projects / deliverable / linux.git / blame
? search:
summary | shortlog | log | commit | commitdiff | tree
blob | blame (incremental) | history | HEAD
thinkpad-acpi: silence hotkey enable warning for module parameter
[deliverable/linux.git] / drivers / platform / x86 / thinkpad_acpi.c
CommitLineData
1da177e4 1/*
643f12db 2 * thinkpad_acpi.c - ThinkPad ACPI Extras
1da177e4
LT		 3 *
4 *
78f81cc4 5 * Copyright (C) 2004-2005 Borislav Deianov <borislav@users.sf.net>
1c762ca4 6 * Copyright (C) 2006-2009 Henrique de Moraes Holschuh <hmh@hmh.eng.br>
1da177e4
LT		 7 *
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
12 *
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
17 *
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
a62bc916
HMH		 20 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
21 * 02110-1301, USA.
78f81cc4
BD		 22 */
23
aa2fbcec 24#define TPACPI_VERSION "0.22"
2586d566 25#define TPACPI_SYSFS_VERSION 0x020300
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
0e74dc26
HMH		 169/* rfkill switches */
170enum {
171 TPACPI_RFK_BLUETOOTH_SW_ID = 0,
172 TPACPI_RFK_WWAN_SW_ID,
0045c0aa 173 TPACPI_RFK_UWB_SW_ID,
0e74dc26
HMH		 174};
175
7ff8d62f 176/* printk headers */
e0c7dfe7 177#define TPACPI_LOG TPACPI_FILE ": "
7ff8d62f
HMH		 178#define TPACPI_EMERG KERN_EMERG TPACPI_LOG
179#define TPACPI_ALERT KERN_ALERT TPACPI_LOG
180#define TPACPI_CRIT KERN_CRIT TPACPI_LOG
181#define TPACPI_ERR KERN_ERR TPACPI_LOG
182#define TPACPI_WARN KERN_WARNING TPACPI_LOG
183#define TPACPI_NOTICE KERN_NOTICE TPACPI_LOG
184#define TPACPI_INFO KERN_INFO TPACPI_LOG
185#define TPACPI_DEBUG KERN_DEBUG TPACPI_LOG
186
187/* Debugging printk groups */
0c78039f 188#define TPACPI_DBG_ALL 0xffff
73a94d86 189#define TPACPI_DBG_DISCLOSETASK 0x8000
0c78039f
HMH		 190#define TPACPI_DBG_INIT 0x0001
191#define TPACPI_DBG_EXIT 0x0002
bee4cd9b 192#define TPACPI_DBG_RFKILL 0x0004
56e2c200 193#define TPACPI_DBG_HKEY 0x0008
74a60c0f 194#define TPACPI_DBG_FAN 0x0010
0e501834 195#define TPACPI_DBG_BRGHT 0x0020
0c78039f 196
35ff8b9f
HMH		 197#define onoff(status, bit) ((status) & (1 << (bit)) ? "on" : "off")
198#define enabled(status, bit) ((status) & (1 << (bit)) ? "enabled" : "disabled")
199#define strlencmp(a, b) (strncmp((a), (b), strlen(b)))
0c78039f 200
0c78039f
HMH		 201
202/****************************************************************************
b21a15f6 203 * Driver-wide structs and misc. variables
0c78039f
HMH		 204 */
205
206struct ibm_struct;
207
208struct tp_acpi_drv_struct {
209 const struct acpi_device_id *hid;
210 struct acpi_driver *driver;
211
212 void (*notify) (struct ibm_struct *, u32);
213 acpi_handle *handle;
214 u32 type;
215 struct acpi_device *device;
216};
217
218struct ibm_struct {
219 char *name;
220
221 int (*read) (char *);
222 int (*write) (char *);
223 void (*exit) (void);
224 void (*resume) (void);
083f1760 225 void (*suspend) (pm_message_t state);
90d9d3c7 226 void (*shutdown) (void);
0c78039f
HMH		 227
228 struct list_head all_drivers;
229
230 struct tp_acpi_drv_struct *acpi;
231
232 struct {
233 u8 acpi_driver_registered:1;
234 u8 acpi_notify_installed:1;
235 u8 proc_created:1;
236 u8 init_called:1;
237 u8 experimental:1;
238 } flags;
239};
240
241struct ibm_init_struct {
242 char param[32];
243
244 int (*init) (struct ibm_init_struct *);
245 struct ibm_struct *data;
246};
247
248static struct {
249#ifdef CONFIG_THINKPAD_ACPI_BAY
250 u32 bay_status:1;
251 u32 bay_eject:1;
252 u32 bay_status2:1;
253 u32 bay_eject2:1;
254#endif
255 u32 bluetooth:1;
256 u32 hotkey:1;
257 u32 hotkey_mask:1;
258 u32 hotkey_wlsw:1;
6c231bd5 259 u32 hotkey_tablet:1;
0c78039f
HMH		 260 u32 light:1;
261 u32 light_status:1;
262 u32 bright_16levels:1;
b5972796 263 u32 bright_acpimode:1;
0c78039f 264 u32 wan:1;
0045c0aa 265 u32 uwb:1;
0c78039f
HMH		 266 u32 fan_ctrl_status_undef:1;
267 u32 input_device_registered:1;
268 u32 platform_drv_registered:1;
269 u32 platform_drv_attrs_registered:1;
270 u32 sensors_pdrv_registered:1;
271 u32 sensors_pdrv_attrs_registered:1;
272 u32 sensors_pdev_attrs_registered:1;
273 u32 hotkey_poll_active:1;
274} tp_features;
275
92889022
HMH		 276static struct {
277 u16 hotkey_mask_ff:1;
278} tp_warned;
279
0c78039f
HMH		 280struct thinkpad_id_data {
281 unsigned int vendor; /* ThinkPad vendor:
282 * PCI_VENDOR_ID_IBM/PCI_VENDOR_ID_LENOVO */
283
284 char *bios_version_str; /* Something like 1ZET51WW (1.03z) */
285 char *ec_version_str; /* Something like 1ZHT51WW-1.04a */
286
287 u16 bios_model; /* Big Endian, TP-1Y = 0x5931, 0 = unknown */
288 u16 ec_model;
289
8c74adbc
HMH		 290 char *model_str; /* ThinkPad T43 */
291 char *nummodel_str; /* 9384A9C for a 9384-A9C model */
0c78039f 292};
0c78039f
HMH		 293static struct thinkpad_id_data thinkpad_id;
294
8fef502e
HMH		 295static enum {
296 TPACPI_LIFE_INIT = 0,
297 TPACPI_LIFE_RUNNING,
298 TPACPI_LIFE_EXITING,
299} tpacpi_lifecycle;
300
b21a15f6
HMH		 301static int experimental;
302static u32 dbg_level;
303
e0e3c061
HMH		 304static struct workqueue_struct *tpacpi_wq;
305
4fa6811b
HMH		 306/* Special LED class that can defer work */
307struct tpacpi_led_classdev {
308 struct led_classdev led_classdev;
309 struct work_struct work;
310 enum led_brightness new_brightness;
af116101 311 unsigned int led;
4fa6811b
HMH		 312};
313
a73f3091
HMH		 314#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
315static int dbg_wlswemul;
316static int tpacpi_wlsw_emulstate;
317static int dbg_bluetoothemul;
318static int tpacpi_bluetooth_emulstate;
319static int dbg_wwanemul;
320static int tpacpi_wwan_emulstate;
0045c0aa
HMH		 321static int dbg_uwbemul;
322static int tpacpi_uwb_emulstate;
a73f3091
HMH		 323#endif
324
325
3dcc2c3b
HMH		 326/*************************************************************************
327 * Debugging helpers
328 */
329
330#define dbg_printk(a_dbg_level, format, arg...) \
331 do { if (dbg_level & (a_dbg_level)) \
332 printk(TPACPI_DEBUG "%s: " format, __func__ , ## arg); \
333 } while (0)
334
335#ifdef CONFIG_THINKPAD_ACPI_DEBUG
336#define vdbg_printk dbg_printk
337static const char *str_supported(int is_supported);
338#else
339#define vdbg_printk(a_dbg_level, format, arg...) \
340 do { } while (0)
341#endif
342
73a94d86
HMH		 343static void tpacpi_log_usertask(const char * const what)
344{
345 printk(TPACPI_DEBUG "%s: access by process with PID %d\n",
346 what, task_tgid_vnr(current));
347}
348
349#define tpacpi_disclose_usertask(what, format, arg...) \
350 do { \
351 if (unlikely( \
352 (dbg_level & TPACPI_DBG_DISCLOSETASK) && \
353 (tpacpi_lifecycle == TPACPI_LIFE_RUNNING))) { \
354 printk(TPACPI_DEBUG "%s: PID %d: " format, \
355 what, task_tgid_vnr(current), ## arg); \
356 } \
357 } while (0)
3dcc2c3b 358
56b6aeb0
HMH		 359/****************************************************************************
360 ****************************************************************************
361 *
362 * ACPI Helpers and device model
363 *
364 ****************************************************************************
365 ****************************************************************************/
366
367/*************************************************************************
368 * ACPI basic handles
369 */
1da177e4 370
94954cc6 371static acpi_handle root_handle;
1da177e4 372
e0c7dfe7 373#define TPACPI_HANDLE(object, parent, paths...) \
1da177e4
LT		 374 static acpi_handle object##_handle; \
375 static acpi_handle *object##_parent = &parent##_handle; \
78f81cc4 376 static char *object##_path; \
1da177e4
LT		 377 static char *object##_paths[] = { paths }
378
e0c7dfe7 379TPACPI_HANDLE(ec, root, "\\_SB.PCI0.ISA.EC0", /* 240, 240x */
78f81cc4
BD		 380 "\\_SB.PCI.ISA.EC", /* 570 */
381 "\\_SB.PCI0.ISA0.EC0", /* 600e/x, 770e, 770x */
382 "\\_SB.PCI0.ISA.EC", /* A21e, A2xm/p, T20-22, X20-21 */
383 "\\_SB.PCI0.AD4S.EC0", /* i1400, R30 */
384 "\\_SB.PCI0.ICH3.EC0", /* R31 */
385 "\\_SB.PCI0.LPC.EC", /* all others */
56b6aeb0 386 );
78f81cc4 387
e0c7dfe7
HMH		 388TPACPI_HANDLE(ecrd, ec, "ECRD"); /* 570 */
389TPACPI_HANDLE(ecwr, ec, "ECWR"); /* 570 */
78f81cc4 390
35ff8b9f
HMH		 391TPACPI_HANDLE(cmos, root, "\\UCMS", /* R50, R50e, R50p, R51, */
392 /* T4x, X31, X40 */
78f81cc4
BD		 393 "\\CMOS", /* A3x, G4x, R32, T23, T30, X22-24, X30 */
394 "\\CMS", /* R40, R40e */
56b6aeb0 395 ); /* all others */
78f81cc4 396
e0c7dfe7 397TPACPI_HANDLE(hkey, ec, "\\_SB.HKEY", /* 600e/x, 770e, 770x */
78f81cc4
BD		 398 "^HKEY", /* R30, R31 */
399 "HKEY", /* all others */
56b6aeb0 400 ); /* 570 */
78f81cc4 401
d7c1d17d
HMH		 402TPACPI_HANDLE(vid, root, "\\_SB.PCI.AGP.VGA", /* 570 */
403 "\\_SB.PCI0.AGP0.VID0", /* 600e/x, 770x */
404 "\\_SB.PCI0.VID0", /* 770e */
405 "\\_SB.PCI0.VID", /* A21e, G4x, R50e, X30, X40 */
406 "\\_SB.PCI0.AGP.VID", /* all others */
407 ); /* R30, R31 */
408
78f81cc4 409
56b6aeb0
HMH		 410/*************************************************************************
411 * ACPI helpers
a8b7a662
HMH		 412 */
413
1da177e4
LT		 414static int acpi_evalf(acpi_handle handle,
415 void *res, char *method, char *fmt, ...)
416{
417 char *fmt0 = fmt;
78f81cc4 418 struct acpi_object_list params;
e0c7dfe7 419 union acpi_object in_objs[TPACPI_MAX_ACPI_ARGS];
78f81cc4
BD		 420 struct acpi_buffer result, *resultp;
421 union acpi_object out_obj;
422 acpi_status status;
423 va_list ap;
424 char res_type;
425 int success;
426 int quiet;
1da177e4
LT		 427
428 if (!*fmt) {
e0c7dfe7 429 printk(TPACPI_ERR "acpi_evalf() called with empty format\n");
1da177e4
LT		 430 return 0;
431 }
432
433 if (*fmt == 'q') {
434 quiet = 1;
435 fmt++;
436 } else
437 quiet = 0;
438
439 res_type = *(fmt++);
440
441 params.count = 0;
442 params.pointer = &in_objs[0];
443
444 va_start(ap, fmt);
445 while (*fmt) {
446 char c = *(fmt++);
447 switch (c) {
448 case 'd': /* int */
449 in_objs[params.count].integer.value = va_arg(ap, int);
450 in_objs[params.count++].type = ACPI_TYPE_INTEGER;
451 break;
78f81cc4 452 /* add more types as needed */
1da177e4 453 default:
e0c7dfe7 454 printk(TPACPI_ERR "acpi_evalf() called "
1da177e4
LT		 455 "with invalid format character '%c'\n", c);
456 return 0;
457 }
458 }
459 va_end(ap);
460
78f81cc4
BD		 461 if (res_type != 'v') {
462 result.length = sizeof(out_obj);
463 result.pointer = &out_obj;
464 resultp = &result;
465 } else
466 resultp = NULL;
1da177e4 467
78f81cc4 468 status = acpi_evaluate_object(handle, method, &params, resultp);
1da177e4
LT		 469
470 switch (res_type) {
78f81cc4 471 case 'd': /* int */
1da177e4
LT		 472 if (res)
473 *(int *)res = out_obj.integer.value;
474 success = status == AE_OK && out_obj.type == ACPI_TYPE_INTEGER;
475 break;
78f81cc4 476 case 'v': /* void */
1da177e4
LT		 477 success = status == AE_OK;
478 break;
78f81cc4 479 /* add more types as needed */
1da177e4 480 default:
e0c7dfe7 481 printk(TPACPI_ERR "acpi_evalf() called "
1da177e4
LT		 482 "with invalid format character '%c'\n", res_type);
483 return 0;
484 }
485
56b6aeb0 486 if (!success && !quiet)
e0c7dfe7 487 printk(TPACPI_ERR "acpi_evalf(%s, %s, ...) failed: %d\n",
56b6aeb0
HMH		 488 method, fmt0, status);
489
490 return success;
491}
492
35ff8b9f 493static int acpi_ec_read(int i, u8 *p)
56b6aeb0
HMH		 494{
495 int v;
496
497 if (ecrd_handle) {
498 if (!acpi_evalf(ecrd_handle, &v, NULL, "dd", i))
499 return 0;
500 *p = v;
501 } else {
502 if (ec_read(i, p) < 0)
503 return 0;
504 }
505
506 return 1;
507}
508
509static int acpi_ec_write(int i, u8 v)
510{
511 if (ecwr_handle) {
512 if (!acpi_evalf(ecwr_handle, NULL, NULL, "vdd", i, v))
513 return 0;
514 } else {
515 if (ec_write(i, v) < 0)
516 return 0;
517 }
518
519 return 1;
520}
521
013c40e4 522#if defined(CONFIG_THINKPAD_ACPI_DOCK) || defined(CONFIG_THINKPAD_ACPI_BAY)
56b6aeb0
HMH		 523static int _sta(acpi_handle handle)
524{
525 int status;
526
527 if (!handle || !acpi_evalf(handle, &status, "_STA", "d"))
528 status = 0;
529
530 return status;
531}
013c40e4 532#endif
56b6aeb0 533
c9bea99c
HMH		 534static int issue_thinkpad_cmos_command(int cmos_cmd)
535{
536 if (!cmos_handle)
537 return -ENXIO;
538
539 if (!acpi_evalf(cmos_handle, NULL, NULL, "vd", cmos_cmd))
540 return -EIO;
541
542 return 0;
543}
544
56b6aeb0
HMH		 545/*************************************************************************
546 * ACPI device model
547 */
548
35ff8b9f
HMH		 549#define TPACPI_ACPIHANDLE_INIT(object) \
550 drv_acpi_handle_init(#object, &object##_handle, *object##_parent, \
f74a27d4
HMH		 551 object##_paths, ARRAY_SIZE(object##_paths), &object##_path)
552
8d376cd6 553static void drv_acpi_handle_init(char *name,
5fba344c
HMH		 554 acpi_handle *handle, acpi_handle parent,
555 char **paths, int num_paths, char **path)
56b6aeb0
HMH		 556{
557 int i;
558 acpi_status status;
559
5ae930e6
HMH		 560 vdbg_printk(TPACPI_DBG_INIT, "trying to locate ACPI handle for %s\n",
561 name);
562
56b6aeb0
HMH		 563 for (i = 0; i < num_paths; i++) {
564 status = acpi_get_handle(parent, paths[i], handle);
565 if (ACPI_SUCCESS(status)) {
566 *path = paths[i];
5ae930e6
HMH		 567 dbg_printk(TPACPI_DBG_INIT,
568 "Found ACPI handle %s for %s\n",
569 *path, name);
56b6aeb0
HMH		 570 return;
571 }
572 }
573
5ae930e6
HMH		 574 vdbg_printk(TPACPI_DBG_INIT, "ACPI handle for %s not found\n",
575 name);
56b6aeb0
HMH		 576 *handle = NULL;
577}
578
8d376cd6 579static void dispatch_acpi_notify(acpi_handle handle, u32 event, void *data)
56b6aeb0
HMH		 580{
581 struct ibm_struct *ibm = data;
582
8fef502e
HMH		 583 if (tpacpi_lifecycle != TPACPI_LIFE_RUNNING)
584 return;
585
8d376cd6 586 if (!ibm || !ibm->acpi || !ibm->acpi->notify)
56b6aeb0
HMH		 587 return;
588
8d376cd6 589 ibm->acpi->notify(ibm, event);
56b6aeb0
HMH		 590}
591
8d376cd6 592static int __init setup_acpi_notify(struct ibm_struct *ibm)
56b6aeb0
HMH		 593{
594 acpi_status status;
5ae930e6 595 int rc;
56b6aeb0 596
8d376cd6
HMH		 597 BUG_ON(!ibm->acpi);
598
599 if (!*ibm->acpi->handle)
56b6aeb0
HMH		 600 return 0;
601
5ae930e6 602 vdbg_printk(TPACPI_DBG_INIT,
fe08bc4b
HMH		 603 "setting up ACPI notify for %s\n", ibm->name);
604
5ae930e6
HMH		 605 rc = acpi_bus_get_device(*ibm->acpi->handle, &ibm->acpi->device);
606 if (rc < 0) {
e0c7dfe7 607 printk(TPACPI_ERR "acpi_bus_get_device(%s) failed: %d\n",
5ae930e6 608 ibm->name, rc);
56b6aeb0
HMH		 609 return -ENODEV;
610 }
611
db89b4f0 612 ibm->acpi->device->driver_data = ibm;
8d376cd6 613 sprintf(acpi_device_class(ibm->acpi->device), "%s/%s",
e0c7dfe7 614 TPACPI_ACPI_EVENT_PREFIX,
643f12db 615 ibm->name);
56b6aeb0 616
8d376cd6
HMH		 617 status = acpi_install_notify_handler(*ibm->acpi->handle,
618 ibm->acpi->type, dispatch_acpi_notify, ibm);
56b6aeb0
HMH		 619 if (ACPI_FAILURE(status)) {
620 if (status == AE_ALREADY_EXISTS) {
35ff8b9f
HMH		 621 printk(TPACPI_NOTICE
622 "another device driver is already "
623 "handling %s events\n", ibm->name);
56b6aeb0 624 } else {
35ff8b9f
HMH		 625 printk(TPACPI_ERR
626 "acpi_install_notify_handler(%s) failed: %d\n",
627 ibm->name, status);
56b6aeb0
HMH		 628 }
629 return -ENODEV;
630 }
8d376cd6 631 ibm->flags.acpi_notify_installed = 1;
56b6aeb0
HMH		 632 return 0;
633}
634
8d376cd6 635static int __init tpacpi_device_add(struct acpi_device *device)
56b6aeb0
HMH		 636{
637 return 0;
638}
639
6700121b 640static int __init register_tpacpi_subdriver(struct ibm_struct *ibm)
56b6aeb0 641{
5ae930e6 642 int rc;
56b6aeb0 643
fe08bc4b
HMH		 644 dbg_printk(TPACPI_DBG_INIT,
645 "registering %s as an ACPI driver\n", ibm->name);
646
8d376cd6
HMH		 647 BUG_ON(!ibm->acpi);
648
649 ibm->acpi->driver = kzalloc(sizeof(struct acpi_driver), GFP_KERNEL);
650 if (!ibm->acpi->driver) {
4f778b92
MK		 651 printk(TPACPI_ERR
652 "failed to allocate memory for ibm->acpi->driver\n");
5fba344c 653 return -ENOMEM;
56b6aeb0
HMH		 654 }
655
e0c7dfe7 656 sprintf(ibm->acpi->driver->name, "%s_%s", TPACPI_NAME, ibm->name);
8d376cd6 657 ibm->acpi->driver->ids = ibm->acpi->hid;
1ba90e3a 658
8d376cd6 659 ibm->acpi->driver->ops.add = &tpacpi_device_add;
56b6aeb0 660
5ae930e6
HMH		 661 rc = acpi_bus_register_driver(ibm->acpi->driver);
662 if (rc < 0) {
e0c7dfe7 663 printk(TPACPI_ERR "acpi_bus_register_driver(%s) failed: %d\n",
1ba90e3a 664 ibm->name, rc);
8d376cd6
HMH		 665 kfree(ibm->acpi->driver);
666 ibm->acpi->driver = NULL;
5ae930e6 667 } else if (!rc)
8d376cd6 668 ibm->flags.acpi_driver_registered = 1;
56b6aeb0 669
5ae930e6 670 return rc;
56b6aeb0
HMH		 671}
672
673
674/****************************************************************************
675 ****************************************************************************
676 *
677 * Procfs Helpers
678 *
679 ****************************************************************************
680 ****************************************************************************/
681
8d376cd6
HMH		 682static int dispatch_procfs_read(char *page, char **start, off_t off,
683 int count, int *eof, void *data)
56b6aeb0
HMH		 684{
685 struct ibm_struct *ibm = data;
686 int len;
687
688 if (!ibm || !ibm->read)
689 return -EINVAL;
690
691 len = ibm->read(page);
692 if (len < 0)
693 return len;
694
695 if (len <= off + count)
696 *eof = 1;
697 *start = page + off;
698 len -= off;
699 if (len > count)
700 len = count;
701 if (len < 0)
702 len = 0;
703
704 return len;
705}
706
8d376cd6 707static int dispatch_procfs_write(struct file *file,
35ff8b9f 708 const char __user *userbuf,
8d376cd6 709 unsigned long count, void *data)
56b6aeb0
HMH		 710{
711 struct ibm_struct *ibm = data;
712 char *kernbuf;
713 int ret;
714
715 if (!ibm || !ibm->write)
716 return -EINVAL;
717
718 kernbuf = kmalloc(count + 2, GFP_KERNEL);
719 if (!kernbuf)
720 return -ENOMEM;
1da177e4 721
56b6aeb0
HMH		 722 if (copy_from_user(kernbuf, userbuf, count)) {
723 kfree(kernbuf);
724 return -EFAULT;
725 }
1da177e4 726
56b6aeb0
HMH		 727 kernbuf[count] = 0;
728 strcat(kernbuf, ",");
729 ret = ibm->write(kernbuf);
730 if (ret == 0)
731 ret = count;
1da177e4 732
56b6aeb0
HMH		 733 kfree(kernbuf);
734
735 return ret;
1da177e4
LT		 736}
737
738static char *next_cmd(char **cmds)
739{
740 char *start = *cmds;
741 char *end;
742
743 while ((end = strchr(start, ',')) && end == start)
744 start = end + 1;
745
746 if (!end)
747 return NULL;
748
749 *end = 0;
750 *cmds = end + 1;
751 return start;
752}
753
56b6aeb0 754
54ae1501
HMH		 755/****************************************************************************
756 ****************************************************************************
757 *
7f5d1cd6 758 * Device model: input, hwmon and platform
54ae1501
HMH		 759 *
760 ****************************************************************************
761 ****************************************************************************/
762
94954cc6 763static struct platform_device *tpacpi_pdev;
7fd40029 764static struct platform_device *tpacpi_sensors_pdev;
1beeffe4 765static struct device *tpacpi_hwmon;
7f5d1cd6 766static struct input_dev *tpacpi_inputdev;
8523ed6f 767static struct mutex tpacpi_inputdev_send_mutex;
b21a15f6 768static LIST_HEAD(tpacpi_all_drivers);
e295e850 769
083f1760
HMH		 770static int tpacpi_suspend_handler(struct platform_device *pdev,
771 pm_message_t state)
772{
773 struct ibm_struct *ibm, *itmp;
774
775 list_for_each_entry_safe(ibm, itmp,
776 &tpacpi_all_drivers,
777 all_drivers) {
778 if (ibm->suspend)
779 (ibm->suspend)(state);
780 }
781
782 return 0;
783}
784
e295e850
HMH		 785static int tpacpi_resume_handler(struct platform_device *pdev)
786{
787 struct ibm_struct *ibm, *itmp;
788
789 list_for_each_entry_safe(ibm, itmp,
790 &tpacpi_all_drivers,
791 all_drivers) {
792 if (ibm->resume)
793 (ibm->resume)();
794 }
795
796 return 0;
797}
798
90d9d3c7
HMH		 799static void tpacpi_shutdown_handler(struct platform_device *pdev)
800{
801 struct ibm_struct *ibm, *itmp;
802
803 list_for_each_entry_safe(ibm, itmp,
804 &tpacpi_all_drivers,
805 all_drivers) {
806 if (ibm->shutdown)
807 (ibm->shutdown)();
808 }
809}
810
54ae1501
HMH		 811static struct platform_driver tpacpi_pdriver = {
812 .driver = {
e0c7dfe7 813 .name = TPACPI_DRVR_NAME,
54ae1501
HMH		 814 .owner = THIS_MODULE,
815 },
083f1760 816 .suspend = tpacpi_suspend_handler,
e295e850 817 .resume = tpacpi_resume_handler,
90d9d3c7 818 .shutdown = tpacpi_shutdown_handler,
54ae1501
HMH		 819};
820
7fd40029
HMH		 821static struct platform_driver tpacpi_hwmon_pdriver = {
822 .driver = {
e0c7dfe7 823 .name = TPACPI_HWMON_DRVR_NAME,
7fd40029
HMH		 824 .owner = THIS_MODULE,
825 },
826};
54ae1501 827
176750d6 828/*************************************************************************
b21a15f6 829 * sysfs support helpers
176750d6
HMH		 830 */
831
b21a15f6
HMH		 832struct attribute_set {
833 unsigned int members, max_members;
834 struct attribute_group group;
176750d6
HMH		 835};
836
7252374a
HMH		 837struct attribute_set_obj {
838 struct attribute_set s;
839 struct attribute *a;
840} __attribute__((packed));
841
842static struct attribute_set *create_attr_set(unsigned int max_members,
35ff8b9f 843 const char *name)
7252374a
HMH		 844{
845 struct attribute_set_obj *sobj;
846
847 if (max_members == 0)
848 return NULL;
849
850 /* Allocates space for implicit NULL at the end too */
851 sobj = kzalloc(sizeof(struct attribute_set_obj) +
852 max_members * sizeof(struct attribute *),
853 GFP_KERNEL);
854 if (!sobj)
855 return NULL;
856 sobj->s.max_members = max_members;
857 sobj->s.group.attrs = &sobj->a;
858 sobj->s.group.name = name;
859
860 return &sobj->s;
861}
862
f74a27d4
HMH		 863#define destroy_attr_set(_set) \
864 kfree(_set);
865
7252374a 866/* not multi-threaded safe, use it in a single thread per set */
35ff8b9f 867static int add_to_attr_set(struct attribute_set *s, struct attribute *attr)
7252374a
HMH		 868{
869 if (!s || !attr)
870 return -EINVAL;
871
872 if (s->members >= s->max_members)
873 return -ENOMEM;
874
875 s->group.attrs[s->members] = attr;
876 s->members++;
877
878 return 0;
879}
880
35ff8b9f 881static int add_many_to_attr_set(struct attribute_set *s,
7252374a
HMH		 882 struct attribute **attr,
883 unsigned int count)
884{
885 int i, res;
886
887 for (i = 0; i < count; i++) {
888 res = add_to_attr_set(s, attr[i]);
889 if (res)
890 return res;
891 }
892
893 return 0;
894}
895
35ff8b9f 896static void delete_attr_set(struct attribute_set *s, struct kobject *kobj)
7252374a
HMH		 897{
898 sysfs_remove_group(kobj, &s->group);
899 destroy_attr_set(s);
900}
901
f74a27d4
HMH		 902#define register_attr_set_with_sysfs(_attr_set, _kobj) \
903 sysfs_create_group(_kobj, &_attr_set->group)
904
7252374a
HMH		 905static int parse_strtoul(const char *buf,
906 unsigned long max, unsigned long *value)
907{
908 char *endp;
909
32afbf07
HMH		 910 while (*buf && isspace(*buf))
911 buf++;
7252374a
HMH		 912 *value = simple_strtoul(buf, &endp, 0);
913 while (*endp && isspace(*endp))
914 endp++;
915 if (*endp || *value > max)
916 return -EINVAL;
917
918 return 0;
919}
920
d64c81c4
HMH		 921static void tpacpi_disable_brightness_delay(void)
922{
923 if (acpi_evalf(hkey_handle, NULL, "PWMS", "qvd", 0))
924 printk(TPACPI_NOTICE
925 "ACPI backlight control delay disabled\n");
926}
927
b5972796
HMH		 928static int __init tpacpi_query_bcl_levels(acpi_handle handle)
929{
930 struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
931 union acpi_object *obj;
932 int rc;
933
934 if (ACPI_SUCCESS(acpi_evaluate_object(handle, NULL, NULL, &buffer))) {
935 obj = (union acpi_object *)buffer.pointer;
936 if (!obj || (obj->type != ACPI_TYPE_PACKAGE)) {
937 printk(TPACPI_ERR "Unknown _BCL data, "
938 "please report this to %s\n", TPACPI_MAIL);
939 rc = 0;
940 } else {
941 rc = obj->package.count;
942 }
943 } else {
944 return 0;
945 }
946
947 kfree(buffer.pointer);
948 return rc;
949}
950
951static acpi_status __init tpacpi_acpi_walk_find_bcl(acpi_handle handle,
952 u32 lvl, void *context, void **rv)
953{
954 char name[ACPI_PATH_SEGMENT_LENGTH];
955 struct acpi_buffer buffer = { sizeof(name), &name };
956
957 if (ACPI_SUCCESS(acpi_get_name(handle, ACPI_SINGLE_NAME, &buffer)) &&
958 !strncmp("_BCL", name, sizeof(name) - 1)) {
959 BUG_ON(!rv || !*rv);
960 **(int **)rv = tpacpi_query_bcl_levels(handle);
961 return AE_CTRL_TERMINATE;
962 } else {
963 return AE_OK;
964 }
965}
966
967/*
968 * Returns 0 (no ACPI _BCL or _BCL invalid), or size of brightness map
969 */
970static int __init tpacpi_check_std_acpi_brightness_support(void)
971{
972 int status;
973 int bcl_levels = 0;
974 void *bcl_ptr = &bcl_levels;
975
976 if (!vid_handle) {
977 TPACPI_ACPIHANDLE_INIT(vid);
978 }
979 if (!vid_handle)
980 return 0;
981
982 /*
983 * Search for a _BCL method, and execute it. This is safe on all
984 * ThinkPads, and as a side-effect, _BCL will place a Lenovo Vista
985 * BIOS in ACPI backlight control mode. We do NOT have to care
986 * about calling the _BCL method in an enabled video device, any
987 * will do for our purposes.
988 */
989
990 status = acpi_walk_namespace(ACPI_TYPE_METHOD, vid_handle, 3,
991 tpacpi_acpi_walk_find_bcl, NULL,
992 &bcl_ptr);
993
994 if (ACPI_SUCCESS(status) && bcl_levels > 2) {
995 tp_features.bright_acpimode = 1;
996 return (bcl_levels - 2);
997 }
998
999 return 0;
1000}
1001
0e74dc26
HMH		 1002static int __init tpacpi_new_rfkill(const unsigned int id,
1003 struct rfkill **rfk,
1004 const enum rfkill_type rfktype,
1005 const char *name,
0045c0aa 1006 const bool set_default,
0e74dc26
HMH		 1007 int (*toggle_radio)(void *, enum rfkill_state),
1008 int (*get_state)(void *, enum rfkill_state *))
1009{
1010 int res;
90d9d3c7
HMH		 1011 enum rfkill_state initial_state = RFKILL_STATE_SOFT_BLOCKED;
1012
1013 res = get_state(NULL, &initial_state);
1014 if (res < 0) {
1015 printk(TPACPI_ERR
1016 "failed to read initial state for %s, error %d; "
1017 "will turn radio off\n", name, res);
0045c0aa 1018 } else if (set_default) {
90d9d3c7
HMH		 1019 /* try to set the initial state as the default for the rfkill
1020 * type, since we ask the firmware to preserve it across S5 in
1021 * NVRAM */
bee4cd9b 1022 if (rfkill_set_default(rfktype,
90d9d3c7
HMH		 1023 (initial_state == RFKILL_STATE_UNBLOCKED) ?
