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thinkpad-acpi: disclose usertask for ALSA callbacks
[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
5d2eb14d 24#define TPACPI_VERSION "0.24"
a112ceee 25#define TPACPI_SYSFS_VERSION 0x020700
78f81cc4
BD		 26
27/*
1da177e4 28 * Changelog:
4b45cc07
HMH		 29 * 2007-10-20 changelog trimmed down
30 *
643f12db
HMH		 31 * 2007-03-27 0.14 renamed to thinkpad_acpi and moved to
32 * drivers/misc.
f9ff43a6
HMH		 33 *
34 * 2006-11-22 0.13 new maintainer
35 * changelog now lives in git commit history, and will
36 * not be updated further in-file.
837ca6dd 37 *
78f81cc4
BD		 38 * 2005-03-17 0.11 support for 600e, 770x
39 * thanks to Jamie Lentin <lentinj@dial.pipex.com>
4b45cc07
HMH		 40 *
41 * 2005-01-16 0.9 use MODULE_VERSION
78f81cc4
BD		 42 * thanks to Henrik Brix Andersen <brix@gentoo.org>
43 * fix parameter passing on module loading
44 * thanks to Rusty Russell <rusty@rustcorp.com.au>
45 * thanks to Jim Radford <radford@blackbean.org>
46 * 2004-11-08 0.8 fix init error case, don't return from a macro
47 * thanks to Chris Wright <chrisw@osdl.org>
1da177e4
LT		 48 */
49
0c78039f
HMH		 50#include <linux/kernel.h>
51#include <linux/module.h>
52#include <linux/init.h>
53#include <linux/types.h>
54#include <linux/string.h>
55#include <linux/list.h>
56#include <linux/mutex.h>
73a94d86 57#include <linux/sched.h>
0c78039f
HMH		 58#include <linux/kthread.h>
59#include <linux/freezer.h>
60#include <linux/delay.h>
5a0e3ad6 61#include <linux/slab.h>
0c78039f
HMH		 62
63#include <linux/nvram.h>
64#include <linux/proc_fs.h>
887965e6 65#include <linux/seq_file.h>
0c78039f
HMH		 66#include <linux/sysfs.h>
67#include <linux/backlight.h>
68#include <linux/fb.h>
69#include <linux/platform_device.h>
70#include <linux/hwmon.h>
71#include <linux/hwmon-sysfs.h>
72#include <linux/input.h>
4fa6811b 73#include <linux/leds.h>
0e74dc26 74#include <linux/rfkill.h>
0c78039f
HMH		 75#include <asm/uaccess.h>
76
77#include <linux/dmi.h>
78#include <linux/jiffies.h>
79#include <linux/workqueue.h>
80
0d204c34
HMH		 81#include <sound/core.h>
82#include <sound/control.h>
83#include <sound/initval.h>
84
0c78039f 85#include <acpi/acpi_drivers.h>
0c78039f
HMH		 86
87#include <linux/pci_ids.h>
88
0c78039f
HMH		 89
90/* ThinkPad CMOS commands */
91#define TP_CMOS_VOLUME_DOWN 0
92#define TP_CMOS_VOLUME_UP 1
93#define TP_CMOS_VOLUME_MUTE 2
94#define TP_CMOS_BRIGHTNESS_UP 4
95#define TP_CMOS_BRIGHTNESS_DOWN 5
4fa6811b
HMH		 96#define TP_CMOS_THINKLIGHT_ON 12
97#define TP_CMOS_THINKLIGHT_OFF 13
0c78039f
HMH		 98
99/* NVRAM Addresses */
100enum tp_nvram_addr {
101 TP_NVRAM_ADDR_HK2 = 0x57,
102 TP_NVRAM_ADDR_THINKLIGHT = 0x58,
103 TP_NVRAM_ADDR_VIDEO = 0x59,
104 TP_NVRAM_ADDR_BRIGHTNESS = 0x5e,
105 TP_NVRAM_ADDR_MIXER = 0x60,
106};
107
108/* NVRAM bit masks */
109enum {
110 TP_NVRAM_MASK_HKT_THINKPAD = 0x08,
111 TP_NVRAM_MASK_HKT_ZOOM = 0x20,
112 TP_NVRAM_MASK_HKT_DISPLAY = 0x40,
113 TP_NVRAM_MASK_HKT_HIBERNATE = 0x80,
114 TP_NVRAM_MASK_THINKLIGHT = 0x10,
115 TP_NVRAM_MASK_HKT_DISPEXPND = 0x30,
116 TP_NVRAM_MASK_HKT_BRIGHTNESS = 0x20,
117 TP_NVRAM_MASK_LEVEL_BRIGHTNESS = 0x0f,
118 TP_NVRAM_POS_LEVEL_BRIGHTNESS = 0,
119 TP_NVRAM_MASK_MUTE = 0x40,
120 TP_NVRAM_MASK_HKT_VOLUME = 0x80,
121 TP_NVRAM_MASK_LEVEL_VOLUME = 0x0f,
122 TP_NVRAM_POS_LEVEL_VOLUME = 0,
123};
124
5d756db9
HMH		 125/* Misc NVRAM-related */
126enum {
127 TP_NVRAM_LEVEL_VOLUME_MAX = 14,
128};
129
b21a15f6 130/* ACPI HIDs */
e0c7dfe7 131#define TPACPI_ACPI_HKEY_HID "IBM0068"
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 */
183
184 /* User-interface events */
185 TP_HKEY_EV_LID_CLOSE = 0x5001, /* laptop lid closed */
186 TP_HKEY_EV_LID_OPEN = 0x5002, /* laptop lid opened */
187 TP_HKEY_EV_TABLET_TABLET = 0x5009, /* tablet swivel up */
188 TP_HKEY_EV_TABLET_NOTEBOOK = 0x500a, /* tablet swivel down */
189 TP_HKEY_EV_PEN_INSERTED = 0x500b, /* tablet pen inserted */
190 TP_HKEY_EV_PEN_REMOVED = 0x500c, /* tablet pen removed */
191 TP_HKEY_EV_BRGHT_CHANGED = 0x5010, /* backlight control event */
192
193 /* Thermal events */
194 TP_HKEY_EV_ALARM_BAT_HOT = 0x6011, /* battery too hot */
195 TP_HKEY_EV_ALARM_BAT_XHOT = 0x6012, /* battery critically hot */
196 TP_HKEY_EV_ALARM_SENSOR_HOT = 0x6021, /* sensor too hot */
197 TP_HKEY_EV_ALARM_SENSOR_XHOT = 0x6022, /* sensor critically hot */
198 TP_HKEY_EV_THM_TABLE_CHANGED = 0x6030, /* thermal table changed */
199
200 /* Misc */
201 TP_HKEY_EV_RFKILL_CHANGED = 0x7000, /* rfkill switch changed */
202};
203
b21a15f6
HMH		 204/****************************************************************************
205 * Main driver
206 */
207
e0c7dfe7
HMH		 208#define TPACPI_NAME "thinkpad"
209#define TPACPI_DESC "ThinkPad ACPI Extras"
210#define TPACPI_FILE TPACPI_NAME "_acpi"
211#define TPACPI_URL "http://ibm-acpi.sf.net/"
212#define TPACPI_MAIL "ibm-acpi-devel@lists.sourceforge.net"
b21a15f6 213
e0c7dfe7
HMH		 214#define TPACPI_PROC_DIR "ibm"
215#define TPACPI_ACPI_EVENT_PREFIX "ibm"
216#define TPACPI_DRVR_NAME TPACPI_FILE
95e57ab2 217#define TPACPI_DRVR_SHORTNAME "tpacpi"
e0c7dfe7 218#define TPACPI_HWMON_DRVR_NAME TPACPI_NAME "_hwmon"
b21a15f6 219
95e57ab2 220#define TPACPI_NVRAM_KTHREAD_NAME "ktpacpi_nvramd"
e0e3c061 221#define TPACPI_WORKQUEUE_NAME "ktpacpid"
95e57ab2 222
e0c7dfe7 223#define TPACPI_MAX_ACPI_ARGS 3
b21a15f6 224
7ff8d62f 225/* printk headers */
e0c7dfe7 226#define TPACPI_LOG TPACPI_FILE ": "
7ff8d62f
HMH		 227#define TPACPI_EMERG KERN_EMERG TPACPI_LOG
228#define TPACPI_ALERT KERN_ALERT TPACPI_LOG
229#define TPACPI_CRIT KERN_CRIT TPACPI_LOG
230#define TPACPI_ERR KERN_ERR TPACPI_LOG
231#define TPACPI_WARN KERN_WARNING TPACPI_LOG
232#define TPACPI_NOTICE KERN_NOTICE TPACPI_LOG
233#define TPACPI_INFO KERN_INFO TPACPI_LOG
234#define TPACPI_DEBUG KERN_DEBUG TPACPI_LOG
235
236/* Debugging printk groups */
0c78039f 237#define TPACPI_DBG_ALL 0xffff
73a94d86 238#define TPACPI_DBG_DISCLOSETASK 0x8000
0c78039f
HMH		 239#define TPACPI_DBG_INIT 0x0001
240#define TPACPI_DBG_EXIT 0x0002
bee4cd9b 241#define TPACPI_DBG_RFKILL 0x0004
56e2c200 242#define TPACPI_DBG_HKEY 0x0008
74a60c0f 243#define TPACPI_DBG_FAN 0x0010
0e501834 244#define TPACPI_DBG_BRGHT 0x0020
329e4e18 245#define TPACPI_DBG_MIXER 0x0040
0c78039f 246
35ff8b9f
HMH		 247#define onoff(status, bit) ((status) & (1 << (bit)) ? "on" : "off")
248#define enabled(status, bit) ((status) & (1 << (bit)) ? "enabled" : "disabled")
249#define strlencmp(a, b) (strncmp((a), (b), strlen(b)))
0c78039f 250
0c78039f
HMH		 251
252/****************************************************************************
b21a15f6 253 * Driver-wide structs and misc. variables
0c78039f
HMH		 254 */
255
256struct ibm_struct;
257
258struct tp_acpi_drv_struct {
259 const struct acpi_device_id *hid;
260 struct acpi_driver *driver;
261
262 void (*notify) (struct ibm_struct *, u32);
263 acpi_handle *handle;
264 u32 type;
265 struct acpi_device *device;
266};
267
268struct ibm_struct {
269 char *name;
270
887965e6 271 int (*read) (struct seq_file *);
0c78039f
HMH		 272 int (*write) (char *);
273 void (*exit) (void);
274 void (*resume) (void);
083f1760 275 void (*suspend) (pm_message_t state);
90d9d3c7 276 void (*shutdown) (void);
0c78039f
HMH		 277
278 struct list_head all_drivers;
279
280 struct tp_acpi_drv_struct *acpi;
281
282 struct {
283 u8 acpi_driver_registered:1;
284 u8 acpi_notify_installed:1;
285 u8 proc_created:1;
286 u8 init_called:1;
287 u8 experimental:1;
288 } flags;
289};
290
291struct ibm_init_struct {
292 char param[32];
293
294 int (*init) (struct ibm_init_struct *);
b525c06c 295 mode_t base_procfs_mode;
0c78039f
HMH		 296 struct ibm_struct *data;
297};
298
299static struct {
0c78039f
HMH		 300 u32 bluetooth:1;
301 u32 hotkey:1;
302 u32 hotkey_mask:1;
303 u32 hotkey_wlsw:1;
6c231bd5 304 u32 hotkey_tablet:1;
0c78039f
HMH		 305 u32 light:1;
306 u32 light_status:1;
b5972796 307 u32 bright_acpimode:1;
77775838 308 u32 bright_unkfw:1;
0c78039f 309 u32 wan:1;
0045c0aa 310 u32 uwb:1;
0c78039f 311 u32 fan_ctrl_status_undef:1;
d7377247 312 u32 second_fan:1;
60201732 313 u32 beep_needs_two_args:1;
a112ceee 314 u32 mixer_no_level_control:1;
0c78039f
HMH		 315 u32 input_device_registered:1;
316 u32 platform_drv_registered:1;
317 u32 platform_drv_attrs_registered:1;
318 u32 sensors_pdrv_registered:1;
319 u32 sensors_pdrv_attrs_registered:1;
320 u32 sensors_pdev_attrs_registered:1;
321 u32 hotkey_poll_active:1;
322} tp_features;
323
92889022
HMH		 324static struct {
325 u16 hotkey_mask_ff:1;
c7ac6291 326 u16 volume_ctrl_forbidden:1;
92889022
HMH		 327} tp_warned;
328
0c78039f
HMH		 329struct thinkpad_id_data {
330 unsigned int vendor; /* ThinkPad vendor:
331 * PCI_VENDOR_ID_IBM/PCI_VENDOR_ID_LENOVO */
332
333 char *bios_version_str; /* Something like 1ZET51WW (1.03z) */
334 char *ec_version_str; /* Something like 1ZHT51WW-1.04a */
335
050df107 336 u16 bios_model; /* 1Y = 0x5931, 0 = unknown */
0c78039f 337 u16 ec_model;
050df107
HMH		 338 u16 bios_release; /* 1ZETK1WW = 0x314b, 0 = unknown */
339 u16 ec_release;
0c78039f 340
8c74adbc
HMH		 341 char *model_str; /* ThinkPad T43 */
342 char *nummodel_str; /* 9384A9C for a 9384-A9C model */
0c78039f 343};
0c78039f
HMH		 344static struct thinkpad_id_data thinkpad_id;
345
8fef502e
HMH		 346static enum {
347 TPACPI_LIFE_INIT = 0,
348 TPACPI_LIFE_RUNNING,
349 TPACPI_LIFE_EXITING,
350} tpacpi_lifecycle;
351
b21a15f6
HMH		 352static int experimental;
353static u32 dbg_level;
354
e0e3c061
HMH		 355static struct workqueue_struct *tpacpi_wq;
356
75bd3bf2
HMH		 357enum led_status_t {
358 TPACPI_LED_OFF = 0,
359 TPACPI_LED_ON,
360 TPACPI_LED_BLINK,
361};
362
4fa6811b
HMH		 363/* Special LED class that can defer work */
364struct tpacpi_led_classdev {
365 struct led_classdev led_classdev;
366 struct work_struct work;
75bd3bf2 367 enum led_status_t new_state;
af116101 368 unsigned int led;
4fa6811b
HMH		 369};
370
77775838
HMH		 371/* brightness level capabilities */
372static unsigned int bright_maxlvl; /* 0 = unknown */
373
a73f3091
HMH		 374#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
375static int dbg_wlswemul;
376static int tpacpi_wlsw_emulstate;
377static int dbg_bluetoothemul;
378static int tpacpi_bluetooth_emulstate;
379static int dbg_wwanemul;
380static int tpacpi_wwan_emulstate;
0045c0aa
HMH		 381static int dbg_uwbemul;
382static int tpacpi_uwb_emulstate;
a73f3091
HMH		 383#endif
384
385
3dcc2c3b
HMH		 386/*************************************************************************
387 * Debugging helpers
388 */
389
390#define dbg_printk(a_dbg_level, format, arg...) \
391 do { if (dbg_level & (a_dbg_level)) \
392 printk(TPACPI_DEBUG "%s: " format, __func__ , ## arg); \
393 } while (0)
394
395#ifdef CONFIG_THINKPAD_ACPI_DEBUG
396#define vdbg_printk dbg_printk
397static const char *str_supported(int is_supported);
398#else
399#define vdbg_printk(a_dbg_level, format, arg...) \
400 do { } while (0)
401#endif
402
73a94d86
HMH		 403static void tpacpi_log_usertask(const char * const what)
404{
405 printk(TPACPI_DEBUG "%s: access by process with PID %d\n",
406 what, task_tgid_vnr(current));
407}
408
409#define tpacpi_disclose_usertask(what, format, arg...) \
410 do { \
411 if (unlikely( \
412 (dbg_level & TPACPI_DBG_DISCLOSETASK) && \
413 (tpacpi_lifecycle == TPACPI_LIFE_RUNNING))) { \
414 printk(TPACPI_DEBUG "%s: PID %d: " format, \
415 what, task_tgid_vnr(current), ## arg); \
416 } \
417 } while (0)
3dcc2c3b 418
7d95a3d5
HMH		 419/*
420 * Quirk handling helpers
421 *
422 * ThinkPad IDs and versions seen in the field so far
423 * are two-characters from the set [0-9A-Z], i.e. base 36.
424 *
425 * We use values well outside that range as specials.
426 */
427
428#define TPACPI_MATCH_ANY 0xffffU
429#define TPACPI_MATCH_UNKNOWN 0U
430
431/* TPID('1', 'Y') == 0x5931 */
432#define TPID(__c1, __c2) (((__c2) << 8) | (__c1))
433
434#define TPACPI_Q_IBM(__id1, __id2, __quirk) \
435 { .vendor = PCI_VENDOR_ID_IBM, \
436 .bios = TPID(__id1, __id2), \
437 .ec = TPACPI_MATCH_ANY, \
438 .quirks = (__quirk) }
439
440#define TPACPI_Q_LNV(__id1, __id2, __quirk) \
441 { .vendor = PCI_VENDOR_ID_LENOVO, \
442 .bios = TPID(__id1, __id2), \
443 .ec = TPACPI_MATCH_ANY, \
444 .quirks = (__quirk) }
445
a112ceee
HMH		 446#define TPACPI_QEC_LNV(__id1, __id2, __quirk) \
447 { .vendor = PCI_VENDOR_ID_LENOVO, \
448 .bios = TPACPI_MATCH_ANY, \
449 .ec = TPID(__id1, __id2), \
450 .quirks = (__quirk) }
451
7d95a3d5
HMH		 452struct tpacpi_quirk {
453 unsigned int vendor;
454 u16 bios;
455 u16 ec;
456 unsigned long quirks;
457};
458
459/**
460 * tpacpi_check_quirks() - search BIOS/EC version on a list
461 * @qlist: array of &struct tpacpi_quirk
462 * @qlist_size: number of elements in @qlist
463 *
464 * Iterates over a quirks list until one is found that matches the
465 * ThinkPad's vendor, BIOS and EC model.
466 *
467 * Returns 0 if nothing matches, otherwise returns the quirks field of
468 * the matching &struct tpacpi_quirk entry.
469 *
470 * The match criteria is: vendor, ec and bios much match.
471 */
472static unsigned long __init tpacpi_check_quirks(
473 const struct tpacpi_quirk *qlist,
474 unsigned int qlist_size)
475{
476 while (qlist_size) {
477 if ((qlist->vendor == thinkpad_id.vendor ||
478 qlist->vendor == TPACPI_MATCH_ANY) &&
479 (qlist->bios == thinkpad_id.bios_model ||
480 qlist->bios == TPACPI_MATCH_ANY) &&
481 (qlist->ec == thinkpad_id.ec_model ||
482 qlist->ec == TPACPI_MATCH_ANY))
483 return qlist->quirks;
484
485 qlist_size--;
486 qlist++;
487 }
488 return 0;
489}
490
e28393c0
HMH		 491static inline bool __pure __init tpacpi_is_lenovo(void)
492{
493 return thinkpad_id.vendor == PCI_VENDOR_ID_LENOVO;
494}
495
496static inline bool __pure __init tpacpi_is_ibm(void)
497{
498 return thinkpad_id.vendor == PCI_VENDOR_ID_IBM;
499}
7d95a3d5 500
56b6aeb0
HMH		 501/****************************************************************************
502 ****************************************************************************
503 *
504 * ACPI Helpers and device model
505 *
506 ****************************************************************************
507 ****************************************************************************/
508
509/*************************************************************************
510 * ACPI basic handles
511 */
1da177e4 512
94954cc6 513static acpi_handle root_handle;
1da177e4 514
e0c7dfe7 515#define TPACPI_HANDLE(object, parent, paths...) \
1da177e4
LT		 516 static acpi_handle object##_handle; \
517 static acpi_handle *object##_parent = &parent##_handle; \
78f81cc4 518 static char *object##_path; \
1da177e4
LT		 519 static char *object##_paths[] = { paths }
520
e0c7dfe7 521TPACPI_HANDLE(ec, root, "\\_SB.PCI0.ISA.EC0", /* 240, 240x */
78f81cc4
BD		 522 "\\_SB.PCI.ISA.EC", /* 570 */
523 "\\_SB.PCI0.ISA0.EC0", /* 600e/x, 770e, 770x */
524 "\\_SB.PCI0.ISA.EC", /* A21e, A2xm/p, T20-22, X20-21 */
525 "\\_SB.PCI0.AD4S.EC0", /* i1400, R30 */
526 "\\_SB.PCI0.ICH3.EC0", /* R31 */
a318930d 527 "\\_SB.PCI0.LPC0.EC", /* X100e and a few others */
78f81cc4 528 "\\_SB.PCI0.LPC.EC", /* all others */
56b6aeb0 529 );
78f81cc4 530
e0c7dfe7
HMH		 531TPACPI_HANDLE(ecrd, ec, "ECRD"); /* 570 */
532TPACPI_HANDLE(ecwr, ec, "ECWR"); /* 570 */
78f81cc4 533
35ff8b9f
HMH		 534TPACPI_HANDLE(cmos, root, "\\UCMS", /* R50, R50e, R50p, R51, */
535 /* T4x, X31, X40 */
78f81cc4
BD		 536 "\\CMOS", /* A3x, G4x, R32, T23, T30, X22-24, X30 */
537 "\\CMS", /* R40, R40e */
56b6aeb0 538 ); /* all others */
78f81cc4 539
e0c7dfe7 540TPACPI_HANDLE(hkey, ec, "\\_SB.HKEY", /* 600e/x, 770e, 770x */
78f81cc4
BD		 541 "^HKEY", /* R30, R31 */
542 "HKEY", /* all others */
56b6aeb0 543 ); /* 570 */
78f81cc4 544
d7c1d17d
HMH		 545TPACPI_HANDLE(vid, root, "\\_SB.PCI.AGP.VGA", /* 570 */
546 "\\_SB.PCI0.AGP0.VID0", /* 600e/x, 770x */
547 "\\_SB.PCI0.VID0", /* 770e */
548 "\\_SB.PCI0.VID", /* A21e, G4x, R50e, X30, X40 */
a318930d 549 "\\_SB.PCI0.AGP.VGA", /* X100e and a few others */
d7c1d17d
HMH		 550 "\\_SB.PCI0.AGP.VID", /* all others */
551 ); /* R30, R31 */
552
78f81cc4 553
56b6aeb0
HMH		 554/*************************************************************************
555 * ACPI helpers
a8b7a662
HMH		 556 */
557
1da177e4
LT		 558static int acpi_evalf(acpi_handle handle,
559 void *res, char *method, char *fmt, ...)
560{
561 char *fmt0 = fmt;
78f81cc4 562 struct acpi_object_list params;
e0c7dfe7 563 union acpi_object in_objs[TPACPI_MAX_ACPI_ARGS];
78f81cc4
BD		 564 struct acpi_buffer result, *resultp;
565 union acpi_object out_obj;
566 acpi_status status;
567 va_list ap;
568 char res_type;
569 int success;
570 int quiet;
1da177e4
LT		 571
572 if (!*fmt) {
e0c7dfe7 573 printk(TPACPI_ERR "acpi_evalf() called with empty format\n");
1da177e4
LT		 574 return 0;
575 }
576
577 if (*fmt == 'q') {
578 quiet = 1;
579 fmt++;
580 } else
581 quiet = 0;
582
583 res_type = *(fmt++);
584
585 params.count = 0;
586 params.pointer = &in_objs[0];
587
588 va_start(ap, fmt);
589 while (*fmt) {
590 char c = *(fmt++);
591 switch (c) {
592 case 'd': /* int */
593 in_objs[params.count].integer.value = va_arg(ap, int);
594 in_objs[params.count++].type = ACPI_TYPE_INTEGER;
595 break;
78f81cc4 596 /* add more types as needed */
1da177e4 597 default:
e0c7dfe7 598 printk(TPACPI_ERR "acpi_evalf() called "
1da177e4
LT		 599 "with invalid format character '%c'\n", c);
600 return 0;
601 }
602 }
603 va_end(ap);
604
78f81cc4
BD		 605 if (res_type != 'v') {
606 result.length = sizeof(out_obj);
607 result.pointer = &out_obj;
608 resultp = &result;
609 } else
610 resultp = NULL;
1da177e4 611
78f81cc4 612 status = acpi_evaluate_object(handle, method, &params, resultp);
1da177e4
LT		 613
614 switch (res_type) {
78f81cc4 615 case 'd': /* int */
1da177e4
LT		 616 if (res)
617 *(int *)res = out_obj.integer.value;
618 success = status == AE_OK && out_obj.type == ACPI_TYPE_INTEGER;
619 break;
78f81cc4 620 case 'v': /* void */
1da177e4
LT		 621 success = status == AE_OK;
622 break;
78f81cc4 623 /* add more types as needed */
1da177e4 624 default:
e0c7dfe7 625 printk(TPACPI_ERR "acpi_evalf() called "
1da177e4
LT		 626 "with invalid format character '%c'\n", res_type);
627 return 0;
628 }
629
56b6aeb0 630 if (!success && !quiet)
e0c7dfe7 631 printk(TPACPI_ERR "acpi_evalf(%s, %s, ...) failed: %d\n",
56b6aeb0
HMH		 632 method, fmt0, status);
633
634 return success;
635}
636
35ff8b9f 637static int acpi_ec_read(int i, u8 *p)
56b6aeb0
HMH		 638{
639 int v;
640
641 if (ecrd_handle) {
642 if (!acpi_evalf(ecrd_handle, &v, NULL, "dd", i))
643 return 0;
644 *p = v;
645 } else {
646 if (ec_read(i, p) < 0)
647 return 0;
648 }
649
650 return 1;
651}
652
653static int acpi_ec_write(int i, u8 v)
654{
655 if (ecwr_handle) {
656 if (!acpi_evalf(ecwr_handle, NULL, NULL, "vdd", i, v))
657 return 0;
658 } else {
659 if (ec_write(i, v) < 0)
660 return 0;
661 }
662
663 return 1;
664}
665
c9bea99c
HMH		 666static int issue_thinkpad_cmos_command(int cmos_cmd)
667{
668 if (!cmos_handle)
669 return -ENXIO;
670
671 if (!acpi_evalf(cmos_handle, NULL, NULL, "vd", cmos_cmd))
672 return -EIO;
673
674 return 0;
675}
676
56b6aeb0
HMH		 677/*************************************************************************
678 * ACPI device model
679 */
680
35ff8b9f
HMH		 681#define TPACPI_ACPIHANDLE_INIT(object) \
682 drv_acpi_handle_init(#object, &object##_handle, *object##_parent, \
f74a27d4
HMH		 683 object##_paths, ARRAY_SIZE(object##_paths), &object##_path)
684
8d376cd6 685static void drv_acpi_handle_init(char *name,
5fba344c
HMH		 686 acpi_handle *handle, acpi_handle parent,
687 char **paths, int num_paths, char **path)
56b6aeb0
HMH		 688{
689 int i;
690 acpi_status status;
691
5ae930e6
HMH		 692 vdbg_printk(TPACPI_DBG_INIT, "trying to locate ACPI handle for %s\n",
693 name);
694
56b6aeb0
HMH		 695 for (i = 0; i < num_paths; i++) {
696 status = acpi_get_handle(parent, paths[i], handle);
697 if (ACPI_SUCCESS(status)) {
698 *path = paths[i];
5ae930e6
HMH		 699 dbg_printk(TPACPI_DBG_INIT,
700 "Found ACPI handle %s for %s\n",
701 *path, name);
56b6aeb0
HMH		 702 return;
703 }
704 }
705
5ae930e6
HMH		 706 vdbg_printk(TPACPI_DBG_INIT, "ACPI handle for %s not found\n",
707 name);
56b6aeb0
HMH		 708 *handle = NULL;
709}
710
8d376cd6 711static void dispatch_acpi_notify(acpi_handle handle, u32 event, void *data)
56b6aeb0
HMH		 712{
713 struct ibm_struct *ibm = data;
714
8fef502e
HMH		 715 if (tpacpi_lifecycle != TPACPI_LIFE_RUNNING)
716 return;
717
8d376cd6 718 if (!ibm || !ibm->acpi || !ibm->acpi->notify)
56b6aeb0
HMH		 719 return;
720
8d376cd6 721 ibm->acpi->notify(ibm, event);
56b6aeb0
HMH		 722}
723
8d376cd6 724static int __init setup_acpi_notify(struct ibm_struct *ibm)
56b6aeb0
HMH		 725{
726 acpi_status status;
5ae930e6 727 int rc;
56b6aeb0 728
8d376cd6
HMH		 729 BUG_ON(!ibm->acpi);
730
731 if (!*ibm->acpi->handle)
56b6aeb0
HMH		 732 return 0;
733
5ae930e6 734 vdbg_printk(TPACPI_DBG_INIT,
fe08bc4b
HMH		 735 "setting up ACPI notify for %s\n", ibm->name);
736
5ae930e6
HMH		 737 rc = acpi_bus_get_device(*ibm->acpi->handle, &ibm->acpi->device);
738 if (rc < 0) {
e0c7dfe7 739 printk(TPACPI_ERR "acpi_bus_get_device(%s) failed: %d\n",
5ae930e6 740 ibm->name, rc);
56b6aeb0
HMH		 741 return -ENODEV;
742 }
743
db89b4f0 744 ibm->acpi->device->driver_data = ibm;
8d376cd6 745 sprintf(acpi_device_class(ibm->acpi->device), "%s/%s",
e0c7dfe7 746 TPACPI_ACPI_EVENT_PREFIX,
643f12db 747 ibm->name);
56b6aeb0 748
8d376cd6
HMH		 749 status = acpi_install_notify_handler(*ibm->acpi->handle,
750 ibm->acpi->type, dispatch_acpi_notify, ibm);
56b6aeb0
HMH		 751 if (ACPI_FAILURE(status)) {
752 if (status == AE_ALREADY_EXISTS) {
35ff8b9f
HMH		 753 printk(TPACPI_NOTICE
754 "another device driver is already "
755 "handling %s events\n", ibm->name);
56b6aeb0 756 } else {
35ff8b9f
HMH		 757 printk(TPACPI_ERR
758 "acpi_install_notify_handler(%s) failed: %d\n",
759 ibm->name, status);
56b6aeb0
HMH		 760 }
761 return -ENODEV;
762 }
8d376cd6 763 ibm->flags.acpi_notify_installed = 1;
56b6aeb0
HMH		 764 return 0;
765}
766
8d376cd6 767static int __init tpacpi_device_add(struct acpi_device *device)
56b6aeb0
HMH		 768{
769 return 0;
770}
771
6700121b 772static int __init register_tpacpi_subdriver(struct ibm_struct *ibm)
56b6aeb0 773{
5ae930e6 774 int rc;
56b6aeb0 775
fe08bc4b
HMH		 776 dbg_printk(TPACPI_DBG_INIT,
777 "registering %s as an ACPI driver\n", ibm->name);
778
8d376cd6
HMH		 779 BUG_ON(!ibm->acpi);
780
781 ibm->acpi->driver = kzalloc(sizeof(struct acpi_driver), GFP_KERNEL);
782 if (!ibm->acpi->driver) {
4f778b92
MK		 783 printk(TPACPI_ERR
784 "failed to allocate memory for ibm->acpi->driver\n");
5fba344c 785 return -ENOMEM;
56b6aeb0
HMH		 786 }
787
e0c7dfe7 788 sprintf(ibm->acpi->driver->name, "%s_%s", TPACPI_NAME, ibm->name);
8d376cd6 789 ibm->acpi->driver->ids = ibm->acpi->hid;
1ba90e3a 790
8d376cd6 791 ibm->acpi->driver->ops.add = &tpacpi_device_add;
56b6aeb0 792
5ae930e6
HMH		 793 rc = acpi_bus_register_driver(ibm->acpi->driver);
794 if (rc < 0) {
e0c7dfe7 795 printk(TPACPI_ERR "acpi_bus_register_driver(%s) failed: %d\n",
1ba90e3a 796 ibm->name, rc);
8d376cd6
HMH		 797 kfree(ibm->acpi->driver);
798 ibm->acpi->driver = NULL;
5ae930e6 799 } else if (!rc)
8d376cd6 800 ibm->flags.acpi_driver_registered = 1;
56b6aeb0 801
5ae930e6 802 return rc;
56b6aeb0
HMH		 803}
804
805
806/****************************************************************************
807 ****************************************************************************
808 *
809 * Procfs Helpers
810 *
811 ****************************************************************************
812 ****************************************************************************/
813
887965e6 814static int dispatch_proc_show(struct seq_file *m, void *v)
56b6aeb0 815{
887965e6 816 struct ibm_struct *ibm = m->private;
56b6aeb0
HMH		 817
818 if (!ibm || !ibm->read)
819 return -EINVAL;
887965e6
AD		 820 return ibm->read(m);
821}
56b6aeb0 822
887965e6
AD		 823static int dispatch_proc_open(struct inode *inode, struct file *file)
824{
825 return single_open(file, dispatch_proc_show, PDE(inode)->data);
56b6aeb0
HMH		 826}
827
887965e6 828static ssize_t dispatch_proc_write(struct file *file,
35ff8b9f 829 const char __user *userbuf,
887965e6 830 size_t count, loff_t *pos)
56b6aeb0 831{
887965e6 832 struct ibm_struct *ibm = PDE(file->f_path.dentry->d_inode)->data;
56b6aeb0
HMH		 833 char *kernbuf;
834 int ret;
835
836 if (!ibm || !ibm->write)
837 return -EINVAL;
5b05d469
MB		 838 if (count > PAGE_SIZE - 2)
839 return -EINVAL;
56b6aeb0
HMH		 840
841 kernbuf = kmalloc(count + 2, GFP_KERNEL);
842 if (!kernbuf)
843 return -ENOMEM;
1da177e4 844
56b6aeb0
HMH		 845 if (copy_from_user(kernbuf, userbuf, count)) {
846 kfree(kernbuf);
847 return -EFAULT;
848 }
1da177e4 849
56b6aeb0
HMH		 850 kernbuf[count] = 0;
851 strcat(kernbuf, ",");
852 ret = ibm->write(kernbuf);
853 if (ret == 0)
854 ret = count;
1da177e4 855
56b6aeb0
HMH		 856 kfree(kernbuf);
857
858 return ret;
1da177e4
LT		 859}
860
887965e6
AD		 861static const struct file_operations dispatch_proc_fops = {
862 .owner = THIS_MODULE,
863 .open = dispatch_proc_open,
864 .read = seq_read,
865 .llseek = seq_lseek,
866 .release = single_release,
867 .write = dispatch_proc_write,
868};
869
1da177e4
LT		 870static char *next_cmd(char **cmds)
871{
872 char *start = *cmds;
873 char *end;
874
875 while ((end = strchr(start, ',')) && end == start)
876 start = end + 1;
877
878 if (!end)
879 return NULL;
880
881 *end = 0;
882 *cmds = end + 1;
883 return start;
884}
885
56b6aeb0 886
54ae1501
HMH		 887/****************************************************************************
888 ****************************************************************************
889 *
7f5d1cd6 890 * Device model: input, hwmon and platform
54ae1501
HMH		 891 *
892 ****************************************************************************
893 ****************************************************************************/
894
94954cc6 895static struct platform_device *tpacpi_pdev;
7fd40029 896static struct platform_device *tpacpi_sensors_pdev;
1beeffe4 897static struct device *tpacpi_hwmon;
7f5d1cd6 898static struct input_dev *tpacpi_inputdev;
8523ed6f 899static struct mutex tpacpi_inputdev_send_mutex;
b21a15f6 900static LIST_HEAD(tpacpi_all_drivers);
e295e850 901
083f1760
HMH		 902static int tpacpi_suspend_handler(struct platform_device *pdev,
903 pm_message_t state)
904{
905 struct ibm_struct *ibm, *itmp;
906
907 list_for_each_entry_safe(ibm, itmp,
908 &tpacpi_all_drivers,
909 all_drivers) {
910 if (ibm->suspend)
911 (ibm->suspend)(state);
912 }
913
914 return 0;
915}
916
e295e850
HMH		 917static int tpacpi_resume_handler(struct platform_device *pdev)
918{
919 struct ibm_struct *ibm, *itmp;
920
921 list_for_each_entry_safe(ibm, itmp,
922 &tpacpi_all_drivers,
923 all_drivers) {
924 if (ibm->resume)
925 (ibm->resume)();
926 }
927
928 return 0;
929}
930
90d9d3c7
HMH		 931static void tpacpi_shutdown_handler(struct platform_device *pdev)
932{
933 struct ibm_struct *ibm, *itmp;
934
935 list_for_each_entry_safe(ibm, itmp,
936 &tpacpi_all_drivers,
937 all_drivers) {
938 if (ibm->shutdown)
939 (ibm->shutdown)();
940 }
941}
942
54ae1501
HMH		 943static struct platform_driver tpacpi_pdriver = {
944 .driver = {
e0c7dfe7 945 .name = TPACPI_DRVR_NAME,
54ae1501
HMH		 946 .owner = THIS_MODULE,
947 },
083f1760 948 .suspend = tpacpi_suspend_handler,
e295e850 949 .resume = tpacpi_resume_handler,
90d9d3c7 950 .shutdown = tpacpi_shutdown_handler,
54ae1501
HMH		 951};
952
7fd40029
HMH		 953static struct platform_driver tpacpi_hwmon_pdriver = {
954 .driver = {
e0c7dfe7 955 .name = TPACPI_HWMON_DRVR_NAME,
7fd40029
HMH		 956 .owner = THIS_MODULE,
957 },
958};
54ae1501 959
176750d6 960/*************************************************************************
b21a15f6 961 * sysfs support helpers
176750d6
HMH		 962 */
963
b21a15f6
HMH		 964struct attribute_set {
965 unsigned int members, max_members;
966 struct attribute_group group;
176750d6
HMH		 967};
968
7252374a
HMH		 969struct attribute_set_obj {
970 struct attribute_set s;
971 struct attribute *a;
972} __attribute__((packed));
973
974static struct attribute_set *create_attr_set(unsigned int max_members,
35ff8b9f 975 const char *name)
7252374a
HMH		 976{
977 struct attribute_set_obj *sobj;
978
979 if (max_members == 0)
980 return NULL;
981
982 /* Allocates space for implicit NULL at the end too */
983 sobj = kzalloc(sizeof(struct attribute_set_obj) +
984 max_members * sizeof(struct attribute *),
985 GFP_KERNEL);
986 if (!sobj)
987 return NULL;
988 sobj->s.max_members = max_members;
989 sobj->s.group.attrs = &sobj->a;
990 sobj->s.group.name = name;
991
992 return &sobj->s;
993}
994
f74a27d4
HMH		 995#define destroy_attr_set(_set) \
996 kfree(_set);
997
7252374a 998/* not multi-threaded safe, use it in a single thread per set */
35ff8b9f 999static int add_to_attr_set(struct attribute_set *s, struct attribute *attr)
7252374a
HMH		 1000{
1001 if (!s || !attr)
1002 return -EINVAL;
1003
1004 if (s->members >= s->max_members)
1005 return -ENOMEM;
1006
1007 s->group.attrs[s->members] = attr;
1008 s->members++;
1009
1010 return 0;
1011}
1012
35ff8b9f 1013static int add_many_to_attr_set(struct attribute_set *s,
7252374a
HMH		 1014 struct attribute **attr,
1015 unsigned int count)
1016{
1017 int i, res;
1018
1019 for (i = 0; i < count; i++) {
1020 res = add_to_attr_set(s, attr[i]);
1021 if (res)
1022 return res;
1023 }
1024
1025 return 0;
1026}
1027
35ff8b9f 1028static void delete_attr_set(struct attribute_set *s, struct kobject *kobj)
7252374a
HMH		 1029{
1030 sysfs_remove_group(kobj, &s->group);
1031 destroy_attr_set(s);
1032}
1033
f74a27d4
HMH		 1034#define register_attr_set_with_sysfs(_attr_set, _kobj) \
1035 sysfs_create_group(_kobj, &_attr_set->group)
1036
7252374a
HMH		 1037static int parse_strtoul(const char *buf,
1038 unsigned long max, unsigned long *value)
1039{
1040 char *endp;
1041
e7d2860b
AGR		 1042 *value = simple_strtoul(skip_spaces(buf), &endp, 0);
1043 endp = skip_spaces(endp);
7252374a
HMH		 1044 if (*endp || *value > max)
1045 return -EINVAL;
1046
1047 return 0;
1048}
1049
d64c81c4
HMH		 1050static void tpacpi_disable_brightness_delay(void)
1051{
1052 if (acpi_evalf(hkey_handle, NULL, "PWMS", "qvd", 0))
1053 printk(TPACPI_NOTICE
1054 "ACPI backlight control delay disabled\n");
1055}
1056
19d337df
JB		 1057static void printk_deprecated_attribute(const char * const what,
1058 const char * const details)
1059{
1060 tpacpi_log_usertask("deprecated sysfs attribute");
1061 printk(TPACPI_WARN "WARNING: sysfs attribute %s is deprecated and "
1062 "will be removed. %s\n",
1063 what, details);
1064}
1065
1066/*************************************************************************
1067 * rfkill and radio control support helpers
1068 */
1069
1070/*
1071 * ThinkPad-ACPI firmware handling model:
1072 *
1073 * WLSW (master wireless switch) is event-driven, and is common to all
1074 * firmware-controlled radios. It cannot be controlled, just monitored,
1075 * as expected. It overrides all radio state in firmware
1076 *
1077 * The kernel, a masked-off hotkey, and WLSW can change the radio state
1078 * (TODO: verify how WLSW interacts with the returned radio state).
1079 *
1080 * The only time there are shadow radio state changes, is when
1081 * masked-off hotkeys are used.
1082 */
1083
1084/*
1085 * Internal driver API for radio state:
1086 *
1087 * int: < 0 = error, otherwise enum tpacpi_rfkill_state
1088 * bool: true means radio blocked (off)
1089 */
1090enum tpacpi_rfkill_state {
1091 TPACPI_RFK_RADIO_OFF = 0,
1092 TPACPI_RFK_RADIO_ON
1093};
1094
1095/* rfkill switches */
1096enum tpacpi_rfk_id {
1097 TPACPI_RFK_BLUETOOTH_SW_ID = 0,
1098 TPACPI_RFK_WWAN_SW_ID,
1099 TPACPI_RFK_UWB_SW_ID,
1100 TPACPI_RFK_SW_MAX
1101};
1102
1103static const char *tpacpi_rfkill_names[] = {
1104 [TPACPI_RFK_BLUETOOTH_SW_ID] = "bluetooth",
1105 [TPACPI_RFK_WWAN_SW_ID] = "wwan",
1106 [TPACPI_RFK_UWB_SW_ID] = "uwb",
1107 [TPACPI_RFK_SW_MAX] = NULL
1108};
1109
1110/* ThinkPad-ACPI rfkill subdriver */
1111struct tpacpi_rfk {
1112 struct rfkill *rfkill;
1113 enum tpacpi_rfk_id id;
1114 const struct tpacpi_rfk_ops *ops;
1115};
1116
1117struct tpacpi_rfk_ops {
1118 /* firmware interface */
1119 int (*get_status)(void);
1120 int (*set_status)(const enum tpacpi_rfkill_state);
1121};
1122
1123static struct tpacpi_rfk *tpacpi_rfkill_switches[TPACPI_RFK_SW_MAX];
1124
1125/* Query FW and update rfkill sw state for a given rfkill switch */
1126static int tpacpi_rfk_update_swstate(const struct tpacpi_rfk *tp_rfk)
1127{
1128 int status;
1129
1130 if (!tp_rfk)
1131 return -ENODEV;
1132
1133 status = (tp_rfk->ops->get_status)();
1134 if (status < 0)
1135 return status;
1136
1137 rfkill_set_sw_state(tp_rfk->rfkill,
1138 (status == TPACPI_RFK_RADIO_OFF));
1139
1140 return status;
1141}
1142
1143/* Query FW and update rfkill sw state for all rfkill switches */
1144static void tpacpi_rfk_update_swstate_all(void)
1145{
1146 unsigned int i;
1147
1148 for (i = 0; i < TPACPI_RFK_SW_MAX; i++)
1149 tpacpi_rfk_update_swstate(tpacpi_rfkill_switches[i]);
1150}
1151
1152/*
1153 * Sync the HW-blocking state of all rfkill switches,
1154 * do notice it causes the rfkill core to schedule uevents
1155 */
1156static void tpacpi_rfk_update_hwblock_state(bool blocked)
1157{
1158 unsigned int i;
1159 struct tpacpi_rfk *tp_rfk;
1160
1161 for (i = 0; i < TPACPI_RFK_SW_MAX; i++) {
1162 tp_rfk = tpacpi_rfkill_switches[i];
1163 if (tp_rfk) {
1164 if (rfkill_set_hw_state(tp_rfk->rfkill,
1165 blocked)) {
1166 /* ignore -- we track sw block */
1167 }
1168 }
1169 }
1170}
1171
1172/* Call to get the WLSW state from the firmware */
1173static int hotkey_get_wlsw(void);
1174
1175/* Call to query WLSW state and update all rfkill switches */
1176static bool tpacpi_rfk_check_hwblock_state(void)
1177{
1178 int res = hotkey_get_wlsw();
1179 int hw_blocked;
1180
1181 /* When unknown or unsupported, we have to assume it is unblocked */
1182 if (res < 0)
1183 return false;
1184
1185 hw_blocked = (res == TPACPI_RFK_RADIO_OFF);
1186 tpacpi_rfk_update_hwblock_state(hw_blocked);
1187
1188 return hw_blocked;
1189}
1190
1191static int tpacpi_rfk_hook_set_block(void *data, bool blocked)
1192{
1193 struct tpacpi_rfk *tp_rfk = data;
1194 int res;
1195
1196 dbg_printk(TPACPI_DBG_RFKILL,
1197 "request to change radio state to %s\n",
1198 blocked ? "blocked" : "unblocked");
1199
1200 /* try to set radio state */
1201 res = (tp_rfk->ops->set_status)(blocked ?
1202 TPACPI_RFK_RADIO_OFF : TPACPI_RFK_RADIO_ON);
1203
1204 /* and update the rfkill core with whatever the FW really did */
1205 tpacpi_rfk_update_swstate(tp_rfk);
1206
1207 return (res < 0) ? res : 0;
1208}
1209
1210static const struct rfkill_ops tpacpi_rfk_rfkill_ops = {
1211 .set_block = tpacpi_rfk_hook_set_block,
1212};
1213
1214static int __init tpacpi_new_rfkill(const enum tpacpi_rfk_id id,
1215 const struct tpacpi_rfk_ops *tp_rfkops,
0e74dc26
HMH		 1216 const enum rfkill_type rfktype,
1217 const char *name,
19d337df 1218 const bool set_default)
0e74dc26 1219{
19d337df 1220 struct tpacpi_rfk *atp_rfk;
0e74dc26 1221 int res;
06d5caf4 1222 bool sw_state = false;
5451a923 1223 bool hw_state;
06d5caf4 1224 int sw_status;
90d9d3c7 1225
19d337df
JB		 1226 BUG_ON(id >= TPACPI_RFK_SW_MAX || tpacpi_rfkill_switches[id]);
1227
19d337df
JB		 1228 atp_rfk = kzalloc(sizeof(struct tpacpi_rfk), GFP_KERNEL);
1229 if (atp_rfk)
1230 atp_rfk->rfkill = rfkill_alloc(name,
1231 &tpacpi_pdev->dev,
1232 rfktype,
1233 &tpacpi_rfk_rfkill_ops,
1234 atp_rfk);
1235 if (!atp_rfk || !atp_rfk->rfkill) {
0e74dc26
HMH		 1236 printk(TPACPI_ERR
1237 "failed to allocate memory for rfkill class\n");
19d337df 1238 kfree(atp_rfk);
0e74dc26
HMH		 1239 return -ENOMEM;
1240 }
1241
19d337df
JB		 1242 atp_rfk->id = id;
1243 atp_rfk->ops = tp_rfkops;
0e74dc26 1244
06d5caf4
AJ		 1245 sw_status = (tp_rfkops->get_status)();
1246 if (sw_status < 0) {
b3fa1329
AJ		 1247 printk(TPACPI_ERR
1248 "failed to read initial state for %s, error %d\n",
06d5caf4 1249 name, sw_status);
b3fa1329 1250 } else {
06d5caf4 1251 sw_state = (sw_status == TPACPI_RFK_RADIO_OFF);
b3fa1329
AJ		 1252 if (set_default) {
1253 /* try to keep the initial state, since we ask the
1254 * firmware to preserve it across S5 in NVRAM */
06d5caf4 1255 rfkill_init_sw_state(atp_rfk->rfkill, sw_state);
b3fa1329
AJ		 1256 }
1257 }
5451a923
HMH		 1258 hw_state = tpacpi_rfk_check_hwblock_state();
1259 rfkill_set_hw_state(atp_rfk->rfkill, hw_state);
19d337df
JB		 1260
1261 res = rfkill_register(atp_rfk->rfkill);
0e74dc26
HMH		 1262 if (res < 0) {
1263 printk(TPACPI_ERR
1264 "failed to register %s rfkill switch: %d\n",
1265 name, res);
19d337df
JB		 1266 rfkill_destroy(atp_rfk->rfkill);
1267 kfree(atp_rfk);
0e74dc26
HMH		 1268 return res;
1269 }
1270
19d337df 1271 tpacpi_rfkill_switches[id] = atp_rfk;
5451a923
HMH		 1272
1273 printk(TPACPI_INFO "rfkill switch %s: radio is %sblocked\n",
1274 name, (sw_state || hw_state) ? "" : "un");
0e74dc26
HMH		 1275 return 0;
1276}
1277
19d337df 1278static void tpacpi_destroy_rfkill(const enum tpacpi_rfk_id id)
73a94d86 1279{
19d337df
JB		 1280 struct tpacpi_rfk *tp_rfk;
1281
1282 BUG_ON(id >= TPACPI_RFK_SW_MAX);
1283
1284 tp_rfk = tpacpi_rfkill_switches[id];
1285 if (tp_rfk) {
1286 rfkill_unregister(tp_rfk->rfkill);
5f0dadb4 1287 rfkill_destroy(tp_rfk->rfkill);
19d337df
JB		 1288 tpacpi_rfkill_switches[id] = NULL;
1289 kfree(tp_rfk);
1290 }
73a94d86
HMH		 1291}
1292
1293static void printk_deprecated_rfkill_attribute(const char * const what)
1294{
1295 printk_deprecated_attribute(what,
1296 "Please switch to generic rfkill before year 2010");
1297}
1298
19d337df
JB		 1299/* sysfs <radio> enable ------------------------------------------------ */
1300static ssize_t tpacpi_rfk_sysfs_enable_show(const enum tpacpi_rfk_id id,
1301 struct device_attribute *attr,
1302 char *buf)
1303{
1304 int status;
1305
1306 printk_deprecated_rfkill_attribute(attr->attr.name);
1307
1308 /* This is in the ABI... */
1309 if (tpacpi_rfk_check_hwblock_state()) {
1310 status = TPACPI_RFK_RADIO_OFF;
1311 } else {
1312 status = tpacpi_rfk_update_swstate(tpacpi_rfkill_switches[id]);
1313 if (status < 0)
1314 return status;
1315 }
1316
1317 return snprintf(buf, PAGE_SIZE, "%d\n",
1318 (status == TPACPI_RFK_RADIO_ON) ? 1 : 0);
1319}
1320
1321static ssize_t tpacpi_rfk_sysfs_enable_store(const enum tpacpi_rfk_id id,
1322 struct device_attribute *attr,
1323 const char *buf, size_t count)
1324{
1325 unsigned long t;
1326 int res;
1327
1328 printk_deprecated_rfkill_attribute(attr->attr.name);
1329
1330 if (parse_strtoul(buf, 1, &t))
1331 return -EINVAL;
1332
1333 tpacpi_disclose_usertask(attr->attr.name, "set to %ld\n", t);
1334
1335 /* This is in the ABI... */
1336 if (tpacpi_rfk_check_hwblock_state() && !!t)
1337 return -EPERM;
1338
1339 res = tpacpi_rfkill_switches[id]->ops->set_status((!!t) ?
