]> git.proxmox.com Git - mirror_ubuntu-bionic-kernel.git/blame - drivers/platform/x86/thinkpad_acpi.c
projects / mirror_ubuntu-bionic-kernel.git / blame
? search:
summary | shortlog | log | commit | commitdiff | tree
blob | blame (incremental) | history | HEAD
thinkpad-acpi: restrict procfs count value to sane upper limit
[mirror_ubuntu-bionic-kernel.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
b57f7e7b 24#define TPACPI_VERSION "0.23"
f21179a4 25#define TPACPI_SYSFS_VERSION 0x020400
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>
61
62#include <linux/nvram.h>
63#include <linux/proc_fs.h>
64#include <linux/sysfs.h>
65#include <linux/backlight.h>
66#include <linux/fb.h>
67#include <linux/platform_device.h>
68#include <linux/hwmon.h>
69#include <linux/hwmon-sysfs.h>
70#include <linux/input.h>
4fa6811b 71#include <linux/leds.h>
0e74dc26 72#include <linux/rfkill.h>
0c78039f
HMH		 73#include <asm/uaccess.h>
74
75#include <linux/dmi.h>
76#include <linux/jiffies.h>
77#include <linux/workqueue.h>
78
79#include <acpi/acpi_drivers.h>
0c78039f
HMH		 80
81#include <linux/pci_ids.h>
82
0c78039f
HMH		 83
84/* ThinkPad CMOS commands */
85#define TP_CMOS_VOLUME_DOWN 0
86#define TP_CMOS_VOLUME_UP 1
87#define TP_CMOS_VOLUME_MUTE 2
88#define TP_CMOS_BRIGHTNESS_UP 4
89#define TP_CMOS_BRIGHTNESS_DOWN 5
4fa6811b
HMH		 90#define TP_CMOS_THINKLIGHT_ON 12
91#define TP_CMOS_THINKLIGHT_OFF 13
0c78039f
HMH		 92
93/* NVRAM Addresses */
94enum tp_nvram_addr {
95 TP_NVRAM_ADDR_HK2 = 0x57,
96 TP_NVRAM_ADDR_THINKLIGHT = 0x58,
97 TP_NVRAM_ADDR_VIDEO = 0x59,
98 TP_NVRAM_ADDR_BRIGHTNESS = 0x5e,
99 TP_NVRAM_ADDR_MIXER = 0x60,
100};
101
102/* NVRAM bit masks */
103enum {
104 TP_NVRAM_MASK_HKT_THINKPAD = 0x08,
105 TP_NVRAM_MASK_HKT_ZOOM = 0x20,
106 TP_NVRAM_MASK_HKT_DISPLAY = 0x40,
107 TP_NVRAM_MASK_HKT_HIBERNATE = 0x80,
108 TP_NVRAM_MASK_THINKLIGHT = 0x10,
109 TP_NVRAM_MASK_HKT_DISPEXPND = 0x30,
110 TP_NVRAM_MASK_HKT_BRIGHTNESS = 0x20,
111 TP_NVRAM_MASK_LEVEL_BRIGHTNESS = 0x0f,
112 TP_NVRAM_POS_LEVEL_BRIGHTNESS = 0,
113 TP_NVRAM_MASK_MUTE = 0x40,
114 TP_NVRAM_MASK_HKT_VOLUME = 0x80,
115 TP_NVRAM_MASK_LEVEL_VOLUME = 0x0f,
116 TP_NVRAM_POS_LEVEL_VOLUME = 0,
117};
118
b21a15f6 119/* ACPI HIDs */
e0c7dfe7 120#define TPACPI_ACPI_HKEY_HID "IBM0068"
b21a15f6
HMH		 121
122/* Input IDs */
123#define TPACPI_HKEY_INPUT_PRODUCT 0x5054 /* "TP" */
124#define TPACPI_HKEY_INPUT_VERSION 0x4101
125
153f8220
HMH		 126/* ACPI \WGSV commands */
127enum {
128 TP_ACPI_WGSV_GET_STATE = 0x01, /* Get state information */
129 TP_ACPI_WGSV_PWR_ON_ON_RESUME = 0x02, /* Resume WWAN powered on */
130 TP_ACPI_WGSV_PWR_OFF_ON_RESUME = 0x03, /* Resume WWAN powered off */
131 TP_ACPI_WGSV_SAVE_STATE = 0x04, /* Save state for S4/S5 */
132};
133
134/* TP_ACPI_WGSV_GET_STATE bits */
135enum {
136 TP_ACPI_WGSV_STATE_WWANEXIST = 0x0001, /* WWAN hw available */
137 TP_ACPI_WGSV_STATE_WWANPWR = 0x0002, /* WWAN radio enabled */
138 TP_ACPI_WGSV_STATE_WWANPWRRES = 0x0004, /* WWAN state at resume */
139 TP_ACPI_WGSV_STATE_WWANBIOSOFF = 0x0008, /* WWAN disabled in BIOS */
140 TP_ACPI_WGSV_STATE_BLTHEXIST = 0x0001, /* BLTH hw available */
141 TP_ACPI_WGSV_STATE_BLTHPWR = 0x0002, /* BLTH radio enabled */
142 TP_ACPI_WGSV_STATE_BLTHPWRRES = 0x0004, /* BLTH state at resume */
143 TP_ACPI_WGSV_STATE_BLTHBIOSOFF = 0x0008, /* BLTH disabled in BIOS */
144 TP_ACPI_WGSV_STATE_UWBEXIST = 0x0010, /* UWB hw available */
145 TP_ACPI_WGSV_STATE_UWBPWR = 0x0020, /* UWB radio enabled */
146};
b21a15f6
HMH		 147
148/****************************************************************************
149 * Main driver
150 */
151
e0c7dfe7
HMH		 152#define TPACPI_NAME "thinkpad"
153#define TPACPI_DESC "ThinkPad ACPI Extras"
154#define TPACPI_FILE TPACPI_NAME "_acpi"
155#define TPACPI_URL "http://ibm-acpi.sf.net/"
156#define TPACPI_MAIL "ibm-acpi-devel@lists.sourceforge.net"
b21a15f6 157
e0c7dfe7
HMH		 158#define TPACPI_PROC_DIR "ibm"
159#define TPACPI_ACPI_EVENT_PREFIX "ibm"
160#define TPACPI_DRVR_NAME TPACPI_FILE
95e57ab2 161#define TPACPI_DRVR_SHORTNAME "tpacpi"
e0c7dfe7 162#define TPACPI_HWMON_DRVR_NAME TPACPI_NAME "_hwmon"
b21a15f6 163
95e57ab2 164#define TPACPI_NVRAM_KTHREAD_NAME "ktpacpi_nvramd"
e0e3c061 165#define TPACPI_WORKQUEUE_NAME "ktpacpid"
95e57ab2 166
e0c7dfe7 167#define TPACPI_MAX_ACPI_ARGS 3
b21a15f6 168
7ff8d62f 169/* printk headers */
e0c7dfe7 170#define TPACPI_LOG TPACPI_FILE ": "
7ff8d62f
HMH		 171#define TPACPI_EMERG KERN_EMERG TPACPI_LOG
172#define TPACPI_ALERT KERN_ALERT TPACPI_LOG
173#define TPACPI_CRIT KERN_CRIT TPACPI_LOG
174#define TPACPI_ERR KERN_ERR TPACPI_LOG
175#define TPACPI_WARN KERN_WARNING TPACPI_LOG
176#define TPACPI_NOTICE KERN_NOTICE TPACPI_LOG
177#define TPACPI_INFO KERN_INFO TPACPI_LOG
178#define TPACPI_DEBUG KERN_DEBUG TPACPI_LOG
179
180/* Debugging printk groups */
0c78039f 181#define TPACPI_DBG_ALL 0xffff
73a94d86 182#define TPACPI_DBG_DISCLOSETASK 0x8000
0c78039f
HMH		 183#define TPACPI_DBG_INIT 0x0001
184#define TPACPI_DBG_EXIT 0x0002
bee4cd9b 185#define TPACPI_DBG_RFKILL 0x0004
56e2c200 186#define TPACPI_DBG_HKEY 0x0008
74a60c0f 187#define TPACPI_DBG_FAN 0x0010
0e501834 188#define TPACPI_DBG_BRGHT 0x0020
0c78039f 189
35ff8b9f
HMH		 190#define onoff(status, bit) ((status) & (1 << (bit)) ? "on" : "off")
191#define enabled(status, bit) ((status) & (1 << (bit)) ? "enabled" : "disabled")
192#define strlencmp(a, b) (strncmp((a), (b), strlen(b)))
0c78039f 193
0c78039f
HMH		 194
195/****************************************************************************
b21a15f6 196 * Driver-wide structs and misc. variables
0c78039f
HMH		 197 */
198
199struct ibm_struct;
200
201struct tp_acpi_drv_struct {
202 const struct acpi_device_id *hid;
203 struct acpi_driver *driver;
204
205 void (*notify) (struct ibm_struct *, u32);
206 acpi_handle *handle;
207 u32 type;
208 struct acpi_device *device;
209};
210
211struct ibm_struct {
212 char *name;
213
214 int (*read) (char *);
215 int (*write) (char *);
216 void (*exit) (void);
217 void (*resume) (void);
083f1760 218 void (*suspend) (pm_message_t state);
90d9d3c7 219 void (*shutdown) (void);
0c78039f
HMH		 220
221 struct list_head all_drivers;
222
223 struct tp_acpi_drv_struct *acpi;
224
225 struct {
226 u8 acpi_driver_registered:1;
227 u8 acpi_notify_installed:1;
228 u8 proc_created:1;
229 u8 init_called:1;
230 u8 experimental:1;
231 } flags;
232};
233
234struct ibm_init_struct {
235 char param[32];
236
237 int (*init) (struct ibm_init_struct *);
238 struct ibm_struct *data;
239};
240
241static struct {
0c78039f
HMH		 242 u32 bluetooth:1;
243 u32 hotkey:1;
244 u32 hotkey_mask:1;
245 u32 hotkey_wlsw:1;
6c231bd5 246 u32 hotkey_tablet:1;
0c78039f
HMH		 247 u32 light:1;
248 u32 light_status:1;
249 u32 bright_16levels:1;
b5972796 250 u32 bright_acpimode:1;
0c78039f 251 u32 wan:1;
0045c0aa 252 u32 uwb:1;
0c78039f 253 u32 fan_ctrl_status_undef:1;
d7377247 254 u32 second_fan:1;
60201732 255 u32 beep_needs_two_args:1;
0c78039f
HMH		 256 u32 input_device_registered:1;
257 u32 platform_drv_registered:1;
258 u32 platform_drv_attrs_registered:1;
259 u32 sensors_pdrv_registered:1;
260 u32 sensors_pdrv_attrs_registered:1;
261 u32 sensors_pdev_attrs_registered:1;
262 u32 hotkey_poll_active:1;
263} tp_features;
264
92889022
HMH		 265static struct {
266 u16 hotkey_mask_ff:1;
267} tp_warned;
268
0c78039f
HMH		 269struct thinkpad_id_data {
270 unsigned int vendor; /* ThinkPad vendor:
271 * PCI_VENDOR_ID_IBM/PCI_VENDOR_ID_LENOVO */
272
273 char *bios_version_str; /* Something like 1ZET51WW (1.03z) */
274 char *ec_version_str; /* Something like 1ZHT51WW-1.04a */
275
050df107 276 u16 bios_model; /* 1Y = 0x5931, 0 = unknown */
0c78039f 277 u16 ec_model;
050df107
HMH		 278 u16 bios_release; /* 1ZETK1WW = 0x314b, 0 = unknown */
279 u16 ec_release;
0c78039f 280
8c74adbc
HMH		 281 char *model_str; /* ThinkPad T43 */
282 char *nummodel_str; /* 9384A9C for a 9384-A9C model */
0c78039f 283};
0c78039f
HMH		 284static struct thinkpad_id_data thinkpad_id;
285
8fef502e
HMH		 286static enum {
287 TPACPI_LIFE_INIT = 0,
288 TPACPI_LIFE_RUNNING,
289 TPACPI_LIFE_EXITING,
290} tpacpi_lifecycle;
291
b21a15f6
HMH		 292static int experimental;
293static u32 dbg_level;
294
e0e3c061
HMH		 295static struct workqueue_struct *tpacpi_wq;
296
75bd3bf2
HMH		 297enum led_status_t {
298 TPACPI_LED_OFF = 0,
299 TPACPI_LED_ON,
300 TPACPI_LED_BLINK,
301};
302
4fa6811b
HMH		 303/* Special LED class that can defer work */
304struct tpacpi_led_classdev {
305 struct led_classdev led_classdev;
306 struct work_struct work;
75bd3bf2 307 enum led_status_t new_state;
af116101 308 unsigned int led;
4fa6811b
HMH		 309};
310
a73f3091
HMH		 311#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
312static int dbg_wlswemul;
313static int tpacpi_wlsw_emulstate;
314static int dbg_bluetoothemul;
315static int tpacpi_bluetooth_emulstate;
316static int dbg_wwanemul;
317static int tpacpi_wwan_emulstate;
0045c0aa
HMH		 318static int dbg_uwbemul;
319static int tpacpi_uwb_emulstate;
a73f3091
HMH		 320#endif
321
322
3dcc2c3b
HMH		 323/*************************************************************************
324 * Debugging helpers
325 */
326
327#define dbg_printk(a_dbg_level, format, arg...) \
328 do { if (dbg_level & (a_dbg_level)) \
329 printk(TPACPI_DEBUG "%s: " format, __func__ , ## arg); \
330 } while (0)
331
332#ifdef CONFIG_THINKPAD_ACPI_DEBUG
333#define vdbg_printk dbg_printk
334static const char *str_supported(int is_supported);
335#else
336#define vdbg_printk(a_dbg_level, format, arg...) \
337 do { } while (0)
338#endif
339
73a94d86
HMH		 340static void tpacpi_log_usertask(const char * const what)
341{
342 printk(TPACPI_DEBUG "%s: access by process with PID %d\n",
343 what, task_tgid_vnr(current));
344}
345
346#define tpacpi_disclose_usertask(what, format, arg...) \
347 do { \
348 if (unlikely( \
349 (dbg_level & TPACPI_DBG_DISCLOSETASK) && \
350 (tpacpi_lifecycle == TPACPI_LIFE_RUNNING))) { \
351 printk(TPACPI_DEBUG "%s: PID %d: " format, \
352 what, task_tgid_vnr(current), ## arg); \
353 } \
354 } while (0)
3dcc2c3b 355
7d95a3d5
HMH		 356/*
357 * Quirk handling helpers
358 *
359 * ThinkPad IDs and versions seen in the field so far
360 * are two-characters from the set [0-9A-Z], i.e. base 36.
361 *
362 * We use values well outside that range as specials.
363 */
364
365#define TPACPI_MATCH_ANY 0xffffU
366#define TPACPI_MATCH_UNKNOWN 0U
367
368/* TPID('1', 'Y') == 0x5931 */
369#define TPID(__c1, __c2) (((__c2) << 8) | (__c1))
370
371#define TPACPI_Q_IBM(__id1, __id2, __quirk) \
372 { .vendor = PCI_VENDOR_ID_IBM, \
373 .bios = TPID(__id1, __id2), \
374 .ec = TPACPI_MATCH_ANY, \
375 .quirks = (__quirk) }
376
377#define TPACPI_Q_LNV(__id1, __id2, __quirk) \
378 { .vendor = PCI_VENDOR_ID_LENOVO, \
379 .bios = TPID(__id1, __id2), \
380 .ec = TPACPI_MATCH_ANY, \
381 .quirks = (__quirk) }
382
383struct tpacpi_quirk {
384 unsigned int vendor;
385 u16 bios;
386 u16 ec;
387 unsigned long quirks;
388};
389
390/**
391 * tpacpi_check_quirks() - search BIOS/EC version on a list
392 * @qlist: array of &struct tpacpi_quirk
393 * @qlist_size: number of elements in @qlist
394 *
395 * Iterates over a quirks list until one is found that matches the
396 * ThinkPad's vendor, BIOS and EC model.
397 *
398 * Returns 0 if nothing matches, otherwise returns the quirks field of
399 * the matching &struct tpacpi_quirk entry.
400 *
401 * The match criteria is: vendor, ec and bios much match.
402 */
403static unsigned long __init tpacpi_check_quirks(
404 const struct tpacpi_quirk *qlist,
405 unsigned int qlist_size)
406{
407 while (qlist_size) {
408 if ((qlist->vendor == thinkpad_id.vendor ||
409 qlist->vendor == TPACPI_MATCH_ANY) &&
410 (qlist->bios == thinkpad_id.bios_model ||
411 qlist->bios == TPACPI_MATCH_ANY) &&
412 (qlist->ec == thinkpad_id.ec_model ||
413 qlist->ec == TPACPI_MATCH_ANY))
414 return qlist->quirks;
415
416 qlist_size--;
417 qlist++;
418 }
419 return 0;
420}
421
422
56b6aeb0
HMH		 423/****************************************************************************
424 ****************************************************************************
425 *
426 * ACPI Helpers and device model
427 *
428 ****************************************************************************
429 ****************************************************************************/
430
431/*************************************************************************
432 * ACPI basic handles
433 */
1da177e4 434
94954cc6 435static acpi_handle root_handle;
1da177e4 436
e0c7dfe7 437#define TPACPI_HANDLE(object, parent, paths...) \
1da177e4
LT		 438 static acpi_handle object##_handle; \
439 static acpi_handle *object##_parent = &parent##_handle; \
78f81cc4 440 static char *object##_path; \
1da177e4
LT		 441 static char *object##_paths[] = { paths }
442
e0c7dfe7 443TPACPI_HANDLE(ec, root, "\\_SB.PCI0.ISA.EC0", /* 240, 240x */
78f81cc4
BD		 444 "\\_SB.PCI.ISA.EC", /* 570 */
445 "\\_SB.PCI0.ISA0.EC0", /* 600e/x, 770e, 770x */
446 "\\_SB.PCI0.ISA.EC", /* A21e, A2xm/p, T20-22, X20-21 */
447 "\\_SB.PCI0.AD4S.EC0", /* i1400, R30 */
448 "\\_SB.PCI0.ICH3.EC0", /* R31 */
449 "\\_SB.PCI0.LPC.EC", /* all others */
56b6aeb0 450 );
78f81cc4 451
e0c7dfe7
HMH		 452TPACPI_HANDLE(ecrd, ec, "ECRD"); /* 570 */
453TPACPI_HANDLE(ecwr, ec, "ECWR"); /* 570 */
78f81cc4 454
35ff8b9f
HMH		 455TPACPI_HANDLE(cmos, root, "\\UCMS", /* R50, R50e, R50p, R51, */
456 /* T4x, X31, X40 */
78f81cc4
BD		 457 "\\CMOS", /* A3x, G4x, R32, T23, T30, X22-24, X30 */
458 "\\CMS", /* R40, R40e */
56b6aeb0 459 ); /* all others */
78f81cc4 460
e0c7dfe7 461TPACPI_HANDLE(hkey, ec, "\\_SB.HKEY", /* 600e/x, 770e, 770x */
78f81cc4
BD		 462 "^HKEY", /* R30, R31 */
463 "HKEY", /* all others */
56b6aeb0 464 ); /* 570 */
78f81cc4 465
d7c1d17d
HMH		 466TPACPI_HANDLE(vid, root, "\\_SB.PCI.AGP.VGA", /* 570 */
467 "\\_SB.PCI0.AGP0.VID0", /* 600e/x, 770x */
468 "\\_SB.PCI0.VID0", /* 770e */
469 "\\_SB.PCI0.VID", /* A21e, G4x, R50e, X30, X40 */
470 "\\_SB.PCI0.AGP.VID", /* all others */
471 ); /* R30, R31 */
472
78f81cc4 473
56b6aeb0
HMH		 474/*************************************************************************
475 * ACPI helpers
a8b7a662
HMH		 476 */
477
1da177e4
LT		 478static int acpi_evalf(acpi_handle handle,
479 void *res, char *method, char *fmt, ...)
480{
481 char *fmt0 = fmt;
78f81cc4 482 struct acpi_object_list params;
e0c7dfe7 483 union acpi_object in_objs[TPACPI_MAX_ACPI_ARGS];
78f81cc4
BD		 484 struct acpi_buffer result, *resultp;
485 union acpi_object out_obj;
486 acpi_status status;
487 va_list ap;
488 char res_type;
489 int success;
490 int quiet;
1da177e4
LT		 491
492 if (!*fmt) {
e0c7dfe7 493 printk(TPACPI_ERR "acpi_evalf() called with empty format\n");
1da177e4
LT		 494 return 0;
495 }
496
497 if (*fmt == 'q') {
498 quiet = 1;
499 fmt++;
500 } else
501 quiet = 0;
502
503 res_type = *(fmt++);
504
505 params.count = 0;
506 params.pointer = &in_objs[0];
507
508 va_start(ap, fmt);
509 while (*fmt) {
510 char c = *(fmt++);
511 switch (c) {
512 case 'd': /* int */
513 in_objs[params.count].integer.value = va_arg(ap, int);
514 in_objs[params.count++].type = ACPI_TYPE_INTEGER;
515 break;
78f81cc4 516 /* add more types as needed */
1da177e4 517 default:
e0c7dfe7 518 printk(TPACPI_ERR "acpi_evalf() called "
1da177e4
LT		 519 "with invalid format character '%c'\n", c);
520 return 0;
521 }
522 }
523 va_end(ap);
524
78f81cc4
BD		 525 if (res_type != 'v') {
526 result.length = sizeof(out_obj);
527 result.pointer = &out_obj;
528 resultp = &result;
529 } else
530 resultp = NULL;
1da177e4 531
78f81cc4 532 status = acpi_evaluate_object(handle, method, &params, resultp);
1da177e4
LT		 533
534 switch (res_type) {
78f81cc4 535 case 'd': /* int */
1da177e4
LT		 536 if (res)
537 *(int *)res = out_obj.integer.value;
538 success = status == AE_OK && out_obj.type == ACPI_TYPE_INTEGER;
539 break;
78f81cc4 540 case 'v': /* void */
1da177e4
LT		 541 success = status == AE_OK;
542 break;
78f81cc4 543 /* add more types as needed */
1da177e4 544 default:
e0c7dfe7 545 printk(TPACPI_ERR "acpi_evalf() called "
1da177e4
LT		 546 "with invalid format character '%c'\n", res_type);
547 return 0;
548 }
549
56b6aeb0 550 if (!success && !quiet)
e0c7dfe7 551 printk(TPACPI_ERR "acpi_evalf(%s, %s, ...) failed: %d\n",
56b6aeb0
HMH		 552 method, fmt0, status);
553
554 return success;
555}
556
35ff8b9f 557static int acpi_ec_read(int i, u8 *p)
56b6aeb0
HMH		 558{
559 int v;
560
561 if (ecrd_handle) {
562 if (!acpi_evalf(ecrd_handle, &v, NULL, "dd", i))
563 return 0;
564 *p = v;
565 } else {
566 if (ec_read(i, p) < 0)
567 return 0;
568 }
569
570 return 1;
571}
572
573static int acpi_ec_write(int i, u8 v)
574{
575 if (ecwr_handle) {
576 if (!acpi_evalf(ecwr_handle, NULL, NULL, "vdd", i, v))
577 return 0;
578 } else {
579 if (ec_write(i, v) < 0)
580 return 0;
581 }
582
583 return 1;
584}
585
c9bea99c
HMH		 586static int issue_thinkpad_cmos_command(int cmos_cmd)
587{
588 if (!cmos_handle)
589 return -ENXIO;
590
591 if (!acpi_evalf(cmos_handle, NULL, NULL, "vd", cmos_cmd))
592 return -EIO;
593
594 return 0;
595}
596
56b6aeb0
HMH		 597/*************************************************************************
598 * ACPI device model
599 */
600
35ff8b9f
HMH		 601#define TPACPI_ACPIHANDLE_INIT(object) \
602 drv_acpi_handle_init(#object, &object##_handle, *object##_parent, \
f74a27d4
HMH		 603 object##_paths, ARRAY_SIZE(object##_paths), &object##_path)
604
8d376cd6 605static void drv_acpi_handle_init(char *name,
5fba344c
HMH		 606 acpi_handle *handle, acpi_handle parent,
607 char **paths, int num_paths, char **path)
56b6aeb0
HMH		 608{
609 int i;
610 acpi_status status;
611
5ae930e6
HMH		 612 vdbg_printk(TPACPI_DBG_INIT, "trying to locate ACPI handle for %s\n",
613 name);
614
56b6aeb0
HMH		 615 for (i = 0; i < num_paths; i++) {
616 status = acpi_get_handle(parent, paths[i], handle);
617 if (ACPI_SUCCESS(status)) {
618 *path = paths[i];
5ae930e6
HMH		 619 dbg_printk(TPACPI_DBG_INIT,
620 "Found ACPI handle %s for %s\n",
621 *path, name);
56b6aeb0
HMH		 622 return;
623 }
624 }
625
5ae930e6
HMH		 626 vdbg_printk(TPACPI_DBG_INIT, "ACPI handle for %s not found\n",
627 name);
56b6aeb0
HMH		 628 *handle = NULL;
629}
630
8d376cd6 631static void dispatch_acpi_notify(acpi_handle handle, u32 event, void *data)
56b6aeb0
HMH		 632{
633 struct ibm_struct *ibm = data;
634
8fef502e
HMH		 635 if (tpacpi_lifecycle != TPACPI_LIFE_RUNNING)
636 return;
637
8d376cd6 638 if (!ibm || !ibm->acpi || !ibm->acpi->notify)
56b6aeb0
HMH		 639 return;
640
8d376cd6 641 ibm->acpi->notify(ibm, event);
56b6aeb0
HMH		 642}
643
8d376cd6 644static int __init setup_acpi_notify(struct ibm_struct *ibm)
56b6aeb0
HMH		 645{
646 acpi_status status;
5ae930e6 647 int rc;
56b6aeb0 648
8d376cd6
HMH		 649 BUG_ON(!ibm->acpi);
650
651 if (!*ibm->acpi->handle)
56b6aeb0
HMH		 652 return 0;
653
5ae930e6 654 vdbg_printk(TPACPI_DBG_INIT,
fe08bc4b
HMH		 655 "setting up ACPI notify for %s\n", ibm->name);
656
5ae930e6
HMH		 657 rc = acpi_bus_get_device(*ibm->acpi->handle, &ibm->acpi->device);
658 if (rc < 0) {
e0c7dfe7 659 printk(TPACPI_ERR "acpi_bus_get_device(%s) failed: %d\n",
5ae930e6 660 ibm->name, rc);
56b6aeb0
HMH		 661 return -ENODEV;
662 }
663
db89b4f0 664 ibm->acpi->device->driver_data = ibm;
8d376cd6 665 sprintf(acpi_device_class(ibm->acpi->device), "%s/%s",
e0c7dfe7 666 TPACPI_ACPI_EVENT_PREFIX,
643f12db 667 ibm->name);
56b6aeb0 668
8d376cd6
HMH		 669 status = acpi_install_notify_handler(*ibm->acpi->handle,
670 ibm->acpi->type, dispatch_acpi_notify, ibm);
56b6aeb0
HMH		 671 if (ACPI_FAILURE(status)) {
672 if (status == AE_ALREADY_EXISTS) {
35ff8b9f
HMH		 673 printk(TPACPI_NOTICE
674 "another device driver is already "
675 "handling %s events\n", ibm->name);
56b6aeb0 676 } else {
35ff8b9f
HMH		 677 printk(TPACPI_ERR
678 "acpi_install_notify_handler(%s) failed: %d\n",
679 ibm->name, status);
56b6aeb0
HMH		 680 }
681 return -ENODEV;
682 }
8d376cd6 683 ibm->flags.acpi_notify_installed = 1;
56b6aeb0
HMH		 684 return 0;
685}
686
8d376cd6 687static int __init tpacpi_device_add(struct acpi_device *device)
56b6aeb0
HMH		 688{
689 return 0;
690}
691
6700121b 692static int __init register_tpacpi_subdriver(struct ibm_struct *ibm)
56b6aeb0 693{
5ae930e6 694 int rc;
56b6aeb0 695
fe08bc4b
HMH		 696 dbg_printk(TPACPI_DBG_INIT,
697 "registering %s as an ACPI driver\n", ibm->name);
698
8d376cd6
HMH		 699 BUG_ON(!ibm->acpi);
700
701 ibm->acpi->driver = kzalloc(sizeof(struct acpi_driver), GFP_KERNEL);
702 if (!ibm->acpi->driver) {
4f778b92
MK		 703 printk(TPACPI_ERR
704 "failed to allocate memory for ibm->acpi->driver\n");
5fba344c 705 return -ENOMEM;
56b6aeb0
HMH		 706 }
707
e0c7dfe7 708 sprintf(ibm->acpi->driver->name, "%s_%s", TPACPI_NAME, ibm->name);
8d376cd6 709 ibm->acpi->driver->ids = ibm->acpi->hid;
1ba90e3a 710
8d376cd6 711 ibm->acpi->driver->ops.add = &tpacpi_device_add;
56b6aeb0 712
5ae930e6
HMH		 713 rc = acpi_bus_register_driver(ibm->acpi->driver);
714 if (rc < 0) {
e0c7dfe7 715 printk(TPACPI_ERR "acpi_bus_register_driver(%s) failed: %d\n",
1ba90e3a 716 ibm->name, rc);
8d376cd6
HMH		 717 kfree(ibm->acpi->driver);
718 ibm->acpi->driver = NULL;
5ae930e6 719 } else if (!rc)
8d376cd6 720 ibm->flags.acpi_driver_registered = 1;
56b6aeb0 721
5ae930e6 722 return rc;
56b6aeb0
HMH		 723}
724
725
726/****************************************************************************
727 ****************************************************************************
728 *
729 * Procfs Helpers
730 *
731 ****************************************************************************
732 ****************************************************************************/
733
8d376cd6
HMH		 734static int dispatch_procfs_read(char *page, char **start, off_t off,
735 int count, int *eof, void *data)
56b6aeb0
HMH		 736{
737 struct ibm_struct *ibm = data;
738 int len;
739
740 if (!ibm || !ibm->read)
741 return -EINVAL;
742
743 len = ibm->read(page);
744 if (len < 0)
745 return len;
746
747 if (len <= off + count)
748 *eof = 1;
749 *start = page + off;
750 len -= off;
751 if (len > count)
752 len = count;
753 if (len < 0)
754 len = 0;
755
756 return len;
757}
758
8d376cd6 759static int dispatch_procfs_write(struct file *file,
35ff8b9f 760 const char __user *userbuf,
8d376cd6 761 unsigned long count, void *data)
56b6aeb0
HMH		 762{
763 struct ibm_struct *ibm = data;
764 char *kernbuf;
765 int ret;
766
767 if (!ibm || !ibm->write)
768 return -EINVAL;
5b05d469
MB		 769 if (count > PAGE_SIZE - 2)
770 return -EINVAL;
56b6aeb0
HMH		 771
772 kernbuf = kmalloc(count + 2, GFP_KERNEL);
773 if (!kernbuf)
774 return -ENOMEM;
1da177e4 775
56b6aeb0
HMH		 776 if (copy_from_user(kernbuf, userbuf, count)) {
777 kfree(kernbuf);
778 return -EFAULT;
779 }
1da177e4 780
56b6aeb0
HMH		 781 kernbuf[count] = 0;
782 strcat(kernbuf, ",");
783 ret = ibm->write(kernbuf);
784 if (ret == 0)
785 ret = count;
1da177e4 786
56b6aeb0
HMH		 787 kfree(kernbuf);
788
789 return ret;
1da177e4
LT		 790}
791
792static char *next_cmd(char **cmds)
793{
794 char *start = *cmds;
795 char *end;
796
797 while ((end = strchr(start, ',')) && end == start)
798 start = end + 1;
799
800 if (!end)
801 return NULL;
802
803 *end = 0;
804 *cmds = end + 1;
805 return start;
806}
807
56b6aeb0 808
54ae1501
HMH		 809/****************************************************************************
810 ****************************************************************************
811 *
7f5d1cd6 812 * Device model: input, hwmon and platform
54ae1501
HMH		 813 *
814 ****************************************************************************
815 ****************************************************************************/
816
94954cc6 817static struct platform_device *tpacpi_pdev;
7fd40029 818static struct platform_device *tpacpi_sensors_pdev;
1beeffe4 819static struct device *tpacpi_hwmon;
7f5d1cd6 820static struct input_dev *tpacpi_inputdev;
8523ed6f 821static struct mutex tpacpi_inputdev_send_mutex;
b21a15f6 822static LIST_HEAD(tpacpi_all_drivers);
e295e850 823
083f1760
HMH		 824static int tpacpi_suspend_handler(struct platform_device *pdev,
825 pm_message_t state)
826{
827 struct ibm_struct *ibm, *itmp;
828
829 list_for_each_entry_safe(ibm, itmp,
830 &tpacpi_all_drivers,
831 all_drivers) {
832 if (ibm->suspend)
833 (ibm->suspend)(state);
834 }
835
836 return 0;
837}
838
e295e850
HMH		 839static int tpacpi_resume_handler(struct platform_device *pdev)
840{
841 struct ibm_struct *ibm, *itmp;
842
843 list_for_each_entry_safe(ibm, itmp,
844 &tpacpi_all_drivers,
845 all_drivers) {
846 if (ibm->resume)
847 (ibm->resume)();
848 }
849
850 return 0;
851}
852
90d9d3c7
HMH		 853static void tpacpi_shutdown_handler(struct platform_device *pdev)
854{
855 struct ibm_struct *ibm, *itmp;
856
857 list_for_each_entry_safe(ibm, itmp,
858 &tpacpi_all_drivers,
859 all_drivers) {
860 if (ibm->shutdown)
861 (ibm->shutdown)();
862 }
863}
864
54ae1501
HMH		 865static struct platform_driver tpacpi_pdriver = {
866 .driver = {
e0c7dfe7 867 .name = TPACPI_DRVR_NAME,
54ae1501
HMH		 868 .owner = THIS_MODULE,
869 },
083f1760 870 .suspend = tpacpi_suspend_handler,
e295e850 871 .resume = tpacpi_resume_handler,
90d9d3c7 872 .shutdown = tpacpi_shutdown_handler,
54ae1501
HMH		 873};
874
7fd40029
HMH		 875static struct platform_driver tpacpi_hwmon_pdriver = {
876 .driver = {
e0c7dfe7 877 .name = TPACPI_HWMON_DRVR_NAME,
7fd40029
HMH		 878 .owner = THIS_MODULE,
879 },
880};
54ae1501 881
176750d6 882/*************************************************************************
b21a15f6 883 * sysfs support helpers
176750d6
HMH		 884 */
885
b21a15f6
HMH		 886struct attribute_set {
887 unsigned int members, max_members;
888 struct attribute_group group;
176750d6
HMH		 889};
890
7252374a
HMH		 891struct attribute_set_obj {
892 struct attribute_set s;
893 struct attribute *a;
894} __attribute__((packed));
895
896static struct attribute_set *create_attr_set(unsigned int max_members,
35ff8b9f 897 const char *name)
7252374a
HMH		 898{
899 struct attribute_set_obj *sobj;
900
901 if (max_members == 0)
902 return NULL;
903
904 /* Allocates space for implicit NULL at the end too */
905 sobj = kzalloc(sizeof(struct attribute_set_obj) +
906 max_members * sizeof(struct attribute *),
907 GFP_KERNEL);
908 if (!sobj)
909 return NULL;
910 sobj->s.max_members = max_members;
911 sobj->s.group.attrs = &sobj->a;
912 sobj->s.group.name = name;
913
914 return &sobj->s;
915}
916
f74a27d4
HMH		 917#define destroy_attr_set(_set) \
918 kfree(_set);
919
7252374a 920/* not multi-threaded safe, use it in a single thread per set */
35ff8b9f 921static int add_to_attr_set(struct attribute_set *s, struct attribute *attr)
7252374a
HMH		 922{
923 if (!s || !attr)
924 return -EINVAL;
925
926 if (s->members >= s->max_members)
927 return -ENOMEM;
928
929 s->group.attrs[s->members] = attr;
930 s->members++;
931
932 return 0;
933}
934
35ff8b9f 935static int add_many_to_attr_set(struct attribute_set *s,
7252374a
HMH		 936 struct attribute **attr,
937 unsigned int count)
938{
939 int i, res;
940
941 for (i = 0; i < count; i++) {
942 res = add_to_attr_set(s, attr[i]);
943 if (res)
944 return res;
945 }
946
947 return 0;
948}
949
35ff8b9f 950static void delete_attr_set(struct attribute_set *s, struct kobject *kobj)
7252374a
HMH		 951{
952 sysfs_remove_group(kobj, &s->group);
953 destroy_attr_set(s);
954}
955
f74a27d4
HMH		 956#define register_attr_set_with_sysfs(_attr_set, _kobj) \
957 sysfs_create_group(_kobj, &_attr_set->group)
958
7252374a
HMH		 959static int parse_strtoul(const char *buf,
960 unsigned long max, unsigned long *value)
961{
962 char *endp;
963
32afbf07
HMH		 964 while (*buf && isspace(*buf))
965 buf++;
7252374a
HMH		 966 *value = simple_strtoul(buf, &endp, 0);
967 while (*endp && isspace(*endp))
968 endp++;
969 if (*endp || *value > max)
970 return -EINVAL;
971
972 return 0;
973}
974
d64c81c4
HMH		 975static void tpacpi_disable_brightness_delay(void)
976{
977 if (acpi_evalf(hkey_handle, NULL, "PWMS", "qvd", 0))
978 printk(TPACPI_NOTICE
979 "ACPI backlight control delay disabled\n");
980}
981
b5972796
HMH		 982static int __init tpacpi_query_bcl_levels(acpi_handle handle)
983{
984 struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
985 union acpi_object *obj;
986 int rc;
987
988 if (ACPI_SUCCESS(acpi_evaluate_object(handle, NULL, NULL, &buffer))) {
989 obj = (union acpi_object *)buffer.pointer;
990 if (!obj || (obj->type != ACPI_TYPE_PACKAGE)) {
991 printk(TPACPI_ERR "Unknown _BCL data, "
992 "please report this to %s\n", TPACPI_MAIL);
993 rc = 0;
994 } else {
995 rc = obj->package.count;
996 }
997 } else {
998 return 0;
999 }
1000
1001 kfree(buffer.pointer);
1002 return rc;
1003}
1004
1005static acpi_status __init tpacpi_acpi_walk_find_bcl(acpi_handle handle,
1006 u32 lvl, void *context, void **rv)
1007{
1008 char name[ACPI_PATH_SEGMENT_LENGTH];
1009 struct acpi_buffer buffer = { sizeof(name), &name };
1010
1011 if (ACPI_SUCCESS(acpi_get_name(handle, ACPI_SINGLE_NAME, &buffer)) &&
1012 !strncmp("_BCL", name, sizeof(name) - 1)) {
1013 BUG_ON(!rv || !*rv);
1014 **(int **)rv = tpacpi_query_bcl_levels(handle);
1015 return AE_CTRL_TERMINATE;
1016 } else {
1017 return AE_OK;
1018 }
1019}
1020
1021/*
1022 * Returns 0 (no ACPI _BCL or _BCL invalid), or size of brightness map
1023 */
1024static int __init tpacpi_check_std_acpi_brightness_support(void)
1025{
1026 int status;
1027 int bcl_levels = 0;
1028 void *bcl_ptr = &bcl_levels;
1029
1030 if (!vid_handle) {
1031 TPACPI_ACPIHANDLE_INIT(vid);
1032 }
1033 if (!vid_handle)
1034 return 0;
1035
1036 /*
1037 * Search for a _BCL method, and execute it. This is safe on all
1038 * ThinkPads, and as a side-effect, _BCL will place a Lenovo Vista
1039 * BIOS in ACPI backlight control mode. We do NOT have to care
1040 * about calling the _BCL method in an enabled video device, any
1041 * will do for our purposes.
1042 */
1043
1044 status = acpi_walk_namespace(ACPI_TYPE_METHOD, vid_handle, 3,
1045 tpacpi_acpi_walk_find_bcl, NULL,
1046 &bcl_ptr);
1047
1048 if (ACPI_SUCCESS(status) && bcl_levels > 2) {
1049 tp_features.bright_acpimode = 1;
1050 return (bcl_levels - 2);
1051 }
1052
1053 return 0;
1054}
1055
19d337df
JB		 1056static void printk_deprecated_attribute(const char * const what,
1057 const char * const details)
1058{
1059 tpacpi_log_usertask("deprecated sysfs attribute");
1060 printk(TPACPI_WARN "WARNING: sysfs attribute %s is deprecated and "
1061 "will be removed. %s\n",
1062 what, details);
1063}
1064
1065/*************************************************************************
1066 * rfkill and radio control support helpers
1067 */
1068
1069/*
1070 * ThinkPad-ACPI firmware handling model:
1071 *
1072 * WLSW (master wireless switch) is event-driven, and is common to all
1073 * firmware-controlled radios. It cannot be controlled, just monitored,
1074 * as expected. It overrides all radio state in firmware
1075 *
1076 * The kernel, a masked-off hotkey, and WLSW can change the radio state
1077 * (TODO: verify how WLSW interacts with the returned radio state).
1078 *
1079 * The only time there are shadow radio state changes, is when
1080 * masked-off hotkeys are used.