1024 RFKILL_STATE_UNBLOCKED :
bee4cd9b
HMH		 1025 RFKILL_STATE_SOFT_BLOCKED) == -EPERM)
1026 vdbg_printk(TPACPI_DBG_RFKILL,
1027 "Default state for %s cannot be changed\n",
1028 name);
90d9d3c7 1029 }
0e74dc26
HMH		 1030
1031 *rfk = rfkill_allocate(&tpacpi_pdev->dev, rfktype);
1032 if (!*rfk) {
1033 printk(TPACPI_ERR
1034 "failed to allocate memory for rfkill class\n");
1035 return -ENOMEM;
1036 }
1037
1038 (*rfk)->name = name;
1039 (*rfk)->get_state = get_state;
1040 (*rfk)->toggle_radio = toggle_radio;
90d9d3c7 1041 (*rfk)->state = initial_state;
0e74dc26
HMH		 1042
1043 res = rfkill_register(*rfk);
1044 if (res < 0) {
1045 printk(TPACPI_ERR
1046 "failed to register %s rfkill switch: %d\n",
1047 name, res);
1048 rfkill_free(*rfk);
1049 *rfk = NULL;
1050 return res;
1051 }
1052
1053 return 0;
1054}
1055
73a94d86
HMH		 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
1065static void printk_deprecated_rfkill_attribute(const char * const what)
1066{
1067 printk_deprecated_attribute(what,
1068 "Please switch to generic rfkill before year 2010");
1069}
1070
56b6aeb0 1071/*************************************************************************
b21a15f6 1072 * thinkpad-acpi driver attributes
56b6aeb0
HMH		 1073 */
1074
b21a15f6
HMH		 1075/* interface_version --------------------------------------------------- */
1076static ssize_t tpacpi_driver_interface_version_show(
1077 struct device_driver *drv,
1078 char *buf)
1da177e4 1079{
b21a15f6
HMH		 1080 return snprintf(buf, PAGE_SIZE, "0x%08x\n", TPACPI_SYSFS_VERSION);
1081}
1082
1083static DRIVER_ATTR(interface_version, S_IRUGO,
1084 tpacpi_driver_interface_version_show, NULL);
1085
1086/* debug_level --------------------------------------------------------- */
1087static ssize_t tpacpi_driver_debug_show(struct device_driver *drv,
1088 char *buf)
1089{
1090 return snprintf(buf, PAGE_SIZE, "0x%04x\n", dbg_level);
1091}
1092
1093static ssize_t tpacpi_driver_debug_store(struct device_driver *drv,
1094 const char *buf, size_t count)
1095{
1096 unsigned long t;
1097
1098 if (parse_strtoul(buf, 0xffff, &t))
1099 return -EINVAL;
1100
1101 dbg_level = t;
1102
1103 return count;
1104}
1105
1106static DRIVER_ATTR(debug_level, S_IWUSR | S_IRUGO,
1107 tpacpi_driver_debug_show, tpacpi_driver_debug_store);
1108
1109/* version ------------------------------------------------------------- */
1110static ssize_t tpacpi_driver_version_show(struct device_driver *drv,
1111 char *buf)
1112{
35ff8b9f
HMH		 1113 return snprintf(buf, PAGE_SIZE, "%s v%s\n",
1114 TPACPI_DESC, TPACPI_VERSION);
b21a15f6
HMH		 1115}
1116
1117static DRIVER_ATTR(version, S_IRUGO,
1118 tpacpi_driver_version_show, NULL);
1119
1120/* --------------------------------------------------------------------- */
1121
a73f3091
HMH		 1122#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
1123
1124static void tpacpi_send_radiosw_update(void);
1125
1126/* wlsw_emulstate ------------------------------------------------------ */
1127static ssize_t tpacpi_driver_wlsw_emulstate_show(struct device_driver *drv,
1128 char *buf)
1129{
1130 return snprintf(buf, PAGE_SIZE, "%d\n", !!tpacpi_wlsw_emulstate);
1131}
1132
1133static ssize_t tpacpi_driver_wlsw_emulstate_store(struct device_driver *drv,
1134 const char *buf, size_t count)
1135{
1136 unsigned long t;
1137
1138 if (parse_strtoul(buf, 1, &t))
1139 return -EINVAL;
1140
1141 if (tpacpi_wlsw_emulstate != t) {
1142 tpacpi_wlsw_emulstate = !!t;
1143 tpacpi_send_radiosw_update();
1144 } else
1145 tpacpi_wlsw_emulstate = !!t;
1146
1147 return count;
1148}
1149
1150static DRIVER_ATTR(wlsw_emulstate, S_IWUSR | S_IRUGO,
1151 tpacpi_driver_wlsw_emulstate_show,
1152 tpacpi_driver_wlsw_emulstate_store);
1153
1154/* bluetooth_emulstate ------------------------------------------------- */
1155static ssize_t tpacpi_driver_bluetooth_emulstate_show(
1156 struct device_driver *drv,
1157 char *buf)
1158{
1159 return snprintf(buf, PAGE_SIZE, "%d\n", !!tpacpi_bluetooth_emulstate);
1160}
1161
1162static ssize_t tpacpi_driver_bluetooth_emulstate_store(
1163 struct device_driver *drv,
1164 const char *buf, size_t count)
1165{
1166 unsigned long t;
1167
1168 if (parse_strtoul(buf, 1, &t))
1169 return -EINVAL;
1170
1171 tpacpi_bluetooth_emulstate = !!t;
1172
1173 return count;
1174}
1175
1176static DRIVER_ATTR(bluetooth_emulstate, S_IWUSR | S_IRUGO,
1177 tpacpi_driver_bluetooth_emulstate_show,
1178 tpacpi_driver_bluetooth_emulstate_store);
1179
1180/* wwan_emulstate ------------------------------------------------- */
1181static ssize_t tpacpi_driver_wwan_emulstate_show(
1182 struct device_driver *drv,
1183 char *buf)
1184{
1185 return snprintf(buf, PAGE_SIZE, "%d\n", !!tpacpi_wwan_emulstate);
1186}
1187
1188static ssize_t tpacpi_driver_wwan_emulstate_store(
1189 struct device_driver *drv,
1190 const char *buf, size_t count)
1191{
1192 unsigned long t;
1193
1194 if (parse_strtoul(buf, 1, &t))
1195 return -EINVAL;
1196
1197 tpacpi_wwan_emulstate = !!t;
1198
1199 return count;
1200}
1201
1202static DRIVER_ATTR(wwan_emulstate, S_IWUSR | S_IRUGO,
1203 tpacpi_driver_wwan_emulstate_show,
1204 tpacpi_driver_wwan_emulstate_store);
1205
0045c0aa
HMH		 1206/* uwb_emulstate ------------------------------------------------- */
1207static ssize_t tpacpi_driver_uwb_emulstate_show(
1208 struct device_driver *drv,
1209 char *buf)
1210{
1211 return snprintf(buf, PAGE_SIZE, "%d\n", !!tpacpi_uwb_emulstate);
1212}
1213
1214static ssize_t tpacpi_driver_uwb_emulstate_store(
1215 struct device_driver *drv,
1216 const char *buf, size_t count)
1217{
1218 unsigned long t;
1219
1220 if (parse_strtoul(buf, 1, &t))
1221 return -EINVAL;
1222
1223 tpacpi_uwb_emulstate = !!t;
1224
1225 return count;
1226}
1227
1228static DRIVER_ATTR(uwb_emulstate, S_IWUSR | S_IRUGO,
1229 tpacpi_driver_uwb_emulstate_show,
1230 tpacpi_driver_uwb_emulstate_store);
a73f3091
HMH		 1231#endif
1232
1233/* --------------------------------------------------------------------- */
1234
35ff8b9f 1235static struct driver_attribute *tpacpi_driver_attributes[] = {
b21a15f6
HMH		 1236 &driver_attr_debug_level, &driver_attr_version,
1237 &driver_attr_interface_version,
1238};
1239
1240static int __init tpacpi_create_driver_attributes(struct device_driver *drv)
1241{
1242 int i, res;
1243
1244 i = 0;
1245 res = 0;
1246 while (!res && i < ARRAY_SIZE(tpacpi_driver_attributes)) {
1247 res = driver_create_file(drv, tpacpi_driver_attributes[i]);
1248 i++;
1249 }
1250
a73f3091
HMH		 1251#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
1252 if (!res && dbg_wlswemul)
1253 res = driver_create_file(drv, &driver_attr_wlsw_emulstate);
1254 if (!res && dbg_bluetoothemul)
1255 res = driver_create_file(drv, &driver_attr_bluetooth_emulstate);
1256 if (!res && dbg_wwanemul)
1257 res = driver_create_file(drv, &driver_attr_wwan_emulstate);
0045c0aa
HMH		 1258 if (!res && dbg_uwbemul)
1259 res = driver_create_file(drv, &driver_attr_uwb_emulstate);
a73f3091
HMH		 1260#endif
1261
b21a15f6
HMH		 1262 return res;
1263}
1264
1265static void tpacpi_remove_driver_attributes(struct device_driver *drv)
1266{
1267 int i;
1268
35ff8b9f 1269 for (i = 0; i < ARRAY_SIZE(tpacpi_driver_attributes); i++)
b21a15f6 1270 driver_remove_file(drv, tpacpi_driver_attributes[i]);
a73f3091
HMH		 1271
1272#ifdef THINKPAD_ACPI_DEBUGFACILITIES
1273 driver_remove_file(drv, &driver_attr_wlsw_emulstate);
1274 driver_remove_file(drv, &driver_attr_bluetooth_emulstate);
1275 driver_remove_file(drv, &driver_attr_wwan_emulstate);
0045c0aa 1276 driver_remove_file(drv, &driver_attr_uwb_emulstate);
a73f3091 1277#endif
b21a15f6
HMH		 1278}
1279
1280/****************************************************************************
1281 ****************************************************************************
1282 *
1283 * Subdrivers
1284 *
1285 ****************************************************************************
1286 ****************************************************************************/
1287
1288/*************************************************************************
1289 * thinkpad-acpi init subdriver
1290 */
1291
1292static int __init thinkpad_acpi_driver_init(struct ibm_init_struct *iibm)
1293{
e0c7dfe7
HMH		 1294 printk(TPACPI_INFO "%s v%s\n", TPACPI_DESC, TPACPI_VERSION);
1295 printk(TPACPI_INFO "%s\n", TPACPI_URL);
b21a15f6 1296
e0c7dfe7 1297 printk(TPACPI_INFO "ThinkPad BIOS %s, EC %s\n",
b21a15f6
HMH		 1298 (thinkpad_id.bios_version_str) ?
1299 thinkpad_id.bios_version_str : "unknown",
1300 (thinkpad_id.ec_version_str) ?
1301 thinkpad_id.ec_version_str : "unknown");
d5a2f2f1
HMH		 1302
1303 if (thinkpad_id.vendor && thinkpad_id.model_str)
8c74adbc 1304 printk(TPACPI_INFO "%s %s, model %s\n",
d5a2f2f1
HMH		 1305 (thinkpad_id.vendor == PCI_VENDOR_ID_IBM) ?
1306 "IBM" : ((thinkpad_id.vendor ==
1307 PCI_VENDOR_ID_LENOVO) ?
1308 "Lenovo" : "Unknown vendor"),
8c74adbc
HMH		 1309 thinkpad_id.model_str,
1310 (thinkpad_id.nummodel_str) ?
1311 thinkpad_id.nummodel_str : "unknown");
3945ac36 1312
1da177e4
LT		 1313 return 0;
1314}
1315
643f12db 1316static int thinkpad_acpi_driver_read(char *p)
1da177e4
LT		 1317{
1318 int len = 0;
1319
e0c7dfe7
HMH		 1320 len += sprintf(p + len, "driver:\t\t%s\n", TPACPI_DESC);
1321 len += sprintf(p + len, "version:\t%s\n", TPACPI_VERSION);
1da177e4
LT		 1322
1323 return len;
1324}
1325
a5763f22
HMH		 1326static struct ibm_struct thinkpad_acpi_driver_data = {
1327 .name = "driver",
1328 .read = thinkpad_acpi_driver_read,
1329};
1330
56b6aeb0
HMH		 1331/*************************************************************************
1332 * Hotkey subdriver
1333 */
1334
f74a27d4
HMH		 1335enum { /* hot key scan codes (derived from ACPI DSDT) */
1336 TP_ACPI_HOTKEYSCAN_FNF1 = 0,
1337 TP_ACPI_HOTKEYSCAN_FNF2,
1338 TP_ACPI_HOTKEYSCAN_FNF3,
1339 TP_ACPI_HOTKEYSCAN_FNF4,
1340 TP_ACPI_HOTKEYSCAN_FNF5,
1341 TP_ACPI_HOTKEYSCAN_FNF6,
1342 TP_ACPI_HOTKEYSCAN_FNF7,
1343 TP_ACPI_HOTKEYSCAN_FNF8,
1344 TP_ACPI_HOTKEYSCAN_FNF9,
1345 TP_ACPI_HOTKEYSCAN_FNF10,
1346 TP_ACPI_HOTKEYSCAN_FNF11,
1347 TP_ACPI_HOTKEYSCAN_FNF12,
1348 TP_ACPI_HOTKEYSCAN_FNBACKSPACE,
1349 TP_ACPI_HOTKEYSCAN_FNINSERT,
1350 TP_ACPI_HOTKEYSCAN_FNDELETE,
1351 TP_ACPI_HOTKEYSCAN_FNHOME,
1352 TP_ACPI_HOTKEYSCAN_FNEND,
1353 TP_ACPI_HOTKEYSCAN_FNPAGEUP,
1354 TP_ACPI_HOTKEYSCAN_FNPAGEDOWN,
1355 TP_ACPI_HOTKEYSCAN_FNSPACE,
1356 TP_ACPI_HOTKEYSCAN_VOLUMEUP,
1357 TP_ACPI_HOTKEYSCAN_VOLUMEDOWN,
1358 TP_ACPI_HOTKEYSCAN_MUTE,
1359 TP_ACPI_HOTKEYSCAN_THINKPAD,
1360};
1361
01e88f25
HMH		 1362enum { /* Keys available through NVRAM polling */
1363 TPACPI_HKEY_NVRAM_KNOWN_MASK = 0x00fb88c0U,
1364 TPACPI_HKEY_NVRAM_GOOD_MASK = 0x00fb8000U,
1365};
1366
1367enum { /* Positions of some of the keys in hotkey masks */
1368 TP_ACPI_HKEY_DISPSWTCH_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNF7,
1369 TP_ACPI_HKEY_DISPXPAND_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNF8,
1370 TP_ACPI_HKEY_HIBERNATE_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNF12,
1371 TP_ACPI_HKEY_BRGHTUP_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNHOME,
1372 TP_ACPI_HKEY_BRGHTDWN_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNEND,
1373 TP_ACPI_HKEY_THNKLGHT_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNPAGEUP,
1374 TP_ACPI_HKEY_ZOOM_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNSPACE,
1375 TP_ACPI_HKEY_VOLUP_MASK = 1 << TP_ACPI_HOTKEYSCAN_VOLUMEUP,
1376 TP_ACPI_HKEY_VOLDWN_MASK = 1 << TP_ACPI_HOTKEYSCAN_VOLUMEDOWN,
1377 TP_ACPI_HKEY_MUTE_MASK = 1 << TP_ACPI_HOTKEYSCAN_MUTE,
1378 TP_ACPI_HKEY_THINKPAD_MASK = 1 << TP_ACPI_HOTKEYSCAN_THINKPAD,
1379};
1380
1381enum { /* NVRAM to ACPI HKEY group map */
1382 TP_NVRAM_HKEY_GROUP_HK2 = TP_ACPI_HKEY_THINKPAD_MASK |
1383 TP_ACPI_HKEY_ZOOM_MASK |
1384 TP_ACPI_HKEY_DISPSWTCH_MASK |
1385 TP_ACPI_HKEY_HIBERNATE_MASK,
1386 TP_NVRAM_HKEY_GROUP_BRIGHTNESS = TP_ACPI_HKEY_BRGHTUP_MASK |
1387 TP_ACPI_HKEY_BRGHTDWN_MASK,
1388 TP_NVRAM_HKEY_GROUP_VOLUME = TP_ACPI_HKEY_VOLUP_MASK |
1389 TP_ACPI_HKEY_VOLDWN_MASK |
1390 TP_ACPI_HKEY_MUTE_MASK,
1391};
1392
1393#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
1394struct tp_nvram_state {
1395 u16 thinkpad_toggle:1;
1396 u16 zoom_toggle:1;
1397 u16 display_toggle:1;
1398 u16 thinklight_toggle:1;
1399 u16 hibernate_toggle:1;
1400 u16 displayexp_toggle:1;
1401 u16 display_state:1;
1402 u16 brightness_toggle:1;
1403 u16 volume_toggle:1;
1404 u16 mute:1;
1405
1406 u8 brightness_level;
1407 u8 volume_level;
1408};
1409
1410static struct task_struct *tpacpi_hotkey_task;
1411static u32 hotkey_source_mask; /* bit mask 0=ACPI,1=NVRAM */
1412static int hotkey_poll_freq = 10; /* Hz */
1413static struct mutex hotkey_thread_mutex;
1414static struct mutex hotkey_thread_data_mutex;
1415static unsigned int hotkey_config_change;
1416
1417#else /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
1418
1419#define hotkey_source_mask 0U
1420
1421#endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
1422
f74a27d4
HMH		 1423static struct mutex hotkey_mutex;
1424
a713b4d7
HMH		 1425static enum { /* Reasons for waking up */
1426 TP_ACPI_WAKEUP_NONE = 0, /* None or unknown */
1427 TP_ACPI_WAKEUP_BAYEJ, /* Bay ejection request */
1428 TP_ACPI_WAKEUP_UNDOCK, /* Undock request */
1429} hotkey_wakeup_reason;
1430
1431static int hotkey_autosleep_ack;
1432
ae92bd17 1433static u32 hotkey_orig_mask;
9b010de5 1434static u32 hotkey_all_mask;
6a38abbf 1435static u32 hotkey_reserved_mask;
b2c985e7 1436static u32 hotkey_mask;
6a38abbf 1437
b21a15f6
HMH		 1438static unsigned int hotkey_report_mode;
1439
edf0e0e5 1440static u16 *hotkey_keycode_map;
78f81cc4 1441
94954cc6 1442static struct attribute_set *hotkey_dev_attributes;
a0416420 1443
01e88f25
HMH		 1444#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
1445#define HOTKEY_CONFIG_CRITICAL_START \
35ff8b9f
HMH		 1446 do { \
1447 mutex_lock(&hotkey_thread_data_mutex); \
1448 hotkey_config_change++; \
1449 } while (0);
01e88f25
HMH		 1450#define HOTKEY_CONFIG_CRITICAL_END \
1451 mutex_unlock(&hotkey_thread_data_mutex);
1452#else
1453#define HOTKEY_CONFIG_CRITICAL_START
1454#define HOTKEY_CONFIG_CRITICAL_END
1455#endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
1456
6c231bd5
HMH		 1457/* HKEY.MHKG() return bits */
1458#define TP_HOTKEY_TABLET_MASK (1 << 3)
1459
74941a69
HMH		 1460static int hotkey_get_wlsw(int *status)
1461{
a73f3091
HMH		 1462#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
1463 if (dbg_wlswemul) {
1464 *status = !!tpacpi_wlsw_emulstate;
1465 return 0;
1466 }
1467#endif
74941a69
HMH		 1468 if (!acpi_evalf(hkey_handle, status, "WLSW", "d"))
1469 return -EIO;
1470 return 0;
1471}
1472
6c231bd5
HMH		 1473static int hotkey_get_tablet_mode(int *status)
1474{
1475 int s;
1476
1477 if (!acpi_evalf(hkey_handle, &s, "MHKG", "d"))
1478 return -EIO;
1479
cee47f5a
HMH		 1480 *status = ((s & TP_HOTKEY_TABLET_MASK) != 0);
1481 return 0;
6c231bd5
HMH		 1482}
1483
b2c985e7
HMH		 1484/*
1485 * Call with hotkey_mutex held
1486 */
1487static int hotkey_mask_get(void)
1488{
01e88f25
HMH		 1489 u32 m = 0;
1490
b2c985e7 1491 if (tp_features.hotkey_mask) {
01e88f25 1492 if (!acpi_evalf(hkey_handle, &m, "DHKN", "d"))
b2c985e7
HMH		 1493 return -EIO;
1494 }
01e88f25 1495 hotkey_mask = m | (hotkey_source_mask & hotkey_mask);
b2c985e7
HMH		 1496
1497 return 0;
1498}
1499
1500/*
1501 * Call with hotkey_mutex held
1502 */
1503static int hotkey_mask_set(u32 mask)
1504{
1505 int i;
1506 int rc = 0;
1507
1508 if (tp_features.hotkey_mask) {
92889022
HMH		 1509 if (!tp_warned.hotkey_mask_ff &&
1510 (mask == 0xffff || mask == 0xffffff ||
1511 mask == 0xffffffff)) {
1512 tp_warned.hotkey_mask_ff = 1;
1513 printk(TPACPI_NOTICE
1514 "setting the hotkey mask to 0x%08x is likely "
1515 "not the best way to go about it\n", mask);
1516 printk(TPACPI_NOTICE
1517 "please consider using the driver defaults, "
1518 "and refer to up-to-date thinkpad-acpi "
1519 "documentation\n");
1520 }
1521
01e88f25 1522 HOTKEY_CONFIG_CRITICAL_START
b2c985e7
HMH		 1523 for (i = 0; i < 32; i++) {
1524 u32 m = 1 << i;
01e88f25
HMH		 1525 /* enable in firmware mask only keys not in NVRAM
1526 * mode, but enable the key in the cached hotkey_mask
1527 * regardless of mode, or the key will end up
1528 * disabled by hotkey_mask_get() */
b2c985e7
HMH		 1529 if (!acpi_evalf(hkey_handle,
1530 NULL, "MHKM", "vdd", i + 1,
01e88f25 1531 !!((mask & ~hotkey_source_mask) & m))) {
b2c985e7
HMH		 1532 rc = -EIO;
1533 break;
1534 } else {
1535 hotkey_mask = (hotkey_mask & ~m) | (mask & m);
1536 }
1537 }
01e88f25 1538 HOTKEY_CONFIG_CRITICAL_END
b2c985e7
HMH		 1539
1540 /* hotkey_mask_get must be called unconditionally below */
01e88f25
HMH		 1541 if (!hotkey_mask_get() && !rc &&
1542 (hotkey_mask & ~hotkey_source_mask) !=
1543 (mask & ~hotkey_source_mask)) {
e0c7dfe7 1544 printk(TPACPI_NOTICE
b2c985e7
HMH		 1545 "requested hot key mask 0x%08x, but "
1546 "firmware forced it to 0x%08x\n",
1547 mask, hotkey_mask);
1548 }
01e88f25
HMH		 1549 } else {
1550#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
1551 HOTKEY_CONFIG_CRITICAL_START
1552 hotkey_mask = mask & hotkey_source_mask;
1553 HOTKEY_CONFIG_CRITICAL_END
1554 hotkey_mask_get();
1555 if (hotkey_mask != mask) {
e0c7dfe7 1556 printk(TPACPI_NOTICE
01e88f25
HMH		 1557 "requested hot key mask 0x%08x, "
1558 "forced to 0x%08x (NVRAM poll mask is "
1559 "0x%08x): no firmware mask support\n",
1560 mask, hotkey_mask, hotkey_source_mask);
1561 }
1562#else
1563 hotkey_mask_get();
1564 rc = -ENXIO;
1565#endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
b2c985e7
HMH		 1566 }
1567
1568 return rc;
1569}
1570
1571static int hotkey_status_get(int *status)
1572{
1573 if (!acpi_evalf(hkey_handle, status, "DHKC", "d"))
1574 return -EIO;
1575
1576 return 0;
1577}
1578
2586d566 1579static int hotkey_status_set(bool enable)
b2c985e7 1580{
2586d566 1581 if (!acpi_evalf(hkey_handle, NULL, "MHKC", "vd", enable ? 1 : 0))
b2c985e7
HMH		 1582 return -EIO;
1583
1584 return 0;
1585}
1586
6c231bd5 1587static void tpacpi_input_send_tabletsw(void)
b3ec6f91 1588{
6c231bd5 1589 int state;
b3ec6f91 1590
6c231bd5
HMH		 1591 if (tp_features.hotkey_tablet &&
1592 !hotkey_get_tablet_mode(&state)) {
1593 mutex_lock(&tpacpi_inputdev_send_mutex);
b3ec6f91 1594
6c231bd5
HMH		 1595 input_report_switch(tpacpi_inputdev,
1596 SW_TABLET_MODE, !!state);
1597 input_sync(tpacpi_inputdev);
1598
1599 mutex_unlock(&tpacpi_inputdev_send_mutex);
1600 }
b3ec6f91
HMH		 1601}
1602
b7c8c200
HMH		 1603static void tpacpi_input_send_key(unsigned int scancode)
1604{
1605 unsigned int keycode;
1606
1607 keycode = hotkey_keycode_map[scancode];
1608
1609 if (keycode != KEY_RESERVED) {
1610 mutex_lock(&tpacpi_inputdev_send_mutex);
1611
1612 input_report_key(tpacpi_inputdev, keycode, 1);
1613 if (keycode == KEY_UNKNOWN)
1614 input_event(tpacpi_inputdev, EV_MSC, MSC_SCAN,
1615 scancode);
1616 input_sync(tpacpi_inputdev);
1617
1618 input_report_key(tpacpi_inputdev, keycode, 0);
1619 if (keycode == KEY_UNKNOWN)
1620 input_event(tpacpi_inputdev, EV_MSC, MSC_SCAN,
1621 scancode);
1622 input_sync(tpacpi_inputdev);
1623
1624 mutex_unlock(&tpacpi_inputdev_send_mutex);
1625 }
1626}
1627
01e88f25
HMH		 1628#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
1629static struct tp_acpi_drv_struct ibm_hotkey_acpidriver;
1630
1631static void tpacpi_hotkey_send_key(unsigned int scancode)
1632{
1633 tpacpi_input_send_key(scancode);
1634 if (hotkey_report_mode < 2) {
1635 acpi_bus_generate_proc_event(ibm_hotkey_acpidriver.device,
1636 0x80, 0x1001 + scancode);
1637 }
1638}
1639
1640static void hotkey_read_nvram(struct tp_nvram_state *n, u32 m)
1641{
1642 u8 d;
1643
1644 if (m & TP_NVRAM_HKEY_GROUP_HK2) {
1645 d = nvram_read_byte(TP_NVRAM_ADDR_HK2);
1646 n->thinkpad_toggle = !!(d & TP_NVRAM_MASK_HKT_THINKPAD);
1647 n->zoom_toggle = !!(d & TP_NVRAM_MASK_HKT_ZOOM);
1648 n->display_toggle = !!(d & TP_NVRAM_MASK_HKT_DISPLAY);
1649 n->hibernate_toggle = !!(d & TP_NVRAM_MASK_HKT_HIBERNATE);
1650 }
1651 if (m & TP_ACPI_HKEY_THNKLGHT_MASK) {
1652 d = nvram_read_byte(TP_NVRAM_ADDR_THINKLIGHT);
1653 n->thinklight_toggle = !!(d & TP_NVRAM_MASK_THINKLIGHT);
1654 }
1655 if (m & TP_ACPI_HKEY_DISPXPAND_MASK) {
1656 d = nvram_read_byte(TP_NVRAM_ADDR_VIDEO);
1657 n->displayexp_toggle =
1658 !!(d & TP_NVRAM_MASK_HKT_DISPEXPND);
1659 }
1660 if (m & TP_NVRAM_HKEY_GROUP_BRIGHTNESS) {
1661 d = nvram_read_byte(TP_NVRAM_ADDR_BRIGHTNESS);
1662 n->brightness_level = (d & TP_NVRAM_MASK_LEVEL_BRIGHTNESS)
1663 >> TP_NVRAM_POS_LEVEL_BRIGHTNESS;
1664 n->brightness_toggle =
1665 !!(d & TP_NVRAM_MASK_HKT_BRIGHTNESS);
1666 }
1667 if (m & TP_NVRAM_HKEY_GROUP_VOLUME) {
1668 d = nvram_read_byte(TP_NVRAM_ADDR_MIXER);
1669 n->volume_level = (d & TP_NVRAM_MASK_LEVEL_VOLUME)
1670 >> TP_NVRAM_POS_LEVEL_VOLUME;
1671 n->mute = !!(d & TP_NVRAM_MASK_MUTE);
1672 n->volume_toggle = !!(d & TP_NVRAM_MASK_HKT_VOLUME);
1673 }
1674}
1675
1676#define TPACPI_COMPARE_KEY(__scancode, __member) \
35ff8b9f
HMH		 1677 do { \
1678 if ((mask & (1 << __scancode)) && \
1679 oldn->__member != newn->__member) \
1680 tpacpi_hotkey_send_key(__scancode); \
1681 } while (0)
01e88f25
HMH		 1682
1683#define TPACPI_MAY_SEND_KEY(__scancode) \
1684 do { if (mask & (1 << __scancode)) \
1685 tpacpi_hotkey_send_key(__scancode); } while (0)
1686
1687static void hotkey_compare_and_issue_event(struct tp_nvram_state *oldn,
35ff8b9f 1688 struct tp_nvram_state *newn,
01e88f25
HMH		 1689 u32 mask)
1690{
1691 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_THINKPAD, thinkpad_toggle);
1692 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNSPACE, zoom_toggle);
1693 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNF7, display_toggle);
1694 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNF12, hibernate_toggle);
1695
1696 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNPAGEUP, thinklight_toggle);
1697
1698 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNF8, displayexp_toggle);
1699
1700 /* handle volume */
1701 if (oldn->volume_toggle != newn->volume_toggle) {
1702 if (oldn->mute != newn->mute) {
1703 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_MUTE);
1704 }
1705 if (oldn->volume_level > newn->volume_level) {
1706 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEDOWN);
1707 } else if (oldn->volume_level < newn->volume_level) {
1708 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEUP);
1709 } else if (oldn->mute == newn->mute) {
1710 /* repeated key presses that didn't change state */
1711 if (newn->mute) {
1712 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_MUTE);
1713 } else if (newn->volume_level != 0) {
1714 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEUP);
1715 } else {
1716 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEDOWN);
1717 }
1718 }
1719 }
1720
1721 /* handle brightness */
1722 if (oldn->brightness_toggle != newn->brightness_toggle) {
1723 if (oldn->brightness_level < newn->brightness_level) {
1724 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNHOME);
1725 } else if (oldn->brightness_level > newn->brightness_level) {
1726 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNEND);
1727 } else {
1728 /* repeated key presses that didn't change state */
1729 if (newn->brightness_level != 0) {
1730 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNHOME);
1731 } else {
1732 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNEND);
1733 }
1734 }
1735 }
1736}
1737
1738#undef TPACPI_COMPARE_KEY
1739#undef TPACPI_MAY_SEND_KEY
1740
1741static int hotkey_kthread(void *data)
1742{
1743 struct tp_nvram_state s[2];
1744 u32 mask;
1745 unsigned int si, so;
1746 unsigned long t;
1747 unsigned int change_detector, must_reset;
1748
1749 mutex_lock(&hotkey_thread_mutex);
1750
1751 if (tpacpi_lifecycle == TPACPI_LIFE_EXITING)
1752 goto exit;
1753
1754 set_freezable();
1755
1756 so = 0;
1757 si = 1;
1758 t = 0;
1759
1760 /* Initial state for compares */
1761 mutex_lock(&hotkey_thread_data_mutex);
1762 change_detector = hotkey_config_change;
1763 mask = hotkey_source_mask & hotkey_mask;
1764 mutex_unlock(&hotkey_thread_data_mutex);
1765 hotkey_read_nvram(&s[so], mask);
1766
1767 while (!kthread_should_stop() && hotkey_poll_freq) {
1768 if (t == 0)
1769 t = 1000/hotkey_poll_freq;
1770 t = msleep_interruptible(t);
1771 if (unlikely(kthread_should_stop()))
1772 break;
1773 must_reset = try_to_freeze();
1774 if (t > 0 && !must_reset)
1775 continue;
1776
1777 mutex_lock(&hotkey_thread_data_mutex);
1778 if (must_reset || hotkey_config_change != change_detector) {
1779 /* forget old state on thaw or config change */
1780 si = so;
1781 t = 0;
1782 change_detector = hotkey_config_change;
1783 }
1784 mask = hotkey_source_mask & hotkey_mask;
1785 mutex_unlock(&hotkey_thread_data_mutex);
1786
1787 if (likely(mask)) {
1788 hotkey_read_nvram(&s[si], mask);
1789 if (likely(si != so)) {
1790 hotkey_compare_and_issue_event(&s[so], &s[si],
35ff8b9f 1791 mask);
01e88f25
HMH		 1792 }
1793 }
1794
1795 so = si;
1796 si ^= 1;
1797 }
1798
1799exit:
1800 mutex_unlock(&hotkey_thread_mutex);
1801 return 0;
1802}
1803
1804static void hotkey_poll_stop_sync(void)
1805{
1806 if (tpacpi_hotkey_task) {
1807 if (frozen(tpacpi_hotkey_task) ||
1808 freezing(tpacpi_hotkey_task))
1809 thaw_process(tpacpi_hotkey_task);
1810
1811 kthread_stop(tpacpi_hotkey_task);
1812 tpacpi_hotkey_task = NULL;
1813 mutex_lock(&hotkey_thread_mutex);
1814 /* at this point, the thread did exit */
1815 mutex_unlock(&hotkey_thread_mutex);
1816 }
1817}
1818
1819/* call with hotkey_mutex held */
1820static void hotkey_poll_setup(int may_warn)
1821{
1822 if ((hotkey_source_mask & hotkey_mask) != 0 &&
1823 hotkey_poll_freq > 0 &&
1824 (tpacpi_inputdev->users > 0 || hotkey_report_mode < 2)) {
1825 if (!tpacpi_hotkey_task) {
1826 tpacpi_hotkey_task = kthread_run(hotkey_kthread,
95e57ab2 1827 NULL, TPACPI_NVRAM_KTHREAD_NAME);
01e88f25
HMH		 1828 if (IS_ERR(tpacpi_hotkey_task)) {
1829 tpacpi_hotkey_task = NULL;
35ff8b9f
HMH		 1830 printk(TPACPI_ERR
1831 "could not create kernel thread "
01e88f25
HMH		 1832 "for hotkey polling\n");
1833 }
1834 }
1835 } else {
1836 hotkey_poll_stop_sync();
1837 if (may_warn &&
1838 hotkey_source_mask != 0 && hotkey_poll_freq == 0) {
35ff8b9f
HMH		 1839 printk(TPACPI_NOTICE
1840 "hot keys 0x%08x require polling, "
01e88f25
HMH		 1841 "which is currently disabled\n",
1842 hotkey_source_mask);
1843 }
1844 }
1845}
1846
1847static void hotkey_poll_setup_safe(int may_warn)
1848{
1849 mutex_lock(&hotkey_mutex);
1850 hotkey_poll_setup(may_warn);
1851 mutex_unlock(&hotkey_mutex);
1852}
1853
1bc6b9cd
HMH		 1854#else /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
1855
1856static void hotkey_poll_setup_safe(int __unused)
1857{
1858}
1859
1860#endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
1861
01e88f25
HMH		 1862static int hotkey_inputdev_open(struct input_dev *dev)
1863{
1864 switch (tpacpi_lifecycle) {
1865 case TPACPI_LIFE_INIT:
1866 /*
1867 * hotkey_init will call hotkey_poll_setup_safe
1868 * at the appropriate moment
1869 */
1870 return 0;
1871 case TPACPI_LIFE_EXITING:
1872 return -EBUSY;
1873 case TPACPI_LIFE_RUNNING:
1874 hotkey_poll_setup_safe(0);
1875 return 0;
1876 }
1877
1878 /* Should only happen if tpacpi_lifecycle is corrupt */
1879 BUG();
1880 return -EBUSY;
1881}
1882
1883static void hotkey_inputdev_close(struct input_dev *dev)
1884{
1885 /* disable hotkey polling when possible */
1886 if (tpacpi_lifecycle == TPACPI_LIFE_RUNNING)
1887 hotkey_poll_setup_safe(0);
1888}
01e88f25 1889
a0416420
HMH		 1890/* sysfs hotkey enable ------------------------------------------------- */
1891static ssize_t hotkey_enable_show(struct device *dev,
1892 struct device_attribute *attr,
1893 char *buf)
1894{
ae92bd17 1895 int res, status;
a0416420 1896
2586d566
HMH		 1897 printk_deprecated_attribute("hotkey_enable",
1898 "Hotkey reporting is always enabled");
1899
b2c985e7 1900 res = hotkey_status_get(&status);
a0416420
HMH		 1901 if (res)
1902 return res;
1903
1904 return snprintf(buf, PAGE_SIZE, "%d\n", status);
1905}
1906
1907static ssize_t hotkey_enable_store(struct device *dev,
1908 struct device_attribute *attr,
1909 const char *buf, size_t count)
1910{
1911 unsigned long t;
2586d566
HMH		 1912
1913 printk_deprecated_attribute("hotkey_enable",
1914 "Hotkeys can be disabled through hotkey_mask");
a0416420
HMH		 1915
1916 if (parse_strtoul(buf, 1, &t))
1917 return -EINVAL;
1918
2586d566
HMH		 1919 if (t == 0)
1920 return -EPERM;
a0416420 1921
2586d566 1922 return count;
a0416420
HMH		 1923}
1924
1925static struct device_attribute dev_attr_hotkey_enable =
cc4c24e1 1926 __ATTR(hotkey_enable, S_IWUSR | S_IRUGO,
a0416420
HMH		 1927 hotkey_enable_show, hotkey_enable_store);
1928
1929/* sysfs hotkey mask --------------------------------------------------- */
1930static ssize_t hotkey_mask_show(struct device *dev,
1931 struct device_attribute *attr,
1932 char *buf)
1933{
b2c985e7 1934 int res;
a0416420 1935
7646ea88 1936 if (mutex_lock_killable(&hotkey_mutex))
b2c985e7
HMH		 1937 return -ERESTARTSYS;
1938 res = hotkey_mask_get();
1939 mutex_unlock(&hotkey_mutex);
a0416420 1940
b2c985e7
HMH		 1941 return (res)?