1340 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF);
1341 tpacpi_rfk_update_swstate(tpacpi_rfkill_switches[id]);
1342
1343 return (res < 0) ? res : count;
1344}
1345
1346/* procfs -------------------------------------------------------------- */
887965e6 1347static int tpacpi_rfk_procfs_read(const enum tpacpi_rfk_id id, struct seq_file *m)
19d337df 1348{
19d337df 1349 if (id >= TPACPI_RFK_SW_MAX)
887965e6 1350 seq_printf(m, "status:\t\tnot supported\n");
19d337df
JB		 1351 else {
1352 int status;
1353
1354 /* This is in the ABI... */
1355 if (tpacpi_rfk_check_hwblock_state()) {
1356 status = TPACPI_RFK_RADIO_OFF;
1357 } else {
1358 status = tpacpi_rfk_update_swstate(
1359 tpacpi_rfkill_switches[id]);
1360 if (status < 0)
1361 return status;
1362 }
1363
887965e6 1364 seq_printf(m, "status:\t\t%s\n",
19d337df
JB		 1365 (status == TPACPI_RFK_RADIO_ON) ?
1366 "enabled" : "disabled");
887965e6 1367 seq_printf(m, "commands:\tenable, disable\n");
19d337df
JB		 1368 }
1369
887965e6 1370 return 0;
19d337df
JB		 1371}
1372
1373static int tpacpi_rfk_procfs_write(const enum tpacpi_rfk_id id, char *buf)
1374{
1375 char *cmd;
1376 int status = -1;
1377 int res = 0;
1378
1379 if (id >= TPACPI_RFK_SW_MAX)
1380 return -ENODEV;
1381
1382 while ((cmd = next_cmd(&buf))) {
1383 if (strlencmp(cmd, "enable") == 0)
1384 status = TPACPI_RFK_RADIO_ON;
1385 else if (strlencmp(cmd, "disable") == 0)
1386 status = TPACPI_RFK_RADIO_OFF;
1387 else
1388 return -EINVAL;
1389 }
1390
1391 if (status != -1) {
1392 tpacpi_disclose_usertask("procfs", "attempt to %s %s\n",
1393 (status == TPACPI_RFK_RADIO_ON) ?
1394 "enable" : "disable",
1395 tpacpi_rfkill_names[id]);
1396 res = (tpacpi_rfkill_switches[id]->ops->set_status)(status);
1397 tpacpi_rfk_update_swstate(tpacpi_rfkill_switches[id]);
1398 }
1399
1400 return res;
1401}
1402
56b6aeb0 1403/*************************************************************************
b21a15f6 1404 * thinkpad-acpi driver attributes
56b6aeb0
HMH		 1405 */
1406
b21a15f6
HMH		 1407/* interface_version --------------------------------------------------- */
1408static ssize_t tpacpi_driver_interface_version_show(
1409 struct device_driver *drv,
1410 char *buf)
1da177e4 1411{
b21a15f6
HMH		 1412 return snprintf(buf, PAGE_SIZE, "0x%08x\n", TPACPI_SYSFS_VERSION);
1413}
1414
1415static DRIVER_ATTR(interface_version, S_IRUGO,
1416 tpacpi_driver_interface_version_show, NULL);
1417
1418/* debug_level --------------------------------------------------------- */
1419static ssize_t tpacpi_driver_debug_show(struct device_driver *drv,
1420 char *buf)
1421{
1422 return snprintf(buf, PAGE_SIZE, "0x%04x\n", dbg_level);
1423}
1424
1425static ssize_t tpacpi_driver_debug_store(struct device_driver *drv,
1426 const char *buf, size_t count)
1427{
1428 unsigned long t;
1429
1430 if (parse_strtoul(buf, 0xffff, &t))
1431 return -EINVAL;
1432
1433 dbg_level = t;
1434
1435 return count;
1436}
1437
1438static DRIVER_ATTR(debug_level, S_IWUSR | S_IRUGO,
1439 tpacpi_driver_debug_show, tpacpi_driver_debug_store);
1440
1441/* version ------------------------------------------------------------- */
1442static ssize_t tpacpi_driver_version_show(struct device_driver *drv,
1443 char *buf)
1444{
35ff8b9f
HMH		 1445 return snprintf(buf, PAGE_SIZE, "%s v%s\n",
1446 TPACPI_DESC, TPACPI_VERSION);
b21a15f6
HMH		 1447}
1448
1449static DRIVER_ATTR(version, S_IRUGO,
1450 tpacpi_driver_version_show, NULL);
1451
1452/* --------------------------------------------------------------------- */
1453
a73f3091
HMH		 1454#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
1455
a73f3091
HMH		 1456/* wlsw_emulstate ------------------------------------------------------ */
1457static ssize_t tpacpi_driver_wlsw_emulstate_show(struct device_driver *drv,
1458 char *buf)
1459{
1460 return snprintf(buf, PAGE_SIZE, "%d\n", !!tpacpi_wlsw_emulstate);
1461}
1462
1463static ssize_t tpacpi_driver_wlsw_emulstate_store(struct device_driver *drv,
1464 const char *buf, size_t count)
1465{
1466 unsigned long t;
1467
1468 if (parse_strtoul(buf, 1, &t))
1469 return -EINVAL;
1470
19d337df 1471 if (tpacpi_wlsw_emulstate != !!t) {
a73f3091 1472 tpacpi_wlsw_emulstate = !!t;
19d337df
JB		 1473 tpacpi_rfk_update_hwblock_state(!t); /* negative logic */
1474 }
a73f3091
HMH		 1475
1476 return count;
1477}
1478
1479static DRIVER_ATTR(wlsw_emulstate, S_IWUSR | S_IRUGO,
1480 tpacpi_driver_wlsw_emulstate_show,
1481 tpacpi_driver_wlsw_emulstate_store);
1482
1483/* bluetooth_emulstate ------------------------------------------------- */
1484static ssize_t tpacpi_driver_bluetooth_emulstate_show(
1485 struct device_driver *drv,
1486 char *buf)
1487{
1488 return snprintf(buf, PAGE_SIZE, "%d\n", !!tpacpi_bluetooth_emulstate);
1489}
1490
1491static ssize_t tpacpi_driver_bluetooth_emulstate_store(
1492 struct device_driver *drv,
1493 const char *buf, size_t count)
1494{
1495 unsigned long t;
1496
1497 if (parse_strtoul(buf, 1, &t))
1498 return -EINVAL;
1499
1500 tpacpi_bluetooth_emulstate = !!t;
1501
1502 return count;
1503}
1504
1505static DRIVER_ATTR(bluetooth_emulstate, S_IWUSR | S_IRUGO,
1506 tpacpi_driver_bluetooth_emulstate_show,
1507 tpacpi_driver_bluetooth_emulstate_store);
1508
1509/* wwan_emulstate ------------------------------------------------- */
1510static ssize_t tpacpi_driver_wwan_emulstate_show(
1511 struct device_driver *drv,
1512 char *buf)
1513{
1514 return snprintf(buf, PAGE_SIZE, "%d\n", !!tpacpi_wwan_emulstate);
1515}
1516
1517static ssize_t tpacpi_driver_wwan_emulstate_store(
1518 struct device_driver *drv,
1519 const char *buf, size_t count)
1520{
1521 unsigned long t;
1522
1523 if (parse_strtoul(buf, 1, &t))
1524 return -EINVAL;
1525
1526 tpacpi_wwan_emulstate = !!t;
1527
1528 return count;
1529}
1530
1531static DRIVER_ATTR(wwan_emulstate, S_IWUSR | S_IRUGO,
1532 tpacpi_driver_wwan_emulstate_show,
1533 tpacpi_driver_wwan_emulstate_store);
1534
0045c0aa
HMH		 1535/* uwb_emulstate ------------------------------------------------- */
1536static ssize_t tpacpi_driver_uwb_emulstate_show(
1537 struct device_driver *drv,
1538 char *buf)
1539{
1540 return snprintf(buf, PAGE_SIZE, "%d\n", !!tpacpi_uwb_emulstate);
1541}
1542
1543static ssize_t tpacpi_driver_uwb_emulstate_store(
1544 struct device_driver *drv,
1545 const char *buf, size_t count)
1546{
1547 unsigned long t;
1548
1549 if (parse_strtoul(buf, 1, &t))
1550 return -EINVAL;
1551
1552 tpacpi_uwb_emulstate = !!t;
1553
1554 return count;
1555}
1556
1557static DRIVER_ATTR(uwb_emulstate, S_IWUSR | S_IRUGO,
1558 tpacpi_driver_uwb_emulstate_show,
1559 tpacpi_driver_uwb_emulstate_store);
a73f3091
HMH		 1560#endif
1561
1562/* --------------------------------------------------------------------- */
1563
35ff8b9f 1564static struct driver_attribute *tpacpi_driver_attributes[] = {
b21a15f6
HMH		 1565 &driver_attr_debug_level, &driver_attr_version,
1566 &driver_attr_interface_version,
1567};
1568
1569static int __init tpacpi_create_driver_attributes(struct device_driver *drv)
1570{
1571 int i, res;
1572
1573 i = 0;
1574 res = 0;
1575 while (!res && i < ARRAY_SIZE(tpacpi_driver_attributes)) {
1576 res = driver_create_file(drv, tpacpi_driver_attributes[i]);
1577 i++;
1578 }
1579
a73f3091
HMH		 1580#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
1581 if (!res && dbg_wlswemul)
1582 res = driver_create_file(drv, &driver_attr_wlsw_emulstate);
1583 if (!res && dbg_bluetoothemul)
1584 res = driver_create_file(drv, &driver_attr_bluetooth_emulstate);
1585 if (!res && dbg_wwanemul)
1586 res = driver_create_file(drv, &driver_attr_wwan_emulstate);
0045c0aa
HMH		 1587 if (!res && dbg_uwbemul)
1588 res = driver_create_file(drv, &driver_attr_uwb_emulstate);
a73f3091
HMH		 1589#endif
1590
b21a15f6
HMH		 1591 return res;
1592}
1593
1594static void tpacpi_remove_driver_attributes(struct device_driver *drv)
1595{
1596 int i;
1597
35ff8b9f 1598 for (i = 0; i < ARRAY_SIZE(tpacpi_driver_attributes); i++)
b21a15f6 1599 driver_remove_file(drv, tpacpi_driver_attributes[i]);
a73f3091
HMH		 1600
1601#ifdef THINKPAD_ACPI_DEBUGFACILITIES
1602 driver_remove_file(drv, &driver_attr_wlsw_emulstate);
1603 driver_remove_file(drv, &driver_attr_bluetooth_emulstate);
1604 driver_remove_file(drv, &driver_attr_wwan_emulstate);
0045c0aa 1605 driver_remove_file(drv, &driver_attr_uwb_emulstate);
a73f3091 1606#endif
b21a15f6
HMH		 1607}
1608
600a99fa
HMH		 1609/*************************************************************************
1610 * Firmware Data
1611 */
1612
1613/*
1614 * Table of recommended minimum BIOS versions
1615 *
1616 * Reasons for listing:
9ddc5b6f 1617 * 1. Stable BIOS, listed because the unknown amount of
600a99fa
HMH		 1618 * bugs and bad ACPI behaviour on older versions
1619 *
1620 * 2. BIOS or EC fw with known bugs that trigger on Linux
1621 *
1622 * 3. BIOS with known reduced functionality in older versions
1623 *
1624 * We recommend the latest BIOS and EC version.
1625 * We only support the latest BIOS and EC fw version as a rule.
1626 *
1627 * Sources: IBM ThinkPad Public Web Documents (update changelogs),
1628 * Information from users in ThinkWiki
e675abaf
HMH		 1629 *
1630 * WARNING: we use this table also to detect that the machine is
1631 * a ThinkPad in some cases, so don't remove entries lightly.
600a99fa
HMH		 1632 */
1633
1634#define TPV_Q(__v, __id1, __id2, __bv1, __bv2) \
1635 { .vendor = (__v), \
1636 .bios = TPID(__id1, __id2), \
1637 .ec = TPACPI_MATCH_ANY, \
1638 .quirks = TPACPI_MATCH_ANY << 16 \
1639 | (__bv1) << 8 | (__bv2) }
1640
1641#define TPV_Q_X(__v, __bid1, __bid2, __bv1, __bv2, \
275014ae 1642 __eid, __ev1, __ev2) \
600a99fa
HMH		 1643 { .vendor = (__v), \
1644 .bios = TPID(__bid1, __bid2), \
275014ae 1645 .ec = __eid, \
600a99fa
HMH		 1646 .quirks = (__ev1) << 24 | (__ev2) << 16 \
1647 | (__bv1) << 8 | (__bv2) }
1648
1649#define TPV_QI0(__id1, __id2, __bv1, __bv2) \
1650 TPV_Q(PCI_VENDOR_ID_IBM, __id1, __id2, __bv1, __bv2)
1651
275014ae 1652/* Outdated IBM BIOSes often lack the EC id string */
600a99fa
HMH		 1653#define TPV_QI1(__id1, __id2, __bv1, __bv2, __ev1, __ev2) \
1654 TPV_Q_X(PCI_VENDOR_ID_IBM, __id1, __id2, \
275014ae
HMH		 1655 __bv1, __bv2, TPID(__id1, __id2), \
1656 __ev1, __ev2), \
1657 TPV_Q_X(PCI_VENDOR_ID_IBM, __id1, __id2, \
1658 __bv1, __bv2, TPACPI_MATCH_UNKNOWN, \
1659 __ev1, __ev2)
600a99fa 1660
275014ae 1661/* Outdated IBM BIOSes often lack the EC id string */
600a99fa
HMH		 1662#define TPV_QI2(__bid1, __bid2, __bv1, __bv2, \
1663 __eid1, __eid2, __ev1, __ev2) \
1664 TPV_Q_X(PCI_VENDOR_ID_IBM, __bid1, __bid2, \
275014ae
HMH		 1665 __bv1, __bv2, TPID(__eid1, __eid2), \
1666 __ev1, __ev2), \
1667 TPV_Q_X(PCI_VENDOR_ID_IBM, __bid1, __bid2, \
1668 __bv1, __bv2, TPACPI_MATCH_UNKNOWN, \
1669 __ev1, __ev2)
600a99fa
HMH		 1670
1671#define TPV_QL0(__id1, __id2, __bv1, __bv2) \
1672 TPV_Q(PCI_VENDOR_ID_LENOVO, __id1, __id2, __bv1, __bv2)
1673
1674#define TPV_QL1(__id1, __id2, __bv1, __bv2, __ev1, __ev2) \
1675 TPV_Q_X(PCI_VENDOR_ID_LENOVO, __id1, __id2, \
275014ae
HMH		 1676 __bv1, __bv2, TPID(__id1, __id2), \
1677 __ev1, __ev2)
600a99fa
HMH		 1678
1679#define TPV_QL2(__bid1, __bid2, __bv1, __bv2, \
1680 __eid1, __eid2, __ev1, __ev2) \
1681 TPV_Q_X(PCI_VENDOR_ID_LENOVO, __bid1, __bid2, \
275014ae
HMH		 1682 __bv1, __bv2, TPID(__eid1, __eid2), \
1683 __ev1, __ev2)
600a99fa
HMH		 1684
1685static const struct tpacpi_quirk tpacpi_bios_version_qtable[] __initconst = {
1686 /* Numeric models ------------------ */
1687 /* FW MODEL BIOS VERS */
1688 TPV_QI0('I', 'M', '6', '5'), /* 570 */
1689 TPV_QI0('I', 'U', '2', '6'), /* 570E */
1690 TPV_QI0('I', 'B', '5', '4'), /* 600 */
1691 TPV_QI0('I', 'H', '4', '7'), /* 600E */
1692 TPV_QI0('I', 'N', '3', '6'), /* 600E */
1693 TPV_QI0('I', 'T', '5', '5'), /* 600X */
1694 TPV_QI0('I', 'D', '4', '8'), /* 770, 770E, 770ED */
1695 TPV_QI0('I', 'I', '4', '2'), /* 770X */
1696 TPV_QI0('I', 'O', '2', '3'), /* 770Z */
1697
1698 /* A-series ------------------------- */
1699 /* FW MODEL BIOS VERS EC VERS */
1700 TPV_QI0('I', 'W', '5', '9'), /* A20m */
1701 TPV_QI0('I', 'V', '6', '9'), /* A20p */
1702 TPV_QI0('1', '0', '2', '6'), /* A21e, A22e */
1703 TPV_QI0('K', 'U', '3', '6'), /* A21e */
1704 TPV_QI0('K', 'X', '3', '6'), /* A21m, A22m */
1705 TPV_QI0('K', 'Y', '3', '8'), /* A21p, A22p */
1706 TPV_QI0('1', 'B', '1', '7'), /* A22e */
1707 TPV_QI0('1', '3', '2', '0'), /* A22m */
1708 TPV_QI0('1', 'E', '7', '3'), /* A30/p (0) */
1709 TPV_QI1('1', 'G', '4', '1', '1', '7'), /* A31/p (0) */
1710 TPV_QI1('1', 'N', '1', '6', '0', '7'), /* A31/p (0) */
1711
1712 /* G-series ------------------------- */
1713 /* FW MODEL BIOS VERS */
1714 TPV_QI0('1', 'T', 'A', '6'), /* G40 */
1715 TPV_QI0('1', 'X', '5', '7'), /* G41 */
1716
1717 /* R-series, T-series --------------- */
1718 /* FW MODEL BIOS VERS EC VERS */
1719 TPV_QI0('1', 'C', 'F', '0'), /* R30 */
1720 TPV_QI0('1', 'F', 'F', '1'), /* R31 */
1721 TPV_QI0('1', 'M', '9', '7'), /* R32 */
1722 TPV_QI0('1', 'O', '6', '1'), /* R40 */
1723 TPV_QI0('1', 'P', '6', '5'), /* R40 */
1724 TPV_QI0('1', 'S', '7', '0'), /* R40e */
1725 TPV_QI1('1', 'R', 'D', 'R', '7', '1'), /* R50/p, R51,
1726 T40/p, T41/p, T42/p (1) */
1727 TPV_QI1('1', 'V', '7', '1', '2', '8'), /* R50e, R51 (1) */
1728 TPV_QI1('7', '8', '7', '1', '0', '6'), /* R51e (1) */
1729 TPV_QI1('7', '6', '6', '9', '1', '6'), /* R52 (1) */
1730 TPV_QI1('7', '0', '6', '9', '2', '8'), /* R52, T43 (1) */
1731
1732 TPV_QI0('I', 'Y', '6', '1'), /* T20 */
1733 TPV_QI0('K', 'Z', '3', '4'), /* T21 */
1734 TPV_QI0('1', '6', '3', '2'), /* T22 */
1735 TPV_QI1('1', 'A', '6', '4', '2', '3'), /* T23 (0) */
1736 TPV_QI1('1', 'I', '7', '1', '2', '0'), /* T30 (0) */
1737 TPV_QI1('1', 'Y', '6', '5', '2', '9'), /* T43/p (1) */
1738
1739 TPV_QL1('7', '9', 'E', '3', '5', '0'), /* T60/p */
1740 TPV_QL1('7', 'C', 'D', '2', '2', '2'), /* R60, R60i */
90765c6a 1741 TPV_QL1('7', 'E', 'D', '0', '1', '5'), /* R60e, R60i */
600a99fa
HMH		 1742
1743 /* BIOS FW BIOS VERS EC FW EC VERS */
1744 TPV_QI2('1', 'W', '9', '0', '1', 'V', '2', '8'), /* R50e (1) */
1745 TPV_QL2('7', 'I', '3', '4', '7', '9', '5', '0'), /* T60/p wide */
1746
1747 /* X-series ------------------------- */
1748 /* FW MODEL BIOS VERS EC VERS */
1749 TPV_QI0('I', 'Z', '9', 'D'), /* X20, X21 */
1750 TPV_QI0('1', 'D', '7', '0'), /* X22, X23, X24 */
1751 TPV_QI1('1', 'K', '4', '8', '1', '8'), /* X30 (0) */
1752 TPV_QI1('1', 'Q', '9', '7', '2', '3'), /* X31, X32 (0) */
1753 TPV_QI1('1', 'U', 'D', '3', 'B', '2'), /* X40 (0) */
1754 TPV_QI1('7', '4', '6', '4', '2', '7'), /* X41 (0) */
1755 TPV_QI1('7', '5', '6', '0', '2', '0'), /* X41t (0) */
1756
90765c6a
HMH		 1757 TPV_QL1('7', 'B', 'D', '7', '4', '0'), /* X60/s */
1758 TPV_QL1('7', 'J', '3', '0', '1', '3'), /* X60t */
600a99fa
HMH		 1759
1760 /* (0) - older versions lack DMI EC fw string and functionality */
1761 /* (1) - older versions known to lack functionality */
1762};
1763
1764#undef TPV_QL1
1765#undef TPV_QL0
1766#undef TPV_QI2
1767#undef TPV_QI1
1768#undef TPV_QI0
1769#undef TPV_Q_X
1770#undef TPV_Q
1771
1772static void __init tpacpi_check_outdated_fw(void)
1773{
1774 unsigned long fwvers;
1775 u16 ec_version, bios_version;
1776
1777 fwvers = tpacpi_check_quirks(tpacpi_bios_version_qtable,
1778 ARRAY_SIZE(tpacpi_bios_version_qtable));
1779
1780 if (!fwvers)
1781 return;
1782
1783 bios_version = fwvers & 0xffffU;
1784 ec_version = (fwvers >> 16) & 0xffffU;
1785
1786 /* note that unknown versions are set to 0x0000 and we use that */
1787 if ((bios_version > thinkpad_id.bios_release) ||
1788 (ec_version > thinkpad_id.ec_release &&
1789 ec_version != TPACPI_MATCH_ANY)) {
1790 /*
1791 * The changelogs would let us track down the exact
1792 * reason, but it is just too much of a pain to track
1793 * it. We only list BIOSes that are either really
1794 * broken, or really stable to begin with, so it is
1795 * best if the user upgrades the firmware anyway.
1796 */
1797 printk(TPACPI_WARN
1798 "WARNING: Outdated ThinkPad BIOS/EC firmware\n");
1799 printk(TPACPI_WARN
1800 "WARNING: This firmware may be missing critical bug "
1801 "fixes and/or important features\n");
1802 }
1803}
1804
e675abaf
HMH		 1805static bool __init tpacpi_is_fw_known(void)
1806{
1807 return tpacpi_check_quirks(tpacpi_bios_version_qtable,
1808 ARRAY_SIZE(tpacpi_bios_version_qtable)) != 0;
1809}
1810
b21a15f6
HMH		 1811/****************************************************************************
1812 ****************************************************************************
1813 *
1814 * Subdrivers
1815 *
1816 ****************************************************************************
1817 ****************************************************************************/
1818
1819/*************************************************************************
7a43f788 1820 * thinkpad-acpi metadata subdriver
b21a15f6
HMH		 1821 */
1822
887965e6 1823static int thinkpad_acpi_driver_read(struct seq_file *m)
1da177e4 1824{
887965e6
AD		 1825 seq_printf(m, "driver:\t\t%s\n", TPACPI_DESC);
1826 seq_printf(m, "version:\t%s\n", TPACPI_VERSION);
1827 return 0;
1da177e4
LT		 1828}
1829
a5763f22
HMH		 1830static struct ibm_struct thinkpad_acpi_driver_data = {
1831 .name = "driver",
1832 .read = thinkpad_acpi_driver_read,
1833};
1834
56b6aeb0
HMH		 1835/*************************************************************************
1836 * Hotkey subdriver
1837 */
1838
0d922e3b
HMH		 1839/*
1840 * ThinkPad firmware event model
1841 *
1842 * The ThinkPad firmware has two main event interfaces: normal ACPI
1843 * notifications (which follow the ACPI standard), and a private event
1844 * interface.
1845 *
1846 * The private event interface also issues events for the hotkeys. As
1847 * the driver gained features, the event handling code ended up being
1848 * built around the hotkey subdriver. This will need to be refactored
1849 * to a more formal event API eventually.
1850 *
1851 * Some "hotkeys" are actually supposed to be used as event reports,
1852 * such as "brightness has changed", "volume has changed", depending on
1853 * the ThinkPad model and how the firmware is operating.
1854 *
1855 * Unlike other classes, hotkey-class events have mask/unmask control on
1856 * non-ancient firmware. However, how it behaves changes a lot with the
1857 * firmware model and version.
1858 */
1859
f74a27d4
HMH		 1860enum { /* hot key scan codes (derived from ACPI DSDT) */
1861 TP_ACPI_HOTKEYSCAN_FNF1 = 0,
1862 TP_ACPI_HOTKEYSCAN_FNF2,
1863 TP_ACPI_HOTKEYSCAN_FNF3,
1864 TP_ACPI_HOTKEYSCAN_FNF4,
1865 TP_ACPI_HOTKEYSCAN_FNF5,
1866 TP_ACPI_HOTKEYSCAN_FNF6,
1867 TP_ACPI_HOTKEYSCAN_FNF7,
1868 TP_ACPI_HOTKEYSCAN_FNF8,
1869 TP_ACPI_HOTKEYSCAN_FNF9,
1870 TP_ACPI_HOTKEYSCAN_FNF10,
1871 TP_ACPI_HOTKEYSCAN_FNF11,
1872 TP_ACPI_HOTKEYSCAN_FNF12,
1873 TP_ACPI_HOTKEYSCAN_FNBACKSPACE,
1874 TP_ACPI_HOTKEYSCAN_FNINSERT,
1875 TP_ACPI_HOTKEYSCAN_FNDELETE,
1876 TP_ACPI_HOTKEYSCAN_FNHOME,
1877 TP_ACPI_HOTKEYSCAN_FNEND,
1878 TP_ACPI_HOTKEYSCAN_FNPAGEUP,
1879 TP_ACPI_HOTKEYSCAN_FNPAGEDOWN,
1880 TP_ACPI_HOTKEYSCAN_FNSPACE,
1881 TP_ACPI_HOTKEYSCAN_VOLUMEUP,
1882 TP_ACPI_HOTKEYSCAN_VOLUMEDOWN,
1883 TP_ACPI_HOTKEYSCAN_MUTE,
1884 TP_ACPI_HOTKEYSCAN_THINKPAD,
1885};
1886
0d922e3b 1887enum { /* Keys/events available through NVRAM polling */
01e88f25
HMH		 1888 TPACPI_HKEY_NVRAM_KNOWN_MASK = 0x00fb88c0U,
1889 TPACPI_HKEY_NVRAM_GOOD_MASK = 0x00fb8000U,
1890};
1891
1892enum { /* Positions of some of the keys in hotkey masks */
1893 TP_ACPI_HKEY_DISPSWTCH_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNF7,
1894 TP_ACPI_HKEY_DISPXPAND_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNF8,
1895 TP_ACPI_HKEY_HIBERNATE_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNF12,
1896 TP_ACPI_HKEY_BRGHTUP_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNHOME,
1897 TP_ACPI_HKEY_BRGHTDWN_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNEND,
1898 TP_ACPI_HKEY_THNKLGHT_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNPAGEUP,
1899 TP_ACPI_HKEY_ZOOM_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNSPACE,
1900 TP_ACPI_HKEY_VOLUP_MASK = 1 << TP_ACPI_HOTKEYSCAN_VOLUMEUP,
1901 TP_ACPI_HKEY_VOLDWN_MASK = 1 << TP_ACPI_HOTKEYSCAN_VOLUMEDOWN,
1902 TP_ACPI_HKEY_MUTE_MASK = 1 << TP_ACPI_HOTKEYSCAN_MUTE,
1903 TP_ACPI_HKEY_THINKPAD_MASK = 1 << TP_ACPI_HOTKEYSCAN_THINKPAD,
1904};
1905
1906enum { /* NVRAM to ACPI HKEY group map */
1907 TP_NVRAM_HKEY_GROUP_HK2 = TP_ACPI_HKEY_THINKPAD_MASK |
1908 TP_ACPI_HKEY_ZOOM_MASK |
1909 TP_ACPI_HKEY_DISPSWTCH_MASK |
1910 TP_ACPI_HKEY_HIBERNATE_MASK,
1911 TP_NVRAM_HKEY_GROUP_BRIGHTNESS = TP_ACPI_HKEY_BRGHTUP_MASK |
1912 TP_ACPI_HKEY_BRGHTDWN_MASK,
1913 TP_NVRAM_HKEY_GROUP_VOLUME = TP_ACPI_HKEY_VOLUP_MASK |
1914 TP_ACPI_HKEY_VOLDWN_MASK |
1915 TP_ACPI_HKEY_MUTE_MASK,
1916};
1917
1918#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
1919struct tp_nvram_state {
1920 u16 thinkpad_toggle:1;
1921 u16 zoom_toggle:1;
1922 u16 display_toggle:1;
1923 u16 thinklight_toggle:1;
1924 u16 hibernate_toggle:1;
1925 u16 displayexp_toggle:1;
1926 u16 display_state:1;
1927 u16 brightness_toggle:1;
1928 u16 volume_toggle:1;
1929 u16 mute:1;
1930
1931 u8 brightness_level;
1932 u8 volume_level;
1933};
1934
db25f16d 1935/* kthread for the hotkey poller */
01e88f25 1936static struct task_struct *tpacpi_hotkey_task;
db25f16d
HMH		 1937
1938/* Acquired while the poller kthread is running, use to sync start/stop */
01e88f25 1939static struct mutex hotkey_thread_mutex;
db25f16d
HMH		 1940
1941/*
0d922e3b
HMH		 1942 * Acquire mutex to write poller control variables as an
1943 * atomic block.
1944 *
1945 * Increment hotkey_config_change when changing them if you
1946 * want the kthread to forget old state.
db25f16d
HMH		 1947 *
1948 * See HOTKEY_CONFIG_CRITICAL_START/HOTKEY_CONFIG_CRITICAL_END
1949 */
01e88f25
HMH		 1950static struct mutex hotkey_thread_data_mutex;
1951static unsigned int hotkey_config_change;
1952
db25f16d
HMH		 1953/*
1954 * hotkey poller control variables
1955 *
1956 * Must be atomic or readers will also need to acquire mutex
0d922e3b
HMH		 1957 *
1958 * HOTKEY_CONFIG_CRITICAL_START/HOTKEY_CONFIG_CRITICAL_END
1959 * should be used only when the changes need to be taken as
1960 * a block, OR when one needs to force the kthread to forget
1961 * old state.
db25f16d
HMH		 1962 */
1963static u32 hotkey_source_mask; /* bit mask 0=ACPI,1=NVRAM */
1964static unsigned int hotkey_poll_freq = 10; /* Hz */
1965
1966#define HOTKEY_CONFIG_CRITICAL_START \
1967 do { \
1968 mutex_lock(&hotkey_thread_data_mutex); \
1969 hotkey_config_change++; \
1970 } while (0);
1971#define HOTKEY_CONFIG_CRITICAL_END \
1972 mutex_unlock(&hotkey_thread_data_mutex);
1973
01e88f25
HMH		 1974#else /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
1975
1976#define hotkey_source_mask 0U
db25f16d
HMH		 1977#define HOTKEY_CONFIG_CRITICAL_START
1978#define HOTKEY_CONFIG_CRITICAL_END
01e88f25
HMH		 1979
1980#endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
1981
f74a27d4
HMH		 1982static struct mutex hotkey_mutex;
1983
a713b4d7
HMH		 1984static enum { /* Reasons for waking up */
1985 TP_ACPI_WAKEUP_NONE = 0, /* None or unknown */
1986 TP_ACPI_WAKEUP_BAYEJ, /* Bay ejection request */
1987 TP_ACPI_WAKEUP_UNDOCK, /* Undock request */
1988} hotkey_wakeup_reason;
1989
1990static int hotkey_autosleep_ack;
1991
0d922e3b
HMH		 1992static u32 hotkey_orig_mask; /* events the BIOS had enabled */
1993static u32 hotkey_all_mask; /* all events supported in fw */
1994static u32 hotkey_reserved_mask; /* events better left disabled */
1995static u32 hotkey_driver_mask; /* events needed by the driver */
1996static u32 hotkey_user_mask; /* events visible to userspace */
1997static u32 hotkey_acpi_mask; /* events enabled in firmware */
6a38abbf 1998
b21a15f6
HMH		 1999static unsigned int hotkey_report_mode;
2000
edf0e0e5 2001static u16 *hotkey_keycode_map;
78f81cc4 2002
94954cc6 2003static struct attribute_set *hotkey_dev_attributes;
a0416420 2004
8b468c0c
HMH		 2005static void tpacpi_driver_event(const unsigned int hkey_event);
2006static void hotkey_driver_event(const unsigned int scancode);
7f0cf712 2007static void hotkey_poll_setup(const bool may_warn);
8b468c0c 2008
6c231bd5
HMH		 2009/* HKEY.MHKG() return bits */
2010#define TP_HOTKEY_TABLET_MASK (1 << 3)
2011
19d337df 2012static int hotkey_get_wlsw(void)
74941a69 2013{
19d337df
JB		 2014 int status;
2015
2016 if (!tp_features.hotkey_wlsw)
2017 return -ENODEV;
2018
a73f3091 2019#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
19d337df
JB		 2020 if (dbg_wlswemul)
2021 return (tpacpi_wlsw_emulstate) ?
2022 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF;
a73f3091 2023#endif
19d337df
JB		 2024
2025 if (!acpi_evalf(hkey_handle, &status, "WLSW", "d"))
74941a69 2026 return -EIO;
19d337df
JB		 2027
2028 return (status) ? TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF;
74941a69
HMH		 2029}
2030
6c231bd5
HMH		 2031static int hotkey_get_tablet_mode(int *status)
2032{
2033 int s;
2034
2035 if (!acpi_evalf(hkey_handle, &s, "MHKG", "d"))
2036 return -EIO;
2037
cee47f5a
HMH		 2038 *status = ((s & TP_HOTKEY_TABLET_MASK) != 0);
2039 return 0;
6c231bd5
HMH		 2040}
2041
b2c985e7 2042/*
0d922e3b
HMH		 2043 * Reads current event mask from firmware, and updates
2044 * hotkey_acpi_mask accordingly. Also resets any bits
2045 * from hotkey_user_mask that are unavailable to be
2046 * delivered (shadow requirement of the userspace ABI).
2047 *
b2c985e7
HMH		 2048 * Call with hotkey_mutex held
2049 */
2050static int hotkey_mask_get(void)
2051{
2052 if (tp_features.hotkey_mask) {
0d922e3b
HMH		 2053 u32 m = 0;
2054
01e88f25 2055 if (!acpi_evalf(hkey_handle, &m, "DHKN", "d"))
b2c985e7 2056 return -EIO;
0d922e3b
HMH		 2057
2058 hotkey_acpi_mask = m;
2059 } else {
2060 /* no mask support doesn't mean no event support... */
2061 hotkey_acpi_mask = hotkey_all_mask;
b2c985e7 2062 }
0d922e3b
HMH		 2063
2064 /* sync userspace-visible mask */
2065 hotkey_user_mask &= (hotkey_acpi_mask | hotkey_source_mask);
b2c985e7
HMH		 2066
2067 return 0;
2068}
2069
0d922e3b
HMH		 2070void static hotkey_mask_warn_incomplete_mask(void)
2071{
2072 /* log only what the user can fix... */
2073 const u32 wantedmask = hotkey_driver_mask &
2074 ~(hotkey_acpi_mask | hotkey_source_mask) &
2075 (hotkey_all_mask | TPACPI_HKEY_NVRAM_KNOWN_MASK);
2076
2077 if (wantedmask)
2078 printk(TPACPI_NOTICE
2079 "required events 0x%08x not enabled!\n",
2080 wantedmask);
2081}
2082
b2c985e7 2083/*
0d922e3b
HMH		 2084 * Set the firmware mask when supported
2085 *
2086 * Also calls hotkey_mask_get to update hotkey_acpi_mask.
2087 *
2088 * NOTE: does not set bits in hotkey_user_mask, but may reset them.
2089 *
b2c985e7
HMH		 2090 * Call with hotkey_mutex held
2091 */
2092static int hotkey_mask_set(u32 mask)
2093{
2094 int i;
2095 int rc = 0;
2096
0d922e3b 2097 const u32 fwmask = mask & ~hotkey_source_mask;
92889022 2098
0d922e3b 2099 if (tp_features.hotkey_mask) {
b2c985e7 2100 for (i = 0; i < 32; i++) {
b2c985e7
HMH		 2101 if (!acpi_evalf(hkey_handle,
2102 NULL, "MHKM", "vdd", i + 1,
0d922e3b 2103 !!(mask & (1 << i)))) {
b2c985e7
HMH		 2104 rc = -EIO;
2105 break;
b2c985e7
HMH		 2106 }
2107 }
0d922e3b 2108 }
b2c985e7 2109
0d922e3b
HMH		 2110 /*
2111 * We *must* make an inconditional call to hotkey_mask_get to
2112 * refresh hotkey_acpi_mask and update hotkey_user_mask
2113 *
2114 * Take the opportunity to also log when we cannot _enable_
2115 * a given event.
2116 */
2117 if (!hotkey_mask_get() && !rc && (fwmask & ~hotkey_acpi_mask)) {
2118 printk(TPACPI_NOTICE
2119 "asked for hotkey mask 0x%08x, but "
2120 "firmware forced it to 0x%08x\n",
2121 fwmask, hotkey_acpi_mask);
b2c985e7
HMH		 2122 }
2123
6b30eb7d
HMH		 2124 if (tpacpi_lifecycle != TPACPI_LIFE_EXITING)
2125 hotkey_mask_warn_incomplete_mask();
0d922e3b
HMH		 2126
2127 return rc;
2128}
2129
2130/*
2131 * Sets hotkey_user_mask and tries to set the firmware mask
2132 *
2133 * Call with hotkey_mutex held
2134 */
2135static int hotkey_user_mask_set(const u32 mask)
2136{
2137 int rc;
2138
2139 /* Give people a chance to notice they are doing something that
2140 * is bound to go boom on their users sooner or later */
2141 if (!tp_warned.hotkey_mask_ff &&
2142 (mask == 0xffff || mask == 0xffffff ||
2143 mask == 0xffffffff)) {
2144 tp_warned.hotkey_mask_ff = 1;
2145 printk(TPACPI_NOTICE
2146 "setting the hotkey mask to 0x%08x is likely "
2147 "not the best way to go about it\n", mask);
2148 printk(TPACPI_NOTICE
2149 "please consider using the driver defaults, "
2150 "and refer to up-to-date thinkpad-acpi "
2151 "documentation\n");
2152 }
2153
2154 /* Try to enable what the user asked for, plus whatever we need.
2155 * this syncs everything but won't enable bits in hotkey_user_mask */
2156 rc = hotkey_mask_set((mask | hotkey_driver_mask) & ~hotkey_source_mask);
2157
2158 /* Enable the available bits in hotkey_user_mask */
2159 hotkey_user_mask = mask & (hotkey_acpi_mask | hotkey_source_mask);
2160
b2c985e7
HMH		 2161 return rc;
2162}
2163
8b468c0c
HMH		 2164/*
2165 * Sets the driver hotkey mask.
2166 *
2167 * Can be called even if the hotkey subdriver is inactive
2168 */
2169static int tpacpi_hotkey_driver_mask_set(const u32 mask)
2170{
2171 int rc;
2172
2173 /* Do the right thing if hotkey_init has not been called yet */
2174 if (!tp_features.hotkey) {
2175 hotkey_driver_mask = mask;
2176 return 0;
2177 }
2178
2179 mutex_lock(&hotkey_mutex);
2180
2181 HOTKEY_CONFIG_CRITICAL_START
2182 hotkey_driver_mask = mask;
b684a363 2183#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
8b468c0c 2184 hotkey_source_mask |= (mask & ~hotkey_all_mask);
b684a363 2185#endif
8b468c0c
HMH		 2186 HOTKEY_CONFIG_CRITICAL_END
2187
2188 rc = hotkey_mask_set((hotkey_acpi_mask | hotkey_driver_mask) &
2189 ~hotkey_source_mask);
7f0cf712
HMH		 2190 hotkey_poll_setup(true);
2191
8b468c0c
HMH		 2192 mutex_unlock(&hotkey_mutex);
2193
2194 return rc;
2195}
2196
b2c985e7
HMH		 2197static int hotkey_status_get(int *status)
2198{
2199 if (!acpi_evalf(hkey_handle, status, "DHKC", "d"))
2200 return -EIO;
2201
2202 return 0;
2203}
2204
2586d566 2205static int hotkey_status_set(bool enable)
b2c985e7 2206{
2586d566 2207 if (!acpi_evalf(hkey_handle, NULL, "MHKC", "vd", enable ? 1 : 0))
b2c985e7
HMH		 2208 return -EIO;
2209
2210 return 0;
2211}
2212
6c231bd5 2213static void tpacpi_input_send_tabletsw(void)
b3ec6f91 2214{
6c231bd5 2215 int state;
b3ec6f91 2216
6c231bd5
HMH		 2217 if (tp_features.hotkey_tablet &&
2218 !hotkey_get_tablet_mode(&state)) {
2219 mutex_lock(&tpacpi_inputdev_send_mutex);
b3ec6f91 2220
6c231bd5
HMH		 2221 input_report_switch(tpacpi_inputdev,
2222 SW_TABLET_MODE, !!state);
2223 input_sync(tpacpi_inputdev);
2224
2225 mutex_unlock(&tpacpi_inputdev_send_mutex);
2226 }
b3ec6f91
HMH		 2227}
2228
0d922e3b
HMH		 2229/* Do NOT call without validating scancode first */
2230static void tpacpi_input_send_key(const unsigned int scancode)
b7c8c200 2231{
0d922e3b 2232 const unsigned int keycode = hotkey_keycode_map[scancode];
b7c8c200
HMH		 2233
2234 if (keycode != KEY_RESERVED) {
2235 mutex_lock(&tpacpi_inputdev_send_mutex);
2236
2237 input_report_key(tpacpi_inputdev, keycode, 1);
2238 if (keycode == KEY_UNKNOWN)
2239 input_event(tpacpi_inputdev, EV_MSC, MSC_SCAN,
2240 scancode);
2241 input_sync(tpacpi_inputdev);
2242
2243 input_report_key(tpacpi_inputdev, keycode, 0);
2244 if (keycode == KEY_UNKNOWN)
2245 input_event(tpacpi_inputdev, EV_MSC, MSC_SCAN,
2246 scancode);
2247 input_sync(tpacpi_inputdev);
2248
2249 mutex_unlock(&tpacpi_inputdev_send_mutex);
2250 }
2251}
2252
0d922e3b
HMH		 2253/* Do NOT call without validating scancode first */
2254static void tpacpi_input_send_key_masked(const unsigned int scancode)
2255{
8b468c0c 2256 hotkey_driver_event(scancode);
0d922e3b
HMH		 2257 if (hotkey_user_mask & (1 << scancode))
2258 tpacpi_input_send_key(scancode);
2259}
2260
01e88f25
HMH		 2261#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
2262static struct tp_acpi_drv_struct ibm_hotkey_acpidriver;
2263
0d922e3b 2264/* Do NOT call without validating scancode first */
01e88f25
HMH		 2265static void tpacpi_hotkey_send_key(unsigned int scancode)
2266{
0d922e3b 2267 tpacpi_input_send_key_masked(scancode);
01e88f25
HMH		 2268 if (hotkey_report_mode < 2) {
2269 acpi_bus_generate_proc_event(ibm_hotkey_acpidriver.device,
67bcae6e 2270 0x80, TP_HKEY_EV_HOTKEY_BASE + scancode);
01e88f25
HMH		 2271 }
2272}
2273
0d922e3b 2274static void hotkey_read_nvram(struct tp_nvram_state *n, const u32 m)
01e88f25
HMH		 2275{
2276 u8 d;
2277
2278 if (m & TP_NVRAM_HKEY_GROUP_HK2) {
2279 d = nvram_read_byte(TP_NVRAM_ADDR_HK2);
2280 n->thinkpad_toggle = !!(d & TP_NVRAM_MASK_HKT_THINKPAD);
2281 n->zoom_toggle = !!(d & TP_NVRAM_MASK_HKT_ZOOM);
2282 n->display_toggle = !!(d & TP_NVRAM_MASK_HKT_DISPLAY);
2283 n->hibernate_toggle = !!(d & TP_NVRAM_MASK_HKT_HIBERNATE);
2284 }
2285 if (m & TP_ACPI_HKEY_THNKLGHT_MASK) {
2286 d = nvram_read_byte(TP_NVRAM_ADDR_THINKLIGHT);
2287 n->thinklight_toggle = !!(d & TP_NVRAM_MASK_THINKLIGHT);
2288 }
2289 if (m & TP_ACPI_HKEY_DISPXPAND_MASK) {
2290 d = nvram_read_byte(TP_NVRAM_ADDR_VIDEO);
2291 n->displayexp_toggle =
2292 !!(d & TP_NVRAM_MASK_HKT_DISPEXPND);
2293 }
2294 if (m & TP_NVRAM_HKEY_GROUP_BRIGHTNESS) {
2295 d = nvram_read_byte(TP_NVRAM_ADDR_BRIGHTNESS);
2296 n->brightness_level = (d & TP_NVRAM_MASK_LEVEL_BRIGHTNESS)
2297 >> TP_NVRAM_POS_LEVEL_BRIGHTNESS;
2298 n->brightness_toggle =
2299 !!(d & TP_NVRAM_MASK_HKT_BRIGHTNESS);
2300 }
2301 if (m & TP_NVRAM_HKEY_GROUP_VOLUME) {
2302 d = nvram_read_byte(TP_NVRAM_ADDR_MIXER);
2303 n->volume_level = (d & TP_NVRAM_MASK_LEVEL_VOLUME)
2304 >> TP_NVRAM_POS_LEVEL_VOLUME;
2305 n->mute = !!(d & TP_NVRAM_MASK_MUTE);
2306 n->volume_toggle = !!(d & TP_NVRAM_MASK_HKT_VOLUME);
2307 }
2308}
2309
0d922e3b
HMH		 2310static void hotkey_compare_and_issue_event(struct tp_nvram_state *oldn,
2311 struct tp_nvram_state *newn,
2312 const u32 event_mask)
2313{
2314
01e88f25 2315#define TPACPI_COMPARE_KEY(__scancode, __member) \
35ff8b9f 2316 do { \
0d922e3b 2317 if ((event_mask & (1 << __scancode)) && \
35ff8b9f 2318 oldn->__member != newn->__member) \
0d922e3b 2319 tpacpi_hotkey_send_key(__scancode); \
35ff8b9f 2320 } while (0)
01e88f25
HMH		 2321
2322#define TPACPI_MAY_SEND_KEY(__scancode) \
0d922e3b
HMH		 2323 do { \
2324 if (event_mask & (1 << __scancode)) \
2325 tpacpi_hotkey_send_key(__scancode); \
2326 } while (0)
01e88f25 2327
5d756db9
HMH		 2328 void issue_volchange(const unsigned int oldvol,
2329 const unsigned int newvol)
2330 {
2331 unsigned int i = oldvol;
2332
2333 while (i > newvol) {
2334 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEDOWN);
2335 i--;
2336 }
2337 while (i < newvol) {
2338 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEUP);
2339 i++;
2340 }
2341 }
2342
28999022
HMH		 2343 void issue_brightnesschange(const unsigned int oldbrt,
2344 const unsigned int newbrt)
2345 {
2346 unsigned int i = oldbrt;
2347
2348 while (i > newbrt) {
2349 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNEND);
2350 i--;
2351 }
2352 while (i < newbrt) {
2353 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNHOME);
2354 i++;
2355 }
2356 }
2357
01e88f25
HMH		 2358 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_THINKPAD, thinkpad_toggle);
2359 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNSPACE, zoom_toggle);
2360 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNF7, display_toggle);
2361 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNF12, hibernate_toggle);
2362
2363 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNPAGEUP, thinklight_toggle);
2364
2365 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNF8, displayexp_toggle);
2366
5d756db9
HMH		 2367 /*
2368 * Handle volume
2369 *
2370 * This code is supposed to duplicate the IBM firmware behaviour:
2371 * - Pressing MUTE issues mute hotkey message, even when already mute
2372 * - Pressing Volume up/down issues volume up/down hotkey messages,
2373 * even when already at maximum or minumum volume
2374 * - The act of unmuting issues volume up/down notification,
2375 * depending which key was used to unmute
2376 *
2377 * We are constrained to what the NVRAM can tell us, which is not much
2378 * and certainly not enough if more than one volume hotkey was pressed
2379 * since the last poll cycle.
2380 *
2381 * Just to make our life interesting, some newer Lenovo ThinkPads have
2382 * bugs in the BIOS and may fail to update volume_toggle properly.
2383 */
2384 if (newn->mute) {
2385 /* muted */
2386 if (!oldn->mute ||
2387 oldn->volume_toggle != newn->volume_toggle ||
2388 oldn->volume_level != newn->volume_level) {
2389 /* recently muted, or repeated mute keypress, or
2390 * multiple presses ending in mute */
2391 issue_volchange(oldn->volume_level, newn->volume_level);
01e88f25
HMH		 2392 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_MUTE);
2393 }
5d756db9
HMH		 2394 } else {
2395 /* unmute */
2396 if (oldn->mute) {
2397 /* recently unmuted, issue 'unmute' keypress */
01e88f25 2398 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEUP);
5d756db9
HMH		 2399 }
2400 if (oldn->volume_level != newn->volume_level) {
2401 issue_volchange(oldn->volume_level, newn->volume_level);
2402 } else if (oldn->volume_toggle != newn->volume_toggle) {
2403 /* repeated vol up/down keypress at end of scale ? */
2404 if (newn->volume_level == 0)
01e88f25 2405 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEDOWN);
5d756db9
HMH		 2406 else if (newn->volume_level >= TP_NVRAM_LEVEL_VOLUME_MAX)
2407 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEUP);
01e88f25
HMH		 2408 }
2409 }
2410
2411 /* handle brightness */
28999022
HMH		 2412 if (oldn->brightness_level != newn->brightness_level) {
2413 issue_brightnesschange(oldn->brightness_level,
2414 newn->brightness_level);
2415 } else if (oldn->brightness_toggle != newn->brightness_toggle) {
2416 /* repeated key presses that didn't change state */
2417 if (newn->brightness_level == 0)
01e88f25 2418 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNEND);
28999022
HMH		 2419 else if (newn->brightness_level >= bright_maxlvl
2420 && !tp_features.bright_unkfw)
2421 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNHOME);
01e88f25 2422 }
01e88f25
HMH		 2423
2424#undef TPACPI_COMPARE_KEY
2425#undef TPACPI_MAY_SEND_KEY
0d922e3b 2426}
01e88f25 2427
0d922e3b
HMH		 2428/*
2429 * Polling driver
2430 *
2431 * We track all events in hotkey_source_mask all the time, since
2432 * most of them are edge-based. We only issue those requested by
2433 * hotkey_user_mask or hotkey_driver_mask, though.