1081 */
1082
1083/*
1084 * Internal driver API for radio state:
1085 *
1086 * int: < 0 = error, otherwise enum tpacpi_rfkill_state
1087 * bool: true means radio blocked (off)
1088 */
1089enum tpacpi_rfkill_state {
1090 TPACPI_RFK_RADIO_OFF = 0,
1091 TPACPI_RFK_RADIO_ON
1092};
1093
1094/* rfkill switches */
1095enum tpacpi_rfk_id {
1096 TPACPI_RFK_BLUETOOTH_SW_ID = 0,
1097 TPACPI_RFK_WWAN_SW_ID,
1098 TPACPI_RFK_UWB_SW_ID,
1099 TPACPI_RFK_SW_MAX
1100};
1101
1102static const char *tpacpi_rfkill_names[] = {
1103 [TPACPI_RFK_BLUETOOTH_SW_ID] = "bluetooth",
1104 [TPACPI_RFK_WWAN_SW_ID] = "wwan",
1105 [TPACPI_RFK_UWB_SW_ID] = "uwb",
1106 [TPACPI_RFK_SW_MAX] = NULL
1107};
1108
1109/* ThinkPad-ACPI rfkill subdriver */
1110struct tpacpi_rfk {
1111 struct rfkill *rfkill;
1112 enum tpacpi_rfk_id id;
1113 const struct tpacpi_rfk_ops *ops;
1114};
1115
1116struct tpacpi_rfk_ops {
1117 /* firmware interface */
1118 int (*get_status)(void);
1119 int (*set_status)(const enum tpacpi_rfkill_state);
1120};
1121
1122static struct tpacpi_rfk *tpacpi_rfkill_switches[TPACPI_RFK_SW_MAX];
1123
1124/* Query FW and update rfkill sw state for a given rfkill switch */
1125static int tpacpi_rfk_update_swstate(const struct tpacpi_rfk *tp_rfk)
1126{
1127 int status;
1128
1129 if (!tp_rfk)
1130 return -ENODEV;
1131
1132 status = (tp_rfk->ops->get_status)();
1133 if (status < 0)
1134 return status;
1135
1136 rfkill_set_sw_state(tp_rfk->rfkill,
1137 (status == TPACPI_RFK_RADIO_OFF));
1138
1139 return status;
1140}
1141
1142/* Query FW and update rfkill sw state for all rfkill switches */
1143static void tpacpi_rfk_update_swstate_all(void)
1144{
1145 unsigned int i;
1146
1147 for (i = 0; i < TPACPI_RFK_SW_MAX; i++)
1148 tpacpi_rfk_update_swstate(tpacpi_rfkill_switches[i]);
1149}
1150
1151/*
1152 * Sync the HW-blocking state of all rfkill switches,
1153 * do notice it causes the rfkill core to schedule uevents
1154 */
1155static void tpacpi_rfk_update_hwblock_state(bool blocked)
1156{
1157 unsigned int i;
1158 struct tpacpi_rfk *tp_rfk;
1159
1160 for (i = 0; i < TPACPI_RFK_SW_MAX; i++) {
1161 tp_rfk = tpacpi_rfkill_switches[i];
1162 if (tp_rfk) {
1163 if (rfkill_set_hw_state(tp_rfk->rfkill,
1164 blocked)) {
1165 /* ignore -- we track sw block */
1166 }
1167 }
1168 }
1169}
1170
1171/* Call to get the WLSW state from the firmware */
1172static int hotkey_get_wlsw(void);
1173
1174/* Call to query WLSW state and update all rfkill switches */
1175static bool tpacpi_rfk_check_hwblock_state(void)
1176{
1177 int res = hotkey_get_wlsw();
1178 int hw_blocked;
1179
1180 /* When unknown or unsupported, we have to assume it is unblocked */
1181 if (res < 0)
1182 return false;
1183
1184 hw_blocked = (res == TPACPI_RFK_RADIO_OFF);
1185 tpacpi_rfk_update_hwblock_state(hw_blocked);
1186
1187 return hw_blocked;
1188}
1189
1190static int tpacpi_rfk_hook_set_block(void *data, bool blocked)
1191{
1192 struct tpacpi_rfk *tp_rfk = data;
1193 int res;
1194
1195 dbg_printk(TPACPI_DBG_RFKILL,
1196 "request to change radio state to %s\n",
1197 blocked ? "blocked" : "unblocked");
1198
1199 /* try to set radio state */
1200 res = (tp_rfk->ops->set_status)(blocked ?
1201 TPACPI_RFK_RADIO_OFF : TPACPI_RFK_RADIO_ON);
1202
1203 /* and update the rfkill core with whatever the FW really did */
1204 tpacpi_rfk_update_swstate(tp_rfk);
1205
1206 return (res < 0) ? res : 0;
1207}
1208
1209static const struct rfkill_ops tpacpi_rfk_rfkill_ops = {
1210 .set_block = tpacpi_rfk_hook_set_block,
1211};
1212
1213static int __init tpacpi_new_rfkill(const enum tpacpi_rfk_id id,
1214 const struct tpacpi_rfk_ops *tp_rfkops,
0e74dc26
HMH		 1215 const enum rfkill_type rfktype,
1216 const char *name,
19d337df 1217 const bool set_default)
0e74dc26 1218{
19d337df 1219 struct tpacpi_rfk *atp_rfk;
0e74dc26 1220 int res;
06d5caf4
AJ		 1221 bool sw_state = false;
1222 int sw_status;
90d9d3c7 1223
19d337df
JB		 1224 BUG_ON(id >= TPACPI_RFK_SW_MAX || tpacpi_rfkill_switches[id]);
1225
19d337df
JB		 1226 atp_rfk = kzalloc(sizeof(struct tpacpi_rfk), GFP_KERNEL);
1227 if (atp_rfk)
1228 atp_rfk->rfkill = rfkill_alloc(name,
1229 &tpacpi_pdev->dev,
1230 rfktype,
1231 &tpacpi_rfk_rfkill_ops,
1232 atp_rfk);
1233 if (!atp_rfk || !atp_rfk->rfkill) {
0e74dc26
HMH		 1234 printk(TPACPI_ERR
1235 "failed to allocate memory for rfkill class\n");
19d337df 1236 kfree(atp_rfk);
0e74dc26
HMH		 1237 return -ENOMEM;
1238 }
1239
19d337df
JB		 1240 atp_rfk->id = id;
1241 atp_rfk->ops = tp_rfkops;
0e74dc26 1242
06d5caf4
AJ		 1243 sw_status = (tp_rfkops->get_status)();
1244 if (sw_status < 0) {
b3fa1329
AJ		 1245 printk(TPACPI_ERR
1246 "failed to read initial state for %s, error %d\n",
06d5caf4 1247 name, sw_status);
b3fa1329 1248 } else {
06d5caf4 1249 sw_state = (sw_status == TPACPI_RFK_RADIO_OFF);
b3fa1329
AJ		 1250 if (set_default) {
1251 /* try to keep the initial state, since we ask the
1252 * firmware to preserve it across S5 in NVRAM */
06d5caf4 1253 rfkill_init_sw_state(atp_rfk->rfkill, sw_state);
b3fa1329
AJ		 1254 }
1255 }
1256 rfkill_set_hw_state(atp_rfk->rfkill, tpacpi_rfk_check_hwblock_state());
19d337df
JB		 1257
1258 res = rfkill_register(atp_rfk->rfkill);
0e74dc26
HMH		 1259 if (res < 0) {
1260 printk(TPACPI_ERR
1261 "failed to register %s rfkill switch: %d\n",
1262 name, res);
19d337df
JB		 1263 rfkill_destroy(atp_rfk->rfkill);
1264 kfree(atp_rfk);
0e74dc26
HMH		 1265 return res;
1266 }
1267
19d337df 1268 tpacpi_rfkill_switches[id] = atp_rfk;
0e74dc26
HMH		 1269 return 0;
1270}
1271
19d337df 1272static void tpacpi_destroy_rfkill(const enum tpacpi_rfk_id id)
73a94d86 1273{
19d337df
JB		 1274 struct tpacpi_rfk *tp_rfk;
1275
1276 BUG_ON(id >= TPACPI_RFK_SW_MAX);
1277
1278 tp_rfk = tpacpi_rfkill_switches[id];
1279 if (tp_rfk) {
1280 rfkill_unregister(tp_rfk->rfkill);
1281 tpacpi_rfkill_switches[id] = NULL;
1282 kfree(tp_rfk);
1283 }
73a94d86
HMH		 1284}
1285
1286static void printk_deprecated_rfkill_attribute(const char * const what)
1287{
1288 printk_deprecated_attribute(what,
1289 "Please switch to generic rfkill before year 2010");
1290}
1291
19d337df
JB		 1292/* sysfs <radio> enable ------------------------------------------------ */
1293static ssize_t tpacpi_rfk_sysfs_enable_show(const enum tpacpi_rfk_id id,
1294 struct device_attribute *attr,
1295 char *buf)
1296{
1297 int status;
1298
1299 printk_deprecated_rfkill_attribute(attr->attr.name);
1300
1301 /* This is in the ABI... */
1302 if (tpacpi_rfk_check_hwblock_state()) {
1303 status = TPACPI_RFK_RADIO_OFF;
1304 } else {
1305 status = tpacpi_rfk_update_swstate(tpacpi_rfkill_switches[id]);
1306 if (status < 0)
1307 return status;
1308 }
1309
1310 return snprintf(buf, PAGE_SIZE, "%d\n",
1311 (status == TPACPI_RFK_RADIO_ON) ? 1 : 0);
1312}
1313
1314static ssize_t tpacpi_rfk_sysfs_enable_store(const enum tpacpi_rfk_id id,
1315 struct device_attribute *attr,
1316 const char *buf, size_t count)
1317{
1318 unsigned long t;
1319 int res;
1320
1321 printk_deprecated_rfkill_attribute(attr->attr.name);
1322
1323 if (parse_strtoul(buf, 1, &t))
1324 return -EINVAL;
1325
1326 tpacpi_disclose_usertask(attr->attr.name, "set to %ld\n", t);
1327
1328 /* This is in the ABI... */
1329 if (tpacpi_rfk_check_hwblock_state() && !!t)
1330 return -EPERM;
1331
1332 res = tpacpi_rfkill_switches[id]->ops->set_status((!!t) ?
1333 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF);
1334 tpacpi_rfk_update_swstate(tpacpi_rfkill_switches[id]);
1335
1336 return (res < 0) ? res : count;
1337}
1338
1339/* procfs -------------------------------------------------------------- */
1340static int tpacpi_rfk_procfs_read(const enum tpacpi_rfk_id id, char *p)
1341{
1342 int len = 0;
1343
1344 if (id >= TPACPI_RFK_SW_MAX)
1345 len += sprintf(p + len, "status:\t\tnot supported\n");
1346 else {
1347 int status;
1348
1349 /* This is in the ABI... */
1350 if (tpacpi_rfk_check_hwblock_state()) {
1351 status = TPACPI_RFK_RADIO_OFF;
1352 } else {
1353 status = tpacpi_rfk_update_swstate(
1354 tpacpi_rfkill_switches[id]);
1355 if (status < 0)
1356 return status;
1357 }
1358
1359 len += sprintf(p + len, "status:\t\t%s\n",
1360 (status == TPACPI_RFK_RADIO_ON) ?
1361 "enabled" : "disabled");
1362 len += sprintf(p + len, "commands:\tenable, disable\n");
1363 }
1364
1365 return len;
1366}
1367
1368static int tpacpi_rfk_procfs_write(const enum tpacpi_rfk_id id, char *buf)
1369{
1370 char *cmd;
1371 int status = -1;
1372 int res = 0;
1373
1374 if (id >= TPACPI_RFK_SW_MAX)
1375 return -ENODEV;
1376
1377 while ((cmd = next_cmd(&buf))) {
1378 if (strlencmp(cmd, "enable") == 0)
1379 status = TPACPI_RFK_RADIO_ON;
1380 else if (strlencmp(cmd, "disable") == 0)
1381 status = TPACPI_RFK_RADIO_OFF;
1382 else
1383 return -EINVAL;
1384 }
1385
1386 if (status != -1) {
1387 tpacpi_disclose_usertask("procfs", "attempt to %s %s\n",
1388 (status == TPACPI_RFK_RADIO_ON) ?
1389 "enable" : "disable",
1390 tpacpi_rfkill_names[id]);
1391 res = (tpacpi_rfkill_switches[id]->ops->set_status)(status);
1392 tpacpi_rfk_update_swstate(tpacpi_rfkill_switches[id]);
1393 }
1394
1395 return res;
1396}
1397
56b6aeb0 1398/*************************************************************************
b21a15f6 1399 * thinkpad-acpi driver attributes
56b6aeb0
HMH		 1400 */
1401
b21a15f6
HMH		 1402/* interface_version --------------------------------------------------- */
1403static ssize_t tpacpi_driver_interface_version_show(
1404 struct device_driver *drv,
1405 char *buf)
1da177e4 1406{
b21a15f6
HMH		 1407 return snprintf(buf, PAGE_SIZE, "0x%08x\n", TPACPI_SYSFS_VERSION);
1408}
1409
1410static DRIVER_ATTR(interface_version, S_IRUGO,
1411 tpacpi_driver_interface_version_show, NULL);
1412
1413/* debug_level --------------------------------------------------------- */
1414static ssize_t tpacpi_driver_debug_show(struct device_driver *drv,
1415 char *buf)
1416{
1417 return snprintf(buf, PAGE_SIZE, "0x%04x\n", dbg_level);
1418}
1419
1420static ssize_t tpacpi_driver_debug_store(struct device_driver *drv,
1421 const char *buf, size_t count)
1422{
1423 unsigned long t;
1424
1425 if (parse_strtoul(buf, 0xffff, &t))
1426 return -EINVAL;
1427
1428 dbg_level = t;
1429
1430 return count;
1431}
1432
1433static DRIVER_ATTR(debug_level, S_IWUSR | S_IRUGO,
1434 tpacpi_driver_debug_show, tpacpi_driver_debug_store);
1435
1436/* version ------------------------------------------------------------- */
1437static ssize_t tpacpi_driver_version_show(struct device_driver *drv,
1438 char *buf)
1439{
35ff8b9f
HMH		 1440 return snprintf(buf, PAGE_SIZE, "%s v%s\n",
1441 TPACPI_DESC, TPACPI_VERSION);
b21a15f6
HMH		 1442}
1443
1444static DRIVER_ATTR(version, S_IRUGO,
1445 tpacpi_driver_version_show, NULL);
1446
1447/* --------------------------------------------------------------------- */
1448
a73f3091
HMH		 1449#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
1450
a73f3091
HMH		 1451/* wlsw_emulstate ------------------------------------------------------ */
1452static ssize_t tpacpi_driver_wlsw_emulstate_show(struct device_driver *drv,
1453 char *buf)
1454{
1455 return snprintf(buf, PAGE_SIZE, "%d\n", !!tpacpi_wlsw_emulstate);
1456}
1457
1458static ssize_t tpacpi_driver_wlsw_emulstate_store(struct device_driver *drv,
1459 const char *buf, size_t count)
1460{
1461 unsigned long t;
1462
1463 if (parse_strtoul(buf, 1, &t))
1464 return -EINVAL;
1465
19d337df 1466 if (tpacpi_wlsw_emulstate != !!t) {
a73f3091 1467 tpacpi_wlsw_emulstate = !!t;
19d337df
JB		 1468 tpacpi_rfk_update_hwblock_state(!t); /* negative logic */
1469 }
a73f3091
HMH		 1470
1471 return count;
1472}
1473
1474static DRIVER_ATTR(wlsw_emulstate, S_IWUSR | S_IRUGO,
1475 tpacpi_driver_wlsw_emulstate_show,
1476 tpacpi_driver_wlsw_emulstate_store);
1477
1478/* bluetooth_emulstate ------------------------------------------------- */
1479static ssize_t tpacpi_driver_bluetooth_emulstate_show(
1480 struct device_driver *drv,
1481 char *buf)
1482{
1483 return snprintf(buf, PAGE_SIZE, "%d\n", !!tpacpi_bluetooth_emulstate);
1484}
1485
1486static ssize_t tpacpi_driver_bluetooth_emulstate_store(
1487 struct device_driver *drv,
1488 const char *buf, size_t count)
1489{
1490 unsigned long t;
1491
1492 if (parse_strtoul(buf, 1, &t))
1493 return -EINVAL;
1494
1495 tpacpi_bluetooth_emulstate = !!t;
1496
1497 return count;
1498}
1499
1500static DRIVER_ATTR(bluetooth_emulstate, S_IWUSR | S_IRUGO,
1501 tpacpi_driver_bluetooth_emulstate_show,
1502 tpacpi_driver_bluetooth_emulstate_store);
1503
1504/* wwan_emulstate ------------------------------------------------- */
1505static ssize_t tpacpi_driver_wwan_emulstate_show(
1506 struct device_driver *drv,
1507 char *buf)
1508{
1509 return snprintf(buf, PAGE_SIZE, "%d\n", !!tpacpi_wwan_emulstate);
1510}
1511
1512static ssize_t tpacpi_driver_wwan_emulstate_store(
1513 struct device_driver *drv,
1514 const char *buf, size_t count)
1515{
1516 unsigned long t;
1517
1518 if (parse_strtoul(buf, 1, &t))
1519 return -EINVAL;
1520
1521 tpacpi_wwan_emulstate = !!t;
1522
1523 return count;
1524}
1525
1526static DRIVER_ATTR(wwan_emulstate, S_IWUSR | S_IRUGO,
1527 tpacpi_driver_wwan_emulstate_show,
1528 tpacpi_driver_wwan_emulstate_store);
1529
0045c0aa
HMH		 1530/* uwb_emulstate ------------------------------------------------- */
1531static ssize_t tpacpi_driver_uwb_emulstate_show(
1532 struct device_driver *drv,
1533 char *buf)
1534{
1535 return snprintf(buf, PAGE_SIZE, "%d\n", !!tpacpi_uwb_emulstate);
1536}
1537
1538static ssize_t tpacpi_driver_uwb_emulstate_store(
1539 struct device_driver *drv,
1540 const char *buf, size_t count)
1541{
1542 unsigned long t;
1543
1544 if (parse_strtoul(buf, 1, &t))
1545 return -EINVAL;
1546
1547 tpacpi_uwb_emulstate = !!t;
1548
1549 return count;
1550}
1551
1552static DRIVER_ATTR(uwb_emulstate, S_IWUSR | S_IRUGO,
1553 tpacpi_driver_uwb_emulstate_show,
1554 tpacpi_driver_uwb_emulstate_store);
a73f3091
HMH		 1555#endif
1556
1557/* --------------------------------------------------------------------- */
1558
35ff8b9f 1559static struct driver_attribute *tpacpi_driver_attributes[] = {
b21a15f6
HMH		 1560 &driver_attr_debug_level, &driver_attr_version,
1561 &driver_attr_interface_version,
1562};
1563
1564static int __init tpacpi_create_driver_attributes(struct device_driver *drv)
1565{
1566 int i, res;
1567
1568 i = 0;
1569 res = 0;
1570 while (!res && i < ARRAY_SIZE(tpacpi_driver_attributes)) {
1571 res = driver_create_file(drv, tpacpi_driver_attributes[i]);
1572 i++;
1573 }
1574
a73f3091
HMH		 1575#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
1576 if (!res && dbg_wlswemul)
1577 res = driver_create_file(drv, &driver_attr_wlsw_emulstate);
1578 if (!res && dbg_bluetoothemul)
1579 res = driver_create_file(drv, &driver_attr_bluetooth_emulstate);
1580 if (!res && dbg_wwanemul)
1581 res = driver_create_file(drv, &driver_attr_wwan_emulstate);
0045c0aa
HMH		 1582 if (!res && dbg_uwbemul)
1583 res = driver_create_file(drv, &driver_attr_uwb_emulstate);
a73f3091
HMH		 1584#endif
1585
b21a15f6
HMH		 1586 return res;
1587}
1588
1589static void tpacpi_remove_driver_attributes(struct device_driver *drv)
1590{
1591 int i;
1592
35ff8b9f 1593 for (i = 0; i < ARRAY_SIZE(tpacpi_driver_attributes); i++)
b21a15f6 1594 driver_remove_file(drv, tpacpi_driver_attributes[i]);
a73f3091
HMH		 1595
1596#ifdef THINKPAD_ACPI_DEBUGFACILITIES
1597 driver_remove_file(drv, &driver_attr_wlsw_emulstate);
1598 driver_remove_file(drv, &driver_attr_bluetooth_emulstate);
1599 driver_remove_file(drv, &driver_attr_wwan_emulstate);
0045c0aa 1600 driver_remove_file(drv, &driver_attr_uwb_emulstate);
a73f3091 1601#endif
b21a15f6
HMH		 1602}
1603
1604/****************************************************************************
1605 ****************************************************************************
1606 *
1607 * Subdrivers
1608 *
1609 ****************************************************************************
1610 ****************************************************************************/
1611
1612/*************************************************************************
1613 * thinkpad-acpi init subdriver
1614 */
1615
1616static int __init thinkpad_acpi_driver_init(struct ibm_init_struct *iibm)
1617{
e0c7dfe7
HMH		 1618 printk(TPACPI_INFO "%s v%s\n", TPACPI_DESC, TPACPI_VERSION);
1619 printk(TPACPI_INFO "%s\n", TPACPI_URL);
b21a15f6 1620
e0c7dfe7 1621 printk(TPACPI_INFO "ThinkPad BIOS %s, EC %s\n",
b21a15f6
HMH		 1622 (thinkpad_id.bios_version_str) ?
1623 thinkpad_id.bios_version_str : "unknown",
1624 (thinkpad_id.ec_version_str) ?
1625 thinkpad_id.ec_version_str : "unknown");
d5a2f2f1
HMH		 1626
1627 if (thinkpad_id.vendor && thinkpad_id.model_str)
8c74adbc 1628 printk(TPACPI_INFO "%s %s, model %s\n",
d5a2f2f1
HMH		 1629 (thinkpad_id.vendor == PCI_VENDOR_ID_IBM) ?
1630 "IBM" : ((thinkpad_id.vendor ==
1631 PCI_VENDOR_ID_LENOVO) ?
1632 "Lenovo" : "Unknown vendor"),
8c74adbc
HMH		 1633 thinkpad_id.model_str,
1634 (thinkpad_id.nummodel_str) ?
1635 thinkpad_id.nummodel_str : "unknown");
3945ac36 1636
1da177e4
LT		 1637 return 0;
1638}
1639
643f12db 1640static int thinkpad_acpi_driver_read(char *p)
1da177e4
LT		 1641{
1642 int len = 0;
1643
e0c7dfe7
HMH		 1644 len += sprintf(p + len, "driver:\t\t%s\n", TPACPI_DESC);
1645 len += sprintf(p + len, "version:\t%s\n", TPACPI_VERSION);
1da177e4
LT		 1646
1647 return len;
1648}
1649
a5763f22
HMH		 1650static struct ibm_struct thinkpad_acpi_driver_data = {
1651 .name = "driver",
1652 .read = thinkpad_acpi_driver_read,
1653};
1654
56b6aeb0
HMH		 1655/*************************************************************************
1656 * Hotkey subdriver
1657 */
1658
f74a27d4
HMH		 1659enum { /* hot key scan codes (derived from ACPI DSDT) */
1660 TP_ACPI_HOTKEYSCAN_FNF1 = 0,
1661 TP_ACPI_HOTKEYSCAN_FNF2,
1662 TP_ACPI_HOTKEYSCAN_FNF3,
1663 TP_ACPI_HOTKEYSCAN_FNF4,
1664 TP_ACPI_HOTKEYSCAN_FNF5,
1665 TP_ACPI_HOTKEYSCAN_FNF6,
1666 TP_ACPI_HOTKEYSCAN_FNF7,
1667 TP_ACPI_HOTKEYSCAN_FNF8,
1668 TP_ACPI_HOTKEYSCAN_FNF9,
1669 TP_ACPI_HOTKEYSCAN_FNF10,
1670 TP_ACPI_HOTKEYSCAN_FNF11,
1671 TP_ACPI_HOTKEYSCAN_FNF12,
1672 TP_ACPI_HOTKEYSCAN_FNBACKSPACE,
1673 TP_ACPI_HOTKEYSCAN_FNINSERT,
1674 TP_ACPI_HOTKEYSCAN_FNDELETE,
1675 TP_ACPI_HOTKEYSCAN_FNHOME,
1676 TP_ACPI_HOTKEYSCAN_FNEND,
1677 TP_ACPI_HOTKEYSCAN_FNPAGEUP,
1678 TP_ACPI_HOTKEYSCAN_FNPAGEDOWN,
1679 TP_ACPI_HOTKEYSCAN_FNSPACE,
1680 TP_ACPI_HOTKEYSCAN_VOLUMEUP,
1681 TP_ACPI_HOTKEYSCAN_VOLUMEDOWN,
1682 TP_ACPI_HOTKEYSCAN_MUTE,
1683 TP_ACPI_HOTKEYSCAN_THINKPAD,
1684};
1685
01e88f25
HMH		 1686enum { /* Keys available through NVRAM polling */
1687 TPACPI_HKEY_NVRAM_KNOWN_MASK = 0x00fb88c0U,
1688 TPACPI_HKEY_NVRAM_GOOD_MASK = 0x00fb8000U,
1689};
1690
1691enum { /* Positions of some of the keys in hotkey masks */
1692 TP_ACPI_HKEY_DISPSWTCH_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNF7,
1693 TP_ACPI_HKEY_DISPXPAND_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNF8,
1694 TP_ACPI_HKEY_HIBERNATE_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNF12,
1695 TP_ACPI_HKEY_BRGHTUP_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNHOME,
1696 TP_ACPI_HKEY_BRGHTDWN_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNEND,
1697 TP_ACPI_HKEY_THNKLGHT_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNPAGEUP,
1698 TP_ACPI_HKEY_ZOOM_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNSPACE,
1699 TP_ACPI_HKEY_VOLUP_MASK = 1 << TP_ACPI_HOTKEYSCAN_VOLUMEUP,
1700 TP_ACPI_HKEY_VOLDWN_MASK = 1 << TP_ACPI_HOTKEYSCAN_VOLUMEDOWN,
1701 TP_ACPI_HKEY_MUTE_MASK = 1 << TP_ACPI_HOTKEYSCAN_MUTE,
1702 TP_ACPI_HKEY_THINKPAD_MASK = 1 << TP_ACPI_HOTKEYSCAN_THINKPAD,
1703};
1704
1705enum { /* NVRAM to ACPI HKEY group map */
1706 TP_NVRAM_HKEY_GROUP_HK2 = TP_ACPI_HKEY_THINKPAD_MASK |
1707 TP_ACPI_HKEY_ZOOM_MASK |
1708 TP_ACPI_HKEY_DISPSWTCH_MASK |
1709 TP_ACPI_HKEY_HIBERNATE_MASK,
1710 TP_NVRAM_HKEY_GROUP_BRIGHTNESS = TP_ACPI_HKEY_BRGHTUP_MASK |
1711 TP_ACPI_HKEY_BRGHTDWN_MASK,
1712 TP_NVRAM_HKEY_GROUP_VOLUME = TP_ACPI_HKEY_VOLUP_MASK |
1713 TP_ACPI_HKEY_VOLDWN_MASK |
1714 TP_ACPI_HKEY_MUTE_MASK,
1715};
1716
1717#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
1718struct tp_nvram_state {
1719 u16 thinkpad_toggle:1;
1720 u16 zoom_toggle:1;
1721 u16 display_toggle:1;
1722 u16 thinklight_toggle:1;
1723 u16 hibernate_toggle:1;
1724 u16 displayexp_toggle:1;
1725 u16 display_state:1;
1726 u16 brightness_toggle:1;
1727 u16 volume_toggle:1;
1728 u16 mute:1;
1729
1730 u8 brightness_level;
1731 u8 volume_level;
1732};
1733
1734static struct task_struct *tpacpi_hotkey_task;
1735static u32 hotkey_source_mask; /* bit mask 0=ACPI,1=NVRAM */
1736static int hotkey_poll_freq = 10; /* Hz */
1737static struct mutex hotkey_thread_mutex;
1738static struct mutex hotkey_thread_data_mutex;
1739static unsigned int hotkey_config_change;
1740
1741#else /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
1742
1743#define hotkey_source_mask 0U
1744
1745#endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
1746
f74a27d4
HMH		 1747static struct mutex hotkey_mutex;
1748
a713b4d7
HMH		 1749static enum { /* Reasons for waking up */
1750 TP_ACPI_WAKEUP_NONE = 0, /* None or unknown */
1751 TP_ACPI_WAKEUP_BAYEJ, /* Bay ejection request */
1752 TP_ACPI_WAKEUP_UNDOCK, /* Undock request */
1753} hotkey_wakeup_reason;
1754
1755static int hotkey_autosleep_ack;
1756
ae92bd17 1757static u32 hotkey_orig_mask;
9b010de5 1758static u32 hotkey_all_mask;
6a38abbf 1759static u32 hotkey_reserved_mask;
b2c985e7 1760static u32 hotkey_mask;
6a38abbf 1761
b21a15f6
HMH		 1762static unsigned int hotkey_report_mode;
1763
edf0e0e5 1764static u16 *hotkey_keycode_map;
78f81cc4 1765
94954cc6 1766static struct attribute_set *hotkey_dev_attributes;
a0416420 1767
01e88f25
HMH		 1768#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
1769#define HOTKEY_CONFIG_CRITICAL_START \
35ff8b9f
HMH		 1770 do { \
1771 mutex_lock(&hotkey_thread_data_mutex); \
1772 hotkey_config_change++; \
1773 } while (0);
01e88f25
HMH		 1774#define HOTKEY_CONFIG_CRITICAL_END \
1775 mutex_unlock(&hotkey_thread_data_mutex);
1776#else
1777#define HOTKEY_CONFIG_CRITICAL_START
1778#define HOTKEY_CONFIG_CRITICAL_END
1779#endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
1780
6c231bd5
HMH		 1781/* HKEY.MHKG() return bits */
1782#define TP_HOTKEY_TABLET_MASK (1 << 3)
1783
19d337df 1784static int hotkey_get_wlsw(void)
74941a69 1785{
19d337df
JB		 1786 int status;
1787
1788 if (!tp_features.hotkey_wlsw)
1789 return -ENODEV;
1790
a73f3091 1791#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
19d337df
JB		 1792 if (dbg_wlswemul)
1793 return (tpacpi_wlsw_emulstate) ?
1794 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF;
a73f3091 1795#endif
19d337df
JB		 1796
1797 if (!acpi_evalf(hkey_handle, &status, "WLSW", "d"))
74941a69 1798 return -EIO;
19d337df
JB		 1799
1800 return (status) ? TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF;
74941a69
HMH		 1801}
1802
6c231bd5
HMH		 1803static int hotkey_get_tablet_mode(int *status)
1804{
1805 int s;
1806
1807 if (!acpi_evalf(hkey_handle, &s, "MHKG", "d"))
1808 return -EIO;
1809
cee47f5a
HMH		 1810 *status = ((s & TP_HOTKEY_TABLET_MASK) != 0);
1811 return 0;
6c231bd5
HMH		 1812}
1813
b2c985e7
HMH		 1814/*
1815 * Call with hotkey_mutex held
1816 */
1817static int hotkey_mask_get(void)
1818{
01e88f25
HMH		 1819 u32 m = 0;
1820
b2c985e7 1821 if (tp_features.hotkey_mask) {
01e88f25 1822 if (!acpi_evalf(hkey_handle, &m, "DHKN", "d"))
b2c985e7
HMH		 1823 return -EIO;
1824 }
01e88f25 1825 hotkey_mask = m | (hotkey_source_mask & hotkey_mask);
b2c985e7
HMH		 1826
1827 return 0;
1828}
1829
1830/*
1831 * Call with hotkey_mutex held
1832 */
1833static int hotkey_mask_set(u32 mask)
1834{
1835 int i;
1836 int rc = 0;
1837
1838 if (tp_features.hotkey_mask) {
92889022
HMH		 1839 if (!tp_warned.hotkey_mask_ff &&
1840 (mask == 0xffff || mask == 0xffffff ||
1841 mask == 0xffffffff)) {
1842 tp_warned.hotkey_mask_ff = 1;
1843 printk(TPACPI_NOTICE
1844 "setting the hotkey mask to 0x%08x is likely "
1845 "not the best way to go about it\n", mask);
1846 printk(TPACPI_NOTICE
1847 "please consider using the driver defaults, "
1848 "and refer to up-to-date thinkpad-acpi "
1849 "documentation\n");
1850 }
1851
01e88f25 1852 HOTKEY_CONFIG_CRITICAL_START
b2c985e7
HMH		 1853 for (i = 0; i < 32; i++) {
1854 u32 m = 1 << i;
01e88f25
HMH		 1855 /* enable in firmware mask only keys not in NVRAM
1856 * mode, but enable the key in the cached hotkey_mask
1857 * regardless of mode, or the key will end up
1858 * disabled by hotkey_mask_get() */
b2c985e7
HMH		 1859 if (!acpi_evalf(hkey_handle,
1860 NULL, "MHKM", "vdd", i + 1,
01e88f25 1861 !!((mask & ~hotkey_source_mask) & m))) {
b2c985e7
HMH		 1862 rc = -EIO;
1863 break;
1864 } else {
1865 hotkey_mask = (hotkey_mask & ~m) | (mask & m);
1866 }
1867 }
01e88f25 1868 HOTKEY_CONFIG_CRITICAL_END
b2c985e7
HMH		 1869
1870 /* hotkey_mask_get must be called unconditionally below */
01e88f25
HMH		 1871 if (!hotkey_mask_get() && !rc &&
1872 (hotkey_mask & ~hotkey_source_mask) !=
1873 (mask & ~hotkey_source_mask)) {
e0c7dfe7 1874 printk(TPACPI_NOTICE
b2c985e7
HMH		 1875 "requested hot key mask 0x%08x, but "
1876 "firmware forced it to 0x%08x\n",
1877 mask, hotkey_mask);
1878 }
01e88f25
HMH		 1879 } else {
1880#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
1881 HOTKEY_CONFIG_CRITICAL_START
1882 hotkey_mask = mask & hotkey_source_mask;
1883 HOTKEY_CONFIG_CRITICAL_END
1884 hotkey_mask_get();
1885 if (hotkey_mask != mask) {
e0c7dfe7 1886 printk(TPACPI_NOTICE
01e88f25
HMH		 1887 "requested hot key mask 0x%08x, "
1888 "forced to 0x%08x (NVRAM poll mask is "
1889 "0x%08x): no firmware mask support\n",
1890 mask, hotkey_mask, hotkey_source_mask);
1891 }
1892#else
1893 hotkey_mask_get();
1894 rc = -ENXIO;
1895#endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
b2c985e7
HMH		 1896 }
1897
1898 return rc;
1899}
1900
1901static int hotkey_status_get(int *status)
1902{
1903 if (!acpi_evalf(hkey_handle, status, "DHKC", "d"))
1904 return -EIO;
1905
1906 return 0;
1907}
1908
2586d566 1909static int hotkey_status_set(bool enable)
b2c985e7 1910{
2586d566 1911 if (!acpi_evalf(hkey_handle, NULL, "MHKC", "vd", enable ? 1 : 0))
b2c985e7
HMH		 1912 return -EIO;
1913
1914 return 0;
1915}
1916
6c231bd5 1917static void tpacpi_input_send_tabletsw(void)
b3ec6f91 1918{
6c231bd5 1919 int state;
b3ec6f91 1920
6c231bd5
HMH		 1921 if (tp_features.hotkey_tablet &&
1922 !hotkey_get_tablet_mode(&state)) {
1923 mutex_lock(&tpacpi_inputdev_send_mutex);
b3ec6f91 1924
6c231bd5
HMH		 1925 input_report_switch(tpacpi_inputdev,
1926 SW_TABLET_MODE, !!state);
1927 input_sync(tpacpi_inputdev);
1928
1929 mutex_unlock(&tpacpi_inputdev_send_mutex);
1930 }
b3ec6f91
HMH		 1931}
1932
b7c8c200
HMH		 1933static void tpacpi_input_send_key(unsigned int scancode)
1934{
1935 unsigned int keycode;
1936
1937 keycode = hotkey_keycode_map[scancode];
1938
1939 if (keycode != KEY_RESERVED) {
1940 mutex_lock(&tpacpi_inputdev_send_mutex);
1941
1942 input_report_key(tpacpi_inputdev, keycode, 1);
1943 if (keycode == KEY_UNKNOWN)
1944 input_event(tpacpi_inputdev, EV_MSC, MSC_SCAN,
1945 scancode);
1946 input_sync(tpacpi_inputdev);
1947
1948 input_report_key(tpacpi_inputdev, keycode, 0);
1949 if (keycode == KEY_UNKNOWN)
1950 input_event(tpacpi_inputdev, EV_MSC, MSC_SCAN,
1951 scancode);
1952 input_sync(tpacpi_inputdev);
1953
1954 mutex_unlock(&tpacpi_inputdev_send_mutex);
1955 }
1956}
1957
01e88f25
HMH		 1958#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
1959static struct tp_acpi_drv_struct ibm_hotkey_acpidriver;
1960
1961static void tpacpi_hotkey_send_key(unsigned int scancode)
1962{
1963 tpacpi_input_send_key(scancode);
1964 if (hotkey_report_mode < 2) {
1965 acpi_bus_generate_proc_event(ibm_hotkey_acpidriver.device,
1966 0x80, 0x1001 + scancode);
1967 }
1968}
1969
1970static void hotkey_read_nvram(struct tp_nvram_state *n, u32 m)
1971{
1972 u8 d;
1973
1974 if (m & TP_NVRAM_HKEY_GROUP_HK2) {
1975 d = nvram_read_byte(TP_NVRAM_ADDR_HK2);
1976 n->thinkpad_toggle = !!(d & TP_NVRAM_MASK_HKT_THINKPAD);
1977 n->zoom_toggle = !!(d & TP_NVRAM_MASK_HKT_ZOOM);
1978 n->display_toggle = !!(d & TP_NVRAM_MASK_HKT_DISPLAY);
1979 n->hibernate_toggle = !!(d & TP_NVRAM_MASK_HKT_HIBERNATE);
1980 }
1981 if (m & TP_ACPI_HKEY_THNKLGHT_MASK) {
1982 d = nvram_read_byte(TP_NVRAM_ADDR_THINKLIGHT);
1983 n->thinklight_toggle = !!(d & TP_NVRAM_MASK_THINKLIGHT);
1984 }
1985 if (m & TP_ACPI_HKEY_DISPXPAND_MASK) {
1986 d = nvram_read_byte(TP_NVRAM_ADDR_VIDEO);
1987 n->displayexp_toggle =
1988 !!(d & TP_NVRAM_MASK_HKT_DISPEXPND);
1989 }
1990 if (m & TP_NVRAM_HKEY_GROUP_BRIGHTNESS) {
1991 d = nvram_read_byte(TP_NVRAM_ADDR_BRIGHTNESS);
1992 n->brightness_level = (d & TP_NVRAM_MASK_LEVEL_BRIGHTNESS)
1993 >> TP_NVRAM_POS_LEVEL_BRIGHTNESS;
1994 n->brightness_toggle =
1995 !!(d & TP_NVRAM_MASK_HKT_BRIGHTNESS);
1996 }
1997 if (m & TP_NVRAM_HKEY_GROUP_VOLUME) {
1998 d = nvram_read_byte(TP_NVRAM_ADDR_MIXER);
1999 n->volume_level = (d & TP_NVRAM_MASK_LEVEL_VOLUME)
2000 >> TP_NVRAM_POS_LEVEL_VOLUME;
2001 n->mute = !!(d & TP_NVRAM_MASK_MUTE);
2002 n->volume_toggle = !!(d & TP_NVRAM_MASK_HKT_VOLUME);
2003 }
2004}
2005
2006#define TPACPI_COMPARE_KEY(__scancode, __member) \
35ff8b9f
HMH		 2007 do { \
2008 if ((mask & (1 << __scancode)) && \
2009 oldn->__member != newn->__member) \
2010 tpacpi_hotkey_send_key(__scancode); \
2011 } while (0)
01e88f25
HMH		 2012
2013#define TPACPI_MAY_SEND_KEY(__scancode) \
2014 do { if (mask & (1 << __scancode)) \
2015 tpacpi_hotkey_send_key(__scancode); } while (0)
2016
2017static void hotkey_compare_and_issue_event(struct tp_nvram_state *oldn,
35ff8b9f 2018 struct tp_nvram_state *newn,
01e88f25
HMH		 2019 u32 mask)
2020{
2021 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_THINKPAD, thinkpad_toggle);
2022 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNSPACE, zoom_toggle);
2023 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNF7, display_toggle);
2024 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNF12, hibernate_toggle);
2025
2026 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNPAGEUP, thinklight_toggle);
2027
2028 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNF8, displayexp_toggle);
2029
2030 /* handle volume */
2031 if (oldn->volume_toggle != newn->volume_toggle) {
2032 if (oldn->mute != newn->mute) {
2033 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_MUTE);
2034 }
2035 if (oldn->volume_level > newn->volume_level) {
2036 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEDOWN);
2037 } else if (oldn->volume_level < newn->volume_level) {
2038 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEUP);
2039 } else if (oldn->mute == newn->mute) {
2040 /* repeated key presses that didn't change state */
2041 if (newn->mute) {
2042 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_MUTE);
2043 } else if (newn->volume_level != 0) {
2044 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEUP);
2045 } else {
2046 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEDOWN);
2047 }
2048 }
2049 }
2050
2051 /* handle brightness */
2052 if (oldn->brightness_toggle != newn->brightness_toggle) {
2053 if (oldn->brightness_level < newn->brightness_level) {
2054 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNHOME);
2055 } else if (oldn->brightness_level > newn->brightness_level) {
2056 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNEND);
2057 } else {
2058 /* repeated key presses that didn't change state */
2059 if (newn->brightness_level != 0) {
2060 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNHOME);
2061 } else {
2062 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNEND);
2063 }
2064 }
2065 }
2066}
2067
2068#undef TPACPI_COMPARE_KEY
2069#undef TPACPI_MAY_SEND_KEY
2070
2071static int hotkey_kthread(void *data)
2072{
2073 struct tp_nvram_state s[2];
2074 u32 mask;
2075 unsigned int si, so;
2076 unsigned long t;
2077 unsigned int change_detector, must_reset;
2078
2079 mutex_lock(&hotkey_thread_mutex);
2080
2081 if (tpacpi_lifecycle == TPACPI_LIFE_EXITING)
2082 goto exit;
2083
2084 set_freezable();
2085
2086 so = 0;
2087 si = 1;
2088 t = 0;
2089
2090 /* Initial state for compares */
2091 mutex_lock(&hotkey_thread_data_mutex);
2092 change_detector = hotkey_config_change;
2093 mask = hotkey_source_mask & hotkey_mask;
2094 mutex_unlock(&hotkey_thread_data_mutex);
2095 hotkey_read_nvram(&s[so], mask);
2096
2097 while (!kthread_should_stop() && hotkey_poll_freq) {
2098 if (t == 0)
2099 t = 1000/hotkey_poll_freq;
2100 t = msleep_interruptible(t);
2101 if (unlikely(kthread_should_stop()))
2102 break;
2103 must_reset = try_to_freeze();
2104 if (t > 0 && !must_reset)
2105 continue;
2106
2107 mutex_lock(&hotkey_thread_data_mutex);
2108 if (must_reset || hotkey_config_change != change_detector) {
2109 /* forget old state on thaw or config change */
2110 si = so;
2111 t = 0;
2112 change_detector = hotkey_config_change;
2113 }
2114 mask = hotkey_source_mask & hotkey_mask;
2115 mutex_unlock(&hotkey_thread_data_mutex);
2116
2117 if (likely(mask)) {
2118 hotkey_read_nvram(&s[si], mask);
2119 if (likely(si != so)) {
2120 hotkey_compare_and_issue_event(&s[so], &s[si],
35ff8b9f 2121 mask);
01e88f25
HMH		 2122 }
2123 }
2124
2125 so = si;
2126 si ^= 1;
2127 }
2128
2129exit:
2130 mutex_unlock(&hotkey_thread_mutex);
2131 return 0;
2132}
2133
2134static void hotkey_poll_stop_sync(void)
2135{
2136 if (tpacpi_hotkey_task) {
2137 if (frozen(tpacpi_hotkey_task) ||
2138 freezing(tpacpi_hotkey_task))
2139 thaw_process(tpacpi_hotkey_task);
2140
2141 kthread_stop(tpacpi_hotkey_task);
2142 tpacpi_hotkey_task = NULL;
2143 mutex_lock(&hotkey_thread_mutex);
2144 /* at this point, the thread did exit */
2145 mutex_unlock(&hotkey_thread_mutex);
2146 }
2147}
2148
2149/* call with hotkey_mutex held */
2150static void hotkey_poll_setup(int may_warn)
2151{
2152 if ((hotkey_source_mask & hotkey_mask) != 0 &&
2153 hotkey_poll_freq > 0 &&
2154 (tpacpi_inputdev->users > 0 || hotkey_report_mode < 2)) {
2155 if (!tpacpi_hotkey_task) {
2156 tpacpi_hotkey_task = kthread_run(hotkey_kthread,
95e57ab2 2157 NULL, TPACPI_NVRAM_KTHREAD_NAME);
01e88f25
HMH		 2158 if (IS_ERR(tpacpi_hotkey_task)) {
2159 tpacpi_hotkey_task = NULL;
35ff8b9f
HMH		 2160 printk(TPACPI_ERR
2161 "could not create kernel thread "
01e88f25
HMH		 2162 "for hotkey polling\n");
2163 }
2164 }
2165 } else {
2166 hotkey_poll_stop_sync();
2167 if (may_warn &&
2168 hotkey_source_mask != 0 && hotkey_poll_freq == 0) {
35ff8b9f
HMH		 2169 printk(TPACPI_NOTICE
2170 "hot keys 0x%08x require polling, "
01e88f25
HMH		 2171 "which is currently disabled\n",
2172 hotkey_source_mask);
2173 }
2174 }
2175}
2176
2177static void hotkey_poll_setup_safe(int may_warn)
2178{
2179 mutex_lock(&hotkey_mutex);
2180 hotkey_poll_setup(may_warn);
2181 mutex_unlock(&hotkey_mutex);
2182}
2183
1bc6b9cd
HMH		 2184#else /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
2185
2186static void hotkey_poll_setup_safe(int __unused)
2187{
2188}
2189
2190#endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
2191
01e88f25
HMH		 2192static int hotkey_inputdev_open(struct input_dev *dev)
2193{
2194 switch (tpacpi_lifecycle) {
2195 case TPACPI_LIFE_INIT:
2196 /*
2197 * hotkey_init will call hotkey_poll_setup_safe
2198 * at the appropriate moment
2199 */
2200 return 0;
2201 case TPACPI_LIFE_EXITING:
2202 return -EBUSY;
2203 case TPACPI_LIFE_RUNNING:
2204 hotkey_poll_setup_safe(0);
2205 return 0;
2206 }
2207
2208 /* Should only happen if tpacpi_lifecycle is corrupt */
2209 BUG();
2210 return -EBUSY;
2211}
2212
2213static void hotkey_inputdev_close(struct input_dev *dev)
2214{
2215 /* disable hotkey polling when possible */
2216 if (tpacpi_lifecycle == TPACPI_LIFE_RUNNING)
2217 hotkey_poll_setup_safe(0);
2218}
01e88f25 2219
a0416420
HMH		 2220/* sysfs hotkey enable ------------------------------------------------- */
2221static ssize_t hotkey_enable_show(struct device *dev,
2222 struct device_attribute *attr,
2223 char *buf)
2224{
ae92bd17 2225 int res, status;
a0416420 2226
2586d566
HMH		 2227 printk_deprecated_attribute("hotkey_enable",
2228 "Hotkey reporting is always enabled");
2229
b2c985e7 2230 res = hotkey_status_get(&status);
a0416420
HMH		 2231 if (res)
2232 return res;
2233
2234 return snprintf(buf, PAGE_SIZE, "%d\n", status);
2235}
2236
2237static ssize_t hotkey_enable_store(struct device *dev,
2238 struct device_attribute *attr,
2239 const char *buf, size_t count)
2240{
2241 unsigned long t;
2586d566
HMH		 2242
2243 printk_deprecated_attribute("hotkey_enable",
2244 "Hotkeys can be disabled through hotkey_mask");
a0416420
HMH		 2245
2246 if (parse_strtoul(buf, 1, &t))
2247 return -EINVAL;
2248
2586d566
HMH		 2249 if (t == 0)
2250 return -EPERM;
a0416420 2251
2586d566 2252 return count;
a0416420
HMH		 2253}
2254
2255static struct device_attribute dev_attr_hotkey_enable =
cc4c24e1 2256 __ATTR(hotkey_enable, S_IWUSR | S_IRUGO,
a0416420
HMH		 2257 hotkey_enable_show, hotkey_enable_store);
2258
2259/* sysfs hotkey mask --------------------------------------------------- */
2260static ssize_t hotkey_mask_show(struct device *dev,
2261 struct device_attribute *attr,
2262 char *buf)
2263{
b2c985e7 2264 int res;
a0416420 2265
7646ea88 2266 if (mutex_lock_killable(&hotkey_mutex))
b2c985e7
HMH		 2267 return -ERESTARTSYS;
2268 res = hotkey_mask_get();
2269 mutex_unlock(&hotkey_mutex);
a0416420 2270
b2c985e7
HMH		 2271 return (res)?