1942 res : snprintf(buf, PAGE_SIZE, "0x%08x\n", hotkey_mask);
a0416420
HMH		 1943}
1944
1945static ssize_t hotkey_mask_store(struct device *dev,
1946 struct device_attribute *attr,
1947 const char *buf, size_t count)
1948{
1949 unsigned long t;
b2c985e7 1950 int res;
a0416420 1951
ae92bd17 1952 if (parse_strtoul(buf, 0xffffffffUL, &t))
a0416420
HMH		 1953 return -EINVAL;
1954
7646ea88 1955 if (mutex_lock_killable(&hotkey_mutex))
b2c985e7
HMH		 1956 return -ERESTARTSYS;
1957
1958 res = hotkey_mask_set(t);
01e88f25
HMH		 1959
1960#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
1961 hotkey_poll_setup(1);
1962#endif
1963
b2c985e7 1964 mutex_unlock(&hotkey_mutex);
a0416420 1965
56e2c200
HMH		 1966 tpacpi_disclose_usertask("hotkey_mask", "set to 0x%08lx\n", t);
1967
a0416420
HMH		 1968 return (res) ? res : count;
1969}
1970
1971static struct device_attribute dev_attr_hotkey_mask =
cc4c24e1 1972 __ATTR(hotkey_mask, S_IWUSR | S_IRUGO,
a0416420
HMH		 1973 hotkey_mask_show, hotkey_mask_store);
1974
1975/* sysfs hotkey bios_enabled ------------------------------------------- */
1976static ssize_t hotkey_bios_enabled_show(struct device *dev,
1977 struct device_attribute *attr,
1978 char *buf)
1979{
2586d566 1980 return sprintf(buf, "0\n");
a0416420
HMH		 1981}
1982
1983static struct device_attribute dev_attr_hotkey_bios_enabled =
cc4c24e1 1984 __ATTR(hotkey_bios_enabled, S_IRUGO, hotkey_bios_enabled_show, NULL);
a0416420
HMH		 1985
1986/* sysfs hotkey bios_mask ---------------------------------------------- */
1987static ssize_t hotkey_bios_mask_show(struct device *dev,
1988 struct device_attribute *attr,
1989 char *buf)
1990{
ae92bd17 1991 return snprintf(buf, PAGE_SIZE, "0x%08x\n", hotkey_orig_mask);
a0416420
HMH		 1992}
1993
1994static struct device_attribute dev_attr_hotkey_bios_mask =
cc4c24e1 1995 __ATTR(hotkey_bios_mask, S_IRUGO, hotkey_bios_mask_show, NULL);
a0416420 1996
9b010de5
HMH		 1997/* sysfs hotkey all_mask ----------------------------------------------- */
1998static ssize_t hotkey_all_mask_show(struct device *dev,
1999 struct device_attribute *attr,
2000 char *buf)
2001{
01e88f25
HMH		 2002 return snprintf(buf, PAGE_SIZE, "0x%08x\n",
2003 hotkey_all_mask | hotkey_source_mask);
9b010de5
HMH		 2004}
2005
2006static struct device_attribute dev_attr_hotkey_all_mask =
2007 __ATTR(hotkey_all_mask, S_IRUGO, hotkey_all_mask_show, NULL);
2008
2009/* sysfs hotkey recommended_mask --------------------------------------- */
2010static ssize_t hotkey_recommended_mask_show(struct device *dev,
2011 struct device_attribute *attr,
2012 char *buf)
2013{
2014 return snprintf(buf, PAGE_SIZE, "0x%08x\n",
01e88f25
HMH		 2015 (hotkey_all_mask | hotkey_source_mask)
2016 & ~hotkey_reserved_mask);
9b010de5
HMH		 2017}
2018
2019static struct device_attribute dev_attr_hotkey_recommended_mask =
2020 __ATTR(hotkey_recommended_mask, S_IRUGO,
2021 hotkey_recommended_mask_show, NULL);
2022
01e88f25
HMH		 2023#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
2024
2025/* sysfs hotkey hotkey_source_mask ------------------------------------- */
2026static ssize_t hotkey_source_mask_show(struct device *dev,
2027 struct device_attribute *attr,
2028 char *buf)
2029{
2030 return snprintf(buf, PAGE_SIZE, "0x%08x\n", hotkey_source_mask);
2031}
2032
2033static ssize_t hotkey_source_mask_store(struct device *dev,
2034 struct device_attribute *attr,
2035 const char *buf, size_t count)
2036{
2037 unsigned long t;
2038
2039 if (parse_strtoul(buf, 0xffffffffUL, &t) ||
2040 ((t & ~TPACPI_HKEY_NVRAM_KNOWN_MASK) != 0))
2041 return -EINVAL;
2042
7646ea88 2043 if (mutex_lock_killable(&hotkey_mutex))
01e88f25
HMH		 2044 return -ERESTARTSYS;
2045
2046 HOTKEY_CONFIG_CRITICAL_START
2047 hotkey_source_mask = t;
2048 HOTKEY_CONFIG_CRITICAL_END
2049
2050 hotkey_poll_setup(1);
2051
2052 mutex_unlock(&hotkey_mutex);
2053
56e2c200
HMH		 2054 tpacpi_disclose_usertask("hotkey_source_mask", "set to 0x%08lx\n", t);
2055
01e88f25
HMH		 2056 return count;
2057}
2058
2059static struct device_attribute dev_attr_hotkey_source_mask =
2060 __ATTR(hotkey_source_mask, S_IWUSR | S_IRUGO,
2061 hotkey_source_mask_show, hotkey_source_mask_store);
2062
2063/* sysfs hotkey hotkey_poll_freq --------------------------------------- */
2064static ssize_t hotkey_poll_freq_show(struct device *dev,
2065 struct device_attribute *attr,
2066 char *buf)
2067{
2068 return snprintf(buf, PAGE_SIZE, "%d\n", hotkey_poll_freq);
2069}
2070
2071static ssize_t hotkey_poll_freq_store(struct device *dev,
2072 struct device_attribute *attr,
2073 const char *buf, size_t count)
2074{
2075 unsigned long t;
2076
2077 if (parse_strtoul(buf, 25, &t))
2078 return -EINVAL;
2079
7646ea88 2080 if (mutex_lock_killable(&hotkey_mutex))
01e88f25
HMH		 2081 return -ERESTARTSYS;
2082
2083 hotkey_poll_freq = t;
2084
2085 hotkey_poll_setup(1);
2086 mutex_unlock(&hotkey_mutex);
2087
56e2c200
HMH		 2088 tpacpi_disclose_usertask("hotkey_poll_freq", "set to %lu\n", t);
2089
01e88f25
HMH		 2090 return count;
2091}
2092
2093static struct device_attribute dev_attr_hotkey_poll_freq =
2094 __ATTR(hotkey_poll_freq, S_IWUSR | S_IRUGO,
2095 hotkey_poll_freq_show, hotkey_poll_freq_store);
2096
2097#endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
2098
50ebec09 2099/* sysfs hotkey radio_sw (pollable) ------------------------------------ */
74941a69
HMH		 2100static ssize_t hotkey_radio_sw_show(struct device *dev,
2101 struct device_attribute *attr,
2102 char *buf)
2103{
2104 int res, s;
2105 res = hotkey_get_wlsw(&s);
2106 if (res < 0)
2107 return res;
2108
2109 return snprintf(buf, PAGE_SIZE, "%d\n", !!s);
2110}
2111
2112static struct device_attribute dev_attr_hotkey_radio_sw =
2113 __ATTR(hotkey_radio_sw, S_IRUGO, hotkey_radio_sw_show, NULL);
2114
50ebec09
HMH		 2115static void hotkey_radio_sw_notify_change(void)
2116{
2117 if (tp_features.hotkey_wlsw)
2118 sysfs_notify(&tpacpi_pdev->dev.kobj, NULL,
2119 "hotkey_radio_sw");
2120}
2121
6c231bd5
HMH		 2122/* sysfs hotkey tablet mode (pollable) --------------------------------- */
2123static ssize_t hotkey_tablet_mode_show(struct device *dev,
2124 struct device_attribute *attr,
2125 char *buf)
2126{
2127 int res, s;
2128 res = hotkey_get_tablet_mode(&s);
2129 if (res < 0)
2130 return res;
2131
2132 return snprintf(buf, PAGE_SIZE, "%d\n", !!s);
2133}
2134
2135static struct device_attribute dev_attr_hotkey_tablet_mode =
2136 __ATTR(hotkey_tablet_mode, S_IRUGO, hotkey_tablet_mode_show, NULL);
2137
2138static void hotkey_tablet_mode_notify_change(void)
2139{
2140 if (tp_features.hotkey_tablet)
2141 sysfs_notify(&tpacpi_pdev->dev.kobj, NULL,
2142 "hotkey_tablet_mode");
2143}
2144
ff80f137
HMH		 2145/* sysfs hotkey report_mode -------------------------------------------- */
2146static ssize_t hotkey_report_mode_show(struct device *dev,
2147 struct device_attribute *attr,
2148 char *buf)
2149{
2150 return snprintf(buf, PAGE_SIZE, "%d\n",
2151 (hotkey_report_mode != 0) ? hotkey_report_mode : 1);
2152}
2153
2154static struct device_attribute dev_attr_hotkey_report_mode =
2155 __ATTR(hotkey_report_mode, S_IRUGO, hotkey_report_mode_show, NULL);
2156
50ebec09 2157/* sysfs wakeup reason (pollable) -------------------------------------- */
a713b4d7
HMH		 2158static ssize_t hotkey_wakeup_reason_show(struct device *dev,
2159 struct device_attribute *attr,
2160 char *buf)
2161{
2162 return snprintf(buf, PAGE_SIZE, "%d\n", hotkey_wakeup_reason);
2163}
2164
2165static struct device_attribute dev_attr_hotkey_wakeup_reason =
2166 __ATTR(wakeup_reason, S_IRUGO, hotkey_wakeup_reason_show, NULL);
2167
1d5a2b54 2168static void hotkey_wakeup_reason_notify_change(void)
50ebec09
HMH		 2169{
2170 if (tp_features.hotkey_mask)
2171 sysfs_notify(&tpacpi_pdev->dev.kobj, NULL,
2172 "wakeup_reason");
2173}
2174
2175/* sysfs wakeup hotunplug_complete (pollable) -------------------------- */
a713b4d7
HMH		 2176static ssize_t hotkey_wakeup_hotunplug_complete_show(struct device *dev,
2177 struct device_attribute *attr,
2178 char *buf)
2179{
2180 return snprintf(buf, PAGE_SIZE, "%d\n", hotkey_autosleep_ack);
2181}
2182
2183static struct device_attribute dev_attr_hotkey_wakeup_hotunplug_complete =
2184 __ATTR(wakeup_hotunplug_complete, S_IRUGO,
2185 hotkey_wakeup_hotunplug_complete_show, NULL);
2186
1d5a2b54 2187static void hotkey_wakeup_hotunplug_complete_notify_change(void)
50ebec09
HMH		 2188{
2189 if (tp_features.hotkey_mask)
2190 sysfs_notify(&tpacpi_pdev->dev.kobj, NULL,
2191 "wakeup_hotunplug_complete");
2192}
2193
a0416420
HMH		 2194/* --------------------------------------------------------------------- */
2195
ff80f137
HMH		 2196static struct attribute *hotkey_attributes[] __initdata = {
2197 &dev_attr_hotkey_enable.attr,
01e88f25 2198 &dev_attr_hotkey_bios_enabled.attr,
ff80f137 2199 &dev_attr_hotkey_report_mode.attr,
01e88f25
HMH		 2200#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
2201 &dev_attr_hotkey_mask.attr,
2202 &dev_attr_hotkey_all_mask.attr,
2203 &dev_attr_hotkey_recommended_mask.attr,
2204 &dev_attr_hotkey_source_mask.attr,
2205 &dev_attr_hotkey_poll_freq.attr,
2206#endif
ff80f137
HMH		 2207};
2208
2209static struct attribute *hotkey_mask_attributes[] __initdata = {
a0416420 2210 &dev_attr_hotkey_bios_mask.attr,
01e88f25
HMH		 2211#ifndef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
2212 &dev_attr_hotkey_mask.attr,
9b010de5
HMH		 2213 &dev_attr_hotkey_all_mask.attr,
2214 &dev_attr_hotkey_recommended_mask.attr,
01e88f25 2215#endif
a713b4d7
HMH		 2216 &dev_attr_hotkey_wakeup_reason.attr,
2217 &dev_attr_hotkey_wakeup_hotunplug_complete.attr,
a0416420
HMH		 2218};
2219
0e74dc26
HMH		 2220static void bluetooth_update_rfk(void);
2221static void wan_update_rfk(void);
0045c0aa 2222static void uwb_update_rfk(void);
733e27c1
HMH		 2223static void tpacpi_send_radiosw_update(void)
2224{
2225 int wlsw;
2226
0e74dc26
HMH		 2227 /* Sync these BEFORE sending any rfkill events */
2228 if (tp_features.bluetooth)
2229 bluetooth_update_rfk();
2230 if (tp_features.wan)
2231 wan_update_rfk();
0045c0aa
HMH		 2232 if (tp_features.uwb)
2233 uwb_update_rfk();
0e74dc26 2234
733e27c1
HMH		 2235 if (tp_features.hotkey_wlsw && !hotkey_get_wlsw(&wlsw)) {
2236 mutex_lock(&tpacpi_inputdev_send_mutex);
2237
2238 input_report_switch(tpacpi_inputdev,
2239 SW_RFKILL_ALL, !!wlsw);
2240 input_sync(tpacpi_inputdev);
2241
2242 mutex_unlock(&tpacpi_inputdev_send_mutex);
2243 }
2244 hotkey_radio_sw_notify_change();
2245}
2246
9c0a76e1
HMH		 2247static void hotkey_exit(void)
2248{
2249#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
2250 hotkey_poll_stop_sync();
2251#endif
2252
2253 if (hotkey_dev_attributes)
2254 delete_attr_set(hotkey_dev_attributes, &tpacpi_pdev->dev.kobj);
2255
2256 kfree(hotkey_keycode_map);
2257
2258 if (tp_features.hotkey) {
56e2c200 2259 dbg_printk(TPACPI_DBG_EXIT | TPACPI_DBG_HKEY,
9c0a76e1
HMH		 2260 "restoring original hot key mask\n");
2261 /* no short-circuit boolean operator below! */
2262 if ((hotkey_mask_set(hotkey_orig_mask) |
2586d566 2263 hotkey_status_set(false)) != 0)
9c0a76e1
HMH		 2264 printk(TPACPI_ERR
2265 "failed to restore hot key mask "
2266 "to BIOS defaults\n");
2267 }
2268}
2269
a5763f22 2270static int __init hotkey_init(struct ibm_init_struct *iibm)
56b6aeb0 2271{
0f089147
HMH		 2272 /* Requirements for changing the default keymaps:
2273 *
2274 * 1. Many of the keys are mapped to KEY_RESERVED for very
2275 * good reasons. Do not change them unless you have deep
2276 * knowledge on the IBM and Lenovo ThinkPad firmware for
2277 * the various ThinkPad models. The driver behaves
2278 * differently for KEY_RESERVED: such keys have their
2279 * hot key mask *unset* in mask_recommended, and also
2280 * in the initial hot key mask programmed into the
2281 * firmware at driver load time, which means the firm-
2282 * ware may react very differently if you change them to
2283 * something else;
2284 *
2285 * 2. You must be subscribed to the linux-thinkpad and
2286 * ibm-acpi-devel mailing lists, and you should read the
2287 * list archives since 2007 if you want to change the
2288 * keymaps. This requirement exists so that you will
2289 * know the past history of problems with the thinkpad-
2290 * acpi driver keymaps, and also that you will be
2291 * listening to any bug reports;
2292 *
2293 * 3. Do not send thinkpad-acpi specific patches directly to
2294 * for merging, *ever*. Send them to the linux-acpi
2295 * mailinglist for comments. Merging is to be done only
2296 * through acpi-test and the ACPI maintainer.
2297 *
2298 * If the above is too much to ask, don't change the keymap.
2299 * Ask the thinkpad-acpi maintainer to do it, instead.
2300 */
edf0e0e5
HMH		 2301 static u16 ibm_keycode_map[] __initdata = {
2302 /* Scan Codes 0x00 to 0x0B: ACPI HKEY FN+F1..F12 */
2303 KEY_FN_F1, KEY_FN_F2, KEY_COFFEE, KEY_SLEEP,
2304 KEY_WLAN, KEY_FN_F6, KEY_SWITCHVIDEOMODE, KEY_FN_F8,
2305 KEY_FN_F9, KEY_FN_F10, KEY_FN_F11, KEY_SUSPEND,
0f089147
HMH		 2306
2307 /* Scan codes 0x0C to 0x1F: Other ACPI HKEY hot keys */
edf0e0e5
HMH		 2308 KEY_UNKNOWN, /* 0x0C: FN+BACKSPACE */
2309 KEY_UNKNOWN, /* 0x0D: FN+INSERT */
2310 KEY_UNKNOWN, /* 0x0E: FN+DELETE */
0f089147
HMH		 2311
2312 /* brightness: firmware always reacts to them, unless
2313 * X.org did some tricks in the radeon BIOS scratch
2314 * registers of *some* models */
e927c08d 2315 KEY_RESERVED, /* 0x0F: FN+HOME (brightness up) */
e927c08d 2316 KEY_RESERVED, /* 0x10: FN+END (brightness down) */
0f089147
HMH		 2317
2318 /* Thinklight: firmware always react to it */
edf0e0e5 2319 KEY_RESERVED, /* 0x11: FN+PGUP (thinklight toggle) */
0f089147 2320
edf0e0e5
HMH		 2321 KEY_UNKNOWN, /* 0x12: FN+PGDOWN */
2322 KEY_ZOOM, /* 0x13: FN+SPACE (zoom) */
0f089147
HMH		 2323
2324 /* Volume: firmware always react to it and reprograms
2325 * the built-in *extra* mixer. Never map it to control
2326 * another mixer by default. */
e927c08d
HMH		 2327 KEY_RESERVED, /* 0x14: VOLUME UP */
2328 KEY_RESERVED, /* 0x15: VOLUME DOWN */
2329 KEY_RESERVED, /* 0x16: MUTE */
0f089147 2330
edf0e0e5 2331 KEY_VENDOR, /* 0x17: Thinkpad/AccessIBM/Lenovo */
0f089147 2332
edf0e0e5
HMH		 2333 /* (assignments unknown, please report if found) */
2334 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN,
2335 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN,
2336 };
2337 static u16 lenovo_keycode_map[] __initdata = {
2338 /* Scan Codes 0x00 to 0x0B: ACPI HKEY FN+F1..F12 */
2339 KEY_FN_F1, KEY_COFFEE, KEY_BATTERY, KEY_SLEEP,
2340 KEY_WLAN, KEY_FN_F6, KEY_SWITCHVIDEOMODE, KEY_FN_F8,
2341 KEY_FN_F9, KEY_FN_F10, KEY_FN_F11, KEY_SUSPEND,
0f089147
HMH		 2342
2343 /* Scan codes 0x0C to 0x1F: Other ACPI HKEY hot keys */
edf0e0e5
HMH		 2344 KEY_UNKNOWN, /* 0x0C: FN+BACKSPACE */
2345 KEY_UNKNOWN, /* 0x0D: FN+INSERT */
2346 KEY_UNKNOWN, /* 0x0E: FN+DELETE */
0f089147 2347
b5972796
HMH		 2348 /* These either have to go through ACPI video, or
2349 * act like in the IBM ThinkPads, so don't ever
2350 * enable them by default */
56a185b4 2351 KEY_RESERVED, /* 0x0F: FN+HOME (brightness up) */
56a185b4 2352 KEY_RESERVED, /* 0x10: FN+END (brightness down) */
0f089147 2353
edf0e0e5 2354 KEY_RESERVED, /* 0x11: FN+PGUP (thinklight toggle) */
0f089147 2355
edf0e0e5
HMH		 2356 KEY_UNKNOWN, /* 0x12: FN+PGDOWN */
2357 KEY_ZOOM, /* 0x13: FN+SPACE (zoom) */
0f089147
HMH		 2358
2359 /* Volume: z60/z61, T60 (BIOS version?): firmware always
2360 * react to it and reprograms the built-in *extra* mixer.
2361 * Never map it to control another mixer by default.
2362 *
2363 * T60?, T61, R60?, R61: firmware and EC tries to send
2364 * these over the regular keyboard, so these are no-ops,
2365 * but there are still weird bugs re. MUTE, so do not
2366 * change unless you get test reports from all Lenovo
2367 * models. May cause the BIOS to interfere with the
2368 * HDA mixer.
2369 */
e927c08d
HMH		 2370 KEY_RESERVED, /* 0x14: VOLUME UP */
2371 KEY_RESERVED, /* 0x15: VOLUME DOWN */
2372 KEY_RESERVED, /* 0x16: MUTE */
0f089147 2373
edf0e0e5 2374 KEY_VENDOR, /* 0x17: Thinkpad/AccessIBM/Lenovo */
0f089147 2375
edf0e0e5
HMH		 2376 /* (assignments unknown, please report if found) */
2377 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN,
2378 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN,
2379 };
2380
2381#define TPACPI_HOTKEY_MAP_LEN ARRAY_SIZE(ibm_keycode_map)
2382#define TPACPI_HOTKEY_MAP_SIZE sizeof(ibm_keycode_map)
2383#define TPACPI_HOTKEY_MAP_TYPESIZE sizeof(ibm_keycode_map[0])
2384
6a38abbf 2385 int res, i;
74941a69 2386 int status;
1b6521dc 2387 int hkeyv;
b86c4722 2388
56e2c200
HMH		 2389 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY,
2390 "initializing hotkey subdriver\n");
fe08bc4b 2391
6a38abbf 2392 BUG_ON(!tpacpi_inputdev);
01e88f25
HMH		 2393 BUG_ON(tpacpi_inputdev->open != NULL ||
2394 tpacpi_inputdev->close != NULL);
6a38abbf 2395
e0c7dfe7 2396 TPACPI_ACPIHANDLE_INIT(hkey);
40ca9fdf 2397 mutex_init(&hotkey_mutex);
5fba344c 2398
01e88f25
HMH		 2399#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
2400 mutex_init(&hotkey_thread_mutex);
2401 mutex_init(&hotkey_thread_data_mutex);
2402#endif
2403
56b6aeb0 2404 /* hotkey not supported on 570 */
d8fd94d9 2405 tp_features.hotkey = hkey_handle != NULL;
56b6aeb0 2406
56e2c200
HMH		 2407 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY,
2408 "hotkeys are %s\n",
d8fd94d9 2409 str_supported(tp_features.hotkey));
fe08bc4b 2410
9c0a76e1
HMH		 2411 if (!tp_features.hotkey)
2412 return 1;
a0416420 2413
d64c81c4
HMH		 2414 tpacpi_disable_brightness_delay();
2415
9c0a76e1
HMH		 2416 hotkey_dev_attributes = create_attr_set(13, NULL);
2417 if (!hotkey_dev_attributes)
2418 return -ENOMEM;
2419 res = add_many_to_attr_set(hotkey_dev_attributes,
2420 hotkey_attributes,
2421 ARRAY_SIZE(hotkey_attributes));
2422 if (res)
2423 goto err_exit;
2424
2425 /* mask not supported on 570, 600e/x, 770e, 770x, A21e, A2xm/p,
2426 A30, R30, R31, T20-22, X20-21, X22-24. Detected by checking
2427 for HKEY interface version 0x100 */
2428 if (acpi_evalf(hkey_handle, &hkeyv, "MHKV", "qd")) {
2429 if ((hkeyv >> 8) != 1) {
2430 printk(TPACPI_ERR "unknown version of the "
2431 "HKEY interface: 0x%x\n", hkeyv);
2432 printk(TPACPI_ERR "please report this to %s\n",
2433 TPACPI_MAIL);
2434 } else {
2435 /*
2436 * MHKV 0x100 in A31, R40, R40e,
2437 * T4x, X31, and later
2438 */
2439 tp_features.hotkey_mask = 1;
56e2c200
HMH		 2440 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY,
2441 "firmware HKEY interface version: 0x%x\n",
2442 hkeyv);
1b6521dc 2443 }
9c0a76e1 2444 }
56b6aeb0 2445
56e2c200
HMH		 2446 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY,
2447 "hotkey masks are %s\n",
9c0a76e1 2448 str_supported(tp_features.hotkey_mask));
fe08bc4b 2449
9c0a76e1
HMH		 2450 if (tp_features.hotkey_mask) {
2451 if (!acpi_evalf(hkey_handle, &hotkey_all_mask,
2452 "MHKA", "qd")) {
2453 printk(TPACPI_ERR
2454 "missing MHKA handler, "
2455 "please report this to %s\n",
2456 TPACPI_MAIL);
2457 /* FN+F12, FN+F4, FN+F3 */
2458 hotkey_all_mask = 0x080cU;
9b010de5 2459 }
9c0a76e1 2460 }
9b010de5 2461
9c0a76e1
HMH		 2462 /* hotkey_source_mask *must* be zero for
2463 * the first hotkey_mask_get */
9c0a76e1
HMH		 2464 if (tp_features.hotkey_mask) {
2465 res = hotkey_mask_get();
2466 if (res)
2467 goto err_exit;
2468
2469 hotkey_orig_mask = hotkey_mask;
2470 res = add_many_to_attr_set(
2471 hotkey_dev_attributes,
2472 hotkey_mask_attributes,
2473 ARRAY_SIZE(hotkey_mask_attributes));
2474 if (res)
2475 goto err_exit;
2476 }
74941a69 2477
01e88f25 2478#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
9c0a76e1
HMH		 2479 if (tp_features.hotkey_mask) {
2480 hotkey_source_mask = TPACPI_HKEY_NVRAM_GOOD_MASK
2481 & ~hotkey_all_mask;
2482 } else {
2483 hotkey_source_mask = TPACPI_HKEY_NVRAM_GOOD_MASK;
2484 }
01e88f25 2485
56e2c200 2486 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY,
9c0a76e1
HMH		 2487 "hotkey source mask 0x%08x, polling freq %d\n",
2488 hotkey_source_mask, hotkey_poll_freq);
01e88f25
HMH		 2489#endif
2490
a73f3091
HMH		 2491#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
2492 if (dbg_wlswemul) {
2493 tp_features.hotkey_wlsw = 1;
2494 printk(TPACPI_INFO
2495 "radio switch emulation enabled\n");
2496 } else
2497#endif
9c0a76e1
HMH		 2498 /* Not all thinkpads have a hardware radio switch */
2499 if (acpi_evalf(hkey_handle, &status, "WLSW", "qd")) {
2500 tp_features.hotkey_wlsw = 1;
2501 printk(TPACPI_INFO
2502 "radio switch found; radios are %s\n",
2503 enabled(status, 0));
3a872080
HMH		 2504 }
2505 if (tp_features.hotkey_wlsw)
9c0a76e1
HMH		 2506 res = add_to_attr_set(hotkey_dev_attributes,
2507 &dev_attr_hotkey_radio_sw.attr);
74941a69 2508
9c0a76e1
HMH		 2509 /* For X41t, X60t, X61t Tablets... */
2510 if (!res && acpi_evalf(hkey_handle, &status, "MHKG", "qd")) {
2511 tp_features.hotkey_tablet = 1;
2512 printk(TPACPI_INFO
2513 "possible tablet mode switch found; "
2514 "ThinkPad in %s mode\n",
2515 (status & TP_HOTKEY_TABLET_MASK)?