2434 */
01e88f25
HMH		 2435static int hotkey_kthread(void *data)
2436{
2437 struct tp_nvram_state s[2];
0d922e3b 2438 u32 poll_mask, event_mask;
01e88f25
HMH		 2439 unsigned int si, so;
2440 unsigned long t;
2441 unsigned int change_detector, must_reset;
db25f16d 2442 unsigned int poll_freq;
01e88f25
HMH		 2443
2444 mutex_lock(&hotkey_thread_mutex);
2445
2446 if (tpacpi_lifecycle == TPACPI_LIFE_EXITING)
2447 goto exit;
2448
2449 set_freezable();
2450
2451 so = 0;
2452 si = 1;
2453 t = 0;
2454
2455 /* Initial state for compares */
2456 mutex_lock(&hotkey_thread_data_mutex);
2457 change_detector = hotkey_config_change;
0d922e3b
HMH		 2458 poll_mask = hotkey_source_mask;
2459 event_mask = hotkey_source_mask &
2460 (hotkey_driver_mask | hotkey_user_mask);
db25f16d 2461 poll_freq = hotkey_poll_freq;
01e88f25 2462 mutex_unlock(&hotkey_thread_data_mutex);
0d922e3b 2463 hotkey_read_nvram(&s[so], poll_mask);
01e88f25 2464
db25f16d
HMH		 2465 while (!kthread_should_stop()) {
2466 if (t == 0) {
2467 if (likely(poll_freq))
2468 t = 1000/poll_freq;
2469 else
2470 t = 100; /* should never happen... */
2471 }
01e88f25
HMH		 2472 t = msleep_interruptible(t);
2473 if (unlikely(kthread_should_stop()))
2474 break;
2475 must_reset = try_to_freeze();
2476 if (t > 0 && !must_reset)
2477 continue;
2478
2479 mutex_lock(&hotkey_thread_data_mutex);
2480 if (must_reset || hotkey_config_change != change_detector) {
2481 /* forget old state on thaw or config change */
2482 si = so;
2483 t = 0;
2484 change_detector = hotkey_config_change;
2485 }
0d922e3b
HMH		 2486 poll_mask = hotkey_source_mask;
2487 event_mask = hotkey_source_mask &
2488 (hotkey_driver_mask | hotkey_user_mask);
db25f16d 2489 poll_freq = hotkey_poll_freq;
01e88f25
HMH		 2490 mutex_unlock(&hotkey_thread_data_mutex);
2491
0d922e3b
HMH		 2492 if (likely(poll_mask)) {
2493 hotkey_read_nvram(&s[si], poll_mask);
01e88f25
HMH		 2494 if (likely(si != so)) {
2495 hotkey_compare_and_issue_event(&s[so], &s[si],
0d922e3b 2496 event_mask);
01e88f25
HMH		 2497 }
2498 }
2499
2500 so = si;
2501 si ^= 1;
2502 }
2503
2504exit:
2505 mutex_unlock(&hotkey_thread_mutex);
2506 return 0;
2507}
2508
db25f16d 2509/* call with hotkey_mutex held */
01e88f25
HMH		 2510static void hotkey_poll_stop_sync(void)
2511{
2512 if (tpacpi_hotkey_task) {
2513 if (frozen(tpacpi_hotkey_task) ||
2514 freezing(tpacpi_hotkey_task))
2515 thaw_process(tpacpi_hotkey_task);
2516
2517 kthread_stop(tpacpi_hotkey_task);
2518 tpacpi_hotkey_task = NULL;
2519 mutex_lock(&hotkey_thread_mutex);
2520 /* at this point, the thread did exit */
2521 mutex_unlock(&hotkey_thread_mutex);
2522 }
2523}
2524
2525/* call with hotkey_mutex held */
7f0cf712 2526static void hotkey_poll_setup(const bool may_warn)
01e88f25 2527{
0d922e3b
HMH		 2528 const u32 poll_driver_mask = hotkey_driver_mask & hotkey_source_mask;
2529 const u32 poll_user_mask = hotkey_user_mask & hotkey_source_mask;
db25f16d 2530
0d922e3b
HMH		 2531 if (hotkey_poll_freq > 0 &&
2532 (poll_driver_mask ||
2533 (poll_user_mask && tpacpi_inputdev->users > 0))) {
01e88f25
HMH		 2534 if (!tpacpi_hotkey_task) {
2535 tpacpi_hotkey_task = kthread_run(hotkey_kthread,
95e57ab2 2536 NULL, TPACPI_NVRAM_KTHREAD_NAME);
01e88f25
HMH		 2537 if (IS_ERR(tpacpi_hotkey_task)) {
2538 tpacpi_hotkey_task = NULL;
35ff8b9f
HMH		 2539 printk(TPACPI_ERR
2540 "could not create kernel thread "
01e88f25
HMH		 2541 "for hotkey polling\n");
2542 }
2543 }
2544 } else {
2545 hotkey_poll_stop_sync();
0d922e3b 2546 if (may_warn && (poll_driver_mask || poll_user_mask) &&
db25f16d 2547 hotkey_poll_freq == 0) {
35ff8b9f 2548 printk(TPACPI_NOTICE
0d922e3b
HMH		 2549 "hot keys 0x%08x and/or events 0x%08x "
2550 "require polling, which is currently "
2551 "disabled\n",
2552 poll_user_mask, poll_driver_mask);
01e88f25
HMH		 2553 }
2554 }
2555}
2556
7f0cf712 2557static void hotkey_poll_setup_safe(const bool may_warn)
01e88f25
HMH		 2558{
2559 mutex_lock(&hotkey_mutex);
2560 hotkey_poll_setup(may_warn);
2561 mutex_unlock(&hotkey_mutex);
2562}
2563
db25f16d
HMH		 2564/* call with hotkey_mutex held */
2565static void hotkey_poll_set_freq(unsigned int freq)
2566{
2567 if (!freq)
2568 hotkey_poll_stop_sync();
2569
db25f16d 2570 hotkey_poll_freq = freq;
db25f16d
HMH		 2571}
2572
1bc6b9cd
HMH		 2573#else /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
2574
7f0cf712
HMH		 2575static void hotkey_poll_setup(const bool __unused)
2576{
2577}
2578
2579static void hotkey_poll_setup_safe(const bool __unused)
1bc6b9cd
HMH		 2580{
2581}
2582
2583#endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
2584
01e88f25
HMH		 2585static int hotkey_inputdev_open(struct input_dev *dev)
2586{
2587 switch (tpacpi_lifecycle) {
2588 case TPACPI_LIFE_INIT:
01e88f25 2589 case TPACPI_LIFE_RUNNING:
db25f16d 2590 hotkey_poll_setup_safe(false);
01e88f25 2591 return 0;
b589ea4c
HMH		 2592 case TPACPI_LIFE_EXITING:
2593 return -EBUSY;
01e88f25
HMH		 2594 }
2595
2596 /* Should only happen if tpacpi_lifecycle is corrupt */
2597 BUG();
2598 return -EBUSY;
2599}
2600
2601static void hotkey_inputdev_close(struct input_dev *dev)
2602{
2603 /* disable hotkey polling when possible */
b589ea4c 2604 if (tpacpi_lifecycle != TPACPI_LIFE_EXITING &&
0d922e3b 2605 !(hotkey_source_mask & hotkey_driver_mask))
db25f16d 2606 hotkey_poll_setup_safe(false);
01e88f25 2607}
01e88f25 2608
a0416420
HMH		 2609/* sysfs hotkey enable ------------------------------------------------- */
2610static ssize_t hotkey_enable_show(struct device *dev,
2611 struct device_attribute *attr,
2612 char *buf)
2613{
ae92bd17 2614 int res, status;
a0416420 2615
2586d566
HMH		 2616 printk_deprecated_attribute("hotkey_enable",
2617 "Hotkey reporting is always enabled");
2618
b2c985e7 2619 res = hotkey_status_get(&status);
a0416420
HMH		 2620 if (res)
2621 return res;
2622
2623 return snprintf(buf, PAGE_SIZE, "%d\n", status);
2624}
2625
2626static ssize_t hotkey_enable_store(struct device *dev,
2627 struct device_attribute *attr,
2628 const char *buf, size_t count)
2629{
2630 unsigned long t;
2586d566
HMH		 2631
2632 printk_deprecated_attribute("hotkey_enable",
2633 "Hotkeys can be disabled through hotkey_mask");
a0416420
HMH		 2634
2635 if (parse_strtoul(buf, 1, &t))
2636 return -EINVAL;
2637
2586d566
HMH		 2638 if (t == 0)
2639 return -EPERM;
a0416420 2640
2586d566 2641 return count;
a0416420
HMH		 2642}
2643
2644static struct device_attribute dev_attr_hotkey_enable =
cc4c24e1 2645 __ATTR(hotkey_enable, S_IWUSR | S_IRUGO,
a0416420
HMH		 2646 hotkey_enable_show, hotkey_enable_store);
2647
2648/* sysfs hotkey mask --------------------------------------------------- */
2649static ssize_t hotkey_mask_show(struct device *dev,
2650 struct device_attribute *attr,
2651 char *buf)
2652{
0d922e3b 2653 return snprintf(buf, PAGE_SIZE, "0x%08x\n", hotkey_user_mask);
a0416420
HMH		 2654}
2655
2656static ssize_t hotkey_mask_store(struct device *dev,
2657 struct device_attribute *attr,
2658 const char *buf, size_t count)
2659{
2660 unsigned long t;
b2c985e7 2661 int res;
a0416420 2662
ae92bd17 2663 if (parse_strtoul(buf, 0xffffffffUL, &t))
a0416420
HMH		 2664 return -EINVAL;
2665
7646ea88 2666 if (mutex_lock_killable(&hotkey_mutex))
b2c985e7
HMH		 2667 return -ERESTARTSYS;
2668
0d922e3b 2669 res = hotkey_user_mask_set(t);
01e88f25
HMH		 2670
2671#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
db25f16d 2672 hotkey_poll_setup(true);
01e88f25
HMH		 2673#endif
2674
b2c985e7 2675 mutex_unlock(&hotkey_mutex);
a0416420 2676
56e2c200
HMH		 2677 tpacpi_disclose_usertask("hotkey_mask", "set to 0x%08lx\n", t);
2678
a0416420
HMH		 2679 return (res) ? res : count;
2680}
2681
2682static struct device_attribute dev_attr_hotkey_mask =
cc4c24e1 2683 __ATTR(hotkey_mask, S_IWUSR | S_IRUGO,
a0416420
HMH		 2684 hotkey_mask_show, hotkey_mask_store);
2685
2686/* sysfs hotkey bios_enabled ------------------------------------------- */
2687static ssize_t hotkey_bios_enabled_show(struct device *dev,
2688 struct device_attribute *attr,
2689 char *buf)
2690{
2586d566 2691 return sprintf(buf, "0\n");
a0416420
HMH		 2692}
2693
2694static struct device_attribute dev_attr_hotkey_bios_enabled =
cc4c24e1 2695 __ATTR(hotkey_bios_enabled, S_IRUGO, hotkey_bios_enabled_show, NULL);
a0416420
HMH		 2696
2697/* sysfs hotkey bios_mask ---------------------------------------------- */
2698static ssize_t hotkey_bios_mask_show(struct device *dev,
2699 struct device_attribute *attr,
2700 char *buf)
2701{
06777be6
HMH		 2702 printk_deprecated_attribute("hotkey_bios_mask",
2703 "This attribute is useless.");
ae92bd17 2704 return snprintf(buf, PAGE_SIZE, "0x%08x\n", hotkey_orig_mask);
a0416420
HMH		 2705}
2706
2707static struct device_attribute dev_attr_hotkey_bios_mask =
cc4c24e1 2708 __ATTR(hotkey_bios_mask, S_IRUGO, hotkey_bios_mask_show, NULL);
a0416420 2709
9b010de5
HMH		 2710/* sysfs hotkey all_mask ----------------------------------------------- */
2711static ssize_t hotkey_all_mask_show(struct device *dev,
2712 struct device_attribute *attr,
2713 char *buf)
2714{
01e88f25
HMH		 2715 return snprintf(buf, PAGE_SIZE, "0x%08x\n",
2716 hotkey_all_mask | hotkey_source_mask);
9b010de5
HMH		 2717}
2718
2719static struct device_attribute dev_attr_hotkey_all_mask =
2720 __ATTR(hotkey_all_mask, S_IRUGO, hotkey_all_mask_show, NULL);
2721
2722/* sysfs hotkey recommended_mask --------------------------------------- */
2723static ssize_t hotkey_recommended_mask_show(struct device *dev,
2724 struct device_attribute *attr,
2725 char *buf)
2726{
2727 return snprintf(buf, PAGE_SIZE, "0x%08x\n",
01e88f25
HMH		 2728 (hotkey_all_mask | hotkey_source_mask)
2729 & ~hotkey_reserved_mask);
9b010de5
HMH		 2730}
2731
2732static struct device_attribute dev_attr_hotkey_recommended_mask =
2733 __ATTR(hotkey_recommended_mask, S_IRUGO,
2734 hotkey_recommended_mask_show, NULL);
2735
01e88f25
HMH		 2736#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
2737
2738/* sysfs hotkey hotkey_source_mask ------------------------------------- */
2739static ssize_t hotkey_source_mask_show(struct device *dev,
2740 struct device_attribute *attr,
2741 char *buf)
2742{
2743 return snprintf(buf, PAGE_SIZE, "0x%08x\n", hotkey_source_mask);
2744}
2745
2746static ssize_t hotkey_source_mask_store(struct device *dev,
2747 struct device_attribute *attr,
2748 const char *buf, size_t count)
2749{
2750 unsigned long t;
0d922e3b
HMH		 2751 u32 r_ev;
2752 int rc;
01e88f25
HMH		 2753
2754 if (parse_strtoul(buf, 0xffffffffUL, &t) ||
2755 ((t & ~TPACPI_HKEY_NVRAM_KNOWN_MASK) != 0))
2756 return -EINVAL;
2757
7646ea88 2758 if (mutex_lock_killable(&hotkey_mutex))
01e88f25
HMH		 2759 return -ERESTARTSYS;
2760
2761 HOTKEY_CONFIG_CRITICAL_START
2762 hotkey_source_mask = t;
2763 HOTKEY_CONFIG_CRITICAL_END
2764
0d922e3b
HMH		 2765 rc = hotkey_mask_set((hotkey_user_mask | hotkey_driver_mask) &
2766 ~hotkey_source_mask);
db25f16d 2767 hotkey_poll_setup(true);
0d922e3b
HMH		 2768
2769 /* check if events needed by the driver got disabled */
2770 r_ev = hotkey_driver_mask & ~(hotkey_acpi_mask & hotkey_all_mask)
2771 & ~hotkey_source_mask & TPACPI_HKEY_NVRAM_KNOWN_MASK;
01e88f25
HMH		 2772
2773 mutex_unlock(&hotkey_mutex);
2774
0d922e3b
HMH		 2775 if (rc < 0)
2776 printk(TPACPI_ERR "hotkey_source_mask: failed to update the"
2777 "firmware event mask!\n");
2778
2779 if (r_ev)
2780 printk(TPACPI_NOTICE "hotkey_source_mask: "
2781 "some important events were disabled: "
2782 "0x%04x\n", r_ev);
2783
56e2c200
HMH		 2784 tpacpi_disclose_usertask("hotkey_source_mask", "set to 0x%08lx\n", t);
2785
0d922e3b 2786 return (rc < 0) ? rc : count;
01e88f25
HMH		 2787}
2788
2789static struct device_attribute dev_attr_hotkey_source_mask =
2790 __ATTR(hotkey_source_mask, S_IWUSR | S_IRUGO,
2791 hotkey_source_mask_show, hotkey_source_mask_store);
2792
2793/* sysfs hotkey hotkey_poll_freq --------------------------------------- */
2794static ssize_t hotkey_poll_freq_show(struct device *dev,
2795 struct device_attribute *attr,
2796 char *buf)
2797{
2798 return snprintf(buf, PAGE_SIZE, "%d\n", hotkey_poll_freq);
2799}
2800
2801static ssize_t hotkey_poll_freq_store(struct device *dev,
2802 struct device_attribute *attr,
2803 const char *buf, size_t count)
2804{
2805 unsigned long t;
2806
2807 if (parse_strtoul(buf, 25, &t))
2808 return -EINVAL;
2809
7646ea88 2810 if (mutex_lock_killable(&hotkey_mutex))
01e88f25
HMH		 2811 return -ERESTARTSYS;
2812
db25f16d
HMH		 2813 hotkey_poll_set_freq(t);
2814 hotkey_poll_setup(true);
01e88f25 2815
01e88f25
HMH		 2816 mutex_unlock(&hotkey_mutex);
2817
56e2c200
HMH		 2818 tpacpi_disclose_usertask("hotkey_poll_freq", "set to %lu\n", t);
2819
01e88f25
HMH		 2820 return count;
2821}
2822
2823static struct device_attribute dev_attr_hotkey_poll_freq =
2824 __ATTR(hotkey_poll_freq, S_IWUSR | S_IRUGO,
2825 hotkey_poll_freq_show, hotkey_poll_freq_store);
2826
2827#endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
2828
50ebec09 2829/* sysfs hotkey radio_sw (pollable) ------------------------------------ */
74941a69
HMH		 2830static ssize_t hotkey_radio_sw_show(struct device *dev,
2831 struct device_attribute *attr,
2832 char *buf)
2833{
19d337df
JB		 2834 int res;
2835 res = hotkey_get_wlsw();
74941a69
HMH		 2836 if (res < 0)
2837 return res;
2838
19d337df
JB		 2839 /* Opportunistic update */
2840 tpacpi_rfk_update_hwblock_state((res == TPACPI_RFK_RADIO_OFF));
2841
2842 return snprintf(buf, PAGE_SIZE, "%d\n",
2843 (res == TPACPI_RFK_RADIO_OFF) ? 0 : 1);
74941a69
HMH		 2844}
2845
2846static struct device_attribute dev_attr_hotkey_radio_sw =
2847 __ATTR(hotkey_radio_sw, S_IRUGO, hotkey_radio_sw_show, NULL);
2848
50ebec09
HMH		 2849static void hotkey_radio_sw_notify_change(void)
2850{
2851 if (tp_features.hotkey_wlsw)
2852 sysfs_notify(&tpacpi_pdev->dev.kobj, NULL,
2853 "hotkey_radio_sw");
2854}
2855
6c231bd5
HMH		 2856/* sysfs hotkey tablet mode (pollable) --------------------------------- */
2857static ssize_t hotkey_tablet_mode_show(struct device *dev,
2858 struct device_attribute *attr,
2859 char *buf)
2860{
2861 int res, s;
2862 res = hotkey_get_tablet_mode(&s);
2863 if (res < 0)
2864 return res;
2865
2866 return snprintf(buf, PAGE_SIZE, "%d\n", !!s);
2867}
2868
2869static struct device_attribute dev_attr_hotkey_tablet_mode =
2870 __ATTR(hotkey_tablet_mode, S_IRUGO, hotkey_tablet_mode_show, NULL);
2871
2872static void hotkey_tablet_mode_notify_change(void)
2873{
2874 if (tp_features.hotkey_tablet)
2875 sysfs_notify(&tpacpi_pdev->dev.kobj, NULL,
2876 "hotkey_tablet_mode");
2877}
2878
ff80f137
HMH		 2879/* sysfs hotkey report_mode -------------------------------------------- */
2880static ssize_t hotkey_report_mode_show(struct device *dev,
2881 struct device_attribute *attr,
2882 char *buf)
2883{
2884 return snprintf(buf, PAGE_SIZE, "%d\n",
2885 (hotkey_report_mode != 0) ? hotkey_report_mode : 1);
2886}
2887
2888static struct device_attribute dev_attr_hotkey_report_mode =
2889 __ATTR(hotkey_report_mode, S_IRUGO, hotkey_report_mode_show, NULL);
2890
50ebec09 2891/* sysfs wakeup reason (pollable) -------------------------------------- */
a713b4d7
HMH		 2892static ssize_t hotkey_wakeup_reason_show(struct device *dev,
2893 struct device_attribute *attr,
2894 char *buf)
2895{
2896 return snprintf(buf, PAGE_SIZE, "%d\n", hotkey_wakeup_reason);
2897}
2898
2899static struct device_attribute dev_attr_hotkey_wakeup_reason =
2900 __ATTR(wakeup_reason, S_IRUGO, hotkey_wakeup_reason_show, NULL);
2901
1d5a2b54 2902static void hotkey_wakeup_reason_notify_change(void)
50ebec09 2903{
0d922e3b
HMH		 2904 sysfs_notify(&tpacpi_pdev->dev.kobj, NULL,
2905 "wakeup_reason");
50ebec09
HMH		 2906}
2907
2908/* sysfs wakeup hotunplug_complete (pollable) -------------------------- */
a713b4d7
HMH		 2909static ssize_t hotkey_wakeup_hotunplug_complete_show(struct device *dev,
2910 struct device_attribute *attr,
2911 char *buf)
2912{
2913 return snprintf(buf, PAGE_SIZE, "%d\n", hotkey_autosleep_ack);
2914}
2915
2916static struct device_attribute dev_attr_hotkey_wakeup_hotunplug_complete =
2917 __ATTR(wakeup_hotunplug_complete, S_IRUGO,
2918 hotkey_wakeup_hotunplug_complete_show, NULL);
2919
1d5a2b54 2920static void hotkey_wakeup_hotunplug_complete_notify_change(void)
50ebec09 2921{
0d922e3b
HMH		 2922 sysfs_notify(&tpacpi_pdev->dev.kobj, NULL,
2923 "wakeup_hotunplug_complete");
50ebec09
HMH		 2924}
2925
a0416420
HMH		 2926/* --------------------------------------------------------------------- */
2927
ff80f137
HMH		 2928static struct attribute *hotkey_attributes[] __initdata = {
2929 &dev_attr_hotkey_enable.attr,
01e88f25 2930 &dev_attr_hotkey_bios_enabled.attr,
0d922e3b 2931 &dev_attr_hotkey_bios_mask.attr,
ff80f137 2932 &dev_attr_hotkey_report_mode.attr,
0d922e3b
HMH		 2933 &dev_attr_hotkey_wakeup_reason.attr,
2934 &dev_attr_hotkey_wakeup_hotunplug_complete.attr,
01e88f25
HMH		 2935 &dev_attr_hotkey_mask.attr,
2936 &dev_attr_hotkey_all_mask.attr,
2937 &dev_attr_hotkey_recommended_mask.attr,
0d922e3b 2938#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
01e88f25
HMH		 2939 &dev_attr_hotkey_source_mask.attr,
2940 &dev_attr_hotkey_poll_freq.attr,
2941#endif
ff80f137
HMH		 2942};
2943
19d337df
JB		 2944/*
2945 * Sync both the hw and sw blocking state of all switches
2946 */
733e27c1
HMH		 2947static void tpacpi_send_radiosw_update(void)
2948{
2949 int wlsw;
2950
19d337df
JB		 2951 /*
2952 * We must sync all rfkill controllers *before* issuing any
2953 * rfkill input events, or we will race the rfkill core input
2954 * handler.
2955 *
2956 * tpacpi_inputdev_send_mutex works as a syncronization point
2957 * for the above.
2958 *
2959 * We optimize to avoid numerous calls to hotkey_get_wlsw.
2960 */
2961
2962 wlsw = hotkey_get_wlsw();
2963
2964 /* Sync hw blocking state first if it is hw-blocked */
2965 if (wlsw == TPACPI_RFK_RADIO_OFF)
2966 tpacpi_rfk_update_hwblock_state(true);
0e74dc26 2967
19d337df
JB		 2968 /* Sync sw blocking state */
2969 tpacpi_rfk_update_swstate_all();
2970
2971 /* Sync hw blocking state last if it is hw-unblocked */
2972 if (wlsw == TPACPI_RFK_RADIO_ON)
2973 tpacpi_rfk_update_hwblock_state(false);
2974
2975 /* Issue rfkill input event for WLSW switch */
2976 if (!(wlsw < 0)) {
733e27c1
HMH		 2977 mutex_lock(&tpacpi_inputdev_send_mutex);
2978
2979 input_report_switch(tpacpi_inputdev,
19d337df 2980 SW_RFKILL_ALL, (wlsw > 0));
733e27c1
HMH		 2981 input_sync(tpacpi_inputdev);
2982
2983 mutex_unlock(&tpacpi_inputdev_send_mutex);
2984 }
19d337df
JB		 2985
2986 /*
2987 * this can be unconditional, as we will poll state again
2988 * if userspace uses the notify to read data
2989 */
733e27c1
HMH		 2990 hotkey_radio_sw_notify_change();
2991}
2992
9c0a76e1
HMH		 2993static void hotkey_exit(void)
2994{
2995#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
db25f16d 2996 mutex_lock(&hotkey_mutex);
9c0a76e1 2997 hotkey_poll_stop_sync();
db25f16d 2998 mutex_unlock(&hotkey_mutex);
9c0a76e1
HMH		 2999#endif
3000
3001 if (hotkey_dev_attributes)
3002 delete_attr_set(hotkey_dev_attributes, &tpacpi_pdev->dev.kobj);
3003
3004 kfree(hotkey_keycode_map);
3005
4be73005 3006 dbg_printk(TPACPI_DBG_EXIT | TPACPI_DBG_HKEY,
0d922e3b
HMH		 3007 "restoring original HKEY status and mask\n");
3008 /* yes, there is a bitwise or below, we want the
3009 * functions to be called even if one of them fail */
3010 if (((tp_features.hotkey_mask &&
3011 hotkey_mask_set(hotkey_orig_mask)) |
3012 hotkey_status_set(false)) != 0)
4be73005
HMH		 3013 printk(TPACPI_ERR
3014 "failed to restore hot key mask "
3015 "to BIOS defaults\n");
9c0a76e1
HMH		 3016}
3017
de4c8cc7
HMH		 3018static void __init hotkey_unmap(const unsigned int scancode)
3019{
3020 if (hotkey_keycode_map[scancode] != KEY_RESERVED) {
3021 clear_bit(hotkey_keycode_map[scancode],
3022 tpacpi_inputdev->keybit);
3023 hotkey_keycode_map[scancode] = KEY_RESERVED;
3024 }
3025}
3026
0d922e3b
HMH		 3027/*
3028 * HKEY quirks:
3029 * TPACPI_HK_Q_INIMASK: Supports FN+F3,FN+F4,FN+F12
3030 */
3031
3032#define TPACPI_HK_Q_INIMASK 0x0001
3033
3034static const struct tpacpi_quirk tpacpi_hotkey_qtable[] __initconst = {
3035 TPACPI_Q_IBM('I', 'H', TPACPI_HK_Q_INIMASK), /* 600E */
3036 TPACPI_Q_IBM('I', 'N', TPACPI_HK_Q_INIMASK), /* 600E */
3037 TPACPI_Q_IBM('I', 'D', TPACPI_HK_Q_INIMASK), /* 770, 770E, 770ED */
3038 TPACPI_Q_IBM('I', 'W', TPACPI_HK_Q_INIMASK), /* A20m */
3039 TPACPI_Q_IBM('I', 'V', TPACPI_HK_Q_INIMASK), /* A20p */
3040 TPACPI_Q_IBM('1', '0', TPACPI_HK_Q_INIMASK), /* A21e, A22e */
3041 TPACPI_Q_IBM('K', 'U', TPACPI_HK_Q_INIMASK), /* A21e */
3042 TPACPI_Q_IBM('K', 'X', TPACPI_HK_Q_INIMASK), /* A21m, A22m */
3043 TPACPI_Q_IBM('K', 'Y', TPACPI_HK_Q_INIMASK), /* A21p, A22p */
3044 TPACPI_Q_IBM('1', 'B', TPACPI_HK_Q_INIMASK), /* A22e */
3045 TPACPI_Q_IBM('1', '3', TPACPI_HK_Q_INIMASK), /* A22m */
3046 TPACPI_Q_IBM('1', 'E', TPACPI_HK_Q_INIMASK), /* A30/p (0) */
3047 TPACPI_Q_IBM('1', 'C', TPACPI_HK_Q_INIMASK), /* R30 */
3048 TPACPI_Q_IBM('1', 'F', TPACPI_HK_Q_INIMASK), /* R31 */
3049 TPACPI_Q_IBM('I', 'Y', TPACPI_HK_Q_INIMASK), /* T20 */
3050 TPACPI_Q_IBM('K', 'Z', TPACPI_HK_Q_INIMASK), /* T21 */
3051 TPACPI_Q_IBM('1', '6', TPACPI_HK_Q_INIMASK), /* T22 */
3052 TPACPI_Q_IBM('I', 'Z', TPACPI_HK_Q_INIMASK), /* X20, X21 */
3053 TPACPI_Q_IBM('1', 'D', TPACPI_HK_Q_INIMASK), /* X22, X23, X24 */
3054};
3055
a5763f22 3056static int __init hotkey_init(struct ibm_init_struct *iibm)
56b6aeb0 3057{
0f089147
HMH		 3058 /* Requirements for changing the default keymaps:
3059 *
3060 * 1. Many of the keys are mapped to KEY_RESERVED for very
3061 * good reasons. Do not change them unless you have deep
3062 * knowledge on the IBM and Lenovo ThinkPad firmware for
3063 * the various ThinkPad models. The driver behaves
3064 * differently for KEY_RESERVED: such keys have their
3065 * hot key mask *unset* in mask_recommended, and also
3066 * in the initial hot key mask programmed into the
3067 * firmware at driver load time, which means the firm-
3068 * ware may react very differently if you change them to
3069 * something else;
3070 *
3071 * 2. You must be subscribed to the linux-thinkpad and
3072 * ibm-acpi-devel mailing lists, and you should read the
3073 * list archives since 2007 if you want to change the
3074 * keymaps. This requirement exists so that you will
3075 * know the past history of problems with the thinkpad-
3076 * acpi driver keymaps, and also that you will be
3077 * listening to any bug reports;
3078 *
3079 * 3. Do not send thinkpad-acpi specific patches directly to
3080 * for merging, *ever*. Send them to the linux-acpi
3081 * mailinglist for comments. Merging is to be done only
3082 * through acpi-test and the ACPI maintainer.
3083 *
3084 * If the above is too much to ask, don't change the keymap.
3085 * Ask the thinkpad-acpi maintainer to do it, instead.
3086 */
edf0e0e5
HMH		 3087 static u16 ibm_keycode_map[] __initdata = {
3088 /* Scan Codes 0x00 to 0x0B: ACPI HKEY FN+F1..F12 */
3089 KEY_FN_F1, KEY_FN_F2, KEY_COFFEE, KEY_SLEEP,
3090 KEY_WLAN, KEY_FN_F6, KEY_SWITCHVIDEOMODE, KEY_FN_F8,
3091 KEY_FN_F9, KEY_FN_F10, KEY_FN_F11, KEY_SUSPEND,
0f089147
HMH		 3092
3093 /* Scan codes 0x0C to 0x1F: Other ACPI HKEY hot keys */
edf0e0e5
HMH		 3094 KEY_UNKNOWN, /* 0x0C: FN+BACKSPACE */
3095 KEY_UNKNOWN, /* 0x0D: FN+INSERT */
3096 KEY_UNKNOWN, /* 0x0E: FN+DELETE */
0f089147 3097
0d922e3b 3098 /* brightness: firmware always reacts to them */
e927c08d 3099 KEY_RESERVED, /* 0x0F: FN+HOME (brightness up) */
e927c08d 3100 KEY_RESERVED, /* 0x10: FN+END (brightness down) */
0f089147
HMH		 3101
3102 /* Thinklight: firmware always react to it */
edf0e0e5 3103 KEY_RESERVED, /* 0x11: FN+PGUP (thinklight toggle) */
0f089147 3104
edf0e0e5
HMH		 3105 KEY_UNKNOWN, /* 0x12: FN+PGDOWN */
3106 KEY_ZOOM, /* 0x13: FN+SPACE (zoom) */
0f089147
HMH		 3107
3108 /* Volume: firmware always react to it and reprograms
3109 * the built-in *extra* mixer. Never map it to control
3110 * another mixer by default. */
e927c08d
HMH		 3111 KEY_RESERVED, /* 0x14: VOLUME UP */
3112 KEY_RESERVED, /* 0x15: VOLUME DOWN */
3113 KEY_RESERVED, /* 0x16: MUTE */
0f089147 3114
edf0e0e5 3115 KEY_VENDOR, /* 0x17: Thinkpad/AccessIBM/Lenovo */
0f089147 3116
edf0e0e5
HMH		 3117 /* (assignments unknown, please report if found) */
3118 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN,
3119 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN,
3120 };
3121 static u16 lenovo_keycode_map[] __initdata = {
3122 /* Scan Codes 0x00 to 0x0B: ACPI HKEY FN+F1..F12 */
3123 KEY_FN_F1, KEY_COFFEE, KEY_BATTERY, KEY_SLEEP,
3124 KEY_WLAN, KEY_FN_F6, KEY_SWITCHVIDEOMODE, KEY_FN_F8,
3125 KEY_FN_F9, KEY_FN_F10, KEY_FN_F11, KEY_SUSPEND,
0f089147
HMH		 3126
3127 /* Scan codes 0x0C to 0x1F: Other ACPI HKEY hot keys */
edf0e0e5
HMH		 3128 KEY_UNKNOWN, /* 0x0C: FN+BACKSPACE */
3129 KEY_UNKNOWN, /* 0x0D: FN+INSERT */
3130 KEY_UNKNOWN, /* 0x0E: FN+DELETE */
0f089147 3131
de4c8cc7
HMH		 3132 /* These should be enabled --only-- when ACPI video
3133 * is disabled (i.e. in "vendor" mode), and are handled
3134 * in a special way by the init code */
3135 KEY_BRIGHTNESSUP, /* 0x0F: FN+HOME (brightness up) */
3136 KEY_BRIGHTNESSDOWN, /* 0x10: FN+END (brightness down) */
0f089147 3137
edf0e0e5 3138 KEY_RESERVED, /* 0x11: FN+PGUP (thinklight toggle) */
0f089147 3139
edf0e0e5
HMH		 3140 KEY_UNKNOWN, /* 0x12: FN+PGDOWN */
3141 KEY_ZOOM, /* 0x13: FN+SPACE (zoom) */
0f089147
HMH		 3142
3143 /* Volume: z60/z61, T60 (BIOS version?): firmware always
3144 * react to it and reprograms the built-in *extra* mixer.
3145 * Never map it to control another mixer by default.
3146 *
3147 * T60?, T61, R60?, R61: firmware and EC tries to send
3148 * these over the regular keyboard, so these are no-ops,
3149 * but there are still weird bugs re. MUTE, so do not
3150 * change unless you get test reports from all Lenovo
3151 * models. May cause the BIOS to interfere with the
3152 * HDA mixer.
3153 */
e927c08d
HMH		 3154 KEY_RESERVED, /* 0x14: VOLUME UP */
3155 KEY_RESERVED, /* 0x15: VOLUME DOWN */
3156 KEY_RESERVED, /* 0x16: MUTE */
0f089147 3157
edf0e0e5 3158 KEY_VENDOR, /* 0x17: Thinkpad/AccessIBM/Lenovo */
0f089147 3159
edf0e0e5
HMH		 3160 /* (assignments unknown, please report if found) */
3161 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN,
3162 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN,
3163 };
3164
3165#define TPACPI_HOTKEY_MAP_LEN ARRAY_SIZE(ibm_keycode_map)
3166#define TPACPI_HOTKEY_MAP_SIZE sizeof(ibm_keycode_map)
3167#define TPACPI_HOTKEY_MAP_TYPESIZE sizeof(ibm_keycode_map[0])
3168
6a38abbf 3169 int res, i;
74941a69 3170 int status;
1b6521dc 3171 int hkeyv;
d89a727a
HMH		 3172 bool radiosw_state = false;
3173 bool tabletsw_state = false;
b86c4722 3174
0d922e3b
HMH		 3175 unsigned long quirks;
3176
56e2c200
HMH		 3177 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY,
3178 "initializing hotkey subdriver\n");
fe08bc4b 3179
6a38abbf 3180 BUG_ON(!tpacpi_inputdev);
01e88f25
HMH		 3181 BUG_ON(tpacpi_inputdev->open != NULL ||
3182 tpacpi_inputdev->close != NULL);
6a38abbf 3183
e0c7dfe7 3184 TPACPI_ACPIHANDLE_INIT(hkey);
40ca9fdf 3185 mutex_init(&hotkey_mutex);
5fba344c 3186
01e88f25
HMH		 3187#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
3188 mutex_init(&hotkey_thread_mutex);
3189 mutex_init(&hotkey_thread_data_mutex);
3190#endif
3191
56b6aeb0 3192 /* hotkey not supported on 570 */
d8fd94d9 3193 tp_features.hotkey = hkey_handle != NULL;
56b6aeb0 3194
56e2c200
HMH		 3195 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY,
3196 "hotkeys are %s\n",
d8fd94d9 3197 str_supported(tp_features.hotkey));
fe08bc4b 3198
9c0a76e1
HMH		 3199 if (!tp_features.hotkey)
3200 return 1;
a0416420 3201
0d922e3b
HMH		 3202 quirks = tpacpi_check_quirks(tpacpi_hotkey_qtable,
3203 ARRAY_SIZE(tpacpi_hotkey_qtable));
3204
d64c81c4
HMH		 3205 tpacpi_disable_brightness_delay();
3206
0d922e3b
HMH		 3207 /* MUST have enough space for all attributes to be added to
3208 * hotkey_dev_attributes */
3209 hotkey_dev_attributes = create_attr_set(
3210 ARRAY_SIZE(hotkey_attributes) + 2,
3211 NULL);
9c0a76e1
HMH		 3212 if (!hotkey_dev_attributes)
3213 return -ENOMEM;
3214 res = add_many_to_attr_set(hotkey_dev_attributes,
3215 hotkey_attributes,
3216 ARRAY_SIZE(hotkey_attributes));
3217 if (res)
3218 goto err_exit;
3219
0d922e3b 3220 /* mask not supported on 600e/x, 770e, 770x, A21e, A2xm/p,
9c0a76e1
HMH		 3221 A30, R30, R31, T20-22, X20-21, X22-24. Detected by checking
3222 for HKEY interface version 0x100 */
3223 if (acpi_evalf(hkey_handle, &hkeyv, "MHKV", "qd")) {
3224 if ((hkeyv >> 8) != 1) {
3225 printk(TPACPI_ERR "unknown version of the "
3226 "HKEY interface: 0x%x\n", hkeyv);
3227 printk(TPACPI_ERR "please report this to %s\n",
3228 TPACPI_MAIL);
3229 } else {
3230 /*
3231 * MHKV 0x100 in A31, R40, R40e,
3232 * T4x, X31, and later
3233 */
56e2c200
HMH		 3234 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY,
3235 "firmware HKEY interface version: 0x%x\n",
3236 hkeyv);
0d922e3b
HMH		 3237
3238 /* Paranoia check AND init hotkey_all_mask */
3239 if (!acpi_evalf(hkey_handle, &hotkey_all_mask,
3240 "MHKA", "qd")) {
3241 printk(TPACPI_ERR
3242 "missing MHKA handler, "
3243 "please report this to %s\n",
3244 TPACPI_MAIL);
3245 /* Fallback: pre-init for FN+F3,F4,F12 */
3246 hotkey_all_mask = 0x080cU;
3247 } else {
3248 tp_features.hotkey_mask = 1;
3249 }
1b6521dc 3250 }
9c0a76e1 3251 }
56b6aeb0 3252
56e2c200
HMH		 3253 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY,
3254 "hotkey masks are %s\n",
9c0a76e1 3255 str_supported(tp_features.hotkey_mask));
fe08bc4b 3256
0d922e3b
HMH		 3257 /* Init hotkey_all_mask if not initialized yet */
3258 if (!tp_features.hotkey_mask && !hotkey_all_mask &&
3259 (quirks & TPACPI_HK_Q_INIMASK))
3260 hotkey_all_mask = 0x080cU; /* FN+F12, FN+F4, FN+F3 */
9b010de5 3261
0d922e3b 3262 /* Init hotkey_acpi_mask and hotkey_orig_mask */
9c0a76e1 3263 if (tp_features.hotkey_mask) {
0d922e3b
HMH		 3264 /* hotkey_source_mask *must* be zero for
3265 * the first hotkey_mask_get to return hotkey_orig_mask */
9c0a76e1
HMH		 3266 res = hotkey_mask_get();
3267 if (res)
3268 goto err_exit;
3269
0d922e3b
HMH		 3270 hotkey_orig_mask = hotkey_acpi_mask;
3271 } else {
3272 hotkey_orig_mask = hotkey_all_mask;
3273 hotkey_acpi_mask = hotkey_all_mask;
9c0a76e1 3274 }
74941a69 3275
a73f3091
HMH		 3276#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
3277 if (dbg_wlswemul) {
3278 tp_features.hotkey_wlsw = 1;
d89a727a 3279 radiosw_state = !!tpacpi_wlsw_emulstate;
a73f3091
HMH		 3280 printk(TPACPI_INFO
3281 "radio switch emulation enabled\n");
3282 } else
3283#endif
9c0a76e1
HMH		 3284 /* Not all thinkpads have a hardware radio switch */
3285 if (acpi_evalf(hkey_handle, &status, "WLSW", "qd")) {
3286 tp_features.hotkey_wlsw = 1;
d89a727a 3287 radiosw_state = !!status;
9c0a76e1
HMH		 3288 printk(TPACPI_INFO
3289 "radio switch found; radios are %s\n",
3290 enabled(status, 0));
3a872080
HMH		 3291 }
3292 if (tp_features.hotkey_wlsw)
9c0a76e1
HMH		 3293 res = add_to_attr_set(hotkey_dev_attributes,
3294 &dev_attr_hotkey_radio_sw.attr);
74941a69 3295
9c0a76e1
HMH		 3296 /* For X41t, X60t, X61t Tablets... */
3297 if (!res && acpi_evalf(hkey_handle, &status, "MHKG", "qd")) {
3298 tp_features.hotkey_tablet = 1;
d89a727a 3299 tabletsw_state = !!(status & TP_HOTKEY_TABLET_MASK);
9c0a76e1
HMH		 3300 printk(TPACPI_INFO
3301 "possible tablet mode switch found; "
3302 "ThinkPad in %s mode\n",
d89a727a 3303 (tabletsw_state) ? "tablet" : "laptop");
9c0a76e1
HMH		 3304 res = add_to_attr_set(hotkey_dev_attributes,
3305 &dev_attr_hotkey_tablet_mode.attr);
3306 }
6c231bd5 3307
9c0a76e1
HMH		 3308 if (!res)
3309 res = register_attr_set_with_sysfs(
3310 hotkey_dev_attributes,
3311 &tpacpi_pdev->dev.kobj);
3312 if (res)
3313 goto err_exit;
6a38abbf 3314
9c0a76e1 3315 /* Set up key map */
edf0e0e5 3316
9c0a76e1
HMH		 3317 hotkey_keycode_map = kmalloc(TPACPI_HOTKEY_MAP_SIZE,
3318 GFP_KERNEL);
3319 if (!hotkey_keycode_map) {
3320 printk(TPACPI_ERR
3321 "failed to allocate memory for key map\n");
3322 res = -ENOMEM;
3323 goto err_exit;
3324 }
edf0e0e5 3325
e28393c0 3326 if (tpacpi_is_lenovo()) {
56e2c200 3327 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY,
9c0a76e1
HMH		 3328 "using Lenovo default hot key map\n");
3329 memcpy(hotkey_keycode_map, &lenovo_keycode_map,
3330 TPACPI_HOTKEY_MAP_SIZE);
3331 } else {
56e2c200 3332 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY,
9c0a76e1
HMH		 3333 "using IBM default hot key map\n");
3334 memcpy(hotkey_keycode_map, &ibm_keycode_map,
3335 TPACPI_HOTKEY_MAP_SIZE);
3336 }
edf0e0e5 3337
792979c8 3338 input_set_capability(tpacpi_inputdev, EV_MSC, MSC_SCAN);
9c0a76e1
HMH		 3339 tpacpi_inputdev->keycodesize = TPACPI_HOTKEY_MAP_TYPESIZE;
3340 tpacpi_inputdev->keycodemax = TPACPI_HOTKEY_MAP_LEN;
3341 tpacpi_inputdev->keycode = hotkey_keycode_map;
3342 for (i = 0; i < TPACPI_HOTKEY_MAP_LEN; i++) {
3343 if (hotkey_keycode_map[i] != KEY_RESERVED) {
792979c8
HMH		 3344 input_set_capability(tpacpi_inputdev, EV_KEY,
3345 hotkey_keycode_map[i]);
9c0a76e1
HMH		 3346 } else {
3347 if (i < sizeof(hotkey_reserved_mask)*8)
3348 hotkey_reserved_mask |= 1 << i;
6a38abbf 3349 }
9c0a76e1 3350 }
6a38abbf 3351
9c0a76e1 3352 if (tp_features.hotkey_wlsw) {
792979c8 3353 input_set_capability(tpacpi_inputdev, EV_SW, SW_RFKILL_ALL);
d89a727a
HMH		 3354 input_report_switch(tpacpi_inputdev,
3355 SW_RFKILL_ALL, radiosw_state);
9c0a76e1
HMH		 3356 }
3357 if (tp_features.hotkey_tablet) {
792979c8 3358 input_set_capability(tpacpi_inputdev, EV_SW, SW_TABLET_MODE);
d89a727a
HMH		 3359 input_report_switch(tpacpi_inputdev,
3360 SW_TABLET_MODE, tabletsw_state);
9c0a76e1 3361 }
5c29d58f 3362
9c0a76e1 3363 /* Do not issue duplicate brightness change events to
77775838
HMH		 3364 * userspace. tpacpi_detect_brightness_capabilities() must have
3365 * been called before this point */
8bf3d4c5 3366 if (tp_features.bright_acpimode && acpi_video_backlight_support()) {
9c0a76e1
HMH		 3367 printk(TPACPI_INFO
3368 "This ThinkPad has standard ACPI backlight "
3369 "brightness control, supported by the ACPI "
3370 "video driver\n");
3371 printk(TPACPI_NOTICE
3372 "Disabling thinkpad-acpi brightness events "
3373 "by default...\n");
3374
de4c8cc7
HMH		 3375 /* Disable brightness up/down on Lenovo thinkpads when
3376 * ACPI is handling them, otherwise it is plain impossible
3377 * for userspace to do something even remotely sane */
9c0a76e1
HMH		 3378 hotkey_reserved_mask |=
3379 (1 << TP_ACPI_HOTKEYSCAN_FNHOME)
3380 | (1 << TP_ACPI_HOTKEYSCAN_FNEND);
de4c8cc7
HMH		 3381 hotkey_unmap(TP_ACPI_HOTKEYSCAN_FNHOME);
3382 hotkey_unmap(TP_ACPI_HOTKEYSCAN_FNEND);
9c0a76e1 3383 }
ff80f137 3384
230d8cf2 3385#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
0d922e3b
HMH		 3386 hotkey_source_mask = TPACPI_HKEY_NVRAM_GOOD_MASK
3387 & ~hotkey_all_mask
3388 & ~hotkey_reserved_mask;
230d8cf2
HMH		 3389
3390 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY,
3391 "hotkey source mask 0x%08x, polling freq %u\n",
3392 hotkey_source_mask, hotkey_poll_freq);
3393#endif
3394
56e2c200
HMH		 3395 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY,
3396 "enabling firmware HKEY event interface...\n");
2586d566 3397 res = hotkey_status_set(true);
9c0a76e1
HMH		 3398 if (res) {
3399 hotkey_exit();
3400 return res;
3401 }
0d922e3b
HMH		 3402 res = hotkey_mask_set(((hotkey_all_mask & ~hotkey_reserved_mask)
3403 | hotkey_driver_mask)
3404 & ~hotkey_source_mask);
9c0a76e1
HMH		 3405 if (res < 0 && res != -ENXIO) {
3406 hotkey_exit();
3407 return res;
3408 }
0d922e3b
HMH		 3409 hotkey_user_mask = (hotkey_acpi_mask | hotkey_source_mask)
3410 & ~hotkey_reserved_mask;
3411 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY,
3412 "initial masks: user=0x%08x, fw=0x%08x, poll=0x%08x\n",
3413 hotkey_user_mask, hotkey_acpi_mask, hotkey_source_mask);
01e88f25 3414
56e2c200
HMH		 3415 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY,
3416 "legacy ibm/hotkey event reporting over procfs %s\n",
9c0a76e1
HMH		 3417 (hotkey_report_mode < 2) ?
