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drm/i915: Rename intel_context[engine].ringbuf
[deliverable/linux.git] / drivers / platform / x86 / thinkpad_acpi.c
CommitLineData
1da177e4 1/*
643f12db 2 * thinkpad_acpi.c - ThinkPad ACPI Extras
1da177e4
LT		 3 *
4 *
78f81cc4 5 * Copyright (C) 2004-2005 Borislav Deianov <borislav@users.sf.net>
1c762ca4 6 * Copyright (C) 2006-2009 Henrique de Moraes Holschuh <hmh@hmh.eng.br>
1da177e4
LT		 7 *
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
12 *
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
17 *
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
a62bc916
HMH		 20 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
21 * 02110-1301, USA.
78f81cc4
BD		 22 */
23
0978e012
JP		 24#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
25
420f9739 26#define TPACPI_VERSION "0.25"
a112ceee 27#define TPACPI_SYSFS_VERSION 0x020700
78f81cc4
BD		 28
29/*
1da177e4 30 * Changelog:
4b45cc07
HMH		 31 * 2007-10-20 changelog trimmed down
32 *
643f12db
HMH		 33 * 2007-03-27 0.14 renamed to thinkpad_acpi and moved to
34 * drivers/misc.
f9ff43a6
HMH		 35 *
36 * 2006-11-22 0.13 new maintainer
37 * changelog now lives in git commit history, and will
38 * not be updated further in-file.
837ca6dd 39 *
78f81cc4
BD		 40 * 2005-03-17 0.11 support for 600e, 770x
41 * thanks to Jamie Lentin <lentinj@dial.pipex.com>
4b45cc07
HMH		 42 *
43 * 2005-01-16 0.9 use MODULE_VERSION
78f81cc4
BD		 44 * thanks to Henrik Brix Andersen <brix@gentoo.org>
45 * fix parameter passing on module loading
46 * thanks to Rusty Russell <rusty@rustcorp.com.au>
47 * thanks to Jim Radford <radford@blackbean.org>
48 * 2004-11-08 0.8 fix init error case, don't return from a macro
49 * thanks to Chris Wright <chrisw@osdl.org>
1da177e4
LT		 50 */
51
0c78039f
HMH		 52#include <linux/kernel.h>
53#include <linux/module.h>
54#include <linux/init.h>
55#include <linux/types.h>
56#include <linux/string.h>
57#include <linux/list.h>
58#include <linux/mutex.h>
73a94d86 59#include <linux/sched.h>
0c78039f
HMH		 60#include <linux/kthread.h>
61#include <linux/freezer.h>
62#include <linux/delay.h>
5a0e3ad6 63#include <linux/slab.h>
0c78039f
HMH		 64#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>
69#include <linux/fb.h>
70#include <linux/platform_device.h>
71#include <linux/hwmon.h>
72#include <linux/hwmon-sysfs.h>
73#include <linux/input.h>
4fa6811b 74#include <linux/leds.h>
0e74dc26 75#include <linux/rfkill.h>
0c78039f
HMH		 76#include <linux/dmi.h>
77#include <linux/jiffies.h>
78#include <linux/workqueue.h>
8b48463f
LZ		 79#include <linux/acpi.h>
80#include <linux/pci_ids.h>
81#include <linux/thinkpad_acpi.h>
0d204c34
HMH		 82#include <sound/core.h>
83#include <sound/control.h>
84#include <sound/initval.h>
8b48463f 85#include <asm/uaccess.h>
b33c6ce5 86#include <acpi/video.h>
0c78039f
HMH		 87
88/* ThinkPad CMOS commands */
89#define TP_CMOS_VOLUME_DOWN 0
90#define TP_CMOS_VOLUME_UP 1
91#define TP_CMOS_VOLUME_MUTE 2
92#define TP_CMOS_BRIGHTNESS_UP 4
93#define TP_CMOS_BRIGHTNESS_DOWN 5
4fa6811b
HMH		 94#define TP_CMOS_THINKLIGHT_ON 12
95#define TP_CMOS_THINKLIGHT_OFF 13
0c78039f
HMH		 96
97/* NVRAM Addresses */
98enum tp_nvram_addr {
99 TP_NVRAM_ADDR_HK2 = 0x57,
100 TP_NVRAM_ADDR_THINKLIGHT = 0x58,
101 TP_NVRAM_ADDR_VIDEO = 0x59,
102 TP_NVRAM_ADDR_BRIGHTNESS = 0x5e,
103 TP_NVRAM_ADDR_MIXER = 0x60,
104};
105
106/* NVRAM bit masks */
107enum {
108 TP_NVRAM_MASK_HKT_THINKPAD = 0x08,
109 TP_NVRAM_MASK_HKT_ZOOM = 0x20,
110 TP_NVRAM_MASK_HKT_DISPLAY = 0x40,
111 TP_NVRAM_MASK_HKT_HIBERNATE = 0x80,
112 TP_NVRAM_MASK_THINKLIGHT = 0x10,
113 TP_NVRAM_MASK_HKT_DISPEXPND = 0x30,
114 TP_NVRAM_MASK_HKT_BRIGHTNESS = 0x20,
115 TP_NVRAM_MASK_LEVEL_BRIGHTNESS = 0x0f,
116 TP_NVRAM_POS_LEVEL_BRIGHTNESS = 0,
117 TP_NVRAM_MASK_MUTE = 0x40,
118 TP_NVRAM_MASK_HKT_VOLUME = 0x80,
119 TP_NVRAM_MASK_LEVEL_VOLUME = 0x0f,
120 TP_NVRAM_POS_LEVEL_VOLUME = 0,
121};
122
5d756db9
HMH		 123/* Misc NVRAM-related */
124enum {
125 TP_NVRAM_LEVEL_VOLUME_MAX = 14,
126};
127
b21a15f6 128/* ACPI HIDs */
9fbdaeb4
MI		 129#define TPACPI_ACPI_IBM_HKEY_HID "IBM0068"
130#define TPACPI_ACPI_LENOVO_HKEY_HID "LEN0068"
437e470c 131#define TPACPI_ACPI_EC_HID "PNP0C09"
b21a15f6
HMH		 132
133/* Input IDs */
134#define TPACPI_HKEY_INPUT_PRODUCT 0x5054 /* "TP" */
135#define TPACPI_HKEY_INPUT_VERSION 0x4101
136
153f8220
HMH		 137/* ACPI \WGSV commands */
138enum {
139 TP_ACPI_WGSV_GET_STATE = 0x01, /* Get state information */
140 TP_ACPI_WGSV_PWR_ON_ON_RESUME = 0x02, /* Resume WWAN powered on */
141 TP_ACPI_WGSV_PWR_OFF_ON_RESUME = 0x03, /* Resume WWAN powered off */
142 TP_ACPI_WGSV_SAVE_STATE = 0x04, /* Save state for S4/S5 */
143};
144
145/* TP_ACPI_WGSV_GET_STATE bits */
146enum {
147 TP_ACPI_WGSV_STATE_WWANEXIST = 0x0001, /* WWAN hw available */
148 TP_ACPI_WGSV_STATE_WWANPWR = 0x0002, /* WWAN radio enabled */
149 TP_ACPI_WGSV_STATE_WWANPWRRES = 0x0004, /* WWAN state at resume */
150 TP_ACPI_WGSV_STATE_WWANBIOSOFF = 0x0008, /* WWAN disabled in BIOS */
151 TP_ACPI_WGSV_STATE_BLTHEXIST = 0x0001, /* BLTH hw available */
152 TP_ACPI_WGSV_STATE_BLTHPWR = 0x0002, /* BLTH radio enabled */
153 TP_ACPI_WGSV_STATE_BLTHPWRRES = 0x0004, /* BLTH state at resume */
154 TP_ACPI_WGSV_STATE_BLTHBIOSOFF = 0x0008, /* BLTH disabled in BIOS */
155 TP_ACPI_WGSV_STATE_UWBEXIST = 0x0010, /* UWB hw available */
156 TP_ACPI_WGSV_STATE_UWBPWR = 0x0020, /* UWB radio enabled */
157};
b21a15f6 158
67bcae6e
HMH		 159/* HKEY events */
160enum tpacpi_hkey_event_t {
161 /* Hotkey-related */
162 TP_HKEY_EV_HOTKEY_BASE = 0x1001, /* first hotkey (FN+F1) */
163 TP_HKEY_EV_BRGHT_UP = 0x1010, /* Brightness up */
164 TP_HKEY_EV_BRGHT_DOWN = 0x1011, /* Brightness down */
165 TP_HKEY_EV_VOL_UP = 0x1015, /* Volume up or unmute */
166 TP_HKEY_EV_VOL_DOWN = 0x1016, /* Volume down or unmute */
167 TP_HKEY_EV_VOL_MUTE = 0x1017, /* Mixer output mute */
168
169 /* Reasons for waking up from S3/S4 */
170 TP_HKEY_EV_WKUP_S3_UNDOCK = 0x2304, /* undock requested, S3 */
171 TP_HKEY_EV_WKUP_S4_UNDOCK = 0x2404, /* undock requested, S4 */
172 TP_HKEY_EV_WKUP_S3_BAYEJ = 0x2305, /* bay ejection req, S3 */
173 TP_HKEY_EV_WKUP_S4_BAYEJ = 0x2405, /* bay ejection req, S4 */
174 TP_HKEY_EV_WKUP_S3_BATLOW = 0x2313, /* battery empty, S3 */
175 TP_HKEY_EV_WKUP_S4_BATLOW = 0x2413, /* battery empty, S4 */
176
177 /* Auto-sleep after eject request */
178 TP_HKEY_EV_BAYEJ_ACK = 0x3003, /* bay ejection complete */
179 TP_HKEY_EV_UNDOCK_ACK = 0x4003, /* undock complete */
180
181 /* Misc bay events */
182 TP_HKEY_EV_OPTDRV_EJ = 0x3006, /* opt. drive tray ejected */
a50245af
HMH		 183 TP_HKEY_EV_HOTPLUG_DOCK = 0x4010, /* docked into hotplug dock
184 or port replicator */
185 TP_HKEY_EV_HOTPLUG_UNDOCK = 0x4011, /* undocked from hotplug
186 dock or port replicator */
67bcae6e
HMH		 187
188 /* User-interface events */
189 TP_HKEY_EV_LID_CLOSE = 0x5001, /* laptop lid closed */
190 TP_HKEY_EV_LID_OPEN = 0x5002, /* laptop lid opened */
191 TP_HKEY_EV_TABLET_TABLET = 0x5009, /* tablet swivel up */
192 TP_HKEY_EV_TABLET_NOTEBOOK = 0x500a, /* tablet swivel down */
193 TP_HKEY_EV_PEN_INSERTED = 0x500b, /* tablet pen inserted */
194 TP_HKEY_EV_PEN_REMOVED = 0x500c, /* tablet pen removed */
195 TP_HKEY_EV_BRGHT_CHANGED = 0x5010, /* backlight control event */
196
2d43f671
HMH		 197 /* Key-related user-interface events */
198 TP_HKEY_EV_KEY_NUMLOCK = 0x6000, /* NumLock key pressed */
199 TP_HKEY_EV_KEY_FN = 0x6005, /* Fn key pressed? E420 */
67ab6248 200 TP_HKEY_EV_KEY_FN_ESC = 0x6060, /* Fn+Esc key pressed X240 */
2d43f671 201
67bcae6e
HMH		 202 /* Thermal events */
203 TP_HKEY_EV_ALARM_BAT_HOT = 0x6011, /* battery too hot */
204 TP_HKEY_EV_ALARM_BAT_XHOT = 0x6012, /* battery critically hot */
205 TP_HKEY_EV_ALARM_SENSOR_HOT = 0x6021, /* sensor too hot */
206 TP_HKEY_EV_ALARM_SENSOR_XHOT = 0x6022, /* sensor critically hot */
207 TP_HKEY_EV_THM_TABLE_CHANGED = 0x6030, /* thermal table changed */
208
6f62bc3e
RH		 209 /* AC-related events */
210 TP_HKEY_EV_AC_CHANGED = 0x6040, /* AC status changed */
2d43f671 211
67bcae6e
HMH		 212 /* Misc */
213 TP_HKEY_EV_RFKILL_CHANGED = 0x7000, /* rfkill switch changed */
214};
215
b21a15f6
HMH		 216/****************************************************************************
217 * Main driver
218 */
219
e0c7dfe7
HMH		 220#define TPACPI_NAME "thinkpad"
221#define TPACPI_DESC "ThinkPad ACPI Extras"
222#define TPACPI_FILE TPACPI_NAME "_acpi"
223#define TPACPI_URL "http://ibm-acpi.sf.net/"
224#define TPACPI_MAIL "ibm-acpi-devel@lists.sourceforge.net"
b21a15f6 225
e0c7dfe7
HMH		 226#define TPACPI_PROC_DIR "ibm"
227#define TPACPI_ACPI_EVENT_PREFIX "ibm"
228#define TPACPI_DRVR_NAME TPACPI_FILE
95e57ab2 229#define TPACPI_DRVR_SHORTNAME "tpacpi"
e0c7dfe7 230#define TPACPI_HWMON_DRVR_NAME TPACPI_NAME "_hwmon"
b21a15f6 231
95e57ab2 232#define TPACPI_NVRAM_KTHREAD_NAME "ktpacpi_nvramd"
e0e3c061 233#define TPACPI_WORKQUEUE_NAME "ktpacpid"
95e57ab2 234
e0c7dfe7 235#define TPACPI_MAX_ACPI_ARGS 3
b21a15f6 236
7ff8d62f 237/* Debugging printk groups */
0c78039f 238#define TPACPI_DBG_ALL 0xffff
73a94d86 239#define TPACPI_DBG_DISCLOSETASK 0x8000
0c78039f
HMH		 240#define TPACPI_DBG_INIT 0x0001
241#define TPACPI_DBG_EXIT 0x0002
bee4cd9b 242#define TPACPI_DBG_RFKILL 0x0004
56e2c200 243#define TPACPI_DBG_HKEY 0x0008
74a60c0f 244#define TPACPI_DBG_FAN 0x0010
0e501834 245#define TPACPI_DBG_BRGHT 0x0020
329e4e18 246#define TPACPI_DBG_MIXER 0x0040
0c78039f 247
35ff8b9f
HMH		 248#define onoff(status, bit) ((status) & (1 << (bit)) ? "on" : "off")
249#define enabled(status, bit) ((status) & (1 << (bit)) ? "enabled" : "disabled")
250#define strlencmp(a, b) (strncmp((a), (b), strlen(b)))
0c78039f 251
0c78039f
HMH		 252
253/****************************************************************************
b21a15f6 254 * Driver-wide structs and misc. variables
0c78039f
HMH		 255 */
256
257struct ibm_struct;
258
259struct tp_acpi_drv_struct {
260 const struct acpi_device_id *hid;
261 struct acpi_driver *driver;
262
263 void (*notify) (struct ibm_struct *, u32);
264 acpi_handle *handle;
265 u32 type;
266 struct acpi_device *device;
267};
268
269struct ibm_struct {
270 char *name;
271
887965e6 272 int (*read) (struct seq_file *);
0c78039f
HMH		 273 int (*write) (char *);
274 void (*exit) (void);
275 void (*resume) (void);
fd3c3a42 276 void (*suspend) (void);
90d9d3c7 277 void (*shutdown) (void);
0c78039f
HMH		 278
279 struct list_head all_drivers;
280
281 struct tp_acpi_drv_struct *acpi;
282
283 struct {
284 u8 acpi_driver_registered:1;
285 u8 acpi_notify_installed:1;
286 u8 proc_created:1;
287 u8 init_called:1;
288 u8 experimental:1;
289 } flags;
290};
291
292struct ibm_init_struct {
293 char param[32];
294
295 int (*init) (struct ibm_init_struct *);
d161a13f 296 umode_t base_procfs_mode;
0c78039f
HMH		 297 struct ibm_struct *data;
298};
299
300static struct {
0c78039f
HMH		 301 u32 bluetooth:1;
302 u32 hotkey:1;
303 u32 hotkey_mask:1;
304 u32 hotkey_wlsw:1;
6c231bd5 305 u32 hotkey_tablet:1;
bb28f3d5 306 u32 kbdlight:1;
0c78039f
HMH		 307 u32 light:1;
308 u32 light_status:1;
b5972796 309 u32 bright_acpimode:1;
77775838 310 u32 bright_unkfw:1;
0c78039f 311 u32 wan:1;
0045c0aa 312 u32 uwb:1;
0c78039f 313 u32 fan_ctrl_status_undef:1;
d7377247 314 u32 second_fan:1;
60201732 315 u32 beep_needs_two_args:1;
a112ceee 316 u32 mixer_no_level_control:1;
0c78039f
HMH		 317 u32 input_device_registered:1;
318 u32 platform_drv_registered:1;
319 u32 platform_drv_attrs_registered:1;
320 u32 sensors_pdrv_registered:1;
321 u32 sensors_pdrv_attrs_registered:1;
322 u32 sensors_pdev_attrs_registered:1;
323 u32 hotkey_poll_active:1;
f23a5bcb 324 u32 has_adaptive_kbd:1;
0c78039f
HMH		 325} tp_features;
326
92889022
HMH		 327static struct {
328 u16 hotkey_mask_ff:1;
c7ac6291 329 u16 volume_ctrl_forbidden:1;
92889022
HMH		 330} tp_warned;
331
0c78039f
HMH		 332struct thinkpad_id_data {
333 unsigned int vendor; /* ThinkPad vendor:
334 * PCI_VENDOR_ID_IBM/PCI_VENDOR_ID_LENOVO */
335
336 char *bios_version_str; /* Something like 1ZET51WW (1.03z) */
337 char *ec_version_str; /* Something like 1ZHT51WW-1.04a */
338
050df107 339 u16 bios_model; /* 1Y = 0x5931, 0 = unknown */
0c78039f 340 u16 ec_model;
050df107
HMH		 341 u16 bios_release; /* 1ZETK1WW = 0x314b, 0 = unknown */
342 u16 ec_release;
0c78039f 343
8c74adbc
HMH		 344 char *model_str; /* ThinkPad T43 */
345 char *nummodel_str; /* 9384A9C for a 9384-A9C model */
0c78039f 346};
0c78039f
HMH		 347static struct thinkpad_id_data thinkpad_id;
348
8fef502e
HMH		 349static enum {
350 TPACPI_LIFE_INIT = 0,
351 TPACPI_LIFE_RUNNING,
352 TPACPI_LIFE_EXITING,
353} tpacpi_lifecycle;
354
b21a15f6
HMH		 355static int experimental;
356static u32 dbg_level;
357
e0e3c061
HMH		 358static struct workqueue_struct *tpacpi_wq;
359
75bd3bf2
HMH		 360enum led_status_t {
361 TPACPI_LED_OFF = 0,
362 TPACPI_LED_ON,
363 TPACPI_LED_BLINK,
364};
365
4fa6811b
HMH		 366/* Special LED class that can defer work */
367struct tpacpi_led_classdev {
368 struct led_classdev led_classdev;
369 struct work_struct work;
75bd3bf2 370 enum led_status_t new_state;
edf2d778 371 int led;
4fa6811b
HMH		 372};
373
77775838
HMH		 374/* brightness level capabilities */
375static unsigned int bright_maxlvl; /* 0 = unknown */
376
a73f3091
HMH		 377#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
378static int dbg_wlswemul;
90ab5ee9 379static bool tpacpi_wlsw_emulstate;
a73f3091 380static int dbg_bluetoothemul;
90ab5ee9 381static bool tpacpi_bluetooth_emulstate;
a73f3091 382static int dbg_wwanemul;
90ab5ee9 383static bool tpacpi_wwan_emulstate;
0045c0aa 384static int dbg_uwbemul;
90ab5ee9 385static bool tpacpi_uwb_emulstate;
a73f3091
HMH		 386#endif
387
388
3dcc2c3b
HMH		 389/*************************************************************************
390 * Debugging helpers
391 */
392
0978e012
JP		 393#define dbg_printk(a_dbg_level, format, arg...) \
394do { \
395 if (dbg_level & (a_dbg_level)) \
396 printk(KERN_DEBUG pr_fmt("%s: " format), \
397 __func__, ##arg); \
398} while (0)
3dcc2c3b
HMH		 399
400#ifdef CONFIG_THINKPAD_ACPI_DEBUG
401#define vdbg_printk dbg_printk
402static const char *str_supported(int is_supported);
403#else
0978e012
JP		 404static inline const char *str_supported(int is_supported) { return ""; }
405#define vdbg_printk(a_dbg_level, format, arg...) \
efd85cf8 406 do { if (0) no_printk(format, ##arg); } while (0)
3dcc2c3b
HMH		 407#endif
408
73a94d86
HMH		 409static void tpacpi_log_usertask(const char * const what)
410{
0978e012
JP		 411 printk(KERN_DEBUG pr_fmt("%s: access by process with PID %d\n"),
412 what, task_tgid_vnr(current));
73a94d86
HMH		 413}
414
0978e012
JP		 415#define tpacpi_disclose_usertask(what, format, arg...) \
416do { \
417 if (unlikely((dbg_level & TPACPI_DBG_DISCLOSETASK) && \
418 (tpacpi_lifecycle == TPACPI_LIFE_RUNNING))) { \
419 printk(KERN_DEBUG pr_fmt("%s: PID %d: " format), \
420 what, task_tgid_vnr(current), ## arg); \
421 } \
422} while (0)
3dcc2c3b 423
7d95a3d5
HMH		 424/*
425 * Quirk handling helpers
426 *
427 * ThinkPad IDs and versions seen in the field so far
428 * are two-characters from the set [0-9A-Z], i.e. base 36.
429 *
430 * We use values well outside that range as specials.
431 */
432
433#define TPACPI_MATCH_ANY 0xffffU
434#define TPACPI_MATCH_UNKNOWN 0U
435
436/* TPID('1', 'Y') == 0x5931 */
437#define TPID(__c1, __c2) (((__c2) << 8) | (__c1))
438
439#define TPACPI_Q_IBM(__id1, __id2, __quirk) \
440 { .vendor = PCI_VENDOR_ID_IBM, \
441 .bios = TPID(__id1, __id2), \
442 .ec = TPACPI_MATCH_ANY, \
443 .quirks = (__quirk) }
444
445#define TPACPI_Q_LNV(__id1, __id2, __quirk) \
446 { .vendor = PCI_VENDOR_ID_LENOVO, \
447 .bios = TPID(__id1, __id2), \
448 .ec = TPACPI_MATCH_ANY, \
449 .quirks = (__quirk) }
450
a112ceee
HMH		 451#define TPACPI_QEC_LNV(__id1, __id2, __quirk) \
452 { .vendor = PCI_VENDOR_ID_LENOVO, \
453 .bios = TPACPI_MATCH_ANY, \
454 .ec = TPID(__id1, __id2), \
455 .quirks = (__quirk) }
456
7d95a3d5
HMH		 457struct tpacpi_quirk {
458 unsigned int vendor;
459 u16 bios;
460 u16 ec;
461 unsigned long quirks;
462};
463
464/**
465 * tpacpi_check_quirks() - search BIOS/EC version on a list
466 * @qlist: array of &struct tpacpi_quirk
467 * @qlist_size: number of elements in @qlist
468 *
469 * Iterates over a quirks list until one is found that matches the
470 * ThinkPad's vendor, BIOS and EC model.
471 *
472 * Returns 0 if nothing matches, otherwise returns the quirks field of
473 * the matching &struct tpacpi_quirk entry.
474 *
475 * The match criteria is: vendor, ec and bios much match.
476 */
477static unsigned long __init tpacpi_check_quirks(
478 const struct tpacpi_quirk *qlist,
479 unsigned int qlist_size)
480{
481 while (qlist_size) {
482 if ((qlist->vendor == thinkpad_id.vendor ||
483 qlist->vendor == TPACPI_MATCH_ANY) &&
484 (qlist->bios == thinkpad_id.bios_model ||
485 qlist->bios == TPACPI_MATCH_ANY) &&
486 (qlist->ec == thinkpad_id.ec_model ||
487 qlist->ec == TPACPI_MATCH_ANY))
488 return qlist->quirks;
489
490 qlist_size--;
491 qlist++;
492 }
493 return 0;
494}
495
e28393c0
HMH		 496static inline bool __pure __init tpacpi_is_lenovo(void)
497{
498 return thinkpad_id.vendor == PCI_VENDOR_ID_LENOVO;
499}
500
501static inline bool __pure __init tpacpi_is_ibm(void)
502{
503 return thinkpad_id.vendor == PCI_VENDOR_ID_IBM;
504}
7d95a3d5 505
56b6aeb0
HMH		 506/****************************************************************************
507 ****************************************************************************
508 *
509 * ACPI Helpers and device model
510 *
511 ****************************************************************************
512 ****************************************************************************/
513
514/*************************************************************************
515 * ACPI basic handles
516 */
1da177e4 517
94954cc6 518static acpi_handle root_handle;
437e470c 519static acpi_handle ec_handle;
1da177e4 520
e0c7dfe7 521#define TPACPI_HANDLE(object, parent, paths...) \
1da177e4 522 static acpi_handle object##_handle; \
3bd01896 523 static const acpi_handle * const object##_parent __initconst = \
ef07a5ab
HMH		 524 &parent##_handle; \
525 static char *object##_paths[] __initdata = { paths }
1da177e4 526
e0c7dfe7
HMH		 527TPACPI_HANDLE(ecrd, ec, "ECRD"); /* 570 */
528TPACPI_HANDLE(ecwr, ec, "ECWR"); /* 570 */
78f81cc4 529
35ff8b9f
HMH		 530TPACPI_HANDLE(cmos, root, "\\UCMS", /* R50, R50e, R50p, R51, */
531 /* T4x, X31, X40 */
78f81cc4
BD		 532 "\\CMOS", /* A3x, G4x, R32, T23, T30, X22-24, X30 */
533 "\\CMS", /* R40, R40e */
56b6aeb0 534 ); /* all others */
78f81cc4 535
e0c7dfe7 536TPACPI_HANDLE(hkey, ec, "\\_SB.HKEY", /* 600e/x, 770e, 770x */
78f81cc4
BD		 537 "^HKEY", /* R30, R31 */
538 "HKEY", /* all others */
56b6aeb0 539 ); /* 570 */
78f81cc4 540
56b6aeb0
HMH		 541/*************************************************************************
542 * ACPI helpers
a8b7a662
HMH		 543 */
544
1da177e4 545static int acpi_evalf(acpi_handle handle,
eceeb437 546 int *res, char *method, char *fmt, ...)
1da177e4
LT		 547{
548 char *fmt0 = fmt;
78f81cc4 549 struct acpi_object_list params;
e0c7dfe7 550 union acpi_object in_objs[TPACPI_MAX_ACPI_ARGS];
78f81cc4
BD		 551 struct acpi_buffer result, *resultp;
552 union acpi_object out_obj;
553 acpi_status status;
554 va_list ap;
555 char res_type;
556 int success;
557 int quiet;
1da177e4
LT		 558
559 if (!*fmt) {
0978e012 560 pr_err("acpi_evalf() called with empty format\n");
1da177e4
LT		 561 return 0;
562 }
563
564 if (*fmt == 'q') {
565 quiet = 1;
566 fmt++;
567 } else
568 quiet = 0;
569
570 res_type = *(fmt++);
571
572 params.count = 0;
573 params.pointer = &in_objs[0];
574
575 va_start(ap, fmt);
576 while (*fmt) {
577 char c = *(fmt++);
578 switch (c) {
579 case 'd': /* int */
580 in_objs[params.count].integer.value = va_arg(ap, int);
581 in_objs[params.count++].type = ACPI_TYPE_INTEGER;
582 break;
78f81cc4 583 /* add more types as needed */
1da177e4 584 default:
0978e012 585 pr_err("acpi_evalf() called "
1da177e4 586 "with invalid format character '%c'\n", c);
21365851 587 va_end(ap);
1da177e4
LT		 588 return 0;
589 }
590 }
591 va_end(ap);
592
78f81cc4
BD		 593 if (res_type != 'v') {
594 result.length = sizeof(out_obj);
595 result.pointer = &out_obj;
596 resultp = &result;
597 } else
598 resultp = NULL;
1da177e4 599
78f81cc4 600 status = acpi_evaluate_object(handle, method, &params, resultp);
1da177e4
LT		 601
602 switch (res_type) {
78f81cc4 603 case 'd': /* int */
263f4a30
HMH		 604 success = (status == AE_OK &&
605 out_obj.type == ACPI_TYPE_INTEGER);
606 if (success && res)
eceeb437 607 *res = out_obj.integer.value;
1da177e4 608 break;
78f81cc4 609 case 'v': /* void */
1da177e4
LT		 610 success = status == AE_OK;
611 break;
78f81cc4 612 /* add more types as needed */
1da177e4 613 default:
0978e012 614 pr_err("acpi_evalf() called "
1da177e4
LT		 615 "with invalid format character '%c'\n", res_type);
616 return 0;
617 }
618
56b6aeb0 619 if (!success && !quiet)
0978e012 620 pr_err("acpi_evalf(%s, %s, ...) failed: %s\n",
263f4a30 621 method, fmt0, acpi_format_exception(status));
56b6aeb0
HMH		 622
623 return success;
624}
625
35ff8b9f 626static int acpi_ec_read(int i, u8 *p)
56b6aeb0
HMH		 627{
628 int v;
629
630 if (ecrd_handle) {
631 if (!acpi_evalf(ecrd_handle, &v, NULL, "dd", i))
632 return 0;
633 *p = v;
634 } else {
635 if (ec_read(i, p) < 0)
636 return 0;
637 }
638
639 return 1;
640}
641
642static int acpi_ec_write(int i, u8 v)
643{
644 if (ecwr_handle) {
645 if (!acpi_evalf(ecwr_handle, NULL, NULL, "vdd", i, v))
646 return 0;
647 } else {
648 if (ec_write(i, v) < 0)
649 return 0;
650 }
651
652 return 1;
653}
654
c9bea99c
HMH		 655static int issue_thinkpad_cmos_command(int cmos_cmd)
656{
657 if (!cmos_handle)
658 return -ENXIO;
659
660 if (!acpi_evalf(cmos_handle, NULL, NULL, "vd", cmos_cmd))
661 return -EIO;
662
663 return 0;
664}
665
56b6aeb0
HMH		 666/*************************************************************************
667 * ACPI device model
668 */
669
35ff8b9f
HMH		 670#define TPACPI_ACPIHANDLE_INIT(object) \
671 drv_acpi_handle_init(#object, &object##_handle, *object##_parent, \
ef07a5ab 672 object##_paths, ARRAY_SIZE(object##_paths))
f74a27d4 673
ef07a5ab
HMH		 674static void __init drv_acpi_handle_init(const char *name,
675 acpi_handle *handle, const acpi_handle parent,
676 char **paths, const int num_paths)
56b6aeb0
HMH		 677{
678 int i;
679 acpi_status status;
680
5ae930e6
HMH		 681 vdbg_printk(TPACPI_DBG_INIT, "trying to locate ACPI handle for %s\n",
682 name);
683
56b6aeb0
HMH		 684 for (i = 0; i < num_paths; i++) {
685 status = acpi_get_handle(parent, paths[i], handle);
686 if (ACPI_SUCCESS(status)) {
5ae930e6
HMH		 687 dbg_printk(TPACPI_DBG_INIT,
688 "Found ACPI handle %s for %s\n",
ef07a5ab 689 paths[i], name);
56b6aeb0
HMH		 690 return;
691 }
692 }
693
5ae930e6
HMH		 694 vdbg_printk(TPACPI_DBG_INIT, "ACPI handle for %s not found\n",
695 name);
56b6aeb0
HMH		 696 *handle = NULL;
697}
698
437e470c
HMH		 699static acpi_status __init tpacpi_acpi_handle_locate_callback(acpi_handle handle,
700 u32 level, void *context, void **return_value)
701{
46445b6b
AL		 702 struct acpi_device *dev;
703 if (!strcmp(context, "video")) {
704 if (acpi_bus_get_device(handle, &dev))
705 return AE_OK;
706 if (strcmp(ACPI_VIDEO_HID, acpi_device_hid(dev)))
707 return AE_OK;
708 }
709
437e470c
HMH		 710 *(acpi_handle *)return_value = handle;
711
712 return AE_CTRL_TERMINATE;
713}
714
715static void __init tpacpi_acpi_handle_locate(const char *name,
716 const char *hid,
717 acpi_handle *handle)
718{
719 acpi_status status;
720 acpi_handle device_found;
721
46445b6b 722 BUG_ON(!name || !handle);
437e470c
HMH		 723 vdbg_printk(TPACPI_DBG_INIT,
724 "trying to locate ACPI handle for %s, using HID %s\n",
46445b6b 725 name, hid ? hid : "NULL");
437e470c
HMH		 726
727 memset(&device_found, 0, sizeof(device_found));
728 status = acpi_get_devices(hid, tpacpi_acpi_handle_locate_callback,
729 (void *)name, &device_found);
730
731 *handle = NULL;
732
733 if (ACPI_SUCCESS(status)) {
734 *handle = device_found;
735 dbg_printk(TPACPI_DBG_INIT,
736 "Found ACPI handle for %s\n", name);
737 } else {
738 vdbg_printk(TPACPI_DBG_INIT,
739 "Could not locate an ACPI handle for %s: %s\n",
740 name, acpi_format_exception(status));
741 }
742}
743
8d376cd6 744static void dispatch_acpi_notify(acpi_handle handle, u32 event, void *data)
56b6aeb0
HMH		 745{
746 struct ibm_struct *ibm = data;
747
8fef502e
HMH		 748 if (tpacpi_lifecycle != TPACPI_LIFE_RUNNING)
749 return;
750
8d376cd6 751 if (!ibm || !ibm->acpi || !ibm->acpi->notify)
56b6aeb0
HMH		 752 return;
753
8d376cd6 754 ibm->acpi->notify(ibm, event);
56b6aeb0
HMH		 755}
756
8d376cd6 757static int __init setup_acpi_notify(struct ibm_struct *ibm)
56b6aeb0
HMH		 758{
759 acpi_status status;
5ae930e6 760 int rc;
56b6aeb0 761
8d376cd6
HMH		 762 BUG_ON(!ibm->acpi);
763
764 if (!*ibm->acpi->handle)
56b6aeb0
HMH		 765 return 0;
766
5ae930e6 767 vdbg_printk(TPACPI_DBG_INIT,
fe08bc4b
HMH		 768 "setting up ACPI notify for %s\n", ibm->name);
769
5ae930e6
HMH		 770 rc = acpi_bus_get_device(*ibm->acpi->handle, &ibm->acpi->device);
771 if (rc < 0) {
0978e012 772 pr_err("acpi_bus_get_device(%s) failed: %d\n", ibm->name, rc);
56b6aeb0
HMH		 773 return -ENODEV;
774 }
775
db89b4f0 776 ibm->acpi->device->driver_data = ibm;
8d376cd6 777 sprintf(acpi_device_class(ibm->acpi->device), "%s/%s",
e0c7dfe7 778 TPACPI_ACPI_EVENT_PREFIX,
643f12db 779 ibm->name);
56b6aeb0 780
8d376cd6
HMH		 781 status = acpi_install_notify_handler(*ibm->acpi->handle,
782 ibm->acpi->type, dispatch_acpi_notify, ibm);
56b6aeb0
HMH		 783 if (ACPI_FAILURE(status)) {
784 if (status == AE_ALREADY_EXISTS) {
0978e012
JP		 785 pr_notice("another device driver is already "
786 "handling %s events\n", ibm->name);
56b6aeb0 787 } else {
0978e012 788 pr_err("acpi_install_notify_handler(%s) failed: %s\n",
72f19921 789 ibm->name, acpi_format_exception(status));
56b6aeb0
HMH		 790 }
791 return -ENODEV;
792 }
8d376cd6 793 ibm->flags.acpi_notify_installed = 1;
56b6aeb0
HMH		 794 return 0;
795}
796
8d376cd6 797static int __init tpacpi_device_add(struct acpi_device *device)
56b6aeb0
HMH		 798{
799 return 0;
800}
801
6700121b 802static int __init register_tpacpi_subdriver(struct ibm_struct *ibm)
56b6aeb0 803{
5ae930e6 804 int rc;
56b6aeb0 805
fe08bc4b
HMH		 806 dbg_printk(TPACPI_DBG_INIT,
807 "registering %s as an ACPI driver\n", ibm->name);
808
8d376cd6
HMH		 809 BUG_ON(!ibm->acpi);
810
811 ibm->acpi->driver = kzalloc(sizeof(struct acpi_driver), GFP_KERNEL);
812 if (!ibm->acpi->driver) {
0978e012 813 pr_err("failed to allocate memory for ibm->acpi->driver\n");
5fba344c 814 return -ENOMEM;
56b6aeb0
HMH		 815 }
816
e0c7dfe7 817 sprintf(ibm->acpi->driver->name, "%s_%s", TPACPI_NAME, ibm->name);
8d376cd6 818 ibm->acpi->driver->ids = ibm->acpi->hid;
1ba90e3a 819
8d376cd6 820 ibm->acpi->driver->ops.add = &tpacpi_device_add;
56b6aeb0 821
5ae930e6
HMH		 822 rc = acpi_bus_register_driver(ibm->acpi->driver);
823 if (rc < 0) {
0978e012 824 pr_err("acpi_bus_register_driver(%s) failed: %d\n",
1ba90e3a 825 ibm->name, rc);
8d376cd6
HMH		 826 kfree(ibm->acpi->driver);
827 ibm->acpi->driver = NULL;
5ae930e6 828 } else if (!rc)
8d376cd6 829 ibm->flags.acpi_driver_registered = 1;
56b6aeb0 830
5ae930e6 831 return rc;
56b6aeb0
HMH		 832}
833
834
835/****************************************************************************
836 ****************************************************************************
837 *
838 * Procfs Helpers
839 *
840 ****************************************************************************
841 ****************************************************************************/
842
887965e6 843static int dispatch_proc_show(struct seq_file *m, void *v)
56b6aeb0 844{
887965e6 845 struct ibm_struct *ibm = m->private;
56b6aeb0
HMH		 846
847 if (!ibm || !ibm->read)
848 return -EINVAL;
887965e6
AD		 849 return ibm->read(m);
850}
56b6aeb0 851
887965e6
AD		 852static int dispatch_proc_open(struct inode *inode, struct file *file)
853{
d9dda78b 854 return single_open(file, dispatch_proc_show, PDE_DATA(inode));
56b6aeb0
HMH		 855}
856
887965e6 857static ssize_t dispatch_proc_write(struct file *file,
35ff8b9f 858 const char __user *userbuf,
887965e6 859 size_t count, loff_t *pos)
56b6aeb0 860{
d9dda78b 861 struct ibm_struct *ibm = PDE_DATA(file_inode(file));
56b6aeb0
HMH		 862 char *kernbuf;
863 int ret;
864
865 if (!ibm || !ibm->write)
866 return -EINVAL;
5b05d469
MB		 867 if (count > PAGE_SIZE - 2)
868 return -EINVAL;
56b6aeb0
HMH		 869
870 kernbuf = kmalloc(count + 2, GFP_KERNEL);
871 if (!kernbuf)
872 return -ENOMEM;
1da177e4 873
56b6aeb0
HMH		 874 if (copy_from_user(kernbuf, userbuf, count)) {
875 kfree(kernbuf);
876 return -EFAULT;
877 }
1da177e4 878
56b6aeb0
HMH		 879 kernbuf[count] = 0;
880 strcat(kernbuf, ",");
881 ret = ibm->write(kernbuf);
882 if (ret == 0)
883 ret = count;
1da177e4 884
56b6aeb0
HMH		 885 kfree(kernbuf);
886
887 return ret;
1da177e4
LT		 888}
889
887965e6
AD		 890static const struct file_operations dispatch_proc_fops = {
891 .owner = THIS_MODULE,
892 .open = dispatch_proc_open,
893 .read = seq_read,
894 .llseek = seq_lseek,
895 .release = single_release,
896 .write = dispatch_proc_write,
897};
898
1da177e4
LT		 899static char *next_cmd(char **cmds)
900{
901 char *start = *cmds;
902 char *end;
903
904 while ((end = strchr(start, ',')) && end == start)
905 start = end + 1;
906
907 if (!end)
908 return NULL;
909
910 *end = 0;
911 *cmds = end + 1;
912 return start;
913}
914
56b6aeb0 915
54ae1501
HMH		 916/****************************************************************************
917 ****************************************************************************
918 *
7f5d1cd6 919 * Device model: input, hwmon and platform
54ae1501
HMH		 920 *
921 ****************************************************************************
922 ****************************************************************************/
923
94954cc6 924static struct platform_device *tpacpi_pdev;
7fd40029 925static struct platform_device *tpacpi_sensors_pdev;
1beeffe4 926static struct device *tpacpi_hwmon;
7f5d1cd6 927static struct input_dev *tpacpi_inputdev;
8523ed6f 928static struct mutex tpacpi_inputdev_send_mutex;
b21a15f6 929static LIST_HEAD(tpacpi_all_drivers);
e295e850 930
3567a4e2 931#ifdef CONFIG_PM_SLEEP
4959a781 932static int tpacpi_suspend_handler(struct device *dev)
083f1760
HMH		 933{
934 struct ibm_struct *ibm, *itmp;
935
936 list_for_each_entry_safe(ibm, itmp,
937 &tpacpi_all_drivers,
938 all_drivers) {
939 if (ibm->suspend)
fd3c3a42 940 (ibm->suspend)();
083f1760
HMH		 941 }
942
943 return 0;
944}
945
4959a781 946static int tpacpi_resume_handler(struct device *dev)
e295e850
HMH		 947{
948 struct ibm_struct *ibm, *itmp;
949
950 list_for_each_entry_safe(ibm, itmp,
951 &tpacpi_all_drivers,
952 all_drivers) {
953 if (ibm->resume)
954 (ibm->resume)();
955 }
956
957 return 0;
958}
3567a4e2 959#endif
e295e850 960
4959a781
RW		 961static SIMPLE_DEV_PM_OPS(tpacpi_pm,
962 tpacpi_suspend_handler, tpacpi_resume_handler);
963
90d9d3c7
HMH		 964static void tpacpi_shutdown_handler(struct platform_device *pdev)
965{
966 struct ibm_struct *ibm, *itmp;
967
968 list_for_each_entry_safe(ibm, itmp,
969 &tpacpi_all_drivers,
970 all_drivers) {
971 if (ibm->shutdown)
972 (ibm->shutdown)();
973 }
974}
975
54ae1501
HMH		 976static struct platform_driver tpacpi_pdriver = {
977 .driver = {
e0c7dfe7 978 .name = TPACPI_DRVR_NAME,
4959a781 979 .pm = &tpacpi_pm,
54ae1501 980 },
90d9d3c7 981 .shutdown = tpacpi_shutdown_handler,
54ae1501
HMH		 982};
983
7fd40029
HMH		 984static struct platform_driver tpacpi_hwmon_pdriver = {
985 .driver = {
e0c7dfe7 986 .name = TPACPI_HWMON_DRVR_NAME,
7fd40029
HMH		 987 },
988};
54ae1501 989
176750d6 990/*************************************************************************
b21a15f6 991 * sysfs support helpers
176750d6
HMH		 992 */
993
b21a15f6
HMH		 994struct attribute_set {
995 unsigned int members, max_members;
996 struct attribute_group group;
176750d6
HMH		 997};
998
7252374a
HMH		 999struct attribute_set_obj {
1000 struct attribute_set s;
1001 struct attribute *a;
1002} __attribute__((packed));
1003
1004static struct attribute_set *create_attr_set(unsigned int max_members,
35ff8b9f 1005 const char *name)
7252374a
HMH		 1006{
1007 struct attribute_set_obj *sobj;
1008
1009 if (max_members == 0)
1010 return NULL;
1011
1012 /* Allocates space for implicit NULL at the end too */
1013 sobj = kzalloc(sizeof(struct attribute_set_obj) +
1014 max_members * sizeof(struct attribute *),
1015 GFP_KERNEL);
1016 if (!sobj)
1017 return NULL;
1018 sobj->s.max_members = max_members;
1019 sobj->s.group.attrs = &sobj->a;
1020 sobj->s.group.name = name;
1021
1022 return &sobj->s;
1023}
1024
f74a27d4
HMH		 1025#define destroy_attr_set(_set) \
1026 kfree(_set);
1027
7252374a 1028/* not multi-threaded safe, use it in a single thread per set */
35ff8b9f 1029static int add_to_attr_set(struct attribute_set *s, struct attribute *attr)
7252374a
HMH		 1030{
1031 if (!s || !attr)
1032 return -EINVAL;
1033
1034 if (s->members >= s->max_members)
1035 return -ENOMEM;
1036
1037 s->group.attrs[s->members] = attr;
1038 s->members++;
1039
1040 return 0;
1041}
1042
35ff8b9f 1043static int add_many_to_attr_set(struct attribute_set *s,
7252374a
HMH		 1044 struct attribute **attr,
1045 unsigned int count)
1046{
1047 int i, res;
1048
1049 for (i = 0; i < count; i++) {
1050 res = add_to_attr_set(s, attr[i]);
1051 if (res)
1052 return res;
1053 }
1054
1055 return 0;
1056}
1057
35ff8b9f 1058static void delete_attr_set(struct attribute_set *s, struct kobject *kobj)
7252374a
HMH		 1059{
1060 sysfs_remove_group(kobj, &s->group);
1061 destroy_attr_set(s);
1062}
1063
f74a27d4
HMH		 1064#define register_attr_set_with_sysfs(_attr_set, _kobj) \
1065 sysfs_create_group(_kobj, &_attr_set->group)
1066
7252374a
HMH		 1067static int parse_strtoul(const char *buf,
1068 unsigned long max, unsigned long *value)
1069{
1070 char *endp;
1071
e7d2860b
AGR		 1072 *value = simple_strtoul(skip_spaces(buf), &endp, 0);
1073 endp = skip_spaces(endp);
7252374a
HMH		 1074 if (*endp || *value > max)
1075 return -EINVAL;
1076
1077 return 0;
1078}
1079
d64c81c4
HMH		 1080static void tpacpi_disable_brightness_delay(void)
1081{
1082 if (acpi_evalf(hkey_handle, NULL, "PWMS", "qvd", 0))
0978e012 1083 pr_notice("ACPI backlight control delay disabled\n");
d64c81c4
HMH		 1084}
1085
19d337df
JB		 1086static void printk_deprecated_attribute(const char * const what,
1087 const char * const details)
1088{
1089 tpacpi_log_usertask("deprecated sysfs attribute");
0978e012 1090 pr_warn("WARNING: sysfs attribute %s is deprecated and "
19d337df
JB		 1091 "will be removed. %s\n",
1092 what, details);
1093}
1094
1095/*************************************************************************
1096 * rfkill and radio control support helpers
1097 */
1098
1099/*
1100 * ThinkPad-ACPI firmware handling model:
1101 *
1102 * WLSW (master wireless switch) is event-driven, and is common to all
1103 * firmware-controlled radios. It cannot be controlled, just monitored,
1104 * as expected. It overrides all radio state in firmware
1105 *
1106 * The kernel, a masked-off hotkey, and WLSW can change the radio state
1107 * (TODO: verify how WLSW interacts with the returned radio state).
1108 *
1109 * The only time there are shadow radio state changes, is when
1110 * masked-off hotkeys are used.
1111 */
1112
1113/*
1114 * Internal driver API for radio state:
1115 *
1116 * int: < 0 = error, otherwise enum tpacpi_rfkill_state
1117 * bool: true means radio blocked (off)
1118 */
1119enum tpacpi_rfkill_state {
1120 TPACPI_RFK_RADIO_OFF = 0,
1121 TPACPI_RFK_RADIO_ON
1122};
1123
1124/* rfkill switches */
1125enum tpacpi_rfk_id {
1126 TPACPI_RFK_BLUETOOTH_SW_ID = 0,
1127 TPACPI_RFK_WWAN_SW_ID,
1128 TPACPI_RFK_UWB_SW_ID,
1129 TPACPI_RFK_SW_MAX
1130};
1131
1132static const char *tpacpi_rfkill_names[] = {
1133 [TPACPI_RFK_BLUETOOTH_SW_ID] = "bluetooth",
1134 [TPACPI_RFK_WWAN_SW_ID] = "wwan",
1135 [TPACPI_RFK_UWB_SW_ID] = "uwb",
1136 [TPACPI_RFK_SW_MAX] = NULL
1137};
1138
1139/* ThinkPad-ACPI rfkill subdriver */
1140struct tpacpi_rfk {
1141 struct rfkill *rfkill;
1142 enum tpacpi_rfk_id id;
1143 const struct tpacpi_rfk_ops *ops;
1144};
1145
1146struct tpacpi_rfk_ops {
1147 /* firmware interface */
1148 int (*get_status)(void);
1149 int (*set_status)(const enum tpacpi_rfkill_state);
1150};
1151
1152static struct tpacpi_rfk *tpacpi_rfkill_switches[TPACPI_RFK_SW_MAX];
1153
1154/* Query FW and update rfkill sw state for a given rfkill switch */
1155static int tpacpi_rfk_update_swstate(const struct tpacpi_rfk *tp_rfk)
1156{
1157 int status;
1158
1159 if (!tp_rfk)
1160 return -ENODEV;
1161
1162 status = (tp_rfk->ops->get_status)();
1163 if (status < 0)
1164 return status;
1165
1166 rfkill_set_sw_state(tp_rfk->rfkill,
1167 (status == TPACPI_RFK_RADIO_OFF));
1168
1169 return status;
1170}
1171
1172/* Query FW and update rfkill sw state for all rfkill switches */
1173static void tpacpi_rfk_update_swstate_all(void)
1174{
1175 unsigned int i;
1176
1177 for (i = 0; i < TPACPI_RFK_SW_MAX; i++)
1178 tpacpi_rfk_update_swstate(tpacpi_rfkill_switches[i]);
1179}
1180
1181/*
1182 * Sync the HW-blocking state of all rfkill switches,
1183 * do notice it causes the rfkill core to schedule uevents
1184 */
1185static void tpacpi_rfk_update_hwblock_state(bool blocked)
1186{
1187 unsigned int i;
1188 struct tpacpi_rfk *tp_rfk;
1189
1190 for (i = 0; i < TPACPI_RFK_SW_MAX; i++) {
1191 tp_rfk = tpacpi_rfkill_switches[i];
1192 if (tp_rfk) {
1193 if (rfkill_set_hw_state(tp_rfk->rfkill,
1194 blocked)) {
1195 /* ignore -- we track sw block */
1196 }
1197 }
1198 }
1199}
1200
1201/* Call to get the WLSW state from the firmware */
1202static int hotkey_get_wlsw(void);
1203
1204/* Call to query WLSW state and update all rfkill switches */
1205static bool tpacpi_rfk_check_hwblock_state(void)
1206{
1207 int res = hotkey_get_wlsw();
1208 int hw_blocked;
1209
1210 /* When unknown or unsupported, we have to assume it is unblocked */
1211 if (res < 0)
1212 return false;
1213
1214 hw_blocked = (res == TPACPI_RFK_RADIO_OFF);
1215 tpacpi_rfk_update_hwblock_state(hw_blocked);
1216
1217 return hw_blocked;
1218}
1219
1220static int tpacpi_rfk_hook_set_block(void *data, bool blocked)
1221{
1222 struct tpacpi_rfk *tp_rfk = data;
1223 int res;
1224
1225 dbg_printk(TPACPI_DBG_RFKILL,
1226 "request to change radio state to %s\n",
1227 blocked ? "blocked" : "unblocked");
1228
1229 /* try to set radio state */
1230 res = (tp_rfk->ops->set_status)(blocked ?
1231 TPACPI_RFK_RADIO_OFF : TPACPI_RFK_RADIO_ON);
1232
1233 /* and update the rfkill core with whatever the FW really did */
1234 tpacpi_rfk_update_swstate(tp_rfk);
1235
1236 return (res < 0) ? res : 0;
1237}
1238
1239static const struct rfkill_ops tpacpi_rfk_rfkill_ops = {
1240 .set_block = tpacpi_rfk_hook_set_block,
1241};
1242
1243static int __init tpacpi_new_rfkill(const enum tpacpi_rfk_id id,
1244 const struct tpacpi_rfk_ops *tp_rfkops,
0e74dc26
HMH		 1245 const enum rfkill_type rfktype,
1246 const char *name,
19d337df 1247 const bool set_default)
0e74dc26 1248{
19d337df 1249 struct tpacpi_rfk *atp_rfk;
0e74dc26 1250 int res;
06d5caf4 1251 bool sw_state = false;
5451a923 1252 bool hw_state;
06d5caf4 1253 int sw_status;
90d9d3c7 1254
19d337df
JB		 1255 BUG_ON(id >= TPACPI_RFK_SW_MAX || tpacpi_rfkill_switches[id]);
1256
19d337df
JB		 1257 atp_rfk = kzalloc(sizeof(struct tpacpi_rfk), GFP_KERNEL);
1258 if (atp_rfk)
1259 atp_rfk->rfkill = rfkill_alloc(name,
1260 &tpacpi_pdev->dev,
1261 rfktype,
1262 &tpacpi_rfk_rfkill_ops,
1263 atp_rfk);
1264 if (!atp_rfk || !atp_rfk->rfkill) {
0978e012 1265 pr_err("failed to allocate memory for rfkill class\n");
19d337df 1266 kfree(atp_rfk);
0e74dc26
HMH		 1267 return -ENOMEM;
1268 }
1269
19d337df
JB		 1270 atp_rfk->id = id;
1271 atp_rfk->ops = tp_rfkops;
0e74dc26 1272
06d5caf4
AJ		 1273 sw_status = (tp_rfkops->get_status)();
1274 if (sw_status < 0) {
0978e012
JP		 1275 pr_err("failed to read initial state for %s, error %d\n",
1276 name, sw_status);
b3fa1329 1277 } else {
06d5caf4 1278 sw_state = (sw_status == TPACPI_RFK_RADIO_OFF);
b3fa1329
AJ		 1279 if (set_default) {
1280 /* try to keep the initial state, since we ask the
1281 * firmware to preserve it across S5 in NVRAM */
06d5caf4 1282 rfkill_init_sw_state(atp_rfk->rfkill, sw_state);
b3fa1329
AJ		 1283 }
1284 }
5451a923
HMH		 1285 hw_state = tpacpi_rfk_check_hwblock_state();
1286 rfkill_set_hw_state(atp_rfk->rfkill, hw_state);
19d337df
JB		 1287
1288 res = rfkill_register(atp_rfk->rfkill);
0e74dc26 1289 if (res < 0) {
0978e012 1290 pr_err("failed to register %s rfkill switch: %d\n", name, res);
19d337df
JB		 1291 rfkill_destroy(atp_rfk->rfkill);
1292 kfree(atp_rfk);
0e74dc26
HMH		 1293 return res;
1294 }
1295
19d337df 1296 tpacpi_rfkill_switches[id] = atp_rfk;
5451a923 1297
0978e012 1298 pr_info("rfkill switch %s: radio is %sblocked\n",
5451a923 1299 name, (sw_state || hw_state) ? "" : "un");
0e74dc26
HMH		 1300 return 0;
1301}
1302
19d337df 1303static void tpacpi_destroy_rfkill(const enum tpacpi_rfk_id id)
73a94d86 1304{
19d337df
JB		 1305 struct tpacpi_rfk *tp_rfk;
1306
1307 BUG_ON(id >= TPACPI_RFK_SW_MAX);
1308
1309 tp_rfk = tpacpi_rfkill_switches[id];
1310 if (tp_rfk) {
1311 rfkill_unregister(tp_rfk->rfkill);
5f0dadb4 1312 rfkill_destroy(tp_rfk->rfkill);
19d337df
JB		 1313 tpacpi_rfkill_switches[id] = NULL;
1314 kfree(tp_rfk);
1315 }
73a94d86
HMH		 1316}
1317
1318static void printk_deprecated_rfkill_attribute(const char * const what)
1319{
1320 printk_deprecated_attribute(what,
1321 "Please switch to generic rfkill before year 2010");
1322}
1323
19d337df
JB		 1324/* sysfs <radio> enable ------------------------------------------------ */
1325static ssize_t tpacpi_rfk_sysfs_enable_show(const enum tpacpi_rfk_id id,
1326 struct device_attribute *attr,
1327 char *buf)
1328{
1329 int status;
1330
1331 printk_deprecated_rfkill_attribute(attr->attr.name);
1332
1333 /* This is in the ABI... */
1334 if (tpacpi_rfk_check_hwblock_state()) {
1335 status = TPACPI_RFK_RADIO_OFF;
1336 } else {
1337 status = tpacpi_rfk_update_swstate(tpacpi_rfkill_switches[id]);
1338 if (status < 0)
1339 return status;
1340 }
1341
1342 return snprintf(buf, PAGE_SIZE, "%d\n",
1343 (status == TPACPI_RFK_RADIO_ON) ? 1 : 0);
1344}
1345
1346static ssize_t tpacpi_rfk_sysfs_enable_store(const enum tpacpi_rfk_id id,
1347 struct device_attribute *attr,
1348 const char *buf, size_t count)
1349{
1350 unsigned long t;
1351 int res;
1352
1353 printk_deprecated_rfkill_attribute(attr->attr.name);
1354
1355 if (parse_strtoul(buf, 1, &t))
1356 return -EINVAL;
1357
1358 tpacpi_disclose_usertask(attr->attr.name, "set to %ld\n", t);
1359
1360 /* This is in the ABI... */
1361 if (tpacpi_rfk_check_hwblock_state() && !!t)
1362 return -EPERM;
1363
1364 res = tpacpi_rfkill_switches[id]->ops->set_status((!!t) ?