2516 "tablet" : "laptop");
2517 res = add_to_attr_set(hotkey_dev_attributes,
2518 &dev_attr_hotkey_tablet_mode.attr);
2519 }
6c231bd5 2520
9c0a76e1
HMH		 2521 if (!res)
2522 res = register_attr_set_with_sysfs(
2523 hotkey_dev_attributes,
2524 &tpacpi_pdev->dev.kobj);
2525 if (res)
2526 goto err_exit;
6a38abbf 2527
9c0a76e1 2528 /* Set up key map */
edf0e0e5 2529
9c0a76e1
HMH		 2530 hotkey_keycode_map = kmalloc(TPACPI_HOTKEY_MAP_SIZE,
2531 GFP_KERNEL);
2532 if (!hotkey_keycode_map) {
2533 printk(TPACPI_ERR
2534 "failed to allocate memory for key map\n");
2535 res = -ENOMEM;
2536 goto err_exit;
2537 }
edf0e0e5 2538
9c0a76e1 2539 if (thinkpad_id.vendor == PCI_VENDOR_ID_LENOVO) {
56e2c200 2540 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY,
9c0a76e1
HMH		 2541 "using Lenovo default hot key map\n");
2542 memcpy(hotkey_keycode_map, &lenovo_keycode_map,
2543 TPACPI_HOTKEY_MAP_SIZE);
2544 } else {
56e2c200 2545 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY,
9c0a76e1
HMH		 2546 "using IBM default hot key map\n");
2547 memcpy(hotkey_keycode_map, &ibm_keycode_map,
2548 TPACPI_HOTKEY_MAP_SIZE);
2549 }
edf0e0e5 2550
9c0a76e1
HMH		 2551 set_bit(EV_KEY, tpacpi_inputdev->evbit);
2552 set_bit(EV_MSC, tpacpi_inputdev->evbit);
2553 set_bit(MSC_SCAN, tpacpi_inputdev->mscbit);
2554 tpacpi_inputdev->keycodesize = TPACPI_HOTKEY_MAP_TYPESIZE;
2555 tpacpi_inputdev->keycodemax = TPACPI_HOTKEY_MAP_LEN;
2556 tpacpi_inputdev->keycode = hotkey_keycode_map;
2557 for (i = 0; i < TPACPI_HOTKEY_MAP_LEN; i++) {
2558 if (hotkey_keycode_map[i] != KEY_RESERVED) {
2559 set_bit(hotkey_keycode_map[i],
2560 tpacpi_inputdev->keybit);
2561 } else {
2562 if (i < sizeof(hotkey_reserved_mask)*8)
2563 hotkey_reserved_mask |= 1 << i;
6a38abbf 2564 }
9c0a76e1 2565 }
6a38abbf 2566
9c0a76e1
HMH		 2567 if (tp_features.hotkey_wlsw) {
2568 set_bit(EV_SW, tpacpi_inputdev->evbit);
2569 set_bit(SW_RFKILL_ALL, tpacpi_inputdev->swbit);
2570 }
2571 if (tp_features.hotkey_tablet) {
2572 set_bit(EV_SW, tpacpi_inputdev->evbit);
2573 set_bit(SW_TABLET_MODE, tpacpi_inputdev->swbit);
2574 }
5c29d58f 2575
9c0a76e1
HMH		 2576 /* Do not issue duplicate brightness change events to
2577 * userspace */
2578 if (!tp_features.bright_acpimode)
2579 /* update bright_acpimode... */
2580 tpacpi_check_std_acpi_brightness_support();
b5972796 2581
9c0a76e1
HMH		 2582 if (tp_features.bright_acpimode) {
2583 printk(TPACPI_INFO
2584 "This ThinkPad has standard ACPI backlight "
2585 "brightness control, supported by the ACPI "
2586 "video driver\n");
2587 printk(TPACPI_NOTICE
2588 "Disabling thinkpad-acpi brightness events "
2589 "by default...\n");
2590
2591 /* The hotkey_reserved_mask change below is not
2592 * necessary while the keys are at KEY_RESERVED in the
2593 * default map, but better safe than sorry, leave it
2594 * here as a marker of what we have to do, especially
2595 * when we finally become able to set this at runtime
2596 * on response to X.org requests */
2597 hotkey_reserved_mask |=
2598 (1 << TP_ACPI_HOTKEYSCAN_FNHOME)
2599 | (1 << TP_ACPI_HOTKEYSCAN_FNEND);
2600 }
ff80f137 2601
56e2c200
HMH		 2602 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY,
2603 "enabling firmware HKEY event interface...\n");
2586d566 2604 res = hotkey_status_set(true);
9c0a76e1
HMH		 2605 if (res) {
2606 hotkey_exit();
2607 return res;
2608 }
2609 res = hotkey_mask_set(((hotkey_all_mask | hotkey_source_mask)
2610 & ~hotkey_reserved_mask)
2611 | hotkey_orig_mask);
2612 if (res < 0 && res != -ENXIO) {
2613 hotkey_exit();
2614 return res;
2615 }
01e88f25 2616
56e2c200
HMH		 2617 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY,
2618 "legacy ibm/hotkey event reporting over procfs %s\n",
9c0a76e1
HMH		 2619 (hotkey_report_mode < 2) ?
2620 "enabled" : "disabled");
01e88f25 2621
9c0a76e1
HMH		 2622 tpacpi_inputdev->open = &hotkey_inputdev_open;
2623 tpacpi_inputdev->close = &hotkey_inputdev_close;
56b6aeb0 2624
9c0a76e1 2625 hotkey_poll_setup_safe(1);
733e27c1 2626 tpacpi_send_radiosw_update();
9c0a76e1 2627 tpacpi_input_send_tabletsw();
56b6aeb0 2628
9c0a76e1 2629 return 0;
01e88f25 2630
9c0a76e1
HMH		 2631err_exit:
2632 delete_attr_set(hotkey_dev_attributes, &tpacpi_pdev->dev.kobj);
2633 hotkey_dev_attributes = NULL;
a0416420 2634
9c0a76e1 2635 return (res < 0)? res : 1;
56b6aeb0
HMH		 2636}
2637
3827e7a3
HMH		 2638static bool hotkey_notify_hotkey(const u32 hkey,
2639 bool *send_acpi_ev,
2640 bool *ignore_acpi_ev)
2641{
2642 /* 0x1000-0x1FFF: key presses */
2643 unsigned int scancode = hkey & 0xfff;
2644 *send_acpi_ev = true;
2645 *ignore_acpi_ev = false;
2646
2647 if (scancode > 0 && scancode < 0x21) {
2648 scancode--;
2649 if (!(hotkey_source_mask & (1 << scancode))) {
2650 tpacpi_input_send_key(scancode);
2651 *send_acpi_ev = false;
2652 } else {
2653 *ignore_acpi_ev = true;
2654 }
2655 return true;
2656 }
2657 return false;
2658}
2659
2660static bool hotkey_notify_wakeup(const u32 hkey,
2661 bool *send_acpi_ev,
2662 bool *ignore_acpi_ev)
2663{
2664 /* 0x2000-0x2FFF: Wakeup reason */
2665 *send_acpi_ev = true;
2666 *ignore_acpi_ev = false;
2667
2668 switch (hkey) {
2669 case 0x2304: /* suspend, undock */
2670 case 0x2404: /* hibernation, undock */
2671 hotkey_wakeup_reason = TP_ACPI_WAKEUP_UNDOCK;
2672 *ignore_acpi_ev = true;
2673 break;
2674
2675 case 0x2305: /* suspend, bay eject */
2676 case 0x2405: /* hibernation, bay eject */
2677 hotkey_wakeup_reason = TP_ACPI_WAKEUP_BAYEJ;
2678 *ignore_acpi_ev = true;
2679 break;
2680
106b4e66
HMH		 2681 case 0x2313: /* Battery on critical low level (S3) */
2682 case 0x2413: /* Battery on critical low level (S4) */
2683 printk(TPACPI_ALERT
2684 "EMERGENCY WAKEUP: battery almost empty\n");
2685 /* how to auto-heal: */
2686 /* 2313: woke up from S3, go to S4/S5 */
2687 /* 2413: woke up from S4, go to S5 */
2688 break;
2689
3827e7a3
HMH		 2690 default:
2691 return false;
2692 }
2693
2694 if (hotkey_wakeup_reason != TP_ACPI_WAKEUP_NONE) {
2695 printk(TPACPI_INFO
2696 "woke up due to a hot-unplug "
2697 "request...\n");
2698 hotkey_wakeup_reason_notify_change();
2699 }
2700 return true;
2701}
2702
2703static bool hotkey_notify_usrevent(const u32 hkey,
2704 bool *send_acpi_ev,
2705 bool *ignore_acpi_ev)
2706{
2707 /* 0x5000-0x5FFF: human interface helpers */
2708 *send_acpi_ev = true;
2709 *ignore_acpi_ev = false;
2710
2711 switch (hkey) {
2712 case 0x5010: /* Lenovo new BIOS: brightness changed */
2713 case 0x500b: /* X61t: tablet pen inserted into bay */
2714 case 0x500c: /* X61t: tablet pen removed from bay */
2715 return true;
2716
2717 case 0x5009: /* X41t-X61t: swivel up (tablet mode) */
2718 case 0x500a: /* X41t-X61t: swivel down (normal mode) */
2719 tpacpi_input_send_tabletsw();
2720 hotkey_tablet_mode_notify_change();
2721 *send_acpi_ev = false;
2722 return true;
2723
2724 case 0x5001:
2725 case 0x5002:
2726 /* LID switch events. Do not propagate */
2727 *ignore_acpi_ev = true;
2728 return true;
2729
2730 default:
2731 return false;
2732 }
2733}
2734
106b4e66
HMH		 2735static bool hotkey_notify_thermal(const u32 hkey,
2736 bool *send_acpi_ev,
2737 bool *ignore_acpi_ev)
2738{
2739 /* 0x6000-0x6FFF: thermal alarms */
2740 *send_acpi_ev = true;
2741 *ignore_acpi_ev = false;
2742
2743 switch (hkey) {
2744 case 0x6011:
2745 printk(TPACPI_CRIT
2746 "THERMAL ALARM: battery is too hot!\n");
2747 /* recommended action: warn user through gui */
2748 return true;
2749 case 0x6012:
2750 printk(TPACPI_ALERT
2751 "THERMAL EMERGENCY: battery is extremely hot!\n");
2752 /* recommended action: immediate sleep/hibernate */
2753 return true;
2754 case 0x6021:
2755 printk(TPACPI_CRIT
2756 "THERMAL ALARM: "
2757 "a sensor reports something is too hot!\n");
2758 /* recommended action: warn user through gui, that */
2759 /* some internal component is too hot */
2760 return true;
2761 case 0x6022:
2762 printk(TPACPI_ALERT
2763 "THERMAL EMERGENCY: "
2764 "a sensor reports something is extremely hot!\n");
2765 /* recommended action: immediate sleep/hibernate */
2766 return true;
54926ce8
HMH		 2767 case 0x6030:
2768 printk(TPACPI_INFO
2769 "EC reports that Thermal Table has changed\n");
2770 /* recommended action: do nothing, we don't have
2771 * Lenovo ATM information */
2772 return true;
106b4e66
HMH		 2773 default:
2774 printk(TPACPI_ALERT
2775 "THERMAL ALERT: unknown thermal alarm received\n");
2776 return false;
2777 }
2778}
2779
56b6aeb0
HMH		 2780static void hotkey_notify(struct ibm_struct *ibm, u32 event)
2781{
6a38abbf 2782 u32 hkey;
3827e7a3
HMH		 2783 bool send_acpi_ev;
2784 bool ignore_acpi_ev;
2785 bool known_ev;
3eea123d
HMH		 2786
2787 if (event != 0x80) {
35ff8b9f
HMH		 2788 printk(TPACPI_ERR
2789 "unknown HKEY notification event %d\n", event);
3eea123d 2790 /* forward it to userspace, maybe it knows how to handle it */
35ff8b9f
HMH		 2791 acpi_bus_generate_netlink_event(
2792 ibm->acpi->device->pnp.device_class,
e0b36fc5 2793 dev_name(&ibm->acpi->device->dev),
35ff8b9f 2794 event, 0);
3eea123d
HMH		 2795 return;
2796 }
2797
2798 while (1) {
2799 if (!acpi_evalf(hkey_handle, &hkey, "MHKP", "d")) {
e0c7dfe7 2800 printk(TPACPI_ERR "failed to retrieve HKEY event\n");
3eea123d
HMH		 2801 return;
2802 }
2803
2804 if (hkey == 0) {
2805 /* queue empty */
2806 return;
2807 }
2808
3827e7a3
HMH		 2809 send_acpi_ev = true;
2810 ignore_acpi_ev = false;
56b6aeb0 2811
ff80f137
HMH		 2812 switch (hkey >> 12) {
2813 case 1:
2814 /* 0x1000-0x1FFF: key presses */
3827e7a3
HMH		 2815 known_ev = hotkey_notify_hotkey(hkey, &send_acpi_ev,
2816 &ignore_acpi_ev);
ff80f137 2817 break;
a713b4d7 2818 case 2:
3827e7a3
HMH		 2819 /* 0x2000-0x2FFF: Wakeup reason */
2820 known_ev = hotkey_notify_wakeup(hkey, &send_acpi_ev,
2821 &ignore_acpi_ev);
a713b4d7
HMH		 2822 break;
2823 case 3:
3827e7a3 2824 /* 0x3000-0x3FFF: bay-related wakeups */
a713b4d7
HMH		 2825 if (hkey == 0x3003) {
2826 hotkey_autosleep_ack = 1;
2827 printk(TPACPI_INFO
2828 "bay ejected\n");
50ebec09 2829 hotkey_wakeup_hotunplug_complete_notify_change();
3827e7a3 2830 known_ev = true;
a713b4d7 2831 } else {
3827e7a3 2832 known_ev = false;
a713b4d7
HMH		 2833 }
2834 break;
2835 case 4:
3827e7a3 2836 /* 0x4000-0x4FFF: dock-related wakeups */
a713b4d7
HMH		 2837 if (hkey == 0x4003) {
2838 hotkey_autosleep_ack = 1;
2839 printk(TPACPI_INFO
2840 "undocked\n");
50ebec09 2841 hotkey_wakeup_hotunplug_complete_notify_change();
3827e7a3 2842 known_ev = true;
a713b4d7 2843 } else {
3827e7a3 2844 known_ev = false;
a713b4d7
HMH		 2845 }
2846 break;
ff80f137 2847 case 5:
d1edb2b5 2848 /* 0x5000-0x5FFF: human interface helpers */
3827e7a3
HMH		 2849 known_ev = hotkey_notify_usrevent(hkey, &send_acpi_ev,
2850 &ignore_acpi_ev);
ff80f137 2851 break;
106b4e66
HMH		 2852 case 6:
2853 /* 0x6000-0x6FFF: thermal alarms */
2854 known_ev = hotkey_notify_thermal(hkey, &send_acpi_ev,
2855 &ignore_acpi_ev);
2856 break;
ff80f137
HMH		 2857 case 7:
2858 /* 0x7000-0x7FFF: misc */
2859 if (tp_features.hotkey_wlsw && hkey == 0x7000) {
733e27c1 2860 tpacpi_send_radiosw_update();
3b64b51d 2861 send_acpi_ev = 0;
3827e7a3 2862 known_ev = true;
6a38abbf 2863 break;
6a38abbf 2864 }
ff80f137
HMH		 2865 /* fallthrough to default */
2866 default:
3827e7a3 2867 known_ev = false;
3b64b51d 2868 }
3827e7a3 2869 if (!known_ev) {
35ff8b9f
HMH		 2870 printk(TPACPI_NOTICE
2871 "unhandled HKEY event 0x%04x\n", hkey);
cb429358
HMH		 2872 printk(TPACPI_NOTICE
2873 "please report the conditions when this "
2874 "event happened to %s\n", TPACPI_MAIL);
6a38abbf 2875 }
ff80f137 2876
3eea123d 2877 /* Legacy events */
35ff8b9f
HMH		 2878 if (!ignore_acpi_ev &&
2879 (send_acpi_ev || hotkey_report_mode < 2)) {
2880 acpi_bus_generate_proc_event(ibm->acpi->device,
2881 event, hkey);
3e5ce914 2882 }
ff80f137 2883
3eea123d 2884 /* netlink events */
3e5ce914 2885 if (!ignore_acpi_ev && send_acpi_ev) {
35ff8b9f
HMH		 2886 acpi_bus_generate_netlink_event(
2887 ibm->acpi->device->pnp.device_class,
e0b36fc5 2888 dev_name(&ibm->acpi->device->dev),
35ff8b9f 2889 event, hkey);
3eea123d 2890 }
56b6aeb0
HMH		 2891 }
2892}
2893
a713b4d7
HMH		 2894static void hotkey_suspend(pm_message_t state)
2895{
2896 /* Do these on suspend, we get the events on early resume! */
2897 hotkey_wakeup_reason = TP_ACPI_WAKEUP_NONE;
2898 hotkey_autosleep_ack = 0;
2899}
2900
5c29d58f
HMH		 2901static void hotkey_resume(void)
2902{
d64c81c4
HMH		 2903 tpacpi_disable_brightness_delay();
2904
b2c985e7 2905 if (hotkey_mask_get())
35ff8b9f
HMH		 2906 printk(TPACPI_ERR
2907 "error while trying to read hot key mask "
2908 "from firmware\n");
733e27c1 2909 tpacpi_send_radiosw_update();
6c231bd5 2910 hotkey_tablet_mode_notify_change();
50ebec09
HMH		 2911 hotkey_wakeup_reason_notify_change();
2912 hotkey_wakeup_hotunplug_complete_notify_change();
01e88f25 2913 hotkey_poll_setup_safe(0);
5c29d58f
HMH		 2914}
2915
a0416420 2916/* procfs -------------------------------------------------------------- */
78f81cc4 2917static int hotkey_read(char *p)
1da177e4 2918{
ae92bd17 2919 int res, status;
1da177e4
LT		 2920 int len = 0;
2921
d8fd94d9 2922 if (!tp_features.hotkey) {
78f81cc4
BD		 2923 len += sprintf(p + len, "status:\t\tnot supported\n");
2924 return len;
2925 }
2926
7646ea88 2927 if (mutex_lock_killable(&hotkey_mutex))
fc589a3c 2928 return -ERESTARTSYS;
b2c985e7
HMH		 2929 res = hotkey_status_get(&status);
2930 if (!res)
2931 res = hotkey_mask_get();
40ca9fdf 2932 mutex_unlock(&hotkey_mutex);
b86c4722
HMH		 2933 if (res)
2934 return res;
1da177e4
LT		 2935
2936 len += sprintf(p + len, "status:\t\t%s\n", enabled(status, 0));
d8fd94d9 2937 if (tp_features.hotkey_mask) {
b2c985e7 2938 len += sprintf(p + len, "mask:\t\t0x%08x\n", hotkey_mask);
1da177e4
LT		 2939 len += sprintf(p + len,
2940 "commands:\tenable, disable, reset, <mask>\n");
2941 } else {
2942 len += sprintf(p + len, "mask:\t\tnot supported\n");
2943 len += sprintf(p + len, "commands:\tenable, disable, reset\n");
2944 }
2945
2946 return len;
2947}
2948
406e988b 2949static void hotkey_enabledisable_warn(bool enable)
2586d566
HMH		 2950{
2951 tpacpi_log_usertask("procfs hotkey enable/disable");
406e988b
HMH		 2952 if (!WARN((tpacpi_lifecycle == TPACPI_LIFE_RUNNING || !enable),
2953 TPACPI_WARN
2954 "hotkey enable/disable functionality has been "
2955 "removed from the driver. Hotkeys are always "
2956 "enabled\n"))
2957 printk(TPACPI_ERR
2958 "Please remove the hotkey=enable module "
2959 "parameter, it is deprecated. Hotkeys are always "
2960 "enabled\n");
2586d566
HMH		 2961}
2962
78f81cc4 2963static int hotkey_write(char *buf)
1da177e4 2964{
2586d566 2965 int res;
ae92bd17 2966 u32 mask;
1da177e4 2967 char *cmd;
1da177e4 2968
d8fd94d9 2969 if (!tp_features.hotkey)
1da177e4
LT		 2970 return -ENODEV;
2971
7646ea88 2972 if (mutex_lock_killable(&hotkey_mutex))
fc589a3c 2973 return -ERESTARTSYS;
40ca9fdf 2974
b2c985e7 2975 mask = hotkey_mask;
78f81cc4 2976
40ca9fdf 2977 res = 0;
1da177e4
LT		 2978 while ((cmd = next_cmd(&buf))) {
2979 if (strlencmp(cmd, "enable") == 0) {
406e988b 2980 hotkey_enabledisable_warn(1);
1da177e4 2981 } else if (strlencmp(cmd, "disable") == 0) {
406e988b 2982 hotkey_enabledisable_warn(0);
2586d566 2983 res = -EPERM;
1da177e4 2984 } else if (strlencmp(cmd, "reset") == 0) {
78f81cc4 2985 mask = hotkey_orig_mask;
1da177e4
LT		 2986 } else if (sscanf(cmd, "0x%x", &mask) == 1) {
2987 /* mask set */
2988 } else if (sscanf(cmd, "%x", &mask) == 1) {
2989 /* mask set */
40ca9fdf
HMH		 2990 } else {
2991 res = -EINVAL;
2992 goto errexit;
2993 }
1da177e4 2994 }
56e2c200
HMH		 2995
2996 if (!res)
2997 tpacpi_disclose_usertask("procfs hotkey",
2998 "set mask to 0x%08x\n", mask);
2999
b2c985e7
HMH		 3000 if (!res && mask != hotkey_mask)
3001 res = hotkey_mask_set(mask);
1da177e4 3002
40ca9fdf
HMH		 3003errexit:
3004 mutex_unlock(&hotkey_mutex);
3005 return res;
78f81cc4 3006}
1da177e4 3007
1ba90e3a 3008static const struct acpi_device_id ibm_htk_device_ids[] = {
e0c7dfe7 3009 {TPACPI_ACPI_HKEY_HID, 0},
1ba90e3a
TR		 3010 {"", 0},
3011};
3012
8d376cd6 3013static struct tp_acpi_drv_struct ibm_hotkey_acpidriver = {
1ba90e3a 3014 .hid = ibm_htk_device_ids,
8d376cd6
HMH		 3015 .notify = hotkey_notify,
3016 .handle = &hkey_handle,
3017 .type = ACPI_DEVICE_NOTIFY,
3018};
3019
a5763f22
HMH		 3020static struct ibm_struct hotkey_driver_data = {
3021 .name = "hotkey",
a5763f22
HMH		 3022 .read = hotkey_read,
3023 .write = hotkey_write,
3024 .exit = hotkey_exit,
5c29d58f 3025 .resume = hotkey_resume,
a713b4d7 3026 .suspend = hotkey_suspend,
8d376cd6 3027 .acpi = &ibm_hotkey_acpidriver,
a5763f22
HMH		 3028};
3029
56b6aeb0
HMH		 3030/*************************************************************************
3031 * Bluetooth subdriver
3032 */
1da177e4 3033
f74a27d4
HMH		 3034enum {
3035 /* ACPI GBDC/SBDC bits */
3036 TP_ACPI_BLUETOOTH_HWPRESENT = 0x01, /* Bluetooth hw available */
3037 TP_ACPI_BLUETOOTH_RADIOSSW = 0x02, /* Bluetooth radio enabled */
153f8220
HMH		 3038 TP_ACPI_BLUETOOTH_RESUMECTRL = 0x04, /* Bluetooth state at resume:
3039 off / last state */
3040};
3041
3042enum {
3043 /* ACPI \BLTH commands */
3044 TP_ACPI_BLTH_GET_ULTRAPORT_ID = 0x00, /* Get Ultraport BT ID */
3045 TP_ACPI_BLTH_GET_PWR_ON_RESUME = 0x01, /* Get power-on-resume state */
3046 TP_ACPI_BLTH_PWR_ON_ON_RESUME = 0x02, /* Resume powered on */
3047 TP_ACPI_BLTH_PWR_OFF_ON_RESUME = 0x03, /* Resume powered off */
3048 TP_ACPI_BLTH_SAVE_STATE = 0x05, /* Save state for S4/S5 */
f74a27d4
HMH		 3049};
3050
bee4cd9b
HMH		 3051#define TPACPI_RFK_BLUETOOTH_SW_NAME "tpacpi_bluetooth_sw"
3052
0e74dc26
HMH		 3053static struct rfkill *tpacpi_bluetooth_rfkill;
3054
153f8220
HMH		 3055static void bluetooth_suspend(pm_message_t state)
3056{
3057 /* Try to make sure radio will resume powered off */
bee4cd9b
HMH		 3058 if (!acpi_evalf(NULL, NULL, "\\BLTH", "vd",
3059 TP_ACPI_BLTH_PWR_OFF_ON_RESUME))
3060 vdbg_printk(TPACPI_DBG_RFKILL,
3061 "bluetooth power down on resume request failed\n");
153f8220
HMH		 3062}
3063
07431ec8
HMH		 3064static int bluetooth_get_radiosw(void)
3065{
3066 int status;
3067
3068 if (!tp_features.bluetooth)
3069 return -ENODEV;
3070
133ec3bd
HMH		 3071 /* WLSW overrides bluetooth in firmware/hardware, reflect that */
3072 if (tp_features.hotkey_wlsw && !hotkey_get_wlsw(&status) && !status)
0e74dc26 3073 return RFKILL_STATE_HARD_BLOCKED;
133ec3bd 3074
a73f3091
HMH		 3075#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
3076 if (dbg_bluetoothemul)
3077 return (tpacpi_bluetooth_emulstate) ?
3078 RFKILL_STATE_UNBLOCKED : RFKILL_STATE_SOFT_BLOCKED;
3079#endif
3080
07431ec8
HMH		 3081 if (!acpi_evalf(hkey_handle, &status, "GBDC", "d"))
3082 return -EIO;
3083
0e74dc26
HMH		 3084 return ((status & TP_ACPI_BLUETOOTH_RADIOSSW) != 0) ?
3085 RFKILL_STATE_UNBLOCKED : RFKILL_STATE_SOFT_BLOCKED;
07431ec8
HMH		 3086}
3087
0e74dc26
HMH		 3088static void bluetooth_update_rfk(void)
3089{
3090 int status;
3091
3092 if (!tpacpi_bluetooth_rfkill)
3093 return;
3094
3095 status = bluetooth_get_radiosw();
3096 if (status < 0)
3097 return;
3098 rfkill_force_state(tpacpi_bluetooth_rfkill, status);
bee4cd9b
HMH		 3099
3100 vdbg_printk(TPACPI_DBG_RFKILL,
3101 "forced rfkill state to %d\n",
3102 status);
0e74dc26
HMH		 3103}
3104
3105static int bluetooth_set_radiosw(int radio_on, int update_rfk)
07431ec8
HMH		 3106{
3107 int status;
3108
3109 if (!tp_features.bluetooth)
3110 return -ENODEV;
3111
133ec3bd
HMH		 3112 /* WLSW overrides bluetooth in firmware/hardware, but there is no
3113 * reason to risk weird behaviour. */
3114 if (tp_features.hotkey_wlsw && !hotkey_get_wlsw(&status) && !status
3115 && radio_on)
3116 return -EPERM;
3117
bee4cd9b
HMH		 3118 vdbg_printk(TPACPI_DBG_RFKILL,
3119 "will %s bluetooth\n", radio_on ? "enable" : "disable");
3120
a73f3091
HMH		 3121#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
3122 if (dbg_bluetoothemul) {
3123 tpacpi_bluetooth_emulstate = !!radio_on;
3124 if (update_rfk)
3125 bluetooth_update_rfk();
3126 return 0;
3127 }
3128#endif
3129
153f8220 3130 /* We make sure to keep TP_ACPI_BLUETOOTH_RESUMECTRL off */
07431ec8 3131 if (radio_on)
153f8220 3132 status = TP_ACPI_BLUETOOTH_RADIOSSW;
07431ec8 3133 else
153f8220 3134 status = 0;
07431ec8
HMH		 3135 if (!acpi_evalf(hkey_handle, NULL, "SBDC", "vd", status))
3136 return -EIO;
3137
0e74dc26
HMH		 3138 if (update_rfk)
3139 bluetooth_update_rfk();
3140
07431ec8
HMH		 3141 return 0;
3142}
f74a27d4 3143
d3a6ade4
HMH		 3144/* sysfs bluetooth enable ---------------------------------------------- */
3145static ssize_t bluetooth_enable_show(struct device *dev,
3146 struct device_attribute *attr,
3147 char *buf)
3148{
3149 int status;
3150
73a94d86
HMH		 3151 printk_deprecated_rfkill_attribute("bluetooth_enable");
3152
d3a6ade4
HMH		 3153 status = bluetooth_get_radiosw();
3154 if (status < 0)
3155 return status;
3156
0e74dc26
HMH		 3157 return snprintf(buf, PAGE_SIZE, "%d\n",
3158 (status == RFKILL_STATE_UNBLOCKED) ? 1 : 0);
d3a6ade4
HMH		 3159}
3160
3161static ssize_t bluetooth_enable_store(struct device *dev,
3162 struct device_attribute *attr,
3163 const char *buf, size_t count)
3164{
3165 unsigned long t;
3166 int res;
3167
73a94d86
HMH		 3168 printk_deprecated_rfkill_attribute("bluetooth_enable");
3169
d3a6ade4
HMH		 3170 if (parse_strtoul(buf, 1, &t))
3171 return -EINVAL;
3172
bee4cd9b
HMH		 3173 tpacpi_disclose_usertask("bluetooth_enable", "set to %ld\n", t);
3174
0e74dc26 3175 res = bluetooth_set_radiosw(t, 1);
d3a6ade4
HMH		 3176
3177 return (res) ? res : count;
3178}
3179
3180static struct device_attribute dev_attr_bluetooth_enable =
cc4c24e1 3181 __ATTR(bluetooth_enable, S_IWUSR | S_IRUGO,
d3a6ade4
HMH		 3182 bluetooth_enable_show, bluetooth_enable_store);
3183
3184/* --------------------------------------------------------------------- */
3185
3186static struct attribute *bluetooth_attributes[] = {
3187 &dev_attr_bluetooth_enable.attr,
3188 NULL
3189};
3190
3191static const struct attribute_group bluetooth_attr_group = {
d3a6ade4
HMH		 3192 .attrs = bluetooth_attributes,
3193};
3194
0e74dc26
HMH		 3195static int tpacpi_bluetooth_rfk_get(void *data, enum rfkill_state *state)
3196{
3197 int bts = bluetooth_get_radiosw();
3198
3199 if (bts < 0)
3200 return bts;
3201
3202 *state = bts;
3203 return 0;
3204}
3205
3206static int tpacpi_bluetooth_rfk_set(void *data, enum rfkill_state state)
3207{
bee4cd9b
HMH		 3208 dbg_printk(TPACPI_DBG_RFKILL,
3209 "request to change radio state to %d\n", state);
0e74dc26
HMH		 3210 return bluetooth_set_radiosw((state == RFKILL_STATE_UNBLOCKED), 0);
3211}
3212
90d9d3c7
HMH		 3213static void bluetooth_shutdown(void)
3214{
3215 /* Order firmware to save current state to NVRAM */
3216 if (!acpi_evalf(NULL, NULL, "\\BLTH", "vd",
3217 TP_ACPI_BLTH_SAVE_STATE))
3218 printk(TPACPI_NOTICE
3219 "failed to save bluetooth state to NVRAM\n");
bee4cd9b
HMH		 3220 else
3221 vdbg_printk(TPACPI_DBG_RFKILL,
3222 "bluestooth state saved to NVRAM\n");
90d9d3c7
HMH		 3223}
3224
07431ec8
HMH		 3225static void bluetooth_exit(void)
3226{
90d9d3c7
HMH		 3227 bluetooth_shutdown();
3228
0e74dc26
HMH		 3229 if (tpacpi_bluetooth_rfkill)
3230 rfkill_unregister(tpacpi_bluetooth_rfkill);
3231
07431ec8
HMH		 3232 sysfs_remove_group(&tpacpi_pdev->dev.kobj,
3233 &bluetooth_attr_group);
3234}
3235
a5763f22 3236static int __init bluetooth_init(struct ibm_init_struct *iibm)
1da177e4 3237{
d3a6ade4 3238 int res;
d6fdd1e9
HMH		 3239 int status = 0;
3240
bee4cd9b
HMH		 3241 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL,
3242 "initializing bluetooth subdriver\n");
fe08bc4b 3243
e0c7dfe7 3244 TPACPI_ACPIHANDLE_INIT(hkey);
5fba344c 3245
78f81cc4
BD		 3246 /* bluetooth not supported on 570, 600e/x, 770e, 770x, A21e, A2xm/p,
3247 G4x, R30, R31, R40e, R50e, T20-22, X20-21 */
d8fd94d9 3248 tp_features.bluetooth = hkey_handle &&
d6fdd1e9
HMH		 3249 acpi_evalf(hkey_handle, &status, "GBDC", "qd");
3250
bee4cd9b
HMH		 3251 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL,
3252 "bluetooth is %s, status 0x%02x\n",
d6fdd1e9
HMH		 3253 str_supported(tp_features.bluetooth),
3254 status);
3255
a73f3091
HMH		 3256#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
3257 if (dbg_bluetoothemul) {
3258 tp_features.bluetooth = 1;
3259 printk(TPACPI_INFO
3260 "bluetooth switch emulation enabled\n");
3261 } else
3262#endif
3a872080
HMH		 3263 if (tp_features.bluetooth &&
3264 !(status & TP_ACPI_BLUETOOTH_HWPRESENT)) {
3265 /* no bluetooth hardware present in system */
3266 tp_features.bluetooth = 0;
bee4cd9b 3267 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL,
3a872080
HMH		 3268 "bluetooth hardware not installed\n");
3269 }
3270
0e74dc26
HMH		 3271 if (!tp_features.bluetooth)
3272 return 1;
3273
3274 res = sysfs_create_group(&tpacpi_pdev->dev.kobj,
3a872080 3275 &bluetooth_attr_group);
0e74dc26
HMH		 3276 if (res)
3277 return res;
3278
3279 res = tpacpi_new_rfkill(TPACPI_RFK_BLUETOOTH_SW_ID,
3280 &tpacpi_bluetooth_rfkill,
3281 RFKILL_TYPE_BLUETOOTH,
bee4cd9b 3282 TPACPI_RFK_BLUETOOTH_SW_NAME,
0045c0aa 3283 true,
0e74dc26
HMH		 3284 tpacpi_bluetooth_rfk_set,
3285 tpacpi_bluetooth_rfk_get);
3286 if (res) {
3287 bluetooth_exit();
3288 return res;
d6fdd1e9 3289 }
fe08bc4b 3290
0e74dc26 3291 return 0;
1da177e4
LT		 3292}
3293
d3a6ade4 3294/* procfs -------------------------------------------------------------- */
78f81cc4 3295static int bluetooth_read(char *p)
1da177e4
LT		 3296{
3297 int len = 0;
d6fdd1e9 3298 int status = bluetooth_get_radiosw();
1da177e4 3299
d8fd94d9 3300 if (!tp_features.bluetooth)
1da177e4 3301 len += sprintf(p + len, "status:\t\tnot supported\n");
1da177e4 3302 else {
d6fdd1e9 3303 len += sprintf(p + len, "status:\t\t%s\n",
0e74dc26
HMH		 3304 (status == RFKILL_STATE_UNBLOCKED) ?