3418 "enabled" : "disabled");
01e88f25 3419
9c0a76e1
HMH		 3420 tpacpi_inputdev->open = &hotkey_inputdev_open;
3421 tpacpi_inputdev->close = &hotkey_inputdev_close;
56b6aeb0 3422
db25f16d 3423 hotkey_poll_setup_safe(true);
56b6aeb0 3424
9c0a76e1 3425 return 0;
01e88f25 3426
9c0a76e1
HMH		 3427err_exit:
3428 delete_attr_set(hotkey_dev_attributes, &tpacpi_pdev->dev.kobj);
3429 hotkey_dev_attributes = NULL;
a0416420 3430
9c0a76e1 3431 return (res < 0)? res : 1;
56b6aeb0
HMH		 3432}
3433
3827e7a3
HMH		 3434static bool hotkey_notify_hotkey(const u32 hkey,
3435 bool *send_acpi_ev,
3436 bool *ignore_acpi_ev)
3437{
3438 /* 0x1000-0x1FFF: key presses */
3439 unsigned int scancode = hkey & 0xfff;
3440 *send_acpi_ev = true;
3441 *ignore_acpi_ev = false;
3442
3443 if (scancode > 0 && scancode < 0x21) {
3444 scancode--;
3445 if (!(hotkey_source_mask & (1 << scancode))) {
0d922e3b 3446 tpacpi_input_send_key_masked(scancode);
3827e7a3
HMH		 3447 *send_acpi_ev = false;
3448 } else {
3449 *ignore_acpi_ev = true;
3450 }
3451 return true;
3452 }
3453 return false;
3454}
3455
3456static bool hotkey_notify_wakeup(const u32 hkey,
3457 bool *send_acpi_ev,
3458 bool *ignore_acpi_ev)
3459{
3460 /* 0x2000-0x2FFF: Wakeup reason */
3461 *send_acpi_ev = true;
3462 *ignore_acpi_ev = false;
3463
3464 switch (hkey) {
67bcae6e
HMH		 3465 case TP_HKEY_EV_WKUP_S3_UNDOCK: /* suspend, undock */
3466 case TP_HKEY_EV_WKUP_S4_UNDOCK: /* hibernation, undock */
3827e7a3
HMH		 3467 hotkey_wakeup_reason = TP_ACPI_WAKEUP_UNDOCK;
3468 *ignore_acpi_ev = true;
3469 break;
3470
67bcae6e
HMH		 3471 case TP_HKEY_EV_WKUP_S3_BAYEJ: /* suspend, bay eject */
3472 case TP_HKEY_EV_WKUP_S4_BAYEJ: /* hibernation, bay eject */
3827e7a3
HMH		 3473 hotkey_wakeup_reason = TP_ACPI_WAKEUP_BAYEJ;
3474 *ignore_acpi_ev = true;
3475 break;
3476
67bcae6e
HMH		 3477 case TP_HKEY_EV_WKUP_S3_BATLOW: /* Battery on critical low level/S3 */
3478 case TP_HKEY_EV_WKUP_S4_BATLOW: /* Battery on critical low level/S4 */
106b4e66
HMH		 3479 printk(TPACPI_ALERT
3480 "EMERGENCY WAKEUP: battery almost empty\n");
3481 /* how to auto-heal: */
3482 /* 2313: woke up from S3, go to S4/S5 */
3483 /* 2413: woke up from S4, go to S5 */
3484 break;
3485
3827e7a3
HMH		 3486 default:
3487 return false;
3488 }
3489
3490 if (hotkey_wakeup_reason != TP_ACPI_WAKEUP_NONE) {
3491 printk(TPACPI_INFO
3492 "woke up due to a hot-unplug "
3493 "request...\n");
3494 hotkey_wakeup_reason_notify_change();
3495 }
3496 return true;
3497}
3498
3499static bool hotkey_notify_usrevent(const u32 hkey,
3500 bool *send_acpi_ev,
3501 bool *ignore_acpi_ev)
3502{
3503 /* 0x5000-0x5FFF: human interface helpers */
3504 *send_acpi_ev = true;
3505 *ignore_acpi_ev = false;
3506
3507 switch (hkey) {
67bcae6e
HMH		 3508 case TP_HKEY_EV_PEN_INSERTED: /* X61t: tablet pen inserted into bay */
3509 case TP_HKEY_EV_PEN_REMOVED: /* X61t: tablet pen removed from bay */
3827e7a3
HMH		 3510 return true;
3511
67bcae6e
HMH		 3512 case TP_HKEY_EV_TABLET_TABLET: /* X41t-X61t: tablet mode */
3513 case TP_HKEY_EV_TABLET_NOTEBOOK: /* X41t-X61t: normal mode */
3827e7a3
HMH		 3514 tpacpi_input_send_tabletsw();
3515 hotkey_tablet_mode_notify_change();
3516 *send_acpi_ev = false;
3517 return true;
3518
67bcae6e
HMH		 3519 case TP_HKEY_EV_LID_CLOSE: /* Lid closed */
3520 case TP_HKEY_EV_LID_OPEN: /* Lid opened */
3521 case TP_HKEY_EV_BRGHT_CHANGED: /* brightness changed */
176dd985 3522 /* do not propagate these events */
3827e7a3
HMH		 3523 *ignore_acpi_ev = true;
3524 return true;
3525
3526 default:
3527 return false;
3528 }
3529}
3530
9ebd9e83
HMH		 3531static void thermal_dump_all_sensors(void);
3532
106b4e66
HMH		 3533static bool hotkey_notify_thermal(const u32 hkey,
3534 bool *send_acpi_ev,
3535 bool *ignore_acpi_ev)
3536{
9ebd9e83
HMH		 3537 bool known = true;
3538
106b4e66
HMH		 3539 /* 0x6000-0x6FFF: thermal alarms */
3540 *send_acpi_ev = true;
3541 *ignore_acpi_ev = false;
3542
3543 switch (hkey) {
9ebd9e83
HMH		 3544 case TP_HKEY_EV_THM_TABLE_CHANGED:
3545 printk(TPACPI_INFO
3546 "EC reports that Thermal Table has changed\n");
3547 /* recommended action: do nothing, we don't have
3548 * Lenovo ATM information */
3549 return true;
67bcae6e 3550 case TP_HKEY_EV_ALARM_BAT_HOT:
106b4e66
HMH		 3551 printk(TPACPI_CRIT
3552 "THERMAL ALARM: battery is too hot!\n");
3553 /* recommended action: warn user through gui */
9ebd9e83 3554 break;
67bcae6e 3555 case TP_HKEY_EV_ALARM_BAT_XHOT:
106b4e66
HMH		 3556 printk(TPACPI_ALERT
3557 "THERMAL EMERGENCY: battery is extremely hot!\n");
3558 /* recommended action: immediate sleep/hibernate */
9ebd9e83 3559 break;
67bcae6e 3560 case TP_HKEY_EV_ALARM_SENSOR_HOT:
106b4e66
HMH		 3561 printk(TPACPI_CRIT
3562 "THERMAL ALARM: "
3563 "a sensor reports something is too hot!\n");
3564 /* recommended action: warn user through gui, that */
3565 /* some internal component is too hot */
9ebd9e83 3566 break;
67bcae6e 3567 case TP_HKEY_EV_ALARM_SENSOR_XHOT:
106b4e66
HMH		 3568 printk(TPACPI_ALERT
3569 "THERMAL EMERGENCY: "
3570 "a sensor reports something is extremely hot!\n");
3571 /* recommended action: immediate sleep/hibernate */
9ebd9e83 3572 break;
106b4e66
HMH		 3573 default:
3574 printk(TPACPI_ALERT
3575 "THERMAL ALERT: unknown thermal alarm received\n");
9ebd9e83 3576 known = false;
106b4e66 3577 }
9ebd9e83
HMH		 3578
3579 thermal_dump_all_sensors();
3580
3581 return known;
106b4e66
HMH		 3582}
3583
56b6aeb0
HMH		 3584static void hotkey_notify(struct ibm_struct *ibm, u32 event)
3585{
6a38abbf 3586 u32 hkey;
3827e7a3
HMH		 3587 bool send_acpi_ev;
3588 bool ignore_acpi_ev;
3589 bool known_ev;
3eea123d
HMH		 3590
3591 if (event != 0x80) {
35ff8b9f
HMH		 3592 printk(TPACPI_ERR
3593 "unknown HKEY notification event %d\n", event);
3eea123d 3594 /* forward it to userspace, maybe it knows how to handle it */
35ff8b9f
HMH		 3595 acpi_bus_generate_netlink_event(
3596 ibm->acpi->device->pnp.device_class,
e0b36fc5 3597 dev_name(&ibm->acpi->device->dev),
35ff8b9f 3598 event, 0);
3eea123d
HMH		 3599 return;
3600 }
3601
3602 while (1) {
3603 if (!acpi_evalf(hkey_handle, &hkey, "MHKP", "d")) {
e0c7dfe7 3604 printk(TPACPI_ERR "failed to retrieve HKEY event\n");
3eea123d
HMH		 3605 return;
3606 }
3607
3608 if (hkey == 0) {
3609 /* queue empty */
3610 return;
3611 }
3612
3827e7a3
HMH		 3613 send_acpi_ev = true;
3614 ignore_acpi_ev = false;
56b6aeb0 3615
ff80f137
HMH		 3616 switch (hkey >> 12) {
3617 case 1:
3618 /* 0x1000-0x1FFF: key presses */
3827e7a3
HMH		 3619 known_ev = hotkey_notify_hotkey(hkey, &send_acpi_ev,
3620 &ignore_acpi_ev);
ff80f137 3621 break;
a713b4d7 3622 case 2:
3827e7a3
HMH		 3623 /* 0x2000-0x2FFF: Wakeup reason */
3624 known_ev = hotkey_notify_wakeup(hkey, &send_acpi_ev,
3625 &ignore_acpi_ev);
a713b4d7
HMH		 3626 break;
3627 case 3:
3827e7a3 3628 /* 0x3000-0x3FFF: bay-related wakeups */
bf8b29c8
HMH		 3629 switch (hkey) {
3630 case TP_HKEY_EV_BAYEJ_ACK:
a713b4d7
HMH		 3631 hotkey_autosleep_ack = 1;
3632 printk(TPACPI_INFO
3633 "bay ejected\n");
50ebec09 3634 hotkey_wakeup_hotunplug_complete_notify_change();
3827e7a3 3635 known_ev = true;
bf8b29c8
HMH		 3636 break;
3637 case TP_HKEY_EV_OPTDRV_EJ:
3638 /* FIXME: kick libata if SATA link offline */
3639 known_ev = true;
3640 break;
3641 default:
3827e7a3 3642 known_ev = false;
a713b4d7
HMH		 3643 }
3644 break;
3645 case 4:
3827e7a3 3646 /* 0x4000-0x4FFF: dock-related wakeups */
67bcae6e 3647 if (hkey == TP_HKEY_EV_UNDOCK_ACK) {
a713b4d7
HMH		 3648 hotkey_autosleep_ack = 1;
3649 printk(TPACPI_INFO
3650 "undocked\n");
50ebec09 3651 hotkey_wakeup_hotunplug_complete_notify_change();
3827e7a3 3652 known_ev = true;
a713b4d7 3653 } else {
3827e7a3 3654 known_ev = false;
a713b4d7
HMH		 3655 }
3656 break;
ff80f137 3657 case 5:
d1edb2b5 3658 /* 0x5000-0x5FFF: human interface helpers */
3827e7a3
HMH		 3659 known_ev = hotkey_notify_usrevent(hkey, &send_acpi_ev,
3660 &ignore_acpi_ev);
ff80f137 3661 break;
106b4e66
HMH		 3662 case 6:
3663 /* 0x6000-0x6FFF: thermal alarms */
3664 known_ev = hotkey_notify_thermal(hkey, &send_acpi_ev,
3665 &ignore_acpi_ev);
3666 break;
ff80f137
HMH		 3667 case 7:
3668 /* 0x7000-0x7FFF: misc */
67bcae6e
HMH		 3669 if (tp_features.hotkey_wlsw &&
3670 hkey == TP_HKEY_EV_RFKILL_CHANGED) {
733e27c1 3671 tpacpi_send_radiosw_update();
3b64b51d 3672 send_acpi_ev = 0;
3827e7a3 3673 known_ev = true;
6a38abbf 3674 break;
6a38abbf 3675 }
ff80f137
HMH		 3676 /* fallthrough to default */
3677 default:
3827e7a3 3678 known_ev = false;
3b64b51d 3679 }
3827e7a3 3680 if (!known_ev) {
35ff8b9f
HMH		 3681 printk(TPACPI_NOTICE
3682 "unhandled HKEY event 0x%04x\n", hkey);
cb429358
HMH		 3683 printk(TPACPI_NOTICE
3684 "please report the conditions when this "
3685 "event happened to %s\n", TPACPI_MAIL);
6a38abbf 3686 }
ff80f137 3687
3eea123d 3688 /* Legacy events */
35ff8b9f
HMH		 3689 if (!ignore_acpi_ev &&
3690 (send_acpi_ev || hotkey_report_mode < 2)) {
3691 acpi_bus_generate_proc_event(ibm->acpi->device,
3692 event, hkey);
3e5ce914 3693 }
ff80f137 3694
3eea123d 3695 /* netlink events */
3e5ce914 3696 if (!ignore_acpi_ev && send_acpi_ev) {
35ff8b9f
HMH		 3697 acpi_bus_generate_netlink_event(
3698 ibm->acpi->device->pnp.device_class,
e0b36fc5 3699 dev_name(&ibm->acpi->device->dev),
35ff8b9f 3700 event, hkey);
3eea123d 3701 }
56b6aeb0
HMH		 3702 }
3703}
3704
a713b4d7
HMH		 3705static void hotkey_suspend(pm_message_t state)
3706{
3707 /* Do these on suspend, we get the events on early resume! */
3708 hotkey_wakeup_reason = TP_ACPI_WAKEUP_NONE;
3709 hotkey_autosleep_ack = 0;
3710}
3711
5c29d58f
HMH		 3712static void hotkey_resume(void)
3713{
d64c81c4
HMH		 3714 tpacpi_disable_brightness_delay();
3715
0d922e3b
HMH		 3716 if (hotkey_status_set(true) < 0 ||
3717 hotkey_mask_set(hotkey_acpi_mask) < 0)
35ff8b9f 3718 printk(TPACPI_ERR
0d922e3b
HMH		 3719 "error while attempting to reset the event "
3720 "firmware interface\n");
3721
733e27c1 3722 tpacpi_send_radiosw_update();
6c231bd5 3723 hotkey_tablet_mode_notify_change();
50ebec09
HMH		 3724 hotkey_wakeup_reason_notify_change();
3725 hotkey_wakeup_hotunplug_complete_notify_change();
db25f16d 3726 hotkey_poll_setup_safe(false);
5c29d58f
HMH		 3727}
3728
a0416420 3729/* procfs -------------------------------------------------------------- */
887965e6 3730static int hotkey_read(struct seq_file *m)
1da177e4 3731{
ae92bd17 3732 int res, status;
1da177e4 3733
d8fd94d9 3734 if (!tp_features.hotkey) {
887965e6
AD		 3735 seq_printf(m, "status:\t\tnot supported\n");
3736 return 0;
78f81cc4
BD		 3737 }
3738
7646ea88 3739 if (mutex_lock_killable(&hotkey_mutex))
fc589a3c 3740 return -ERESTARTSYS;
b2c985e7
HMH		 3741 res = hotkey_status_get(&status);
3742 if (!res)
3743 res = hotkey_mask_get();
40ca9fdf 3744 mutex_unlock(&hotkey_mutex);
b86c4722
HMH		 3745 if (res)
3746 return res;
1da177e4 3747
887965e6 3748 seq_printf(m, "status:\t\t%s\n", enabled(status, 0));
0d922e3b 3749 if (hotkey_all_mask) {
887965e6
AD		 3750 seq_printf(m, "mask:\t\t0x%08x\n", hotkey_user_mask);
3751 seq_printf(m, "commands:\tenable, disable, reset, <mask>\n");
1da177e4 3752 } else {
887965e6
AD		 3753 seq_printf(m, "mask:\t\tnot supported\n");
3754 seq_printf(m, "commands:\tenable, disable, reset\n");
1da177e4
LT		 3755 }
3756
887965e6 3757 return 0;
1da177e4
LT		 3758}
3759
406e988b 3760static void hotkey_enabledisable_warn(bool enable)
2586d566
HMH		 3761{
3762 tpacpi_log_usertask("procfs hotkey enable/disable");
406e988b
HMH		 3763 if (!WARN((tpacpi_lifecycle == TPACPI_LIFE_RUNNING || !enable),
3764 TPACPI_WARN
3765 "hotkey enable/disable functionality has been "
3766 "removed from the driver. Hotkeys are always "
3767 "enabled\n"))
3768 printk(TPACPI_ERR
3769 "Please remove the hotkey=enable module "
3770 "parameter, it is deprecated. Hotkeys are always "
3771 "enabled\n");
2586d566
HMH		 3772}
3773
78f81cc4 3774static int hotkey_write(char *buf)
1da177e4 3775{
2586d566 3776 int res;
ae92bd17 3777 u32 mask;
1da177e4 3778 char *cmd;
1da177e4 3779
d8fd94d9 3780 if (!tp_features.hotkey)
1da177e4
LT		 3781 return -ENODEV;
3782
7646ea88 3783 if (mutex_lock_killable(&hotkey_mutex))
fc589a3c 3784 return -ERESTARTSYS;
40ca9fdf 3785
0d922e3b 3786 mask = hotkey_user_mask;
78f81cc4 3787
40ca9fdf 3788 res = 0;
1da177e4
LT		 3789 while ((cmd = next_cmd(&buf))) {
3790 if (strlencmp(cmd, "enable") == 0) {
406e988b 3791 hotkey_enabledisable_warn(1);
1da177e4 3792 } else if (strlencmp(cmd, "disable") == 0) {
406e988b 3793 hotkey_enabledisable_warn(0);
2586d566 3794 res = -EPERM;
1da177e4 3795 } else if (strlencmp(cmd, "reset") == 0) {
20c9aa46
HMH		 3796 mask = (hotkey_all_mask | hotkey_source_mask)
3797 & ~hotkey_reserved_mask;
1da177e4
LT		 3798 } else if (sscanf(cmd, "0x%x", &mask) == 1) {
3799 /* mask set */
3800 } else if (sscanf(cmd, "%x", &mask) == 1) {
3801 /* mask set */
40ca9fdf
HMH		 3802 } else {
3803 res = -EINVAL;
3804 goto errexit;
3805 }
1da177e4 3806 }
56e2c200 3807
0d922e3b 3808 if (!res) {
56e2c200
HMH		 3809 tpacpi_disclose_usertask("procfs hotkey",
3810 "set mask to 0x%08x\n", mask);
0d922e3b
HMH		 3811 res = hotkey_user_mask_set(mask);
3812 }
1da177e4 3813
40ca9fdf
HMH		 3814errexit:
3815 mutex_unlock(&hotkey_mutex);
3816 return res;
78f81cc4 3817}
1da177e4 3818
1ba90e3a 3819static const struct acpi_device_id ibm_htk_device_ids[] = {
e0c7dfe7 3820 {TPACPI_ACPI_HKEY_HID, 0},
1ba90e3a
TR		 3821 {"", 0},
3822};
3823
8d376cd6 3824static struct tp_acpi_drv_struct ibm_hotkey_acpidriver = {
1ba90e3a 3825 .hid = ibm_htk_device_ids,
8d376cd6
HMH		 3826 .notify = hotkey_notify,
3827 .handle = &hkey_handle,
3828 .type = ACPI_DEVICE_NOTIFY,
3829};
3830
a5763f22
HMH		 3831static struct ibm_struct hotkey_driver_data = {
3832 .name = "hotkey",
a5763f22
HMH		 3833 .read = hotkey_read,
3834 .write = hotkey_write,
3835 .exit = hotkey_exit,
5c29d58f 3836 .resume = hotkey_resume,
a713b4d7 3837 .suspend = hotkey_suspend,
8d376cd6 3838 .acpi = &ibm_hotkey_acpidriver,
a5763f22
HMH		 3839};
3840
56b6aeb0
HMH		 3841/*************************************************************************
3842 * Bluetooth subdriver
3843 */
1da177e4 3844
f74a27d4
HMH		 3845enum {
3846 /* ACPI GBDC/SBDC bits */
3847 TP_ACPI_BLUETOOTH_HWPRESENT = 0x01, /* Bluetooth hw available */
3848 TP_ACPI_BLUETOOTH_RADIOSSW = 0x02, /* Bluetooth radio enabled */
153f8220 3849 TP_ACPI_BLUETOOTH_RESUMECTRL = 0x04, /* Bluetooth state at resume:
08fedfc9 3850 0 = disable, 1 = enable */
153f8220
HMH		 3851};
3852
3853enum {
3854 /* ACPI \BLTH commands */
3855 TP_ACPI_BLTH_GET_ULTRAPORT_ID = 0x00, /* Get Ultraport BT ID */
3856 TP_ACPI_BLTH_GET_PWR_ON_RESUME = 0x01, /* Get power-on-resume state */
3857 TP_ACPI_BLTH_PWR_ON_ON_RESUME = 0x02, /* Resume powered on */
3858 TP_ACPI_BLTH_PWR_OFF_ON_RESUME = 0x03, /* Resume powered off */
3859 TP_ACPI_BLTH_SAVE_STATE = 0x05, /* Save state for S4/S5 */
f74a27d4
HMH		 3860};
3861
bee4cd9b
HMH		 3862#define TPACPI_RFK_BLUETOOTH_SW_NAME "tpacpi_bluetooth_sw"
3863
19d337df 3864static int bluetooth_get_status(void)
07431ec8
HMH		 3865{
3866 int status;
3867
a73f3091
HMH		 3868#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
3869 if (dbg_bluetoothemul)
3870 return (tpacpi_bluetooth_emulstate) ?
19d337df 3871 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF;
a73f3091
HMH		 3872#endif
3873
07431ec8
HMH		 3874 if (!acpi_evalf(hkey_handle, &status, "GBDC", "d"))
3875 return -EIO;
3876
0e74dc26 3877 return ((status & TP_ACPI_BLUETOOTH_RADIOSSW) != 0) ?
19d337df 3878 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF;
07431ec8
HMH		 3879}
3880
19d337df 3881static int bluetooth_set_status(enum tpacpi_rfkill_state state)
0e74dc26
HMH		 3882{
3883 int status;
3884
bee4cd9b 3885 vdbg_printk(TPACPI_DBG_RFKILL,
19d337df
JB		 3886 "will attempt to %s bluetooth\n",
3887 (state == TPACPI_RFK_RADIO_ON) ? "enable" : "disable");
bee4cd9b 3888
a73f3091
HMH		 3889#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
3890 if (dbg_bluetoothemul) {
19d337df 3891 tpacpi_bluetooth_emulstate = (state == TPACPI_RFK_RADIO_ON);
a73f3091
HMH		 3892 return 0;
3893 }
3894#endif
3895
19d337df 3896 if (state == TPACPI_RFK_RADIO_ON)
08fedfc9
HMH		 3897 status = TP_ACPI_BLUETOOTH_RADIOSSW
3898 | TP_ACPI_BLUETOOTH_RESUMECTRL;
3899 else
3900 status = 0;
19d337df 3901
07431ec8
HMH		 3902 if (!acpi_evalf(hkey_handle, NULL, "SBDC", "vd", status))
3903 return -EIO;
3904
3905 return 0;
3906}
f74a27d4 3907
d3a6ade4
HMH		 3908/* sysfs bluetooth enable ---------------------------------------------- */
3909static ssize_t bluetooth_enable_show(struct device *dev,
3910 struct device_attribute *attr,
3911 char *buf)
3912{
19d337df
JB		 3913 return tpacpi_rfk_sysfs_enable_show(TPACPI_RFK_BLUETOOTH_SW_ID,
3914 attr, buf);
d3a6ade4
HMH		 3915}
3916
3917static ssize_t bluetooth_enable_store(struct device *dev,
3918 struct device_attribute *attr,
3919 const char *buf, size_t count)
3920{
19d337df
JB		 3921 return tpacpi_rfk_sysfs_enable_store(TPACPI_RFK_BLUETOOTH_SW_ID,
3922 attr, buf, count);
d3a6ade4
HMH		 3923}
3924
3925static struct device_attribute dev_attr_bluetooth_enable =
cc4c24e1 3926 __ATTR(bluetooth_enable, S_IWUSR | S_IRUGO,
d3a6ade4
HMH		 3927 bluetooth_enable_show, bluetooth_enable_store);
3928
3929/* --------------------------------------------------------------------- */
3930
3931static struct attribute *bluetooth_attributes[] = {
3932 &dev_attr_bluetooth_enable.attr,
3933 NULL
3934};
3935
3936static const struct attribute_group bluetooth_attr_group = {
d3a6ade4
HMH		 3937 .attrs = bluetooth_attributes,
3938};
3939
19d337df
JB		 3940static const struct tpacpi_rfk_ops bluetooth_tprfk_ops = {
3941 .get_status = bluetooth_get_status,
3942 .set_status = bluetooth_set_status,
3943};
0e74dc26 3944
90d9d3c7
HMH		 3945static void bluetooth_shutdown(void)
3946{
3947 /* Order firmware to save current state to NVRAM */
3948 if (!acpi_evalf(NULL, NULL, "\\BLTH", "vd",
3949 TP_ACPI_BLTH_SAVE_STATE))
3950 printk(TPACPI_NOTICE
3951 "failed to save bluetooth state to NVRAM\n");
bee4cd9b
HMH		 3952 else
3953 vdbg_printk(TPACPI_DBG_RFKILL,
3954 "bluestooth state saved to NVRAM\n");
90d9d3c7
HMH		 3955}
3956
07431ec8
HMH		 3957static void bluetooth_exit(void)
3958{
3959 sysfs_remove_group(&tpacpi_pdev->dev.kobj,
3960 &bluetooth_attr_group);
19d337df
JB		 3961
3962 tpacpi_destroy_rfkill(TPACPI_RFK_BLUETOOTH_SW_ID);
3963
3964 bluetooth_shutdown();
07431ec8
HMH		 3965}
3966
a5763f22 3967static int __init bluetooth_init(struct ibm_init_struct *iibm)
1da177e4 3968{
d3a6ade4 3969 int res;
d6fdd1e9
HMH		 3970 int status = 0;
3971
bee4cd9b
HMH		 3972 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL,
3973 "initializing bluetooth subdriver\n");
fe08bc4b 3974
e0c7dfe7 3975 TPACPI_ACPIHANDLE_INIT(hkey);
5fba344c 3976
78f81cc4
BD		 3977 /* bluetooth not supported on 570, 600e/x, 770e, 770x, A21e, A2xm/p,
3978 G4x, R30, R31, R40e, R50e, T20-22, X20-21 */
d8fd94d9 3979 tp_features.bluetooth = hkey_handle &&
d6fdd1e9
HMH		 3980 acpi_evalf(hkey_handle, &status, "GBDC", "qd");
3981
bee4cd9b
HMH		 3982 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL,
3983 "bluetooth is %s, status 0x%02x\n",
d6fdd1e9
HMH		 3984 str_supported(tp_features.bluetooth),
3985 status);
3986
a73f3091
HMH		 3987#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
3988 if (dbg_bluetoothemul) {
3989 tp_features.bluetooth = 1;
3990 printk(TPACPI_INFO
3991 "bluetooth switch emulation enabled\n");
3992 } else
3993#endif
3a872080
HMH		 3994 if (tp_features.bluetooth &&
3995 !(status & TP_ACPI_BLUETOOTH_HWPRESENT)) {
3996 /* no bluetooth hardware present in system */
3997 tp_features.bluetooth = 0;
bee4cd9b 3998 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL,
3a872080
HMH		 3999 "bluetooth hardware not installed\n");
4000 }
4001
0e74dc26
HMH		 4002 if (!tp_features.bluetooth)
4003 return 1;
4004
0e74dc26 4005 res = tpacpi_new_rfkill(TPACPI_RFK_BLUETOOTH_SW_ID,
19d337df 4006 &bluetooth_tprfk_ops,
0e74dc26 4007 RFKILL_TYPE_BLUETOOTH,
bee4cd9b 4008 TPACPI_RFK_BLUETOOTH_SW_NAME,
19d337df
JB		 4009 true);
4010 if (res)
4011 return res;
4012
4013 res = sysfs_create_group(&tpacpi_pdev->dev.kobj,
4014 &bluetooth_attr_group);
0e74dc26 4015 if (res) {
19d337df 4016 tpacpi_destroy_rfkill(TPACPI_RFK_BLUETOOTH_SW_ID);
0e74dc26 4017 return res;
d6fdd1e9 4018 }
fe08bc4b 4019
0e74dc26 4020 return 0;
1da177e4
LT		 4021}
4022
d3a6ade4 4023/* procfs -------------------------------------------------------------- */
887965e6 4024static int bluetooth_read(struct seq_file *m)
1da177e4 4025{
887965e6 4026 return tpacpi_rfk_procfs_read(TPACPI_RFK_BLUETOOTH_SW_ID, m);
1da177e4
LT		 4027}
4028
78f81cc4 4029static int bluetooth_write(char *buf)
1da177e4 4030{
19d337df 4031 return tpacpi_rfk_procfs_write(TPACPI_RFK_BLUETOOTH_SW_ID, buf);
1da177e4
LT		 4032}
4033
a5763f22
HMH		 4034static struct ibm_struct bluetooth_driver_data = {
4035 .name = "bluetooth",
4036 .read = bluetooth_read,
4037 .write = bluetooth_write,
d3a6ade4 4038 .exit = bluetooth_exit,
90d9d3c7 4039 .shutdown = bluetooth_shutdown,
a5763f22
HMH		 4040};
4041
56b6aeb0
HMH		 4042/*************************************************************************
4043 * Wan subdriver
4044 */
4045
f74a27d4
HMH		 4046enum {
4047 /* ACPI GWAN/SWAN bits */
4048 TP_ACPI_WANCARD_HWPRESENT = 0x01, /* Wan hw available */
4049 TP_ACPI_WANCARD_RADIOSSW = 0x02, /* Wan radio enabled */
153f8220 4050 TP_ACPI_WANCARD_RESUMECTRL = 0x04, /* Wan state at resume:
08fedfc9 4051 0 = disable, 1 = enable */
f74a27d4
HMH		 4052};
4053
bee4cd9b
HMH		 4054#define TPACPI_RFK_WWAN_SW_NAME "tpacpi_wwan_sw"
4055
19d337df 4056static int wan_get_status(void)
07431ec8
HMH		 4057{
4058 int status;
4059
a73f3091
HMH		 4060#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
4061 if (dbg_wwanemul)
4062 return (tpacpi_wwan_emulstate) ?
19d337df 4063 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF;
a73f3091
HMH		 4064#endif
4065
07431ec8
HMH		 4066 if (!acpi_evalf(hkey_handle, &status, "GWAN", "d"))
4067 return -EIO;
4068
0e74dc26 4069 return ((status & TP_ACPI_WANCARD_RADIOSSW) != 0) ?
19d337df 4070 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF;
0e74dc26
HMH		 4071}
4072
19d337df 4073static int wan_set_status(enum tpacpi_rfkill_state state)
07431ec8
HMH		 4074{
4075 int status;
4076
bee4cd9b 4077 vdbg_printk(TPACPI_DBG_RFKILL,
19d337df
JB		 4078 "will attempt to %s wwan\n",
4079 (state == TPACPI_RFK_RADIO_ON) ? "enable" : "disable");
bee4cd9b 4080
a73f3091
HMH		 4081#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
4082 if (dbg_wwanemul) {
19d337df 4083 tpacpi_wwan_emulstate = (state == TPACPI_RFK_RADIO_ON);
a73f3091
HMH		 4084 return 0;
4085 }
4086#endif
4087
19d337df 4088 if (state == TPACPI_RFK_RADIO_ON)
08fedfc9
HMH		 4089 status = TP_ACPI_WANCARD_RADIOSSW
4090 | TP_ACPI_WANCARD_RESUMECTRL;
4091 else
4092 status = 0;
19d337df 4093
07431ec8
HMH		 4094 if (!acpi_evalf(hkey_handle, NULL, "SWAN", "vd", status))
4095 return -EIO;
4096
4097 return 0;
4098}
f74a27d4 4099
d3a6ade4
HMH		 4100/* sysfs wan enable ---------------------------------------------------- */
4101static ssize_t wan_enable_show(struct device *dev,
4102 struct device_attribute *attr,
4103 char *buf)
4104{
19d337df
JB		 4105 return tpacpi_rfk_sysfs_enable_show(TPACPI_RFK_WWAN_SW_ID,
4106 attr, buf);
d3a6ade4
HMH		 4107}
4108
4109static ssize_t wan_enable_store(struct device *dev,
4110 struct device_attribute *attr,
4111 const char *buf, size_t count)
4112{
19d337df
JB		 4113 return tpacpi_rfk_sysfs_enable_store(TPACPI_RFK_WWAN_SW_ID,
4114 attr, buf, count);
d3a6ade4
HMH		 4115}
4116
4117static struct device_attribute dev_attr_wan_enable =
cc4c24e1 4118 __ATTR(wwan_enable, S_IWUSR | S_IRUGO,
d3a6ade4
HMH		 4119 wan_enable_show, wan_enable_store);
4120
4121/* --------------------------------------------------------------------- */
4122
4123static struct attribute *wan_attributes[] = {
4124 &dev_attr_wan_enable.attr,
4125 NULL
4126};
4127
4128static const struct attribute_group wan_attr_group = {
d3a6ade4
HMH		 4129 .attrs = wan_attributes,
4130};
4131
19d337df
JB		 4132static const struct tpacpi_rfk_ops wan_tprfk_ops = {
4133 .get_status = wan_get_status,
4134 .set_status = wan_set_status,
4135};
0e74dc26 4136
90d9d3c7
HMH		 4137static void wan_shutdown(void)
4138{
4139 /* Order firmware to save current state to NVRAM */
4140 if (!acpi_evalf(NULL, NULL, "\\WGSV", "vd",
4141 TP_ACPI_WGSV_SAVE_STATE))
4142 printk(TPACPI_NOTICE
4143 "failed to save WWAN state to NVRAM\n");
bee4cd9b
HMH		 4144 else
4145 vdbg_printk(TPACPI_DBG_RFKILL,
4146 "WWAN state saved to NVRAM\n");
90d9d3c7
HMH		 4147}
4148
07431ec8
HMH		 4149static void wan_exit(void)
4150{
4151 sysfs_remove_group(&tpacpi_pdev->dev.kobj,
4152 &wan_attr_group);
19d337df
JB		 4153
4154 tpacpi_destroy_rfkill(TPACPI_RFK_WWAN_SW_ID);
4155
4156 wan_shutdown();
07431ec8
HMH		 4157}
4158
a5763f22 4159static int __init wan_init(struct ibm_init_struct *iibm)
42adb53c 4160{
d3a6ade4 4161 int res;
d6fdd1e9
HMH		 4162 int status = 0;
4163
bee4cd9b
HMH		 4164 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL,
4165 "initializing wan subdriver\n");
fe08bc4b 4166
e0c7dfe7 4167 TPACPI_ACPIHANDLE_INIT(hkey);
5fba344c 4168
d8fd94d9 4169 tp_features.wan = hkey_handle &&
d6fdd1e9
HMH		 4170 acpi_evalf(hkey_handle, &status, "GWAN", "qd");
4171
bee4cd9b
HMH		 4172 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL,
4173 "wan is %s, status 0x%02x\n",
d6fdd1e9
HMH		 4174 str_supported(tp_features.wan),
4175 status);
4176
a73f3091
HMH		 4177#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
4178 if (dbg_wwanemul) {
4179 tp_features.wan = 1;
4180 printk(TPACPI_INFO
4181 "wwan switch emulation enabled\n");
4182 } else
4183#endif
3a872080
HMH		 4184 if (tp_features.wan &&
4185 !(status & TP_ACPI_WANCARD_HWPRESENT)) {
4186 /* no wan hardware present in system */
4187 tp_features.wan = 0;
bee4cd9b 4188 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL,
3a872080
HMH		 4189 "wan hardware not installed\n");
4190 }
4191
0e74dc26
HMH		 4192 if (!tp_features.wan)
4193 return 1;
4194
0e74dc26 4195 res = tpacpi_new_rfkill(TPACPI_RFK_WWAN_SW_ID,
19d337df 4196 &wan_tprfk_ops,
0e74dc26 4197 RFKILL_TYPE_WWAN,
bee4cd9b 4198 TPACPI_RFK_WWAN_SW_NAME,
19d337df
JB		 4199 true);
4200 if (res)
4201 return res;
4202
4203 res = sysfs_create_group(&tpacpi_pdev->dev.kobj,
4204 &wan_attr_group);
4205
0e74dc26 4206 if (res) {
19d337df 4207 tpacpi_destroy_rfkill(TPACPI_RFK_WWAN_SW_ID);
0e74dc26 4208 return res;
d6fdd1e9 4209 }
fe08bc4b 4210
0e74dc26 4211 return 0;
42adb53c
JF		 4212}
4213
d3a6ade4 4214/* procfs -------------------------------------------------------------- */
887965e6 4215static int wan_read(struct seq_file *m)
42adb53c 4216{
887965e6 4217 return tpacpi_rfk_procfs_read(TPACPI_RFK_WWAN_SW_ID, m);
42adb53c
JF		 4218}
4219
4220static int wan_write(char *buf)
4221{
19d337df 4222 return tpacpi_rfk_procfs_write(TPACPI_RFK_WWAN_SW_ID, buf);
42adb53c
JF		 4223}
4224
a5763f22
HMH		 4225static struct ibm_struct wan_driver_data = {
4226 .name = "wan",
4227 .read = wan_read,
4228 .write = wan_write,
d3a6ade4 4229 .exit = wan_exit,
90d9d3c7 4230 .shutdown = wan_shutdown,
a5763f22
HMH		 4231};
4232
0045c0aa
HMH		 4233/*************************************************************************
4234 * UWB subdriver
4235 */
4236
4237enum {
4238 /* ACPI GUWB/SUWB bits */
4239 TP_ACPI_UWB_HWPRESENT = 0x01, /* UWB hw available */
4240 TP_ACPI_UWB_RADIOSSW = 0x02, /* UWB radio enabled */
4241};
4242
bee4cd9b
HMH		 4243#define TPACPI_RFK_UWB_SW_NAME "tpacpi_uwb_sw"
4244
19d337df 4245static int uwb_get_status(void)
0045c0aa
HMH		 4246{
4247 int status;
4248
0045c0aa
HMH		 4249#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
4250 if (dbg_uwbemul)
4251 return (tpacpi_uwb_emulstate) ?
19d337df 4252 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF;
0045c0aa
HMH		 4253#endif
4254
4255 if (!acpi_evalf(hkey_handle, &status, "GUWB", "d"))
4256 return -EIO;
4257
4258 return ((status & TP_ACPI_UWB_RADIOSSW) != 0) ?
19d337df 4259 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF;
0045c0aa
HMH		 4260}
4261
19d337df 4262static int uwb_set_status(enum tpacpi_rfkill_state state)
0045c0aa
HMH		 4263{
4264 int status;
4265
bee4cd9b 4266 vdbg_printk(TPACPI_DBG_RFKILL,
19d337df
JB		 4267 "will attempt to %s UWB\n",
4268 (state == TPACPI_RFK_RADIO_ON) ? "enable" : "disable");
bee4cd9b 4269
0045c0aa
HMH		 4270#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
4271 if (dbg_uwbemul) {
19d337df 4272 tpacpi_uwb_emulstate = (state == TPACPI_RFK_RADIO_ON);
0045c0aa
HMH		 4273 return 0;
4274 }
4275#endif
4276
19d337df
JB		 4277 if (state == TPACPI_RFK_RADIO_ON)
4278 status = TP_ACPI_UWB_RADIOSSW;
4279 else
4280 status = 0;
4281
0045c0aa
HMH		 4282 if (!acpi_evalf(hkey_handle, NULL, "SUWB", "vd", status))
4283 return -EIO;
4284
0045c0aa
HMH		 4285 return 0;
4286}
4287
4288/* --------------------------------------------------------------------- */
4289
19d337df
JB		 4290static const struct tpacpi_rfk_ops uwb_tprfk_ops = {
4291 .get_status = uwb_get_status,
4292 .set_status = uwb_set_status,
4293};
0045c0aa
HMH		 4294
4295static void uwb_exit(void)
4296{
19d337df 4297 tpacpi_destroy_rfkill(TPACPI_RFK_UWB_SW_ID);
0045c0aa
HMH		 4298}
4299
4300static int __init uwb_init(struct ibm_init_struct *iibm)
4301{
4302 int res;
4303 int status = 0;
4304
bee4cd9b
HMH		 4305 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL,
4306 "initializing uwb subdriver\n");
0045c0aa
HMH		 4307
4308 TPACPI_ACPIHANDLE_INIT(hkey);
4309
4310 tp_features.uwb = hkey_handle &&
4311 acpi_evalf(hkey_handle, &status, "GUWB", "qd");
4312
bee4cd9b
HMH		 4313 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL,
4314 "uwb is %s, status 0x%02x\n",
0045c0aa
HMH		 4315 str_supported(tp_features.uwb),
4316 status);
4317
4318#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
4319 if (dbg_uwbemul) {
4320 tp_features.uwb = 1;
4321 printk(TPACPI_INFO
4322 "uwb switch emulation enabled\n");
4323 } else
4324#endif
4325 if (tp_features.uwb &&
4326 !(status & TP_ACPI_UWB_HWPRESENT)) {
4327 /* no uwb hardware present in system */
4328 tp_features.uwb = 0;
4329 dbg_printk(TPACPI_DBG_INIT,
4330 "uwb hardware not installed\n");
4331 }
4332
4333 if (!tp_features.uwb)
4334 return 1;
4335
4336 res = tpacpi_new_rfkill(TPACPI_RFK_UWB_SW_ID,
19d337df 4337 &uwb_tprfk_ops,
0045c0aa 4338 RFKILL_TYPE_UWB,
bee4cd9b 4339 TPACPI_RFK_UWB_SW_NAME,
19d337df 4340 false);
0045c0aa
HMH		 4341 return res;
4342}
4343
4344static struct ibm_struct uwb_driver_data = {
4345 .name = "uwb",
4346 .exit = uwb_exit,
4347 .flags.experimental = 1,
4348};
4349
56b6aeb0
HMH		 4350/*************************************************************************
4351 * Video subdriver
4352 */
4353
d7c1d17d
HMH		 4354#ifdef CONFIG_THINKPAD_ACPI_VIDEO
4355
f74a27d4
HMH		 4356enum video_access_mode {
4357 TPACPI_VIDEO_NONE = 0,
4358 TPACPI_VIDEO_570, /* 570 */
4359 TPACPI_VIDEO_770, /* 600e/x, 770e, 770x */
4360 TPACPI_VIDEO_NEW, /* all others */
4361};
4362
4363enum { /* video status flags, based on VIDEO_570 */
4364 TP_ACPI_VIDEO_S_LCD = 0x01, /* LCD output enabled */
4365 TP_ACPI_VIDEO_S_CRT = 0x02, /* CRT output enabled */
4366 TP_ACPI_VIDEO_S_DVI = 0x08, /* DVI output enabled */
4367};
4368
4369enum { /* TPACPI_VIDEO_570 constants */
4370 TP_ACPI_VIDEO_570_PHSCMD = 0x87, /* unknown magic constant :( */
4371 TP_ACPI_VIDEO_570_PHSMASK = 0x03, /* PHS bits that map to
4372 * video_status_flags */
4373 TP_ACPI_VIDEO_570_PHS2CMD = 0x8b, /* unknown magic constant :( */
4374 TP_ACPI_VIDEO_570_PHS2SET = 0x80, /* unknown magic constant :( */
4375};
4376
9a8e1738
HMH		 4377static enum video_access_mode video_supported;
4378static int video_orig_autosw;
78f81cc4 4379
f74a27d4
HMH		 4380static int video_autosw_get(void);
4381static int video_autosw_set(int enable);
4382
e0c7dfe7 4383TPACPI_HANDLE(vid2, root, "\\_SB.PCI0.AGPB.VID"); /* G41 */
56b6aeb0 4384
a5763f22 4385static int __init video_init(struct ibm_init_struct *iibm)
1da177e4 4386{
78f81cc4
BD		 4387 int ivga;
4388
fe08bc4b
HMH		 4389 vdbg_printk(TPACPI_DBG_INIT, "initializing video subdriver\n");
4390
e0c7dfe7 4391 TPACPI_ACPIHANDLE_INIT(vid);
e28393c0
HMH		 4392 if (tpacpi_is_ibm())
4393 TPACPI_ACPIHANDLE_INIT(vid2);
5fba344c 4394
78f81cc4
BD		 4395 if (vid2_handle && acpi_evalf(NULL, &ivga, "\\IVGA", "d") && ivga)
4396 /* G41, assume IVGA doesn't change */
4397 vid_handle = vid2_handle;
4398
4399 if (!vid_handle)
4400 /* video switching not supported on R30, R31 */
efa27145 4401 video_supported = TPACPI_VIDEO_NONE;
e28393c0
HMH		 4402 else if (tpacpi_is_ibm() &&
4403 acpi_evalf(vid_handle, &video_orig_autosw, "SWIT", "qd"))
78f81cc4 4404 /* 570 */
efa27145 4405 video_supported = TPACPI_VIDEO_570;
e28393c0
HMH		 4406 else if (tpacpi_is_ibm() &&
4407 acpi_evalf(vid_handle, &video_orig_autosw, "^VADL", "qd"))
78f81cc4 4408 /* 600e/x, 770e, 770x */
efa27145 4409 video_supported = TPACPI_VIDEO_770;
78f81cc4
BD		 4410 else
4411 /* all others */
efa27145 4412 video_supported = TPACPI_VIDEO_NEW;
1da177e4 4413
fe08bc4b
HMH		 4414 vdbg_printk(TPACPI_DBG_INIT, "video is %s, mode %d\n",
4415 str_supported(video_supported != TPACPI_VIDEO_NONE),
4416 video_supported);
4417
5fba344c 4418 return (video_supported != TPACPI_VIDEO_NONE)? 0 : 1;
1da177e4
LT		 4419}
4420
56b6aeb0
HMH		 4421static void video_exit(void)
4422{
83f34724
HMH		 4423 dbg_printk(TPACPI_DBG_EXIT,
4424 "restoring original video autoswitch mode\n");
4425 if (video_autosw_set(video_orig_autosw))
e0c7dfe7 4426 printk(TPACPI_ERR "error while trying to restore original "
83f34724 4427 "video autoswitch mode\n");
56b6aeb0
HMH		 4428}
4429
83f34724 4430static int video_outputsw_get(void)
1da177e4
LT		 4431{
4432 int status = 0;
4433 int i;
4434
83f34724
HMH		 4435 switch (video_supported) {
4436 case TPACPI_VIDEO_570:
4437 if (!acpi_evalf(NULL, &i, "\\_SB.PHS", "dd",
4438 TP_ACPI_VIDEO_570_PHSCMD))
4439 return -EIO;
4440 status = i & TP_ACPI_VIDEO_570_PHSMASK;
4441 break;
4442 case TPACPI_VIDEO_770:
4443 if (!acpi_evalf(NULL, &i, "\\VCDL", "d"))
4444 return -EIO;
4445 if (i)
4446 status |= TP_ACPI_VIDEO_S_LCD;
4447 if (!acpi_evalf(NULL, &i, "\\VCDC", "d"))
4448 return -EIO;
4449 if (i)
4450 status |= TP_ACPI_VIDEO_S_CRT;
4451 break;
4452 case TPACPI_VIDEO_NEW:
4453 if (!acpi_evalf(NULL, NULL, "\\VUPS", "vd", 1) ||
4454 !acpi_evalf(NULL, &i, "\\VCDC", "d"))
4455 return -EIO;
4456 if (i)
4457 status |= TP_ACPI_VIDEO_S_CRT;
4458
4459 if (!acpi_evalf(NULL, NULL, "\\VUPS", "vd", 0) ||
4460 !acpi_evalf(NULL, &i, "\\VCDL", "d"))
4461 return -EIO;
4462 if (i)
4463 status |= TP_ACPI_VIDEO_S_LCD;
4464 if (!acpi_evalf(NULL, &i, "\\VCDD", "d"))
4465 return -EIO;
4466 if (i)
4467 status |= TP_ACPI_VIDEO_S_DVI;
4468 break;
4469 default:
4470 return -ENOSYS;
78f81cc4
BD		 4471 }
4472
4473 return status;
4474}
1da177e4 4475
83f34724 4476static int video_outputsw_set(int status)
78f81cc4 4477{
83f34724
HMH		 4478 int autosw;
4479 int res = 0;
4480
4481 switch (video_supported) {
4482 case TPACPI_VIDEO_570:
4483 res = acpi_evalf(NULL, NULL,
4484 "\\_SB.PHS2", "vdd",
4485 TP_ACPI_VIDEO_570_PHS2CMD,
4486 status | TP_ACPI_VIDEO_570_PHS2SET);
4487 break;
4488 case TPACPI_VIDEO_770:
4489 autosw = video_autosw_get();
4490 if (autosw < 0)
4491 return autosw;
1da177e4 4492
83f34724
HMH		 4493 res = video_autosw_set(1);
4494 if (res)
4495 return res;
4496 res = acpi_evalf(vid_handle, NULL,
4497 "ASWT", "vdd", status * 0x100, 0);
4498 if (!autosw && video_autosw_set(autosw)) {
35ff8b9f
HMH		 4499 printk(TPACPI_ERR
4500 "video auto-switch left enabled due to error\n");
83f34724
HMH		 4501 return -EIO;
4502 }
4503 break;
4504 case TPACPI_VIDEO_NEW:
4505 res = acpi_evalf(NULL, NULL, "\\VUPS", "vd", 0x80) &&
35ff8b9f 4506 acpi_evalf(NULL, NULL, "\\VSDS", "vdd", status, 1);
83f34724
HMH		 4507 break;
4508 default:
4509 return -ENOSYS;
4510 }
1da177e4 4511
83f34724 4512 return (res)? 0 : -EIO;
1da177e4
LT		 4513}
4514
83f34724 4515static int video_autosw_get(void)
78f81cc4 4516{
83f34724 4517 int autosw = 0;
78f81cc4 4518
83f34724
HMH		 4519 switch (video_supported) {
4520 case TPACPI_VIDEO_570:
4521 if (!acpi_evalf(vid_handle, &autosw, "SWIT", "d"))
4522 return -EIO;
4523 break;
4524 case TPACPI_VIDEO_770:
4525 case TPACPI_VIDEO_NEW:
4526 if (!acpi_evalf(vid_handle, &autosw, "^VDEE", "d"))
4527 return -EIO;
4528 break;
4529 default:
4530 return -ENOSYS;
4531 }
78f81cc4 4532
83f34724 4533 return autosw & 1;
78f81cc4
BD		 4534}
4535
83f34724 4536static int video_autosw_set(int enable)
78f81cc4 4537{
83f34724
HMH		 4538 if (!acpi_evalf(vid_handle, NULL, "_DOS", "vd", (enable)? 1 : 0))
4539 return -EIO;
4540 return 0;
78f81cc4
BD		 4541}
4542
83f34724 4543static int video_outputsw_cycle(void)
78f81cc4 4544{
83f34724
HMH		 4545 int autosw = video_autosw_get();
4546 int res;
78f81cc4 4547
83f34724
HMH		 4548 if (autosw < 0)
4549 return autosw;
78f81cc4 4550
83f34724
HMH		 4551 switch (video_supported) {
4552 case TPACPI_VIDEO_570:
4553 res = video_autosw_set(1);
4554 if (res)
4555 return res;
4556 res = acpi_evalf(ec_handle, NULL, "_Q16", "v");
4557 break;
4558 case TPACPI_VIDEO_770:
4559 case TPACPI_VIDEO_NEW:
4560 res = video_autosw_set(1);
4561 if (res)
4562 return res;
4563 res = acpi_evalf(vid_handle, NULL, "VSWT", "v");
4564 break;
4565 default:
4566 return -ENOSYS;
4567 }
4568 if (!autosw && video_autosw_set(autosw)) {
35ff8b9f
HMH		 4569 printk(TPACPI_ERR
4570 "video auto-switch left enabled due to error\n");
83f34724 4571 return -EIO;
78f81cc4
BD		 4572 }
4573
83f34724
HMH		 4574 return (res)? 0 : -EIO;
4575}
4576
4577static int video_expand_toggle(void)
4578{
4579 switch (video_supported) {
4580 case TPACPI_VIDEO_570:
4581 return acpi_evalf(ec_handle, NULL, "_Q17", "v")?
4582 0 : -EIO;
4583 case TPACPI_VIDEO_770:
4584 return acpi_evalf(vid_handle, NULL, "VEXP", "v")?
4585 0 : -EIO;
4586 case TPACPI_VIDEO_NEW:
4587 return acpi_evalf(NULL, NULL, "\\VEXP", "v")?