1365 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF);
1366 tpacpi_rfk_update_swstate(tpacpi_rfkill_switches[id]);
1367
1368 return (res < 0) ? res : count;
1369}
1370
1371/* procfs -------------------------------------------------------------- */
887965e6 1372static int tpacpi_rfk_procfs_read(const enum tpacpi_rfk_id id, struct seq_file *m)
19d337df 1373{
19d337df 1374 if (id >= TPACPI_RFK_SW_MAX)
887965e6 1375 seq_printf(m, "status:\t\tnot supported\n");
19d337df
JB		 1376 else {
1377 int status;
1378
1379 /* This is in the ABI... */
1380 if (tpacpi_rfk_check_hwblock_state()) {
1381 status = TPACPI_RFK_RADIO_OFF;
1382 } else {
1383 status = tpacpi_rfk_update_swstate(
1384 tpacpi_rfkill_switches[id]);
1385 if (status < 0)
1386 return status;
1387 }
1388
887965e6 1389 seq_printf(m, "status:\t\t%s\n",
19d337df
JB		 1390 (status == TPACPI_RFK_RADIO_ON) ?
1391 "enabled" : "disabled");
887965e6 1392 seq_printf(m, "commands:\tenable, disable\n");
19d337df
JB		 1393 }
1394
887965e6 1395 return 0;
19d337df
JB		 1396}
1397
1398static int tpacpi_rfk_procfs_write(const enum tpacpi_rfk_id id, char *buf)
1399{
1400 char *cmd;
1401 int status = -1;
1402 int res = 0;
1403
1404 if (id >= TPACPI_RFK_SW_MAX)
1405 return -ENODEV;
1406
1407 while ((cmd = next_cmd(&buf))) {
1408 if (strlencmp(cmd, "enable") == 0)
1409 status = TPACPI_RFK_RADIO_ON;
1410 else if (strlencmp(cmd, "disable") == 0)
1411 status = TPACPI_RFK_RADIO_OFF;
1412 else
1413 return -EINVAL;
1414 }
1415
1416 if (status != -1) {
1417 tpacpi_disclose_usertask("procfs", "attempt to %s %s\n",
1418 (status == TPACPI_RFK_RADIO_ON) ?
1419 "enable" : "disable",
1420 tpacpi_rfkill_names[id]);
1421 res = (tpacpi_rfkill_switches[id]->ops->set_status)(status);
1422 tpacpi_rfk_update_swstate(tpacpi_rfkill_switches[id]);
1423 }
1424
1425 return res;
1426}
1427
56b6aeb0 1428/*************************************************************************
b21a15f6 1429 * thinkpad-acpi driver attributes
56b6aeb0
HMH		 1430 */
1431
b21a15f6
HMH		 1432/* interface_version --------------------------------------------------- */
1433static ssize_t tpacpi_driver_interface_version_show(
1434 struct device_driver *drv,
1435 char *buf)
1da177e4 1436{
b21a15f6
HMH		 1437 return snprintf(buf, PAGE_SIZE, "0x%08x\n", TPACPI_SYSFS_VERSION);
1438}
1439
1440static DRIVER_ATTR(interface_version, S_IRUGO,
1441 tpacpi_driver_interface_version_show, NULL);
1442
1443/* debug_level --------------------------------------------------------- */
1444static ssize_t tpacpi_driver_debug_show(struct device_driver *drv,
1445 char *buf)
1446{
1447 return snprintf(buf, PAGE_SIZE, "0x%04x\n", dbg_level);
1448}
1449
1450static ssize_t tpacpi_driver_debug_store(struct device_driver *drv,
1451 const char *buf, size_t count)
1452{
1453 unsigned long t;
1454
1455 if (parse_strtoul(buf, 0xffff, &t))
1456 return -EINVAL;
1457
1458 dbg_level = t;
1459
1460 return count;
1461}
1462
1463static DRIVER_ATTR(debug_level, S_IWUSR | S_IRUGO,
1464 tpacpi_driver_debug_show, tpacpi_driver_debug_store);
1465
1466/* version ------------------------------------------------------------- */
1467static ssize_t tpacpi_driver_version_show(struct device_driver *drv,
1468 char *buf)
1469{
35ff8b9f
HMH		 1470 return snprintf(buf, PAGE_SIZE, "%s v%s\n",
1471 TPACPI_DESC, TPACPI_VERSION);
b21a15f6
HMH		 1472}
1473
1474static DRIVER_ATTR(version, S_IRUGO,
1475 tpacpi_driver_version_show, NULL);
1476
1477/* --------------------------------------------------------------------- */
1478
a73f3091
HMH		 1479#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
1480
a73f3091
HMH		 1481/* wlsw_emulstate ------------------------------------------------------ */
1482static ssize_t tpacpi_driver_wlsw_emulstate_show(struct device_driver *drv,
1483 char *buf)
1484{
1485 return snprintf(buf, PAGE_SIZE, "%d\n", !!tpacpi_wlsw_emulstate);
1486}
1487
1488static ssize_t tpacpi_driver_wlsw_emulstate_store(struct device_driver *drv,
1489 const char *buf, size_t count)
1490{
1491 unsigned long t;
1492
1493 if (parse_strtoul(buf, 1, &t))
1494 return -EINVAL;
1495
19d337df 1496 if (tpacpi_wlsw_emulstate != !!t) {
a73f3091 1497 tpacpi_wlsw_emulstate = !!t;
19d337df
JB		 1498 tpacpi_rfk_update_hwblock_state(!t); /* negative logic */
1499 }
a73f3091
HMH		 1500
1501 return count;
1502}
1503
1504static DRIVER_ATTR(wlsw_emulstate, S_IWUSR | S_IRUGO,
1505 tpacpi_driver_wlsw_emulstate_show,
1506 tpacpi_driver_wlsw_emulstate_store);
1507
1508/* bluetooth_emulstate ------------------------------------------------- */
1509static ssize_t tpacpi_driver_bluetooth_emulstate_show(
1510 struct device_driver *drv,
1511 char *buf)
1512{
1513 return snprintf(buf, PAGE_SIZE, "%d\n", !!tpacpi_bluetooth_emulstate);
1514}
1515
1516static ssize_t tpacpi_driver_bluetooth_emulstate_store(
1517 struct device_driver *drv,
1518 const char *buf, size_t count)
1519{
1520 unsigned long t;
1521
1522 if (parse_strtoul(buf, 1, &t))
1523 return -EINVAL;
1524
1525 tpacpi_bluetooth_emulstate = !!t;
1526
1527 return count;
1528}
1529
1530static DRIVER_ATTR(bluetooth_emulstate, S_IWUSR | S_IRUGO,
1531 tpacpi_driver_bluetooth_emulstate_show,
1532 tpacpi_driver_bluetooth_emulstate_store);
1533
1534/* wwan_emulstate ------------------------------------------------- */
1535static ssize_t tpacpi_driver_wwan_emulstate_show(
1536 struct device_driver *drv,
1537 char *buf)
1538{
1539 return snprintf(buf, PAGE_SIZE, "%d\n", !!tpacpi_wwan_emulstate);
1540}
1541
1542static ssize_t tpacpi_driver_wwan_emulstate_store(
1543 struct device_driver *drv,
1544 const char *buf, size_t count)
1545{
1546 unsigned long t;
1547
1548 if (parse_strtoul(buf, 1, &t))
1549 return -EINVAL;
1550
1551 tpacpi_wwan_emulstate = !!t;
1552
1553 return count;
1554}
1555
1556static DRIVER_ATTR(wwan_emulstate, S_IWUSR | S_IRUGO,
1557 tpacpi_driver_wwan_emulstate_show,
1558 tpacpi_driver_wwan_emulstate_store);
1559
0045c0aa
HMH		 1560/* uwb_emulstate ------------------------------------------------- */
1561static ssize_t tpacpi_driver_uwb_emulstate_show(
1562 struct device_driver *drv,
1563 char *buf)
1564{
1565 return snprintf(buf, PAGE_SIZE, "%d\n", !!tpacpi_uwb_emulstate);
1566}
1567
1568static ssize_t tpacpi_driver_uwb_emulstate_store(
1569 struct device_driver *drv,
1570 const char *buf, size_t count)
1571{
1572 unsigned long t;
1573
1574 if (parse_strtoul(buf, 1, &t))
1575 return -EINVAL;
1576
1577 tpacpi_uwb_emulstate = !!t;
1578
1579 return count;
1580}
1581
1582static DRIVER_ATTR(uwb_emulstate, S_IWUSR | S_IRUGO,
1583 tpacpi_driver_uwb_emulstate_show,
1584 tpacpi_driver_uwb_emulstate_store);
a73f3091
HMH		 1585#endif
1586
1587/* --------------------------------------------------------------------- */
1588
35ff8b9f 1589static struct driver_attribute *tpacpi_driver_attributes[] = {
b21a15f6
HMH		 1590 &driver_attr_debug_level, &driver_attr_version,
1591 &driver_attr_interface_version,
1592};
1593
1594static int __init tpacpi_create_driver_attributes(struct device_driver *drv)
1595{
1596 int i, res;
1597
1598 i = 0;
1599 res = 0;
1600 while (!res && i < ARRAY_SIZE(tpacpi_driver_attributes)) {
1601 res = driver_create_file(drv, tpacpi_driver_attributes[i]);
1602 i++;
1603 }
1604
a73f3091
HMH		 1605#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
1606 if (!res && dbg_wlswemul)
1607 res = driver_create_file(drv, &driver_attr_wlsw_emulstate);
1608 if (!res && dbg_bluetoothemul)
1609 res = driver_create_file(drv, &driver_attr_bluetooth_emulstate);
1610 if (!res && dbg_wwanemul)
1611 res = driver_create_file(drv, &driver_attr_wwan_emulstate);
0045c0aa
HMH		 1612 if (!res && dbg_uwbemul)
1613 res = driver_create_file(drv, &driver_attr_uwb_emulstate);
a73f3091
HMH		 1614#endif
1615
b21a15f6
HMH		 1616 return res;
1617}
1618
1619static void tpacpi_remove_driver_attributes(struct device_driver *drv)
1620{
1621 int i;
1622
35ff8b9f 1623 for (i = 0; i < ARRAY_SIZE(tpacpi_driver_attributes); i++)
b21a15f6 1624 driver_remove_file(drv, tpacpi_driver_attributes[i]);
a73f3091
HMH		 1625
1626#ifdef THINKPAD_ACPI_DEBUGFACILITIES
1627 driver_remove_file(drv, &driver_attr_wlsw_emulstate);
1628 driver_remove_file(drv, &driver_attr_bluetooth_emulstate);
1629 driver_remove_file(drv, &driver_attr_wwan_emulstate);
0045c0aa 1630 driver_remove_file(drv, &driver_attr_uwb_emulstate);
a73f3091 1631#endif
b21a15f6
HMH		 1632}
1633
600a99fa
HMH		 1634/*************************************************************************
1635 * Firmware Data
1636 */
1637
1638/*
1639 * Table of recommended minimum BIOS versions
1640 *
1641 * Reasons for listing:
9ddc5b6f 1642 * 1. Stable BIOS, listed because the unknown amount of
600a99fa
HMH		 1643 * bugs and bad ACPI behaviour on older versions
1644 *
1645 * 2. BIOS or EC fw with known bugs that trigger on Linux
1646 *
1647 * 3. BIOS with known reduced functionality in older versions
1648 *
1649 * We recommend the latest BIOS and EC version.
1650 * We only support the latest BIOS and EC fw version as a rule.
1651 *
1652 * Sources: IBM ThinkPad Public Web Documents (update changelogs),
1653 * Information from users in ThinkWiki
e675abaf
HMH		 1654 *
1655 * WARNING: we use this table also to detect that the machine is
1656 * a ThinkPad in some cases, so don't remove entries lightly.
600a99fa
HMH		 1657 */
1658
1659#define TPV_Q(__v, __id1, __id2, __bv1, __bv2) \
1660 { .vendor = (__v), \
1661 .bios = TPID(__id1, __id2), \
1662 .ec = TPACPI_MATCH_ANY, \
1663 .quirks = TPACPI_MATCH_ANY << 16 \
1664 | (__bv1) << 8 | (__bv2) }
1665
1666#define TPV_Q_X(__v, __bid1, __bid2, __bv1, __bv2, \
275014ae 1667 __eid, __ev1, __ev2) \
600a99fa
HMH		 1668 { .vendor = (__v), \
1669 .bios = TPID(__bid1, __bid2), \
275014ae 1670 .ec = __eid, \
600a99fa
HMH		 1671 .quirks = (__ev1) << 24 | (__ev2) << 16 \
1672 | (__bv1) << 8 | (__bv2) }
1673
1674#define TPV_QI0(__id1, __id2, __bv1, __bv2) \
1675 TPV_Q(PCI_VENDOR_ID_IBM, __id1, __id2, __bv1, __bv2)
1676
275014ae 1677/* Outdated IBM BIOSes often lack the EC id string */
600a99fa
HMH		 1678#define TPV_QI1(__id1, __id2, __bv1, __bv2, __ev1, __ev2) \
1679 TPV_Q_X(PCI_VENDOR_ID_IBM, __id1, __id2, \
275014ae
HMH		 1680 __bv1, __bv2, TPID(__id1, __id2), \
1681 __ev1, __ev2), \
1682 TPV_Q_X(PCI_VENDOR_ID_IBM, __id1, __id2, \
1683 __bv1, __bv2, TPACPI_MATCH_UNKNOWN, \
1684 __ev1, __ev2)
600a99fa 1685
275014ae 1686/* Outdated IBM BIOSes often lack the EC id string */
600a99fa
HMH		 1687#define TPV_QI2(__bid1, __bid2, __bv1, __bv2, \
1688 __eid1, __eid2, __ev1, __ev2) \
1689 TPV_Q_X(PCI_VENDOR_ID_IBM, __bid1, __bid2, \
275014ae
HMH		 1690 __bv1, __bv2, TPID(__eid1, __eid2), \
1691 __ev1, __ev2), \
1692 TPV_Q_X(PCI_VENDOR_ID_IBM, __bid1, __bid2, \
1693 __bv1, __bv2, TPACPI_MATCH_UNKNOWN, \
1694 __ev1, __ev2)
600a99fa
HMH		 1695
1696#define TPV_QL0(__id1, __id2, __bv1, __bv2) \
1697 TPV_Q(PCI_VENDOR_ID_LENOVO, __id1, __id2, __bv1, __bv2)
1698
1699#define TPV_QL1(__id1, __id2, __bv1, __bv2, __ev1, __ev2) \
1700 TPV_Q_X(PCI_VENDOR_ID_LENOVO, __id1, __id2, \
275014ae
HMH		 1701 __bv1, __bv2, TPID(__id1, __id2), \
1702 __ev1, __ev2)
600a99fa
HMH		 1703
1704#define TPV_QL2(__bid1, __bid2, __bv1, __bv2, \
1705 __eid1, __eid2, __ev1, __ev2) \
1706 TPV_Q_X(PCI_VENDOR_ID_LENOVO, __bid1, __bid2, \
275014ae
HMH		 1707 __bv1, __bv2, TPID(__eid1, __eid2), \
1708 __ev1, __ev2)
600a99fa
HMH		 1709
1710static const struct tpacpi_quirk tpacpi_bios_version_qtable[] __initconst = {
1711 /* Numeric models ------------------ */
1712 /* FW MODEL BIOS VERS */
1713 TPV_QI0('I', 'M', '6', '5'), /* 570 */
1714 TPV_QI0('I', 'U', '2', '6'), /* 570E */
1715 TPV_QI0('I', 'B', '5', '4'), /* 600 */
1716 TPV_QI0('I', 'H', '4', '7'), /* 600E */
1717 TPV_QI0('I', 'N', '3', '6'), /* 600E */
1718 TPV_QI0('I', 'T', '5', '5'), /* 600X */
1719 TPV_QI0('I', 'D', '4', '8'), /* 770, 770E, 770ED */
1720 TPV_QI0('I', 'I', '4', '2'), /* 770X */
1721 TPV_QI0('I', 'O', '2', '3'), /* 770Z */
1722
1723 /* A-series ------------------------- */
1724 /* FW MODEL BIOS VERS EC VERS */
1725 TPV_QI0('I', 'W', '5', '9'), /* A20m */
1726 TPV_QI0('I', 'V', '6', '9'), /* A20p */
1727 TPV_QI0('1', '0', '2', '6'), /* A21e, A22e */
1728 TPV_QI0('K', 'U', '3', '6'), /* A21e */
1729 TPV_QI0('K', 'X', '3', '6'), /* A21m, A22m */
1730 TPV_QI0('K', 'Y', '3', '8'), /* A21p, A22p */
1731 TPV_QI0('1', 'B', '1', '7'), /* A22e */
1732 TPV_QI0('1', '3', '2', '0'), /* A22m */
1733 TPV_QI0('1', 'E', '7', '3'), /* A30/p (0) */
1734 TPV_QI1('1', 'G', '4', '1', '1', '7'), /* A31/p (0) */
1735 TPV_QI1('1', 'N', '1', '6', '0', '7'), /* A31/p (0) */
1736
1737 /* G-series ------------------------- */
1738 /* FW MODEL BIOS VERS */
1739 TPV_QI0('1', 'T', 'A', '6'), /* G40 */
1740 TPV_QI0('1', 'X', '5', '7'), /* G41 */
1741
1742 /* R-series, T-series --------------- */
1743 /* FW MODEL BIOS VERS EC VERS */
1744 TPV_QI0('1', 'C', 'F', '0'), /* R30 */
1745 TPV_QI0('1', 'F', 'F', '1'), /* R31 */
1746 TPV_QI0('1', 'M', '9', '7'), /* R32 */
1747 TPV_QI0('1', 'O', '6', '1'), /* R40 */
1748 TPV_QI0('1', 'P', '6', '5'), /* R40 */
1749 TPV_QI0('1', 'S', '7', '0'), /* R40e */
1750 TPV_QI1('1', 'R', 'D', 'R', '7', '1'), /* R50/p, R51,
1751 T40/p, T41/p, T42/p (1) */
1752 TPV_QI1('1', 'V', '7', '1', '2', '8'), /* R50e, R51 (1) */
1753 TPV_QI1('7', '8', '7', '1', '0', '6'), /* R51e (1) */
1754 TPV_QI1('7', '6', '6', '9', '1', '6'), /* R52 (1) */
1755 TPV_QI1('7', '0', '6', '9', '2', '8'), /* R52, T43 (1) */
1756
1757 TPV_QI0('I', 'Y', '6', '1'), /* T20 */
1758 TPV_QI0('K', 'Z', '3', '4'), /* T21 */
1759 TPV_QI0('1', '6', '3', '2'), /* T22 */
1760 TPV_QI1('1', 'A', '6', '4', '2', '3'), /* T23 (0) */
1761 TPV_QI1('1', 'I', '7', '1', '2', '0'), /* T30 (0) */
1762 TPV_QI1('1', 'Y', '6', '5', '2', '9'), /* T43/p (1) */
1763
1764 TPV_QL1('7', '9', 'E', '3', '5', '0'), /* T60/p */
1765 TPV_QL1('7', 'C', 'D', '2', '2', '2'), /* R60, R60i */
90765c6a 1766 TPV_QL1('7', 'E', 'D', '0', '1', '5'), /* R60e, R60i */
600a99fa
HMH		 1767
1768 /* BIOS FW BIOS VERS EC FW EC VERS */
1769 TPV_QI2('1', 'W', '9', '0', '1', 'V', '2', '8'), /* R50e (1) */
1770 TPV_QL2('7', 'I', '3', '4', '7', '9', '5', '0'), /* T60/p wide */
1771
1772 /* X-series ------------------------- */
1773 /* FW MODEL BIOS VERS EC VERS */
1774 TPV_QI0('I', 'Z', '9', 'D'), /* X20, X21 */
1775 TPV_QI0('1', 'D', '7', '0'), /* X22, X23, X24 */
1776 TPV_QI1('1', 'K', '4', '8', '1', '8'), /* X30 (0) */
1777 TPV_QI1('1', 'Q', '9', '7', '2', '3'), /* X31, X32 (0) */
1778 TPV_QI1('1', 'U', 'D', '3', 'B', '2'), /* X40 (0) */
1779 TPV_QI1('7', '4', '6', '4', '2', '7'), /* X41 (0) */
1780 TPV_QI1('7', '5', '6', '0', '2', '0'), /* X41t (0) */
1781
90765c6a
HMH		 1782 TPV_QL1('7', 'B', 'D', '7', '4', '0'), /* X60/s */
1783 TPV_QL1('7', 'J', '3', '0', '1', '3'), /* X60t */
600a99fa
HMH		 1784
1785 /* (0) - older versions lack DMI EC fw string and functionality */
1786 /* (1) - older versions known to lack functionality */
1787};
1788
1789#undef TPV_QL1
1790#undef TPV_QL0
1791#undef TPV_QI2
1792#undef TPV_QI1
1793#undef TPV_QI0
1794#undef TPV_Q_X
1795#undef TPV_Q
1796
1797static void __init tpacpi_check_outdated_fw(void)
1798{
1799 unsigned long fwvers;
1800 u16 ec_version, bios_version;
1801
1802 fwvers = tpacpi_check_quirks(tpacpi_bios_version_qtable,
1803 ARRAY_SIZE(tpacpi_bios_version_qtable));
1804
1805 if (!fwvers)
1806 return;
1807
1808 bios_version = fwvers & 0xffffU;
1809 ec_version = (fwvers >> 16) & 0xffffU;
1810
1811 /* note that unknown versions are set to 0x0000 and we use that */
1812 if ((bios_version > thinkpad_id.bios_release) ||
1813 (ec_version > thinkpad_id.ec_release &&
1814 ec_version != TPACPI_MATCH_ANY)) {
1815 /*
1816 * The changelogs would let us track down the exact
1817 * reason, but it is just too much of a pain to track
1818 * it. We only list BIOSes that are either really
1819 * broken, or really stable to begin with, so it is
1820 * best if the user upgrades the firmware anyway.
1821 */
0978e012
JP		 1822 pr_warn("WARNING: Outdated ThinkPad BIOS/EC firmware\n");
1823 pr_warn("WARNING: This firmware may be missing critical bug "
600a99fa
HMH		 1824 "fixes and/or important features\n");
1825 }
1826}
1827
e675abaf
HMH		 1828static bool __init tpacpi_is_fw_known(void)
1829{
1830 return tpacpi_check_quirks(tpacpi_bios_version_qtable,
1831 ARRAY_SIZE(tpacpi_bios_version_qtable)) != 0;
1832}
1833
b21a15f6
HMH		 1834/****************************************************************************
1835 ****************************************************************************
1836 *
1837 * Subdrivers
1838 *
1839 ****************************************************************************
1840 ****************************************************************************/
1841
1842/*************************************************************************
7a43f788 1843 * thinkpad-acpi metadata subdriver
b21a15f6
HMH		 1844 */
1845
887965e6 1846static int thinkpad_acpi_driver_read(struct seq_file *m)
1da177e4 1847{
887965e6
AD		 1848 seq_printf(m, "driver:\t\t%s\n", TPACPI_DESC);
1849 seq_printf(m, "version:\t%s\n", TPACPI_VERSION);
1850 return 0;
1da177e4
LT		 1851}
1852
a5763f22
HMH		 1853static struct ibm_struct thinkpad_acpi_driver_data = {
1854 .name = "driver",
1855 .read = thinkpad_acpi_driver_read,
1856};
1857
56b6aeb0
HMH		 1858/*************************************************************************
1859 * Hotkey subdriver
1860 */
1861
0d922e3b
HMH		 1862/*
1863 * ThinkPad firmware event model
1864 *
1865 * The ThinkPad firmware has two main event interfaces: normal ACPI
1866 * notifications (which follow the ACPI standard), and a private event
1867 * interface.
1868 *
1869 * The private event interface also issues events for the hotkeys. As
1870 * the driver gained features, the event handling code ended up being
1871 * built around the hotkey subdriver. This will need to be refactored
1872 * to a more formal event API eventually.
1873 *
1874 * Some "hotkeys" are actually supposed to be used as event reports,
1875 * such as "brightness has changed", "volume has changed", depending on
1876 * the ThinkPad model and how the firmware is operating.
1877 *
1878 * Unlike other classes, hotkey-class events have mask/unmask control on
1879 * non-ancient firmware. However, how it behaves changes a lot with the
1880 * firmware model and version.
1881 */
1882
f74a27d4
HMH		 1883enum { /* hot key scan codes (derived from ACPI DSDT) */
1884 TP_ACPI_HOTKEYSCAN_FNF1 = 0,
1885 TP_ACPI_HOTKEYSCAN_FNF2,
1886 TP_ACPI_HOTKEYSCAN_FNF3,
1887 TP_ACPI_HOTKEYSCAN_FNF4,
1888 TP_ACPI_HOTKEYSCAN_FNF5,
1889 TP_ACPI_HOTKEYSCAN_FNF6,
1890 TP_ACPI_HOTKEYSCAN_FNF7,
1891 TP_ACPI_HOTKEYSCAN_FNF8,
1892 TP_ACPI_HOTKEYSCAN_FNF9,
1893 TP_ACPI_HOTKEYSCAN_FNF10,
1894 TP_ACPI_HOTKEYSCAN_FNF11,
1895 TP_ACPI_HOTKEYSCAN_FNF12,
1896 TP_ACPI_HOTKEYSCAN_FNBACKSPACE,
1897 TP_ACPI_HOTKEYSCAN_FNINSERT,
1898 TP_ACPI_HOTKEYSCAN_FNDELETE,
1899 TP_ACPI_HOTKEYSCAN_FNHOME,
1900 TP_ACPI_HOTKEYSCAN_FNEND,
1901 TP_ACPI_HOTKEYSCAN_FNPAGEUP,
1902 TP_ACPI_HOTKEYSCAN_FNPAGEDOWN,
1903 TP_ACPI_HOTKEYSCAN_FNSPACE,
1904 TP_ACPI_HOTKEYSCAN_VOLUMEUP,
1905 TP_ACPI_HOTKEYSCAN_VOLUMEDOWN,
1906 TP_ACPI_HOTKEYSCAN_MUTE,
1907 TP_ACPI_HOTKEYSCAN_THINKPAD,
34a656d2
HMH		 1908 TP_ACPI_HOTKEYSCAN_UNK1,
1909 TP_ACPI_HOTKEYSCAN_UNK2,
1910 TP_ACPI_HOTKEYSCAN_UNK3,
1911 TP_ACPI_HOTKEYSCAN_UNK4,
1912 TP_ACPI_HOTKEYSCAN_UNK5,
1913 TP_ACPI_HOTKEYSCAN_UNK6,
1914 TP_ACPI_HOTKEYSCAN_UNK7,
1915 TP_ACPI_HOTKEYSCAN_UNK8,
1916
6a68d855
BN		 1917 TP_ACPI_HOTKEYSCAN_MUTE2,
1918 TP_ACPI_HOTKEYSCAN_BRIGHTNESS_ZERO,
1919 TP_ACPI_HOTKEYSCAN_CLIPPING_TOOL,
1920 TP_ACPI_HOTKEYSCAN_CLOUD,
1921 TP_ACPI_HOTKEYSCAN_UNK9,
1922 TP_ACPI_HOTKEYSCAN_VOICE,
1923 TP_ACPI_HOTKEYSCAN_UNK10,
1924 TP_ACPI_HOTKEYSCAN_GESTURES,
1925 TP_ACPI_HOTKEYSCAN_UNK11,
1926 TP_ACPI_HOTKEYSCAN_UNK12,
1927 TP_ACPI_HOTKEYSCAN_UNK13,
1928 TP_ACPI_HOTKEYSCAN_CONFIG,
1929 TP_ACPI_HOTKEYSCAN_NEW_TAB,
1930 TP_ACPI_HOTKEYSCAN_RELOAD,
1931 TP_ACPI_HOTKEYSCAN_BACK,
1932 TP_ACPI_HOTKEYSCAN_MIC_DOWN,
1933 TP_ACPI_HOTKEYSCAN_MIC_UP,
1934 TP_ACPI_HOTKEYSCAN_MIC_CANCELLATION,
1935 TP_ACPI_HOTKEYSCAN_CAMERA_MODE,
1936 TP_ACPI_HOTKEYSCAN_ROTATE_DISPLAY,
1937
34a656d2
HMH		 1938 /* Hotkey keymap size */
1939 TPACPI_HOTKEY_MAP_LEN
f74a27d4
HMH		 1940};
1941
0d922e3b 1942enum { /* Keys/events available through NVRAM polling */
01e88f25
HMH		 1943 TPACPI_HKEY_NVRAM_KNOWN_MASK = 0x00fb88c0U,
1944 TPACPI_HKEY_NVRAM_GOOD_MASK = 0x00fb8000U,
1945};
1946
1947enum { /* Positions of some of the keys in hotkey masks */
1948 TP_ACPI_HKEY_DISPSWTCH_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNF7,
1949 TP_ACPI_HKEY_DISPXPAND_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNF8,
1950 TP_ACPI_HKEY_HIBERNATE_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNF12,
1951 TP_ACPI_HKEY_BRGHTUP_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNHOME,
1952 TP_ACPI_HKEY_BRGHTDWN_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNEND,
1953 TP_ACPI_HKEY_THNKLGHT_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNPAGEUP,
1954 TP_ACPI_HKEY_ZOOM_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNSPACE,
1955 TP_ACPI_HKEY_VOLUP_MASK = 1 << TP_ACPI_HOTKEYSCAN_VOLUMEUP,
1956 TP_ACPI_HKEY_VOLDWN_MASK = 1 << TP_ACPI_HOTKEYSCAN_VOLUMEDOWN,
1957 TP_ACPI_HKEY_MUTE_MASK = 1 << TP_ACPI_HOTKEYSCAN_MUTE,
1958 TP_ACPI_HKEY_THINKPAD_MASK = 1 << TP_ACPI_HOTKEYSCAN_THINKPAD,
1959};
1960
1961enum { /* NVRAM to ACPI HKEY group map */
1962 TP_NVRAM_HKEY_GROUP_HK2 = TP_ACPI_HKEY_THINKPAD_MASK |
1963 TP_ACPI_HKEY_ZOOM_MASK |
1964 TP_ACPI_HKEY_DISPSWTCH_MASK |
1965 TP_ACPI_HKEY_HIBERNATE_MASK,
1966 TP_NVRAM_HKEY_GROUP_BRIGHTNESS = TP_ACPI_HKEY_BRGHTUP_MASK |
1967 TP_ACPI_HKEY_BRGHTDWN_MASK,
1968 TP_NVRAM_HKEY_GROUP_VOLUME = TP_ACPI_HKEY_VOLUP_MASK |
1969 TP_ACPI_HKEY_VOLDWN_MASK |
1970 TP_ACPI_HKEY_MUTE_MASK,
1971};
1972
1973#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
1974struct tp_nvram_state {
1975 u16 thinkpad_toggle:1;
1976 u16 zoom_toggle:1;
1977 u16 display_toggle:1;
1978 u16 thinklight_toggle:1;
1979 u16 hibernate_toggle:1;
1980 u16 displayexp_toggle:1;
1981 u16 display_state:1;
1982 u16 brightness_toggle:1;
1983 u16 volume_toggle:1;
1984 u16 mute:1;
1985
1986 u8 brightness_level;
1987 u8 volume_level;
1988};
1989
db25f16d 1990/* kthread for the hotkey poller */
01e88f25 1991static struct task_struct *tpacpi_hotkey_task;
db25f16d 1992
db25f16d 1993/*
0d922e3b
HMH		 1994 * Acquire mutex to write poller control variables as an
1995 * atomic block.
1996 *
1997 * Increment hotkey_config_change when changing them if you
1998 * want the kthread to forget old state.
db25f16d
HMH		 1999 *
2000 * See HOTKEY_CONFIG_CRITICAL_START/HOTKEY_CONFIG_CRITICAL_END
2001 */
01e88f25
HMH		 2002static struct mutex hotkey_thread_data_mutex;
2003static unsigned int hotkey_config_change;
2004
db25f16d
HMH		 2005/*
2006 * hotkey poller control variables
2007 *
2008 * Must be atomic or readers will also need to acquire mutex
0d922e3b
HMH		 2009 *
2010 * HOTKEY_CONFIG_CRITICAL_START/HOTKEY_CONFIG_CRITICAL_END
2011 * should be used only when the changes need to be taken as
2012 * a block, OR when one needs to force the kthread to forget
2013 * old state.
db25f16d
HMH		 2014 */
2015static u32 hotkey_source_mask; /* bit mask 0=ACPI,1=NVRAM */
2016static unsigned int hotkey_poll_freq = 10; /* Hz */
2017
2018#define HOTKEY_CONFIG_CRITICAL_START \
2019 do { \
2020 mutex_lock(&hotkey_thread_data_mutex); \
2021 hotkey_config_change++; \
2022 } while (0);
2023#define HOTKEY_CONFIG_CRITICAL_END \
2024 mutex_unlock(&hotkey_thread_data_mutex);
2025
01e88f25
HMH		 2026#else /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
2027
2028#define hotkey_source_mask 0U
db25f16d
HMH		 2029#define HOTKEY_CONFIG_CRITICAL_START
2030#define HOTKEY_CONFIG_CRITICAL_END
01e88f25
HMH		 2031
2032#endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
2033
f74a27d4
HMH		 2034static struct mutex hotkey_mutex;
2035
a713b4d7
HMH		 2036static enum { /* Reasons for waking up */
2037 TP_ACPI_WAKEUP_NONE = 0, /* None or unknown */
2038 TP_ACPI_WAKEUP_BAYEJ, /* Bay ejection request */
2039 TP_ACPI_WAKEUP_UNDOCK, /* Undock request */
2040} hotkey_wakeup_reason;
2041
2042static int hotkey_autosleep_ack;
2043
0d922e3b
HMH		 2044static u32 hotkey_orig_mask; /* events the BIOS had enabled */
2045static u32 hotkey_all_mask; /* all events supported in fw */
2046static u32 hotkey_reserved_mask; /* events better left disabled */
2047static u32 hotkey_driver_mask; /* events needed by the driver */
2048static u32 hotkey_user_mask; /* events visible to userspace */
2049static u32 hotkey_acpi_mask; /* events enabled in firmware */
6a38abbf 2050
edf0e0e5 2051static u16 *hotkey_keycode_map;
78f81cc4 2052
94954cc6 2053static struct attribute_set *hotkey_dev_attributes;
a0416420 2054
8b468c0c
HMH		 2055static void tpacpi_driver_event(const unsigned int hkey_event);
2056static void hotkey_driver_event(const unsigned int scancode);
7f0cf712 2057static void hotkey_poll_setup(const bool may_warn);
8b468c0c 2058
6c231bd5
HMH		 2059/* HKEY.MHKG() return bits */
2060#define TP_HOTKEY_TABLET_MASK (1 << 3)
2061
19d337df 2062static int hotkey_get_wlsw(void)
74941a69 2063{
19d337df
JB		 2064 int status;
2065
2066 if (!tp_features.hotkey_wlsw)
2067 return -ENODEV;
2068
a73f3091 2069#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
19d337df
JB		 2070 if (dbg_wlswemul)
2071 return (tpacpi_wlsw_emulstate) ?
2072 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF;
a73f3091 2073#endif
19d337df
JB		 2074
2075 if (!acpi_evalf(hkey_handle, &status, "WLSW", "d"))
74941a69 2076 return -EIO;
19d337df
JB		 2077
2078 return (status) ? TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF;
74941a69
HMH		 2079}
2080
6c231bd5
HMH		 2081static int hotkey_get_tablet_mode(int *status)
2082{
2083 int s;
2084
2085 if (!acpi_evalf(hkey_handle, &s, "MHKG", "d"))
2086 return -EIO;
2087
cee47f5a
HMH		 2088 *status = ((s & TP_HOTKEY_TABLET_MASK) != 0);
2089 return 0;
6c231bd5
HMH		 2090}
2091
b2c985e7 2092/*
0d922e3b
HMH		 2093 * Reads current event mask from firmware, and updates
2094 * hotkey_acpi_mask accordingly. Also resets any bits
2095 * from hotkey_user_mask that are unavailable to be
2096 * delivered (shadow requirement of the userspace ABI).
2097 *
b2c985e7
HMH		 2098 * Call with hotkey_mutex held
2099 */
2100static int hotkey_mask_get(void)
2101{
2102 if (tp_features.hotkey_mask) {
0d922e3b
HMH		 2103 u32 m = 0;
2104
01e88f25 2105 if (!acpi_evalf(hkey_handle, &m, "DHKN", "d"))
b2c985e7 2106 return -EIO;
0d922e3b
HMH		 2107
2108 hotkey_acpi_mask = m;
2109 } else {
2110 /* no mask support doesn't mean no event support... */
2111 hotkey_acpi_mask = hotkey_all_mask;
b2c985e7 2112 }
0d922e3b
HMH		 2113
2114 /* sync userspace-visible mask */
2115 hotkey_user_mask &= (hotkey_acpi_mask | hotkey_source_mask);
b2c985e7
HMH		 2116
2117 return 0;
2118}
2119
df6dd1b3 2120static void hotkey_mask_warn_incomplete_mask(void)
0d922e3b
HMH		 2121{
2122 /* log only what the user can fix... */
2123 const u32 wantedmask = hotkey_driver_mask &
2124 ~(hotkey_acpi_mask | hotkey_source_mask) &
2125 (hotkey_all_mask | TPACPI_HKEY_NVRAM_KNOWN_MASK);
2126
2127 if (wantedmask)
0978e012 2128 pr_notice("required events 0x%08x not enabled!\n", wantedmask);
0d922e3b
HMH		 2129}
2130
b2c985e7 2131/*
0d922e3b
HMH		 2132 * Set the firmware mask when supported
2133 *
2134 * Also calls hotkey_mask_get to update hotkey_acpi_mask.
2135 *
2136 * NOTE: does not set bits in hotkey_user_mask, but may reset them.
2137 *
b2c985e7
HMH		 2138 * Call with hotkey_mutex held
2139 */
2140static int hotkey_mask_set(u32 mask)
2141{
2142 int i;
2143 int rc = 0;
2144
0d922e3b 2145 const u32 fwmask = mask & ~hotkey_source_mask;
92889022 2146
0d922e3b 2147 if (tp_features.hotkey_mask) {
b2c985e7 2148 for (i = 0; i < 32; i++) {
b2c985e7
HMH		 2149 if (!acpi_evalf(hkey_handle,
2150 NULL, "MHKM", "vdd", i + 1,
0d922e3b 2151 !!(mask & (1 << i)))) {
b2c985e7
HMH		 2152 rc = -EIO;
2153 break;
b2c985e7
HMH		 2154 }
2155 }
0d922e3b 2156 }
b2c985e7 2157
0d922e3b
HMH		 2158 /*
2159 * We *must* make an inconditional call to hotkey_mask_get to
2160 * refresh hotkey_acpi_mask and update hotkey_user_mask
2161 *
2162 * Take the opportunity to also log when we cannot _enable_
2163 * a given event.
2164 */
2165 if (!hotkey_mask_get() && !rc && (fwmask & ~hotkey_acpi_mask)) {
0978e012
JP		 2166 pr_notice("asked for hotkey mask 0x%08x, but "
2167 "firmware forced it to 0x%08x\n",
2168 fwmask, hotkey_acpi_mask);
b2c985e7
HMH		 2169 }
2170
6b30eb7d
HMH		 2171 if (tpacpi_lifecycle != TPACPI_LIFE_EXITING)
2172 hotkey_mask_warn_incomplete_mask();
0d922e3b
HMH		 2173
2174 return rc;
2175}
2176
2177/*
2178 * Sets hotkey_user_mask and tries to set the firmware mask
2179 *
2180 * Call with hotkey_mutex held
2181 */
2182static int hotkey_user_mask_set(const u32 mask)
2183{
2184 int rc;
2185
2186 /* Give people a chance to notice they are doing something that
2187 * is bound to go boom on their users sooner or later */
2188 if (!tp_warned.hotkey_mask_ff &&
2189 (mask == 0xffff || mask == 0xffffff ||
2190 mask == 0xffffffff)) {
2191 tp_warned.hotkey_mask_ff = 1;
0978e012
JP		 2192 pr_notice("setting the hotkey mask to 0x%08x is likely "
2193 "not the best way to go about it\n", mask);
2194 pr_notice("please consider using the driver defaults, "
2195 "and refer to up-to-date thinkpad-acpi "
2196 "documentation\n");
0d922e3b
HMH		 2197 }
2198
2199 /* Try to enable what the user asked for, plus whatever we need.
2200 * this syncs everything but won't enable bits in hotkey_user_mask */
2201 rc = hotkey_mask_set((mask | hotkey_driver_mask) & ~hotkey_source_mask);
2202
2203 /* Enable the available bits in hotkey_user_mask */
2204 hotkey_user_mask = mask & (hotkey_acpi_mask | hotkey_source_mask);
2205
b2c985e7
HMH		 2206 return rc;
2207}
2208
8b468c0c
HMH		 2209/*
2210 * Sets the driver hotkey mask.
2211 *
2212 * Can be called even if the hotkey subdriver is inactive
2213 */
2214static int tpacpi_hotkey_driver_mask_set(const u32 mask)
2215{
2216 int rc;
2217
2218 /* Do the right thing if hotkey_init has not been called yet */
2219 if (!tp_features.hotkey) {
2220 hotkey_driver_mask = mask;
2221 return 0;
2222 }
2223
2224 mutex_lock(&hotkey_mutex);
2225
2226 HOTKEY_CONFIG_CRITICAL_START
2227 hotkey_driver_mask = mask;
b684a363 2228#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
8b468c0c 2229 hotkey_source_mask |= (mask & ~hotkey_all_mask);
b684a363 2230#endif
8b468c0c
HMH		 2231 HOTKEY_CONFIG_CRITICAL_END
2232
2233 rc = hotkey_mask_set((hotkey_acpi_mask | hotkey_driver_mask) &
2234 ~hotkey_source_mask);
7f0cf712
HMH		 2235 hotkey_poll_setup(true);
2236
8b468c0c
HMH		 2237 mutex_unlock(&hotkey_mutex);
2238
2239 return rc;
2240}
2241
b2c985e7
HMH		 2242static int hotkey_status_get(int *status)
2243{
2244 if (!acpi_evalf(hkey_handle, status, "DHKC", "d"))
2245 return -EIO;
2246
2247 return 0;
2248}
2249
2586d566 2250static int hotkey_status_set(bool enable)
b2c985e7 2251{
2586d566 2252 if (!acpi_evalf(hkey_handle, NULL, "MHKC", "vd", enable ? 1 : 0))
b2c985e7
HMH		 2253 return -EIO;
2254
2255 return 0;
2256}
2257
6c231bd5 2258static void tpacpi_input_send_tabletsw(void)
b3ec6f91 2259{
6c231bd5 2260 int state;
b3ec6f91 2261
6c231bd5
HMH		 2262 if (tp_features.hotkey_tablet &&
2263 !hotkey_get_tablet_mode(&state)) {
2264 mutex_lock(&tpacpi_inputdev_send_mutex);
b3ec6f91 2265
6c231bd5
HMH		 2266 input_report_switch(tpacpi_inputdev,
2267 SW_TABLET_MODE, !!state);
2268 input_sync(tpacpi_inputdev);
2269
2270 mutex_unlock(&tpacpi_inputdev_send_mutex);
2271 }
b3ec6f91
HMH		 2272}
2273
0d922e3b
HMH		 2274/* Do NOT call without validating scancode first */
2275static void tpacpi_input_send_key(const unsigned int scancode)
b7c8c200 2276{
0d922e3b 2277 const unsigned int keycode = hotkey_keycode_map[scancode];
b7c8c200
HMH		 2278
2279 if (keycode != KEY_RESERVED) {
2280 mutex_lock(&tpacpi_inputdev_send_mutex);
2281
5ffba7e6 2282 input_event(tpacpi_inputdev, EV_MSC, MSC_SCAN, scancode);
b7c8c200 2283 input_report_key(tpacpi_inputdev, keycode, 1);
b7c8c200
HMH		 2284 input_sync(tpacpi_inputdev);
2285
5ffba7e6 2286 input_event(tpacpi_inputdev, EV_MSC, MSC_SCAN, scancode);
b7c8c200 2287 input_report_key(tpacpi_inputdev, keycode, 0);
b7c8c200
HMH		 2288 input_sync(tpacpi_inputdev);
2289
2290 mutex_unlock(&tpacpi_inputdev_send_mutex);
2291 }
2292}
2293
0d922e3b
HMH		 2294/* Do NOT call without validating scancode first */
2295static void tpacpi_input_send_key_masked(const unsigned int scancode)
2296{
8b468c0c 2297 hotkey_driver_event(scancode);
0d922e3b
HMH		 2298 if (hotkey_user_mask & (1 << scancode))
2299 tpacpi_input_send_key(scancode);
2300}
2301
01e88f25
HMH		 2302#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
2303static struct tp_acpi_drv_struct ibm_hotkey_acpidriver;
2304
0d922e3b 2305/* Do NOT call without validating scancode first */
01e88f25
HMH		 2306static void tpacpi_hotkey_send_key(unsigned int scancode)
2307{
0d922e3b 2308 tpacpi_input_send_key_masked(scancode);
01e88f25
HMH		 2309}
2310
0d922e3b 2311static void hotkey_read_nvram(struct tp_nvram_state *n, const u32 m)
01e88f25
HMH		 2312{
2313 u8 d;
2314
2315 if (m & TP_NVRAM_HKEY_GROUP_HK2) {
2316 d = nvram_read_byte(TP_NVRAM_ADDR_HK2);
2317 n->thinkpad_toggle = !!(d & TP_NVRAM_MASK_HKT_THINKPAD);
2318 n->zoom_toggle = !!(d & TP_NVRAM_MASK_HKT_ZOOM);
2319 n->display_toggle = !!(d & TP_NVRAM_MASK_HKT_DISPLAY);
2320 n->hibernate_toggle = !!(d & TP_NVRAM_MASK_HKT_HIBERNATE);
2321 }
2322 if (m & TP_ACPI_HKEY_THNKLGHT_MASK) {
2323 d = nvram_read_byte(TP_NVRAM_ADDR_THINKLIGHT);
2324 n->thinklight_toggle = !!(d & TP_NVRAM_MASK_THINKLIGHT);
2325 }
2326 if (m & TP_ACPI_HKEY_DISPXPAND_MASK) {
2327 d = nvram_read_byte(TP_NVRAM_ADDR_VIDEO);
2328 n->displayexp_toggle =
2329 !!(d & TP_NVRAM_MASK_HKT_DISPEXPND);
2330 }
2331 if (m & TP_NVRAM_HKEY_GROUP_BRIGHTNESS) {
2332 d = nvram_read_byte(TP_NVRAM_ADDR_BRIGHTNESS);
2333 n->brightness_level = (d & TP_NVRAM_MASK_LEVEL_BRIGHTNESS)
2334 >> TP_NVRAM_POS_LEVEL_BRIGHTNESS;
2335 n->brightness_toggle =
2336 !!(d & TP_NVRAM_MASK_HKT_BRIGHTNESS);
2337 }
2338 if (m & TP_NVRAM_HKEY_GROUP_VOLUME) {
2339 d = nvram_read_byte(TP_NVRAM_ADDR_MIXER);
2340 n->volume_level = (d & TP_NVRAM_MASK_LEVEL_VOLUME)
2341 >> TP_NVRAM_POS_LEVEL_VOLUME;
2342 n->mute = !!(d & TP_NVRAM_MASK_MUTE);
2343 n->volume_toggle = !!(d & TP_NVRAM_MASK_HKT_VOLUME);
2344 }
2345}
2346
2347#define TPACPI_COMPARE_KEY(__scancode, __member) \
a4d44ba1
BW		 2348do { \
2349 if ((event_mask & (1 << __scancode)) && \
2350 oldn->__member != newn->__member) \
2351 tpacpi_hotkey_send_key(__scancode); \
2352} while (0)
01e88f25
HMH		 2353
2354#define TPACPI_MAY_SEND_KEY(__scancode) \
a4d44ba1
BW		 2355do { \
2356 if (event_mask & (1 << __scancode)) \
2357 tpacpi_hotkey_send_key(__scancode); \
2358} while (0)
2359
2360static void issue_volchange(const unsigned int oldvol,
2361 const unsigned int newvol,
2362 const u32 event_mask)
2363{
2364 unsigned int i = oldvol;
2365
2366 while (i > newvol) {
2367 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEDOWN);
2368 i--;
5d756db9 2369 }
a4d44ba1
BW		 2370 while (i < newvol) {
2371 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEUP);
2372 i++;
2373 }
2374}
5d756db9 2375
a4d44ba1
BW		 2376static void issue_brightnesschange(const unsigned int oldbrt,
2377 const unsigned int newbrt,
2378 const u32 event_mask)
2379{
2380 unsigned int i = oldbrt;
28999022 2381
a4d44ba1
BW		 2382 while (i > newbrt) {
2383 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNEND);
2384 i--;
28999022 2385 }
a4d44ba1
BW		 2386 while (i < newbrt) {
2387 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNHOME);
2388 i++;
2389 }
2390}
2391
2392static void hotkey_compare_and_issue_event(struct tp_nvram_state *oldn,
2393 struct tp_nvram_state *newn,
2394 const u32 event_mask)
2395{
28999022 2396
01e88f25
HMH		 2397 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_THINKPAD, thinkpad_toggle);
2398 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNSPACE, zoom_toggle);
2399 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNF7, display_toggle);
2400 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNF12, hibernate_toggle);
2401
2402 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNPAGEUP, thinklight_toggle);
2403
2404 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNF8, displayexp_toggle);
2405
5d756db9
HMH		 2406 /*
2407 * Handle volume
2408 *
2409 * This code is supposed to duplicate the IBM firmware behaviour:
2410 * - Pressing MUTE issues mute hotkey message, even when already mute
2411 * - Pressing Volume up/down issues volume up/down hotkey messages,
c8440336 2412 * even when already at maximum or minimum volume
5d756db9
HMH		 2413 * - The act of unmuting issues volume up/down notification,
2414 * depending which key was used to unmute
2415 *
2416 * We are constrained to what the NVRAM can tell us, which is not much
2417 * and certainly not enough if more than one volume hotkey was pressed
2418 * since the last poll cycle.
2419 *
2420 * Just to make our life interesting, some newer Lenovo ThinkPads have
2421 * bugs in the BIOS and may fail to update volume_toggle properly.
2422 */
2423 if (newn->mute) {
2424 /* muted */
2425 if (!oldn->mute ||
2426 oldn->volume_toggle != newn->volume_toggle ||
2427 oldn->volume_level != newn->volume_level) {
2428 /* recently muted, or repeated mute keypress, or
2429 * multiple presses ending in mute */
a4d44ba1
BW		 2430 issue_volchange(oldn->volume_level, newn->volume_level,
2431 event_mask);
01e88f25
HMH		 2432 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_MUTE);
2433 }
5d756db9
HMH		 2434 } else {
2435 /* unmute */
2436 if (oldn->mute) {
2437 /* recently unmuted, issue 'unmute' keypress */
01e88f25 2438 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEUP);
5d756db9
HMH		 2439 }
2440 if (oldn->volume_level != newn->volume_level) {
a4d44ba1
BW		 2441 issue_volchange(oldn->volume_level, newn->volume_level,
2442 event_mask);
5d756db9
HMH		 2443 } else if (oldn->volume_toggle != newn->volume_toggle) {
2444 /* repeated vol up/down keypress at end of scale ? */
2445 if (newn->volume_level == 0)
01e88f25 2446 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEDOWN);
5d756db9
HMH		 2447 else if (newn->volume_level >= TP_NVRAM_LEVEL_VOLUME_MAX)
2448 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEUP);
01e88f25
HMH		 2449 }
2450 }
2451
2452 /* handle brightness */
28999022
HMH		 2453 if (oldn->brightness_level != newn->brightness_level) {
2454 issue_brightnesschange(oldn->brightness_level,
a4d44ba1 2455 newn->brightness_level, event_mask);
28999022
HMH		 2456 } else if (oldn->brightness_toggle != newn->brightness_toggle) {
2457 /* repeated key presses that didn't change state */
2458 if (newn->brightness_level == 0)
01e88f25 2459 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNEND);
28999022
HMH		 2460 else if (newn->brightness_level >= bright_maxlvl
2461 && !tp_features.bright_unkfw)
2462 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNHOME);
01e88f25 2463 }
01e88f25
HMH		 2464
2465#undef TPACPI_COMPARE_KEY
2466#undef TPACPI_MAY_SEND_KEY
0d922e3b 2467}
01e88f25 2468
0d922e3b
HMH		 2469/*
2470 * Polling driver
2471 *
2472 * We track all events in hotkey_source_mask all the time, since
2473 * most of them are edge-based. We only issue those requested by
2474 * hotkey_user_mask or hotkey_driver_mask, though.