3305 "enabled" : "disabled");
1da177e4
LT		 3306 len += sprintf(p + len, "commands:\tenable, disable\n");
3307 }
3308
3309 return len;
3310}
3311
78f81cc4 3312static int bluetooth_write(char *buf)
1da177e4 3313{
1da177e4 3314 char *cmd;
bee4cd9b 3315 int state = -1;
1da177e4 3316
d8fd94d9 3317 if (!tp_features.bluetooth)
78f81cc4 3318 return -ENODEV;
1da177e4
LT		 3319
3320 while ((cmd = next_cmd(&buf))) {
3321 if (strlencmp(cmd, "enable") == 0) {
bee4cd9b 3322 state = 1;
1da177e4 3323 } else if (strlencmp(cmd, "disable") == 0) {
bee4cd9b 3324 state = 0;
1da177e4
LT		 3325 } else
3326 return -EINVAL;
1da177e4
LT		 3327 }
3328
bee4cd9b
HMH		 3329 if (state != -1) {
3330 tpacpi_disclose_usertask("procfs bluetooth",
3331 "attempt to %s\n",
3332 state ? "enable" : "disable");
3333 bluetooth_set_radiosw(state, 1);
3334 }
3335
1da177e4
LT		 3336 return 0;
3337}
3338
a5763f22
HMH		 3339static struct ibm_struct bluetooth_driver_data = {
3340 .name = "bluetooth",
3341 .read = bluetooth_read,
3342 .write = bluetooth_write,
d3a6ade4 3343 .exit = bluetooth_exit,
153f8220 3344 .suspend = bluetooth_suspend,
90d9d3c7 3345 .shutdown = bluetooth_shutdown,
a5763f22
HMH		 3346};
3347
56b6aeb0
HMH		 3348/*************************************************************************
3349 * Wan subdriver
3350 */
3351
f74a27d4
HMH		 3352enum {
3353 /* ACPI GWAN/SWAN bits */
3354 TP_ACPI_WANCARD_HWPRESENT = 0x01, /* Wan hw available */
3355 TP_ACPI_WANCARD_RADIOSSW = 0x02, /* Wan radio enabled */
153f8220
HMH		 3356 TP_ACPI_WANCARD_RESUMECTRL = 0x04, /* Wan state at resume:
3357 off / last state */
f74a27d4
HMH		 3358};
3359
bee4cd9b
HMH		 3360#define TPACPI_RFK_WWAN_SW_NAME "tpacpi_wwan_sw"
3361
0e74dc26
HMH		 3362static struct rfkill *tpacpi_wan_rfkill;
3363
153f8220
HMH		 3364static void wan_suspend(pm_message_t state)
3365{
3366 /* Try to make sure radio will resume powered off */
bee4cd9b
HMH		 3367 if (!acpi_evalf(NULL, NULL, "\\WGSV", "qvd",
3368 TP_ACPI_WGSV_PWR_OFF_ON_RESUME))
3369 vdbg_printk(TPACPI_DBG_RFKILL,
3370 "WWAN power down on resume request failed\n");
153f8220
HMH		 3371}
3372
07431ec8
HMH		 3373static int wan_get_radiosw(void)
3374{
3375 int status;
3376
3377 if (!tp_features.wan)
3378 return -ENODEV;
3379
133ec3bd
HMH		 3380 /* WLSW overrides WWAN in firmware/hardware, reflect that */
3381 if (tp_features.hotkey_wlsw && !hotkey_get_wlsw(&status) && !status)
0e74dc26 3382 return RFKILL_STATE_HARD_BLOCKED;
133ec3bd 3383
a73f3091
HMH		 3384#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
3385 if (dbg_wwanemul)
3386 return (tpacpi_wwan_emulstate) ?
3387 RFKILL_STATE_UNBLOCKED : RFKILL_STATE_SOFT_BLOCKED;
3388#endif
3389
07431ec8
HMH		 3390 if (!acpi_evalf(hkey_handle, &status, "GWAN", "d"))
3391 return -EIO;
3392
0e74dc26
HMH		 3393 return ((status & TP_ACPI_WANCARD_RADIOSSW) != 0) ?
3394 RFKILL_STATE_UNBLOCKED : RFKILL_STATE_SOFT_BLOCKED;
07431ec8
HMH		 3395}
3396
0e74dc26
HMH		 3397static void wan_update_rfk(void)
3398{
3399 int status;
3400
3401 if (!tpacpi_wan_rfkill)
3402 return;
3403
3404 status = wan_get_radiosw();
3405 if (status < 0)
3406 return;
3407 rfkill_force_state(tpacpi_wan_rfkill, status);
bee4cd9b
HMH		 3408
3409 vdbg_printk(TPACPI_DBG_RFKILL,
3410 "forced rfkill state to %d\n",
3411 status);
0e74dc26
HMH		 3412}
3413
3414static int wan_set_radiosw(int radio_on, int update_rfk)
07431ec8
HMH		 3415{
3416 int status;
3417
3418 if (!tp_features.wan)
3419 return -ENODEV;
3420
133ec3bd
HMH		 3421 /* WLSW overrides bluetooth in firmware/hardware, but there is no
3422 * reason to risk weird behaviour. */
3423 if (tp_features.hotkey_wlsw && !hotkey_get_wlsw(&status) && !status
3424 && radio_on)
3425 return -EPERM;
3426
bee4cd9b
HMH		 3427 vdbg_printk(TPACPI_DBG_RFKILL,
3428 "will %s WWAN\n", radio_on ? "enable" : "disable");
3429
a73f3091
HMH		 3430#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
3431 if (dbg_wwanemul) {
3432 tpacpi_wwan_emulstate = !!radio_on;
3433 if (update_rfk)
3434 wan_update_rfk();
3435 return 0;
3436 }
3437#endif
3438
153f8220 3439 /* We make sure to keep TP_ACPI_WANCARD_RESUMECTRL off */
07431ec8 3440 if (radio_on)
153f8220 3441 status = TP_ACPI_WANCARD_RADIOSSW;
07431ec8 3442 else
153f8220 3443 status = 0;
07431ec8
HMH		 3444 if (!acpi_evalf(hkey_handle, NULL, "SWAN", "vd", status))
3445 return -EIO;
3446
0e74dc26
HMH		 3447 if (update_rfk)
3448 wan_update_rfk();
3449
07431ec8
HMH		 3450 return 0;
3451}
f74a27d4 3452
d3a6ade4
HMH		 3453/* sysfs wan enable ---------------------------------------------------- */
3454static ssize_t wan_enable_show(struct device *dev,
3455 struct device_attribute *attr,
3456 char *buf)
3457{
3458 int status;
3459
73a94d86
HMH		 3460 printk_deprecated_rfkill_attribute("wwan_enable");
3461
d3a6ade4
HMH		 3462 status = wan_get_radiosw();
3463 if (status < 0)
3464 return status;
3465
0e74dc26
HMH		 3466 return snprintf(buf, PAGE_SIZE, "%d\n",
3467 (status == RFKILL_STATE_UNBLOCKED) ? 1 : 0);
d3a6ade4
HMH		 3468}
3469
3470static ssize_t wan_enable_store(struct device *dev,
3471 struct device_attribute *attr,
3472 const char *buf, size_t count)
3473{
3474 unsigned long t;
3475 int res;
3476
73a94d86
HMH		 3477 printk_deprecated_rfkill_attribute("wwan_enable");
3478
d3a6ade4
HMH		 3479 if (parse_strtoul(buf, 1, &t))
3480 return -EINVAL;
3481
bee4cd9b
HMH		 3482 tpacpi_disclose_usertask("wwan_enable", "set to %ld\n", t);
3483
0e74dc26 3484 res = wan_set_radiosw(t, 1);
d3a6ade4
HMH		 3485
3486 return (res) ? res : count;
3487}
3488
3489static struct device_attribute dev_attr_wan_enable =
cc4c24e1 3490 __ATTR(wwan_enable, S_IWUSR | S_IRUGO,
d3a6ade4
HMH		 3491 wan_enable_show, wan_enable_store);
3492
3493/* --------------------------------------------------------------------- */
3494
3495static struct attribute *wan_attributes[] = {
3496 &dev_attr_wan_enable.attr,
3497 NULL
3498};
3499
3500static const struct attribute_group wan_attr_group = {
d3a6ade4
HMH		 3501 .attrs = wan_attributes,
3502};
3503
0e74dc26
HMH		 3504static int tpacpi_wan_rfk_get(void *data, enum rfkill_state *state)
3505{
3506 int wans = wan_get_radiosw();
3507
3508 if (wans < 0)
3509 return wans;
3510
3511 *state = wans;
3512 return 0;
3513}
3514
3515static int tpacpi_wan_rfk_set(void *data, enum rfkill_state state)
3516{
bee4cd9b
HMH		 3517 dbg_printk(TPACPI_DBG_RFKILL,
3518 "request to change radio state to %d\n", state);
0e74dc26
HMH		 3519 return wan_set_radiosw((state == RFKILL_STATE_UNBLOCKED), 0);
3520}
3521
90d9d3c7
HMH		 3522static void wan_shutdown(void)
3523{
3524 /* Order firmware to save current state to NVRAM */
3525 if (!acpi_evalf(NULL, NULL, "\\WGSV", "vd",
3526 TP_ACPI_WGSV_SAVE_STATE))
3527 printk(TPACPI_NOTICE
3528 "failed to save WWAN state to NVRAM\n");
bee4cd9b
HMH		 3529 else
3530 vdbg_printk(TPACPI_DBG_RFKILL,
3531 "WWAN state saved to NVRAM\n");
90d9d3c7
HMH		 3532}
3533
07431ec8
HMH		 3534static void wan_exit(void)
3535{
90d9d3c7
HMH		 3536 wan_shutdown();
3537
0e74dc26
HMH		 3538 if (tpacpi_wan_rfkill)
3539 rfkill_unregister(tpacpi_wan_rfkill);
3540
07431ec8
HMH		 3541 sysfs_remove_group(&tpacpi_pdev->dev.kobj,
3542 &wan_attr_group);
3543}
3544
a5763f22 3545static int __init wan_init(struct ibm_init_struct *iibm)
42adb53c 3546{
d3a6ade4 3547 int res;
d6fdd1e9
HMH		 3548 int status = 0;
3549
bee4cd9b
HMH		 3550 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL,
3551 "initializing wan subdriver\n");
fe08bc4b 3552
e0c7dfe7 3553 TPACPI_ACPIHANDLE_INIT(hkey);
5fba344c 3554
d8fd94d9 3555 tp_features.wan = hkey_handle &&
d6fdd1e9
HMH		 3556 acpi_evalf(hkey_handle, &status, "GWAN", "qd");
3557
bee4cd9b
HMH		 3558 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL,
3559 "wan is %s, status 0x%02x\n",
d6fdd1e9
HMH		 3560 str_supported(tp_features.wan),
3561 status);
3562
a73f3091
HMH		 3563#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
3564 if (dbg_wwanemul) {
3565 tp_features.wan = 1;
3566 printk(TPACPI_INFO
3567 "wwan switch emulation enabled\n");
3568 } else
3569#endif
3a872080
HMH		 3570 if (tp_features.wan &&
3571 !(status & TP_ACPI_WANCARD_HWPRESENT)) {
3572 /* no wan hardware present in system */
3573 tp_features.wan = 0;
bee4cd9b 3574 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL,
3a872080
HMH		 3575 "wan hardware not installed\n");
3576 }
3577
0e74dc26
HMH		 3578 if (!tp_features.wan)
3579 return 1;
3580
3581 res = sysfs_create_group(&tpacpi_pdev->dev.kobj,
3a872080 3582 &wan_attr_group);
0e74dc26
HMH		 3583 if (res)
3584 return res;
3585
3586 res = tpacpi_new_rfkill(TPACPI_RFK_WWAN_SW_ID,
3587 &tpacpi_wan_rfkill,
3588 RFKILL_TYPE_WWAN,
bee4cd9b 3589 TPACPI_RFK_WWAN_SW_NAME,
0045c0aa 3590 true,
0e74dc26
HMH		 3591 tpacpi_wan_rfk_set,
3592 tpacpi_wan_rfk_get);
3593 if (res) {
3594 wan_exit();
3595 return res;
d6fdd1e9 3596 }
fe08bc4b 3597
0e74dc26 3598 return 0;
42adb53c
JF		 3599}
3600
d3a6ade4 3601/* procfs -------------------------------------------------------------- */
42adb53c
JF		 3602static int wan_read(char *p)
3603{
3604 int len = 0;
d6fdd1e9 3605 int status = wan_get_radiosw();
42adb53c 3606
bee4cd9b
HMH		 3607 tpacpi_disclose_usertask("procfs wan", "read");
3608
d8fd94d9 3609 if (!tp_features.wan)
42adb53c 3610 len += sprintf(p + len, "status:\t\tnot supported\n");
42adb53c 3611 else {
d6fdd1e9 3612 len += sprintf(p + len, "status:\t\t%s\n",
0e74dc26
HMH		 3613 (status == RFKILL_STATE_UNBLOCKED) ?
3614 "enabled" : "disabled");
42adb53c
JF		 3615 len += sprintf(p + len, "commands:\tenable, disable\n");
3616 }
3617
3618 return len;
3619}
3620
3621static int wan_write(char *buf)
3622{
42adb53c 3623 char *cmd;
bee4cd9b 3624 int state = -1;
42adb53c 3625
d8fd94d9 3626 if (!tp_features.wan)
42adb53c
JF		 3627 return -ENODEV;
3628
3629 while ((cmd = next_cmd(&buf))) {
3630 if (strlencmp(cmd, "enable") == 0) {
bee4cd9b 3631 state = 1;
42adb53c 3632 } else if (strlencmp(cmd, "disable") == 0) {
bee4cd9b 3633 state = 0;
42adb53c
JF		 3634 } else
3635 return -EINVAL;
42adb53c
JF		 3636 }
3637
bee4cd9b
HMH		 3638 if (state != -1) {
3639 tpacpi_disclose_usertask("procfs wan",
3640 "attempt to %s\n",
3641 state ? "enable" : "disable");
3642 wan_set_radiosw(state, 1);
3643 }
3644
42adb53c
JF		 3645 return 0;
3646}
3647
a5763f22
HMH		 3648static struct ibm_struct wan_driver_data = {
3649 .name = "wan",
3650 .read = wan_read,
3651 .write = wan_write,
d3a6ade4 3652 .exit = wan_exit,
153f8220 3653 .suspend = wan_suspend,
90d9d3c7 3654 .shutdown = wan_shutdown,
a5763f22
HMH		 3655};
3656
0045c0aa
HMH		 3657/*************************************************************************
3658 * UWB subdriver
3659 */
3660
3661enum {
3662 /* ACPI GUWB/SUWB bits */
3663 TP_ACPI_UWB_HWPRESENT = 0x01, /* UWB hw available */
3664 TP_ACPI_UWB_RADIOSSW = 0x02, /* UWB radio enabled */
3665};
3666
bee4cd9b
HMH		 3667#define TPACPI_RFK_UWB_SW_NAME "tpacpi_uwb_sw"
3668
0045c0aa
HMH		 3669static struct rfkill *tpacpi_uwb_rfkill;
3670
3671static int uwb_get_radiosw(void)
3672{
3673 int status;
3674
3675 if (!tp_features.uwb)
3676 return -ENODEV;
3677
3678 /* WLSW overrides UWB in firmware/hardware, reflect that */
3679 if (tp_features.hotkey_wlsw && !hotkey_get_wlsw(&status) && !status)
3680 return RFKILL_STATE_HARD_BLOCKED;
3681
3682#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
3683 if (dbg_uwbemul)
3684 return (tpacpi_uwb_emulstate) ?
3685 RFKILL_STATE_UNBLOCKED : RFKILL_STATE_SOFT_BLOCKED;
3686#endif
3687
3688 if (!acpi_evalf(hkey_handle, &status, "GUWB", "d"))
3689 return -EIO;
3690
3691 return ((status & TP_ACPI_UWB_RADIOSSW) != 0) ?
3692 RFKILL_STATE_UNBLOCKED : RFKILL_STATE_SOFT_BLOCKED;
3693}
3694
3695static void uwb_update_rfk(void)
3696{
3697 int status;
3698
3699 if (!tpacpi_uwb_rfkill)
3700 return;
3701
3702 status = uwb_get_radiosw();
3703 if (status < 0)
3704 return;
3705 rfkill_force_state(tpacpi_uwb_rfkill, status);
bee4cd9b
HMH		 3706
3707 vdbg_printk(TPACPI_DBG_RFKILL,
3708 "forced rfkill state to %d\n",
3709 status);
0045c0aa
HMH		 3710}
3711
3712static int uwb_set_radiosw(int radio_on, int update_rfk)
3713{
3714 int status;
3715
3716 if (!tp_features.uwb)
3717 return -ENODEV;
3718
3719 /* WLSW overrides UWB in firmware/hardware, but there is no
3720 * reason to risk weird behaviour. */
3721 if (tp_features.hotkey_wlsw && !hotkey_get_wlsw(&status) && !status
3722 && radio_on)
3723 return -EPERM;
3724
bee4cd9b
HMH		 3725 vdbg_printk(TPACPI_DBG_RFKILL,
3726 "will %s UWB\n", radio_on ? "enable" : "disable");
3727
0045c0aa
HMH		 3728#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
3729 if (dbg_uwbemul) {
3730 tpacpi_uwb_emulstate = !!radio_on;
3731 if (update_rfk)
3732 uwb_update_rfk();
3733 return 0;
3734 }
3735#endif
3736
3737 status = (radio_on) ? TP_ACPI_UWB_RADIOSSW : 0;
3738 if (!acpi_evalf(hkey_handle, NULL, "SUWB", "vd", status))
3739 return -EIO;
3740
3741 if (update_rfk)
3742 uwb_update_rfk();
3743
3744 return 0;
3745}
3746
3747/* --------------------------------------------------------------------- */
3748
3749static int tpacpi_uwb_rfk_get(void *data, enum rfkill_state *state)
3750{
3751 int uwbs = uwb_get_radiosw();
3752
3753 if (uwbs < 0)
3754 return uwbs;
3755
3756 *state = uwbs;
3757 return 0;
3758}
3759
3760static int tpacpi_uwb_rfk_set(void *data, enum rfkill_state state)
3761{
bee4cd9b
HMH		 3762 dbg_printk(TPACPI_DBG_RFKILL,
3763 "request to change radio state to %d\n", state);
0045c0aa
HMH		 3764 return uwb_set_radiosw((state == RFKILL_STATE_UNBLOCKED), 0);
3765}
3766
3767static void uwb_exit(void)
3768{
3769 if (tpacpi_uwb_rfkill)
3770 rfkill_unregister(tpacpi_uwb_rfkill);
3771}
3772
3773static int __init uwb_init(struct ibm_init_struct *iibm)
3774{
3775 int res;
3776 int status = 0;
3777
bee4cd9b
HMH		 3778 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL,
3779 "initializing uwb subdriver\n");
0045c0aa
HMH		 3780
3781 TPACPI_ACPIHANDLE_INIT(hkey);
3782
3783 tp_features.uwb = hkey_handle &&
3784 acpi_evalf(hkey_handle, &status, "GUWB", "qd");
3785
bee4cd9b
HMH		 3786 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL,
3787 "uwb is %s, status 0x%02x\n",
0045c0aa
HMH		 3788 str_supported(tp_features.uwb),
3789 status);
3790
3791#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
3792 if (dbg_uwbemul) {
3793 tp_features.uwb = 1;
3794 printk(TPACPI_INFO
3795 "uwb switch emulation enabled\n");
3796 } else
3797#endif
3798 if (tp_features.uwb &&
3799 !(status & TP_ACPI_UWB_HWPRESENT)) {
3800 /* no uwb hardware present in system */
3801 tp_features.uwb = 0;
3802 dbg_printk(TPACPI_DBG_INIT,
3803 "uwb hardware not installed\n");
3804 }
3805
3806 if (!tp_features.uwb)
3807 return 1;
3808
3809 res = tpacpi_new_rfkill(TPACPI_RFK_UWB_SW_ID,
3810 &tpacpi_uwb_rfkill,
3811 RFKILL_TYPE_UWB,
bee4cd9b 3812 TPACPI_RFK_UWB_SW_NAME,
0045c0aa
HMH		 3813 false,
3814 tpacpi_uwb_rfk_set,
3815 tpacpi_uwb_rfk_get);
3816
3817 return res;
3818}
3819
3820static struct ibm_struct uwb_driver_data = {
3821 .name = "uwb",
3822 .exit = uwb_exit,
3823 .flags.experimental = 1,
3824};
3825
56b6aeb0
HMH		 3826/*************************************************************************
3827 * Video subdriver
3828 */
3829
d7c1d17d
HMH		 3830#ifdef CONFIG_THINKPAD_ACPI_VIDEO
3831
f74a27d4
HMH		 3832enum video_access_mode {
3833 TPACPI_VIDEO_NONE = 0,
3834 TPACPI_VIDEO_570, /* 570 */
3835 TPACPI_VIDEO_770, /* 600e/x, 770e, 770x */
3836 TPACPI_VIDEO_NEW, /* all others */
3837};
3838
3839enum { /* video status flags, based on VIDEO_570 */
3840 TP_ACPI_VIDEO_S_LCD = 0x01, /* LCD output enabled */
3841 TP_ACPI_VIDEO_S_CRT = 0x02, /* CRT output enabled */
3842 TP_ACPI_VIDEO_S_DVI = 0x08, /* DVI output enabled */
3843};
3844
3845enum { /* TPACPI_VIDEO_570 constants */
3846 TP_ACPI_VIDEO_570_PHSCMD = 0x87, /* unknown magic constant :( */
3847 TP_ACPI_VIDEO_570_PHSMASK = 0x03, /* PHS bits that map to
3848 * video_status_flags */
3849 TP_ACPI_VIDEO_570_PHS2CMD = 0x8b, /* unknown magic constant :( */
3850 TP_ACPI_VIDEO_570_PHS2SET = 0x80, /* unknown magic constant :( */
3851};
3852
9a8e1738
HMH		 3853static enum video_access_mode video_supported;
3854static int video_orig_autosw;
78f81cc4 3855
f74a27d4
HMH		 3856static int video_autosw_get(void);
3857static int video_autosw_set(int enable);
3858
e0c7dfe7 3859TPACPI_HANDLE(vid2, root, "\\_SB.PCI0.AGPB.VID"); /* G41 */
56b6aeb0 3860
a5763f22 3861static int __init video_init(struct ibm_init_struct *iibm)
1da177e4 3862{
78f81cc4
BD		 3863 int ivga;
3864
fe08bc4b
HMH		 3865 vdbg_printk(TPACPI_DBG_INIT, "initializing video subdriver\n");
3866
e0c7dfe7
HMH		 3867 TPACPI_ACPIHANDLE_INIT(vid);
3868 TPACPI_ACPIHANDLE_INIT(vid2);
5fba344c 3869
78f81cc4
BD		 3870 if (vid2_handle && acpi_evalf(NULL, &ivga, "\\IVGA", "d") && ivga)
3871 /* G41, assume IVGA doesn't change */
3872 vid_handle = vid2_handle;
3873
3874 if (!vid_handle)
3875 /* video switching not supported on R30, R31 */
efa27145 3876 video_supported = TPACPI_VIDEO_NONE;
78f81cc4
BD		 3877 else if (acpi_evalf(vid_handle, &video_orig_autosw, "SWIT", "qd"))
3878 /* 570 */
efa27145 3879 video_supported = TPACPI_VIDEO_570;
78f81cc4
BD		 3880 else if (acpi_evalf(vid_handle, &video_orig_autosw, "^VADL", "qd"))
3881 /* 600e/x, 770e, 770x */
efa27145 3882 video_supported = TPACPI_VIDEO_770;
78f81cc4
BD		 3883 else
3884 /* all others */
efa27145 3885 video_supported = TPACPI_VIDEO_NEW;
1da177e4 3886
fe08bc4b
HMH		 3887 vdbg_printk(TPACPI_DBG_INIT, "video is %s, mode %d\n",
3888 str_supported(video_supported != TPACPI_VIDEO_NONE),
3889 video_supported);
3890
5fba344c 3891 return (video_supported != TPACPI_VIDEO_NONE)? 0 : 1;
1da177e4
LT		 3892}
3893
56b6aeb0
HMH		 3894static void video_exit(void)
3895{
83f34724
HMH		 3896 dbg_printk(TPACPI_DBG_EXIT,
3897 "restoring original video autoswitch mode\n");
3898 if (video_autosw_set(video_orig_autosw))
e0c7dfe7 3899 printk(TPACPI_ERR "error while trying to restore original "
83f34724 3900 "video autoswitch mode\n");
56b6aeb0
HMH		 3901}
3902
83f34724 3903static int video_outputsw_get(void)
1da177e4
LT		 3904{
3905 int status = 0;
3906 int i;
3907
83f34724
HMH		 3908 switch (video_supported) {
3909 case TPACPI_VIDEO_570:
3910 if (!acpi_evalf(NULL, &i, "\\_SB.PHS", "dd",
3911 TP_ACPI_VIDEO_570_PHSCMD))
3912 return -EIO;
3913 status = i & TP_ACPI_VIDEO_570_PHSMASK;
3914 break;
3915 case TPACPI_VIDEO_770:
3916 if (!acpi_evalf(NULL, &i, "\\VCDL", "d"))
3917 return -EIO;
3918 if (i)
3919 status |= TP_ACPI_VIDEO_S_LCD;
3920 if (!acpi_evalf(NULL, &i, "\\VCDC", "d"))
3921 return -EIO;
3922 if (i)
3923 status |= TP_ACPI_VIDEO_S_CRT;
3924 break;
3925 case TPACPI_VIDEO_NEW:
3926 if (!acpi_evalf(NULL, NULL, "\\VUPS", "vd", 1) ||
3927 !acpi_evalf(NULL, &i, "\\VCDC", "d"))
3928 return -EIO;
3929 if (i)
3930 status |= TP_ACPI_VIDEO_S_CRT;
3931
3932 if (!acpi_evalf(NULL, NULL, "\\VUPS", "vd", 0) ||
3933 !acpi_evalf(NULL, &i, "\\VCDL", "d"))
3934 return -EIO;
3935 if (i)
3936 status |= TP_ACPI_VIDEO_S_LCD;
3937 if (!acpi_evalf(NULL, &i, "\\VCDD", "d"))
3938 return -EIO;
3939 if (i)
3940 status |= TP_ACPI_VIDEO_S_DVI;
3941 break;
3942 default:
3943 return -ENOSYS;
78f81cc4
BD		 3944 }
3945
3946 return status;
3947}
1da177e4 3948
83f34724 3949static int video_outputsw_set(int status)
78f81cc4 3950{
83f34724
HMH		 3951 int autosw;
3952 int res = 0;
3953
3954 switch (video_supported) {
3955 case TPACPI_VIDEO_570:
3956 res = acpi_evalf(NULL, NULL,
3957 "\\_SB.PHS2", "vdd",
3958 TP_ACPI_VIDEO_570_PHS2CMD,
3959 status | TP_ACPI_VIDEO_570_PHS2SET);
3960 break;
3961 case TPACPI_VIDEO_770:
3962 autosw = video_autosw_get();
3963 if (autosw < 0)
3964 return autosw;
1da177e4 3965
83f34724
HMH		 3966 res = video_autosw_set(1);
3967 if (res)
3968 return res;
3969 res = acpi_evalf(vid_handle, NULL,
3970 "ASWT", "vdd", status * 0x100, 0);
3971 if (!autosw && video_autosw_set(autosw)) {
35ff8b9f
HMH		 3972 printk(TPACPI_ERR
3973 "video auto-switch left enabled due to error\n");
83f34724
HMH		 3974 return -EIO;
3975 }
3976 break;
3977 case TPACPI_VIDEO_NEW:
3978 res = acpi_evalf(NULL, NULL, "\\VUPS", "vd", 0x80) &&
35ff8b9f 3979 acpi_evalf(NULL, NULL, "\\VSDS", "vdd", status, 1);
83f34724
HMH		 3980 break;
3981 default:
3982 return -ENOSYS;
3983 }
1da177e4 3984
83f34724 3985 return (res)? 0 : -EIO;
1da177e4
LT		 3986}
3987
83f34724 3988static int video_autosw_get(void)
78f81cc4 3989{
83f34724 3990 int autosw = 0;
78f81cc4 3991
83f34724
HMH		 3992 switch (video_supported) {
3993 case TPACPI_VIDEO_570:
3994 if (!acpi_evalf(vid_handle, &autosw, "SWIT", "d"))
3995 return -EIO;
3996 break;
3997 case TPACPI_VIDEO_770:
3998 case TPACPI_VIDEO_NEW:
3999 if (!acpi_evalf(vid_handle, &autosw, "^VDEE", "d"))
4000 return -EIO;
4001 break;
4002 default:
4003 return -ENOSYS;
4004 }
78f81cc4 4005
83f34724 4006 return autosw & 1;
78f81cc4
BD		 4007}
4008
83f34724 4009static int video_autosw_set(int enable)
78f81cc4 4010{
83f34724
HMH		 4011 if (!acpi_evalf(vid_handle, NULL, "_DOS", "vd", (enable)? 1 : 0))
4012 return -EIO;
4013 return 0;
78f81cc4
BD		 4014}
4015
83f34724 4016static int video_outputsw_cycle(void)
78f81cc4 4017{
83f34724
HMH		 4018 int autosw = video_autosw_get();
4019 int res;
78f81cc4 4020
83f34724
HMH		 4021 if (autosw < 0)
4022 return autosw;
78f81cc4 4023
83f34724
HMH		 4024 switch (video_supported) {
4025 case TPACPI_VIDEO_570:
4026 res = video_autosw_set(1);
4027 if (res)
4028 return res;
4029 res = acpi_evalf(ec_handle, NULL, "_Q16", "v");
4030 break;
4031 case TPACPI_VIDEO_770:
4032 case TPACPI_VIDEO_NEW:
4033 res = video_autosw_set(1);
4034 if (res)
4035 return res;
4036 res = acpi_evalf(vid_handle, NULL, "VSWT", "v");
4037 break;
4038 default:
4039 return -ENOSYS;
4040 }
4041 if (!autosw && video_autosw_set(autosw)) {
35ff8b9f
HMH		 4042 printk(TPACPI_ERR
4043 "video auto-switch left enabled due to error\n");
83f34724 4044 return -EIO;
78f81cc4
BD		 4045 }
4046
83f34724
HMH		 4047 return (res)? 0 : -EIO;
4048}
4049
4050static int video_expand_toggle(void)
4051{
4052 switch (video_supported) {
4053 case TPACPI_VIDEO_570:
4054 return acpi_evalf(ec_handle, NULL, "_Q17", "v")?
4055 0 : -EIO;
4056 case TPACPI_VIDEO_770:
4057 return acpi_evalf(vid_handle, NULL, "VEXP", "v")?
4058 0 : -EIO;
4059 case TPACPI_VIDEO_NEW:
4060 return acpi_evalf(NULL, NULL, "\\VEXP", "v")?