2272 res : snprintf(buf, PAGE_SIZE, "0x%08x\n", hotkey_mask);
a0416420
HMH		 2273}
2274
2275static ssize_t hotkey_mask_store(struct device *dev,
2276 struct device_attribute *attr,
2277 const char *buf, size_t count)
2278{
2279 unsigned long t;
b2c985e7 2280 int res;
a0416420 2281
ae92bd17 2282 if (parse_strtoul(buf, 0xffffffffUL, &t))
a0416420
HMH		 2283 return -EINVAL;
2284
7646ea88 2285 if (mutex_lock_killable(&hotkey_mutex))
b2c985e7
HMH		 2286 return -ERESTARTSYS;
2287
2288 res = hotkey_mask_set(t);
01e88f25
HMH		 2289
2290#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
2291 hotkey_poll_setup(1);
2292#endif
2293
b2c985e7 2294 mutex_unlock(&hotkey_mutex);
a0416420 2295
56e2c200
HMH		 2296 tpacpi_disclose_usertask("hotkey_mask", "set to 0x%08lx\n", t);
2297
a0416420
HMH		 2298 return (res) ? res : count;
2299}
2300
2301static struct device_attribute dev_attr_hotkey_mask =
cc4c24e1 2302 __ATTR(hotkey_mask, S_IWUSR | S_IRUGO,
a0416420
HMH		 2303 hotkey_mask_show, hotkey_mask_store);
2304
2305/* sysfs hotkey bios_enabled ------------------------------------------- */
2306static ssize_t hotkey_bios_enabled_show(struct device *dev,
2307 struct device_attribute *attr,
2308 char *buf)
2309{
2586d566 2310 return sprintf(buf, "0\n");
a0416420
HMH		 2311}
2312
2313static struct device_attribute dev_attr_hotkey_bios_enabled =
cc4c24e1 2314 __ATTR(hotkey_bios_enabled, S_IRUGO, hotkey_bios_enabled_show, NULL);
a0416420
HMH		 2315
2316/* sysfs hotkey bios_mask ---------------------------------------------- */
2317static ssize_t hotkey_bios_mask_show(struct device *dev,
2318 struct device_attribute *attr,
2319 char *buf)
2320{
ae92bd17 2321 return snprintf(buf, PAGE_SIZE, "0x%08x\n", hotkey_orig_mask);
a0416420
HMH		 2322}
2323
2324static struct device_attribute dev_attr_hotkey_bios_mask =
cc4c24e1 2325 __ATTR(hotkey_bios_mask, S_IRUGO, hotkey_bios_mask_show, NULL);
a0416420 2326
9b010de5
HMH		 2327/* sysfs hotkey all_mask ----------------------------------------------- */
2328static ssize_t hotkey_all_mask_show(struct device *dev,
2329 struct device_attribute *attr,
2330 char *buf)
2331{
01e88f25
HMH		 2332 return snprintf(buf, PAGE_SIZE, "0x%08x\n",
2333 hotkey_all_mask | hotkey_source_mask);
9b010de5
HMH		 2334}
2335
2336static struct device_attribute dev_attr_hotkey_all_mask =
2337 __ATTR(hotkey_all_mask, S_IRUGO, hotkey_all_mask_show, NULL);
2338
2339/* sysfs hotkey recommended_mask --------------------------------------- */
2340static ssize_t hotkey_recommended_mask_show(struct device *dev,
2341 struct device_attribute *attr,
2342 char *buf)
2343{
2344 return snprintf(buf, PAGE_SIZE, "0x%08x\n",
01e88f25
HMH		 2345 (hotkey_all_mask | hotkey_source_mask)
2346 & ~hotkey_reserved_mask);
9b010de5
HMH		 2347}
2348
2349static struct device_attribute dev_attr_hotkey_recommended_mask =
2350 __ATTR(hotkey_recommended_mask, S_IRUGO,
2351 hotkey_recommended_mask_show, NULL);
2352
01e88f25
HMH		 2353#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
2354
2355/* sysfs hotkey hotkey_source_mask ------------------------------------- */
2356static ssize_t hotkey_source_mask_show(struct device *dev,
2357 struct device_attribute *attr,
2358 char *buf)
2359{
2360 return snprintf(buf, PAGE_SIZE, "0x%08x\n", hotkey_source_mask);
2361}
2362
2363static ssize_t hotkey_source_mask_store(struct device *dev,
2364 struct device_attribute *attr,
2365 const char *buf, size_t count)
2366{
2367 unsigned long t;
2368
2369 if (parse_strtoul(buf, 0xffffffffUL, &t) ||
2370 ((t & ~TPACPI_HKEY_NVRAM_KNOWN_MASK) != 0))
2371 return -EINVAL;
2372
7646ea88 2373 if (mutex_lock_killable(&hotkey_mutex))
01e88f25
HMH		 2374 return -ERESTARTSYS;
2375
2376 HOTKEY_CONFIG_CRITICAL_START
2377 hotkey_source_mask = t;
2378 HOTKEY_CONFIG_CRITICAL_END
2379
2380 hotkey_poll_setup(1);
2381
2382 mutex_unlock(&hotkey_mutex);
2383
56e2c200
HMH		 2384 tpacpi_disclose_usertask("hotkey_source_mask", "set to 0x%08lx\n", t);
2385
01e88f25
HMH		 2386 return count;
2387}
2388
2389static struct device_attribute dev_attr_hotkey_source_mask =
2390 __ATTR(hotkey_source_mask, S_IWUSR | S_IRUGO,
2391 hotkey_source_mask_show, hotkey_source_mask_store);
2392
2393/* sysfs hotkey hotkey_poll_freq --------------------------------------- */
2394static ssize_t hotkey_poll_freq_show(struct device *dev,
2395 struct device_attribute *attr,
2396 char *buf)
2397{
2398 return snprintf(buf, PAGE_SIZE, "%d\n", hotkey_poll_freq);
2399}
2400
2401static ssize_t hotkey_poll_freq_store(struct device *dev,
2402 struct device_attribute *attr,
2403 const char *buf, size_t count)
2404{
2405 unsigned long t;
2406
2407 if (parse_strtoul(buf, 25, &t))
2408 return -EINVAL;
2409
7646ea88 2410 if (mutex_lock_killable(&hotkey_mutex))
01e88f25
HMH		 2411 return -ERESTARTSYS;
2412
2413 hotkey_poll_freq = t;
2414
2415 hotkey_poll_setup(1);
2416 mutex_unlock(&hotkey_mutex);
2417
56e2c200
HMH		 2418 tpacpi_disclose_usertask("hotkey_poll_freq", "set to %lu\n", t);
2419
01e88f25
HMH		 2420 return count;
2421}
2422
2423static struct device_attribute dev_attr_hotkey_poll_freq =
2424 __ATTR(hotkey_poll_freq, S_IWUSR | S_IRUGO,
2425 hotkey_poll_freq_show, hotkey_poll_freq_store);
2426
2427#endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
2428
50ebec09 2429/* sysfs hotkey radio_sw (pollable) ------------------------------------ */
74941a69
HMH		 2430static ssize_t hotkey_radio_sw_show(struct device *dev,
2431 struct device_attribute *attr,
2432 char *buf)
2433{
19d337df
JB		 2434 int res;
2435 res = hotkey_get_wlsw();
74941a69
HMH		 2436 if (res < 0)
2437 return res;
2438
19d337df
JB		 2439 /* Opportunistic update */
2440 tpacpi_rfk_update_hwblock_state((res == TPACPI_RFK_RADIO_OFF));
2441
2442 return snprintf(buf, PAGE_SIZE, "%d\n",
2443 (res == TPACPI_RFK_RADIO_OFF) ? 0 : 1);
74941a69
HMH		 2444}
2445
2446static struct device_attribute dev_attr_hotkey_radio_sw =
2447 __ATTR(hotkey_radio_sw, S_IRUGO, hotkey_radio_sw_show, NULL);
2448
50ebec09
HMH		 2449static void hotkey_radio_sw_notify_change(void)
2450{
2451 if (tp_features.hotkey_wlsw)
2452 sysfs_notify(&tpacpi_pdev->dev.kobj, NULL,
2453 "hotkey_radio_sw");
2454}
2455
6c231bd5
HMH		 2456/* sysfs hotkey tablet mode (pollable) --------------------------------- */
2457static ssize_t hotkey_tablet_mode_show(struct device *dev,
2458 struct device_attribute *attr,
2459 char *buf)
2460{
2461 int res, s;
2462 res = hotkey_get_tablet_mode(&s);
2463 if (res < 0)
2464 return res;
2465
2466 return snprintf(buf, PAGE_SIZE, "%d\n", !!s);
2467}
2468
2469static struct device_attribute dev_attr_hotkey_tablet_mode =
2470 __ATTR(hotkey_tablet_mode, S_IRUGO, hotkey_tablet_mode_show, NULL);
2471
2472static void hotkey_tablet_mode_notify_change(void)
2473{
2474 if (tp_features.hotkey_tablet)
2475 sysfs_notify(&tpacpi_pdev->dev.kobj, NULL,
2476 "hotkey_tablet_mode");
2477}
2478
ff80f137
HMH		 2479/* sysfs hotkey report_mode -------------------------------------------- */
2480static ssize_t hotkey_report_mode_show(struct device *dev,
2481 struct device_attribute *attr,
2482 char *buf)
2483{
2484 return snprintf(buf, PAGE_SIZE, "%d\n",
2485 (hotkey_report_mode != 0) ? hotkey_report_mode : 1);
2486}
2487
2488static struct device_attribute dev_attr_hotkey_report_mode =
2489 __ATTR(hotkey_report_mode, S_IRUGO, hotkey_report_mode_show, NULL);
2490
50ebec09 2491/* sysfs wakeup reason (pollable) -------------------------------------- */
a713b4d7
HMH		 2492static ssize_t hotkey_wakeup_reason_show(struct device *dev,
2493 struct device_attribute *attr,
2494 char *buf)
2495{
2496 return snprintf(buf, PAGE_SIZE, "%d\n", hotkey_wakeup_reason);
2497}
2498
2499static struct device_attribute dev_attr_hotkey_wakeup_reason =
2500 __ATTR(wakeup_reason, S_IRUGO, hotkey_wakeup_reason_show, NULL);
2501
1d5a2b54 2502static void hotkey_wakeup_reason_notify_change(void)
50ebec09
HMH		 2503{
2504 if (tp_features.hotkey_mask)
2505 sysfs_notify(&tpacpi_pdev->dev.kobj, NULL,
2506 "wakeup_reason");
2507}
2508
2509/* sysfs wakeup hotunplug_complete (pollable) -------------------------- */
a713b4d7
HMH		 2510static ssize_t hotkey_wakeup_hotunplug_complete_show(struct device *dev,
2511 struct device_attribute *attr,
2512 char *buf)
2513{
2514 return snprintf(buf, PAGE_SIZE, "%d\n", hotkey_autosleep_ack);
2515}
2516
2517static struct device_attribute dev_attr_hotkey_wakeup_hotunplug_complete =
2518 __ATTR(wakeup_hotunplug_complete, S_IRUGO,
2519 hotkey_wakeup_hotunplug_complete_show, NULL);
2520
1d5a2b54 2521static void hotkey_wakeup_hotunplug_complete_notify_change(void)
50ebec09
HMH		 2522{
2523 if (tp_features.hotkey_mask)
2524 sysfs_notify(&tpacpi_pdev->dev.kobj, NULL,
2525 "wakeup_hotunplug_complete");
2526}
2527
a0416420
HMH		 2528/* --------------------------------------------------------------------- */
2529
ff80f137
HMH		 2530static struct attribute *hotkey_attributes[] __initdata = {
2531 &dev_attr_hotkey_enable.attr,
01e88f25 2532 &dev_attr_hotkey_bios_enabled.attr,
ff80f137 2533 &dev_attr_hotkey_report_mode.attr,
01e88f25
HMH		 2534#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
2535 &dev_attr_hotkey_mask.attr,
2536 &dev_attr_hotkey_all_mask.attr,
2537 &dev_attr_hotkey_recommended_mask.attr,
2538 &dev_attr_hotkey_source_mask.attr,
2539 &dev_attr_hotkey_poll_freq.attr,
2540#endif
ff80f137
HMH		 2541};
2542
2543static struct attribute *hotkey_mask_attributes[] __initdata = {
a0416420 2544 &dev_attr_hotkey_bios_mask.attr,
01e88f25
HMH		 2545#ifndef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
2546 &dev_attr_hotkey_mask.attr,
9b010de5
HMH		 2547 &dev_attr_hotkey_all_mask.attr,
2548 &dev_attr_hotkey_recommended_mask.attr,
01e88f25 2549#endif
a713b4d7
HMH		 2550 &dev_attr_hotkey_wakeup_reason.attr,
2551 &dev_attr_hotkey_wakeup_hotunplug_complete.attr,
a0416420
HMH		 2552};
2553
19d337df
JB		 2554/*
2555 * Sync both the hw and sw blocking state of all switches
2556 */
733e27c1
HMH		 2557static void tpacpi_send_radiosw_update(void)
2558{
2559 int wlsw;
2560
19d337df
JB		 2561 /*
2562 * We must sync all rfkill controllers *before* issuing any
2563 * rfkill input events, or we will race the rfkill core input
2564 * handler.
2565 *
2566 * tpacpi_inputdev_send_mutex works as a syncronization point
2567 * for the above.
2568 *
2569 * We optimize to avoid numerous calls to hotkey_get_wlsw.
2570 */
2571
2572 wlsw = hotkey_get_wlsw();
2573
2574 /* Sync hw blocking state first if it is hw-blocked */
2575 if (wlsw == TPACPI_RFK_RADIO_OFF)
2576 tpacpi_rfk_update_hwblock_state(true);
0e74dc26 2577
19d337df
JB		 2578 /* Sync sw blocking state */
2579 tpacpi_rfk_update_swstate_all();
2580
2581 /* Sync hw blocking state last if it is hw-unblocked */
2582 if (wlsw == TPACPI_RFK_RADIO_ON)
2583 tpacpi_rfk_update_hwblock_state(false);
2584
2585 /* Issue rfkill input event for WLSW switch */
2586 if (!(wlsw < 0)) {
733e27c1
HMH		 2587 mutex_lock(&tpacpi_inputdev_send_mutex);
2588
2589 input_report_switch(tpacpi_inputdev,
19d337df 2590 SW_RFKILL_ALL, (wlsw > 0));
733e27c1
HMH		 2591 input_sync(tpacpi_inputdev);
2592
2593 mutex_unlock(&tpacpi_inputdev_send_mutex);
2594 }
19d337df
JB		 2595
2596 /*
2597 * this can be unconditional, as we will poll state again
2598 * if userspace uses the notify to read data
2599 */
733e27c1
HMH		 2600 hotkey_radio_sw_notify_change();
2601}
2602
9c0a76e1
HMH		 2603static void hotkey_exit(void)
2604{
2605#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
2606 hotkey_poll_stop_sync();
2607#endif
2608
2609 if (hotkey_dev_attributes)
2610 delete_attr_set(hotkey_dev_attributes, &tpacpi_pdev->dev.kobj);
2611
2612 kfree(hotkey_keycode_map);
2613
2614 if (tp_features.hotkey) {
56e2c200 2615 dbg_printk(TPACPI_DBG_EXIT | TPACPI_DBG_HKEY,
9c0a76e1
HMH		 2616 "restoring original hot key mask\n");
2617 /* no short-circuit boolean operator below! */
2618 if ((hotkey_mask_set(hotkey_orig_mask) |
2586d566 2619 hotkey_status_set(false)) != 0)
9c0a76e1
HMH		 2620 printk(TPACPI_ERR
2621 "failed to restore hot key mask "
2622 "to BIOS defaults\n");
2623 }
2624}
2625
a5763f22 2626static int __init hotkey_init(struct ibm_init_struct *iibm)
56b6aeb0 2627{
0f089147
HMH		 2628 /* Requirements for changing the default keymaps:
2629 *
2630 * 1. Many of the keys are mapped to KEY_RESERVED for very
2631 * good reasons. Do not change them unless you have deep
2632 * knowledge on the IBM and Lenovo ThinkPad firmware for
2633 * the various ThinkPad models. The driver behaves
2634 * differently for KEY_RESERVED: such keys have their
2635 * hot key mask *unset* in mask_recommended, and also
2636 * in the initial hot key mask programmed into the
2637 * firmware at driver load time, which means the firm-
2638 * ware may react very differently if you change them to
2639 * something else;
2640 *
2641 * 2. You must be subscribed to the linux-thinkpad and
2642 * ibm-acpi-devel mailing lists, and you should read the
2643 * list archives since 2007 if you want to change the
2644 * keymaps. This requirement exists so that you will
2645 * know the past history of problems with the thinkpad-
2646 * acpi driver keymaps, and also that you will be
2647 * listening to any bug reports;
2648 *
2649 * 3. Do not send thinkpad-acpi specific patches directly to
2650 * for merging, *ever*. Send them to the linux-acpi
2651 * mailinglist for comments. Merging is to be done only
2652 * through acpi-test and the ACPI maintainer.
2653 *
2654 * If the above is too much to ask, don't change the keymap.
2655 * Ask the thinkpad-acpi maintainer to do it, instead.
2656 */
edf0e0e5
HMH		 2657 static u16 ibm_keycode_map[] __initdata = {
2658 /* Scan Codes 0x00 to 0x0B: ACPI HKEY FN+F1..F12 */
2659 KEY_FN_F1, KEY_FN_F2, KEY_COFFEE, KEY_SLEEP,
2660 KEY_WLAN, KEY_FN_F6, KEY_SWITCHVIDEOMODE, KEY_FN_F8,
2661 KEY_FN_F9, KEY_FN_F10, KEY_FN_F11, KEY_SUSPEND,
0f089147
HMH		 2662
2663 /* Scan codes 0x0C to 0x1F: Other ACPI HKEY hot keys */
edf0e0e5
HMH		 2664 KEY_UNKNOWN, /* 0x0C: FN+BACKSPACE */
2665 KEY_UNKNOWN, /* 0x0D: FN+INSERT */
2666 KEY_UNKNOWN, /* 0x0E: FN+DELETE */
0f089147
HMH		 2667
2668 /* brightness: firmware always reacts to them, unless
2669 * X.org did some tricks in the radeon BIOS scratch
2670 * registers of *some* models */
e927c08d 2671 KEY_RESERVED, /* 0x0F: FN+HOME (brightness up) */
e927c08d 2672 KEY_RESERVED, /* 0x10: FN+END (brightness down) */
0f089147
HMH		 2673
2674 /* Thinklight: firmware always react to it */
edf0e0e5 2675 KEY_RESERVED, /* 0x11: FN+PGUP (thinklight toggle) */
0f089147 2676
edf0e0e5
HMH		 2677 KEY_UNKNOWN, /* 0x12: FN+PGDOWN */
2678 KEY_ZOOM, /* 0x13: FN+SPACE (zoom) */
0f089147
HMH		 2679
2680 /* Volume: firmware always react to it and reprograms
2681 * the built-in *extra* mixer. Never map it to control
2682 * another mixer by default. */
e927c08d
HMH		 2683 KEY_RESERVED, /* 0x14: VOLUME UP */
2684 KEY_RESERVED, /* 0x15: VOLUME DOWN */
2685 KEY_RESERVED, /* 0x16: MUTE */
0f089147 2686
edf0e0e5 2687 KEY_VENDOR, /* 0x17: Thinkpad/AccessIBM/Lenovo */
0f089147 2688
edf0e0e5
HMH		 2689 /* (assignments unknown, please report if found) */
2690 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN,
2691 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN,
2692 };
2693 static u16 lenovo_keycode_map[] __initdata = {
2694 /* Scan Codes 0x00 to 0x0B: ACPI HKEY FN+F1..F12 */
2695 KEY_FN_F1, KEY_COFFEE, KEY_BATTERY, KEY_SLEEP,
2696 KEY_WLAN, KEY_FN_F6, KEY_SWITCHVIDEOMODE, KEY_FN_F8,
2697 KEY_FN_F9, KEY_FN_F10, KEY_FN_F11, KEY_SUSPEND,
0f089147
HMH		 2698
2699 /* Scan codes 0x0C to 0x1F: Other ACPI HKEY hot keys */
edf0e0e5
HMH		 2700 KEY_UNKNOWN, /* 0x0C: FN+BACKSPACE */
2701 KEY_UNKNOWN, /* 0x0D: FN+INSERT */
2702 KEY_UNKNOWN, /* 0x0E: FN+DELETE */
0f089147 2703
b5972796
HMH		 2704 /* These either have to go through ACPI video, or
2705 * act like in the IBM ThinkPads, so don't ever
2706 * enable them by default */
56a185b4 2707 KEY_RESERVED, /* 0x0F: FN+HOME (brightness up) */
56a185b4 2708 KEY_RESERVED, /* 0x10: FN+END (brightness down) */
0f089147 2709
edf0e0e5 2710 KEY_RESERVED, /* 0x11: FN+PGUP (thinklight toggle) */
0f089147 2711
edf0e0e5
HMH		 2712 KEY_UNKNOWN, /* 0x12: FN+PGDOWN */
2713 KEY_ZOOM, /* 0x13: FN+SPACE (zoom) */
0f089147
HMH		 2714
2715 /* Volume: z60/z61, T60 (BIOS version?): firmware always
2716 * react to it and reprograms the built-in *extra* mixer.
2717 * Never map it to control another mixer by default.
2718 *
2719 * T60?, T61, R60?, R61: firmware and EC tries to send
2720 * these over the regular keyboard, so these are no-ops,
2721 * but there are still weird bugs re. MUTE, so do not
2722 * change unless you get test reports from all Lenovo
2723 * models. May cause the BIOS to interfere with the
2724 * HDA mixer.
2725 */
e927c08d
HMH		 2726 KEY_RESERVED, /* 0x14: VOLUME UP */
2727 KEY_RESERVED, /* 0x15: VOLUME DOWN */
2728 KEY_RESERVED, /* 0x16: MUTE */
0f089147 2729
edf0e0e5 2730 KEY_VENDOR, /* 0x17: Thinkpad/AccessIBM/Lenovo */
0f089147 2731
edf0e0e5
HMH		 2732 /* (assignments unknown, please report if found) */
2733 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN,
2734 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN,
2735 };
2736
2737#define TPACPI_HOTKEY_MAP_LEN ARRAY_SIZE(ibm_keycode_map)
2738#define TPACPI_HOTKEY_MAP_SIZE sizeof(ibm_keycode_map)
2739#define TPACPI_HOTKEY_MAP_TYPESIZE sizeof(ibm_keycode_map[0])
2740
6a38abbf 2741 int res, i;
74941a69 2742 int status;
1b6521dc 2743 int hkeyv;
b86c4722 2744
56e2c200
HMH		 2745 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY,
2746 "initializing hotkey subdriver\n");
fe08bc4b 2747
6a38abbf 2748 BUG_ON(!tpacpi_inputdev);
01e88f25
HMH		 2749 BUG_ON(tpacpi_inputdev->open != NULL ||
2750 tpacpi_inputdev->close != NULL);
6a38abbf 2751
e0c7dfe7 2752 TPACPI_ACPIHANDLE_INIT(hkey);
40ca9fdf 2753 mutex_init(&hotkey_mutex);
5fba344c 2754
01e88f25
HMH		 2755#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
2756 mutex_init(&hotkey_thread_mutex);
2757 mutex_init(&hotkey_thread_data_mutex);
2758#endif
2759
56b6aeb0 2760 /* hotkey not supported on 570 */
d8fd94d9 2761 tp_features.hotkey = hkey_handle != NULL;
56b6aeb0 2762
56e2c200
HMH		 2763 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY,
2764 "hotkeys are %s\n",
d8fd94d9 2765 str_supported(tp_features.hotkey));
fe08bc4b 2766
9c0a76e1
HMH		 2767 if (!tp_features.hotkey)
2768 return 1;
a0416420 2769
d64c81c4
HMH		 2770 tpacpi_disable_brightness_delay();
2771
9c0a76e1
HMH		 2772 hotkey_dev_attributes = create_attr_set(13, NULL);
2773 if (!hotkey_dev_attributes)
2774 return -ENOMEM;
2775 res = add_many_to_attr_set(hotkey_dev_attributes,
2776 hotkey_attributes,
2777 ARRAY_SIZE(hotkey_attributes));
2778 if (res)
2779 goto err_exit;
2780
2781 /* mask not supported on 570, 600e/x, 770e, 770x, A21e, A2xm/p,
2782 A30, R30, R31, T20-22, X20-21, X22-24. Detected by checking
2783 for HKEY interface version 0x100 */
2784 if (acpi_evalf(hkey_handle, &hkeyv, "MHKV", "qd")) {
2785 if ((hkeyv >> 8) != 1) {
2786 printk(TPACPI_ERR "unknown version of the "
2787 "HKEY interface: 0x%x\n", hkeyv);
2788 printk(TPACPI_ERR "please report this to %s\n",
2789 TPACPI_MAIL);
2790 } else {
2791 /*
2792 * MHKV 0x100 in A31, R40, R40e,
2793 * T4x, X31, and later
2794 */
2795 tp_features.hotkey_mask = 1;
56e2c200
HMH		 2796 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY,
2797 "firmware HKEY interface version: 0x%x\n",
2798 hkeyv);
1b6521dc 2799 }
9c0a76e1 2800 }
56b6aeb0 2801
56e2c200
HMH		 2802 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY,
2803 "hotkey masks are %s\n",
9c0a76e1 2804 str_supported(tp_features.hotkey_mask));
fe08bc4b 2805
9c0a76e1
HMH		 2806 if (tp_features.hotkey_mask) {
2807 if (!acpi_evalf(hkey_handle, &hotkey_all_mask,
2808 "MHKA", "qd")) {
2809 printk(TPACPI_ERR
2810 "missing MHKA handler, "
2811 "please report this to %s\n",
2812 TPACPI_MAIL);
2813 /* FN+F12, FN+F4, FN+F3 */
2814 hotkey_all_mask = 0x080cU;
9b010de5 2815 }
9c0a76e1 2816 }
9b010de5 2817
9c0a76e1
HMH		 2818 /* hotkey_source_mask *must* be zero for
2819 * the first hotkey_mask_get */
9c0a76e1
HMH		 2820 if (tp_features.hotkey_mask) {
2821 res = hotkey_mask_get();
2822 if (res)
2823 goto err_exit;
2824
2825 hotkey_orig_mask = hotkey_mask;
2826 res = add_many_to_attr_set(
2827 hotkey_dev_attributes,
2828 hotkey_mask_attributes,
2829 ARRAY_SIZE(hotkey_mask_attributes));
2830 if (res)
2831 goto err_exit;
2832 }
74941a69 2833
01e88f25 2834#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
9c0a76e1
HMH		 2835 if (tp_features.hotkey_mask) {
2836 hotkey_source_mask = TPACPI_HKEY_NVRAM_GOOD_MASK
2837 & ~hotkey_all_mask;
2838 } else {
2839 hotkey_source_mask = TPACPI_HKEY_NVRAM_GOOD_MASK;
2840 }
01e88f25 2841
56e2c200 2842 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY,
9c0a76e1
HMH		 2843 "hotkey source mask 0x%08x, polling freq %d\n",
2844 hotkey_source_mask, hotkey_poll_freq);
01e88f25
HMH		 2845#endif
2846
a73f3091
HMH		 2847#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
2848 if (dbg_wlswemul) {
2849 tp_features.hotkey_wlsw = 1;
2850 printk(TPACPI_INFO
2851 "radio switch emulation enabled\n");
2852 } else
2853#endif
9c0a76e1
HMH		 2854 /* Not all thinkpads have a hardware radio switch */
2855 if (acpi_evalf(hkey_handle, &status, "WLSW", "qd")) {
2856 tp_features.hotkey_wlsw = 1;
2857 printk(TPACPI_INFO
2858 "radio switch found; radios are %s\n",
2859 enabled(status, 0));
3a872080
HMH		 2860 }
2861 if (tp_features.hotkey_wlsw)
9c0a76e1
HMH		 2862 res = add_to_attr_set(hotkey_dev_attributes,
2863 &dev_attr_hotkey_radio_sw.attr);
74941a69 2864
9c0a76e1
HMH		 2865 /* For X41t, X60t, X61t Tablets... */
2866 if (!res && acpi_evalf(hkey_handle, &status, "MHKG", "qd")) {
2867 tp_features.hotkey_tablet = 1;
2868 printk(TPACPI_INFO
2869 "possible tablet mode switch found; "
2870 "ThinkPad in %s mode\n",
2871 (status & TP_HOTKEY_TABLET_MASK)?
2872 "tablet" : "laptop");
2873 res = add_to_attr_set(hotkey_dev_attributes,
2874 &dev_attr_hotkey_tablet_mode.attr);
2875 }
6c231bd5 2876
9c0a76e1
HMH		 2877 if (!res)
2878 res = register_attr_set_with_sysfs(
2879 hotkey_dev_attributes,
2880 &tpacpi_pdev->dev.kobj);
2881 if (res)
2882 goto err_exit;
6a38abbf 2883
9c0a76e1 2884 /* Set up key map */
edf0e0e5 2885
9c0a76e1
HMH		 2886 hotkey_keycode_map = kmalloc(TPACPI_HOTKEY_MAP_SIZE,
2887 GFP_KERNEL);
2888 if (!hotkey_keycode_map) {
2889 printk(TPACPI_ERR
2890 "failed to allocate memory for key map\n");
2891 res = -ENOMEM;
2892 goto err_exit;
2893 }
edf0e0e5 2894
9c0a76e1 2895 if (thinkpad_id.vendor == PCI_VENDOR_ID_LENOVO) {
56e2c200 2896 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY,
9c0a76e1
HMH		 2897 "using Lenovo default hot key map\n");
2898 memcpy(hotkey_keycode_map, &lenovo_keycode_map,
2899 TPACPI_HOTKEY_MAP_SIZE);
2900 } else {
56e2c200 2901 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY,
9c0a76e1
HMH		 2902 "using IBM default hot key map\n");
2903 memcpy(hotkey_keycode_map, &ibm_keycode_map,
2904 TPACPI_HOTKEY_MAP_SIZE);
2905 }
edf0e0e5 2906
9c0a76e1
HMH		 2907 set_bit(EV_KEY, tpacpi_inputdev->evbit);
2908 set_bit(EV_MSC, tpacpi_inputdev->evbit);
2909 set_bit(MSC_SCAN, tpacpi_inputdev->mscbit);
2910 tpacpi_inputdev->keycodesize = TPACPI_HOTKEY_MAP_TYPESIZE;
2911 tpacpi_inputdev->keycodemax = TPACPI_HOTKEY_MAP_LEN;
2912 tpacpi_inputdev->keycode = hotkey_keycode_map;
2913 for (i = 0; i < TPACPI_HOTKEY_MAP_LEN; i++) {
2914 if (hotkey_keycode_map[i] != KEY_RESERVED) {
2915 set_bit(hotkey_keycode_map[i],
2916 tpacpi_inputdev->keybit);
2917 } else {
2918 if (i < sizeof(hotkey_reserved_mask)*8)
2919 hotkey_reserved_mask |= 1 << i;
6a38abbf 2920 }
9c0a76e1 2921 }
6a38abbf 2922
9c0a76e1
HMH		 2923 if (tp_features.hotkey_wlsw) {
2924 set_bit(EV_SW, tpacpi_inputdev->evbit);
2925 set_bit(SW_RFKILL_ALL, tpacpi_inputdev->swbit);
2926 }
2927 if (tp_features.hotkey_tablet) {
2928 set_bit(EV_SW, tpacpi_inputdev->evbit);
2929 set_bit(SW_TABLET_MODE, tpacpi_inputdev->swbit);
2930 }
5c29d58f 2931
9c0a76e1
HMH		 2932 /* Do not issue duplicate brightness change events to
2933 * userspace */
2934 if (!tp_features.bright_acpimode)
2935 /* update bright_acpimode... */
2936 tpacpi_check_std_acpi_brightness_support();
b5972796 2937
8bf3d4c5 2938 if (tp_features.bright_acpimode && acpi_video_backlight_support()) {
9c0a76e1
HMH		 2939 printk(TPACPI_INFO
2940 "This ThinkPad has standard ACPI backlight "
2941 "brightness control, supported by the ACPI "
2942 "video driver\n");
2943 printk(TPACPI_NOTICE
2944 "Disabling thinkpad-acpi brightness events "
2945 "by default...\n");
2946
2947 /* The hotkey_reserved_mask change below is not
2948 * necessary while the keys are at KEY_RESERVED in the
2949 * default map, but better safe than sorry, leave it
2950 * here as a marker of what we have to do, especially
2951 * when we finally become able to set this at runtime
2952 * on response to X.org requests */
2953 hotkey_reserved_mask |=
2954 (1 << TP_ACPI_HOTKEYSCAN_FNHOME)
2955 | (1 << TP_ACPI_HOTKEYSCAN_FNEND);
2956 }
ff80f137 2957
56e2c200
HMH		 2958 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY,
2959 "enabling firmware HKEY event interface...\n");
2586d566 2960 res = hotkey_status_set(true);
9c0a76e1
HMH		 2961 if (res) {
2962 hotkey_exit();
2963 return res;
2964 }
2965 res = hotkey_mask_set(((hotkey_all_mask | hotkey_source_mask)
2966 & ~hotkey_reserved_mask)
2967 | hotkey_orig_mask);
2968 if (res < 0 && res != -ENXIO) {
2969 hotkey_exit();
2970 return res;
2971 }
01e88f25 2972
56e2c200
HMH		 2973 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY,
2974 "legacy ibm/hotkey event reporting over procfs %s\n",
9c0a76e1
HMH		 2975 (hotkey_report_mode < 2) ?