2475 */
01e88f25
HMH		 2476static int hotkey_kthread(void *data)
2477{
2478 struct tp_nvram_state s[2];
0d922e3b 2479 u32 poll_mask, event_mask;
01e88f25
HMH		 2480 unsigned int si, so;
2481 unsigned long t;
8a32c441 2482 unsigned int change_detector;
db25f16d 2483 unsigned int poll_freq;
8a32c441 2484 bool was_frozen;
01e88f25 2485
01e88f25
HMH		 2486 if (tpacpi_lifecycle == TPACPI_LIFE_EXITING)
2487 goto exit;
2488
2489 set_freezable();
2490
2491 so = 0;
2492 si = 1;
2493 t = 0;
2494
2495 /* Initial state for compares */
2496 mutex_lock(&hotkey_thread_data_mutex);
2497 change_detector = hotkey_config_change;
0d922e3b
HMH		 2498 poll_mask = hotkey_source_mask;
2499 event_mask = hotkey_source_mask &
2500 (hotkey_driver_mask | hotkey_user_mask);
db25f16d 2501 poll_freq = hotkey_poll_freq;
01e88f25 2502 mutex_unlock(&hotkey_thread_data_mutex);
0d922e3b 2503 hotkey_read_nvram(&s[so], poll_mask);
01e88f25 2504
db25f16d
HMH		 2505 while (!kthread_should_stop()) {
2506 if (t == 0) {
2507 if (likely(poll_freq))
2508 t = 1000/poll_freq;
2509 else
2510 t = 100; /* should never happen... */
2511 }
01e88f25 2512 t = msleep_interruptible(t);
8a32c441 2513 if (unlikely(kthread_freezable_should_stop(&was_frozen)))
01e88f25 2514 break;
8a32c441
TH		 2515
2516 if (t > 0 && !was_frozen)
01e88f25
HMH		 2517 continue;
2518
2519 mutex_lock(&hotkey_thread_data_mutex);
8a32c441 2520 if (was_frozen || hotkey_config_change != change_detector) {
01e88f25
HMH		 2521 /* forget old state on thaw or config change */
2522 si = so;
2523 t = 0;
2524 change_detector = hotkey_config_change;
2525 }
0d922e3b
HMH		 2526 poll_mask = hotkey_source_mask;
2527 event_mask = hotkey_source_mask &
2528 (hotkey_driver_mask | hotkey_user_mask);
db25f16d 2529 poll_freq = hotkey_poll_freq;
01e88f25
HMH		 2530 mutex_unlock(&hotkey_thread_data_mutex);
2531
0d922e3b
HMH		 2532 if (likely(poll_mask)) {
2533 hotkey_read_nvram(&s[si], poll_mask);
01e88f25
HMH		 2534 if (likely(si != so)) {
2535 hotkey_compare_and_issue_event(&s[so], &s[si],
0d922e3b 2536 event_mask);
01e88f25
HMH		 2537 }
2538 }
2539
2540 so = si;
2541 si ^= 1;
2542 }
2543
2544exit:
01e88f25
HMH		 2545 return 0;
2546}
2547
db25f16d 2548/* call with hotkey_mutex held */
01e88f25
HMH		 2549static void hotkey_poll_stop_sync(void)
2550{
2551 if (tpacpi_hotkey_task) {
01e88f25
HMH		 2552 kthread_stop(tpacpi_hotkey_task);
2553 tpacpi_hotkey_task = NULL;
01e88f25
HMH		 2554 }
2555}
2556
2557/* call with hotkey_mutex held */
7f0cf712 2558static void hotkey_poll_setup(const bool may_warn)
01e88f25 2559{
0d922e3b
HMH		 2560 const u32 poll_driver_mask = hotkey_driver_mask & hotkey_source_mask;
2561 const u32 poll_user_mask = hotkey_user_mask & hotkey_source_mask;
db25f16d 2562
0d922e3b
HMH		 2563 if (hotkey_poll_freq > 0 &&
2564 (poll_driver_mask ||
2565 (poll_user_mask && tpacpi_inputdev->users > 0))) {
01e88f25
HMH		 2566 if (!tpacpi_hotkey_task) {
2567 tpacpi_hotkey_task = kthread_run(hotkey_kthread,
95e57ab2 2568 NULL, TPACPI_NVRAM_KTHREAD_NAME);
01e88f25
HMH		 2569 if (IS_ERR(tpacpi_hotkey_task)) {
2570 tpacpi_hotkey_task = NULL;
0978e012 2571 pr_err("could not create kernel thread "
01e88f25
HMH		 2572 "for hotkey polling\n");
2573 }
2574 }
2575 } else {
2576 hotkey_poll_stop_sync();
0d922e3b 2577 if (may_warn && (poll_driver_mask || poll_user_mask) &&
db25f16d 2578 hotkey_poll_freq == 0) {
0978e012
JP		 2579 pr_notice("hot keys 0x%08x and/or events 0x%08x "
2580 "require polling, which is currently "
2581 "disabled\n",
2582 poll_user_mask, poll_driver_mask);
01e88f25
HMH		 2583 }
2584 }
2585}
2586
7f0cf712 2587static void hotkey_poll_setup_safe(const bool may_warn)
01e88f25
HMH		 2588{
2589 mutex_lock(&hotkey_mutex);
2590 hotkey_poll_setup(may_warn);
2591 mutex_unlock(&hotkey_mutex);
2592}
2593
db25f16d
HMH		 2594/* call with hotkey_mutex held */
2595static void hotkey_poll_set_freq(unsigned int freq)
2596{
2597 if (!freq)
2598 hotkey_poll_stop_sync();
2599
db25f16d 2600 hotkey_poll_freq = freq;
db25f16d
HMH		 2601}
2602
1bc6b9cd
HMH		 2603#else /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
2604
7f0cf712
HMH		 2605static void hotkey_poll_setup(const bool __unused)
2606{
2607}
2608
2609static void hotkey_poll_setup_safe(const bool __unused)
1bc6b9cd
HMH		 2610{
2611}
2612
2613#endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
2614
01e88f25
HMH		 2615static int hotkey_inputdev_open(struct input_dev *dev)
2616{
2617 switch (tpacpi_lifecycle) {
2618 case TPACPI_LIFE_INIT:
01e88f25 2619 case TPACPI_LIFE_RUNNING:
db25f16d 2620 hotkey_poll_setup_safe(false);
01e88f25 2621 return 0;
b589ea4c
HMH		 2622 case TPACPI_LIFE_EXITING:
2623 return -EBUSY;
01e88f25
HMH		 2624 }
2625
2626 /* Should only happen if tpacpi_lifecycle is corrupt */
2627 BUG();
2628 return -EBUSY;
2629}
2630
2631static void hotkey_inputdev_close(struct input_dev *dev)
2632{
2633 /* disable hotkey polling when possible */
b589ea4c 2634 if (tpacpi_lifecycle != TPACPI_LIFE_EXITING &&
0d922e3b 2635 !(hotkey_source_mask & hotkey_driver_mask))
db25f16d 2636 hotkey_poll_setup_safe(false);
01e88f25 2637}
01e88f25 2638
a0416420
HMH		 2639/* sysfs hotkey enable ------------------------------------------------- */
2640static ssize_t hotkey_enable_show(struct device *dev,
2641 struct device_attribute *attr,
2642 char *buf)
2643{
ae92bd17 2644 int res, status;
a0416420 2645
2586d566
HMH		 2646 printk_deprecated_attribute("hotkey_enable",
2647 "Hotkey reporting is always enabled");
2648
b2c985e7 2649 res = hotkey_status_get(&status);
a0416420
HMH		 2650 if (res)
2651 return res;
2652
2653 return snprintf(buf, PAGE_SIZE, "%d\n", status);
2654}
2655
2656static ssize_t hotkey_enable_store(struct device *dev,
2657 struct device_attribute *attr,
2658 const char *buf, size_t count)
2659{
2660 unsigned long t;
2586d566
HMH		 2661
2662 printk_deprecated_attribute("hotkey_enable",
2663 "Hotkeys can be disabled through hotkey_mask");
a0416420
HMH		 2664
2665 if (parse_strtoul(buf, 1, &t))
2666 return -EINVAL;
2667
2586d566
HMH		 2668 if (t == 0)
2669 return -EPERM;
a0416420 2670
2586d566 2671 return count;
a0416420
HMH		 2672}
2673
b4dd04ac 2674static DEVICE_ATTR_RW(hotkey_enable);
a0416420
HMH		 2675
2676/* sysfs hotkey mask --------------------------------------------------- */
2677static ssize_t hotkey_mask_show(struct device *dev,
2678 struct device_attribute *attr,
2679 char *buf)
2680{
0d922e3b 2681 return snprintf(buf, PAGE_SIZE, "0x%08x\n", hotkey_user_mask);
a0416420
HMH		 2682}
2683
2684static ssize_t hotkey_mask_store(struct device *dev,
2685 struct device_attribute *attr,
2686 const char *buf, size_t count)
2687{
2688 unsigned long t;
b2c985e7 2689 int res;
a0416420 2690
ae92bd17 2691 if (parse_strtoul(buf, 0xffffffffUL, &t))
a0416420
HMH		 2692 return -EINVAL;
2693
7646ea88 2694 if (mutex_lock_killable(&hotkey_mutex))
b2c985e7
HMH		 2695 return -ERESTARTSYS;
2696
0d922e3b 2697 res = hotkey_user_mask_set(t);
01e88f25
HMH		 2698
2699#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
db25f16d 2700 hotkey_poll_setup(true);
01e88f25
HMH		 2701#endif
2702
b2c985e7 2703 mutex_unlock(&hotkey_mutex);
a0416420 2704
56e2c200
HMH		 2705 tpacpi_disclose_usertask("hotkey_mask", "set to 0x%08lx\n", t);
2706
a0416420
HMH		 2707 return (res) ? res : count;
2708}
2709
b4dd04ac 2710static DEVICE_ATTR_RW(hotkey_mask);
a0416420
HMH		 2711
2712/* sysfs hotkey bios_enabled ------------------------------------------- */
2713static ssize_t hotkey_bios_enabled_show(struct device *dev,
2714 struct device_attribute *attr,
2715 char *buf)
2716{
2586d566 2717 return sprintf(buf, "0\n");
a0416420
HMH		 2718}
2719
b4dd04ac 2720static DEVICE_ATTR_RO(hotkey_bios_enabled);
a0416420
HMH		 2721
2722/* sysfs hotkey bios_mask ---------------------------------------------- */
2723static ssize_t hotkey_bios_mask_show(struct device *dev,
2724 struct device_attribute *attr,
2725 char *buf)
2726{
06777be6
HMH		 2727 printk_deprecated_attribute("hotkey_bios_mask",
2728 "This attribute is useless.");
ae92bd17 2729 return snprintf(buf, PAGE_SIZE, "0x%08x\n", hotkey_orig_mask);
a0416420
HMH		 2730}
2731
b4dd04ac 2732static DEVICE_ATTR_RO(hotkey_bios_mask);
a0416420 2733
9b010de5
HMH		 2734/* sysfs hotkey all_mask ----------------------------------------------- */
2735static ssize_t hotkey_all_mask_show(struct device *dev,
2736 struct device_attribute *attr,
2737 char *buf)
2738{
01e88f25
HMH		 2739 return snprintf(buf, PAGE_SIZE, "0x%08x\n",
2740 hotkey_all_mask | hotkey_source_mask);
9b010de5
HMH		 2741}
2742
b4dd04ac 2743static DEVICE_ATTR_RO(hotkey_all_mask);
9b010de5
HMH		 2744
2745/* sysfs hotkey recommended_mask --------------------------------------- */
2746static ssize_t hotkey_recommended_mask_show(struct device *dev,
2747 struct device_attribute *attr,
2748 char *buf)
2749{
2750 return snprintf(buf, PAGE_SIZE, "0x%08x\n",
01e88f25
HMH		 2751 (hotkey_all_mask | hotkey_source_mask)
2752 & ~hotkey_reserved_mask);
9b010de5
HMH		 2753}
2754
b4dd04ac 2755static DEVICE_ATTR_RO(hotkey_recommended_mask);
9b010de5 2756
01e88f25
HMH		 2757#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
2758
2759/* sysfs hotkey hotkey_source_mask ------------------------------------- */
2760static ssize_t hotkey_source_mask_show(struct device *dev,
2761 struct device_attribute *attr,
2762 char *buf)
2763{
2764 return snprintf(buf, PAGE_SIZE, "0x%08x\n", hotkey_source_mask);
2765}
2766
2767static ssize_t hotkey_source_mask_store(struct device *dev,
2768 struct device_attribute *attr,
2769 const char *buf, size_t count)
2770{
2771 unsigned long t;
0d922e3b
HMH		 2772 u32 r_ev;
2773 int rc;
01e88f25
HMH		 2774
2775 if (parse_strtoul(buf, 0xffffffffUL, &t) ||
2776 ((t & ~TPACPI_HKEY_NVRAM_KNOWN_MASK) != 0))
2777 return -EINVAL;
2778
7646ea88 2779 if (mutex_lock_killable(&hotkey_mutex))
01e88f25
HMH		 2780 return -ERESTARTSYS;
2781
2782 HOTKEY_CONFIG_CRITICAL_START
2783 hotkey_source_mask = t;
2784 HOTKEY_CONFIG_CRITICAL_END
2785
0d922e3b
HMH		 2786 rc = hotkey_mask_set((hotkey_user_mask | hotkey_driver_mask) &
2787 ~hotkey_source_mask);
db25f16d 2788 hotkey_poll_setup(true);
0d922e3b
HMH		 2789
2790 /* check if events needed by the driver got disabled */
2791 r_ev = hotkey_driver_mask & ~(hotkey_acpi_mask & hotkey_all_mask)
2792 & ~hotkey_source_mask & TPACPI_HKEY_NVRAM_KNOWN_MASK;
01e88f25
HMH		 2793
2794 mutex_unlock(&hotkey_mutex);
2795
0d922e3b 2796 if (rc < 0)
0978e012
JP		 2797 pr_err("hotkey_source_mask: "
2798 "failed to update the firmware event mask!\n");
0d922e3b
HMH		 2799
2800 if (r_ev)
0978e012
JP		 2801 pr_notice("hotkey_source_mask: "
2802 "some important events were disabled: 0x%04x\n",
2803 r_ev);
0d922e3b 2804
56e2c200
HMH		 2805 tpacpi_disclose_usertask("hotkey_source_mask", "set to 0x%08lx\n", t);
2806
0d922e3b 2807 return (rc < 0) ? rc : count;
01e88f25
HMH		 2808}
2809
b4dd04ac 2810static DEVICE_ATTR_RW(hotkey_source_mask);
01e88f25
HMH		 2811
2812/* sysfs hotkey hotkey_poll_freq --------------------------------------- */
2813static ssize_t hotkey_poll_freq_show(struct device *dev,
2814 struct device_attribute *attr,
2815 char *buf)
2816{
2817 return snprintf(buf, PAGE_SIZE, "%d\n", hotkey_poll_freq);
2818}
2819
2820static ssize_t hotkey_poll_freq_store(struct device *dev,
2821 struct device_attribute *attr,
2822 const char *buf, size_t count)
2823{
2824 unsigned long t;
2825
2826 if (parse_strtoul(buf, 25, &t))
2827 return -EINVAL;
2828
7646ea88 2829 if (mutex_lock_killable(&hotkey_mutex))
01e88f25
HMH		 2830 return -ERESTARTSYS;
2831
db25f16d
HMH		 2832 hotkey_poll_set_freq(t);
2833 hotkey_poll_setup(true);
01e88f25 2834
01e88f25
HMH		 2835 mutex_unlock(&hotkey_mutex);
2836
56e2c200
HMH		 2837 tpacpi_disclose_usertask("hotkey_poll_freq", "set to %lu\n", t);
2838
01e88f25
HMH		 2839 return count;
2840}
2841
b4dd04ac 2842static DEVICE_ATTR_RW(hotkey_poll_freq);
01e88f25
HMH		 2843
2844#endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
2845
50ebec09 2846/* sysfs hotkey radio_sw (pollable) ------------------------------------ */
74941a69
HMH		 2847static ssize_t hotkey_radio_sw_show(struct device *dev,
2848 struct device_attribute *attr,
2849 char *buf)
2850{
19d337df
JB		 2851 int res;
2852 res = hotkey_get_wlsw();
74941a69
HMH		 2853 if (res < 0)
2854 return res;
2855
19d337df
JB		 2856 /* Opportunistic update */
2857 tpacpi_rfk_update_hwblock_state((res == TPACPI_RFK_RADIO_OFF));
2858
2859 return snprintf(buf, PAGE_SIZE, "%d\n",
2860 (res == TPACPI_RFK_RADIO_OFF) ? 0 : 1);
74941a69
HMH		 2861}
2862
b4dd04ac 2863static DEVICE_ATTR_RO(hotkey_radio_sw);
74941a69 2864
50ebec09
HMH		 2865static void hotkey_radio_sw_notify_change(void)
2866{
2867 if (tp_features.hotkey_wlsw)
2868 sysfs_notify(&tpacpi_pdev->dev.kobj, NULL,
2869 "hotkey_radio_sw");
2870}
2871
6c231bd5
HMH		 2872/* sysfs hotkey tablet mode (pollable) --------------------------------- */
2873static ssize_t hotkey_tablet_mode_show(struct device *dev,
2874 struct device_attribute *attr,
2875 char *buf)
2876{
2877 int res, s;
2878 res = hotkey_get_tablet_mode(&s);
2879 if (res < 0)
2880 return res;
2881
2882 return snprintf(buf, PAGE_SIZE, "%d\n", !!s);
2883}
2884
b4dd04ac 2885static DEVICE_ATTR_RO(hotkey_tablet_mode);
6c231bd5
HMH		 2886
2887static void hotkey_tablet_mode_notify_change(void)
2888{
2889 if (tp_features.hotkey_tablet)
2890 sysfs_notify(&tpacpi_pdev->dev.kobj, NULL,
2891 "hotkey_tablet_mode");
2892}
2893
50ebec09 2894/* sysfs wakeup reason (pollable) -------------------------------------- */
a713b4d7
HMH		 2895static ssize_t hotkey_wakeup_reason_show(struct device *dev,
2896 struct device_attribute *attr,
2897 char *buf)
2898{
2899 return snprintf(buf, PAGE_SIZE, "%d\n", hotkey_wakeup_reason);
2900}
2901
5fb73bc2 2902static DEVICE_ATTR(wakeup_reason, S_IRUGO, hotkey_wakeup_reason_show, NULL);
a713b4d7 2903
1d5a2b54 2904static void hotkey_wakeup_reason_notify_change(void)
50ebec09 2905{
0d922e3b
HMH		 2906 sysfs_notify(&tpacpi_pdev->dev.kobj, NULL,
2907 "wakeup_reason");
50ebec09
HMH		 2908}
2909
2910/* sysfs wakeup hotunplug_complete (pollable) -------------------------- */
a713b4d7
HMH		 2911static ssize_t hotkey_wakeup_hotunplug_complete_show(struct device *dev,
2912 struct device_attribute *attr,
2913 char *buf)
2914{
2915 return snprintf(buf, PAGE_SIZE, "%d\n", hotkey_autosleep_ack);
2916}
2917
5fb73bc2
BM		 2918static DEVICE_ATTR(wakeup_hotunplug_complete, S_IRUGO,
2919 hotkey_wakeup_hotunplug_complete_show, NULL);
a713b4d7 2920
1d5a2b54 2921static void hotkey_wakeup_hotunplug_complete_notify_change(void)
50ebec09 2922{
0d922e3b
HMH		 2923 sysfs_notify(&tpacpi_pdev->dev.kobj, NULL,
2924 "wakeup_hotunplug_complete");
50ebec09
HMH		 2925}
2926
b790ceeb
BN		 2927/* sysfs adaptive kbd mode --------------------------------------------- */
2928
2929static int adaptive_keyboard_get_mode(void);
2930static int adaptive_keyboard_set_mode(int new_mode);
2931
2932enum ADAPTIVE_KEY_MODE {
2933 HOME_MODE,
2934 WEB_BROWSER_MODE,
2935 WEB_CONFERENCE_MODE,
2936 FUNCTION_MODE,
2937 LAYFLAT_MODE
2938};
2939
2940static ssize_t adaptive_kbd_mode_show(struct device *dev,
2941 struct device_attribute *attr,
2942 char *buf)
2943{
abf9dc0d 2944 int current_mode;
b790ceeb
BN		 2945
2946 current_mode = adaptive_keyboard_get_mode();
2947 if (current_mode < 0)
2948 return current_mode;
2949
2950 return snprintf(buf, PAGE_SIZE, "%d\n", current_mode);
2951}
2952
2953static ssize_t adaptive_kbd_mode_store(struct device *dev,
2954 struct device_attribute *attr,
2955 const char *buf, size_t count)
2956{
2957 unsigned long t;
2958 int res;
2959
2960 if (parse_strtoul(buf, LAYFLAT_MODE, &t))
2961 return -EINVAL;
2962
2963 res = adaptive_keyboard_set_mode(t);
2964 return (res < 0) ? res : count;
2965}
2966
2967static DEVICE_ATTR_RW(adaptive_kbd_mode);
2968
2969static struct attribute *adaptive_kbd_attributes[] = {
2970 &dev_attr_adaptive_kbd_mode.attr,
2971 NULL
2972};
2973
2974static const struct attribute_group adaptive_kbd_attr_group = {
2975 .attrs = adaptive_kbd_attributes,
2976};
2977
a0416420
HMH		 2978/* --------------------------------------------------------------------- */
2979
ff80f137
HMH		 2980static struct attribute *hotkey_attributes[] __initdata = {
2981 &dev_attr_hotkey_enable.attr,
01e88f25 2982 &dev_attr_hotkey_bios_enabled.attr,
0d922e3b 2983 &dev_attr_hotkey_bios_mask.attr,
5fb73bc2
BM		 2984 &dev_attr_wakeup_reason.attr,
2985 &dev_attr_wakeup_hotunplug_complete.attr,
01e88f25
HMH		 2986 &dev_attr_hotkey_mask.attr,
2987 &dev_attr_hotkey_all_mask.attr,
2988 &dev_attr_hotkey_recommended_mask.attr,
0d922e3b 2989#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
01e88f25
HMH		 2990 &dev_attr_hotkey_source_mask.attr,
2991 &dev_attr_hotkey_poll_freq.attr,
2992#endif
ff80f137
HMH		 2993};
2994
19d337df
JB		 2995/*
2996 * Sync both the hw and sw blocking state of all switches
2997 */
733e27c1
HMH		 2998static void tpacpi_send_radiosw_update(void)
2999{
3000 int wlsw;
3001
19d337df
JB		 3002 /*
3003 * We must sync all rfkill controllers *before* issuing any
3004 * rfkill input events, or we will race the rfkill core input
3005 * handler.
3006 *
c8440336 3007 * tpacpi_inputdev_send_mutex works as a synchronization point
19d337df
JB		 3008 * for the above.
3009 *
3010 * We optimize to avoid numerous calls to hotkey_get_wlsw.
3011 */
3012
3013 wlsw = hotkey_get_wlsw();
3014
3015 /* Sync hw blocking state first if it is hw-blocked */
3016 if (wlsw == TPACPI_RFK_RADIO_OFF)
3017 tpacpi_rfk_update_hwblock_state(true);
0e74dc26 3018
19d337df
JB		 3019 /* Sync sw blocking state */
3020 tpacpi_rfk_update_swstate_all();
3021
3022 /* Sync hw blocking state last if it is hw-unblocked */
3023 if (wlsw == TPACPI_RFK_RADIO_ON)
3024 tpacpi_rfk_update_hwblock_state(false);
3025
3026 /* Issue rfkill input event for WLSW switch */
3027 if (!(wlsw < 0)) {
733e27c1
HMH		 3028 mutex_lock(&tpacpi_inputdev_send_mutex);
3029
3030 input_report_switch(tpacpi_inputdev,
19d337df 3031 SW_RFKILL_ALL, (wlsw > 0));
733e27c1
HMH		 3032 input_sync(tpacpi_inputdev);
3033
3034 mutex_unlock(&tpacpi_inputdev_send_mutex);
3035 }
19d337df
JB		 3036
3037 /*
3038 * this can be unconditional, as we will poll state again
3039 * if userspace uses the notify to read data
3040 */
733e27c1
HMH		 3041 hotkey_radio_sw_notify_change();
3042}
3043
9c0a76e1
HMH		 3044static void hotkey_exit(void)
3045{
3046#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
db25f16d 3047 mutex_lock(&hotkey_mutex);
9c0a76e1 3048 hotkey_poll_stop_sync();
db25f16d 3049 mutex_unlock(&hotkey_mutex);
9c0a76e1
HMH		 3050#endif
3051
3052 if (hotkey_dev_attributes)
3053 delete_attr_set(hotkey_dev_attributes, &tpacpi_pdev->dev.kobj);
3054
4be73005 3055 dbg_printk(TPACPI_DBG_EXIT | TPACPI_DBG_HKEY,
0d922e3b
HMH		 3056 "restoring original HKEY status and mask\n");
3057 /* yes, there is a bitwise or below, we want the
3058 * functions to be called even if one of them fail */
3059 if (((tp_features.hotkey_mask &&
3060 hotkey_mask_set(hotkey_orig_mask)) |
3061 hotkey_status_set(false)) != 0)
0978e012 3062 pr_err("failed to restore hot key mask "
4be73005 3063 "to BIOS defaults\n");
9c0a76e1
HMH		 3064}
3065
de4c8cc7
HMH		 3066static void __init hotkey_unmap(const unsigned int scancode)
3067{
3068 if (hotkey_keycode_map[scancode] != KEY_RESERVED) {
3069 clear_bit(hotkey_keycode_map[scancode],
3070 tpacpi_inputdev->keybit);
3071 hotkey_keycode_map[scancode] = KEY_RESERVED;
3072 }
3073}
3074
0d922e3b
HMH		 3075/*
3076 * HKEY quirks:
3077 * TPACPI_HK_Q_INIMASK: Supports FN+F3,FN+F4,FN+F12
3078 */
3079
3080#define TPACPI_HK_Q_INIMASK 0x0001
3081
3082static const struct tpacpi_quirk tpacpi_hotkey_qtable[] __initconst = {
3083 TPACPI_Q_IBM('I', 'H', TPACPI_HK_Q_INIMASK), /* 600E */
3084 TPACPI_Q_IBM('I', 'N', TPACPI_HK_Q_INIMASK), /* 600E */
3085 TPACPI_Q_IBM('I', 'D', TPACPI_HK_Q_INIMASK), /* 770, 770E, 770ED */
3086 TPACPI_Q_IBM('I', 'W', TPACPI_HK_Q_INIMASK), /* A20m */
3087 TPACPI_Q_IBM('I', 'V', TPACPI_HK_Q_INIMASK), /* A20p */
3088 TPACPI_Q_IBM('1', '0', TPACPI_HK_Q_INIMASK), /* A21e, A22e */
3089 TPACPI_Q_IBM('K', 'U', TPACPI_HK_Q_INIMASK), /* A21e */
3090 TPACPI_Q_IBM('K', 'X', TPACPI_HK_Q_INIMASK), /* A21m, A22m */
3091 TPACPI_Q_IBM('K', 'Y', TPACPI_HK_Q_INIMASK), /* A21p, A22p */
3092 TPACPI_Q_IBM('1', 'B', TPACPI_HK_Q_INIMASK), /* A22e */
3093 TPACPI_Q_IBM('1', '3', TPACPI_HK_Q_INIMASK), /* A22m */
3094 TPACPI_Q_IBM('1', 'E', TPACPI_HK_Q_INIMASK), /* A30/p (0) */
3095 TPACPI_Q_IBM('1', 'C', TPACPI_HK_Q_INIMASK), /* R30 */
3096 TPACPI_Q_IBM('1', 'F', TPACPI_HK_Q_INIMASK), /* R31 */
3097 TPACPI_Q_IBM('I', 'Y', TPACPI_HK_Q_INIMASK), /* T20 */
3098 TPACPI_Q_IBM('K', 'Z', TPACPI_HK_Q_INIMASK), /* T21 */
3099 TPACPI_Q_IBM('1', '6', TPACPI_HK_Q_INIMASK), /* T22 */
3100 TPACPI_Q_IBM('I', 'Z', TPACPI_HK_Q_INIMASK), /* X20, X21 */
3101 TPACPI_Q_IBM('1', 'D', TPACPI_HK_Q_INIMASK), /* X22, X23, X24 */
3102};
3103
fc6e7568
HMH		 3104typedef u16 tpacpi_keymap_entry_t;
3105typedef tpacpi_keymap_entry_t tpacpi_keymap_t[TPACPI_HOTKEY_MAP_LEN];
d1e14dca 3106
a5763f22 3107static int __init hotkey_init(struct ibm_init_struct *iibm)
56b6aeb0 3108{
0f089147
HMH		 3109 /* Requirements for changing the default keymaps:
3110 *
3111 * 1. Many of the keys are mapped to KEY_RESERVED for very
3112 * good reasons. Do not change them unless you have deep
3113 * knowledge on the IBM and Lenovo ThinkPad firmware for
3114 * the various ThinkPad models. The driver behaves
3115 * differently for KEY_RESERVED: such keys have their
3116 * hot key mask *unset* in mask_recommended, and also
3117 * in the initial hot key mask programmed into the
3118 * firmware at driver load time, which means the firm-
3119 * ware may react very differently if you change them to
3120 * something else;
3121 *
3122 * 2. You must be subscribed to the linux-thinkpad and
3123 * ibm-acpi-devel mailing lists, and you should read the
3124 * list archives since 2007 if you want to change the
3125 * keymaps. This requirement exists so that you will
3126 * know the past history of problems with the thinkpad-
3127 * acpi driver keymaps, and also that you will be
3128 * listening to any bug reports;
3129 *
3130 * 3. Do not send thinkpad-acpi specific patches directly to
3131 * for merging, *ever*. Send them to the linux-acpi
3132 * mailinglist for comments. Merging is to be done only
3133 * through acpi-test and the ACPI maintainer.
3134 *
3135 * If the above is too much to ask, don't change the keymap.
3136 * Ask the thinkpad-acpi maintainer to do it, instead.
3137 */
d1e14dca
HMH		 3138
3139 enum keymap_index {
3140 TPACPI_KEYMAP_IBM_GENERIC = 0,
3141 TPACPI_KEYMAP_LENOVO_GENERIC,
3142 };
3143
3144 static const tpacpi_keymap_t tpacpi_keymaps[] __initconst = {
3145 /* Generic keymap for IBM ThinkPads */
3146 [TPACPI_KEYMAP_IBM_GENERIC] = {
edf0e0e5 3147 /* Scan Codes 0x00 to 0x0B: ACPI HKEY FN+F1..F12 */
d1e14dca 3148 KEY_FN_F1, KEY_BATTERY, KEY_COFFEE, KEY_SLEEP,
edf0e0e5
HMH		 3149 KEY_WLAN, KEY_FN_F6, KEY_SWITCHVIDEOMODE, KEY_FN_F8,
3150 KEY_FN_F9, KEY_FN_F10, KEY_FN_F11, KEY_SUSPEND,
0f089147
HMH		 3151
3152 /* Scan codes 0x0C to 0x1F: Other ACPI HKEY hot keys */
edf0e0e5
HMH		 3153 KEY_UNKNOWN, /* 0x0C: FN+BACKSPACE */
3154 KEY_UNKNOWN, /* 0x0D: FN+INSERT */
3155 KEY_UNKNOWN, /* 0x0E: FN+DELETE */
0f089147 3156
0d922e3b 3157 /* brightness: firmware always reacts to them */
e927c08d 3158 KEY_RESERVED, /* 0x0F: FN+HOME (brightness up) */
e927c08d 3159 KEY_RESERVED, /* 0x10: FN+END (brightness down) */
0f089147
HMH		 3160
3161 /* Thinklight: firmware always react to it */
edf0e0e5 3162 KEY_RESERVED, /* 0x11: FN+PGUP (thinklight toggle) */
0f089147 3163
edf0e0e5
HMH		 3164 KEY_UNKNOWN, /* 0x12: FN+PGDOWN */
3165 KEY_ZOOM, /* 0x13: FN+SPACE (zoom) */
0f089147
HMH		 3166
3167 /* Volume: firmware always react to it and reprograms
3168 * the built-in *extra* mixer. Never map it to control
3169 * another mixer by default. */
e927c08d
HMH		 3170 KEY_RESERVED, /* 0x14: VOLUME UP */
3171 KEY_RESERVED, /* 0x15: VOLUME DOWN */
3172 KEY_RESERVED, /* 0x16: MUTE */
0f089147 3173
edf0e0e5 3174 KEY_VENDOR, /* 0x17: Thinkpad/AccessIBM/Lenovo */
0f089147 3175
edf0e0e5
HMH		 3176 /* (assignments unknown, please report if found) */
3177 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN,
3178 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN,
6a68d855
BN		 3179
3180 /* No assignments, only used for Adaptive keyboards. */
3181 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN,
3182 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN,
3183 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN,
3184 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN,
3185 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN,
d1e14dca
HMH		 3186 },
3187
3188 /* Generic keymap for Lenovo ThinkPads */
3189 [TPACPI_KEYMAP_LENOVO_GENERIC] = {
edf0e0e5
HMH		 3190 /* Scan Codes 0x00 to 0x0B: ACPI HKEY FN+F1..F12 */
3191 KEY_FN_F1, KEY_COFFEE, KEY_BATTERY, KEY_SLEEP,
2b754262 3192 KEY_WLAN, KEY_CAMERA, KEY_SWITCHVIDEOMODE, KEY_FN_F8,
edf0e0e5 3193 KEY_FN_F9, KEY_FN_F10, KEY_FN_F11, KEY_SUSPEND,
0f089147
HMH		 3194
3195 /* Scan codes 0x0C to 0x1F: Other ACPI HKEY hot keys */
edf0e0e5
HMH		 3196 KEY_UNKNOWN, /* 0x0C: FN+BACKSPACE */
3197 KEY_UNKNOWN, /* 0x0D: FN+INSERT */
3198 KEY_UNKNOWN, /* 0x0E: FN+DELETE */
0f089147 3199
de4c8cc7
HMH		 3200 /* These should be enabled --only-- when ACPI video
3201 * is disabled (i.e. in "vendor" mode), and are handled
3202 * in a special way by the init code */
3203 KEY_BRIGHTNESSUP, /* 0x0F: FN+HOME (brightness up) */
3204 KEY_BRIGHTNESSDOWN, /* 0x10: FN+END (brightness down) */
0f089147 3205
edf0e0e5 3206 KEY_RESERVED, /* 0x11: FN+PGUP (thinklight toggle) */
0f089147 3207
edf0e0e5
HMH		 3208 KEY_UNKNOWN, /* 0x12: FN+PGDOWN */
3209 KEY_ZOOM, /* 0x13: FN+SPACE (zoom) */
0f089147
HMH		 3210
3211 /* Volume: z60/z61, T60 (BIOS version?): firmware always
3212 * react to it and reprograms the built-in *extra* mixer.
3213 * Never map it to control another mixer by default.
3214 *
3215 * T60?, T61, R60?, R61: firmware and EC tries to send
3216 * these over the regular keyboard, so these are no-ops,
3217 * but there are still weird bugs re. MUTE, so do not
3218 * change unless you get test reports from all Lenovo
3219 * models. May cause the BIOS to interfere with the
3220 * HDA mixer.
3221 */
e927c08d
HMH		 3222 KEY_RESERVED, /* 0x14: VOLUME UP */
3223 KEY_RESERVED, /* 0x15: VOLUME DOWN */
3224 KEY_RESERVED, /* 0x16: MUTE */
0f089147 3225
edf0e0e5 3226 KEY_VENDOR, /* 0x17: Thinkpad/AccessIBM/Lenovo */
0f089147 3227
33009557
AL		 3228 /* (assignments unknown, please report if found) */
3229 KEY_UNKNOWN, KEY_UNKNOWN,
3230
3231 /*
3232 * The mic mute button only sends 0x1a. It does not
3233 * automatically mute the mic or change the mute light.
3234 */
3235 KEY_MICMUTE, /* 0x1a: Mic mute (since ?400 or so) */
3236
edf0e0e5 3237 /* (assignments unknown, please report if found) */
33009557 3238 KEY_UNKNOWN,
8b9dd4fa
HG		 3239
3240 /* Extra keys in use since the X240 / T440 / T540 */
4beb81d1 3241 KEY_CONFIG, KEY_SEARCH, KEY_SCALE, KEY_FILE,
6a68d855
BN		 3242
3243 /*
3244 * These are the adaptive keyboard keycodes for Carbon X1 2014.
3245 * The first item in this list is the Mute button which is
3246 * emitted with 0x103 through
3247 * adaptive_keyboard_hotkey_notify_hotkey() when the sound
3248 * symbol is held.
3249 * We'll need to offset those by 0x20.
3250 */
3251 KEY_RESERVED, /* Mute held, 0x103 */
3252 KEY_BRIGHTNESS_MIN, /* Backlight off */
3253 KEY_RESERVED, /* Clipping tool */
3254 KEY_RESERVED, /* Cloud */
3255 KEY_RESERVED,
3256 KEY_VOICECOMMAND, /* Voice */
3257 KEY_RESERVED,
3258 KEY_RESERVED, /* Gestures */
3259 KEY_RESERVED,
3260 KEY_RESERVED,
3261 KEY_RESERVED,
3262 KEY_CONFIG, /* Settings */
3263 KEY_RESERVED, /* New tab */
3264 KEY_REFRESH, /* Reload */
3265 KEY_BACK, /* Back */
3266 KEY_RESERVED, /* Microphone down */
3267 KEY_RESERVED, /* Microphone up */
3268 KEY_RESERVED, /* Microphone cancellation */
3269 KEY_RESERVED, /* Camera mode */
3270 KEY_RESERVED, /* Rotate display, 0x116 */
d1e14dca 3271 },
edf0e0e5
HMH		 3272 };
3273
d1e14dca
HMH		 3274 static const struct tpacpi_quirk tpacpi_keymap_qtable[] __initconst = {
3275 /* Generic maps (fallback) */
3276 {
3277 .vendor = PCI_VENDOR_ID_IBM,
3278 .bios = TPACPI_MATCH_ANY, .ec = TPACPI_MATCH_ANY,
3279 .quirks = TPACPI_KEYMAP_IBM_GENERIC,
3280 },
3281 {
3282 .vendor = PCI_VENDOR_ID_LENOVO,
3283 .bios = TPACPI_MATCH_ANY, .ec = TPACPI_MATCH_ANY,
3284 .quirks = TPACPI_KEYMAP_LENOVO_GENERIC,
3285 },
3286 };
3287
3288#define TPACPI_HOTKEY_MAP_SIZE sizeof(tpacpi_keymap_t)
fc6e7568 3289#define TPACPI_HOTKEY_MAP_TYPESIZE sizeof(tpacpi_keymap_entry_t)
edf0e0e5 3290
6a38abbf 3291 int res, i;
74941a69 3292 int status;
1b6521dc 3293 int hkeyv;
d89a727a
HMH		 3294 bool radiosw_state = false;
3295 bool tabletsw_state = false;
b86c4722 3296
0d922e3b 3297 unsigned long quirks;
d1e14dca 3298 unsigned long keymap_id;
0d922e3b 3299
56e2c200
HMH		 3300 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY,
3301 "initializing hotkey subdriver\n");
fe08bc4b 3302
6a38abbf 3303 BUG_ON(!tpacpi_inputdev);
01e88f25
HMH		 3304 BUG_ON(tpacpi_inputdev->open != NULL ||
3305 tpacpi_inputdev->close != NULL);
6a38abbf 3306
e0c7dfe7 3307 TPACPI_ACPIHANDLE_INIT(hkey);
40ca9fdf 3308 mutex_init(&hotkey_mutex);
5fba344c 3309
01e88f25 3310#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
01e88f25
HMH		 3311 mutex_init(&hotkey_thread_data_mutex);
3312#endif
3313
56b6aeb0 3314 /* hotkey not supported on 570 */
d8fd94d9 3315 tp_features.hotkey = hkey_handle != NULL;
56b6aeb0 3316
56e2c200
HMH		 3317 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY,
3318 "hotkeys are %s\n",
d8fd94d9 3319 str_supported(tp_features.hotkey));
fe08bc4b 3320
9c0a76e1
HMH		 3321 if (!tp_features.hotkey)
3322 return 1;
a0416420 3323
f23a5bcb
BN		 3324 /*
3325 * Check if we have an adaptive keyboard, like on the
3326 * Lenovo Carbon X1 2014 (2nd Gen).
3327 */
3328 if (acpi_evalf(hkey_handle, &hkeyv, "MHKV", "qd")) {
b790ceeb 3329 if ((hkeyv >> 8) == 2) {
f23a5bcb 3330 tp_features.has_adaptive_kbd = true;
b790ceeb
BN		 3331 res = sysfs_create_group(&tpacpi_pdev->dev.kobj,
3332 &adaptive_kbd_attr_group);
3333 if (res)
3334 goto err_exit;
3335 }
f23a5bcb
BN		 3336 }
3337
0d922e3b
HMH		 3338 quirks = tpacpi_check_quirks(tpacpi_hotkey_qtable,
3339 ARRAY_SIZE(tpacpi_hotkey_qtable));
3340
d64c81c4
HMH		 3341 tpacpi_disable_brightness_delay();
3342
0d922e3b
HMH		 3343 /* MUST have enough space for all attributes to be added to
3344 * hotkey_dev_attributes */
3345 hotkey_dev_attributes = create_attr_set(
3346 ARRAY_SIZE(hotkey_attributes) + 2,
3347 NULL);
9c0a76e1
HMH		 3348 if (!hotkey_dev_attributes)
3349 return -ENOMEM;
3350 res = add_many_to_attr_set(hotkey_dev_attributes,
3351 hotkey_attributes,
3352 ARRAY_SIZE(hotkey_attributes));
3353 if (res)
3354 goto err_exit;
3355
0d922e3b 3356 /* mask not supported on 600e/x, 770e, 770x, A21e, A2xm/p,
9c0a76e1
HMH		 3357 A30, R30, R31, T20-22, X20-21, X22-24. Detected by checking
3358 for HKEY interface version 0x100 */
3359 if (acpi_evalf(hkey_handle, &hkeyv, "MHKV", "qd")) {
3360 if ((hkeyv >> 8) != 1) {
0978e012
JP		 3361 pr_err("unknown version of the HKEY interface: 0x%x\n",
3362 hkeyv);
3363 pr_err("please report this to %s\n", TPACPI_MAIL);
9c0a76e1
HMH		 3364 } else {
3365 /*
3366 * MHKV 0x100 in A31, R40, R40e,
3367 * T4x, X31, and later
3368 */
56e2c200
HMH		 3369 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY,
3370 "firmware HKEY interface version: 0x%x\n",
3371 hkeyv);
0d922e3b
HMH		 3372
3373 /* Paranoia check AND init hotkey_all_mask */
3374 if (!acpi_evalf(hkey_handle, &hotkey_all_mask,
3375 "MHKA", "qd")) {
0978e012 3376 pr_err("missing MHKA handler, "
0d922e3b
HMH		 3377 "please report this to %s\n",
3378 TPACPI_MAIL);
3379 /* Fallback: pre-init for FN+F3,F4,F12 */
3380 hotkey_all_mask = 0x080cU;
3381 } else {
3382 tp_features.hotkey_mask = 1;
3383 }
1b6521dc 3384 }
9c0a76e1 3385 }
56b6aeb0 3386
56e2c200
HMH		 3387 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY,
3388 "hotkey masks are %s\n",
9c0a76e1 3389 str_supported(tp_features.hotkey_mask));
fe08bc4b 3390
0d922e3b
HMH		 3391 /* Init hotkey_all_mask if not initialized yet */
3392 if (!tp_features.hotkey_mask && !hotkey_all_mask &&
3393 (quirks & TPACPI_HK_Q_INIMASK))
3394 hotkey_all_mask = 0x080cU; /* FN+F12, FN+F4, FN+F3 */
9b010de5 3395
0d922e3b 3396 /* Init hotkey_acpi_mask and hotkey_orig_mask */
9c0a76e1 3397 if (tp_features.hotkey_mask) {
0d922e3b
HMH		 3398 /* hotkey_source_mask *must* be zero for
3399 * the first hotkey_mask_get to return hotkey_orig_mask */
9c0a76e1
HMH		 3400 res = hotkey_mask_get();
3401 if (res)
3402 goto err_exit;
3403
0d922e3b
HMH		 3404 hotkey_orig_mask = hotkey_acpi_mask;
3405 } else {
3406 hotkey_orig_mask = hotkey_all_mask;
3407 hotkey_acpi_mask = hotkey_all_mask;
9c0a76e1 3408 }
74941a69 3409
a73f3091
HMH		 3410#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
3411 if (dbg_wlswemul) {
3412 tp_features.hotkey_wlsw = 1;
d89a727a 3413 radiosw_state = !!tpacpi_wlsw_emulstate;
0978e012 3414 pr_info("radio switch emulation enabled\n");
a73f3091
HMH		 3415 } else
3416#endif
9c0a76e1
HMH		 3417 /* Not all thinkpads have a hardware radio switch */
3418 if (acpi_evalf(hkey_handle, &status, "WLSW", "qd")) {
3419 tp_features.hotkey_wlsw = 1;
d89a727a 3420 radiosw_state = !!status;
0978e012 3421 pr_info("radio switch found; radios are %s\n",
9c0a76e1 3422 enabled(status, 0));
3a872080
HMH		 3423 }
3424 if (tp_features.hotkey_wlsw)
9c0a76e1
HMH		 3425 res = add_to_attr_set(hotkey_dev_attributes,
3426 &dev_attr_hotkey_radio_sw.attr);
74941a69 3427
9c0a76e1
HMH		 3428 /* For X41t, X60t, X61t Tablets... */
3429 if (!res && acpi_evalf(hkey_handle, &status, "MHKG", "qd")) {
3430 tp_features.hotkey_tablet = 1;
d89a727a 3431 tabletsw_state = !!(status & TP_HOTKEY_TABLET_MASK);
0978e012 3432 pr_info("possible tablet mode switch found; "
9c0a76e1 3433 "ThinkPad in %s mode\n",
d89a727a 3434 (tabletsw_state) ? "tablet" : "laptop");
9c0a76e1
HMH		 3435 res = add_to_attr_set(hotkey_dev_attributes,
3436 &dev_attr_hotkey_tablet_mode.attr);
3437 }
6c231bd5 3438
9c0a76e1
HMH		 3439 if (!res)
3440 res = register_attr_set_with_sysfs(
3441 hotkey_dev_attributes,
3442 &tpacpi_pdev->dev.kobj);
3443 if (res)
3444 goto err_exit;
6a38abbf 3445
9c0a76e1 3446 /* Set up key map */
9c0a76e1
HMH		 3447 hotkey_keycode_map = kmalloc(TPACPI_HOTKEY_MAP_SIZE,
3448 GFP_KERNEL);
3449 if (!hotkey_keycode_map) {
0978e012 3450 pr_err("failed to allocate memory for key map\n");
9c0a76e1
HMH		 3451 res = -ENOMEM;
3452 goto err_exit;
3453 }
edf0e0e5 3454
d1e14dca
HMH		 3455 keymap_id = tpacpi_check_quirks(tpacpi_keymap_qtable,
3456 ARRAY_SIZE(tpacpi_keymap_qtable));
3457 BUG_ON(keymap_id >= ARRAY_SIZE(tpacpi_keymaps));
3458 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY,
3459 "using keymap number %lu\n", keymap_id);
3460
3461 memcpy(hotkey_keycode_map, &tpacpi_keymaps[keymap_id],
3462 TPACPI_HOTKEY_MAP_SIZE);
edf0e0e5 3463
792979c8 3464 input_set_capability(tpacpi_inputdev, EV_MSC, MSC_SCAN);
9c0a76e1
HMH		 3465 tpacpi_inputdev->keycodesize = TPACPI_HOTKEY_MAP_TYPESIZE;
3466 tpacpi_inputdev->keycodemax = TPACPI_HOTKEY_MAP_LEN;
3467 tpacpi_inputdev->keycode = hotkey_keycode_map;
3468 for (i = 0; i < TPACPI_HOTKEY_MAP_LEN; i++) {
3469 if (hotkey_keycode_map[i] != KEY_RESERVED) {
792979c8
HMH		 3470 input_set_capability(tpacpi_inputdev, EV_KEY,
3471 hotkey_keycode_map[i]);
9c0a76e1
HMH		 3472 } else {
3473 if (i < sizeof(hotkey_reserved_mask)*8)
3474 hotkey_reserved_mask |= 1 << i;
6a38abbf 3475 }
9c0a76e1 3476 }
6a38abbf 3477
9c0a76e1 3478 if (tp_features.hotkey_wlsw) {
792979c8 3479 input_set_capability(tpacpi_inputdev, EV_SW, SW_RFKILL_ALL);
d89a727a
HMH		 3480 input_report_switch(tpacpi_inputdev,
3481 SW_RFKILL_ALL, radiosw_state);
9c0a76e1
HMH		 3482 }
3483 if (tp_features.hotkey_tablet) {
792979c8 3484 input_set_capability(tpacpi_inputdev, EV_SW, SW_TABLET_MODE);
d89a727a
HMH		 3485 input_report_switch(tpacpi_inputdev,
3486 SW_TABLET_MODE, tabletsw_state);
9c0a76e1 3487 }
5c29d58f 3488
9c0a76e1 3489 /* Do not issue duplicate brightness change events to
77775838
HMH		 3490 * userspace. tpacpi_detect_brightness_capabilities() must have
3491 * been called before this point */
b33c6ce5 3492 if (acpi_video_get_backlight_type() != acpi_backlight_vendor) {
0978e012
JP		 3493 pr_info("This ThinkPad has standard ACPI backlight "
3494 "brightness control, supported by the ACPI "
3495 "video driver\n");
3496 pr_notice("Disabling thinkpad-acpi brightness events "
3497 "by default...\n");
9c0a76e1 3498
de4c8cc7
HMH		 3499 /* Disable brightness up/down on Lenovo thinkpads when
3500 * ACPI is handling them, otherwise it is plain impossible
3501 * for userspace to do something even remotely sane */
9c0a76e1
HMH		 3502 hotkey_reserved_mask |=
3503 (1 << TP_ACPI_HOTKEYSCAN_FNHOME)
3504 | (1 << TP_ACPI_HOTKEYSCAN_FNEND);
de4c8cc7
HMH		 3505 hotkey_unmap(TP_ACPI_HOTKEYSCAN_FNHOME);
3506 hotkey_unmap(TP_ACPI_HOTKEYSCAN_FNEND);
9c0a76e1 3507 }
ff80f137 3508
230d8cf2 3509#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
0d922e3b
HMH		 3510 hotkey_source_mask = TPACPI_HKEY_NVRAM_GOOD_MASK
3511 & ~hotkey_all_mask
3512 & ~hotkey_reserved_mask;
230d8cf2
HMH		 3513
3514 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY,
3515 "hotkey source mask 0x%08x, polling freq %u\n",
3516 hotkey_source_mask, hotkey_poll_freq);
3517#endif
3518
56e2c200
HMH		 3519 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY,
3520 "enabling firmware HKEY event interface...\n");
2586d566 3521 res = hotkey_status_set(true);
9c0a76e1
HMH		 3522 if (res) {
3523 hotkey_exit();
3524 return res;
3525 }
0d922e3b
HMH		 3526 res = hotkey_mask_set(((hotkey_all_mask & ~hotkey_reserved_mask)
3527 | hotkey_driver_mask)
3528 & ~hotkey_source_mask);
9c0a76e1
HMH		 3529 if (res < 0 && res != -ENXIO) {
3530 hotkey_exit();
3531 return res;
3532 }
0d922e3b
HMH		 3533 hotkey_user_mask = (hotkey_acpi_mask | hotkey_source_mask)
3534 & ~hotkey_reserved_mask;
3535 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY,
3536 "initial masks: user=0x%08x, fw=0x%08x, poll=0x%08x\n",
3537 hotkey_user_mask, hotkey_acpi_mask, hotkey_source_mask);
01e88f25 3538
9c0a76e1
HMH		 3539 tpacpi_inputdev->open = &hotkey_inputdev_open;
3540 tpacpi_inputdev->close = &hotkey_inputdev_close;
56b6aeb0 3541
db25f16d 3542 hotkey_poll_setup_safe(true);
56b6aeb0 3543
9c0a76e1 3544 return 0;
01e88f25 3545
9c0a76e1
HMH		 3546err_exit:
3547 delete_attr_set(hotkey_dev_attributes, &tpacpi_pdev->dev.kobj);
b790ceeb
BN		 3548 sysfs_remove_group(&tpacpi_pdev->dev.kobj,
3549 &adaptive_kbd_attr_group);
3550
9c0a76e1 3551 hotkey_dev_attributes = NULL;
a0416420 3552
72a979f0 3553 return (res < 0) ? res : 1;
56b6aeb0
HMH		 3554}
3555
3a9d20bd
SS		 3556/* Thinkpad X1 Carbon support 5 modes including Home mode, Web browser
3557 * mode, Web conference mode, Function mode and Lay-flat mode.
3558 * We support Home mode and Function mode currently.
3559 *
3560 * Will consider support rest of modes in future.
3561 *
3562 */
b201a47f 3563static const int adaptive_keyboard_modes[] = {
3a9d20bd
SS		 3564 HOME_MODE,
3565/* WEB_BROWSER_MODE = 2,
3566 WEB_CONFERENCE_MODE = 3, */
3567 FUNCTION_MODE
3568};
3569
3570#define DFR_CHANGE_ROW 0x101
3571#define DFR_SHOW_QUICKVIEW_ROW 0x102
6a68d855
BN		 3572#define FIRST_ADAPTIVE_KEY 0x103
3573#define ADAPTIVE_KEY_OFFSET 0x020
3a9d20bd
SS		 3574
3575/* press Fn key a while second, it will switch to Function Mode. Then
3576 * release Fn key, previous mode be restored.