4061 0 : -EIO;
4062 default:
4063 return -ENOSYS;
4064 }
4065 /* not reached */
78f81cc4
BD		 4066}
4067
56b6aeb0
HMH		 4068static int video_read(char *p)
4069{
83f34724 4070 int status, autosw;
56b6aeb0
HMH		 4071 int len = 0;
4072
83f34724 4073 if (video_supported == TPACPI_VIDEO_NONE) {
56b6aeb0
HMH		 4074 len += sprintf(p + len, "status:\t\tnot supported\n");
4075 return len;
4076 }
4077
83f34724
HMH		 4078 status = video_outputsw_get();
4079 if (status < 0)
4080 return status;
4081
4082 autosw = video_autosw_get();
4083 if (autosw < 0)
4084 return autosw;
4085
56b6aeb0
HMH		 4086 len += sprintf(p + len, "status:\t\tsupported\n");
4087 len += sprintf(p + len, "lcd:\t\t%s\n", enabled(status, 0));
4088 len += sprintf(p + len, "crt:\t\t%s\n", enabled(status, 1));
efa27145 4089 if (video_supported == TPACPI_VIDEO_NEW)
56b6aeb0
HMH		 4090 len += sprintf(p + len, "dvi:\t\t%s\n", enabled(status, 3));
4091 len += sprintf(p + len, "auto:\t\t%s\n", enabled(autosw, 0));
4092 len += sprintf(p + len, "commands:\tlcd_enable, lcd_disable\n");
4093 len += sprintf(p + len, "commands:\tcrt_enable, crt_disable\n");
efa27145 4094 if (video_supported == TPACPI_VIDEO_NEW)
56b6aeb0
HMH		 4095 len += sprintf(p + len, "commands:\tdvi_enable, dvi_disable\n");
4096 len += sprintf(p + len, "commands:\tauto_enable, auto_disable\n");
4097 len += sprintf(p + len, "commands:\tvideo_switch, expand_toggle\n");
4098
4099 return len;
4100}
4101
78f81cc4 4102static int video_write(char *buf)
1da177e4
LT		 4103{
4104 char *cmd;
4105 int enable, disable, status;
83f34724 4106 int res;
1da177e4 4107
83f34724 4108 if (video_supported == TPACPI_VIDEO_NONE)
78f81cc4
BD		 4109 return -ENODEV;
4110
83f34724
HMH		 4111 enable = 0;
4112 disable = 0;
1da177e4
LT		 4113
4114 while ((cmd = next_cmd(&buf))) {
4115 if (strlencmp(cmd, "lcd_enable") == 0) {
83f34724 4116 enable |= TP_ACPI_VIDEO_S_LCD;
1da177e4 4117 } else if (strlencmp(cmd, "lcd_disable") == 0) {
83f34724 4118 disable |= TP_ACPI_VIDEO_S_LCD;
1da177e4 4119 } else if (strlencmp(cmd, "crt_enable") == 0) {
83f34724 4120 enable |= TP_ACPI_VIDEO_S_CRT;
1da177e4 4121 } else if (strlencmp(cmd, "crt_disable") == 0) {
83f34724 4122 disable |= TP_ACPI_VIDEO_S_CRT;
efa27145 4123 } else if (video_supported == TPACPI_VIDEO_NEW &&
78f81cc4 4124 strlencmp(cmd, "dvi_enable") == 0) {
83f34724 4125 enable |= TP_ACPI_VIDEO_S_DVI;
efa27145 4126 } else if (video_supported == TPACPI_VIDEO_NEW &&
78f81cc4 4127 strlencmp(cmd, "dvi_disable") == 0) {
83f34724 4128 disable |= TP_ACPI_VIDEO_S_DVI;
1da177e4 4129 } else if (strlencmp(cmd, "auto_enable") == 0) {
83f34724
HMH		 4130 res = video_autosw_set(1);
4131 if (res)
4132 return res;
1da177e4 4133 } else if (strlencmp(cmd, "auto_disable") == 0) {
83f34724
HMH		 4134 res = video_autosw_set(0);
4135 if (res)
4136 return res;
1da177e4 4137 } else if (strlencmp(cmd, "video_switch") == 0) {
83f34724
HMH		 4138 res = video_outputsw_cycle();
4139 if (res)
4140 return res;
1da177e4 4141 } else if (strlencmp(cmd, "expand_toggle") == 0) {
83f34724
HMH		 4142 res = video_expand_toggle();
4143 if (res)
4144 return res;
1da177e4
LT		 4145 } else
4146 return -EINVAL;
4147 }
4148
4149 if (enable || disable) {
83f34724
HMH		 4150 status = video_outputsw_get();
4151 if (status < 0)
4152 return status;
4153 res = video_outputsw_set((status & ~disable) | enable);
4154 if (res)
4155 return res;
1da177e4
LT		 4156 }
4157
4158 return 0;
4159}
4160
a5763f22
HMH		 4161static struct ibm_struct video_driver_data = {
4162 .name = "video",
4163 .read = video_read,
4164 .write = video_write,
4165 .exit = video_exit,
4166};
4167
d7c1d17d
HMH		 4168#endif /* CONFIG_THINKPAD_ACPI_VIDEO */
4169
56b6aeb0
HMH		 4170/*************************************************************************
4171 * Light (thinklight) subdriver
4172 */
1da177e4 4173
e0c7dfe7
HMH		 4174TPACPI_HANDLE(lght, root, "\\LGHT"); /* A21e, A2xm/p, T20-22, X20-21 */
4175TPACPI_HANDLE(ledb, ec, "LEDB"); /* G4x */
56b6aeb0 4176
4fa6811b
HMH		 4177static int light_get_status(void)
4178{
4179 int status = 0;
4180
4181 if (tp_features.light_status) {
4182 if (!acpi_evalf(ec_handle, &status, "KBLT", "d"))
4183 return -EIO;
4184 return (!!status);
4185 }
4186
4187 return -ENXIO;
4188}
4189
4190static int light_set_status(int status)
4191{
4192 int rc;
4193
4194 if (tp_features.light) {
4195 if (cmos_handle) {
4196 rc = acpi_evalf(cmos_handle, NULL, NULL, "vd",
4197 (status)?
4198 TP_CMOS_THINKLIGHT_ON :
4199 TP_CMOS_THINKLIGHT_OFF);
4200 } else {
4201 rc = acpi_evalf(lght_handle, NULL, NULL, "vd",
4202 (status)? 1 : 0);
4203 }
4204 return (rc)? 0 : -EIO;
4205 }
4206
4207 return -ENXIO;
4208}
4209
e306501d
HMH		 4210static void light_set_status_worker(struct work_struct *work)
4211{
4212 struct tpacpi_led_classdev *data =
4213 container_of(work, struct tpacpi_led_classdev, work);
4214
4215 if (likely(tpacpi_lifecycle == TPACPI_LIFE_RUNNING))
4216 light_set_status((data->new_brightness != LED_OFF));
4217}
4218
4219static void light_sysfs_set(struct led_classdev *led_cdev,
4220 enum led_brightness brightness)
4221{
4222 struct tpacpi_led_classdev *data =
4223 container_of(led_cdev,
4224 struct tpacpi_led_classdev,
4225 led_classdev);
4226 data->new_brightness = brightness;
e0e3c061 4227 queue_work(tpacpi_wq, &data->work);
e306501d
HMH		 4228}
4229
4230static enum led_brightness light_sysfs_get(struct led_classdev *led_cdev)
4231{
4232 return (light_get_status() == 1)? LED_FULL : LED_OFF;
4233}
4234
4235static struct tpacpi_led_classdev tpacpi_led_thinklight = {
4236 .led_classdev = {
4237 .name = "tpacpi::thinklight",
4238 .brightness_set = &light_sysfs_set,
4239 .brightness_get = &light_sysfs_get,
4240 }
4241};
4242
a5763f22 4243static int __init light_init(struct ibm_init_struct *iibm)
1da177e4 4244{
9c0a76e1 4245 int rc;
e306501d 4246
fe08bc4b
HMH		 4247 vdbg_printk(TPACPI_DBG_INIT, "initializing light subdriver\n");
4248
e0c7dfe7
HMH		 4249 TPACPI_ACPIHANDLE_INIT(ledb);
4250 TPACPI_ACPIHANDLE_INIT(lght);
4251 TPACPI_ACPIHANDLE_INIT(cmos);
e306501d 4252 INIT_WORK(&tpacpi_led_thinklight.work, light_set_status_worker);
5fba344c 4253
78f81cc4 4254 /* light not supported on 570, 600e/x, 770e, 770x, G4x, R30, R31 */
d8fd94d9 4255 tp_features.light = (cmos_handle || lght_handle) && !ledb_handle;
78f81cc4 4256
d8fd94d9 4257 if (tp_features.light)
78f81cc4
BD		 4258 /* light status not supported on
4259 570, 600e/x, 770e, 770x, G4x, R30, R31, R32, X20 */
d8fd94d9
HMH		 4260 tp_features.light_status =
4261 acpi_evalf(ec_handle, NULL, "KBLT", "qv");
1da177e4 4262
9c0a76e1
HMH		 4263 vdbg_printk(TPACPI_DBG_INIT, "light is %s, light status is %s\n",
4264 str_supported(tp_features.light),
4265 str_supported(tp_features.light_status));
fe08bc4b 4266
9c0a76e1
HMH		 4267 if (!tp_features.light)
4268 return 1;
4269
4270 rc = led_classdev_register(&tpacpi_pdev->dev,
4271 &tpacpi_led_thinklight.led_classdev);
e306501d
HMH		 4272
4273 if (rc < 0) {
4274 tp_features.light = 0;
4275 tp_features.light_status = 0;
9c0a76e1
HMH		 4276 } else {
4277 rc = 0;
e306501d 4278 }
9c0a76e1 4279
e306501d
HMH		 4280 return rc;
4281}
4282
4283static void light_exit(void)
4284{
4285 led_classdev_unregister(&tpacpi_led_thinklight.led_classdev);
4286 if (work_pending(&tpacpi_led_thinklight.work))
e0e3c061 4287 flush_workqueue(tpacpi_wq);
1da177e4
LT		 4288}
4289
78f81cc4 4290static int light_read(char *p)
1da177e4
LT		 4291{
4292 int len = 0;
4fa6811b 4293 int status;
1da177e4 4294
d8fd94d9 4295 if (!tp_features.light) {
78f81cc4 4296 len += sprintf(p + len, "status:\t\tnot supported\n");
d8fd94d9 4297 } else if (!tp_features.light_status) {
78f81cc4
BD		 4298 len += sprintf(p + len, "status:\t\tunknown\n");
4299 len += sprintf(p + len, "commands:\ton, off\n");
4300 } else {
4fa6811b
HMH		 4301 status = light_get_status();
4302 if (status < 0)
4303 return status;
1da177e4 4304 len += sprintf(p + len, "status:\t\t%s\n", onoff(status, 0));
78f81cc4
BD		 4305 len += sprintf(p + len, "commands:\ton, off\n");
4306 }
1da177e4
LT		 4307
4308 return len;
4309}
4310
78f81cc4 4311static int light_write(char *buf)
1da177e4 4312{
1da177e4 4313 char *cmd;
4fa6811b 4314 int newstatus = 0;
78f81cc4 4315
d8fd94d9 4316 if (!tp_features.light)
78f81cc4
BD		 4317 return -ENODEV;
4318
1da177e4
LT		 4319 while ((cmd = next_cmd(&buf))) {
4320 if (strlencmp(cmd, "on") == 0) {
4fa6811b 4321 newstatus = 1;
1da177e4 4322 } else if (strlencmp(cmd, "off") == 0) {
4fa6811b 4323 newstatus = 0;
1da177e4
LT		 4324 } else
4325 return -EINVAL;
1da177e4
LT		 4326 }
4327
4fa6811b 4328 return light_set_status(newstatus);
1da177e4
LT		 4329}
4330
a5763f22
HMH		 4331static struct ibm_struct light_driver_data = {
4332 .name = "light",
4333 .read = light_read,
4334 .write = light_write,
e306501d 4335 .exit = light_exit,
a5763f22
HMH		 4336};
4337
56b6aeb0
HMH		 4338/*************************************************************************
4339 * Dock subdriver
4340 */
1da177e4 4341
85998248 4342#ifdef CONFIG_THINKPAD_ACPI_DOCK
56b6aeb0 4343
f74a27d4
HMH		 4344static void dock_notify(struct ibm_struct *ibm, u32 event);
4345static int dock_read(char *p);
4346static int dock_write(char *buf);
4347
e0c7dfe7 4348TPACPI_HANDLE(dock, root, "\\_SB.GDCK", /* X30, X31, X40 */
56b6aeb0
HMH		 4349 "\\_SB.PCI0.DOCK", /* 600e/x,770e,770x,A2xm/p,T20-22,X20-21 */
4350 "\\_SB.PCI0.PCI1.DOCK", /* all others */
4351 "\\_SB.PCI.ISA.SLCE", /* 570 */
4352 ); /* A21e,G4x,R30,R31,R32,R40,R40e,R50e */
4353
5fba344c 4354/* don't list other alternatives as we install a notify handler on the 570 */
e0c7dfe7 4355TPACPI_HANDLE(pci, root, "\\_SB.PCI"); /* 570 */
5fba344c 4356
1ba90e3a
TR		 4357static const struct acpi_device_id ibm_pci_device_ids[] = {
4358 {PCI_ROOT_HID_STRING, 0},
4359 {"", 0},
4360};
4361
d94a7f16
HMH		 4362static struct tp_acpi_drv_struct ibm_dock_acpidriver[2] = {
4363 {
4364 .notify = dock_notify,
4365 .handle = &dock_handle,
4366 .type = ACPI_SYSTEM_NOTIFY,
4367 },
4368 {
996fba08
HMH		 4369 /* THIS ONE MUST NEVER BE USED FOR DRIVER AUTOLOADING.
4370 * We just use it to get notifications of dock hotplug
4371 * in very old thinkpads */
1ba90e3a 4372 .hid = ibm_pci_device_ids,
d94a7f16
HMH		 4373 .notify = dock_notify,
4374 .handle = &pci_handle,
4375 .type = ACPI_SYSTEM_NOTIFY,
4376 },
4377};
4378
4379static struct ibm_struct dock_driver_data[2] = {
4380 {
4381 .name = "dock",
4382 .read = dock_read,
4383 .write = dock_write,
4384 .acpi = &ibm_dock_acpidriver[0],
4385 },
4386 {
4387 .name = "dock",
4388 .acpi = &ibm_dock_acpidriver[1],
4389 },
4390};
4391
1da177e4
LT		 4392#define dock_docked() (_sta(dock_handle) & 1)
4393
a5763f22 4394static int __init dock_init(struct ibm_init_struct *iibm)
5fba344c 4395{
fe08bc4b
HMH		 4396 vdbg_printk(TPACPI_DBG_INIT, "initializing dock subdriver\n");
4397
e0c7dfe7 4398 TPACPI_ACPIHANDLE_INIT(dock);
5fba344c 4399
fe08bc4b
HMH		 4400 vdbg_printk(TPACPI_DBG_INIT, "dock is %s\n",
4401 str_supported(dock_handle != NULL));
4402
5fba344c
HMH		 4403 return (dock_handle)? 0 : 1;
4404}
4405
d94a7f16
HMH		 4406static int __init dock_init2(struct ibm_init_struct *iibm)
4407{
4408 int dock2_needed;
4409
4410 vdbg_printk(TPACPI_DBG_INIT, "initializing dock subdriver part 2\n");
4411
4412 if (dock_driver_data[0].flags.acpi_driver_registered &&
4413 dock_driver_data[0].flags.acpi_notify_installed) {
e0c7dfe7 4414 TPACPI_ACPIHANDLE_INIT(pci);
d94a7f16
HMH		 4415 dock2_needed = (pci_handle != NULL);
4416 vdbg_printk(TPACPI_DBG_INIT,
4417 "dock PCI handler for the TP 570 is %s\n",
4418 str_supported(dock2_needed));
4419 } else {
4420 vdbg_printk(TPACPI_DBG_INIT,
4421 "dock subdriver part 2 not required\n");
4422 dock2_needed = 0;
4423 }
4424
4425 return (dock2_needed)? 0 : 1;
4426}
4427
56b6aeb0
HMH		 4428static void dock_notify(struct ibm_struct *ibm, u32 event)
4429{
4430 int docked = dock_docked();
1ba90e3a
TR		 4431 int pci = ibm->acpi->hid && ibm->acpi->device &&
4432 acpi_match_device_ids(ibm->acpi->device, ibm_pci_device_ids);
962ce8ca 4433 int data;
56b6aeb0
HMH		 4434
4435 if (event == 1 && !pci) /* 570 */
962ce8ca 4436 data = 1; /* button */
56b6aeb0 4437 else if (event == 1 && pci) /* 570 */
962ce8ca 4438 data = 3; /* dock */
56b6aeb0 4439 else if (event == 3 && docked)
962ce8ca 4440 data = 1; /* button */
56b6aeb0 4441 else if (event == 3 && !docked)
962ce8ca 4442 data = 2; /* undock */
56b6aeb0 4443 else if (event == 0 && docked)
962ce8ca 4444 data = 3; /* dock */
56b6aeb0 4445 else {
e0c7dfe7 4446 printk(TPACPI_ERR "unknown dock event %d, status %d\n",
56b6aeb0 4447 event, _sta(dock_handle));
962ce8ca 4448 data = 0; /* unknown */
56b6aeb0 4449 }
14e04fb3 4450 acpi_bus_generate_proc_event(ibm->acpi->device, event, data);
962ce8ca 4451 acpi_bus_generate_netlink_event(ibm->acpi->device->pnp.device_class,
e0b36fc5 4452 dev_name(&ibm->acpi->device->dev),
962ce8ca 4453 event, data);
56b6aeb0
HMH		 4454}
4455
78f81cc4 4456static int dock_read(char *p)
1da177e4
LT		 4457{
4458 int len = 0;
4459 int docked = dock_docked();
4460
4461 if (!dock_handle)
4462 len += sprintf(p + len, "status:\t\tnot supported\n");
4463 else if (!docked)
4464 len += sprintf(p + len, "status:\t\tundocked\n");
4465 else {
4466 len += sprintf(p + len, "status:\t\tdocked\n");
4467 len += sprintf(p + len, "commands:\tdock, undock\n");
4468 }
4469
4470 return len;
4471}
4472
78f81cc4 4473static int dock_write(char *buf)
1da177e4
LT		 4474{
4475 char *cmd;
4476
4477 if (!dock_docked())
78f81cc4 4478 return -ENODEV;
1da177e4
LT		 4479
4480 while ((cmd = next_cmd(&buf))) {
4481 if (strlencmp(cmd, "undock") == 0) {
78f81cc4
BD		 4482 if (!acpi_evalf(dock_handle, NULL, "_DCK", "vd", 0) ||
4483 !acpi_evalf(dock_handle, NULL, "_EJ0", "vd", 1))
56b6aeb0
HMH		 4484 return -EIO;
4485 } else if (strlencmp(cmd, "dock") == 0) {
4486 if (!acpi_evalf(dock_handle, NULL, "_DCK", "vd", 1))
4487 return -EIO;
4488 } else
4489 return -EINVAL;
1da177e4 4490 }
56b6aeb0
HMH		 4491
4492 return 0;
1da177e4 4493}
56b6aeb0 4494
85998248 4495#endif /* CONFIG_THINKPAD_ACPI_DOCK */
56b6aeb0
HMH		 4496
4497/*************************************************************************
4498 * Bay subdriver
4499 */
1da177e4 4500
85998248 4501#ifdef CONFIG_THINKPAD_ACPI_BAY
f74a27d4 4502
e0c7dfe7 4503TPACPI_HANDLE(bay, root, "\\_SB.PCI.IDE.SECN.MAST", /* 570 */
56b6aeb0
HMH		 4504 "\\_SB.PCI0.IDE0.IDES.IDSM", /* 600e/x, 770e, 770x */
4505 "\\_SB.PCI0.SATA.SCND.MSTR", /* T60, X60, Z60 */
4506 "\\_SB.PCI0.IDE0.SCND.MSTR", /* all others */
4507 ); /* A21e, R30, R31 */
e0c7dfe7 4508TPACPI_HANDLE(bay_ej, bay, "_EJ3", /* 600e/x, A2xm/p, A3x */
56b6aeb0
HMH		 4509 "_EJ0", /* all others */
4510 ); /* 570,A21e,G4x,R30,R31,R32,R40e,R50e */
e0c7dfe7 4511TPACPI_HANDLE(bay2, root, "\\_SB.PCI0.IDE0.PRIM.SLAV", /* A3x, R32 */
56b6aeb0
HMH		 4512 "\\_SB.PCI0.IDE0.IDEP.IDPS", /* 600e/x, 770e, 770x */
4513 ); /* all others */
e0c7dfe7 4514TPACPI_HANDLE(bay2_ej, bay2, "_EJ3", /* 600e/x, 770e, A3x */
56b6aeb0
HMH		 4515 "_EJ0", /* 770x */
4516 ); /* all others */
4517
a5763f22 4518static int __init bay_init(struct ibm_init_struct *iibm)
1da177e4 4519{
fe08bc4b
HMH		 4520 vdbg_printk(TPACPI_DBG_INIT, "initializing bay subdriver\n");
4521
e0c7dfe7 4522 TPACPI_ACPIHANDLE_INIT(bay);
5fba344c 4523 if (bay_handle)
e0c7dfe7
HMH		 4524 TPACPI_ACPIHANDLE_INIT(bay_ej);
4525 TPACPI_ACPIHANDLE_INIT(bay2);
5fba344c 4526 if (bay2_handle)
e0c7dfe7 4527 TPACPI_ACPIHANDLE_INIT(bay2_ej);
5fba344c 4528
d8fd94d9
HMH		 4529 tp_features.bay_status = bay_handle &&
4530 acpi_evalf(bay_handle, NULL, "_STA", "qv");
4531 tp_features.bay_status2 = bay2_handle &&
4532 acpi_evalf(bay2_handle, NULL, "_STA", "qv");
78f81cc4 4533
d8fd94d9
HMH		 4534 tp_features.bay_eject = bay_handle && bay_ej_handle &&
4535 (strlencmp(bay_ej_path, "_EJ0") == 0 || experimental);
4536 tp_features.bay_eject2 = bay2_handle && bay2_ej_handle &&
4537 (strlencmp(bay2_ej_path, "_EJ0") == 0 || experimental);
1da177e4 4538
fe08bc4b
HMH		 4539 vdbg_printk(TPACPI_DBG_INIT,
4540 "bay 1: status %s, eject %s; bay 2: status %s, eject %s\n",
d8fd94d9
HMH		 4541 str_supported(tp_features.bay_status),
4542 str_supported(tp_features.bay_eject),
4543 str_supported(tp_features.bay_status2),
4544 str_supported(tp_features.bay_eject2));
fe08bc4b 4545
d8fd94d9
HMH		 4546 return (tp_features.bay_status || tp_features.bay_eject ||
4547 tp_features.bay_status2 || tp_features.bay_eject2)? 0 : 1;
1da177e4
LT		 4548}
4549
56b6aeb0
HMH		 4550static void bay_notify(struct ibm_struct *ibm, u32 event)
4551{
14e04fb3 4552 acpi_bus_generate_proc_event(ibm->acpi->device, event, 0);
962ce8ca 4553 acpi_bus_generate_netlink_event(ibm->acpi->device->pnp.device_class,
e0b36fc5 4554 dev_name(&ibm->acpi->device->dev),
962ce8ca 4555 event, 0);
56b6aeb0
HMH		 4556}
4557
78f81cc4
BD		 4558#define bay_occupied(b) (_sta(b##_handle) & 1)
4559
4560static int bay_read(char *p)
1da177e4
LT		 4561{
4562 int len = 0;
78f81cc4
BD		 4563 int occupied = bay_occupied(bay);
4564 int occupied2 = bay_occupied(bay2);
4565 int eject, eject2;
4566
d8fd94d9
HMH		 4567 len += sprintf(p + len, "status:\t\t%s\n",
4568 tp_features.bay_status ?
4569 (occupied ? "occupied" : "unoccupied") :
4570 "not supported");
4571 if (tp_features.bay_status2)
78f81cc4
BD		 4572 len += sprintf(p + len, "status2:\t%s\n", occupied2 ?
4573 "occupied" : "unoccupied");
4574
d8fd94d9
HMH		 4575 eject = tp_features.bay_eject && occupied;
4576 eject2 = tp_features.bay_eject2 && occupied2;
78f81cc4
BD		 4577
4578 if (eject && eject2)
4579 len += sprintf(p + len, "commands:\teject, eject2\n");
4580 else if (eject)
1da177e4 4581 len += sprintf(p + len, "commands:\teject\n");
78f81cc4
BD		 4582 else if (eject2)
4583 len += sprintf(p + len, "commands:\teject2\n");
1da177e4
LT		 4584
4585 return len;
4586}
4587
78f81cc4 4588static int bay_write(char *buf)
1da177e4
LT		 4589{
4590 char *cmd;
4591
d8fd94d9 4592 if (!tp_features.bay_eject && !tp_features.bay_eject2)
78f81cc4
BD		 4593 return -ENODEV;
4594
1da177e4 4595 while ((cmd = next_cmd(&buf))) {
d8fd94d9 4596 if (tp_features.bay_eject && strlencmp(cmd, "eject") == 0) {
78f81cc4
BD		 4597 if (!acpi_evalf(bay_ej_handle, NULL, NULL, "vd", 1))
4598 return -EIO;
d8fd94d9 4599 } else if (tp_features.bay_eject2 &&
78f81cc4
BD		 4600 strlencmp(cmd, "eject2") == 0) {
4601 if (!acpi_evalf(bay2_ej_handle, NULL, NULL, "vd", 1))
1da177e4
LT		 4602 return -EIO;
4603 } else
4604 return -EINVAL;
4605 }
4606
4607 return 0;
78f81cc4 4608}
a5763f22 4609
8d376cd6
HMH		 4610static struct tp_acpi_drv_struct ibm_bay_acpidriver = {
4611 .notify = bay_notify,
4612 .handle = &bay_handle,
4613 .type = ACPI_SYSTEM_NOTIFY,
4614};
4615
a5763f22
HMH		 4616static struct ibm_struct bay_driver_data = {
4617 .name = "bay",
4618 .read = bay_read,
4619 .write = bay_write,
8d376cd6 4620 .acpi = &ibm_bay_acpidriver,
a5763f22
HMH		 4621};
4622
85998248 4623#endif /* CONFIG_THINKPAD_ACPI_BAY */
1da177e4 4624
56b6aeb0
HMH		 4625/*************************************************************************
4626 * CMOS subdriver
4627 */
4628
b616004c
HMH		 4629/* sysfs cmos_command -------------------------------------------------- */
4630static ssize_t cmos_command_store(struct device *dev,
4631 struct device_attribute *attr,
4632 const char *buf, size_t count)
4633{
4634 unsigned long cmos_cmd;
4635 int res;
4636
4637 if (parse_strtoul(buf, 21, &cmos_cmd))
4638 return -EINVAL;
4639
4640 res = issue_thinkpad_cmos_command(cmos_cmd);
4641 return (res)? res : count;
4642}
4643
4644static struct device_attribute dev_attr_cmos_command =
4645 __ATTR(cmos_command, S_IWUSR, NULL, cmos_command_store);
4646
4647/* --------------------------------------------------------------------- */
4648
a5763f22 4649static int __init cmos_init(struct ibm_init_struct *iibm)
5fba344c 4650{
b616004c
HMH		 4651 int res;
4652
fe08bc4b
HMH		 4653 vdbg_printk(TPACPI_DBG_INIT,
4654 "initializing cmos commands subdriver\n");
4655
e0c7dfe7 4656 TPACPI_ACPIHANDLE_INIT(cmos);
5fba344c 4657
fe08bc4b
HMH		 4658 vdbg_printk(TPACPI_DBG_INIT, "cmos commands are %s\n",
4659 str_supported(cmos_handle != NULL));
b616004c
HMH		 4660
4661 res = device_create_file(&tpacpi_pdev->dev, &dev_attr_cmos_command);
4662 if (res)
4663 return res;
4664
5fba344c
HMH		 4665 return (cmos_handle)? 0 : 1;
4666}
4667
b616004c
HMH		 4668static void cmos_exit(void)
4669{
4670 device_remove_file(&tpacpi_pdev->dev, &dev_attr_cmos_command);
4671}
4672
78f81cc4 4673static int cmos_read(char *p)
1da177e4
LT		 4674{
4675 int len = 0;
4676
78f81cc4
BD		 4677 /* cmos not supported on 570, 600e/x, 770e, 770x, A21e, A2xm/p,
4678 R30, R31, T20-22, X20-21 */
1da177e4
LT		 4679 if (!cmos_handle)
4680 len += sprintf(p + len, "status:\t\tnot supported\n");
4681 else {
4682 len += sprintf(p + len, "status:\t\tsupported\n");
78f81cc4 4683 len += sprintf(p + len, "commands:\t<cmd> (<cmd> is 0-21)\n");
1da177e4
LT		 4684 }
4685
4686 return len;
4687}
4688
78f81cc4 4689static int cmos_write(char *buf)
1da177e4
LT		 4690{
4691 char *cmd;
c9bea99c 4692 int cmos_cmd, res;
1da177e4
LT		 4693
4694 while ((cmd = next_cmd(&buf))) {
78f81cc4
BD		 4695 if (sscanf(cmd, "%u", &cmos_cmd) == 1 &&
4696 cmos_cmd >= 0 && cmos_cmd <= 21) {
1da177e4
LT		 4697 /* cmos_cmd set */
4698 } else
4699 return -EINVAL;
4700
c9bea99c
HMH		 4701 res = issue_thinkpad_cmos_command(cmos_cmd);
4702 if (res)
4703 return res;
1da177e4
LT		 4704 }
4705
4706 return 0;
78f81cc4
BD		 4707}
4708
a5763f22
HMH		 4709static struct ibm_struct cmos_driver_data = {
4710 .name = "cmos",
4711 .read = cmos_read,
4712 .write = cmos_write,
b616004c 4713 .exit = cmos_exit,
a5763f22 4714};
56b6aeb0
HMH		 4715
4716/*************************************************************************
4717 * LED subdriver
4718 */
4719
f74a27d4
HMH		 4720enum led_access_mode {
4721 TPACPI_LED_NONE = 0,
4722 TPACPI_LED_570, /* 570 */
4723 TPACPI_LED_OLD, /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20-21 */
4724 TPACPI_LED_NEW, /* all others */
4725};
4726
4727enum { /* For TPACPI_LED_OLD */
4728 TPACPI_LED_EC_HLCL = 0x0c, /* EC reg to get led to power on */
4729 TPACPI_LED_EC_HLBL = 0x0d, /* EC reg to blink a lit led */
4730 TPACPI_LED_EC_HLMS = 0x0e, /* EC reg to select led to command */
4731};
4732
4fa6811b
HMH		 4733enum led_status_t {
4734 TPACPI_LED_OFF = 0,
4735 TPACPI_LED_ON,
4736 TPACPI_LED_BLINK,
4737};
4738
9a8e1738 4739static enum led_access_mode led_supported;
78f81cc4 4740
e0c7dfe7 4741TPACPI_HANDLE(led, ec, "SLED", /* 570 */
35ff8b9f
HMH		 4742 "SYSL", /* 600e/x, 770e, 770x, A21e, A2xm/p, */
4743 /* T20-22, X20-21 */
56b6aeb0
HMH		 4744 "LED", /* all others */
4745 ); /* R30, R31 */
4746
af116101
HMH		 4747#define TPACPI_LED_NUMLEDS 8
4748static struct tpacpi_led_classdev *tpacpi_leds;
4749static enum led_status_t tpacpi_led_state_cache[TPACPI_LED_NUMLEDS];
e3aa51fe 4750static const char * const tpacpi_led_names[TPACPI_LED_NUMLEDS] = {
af116101
HMH		 4751 /* there's a limit of 19 chars + NULL before 2.6.26 */
4752 "tpacpi::power",
4753 "tpacpi:orange:batt",
4754 "tpacpi:green:batt",
4755 "tpacpi::dock_active",
4756 "tpacpi::bay_active",
4757 "tpacpi::dock_batt",
4758 "tpacpi::unknown_led",
4759 "tpacpi::standby",
4760};
a4d5effc
HMH		 4761#define TPACPI_SAFE_LEDS 0x0081U
4762
4763static inline bool tpacpi_is_led_restricted(const unsigned int led)
4764{
4765#ifdef CONFIG_THINKPAD_ACPI_UNSAFE_LEDS
4766 return false;
4767#else
4768 return (TPACPI_SAFE_LEDS & (1 << led)) == 0;
4769#endif
4770}
af116101 4771
24e45bbe 4772static int led_get_status(const unsigned int led)
4fa6811b
HMH		 4773{
4774 int status;
af116101 4775 enum led_status_t led_s;
4fa6811b
HMH		 4776
4777 switch (led_supported) {
4778 case TPACPI_LED_570:
4779 if (!acpi_evalf(ec_handle,
4780 &status, "GLED", "dd", 1 << led))
4781 return -EIO;
af116101 4782 led_s = (status == 0)?
4fa6811b
HMH		 4783 TPACPI_LED_OFF :
4784 ((status == 1)?
4785 TPACPI_LED_ON :
4786 TPACPI_LED_BLINK);
af116101
HMH		 4787 tpacpi_led_state_cache[led] = led_s;
4788 return led_s;
4fa6811b
HMH		 4789 default:
4790 return -ENXIO;
4791 }
4792
4793 /* not reached */
4794}
4795
24e45bbe
HMH		 4796static int led_set_status(const unsigned int led,
4797 const enum led_status_t ledstatus)
4fa6811b
HMH		 4798{
4799 /* off, on, blink. Index is led_status_t */
24e45bbe
HMH		 4800 static const unsigned int led_sled_arg1[] = { 0, 1, 3 };
4801 static const unsigned int led_led_arg1[] = { 0, 0x80, 0xc0 };
4fa6811b
HMH		 4802
4803 int rc = 0;
4804
4805 switch (led_supported) {
4806 case TPACPI_LED_570:
24e45bbe 4807 /* 570 */
a4d5effc 4808 if (unlikely(led > 7))
24e45bbe 4809 return -EINVAL;
a4d5effc
HMH		 4810 if (unlikely(tpacpi_is_led_restricted(led)))
4811 return -EPERM;
24e45bbe
HMH		 4812 if (!acpi_evalf(led_handle, NULL, NULL, "vdd",
4813 (1 << led), led_sled_arg1[ledstatus]))
4814 rc = -EIO;
4815 break;
4fa6811b 4816 case TPACPI_LED_OLD:
24e45bbe 4817 /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20 */
a4d5effc 4818 if (unlikely(led > 7))
24e45bbe 4819 return -EINVAL;
a4d5effc
HMH		 4820 if (unlikely(tpacpi_is_led_restricted(led)))
4821 return -EPERM;
24e45bbe
HMH		 4822 rc = ec_write(TPACPI_LED_EC_HLMS, (1 << led));
4823 if (rc >= 0)
4824 rc = ec_write(TPACPI_LED_EC_HLBL,
4825 (ledstatus == TPACPI_LED_BLINK) << led);
4826 if (rc >= 0)
4827 rc = ec_write(TPACPI_LED_EC_HLCL,
4828 (ledstatus != TPACPI_LED_OFF) << led);
4829 break;
4fa6811b 4830 case TPACPI_LED_NEW:
24e45bbe 4831 /* all others */
a4d5effc
HMH		 4832 if (unlikely(led >= TPACPI_LED_NUMLEDS))
4833 return -EINVAL;
4834 if (unlikely(tpacpi_is_led_restricted(led)))
4835 return -EPERM;
24e45bbe
HMH		 4836 if (!acpi_evalf(led_handle, NULL, NULL, "vdd",
4837 led, led_led_arg1[ledstatus]))
4838 rc = -EIO;
4839 break;
4fa6811b
HMH		 4840 default:
4841 rc = -ENXIO;
4842 }
4843
af116101
HMH		 4844 if (!rc)
4845 tpacpi_led_state_cache[led] = ledstatus;
4846
4847 return rc;
4848}
4849
4850static void led_sysfs_set_status(unsigned int led,
4851 enum led_brightness brightness)
4852{
4853 led_set_status(led,
4854 (brightness == LED_OFF) ?
4855 TPACPI_LED_OFF :
4856 (tpacpi_led_state_cache[led] == TPACPI_LED_BLINK) ?
