)
6301 return;
6302
0978e012 6303 pr_notice("temperatures (Celsius):");
9ebd9e83
HMH		 6304
6305 for (i = 0; i < n; i++) {
6306 if (t.temp[i] != TPACPI_THERMAL_SENSOR_NA)
0978e012 6307 pr_cont(" %d", (int)(t.temp[i] / 1000));
9ebd9e83 6308 else
0978e012 6309 pr_cont(" N/A");
9ebd9e83
HMH		 6310 }
6311
0978e012 6312 pr_cont("\n");
9ebd9e83
HMH		 6313}
6314
2c37aa4e
HMH		 6315/* sysfs temp##_input -------------------------------------------------- */
6316
6317static ssize_t thermal_temp_input_show(struct device *dev,
6318 struct device_attribute *attr,
6319 char *buf)
6320{
6321 struct sensor_device_attribute *sensor_attr =
6322 to_sensor_dev_attr(attr);
6323 int idx = sensor_attr->index;
6324 s32 value;
6325 int res;
6326
6327 res = thermal_get_sensor(idx, &value);
6328 if (res)
6329 return res;
9ebd9e83 6330 if (value == TPACPI_THERMAL_SENSOR_NA)
2c37aa4e
HMH		 6331 return -ENXIO;
6332
6333 return snprintf(buf, PAGE_SIZE, "%d\n", value);
6334}
6335
6336#define THERMAL_SENSOR_ATTR_TEMP(_idxA, _idxB) \
35ff8b9f
HMH		 6337 SENSOR_ATTR(temp##_idxA##_input, S_IRUGO, \
6338 thermal_temp_input_show, NULL, _idxB)
2c37aa4e
HMH		 6339
6340static struct sensor_device_attribute sensor_dev_attr_thermal_temp_input[] = {
6341 THERMAL_SENSOR_ATTR_TEMP(1, 0),
6342 THERMAL_SENSOR_ATTR_TEMP(2, 1),
6343 THERMAL_SENSOR_ATTR_TEMP(3, 2),
6344 THERMAL_SENSOR_ATTR_TEMP(4, 3),
6345 THERMAL_SENSOR_ATTR_TEMP(5, 4),
6346 THERMAL_SENSOR_ATTR_TEMP(6, 5),
6347 THERMAL_SENSOR_ATTR_TEMP(7, 6),
6348 THERMAL_SENSOR_ATTR_TEMP(8, 7),
6349 THERMAL_SENSOR_ATTR_TEMP(9, 8),
6350 THERMAL_SENSOR_ATTR_TEMP(10, 9),
6351 THERMAL_SENSOR_ATTR_TEMP(11, 10),
6352 THERMAL_SENSOR_ATTR_TEMP(12, 11),
6353 THERMAL_SENSOR_ATTR_TEMP(13, 12),
6354 THERMAL_SENSOR_ATTR_TEMP(14, 13),
6355 THERMAL_SENSOR_ATTR_TEMP(15, 14),
6356 THERMAL_SENSOR_ATTR_TEMP(16, 15),
6357};
6358
6359#define THERMAL_ATTRS(X) \
6360 &sensor_dev_attr_thermal_temp_input[X].dev_attr.attr
6361
6362static struct attribute *thermal_temp_input_attr[] = {
6363 THERMAL_ATTRS(8),
6364 THERMAL_ATTRS(9),
6365 THERMAL_ATTRS(10),
6366 THERMAL_ATTRS(11),
6367 THERMAL_ATTRS(12),
6368 THERMAL_ATTRS(13),
6369 THERMAL_ATTRS(14),
6370 THERMAL_ATTRS(15),
6371 THERMAL_ATTRS(0),
6372 THERMAL_ATTRS(1),
6373 THERMAL_ATTRS(2),
6374 THERMAL_ATTRS(3),
6375 THERMAL_ATTRS(4),
6376 THERMAL_ATTRS(5),
6377 THERMAL_ATTRS(6),
6378 THERMAL_ATTRS(7),
6379 NULL
6380};
6381
6382static const struct attribute_group thermal_temp_input16_group = {
6383 .attrs = thermal_temp_input_attr
6384};
6385
6386static const struct attribute_group thermal_temp_input8_group = {
6387 .attrs = &thermal_temp_input_attr[8]
6388};
6389
6390#undef THERMAL_SENSOR_ATTR_TEMP
6391#undef THERMAL_ATTRS
6392
6393/* --------------------------------------------------------------------- */
6394
a5763f22 6395static int __init thermal_init(struct ibm_init_struct *iibm)
78f81cc4 6396{
60eb0b35
HMH		 6397 u8 t, ta1, ta2;
6398 int i;
5fba344c 6399 int acpi_tmp7;
2c37aa4e 6400 int res;
5fba344c 6401
fe08bc4b
HMH		 6402 vdbg_printk(TPACPI_DBG_INIT, "initializing thermal subdriver\n");
6403
5fba344c 6404 acpi_tmp7 = acpi_evalf(ec_handle, NULL, "TMP7", "qv");
60eb0b35 6405
3d6f99ca 6406 if (thinkpad_id.ec_model) {
60eb0b35
HMH		 6407 /*
6408 * Direct EC access mode: sensors at registers
6409 * 0x78-0x7F, 0xC0-0xC7. Registers return 0x00 for
6410 * non-implemented, thermal sensors return 0x80 when
6411 * not available
6412 */
78f81cc4 6413
60eb0b35
HMH		 6414 ta1 = ta2 = 0;
6415 for (i = 0; i < 8; i++) {
04cc862c 6416 if (acpi_ec_read(TP_EC_THERMAL_TMP0 + i, &t)) {
60eb0b35
HMH		 6417 ta1 |= t;
6418 } else {
6419 ta1 = 0;
6420 break;
6421 }
04cc862c 6422 if (acpi_ec_read(TP_EC_THERMAL_TMP8 + i, &t)) {
60eb0b35
HMH		 6423 ta2 |= t;
6424 } else {
6425 ta1 = 0;
6426 break;
6427 }
6428 }
6429 if (ta1 == 0) {
6430 /* This is sheer paranoia, but we handle it anyway */
6431 if (acpi_tmp7) {
5cac62ac 6432 pr_err("ThinkPad ACPI EC access misbehaving, falling back to ACPI TMPx access mode\n");
efa27145 6433 thermal_read_mode = TPACPI_THERMAL_ACPI_TMP07;
60eb0b35 6434 } else {
5cac62ac 6435 pr_err("ThinkPad ACPI EC access misbehaving, disabling thermal sensors access\n");
efa27145 6436 thermal_read_mode = TPACPI_THERMAL_NONE;
60eb0b35
HMH		 6437 }
6438 } else {
6439 thermal_read_mode =
6440 (ta2 != 0) ?
efa27145 6441 TPACPI_THERMAL_TPEC_16 : TPACPI_THERMAL_TPEC_8;
60eb0b35
HMH		 6442 }
6443 } else if (acpi_tmp7) {
e28393c0
HMH		 6444 if (tpacpi_is_ibm() &&
6445 acpi_evalf(ec_handle, NULL, "UPDT", "qv")) {
a26f878a 6446 /* 600e/x, 770e, 770x */
efa27145 6447 thermal_read_mode = TPACPI_THERMAL_ACPI_UPDT;
a26f878a 6448 } else {
e28393c0 6449 /* IBM/LENOVO DSDT EC.TMPx access, max 8 sensors */
efa27145 6450 thermal_read_mode = TPACPI_THERMAL_ACPI_TMP07;
a26f878a
HMH		 6451 }
6452 } else {
6453 /* temperatures not supported on 570, G4x, R30, R31, R32 */
efa27145 6454 thermal_read_mode = TPACPI_THERMAL_NONE;
a26f878a 6455 }
78f81cc4 6456
fe08bc4b
HMH		 6457 vdbg_printk(TPACPI_DBG_INIT, "thermal is %s, mode %d\n",
6458 str_supported(thermal_read_mode != TPACPI_THERMAL_NONE),
6459 thermal_read_mode);
6460
35ff8b9f 6461 switch (thermal_read_mode) {
2c37aa4e 6462 case TPACPI_THERMAL_TPEC_16:
6b99e356 6463 res = sysfs_create_group(&tpacpi_hwmon->kobj,
2c37aa4e
HMH		 6464 &thermal_temp_input16_group);
6465 if (res)
6466 return res;
6467 break;
6468 case TPACPI_THERMAL_TPEC_8:
6469 case TPACPI_THERMAL_ACPI_TMP07:
6470 case TPACPI_THERMAL_ACPI_UPDT:
6b99e356 6471 res = sysfs_create_group(&tpacpi_hwmon->kobj,
2c37aa4e
HMH		 6472 &thermal_temp_input8_group);
6473 if (res)
6474 return res;
6475 break;
6476 case TPACPI_THERMAL_NONE:
6477 default:
6478 return 1;
6479 }
6480
6481 return 0;
6482}
6483
6484static void thermal_exit(void)
6485{
35ff8b9f 6486 switch (thermal_read_mode) {
2c37aa4e 6487 case TPACPI_THERMAL_TPEC_16:
6b99e356 6488 sysfs_remove_group(&tpacpi_hwmon->kobj,
2c37aa4e
HMH		 6489 &thermal_temp_input16_group);
6490 break;
6491 case TPACPI_THERMAL_TPEC_8:
6492 case TPACPI_THERMAL_ACPI_TMP07:
6493 case TPACPI_THERMAL_ACPI_UPDT:
6b99e356 6494 sysfs_remove_group(&tpacpi_hwmon->kobj,
f04d5e01 6495 &thermal_temp_input8_group);
2c37aa4e
HMH		 6496 break;
6497 case TPACPI_THERMAL_NONE:
6498 default:
6499 break;
6500 }
78f81cc4
BD		 6501}
6502
887965e6 6503static int thermal_read(struct seq_file *m)
a26f878a 6504{
a26f878a
HMH		 6505 int n, i;
6506 struct ibm_thermal_sensors_struct t;
6507
6508 n = thermal_get_sensors(&t);
6509 if (unlikely(n < 0))
6510 return n;
6511
887965e6 6512 seq_printf(m, "temperatures:\t");
a26f878a
HMH		 6513
6514 if (n > 0) {
6515 for (i = 0; i < (n - 1); i++)
887965e6
AD		 6516 seq_printf(m, "%d ", t.temp[i] / 1000);
6517 seq_printf(m, "%d\n", t.temp[i] / 1000);
a26f878a 6518 } else
887965e6 6519 seq_printf(m, "not supported\n");
78f81cc4 6520
887965e6 6521 return 0;
78f81cc4
BD		 6522}
6523
a5763f22
HMH		 6524static struct ibm_struct thermal_driver_data = {
6525 .name = "thermal",
6526 .read = thermal_read,
2c37aa4e 6527 .exit = thermal_exit,
a5763f22
HMH		 6528};
6529
56b6aeb0
HMH		 6530/*************************************************************************
6531 * Backlight/brightness subdriver
6532 */
6533
f74a27d4
HMH		 6534#define TPACPI_BACKLIGHT_DEV_NAME "thinkpad_screen"
6535
0e501834
HMH		 6536/*
6537 * ThinkPads can read brightness from two places: EC HBRV (0x31), or
6538 * CMOS NVRAM byte 0x5E, bits 0-3.
6539 *
6540 * EC HBRV (0x31) has the following layout
6541 * Bit 7: unknown function
6542 * Bit 6: unknown function
6543 * Bit 5: Z: honour scale changes, NZ: ignore scale changes
6544 * Bit 4: must be set to zero to avoid problems
6545 * Bit 3-0: backlight brightness level
6546 *
6547 * brightness_get_raw returns status data in the HBRV layout
d7880f10
HMH		 6548 *
6549 * WARNING: The X61 has been verified to use HBRV for something else, so
6550 * this should be used _only_ on IBM ThinkPads, and maybe with some careful
6551 * testing on the very early *60 Lenovo models...
0e501834
HMH		 6552 */
6553
e11aecf1
HMH		 6554enum {
6555 TP_EC_BACKLIGHT = 0x31,
6556
6557 /* TP_EC_BACKLIGHT bitmasks */
6558 TP_EC_BACKLIGHT_LVLMSK = 0x1F,
6559 TP_EC_BACKLIGHT_CMDMSK = 0xE0,
6560 TP_EC_BACKLIGHT_MAPSW = 0x20,
6561};
6562
0e501834
HMH		 6563enum tpacpi_brightness_access_mode {
6564 TPACPI_BRGHT_MODE_AUTO = 0, /* Not implemented yet */
6565 TPACPI_BRGHT_MODE_EC, /* EC control */
6566 TPACPI_BRGHT_MODE_UCMS_STEP, /* UCMS step-based control */
6567 TPACPI_BRGHT_MODE_ECNVRAM, /* EC control w/ NVRAM store */
6568 TPACPI_BRGHT_MODE_MAX
6569};
6570
94954cc6 6571static struct backlight_device *ibm_backlight_device;
0e501834
HMH		 6572
6573static enum tpacpi_brightness_access_mode brightness_mode =
6574 TPACPI_BRGHT_MODE_MAX;
6575
f74a27d4
HMH		 6576static unsigned int brightness_enable = 2; /* 2 = auto, 0 = no, 1 = yes */
6577
b21a15f6 6578static struct mutex brightness_mutex;
56b6aeb0 6579
0e501834
HMH		 6580/* NVRAM brightness access,
6581 * call with brightness_mutex held! */
6582static unsigned int tpacpi_brightness_nvram_get(void)
b21a15f6 6583{
0e501834 6584 u8 lnvram;
b21a15f6 6585
0e501834
HMH		 6586 lnvram = (nvram_read_byte(TP_NVRAM_ADDR_BRIGHTNESS)
6587 & TP_NVRAM_MASK_LEVEL_BRIGHTNESS)
6588 >> TP_NVRAM_POS_LEVEL_BRIGHTNESS;
77775838 6589 lnvram &= bright_maxlvl;
0e501834
HMH		 6590
6591 return lnvram;
6592}
6593
6594static void tpacpi_brightness_checkpoint_nvram(void)
6595{
6596 u8 lec = 0;
6597 u8 b_nvram;
6598
6599 if (brightness_mode != TPACPI_BRGHT_MODE_ECNVRAM)
6600 return;
6601
6602 vdbg_printk(TPACPI_DBG_BRGHT,
6603 "trying to checkpoint backlight level to NVRAM...\n");
6604
6605 if (mutex_lock_killable(&brightness_mutex) < 0)
6606 return;
6607
6608 if (unlikely(!acpi_ec_read(TP_EC_BACKLIGHT, &lec)))
6609 goto unlock;
6610 lec &= TP_EC_BACKLIGHT_LVLMSK;
6611 b_nvram = nvram_read_byte(TP_NVRAM_ADDR_BRIGHTNESS);
6612
6613 if (lec != ((b_nvram & TP_NVRAM_MASK_LEVEL_BRIGHTNESS)
6614 >> TP_NVRAM_POS_LEVEL_BRIGHTNESS)) {
6615 /* NVRAM needs update */
6616 b_nvram &= ~(TP_NVRAM_MASK_LEVEL_BRIGHTNESS <<
6617 TP_NVRAM_POS_LEVEL_BRIGHTNESS);
6618 b_nvram |= lec;
6619 nvram_write_byte(b_nvram, TP_NVRAM_ADDR_BRIGHTNESS);
6620 dbg_printk(TPACPI_DBG_BRGHT,
6621 "updated NVRAM backlight level to %u (0x%02x)\n",
6622 (unsigned int) lec, (unsigned int) b_nvram);
6623 } else
6624 vdbg_printk(TPACPI_DBG_BRGHT,
6625 "NVRAM backlight level already is %u (0x%02x)\n",
6626 (unsigned int) lec, (unsigned int) b_nvram);
6627
6628unlock:
6629 mutex_unlock(&brightness_mutex);
6630}
6631
6632
6633/* call with brightness_mutex held! */
6634static int tpacpi_brightness_get_raw(int *status)
6635{
6636 u8 lec = 0;
6637
6638 switch (brightness_mode) {
6639 case TPACPI_BRGHT_MODE_UCMS_STEP:
6640 *status = tpacpi_brightness_nvram_get();
6641 return 0;
6642 case TPACPI_BRGHT_MODE_EC:
6643 case TPACPI_BRGHT_MODE_ECNVRAM:
6644 if (unlikely(!acpi_ec_read(TP_EC_BACKLIGHT, &lec)))
2d5e94d7 6645 return -EIO;
0e501834
HMH		 6646 *status = lec;
6647 return 0;
6648 default:
6649 return -ENXIO;
b21a15f6 6650 }
0e501834
HMH		 6651}
6652
6653/* call with brightness_mutex held! */
6654/* do NOT call with illegal backlight level value */
6655static int tpacpi_brightness_set_ec(unsigned int value)
6656{
6657 u8 lec = 0;
6658
6659 if (unlikely(!acpi_ec_read(TP_EC_BACKLIGHT, &lec)))
6660 return -EIO;
6661
6662 if (unlikely(!acpi_ec_write(TP_EC_BACKLIGHT,
6663 (lec & TP_EC_BACKLIGHT_CMDMSK) |
6664 (value & TP_EC_BACKLIGHT_LVLMSK))))
6665 return -EIO;
6666
6667 return 0;
6668}
6669
6670/* call with brightness_mutex held! */
6671static int tpacpi_brightness_set_ucmsstep(unsigned int value)
6672{
6673 int cmos_cmd, inc;
6674 unsigned int current_value, i;
6675
6676 current_value = tpacpi_brightness_nvram_get();
6677
6678 if (value == current_value)
6679 return 0;
6680
6681 cmos_cmd = (value > current_value) ?
6682 TP_CMOS_BRIGHTNESS_UP :
6683 TP_CMOS_BRIGHTNESS_DOWN;
6684 inc = (value > current_value) ? 1 : -1;
6685
6686 for (i = current_value; i != value; i += inc)
6687 if (issue_thinkpad_cmos_command(cmos_cmd))
6688 return -EIO;
b21a15f6 6689
e11aecf1 6690 return 0;
b21a15f6
HMH		 6691}
6692
6693/* May return EINTR which can always be mapped to ERESTARTSYS */
0e501834 6694static int brightness_set(unsigned int value)
b21a15f6 6695{
0e501834 6696 int res;
b21a15f6 6697
bd3c7b9e 6698 if (value > bright_maxlvl)
b21a15f6
HMH		 6699 return -EINVAL;
6700
0e501834
HMH		 6701 vdbg_printk(TPACPI_DBG_BRGHT,
6702 "set backlight level to %d\n", value);
6703
7646ea88 6704 res = mutex_lock_killable(&brightness_mutex);
b21a15f6
HMH		 6705 if (res < 0)
6706 return res;
6707
0e501834
HMH		 6708 switch (brightness_mode) {
6709 case TPACPI_BRGHT_MODE_EC:
6710 case TPACPI_BRGHT_MODE_ECNVRAM:
6711 res = tpacpi_brightness_set_ec(value);
6712 break;
6713 case TPACPI_BRGHT_MODE_UCMS_STEP:
6714 res = tpacpi_brightness_set_ucmsstep(value);
6715 break;
6716 default:
6717 res = -ENXIO;
b21a15f6
HMH		 6718 }
6719
b21a15f6
HMH		 6720 mutex_unlock(&brightness_mutex);
6721 return res;
6722}
6723
6724/* sysfs backlight class ----------------------------------------------- */
6725
6726static int brightness_update_status(struct backlight_device *bd)
6727{
0e501834 6728 unsigned int level =
b21a15f6
HMH		 6729 (bd->props.fb_blank == FB_BLANK_UNBLANK &&
6730 bd->props.power == FB_BLANK_UNBLANK) ?
0e501834
HMH		 6731 bd->props.brightness : 0;
6732
6733 dbg_printk(TPACPI_DBG_BRGHT,
6734 "backlight: attempt to set level to %d\n",
6735 level);
6736
6737 /* it is the backlight class's job (caller) to handle
6738 * EINTR and other errors properly */
6739 return brightness_set(level);
b21a15f6
HMH		 6740}
6741
e11aecf1 6742static int brightness_get(struct backlight_device *bd)
a3f104c0 6743{
e11aecf1 6744 int status, res;
a3f104c0 6745
0e501834 6746 res = mutex_lock_killable(&brightness_mutex);
e11aecf1 6747 if (res < 0)
0e501834
HMH		 6748 return 0;
6749
6750 res = tpacpi_brightness_get_raw(&status);
6751
6752 mutex_unlock(&brightness_mutex);
6753
6754 if (res < 0)
6755 return 0;
e11e211a 6756
e11aecf1 6757 return status & TP_EC_BACKLIGHT_LVLMSK;
e11e211a
HMH		 6758}
6759
347a2686
HMH		 6760static void tpacpi_brightness_notify_change(void)
6761{
6762 backlight_force_update(ibm_backlight_device,
6763 BACKLIGHT_UPDATE_HOTKEY);
6764}
6765
acc2472e 6766static const struct backlight_ops ibm_backlight_data = {
35ff8b9f
HMH		 6767 .get_brightness = brightness_get,
6768 .update_status = brightness_update_status,
56b6aeb0 6769};
e11e211a 6770
b21a15f6 6771/* --------------------------------------------------------------------- */
e11e211a 6772
122f2672
HMH		 6773/*
6774 * Call _BCL method of video device. On some ThinkPads this will
6775 * switch the firmware to the ACPI brightness control mode.
6776 */
6777
77775838
HMH		 6778static int __init tpacpi_query_bcl_levels(acpi_handle handle)
6779{
6780 struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
6781 union acpi_object *obj;
46445b6b 6782 struct acpi_device *device, *child;
77775838
HMH		 6783 int rc;
6784
46445b6b
AL		 6785 if (acpi_bus_get_device(handle, &device))
6786 return 0;
6787
6788 rc = 0;
6789 list_for_each_entry(child, &device->children, node) {
6790 acpi_status status = acpi_evaluate_object(child->handle, "_BCL",
6791 NULL, &buffer);
6792 if (ACPI_FAILURE(status))
6793 continue;
6794
77775838
HMH		 6795 obj = (union acpi_object *)buffer.pointer;
6796 if (!obj || (obj->type != ACPI_TYPE_PACKAGE)) {
0978e012 6797 pr_err("Unknown _BCL data, please report this to %s\n",
46445b6b 6798 TPACPI_MAIL);
77775838
HMH		 6799 rc = 0;
6800 } else {
6801 rc = obj->package.count;
6802 }
46445b6b 6803 break;
77775838
HMH		 6804 }
6805
6806 kfree(buffer.pointer);
6807 return rc;
6808}
6809
77775838
HMH		 6810
6811/*
6812 * Returns 0 (no ACPI _BCL or _BCL invalid), or size of brightness map
6813 */
6814static unsigned int __init tpacpi_check_std_acpi_brightness_support(void)
6815{
122f2672 6816 acpi_handle video_device;
77775838 6817 int bcl_levels = 0;
77775838 6818
46445b6b 6819 tpacpi_acpi_handle_locate("video", NULL, &video_device);
122f2672
HMH		 6820 if (video_device)
6821 bcl_levels = tpacpi_query_bcl_levels(video_device);
77775838 6822
122f2672 6823 tp_features.bright_acpimode = (bcl_levels > 0);
77775838 6824
122f2672 6825 return (bcl_levels > 2) ? (bcl_levels - 2) : 0;
77775838
HMH		 6826}
6827
59fe4fe3
HMH		 6828/*
6829 * These are only useful for models that have only one possibility
6830 * of GPU. If the BIOS model handles both ATI and Intel, don't use
6831 * these quirks.