3577 */
3578static bool adaptive_keyboard_mode_is_saved;
3579static int adaptive_keyboard_prev_mode;
3580
f74587fb
BN		 3581static int adaptive_keyboard_get_mode(void)
3582{
3583 int mode = 0;
3584
3585 if (!acpi_evalf(hkey_handle, &mode, "GTRW", "dd", 0)) {
3586 pr_err("Cannot read adaptive keyboard mode\n");
3587 return -EIO;
3588 }
3589
3590 return mode;
3591}
3592
3593static int adaptive_keyboard_set_mode(int new_mode)
3594{
3595 if (new_mode < 0 ||
3596 new_mode > LAYFLAT_MODE)
3597 return -EINVAL;
3598
3599 if (!acpi_evalf(hkey_handle, NULL, "STRW", "vd", new_mode)) {
3600 pr_err("Cannot set adaptive keyboard mode\n");
3601 return -EIO;
3602 }
3603
3604 return 0;
3605}
3606
3a9d20bd
SS		 3607static int adaptive_keyboard_get_next_mode(int mode)
3608{
3609 size_t i;
3610 size_t max_mode = ARRAY_SIZE(adaptive_keyboard_modes) - 1;
3611
3612 for (i = 0; i <= max_mode; i++) {
3613 if (adaptive_keyboard_modes[i] == mode)
3614 break;
3615 }
3616
3617 if (i >= max_mode)
3618 i = 0;
3619 else
3620 i++;
3621
3622 return adaptive_keyboard_modes[i];
3623}
3624
3625static bool adaptive_keyboard_hotkey_notify_hotkey(unsigned int scancode)
3626{
abf9dc0d 3627 int current_mode = 0;
3a9d20bd 3628 int new_mode = 0;
6a68d855 3629 int keycode;
3a9d20bd
SS		 3630
3631 switch (scancode) {
3632 case DFR_CHANGE_ROW:
3633 if (adaptive_keyboard_mode_is_saved) {
3634 new_mode = adaptive_keyboard_prev_mode;
3635 adaptive_keyboard_mode_is_saved = false;
3636 } else {
f74587fb
BN		 3637 current_mode = adaptive_keyboard_get_mode();
3638 if (current_mode < 0)
3a9d20bd 3639 return false;
f74587fb
BN		 3640 new_mode = adaptive_keyboard_get_next_mode(
3641 current_mode);
3a9d20bd
SS		 3642 }
3643
f74587fb 3644 if (adaptive_keyboard_set_mode(new_mode) < 0)
3a9d20bd 3645 return false;
3a9d20bd
SS		 3646
3647 return true;
3648
3649 case DFR_SHOW_QUICKVIEW_ROW:
f74587fb
BN		 3650 current_mode = adaptive_keyboard_get_mode();
3651 if (current_mode < 0)
3a9d20bd 3652 return false;
3a9d20bd 3653
f74587fb
BN		 3654 adaptive_keyboard_prev_mode = current_mode;
3655 adaptive_keyboard_mode_is_saved = true;
3656
3657 if (adaptive_keyboard_set_mode (FUNCTION_MODE) < 0)
3658 return false;
3a9d20bd
SS		 3659 return true;
3660
3661 default:
741d98c7
DC		 3662 if (scancode < FIRST_ADAPTIVE_KEY ||
3663 scancode >= FIRST_ADAPTIVE_KEY + TPACPI_HOTKEY_MAP_LEN -
3664 ADAPTIVE_KEY_OFFSET) {
6a68d855
BN		 3665 pr_info("Unhandled adaptive keyboard key: 0x%x\n",
3666 scancode);
3667 return false;
3668 }
3669 keycode = hotkey_keycode_map[scancode - FIRST_ADAPTIVE_KEY + ADAPTIVE_KEY_OFFSET];
3670 if (keycode != KEY_RESERVED) {
3671 mutex_lock(&tpacpi_inputdev_send_mutex);
3672
3673 input_report_key(tpacpi_inputdev, keycode, 1);
3674 input_sync(tpacpi_inputdev);
3675
3676 input_report_key(tpacpi_inputdev, keycode, 0);
3677 input_sync(tpacpi_inputdev);
3678
3679 mutex_unlock(&tpacpi_inputdev_send_mutex);
3680 }
3681 return true;
3a9d20bd
SS		 3682 }
3683}
3684
3827e7a3
HMH		 3685static bool hotkey_notify_hotkey(const u32 hkey,
3686 bool *send_acpi_ev,
3687 bool *ignore_acpi_ev)
3688{
3689 /* 0x1000-0x1FFF: key presses */
3690 unsigned int scancode = hkey & 0xfff;
3691 *send_acpi_ev = true;
3692 *ignore_acpi_ev = false;
3693
34a656d2
HMH		 3694 /* HKEY event 0x1001 is scancode 0x00 */
3695 if (scancode > 0 && scancode <= TPACPI_HOTKEY_MAP_LEN) {
3827e7a3
HMH		 3696 scancode--;
3697 if (!(hotkey_source_mask & (1 << scancode))) {
0d922e3b 3698 tpacpi_input_send_key_masked(scancode);
3827e7a3
HMH		 3699 *send_acpi_ev = false;
3700 } else {
3701 *ignore_acpi_ev = true;
3702 }
3703 return true;
3a9d20bd
SS		 3704 } else {
3705 return adaptive_keyboard_hotkey_notify_hotkey(scancode);
3827e7a3
HMH		 3706 }
3707 return false;
3708}
3709
3710static bool hotkey_notify_wakeup(const u32 hkey,
3711 bool *send_acpi_ev,
3712 bool *ignore_acpi_ev)
3713{
3714 /* 0x2000-0x2FFF: Wakeup reason */
3715 *send_acpi_ev = true;
3716 *ignore_acpi_ev = false;
3717
3718 switch (hkey) {
67bcae6e
HMH		 3719 case TP_HKEY_EV_WKUP_S3_UNDOCK: /* suspend, undock */
3720 case TP_HKEY_EV_WKUP_S4_UNDOCK: /* hibernation, undock */
3827e7a3
HMH		 3721 hotkey_wakeup_reason = TP_ACPI_WAKEUP_UNDOCK;
3722 *ignore_acpi_ev = true;
3723 break;
3724
67bcae6e
HMH		 3725 case TP_HKEY_EV_WKUP_S3_BAYEJ: /* suspend, bay eject */
3726 case TP_HKEY_EV_WKUP_S4_BAYEJ: /* hibernation, bay eject */
3827e7a3
HMH		 3727 hotkey_wakeup_reason = TP_ACPI_WAKEUP_BAYEJ;
3728 *ignore_acpi_ev = true;
3729 break;
3730
67bcae6e
HMH		 3731 case TP_HKEY_EV_WKUP_S3_BATLOW: /* Battery on critical low level/S3 */
3732 case TP_HKEY_EV_WKUP_S4_BATLOW: /* Battery on critical low level/S4 */
0978e012 3733 pr_alert("EMERGENCY WAKEUP: battery almost empty\n");
106b4e66
HMH		 3734 /* how to auto-heal: */
3735 /* 2313: woke up from S3, go to S4/S5 */
3736 /* 2413: woke up from S4, go to S5 */
3737 break;
3738
3827e7a3
HMH		 3739 default:
3740 return false;
3741 }
3742
3743 if (hotkey_wakeup_reason != TP_ACPI_WAKEUP_NONE) {
0978e012 3744 pr_info("woke up due to a hot-unplug request...\n");
3827e7a3
HMH		 3745 hotkey_wakeup_reason_notify_change();
3746 }
3747 return true;
3748}
3749
a50245af
HMH		 3750static bool hotkey_notify_dockevent(const u32 hkey,
3751 bool *send_acpi_ev,
3752 bool *ignore_acpi_ev)
3753{
3754 /* 0x4000-0x4FFF: dock-related events */
3755 *send_acpi_ev = true;
3756 *ignore_acpi_ev = false;
3757
3758 switch (hkey) {
3759 case TP_HKEY_EV_UNDOCK_ACK:
3760 /* ACPI undock operation completed after wakeup */
3761 hotkey_autosleep_ack = 1;
3762 pr_info("undocked\n");
3763 hotkey_wakeup_hotunplug_complete_notify_change();
3764 return true;
3765
3766 case TP_HKEY_EV_HOTPLUG_DOCK: /* docked to port replicator */
3767 pr_info("docked into hotplug port replicator\n");
3768 return true;
3769 case TP_HKEY_EV_HOTPLUG_UNDOCK: /* undocked from port replicator */
3770 pr_info("undocked from hotplug port replicator\n");
3771 return true;
3772
3773 default:
3774 return false;
3775 }
3776}
3777
3827e7a3
HMH		 3778static bool hotkey_notify_usrevent(const u32 hkey,
3779 bool *send_acpi_ev,
3780 bool *ignore_acpi_ev)
3781{
3782 /* 0x5000-0x5FFF: human interface helpers */
3783 *send_acpi_ev = true;
3784 *ignore_acpi_ev = false;
3785
3786 switch (hkey) {
67bcae6e
HMH		 3787 case TP_HKEY_EV_PEN_INSERTED: /* X61t: tablet pen inserted into bay */
3788 case TP_HKEY_EV_PEN_REMOVED: /* X61t: tablet pen removed from bay */
3827e7a3
HMH		 3789 return true;
3790
67bcae6e
HMH		 3791 case TP_HKEY_EV_TABLET_TABLET: /* X41t-X61t: tablet mode */
3792 case TP_HKEY_EV_TABLET_NOTEBOOK: /* X41t-X61t: normal mode */
3827e7a3
HMH		 3793 tpacpi_input_send_tabletsw();
3794 hotkey_tablet_mode_notify_change();
3795 *send_acpi_ev = false;
3796 return true;
3797
67bcae6e
HMH		 3798 case TP_HKEY_EV_LID_CLOSE: /* Lid closed */
3799 case TP_HKEY_EV_LID_OPEN: /* Lid opened */
3800 case TP_HKEY_EV_BRGHT_CHANGED: /* brightness changed */
176dd985 3801 /* do not propagate these events */
3827e7a3
HMH		 3802 *ignore_acpi_ev = true;
3803 return true;
3804
3805 default:
3806 return false;
3807 }
3808}
3809
9ebd9e83
HMH		 3810static void thermal_dump_all_sensors(void);
3811
2d43f671 3812static bool hotkey_notify_6xxx(const u32 hkey,
106b4e66
HMH		 3813 bool *send_acpi_ev,
3814 bool *ignore_acpi_ev)
3815{
9ebd9e83
HMH		 3816 bool known = true;
3817
2d43f671 3818 /* 0x6000-0x6FFF: thermal alarms/notices and keyboard events */
106b4e66
HMH		 3819 *send_acpi_ev = true;
3820 *ignore_acpi_ev = false;
3821
3822 switch (hkey) {
9ebd9e83 3823 case TP_HKEY_EV_THM_TABLE_CHANGED:
0978e012 3824 pr_info("EC reports that Thermal Table has changed\n");
9ebd9e83
HMH		 3825 /* recommended action: do nothing, we don't have
3826 * Lenovo ATM information */
3827 return true;
67bcae6e 3828 case TP_HKEY_EV_ALARM_BAT_HOT:
0978e012 3829 pr_crit("THERMAL ALARM: battery is too hot!\n");
106b4e66 3830 /* recommended action: warn user through gui */
9ebd9e83 3831 break;
67bcae6e 3832 case TP_HKEY_EV_ALARM_BAT_XHOT:
0978e012 3833 pr_alert("THERMAL EMERGENCY: battery is extremely hot!\n");
106b4e66 3834 /* recommended action: immediate sleep/hibernate */
9ebd9e83 3835 break;
67bcae6e 3836 case TP_HKEY_EV_ALARM_SENSOR_HOT:
0978e012 3837 pr_crit("THERMAL ALARM: "
106b4e66
HMH		 3838 "a sensor reports something is too hot!\n");
3839 /* recommended action: warn user through gui, that */
3840 /* some internal component is too hot */
9ebd9e83 3841 break;
67bcae6e 3842 case TP_HKEY_EV_ALARM_SENSOR_XHOT:
0978e012
JP		 3843 pr_alert("THERMAL EMERGENCY: "
3844 "a sensor reports something is extremely hot!\n");
106b4e66 3845 /* recommended action: immediate sleep/hibernate */
9ebd9e83 3846 break;
6f62bc3e
RH		 3847 case TP_HKEY_EV_AC_CHANGED:
3848 /* X120e, X121e, X220, X220i, X220t, X230, T420, T420s, W520:
3849 * AC status changed; can be triggered by plugging or
3850 * unplugging AC adapter, docking or undocking. */
3851
3852 /* fallthrough */
2d43f671
HMH		 3853
3854 case TP_HKEY_EV_KEY_NUMLOCK:
3855 case TP_HKEY_EV_KEY_FN:
67ab6248 3856 case TP_HKEY_EV_KEY_FN_ESC:
2d43f671
HMH		 3857 /* key press events, we just ignore them as long as the EC
3858 * is still reporting them in the normal keyboard stream */
3859 *send_acpi_ev = false;
3860 *ignore_acpi_ev = true;
3861 return true;
3862
106b4e66 3863 default:
2d43f671 3864 pr_warn("unknown possible thermal alarm or keyboard event received\n");
9ebd9e83 3865 known = false;
106b4e66 3866 }
9ebd9e83
HMH		 3867
3868 thermal_dump_all_sensors();
3869
3870 return known;
106b4e66
HMH		 3871}
3872
56b6aeb0
HMH		 3873static void hotkey_notify(struct ibm_struct *ibm, u32 event)
3874{
6a38abbf 3875 u32 hkey;
3827e7a3
HMH		 3876 bool send_acpi_ev;
3877 bool ignore_acpi_ev;
3878 bool known_ev;
3eea123d
HMH		 3879
3880 if (event != 0x80) {
0978e012 3881 pr_err("unknown HKEY notification event %d\n", event);
3eea123d 3882 /* forward it to userspace, maybe it knows how to handle it */
35ff8b9f
HMH		 3883 acpi_bus_generate_netlink_event(
3884 ibm->acpi->device->pnp.device_class,
e0b36fc5 3885 dev_name(&ibm->acpi->device->dev),
35ff8b9f 3886 event, 0);
3eea123d
HMH		 3887 return;
3888 }
3889
3890 while (1) {
3891 if (!acpi_evalf(hkey_handle, &hkey, "MHKP", "d")) {
0978e012 3892 pr_err("failed to retrieve HKEY event\n");
3eea123d
HMH		 3893 return;
3894 }
3895
3896 if (hkey == 0) {
3897 /* queue empty */
3898 return;
3899 }
3900
3827e7a3
HMH		 3901 send_acpi_ev = true;
3902 ignore_acpi_ev = false;
56b6aeb0 3903
ff80f137
HMH		 3904 switch (hkey >> 12) {
3905 case 1:
3906 /* 0x1000-0x1FFF: key presses */
3827e7a3
HMH		 3907 known_ev = hotkey_notify_hotkey(hkey, &send_acpi_ev,
3908 &ignore_acpi_ev);
ff80f137 3909 break;
a713b4d7 3910 case 2:
3827e7a3
HMH		 3911 /* 0x2000-0x2FFF: Wakeup reason */
3912 known_ev = hotkey_notify_wakeup(hkey, &send_acpi_ev,
3913 &ignore_acpi_ev);
a713b4d7
HMH		 3914 break;
3915 case 3:
3827e7a3 3916 /* 0x3000-0x3FFF: bay-related wakeups */
bf8b29c8
HMH		 3917 switch (hkey) {
3918 case TP_HKEY_EV_BAYEJ_ACK:
a713b4d7 3919 hotkey_autosleep_ack = 1;
0978e012 3920 pr_info("bay ejected\n");
50ebec09 3921 hotkey_wakeup_hotunplug_complete_notify_change();
3827e7a3 3922 known_ev = true;
bf8b29c8
HMH		 3923 break;
3924 case TP_HKEY_EV_OPTDRV_EJ:
3925 /* FIXME: kick libata if SATA link offline */
3926 known_ev = true;
3927 break;
3928 default:
3827e7a3 3929 known_ev = false;
a713b4d7
HMH		 3930 }
3931 break;
3932 case 4:
a50245af
HMH		 3933 /* 0x4000-0x4FFF: dock-related events */
3934 known_ev = hotkey_notify_dockevent(hkey, &send_acpi_ev,
3935 &ignore_acpi_ev);
a713b4d7 3936 break;
ff80f137 3937 case 5:
d1edb2b5 3938 /* 0x5000-0x5FFF: human interface helpers */
3827e7a3
HMH		 3939 known_ev = hotkey_notify_usrevent(hkey, &send_acpi_ev,
3940 &ignore_acpi_ev);
ff80f137 3941 break;
106b4e66 3942 case 6:
2d43f671
HMH		 3943 /* 0x6000-0x6FFF: thermal alarms/notices and
3944 * keyboard events */
3945 known_ev = hotkey_notify_6xxx(hkey, &send_acpi_ev,
106b4e66
HMH		 3946 &ignore_acpi_ev);
3947 break;
ff80f137
HMH		 3948 case 7:
3949 /* 0x7000-0x7FFF: misc */
67bcae6e
HMH		 3950 if (tp_features.hotkey_wlsw &&
3951 hkey == TP_HKEY_EV_RFKILL_CHANGED) {
733e27c1 3952 tpacpi_send_radiosw_update();
3b64b51d 3953 send_acpi_ev = 0;
3827e7a3 3954 known_ev = true;
6a38abbf 3955 break;
6a38abbf 3956 }
ff80f137
HMH		 3957 /* fallthrough to default */
3958 default:
3827e7a3 3959 known_ev = false;
3b64b51d 3960 }
3827e7a3 3961 if (!known_ev) {
0978e012
JP		 3962 pr_notice("unhandled HKEY event 0x%04x\n", hkey);
3963 pr_notice("please report the conditions when this "
3964 "event happened to %s\n", TPACPI_MAIL);
6a38abbf 3965 }
ff80f137 3966
3eea123d 3967 /* netlink events */
3e5ce914 3968 if (!ignore_acpi_ev && send_acpi_ev) {
35ff8b9f
HMH		 3969 acpi_bus_generate_netlink_event(
3970 ibm->acpi->device->pnp.device_class,
e0b36fc5 3971 dev_name(&ibm->acpi->device->dev),
35ff8b9f 3972 event, hkey);
3eea123d 3973 }
56b6aeb0
HMH		 3974 }
3975}
3976
fd3c3a42 3977static void hotkey_suspend(void)
a713b4d7
HMH		 3978{
3979 /* Do these on suspend, we get the events on early resume! */
3980 hotkey_wakeup_reason = TP_ACPI_WAKEUP_NONE;
3981 hotkey_autosleep_ack = 0;
330947b8
SS		 3982
3983 /* save previous mode of adaptive keyboard of X1 Carbon */
f23a5bcb
BN		 3984 if (tp_features.has_adaptive_kbd) {
3985 if (!acpi_evalf(hkey_handle, &adaptive_keyboard_prev_mode,
3986 "GTRW", "dd", 0)) {
3987 pr_err("Cannot read adaptive keyboard mode.\n");
330947b8
SS		 3988 }
3989 }
a713b4d7
HMH		 3990}
3991
5c29d58f
HMH		 3992static void hotkey_resume(void)
3993{
d64c81c4
HMH		 3994 tpacpi_disable_brightness_delay();
3995
0d922e3b
HMH		 3996 if (hotkey_status_set(true) < 0 ||
3997 hotkey_mask_set(hotkey_acpi_mask) < 0)
0978e012 3998 pr_err("error while attempting to reset the event "
0d922e3b
HMH		 3999 "firmware interface\n");
4000
733e27c1 4001 tpacpi_send_radiosw_update();
6c231bd5 4002 hotkey_tablet_mode_notify_change();
50ebec09
HMH		 4003 hotkey_wakeup_reason_notify_change();
4004 hotkey_wakeup_hotunplug_complete_notify_change();
db25f16d 4005 hotkey_poll_setup_safe(false);
330947b8
SS		 4006
4007 /* restore previous mode of adapive keyboard of X1 Carbon */
f23a5bcb
BN		 4008 if (tp_features.has_adaptive_kbd) {
4009 if (!acpi_evalf(hkey_handle, NULL, "STRW", "vd",
4010 adaptive_keyboard_prev_mode)) {
4011 pr_err("Cannot set adaptive keyboard mode.\n");
330947b8
SS		 4012 }
4013 }
5c29d58f
HMH		 4014}
4015
a0416420 4016/* procfs -------------------------------------------------------------- */
887965e6 4017static int hotkey_read(struct seq_file *m)
1da177e4 4018{
ae92bd17 4019 int res, status;
1da177e4 4020
d8fd94d9 4021 if (!tp_features.hotkey) {
887965e6
AD		 4022 seq_printf(m, "status:\t\tnot supported\n");
4023 return 0;
78f81cc4
BD		 4024 }
4025
7646ea88 4026 if (mutex_lock_killable(&hotkey_mutex))
fc589a3c 4027 return -ERESTARTSYS;
b2c985e7
HMH		 4028 res = hotkey_status_get(&status);
4029 if (!res)
4030 res = hotkey_mask_get();
40ca9fdf 4031 mutex_unlock(&hotkey_mutex);
b86c4722
HMH		 4032 if (res)
4033 return res;
1da177e4 4034
887965e6 4035 seq_printf(m, "status:\t\t%s\n", enabled(status, 0));
0d922e3b 4036 if (hotkey_all_mask) {
887965e6
AD		 4037 seq_printf(m, "mask:\t\t0x%08x\n", hotkey_user_mask);
4038 seq_printf(m, "commands:\tenable, disable, reset, <mask>\n");
1da177e4 4039 } else {
887965e6
AD		 4040 seq_printf(m, "mask:\t\tnot supported\n");
4041 seq_printf(m, "commands:\tenable, disable, reset\n");
1da177e4
LT		 4042 }
4043
887965e6 4044 return 0;
1da177e4
LT		 4045}
4046
406e988b 4047static void hotkey_enabledisable_warn(bool enable)
2586d566
HMH		 4048{
4049 tpacpi_log_usertask("procfs hotkey enable/disable");
406e988b 4050 if (!WARN((tpacpi_lifecycle == TPACPI_LIFE_RUNNING || !enable),
0978e012
JP		 4051 pr_fmt("hotkey enable/disable functionality has been "
4052 "removed from the driver. "
4053 "Hotkeys are always enabled.\n")))
4054 pr_err("Please remove the hotkey=enable module "
4055 "parameter, it is deprecated. "
4056 "Hotkeys are always enabled.\n");
2586d566
HMH		 4057}
4058
78f81cc4 4059static int hotkey_write(char *buf)
1da177e4 4060{
2586d566 4061 int res;
ae92bd17 4062 u32 mask;
1da177e4 4063 char *cmd;
1da177e4 4064
d8fd94d9 4065 if (!tp_features.hotkey)
1da177e4
LT		 4066 return -ENODEV;
4067
7646ea88 4068 if (mutex_lock_killable(&hotkey_mutex))
fc589a3c 4069 return -ERESTARTSYS;
40ca9fdf 4070
0d922e3b 4071 mask = hotkey_user_mask;
78f81cc4 4072
40ca9fdf 4073 res = 0;
1da177e4
LT		 4074 while ((cmd = next_cmd(&buf))) {
4075 if (strlencmp(cmd, "enable") == 0) {
406e988b 4076 hotkey_enabledisable_warn(1);
1da177e4 4077 } else if (strlencmp(cmd, "disable") == 0) {
406e988b 4078 hotkey_enabledisable_warn(0);
2586d566 4079 res = -EPERM;
1da177e4 4080 } else if (strlencmp(cmd, "reset") == 0) {
20c9aa46
HMH		 4081 mask = (hotkey_all_mask | hotkey_source_mask)
4082 & ~hotkey_reserved_mask;
1da177e4
LT		 4083 } else if (sscanf(cmd, "0x%x", &mask) == 1) {
4084 /* mask set */
4085 } else if (sscanf(cmd, "%x", &mask) == 1) {
4086 /* mask set */
40ca9fdf
HMH		 4087 } else {
4088 res = -EINVAL;
4089 goto errexit;
4090 }
1da177e4 4091 }
56e2c200 4092
0d922e3b 4093 if (!res) {
56e2c200
HMH		 4094 tpacpi_disclose_usertask("procfs hotkey",
4095 "set mask to 0x%08x\n", mask);
0d922e3b
HMH		 4096 res = hotkey_user_mask_set(mask);
4097 }
1da177e4 4098
40ca9fdf
HMH		 4099errexit:
4100 mutex_unlock(&hotkey_mutex);
4101 return res;
78f81cc4 4102}
1da177e4 4103
1ba90e3a 4104static const struct acpi_device_id ibm_htk_device_ids[] = {
9fbdaeb4
MI		 4105 {TPACPI_ACPI_IBM_HKEY_HID, 0},
4106 {TPACPI_ACPI_LENOVO_HKEY_HID, 0},
1ba90e3a
TR		 4107 {"", 0},
4108};
4109
8d376cd6 4110static struct tp_acpi_drv_struct ibm_hotkey_acpidriver = {
1ba90e3a 4111 .hid = ibm_htk_device_ids,
8d376cd6
HMH		 4112 .notify = hotkey_notify,
4113 .handle = &hkey_handle,
4114 .type = ACPI_DEVICE_NOTIFY,
4115};
4116
a5763f22
HMH		 4117static struct ibm_struct hotkey_driver_data = {
4118 .name = "hotkey",
a5763f22
HMH		 4119 .read = hotkey_read,
4120 .write = hotkey_write,
4121 .exit = hotkey_exit,
5c29d58f 4122 .resume = hotkey_resume,
a713b4d7 4123 .suspend = hotkey_suspend,
8d376cd6 4124 .acpi = &ibm_hotkey_acpidriver,
a5763f22
HMH		 4125};
4126
56b6aeb0
HMH		 4127/*************************************************************************
4128 * Bluetooth subdriver
4129 */
1da177e4 4130
f74a27d4
HMH		 4131enum {
4132 /* ACPI GBDC/SBDC bits */
4133 TP_ACPI_BLUETOOTH_HWPRESENT = 0x01, /* Bluetooth hw available */
4134 TP_ACPI_BLUETOOTH_RADIOSSW = 0x02, /* Bluetooth radio enabled */
153f8220 4135 TP_ACPI_BLUETOOTH_RESUMECTRL = 0x04, /* Bluetooth state at resume:
08fedfc9 4136 0 = disable, 1 = enable */
153f8220
HMH		 4137};
4138
4139enum {
4140 /* ACPI \BLTH commands */
4141 TP_ACPI_BLTH_GET_ULTRAPORT_ID = 0x00, /* Get Ultraport BT ID */
4142 TP_ACPI_BLTH_GET_PWR_ON_RESUME = 0x01, /* Get power-on-resume state */
4143 TP_ACPI_BLTH_PWR_ON_ON_RESUME = 0x02, /* Resume powered on */
4144 TP_ACPI_BLTH_PWR_OFF_ON_RESUME = 0x03, /* Resume powered off */
4145 TP_ACPI_BLTH_SAVE_STATE = 0x05, /* Save state for S4/S5 */
f74a27d4
HMH		 4146};
4147
bee4cd9b
HMH		 4148#define TPACPI_RFK_BLUETOOTH_SW_NAME "tpacpi_bluetooth_sw"
4149
19d337df 4150static int bluetooth_get_status(void)
07431ec8
HMH		 4151{
4152 int status;
4153
a73f3091
HMH		 4154#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
4155 if (dbg_bluetoothemul)
4156 return (tpacpi_bluetooth_emulstate) ?
19d337df 4157 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF;
a73f3091
HMH		 4158#endif
4159
07431ec8
HMH		 4160 if (!acpi_evalf(hkey_handle, &status, "GBDC", "d"))
4161 return -EIO;
4162
0e74dc26 4163 return ((status & TP_ACPI_BLUETOOTH_RADIOSSW) != 0) ?
19d337df 4164 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF;
07431ec8
HMH		 4165}
4166
19d337df 4167static int bluetooth_set_status(enum tpacpi_rfkill_state state)
0e74dc26
HMH		 4168{
4169 int status;
4170
bee4cd9b 4171 vdbg_printk(TPACPI_DBG_RFKILL,
19d337df
JB		 4172 "will attempt to %s bluetooth\n",
4173 (state == TPACPI_RFK_RADIO_ON) ? "enable" : "disable");
bee4cd9b 4174
a73f3091
HMH		 4175#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
4176 if (dbg_bluetoothemul) {
19d337df 4177 tpacpi_bluetooth_emulstate = (state == TPACPI_RFK_RADIO_ON);
a73f3091
HMH		 4178 return 0;
4179 }
4180#endif
4181
19d337df 4182 if (state == TPACPI_RFK_RADIO_ON)
08fedfc9
HMH		 4183 status = TP_ACPI_BLUETOOTH_RADIOSSW
4184 | TP_ACPI_BLUETOOTH_RESUMECTRL;
4185 else
4186 status = 0;
19d337df 4187
07431ec8
HMH		 4188 if (!acpi_evalf(hkey_handle, NULL, "SBDC", "vd", status))
4189 return -EIO;
4190
4191 return 0;
4192}
f74a27d4 4193
d3a6ade4
HMH		 4194/* sysfs bluetooth enable ---------------------------------------------- */
4195static ssize_t bluetooth_enable_show(struct device *dev,
4196 struct device_attribute *attr,
4197 char *buf)
4198{
19d337df
JB		 4199 return tpacpi_rfk_sysfs_enable_show(TPACPI_RFK_BLUETOOTH_SW_ID,
4200 attr, buf);
d3a6ade4
HMH		 4201}
4202
4203static ssize_t bluetooth_enable_store(struct device *dev,
4204 struct device_attribute *attr,
4205 const char *buf, size_t count)
4206{
19d337df
JB		 4207 return tpacpi_rfk_sysfs_enable_store(TPACPI_RFK_BLUETOOTH_SW_ID,
4208 attr, buf, count);
d3a6ade4
HMH		 4209}
4210
b4dd04ac 4211static DEVICE_ATTR_RW(bluetooth_enable);
d3a6ade4
HMH		 4212
4213/* --------------------------------------------------------------------- */
4214
4215static struct attribute *bluetooth_attributes[] = {
4216 &dev_attr_bluetooth_enable.attr,
4217 NULL
4218};
4219
4220static const struct attribute_group bluetooth_attr_group = {
d3a6ade4
HMH		 4221 .attrs = bluetooth_attributes,
4222};
4223
19d337df
JB		 4224static const struct tpacpi_rfk_ops bluetooth_tprfk_ops = {
4225 .get_status = bluetooth_get_status,
4226 .set_status = bluetooth_set_status,
4227};
0e74dc26 4228
90d9d3c7
HMH		 4229static void bluetooth_shutdown(void)
4230{
4231 /* Order firmware to save current state to NVRAM */
4232 if (!acpi_evalf(NULL, NULL, "\\BLTH", "vd",
4233 TP_ACPI_BLTH_SAVE_STATE))
0978e012 4234 pr_notice("failed to save bluetooth state to NVRAM\n");
bee4cd9b
HMH		 4235 else
4236 vdbg_printk(TPACPI_DBG_RFKILL,
1f01358c 4237 "bluetooth state saved to NVRAM\n");
90d9d3c7
HMH		 4238}
4239
07431ec8
HMH		 4240static void bluetooth_exit(void)
4241{
4242 sysfs_remove_group(&tpacpi_pdev->dev.kobj,
4243 &bluetooth_attr_group);
19d337df
JB		 4244
4245 tpacpi_destroy_rfkill(TPACPI_RFK_BLUETOOTH_SW_ID);
4246
4247 bluetooth_shutdown();
07431ec8
HMH		 4248}
4249
a5763f22 4250static int __init bluetooth_init(struct ibm_init_struct *iibm)
1da177e4 4251{
d3a6ade4 4252 int res;
d6fdd1e9
HMH		 4253 int status = 0;
4254
bee4cd9b
HMH		 4255 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL,
4256 "initializing bluetooth subdriver\n");
fe08bc4b 4257
e0c7dfe7 4258 TPACPI_ACPIHANDLE_INIT(hkey);
5fba344c 4259
78f81cc4
BD		 4260 /* bluetooth not supported on 570, 600e/x, 770e, 770x, A21e, A2xm/p,
4261 G4x, R30, R31, R40e, R50e, T20-22, X20-21 */
d8fd94d9 4262 tp_features.bluetooth = hkey_handle &&
d6fdd1e9
HMH		 4263 acpi_evalf(hkey_handle, &status, "GBDC", "qd");
4264
bee4cd9b
HMH		 4265 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL,
4266 "bluetooth is %s, status 0x%02x\n",
d6fdd1e9
HMH		 4267 str_supported(tp_features.bluetooth),
4268 status);
4269
a73f3091
HMH		 4270#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
4271 if (dbg_bluetoothemul) {
4272 tp_features.bluetooth = 1;
0978e012 4273 pr_info("bluetooth switch emulation enabled\n");
a73f3091
HMH		 4274 } else
4275#endif
3a872080
HMH		 4276 if (tp_features.bluetooth &&
4277 !(status & TP_ACPI_BLUETOOTH_HWPRESENT)) {
4278 /* no bluetooth hardware present in system */
4279 tp_features.bluetooth = 0;
bee4cd9b 4280 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL,
3a872080
HMH		 4281 "bluetooth hardware not installed\n");
4282 }
4283
0e74dc26
HMH		 4284 if (!tp_features.bluetooth)
4285 return 1;
4286
0e74dc26 4287 res = tpacpi_new_rfkill(TPACPI_RFK_BLUETOOTH_SW_ID,
19d337df 4288 &bluetooth_tprfk_ops,
0e74dc26 4289 RFKILL_TYPE_BLUETOOTH,
bee4cd9b 4290 TPACPI_RFK_BLUETOOTH_SW_NAME,
19d337df
JB		 4291 true);
4292 if (res)
4293 return res;
4294
4295 res = sysfs_create_group(&tpacpi_pdev->dev.kobj,
4296 &bluetooth_attr_group);
0e74dc26 4297 if (res) {
19d337df 4298 tpacpi_destroy_rfkill(TPACPI_RFK_BLUETOOTH_SW_ID);
0e74dc26 4299 return res;
d6fdd1e9 4300 }
fe08bc4b 4301
0e74dc26 4302 return 0;
1da177e4
LT		 4303}
4304
d3a6ade4 4305/* procfs -------------------------------------------------------------- */
887965e6 4306static int bluetooth_read(struct seq_file *m)
1da177e4 4307{
887965e6 4308 return tpacpi_rfk_procfs_read(TPACPI_RFK_BLUETOOTH_SW_ID, m);
1da177e4
LT		 4309}
4310
78f81cc4 4311static int bluetooth_write(char *buf)
1da177e4 4312{
19d337df 4313 return tpacpi_rfk_procfs_write(TPACPI_RFK_BLUETOOTH_SW_ID, buf);
1da177e4
LT		 4314}
4315
a5763f22
HMH		 4316static struct ibm_struct bluetooth_driver_data = {
4317 .name = "bluetooth",
4318 .read = bluetooth_read,
4319 .write = bluetooth_write,
d3a6ade4 4320 .exit = bluetooth_exit,
90d9d3c7 4321 .shutdown = bluetooth_shutdown,
a5763f22
HMH		 4322};
4323
56b6aeb0
HMH		 4324/*************************************************************************
4325 * Wan subdriver
4326 */
4327
f74a27d4
HMH		 4328enum {
4329 /* ACPI GWAN/SWAN bits */
4330 TP_ACPI_WANCARD_HWPRESENT = 0x01, /* Wan hw available */
4331 TP_ACPI_WANCARD_RADIOSSW = 0x02, /* Wan radio enabled */
153f8220 4332 TP_ACPI_WANCARD_RESUMECTRL = 0x04, /* Wan state at resume:
08fedfc9 4333 0 = disable, 1 = enable */
f74a27d4
HMH		 4334};
4335
bee4cd9b
HMH		 4336#define TPACPI_RFK_WWAN_SW_NAME "tpacpi_wwan_sw"
4337
19d337df 4338static int wan_get_status(void)
07431ec8
HMH		 4339{
4340 int status;
4341
a73f3091
HMH		 4342#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
4343 if (dbg_wwanemul)
4344 return (tpacpi_wwan_emulstate) ?
19d337df 4345 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF;
a73f3091
HMH		 4346#endif
4347
07431ec8
HMH		 4348 if (!acpi_evalf(hkey_handle, &status, "GWAN", "d"))
4349 return -EIO;
4350
0e74dc26 4351 return ((status & TP_ACPI_WANCARD_RADIOSSW) != 0) ?
19d337df 4352 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF;
0e74dc26
HMH		 4353}
4354
19d337df 4355static int wan_set_status(enum tpacpi_rfkill_state state)
07431ec8
HMH		 4356{
4357 int status;
4358
bee4cd9b 4359 vdbg_printk(TPACPI_DBG_RFKILL,
19d337df
JB		 4360 "will attempt to %s wwan\n",
4361 (state == TPACPI_RFK_RADIO_ON) ? "enable" : "disable");
bee4cd9b 4362
a73f3091
HMH		 4363#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
4364 if (dbg_wwanemul) {
19d337df 4365 tpacpi_wwan_emulstate = (state == TPACPI_RFK_RADIO_ON);
a73f3091
HMH		 4366 return 0;
4367 }
4368#endif
4369
19d337df 4370 if (state == TPACPI_RFK_RADIO_ON)
08fedfc9
HMH		 4371 status = TP_ACPI_WANCARD_RADIOSSW
4372 | TP_ACPI_WANCARD_RESUMECTRL;
4373 else
4374 status = 0;
19d337df 4375
07431ec8
HMH		 4376 if (!acpi_evalf(hkey_handle, NULL, "SWAN", "vd", status))
4377 return -EIO;
4378
4379 return 0;
4380}
f74a27d4 4381
d3a6ade4
HMH		 4382/* sysfs wan enable ---------------------------------------------------- */
4383static ssize_t wan_enable_show(struct device *dev,
4384 struct device_attribute *attr,
4385 char *buf)
4386{
19d337df
JB		 4387 return tpacpi_rfk_sysfs_enable_show(TPACPI_RFK_WWAN_SW_ID,
4388 attr, buf);
d3a6ade4
HMH		 4389}
4390
4391static ssize_t wan_enable_store(struct device *dev,
4392 struct device_attribute *attr,
4393 const char *buf, size_t count)
4394{
19d337df
JB		 4395 return tpacpi_rfk_sysfs_enable_store(TPACPI_RFK_WWAN_SW_ID,
4396 attr, buf, count);
d3a6ade4
HMH		 4397}
4398
5fb73bc2
BM		 4399static DEVICE_ATTR(wwan_enable, S_IWUSR | S_IRUGO,
4400 wan_enable_show, wan_enable_store);
d3a6ade4
HMH		 4401
4402/* --------------------------------------------------------------------- */
4403
4404static struct attribute *wan_attributes[] = {
5fb73bc2 4405 &dev_attr_wwan_enable.attr,
d3a6ade4
HMH		 4406 NULL
4407};
4408
4409static const struct attribute_group wan_attr_group = {
d3a6ade4
HMH		 4410 .attrs = wan_attributes,
4411};
4412
19d337df
JB		 4413static const struct tpacpi_rfk_ops wan_tprfk_ops = {
4414 .get_status = wan_get_status,
4415 .set_status = wan_set_status,
4416};
0e74dc26 4417
90d9d3c7
HMH		 4418static void wan_shutdown(void)
4419{
4420 /* Order firmware to save current state to NVRAM */
4421 if (!acpi_evalf(NULL, NULL, "\\WGSV", "vd",
4422 TP_ACPI_WGSV_SAVE_STATE))
0978e012 4423 pr_notice("failed to save WWAN state to NVRAM\n");
bee4cd9b
HMH		 4424 else
4425 vdbg_printk(TPACPI_DBG_RFKILL,
4426 "WWAN state saved to NVRAM\n");
90d9d3c7
HMH		 4427}
4428
07431ec8
HMH		 4429static void wan_exit(void)
4430{
4431 sysfs_remove_group(&tpacpi_pdev->dev.kobj,
4432 &wan_attr_group);
19d337df
JB		 4433
4434 tpacpi_destroy_rfkill(TPACPI_RFK_WWAN_SW_ID);
4435
4436 wan_shutdown();
07431ec8
HMH		 4437}
4438
a5763f22 4439static int __init wan_init(struct ibm_init_struct *iibm)
42adb53c 4440{
d3a6ade4 4441 int res;
d6fdd1e9
HMH		 4442 int status = 0;
4443
bee4cd9b
HMH		 4444 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL,
4445 "initializing wan subdriver\n");
fe08bc4b 4446
e0c7dfe7 4447 TPACPI_ACPIHANDLE_INIT(hkey);
5fba344c 4448
d8fd94d9 4449 tp_features.wan = hkey_handle &&
d6fdd1e9
HMH		 4450 acpi_evalf(hkey_handle, &status, "GWAN", "qd");
4451
bee4cd9b
HMH		 4452 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL,
4453 "wan is %s, status 0x%02x\n",
d6fdd1e9
HMH		 4454 str_supported(tp_features.wan),
4455 status);
4456
a73f3091
HMH		 4457#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
4458 if (dbg_wwanemul) {
4459 tp_features.wan = 1;
0978e012 4460 pr_info("wwan switch emulation enabled\n");
a73f3091
HMH		 4461 } else
4462#endif
3a872080
HMH		 4463 if (tp_features.wan &&
4464 !(status & TP_ACPI_WANCARD_HWPRESENT)) {
4465 /* no wan hardware present in system */
4466 tp_features.wan = 0;
bee4cd9b 4467 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL,
3a872080
HMH		 4468 "wan hardware not installed\n");
4469 }
4470
0e74dc26
HMH		 4471 if (!tp_features.wan)
4472 return 1;
4473
0e74dc26 4474 res = tpacpi_new_rfkill(TPACPI_RFK_WWAN_SW_ID,
19d337df 4475 &wan_tprfk_ops,
0e74dc26 4476 RFKILL_TYPE_WWAN,
bee4cd9b 4477 TPACPI_RFK_WWAN_SW_NAME,
19d337df
JB		 4478 true);
4479 if (res)
4480 return res;
4481
4482 res = sysfs_create_group(&tpacpi_pdev->dev.kobj,
4483 &wan_attr_group);
4484
0e74dc26 4485 if (res) {
19d337df 4486 tpacpi_destroy_rfkill(TPACPI_RFK_WWAN_SW_ID);
0e74dc26 4487 return res;
d6fdd1e9 4488 }
fe08bc4b 4489
0e74dc26 4490 return 0;
42adb53c
JF		 4491}
4492
d3a6ade4 4493/* procfs -------------------------------------------------------------- */
887965e6 4494static int wan_read(struct seq_file *m)
42adb53c 4495{
887965e6 4496 return tpacpi_rfk_procfs_read(TPACPI_RFK_WWAN_SW_ID, m);
42adb53c
JF		 4497}
4498
4499static int wan_write(char *buf)
4500{
19d337df 4501 return tpacpi_rfk_procfs_write(TPACPI_RFK_WWAN_SW_ID, buf);
42adb53c
JF		 4502}
4503
a5763f22
HMH		 4504static struct ibm_struct wan_driver_data = {
4505 .name = "wan",
4506 .read = wan_read,
4507 .write = wan_write,
d3a6ade4 4508 .exit = wan_exit,
90d9d3c7 4509 .shutdown = wan_shutdown,
a5763f22
HMH		 4510};
4511
0045c0aa
HMH		 4512/*************************************************************************
4513 * UWB subdriver
4514 */
4515
4516enum {
4517 /* ACPI GUWB/SUWB bits */
4518 TP_ACPI_UWB_HWPRESENT = 0x01, /* UWB hw available */
4519 TP_ACPI_UWB_RADIOSSW = 0x02, /* UWB radio enabled */
4520};
4521
bee4cd9b
HMH		 4522#define TPACPI_RFK_UWB_SW_NAME "tpacpi_uwb_sw"
4523
19d337df 4524static int uwb_get_status(void)
0045c0aa
HMH		 4525{
4526 int status;
4527
0045c0aa
HMH		 4528#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
4529 if (dbg_uwbemul)
4530 return (tpacpi_uwb_emulstate) ?
19d337df 4531 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF;
0045c0aa
HMH		 4532#endif
4533
4534 if (!acpi_evalf(hkey_handle, &status, "GUWB", "d"))
4535 return -EIO;
4536
4537 return ((status & TP_ACPI_UWB_RADIOSSW) != 0) ?
19d337df 4538 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF;
0045c0aa
HMH		 4539}
4540
19d337df 4541static int uwb_set_status(enum tpacpi_rfkill_state state)
0045c0aa
HMH		 4542{
4543 int status;
4544
bee4cd9b 4545 vdbg_printk(TPACPI_DBG_RFKILL,
19d337df
JB		 4546 "will attempt to %s UWB\n",
4547 (state == TPACPI_RFK_RADIO_ON) ? "enable" : "disable");
bee4cd9b 4548
0045c0aa
HMH		 4549#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
4550 if (dbg_uwbemul) {
19d337df 4551 tpacpi_uwb_emulstate = (state == TPACPI_RFK_RADIO_ON);
0045c0aa
HMH		 4552 return 0;
4553 }
4554#endif
4555
19d337df
JB		 4556 if (state == TPACPI_RFK_RADIO_ON)
4557 status = TP_ACPI_UWB_RADIOSSW;
4558 else
4559 status = 0;
4560
0045c0aa
HMH		 4561 if (!acpi_evalf(hkey_handle, NULL, "SUWB", "vd", status))
4562 return -EIO;
4563
0045c0aa
HMH		 4564 return 0;
4565}
4566
4567/* --------------------------------------------------------------------- */
4568
19d337df
JB		 4569static const struct tpacpi_rfk_ops uwb_tprfk_ops = {
4570 .get_status = uwb_get_status,
4571 .set_status = uwb_set_status,
4572};
0045c0aa
HMH		 4573
4574static void uwb_exit(void)
4575{
19d337df 4576 tpacpi_destroy_rfkill(TPACPI_RFK_UWB_SW_ID);
0045c0aa
HMH		 4577}
4578
4579static int __init uwb_init(struct ibm_init_struct *iibm)
4580{
4581 int res;
4582 int status = 0;
4583
bee4cd9b
HMH		 4584 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL,
4585 "initializing uwb subdriver\n");
0045c0aa
HMH		 4586
4587 TPACPI_ACPIHANDLE_INIT(hkey);
4588
4589 tp_features.uwb = hkey_handle &&
4590 acpi_evalf(hkey_handle, &status, "GUWB", "qd");
4591
bee4cd9b
HMH		 4592 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL,
4593 "uwb is %s, status 0x%02x\n",
0045c0aa
HMH		 4594 str_supported(tp_features.uwb),
4595 status);
4596
4597#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
4598 if (dbg_uwbemul) {
4599 tp_features.uwb = 1;
0978e012 4600 pr_info("uwb switch emulation enabled\n");
0045c0aa
HMH		 4601 } else
4602#endif
4603 if (tp_features.uwb &&
4604 !(status & TP_ACPI_UWB_HWPRESENT)) {
4605 /* no uwb hardware present in system */
4606 tp_features.uwb = 0;
4607 dbg_printk(TPACPI_DBG_INIT,
4608 "uwb hardware not installed\n");
4609 }
4610
4611 if (!tp_features.uwb)
4612 return 1;
4613
4614 res = tpacpi_new_rfkill(TPACPI_RFK_UWB_SW_ID,
19d337df 4615 &uwb_tprfk_ops,
0045c0aa 4616 RFKILL_TYPE_UWB,
bee4cd9b 4617 TPACPI_RFK_UWB_SW_NAME,
19d337df 4618 false);
0045c0aa
HMH		 4619 return res;
4620}
4621
4622static struct ibm_struct uwb_driver_data = {
4623 .name = "uwb",
4624 .exit = uwb_exit,
4625 .flags.experimental = 1,
4626};
4627
56b6aeb0
HMH		 4628/*************************************************************************
4629 * Video subdriver
4630 */
4631
d7c1d17d
HMH		 4632#ifdef CONFIG_THINKPAD_ACPI_VIDEO
4633
f74a27d4
HMH		 4634enum video_access_mode {
4635 TPACPI_VIDEO_NONE = 0,
4636 TPACPI_VIDEO_570, /* 570 */
4637 TPACPI_VIDEO_770, /* 600e/x, 770e, 770x */
4638 TPACPI_VIDEO_NEW, /* all others */
4639};
4640
4641enum { /* video status flags, based on VIDEO_570 */
4642 TP_ACPI_VIDEO_S_LCD = 0x01, /* LCD output enabled */
4643 TP_ACPI_VIDEO_S_CRT = 0x02, /* CRT output enabled */
4644 TP_ACPI_VIDEO_S_DVI = 0x08, /* DVI output enabled */
4645};
4646
4647enum { /* TPACPI_VIDEO_570 constants */
4648 TP_ACPI_VIDEO_570_PHSCMD = 0x87, /* unknown magic constant :( */
4649 TP_ACPI_VIDEO_570_PHSMASK = 0x03, /* PHS bits that map to
4650 * video_status_flags */
4651 TP_ACPI_VIDEO_570_PHS2CMD = 0x8b, /* unknown magic constant :( */
4652 TP_ACPI_VIDEO_570_PHS2SET = 0x80, /* unknown magic constant :( */
4653};
4654
9a8e1738
HMH		 4655static enum video_access_mode video_supported;
4656static int video_orig_autosw;
78f81cc4 4657
f74a27d4
HMH		 4658static int video_autosw_get(void);
4659static int video_autosw_set(int enable);
4660
112a6ee0
JP		 4661TPACPI_HANDLE(vid, root,
4662 "\\_SB.PCI.AGP.VGA", /* 570 */
4663 "\\_SB.PCI0.AGP0.VID0", /* 600e/x, 770x */
4664 "\\_SB.PCI0.VID0", /* 770e */
4665 "\\_SB.PCI0.VID", /* A21e, G4x, R50e, X30, X40 */
4666 "\\_SB.PCI0.AGP.VGA", /* X100e and a few others */
4667 "\\_SB.PCI0.AGP.VID", /* all others */
4668 ); /* R30, R31 */
4669
e0c7dfe7 4670TPACPI_HANDLE(vid2, root, "\\_SB.PCI0.AGPB.VID"); /* G41 */
56b6aeb0 4671
a5763f22 4672static int __init video_init(struct ibm_init_struct *iibm)
1da177e4 4673{
78f81cc4
BD		 4674 int ivga;
4675
fe08bc4b
HMH		 4676 vdbg_printk(TPACPI_DBG_INIT, "initializing video subdriver\n");
4677
e0c7dfe7 4678 TPACPI_ACPIHANDLE_INIT(vid);
e28393c0
HMH		 4679 if (tpacpi_is_ibm())
4680 TPACPI_ACPIHANDLE_INIT(vid2);
5fba344c 4681
78f81cc4
BD		 4682 if (vid2_handle && acpi_evalf(NULL, &ivga, "\\IVGA", "d") && ivga)
4683 /* G41, assume IVGA doesn't change */
4684 vid_handle = vid2_handle;
4685
4686 if (!vid_handle)
4687 /* video switching not supported on R30, R31 */
efa27145 4688 video_supported = TPACPI_VIDEO_NONE;
e28393c0
HMH		 4689 else if (tpacpi_is_ibm() &&
4690 acpi_evalf(vid_handle, &video_orig_autosw, "SWIT", "qd"))
78f81cc4 4691 /* 570 */
efa27145 4692 video_supported = TPACPI_VIDEO_570;
e28393c0
HMH		 4693 else if (tpacpi_is_ibm() &&
4694 acpi_evalf(vid_handle, &video_orig_autosw, "^VADL", "qd"))
78f81cc4 4695 /* 600e/x, 770e, 770x */
efa27145 4696 video_supported = TPACPI_VIDEO_770;
78f81cc4
BD		 4697 else
4698 /* all others */
efa27145 4699 video_supported = TPACPI_VIDEO_NEW;
1da177e4 4700
fe08bc4b
HMH		 4701 vdbg_printk(TPACPI_DBG_INIT, "video is %s, mode %d\n",
4702 str_supported(video_supported != TPACPI_VIDEO_NONE),
4703 video_supported);
4704
72a979f0 4705 return (video_supported != TPACPI_VIDEO_NONE) ? 0 : 1;
1da177e4
LT		 4706}
4707
56b6aeb0
HMH		 4708static void video_exit(void)
4709{
83f34724
HMH		 4710 dbg_printk(TPACPI_DBG_EXIT,
4711 "restoring original video autoswitch mode\n");
4712 if (video_autosw_set(video_orig_autosw))
0978e012 4713 pr_err("error while trying to restore original "
83f34724 4714 "video autoswitch mode\n");
56b6aeb0
HMH		 4715}
4716
83f34724 4717static int video_outputsw_get(void)
1da177e4
LT		 4718{
4719 int status = 0;
4720 int i;
4721
83f34724
HMH		 4722 switch (video_supported) {
4723 case TPACPI_VIDEO_570:
4724 if (!acpi_evalf(NULL, &i, "\\_SB.PHS", "dd",
4725 TP_ACPI_VIDEO_570_PHSCMD))
4726 return -EIO;
4727 status = i & TP_ACPI_VIDEO_570_PHSMASK;
4728 break;
4729 case TPACPI_VIDEO_770:
4730 if (!acpi_evalf(NULL, &i, "\\VCDL", "d"))
4731 return -EIO;
4732 if (i)
4733 status |= TP_ACPI_VIDEO_S_LCD;
4734 if (!acpi_evalf(NULL, &i, "\\VCDC", "d"))
4735 return -EIO;
4736 if (i)
4737 status |= TP_ACPI_VIDEO_S_CRT;
4738 break;
4739 case TPACPI_VIDEO_NEW:
4740 if (!acpi_evalf(NULL, NULL, "\\VUPS", "vd", 1) ||
4741 !acpi_evalf(NULL, &i, "\\VCDC", "d"))
4742 return -EIO;
4743 if (i)
4744 status |= TP_ACPI_VIDEO_S_CRT;
4745
4746 if (!acpi_evalf(NULL, NULL, "\\VUPS", "vd", 0) ||
4747 !acpi_evalf(NULL, &i, "\\VCDL", "d"))
4748 return -EIO;
4749 if (i)
4750 status |= TP_ACPI_VIDEO_S_LCD;
4751 if (!acpi_evalf(NULL, &i, "\\VCDD", "d"))
4752 return -EIO;
4753 if (i)
4754 status |= TP_ACPI_VIDEO_S_DVI;
4755 break;
4756 default:
4757 return -ENOSYS;
78f81cc4
BD		 4758 }
4759
4760 return status;
4761}
1da177e4 4762
83f34724 4763static int video_outputsw_set(int status)
78f81cc4 4764{
83f34724
HMH		 4765 int autosw;
4766 int res = 0;
4767
4768 switch (video_supported) {
4769 case TPACPI_VIDEO_570:
4770 res = acpi_evalf(NULL, NULL,
4771 "\\_SB.PHS2", "vdd",
4772 TP_ACPI_VIDEO_570_PHS2CMD,
4773 status | TP_ACPI_VIDEO_570_PHS2SET);
4774 break;
4775 case TPACPI_VIDEO_770:
4776 autosw = video_autosw_get();
4777 if (autosw < 0)
4778 return autosw;
1da177e4 4779
83f34724
HMH		 4780 res = video_autosw_set(1);
4781 if (res)
4782 return res;
4783 res = acpi_evalf(vid_handle, NULL,
4784 "ASWT", "vdd", status * 0x100, 0);
4785 if (!autosw && video_autosw_set(autosw)) {
0978e012 4786 pr_err("video auto-switch left enabled due to error\n");
83f34724
HMH		 4787 return -EIO;
4788 }
4789 break;
4790 case TPACPI_VIDEO_NEW:
4791 res = acpi_evalf(NULL, NULL, "\\VUPS", "vd", 0x80) &&
35ff8b9f 4792 acpi_evalf(NULL, NULL, "\\VSDS", "vdd", status, 1);
83f34724
HMH		 4793 break;
4794 default:
4795 return -ENOSYS;
4796 }
1da177e4 4797
72a979f0 4798 return (res) ? 0 : -EIO;
1da177e4
LT		 4799}
4800
83f34724 4801static int video_autosw_get(void)
78f81cc4 4802{
83f34724 4803 int autosw = 0;
78f81cc4 4804
83f34724
HMH		 4805 switch (video_supported) {
4806 case TPACPI_VIDEO_570:
4807 if (!acpi_evalf(vid_handle, &autosw, "SWIT", "d"))
4808 return -EIO;
4809 break;
4810 case TPACPI_VIDEO_770:
4811 case TPACPI_VIDEO_NEW:
4812 if (!acpi_evalf(vid_handle, &autosw, "^VDEE", "d"))
4813 return -EIO;
4814 break;
4815 default:
4816 return -ENOSYS;
4817 }
78f81cc4 4818
83f34724 4819 return autosw & 1;
78f81cc4
BD		 4820}
4821
83f34724 4822static int video_autosw_set(int enable)
78f81cc4 4823{
72a979f0 4824 if (!acpi_evalf(vid_handle, NULL, "_DOS", "vd", (enable) ? 1 : 0))
83f34724
HMH		 4825 return -EIO;
4826 return 0;
78f81cc4
BD		 4827}
4828
83f34724 4829static int video_outputsw_cycle(void)
78f81cc4 4830{
83f34724
HMH		 4831 int autosw = video_autosw_get();
4832 int res;
78f81cc4 4833
83f34724
HMH		 4834 if (autosw < 0)
4835 return autosw;
78f81cc4 4836
83f34724
HMH		 4837 switch (video_supported) {
4838 case TPACPI_VIDEO_570:
4839 res = video_autosw_set(1);
4840 if (res)
4841 return res;
4842 res = acpi_evalf(ec_handle, NULL, "_Q16", "v");
4843 break;
4844 case TPACPI_VIDEO_770:
4845 case TPACPI_VIDEO_NEW:
4846 res = video_autosw_set(1);
4847 if (res)
4848 return res;
4849 res = acpi_evalf(vid_handle, NULL, "VSWT", "v");
4850 break;
4851 default:
4852 return -ENOSYS;
4853 }
4854 if (!autosw && video_autosw_set(autosw)) {
0978e012 4855 pr_err("video auto-switch left enabled due to error\n");
83f34724 4856 return -EIO;
78f81cc4
BD		 4857 }
4858
72a979f0 4859 return (res) ? 0 : -EIO;
83f34724
HMH		 4860}
4861
4862static int video_expand_toggle(void)
4863{
4864 switch (video_supported) {
4865 case TPACPI_VIDEO_570:
72a979f0 4866 return acpi_evalf(ec_handle, NULL, "_Q17", "v") ?