4588 0 : -EIO;
4589 default:
4590 return -ENOSYS;
4591 }
4592 /* not reached */
78f81cc4
BD		 4593}
4594
887965e6 4595static int video_read(struct seq_file *m)
56b6aeb0 4596{
83f34724 4597 int status, autosw;
56b6aeb0 4598
83f34724 4599 if (video_supported == TPACPI_VIDEO_NONE) {
887965e6
AD		 4600 seq_printf(m, "status:\t\tnot supported\n");
4601 return 0;
56b6aeb0
HMH		 4602 }
4603
b525c06c
HMH		 4604 /* Even reads can crash X.org, so... */
4605 if (!capable(CAP_SYS_ADMIN))
4606 return -EPERM;
4607
83f34724
HMH		 4608 status = video_outputsw_get();
4609 if (status < 0)
4610 return status;
4611
4612 autosw = video_autosw_get();
4613 if (autosw < 0)
4614 return autosw;
4615
887965e6
AD		 4616 seq_printf(m, "status:\t\tsupported\n");
4617 seq_printf(m, "lcd:\t\t%s\n", enabled(status, 0));
4618 seq_printf(m, "crt:\t\t%s\n", enabled(status, 1));
efa27145 4619 if (video_supported == TPACPI_VIDEO_NEW)
887965e6
AD		 4620 seq_printf(m, "dvi:\t\t%s\n", enabled(status, 3));
4621 seq_printf(m, "auto:\t\t%s\n", enabled(autosw, 0));
4622 seq_printf(m, "commands:\tlcd_enable, lcd_disable\n");
4623 seq_printf(m, "commands:\tcrt_enable, crt_disable\n");
efa27145 4624 if (video_supported == TPACPI_VIDEO_NEW)
887965e6
AD		 4625 seq_printf(m, "commands:\tdvi_enable, dvi_disable\n");
4626 seq_printf(m, "commands:\tauto_enable, auto_disable\n");
4627 seq_printf(m, "commands:\tvideo_switch, expand_toggle\n");
56b6aeb0 4628
887965e6 4629 return 0;
56b6aeb0
HMH		 4630}
4631
78f81cc4 4632static int video_write(char *buf)
1da177e4
LT		 4633{
4634 char *cmd;
4635 int enable, disable, status;
83f34724 4636 int res;
1da177e4 4637
83f34724 4638 if (video_supported == TPACPI_VIDEO_NONE)
78f81cc4
BD		 4639 return -ENODEV;
4640
b525c06c
HMH		 4641 /* Even reads can crash X.org, let alone writes... */
4642 if (!capable(CAP_SYS_ADMIN))
4643 return -EPERM;
4644
83f34724
HMH		 4645 enable = 0;
4646 disable = 0;
1da177e4
LT		 4647
4648 while ((cmd = next_cmd(&buf))) {
4649 if (strlencmp(cmd, "lcd_enable") == 0) {
83f34724 4650 enable |= TP_ACPI_VIDEO_S_LCD;
1da177e4 4651 } else if (strlencmp(cmd, "lcd_disable") == 0) {
83f34724 4652 disable |= TP_ACPI_VIDEO_S_LCD;
1da177e4 4653 } else if (strlencmp(cmd, "crt_enable") == 0) {
83f34724 4654 enable |= TP_ACPI_VIDEO_S_CRT;
1da177e4 4655 } else if (strlencmp(cmd, "crt_disable") == 0) {
83f34724 4656 disable |= TP_ACPI_VIDEO_S_CRT;
efa27145 4657 } else if (video_supported == TPACPI_VIDEO_NEW &&
78f81cc4 4658 strlencmp(cmd, "dvi_enable") == 0) {
83f34724 4659 enable |= TP_ACPI_VIDEO_S_DVI;
efa27145 4660 } else if (video_supported == TPACPI_VIDEO_NEW &&
78f81cc4 4661 strlencmp(cmd, "dvi_disable") == 0) {
83f34724 4662 disable |= TP_ACPI_VIDEO_S_DVI;
1da177e4 4663 } else if (strlencmp(cmd, "auto_enable") == 0) {
83f34724
HMH		 4664 res = video_autosw_set(1);
4665 if (res)
4666 return res;
1da177e4 4667 } else if (strlencmp(cmd, "auto_disable") == 0) {
83f34724
HMH		 4668 res = video_autosw_set(0);
4669 if (res)
4670 return res;
1da177e4 4671 } else if (strlencmp(cmd, "video_switch") == 0) {
83f34724
HMH		 4672 res = video_outputsw_cycle();
4673 if (res)
4674 return res;
1da177e4 4675 } else if (strlencmp(cmd, "expand_toggle") == 0) {
83f34724
HMH		 4676 res = video_expand_toggle();
4677 if (res)
4678 return res;
1da177e4
LT		 4679 } else
4680 return -EINVAL;
4681 }
4682
4683 if (enable || disable) {
83f34724
HMH		 4684 status = video_outputsw_get();
4685 if (status < 0)
4686 return status;
4687 res = video_outputsw_set((status & ~disable) | enable);
4688 if (res)
4689 return res;
1da177e4
LT		 4690 }
4691
4692 return 0;
4693}
4694
a5763f22
HMH		 4695static struct ibm_struct video_driver_data = {
4696 .name = "video",
4697 .read = video_read,
4698 .write = video_write,
4699 .exit = video_exit,
4700};
4701
d7c1d17d
HMH		 4702#endif /* CONFIG_THINKPAD_ACPI_VIDEO */
4703
56b6aeb0
HMH		 4704/*************************************************************************
4705 * Light (thinklight) subdriver
4706 */
1da177e4 4707
e0c7dfe7
HMH		 4708TPACPI_HANDLE(lght, root, "\\LGHT"); /* A21e, A2xm/p, T20-22, X20-21 */
4709TPACPI_HANDLE(ledb, ec, "LEDB"); /* G4x */
56b6aeb0 4710
4fa6811b
HMH		 4711static int light_get_status(void)
4712{
4713 int status = 0;
4714
4715 if (tp_features.light_status) {
4716 if (!acpi_evalf(ec_handle, &status, "KBLT", "d"))
4717 return -EIO;
4718 return (!!status);
4719 }
4720
4721 return -ENXIO;
4722}
4723
4724static int light_set_status(int status)
4725{
4726 int rc;
4727
4728 if (tp_features.light) {
4729 if (cmos_handle) {
4730 rc = acpi_evalf(cmos_handle, NULL, NULL, "vd",
4731 (status)?
4732 TP_CMOS_THINKLIGHT_ON :
4733 TP_CMOS_THINKLIGHT_OFF);
4734 } else {
4735 rc = acpi_evalf(lght_handle, NULL, NULL, "vd",
4736 (status)? 1 : 0);
4737 }
4738 return (rc)? 0 : -EIO;
4739 }
4740
4741 return -ENXIO;
4742}
4743
e306501d
HMH		 4744static void light_set_status_worker(struct work_struct *work)
4745{
4746 struct tpacpi_led_classdev *data =
4747 container_of(work, struct tpacpi_led_classdev, work);
4748
4749 if (likely(tpacpi_lifecycle == TPACPI_LIFE_RUNNING))
75bd3bf2 4750 light_set_status((data->new_state != TPACPI_LED_OFF));
e306501d
HMH		 4751}
4752
4753static void light_sysfs_set(struct led_classdev *led_cdev,
4754 enum led_brightness brightness)
4755{
4756 struct tpacpi_led_classdev *data =
4757 container_of(led_cdev,
4758 struct tpacpi_led_classdev,
4759 led_classdev);
75bd3bf2
HMH		 4760 data->new_state = (brightness != LED_OFF) ?
4761 TPACPI_LED_ON : TPACPI_LED_OFF;
e0e3c061 4762 queue_work(tpacpi_wq, &data->work);
e306501d
HMH		 4763}
4764
4765static enum led_brightness light_sysfs_get(struct led_classdev *led_cdev)
4766{
4767 return (light_get_status() == 1)? LED_FULL : LED_OFF;
4768}
4769
4770static struct tpacpi_led_classdev tpacpi_led_thinklight = {
4771 .led_classdev = {
4772 .name = "tpacpi::thinklight",
4773 .brightness_set = &light_sysfs_set,
4774 .brightness_get = &light_sysfs_get,
4775 }
4776};
4777
a5763f22 4778static int __init light_init(struct ibm_init_struct *iibm)
1da177e4 4779{
9c0a76e1 4780 int rc;
e306501d 4781
fe08bc4b
HMH		 4782 vdbg_printk(TPACPI_DBG_INIT, "initializing light subdriver\n");
4783
e28393c0
HMH		 4784 if (tpacpi_is_ibm()) {
4785 TPACPI_ACPIHANDLE_INIT(ledb);
4786 TPACPI_ACPIHANDLE_INIT(lght);
4787 }
e0c7dfe7 4788 TPACPI_ACPIHANDLE_INIT(cmos);
e306501d 4789 INIT_WORK(&tpacpi_led_thinklight.work, light_set_status_worker);
5fba344c 4790
78f81cc4 4791 /* light not supported on 570, 600e/x, 770e, 770x, G4x, R30, R31 */
d8fd94d9 4792 tp_features.light = (cmos_handle || lght_handle) && !ledb_handle;
78f81cc4 4793
d8fd94d9 4794 if (tp_features.light)
78f81cc4
BD		 4795 /* light status not supported on
4796 570, 600e/x, 770e, 770x, G4x, R30, R31, R32, X20 */
d8fd94d9
HMH		 4797 tp_features.light_status =
4798 acpi_evalf(ec_handle, NULL, "KBLT", "qv");
1da177e4 4799
9c0a76e1
HMH		 4800 vdbg_printk(TPACPI_DBG_INIT, "light is %s, light status is %s\n",
4801 str_supported(tp_features.light),
4802 str_supported(tp_features.light_status));
fe08bc4b 4803
9c0a76e1
HMH		 4804 if (!tp_features.light)
4805 return 1;
4806
4807 rc = led_classdev_register(&tpacpi_pdev->dev,
4808 &tpacpi_led_thinklight.led_classdev);
e306501d
HMH		 4809
4810 if (rc < 0) {
4811 tp_features.light = 0;
4812 tp_features.light_status = 0;
9c0a76e1
HMH		 4813 } else {
4814 rc = 0;
e306501d 4815 }
9c0a76e1 4816
e306501d
HMH		 4817 return rc;
4818}
4819
4820static void light_exit(void)
4821{
4822 led_classdev_unregister(&tpacpi_led_thinklight.led_classdev);
4823 if (work_pending(&tpacpi_led_thinklight.work))
e0e3c061 4824 flush_workqueue(tpacpi_wq);
1da177e4
LT		 4825}
4826
887965e6 4827static int light_read(struct seq_file *m)
1da177e4 4828{
4fa6811b 4829 int status;
1da177e4 4830
d8fd94d9 4831 if (!tp_features.light) {
887965e6 4832 seq_printf(m, "status:\t\tnot supported\n");
d8fd94d9 4833 } else if (!tp_features.light_status) {
887965e6
AD		 4834 seq_printf(m, "status:\t\tunknown\n");
4835 seq_printf(m, "commands:\ton, off\n");
78f81cc4 4836 } else {
4fa6811b
HMH		 4837 status = light_get_status();
4838 if (status < 0)
4839 return status;
887965e6
AD		 4840 seq_printf(m, "status:\t\t%s\n", onoff(status, 0));
4841 seq_printf(m, "commands:\ton, off\n");
78f81cc4 4842 }
1da177e4 4843
887965e6 4844 return 0;
1da177e4
LT		 4845}
4846
78f81cc4 4847static int light_write(char *buf)
1da177e4 4848{
1da177e4 4849 char *cmd;
4fa6811b 4850 int newstatus = 0;
78f81cc4 4851
d8fd94d9 4852 if (!tp_features.light)
78f81cc4
BD		 4853 return -ENODEV;
4854
1da177e4
LT		 4855 while ((cmd = next_cmd(&buf))) {
4856 if (strlencmp(cmd, "on") == 0) {
4fa6811b 4857 newstatus = 1;
1da177e4 4858 } else if (strlencmp(cmd, "off") == 0) {
4fa6811b 4859 newstatus = 0;
1da177e4
LT		 4860 } else
4861 return -EINVAL;
1da177e4
LT		 4862 }
4863
4fa6811b 4864 return light_set_status(newstatus);
1da177e4
LT		 4865}
4866
a5763f22
HMH		 4867static struct ibm_struct light_driver_data = {
4868 .name = "light",
4869 .read = light_read,
4870 .write = light_write,
e306501d 4871 .exit = light_exit,
a5763f22
HMH		 4872};
4873
56b6aeb0
HMH		 4874/*************************************************************************
4875 * CMOS subdriver
4876 */
4877
b616004c
HMH		 4878/* sysfs cmos_command -------------------------------------------------- */
4879static ssize_t cmos_command_store(struct device *dev,
4880 struct device_attribute *attr,
4881 const char *buf, size_t count)
4882{
4883 unsigned long cmos_cmd;
4884 int res;
4885
4886 if (parse_strtoul(buf, 21, &cmos_cmd))
4887 return -EINVAL;
4888
4889 res = issue_thinkpad_cmos_command(cmos_cmd);
4890 return (res)? res : count;
4891}
4892
4893static struct device_attribute dev_attr_cmos_command =
4894 __ATTR(cmos_command, S_IWUSR, NULL, cmos_command_store);
4895
4896/* --------------------------------------------------------------------- */
4897
a5763f22 4898static int __init cmos_init(struct ibm_init_struct *iibm)
5fba344c 4899{
b616004c
HMH		 4900 int res;
4901
fe08bc4b
HMH		 4902 vdbg_printk(TPACPI_DBG_INIT,
4903 "initializing cmos commands subdriver\n");
4904
e0c7dfe7 4905 TPACPI_ACPIHANDLE_INIT(cmos);
5fba344c 4906
fe08bc4b
HMH		 4907 vdbg_printk(TPACPI_DBG_INIT, "cmos commands are %s\n",
4908 str_supported(cmos_handle != NULL));
b616004c
HMH		 4909
4910 res = device_create_file(&tpacpi_pdev->dev, &dev_attr_cmos_command);
4911 if (res)
4912 return res;
4913
5fba344c
HMH		 4914 return (cmos_handle)? 0 : 1;
4915}
4916
b616004c
HMH		 4917static void cmos_exit(void)
4918{
4919 device_remove_file(&tpacpi_pdev->dev, &dev_attr_cmos_command);
4920}
4921
887965e6 4922static int cmos_read(struct seq_file *m)
1da177e4 4923{
78f81cc4
BD		 4924 /* cmos not supported on 570, 600e/x, 770e, 770x, A21e, A2xm/p,
4925 R30, R31, T20-22, X20-21 */
1da177e4 4926 if (!cmos_handle)
887965e6 4927 seq_printf(m, "status:\t\tnot supported\n");
1da177e4 4928 else {
887965e6
AD		 4929 seq_printf(m, "status:\t\tsupported\n");
4930 seq_printf(m, "commands:\t<cmd> (<cmd> is 0-21)\n");
1da177e4
LT		 4931 }
4932
887965e6 4933 return 0;
1da177e4
LT		 4934}
4935
78f81cc4 4936static int cmos_write(char *buf)
1da177e4
LT		 4937{
4938 char *cmd;
c9bea99c 4939 int cmos_cmd, res;
1da177e4
LT		 4940
4941 while ((cmd = next_cmd(&buf))) {
78f81cc4
BD		 4942 if (sscanf(cmd, "%u", &cmos_cmd) == 1 &&
4943 cmos_cmd >= 0 && cmos_cmd <= 21) {
1da177e4
LT		 4944 /* cmos_cmd set */
4945 } else
4946 return -EINVAL;
4947
c9bea99c
HMH		 4948 res = issue_thinkpad_cmos_command(cmos_cmd);
4949 if (res)
4950 return res;
1da177e4
LT		 4951 }
4952
4953 return 0;
78f81cc4
BD		 4954}
4955
a5763f22
HMH		 4956static struct ibm_struct cmos_driver_data = {
4957 .name = "cmos",
4958 .read = cmos_read,
4959 .write = cmos_write,
b616004c 4960 .exit = cmos_exit,
a5763f22 4961};
56b6aeb0
HMH		 4962
4963/*************************************************************************
4964 * LED subdriver
4965 */
4966
f74a27d4
HMH		 4967enum led_access_mode {
4968 TPACPI_LED_NONE = 0,
4969 TPACPI_LED_570, /* 570 */
4970 TPACPI_LED_OLD, /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20-21 */
4971 TPACPI_LED_NEW, /* all others */
4972};
4973
4974enum { /* For TPACPI_LED_OLD */
4975 TPACPI_LED_EC_HLCL = 0x0c, /* EC reg to get led to power on */
4976 TPACPI_LED_EC_HLBL = 0x0d, /* EC reg to blink a lit led */
4977 TPACPI_LED_EC_HLMS = 0x0e, /* EC reg to select led to command */
4978};
4979
9a8e1738 4980static enum led_access_mode led_supported;
78f81cc4 4981
e0c7dfe7 4982TPACPI_HANDLE(led, ec, "SLED", /* 570 */
35ff8b9f
HMH		 4983 "SYSL", /* 600e/x, 770e, 770x, A21e, A2xm/p, */
4984 /* T20-22, X20-21 */
56b6aeb0
HMH		 4985 "LED", /* all others */
4986 ); /* R30, R31 */
4987
f21179a4 4988#define TPACPI_LED_NUMLEDS 16
af116101
HMH		 4989static struct tpacpi_led_classdev *tpacpi_leds;
4990static enum led_status_t tpacpi_led_state_cache[TPACPI_LED_NUMLEDS];
e3aa51fe 4991static const char * const tpacpi_led_names[TPACPI_LED_NUMLEDS] = {
af116101
HMH		 4992 /* there's a limit of 19 chars + NULL before 2.6.26 */
4993 "tpacpi::power",
4994 "tpacpi:orange:batt",
4995 "tpacpi:green:batt",
4996 "tpacpi::dock_active",
4997 "tpacpi::bay_active",
4998 "tpacpi::dock_batt",
4999 "tpacpi::unknown_led",
5000 "tpacpi::standby",
f21179a4
HMH		 5001 "tpacpi::dock_status1",
5002 "tpacpi::dock_status2",
5003 "tpacpi::unknown_led2",
5004 "tpacpi::unknown_led3",
5005 "tpacpi::thinkvantage",
af116101 5006};
f21179a4 5007#define TPACPI_SAFE_LEDS 0x1081U
a4d5effc
HMH		 5008
5009static inline bool tpacpi_is_led_restricted(const unsigned int led)
5010{
5011#ifdef CONFIG_THINKPAD_ACPI_UNSAFE_LEDS
5012 return false;
5013#else
f21179a4 5014 return (1U & (TPACPI_SAFE_LEDS >> led)) == 0;
a4d5effc
HMH		 5015#endif
5016}
af116101 5017
24e45bbe 5018static int led_get_status(const unsigned int led)
4fa6811b
HMH		 5019{
5020 int status;
af116101 5021 enum led_status_t led_s;
4fa6811b
HMH		 5022
5023 switch (led_supported) {
5024 case TPACPI_LED_570:
5025 if (!acpi_evalf(ec_handle,
5026 &status, "GLED", "dd", 1 << led))
5027 return -EIO;
af116101 5028 led_s = (status == 0)?
4fa6811b
HMH		 5029 TPACPI_LED_OFF :
5030 ((status == 1)?
5031 TPACPI_LED_ON :
5032 TPACPI_LED_BLINK);
af116101
HMH		 5033 tpacpi_led_state_cache[led] = led_s;
5034 return led_s;
4fa6811b
HMH		 5035 default:
5036 return -ENXIO;
5037 }
5038
5039 /* not reached */
5040}
5041
24e45bbe
HMH		 5042static int led_set_status(const unsigned int led,
5043 const enum led_status_t ledstatus)
4fa6811b
HMH		 5044{
5045 /* off, on, blink. Index is led_status_t */
24e45bbe
HMH		 5046 static const unsigned int led_sled_arg1[] = { 0, 1, 3 };
5047 static const unsigned int led_led_arg1[] = { 0, 0x80, 0xc0 };
4fa6811b
HMH		 5048
5049 int rc = 0;
5050
5051 switch (led_supported) {
5052 case TPACPI_LED_570:
24e45bbe 5053 /* 570 */
a4d5effc 5054 if (unlikely(led > 7))
24e45bbe 5055 return -EINVAL;
a4d5effc
HMH		 5056 if (unlikely(tpacpi_is_led_restricted(led)))
5057 return -EPERM;
24e45bbe
HMH		 5058 if (!acpi_evalf(led_handle, NULL, NULL, "vdd",
5059 (1 << led), led_sled_arg1[ledstatus]))
5060 rc = -EIO;
5061 break;
4fa6811b 5062 case TPACPI_LED_OLD:
24e45bbe 5063 /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20 */
a4d5effc 5064 if (unlikely(led > 7))
24e45bbe 5065 return -EINVAL;
a4d5effc
HMH		 5066 if (unlikely(tpacpi_is_led_restricted(led)))
5067 return -EPERM;
24e45bbe
HMH		 5068 rc = ec_write(TPACPI_LED_EC_HLMS, (1 << led));
5069 if (rc >= 0)
5070 rc = ec_write(TPACPI_LED_EC_HLBL,
5071 (ledstatus == TPACPI_LED_BLINK) << led);
5072 if (rc >= 0)
5073 rc = ec_write(TPACPI_LED_EC_HLCL,
5074 (ledstatus != TPACPI_LED_OFF) << led);
5075 break;
4fa6811b 5076 case TPACPI_LED_NEW:
24e45bbe 5077 /* all others */
a4d5effc
HMH		 5078 if (unlikely(led >= TPACPI_LED_NUMLEDS))
5079 return -EINVAL;
5080 if (unlikely(tpacpi_is_led_restricted(led)))
5081 return -EPERM;
24e45bbe
HMH		 5082 if (!acpi_evalf(led_handle, NULL, NULL, "vdd",
5083 led, led_led_arg1[ledstatus]))
5084 rc = -EIO;
5085 break;
4fa6811b
HMH		 5086 default:
5087 rc = -ENXIO;
5088 }
5089
af116101
HMH		 5090 if (!rc)
5091 tpacpi_led_state_cache[led] = ledstatus;
5092
5093 return rc;
5094}
5095
af116101
HMH		 5096static void led_set_status_worker(struct work_struct *work)
5097{
5098 struct tpacpi_led_classdev *data =
5099 container_of(work, struct tpacpi_led_classdev, work);
5100
5101 if (likely(tpacpi_lifecycle == TPACPI_LIFE_RUNNING))
75bd3bf2 5102 led_set_status(data->led, data->new_state);
af116101
HMH		 5103}
5104
5105static void led_sysfs_set(struct led_classdev *led_cdev,
5106 enum led_brightness brightness)
5107{
5108 struct tpacpi_led_classdev *data = container_of(led_cdev,
5109 struct tpacpi_led_classdev, led_classdev);
5110
75bd3bf2
HMH		 5111 if (brightness == LED_OFF)
5112 data->new_state = TPACPI_LED_OFF;
5113 else if (tpacpi_led_state_cache[data->led] != TPACPI_LED_BLINK)
5114 data->new_state = TPACPI_LED_ON;
5115 else
5116 data->new_state = TPACPI_LED_BLINK;
5117
e0e3c061 5118 queue_work(tpacpi_wq, &data->work);
af116101
HMH		 5119}
5120
5121static int led_sysfs_blink_set(struct led_classdev *led_cdev,
5122 unsigned long *delay_on, unsigned long *delay_off)
5123{
5124 struct tpacpi_led_classdev *data = container_of(led_cdev,
5125 struct tpacpi_led_classdev, led_classdev);
5126
5127 /* Can we choose the flash rate? */
5128 if (*delay_on == 0 && *delay_off == 0) {
5129 /* yes. set them to the hardware blink rate (1 Hz) */
5130 *delay_on = 500; /* ms */
5131 *delay_off = 500; /* ms */
5132 } else if ((*delay_on != 500) || (*delay_off != 500))
5133 return -EINVAL;
5134
75bd3bf2 5135 data->new_state = TPACPI_LED_BLINK;
e0e3c061 5136 queue_work(tpacpi_wq, &data->work);
af116101
HMH		 5137
5138 return 0;
5139}
5140
5141static enum led_brightness led_sysfs_get(struct led_classdev *led_cdev)
5142{
5143 int rc;
5144
5145 struct tpacpi_led_classdev *data = container_of(led_cdev,
5146 struct tpacpi_led_classdev, led_classdev);
5147
5148 rc = led_get_status(data->led);
5149
5150 if (rc == TPACPI_LED_OFF || rc < 0)
5151 rc = LED_OFF; /* no error handling in led class :( */
5152 else
5153 rc = LED_FULL;
5154
4fa6811b
HMH		 5155 return rc;
5156}
5157
af116101
HMH		 5158static void led_exit(void)
5159{
5160 unsigned int i;
5161
5162 for (i = 0; i < TPACPI_LED_NUMLEDS; i++) {
5163 if (tpacpi_leds[i].led_classdev.name)
5164 led_classdev_unregister(&tpacpi_leds[i].led_classdev);
5165 }
5166
5167 kfree(tpacpi_leds);
af116101
HMH		 5168}
5169
a4d5effc
HMH		 5170static int __init tpacpi_init_led(unsigned int led)
5171{
5172 int rc;
5173
5174 tpacpi_leds[led].led = led;
5175
f21179a4
HMH		 5176 /* LEDs with no name don't get registered */
5177 if (!tpacpi_led_names[led])
5178 return 0;
5179
a4d5effc
HMH		 5180 tpacpi_leds[led].led_classdev.brightness_set = &led_sysfs_set;
5181 tpacpi_leds[led].led_classdev.blink_set = &led_sysfs_blink_set;
5182 if (led_supported == TPACPI_LED_570)
5183 tpacpi_leds[led].led_classdev.brightness_get =
5184 &led_sysfs_get;
5185
5186 tpacpi_leds[led].led_classdev.name = tpacpi_led_names[led];
5187
5188 INIT_WORK(&tpacpi_leds[led].work, led_set_status_worker);
5189
5190 rc = led_classdev_register(&tpacpi_pdev->dev,
5191 &tpacpi_leds[led].led_classdev);
5192 if (rc < 0)
5193 tpacpi_leds[led].led_classdev.name = NULL;
5194
5195 return rc;
5196}
5197
f21179a4
HMH		 5198static const struct tpacpi_quirk led_useful_qtable[] __initconst = {
5199 TPACPI_Q_IBM('1', 'E', 0x009f), /* A30 */
5200 TPACPI_Q_IBM('1', 'N', 0x009f), /* A31 */
5201 TPACPI_Q_IBM('1', 'G', 0x009f), /* A31 */
5202
5203 TPACPI_Q_IBM('1', 'I', 0x0097), /* T30 */
5204 TPACPI_Q_IBM('1', 'R', 0x0097), /* T40, T41, T42, R50, R51 */
5205 TPACPI_Q_IBM('7', '0', 0x0097), /* T43, R52 */
5206 TPACPI_Q_IBM('1', 'Y', 0x0097), /* T43 */
5207 TPACPI_Q_IBM('1', 'W', 0x0097), /* R50e */
5208 TPACPI_Q_IBM('1', 'V', 0x0097), /* R51 */
5209 TPACPI_Q_IBM('7', '8', 0x0097), /* R51e */
5210 TPACPI_Q_IBM('7', '6', 0x0097), /* R52 */
5211
5212 TPACPI_Q_IBM('1', 'K', 0x00bf), /* X30 */
5213 TPACPI_Q_IBM('1', 'Q', 0x00bf), /* X31, X32 */
5214 TPACPI_Q_IBM('1', 'U', 0x00bf), /* X40 */
5215 TPACPI_Q_IBM('7', '4', 0x00bf), /* X41 */
5216 TPACPI_Q_IBM('7', '5', 0x00bf), /* X41t */
5217
5218 TPACPI_Q_IBM('7', '9', 0x1f97), /* T60 (1) */
5219 TPACPI_Q_IBM('7', '7', 0x1f97), /* Z60* (1) */
5220 TPACPI_Q_IBM('7', 'F', 0x1f97), /* Z61* (1) */
5221 TPACPI_Q_IBM('7', 'B', 0x1fb7), /* X60 (1) */
5222
5223 /* (1) - may have excess leds enabled on MSB */
5224
5225 /* Defaults (order matters, keep last, don't reorder!) */
5226 { /* Lenovo */
5227 .vendor = PCI_VENDOR_ID_LENOVO,
5228 .bios = TPACPI_MATCH_ANY, .ec = TPACPI_MATCH_ANY,
5229 .quirks = 0x1fffU,
5230 },
5231 { /* IBM ThinkPads with no EC version string */
5232 .vendor = PCI_VENDOR_ID_IBM,
5233 .bios = TPACPI_MATCH_ANY, .ec = TPACPI_MATCH_UNKNOWN,
5234 .quirks = 0x00ffU,
5235 },
5236 { /* IBM ThinkPads with EC version string */
5237 .vendor = PCI_VENDOR_ID_IBM,
5238 .bios = TPACPI_MATCH_ANY, .ec = TPACPI_MATCH_ANY,
5239 .quirks = 0x00bfU,
5240 },
5241};
5242
5243#undef TPACPI_LEDQ_IBM
5244#undef TPACPI_LEDQ_LNV
5245
a5763f22 5246static int __init led_init(struct ibm_init_struct *iibm)
78f81cc4 5247{
af116101
HMH		 5248 unsigned int i;
5249 int rc;
f21179a4 5250 unsigned long useful_leds;
af116101 5251
fe08bc4b
HMH		 5252 vdbg_printk(TPACPI_DBG_INIT, "initializing LED subdriver\n");
5253
e0c7dfe7 5254 TPACPI_ACPIHANDLE_INIT(led);
5fba344c 5255
78f81cc4
BD		 5256 if (!led_handle)
5257 /* led not supported on R30, R31 */
efa27145 5258 led_supported = TPACPI_LED_NONE;
e28393c0 5259 else if (tpacpi_is_ibm() && strlencmp(led_path, "SLED") == 0)
78f81cc4 5260 /* 570 */
efa27145 5261 led_supported = TPACPI_LED_570;
e28393c0 5262 else if (tpacpi_is_ibm() && strlencmp(led_path, "SYSL") == 0)
78f81cc4 5263 /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20-21 */
efa27145 5264 led_supported = TPACPI_LED_OLD;
78f81cc4
BD		 5265 else
5266 /* all others */
efa27145 5267 led_supported = TPACPI_LED_NEW;
78f81cc4 5268
fe08bc4b
HMH		 5269 vdbg_printk(TPACPI_DBG_INIT, "LED commands are %s, mode %d\n",
5270 str_supported(led_supported), led_supported);
5271
f21179a4
HMH		 5272 if (led_supported == TPACPI_LED_NONE)
5273 return 1;
5274
af116101
HMH		 5275 tpacpi_leds = kzalloc(sizeof(*tpacpi_leds) * TPACPI_LED_NUMLEDS,
5276 GFP_KERNEL);
5277 if (!tpacpi_leds) {
5278 printk(TPACPI_ERR "Out of memory for LED data\n");
5279 return -ENOMEM;
5280 }
5281
f21179a4
HMH		 5282 useful_leds = tpacpi_check_quirks(led_useful_qtable,
5283 ARRAY_SIZE(led_useful_qtable));
5284
af116101 5285 for (i = 0; i < TPACPI_LED_NUMLEDS; i++) {
f21179a4
HMH		 5286 if (!tpacpi_is_led_restricted(i) &&
5287 test_bit(i, &useful_leds)) {
a4d5effc
HMH		 5288 rc = tpacpi_init_led(i);
5289 if (rc < 0) {
5290 led_exit();
5291 return rc;
5292 }
af116101
HMH		 5293 }
5294 }
5295
a4d5effc 5296#ifdef CONFIG_THINKPAD_ACPI_UNSAFE_LEDS
f21179a4
HMH		 5297 printk(TPACPI_NOTICE
5298 "warning: userspace override of important "
5299 "firmware LEDs is enabled\n");
a4d5effc 5300#endif
f21179a4 5301 return 0;
78f81cc4
BD		 5302}
5303
4fa6811b
HMH		 5304#define str_led_status(s) \
5305 ((s) == TPACPI_LED_OFF ? "off" : \
5306 ((s) == TPACPI_LED_ON ? "on" : "blinking"))
78f81cc4 5307
887965e6 5308static int led_read(struct seq_file *m)
1da177e4 5309{
78f81cc4 5310 if (!led_supported) {
887965e6
AD		 5311 seq_printf(m, "status:\t\tnot supported\n");
5312 return 0;
78f81cc4 5313 }
887965e6 5314 seq_printf(m, "status:\t\tsupported\n");
78f81cc4 5315
efa27145 5316 if (led_supported == TPACPI_LED_570) {
78f81cc4
BD		 5317 /* 570 */
5318 int i, status;
5319 for (i = 0; i < 8; i++) {
4fa6811b
HMH		 5320 status = led_get_status(i);
5321 if (status < 0)
78f81cc4 5322 return -EIO;
887965e6 5323 seq_printf(m, "%d:\t\t%s\n",
4fa6811b 5324 i, str_led_status(status));
78f81cc4
BD		 5325 }
5326 }
5327
887965e6 5328 seq_printf(m, "commands:\t"
f21179a4 5329 "<led> on, <led> off, <led> blink (<led> is 0-15)\n");
1da177e4 5330
887965e6 5331 return 0;
1da177e4
LT		 5332}
5333
78f81cc4 5334static int led_write(char *buf)
1da177e4
LT		 5335{
5336 char *cmd;
4fa6811b
HMH		 5337 int led, rc;
5338 enum led_status_t s;
78f81cc4
BD		 5339
5340 if (!led_supported)
5341 return -ENODEV;
1da177e4
LT		 5342
5343 while ((cmd = next_cmd(&buf))) {
f21179a4 5344 if (sscanf(cmd, "%d", &led) != 1 || led < 0 || led > 15)
1da177e4
LT		 5345 return -EINVAL;
5346
78f81cc4 5347 if (strstr(cmd, "off")) {
4fa6811b 5348 s = TPACPI_LED_OFF;
1da177e4 5349 } else if (strstr(cmd, "on")) {
4fa6811b 5350 s = TPACPI_LED_ON;
78f81cc4 5351 } else if (strstr(cmd, "blink")) {
4fa6811b 5352 s = TPACPI_LED_BLINK;
78f81cc4 5353 } else {
4fa6811b 5354 return -EINVAL;
78f81cc4 5355 }
4fa6811b
HMH		 5356
5357 rc = led_set_status(led, s);
5358 if (rc < 0)
5359 return rc;
78f81cc4
BD		 5360 }
5361
5362 return 0;
5363}
5364
a5763f22
HMH		 5365static struct ibm_struct led_driver_data = {
5366 .name = "led",
5367 .read = led_read,
5368 .write = led_write,
af116101 5369 .exit = led_exit,
a5763f22
HMH		 5370};
5371
56b6aeb0
HMH		 5372/*************************************************************************
5373 * Beep subdriver
5374 */
5375
e0c7dfe7 5376TPACPI_HANDLE(beep, ec, "BEEP"); /* all except R30, R31 */
56b6aeb0 5377
60201732
HMH		 5378#define TPACPI_BEEP_Q1 0x0001
5379
5380static const struct tpacpi_quirk beep_quirk_table[] __initconst = {
5381 TPACPI_Q_IBM('I', 'M', TPACPI_BEEP_Q1), /* 570 */
5382 TPACPI_Q_IBM('I', 'U', TPACPI_BEEP_Q1), /* 570E - unverified */
5383};
5384
a5763f22 5385static int __init beep_init(struct ibm_init_struct *iibm)
5fba344c 5386{
60201732
HMH		 5387 unsigned long quirks;
5388
fe08bc4b
HMH		 5389 vdbg_printk(TPACPI_DBG_INIT, "initializing beep subdriver\n");
5390
e0c7dfe7 5391 TPACPI_ACPIHANDLE_INIT(beep);
5fba344c 5392
fe08bc4b
HMH		 5393 vdbg_printk(TPACPI_DBG_INIT, "beep is %s\n",
5394 str_supported(beep_handle != NULL));
5395
60201732
HMH		 5396 quirks = tpacpi_check_quirks(beep_quirk_table,
5397 ARRAY_SIZE(beep_quirk_table));
5398
5399 tp_features.beep_needs_two_args = !!(quirks & TPACPI_BEEP_Q1);
5400
5fba344c
HMH		 5401 return (beep_handle)? 0 : 1;
5402}
5403
887965e6 5404static int beep_read(struct seq_file *m)
78f81cc4 5405{
78f81cc4 5406 if (!beep_handle)
887965e6 5407 seq_printf(m, "status:\t\tnot supported\n");
78f81cc4 5408 else {
887965e6
AD		 5409 seq_printf(m, "status:\t\tsupported\n");
5410 seq_printf(m, "commands:\t<cmd> (<cmd> is 0-17)\n");
78f81cc4
BD		 5411 }
5412
887965e6 5413 return 0;
78f81cc4
BD		 5414}
5415
5416static int beep_write(char *buf)
5417{
5418 char *cmd;
5419 int beep_cmd;
5420
5421 if (!beep_handle)
5422 return -ENODEV;
5423
5424 while ((cmd = next_cmd(&buf))) {
5425 if (sscanf(cmd, "%u", &beep_cmd) == 1 &&
5426 beep_cmd >= 0 && beep_cmd <= 17) {
5427 /* beep_cmd set */
5428 } else
5429 return -EINVAL;
60201732
HMH		 5430 if (tp_features.beep_needs_two_args) {
5431 if (!acpi_evalf(beep_handle, NULL, NULL, "vdd",
5432 beep_cmd, 0))
5433 return -EIO;
5434 } else {
5435 if (!acpi_evalf(beep_handle, NULL, NULL, "vd",
5436 beep_cmd))
5437 return -EIO;
5438 }
78f81cc4
BD		 5439 }
5440
5441 return 0;
5442}
5443
a5763f22
HMH		 5444static struct ibm_struct beep_driver_data = {
5445 .name = "beep",
5446 .read = beep_read,
5447 .write = beep_write,
5448};
5449
56b6aeb0
HMH		 5450/*************************************************************************
5451 * Thermal subdriver
5452 */
78f81cc4 5453
f74a27d4
HMH		 5454enum thermal_access_mode {
5455 TPACPI_THERMAL_NONE = 0, /* No thermal support */
5456 TPACPI_THERMAL_ACPI_TMP07, /* Use ACPI TMP0-7 */
5457 TPACPI_THERMAL_ACPI_UPDT, /* Use ACPI TMP0-7 with UPDT */
5458 TPACPI_THERMAL_TPEC_8, /* Use ACPI EC regs, 8 sensors */
5459 TPACPI_THERMAL_TPEC_16, /* Use ACPI EC regs, 16 sensors */
5460};
5461
5462enum { /* TPACPI_THERMAL_TPEC_* */
5463 TP_EC_THERMAL_TMP0 = 0x78, /* ACPI EC regs TMP 0..7 */
5464 TP_EC_THERMAL_TMP8 = 0xC0, /* ACPI EC regs TMP 8..15 */
5465 TP_EC_THERMAL_TMP_NA = -128, /* ACPI EC sensor not available */
9ebd9e83
HMH		 5466
5467 TPACPI_THERMAL_SENSOR_NA = -128000, /* Sensor not available */
f74a27d4
HMH		 5468};
5469
9ebd9e83 5470
f74a27d4
HMH		 5471#define TPACPI_MAX_THERMAL_SENSORS 16 /* Max thermal sensors supported */
5472struct ibm_thermal_sensors_struct {
5473 s32 temp[TPACPI_MAX_THERMAL_SENSORS];
5474};
5475
a26f878a 5476static enum thermal_access_mode thermal_read_mode;
78f81cc4 5477
b21a15f6
HMH		 5478/* idx is zero-based */
5479static int thermal_get_sensor(int idx, s32 *value)
5480{
5481 int t;
5482 s8 tmp;
5483 char tmpi[5];
5484
5485 t = TP_EC_THERMAL_TMP0;
5486
5487 switch (thermal_read_mode) {
5488#if TPACPI_MAX_THERMAL_SENSORS >= 16
5489 case TPACPI_THERMAL_TPEC_16:
5490 if (idx >= 8 && idx <= 15) {
5491 t = TP_EC_THERMAL_TMP8;
5492 idx -= 8;
5493 }
5494 /* fallthrough */
5495#endif
5496 case TPACPI_THERMAL_TPEC_8:
5497 if (idx <= 7) {
5498 if (!acpi_ec_read(t + idx, &tmp))
5499 return -EIO;
5500 *value = tmp * 1000;
5501 return 0;
5502 }
5503 break;
5504
5505 case TPACPI_THERMAL_ACPI_UPDT:
5506 if (idx <= 7) {
5507 snprintf(tmpi, sizeof(tmpi), "TMP%c", '0' + idx);
5508 if (!acpi_evalf(ec_handle, NULL, "UPDT", "v"))
5509 return -EIO;
5510 if (!acpi_evalf(ec_handle, &t, tmpi, "d"))
5511 return -EIO;
5512 *value = (t - 2732) * 100;
5513 return 0;
5514 }
5515 break;
5516
5517 case TPACPI_THERMAL_ACPI_TMP07:
5518 if (idx <= 7) {
5519 snprintf(tmpi, sizeof(tmpi), "TMP%c", '0' + idx);
5520 if (!acpi_evalf(ec_handle, &t, tmpi, "d"))
5521 return -EIO;
5522 if (t > 127 || t < -127)
5523 t = TP_EC_THERMAL_TMP_NA;
5524 *value = t * 1000;
5525 return 0;
5526 }
5527 break;
5528
5529 case TPACPI_THERMAL_NONE:
5530 default:
5531 return -ENOSYS;
5532 }
5533
5534 return -EINVAL;
5535}
5536
5537static int thermal_get_sensors(struct ibm_thermal_sensors_struct *s)
5538{
5539 int res, i;
5540 int n;
5541
5542 n = 8;
5543 i = 0;
5544
5545 if (!s)
5546 return -EINVAL;
5547
5548 if (thermal_read_mode == TPACPI_THERMAL_TPEC_16)
5549 n = 16;
5550
35ff8b9f 5551 for (i = 0 ; i < n; i++) {
b21a15f6
HMH		 5552 res = thermal_get_sensor(i, &s->temp[i]);
5553 if (res)
5554 return res;
5555 }
5556
5557 return n;
5558}
f74a27d4 5559
9ebd9e83
HMH		 5560static void thermal_dump_all_sensors(void)
5561{
5562 int n, i;
5563 struct ibm_thermal_sensors_struct t;
5564
5565 n = thermal_get_sensors(&t);
5566 if (n <= 0)
5567 return;
5568
5569 printk(TPACPI_NOTICE
5570 "temperatures (Celsius):");
5571
5572 for (i = 0; i < n; i++) {
5573 if (t.temp[i] != TPACPI_THERMAL_SENSOR_NA)
5574 printk(KERN_CONT " %d", (int)(t.temp[i] / 1000));
5575 else
5576 printk(KERN_CONT " N/A");
5577 }
5578
5579 printk(KERN_CONT "\n");
5580}
5581
2c37aa4e
HMH		 5582/* sysfs temp##_input -------------------------------------------------- */
5583
5584static ssize_t thermal_temp_input_show(struct device *dev,
5585 struct device_attribute *attr,
5586 char *buf)
5587{
5588 struct sensor_device_attribute *sensor_attr =
5589 to_sensor_dev_attr(attr);
5590 int idx = sensor_attr->index;
5591 s32 value;
5592 int res;
5593
5594 res = thermal_get_sensor(idx, &value);
5595 if (res)
5596 return res;
9ebd9e83 5597 if (value == TPACPI_THERMAL_SENSOR_NA)
2c37aa4e
HMH		 5598 return -ENXIO;
5599
5600 return snprintf(buf, PAGE_SIZE, "%d\n", value);
5601}
5602
5603#define THERMAL_SENSOR_ATTR_TEMP(_idxA, _idxB) \
35ff8b9f
HMH		 5604 SENSOR_ATTR(temp##_idxA##_input, S_IRUGO, \
5605 thermal_temp_input_show, NULL, _idxB)
2c37aa4e
HMH		 5606
5607static struct sensor_device_attribute sensor_dev_attr_thermal_temp_input[] = {
5608 THERMAL_SENSOR_ATTR_TEMP(1, 0),
5609 THERMAL_SENSOR_ATTR_TEMP(2, 1),
5610 THERMAL_SENSOR_ATTR_TEMP(3, 2),
5611 THERMAL_SENSOR_ATTR_TEMP(4, 3),
5612 THERMAL_SENSOR_ATTR_TEMP(5, 4),
5613 THERMAL_SENSOR_ATTR_TEMP(6, 5),
5614 THERMAL_SENSOR_ATTR_TEMP(7, 6),
5615 THERMAL_SENSOR_ATTR_TEMP(8, 7),
5616 THERMAL_SENSOR_ATTR_TEMP(9, 8),
5617 THERMAL_SENSOR_ATTR_TEMP(10, 9),
5618 THERMAL_SENSOR_ATTR_TEMP(11, 10),
5619 THERMAL_SENSOR_ATTR_TEMP(12, 11),
5620 THERMAL_SENSOR_ATTR_TEMP(13, 12),
5621 THERMAL_SENSOR_ATTR_TEMP(14, 13),
5622 THERMAL_SENSOR_ATTR_TEMP(15, 14),
5623 THERMAL_SENSOR_ATTR_TEMP(16, 15),
5624};
5625
5626#define THERMAL_ATTRS(X) \
5627 &sensor_dev_attr_thermal_temp_input[X].dev_attr.attr
5628
5629static struct attribute *thermal_temp_input_attr[] = {
5630 THERMAL_ATTRS(8),
5631 THERMAL_ATTRS(9),
5632 THERMAL_ATTRS(10),
5633 THERMAL_ATTRS(11),
5634 THERMAL_ATTRS(12),
5635 THERMAL_ATTRS(13),
5636 THERMAL_ATTRS(14),
5637 THERMAL_ATTRS(15),
5638 THERMAL_ATTRS(0),
5639 THERMAL_ATTRS(1),
5640 THERMAL_ATTRS(2),
5641 THERMAL_ATTRS(3),
5642 THERMAL_ATTRS(4),
5643 THERMAL_ATTRS(5),
5644 THERMAL_ATTRS(6),
5645 THERMAL_ATTRS(7),
5646 NULL
5647};
5648
5649static const struct attribute_group thermal_temp_input16_group = {
5650 .attrs = thermal_temp_input_attr
5651};
5652
5653static const struct attribute_group thermal_temp_input8_group = {
5654 .attrs = &thermal_temp_input_attr[8]
5655};
5656
5657#undef THERMAL_SENSOR_ATTR_TEMP
5658#undef THERMAL_ATTRS
5659
5660/* --------------------------------------------------------------------- */
5661
a5763f22 5662static int __init thermal_init(struct ibm_init_struct *iibm)
78f81cc4 5663{
60eb0b35
HMH		 5664 u8 t, ta1, ta2;
5665 int i;
5fba344c 5666 int acpi_tmp7;
2c37aa4e 5667 int res;
5fba344c 5668
fe08bc4b
HMH		 5669 vdbg_printk(TPACPI_DBG_INIT, "initializing thermal subdriver\n");
5670
5fba344c 5671 acpi_tmp7 = acpi_evalf(ec_handle, NULL, "TMP7", "qv");
60eb0b35 5672
3d6f99ca 5673 if (thinkpad_id.ec_model) {
60eb0b35
HMH		 5674 /*
5675 * Direct EC access mode: sensors at registers
5676 * 0x78-0x7F, 0xC0-0xC7. Registers return 0x00 for
5677 * non-implemented, thermal sensors return 0x80 when
5678 * not available
5679 */
78f81cc4 5680
60eb0b35
HMH		 5681 ta1 = ta2 = 0;
5682 for (i = 0; i < 8; i++) {
04cc862c 5683 if (acpi_ec_read(TP_EC_THERMAL_TMP0 + i, &t)) {
60eb0b35
HMH		 5684 ta1 |= t;
5685 } else {
5686 ta1 = 0;
5687 break;
5688 }
04cc862c 5689 if (acpi_ec_read(TP_EC_THERMAL_TMP8 + i, &t)) {
60eb0b35
HMH		 5690 ta2 |= t;
5691 } else {
5692 ta1 = 0;
5693 break;
5694 }
5695 }
5696 if (ta1 == 0) {
5697 /* This is sheer paranoia, but we handle it anyway */
5698 if (acpi_tmp7) {
e0c7dfe7 5699 printk(TPACPI_ERR
60eb0b35 5700 "ThinkPad ACPI EC access misbehaving, "
35ff8b9f
HMH		 5701 "falling back to ACPI TMPx access "
5702 "mode\n");
efa27145 5703 thermal_read_mode = TPACPI_THERMAL_ACPI_TMP07;
60eb0b35 5704 } else {
e0c7dfe7 5705 printk(TPACPI_ERR
60eb0b35
HMH		 5706 "ThinkPad ACPI EC access misbehaving, "
5707 "disabling thermal sensors access\n");
efa27145 5708 thermal_read_mode = TPACPI_THERMAL_NONE;
60eb0b35
HMH		 5709 }
5710 } else {
5711 thermal_read_mode =
5712 (ta2 != 0) ?
efa27145 5713 TPACPI_THERMAL_TPEC_16 : TPACPI_THERMAL_TPEC_8;
60eb0b35
HMH		 5714 }
5715 } else if (acpi_tmp7) {
e28393c0
HMH		 5716 if (tpacpi_is_ibm() &&
5717 acpi_evalf(ec_handle, NULL, "UPDT", "qv")) {
a26f878a 5718 /* 600e/x, 770e, 770x */
efa27145 5719 thermal_read_mode = TPACPI_THERMAL_ACPI_UPDT;
a26f878a 5720 } else {
e28393c0 5721 /* IBM/LENOVO DSDT EC.TMPx access, max 8 sensors */
efa27145 5722 thermal_read_mode = TPACPI_THERMAL_ACPI_TMP07;
a26f878a
HMH		 5723 }
5724 } else {
5725 /* temperatures not supported on 570, G4x, R30, R31, R32 */
efa27145 5726 thermal_read_mode = TPACPI_THERMAL_NONE;
a26f878a 5727 }
78f81cc4 5728
fe08bc4b
HMH		 5729 vdbg_printk(TPACPI_DBG_INIT, "thermal is %s, mode %d\n",
5730 str_supported(thermal_read_mode != TPACPI_THERMAL_NONE),
5731 thermal_read_mode);
5732
35ff8b9f 5733 switch (thermal_read_mode) {
2c37aa4e 5734 case TPACPI_THERMAL_TPEC_16:
7fd40029 5735 res = sysfs_create_group(&tpacpi_sensors_pdev->dev.kobj,
2c37aa4e
HMH		 5736 &thermal_temp_input16_group);
5737 if (res)
5738 return res;
5739 break;
5740 case TPACPI_THERMAL_TPEC_8:
5741 case TPACPI_THERMAL_ACPI_TMP07:
5742 case TPACPI_THERMAL_ACPI_UPDT:
7fd40029 5743 res = sysfs_create_group(&tpacpi_sensors_pdev->dev.kobj,
2c37aa4e
HMH		 5744 &thermal_temp_input8_group);
5745 if (res)
5746 return res;
5747 break;
5748 case TPACPI_THERMAL_NONE:
5749 default:
5750 return 1;
5751 }
5752
5753 return 0;
5754}
5755
5756static void thermal_exit(void)
5757{
35ff8b9f 5758 switch (thermal_read_mode) {
2c37aa4e 5759 case TPACPI_THERMAL_TPEC_16:
7fd40029 5760 sysfs_remove_group(&tpacpi_sensors_pdev->dev.kobj,
2c37aa4e
HMH		 5761 &thermal_temp_input16_group);
5762 break;
5763 case TPACPI_THERMAL_TPEC_8:
5764 case TPACPI_THERMAL_ACPI_TMP07:
5765 case TPACPI_THERMAL_ACPI_UPDT:
7fd40029 5766 sysfs_remove_group(&tpacpi_sensors_pdev->dev.kobj,
f04d5e01 5767 &thermal_temp_input8_group);
2c37aa4e
HMH		 5768 break;
5769 case TPACPI_THERMAL_NONE:
5770 default:
5771 break;
5772 }
78f81cc4
BD		 5773}
5774
887965e6 5775static int thermal_read(struct seq_file *m)
a26f878a 5776{
a26f878a
HMH		 5777 int n, i;
5778 struct ibm_thermal_sensors_struct t;
5779
5780 n = thermal_get_sensors(&t);
5781 if (unlikely(n < 0))
5782 return n;
5783
887965e6 5784 seq_printf(m, "temperatures:\t");
a26f878a
HMH		 5785
5786 if (n > 0) {
5787 for (i = 0; i < (n - 1); i++)
887965e6
AD		 5788 seq_printf(m, "%d ", t.temp[i] / 1000);
5789 seq_printf(m, "%d\n", t.temp[i] / 1000);
a26f878a 5790 } else
887965e6 5791 seq_printf(m, "not supported\n");
78f81cc4 5792
887965e6 5793 return 0;
78f81cc4
BD		 5794}
5795
a5763f22
HMH		 5796static struct ibm_struct thermal_driver_data = {
5797 .name = "thermal",
5798 .read = thermal_read,
2c37aa4e 5799 .exit = thermal_exit,
a5763f22
HMH		 5800};
5801
56b6aeb0
HMH		 5802/*************************************************************************
5803 * EC Dump subdriver
5804 */
5805
78f81cc4
BD		 5806static u8 ecdump_regs[256];
5807
887965e6 5808static int ecdump_read(struct seq_file *m)
78f81cc4 5809{
78f81cc4
BD		 5810 int i, j;
5811 u8 v;
5812
887965e6 5813 seq_printf(m, "EC "
78f81cc4
BD		 5814 " +00 +01 +02 +03 +04 +05 +06 +07"
5815 " +08 +09 +0a +0b +0c +0d +0e +0f\n");
5816 for (i = 0; i < 256; i += 16) {
887965e6 5817 seq_printf(m, "EC 0x%02x:", i);
78f81cc4
BD		 5818 for (j = 0; j < 16; j++) {
5819 if (!acpi_ec_read(i + j, &v))
5820 break;
5821 if (v != ecdump_regs[i + j])
887965e6 5822 seq_printf(m, " *%02x", v);
78f81cc4 5823 else
887965e6 5824 seq_printf(m, " %02x", v);
78f81cc4
BD		 5825 ecdump_regs[i + j] = v;
5826 }
887965e6 5827 seq_putc(m, '\n');
78f81cc4
BD		 5828 if (j != 16)
5829 break;
5830 }
5831
5832 /* These are way too dangerous to advertise openly... */
5833#if 0
887965e6 5834 seq_printf(m, "commands:\t0x<offset> 0x<value>"
78f81cc4 5835 " (<offset> is 00-ff, <value> is 00-ff)\n");
887965e6 5836 seq_printf(m, "commands:\t0x<offset> <value> "
78f81cc4
BD		 5837 " (<offset> is 00-ff, <value> is 0-255)\n");
5838#endif
887965e6 5839 return 0;
78f81cc4
BD		 5840}
5841
5842static int ecdump_write(char *buf)
5843{
5844 char *cmd;
5845 int i, v;
5846
5847 while ((cmd = next_cmd(&buf))) {
5848 if (sscanf(cmd, "0x%x 0x%x", &i, &v) == 2) {
5849 /* i and v set */
5850 } else if (sscanf(cmd, "0x%x %u", &i, &v) == 2) {
5851 /* i and v set */
5852 } else
5853 return -EINVAL;
5854 if (i >= 0 && i < 256 && v >= 0 && v < 256) {
5855 if (!acpi_ec_write(i, v))
1da177e4
LT		 5856 return -EIO;
5857 } else
5858 return -EINVAL;
5859 }
5860
5861 return 0;
78f81cc4
BD		 5862}
5863
a5763f22
HMH		 5864static struct ibm_struct ecdump_driver_data = {
5865 .name = "ecdump",
5866 .read = ecdump_read,
5867 .write = ecdump_write,
92641177 5868 .flags.experimental = 1,
a5763f22
HMH		 5869};
5870
56b6aeb0
HMH		 5871/*************************************************************************
5872 * Backlight/brightness subdriver
5873 */
5874
f74a27d4
HMH		 5875#define TPACPI_BACKLIGHT_DEV_NAME "thinkpad_screen"
5876
0e501834
HMH		 5877/*
5878 * ThinkPads can read brightness from two places: EC HBRV (0x31), or
5879 * CMOS NVRAM byte 0x5E, bits 0-3.