6832 */
6833#define TPACPI_BRGHT_Q_NOEC 0x0001 /* Must NOT use EC HBRV */
6834#define TPACPI_BRGHT_Q_EC 0x0002 /* Should or must use EC HBRV */
6835#define TPACPI_BRGHT_Q_ASK 0x8000 /* Ask for user report */
6836
6837static const struct tpacpi_quirk brightness_quirk_table[] __initconst = {
6838 /* Models with ATI GPUs known to require ECNVRAM mode */
6839 TPACPI_Q_IBM('1', 'Y', TPACPI_BRGHT_Q_EC), /* T43/p ATI */
6840
6da25bf5 6841 /* Models with ATI GPUs that can use ECNVRAM */
7d1894d8 6842 TPACPI_Q_IBM('1', 'R', TPACPI_BRGHT_Q_EC), /* R50,51 T40-42 */
59fe4fe3 6843 TPACPI_Q_IBM('1', 'Q', TPACPI_BRGHT_Q_ASK|TPACPI_BRGHT_Q_EC),
7d1894d8 6844 TPACPI_Q_IBM('7', '6', TPACPI_BRGHT_Q_EC), /* R52 */
59fe4fe3
HMH		 6845 TPACPI_Q_IBM('7', '8', TPACPI_BRGHT_Q_ASK|TPACPI_BRGHT_Q_EC),
6846
6da25bf5 6847 /* Models with Intel Extreme Graphics 2 */
7d1894d8 6848 TPACPI_Q_IBM('1', 'U', TPACPI_BRGHT_Q_NOEC), /* X40 */
a9f8eacc
HMH		 6849 TPACPI_Q_IBM('1', 'V', TPACPI_BRGHT_Q_ASK|TPACPI_BRGHT_Q_EC),
6850 TPACPI_Q_IBM('1', 'W', TPACPI_BRGHT_Q_ASK|TPACPI_BRGHT_Q_EC),
59fe4fe3
HMH		 6851
6852 /* Models with Intel GMA900 */
6853 TPACPI_Q_IBM('7', '0', TPACPI_BRGHT_Q_NOEC), /* T43, R52 */
6854 TPACPI_Q_IBM('7', '4', TPACPI_BRGHT_Q_NOEC), /* X41 */
6855 TPACPI_Q_IBM('7', '5', TPACPI_BRGHT_Q_NOEC), /* X41 Tablet */
6856};
6857
77775838
HMH		 6858/*
6859 * Returns < 0 for error, otherwise sets tp_features.bright_*
6860 * and bright_maxlvl.
6861 */
6862static void __init tpacpi_detect_brightness_capabilities(void)
6863{
6864 unsigned int b;
6865
6866 vdbg_printk(TPACPI_DBG_INIT,
6867 "detecting firmware brightness interface capabilities\n");
6868
6869 /* we could run a quirks check here (same table used by
6870 * brightness_init) if needed */
6871
6872 /*
6873 * We always attempt to detect acpi support, so as to switch
6874 * Lenovo Vista BIOS to ACPI brightness mode even if we are not
6875 * going to publish a backlight interface
6876 */
6877 b = tpacpi_check_std_acpi_brightness_support();
6878 switch (b) {
6879 case 16:
6880 bright_maxlvl = 15;
77775838
HMH		 6881 break;
6882 case 8:
6883 case 0:
6884 bright_maxlvl = 7;
77775838
HMH		 6885 break;
6886 default:
77775838
HMH		 6887 tp_features.bright_unkfw = 1;
6888 bright_maxlvl = b - 1;
6889 }
15c75626 6890 pr_debug("detected %u brightness levels\n", bright_maxlvl + 1);
77775838
HMH		 6891}
6892
a5763f22 6893static int __init brightness_init(struct ibm_init_struct *iibm)
56b6aeb0 6894{
a19a6ee6 6895 struct backlight_properties props;
56b6aeb0 6896 int b;
59fe4fe3 6897 unsigned long quirks;
56b6aeb0 6898
fe08bc4b
HMH		 6899 vdbg_printk(TPACPI_DBG_INIT, "initializing brightness subdriver\n");
6900
f432255e
HMH		 6901 mutex_init(&brightness_mutex);
6902
59fe4fe3
HMH		 6903 quirks = tpacpi_check_quirks(brightness_quirk_table,
6904 ARRAY_SIZE(brightness_quirk_table));
6905
77775838
HMH		 6906 /* tpacpi_detect_brightness_capabilities() must have run already */
6907
6908 /* if it is unknown, we don't handle it: it wouldn't be safe */
6909 if (tp_features.bright_unkfw)
6910 return 1;
2dba1b5d 6911
b5972796 6912 if (!brightness_enable) {
0e501834 6913 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_BRGHT,
5cac62ac 6914 "brightness support disabled by module parameter\n");
b5972796
HMH		 6915 return 1;
6916 }
6917
b33c6ce5 6918 if (acpi_video_get_backlight_type() != acpi_backlight_vendor) {
217f0963 6919 if (brightness_enable > 1) {
5cac62ac 6920 pr_info("Standard ACPI backlight interface available, not loading native one\n");
217f0963
HMH		 6921 return 1;
6922 } else if (brightness_enable == 1) {
5cac62ac 6923 pr_warn("Cannot enable backlight brightness support, ACPI is already handling it. Refer to the acpi_backlight kernel parameter.\n");
217f0963
HMH		 6924 return 1;
6925 }
6926 } else if (tp_features.bright_acpimode && brightness_enable > 1) {
5cac62ac 6927 pr_notice("Standard ACPI backlight interface not available, thinkpad_acpi native brightness control enabled\n");
217f0963
HMH		 6928 }
6929
0e501834
HMH		 6930 /*
6931 * Check for module parameter bogosity, note that we
6932 * init brightness_mode to TPACPI_BRGHT_MODE_MAX in order to be
6933 * able to detect "unspecified"
6934 */
6935 if (brightness_mode > TPACPI_BRGHT_MODE_MAX)
6936 return -EINVAL;
24d3b774 6937
0e501834
HMH		 6938 /* TPACPI_BRGHT_MODE_AUTO not implemented yet, just use default */
6939 if (brightness_mode == TPACPI_BRGHT_MODE_AUTO ||
6940 brightness_mode == TPACPI_BRGHT_MODE_MAX) {
59fe4fe3
HMH		 6941 if (quirks & TPACPI_BRGHT_Q_EC)
6942 brightness_mode = TPACPI_BRGHT_MODE_ECNVRAM;
6943 else
0e501834 6944 brightness_mode = TPACPI_BRGHT_MODE_UCMS_STEP;
24d3b774 6945
0e501834 6946 dbg_printk(TPACPI_DBG_BRGHT,
59fe4fe3 6947 "driver auto-selected brightness_mode=%d\n",
0e501834
HMH		 6948 brightness_mode);
6949 }
24d3b774 6950
d7880f10 6951 /* Safety */
e28393c0 6952 if (!tpacpi_is_ibm() &&
d7880f10
HMH		 6953 (brightness_mode == TPACPI_BRGHT_MODE_ECNVRAM ||
6954 brightness_mode == TPACPI_BRGHT_MODE_EC))
6955 return -EINVAL;
6956
0e501834 6957 if (tpacpi_brightness_get_raw(&b) < 0)
24d3b774 6958 return 1;
56b6aeb0 6959
a19a6ee6 6960 memset(&props, 0, sizeof(struct backlight_properties));
bb7ca747 6961 props.type = BACKLIGHT_PLATFORM;
77775838
HMH		 6962 props.max_brightness = bright_maxlvl;
6963 props.brightness = b & TP_EC_BACKLIGHT_LVLMSK;
a19a6ee6
MG		 6964 ibm_backlight_device = backlight_device_register(TPACPI_BACKLIGHT_DEV_NAME,
6965 NULL, NULL,
6966 &ibm_backlight_data,
6967 &props);
56b6aeb0 6968 if (IS_ERR(ibm_backlight_device)) {
435c47e2
HMH		 6969 int rc = PTR_ERR(ibm_backlight_device);
6970 ibm_backlight_device = NULL;
0978e012 6971 pr_err("Could not register backlight device\n");
435c47e2 6972 return rc;
56b6aeb0 6973 }
0e501834
HMH		 6974 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_BRGHT,
6975 "brightness is supported\n");
56b6aeb0 6976
59fe4fe3 6977 if (quirks & TPACPI_BRGHT_Q_ASK) {
5cac62ac
AS		 6978 pr_notice("brightness: will use unverified default: brightness_mode=%d\n",
6979 brightness_mode);
6980 pr_notice("brightness: please report to %s whether it works well or not on your ThinkPad\n",
6981 TPACPI_MAIL);
59fe4fe3
HMH		 6982 }
6983
7d9745cf
HMH		 6984 /* Added by mistake in early 2007. Probably useless, but it could
6985 * be working around some unknown firmware problem where the value
6986 * read at startup doesn't match the real hardware state... so leave
6987 * it in place just in case */
56b6aeb0
HMH		 6988 backlight_update_status(ibm_backlight_device);
6989
347a2686 6990 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_BRGHT,
5cac62ac 6991 "brightness: registering brightness hotkeys as change notification\n");
347a2686
HMH		 6992 tpacpi_hotkey_driver_mask_set(hotkey_driver_mask
6993 | TP_ACPI_HKEY_BRGHTUP_MASK
3098064d 6994 | TP_ACPI_HKEY_BRGHTDWN_MASK);
56b6aeb0
HMH		 6995 return 0;
6996}
6997
fd3c3a42 6998static void brightness_suspend(void)
0e501834
HMH		 6999{
7000 tpacpi_brightness_checkpoint_nvram();
7001}
7002
7003static void brightness_shutdown(void)
7004{
7005 tpacpi_brightness_checkpoint_nvram();
7006}
7007
56b6aeb0
HMH		 7008static void brightness_exit(void)
7009{
7010 if (ibm_backlight_device) {
0e501834 7011 vdbg_printk(TPACPI_DBG_EXIT | TPACPI_DBG_BRGHT,
fe08bc4b 7012 "calling backlight_device_unregister()\n");
56b6aeb0 7013 backlight_device_unregister(ibm_backlight_device);
56b6aeb0 7014 }
0e501834
HMH		 7015
7016 tpacpi_brightness_checkpoint_nvram();
56b6aeb0
HMH		 7017}
7018
887965e6 7019static int brightness_read(struct seq_file *m)
56b6aeb0 7020{
56b6aeb0
HMH		 7021 int level;
7022
35ff8b9f
HMH		 7023 level = brightness_get(NULL);
7024 if (level < 0) {
887965e6 7025 seq_printf(m, "level:\t\tunreadable\n");
56b6aeb0 7026 } else {
887965e6
AD		 7027 seq_printf(m, "level:\t\t%d\n", level);
7028 seq_printf(m, "commands:\tup, down\n");
77775838
HMH		 7029 seq_printf(m, "commands:\tlevel <level> (<level> is 0-%d)\n",
7030 bright_maxlvl);
56b6aeb0
HMH		 7031 }
7032
887965e6 7033 return 0;
56b6aeb0
HMH		 7034}
7035
8acb0250
HM		 7036static int brightness_write(char *buf)
7037{
7038 int level;
4273af8d 7039 int rc;
1da177e4 7040 char *cmd;
1da177e4 7041
4273af8d
HMH		 7042 level = brightness_get(NULL);
7043 if (level < 0)
7044 return level;
78f81cc4 7045
4273af8d 7046 while ((cmd = next_cmd(&buf))) {
78f81cc4 7047 if (strlencmp(cmd, "up") == 0) {
77775838 7048 if (level < bright_maxlvl)
4273af8d 7049 level++;
78f81cc4 7050 } else if (strlencmp(cmd, "down") == 0) {
4273af8d
HMH		 7051 if (level > 0)
7052 level--;
7053 } else if (sscanf(cmd, "level %d", &level) == 1 &&
77775838 7054 level >= 0 && level <= bright_maxlvl) {
4273af8d 7055 /* new level set */
78f81cc4
BD		 7056 } else
7057 return -EINVAL;
78f81cc4
BD		 7058 }
7059
0e501834
HMH		 7060 tpacpi_disclose_usertask("procfs brightness",
7061 "set level to %d\n", level);
7062
4273af8d
HMH		 7063 /*
7064 * Now we know what the final level should be, so we try to set it.
7065 * Doing it this way makes the syscall restartable in case of EINTR
7066 */
7067 rc = brightness_set(level);
347a2686
HMH		 7068 if (!rc && ibm_backlight_device)
7069 backlight_force_update(ibm_backlight_device,
7070 BACKLIGHT_UPDATE_SYSFS);
72a979f0 7071 return (rc == -EINTR) ? -ERESTARTSYS : rc;
78f81cc4
BD		 7072}
7073
a5763f22
HMH		 7074static struct ibm_struct brightness_driver_data = {
7075 .name = "brightness",
7076 .read = brightness_read,
7077 .write = brightness_write,
7078 .exit = brightness_exit,
0e501834
HMH		 7079 .suspend = brightness_suspend,
7080 .shutdown = brightness_shutdown,
a5763f22
HMH		 7081};
7082
56b6aeb0
HMH		 7083/*************************************************************************
7084 * Volume subdriver
7085 */
fb87a811 7086
329e4e18
HMH		 7087/*
7088 * IBM ThinkPads have a simple volume controller with MUTE gating.
7089 * Very early Lenovo ThinkPads follow the IBM ThinkPad spec.
7090 *
7091 * Since the *61 series (and probably also the later *60 series), Lenovo
7092 * ThinkPads only implement the MUTE gate.
7093 *
7094 * EC register 0x30
7095 * Bit 6: MUTE (1 mutes sound)
7096 * Bit 3-0: Volume
7097 * Other bits should be zero as far as we know.
7098 *
7099 * This is also stored in CMOS NVRAM, byte 0x60, bit 6 (MUTE), and
7100 * bits 3-0 (volume). Other bits in NVRAM may have other functions,
7101 * such as bit 7 which is used to detect repeated presses of MUTE,
7102 * and we leave them unchanged.
9a417ec0
AL		 7103 *
7104 * On newer Lenovo ThinkPads, the EC can automatically change the volume
7105 * in response to user input. Unfortunately, this rarely works well.
7106 * The laptop changes the state of its internal MUTE gate and, on some
7107 * models, sends KEY_MUTE, causing any user code that responds to the
7108 * mute button to get confused. The hardware MUTE gate is also
7109 * unnecessary, since user code can handle the mute button without
7110 * kernel or EC help.
7111 *
7112 * To avoid confusing userspace, we simply disable all EC-based mute
7113 * and volume controls when possible.
329e4e18
HMH		 7114 */
7115
ff850c33
HMH		 7116#ifdef CONFIG_THINKPAD_ACPI_ALSA_SUPPORT
7117
0d204c34
HMH		 7118#define TPACPI_ALSA_DRVNAME "ThinkPad EC"
7119#define TPACPI_ALSA_SHRTNAME "ThinkPad Console Audio Control"
7120#define TPACPI_ALSA_MIXERNAME TPACPI_ALSA_SHRTNAME
7121
cab66613
TI		 7122#if SNDRV_CARDS <= 32
7123#define DEFAULT_ALSA_IDX ~((1 << (SNDRV_CARDS - 3)) - 1)
7124#else
7125#define DEFAULT_ALSA_IDX ~((1 << (32 - 3)) - 1)
7126#endif
7127static int alsa_index = DEFAULT_ALSA_IDX; /* last three slots */
0d204c34 7128static char *alsa_id = "ThinkPadEC";
90ab5ee9 7129static bool alsa_enable = SNDRV_DEFAULT_ENABLE1;
0d204c34
HMH		 7130
7131struct tpacpi_alsa_data {
7132 struct snd_card *card;
7133 struct snd_ctl_elem_id *ctl_mute_id;
7134 struct snd_ctl_elem_id *ctl_vol_id;
7135};
7136
7137static struct snd_card *alsa_card;
7138
329e4e18
HMH		 7139enum {
7140 TP_EC_AUDIO = 0x30,
7141
7142 /* TP_EC_AUDIO bits */
7143 TP_EC_AUDIO_MUTESW = 6,
7144
7145 /* TP_EC_AUDIO bitmasks */
7146 TP_EC_AUDIO_LVL_MSK = 0x0F,
7147 TP_EC_AUDIO_MUTESW_MSK = (1 << TP_EC_AUDIO_MUTESW),
7148
7149 /* Maximum volume */
7150 TP_EC_VOLUME_MAX = 14,
7151};
7152
7153enum tpacpi_volume_access_mode {
7154 TPACPI_VOL_MODE_AUTO = 0, /* Not implemented yet */
7155 TPACPI_VOL_MODE_EC, /* Pure EC control */
7156 TPACPI_VOL_MODE_UCMS_STEP, /* UCMS step-based control: N/A */
7157 TPACPI_VOL_MODE_ECNVRAM, /* EC control w/ NVRAM store */
7158 TPACPI_VOL_MODE_MAX
7159};
7160
a112ceee
HMH		 7161enum tpacpi_volume_capabilities {
7162 TPACPI_VOL_CAP_AUTO = 0, /* Use white/blacklist */
7163 TPACPI_VOL_CAP_VOLMUTE, /* Output vol and mute */
7164 TPACPI_VOL_CAP_MUTEONLY, /* Output mute only */
7165 TPACPI_VOL_CAP_MAX
7166};
7167
9a417ec0
AL		 7168enum tpacpi_mute_btn_mode {
7169 TP_EC_MUTE_BTN_LATCH = 0, /* Mute mutes; up/down unmutes */
7170 /* We don't know what mode 1 is. */
7171 TP_EC_MUTE_BTN_NONE = 2, /* Mute and up/down are just keys */
7172 TP_EC_MUTE_BTN_TOGGLE = 3, /* Mute toggles; up/down unmutes */
7173};
7174
329e4e18
HMH		 7175static enum tpacpi_volume_access_mode volume_mode =
7176 TPACPI_VOL_MODE_MAX;
7177
a112ceee 7178static enum tpacpi_volume_capabilities volume_capabilities;
90ab5ee9 7179static bool volume_control_allowed;
9a417ec0
AL		 7180static bool software_mute_requested = true;
7181static bool software_mute_active;
7182static int software_mute_orig_mode;
f74a27d4 7183
329e4e18
HMH		 7184/*
7185 * Used to syncronize writers to TP_EC_AUDIO and
7186 * TP_NVRAM_ADDR_MIXER, as we need to do read-modify-write
7187 */
7188static struct mutex volume_mutex;
7189
7190static void tpacpi_volume_checkpoint_nvram(void)
78f81cc4 7191{
329e4e18
HMH		 7192 u8 lec = 0;
7193 u8 b_nvram;
a112ceee 7194 u8 ec_mask;
329e4e18
HMH		 7195
7196 if (volume_mode != TPACPI_VOL_MODE_ECNVRAM)
7197 return;
c7ac6291
HMH		 7198 if (!volume_control_allowed)
7199 return;
9a417ec0
AL		 7200 if (software_mute_active)
7201 return;
329e4e18
HMH		 7202
7203 vdbg_printk(TPACPI_DBG_MIXER,
7204 "trying to checkpoint mixer state to NVRAM...\n");
78f81cc4 7205
a112ceee
HMH		 7206 if (tp_features.mixer_no_level_control)
7207 ec_mask = TP_EC_AUDIO_MUTESW_MSK;
7208 else
7209 ec_mask = TP_EC_AUDIO_MUTESW_MSK | TP_EC_AUDIO_LVL_MSK;
7210
329e4e18
HMH		 7211 if (mutex_lock_killable(&volume_mutex) < 0)
7212 return;
7213
7214 if (unlikely(!acpi_ec_read(TP_EC_AUDIO, &lec)))
7215 goto unlock;
7216 lec &= ec_mask;
7217 b_nvram = nvram_read_byte(TP_NVRAM_ADDR_MIXER);
7218
7219 if (lec != (b_nvram & ec_mask)) {
7220 /* NVRAM needs update */
7221 b_nvram &= ~ec_mask;
7222 b_nvram |= lec;
7223 nvram_write_byte(b_nvram, TP_NVRAM_ADDR_MIXER);
7224 dbg_printk(TPACPI_DBG_MIXER,
7225 "updated NVRAM mixer status to 0x%02x (0x%02x)\n",
7226 (unsigned int) lec, (unsigned int) b_nvram);
78f81cc4 7227 } else {
329e4e18
HMH		 7228 vdbg_printk(TPACPI_DBG_MIXER,
7229 "NVRAM mixer status already is 0x%02x (0x%02x)\n",
7230 (unsigned int) lec, (unsigned int) b_nvram);
78f81cc4
BD		 7231 }
7232
329e4e18
HMH		 7233unlock:
7234 mutex_unlock(&volume_mutex);
78f81cc4
BD		 7235}
7236
329e4e18 7237static int volume_get_status_ec(u8 *status)
78f81cc4 7238{
329e4e18 7239 u8 s;
78f81cc4 7240
329e4e18
HMH		 7241 if (!acpi_ec_read(TP_EC_AUDIO, &s))
7242 return -EIO;
78f81cc4 7243
329e4e18 7244 *status = s;
1da177e4 7245
329e4e18 7246 dbg_printk(TPACPI_DBG_MIXER, "status 0x%02x\n", s);
35ff8b9f 7247
329e4e18
HMH		 7248 return 0;
7249}
78f81cc4 7250
329e4e18
HMH		 7251static int volume_get_status(u8 *status)
7252{
7253 return volume_get_status_ec(status);
7254}
78f81cc4 7255
329e4e18
HMH		 7256static int volume_set_status_ec(const u8 status)
7257{
7258 if (!acpi_ec_write(TP_EC_AUDIO, status))
7259 return -EIO;
78f81cc4 7260
329e4e18
HMH		 7261 dbg_printk(TPACPI_DBG_MIXER, "set EC mixer to 0x%02x\n", status);
7262
9a417ec0
AL		 7263 /*
7264 * On X200s, and possibly on others, it can take a while for
7265 * reads to become correct.