2976 "enabled" : "disabled");
01e88f25 2977
9c0a76e1
HMH		 2978 tpacpi_inputdev->open = &hotkey_inputdev_open;
2979 tpacpi_inputdev->close = &hotkey_inputdev_close;
56b6aeb0 2980
9c0a76e1 2981 hotkey_poll_setup_safe(1);
733e27c1 2982 tpacpi_send_radiosw_update();
9c0a76e1 2983 tpacpi_input_send_tabletsw();
56b6aeb0 2984
9c0a76e1 2985 return 0;
01e88f25 2986
9c0a76e1
HMH		 2987err_exit:
2988 delete_attr_set(hotkey_dev_attributes, &tpacpi_pdev->dev.kobj);
2989 hotkey_dev_attributes = NULL;
a0416420 2990
9c0a76e1 2991 return (res < 0)? res : 1;
56b6aeb0
HMH		 2992}
2993
3827e7a3
HMH		 2994static bool hotkey_notify_hotkey(const u32 hkey,
2995 bool *send_acpi_ev,
2996 bool *ignore_acpi_ev)
2997{
2998 /* 0x1000-0x1FFF: key presses */
2999 unsigned int scancode = hkey & 0xfff;
3000 *send_acpi_ev = true;
3001 *ignore_acpi_ev = false;
3002
3003 if (scancode > 0 && scancode < 0x21) {
3004 scancode--;
3005 if (!(hotkey_source_mask & (1 << scancode))) {
3006 tpacpi_input_send_key(scancode);
3007 *send_acpi_ev = false;
3008 } else {
3009 *ignore_acpi_ev = true;
3010 }
3011 return true;
3012 }
3013 return false;
3014}
3015
3016static bool hotkey_notify_wakeup(const u32 hkey,
3017 bool *send_acpi_ev,
3018 bool *ignore_acpi_ev)
3019{
3020 /* 0x2000-0x2FFF: Wakeup reason */
3021 *send_acpi_ev = true;
3022 *ignore_acpi_ev = false;
3023
3024 switch (hkey) {
3025 case 0x2304: /* suspend, undock */
3026 case 0x2404: /* hibernation, undock */
3027 hotkey_wakeup_reason = TP_ACPI_WAKEUP_UNDOCK;
3028 *ignore_acpi_ev = true;
3029 break;
3030
3031 case 0x2305: /* suspend, bay eject */
3032 case 0x2405: /* hibernation, bay eject */
3033 hotkey_wakeup_reason = TP_ACPI_WAKEUP_BAYEJ;
3034 *ignore_acpi_ev = true;
3035 break;
3036
106b4e66
HMH		 3037 case 0x2313: /* Battery on critical low level (S3) */
3038 case 0x2413: /* Battery on critical low level (S4) */
3039 printk(TPACPI_ALERT
3040 "EMERGENCY WAKEUP: battery almost empty\n");
3041 /* how to auto-heal: */
3042 /* 2313: woke up from S3, go to S4/S5 */
3043 /* 2413: woke up from S4, go to S5 */
3044 break;
3045
3827e7a3
HMH		 3046 default:
3047 return false;
3048 }
3049
3050 if (hotkey_wakeup_reason != TP_ACPI_WAKEUP_NONE) {
3051 printk(TPACPI_INFO
3052 "woke up due to a hot-unplug "
3053 "request...\n");
3054 hotkey_wakeup_reason_notify_change();
3055 }
3056 return true;
3057}
3058
3059static bool hotkey_notify_usrevent(const u32 hkey,
3060 bool *send_acpi_ev,
3061 bool *ignore_acpi_ev)
3062{
3063 /* 0x5000-0x5FFF: human interface helpers */
3064 *send_acpi_ev = true;
3065 *ignore_acpi_ev = false;
3066
3067 switch (hkey) {
3068 case 0x5010: /* Lenovo new BIOS: brightness changed */
3069 case 0x500b: /* X61t: tablet pen inserted into bay */
3070 case 0x500c: /* X61t: tablet pen removed from bay */
3071 return true;
3072
3073 case 0x5009: /* X41t-X61t: swivel up (tablet mode) */
3074 case 0x500a: /* X41t-X61t: swivel down (normal mode) */
3075 tpacpi_input_send_tabletsw();
3076 hotkey_tablet_mode_notify_change();
3077 *send_acpi_ev = false;
3078 return true;
3079
3080 case 0x5001:
3081 case 0x5002:
3082 /* LID switch events. Do not propagate */
3083 *ignore_acpi_ev = true;
3084 return true;
3085
3086 default:
3087 return false;
3088 }
3089}
3090
106b4e66
HMH		 3091static bool hotkey_notify_thermal(const u32 hkey,
3092 bool *send_acpi_ev,
3093 bool *ignore_acpi_ev)
3094{
3095 /* 0x6000-0x6FFF: thermal alarms */
3096 *send_acpi_ev = true;
3097 *ignore_acpi_ev = false;
3098
3099 switch (hkey) {
3100 case 0x6011:
3101 printk(TPACPI_CRIT
3102 "THERMAL ALARM: battery is too hot!\n");
3103 /* recommended action: warn user through gui */
3104 return true;
3105 case 0x6012:
3106 printk(TPACPI_ALERT
3107 "THERMAL EMERGENCY: battery is extremely hot!\n");
3108 /* recommended action: immediate sleep/hibernate */
3109 return true;
3110 case 0x6021:
3111 printk(TPACPI_CRIT
3112 "THERMAL ALARM: "
3113 "a sensor reports something is too hot!\n");
3114 /* recommended action: warn user through gui, that */
3115 /* some internal component is too hot */
3116 return true;
3117 case 0x6022:
3118 printk(TPACPI_ALERT
3119 "THERMAL EMERGENCY: "
3120 "a sensor reports something is extremely hot!\n");
3121 /* recommended action: immediate sleep/hibernate */
3122 return true;
54926ce8
HMH		 3123 case 0x6030:
3124 printk(TPACPI_INFO
3125 "EC reports that Thermal Table has changed\n");
3126 /* recommended action: do nothing, we don't have
3127 * Lenovo ATM information */
3128 return true;
106b4e66
HMH		 3129 default:
3130 printk(TPACPI_ALERT
3131 "THERMAL ALERT: unknown thermal alarm received\n");
3132 return false;
3133 }
3134}
3135
56b6aeb0
HMH		 3136static void hotkey_notify(struct ibm_struct *ibm, u32 event)
3137{
6a38abbf 3138 u32 hkey;
3827e7a3
HMH		 3139 bool send_acpi_ev;
3140 bool ignore_acpi_ev;
3141 bool known_ev;
3eea123d
HMH		 3142
3143 if (event != 0x80) {
35ff8b9f
HMH		 3144 printk(TPACPI_ERR
3145 "unknown HKEY notification event %d\n", event);
3eea123d 3146 /* forward it to userspace, maybe it knows how to handle it */
35ff8b9f
HMH		 3147 acpi_bus_generate_netlink_event(
3148 ibm->acpi->device->pnp.device_class,
e0b36fc5 3149 dev_name(&ibm->acpi->device->dev),
35ff8b9f 3150 event, 0);
3eea123d
HMH		 3151 return;
3152 }
3153
3154 while (1) {
3155 if (!acpi_evalf(hkey_handle, &hkey, "MHKP", "d")) {
e0c7dfe7 3156 printk(TPACPI_ERR "failed to retrieve HKEY event\n");
3eea123d
HMH		 3157 return;
3158 }
3159
3160 if (hkey == 0) {
3161 /* queue empty */
3162 return;
3163 }
3164
3827e7a3
HMH		 3165 send_acpi_ev = true;
3166 ignore_acpi_ev = false;
56b6aeb0 3167
ff80f137
HMH		 3168 switch (hkey >> 12) {
3169 case 1:
3170 /* 0x1000-0x1FFF: key presses */
3827e7a3
HMH		 3171 known_ev = hotkey_notify_hotkey(hkey, &send_acpi_ev,
3172 &ignore_acpi_ev);
ff80f137 3173 break;
a713b4d7 3174 case 2:
3827e7a3
HMH		 3175 /* 0x2000-0x2FFF: Wakeup reason */
3176 known_ev = hotkey_notify_wakeup(hkey, &send_acpi_ev,
3177 &ignore_acpi_ev);
a713b4d7
HMH		 3178 break;
3179 case 3:
3827e7a3 3180 /* 0x3000-0x3FFF: bay-related wakeups */
a713b4d7
HMH		 3181 if (hkey == 0x3003) {
3182 hotkey_autosleep_ack = 1;
3183 printk(TPACPI_INFO
3184 "bay ejected\n");
50ebec09 3185 hotkey_wakeup_hotunplug_complete_notify_change();
3827e7a3 3186 known_ev = true;
a713b4d7 3187 } else {
3827e7a3 3188 known_ev = false;
a713b4d7
HMH		 3189 }
3190 break;
3191 case 4:
3827e7a3 3192 /* 0x4000-0x4FFF: dock-related wakeups */
a713b4d7
HMH		 3193 if (hkey == 0x4003) {
3194 hotkey_autosleep_ack = 1;
3195 printk(TPACPI_INFO
3196 "undocked\n");
50ebec09 3197 hotkey_wakeup_hotunplug_complete_notify_change();
3827e7a3 3198 known_ev = true;
a713b4d7 3199 } else {
3827e7a3 3200 known_ev = false;
a713b4d7
HMH		 3201 }
3202 break;
ff80f137 3203 case 5:
d1edb2b5 3204 /* 0x5000-0x5FFF: human interface helpers */
3827e7a3
HMH		 3205 known_ev = hotkey_notify_usrevent(hkey, &send_acpi_ev,
3206 &ignore_acpi_ev);
ff80f137 3207 break;
106b4e66
HMH		 3208 case 6:
3209 /* 0x6000-0x6FFF: thermal alarms */
3210 known_ev = hotkey_notify_thermal(hkey, &send_acpi_ev,
3211 &ignore_acpi_ev);
3212 break;
ff80f137
HMH		 3213 case 7:
3214 /* 0x7000-0x7FFF: misc */
3215 if (tp_features.hotkey_wlsw && hkey == 0x7000) {
733e27c1 3216 tpacpi_send_radiosw_update();
3b64b51d 3217 send_acpi_ev = 0;
3827e7a3 3218 known_ev = true;
6a38abbf 3219 break;
6a38abbf 3220 }
ff80f137
HMH		 3221 /* fallthrough to default */
3222 default:
3827e7a3 3223 known_ev = false;
3b64b51d 3224 }
3827e7a3 3225 if (!known_ev) {
35ff8b9f
HMH		 3226 printk(TPACPI_NOTICE
3227 "unhandled HKEY event 0x%04x\n", hkey);
cb429358
HMH		 3228 printk(TPACPI_NOTICE
3229 "please report the conditions when this "
3230 "event happened to %s\n", TPACPI_MAIL);
6a38abbf 3231 }
ff80f137 3232
3eea123d 3233 /* Legacy events */
35ff8b9f
HMH		 3234 if (!ignore_acpi_ev &&
3235 (send_acpi_ev || hotkey_report_mode < 2)) {
3236 acpi_bus_generate_proc_event(ibm->acpi->device,
3237 event, hkey);
3e5ce914 3238 }
ff80f137 3239
3eea123d 3240 /* netlink events */
3e5ce914 3241 if (!ignore_acpi_ev && send_acpi_ev) {
35ff8b9f
HMH		 3242 acpi_bus_generate_netlink_event(
3243 ibm->acpi->device->pnp.device_class,
e0b36fc5 3244 dev_name(&ibm->acpi->device->dev),
35ff8b9f 3245 event, hkey);
3eea123d 3246 }
56b6aeb0
HMH		 3247 }
3248}
3249
a713b4d7
HMH		 3250static void hotkey_suspend(pm_message_t state)
3251{
3252 /* Do these on suspend, we get the events on early resume! */
3253 hotkey_wakeup_reason = TP_ACPI_WAKEUP_NONE;
3254 hotkey_autosleep_ack = 0;
3255}
3256
5c29d58f
HMH		 3257static void hotkey_resume(void)
3258{
d64c81c4
HMH		 3259 tpacpi_disable_brightness_delay();
3260
b2c985e7 3261 if (hotkey_mask_get())
35ff8b9f
HMH		 3262 printk(TPACPI_ERR
3263 "error while trying to read hot key mask "
3264 "from firmware\n");
733e27c1 3265 tpacpi_send_radiosw_update();
6c231bd5 3266 hotkey_tablet_mode_notify_change();
50ebec09
HMH		 3267 hotkey_wakeup_reason_notify_change();
3268 hotkey_wakeup_hotunplug_complete_notify_change();
01e88f25 3269 hotkey_poll_setup_safe(0);
5c29d58f
HMH		 3270}
3271
a0416420 3272/* procfs -------------------------------------------------------------- */
78f81cc4 3273static int hotkey_read(char *p)
1da177e4 3274{
ae92bd17 3275 int res, status;
1da177e4
LT		 3276 int len = 0;
3277
d8fd94d9 3278 if (!tp_features.hotkey) {
78f81cc4
BD		 3279 len += sprintf(p + len, "status:\t\tnot supported\n");
3280 return len;
3281 }
3282
7646ea88 3283 if (mutex_lock_killable(&hotkey_mutex))
fc589a3c 3284 return -ERESTARTSYS;
b2c985e7
HMH		 3285 res = hotkey_status_get(&status);
3286 if (!res)
3287 res = hotkey_mask_get();
40ca9fdf 3288 mutex_unlock(&hotkey_mutex);
b86c4722
HMH		 3289 if (res)
3290 return res;
1da177e4
LT		 3291
3292 len += sprintf(p + len, "status:\t\t%s\n", enabled(status, 0));
d8fd94d9 3293 if (tp_features.hotkey_mask) {
b2c985e7 3294 len += sprintf(p + len, "mask:\t\t0x%08x\n", hotkey_mask);
1da177e4
LT		 3295 len += sprintf(p + len,
3296 "commands:\tenable, disable, reset, <mask>\n");
3297 } else {
3298 len += sprintf(p + len, "mask:\t\tnot supported\n");
3299 len += sprintf(p + len, "commands:\tenable, disable, reset\n");
3300 }
3301
3302 return len;
3303}
3304
406e988b 3305static void hotkey_enabledisable_warn(bool enable)
2586d566
HMH		 3306{
3307 tpacpi_log_usertask("procfs hotkey enable/disable");
406e988b
HMH		 3308 if (!WARN((tpacpi_lifecycle == TPACPI_LIFE_RUNNING || !enable),
3309 TPACPI_WARN
3310 "hotkey enable/disable functionality has been "
3311 "removed from the driver. Hotkeys are always "
3312 "enabled\n"))
3313 printk(TPACPI_ERR
3314 "Please remove the hotkey=enable module "
3315 "parameter, it is deprecated. Hotkeys are always "
3316 "enabled\n");
2586d566
HMH		 3317}
3318
78f81cc4 3319static int hotkey_write(char *buf)
1da177e4 3320{
2586d566 3321 int res;
ae92bd17 3322 u32 mask;
1da177e4 3323 char *cmd;
1da177e4 3324
d8fd94d9 3325 if (!tp_features.hotkey)
1da177e4
LT		 3326 return -ENODEV;
3327
7646ea88 3328 if (mutex_lock_killable(&hotkey_mutex))
fc589a3c 3329 return -ERESTARTSYS;
40ca9fdf 3330
b2c985e7 3331 mask = hotkey_mask;
78f81cc4 3332
40ca9fdf 3333 res = 0;
1da177e4
LT		 3334 while ((cmd = next_cmd(&buf))) {
3335 if (strlencmp(cmd, "enable") == 0) {
406e988b 3336 hotkey_enabledisable_warn(1);
1da177e4 3337 } else if (strlencmp(cmd, "disable") == 0) {
406e988b 3338 hotkey_enabledisable_warn(0);
2586d566 3339 res = -EPERM;
1da177e4 3340 } else if (strlencmp(cmd, "reset") == 0) {
78f81cc4 3341 mask = hotkey_orig_mask;
1da177e4
LT		 3342 } else if (sscanf(cmd, "0x%x", &mask) == 1) {
3343 /* mask set */
3344 } else if (sscanf(cmd, "%x", &mask) == 1) {
3345 /* mask set */
40ca9fdf
HMH		 3346 } else {
3347 res = -EINVAL;
3348 goto errexit;
3349 }
1da177e4 3350 }
56e2c200
HMH		 3351
3352 if (!res)
3353 tpacpi_disclose_usertask("procfs hotkey",
3354 "set mask to 0x%08x\n", mask);
3355
b2c985e7
HMH		 3356 if (!res && mask != hotkey_mask)
3357 res = hotkey_mask_set(mask);
1da177e4 3358
40ca9fdf
HMH		 3359errexit:
3360 mutex_unlock(&hotkey_mutex);
3361 return res;
78f81cc4 3362}
1da177e4 3363
1ba90e3a 3364static const struct acpi_device_id ibm_htk_device_ids[] = {
e0c7dfe7 3365 {TPACPI_ACPI_HKEY_HID, 0},
1ba90e3a
TR		 3366 {"", 0},
3367};
3368
8d376cd6 3369static struct tp_acpi_drv_struct ibm_hotkey_acpidriver = {
1ba90e3a 3370 .hid = ibm_htk_device_ids,
8d376cd6
HMH		 3371 .notify = hotkey_notify,
3372 .handle = &hkey_handle,
3373 .type = ACPI_DEVICE_NOTIFY,
3374};
3375
a5763f22
HMH		 3376static struct ibm_struct hotkey_driver_data = {
3377 .name = "hotkey",
a5763f22
HMH		 3378 .read = hotkey_read,
3379 .write = hotkey_write,
3380 .exit = hotkey_exit,
5c29d58f 3381 .resume = hotkey_resume,
a713b4d7 3382 .suspend = hotkey_suspend,
8d376cd6 3383 .acpi = &ibm_hotkey_acpidriver,
a5763f22
HMH		 3384};
3385
56b6aeb0
HMH		 3386/*************************************************************************
3387 * Bluetooth subdriver
3388 */
1da177e4 3389
f74a27d4
HMH		 3390enum {
3391 /* ACPI GBDC/SBDC bits */
3392 TP_ACPI_BLUETOOTH_HWPRESENT = 0x01, /* Bluetooth hw available */
3393 TP_ACPI_BLUETOOTH_RADIOSSW = 0x02, /* Bluetooth radio enabled */
153f8220
HMH		 3394 TP_ACPI_BLUETOOTH_RESUMECTRL = 0x04, /* Bluetooth state at resume:
3395 off / last state */
3396};
3397
3398enum {
3399 /* ACPI \BLTH commands */
3400 TP_ACPI_BLTH_GET_ULTRAPORT_ID = 0x00, /* Get Ultraport BT ID */
3401 TP_ACPI_BLTH_GET_PWR_ON_RESUME = 0x01, /* Get power-on-resume state */
3402 TP_ACPI_BLTH_PWR_ON_ON_RESUME = 0x02, /* Resume powered on */
3403 TP_ACPI_BLTH_PWR_OFF_ON_RESUME = 0x03, /* Resume powered off */
3404 TP_ACPI_BLTH_SAVE_STATE = 0x05, /* Save state for S4/S5 */
f74a27d4
HMH		 3405};
3406
bee4cd9b
HMH		 3407#define TPACPI_RFK_BLUETOOTH_SW_NAME "tpacpi_bluetooth_sw"
3408
153f8220
HMH		 3409static void bluetooth_suspend(pm_message_t state)
3410{
3411 /* Try to make sure radio will resume powered off */
bee4cd9b
HMH		 3412 if (!acpi_evalf(NULL, NULL, "\\BLTH", "vd",
3413 TP_ACPI_BLTH_PWR_OFF_ON_RESUME))
3414 vdbg_printk(TPACPI_DBG_RFKILL,
3415 "bluetooth power down on resume request failed\n");
153f8220
HMH		 3416}
3417
19d337df 3418static int bluetooth_get_status(void)
07431ec8
HMH		 3419{
3420 int status;
3421
a73f3091
HMH		 3422#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
3423 if (dbg_bluetoothemul)
3424 return (tpacpi_bluetooth_emulstate) ?
19d337df 3425 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF;
a73f3091
HMH		 3426#endif
3427
07431ec8
HMH		 3428 if (!acpi_evalf(hkey_handle, &status, "GBDC", "d"))
3429 return -EIO;
3430
0e74dc26 3431 return ((status & TP_ACPI_BLUETOOTH_RADIOSSW) != 0) ?
19d337df 3432 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF;
07431ec8
HMH		 3433}
3434
19d337df 3435static int bluetooth_set_status(enum tpacpi_rfkill_state state)
0e74dc26
HMH		 3436{
3437 int status;
3438
bee4cd9b 3439 vdbg_printk(TPACPI_DBG_RFKILL,
19d337df
JB		 3440 "will attempt to %s bluetooth\n",
3441 (state == TPACPI_RFK_RADIO_ON) ? "enable" : "disable");
bee4cd9b 3442
a73f3091
HMH		 3443#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
3444 if (dbg_bluetoothemul) {
19d337df 3445 tpacpi_bluetooth_emulstate = (state == TPACPI_RFK_RADIO_ON);
a73f3091
HMH		 3446 return 0;
3447 }
3448#endif
3449
153f8220 3450 /* We make sure to keep TP_ACPI_BLUETOOTH_RESUMECTRL off */
19d337df 3451 if (state == TPACPI_RFK_RADIO_ON)
153f8220 3452 status = TP_ACPI_BLUETOOTH_RADIOSSW;
07431ec8 3453 else
153f8220 3454 status = 0;
19d337df 3455
07431ec8
HMH		 3456 if (!acpi_evalf(hkey_handle, NULL, "SBDC", "vd", status))
3457 return -EIO;
3458
3459 return 0;
3460}
f74a27d4 3461
d3a6ade4
HMH		 3462/* sysfs bluetooth enable ---------------------------------------------- */
3463static ssize_t bluetooth_enable_show(struct device *dev,
3464 struct device_attribute *attr,
3465 char *buf)
3466{
19d337df
JB		 3467 return tpacpi_rfk_sysfs_enable_show(TPACPI_RFK_BLUETOOTH_SW_ID,
3468 attr, buf);
d3a6ade4
HMH		 3469}
3470
3471static ssize_t bluetooth_enable_store(struct device *dev,
3472 struct device_attribute *attr,
3473 const char *buf, size_t count)
3474{
19d337df
JB		 3475 return tpacpi_rfk_sysfs_enable_store(TPACPI_RFK_BLUETOOTH_SW_ID,
3476 attr, buf, count);
d3a6ade4
HMH		 3477}
3478
3479static struct device_attribute dev_attr_bluetooth_enable =
cc4c24e1 3480 __ATTR(bluetooth_enable, S_IWUSR | S_IRUGO,
d3a6ade4
HMH		 3481 bluetooth_enable_show, bluetooth_enable_store);
3482
3483/* --------------------------------------------------------------------- */
3484
3485static struct attribute *bluetooth_attributes[] = {
3486 &dev_attr_bluetooth_enable.attr,
3487 NULL
3488};
3489
3490static const struct attribute_group bluetooth_attr_group = {
d3a6ade4
HMH		 3491 .attrs = bluetooth_attributes,
3492};
3493
19d337df
JB		 3494static const struct tpacpi_rfk_ops bluetooth_tprfk_ops = {
3495 .get_status = bluetooth_get_status,
3496 .set_status = bluetooth_set_status,
3497};
0e74dc26 3498
90d9d3c7
HMH		 3499static void bluetooth_shutdown(void)
3500{
3501 /* Order firmware to save current state to NVRAM */
3502 if (!acpi_evalf(NULL, NULL, "\\BLTH", "vd",
3503 TP_ACPI_BLTH_SAVE_STATE))
3504 printk(TPACPI_NOTICE
3505 "failed to save bluetooth state to NVRAM\n");
bee4cd9b
HMH		 3506 else
3507 vdbg_printk(TPACPI_DBG_RFKILL,
3508 "bluestooth state saved to NVRAM\n");
90d9d3c7
HMH		 3509}
3510
07431ec8
HMH		 3511static void bluetooth_exit(void)
3512{
3513 sysfs_remove_group(&tpacpi_pdev->dev.kobj,
3514 &bluetooth_attr_group);
19d337df
JB		 3515
3516 tpacpi_destroy_rfkill(TPACPI_RFK_BLUETOOTH_SW_ID);
3517
3518 bluetooth_shutdown();
07431ec8
HMH		 3519}
3520
a5763f22 3521static int __init bluetooth_init(struct ibm_init_struct *iibm)
1da177e4 3522{
d3a6ade4 3523 int res;
d6fdd1e9
HMH		 3524 int status = 0;
3525
bee4cd9b
HMH		 3526 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL,
3527 "initializing bluetooth subdriver\n");
fe08bc4b 3528
e0c7dfe7 3529 TPACPI_ACPIHANDLE_INIT(hkey);
5fba344c 3530
78f81cc4
BD		 3531 /* bluetooth not supported on 570, 600e/x, 770e, 770x, A21e, A2xm/p,
3532 G4x, R30, R31, R40e, R50e, T20-22, X20-21 */
d8fd94d9 3533 tp_features.bluetooth = hkey_handle &&
d6fdd1e9
HMH		 3534 acpi_evalf(hkey_handle, &status, "GBDC", "qd");
3535
bee4cd9b
HMH		 3536 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL,
3537 "bluetooth is %s, status 0x%02x\n",
d6fdd1e9
HMH		 3538 str_supported(tp_features.bluetooth),
3539 status);
3540
a73f3091
HMH		 3541#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
3542 if (dbg_bluetoothemul) {
3543 tp_features.bluetooth = 1;
3544 printk(TPACPI_INFO
3545 "bluetooth switch emulation enabled\n");
3546 } else
3547#endif
3a872080
HMH		 3548 if (tp_features.bluetooth &&
3549 !(status & TP_ACPI_BLUETOOTH_HWPRESENT)) {
3550 /* no bluetooth hardware present in system */
3551 tp_features.bluetooth = 0;
bee4cd9b 3552 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL,
3a872080
HMH		 3553 "bluetooth hardware not installed\n");
3554 }
3555
0e74dc26
HMH		 3556 if (!tp_features.bluetooth)
3557 return 1;
3558
0e74dc26 3559 res = tpacpi_new_rfkill(TPACPI_RFK_BLUETOOTH_SW_ID,
19d337df 3560 &bluetooth_tprfk_ops,
0e74dc26 3561 RFKILL_TYPE_BLUETOOTH,
bee4cd9b 3562 TPACPI_RFK_BLUETOOTH_SW_NAME,
19d337df
JB		 3563 true);
3564 if (res)
3565 return res;
3566
3567 res = sysfs_create_group(&tpacpi_pdev->dev.kobj,
3568 &bluetooth_attr_group);
0e74dc26 3569 if (res) {
19d337df 3570 tpacpi_destroy_rfkill(TPACPI_RFK_BLUETOOTH_SW_ID);
0e74dc26 3571 return res;
d6fdd1e9 3572 }
fe08bc4b 3573
0e74dc26 3574 return 0;
1da177e4
LT		 3575}
3576
d3a6ade4 3577/* procfs -------------------------------------------------------------- */
78f81cc4 3578static int bluetooth_read(char *p)
1da177e4 3579{
19d337df 3580 return tpacpi_rfk_procfs_read(TPACPI_RFK_BLUETOOTH_SW_ID, p);
1da177e4
LT		 3581}
3582
78f81cc4 3583static int bluetooth_write(char *buf)
1da177e4 3584{
19d337df 3585 return tpacpi_rfk_procfs_write(TPACPI_RFK_BLUETOOTH_SW_ID, buf);
1da177e4
LT		 3586}
3587
a5763f22
HMH		 3588static struct ibm_struct bluetooth_driver_data = {
3589 .name = "bluetooth",
3590 .read = bluetooth_read,
3591 .write = bluetooth_write,
d3a6ade4 3592 .exit = bluetooth_exit,
153f8220 3593 .suspend = bluetooth_suspend,
90d9d3c7 3594 .shutdown = bluetooth_shutdown,
a5763f22
HMH		 3595};
3596
56b6aeb0
HMH		 3597/*************************************************************************
3598 * Wan subdriver
3599 */
3600
f74a27d4
HMH		 3601enum {
3602 /* ACPI GWAN/SWAN bits */
3603 TP_ACPI_WANCARD_HWPRESENT = 0x01, /* Wan hw available */
3604 TP_ACPI_WANCARD_RADIOSSW = 0x02, /* Wan radio enabled */
153f8220
HMH		 3605 TP_ACPI_WANCARD_RESUMECTRL = 0x04, /* Wan state at resume:
3606 off / last state */
f74a27d4
HMH		 3607};
3608
bee4cd9b
HMH		 3609#define TPACPI_RFK_WWAN_SW_NAME "tpacpi_wwan_sw"
3610
153f8220
HMH		 3611static void wan_suspend(pm_message_t state)
3612{
3613 /* Try to make sure radio will resume powered off */
bee4cd9b
HMH		 3614 if (!acpi_evalf(NULL, NULL, "\\WGSV", "qvd",
3615 TP_ACPI_WGSV_PWR_OFF_ON_RESUME))
3616 vdbg_printk(TPACPI_DBG_RFKILL,
3617 "WWAN power down on resume request failed\n");
153f8220
HMH		 3618}
3619
19d337df 3620static int wan_get_status(void)
07431ec8
HMH		 3621{
3622 int status;
3623
a73f3091
HMH		 3624#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
3625 if (dbg_wwanemul)
3626 return (tpacpi_wwan_emulstate) ?
19d337df 3627 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF;
a73f3091
HMH		 3628#endif
3629
07431ec8
HMH		 3630 if (!acpi_evalf(hkey_handle, &status, "GWAN", "d"))
3631 return -EIO;
3632
0e74dc26 3633 return ((status & TP_ACPI_WANCARD_RADIOSSW) != 0) ?
19d337df 3634 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF;
0e74dc26
HMH		 3635}
3636
19d337df 3637static int wan_set_status(enum tpacpi_rfkill_state state)
07431ec8
HMH		 3638{
3639 int status;
3640
bee4cd9b 3641 vdbg_printk(TPACPI_DBG_RFKILL,
19d337df
JB		 3642 "will attempt to %s wwan\n",
3643 (state == TPACPI_RFK_RADIO_ON) ? "enable" : "disable");
bee4cd9b 3644
a73f3091
HMH		 3645#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
3646 if (dbg_wwanemul) {
19d337df 3647 tpacpi_wwan_emulstate = (state == TPACPI_RFK_RADIO_ON);
a73f3091
HMH		 3648 return 0;
3649 }
3650#endif
3651
153f8220 3652 /* We make sure to keep TP_ACPI_WANCARD_RESUMECTRL off */
19d337df 3653 if (state == TPACPI_RFK_RADIO_ON)
153f8220 3654 status = TP_ACPI_WANCARD_RADIOSSW;
07431ec8 3655 else
153f8220 3656 status = 0;
19d337df 3657
07431ec8
HMH		 3658 if (!acpi_evalf(hkey_handle, NULL, "SWAN", "vd", status))
3659 return -EIO;
3660
3661 return 0;
3662}
f74a27d4 3663
d3a6ade4
HMH		 3664/* sysfs wan enable ---------------------------------------------------- */
3665static ssize_t wan_enable_show(struct device *dev,
3666 struct device_attribute *attr,
3667 char *buf)
3668{
19d337df
JB		 3669 return tpacpi_rfk_sysfs_enable_show(TPACPI_RFK_WWAN_SW_ID,
3670 attr, buf);
d3a6ade4
HMH		 3671}
3672
3673static ssize_t wan_enable_store(struct device *dev,
3674 struct device_attribute *attr,
3675 const char *buf, size_t count)
3676{
19d337df
JB		 3677 return tpacpi_rfk_sysfs_enable_store(TPACPI_RFK_WWAN_SW_ID,
3678 attr, buf, count);
d3a6ade4
HMH		 3679}
3680
3681static struct device_attribute dev_attr_wan_enable =
cc4c24e1 3682 __ATTR(wwan_enable, S_IWUSR | S_IRUGO,
d3a6ade4
HMH		 3683 wan_enable_show, wan_enable_store);
3684
3685/* --------------------------------------------------------------------- */
3686
3687static struct attribute *wan_attributes[] = {
3688 &dev_attr_wan_enable.attr,
3689 NULL
3690};
3691
3692static const struct attribute_group wan_attr_group = {
d3a6ade4
HMH		 3693 .attrs = wan_attributes,
3694};
3695
19d337df
JB		 3696static const struct tpacpi_rfk_ops wan_tprfk_ops = {
3697 .get_status = wan_get_status,
3698 .set_status = wan_set_status,
3699};
0e74dc26 3700
90d9d3c7
HMH		 3701static void wan_shutdown(void)
3702{
3703 /* Order firmware to save current state to NVRAM */
3704 if (!acpi_evalf(NULL, NULL, "\\WGSV", "vd",
3705 TP_ACPI_WGSV_SAVE_STATE))
3706 printk(TPACPI_NOTICE
3707 "failed to save WWAN state to NVRAM\n");
bee4cd9b
HMH		 3708 else
3709 vdbg_printk(TPACPI_DBG_RFKILL,
3710 "WWAN state saved to NVRAM\n");
90d9d3c7
HMH		 3711}
3712
07431ec8
HMH		 3713static void wan_exit(void)
3714{
3715 sysfs_remove_group(&tpacpi_pdev->dev.kobj,
3716 &wan_attr_group);
19d337df
JB		 3717
3718 tpacpi_destroy_rfkill(TPACPI_RFK_WWAN_SW_ID);
3719
3720 wan_shutdown();
07431ec8
HMH		 3721}
3722
a5763f22 3723static int __init wan_init(struct ibm_init_struct *iibm)
42adb53c 3724{
d3a6ade4 3725 int res;
d6fdd1e9
HMH		 3726 int status = 0;
3727
bee4cd9b
HMH		 3728 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL,
3729 "initializing wan subdriver\n");
fe08bc4b 3730
e0c7dfe7 3731 TPACPI_ACPIHANDLE_INIT(hkey);
5fba344c 3732
d8fd94d9 3733 tp_features.wan = hkey_handle &&
d6fdd1e9
HMH		 3734 acpi_evalf(hkey_handle, &status, "GWAN", "qd");
3735
bee4cd9b
HMH		 3736 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL,
3737 "wan is %s, status 0x%02x\n",
d6fdd1e9
HMH		 3738 str_supported(tp_features.wan),
3739 status);
3740
a73f3091
HMH		 3741#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
3742 if (dbg_wwanemul) {
3743 tp_features.wan = 1;
3744 printk(TPACPI_INFO
3745 "wwan switch emulation enabled\n");
3746 } else
3747#endif
3a872080
HMH		 3748 if (tp_features.wan &&
3749 !(status & TP_ACPI_WANCARD_HWPRESENT)) {
3750 /* no wan hardware present in system */
3751 tp_features.wan = 0;
bee4cd9b 3752 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL,
3a872080
HMH		 3753 "wan hardware not installed\n");
3754 }
3755
0e74dc26
HMH		 3756 if (!tp_features.wan)
3757 return 1;
3758
0e74dc26 3759 res = tpacpi_new_rfkill(TPACPI_RFK_WWAN_SW_ID,
19d337df 3760 &wan_tprfk_ops,
0e74dc26 3761 RFKILL_TYPE_WWAN,
bee4cd9b 3762 TPACPI_RFK_WWAN_SW_NAME,
19d337df
JB		 3763 true);
3764 if (res)
3765 return res;
3766
3767 res = sysfs_create_group(&tpacpi_pdev->dev.kobj,
3768 &wan_attr_group);
3769
0e74dc26 3770 if (res) {
19d337df 3771 tpacpi_destroy_rfkill(TPACPI_RFK_WWAN_SW_ID);
0e74dc26 3772 return res;
d6fdd1e9 3773 }
fe08bc4b 3774
0e74dc26 3775 return 0;
42adb53c
JF		 3776}
3777
d3a6ade4 3778/* procfs -------------------------------------------------------------- */
42adb53c
JF		 3779static int wan_read(char *p)
3780{
19d337df 3781 return tpacpi_rfk_procfs_read(TPACPI_RFK_WWAN_SW_ID, p);
42adb53c
JF		 3782}
3783
3784static int wan_write(char *buf)
3785{
19d337df 3786 return tpacpi_rfk_procfs_write(TPACPI_RFK_WWAN_SW_ID, buf);
42adb53c
JF		 3787}
3788
a5763f22
HMH		 3789static struct ibm_struct wan_driver_data = {
3790 .name = "wan",
3791 .read = wan_read,
3792 .write = wan_write,
d3a6ade4 3793 .exit = wan_exit,
153f8220 3794 .suspend = wan_suspend,
90d9d3c7 3795 .shutdown = wan_shutdown,
a5763f22
HMH		 3796};
3797
0045c0aa
HMH		 3798/*************************************************************************
3799 * UWB subdriver
3800 */
3801
3802enum {
3803 /* ACPI GUWB/SUWB bits */
3804 TP_ACPI_UWB_HWPRESENT = 0x01, /* UWB hw available */
3805 TP_ACPI_UWB_RADIOSSW = 0x02, /* UWB radio enabled */
3806};
3807
bee4cd9b
HMH		 3808#define TPACPI_RFK_UWB_SW_NAME "tpacpi_uwb_sw"
3809
19d337df 3810static int uwb_get_status(void)
0045c0aa
HMH		 3811{
3812 int status;
3813
0045c0aa
HMH		 3814#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
3815 if (dbg_uwbemul)
3816 return (tpacpi_uwb_emulstate) ?
19d337df 3817 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF;
0045c0aa
HMH		 3818#endif
3819
3820 if (!acpi_evalf(hkey_handle, &status, "GUWB", "d"))
3821 return -EIO;
3822
3823 return ((status & TP_ACPI_UWB_RADIOSSW) != 0) ?
19d337df 3824 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF;
0045c0aa
HMH		 3825}
3826
19d337df 3827static int uwb_set_status(enum tpacpi_rfkill_state state)
0045c0aa
HMH		 3828{
3829 int status;
3830
bee4cd9b 3831 vdbg_printk(TPACPI_DBG_RFKILL,
19d337df
JB		 3832 "will attempt to %s UWB\n",
3833 (state == TPACPI_RFK_RADIO_ON) ? "enable" : "disable");
bee4cd9b 3834
0045c0aa
HMH		 3835#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
3836 if (dbg_uwbemul) {
19d337df 3837 tpacpi_uwb_emulstate = (state == TPACPI_RFK_RADIO_ON);
0045c0aa
HMH		 3838 return 0;
3839 }
3840#endif
3841
19d337df
JB		 3842 if (state == TPACPI_RFK_RADIO_ON)
3843 status = TP_ACPI_UWB_RADIOSSW;
3844 else
3845 status = 0;
3846
0045c0aa
HMH		 3847 if (!acpi_evalf(hkey_handle, NULL, "SUWB", "vd", status))
3848 return -EIO;
3849
0045c0aa
HMH		 3850 return 0;
3851}
3852
3853/* --------------------------------------------------------------------- */
3854
19d337df
JB		 3855static const struct tpacpi_rfk_ops uwb_tprfk_ops = {
3856 .get_status = uwb_get_status,
3857 .set_status = uwb_set_status,
3858};
0045c0aa
HMH		 3859
3860static void uwb_exit(void)
3861{
19d337df 3862 tpacpi_destroy_rfkill(TPACPI_RFK_UWB_SW_ID);
0045c0aa
HMH		 3863}
3864
3865static int __init uwb_init(struct ibm_init_struct *iibm)
3866{
3867 int res;
3868 int status = 0;
3869
bee4cd9b
HMH		 3870 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL,
3871 "initializing uwb subdriver\n");
0045c0aa
HMH		 3872
3873 TPACPI_ACPIHANDLE_INIT(hkey);
3874
3875 tp_features.uwb = hkey_handle &&
3876 acpi_evalf(hkey_handle, &status, "GUWB", "qd");
3877
bee4cd9b
HMH		 3878 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL,
3879 "uwb is %s, status 0x%02x\n",
0045c0aa
HMH		 3880 str_supported(tp_features.uwb),
3881 status);
3882
3883#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
3884 if (dbg_uwbemul) {
3885 tp_features.uwb = 1;
3886 printk(TPACPI_INFO
3887 "uwb switch emulation enabled\n");
3888 } else
3889#endif
3890 if (tp_features.uwb &&
3891 !(status & TP_ACPI_UWB_HWPRESENT)) {
3892 /* no uwb hardware present in system */
3893 tp_features.uwb = 0;
3894 dbg_printk(TPACPI_DBG_INIT,
3895 "uwb hardware not installed\n");
3896 }
3897
3898 if (!tp_features.uwb)
3899 return 1;
3900
3901 res = tpacpi_new_rfkill(TPACPI_RFK_UWB_SW_ID,
19d337df 3902 &uwb_tprfk_ops,
0045c0aa 3903 RFKILL_TYPE_UWB,
bee4cd9b 3904 TPACPI_RFK_UWB_SW_NAME,
19d337df 3905 false);
0045c0aa
HMH		 3906 return res;
3907}
3908
3909static struct ibm_struct uwb_driver_data = {
3910 .name = "uwb",
3911 .exit = uwb_exit,
3912 .flags.experimental = 1,
3913};
3914
56b6aeb0
HMH		 3915/*************************************************************************
3916 * Video subdriver
3917 */
3918
d7c1d17d
HMH		 3919#ifdef CONFIG_THINKPAD_ACPI_VIDEO
3920
f74a27d4
HMH		 3921enum video_access_mode {
3922 TPACPI_VIDEO_NONE = 0,
3923 TPACPI_VIDEO_570, /* 570 */
3924 TPACPI_VIDEO_770, /* 600e/x, 770e, 770x */
3925 TPACPI_VIDEO_NEW, /* all others */
3926};
3927
3928enum { /* video status flags, based on VIDEO_570 */
3929 TP_ACPI_VIDEO_S_LCD = 0x01, /* LCD output enabled */
3930 TP_ACPI_VIDEO_S_CRT = 0x02, /* CRT output enabled */
3931 TP_ACPI_VIDEO_S_DVI = 0x08, /* DVI output enabled */
3932};
3933
3934enum { /* TPACPI_VIDEO_570 constants */
3935 TP_ACPI_VIDEO_570_PHSCMD = 0x87, /* unknown magic constant :( */
3936 TP_ACPI_VIDEO_570_PHSMASK = 0x03, /* PHS bits that map to
3937 * video_status_flags */
3938 TP_ACPI_VIDEO_570_PHS2CMD = 0x8b, /* unknown magic constant :( */
3939 TP_ACPI_VIDEO_570_PHS2SET = 0x80, /* unknown magic constant :( */
3940};
3941
9a8e1738
HMH		 3942static enum video_access_mode video_supported;
3943static int video_orig_autosw;
78f81cc4 3944
f74a27d4
HMH		 3945static int video_autosw_get(void);
3946static int video_autosw_set(int enable);
3947
e0c7dfe7 3948TPACPI_HANDLE(vid2, root, "\\_SB.PCI0.AGPB.VID"); /* G41 */
56b6aeb0 3949
a5763f22 3950static int __init video_init(struct ibm_init_struct *iibm)
1da177e4 3951{
78f81cc4
BD		 3952 int ivga;
3953
fe08bc4b
HMH		 3954 vdbg_printk(TPACPI_DBG_INIT, "initializing video subdriver\n");
3955
e0c7dfe7
HMH		 3956 TPACPI_ACPIHANDLE_INIT(vid);
3957 TPACPI_ACPIHANDLE_INIT(vid2);
5fba344c 3958
78f81cc4
BD		 3959 if (vid2_handle && acpi_evalf(NULL, &ivga, "\\IVGA", "d") && ivga)
3960 /* G41, assume IVGA doesn't change */
3961 vid_handle = vid2_handle;
3962
3963 if (!vid_handle)
3964 /* video switching not supported on R30, R31 */
efa27145 3965 video_supported = TPACPI_VIDEO_NONE;
78f81cc4
BD		 3966 else if (acpi_evalf(vid_handle, &video_orig_autosw, "SWIT", "qd"))
3967 /* 570 */
efa27145 3968 video_supported = TPACPI_VIDEO_570;
78f81cc4
BD		 3969 else if (acpi_evalf(vid_handle, &video_orig_autosw, "^VADL", "qd"))
3970 /* 600e/x, 770e, 770x */
efa27145 3971 video_supported = TPACPI_VIDEO_770;
78f81cc4
BD		 3972 else
3973 /* all others */
efa27145 3974 video_supported = TPACPI_VIDEO_NEW;
1da177e4 3975
fe08bc4b
HMH		 3976 vdbg_printk(TPACPI_DBG_INIT, "video is %s, mode %d\n",
3977 str_supported(video_supported != TPACPI_VIDEO_NONE),
3978 video_supported);
3979
5fba344c 3980 return (video_supported != TPACPI_VIDEO_NONE)? 0 : 1;
1da177e4
LT		 3981}
3982
56b6aeb0
HMH		 3983static void video_exit(void)
3984{
83f34724
HMH		 3985 dbg_printk(TPACPI_DBG_EXIT,
3986 "restoring original video autoswitch mode\n");
3987 if (video_autosw_set(video_orig_autosw))
e0c7dfe7 3988 printk(TPACPI_ERR "error while trying to restore original "
83f34724 3989 "video autoswitch mode\n");
56b6aeb0
HMH		 3990}
3991
83f34724 3992static int video_outputsw_get(void)
1da177e4
LT		 3993{
3994 int status = 0;
3995 int i;
3996
83f34724
HMH		 3997 switch (video_supported) {
3998 case TPACPI_VIDEO_570:
3999 if (!acpi_evalf(NULL, &i, "\\_SB.PHS", "dd",
4000 TP_ACPI_VIDEO_570_PHSCMD))
4001 return -EIO;
4002 status = i & TP_ACPI_VIDEO_570_PHSMASK;
4003 break;
4004 case TPACPI_VIDEO_770:
4005 if (!acpi_evalf(NULL, &i, "\\VCDL", "d"))
4006 return -EIO;
4007 if (i)
4008 status |= TP_ACPI_VIDEO_S_LCD;
4009 if (!acpi_evalf(NULL, &i, "\\VCDC", "d"))
4010 return -EIO;
4011 if (i)
4012 status |= TP_ACPI_VIDEO_S_CRT;
4013 break;
4014 case TPACPI_VIDEO_NEW:
4015 if (!acpi_evalf(NULL, NULL, "\\VUPS", "vd", 1) ||
4016 !acpi_evalf(NULL, &i, "\\VCDC", "d"))
4017 return -EIO;
4018 if (i)
4019 status |= TP_ACPI_VIDEO_S_CRT;
4020
4021 if (!acpi_evalf(NULL, NULL, "\\VUPS", "vd", 0) ||
4022 !acpi_evalf(NULL, &i, "\\VCDL", "d"))
4023 return -EIO;
4024 if (i)
4025 status |= TP_ACPI_VIDEO_S_LCD;
4026 if (!acpi_evalf(NULL, &i, "\\VCDD", "d"))
4027 return -EIO;
4028 if (i)
4029 status |= TP_ACPI_VIDEO_S_DVI;
4030 break;
4031 default:
4032 return -ENOSYS;
78f81cc4
BD		 4033 }
4034
4035 return status;
4036}
1da177e4 4037
83f34724 4038static int video_outputsw_set(int status)
78f81cc4 4039{
83f34724
HMH		 4040 int autosw;
4041 int res = 0;
4042
4043 switch (video_supported) {
4044 case TPACPI_VIDEO_570:
4045 res = acpi_evalf(NULL, NULL,
4046 "\\_SB.PHS2", "vdd",
4047 TP_ACPI_VIDEO_570_PHS2CMD,
4048 status | TP_ACPI_VIDEO_570_PHS2SET);
4049 break;
4050 case TPACPI_VIDEO_770:
4051 autosw = video_autosw_get();
4052 if (autosw < 0)
4053 return autosw;
1da177e4 4054
83f34724
HMH		 4055 res = video_autosw_set(1);
4056 if (res)
4057 return res;
4058 res = acpi_evalf(vid_handle, NULL,
4059 "ASWT", "vdd", status * 0x100, 0);
4060 if (!autosw && video_autosw_set(autosw)) {
35ff8b9f
HMH		 4061 printk(TPACPI_ERR
4062 "video auto-switch left enabled due to error\n");
83f34724
HMH		 4063 return -EIO;
4064 }
4065 break;
4066 case TPACPI_VIDEO_NEW:
4067 res = acpi_evalf(NULL, NULL, "\\VUPS", "vd", 0x80) &&
35ff8b9f 4068 acpi_evalf(NULL, NULL, "\\VSDS", "vdd", status, 1);
83f34724
HMH		 4069 break;
4070 default:
4071 return -ENOSYS;
4072 }
1da177e4 4073
83f34724 4074 return (res)? 0 : -EIO;
1da177e4
LT		 4075}
4076
83f34724 4077static int video_autosw_get(void)
78f81cc4 4078{
83f34724 4079 int autosw = 0;
78f81cc4 4080
83f34724
HMH		 4081 switch (video_supported) {
4082 case TPACPI_VIDEO_570:
4083 if (!acpi_evalf(vid_handle, &autosw, "SWIT", "d"))
4084 return -EIO;
4085 break;
4086 case TPACPI_VIDEO_770:
4087 case TPACPI_VIDEO_NEW:
4088 if (!acpi_evalf(vid_handle, &autosw, "^VDEE", "d"))
4089 return -EIO;
4090 break;
4091 default:
4092 return -ENOSYS;
4093 }
78f81cc4 4094
83f34724 4095 return autosw & 1;
78f81cc4
BD		 4096}
4097
83f34724 4098static int video_autosw_set(int enable)
78f81cc4 4099{
83f34724
HMH		 4100 if (!acpi_evalf(vid_handle, NULL, "_DOS", "vd", (enable)? 1 : 0))
4101 return -EIO;
4102 return 0;
78f81cc4
BD		 4103}
4104
83f34724 4105static int video_outputsw_cycle(void)
78f81cc4 4106{
83f34724
HMH		 4107 int autosw = video_autosw_get();
4108 int res;
78f81cc4 4109
83f34724
HMH		 4110 if (autosw < 0)
4111 return autosw;
78f81cc4 4112
83f34724
HMH		 4113 switch (video_supported) {
4114 case TPACPI_VIDEO_570:
4115 res = video_autosw_set(1);
4116 if (res)
4117 return res;
4118 res = acpi_evalf(ec_handle, NULL, "_Q16", "v");
4119 break;
4120 case TPACPI_VIDEO_770:
4121 case TPACPI_VIDEO_NEW:
4122 res = video_autosw_set(1);
4123 if (res)
4124 return res;
4125 res = acpi_evalf(vid_handle, NULL, "VSWT", "v");
4126 break;
4127 default:
4128 return -ENOSYS;
4129 }
4130 if (!autosw && video_autosw_set(autosw)) {
35ff8b9f
HMH		 4131 printk(TPACPI_ERR
4132 "video auto-switch left enabled due to error\n");
83f34724 4133 return -EIO;
78f81cc4
BD		 4134 }
4135
83f34724
HMH		 4136 return (res)? 0 : -EIO;
4137}
4138
4139static int video_expand_toggle(void)
4140{
4141 switch (video_supported) {
4142 case TPACPI_VIDEO_570:
4143 return acpi_evalf(ec_handle, NULL, "_Q17", "v")?