83f34724
HMH		 4867 0 : -EIO;
4868 case TPACPI_VIDEO_770:
72a979f0 4869 return acpi_evalf(vid_handle, NULL, "VEXP", "v") ?
83f34724
HMH		 4870 0 : -EIO;
4871 case TPACPI_VIDEO_NEW:
72a979f0 4872 return acpi_evalf(NULL, NULL, "\\VEXP", "v") ?
83f34724
HMH		 4873 0 : -EIO;
4874 default:
4875 return -ENOSYS;
4876 }
4877 /* not reached */
78f81cc4
BD		 4878}
4879
887965e6 4880static int video_read(struct seq_file *m)
56b6aeb0 4881{
83f34724 4882 int status, autosw;
56b6aeb0 4883
83f34724 4884 if (video_supported == TPACPI_VIDEO_NONE) {
887965e6
AD		 4885 seq_printf(m, "status:\t\tnot supported\n");
4886 return 0;
56b6aeb0
HMH		 4887 }
4888
b525c06c
HMH		 4889 /* Even reads can crash X.org, so... */
4890 if (!capable(CAP_SYS_ADMIN))
4891 return -EPERM;
4892
83f34724
HMH		 4893 status = video_outputsw_get();
4894 if (status < 0)
4895 return status;
4896
4897 autosw = video_autosw_get();
4898 if (autosw < 0)
4899 return autosw;
4900
887965e6
AD		 4901 seq_printf(m, "status:\t\tsupported\n");
4902 seq_printf(m, "lcd:\t\t%s\n", enabled(status, 0));
4903 seq_printf(m, "crt:\t\t%s\n", enabled(status, 1));
efa27145 4904 if (video_supported == TPACPI_VIDEO_NEW)
887965e6
AD		 4905 seq_printf(m, "dvi:\t\t%s\n", enabled(status, 3));
4906 seq_printf(m, "auto:\t\t%s\n", enabled(autosw, 0));
4907 seq_printf(m, "commands:\tlcd_enable, lcd_disable\n");
4908 seq_printf(m, "commands:\tcrt_enable, crt_disable\n");
efa27145 4909 if (video_supported == TPACPI_VIDEO_NEW)
887965e6
AD		 4910 seq_printf(m, "commands:\tdvi_enable, dvi_disable\n");
4911 seq_printf(m, "commands:\tauto_enable, auto_disable\n");
4912 seq_printf(m, "commands:\tvideo_switch, expand_toggle\n");
56b6aeb0 4913
887965e6 4914 return 0;
56b6aeb0
HMH		 4915}
4916
78f81cc4 4917static int video_write(char *buf)
1da177e4
LT		 4918{
4919 char *cmd;
4920 int enable, disable, status;
83f34724 4921 int res;
1da177e4 4922
83f34724 4923 if (video_supported == TPACPI_VIDEO_NONE)
78f81cc4
BD		 4924 return -ENODEV;
4925
b525c06c
HMH		 4926 /* Even reads can crash X.org, let alone writes... */
4927 if (!capable(CAP_SYS_ADMIN))
4928 return -EPERM;
4929
83f34724
HMH		 4930 enable = 0;
4931 disable = 0;
1da177e4
LT		 4932
4933 while ((cmd = next_cmd(&buf))) {
4934 if (strlencmp(cmd, "lcd_enable") == 0) {
83f34724 4935 enable |= TP_ACPI_VIDEO_S_LCD;
1da177e4 4936 } else if (strlencmp(cmd, "lcd_disable") == 0) {
83f34724 4937 disable |= TP_ACPI_VIDEO_S_LCD;
1da177e4 4938 } else if (strlencmp(cmd, "crt_enable") == 0) {
83f34724 4939 enable |= TP_ACPI_VIDEO_S_CRT;
1da177e4 4940 } else if (strlencmp(cmd, "crt_disable") == 0) {
83f34724 4941 disable |= TP_ACPI_VIDEO_S_CRT;
efa27145 4942 } else if (video_supported == TPACPI_VIDEO_NEW &&
78f81cc4 4943 strlencmp(cmd, "dvi_enable") == 0) {
83f34724 4944 enable |= TP_ACPI_VIDEO_S_DVI;
efa27145 4945 } else if (video_supported == TPACPI_VIDEO_NEW &&
78f81cc4 4946 strlencmp(cmd, "dvi_disable") == 0) {
83f34724 4947 disable |= TP_ACPI_VIDEO_S_DVI;
1da177e4 4948 } else if (strlencmp(cmd, "auto_enable") == 0) {
83f34724
HMH		 4949 res = video_autosw_set(1);
4950 if (res)
4951 return res;
1da177e4 4952 } else if (strlencmp(cmd, "auto_disable") == 0) {
83f34724
HMH		 4953 res = video_autosw_set(0);
4954 if (res)
4955 return res;
1da177e4 4956 } else if (strlencmp(cmd, "video_switch") == 0) {
83f34724
HMH		 4957 res = video_outputsw_cycle();
4958 if (res)
4959 return res;
1da177e4 4960 } else if (strlencmp(cmd, "expand_toggle") == 0) {
83f34724
HMH		 4961 res = video_expand_toggle();
4962 if (res)
4963 return res;
1da177e4
LT		 4964 } else
4965 return -EINVAL;
4966 }
4967
4968 if (enable || disable) {
83f34724
HMH		 4969 status = video_outputsw_get();
4970 if (status < 0)
4971 return status;
4972 res = video_outputsw_set((status & ~disable) | enable);
4973 if (res)
4974 return res;
1da177e4
LT		 4975 }
4976
4977 return 0;
4978}
4979
a5763f22
HMH		 4980static struct ibm_struct video_driver_data = {
4981 .name = "video",
4982 .read = video_read,
4983 .write = video_write,
4984 .exit = video_exit,
4985};
4986
d7c1d17d
HMH		 4987#endif /* CONFIG_THINKPAD_ACPI_VIDEO */
4988
bb28f3d5
PR		 4989/*************************************************************************
4990 * Keyboard backlight subdriver
4991 */
4992
4993static int kbdlight_set_level(int level)
4994{
4995 if (!hkey_handle)
4996 return -ENXIO;
4997
4998 if (!acpi_evalf(hkey_handle, NULL, "MLCS", "dd", level))
4999 return -EIO;
5000
5001 return 0;
5002}
5003
afcedebc
MTT		 5004static int kbdlight_set_level_and_update(int level);
5005
bb28f3d5
PR		 5006static int kbdlight_get_level(void)
5007{
5008 int status = 0;
5009
5010 if (!hkey_handle)
5011 return -ENXIO;
5012
5013 if (!acpi_evalf(hkey_handle, &status, "MLCG", "dd", 0))
5014 return -EIO;
5015
5016 if (status < 0)
5017 return status;
5018
5019 return status & 0x3;
5020}
5021
5022static bool kbdlight_is_supported(void)
5023{
5024 int status = 0;
5025
5026 if (!hkey_handle)
5027 return false;
5028
5029 if (!acpi_has_method(hkey_handle, "MLCG")) {
5030 vdbg_printk(TPACPI_DBG_INIT, "kbdlight MLCG is unavailable\n");
5031 return false;
5032 }
5033
5034 if (!acpi_evalf(hkey_handle, &status, "MLCG", "qdd", 0)) {
5035 vdbg_printk(TPACPI_DBG_INIT, "kbdlight MLCG failed\n");
5036 return false;
5037 }
5038
5039 if (status < 0) {
5040 vdbg_printk(TPACPI_DBG_INIT, "kbdlight MLCG err: %d\n", status);
5041 return false;
5042 }
5043
5044 vdbg_printk(TPACPI_DBG_INIT, "kbdlight MLCG returned 0x%x\n", status);
5045 /*
5046 * Guessed test for keyboard backlight:
5047 *
5048 * Machines with backlight keyboard return:
5049 * b010100000010000000XX - ThinkPad X1 Carbon 3rd
5050 * b110100010010000000XX - ThinkPad x230
5051 * b010100000010000000XX - ThinkPad x240
5052 * b010100000010000000XX - ThinkPad W541
5053 * (XX is current backlight level)
5054 *
5055 * Machines without backlight keyboard return:
5056 * b10100001000000000000 - ThinkPad x230
5057 * b10110001000000000000 - ThinkPad E430
5058 * b00000000000000000000 - ThinkPad E450
5059 *
5060 * Candidate BITs for detection test (XOR):
5061 * b01000000001000000000
5062 * ^
5063 */
5064 return status & BIT(9);
5065}
5066
5067static void kbdlight_set_worker(struct work_struct *work)
5068{
5069 struct tpacpi_led_classdev *data =
5070 container_of(work, struct tpacpi_led_classdev, work);
5071
5072 if (likely(tpacpi_lifecycle == TPACPI_LIFE_RUNNING))
afcedebc 5073 kbdlight_set_level_and_update(data->new_state);
bb28f3d5
PR		 5074}
5075
5076static void kbdlight_sysfs_set(struct led_classdev *led_cdev,
5077 enum led_brightness brightness)
5078{
5079 struct tpacpi_led_classdev *data =
5080 container_of(led_cdev,
5081 struct tpacpi_led_classdev,
5082 led_classdev);
5083 data->new_state = brightness;
5084 queue_work(tpacpi_wq, &data->work);
5085}
5086
5087static enum led_brightness kbdlight_sysfs_get(struct led_classdev *led_cdev)
5088{
5089 int level;
5090
5091 level = kbdlight_get_level();
5092 if (level < 0)
5093 return 0;
5094
5095 return level;
5096}
5097
5098static struct tpacpi_led_classdev tpacpi_led_kbdlight = {
5099 .led_classdev = {
5100 .name = "tpacpi::kbd_backlight",
5101 .max_brightness = 2,
5102 .brightness_set = &kbdlight_sysfs_set,
5103 .brightness_get = &kbdlight_sysfs_get,
bb28f3d5
PR		 5104 }
5105};
5106
5107static int __init kbdlight_init(struct ibm_init_struct *iibm)
5108{
5109 int rc;
5110
5111 vdbg_printk(TPACPI_DBG_INIT, "initializing kbdlight subdriver\n");
5112
5113 TPACPI_ACPIHANDLE_INIT(hkey);
5114 INIT_WORK(&tpacpi_led_kbdlight.work, kbdlight_set_worker);
5115
5116 if (!kbdlight_is_supported()) {
5117 tp_features.kbdlight = 0;
5118 vdbg_printk(TPACPI_DBG_INIT, "kbdlight is unsupported\n");
5119 return 1;
5120 }
5121
5122 tp_features.kbdlight = 1;
5123
5124 rc = led_classdev_register(&tpacpi_pdev->dev,
5125 &tpacpi_led_kbdlight.led_classdev);
5126 if (rc < 0) {
5127 tp_features.kbdlight = 0;
5128 return rc;
5129 }
5130
5131 return 0;
5132}
5133
5134static void kbdlight_exit(void)
5135{
5136 if (tp_features.kbdlight)
5137 led_classdev_unregister(&tpacpi_led_kbdlight.led_classdev);
5138 flush_workqueue(tpacpi_wq);
5139}
5140
afcedebc
MTT		 5141static int kbdlight_set_level_and_update(int level)
5142{
5143 int ret;
5144 struct led_classdev *led_cdev;
5145
5146 ret = kbdlight_set_level(level);
5147 led_cdev = &tpacpi_led_kbdlight.led_classdev;
5148
5149 if (ret == 0 && !(led_cdev->flags & LED_SUSPENDED))
5150 led_cdev->brightness = level;
5151
5152 return ret;
5153}
5154
bb28f3d5
PR		 5155static int kbdlight_read(struct seq_file *m)
5156{
5157 int level;
5158
5159 if (!tp_features.kbdlight) {
5160 seq_printf(m, "status:\t\tnot supported\n");
5161 } else {
5162 level = kbdlight_get_level();
5163 if (level < 0)
5164 seq_printf(m, "status:\t\terror %d\n", level);
5165 else
5166 seq_printf(m, "status:\t\t%d\n", level);
5167 seq_printf(m, "commands:\t0, 1, 2\n");
5168 }
5169
5170 return 0;
5171}
5172
5173static int kbdlight_write(char *buf)
5174{
5175 char *cmd;
5176 int level = -1;
5177
5178 if (!tp_features.kbdlight)
5179 return -ENODEV;
5180
5181 while ((cmd = next_cmd(&buf))) {
5182 if (strlencmp(cmd, "0") == 0)
5183 level = 0;
5184 else if (strlencmp(cmd, "1") == 0)
5185 level = 1;
5186 else if (strlencmp(cmd, "2") == 0)
5187 level = 2;
5188 else
5189 return -EINVAL;
5190 }
5191
5192 if (level == -1)
5193 return -EINVAL;
5194
afcedebc
MTT		 5195 return kbdlight_set_level_and_update(level);
5196}
5197
5198static void kbdlight_suspend(void)
5199{
5200 struct led_classdev *led_cdev;
5201
5202 if (!tp_features.kbdlight)
5203 return;
5204
5205 led_cdev = &tpacpi_led_kbdlight.led_classdev;
5206 led_update_brightness(led_cdev);
5207 led_classdev_suspend(led_cdev);
5208}
5209
5210static void kbdlight_resume(void)
5211{
5212 if (!tp_features.kbdlight)
5213 return;
5214
5215 led_classdev_resume(&tpacpi_led_kbdlight.led_classdev);
bb28f3d5
PR		 5216}
5217
5218static struct ibm_struct kbdlight_driver_data = {
5219 .name = "kbdlight",
5220 .read = kbdlight_read,
5221 .write = kbdlight_write,
afcedebc
MTT		 5222 .suspend = kbdlight_suspend,
5223 .resume = kbdlight_resume,
bb28f3d5
PR		 5224 .exit = kbdlight_exit,
5225};
5226
56b6aeb0
HMH		 5227/*************************************************************************
5228 * Light (thinklight) subdriver
5229 */
1da177e4 5230
e0c7dfe7
HMH		 5231TPACPI_HANDLE(lght, root, "\\LGHT"); /* A21e, A2xm/p, T20-22, X20-21 */
5232TPACPI_HANDLE(ledb, ec, "LEDB"); /* G4x */
56b6aeb0 5233
4fa6811b
HMH		 5234static int light_get_status(void)
5235{
5236 int status = 0;
5237
5238 if (tp_features.light_status) {
5239 if (!acpi_evalf(ec_handle, &status, "KBLT", "d"))
5240 return -EIO;
5241 return (!!status);
5242 }
5243
5244 return -ENXIO;
5245}
5246
5247static int light_set_status(int status)
5248{
5249 int rc;
5250
5251 if (tp_features.light) {
5252 if (cmos_handle) {
5253 rc = acpi_evalf(cmos_handle, NULL, NULL, "vd",
72a979f0 5254 (status) ?
4fa6811b
HMH		 5255 TP_CMOS_THINKLIGHT_ON :
5256 TP_CMOS_THINKLIGHT_OFF);
5257 } else {
5258 rc = acpi_evalf(lght_handle, NULL, NULL, "vd",
72a979f0 5259 (status) ? 1 : 0);
4fa6811b 5260 }
72a979f0 5261 return (rc) ? 0 : -EIO;
4fa6811b
HMH		 5262 }
5263
5264 return -ENXIO;
5265}
5266
e306501d
HMH		 5267static void light_set_status_worker(struct work_struct *work)
5268{
5269 struct tpacpi_led_classdev *data =
5270 container_of(work, struct tpacpi_led_classdev, work);
5271
5272 if (likely(tpacpi_lifecycle == TPACPI_LIFE_RUNNING))
75bd3bf2 5273 light_set_status((data->new_state != TPACPI_LED_OFF));
e306501d
HMH		 5274}
5275
5276static void light_sysfs_set(struct led_classdev *led_cdev,
5277 enum led_brightness brightness)
5278{
5279 struct tpacpi_led_classdev *data =
5280 container_of(led_cdev,
5281 struct tpacpi_led_classdev,
5282 led_classdev);
75bd3bf2
HMH		 5283 data->new_state = (brightness != LED_OFF) ?
5284 TPACPI_LED_ON : TPACPI_LED_OFF;
e0e3c061 5285 queue_work(tpacpi_wq, &data->work);
e306501d
HMH		 5286}
5287
5288static enum led_brightness light_sysfs_get(struct led_classdev *led_cdev)
5289{
72a979f0 5290 return (light_get_status() == 1) ? LED_FULL : LED_OFF;
e306501d
HMH		 5291}
5292
5293static struct tpacpi_led_classdev tpacpi_led_thinklight = {
5294 .led_classdev = {
5295 .name = "tpacpi::thinklight",
5296 .brightness_set = &light_sysfs_set,
5297 .brightness_get = &light_sysfs_get,
5298 }
5299};
5300
a5763f22 5301static int __init light_init(struct ibm_init_struct *iibm)
1da177e4 5302{
9c0a76e1 5303 int rc;
e306501d 5304
fe08bc4b
HMH		 5305 vdbg_printk(TPACPI_DBG_INIT, "initializing light subdriver\n");
5306
e28393c0
HMH		 5307 if (tpacpi_is_ibm()) {
5308 TPACPI_ACPIHANDLE_INIT(ledb);
5309 TPACPI_ACPIHANDLE_INIT(lght);
5310 }
e0c7dfe7 5311 TPACPI_ACPIHANDLE_INIT(cmos);
e306501d 5312 INIT_WORK(&tpacpi_led_thinklight.work, light_set_status_worker);
5fba344c 5313
78f81cc4 5314 /* light not supported on 570, 600e/x, 770e, 770x, G4x, R30, R31 */
d8fd94d9 5315 tp_features.light = (cmos_handle || lght_handle) && !ledb_handle;
78f81cc4 5316
d8fd94d9 5317 if (tp_features.light)
78f81cc4
BD		 5318 /* light status not supported on
5319 570, 600e/x, 770e, 770x, G4x, R30, R31, R32, X20 */
d8fd94d9
HMH		 5320 tp_features.light_status =
5321 acpi_evalf(ec_handle, NULL, "KBLT", "qv");
1da177e4 5322
9c0a76e1
HMH		 5323 vdbg_printk(TPACPI_DBG_INIT, "light is %s, light status is %s\n",
5324 str_supported(tp_features.light),
5325 str_supported(tp_features.light_status));
fe08bc4b 5326
9c0a76e1
HMH		 5327 if (!tp_features.light)
5328 return 1;
5329
5330 rc = led_classdev_register(&tpacpi_pdev->dev,
5331 &tpacpi_led_thinklight.led_classdev);
e306501d
HMH		 5332
5333 if (rc < 0) {
5334 tp_features.light = 0;
5335 tp_features.light_status = 0;
9c0a76e1
HMH		 5336 } else {
5337 rc = 0;
e306501d 5338 }
9c0a76e1 5339
e306501d
HMH		 5340 return rc;
5341}
5342
5343static void light_exit(void)
5344{
5345 led_classdev_unregister(&tpacpi_led_thinklight.led_classdev);
6d394e19 5346 flush_workqueue(tpacpi_wq);
1da177e4
LT		 5347}
5348
887965e6 5349static int light_read(struct seq_file *m)
1da177e4 5350{
4fa6811b 5351 int status;
1da177e4 5352
d8fd94d9 5353 if (!tp_features.light) {
887965e6 5354 seq_printf(m, "status:\t\tnot supported\n");
d8fd94d9 5355 } else if (!tp_features.light_status) {
887965e6
AD		 5356 seq_printf(m, "status:\t\tunknown\n");
5357 seq_printf(m, "commands:\ton, off\n");
78f81cc4 5358 } else {
4fa6811b
HMH		 5359 status = light_get_status();
5360 if (status < 0)
5361 return status;
887965e6
AD		 5362 seq_printf(m, "status:\t\t%s\n", onoff(status, 0));
5363 seq_printf(m, "commands:\ton, off\n");
78f81cc4 5364 }
1da177e4 5365
887965e6 5366 return 0;
1da177e4
LT		 5367}
5368
78f81cc4 5369static int light_write(char *buf)
1da177e4 5370{
1da177e4 5371 char *cmd;
4fa6811b 5372 int newstatus = 0;
78f81cc4 5373
d8fd94d9 5374 if (!tp_features.light)
78f81cc4
BD		 5375 return -ENODEV;
5376
1da177e4
LT		 5377 while ((cmd = next_cmd(&buf))) {
5378 if (strlencmp(cmd, "on") == 0) {
4fa6811b 5379 newstatus = 1;
1da177e4 5380 } else if (strlencmp(cmd, "off") == 0) {
4fa6811b 5381 newstatus = 0;
1da177e4
LT		 5382 } else
5383 return -EINVAL;
1da177e4
LT		 5384 }
5385
4fa6811b 5386 return light_set_status(newstatus);
1da177e4
LT		 5387}
5388
a5763f22
HMH		 5389static struct ibm_struct light_driver_data = {
5390 .name = "light",
5391 .read = light_read,
5392 .write = light_write,
e306501d 5393 .exit = light_exit,
a5763f22
HMH		 5394};
5395
56b6aeb0
HMH		 5396/*************************************************************************
5397 * CMOS subdriver
5398 */
5399
b616004c
HMH		 5400/* sysfs cmos_command -------------------------------------------------- */
5401static ssize_t cmos_command_store(struct device *dev,
5402 struct device_attribute *attr,
5403 const char *buf, size_t count)
5404{
5405 unsigned long cmos_cmd;
5406 int res;
5407
5408 if (parse_strtoul(buf, 21, &cmos_cmd))
5409 return -EINVAL;
5410
5411 res = issue_thinkpad_cmos_command(cmos_cmd);
72a979f0 5412 return (res) ? res : count;
b616004c
HMH		 5413}
5414
b4dd04ac 5415static DEVICE_ATTR_WO(cmos_command);
b616004c
HMH		 5416
5417/* --------------------------------------------------------------------- */
5418
a5763f22 5419static int __init cmos_init(struct ibm_init_struct *iibm)
5fba344c 5420{
b616004c
HMH		 5421 int res;
5422
fe08bc4b
HMH		 5423 vdbg_printk(TPACPI_DBG_INIT,
5424 "initializing cmos commands subdriver\n");
5425
e0c7dfe7 5426 TPACPI_ACPIHANDLE_INIT(cmos);
5fba344c 5427
fe08bc4b
HMH		 5428 vdbg_printk(TPACPI_DBG_INIT, "cmos commands are %s\n",
5429 str_supported(cmos_handle != NULL));
b616004c
HMH		 5430
5431 res = device_create_file(&tpacpi_pdev->dev, &dev_attr_cmos_command);
5432 if (res)
5433 return res;
5434
72a979f0 5435 return (cmos_handle) ? 0 : 1;
5fba344c
HMH		 5436}
5437
b616004c
HMH		 5438static void cmos_exit(void)
5439{
5440 device_remove_file(&tpacpi_pdev->dev, &dev_attr_cmos_command);
5441}
5442
887965e6 5443static int cmos_read(struct seq_file *m)
1da177e4 5444{
78f81cc4
BD		 5445 /* cmos not supported on 570, 600e/x, 770e, 770x, A21e, A2xm/p,
5446 R30, R31, T20-22, X20-21 */
1da177e4 5447 if (!cmos_handle)
887965e6 5448 seq_printf(m, "status:\t\tnot supported\n");
1da177e4 5449 else {
887965e6
AD		 5450 seq_printf(m, "status:\t\tsupported\n");
5451 seq_printf(m, "commands:\t<cmd> (<cmd> is 0-21)\n");
1da177e4
LT		 5452 }
5453
887965e6 5454 return 0;
1da177e4
LT		 5455}
5456
78f81cc4 5457static int cmos_write(char *buf)
1da177e4
LT		 5458{
5459 char *cmd;
c9bea99c 5460 int cmos_cmd, res;
1da177e4
LT		 5461
5462 while ((cmd = next_cmd(&buf))) {
78f81cc4
BD		 5463 if (sscanf(cmd, "%u", &cmos_cmd) == 1 &&
5464 cmos_cmd >= 0 && cmos_cmd <= 21) {
1da177e4
LT		 5465 /* cmos_cmd set */
5466 } else
5467 return -EINVAL;
5468
c9bea99c
HMH		 5469 res = issue_thinkpad_cmos_command(cmos_cmd);
5470 if (res)
5471 return res;
1da177e4
LT		 5472 }
5473
5474 return 0;
78f81cc4
BD		 5475}
5476
a5763f22
HMH		 5477static struct ibm_struct cmos_driver_data = {
5478 .name = "cmos",
5479 .read = cmos_read,
5480 .write = cmos_write,
b616004c 5481 .exit = cmos_exit,
a5763f22 5482};
56b6aeb0
HMH		 5483
5484/*************************************************************************
5485 * LED subdriver
5486 */
5487
f74a27d4
HMH		 5488enum led_access_mode {
5489 TPACPI_LED_NONE = 0,
5490 TPACPI_LED_570, /* 570 */
5491 TPACPI_LED_OLD, /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20-21 */
5492 TPACPI_LED_NEW, /* all others */
5493};
5494
5495enum { /* For TPACPI_LED_OLD */
5496 TPACPI_LED_EC_HLCL = 0x0c, /* EC reg to get led to power on */
5497 TPACPI_LED_EC_HLBL = 0x0d, /* EC reg to blink a lit led */
5498 TPACPI_LED_EC_HLMS = 0x0e, /* EC reg to select led to command */
5499};
5500
9a8e1738 5501static enum led_access_mode led_supported;
78f81cc4 5502
2cbb5c8f 5503static acpi_handle led_handle;
56b6aeb0 5504
f21179a4 5505#define TPACPI_LED_NUMLEDS 16
af116101
HMH		 5506static struct tpacpi_led_classdev *tpacpi_leds;
5507static enum led_status_t tpacpi_led_state_cache[TPACPI_LED_NUMLEDS];
e3aa51fe 5508static const char * const tpacpi_led_names[TPACPI_LED_NUMLEDS] = {
af116101
HMH		 5509 /* there's a limit of 19 chars + NULL before 2.6.26 */
5510 "tpacpi::power",
5511 "tpacpi:orange:batt",
5512 "tpacpi:green:batt",
5513 "tpacpi::dock_active",
5514 "tpacpi::bay_active",
5515 "tpacpi::dock_batt",
5516 "tpacpi::unknown_led",
5517 "tpacpi::standby",
f21179a4
HMH		 5518 "tpacpi::dock_status1",
5519 "tpacpi::dock_status2",
5520 "tpacpi::unknown_led2",
5521 "tpacpi::unknown_led3",
5522 "tpacpi::thinkvantage",
af116101 5523};
f21179a4 5524#define TPACPI_SAFE_LEDS 0x1081U
a4d5effc
HMH		 5525
5526static inline bool tpacpi_is_led_restricted(const unsigned int led)
5527{
5528#ifdef CONFIG_THINKPAD_ACPI_UNSAFE_LEDS
5529 return false;
5530#else
f21179a4 5531 return (1U & (TPACPI_SAFE_LEDS >> led)) == 0;
a4d5effc
HMH		 5532#endif
5533}
af116101 5534
24e45bbe 5535static int led_get_status(const unsigned int led)
4fa6811b
HMH		 5536{
5537 int status;
af116101 5538 enum led_status_t led_s;
4fa6811b
HMH		 5539
5540 switch (led_supported) {
5541 case TPACPI_LED_570:
5542 if (!acpi_evalf(ec_handle,
5543 &status, "GLED", "dd", 1 << led))
5544 return -EIO;
72a979f0 5545 led_s = (status == 0) ?
4fa6811b 5546 TPACPI_LED_OFF :
72a979f0 5547 ((status == 1) ?
4fa6811b
HMH		 5548 TPACPI_LED_ON :
5549 TPACPI_LED_BLINK);
af116101
HMH		 5550 tpacpi_led_state_cache[led] = led_s;
5551 return led_s;
4fa6811b
HMH		 5552 default:
5553 return -ENXIO;
5554 }
5555
5556 /* not reached */
5557}
5558
24e45bbe
HMH		 5559static int led_set_status(const unsigned int led,
5560 const enum led_status_t ledstatus)
4fa6811b
HMH		 5561{
5562 /* off, on, blink. Index is led_status_t */
24e45bbe
HMH		 5563 static const unsigned int led_sled_arg1[] = { 0, 1, 3 };
5564 static const unsigned int led_led_arg1[] = { 0, 0x80, 0xc0 };
4fa6811b
HMH		 5565
5566 int rc = 0;
5567
5568 switch (led_supported) {
5569 case TPACPI_LED_570:
24e45bbe 5570 /* 570 */
a4d5effc 5571 if (unlikely(led > 7))
24e45bbe 5572 return -EINVAL;
a4d5effc
HMH		 5573 if (unlikely(tpacpi_is_led_restricted(led)))
5574 return -EPERM;
24e45bbe
HMH		 5575 if (!acpi_evalf(led_handle, NULL, NULL, "vdd",
5576 (1 << led), led_sled_arg1[ledstatus]))
5577 rc = -EIO;
5578 break;
4fa6811b 5579 case TPACPI_LED_OLD:
24e45bbe 5580 /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20 */
a4d5effc 5581 if (unlikely(led > 7))
24e45bbe 5582 return -EINVAL;
a4d5effc
HMH		 5583 if (unlikely(tpacpi_is_led_restricted(led)))
5584 return -EPERM;
24e45bbe
HMH		 5585 rc = ec_write(TPACPI_LED_EC_HLMS, (1 << led));
5586 if (rc >= 0)
5587 rc = ec_write(TPACPI_LED_EC_HLBL,
5588 (ledstatus == TPACPI_LED_BLINK) << led);
5589 if (rc >= 0)
5590 rc = ec_write(TPACPI_LED_EC_HLCL,
5591 (ledstatus != TPACPI_LED_OFF) << led);
5592 break;
4fa6811b 5593 case TPACPI_LED_NEW:
24e45bbe 5594 /* all others */
a4d5effc
HMH		 5595 if (unlikely(led >= TPACPI_LED_NUMLEDS))
5596 return -EINVAL;
5597 if (unlikely(tpacpi_is_led_restricted(led)))
5598 return -EPERM;
24e45bbe
HMH		 5599 if (!acpi_evalf(led_handle, NULL, NULL, "vdd",
5600 led, led_led_arg1[ledstatus]))
5601 rc = -EIO;
5602 break;
4fa6811b
HMH		 5603 default:
5604 rc = -ENXIO;
5605 }
5606
af116101
HMH		 5607 if (!rc)
5608 tpacpi_led_state_cache[led] = ledstatus;
5609
5610 return rc;
5611}
5612
af116101
HMH		 5613static void led_set_status_worker(struct work_struct *work)
5614{
5615 struct tpacpi_led_classdev *data =
5616 container_of(work, struct tpacpi_led_classdev, work);
5617
5618 if (likely(tpacpi_lifecycle == TPACPI_LIFE_RUNNING))
75bd3bf2 5619 led_set_status(data->led, data->new_state);
af116101
HMH		 5620}
5621
5622static void led_sysfs_set(struct led_classdev *led_cdev,
5623 enum led_brightness brightness)
5624{
5625 struct tpacpi_led_classdev *data = container_of(led_cdev,
5626 struct tpacpi_led_classdev, led_classdev);
5627
75bd3bf2
HMH		 5628 if (brightness == LED_OFF)
5629 data->new_state = TPACPI_LED_OFF;
5630 else if (tpacpi_led_state_cache[data->led] != TPACPI_LED_BLINK)
5631 data->new_state = TPACPI_LED_ON;
5632 else
5633 data->new_state = TPACPI_LED_BLINK;
5634
e0e3c061 5635 queue_work(tpacpi_wq, &data->work);
af116101
HMH		 5636}
5637
5638static int led_sysfs_blink_set(struct led_classdev *led_cdev,
5639 unsigned long *delay_on, unsigned long *delay_off)
5640{
5641 struct tpacpi_led_classdev *data = container_of(led_cdev,
5642 struct tpacpi_led_classdev, led_classdev);
5643
5644 /* Can we choose the flash rate? */
5645 if (*delay_on == 0 && *delay_off == 0) {
5646 /* yes. set them to the hardware blink rate (1 Hz) */
5647 *delay_on = 500; /* ms */
5648 *delay_off = 500; /* ms */
5649 } else if ((*delay_on != 500) || (*delay_off != 500))
5650 return -EINVAL;
5651
75bd3bf2 5652 data->new_state = TPACPI_LED_BLINK;
e0e3c061 5653 queue_work(tpacpi_wq, &data->work);
af116101
HMH		 5654
5655 return 0;
5656}
5657
5658static enum led_brightness led_sysfs_get(struct led_classdev *led_cdev)
5659{
5660 int rc;
5661
5662 struct tpacpi_led_classdev *data = container_of(led_cdev,
5663 struct tpacpi_led_classdev, led_classdev);
5664
5665 rc = led_get_status(data->led);
5666
5667 if (rc == TPACPI_LED_OFF || rc < 0)
5668 rc = LED_OFF; /* no error handling in led class :( */
5669 else
5670 rc = LED_FULL;
5671
4fa6811b
HMH		 5672 return rc;
5673}
5674
af116101
HMH		 5675static void led_exit(void)
5676{
5677 unsigned int i;
5678
5679 for (i = 0; i < TPACPI_LED_NUMLEDS; i++) {
5680 if (tpacpi_leds[i].led_classdev.name)
5681 led_classdev_unregister(&tpacpi_leds[i].led_classdev);
5682 }
5683
e03e389d 5684 flush_workqueue(tpacpi_wq);
af116101 5685 kfree(tpacpi_leds);
af116101
HMH		 5686}
5687
a4d5effc
HMH		 5688static int __init tpacpi_init_led(unsigned int led)
5689{
5690 int rc;
5691
5692 tpacpi_leds[led].led = led;
5693
f21179a4
HMH		 5694 /* LEDs with no name don't get registered */
5695 if (!tpacpi_led_names[led])
5696 return 0;
5697
a4d5effc
HMH		 5698 tpacpi_leds[led].led_classdev.brightness_set = &led_sysfs_set;
5699 tpacpi_leds[led].led_classdev.blink_set = &led_sysfs_blink_set;
5700 if (led_supported == TPACPI_LED_570)
5701 tpacpi_leds[led].led_classdev.brightness_get =
5702 &led_sysfs_get;
5703
5704 tpacpi_leds[led].led_classdev.name = tpacpi_led_names[led];
5705
5706 INIT_WORK(&tpacpi_leds[led].work, led_set_status_worker);
5707
5708 rc = led_classdev_register(&tpacpi_pdev->dev,
5709 &tpacpi_leds[led].led_classdev);
5710 if (rc < 0)
5711 tpacpi_leds[led].led_classdev.name = NULL;
5712
5713 return rc;
5714}
5715
f21179a4
HMH		 5716static const struct tpacpi_quirk led_useful_qtable[] __initconst = {
5717 TPACPI_Q_IBM('1', 'E', 0x009f), /* A30 */
5718 TPACPI_Q_IBM('1', 'N', 0x009f), /* A31 */
5719 TPACPI_Q_IBM('1', 'G', 0x009f), /* A31 */
5720
5721 TPACPI_Q_IBM('1', 'I', 0x0097), /* T30 */
5722 TPACPI_Q_IBM('1', 'R', 0x0097), /* T40, T41, T42, R50, R51 */
5723 TPACPI_Q_IBM('7', '0', 0x0097), /* T43, R52 */
5724 TPACPI_Q_IBM('1', 'Y', 0x0097), /* T43 */
5725 TPACPI_Q_IBM('1', 'W', 0x0097), /* R50e */
5726 TPACPI_Q_IBM('1', 'V', 0x0097), /* R51 */
5727 TPACPI_Q_IBM('7', '8', 0x0097), /* R51e */
5728 TPACPI_Q_IBM('7', '6', 0x0097), /* R52 */
5729
5730 TPACPI_Q_IBM('1', 'K', 0x00bf), /* X30 */
5731 TPACPI_Q_IBM('1', 'Q', 0x00bf), /* X31, X32 */
5732 TPACPI_Q_IBM('1', 'U', 0x00bf), /* X40 */
5733 TPACPI_Q_IBM('7', '4', 0x00bf), /* X41 */
5734 TPACPI_Q_IBM('7', '5', 0x00bf), /* X41t */
5735
5736 TPACPI_Q_IBM('7', '9', 0x1f97), /* T60 (1) */
5737 TPACPI_Q_IBM('7', '7', 0x1f97), /* Z60* (1) */
5738 TPACPI_Q_IBM('7', 'F', 0x1f97), /* Z61* (1) */
5739 TPACPI_Q_IBM('7', 'B', 0x1fb7), /* X60 (1) */
5740
5741 /* (1) - may have excess leds enabled on MSB */
5742
5743 /* Defaults (order matters, keep last, don't reorder!) */
5744 { /* Lenovo */
5745 .vendor = PCI_VENDOR_ID_LENOVO,
5746 .bios = TPACPI_MATCH_ANY, .ec = TPACPI_MATCH_ANY,
5747 .quirks = 0x1fffU,
5748 },
5749 { /* IBM ThinkPads with no EC version string */
5750 .vendor = PCI_VENDOR_ID_IBM,
5751 .bios = TPACPI_MATCH_ANY, .ec = TPACPI_MATCH_UNKNOWN,
5752 .quirks = 0x00ffU,
5753 },
5754 { /* IBM ThinkPads with EC version string */
5755 .vendor = PCI_VENDOR_ID_IBM,
5756 .bios = TPACPI_MATCH_ANY, .ec = TPACPI_MATCH_ANY,
5757 .quirks = 0x00bfU,
5758 },
5759};
5760
5761#undef TPACPI_LEDQ_IBM
5762#undef TPACPI_LEDQ_LNV
5763
2cbb5c8f
HMH		 5764static enum led_access_mode __init led_init_detect_mode(void)
5765{
5766 acpi_status status;
5767
5768 if (tpacpi_is_ibm()) {
5769 /* 570 */
5770 status = acpi_get_handle(ec_handle, "SLED", &led_handle);
5771 if (ACPI_SUCCESS(status))
5772 return TPACPI_LED_570;
5773
5774 /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20-21 */
5775 status = acpi_get_handle(ec_handle, "SYSL", &led_handle);
5776 if (ACPI_SUCCESS(status))
5777 return TPACPI_LED_OLD;
5778 }
5779
5780 /* most others */
5781 status = acpi_get_handle(ec_handle, "LED", &led_handle);
5782 if (ACPI_SUCCESS(status))
5783 return TPACPI_LED_NEW;
5784
5785 /* R30, R31, and unknown firmwares */
5786 led_handle = NULL;
5787 return TPACPI_LED_NONE;
5788}
5789
a5763f22 5790static int __init led_init(struct ibm_init_struct *iibm)
78f81cc4 5791{
af116101
HMH		 5792 unsigned int i;
5793 int rc;
f21179a4 5794 unsigned long useful_leds;
af116101 5795
fe08bc4b
HMH		 5796 vdbg_printk(TPACPI_DBG_INIT, "initializing LED subdriver\n");
5797
2cbb5c8f 5798 led_supported = led_init_detect_mode();
78f81cc4 5799
fcb44e12
AL		 5800 if (led_supported != TPACPI_LED_NONE) {
5801 useful_leds = tpacpi_check_quirks(led_useful_qtable,
5802 ARRAY_SIZE(led_useful_qtable));
5803
5804 if (!useful_leds) {
5805 led_handle = NULL;
5806 led_supported = TPACPI_LED_NONE;
5807 }
5808 }
5809
fe08bc4b
HMH		 5810 vdbg_printk(TPACPI_DBG_INIT, "LED commands are %s, mode %d\n",
5811 str_supported(led_supported), led_supported);
5812
f21179a4
HMH		 5813 if (led_supported == TPACPI_LED_NONE)
5814 return 1;
5815
af116101
HMH		 5816 tpacpi_leds = kzalloc(sizeof(*tpacpi_leds) * TPACPI_LED_NUMLEDS,
5817 GFP_KERNEL);
5818 if (!tpacpi_leds) {
0978e012 5819 pr_err("Out of memory for LED data\n");
af116101
HMH		 5820 return -ENOMEM;
5821 }
5822
5823 for (i = 0; i < TPACPI_LED_NUMLEDS; i++) {
edf2d778
AL		 5824 tpacpi_leds[i].led = -1;
5825
f21179a4
HMH		 5826 if (!tpacpi_is_led_restricted(i) &&
5827 test_bit(i, &useful_leds)) {
a4d5effc
HMH		 5828 rc = tpacpi_init_led(i);
5829 if (rc < 0) {
5830 led_exit();
5831 return rc;
5832 }
af116101
HMH		 5833 }
5834 }
5835
a4d5effc 5836#ifdef CONFIG_THINKPAD_ACPI_UNSAFE_LEDS
0978e012
JP		 5837 pr_notice("warning: userspace override of important "
5838 "firmware LEDs is enabled\n");
a4d5effc 5839#endif
f21179a4 5840 return 0;
78f81cc4
BD		 5841}
5842
4fa6811b
HMH		 5843#define str_led_status(s) \
5844 ((s) == TPACPI_LED_OFF ? "off" : \
5845 ((s) == TPACPI_LED_ON ? "on" : "blinking"))
78f81cc4 5846
887965e6 5847static int led_read(struct seq_file *m)
1da177e4 5848{
78f81cc4 5849 if (!led_supported) {
887965e6
AD		 5850 seq_printf(m, "status:\t\tnot supported\n");
5851 return 0;
78f81cc4 5852 }
887965e6 5853 seq_printf(m, "status:\t\tsupported\n");
78f81cc4 5854
efa27145 5855 if (led_supported == TPACPI_LED_570) {
78f81cc4
BD		 5856 /* 570 */
5857 int i, status;
5858 for (i = 0; i < 8; i++) {
4fa6811b
HMH		 5859 status = led_get_status(i);
5860 if (status < 0)
78f81cc4 5861 return -EIO;
887965e6 5862 seq_printf(m, "%d:\t\t%s\n",
4fa6811b 5863 i, str_led_status(status));
78f81cc4
BD		 5864 }
5865 }
5866
887965e6 5867 seq_printf(m, "commands:\t"
f21179a4 5868 "<led> on, <led> off, <led> blink (<led> is 0-15)\n");
1da177e4 5869
887965e6 5870 return 0;
1da177e4
LT		 5871}
5872
78f81cc4 5873static int led_write(char *buf)
1da177e4
LT		 5874{
5875 char *cmd;
4fa6811b
HMH		 5876 int led, rc;
5877 enum led_status_t s;
78f81cc4
BD		 5878
5879 if (!led_supported)
5880 return -ENODEV;
1da177e4
LT		 5881
5882 while ((cmd = next_cmd(&buf))) {
edf2d778 5883 if (sscanf(cmd, "%d", &led) != 1)
1da177e4
LT		 5884 return -EINVAL;
5885
edf2d778
AL		 5886 if (led < 0 || led > (TPACPI_LED_NUMLEDS - 1) ||
5887 tpacpi_leds[led].led < 0)
5888 return -ENODEV;
5889
78f81cc4 5890 if (strstr(cmd, "off")) {
4fa6811b 5891 s = TPACPI_LED_OFF;
1da177e4 5892 } else if (strstr(cmd, "on")) {
4fa6811b 5893 s = TPACPI_LED_ON;
78f81cc4 5894 } else if (strstr(cmd, "blink")) {
4fa6811b 5895 s = TPACPI_LED_BLINK;
78f81cc4 5896 } else {
4fa6811b 5897 return -EINVAL;
78f81cc4 5898 }
4fa6811b
HMH		 5899
5900 rc = led_set_status(led, s);
5901 if (rc < 0)
5902 return rc;
78f81cc4
BD		 5903 }
5904
5905 return 0;
5906}
5907
a5763f22
HMH		 5908static struct ibm_struct led_driver_data = {
5909 .name = "led",
5910 .read = led_read,
5911 .write = led_write,
af116101 5912 .exit = led_exit,
a5763f22
HMH		 5913};
5914
56b6aeb0
HMH		 5915/*************************************************************************
5916 * Beep subdriver
5917 */
5918
e0c7dfe7 5919TPACPI_HANDLE(beep, ec, "BEEP"); /* all except R30, R31 */
56b6aeb0 5920
60201732
HMH		 5921#define TPACPI_BEEP_Q1 0x0001
5922
5923static const struct tpacpi_quirk beep_quirk_table[] __initconst = {
5924 TPACPI_Q_IBM('I', 'M', TPACPI_BEEP_Q1), /* 570 */
5925 TPACPI_Q_IBM('I', 'U', TPACPI_BEEP_Q1), /* 570E - unverified */
5926};
5927
a5763f22 5928static int __init beep_init(struct ibm_init_struct *iibm)
5fba344c 5929{
60201732
HMH		 5930 unsigned long quirks;
5931
fe08bc4b
HMH		 5932 vdbg_printk(TPACPI_DBG_INIT, "initializing beep subdriver\n");
5933
e0c7dfe7 5934 TPACPI_ACPIHANDLE_INIT(beep);
5fba344c 5935
fe08bc4b
HMH		 5936 vdbg_printk(TPACPI_DBG_INIT, "beep is %s\n",
5937 str_supported(beep_handle != NULL));
5938
60201732
HMH		 5939 quirks = tpacpi_check_quirks(beep_quirk_table,
5940 ARRAY_SIZE(beep_quirk_table));
5941
5942 tp_features.beep_needs_two_args = !!(quirks & TPACPI_BEEP_Q1);
5943
72a979f0 5944 return (beep_handle) ? 0 : 1;
5fba344c
HMH		 5945}
5946
887965e6 5947static int beep_read(struct seq_file *m)
78f81cc4 5948{
78f81cc4 5949 if (!beep_handle)
887965e6 5950 seq_printf(m, "status:\t\tnot supported\n");
78f81cc4 5951 else {
887965e6
AD		 5952 seq_printf(m, "status:\t\tsupported\n");
5953 seq_printf(m, "commands:\t<cmd> (<cmd> is 0-17)\n");
78f81cc4
BD		 5954 }
5955
887965e6 5956 return 0;
78f81cc4
BD		 5957}
5958
5959static int beep_write(char *buf)
5960{
5961 char *cmd;
5962 int beep_cmd;
5963
5964 if (!beep_handle)
5965 return -ENODEV;
5966
5967 while ((cmd = next_cmd(&buf))) {
5968 if (sscanf(cmd, "%u", &beep_cmd) == 1 &&
5969 beep_cmd >= 0 && beep_cmd <= 17) {
5970 /* beep_cmd set */
5971 } else
5972 return -EINVAL;
60201732
HMH		 5973 if (tp_features.beep_needs_two_args) {
5974 if (!acpi_evalf(beep_handle, NULL, NULL, "vdd",
5975 beep_cmd, 0))
5976 return -EIO;
5977 } else {
5978 if (!acpi_evalf(beep_handle, NULL, NULL, "vd",
5979 beep_cmd))
5980 return -EIO;
5981 }
78f81cc4
BD		 5982 }
5983
5984 return 0;
5985}
5986
a5763f22
HMH		 5987static struct ibm_struct beep_driver_data = {
5988 .name = "beep",
5989 .read = beep_read,
5990 .write = beep_write,
5991};
5992
56b6aeb0
HMH		 5993/*************************************************************************
5994 * Thermal subdriver
5995 */
78f81cc4 5996
f74a27d4
HMH		 5997enum thermal_access_mode {
5998 TPACPI_THERMAL_NONE = 0, /* No thermal support */
5999 TPACPI_THERMAL_ACPI_TMP07, /* Use ACPI TMP0-7 */
6000 TPACPI_THERMAL_ACPI_UPDT, /* Use ACPI TMP0-7 with UPDT */
6001 TPACPI_THERMAL_TPEC_8, /* Use ACPI EC regs, 8 sensors */
6002 TPACPI_THERMAL_TPEC_16, /* Use ACPI EC regs, 16 sensors */
6003};
6004
6005enum { /* TPACPI_THERMAL_TPEC_* */
6006 TP_EC_THERMAL_TMP0 = 0x78, /* ACPI EC regs TMP 0..7 */
6007 TP_EC_THERMAL_TMP8 = 0xC0, /* ACPI EC regs TMP 8..15 */
6008 TP_EC_THERMAL_TMP_NA = -128, /* ACPI EC sensor not available */
9ebd9e83
HMH		 6009
6010 TPACPI_THERMAL_SENSOR_NA = -128000, /* Sensor not available */
f74a27d4
HMH		 6011};
6012
9ebd9e83 6013
f74a27d4
HMH		 6014#define TPACPI_MAX_THERMAL_SENSORS 16 /* Max thermal sensors supported */
6015struct ibm_thermal_sensors_struct {
6016 s32 temp[TPACPI_MAX_THERMAL_SENSORS];
6017};
6018
a26f878a 6019static enum thermal_access_mode thermal_read_mode;
78f81cc4 6020
b21a15f6
HMH		 6021/* idx is zero-based */
6022static int thermal_get_sensor(int idx, s32 *value)
6023{
6024 int t;
6025 s8 tmp;
6026 char tmpi[5];
6027
6028 t = TP_EC_THERMAL_TMP0;
6029
6030 switch (thermal_read_mode) {
6031#if TPACPI_MAX_THERMAL_SENSORS >= 16
6032 case TPACPI_THERMAL_TPEC_16:
6033 if (idx >= 8 && idx <= 15) {
6034 t = TP_EC_THERMAL_TMP8;
6035 idx -= 8;
6036 }
6037 /* fallthrough */
6038#endif
6039 case TPACPI_THERMAL_TPEC_8:
6040 if (idx <= 7) {
6041 if (!acpi_ec_read(t + idx, &tmp))
6042 return -EIO;
6043 *value = tmp * 1000;
6044 return 0;
6045 }
6046 break;
6047
6048 case TPACPI_THERMAL_ACPI_UPDT:
6049 if (idx <= 7) {
6050 snprintf(tmpi, sizeof(tmpi), "TMP%c", '0' + idx);
6051 if (!acpi_evalf(ec_handle, NULL, "UPDT", "v"))
6052 return -EIO;
6053 if (!acpi_evalf(ec_handle, &t, tmpi, "d"))
6054 return -EIO;
6055 *value = (t - 2732) * 100;
6056 return 0;
6057 }
6058 break;
6059
6060 case TPACPI_THERMAL_ACPI_TMP07:
6061 if (idx <= 7) {
6062 snprintf(tmpi, sizeof(tmpi), "TMP%c", '0' + idx);
6063 if (!acpi_evalf(ec_handle, &t, tmpi, "d"))
6064 return -EIO;
6065 if (t > 127 || t < -127)
6066 t = TP_EC_THERMAL_TMP_NA;
6067 *value = t * 1000;
6068 return 0;
6069 }
6070 break;
6071
6072 case TPACPI_THERMAL_NONE:
6073 default:
6074 return -ENOSYS;
6075 }
6076
6077 return -EINVAL;
6078}
6079
6080static int thermal_get_sensors(struct ibm_thermal_sensors_struct *s)
6081{
6082 int res, i;
6083 int n;
6084
6085 n = 8;
6086 i = 0;
6087
6088 if (!s)
6089 return -EINVAL;
6090
6091 if (thermal_read_mode == TPACPI_THERMAL_TPEC_16)
6092 n = 16;
6093
35ff8b9f 6094 for (i = 0 ; i < n; i++) {
b21a15f6
HMH		 6095 res = thermal_get_sensor(i, &s->temp[i]);
6096 if (res)
6097 return res;
6098 }
6099
6100 return n;
6101}
f74a27d4 6102
9ebd9e83
HMH		 6103static void thermal_dump_all_sensors(void)
6104{
6105 int n, i;
6106 struct ibm_thermal_sensors_struct t;
6107
6108 n = thermal_get_sensors(&t);
6109 if (n <= 0)
6110 return;
6111
0978e012 6112 pr_notice("temperatures (Celsius):");
9ebd9e83
HMH		 6113
6114 for (i = 0; i < n; i++) {
6115 if (t.temp[i] != TPACPI_THERMAL_SENSOR_NA)
0978e012 6116 pr_cont(" %d", (int)(t.temp[i] / 1000));
9ebd9e83 6117 else
0978e012 6118 pr_cont(" N/A");
9ebd9e83
HMH		 6119 }
6120
0978e012 6121 pr_cont("\n");
9ebd9e83
HMH		 6122}
6123
2c37aa4e
HMH		 6124/* sysfs temp##_input -------------------------------------------------- */
6125
6126static ssize_t thermal_temp_input_show(struct device *dev,
6127 struct device_attribute *attr,
6128 char *buf)
6129{
6130 struct sensor_device_attribute *sensor_attr =
6131 to_sensor_dev_attr(attr);
6132 int idx = sensor_attr->index;
6133 s32 value;
6134 int res;
6135
6136 res = thermal_get_sensor(idx, &value);
6137 if (res)
6138 return res;
9ebd9e83 6139 if (value == TPACPI_THERMAL_SENSOR_NA)
2c37aa4e
HMH		 6140 return -ENXIO;
6141
6142 return snprintf(buf, PAGE_SIZE, "%d\n", value);
6143}
6144
6145#define THERMAL_SENSOR_ATTR_TEMP(_idxA, _idxB) \
35ff8b9f
HMH		 6146 SENSOR_ATTR(temp##_idxA##_input, S_IRUGO, \
6147 thermal_temp_input_show, NULL, _idxB)
2c37aa4e
HMH		 6148
6149static struct sensor_device_attribute sensor_dev_attr_thermal_temp_input[] = {
6150 THERMAL_SENSOR_ATTR_TEMP(1, 0),
6151 THERMAL_SENSOR_ATTR_TEMP(2, 1),
6152 THERMAL_SENSOR_ATTR_TEMP(3, 2),
6153 THERMAL_SENSOR_ATTR_TEMP(4, 3),
6154 THERMAL_SENSOR_ATTR_TEMP(5, 4),
6155 THERMAL_SENSOR_ATTR_TEMP(6, 5),
6156 THERMAL_SENSOR_ATTR_TEMP(7, 6),
6157 THERMAL_SENSOR_ATTR_TEMP(8, 7),
6158 THERMAL_SENSOR_ATTR_TEMP(9, 8),
6159 THERMAL_SENSOR_ATTR_TEMP(10, 9),
6160 THERMAL_SENSOR_ATTR_TEMP(11, 10),
6161 THERMAL_SENSOR_ATTR_TEMP(12, 11),
6162 THERMAL_SENSOR_ATTR_TEMP(13, 12),
6163 THERMAL_SENSOR_ATTR_TEMP(14, 13),
6164 THERMAL_SENSOR_ATTR_TEMP(15, 14),
6165 THERMAL_SENSOR_ATTR_TEMP(16, 15),
6166};
6167
6168#define THERMAL_ATTRS(X) \
6169 &sensor_dev_attr_thermal_temp_input[X].dev_attr.attr
6170
6171static struct attribute *thermal_temp_input_attr[] = {
6172 THERMAL_ATTRS(8),
6173 THERMAL_ATTRS(9),
6174 THERMAL_ATTRS(10),
6175 THERMAL_ATTRS(11),
6176 THERMAL_ATTRS(12),
6177 THERMAL_ATTRS(13),
6178 THERMAL_ATTRS(14),
6179 THERMAL_ATTRS(15),
6180 THERMAL_ATTRS(0),
6181 THERMAL_ATTRS(1),
6182 THERMAL_ATTRS(2),
6183 THERMAL_ATTRS(3),
6184 THERMAL_ATTRS(4),
6185 THERMAL_ATTRS(5),
6186 THERMAL_ATTRS(6),
6187 THERMAL_ATTRS(7),
6188 NULL
6189};
6190
6191static const struct attribute_group thermal_temp_input16_group = {
6192 .attrs = thermal_temp_input_attr
6193};
6194
6195static const struct attribute_group thermal_temp_input8_group = {
6196 .attrs = &thermal_temp_input_attr[8]
6197};
6198
6199#undef THERMAL_SENSOR_ATTR_TEMP
6200#undef THERMAL_ATTRS
6201
6202/* --------------------------------------------------------------------- */
6203
a5763f22 6204static int __init thermal_init(struct ibm_init_struct *iibm)
78f81cc4 6205{
60eb0b35
HMH		 6206 u8 t, ta1, ta2;
6207 int i;
5fba344c 6208 int acpi_tmp7;
2c37aa4e 6209 int res;
5fba344c 6210
fe08bc4b
HMH		 6211 vdbg_printk(TPACPI_DBG_INIT, "initializing thermal subdriver\n");
6212
5fba344c 6213 acpi_tmp7 = acpi_evalf(ec_handle, NULL, "TMP7", "qv");
60eb0b35 6214
3d6f99ca 6215 if (thinkpad_id.ec_model) {
60eb0b35
HMH		 6216 /*
6217 * Direct EC access mode: sensors at registers
6218 * 0x78-0x7F, 0xC0-0xC7. Registers return 0x00 for
6219 * non-implemented, thermal sensors return 0x80 when
6220 * not available
6221 */
78f81cc4 6222
60eb0b35
HMH		 6223 ta1 = ta2 = 0;
6224 for (i = 0; i < 8; i++) {
04cc862c 6225 if (acpi_ec_read(TP_EC_THERMAL_TMP0 + i, &t)) {
60eb0b35
HMH		 6226 ta1 |= t;
6227 } else {
6228 ta1 = 0;
6229 break;
6230 }
04cc862c 6231 if (acpi_ec_read(TP_EC_THERMAL_TMP8 + i, &t)) {
60eb0b35
HMH		 6232 ta2 |= t;
6233 } else {
6234 ta1 = 0;
6235 break;
6236 }
6237 }
6238 if (ta1 == 0) {
6239 /* This is sheer paranoia, but we handle it anyway */
6240 if (acpi_tmp7) {
0978e012 6241 pr_err("ThinkPad ACPI EC access misbehaving, "
35ff8b9f
HMH		 6242 "falling back to ACPI TMPx access "
6243 "mode\n");
efa27145 6244 thermal_read_mode = TPACPI_THERMAL_ACPI_TMP07;
60eb0b35 6245 } else {
0978e012 6246 pr_err("ThinkPad ACPI EC access misbehaving, "
60eb0b35 6247 "disabling thermal sensors access\n");
efa27145 6248 thermal_read_mode = TPACPI_THERMAL_NONE;
60eb0b35
HMH		 6249 }
6250 } else {
6251 thermal_read_mode =
6252 (ta2 != 0) ?