7266 */
7267 msleep(1);
7268
329e4e18
HMH		 7269 return 0;
7270}
7271
7272static int volume_set_status(const u8 status)
7273{
7274 return volume_set_status_ec(status);
7275}
7276
88cc8377
HMH		 7277/* returns < 0 on error, 0 on no change, 1 on change */
7278static int __volume_set_mute_ec(const bool mute)
329e4e18
HMH		 7279{
7280 int rc;
7281 u8 s, n;
7282
7283 if (mutex_lock_killable(&volume_mutex) < 0)
7284 return -EINTR;
7285
7286 rc = volume_get_status_ec(&s);
7287 if (rc)
7288 goto unlock;
7289
7290 n = (mute) ? s | TP_EC_AUDIO_MUTESW_MSK :
7291 s & ~TP_EC_AUDIO_MUTESW_MSK;
7292
88cc8377 7293 if (n != s) {
329e4e18 7294 rc = volume_set_status_ec(n);
88cc8377
HMH		 7295 if (!rc)
7296 rc = 1;
7297 }
329e4e18
HMH		 7298
7299unlock:
7300 mutex_unlock(&volume_mutex);
7301 return rc;
7302}
7303
88cc8377
HMH		 7304static int volume_alsa_set_mute(const bool mute)
7305{
7306 dbg_printk(TPACPI_DBG_MIXER, "ALSA: trying to %smute\n",
7307 (mute) ? "" : "un");
7308 return __volume_set_mute_ec(mute);
7309}
7310
329e4e18
HMH		 7311static int volume_set_mute(const bool mute)
7312{
88cc8377
HMH		 7313 int rc;
7314
329e4e18
HMH		 7315 dbg_printk(TPACPI_DBG_MIXER, "trying to %smute\n",
7316 (mute) ? "" : "un");
88cc8377
HMH		 7317
7318 rc = __volume_set_mute_ec(mute);
7319 return (rc < 0) ? rc : 0;
329e4e18
HMH		 7320}
7321
88cc8377
HMH		 7322/* returns < 0 on error, 0 on no change, 1 on change */
7323static int __volume_set_volume_ec(const u8 vol)
329e4e18
HMH		 7324{
7325 int rc;
7326 u8 s, n;
7327
7328 if (vol > TP_EC_VOLUME_MAX)
7329 return -EINVAL;
7330
7331 if (mutex_lock_killable(&volume_mutex) < 0)
7332 return -EINTR;
7333
7334 rc = volume_get_status_ec(&s);
7335 if (rc)
7336 goto unlock;
7337
7338 n = (s & ~TP_EC_AUDIO_LVL_MSK) | vol;
7339
88cc8377 7340 if (n != s) {
329e4e18 7341 rc = volume_set_status_ec(n);
88cc8377
HMH		 7342 if (!rc)
7343 rc = 1;
7344 }
329e4e18
HMH		 7345
7346unlock:
7347 mutex_unlock(&volume_mutex);
7348 return rc;
7349}
7350
9a417ec0
AL		 7351static int volume_set_software_mute(bool startup)
7352{
7353 int result;
7354
7355 if (!tpacpi_is_lenovo())
7356 return -ENODEV;
7357
7358 if (startup) {
7359 if (!acpi_evalf(ec_handle, &software_mute_orig_mode,
7360 "HAUM", "qd"))
7361 return -EIO;
7362
7363 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER,
7364 "Initial HAUM setting was %d\n",
7365 software_mute_orig_mode);
7366 }
7367
7368 if (!acpi_evalf(ec_handle, &result, "SAUM", "qdd",
7369 (int)TP_EC_MUTE_BTN_NONE))
7370 return -EIO;
7371
7372 if (result != TP_EC_MUTE_BTN_NONE)
7373 pr_warn("Unexpected SAUM result %d\n",
7374 result);
7375
7376 /*
7377 * In software mute mode, the standard codec controls take
7378 * precendence, so we unmute the ThinkPad HW switch at
7379 * startup. Just on case there are SAUM-capable ThinkPads
7380 * with level controls, set max HW volume as well.
7381 */
7382 if (tp_features.mixer_no_level_control)
7383 result = volume_set_mute(false);
7384 else
7385 result = volume_set_status(TP_EC_VOLUME_MAX);
7386
7387 if (result != 0)
7388 pr_warn("Failed to unmute the HW mute switch\n");
7389
7390 return 0;
7391}
7392
7393static void volume_exit_software_mute(void)
7394{
7395 int r;
7396
7397 if (!acpi_evalf(ec_handle, &r, "SAUM", "qdd", software_mute_orig_mode)
7398 || r != software_mute_orig_mode)
7399 pr_warn("Failed to restore mute mode\n");
7400}
7401
88cc8377 7402static int volume_alsa_set_volume(const u8 vol)
329e4e18
HMH		 7403{
7404 dbg_printk(TPACPI_DBG_MIXER,
88cc8377
HMH		 7405 "ALSA: trying to set volume level to %hu\n", vol);
7406 return __volume_set_volume_ec(vol);
329e4e18
HMH		 7407}
7408
0d204c34
HMH		 7409static void volume_alsa_notify_change(void)
7410{
7411 struct tpacpi_alsa_data *d;
7412
7413 if (alsa_card && alsa_card->private_data) {
7414 d = alsa_card->private_data;
7415 if (d->ctl_mute_id)
7416 snd_ctl_notify(alsa_card,
7417 SNDRV_CTL_EVENT_MASK_VALUE,
7418 d->ctl_mute_id);
7419 if (d->ctl_vol_id)
7420 snd_ctl_notify(alsa_card,
7421 SNDRV_CTL_EVENT_MASK_VALUE,
7422 d->ctl_vol_id);
7423 }
7424}
7425
7426static int volume_alsa_vol_info(struct snd_kcontrol *kcontrol,
7427 struct snd_ctl_elem_info *uinfo)
7428{
7429 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
7430 uinfo->count = 1;
7431 uinfo->value.integer.min = 0;
7432 uinfo->value.integer.max = TP_EC_VOLUME_MAX;
7433 return 0;
7434}
7435
7436static int volume_alsa_vol_get(struct snd_kcontrol *kcontrol,
7437 struct snd_ctl_elem_value *ucontrol)
7438{
7439 u8 s;
7440 int rc;
7441
7442 rc = volume_get_status(&s);
7443 if (rc < 0)
7444 return rc;
7445
7446 ucontrol->value.integer.value[0] = s & TP_EC_AUDIO_LVL_MSK;
7447 return 0;
7448}
7449
7450static int volume_alsa_vol_put(struct snd_kcontrol *kcontrol,
7451 struct snd_ctl_elem_value *ucontrol)
7452{
38e11cde
HMH		 7453 tpacpi_disclose_usertask("ALSA", "set volume to %ld\n",
7454 ucontrol->value.integer.value[0]);
88cc8377 7455 return volume_alsa_set_volume(ucontrol->value.integer.value[0]);
0d204c34
HMH		 7456}
7457
7458#define volume_alsa_mute_info snd_ctl_boolean_mono_info
7459
7460static int volume_alsa_mute_get(struct snd_kcontrol *kcontrol,
7461 struct snd_ctl_elem_value *ucontrol)
7462{
7463 u8 s;
7464 int rc;
7465
7466 rc = volume_get_status(&s);
7467 if (rc < 0)
7468 return rc;
7469
7470 ucontrol->value.integer.value[0] =
7471 (s & TP_EC_AUDIO_MUTESW_MSK) ? 0 : 1;
7472 return 0;
7473}
7474
7475static int volume_alsa_mute_put(struct snd_kcontrol *kcontrol,
7476 struct snd_ctl_elem_value *ucontrol)
7477{
38e11cde
HMH		 7478 tpacpi_disclose_usertask("ALSA", "%smute\n",
7479 ucontrol->value.integer.value[0] ?
7480 "un" : "");
88cc8377 7481 return volume_alsa_set_mute(!ucontrol->value.integer.value[0]);
0d204c34
HMH		 7482}
7483
c3aa4723 7484static struct snd_kcontrol_new volume_alsa_control_vol __initdata = {
0d204c34
HMH		 7485 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
7486 .name = "Console Playback Volume",
7487 .index = 0,
7488 .access = SNDRV_CTL_ELEM_ACCESS_READ,
7489 .info = volume_alsa_vol_info,
7490 .get = volume_alsa_vol_get,
7491};
7492
c3aa4723 7493static struct snd_kcontrol_new volume_alsa_control_mute __initdata = {
0d204c34
HMH		 7494 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
7495 .name = "Console Playback Switch",
7496 .index = 0,
7497 .access = SNDRV_CTL_ELEM_ACCESS_READ,
7498 .info = volume_alsa_mute_info,
7499 .get = volume_alsa_mute_get,
7500};
7501
fd3c3a42 7502static void volume_suspend(void)
329e4e18
HMH		 7503{
7504 tpacpi_volume_checkpoint_nvram();
7505}
7506
0d204c34
HMH		 7507static void volume_resume(void)
7508{
9a417ec0
AL		 7509 if (software_mute_active) {
7510 if (volume_set_software_mute(false) < 0)
7511 pr_warn("Failed to restore software mute\n");
7512 } else {
7513 volume_alsa_notify_change();
7514 }
0d204c34
HMH		 7515}
7516
329e4e18
HMH		 7517static void volume_shutdown(void)
7518{
7519 tpacpi_volume_checkpoint_nvram();
7520}
7521
7522static void volume_exit(void)
7523{
0d204c34
HMH		 7524 if (alsa_card) {
7525 snd_card_free(alsa_card);
7526 alsa_card = NULL;
7527 }
7528
329e4e18 7529 tpacpi_volume_checkpoint_nvram();
9a417ec0
AL		 7530
7531 if (software_mute_active)
7532 volume_exit_software_mute();
329e4e18
HMH		 7533}
7534
0d204c34
HMH		 7535static int __init volume_create_alsa_mixer(void)
7536{
7537 struct snd_card *card;
7538 struct tpacpi_alsa_data *data;
7539 struct snd_kcontrol *ctl_vol;
7540 struct snd_kcontrol *ctl_mute;
7541 int rc;
7542
89235e55
TI		 7543 rc = snd_card_new(&tpacpi_pdev->dev,
7544 alsa_index, alsa_id, THIS_MODULE,
7545 sizeof(struct tpacpi_alsa_data), &card);
74c75c18 7546 if (rc < 0 || !card) {
0978e012 7547 pr_err("Failed to create ALSA card structures: %d\n", rc);
74c75c18
HMH		 7548 return 1;
7549 }
0d204c34
HMH		 7550
7551 BUG_ON(!card->private_data);
7552 data = card->private_data;
7553 data->card = card;
7554
7555 strlcpy(card->driver, TPACPI_ALSA_DRVNAME,
7556 sizeof(card->driver));
7557 strlcpy(card->shortname, TPACPI_ALSA_SHRTNAME,
7558 sizeof(card->shortname));
7559 snprintf(card->mixername, sizeof(card->mixername), "ThinkPad EC %s",
7560 (thinkpad_id.ec_version_str) ?
7561 thinkpad_id.ec_version_str : "(unknown)");
7562 snprintf(card->longname, sizeof(card->longname),
7563 "%s at EC reg 0x%02x, fw %s", card->shortname, TP_EC_AUDIO,
7564 (thinkpad_id.ec_version_str) ?
7565 thinkpad_id.ec_version_str : "unknown");
7566
7567 if (volume_control_allowed) {
7568 volume_alsa_control_vol.put = volume_alsa_vol_put;
7569 volume_alsa_control_vol.access =
7570 SNDRV_CTL_ELEM_ACCESS_READWRITE;
7571
7572 volume_alsa_control_mute.put = volume_alsa_mute_put;
7573 volume_alsa_control_mute.access =
7574 SNDRV_CTL_ELEM_ACCESS_READWRITE;
7575 }
7576
7577 if (!tp_features.mixer_no_level_control) {
7578 ctl_vol = snd_ctl_new1(&volume_alsa_control_vol, NULL);
7579 rc = snd_ctl_add(card, ctl_vol);
7580 if (rc < 0) {
0978e012
JP		 7581 pr_err("Failed to create ALSA volume control: %d\n",
7582 rc);
74c75c18 7583 goto err_exit;
78f81cc4 7584 }
0d204c34
HMH		 7585 data->ctl_vol_id = &ctl_vol->id;
7586 }
78f81cc4 7587
0d204c34
HMH		 7588 ctl_mute = snd_ctl_new1(&volume_alsa_control_mute, NULL);
7589 rc = snd_ctl_add(card, ctl_mute);
7590 if (rc < 0) {
0978e012 7591 pr_err("Failed to create ALSA mute control: %d\n", rc);
74c75c18 7592 goto err_exit;
0d204c34
HMH		 7593 }
7594 data->ctl_mute_id = &ctl_mute->id;
35ff8b9f 7595
0d204c34 7596 rc = snd_card_register(card);
0d204c34 7597 if (rc < 0) {
0978e012 7598 pr_err("Failed to register ALSA card: %d\n", rc);
74c75c18 7599 goto err_exit;
0d204c34
HMH		 7600 }
7601
7602 alsa_card = card;
74c75c18
HMH		 7603 return 0;
7604
7605err_exit:
7606 snd_card_free(card);
7607 return 1;
0d204c34
HMH		 7608}
7609
a112ceee
HMH		 7610#define TPACPI_VOL_Q_MUTEONLY 0x0001 /* Mute-only control available */
7611#define TPACPI_VOL_Q_LEVEL 0x0002 /* Volume control available */
7612
7613static const struct tpacpi_quirk volume_quirk_table[] __initconst = {
7614 /* Whitelist volume level on all IBM by default */
7615 { .vendor = PCI_VENDOR_ID_IBM,
7616 .bios = TPACPI_MATCH_ANY,
7617 .ec = TPACPI_MATCH_ANY,
7618 .quirks = TPACPI_VOL_Q_LEVEL },
7619
7620 /* Lenovo models with volume control (needs confirmation) */
7621 TPACPI_QEC_LNV('7', 'C', TPACPI_VOL_Q_LEVEL), /* R60/i */
7622 TPACPI_QEC_LNV('7', 'E', TPACPI_VOL_Q_LEVEL), /* R60e/i */
7623 TPACPI_QEC_LNV('7', '9', TPACPI_VOL_Q_LEVEL), /* T60/p */
7624 TPACPI_QEC_LNV('7', 'B', TPACPI_VOL_Q_LEVEL), /* X60/s */
7625 TPACPI_QEC_LNV('7', 'J', TPACPI_VOL_Q_LEVEL), /* X60t */
7626 TPACPI_QEC_LNV('7', '7', TPACPI_VOL_Q_LEVEL), /* Z60 */
7627 TPACPI_QEC_LNV('7', 'F', TPACPI_VOL_Q_LEVEL), /* Z61 */
7628
7629 /* Whitelist mute-only on all Lenovo by default */
7630 { .vendor = PCI_VENDOR_ID_LENOVO,
7631 .bios = TPACPI_MATCH_ANY,
7632 .ec = TPACPI_MATCH_ANY,
7633 .quirks = TPACPI_VOL_Q_MUTEONLY }
7634};
7635
329e4e18
HMH		 7636static int __init volume_init(struct ibm_init_struct *iibm)
7637{
a112ceee 7638 unsigned long quirks;
0d204c34 7639 int rc;
a112ceee 7640
329e4e18
HMH		 7641 vdbg_printk(TPACPI_DBG_INIT, "initializing volume subdriver\n");
7642
7643 mutex_init(&volume_mutex);
7644
7645 /*
7646 * Check for module parameter bogosity, note that we
7647 * init volume_mode to TPACPI_VOL_MODE_MAX in order to be
7648 * able to detect "unspecified"
7649 */
7650 if (volume_mode > TPACPI_VOL_MODE_MAX)
7651 return -EINVAL;
7652
7653 if (volume_mode == TPACPI_VOL_MODE_UCMS_STEP) {
5cac62ac
AS		 7654 pr_err("UCMS step volume mode not implemented, please contact %s\n",
7655 TPACPI_MAIL);
329e4e18
HMH		 7656 return 1;
7657 }
7658
a112ceee
HMH		 7659 if (volume_capabilities >= TPACPI_VOL_CAP_MAX)
7660 return -EINVAL;
7661
0d204c34
HMH		 7662 /*
7663 * The ALSA mixer is our primary interface.
7664 * When disabled, don't install the subdriver at all
7665 */
7666 if (!alsa_enable) {
7667 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER,
5cac62ac 7668 "ALSA mixer disabled by parameter, not loading volume subdriver...\n");
0d204c34
HMH		 7669 return 1;
7670 }
7671
a112ceee
HMH		 7672 quirks = tpacpi_check_quirks(volume_quirk_table,
7673 ARRAY_SIZE(volume_quirk_table));
7674
7675 switch (volume_capabilities) {
7676 case TPACPI_VOL_CAP_AUTO:
7677 if (quirks & TPACPI_VOL_Q_MUTEONLY)
7678 tp_features.mixer_no_level_control = 1;
7679 else if (quirks & TPACPI_VOL_Q_LEVEL)
7680 tp_features.mixer_no_level_control = 0;
7681 else
7682 return 1; /* no mixer */
7683 break;
7684 case TPACPI_VOL_CAP_VOLMUTE:
7685 tp_features.mixer_no_level_control = 0;
7686 break;
7687 case TPACPI_VOL_CAP_MUTEONLY:
7688 tp_features.mixer_no_level_control = 1;
7689 break;
7690 default:
7691 return 1;
7692 }
7693
7694 if (volume_capabilities != TPACPI_VOL_CAP_AUTO)
7695 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER,
7696 "using user-supplied volume_capabilities=%d\n",
7697 volume_capabilities);
7698
329e4e18
HMH		 7699 if (volume_mode == TPACPI_VOL_MODE_AUTO ||
7700 volume_mode == TPACPI_VOL_MODE_MAX) {
7701 volume_mode = TPACPI_VOL_MODE_ECNVRAM;
7702
7703 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER,
7704 "driver auto-selected volume_mode=%d\n",
7705 volume_mode);
7706 } else {
7707 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER,
7708 "using user-supplied volume_mode=%d\n",
7709 volume_mode);
7710 }
7711
7712 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER,
a112ceee
HMH		 7713 "mute is supported, volume control is %s\n",
7714 str_supported(!tp_features.mixer_no_level_control));
329e4e18 7715
9a417ec0
AL		 7716 if (software_mute_requested && volume_set_software_mute(true) == 0) {
7717 software_mute_active = true;
7718 } else {
7719 rc = volume_create_alsa_mixer();
7720 if (rc) {
7721 pr_err("Could not create the ALSA mixer interface\n");
7722 return rc;
7723 }
0d204c34 7724
9a417ec0
AL		 7725 pr_info("Console audio control enabled, mode: %s\n",
7726 (volume_control_allowed) ?
7727 "override (read/write)" :
7728 "monitor (read only)");
7729 }
c7ac6291 7730
0d204c34
HMH		 7731 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER,
7732 "registering volume hotkeys as change notification\n");
7733 tpacpi_hotkey_driver_mask_set(hotkey_driver_mask
7734 | TP_ACPI_HKEY_VOLUP_MASK
7735 | TP_ACPI_HKEY_VOLDWN_MASK
7736 | TP_ACPI_HKEY_MUTE_MASK);
7737
329e4e18
HMH		 7738 return 0;
7739}
f74a27d4 7740
887965e6 7741static int volume_read(struct seq_file *m)
78f81cc4 7742{
329e4e18 7743 u8 status;
78f81cc4 7744
329e4e18 7745 if (volume_get_status(&status) < 0) {
887965e6 7746 seq_printf(m, "level:\t\tunreadable\n");
78f81cc4 7747 } else {
a112ceee 7748 if (tp_features.mixer_no_level_control)
887965e6 7749 seq_printf(m, "level:\t\tunsupported\n");
a112ceee 7750 else
887965e6 7751 seq_printf(m, "level:\t\t%d\n",
a112ceee
HMH		 7752 status & TP_EC_AUDIO_LVL_MSK);
7753
887965e6 7754 seq_printf(m, "mute:\t\t%s\n",
329e4e18 7755 onoff(status, TP_EC_AUDIO_MUTESW));
a112ceee 7756
c7ac6291 7757 if (volume_control_allowed) {
887965e6 7758 seq_printf(m, "commands:\tunmute, mute\n");
c7ac6291 7759 if (!tp_features.mixer_no_level_control) {
5cac62ac
AS		 7760 seq_printf(m, "commands:\tup, down\n");
7761 seq_printf(m, "commands:\tlevel <level> (<level> is 0-%d)\n",
7762 TP_EC_VOLUME_MAX);
c7ac6291 7763 }
78f81cc4
BD		 7764 }
7765 }
7766
7767 return 0;
7768}
7769
78f81cc4
BD		 7770static int volume_write(char *buf)
7771{
329e4e18
HMH		 7772 u8 s;
7773 u8 new_level, new_mute;
7774 int l;
78f81cc4 7775 char *cmd;
329e4e18 7776 int rc;
78f81cc4 7777
c7ac6291
HMH		 7778 /*
7779 * We do allow volume control at driver startup, so that the
7780 * user can set initial state through the volume=... parameter hack.