4144 0 : -EIO;
4145 case TPACPI_VIDEO_770:
4146 return acpi_evalf(vid_handle, NULL, "VEXP", "v")?
4147 0 : -EIO;
4148 case TPACPI_VIDEO_NEW:
4149 return acpi_evalf(NULL, NULL, "\\VEXP", "v")?
4150 0 : -EIO;
4151 default:
4152 return -ENOSYS;
4153 }
4154 /* not reached */
78f81cc4
BD		 4155}
4156
56b6aeb0
HMH		 4157static int video_read(char *p)
4158{
83f34724 4159 int status, autosw;
56b6aeb0
HMH		 4160 int len = 0;
4161
83f34724 4162 if (video_supported == TPACPI_VIDEO_NONE) {
56b6aeb0
HMH		 4163 len += sprintf(p + len, "status:\t\tnot supported\n");
4164 return len;
4165 }
4166
83f34724
HMH		 4167 status = video_outputsw_get();
4168 if (status < 0)
4169 return status;
4170
4171 autosw = video_autosw_get();
4172 if (autosw < 0)
4173 return autosw;
4174
56b6aeb0
HMH		 4175 len += sprintf(p + len, "status:\t\tsupported\n");
4176 len += sprintf(p + len, "lcd:\t\t%s\n", enabled(status, 0));
4177 len += sprintf(p + len, "crt:\t\t%s\n", enabled(status, 1));
efa27145 4178 if (video_supported == TPACPI_VIDEO_NEW)
56b6aeb0
HMH		 4179 len += sprintf(p + len, "dvi:\t\t%s\n", enabled(status, 3));
4180 len += sprintf(p + len, "auto:\t\t%s\n", enabled(autosw, 0));
4181 len += sprintf(p + len, "commands:\tlcd_enable, lcd_disable\n");
4182 len += sprintf(p + len, "commands:\tcrt_enable, crt_disable\n");
efa27145 4183 if (video_supported == TPACPI_VIDEO_NEW)
56b6aeb0
HMH		 4184 len += sprintf(p + len, "commands:\tdvi_enable, dvi_disable\n");
4185 len += sprintf(p + len, "commands:\tauto_enable, auto_disable\n");
4186 len += sprintf(p + len, "commands:\tvideo_switch, expand_toggle\n");
4187
4188 return len;
4189}
4190
78f81cc4 4191static int video_write(char *buf)
1da177e4
LT		 4192{
4193 char *cmd;
4194 int enable, disable, status;
83f34724 4195 int res;
1da177e4 4196
83f34724 4197 if (video_supported == TPACPI_VIDEO_NONE)
78f81cc4
BD		 4198 return -ENODEV;
4199
83f34724
HMH		 4200 enable = 0;
4201 disable = 0;
1da177e4
LT		 4202
4203 while ((cmd = next_cmd(&buf))) {
4204 if (strlencmp(cmd, "lcd_enable") == 0) {
83f34724 4205 enable |= TP_ACPI_VIDEO_S_LCD;
1da177e4 4206 } else if (strlencmp(cmd, "lcd_disable") == 0) {
83f34724 4207 disable |= TP_ACPI_VIDEO_S_LCD;
1da177e4 4208 } else if (strlencmp(cmd, "crt_enable") == 0) {
83f34724 4209 enable |= TP_ACPI_VIDEO_S_CRT;
1da177e4 4210 } else if (strlencmp(cmd, "crt_disable") == 0) {
83f34724 4211 disable |= TP_ACPI_VIDEO_S_CRT;
efa27145 4212 } else if (video_supported == TPACPI_VIDEO_NEW &&
78f81cc4 4213 strlencmp(cmd, "dvi_enable") == 0) {
83f34724 4214 enable |= TP_ACPI_VIDEO_S_DVI;
efa27145 4215 } else if (video_supported == TPACPI_VIDEO_NEW &&
78f81cc4 4216 strlencmp(cmd, "dvi_disable") == 0) {
83f34724 4217 disable |= TP_ACPI_VIDEO_S_DVI;
1da177e4 4218 } else if (strlencmp(cmd, "auto_enable") == 0) {
83f34724
HMH		 4219 res = video_autosw_set(1);
4220 if (res)
4221 return res;
1da177e4 4222 } else if (strlencmp(cmd, "auto_disable") == 0) {
83f34724
HMH		 4223 res = video_autosw_set(0);
4224 if (res)
4225 return res;
1da177e4 4226 } else if (strlencmp(cmd, "video_switch") == 0) {
83f34724
HMH		 4227 res = video_outputsw_cycle();
4228 if (res)
4229 return res;
1da177e4 4230 } else if (strlencmp(cmd, "expand_toggle") == 0) {
83f34724
HMH		 4231 res = video_expand_toggle();
4232 if (res)
4233 return res;
1da177e4
LT		 4234 } else
4235 return -EINVAL;
4236 }
4237
4238 if (enable || disable) {
83f34724
HMH		 4239 status = video_outputsw_get();
4240 if (status < 0)
4241 return status;
4242 res = video_outputsw_set((status & ~disable) | enable);
4243 if (res)
4244 return res;
1da177e4
LT		 4245 }
4246
4247 return 0;
4248}
4249
a5763f22
HMH		 4250static struct ibm_struct video_driver_data = {
4251 .name = "video",
4252 .read = video_read,
4253 .write = video_write,
4254 .exit = video_exit,
4255};
4256
d7c1d17d
HMH		 4257#endif /* CONFIG_THINKPAD_ACPI_VIDEO */
4258
56b6aeb0
HMH		 4259/*************************************************************************
4260 * Light (thinklight) subdriver
4261 */
1da177e4 4262
e0c7dfe7
HMH		 4263TPACPI_HANDLE(lght, root, "\\LGHT"); /* A21e, A2xm/p, T20-22, X20-21 */
4264TPACPI_HANDLE(ledb, ec, "LEDB"); /* G4x */
56b6aeb0 4265
4fa6811b
HMH		 4266static int light_get_status(void)
4267{
4268 int status = 0;
4269
4270 if (tp_features.light_status) {
4271 if (!acpi_evalf(ec_handle, &status, "KBLT", "d"))
4272 return -EIO;
4273 return (!!status);
4274 }
4275
4276 return -ENXIO;
4277}
4278
4279static int light_set_status(int status)
4280{
4281 int rc;
4282
4283 if (tp_features.light) {
4284 if (cmos_handle) {
4285 rc = acpi_evalf(cmos_handle, NULL, NULL, "vd",
4286 (status)?
4287 TP_CMOS_THINKLIGHT_ON :
4288 TP_CMOS_THINKLIGHT_OFF);
4289 } else {
4290 rc = acpi_evalf(lght_handle, NULL, NULL, "vd",
4291 (status)? 1 : 0);
4292 }
4293 return (rc)? 0 : -EIO;
4294 }
4295
4296 return -ENXIO;
4297}
4298
e306501d
HMH		 4299static void light_set_status_worker(struct work_struct *work)
4300{
4301 struct tpacpi_led_classdev *data =
4302 container_of(work, struct tpacpi_led_classdev, work);
4303
4304 if (likely(tpacpi_lifecycle == TPACPI_LIFE_RUNNING))
75bd3bf2 4305 light_set_status((data->new_state != TPACPI_LED_OFF));
e306501d
HMH		 4306}
4307
4308static void light_sysfs_set(struct led_classdev *led_cdev,
4309 enum led_brightness brightness)
4310{
4311 struct tpacpi_led_classdev *data =
4312 container_of(led_cdev,
4313 struct tpacpi_led_classdev,
4314 led_classdev);
75bd3bf2
HMH		 4315 data->new_state = (brightness != LED_OFF) ?
4316 TPACPI_LED_ON : TPACPI_LED_OFF;
e0e3c061 4317 queue_work(tpacpi_wq, &data->work);
e306501d
HMH		 4318}
4319
4320static enum led_brightness light_sysfs_get(struct led_classdev *led_cdev)
4321{
4322 return (light_get_status() == 1)? LED_FULL : LED_OFF;
4323}
4324
4325static struct tpacpi_led_classdev tpacpi_led_thinklight = {
4326 .led_classdev = {
4327 .name = "tpacpi::thinklight",
4328 .brightness_set = &light_sysfs_set,
4329 .brightness_get = &light_sysfs_get,
4330 }
4331};
4332
a5763f22 4333static int __init light_init(struct ibm_init_struct *iibm)
1da177e4 4334{
9c0a76e1 4335 int rc;
e306501d 4336
fe08bc4b
HMH		 4337 vdbg_printk(TPACPI_DBG_INIT, "initializing light subdriver\n");
4338
e0c7dfe7
HMH		 4339 TPACPI_ACPIHANDLE_INIT(ledb);
4340 TPACPI_ACPIHANDLE_INIT(lght);
4341 TPACPI_ACPIHANDLE_INIT(cmos);
e306501d 4342 INIT_WORK(&tpacpi_led_thinklight.work, light_set_status_worker);
5fba344c 4343
78f81cc4 4344 /* light not supported on 570, 600e/x, 770e, 770x, G4x, R30, R31 */
d8fd94d9 4345 tp_features.light = (cmos_handle || lght_handle) && !ledb_handle;
78f81cc4 4346
d8fd94d9 4347 if (tp_features.light)
78f81cc4
BD		 4348 /* light status not supported on
4349 570, 600e/x, 770e, 770x, G4x, R30, R31, R32, X20 */
d8fd94d9
HMH		 4350 tp_features.light_status =
4351 acpi_evalf(ec_handle, NULL, "KBLT", "qv");
1da177e4 4352
9c0a76e1
HMH		 4353 vdbg_printk(TPACPI_DBG_INIT, "light is %s, light status is %s\n",
4354 str_supported(tp_features.light),
4355 str_supported(tp_features.light_status));
fe08bc4b 4356
9c0a76e1
HMH		 4357 if (!tp_features.light)
4358 return 1;
4359
4360 rc = led_classdev_register(&tpacpi_pdev->dev,
4361 &tpacpi_led_thinklight.led_classdev);
e306501d
HMH		 4362
4363 if (rc < 0) {
4364 tp_features.light = 0;
4365 tp_features.light_status = 0;
9c0a76e1
HMH		 4366 } else {
4367 rc = 0;
e306501d 4368 }
9c0a76e1 4369
e306501d
HMH		 4370 return rc;
4371}
4372
4373static void light_exit(void)
4374{
4375 led_classdev_unregister(&tpacpi_led_thinklight.led_classdev);
4376 if (work_pending(&tpacpi_led_thinklight.work))
e0e3c061 4377 flush_workqueue(tpacpi_wq);
1da177e4
LT		 4378}
4379
78f81cc4 4380static int light_read(char *p)
1da177e4
LT		 4381{
4382 int len = 0;
4fa6811b 4383 int status;
1da177e4 4384
d8fd94d9 4385 if (!tp_features.light) {
78f81cc4 4386 len += sprintf(p + len, "status:\t\tnot supported\n");
d8fd94d9 4387 } else if (!tp_features.light_status) {
78f81cc4
BD		 4388 len += sprintf(p + len, "status:\t\tunknown\n");
4389 len += sprintf(p + len, "commands:\ton, off\n");
4390 } else {
4fa6811b
HMH		 4391 status = light_get_status();
4392 if (status < 0)
4393 return status;
1da177e4 4394 len += sprintf(p + len, "status:\t\t%s\n", onoff(status, 0));
78f81cc4
BD		 4395 len += sprintf(p + len, "commands:\ton, off\n");
4396 }
1da177e4
LT		 4397
4398 return len;
4399}
4400
78f81cc4 4401static int light_write(char *buf)
1da177e4 4402{
1da177e4 4403 char *cmd;
4fa6811b 4404 int newstatus = 0;
78f81cc4 4405
d8fd94d9 4406 if (!tp_features.light)
78f81cc4
BD		 4407 return -ENODEV;
4408
1da177e4
LT		 4409 while ((cmd = next_cmd(&buf))) {
4410 if (strlencmp(cmd, "on") == 0) {
4fa6811b 4411 newstatus = 1;
1da177e4 4412 } else if (strlencmp(cmd, "off") == 0) {
4fa6811b 4413 newstatus = 0;
1da177e4
LT		 4414 } else
4415 return -EINVAL;
1da177e4
LT		 4416 }
4417
4fa6811b 4418 return light_set_status(newstatus);
1da177e4
LT		 4419}
4420
a5763f22
HMH		 4421static struct ibm_struct light_driver_data = {
4422 .name = "light",
4423 .read = light_read,
4424 .write = light_write,
e306501d 4425 .exit = light_exit,
a5763f22
HMH		 4426};
4427
56b6aeb0
HMH		 4428/*************************************************************************
4429 * CMOS subdriver
4430 */
4431
b616004c
HMH		 4432/* sysfs cmos_command -------------------------------------------------- */
4433static ssize_t cmos_command_store(struct device *dev,
4434 struct device_attribute *attr,
4435 const char *buf, size_t count)
4436{
4437 unsigned long cmos_cmd;
4438 int res;
4439
4440 if (parse_strtoul(buf, 21, &cmos_cmd))
4441 return -EINVAL;
4442
4443 res = issue_thinkpad_cmos_command(cmos_cmd);
4444 return (res)? res : count;
4445}
4446
4447static struct device_attribute dev_attr_cmos_command =
4448 __ATTR(cmos_command, S_IWUSR, NULL, cmos_command_store);
4449
4450/* --------------------------------------------------------------------- */
4451
a5763f22 4452static int __init cmos_init(struct ibm_init_struct *iibm)
5fba344c 4453{
b616004c
HMH		 4454 int res;
4455
fe08bc4b
HMH		 4456 vdbg_printk(TPACPI_DBG_INIT,
4457 "initializing cmos commands subdriver\n");
4458
e0c7dfe7 4459 TPACPI_ACPIHANDLE_INIT(cmos);
5fba344c 4460
fe08bc4b
HMH		 4461 vdbg_printk(TPACPI_DBG_INIT, "cmos commands are %s\n",
4462 str_supported(cmos_handle != NULL));
b616004c
HMH		 4463
4464 res = device_create_file(&tpacpi_pdev->dev, &dev_attr_cmos_command);
4465 if (res)
4466 return res;
4467
5fba344c
HMH		 4468 return (cmos_handle)? 0 : 1;
4469}
4470
b616004c
HMH		 4471static void cmos_exit(void)
4472{
4473 device_remove_file(&tpacpi_pdev->dev, &dev_attr_cmos_command);
4474}
4475
78f81cc4 4476static int cmos_read(char *p)
1da177e4
LT		 4477{
4478 int len = 0;
4479
78f81cc4
BD		 4480 /* cmos not supported on 570, 600e/x, 770e, 770x, A21e, A2xm/p,
4481 R30, R31, T20-22, X20-21 */
1da177e4
LT		 4482 if (!cmos_handle)
4483 len += sprintf(p + len, "status:\t\tnot supported\n");
4484 else {
4485 len += sprintf(p + len, "status:\t\tsupported\n");
78f81cc4 4486 len += sprintf(p + len, "commands:\t<cmd> (<cmd> is 0-21)\n");
1da177e4
LT		 4487 }
4488
4489 return len;
4490}
4491
78f81cc4 4492static int cmos_write(char *buf)
1da177e4
LT		 4493{
4494 char *cmd;
c9bea99c 4495 int cmos_cmd, res;
1da177e4
LT		 4496
4497 while ((cmd = next_cmd(&buf))) {
78f81cc4
BD		 4498 if (sscanf(cmd, "%u", &cmos_cmd) == 1 &&
4499 cmos_cmd >= 0 && cmos_cmd <= 21) {
1da177e4
LT		 4500 /* cmos_cmd set */
4501 } else
4502 return -EINVAL;
4503
c9bea99c
HMH		 4504 res = issue_thinkpad_cmos_command(cmos_cmd);
4505 if (res)
4506 return res;
1da177e4
LT		 4507 }
4508
4509 return 0;
78f81cc4
BD		 4510}
4511
a5763f22
HMH		 4512static struct ibm_struct cmos_driver_data = {
4513 .name = "cmos",
4514 .read = cmos_read,
4515 .write = cmos_write,
b616004c 4516 .exit = cmos_exit,
a5763f22 4517};
56b6aeb0
HMH		 4518
4519/*************************************************************************
4520 * LED subdriver
4521 */
4522
f74a27d4
HMH		 4523enum led_access_mode {
4524 TPACPI_LED_NONE = 0,
4525 TPACPI_LED_570, /* 570 */
4526 TPACPI_LED_OLD, /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20-21 */
4527 TPACPI_LED_NEW, /* all others */
4528};
4529
4530enum { /* For TPACPI_LED_OLD */
4531 TPACPI_LED_EC_HLCL = 0x0c, /* EC reg to get led to power on */
4532 TPACPI_LED_EC_HLBL = 0x0d, /* EC reg to blink a lit led */
4533 TPACPI_LED_EC_HLMS = 0x0e, /* EC reg to select led to command */
4534};
4535
9a8e1738 4536static enum led_access_mode led_supported;
78f81cc4 4537
e0c7dfe7 4538TPACPI_HANDLE(led, ec, "SLED", /* 570 */
35ff8b9f
HMH		 4539 "SYSL", /* 600e/x, 770e, 770x, A21e, A2xm/p, */
4540 /* T20-22, X20-21 */
56b6aeb0
HMH		 4541 "LED", /* all others */
4542 ); /* R30, R31 */
4543
f21179a4 4544#define TPACPI_LED_NUMLEDS 16
af116101
HMH		 4545static struct tpacpi_led_classdev *tpacpi_leds;
4546static enum led_status_t tpacpi_led_state_cache[TPACPI_LED_NUMLEDS];
e3aa51fe 4547static const char * const tpacpi_led_names[TPACPI_LED_NUMLEDS] = {
af116101
HMH		 4548 /* there's a limit of 19 chars + NULL before 2.6.26 */
4549 "tpacpi::power",
4550 "tpacpi:orange:batt",
4551 "tpacpi:green:batt",
4552 "tpacpi::dock_active",
4553 "tpacpi::bay_active",
4554 "tpacpi::dock_batt",
4555 "tpacpi::unknown_led",
4556 "tpacpi::standby",
f21179a4
HMH		 4557 "tpacpi::dock_status1",
4558 "tpacpi::dock_status2",
4559 "tpacpi::unknown_led2",
4560 "tpacpi::unknown_led3",
4561 "tpacpi::thinkvantage",
af116101 4562};
f21179a4 4563#define TPACPI_SAFE_LEDS 0x1081U
a4d5effc
HMH		 4564
4565static inline bool tpacpi_is_led_restricted(const unsigned int led)
4566{
4567#ifdef CONFIG_THINKPAD_ACPI_UNSAFE_LEDS
4568 return false;
4569#else
f21179a4 4570 return (1U & (TPACPI_SAFE_LEDS >> led)) == 0;
a4d5effc
HMH		 4571#endif
4572}
af116101 4573
24e45bbe 4574static int led_get_status(const unsigned int led)
4fa6811b
HMH		 4575{
4576 int status;
af116101 4577 enum led_status_t led_s;
4fa6811b
HMH		 4578
4579 switch (led_supported) {
4580 case TPACPI_LED_570:
4581 if (!acpi_evalf(ec_handle,
4582 &status, "GLED", "dd", 1 << led))
4583 return -EIO;
af116101 4584 led_s = (status == 0)?
4fa6811b
HMH		 4585 TPACPI_LED_OFF :
4586 ((status == 1)?
4587 TPACPI_LED_ON :
4588 TPACPI_LED_BLINK);
af116101
HMH		 4589 tpacpi_led_state_cache[led] = led_s;
4590 return led_s;
4fa6811b
HMH		 4591 default:
4592 return -ENXIO;
4593 }
4594
4595 /* not reached */
4596}
4597
24e45bbe
HMH		 4598static int led_set_status(const unsigned int led,
4599 const enum led_status_t ledstatus)
4fa6811b
HMH		 4600{
4601 /* off, on, blink. Index is led_status_t */
24e45bbe
HMH		 4602 static const unsigned int led_sled_arg1[] = { 0, 1, 3 };
4603 static const unsigned int led_led_arg1[] = { 0, 0x80, 0xc0 };
4fa6811b
HMH		 4604
4605 int rc = 0;
4606
4607 switch (led_supported) {
4608 case TPACPI_LED_570:
24e45bbe 4609 /* 570 */
a4d5effc 4610 if (unlikely(led > 7))
24e45bbe 4611 return -EINVAL;
a4d5effc
HMH		 4612 if (unlikely(tpacpi_is_led_restricted(led)))
4613 return -EPERM;
24e45bbe
HMH		 4614 if (!acpi_evalf(led_handle, NULL, NULL, "vdd",
4615 (1 << led), led_sled_arg1[ledstatus]))
4616 rc = -EIO;
4617 break;
4fa6811b 4618 case TPACPI_LED_OLD:
24e45bbe 4619 /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20 */
a4d5effc 4620 if (unlikely(led > 7))
24e45bbe 4621 return -EINVAL;
a4d5effc
HMH		 4622 if (unlikely(tpacpi_is_led_restricted(led)))
4623 return -EPERM;
24e45bbe
HMH		 4624 rc = ec_write(TPACPI_LED_EC_HLMS, (1 << led));
4625 if (rc >= 0)
4626 rc = ec_write(TPACPI_LED_EC_HLBL,
4627 (ledstatus == TPACPI_LED_BLINK) << led);
4628 if (rc >= 0)
4629 rc = ec_write(TPACPI_LED_EC_HLCL,
4630 (ledstatus != TPACPI_LED_OFF) << led);
4631 break;
4fa6811b 4632 case TPACPI_LED_NEW:
24e45bbe 4633 /* all others */
a4d5effc
HMH		 4634 if (unlikely(led >= TPACPI_LED_NUMLEDS))
4635 return -EINVAL;
4636 if (unlikely(tpacpi_is_led_restricted(led)))
4637 return -EPERM;
24e45bbe
HMH		 4638 if (!acpi_evalf(led_handle, NULL, NULL, "vdd",
4639 led, led_led_arg1[ledstatus]))
4640 rc = -EIO;
4641 break;
4fa6811b
HMH		 4642 default:
4643 rc = -ENXIO;
4644 }
4645
af116101
HMH		 4646 if (!rc)
4647 tpacpi_led_state_cache[led] = ledstatus;
4648
4649 return rc;
4650}
4651
af116101
HMH		 4652static void led_set_status_worker(struct work_struct *work)
4653{
4654 struct tpacpi_led_classdev *data =
4655 container_of(work, struct tpacpi_led_classdev, work);
4656
4657 if (likely(tpacpi_lifecycle == TPACPI_LIFE_RUNNING))
75bd3bf2 4658 led_set_status(data->led, data->new_state);
af116101
HMH		 4659}
4660
4661static void led_sysfs_set(struct led_classdev *led_cdev,
4662 enum led_brightness brightness)
4663{
4664 struct tpacpi_led_classdev *data = container_of(led_cdev,
4665 struct tpacpi_led_classdev, led_classdev);
4666
75bd3bf2
HMH		 4667 if (brightness == LED_OFF)
4668 data->new_state = TPACPI_LED_OFF;
4669 else if (tpacpi_led_state_cache[data->led] != TPACPI_LED_BLINK)
4670 data->new_state = TPACPI_LED_ON;
4671 else
4672 data->new_state = TPACPI_LED_BLINK;
4673
e0e3c061 4674 queue_work(tpacpi_wq, &data->work);
af116101
HMH		 4675}
4676
4677static int led_sysfs_blink_set(struct led_classdev *led_cdev,
4678 unsigned long *delay_on, unsigned long *delay_off)
4679{
4680 struct tpacpi_led_classdev *data = container_of(led_cdev,
4681 struct tpacpi_led_classdev, led_classdev);
4682
4683 /* Can we choose the flash rate? */
4684 if (*delay_on == 0 && *delay_off == 0) {
4685 /* yes. set them to the hardware blink rate (1 Hz) */
4686 *delay_on = 500; /* ms */
4687 *delay_off = 500; /* ms */
4688 } else if ((*delay_on != 500) || (*delay_off != 500))
4689 return -EINVAL;
4690
75bd3bf2 4691 data->new_state = TPACPI_LED_BLINK;
e0e3c061 4692 queue_work(tpacpi_wq, &data->work);
af116101
HMH		 4693
4694 return 0;
4695}
4696
4697static enum led_brightness led_sysfs_get(struct led_classdev *led_cdev)
4698{
4699 int rc;
4700
4701 struct tpacpi_led_classdev *data = container_of(led_cdev,
4702 struct tpacpi_led_classdev, led_classdev);
4703
4704 rc = led_get_status(data->led);
4705
4706 if (rc == TPACPI_LED_OFF || rc < 0)
4707 rc = LED_OFF; /* no error handling in led class :( */
4708 else
4709 rc = LED_FULL;
4710
4fa6811b
HMH		 4711 return rc;
4712}
4713
af116101
HMH		 4714static void led_exit(void)
4715{
4716 unsigned int i;
4717
4718 for (i = 0; i < TPACPI_LED_NUMLEDS; i++) {
4719 if (tpacpi_leds[i].led_classdev.name)
4720 led_classdev_unregister(&tpacpi_leds[i].led_classdev);
4721 }
4722
4723 kfree(tpacpi_leds);
af116101
HMH		 4724}
4725
a4d5effc
HMH		 4726static int __init tpacpi_init_led(unsigned int led)
4727{
4728 int rc;
4729
4730 tpacpi_leds[led].led = led;
4731
f21179a4
HMH		 4732 /* LEDs with no name don't get registered */
4733 if (!tpacpi_led_names[led])
4734 return 0;
4735
a4d5effc
HMH		 4736 tpacpi_leds[led].led_classdev.brightness_set = &led_sysfs_set;
4737 tpacpi_leds[led].led_classdev.blink_set = &led_sysfs_blink_set;
4738 if (led_supported == TPACPI_LED_570)
4739 tpacpi_leds[led].led_classdev.brightness_get =
4740 &led_sysfs_get;
4741
4742 tpacpi_leds[led].led_classdev.name = tpacpi_led_names[led];
4743
4744 INIT_WORK(&tpacpi_leds[led].work, led_set_status_worker);
4745
4746 rc = led_classdev_register(&tpacpi_pdev->dev,
4747 &tpacpi_leds[led].led_classdev);
4748 if (rc < 0)
4749 tpacpi_leds[led].led_classdev.name = NULL;
4750
4751 return rc;
4752}
4753
f21179a4
HMH		 4754static const struct tpacpi_quirk led_useful_qtable[] __initconst = {
4755 TPACPI_Q_IBM('1', 'E', 0x009f), /* A30 */
4756 TPACPI_Q_IBM('1', 'N', 0x009f), /* A31 */
4757 TPACPI_Q_IBM('1', 'G', 0x009f), /* A31 */
4758
4759 TPACPI_Q_IBM('1', 'I', 0x0097), /* T30 */
4760 TPACPI_Q_IBM('1', 'R', 0x0097), /* T40, T41, T42, R50, R51 */
4761 TPACPI_Q_IBM('7', '0', 0x0097), /* T43, R52 */
4762 TPACPI_Q_IBM('1', 'Y', 0x0097), /* T43 */
4763 TPACPI_Q_IBM('1', 'W', 0x0097), /* R50e */
4764 TPACPI_Q_IBM('1', 'V', 0x0097), /* R51 */
4765 TPACPI_Q_IBM('7', '8', 0x0097), /* R51e */
4766 TPACPI_Q_IBM('7', '6', 0x0097), /* R52 */
4767
4768 TPACPI_Q_IBM('1', 'K', 0x00bf), /* X30 */
4769 TPACPI_Q_IBM('1', 'Q', 0x00bf), /* X31, X32 */
4770 TPACPI_Q_IBM('1', 'U', 0x00bf), /* X40 */
4771 TPACPI_Q_IBM('7', '4', 0x00bf), /* X41 */
4772 TPACPI_Q_IBM('7', '5', 0x00bf), /* X41t */
4773
4774 TPACPI_Q_IBM('7', '9', 0x1f97), /* T60 (1) */
4775 TPACPI_Q_IBM('7', '7', 0x1f97), /* Z60* (1) */
4776 TPACPI_Q_IBM('7', 'F', 0x1f97), /* Z61* (1) */
4777 TPACPI_Q_IBM('7', 'B', 0x1fb7), /* X60 (1) */
4778
4779 /* (1) - may have excess leds enabled on MSB */
4780
4781 /* Defaults (order matters, keep last, don't reorder!) */
4782 { /* Lenovo */
4783 .vendor = PCI_VENDOR_ID_LENOVO,
4784 .bios = TPACPI_MATCH_ANY, .ec = TPACPI_MATCH_ANY,
4785 .quirks = 0x1fffU,
4786 },
4787 { /* IBM ThinkPads with no EC version string */
4788 .vendor = PCI_VENDOR_ID_IBM,
4789 .bios = TPACPI_MATCH_ANY, .ec = TPACPI_MATCH_UNKNOWN,
4790 .quirks = 0x00ffU,
4791 },
4792 { /* IBM ThinkPads with EC version string */
4793 .vendor = PCI_VENDOR_ID_IBM,
4794 .bios = TPACPI_MATCH_ANY, .ec = TPACPI_MATCH_ANY,
4795 .quirks = 0x00bfU,
4796 },
4797};
4798
4799#undef TPACPI_LEDQ_IBM
4800#undef TPACPI_LEDQ_LNV
4801
a5763f22 4802static int __init led_init(struct ibm_init_struct *iibm)
78f81cc4 4803{
af116101
HMH		 4804 unsigned int i;
4805 int rc;
f21179a4 4806 unsigned long useful_leds;
af116101 4807
fe08bc4b
HMH		 4808 vdbg_printk(TPACPI_DBG_INIT, "initializing LED subdriver\n");
4809
e0c7dfe7 4810 TPACPI_ACPIHANDLE_INIT(led);
5fba344c 4811
78f81cc4
BD		 4812 if (!led_handle)
4813 /* led not supported on R30, R31 */
efa27145 4814 led_supported = TPACPI_LED_NONE;
78f81cc4
BD		 4815 else if (strlencmp(led_path, "SLED") == 0)
4816 /* 570 */
efa27145 4817 led_supported = TPACPI_LED_570;
78f81cc4
BD		 4818 else if (strlencmp(led_path, "SYSL") == 0)
4819 /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20-21 */
efa27145 4820 led_supported = TPACPI_LED_OLD;
78f81cc4
BD		 4821 else
4822 /* all others */
efa27145 4823 led_supported = TPACPI_LED_NEW;
78f81cc4 4824
fe08bc4b
HMH		 4825 vdbg_printk(TPACPI_DBG_INIT, "LED commands are %s, mode %d\n",
4826 str_supported(led_supported), led_supported);
4827
f21179a4
HMH		 4828 if (led_supported == TPACPI_LED_NONE)
4829 return 1;
4830
af116101
HMH		 4831 tpacpi_leds = kzalloc(sizeof(*tpacpi_leds) * TPACPI_LED_NUMLEDS,
4832 GFP_KERNEL);
4833 if (!tpacpi_leds) {
4834 printk(TPACPI_ERR "Out of memory for LED data\n");
4835 return -ENOMEM;
4836 }
4837
f21179a4
HMH		 4838 useful_leds = tpacpi_check_quirks(led_useful_qtable,
4839 ARRAY_SIZE(led_useful_qtable));
4840
af116101 4841 for (i = 0; i < TPACPI_LED_NUMLEDS; i++) {
f21179a4
HMH		 4842 if (!tpacpi_is_led_restricted(i) &&
4843 test_bit(i, &useful_leds)) {
a4d5effc
HMH		 4844 rc = tpacpi_init_led(i);
4845 if (rc < 0) {
4846 led_exit();
4847 return rc;
4848 }
af116101
HMH		 4849 }
4850 }
4851
a4d5effc 4852#ifdef CONFIG_THINKPAD_ACPI_UNSAFE_LEDS
f21179a4
HMH		 4853 printk(TPACPI_NOTICE
4854 "warning: userspace override of important "
4855 "firmware LEDs is enabled\n");
a4d5effc 4856#endif
f21179a4 4857 return 0;
78f81cc4
BD		 4858}
4859
4fa6811b
HMH		 4860#define str_led_status(s) \
4861 ((s) == TPACPI_LED_OFF ? "off" : \
4862 ((s) == TPACPI_LED_ON ? "on" : "blinking"))
78f81cc4
BD		 4863
4864static int led_read(char *p)
1da177e4
LT		 4865{
4866 int len = 0;
4867
78f81cc4
BD		 4868 if (!led_supported) {
4869 len += sprintf(p + len, "status:\t\tnot supported\n");
4870 return len;
4871 }
4872 len += sprintf(p + len, "status:\t\tsupported\n");
4873
efa27145 4874 if (led_supported == TPACPI_LED_570) {
78f81cc4
BD		 4875 /* 570 */
4876 int i, status;
4877 for (i = 0; i < 8; i++) {
4fa6811b
HMH		 4878 status = led_get_status(i);
4879 if (status < 0)
78f81cc4
BD		 4880 return -EIO;
4881 len += sprintf(p + len, "%d:\t\t%s\n",
4fa6811b 4882 i, str_led_status(status));
78f81cc4
BD		 4883 }
4884 }
4885
1da177e4 4886 len += sprintf(p + len, "commands:\t"
f21179a4 4887 "<led> on, <led> off, <led> blink (<led> is 0-15)\n");
1da177e4
LT		 4888
4889 return len;
4890}
4891
78f81cc4 4892static int led_write(char *buf)
1da177e4
LT		 4893{
4894 char *cmd;
4fa6811b
HMH		 4895 int led, rc;
4896 enum led_status_t s;
78f81cc4
BD		 4897
4898 if (!led_supported)
4899 return -ENODEV;
1da177e4
LT		 4900
4901 while ((cmd = next_cmd(&buf))) {
f21179a4 4902 if (sscanf(cmd, "%d", &led) != 1 || led < 0 || led > 15)
1da177e4
LT		 4903 return -EINVAL;
4904
78f81cc4 4905 if (strstr(cmd, "off")) {
4fa6811b 4906 s = TPACPI_LED_OFF;
1da177e4 4907 } else if (strstr(cmd, "on")) {
4fa6811b 4908 s = TPACPI_LED_ON;
78f81cc4 4909 } else if (strstr(cmd, "blink")) {
4fa6811b 4910 s = TPACPI_LED_BLINK;
78f81cc4 4911 } else {
4fa6811b 4912 return -EINVAL;
78f81cc4 4913 }
4fa6811b
HMH		 4914
4915 rc = led_set_status(led, s);
4916 if (rc < 0)
4917 return rc;
78f81cc4
BD		 4918 }
4919
4920 return 0;
4921}
4922
a5763f22
HMH		 4923static struct ibm_struct led_driver_data = {
4924 .name = "led",
4925 .read = led_read,
4926 .write = led_write,
af116101 4927 .exit = led_exit,
a5763f22
HMH		 4928};
4929
56b6aeb0
HMH		 4930/*************************************************************************
4931 * Beep subdriver
4932 */
4933
e0c7dfe7 4934TPACPI_HANDLE(beep, ec, "BEEP"); /* all except R30, R31 */
56b6aeb0 4935
60201732
HMH		 4936#define TPACPI_BEEP_Q1 0x0001
4937
4938static const struct tpacpi_quirk beep_quirk_table[] __initconst = {
4939 TPACPI_Q_IBM('I', 'M', TPACPI_BEEP_Q1), /* 570 */
4940 TPACPI_Q_IBM('I', 'U', TPACPI_BEEP_Q1), /* 570E - unverified */
4941};
4942
a5763f22 4943static int __init beep_init(struct ibm_init_struct *iibm)
5fba344c 4944{
60201732
HMH		 4945 unsigned long quirks;
4946
fe08bc4b
HMH		 4947 vdbg_printk(TPACPI_DBG_INIT, "initializing beep subdriver\n");
4948
e0c7dfe7 4949 TPACPI_ACPIHANDLE_INIT(beep);
5fba344c 4950
fe08bc4b
HMH		 4951 vdbg_printk(TPACPI_DBG_INIT, "beep is %s\n",
4952 str_supported(beep_handle != NULL));
4953
60201732
HMH		 4954 quirks = tpacpi_check_quirks(beep_quirk_table,
4955 ARRAY_SIZE(beep_quirk_table));
4956
4957 tp_features.beep_needs_two_args = !!(quirks & TPACPI_BEEP_Q1);
4958
5fba344c
HMH		 4959 return (beep_handle)? 0 : 1;
4960}
4961
78f81cc4
BD		 4962static int beep_read(char *p)
4963{
4964 int len = 0;
4965
4966 if (!beep_handle)
4967 len += sprintf(p + len, "status:\t\tnot supported\n");
4968 else {
4969 len += sprintf(p + len, "status:\t\tsupported\n");
4970 len += sprintf(p + len, "commands:\t<cmd> (<cmd> is 0-17)\n");
4971 }
4972
4973 return len;
4974}
4975
4976static int beep_write(char *buf)
4977{
4978 char *cmd;
4979 int beep_cmd;
4980
4981 if (!beep_handle)
4982 return -ENODEV;
4983
4984 while ((cmd = next_cmd(&buf))) {
4985 if (sscanf(cmd, "%u", &beep_cmd) == 1 &&
4986 beep_cmd >= 0 && beep_cmd <= 17) {
4987 /* beep_cmd set */
4988 } else
4989 return -EINVAL;
60201732
HMH		 4990 if (tp_features.beep_needs_two_args) {
4991 if (!acpi_evalf(beep_handle, NULL, NULL, "vdd",
4992 beep_cmd, 0))
4993 return -EIO;
4994 } else {
4995 if (!acpi_evalf(beep_handle, NULL, NULL, "vd",
4996 beep_cmd))
4997 return -EIO;
4998 }
78f81cc4
BD		 4999 }
5000
5001 return 0;
5002}
5003
a5763f22
HMH		 5004static struct ibm_struct beep_driver_data = {
5005 .name = "beep",
5006 .read = beep_read,
5007 .write = beep_write,
5008};
5009
56b6aeb0
HMH		 5010/*************************************************************************
5011 * Thermal subdriver
5012 */
78f81cc4 5013
f74a27d4
HMH		 5014enum thermal_access_mode {
5015 TPACPI_THERMAL_NONE = 0, /* No thermal support */
5016 TPACPI_THERMAL_ACPI_TMP07, /* Use ACPI TMP0-7 */
5017 TPACPI_THERMAL_ACPI_UPDT, /* Use ACPI TMP0-7 with UPDT */
5018 TPACPI_THERMAL_TPEC_8, /* Use ACPI EC regs, 8 sensors */
5019 TPACPI_THERMAL_TPEC_16, /* Use ACPI EC regs, 16 sensors */
5020};
5021
5022enum { /* TPACPI_THERMAL_TPEC_* */
5023 TP_EC_THERMAL_TMP0 = 0x78, /* ACPI EC regs TMP 0..7 */
5024 TP_EC_THERMAL_TMP8 = 0xC0, /* ACPI EC regs TMP 8..15 */
5025 TP_EC_THERMAL_TMP_NA = -128, /* ACPI EC sensor not available */
5026};
5027
5028#define TPACPI_MAX_THERMAL_SENSORS 16 /* Max thermal sensors supported */
5029struct ibm_thermal_sensors_struct {
5030 s32 temp[TPACPI_MAX_THERMAL_SENSORS];
5031};
5032
a26f878a 5033static enum thermal_access_mode thermal_read_mode;
78f81cc4 5034
b21a15f6
HMH		 5035/* idx is zero-based */
5036static int thermal_get_sensor(int idx, s32 *value)
5037{
5038 int t;
5039 s8 tmp;
5040 char tmpi[5];
5041
5042 t = TP_EC_THERMAL_TMP0;
5043
5044 switch (thermal_read_mode) {
5045#if TPACPI_MAX_THERMAL_SENSORS >= 16
5046 case TPACPI_THERMAL_TPEC_16:
5047 if (idx >= 8 && idx <= 15) {
5048 t = TP_EC_THERMAL_TMP8;
5049 idx -= 8;
5050 }
5051 /* fallthrough */
5052#endif
5053 case TPACPI_THERMAL_TPEC_8:
5054 if (idx <= 7) {
5055 if (!acpi_ec_read(t + idx, &tmp))
5056 return -EIO;
5057 *value = tmp * 1000;
5058 return 0;
5059 }
5060 break;
5061
5062 case TPACPI_THERMAL_ACPI_UPDT:
5063 if (idx <= 7) {
5064 snprintf(tmpi, sizeof(tmpi), "TMP%c", '0' + idx);
5065 if (!acpi_evalf(ec_handle, NULL, "UPDT", "v"))
5066 return -EIO;
5067 if (!acpi_evalf(ec_handle, &t, tmpi, "d"))
5068 return -EIO;
5069 *value = (t - 2732) * 100;
5070 return 0;
5071 }
5072 break;
5073
5074 case TPACPI_THERMAL_ACPI_TMP07:
5075 if (idx <= 7) {
5076 snprintf(tmpi, sizeof(tmpi), "TMP%c", '0' + idx);
5077 if (!acpi_evalf(ec_handle, &t, tmpi, "d"))
5078 return -EIO;
5079 if (t > 127 || t < -127)
5080 t = TP_EC_THERMAL_TMP_NA;
5081 *value = t * 1000;
5082 return 0;
5083 }
5084 break;
5085
5086 case TPACPI_THERMAL_NONE:
5087 default:
5088 return -ENOSYS;
5089 }
5090
5091 return -EINVAL;
5092}
5093
5094static int thermal_get_sensors(struct ibm_thermal_sensors_struct *s)
5095{
5096 int res, i;
5097 int n;
5098
5099 n = 8;
5100 i = 0;
5101
5102 if (!s)
5103 return -EINVAL;
5104
5105 if (thermal_read_mode == TPACPI_THERMAL_TPEC_16)
5106 n = 16;
5107
35ff8b9f 5108 for (i = 0 ; i < n; i++) {
b21a15f6
HMH		 5109 res = thermal_get_sensor(i, &s->temp[i]);
5110 if (res)
5111 return res;
5112 }
5113
5114 return n;
5115}
f74a27d4 5116
2c37aa4e
HMH		 5117/* sysfs temp##_input -------------------------------------------------- */
5118
5119static ssize_t thermal_temp_input_show(struct device *dev,
5120 struct device_attribute *attr,
5121 char *buf)
5122{
5123 struct sensor_device_attribute *sensor_attr =
5124 to_sensor_dev_attr(attr);
5125 int idx = sensor_attr->index;
5126 s32 value;
5127 int res;
5128
5129 res = thermal_get_sensor(idx, &value);
5130 if (res)
5131 return res;
5132 if (value == TP_EC_THERMAL_TMP_NA * 1000)
5133 return -ENXIO;
5134
5135 return snprintf(buf, PAGE_SIZE, "%d\n", value);
5136}
5137
5138#define THERMAL_SENSOR_ATTR_TEMP(_idxA, _idxB) \
35ff8b9f
HMH		 5139 SENSOR_ATTR(temp##_idxA##_input, S_IRUGO, \
5140 thermal_temp_input_show, NULL, _idxB)
2c37aa4e
HMH		 5141
5142static struct sensor_device_attribute sensor_dev_attr_thermal_temp_input[] = {
5143 THERMAL_SENSOR_ATTR_TEMP(1, 0),
5144 THERMAL_SENSOR_ATTR_TEMP(2, 1),
5145 THERMAL_SENSOR_ATTR_TEMP(3, 2),
5146 THERMAL_SENSOR_ATTR_TEMP(4, 3),
5147 THERMAL_SENSOR_ATTR_TEMP(5, 4),
5148 THERMAL_SENSOR_ATTR_TEMP(6, 5),
5149 THERMAL_SENSOR_ATTR_TEMP(7, 6),
5150 THERMAL_SENSOR_ATTR_TEMP(8, 7),
5151 THERMAL_SENSOR_ATTR_TEMP(9, 8),
5152 THERMAL_SENSOR_ATTR_TEMP(10, 9),
5153 THERMAL_SENSOR_ATTR_TEMP(11, 10),
5154 THERMAL_SENSOR_ATTR_TEMP(12, 11),
5155 THERMAL_SENSOR_ATTR_TEMP(13, 12),
5156 THERMAL_SENSOR_ATTR_TEMP(14, 13),
5157 THERMAL_SENSOR_ATTR_TEMP(15, 14),
5158 THERMAL_SENSOR_ATTR_TEMP(16, 15),
5159};
5160
5161#define THERMAL_ATTRS(X) \
5162 &sensor_dev_attr_thermal_temp_input[X].dev_attr.attr
5163
5164static struct attribute *thermal_temp_input_attr[] = {
5165 THERMAL_ATTRS(8),
5166 THERMAL_ATTRS(9),
5167 THERMAL_ATTRS(10),
5168 THERMAL_ATTRS(11),
5169 THERMAL_ATTRS(12),
5170 THERMAL_ATTRS(13),
5171 THERMAL_ATTRS(14),
5172 THERMAL_ATTRS(15),
5173 THERMAL_ATTRS(0),
5174 THERMAL_ATTRS(1),
5175 THERMAL_ATTRS(2),
5176 THERMAL_ATTRS(3),
5177 THERMAL_ATTRS(4),
5178 THERMAL_ATTRS(5),
5179 THERMAL_ATTRS(6),
5180 THERMAL_ATTRS(7),
5181 NULL
5182};
5183
5184static const struct attribute_group thermal_temp_input16_group = {
5185 .attrs = thermal_temp_input_attr
5186};
5187
5188static const struct attribute_group thermal_temp_input8_group = {
5189 .attrs = &thermal_temp_input_attr[8]
5190};
5191
5192#undef THERMAL_SENSOR_ATTR_TEMP
5193#undef THERMAL_ATTRS
5194
5195/* --------------------------------------------------------------------- */
5196
a5763f22 5197static int __init thermal_init(struct ibm_init_struct *iibm)
78f81cc4 5198{
60eb0b35
HMH		 5199 u8 t, ta1, ta2;
5200 int i;
5fba344c 5201 int acpi_tmp7;
2c37aa4e 5202 int res;
5fba344c 5203
fe08bc4b
HMH		 5204 vdbg_printk(TPACPI_DBG_INIT, "initializing thermal subdriver\n");
5205
5fba344c 5206 acpi_tmp7 = acpi_evalf(ec_handle, NULL, "TMP7", "qv");
60eb0b35 5207
3d6f99ca 5208 if (thinkpad_id.ec_model) {
60eb0b35
HMH		 5209 /*
5210 * Direct EC access mode: sensors at registers
5211 * 0x78-0x7F, 0xC0-0xC7. Registers return 0x00 for
5212 * non-implemented, thermal sensors return 0x80 when
5213 * not available
5214 */
78f81cc4 5215
60eb0b35
HMH		 5216 ta1 = ta2 = 0;
5217 for (i = 0; i < 8; i++) {
04cc862c 5218 if (acpi_ec_read(TP_EC_THERMAL_TMP0 + i, &t)) {
60eb0b35
HMH		 5219 ta1 |= t;
5220 } else {
5221 ta1 = 0;
5222 break;
5223 }
04cc862c 5224 if (acpi_ec_read(TP_EC_THERMAL_TMP8 + i, &t)) {
60eb0b35
HMH		 5225 ta2 |= t;
5226 } else {
5227 ta1 = 0;
5228 break;
5229 }
5230 }
5231 if (ta1 == 0) {
5232 /* This is sheer paranoia, but we handle it anyway */
5233 if (acpi_tmp7) {
e0c7dfe7 5234 printk(TPACPI_ERR
60eb0b35 5235 "ThinkPad ACPI EC access misbehaving, "
35ff8b9f
HMH		 5236 "falling back to ACPI TMPx access "
5237 "mode\n");
efa27145 5238 thermal_read_mode = TPACPI_THERMAL_ACPI_TMP07;
60eb0b35 5239 } else {
e0c7dfe7 5240 printk(TPACPI_ERR
60eb0b35
HMH		 5241 "ThinkPad ACPI EC access misbehaving, "
5242 "disabling thermal sensors access\n");
efa27145 5243 thermal_read_mode = TPACPI_THERMAL_NONE;
60eb0b35
HMH		 5244 }
5245 } else {
5246 thermal_read_mode =
5247 (ta2 != 0) ?