efa27145 6253 TPACPI_THERMAL_TPEC_16 : TPACPI_THERMAL_TPEC_8;
60eb0b35
HMH		 6254 }
6255 } else if (acpi_tmp7) {
e28393c0
HMH		 6256 if (tpacpi_is_ibm() &&
6257 acpi_evalf(ec_handle, NULL, "UPDT", "qv")) {
a26f878a 6258 /* 600e/x, 770e, 770x */
efa27145 6259 thermal_read_mode = TPACPI_THERMAL_ACPI_UPDT;
a26f878a 6260 } else {
e28393c0 6261 /* IBM/LENOVO DSDT EC.TMPx access, max 8 sensors */
efa27145 6262 thermal_read_mode = TPACPI_THERMAL_ACPI_TMP07;
a26f878a
HMH		 6263 }
6264 } else {
6265 /* temperatures not supported on 570, G4x, R30, R31, R32 */
efa27145 6266 thermal_read_mode = TPACPI_THERMAL_NONE;
a26f878a 6267 }
78f81cc4 6268
fe08bc4b
HMH		 6269 vdbg_printk(TPACPI_DBG_INIT, "thermal is %s, mode %d\n",
6270 str_supported(thermal_read_mode != TPACPI_THERMAL_NONE),
6271 thermal_read_mode);
6272
35ff8b9f 6273 switch (thermal_read_mode) {
2c37aa4e 6274 case TPACPI_THERMAL_TPEC_16:
7fd40029 6275 res = sysfs_create_group(&tpacpi_sensors_pdev->dev.kobj,
2c37aa4e
HMH		 6276 &thermal_temp_input16_group);
6277 if (res)
6278 return res;
6279 break;
6280 case TPACPI_THERMAL_TPEC_8:
6281 case TPACPI_THERMAL_ACPI_TMP07:
6282 case TPACPI_THERMAL_ACPI_UPDT:
7fd40029 6283 res = sysfs_create_group(&tpacpi_sensors_pdev->dev.kobj,
2c37aa4e
HMH		 6284 &thermal_temp_input8_group);
6285 if (res)
6286 return res;
6287 break;
6288 case TPACPI_THERMAL_NONE:
6289 default:
6290 return 1;
6291 }
6292
6293 return 0;
6294}
6295
6296static void thermal_exit(void)
6297{
35ff8b9f 6298 switch (thermal_read_mode) {
2c37aa4e 6299 case TPACPI_THERMAL_TPEC_16:
7fd40029 6300 sysfs_remove_group(&tpacpi_sensors_pdev->dev.kobj,
2c37aa4e
HMH		 6301 &thermal_temp_input16_group);
6302 break;
6303 case TPACPI_THERMAL_TPEC_8:
6304 case TPACPI_THERMAL_ACPI_TMP07:
6305 case TPACPI_THERMAL_ACPI_UPDT:
7fd40029 6306 sysfs_remove_group(&tpacpi_sensors_pdev->dev.kobj,
f04d5e01 6307 &thermal_temp_input8_group);
2c37aa4e
HMH		 6308 break;
6309 case TPACPI_THERMAL_NONE:
6310 default:
6311 break;
6312 }
78f81cc4
BD		 6313}
6314
887965e6 6315static int thermal_read(struct seq_file *m)
a26f878a 6316{
a26f878a
HMH		 6317 int n, i;
6318 struct ibm_thermal_sensors_struct t;
6319
6320 n = thermal_get_sensors(&t);
6321 if (unlikely(n < 0))
6322 return n;
6323
887965e6 6324 seq_printf(m, "temperatures:\t");
a26f878a
HMH		 6325
6326 if (n > 0) {
6327 for (i = 0; i < (n - 1); i++)
887965e6
AD		 6328 seq_printf(m, "%d ", t.temp[i] / 1000);
6329 seq_printf(m, "%d\n", t.temp[i] / 1000);
a26f878a 6330 } else
887965e6 6331 seq_printf(m, "not supported\n");
78f81cc4 6332
887965e6 6333 return 0;
78f81cc4
BD		 6334}
6335
a5763f22
HMH		 6336static struct ibm_struct thermal_driver_data = {
6337 .name = "thermal",
6338 .read = thermal_read,
2c37aa4e 6339 .exit = thermal_exit,
a5763f22
HMH		 6340};
6341
56b6aeb0
HMH		 6342/*************************************************************************
6343 * Backlight/brightness subdriver
6344 */
6345
f74a27d4
HMH		 6346#define TPACPI_BACKLIGHT_DEV_NAME "thinkpad_screen"
6347
0e501834
HMH		 6348/*
6349 * ThinkPads can read brightness from two places: EC HBRV (0x31), or
6350 * CMOS NVRAM byte 0x5E, bits 0-3.
6351 *
6352 * EC HBRV (0x31) has the following layout
6353 * Bit 7: unknown function
6354 * Bit 6: unknown function
6355 * Bit 5: Z: honour scale changes, NZ: ignore scale changes
6356 * Bit 4: must be set to zero to avoid problems
6357 * Bit 3-0: backlight brightness level
6358 *
6359 * brightness_get_raw returns status data in the HBRV layout
d7880f10
HMH		 6360 *
6361 * WARNING: The X61 has been verified to use HBRV for something else, so
6362 * this should be used _only_ on IBM ThinkPads, and maybe with some careful
6363 * testing on the very early *60 Lenovo models...
0e501834
HMH		 6364 */
6365
e11aecf1
HMH		 6366enum {
6367 TP_EC_BACKLIGHT = 0x31,
6368
6369 /* TP_EC_BACKLIGHT bitmasks */
6370 TP_EC_BACKLIGHT_LVLMSK = 0x1F,
6371 TP_EC_BACKLIGHT_CMDMSK = 0xE0,
6372 TP_EC_BACKLIGHT_MAPSW = 0x20,
6373};
6374
0e501834
HMH		 6375enum tpacpi_brightness_access_mode {
6376 TPACPI_BRGHT_MODE_AUTO = 0, /* Not implemented yet */
6377 TPACPI_BRGHT_MODE_EC, /* EC control */
6378 TPACPI_BRGHT_MODE_UCMS_STEP, /* UCMS step-based control */
6379 TPACPI_BRGHT_MODE_ECNVRAM, /* EC control w/ NVRAM store */
6380 TPACPI_BRGHT_MODE_MAX
6381};
6382
94954cc6 6383static struct backlight_device *ibm_backlight_device;
0e501834
HMH		 6384
6385static enum tpacpi_brightness_access_mode brightness_mode =
6386 TPACPI_BRGHT_MODE_MAX;
6387
f74a27d4
HMH		 6388static unsigned int brightness_enable = 2; /* 2 = auto, 0 = no, 1 = yes */
6389
b21a15f6 6390static struct mutex brightness_mutex;
56b6aeb0 6391
0e501834
HMH		 6392/* NVRAM brightness access,
6393 * call with brightness_mutex held! */
6394static unsigned int tpacpi_brightness_nvram_get(void)
b21a15f6 6395{
0e501834 6396 u8 lnvram;
b21a15f6 6397
0e501834
HMH		 6398 lnvram = (nvram_read_byte(TP_NVRAM_ADDR_BRIGHTNESS)
6399 & TP_NVRAM_MASK_LEVEL_BRIGHTNESS)
6400 >> TP_NVRAM_POS_LEVEL_BRIGHTNESS;
77775838 6401 lnvram &= bright_maxlvl;
0e501834
HMH		 6402
6403 return lnvram;
6404}
6405
6406static void tpacpi_brightness_checkpoint_nvram(void)
6407{
6408 u8 lec = 0;
6409 u8 b_nvram;
6410
6411 if (brightness_mode != TPACPI_BRGHT_MODE_ECNVRAM)
6412 return;
6413
6414 vdbg_printk(TPACPI_DBG_BRGHT,
6415 "trying to checkpoint backlight level to NVRAM...\n");
6416
6417 if (mutex_lock_killable(&brightness_mutex) < 0)
6418 return;
6419
6420 if (unlikely(!acpi_ec_read(TP_EC_BACKLIGHT, &lec)))
6421 goto unlock;
6422 lec &= TP_EC_BACKLIGHT_LVLMSK;
6423 b_nvram = nvram_read_byte(TP_NVRAM_ADDR_BRIGHTNESS);
6424
6425 if (lec != ((b_nvram & TP_NVRAM_MASK_LEVEL_BRIGHTNESS)
6426 >> TP_NVRAM_POS_LEVEL_BRIGHTNESS)) {
6427 /* NVRAM needs update */
6428 b_nvram &= ~(TP_NVRAM_MASK_LEVEL_BRIGHTNESS <<
6429 TP_NVRAM_POS_LEVEL_BRIGHTNESS);
6430 b_nvram |= lec;
6431 nvram_write_byte(b_nvram, TP_NVRAM_ADDR_BRIGHTNESS);
6432 dbg_printk(TPACPI_DBG_BRGHT,
6433 "updated NVRAM backlight level to %u (0x%02x)\n",
6434 (unsigned int) lec, (unsigned int) b_nvram);
6435 } else
6436 vdbg_printk(TPACPI_DBG_BRGHT,
6437 "NVRAM backlight level already is %u (0x%02x)\n",
6438 (unsigned int) lec, (unsigned int) b_nvram);
6439
6440unlock:
6441 mutex_unlock(&brightness_mutex);
6442}
6443
6444
6445/* call with brightness_mutex held! */
6446static int tpacpi_brightness_get_raw(int *status)
6447{
6448 u8 lec = 0;
6449
6450 switch (brightness_mode) {
6451 case TPACPI_BRGHT_MODE_UCMS_STEP:
6452 *status = tpacpi_brightness_nvram_get();
6453 return 0;
6454 case TPACPI_BRGHT_MODE_EC:
6455 case TPACPI_BRGHT_MODE_ECNVRAM:
6456 if (unlikely(!acpi_ec_read(TP_EC_BACKLIGHT, &lec)))
2d5e94d7 6457 return -EIO;
0e501834
HMH		 6458 *status = lec;
6459 return 0;
6460 default:
6461 return -ENXIO;
b21a15f6 6462 }
0e501834
HMH		 6463}
6464
6465/* call with brightness_mutex held! */
6466/* do NOT call with illegal backlight level value */
6467static int tpacpi_brightness_set_ec(unsigned int value)
6468{
6469 u8 lec = 0;
6470
6471 if (unlikely(!acpi_ec_read(TP_EC_BACKLIGHT, &lec)))
6472 return -EIO;
6473
6474 if (unlikely(!acpi_ec_write(TP_EC_BACKLIGHT,
6475 (lec & TP_EC_BACKLIGHT_CMDMSK) |
6476 (value & TP_EC_BACKLIGHT_LVLMSK))))
6477 return -EIO;
6478
6479 return 0;
6480}
6481
6482/* call with brightness_mutex held! */
6483static int tpacpi_brightness_set_ucmsstep(unsigned int value)
6484{
6485 int cmos_cmd, inc;
6486 unsigned int current_value, i;
6487
6488 current_value = tpacpi_brightness_nvram_get();
6489
6490 if (value == current_value)
6491 return 0;
6492
6493 cmos_cmd = (value > current_value) ?
6494 TP_CMOS_BRIGHTNESS_UP :
6495 TP_CMOS_BRIGHTNESS_DOWN;
6496 inc = (value > current_value) ? 1 : -1;
6497
6498 for (i = current_value; i != value; i += inc)
6499 if (issue_thinkpad_cmos_command(cmos_cmd))
6500 return -EIO;
b21a15f6 6501
e11aecf1 6502 return 0;
b21a15f6
HMH		 6503}
6504
6505/* May return EINTR which can always be mapped to ERESTARTSYS */
0e501834 6506static int brightness_set(unsigned int value)
b21a15f6 6507{
0e501834 6508 int res;
b21a15f6 6509
bd3c7b9e 6510 if (value > bright_maxlvl)
b21a15f6
HMH		 6511 return -EINVAL;
6512
0e501834
HMH		 6513 vdbg_printk(TPACPI_DBG_BRGHT,
6514 "set backlight level to %d\n", value);
6515
7646ea88 6516 res = mutex_lock_killable(&brightness_mutex);
b21a15f6
HMH		 6517 if (res < 0)
6518 return res;
6519
0e501834
HMH		 6520 switch (brightness_mode) {
6521 case TPACPI_BRGHT_MODE_EC:
6522 case TPACPI_BRGHT_MODE_ECNVRAM:
6523 res = tpacpi_brightness_set_ec(value);
6524 break;
6525 case TPACPI_BRGHT_MODE_UCMS_STEP:
6526 res = tpacpi_brightness_set_ucmsstep(value);
6527 break;
6528 default:
6529 res = -ENXIO;
b21a15f6
HMH		 6530 }
6531
b21a15f6
HMH		 6532 mutex_unlock(&brightness_mutex);
6533 return res;
6534}
6535
6536/* sysfs backlight class ----------------------------------------------- */
6537
6538static int brightness_update_status(struct backlight_device *bd)
6539{
0e501834 6540 unsigned int level =
b21a15f6
HMH		 6541 (bd->props.fb_blank == FB_BLANK_UNBLANK &&
6542 bd->props.power == FB_BLANK_UNBLANK) ?
0e501834
HMH		 6543 bd->props.brightness : 0;
6544
6545 dbg_printk(TPACPI_DBG_BRGHT,
6546 "backlight: attempt to set level to %d\n",
6547 level);
6548
6549 /* it is the backlight class's job (caller) to handle
6550 * EINTR and other errors properly */
6551 return brightness_set(level);
b21a15f6
HMH		 6552}
6553
e11aecf1 6554static int brightness_get(struct backlight_device *bd)
a3f104c0 6555{
e11aecf1 6556 int status, res;
a3f104c0 6557
0e501834 6558 res = mutex_lock_killable(&brightness_mutex);
e11aecf1 6559 if (res < 0)
0e501834
HMH		 6560 return 0;
6561
6562 res = tpacpi_brightness_get_raw(&status);
6563
6564 mutex_unlock(&brightness_mutex);
6565
6566 if (res < 0)
6567 return 0;
e11e211a 6568
e11aecf1 6569 return status & TP_EC_BACKLIGHT_LVLMSK;
e11e211a
HMH		 6570}
6571
347a2686
HMH		 6572static void tpacpi_brightness_notify_change(void)
6573{
6574 backlight_force_update(ibm_backlight_device,
6575 BACKLIGHT_UPDATE_HOTKEY);
6576}
6577
acc2472e 6578static const struct backlight_ops ibm_backlight_data = {
35ff8b9f
HMH		 6579 .get_brightness = brightness_get,
6580 .update_status = brightness_update_status,
56b6aeb0 6581};
e11e211a 6582
b21a15f6 6583/* --------------------------------------------------------------------- */
e11e211a 6584
122f2672
HMH		 6585/*
6586 * Call _BCL method of video device. On some ThinkPads this will
6587 * switch the firmware to the ACPI brightness control mode.
6588 */
6589
77775838
HMH		 6590static int __init tpacpi_query_bcl_levels(acpi_handle handle)
6591{
6592 struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
6593 union acpi_object *obj;
46445b6b 6594 struct acpi_device *device, *child;
77775838
HMH		 6595 int rc;
6596
46445b6b
AL		 6597 if (acpi_bus_get_device(handle, &device))
6598 return 0;
6599
6600 rc = 0;
6601 list_for_each_entry(child, &device->children, node) {
6602 acpi_status status = acpi_evaluate_object(child->handle, "_BCL",
6603 NULL, &buffer);
6604 if (ACPI_FAILURE(status))
6605 continue;
6606
77775838
HMH		 6607 obj = (union acpi_object *)buffer.pointer;
6608 if (!obj || (obj->type != ACPI_TYPE_PACKAGE)) {
0978e012 6609 pr_err("Unknown _BCL data, please report this to %s\n",
46445b6b 6610 TPACPI_MAIL);
77775838
HMH		 6611 rc = 0;
6612 } else {
6613 rc = obj->package.count;
6614 }
46445b6b 6615 break;
77775838
HMH		 6616 }
6617
6618 kfree(buffer.pointer);
6619 return rc;
6620}
6621
77775838
HMH		 6622
6623/*
6624 * Returns 0 (no ACPI _BCL or _BCL invalid), or size of brightness map
6625 */
6626static unsigned int __init tpacpi_check_std_acpi_brightness_support(void)
6627{
122f2672 6628 acpi_handle video_device;
77775838 6629 int bcl_levels = 0;
77775838 6630
46445b6b 6631 tpacpi_acpi_handle_locate("video", NULL, &video_device);
122f2672
HMH		 6632 if (video_device)
6633 bcl_levels = tpacpi_query_bcl_levels(video_device);
77775838 6634
122f2672 6635 tp_features.bright_acpimode = (bcl_levels > 0);
77775838 6636
122f2672 6637 return (bcl_levels > 2) ? (bcl_levels - 2) : 0;
77775838
HMH		 6638}
6639
59fe4fe3
HMH		 6640/*
6641 * These are only useful for models that have only one possibility
6642 * of GPU. If the BIOS model handles both ATI and Intel, don't use
6643 * these quirks.
6644 */
6645#define TPACPI_BRGHT_Q_NOEC 0x0001 /* Must NOT use EC HBRV */
6646#define TPACPI_BRGHT_Q_EC 0x0002 /* Should or must use EC HBRV */
6647#define TPACPI_BRGHT_Q_ASK 0x8000 /* Ask for user report */
6648
6649static const struct tpacpi_quirk brightness_quirk_table[] __initconst = {
6650 /* Models with ATI GPUs known to require ECNVRAM mode */
6651 TPACPI_Q_IBM('1', 'Y', TPACPI_BRGHT_Q_EC), /* T43/p ATI */
6652
6da25bf5 6653 /* Models with ATI GPUs that can use ECNVRAM */
7d1894d8 6654 TPACPI_Q_IBM('1', 'R', TPACPI_BRGHT_Q_EC), /* R50,51 T40-42 */
59fe4fe3 6655 TPACPI_Q_IBM('1', 'Q', TPACPI_BRGHT_Q_ASK|TPACPI_BRGHT_Q_EC),
7d1894d8 6656 TPACPI_Q_IBM('7', '6', TPACPI_BRGHT_Q_EC), /* R52 */
59fe4fe3
HMH		 6657 TPACPI_Q_IBM('7', '8', TPACPI_BRGHT_Q_ASK|TPACPI_BRGHT_Q_EC),
6658
6da25bf5 6659 /* Models with Intel Extreme Graphics 2 */
7d1894d8 6660 TPACPI_Q_IBM('1', 'U', TPACPI_BRGHT_Q_NOEC), /* X40 */
a9f8eacc
HMH		 6661 TPACPI_Q_IBM('1', 'V', TPACPI_BRGHT_Q_ASK|TPACPI_BRGHT_Q_EC),
6662 TPACPI_Q_IBM('1', 'W', TPACPI_BRGHT_Q_ASK|TPACPI_BRGHT_Q_EC),
59fe4fe3
HMH		 6663
6664 /* Models with Intel GMA900 */
6665 TPACPI_Q_IBM('7', '0', TPACPI_BRGHT_Q_NOEC), /* T43, R52 */
6666 TPACPI_Q_IBM('7', '4', TPACPI_BRGHT_Q_NOEC), /* X41 */
6667 TPACPI_Q_IBM('7', '5', TPACPI_BRGHT_Q_NOEC), /* X41 Tablet */
6668};
6669
77775838
HMH		 6670/*
6671 * Returns < 0 for error, otherwise sets tp_features.bright_*
6672 * and bright_maxlvl.
6673 */
6674static void __init tpacpi_detect_brightness_capabilities(void)
6675{
6676 unsigned int b;
6677
6678 vdbg_printk(TPACPI_DBG_INIT,
6679 "detecting firmware brightness interface capabilities\n");
6680
6681 /* we could run a quirks check here (same table used by
6682 * brightness_init) if needed */
6683
6684 /*
6685 * We always attempt to detect acpi support, so as to switch
6686 * Lenovo Vista BIOS to ACPI brightness mode even if we are not
6687 * going to publish a backlight interface
6688 */
6689 b = tpacpi_check_std_acpi_brightness_support();
6690 switch (b) {
6691 case 16:
6692 bright_maxlvl = 15;
77775838
HMH		 6693 break;
6694 case 8:
6695 case 0:
6696 bright_maxlvl = 7;
77775838
HMH		 6697 break;
6698 default:
77775838
HMH		 6699 tp_features.bright_unkfw = 1;
6700 bright_maxlvl = b - 1;
6701 }
15c75626 6702 pr_debug("detected %u brightness levels\n", bright_maxlvl + 1);
77775838
HMH		 6703}
6704
a5763f22 6705static int __init brightness_init(struct ibm_init_struct *iibm)
56b6aeb0 6706{
a19a6ee6 6707 struct backlight_properties props;
56b6aeb0 6708 int b;
59fe4fe3 6709 unsigned long quirks;
56b6aeb0 6710
fe08bc4b
HMH		 6711 vdbg_printk(TPACPI_DBG_INIT, "initializing brightness subdriver\n");
6712
f432255e
HMH		 6713 mutex_init(&brightness_mutex);
6714
59fe4fe3
HMH		 6715 quirks = tpacpi_check_quirks(brightness_quirk_table,
6716 ARRAY_SIZE(brightness_quirk_table));
6717
77775838
HMH		 6718 /* tpacpi_detect_brightness_capabilities() must have run already */
6719
6720 /* if it is unknown, we don't handle it: it wouldn't be safe */
6721 if (tp_features.bright_unkfw)
6722 return 1;
2dba1b5d 6723
b5972796 6724 if (!brightness_enable) {
0e501834 6725 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_BRGHT,
b5972796
HMH		 6726 "brightness support disabled by "
6727 "module parameter\n");
6728 return 1;
6729 }
6730
b33c6ce5 6731 if (acpi_video_get_backlight_type() != acpi_backlight_vendor) {
217f0963 6732 if (brightness_enable > 1) {
0978e012
JP		 6733 pr_info("Standard ACPI backlight interface "
6734 "available, not loading native one\n");
217f0963
HMH		 6735 return 1;
6736 } else if (brightness_enable == 1) {
0978e012 6737 pr_warn("Cannot enable backlight brightness support, "
217f0963 6738 "ACPI is already handling it. Refer to the "
0978e012 6739 "acpi_backlight kernel parameter.\n");
217f0963
HMH		 6740 return 1;
6741 }
6742 } else if (tp_features.bright_acpimode && brightness_enable > 1) {
0978e012
JP		 6743 pr_notice("Standard ACPI backlight interface not "
6744 "available, thinkpad_acpi native "
6745 "brightness control enabled\n");
217f0963
HMH		 6746 }
6747
0e501834
HMH		 6748 /*
6749 * Check for module parameter bogosity, note that we
6750 * init brightness_mode to TPACPI_BRGHT_MODE_MAX in order to be
6751 * able to detect "unspecified"
6752 */
6753 if (brightness_mode > TPACPI_BRGHT_MODE_MAX)
6754 return -EINVAL;
24d3b774 6755
0e501834
HMH		 6756 /* TPACPI_BRGHT_MODE_AUTO not implemented yet, just use default */
6757 if (brightness_mode == TPACPI_BRGHT_MODE_AUTO ||
6758 brightness_mode == TPACPI_BRGHT_MODE_MAX) {
59fe4fe3
HMH		 6759 if (quirks & TPACPI_BRGHT_Q_EC)
6760 brightness_mode = TPACPI_BRGHT_MODE_ECNVRAM;
6761 else
0e501834 6762 brightness_mode = TPACPI_BRGHT_MODE_UCMS_STEP;
24d3b774 6763
0e501834 6764 dbg_printk(TPACPI_DBG_BRGHT,
59fe4fe3 6765 "driver auto-selected brightness_mode=%d\n",
0e501834
HMH		 6766 brightness_mode);
6767 }
24d3b774 6768
d7880f10 6769 /* Safety */
e28393c0 6770 if (!tpacpi_is_ibm() &&
d7880f10
HMH		 6771 (brightness_mode == TPACPI_BRGHT_MODE_ECNVRAM ||
6772 brightness_mode == TPACPI_BRGHT_MODE_EC))
6773 return -EINVAL;
6774
0e501834 6775 if (tpacpi_brightness_get_raw(&b) < 0)
24d3b774 6776 return 1;
56b6aeb0 6777
a19a6ee6 6778 memset(&props, 0, sizeof(struct backlight_properties));
bb7ca747 6779 props.type = BACKLIGHT_PLATFORM;
77775838
HMH		 6780 props.max_brightness = bright_maxlvl;
6781 props.brightness = b & TP_EC_BACKLIGHT_LVLMSK;
a19a6ee6
MG		 6782 ibm_backlight_device = backlight_device_register(TPACPI_BACKLIGHT_DEV_NAME,
6783 NULL, NULL,
6784 &ibm_backlight_data,
6785 &props);
56b6aeb0 6786 if (IS_ERR(ibm_backlight_device)) {
435c47e2
HMH		 6787 int rc = PTR_ERR(ibm_backlight_device);
6788 ibm_backlight_device = NULL;
0978e012 6789 pr_err("Could not register backlight device\n");
435c47e2 6790 return rc;
56b6aeb0 6791 }
0e501834
HMH		 6792 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_BRGHT,
6793 "brightness is supported\n");
56b6aeb0 6794
59fe4fe3 6795 if (quirks & TPACPI_BRGHT_Q_ASK) {
0978e012
JP		 6796 pr_notice("brightness: will use unverified default: "
6797 "brightness_mode=%d\n", brightness_mode);
6798 pr_notice("brightness: please report to %s whether it works well "
6799 "or not on your ThinkPad\n", TPACPI_MAIL);
59fe4fe3
HMH		 6800 }
6801
7d9745cf
HMH		 6802 /* Added by mistake in early 2007. Probably useless, but it could
6803 * be working around some unknown firmware problem where the value
6804 * read at startup doesn't match the real hardware state... so leave
6805 * it in place just in case */
56b6aeb0
HMH		 6806 backlight_update_status(ibm_backlight_device);
6807
347a2686
HMH		 6808 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_BRGHT,
6809 "brightness: registering brightness hotkeys "
6810 "as change notification\n");
6811 tpacpi_hotkey_driver_mask_set(hotkey_driver_mask
6812 | TP_ACPI_HKEY_BRGHTUP_MASK
3098064d 6813 | TP_ACPI_HKEY_BRGHTDWN_MASK);
56b6aeb0
HMH		 6814 return 0;
6815}
6816
fd3c3a42 6817static void brightness_suspend(void)
0e501834
HMH		 6818{
6819 tpacpi_brightness_checkpoint_nvram();
6820}
6821
6822static void brightness_shutdown(void)
6823{
6824 tpacpi_brightness_checkpoint_nvram();
6825}
6826
56b6aeb0
HMH		 6827static void brightness_exit(void)
6828{
6829 if (ibm_backlight_device) {
0e501834 6830 vdbg_printk(TPACPI_DBG_EXIT | TPACPI_DBG_BRGHT,
fe08bc4b 6831 "calling backlight_device_unregister()\n");
56b6aeb0 6832 backlight_device_unregister(ibm_backlight_device);
56b6aeb0 6833 }
0e501834
HMH		 6834
6835 tpacpi_brightness_checkpoint_nvram();
56b6aeb0
HMH		 6836}
6837
887965e6 6838static int brightness_read(struct seq_file *m)
56b6aeb0 6839{
56b6aeb0
HMH		 6840 int level;
6841
35ff8b9f
HMH		 6842 level = brightness_get(NULL);
6843 if (level < 0) {
887965e6 6844 seq_printf(m, "level:\t\tunreadable\n");
56b6aeb0 6845 } else {
887965e6
AD		 6846 seq_printf(m, "level:\t\t%d\n", level);
6847 seq_printf(m, "commands:\tup, down\n");
77775838
HMH		 6848 seq_printf(m, "commands:\tlevel <level> (<level> is 0-%d)\n",
6849 bright_maxlvl);
56b6aeb0
HMH		 6850 }
6851
887965e6 6852 return 0;
56b6aeb0
HMH		 6853}
6854
8acb0250
HM		 6855static int brightness_write(char *buf)
6856{
6857 int level;
4273af8d 6858 int rc;
1da177e4 6859 char *cmd;
1da177e4 6860
4273af8d
HMH		 6861 level = brightness_get(NULL);
6862 if (level < 0)
6863 return level;
78f81cc4 6864
4273af8d 6865 while ((cmd = next_cmd(&buf))) {
78f81cc4 6866 if (strlencmp(cmd, "up") == 0) {
77775838 6867 if (level < bright_maxlvl)
4273af8d 6868 level++;
78f81cc4 6869 } else if (strlencmp(cmd, "down") == 0) {
4273af8d
HMH		 6870 if (level > 0)
6871 level--;
6872 } else if (sscanf(cmd, "level %d", &level) == 1 &&
77775838 6873 level >= 0 && level <= bright_maxlvl) {
4273af8d 6874 /* new level set */
78f81cc4
BD		 6875 } else
6876 return -EINVAL;
78f81cc4
BD		 6877 }
6878
0e501834
HMH		 6879 tpacpi_disclose_usertask("procfs brightness",
6880 "set level to %d\n", level);
6881
4273af8d
HMH		 6882 /*
6883 * Now we know what the final level should be, so we try to set it.
6884 * Doing it this way makes the syscall restartable in case of EINTR
6885 */
6886 rc = brightness_set(level);
347a2686
HMH		 6887 if (!rc && ibm_backlight_device)
6888 backlight_force_update(ibm_backlight_device,
6889 BACKLIGHT_UPDATE_SYSFS);
72a979f0 6890 return (rc == -EINTR) ? -ERESTARTSYS : rc;
78f81cc4
BD		 6891}
6892
a5763f22
HMH		 6893static struct ibm_struct brightness_driver_data = {
6894 .name = "brightness",
6895 .read = brightness_read,
6896 .write = brightness_write,
6897 .exit = brightness_exit,
0e501834
HMH		 6898 .suspend = brightness_suspend,
6899 .shutdown = brightness_shutdown,
a5763f22
HMH		 6900};
6901
56b6aeb0
HMH		 6902/*************************************************************************
6903 * Volume subdriver
6904 */
fb87a811 6905
329e4e18
HMH		 6906/*
6907 * IBM ThinkPads have a simple volume controller with MUTE gating.
6908 * Very early Lenovo ThinkPads follow the IBM ThinkPad spec.
6909 *
6910 * Since the *61 series (and probably also the later *60 series), Lenovo
6911 * ThinkPads only implement the MUTE gate.
6912 *
6913 * EC register 0x30
6914 * Bit 6: MUTE (1 mutes sound)
6915 * Bit 3-0: Volume
6916 * Other bits should be zero as far as we know.
6917 *
6918 * This is also stored in CMOS NVRAM, byte 0x60, bit 6 (MUTE), and
6919 * bits 3-0 (volume). Other bits in NVRAM may have other functions,
6920 * such as bit 7 which is used to detect repeated presses of MUTE,
6921 * and we leave them unchanged.
9a417ec0
AL		 6922 *
6923 * On newer Lenovo ThinkPads, the EC can automatically change the volume
6924 * in response to user input. Unfortunately, this rarely works well.
6925 * The laptop changes the state of its internal MUTE gate and, on some
6926 * models, sends KEY_MUTE, causing any user code that responds to the
6927 * mute button to get confused. The hardware MUTE gate is also
6928 * unnecessary, since user code can handle the mute button without
6929 * kernel or EC help.
6930 *
6931 * To avoid confusing userspace, we simply disable all EC-based mute
6932 * and volume controls when possible.
329e4e18
HMH		 6933 */
6934
ff850c33
HMH		 6935#ifdef CONFIG_THINKPAD_ACPI_ALSA_SUPPORT
6936
0d204c34
HMH		 6937#define TPACPI_ALSA_DRVNAME "ThinkPad EC"
6938#define TPACPI_ALSA_SHRTNAME "ThinkPad Console Audio Control"
6939#define TPACPI_ALSA_MIXERNAME TPACPI_ALSA_SHRTNAME
6940
cab66613
TI		 6941#if SNDRV_CARDS <= 32
6942#define DEFAULT_ALSA_IDX ~((1 << (SNDRV_CARDS - 3)) - 1)
6943#else
6944#define DEFAULT_ALSA_IDX ~((1 << (32 - 3)) - 1)
6945#endif
6946static int alsa_index = DEFAULT_ALSA_IDX; /* last three slots */
0d204c34 6947static char *alsa_id = "ThinkPadEC";
90ab5ee9 6948static bool alsa_enable = SNDRV_DEFAULT_ENABLE1;
0d204c34
HMH		 6949
6950struct tpacpi_alsa_data {
6951 struct snd_card *card;
6952 struct snd_ctl_elem_id *ctl_mute_id;
6953 struct snd_ctl_elem_id *ctl_vol_id;
6954};
6955
6956static struct snd_card *alsa_card;
6957
329e4e18
HMH		 6958enum {
6959 TP_EC_AUDIO = 0x30,
6960
6961 /* TP_EC_AUDIO bits */
6962 TP_EC_AUDIO_MUTESW = 6,
6963
6964 /* TP_EC_AUDIO bitmasks */
6965 TP_EC_AUDIO_LVL_MSK = 0x0F,
6966 TP_EC_AUDIO_MUTESW_MSK = (1 << TP_EC_AUDIO_MUTESW),
6967
6968 /* Maximum volume */
6969 TP_EC_VOLUME_MAX = 14,
6970};
6971
6972enum tpacpi_volume_access_mode {
6973 TPACPI_VOL_MODE_AUTO = 0, /* Not implemented yet */
6974 TPACPI_VOL_MODE_EC, /* Pure EC control */
6975 TPACPI_VOL_MODE_UCMS_STEP, /* UCMS step-based control: N/A */
6976 TPACPI_VOL_MODE_ECNVRAM, /* EC control w/ NVRAM store */
6977 TPACPI_VOL_MODE_MAX
6978};
6979
a112ceee
HMH		 6980enum tpacpi_volume_capabilities {
6981 TPACPI_VOL_CAP_AUTO = 0, /* Use white/blacklist */
6982 TPACPI_VOL_CAP_VOLMUTE, /* Output vol and mute */
6983 TPACPI_VOL_CAP_MUTEONLY, /* Output mute only */
6984 TPACPI_VOL_CAP_MAX
6985};
6986
9a417ec0
AL		 6987enum tpacpi_mute_btn_mode {
6988 TP_EC_MUTE_BTN_LATCH = 0, /* Mute mutes; up/down unmutes */
6989 /* We don't know what mode 1 is. */
6990 TP_EC_MUTE_BTN_NONE = 2, /* Mute and up/down are just keys */
6991 TP_EC_MUTE_BTN_TOGGLE = 3, /* Mute toggles; up/down unmutes */
6992};
6993
329e4e18
HMH		 6994static enum tpacpi_volume_access_mode volume_mode =
6995 TPACPI_VOL_MODE_MAX;
6996
a112ceee 6997static enum tpacpi_volume_capabilities volume_capabilities;
90ab5ee9 6998static bool volume_control_allowed;
9a417ec0
AL		 6999static bool software_mute_requested = true;
7000static bool software_mute_active;
7001static int software_mute_orig_mode;
f74a27d4 7002
329e4e18
HMH		 7003/*
7004 * Used to syncronize writers to TP_EC_AUDIO and
7005 * TP_NVRAM_ADDR_MIXER, as we need to do read-modify-write
7006 */
7007static struct mutex volume_mutex;
7008
7009static void tpacpi_volume_checkpoint_nvram(void)
78f81cc4 7010{
329e4e18
HMH		 7011 u8 lec = 0;
7012 u8 b_nvram;
a112ceee 7013 u8 ec_mask;
329e4e18
HMH		 7014
7015 if (volume_mode != TPACPI_VOL_MODE_ECNVRAM)
7016 return;
c7ac6291
HMH		 7017 if (!volume_control_allowed)
7018 return;
9a417ec0
AL		 7019 if (software_mute_active)
7020 return;
329e4e18
HMH		 7021
7022 vdbg_printk(TPACPI_DBG_MIXER,
7023 "trying to checkpoint mixer state to NVRAM...\n");
78f81cc4 7024
a112ceee
HMH		 7025 if (tp_features.mixer_no_level_control)
7026 ec_mask = TP_EC_AUDIO_MUTESW_MSK;
7027 else
7028 ec_mask = TP_EC_AUDIO_MUTESW_MSK | TP_EC_AUDIO_LVL_MSK;
7029
329e4e18
HMH		 7030 if (mutex_lock_killable(&volume_mutex) < 0)
7031 return;
7032
7033 if (unlikely(!acpi_ec_read(TP_EC_AUDIO, &lec)))
7034 goto unlock;
7035 lec &= ec_mask;
7036 b_nvram = nvram_read_byte(TP_NVRAM_ADDR_MIXER);
7037
7038 if (lec != (b_nvram & ec_mask)) {
7039 /* NVRAM needs update */
7040 b_nvram &= ~ec_mask;
7041 b_nvram |= lec;
7042 nvram_write_byte(b_nvram, TP_NVRAM_ADDR_MIXER);
7043 dbg_printk(TPACPI_DBG_MIXER,
7044 "updated NVRAM mixer status to 0x%02x (0x%02x)\n",
7045 (unsigned int) lec, (unsigned int) b_nvram);
78f81cc4 7046 } else {
329e4e18
HMH		 7047 vdbg_printk(TPACPI_DBG_MIXER,
7048 "NVRAM mixer status already is 0x%02x (0x%02x)\n",
7049 (unsigned int) lec, (unsigned int) b_nvram);
78f81cc4
BD		 7050 }
7051
329e4e18
HMH		 7052unlock:
7053 mutex_unlock(&volume_mutex);
78f81cc4
BD		 7054}
7055
329e4e18 7056static int volume_get_status_ec(u8 *status)
78f81cc4 7057{
329e4e18 7058 u8 s;
78f81cc4 7059
329e4e18
HMH		 7060 if (!acpi_ec_read(TP_EC_AUDIO, &s))
7061 return -EIO;
78f81cc4 7062
329e4e18 7063 *status = s;
1da177e4 7064
329e4e18 7065 dbg_printk(TPACPI_DBG_MIXER, "status 0x%02x\n", s);
35ff8b9f 7066
329e4e18
HMH		 7067 return 0;
7068}
78f81cc4 7069
329e4e18
HMH		 7070static int volume_get_status(u8 *status)
7071{
7072 return volume_get_status_ec(status);
7073}
78f81cc4 7074
329e4e18
HMH		 7075static int volume_set_status_ec(const u8 status)
7076{
7077 if (!acpi_ec_write(TP_EC_AUDIO, status))
7078 return -EIO;
78f81cc4 7079
329e4e18
HMH		 7080 dbg_printk(TPACPI_DBG_MIXER, "set EC mixer to 0x%02x\n", status);
7081
9a417ec0
AL		 7082 /*
7083 * On X200s, and possibly on others, it can take a while for
7084 * reads to become correct.
7085 */
7086 msleep(1);
7087
329e4e18
HMH		 7088 return 0;
7089}
7090
7091static int volume_set_status(const u8 status)
7092{
7093 return volume_set_status_ec(status);
7094}
7095
88cc8377
HMH		 7096/* returns < 0 on error, 0 on no change, 1 on change */
7097static int __volume_set_mute_ec(const bool mute)
329e4e18
HMH		 7098{
7099 int rc;
7100 u8 s, n;
7101
7102 if (mutex_lock_killable(&volume_mutex) < 0)
7103 return -EINTR;
7104
7105 rc = volume_get_status_ec(&s);
7106 if (rc)
7107 goto unlock;
7108
7109 n = (mute) ? s | TP_EC_AUDIO_MUTESW_MSK :
7110 s & ~TP_EC_AUDIO_MUTESW_MSK;
7111
88cc8377 7112 if (n != s) {
329e4e18 7113 rc = volume_set_status_ec(n);
88cc8377
HMH		 7114 if (!rc)
7115 rc = 1;
7116 }
329e4e18
HMH		 7117
7118unlock:
7119 mutex_unlock(&volume_mutex);
7120 return rc;
7121}
7122
88cc8377
HMH		 7123static int volume_alsa_set_mute(const bool mute)
7124{
7125 dbg_printk(TPACPI_DBG_MIXER, "ALSA: trying to %smute\n",
7126 (mute) ? "" : "un");
7127 return __volume_set_mute_ec(mute);
7128}
7129
329e4e18
HMH		 7130static int volume_set_mute(const bool mute)
7131{
88cc8377
HMH		 7132 int rc;
7133
329e4e18
HMH		 7134 dbg_printk(TPACPI_DBG_MIXER, "trying to %smute\n",
7135 (mute) ? "" : "un");
88cc8377
HMH		 7136
7137 rc = __volume_set_mute_ec(mute);
7138 return (rc < 0) ? rc : 0;
329e4e18
HMH		 7139}
7140
88cc8377
HMH		 7141/* returns < 0 on error, 0 on no change, 1 on change */
7142static int __volume_set_volume_ec(const u8 vol)
329e4e18
HMH		 7143{
7144 int rc;
7145 u8 s, n;
7146
7147 if (vol > TP_EC_VOLUME_MAX)
7148 return -EINVAL;
7149
7150 if (mutex_lock_killable(&volume_mutex) < 0)
7151 return -EINTR;
7152
7153 rc = volume_get_status_ec(&s);
7154 if (rc)
7155 goto unlock;
7156
7157 n = (s & ~TP_EC_AUDIO_LVL_MSK) | vol;
7158
88cc8377 7159 if (n != s) {
329e4e18 7160 rc = volume_set_status_ec(n);
88cc8377
HMH		 7161 if (!rc)
7162 rc = 1;
7163 }
329e4e18
HMH		 7164
7165unlock:
7166 mutex_unlock(&volume_mutex);
7167 return rc;
7168}
7169
9a417ec0
AL		 7170static int volume_set_software_mute(bool startup)
7171{
7172 int result;
7173
7174 if (!tpacpi_is_lenovo())
7175 return -ENODEV;
7176
7177 if (startup) {
7178 if (!acpi_evalf(ec_handle, &software_mute_orig_mode,
7179 "HAUM", "qd"))
7180 return -EIO;
7181
7182 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER,
7183 "Initial HAUM setting was %d\n",
7184 software_mute_orig_mode);
7185 }
7186
7187 if (!acpi_evalf(ec_handle, &result, "SAUM", "qdd",
7188 (int)TP_EC_MUTE_BTN_NONE))
7189 return -EIO;
7190
7191 if (result != TP_EC_MUTE_BTN_NONE)
7192 pr_warn("Unexpected SAUM result %d\n",
7193 result);
7194
7195 /*
7196 * In software mute mode, the standard codec controls take
7197 * precendence, so we unmute the ThinkPad HW switch at
7198 * startup. Just on case there are SAUM-capable ThinkPads
7199 * with level controls, set max HW volume as well.
7200 */
7201 if (tp_features.mixer_no_level_control)
7202 result = volume_set_mute(false);
7203 else
7204 result = volume_set_status(TP_EC_VOLUME_MAX);
7205
7206 if (result != 0)
7207 pr_warn("Failed to unmute the HW mute switch\n");
7208
7209 return 0;
7210}
7211
7212static void volume_exit_software_mute(void)
7213{
7214 int r;
7215
7216 if (!acpi_evalf(ec_handle, &r, "SAUM", "qdd", software_mute_orig_mode)
7217 || r != software_mute_orig_mode)
7218 pr_warn("Failed to restore mute mode\n");
7219}
7220
88cc8377 7221static int volume_alsa_set_volume(const u8 vol)
329e4e18
HMH		 7222{
7223 dbg_printk(TPACPI_DBG_MIXER,
88cc8377
HMH		 7224 "ALSA: trying to set volume level to %hu\n", vol);
7225 return __volume_set_volume_ec(vol);
329e4e18
HMH		 7226}
7227
0d204c34
HMH		 7228static void volume_alsa_notify_change(void)
7229{
7230 struct tpacpi_alsa_data *d;
7231
7232 if (alsa_card && alsa_card->private_data) {
7233 d = alsa_card->private_data;
7234 if (d->ctl_mute_id)
7235 snd_ctl_notify(alsa_card,
7236 SNDRV_CTL_EVENT_MASK_VALUE,
7237 d->ctl_mute_id);
7238 if (d->ctl_vol_id)
7239 snd_ctl_notify(alsa_card,
7240 SNDRV_CTL_EVENT_MASK_VALUE,
7241 d->ctl_vol_id);
7242 }
7243}
7244
7245static int volume_alsa_vol_info(struct snd_kcontrol *kcontrol,
7246 struct snd_ctl_elem_info *uinfo)
7247{
7248 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
7249 uinfo->count = 1;
7250 uinfo->value.integer.min = 0;
7251 uinfo->value.integer.max = TP_EC_VOLUME_MAX;
7252 return 0;
7253}
7254
7255static int volume_alsa_vol_get(struct snd_kcontrol *kcontrol,
7256 struct snd_ctl_elem_value *ucontrol)
7257{
7258 u8 s;
7259 int rc;
7260
7261 rc = volume_get_status(&s);
7262 if (rc < 0)
7263 return rc;
7264
7265 ucontrol->value.integer.value[0] = s & TP_EC_AUDIO_LVL_MSK;
7266 return 0;
7267}
7268
7269static int volume_alsa_vol_put(struct snd_kcontrol *kcontrol,
7270 struct snd_ctl_elem_value *ucontrol)
7271{
38e11cde
HMH		 7272 tpacpi_disclose_usertask("ALSA", "set volume to %ld\n",
7273 ucontrol->value.integer.value[0]);
88cc8377 7274 return volume_alsa_set_volume(ucontrol->value.integer.value[0]);
0d204c34
HMH		 7275}
7276
7277#define volume_alsa_mute_info snd_ctl_boolean_mono_info
7278
7279static int volume_alsa_mute_get(struct snd_kcontrol *kcontrol,
7280 struct snd_ctl_elem_value *ucontrol)
7281{
7282 u8 s;
7283 int rc;
7284
7285 rc = volume_get_status(&s);
7286 if (rc < 0)
7287 return rc;
7288
7289 ucontrol->value.integer.value[0] =
7290 (s & TP_EC_AUDIO_MUTESW_MSK) ? 0 : 1;
7291 return 0;
7292}
7293
7294static int volume_alsa_mute_put(struct snd_kcontrol *kcontrol,
7295 struct snd_ctl_elem_value *ucontrol)
7296{
38e11cde
HMH		 7297 tpacpi_disclose_usertask("ALSA", "%smute\n",
7298 ucontrol->value.integer.value[0] ?
7299 "un" : "");
88cc8377 7300 return volume_alsa_set_mute(!ucontrol->value.integer.value[0]);
0d204c34
HMH		 7301}
7302
c3aa4723 7303static struct snd_kcontrol_new volume_alsa_control_vol __initdata = {
0d204c34
HMH		 7304 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
7305 .name = "Console Playback Volume",
7306 .index = 0,
7307 .access = SNDRV_CTL_ELEM_ACCESS_READ,
7308 .info = volume_alsa_vol_info,
7309 .get = volume_alsa_vol_get,
7310};
7311
c3aa4723 7312static struct snd_kcontrol_new volume_alsa_control_mute __initdata = {
0d204c34
HMH		 7313 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
7314 .name = "Console Playback Switch",
7315 .index = 0,
7316 .access = SNDRV_CTL_ELEM_ACCESS_READ,
7317 .info = volume_alsa_mute_info,
7318 .get = volume_alsa_mute_get,
7319};
7320
fd3c3a42 7321static void volume_suspend(void)
329e4e18
HMH		 7322{
7323 tpacpi_volume_checkpoint_nvram();
7324}
7325
0d204c34
HMH		 7326static void volume_resume(void)
7327{
9a417ec0
AL		 7328 if (software_mute_active) {
7329 if (volume_set_software_mute(false) < 0)
7330 pr_warn("Failed to restore software mute\n");
7331 } else {
7332 volume_alsa_notify_change();
7333 }
0d204c34
HMH		 7334}
7335
329e4e18
HMH		 7336static void volume_shutdown(void)
7337{
7338 tpacpi_volume_checkpoint_nvram();
7339}
7340
7341static void volume_exit(void)
7342{
0d204c34
HMH		 7343 if (alsa_card) {
7344 snd_card_free(alsa_card);
7345 alsa_card = NULL;
7346 }
7347
329e4e18 7348 tpacpi_volume_checkpoint_nvram();
9a417ec0
AL		 7349
7350 if (software_mute_active)
7351 volume_exit_software_mute();
329e4e18
HMH		 7352}
7353
0d204c34
HMH		 7354static int __init volume_create_alsa_mixer(void)
7355{
7356 struct snd_card *card;
7357 struct tpacpi_alsa_data *data;
7358 struct snd_kcontrol *ctl_vol;
7359 struct snd_kcontrol *ctl_mute;
7360 int rc;
7361
89235e55
TI		 7362 rc = snd_card_new(&tpacpi_pdev->dev,
7363 alsa_index, alsa_id, THIS_MODULE,
7364 sizeof(struct tpacpi_alsa_data), &card);
74c75c18 7365 if (rc < 0 || !card) {
0978e012 7366 pr_err("Failed to create ALSA card structures: %d\n", rc);
74c75c18
HMH		 7367 return 1;
7368 }
0d204c34
HMH		 7369
7370 BUG_ON(!card->private_data);
7371 data = card->private_data;
7372 data->card = card;
7373
7374 strlcpy(card->driver, TPACPI_ALSA_DRVNAME,
7375 sizeof(card->driver));
7376 strlcpy(card->shortname, TPACPI_ALSA_SHRTNAME,
7377 sizeof(card->shortname));
7378 snprintf(card->mixername, sizeof(card->mixername), "ThinkPad EC %s",
7379 (thinkpad_id.ec_version_str) ?
7380 thinkpad_id.ec_version_str : "(unknown)");
7381 snprintf(card->longname, sizeof(card->longname),
7382 "%s at EC reg 0x%02x, fw %s", card->shortname, TP_EC_AUDIO,
7383 (thinkpad_id.ec_version_str) ?