7781 */
7782 if (!volume_control_allowed && tpacpi_lifecycle != TPACPI_LIFE_INIT) {
7783 if (unlikely(!tp_warned.volume_ctrl_forbidden)) {
7784 tp_warned.volume_ctrl_forbidden = 1;
5cac62ac
AS		 7785 pr_notice("Console audio control in monitor mode, changes are not allowed\n");
7786 pr_notice("Use the volume_control=1 module parameter to enable volume control\n");
c7ac6291
HMH		 7787 }
7788 return -EPERM;
7789 }
7790
329e4e18
HMH		 7791 rc = volume_get_status(&s);
7792 if (rc < 0)
7793 return rc;
78f81cc4 7794
329e4e18
HMH		 7795 new_level = s & TP_EC_AUDIO_LVL_MSK;
7796 new_mute = s & TP_EC_AUDIO_MUTESW_MSK;
7797
7798 while ((cmd = next_cmd(&buf))) {
a112ceee
HMH		 7799 if (!tp_features.mixer_no_level_control) {
7800 if (strlencmp(cmd, "up") == 0) {
7801 if (new_mute)
7802 new_mute = 0;
7803 else if (new_level < TP_EC_VOLUME_MAX)
7804 new_level++;
7805 continue;
7806 } else if (strlencmp(cmd, "down") == 0) {
7807 if (new_mute)
7808 new_mute = 0;
7809 else if (new_level > 0)
7810 new_level--;
7811 continue;
7812 } else if (sscanf(cmd, "level %u", &l) == 1 &&
7813 l >= 0 && l <= TP_EC_VOLUME_MAX) {
7814 new_level = l;
7815 continue;
7816 }
7817 }
7818 if (strlencmp(cmd, "mute") == 0)
329e4e18 7819 new_mute = TP_EC_AUDIO_MUTESW_MSK;
a112ceee
HMH		 7820 else if (strlencmp(cmd, "unmute") == 0)
7821 new_mute = 0;
7822 else
1da177e4 7823 return -EINVAL;
329e4e18 7824 }
1da177e4 7825
a112ceee
HMH		 7826 if (tp_features.mixer_no_level_control) {
7827 tpacpi_disclose_usertask("procfs volume", "%smute\n",
7828 new_mute ? "" : "un");
7829 rc = volume_set_mute(!!new_mute);
7830 } else {
7831 tpacpi_disclose_usertask("procfs volume",
7832 "%smute and set level to %d\n",
7833 new_mute ? "" : "un", new_level);
7834 rc = volume_set_status(new_mute | new_level);
7835 }
0d204c34 7836 volume_alsa_notify_change();
78f81cc4 7837
329e4e18 7838 return (rc == -EINTR) ? -ERESTARTSYS : rc;
78f81cc4
BD		 7839}
7840
a5763f22
HMH		 7841static struct ibm_struct volume_driver_data = {
7842 .name = "volume",
7843 .read = volume_read,
7844 .write = volume_write,
329e4e18
HMH		 7845 .exit = volume_exit,
7846 .suspend = volume_suspend,
0d204c34 7847 .resume = volume_resume,
329e4e18 7848 .shutdown = volume_shutdown,
a5763f22 7849};
56b6aeb0 7850
ff850c33
HMH		 7851#else /* !CONFIG_THINKPAD_ACPI_ALSA_SUPPORT */
7852
7853#define alsa_card NULL
7854
bb55a2ee 7855static inline void volume_alsa_notify_change(void)
ff850c33
HMH		 7856{
7857}
7858
7859static int __init volume_init(struct ibm_init_struct *iibm)
7860{
0978e012 7861 pr_info("volume: disabled as there is no ALSA support in this kernel\n");
ff850c33
HMH		 7862
7863 return 1;
7864}
7865
7866static struct ibm_struct volume_driver_data = {
7867 .name = "volume",
7868};
7869
7870#endif /* CONFIG_THINKPAD_ACPI_ALSA_SUPPORT */
7871
56b6aeb0
HMH		 7872/*************************************************************************
7873 * Fan subdriver
7874 */
7875
7876/*
7877 * FAN ACCESS MODES
7878 *
efa27145 7879 * TPACPI_FAN_RD_ACPI_GFAN:
56b6aeb0
HMH		 7880 * ACPI GFAN method: returns fan level
7881 *
efa27145 7882 * see TPACPI_FAN_WR_ACPI_SFAN
f51d1a39 7883 * EC 0x2f (HFSP) not available if GFAN exists
56b6aeb0 7884 *
efa27145 7885 * TPACPI_FAN_WR_ACPI_SFAN:
56b6aeb0
HMH		 7886 * ACPI SFAN method: sets fan level, 0 (stop) to 7 (max)
7887 *
f51d1a39
HMH		 7888 * EC 0x2f (HFSP) might be available *for reading*, but do not use
7889 * it for writing.
56b6aeb0 7890 *
efa27145 7891 * TPACPI_FAN_WR_TPEC:
f51d1a39
HMH		 7892 * ThinkPad EC register 0x2f (HFSP): fan control loop mode
7893 * Supported on almost all ThinkPads
56b6aeb0
HMH		 7894 *
7895 * Fan speed changes of any sort (including those caused by the
7896 * disengaged mode) are usually done slowly by the firmware as the
9ddc5b6f 7897 * maximum amount of fan duty cycle change per second seems to be
56b6aeb0
HMH		 7898 * limited.
7899 *
7900 * Reading is not available if GFAN exists.
7901 * Writing is not available if SFAN exists.
7902 *
7903 * Bits
7904 * 7 automatic mode engaged;
7905 * (default operation mode of the ThinkPad)
7906 * fan level is ignored in this mode.
f51d1a39 7907 * 6 full speed mode (takes precedence over bit 7);
56b6aeb0 7908 * not available on all thinkpads. May disable
f51d1a39
HMH		 7909 * the tachometer while the fan controller ramps up
7910 * the speed (which can take up to a few *minutes*).
7911 * Speeds up fan to 100% duty-cycle, which is far above
7912 * the standard RPM levels. It is not impossible that
7913 * it could cause hardware damage.
56b6aeb0
HMH		 7914 * 5-3 unused in some models. Extra bits for fan level
7915 * in others, but still useless as all values above
7916 * 7 map to the same speed as level 7 in these models.
7917 * 2-0 fan level (0..7 usually)
7918 * 0x00 = stop
7919 * 0x07 = max (set when temperatures critical)
7920 * Some ThinkPads may have other levels, see
efa27145 7921 * TPACPI_FAN_WR_ACPI_FANS (X31/X40/X41)
56b6aeb0
HMH		 7922 *
7923 * FIRMWARE BUG: on some models, EC 0x2f might not be initialized at
b595076a 7924 * boot. Apparently the EC does not initialize it, so unless ACPI DSDT
56b6aeb0
HMH		 7925 * does so, its initial value is meaningless (0x07).
7926 *
7927 * For firmware bugs, refer to:
7928 * http://thinkwiki.org/wiki/Embedded_Controller_Firmware#Firmware_Issues
7929 *
7930 * ----
7931 *
7932 * ThinkPad EC register 0x84 (LSB), 0x85 (MSB):
7933 * Main fan tachometer reading (in RPM)
7934 *
7935 * This register is present on all ThinkPads with a new-style EC, and
7936 * it is known not to be present on the A21m/e, and T22, as there is
7937 * something else in offset 0x84 according to the ACPI DSDT. Other
7938 * ThinkPads from this same time period (and earlier) probably lack the
7939 * tachometer as well.
7940 *
877d0310 7941 * Unfortunately a lot of ThinkPads with new-style ECs but whose firmware
56b6aeb0
HMH		 7942 * was never fixed by IBM to report the EC firmware version string
7943 * probably support the tachometer (like the early X models), so
7944 * detecting it is quite hard. We need more data to know for sure.
7945 *
7946 * FIRMWARE BUG: always read 0x84 first, otherwise incorrect readings
7947 * might result.
7948 *
f51d1a39
HMH		 7949 * FIRMWARE BUG: may go stale while the EC is switching to full speed
7950 * mode.
56b6aeb0
HMH		 7951 *
7952 * For firmware bugs, refer to:
7953 * http://thinkwiki.org/wiki/Embedded_Controller_Firmware#Firmware_Issues
7954 *
d7377247
HMH		 7955 * ----
7956 *
7957 * ThinkPad EC register 0x31 bit 0 (only on select models)
7958 *
7959 * When bit 0 of EC register 0x31 is zero, the tachometer registers
7960 * show the speed of the main fan. When bit 0 of EC register 0x31
7961 * is one, the tachometer registers show the speed of the auxiliary
7962 * fan.
7963 *
7964 * Fan control seems to affect both fans, regardless of the state
7965 * of this bit.
7966 *
7967 * So far, only the firmware for the X60/X61 non-tablet versions
7968 * seem to support this (firmware TP-7M).
7969 *
efa27145 7970 * TPACPI_FAN_WR_ACPI_FANS:
56b6aeb0
HMH		 7971 * ThinkPad X31, X40, X41. Not available in the X60.
7972 *
7973 * FANS ACPI handle: takes three arguments: low speed, medium speed,
7974 * high speed. ACPI DSDT seems to map these three speeds to levels
7975 * as follows: STOP LOW LOW MED MED HIGH HIGH HIGH HIGH
7976 * (this map is stored on FAN0..FAN8 as "0,1,1,2,2,3,3,3,3")
7977 *
7978 * The speeds are stored on handles
7979 * (FANA:FAN9), (FANC:FANB), (FANE:FAND).
7980 *
af901ca1 7981 * There are three default speed sets, accessible as handles:
56b6aeb0
HMH		 7982 * FS1L,FS1M,FS1H; FS2L,FS2M,FS2H; FS3L,FS3M,FS3H
7983 *
7984 * ACPI DSDT switches which set is in use depending on various
7985 * factors.
7986 *
efa27145 7987 * TPACPI_FAN_WR_TPEC is also available and should be used to
56b6aeb0
HMH		 7988 * command the fan. The X31/X40/X41 seems to have 8 fan levels,
7989 * but the ACPI tables just mention level 7.
7990 */
7991
f74a27d4
HMH		 7992enum { /* Fan control constants */
7993 fan_status_offset = 0x2f, /* EC register 0x2f */
7994 fan_rpm_offset = 0x84, /* EC register 0x84: LSB, 0x85 MSB (RPM)
7995 * 0x84 must be read before 0x85 */
d7377247
HMH		 7996 fan_select_offset = 0x31, /* EC register 0x31 (Firmware 7M)
7997 bit 0 selects which fan is active */
f74a27d4
HMH		 7998
7999 TP_EC_FAN_FULLSPEED = 0x40, /* EC fan mode: full speed */
8000 TP_EC_FAN_AUTO = 0x80, /* EC fan mode: auto fan control */
8001
8002 TPACPI_FAN_LAST_LEVEL = 0x100, /* Use cached last-seen fan level */
8003};
8004
8005enum fan_status_access_mode {
8006 TPACPI_FAN_NONE = 0, /* No fan status or control */
8007 TPACPI_FAN_RD_ACPI_GFAN, /* Use ACPI GFAN */
8008 TPACPI_FAN_RD_TPEC, /* Use ACPI EC regs 0x2f, 0x84-0x85 */
8009};
8010
8011enum fan_control_access_mode {
8012 TPACPI_FAN_WR_NONE = 0, /* No fan control */
8013 TPACPI_FAN_WR_ACPI_SFAN, /* Use ACPI SFAN */
8014 TPACPI_FAN_WR_TPEC, /* Use ACPI EC reg 0x2f */
8015 TPACPI_FAN_WR_ACPI_FANS, /* Use ACPI FANS and EC reg 0x2f */
8016};
8017
8018enum fan_control_commands {
8019 TPACPI_FAN_CMD_SPEED = 0x0001, /* speed command */
8020 TPACPI_FAN_CMD_LEVEL = 0x0002, /* level command */
8021 TPACPI_FAN_CMD_ENABLE = 0x0004, /* enable/disable cmd,
8022 * and also watchdog cmd */
8023};
8024
90ab5ee9 8025static bool fan_control_allowed;
f74a27d4 8026
69ba91cb
HMH		 8027static enum fan_status_access_mode fan_status_access_mode;
8028static enum fan_control_access_mode fan_control_access_mode;
8029static enum fan_control_commands fan_control_commands;
78f81cc4 8030
778b4d74 8031static u8 fan_control_initial_status;
fe98a52c 8032static u8 fan_control_desired_level;
0081b162 8033static u8 fan_control_resume_level;
f74a27d4
HMH		 8034static int fan_watchdog_maxinterval;
8035
8036static struct mutex fan_mutex;
778b4d74 8037
25c68a33 8038static void fan_watchdog_fire(struct work_struct *ignored);
25c68a33 8039static DECLARE_DELAYED_WORK(fan_watchdog_task, fan_watchdog_fire);
16663a87 8040
e0c7dfe7
HMH		 8041TPACPI_HANDLE(fans, ec, "FANS"); /* X31, X40, X41 */
8042TPACPI_HANDLE(gfan, ec, "GFAN", /* 570 */
56b6aeb0
HMH		 8043 "\\FSPD", /* 600e/x, 770e, 770x */
8044 ); /* all others */
e0c7dfe7 8045TPACPI_HANDLE(sfan, ec, "SFAN", /* 570 */
56b6aeb0
HMH		 8046 "JFNS", /* 770x-JL */
8047 ); /* all others */
8048
1c2ece75
HMH		 8049/*
8050 * Unitialized HFSP quirk: ACPI DSDT and EC fail to initialize the
8051 * HFSP register at boot, so it contains 0x07 but the Thinkpad could
8052 * be in auto mode (0x80).
8053 *
8054 * This is corrected by any write to HFSP either by the driver, or
8055 * by the firmware.
8056 *
8057 * We assume 0x07 really means auto mode while this quirk is active,
8058 * as this is far more likely than the ThinkPad being in level 7,
8059 * which is only used by the firmware during thermal emergencies.
7d95a3d5
HMH		 8060 *
8061 * Enable for TP-1Y (T43), TP-78 (R51e), TP-76 (R52),
8062 * TP-70 (T43, R52), which are known to be buggy.
1c2ece75
HMH		 8063 */
8064
7d95a3d5 8065static void fan_quirk1_setup(void)
1c2ece75 8066{
1c2ece75 8067 if (fan_control_initial_status == 0x07) {
5cac62ac 8068 pr_notice("fan_init: initial fan status is unknown, assuming it is in auto mode\n");
7d95a3d5 8069 tp_features.fan_ctrl_status_undef = 1;
1c2ece75
HMH		 8070 }
8071}
8072
8073static void fan_quirk1_handle(u8 *fan_status)
8074{
8075 if (unlikely(tp_features.fan_ctrl_status_undef)) {
8076 if (*fan_status != fan_control_initial_status) {
8077 /* something changed the HFSP regisnter since
8078 * driver init time, so it is not undefined
8079 * anymore */
8080 tp_features.fan_ctrl_status_undef = 0;
8081 } else {
8082 /* Return most likely status. In fact, it
8083 * might be the only possible status */
8084 *fan_status = TP_EC_FAN_AUTO;
8085 }
8086 }
8087}
8088
d7377247
HMH		 8089/* Select main fan on X60/X61, NOOP on others */
8090static bool fan_select_fan1(void)
8091{
8092 if (tp_features.second_fan) {
8093 u8 val;
8094
8095 if (ec_read(fan_select_offset, &val) < 0)
8096 return false;
8097 val &= 0xFEU;
8098 if (ec_write(fan_select_offset, val) < 0)
8099 return false;
8100 }
8101 return true;
8102}
8103
8104/* Select secondary fan on X60/X61 */
8105static bool fan_select_fan2(void)
8106{
8107 u8 val;
8108
8109 if (!tp_features.second_fan)
8110 return false;
8111
8112 if (ec_read(fan_select_offset, &val) < 0)
8113 return false;
8114 val |= 0x01U;
8115 if (ec_write(fan_select_offset, val) < 0)
8116 return false;
8117
8118 return true;
8119}
8120
fe98a52c 8121/*
b21a15f6 8122 * Call with fan_mutex held
fe98a52c 8123 */
b21a15f6 8124static void fan_update_desired_level(u8 status)
fe98a52c 8125{
b21a15f6
HMH		 8126 if ((status &
8127 (TP_EC_FAN_AUTO | TP_EC_FAN_FULLSPEED)) == 0) {
8128 if (status > 7)
8129 fan_control_desired_level = 7;
8130 else
8131 fan_control_desired_level = status;
8132 }
8133}
fe98a52c 8134
b21a15f6
HMH		 8135static int fan_get_status(u8 *status)
8136{
8137 u8 s;
fe98a52c 8138
b21a15f6
HMH		 8139 /* TODO:
8140 * Add TPACPI_FAN_RD_ACPI_FANS ? */
fe98a52c 8141
b21a15f6 8142 switch (fan_status_access_mode) {
eceeb437 8143 case TPACPI_FAN_RD_ACPI_GFAN: {
b21a15f6 8144 /* 570, 600e/x, 770e, 770x */
eceeb437 8145 int res;
fe98a52c 8146
eceeb437 8147 if (unlikely(!acpi_evalf(gfan_handle, &res, NULL, "d")))
b21a15f6 8148 return -EIO;
fe98a52c 8149
b21a15f6 8150 if (likely(status))
eceeb437 8151 *status = res & 0x07;
fe98a52c 8152
b21a15f6 8153 break;
eceeb437 8154 }
b21a15f6
HMH		 8155 case TPACPI_FAN_RD_TPEC:
8156 /* all except 570, 600e/x, 770e, 770x */
8157 if (unlikely(!acpi_ec_read(fan_status_offset, &s)))
8158 return -EIO;
8159
1c2ece75 8160 if (likely(status)) {
b21a15f6 8161 *status = s;
1c2ece75
HMH		 8162 fan_quirk1_handle(status);
8163 }
fe98a52c 8164
fe98a52c 8165 break;
b21a15f6 8166
fe98a52c 8167 default:
b21a15f6 8168 return -ENXIO;
fe98a52c
HMH		 8169 }
8170
b21a15f6
HMH		 8171 return 0;
8172}
fe98a52c 8173
b21a15f6
HMH		 8174static int fan_get_status_safe(u8 *status)
8175{
8176 int rc;
8177 u8 s;
fe98a52c 8178
7646ea88 8179 if (mutex_lock_killable(&fan_mutex))
b21a15f6
HMH		 8180 return -ERESTARTSYS;
8181 rc = fan_get_status(&s);
8182 if (!rc)
8183 fan_update_desired_level(s);
8184 mutex_unlock(&fan_mutex);
fe98a52c 8185
a7718360
DC		 8186 if (rc)
8187 return rc;
b21a15f6
HMH		 8188 if (status)
8189 *status = s;
fe98a52c 8190
a7718360 8191 return 0;
b21a15f6
HMH		 8192}
8193
8194static int fan_get_speed(unsigned int *speed)
fe98a52c 8195{
b21a15f6 8196 u8 hi, lo;
fe98a52c 8197
b21a15f6
HMH		 8198 switch (fan_status_access_mode) {
8199 case TPACPI_FAN_RD_TPEC:
8200 /* all except 570, 600e/x, 770e, 770x */
d7377247
HMH		 8201 if (unlikely(!fan_select_fan1()))
8202 return -EIO;
b21a15f6
HMH		 8203 if (unlikely(!acpi_ec_read(fan_rpm_offset, &lo) ||
8204 !acpi_ec_read(fan_rpm_offset + 1, &hi)))
8205 return -EIO;
fe98a52c 8206
b21a15f6
HMH		 8207 if (likely(speed))
8208 *speed = (hi << 8) | lo;
fe98a52c 8209
b21a15f6 8210 break;
fe98a52c 8211
b21a15f6
HMH		 8212 default:
8213 return -ENXIO;
8214 }
fe98a52c 8215
b21a15f6 8216 return 0;
fe98a52c
HMH		 8217}
8218
d7377247
HMH		 8219static int fan2_get_speed(unsigned int *speed)
8220{
8221 u8 hi, lo;
8222 bool rc;
8223
8224 switch (fan_status_access_mode) {
8225 case TPACPI_FAN_RD_TPEC:
8226 /* all except 570, 600e/x, 770e, 770x */
8227 if (unlikely(!fan_select_fan2()))
8228 return -EIO;
8229 rc = !acpi_ec_read(fan_rpm_offset, &lo) ||
8230 !acpi_ec_read(fan_rpm_offset + 1, &hi);
8231 fan_select_fan1(); /* play it safe */
8232 if (rc)
8233 return -EIO;
8234
8235 if (likely(speed))
8236 *speed = (hi << 8) | lo;
8237
8238 break;
8239
8240 default:
8241 return -ENXIO;
8242 }
8243
8244 return 0;
8245}
8246
b21a15f6 8247static int fan_set_level(int level)
fe98a52c 8248{
b21a15f6
HMH		 8249 if (!fan_control_allowed)
8250 return -EPERM;
fe98a52c 8251
b21a15f6
HMH		 8252 switch (fan_control_access_mode) {
8253 case TPACPI_FAN_WR_ACPI_SFAN:
8254 if (level >= 0 && level <= 7) {
8255 if (!acpi_evalf(sfan_handle, NULL, NULL, "vd", level))
8256 return -EIO;
8257 } else
8258 return -EINVAL;
8259 break;
fe98a52c 8260
b21a15f6
HMH		 8261 case TPACPI_FAN_WR_ACPI_FANS:
8262 case TPACPI_FAN_WR_TPEC:
0081b162
HMH		 8263 if (!(level & TP_EC_FAN_AUTO) &&
8264 !(level & TP_EC_FAN_FULLSPEED) &&
b21a15f6
HMH		 8265 ((level < 0) || (level > 7)))
8266 return -EINVAL;
fe98a52c 8267
b21a15f6
HMH		 8268 /* safety net should the EC not support AUTO
8269 * or FULLSPEED mode bits and just ignore them */
8270 if (level & TP_EC_FAN_FULLSPEED)
8271 level |= 7; /* safety min speed 7 */
547266e4 8272 else if (level & TP_EC_FAN_AUTO)
b21a15f6 8273 level |= 4; /* safety min speed 4 */
fe98a52c 8274
b21a15f6
HMH		 8275 if (!acpi_ec_write(fan_status_offset, level))
8276 return -EIO;
8277 else
8278 tp_features.fan_ctrl_status_undef = 0;
8279 break;
fe98a52c 8280
b21a15f6
HMH		 8281 default:
8282 return -ENXIO;
8283 }
74a60c0f
HMH		 8284
8285 vdbg_printk(TPACPI_DBG_FAN,
8286 "fan control: set fan control register to 0x%02x\n", level);
b21a15f6 8287 return 0;
fe98a52c
HMH		 8288}
8289
b21a15f6 8290static int fan_set_level_safe(int level)
fe98a52c 8291{
b21a15f6 8292 int rc;
fe98a52c 8293
b21a15f6
HMH		 8294 if (!fan_control_allowed)
8295 return -EPERM;
fe98a52c 8296
7646ea88 8297 if (mutex_lock_killable(&fan_mutex))
b21a15f6 8298 return -ERESTARTSYS;
fe98a52c 8299
b21a15f6
HMH		 8300 if (level == TPACPI_FAN_LAST_LEVEL)
8301 level = fan_control_desired_level;
fe98a52c 8302
b21a15f6
HMH		 8303 rc = fan_set_level(level);
8304 if (!rc)
8305 fan_update_desired_level(level);
8306
8307 mutex_unlock(&fan_mutex);
8308 return rc;
fe98a52c
HMH		 8309}
8310
b21a15f6 8311static int fan_set_enable(void)
fe98a52c 8312{
b21a15f6
HMH		 8313 u8 s;
8314 int rc;
fe98a52c 8315
ecf2a80a
HMH		 8316 if (!fan_control_allowed)
8317 return -EPERM;
8318
7646ea88 8319 if (mutex_lock_killable(&fan_mutex))
b21a15f6 8320 return -ERESTARTSYS;
fe98a52c 8321
b21a15f6
HMH		 8322 switch (fan_control_access_mode) {
8323 case TPACPI_FAN_WR_ACPI_FANS:
8324 case TPACPI_FAN_WR_TPEC:
8325 rc = fan_get_status(&s);
8326 if (rc < 0)
8327 break;
fe98a52c 8328
b21a15f6
HMH		 8329 /* Don't go out of emergency fan mode */
8330 if (s != 7) {
8331 s &= 0x07;
8332 s |= TP_EC_FAN_AUTO | 4; /* min fan speed 4 */
8333 }
fe98a52c 8334
b21a15f6
HMH		 8335 if (!acpi_ec_write(fan_status_offset, s))
8336 rc = -EIO;
8337 else {
8338 tp_features.fan_ctrl_status_undef = 0;
8339 rc = 0;
8340 }
8341 break;
fe98a52c 8342
b21a15f6
HMH		 8343 case TPACPI_FAN_WR_ACPI_SFAN:
8344 rc = fan_get_status(&s);
8345 if (rc < 0)
8346 break;
fe98a52c 8347
b21a15f6 8348 s &= 0x07;
fe98a52c 8349
b21a15f6
HMH		 8350 /* Set fan to at least level 4 */
8351 s |= 4;
fe08bc4b 8352
b21a15f6 8353 if (!acpi_evalf(sfan_handle, NULL, NULL, "vd", s))
35ff8b9f 8354 rc = -EIO;
b21a15f6
HMH		 8355 else
8356 rc = 0;
8357 break;
78f81cc4 8358
b21a15f6
HMH		 8359 default:
8360 rc = -ENXIO;
8361 }
5fba344c 8362
b21a15f6 8363 mutex_unlock(&fan_mutex);
74a60c0f
HMH		 8364
8365 if (!rc)
8366 vdbg_printk(TPACPI_DBG_FAN,
8367 "fan control: set fan control register to 0x%02x\n",
8368 s);
b21a15f6 8369 return rc;
69ba91cb 8370}
78f81cc4 8371
b21a15f6 8372static int fan_set_disable(void)
78f81cc4 8373{
b21a15f6 8374 int rc;
c52f0aa5 8375
b21a15f6
HMH		 8376 if (!fan_control_allowed)
8377 return -EPERM;
78f81cc4 8378
7646ea88 8379 if (mutex_lock_killable(&fan_mutex))
b21a15f6 8380 return -ERESTARTSYS;
3ef8a609 8381
b21a15f6
HMH		 8382 rc = 0;
8383 switch (fan_control_access_mode) {
8384 case TPACPI_FAN_WR_ACPI_FANS:
8385 case TPACPI_FAN_WR_TPEC:
8386 if (!acpi_ec_write(fan_status_offset, 0x00))
8387 rc = -EIO;
8388 else {
8389 fan_control_desired_level = 0;
8390 tp_features.fan_ctrl_status_undef = 0;
8391 }
3ef8a609
HMH		 8392 break;
8393
b21a15f6
HMH		 8394 case TPACPI_FAN_WR_ACPI_SFAN:
8395 if (!acpi_evalf(sfan_handle, NULL, NULL, "vd", 0x00))
8396 rc = -EIO;
8397 else
8398 fan_control_desired_level = 0;
c52f0aa5
HMH		 8399 break;
8400
8401 default:
b21a15f6 8402 rc = -ENXIO;
78f81cc4
BD		 8403 }
8404
74a60c0f
HMH		 8405 if (!rc)
8406 vdbg_printk(TPACPI_DBG_FAN,
8407 "fan control: set fan control register to 0\n");
fe98a52c 8408
fe98a52c 8409 mutex_unlock(&fan_mutex);
fe98a52c
HMH		 8410 return rc;
8411}
8412
b21a15f6 8413static int fan_set_speed(int speed)
c52f0aa5 8414{
b21a15f6 8415 int rc;
c52f0aa5 8416
b21a15f6
HMH		 8417 if (!fan_control_allowed)
8418 return -EPERM;
3ef8a609 8419
7646ea88 8420 if (mutex_lock_killable(&fan_mutex))
b21a15f6 8421 return -ERESTARTSYS;
c52f0aa5 8422
b21a15f6
HMH		 8423 rc = 0;
8424 switch (fan_control_access_mode) {
8425 case TPACPI_FAN_WR_ACPI_FANS:
8426 if (speed >= 0 && speed <= 65535) {
8427 if (!acpi_evalf(fans_handle, NULL, NULL, "vddd",
8428 speed, speed, speed))
8429 rc = -EIO;
8430 } else
8431 rc = -EINVAL;
c52f0aa5
HMH		 8432 break;
8433
8434 default:
b21a15f6 8435 rc = -ENXIO;
c52f0aa5
HMH		 8436 }
8437
b21a15f6
HMH		 8438 mutex_unlock(&fan_mutex);
8439 return rc;
16663a87
HMH		 8440}
8441
8442static void fan_watchdog_reset(void)
8443{
4985cd0a
HMH		 8444 if (fan_control_access_mode == TPACPI_FAN_WR_NONE)
8445 return;
8446
8fef502e 8447 if (fan_watchdog_maxinterval > 0 &&
41f63c53
TH		 8448 tpacpi_lifecycle != TPACPI_LIFE_EXITING)
8449 mod_delayed_work(tpacpi_wq, &fan_watchdog_task,
8450 msecs_to_jiffies(fan_watchdog_maxinterval * 1000));
8451 else
8452 cancel_delayed_work(&fan_watchdog_task);
16663a87
HMH		 8453}
8454
b21a15f6 8455static void fan_watchdog_fire(struct work_struct *ignored)
78f81cc4 8456{
b21a15f6 8457 int rc;
18ad7996 8458
b21a15f6
HMH		 8459 if (tpacpi_lifecycle != TPACPI_LIFE_RUNNING)
8460 return;
a12095c2 8461
0978e012 8462 pr_notice("fan watchdog: enabling fan\n");
b21a15f6
HMH		 8463 rc = fan_set_enable();
8464 if (rc < 0) {
5cac62ac
AS		 8465 pr_err("fan watchdog: error %d while enabling fan, will try again later...\n",
8466 rc);
b21a15f6
HMH		 8467 /* reschedule for later */
8468 fan_watchdog_reset();
8469 }
8470}
eaa7571b 8471
b21a15f6
HMH		 8472/*
8473 * SYSFS fan layout: hwmon compatible (device)
8474 *
8475 * pwm*_enable:
8476 * 0: "disengaged" mode
8477 * 1: manual mode
8478 * 2: native EC "auto" mode (recommended, hardware default)
8479 *
8480 * pwm*: set speed in manual mode, ignored otherwise.