5880 *
5881 * EC HBRV (0x31) has the following layout
5882 * Bit 7: unknown function
5883 * Bit 6: unknown function
5884 * Bit 5: Z: honour scale changes, NZ: ignore scale changes
5885 * Bit 4: must be set to zero to avoid problems
5886 * Bit 3-0: backlight brightness level
5887 *
5888 * brightness_get_raw returns status data in the HBRV layout
d7880f10
HMH		 5889 *
5890 * WARNING: The X61 has been verified to use HBRV for something else, so
5891 * this should be used _only_ on IBM ThinkPads, and maybe with some careful
5892 * testing on the very early *60 Lenovo models...
0e501834
HMH		 5893 */
5894
e11aecf1
HMH		 5895enum {
5896 TP_EC_BACKLIGHT = 0x31,
5897
5898 /* TP_EC_BACKLIGHT bitmasks */
5899 TP_EC_BACKLIGHT_LVLMSK = 0x1F,
5900 TP_EC_BACKLIGHT_CMDMSK = 0xE0,
5901 TP_EC_BACKLIGHT_MAPSW = 0x20,
5902};
5903
0e501834
HMH		 5904enum tpacpi_brightness_access_mode {
5905 TPACPI_BRGHT_MODE_AUTO = 0, /* Not implemented yet */
5906 TPACPI_BRGHT_MODE_EC, /* EC control */
5907 TPACPI_BRGHT_MODE_UCMS_STEP, /* UCMS step-based control */
5908 TPACPI_BRGHT_MODE_ECNVRAM, /* EC control w/ NVRAM store */
5909 TPACPI_BRGHT_MODE_MAX
5910};
5911
94954cc6 5912static struct backlight_device *ibm_backlight_device;
0e501834
HMH		 5913
5914static enum tpacpi_brightness_access_mode brightness_mode =
5915 TPACPI_BRGHT_MODE_MAX;
5916
f74a27d4
HMH		 5917static unsigned int brightness_enable = 2; /* 2 = auto, 0 = no, 1 = yes */
5918
b21a15f6 5919static struct mutex brightness_mutex;
56b6aeb0 5920
0e501834
HMH		 5921/* NVRAM brightness access,
5922 * call with brightness_mutex held! */
5923static unsigned int tpacpi_brightness_nvram_get(void)
b21a15f6 5924{
0e501834 5925 u8 lnvram;
b21a15f6 5926
0e501834
HMH		 5927 lnvram = (nvram_read_byte(TP_NVRAM_ADDR_BRIGHTNESS)
5928 & TP_NVRAM_MASK_LEVEL_BRIGHTNESS)
5929 >> TP_NVRAM_POS_LEVEL_BRIGHTNESS;
77775838 5930 lnvram &= bright_maxlvl;
0e501834
HMH		 5931
5932 return lnvram;
5933}
5934
5935static void tpacpi_brightness_checkpoint_nvram(void)
5936{
5937 u8 lec = 0;
5938 u8 b_nvram;
5939
5940 if (brightness_mode != TPACPI_BRGHT_MODE_ECNVRAM)
5941 return;
5942
5943 vdbg_printk(TPACPI_DBG_BRGHT,
5944 "trying to checkpoint backlight level to NVRAM...\n");
5945
5946 if (mutex_lock_killable(&brightness_mutex) < 0)
5947 return;
5948
5949 if (unlikely(!acpi_ec_read(TP_EC_BACKLIGHT, &lec)))
5950 goto unlock;
5951 lec &= TP_EC_BACKLIGHT_LVLMSK;
5952 b_nvram = nvram_read_byte(TP_NVRAM_ADDR_BRIGHTNESS);
5953
5954 if (lec != ((b_nvram & TP_NVRAM_MASK_LEVEL_BRIGHTNESS)
5955 >> TP_NVRAM_POS_LEVEL_BRIGHTNESS)) {
5956 /* NVRAM needs update */
5957 b_nvram &= ~(TP_NVRAM_MASK_LEVEL_BRIGHTNESS <<
5958 TP_NVRAM_POS_LEVEL_BRIGHTNESS);
5959 b_nvram |= lec;
5960 nvram_write_byte(b_nvram, TP_NVRAM_ADDR_BRIGHTNESS);
5961 dbg_printk(TPACPI_DBG_BRGHT,
5962 "updated NVRAM backlight level to %u (0x%02x)\n",
5963 (unsigned int) lec, (unsigned int) b_nvram);
5964 } else
5965 vdbg_printk(TPACPI_DBG_BRGHT,
5966 "NVRAM backlight level already is %u (0x%02x)\n",
5967 (unsigned int) lec, (unsigned int) b_nvram);
5968
5969unlock:
5970 mutex_unlock(&brightness_mutex);
5971}
5972
5973
5974/* call with brightness_mutex held! */
5975static int tpacpi_brightness_get_raw(int *status)
5976{
5977 u8 lec = 0;
5978
5979 switch (brightness_mode) {
5980 case TPACPI_BRGHT_MODE_UCMS_STEP:
5981 *status = tpacpi_brightness_nvram_get();
5982 return 0;
5983 case TPACPI_BRGHT_MODE_EC:
5984 case TPACPI_BRGHT_MODE_ECNVRAM:
5985 if (unlikely(!acpi_ec_read(TP_EC_BACKLIGHT, &lec)))
2d5e94d7 5986 return -EIO;
0e501834
HMH		 5987 *status = lec;
5988 return 0;
5989 default:
5990 return -ENXIO;
b21a15f6 5991 }
0e501834
HMH		 5992}
5993
5994/* call with brightness_mutex held! */
5995/* do NOT call with illegal backlight level value */
5996static int tpacpi_brightness_set_ec(unsigned int value)
5997{
5998 u8 lec = 0;
5999
6000 if (unlikely(!acpi_ec_read(TP_EC_BACKLIGHT, &lec)))
6001 return -EIO;
6002
6003 if (unlikely(!acpi_ec_write(TP_EC_BACKLIGHT,
6004 (lec & TP_EC_BACKLIGHT_CMDMSK) |
6005 (value & TP_EC_BACKLIGHT_LVLMSK))))
6006 return -EIO;
6007
6008 return 0;
6009}
6010
6011/* call with brightness_mutex held! */
6012static int tpacpi_brightness_set_ucmsstep(unsigned int value)
6013{
6014 int cmos_cmd, inc;
6015 unsigned int current_value, i;
6016
6017 current_value = tpacpi_brightness_nvram_get();
6018
6019 if (value == current_value)
6020 return 0;
6021
6022 cmos_cmd = (value > current_value) ?
6023 TP_CMOS_BRIGHTNESS_UP :
6024 TP_CMOS_BRIGHTNESS_DOWN;
6025 inc = (value > current_value) ? 1 : -1;
6026
6027 for (i = current_value; i != value; i += inc)
6028 if (issue_thinkpad_cmos_command(cmos_cmd))
6029 return -EIO;
b21a15f6 6030
e11aecf1 6031 return 0;
b21a15f6
HMH		 6032}
6033
6034/* May return EINTR which can always be mapped to ERESTARTSYS */
0e501834 6035static int brightness_set(unsigned int value)
b21a15f6 6036{
0e501834 6037 int res;
b21a15f6 6038
77775838 6039 if (value > bright_maxlvl || value < 0)
b21a15f6
HMH		 6040 return -EINVAL;
6041
0e501834
HMH		 6042 vdbg_printk(TPACPI_DBG_BRGHT,
6043 "set backlight level to %d\n", value);
6044
7646ea88 6045 res = mutex_lock_killable(&brightness_mutex);
b21a15f6
HMH		 6046 if (res < 0)
6047 return res;
6048
0e501834
HMH		 6049 switch (brightness_mode) {
6050 case TPACPI_BRGHT_MODE_EC:
6051 case TPACPI_BRGHT_MODE_ECNVRAM:
6052 res = tpacpi_brightness_set_ec(value);
6053 break;
6054 case TPACPI_BRGHT_MODE_UCMS_STEP:
6055 res = tpacpi_brightness_set_ucmsstep(value);
6056 break;
6057 default:
6058 res = -ENXIO;
b21a15f6
HMH		 6059 }
6060
b21a15f6
HMH		 6061 mutex_unlock(&brightness_mutex);
6062 return res;
6063}
6064
6065/* sysfs backlight class ----------------------------------------------- */
6066
6067static int brightness_update_status(struct backlight_device *bd)
6068{
0e501834 6069 unsigned int level =
b21a15f6
HMH		 6070 (bd->props.fb_blank == FB_BLANK_UNBLANK &&
6071 bd->props.power == FB_BLANK_UNBLANK) ?
0e501834
HMH		 6072 bd->props.brightness : 0;
6073
6074 dbg_printk(TPACPI_DBG_BRGHT,
6075 "backlight: attempt to set level to %d\n",
6076 level);
6077
6078 /* it is the backlight class's job (caller) to handle
6079 * EINTR and other errors properly */
6080 return brightness_set(level);
b21a15f6
HMH		 6081}
6082
e11aecf1 6083static int brightness_get(struct backlight_device *bd)
a3f104c0 6084{
e11aecf1 6085 int status, res;
a3f104c0 6086
0e501834 6087 res = mutex_lock_killable(&brightness_mutex);
e11aecf1 6088 if (res < 0)
0e501834
HMH		 6089 return 0;
6090
6091 res = tpacpi_brightness_get_raw(&status);
6092
6093 mutex_unlock(&brightness_mutex);
6094
6095 if (res < 0)
6096 return 0;
e11e211a 6097
e11aecf1 6098 return status & TP_EC_BACKLIGHT_LVLMSK;
e11e211a
HMH		 6099}
6100
347a2686
HMH		 6101static void tpacpi_brightness_notify_change(void)
6102{
6103 backlight_force_update(ibm_backlight_device,
6104 BACKLIGHT_UPDATE_HOTKEY);
6105}
6106
b21a15f6 6107static struct backlight_ops ibm_backlight_data = {
35ff8b9f
HMH		 6108 .get_brightness = brightness_get,
6109 .update_status = brightness_update_status,
56b6aeb0 6110};
e11e211a 6111
b21a15f6 6112/* --------------------------------------------------------------------- */
e11e211a 6113
77775838
HMH		 6114static int __init tpacpi_query_bcl_levels(acpi_handle handle)
6115{
6116 struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
6117 union acpi_object *obj;
6118 int rc;
6119
6120 if (ACPI_SUCCESS(acpi_evaluate_object(handle, NULL, NULL, &buffer))) {
6121 obj = (union acpi_object *)buffer.pointer;
6122 if (!obj || (obj->type != ACPI_TYPE_PACKAGE)) {
6123 printk(TPACPI_ERR "Unknown _BCL data, "
6124 "please report this to %s\n", TPACPI_MAIL);
6125 rc = 0;
6126 } else {
6127 rc = obj->package.count;
6128 }
6129 } else {
6130 return 0;
6131 }
6132
6133 kfree(buffer.pointer);
6134 return rc;
6135}
6136
6137static acpi_status __init tpacpi_acpi_walk_find_bcl(acpi_handle handle,
6138 u32 lvl, void *context, void **rv)
6139{
6140 char name[ACPI_PATH_SEGMENT_LENGTH];
6141 struct acpi_buffer buffer = { sizeof(name), &name };
6142
6143 if (ACPI_SUCCESS(acpi_get_name(handle, ACPI_SINGLE_NAME, &buffer)) &&
6144 !strncmp("_BCL", name, sizeof(name) - 1)) {
6145 BUG_ON(!rv || !*rv);
6146 **(int **)rv = tpacpi_query_bcl_levels(handle);
6147 return AE_CTRL_TERMINATE;
6148 } else {
6149 return AE_OK;
6150 }
6151}
6152
6153/*
6154 * Returns 0 (no ACPI _BCL or _BCL invalid), or size of brightness map
6155 */
6156static unsigned int __init tpacpi_check_std_acpi_brightness_support(void)
6157{
6158 int status;
6159 int bcl_levels = 0;
6160 void *bcl_ptr = &bcl_levels;
6161
6162 if (!vid_handle)
6163 TPACPI_ACPIHANDLE_INIT(vid);
6164
6165 if (!vid_handle)
6166 return 0;
6167
6168 /*
6169 * Search for a _BCL method, and execute it. This is safe on all
6170 * ThinkPads, and as a side-effect, _BCL will place a Lenovo Vista
6171 * BIOS in ACPI backlight control mode. We do NOT have to care
6172 * about calling the _BCL method in an enabled video device, any
6173 * will do for our purposes.
6174 */
6175
6176 status = acpi_walk_namespace(ACPI_TYPE_METHOD, vid_handle, 3,
6177 tpacpi_acpi_walk_find_bcl, NULL, NULL,
6178 &bcl_ptr);
6179
6180 if (ACPI_SUCCESS(status) && bcl_levels > 2) {
6181 tp_features.bright_acpimode = 1;
6182 return bcl_levels - 2;
6183 }
6184
6185 return 0;
6186}
6187
59fe4fe3
HMH		 6188/*
6189 * These are only useful for models that have only one possibility
6190 * of GPU. If the BIOS model handles both ATI and Intel, don't use
6191 * these quirks.
6192 */
6193#define TPACPI_BRGHT_Q_NOEC 0x0001 /* Must NOT use EC HBRV */
6194#define TPACPI_BRGHT_Q_EC 0x0002 /* Should or must use EC HBRV */
6195#define TPACPI_BRGHT_Q_ASK 0x8000 /* Ask for user report */
6196
6197static const struct tpacpi_quirk brightness_quirk_table[] __initconst = {
6198 /* Models with ATI GPUs known to require ECNVRAM mode */
6199 TPACPI_Q_IBM('1', 'Y', TPACPI_BRGHT_Q_EC), /* T43/p ATI */
6200
6da25bf5 6201 /* Models with ATI GPUs that can use ECNVRAM */
7d1894d8 6202 TPACPI_Q_IBM('1', 'R', TPACPI_BRGHT_Q_EC), /* R50,51 T40-42 */
59fe4fe3 6203 TPACPI_Q_IBM('1', 'Q', TPACPI_BRGHT_Q_ASK|TPACPI_BRGHT_Q_EC),
7d1894d8 6204 TPACPI_Q_IBM('7', '6', TPACPI_BRGHT_Q_EC), /* R52 */
59fe4fe3
HMH		 6205 TPACPI_Q_IBM('7', '8', TPACPI_BRGHT_Q_ASK|TPACPI_BRGHT_Q_EC),
6206
6da25bf5 6207 /* Models with Intel Extreme Graphics 2 */
7d1894d8 6208 TPACPI_Q_IBM('1', 'U', TPACPI_BRGHT_Q_NOEC), /* X40 */
a9f8eacc
HMH		 6209 TPACPI_Q_IBM('1', 'V', TPACPI_BRGHT_Q_ASK|TPACPI_BRGHT_Q_EC),
6210 TPACPI_Q_IBM('1', 'W', TPACPI_BRGHT_Q_ASK|TPACPI_BRGHT_Q_EC),
59fe4fe3
HMH		 6211
6212 /* Models with Intel GMA900 */
6213 TPACPI_Q_IBM('7', '0', TPACPI_BRGHT_Q_NOEC), /* T43, R52 */
6214 TPACPI_Q_IBM('7', '4', TPACPI_BRGHT_Q_NOEC), /* X41 */
6215 TPACPI_Q_IBM('7', '5', TPACPI_BRGHT_Q_NOEC), /* X41 Tablet */
6216};
6217
77775838
HMH		 6218/*
6219 * Returns < 0 for error, otherwise sets tp_features.bright_*
6220 * and bright_maxlvl.
6221 */
6222static void __init tpacpi_detect_brightness_capabilities(void)
6223{
6224 unsigned int b;
6225
6226 vdbg_printk(TPACPI_DBG_INIT,
6227 "detecting firmware brightness interface capabilities\n");
6228
6229 /* we could run a quirks check here (same table used by
6230 * brightness_init) if needed */
6231
6232 /*
6233 * We always attempt to detect acpi support, so as to switch
6234 * Lenovo Vista BIOS to ACPI brightness mode even if we are not
6235 * going to publish a backlight interface
6236 */
6237 b = tpacpi_check_std_acpi_brightness_support();
6238 switch (b) {
6239 case 16:
6240 bright_maxlvl = 15;
6241 printk(TPACPI_INFO
6242 "detected a 16-level brightness capable ThinkPad\n");
6243 break;
6244 case 8:
6245 case 0:
6246 bright_maxlvl = 7;
6247 printk(TPACPI_INFO
6248 "detected a 8-level brightness capable ThinkPad\n");
6249 break;
6250 default:
6251 printk(TPACPI_ERR
6252 "Unsupported brightness interface, "
6253 "please contact %s\n", TPACPI_MAIL);
6254 tp_features.bright_unkfw = 1;
6255 bright_maxlvl = b - 1;
6256 }
6257}
6258
a5763f22 6259static int __init brightness_init(struct ibm_init_struct *iibm)
56b6aeb0 6260{
a19a6ee6 6261 struct backlight_properties props;
56b6aeb0 6262 int b;
59fe4fe3 6263 unsigned long quirks;
56b6aeb0 6264
fe08bc4b
HMH		 6265 vdbg_printk(TPACPI_DBG_INIT, "initializing brightness subdriver\n");
6266
f432255e
HMH		 6267 mutex_init(&brightness_mutex);
6268
59fe4fe3
HMH		 6269 quirks = tpacpi_check_quirks(brightness_quirk_table,
6270 ARRAY_SIZE(brightness_quirk_table));
6271
77775838
HMH		 6272 /* tpacpi_detect_brightness_capabilities() must have run already */
6273
6274 /* if it is unknown, we don't handle it: it wouldn't be safe */
6275 if (tp_features.bright_unkfw)
6276 return 1;
2dba1b5d 6277
77775838 6278 if (tp_features.bright_acpimode) {
2dba1b5d
TR		 6279 if (acpi_video_backlight_support()) {
6280 if (brightness_enable > 1) {
6281 printk(TPACPI_NOTICE
6282 "Standard ACPI backlight interface "
6283 "available, not loading native one.\n");
6284 return 1;
6285 } else if (brightness_enable == 1) {
6286 printk(TPACPI_NOTICE
6287 "Backlight control force enabled, even if standard "
6288 "ACPI backlight interface is available\n");
6289 }
6290 } else {
6291 if (brightness_enable > 1) {
6292 printk(TPACPI_NOTICE
6293 "Standard ACPI backlight interface not "
6294 "available, thinkpad_acpi native "
6295 "brightness control enabled\n");
6296 }
e11e211a 6297 }
87cc537a
HMH		 6298 }
6299
b5972796 6300 if (!brightness_enable) {
0e501834 6301 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_BRGHT,
b5972796
HMH		 6302 "brightness support disabled by "
6303 "module parameter\n");
6304 return 1;
6305 }
6306
0e501834
HMH		 6307 /*
6308 * Check for module parameter bogosity, note that we
6309 * init brightness_mode to TPACPI_BRGHT_MODE_MAX in order to be
6310 * able to detect "unspecified"
6311 */
6312 if (brightness_mode > TPACPI_BRGHT_MODE_MAX)
6313 return -EINVAL;
24d3b774 6314
0e501834
HMH		 6315 /* TPACPI_BRGHT_MODE_AUTO not implemented yet, just use default */
6316 if (brightness_mode == TPACPI_BRGHT_MODE_AUTO ||
6317 brightness_mode == TPACPI_BRGHT_MODE_MAX) {
59fe4fe3
HMH		 6318 if (quirks & TPACPI_BRGHT_Q_EC)
6319 brightness_mode = TPACPI_BRGHT_MODE_ECNVRAM;
6320 else
0e501834 6321 brightness_mode = TPACPI_BRGHT_MODE_UCMS_STEP;
24d3b774 6322
0e501834 6323 dbg_printk(TPACPI_DBG_BRGHT,
59fe4fe3 6324 "driver auto-selected brightness_mode=%d\n",
0e501834
HMH		 6325 brightness_mode);
6326 }
24d3b774 6327
d7880f10 6328 /* Safety */
e28393c0 6329 if (!tpacpi_is_ibm() &&
d7880f10
HMH		 6330 (brightness_mode == TPACPI_BRGHT_MODE_ECNVRAM ||
6331 brightness_mode == TPACPI_BRGHT_MODE_EC))
6332 return -EINVAL;
6333
0e501834 6334 if (tpacpi_brightness_get_raw(&b) < 0)
24d3b774 6335 return 1;
56b6aeb0 6336
a19a6ee6 6337 memset(&props, 0, sizeof(struct backlight_properties));
77775838
HMH		 6338 props.max_brightness = bright_maxlvl;
6339 props.brightness = b & TP_EC_BACKLIGHT_LVLMSK;
a19a6ee6
MG		 6340 ibm_backlight_device = backlight_device_register(TPACPI_BACKLIGHT_DEV_NAME,
6341 NULL, NULL,
6342 &ibm_backlight_data,
6343 &props);
56b6aeb0 6344 if (IS_ERR(ibm_backlight_device)) {
435c47e2
HMH		 6345 int rc = PTR_ERR(ibm_backlight_device);
6346 ibm_backlight_device = NULL;
e0c7dfe7 6347 printk(TPACPI_ERR "Could not register backlight device\n");
435c47e2 6348 return rc;
56b6aeb0 6349 }
0e501834
HMH		 6350 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_BRGHT,
6351 "brightness is supported\n");
56b6aeb0 6352
59fe4fe3
HMH		 6353 if (quirks & TPACPI_BRGHT_Q_ASK) {
6354 printk(TPACPI_NOTICE
6355 "brightness: will use unverified default: "
6356 "brightness_mode=%d\n", brightness_mode);
6357 printk(TPACPI_NOTICE
6358 "brightness: please report to %s whether it works well "
6359 "or not on your ThinkPad\n", TPACPI_MAIL);
6360 }
6361
56b6aeb0
HMH		 6362 backlight_update_status(ibm_backlight_device);
6363
347a2686
HMH		 6364 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_BRGHT,
6365 "brightness: registering brightness hotkeys "
6366 "as change notification\n");
6367 tpacpi_hotkey_driver_mask_set(hotkey_driver_mask
6368 | TP_ACPI_HKEY_BRGHTUP_MASK
6369 | TP_ACPI_HKEY_BRGHTDWN_MASK);;
56b6aeb0
HMH		 6370 return 0;
6371}
6372
0e501834
HMH		 6373static void brightness_suspend(pm_message_t state)
6374{
6375 tpacpi_brightness_checkpoint_nvram();
6376}
6377
6378static void brightness_shutdown(void)
6379{
6380 tpacpi_brightness_checkpoint_nvram();
6381}
6382
56b6aeb0
HMH		 6383static void brightness_exit(void)
6384{
6385 if (ibm_backlight_device) {
0e501834 6386 vdbg_printk(TPACPI_DBG_EXIT | TPACPI_DBG_BRGHT,
fe08bc4b 6387 "calling backlight_device_unregister()\n");
56b6aeb0 6388 backlight_device_unregister(ibm_backlight_device);
56b6aeb0 6389 }
0e501834
HMH		 6390
6391 tpacpi_brightness_checkpoint_nvram();
56b6aeb0
HMH		 6392}
6393
887965e6 6394static int brightness_read(struct seq_file *m)
56b6aeb0 6395{
56b6aeb0
HMH		 6396 int level;
6397
35ff8b9f
HMH		 6398 level = brightness_get(NULL);
6399 if (level < 0) {
887965e6 6400 seq_printf(m, "level:\t\tunreadable\n");
56b6aeb0 6401 } else {
887965e6
AD		 6402 seq_printf(m, "level:\t\t%d\n", level);
6403 seq_printf(m, "commands:\tup, down\n");
77775838
HMH		 6404 seq_printf(m, "commands:\tlevel <level> (<level> is 0-%d)\n",
6405 bright_maxlvl);
56b6aeb0
HMH		 6406 }
6407
887965e6 6408 return 0;
56b6aeb0
HMH		 6409}
6410
8acb0250
HM		 6411static int brightness_write(char *buf)
6412{
6413 int level;
4273af8d 6414 int rc;
1da177e4 6415 char *cmd;
1da177e4 6416
4273af8d
HMH		 6417 level = brightness_get(NULL);
6418 if (level < 0)
6419 return level;
78f81cc4 6420
4273af8d 6421 while ((cmd = next_cmd(&buf))) {
78f81cc4 6422 if (strlencmp(cmd, "up") == 0) {
77775838 6423 if (level < bright_maxlvl)
4273af8d 6424 level++;
78f81cc4 6425 } else if (strlencmp(cmd, "down") == 0) {
4273af8d
HMH		 6426 if (level > 0)
6427 level--;
6428 } else if (sscanf(cmd, "level %d", &level) == 1 &&
77775838 6429 level >= 0 && level <= bright_maxlvl) {
4273af8d 6430 /* new level set */
78f81cc4
BD		 6431 } else
6432 return -EINVAL;
78f81cc4
BD		 6433 }
6434
0e501834
HMH		 6435 tpacpi_disclose_usertask("procfs brightness",
6436 "set level to %d\n", level);
6437
4273af8d
HMH		 6438 /*
6439 * Now we know what the final level should be, so we try to set it.
6440 * Doing it this way makes the syscall restartable in case of EINTR
6441 */
6442 rc = brightness_set(level);
347a2686
HMH		 6443 if (!rc && ibm_backlight_device)
6444 backlight_force_update(ibm_backlight_device,
6445 BACKLIGHT_UPDATE_SYSFS);
80a8d122 6446 return (rc == -EINTR)? -ERESTARTSYS : rc;
78f81cc4
BD		 6447}
6448
a5763f22
HMH		 6449static struct ibm_struct brightness_driver_data = {
6450 .name = "brightness",
6451 .read = brightness_read,
6452 .write = brightness_write,
6453 .exit = brightness_exit,
0e501834
HMH		 6454 .suspend = brightness_suspend,
6455 .shutdown = brightness_shutdown,
a5763f22
HMH		 6456};
6457
56b6aeb0
HMH		 6458/*************************************************************************
6459 * Volume subdriver
6460 */
fb87a811 6461
329e4e18
HMH		 6462/*
6463 * IBM ThinkPads have a simple volume controller with MUTE gating.
6464 * Very early Lenovo ThinkPads follow the IBM ThinkPad spec.
6465 *
6466 * Since the *61 series (and probably also the later *60 series), Lenovo
6467 * ThinkPads only implement the MUTE gate.
6468 *
6469 * EC register 0x30
6470 * Bit 6: MUTE (1 mutes sound)
6471 * Bit 3-0: Volume
6472 * Other bits should be zero as far as we know.
6473 *
6474 * This is also stored in CMOS NVRAM, byte 0x60, bit 6 (MUTE), and
6475 * bits 3-0 (volume). Other bits in NVRAM may have other functions,
6476 * such as bit 7 which is used to detect repeated presses of MUTE,
6477 * and we leave them unchanged.
6478 */
6479
ff850c33
HMH		 6480#ifdef CONFIG_THINKPAD_ACPI_ALSA_SUPPORT
6481
0d204c34
HMH		 6482#define TPACPI_ALSA_DRVNAME "ThinkPad EC"
6483#define TPACPI_ALSA_SHRTNAME "ThinkPad Console Audio Control"
6484#define TPACPI_ALSA_MIXERNAME TPACPI_ALSA_SHRTNAME
6485
ead510ce 6486static int alsa_index = ~((1 << (SNDRV_CARDS - 3)) - 1); /* last three slots */
0d204c34
HMH		 6487static char *alsa_id = "ThinkPadEC";
6488static int alsa_enable = SNDRV_DEFAULT_ENABLE1;
6489
6490struct tpacpi_alsa_data {
6491 struct snd_card *card;
6492 struct snd_ctl_elem_id *ctl_mute_id;
6493 struct snd_ctl_elem_id *ctl_vol_id;
6494};
6495
6496static struct snd_card *alsa_card;
6497
329e4e18
HMH		 6498enum {
6499 TP_EC_AUDIO = 0x30,
6500
6501 /* TP_EC_AUDIO bits */
6502 TP_EC_AUDIO_MUTESW = 6,
6503
6504 /* TP_EC_AUDIO bitmasks */
6505 TP_EC_AUDIO_LVL_MSK = 0x0F,
6506 TP_EC_AUDIO_MUTESW_MSK = (1 << TP_EC_AUDIO_MUTESW),
6507
6508 /* Maximum volume */
6509 TP_EC_VOLUME_MAX = 14,
6510};
6511
6512enum tpacpi_volume_access_mode {
6513 TPACPI_VOL_MODE_AUTO = 0, /* Not implemented yet */
6514 TPACPI_VOL_MODE_EC, /* Pure EC control */
6515 TPACPI_VOL_MODE_UCMS_STEP, /* UCMS step-based control: N/A */
6516 TPACPI_VOL_MODE_ECNVRAM, /* EC control w/ NVRAM store */
6517 TPACPI_VOL_MODE_MAX
6518};
6519
a112ceee
HMH		 6520enum tpacpi_volume_capabilities {
6521 TPACPI_VOL_CAP_AUTO = 0, /* Use white/blacklist */
6522 TPACPI_VOL_CAP_VOLMUTE, /* Output vol and mute */
6523 TPACPI_VOL_CAP_MUTEONLY, /* Output mute only */
6524 TPACPI_VOL_CAP_MAX
6525};
6526
329e4e18
HMH		 6527static enum tpacpi_volume_access_mode volume_mode =
6528 TPACPI_VOL_MODE_MAX;
6529
a112ceee 6530static enum tpacpi_volume_capabilities volume_capabilities;
c7ac6291 6531static int volume_control_allowed;
f74a27d4 6532
329e4e18
HMH		 6533/*
6534 * Used to syncronize writers to TP_EC_AUDIO and
6535 * TP_NVRAM_ADDR_MIXER, as we need to do read-modify-write
6536 */
6537static struct mutex volume_mutex;
6538
6539static void tpacpi_volume_checkpoint_nvram(void)
78f81cc4 6540{
329e4e18
HMH		 6541 u8 lec = 0;
6542 u8 b_nvram;
a112ceee 6543 u8 ec_mask;
329e4e18
HMH		 6544
6545 if (volume_mode != TPACPI_VOL_MODE_ECNVRAM)
6546 return;
c7ac6291
HMH		 6547 if (!volume_control_allowed)
6548 return;
329e4e18
HMH		 6549
6550 vdbg_printk(TPACPI_DBG_MIXER,
6551 "trying to checkpoint mixer state to NVRAM...\n");
78f81cc4 6552
a112ceee
HMH		 6553 if (tp_features.mixer_no_level_control)
6554 ec_mask = TP_EC_AUDIO_MUTESW_MSK;
6555 else
6556 ec_mask = TP_EC_AUDIO_MUTESW_MSK | TP_EC_AUDIO_LVL_MSK;
6557
329e4e18
HMH		 6558 if (mutex_lock_killable(&volume_mutex) < 0)
6559 return;
6560
6561 if (unlikely(!acpi_ec_read(TP_EC_AUDIO, &lec)))
6562 goto unlock;
6563 lec &= ec_mask;
6564 b_nvram = nvram_read_byte(TP_NVRAM_ADDR_MIXER);
6565
6566 if (lec != (b_nvram & ec_mask)) {
6567 /* NVRAM needs update */
6568 b_nvram &= ~ec_mask;
6569 b_nvram |= lec;
6570 nvram_write_byte(b_nvram, TP_NVRAM_ADDR_MIXER);
6571 dbg_printk(TPACPI_DBG_MIXER,
6572 "updated NVRAM mixer status to 0x%02x (0x%02x)\n",
6573 (unsigned int) lec, (unsigned int) b_nvram);
78f81cc4 6574 } else {
329e4e18
HMH		 6575 vdbg_printk(TPACPI_DBG_MIXER,
6576 "NVRAM mixer status already is 0x%02x (0x%02x)\n",
6577 (unsigned int) lec, (unsigned int) b_nvram);
78f81cc4
BD		 6578 }
6579
329e4e18
HMH		 6580unlock:
6581 mutex_unlock(&volume_mutex);
78f81cc4
BD		 6582}
6583
329e4e18 6584static int volume_get_status_ec(u8 *status)
78f81cc4 6585{
329e4e18 6586 u8 s;
78f81cc4 6587
329e4e18
HMH		 6588 if (!acpi_ec_read(TP_EC_AUDIO, &s))
6589 return -EIO;
78f81cc4 6590
329e4e18 6591 *status = s;
1da177e4 6592
329e4e18 6593 dbg_printk(TPACPI_DBG_MIXER, "status 0x%02x\n", s);
35ff8b9f 6594
329e4e18
HMH		 6595 return 0;
6596}
78f81cc4 6597
329e4e18
HMH		 6598static int volume_get_status(u8 *status)
6599{
6600 return volume_get_status_ec(status);
6601}
78f81cc4 6602
329e4e18
HMH		 6603static int volume_set_status_ec(const u8 status)
6604{
6605 if (!acpi_ec_write(TP_EC_AUDIO, status))
6606 return -EIO;
78f81cc4 6607
329e4e18
HMH		 6608 dbg_printk(TPACPI_DBG_MIXER, "set EC mixer to 0x%02x\n", status);
6609
6610 return 0;
6611}
6612
6613static int volume_set_status(const u8 status)
6614{
6615 return volume_set_status_ec(status);
6616}
6617
88cc8377
HMH		 6618/* returns < 0 on error, 0 on no change, 1 on change */
6619static int __volume_set_mute_ec(const bool mute)
329e4e18
HMH		 6620{
6621 int rc;
6622 u8 s, n;
6623
6624 if (mutex_lock_killable(&volume_mutex) < 0)
6625 return -EINTR;
6626
6627 rc = volume_get_status_ec(&s);
6628 if (rc)
6629 goto unlock;
6630
6631 n = (mute) ? s | TP_EC_AUDIO_MUTESW_MSK :
6632 s & ~TP_EC_AUDIO_MUTESW_MSK;
6633
88cc8377 6634 if (n != s) {
329e4e18 6635 rc = volume_set_status_ec(n);
88cc8377
HMH		 6636 if (!rc)
6637 rc = 1;
6638 }
329e4e18
HMH		 6639
6640unlock:
6641 mutex_unlock(&volume_mutex);
6642 return rc;
6643}
6644
88cc8377
HMH		 6645static int volume_alsa_set_mute(const bool mute)
6646{
6647 dbg_printk(TPACPI_DBG_MIXER, "ALSA: trying to %smute\n",
6648 (mute) ? "" : "un");
6649 return __volume_set_mute_ec(mute);
6650}
6651
329e4e18
HMH		 6652static int volume_set_mute(const bool mute)
6653{
88cc8377
HMH		 6654 int rc;
6655
329e4e18
HMH		 6656 dbg_printk(TPACPI_DBG_MIXER, "trying to %smute\n",
6657 (mute) ? "" : "un");
88cc8377
HMH		 6658
6659 rc = __volume_set_mute_ec(mute);
6660 return (rc < 0) ? rc : 0;
329e4e18
HMH		 6661}
6662
88cc8377
HMH		 6663/* returns < 0 on error, 0 on no change, 1 on change */
6664static int __volume_set_volume_ec(const u8 vol)
329e4e18
HMH		 6665{
6666 int rc;
6667 u8 s, n;
6668
6669 if (vol > TP_EC_VOLUME_MAX)
6670 return -EINVAL;
6671
6672 if (mutex_lock_killable(&volume_mutex) < 0)
6673 return -EINTR;
6674
6675 rc = volume_get_status_ec(&s);
6676 if (rc)
6677 goto unlock;
6678
6679 n = (s & ~TP_EC_AUDIO_LVL_MSK) | vol;
6680
88cc8377 6681 if (n != s) {
329e4e18 6682 rc = volume_set_status_ec(n);
88cc8377
HMH		 6683 if (!rc)
6684 rc = 1;
6685 }
329e4e18
HMH		 6686
6687unlock:
6688 mutex_unlock(&volume_mutex);
6689 return rc;
6690}
6691
88cc8377 6692static int volume_alsa_set_volume(const u8 vol)
329e4e18
HMH		 6693{
6694 dbg_printk(TPACPI_DBG_MIXER,
88cc8377
HMH		 6695 "ALSA: trying to set volume level to %hu\n", vol);
6696 return __volume_set_volume_ec(vol);
329e4e18
HMH		 6697}
6698
0d204c34
HMH		 6699static void volume_alsa_notify_change(void)
6700{
6701 struct tpacpi_alsa_data *d;
6702
6703 if (alsa_card && alsa_card->private_data) {
6704 d = alsa_card->private_data;
6705 if (d->ctl_mute_id)
6706 snd_ctl_notify(alsa_card,
6707 SNDRV_CTL_EVENT_MASK_VALUE,
6708 d->ctl_mute_id);
6709 if (d->ctl_vol_id)
6710 snd_ctl_notify(alsa_card,
6711 SNDRV_CTL_EVENT_MASK_VALUE,
6712 d->ctl_vol_id);
6713 }
6714}
6715
6716static int volume_alsa_vol_info(struct snd_kcontrol *kcontrol,
6717 struct snd_ctl_elem_info *uinfo)
6718{
6719 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
6720 uinfo->count = 1;
6721 uinfo->value.integer.min = 0;
6722 uinfo->value.integer.max = TP_EC_VOLUME_MAX;
6723 return 0;
6724}
6725
6726static int volume_alsa_vol_get(struct snd_kcontrol *kcontrol,
6727 struct snd_ctl_elem_value *ucontrol)
6728{
6729 u8 s;
6730 int rc;
6731
6732 rc = volume_get_status(&s);
6733 if (rc < 0)
6734 return rc;
6735
6736 ucontrol->value.integer.value[0] = s & TP_EC_AUDIO_LVL_MSK;
6737 return 0;
6738}
6739
6740static int volume_alsa_vol_put(struct snd_kcontrol *kcontrol,
6741 struct snd_ctl_elem_value *ucontrol)
6742{
38e11cde
HMH		 6743 tpacpi_disclose_usertask("ALSA", "set volume to %ld\n",
6744 ucontrol->value.integer.value[0]);
88cc8377 6745 return volume_alsa_set_volume(ucontrol->value.integer.value[0]);
0d204c34
HMH		 6746}
6747
6748#define volume_alsa_mute_info snd_ctl_boolean_mono_info
6749
6750static int volume_alsa_mute_get(struct snd_kcontrol *kcontrol,
6751 struct snd_ctl_elem_value *ucontrol)
6752{
6753 u8 s;
6754 int rc;
6755
6756 rc = volume_get_status(&s);
6757 if (rc < 0)
6758 return rc;
6759
6760 ucontrol->value.integer.value[0] =
6761 (s & TP_EC_AUDIO_MUTESW_MSK) ? 0 : 1;
6762 return 0;
6763}
6764
6765static int volume_alsa_mute_put(struct snd_kcontrol *kcontrol,
6766 struct snd_ctl_elem_value *ucontrol)
6767{
38e11cde
HMH		 6768 tpacpi_disclose_usertask("ALSA", "%smute\n",
6769 ucontrol->value.integer.value[0] ?
6770 "un" : "");
88cc8377 6771 return volume_alsa_set_mute(!ucontrol->value.integer.value[0]);
0d204c34
HMH		 6772}
6773
6774static struct snd_kcontrol_new volume_alsa_control_vol __devinitdata = {
6775 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
6776 .name = "Console Playback Volume",
6777 .index = 0,
6778 .access = SNDRV_CTL_ELEM_ACCESS_READ,
6779 .info = volume_alsa_vol_info,
6780 .get = volume_alsa_vol_get,
6781};
6782
6783static struct snd_kcontrol_new volume_alsa_control_mute __devinitdata = {
6784 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
6785 .name = "Console Playback Switch",
6786 .index = 0,
6787 .access = SNDRV_CTL_ELEM_ACCESS_READ,
6788 .info = volume_alsa_mute_info,
6789 .get = volume_alsa_mute_get,
6790};
6791
329e4e18
HMH		 6792static void volume_suspend(pm_message_t state)
6793{
6794 tpacpi_volume_checkpoint_nvram();
6795}
6796
0d204c34
HMH		 6797static void volume_resume(void)
6798{
6799 volume_alsa_notify_change();
6800}
6801
329e4e18
HMH		 6802static void volume_shutdown(void)
6803{
6804 tpacpi_volume_checkpoint_nvram();
6805}
6806
6807static void volume_exit(void)
6808{
0d204c34
HMH		 6809 if (alsa_card) {
6810 snd_card_free(alsa_card);
6811 alsa_card = NULL;
6812 }
6813
329e4e18
HMH		 6814 tpacpi_volume_checkpoint_nvram();
6815}
6816
0d204c34
HMH		 6817static int __init volume_create_alsa_mixer(void)
6818{
6819 struct snd_card *card;
6820 struct tpacpi_alsa_data *data;
6821 struct snd_kcontrol *ctl_vol;
6822 struct snd_kcontrol *ctl_mute;
6823 int rc;
6824
6825 rc = snd_card_create(alsa_index, alsa_id, THIS_MODULE,
6826 sizeof(struct tpacpi_alsa_data), &card);
74c75c18
HMH		 6827 if (rc < 0 || !card) {
6828 printk(TPACPI_ERR
6829 "Failed to create ALSA card structures: %d\n", rc);
6830 return 1;
6831 }
0d204c34
HMH		 6832
6833 BUG_ON(!card->private_data);
6834 data = card->private_data;
6835 data->card = card;
6836
6837 strlcpy(card->driver, TPACPI_ALSA_DRVNAME,
6838 sizeof(card->driver));
6839 strlcpy(card->shortname, TPACPI_ALSA_SHRTNAME,
6840 sizeof(card->shortname));
6841 snprintf(card->mixername, sizeof(card->mixername), "ThinkPad EC %s",
6842 (thinkpad_id.ec_version_str) ?
6843 thinkpad_id.ec_version_str : "(unknown)");
6844 snprintf(card->longname, sizeof(card->longname),
6845 "%s at EC reg 0x%02x, fw %s", card->shortname, TP_EC_AUDIO,
6846 (thinkpad_id.ec_version_str) ?
6847 thinkpad_id.ec_version_str : "unknown");
6848
6849 if (volume_control_allowed) {
6850 volume_alsa_control_vol.put = volume_alsa_vol_put;
6851 volume_alsa_control_vol.access =
6852 SNDRV_CTL_ELEM_ACCESS_READWRITE;
6853
6854 volume_alsa_control_mute.put = volume_alsa_mute_put;
6855 volume_alsa_control_mute.access =
6856 SNDRV_CTL_ELEM_ACCESS_READWRITE;
6857 }
6858
6859 if (!tp_features.mixer_no_level_control) {
6860 ctl_vol = snd_ctl_new1(&volume_alsa_control_vol, NULL);
6861 rc = snd_ctl_add(card, ctl_vol);
6862 if (rc < 0) {
6863 printk(TPACPI_ERR
74c75c18
HMH		 6864 "Failed to create ALSA volume control: %d\n",
6865 rc);
6866 goto err_exit;
78f81cc4 6867 }
0d204c34
HMH		 6868 data->ctl_vol_id = &ctl_vol->id;
6869 }
78f81cc4 6870
0d204c34
HMH		 6871 ctl_mute = snd_ctl_new1(&volume_alsa_control_mute, NULL);
6872 rc = snd_ctl_add(card, ctl_mute);
6873 if (rc < 0) {
74c75c18
HMH		 6874 printk(TPACPI_ERR "Failed to create ALSA mute control: %d\n",
6875 rc);
6876 goto err_exit;
0d204c34
HMH		 6877 }
6878 data->ctl_mute_id = &ctl_mute->id;
35ff8b9f 6879
0d204c34
HMH		 6880 snd_card_set_dev(card, &tpacpi_pdev->dev);
6881 rc = snd_card_register(card);
0d204c34 6882 if (rc < 0) {
74c75c18
HMH		 6883 printk(TPACPI_ERR "Failed to register ALSA card: %d\n", rc);
6884 goto err_exit;
0d204c34
HMH		 6885 }
6886
6887 alsa_card = card;
74c75c18
HMH		 6888 return 0;
6889
6890err_exit:
6891 snd_card_free(card);
6892 return 1;
0d204c34
HMH		 6893}
6894
a112ceee
HMH		 6895#define TPACPI_VOL_Q_MUTEONLY 0x0001 /* Mute-only control available */
6896#define TPACPI_VOL_Q_LEVEL 0x0002 /* Volume control available */
6897
6898static const struct tpacpi_quirk volume_quirk_table[] __initconst = {
6899 /* Whitelist volume level on all IBM by default */
6900 { .vendor = PCI_VENDOR_ID_IBM,
6901 .bios = TPACPI_MATCH_ANY,
6902 .ec = TPACPI_MATCH_ANY,
6903 .quirks = TPACPI_VOL_Q_LEVEL },
6904
6905 /* Lenovo models with volume control (needs confirmation) */
6906 TPACPI_QEC_LNV('7', 'C', TPACPI_VOL_Q_LEVEL), /* R60/i */
6907 TPACPI_QEC_LNV('7', 'E', TPACPI_VOL_Q_LEVEL), /* R60e/i */
6908 TPACPI_QEC_LNV('7', '9', TPACPI_VOL_Q_LEVEL), /* T60/p */
6909 TPACPI_QEC_LNV('7', 'B', TPACPI_VOL_Q_LEVEL), /* X60/s */
6910 TPACPI_QEC_LNV('7', 'J', TPACPI_VOL_Q_LEVEL), /* X60t */
6911 TPACPI_QEC_LNV('7', '7', TPACPI_VOL_Q_LEVEL), /* Z60 */
6912 TPACPI_QEC_LNV('7', 'F', TPACPI_VOL_Q_LEVEL), /* Z61 */
6913
6914 /* Whitelist mute-only on all Lenovo by default */
6915 { .vendor = PCI_VENDOR_ID_LENOVO,
6916 .bios = TPACPI_MATCH_ANY,
6917 .ec = TPACPI_MATCH_ANY,
6918 .quirks = TPACPI_VOL_Q_MUTEONLY }
6919};
6920
329e4e18
HMH		 6921static int __init volume_init(struct ibm_init_struct *iibm)
6922{
a112ceee 6923 unsigned long quirks;
0d204c34 6924 int rc;
a112ceee 6925
329e4e18
HMH		 6926 vdbg_printk(TPACPI_DBG_INIT, "initializing volume subdriver\n");
6927
6928 mutex_init(&volume_mutex);
6929
6930 /*
6931 * Check for module parameter bogosity, note that we
6932 * init volume_mode to TPACPI_VOL_MODE_MAX in order to be
6933 * able to detect "unspecified"
6934 */
6935 if (volume_mode > TPACPI_VOL_MODE_MAX)
6936 return -EINVAL;
6937
6938 if (volume_mode == TPACPI_VOL_MODE_UCMS_STEP) {
6939 printk(TPACPI_ERR
6940 "UCMS step volume mode not implemented, "
6941 "please contact %s\n", TPACPI_MAIL);
6942 return 1;
6943 }
6944
a112ceee
HMH		 6945 if (volume_capabilities >= TPACPI_VOL_CAP_MAX)
6946 return -EINVAL;
6947
0d204c34
HMH		 6948 /*
6949 * The ALSA mixer is our primary interface.