7384 thinkpad_id.ec_version_str : "unknown");
7385
7386 if (volume_control_allowed) {
7387 volume_alsa_control_vol.put = volume_alsa_vol_put;
7388 volume_alsa_control_vol.access =
7389 SNDRV_CTL_ELEM_ACCESS_READWRITE;
7390
7391 volume_alsa_control_mute.put = volume_alsa_mute_put;
7392 volume_alsa_control_mute.access =
7393 SNDRV_CTL_ELEM_ACCESS_READWRITE;
7394 }
7395
7396 if (!tp_features.mixer_no_level_control) {
7397 ctl_vol = snd_ctl_new1(&volume_alsa_control_vol, NULL);
7398 rc = snd_ctl_add(card, ctl_vol);
7399 if (rc < 0) {
0978e012
JP		 7400 pr_err("Failed to create ALSA volume control: %d\n",
7401 rc);
74c75c18 7402 goto err_exit;
78f81cc4 7403 }
0d204c34
HMH		 7404 data->ctl_vol_id = &ctl_vol->id;
7405 }
78f81cc4 7406
0d204c34
HMH		 7407 ctl_mute = snd_ctl_new1(&volume_alsa_control_mute, NULL);
7408 rc = snd_ctl_add(card, ctl_mute);
7409 if (rc < 0) {
0978e012 7410 pr_err("Failed to create ALSA mute control: %d\n", rc);
74c75c18 7411 goto err_exit;
0d204c34
HMH		 7412 }
7413 data->ctl_mute_id = &ctl_mute->id;
35ff8b9f 7414
0d204c34 7415 rc = snd_card_register(card);
0d204c34 7416 if (rc < 0) {
0978e012 7417 pr_err("Failed to register ALSA card: %d\n", rc);
74c75c18 7418 goto err_exit;
0d204c34
HMH		 7419 }
7420
7421 alsa_card = card;
74c75c18
HMH		 7422 return 0;
7423
7424err_exit:
7425 snd_card_free(card);
7426 return 1;
0d204c34
HMH		 7427}
7428
a112ceee
HMH		 7429#define TPACPI_VOL_Q_MUTEONLY 0x0001 /* Mute-only control available */
7430#define TPACPI_VOL_Q_LEVEL 0x0002 /* Volume control available */
7431
7432static const struct tpacpi_quirk volume_quirk_table[] __initconst = {
7433 /* Whitelist volume level on all IBM by default */
7434 { .vendor = PCI_VENDOR_ID_IBM,
7435 .bios = TPACPI_MATCH_ANY,
7436 .ec = TPACPI_MATCH_ANY,
7437 .quirks = TPACPI_VOL_Q_LEVEL },
7438
7439 /* Lenovo models with volume control (needs confirmation) */
7440 TPACPI_QEC_LNV('7', 'C', TPACPI_VOL_Q_LEVEL), /* R60/i */
7441 TPACPI_QEC_LNV('7', 'E', TPACPI_VOL_Q_LEVEL), /* R60e/i */
7442 TPACPI_QEC_LNV('7', '9', TPACPI_VOL_Q_LEVEL), /* T60/p */
7443 TPACPI_QEC_LNV('7', 'B', TPACPI_VOL_Q_LEVEL), /* X60/s */
7444 TPACPI_QEC_LNV('7', 'J', TPACPI_VOL_Q_LEVEL), /* X60t */
7445 TPACPI_QEC_LNV('7', '7', TPACPI_VOL_Q_LEVEL), /* Z60 */
7446 TPACPI_QEC_LNV('7', 'F', TPACPI_VOL_Q_LEVEL), /* Z61 */
7447
7448 /* Whitelist mute-only on all Lenovo by default */
7449 { .vendor = PCI_VENDOR_ID_LENOVO,
7450 .bios = TPACPI_MATCH_ANY,
7451 .ec = TPACPI_MATCH_ANY,
7452 .quirks = TPACPI_VOL_Q_MUTEONLY }
7453};
7454
329e4e18
HMH		 7455static int __init volume_init(struct ibm_init_struct *iibm)
7456{
a112ceee 7457 unsigned long quirks;
0d204c34 7458 int rc;
a112ceee 7459
329e4e18
HMH		 7460 vdbg_printk(TPACPI_DBG_INIT, "initializing volume subdriver\n");
7461
7462 mutex_init(&volume_mutex);
7463
7464 /*
7465 * Check for module parameter bogosity, note that we
7466 * init volume_mode to TPACPI_VOL_MODE_MAX in order to be
7467 * able to detect "unspecified"
7468 */
7469 if (volume_mode > TPACPI_VOL_MODE_MAX)
7470 return -EINVAL;
7471
7472 if (volume_mode == TPACPI_VOL_MODE_UCMS_STEP) {
0978e012
JP		 7473 pr_err("UCMS step volume mode not implemented, "
7474 "please contact %s\n", TPACPI_MAIL);
329e4e18
HMH		 7475 return 1;
7476 }
7477
a112ceee
HMH		 7478 if (volume_capabilities >= TPACPI_VOL_CAP_MAX)
7479 return -EINVAL;
7480
0d204c34
HMH		 7481 /*
7482 * The ALSA mixer is our primary interface.
7483 * When disabled, don't install the subdriver at all
7484 */
7485 if (!alsa_enable) {
7486 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER,
7487 "ALSA mixer disabled by parameter, "
7488 "not loading volume subdriver...\n");
7489 return 1;
7490 }
7491
a112ceee
HMH		 7492 quirks = tpacpi_check_quirks(volume_quirk_table,
7493 ARRAY_SIZE(volume_quirk_table));
7494
7495 switch (volume_capabilities) {
7496 case TPACPI_VOL_CAP_AUTO:
7497 if (quirks & TPACPI_VOL_Q_MUTEONLY)
7498 tp_features.mixer_no_level_control = 1;
7499 else if (quirks & TPACPI_VOL_Q_LEVEL)
7500 tp_features.mixer_no_level_control = 0;
7501 else
7502 return 1; /* no mixer */
7503 break;
7504 case TPACPI_VOL_CAP_VOLMUTE:
7505 tp_features.mixer_no_level_control = 0;
7506 break;
7507 case TPACPI_VOL_CAP_MUTEONLY:
7508 tp_features.mixer_no_level_control = 1;
7509 break;
7510 default:
7511 return 1;
7512 }
7513
7514 if (volume_capabilities != TPACPI_VOL_CAP_AUTO)
7515 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER,
7516 "using user-supplied volume_capabilities=%d\n",
7517 volume_capabilities);
7518
329e4e18
HMH		 7519 if (volume_mode == TPACPI_VOL_MODE_AUTO ||
7520 volume_mode == TPACPI_VOL_MODE_MAX) {
7521 volume_mode = TPACPI_VOL_MODE_ECNVRAM;
7522
7523 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER,
7524 "driver auto-selected volume_mode=%d\n",
7525 volume_mode);
7526 } else {
7527 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER,
7528 "using user-supplied volume_mode=%d\n",
7529 volume_mode);
7530 }
7531
7532 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER,
a112ceee
HMH		 7533 "mute is supported, volume control is %s\n",
7534 str_supported(!tp_features.mixer_no_level_control));
329e4e18 7535
9a417ec0
AL		 7536 if (software_mute_requested && volume_set_software_mute(true) == 0) {
7537 software_mute_active = true;
7538 } else {
7539 rc = volume_create_alsa_mixer();
7540 if (rc) {
7541 pr_err("Could not create the ALSA mixer interface\n");
7542 return rc;
7543 }
0d204c34 7544
9a417ec0
AL		 7545 pr_info("Console audio control enabled, mode: %s\n",
7546 (volume_control_allowed) ?
7547 "override (read/write)" :
7548 "monitor (read only)");
7549 }
c7ac6291 7550
0d204c34
HMH		 7551 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER,
7552 "registering volume hotkeys as change notification\n");
7553 tpacpi_hotkey_driver_mask_set(hotkey_driver_mask
7554 | TP_ACPI_HKEY_VOLUP_MASK
7555 | TP_ACPI_HKEY_VOLDWN_MASK
7556 | TP_ACPI_HKEY_MUTE_MASK);
7557
329e4e18
HMH		 7558 return 0;
7559}
f74a27d4 7560
887965e6 7561static int volume_read(struct seq_file *m)
78f81cc4 7562{
329e4e18 7563 u8 status;
78f81cc4 7564
329e4e18 7565 if (volume_get_status(&status) < 0) {
887965e6 7566 seq_printf(m, "level:\t\tunreadable\n");
78f81cc4 7567 } else {
a112ceee 7568 if (tp_features.mixer_no_level_control)
887965e6 7569 seq_printf(m, "level:\t\tunsupported\n");
a112ceee 7570 else
887965e6 7571 seq_printf(m, "level:\t\t%d\n",
a112ceee
HMH		 7572 status & TP_EC_AUDIO_LVL_MSK);
7573
887965e6 7574 seq_printf(m, "mute:\t\t%s\n",
329e4e18 7575 onoff(status, TP_EC_AUDIO_MUTESW));
a112ceee 7576
c7ac6291 7577 if (volume_control_allowed) {
887965e6 7578 seq_printf(m, "commands:\tunmute, mute\n");
c7ac6291 7579 if (!tp_features.mixer_no_level_control) {
887965e6 7580 seq_printf(m,
c7ac6291 7581 "commands:\tup, down\n");
887965e6 7582 seq_printf(m,
c7ac6291
HMH		 7583 "commands:\tlevel <level>"
7584 " (<level> is 0-%d)\n",
7585 TP_EC_VOLUME_MAX);
7586 }
78f81cc4
BD		 7587 }
7588 }
7589
7590 return 0;
7591}
7592
78f81cc4
BD		 7593static int volume_write(char *buf)
7594{
329e4e18
HMH		 7595 u8 s;
7596 u8 new_level, new_mute;
7597 int l;
78f81cc4 7598 char *cmd;
329e4e18 7599 int rc;
78f81cc4 7600
c7ac6291
HMH		 7601 /*
7602 * We do allow volume control at driver startup, so that the
7603 * user can set initial state through the volume=... parameter hack.
7604 */
7605 if (!volume_control_allowed && tpacpi_lifecycle != TPACPI_LIFE_INIT) {
7606 if (unlikely(!tp_warned.volume_ctrl_forbidden)) {
7607 tp_warned.volume_ctrl_forbidden = 1;
0978e012
JP		 7608 pr_notice("Console audio control in monitor mode, "
7609 "changes are not allowed\n");
7610 pr_notice("Use the volume_control=1 module parameter "
7611 "to enable volume control\n");
c7ac6291
HMH		 7612 }
7613 return -EPERM;
7614 }
7615
329e4e18
HMH		 7616 rc = volume_get_status(&s);
7617 if (rc < 0)
7618 return rc;
78f81cc4 7619
329e4e18
HMH		 7620 new_level = s & TP_EC_AUDIO_LVL_MSK;
7621 new_mute = s & TP_EC_AUDIO_MUTESW_MSK;
7622
7623 while ((cmd = next_cmd(&buf))) {
a112ceee
HMH		 7624 if (!tp_features.mixer_no_level_control) {
7625 if (strlencmp(cmd, "up") == 0) {
7626 if (new_mute)
7627 new_mute = 0;
7628 else if (new_level < TP_EC_VOLUME_MAX)
7629 new_level++;
7630 continue;
7631 } else if (strlencmp(cmd, "down") == 0) {
7632 if (new_mute)
7633 new_mute = 0;
7634 else if (new_level > 0)
7635 new_level--;
7636 continue;
7637 } else if (sscanf(cmd, "level %u", &l) == 1 &&
7638 l >= 0 && l <= TP_EC_VOLUME_MAX) {
7639 new_level = l;
7640 continue;
7641 }
7642 }
7643 if (strlencmp(cmd, "mute") == 0)
329e4e18 7644 new_mute = TP_EC_AUDIO_MUTESW_MSK;
a112ceee
HMH		 7645 else if (strlencmp(cmd, "unmute") == 0)
7646 new_mute = 0;
7647 else
1da177e4 7648 return -EINVAL;
329e4e18 7649 }
1da177e4 7650
a112ceee
HMH		 7651 if (tp_features.mixer_no_level_control) {
7652 tpacpi_disclose_usertask("procfs volume", "%smute\n",
7653 new_mute ? "" : "un");
7654 rc = volume_set_mute(!!new_mute);
7655 } else {
7656 tpacpi_disclose_usertask("procfs volume",
7657 "%smute and set level to %d\n",
7658 new_mute ? "" : "un", new_level);
7659 rc = volume_set_status(new_mute | new_level);
7660 }
0d204c34 7661 volume_alsa_notify_change();
78f81cc4 7662
329e4e18 7663 return (rc == -EINTR) ? -ERESTARTSYS : rc;
78f81cc4
BD		 7664}
7665
a5763f22
HMH		 7666static struct ibm_struct volume_driver_data = {
7667 .name = "volume",
7668 .read = volume_read,
7669 .write = volume_write,
329e4e18
HMH		 7670 .exit = volume_exit,
7671 .suspend = volume_suspend,
0d204c34 7672 .resume = volume_resume,
329e4e18 7673 .shutdown = volume_shutdown,
a5763f22 7674};
56b6aeb0 7675
ff850c33
HMH		 7676#else /* !CONFIG_THINKPAD_ACPI_ALSA_SUPPORT */
7677
7678#define alsa_card NULL
7679
7680static void inline volume_alsa_notify_change(void)
7681{
7682}
7683
7684static int __init volume_init(struct ibm_init_struct *iibm)
7685{
0978e012 7686 pr_info("volume: disabled as there is no ALSA support in this kernel\n");
ff850c33
HMH		 7687
7688 return 1;
7689}
7690
7691static struct ibm_struct volume_driver_data = {
7692 .name = "volume",
7693};
7694
7695#endif /* CONFIG_THINKPAD_ACPI_ALSA_SUPPORT */
7696
56b6aeb0
HMH		 7697/*************************************************************************
7698 * Fan subdriver
7699 */
7700
7701/*
7702 * FAN ACCESS MODES
7703 *
efa27145 7704 * TPACPI_FAN_RD_ACPI_GFAN:
56b6aeb0
HMH		 7705 * ACPI GFAN method: returns fan level
7706 *
efa27145 7707 * see TPACPI_FAN_WR_ACPI_SFAN
f51d1a39 7708 * EC 0x2f (HFSP) not available if GFAN exists
56b6aeb0 7709 *
efa27145 7710 * TPACPI_FAN_WR_ACPI_SFAN:
56b6aeb0
HMH		 7711 * ACPI SFAN method: sets fan level, 0 (stop) to 7 (max)
7712 *
f51d1a39
HMH		 7713 * EC 0x2f (HFSP) might be available *for reading*, but do not use
7714 * it for writing.
56b6aeb0 7715 *
efa27145 7716 * TPACPI_FAN_WR_TPEC:
f51d1a39
HMH		 7717 * ThinkPad EC register 0x2f (HFSP): fan control loop mode
7718 * Supported on almost all ThinkPads
56b6aeb0
HMH		 7719 *
7720 * Fan speed changes of any sort (including those caused by the
7721 * disengaged mode) are usually done slowly by the firmware as the
9ddc5b6f 7722 * maximum amount of fan duty cycle change per second seems to be
56b6aeb0
HMH		 7723 * limited.
7724 *
7725 * Reading is not available if GFAN exists.
7726 * Writing is not available if SFAN exists.
7727 *
7728 * Bits
7729 * 7 automatic mode engaged;
7730 * (default operation mode of the ThinkPad)
7731 * fan level is ignored in this mode.
f51d1a39 7732 * 6 full speed mode (takes precedence over bit 7);
56b6aeb0 7733 * not available on all thinkpads. May disable
f51d1a39
HMH		 7734 * the tachometer while the fan controller ramps up
7735 * the speed (which can take up to a few *minutes*).
7736 * Speeds up fan to 100% duty-cycle, which is far above
7737 * the standard RPM levels. It is not impossible that
7738 * it could cause hardware damage.
56b6aeb0
HMH		 7739 * 5-3 unused in some models. Extra bits for fan level
7740 * in others, but still useless as all values above
7741 * 7 map to the same speed as level 7 in these models.
7742 * 2-0 fan level (0..7 usually)
7743 * 0x00 = stop
7744 * 0x07 = max (set when temperatures critical)
7745 * Some ThinkPads may have other levels, see
efa27145 7746 * TPACPI_FAN_WR_ACPI_FANS (X31/X40/X41)
56b6aeb0
HMH		 7747 *
7748 * FIRMWARE BUG: on some models, EC 0x2f might not be initialized at
b595076a 7749 * boot. Apparently the EC does not initialize it, so unless ACPI DSDT
56b6aeb0
HMH		 7750 * does so, its initial value is meaningless (0x07).
7751 *
7752 * For firmware bugs, refer to:
7753 * http://thinkwiki.org/wiki/Embedded_Controller_Firmware#Firmware_Issues
7754 *
7755 * ----
7756 *
7757 * ThinkPad EC register 0x84 (LSB), 0x85 (MSB):
7758 * Main fan tachometer reading (in RPM)
7759 *
7760 * This register is present on all ThinkPads with a new-style EC, and
7761 * it is known not to be present on the A21m/e, and T22, as there is
7762 * something else in offset 0x84 according to the ACPI DSDT. Other
7763 * ThinkPads from this same time period (and earlier) probably lack the
7764 * tachometer as well.
7765 *
877d0310 7766 * Unfortunately a lot of ThinkPads with new-style ECs but whose firmware
56b6aeb0
HMH		 7767 * was never fixed by IBM to report the EC firmware version string
7768 * probably support the tachometer (like the early X models), so
7769 * detecting it is quite hard. We need more data to know for sure.
7770 *
7771 * FIRMWARE BUG: always read 0x84 first, otherwise incorrect readings
7772 * might result.
7773 *
f51d1a39
HMH		 7774 * FIRMWARE BUG: may go stale while the EC is switching to full speed
7775 * mode.
56b6aeb0
HMH		 7776 *
7777 * For firmware bugs, refer to:
7778 * http://thinkwiki.org/wiki/Embedded_Controller_Firmware#Firmware_Issues
7779 *
d7377247
HMH		 7780 * ----
7781 *
7782 * ThinkPad EC register 0x31 bit 0 (only on select models)
7783 *
7784 * When bit 0 of EC register 0x31 is zero, the tachometer registers
7785 * show the speed of the main fan. When bit 0 of EC register 0x31
7786 * is one, the tachometer registers show the speed of the auxiliary
7787 * fan.
7788 *
7789 * Fan control seems to affect both fans, regardless of the state
7790 * of this bit.
7791 *
7792 * So far, only the firmware for the X60/X61 non-tablet versions
7793 * seem to support this (firmware TP-7M).
7794 *
efa27145 7795 * TPACPI_FAN_WR_ACPI_FANS:
56b6aeb0
HMH		 7796 * ThinkPad X31, X40, X41. Not available in the X60.
7797 *
7798 * FANS ACPI handle: takes three arguments: low speed, medium speed,
7799 * high speed. ACPI DSDT seems to map these three speeds to levels
7800 * as follows: STOP LOW LOW MED MED HIGH HIGH HIGH HIGH
7801 * (this map is stored on FAN0..FAN8 as "0,1,1,2,2,3,3,3,3")
7802 *
7803 * The speeds are stored on handles
7804 * (FANA:FAN9), (FANC:FANB), (FANE:FAND).
7805 *
af901ca1 7806 * There are three default speed sets, accessible as handles:
56b6aeb0
HMH		 7807 * FS1L,FS1M,FS1H; FS2L,FS2M,FS2H; FS3L,FS3M,FS3H
7808 *
7809 * ACPI DSDT switches which set is in use depending on various
7810 * factors.
7811 *
efa27145 7812 * TPACPI_FAN_WR_TPEC is also available and should be used to
56b6aeb0
HMH		 7813 * command the fan. The X31/X40/X41 seems to have 8 fan levels,
7814 * but the ACPI tables just mention level 7.
7815 */
7816
f74a27d4
HMH		 7817enum { /* Fan control constants */
7818 fan_status_offset = 0x2f, /* EC register 0x2f */
7819 fan_rpm_offset = 0x84, /* EC register 0x84: LSB, 0x85 MSB (RPM)
7820 * 0x84 must be read before 0x85 */
d7377247
HMH		 7821 fan_select_offset = 0x31, /* EC register 0x31 (Firmware 7M)
7822 bit 0 selects which fan is active */
f74a27d4
HMH		 7823
7824 TP_EC_FAN_FULLSPEED = 0x40, /* EC fan mode: full speed */
7825 TP_EC_FAN_AUTO = 0x80, /* EC fan mode: auto fan control */
7826
7827 TPACPI_FAN_LAST_LEVEL = 0x100, /* Use cached last-seen fan level */
7828};
7829
7830enum fan_status_access_mode {
7831 TPACPI_FAN_NONE = 0, /* No fan status or control */
7832 TPACPI_FAN_RD_ACPI_GFAN, /* Use ACPI GFAN */
7833 TPACPI_FAN_RD_TPEC, /* Use ACPI EC regs 0x2f, 0x84-0x85 */
7834};
7835
7836enum fan_control_access_mode {
7837 TPACPI_FAN_WR_NONE = 0, /* No fan control */
7838 TPACPI_FAN_WR_ACPI_SFAN, /* Use ACPI SFAN */
7839 TPACPI_FAN_WR_TPEC, /* Use ACPI EC reg 0x2f */
7840 TPACPI_FAN_WR_ACPI_FANS, /* Use ACPI FANS and EC reg 0x2f */
7841};
7842
7843enum fan_control_commands {
7844 TPACPI_FAN_CMD_SPEED = 0x0001, /* speed command */
7845 TPACPI_FAN_CMD_LEVEL = 0x0002, /* level command */
7846 TPACPI_FAN_CMD_ENABLE = 0x0004, /* enable/disable cmd,
7847 * and also watchdog cmd */
7848};
7849
90ab5ee9 7850static bool fan_control_allowed;
f74a27d4 7851
69ba91cb
HMH		 7852static enum fan_status_access_mode fan_status_access_mode;
7853static enum fan_control_access_mode fan_control_access_mode;
7854static enum fan_control_commands fan_control_commands;
78f81cc4 7855
778b4d74 7856static u8 fan_control_initial_status;
fe98a52c 7857static u8 fan_control_desired_level;
0081b162 7858static u8 fan_control_resume_level;
f74a27d4
HMH		 7859static int fan_watchdog_maxinterval;
7860
7861static struct mutex fan_mutex;
778b4d74 7862
25c68a33 7863static void fan_watchdog_fire(struct work_struct *ignored);
25c68a33 7864static DECLARE_DELAYED_WORK(fan_watchdog_task, fan_watchdog_fire);
16663a87 7865
e0c7dfe7
HMH		 7866TPACPI_HANDLE(fans, ec, "FANS"); /* X31, X40, X41 */
7867TPACPI_HANDLE(gfan, ec, "GFAN", /* 570 */
56b6aeb0
HMH		 7868 "\\FSPD", /* 600e/x, 770e, 770x */
7869 ); /* all others */
e0c7dfe7 7870TPACPI_HANDLE(sfan, ec, "SFAN", /* 570 */
56b6aeb0
HMH		 7871 "JFNS", /* 770x-JL */
7872 ); /* all others */
7873
1c2ece75
HMH		 7874/*
7875 * Unitialized HFSP quirk: ACPI DSDT and EC fail to initialize the
7876 * HFSP register at boot, so it contains 0x07 but the Thinkpad could
7877 * be in auto mode (0x80).
7878 *
7879 * This is corrected by any write to HFSP either by the driver, or
7880 * by the firmware.
7881 *
7882 * We assume 0x07 really means auto mode while this quirk is active,
7883 * as this is far more likely than the ThinkPad being in level 7,
7884 * which is only used by the firmware during thermal emergencies.
7d95a3d5
HMH		 7885 *
7886 * Enable for TP-1Y (T43), TP-78 (R51e), TP-76 (R52),
7887 * TP-70 (T43, R52), which are known to be buggy.
1c2ece75
HMH		 7888 */
7889
7d95a3d5 7890static void fan_quirk1_setup(void)
1c2ece75 7891{
1c2ece75 7892 if (fan_control_initial_status == 0x07) {
0978e012
JP		 7893 pr_notice("fan_init: initial fan status is unknown, "
7894 "assuming it is in auto mode\n");
7d95a3d5 7895 tp_features.fan_ctrl_status_undef = 1;
1c2ece75
HMH		 7896 }
7897}
7898
7899static void fan_quirk1_handle(u8 *fan_status)
7900{
7901 if (unlikely(tp_features.fan_ctrl_status_undef)) {
7902 if (*fan_status != fan_control_initial_status) {
7903 /* something changed the HFSP regisnter since
7904 * driver init time, so it is not undefined
7905 * anymore */
7906 tp_features.fan_ctrl_status_undef = 0;
7907 } else {
7908 /* Return most likely status. In fact, it
7909 * might be the only possible status */
7910 *fan_status = TP_EC_FAN_AUTO;
7911 }
7912 }
7913}
7914
d7377247
HMH		 7915/* Select main fan on X60/X61, NOOP on others */
7916static bool fan_select_fan1(void)
7917{
7918 if (tp_features.second_fan) {
7919 u8 val;
7920
7921 if (ec_read(fan_select_offset, &val) < 0)
7922 return false;
7923 val &= 0xFEU;
7924 if (ec_write(fan_select_offset, val) < 0)
7925 return false;
7926 }
7927 return true;
7928}
7929
7930/* Select secondary fan on X60/X61 */
7931static bool fan_select_fan2(void)
7932{
7933 u8 val;
7934
7935 if (!tp_features.second_fan)
7936 return false;
7937
7938 if (ec_read(fan_select_offset, &val) < 0)
7939 return false;
7940 val |= 0x01U;
7941 if (ec_write(fan_select_offset, val) < 0)
7942 return false;
7943
7944 return true;
7945}
7946
fe98a52c 7947/*
b21a15f6 7948 * Call with fan_mutex held
fe98a52c 7949 */
b21a15f6 7950static void fan_update_desired_level(u8 status)
fe98a52c 7951{
b21a15f6
HMH		 7952 if ((status &
7953 (TP_EC_FAN_AUTO | TP_EC_FAN_FULLSPEED)) == 0) {
7954 if (status > 7)
7955 fan_control_desired_level = 7;
7956 else
7957 fan_control_desired_level = status;
7958 }
7959}
fe98a52c 7960
b21a15f6
HMH		 7961static int fan_get_status(u8 *status)
7962{
7963 u8 s;
fe98a52c 7964
b21a15f6
HMH		 7965 /* TODO:
7966 * Add TPACPI_FAN_RD_ACPI_FANS ? */
fe98a52c 7967
b21a15f6 7968 switch (fan_status_access_mode) {
eceeb437 7969 case TPACPI_FAN_RD_ACPI_GFAN: {
b21a15f6 7970 /* 570, 600e/x, 770e, 770x */
eceeb437 7971 int res;
fe98a52c 7972
eceeb437 7973 if (unlikely(!acpi_evalf(gfan_handle, &res, NULL, "d")))
b21a15f6 7974 return -EIO;
fe98a52c 7975
b21a15f6 7976 if (likely(status))
eceeb437 7977 *status = res & 0x07;
fe98a52c 7978
b21a15f6 7979 break;
eceeb437 7980 }
b21a15f6
HMH		 7981 case TPACPI_FAN_RD_TPEC:
7982 /* all except 570, 600e/x, 770e, 770x */
7983 if (unlikely(!acpi_ec_read(fan_status_offset, &s)))
7984 return -EIO;
7985
1c2ece75 7986 if (likely(status)) {
b21a15f6 7987 *status = s;
1c2ece75
HMH		 7988 fan_quirk1_handle(status);
7989 }
fe98a52c 7990
fe98a52c 7991 break;
b21a15f6 7992
fe98a52c 7993 default:
b21a15f6 7994 return -ENXIO;
fe98a52c
HMH		 7995 }
7996
b21a15f6
HMH		 7997 return 0;
7998}
fe98a52c 7999
b21a15f6
HMH		 8000static int fan_get_status_safe(u8 *status)
8001{
8002 int rc;
8003 u8 s;
fe98a52c 8004
7646ea88 8005 if (mutex_lock_killable(&fan_mutex))
b21a15f6
HMH		 8006 return -ERESTARTSYS;
8007 rc = fan_get_status(&s);
8008 if (!rc)
8009 fan_update_desired_level(s);
8010 mutex_unlock(&fan_mutex);
fe98a52c 8011
a7718360
DC		 8012 if (rc)
8013 return rc;
b21a15f6
HMH		 8014 if (status)
8015 *status = s;
fe98a52c 8016
a7718360 8017 return 0;
b21a15f6
HMH		 8018}
8019
8020static int fan_get_speed(unsigned int *speed)
fe98a52c 8021{
b21a15f6 8022 u8 hi, lo;
fe98a52c 8023
b21a15f6
HMH		 8024 switch (fan_status_access_mode) {
8025 case TPACPI_FAN_RD_TPEC:
8026 /* all except 570, 600e/x, 770e, 770x */
d7377247
HMH		 8027 if (unlikely(!fan_select_fan1()))
8028 return -EIO;
b21a15f6
HMH		 8029 if (unlikely(!acpi_ec_read(fan_rpm_offset, &lo) ||
8030 !acpi_ec_read(fan_rpm_offset + 1, &hi)))
8031 return -EIO;
fe98a52c 8032
b21a15f6
HMH		 8033 if (likely(speed))
8034 *speed = (hi << 8) | lo;
fe98a52c 8035
b21a15f6 8036 break;
fe98a52c 8037
b21a15f6
HMH		 8038 default:
8039 return -ENXIO;
8040 }
fe98a52c 8041
b21a15f6 8042 return 0;
fe98a52c
HMH		 8043}
8044
d7377247
HMH		 8045static int fan2_get_speed(unsigned int *speed)
8046{
8047 u8 hi, lo;
8048 bool rc;
8049
8050 switch (fan_status_access_mode) {
8051 case TPACPI_FAN_RD_TPEC:
8052 /* all except 570, 600e/x, 770e, 770x */
8053 if (unlikely(!fan_select_fan2()))
8054 return -EIO;
8055 rc = !acpi_ec_read(fan_rpm_offset, &lo) ||
8056 !acpi_ec_read(fan_rpm_offset + 1, &hi);
8057 fan_select_fan1(); /* play it safe */
8058 if (rc)
8059 return -EIO;
8060
8061 if (likely(speed))
8062 *speed = (hi << 8) | lo;
8063
8064 break;
8065
8066 default:
8067 return -ENXIO;
8068 }
8069
8070 return 0;
8071}
8072
b21a15f6 8073static int fan_set_level(int level)
fe98a52c 8074{
b21a15f6
HMH		 8075 if (!fan_control_allowed)
8076 return -EPERM;
fe98a52c 8077
b21a15f6
HMH		 8078 switch (fan_control_access_mode) {
8079 case TPACPI_FAN_WR_ACPI_SFAN:
8080 if (level >= 0 && level <= 7) {
8081 if (!acpi_evalf(sfan_handle, NULL, NULL, "vd", level))
8082 return -EIO;
8083 } else
8084 return -EINVAL;
8085 break;
fe98a52c 8086
b21a15f6
HMH		 8087 case TPACPI_FAN_WR_ACPI_FANS:
8088 case TPACPI_FAN_WR_TPEC:
0081b162
HMH		 8089 if (!(level & TP_EC_FAN_AUTO) &&
8090 !(level & TP_EC_FAN_FULLSPEED) &&
b21a15f6
HMH		 8091 ((level < 0) || (level > 7)))
8092 return -EINVAL;
fe98a52c 8093
b21a15f6
HMH		 8094 /* safety net should the EC not support AUTO
8095 * or FULLSPEED mode bits and just ignore them */
8096 if (level & TP_EC_FAN_FULLSPEED)
8097 level |= 7; /* safety min speed 7 */
547266e4 8098 else if (level & TP_EC_FAN_AUTO)
b21a15f6 8099 level |= 4; /* safety min speed 4 */
fe98a52c 8100
b21a15f6
HMH		 8101 if (!acpi_ec_write(fan_status_offset, level))
8102 return -EIO;
8103 else
8104 tp_features.fan_ctrl_status_undef = 0;
8105 break;
fe98a52c 8106
b21a15f6
HMH		 8107 default:
8108 return -ENXIO;
8109 }
74a60c0f
HMH		 8110
8111 vdbg_printk(TPACPI_DBG_FAN,
8112 "fan control: set fan control register to 0x%02x\n", level);
b21a15f6 8113 return 0;
fe98a52c
HMH		 8114}
8115
b21a15f6 8116static int fan_set_level_safe(int level)
fe98a52c 8117{
b21a15f6 8118 int rc;
fe98a52c 8119
b21a15f6
HMH		 8120 if (!fan_control_allowed)
8121 return -EPERM;
fe98a52c 8122
7646ea88 8123 if (mutex_lock_killable(&fan_mutex))
b21a15f6 8124 return -ERESTARTSYS;
fe98a52c 8125
b21a15f6
HMH		 8126 if (level == TPACPI_FAN_LAST_LEVEL)
8127 level = fan_control_desired_level;
fe98a52c 8128
b21a15f6
HMH		 8129 rc = fan_set_level(level);
8130 if (!rc)
8131 fan_update_desired_level(level);
8132
8133 mutex_unlock(&fan_mutex);
8134 return rc;
fe98a52c
HMH		 8135}
8136
b21a15f6 8137static int fan_set_enable(void)
fe98a52c 8138{
b21a15f6
HMH		 8139 u8 s;
8140 int rc;
fe98a52c 8141
ecf2a80a
HMH		 8142 if (!fan_control_allowed)
8143 return -EPERM;
8144
7646ea88 8145 if (mutex_lock_killable(&fan_mutex))
b21a15f6 8146 return -ERESTARTSYS;
fe98a52c 8147
b21a15f6
HMH		 8148 switch (fan_control_access_mode) {
8149 case TPACPI_FAN_WR_ACPI_FANS:
8150 case TPACPI_FAN_WR_TPEC:
8151 rc = fan_get_status(&s);
8152 if (rc < 0)
8153 break;
fe98a52c 8154
b21a15f6
HMH		 8155 /* Don't go out of emergency fan mode */
8156 if (s != 7) {
8157 s &= 0x07;
8158 s |= TP_EC_FAN_AUTO | 4; /* min fan speed 4 */
8159 }
fe98a52c 8160
b21a15f6
HMH		 8161 if (!acpi_ec_write(fan_status_offset, s))
8162 rc = -EIO;
8163 else {
8164 tp_features.fan_ctrl_status_undef = 0;
8165 rc = 0;
8166 }
8167 break;
fe98a52c 8168
b21a15f6
HMH		 8169 case TPACPI_FAN_WR_ACPI_SFAN:
8170 rc = fan_get_status(&s);
8171 if (rc < 0)
8172 break;
fe98a52c 8173
b21a15f6 8174 s &= 0x07;
fe98a52c 8175
b21a15f6
HMH		 8176 /* Set fan to at least level 4 */
8177 s |= 4;
fe08bc4b 8178
b21a15f6 8179 if (!acpi_evalf(sfan_handle, NULL, NULL, "vd", s))
35ff8b9f 8180 rc = -EIO;
b21a15f6
HMH		 8181 else
8182 rc = 0;
8183 break;
78f81cc4 8184
b21a15f6
HMH		 8185 default:
8186 rc = -ENXIO;
8187 }
5fba344c 8188
b21a15f6 8189 mutex_unlock(&fan_mutex);
74a60c0f
HMH		 8190
8191 if (!rc)
8192 vdbg_printk(TPACPI_DBG_FAN,
8193 "fan control: set fan control register to 0x%02x\n",
8194 s);
b21a15f6 8195 return rc;
69ba91cb 8196}
78f81cc4 8197
b21a15f6 8198static int fan_set_disable(void)
78f81cc4 8199{
b21a15f6 8200 int rc;
c52f0aa5 8201
b21a15f6
HMH		 8202 if (!fan_control_allowed)
8203 return -EPERM;
78f81cc4 8204
7646ea88 8205 if (mutex_lock_killable(&fan_mutex))
b21a15f6 8206 return -ERESTARTSYS;
3ef8a609 8207
b21a15f6
HMH		 8208 rc = 0;
8209 switch (fan_control_access_mode) {
8210 case TPACPI_FAN_WR_ACPI_FANS:
8211 case TPACPI_FAN_WR_TPEC:
8212 if (!acpi_ec_write(fan_status_offset, 0x00))
8213 rc = -EIO;
8214 else {
8215 fan_control_desired_level = 0;
8216 tp_features.fan_ctrl_status_undef = 0;
8217 }
3ef8a609
HMH		 8218 break;
8219
b21a15f6
HMH		 8220 case TPACPI_FAN_WR_ACPI_SFAN:
8221 if (!acpi_evalf(sfan_handle, NULL, NULL, "vd", 0x00))
8222 rc = -EIO;
8223 else
8224 fan_control_desired_level = 0;
c52f0aa5
HMH		 8225 break;
8226
8227 default:
b21a15f6 8228 rc = -ENXIO;
78f81cc4
BD		 8229 }
8230
74a60c0f
HMH		 8231 if (!rc)
8232 vdbg_printk(TPACPI_DBG_FAN,
8233 "fan control: set fan control register to 0\n");
fe98a52c 8234
fe98a52c 8235 mutex_unlock(&fan_mutex);
fe98a52c
HMH		 8236 return rc;
8237}
8238
b21a15f6 8239static int fan_set_speed(int speed)
c52f0aa5 8240{
b21a15f6 8241 int rc;
c52f0aa5 8242
b21a15f6
HMH		 8243 if (!fan_control_allowed)
8244 return -EPERM;
3ef8a609 8245
7646ea88 8246 if (mutex_lock_killable(&fan_mutex))
b21a15f6 8247 return -ERESTARTSYS;
c52f0aa5 8248
b21a15f6
HMH		 8249 rc = 0;
8250 switch (fan_control_access_mode) {
8251 case TPACPI_FAN_WR_ACPI_FANS:
8252 if (speed >= 0 && speed <= 65535) {
8253 if (!acpi_evalf(fans_handle, NULL, NULL, "vddd",
8254 speed, speed, speed))
8255 rc = -EIO;
8256 } else
8257 rc = -EINVAL;
c52f0aa5
HMH		 8258 break;
8259
8260 default:
b21a15f6 8261 rc = -ENXIO;
c52f0aa5
HMH		 8262 }
8263
b21a15f6
HMH		 8264 mutex_unlock(&fan_mutex);
8265 return rc;
16663a87
HMH		 8266}
8267
8268static void fan_watchdog_reset(void)
8269{
4985cd0a
HMH		 8270 if (fan_control_access_mode == TPACPI_FAN_WR_NONE)
8271 return;
8272
8fef502e 8273 if (fan_watchdog_maxinterval > 0 &&
41f63c53
TH		 8274 tpacpi_lifecycle != TPACPI_LIFE_EXITING)
8275 mod_delayed_work(tpacpi_wq, &fan_watchdog_task,
8276 msecs_to_jiffies(fan_watchdog_maxinterval * 1000));
8277 else
8278 cancel_delayed_work(&fan_watchdog_task);
16663a87
HMH		 8279}
8280
b21a15f6 8281static void fan_watchdog_fire(struct work_struct *ignored)
78f81cc4 8282{
b21a15f6 8283 int rc;
18ad7996 8284
b21a15f6
HMH		 8285 if (tpacpi_lifecycle != TPACPI_LIFE_RUNNING)
8286 return;
a12095c2 8287
0978e012 8288 pr_notice("fan watchdog: enabling fan\n");
b21a15f6
HMH		 8289 rc = fan_set_enable();
8290 if (rc < 0) {
0978e012
JP		 8291 pr_err("fan watchdog: error %d while enabling fan, "
8292 "will try again later...\n", -rc);
b21a15f6
HMH		 8293 /* reschedule for later */
8294 fan_watchdog_reset();
8295 }
8296}
eaa7571b 8297
b21a15f6
HMH		 8298/*
8299 * SYSFS fan layout: hwmon compatible (device)
8300 *
8301 * pwm*_enable:
8302 * 0: "disengaged" mode
8303 * 1: manual mode
8304 * 2: native EC "auto" mode (recommended, hardware default)
8305 *
8306 * pwm*: set speed in manual mode, ignored otherwise.
8307 * 0 is level 0; 255 is level 7. Intermediate points done with linear
8308 * interpolation.
8309 *
8310 * fan*_input: tachometer reading, RPM
8311 *
8312 *
8313 * SYSFS fan layout: extensions
8314 *
8315 * fan_watchdog (driver):
8316 * fan watchdog interval in seconds, 0 disables (default), max 120
8317 */
8318
8319/* sysfs fan pwm1_enable ----------------------------------------------- */
8320static ssize_t fan_pwm1_enable_show(struct device *dev,
8321 struct device_attribute *attr,
8322 char *buf)
8323{
8324 int res, mode;
8325 u8 status;
8326
8327 res = fan_get_status_safe(&status);
8328 if (res)
8329 return res;
8330
b21a15f6
HMH		 8331 if (status & TP_EC_FAN_FULLSPEED) {
8332 mode = 0;
8333 } else if (status & TP_EC_FAN_AUTO) {
8334 mode = 2;
8335 } else
8336 mode = 1;
8337
8338 return snprintf(buf, PAGE_SIZE, "%d\n", mode);
8339}
a12095c2 8340
b21a15f6
HMH		 8341static ssize_t fan_pwm1_enable_store(struct device *dev,
8342 struct device_attribute *attr,
8343 const char *buf, size_t count)
8344{
8345 unsigned long t;
8346 int res, level;
8347
8348 if (parse_strtoul(buf, 2, &t))
8349 return -EINVAL;
8350
74a60c0f
HMH		 8351 tpacpi_disclose_usertask("hwmon pwm1_enable",
8352 "set fan mode to %lu\n", t);
8353
b21a15f6
HMH		 8354 switch (t) {
8355 case 0:
8356 level = TP_EC_FAN_FULLSPEED;
8357 break;
8358 case 1:
8359 level = TPACPI_FAN_LAST_LEVEL;
8360 break;
8361 case 2:
8362 level = TP_EC_FAN_AUTO;
8363 break;
8364 case 3:
8365 /* reserved for software-controlled auto mode */
8366 return -ENOSYS;
18ad7996 8367 default:
b21a15f6 8368 return -EINVAL;
18ad7996 8369 }
b21a15f6
HMH		 8370
8371 res = fan_set_level_safe(level);
8372 if (res == -ENXIO)
8373 return -EINVAL;
8374 else if (res < 0)
8375 return res;
8376
8377 fan_watchdog_reset();
8378
8379 return count;
18ad7996
HMH		 8380}
8381
5fb73bc2
BM		 8382static DEVICE_ATTR(pwm1_enable, S_IWUSR | S_IRUGO,
8383 fan_pwm1_enable_show, fan_pwm1_enable_store);
b21a15f6
HMH		 8384
8385/* sysfs fan pwm1 ------------------------------------------------------ */
8386static ssize_t fan_pwm1_show(struct device *dev,
8387 struct device_attribute *attr,
8388 char *buf)
fe98a52c 8389{
b21a15f6
HMH		 8390 int res;
8391 u8 status;
fe98a52c 8392
b21a15f6
HMH		 8393 res = fan_get_status_safe(&status);
8394 if (res)
8395 return res;
ecf2a80a 8396
b21a15f6
HMH		 8397 if ((status &
8398 (TP_EC_FAN_AUTO | TP_EC_FAN_FULLSPEED)) != 0)
8399 status = fan_control_desired_level;
fe98a52c 8400
b21a15f6
HMH		 8401 if (status > 7)
8402 status = 7;
fe98a52c 8403
b21a15f6 8404 return snprintf(buf, PAGE_SIZE, "%u\n", (status * 255) / 7);
fe98a52c
HMH		 8405}
8406
b21a15f6
HMH		 8407static ssize_t fan_pwm1_store(struct device *dev,
8408 struct device_attribute *attr,
8409 const char *buf, size_t count)
18ad7996 8410{
b21a15f6 8411 unsigned long s;
1c6a334e 8412 int rc;
b21a15f6 8413 u8 status, newlevel;
1c6a334e 8414
b21a15f6
HMH		 8415 if (parse_strtoul(buf, 255, &s))
8416 return -EINVAL;
8417
74a60c0f
HMH		 8418 tpacpi_disclose_usertask("hwmon pwm1",
8419 "set fan speed to %lu\n", s);
8420
b21a15f6
HMH		 8421 /* scale down from 0-255 to 0-7 */
8422 newlevel = (s >> 5) & 0x07;
ecf2a80a 8423
7646ea88 8424 if (mutex_lock_killable(&fan_mutex))
fc589a3c 8425 return -ERESTARTSYS;
40ca9fdf 8426
b21a15f6
HMH		 8427 rc = fan_get_status(&status);
8428 if (!rc && (status &
8429 (TP_EC_FAN_AUTO | TP_EC_FAN_FULLSPEED)) == 0) {
8430 rc = fan_set_level(newlevel);
8431 if (rc == -ENXIO)
8432 rc = -EINVAL;
8433 else if (!rc) {
8434 fan_update_desired_level(newlevel);
8435 fan_watchdog_reset();
eaa7571b 8436 }
b21a15f6 8437 }
1c6a334e 8438
b21a15f6 8439 mutex_unlock(&fan_mutex);
72a979f0 8440 return (rc) ? rc : count;
b21a15f6 8441}
1c6a334e 8442
5fb73bc2 8443static DEVICE_ATTR(pwm1, S_IWUSR | S_IRUGO, fan_pwm1_show, fan_pwm1_store);
1c6a334e 8444
b21a15f6
HMH		 8445/* sysfs fan fan1_input ------------------------------------------------ */
8446static ssize_t fan_fan1_input_show(struct device *dev,
8447 struct device_attribute *attr,
8448 char *buf)
8449{
8450 int res;
8451 unsigned int speed;
1c6a334e 8452
b21a15f6
HMH		 8453 res = fan_get_speed(&speed);
8454 if (res < 0)
8455 return res;
1c6a334e 8456
b21a15f6
HMH		 8457 return snprintf(buf, PAGE_SIZE, "%u\n", speed);
8458}
18ad7996 8459
5fb73bc2 8460static DEVICE_ATTR(fan1_input, S_IRUGO, fan_fan1_input_show, NULL);
40ca9fdf 8461
d7377247
HMH		 8462/* sysfs fan fan2_input ------------------------------------------------ */
8463static ssize_t fan_fan2_input_show(struct device *dev,
8464 struct device_attribute *attr,
8465 char *buf)
8466{
8467 int res;
8468 unsigned int speed;
8469
8470 res = fan2_get_speed(&speed);
8471 if (res < 0)
8472 return res;
8473
8474 return snprintf(buf, PAGE_SIZE, "%u\n", speed);
8475}
8476
5fb73bc2 8477static DEVICE_ATTR(fan2_input, S_IRUGO, fan_fan2_input_show, NULL);
d7377247 8478
b21a15f6
HMH		 8479/* sysfs fan fan_watchdog (hwmon driver) ------------------------------- */
8480static ssize_t fan_fan_watchdog_show(struct device_driver *drv,
8481 char *buf)
8482{
8483 return snprintf(buf, PAGE_SIZE, "%u\n", fan_watchdog_maxinterval);
18ad7996
HMH		 8484}
8485
b21a15f6
HMH		 8486static ssize_t fan_fan_watchdog_store(struct device_driver *drv,
8487 const char *buf, size_t count)
18ad7996 8488{
b21a15f6
HMH		 8489 unsigned long t;
8490
8491 if (parse_strtoul(buf, 120, &t))
8492 return -EINVAL;
40ca9fdf 8493
ecf2a80a
HMH		 8494 if (!fan_control_allowed)
8495 return -EPERM;
8496
b21a15f6
HMH		 8497 fan_watchdog_maxinterval = t;
8498 fan_watchdog_reset();
40ca9fdf 8499
74a60c0f
HMH		 8500 tpacpi_disclose_usertask("fan_watchdog", "set to %lu\n", t);
8501
b21a15f6
HMH		 8502 return count;
8503}
8504
8505static DRIVER_ATTR(fan_watchdog, S_IWUSR | S_IRUGO,
8506 fan_fan_watchdog_show, fan_fan_watchdog_store);
8507
8508/* --------------------------------------------------------------------- */
8509static struct attribute *fan_attributes[] = {
5fb73bc2
BM		 8510 &dev_attr_pwm1_enable.attr, &dev_attr_pwm1.attr,
8511 &dev_attr_fan1_input.attr,
d7377247 8512 NULL, /* for fan2_input */
b21a15f6
HMH		 8513 NULL
8514};
8515
8516static const struct attribute_group fan_attr_group = {
8517 .attrs = fan_attributes,
8518};
8519
d7377247
HMH		 8520#define TPACPI_FAN_Q1 0x0001 /* Unitialized HFSP */
8521#define TPACPI_FAN_2FAN 0x0002 /* EC 0x31 bit 0 selects fan2 */
7d95a3d5
HMH		 8522
8523#define TPACPI_FAN_QI(__id1, __id2, __quirks) \
8524 { .vendor = PCI_VENDOR_ID_IBM, \
8525 .bios = TPACPI_MATCH_ANY, \
8526 .ec = TPID(__id1, __id2), \
8527 .quirks = __quirks }
8528
d7377247
HMH		 8529#define TPACPI_FAN_QL(__id1, __id2, __quirks) \
8530 { .vendor = PCI_VENDOR_ID_LENOVO, \
8531 .bios = TPACPI_MATCH_ANY, \
8532 .ec = TPID(__id1, __id2), \
8533 .quirks = __quirks }
8534
7d95a3d5
HMH		 8535static const struct tpacpi_quirk fan_quirk_table[] __initconst = {
8536 TPACPI_FAN_QI('1', 'Y', TPACPI_FAN_Q1),
8537 TPACPI_FAN_QI('7', '8', TPACPI_FAN_Q1),
8538 TPACPI_FAN_QI('7', '6', TPACPI_FAN_Q1),
8539 TPACPI_FAN_QI('7', '0', TPACPI_FAN_Q1),
d7377247 8540 TPACPI_FAN_QL('7', 'M', TPACPI_FAN_2FAN),
7d95a3d5
HMH		 8541};
8542
d7377247 8543#undef TPACPI_FAN_QL
7d95a3d5
HMH		 8544#undef TPACPI_FAN_QI
8545
b21a15f6
HMH		 8546static int __init fan_init(struct ibm_init_struct *iibm)
8547{
8548 int rc;
7d95a3d5 8549 unsigned long quirks;
b21a15f6 8550
74a60c0f
HMH		 8551 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_FAN,
8552 "initializing fan subdriver\n");
b21a15f6
HMH		 8553
8554 mutex_init(&fan_mutex);
8555 fan_status_access_mode = TPACPI_FAN_NONE;
8556 fan_control_access_mode = TPACPI_FAN_WR_NONE;
8557 fan_control_commands = 0;
8558 fan_watchdog_maxinterval = 0;
8559 tp_features.fan_ctrl_status_undef = 0;
d7377247 8560 tp_features.second_fan = 0;
b21a15f6
HMH		 8561 fan_control_desired_level = 7;
8562
e28393c0
HMH		 8563 if (tpacpi_is_ibm()) {
8564 TPACPI_ACPIHANDLE_INIT(fans);
8565 TPACPI_ACPIHANDLE_INIT(gfan);
8566 TPACPI_ACPIHANDLE_INIT(sfan);
8567 }
b21a15f6 8568
7d95a3d5
HMH		 8569 quirks = tpacpi_check_quirks(fan_quirk_table,
8570 ARRAY_SIZE(fan_quirk_table));
8571
b21a15f6
HMH		 8572 if (gfan_handle) {
8573 /* 570, 600e/x, 770e, 770x */
8574 fan_status_access_mode = TPACPI_FAN_RD_ACPI_GFAN;
8575 } else {
8576 /* all other ThinkPads: note that even old-style
8577 * ThinkPad ECs supports the fan control register */
8578 if (likely(acpi_ec_read(fan_status_offset,
8579 &fan_control_initial_status))) {
8580 fan_status_access_mode = TPACPI_FAN_RD_TPEC;
7d95a3d5
HMH		 8581 if (quirks & TPACPI_FAN_Q1)
8582 fan_quirk1_setup();
d7377247
HMH		 8583 if (quirks & TPACPI_FAN_2FAN) {
8584 tp_features.second_fan = 1;
8585 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_FAN,
8586 "secondary fan support enabled\n");
8587 }
b21a15f6 8588 } else {
0978e012 8589 pr_err("ThinkPad ACPI EC access misbehaving, "
b21a15f6
HMH		 8590 "fan status and control unavailable\n");
8591 return 1;
8592 }
8593 }
8594
8595 if (sfan_handle) {
8596 /* 570, 770x-JL */
8597 fan_control_access_mode = TPACPI_FAN_WR_ACPI_SFAN;
8598 fan_control_commands |=
8599 TPACPI_FAN_CMD_LEVEL | TPACPI_FAN_CMD_ENABLE;
8600 } else {
8601 if (!gfan_handle) {
8602 /* gfan without sfan means no fan control */
8603 /* all other models implement TP EC 0x2f control */
8604
8605 if (fans_handle) {
8606 /* X31, X40, X41 */
8607 fan_control_access_mode =
8608 TPACPI_FAN_WR_ACPI_FANS;
8609 fan_control_commands |=
8610 TPACPI_FAN_CMD_SPEED |
8611 TPACPI_FAN_CMD_LEVEL |
8612 TPACPI_FAN_CMD_ENABLE;
8613 } else {
8614 fan_control_access_mode = TPACPI_FAN_WR_TPEC;
8615 fan_control_commands |=
8616 TPACPI_FAN_CMD_LEVEL |
8617 TPACPI_FAN_CMD_ENABLE;
8618 }
fe98a52c 8619 }
b21a15f6 8620 }
18ad7996 8621
74a60c0f
HMH		 8622 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_FAN,
8623 "fan is %s, modes %d, %d\n",
b21a15f6
HMH		 8624 str_supported(fan_status_access_mode != TPACPI_FAN_NONE ||
8625 fan_control_access_mode != TPACPI_FAN_WR_NONE),
8626 fan_status_access_mode, fan_control_access_mode);
1c6a334e 8627
b21a15f6
HMH		 8628 /* fan control master switch */
8629 if (!fan_control_allowed) {
8630 fan_control_access_mode = TPACPI_FAN_WR_NONE;
8631 fan_control_commands = 0;
74a60c0f 8632 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_FAN,
b21a15f6 8633 "fan control features disabled by parameter\n");
18ad7996 8634 }
40ca9fdf 8635
b21a15f6
HMH		 8636 /* update fan_control_desired_level */
8637 if (fan_status_access_mode != TPACPI_FAN_NONE)
8638 fan_get_status_safe(NULL);
fe98a52c 8639
b21a15f6
HMH		 8640 if (fan_status_access_mode != TPACPI_FAN_NONE ||
8641 fan_control_access_mode != TPACPI_FAN_WR_NONE) {
d7377247
HMH		 8642 if (tp_features.second_fan) {
8643 /* attach second fan tachometer */
8644 fan_attributes[ARRAY_SIZE(fan_attributes)-2] =
5fb73bc2 8645 &dev_attr_fan2_input.attr;
d7377247 8646 }
b21a15f6
HMH		 8647 rc = sysfs_create_group(&tpacpi_sensors_pdev->dev.kobj,
8648 &fan_attr_group);
b21a15f6
HMH		 8649 if (rc < 0)
8650 return rc;
9c0a76e1
HMH		 8651
8652 rc = driver_create_file(&tpacpi_hwmon_pdriver.driver,
8653 &driver_attr_fan_watchdog);
8654 if (rc < 0) {
8655 sysfs_remove_group(&tpacpi_sensors_pdev->dev.kobj,
8656 &fan_attr_group);
8657 return rc;
8658 }
b21a15f6
HMH		 8659 return 0;
8660 } else
8661 return 1;
56b6aeb0
HMH		 8662}
8663
b21a15f6 8664static void fan_exit(void)
56b6aeb0 8665{
74a60c0f 8666 vdbg_printk(TPACPI_DBG_EXIT | TPACPI_DBG_FAN,
35ff8b9f 8667 "cancelling any pending fan watchdog tasks\n");
56b6aeb0 8668
b21a15f6
HMH		 8669 /* FIXME: can we really do this unconditionally? */
8670 sysfs_remove_group(&tpacpi_sensors_pdev->dev.kobj, &fan_attr_group);
35ff8b9f
HMH		 8671 driver_remove_file(&tpacpi_hwmon_pdriver.driver,
8672 &driver_attr_fan_watchdog);
40ca9fdf 8673
b21a15f6 8674 cancel_delayed_work(&fan_watchdog_task);
e0e3c061 8675 flush_workqueue(tpacpi_wq);
56b6aeb0
HMH		 8676}
8677
fd3c3a42 8678static void fan_suspend(void)
75700e53 8679{
0081b162
HMH		 8680 int rc;
8681
75700e53
HMH		 8682 if (!fan_control_allowed)
8683 return;
8684
8685 /* Store fan status in cache */
0081b162
HMH		 8686 fan_control_resume_level = 0;
8687 rc = fan_get_status_safe(&fan_control_resume_level);
8688 if (rc < 0)
0978e012
JP		 8689 pr_notice("failed to read fan level for later "
8690 "restore during resume: %d\n", rc);
0081b162
HMH		 8691
8692 /* if it is undefined, don't attempt to restore it.