8481 * 0 is level 0; 255 is level 7. Intermediate points done with linear
8482 * interpolation.
8483 *
8484 * fan*_input: tachometer reading, RPM
8485 *
8486 *
8487 * SYSFS fan layout: extensions
8488 *
8489 * fan_watchdog (driver):
8490 * fan watchdog interval in seconds, 0 disables (default), max 120
8491 */
8492
8493/* sysfs fan pwm1_enable ----------------------------------------------- */
8494static ssize_t fan_pwm1_enable_show(struct device *dev,
8495 struct device_attribute *attr,
8496 char *buf)
8497{
8498 int res, mode;
8499 u8 status;
8500
8501 res = fan_get_status_safe(&status);
8502 if (res)
8503 return res;
8504
b21a15f6
HMH		 8505 if (status & TP_EC_FAN_FULLSPEED) {
8506 mode = 0;
8507 } else if (status & TP_EC_FAN_AUTO) {
8508 mode = 2;
8509 } else
8510 mode = 1;
8511
8512 return snprintf(buf, PAGE_SIZE, "%d\n", mode);
8513}
a12095c2 8514
b21a15f6
HMH		 8515static ssize_t fan_pwm1_enable_store(struct device *dev,
8516 struct device_attribute *attr,
8517 const char *buf, size_t count)
8518{
8519 unsigned long t;
8520 int res, level;
8521
8522 if (parse_strtoul(buf, 2, &t))
8523 return -EINVAL;
8524
74a60c0f
HMH		 8525 tpacpi_disclose_usertask("hwmon pwm1_enable",
8526 "set fan mode to %lu\n", t);
8527
b21a15f6
HMH		 8528 switch (t) {
8529 case 0:
8530 level = TP_EC_FAN_FULLSPEED;
8531 break;
8532 case 1:
8533 level = TPACPI_FAN_LAST_LEVEL;
8534 break;
8535 case 2:
8536 level = TP_EC_FAN_AUTO;
8537 break;
8538 case 3:
8539 /* reserved for software-controlled auto mode */
8540 return -ENOSYS;
18ad7996 8541 default:
b21a15f6 8542 return -EINVAL;
18ad7996 8543 }
b21a15f6
HMH		 8544
8545 res = fan_set_level_safe(level);
8546 if (res == -ENXIO)
8547 return -EINVAL;
8548 else if (res < 0)
8549 return res;
8550
8551 fan_watchdog_reset();
8552
8553 return count;
18ad7996
HMH		 8554}
8555
5fb73bc2
BM		 8556static DEVICE_ATTR(pwm1_enable, S_IWUSR | S_IRUGO,
8557 fan_pwm1_enable_show, fan_pwm1_enable_store);
b21a15f6
HMH		 8558
8559/* sysfs fan pwm1 ------------------------------------------------------ */
8560static ssize_t fan_pwm1_show(struct device *dev,
8561 struct device_attribute *attr,
8562 char *buf)
fe98a52c 8563{
b21a15f6
HMH		 8564 int res;
8565 u8 status;
fe98a52c 8566
b21a15f6
HMH		 8567 res = fan_get_status_safe(&status);
8568 if (res)
8569 return res;
ecf2a80a 8570
b21a15f6
HMH		 8571 if ((status &
8572 (TP_EC_FAN_AUTO | TP_EC_FAN_FULLSPEED)) != 0)
8573 status = fan_control_desired_level;
fe98a52c 8574
b21a15f6
HMH		 8575 if (status > 7)
8576 status = 7;
fe98a52c 8577
b21a15f6 8578 return snprintf(buf, PAGE_SIZE, "%u\n", (status * 255) / 7);
fe98a52c
HMH		 8579}
8580
b21a15f6
HMH		 8581static ssize_t fan_pwm1_store(struct device *dev,
8582 struct device_attribute *attr,
8583 const char *buf, size_t count)
18ad7996 8584{
b21a15f6 8585 unsigned long s;
1c6a334e 8586 int rc;
b21a15f6 8587 u8 status, newlevel;
1c6a334e 8588
b21a15f6
HMH		 8589 if (parse_strtoul(buf, 255, &s))
8590 return -EINVAL;
8591
74a60c0f
HMH		 8592 tpacpi_disclose_usertask("hwmon pwm1",
8593 "set fan speed to %lu\n", s);
8594
b21a15f6
HMH		 8595 /* scale down from 0-255 to 0-7 */
8596 newlevel = (s >> 5) & 0x07;
ecf2a80a 8597
7646ea88 8598 if (mutex_lock_killable(&fan_mutex))
fc589a3c 8599 return -ERESTARTSYS;
40ca9fdf 8600
b21a15f6
HMH		 8601 rc = fan_get_status(&status);
8602 if (!rc && (status &
8603 (TP_EC_FAN_AUTO | TP_EC_FAN_FULLSPEED)) == 0) {
8604 rc = fan_set_level(newlevel);
8605 if (rc == -ENXIO)
8606 rc = -EINVAL;
8607 else if (!rc) {
8608 fan_update_desired_level(newlevel);
8609 fan_watchdog_reset();
eaa7571b 8610 }
b21a15f6 8611 }
1c6a334e 8612
b21a15f6 8613 mutex_unlock(&fan_mutex);
72a979f0 8614 return (rc) ? rc : count;
b21a15f6 8615}
1c6a334e 8616
5fb73bc2 8617static DEVICE_ATTR(pwm1, S_IWUSR | S_IRUGO, fan_pwm1_show, fan_pwm1_store);
1c6a334e 8618
b21a15f6
HMH		 8619/* sysfs fan fan1_input ------------------------------------------------ */
8620static ssize_t fan_fan1_input_show(struct device *dev,
8621 struct device_attribute *attr,
8622 char *buf)
8623{
8624 int res;
8625 unsigned int speed;
1c6a334e 8626
b21a15f6
HMH		 8627 res = fan_get_speed(&speed);
8628 if (res < 0)
8629 return res;
1c6a334e 8630
b21a15f6
HMH		 8631 return snprintf(buf, PAGE_SIZE, "%u\n", speed);
8632}
18ad7996 8633
5fb73bc2 8634static DEVICE_ATTR(fan1_input, S_IRUGO, fan_fan1_input_show, NULL);
40ca9fdf 8635
d7377247
HMH		 8636/* sysfs fan fan2_input ------------------------------------------------ */
8637static ssize_t fan_fan2_input_show(struct device *dev,
8638 struct device_attribute *attr,
8639 char *buf)
8640{
8641 int res;
8642 unsigned int speed;
8643
8644 res = fan2_get_speed(&speed);
8645 if (res < 0)
8646 return res;
8647
8648 return snprintf(buf, PAGE_SIZE, "%u\n", speed);
8649}
8650
5fb73bc2 8651static DEVICE_ATTR(fan2_input, S_IRUGO, fan_fan2_input_show, NULL);
d7377247 8652
b21a15f6 8653/* sysfs fan fan_watchdog (hwmon driver) ------------------------------- */
ac3054c4 8654static ssize_t fan_watchdog_show(struct device_driver *drv, char *buf)
b21a15f6
HMH		 8655{
8656 return snprintf(buf, PAGE_SIZE, "%u\n", fan_watchdog_maxinterval);
18ad7996
HMH		 8657}
8658
ac3054c4
GKH		 8659static ssize_t fan_watchdog_store(struct device_driver *drv, const char *buf,
8660 size_t count)
18ad7996 8661{
b21a15f6
HMH		 8662 unsigned long t;
8663
8664 if (parse_strtoul(buf, 120, &t))
8665 return -EINVAL;
40ca9fdf 8666
ecf2a80a
HMH		 8667 if (!fan_control_allowed)
8668 return -EPERM;
8669
b21a15f6
HMH		 8670 fan_watchdog_maxinterval = t;
8671 fan_watchdog_reset();
40ca9fdf 8672
74a60c0f
HMH		 8673 tpacpi_disclose_usertask("fan_watchdog", "set to %lu\n", t);
8674
b21a15f6
HMH		 8675 return count;
8676}
ac3054c4 8677static DRIVER_ATTR_RW(fan_watchdog);
b21a15f6
HMH		 8678
8679/* --------------------------------------------------------------------- */
8680static struct attribute *fan_attributes[] = {
5fb73bc2
BM		 8681 &dev_attr_pwm1_enable.attr, &dev_attr_pwm1.attr,
8682 &dev_attr_fan1_input.attr,
d7377247 8683 NULL, /* for fan2_input */
b21a15f6
HMH		 8684 NULL
8685};
8686
8687static const struct attribute_group fan_attr_group = {
8688 .attrs = fan_attributes,
8689};
8690
d7377247
HMH		 8691#define TPACPI_FAN_Q1 0x0001 /* Unitialized HFSP */
8692#define TPACPI_FAN_2FAN 0x0002 /* EC 0x31 bit 0 selects fan2 */
7d95a3d5
HMH		 8693
8694#define TPACPI_FAN_QI(__id1, __id2, __quirks) \
8695 { .vendor = PCI_VENDOR_ID_IBM, \
8696 .bios = TPACPI_MATCH_ANY, \
8697 .ec = TPID(__id1, __id2), \
8698 .quirks = __quirks }
8699
d7377247
HMH		 8700#define TPACPI_FAN_QL(__id1, __id2, __quirks) \
8701 { .vendor = PCI_VENDOR_ID_LENOVO, \
8702 .bios = TPACPI_MATCH_ANY, \
8703 .ec = TPID(__id1, __id2), \
8704 .quirks = __quirks }
8705
a986c75a
AK		 8706#define TPACPI_FAN_QB(__id1, __id2, __quirks) \
8707 { .vendor = PCI_VENDOR_ID_LENOVO, \
8708 .bios = TPID(__id1, __id2), \
8709 .ec = TPACPI_MATCH_ANY, \
8710 .quirks = __quirks }
8711
7d95a3d5
HMH		 8712static const struct tpacpi_quirk fan_quirk_table[] __initconst = {
8713 TPACPI_FAN_QI('1', 'Y', TPACPI_FAN_Q1),
8714 TPACPI_FAN_QI('7', '8', TPACPI_FAN_Q1),
8715 TPACPI_FAN_QI('7', '6', TPACPI_FAN_Q1),
8716 TPACPI_FAN_QI('7', '0', TPACPI_FAN_Q1),
d7377247 8717 TPACPI_FAN_QL('7', 'M', TPACPI_FAN_2FAN),
a986c75a 8718 TPACPI_FAN_QB('N', '1', TPACPI_FAN_2FAN),
7d95a3d5
HMH		 8719};
8720
d7377247 8721#undef TPACPI_FAN_QL
7d95a3d5 8722#undef TPACPI_FAN_QI
a986c75a 8723#undef TPACPI_FAN_QB
7d95a3d5 8724
b21a15f6
HMH		 8725static int __init fan_init(struct ibm_init_struct *iibm)
8726{
8727 int rc;
7d95a3d5 8728 unsigned long quirks;
b21a15f6 8729
74a60c0f
HMH		 8730 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_FAN,
8731 "initializing fan subdriver\n");
b21a15f6
HMH		 8732
8733 mutex_init(&fan_mutex);
8734 fan_status_access_mode = TPACPI_FAN_NONE;
8735 fan_control_access_mode = TPACPI_FAN_WR_NONE;
8736 fan_control_commands = 0;
8737 fan_watchdog_maxinterval = 0;
8738 tp_features.fan_ctrl_status_undef = 0;
d7377247 8739 tp_features.second_fan = 0;
b21a15f6
HMH		 8740 fan_control_desired_level = 7;
8741
e28393c0
HMH		 8742 if (tpacpi_is_ibm()) {
8743 TPACPI_ACPIHANDLE_INIT(fans);
8744 TPACPI_ACPIHANDLE_INIT(gfan);
8745 TPACPI_ACPIHANDLE_INIT(sfan);
8746 }
b21a15f6 8747
7d95a3d5
HMH		 8748 quirks = tpacpi_check_quirks(fan_quirk_table,
8749 ARRAY_SIZE(fan_quirk_table));
8750
b21a15f6
HMH		 8751 if (gfan_handle) {
8752 /* 570, 600e/x, 770e, 770x */
8753 fan_status_access_mode = TPACPI_FAN_RD_ACPI_GFAN;
8754 } else {
8755 /* all other ThinkPads: note that even old-style
8756 * ThinkPad ECs supports the fan control register */
8757 if (likely(acpi_ec_read(fan_status_offset,
8758 &fan_control_initial_status))) {
8759 fan_status_access_mode = TPACPI_FAN_RD_TPEC;
7d95a3d5
HMH		 8760 if (quirks & TPACPI_FAN_Q1)
8761 fan_quirk1_setup();
d7377247
HMH		 8762 if (quirks & TPACPI_FAN_2FAN) {
8763 tp_features.second_fan = 1;
8764 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_FAN,
8765 "secondary fan support enabled\n");
8766 }
b21a15f6 8767 } else {
5cac62ac 8768 pr_err("ThinkPad ACPI EC access misbehaving, fan status and control unavailable\n");
b21a15f6
HMH		 8769 return 1;
8770 }
8771 }
8772
8773 if (sfan_handle) {
8774 /* 570, 770x-JL */
8775 fan_control_access_mode = TPACPI_FAN_WR_ACPI_SFAN;
8776 fan_control_commands |=
8777 TPACPI_FAN_CMD_LEVEL | TPACPI_FAN_CMD_ENABLE;
8778 } else {
8779 if (!gfan_handle) {
8780 /* gfan without sfan means no fan control */
8781 /* all other models implement TP EC 0x2f control */
8782
8783 if (fans_handle) {
8784 /* X31, X40, X41 */
8785 fan_control_access_mode =
8786 TPACPI_FAN_WR_ACPI_FANS;
8787 fan_control_commands |=
8788 TPACPI_FAN_CMD_SPEED |
8789 TPACPI_FAN_CMD_LEVEL |
8790 TPACPI_FAN_CMD_ENABLE;
8791 } else {
8792 fan_control_access_mode = TPACPI_FAN_WR_TPEC;
8793 fan_control_commands |=
8794 TPACPI_FAN_CMD_LEVEL |
8795 TPACPI_FAN_CMD_ENABLE;
8796 }
fe98a52c 8797 }
b21a15f6 8798 }
18ad7996 8799
74a60c0f
HMH		 8800 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_FAN,
8801 "fan is %s, modes %d, %d\n",
b21a15f6
HMH		 8802 str_supported(fan_status_access_mode != TPACPI_FAN_NONE ||
8803 fan_control_access_mode != TPACPI_FAN_WR_NONE),
8804 fan_status_access_mode, fan_control_access_mode);
1c6a334e 8805
b21a15f6
HMH		 8806 /* fan control master switch */
8807 if (!fan_control_allowed) {
8808 fan_control_access_mode = TPACPI_FAN_WR_NONE;
8809 fan_control_commands = 0;
74a60c0f 8810 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_FAN,
b21a15f6 8811 "fan control features disabled by parameter\n");
18ad7996 8812 }
40ca9fdf 8813
b21a15f6
HMH		 8814 /* update fan_control_desired_level */
8815 if (fan_status_access_mode != TPACPI_FAN_NONE)
8816 fan_get_status_safe(NULL);
fe98a52c 8817
b21a15f6
HMH		 8818 if (fan_status_access_mode != TPACPI_FAN_NONE ||
8819 fan_control_access_mode != TPACPI_FAN_WR_NONE) {
d7377247
HMH		 8820 if (tp_features.second_fan) {
8821 /* attach second fan tachometer */
8822 fan_attributes[ARRAY_SIZE(fan_attributes)-2] =
5fb73bc2 8823 &dev_attr_fan2_input.attr;
d7377247 8824 }
6b99e356 8825 rc = sysfs_create_group(&tpacpi_hwmon->kobj,
b21a15f6 8826 &fan_attr_group);
b21a15f6
HMH		 8827 if (rc < 0)
8828 return rc;
9c0a76e1
HMH		 8829
8830 rc = driver_create_file(&tpacpi_hwmon_pdriver.driver,
8831 &driver_attr_fan_watchdog);
8832 if (rc < 0) {
6b99e356 8833 sysfs_remove_group(&tpacpi_hwmon->kobj,
9c0a76e1
HMH		 8834 &fan_attr_group);
8835 return rc;
8836 }
b21a15f6
HMH		 8837 return 0;
8838 } else
8839 return 1;
56b6aeb0
HMH		 8840}
8841
b21a15f6 8842static void fan_exit(void)
56b6aeb0 8843{
74a60c0f 8844 vdbg_printk(TPACPI_DBG_EXIT | TPACPI_DBG_FAN,
35ff8b9f 8845 "cancelling any pending fan watchdog tasks\n");
56b6aeb0 8846
b21a15f6 8847 /* FIXME: can we really do this unconditionally? */
6b99e356 8848 sysfs_remove_group(&tpacpi_hwmon->kobj, &fan_attr_group);
35ff8b9f
HMH		 8849 driver_remove_file(&tpacpi_hwmon_pdriver.driver,
8850 &driver_attr_fan_watchdog);
40ca9fdf 8851
b21a15f6 8852 cancel_delayed_work(&fan_watchdog_task);
e0e3c061 8853 flush_workqueue(tpacpi_wq);
56b6aeb0
HMH		 8854}
8855
fd3c3a42 8856static void fan_suspend(void)
75700e53 8857{
0081b162
HMH		 8858 int rc;
8859
75700e53
HMH		 8860 if (!fan_control_allowed)
8861 return;
8862
8863 /* Store fan status in cache */
0081b162
HMH		 8864 fan_control_resume_level = 0;
8865 rc = fan_get_status_safe(&fan_control_resume_level);
8866 if (rc < 0)
5cac62ac
AS		 8867 pr_notice("failed to read fan level for later restore during resume: %d\n",
8868 rc);
0081b162
HMH		 8869
8870 /* if it is undefined, don't attempt to restore it.