4857 TPACPI_LED_BLINK : TPACPI_LED_ON);
4858}
4859
4860static void led_set_status_worker(struct work_struct *work)
4861{
4862 struct tpacpi_led_classdev *data =
4863 container_of(work, struct tpacpi_led_classdev, work);
4864
4865 if (likely(tpacpi_lifecycle == TPACPI_LIFE_RUNNING))
4866 led_sysfs_set_status(data->led, data->new_brightness);
4867}
4868
4869static void led_sysfs_set(struct led_classdev *led_cdev,
4870 enum led_brightness brightness)
4871{
4872 struct tpacpi_led_classdev *data = container_of(led_cdev,
4873 struct tpacpi_led_classdev, led_classdev);
4874
4875 data->new_brightness = brightness;
e0e3c061 4876 queue_work(tpacpi_wq, &data->work);
af116101
HMH		 4877}
4878
4879static int led_sysfs_blink_set(struct led_classdev *led_cdev,
4880 unsigned long *delay_on, unsigned long *delay_off)
4881{
4882 struct tpacpi_led_classdev *data = container_of(led_cdev,
4883 struct tpacpi_led_classdev, led_classdev);
4884
4885 /* Can we choose the flash rate? */
4886 if (*delay_on == 0 && *delay_off == 0) {
4887 /* yes. set them to the hardware blink rate (1 Hz) */
4888 *delay_on = 500; /* ms */
4889 *delay_off = 500; /* ms */
4890 } else if ((*delay_on != 500) || (*delay_off != 500))
4891 return -EINVAL;
4892
4893 data->new_brightness = TPACPI_LED_BLINK;
e0e3c061 4894 queue_work(tpacpi_wq, &data->work);
af116101
HMH		 4895
4896 return 0;
4897}
4898
4899static enum led_brightness led_sysfs_get(struct led_classdev *led_cdev)
4900{
4901 int rc;
4902
4903 struct tpacpi_led_classdev *data = container_of(led_cdev,
4904 struct tpacpi_led_classdev, led_classdev);
4905
4906 rc = led_get_status(data->led);
4907
4908 if (rc == TPACPI_LED_OFF || rc < 0)
4909 rc = LED_OFF; /* no error handling in led class :( */
4910 else
4911 rc = LED_FULL;
4912
4fa6811b
HMH		 4913 return rc;
4914}
4915
af116101
HMH		 4916static void led_exit(void)
4917{
4918 unsigned int i;
4919
4920 for (i = 0; i < TPACPI_LED_NUMLEDS; i++) {
4921 if (tpacpi_leds[i].led_classdev.name)
4922 led_classdev_unregister(&tpacpi_leds[i].led_classdev);
4923 }
4924
4925 kfree(tpacpi_leds);
af116101
HMH		 4926}
4927
a4d5effc
HMH		 4928static int __init tpacpi_init_led(unsigned int led)
4929{
4930 int rc;
4931
4932 tpacpi_leds[led].led = led;
4933
4934 tpacpi_leds[led].led_classdev.brightness_set = &led_sysfs_set;
4935 tpacpi_leds[led].led_classdev.blink_set = &led_sysfs_blink_set;
4936 if (led_supported == TPACPI_LED_570)
4937 tpacpi_leds[led].led_classdev.brightness_get =
4938 &led_sysfs_get;
4939
4940 tpacpi_leds[led].led_classdev.name = tpacpi_led_names[led];
4941
4942 INIT_WORK(&tpacpi_leds[led].work, led_set_status_worker);
4943
4944 rc = led_classdev_register(&tpacpi_pdev->dev,
4945 &tpacpi_leds[led].led_classdev);
4946 if (rc < 0)
4947 tpacpi_leds[led].led_classdev.name = NULL;
4948
4949 return rc;
4950}
4951
a5763f22 4952static int __init led_init(struct ibm_init_struct *iibm)
78f81cc4 4953{
af116101
HMH		 4954 unsigned int i;
4955 int rc;
4956
fe08bc4b
HMH		 4957 vdbg_printk(TPACPI_DBG_INIT, "initializing LED subdriver\n");
4958
e0c7dfe7 4959 TPACPI_ACPIHANDLE_INIT(led);
5fba344c 4960
78f81cc4
BD		 4961 if (!led_handle)
4962 /* led not supported on R30, R31 */
efa27145 4963 led_supported = TPACPI_LED_NONE;
78f81cc4
BD		 4964 else if (strlencmp(led_path, "SLED") == 0)
4965 /* 570 */
efa27145 4966 led_supported = TPACPI_LED_570;
78f81cc4
BD		 4967 else if (strlencmp(led_path, "SYSL") == 0)
4968 /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20-21 */
efa27145 4969 led_supported = TPACPI_LED_OLD;
78f81cc4
BD		 4970 else
4971 /* all others */
efa27145 4972 led_supported = TPACPI_LED_NEW;
78f81cc4 4973
fe08bc4b
HMH		 4974 vdbg_printk(TPACPI_DBG_INIT, "LED commands are %s, mode %d\n",
4975 str_supported(led_supported), led_supported);
4976
af116101
HMH		 4977 tpacpi_leds = kzalloc(sizeof(*tpacpi_leds) * TPACPI_LED_NUMLEDS,
4978 GFP_KERNEL);
4979 if (!tpacpi_leds) {
4980 printk(TPACPI_ERR "Out of memory for LED data\n");
4981 return -ENOMEM;
4982 }
4983
4984 for (i = 0; i < TPACPI_LED_NUMLEDS; i++) {
a4d5effc
HMH		 4985 if (!tpacpi_is_led_restricted(i)) {
4986 rc = tpacpi_init_led(i);
4987 if (rc < 0) {
4988 led_exit();
4989 return rc;
4990 }
af116101
HMH		 4991 }
4992 }
4993
a4d5effc
HMH		 4994#ifdef CONFIG_THINKPAD_ACPI_UNSAFE_LEDS
4995 if (led_supported != TPACPI_LED_NONE)
4996 printk(TPACPI_NOTICE
4997 "warning: userspace override of important "
4998 "firmware LEDs is enabled\n");
4999#endif
5fba344c 5000 return (led_supported != TPACPI_LED_NONE)? 0 : 1;
78f81cc4
BD		 5001}
5002
4fa6811b
HMH		 5003#define str_led_status(s) \
5004 ((s) == TPACPI_LED_OFF ? "off" : \
5005 ((s) == TPACPI_LED_ON ? "on" : "blinking"))
78f81cc4
BD		 5006
5007static int led_read(char *p)
1da177e4
LT		 5008{
5009 int len = 0;
5010
78f81cc4
BD		 5011 if (!led_supported) {
5012 len += sprintf(p + len, "status:\t\tnot supported\n");
5013 return len;
5014 }
5015 len += sprintf(p + len, "status:\t\tsupported\n");
5016
efa27145 5017 if (led_supported == TPACPI_LED_570) {
78f81cc4
BD		 5018 /* 570 */
5019 int i, status;
5020 for (i = 0; i < 8; i++) {
4fa6811b
HMH		 5021 status = led_get_status(i);
5022 if (status < 0)
78f81cc4
BD		 5023 return -EIO;
5024 len += sprintf(p + len, "%d:\t\t%s\n",
4fa6811b 5025 i, str_led_status(status));
78f81cc4
BD		 5026 }
5027 }
5028
1da177e4 5029 len += sprintf(p + len, "commands:\t"
78f81cc4 5030 "<led> on, <led> off, <led> blink (<led> is 0-7)\n");
1da177e4
LT		 5031
5032 return len;
5033}
5034
78f81cc4 5035static int led_write(char *buf)
1da177e4
LT		 5036{
5037 char *cmd;
4fa6811b
HMH		 5038 int led, rc;
5039 enum led_status_t s;
78f81cc4
BD		 5040
5041 if (!led_supported)
5042 return -ENODEV;
1da177e4
LT		 5043
5044 while ((cmd = next_cmd(&buf))) {
78f81cc4 5045 if (sscanf(cmd, "%d", &led) != 1 || led < 0 || led > 7)
1da177e4
LT		 5046 return -EINVAL;
5047
78f81cc4 5048 if (strstr(cmd, "off")) {
4fa6811b 5049 s = TPACPI_LED_OFF;
1da177e4 5050 } else if (strstr(cmd, "on")) {
4fa6811b 5051 s = TPACPI_LED_ON;
78f81cc4 5052 } else if (strstr(cmd, "blink")) {
4fa6811b 5053 s = TPACPI_LED_BLINK;
78f81cc4 5054 } else {
4fa6811b 5055 return -EINVAL;
78f81cc4 5056 }
4fa6811b
HMH		 5057
5058 rc = led_set_status(led, s);
5059 if (rc < 0)
5060 return rc;
78f81cc4
BD		 5061 }
5062
5063 return 0;
5064}
5065
a5763f22
HMH		 5066static struct ibm_struct led_driver_data = {
5067 .name = "led",
5068 .read = led_read,
5069 .write = led_write,
af116101 5070 .exit = led_exit,
a5763f22
HMH		 5071};
5072
56b6aeb0
HMH		 5073/*************************************************************************
5074 * Beep subdriver
5075 */
5076
e0c7dfe7 5077TPACPI_HANDLE(beep, ec, "BEEP"); /* all except R30, R31 */
56b6aeb0 5078
a5763f22 5079static int __init beep_init(struct ibm_init_struct *iibm)
5fba344c 5080{
fe08bc4b
HMH		 5081 vdbg_printk(TPACPI_DBG_INIT, "initializing beep subdriver\n");
5082
e0c7dfe7 5083 TPACPI_ACPIHANDLE_INIT(beep);
5fba344c 5084
fe08bc4b
HMH		 5085 vdbg_printk(TPACPI_DBG_INIT, "beep is %s\n",
5086 str_supported(beep_handle != NULL));
5087
5fba344c
HMH		 5088 return (beep_handle)? 0 : 1;
5089}
5090
78f81cc4
BD		 5091static int beep_read(char *p)
5092{
5093 int len = 0;
5094
5095 if (!beep_handle)
5096 len += sprintf(p + len, "status:\t\tnot supported\n");
5097 else {
5098 len += sprintf(p + len, "status:\t\tsupported\n");
5099 len += sprintf(p + len, "commands:\t<cmd> (<cmd> is 0-17)\n");
5100 }
5101
5102 return len;
5103}
5104
5105static int beep_write(char *buf)
5106{
5107 char *cmd;
5108 int beep_cmd;
5109
5110 if (!beep_handle)
5111 return -ENODEV;
5112
5113 while ((cmd = next_cmd(&buf))) {
5114 if (sscanf(cmd, "%u", &beep_cmd) == 1 &&
5115 beep_cmd >= 0 && beep_cmd <= 17) {
5116 /* beep_cmd set */
5117 } else
5118 return -EINVAL;
5119 if (!acpi_evalf(beep_handle, NULL, NULL, "vdd", beep_cmd, 0))
5120 return -EIO;
5121 }
5122
5123 return 0;
5124}
5125
a5763f22
HMH		 5126static struct ibm_struct beep_driver_data = {
5127 .name = "beep",
5128 .read = beep_read,
5129 .write = beep_write,
5130};
5131
56b6aeb0
HMH		 5132/*************************************************************************
5133 * Thermal subdriver
5134 */
78f81cc4 5135
f74a27d4
HMH		 5136enum thermal_access_mode {
5137 TPACPI_THERMAL_NONE = 0, /* No thermal support */
5138 TPACPI_THERMAL_ACPI_TMP07, /* Use ACPI TMP0-7 */
5139 TPACPI_THERMAL_ACPI_UPDT, /* Use ACPI TMP0-7 with UPDT */
5140 TPACPI_THERMAL_TPEC_8, /* Use ACPI EC regs, 8 sensors */
5141 TPACPI_THERMAL_TPEC_16, /* Use ACPI EC regs, 16 sensors */
5142};
5143
5144enum { /* TPACPI_THERMAL_TPEC_* */
5145 TP_EC_THERMAL_TMP0 = 0x78, /* ACPI EC regs TMP 0..7 */
5146 TP_EC_THERMAL_TMP8 = 0xC0, /* ACPI EC regs TMP 8..15 */
5147 TP_EC_THERMAL_TMP_NA = -128, /* ACPI EC sensor not available */
5148};
5149
5150#define TPACPI_MAX_THERMAL_SENSORS 16 /* Max thermal sensors supported */
5151struct ibm_thermal_sensors_struct {
5152 s32 temp[TPACPI_MAX_THERMAL_SENSORS];
5153};
5154
a26f878a 5155static enum thermal_access_mode thermal_read_mode;
78f81cc4 5156
b21a15f6
HMH		 5157/* idx is zero-based */
5158static int thermal_get_sensor(int idx, s32 *value)
5159{
5160 int t;
5161 s8 tmp;
5162 char tmpi[5];
5163
5164 t = TP_EC_THERMAL_TMP0;
5165
5166 switch (thermal_read_mode) {
5167#if TPACPI_MAX_THERMAL_SENSORS >= 16
5168 case TPACPI_THERMAL_TPEC_16:
5169 if (idx >= 8 && idx <= 15) {
5170 t = TP_EC_THERMAL_TMP8;
5171 idx -= 8;
5172 }
5173 /* fallthrough */
5174#endif
5175 case TPACPI_THERMAL_TPEC_8:
5176 if (idx <= 7) {
5177 if (!acpi_ec_read(t + idx, &tmp))
5178 return -EIO;
5179 *value = tmp * 1000;
5180 return 0;
5181 }
5182 break;
5183
5184 case TPACPI_THERMAL_ACPI_UPDT:
5185 if (idx <= 7) {
5186 snprintf(tmpi, sizeof(tmpi), "TMP%c", '0' + idx);
5187 if (!acpi_evalf(ec_handle, NULL, "UPDT", "v"))
5188 return -EIO;
5189 if (!acpi_evalf(ec_handle, &t, tmpi, "d"))
5190 return -EIO;
5191 *value = (t - 2732) * 100;
5192 return 0;
5193 }
5194 break;
5195
5196 case TPACPI_THERMAL_ACPI_TMP07:
5197 if (idx <= 7) {
5198 snprintf(tmpi, sizeof(tmpi), "TMP%c", '0' + idx);
5199 if (!acpi_evalf(ec_handle, &t, tmpi, "d"))
5200 return -EIO;
5201 if (t > 127 || t < -127)
5202 t = TP_EC_THERMAL_TMP_NA;
5203 *value = t * 1000;
5204 return 0;
5205 }
5206 break;
5207
5208 case TPACPI_THERMAL_NONE:
5209 default:
5210 return -ENOSYS;
5211 }
5212
5213 return -EINVAL;
5214}
5215
5216static int thermal_get_sensors(struct ibm_thermal_sensors_struct *s)
5217{
5218 int res, i;
5219 int n;
5220
5221 n = 8;
5222 i = 0;
5223
5224 if (!s)
5225 return -EINVAL;
5226
5227 if (thermal_read_mode == TPACPI_THERMAL_TPEC_16)
5228 n = 16;
5229
35ff8b9f 5230 for (i = 0 ; i < n; i++) {
b21a15f6
HMH		 5231 res = thermal_get_sensor(i, &s->temp[i]);
5232 if (res)
5233 return res;
5234 }
5235
5236 return n;
5237}
f74a27d4 5238
2c37aa4e
HMH		 5239/* sysfs temp##_input -------------------------------------------------- */
5240
5241static ssize_t thermal_temp_input_show(struct device *dev,
5242 struct device_attribute *attr,
5243 char *buf)
5244{
5245 struct sensor_device_attribute *sensor_attr =
5246 to_sensor_dev_attr(attr);
5247 int idx = sensor_attr->index;
5248 s32 value;
5249 int res;
5250
5251 res = thermal_get_sensor(idx, &value);
5252 if (res)
5253 return res;
5254 if (value == TP_EC_THERMAL_TMP_NA * 1000)
5255 return -ENXIO;
5256
5257 return snprintf(buf, PAGE_SIZE, "%d\n", value);
5258}
5259
5260#define THERMAL_SENSOR_ATTR_TEMP(_idxA, _idxB) \
35ff8b9f
HMH		 5261 SENSOR_ATTR(temp##_idxA##_input, S_IRUGO, \
5262 thermal_temp_input_show, NULL, _idxB)
2c37aa4e
HMH		 5263
5264static struct sensor_device_attribute sensor_dev_attr_thermal_temp_input[] = {
5265 THERMAL_SENSOR_ATTR_TEMP(1, 0),
5266 THERMAL_SENSOR_ATTR_TEMP(2, 1),
5267 THERMAL_SENSOR_ATTR_TEMP(3, 2),
5268 THERMAL_SENSOR_ATTR_TEMP(4, 3),
5269 THERMAL_SENSOR_ATTR_TEMP(5, 4),
5270 THERMAL_SENSOR_ATTR_TEMP(6, 5),
5271 THERMAL_SENSOR_ATTR_TEMP(7, 6),
5272 THERMAL_SENSOR_ATTR_TEMP(8, 7),
5273 THERMAL_SENSOR_ATTR_TEMP(9, 8),
5274 THERMAL_SENSOR_ATTR_TEMP(10, 9),
5275 THERMAL_SENSOR_ATTR_TEMP(11, 10),
5276 THERMAL_SENSOR_ATTR_TEMP(12, 11),
5277 THERMAL_SENSOR_ATTR_TEMP(13, 12),
5278 THERMAL_SENSOR_ATTR_TEMP(14, 13),
5279 THERMAL_SENSOR_ATTR_TEMP(15, 14),
5280 THERMAL_SENSOR_ATTR_TEMP(16, 15),
5281};
5282
5283#define THERMAL_ATTRS(X) \
5284 &sensor_dev_attr_thermal_temp_input[X].dev_attr.attr
5285
5286static struct attribute *thermal_temp_input_attr[] = {
5287 THERMAL_ATTRS(8),
5288 THERMAL_ATTRS(9),
5289 THERMAL_ATTRS(10),
5290 THERMAL_ATTRS(11),
5291 THERMAL_ATTRS(12),
5292 THERMAL_ATTRS(13),
5293 THERMAL_ATTRS(14),
5294 THERMAL_ATTRS(15),
5295 THERMAL_ATTRS(0),
5296 THERMAL_ATTRS(1),
5297 THERMAL_ATTRS(2),
5298 THERMAL_ATTRS(3),
5299 THERMAL_ATTRS(4),
5300 THERMAL_ATTRS(5),
5301 THERMAL_ATTRS(6),
5302 THERMAL_ATTRS(7),
5303 NULL
5304};
5305
5306static const struct attribute_group thermal_temp_input16_group = {
5307 .attrs = thermal_temp_input_attr
5308};
5309
5310static const struct attribute_group thermal_temp_input8_group = {
5311 .attrs = &thermal_temp_input_attr[8]
5312};
5313
5314#undef THERMAL_SENSOR_ATTR_TEMP
5315#undef THERMAL_ATTRS
5316
5317/* --------------------------------------------------------------------- */
5318
a5763f22 5319static int __init thermal_init(struct ibm_init_struct *iibm)
78f81cc4 5320{
60eb0b35
HMH		 5321 u8 t, ta1, ta2;
5322 int i;
5fba344c 5323 int acpi_tmp7;
2c37aa4e 5324 int res;
5fba344c 5325
fe08bc4b
HMH		 5326 vdbg_printk(TPACPI_DBG_INIT, "initializing thermal subdriver\n");
5327
5fba344c 5328 acpi_tmp7 = acpi_evalf(ec_handle, NULL, "TMP7", "qv");
60eb0b35 5329
3d6f99ca 5330 if (thinkpad_id.ec_model) {
60eb0b35
HMH		 5331 /*
5332 * Direct EC access mode: sensors at registers
5333 * 0x78-0x7F, 0xC0-0xC7. Registers return 0x00 for
5334 * non-implemented, thermal sensors return 0x80 when
5335 * not available
5336 */
78f81cc4 5337
60eb0b35
HMH		 5338 ta1 = ta2 = 0;
5339 for (i = 0; i < 8; i++) {
04cc862c 5340 if (acpi_ec_read(TP_EC_THERMAL_TMP0 + i, &t)) {
60eb0b35
HMH		 5341 ta1 |= t;
5342 } else {
5343 ta1 = 0;
5344 break;
5345 }
04cc862c 5346 if (acpi_ec_read(TP_EC_THERMAL_TMP8 + i, &t)) {
60eb0b35
HMH		 5347 ta2 |= t;
5348 } else {
5349 ta1 = 0;
5350 break;
5351 }
5352 }
5353 if (ta1 == 0) {
5354 /* This is sheer paranoia, but we handle it anyway */
5355 if (acpi_tmp7) {
e0c7dfe7 5356 printk(TPACPI_ERR
60eb0b35 5357 "ThinkPad ACPI EC access misbehaving, "
35ff8b9f
HMH		 5358 "falling back to ACPI TMPx access "
5359 "mode\n");
efa27145 5360 thermal_read_mode = TPACPI_THERMAL_ACPI_TMP07;
60eb0b35 5361 } else {
e0c7dfe7 5362 printk(TPACPI_ERR
60eb0b35
HMH		 5363 "ThinkPad ACPI EC access misbehaving, "
5364 "disabling thermal sensors access\n");
efa27145 5365 thermal_read_mode = TPACPI_THERMAL_NONE;
60eb0b35
HMH		 5366 }
5367 } else {
5368 thermal_read_mode =
5369 (ta2 != 0) ?
efa27145 5370 TPACPI_THERMAL_TPEC_16 : TPACPI_THERMAL_TPEC_8;
60eb0b35
HMH		 5371 }
5372 } else if (acpi_tmp7) {
a26f878a
HMH		 5373 if (acpi_evalf(ec_handle, NULL, "UPDT", "qv")) {
5374 /* 600e/x, 770e, 770x */
efa27145 5375 thermal_read_mode = TPACPI_THERMAL_ACPI_UPDT;
a26f878a
HMH		 5376 } else {
5377 /* Standard ACPI TMPx access, max 8 sensors */
efa27145 5378 thermal_read_mode = TPACPI_THERMAL_ACPI_TMP07;
a26f878a
HMH		 5379 }
5380 } else {
5381 /* temperatures not supported on 570, G4x, R30, R31, R32 */
efa27145 5382 thermal_read_mode = TPACPI_THERMAL_NONE;
a26f878a 5383 }
78f81cc4 5384
fe08bc4b
HMH		 5385 vdbg_printk(TPACPI_DBG_INIT, "thermal is %s, mode %d\n",
5386 str_supported(thermal_read_mode != TPACPI_THERMAL_NONE),
5387 thermal_read_mode);
5388
35ff8b9f 5389 switch (thermal_read_mode) {
2c37aa4e 5390 case TPACPI_THERMAL_TPEC_16:
7fd40029 5391 res = sysfs_create_group(&tpacpi_sensors_pdev->dev.kobj,
2c37aa4e
HMH		 5392 &thermal_temp_input16_group);
5393 if (res)
5394 return res;
5395 break;
5396 case TPACPI_THERMAL_TPEC_8:
5397 case TPACPI_THERMAL_ACPI_TMP07:
5398 case TPACPI_THERMAL_ACPI_UPDT:
7fd40029 5399 res = sysfs_create_group(&tpacpi_sensors_pdev->dev.kobj,
2c37aa4e
HMH		 5400 &thermal_temp_input8_group);
5401 if (res)
5402 return res;
5403 break;
5404 case TPACPI_THERMAL_NONE:
5405 default:
5406 return 1;
5407 }
5408
5409 return 0;
5410}
5411
5412static void thermal_exit(void)
5413{
35ff8b9f 5414 switch (thermal_read_mode) {
2c37aa4e 5415 case TPACPI_THERMAL_TPEC_16:
7fd40029 5416 sysfs_remove_group(&tpacpi_sensors_pdev->dev.kobj,
2c37aa4e
HMH		 5417 &thermal_temp_input16_group);
5418 break;
5419 case TPACPI_THERMAL_TPEC_8:
5420 case TPACPI_THERMAL_ACPI_TMP07:
5421 case TPACPI_THERMAL_ACPI_UPDT:
7fd40029 5422 sysfs_remove_group(&tpacpi_sensors_pdev->dev.kobj,
2c37aa4e
HMH		 5423 &thermal_temp_input16_group);
5424 break;
5425 case TPACPI_THERMAL_NONE:
5426 default:
5427 break;
5428 }
78f81cc4
BD		 5429}
5430
a26f878a
HMH		 5431static int thermal_read(char *p)
5432{
5433 int len = 0;
5434 int n, i;
5435 struct ibm_thermal_sensors_struct t;
5436
5437 n = thermal_get_sensors(&t);
5438 if (unlikely(n < 0))
5439 return n;
5440
5441 len += sprintf(p + len, "temperatures:\t");
5442
5443 if (n > 0) {
5444 for (i = 0; i < (n - 1); i++)
5445 len += sprintf(p + len, "%d ", t.temp[i] / 1000);
5446 len += sprintf(p + len, "%d\n", t.temp[i] / 1000);
5447 } else
5448 len += sprintf(p + len, "not supported\n");
78f81cc4
BD		 5449
5450 return len;
5451}
5452
a5763f22
HMH		 5453static struct ibm_struct thermal_driver_data = {
5454 .name = "thermal",
5455 .read = thermal_read,
2c37aa4e 5456 .exit = thermal_exit,
a5763f22
HMH		 5457};
5458
56b6aeb0
HMH		 5459/*************************************************************************
5460 * EC Dump subdriver
5461 */
5462
78f81cc4
BD		 5463static u8 ecdump_regs[256];
5464
5465static int ecdump_read(char *p)
5466{
5467 int len = 0;
5468 int i, j;
5469 u8 v;
5470
5471 len += sprintf(p + len, "EC "
5472 " +00 +01 +02 +03 +04 +05 +06 +07"
5473 " +08 +09 +0a +0b +0c +0d +0e +0f\n");
5474 for (i = 0; i < 256; i += 16) {
5475 len += sprintf(p + len, "EC 0x%02x:", i);
5476 for (j = 0; j < 16; j++) {
5477 if (!acpi_ec_read(i + j, &v))
5478 break;
5479 if (v != ecdump_regs[i + j])
5480 len += sprintf(p + len, " *%02x", v);
5481 else
5482 len += sprintf(p + len, " %02x", v);
5483 ecdump_regs[i + j] = v;
5484 }
5485 len += sprintf(p + len, "\n");
5486 if (j != 16)
5487 break;
5488 }
5489
5490 /* These are way too dangerous to advertise openly... */
5491#if 0
5492 len += sprintf(p + len, "commands:\t0x<offset> 0x<value>"
5493 " (<offset> is 00-ff, <value> is 00-ff)\n");
5494 len += sprintf(p + len, "commands:\t0x<offset> <value> "
5495 " (<offset> is 00-ff, <value> is 0-255)\n");
5496#endif
5497 return len;
5498}
5499
5500static int ecdump_write(char *buf)
5501{
5502 char *cmd;
5503 int i, v;
5504
5505 while ((cmd = next_cmd(&buf))) {
5506 if (sscanf(cmd, "0x%x 0x%x", &i, &v) == 2) {
5507 /* i and v set */
5508 } else if (sscanf(cmd, "0x%x %u", &i, &v) == 2) {
5509 /* i and v set */
5510 } else
5511 return -EINVAL;
5512 if (i >= 0 && i < 256 && v >= 0 && v < 256) {
5513 if (!acpi_ec_write(i, v))
1da177e4
LT		 5514 return -EIO;
5515 } else
5516 return -EINVAL;
5517 }
5518
5519 return 0;
78f81cc4
BD		 5520}
5521
a5763f22
HMH		 5522static struct ibm_struct ecdump_driver_data = {
5523 .name = "ecdump",
5524 .read = ecdump_read,
5525 .write = ecdump_write,
92641177 5526 .flags.experimental = 1,
a5763f22
HMH		 5527};
5528
56b6aeb0
HMH		 5529/*************************************************************************
5530 * Backlight/brightness subdriver
5531 */
5532
f74a27d4
HMH		 5533#define TPACPI_BACKLIGHT_DEV_NAME "thinkpad_screen"
5534
0e501834
HMH		 5535/*
5536 * ThinkPads can read brightness from two places: EC HBRV (0x31), or
5537 * CMOS NVRAM byte 0x5E, bits 0-3.
5538 *
5539 * EC HBRV (0x31) has the following layout
5540 * Bit 7: unknown function
5541 * Bit 6: unknown function
5542 * Bit 5: Z: honour scale changes, NZ: ignore scale changes
5543 * Bit 4: must be set to zero to avoid problems
5544 * Bit 3-0: backlight brightness level
5545 *
5546 * brightness_get_raw returns status data in the HBRV layout
5547 */
5548
e11aecf1
HMH		 5549enum {
5550 TP_EC_BACKLIGHT = 0x31,
5551
5552 /* TP_EC_BACKLIGHT bitmasks */
5553 TP_EC_BACKLIGHT_LVLMSK = 0x1F,
5554 TP_EC_BACKLIGHT_CMDMSK = 0xE0,
5555 TP_EC_BACKLIGHT_MAPSW = 0x20,
5556};
5557
0e501834
HMH		 5558enum tpacpi_brightness_access_mode {
5559 TPACPI_BRGHT_MODE_AUTO = 0, /* Not implemented yet */
5560 TPACPI_BRGHT_MODE_EC, /* EC control */
5561 TPACPI_BRGHT_MODE_UCMS_STEP, /* UCMS step-based control */
5562 TPACPI_BRGHT_MODE_ECNVRAM, /* EC control w/ NVRAM store */
5563 TPACPI_BRGHT_MODE_MAX
5564};
5565
94954cc6 5566static struct backlight_device *ibm_backlight_device;
0e501834
HMH		 5567
5568static enum tpacpi_brightness_access_mode brightness_mode =
5569 TPACPI_BRGHT_MODE_MAX;
5570
f74a27d4
HMH		 5571static unsigned int brightness_enable = 2; /* 2 = auto, 0 = no, 1 = yes */
5572
b21a15f6 5573static struct mutex brightness_mutex;
56b6aeb0 5574
0e501834
HMH		 5575/* NVRAM brightness access,
5576 * call with brightness_mutex held! */
5577static unsigned int tpacpi_brightness_nvram_get(void)
b21a15f6 5578{
0e501834 5579 u8 lnvram;
b21a15f6 5580
0e501834
HMH		 5581 lnvram = (nvram_read_byte(TP_NVRAM_ADDR_BRIGHTNESS)
5582 & TP_NVRAM_MASK_LEVEL_BRIGHTNESS)
5583 >> TP_NVRAM_POS_LEVEL_BRIGHTNESS;
5584 lnvram &= (tp_features.bright_16levels) ? 0x0f : 0x07;
5585
5586 return lnvram;
5587}
5588
5589static void tpacpi_brightness_checkpoint_nvram(void)
5590{
5591 u8 lec = 0;
5592 u8 b_nvram;
5593
5594 if (brightness_mode != TPACPI_BRGHT_MODE_ECNVRAM)
5595 return;
5596
5597 vdbg_printk(TPACPI_DBG_BRGHT,
5598 "trying to checkpoint backlight level to NVRAM...\n");
5599
5600 if (mutex_lock_killable(&brightness_mutex) < 0)
5601 return;
5602
5603 if (unlikely(!acpi_ec_read(TP_EC_BACKLIGHT, &lec)))
5604 goto unlock;
5605 lec &= TP_EC_BACKLIGHT_LVLMSK;
5606 b_nvram = nvram_read_byte(TP_NVRAM_ADDR_BRIGHTNESS);
5607
5608 if (lec != ((b_nvram & TP_NVRAM_MASK_LEVEL_BRIGHTNESS)
5609 >> TP_NVRAM_POS_LEVEL_BRIGHTNESS)) {
5610 /* NVRAM needs update */
5611 b_nvram &= ~(TP_NVRAM_MASK_LEVEL_BRIGHTNESS <<
5612 TP_NVRAM_POS_LEVEL_BRIGHTNESS);
5613 b_nvram |= lec;
5614 nvram_write_byte(b_nvram, TP_NVRAM_ADDR_BRIGHTNESS);
5615 dbg_printk(TPACPI_DBG_BRGHT,
5616 "updated NVRAM backlight level to %u (0x%02x)\n",
5617 (unsigned int) lec, (unsigned int) b_nvram);
5618 } else
5619 vdbg_printk(TPACPI_DBG_BRGHT,
5620 "NVRAM backlight level already is %u (0x%02x)\n",
5621 (unsigned int) lec, (unsigned int) b_nvram);
5622
5623unlock:
5624 mutex_unlock(&brightness_mutex);
5625}
5626
5627
5628/* call with brightness_mutex held! */
5629static int tpacpi_brightness_get_raw(int *status)
5630{
5631 u8 lec = 0;
5632
5633 switch (brightness_mode) {
5634 case TPACPI_BRGHT_MODE_UCMS_STEP:
5635 *status = tpacpi_brightness_nvram_get();
5636 return 0;
5637 case TPACPI_BRGHT_MODE_EC:
5638 case TPACPI_BRGHT_MODE_ECNVRAM:
5639 if (unlikely(!acpi_ec_read(TP_EC_BACKLIGHT, &lec)))
2d5e94d7 5640 return -EIO;
0e501834
HMH		 5641 *status = lec;
5642 return 0;
5643 default:
5644 return -ENXIO;
b21a15f6 5645 }
0e501834
HMH		 5646}
5647
5648/* call with brightness_mutex held! */
5649/* do NOT call with illegal backlight level value */
5650static int tpacpi_brightness_set_ec(unsigned int value)
5651{
5652 u8 lec = 0;
5653
5654 if (unlikely(!acpi_ec_read(TP_EC_BACKLIGHT, &lec)))
5655 return -EIO;
5656
5657 if (unlikely(!acpi_ec_write(TP_EC_BACKLIGHT,
5658 (lec & TP_EC_BACKLIGHT_CMDMSK) |
5659 (value & TP_EC_BACKLIGHT_LVLMSK))))
5660 return -EIO;
5661
5662 return 0;
5663}
5664
5665/* call with brightness_mutex held! */
5666static int tpacpi_brightness_set_ucmsstep(unsigned int value)
5667{
5668 int cmos_cmd, inc;
5669 unsigned int current_value, i;
5670
5671 current_value = tpacpi_brightness_nvram_get();
5672
5673 if (value == current_value)
5674 return 0;
5675
5676 cmos_cmd = (value > current_value) ?