efa27145 5248 TPACPI_THERMAL_TPEC_16 : TPACPI_THERMAL_TPEC_8;
60eb0b35
HMH		 5249 }
5250 } else if (acpi_tmp7) {
a26f878a
HMH		 5251 if (acpi_evalf(ec_handle, NULL, "UPDT", "qv")) {
5252 /* 600e/x, 770e, 770x */
efa27145 5253 thermal_read_mode = TPACPI_THERMAL_ACPI_UPDT;
a26f878a
HMH		 5254 } else {
5255 /* Standard ACPI TMPx access, max 8 sensors */
efa27145 5256 thermal_read_mode = TPACPI_THERMAL_ACPI_TMP07;
a26f878a
HMH		 5257 }
5258 } else {
5259 /* temperatures not supported on 570, G4x, R30, R31, R32 */
efa27145 5260 thermal_read_mode = TPACPI_THERMAL_NONE;
a26f878a 5261 }
78f81cc4 5262
fe08bc4b
HMH		 5263 vdbg_printk(TPACPI_DBG_INIT, "thermal is %s, mode %d\n",
5264 str_supported(thermal_read_mode != TPACPI_THERMAL_NONE),
5265 thermal_read_mode);
5266
35ff8b9f 5267 switch (thermal_read_mode) {
2c37aa4e 5268 case TPACPI_THERMAL_TPEC_16:
7fd40029 5269 res = sysfs_create_group(&tpacpi_sensors_pdev->dev.kobj,
2c37aa4e
HMH		 5270 &thermal_temp_input16_group);
5271 if (res)
5272 return res;
5273 break;
5274 case TPACPI_THERMAL_TPEC_8:
5275 case TPACPI_THERMAL_ACPI_TMP07:
5276 case TPACPI_THERMAL_ACPI_UPDT:
7fd40029 5277 res = sysfs_create_group(&tpacpi_sensors_pdev->dev.kobj,
2c37aa4e
HMH		 5278 &thermal_temp_input8_group);
5279 if (res)
5280 return res;
5281 break;
5282 case TPACPI_THERMAL_NONE:
5283 default:
5284 return 1;
5285 }
5286
5287 return 0;
5288}
5289
5290static void thermal_exit(void)
5291{
35ff8b9f 5292 switch (thermal_read_mode) {
2c37aa4e 5293 case TPACPI_THERMAL_TPEC_16:
7fd40029 5294 sysfs_remove_group(&tpacpi_sensors_pdev->dev.kobj,
2c37aa4e
HMH		 5295 &thermal_temp_input16_group);
5296 break;
5297 case TPACPI_THERMAL_TPEC_8:
5298 case TPACPI_THERMAL_ACPI_TMP07:
5299 case TPACPI_THERMAL_ACPI_UPDT:
7fd40029 5300 sysfs_remove_group(&tpacpi_sensors_pdev->dev.kobj,
2c37aa4e
HMH		 5301 &thermal_temp_input16_group);
5302 break;
5303 case TPACPI_THERMAL_NONE:
5304 default:
5305 break;
5306 }
78f81cc4
BD		 5307}
5308
a26f878a
HMH		 5309static int thermal_read(char *p)
5310{
5311 int len = 0;
5312 int n, i;
5313 struct ibm_thermal_sensors_struct t;
5314
5315 n = thermal_get_sensors(&t);
5316 if (unlikely(n < 0))
5317 return n;
5318
5319 len += sprintf(p + len, "temperatures:\t");
5320
5321 if (n > 0) {
5322 for (i = 0; i < (n - 1); i++)
5323 len += sprintf(p + len, "%d ", t.temp[i] / 1000);
5324 len += sprintf(p + len, "%d\n", t.temp[i] / 1000);
5325 } else
5326 len += sprintf(p + len, "not supported\n");
78f81cc4
BD		 5327
5328 return len;
5329}
5330
a5763f22
HMH		 5331static struct ibm_struct thermal_driver_data = {
5332 .name = "thermal",
5333 .read = thermal_read,
2c37aa4e 5334 .exit = thermal_exit,
a5763f22
HMH		 5335};
5336
56b6aeb0
HMH		 5337/*************************************************************************
5338 * EC Dump subdriver
5339 */
5340
78f81cc4
BD		 5341static u8 ecdump_regs[256];
5342
5343static int ecdump_read(char *p)
5344{
5345 int len = 0;
5346 int i, j;
5347 u8 v;
5348
5349 len += sprintf(p + len, "EC "
5350 " +00 +01 +02 +03 +04 +05 +06 +07"
5351 " +08 +09 +0a +0b +0c +0d +0e +0f\n");
5352 for (i = 0; i < 256; i += 16) {
5353 len += sprintf(p + len, "EC 0x%02x:", i);
5354 for (j = 0; j < 16; j++) {
5355 if (!acpi_ec_read(i + j, &v))
5356 break;
5357 if (v != ecdump_regs[i + j])
5358 len += sprintf(p + len, " *%02x", v);
5359 else
5360 len += sprintf(p + len, " %02x", v);
5361 ecdump_regs[i + j] = v;
5362 }
5363 len += sprintf(p + len, "\n");
5364 if (j != 16)
5365 break;
5366 }
5367
5368 /* These are way too dangerous to advertise openly... */
5369#if 0
5370 len += sprintf(p + len, "commands:\t0x<offset> 0x<value>"
5371 " (<offset> is 00-ff, <value> is 00-ff)\n");
5372 len += sprintf(p + len, "commands:\t0x<offset> <value> "
5373 " (<offset> is 00-ff, <value> is 0-255)\n");
5374#endif
5375 return len;
5376}
5377
5378static int ecdump_write(char *buf)
5379{
5380 char *cmd;
5381 int i, v;
5382
5383 while ((cmd = next_cmd(&buf))) {
5384 if (sscanf(cmd, "0x%x 0x%x", &i, &v) == 2) {
5385 /* i and v set */
5386 } else if (sscanf(cmd, "0x%x %u", &i, &v) == 2) {
5387 /* i and v set */
5388 } else
5389 return -EINVAL;
5390 if (i >= 0 && i < 256 && v >= 0 && v < 256) {
5391 if (!acpi_ec_write(i, v))
1da177e4
LT		 5392 return -EIO;
5393 } else
5394 return -EINVAL;
5395 }
5396
5397 return 0;
78f81cc4
BD		 5398}
5399
a5763f22
HMH		 5400static struct ibm_struct ecdump_driver_data = {
5401 .name = "ecdump",
5402 .read = ecdump_read,
5403 .write = ecdump_write,
92641177 5404 .flags.experimental = 1,
a5763f22
HMH		 5405};
5406
56b6aeb0
HMH		 5407/*************************************************************************
5408 * Backlight/brightness subdriver
5409 */
5410
f74a27d4
HMH		 5411#define TPACPI_BACKLIGHT_DEV_NAME "thinkpad_screen"
5412
0e501834
HMH		 5413/*
5414 * ThinkPads can read brightness from two places: EC HBRV (0x31), or
5415 * CMOS NVRAM byte 0x5E, bits 0-3.
5416 *
5417 * EC HBRV (0x31) has the following layout
5418 * Bit 7: unknown function
5419 * Bit 6: unknown function
5420 * Bit 5: Z: honour scale changes, NZ: ignore scale changes
5421 * Bit 4: must be set to zero to avoid problems
5422 * Bit 3-0: backlight brightness level
5423 *
5424 * brightness_get_raw returns status data in the HBRV layout
d7880f10
HMH		 5425 *
5426 * WARNING: The X61 has been verified to use HBRV for something else, so
5427 * this should be used _only_ on IBM ThinkPads, and maybe with some careful
5428 * testing on the very early *60 Lenovo models...
0e501834
HMH		 5429 */
5430
e11aecf1
HMH		 5431enum {
5432 TP_EC_BACKLIGHT = 0x31,
5433
5434 /* TP_EC_BACKLIGHT bitmasks */
5435 TP_EC_BACKLIGHT_LVLMSK = 0x1F,
5436 TP_EC_BACKLIGHT_CMDMSK = 0xE0,
5437 TP_EC_BACKLIGHT_MAPSW = 0x20,
5438};
5439
0e501834
HMH		 5440enum tpacpi_brightness_access_mode {
5441 TPACPI_BRGHT_MODE_AUTO = 0, /* Not implemented yet */
5442 TPACPI_BRGHT_MODE_EC, /* EC control */
5443 TPACPI_BRGHT_MODE_UCMS_STEP, /* UCMS step-based control */
5444 TPACPI_BRGHT_MODE_ECNVRAM, /* EC control w/ NVRAM store */
5445 TPACPI_BRGHT_MODE_MAX
5446};
5447
94954cc6 5448static struct backlight_device *ibm_backlight_device;
0e501834
HMH		 5449
5450static enum tpacpi_brightness_access_mode brightness_mode =
5451 TPACPI_BRGHT_MODE_MAX;
5452
f74a27d4
HMH		 5453static unsigned int brightness_enable = 2; /* 2 = auto, 0 = no, 1 = yes */
5454
b21a15f6 5455static struct mutex brightness_mutex;
56b6aeb0 5456
0e501834
HMH		 5457/* NVRAM brightness access,
5458 * call with brightness_mutex held! */
5459static unsigned int tpacpi_brightness_nvram_get(void)
b21a15f6 5460{
0e501834 5461 u8 lnvram;
b21a15f6 5462
0e501834
HMH		 5463 lnvram = (nvram_read_byte(TP_NVRAM_ADDR_BRIGHTNESS)
5464 & TP_NVRAM_MASK_LEVEL_BRIGHTNESS)
5465 >> TP_NVRAM_POS_LEVEL_BRIGHTNESS;
5466 lnvram &= (tp_features.bright_16levels) ? 0x0f : 0x07;
5467
5468 return lnvram;
5469}
5470
5471static void tpacpi_brightness_checkpoint_nvram(void)
5472{
5473 u8 lec = 0;
5474 u8 b_nvram;
5475
5476 if (brightness_mode != TPACPI_BRGHT_MODE_ECNVRAM)
5477 return;
5478
5479 vdbg_printk(TPACPI_DBG_BRGHT,
5480 "trying to checkpoint backlight level to NVRAM...\n");
5481
5482 if (mutex_lock_killable(&brightness_mutex) < 0)
5483 return;
5484
5485 if (unlikely(!acpi_ec_read(TP_EC_BACKLIGHT, &lec)))
5486 goto unlock;
5487 lec &= TP_EC_BACKLIGHT_LVLMSK;
5488 b_nvram = nvram_read_byte(TP_NVRAM_ADDR_BRIGHTNESS);
5489
5490 if (lec != ((b_nvram & TP_NVRAM_MASK_LEVEL_BRIGHTNESS)
5491 >> TP_NVRAM_POS_LEVEL_BRIGHTNESS)) {
5492 /* NVRAM needs update */
5493 b_nvram &= ~(TP_NVRAM_MASK_LEVEL_BRIGHTNESS <<
5494 TP_NVRAM_POS_LEVEL_BRIGHTNESS);
5495 b_nvram |= lec;
5496 nvram_write_byte(b_nvram, TP_NVRAM_ADDR_BRIGHTNESS);
5497 dbg_printk(TPACPI_DBG_BRGHT,
5498 "updated NVRAM backlight level to %u (0x%02x)\n",
5499 (unsigned int) lec, (unsigned int) b_nvram);
5500 } else
5501 vdbg_printk(TPACPI_DBG_BRGHT,
5502 "NVRAM backlight level already is %u (0x%02x)\n",
5503 (unsigned int) lec, (unsigned int) b_nvram);
5504
5505unlock:
5506 mutex_unlock(&brightness_mutex);
5507}
5508
5509
5510/* call with brightness_mutex held! */
5511static int tpacpi_brightness_get_raw(int *status)
5512{
5513 u8 lec = 0;
5514
5515 switch (brightness_mode) {
5516 case TPACPI_BRGHT_MODE_UCMS_STEP:
5517 *status = tpacpi_brightness_nvram_get();
5518 return 0;
5519 case TPACPI_BRGHT_MODE_EC:
5520 case TPACPI_BRGHT_MODE_ECNVRAM:
5521 if (unlikely(!acpi_ec_read(TP_EC_BACKLIGHT, &lec)))
2d5e94d7 5522 return -EIO;
0e501834
HMH		 5523 *status = lec;
5524 return 0;
5525 default:
5526 return -ENXIO;
b21a15f6 5527 }
0e501834
HMH		 5528}
5529
5530/* call with brightness_mutex held! */
5531/* do NOT call with illegal backlight level value */
5532static int tpacpi_brightness_set_ec(unsigned int value)
5533{
5534 u8 lec = 0;
5535
5536 if (unlikely(!acpi_ec_read(TP_EC_BACKLIGHT, &lec)))
5537 return -EIO;
5538
5539 if (unlikely(!acpi_ec_write(TP_EC_BACKLIGHT,
5540 (lec & TP_EC_BACKLIGHT_CMDMSK) |
5541 (value & TP_EC_BACKLIGHT_LVLMSK))))
5542 return -EIO;
5543
5544 return 0;
5545}
5546
5547/* call with brightness_mutex held! */
5548static int tpacpi_brightness_set_ucmsstep(unsigned int value)
5549{
5550 int cmos_cmd, inc;
5551 unsigned int current_value, i;
5552
5553 current_value = tpacpi_brightness_nvram_get();
5554
5555 if (value == current_value)
5556 return 0;
5557
5558 cmos_cmd = (value > current_value) ?
5559 TP_CMOS_BRIGHTNESS_UP :
5560 TP_CMOS_BRIGHTNESS_DOWN;
5561 inc = (value > current_value) ? 1 : -1;
5562
5563 for (i = current_value; i != value; i += inc)
5564 if (issue_thinkpad_cmos_command(cmos_cmd))
5565 return -EIO;
b21a15f6 5566
e11aecf1 5567 return 0;
b21a15f6
HMH		 5568}
5569
5570/* May return EINTR which can always be mapped to ERESTARTSYS */
0e501834 5571static int brightness_set(unsigned int value)
b21a15f6 5572{
0e501834 5573 int res;
b21a15f6 5574
e11aecf1
HMH		 5575 if (value > ((tp_features.bright_16levels)? 15 : 7) ||
5576 value < 0)
b21a15f6
HMH		 5577 return -EINVAL;
5578
0e501834
HMH		 5579 vdbg_printk(TPACPI_DBG_BRGHT,
5580 "set backlight level to %d\n", value);
5581
7646ea88 5582 res = mutex_lock_killable(&brightness_mutex);
b21a15f6
HMH		 5583 if (res < 0)
5584 return res;
5585
0e501834
HMH		 5586 switch (brightness_mode) {
5587 case TPACPI_BRGHT_MODE_EC:
5588 case TPACPI_BRGHT_MODE_ECNVRAM:
5589 res = tpacpi_brightness_set_ec(value);
5590 break;
5591 case TPACPI_BRGHT_MODE_UCMS_STEP:
5592 res = tpacpi_brightness_set_ucmsstep(value);
5593 break;
5594 default:
5595 res = -ENXIO;
b21a15f6
HMH		 5596 }
5597
b21a15f6
HMH		 5598 mutex_unlock(&brightness_mutex);
5599 return res;
5600}
5601
5602/* sysfs backlight class ----------------------------------------------- */
5603
5604static int brightness_update_status(struct backlight_device *bd)
5605{
0e501834 5606 unsigned int level =
b21a15f6
HMH		 5607 (bd->props.fb_blank == FB_BLANK_UNBLANK &&
5608 bd->props.power == FB_BLANK_UNBLANK) ?
0e501834
HMH		 5609 bd->props.brightness : 0;
5610
5611 dbg_printk(TPACPI_DBG_BRGHT,
5612 "backlight: attempt to set level to %d\n",
5613 level);
5614
5615 /* it is the backlight class's job (caller) to handle
5616 * EINTR and other errors properly */
5617 return brightness_set(level);
b21a15f6
HMH		 5618}
5619
e11aecf1 5620static int brightness_get(struct backlight_device *bd)
a3f104c0 5621{
e11aecf1 5622 int status, res;
a3f104c0 5623
0e501834 5624 res = mutex_lock_killable(&brightness_mutex);
e11aecf1 5625 if (res < 0)
0e501834
HMH		 5626 return 0;
5627
5628 res = tpacpi_brightness_get_raw(&status);
5629
5630 mutex_unlock(&brightness_mutex);
5631
5632 if (res < 0)
5633 return 0;
e11e211a 5634
e11aecf1 5635 return status & TP_EC_BACKLIGHT_LVLMSK;
e11e211a
HMH		 5636}
5637
b21a15f6 5638static struct backlight_ops ibm_backlight_data = {
35ff8b9f
HMH		 5639 .get_brightness = brightness_get,
5640 .update_status = brightness_update_status,
56b6aeb0 5641};
e11e211a 5642
b21a15f6 5643/* --------------------------------------------------------------------- */
e11e211a 5644
a5763f22 5645static int __init brightness_init(struct ibm_init_struct *iibm)
56b6aeb0
HMH		 5646{
5647 int b;
5648
fe08bc4b
HMH		 5649 vdbg_printk(TPACPI_DBG_INIT, "initializing brightness subdriver\n");
5650
f432255e
HMH		 5651 mutex_init(&brightness_mutex);
5652
b5972796
HMH		 5653 /*
5654 * We always attempt to detect acpi support, so as to switch
5655 * Lenovo Vista BIOS to ACPI brightness mode even if we are not
5656 * going to publish a backlight interface
5657 */
5658 b = tpacpi_check_std_acpi_brightness_support();
5659 if (b > 0) {
2dba1b5d
TR		 5660
5661 if (acpi_video_backlight_support()) {
5662 if (brightness_enable > 1) {
5663 printk(TPACPI_NOTICE
5664 "Standard ACPI backlight interface "
5665 "available, not loading native one.\n");
5666 return 1;
5667 } else if (brightness_enable == 1) {
5668 printk(TPACPI_NOTICE
5669 "Backlight control force enabled, even if standard "
5670 "ACPI backlight interface is available\n");
5671 }
5672 } else {
5673 if (brightness_enable > 1) {
5674 printk(TPACPI_NOTICE
5675 "Standard ACPI backlight interface not "
5676 "available, thinkpad_acpi native "
5677 "brightness control enabled\n");
5678 }
e11e211a 5679 }
87cc537a
HMH		 5680 }
5681
b5972796 5682 if (!brightness_enable) {
0e501834 5683 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_BRGHT,
b5972796
HMH		 5684 "brightness support disabled by "
5685 "module parameter\n");
5686 return 1;
5687 }
5688
5689 if (b > 16) {
5690 printk(TPACPI_ERR
5691 "Unsupported brightness interface, "
5692 "please contact %s\n", TPACPI_MAIL);
5693 return 1;
5694 }
5695 if (b == 16)
5696 tp_features.bright_16levels = 1;
5697
0e501834
HMH		 5698 /*
5699 * Check for module parameter bogosity, note that we
5700 * init brightness_mode to TPACPI_BRGHT_MODE_MAX in order to be
5701 * able to detect "unspecified"
5702 */
5703 if (brightness_mode > TPACPI_BRGHT_MODE_MAX)
5704 return -EINVAL;
24d3b774 5705
0e501834
HMH		 5706 /* TPACPI_BRGHT_MODE_AUTO not implemented yet, just use default */
5707 if (brightness_mode == TPACPI_BRGHT_MODE_AUTO ||
5708 brightness_mode == TPACPI_BRGHT_MODE_MAX) {
5709 if (thinkpad_id.vendor == PCI_VENDOR_ID_IBM) {
5710 /*
5711 * IBM models that define HBRV probably have
5712 * EC-based backlight level control
5713 */
5714 if (acpi_evalf(ec_handle, NULL, "HBRV", "qd"))
5715 /* T40-T43, R50-R52, R50e, R51e, X31-X41 */
5716 brightness_mode = TPACPI_BRGHT_MODE_ECNVRAM;
5717 else
5718 /* all other IBM ThinkPads */
5719 brightness_mode = TPACPI_BRGHT_MODE_UCMS_STEP;
5720 } else
5721 /* All Lenovo ThinkPads */
5722 brightness_mode = TPACPI_BRGHT_MODE_UCMS_STEP;
24d3b774 5723
0e501834
HMH		 5724 dbg_printk(TPACPI_DBG_BRGHT,
5725 "selected brightness_mode=%d\n",
5726 brightness_mode);
5727 }
24d3b774 5728
d7880f10
HMH		 5729 /* Safety */
5730 if (thinkpad_id.vendor != PCI_VENDOR_ID_IBM &&
5731 (brightness_mode == TPACPI_BRGHT_MODE_ECNVRAM ||
5732 brightness_mode == TPACPI_BRGHT_MODE_EC))
5733 return -EINVAL;
5734
0e501834 5735 if (tpacpi_brightness_get_raw(&b) < 0)
24d3b774 5736 return 1;
56b6aeb0 5737
a3f104c0 5738 if (tp_features.bright_16levels)
35ff8b9f
HMH		 5739 printk(TPACPI_INFO
5740 "detected a 16-level brightness capable ThinkPad\n");
a3f104c0 5741
7d5a015e
HMH		 5742 ibm_backlight_device = backlight_device_register(
5743 TPACPI_BACKLIGHT_DEV_NAME, NULL, NULL,
5744 &ibm_backlight_data);
56b6aeb0 5745 if (IS_ERR(ibm_backlight_device)) {
e0c7dfe7 5746 printk(TPACPI_ERR "Could not register backlight device\n");
56b6aeb0
HMH		 5747 return PTR_ERR(ibm_backlight_device);
5748 }
0e501834
HMH		 5749 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_BRGHT,
5750 "brightness is supported\n");
56b6aeb0 5751
a3f104c0
HMH		 5752 ibm_backlight_device->props.max_brightness =
5753 (tp_features.bright_16levels)? 15 : 7;
e11aecf1 5754 ibm_backlight_device->props.brightness = b & TP_EC_BACKLIGHT_LVLMSK;
56b6aeb0
HMH		 5755 backlight_update_status(ibm_backlight_device);
5756
5757 return 0;
5758}
5759
0e501834
HMH		 5760static void brightness_suspend(pm_message_t state)
5761{
5762 tpacpi_brightness_checkpoint_nvram();
5763}
5764
5765static void brightness_shutdown(void)
5766{
5767 tpacpi_brightness_checkpoint_nvram();
5768}
5769
56b6aeb0
HMH		 5770static void brightness_exit(void)
5771{
5772 if (ibm_backlight_device) {
0e501834 5773 vdbg_printk(TPACPI_DBG_EXIT | TPACPI_DBG_BRGHT,
fe08bc4b 5774 "calling backlight_device_unregister()\n");
56b6aeb0 5775 backlight_device_unregister(ibm_backlight_device);
56b6aeb0 5776 }
0e501834
HMH		 5777
5778 tpacpi_brightness_checkpoint_nvram();
56b6aeb0
HMH		 5779}
5780
56b6aeb0
HMH		 5781static int brightness_read(char *p)
5782{
5783 int len = 0;
5784 int level;
5785
35ff8b9f
HMH		 5786 level = brightness_get(NULL);
5787 if (level < 0) {
56b6aeb0
HMH		 5788 len += sprintf(p + len, "level:\t\tunreadable\n");
5789 } else {
a3f104c0 5790 len += sprintf(p + len, "level:\t\t%d\n", level);
56b6aeb0
HMH		 5791 len += sprintf(p + len, "commands:\tup, down\n");
5792 len += sprintf(p + len, "commands:\tlevel <level>"
a3f104c0
HMH		 5793 " (<level> is 0-%d)\n",
5794 (tp_features.bright_16levels) ? 15 : 7);
56b6aeb0
HMH		 5795 }
5796
5797 return len;
5798}
5799
8acb0250
HM		 5800static int brightness_write(char *buf)
5801{
5802 int level;
4273af8d 5803 int rc;
1da177e4 5804 char *cmd;
a3f104c0 5805 int max_level = (tp_features.bright_16levels) ? 15 : 7;
1da177e4 5806
4273af8d
HMH		 5807 level = brightness_get(NULL);
5808 if (level < 0)
5809 return level;
78f81cc4 5810
4273af8d 5811 while ((cmd = next_cmd(&buf))) {
78f81cc4 5812 if (strlencmp(cmd, "up") == 0) {
4273af8d
HMH		 5813 if (level < max_level)
5814 level++;
78f81cc4 5815 } else if (strlencmp(cmd, "down") == 0) {
4273af8d
HMH		 5816 if (level > 0)
5817 level--;
5818 } else if (sscanf(cmd, "level %d", &level) == 1 &&
5819 level >= 0 && level <= max_level) {
5820 /* new level set */
78f81cc4
BD		 5821 } else
5822 return -EINVAL;
78f81cc4
BD		 5823 }
5824
0e501834
HMH		 5825 tpacpi_disclose_usertask("procfs brightness",
5826 "set level to %d\n", level);
5827
4273af8d
HMH		 5828 /*
5829 * Now we know what the final level should be, so we try to set it.
5830 * Doing it this way makes the syscall restartable in case of EINTR
5831 */
5832 rc = brightness_set(level);
5833 return (rc == -EINTR)? ERESTARTSYS : rc;
78f81cc4
BD		 5834}
5835
a5763f22
HMH		 5836static struct ibm_struct brightness_driver_data = {
5837 .name = "brightness",
5838 .read = brightness_read,
5839 .write = brightness_write,
5840 .exit = brightness_exit,
0e501834
HMH		 5841 .suspend = brightness_suspend,
5842 .shutdown = brightness_shutdown,
a5763f22
HMH		 5843};
5844
56b6aeb0
HMH		 5845/*************************************************************************
5846 * Volume subdriver
5847 */
fb87a811 5848
f74a27d4
HMH		 5849static int volume_offset = 0x30;
5850
78f81cc4
BD		 5851static int volume_read(char *p)
5852{
5853 int len = 0;
5854 u8 level;
5855
5856 if (!acpi_ec_read(volume_offset, &level)) {
5857 len += sprintf(p + len, "level:\t\tunreadable\n");
5858 } else {
5859 len += sprintf(p + len, "level:\t\t%d\n", level & 0xf);
5860 len += sprintf(p + len, "mute:\t\t%s\n", onoff(level, 6));
5861 len += sprintf(p + len, "commands:\tup, down, mute\n");
5862 len += sprintf(p + len, "commands:\tlevel <level>"
5863 " (<level> is 0-15)\n");
5864 }
5865
5866 return len;
5867}
5868
78f81cc4
BD		 5869static int volume_write(char *buf)
5870{
5871 int cmos_cmd, inc, i;
5872 u8 level, mute;
5873 int new_level, new_mute;
5874 char *cmd;
5875
5876 while ((cmd = next_cmd(&buf))) {
5877 if (!acpi_ec_read(volume_offset, &level))
5878 return -EIO;
5879 new_mute = mute = level & 0x40;
5880 new_level = level = level & 0xf;
5881
5882 if (strlencmp(cmd, "up") == 0) {
5883 if (mute)
5884 new_mute = 0;
5885 else
5886 new_level = level == 15 ? 15 : level + 1;
5887 } else if (strlencmp(cmd, "down") == 0) {
5888 if (mute)
5889 new_mute = 0;
5890 else
5891 new_level = level == 0 ? 0 : level - 1;
5892 } else if (sscanf(cmd, "level %d", &new_level) == 1 &&
5893 new_level >= 0 && new_level <= 15) {
5894 /* new_level set */
5895 } else if (strlencmp(cmd, "mute") == 0) {
5896 new_mute = 0x40;
1da177e4
LT		 5897 } else
5898 return -EINVAL;
5899
35ff8b9f
HMH		 5900 if (new_level != level) {
5901 /* mute doesn't change */
5902
5903 cmos_cmd = (new_level > level) ?
5904 TP_CMOS_VOLUME_UP : TP_CMOS_VOLUME_DOWN;
78f81cc4
BD		 5905 inc = new_level > level ? 1 : -1;
5906
c9bea99c 5907 if (mute && (issue_thinkpad_cmos_command(cmos_cmd) ||
78f81cc4
BD		 5908 !acpi_ec_write(volume_offset, level)))
5909 return -EIO;
5910
5911 for (i = level; i != new_level; i += inc)
c9bea99c 5912 if (issue_thinkpad_cmos_command(cmos_cmd) ||
78f81cc4
BD		 5913 !acpi_ec_write(volume_offset, i + inc))
5914 return -EIO;
5915
35ff8b9f
HMH		 5916 if (mute &&
5917 (issue_thinkpad_cmos_command(TP_CMOS_VOLUME_MUTE) ||
5918 !acpi_ec_write(volume_offset, new_level + mute))) {
78f81cc4 5919 return -EIO;
35ff8b9f 5920 }
78f81cc4
BD		 5921 }
5922
35ff8b9f
HMH		 5923 if (new_mute != mute) {
5924 /* level doesn't change */
5925
5926 cmos_cmd = (new_mute) ?
5927 TP_CMOS_VOLUME_MUTE : TP_CMOS_VOLUME_UP;
78f81cc4 5928
c9bea99c 5929 if (issue_thinkpad_cmos_command(cmos_cmd) ||
78f81cc4
BD		 5930 !acpi_ec_write(volume_offset, level + new_mute))
5931 return -EIO;
5932 }
5933 }
5934
5935 return 0;
5936}
5937
a5763f22
HMH		 5938static struct ibm_struct volume_driver_data = {
5939 .name = "volume",
5940 .read = volume_read,
5941 .write = volume_write,
5942};
56b6aeb0
HMH		 5943
5944/*************************************************************************
5945 * Fan subdriver
5946 */
5947
5948/*
5949 * FAN ACCESS MODES
5950 *
efa27145 5951 * TPACPI_FAN_RD_ACPI_GFAN:
56b6aeb0
HMH		 5952 * ACPI GFAN method: returns fan level
5953 *
efa27145 5954 * see TPACPI_FAN_WR_ACPI_SFAN
f51d1a39 5955 * EC 0x2f (HFSP) not available if GFAN exists
56b6aeb0 5956 *
efa27145 5957 * TPACPI_FAN_WR_ACPI_SFAN:
56b6aeb0
HMH		 5958 * ACPI SFAN method: sets fan level, 0 (stop) to 7 (max)
5959 *
f51d1a39
HMH		 5960 * EC 0x2f (HFSP) might be available *for reading*, but do not use
5961 * it for writing.
56b6aeb0 5962 *
efa27145 5963 * TPACPI_FAN_WR_TPEC:
f51d1a39
HMH		 5964 * ThinkPad EC register 0x2f (HFSP): fan control loop mode
5965 * Supported on almost all ThinkPads
56b6aeb0
HMH		 5966 *
5967 * Fan speed changes of any sort (including those caused by the
5968 * disengaged mode) are usually done slowly by the firmware as the
5969 * maximum ammount of fan duty cycle change per second seems to be
5970 * limited.
5971 *
5972 * Reading is not available if GFAN exists.
5973 * Writing is not available if SFAN exists.
5974 *
5975 * Bits
5976 * 7 automatic mode engaged;
5977 * (default operation mode of the ThinkPad)
5978 * fan level is ignored in this mode.
f51d1a39 5979 * 6 full speed mode (takes precedence over bit 7);
56b6aeb0 5980 * not available on all thinkpads. May disable
f51d1a39
HMH		 5981 * the tachometer while the fan controller ramps up
5982 * the speed (which can take up to a few *minutes*).
5983 * Speeds up fan to 100% duty-cycle, which is far above
5984 * the standard RPM levels. It is not impossible that
5985 * it could cause hardware damage.
56b6aeb0
HMH		 5986 * 5-3 unused in some models. Extra bits for fan level
5987 * in others, but still useless as all values above
5988 * 7 map to the same speed as level 7 in these models.
5989 * 2-0 fan level (0..7 usually)
5990 * 0x00 = stop
5991 * 0x07 = max (set when temperatures critical)
5992 * Some ThinkPads may have other levels, see
efa27145 5993 * TPACPI_FAN_WR_ACPI_FANS (X31/X40/X41)
56b6aeb0
HMH		 5994 *
5995 * FIRMWARE BUG: on some models, EC 0x2f might not be initialized at
5996 * boot. Apparently the EC does not intialize it, so unless ACPI DSDT
5997 * does so, its initial value is meaningless (0x07).