8871 * KEEP THIS LAST */
75700e53 8872 if (tp_features.fan_ctrl_status_undef)
0081b162 8873 fan_control_resume_level = 0;
75700e53
HMH		 8874}
8875
8876static void fan_resume(void)
8877{
75700e53
HMH		 8878 u8 current_level = 7;
8879 bool do_set = false;
0081b162 8880 int rc;
75700e53
HMH		 8881
8882 /* DSDT *always* updates status on resume */
8883 tp_features.fan_ctrl_status_undef = 0;
8884
75700e53 8885 if (!fan_control_allowed ||
0081b162 8886 !fan_control_resume_level ||
75700e53
HMH		 8887 (fan_get_status_safe(&current_level) < 0))
8888 return;
8889
8890 switch (fan_control_access_mode) {
8891 case TPACPI_FAN_WR_ACPI_SFAN:
0081b162
HMH		 8892 /* never decrease fan level */
8893 do_set = (fan_control_resume_level > current_level);
75700e53
HMH		 8894 break;
8895 case TPACPI_FAN_WR_ACPI_FANS:
8896 case TPACPI_FAN_WR_TPEC:
0081b162
HMH		 8897 /* never decrease fan level, scale is:
8898 * TP_EC_FAN_FULLSPEED > 7 >= TP_EC_FAN_AUTO
8899 *
8900 * We expect the firmware to set either 7 or AUTO, but we
8901 * handle FULLSPEED out of paranoia.
8902 *
8903 * So, we can safely only restore FULLSPEED or 7, anything
8904 * else could slow the fan. Restoring AUTO is useless, at
8905 * best that's exactly what the DSDT already set (it is the
8906 * slower it uses).
8907 *
8908 * Always keep in mind that the DSDT *will* have set the
8909 * fans to what the vendor supposes is the best level. We
8910 * muck with it only to speed the fan up.
8911 */
8912 if (fan_control_resume_level != 7 &&
8913 !(fan_control_resume_level & TP_EC_FAN_FULLSPEED))
8914 return;
8915 else
8916 do_set = !(current_level & TP_EC_FAN_FULLSPEED) &&
8917 (current_level != fan_control_resume_level);
75700e53
HMH		 8918 break;
8919 default:
8920 return;
8921 }
8922 if (do_set) {
0978e012
JP		 8923 pr_notice("restoring fan level to 0x%02x\n",
8924 fan_control_resume_level);
0081b162
HMH		 8925 rc = fan_set_level_safe(fan_control_resume_level);
8926 if (rc < 0)
0978e012 8927 pr_notice("failed to restore fan level: %d\n", rc);
75700e53
HMH		 8928 }
8929}
8930
887965e6 8931static int fan_read(struct seq_file *m)
56b6aeb0 8932{
56b6aeb0
HMH		 8933 int rc;
8934 u8 status;
8935 unsigned int speed = 0;
8936
8937 switch (fan_status_access_mode) {
efa27145 8938 case TPACPI_FAN_RD_ACPI_GFAN:
56b6aeb0 8939 /* 570, 600e/x, 770e, 770x */
35ff8b9f
HMH		 8940 rc = fan_get_status_safe(&status);
8941 if (rc < 0)
56b6aeb0
HMH		 8942 return rc;
8943
887965e6 8944 seq_printf(m, "status:\t\t%s\n"
56b6aeb0
HMH		 8945 "level:\t\t%d\n",
8946 (status != 0) ? "enabled" : "disabled", status);
8947 break;
8948
efa27145 8949 case TPACPI_FAN_RD_TPEC:
56b6aeb0 8950 /* all except 570, 600e/x, 770e, 770x */
35ff8b9f
HMH		 8951 rc = fan_get_status_safe(&status);
8952 if (rc < 0)
56b6aeb0
HMH		 8953 return rc;
8954
887965e6 8955 seq_printf(m, "status:\t\t%s\n",
56b6aeb0
HMH		 8956 (status != 0) ? "enabled" : "disabled");
8957
35ff8b9f
HMH		 8958 rc = fan_get_speed(&speed);
8959 if (rc < 0)
56b6aeb0
HMH		 8960 return rc;
8961
887965e6 8962 seq_printf(m, "speed:\t\t%d\n", speed);
56b6aeb0 8963
efa27145 8964 if (status & TP_EC_FAN_FULLSPEED)
56b6aeb0 8965 /* Disengaged mode takes precedence */
887965e6 8966 seq_printf(m, "level:\t\tdisengaged\n");
efa27145 8967 else if (status & TP_EC_FAN_AUTO)
887965e6 8968 seq_printf(m, "level:\t\tauto\n");
56b6aeb0 8969 else
887965e6 8970 seq_printf(m, "level:\t\t%d\n", status);
56b6aeb0
HMH		 8971 break;
8972
efa27145 8973 case TPACPI_FAN_NONE:
56b6aeb0 8974 default:
887965e6 8975 seq_printf(m, "status:\t\tnot supported\n");
56b6aeb0
HMH		 8976 }
8977
efa27145 8978 if (fan_control_commands & TPACPI_FAN_CMD_LEVEL) {
887965e6 8979 seq_printf(m, "commands:\tlevel <level>");
56b6aeb0
HMH		 8980
8981 switch (fan_control_access_mode) {
efa27145 8982 case TPACPI_FAN_WR_ACPI_SFAN:
887965e6 8983 seq_printf(m, " (<level> is 0-7)\n");
56b6aeb0
HMH		 8984 break;
8985
8986 default:
5cac62ac 8987 seq_printf(m, " (<level> is 0-7, auto, disengaged, full-speed)\n");
56b6aeb0
HMH		 8988 break;
8989 }
8990 }
18ad7996 8991
efa27145 8992 if (fan_control_commands & TPACPI_FAN_CMD_ENABLE)
887965e6 8993 seq_printf(m, "commands:\tenable, disable\n"
5cac62ac 8994 "commands:\twatchdog <timeout> (<timeout> is 0 (off), 1-120 (seconds))\n");
1da177e4 8995
efa27145 8996 if (fan_control_commands & TPACPI_FAN_CMD_SPEED)
5cac62ac 8997 seq_printf(m, "commands:\tspeed <speed> (<speed> is 0-65535)\n");
56b6aeb0 8998
887965e6 8999 return 0;
78f81cc4
BD		 9000}
9001
18ad7996
HMH		 9002static int fan_write_cmd_level(const char *cmd, int *rc)
9003{
9004 int level;
9005
a12095c2 9006 if (strlencmp(cmd, "level auto") == 0)
efa27145 9007 level = TP_EC_FAN_AUTO;
fe98a52c 9008 else if ((strlencmp(cmd, "level disengaged") == 0) |
35ff8b9f 9009 (strlencmp(cmd, "level full-speed") == 0))
efa27145 9010 level = TP_EC_FAN_FULLSPEED;
a12095c2 9011 else if (sscanf(cmd, "level %d", &level) != 1)
18ad7996
HMH		 9012 return 0;
9013
35ff8b9f
HMH		 9014 *rc = fan_set_level_safe(level);
9015 if (*rc == -ENXIO)
0978e012
JP		 9016 pr_err("level command accepted for unsupported access mode %d\n",
9017 fan_control_access_mode);
74a60c0f
HMH		 9018 else if (!*rc)
9019 tpacpi_disclose_usertask("procfs fan",
9020 "set level to %d\n", level);
18ad7996
HMH		 9021
9022 return 1;
9023}
9024
9025static int fan_write_cmd_enable(const char *cmd, int *rc)
9026{
9027 if (strlencmp(cmd, "enable") != 0)
9028 return 0;
9029
35ff8b9f
HMH		 9030 *rc = fan_set_enable();
9031 if (*rc == -ENXIO)
0978e012
JP		 9032 pr_err("enable command accepted for unsupported access mode %d\n",
9033 fan_control_access_mode);
74a60c0f
HMH		 9034 else if (!*rc)
9035 tpacpi_disclose_usertask("procfs fan", "enable\n");
18ad7996
HMH		 9036
9037 return 1;
9038}
9039
9040static int fan_write_cmd_disable(const char *cmd, int *rc)
9041{
9042 if (strlencmp(cmd, "disable") != 0)
9043 return 0;
9044
35ff8b9f
HMH		 9045 *rc = fan_set_disable();
9046 if (*rc == -ENXIO)
0978e012
JP		 9047 pr_err("disable command accepted for unsupported access mode %d\n",
9048 fan_control_access_mode);
74a60c0f
HMH		 9049 else if (!*rc)
9050 tpacpi_disclose_usertask("procfs fan", "disable\n");
18ad7996
HMH		 9051
9052 return 1;
9053}
9054
9055static int fan_write_cmd_speed(const char *cmd, int *rc)
9056{
9057 int speed;
9058
a8b7a662
HMH		 9059 /* TODO:
9060 * Support speed <low> <medium> <high> ? */
9061
18ad7996
HMH		 9062 if (sscanf(cmd, "speed %d", &speed) != 1)
9063 return 0;
9064
35ff8b9f
HMH		 9065 *rc = fan_set_speed(speed);
9066 if (*rc == -ENXIO)
0978e012
JP		 9067 pr_err("speed command accepted for unsupported access mode %d\n",
9068 fan_control_access_mode);
74a60c0f
HMH		 9069 else if (!*rc)
9070 tpacpi_disclose_usertask("procfs fan",
9071 "set speed to %d\n", speed);
18ad7996
HMH		 9072
9073 return 1;
9074}
9075
16663a87
HMH		 9076static int fan_write_cmd_watchdog(const char *cmd, int *rc)
9077{
9078 int interval;
9079
9080 if (sscanf(cmd, "watchdog %d", &interval) != 1)
9081 return 0;
9082
9083 if (interval < 0 || interval > 120)
9084 *rc = -EINVAL;
74a60c0f 9085 else {
16663a87 9086 fan_watchdog_maxinterval = interval;
74a60c0f
HMH		 9087 tpacpi_disclose_usertask("procfs fan",
9088 "set watchdog timer to %d\n",
9089 interval);
9090 }
16663a87
HMH		 9091
9092 return 1;
9093}
9094
18ad7996
HMH		 9095static int fan_write(char *buf)
9096{
9097 char *cmd;
9098 int rc = 0;
9099
9100 while (!rc && (cmd = next_cmd(&buf))) {
efa27145 9101 if (!((fan_control_commands & TPACPI_FAN_CMD_LEVEL) &&
18ad7996 9102 fan_write_cmd_level(cmd, &rc)) &&
efa27145 9103 !((fan_control_commands & TPACPI_FAN_CMD_ENABLE) &&
18ad7996 9104 (fan_write_cmd_enable(cmd, &rc) ||
16663a87
HMH		 9105 fan_write_cmd_disable(cmd, &rc) ||
9106 fan_write_cmd_watchdog(cmd, &rc))) &&
efa27145 9107 !((fan_control_commands & TPACPI_FAN_CMD_SPEED) &&
18ad7996
HMH		 9108 fan_write_cmd_speed(cmd, &rc))
9109 )
9110 rc = -EINVAL;
16663a87
HMH		 9111 else if (!rc)
9112 fan_watchdog_reset();
18ad7996
HMH		 9113 }
9114
9115 return rc;
9116}
9117
a5763f22
HMH		 9118static struct ibm_struct fan_driver_data = {
9119 .name = "fan",
9120 .read = fan_read,
9121 .write = fan_write,
9122 .exit = fan_exit,
75700e53
HMH		 9123 .suspend = fan_suspend,
9124 .resume = fan_resume,
a5763f22
HMH		 9125};
9126
420f9739
DH		 9127/*************************************************************************
9128 * Mute LED subdriver
9129 */
9130
9131
9132struct tp_led_table {
9133 acpi_string name;
9134 int on_value;
9135 int off_value;
9136 int state;
9137};
9138
9139static struct tp_led_table led_tables[] = {
9140 [TPACPI_LED_MUTE] = {
9141 .name = "SSMS",
9142 .on_value = 1,
9143 .off_value = 0,
9144 },
9145 [TPACPI_LED_MICMUTE] = {
9146 .name = "MMTS",
9147 .on_value = 2,
9148 .off_value = 0,
9149 },
9150};
9151
9152static int mute_led_on_off(struct tp_led_table *t, bool state)
9153{
9154 acpi_handle temp;
9155 int output;
9156
3526ecad 9157 if (ACPI_FAILURE(acpi_get_handle(hkey_handle, t->name, &temp))) {
420f9739
DH		 9158 pr_warn("Thinkpad ACPI has no %s interface.\n", t->name);
9159 return -EIO;
9160 }
9161
9162 if (!acpi_evalf(hkey_handle, &output, t->name, "dd",
9163 state ? t->on_value : t->off_value))
9164 return -EIO;
9165
9166 t->state = state;
9167 return state;
9168}
9169
9170int tpacpi_led_set(int whichled, bool on)
9171{
9172 struct tp_led_table *t;
9173
9174 if (whichled < 0 || whichled >= TPACPI_LED_MAX)
9175 return -EINVAL;
9176
9177 t = &led_tables[whichled];
9178 if (t->state < 0 || t->state == on)
9179 return t->state;
9180 return mute_led_on_off(t, on);
9181}
9182EXPORT_SYMBOL_GPL(tpacpi_led_set);
9183
9184static int mute_led_init(struct ibm_init_struct *iibm)
9185{
9186 acpi_handle temp;
9187 int i;
9188
9189 for (i = 0; i < TPACPI_LED_MAX; i++) {
9190 struct tp_led_table *t = &led_tables[i];
9191 if (ACPI_SUCCESS(acpi_get_handle(hkey_handle, t->name, &temp)))
9192 mute_led_on_off(t, false);
9193 else
9194 t->state = -ENODEV;
9195 }
9196 return 0;
9197}
9198
9199static void mute_led_exit(void)
9200{
9201 int i;
9202
9203 for (i = 0; i < TPACPI_LED_MAX; i++)
9204 tpacpi_led_set(i, false);
9205}
9206
119f4498
TI		 9207static void mute_led_resume(void)
9208{
9209 int i;
9210
9211 for (i = 0; i < TPACPI_LED_MAX; i++) {
9212 struct tp_led_table *t = &led_tables[i];
9213 if (t->state >= 0)
9214 mute_led_on_off(t, t->state);
9215 }
9216}
9217
420f9739
DH		 9218static struct ibm_struct mute_led_driver_data = {
9219 .name = "mute_led",
9220 .exit = mute_led_exit,
119f4498 9221 .resume = mute_led_resume,
420f9739
DH		 9222};
9223
2801b968
OG		 9224/*
9225 * Battery Wear Control Driver
9226 * Contact: Ognjen Galic <smclt30p@gmail.com>
9227 */
9228
9229/* Metadata */
9230
9231#define GET_START "BCTG"
9232#define SET_START "BCCS"
9233#define GET_STOP "BCSG"
9234#define SET_STOP "BCSS"
9235
9236#define START_ATTR "charge_start_threshold"
9237#define STOP_ATTR "charge_stop_threshold"
9238
9239enum {
9240 BAT_ANY = 0,
9241 BAT_PRIMARY = 1,
9242 BAT_SECONDARY = 2
9243};
9244
9245enum {
9246 /* Error condition bit */
9247 METHOD_ERR = BIT(31),
9248};
9249
9250enum {
9251 /* This is used in the get/set helpers */
9252 THRESHOLD_START,
9253 THRESHOLD_STOP,
9254};
9255
9256struct tpacpi_battery_data {
9257 int charge_start;
9258 int start_support;
9259 int charge_stop;
9260 int stop_support;
9261};
9262
9263struct tpacpi_battery_driver_data {
9264 struct tpacpi_battery_data batteries[3];
9265 int individual_addressing;
9266};
9267
9268static struct tpacpi_battery_driver_data battery_info;
9269
9270/* ACPI helpers/functions/probes */
9271
9272/**
9273 * This evaluates a ACPI method call specific to the battery
9274 * ACPI extension. The specifics are that an error is marked
9275 * in the 32rd bit of the response, so we just check that here.
9276 */
9277static acpi_status tpacpi_battery_acpi_eval(char *method, int *ret, int param)
9278{
9279 int response;
9280
9281 if (!acpi_evalf(hkey_handle, &response, method, "dd", param)) {
9282 acpi_handle_err(hkey_handle, "%s: evaluate failed", method);
9283 return AE_ERROR;
9284 }
9285 if (response & METHOD_ERR) {
9286 acpi_handle_err(hkey_handle,
9287 "%s evaluated but flagged as error", method);
9288 return AE_ERROR;
9289 }
9290 *ret = response;
9291 return AE_OK;
9292}
9293
9294static int tpacpi_battery_get(int what, int battery, int *ret)
9295{
9296 switch (what) {
9297 case THRESHOLD_START:
9298 if ACPI_FAILURE(tpacpi_battery_acpi_eval(GET_START, ret, battery))
9299 return -ENODEV;
9300
9301 /* The value is in the low 8 bits of the response */
9302 *ret = *ret & 0xFF;
9303 return 0;
9304 case THRESHOLD_STOP:
9305 if ACPI_FAILURE(tpacpi_battery_acpi_eval(GET_STOP, ret, battery))
9306 return -ENODEV;
9307 /* Value is in lower 8 bits */
9308 *ret = *ret & 0xFF;
9309 /*
9310 * On the stop value, if we return 0 that
9311 * does not make any sense. 0 means Default, which
9312 * means that charging stops at 100%, so we return
9313 * that.
9314 */
9315 if (*ret == 0)
9316 *ret = 100;
9317 return 0;
9318 default:
9319 pr_crit("wrong parameter: %d", what);
9320 return -EINVAL;
9321 }
9322}
9323
9324static int tpacpi_battery_set(int what, int battery, int value)
9325{
9326 int param, ret;
9327 /* The first 8 bits are the value of the threshold */
9328 param = value;
9329 /* The battery ID is in bits 8-9, 2 bits */
9330 param |= battery << 8;
9331
9332 switch (what) {
9333 case THRESHOLD_START:
9334 if ACPI_FAILURE(tpacpi_battery_acpi_eval(SET_START, &ret, param)) {
9335 pr_err("failed to set charge threshold on battery %d",
9336 battery);
9337 return -ENODEV;
9338 }
9339 return 0;
9340 case THRESHOLD_STOP:
9341 if ACPI_FAILURE(tpacpi_battery_acpi_eval(SET_STOP, &ret, param)) {
9342 pr_err("failed to set stop threshold: %d", battery);
9343 return -ENODEV;
9344 }
9345 return 0;
9346 default:
9347 pr_crit("wrong parameter: %d", what);
9348 return -EINVAL;
9349 }
9350}
9351
9352static int tpacpi_battery_probe(int battery)
9353{
9354 int ret = 0;
9355
9356 memset(&battery_info, 0, sizeof(struct tpacpi_battery_driver_data));
9357 /*
9358 * 1) Get the current start threshold
9359 * 2) Check for support
9360 * 3) Get the current stop threshold
9361 * 4) Check for support
9362 */
9363 if (acpi_has_method(hkey_handle, GET_START)) {
9364 if ACPI_FAILURE(tpacpi_battery_acpi_eval(GET_START, &ret, battery)) {
9365 pr_err("Error probing battery %d\n", battery);
9366 return -ENODEV;
9367 }
9368 /* Individual addressing is in bit 9 */
9369 if (ret & BIT(9))
9370 battery_info.individual_addressing = true;
9371 /* Support is marked in bit 8 */
9372 if (ret & BIT(8))
9373 battery_info.batteries[battery].start_support = 1;
9374 else
9375 return -ENODEV;
9376 if (tpacpi_battery_get(THRESHOLD_START, battery,
9377 &battery_info.batteries[battery].charge_start)) {
9378 pr_err("Error probing battery %d\n", battery);
9379 return -ENODEV;
9380 }
9381 }
9382 if (acpi_has_method(hkey_handle, GET_STOP)) {
9383 if ACPI_FAILURE(tpacpi_battery_acpi_eval(GET_STOP, &ret, battery)) {
9384 pr_err("Error probing battery stop; %d\n", battery);
9385 return -ENODEV;
9386 }
9387 /* Support is marked in bit 8 */
9388 if (ret & BIT(8))
9389 battery_info.batteries[battery].stop_support = 1;
9390 else
9391 return -ENODEV;
9392 if (tpacpi_battery_get(THRESHOLD_STOP, battery,
9393 &battery_info.batteries[battery].charge_stop)) {
9394 pr_err("Error probing battery stop: %d\n", battery);
9395 return -ENODEV;
9396 }
9397 }
9398 pr_info("battery %d registered (start %d, stop %d)",
9399 battery,
9400 battery_info.batteries[battery].charge_start,
9401 battery_info.batteries[battery].charge_stop);
9402
9403 return 0;
9404}
9405
9406/* General helper functions */
9407
9408static int tpacpi_battery_get_id(const char *battery_name)
9409{
9410
9411 if (strcmp(battery_name, "BAT0") == 0)
9412 return BAT_PRIMARY;
9413 if (strcmp(battery_name, "BAT1") == 0)
9414 return BAT_SECONDARY;
9415 /*
9416 * If for some reason the battery is not BAT0 nor is it
9417 * BAT1, we will assume it's the default, first battery,
9418 * AKA primary.