8693 * KEEP THIS LAST */
75700e53 8694 if (tp_features.fan_ctrl_status_undef)
0081b162 8695 fan_control_resume_level = 0;
75700e53
HMH		 8696}
8697
8698static void fan_resume(void)
8699{
75700e53
HMH		 8700 u8 current_level = 7;
8701 bool do_set = false;
0081b162 8702 int rc;
75700e53
HMH		 8703
8704 /* DSDT *always* updates status on resume */
8705 tp_features.fan_ctrl_status_undef = 0;
8706
75700e53 8707 if (!fan_control_allowed ||
0081b162 8708 !fan_control_resume_level ||
75700e53
HMH		 8709 (fan_get_status_safe(&current_level) < 0))
8710 return;
8711
8712 switch (fan_control_access_mode) {
8713 case TPACPI_FAN_WR_ACPI_SFAN:
0081b162
HMH		 8714 /* never decrease fan level */
8715 do_set = (fan_control_resume_level > current_level);
75700e53
HMH		 8716 break;
8717 case TPACPI_FAN_WR_ACPI_FANS:
8718 case TPACPI_FAN_WR_TPEC:
0081b162
HMH		 8719 /* never decrease fan level, scale is:
8720 * TP_EC_FAN_FULLSPEED > 7 >= TP_EC_FAN_AUTO
8721 *
8722 * We expect the firmware to set either 7 or AUTO, but we
8723 * handle FULLSPEED out of paranoia.
8724 *
8725 * So, we can safely only restore FULLSPEED or 7, anything
8726 * else could slow the fan. Restoring AUTO is useless, at
8727 * best that's exactly what the DSDT already set (it is the
8728 * slower it uses).
8729 *
8730 * Always keep in mind that the DSDT *will* have set the
8731 * fans to what the vendor supposes is the best level. We
8732 * muck with it only to speed the fan up.
8733 */
8734 if (fan_control_resume_level != 7 &&
8735 !(fan_control_resume_level & TP_EC_FAN_FULLSPEED))
8736 return;
8737 else
8738 do_set = !(current_level & TP_EC_FAN_FULLSPEED) &&
8739 (current_level != fan_control_resume_level);
75700e53
HMH		 8740 break;
8741 default:
8742 return;
8743 }
8744 if (do_set) {
0978e012
JP		 8745 pr_notice("restoring fan level to 0x%02x\n",
8746 fan_control_resume_level);
0081b162
HMH		 8747 rc = fan_set_level_safe(fan_control_resume_level);
8748 if (rc < 0)
0978e012 8749 pr_notice("failed to restore fan level: %d\n", rc);
75700e53
HMH		 8750 }
8751}
8752
887965e6 8753static int fan_read(struct seq_file *m)
56b6aeb0 8754{
56b6aeb0
HMH		 8755 int rc;
8756 u8 status;
8757 unsigned int speed = 0;
8758
8759 switch (fan_status_access_mode) {
efa27145 8760 case TPACPI_FAN_RD_ACPI_GFAN:
56b6aeb0 8761 /* 570, 600e/x, 770e, 770x */
35ff8b9f
HMH		 8762 rc = fan_get_status_safe(&status);
8763 if (rc < 0)
56b6aeb0
HMH		 8764 return rc;
8765
887965e6 8766 seq_printf(m, "status:\t\t%s\n"
56b6aeb0
HMH		 8767 "level:\t\t%d\n",
8768 (status != 0) ? "enabled" : "disabled", status);
8769 break;
8770
efa27145 8771 case TPACPI_FAN_RD_TPEC:
56b6aeb0 8772 /* all except 570, 600e/x, 770e, 770x */
35ff8b9f
HMH		 8773 rc = fan_get_status_safe(&status);
8774 if (rc < 0)
56b6aeb0
HMH		 8775 return rc;
8776
887965e6 8777 seq_printf(m, "status:\t\t%s\n",
56b6aeb0
HMH		 8778 (status != 0) ? "enabled" : "disabled");
8779
35ff8b9f
HMH		 8780 rc = fan_get_speed(&speed);
8781 if (rc < 0)
56b6aeb0
HMH		 8782 return rc;
8783
887965e6 8784 seq_printf(m, "speed:\t\t%d\n", speed);
56b6aeb0 8785
efa27145 8786 if (status & TP_EC_FAN_FULLSPEED)
56b6aeb0 8787 /* Disengaged mode takes precedence */
887965e6 8788 seq_printf(m, "level:\t\tdisengaged\n");
efa27145 8789 else if (status & TP_EC_FAN_AUTO)
887965e6 8790 seq_printf(m, "level:\t\tauto\n");
56b6aeb0 8791 else
887965e6 8792 seq_printf(m, "level:\t\t%d\n", status);
56b6aeb0
HMH		 8793 break;
8794
efa27145 8795 case TPACPI_FAN_NONE:
56b6aeb0 8796 default:
887965e6 8797 seq_printf(m, "status:\t\tnot supported\n");
56b6aeb0
HMH		 8798 }
8799
efa27145 8800 if (fan_control_commands & TPACPI_FAN_CMD_LEVEL) {
887965e6 8801 seq_printf(m, "commands:\tlevel <level>");
56b6aeb0
HMH		 8802
8803 switch (fan_control_access_mode) {
efa27145 8804 case TPACPI_FAN_WR_ACPI_SFAN:
887965e6 8805 seq_printf(m, " (<level> is 0-7)\n");
56b6aeb0
HMH		 8806 break;
8807
8808 default:
887965e6 8809 seq_printf(m, " (<level> is 0-7, "
fe98a52c 8810 "auto, disengaged, full-speed)\n");
56b6aeb0
HMH		 8811 break;
8812 }
8813 }
18ad7996 8814
efa27145 8815 if (fan_control_commands & TPACPI_FAN_CMD_ENABLE)
887965e6 8816 seq_printf(m, "commands:\tenable, disable\n"
35ff8b9f
HMH		 8817 "commands:\twatchdog <timeout> (<timeout> "
8818 "is 0 (off), 1-120 (seconds))\n");
1da177e4 8819
efa27145 8820 if (fan_control_commands & TPACPI_FAN_CMD_SPEED)
887965e6 8821 seq_printf(m, "commands:\tspeed <speed>"
56b6aeb0
HMH		 8822 " (<speed> is 0-65535)\n");
8823
887965e6 8824 return 0;
78f81cc4
BD		 8825}
8826
18ad7996
HMH		 8827static int fan_write_cmd_level(const char *cmd, int *rc)
8828{
8829 int level;
8830
a12095c2 8831 if (strlencmp(cmd, "level auto") == 0)
efa27145 8832 level = TP_EC_FAN_AUTO;
fe98a52c 8833 else if ((strlencmp(cmd, "level disengaged") == 0) |
35ff8b9f 8834 (strlencmp(cmd, "level full-speed") == 0))
efa27145 8835 level = TP_EC_FAN_FULLSPEED;
a12095c2 8836 else if (sscanf(cmd, "level %d", &level) != 1)
18ad7996
HMH		 8837 return 0;
8838
35ff8b9f
HMH		 8839 *rc = fan_set_level_safe(level);
8840 if (*rc == -ENXIO)
0978e012
JP		 8841 pr_err("level command accepted for unsupported access mode %d\n",
8842 fan_control_access_mode);
74a60c0f
HMH		 8843 else if (!*rc)
8844 tpacpi_disclose_usertask("procfs fan",
8845 "set level to %d\n", level);
18ad7996
HMH		 8846
8847 return 1;
8848}
8849
8850static int fan_write_cmd_enable(const char *cmd, int *rc)
8851{
8852 if (strlencmp(cmd, "enable") != 0)
8853 return 0;
8854
35ff8b9f
HMH		 8855 *rc = fan_set_enable();
8856 if (*rc == -ENXIO)
0978e012
JP		 8857 pr_err("enable command accepted for unsupported access mode %d\n",
8858 fan_control_access_mode);
74a60c0f
HMH		 8859 else if (!*rc)
8860 tpacpi_disclose_usertask("procfs fan", "enable\n");
18ad7996
HMH		 8861
8862 return 1;
8863}
8864
8865static int fan_write_cmd_disable(const char *cmd, int *rc)
8866{
8867 if (strlencmp(cmd, "disable") != 0)
8868 return 0;
8869
35ff8b9f
HMH		 8870 *rc = fan_set_disable();
8871 if (*rc == -ENXIO)
0978e012
JP		 8872 pr_err("disable command accepted for unsupported access mode %d\n",
8873 fan_control_access_mode);
74a60c0f
HMH		 8874 else if (!*rc)
8875 tpacpi_disclose_usertask("procfs fan", "disable\n");
18ad7996
HMH		 8876
8877 return 1;
8878}
8879
8880static int fan_write_cmd_speed(const char *cmd, int *rc)
8881{
8882 int speed;
8883
a8b7a662
HMH		 8884 /* TODO:
8885 * Support speed <low> <medium> <high> ? */
8886
18ad7996
HMH		 8887 if (sscanf(cmd, "speed %d", &speed) != 1)
8888 return 0;
8889
35ff8b9f
HMH		 8890 *rc = fan_set_speed(speed);
8891 if (*rc == -ENXIO)
0978e012
JP		 8892 pr_err("speed command accepted for unsupported access mode %d\n",
8893 fan_control_access_mode);
74a60c0f
HMH		 8894 else if (!*rc)
8895 tpacpi_disclose_usertask("procfs fan",
8896 "set speed to %d\n", speed);
18ad7996
HMH		 8897
8898 return 1;
8899}
8900
16663a87
HMH		 8901static int fan_write_cmd_watchdog(const char *cmd, int *rc)
8902{
8903 int interval;
8904
8905 if (sscanf(cmd, "watchdog %d", &interval) != 1)
8906 return 0;
8907
8908 if (interval < 0 || interval > 120)
8909 *rc = -EINVAL;
74a60c0f 8910 else {
16663a87 8911 fan_watchdog_maxinterval = interval;
74a60c0f
HMH		 8912 tpacpi_disclose_usertask("procfs fan",
8913 "set watchdog timer to %d\n",
8914 interval);
8915 }
16663a87
HMH		 8916
8917 return 1;
8918}
8919
18ad7996
HMH		 8920static int fan_write(char *buf)
8921{
8922 char *cmd;
8923 int rc = 0;
8924
8925 while (!rc && (cmd = next_cmd(&buf))) {
efa27145 8926 if (!((fan_control_commands & TPACPI_FAN_CMD_LEVEL) &&
18ad7996 8927 fan_write_cmd_level(cmd, &rc)) &&
efa27145 8928 !((fan_control_commands & TPACPI_FAN_CMD_ENABLE) &&
18ad7996 8929 (fan_write_cmd_enable(cmd, &rc) ||
16663a87
HMH		 8930 fan_write_cmd_disable(cmd, &rc) ||
8931 fan_write_cmd_watchdog(cmd, &rc))) &&
efa27145 8932 !((fan_control_commands & TPACPI_FAN_CMD_SPEED) &&
18ad7996
HMH		 8933 fan_write_cmd_speed(cmd, &rc))
8934 )
8935 rc = -EINVAL;
16663a87
HMH		 8936 else if (!rc)
8937 fan_watchdog_reset();
18ad7996
HMH		 8938 }
8939
8940 return rc;
8941}
8942
a5763f22
HMH		 8943static struct ibm_struct fan_driver_data = {
8944 .name = "fan",
8945 .read = fan_read,
8946 .write = fan_write,
8947 .exit = fan_exit,
75700e53
HMH		 8948 .suspend = fan_suspend,
8949 .resume = fan_resume,
a5763f22
HMH		 8950};
8951
420f9739
DH		 8952/*************************************************************************
8953 * Mute LED subdriver
8954 */
8955
8956
8957struct tp_led_table {
8958 acpi_string name;
8959 int on_value;
8960 int off_value;
8961 int state;
8962};
8963
8964static struct tp_led_table led_tables[] = {
8965 [TPACPI_LED_MUTE] = {
8966 .name = "SSMS",
8967 .on_value = 1,
8968 .off_value = 0,
8969 },
8970 [TPACPI_LED_MICMUTE] = {
8971 .name = "MMTS",
8972 .on_value = 2,
8973 .off_value = 0,
8974 },
8975};
8976
8977static int mute_led_on_off(struct tp_led_table *t, bool state)
8978{
8979 acpi_handle temp;
8980 int output;
8981
8982 if (!ACPI_SUCCESS(acpi_get_handle(hkey_handle, t->name, &temp))) {
8983 pr_warn("Thinkpad ACPI has no %s interface.\n", t->name);
8984 return -EIO;
8985 }
8986
8987 if (!acpi_evalf(hkey_handle, &output, t->name, "dd",
8988 state ? t->on_value : t->off_value))
8989 return -EIO;
8990
8991 t->state = state;
8992 return state;
8993}
8994
8995int tpacpi_led_set(int whichled, bool on)
8996{
8997 struct tp_led_table *t;
8998
8999 if (whichled < 0 || whichled >= TPACPI_LED_MAX)
9000 return -EINVAL;
9001
9002 t = &led_tables[whichled];
9003 if (t->state < 0 || t->state == on)
9004 return t->state;
9005 return mute_led_on_off(t, on);
9006}
9007EXPORT_SYMBOL_GPL(tpacpi_led_set);
9008
9009static int mute_led_init(struct ibm_init_struct *iibm)
9010{
9011 acpi_handle temp;
9012 int i;
9013
9014 for (i = 0; i < TPACPI_LED_MAX; i++) {
9015 struct tp_led_table *t = &led_tables[i];
9016 if (ACPI_SUCCESS(acpi_get_handle(hkey_handle, t->name, &temp)))
9017 mute_led_on_off(t, false);
9018 else
9019 t->state = -ENODEV;
9020 }
9021 return 0;
9022}
9023
9024static void mute_led_exit(void)
9025{
9026 int i;
9027
9028 for (i = 0; i < TPACPI_LED_MAX; i++)
9029 tpacpi_led_set(i, false);
9030}
9031
119f4498
TI		 9032static void mute_led_resume(void)
9033{
9034 int i;
9035
9036 for (i = 0; i < TPACPI_LED_MAX; i++) {
9037 struct tp_led_table *t = &led_tables[i];
9038 if (t->state >= 0)
9039 mute_led_on_off(t, t->state);
9040 }
9041}
9042
420f9739
DH		 9043static struct ibm_struct mute_led_driver_data = {
9044 .name = "mute_led",
9045 .exit = mute_led_exit,
119f4498 9046 .resume = mute_led_resume,
420f9739
DH		 9047};
9048
56b6aeb0
HMH		 9049/****************************************************************************
9050 ****************************************************************************
9051 *
9052 * Infrastructure
9053 *
9054 ****************************************************************************
9055 ****************************************************************************/
9056
8b468c0c
HMH		 9057/*
9058 * HKEY event callout for other subdrivers go here
9059 * (yes, it is ugly, but it is quick, safe, and gets the job done
9060 */
9061static void tpacpi_driver_event(const unsigned int hkey_event)
9062{
347a2686
HMH		 9063 if (ibm_backlight_device) {
9064 switch (hkey_event) {
9065 case TP_HKEY_EV_BRGHT_UP:
9066 case TP_HKEY_EV_BRGHT_DOWN:
9067 tpacpi_brightness_notify_change();
9068 }
9069 }
0d204c34
HMH		 9070 if (alsa_card) {
9071 switch (hkey_event) {
9072 case TP_HKEY_EV_VOL_UP:
9073 case TP_HKEY_EV_VOL_DOWN:
9074 case TP_HKEY_EV_VOL_MUTE:
9075 volume_alsa_notify_change();
9076 }
9077 }
8b468c0c
HMH		 9078}
9079
8b468c0c
HMH		 9080static void hotkey_driver_event(const unsigned int scancode)
9081{
67bcae6e 9082 tpacpi_driver_event(TP_HKEY_EV_HOTKEY_BASE + scancode);
8b468c0c
HMH		 9083}
9084
7fd40029
HMH		 9085/* sysfs name ---------------------------------------------------------- */
9086static ssize_t thinkpad_acpi_pdev_name_show(struct device *dev,
9087 struct device_attribute *attr,
9088 char *buf)
9089{
e0c7dfe7 9090 return snprintf(buf, PAGE_SIZE, "%s\n", TPACPI_NAME);
7fd40029
HMH		 9091}
9092
5fb73bc2 9093static DEVICE_ATTR(name, S_IRUGO, thinkpad_acpi_pdev_name_show, NULL);
7fd40029
HMH		 9094
9095/* --------------------------------------------------------------------- */
9096
56b6aeb0 9097/* /proc support */
94954cc6 9098static struct proc_dir_entry *proc_dir;
16663a87 9099
56b6aeb0
HMH		 9100/*
9101 * Module and infrastructure proble, init and exit handling
9102 */
1da177e4 9103
90ab5ee9 9104static bool force_load;
b21a15f6 9105
fe08bc4b 9106#ifdef CONFIG_THINKPAD_ACPI_DEBUG
a5763f22 9107static const char * __init str_supported(int is_supported)
fe08bc4b 9108{
a5763f22 9109 static char text_unsupported[] __initdata = "not supported";
fe08bc4b 9110
72a979f0 9111 return (is_supported) ? &text_unsupported[4] : &text_unsupported[0];
fe08bc4b
HMH		 9112}
9113#endif /* CONFIG_THINKPAD_ACPI_DEBUG */
9114
b21a15f6
HMH		 9115static void ibm_exit(struct ibm_struct *ibm)
9116{
9117 dbg_printk(TPACPI_DBG_EXIT, "removing %s\n", ibm->name);
9118
9119 list_del_init(&ibm->all_drivers);
9120
9121 if (ibm->flags.acpi_notify_installed) {
9122 dbg_printk(TPACPI_DBG_EXIT,
9123 "%s: acpi_remove_notify_handler\n", ibm->name);
9124 BUG_ON(!ibm->acpi);
9125 acpi_remove_notify_handler(*ibm->acpi->handle,
9126 ibm->acpi->type,
9127 dispatch_acpi_notify);
9128 ibm->flags.acpi_notify_installed = 0;
b21a15f6
HMH		 9129 }
9130
9131 if (ibm->flags.proc_created) {
9132 dbg_printk(TPACPI_DBG_EXIT,
9133 "%s: remove_proc_entry\n", ibm->name);
9134 remove_proc_entry(ibm->name, proc_dir);
9135 ibm->flags.proc_created = 0;
9136 }
9137
9138 if (ibm->flags.acpi_driver_registered) {
9139 dbg_printk(TPACPI_DBG_EXIT,
9140 "%s: acpi_bus_unregister_driver\n", ibm->name);
9141 BUG_ON(!ibm->acpi);
9142 acpi_bus_unregister_driver(ibm->acpi->driver);
9143 kfree(ibm->acpi->driver);
9144 ibm->acpi->driver = NULL;
9145 ibm->flags.acpi_driver_registered = 0;
9146 }
9147
9148 if (ibm->flags.init_called && ibm->exit) {
9149 ibm->exit();
9150 ibm->flags.init_called = 0;
9151 }
9152
9153 dbg_printk(TPACPI_DBG_INIT, "finished removing %s\n", ibm->name);
9154}
f74a27d4 9155
a5763f22 9156static int __init ibm_init(struct ibm_init_struct *iibm)
1da177e4
LT		 9157{
9158 int ret;
a5763f22 9159 struct ibm_struct *ibm = iibm->data;
1da177e4
LT		 9160 struct proc_dir_entry *entry;
9161
a5763f22
HMH		 9162 BUG_ON(ibm == NULL);
9163
9164 INIT_LIST_HEAD(&ibm->all_drivers);
9165
92641177 9166 if (ibm->flags.experimental && !experimental)
1da177e4
LT		 9167 return 0;
9168
fe08bc4b
HMH		 9169 dbg_printk(TPACPI_DBG_INIT,
9170 "probing for %s\n", ibm->name);
9171
a5763f22
HMH		 9172 if (iibm->init) {
9173 ret = iibm->init(iibm);
5fba344c
HMH		 9174 if (ret > 0)
9175 return 0; /* probe failed */
9176 if (ret)
1da177e4 9177 return ret;
a5763f22 9178
92641177 9179 ibm->flags.init_called = 1;
1da177e4
LT		 9180 }
9181
8d376cd6
HMH		 9182 if (ibm->acpi) {
9183 if (ibm->acpi->hid) {
9184 ret = register_tpacpi_subdriver(ibm);
9185 if (ret)
9186 goto err_out;
9187 }
5fba344c 9188
8d376cd6
HMH		 9189 if (ibm->acpi->notify) {
9190 ret = setup_acpi_notify(ibm);
9191 if (ret == -ENODEV) {
0978e012
JP		 9192 pr_notice("disabling subdriver %s\n",
9193 ibm->name);
8d376cd6
HMH		 9194 ret = 0;
9195 goto err_out;
9196 }
9197 if (ret < 0)
9198 goto err_out;
5fba344c 9199 }
5fba344c
HMH		 9200 }
9201
fe08bc4b
HMH		 9202 dbg_printk(TPACPI_DBG_INIT,
9203 "%s installed\n", ibm->name);
9204
78f81cc4 9205 if (ibm->read) {
d161a13f 9206 umode_t mode = iibm->base_procfs_mode;
887965e6 9207
b525c06c
HMH		 9208 if (!mode)
9209 mode = S_IRUGO;
887965e6
AD		 9210 if (ibm->write)
9211 mode |= S_IWUSR;
9212 entry = proc_create_data(ibm->name, mode, proc_dir,
9213 &dispatch_proc_fops, ibm);
78f81cc4 9214 if (!entry) {
0978e012 9215 pr_err("unable to create proc entry %s\n", ibm->name);
5fba344c
HMH		 9216 ret = -ENODEV;
9217 goto err_out;
78f81cc4 9218 }
92641177 9219 ibm->flags.proc_created = 1;
78f81cc4 9220 }
1da177e4 9221
a5763f22
HMH		 9222 list_add_tail(&ibm->all_drivers, &tpacpi_all_drivers);
9223
1da177e4 9224 return 0;
5fba344c
HMH		 9225
9226err_out:
fe08bc4b
HMH		 9227 dbg_printk(TPACPI_DBG_INIT,
9228 "%s: at error exit path with result %d\n",
9229 ibm->name, ret);
9230
5fba344c 9231 ibm_exit(ibm);
72a979f0 9232 return (ret < 0) ? ret : 0;
1da177e4
LT		 9233}
9234
56b6aeb0
HMH		 9235/* Probing */
9236
050df107
HMH		 9237static bool __pure __init tpacpi_is_fw_digit(const char c)
9238{
9239 return (c >= '0' && c <= '9') || (c >= 'A' && c <= 'Z');
9240}
9241
72a979f0 9242static bool __pure __init tpacpi_is_valid_fw_id(const char * const s,
050df107
HMH		 9243 const char t)
9244{
1b0eb5bc
AL		 9245 /*
9246 * Most models: xxyTkkWW (#.##c)
9247 * Ancient 570/600 and -SL lacks (#.##c)
9248 */
9249 if (s && strlen(s) >= 8 &&
050df107
HMH		 9250 tpacpi_is_fw_digit(s[0]) &&
9251 tpacpi_is_fw_digit(s[1]) &&
16a3d9f5
MI		 9252 s[2] == t &&
9253 (s[3] == 'T' || s[3] == 'N') &&
050df107 9254 tpacpi_is_fw_digit(s[4]) &&
1b0eb5bc
AL		 9255 tpacpi_is_fw_digit(s[5]))
9256 return true;
9257
9258 /* New models: xxxyTkkW (#.##c); T550 and some others */
9259 return s && strlen(s) >= 8 &&
9260 tpacpi_is_fw_digit(s[0]) &&
9261 tpacpi_is_fw_digit(s[1]) &&
9262 tpacpi_is_fw_digit(s[2]) &&
9263 s[3] == t &&
9264 (s[4] == 'T' || s[4] == 'N') &&
9265 tpacpi_is_fw_digit(s[5]) &&
9266 tpacpi_is_fw_digit(s[6]);
050df107
HMH		 9267}
9268
bf20e740
HMH		 9269/* returns 0 - probe ok, or < 0 - probe error.
9270 * Probe ok doesn't mean thinkpad found.
9271 * On error, kfree() cleanup on tp->* is not performed, caller must do it */
9272static int __must_check __init get_thinkpad_model_data(
9273 struct thinkpad_id_data *tp)
1da177e4 9274{
1855256c 9275 const struct dmi_device *dev = NULL;
56b6aeb0 9276 char ec_fw_string[18];
bf20e740 9277 char const *s;
1da177e4 9278
d5a2f2f1 9279 if (!tp)
bf20e740 9280 return -EINVAL;
d5a2f2f1
HMH		 9281
9282 memset(tp, 0, sizeof(*tp));
9283
9284 if (dmi_name_in_vendors("IBM"))
9285 tp->vendor = PCI_VENDOR_ID_IBM;
9286 else if (dmi_name_in_vendors("LENOVO"))
9287 tp->vendor = PCI_VENDOR_ID_LENOVO;
9288 else
bf20e740 9289 return 0;
d5a2f2f1 9290
bf20e740
HMH		 9291 s = dmi_get_system_info(DMI_BIOS_VERSION);
9292 tp->bios_version_str = kstrdup(s, GFP_KERNEL);
9293 if (s && !tp->bios_version_str)
9294 return -ENOMEM;
050df107
HMH		 9295
9296 /* Really ancient ThinkPad 240X will fail this, which is fine */
16a3d9f5
MI		 9297 if (!(tpacpi_is_valid_fw_id(tp->bios_version_str, 'E') ||
9298 tpacpi_is_valid_fw_id(tp->bios_version_str, 'C')))
bf20e740 9299 return 0;
050df107 9300
d5a2f2f1
HMH		 9301 tp->bios_model = tp->bios_version_str[0]
9302 | (tp->bios_version_str[1] << 8);
050df107
HMH		 9303 tp->bios_release = (tp->bios_version_str[4] << 8)
9304 | tp->bios_version_str[5];
d5a2f2f1 9305
56b6aeb0
HMH		 9306 /*
9307 * ThinkPad T23 or newer, A31 or newer, R50e or newer,
9308 * X32 or newer, all Z series; Some models must have an
9309 * up-to-date BIOS or they will not be detected.
9310 *
9311 * See http://thinkwiki.org/wiki/List_of_DMI_IDs
9312 */
9313 while ((dev = dmi_find_device(DMI_DEV_TYPE_OEM_STRING, NULL, dev))) {
9314 if (sscanf(dev->name,
9315 "IBM ThinkPad Embedded Controller -[%17c",
9316 ec_fw_string) == 1) {
9317 ec_fw_string[sizeof(ec_fw_string) - 1] = 0;
9318 ec_fw_string[strcspn(ec_fw_string, " ]")] = 0;
d5a2f2f1
HMH		 9319
9320 tp->ec_version_str = kstrdup(ec_fw_string, GFP_KERNEL);
bf20e740
HMH		 9321 if (!tp->ec_version_str)
9322 return -ENOMEM;
050df107
HMH		 9323
9324 if (tpacpi_is_valid_fw_id(ec_fw_string, 'H')) {
9325 tp->ec_model = ec_fw_string[0]
9326 | (ec_fw_string[1] << 8);
9327 tp->ec_release = (ec_fw_string[4] << 8)
9328 | ec_fw_string[5];
9329 } else {
0978e012
JP		 9330 pr_notice("ThinkPad firmware release %s "
9331 "doesn't match the known patterns\n",
9332 ec_fw_string);
9333 pr_notice("please report this to %s\n",
9334 TPACPI_MAIL);
050df107 9335 }
d5a2f2f1 9336 break;
78f81cc4 9337 }
1da177e4 9338 }
d5a2f2f1 9339
bf20e740 9340 s = dmi_get_system_info(DMI_PRODUCT_VERSION);
40f5c777 9341 if (s && !(strncasecmp(s, "ThinkPad", 8) && strncasecmp(s, "Lenovo", 6))) {
bf20e740
HMH		 9342 tp->model_str = kstrdup(s, GFP_KERNEL);
9343 if (!tp->model_str)
9344 return -ENOMEM;
a4f46bb9
MI		 9345 } else {
9346 s = dmi_get_system_info(DMI_BIOS_VENDOR);
40f5c777 9347 if (s && !(strncasecmp(s, "Lenovo", 6))) {
a4f46bb9
MI		 9348 tp->model_str = kstrdup(s, GFP_KERNEL);
9349 if (!tp->model_str)
9350 return -ENOMEM;
9351 }
d5a2f2f1 9352 }
8c74adbc 9353
bf20e740
HMH		 9354 s = dmi_get_system_info(DMI_PRODUCT_NAME);
9355 tp->nummodel_str = kstrdup(s, GFP_KERNEL);
9356 if (s && !tp->nummodel_str)
9357 return -ENOMEM;
9358
9359 return 0;
1da177e4
LT		 9360}
9361
5fba344c
HMH		 9362static int __init probe_for_thinkpad(void)
9363{
9364 int is_thinkpad;
9365
9366 if (acpi_disabled)
9367 return -ENODEV;
9368
e28393c0
HMH		 9369 /* It would be dangerous to run the driver in this case */
9370 if (!tpacpi_is_ibm() && !tpacpi_is_lenovo())
9371 return -ENODEV;
9372
5fba344c
HMH		 9373 /*
9374 * Non-ancient models have better DMI tagging, but very old models
e675abaf 9375 * don't. tpacpi_is_fw_known() is a cheat to help in that case.
5fba344c 9376 */
e675abaf
HMH		 9377 is_thinkpad = (thinkpad_id.model_str != NULL) ||
9378 (thinkpad_id.ec_model != 0) ||
9379 tpacpi_is_fw_known();
5fba344c 9380
437e470c
HMH		 9381 /* The EC handler is required */
9382 tpacpi_acpi_handle_locate("ec", TPACPI_ACPI_EC_HID, &ec_handle);
5fba344c
HMH		 9383 if (!ec_handle) {
9384 if (is_thinkpad)
0978e012 9385 pr_err("Not yet supported ThinkPad detected!\n");
5fba344c
HMH		 9386 return -ENODEV;
9387 }
9388
0dcef77c
HMH		 9389 if (!is_thinkpad && !force_load)
9390 return -ENODEV;
9391
5fba344c
HMH		 9392 return 0;
9393}
9394
7a43f788
HMH		 9395static void __init thinkpad_acpi_init_banner(void)
9396{
0978e012
JP		 9397 pr_info("%s v%s\n", TPACPI_DESC, TPACPI_VERSION);
9398 pr_info("%s\n", TPACPI_URL);
7a43f788 9399
0978e012 9400 pr_info("ThinkPad BIOS %s, EC %s\n",
7a43f788
HMH		 9401 (thinkpad_id.bios_version_str) ?
9402 thinkpad_id.bios_version_str : "unknown",
9403 (thinkpad_id.ec_version_str) ?
9404 thinkpad_id.ec_version_str : "unknown");
9405
9406 BUG_ON(!thinkpad_id.vendor);
9407
9408 if (thinkpad_id.model_str)
0978e012 9409 pr_info("%s %s, model %s\n",
7a43f788
HMH		 9410 (thinkpad_id.vendor == PCI_VENDOR_ID_IBM) ?
9411 "IBM" : ((thinkpad_id.vendor ==
9412 PCI_VENDOR_ID_LENOVO) ?
9413 "Lenovo" : "Unknown vendor"),
9414 thinkpad_id.model_str,
9415 (thinkpad_id.nummodel_str) ?
9416 thinkpad_id.nummodel_str : "unknown");
9417}
5fba344c 9418
56b6aeb0 9419/* Module init, exit, parameters */
1da177e4 9420
a5763f22
HMH		 9421static struct ibm_init_struct ibms_init[] __initdata = {
9422 {
a5763f22
HMH		 9423 .data = &thinkpad_acpi_driver_data,
9424 },
9425 {
9426 .init = hotkey_init,
9427 .data = &hotkey_driver_data,
9428 },
9429 {
9430 .init = bluetooth_init,
9431 .data = &bluetooth_driver_data,
9432 },
9433 {
9434 .init = wan_init,
9435 .data = &wan_driver_data,
9436 },
0045c0aa
HMH		 9437 {
9438 .init = uwb_init,
9439 .data = &uwb_driver_data,
9440 },
d7c1d17d 9441#ifdef CONFIG_THINKPAD_ACPI_VIDEO
a5763f22
HMH		 9442 {
9443 .init = video_init,
b525c06c 9444 .base_procfs_mode = S_IRUSR,
a5763f22
HMH		 9445 .data = &video_driver_data,
9446 },
d7c1d17d 9447#endif
bb28f3d5
PR		 9448 {
9449 .init = kbdlight_init,
9450 .data = &kbdlight_driver_data,
9451 },
a5763f22
HMH		 9452 {
9453 .init = light_init,
9454 .data = &light_driver_data,
9455 },
a5763f22
HMH		 9456 {
9457 .init = cmos_init,
9458 .data = &cmos_driver_data,
9459 },
9460 {
9461 .init = led_init,
9462 .data = &led_driver_data,
9463 },
9464 {
9465 .init = beep_init,
9466 .data = &beep_driver_data,
9467 },
9468 {
9469 .init = thermal_init,
9470 .data = &thermal_driver_data,
9471 },
a5763f22
HMH		 9472 {
9473 .init = brightness_init,
9474 .data = &brightness_driver_data,
9475 },
9476 {
329e4e18 9477 .init = volume_init,
a5763f22
HMH		 9478 .data = &volume_driver_data,
9479 },
9480 {
9481 .init = fan_init,
9482 .data = &fan_driver_data,
9483 },
420f9739
DH		 9484 {
9485 .init = mute_led_init,
9486 .data = &mute_led_driver_data,
9487 },
a5763f22
HMH		 9488};
9489
3945ac36 9490static int __init set_ibm_param(const char *val, struct kernel_param *kp)
1da177e4
LT		 9491{
9492 unsigned int i;
a5763f22 9493 struct ibm_struct *ibm;
1da177e4 9494
59f91ff1
HMH		 9495 if (!kp || !kp->name || !val)
9496 return -EINVAL;
9497
a5763f22
HMH		 9498 for (i = 0; i < ARRAY_SIZE(ibms_init); i++) {
9499 ibm = ibms_init[i].data;
59f91ff1
HMH		 9500 WARN_ON(ibm == NULL);
9501
9502 if (!ibm || !ibm->name)
9503 continue;
a5763f22
HMH		 9504
9505 if (strcmp(ibm->name, kp->name) == 0 && ibm->write) {
9506 if (strlen(val) > sizeof(ibms_init[i].param) - 2)
78f81cc4 9507 return -ENOSPC;
a5763f22
HMH		 9508 strcpy(ibms_init[i].param, val);
9509 strcat(ibms_init[i].param, ",");
78f81cc4
BD		 9510 return 0;
9511 }
a5763f22 9512 }
1da177e4 9513
1da177e4
LT		 9514 return -EINVAL;
9515}
9516
b09c7225 9517module_param(experimental, int, 0444);
f68080f8 9518MODULE_PARM_DESC(experimental,
35ff8b9f 9519 "Enables experimental features when non-zero");
56b6aeb0 9520
132ce091 9521module_param_named(debug, dbg_level, uint, 0);
f68080f8 9522MODULE_PARM_DESC(debug, "Sets debug level bit-mask");
132ce091 9523
b09c7225 9524module_param(force_load, bool, 0444);
f68080f8 9525MODULE_PARM_DESC(force_load,
35ff8b9f
HMH		 9526 "Attempts to load the driver even on a "
9527 "mis-identified ThinkPad when true");
0dcef77c 9528
b09c7225 9529module_param_named(fan_control, fan_control_allowed, bool, 0444);
f68080f8 9530MODULE_PARM_DESC(fan_control,
35ff8b9f 9531 "Enables setting fan parameters features when true");
ecf2a80a 9532
b09c7225 9533module_param_named(brightness_mode, brightness_mode, uint, 0444);
f68080f8 9534MODULE_PARM_DESC(brightness_mode,
35ff8b9f 9535 "Selects brightness control strategy: "
0e501834 9536 "0=auto, 1=EC, 2=UCMS, 3=EC+NVRAM");
24d3b774 9537
b09c7225 9538module_param(brightness_enable, uint, 0444);
f68080f8 9539MODULE_PARM_DESC(brightness_enable,
35ff8b9f 9540 "Enables backlight control when 1, disables when 0");
87cc537a 9541
ff850c33 9542#ifdef CONFIG_THINKPAD_ACPI_ALSA_SUPPORT
329e4e18
HMH		 9543module_param_named(volume_mode, volume_mode, uint, 0444);
9544MODULE_PARM_DESC(volume_mode,
9545 "Selects volume control strategy: "
9546 "0=auto, 1=EC, 2=N/A, 3=EC+NVRAM");
9547
a112ceee
HMH		 9548module_param_named(volume_capabilities, volume_capabilities, uint, 0444);
9549MODULE_PARM_DESC(volume_capabilities,
9550 "Selects the mixer capabilites: "
9551 "0=auto, 1=volume and mute, 2=mute only");
9552
c7ac6291
HMH		 9553module_param_named(volume_control, volume_control_allowed, bool, 0444);
9554MODULE_PARM_DESC(volume_control,
9555 "Enables software override for the console audio "
9556 "control when true");
9557
9a417ec0
AL		 9558module_param_named(software_mute, software_mute_requested, bool, 0444);
9559MODULE_PARM_DESC(software_mute,
9560 "Request full software mute control");
9561
0d204c34
HMH		 9562/* ALSA module API parameters */
9563module_param_named(index, alsa_index, int, 0444);
9564MODULE_PARM_DESC(index, "ALSA index for the ACPI EC Mixer");
9565module_param_named(id, alsa_id, charp, 0444);
9566MODULE_PARM_DESC(id, "ALSA id for the ACPI EC Mixer");
9567module_param_named(enable, alsa_enable, bool, 0444);
9568MODULE_PARM_DESC(enable, "Enable the ALSA interface for the ACPI EC Mixer");
ff850c33 9569#endif /* CONFIG_THINKPAD_ACPI_ALSA_SUPPORT */
0d204c34 9570
e0c7dfe7 9571#define TPACPI_PARAM(feature) \
f68080f8 9572 module_param_call(feature, set_ibm_param, NULL, NULL, 0); \
cbb14842 9573 MODULE_PARM_DESC(feature, "Simulates thinkpad-acpi procfs command " \
35ff8b9f 9574 "at module load, see documentation")
1da177e4 9575
e0c7dfe7
HMH		 9576TPACPI_PARAM(hotkey);
9577TPACPI_PARAM(bluetooth);
9578TPACPI_PARAM(video);
9579TPACPI_PARAM(light);
e0c7dfe7
HMH		 9580TPACPI_PARAM(cmos);
9581TPACPI_PARAM(led);
9582TPACPI_PARAM(beep);
e0c7dfe7
HMH		 9583TPACPI_PARAM(brightness);
9584TPACPI_PARAM(volume);
9585TPACPI_PARAM(fan);
78f81cc4 9586
a73f3091 9587#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
b09c7225 9588module_param(dbg_wlswemul, uint, 0444);
a73f3091
HMH		 9589MODULE_PARM_DESC(dbg_wlswemul, "Enables WLSW emulation");
9590module_param_named(wlsw_state, tpacpi_wlsw_emulstate, bool, 0);
9591MODULE_PARM_DESC(wlsw_state,
9592 "Initial state of the emulated WLSW switch");
9593
b09c7225 9594module_param(dbg_bluetoothemul, uint, 0444);
a73f3091
HMH		 9595MODULE_PARM_DESC(dbg_bluetoothemul, "Enables bluetooth switch emulation");
9596module_param_named(bluetooth_state, tpacpi_bluetooth_emulstate, bool, 0);
9597MODULE_PARM_DESC(bluetooth_state,
9598 "Initial state of the emulated bluetooth switch");
9599
b09c7225 9600module_param(dbg_wwanemul, uint, 0444);
a73f3091
HMH		 9601MODULE_PARM_DESC(dbg_wwanemul, "Enables WWAN switch emulation");
9602module_param_named(wwan_state, tpacpi_wwan_emulstate, bool, 0);
9603MODULE_PARM_DESC(wwan_state,
9604 "Initial state of the emulated WWAN switch");
0045c0aa 9605
b09c7225 9606module_param(dbg_uwbemul, uint, 0444);
0045c0aa
HMH		 9607MODULE_PARM_DESC(dbg_uwbemul, "Enables UWB switch emulation");
9608module_param_named(uwb_state, tpacpi_uwb_emulstate, bool, 0);
9609MODULE_PARM_DESC(uwb_state,
9610 "Initial state of the emulated UWB switch");
a73f3091
HMH		 9611#endif
9612
b21a15f6
HMH		 9613static void thinkpad_acpi_module_exit(void)
9614{
9615 struct ibm_struct *ibm, *itmp;
9616
9617 tpacpi_lifecycle = TPACPI_LIFE_EXITING;
9618
9619 list_for_each_entry_safe_reverse(ibm, itmp,
9620 &tpacpi_all_drivers,
9621 all_drivers) {
9622 ibm_exit(ibm);
9623 }
9624
9625 dbg_printk(TPACPI_DBG_INIT, "finished subdriver exit path...\n");
9626
9627 if (tpacpi_inputdev) {
9628 if (tp_features.input_device_registered)
9629 input_unregister_device(tpacpi_inputdev);
9630 else
9631 input_free_device(tpacpi_inputdev);
00d39597 9632 kfree(hotkey_keycode_map);
b21a15f6
HMH		 9633 }
9634
9635 if (tpacpi_hwmon)
9636 hwmon_device_unregister(tpacpi_hwmon);
9637
9638 if (tp_features.sensors_pdev_attrs_registered)
5fb73bc2 9639 device_remove_file(&tpacpi_sensors_pdev->dev, &dev_attr_name);
b21a15f6
HMH		 9640 if (tpacpi_sensors_pdev)
9641 platform_device_unregister(tpacpi_sensors_pdev);
9642 if (tpacpi_pdev)
9643 platform_device_unregister(tpacpi_pdev);
9644
9645 if (tp_features.sensors_pdrv_attrs_registered)
9646 tpacpi_remove_driver_attributes(&tpacpi_hwmon_pdriver.driver);
9647 if (tp_features.platform_drv_attrs_registered)
9648 tpacpi_remove_driver_attributes(&tpacpi_pdriver.driver);
9649
9650 if (tp_features.sensors_pdrv_registered)
9651 platform_driver_unregister(&tpacpi_hwmon_pdriver);
9652
9653 if (tp_features.platform_drv_registered)
9654 platform_driver_unregister(&tpacpi_pdriver);
9655
9656 if (proc_dir)
e0c7dfe7 9657 remove_proc_entry(TPACPI_PROC_DIR, acpi_root_dir);
b21a15f6 9658
e0e3c061
HMH		 9659 if (tpacpi_wq)
9660 destroy_workqueue(tpacpi_wq);
9661
b21a15f6
HMH		 9662 kfree(thinkpad_id.bios_version_str);
9663 kfree(thinkpad_id.ec_version_str);
9664 kfree(thinkpad_id.model_str);
d2be15bd 9665 kfree(thinkpad_id.nummodel_str);
b21a15f6
HMH		 9666}
9667
f74a27d4 9668
1def7115 9669static int __init thinkpad_acpi_module_init(void)
1da177e4
LT		 9670{
9671 int ret, i;
9672
8fef502e
HMH		 9673 tpacpi_lifecycle = TPACPI_LIFE_INIT;
9674
54ae1501 9675 /* Driver-level probe */
d5a2f2f1 9676
bf20e740
HMH		 9677 ret = get_thinkpad_model_data(&thinkpad_id);
9678 if (ret) {
0978e012 9679 pr_err("unable to get DMI data: %d\n", ret);
bf20e740
HMH		 9680 thinkpad_acpi_module_exit();
9681 return ret;
9682 }
5fba344c 9683 ret = probe_for_thinkpad();
d5a2f2f1
HMH		 9684 if (ret) {
9685 thinkpad_acpi_module_exit();
5fba344c 9686 return ret;
d5a2f2f1 9687 }
1da177e4 9688
54ae1501 9689 /* Driver initialization */
d5a2f2f1 9690
7a43f788
HMH		 9691 thinkpad_acpi_init_banner();
9692 tpacpi_check_outdated_fw();
9693
e0c7dfe7
HMH		 9694 TPACPI_ACPIHANDLE_INIT(ecrd);
9695 TPACPI_ACPIHANDLE_INIT(ecwr);
1da177e4 9696
e0e3c061
HMH		 9697 tpacpi_wq = create_singlethread_workqueue(TPACPI_WORKQUEUE_NAME);
9698 if (!tpacpi_wq) {
9699 thinkpad_acpi_module_exit();
9700 return -ENOMEM;
9701 }
9702
e0c7dfe7 9703 proc_dir = proc_mkdir(TPACPI_PROC_DIR, acpi_root_dir);
1da177e4 9704 if (!proc_dir) {
0978e012 9705 pr_err("unable to create proc dir " TPACPI_PROC_DIR "\n");
1def7115 9706 thinkpad_acpi_module_exit();
1da177e4
LT		 9707 return -ENODEV;
9708 }
78f81cc4 9709
54ae1501
HMH		 9710 ret = platform_driver_register(&tpacpi_pdriver);
9711 if (ret) {
0978e012 9712 pr_err("unable to register main platform driver\n");
54ae1501
HMH		 9713 thinkpad_acpi_module_exit();
9714 return ret;
9715 }
ac36393d
HMH		 9716 tp_features.platform_drv_registered = 1;
9717
7fd40029
HMH		 9718 ret = platform_driver_register(&tpacpi_hwmon_pdriver);
9719 if (ret) {
0978e012 9720 pr_err("unable to register hwmon platform driver\n");
7fd40029
HMH		 9721 thinkpad_acpi_module_exit();
9722 return ret;
9723 }
9724 tp_features.sensors_pdrv_registered = 1;
9725
176750d6 9726 ret = tpacpi_create_driver_attributes(&tpacpi_pdriver.driver);
2369cc94
HMH		 9727 if (!ret) {
9728 tp_features.platform_drv_attrs_registered = 1;
35ff8b9f
HMH		 9729 ret = tpacpi_create_driver_attributes(
9730 &tpacpi_hwmon_pdriver.driver);
2369cc94 9731 }
176750d6 9732 if (ret) {
0978e012 9733 pr_err("unable to create sysfs driver attributes\n");
176750d6
HMH		 9734 thinkpad_acpi_module_exit();
9735 return ret;
9736 }
2369cc94 9737 tp_features.sensors_pdrv_attrs_registered = 1;
176750d6 9738
54ae1501
HMH		 9739
9740 /* Device initialization */
e0c7dfe7 9741 tpacpi_pdev = platform_device_register_simple(TPACPI_DRVR_NAME, -1,
54ae1501
HMH		 9742 NULL, 0);
9743 if (IS_ERR(tpacpi_pdev)) {
9744 ret = PTR_ERR(tpacpi_pdev);
9745 tpacpi_pdev = NULL;
0978e012 9746 pr_err("unable to register platform device\n");
54ae1501
HMH		 9747 thinkpad_acpi_module_exit();
9748 return ret;
9749 }
7fd40029 9750 tpacpi_sensors_pdev = platform_device_register_simple(
35ff8b9f
HMH		 9751 TPACPI_HWMON_DRVR_NAME,
9752 -1, NULL, 0);
7fd40029
HMH		 9753 if (IS_ERR(tpacpi_sensors_pdev)) {
9754 ret = PTR_ERR(tpacpi_sensors_pdev);
9755 tpacpi_sensors_pdev = NULL;
0978e012 9756 pr_err("unable to register hwmon platform device\n");
7fd40029
HMH		 9757 thinkpad_acpi_module_exit();
9758 return ret;
9759 }
5fb73bc2 9760 ret = device_create_file(&tpacpi_sensors_pdev->dev, &dev_attr_name);
7fd40029 9761 if (ret) {
0978e012 9762 pr_err("unable to create sysfs hwmon device attributes\n");
7fd40029
HMH		 9763 thinkpad_acpi_module_exit();
9764 return ret;
9765 }
9766 tp_features.sensors_pdev_attrs_registered = 1;
9767 tpacpi_hwmon = hwmon_device_register(&tpacpi_sensors_pdev->dev);
54ae1501
HMH		 9768 if (IS_ERR(tpacpi_hwmon)) {
9769 ret = PTR_ERR(tpacpi_hwmon);
9770 tpacpi_hwmon = NULL;
0978e012 9771 pr_err("unable to register hwmon device\n");
54ae1501
HMH		 9772 thinkpad_acpi_module_exit();
9773 return ret;
9774 }
8523ed6f 9775 mutex_init(&tpacpi_inputdev_send_mutex);
7f5d1cd6
HMH		 9776 tpacpi_inputdev = input_allocate_device();
9777 if (!tpacpi_inputdev) {
7f5d1cd6
HMH		 9778 thinkpad_acpi_module_exit();
9779 return -ENOMEM;
9780 } else {
9781 /* Prepare input device, but don't register */
9782 tpacpi_inputdev->name = "ThinkPad Extra Buttons";
e0c7dfe7 9783 tpacpi_inputdev->phys = TPACPI_DRVR_NAME "/input0";
7f5d1cd6 9784 tpacpi_inputdev->id.bustype = BUS_HOST;
e28393c0 9785 tpacpi_inputdev->id.vendor = thinkpad_id.vendor;
7f5d1cd6
HMH		 9786 tpacpi_inputdev->id.product = TPACPI_HKEY_INPUT_PRODUCT;
9787 tpacpi_inputdev->id.version = TPACPI_HKEY_INPUT_VERSION;
d112ef95 9788 tpacpi_inputdev->dev.parent = &tpacpi_pdev->dev;
7f5d1cd6 9789 }
77775838
HMH		 9790
9791 /* Init subdriver dependencies */
9792 tpacpi_detect_brightness_capabilities();
9793
9794 /* Init subdrivers */
a5763f22
HMH		 9795 for (i = 0; i < ARRAY_SIZE(ibms_init); i++) {
9796 ret = ibm_init(&ibms_init[i]);
9797 if (ret >= 0 && *ibms_init[i].param)
9798 ret = ibms_init[i].data->write(ibms_init[i].param);
1da177e4 9799 if (ret < 0) {
1def7115 9800 thinkpad_acpi_module_exit();
1da177e4
LT		 9801 return ret;
9802 }
9803 }
b589ea4c
HMH		 9804
9805 tpacpi_lifecycle = TPACPI_LIFE_RUNNING;
9806
7f5d1cd6
HMH		 9807 ret = input_register_device(tpacpi_inputdev);
9808 if (ret < 0) {
0978e012 9809 pr_err("unable to register input device\n");
7f5d1cd6
HMH		 9810 thinkpad_acpi_module_exit();
9811 return ret;
9812 } else {
9813 tp_features.input_device_registered = 1;
9814 }
1da177e4
LT		 9815
9816 return 0;
9817}
9818
95e57ab2
HMH		 9819MODULE_ALIAS(TPACPI_DRVR_SHORTNAME);
9820
922fe097
HMH		 9821/*
9822 * This will autoload the driver in almost every ThinkPad
9823 * in widespread use.
9824 *
9825 * Only _VERY_ old models, like the 240, 240x and 570 lack
9826 * the HKEY event interface.
9827 */
9828MODULE_DEVICE_TABLE(acpi, ibm_htk_device_ids);
9829
f68080f8
HMH		 9830/*
9831 * DMI matching for module autoloading
9832 *
9833 * See http://thinkwiki.org/wiki/List_of_DMI_IDs
9834 * See http://thinkwiki.org/wiki/BIOS_Upgrade_Downloads
9835 *
9836 * Only models listed in thinkwiki will be supported, so add yours
9837 * if it is not there yet.
9838 */
9839#define IBM_BIOS_MODULE_ALIAS(__type) \
b36a50f9 9840 MODULE_ALIAS("dmi:bvnIBM:bvr" __type "ET??WW*")
f68080f8 9841
f68080f8
HMH		 9842/* Ancient thinkpad BIOSes have to be identified by
9843 * BIOS type or model number, and there are far less
9844 * BIOS types than model numbers... */
922fe097 9845IBM_BIOS_MODULE_ALIAS("I[MU]"); /* 570, 570e */
f68080f8 9846
f68f53a2
HMH		 9847MODULE_AUTHOR("Borislav Deianov <borislav@users.sf.net>");
9848MODULE_AUTHOR("Henrique de Moraes Holschuh <hmh@hmh.eng.br>");
e0c7dfe7
HMH		 9849MODULE_DESCRIPTION(TPACPI_DESC);
9850MODULE_VERSION(TPACPI_VERSION);
f68080f8
HMH		 9851MODULE_LICENSE("GPL");
9852
1def7115
HMH		 9853module_init(thinkpad_acpi_module_init);
9854module_exit(thinkpad_acpi_module_exit);
Linux kernel - Deliverables
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