6950 * When disabled, don't install the subdriver at all
6951 */
6952 if (!alsa_enable) {
6953 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER,
6954 "ALSA mixer disabled by parameter, "
6955 "not loading volume subdriver...\n");
6956 return 1;
6957 }
6958
a112ceee
HMH		 6959 quirks = tpacpi_check_quirks(volume_quirk_table,
6960 ARRAY_SIZE(volume_quirk_table));
6961
6962 switch (volume_capabilities) {
6963 case TPACPI_VOL_CAP_AUTO:
6964 if (quirks & TPACPI_VOL_Q_MUTEONLY)
6965 tp_features.mixer_no_level_control = 1;
6966 else if (quirks & TPACPI_VOL_Q_LEVEL)
6967 tp_features.mixer_no_level_control = 0;
6968 else
6969 return 1; /* no mixer */
6970 break;
6971 case TPACPI_VOL_CAP_VOLMUTE:
6972 tp_features.mixer_no_level_control = 0;
6973 break;
6974 case TPACPI_VOL_CAP_MUTEONLY:
6975 tp_features.mixer_no_level_control = 1;
6976 break;
6977 default:
6978 return 1;
6979 }
6980
6981 if (volume_capabilities != TPACPI_VOL_CAP_AUTO)
6982 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER,
6983 "using user-supplied volume_capabilities=%d\n",
6984 volume_capabilities);
6985
329e4e18
HMH		 6986 if (volume_mode == TPACPI_VOL_MODE_AUTO ||
6987 volume_mode == TPACPI_VOL_MODE_MAX) {
6988 volume_mode = TPACPI_VOL_MODE_ECNVRAM;
6989
6990 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER,
6991 "driver auto-selected volume_mode=%d\n",
6992 volume_mode);
6993 } else {
6994 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER,
6995 "using user-supplied volume_mode=%d\n",
6996 volume_mode);
6997 }
6998
6999 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER,
a112ceee
HMH		 7000 "mute is supported, volume control is %s\n",
7001 str_supported(!tp_features.mixer_no_level_control));
329e4e18 7002
0d204c34
HMH		 7003 rc = volume_create_alsa_mixer();
7004 if (rc) {
7005 printk(TPACPI_ERR
7006 "Could not create the ALSA mixer interface\n");
7007 return rc;
7008 }
7009
c7ac6291
HMH		 7010 printk(TPACPI_INFO
7011 "Console audio control enabled, mode: %s\n",
7012 (volume_control_allowed) ?
7013 "override (read/write)" :
7014 "monitor (read only)");
7015
0d204c34
HMH		 7016 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER,
7017 "registering volume hotkeys as change notification\n");
7018 tpacpi_hotkey_driver_mask_set(hotkey_driver_mask
7019 | TP_ACPI_HKEY_VOLUP_MASK
7020 | TP_ACPI_HKEY_VOLDWN_MASK
7021 | TP_ACPI_HKEY_MUTE_MASK);
7022
329e4e18
HMH		 7023 return 0;
7024}
f74a27d4 7025
887965e6 7026static int volume_read(struct seq_file *m)
78f81cc4 7027{
329e4e18 7028 u8 status;
78f81cc4 7029
329e4e18 7030 if (volume_get_status(&status) < 0) {
887965e6 7031 seq_printf(m, "level:\t\tunreadable\n");
78f81cc4 7032 } else {
a112ceee 7033 if (tp_features.mixer_no_level_control)
887965e6 7034 seq_printf(m, "level:\t\tunsupported\n");
a112ceee 7035 else
887965e6 7036 seq_printf(m, "level:\t\t%d\n",
a112ceee
HMH		 7037 status & TP_EC_AUDIO_LVL_MSK);
7038
887965e6 7039 seq_printf(m, "mute:\t\t%s\n",
329e4e18 7040 onoff(status, TP_EC_AUDIO_MUTESW));
a112ceee 7041
c7ac6291 7042 if (volume_control_allowed) {
887965e6 7043 seq_printf(m, "commands:\tunmute, mute\n");
c7ac6291 7044 if (!tp_features.mixer_no_level_control) {
887965e6 7045 seq_printf(m,
c7ac6291 7046 "commands:\tup, down\n");
887965e6 7047 seq_printf(m,
c7ac6291
HMH		 7048 "commands:\tlevel <level>"
7049 " (<level> is 0-%d)\n",
7050 TP_EC_VOLUME_MAX);
7051 }
78f81cc4
BD		 7052 }
7053 }
7054
7055 return 0;
7056}
7057
78f81cc4
BD		 7058static int volume_write(char *buf)
7059{
329e4e18
HMH		 7060 u8 s;
7061 u8 new_level, new_mute;
7062 int l;
78f81cc4 7063 char *cmd;
329e4e18 7064 int rc;
78f81cc4 7065
c7ac6291
HMH		 7066 /*
7067 * We do allow volume control at driver startup, so that the
7068 * user can set initial state through the volume=... parameter hack.
7069 */
7070 if (!volume_control_allowed && tpacpi_lifecycle != TPACPI_LIFE_INIT) {
7071 if (unlikely(!tp_warned.volume_ctrl_forbidden)) {
7072 tp_warned.volume_ctrl_forbidden = 1;
7073 printk(TPACPI_NOTICE
7074 "Console audio control in monitor mode, "
7075 "changes are not allowed.\n");
7076 printk(TPACPI_NOTICE
7077 "Use the volume_control=1 module parameter "
7078 "to enable volume control\n");
7079 }
7080 return -EPERM;
7081 }
7082
329e4e18
HMH		 7083 rc = volume_get_status(&s);
7084 if (rc < 0)
7085 return rc;
78f81cc4 7086
329e4e18
HMH		 7087 new_level = s & TP_EC_AUDIO_LVL_MSK;
7088 new_mute = s & TP_EC_AUDIO_MUTESW_MSK;
7089
7090 while ((cmd = next_cmd(&buf))) {
a112ceee
HMH		 7091 if (!tp_features.mixer_no_level_control) {
7092 if (strlencmp(cmd, "up") == 0) {
7093 if (new_mute)
7094 new_mute = 0;
7095 else if (new_level < TP_EC_VOLUME_MAX)
7096 new_level++;
7097 continue;
7098 } else if (strlencmp(cmd, "down") == 0) {
7099 if (new_mute)
7100 new_mute = 0;
7101 else if (new_level > 0)
7102 new_level--;
7103 continue;
7104 } else if (sscanf(cmd, "level %u", &l) == 1 &&
7105 l >= 0 && l <= TP_EC_VOLUME_MAX) {
7106 new_level = l;
7107 continue;
7108 }
7109 }
7110 if (strlencmp(cmd, "mute") == 0)
329e4e18 7111 new_mute = TP_EC_AUDIO_MUTESW_MSK;
a112ceee
HMH		 7112 else if (strlencmp(cmd, "unmute") == 0)
7113 new_mute = 0;
7114 else
1da177e4 7115 return -EINVAL;
329e4e18 7116 }
1da177e4 7117
a112ceee
HMH		 7118 if (tp_features.mixer_no_level_control) {
7119 tpacpi_disclose_usertask("procfs volume", "%smute\n",
7120 new_mute ? "" : "un");
7121 rc = volume_set_mute(!!new_mute);
7122 } else {
7123 tpacpi_disclose_usertask("procfs volume",
7124 "%smute and set level to %d\n",
7125 new_mute ? "" : "un", new_level);
7126 rc = volume_set_status(new_mute | new_level);
7127 }
0d204c34 7128 volume_alsa_notify_change();
78f81cc4 7129
329e4e18 7130 return (rc == -EINTR) ? -ERESTARTSYS : rc;
78f81cc4
BD		 7131}
7132
a5763f22
HMH		 7133static struct ibm_struct volume_driver_data = {
7134 .name = "volume",
7135 .read = volume_read,
7136 .write = volume_write,
329e4e18
HMH		 7137 .exit = volume_exit,
7138 .suspend = volume_suspend,
0d204c34 7139 .resume = volume_resume,
329e4e18 7140 .shutdown = volume_shutdown,
a5763f22 7141};
56b6aeb0 7142
ff850c33
HMH		 7143#else /* !CONFIG_THINKPAD_ACPI_ALSA_SUPPORT */
7144
7145#define alsa_card NULL
7146
7147static void inline volume_alsa_notify_change(void)
7148{
7149}
7150
7151static int __init volume_init(struct ibm_init_struct *iibm)
7152{
7153 printk(TPACPI_INFO
7154 "volume: disabled as there is no ALSA support in this kernel\n");
7155
7156 return 1;
7157}
7158
7159static struct ibm_struct volume_driver_data = {
7160 .name = "volume",
7161};
7162
7163#endif /* CONFIG_THINKPAD_ACPI_ALSA_SUPPORT */
7164
56b6aeb0
HMH		 7165/*************************************************************************
7166 * Fan subdriver
7167 */
7168
7169/*
7170 * FAN ACCESS MODES
7171 *
efa27145 7172 * TPACPI_FAN_RD_ACPI_GFAN:
56b6aeb0
HMH		 7173 * ACPI GFAN method: returns fan level
7174 *
efa27145 7175 * see TPACPI_FAN_WR_ACPI_SFAN
f51d1a39 7176 * EC 0x2f (HFSP) not available if GFAN exists
56b6aeb0 7177 *
efa27145 7178 * TPACPI_FAN_WR_ACPI_SFAN:
56b6aeb0
HMH		 7179 * ACPI SFAN method: sets fan level, 0 (stop) to 7 (max)
7180 *
f51d1a39
HMH		 7181 * EC 0x2f (HFSP) might be available *for reading*, but do not use
7182 * it for writing.
56b6aeb0 7183 *
efa27145 7184 * TPACPI_FAN_WR_TPEC:
f51d1a39
HMH		 7185 * ThinkPad EC register 0x2f (HFSP): fan control loop mode
7186 * Supported on almost all ThinkPads
56b6aeb0
HMH		 7187 *
7188 * Fan speed changes of any sort (including those caused by the
7189 * disengaged mode) are usually done slowly by the firmware as the
9ddc5b6f 7190 * maximum amount of fan duty cycle change per second seems to be
56b6aeb0
HMH		 7191 * limited.
7192 *
7193 * Reading is not available if GFAN exists.
7194 * Writing is not available if SFAN exists.
7195 *
7196 * Bits
7197 * 7 automatic mode engaged;
7198 * (default operation mode of the ThinkPad)
7199 * fan level is ignored in this mode.
f51d1a39 7200 * 6 full speed mode (takes precedence over bit 7);
56b6aeb0 7201 * not available on all thinkpads. May disable
f51d1a39
HMH		 7202 * the tachometer while the fan controller ramps up
7203 * the speed (which can take up to a few *minutes*).
7204 * Speeds up fan to 100% duty-cycle, which is far above
7205 * the standard RPM levels. It is not impossible that
7206 * it could cause hardware damage.
56b6aeb0
HMH		 7207 * 5-3 unused in some models. Extra bits for fan level
7208 * in others, but still useless as all values above
7209 * 7 map to the same speed as level 7 in these models.
7210 * 2-0 fan level (0..7 usually)
7211 * 0x00 = stop
7212 * 0x07 = max (set when temperatures critical)
7213 * Some ThinkPads may have other levels, see
efa27145 7214 * TPACPI_FAN_WR_ACPI_FANS (X31/X40/X41)
56b6aeb0
HMH		 7215 *
7216 * FIRMWARE BUG: on some models, EC 0x2f might not be initialized at
7217 * boot. Apparently the EC does not intialize it, so unless ACPI DSDT
7218 * does so, its initial value is meaningless (0x07).
7219 *
7220 * For firmware bugs, refer to:
7221 * http://thinkwiki.org/wiki/Embedded_Controller_Firmware#Firmware_Issues
7222 *
7223 * ----
7224 *
7225 * ThinkPad EC register 0x84 (LSB), 0x85 (MSB):
7226 * Main fan tachometer reading (in RPM)
7227 *
7228 * This register is present on all ThinkPads with a new-style EC, and
7229 * it is known not to be present on the A21m/e, and T22, as there is
7230 * something else in offset 0x84 according to the ACPI DSDT. Other
7231 * ThinkPads from this same time period (and earlier) probably lack the
7232 * tachometer as well.
7233 *
877d0310 7234 * Unfortunately a lot of ThinkPads with new-style ECs but whose firmware
56b6aeb0
HMH		 7235 * was never fixed by IBM to report the EC firmware version string
7236 * probably support the tachometer (like the early X models), so
7237 * detecting it is quite hard. We need more data to know for sure.
7238 *
7239 * FIRMWARE BUG: always read 0x84 first, otherwise incorrect readings
7240 * might result.
7241 *
f51d1a39
HMH		 7242 * FIRMWARE BUG: may go stale while the EC is switching to full speed
7243 * mode.
56b6aeb0
HMH		 7244 *
7245 * For firmware bugs, refer to:
7246 * http://thinkwiki.org/wiki/Embedded_Controller_Firmware#Firmware_Issues
7247 *
d7377247
HMH		 7248 * ----
7249 *
7250 * ThinkPad EC register 0x31 bit 0 (only on select models)
7251 *
7252 * When bit 0 of EC register 0x31 is zero, the tachometer registers
7253 * show the speed of the main fan. When bit 0 of EC register 0x31
7254 * is one, the tachometer registers show the speed of the auxiliary
7255 * fan.
7256 *
7257 * Fan control seems to affect both fans, regardless of the state
7258 * of this bit.
7259 *
7260 * So far, only the firmware for the X60/X61 non-tablet versions
7261 * seem to support this (firmware TP-7M).
7262 *
efa27145 7263 * TPACPI_FAN_WR_ACPI_FANS:
56b6aeb0
HMH		 7264 * ThinkPad X31, X40, X41. Not available in the X60.
7265 *
7266 * FANS ACPI handle: takes three arguments: low speed, medium speed,
7267 * high speed. ACPI DSDT seems to map these three speeds to levels
7268 * as follows: STOP LOW LOW MED MED HIGH HIGH HIGH HIGH
7269 * (this map is stored on FAN0..FAN8 as "0,1,1,2,2,3,3,3,3")
7270 *
7271 * The speeds are stored on handles
7272 * (FANA:FAN9), (FANC:FANB), (FANE:FAND).
7273 *
af901ca1 7274 * There are three default speed sets, accessible as handles:
56b6aeb0
HMH		 7275 * FS1L,FS1M,FS1H; FS2L,FS2M,FS2H; FS3L,FS3M,FS3H
7276 *
7277 * ACPI DSDT switches which set is in use depending on various
7278 * factors.
7279 *
efa27145 7280 * TPACPI_FAN_WR_TPEC is also available and should be used to
56b6aeb0
HMH		 7281 * command the fan. The X31/X40/X41 seems to have 8 fan levels,
7282 * but the ACPI tables just mention level 7.
7283 */
7284
f74a27d4
HMH		 7285enum { /* Fan control constants */
7286 fan_status_offset = 0x2f, /* EC register 0x2f */
7287 fan_rpm_offset = 0x84, /* EC register 0x84: LSB, 0x85 MSB (RPM)
7288 * 0x84 must be read before 0x85 */
d7377247
HMH		 7289 fan_select_offset = 0x31, /* EC register 0x31 (Firmware 7M)
7290 bit 0 selects which fan is active */
f74a27d4
HMH		 7291
7292 TP_EC_FAN_FULLSPEED = 0x40, /* EC fan mode: full speed */
7293 TP_EC_FAN_AUTO = 0x80, /* EC fan mode: auto fan control */
7294
7295 TPACPI_FAN_LAST_LEVEL = 0x100, /* Use cached last-seen fan level */
7296};
7297
7298enum fan_status_access_mode {
7299 TPACPI_FAN_NONE = 0, /* No fan status or control */
7300 TPACPI_FAN_RD_ACPI_GFAN, /* Use ACPI GFAN */
7301 TPACPI_FAN_RD_TPEC, /* Use ACPI EC regs 0x2f, 0x84-0x85 */
7302};
7303
7304enum fan_control_access_mode {
7305 TPACPI_FAN_WR_NONE = 0, /* No fan control */
7306 TPACPI_FAN_WR_ACPI_SFAN, /* Use ACPI SFAN */
7307 TPACPI_FAN_WR_TPEC, /* Use ACPI EC reg 0x2f */
7308 TPACPI_FAN_WR_ACPI_FANS, /* Use ACPI FANS and EC reg 0x2f */
7309};
7310
7311enum fan_control_commands {
7312 TPACPI_FAN_CMD_SPEED = 0x0001, /* speed command */
7313 TPACPI_FAN_CMD_LEVEL = 0x0002, /* level command */
7314 TPACPI_FAN_CMD_ENABLE = 0x0004, /* enable/disable cmd,
7315 * and also watchdog cmd */
7316};
7317
7318static int fan_control_allowed;
7319
69ba91cb
HMH		 7320static enum fan_status_access_mode fan_status_access_mode;
7321static enum fan_control_access_mode fan_control_access_mode;
7322static enum fan_control_commands fan_control_commands;
78f81cc4 7323
778b4d74 7324static u8 fan_control_initial_status;
fe98a52c 7325static u8 fan_control_desired_level;
0081b162 7326static u8 fan_control_resume_level;
f74a27d4
HMH		 7327static int fan_watchdog_maxinterval;
7328
7329static struct mutex fan_mutex;
778b4d74 7330
25c68a33 7331static void fan_watchdog_fire(struct work_struct *ignored);
25c68a33 7332static DECLARE_DELAYED_WORK(fan_watchdog_task, fan_watchdog_fire);
16663a87 7333
e0c7dfe7
HMH		 7334TPACPI_HANDLE(fans, ec, "FANS"); /* X31, X40, X41 */
7335TPACPI_HANDLE(gfan, ec, "GFAN", /* 570 */
56b6aeb0
HMH		 7336 "\\FSPD", /* 600e/x, 770e, 770x */
7337 ); /* all others */
e0c7dfe7 7338TPACPI_HANDLE(sfan, ec, "SFAN", /* 570 */
56b6aeb0
HMH		 7339 "JFNS", /* 770x-JL */
7340 ); /* all others */
7341
1c2ece75
HMH		 7342/*
7343 * Unitialized HFSP quirk: ACPI DSDT and EC fail to initialize the
7344 * HFSP register at boot, so it contains 0x07 but the Thinkpad could
7345 * be in auto mode (0x80).
7346 *
7347 * This is corrected by any write to HFSP either by the driver, or
7348 * by the firmware.
7349 *
7350 * We assume 0x07 really means auto mode while this quirk is active,
7351 * as this is far more likely than the ThinkPad being in level 7,
7352 * which is only used by the firmware during thermal emergencies.
7d95a3d5
HMH		 7353 *
7354 * Enable for TP-1Y (T43), TP-78 (R51e), TP-76 (R52),
7355 * TP-70 (T43, R52), which are known to be buggy.
1c2ece75
HMH		 7356 */
7357
7d95a3d5 7358static void fan_quirk1_setup(void)
1c2ece75 7359{
1c2ece75 7360 if (fan_control_initial_status == 0x07) {
7d95a3d5
HMH		 7361 printk(TPACPI_NOTICE
7362 "fan_init: initial fan status is unknown, "
7363 "assuming it is in auto mode\n");
7364 tp_features.fan_ctrl_status_undef = 1;
1c2ece75
HMH		 7365 }
7366}
7367
7368static void fan_quirk1_handle(u8 *fan_status)
7369{
7370 if (unlikely(tp_features.fan_ctrl_status_undef)) {
7371 if (*fan_status != fan_control_initial_status) {
7372 /* something changed the HFSP regisnter since
7373 * driver init time, so it is not undefined
7374 * anymore */
7375 tp_features.fan_ctrl_status_undef = 0;
7376 } else {
7377 /* Return most likely status. In fact, it
7378 * might be the only possible status */
7379 *fan_status = TP_EC_FAN_AUTO;
7380 }
7381 }
7382}
7383
d7377247
HMH		 7384/* Select main fan on X60/X61, NOOP on others */
7385static bool fan_select_fan1(void)
7386{
7387 if (tp_features.second_fan) {
7388 u8 val;
7389
7390 if (ec_read(fan_select_offset, &val) < 0)
7391 return false;
7392 val &= 0xFEU;
7393 if (ec_write(fan_select_offset, val) < 0)
7394 return false;
7395 }
7396 return true;
7397}
7398
7399/* Select secondary fan on X60/X61 */
7400static bool fan_select_fan2(void)
7401{
7402 u8 val;
7403
7404 if (!tp_features.second_fan)
7405 return false;
7406
7407 if (ec_read(fan_select_offset, &val) < 0)
7408 return false;
7409 val |= 0x01U;
7410 if (ec_write(fan_select_offset, val) < 0)
7411 return false;
7412
7413 return true;
7414}
7415
fe98a52c 7416/*
b21a15f6 7417 * Call with fan_mutex held
fe98a52c 7418 */
b21a15f6 7419static void fan_update_desired_level(u8 status)
fe98a52c 7420{
b21a15f6
HMH		 7421 if ((status &
7422 (TP_EC_FAN_AUTO | TP_EC_FAN_FULLSPEED)) == 0) {
7423 if (status > 7)
7424 fan_control_desired_level = 7;
7425 else
7426 fan_control_desired_level = status;
7427 }
7428}
fe98a52c 7429
b21a15f6
HMH		 7430static int fan_get_status(u8 *status)
7431{
7432 u8 s;
fe98a52c 7433
b21a15f6
HMH		 7434 /* TODO:
7435 * Add TPACPI_FAN_RD_ACPI_FANS ? */
fe98a52c 7436
b21a15f6
HMH		 7437 switch (fan_status_access_mode) {
7438 case TPACPI_FAN_RD_ACPI_GFAN:
7439 /* 570, 600e/x, 770e, 770x */
fe98a52c 7440
b21a15f6
HMH		 7441 if (unlikely(!acpi_evalf(gfan_handle, &s, NULL, "d")))
7442 return -EIO;
fe98a52c 7443
b21a15f6
HMH		 7444 if (likely(status))
7445 *status = s & 0x07;
fe98a52c 7446
b21a15f6
HMH		 7447 break;
7448
7449 case TPACPI_FAN_RD_TPEC:
7450 /* all except 570, 600e/x, 770e, 770x */
7451 if (unlikely(!acpi_ec_read(fan_status_offset, &s)))
7452 return -EIO;
7453
1c2ece75 7454 if (likely(status)) {
b21a15f6 7455 *status = s;
1c2ece75
HMH		 7456 fan_quirk1_handle(status);
7457 }
fe98a52c 7458
fe98a52c 7459 break;
b21a15f6 7460
fe98a52c 7461 default:
b21a15f6 7462 return -ENXIO;
fe98a52c
HMH		 7463 }
7464
b21a15f6
HMH		 7465 return 0;
7466}
fe98a52c 7467
b21a15f6
HMH		 7468static int fan_get_status_safe(u8 *status)
7469{
7470 int rc;
7471 u8 s;
fe98a52c 7472
7646ea88 7473 if (mutex_lock_killable(&fan_mutex))
b21a15f6
HMH		 7474 return -ERESTARTSYS;
7475 rc = fan_get_status(&s);
7476 if (!rc)
7477 fan_update_desired_level(s);
7478 mutex_unlock(&fan_mutex);
fe98a52c 7479
b21a15f6
HMH		 7480 if (status)
7481 *status = s;
fe98a52c 7482
b21a15f6
HMH		 7483 return rc;
7484}
7485
7486static int fan_get_speed(unsigned int *speed)
fe98a52c 7487{
b21a15f6 7488 u8 hi, lo;
fe98a52c 7489
b21a15f6
HMH		 7490 switch (fan_status_access_mode) {
7491 case TPACPI_FAN_RD_TPEC:
7492 /* all except 570, 600e/x, 770e, 770x */
d7377247
HMH		 7493 if (unlikely(!fan_select_fan1()))
7494 return -EIO;
b21a15f6
HMH		 7495 if (unlikely(!acpi_ec_read(fan_rpm_offset, &lo) ||
7496 !acpi_ec_read(fan_rpm_offset + 1, &hi)))
7497 return -EIO;
fe98a52c 7498
b21a15f6
HMH		 7499 if (likely(speed))
7500 *speed = (hi << 8) | lo;
fe98a52c 7501
b21a15f6 7502 break;
fe98a52c 7503
b21a15f6
HMH		 7504 default:
7505 return -ENXIO;
7506 }
fe98a52c 7507
b21a15f6 7508 return 0;
fe98a52c
HMH		 7509}
7510
d7377247
HMH		 7511static int fan2_get_speed(unsigned int *speed)
7512{
7513 u8 hi, lo;
7514 bool rc;
7515
7516 switch (fan_status_access_mode) {
7517 case TPACPI_FAN_RD_TPEC:
7518 /* all except 570, 600e/x, 770e, 770x */
7519 if (unlikely(!fan_select_fan2()))
7520 return -EIO;
7521 rc = !acpi_ec_read(fan_rpm_offset, &lo) ||
7522 !acpi_ec_read(fan_rpm_offset + 1, &hi);
7523 fan_select_fan1(); /* play it safe */
7524 if (rc)
7525 return -EIO;
7526
7527 if (likely(speed))
7528 *speed = (hi << 8) | lo;
7529
7530 break;
7531
7532 default:
7533 return -ENXIO;
7534 }
7535
7536 return 0;
7537}
7538
b21a15f6 7539static int fan_set_level(int level)
fe98a52c 7540{
b21a15f6
HMH		 7541 if (!fan_control_allowed)
7542 return -EPERM;
fe98a52c 7543
b21a15f6
HMH		 7544 switch (fan_control_access_mode) {
7545 case TPACPI_FAN_WR_ACPI_SFAN:
7546 if (level >= 0 && level <= 7) {
7547 if (!acpi_evalf(sfan_handle, NULL, NULL, "vd", level))
7548 return -EIO;
7549 } else
7550 return -EINVAL;
7551 break;
fe98a52c 7552
b21a15f6
HMH		 7553 case TPACPI_FAN_WR_ACPI_FANS:
7554 case TPACPI_FAN_WR_TPEC:
0081b162
HMH		 7555 if (!(level & TP_EC_FAN_AUTO) &&
7556 !(level & TP_EC_FAN_FULLSPEED) &&
b21a15f6
HMH		 7557 ((level < 0) || (level > 7)))
7558 return -EINVAL;
fe98a52c 7559
b21a15f6
HMH		 7560 /* safety net should the EC not support AUTO
7561 * or FULLSPEED mode bits and just ignore them */
7562 if (level & TP_EC_FAN_FULLSPEED)
7563 level |= 7; /* safety min speed 7 */
547266e4 7564 else if (level & TP_EC_FAN_AUTO)
b21a15f6 7565 level |= 4; /* safety min speed 4 */
fe98a52c 7566
b21a15f6
HMH		 7567 if (!acpi_ec_write(fan_status_offset, level))
7568 return -EIO;
7569 else
7570 tp_features.fan_ctrl_status_undef = 0;
7571 break;
fe98a52c 7572
b21a15f6
HMH		 7573 default:
7574 return -ENXIO;
7575 }
74a60c0f
HMH		 7576
7577 vdbg_printk(TPACPI_DBG_FAN,
7578 "fan control: set fan control register to 0x%02x\n", level);
b21a15f6 7579 return 0;
fe98a52c
HMH		 7580}
7581
b21a15f6 7582static int fan_set_level_safe(int level)
fe98a52c 7583{
b21a15f6 7584 int rc;
fe98a52c 7585
b21a15f6
HMH		 7586 if (!fan_control_allowed)
7587 return -EPERM;
fe98a52c 7588
7646ea88 7589 if (mutex_lock_killable(&fan_mutex))
b21a15f6 7590 return -ERESTARTSYS;
fe98a52c 7591
b21a15f6
HMH		 7592 if (level == TPACPI_FAN_LAST_LEVEL)
7593 level = fan_control_desired_level;
fe98a52c 7594
b21a15f6
HMH		 7595 rc = fan_set_level(level);
7596 if (!rc)
7597 fan_update_desired_level(level);
7598
7599 mutex_unlock(&fan_mutex);
7600 return rc;
fe98a52c
HMH		 7601}
7602
b21a15f6 7603static int fan_set_enable(void)
fe98a52c 7604{
b21a15f6
HMH		 7605 u8 s;
7606 int rc;
fe98a52c 7607
ecf2a80a
HMH		 7608 if (!fan_control_allowed)
7609 return -EPERM;
7610
7646ea88 7611 if (mutex_lock_killable(&fan_mutex))
b21a15f6 7612 return -ERESTARTSYS;
fe98a52c 7613
b21a15f6
HMH		 7614 switch (fan_control_access_mode) {
7615 case TPACPI_FAN_WR_ACPI_FANS:
7616 case TPACPI_FAN_WR_TPEC:
7617 rc = fan_get_status(&s);
7618 if (rc < 0)
7619 break;
fe98a52c 7620
b21a15f6
HMH		 7621 /* Don't go out of emergency fan mode */
7622 if (s != 7) {
7623 s &= 0x07;
7624 s |= TP_EC_FAN_AUTO | 4; /* min fan speed 4 */
7625 }
fe98a52c 7626
b21a15f6
HMH		 7627 if (!acpi_ec_write(fan_status_offset, s))
7628 rc = -EIO;
7629 else {
7630 tp_features.fan_ctrl_status_undef = 0;
7631 rc = 0;
7632 }
7633 break;
fe98a52c 7634
b21a15f6
HMH		 7635 case TPACPI_FAN_WR_ACPI_SFAN:
7636 rc = fan_get_status(&s);
7637 if (rc < 0)
7638 break;
fe98a52c 7639
b21a15f6 7640 s &= 0x07;
fe98a52c 7641
b21a15f6
HMH		 7642 /* Set fan to at least level 4 */
7643 s |= 4;
fe08bc4b 7644
b21a15f6 7645 if (!acpi_evalf(sfan_handle, NULL, NULL, "vd", s))
35ff8b9f 7646 rc = -EIO;
b21a15f6
HMH		 7647 else
7648 rc = 0;
7649 break;
78f81cc4 7650
b21a15f6
HMH		 7651 default:
7652 rc = -ENXIO;
7653 }
5fba344c 7654
b21a15f6 7655 mutex_unlock(&fan_mutex);
74a60c0f
HMH		 7656
7657 if (!rc)
7658 vdbg_printk(TPACPI_DBG_FAN,
7659 "fan control: set fan control register to 0x%02x\n",
7660 s);
b21a15f6 7661 return rc;
69ba91cb 7662}
78f81cc4 7663
b21a15f6 7664static int fan_set_disable(void)
78f81cc4 7665{
b21a15f6 7666 int rc;
c52f0aa5 7667
b21a15f6
HMH		 7668 if (!fan_control_allowed)
7669 return -EPERM;
78f81cc4 7670
7646ea88 7671 if (mutex_lock_killable(&fan_mutex))
b21a15f6 7672 return -ERESTARTSYS;
3ef8a609 7673
b21a15f6
HMH		 7674 rc = 0;
7675 switch (fan_control_access_mode) {
7676 case TPACPI_FAN_WR_ACPI_FANS:
7677 case TPACPI_FAN_WR_TPEC:
7678 if (!acpi_ec_write(fan_status_offset, 0x00))
7679 rc = -EIO;
7680 else {
7681 fan_control_desired_level = 0;
7682 tp_features.fan_ctrl_status_undef = 0;
7683 }
3ef8a609
HMH		 7684 break;
7685
b21a15f6
HMH		 7686 case TPACPI_FAN_WR_ACPI_SFAN:
7687 if (!acpi_evalf(sfan_handle, NULL, NULL, "vd", 0x00))
7688 rc = -EIO;
7689 else
7690 fan_control_desired_level = 0;
c52f0aa5
HMH		 7691 break;
7692
7693 default:
b21a15f6 7694 rc = -ENXIO;
78f81cc4
BD		 7695 }
7696
74a60c0f
HMH		 7697 if (!rc)
7698 vdbg_printk(TPACPI_DBG_FAN,
7699 "fan control: set fan control register to 0\n");
fe98a52c 7700
fe98a52c 7701 mutex_unlock(&fan_mutex);
fe98a52c
HMH		 7702 return rc;
7703}
7704
b21a15f6 7705static int fan_set_speed(int speed)
c52f0aa5 7706{
b21a15f6 7707 int rc;
c52f0aa5 7708
b21a15f6
HMH		 7709 if (!fan_control_allowed)
7710 return -EPERM;
3ef8a609 7711
7646ea88 7712 if (mutex_lock_killable(&fan_mutex))
b21a15f6 7713 return -ERESTARTSYS;
c52f0aa5 7714
b21a15f6
HMH		 7715 rc = 0;
7716 switch (fan_control_access_mode) {
7717 case TPACPI_FAN_WR_ACPI_FANS:
7718 if (speed >= 0 && speed <= 65535) {
7719 if (!acpi_evalf(fans_handle, NULL, NULL, "vddd",
7720 speed, speed, speed))
7721 rc = -EIO;
7722 } else
7723 rc = -EINVAL;
c52f0aa5
HMH		 7724 break;
7725
7726 default:
b21a15f6 7727 rc = -ENXIO;
c52f0aa5
HMH		 7728 }
7729
b21a15f6
HMH		 7730 mutex_unlock(&fan_mutex);
7731 return rc;
16663a87
HMH		 7732}
7733
7734static void fan_watchdog_reset(void)
7735{
94954cc6 7736 static int fan_watchdog_active;
16663a87 7737
4985cd0a
HMH		 7738 if (fan_control_access_mode == TPACPI_FAN_WR_NONE)
7739 return;
7740
16663a87
HMH		 7741 if (fan_watchdog_active)
7742 cancel_delayed_work(&fan_watchdog_task);
7743
8fef502e
HMH		 7744 if (fan_watchdog_maxinterval > 0 &&
7745 tpacpi_lifecycle != TPACPI_LIFE_EXITING) {
16663a87 7746 fan_watchdog_active = 1;
e0e3c061 7747 if (!queue_delayed_work(tpacpi_wq, &fan_watchdog_task,
16663a87
HMH		 7748 msecs_to_jiffies(fan_watchdog_maxinterval
7749 * 1000))) {
35ff8b9f 7750 printk(TPACPI_ERR
e0e3c061 7751 "failed to queue the fan watchdog, "
16663a87
HMH		 7752 "watchdog will not trigger\n");
7753 }
7754 } else
7755 fan_watchdog_active = 0;
7756}
7757
b21a15f6 7758static void fan_watchdog_fire(struct work_struct *ignored)
78f81cc4 7759{
b21a15f6 7760 int rc;
18ad7996 7761
b21a15f6
HMH		 7762 if (tpacpi_lifecycle != TPACPI_LIFE_RUNNING)
7763 return;
a12095c2 7764
e0c7dfe7 7765 printk(TPACPI_NOTICE "fan watchdog: enabling fan\n");
b21a15f6
HMH		 7766 rc = fan_set_enable();
7767 if (rc < 0) {
e0c7dfe7 7768 printk(TPACPI_ERR "fan watchdog: error %d while enabling fan, "
b21a15f6
HMH		 7769 "will try again later...\n", -rc);
7770 /* reschedule for later */
7771 fan_watchdog_reset();
7772 }
7773}
eaa7571b 7774
b21a15f6
HMH		 7775/*
7776 * SYSFS fan layout: hwmon compatible (device)
7777 *
7778 * pwm*_enable:
7779 * 0: "disengaged" mode
7780 * 1: manual mode
7781 * 2: native EC "auto" mode (recommended, hardware default)
7782 *
7783 * pwm*: set speed in manual mode, ignored otherwise.
7784 * 0 is level 0; 255 is level 7. Intermediate points done with linear
7785 * interpolation.
7786 *
7787 * fan*_input: tachometer reading, RPM
7788 *
7789 *
7790 * SYSFS fan layout: extensions
7791 *
7792 * fan_watchdog (driver):
7793 * fan watchdog interval in seconds, 0 disables (default), max 120
7794 */
7795
7796/* sysfs fan pwm1_enable ----------------------------------------------- */
7797static ssize_t fan_pwm1_enable_show(struct device *dev,
7798 struct device_attribute *attr,
7799 char *buf)
7800{
7801 int res, mode;
7802 u8 status;
7803
7804 res = fan_get_status_safe(&status);
7805 if (res)
7806 return res;
7807
b21a15f6
HMH		 7808 if (status & TP_EC_FAN_FULLSPEED) {
7809 mode = 0;
7810 } else if (status & TP_EC_FAN_AUTO) {
7811 mode = 2;
7812 } else
7813 mode = 1;
7814
7815 return snprintf(buf, PAGE_SIZE, "%d\n", mode);
7816}
a12095c2 7817
b21a15f6
HMH		 7818static ssize_t fan_pwm1_enable_store(struct device *dev,
7819 struct device_attribute *attr,
7820 const char *buf, size_t count)
7821{
7822 unsigned long t;
7823 int res, level;
7824
7825 if (parse_strtoul(buf, 2, &t))
7826 return -EINVAL;
7827
74a60c0f
HMH		 7828 tpacpi_disclose_usertask("hwmon pwm1_enable",
7829 "set fan mode to %lu\n", t);
7830
b21a15f6
HMH		 7831 switch (t) {
7832 case 0:
7833 level = TP_EC_FAN_FULLSPEED;
7834 break;
7835 case 1:
7836 level = TPACPI_FAN_LAST_LEVEL;
7837 break;
7838 case 2:
7839 level = TP_EC_FAN_AUTO;
7840 break;
7841 case 3:
7842 /* reserved for software-controlled auto mode */
7843 return -ENOSYS;
18ad7996 7844 default:
b21a15f6 7845 return -EINVAL;
18ad7996 7846 }
b21a15f6
HMH		 7847
7848 res = fan_set_level_safe(level);
7849 if (res == -ENXIO)
7850 return -EINVAL;
7851 else if (res < 0)
7852 return res;
7853
7854 fan_watchdog_reset();
7855
7856 return count;
18ad7996
HMH		 7857}
7858
b21a15f6
HMH		 7859static struct device_attribute dev_attr_fan_pwm1_enable =
7860 __ATTR(pwm1_enable, S_IWUSR | S_IRUGO,
7861 fan_pwm1_enable_show, fan_pwm1_enable_store);
7862
7863/* sysfs fan pwm1 ------------------------------------------------------ */
7864static ssize_t fan_pwm1_show(struct device *dev,
7865 struct device_attribute *attr,
7866 char *buf)
fe98a52c 7867{
b21a15f6
HMH		 7868 int res;
7869 u8 status;
fe98a52c 7870
b21a15f6
HMH		 7871 res = fan_get_status_safe(&status);
7872 if (res)
7873 return res;
ecf2a80a 7874
b21a15f6
HMH		 7875 if ((status &
7876 (TP_EC_FAN_AUTO | TP_EC_FAN_FULLSPEED)) != 0)
7877 status = fan_control_desired_level;
fe98a52c 7878
b21a15f6
HMH		 7879 if (status > 7)
7880 status = 7;
fe98a52c 7881
b21a15f6 7882 return snprintf(buf, PAGE_SIZE, "%u\n", (status * 255) / 7);
fe98a52c
HMH		 7883}
7884
b21a15f6
HMH		 7885static ssize_t fan_pwm1_store(struct device *dev,
7886 struct device_attribute *attr,
7887 const char *buf, size_t count)
18ad7996 7888{
b21a15f6 7889 unsigned long s;
1c6a334e 7890 int rc;
b21a15f6 7891 u8 status, newlevel;
1c6a334e 7892
b21a15f6
HMH		 7893 if (parse_strtoul(buf, 255, &s))
7894 return -EINVAL;
7895
74a60c0f
HMH		 7896 tpacpi_disclose_usertask("hwmon pwm1",
7897 "set fan speed to %lu\n", s);
7898
b21a15f6
HMH		 7899 /* scale down from 0-255 to 0-7 */
7900 newlevel = (s >> 5) & 0x07;
ecf2a80a 7901
7646ea88 7902 if (mutex_lock_killable(&fan_mutex))
fc589a3c 7903 return -ERESTARTSYS;
40ca9fdf 7904
b21a15f6
HMH		 7905 rc = fan_get_status(&status);
7906 if (!rc && (status &
7907 (TP_EC_FAN_AUTO | TP_EC_FAN_FULLSPEED)) == 0) {
7908 rc = fan_set_level(newlevel);
7909 if (rc == -ENXIO)
7910 rc = -EINVAL;
7911 else if (!rc) {
7912 fan_update_desired_level(newlevel);
7913 fan_watchdog_reset();
eaa7571b 7914 }
b21a15f6 7915 }
1c6a334e 7916
b21a15f6
HMH		 7917 mutex_unlock(&fan_mutex);
7918 return (rc)? rc : count;
7919}
1c6a334e 7920
b21a15f6
HMH		 7921static struct device_attribute dev_attr_fan_pwm1 =
7922 __ATTR(pwm1, S_IWUSR | S_IRUGO,
7923 fan_pwm1_show, fan_pwm1_store);
1c6a334e 7924
b21a15f6
HMH		 7925/* sysfs fan fan1_input ------------------------------------------------ */
7926static ssize_t fan_fan1_input_show(struct device *dev,
7927 struct device_attribute *attr,
7928 char *buf)
7929{
7930 int res;
7931 unsigned int speed;
1c6a334e 7932
b21a15f6
HMH		 7933 res = fan_get_speed(&speed);
7934 if (res < 0)
7935 return res;
1c6a334e 7936
b21a15f6
HMH		 7937 return snprintf(buf, PAGE_SIZE, "%u\n", speed);
7938}
18ad7996 7939
b21a15f6
HMH		 7940static struct device_attribute dev_attr_fan_fan1_input =
7941 __ATTR(fan1_input, S_IRUGO,
7942 fan_fan1_input_show, NULL);
40ca9fdf 7943
d7377247
HMH		 7944/* sysfs fan fan2_input ------------------------------------------------ */
7945static ssize_t fan_fan2_input_show(struct device *dev,
7946 struct device_attribute *attr,
7947 char *buf)
7948{
7949 int res;
7950 unsigned int speed;
7951
7952 res = fan2_get_speed(&speed);
7953 if (res < 0)
7954 return res;
7955
7956 return snprintf(buf, PAGE_SIZE, "%u\n", speed);
7957}
7958
7959static struct device_attribute dev_attr_fan_fan2_input =
7960 __ATTR(fan2_input, S_IRUGO,
7961 fan_fan2_input_show, NULL);
7962
b21a15f6
HMH		 7963/* sysfs fan fan_watchdog (hwmon driver) ------------------------------- */
7964static ssize_t fan_fan_watchdog_show(struct device_driver *drv,
7965 char *buf)
7966{
7967 return snprintf(buf, PAGE_SIZE, "%u\n", fan_watchdog_maxinterval);
18ad7996
HMH		 7968}
7969
b21a15f6
HMH		 7970static ssize_t fan_fan_watchdog_store(struct device_driver *drv,
7971 const char *buf, size_t count)
18ad7996 7972{
b21a15f6
HMH		 7973 unsigned long t;
7974
7975 if (parse_strtoul(buf, 120, &t))
7976 return -EINVAL;
40ca9fdf 7977
ecf2a80a
HMH		 7978 if (!fan_control_allowed)
7979 return -EPERM;
7980
b21a15f6
HMH		 7981 fan_watchdog_maxinterval = t;
7982 fan_watchdog_reset();
40ca9fdf 7983
74a60c0f
HMH		 7984 tpacpi_disclose_usertask("fan_watchdog", "set to %lu\n", t);
7985
b21a15f6
HMH		 7986 return count;
7987}
7988
7989static DRIVER_ATTR(fan_watchdog, S_IWUSR | S_IRUGO,
7990 fan_fan_watchdog_show, fan_fan_watchdog_store);
7991
7992/* --------------------------------------------------------------------- */
7993static struct attribute *fan_attributes[] = {
7994 &dev_attr_fan_pwm1_enable.attr, &dev_attr_fan_pwm1.attr,
7995 &dev_attr_fan_fan1_input.attr,
d7377247 7996 NULL, /* for fan2_input */
b21a15f6
HMH		 7997 NULL
7998};
7999
8000static const struct attribute_group fan_attr_group = {
8001 .attrs = fan_attributes,
8002};
8003
d7377247
HMH		 8004#define TPACPI_FAN_Q1 0x0001 /* Unitialized HFSP */
8005#define TPACPI_FAN_2FAN 0x0002 /* EC 0x31 bit 0 selects fan2 */
7d95a3d5
HMH		 8006
8007#define TPACPI_FAN_QI(__id1, __id2, __quirks) \
8008 { .vendor = PCI_VENDOR_ID_IBM, \
8009 .bios = TPACPI_MATCH_ANY, \
8010 .ec = TPID(__id1, __id2), \
8011 .quirks = __quirks }
8012
d7377247
HMH		 8013#define TPACPI_FAN_QL(__id1, __id2, __quirks) \
8014 { .vendor = PCI_VENDOR_ID_LENOVO, \
8015 .bios = TPACPI_MATCH_ANY, \
8016 .ec = TPID(__id1, __id2), \
8017 .quirks = __quirks }
8018
7d95a3d5
HMH		 8019static const struct tpacpi_quirk fan_quirk_table[] __initconst = {
8020 TPACPI_FAN_QI('1', 'Y', TPACPI_FAN_Q1),
8021 TPACPI_FAN_QI('7', '8', TPACPI_FAN_Q1),
8022 TPACPI_FAN_QI('7', '6', TPACPI_FAN_Q1),
8023 TPACPI_FAN_QI('7', '0', TPACPI_FAN_Q1),
d7377247 8024 TPACPI_FAN_QL('7', 'M', TPACPI_FAN_2FAN),
7d95a3d5
HMH		 8025};
8026
d7377247 8027#undef TPACPI_FAN_QL
7d95a3d5
HMH		 8028#undef TPACPI_FAN_QI
8029
b21a15f6
HMH		 8030static int __init fan_init(struct ibm_init_struct *iibm)
8031{
8032 int rc;
7d95a3d5 8033 unsigned long quirks;
b21a15f6 8034
74a60c0f
HMH		 8035 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_FAN,
8036 "initializing fan subdriver\n");
b21a15f6
HMH		 8037
8038 mutex_init(&fan_mutex);
8039 fan_status_access_mode = TPACPI_FAN_NONE;
8040 fan_control_access_mode = TPACPI_FAN_WR_NONE;
8041 fan_control_commands = 0;
8042 fan_watchdog_maxinterval = 0;
8043 tp_features.fan_ctrl_status_undef = 0;
d7377247 8044 tp_features.second_fan = 0;
b21a15f6
HMH		 8045 fan_control_desired_level = 7;
8046
e28393c0
HMH		 8047 if (tpacpi_is_ibm()) {
8048 TPACPI_ACPIHANDLE_INIT(fans);
8049 TPACPI_ACPIHANDLE_INIT(gfan);
8050 TPACPI_ACPIHANDLE_INIT(sfan);
8051 }
b21a15f6 8052
7d95a3d5
HMH		 8053 quirks = tpacpi_check_quirks(fan_quirk_table,
8054 ARRAY_SIZE(fan_quirk_table));
8055
b21a15f6
HMH		 8056 if (gfan_handle) {
8057 /* 570, 600e/x, 770e, 770x */
8058 fan_status_access_mode = TPACPI_FAN_RD_ACPI_GFAN;
8059 } else {
8060 /* all other ThinkPads: note that even old-style
8061 * ThinkPad ECs supports the fan control register */
8062 if (likely(acpi_ec_read(fan_status_offset,
8063 &fan_control_initial_status))) {
8064 fan_status_access_mode = TPACPI_FAN_RD_TPEC;
7d95a3d5
HMH		 8065 if (quirks & TPACPI_FAN_Q1)
8066 fan_quirk1_setup();
d7377247
HMH		 8067 if (quirks & TPACPI_FAN_2FAN) {
8068 tp_features.second_fan = 1;
8069 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_FAN,
8070 "secondary fan support enabled\n");
8071 }
b21a15f6 8072 } else {
e0c7dfe7 8073 printk(TPACPI_ERR
b21a15f6
HMH		 8074 "ThinkPad ACPI EC access misbehaving, "
8075 "fan status and control unavailable\n");
8076 return 1;
8077 }
8078 }
8079
8080 if (sfan_handle) {
8081 /* 570, 770x-JL */
8082 fan_control_access_mode = TPACPI_FAN_WR_ACPI_SFAN;
8083 fan_control_commands |=
8084 TPACPI_FAN_CMD_LEVEL | TPACPI_FAN_CMD_ENABLE;
8085 } else {
8086 if (!gfan_handle) {
8087 /* gfan without sfan means no fan control */
8088 /* all other models implement TP EC 0x2f control */
8089
8090 if (fans_handle) {
8091 /* X31, X40, X41 */
8092 fan_control_access_mode =
8093 TPACPI_FAN_WR_ACPI_FANS;
8094 fan_control_commands |=
8095 TPACPI_FAN_CMD_SPEED |
8096 TPACPI_FAN_CMD_LEVEL |
8097 TPACPI_FAN_CMD_ENABLE;
8098 } else {
8099 fan_control_access_mode = TPACPI_FAN_WR_TPEC;
8100 fan_control_commands |=
8101 TPACPI_FAN_CMD_LEVEL |
8102 TPACPI_FAN_CMD_ENABLE;
8103 }
fe98a52c 8104 }
b21a15f6 8105 }
18ad7996 8106
74a60c0f
HMH		 8107 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_FAN,
8108 "fan is %s, modes %d, %d\n",
b21a15f6
HMH		 8109 str_supported(fan_status_access_mode != TPACPI_FAN_NONE ||
8110 fan_control_access_mode != TPACPI_FAN_WR_NONE),
8111 fan_status_access_mode, fan_control_access_mode);
1c6a334e 8112
b21a15f6
HMH		 8113 /* fan control master switch */
8114 if (!fan_control_allowed) {
8115 fan_control_access_mode = TPACPI_FAN_WR_NONE;
8116 fan_control_commands = 0;
74a60c0f 8117 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_FAN,
b21a15f6 8118 "fan control features disabled by parameter\n");
18ad7996 8119 }
40ca9fdf 8120
b21a15f6
HMH		 8121 /* update fan_control_desired_level */
8122 if (fan_status_access_mode != TPACPI_FAN_NONE)
8123 fan_get_status_safe(NULL);
fe98a52c 8124
b21a15f6
HMH		 8125 if (fan_status_access_mode != TPACPI_FAN_NONE ||
8126 fan_control_access_mode != TPACPI_FAN_WR_NONE) {
d7377247
HMH		 8127 if (tp_features.second_fan) {
8128 /* attach second fan tachometer */
8129 fan_attributes[ARRAY_SIZE(fan_attributes)-2] =
8130 &dev_attr_fan_fan2_input.attr;
8131 }
b21a15f6
HMH		 8132 rc = sysfs_create_group(&tpacpi_sensors_pdev->dev.kobj,
8133 &fan_attr_group);
b21a15f6
HMH		 8134 if (rc < 0)
8135 return rc;
9c0a76e1
HMH		 8136
8137 rc = driver_create_file(&tpacpi_hwmon_pdriver.driver,
8138 &driver_attr_fan_watchdog);
8139 if (rc < 0) {
8140 sysfs_remove_group(&tpacpi_sensors_pdev->dev.kobj,
8141 &fan_attr_group);
8142 return rc;
8143 }
b21a15f6
HMH		 8144 return 0;
8145 } else
8146 return 1;
56b6aeb0
HMH		 8147}
8148
b21a15f6 8149static void fan_exit(void)
56b6aeb0 8150{
74a60c0f 8151 vdbg_printk(TPACPI_DBG_EXIT | TPACPI_DBG_FAN,
35ff8b9f 8152 "cancelling any pending fan watchdog tasks\n");
56b6aeb0 8153
b21a15f6
HMH		 8154 /* FIXME: can we really do this unconditionally? */
8155 sysfs_remove_group(&tpacpi_sensors_pdev->dev.kobj, &fan_attr_group);
35ff8b9f
HMH		 8156 driver_remove_file(&tpacpi_hwmon_pdriver.driver,
8157 &driver_attr_fan_watchdog);
40ca9fdf 8158
b21a15f6 8159 cancel_delayed_work(&fan_watchdog_task);
e0e3c061 8160 flush_workqueue(tpacpi_wq);
56b6aeb0
HMH		 8161}
8162
75700e53
HMH		 8163static void fan_suspend(pm_message_t state)
8164{
0081b162
HMH		 8165 int rc;
8166
75700e53
HMH		 8167 if (!fan_control_allowed)
8168 return;
8169
8170 /* Store fan status in cache */
0081b162
HMH		 8171 fan_control_resume_level = 0;
8172 rc = fan_get_status_safe(&fan_control_resume_level);
8173 if (rc < 0)
8174 printk(TPACPI_NOTICE
8175 "failed to read fan level for later "
8176 "restore during resume: %d\n", rc);
8177
8178 /* if it is undefined, don't attempt to restore it.