5998 *
5999 * For firmware bugs, refer to:
6000 * http://thinkwiki.org/wiki/Embedded_Controller_Firmware#Firmware_Issues
6001 *
6002 * ----
6003 *
6004 * ThinkPad EC register 0x84 (LSB), 0x85 (MSB):
6005 * Main fan tachometer reading (in RPM)
6006 *
6007 * This register is present on all ThinkPads with a new-style EC, and
6008 * it is known not to be present on the A21m/e, and T22, as there is
6009 * something else in offset 0x84 according to the ACPI DSDT. Other
6010 * ThinkPads from this same time period (and earlier) probably lack the
6011 * tachometer as well.
6012 *
877d0310 6013 * Unfortunately a lot of ThinkPads with new-style ECs but whose firmware
56b6aeb0
HMH		 6014 * was never fixed by IBM to report the EC firmware version string
6015 * probably support the tachometer (like the early X models), so
6016 * detecting it is quite hard. We need more data to know for sure.
6017 *
6018 * FIRMWARE BUG: always read 0x84 first, otherwise incorrect readings
6019 * might result.
6020 *
f51d1a39
HMH		 6021 * FIRMWARE BUG: may go stale while the EC is switching to full speed
6022 * mode.
56b6aeb0
HMH		 6023 *
6024 * For firmware bugs, refer to:
6025 * http://thinkwiki.org/wiki/Embedded_Controller_Firmware#Firmware_Issues
6026 *
d7377247
HMH		 6027 * ----
6028 *
6029 * ThinkPad EC register 0x31 bit 0 (only on select models)
6030 *
6031 * When bit 0 of EC register 0x31 is zero, the tachometer registers
6032 * show the speed of the main fan. When bit 0 of EC register 0x31
6033 * is one, the tachometer registers show the speed of the auxiliary
6034 * fan.
6035 *
6036 * Fan control seems to affect both fans, regardless of the state
6037 * of this bit.
6038 *
6039 * So far, only the firmware for the X60/X61 non-tablet versions
6040 * seem to support this (firmware TP-7M).
6041 *
efa27145 6042 * TPACPI_FAN_WR_ACPI_FANS:
56b6aeb0
HMH		 6043 * ThinkPad X31, X40, X41. Not available in the X60.
6044 *
6045 * FANS ACPI handle: takes three arguments: low speed, medium speed,
6046 * high speed. ACPI DSDT seems to map these three speeds to levels
6047 * as follows: STOP LOW LOW MED MED HIGH HIGH HIGH HIGH
6048 * (this map is stored on FAN0..FAN8 as "0,1,1,2,2,3,3,3,3")
6049 *
6050 * The speeds are stored on handles
6051 * (FANA:FAN9), (FANC:FANB), (FANE:FAND).
6052 *
6053 * There are three default speed sets, acessible as handles:
6054 * FS1L,FS1M,FS1H; FS2L,FS2M,FS2H; FS3L,FS3M,FS3H
6055 *
6056 * ACPI DSDT switches which set is in use depending on various
6057 * factors.
6058 *
efa27145 6059 * TPACPI_FAN_WR_TPEC is also available and should be used to
56b6aeb0
HMH		 6060 * command the fan. The X31/X40/X41 seems to have 8 fan levels,
6061 * but the ACPI tables just mention level 7.
6062 */
6063
f74a27d4
HMH		 6064enum { /* Fan control constants */
6065 fan_status_offset = 0x2f, /* EC register 0x2f */
6066 fan_rpm_offset = 0x84, /* EC register 0x84: LSB, 0x85 MSB (RPM)
6067 * 0x84 must be read before 0x85 */
d7377247
HMH		 6068 fan_select_offset = 0x31, /* EC register 0x31 (Firmware 7M)
6069 bit 0 selects which fan is active */
f74a27d4
HMH		 6070
6071 TP_EC_FAN_FULLSPEED = 0x40, /* EC fan mode: full speed */
6072 TP_EC_FAN_AUTO = 0x80, /* EC fan mode: auto fan control */
6073
6074 TPACPI_FAN_LAST_LEVEL = 0x100, /* Use cached last-seen fan level */
6075};
6076
6077enum fan_status_access_mode {
6078 TPACPI_FAN_NONE = 0, /* No fan status or control */
6079 TPACPI_FAN_RD_ACPI_GFAN, /* Use ACPI GFAN */
6080 TPACPI_FAN_RD_TPEC, /* Use ACPI EC regs 0x2f, 0x84-0x85 */
6081};
6082
6083enum fan_control_access_mode {
6084 TPACPI_FAN_WR_NONE = 0, /* No fan control */
6085 TPACPI_FAN_WR_ACPI_SFAN, /* Use ACPI SFAN */
6086 TPACPI_FAN_WR_TPEC, /* Use ACPI EC reg 0x2f */
6087 TPACPI_FAN_WR_ACPI_FANS, /* Use ACPI FANS and EC reg 0x2f */
6088};
6089
6090enum fan_control_commands {
6091 TPACPI_FAN_CMD_SPEED = 0x0001, /* speed command */
6092 TPACPI_FAN_CMD_LEVEL = 0x0002, /* level command */
6093 TPACPI_FAN_CMD_ENABLE = 0x0004, /* enable/disable cmd,
6094 * and also watchdog cmd */
6095};
6096
6097static int fan_control_allowed;
6098
69ba91cb
HMH		 6099static enum fan_status_access_mode fan_status_access_mode;
6100static enum fan_control_access_mode fan_control_access_mode;
6101static enum fan_control_commands fan_control_commands;
78f81cc4 6102
778b4d74 6103static u8 fan_control_initial_status;
fe98a52c 6104static u8 fan_control_desired_level;
0081b162 6105static u8 fan_control_resume_level;
f74a27d4
HMH		 6106static int fan_watchdog_maxinterval;
6107
6108static struct mutex fan_mutex;
778b4d74 6109
25c68a33 6110static void fan_watchdog_fire(struct work_struct *ignored);
25c68a33 6111static DECLARE_DELAYED_WORK(fan_watchdog_task, fan_watchdog_fire);
16663a87 6112
e0c7dfe7
HMH		 6113TPACPI_HANDLE(fans, ec, "FANS"); /* X31, X40, X41 */
6114TPACPI_HANDLE(gfan, ec, "GFAN", /* 570 */
56b6aeb0
HMH		 6115 "\\FSPD", /* 600e/x, 770e, 770x */
6116 ); /* all others */
e0c7dfe7 6117TPACPI_HANDLE(sfan, ec, "SFAN", /* 570 */
56b6aeb0
HMH		 6118 "JFNS", /* 770x-JL */
6119 ); /* all others */
6120
1c2ece75
HMH		 6121/*
6122 * Unitialized HFSP quirk: ACPI DSDT and EC fail to initialize the
6123 * HFSP register at boot, so it contains 0x07 but the Thinkpad could
6124 * be in auto mode (0x80).
6125 *
6126 * This is corrected by any write to HFSP either by the driver, or
6127 * by the firmware.
6128 *
6129 * We assume 0x07 really means auto mode while this quirk is active,
6130 * as this is far more likely than the ThinkPad being in level 7,
6131 * which is only used by the firmware during thermal emergencies.
7d95a3d5
HMH		 6132 *
6133 * Enable for TP-1Y (T43), TP-78 (R51e), TP-76 (R52),
6134 * TP-70 (T43, R52), which are known to be buggy.
1c2ece75
HMH		 6135 */
6136
7d95a3d5 6137static void fan_quirk1_setup(void)
1c2ece75 6138{
1c2ece75 6139 if (fan_control_initial_status == 0x07) {
7d95a3d5
HMH		 6140 printk(TPACPI_NOTICE
6141 "fan_init: initial fan status is unknown, "
6142 "assuming it is in auto mode\n");
6143 tp_features.fan_ctrl_status_undef = 1;
1c2ece75
HMH		 6144 }
6145}
6146
6147static void fan_quirk1_handle(u8 *fan_status)
6148{
6149 if (unlikely(tp_features.fan_ctrl_status_undef)) {
6150 if (*fan_status != fan_control_initial_status) {
6151 /* something changed the HFSP regisnter since
6152 * driver init time, so it is not undefined
6153 * anymore */
6154 tp_features.fan_ctrl_status_undef = 0;
6155 } else {
6156 /* Return most likely status. In fact, it
6157 * might be the only possible status */
6158 *fan_status = TP_EC_FAN_AUTO;
6159 }
6160 }
6161}
6162
d7377247
HMH		 6163/* Select main fan on X60/X61, NOOP on others */
6164static bool fan_select_fan1(void)
6165{
6166 if (tp_features.second_fan) {
6167 u8 val;
6168
6169 if (ec_read(fan_select_offset, &val) < 0)
6170 return false;
6171 val &= 0xFEU;
6172 if (ec_write(fan_select_offset, val) < 0)
6173 return false;
6174 }
6175 return true;
6176}
6177
6178/* Select secondary fan on X60/X61 */
6179static bool fan_select_fan2(void)
6180{
6181 u8 val;
6182
6183 if (!tp_features.second_fan)
6184 return false;
6185
6186 if (ec_read(fan_select_offset, &val) < 0)
6187 return false;
6188 val |= 0x01U;
6189 if (ec_write(fan_select_offset, val) < 0)
6190 return false;
6191
6192 return true;
6193}
6194
fe98a52c 6195/*
b21a15f6 6196 * Call with fan_mutex held
fe98a52c 6197 */
b21a15f6 6198static void fan_update_desired_level(u8 status)
fe98a52c 6199{
b21a15f6
HMH		 6200 if ((status &
6201 (TP_EC_FAN_AUTO | TP_EC_FAN_FULLSPEED)) == 0) {
6202 if (status > 7)
6203 fan_control_desired_level = 7;
6204 else
6205 fan_control_desired_level = status;
6206 }
6207}
fe98a52c 6208
b21a15f6
HMH		 6209static int fan_get_status(u8 *status)
6210{
6211 u8 s;
fe98a52c 6212
b21a15f6
HMH		 6213 /* TODO:
6214 * Add TPACPI_FAN_RD_ACPI_FANS ? */
fe98a52c 6215
b21a15f6
HMH		 6216 switch (fan_status_access_mode) {
6217 case TPACPI_FAN_RD_ACPI_GFAN:
6218 /* 570, 600e/x, 770e, 770x */
fe98a52c 6219
b21a15f6
HMH		 6220 if (unlikely(!acpi_evalf(gfan_handle, &s, NULL, "d")))
6221 return -EIO;
fe98a52c 6222
b21a15f6
HMH		 6223 if (likely(status))
6224 *status = s & 0x07;
fe98a52c 6225
b21a15f6
HMH		 6226 break;
6227
6228 case TPACPI_FAN_RD_TPEC:
6229 /* all except 570, 600e/x, 770e, 770x */
6230 if (unlikely(!acpi_ec_read(fan_status_offset, &s)))
6231 return -EIO;
6232
1c2ece75 6233 if (likely(status)) {
b21a15f6 6234 *status = s;
1c2ece75
HMH		 6235 fan_quirk1_handle(status);
6236 }
fe98a52c 6237
fe98a52c 6238 break;
b21a15f6 6239
fe98a52c 6240 default:
b21a15f6 6241 return -ENXIO;
fe98a52c
HMH		 6242 }
6243
b21a15f6
HMH		 6244 return 0;
6245}
fe98a52c 6246
b21a15f6
HMH		 6247static int fan_get_status_safe(u8 *status)
6248{
6249 int rc;
6250 u8 s;
fe98a52c 6251
7646ea88 6252 if (mutex_lock_killable(&fan_mutex))
b21a15f6
HMH		 6253 return -ERESTARTSYS;
6254 rc = fan_get_status(&s);
6255 if (!rc)
6256 fan_update_desired_level(s);
6257 mutex_unlock(&fan_mutex);
fe98a52c 6258
b21a15f6
HMH		 6259 if (status)
6260 *status = s;
fe98a52c 6261
b21a15f6
HMH		 6262 return rc;
6263}
6264
6265static int fan_get_speed(unsigned int *speed)
fe98a52c 6266{
b21a15f6 6267 u8 hi, lo;
fe98a52c 6268
b21a15f6
HMH		 6269 switch (fan_status_access_mode) {
6270 case TPACPI_FAN_RD_TPEC:
6271 /* all except 570, 600e/x, 770e, 770x */
d7377247
HMH		 6272 if (unlikely(!fan_select_fan1()))
6273 return -EIO;
b21a15f6
HMH		 6274 if (unlikely(!acpi_ec_read(fan_rpm_offset, &lo) ||
6275 !acpi_ec_read(fan_rpm_offset + 1, &hi)))
6276 return -EIO;
fe98a52c 6277
b21a15f6
HMH		 6278 if (likely(speed))
6279 *speed = (hi << 8) | lo;
fe98a52c 6280
b21a15f6 6281 break;
fe98a52c 6282
b21a15f6
HMH		 6283 default:
6284 return -ENXIO;
6285 }
fe98a52c 6286
b21a15f6 6287 return 0;
fe98a52c
HMH		 6288}
6289
d7377247
HMH		 6290static int fan2_get_speed(unsigned int *speed)
6291{
6292 u8 hi, lo;
6293 bool rc;
6294
6295 switch (fan_status_access_mode) {
6296 case TPACPI_FAN_RD_TPEC:
6297 /* all except 570, 600e/x, 770e, 770x */
6298 if (unlikely(!fan_select_fan2()))
6299 return -EIO;
6300 rc = !acpi_ec_read(fan_rpm_offset, &lo) ||
6301 !acpi_ec_read(fan_rpm_offset + 1, &hi);
6302 fan_select_fan1(); /* play it safe */
6303 if (rc)
6304 return -EIO;
6305
6306 if (likely(speed))
6307 *speed = (hi << 8) | lo;
6308
6309 break;
6310
6311 default:
6312 return -ENXIO;
6313 }
6314
6315 return 0;
6316}
6317
b21a15f6 6318static int fan_set_level(int level)
fe98a52c 6319{
b21a15f6
HMH		 6320 if (!fan_control_allowed)
6321 return -EPERM;
fe98a52c 6322
b21a15f6
HMH		 6323 switch (fan_control_access_mode) {
6324 case TPACPI_FAN_WR_ACPI_SFAN:
6325 if (level >= 0 && level <= 7) {
6326 if (!acpi_evalf(sfan_handle, NULL, NULL, "vd", level))
6327 return -EIO;
6328 } else
6329 return -EINVAL;
6330 break;
fe98a52c 6331
b21a15f6
HMH		 6332 case TPACPI_FAN_WR_ACPI_FANS:
6333 case TPACPI_FAN_WR_TPEC:
0081b162
HMH		 6334 if (!(level & TP_EC_FAN_AUTO) &&
6335 !(level & TP_EC_FAN_FULLSPEED) &&
b21a15f6
HMH		 6336 ((level < 0) || (level > 7)))
6337 return -EINVAL;
fe98a52c 6338
b21a15f6
HMH		 6339 /* safety net should the EC not support AUTO
6340 * or FULLSPEED mode bits and just ignore them */
6341 if (level & TP_EC_FAN_FULLSPEED)
6342 level |= 7; /* safety min speed 7 */
547266e4 6343 else if (level & TP_EC_FAN_AUTO)
b21a15f6 6344 level |= 4; /* safety min speed 4 */
fe98a52c 6345
b21a15f6
HMH		 6346 if (!acpi_ec_write(fan_status_offset, level))
6347 return -EIO;
6348 else
6349 tp_features.fan_ctrl_status_undef = 0;
6350 break;
fe98a52c 6351
b21a15f6
HMH		 6352 default:
6353 return -ENXIO;
6354 }
74a60c0f
HMH		 6355
6356 vdbg_printk(TPACPI_DBG_FAN,
6357 "fan control: set fan control register to 0x%02x\n", level);
b21a15f6 6358 return 0;
fe98a52c
HMH		 6359}
6360
b21a15f6 6361static int fan_set_level_safe(int level)
fe98a52c 6362{
b21a15f6 6363 int rc;
fe98a52c 6364
b21a15f6
HMH		 6365 if (!fan_control_allowed)
6366 return -EPERM;
fe98a52c 6367
7646ea88 6368 if (mutex_lock_killable(&fan_mutex))
b21a15f6 6369 return -ERESTARTSYS;
fe98a52c 6370
b21a15f6
HMH		 6371 if (level == TPACPI_FAN_LAST_LEVEL)
6372 level = fan_control_desired_level;
fe98a52c 6373
b21a15f6
HMH		 6374 rc = fan_set_level(level);
6375 if (!rc)
6376 fan_update_desired_level(level);
6377
6378 mutex_unlock(&fan_mutex);
6379 return rc;
fe98a52c
HMH		 6380}
6381
b21a15f6 6382static int fan_set_enable(void)
fe98a52c 6383{
b21a15f6
HMH		 6384 u8 s;
6385 int rc;
fe98a52c 6386
ecf2a80a
HMH		 6387 if (!fan_control_allowed)
6388 return -EPERM;
6389
7646ea88 6390 if (mutex_lock_killable(&fan_mutex))
b21a15f6 6391 return -ERESTARTSYS;
fe98a52c 6392
b21a15f6
HMH		 6393 switch (fan_control_access_mode) {
6394 case TPACPI_FAN_WR_ACPI_FANS:
6395 case TPACPI_FAN_WR_TPEC:
6396 rc = fan_get_status(&s);
6397 if (rc < 0)
6398 break;
fe98a52c 6399
b21a15f6
HMH		 6400 /* Don't go out of emergency fan mode */
6401 if (s != 7) {
6402 s &= 0x07;
6403 s |= TP_EC_FAN_AUTO | 4; /* min fan speed 4 */
6404 }
fe98a52c 6405
b21a15f6
HMH		 6406 if (!acpi_ec_write(fan_status_offset, s))
6407 rc = -EIO;
6408 else {
6409 tp_features.fan_ctrl_status_undef = 0;
6410 rc = 0;
6411 }
6412 break;
fe98a52c 6413
b21a15f6
HMH		 6414 case TPACPI_FAN_WR_ACPI_SFAN:
6415 rc = fan_get_status(&s);
6416 if (rc < 0)
6417 break;
fe98a52c 6418
b21a15f6 6419 s &= 0x07;
fe98a52c 6420
b21a15f6
HMH		 6421 /* Set fan to at least level 4 */
6422 s |= 4;
fe08bc4b 6423
b21a15f6 6424 if (!acpi_evalf(sfan_handle, NULL, NULL, "vd", s))
35ff8b9f 6425 rc = -EIO;
b21a15f6
HMH		 6426 else
6427 rc = 0;
6428 break;
78f81cc4 6429
b21a15f6
HMH		 6430 default:
6431 rc = -ENXIO;
6432 }
5fba344c 6433
b21a15f6 6434 mutex_unlock(&fan_mutex);
74a60c0f
HMH		 6435
6436 if (!rc)
6437 vdbg_printk(TPACPI_DBG_FAN,
6438 "fan control: set fan control register to 0x%02x\n",
6439 s);
b21a15f6 6440 return rc;
69ba91cb 6441}
78f81cc4 6442
b21a15f6 6443static int fan_set_disable(void)
78f81cc4 6444{
b21a15f6 6445 int rc;
c52f0aa5 6446
b21a15f6
HMH		 6447 if (!fan_control_allowed)
6448 return -EPERM;
78f81cc4 6449
7646ea88 6450 if (mutex_lock_killable(&fan_mutex))
b21a15f6 6451 return -ERESTARTSYS;
3ef8a609 6452
b21a15f6
HMH		 6453 rc = 0;
6454 switch (fan_control_access_mode) {
6455 case TPACPI_FAN_WR_ACPI_FANS:
6456 case TPACPI_FAN_WR_TPEC:
6457 if (!acpi_ec_write(fan_status_offset, 0x00))
6458 rc = -EIO;
6459 else {
6460 fan_control_desired_level = 0;
6461 tp_features.fan_ctrl_status_undef = 0;
6462 }
3ef8a609
HMH		 6463 break;
6464
b21a15f6
HMH		 6465 case TPACPI_FAN_WR_ACPI_SFAN:
6466 if (!acpi_evalf(sfan_handle, NULL, NULL, "vd", 0x00))
6467 rc = -EIO;
6468 else
6469 fan_control_desired_level = 0;
c52f0aa5
HMH		 6470 break;
6471
6472 default:
b21a15f6 6473 rc = -ENXIO;
78f81cc4
BD		 6474 }
6475
74a60c0f
HMH		 6476 if (!rc)
6477 vdbg_printk(TPACPI_DBG_FAN,
6478 "fan control: set fan control register to 0\n");
fe98a52c 6479
fe98a52c 6480 mutex_unlock(&fan_mutex);
fe98a52c
HMH		 6481 return rc;
6482}
6483
b21a15f6 6484static int fan_set_speed(int speed)
c52f0aa5 6485{
b21a15f6 6486 int rc;
c52f0aa5 6487
b21a15f6
HMH		 6488 if (!fan_control_allowed)
6489 return -EPERM;
3ef8a609 6490
7646ea88 6491 if (mutex_lock_killable(&fan_mutex))
b21a15f6 6492 return -ERESTARTSYS;
c52f0aa5 6493
b21a15f6
HMH		 6494 rc = 0;
6495 switch (fan_control_access_mode) {
6496 case TPACPI_FAN_WR_ACPI_FANS:
6497 if (speed >= 0 && speed <= 65535) {
6498 if (!acpi_evalf(fans_handle, NULL, NULL, "vddd",
6499 speed, speed, speed))
6500 rc = -EIO;
6501 } else
6502 rc = -EINVAL;
c52f0aa5
HMH		 6503 break;
6504
6505 default:
b21a15f6 6506 rc = -ENXIO;
c52f0aa5
HMH		 6507 }
6508
b21a15f6
HMH		 6509 mutex_unlock(&fan_mutex);
6510 return rc;
16663a87
HMH		 6511}
6512
6513static void fan_watchdog_reset(void)
6514{
94954cc6 6515 static int fan_watchdog_active;
16663a87 6516
4985cd0a
HMH		 6517 if (fan_control_access_mode == TPACPI_FAN_WR_NONE)
6518 return;
6519
16663a87
HMH		 6520 if (fan_watchdog_active)
6521 cancel_delayed_work(&fan_watchdog_task);
6522
8fef502e
HMH		 6523 if (fan_watchdog_maxinterval > 0 &&
6524 tpacpi_lifecycle != TPACPI_LIFE_EXITING) {
16663a87 6525 fan_watchdog_active = 1;
e0e3c061 6526 if (!queue_delayed_work(tpacpi_wq, &fan_watchdog_task,
16663a87
HMH		 6527 msecs_to_jiffies(fan_watchdog_maxinterval
6528 * 1000))) {
35ff8b9f 6529 printk(TPACPI_ERR
e0e3c061 6530 "failed to queue the fan watchdog, "
16663a87
HMH		 6531 "watchdog will not trigger\n");
6532 }
6533 } else
6534 fan_watchdog_active = 0;
6535}
6536
b21a15f6 6537static void fan_watchdog_fire(struct work_struct *ignored)
78f81cc4 6538{
b21a15f6 6539 int rc;
18ad7996 6540
b21a15f6
HMH		 6541 if (tpacpi_lifecycle != TPACPI_LIFE_RUNNING)
6542 return;
a12095c2 6543
e0c7dfe7 6544 printk(TPACPI_NOTICE "fan watchdog: enabling fan\n");
b21a15f6
HMH		 6545 rc = fan_set_enable();
6546 if (rc < 0) {
e0c7dfe7 6547 printk(TPACPI_ERR "fan watchdog: error %d while enabling fan, "
b21a15f6
HMH		 6548 "will try again later...\n", -rc);
6549 /* reschedule for later */
6550 fan_watchdog_reset();
6551 }
6552}
eaa7571b 6553
b21a15f6
HMH		 6554/*
6555 * SYSFS fan layout: hwmon compatible (device)
6556 *
6557 * pwm*_enable:
6558 * 0: "disengaged" mode
6559 * 1: manual mode
6560 * 2: native EC "auto" mode (recommended, hardware default)
6561 *
6562 * pwm*: set speed in manual mode, ignored otherwise.
6563 * 0 is level 0; 255 is level 7. Intermediate points done with linear
6564 * interpolation.
6565 *
6566 * fan*_input: tachometer reading, RPM
6567 *
6568 *
6569 * SYSFS fan layout: extensions
6570 *
6571 * fan_watchdog (driver):
6572 * fan watchdog interval in seconds, 0 disables (default), max 120
6573 */
6574
6575/* sysfs fan pwm1_enable ----------------------------------------------- */
6576static ssize_t fan_pwm1_enable_show(struct device *dev,
6577 struct device_attribute *attr,
6578 char *buf)
6579{
6580 int res, mode;
6581 u8 status;
6582
6583 res = fan_get_status_safe(&status);
6584 if (res)
6585 return res;
6586
b21a15f6
HMH		 6587 if (status & TP_EC_FAN_FULLSPEED) {
6588 mode = 0;
6589 } else if (status & TP_EC_FAN_AUTO) {
6590 mode = 2;
6591 } else
6592 mode = 1;
6593
6594 return snprintf(buf, PAGE_SIZE, "%d\n", mode);
6595}
a12095c2 6596
b21a15f6
HMH		 6597static ssize_t fan_pwm1_enable_store(struct device *dev,
6598 struct device_attribute *attr,
6599 const char *buf, size_t count)
6600{
6601 unsigned long t;
6602 int res, level;
6603
6604 if (parse_strtoul(buf, 2, &t))
6605 return -EINVAL;
6606
74a60c0f
HMH		 6607 tpacpi_disclose_usertask("hwmon pwm1_enable",
6608 "set fan mode to %lu\n", t);
6609
b21a15f6
HMH		 6610 switch (t) {
6611 case 0:
6612 level = TP_EC_FAN_FULLSPEED;
6613 break;
6614 case 1:
6615 level = TPACPI_FAN_LAST_LEVEL;
6616 break;
6617 case 2:
6618 level = TP_EC_FAN_AUTO;
6619 break;
6620 case 3:
6621 /* reserved for software-controlled auto mode */
6622 return -ENOSYS;
18ad7996 6623 default:
b21a15f6 6624 return -EINVAL;
18ad7996 6625 }
b21a15f6
HMH		 6626
6627 res = fan_set_level_safe(level);
6628 if (res == -ENXIO)
6629 return -EINVAL;
6630 else if (res < 0)
6631 return res;
6632
6633 fan_watchdog_reset();
6634
6635 return count;
18ad7996
HMH		 6636}
6637
b21a15f6
HMH		 6638static struct device_attribute dev_attr_fan_pwm1_enable =
6639 __ATTR(pwm1_enable, S_IWUSR | S_IRUGO,
6640 fan_pwm1_enable_show, fan_pwm1_enable_store);
6641
6642/* sysfs fan pwm1 ------------------------------------------------------ */
6643static ssize_t fan_pwm1_show(struct device *dev,
6644 struct device_attribute *attr,
6645 char *buf)
fe98a52c 6646{
b21a15f6
HMH		 6647 int res;
6648 u8 status;
fe98a52c 6649
b21a15f6
HMH		 6650 res = fan_get_status_safe(&status);
6651 if (res)
6652 return res;
ecf2a80a 6653
b21a15f6
HMH		 6654 if ((status &
6655 (TP_EC_FAN_AUTO | TP_EC_FAN_FULLSPEED)) != 0)
6656 status = fan_control_desired_level;
fe98a52c 6657
b21a15f6
HMH		 6658 if (status > 7)
6659 status = 7;
fe98a52c 6660
b21a15f6 6661 return snprintf(buf, PAGE_SIZE, "%u\n", (status * 255) / 7);
fe98a52c
HMH		 6662}
6663
b21a15f6
HMH		 6664static ssize_t fan_pwm1_store(struct device *dev,
6665 struct device_attribute *attr,
6666 const char *buf, size_t count)
18ad7996 6667{
b21a15f6 6668 unsigned long s;
1c6a334e 6669 int rc;
b21a15f6 6670 u8 status, newlevel;
1c6a334e 6671
b21a15f6
HMH		 6672 if (parse_strtoul(buf, 255, &s))
6673 return -EINVAL;
6674
74a60c0f
HMH		 6675 tpacpi_disclose_usertask("hwmon pwm1",
6676 "set fan speed to %lu\n", s);
6677
b21a15f6
HMH		 6678 /* scale down from 0-255 to 0-7 */
6679 newlevel = (s >> 5) & 0x07;
ecf2a80a 6680
7646ea88 6681 if (mutex_lock_killable(&fan_mutex))
fc589a3c 6682 return -ERESTARTSYS;
40ca9fdf 6683
b21a15f6
HMH		 6684 rc = fan_get_status(&status);
6685 if (!rc && (status &
6686 (TP_EC_FAN_AUTO | TP_EC_FAN_FULLSPEED)) == 0) {
6687 rc = fan_set_level(newlevel);
6688 if (rc == -ENXIO)
6689 rc = -EINVAL;
6690 else if (!rc) {
6691 fan_update_desired_level(newlevel);
6692 fan_watchdog_reset();
eaa7571b 6693 }
b21a15f6 6694 }
1c6a334e 6695
b21a15f6
HMH		 6696 mutex_unlock(&fan_mutex);
6697 return (rc)? rc : count;
6698}
1c6a334e 6699
b21a15f6
HMH		 6700static struct device_attribute dev_attr_fan_pwm1 =
6701 __ATTR(pwm1, S_IWUSR | S_IRUGO,
6702 fan_pwm1_show, fan_pwm1_store);
1c6a334e 6703
b21a15f6
HMH		 6704/* sysfs fan fan1_input ------------------------------------------------ */
6705static ssize_t fan_fan1_input_show(struct device *dev,
6706 struct device_attribute *attr,
6707 char *buf)
6708{
6709 int res;
6710 unsigned int speed;
1c6a334e 6711
b21a15f6
HMH		 6712 res = fan_get_speed(&speed);
6713 if (res < 0)
6714 return res;
1c6a334e 6715
b21a15f6
HMH		 6716 return snprintf(buf, PAGE_SIZE, "%u\n", speed);
6717}
18ad7996 6718
b21a15f6
HMH		 6719static struct device_attribute dev_attr_fan_fan1_input =
6720 __ATTR(fan1_input, S_IRUGO,
6721 fan_fan1_input_show, NULL);
40ca9fdf 6722
d7377247
HMH		 6723/* sysfs fan fan2_input ------------------------------------------------ */
6724static ssize_t fan_fan2_input_show(struct device *dev,
6725 struct device_attribute *attr,
6726 char *buf)
6727{
6728 int res;
6729 unsigned int speed;
6730
6731 res = fan2_get_speed(&speed);
6732 if (res < 0)
6733 return res;
6734
6735 return snprintf(buf, PAGE_SIZE, "%u\n", speed);
6736}
6737
6738static struct device_attribute dev_attr_fan_fan2_input =
6739 __ATTR(fan2_input, S_IRUGO,
6740 fan_fan2_input_show, NULL);
6741
b21a15f6
HMH		 6742/* sysfs fan fan_watchdog (hwmon driver) ------------------------------- */
6743static ssize_t fan_fan_watchdog_show(struct device_driver *drv,
6744 char *buf)
6745{
6746 return snprintf(buf, PAGE_SIZE, "%u\n", fan_watchdog_maxinterval);
18ad7996
HMH		 6747}
6748
b21a15f6
HMH		 6749static ssize_t fan_fan_watchdog_store(struct device_driver *drv,
6750 const char *buf, size_t count)
18ad7996 6751{
b21a15f6
HMH		 6752 unsigned long t;
6753
6754 if (parse_strtoul(buf, 120, &t))
6755 return -EINVAL;
40ca9fdf 6756
ecf2a80a
HMH		 6757 if (!fan_control_allowed)
6758 return -EPERM;
6759
b21a15f6
HMH		 6760 fan_watchdog_maxinterval = t;
6761 fan_watchdog_reset();
40ca9fdf 6762
74a60c0f
HMH		 6763 tpacpi_disclose_usertask("fan_watchdog", "set to %lu\n", t);
6764
b21a15f6
HMH		 6765 return count;
6766}
6767
6768static DRIVER_ATTR(fan_watchdog, S_IWUSR | S_IRUGO,
6769 fan_fan_watchdog_show, fan_fan_watchdog_store);
6770
6771/* --------------------------------------------------------------------- */
6772static struct attribute *fan_attributes[] = {
6773 &dev_attr_fan_pwm1_enable.attr, &dev_attr_fan_pwm1.attr,
6774 &dev_attr_fan_fan1_input.attr,
d7377247 6775 NULL, /* for fan2_input */
b21a15f6
HMH		 6776 NULL
6777};
6778
6779static const struct attribute_group fan_attr_group = {
6780 .attrs = fan_attributes,
6781};
6782
d7377247
HMH		 6783#define TPACPI_FAN_Q1 0x0001 /* Unitialized HFSP */
6784#define TPACPI_FAN_2FAN 0x0002 /* EC 0x31 bit 0 selects fan2 */
7d95a3d5
HMH		 6785
6786#define TPACPI_FAN_QI(__id1, __id2, __quirks) \
6787 { .vendor = PCI_VENDOR_ID_IBM, \
6788 .bios = TPACPI_MATCH_ANY, \
6789 .ec = TPID(__id1, __id2), \
6790 .quirks = __quirks }
6791
d7377247
HMH		 6792#define TPACPI_FAN_QL(__id1, __id2, __quirks) \
6793 { .vendor = PCI_VENDOR_ID_LENOVO, \
6794 .bios = TPACPI_MATCH_ANY, \
6795 .ec = TPID(__id1, __id2), \
6796 .quirks = __quirks }
6797
7d95a3d5
HMH		 6798static const struct tpacpi_quirk fan_quirk_table[] __initconst = {
6799 TPACPI_FAN_QI('1', 'Y', TPACPI_FAN_Q1),
6800 TPACPI_FAN_QI('7', '8', TPACPI_FAN_Q1),
6801 TPACPI_FAN_QI('7', '6', TPACPI_FAN_Q1),
6802 TPACPI_FAN_QI('7', '0', TPACPI_FAN_Q1),
d7377247 6803 TPACPI_FAN_QL('7', 'M', TPACPI_FAN_2FAN),
7d95a3d5
HMH		 6804};
6805
d7377247 6806#undef TPACPI_FAN_QL
7d95a3d5
HMH		 6807#undef TPACPI_FAN_QI
6808
b21a15f6
HMH		 6809static int __init fan_init(struct ibm_init_struct *iibm)
6810{
6811 int rc;
7d95a3d5 6812 unsigned long quirks;
b21a15f6 6813
74a60c0f
HMH		 6814 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_FAN,
6815 "initializing fan subdriver\n");
b21a15f6
HMH		 6816
6817 mutex_init(&fan_mutex);
6818 fan_status_access_mode = TPACPI_FAN_NONE;
6819 fan_control_access_mode = TPACPI_FAN_WR_NONE;
6820 fan_control_commands = 0;
6821 fan_watchdog_maxinterval = 0;
6822 tp_features.fan_ctrl_status_undef = 0;
d7377247 6823 tp_features.second_fan = 0;
b21a15f6
HMH		 6824 fan_control_desired_level = 7;
6825
e0c7dfe7
HMH		 6826 TPACPI_ACPIHANDLE_INIT(fans);
6827 TPACPI_ACPIHANDLE_INIT(gfan);
6828 TPACPI_ACPIHANDLE_INIT(sfan);
b21a15f6 6829
7d95a3d5
HMH		 6830 quirks = tpacpi_check_quirks(fan_quirk_table,
6831 ARRAY_SIZE(fan_quirk_table));
6832
b21a15f6
HMH		 6833 if (gfan_handle) {
6834 /* 570, 600e/x, 770e, 770x */
6835 fan_status_access_mode = TPACPI_FAN_RD_ACPI_GFAN;
6836 } else {
6837 /* all other ThinkPads: note that even old-style
6838 * ThinkPad ECs supports the fan control register */
6839 if (likely(acpi_ec_read(fan_status_offset,
6840 &fan_control_initial_status))) {
6841 fan_status_access_mode = TPACPI_FAN_RD_TPEC;
7d95a3d5
HMH		 6842 if (quirks & TPACPI_FAN_Q1)
6843 fan_quirk1_setup();
d7377247
HMH		 6844 if (quirks & TPACPI_FAN_2FAN) {
6845 tp_features.second_fan = 1;
6846 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_FAN,
6847 "secondary fan support enabled\n");
6848 }
b21a15f6 6849 } else {
e0c7dfe7 6850 printk(TPACPI_ERR
b21a15f6
HMH		 6851 "ThinkPad ACPI EC access misbehaving, "
6852 "fan status and control unavailable\n");
6853 return 1;
6854 }
6855 }
6856
6857 if (sfan_handle) {
6858 /* 570, 770x-JL */
6859 fan_control_access_mode = TPACPI_FAN_WR_ACPI_SFAN;
6860 fan_control_commands |=
6861 TPACPI_FAN_CMD_LEVEL | TPACPI_FAN_CMD_ENABLE;
6862 } else {
6863 if (!gfan_handle) {
6864 /* gfan without sfan means no fan control */
6865 /* all other models implement TP EC 0x2f control */
6866
6867 if (fans_handle) {
6868 /* X31, X40, X41 */
6869 fan_control_access_mode =
6870 TPACPI_FAN_WR_ACPI_FANS;
6871 fan_control_commands |=
6872 TPACPI_FAN_CMD_SPEED |
6873 TPACPI_FAN_CMD_LEVEL |
6874 TPACPI_FAN_CMD_ENABLE;
6875 } else {
6876 fan_control_access_mode = TPACPI_FAN_WR_TPEC;
6877 fan_control_commands |=
6878 TPACPI_FAN_CMD_LEVEL |
6879 TPACPI_FAN_CMD_ENABLE;
6880 }
fe98a52c 6881 }
b21a15f6 6882 }
18ad7996 6883
74a60c0f
HMH		 6884 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_FAN,
6885 "fan is %s, modes %d, %d\n",
b21a15f6
HMH		 6886 str_supported(fan_status_access_mode != TPACPI_FAN_NONE ||
6887 fan_control_access_mode != TPACPI_FAN_WR_NONE),
6888 fan_status_access_mode, fan_control_access_mode);
1c6a334e 6889
b21a15f6
HMH		 6890 /* fan control master switch */
6891 if (!fan_control_allowed) {
6892 fan_control_access_mode = TPACPI_FAN_WR_NONE;
6893 fan_control_commands = 0;
74a60c0f 6894 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_FAN,
b21a15f6 6895 "fan control features disabled by parameter\n");
18ad7996 6896 }
40ca9fdf 6897
b21a15f6
HMH		 6898 /* update fan_control_desired_level */
6899 if (fan_status_access_mode != TPACPI_FAN_NONE)
6900 fan_get_status_safe(NULL);
fe98a52c 6901
b21a15f6
HMH		 6902 if (fan_status_access_mode != TPACPI_FAN_NONE ||
6903 fan_control_access_mode != TPACPI_FAN_WR_NONE) {
d7377247
HMH		 6904 if (tp_features.second_fan) {
6905 /* attach second fan tachometer */
6906 fan_attributes[ARRAY_SIZE(fan_attributes)-2] =
6907 &dev_attr_fan_fan2_input.attr;
6908 }
b21a15f6
HMH		 6909 rc = sysfs_create_group(&tpacpi_sensors_pdev->dev.kobj,
6910 &fan_attr_group);
b21a15f6
HMH		 6911 if (rc < 0)
6912 return rc;
9c0a76e1
HMH		 6913
6914 rc = driver_create_file(&tpacpi_hwmon_pdriver.driver,
6915 &driver_attr_fan_watchdog);
6916 if (rc < 0) {
6917 sysfs_remove_group(&tpacpi_sensors_pdev->dev.kobj,
6918 &fan_attr_group);
6919 return rc;
6920 }
b21a15f6
HMH		 6921 return 0;
6922 } else
6923 return 1;
56b6aeb0
HMH		 6924}
6925
b21a15f6 6926static void fan_exit(void)
56b6aeb0 6927{
74a60c0f 6928 vdbg_printk(TPACPI_DBG_EXIT | TPACPI_DBG_FAN,
35ff8b9f 6929 "cancelling any pending fan watchdog tasks\n");
56b6aeb0 6930
b21a15f6
HMH		 6931 /* FIXME: can we really do this unconditionally? */
6932 sysfs_remove_group(&tpacpi_sensors_pdev->dev.kobj, &fan_attr_group);
35ff8b9f
HMH		 6933 driver_remove_file(&tpacpi_hwmon_pdriver.driver,
6934 &driver_attr_fan_watchdog);
40ca9fdf 6935
b21a15f6 6936 cancel_delayed_work(&fan_watchdog_task);
e0e3c061 6937 flush_workqueue(tpacpi_wq);
56b6aeb0
HMH		 6938}
6939
75700e53
HMH		 6940static void fan_suspend(pm_message_t state)
6941{
0081b162
HMH		 6942 int rc;
6943
75700e53
HMH		 6944 if (!fan_control_allowed)
6945 return;
6946
6947 /* Store fan status in cache */
0081b162
HMH		 6948 fan_control_resume_level = 0;
6949 rc = fan_get_status_safe(&fan_control_resume_level);
6950 if (rc < 0)
6951 printk(TPACPI_NOTICE
6952 "failed to read fan level for later "
6953 "restore during resume: %d\n", rc);
6954
6955 /* if it is undefined, don't attempt to restore it.
6956 * KEEP THIS LAST */
75700e53 6957 if (tp_features.fan_ctrl_status_undef)
0081b162 6958 fan_control_resume_level = 0;
75700e53
HMH		 6959}
6960
6961static void fan_resume(void)
6962{
75700e53
HMH		 6963 u8 current_level = 7;
6964 bool do_set = false;
0081b162 6965 int rc;
75700e53
HMH		 6966
6967 /* DSDT *always* updates status on resume */
6968 tp_features.fan_ctrl_status_undef = 0;
6969
75700e53 6970 if (!fan_control_allowed ||
0081b162 6971 !fan_control_resume_level ||
75700e53
HMH		 6972 (fan_get_status_safe(&current_level) < 0))
6973 return;
6974
6975 switch (fan_control_access_mode) {
6976 case TPACPI_FAN_WR_ACPI_SFAN:
0081b162
HMH		 6977 /* never decrease fan level */
6978 do_set = (fan_control_resume_level > current_level);
75700e53
HMH		 6979 break;
6980 case TPACPI_FAN_WR_ACPI_FANS:
6981 case TPACPI_FAN_WR_TPEC:
0081b162
HMH		 6982 /* never decrease fan level, scale is:
6983 * TP_EC_FAN_FULLSPEED > 7 >= TP_EC_FAN_AUTO
6984 *
6985 * We expect the firmware to set either 7 or AUTO, but we
6986 * handle FULLSPEED out of paranoia.
6987 *
6988 * So, we can safely only restore FULLSPEED or 7, anything
6989 * else could slow the fan. Restoring AUTO is useless, at
6990 * best that's exactly what the DSDT already set (it is the
6991 * slower it uses).