9419 */
9420 pr_warn("unknown battery %s, assuming primary", battery_name);
9421 return BAT_PRIMARY;
9422}
9423
9424/* sysfs interface */
9425
9426static ssize_t tpacpi_battery_store(int what,
9427 struct device *dev,
9428 const char *buf, size_t count)
9429{
9430 struct power_supply *supply = to_power_supply(dev);
9431 unsigned long value;
9432 int battery, rval;
9433 /*
9434 * Some systems have support for more than
9435 * one battery. If that is the case,
9436 * tpacpi_battery_probe marked that addressing
9437 * them individually is supported, so we do that
9438 * based on the device struct.
9439 *
9440 * On systems that are not supported, we assume
9441 * the primary as most of the ACPI calls fail
9442 * with "Any Battery" as the parameter.
9443 */
9444 if (battery_info.individual_addressing)
9445 /* BAT_PRIMARY or BAT_SECONDARY */
9446 battery = tpacpi_battery_get_id(supply->desc->name);
9447 else
9448 battery = BAT_PRIMARY;
9449
9450 rval = kstrtoul(buf, 10, &value);
9451 if (rval)
9452 return rval;
9453
9454 switch (what) {
9455 case THRESHOLD_START:
9456 if (!battery_info.batteries[battery].start_support)
9457 return -ENODEV;
9458 /* valid values are [0, 99] */
9459 if (value < 0 || value > 99)
9460 return -EINVAL;
9461 if (value > battery_info.batteries[battery].charge_stop)
9462 return -EINVAL;
9463 if (tpacpi_battery_set(THRESHOLD_START, battery, value))
9464 return -ENODEV;
9465 battery_info.batteries[battery].charge_start = value;
9466 return count;
9467
9468 case THRESHOLD_STOP:
9469 if (!battery_info.batteries[battery].stop_support)
9470 return -ENODEV;
9471 /* valid values are [1, 100] */
9472 if (value < 1 || value > 100)
9473 return -EINVAL;
9474 if (value < battery_info.batteries[battery].charge_start)
9475 return -EINVAL;
9476 battery_info.batteries[battery].charge_stop = value;
9477 /*
9478 * When 100 is passed to stop, we need to flip
9479 * it to 0 as that the EC understands that as
9480 * "Default", which will charge to 100%
9481 */
9482 if (value == 100)
9483 value = 0;
9484 if (tpacpi_battery_set(THRESHOLD_STOP, battery, value))
9485 return -EINVAL;
9486 return count;
9487 default:
9488 pr_crit("Wrong parameter: %d", what);
9489 return -EINVAL;
9490 }
9491 return count;
9492}
9493
9494static ssize_t tpacpi_battery_show(int what,
9495 struct device *dev,
9496 char *buf)
9497{
9498 struct power_supply *supply = to_power_supply(dev);
9499 int ret, battery;
9500 /*
9501 * Some systems have support for more than
9502 * one battery. If that is the case,
9503 * tpacpi_battery_probe marked that addressing
9504 * them individually is supported, so we;
9505 * based on the device struct.
9506 *
9507 * On systems that are not supported, we assume
9508 * the primary as most of the ACPI calls fail
9509 * with "Any Battery" as the parameter.
9510 */
9511 if (battery_info.individual_addressing)
9512 /* BAT_PRIMARY or BAT_SECONDARY */
9513 battery = tpacpi_battery_get_id(supply->desc->name);
9514 else
9515 battery = BAT_PRIMARY;
9516 if (tpacpi_battery_get(what, battery, &ret))
9517 return -ENODEV;
9518 return sprintf(buf, "%d\n", ret);
9519}
9520
9521static ssize_t charge_start_threshold_show(struct device *device,
9522 struct device_attribute *attr,
9523 char *buf)
9524{
9525 return tpacpi_battery_show(THRESHOLD_START, device, buf);
9526}
9527
9528static ssize_t charge_stop_threshold_show(struct device *device,
9529 struct device_attribute *attr,
9530 char *buf)
9531{
9532 return tpacpi_battery_show(THRESHOLD_STOP, device, buf);
9533}
9534
9535static ssize_t charge_start_threshold_store(struct device *dev,
9536 struct device_attribute *attr,
9537 const char *buf, size_t count)
9538{
9539 return tpacpi_battery_store(THRESHOLD_START, dev, buf, count);
9540}
9541
9542static ssize_t charge_stop_threshold_store(struct device *dev,
9543 struct device_attribute *attr,
9544 const char *buf, size_t count)
9545{
9546 return tpacpi_battery_store(THRESHOLD_STOP, dev, buf, count);
9547}
9548
9549static DEVICE_ATTR_RW(charge_start_threshold);
9550static DEVICE_ATTR_RW(charge_stop_threshold);
9551
9552static struct attribute *tpacpi_battery_attrs[] = {
9553 &dev_attr_charge_start_threshold.attr,
9554 &dev_attr_charge_stop_threshold.attr,
9555 NULL,
9556};
9557
9558ATTRIBUTE_GROUPS(tpacpi_battery);
9559
9560/* ACPI battery hooking */
9561
9562static int tpacpi_battery_add(struct power_supply *battery)
9563{
9564 int batteryid = tpacpi_battery_get_id(battery->desc->name);
9565
9566 if (tpacpi_battery_probe(batteryid))
9567 return -ENODEV;
9568 if (device_add_groups(&battery->dev, tpacpi_battery_groups))
9569 return -ENODEV;
9570 return 0;
9571}
9572
9573static int tpacpi_battery_remove(struct power_supply *battery)
9574{
9575 device_remove_groups(&battery->dev, tpacpi_battery_groups);
9576 return 0;
9577}
9578
9579static struct acpi_battery_hook battery_hook = {
9580 .add_battery = tpacpi_battery_add,
9581 .remove_battery = tpacpi_battery_remove,
9582 .name = "ThinkPad Battery Extension",
9583};
9584
9585/* Subdriver init/exit */
9586
9587static int __init tpacpi_battery_init(struct ibm_init_struct *ibm)
9588{
9589 battery_hook_register(&battery_hook);
9590 return 0;
9591}
9592
9593static void tpacpi_battery_exit(void)
9594{
9595 battery_hook_unregister(&battery_hook);
9596}
9597
9598static struct ibm_struct battery_driver_data = {
9599 .name = "battery",
9600 .exit = tpacpi_battery_exit,
9601};
9602
56b6aeb0
HMH		 9603/****************************************************************************
9604 ****************************************************************************
9605 *
9606 * Infrastructure
9607 *
9608 ****************************************************************************
9609 ****************************************************************************/
9610
8b468c0c
HMH		 9611/*
9612 * HKEY event callout for other subdrivers go here
9613 * (yes, it is ugly, but it is quick, safe, and gets the job done
9614 */
9615static void tpacpi_driver_event(const unsigned int hkey_event)
9616{
347a2686
HMH		 9617 if (ibm_backlight_device) {
9618 switch (hkey_event) {
9619 case TP_HKEY_EV_BRGHT_UP:
9620 case TP_HKEY_EV_BRGHT_DOWN:
9621 tpacpi_brightness_notify_change();
9622 }
9623 }
0d204c34
HMH		 9624 if (alsa_card) {
9625 switch (hkey_event) {
9626 case TP_HKEY_EV_VOL_UP:
9627 case TP_HKEY_EV_VOL_DOWN:
9628 case TP_HKEY_EV_VOL_MUTE:
9629 volume_alsa_notify_change();
9630 }
9631 }
c685e20d
HG		 9632 if (tp_features.kbdlight && hkey_event == TP_HKEY_EV_KBD_LIGHT) {
9633 enum led_brightness brightness;
9634
9635 mutex_lock(&kbdlight_mutex);
9636
9637 /*
9638 * Check the brightness actually changed, setting the brightness
9639 * through kbdlight_set_level() also triggers this event.
9640 */
9641 brightness = kbdlight_sysfs_get(NULL);
9642 if (kbdlight_brightness != brightness) {
9643 kbdlight_brightness = brightness;
9644 led_classdev_notify_brightness_hw_changed(
9645 &tpacpi_led_kbdlight.led_classdev, brightness);
9646 }
9647
9648 mutex_unlock(&kbdlight_mutex);
9649 }
8b468c0c
HMH		 9650}
9651
8b468c0c
HMH		 9652static void hotkey_driver_event(const unsigned int scancode)
9653{
67bcae6e 9654 tpacpi_driver_event(TP_HKEY_EV_HOTKEY_BASE + scancode);
8b468c0c
HMH		 9655}
9656
7fd40029
HMH		 9657/* --------------------------------------------------------------------- */
9658
56b6aeb0 9659/* /proc support */
94954cc6 9660static struct proc_dir_entry *proc_dir;
16663a87 9661
56b6aeb0
HMH		 9662/*
9663 * Module and infrastructure proble, init and exit handling
9664 */
1da177e4 9665
90ab5ee9 9666static bool force_load;
b21a15f6 9667
fe08bc4b 9668#ifdef CONFIG_THINKPAD_ACPI_DEBUG
a5763f22 9669static const char * __init str_supported(int is_supported)
fe08bc4b 9670{
a5763f22 9671 static char text_unsupported[] __initdata = "not supported";
fe08bc4b 9672
72a979f0 9673 return (is_supported) ? &text_unsupported[4] : &text_unsupported[0];
fe08bc4b
HMH		 9674}
9675#endif /* CONFIG_THINKPAD_ACPI_DEBUG */
9676
b21a15f6
HMH		 9677static void ibm_exit(struct ibm_struct *ibm)
9678{
9679 dbg_printk(TPACPI_DBG_EXIT, "removing %s\n", ibm->name);
9680
9681 list_del_init(&ibm->all_drivers);
9682
9683 if (ibm->flags.acpi_notify_installed) {
9684 dbg_printk(TPACPI_DBG_EXIT,
9685 "%s: acpi_remove_notify_handler\n", ibm->name);
9686 BUG_ON(!ibm->acpi);
9687 acpi_remove_notify_handler(*ibm->acpi->handle,
9688 ibm->acpi->type,
9689 dispatch_acpi_notify);
9690 ibm->flags.acpi_notify_installed = 0;
b21a15f6
HMH		 9691 }
9692
9693 if (ibm->flags.proc_created) {
9694 dbg_printk(TPACPI_DBG_EXIT,
9695 "%s: remove_proc_entry\n", ibm->name);
9696 remove_proc_entry(ibm->name, proc_dir);
9697 ibm->flags.proc_created = 0;
9698 }
9699
9700 if (ibm->flags.acpi_driver_registered) {
9701 dbg_printk(TPACPI_DBG_EXIT,
9702 "%s: acpi_bus_unregister_driver\n", ibm->name);
9703 BUG_ON(!ibm->acpi);
9704 acpi_bus_unregister_driver(ibm->acpi->driver);
9705 kfree(ibm->acpi->driver);
9706 ibm->acpi->driver = NULL;
9707 ibm->flags.acpi_driver_registered = 0;
9708 }
9709
9710 if (ibm->flags.init_called && ibm->exit) {
9711 ibm->exit();
9712 ibm->flags.init_called = 0;
9713 }
9714
9715 dbg_printk(TPACPI_DBG_INIT, "finished removing %s\n", ibm->name);
9716}
f74a27d4 9717
a5763f22 9718static int __init ibm_init(struct ibm_init_struct *iibm)
1da177e4
LT		 9719{
9720 int ret;
a5763f22 9721 struct ibm_struct *ibm = iibm->data;
1da177e4
LT		 9722 struct proc_dir_entry *entry;
9723
a5763f22
HMH		 9724 BUG_ON(ibm == NULL);
9725
9726 INIT_LIST_HEAD(&ibm->all_drivers);
9727
92641177 9728 if (ibm->flags.experimental && !experimental)
1da177e4
LT		 9729 return 0;
9730
fe08bc4b
HMH		 9731 dbg_printk(TPACPI_DBG_INIT,
9732 "probing for %s\n", ibm->name);
9733
a5763f22
HMH		 9734 if (iibm->init) {
9735 ret = iibm->init(iibm);
5fba344c
HMH		 9736 if (ret > 0)
9737 return 0; /* probe failed */
9738 if (ret)
1da177e4 9739 return ret;
a5763f22 9740
92641177 9741 ibm->flags.init_called = 1;
1da177e4
LT		 9742 }
9743
8d376cd6
HMH		 9744 if (ibm->acpi) {
9745 if (ibm->acpi->hid) {
9746 ret = register_tpacpi_subdriver(ibm);
9747 if (ret)
9748 goto err_out;
9749 }
5fba344c 9750
8d376cd6
HMH		 9751 if (ibm->acpi->notify) {
9752 ret = setup_acpi_notify(ibm);
9753 if (ret == -ENODEV) {
0978e012
JP		 9754 pr_notice("disabling subdriver %s\n",
9755 ibm->name);
8d376cd6
HMH		 9756 ret = 0;
9757 goto err_out;
9758 }
9759 if (ret < 0)
9760 goto err_out;
5fba344c 9761 }
5fba344c
HMH		 9762 }
9763
fe08bc4b
HMH		 9764 dbg_printk(TPACPI_DBG_INIT,
9765 "%s installed\n", ibm->name);
9766
78f81cc4 9767 if (ibm->read) {
d161a13f 9768 umode_t mode = iibm->base_procfs_mode;
887965e6 9769
b525c06c
HMH		 9770 if (!mode)
9771 mode = S_IRUGO;
887965e6
AD		 9772 if (ibm->write)
9773 mode |= S_IWUSR;
9774 entry = proc_create_data(ibm->name, mode, proc_dir,
9775 &dispatch_proc_fops, ibm);
78f81cc4 9776 if (!entry) {
0978e012 9777 pr_err("unable to create proc entry %s\n", ibm->name);
5fba344c
HMH		 9778 ret = -ENODEV;
9779 goto err_out;
78f81cc4 9780 }
92641177 9781 ibm->flags.proc_created = 1;
78f81cc4 9782 }
1da177e4 9783
a5763f22
HMH		 9784 list_add_tail(&ibm->all_drivers, &tpacpi_all_drivers);
9785
1da177e4 9786 return 0;
5fba344c
HMH		 9787
9788err_out:
fe08bc4b
HMH		 9789 dbg_printk(TPACPI_DBG_INIT,
9790 "%s: at error exit path with result %d\n",
9791 ibm->name, ret);
9792
5fba344c 9793 ibm_exit(ibm);
72a979f0 9794 return (ret < 0) ? ret : 0;
1da177e4
LT		 9795}
9796
56b6aeb0
HMH		 9797/* Probing */
9798
050df107
HMH		 9799static bool __pure __init tpacpi_is_fw_digit(const char c)
9800{
9801 return (c >= '0' && c <= '9') || (c >= 'A' && c <= 'Z');
9802}
9803
72a979f0 9804static bool __pure __init tpacpi_is_valid_fw_id(const char * const s,
050df107
HMH		 9805 const char t)
9806{
1b0eb5bc
AL		 9807 /*
9808 * Most models: xxyTkkWW (#.##c)
9809 * Ancient 570/600 and -SL lacks (#.##c)
9810 */
9811 if (s && strlen(s) >= 8 &&
050df107
HMH		 9812 tpacpi_is_fw_digit(s[0]) &&
9813 tpacpi_is_fw_digit(s[1]) &&
16a3d9f5
MI		 9814 s[2] == t &&
9815 (s[3] == 'T' || s[3] == 'N') &&
050df107 9816 tpacpi_is_fw_digit(s[4]) &&
1b0eb5bc
AL		 9817 tpacpi_is_fw_digit(s[5]))
9818 return true;
9819
9820 /* New models: xxxyTkkW (#.##c); T550 and some others */
9821 return s && strlen(s) >= 8 &&
9822 tpacpi_is_fw_digit(s[0]) &&
9823 tpacpi_is_fw_digit(s[1]) &&
9824 tpacpi_is_fw_digit(s[2]) &&
9825 s[3] == t &&
9826 (s[4] == 'T' || s[4] == 'N') &&
9827 tpacpi_is_fw_digit(s[5]) &&
9828 tpacpi_is_fw_digit(s[6]);
050df107
HMH		 9829}
9830
bf20e740
HMH		 9831/* returns 0 - probe ok, or < 0 - probe error.
9832 * Probe ok doesn't mean thinkpad found.
9833 * On error, kfree() cleanup on tp->* is not performed, caller must do it */
9834static int __must_check __init get_thinkpad_model_data(
9835 struct thinkpad_id_data *tp)
1da177e4 9836{
1855256c 9837 const struct dmi_device *dev = NULL;
56b6aeb0 9838 char ec_fw_string[18];
bf20e740 9839 char const *s;
1da177e4 9840
d5a2f2f1 9841 if (!tp)
bf20e740 9842 return -EINVAL;
d5a2f2f1
HMH		 9843
9844 memset(tp, 0, sizeof(*tp));
9845
9846 if (dmi_name_in_vendors("IBM"))
9847 tp->vendor = PCI_VENDOR_ID_IBM;
9848 else if (dmi_name_in_vendors("LENOVO"))
9849 tp->vendor = PCI_VENDOR_ID_LENOVO;
9850 else
bf20e740 9851 return 0;
d5a2f2f1 9852
bf20e740
HMH		 9853 s = dmi_get_system_info(DMI_BIOS_VERSION);
9854 tp->bios_version_str = kstrdup(s, GFP_KERNEL);
9855 if (s && !tp->bios_version_str)
9856 return -ENOMEM;
050df107
HMH		 9857
9858 /* Really ancient ThinkPad 240X will fail this, which is fine */
16a3d9f5
MI		 9859 if (!(tpacpi_is_valid_fw_id(tp->bios_version_str, 'E') ||
9860 tpacpi_is_valid_fw_id(tp->bios_version_str, 'C')))
bf20e740 9861 return 0;
050df107 9862
d5a2f2f1
HMH		 9863 tp->bios_model = tp->bios_version_str[0]
9864 | (tp->bios_version_str[1] << 8);
050df107
HMH		 9865 tp->bios_release = (tp->bios_version_str[4] << 8)
9866 | tp->bios_version_str[5];
d5a2f2f1 9867
56b6aeb0
HMH		 9868 /*
9869 * ThinkPad T23 or newer, A31 or newer, R50e or newer,
9870 * X32 or newer, all Z series; Some models must have an
9871 * up-to-date BIOS or they will not be detected.
9872 *
9873 * See http://thinkwiki.org/wiki/List_of_DMI_IDs
9874 */
9875 while ((dev = dmi_find_device(DMI_DEV_TYPE_OEM_STRING, NULL, dev))) {
9876 if (sscanf(dev->name,
9877 "IBM ThinkPad Embedded Controller -[%17c",
9878 ec_fw_string) == 1) {
9879 ec_fw_string[sizeof(ec_fw_string) - 1] = 0;
9880 ec_fw_string[strcspn(ec_fw_string, " ]")] = 0;
d5a2f2f1
HMH		 9881
9882 tp->ec_version_str = kstrdup(ec_fw_string, GFP_KERNEL);
bf20e740
HMH		 9883 if (!tp->ec_version_str)
9884 return -ENOMEM;
050df107
HMH		 9885
9886 if (tpacpi_is_valid_fw_id(ec_fw_string, 'H')) {
9887 tp->ec_model = ec_fw_string[0]
9888 | (ec_fw_string[1] << 8);
9889 tp->ec_release = (ec_fw_string[4] << 8)
9890 | ec_fw_string[5];
9891 } else {
5cac62ac 9892 pr_notice("ThinkPad firmware release %s doesn't match the known patterns\n",
0978e012
JP		 9893 ec_fw_string);
9894 pr_notice("please report this to %s\n",
9895 TPACPI_MAIL);
050df107 9896 }
d5a2f2f1 9897 break;
78f81cc4 9898 }
1da177e4 9899 }
d5a2f2f1 9900
bf20e740 9901 s = dmi_get_system_info(DMI_PRODUCT_VERSION);
40f5c777 9902 if (s && !(strncasecmp(s, "ThinkPad", 8) && strncasecmp(s, "Lenovo", 6))) {
bf20e740
HMH		 9903 tp->model_str = kstrdup(s, GFP_KERNEL);
9904 if (!tp->model_str)
9905 return -ENOMEM;
a4f46bb9
MI		 9906 } else {
9907 s = dmi_get_system_info(DMI_BIOS_VENDOR);
40f5c777 9908 if (s && !(strncasecmp(s, "Lenovo", 6))) {
a4f46bb9
MI		 9909 tp->model_str = kstrdup(s, GFP_KERNEL);
9910 if (!tp->model_str)
9911 return -ENOMEM;
9912 }
d5a2f2f1 9913 }
8c74adbc 9914
bf20e740
HMH		 9915 s = dmi_get_system_info(DMI_PRODUCT_NAME);
9916 tp->nummodel_str = kstrdup(s, GFP_KERNEL);
9917 if (s && !tp->nummodel_str)
9918 return -ENOMEM;
9919
9920 return 0;
1da177e4
LT		 9921}
9922
5fba344c
HMH		 9923static int __init probe_for_thinkpad(void)
9924{
9925 int is_thinkpad;
9926
9927 if (acpi_disabled)
9928 return -ENODEV;
9929
e28393c0
HMH		 9930 /* It would be dangerous to run the driver in this case */
9931 if (!tpacpi_is_ibm() && !tpacpi_is_lenovo())
9932 return -ENODEV;
9933
5fba344c
HMH		 9934 /*
9935 * Non-ancient models have better DMI tagging, but very old models
e675abaf 9936 * don't. tpacpi_is_fw_known() is a cheat to help in that case.
5fba344c 9937 */
e675abaf
HMH		 9938 is_thinkpad = (thinkpad_id.model_str != NULL) ||
9939 (thinkpad_id.ec_model != 0) ||
9940 tpacpi_is_fw_known();
5fba344c 9941
437e470c
HMH		 9942 /* The EC handler is required */
9943 tpacpi_acpi_handle_locate("ec", TPACPI_ACPI_EC_HID, &ec_handle);
5fba344c
HMH		 9944 if (!ec_handle) {
9945 if (is_thinkpad)
0978e012 9946 pr_err("Not yet supported ThinkPad detected!\n");
5fba344c
HMH		 9947 return -ENODEV;
9948 }
9949
0dcef77c
HMH		 9950 if (!is_thinkpad && !force_load)
9951 return -ENODEV;
9952
5fba344c
HMH		 9953 return 0;
9954}
9955
7a43f788
HMH		 9956static void __init thinkpad_acpi_init_banner(void)
9957{
0978e012
JP		 9958 pr_info("%s v%s\n", TPACPI_DESC, TPACPI_VERSION);
9959 pr_info("%s\n", TPACPI_URL);
7a43f788 9960
0978e012 9961 pr_info("ThinkPad BIOS %s, EC %s\n",
7a43f788
HMH		 9962 (thinkpad_id.bios_version_str) ?