8179 * KEEP THIS LAST */
75700e53 8180 if (tp_features.fan_ctrl_status_undef)
0081b162 8181 fan_control_resume_level = 0;
75700e53
HMH		 8182}
8183
8184static void fan_resume(void)
8185{
75700e53
HMH		 8186 u8 current_level = 7;
8187 bool do_set = false;
0081b162 8188 int rc;
75700e53
HMH		 8189
8190 /* DSDT *always* updates status on resume */
8191 tp_features.fan_ctrl_status_undef = 0;
8192
75700e53 8193 if (!fan_control_allowed ||
0081b162 8194 !fan_control_resume_level ||
75700e53
HMH		 8195 (fan_get_status_safe(&current_level) < 0))
8196 return;
8197
8198 switch (fan_control_access_mode) {
8199 case TPACPI_FAN_WR_ACPI_SFAN:
0081b162
HMH		 8200 /* never decrease fan level */
8201 do_set = (fan_control_resume_level > current_level);
75700e53
HMH		 8202 break;
8203 case TPACPI_FAN_WR_ACPI_FANS:
8204 case TPACPI_FAN_WR_TPEC:
0081b162
HMH		 8205 /* never decrease fan level, scale is:
8206 * TP_EC_FAN_FULLSPEED > 7 >= TP_EC_FAN_AUTO
8207 *
8208 * We expect the firmware to set either 7 or AUTO, but we
8209 * handle FULLSPEED out of paranoia.
8210 *
8211 * So, we can safely only restore FULLSPEED or 7, anything
8212 * else could slow the fan. Restoring AUTO is useless, at
8213 * best that's exactly what the DSDT already set (it is the
8214 * slower it uses).
8215 *
8216 * Always keep in mind that the DSDT *will* have set the
8217 * fans to what the vendor supposes is the best level. We
8218 * muck with it only to speed the fan up.
8219 */
8220 if (fan_control_resume_level != 7 &&
8221 !(fan_control_resume_level & TP_EC_FAN_FULLSPEED))
8222 return;
8223 else
8224 do_set = !(current_level & TP_EC_FAN_FULLSPEED) &&
8225 (current_level != fan_control_resume_level);
75700e53
HMH		 8226 break;
8227 default:
8228 return;
8229 }
8230 if (do_set) {
8231 printk(TPACPI_NOTICE
8232 "restoring fan level to 0x%02x\n",
0081b162
HMH		 8233 fan_control_resume_level);
8234 rc = fan_set_level_safe(fan_control_resume_level);
8235 if (rc < 0)
8236 printk(TPACPI_NOTICE
8237 "failed to restore fan level: %d\n", rc);
75700e53
HMH		 8238 }
8239}
8240
887965e6 8241static int fan_read(struct seq_file *m)
56b6aeb0 8242{
56b6aeb0
HMH		 8243 int rc;
8244 u8 status;
8245 unsigned int speed = 0;
8246
8247 switch (fan_status_access_mode) {
efa27145 8248 case TPACPI_FAN_RD_ACPI_GFAN:
56b6aeb0 8249 /* 570, 600e/x, 770e, 770x */
35ff8b9f
HMH		 8250 rc = fan_get_status_safe(&status);
8251 if (rc < 0)
56b6aeb0
HMH		 8252 return rc;
8253
887965e6 8254 seq_printf(m, "status:\t\t%s\n"
56b6aeb0
HMH		 8255 "level:\t\t%d\n",
8256 (status != 0) ? "enabled" : "disabled", status);
8257 break;
8258
efa27145 8259 case TPACPI_FAN_RD_TPEC:
56b6aeb0 8260 /* all except 570, 600e/x, 770e, 770x */
35ff8b9f
HMH		 8261 rc = fan_get_status_safe(&status);
8262 if (rc < 0)
56b6aeb0
HMH		 8263 return rc;
8264
887965e6 8265 seq_printf(m, "status:\t\t%s\n",
56b6aeb0
HMH		 8266 (status != 0) ? "enabled" : "disabled");
8267
35ff8b9f
HMH		 8268 rc = fan_get_speed(&speed);
8269 if (rc < 0)
56b6aeb0
HMH		 8270 return rc;
8271
887965e6 8272 seq_printf(m, "speed:\t\t%d\n", speed);
56b6aeb0 8273
efa27145 8274 if (status & TP_EC_FAN_FULLSPEED)
56b6aeb0 8275 /* Disengaged mode takes precedence */
887965e6 8276 seq_printf(m, "level:\t\tdisengaged\n");
efa27145 8277 else if (status & TP_EC_FAN_AUTO)
887965e6 8278 seq_printf(m, "level:\t\tauto\n");
56b6aeb0 8279 else
887965e6 8280 seq_printf(m, "level:\t\t%d\n", status);
56b6aeb0
HMH		 8281 break;
8282
efa27145 8283 case TPACPI_FAN_NONE:
56b6aeb0 8284 default:
887965e6 8285 seq_printf(m, "status:\t\tnot supported\n");
56b6aeb0
HMH		 8286 }
8287
efa27145 8288 if (fan_control_commands & TPACPI_FAN_CMD_LEVEL) {
887965e6 8289 seq_printf(m, "commands:\tlevel <level>");
56b6aeb0
HMH		 8290
8291 switch (fan_control_access_mode) {
efa27145 8292 case TPACPI_FAN_WR_ACPI_SFAN:
887965e6 8293 seq_printf(m, " (<level> is 0-7)\n");
56b6aeb0
HMH		 8294 break;
8295
8296 default:
887965e6 8297 seq_printf(m, " (<level> is 0-7, "
fe98a52c 8298 "auto, disengaged, full-speed)\n");
56b6aeb0
HMH		 8299 break;
8300 }
8301 }
18ad7996 8302
efa27145 8303 if (fan_control_commands & TPACPI_FAN_CMD_ENABLE)
887965e6 8304 seq_printf(m, "commands:\tenable, disable\n"
35ff8b9f
HMH		 8305 "commands:\twatchdog <timeout> (<timeout> "
8306 "is 0 (off), 1-120 (seconds))\n");
1da177e4 8307
efa27145 8308 if (fan_control_commands & TPACPI_FAN_CMD_SPEED)
887965e6 8309 seq_printf(m, "commands:\tspeed <speed>"
56b6aeb0
HMH		 8310 " (<speed> is 0-65535)\n");
8311
887965e6 8312 return 0;
78f81cc4
BD		 8313}
8314
18ad7996
HMH		 8315static int fan_write_cmd_level(const char *cmd, int *rc)
8316{
8317 int level;
8318
a12095c2 8319 if (strlencmp(cmd, "level auto") == 0)
efa27145 8320 level = TP_EC_FAN_AUTO;
fe98a52c 8321 else if ((strlencmp(cmd, "level disengaged") == 0) |
35ff8b9f 8322 (strlencmp(cmd, "level full-speed") == 0))
efa27145 8323 level = TP_EC_FAN_FULLSPEED;
a12095c2 8324 else if (sscanf(cmd, "level %d", &level) != 1)
18ad7996
HMH		 8325 return 0;
8326
35ff8b9f
HMH		 8327 *rc = fan_set_level_safe(level);
8328 if (*rc == -ENXIO)
e0c7dfe7 8329 printk(TPACPI_ERR "level command accepted for unsupported "
18ad7996 8330 "access mode %d", fan_control_access_mode);
74a60c0f
HMH		 8331 else if (!*rc)
8332 tpacpi_disclose_usertask("procfs fan",
8333 "set level to %d\n", level);
18ad7996
HMH		 8334
8335 return 1;
8336}
8337
8338static int fan_write_cmd_enable(const char *cmd, int *rc)
8339{
8340 if (strlencmp(cmd, "enable") != 0)
8341 return 0;
8342
35ff8b9f
HMH		 8343 *rc = fan_set_enable();
8344 if (*rc == -ENXIO)
e0c7dfe7 8345 printk(TPACPI_ERR "enable command accepted for unsupported "
18ad7996 8346 "access mode %d", fan_control_access_mode);
74a60c0f
HMH		 8347 else if (!*rc)
8348 tpacpi_disclose_usertask("procfs fan", "enable\n");
18ad7996
HMH		 8349
8350 return 1;
8351}
8352
8353static int fan_write_cmd_disable(const char *cmd, int *rc)
8354{
8355 if (strlencmp(cmd, "disable") != 0)
8356 return 0;
8357
35ff8b9f
HMH		 8358 *rc = fan_set_disable();
8359 if (*rc == -ENXIO)
e0c7dfe7 8360 printk(TPACPI_ERR "disable command accepted for unsupported "
18ad7996 8361 "access mode %d", fan_control_access_mode);
74a60c0f
HMH		 8362 else if (!*rc)
8363 tpacpi_disclose_usertask("procfs fan", "disable\n");
18ad7996
HMH		 8364
8365 return 1;
8366}
8367
8368static int fan_write_cmd_speed(const char *cmd, int *rc)
8369{
8370 int speed;
8371
a8b7a662
HMH		 8372 /* TODO:
8373 * Support speed <low> <medium> <high> ? */
8374
18ad7996
HMH		 8375 if (sscanf(cmd, "speed %d", &speed) != 1)
8376 return 0;
8377
35ff8b9f
HMH		 8378 *rc = fan_set_speed(speed);
8379 if (*rc == -ENXIO)
e0c7dfe7 8380 printk(TPACPI_ERR "speed command accepted for unsupported "
18ad7996 8381 "access mode %d", fan_control_access_mode);
74a60c0f
HMH		 8382 else if (!*rc)
8383 tpacpi_disclose_usertask("procfs fan",
8384 "set speed to %d\n", speed);
18ad7996
HMH		 8385
8386 return 1;
8387}
8388
16663a87
HMH		 8389static int fan_write_cmd_watchdog(const char *cmd, int *rc)
8390{
8391 int interval;
8392
8393 if (sscanf(cmd, "watchdog %d", &interval) != 1)
8394 return 0;
8395
8396 if (interval < 0 || interval > 120)
8397 *rc = -EINVAL;
74a60c0f 8398 else {
16663a87 8399 fan_watchdog_maxinterval = interval;
74a60c0f
HMH		 8400 tpacpi_disclose_usertask("procfs fan",
8401 "set watchdog timer to %d\n",
8402 interval);
8403 }
16663a87
HMH		 8404
8405 return 1;
8406}
8407
18ad7996
HMH		 8408static int fan_write(char *buf)
8409{
8410 char *cmd;
8411 int rc = 0;
8412
8413 while (!rc && (cmd = next_cmd(&buf))) {
efa27145 8414 if (!((fan_control_commands & TPACPI_FAN_CMD_LEVEL) &&
18ad7996 8415 fan_write_cmd_level(cmd, &rc)) &&
efa27145 8416 !((fan_control_commands & TPACPI_FAN_CMD_ENABLE) &&
18ad7996 8417 (fan_write_cmd_enable(cmd, &rc) ||
16663a87
HMH		 8418 fan_write_cmd_disable(cmd, &rc) ||
8419 fan_write_cmd_watchdog(cmd, &rc))) &&
efa27145 8420 !((fan_control_commands & TPACPI_FAN_CMD_SPEED) &&
18ad7996
HMH		 8421 fan_write_cmd_speed(cmd, &rc))
8422 )
8423 rc = -EINVAL;
16663a87
HMH		 8424 else if (!rc)
8425 fan_watchdog_reset();
18ad7996
HMH		 8426 }
8427
8428 return rc;
8429}
8430
a5763f22
HMH		 8431static struct ibm_struct fan_driver_data = {
8432 .name = "fan",
8433 .read = fan_read,
8434 .write = fan_write,
8435 .exit = fan_exit,
75700e53
HMH		 8436 .suspend = fan_suspend,
8437 .resume = fan_resume,
a5763f22
HMH		 8438};
8439
56b6aeb0
HMH		 8440/****************************************************************************
8441 ****************************************************************************
8442 *
8443 * Infrastructure
8444 *
8445 ****************************************************************************
8446 ****************************************************************************/
8447
8b468c0c
HMH		 8448/*
8449 * HKEY event callout for other subdrivers go here
8450 * (yes, it is ugly, but it is quick, safe, and gets the job done
8451 */
8452static void tpacpi_driver_event(const unsigned int hkey_event)
8453{
347a2686
HMH		 8454 if (ibm_backlight_device) {
8455 switch (hkey_event) {
8456 case TP_HKEY_EV_BRGHT_UP:
8457 case TP_HKEY_EV_BRGHT_DOWN:
8458 tpacpi_brightness_notify_change();
8459 }
8460 }
0d204c34
HMH		 8461 if (alsa_card) {
8462 switch (hkey_event) {
8463 case TP_HKEY_EV_VOL_UP:
8464 case TP_HKEY_EV_VOL_DOWN:
8465 case TP_HKEY_EV_VOL_MUTE:
8466 volume_alsa_notify_change();
8467 }
8468 }
8b468c0c
HMH		 8469}
8470
8b468c0c
HMH		 8471static void hotkey_driver_event(const unsigned int scancode)
8472{
67bcae6e 8473 tpacpi_driver_event(TP_HKEY_EV_HOTKEY_BASE + scancode);
8b468c0c
HMH		 8474}
8475
7fd40029
HMH		 8476/* sysfs name ---------------------------------------------------------- */
8477static ssize_t thinkpad_acpi_pdev_name_show(struct device *dev,
8478 struct device_attribute *attr,
8479 char *buf)
8480{
e0c7dfe7 8481 return snprintf(buf, PAGE_SIZE, "%s\n", TPACPI_NAME);
7fd40029
HMH		 8482}
8483
8484static struct device_attribute dev_attr_thinkpad_acpi_pdev_name =
8485 __ATTR(name, S_IRUGO, thinkpad_acpi_pdev_name_show, NULL);
8486
8487/* --------------------------------------------------------------------- */
8488
56b6aeb0 8489/* /proc support */
94954cc6 8490static struct proc_dir_entry *proc_dir;
16663a87 8491
56b6aeb0
HMH		 8492/*
8493 * Module and infrastructure proble, init and exit handling
8494 */
1da177e4 8495
b21a15f6
HMH		 8496static int force_load;
8497
fe08bc4b 8498#ifdef CONFIG_THINKPAD_ACPI_DEBUG
a5763f22 8499static const char * __init str_supported(int is_supported)
fe08bc4b 8500{
a5763f22 8501 static char text_unsupported[] __initdata = "not supported";
fe08bc4b 8502
a5763f22 8503 return (is_supported)? &text_unsupported[4] : &text_unsupported[0];
fe08bc4b
HMH		 8504}
8505#endif /* CONFIG_THINKPAD_ACPI_DEBUG */
8506
b21a15f6
HMH		 8507static void ibm_exit(struct ibm_struct *ibm)
8508{
8509 dbg_printk(TPACPI_DBG_EXIT, "removing %s\n", ibm->name);
8510
8511 list_del_init(&ibm->all_drivers);
8512
8513 if (ibm->flags.acpi_notify_installed) {
8514 dbg_printk(TPACPI_DBG_EXIT,
8515 "%s: acpi_remove_notify_handler\n", ibm->name);
8516 BUG_ON(!ibm->acpi);
8517 acpi_remove_notify_handler(*ibm->acpi->handle,
8518 ibm->acpi->type,
8519 dispatch_acpi_notify);
8520 ibm->flags.acpi_notify_installed = 0;
8521 ibm->flags.acpi_notify_installed = 0;
8522 }
8523
8524 if (ibm->flags.proc_created) {
8525 dbg_printk(TPACPI_DBG_EXIT,
8526 "%s: remove_proc_entry\n", ibm->name);
8527 remove_proc_entry(ibm->name, proc_dir);
8528 ibm->flags.proc_created = 0;
8529 }
8530
8531 if (ibm->flags.acpi_driver_registered) {
8532 dbg_printk(TPACPI_DBG_EXIT,
8533 "%s: acpi_bus_unregister_driver\n", ibm->name);
8534 BUG_ON(!ibm->acpi);
8535 acpi_bus_unregister_driver(ibm->acpi->driver);
8536 kfree(ibm->acpi->driver);
8537 ibm->acpi->driver = NULL;
8538 ibm->flags.acpi_driver_registered = 0;
8539 }
8540
8541 if (ibm->flags.init_called && ibm->exit) {
8542 ibm->exit();
8543 ibm->flags.init_called = 0;
8544 }
8545
8546 dbg_printk(TPACPI_DBG_INIT, "finished removing %s\n", ibm->name);
8547}
f74a27d4 8548
a5763f22 8549static int __init ibm_init(struct ibm_init_struct *iibm)
1da177e4
LT		 8550{
8551 int ret;
a5763f22 8552 struct ibm_struct *ibm = iibm->data;
1da177e4
LT		 8553 struct proc_dir_entry *entry;
8554
a5763f22
HMH		 8555 BUG_ON(ibm == NULL);
8556
8557 INIT_LIST_HEAD(&ibm->all_drivers);
8558
92641177 8559 if (ibm->flags.experimental && !experimental)
1da177e4
LT		 8560 return 0;
8561
fe08bc4b
HMH		 8562 dbg_printk(TPACPI_DBG_INIT,
8563 "probing for %s\n", ibm->name);
8564
a5763f22
HMH		 8565 if (iibm->init) {
8566 ret = iibm->init(iibm);
5fba344c
HMH		 8567 if (ret > 0)
8568 return 0; /* probe failed */
8569 if (ret)
1da177e4 8570 return ret;
a5763f22 8571
92641177 8572 ibm->flags.init_called = 1;
1da177e4
LT		 8573 }
8574
8d376cd6
HMH		 8575 if (ibm->acpi) {
8576 if (ibm->acpi->hid) {
8577 ret = register_tpacpi_subdriver(ibm);
8578 if (ret)
8579 goto err_out;
8580 }
5fba344c 8581
8d376cd6
HMH		 8582 if (ibm->acpi->notify) {
8583 ret = setup_acpi_notify(ibm);
8584 if (ret == -ENODEV) {
e0c7dfe7 8585 printk(TPACPI_NOTICE "disabling subdriver %s\n",
8d376cd6
HMH		 8586 ibm->name);
8587 ret = 0;
8588 goto err_out;
8589 }
8590 if (ret < 0)
8591 goto err_out;
5fba344c 8592 }
5fba344c
HMH		 8593 }
8594
fe08bc4b
HMH		 8595 dbg_printk(TPACPI_DBG_INIT,
8596 "%s installed\n", ibm->name);
8597
78f81cc4 8598 if (ibm->read) {
b525c06c 8599 mode_t mode = iibm->base_procfs_mode;
887965e6 8600
b525c06c
HMH		 8601 if (!mode)
8602 mode = S_IRUGO;
887965e6
AD		 8603 if (ibm->write)
8604 mode |= S_IWUSR;
8605 entry = proc_create_data(ibm->name, mode, proc_dir,
8606 &dispatch_proc_fops, ibm);
78f81cc4 8607 if (!entry) {
e0c7dfe7 8608 printk(TPACPI_ERR "unable to create proc entry %s\n",
78f81cc4 8609 ibm->name);
5fba344c
HMH		 8610 ret = -ENODEV;
8611 goto err_out;
78f81cc4 8612 }
92641177 8613 ibm->flags.proc_created = 1;
78f81cc4 8614 }
1da177e4 8615
a5763f22
HMH		 8616 list_add_tail(&ibm->all_drivers, &tpacpi_all_drivers);
8617
1da177e4 8618 return 0;
5fba344c
HMH		 8619
8620err_out:
fe08bc4b
HMH		 8621 dbg_printk(TPACPI_DBG_INIT,
8622 "%s: at error exit path with result %d\n",
8623 ibm->name, ret);
8624
5fba344c
HMH		 8625 ibm_exit(ibm);
8626 return (ret < 0)? ret : 0;
1da177e4
LT		 8627}
8628
56b6aeb0
HMH		 8629/* Probing */
8630
050df107
HMH		 8631static bool __pure __init tpacpi_is_fw_digit(const char c)
8632{
8633 return (c >= '0' && c <= '9') || (c >= 'A' && c <= 'Z');
8634}
8635
8636/* Most models: xxyTkkWW (#.##c); Ancient 570/600 and -SL lacks (#.##c) */
8637static bool __pure __init tpacpi_is_valid_fw_id(const char* const s,
8638 const char t)
8639{
8640 return s && strlen(s) >= 8 &&
8641 tpacpi_is_fw_digit(s[0]) &&
8642 tpacpi_is_fw_digit(s[1]) &&
8643 s[2] == t && s[3] == 'T' &&
8644 tpacpi_is_fw_digit(s[4]) &&
8645 tpacpi_is_fw_digit(s[5]) &&
8646 s[6] == 'W' && s[7] == 'W';
8647}
8648
bf20e740
HMH		 8649/* returns 0 - probe ok, or < 0 - probe error.
8650 * Probe ok doesn't mean thinkpad found.
8651 * On error, kfree() cleanup on tp->* is not performed, caller must do it */
8652static int __must_check __init get_thinkpad_model_data(
8653 struct thinkpad_id_data *tp)
1da177e4 8654{
1855256c 8655 const struct dmi_device *dev = NULL;
56b6aeb0 8656 char ec_fw_string[18];
bf20e740 8657 char const *s;
1da177e4 8658
d5a2f2f1 8659 if (!tp)
bf20e740 8660 return -EINVAL;
d5a2f2f1
HMH		 8661
8662 memset(tp, 0, sizeof(*tp));
8663
8664 if (dmi_name_in_vendors("IBM"))
8665 tp->vendor = PCI_VENDOR_ID_IBM;
8666 else if (dmi_name_in_vendors("LENOVO"))
8667 tp->vendor = PCI_VENDOR_ID_LENOVO;
8668 else
bf20e740 8669 return 0;
d5a2f2f1 8670
bf20e740
HMH		 8671 s = dmi_get_system_info(DMI_BIOS_VERSION);
8672 tp->bios_version_str = kstrdup(s, GFP_KERNEL);
8673 if (s && !tp->bios_version_str)
8674 return -ENOMEM;
050df107
HMH		 8675
8676 /* Really ancient ThinkPad 240X will fail this, which is fine */
8677 if (!tpacpi_is_valid_fw_id(tp->bios_version_str, 'E'))
bf20e740 8678 return 0;
050df107 8679
d5a2f2f1
HMH		 8680 tp->bios_model = tp->bios_version_str[0]
8681 | (tp->bios_version_str[1] << 8);
050df107
HMH		 8682 tp->bios_release = (tp->bios_version_str[4] << 8)
8683 | tp->bios_version_str[5];
d5a2f2f1 8684
56b6aeb0
HMH		 8685 /*
8686 * ThinkPad T23 or newer, A31 or newer, R50e or newer,
8687 * X32 or newer, all Z series; Some models must have an
8688 * up-to-date BIOS or they will not be detected.
8689 *
8690 * See http://thinkwiki.org/wiki/List_of_DMI_IDs
8691 */
8692 while ((dev = dmi_find_device(DMI_DEV_TYPE_OEM_STRING, NULL, dev))) {
8693 if (sscanf(dev->name,
8694 "IBM ThinkPad Embedded Controller -[%17c",
8695 ec_fw_string) == 1) {
8696 ec_fw_string[sizeof(ec_fw_string) - 1] = 0;
8697 ec_fw_string[strcspn(ec_fw_string, " ]")] = 0;
d5a2f2f1
HMH		 8698
8699 tp->ec_version_str = kstrdup(ec_fw_string, GFP_KERNEL);
bf20e740
HMH		 8700 if (!tp->ec_version_str)
8701 return -ENOMEM;
050df107
HMH		 8702
8703 if (tpacpi_is_valid_fw_id(ec_fw_string, 'H')) {
8704 tp->ec_model = ec_fw_string[0]
8705 | (ec_fw_string[1] << 8);
8706 tp->ec_release = (ec_fw_string[4] << 8)
8707 | ec_fw_string[5];
8708 } else {
8709 printk(TPACPI_NOTICE
8710 "ThinkPad firmware release %s "
8711 "doesn't match the known patterns\n",
8712 ec_fw_string);
8713 printk(TPACPI_NOTICE
8714 "please report this to %s\n",
8715 TPACPI_MAIL);
8716 }
d5a2f2f1 8717 break;
78f81cc4 8718 }
1da177e4 8719 }
d5a2f2f1 8720
bf20e740
HMH		 8721 s = dmi_get_system_info(DMI_PRODUCT_VERSION);
8722 if (s && !strnicmp(s, "ThinkPad", 8)) {
8723 tp->model_str = kstrdup(s, GFP_KERNEL);
8724 if (!tp->model_str)
8725 return -ENOMEM;
d5a2f2f1 8726 }
8c74adbc 8727
bf20e740
HMH		 8728 s = dmi_get_system_info(DMI_PRODUCT_NAME);
8729 tp->nummodel_str = kstrdup(s, GFP_KERNEL);
8730 if (s && !tp->nummodel_str)
8731 return -ENOMEM;
8732
8733 return 0;
1da177e4
LT		 8734}
8735
5fba344c
HMH		 8736static int __init probe_for_thinkpad(void)
8737{
8738 int is_thinkpad;
8739
8740 if (acpi_disabled)
8741 return -ENODEV;
8742
e28393c0
HMH		 8743 /* It would be dangerous to run the driver in this case */
8744 if (!tpacpi_is_ibm() && !tpacpi_is_lenovo())
8745 return -ENODEV;
8746
5fba344c
HMH		 8747 /*
8748 * Non-ancient models have better DMI tagging, but very old models
e675abaf 8749 * don't. tpacpi_is_fw_known() is a cheat to help in that case.
5fba344c 8750 */
e675abaf
HMH		 8751 is_thinkpad = (thinkpad_id.model_str != NULL) ||
8752 (thinkpad_id.ec_model != 0) ||
8753 tpacpi_is_fw_known();
5fba344c
HMH		 8754
8755 /* ec is required because many other handles are relative to it */
e0c7dfe7 8756 TPACPI_ACPIHANDLE_INIT(ec);
5fba344c
HMH		 8757 if (!ec_handle) {
8758 if (is_thinkpad)
e0c7dfe7 8759 printk(TPACPI_ERR
5fba344c
HMH		 8760 "Not yet supported ThinkPad detected!\n");
8761 return -ENODEV;
8762 }
8763
0dcef77c
HMH		 8764 if (!is_thinkpad && !force_load)
8765 return -ENODEV;
8766
5fba344c
HMH		 8767 return 0;
8768}
8769
7a43f788
HMH		 8770static void __init thinkpad_acpi_init_banner(void)
8771{
8772 printk(TPACPI_INFO "%s v%s\n", TPACPI_DESC, TPACPI_VERSION);
8773 printk(TPACPI_INFO "%s\n", TPACPI_URL);
8774
8775 printk(TPACPI_INFO "ThinkPad BIOS %s, EC %s\n",
8776 (thinkpad_id.bios_version_str) ?
8777 thinkpad_id.bios_version_str : "unknown",
8778 (thinkpad_id.ec_version_str) ?
8779 thinkpad_id.ec_version_str : "unknown");
8780
8781 BUG_ON(!thinkpad_id.vendor);
8782
8783 if (thinkpad_id.model_str)
8784 printk(TPACPI_INFO "%s %s, model %s\n",
8785 (thinkpad_id.vendor == PCI_VENDOR_ID_IBM) ?
8786 "IBM" : ((thinkpad_id.vendor ==
8787 PCI_VENDOR_ID_LENOVO) ?
8788 "Lenovo" : "Unknown vendor"),
8789 thinkpad_id.model_str,
8790 (thinkpad_id.nummodel_str) ?
8791 thinkpad_id.nummodel_str : "unknown");
8792}
5fba344c 8793
56b6aeb0 8794/* Module init, exit, parameters */
1da177e4 8795
a5763f22
HMH		 8796static struct ibm_init_struct ibms_init[] __initdata = {
8797 {
a5763f22
HMH		 8798 .data = &thinkpad_acpi_driver_data,
8799 },
8800 {
8801 .init = hotkey_init,
8802 .data = &hotkey_driver_data,
8803 },
8804 {
8805 .init = bluetooth_init,
8806 .data = &bluetooth_driver_data,
8807 },
8808 {
8809 .init = wan_init,
8810 .data = &wan_driver_data,
8811 },
0045c0aa
HMH		 8812 {
8813 .init = uwb_init,
8814 .data = &uwb_driver_data,
8815 },
d7c1d17d 8816#ifdef CONFIG_THINKPAD_ACPI_VIDEO
a5763f22
HMH		 8817 {
8818 .init = video_init,
b525c06c 8819 .base_procfs_mode = S_IRUSR,
a5763f22
HMH		 8820 .data = &video_driver_data,
8821 },
d7c1d17d 8822#endif
a5763f22
HMH		 8823 {
8824 .init = light_init,
8825 .data = &light_driver_data,
8826 },
a5763f22
HMH		 8827 {
8828 .init = cmos_init,
8829 .data = &cmos_driver_data,
8830 },
8831 {
8832 .init = led_init,
8833 .data = &led_driver_data,
8834 },
8835 {
8836 .init = beep_init,
8837 .data = &beep_driver_data,
8838 },
8839 {
8840 .init = thermal_init,
8841 .data = &thermal_driver_data,
8842 },
8843 {
8844 .data = &ecdump_driver_data,
8845 },
8846 {
8847 .init = brightness_init,
8848 .data = &brightness_driver_data,
8849 },
8850 {
329e4e18 8851 .init = volume_init,
a5763f22
HMH		 8852 .data = &volume_driver_data,
8853 },
8854 {
8855 .init = fan_init,
8856 .data = &fan_driver_data,
8857 },
8858};
8859
3945ac36 8860static int __init set_ibm_param(const char *val, struct kernel_param *kp)
1da177e4
LT		 8861{
8862 unsigned int i;
a5763f22 8863 struct ibm_struct *ibm;
1da177e4 8864
59f91ff1
HMH		 8865 if (!kp || !kp->name || !val)
8866 return -EINVAL;
8867
a5763f22
HMH		 8868 for (i = 0; i < ARRAY_SIZE(ibms_init); i++) {
8869 ibm = ibms_init[i].data;
59f91ff1
HMH		 8870 WARN_ON(ibm == NULL);
8871
8872 if (!ibm || !ibm->name)
8873 continue;
a5763f22
HMH		 8874
8875 if (strcmp(ibm->name, kp->name) == 0 && ibm->write) {
8876 if (strlen(val) > sizeof(ibms_init[i].param) - 2)
78f81cc4 8877 return -ENOSPC;
a5763f22
HMH		 8878 strcpy(ibms_init[i].param, val);
8879 strcat(ibms_init[i].param, ",");
78f81cc4
BD		 8880 return 0;
8881 }
a5763f22 8882 }
1da177e4 8883
1da177e4
LT		 8884 return -EINVAL;
8885}
8886
b09c7225 8887module_param(experimental, int, 0444);
f68080f8 8888MODULE_PARM_DESC(experimental,
35ff8b9f 8889 "Enables experimental features when non-zero");
56b6aeb0 8890
132ce091 8891module_param_named(debug, dbg_level, uint, 0);
f68080f8 8892MODULE_PARM_DESC(debug, "Sets debug level bit-mask");
132ce091 8893
b09c7225 8894module_param(force_load, bool, 0444);
f68080f8 8895MODULE_PARM_DESC(force_load,
35ff8b9f
HMH		 8896 "Attempts to load the driver even on a "
8897 "mis-identified ThinkPad when true");
0dcef77c 8898
b09c7225 8899module_param_named(fan_control, fan_control_allowed, bool, 0444);
f68080f8 8900MODULE_PARM_DESC(fan_control,
35ff8b9f 8901 "Enables setting fan parameters features when true");
ecf2a80a 8902
b09c7225 8903module_param_named(brightness_mode, brightness_mode, uint, 0444);
f68080f8 8904MODULE_PARM_DESC(brightness_mode,
35ff8b9f 8905 "Selects brightness control strategy: "
0e501834 8906 "0=auto, 1=EC, 2=UCMS, 3=EC+NVRAM");
24d3b774 8907
b09c7225 8908module_param(brightness_enable, uint, 0444);
f68080f8 8909MODULE_PARM_DESC(brightness_enable,
35ff8b9f 8910 "Enables backlight control when 1, disables when 0");
87cc537a 8911
b09c7225 8912module_param(hotkey_report_mode, uint, 0444);
f68080f8 8913MODULE_PARM_DESC(hotkey_report_mode,
35ff8b9f
HMH		 8914 "used for backwards compatibility with userspace, "
8915 "see documentation");
ff80f137 8916
ff850c33 8917#ifdef CONFIG_THINKPAD_ACPI_ALSA_SUPPORT
329e4e18
HMH		 8918module_param_named(volume_mode, volume_mode, uint, 0444);
8919MODULE_PARM_DESC(volume_mode,
8920 "Selects volume control strategy: "
8921 "0=auto, 1=EC, 2=N/A, 3=EC+NVRAM");
8922
a112ceee
HMH		 8923module_param_named(volume_capabilities, volume_capabilities, uint, 0444);
8924MODULE_PARM_DESC(volume_capabilities,
8925 "Selects the mixer capabilites: "
8926 "0=auto, 1=volume and mute, 2=mute only");
8927
c7ac6291
HMH		 8928module_param_named(volume_control, volume_control_allowed, bool, 0444);
8929MODULE_PARM_DESC(volume_control,
8930 "Enables software override for the console audio "
8931 "control when true");
8932
0d204c34
HMH		 8933/* ALSA module API parameters */
8934module_param_named(index, alsa_index, int, 0444);
8935MODULE_PARM_DESC(index, "ALSA index for the ACPI EC Mixer");
8936module_param_named(id, alsa_id, charp, 0444);
8937MODULE_PARM_DESC(id, "ALSA id for the ACPI EC Mixer");
8938module_param_named(enable, alsa_enable, bool, 0444);
8939MODULE_PARM_DESC(enable, "Enable the ALSA interface for the ACPI EC Mixer");
ff850c33 8940#endif /* CONFIG_THINKPAD_ACPI_ALSA_SUPPORT */
0d204c34 8941
e0c7dfe7 8942#define TPACPI_PARAM(feature) \
f68080f8 8943 module_param_call(feature, set_ibm_param, NULL, NULL, 0); \
cbb14842 8944 MODULE_PARM_DESC(feature, "Simulates thinkpad-acpi procfs command " \
35ff8b9f 8945 "at module load, see documentation")
1da177e4 8946
e0c7dfe7
HMH		 8947TPACPI_PARAM(hotkey);
8948TPACPI_PARAM(bluetooth);
8949TPACPI_PARAM(video);
8950TPACPI_PARAM(light);
e0c7dfe7
HMH		 8951TPACPI_PARAM(cmos);
8952TPACPI_PARAM(led);
8953TPACPI_PARAM(beep);
8954TPACPI_PARAM(ecdump);
8955TPACPI_PARAM(brightness);
8956TPACPI_PARAM(volume);
8957TPACPI_PARAM(fan);
78f81cc4 8958
a73f3091 8959#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
b09c7225 8960module_param(dbg_wlswemul, uint, 0444);
a73f3091
HMH		 8961MODULE_PARM_DESC(dbg_wlswemul, "Enables WLSW emulation");
8962module_param_named(wlsw_state, tpacpi_wlsw_emulstate, bool, 0);
8963MODULE_PARM_DESC(wlsw_state,
8964 "Initial state of the emulated WLSW switch");
8965
b09c7225 8966module_param(dbg_bluetoothemul, uint, 0444);
a73f3091
HMH		 8967MODULE_PARM_DESC(dbg_bluetoothemul, "Enables bluetooth switch emulation");
8968module_param_named(bluetooth_state, tpacpi_bluetooth_emulstate, bool, 0);
8969MODULE_PARM_DESC(bluetooth_state,
8970 "Initial state of the emulated bluetooth switch");
8971
b09c7225 8972module_param(dbg_wwanemul, uint, 0444);
a73f3091
HMH		 8973MODULE_PARM_DESC(dbg_wwanemul, "Enables WWAN switch emulation");
8974module_param_named(wwan_state, tpacpi_wwan_emulstate, bool, 0);
8975MODULE_PARM_DESC(wwan_state,
8976 "Initial state of the emulated WWAN switch");
0045c0aa 8977
b09c7225 8978module_param(dbg_uwbemul, uint, 0444);
0045c0aa
HMH		 8979MODULE_PARM_DESC(dbg_uwbemul, "Enables UWB switch emulation");
8980module_param_named(uwb_state, tpacpi_uwb_emulstate, bool, 0);
8981MODULE_PARM_DESC(uwb_state,
8982 "Initial state of the emulated UWB switch");
a73f3091
HMH		 8983#endif
8984
b21a15f6
HMH		 8985static void thinkpad_acpi_module_exit(void)
8986{
8987 struct ibm_struct *ibm, *itmp;
8988
8989 tpacpi_lifecycle = TPACPI_LIFE_EXITING;
8990
8991 list_for_each_entry_safe_reverse(ibm, itmp,
8992 &tpacpi_all_drivers,
8993 all_drivers) {
8994 ibm_exit(ibm);
8995 }
8996
8997 dbg_printk(TPACPI_DBG_INIT, "finished subdriver exit path...\n");
8998
8999 if (tpacpi_inputdev) {
9000 if (tp_features.input_device_registered)
9001 input_unregister_device(tpacpi_inputdev);
9002 else
9003 input_free_device(tpacpi_inputdev);
9004 }
9005
9006 if (tpacpi_hwmon)
9007 hwmon_device_unregister(tpacpi_hwmon);
9008
9009 if (tp_features.sensors_pdev_attrs_registered)
9010 device_remove_file(&tpacpi_sensors_pdev->dev,
9011 &dev_attr_thinkpad_acpi_pdev_name);
9012 if (tpacpi_sensors_pdev)
9013 platform_device_unregister(tpacpi_sensors_pdev);
9014 if (tpacpi_pdev)
9015 platform_device_unregister(tpacpi_pdev);
9016
9017 if (tp_features.sensors_pdrv_attrs_registered)
9018 tpacpi_remove_driver_attributes(&tpacpi_hwmon_pdriver.driver);
9019 if (tp_features.platform_drv_attrs_registered)
9020 tpacpi_remove_driver_attributes(&tpacpi_pdriver.driver);
9021
9022 if (tp_features.sensors_pdrv_registered)
9023 platform_driver_unregister(&tpacpi_hwmon_pdriver);
9024
9025 if (tp_features.platform_drv_registered)
9026 platform_driver_unregister(&tpacpi_pdriver);
9027
9028 if (proc_dir)
e0c7dfe7 9029 remove_proc_entry(TPACPI_PROC_DIR, acpi_root_dir);
b21a15f6 9030
e0e3c061
HMH		 9031 if (tpacpi_wq)
9032 destroy_workqueue(tpacpi_wq);
9033
b21a15f6
HMH		 9034 kfree(thinkpad_id.bios_version_str);
9035 kfree(thinkpad_id.ec_version_str);
9036 kfree(thinkpad_id.model_str);
9037}
9038
f74a27d4 9039
1def7115 9040static int __init thinkpad_acpi_module_init(void)
1da177e4
LT		 9041{
9042 int ret, i;
9043
8fef502e
HMH		 9044 tpacpi_lifecycle = TPACPI_LIFE_INIT;
9045
ff80f137
HMH		 9046 /* Parameter checking */
9047 if (hotkey_report_mode > 2)
9048 return -EINVAL;
9049
54ae1501 9050 /* Driver-level probe */
d5a2f2f1 9051
bf20e740
HMH		 9052 ret = get_thinkpad_model_data(&thinkpad_id);
9053 if (ret) {
9054 printk(TPACPI_ERR
9055 "unable to get DMI data: %d\n", ret);
9056 thinkpad_acpi_module_exit();
9057 return ret;
9058 }
5fba344c 9059 ret = probe_for_thinkpad();
d5a2f2f1
HMH		 9060 if (ret) {
9061 thinkpad_acpi_module_exit();
5fba344c 9062 return ret;
d5a2f2f1 9063 }
1da177e4 9064
54ae1501 9065 /* Driver initialization */
d5a2f2f1 9066
7a43f788
HMH		 9067 thinkpad_acpi_init_banner();
9068 tpacpi_check_outdated_fw();
9069
e0c7dfe7
HMH		 9070 TPACPI_ACPIHANDLE_INIT(ecrd);
9071 TPACPI_ACPIHANDLE_INIT(ecwr);
1da177e4 9072
e0e3c061
HMH		 9073 tpacpi_wq = create_singlethread_workqueue(TPACPI_WORKQUEUE_NAME);
9074 if (!tpacpi_wq) {
9075 thinkpad_acpi_module_exit();
9076 return -ENOMEM;
9077 }
9078
e0c7dfe7 9079 proc_dir = proc_mkdir(TPACPI_PROC_DIR, acpi_root_dir);
1da177e4 9080 if (!proc_dir) {
35ff8b9f
HMH		 9081 printk(TPACPI_ERR
9082 "unable to create proc dir " TPACPI_PROC_DIR);
1def7115 9083 thinkpad_acpi_module_exit();
1da177e4
LT		 9084 return -ENODEV;
9085 }
78f81cc4 9086
54ae1501
HMH		 9087 ret = platform_driver_register(&tpacpi_pdriver);
9088 if (ret) {
35ff8b9f
HMH		 9089 printk(TPACPI_ERR
9090 "unable to register main platform driver\n");
54ae1501
HMH		 9091 thinkpad_acpi_module_exit();
9092 return ret;
9093 }
ac36393d
HMH		 9094 tp_features.platform_drv_registered = 1;
9095
7fd40029
HMH		 9096 ret = platform_driver_register(&tpacpi_hwmon_pdriver);
9097 if (ret) {
35ff8b9f
HMH		 9098 printk(TPACPI_ERR
9099 "unable to register hwmon platform driver\n");
7fd40029
HMH		 9100 thinkpad_acpi_module_exit();
9101 return ret;
9102 }
9103 tp_features.sensors_pdrv_registered = 1;
9104
176750d6 9105 ret = tpacpi_create_driver_attributes(&tpacpi_pdriver.driver);
2369cc94
HMH		 9106 if (!ret) {
9107 tp_features.platform_drv_attrs_registered = 1;
35ff8b9f
HMH		 9108 ret = tpacpi_create_driver_attributes(
9109 &tpacpi_hwmon_pdriver.driver);
2369cc94 9110 }
176750d6 9111 if (ret) {
35ff8b9f
HMH		 9112 printk(TPACPI_ERR
9113 "unable to create sysfs driver attributes\n");
176750d6
HMH		 9114 thinkpad_acpi_module_exit();
9115 return ret;
9116 }
2369cc94 9117 tp_features.sensors_pdrv_attrs_registered = 1;
176750d6 9118
54ae1501
HMH		 9119
9120 /* Device initialization */
e0c7dfe7 9121 tpacpi_pdev = platform_device_register_simple(TPACPI_DRVR_NAME, -1,
54ae1501
HMH		 9122 NULL, 0);
9123 if (IS_ERR(tpacpi_pdev)) {
9124 ret = PTR_ERR(tpacpi_pdev);
9125 tpacpi_pdev = NULL;
e0c7dfe7 9126 printk(TPACPI_ERR "unable to register platform device\n");
54ae1501
HMH		 9127 thinkpad_acpi_module_exit();
9128 return ret;
9129 }
7fd40029 9130 tpacpi_sensors_pdev = platform_device_register_simple(
35ff8b9f
HMH		 9131 TPACPI_HWMON_DRVR_NAME,
9132 -1, NULL, 0);
7fd40029
HMH		 9133 if (IS_ERR(tpacpi_sensors_pdev)) {
9134 ret = PTR_ERR(tpacpi_sensors_pdev);
9135 tpacpi_sensors_pdev = NULL;
35ff8b9f
HMH		 9136 printk(TPACPI_ERR
9137 "unable to register hwmon platform device\n");
7fd40029
HMH		 9138 thinkpad_acpi_module_exit();
9139 return ret;
9140 }
9141 ret = device_create_file(&tpacpi_sensors_pdev->dev,
9142 &dev_attr_thinkpad_acpi_pdev_name);
9143 if (ret) {
e0c7dfe7 9144 printk(TPACPI_ERR
35ff8b9f 9145 "unable to create sysfs hwmon device attributes\n");
7fd40029
HMH		 9146 thinkpad_acpi_module_exit();
9147 return ret;
9148 }
9149 tp_features.sensors_pdev_attrs_registered = 1;
9150 tpacpi_hwmon = hwmon_device_register(&tpacpi_sensors_pdev->dev);
54ae1501
HMH		 9151 if (IS_ERR(tpacpi_hwmon)) {
9152 ret = PTR_ERR(tpacpi_hwmon);
9153 tpacpi_hwmon = NULL;
e0c7dfe7 9154 printk(TPACPI_ERR "unable to register hwmon device\n");
54ae1501
HMH		 9155 thinkpad_acpi_module_exit();
9156 return ret;
9157 }
8523ed6f 9158 mutex_init(&tpacpi_inputdev_send_mutex);
7f5d1cd6
HMH		 9159 tpacpi_inputdev = input_allocate_device();
9160 if (!tpacpi_inputdev) {
e0c7dfe7 9161 printk(TPACPI_ERR "unable to allocate input device\n");
7f5d1cd6
HMH		 9162 thinkpad_acpi_module_exit();
9163 return -ENOMEM;
9164 } else {
9165 /* Prepare input device, but don't register */
9166 tpacpi_inputdev->name = "ThinkPad Extra Buttons";
e0c7dfe7 9167 tpacpi_inputdev->phys = TPACPI_DRVR_NAME "/input0";
7f5d1cd6 9168 tpacpi_inputdev->id.bustype = BUS_HOST;
e28393c0 9169 tpacpi_inputdev->id.vendor = thinkpad_id.vendor;
7f5d1cd6
HMH		 9170 tpacpi_inputdev->id.product = TPACPI_HKEY_INPUT_PRODUCT;
9171 tpacpi_inputdev->id.version = TPACPI_HKEY_INPUT_VERSION;
d112ef95 9172 tpacpi_inputdev->dev.parent = &tpacpi_pdev->dev;
7f5d1cd6 9173 }
77775838
HMH		 9174
9175 /* Init subdriver dependencies */
9176 tpacpi_detect_brightness_capabilities();
9177
9178 /* Init subdrivers */
a5763f22
HMH		 9179 for (i = 0; i < ARRAY_SIZE(ibms_init); i++) {
9180 ret = ibm_init(&ibms_init[i]);
9181 if (ret >= 0 && *ibms_init[i].param)
9182 ret = ibms_init[i].data->write(ibms_init[i].param);
1da177e4 9183 if (ret < 0) {
1def7115 9184 thinkpad_acpi_module_exit();
1da177e4
LT		 9185 return ret;
9186 }
9187 }
b589ea4c
HMH		 9188
9189 tpacpi_lifecycle = TPACPI_LIFE_RUNNING;
9190
7f5d1cd6
HMH		 9191 ret = input_register_device(tpacpi_inputdev);
9192 if (ret < 0) {
e0c7dfe7 9193 printk(TPACPI_ERR "unable to register input device\n");
7f5d1cd6
HMH		 9194 thinkpad_acpi_module_exit();
9195 return ret;
9196 } else {
9197 tp_features.input_device_registered = 1;
9198 }
1da177e4
LT		 9199
9200 return 0;
9201}
9202
95e57ab2
HMH		 9203MODULE_ALIAS(TPACPI_DRVR_SHORTNAME);
9204
922fe097
HMH		 9205/*
9206 * This will autoload the driver in almost every ThinkPad
9207 * in widespread use.
9208 *
9209 * Only _VERY_ old models, like the 240, 240x and 570 lack
9210 * the HKEY event interface.
9211 */
9212MODULE_DEVICE_TABLE(acpi, ibm_htk_device_ids);
9213
f68080f8
HMH		 9214/*
9215 * DMI matching for module autoloading
9216 *
9217 * See http://thinkwiki.org/wiki/List_of_DMI_IDs
9218 * See http://thinkwiki.org/wiki/BIOS_Upgrade_Downloads
9219 *
9220 * Only models listed in thinkwiki will be supported, so add yours
9221 * if it is not there yet.
9222 */
9223#define IBM_BIOS_MODULE_ALIAS(__type) \
b36a50f9 9224 MODULE_ALIAS("dmi:bvnIBM:bvr" __type "ET??WW*")
f68080f8 9225
f68080f8
HMH		 9226/* Ancient thinkpad BIOSes have to be identified by
9227 * BIOS type or model number, and there are far less
9228 * BIOS types than model numbers... */
922fe097 9229IBM_BIOS_MODULE_ALIAS("I[MU]"); /* 570, 570e */
f68080f8 9230
f68f53a2
HMH		 9231MODULE_AUTHOR("Borislav Deianov <borislav@users.sf.net>");
9232MODULE_AUTHOR("Henrique de Moraes Holschuh <hmh@hmh.eng.br>");
e0c7dfe7
HMH		 9233MODULE_DESCRIPTION(TPACPI_DESC);
9234MODULE_VERSION(TPACPI_VERSION);
f68080f8
HMH		 9235MODULE_LICENSE("GPL");
9236
1def7115
HMH		 9237module_init(thinkpad_acpi_module_init);
9238module_exit(thinkpad_acpi_module_exit);
Linux kernel - Deliverables
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