6992 *
6993 * Always keep in mind that the DSDT *will* have set the
6994 * fans to what the vendor supposes is the best level. We
6995 * muck with it only to speed the fan up.
6996 */
6997 if (fan_control_resume_level != 7 &&
6998 !(fan_control_resume_level & TP_EC_FAN_FULLSPEED))
6999 return;
7000 else
7001 do_set = !(current_level & TP_EC_FAN_FULLSPEED) &&
7002 (current_level != fan_control_resume_level);
75700e53
HMH		 7003 break;
7004 default:
7005 return;
7006 }
7007 if (do_set) {
7008 printk(TPACPI_NOTICE
7009 "restoring fan level to 0x%02x\n",
0081b162
HMH		 7010 fan_control_resume_level);
7011 rc = fan_set_level_safe(fan_control_resume_level);
7012 if (rc < 0)
7013 printk(TPACPI_NOTICE
7014 "failed to restore fan level: %d\n", rc);
75700e53
HMH		 7015 }
7016}
7017
56b6aeb0
HMH		 7018static int fan_read(char *p)
7019{
7020 int len = 0;
7021 int rc;
7022 u8 status;
7023 unsigned int speed = 0;
7024
7025 switch (fan_status_access_mode) {
efa27145 7026 case TPACPI_FAN_RD_ACPI_GFAN:
56b6aeb0 7027 /* 570, 600e/x, 770e, 770x */
35ff8b9f
HMH		 7028 rc = fan_get_status_safe(&status);
7029 if (rc < 0)
56b6aeb0
HMH		 7030 return rc;
7031
7032 len += sprintf(p + len, "status:\t\t%s\n"
7033 "level:\t\t%d\n",
7034 (status != 0) ? "enabled" : "disabled", status);
7035 break;
7036
efa27145 7037 case TPACPI_FAN_RD_TPEC:
56b6aeb0 7038 /* all except 570, 600e/x, 770e, 770x */
35ff8b9f
HMH		 7039 rc = fan_get_status_safe(&status);
7040 if (rc < 0)
56b6aeb0
HMH		 7041 return rc;
7042
56b6aeb0
HMH		 7043 len += sprintf(p + len, "status:\t\t%s\n",
7044 (status != 0) ? "enabled" : "disabled");
7045
35ff8b9f
HMH		 7046 rc = fan_get_speed(&speed);
7047 if (rc < 0)
56b6aeb0
HMH		 7048 return rc;
7049
7050 len += sprintf(p + len, "speed:\t\t%d\n", speed);
7051
efa27145 7052 if (status & TP_EC_FAN_FULLSPEED)
56b6aeb0
HMH		 7053 /* Disengaged mode takes precedence */
7054 len += sprintf(p + len, "level:\t\tdisengaged\n");
efa27145 7055 else if (status & TP_EC_FAN_AUTO)
56b6aeb0
HMH		 7056 len += sprintf(p + len, "level:\t\tauto\n");
7057 else
7058 len += sprintf(p + len, "level:\t\t%d\n", status);
7059 break;
7060
efa27145 7061 case TPACPI_FAN_NONE:
56b6aeb0
HMH		 7062 default:
7063 len += sprintf(p + len, "status:\t\tnot supported\n");
7064 }
7065
efa27145 7066 if (fan_control_commands & TPACPI_FAN_CMD_LEVEL) {
56b6aeb0
HMH		 7067 len += sprintf(p + len, "commands:\tlevel <level>");
7068
7069 switch (fan_control_access_mode) {
efa27145 7070 case TPACPI_FAN_WR_ACPI_SFAN:
56b6aeb0
HMH		 7071 len += sprintf(p + len, " (<level> is 0-7)\n");
7072 break;
7073
7074 default:
7075 len += sprintf(p + len, " (<level> is 0-7, "
fe98a52c 7076 "auto, disengaged, full-speed)\n");
56b6aeb0
HMH		 7077 break;
7078 }
7079 }
18ad7996 7080
efa27145 7081 if (fan_control_commands & TPACPI_FAN_CMD_ENABLE)
56b6aeb0 7082 len += sprintf(p + len, "commands:\tenable, disable\n"
35ff8b9f
HMH		 7083 "commands:\twatchdog <timeout> (<timeout> "
7084 "is 0 (off), 1-120 (seconds))\n");
1da177e4 7085
efa27145 7086 if (fan_control_commands & TPACPI_FAN_CMD_SPEED)
56b6aeb0
HMH		 7087 len += sprintf(p + len, "commands:\tspeed <speed>"
7088 " (<speed> is 0-65535)\n");
7089
7090 return len;
78f81cc4
BD		 7091}
7092
18ad7996
HMH		 7093static int fan_write_cmd_level(const char *cmd, int *rc)
7094{
7095 int level;
7096
a12095c2 7097 if (strlencmp(cmd, "level auto") == 0)
efa27145 7098 level = TP_EC_FAN_AUTO;
fe98a52c 7099 else if ((strlencmp(cmd, "level disengaged") == 0) |
35ff8b9f 7100 (strlencmp(cmd, "level full-speed") == 0))
efa27145 7101 level = TP_EC_FAN_FULLSPEED;
a12095c2 7102 else if (sscanf(cmd, "level %d", &level) != 1)
18ad7996
HMH		 7103 return 0;
7104
35ff8b9f
HMH		 7105 *rc = fan_set_level_safe(level);
7106 if (*rc == -ENXIO)
e0c7dfe7 7107 printk(TPACPI_ERR "level command accepted for unsupported "
18ad7996 7108 "access mode %d", fan_control_access_mode);
74a60c0f
HMH		 7109 else if (!*rc)
7110 tpacpi_disclose_usertask("procfs fan",
7111 "set level to %d\n", level);
18ad7996
HMH		 7112
7113 return 1;
7114}
7115
7116static int fan_write_cmd_enable(const char *cmd, int *rc)
7117{
7118 if (strlencmp(cmd, "enable") != 0)
7119 return 0;
7120
35ff8b9f
HMH		 7121 *rc = fan_set_enable();
7122 if (*rc == -ENXIO)
e0c7dfe7 7123 printk(TPACPI_ERR "enable command accepted for unsupported "
18ad7996 7124 "access mode %d", fan_control_access_mode);
74a60c0f
HMH		 7125 else if (!*rc)
7126 tpacpi_disclose_usertask("procfs fan", "enable\n");
18ad7996
HMH		 7127
7128 return 1;
7129}
7130
7131static int fan_write_cmd_disable(const char *cmd, int *rc)
7132{
7133 if (strlencmp(cmd, "disable") != 0)
7134 return 0;
7135
35ff8b9f
HMH		 7136 *rc = fan_set_disable();
7137 if (*rc == -ENXIO)
e0c7dfe7 7138 printk(TPACPI_ERR "disable command accepted for unsupported "
18ad7996 7139 "access mode %d", fan_control_access_mode);
74a60c0f
HMH		 7140 else if (!*rc)
7141 tpacpi_disclose_usertask("procfs fan", "disable\n");
18ad7996
HMH		 7142
7143 return 1;
7144}
7145
7146static int fan_write_cmd_speed(const char *cmd, int *rc)
7147{
7148 int speed;
7149
a8b7a662
HMH		 7150 /* TODO:
7151 * Support speed <low> <medium> <high> ? */
7152
18ad7996
HMH		 7153 if (sscanf(cmd, "speed %d", &speed) != 1)
7154 return 0;
7155
35ff8b9f
HMH		 7156 *rc = fan_set_speed(speed);
7157 if (*rc == -ENXIO)
e0c7dfe7 7158 printk(TPACPI_ERR "speed command accepted for unsupported "
18ad7996 7159 "access mode %d", fan_control_access_mode);
74a60c0f
HMH		 7160 else if (!*rc)
7161 tpacpi_disclose_usertask("procfs fan",
7162 "set speed to %d\n", speed);
18ad7996
HMH		 7163
7164 return 1;
7165}
7166
16663a87
HMH		 7167static int fan_write_cmd_watchdog(const char *cmd, int *rc)
7168{
7169 int interval;
7170
7171 if (sscanf(cmd, "watchdog %d", &interval) != 1)
7172 return 0;
7173
7174 if (interval < 0 || interval > 120)
7175 *rc = -EINVAL;
74a60c0f 7176 else {
16663a87 7177 fan_watchdog_maxinterval = interval;
74a60c0f
HMH		 7178 tpacpi_disclose_usertask("procfs fan",
7179 "set watchdog timer to %d\n",
7180 interval);
7181 }
16663a87
HMH		 7182
7183 return 1;
7184}
7185
18ad7996
HMH		 7186static int fan_write(char *buf)
7187{
7188 char *cmd;
7189 int rc = 0;
7190
7191 while (!rc && (cmd = next_cmd(&buf))) {
efa27145 7192 if (!((fan_control_commands & TPACPI_FAN_CMD_LEVEL) &&
18ad7996 7193 fan_write_cmd_level(cmd, &rc)) &&
efa27145 7194 !((fan_control_commands & TPACPI_FAN_CMD_ENABLE) &&
18ad7996 7195 (fan_write_cmd_enable(cmd, &rc) ||
16663a87
HMH		 7196 fan_write_cmd_disable(cmd, &rc) ||
7197 fan_write_cmd_watchdog(cmd, &rc))) &&
efa27145 7198 !((fan_control_commands & TPACPI_FAN_CMD_SPEED) &&
18ad7996
HMH		 7199 fan_write_cmd_speed(cmd, &rc))
7200 )
7201 rc = -EINVAL;
16663a87
HMH		 7202 else if (!rc)
7203 fan_watchdog_reset();
18ad7996
HMH		 7204 }
7205
7206 return rc;
7207}
7208
a5763f22
HMH		 7209static struct ibm_struct fan_driver_data = {
7210 .name = "fan",
7211 .read = fan_read,
7212 .write = fan_write,
7213 .exit = fan_exit,
75700e53
HMH		 7214 .suspend = fan_suspend,
7215 .resume = fan_resume,
a5763f22
HMH		 7216};
7217
56b6aeb0
HMH		 7218/****************************************************************************
7219 ****************************************************************************
7220 *
7221 * Infrastructure
7222 *
7223 ****************************************************************************
7224 ****************************************************************************/
7225
7fd40029
HMH		 7226/* sysfs name ---------------------------------------------------------- */
7227static ssize_t thinkpad_acpi_pdev_name_show(struct device *dev,
7228 struct device_attribute *attr,
7229 char *buf)
7230{
e0c7dfe7 7231 return snprintf(buf, PAGE_SIZE, "%s\n", TPACPI_NAME);
7fd40029
HMH		 7232}
7233
7234static struct device_attribute dev_attr_thinkpad_acpi_pdev_name =
7235 __ATTR(name, S_IRUGO, thinkpad_acpi_pdev_name_show, NULL);
7236
7237/* --------------------------------------------------------------------- */
7238
56b6aeb0 7239/* /proc support */
94954cc6 7240static struct proc_dir_entry *proc_dir;
16663a87 7241
56b6aeb0
HMH		 7242/*
7243 * Module and infrastructure proble, init and exit handling
7244 */
1da177e4 7245
b21a15f6
HMH		 7246static int force_load;
7247
fe08bc4b 7248#ifdef CONFIG_THINKPAD_ACPI_DEBUG
a5763f22 7249static const char * __init str_supported(int is_supported)
fe08bc4b 7250{
a5763f22 7251 static char text_unsupported[] __initdata = "not supported";
fe08bc4b 7252
a5763f22 7253 return (is_supported)? &text_unsupported[4] : &text_unsupported[0];
fe08bc4b
HMH		 7254}
7255#endif /* CONFIG_THINKPAD_ACPI_DEBUG */
7256
b21a15f6
HMH		 7257static void ibm_exit(struct ibm_struct *ibm)
7258{
7259 dbg_printk(TPACPI_DBG_EXIT, "removing %s\n", ibm->name);
7260
7261 list_del_init(&ibm->all_drivers);
7262
7263 if (ibm->flags.acpi_notify_installed) {
7264 dbg_printk(TPACPI_DBG_EXIT,
7265 "%s: acpi_remove_notify_handler\n", ibm->name);
7266 BUG_ON(!ibm->acpi);
7267 acpi_remove_notify_handler(*ibm->acpi->handle,
7268 ibm->acpi->type,
7269 dispatch_acpi_notify);
7270 ibm->flags.acpi_notify_installed = 0;
7271 ibm->flags.acpi_notify_installed = 0;
7272 }
7273
7274 if (ibm->flags.proc_created) {
7275 dbg_printk(TPACPI_DBG_EXIT,
7276 "%s: remove_proc_entry\n", ibm->name);
7277 remove_proc_entry(ibm->name, proc_dir);
7278 ibm->flags.proc_created = 0;
7279 }
7280
7281 if (ibm->flags.acpi_driver_registered) {
7282 dbg_printk(TPACPI_DBG_EXIT,
7283 "%s: acpi_bus_unregister_driver\n", ibm->name);
7284 BUG_ON(!ibm->acpi);
7285 acpi_bus_unregister_driver(ibm->acpi->driver);
7286 kfree(ibm->acpi->driver);
7287 ibm->acpi->driver = NULL;
7288 ibm->flags.acpi_driver_registered = 0;
7289 }
7290
7291 if (ibm->flags.init_called && ibm->exit) {
7292 ibm->exit();
7293 ibm->flags.init_called = 0;
7294 }
7295
7296 dbg_printk(TPACPI_DBG_INIT, "finished removing %s\n", ibm->name);
7297}
f74a27d4 7298
a5763f22 7299static int __init ibm_init(struct ibm_init_struct *iibm)
1da177e4
LT		 7300{
7301 int ret;
a5763f22 7302 struct ibm_struct *ibm = iibm->data;
1da177e4
LT		 7303 struct proc_dir_entry *entry;
7304
a5763f22
HMH		 7305 BUG_ON(ibm == NULL);
7306
7307 INIT_LIST_HEAD(&ibm->all_drivers);
7308
92641177 7309 if (ibm->flags.experimental && !experimental)
1da177e4
LT		 7310 return 0;
7311
fe08bc4b
HMH		 7312 dbg_printk(TPACPI_DBG_INIT,
7313 "probing for %s\n", ibm->name);
7314
a5763f22
HMH		 7315 if (iibm->init) {
7316 ret = iibm->init(iibm);
5fba344c
HMH		 7317 if (ret > 0)
7318 return 0; /* probe failed */
7319 if (ret)
1da177e4 7320 return ret;
a5763f22 7321
92641177 7322 ibm->flags.init_called = 1;
1da177e4
LT		 7323 }
7324
8d376cd6
HMH		 7325 if (ibm->acpi) {
7326 if (ibm->acpi->hid) {
7327 ret = register_tpacpi_subdriver(ibm);
7328 if (ret)
7329 goto err_out;
7330 }
5fba344c 7331
8d376cd6
HMH		 7332 if (ibm->acpi->notify) {
7333 ret = setup_acpi_notify(ibm);
7334 if (ret == -ENODEV) {
e0c7dfe7 7335 printk(TPACPI_NOTICE "disabling subdriver %s\n",
8d376cd6
HMH		 7336 ibm->name);
7337 ret = 0;
7338 goto err_out;
7339 }
7340 if (ret < 0)
7341 goto err_out;
5fba344c 7342 }
5fba344c
HMH		 7343 }
7344
fe08bc4b
HMH		 7345 dbg_printk(TPACPI_DBG_INIT,
7346 "%s installed\n", ibm->name);
7347
78f81cc4
BD		 7348 if (ibm->read) {
7349 entry = create_proc_entry(ibm->name,
7350 S_IFREG | S_IRUGO | S_IWUSR,
7351 proc_dir);
7352 if (!entry) {
e0c7dfe7 7353 printk(TPACPI_ERR "unable to create proc entry %s\n",
78f81cc4 7354 ibm->name);
5fba344c
HMH		 7355 ret = -ENODEV;
7356 goto err_out;
78f81cc4 7357 }
78f81cc4 7358 entry->data = ibm;
8d376cd6 7359 entry->read_proc = &dispatch_procfs_read;
78f81cc4 7360 if (ibm->write)
8d376cd6 7361 entry->write_proc = &dispatch_procfs_write;
92641177 7362 ibm->flags.proc_created = 1;
78f81cc4 7363 }
1da177e4 7364
a5763f22
HMH		 7365 list_add_tail(&ibm->all_drivers, &tpacpi_all_drivers);
7366
1da177e4 7367 return 0;
5fba344c
HMH		 7368
7369err_out:
fe08bc4b
HMH		 7370 dbg_printk(TPACPI_DBG_INIT,
7371 "%s: at error exit path with result %d\n",
7372 ibm->name, ret);
7373
5fba344c
HMH		 7374 ibm_exit(ibm);
7375 return (ret < 0)? ret : 0;
1da177e4
LT		 7376}
7377
56b6aeb0
HMH		 7378/* Probing */
7379
050df107
HMH		 7380static bool __pure __init tpacpi_is_fw_digit(const char c)
7381{
7382 return (c >= '0' && c <= '9') || (c >= 'A' && c <= 'Z');
7383}
7384
7385/* Most models: xxyTkkWW (#.##c); Ancient 570/600 and -SL lacks (#.##c) */
7386static bool __pure __init tpacpi_is_valid_fw_id(const char* const s,
7387 const char t)
7388{
7389 return s && strlen(s) >= 8 &&
7390 tpacpi_is_fw_digit(s[0]) &&
7391 tpacpi_is_fw_digit(s[1]) &&
7392 s[2] == t && s[3] == 'T' &&
7393 tpacpi_is_fw_digit(s[4]) &&
7394 tpacpi_is_fw_digit(s[5]) &&
7395 s[6] == 'W' && s[7] == 'W';
7396}
7397
bf20e740
HMH		 7398/* returns 0 - probe ok, or < 0 - probe error.
7399 * Probe ok doesn't mean thinkpad found.
7400 * On error, kfree() cleanup on tp->* is not performed, caller must do it */
7401static int __must_check __init get_thinkpad_model_data(
7402 struct thinkpad_id_data *tp)
1da177e4 7403{
1855256c 7404 const struct dmi_device *dev = NULL;
56b6aeb0 7405 char ec_fw_string[18];
bf20e740 7406 char const *s;
1da177e4 7407
d5a2f2f1 7408 if (!tp)
bf20e740 7409 return -EINVAL;
d5a2f2f1
HMH		 7410
7411 memset(tp, 0, sizeof(*tp));
7412
7413 if (dmi_name_in_vendors("IBM"))
7414 tp->vendor = PCI_VENDOR_ID_IBM;
7415 else if (dmi_name_in_vendors("LENOVO"))
7416 tp->vendor = PCI_VENDOR_ID_LENOVO;
7417 else
bf20e740 7418 return 0;
d5a2f2f1 7419
bf20e740
HMH		 7420 s = dmi_get_system_info(DMI_BIOS_VERSION);
7421 tp->bios_version_str = kstrdup(s, GFP_KERNEL);
7422 if (s && !tp->bios_version_str)
7423 return -ENOMEM;
050df107
HMH		 7424
7425 /* Really ancient ThinkPad 240X will fail this, which is fine */
7426 if (!tpacpi_is_valid_fw_id(tp->bios_version_str, 'E'))
bf20e740 7427 return 0;
050df107 7428
d5a2f2f1
HMH		 7429 tp->bios_model = tp->bios_version_str[0]
7430 | (tp->bios_version_str[1] << 8);
050df107
HMH		 7431 tp->bios_release = (tp->bios_version_str[4] << 8)
7432 | tp->bios_version_str[5];
d5a2f2f1 7433
56b6aeb0
HMH		 7434 /*
7435 * ThinkPad T23 or newer, A31 or newer, R50e or newer,
7436 * X32 or newer, all Z series; Some models must have an
7437 * up-to-date BIOS or they will not be detected.
7438 *
7439 * See http://thinkwiki.org/wiki/List_of_DMI_IDs
7440 */
7441 while ((dev = dmi_find_device(DMI_DEV_TYPE_OEM_STRING, NULL, dev))) {
7442 if (sscanf(dev->name,
7443 "IBM ThinkPad Embedded Controller -[%17c",
7444 ec_fw_string) == 1) {
7445 ec_fw_string[sizeof(ec_fw_string) - 1] = 0;
7446 ec_fw_string[strcspn(ec_fw_string, " ]")] = 0;
d5a2f2f1
HMH		 7447
7448 tp->ec_version_str = kstrdup(ec_fw_string, GFP_KERNEL);
bf20e740
HMH		 7449 if (!tp->ec_version_str)
7450 return -ENOMEM;
050df107
HMH		 7451
7452 if (tpacpi_is_valid_fw_id(ec_fw_string, 'H')) {
7453 tp->ec_model = ec_fw_string[0]
7454 | (ec_fw_string[1] << 8);
7455 tp->ec_release = (ec_fw_string[4] << 8)
7456 | ec_fw_string[5];
7457 } else {
7458 printk(TPACPI_NOTICE
7459 "ThinkPad firmware release %s "
7460 "doesn't match the known patterns\n",
7461 ec_fw_string);
7462 printk(TPACPI_NOTICE
7463 "please report this to %s\n",
7464 TPACPI_MAIL);
7465 }
d5a2f2f1 7466 break;
78f81cc4 7467 }
1da177e4 7468 }
d5a2f2f1 7469
bf20e740
HMH		 7470 s = dmi_get_system_info(DMI_PRODUCT_VERSION);
7471 if (s && !strnicmp(s, "ThinkPad", 8)) {
7472 tp->model_str = kstrdup(s, GFP_KERNEL);
7473 if (!tp->model_str)
7474 return -ENOMEM;
d5a2f2f1 7475 }
8c74adbc 7476
bf20e740
HMH		 7477 s = dmi_get_system_info(DMI_PRODUCT_NAME);
7478 tp->nummodel_str = kstrdup(s, GFP_KERNEL);
7479 if (s && !tp->nummodel_str)
7480 return -ENOMEM;
7481
7482 return 0;
1da177e4
LT		 7483}
7484
5fba344c
HMH		 7485static int __init probe_for_thinkpad(void)
7486{
7487 int is_thinkpad;
7488
7489 if (acpi_disabled)
7490 return -ENODEV;
7491
7492 /*
7493 * Non-ancient models have better DMI tagging, but very old models
7494 * don't.
7495 */
d5a2f2f1 7496 is_thinkpad = (thinkpad_id.model_str != NULL);
5fba344c
HMH		 7497
7498 /* ec is required because many other handles are relative to it */
e0c7dfe7 7499 TPACPI_ACPIHANDLE_INIT(ec);
5fba344c
HMH		 7500 if (!ec_handle) {
7501 if (is_thinkpad)
e0c7dfe7 7502 printk(TPACPI_ERR
5fba344c
HMH		 7503 "Not yet supported ThinkPad detected!\n");
7504 return -ENODEV;
7505 }
7506
0dcef77c
HMH		 7507 /*
7508 * Risks a regression on very old machines, but reduces potential
7509 * false positives a damn great deal
7510 */
7511 if (!is_thinkpad)
d5a2f2f1 7512 is_thinkpad = (thinkpad_id.vendor == PCI_VENDOR_ID_IBM);
0dcef77c
HMH		 7513
7514 if (!is_thinkpad && !force_load)
7515 return -ENODEV;
7516
5fba344c
HMH		 7517 return 0;
7518}
7519
7520
56b6aeb0 7521/* Module init, exit, parameters */
1da177e4 7522
a5763f22
HMH		 7523static struct ibm_init_struct ibms_init[] __initdata = {
7524 {
7525 .init = thinkpad_acpi_driver_init,
7526 .data = &thinkpad_acpi_driver_data,
7527 },
7528 {
7529 .init = hotkey_init,
7530 .data = &hotkey_driver_data,
7531 },
7532 {
7533 .init = bluetooth_init,
7534 .data = &bluetooth_driver_data,
7535 },
7536 {
7537 .init = wan_init,
7538 .data = &wan_driver_data,
7539 },
0045c0aa
HMH		 7540 {
7541 .init = uwb_init,
7542 .data = &uwb_driver_data,
7543 },
d7c1d17d 7544#ifdef CONFIG_THINKPAD_ACPI_VIDEO
a5763f22
HMH		 7545 {
7546 .init = video_init,
7547 .data = &video_driver_data,
7548 },
d7c1d17d 7549#endif
a5763f22
HMH		 7550 {
7551 .init = light_init,
7552 .data = &light_driver_data,
7553 },
a5763f22
HMH		 7554 {
7555 .init = cmos_init,
7556 .data = &cmos_driver_data,
7557 },
7558 {
7559 .init = led_init,
7560 .data = &led_driver_data,
7561 },
7562 {
7563 .init = beep_init,
7564 .data = &beep_driver_data,
7565 },
7566 {
7567 .init = thermal_init,
7568 .data = &thermal_driver_data,
7569 },
7570 {
7571 .data = &ecdump_driver_data,
7572 },
7573 {
7574 .init = brightness_init,
7575 .data = &brightness_driver_data,
7576 },
7577 {
7578 .data = &volume_driver_data,
7579 },
7580 {
7581 .init = fan_init,
7582 .data = &fan_driver_data,
7583 },
7584};
7585
3945ac36 7586static int __init set_ibm_param(const char *val, struct kernel_param *kp)
1da177e4
LT		 7587{
7588 unsigned int i;
a5763f22 7589 struct ibm_struct *ibm;
1da177e4 7590
59f91ff1
HMH		 7591 if (!kp || !kp->name || !val)
7592 return -EINVAL;
7593
a5763f22
HMH		 7594 for (i = 0; i < ARRAY_SIZE(ibms_init); i++) {
7595 ibm = ibms_init[i].data;
59f91ff1
HMH		 7596 WARN_ON(ibm == NULL);
7597
7598 if (!ibm || !ibm->name)
7599 continue;
a5763f22
HMH		 7600
7601 if (strcmp(ibm->name, kp->name) == 0 && ibm->write) {
7602 if (strlen(val) > sizeof(ibms_init[i].param) - 2)
78f81cc4 7603 return -ENOSPC;
a5763f22
HMH		 7604 strcpy(ibms_init[i].param, val);
7605 strcat(ibms_init[i].param, ",");
78f81cc4
BD		 7606 return 0;
7607 }
a5763f22 7608 }
1da177e4 7609
1da177e4
LT		 7610 return -EINVAL;
7611}
7612
56b6aeb0 7613module_param(experimental, int, 0);
f68080f8 7614MODULE_PARM_DESC(experimental,
35ff8b9f 7615 "Enables experimental features when non-zero");
56b6aeb0 7616
132ce091 7617module_param_named(debug, dbg_level, uint, 0);
f68080f8 7618MODULE_PARM_DESC(debug, "Sets debug level bit-mask");
132ce091 7619
86cc9445 7620module_param(force_load, bool, 0);
f68080f8 7621MODULE_PARM_DESC(force_load,
35ff8b9f
HMH		 7622 "Attempts to load the driver even on a "
7623 "mis-identified ThinkPad when true");
0dcef77c 7624
86cc9445 7625module_param_named(fan_control, fan_control_allowed, bool, 0);
f68080f8 7626MODULE_PARM_DESC(fan_control,
35ff8b9f 7627 "Enables setting fan parameters features when true");
ecf2a80a 7628
0e501834 7629module_param_named(brightness_mode, brightness_mode, uint, 0);
f68080f8 7630MODULE_PARM_DESC(brightness_mode,
35ff8b9f 7631 "Selects brightness control strategy: "
0e501834 7632 "0=auto, 1=EC, 2=UCMS, 3=EC+NVRAM");
24d3b774 7633
87cc537a 7634module_param(brightness_enable, uint, 0);
f68080f8 7635MODULE_PARM_DESC(brightness_enable,
35ff8b9f 7636 "Enables backlight control when 1, disables when 0");
87cc537a 7637
ff80f137 7638module_param(hotkey_report_mode, uint, 0);
f68080f8 7639MODULE_PARM_DESC(hotkey_report_mode,
35ff8b9f
HMH		 7640 "used for backwards compatibility with userspace, "
7641 "see documentation");
ff80f137 7642
e0c7dfe7 7643#define TPACPI_PARAM(feature) \
f68080f8 7644 module_param_call(feature, set_ibm_param, NULL, NULL, 0); \
cbb14842 7645 MODULE_PARM_DESC(feature, "Simulates thinkpad-acpi procfs command " \
35ff8b9f 7646 "at module load, see documentation")
1da177e4 7647
e0c7dfe7
HMH		 7648TPACPI_PARAM(hotkey);
7649TPACPI_PARAM(bluetooth);
7650TPACPI_PARAM(video);
7651TPACPI_PARAM(light);
e0c7dfe7
HMH		 7652TPACPI_PARAM(cmos);
7653TPACPI_PARAM(led);
7654TPACPI_PARAM(beep);
7655TPACPI_PARAM(ecdump);
7656TPACPI_PARAM(brightness);
7657TPACPI_PARAM(volume);
7658TPACPI_PARAM(fan);
78f81cc4 7659
a73f3091
HMH		 7660#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
7661module_param(dbg_wlswemul, uint, 0);
7662MODULE_PARM_DESC(dbg_wlswemul, "Enables WLSW emulation");
7663module_param_named(wlsw_state, tpacpi_wlsw_emulstate, bool, 0);
7664MODULE_PARM_DESC(wlsw_state,
7665 "Initial state of the emulated WLSW switch");
7666
7667module_param(dbg_bluetoothemul, uint, 0);
7668MODULE_PARM_DESC(dbg_bluetoothemul, "Enables bluetooth switch emulation");
7669module_param_named(bluetooth_state, tpacpi_bluetooth_emulstate, bool, 0);
7670MODULE_PARM_DESC(bluetooth_state,
7671 "Initial state of the emulated bluetooth switch");
7672
7673module_param(dbg_wwanemul, uint, 0);
7674MODULE_PARM_DESC(dbg_wwanemul, "Enables WWAN switch emulation");
7675module_param_named(wwan_state, tpacpi_wwan_emulstate, bool, 0);
7676MODULE_PARM_DESC(wwan_state,
7677 "Initial state of the emulated WWAN switch");
0045c0aa
HMH		 7678
7679module_param(dbg_uwbemul, uint, 0);
7680MODULE_PARM_DESC(dbg_uwbemul, "Enables UWB switch emulation");
7681module_param_named(uwb_state, tpacpi_uwb_emulstate, bool, 0);
7682MODULE_PARM_DESC(uwb_state,
7683 "Initial state of the emulated UWB switch");
a73f3091
HMH		 7684#endif
7685
b21a15f6
HMH		 7686static void thinkpad_acpi_module_exit(void)
7687{
7688 struct ibm_struct *ibm, *itmp;
7689
7690 tpacpi_lifecycle = TPACPI_LIFE_EXITING;
7691
7692 list_for_each_entry_safe_reverse(ibm, itmp,
7693 &tpacpi_all_drivers,
7694 all_drivers) {
7695 ibm_exit(ibm);
7696 }
7697
7698 dbg_printk(TPACPI_DBG_INIT, "finished subdriver exit path...\n");
7699
7700 if (tpacpi_inputdev) {
7701 if (tp_features.input_device_registered)
7702 input_unregister_device(tpacpi_inputdev);
7703 else
7704 input_free_device(tpacpi_inputdev);
7705 }
7706
7707 if (tpacpi_hwmon)
7708 hwmon_device_unregister(tpacpi_hwmon);
7709
7710 if (tp_features.sensors_pdev_attrs_registered)
7711 device_remove_file(&tpacpi_sensors_pdev->dev,
7712 &dev_attr_thinkpad_acpi_pdev_name);
7713 if (tpacpi_sensors_pdev)
7714 platform_device_unregister(tpacpi_sensors_pdev);
7715 if (tpacpi_pdev)
7716 platform_device_unregister(tpacpi_pdev);
7717
7718 if (tp_features.sensors_pdrv_attrs_registered)
7719 tpacpi_remove_driver_attributes(&tpacpi_hwmon_pdriver.driver);
7720 if (tp_features.platform_drv_attrs_registered)
7721 tpacpi_remove_driver_attributes(&tpacpi_pdriver.driver);
7722
7723 if (tp_features.sensors_pdrv_registered)
7724 platform_driver_unregister(&tpacpi_hwmon_pdriver);
7725
7726 if (tp_features.platform_drv_registered)
7727 platform_driver_unregister(&tpacpi_pdriver);
7728
7729 if (proc_dir)
e0c7dfe7 7730 remove_proc_entry(TPACPI_PROC_DIR, acpi_root_dir);
b21a15f6 7731
e0e3c061
HMH		 7732 if (tpacpi_wq)
7733 destroy_workqueue(tpacpi_wq);
7734
b21a15f6
HMH		 7735 kfree(thinkpad_id.bios_version_str);
7736 kfree(thinkpad_id.ec_version_str);
7737 kfree(thinkpad_id.model_str);
7738}
7739
f74a27d4 7740
1def7115 7741static int __init thinkpad_acpi_module_init(void)
1da177e4
LT		 7742{
7743 int ret, i;
7744
8fef502e
HMH		 7745 tpacpi_lifecycle = TPACPI_LIFE_INIT;
7746
ff80f137
HMH		 7747 /* Parameter checking */
7748 if (hotkey_report_mode > 2)
7749 return -EINVAL;
7750
54ae1501 7751 /* Driver-level probe */
d5a2f2f1 7752
bf20e740
HMH		 7753 ret = get_thinkpad_model_data(&thinkpad_id);
7754 if (ret) {
7755 printk(TPACPI_ERR
7756 "unable to get DMI data: %d\n", ret);
7757 thinkpad_acpi_module_exit();
7758 return ret;
7759 }
5fba344c 7760 ret = probe_for_thinkpad();
d5a2f2f1
HMH		 7761 if (ret) {
7762 thinkpad_acpi_module_exit();
5fba344c 7763 return ret;
d5a2f2f1 7764 }
1da177e4 7765
54ae1501 7766 /* Driver initialization */
d5a2f2f1 7767
e0c7dfe7
HMH		 7768 TPACPI_ACPIHANDLE_INIT(ecrd);
7769 TPACPI_ACPIHANDLE_INIT(ecwr);
1da177e4 7770
e0e3c061
HMH		 7771 tpacpi_wq = create_singlethread_workqueue(TPACPI_WORKQUEUE_NAME);
7772 if (!tpacpi_wq) {
7773 thinkpad_acpi_module_exit();
7774 return -ENOMEM;
7775 }
7776
e0c7dfe7 7777 proc_dir = proc_mkdir(TPACPI_PROC_DIR, acpi_root_dir);
1da177e4 7778 if (!proc_dir) {
35ff8b9f
HMH		 7779 printk(TPACPI_ERR
7780 "unable to create proc dir " TPACPI_PROC_DIR);
1def7115 7781 thinkpad_acpi_module_exit();
1da177e4
LT		 7782 return -ENODEV;
7783 }
78f81cc4 7784
54ae1501
HMH		 7785 ret = platform_driver_register(&tpacpi_pdriver);
7786 if (ret) {
35ff8b9f
HMH		 7787 printk(TPACPI_ERR
7788 "unable to register main platform driver\n");
54ae1501
HMH		 7789 thinkpad_acpi_module_exit();
7790 return ret;
7791 }
ac36393d
HMH		 7792 tp_features.platform_drv_registered = 1;
7793
7fd40029
HMH		 7794 ret = platform_driver_register(&tpacpi_hwmon_pdriver);
7795 if (ret) {
35ff8b9f
HMH		 7796 printk(TPACPI_ERR
7797 "unable to register hwmon platform driver\n");
7fd40029
HMH		 7798 thinkpad_acpi_module_exit();
7799 return ret;
7800 }
7801 tp_features.sensors_pdrv_registered = 1;
7802
176750d6 7803 ret = tpacpi_create_driver_attributes(&tpacpi_pdriver.driver);
2369cc94
HMH		 7804 if (!ret) {
7805 tp_features.platform_drv_attrs_registered = 1;
35ff8b9f
HMH		 7806 ret = tpacpi_create_driver_attributes(
7807 &tpacpi_hwmon_pdriver.driver);
2369cc94 7808 }
176750d6 7809 if (ret) {
35ff8b9f
HMH		 7810 printk(TPACPI_ERR
7811 "unable to create sysfs driver attributes\n");
176750d6
HMH		 7812 thinkpad_acpi_module_exit();
7813 return ret;
7814 }
2369cc94 7815 tp_features.sensors_pdrv_attrs_registered = 1;
176750d6 7816
54ae1501
HMH		 7817
7818 /* Device initialization */
e0c7dfe7 7819 tpacpi_pdev = platform_device_register_simple(TPACPI_DRVR_NAME, -1,
54ae1501
HMH		 7820 NULL, 0);
7821 if (IS_ERR(tpacpi_pdev)) {
7822 ret = PTR_ERR(tpacpi_pdev);
7823 tpacpi_pdev = NULL;
e0c7dfe7 7824 printk(TPACPI_ERR "unable to register platform device\n");
54ae1501
HMH		 7825 thinkpad_acpi_module_exit();
7826 return ret;
7827 }
7fd40029 7828 tpacpi_sensors_pdev = platform_device_register_simple(
35ff8b9f
HMH		 7829 TPACPI_HWMON_DRVR_NAME,
7830 -1, NULL, 0);
7fd40029
HMH		 7831 if (IS_ERR(tpacpi_sensors_pdev)) {
7832 ret = PTR_ERR(tpacpi_sensors_pdev);
7833 tpacpi_sensors_pdev = NULL;
35ff8b9f
HMH		 7834 printk(TPACPI_ERR
7835 "unable to register hwmon platform device\n");
7fd40029
HMH		 7836 thinkpad_acpi_module_exit();
7837 return ret;
7838 }
7839 ret = device_create_file(&tpacpi_sensors_pdev->dev,
7840 &dev_attr_thinkpad_acpi_pdev_name);
7841 if (ret) {
e0c7dfe7 7842 printk(TPACPI_ERR
35ff8b9f 7843 "unable to create sysfs hwmon device attributes\n");
7fd40029
HMH		 7844 thinkpad_acpi_module_exit();
7845 return ret;
7846 }
7847 tp_features.sensors_pdev_attrs_registered = 1;
7848 tpacpi_hwmon = hwmon_device_register(&tpacpi_sensors_pdev->dev);
54ae1501
HMH		 7849 if (IS_ERR(tpacpi_hwmon)) {
7850 ret = PTR_ERR(tpacpi_hwmon);
7851 tpacpi_hwmon = NULL;
e0c7dfe7 7852 printk(TPACPI_ERR "unable to register hwmon device\n");
54ae1501
HMH		 7853 thinkpad_acpi_module_exit();
7854 return ret;
7855 }
8523ed6f 7856 mutex_init(&tpacpi_inputdev_send_mutex);
7f5d1cd6
HMH		 7857 tpacpi_inputdev = input_allocate_device();
7858 if (!tpacpi_inputdev) {
e0c7dfe7 7859 printk(TPACPI_ERR "unable to allocate input device\n");
7f5d1cd6
HMH		 7860 thinkpad_acpi_module_exit();
7861 return -ENOMEM;
7862 } else {
7863 /* Prepare input device, but don't register */
7864 tpacpi_inputdev->name = "ThinkPad Extra Buttons";
e0c7dfe7 7865 tpacpi_inputdev->phys = TPACPI_DRVR_NAME "/input0";
7f5d1cd6 7866 tpacpi_inputdev->id.bustype = BUS_HOST;
edf0e0e5
HMH		 7867 tpacpi_inputdev->id.vendor = (thinkpad_id.vendor) ?
7868 thinkpad_id.vendor :
7869 PCI_VENDOR_ID_IBM;
7f5d1cd6
HMH		 7870 tpacpi_inputdev->id.product = TPACPI_HKEY_INPUT_PRODUCT;
7871 tpacpi_inputdev->id.version = TPACPI_HKEY_INPUT_VERSION;
7872 }
a5763f22
HMH		 7873 for (i = 0; i < ARRAY_SIZE(ibms_init); i++) {
7874 ret = ibm_init(&ibms_init[i]);
7875 if (ret >= 0 && *ibms_init[i].param)
7876 ret = ibms_init[i].data->write(ibms_init[i].param);
1da177e4 7877 if (ret < 0) {
1def7115 7878 thinkpad_acpi_module_exit();
1da177e4
LT		 7879 return ret;
7880 }
7881 }
7f5d1cd6
HMH		 7882 ret = input_register_device(tpacpi_inputdev);
7883 if (ret < 0) {
e0c7dfe7 7884 printk(TPACPI_ERR "unable to register input device\n");
7f5d1cd6
HMH		 7885 thinkpad_acpi_module_exit();
7886 return ret;
7887 } else {
7888 tp_features.input_device_registered = 1;
7889 }
1da177e4 7890
8fef502e 7891 tpacpi_lifecycle = TPACPI_LIFE_RUNNING;
1da177e4
LT		 7892 return 0;
7893}
7894
95e57ab2
HMH		 7895MODULE_ALIAS(TPACPI_DRVR_SHORTNAME);
7896
922fe097
HMH		 7897/*
7898 * This will autoload the driver in almost every ThinkPad
7899 * in widespread use.
7900 *
7901 * Only _VERY_ old models, like the 240, 240x and 570 lack
7902 * the HKEY event interface.
7903 */
7904MODULE_DEVICE_TABLE(acpi, ibm_htk_device_ids);
7905
f68080f8
HMH		 7906/*
7907 * DMI matching for module autoloading
7908 *
7909 * See http://thinkwiki.org/wiki/List_of_DMI_IDs
7910 * See http://thinkwiki.org/wiki/BIOS_Upgrade_Downloads
7911 *
7912 * Only models listed in thinkwiki will be supported, so add yours
7913 * if it is not there yet.
7914 */
7915#define IBM_BIOS_MODULE_ALIAS(__type) \
b36a50f9 7916 MODULE_ALIAS("dmi:bvnIBM:bvr" __type "ET??WW*")
f68080f8 7917
f68080f8
HMH		 7918/* Ancient thinkpad BIOSes have to be identified by
7919 * BIOS type or model number, and there are far less
7920 * BIOS types than model numbers... */
922fe097 7921IBM_BIOS_MODULE_ALIAS("I[MU]"); /* 570, 570e */
f68080f8 7922
f68f53a2
HMH		 7923MODULE_AUTHOR("Borislav Deianov <borislav@users.sf.net>");
7924MODULE_AUTHOR("Henrique de Moraes Holschuh <hmh@hmh.eng.br>");
e0c7dfe7
HMH		 7925MODULE_DESCRIPTION(TPACPI_DESC);
7926MODULE_VERSION(TPACPI_VERSION);
f68080f8
HMH		 7927MODULE_LICENSE("GPL");
7928
1def7115
HMH		 7929module_init(thinkpad_acpi_module_init);
7930module_exit(thinkpad_acpi_module_exit);
ubuntu-bionic-kernel mirror