9963 thinkpad_id.bios_version_str : "unknown",
9964 (thinkpad_id.ec_version_str) ?
9965 thinkpad_id.ec_version_str : "unknown");
9966
9967 BUG_ON(!thinkpad_id.vendor);
9968
9969 if (thinkpad_id.model_str)
0978e012 9970 pr_info("%s %s, model %s\n",
7a43f788
HMH		 9971 (thinkpad_id.vendor == PCI_VENDOR_ID_IBM) ?
9972 "IBM" : ((thinkpad_id.vendor ==
9973 PCI_VENDOR_ID_LENOVO) ?
9974 "Lenovo" : "Unknown vendor"),
9975 thinkpad_id.model_str,
9976 (thinkpad_id.nummodel_str) ?
9977 thinkpad_id.nummodel_str : "unknown");
9978}
5fba344c 9979
56b6aeb0 9980/* Module init, exit, parameters */
1da177e4 9981
a5763f22
HMH		 9982static struct ibm_init_struct ibms_init[] __initdata = {
9983 {
a5763f22
HMH		 9984 .data = &thinkpad_acpi_driver_data,
9985 },
9986 {
9987 .init = hotkey_init,
9988 .data = &hotkey_driver_data,
9989 },
9990 {
9991 .init = bluetooth_init,
9992 .data = &bluetooth_driver_data,
9993 },
9994 {
9995 .init = wan_init,
9996 .data = &wan_driver_data,
9997 },
0045c0aa
HMH		 9998 {
9999 .init = uwb_init,
10000 .data = &uwb_driver_data,
10001 },
d7c1d17d 10002#ifdef CONFIG_THINKPAD_ACPI_VIDEO
a5763f22
HMH		 10003 {
10004 .init = video_init,
b525c06c 10005 .base_procfs_mode = S_IRUSR,
a5763f22
HMH		 10006 .data = &video_driver_data,
10007 },
d7c1d17d 10008#endif
bb28f3d5
PR		 10009 {
10010 .init = kbdlight_init,
10011 .data = &kbdlight_driver_data,
10012 },
a5763f22
HMH		 10013 {
10014 .init = light_init,
10015 .data = &light_driver_data,
10016 },
a5763f22
HMH		 10017 {
10018 .init = cmos_init,
10019 .data = &cmos_driver_data,
10020 },
10021 {
10022 .init = led_init,
10023 .data = &led_driver_data,
10024 },
10025 {
10026 .init = beep_init,
10027 .data = &beep_driver_data,
10028 },
10029 {
10030 .init = thermal_init,
10031 .data = &thermal_driver_data,
10032 },
a5763f22
HMH		 10033 {
10034 .init = brightness_init,
10035 .data = &brightness_driver_data,
10036 },
10037 {
329e4e18 10038 .init = volume_init,
a5763f22
HMH		 10039 .data = &volume_driver_data,
10040 },
10041 {
10042 .init = fan_init,
10043 .data = &fan_driver_data,
10044 },
420f9739
DH		 10045 {
10046 .init = mute_led_init,
10047 .data = &mute_led_driver_data,
10048 },
2801b968
OG		 10049 {
10050 .init = tpacpi_battery_init,
10051 .data = &battery_driver_data,
10052 },
a5763f22
HMH		 10053};
10054
e4dca7b7 10055static int __init set_ibm_param(const char *val, const struct kernel_param *kp)
1da177e4
LT		 10056{
10057 unsigned int i;
a5763f22 10058 struct ibm_struct *ibm;
1da177e4 10059
59f91ff1
HMH		 10060 if (!kp || !kp->name || !val)
10061 return -EINVAL;
10062
a5763f22
HMH		 10063 for (i = 0; i < ARRAY_SIZE(ibms_init); i++) {
10064 ibm = ibms_init[i].data;
59f91ff1
HMH		 10065 WARN_ON(ibm == NULL);
10066
10067 if (!ibm || !ibm->name)
10068 continue;
a5763f22
HMH		 10069
10070 if (strcmp(ibm->name, kp->name) == 0 && ibm->write) {
10071 if (strlen(val) > sizeof(ibms_init[i].param) - 2)
78f81cc4 10072 return -ENOSPC;
a5763f22
HMH		 10073 strcpy(ibms_init[i].param, val);
10074 strcat(ibms_init[i].param, ",");
78f81cc4
BD		 10075 return 0;
10076 }
a5763f22 10077 }
1da177e4 10078
1da177e4
LT		 10079 return -EINVAL;
10080}
10081
b09c7225 10082module_param(experimental, int, 0444);
f68080f8 10083MODULE_PARM_DESC(experimental,
35ff8b9f 10084 "Enables experimental features when non-zero");
56b6aeb0 10085
132ce091 10086module_param_named(debug, dbg_level, uint, 0);
f68080f8 10087MODULE_PARM_DESC(debug, "Sets debug level bit-mask");
132ce091 10088
b09c7225 10089module_param(force_load, bool, 0444);
f68080f8 10090MODULE_PARM_DESC(force_load,
5cac62ac 10091 "Attempts to load the driver even on a mis-identified ThinkPad when true");
0dcef77c 10092
b09c7225 10093module_param_named(fan_control, fan_control_allowed, bool, 0444);
f68080f8 10094MODULE_PARM_DESC(fan_control,
35ff8b9f 10095 "Enables setting fan parameters features when true");
ecf2a80a 10096
b09c7225 10097module_param_named(brightness_mode, brightness_mode, uint, 0444);
f68080f8 10098MODULE_PARM_DESC(brightness_mode,
5cac62ac 10099 "Selects brightness control strategy: 0=auto, 1=EC, 2=UCMS, 3=EC+NVRAM");
24d3b774 10100
b09c7225 10101module_param(brightness_enable, uint, 0444);
f68080f8 10102MODULE_PARM_DESC(brightness_enable,
35ff8b9f 10103 "Enables backlight control when 1, disables when 0");
87cc537a 10104
ff850c33 10105#ifdef CONFIG_THINKPAD_ACPI_ALSA_SUPPORT
329e4e18
HMH		 10106module_param_named(volume_mode, volume_mode, uint, 0444);
10107MODULE_PARM_DESC(volume_mode,
5cac62ac 10108 "Selects volume control strategy: 0=auto, 1=EC, 2=N/A, 3=EC+NVRAM");
329e4e18 10109
a112ceee
HMH		 10110module_param_named(volume_capabilities, volume_capabilities, uint, 0444);
10111MODULE_PARM_DESC(volume_capabilities,
5cac62ac 10112 "Selects the mixer capabilites: 0=auto, 1=volume and mute, 2=mute only");
a112ceee 10113
c7ac6291
HMH		 10114module_param_named(volume_control, volume_control_allowed, bool, 0444);
10115MODULE_PARM_DESC(volume_control,
5cac62ac 10116 "Enables software override for the console audio control when true");
c7ac6291 10117
9a417ec0
AL		 10118module_param_named(software_mute, software_mute_requested, bool, 0444);
10119MODULE_PARM_DESC(software_mute,
10120 "Request full software mute control");
10121
0d204c34
HMH		 10122/* ALSA module API parameters */
10123module_param_named(index, alsa_index, int, 0444);
10124MODULE_PARM_DESC(index, "ALSA index for the ACPI EC Mixer");
10125module_param_named(id, alsa_id, charp, 0444);
10126MODULE_PARM_DESC(id, "ALSA id for the ACPI EC Mixer");
10127module_param_named(enable, alsa_enable, bool, 0444);
10128MODULE_PARM_DESC(enable, "Enable the ALSA interface for the ACPI EC Mixer");
ff850c33 10129#endif /* CONFIG_THINKPAD_ACPI_ALSA_SUPPORT */
0d204c34 10130
9b4bbbd2 10131/* The module parameter can't be read back, that's why 0 is used here */
e0c7dfe7 10132#define TPACPI_PARAM(feature) \
f68080f8 10133 module_param_call(feature, set_ibm_param, NULL, NULL, 0); \
5cac62ac 10134 MODULE_PARM_DESC(feature, "Simulates thinkpad-acpi procfs command at module load, see documentation")
1da177e4 10135
e0c7dfe7
HMH		 10136TPACPI_PARAM(hotkey);
10137TPACPI_PARAM(bluetooth);
10138TPACPI_PARAM(video);
10139TPACPI_PARAM(light);
e0c7dfe7
HMH		 10140TPACPI_PARAM(cmos);
10141TPACPI_PARAM(led);
10142TPACPI_PARAM(beep);
e0c7dfe7
HMH		 10143TPACPI_PARAM(brightness);
10144TPACPI_PARAM(volume);
10145TPACPI_PARAM(fan);
78f81cc4 10146
a73f3091 10147#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
b09c7225 10148module_param(dbg_wlswemul, uint, 0444);
a73f3091
HMH		 10149MODULE_PARM_DESC(dbg_wlswemul, "Enables WLSW emulation");
10150module_param_named(wlsw_state, tpacpi_wlsw_emulstate, bool, 0);
10151MODULE_PARM_DESC(wlsw_state,
10152 "Initial state of the emulated WLSW switch");
10153
b09c7225 10154module_param(dbg_bluetoothemul, uint, 0444);
a73f3091
HMH		 10155MODULE_PARM_DESC(dbg_bluetoothemul, "Enables bluetooth switch emulation");
10156module_param_named(bluetooth_state, tpacpi_bluetooth_emulstate, bool, 0);
10157MODULE_PARM_DESC(bluetooth_state,
10158 "Initial state of the emulated bluetooth switch");
10159
b09c7225 10160module_param(dbg_wwanemul, uint, 0444);
a73f3091
HMH		 10161MODULE_PARM_DESC(dbg_wwanemul, "Enables WWAN switch emulation");
10162module_param_named(wwan_state, tpacpi_wwan_emulstate, bool, 0);
10163MODULE_PARM_DESC(wwan_state,
10164 "Initial state of the emulated WWAN switch");
0045c0aa 10165
b09c7225 10166module_param(dbg_uwbemul, uint, 0444);
0045c0aa
HMH		 10167MODULE_PARM_DESC(dbg_uwbemul, "Enables UWB switch emulation");
10168module_param_named(uwb_state, tpacpi_uwb_emulstate, bool, 0);
10169MODULE_PARM_DESC(uwb_state,
10170 "Initial state of the emulated UWB switch");
a73f3091
HMH		 10171#endif
10172
b21a15f6
HMH		 10173static void thinkpad_acpi_module_exit(void)
10174{
10175 struct ibm_struct *ibm, *itmp;
10176
10177 tpacpi_lifecycle = TPACPI_LIFE_EXITING;
10178
10179 list_for_each_entry_safe_reverse(ibm, itmp,
10180 &tpacpi_all_drivers,
10181 all_drivers) {
10182 ibm_exit(ibm);
10183 }
10184
10185 dbg_printk(TPACPI_DBG_INIT, "finished subdriver exit path...\n");
10186
10187 if (tpacpi_inputdev) {
10188 if (tp_features.input_device_registered)
10189 input_unregister_device(tpacpi_inputdev);
10190 else
10191 input_free_device(tpacpi_inputdev);
00d39597 10192 kfree(hotkey_keycode_map);
b21a15f6
HMH		 10193 }
10194
10195 if (tpacpi_hwmon)
10196 hwmon_device_unregister(tpacpi_hwmon);
10197
b21a15f6
HMH		 10198 if (tpacpi_sensors_pdev)
10199 platform_device_unregister(tpacpi_sensors_pdev);
10200 if (tpacpi_pdev)
10201 platform_device_unregister(tpacpi_pdev);
10202
10203 if (tp_features.sensors_pdrv_attrs_registered)
10204 tpacpi_remove_driver_attributes(&tpacpi_hwmon_pdriver.driver);
10205 if (tp_features.platform_drv_attrs_registered)
10206 tpacpi_remove_driver_attributes(&tpacpi_pdriver.driver);
10207
10208 if (tp_features.sensors_pdrv_registered)
10209 platform_driver_unregister(&tpacpi_hwmon_pdriver);
10210
10211 if (tp_features.platform_drv_registered)
10212 platform_driver_unregister(&tpacpi_pdriver);
10213
10214 if (proc_dir)
e0c7dfe7 10215 remove_proc_entry(TPACPI_PROC_DIR, acpi_root_dir);
b21a15f6 10216
e0e3c061
HMH		 10217 if (tpacpi_wq)
10218 destroy_workqueue(tpacpi_wq);
10219
b21a15f6
HMH		 10220 kfree(thinkpad_id.bios_version_str);
10221 kfree(thinkpad_id.ec_version_str);
10222 kfree(thinkpad_id.model_str);
d2be15bd 10223 kfree(thinkpad_id.nummodel_str);
b21a15f6
HMH		 10224}
10225
f74a27d4 10226
1def7115 10227static int __init thinkpad_acpi_module_init(void)
1da177e4
LT		 10228{
10229 int ret, i;
10230
8fef502e
HMH		 10231 tpacpi_lifecycle = TPACPI_LIFE_INIT;
10232
54ae1501 10233 /* Driver-level probe */
d5a2f2f1 10234
bf20e740
HMH		 10235 ret = get_thinkpad_model_data(&thinkpad_id);
10236 if (ret) {
0978e012 10237 pr_err("unable to get DMI data: %d\n", ret);
bf20e740
HMH		 10238 thinkpad_acpi_module_exit();
10239 return ret;
10240 }
5fba344c 10241 ret = probe_for_thinkpad();
d5a2f2f1
HMH		 10242 if (ret) {
10243 thinkpad_acpi_module_exit();
5fba344c 10244 return ret;
d5a2f2f1 10245 }
1da177e4 10246
54ae1501 10247 /* Driver initialization */
d5a2f2f1 10248
7a43f788
HMH		 10249 thinkpad_acpi_init_banner();
10250 tpacpi_check_outdated_fw();
10251
e0c7dfe7
HMH		 10252 TPACPI_ACPIHANDLE_INIT(ecrd);
10253 TPACPI_ACPIHANDLE_INIT(ecwr);
1da177e4 10254
e0e3c061
HMH		 10255 tpacpi_wq = create_singlethread_workqueue(TPACPI_WORKQUEUE_NAME);
10256 if (!tpacpi_wq) {
10257 thinkpad_acpi_module_exit();
10258 return -ENOMEM;
10259 }
10260
e0c7dfe7 10261 proc_dir = proc_mkdir(TPACPI_PROC_DIR, acpi_root_dir);
1da177e4 10262 if (!proc_dir) {
0978e012 10263 pr_err("unable to create proc dir " TPACPI_PROC_DIR "\n");
1def7115 10264 thinkpad_acpi_module_exit();
1da177e4
LT		 10265 return -ENODEV;
10266 }
78f81cc4 10267
54ae1501
HMH		 10268 ret = platform_driver_register(&tpacpi_pdriver);
10269 if (ret) {
0978e012 10270 pr_err("unable to register main platform driver\n");
54ae1501
HMH		 10271 thinkpad_acpi_module_exit();
10272 return ret;
10273 }
ac36393d
HMH		 10274 tp_features.platform_drv_registered = 1;
10275
7fd40029
HMH		 10276 ret = platform_driver_register(&tpacpi_hwmon_pdriver);
10277 if (ret) {
0978e012 10278 pr_err("unable to register hwmon platform driver\n");
7fd40029
HMH		 10279 thinkpad_acpi_module_exit();
10280 return ret;
10281 }
10282 tp_features.sensors_pdrv_registered = 1;
10283
176750d6 10284 ret = tpacpi_create_driver_attributes(&tpacpi_pdriver.driver);
2369cc94
HMH		 10285 if (!ret) {
10286 tp_features.platform_drv_attrs_registered = 1;
35ff8b9f
HMH		 10287 ret = tpacpi_create_driver_attributes(
10288 &tpacpi_hwmon_pdriver.driver);
2369cc94 10289 }
176750d6 10290 if (ret) {
0978e012 10291 pr_err("unable to create sysfs driver attributes\n");
176750d6
HMH		 10292 thinkpad_acpi_module_exit();
10293 return ret;
10294 }
2369cc94 10295 tp_features.sensors_pdrv_attrs_registered = 1;
176750d6 10296
54ae1501
HMH		 10297
10298 /* Device initialization */
e0c7dfe7 10299 tpacpi_pdev = platform_device_register_simple(TPACPI_DRVR_NAME, -1,
54ae1501
HMH		 10300 NULL, 0);
10301 if (IS_ERR(tpacpi_pdev)) {
10302 ret = PTR_ERR(tpacpi_pdev);
10303 tpacpi_pdev = NULL;
0978e012 10304 pr_err("unable to register platform device\n");
54ae1501
HMH		 10305 thinkpad_acpi_module_exit();
10306 return ret;
10307 }
7fd40029 10308 tpacpi_sensors_pdev = platform_device_register_simple(
35ff8b9f
HMH		 10309 TPACPI_HWMON_DRVR_NAME,
10310 -1, NULL, 0);
7fd40029
HMH		 10311 if (IS_ERR(tpacpi_sensors_pdev)) {
10312 ret = PTR_ERR(tpacpi_sensors_pdev);
10313 tpacpi_sensors_pdev = NULL;
0978e012 10314 pr_err("unable to register hwmon platform device\n");
7fd40029
HMH		 10315 thinkpad_acpi_module_exit();
10316 return ret;
10317 }
7fd40029 10318 tp_features.sensors_pdev_attrs_registered = 1;
6b99e356
SF		 10319 tpacpi_hwmon = hwmon_device_register_with_groups(
10320 &tpacpi_sensors_pdev->dev, TPACPI_NAME, NULL, NULL);
10321
54ae1501
HMH		 10322 if (IS_ERR(tpacpi_hwmon)) {
10323 ret = PTR_ERR(tpacpi_hwmon);
10324 tpacpi_hwmon = NULL;
0978e012 10325 pr_err("unable to register hwmon device\n");
54ae1501
HMH		 10326 thinkpad_acpi_module_exit();
10327 return ret;
10328 }
8523ed6f 10329 mutex_init(&tpacpi_inputdev_send_mutex);
7f5d1cd6
HMH		 10330 tpacpi_inputdev = input_allocate_device();
10331 if (!tpacpi_inputdev) {
7f5d1cd6
HMH		 10332 thinkpad_acpi_module_exit();
10333 return -ENOMEM;
10334 } else {
10335 /* Prepare input device, but don't register */
10336 tpacpi_inputdev->name = "ThinkPad Extra Buttons";
e0c7dfe7 10337 tpacpi_inputdev->phys = TPACPI_DRVR_NAME "/input0";
7f5d1cd6 10338 tpacpi_inputdev->id.bustype = BUS_HOST;
e28393c0 10339 tpacpi_inputdev->id.vendor = thinkpad_id.vendor;
7f5d1cd6
HMH		 10340 tpacpi_inputdev->id.product = TPACPI_HKEY_INPUT_PRODUCT;
10341 tpacpi_inputdev->id.version = TPACPI_HKEY_INPUT_VERSION;
d112ef95 10342 tpacpi_inputdev->dev.parent = &tpacpi_pdev->dev;
7f5d1cd6 10343 }
77775838
HMH		 10344
10345 /* Init subdriver dependencies */
10346 tpacpi_detect_brightness_capabilities();
10347
10348 /* Init subdrivers */
a5763f22
HMH		 10349 for (i = 0; i < ARRAY_SIZE(ibms_init); i++) {
10350 ret = ibm_init(&ibms_init[i]);
10351 if (ret >= 0 && *ibms_init[i].param)
10352 ret = ibms_init[i].data->write(ibms_init[i].param);
1da177e4 10353 if (ret < 0) {
1def7115 10354 thinkpad_acpi_module_exit();
1da177e4
LT		 10355 return ret;
10356 }
10357 }
b589ea4c
HMH		 10358
10359 tpacpi_lifecycle = TPACPI_LIFE_RUNNING;
10360
7f5d1cd6
HMH		 10361 ret = input_register_device(tpacpi_inputdev);
10362 if (ret < 0) {
0978e012 10363 pr_err("unable to register input device\n");
7f5d1cd6
HMH		 10364 thinkpad_acpi_module_exit();
10365 return ret;
10366 } else {
10367 tp_features.input_device_registered = 1;
10368 }
1da177e4
LT		 10369
10370 return 0;
10371}
10372
95e57ab2
HMH		 10373MODULE_ALIAS(TPACPI_DRVR_SHORTNAME);
10374
922fe097
HMH		 10375/*
10376 * This will autoload the driver in almost every ThinkPad
10377 * in widespread use.
10378 *
10379 * Only _VERY_ old models, like the 240, 240x and 570 lack
10380 * the HKEY event interface.
10381 */
10382MODULE_DEVICE_TABLE(acpi, ibm_htk_device_ids);
10383
f68080f8
HMH		 10384/*
10385 * DMI matching for module autoloading
10386 *
10387 * See http://thinkwiki.org/wiki/List_of_DMI_IDs
10388 * See http://thinkwiki.org/wiki/BIOS_Upgrade_Downloads
10389 *
10390 * Only models listed in thinkwiki will be supported, so add yours
10391 * if it is not there yet.
10392 */
10393#define IBM_BIOS_MODULE_ALIAS(__type) \
b36a50f9 10394 MODULE_ALIAS("dmi:bvnIBM:bvr" __type "ET??WW*")
f68080f8 10395
f68080f8
HMH		 10396/* Ancient thinkpad BIOSes have to be identified by
10397 * BIOS type or model number, and there are far less
10398 * BIOS types than model numbers... */
922fe097 10399IBM_BIOS_MODULE_ALIAS("I[MU]"); /* 570, 570e */
f68080f8 10400
f68f53a2
HMH		 10401MODULE_AUTHOR("Borislav Deianov <borislav@users.sf.net>");
10402MODULE_AUTHOR("Henrique de Moraes Holschuh <hmh@hmh.eng.br>");
e0c7dfe7
HMH		 10403MODULE_DESCRIPTION(TPACPI_DESC);
10404MODULE_VERSION(TPACPI_VERSION);
f68080f8
HMH		 10405MODULE_LICENSE("GPL");
10406
1def7115
HMH		 10407module_init(thinkpad_acpi_module_init);
10408module_exit(thinkpad_acpi_module_exit);
Linux 6.x block layer and io_uring tree(s)