5677 TP_CMOS_BRIGHTNESS_UP :
5678 TP_CMOS_BRIGHTNESS_DOWN;
5679 inc = (value > current_value) ? 1 : -1;
5680
5681 for (i = current_value; i != value; i += inc)
5682 if (issue_thinkpad_cmos_command(cmos_cmd))
5683 return -EIO;
b21a15f6 5684
e11aecf1 5685 return 0;
b21a15f6
HMH		 5686}
5687
5688/* May return EINTR which can always be mapped to ERESTARTSYS */
0e501834 5689static int brightness_set(unsigned int value)
b21a15f6 5690{
0e501834 5691 int res;
b21a15f6 5692
e11aecf1
HMH		 5693 if (value > ((tp_features.bright_16levels)? 15 : 7) ||
5694 value < 0)
b21a15f6
HMH		 5695 return -EINVAL;
5696
0e501834
HMH		 5697 vdbg_printk(TPACPI_DBG_BRGHT,
5698 "set backlight level to %d\n", value);
5699
7646ea88 5700 res = mutex_lock_killable(&brightness_mutex);
b21a15f6
HMH		 5701 if (res < 0)
5702 return res;
5703
0e501834
HMH		 5704 switch (brightness_mode) {
5705 case TPACPI_BRGHT_MODE_EC:
5706 case TPACPI_BRGHT_MODE_ECNVRAM:
5707 res = tpacpi_brightness_set_ec(value);
5708 break;
5709 case TPACPI_BRGHT_MODE_UCMS_STEP:
5710 res = tpacpi_brightness_set_ucmsstep(value);
5711 break;
5712 default:
5713 res = -ENXIO;
b21a15f6
HMH		 5714 }
5715
b21a15f6
HMH		 5716 mutex_unlock(&brightness_mutex);
5717 return res;
5718}
5719
5720/* sysfs backlight class ----------------------------------------------- */
5721
5722static int brightness_update_status(struct backlight_device *bd)
5723{
0e501834 5724 unsigned int level =
b21a15f6
HMH		 5725 (bd->props.fb_blank == FB_BLANK_UNBLANK &&
5726 bd->props.power == FB_BLANK_UNBLANK) ?
0e501834
HMH		 5727 bd->props.brightness : 0;
5728
5729 dbg_printk(TPACPI_DBG_BRGHT,
5730 "backlight: attempt to set level to %d\n",
5731 level);
5732
5733 /* it is the backlight class's job (caller) to handle
5734 * EINTR and other errors properly */
5735 return brightness_set(level);
b21a15f6
HMH		 5736}
5737
e11aecf1 5738static int brightness_get(struct backlight_device *bd)
a3f104c0 5739{
e11aecf1 5740 int status, res;
a3f104c0 5741
0e501834 5742 res = mutex_lock_killable(&brightness_mutex);
e11aecf1 5743 if (res < 0)
0e501834
HMH		 5744 return 0;
5745
5746 res = tpacpi_brightness_get_raw(&status);
5747
5748 mutex_unlock(&brightness_mutex);
5749
5750 if (res < 0)
5751 return 0;
e11e211a 5752
e11aecf1 5753 return status & TP_EC_BACKLIGHT_LVLMSK;
e11e211a
HMH		 5754}
5755
b21a15f6 5756static struct backlight_ops ibm_backlight_data = {
35ff8b9f
HMH		 5757 .get_brightness = brightness_get,
5758 .update_status = brightness_update_status,
56b6aeb0 5759};
e11e211a 5760
b21a15f6 5761/* --------------------------------------------------------------------- */
e11e211a 5762
a5763f22 5763static int __init brightness_init(struct ibm_init_struct *iibm)
56b6aeb0
HMH		 5764{
5765 int b;
5766
fe08bc4b
HMH		 5767 vdbg_printk(TPACPI_DBG_INIT, "initializing brightness subdriver\n");
5768
f432255e
HMH		 5769 mutex_init(&brightness_mutex);
5770
b5972796
HMH		 5771 /*
5772 * We always attempt to detect acpi support, so as to switch
5773 * Lenovo Vista BIOS to ACPI brightness mode even if we are not
5774 * going to publish a backlight interface
5775 */
5776 b = tpacpi_check_std_acpi_brightness_support();
5777 if (b > 0) {
2dba1b5d
TR		 5778
5779 if (acpi_video_backlight_support()) {
5780 if (brightness_enable > 1) {
5781 printk(TPACPI_NOTICE
5782 "Standard ACPI backlight interface "
5783 "available, not loading native one.\n");
5784 return 1;
5785 } else if (brightness_enable == 1) {
5786 printk(TPACPI_NOTICE
5787 "Backlight control force enabled, even if standard "
5788 "ACPI backlight interface is available\n");
5789 }
5790 } else {
5791 if (brightness_enable > 1) {
5792 printk(TPACPI_NOTICE
5793 "Standard ACPI backlight interface not "
5794 "available, thinkpad_acpi native "
5795 "brightness control enabled\n");
5796 }
e11e211a 5797 }
87cc537a
HMH		 5798 }
5799
b5972796 5800 if (!brightness_enable) {
0e501834 5801 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_BRGHT,
b5972796
HMH		 5802 "brightness support disabled by "
5803 "module parameter\n");
5804 return 1;
5805 }
5806
5807 if (b > 16) {
5808 printk(TPACPI_ERR
5809 "Unsupported brightness interface, "
5810 "please contact %s\n", TPACPI_MAIL);
5811 return 1;
5812 }
5813 if (b == 16)
5814 tp_features.bright_16levels = 1;
5815
0e501834
HMH		 5816 /*
5817 * Check for module parameter bogosity, note that we
5818 * init brightness_mode to TPACPI_BRGHT_MODE_MAX in order to be
5819 * able to detect "unspecified"
5820 */
5821 if (brightness_mode > TPACPI_BRGHT_MODE_MAX)
5822 return -EINVAL;
24d3b774 5823
0e501834
HMH		 5824 /* TPACPI_BRGHT_MODE_AUTO not implemented yet, just use default */
5825 if (brightness_mode == TPACPI_BRGHT_MODE_AUTO ||
5826 brightness_mode == TPACPI_BRGHT_MODE_MAX) {
5827 if (thinkpad_id.vendor == PCI_VENDOR_ID_IBM) {
5828 /*
5829 * IBM models that define HBRV probably have
5830 * EC-based backlight level control
5831 */
5832 if (acpi_evalf(ec_handle, NULL, "HBRV", "qd"))
5833 /* T40-T43, R50-R52, R50e, R51e, X31-X41 */
5834 brightness_mode = TPACPI_BRGHT_MODE_ECNVRAM;
5835 else
5836 /* all other IBM ThinkPads */
5837 brightness_mode = TPACPI_BRGHT_MODE_UCMS_STEP;
5838 } else
5839 /* All Lenovo ThinkPads */
5840 brightness_mode = TPACPI_BRGHT_MODE_UCMS_STEP;
24d3b774 5841
0e501834
HMH		 5842 dbg_printk(TPACPI_DBG_BRGHT,
5843 "selected brightness_mode=%d\n",
5844 brightness_mode);
5845 }
24d3b774 5846
0e501834 5847 if (tpacpi_brightness_get_raw(&b) < 0)
24d3b774 5848 return 1;
56b6aeb0 5849
a3f104c0 5850 if (tp_features.bright_16levels)
35ff8b9f
HMH		 5851 printk(TPACPI_INFO
5852 "detected a 16-level brightness capable ThinkPad\n");
a3f104c0 5853
7d5a015e
HMH		 5854 ibm_backlight_device = backlight_device_register(
5855 TPACPI_BACKLIGHT_DEV_NAME, NULL, NULL,
5856 &ibm_backlight_data);
56b6aeb0 5857 if (IS_ERR(ibm_backlight_device)) {
e0c7dfe7 5858 printk(TPACPI_ERR "Could not register backlight device\n");
56b6aeb0
HMH		 5859 return PTR_ERR(ibm_backlight_device);
5860 }
0e501834
HMH		 5861 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_BRGHT,
5862 "brightness is supported\n");
56b6aeb0 5863
a3f104c0
HMH		 5864 ibm_backlight_device->props.max_brightness =
5865 (tp_features.bright_16levels)? 15 : 7;
e11aecf1 5866 ibm_backlight_device->props.brightness = b & TP_EC_BACKLIGHT_LVLMSK;
56b6aeb0
HMH		 5867 backlight_update_status(ibm_backlight_device);
5868
5869 return 0;
5870}
5871
0e501834
HMH		 5872static void brightness_suspend(pm_message_t state)
5873{
5874 tpacpi_brightness_checkpoint_nvram();
5875}
5876
5877static void brightness_shutdown(void)
5878{
5879 tpacpi_brightness_checkpoint_nvram();
5880}
5881
56b6aeb0
HMH		 5882static void brightness_exit(void)
5883{
5884 if (ibm_backlight_device) {
0e501834 5885 vdbg_printk(TPACPI_DBG_EXIT | TPACPI_DBG_BRGHT,
fe08bc4b 5886 "calling backlight_device_unregister()\n");
56b6aeb0 5887 backlight_device_unregister(ibm_backlight_device);
56b6aeb0 5888 }
0e501834
HMH		 5889
5890 tpacpi_brightness_checkpoint_nvram();
56b6aeb0
HMH		 5891}
5892
56b6aeb0
HMH		 5893static int brightness_read(char *p)
5894{
5895 int len = 0;
5896 int level;
5897
35ff8b9f
HMH		 5898 level = brightness_get(NULL);
5899 if (level < 0) {
56b6aeb0
HMH		 5900 len += sprintf(p + len, "level:\t\tunreadable\n");
5901 } else {
a3f104c0 5902 len += sprintf(p + len, "level:\t\t%d\n", level);
56b6aeb0
HMH		 5903 len += sprintf(p + len, "commands:\tup, down\n");
5904 len += sprintf(p + len, "commands:\tlevel <level>"
a3f104c0
HMH		 5905 " (<level> is 0-%d)\n",
5906 (tp_features.bright_16levels) ? 15 : 7);
56b6aeb0
HMH		 5907 }
5908
5909 return len;
5910}
5911
8acb0250
HM		 5912static int brightness_write(char *buf)
5913{
5914 int level;
4273af8d 5915 int rc;
1da177e4 5916 char *cmd;
a3f104c0 5917 int max_level = (tp_features.bright_16levels) ? 15 : 7;
1da177e4 5918
4273af8d
HMH		 5919 level = brightness_get(NULL);
5920 if (level < 0)
5921 return level;
78f81cc4 5922
4273af8d 5923 while ((cmd = next_cmd(&buf))) {
78f81cc4 5924 if (strlencmp(cmd, "up") == 0) {
4273af8d
HMH		 5925 if (level < max_level)
5926 level++;
78f81cc4 5927 } else if (strlencmp(cmd, "down") == 0) {
4273af8d
HMH		 5928 if (level > 0)
5929 level--;
5930 } else if (sscanf(cmd, "level %d", &level) == 1 &&
5931 level >= 0 && level <= max_level) {
5932 /* new level set */
78f81cc4
BD		 5933 } else
5934 return -EINVAL;
78f81cc4
BD		 5935 }
5936
0e501834
HMH		 5937 tpacpi_disclose_usertask("procfs brightness",
5938 "set level to %d\n", level);
5939
4273af8d
HMH		 5940 /*
5941 * Now we know what the final level should be, so we try to set it.
5942 * Doing it this way makes the syscall restartable in case of EINTR
5943 */
5944 rc = brightness_set(level);
5945 return (rc == -EINTR)? ERESTARTSYS : rc;
78f81cc4
BD		 5946}
5947
a5763f22
HMH		 5948static struct ibm_struct brightness_driver_data = {
5949 .name = "brightness",
5950 .read = brightness_read,
5951 .write = brightness_write,
5952 .exit = brightness_exit,
0e501834
HMH		 5953 .suspend = brightness_suspend,
5954 .shutdown = brightness_shutdown,
a5763f22
HMH		 5955};
5956
56b6aeb0
HMH		 5957/*************************************************************************
5958 * Volume subdriver
5959 */
fb87a811 5960
f74a27d4
HMH		 5961static int volume_offset = 0x30;
5962
78f81cc4
BD		 5963static int volume_read(char *p)
5964{
5965 int len = 0;
5966 u8 level;
5967
5968 if (!acpi_ec_read(volume_offset, &level)) {
5969 len += sprintf(p + len, "level:\t\tunreadable\n");
5970 } else {
5971 len += sprintf(p + len, "level:\t\t%d\n", level & 0xf);
5972 len += sprintf(p + len, "mute:\t\t%s\n", onoff(level, 6));
5973 len += sprintf(p + len, "commands:\tup, down, mute\n");
5974 len += sprintf(p + len, "commands:\tlevel <level>"
5975 " (<level> is 0-15)\n");
5976 }
5977
5978 return len;
5979}
5980
78f81cc4
BD		 5981static int volume_write(char *buf)
5982{
5983 int cmos_cmd, inc, i;
5984 u8 level, mute;
5985 int new_level, new_mute;
5986 char *cmd;
5987
5988 while ((cmd = next_cmd(&buf))) {
5989 if (!acpi_ec_read(volume_offset, &level))
5990 return -EIO;
5991 new_mute = mute = level & 0x40;
5992 new_level = level = level & 0xf;
5993
5994 if (strlencmp(cmd, "up") == 0) {
5995 if (mute)
5996 new_mute = 0;
5997 else
5998 new_level = level == 15 ? 15 : level + 1;
5999 } else if (strlencmp(cmd, "down") == 0) {
6000 if (mute)
6001 new_mute = 0;
6002 else
6003 new_level = level == 0 ? 0 : level - 1;
6004 } else if (sscanf(cmd, "level %d", &new_level) == 1 &&
6005 new_level >= 0 && new_level <= 15) {
6006 /* new_level set */
6007 } else if (strlencmp(cmd, "mute") == 0) {
6008 new_mute = 0x40;
1da177e4
LT		 6009 } else
6010 return -EINVAL;
6011
35ff8b9f
HMH		 6012 if (new_level != level) {
6013 /* mute doesn't change */
6014
6015 cmos_cmd = (new_level > level) ?
6016 TP_CMOS_VOLUME_UP : TP_CMOS_VOLUME_DOWN;
78f81cc4
BD		 6017 inc = new_level > level ? 1 : -1;
6018
c9bea99c 6019 if (mute && (issue_thinkpad_cmos_command(cmos_cmd) ||
78f81cc4
BD		 6020 !acpi_ec_write(volume_offset, level)))
6021 return -EIO;
6022
6023 for (i = level; i != new_level; i += inc)
c9bea99c 6024 if (issue_thinkpad_cmos_command(cmos_cmd) ||
78f81cc4
BD		 6025 !acpi_ec_write(volume_offset, i + inc))
6026 return -EIO;
6027
35ff8b9f
HMH		 6028 if (mute &&
6029 (issue_thinkpad_cmos_command(TP_CMOS_VOLUME_MUTE) ||
6030 !acpi_ec_write(volume_offset, new_level + mute))) {
78f81cc4 6031 return -EIO;
35ff8b9f 6032 }
78f81cc4
BD		 6033 }
6034
35ff8b9f
HMH		 6035 if (new_mute != mute) {
6036 /* level doesn't change */
6037
6038 cmos_cmd = (new_mute) ?
6039 TP_CMOS_VOLUME_MUTE : TP_CMOS_VOLUME_UP;
78f81cc4 6040
c9bea99c 6041 if (issue_thinkpad_cmos_command(cmos_cmd) ||
78f81cc4
BD		 6042 !acpi_ec_write(volume_offset, level + new_mute))
6043 return -EIO;
6044 }
6045 }
6046
6047 return 0;
6048}
6049
a5763f22
HMH		 6050static struct ibm_struct volume_driver_data = {
6051 .name = "volume",
6052 .read = volume_read,
6053 .write = volume_write,
6054};
56b6aeb0
HMH		 6055
6056/*************************************************************************
6057 * Fan subdriver
6058 */
6059
6060/*
6061 * FAN ACCESS MODES
6062 *
efa27145 6063 * TPACPI_FAN_RD_ACPI_GFAN:
56b6aeb0
HMH		 6064 * ACPI GFAN method: returns fan level
6065 *
efa27145 6066 * see TPACPI_FAN_WR_ACPI_SFAN
f51d1a39 6067 * EC 0x2f (HFSP) not available if GFAN exists
56b6aeb0 6068 *
efa27145 6069 * TPACPI_FAN_WR_ACPI_SFAN:
56b6aeb0
HMH		 6070 * ACPI SFAN method: sets fan level, 0 (stop) to 7 (max)
6071 *
f51d1a39
HMH		 6072 * EC 0x2f (HFSP) might be available *for reading*, but do not use
6073 * it for writing.
56b6aeb0 6074 *
efa27145 6075 * TPACPI_FAN_WR_TPEC:
f51d1a39
HMH		 6076 * ThinkPad EC register 0x2f (HFSP): fan control loop mode
6077 * Supported on almost all ThinkPads
56b6aeb0
HMH		 6078 *
6079 * Fan speed changes of any sort (including those caused by the
6080 * disengaged mode) are usually done slowly by the firmware as the
6081 * maximum ammount of fan duty cycle change per second seems to be
6082 * limited.
6083 *
6084 * Reading is not available if GFAN exists.
6085 * Writing is not available if SFAN exists.
6086 *
6087 * Bits
6088 * 7 automatic mode engaged;
6089 * (default operation mode of the ThinkPad)
6090 * fan level is ignored in this mode.
f51d1a39 6091 * 6 full speed mode (takes precedence over bit 7);
56b6aeb0 6092 * not available on all thinkpads. May disable
f51d1a39
HMH		 6093 * the tachometer while the fan controller ramps up
6094 * the speed (which can take up to a few *minutes*).
6095 * Speeds up fan to 100% duty-cycle, which is far above
6096 * the standard RPM levels. It is not impossible that
6097 * it could cause hardware damage.
56b6aeb0
HMH		 6098 * 5-3 unused in some models. Extra bits for fan level
6099 * in others, but still useless as all values above
6100 * 7 map to the same speed as level 7 in these models.
6101 * 2-0 fan level (0..7 usually)
6102 * 0x00 = stop
6103 * 0x07 = max (set when temperatures critical)
6104 * Some ThinkPads may have other levels, see
efa27145 6105 * TPACPI_FAN_WR_ACPI_FANS (X31/X40/X41)
56b6aeb0
HMH		 6106 *
6107 * FIRMWARE BUG: on some models, EC 0x2f might not be initialized at
6108 * boot. Apparently the EC does not intialize it, so unless ACPI DSDT
6109 * does so, its initial value is meaningless (0x07).
6110 *
6111 * For firmware bugs, refer to:
6112 * http://thinkwiki.org/wiki/Embedded_Controller_Firmware#Firmware_Issues
6113 *
6114 * ----
6115 *
6116 * ThinkPad EC register 0x84 (LSB), 0x85 (MSB):
6117 * Main fan tachometer reading (in RPM)
6118 *
6119 * This register is present on all ThinkPads with a new-style EC, and
6120 * it is known not to be present on the A21m/e, and T22, as there is
6121 * something else in offset 0x84 according to the ACPI DSDT. Other
6122 * ThinkPads from this same time period (and earlier) probably lack the
6123 * tachometer as well.
6124 *
877d0310 6125 * Unfortunately a lot of ThinkPads with new-style ECs but whose firmware
56b6aeb0
HMH		 6126 * was never fixed by IBM to report the EC firmware version string
6127 * probably support the tachometer (like the early X models), so
6128 * detecting it is quite hard. We need more data to know for sure.
6129 *
6130 * FIRMWARE BUG: always read 0x84 first, otherwise incorrect readings
6131 * might result.
6132 *
f51d1a39
HMH		 6133 * FIRMWARE BUG: may go stale while the EC is switching to full speed
6134 * mode.
56b6aeb0
HMH		 6135 *
6136 * For firmware bugs, refer to:
6137 * http://thinkwiki.org/wiki/Embedded_Controller_Firmware#Firmware_Issues
6138 *
efa27145 6139 * TPACPI_FAN_WR_ACPI_FANS:
56b6aeb0
HMH		 6140 * ThinkPad X31, X40, X41. Not available in the X60.
6141 *
6142 * FANS ACPI handle: takes three arguments: low speed, medium speed,
6143 * high speed. ACPI DSDT seems to map these three speeds to levels
6144 * as follows: STOP LOW LOW MED MED HIGH HIGH HIGH HIGH
6145 * (this map is stored on FAN0..FAN8 as "0,1,1,2,2,3,3,3,3")
6146 *
6147 * The speeds are stored on handles
6148 * (FANA:FAN9), (FANC:FANB), (FANE:FAND).
6149 *
6150 * There are three default speed sets, acessible as handles:
6151 * FS1L,FS1M,FS1H; FS2L,FS2M,FS2H; FS3L,FS3M,FS3H
6152 *
6153 * ACPI DSDT switches which set is in use depending on various
6154 * factors.
6155 *
efa27145 6156 * TPACPI_FAN_WR_TPEC is also available and should be used to
56b6aeb0
HMH		 6157 * command the fan. The X31/X40/X41 seems to have 8 fan levels,
6158 * but the ACPI tables just mention level 7.
6159 */
6160
f74a27d4
HMH		 6161enum { /* Fan control constants */
6162 fan_status_offset = 0x2f, /* EC register 0x2f */
6163 fan_rpm_offset = 0x84, /* EC register 0x84: LSB, 0x85 MSB (RPM)
6164 * 0x84 must be read before 0x85 */
6165
6166 TP_EC_FAN_FULLSPEED = 0x40, /* EC fan mode: full speed */
6167 TP_EC_FAN_AUTO = 0x80, /* EC fan mode: auto fan control */
6168
6169 TPACPI_FAN_LAST_LEVEL = 0x100, /* Use cached last-seen fan level */
6170};
6171
6172enum fan_status_access_mode {
6173 TPACPI_FAN_NONE = 0, /* No fan status or control */
6174 TPACPI_FAN_RD_ACPI_GFAN, /* Use ACPI GFAN */
6175 TPACPI_FAN_RD_TPEC, /* Use ACPI EC regs 0x2f, 0x84-0x85 */
6176};
6177
6178enum fan_control_access_mode {
6179 TPACPI_FAN_WR_NONE = 0, /* No fan control */
6180 TPACPI_FAN_WR_ACPI_SFAN, /* Use ACPI SFAN */
6181 TPACPI_FAN_WR_TPEC, /* Use ACPI EC reg 0x2f */
6182 TPACPI_FAN_WR_ACPI_FANS, /* Use ACPI FANS and EC reg 0x2f */
6183};
6184
6185enum fan_control_commands {
6186 TPACPI_FAN_CMD_SPEED = 0x0001, /* speed command */
6187 TPACPI_FAN_CMD_LEVEL = 0x0002, /* level command */
6188 TPACPI_FAN_CMD_ENABLE = 0x0004, /* enable/disable cmd,
6189 * and also watchdog cmd */
6190};
6191
6192static int fan_control_allowed;
6193
69ba91cb
HMH		 6194static enum fan_status_access_mode fan_status_access_mode;
6195static enum fan_control_access_mode fan_control_access_mode;
6196static enum fan_control_commands fan_control_commands;
78f81cc4 6197
778b4d74 6198static u8 fan_control_initial_status;
fe98a52c 6199static u8 fan_control_desired_level;
0081b162 6200static u8 fan_control_resume_level;
f74a27d4
HMH		 6201static int fan_watchdog_maxinterval;
6202
6203static struct mutex fan_mutex;
778b4d74 6204
25c68a33 6205static void fan_watchdog_fire(struct work_struct *ignored);
25c68a33 6206static DECLARE_DELAYED_WORK(fan_watchdog_task, fan_watchdog_fire);
16663a87 6207
e0c7dfe7
HMH		 6208TPACPI_HANDLE(fans, ec, "FANS"); /* X31, X40, X41 */
6209TPACPI_HANDLE(gfan, ec, "GFAN", /* 570 */
56b6aeb0
HMH		 6210 "\\FSPD", /* 600e/x, 770e, 770x */
6211 ); /* all others */
e0c7dfe7 6212TPACPI_HANDLE(sfan, ec, "SFAN", /* 570 */
56b6aeb0
HMH		 6213 "JFNS", /* 770x-JL */
6214 ); /* all others */
6215
1c2ece75
HMH		 6216/*
6217 * Unitialized HFSP quirk: ACPI DSDT and EC fail to initialize the
6218 * HFSP register at boot, so it contains 0x07 but the Thinkpad could
6219 * be in auto mode (0x80).
6220 *
6221 * This is corrected by any write to HFSP either by the driver, or
6222 * by the firmware.
6223 *
6224 * We assume 0x07 really means auto mode while this quirk is active,
6225 * as this is far more likely than the ThinkPad being in level 7,
6226 * which is only used by the firmware during thermal emergencies.
6227 */
6228
6229static void fan_quirk1_detect(void)
6230{
6231 /* In some ThinkPads, neither the EC nor the ACPI
6232 * DSDT initialize the HFSP register, and it ends up
6233 * being initially set to 0x07 when it *could* be
6234 * either 0x07 or 0x80.
6235 *
6236 * Enable for TP-1Y (T43), TP-78 (R51e),
6237 * TP-76 (R52), TP-70 (T43, R52), which are known
6238 * to be buggy. */
6239 if (fan_control_initial_status == 0x07) {
6240 switch (thinkpad_id.ec_model) {
6241 case 0x5931: /* TP-1Y */
6242 case 0x3837: /* TP-78 */
6243 case 0x3637: /* TP-76 */
6244 case 0x3037: /* TP-70 */
6245 printk(TPACPI_NOTICE
6246 "fan_init: initial fan status is unknown, "
6247 "assuming it is in auto mode\n");
6248 tp_features.fan_ctrl_status_undef = 1;
6249 ;;
6250 }
6251 }
6252}
6253
6254static void fan_quirk1_handle(u8 *fan_status)
6255{
6256 if (unlikely(tp_features.fan_ctrl_status_undef)) {
6257 if (*fan_status != fan_control_initial_status) {
6258 /* something changed the HFSP regisnter since
6259 * driver init time, so it is not undefined
6260 * anymore */
6261 tp_features.fan_ctrl_status_undef = 0;
6262 } else {
6263 /* Return most likely status. In fact, it
6264 * might be the only possible status */
6265 *fan_status = TP_EC_FAN_AUTO;
6266 }
6267 }
6268}
6269
fe98a52c 6270/*
b21a15f6 6271 * Call with fan_mutex held
fe98a52c 6272 */
b21a15f6 6273static void fan_update_desired_level(u8 status)
fe98a52c 6274{
b21a15f6
HMH		 6275 if ((status &
6276 (TP_EC_FAN_AUTO | TP_EC_FAN_FULLSPEED)) == 0) {
6277 if (status > 7)
6278 fan_control_desired_level = 7;
6279 else
6280 fan_control_desired_level = status;
6281 }
6282}
fe98a52c 6283
b21a15f6
HMH		 6284static int fan_get_status(u8 *status)
6285{
6286 u8 s;
fe98a52c 6287
b21a15f6
HMH		 6288 /* TODO:
6289 * Add TPACPI_FAN_RD_ACPI_FANS ? */
fe98a52c 6290
b21a15f6
HMH		 6291 switch (fan_status_access_mode) {
6292 case TPACPI_FAN_RD_ACPI_GFAN:
6293 /* 570, 600e/x, 770e, 770x */
fe98a52c 6294
b21a15f6
HMH		 6295 if (unlikely(!acpi_evalf(gfan_handle, &s, NULL, "d")))
6296 return -EIO;
fe98a52c 6297
b21a15f6
HMH		 6298 if (likely(status))
6299 *status = s & 0x07;
fe98a52c 6300
b21a15f6
HMH		 6301 break;
6302
6303 case TPACPI_FAN_RD_TPEC:
6304 /* all except 570, 600e/x, 770e, 770x */
6305 if (unlikely(!acpi_ec_read(fan_status_offset, &s)))
6306 return -EIO;
6307
1c2ece75 6308 if (likely(status)) {
b21a15f6 6309 *status = s;
1c2ece75
HMH		 6310 fan_quirk1_handle(status);
6311 }
fe98a52c 6312
fe98a52c 6313 break;
b21a15f6 6314
fe98a52c 6315 default:
b21a15f6 6316 return -ENXIO;
fe98a52c
HMH		 6317 }
6318
b21a15f6
HMH		 6319 return 0;
6320}
fe98a52c 6321
b21a15f6
HMH		 6322static int fan_get_status_safe(u8 *status)
6323{
6324 int rc;
6325 u8 s;
fe98a52c 6326
7646ea88 6327 if (mutex_lock_killable(&fan_mutex))
b21a15f6
HMH		 6328 return -ERESTARTSYS;
6329 rc = fan_get_status(&s);
6330 if (!rc)
6331 fan_update_desired_level(s);
6332 mutex_unlock(&fan_mutex);
fe98a52c 6333
b21a15f6
HMH		 6334 if (status)
6335 *status = s;
fe98a52c 6336
b21a15f6
HMH		 6337 return rc;
6338}
6339
6340static int fan_get_speed(unsigned int *speed)
fe98a52c 6341{
b21a15f6 6342 u8 hi, lo;
fe98a52c 6343
b21a15f6
HMH		 6344 switch (fan_status_access_mode) {
6345 case TPACPI_FAN_RD_TPEC:
6346 /* all except 570, 600e/x, 770e, 770x */
6347 if (unlikely(!acpi_ec_read(fan_rpm_offset, &lo) ||
6348 !acpi_ec_read(fan_rpm_offset + 1, &hi)))
6349 return -EIO;
fe98a52c 6350
b21a15f6
HMH		 6351 if (likely(speed))
6352 *speed = (hi << 8) | lo;
fe98a52c 6353
b21a15f6 6354 break;
fe98a52c 6355
b21a15f6
HMH		 6356 default:
6357 return -ENXIO;
6358 }
fe98a52c 6359
b21a15f6 6360 return 0;
fe98a52c
HMH		 6361}
6362
b21a15f6 6363static int fan_set_level(int level)
fe98a52c 6364{
b21a15f6
HMH		 6365 if (!fan_control_allowed)
6366 return -EPERM;
fe98a52c 6367
b21a15f6
HMH		 6368 switch (fan_control_access_mode) {
6369 case TPACPI_FAN_WR_ACPI_SFAN:
6370 if (level >= 0 && level <= 7) {
6371 if (!acpi_evalf(sfan_handle, NULL, NULL, "vd", level))
6372 return -EIO;
6373 } else
6374 return -EINVAL;
6375 break;
fe98a52c 6376
b21a15f6
HMH		 6377 case TPACPI_FAN_WR_ACPI_FANS:
6378 case TPACPI_FAN_WR_TPEC:
0081b162
HMH		 6379 if (!(level & TP_EC_FAN_AUTO) &&
6380 !(level & TP_EC_FAN_FULLSPEED) &&
b21a15f6
HMH		 6381 ((level < 0) || (level > 7)))
6382 return -EINVAL;
fe98a52c 6383
b21a15f6
HMH		 6384 /* safety net should the EC not support AUTO
6385 * or FULLSPEED mode bits and just ignore them */
6386 if (level & TP_EC_FAN_FULLSPEED)
6387 level |= 7; /* safety min speed 7 */
547266e4 6388 else if (level & TP_EC_FAN_AUTO)
b21a15f6 6389 level |= 4; /* safety min speed 4 */
fe98a52c 6390
b21a15f6
HMH		 6391 if (!acpi_ec_write(fan_status_offset, level))
6392 return -EIO;
6393 else
6394 tp_features.fan_ctrl_status_undef = 0;
6395 break;
fe98a52c 6396
b21a15f6
HMH		 6397 default:
6398 return -ENXIO;
6399 }
74a60c0f
HMH		 6400
6401 vdbg_printk(TPACPI_DBG_FAN,
6402 "fan control: set fan control register to 0x%02x\n", level);
b21a15f6 6403 return 0;
fe98a52c
HMH		 6404}
6405
b21a15f6 6406static int fan_set_level_safe(int level)
fe98a52c 6407{
b21a15f6 6408 int rc;
fe98a52c 6409
b21a15f6
HMH		 6410 if (!fan_control_allowed)
6411 return -EPERM;
fe98a52c 6412
7646ea88 6413 if (mutex_lock_killable(&fan_mutex))
b21a15f6 6414 return -ERESTARTSYS;
fe98a52c 6415
b21a15f6
HMH		 6416 if (level == TPACPI_FAN_LAST_LEVEL)
6417 level = fan_control_desired_level;
fe98a52c 6418
b21a15f6
HMH		 6419 rc = fan_set_level(level);
6420 if (!rc)
6421 fan_update_desired_level(level);
6422
6423 mutex_unlock(&fan_mutex);
6424 return rc;
fe98a52c
HMH		 6425}
6426
b21a15f6 6427static int fan_set_enable(void)
fe98a52c 6428{
b21a15f6
HMH		 6429 u8 s;
6430 int rc;
fe98a52c 6431
ecf2a80a
HMH		 6432 if (!fan_control_allowed)
6433 return -EPERM;
6434
7646ea88 6435 if (mutex_lock_killable(&fan_mutex))
b21a15f6 6436 return -ERESTARTSYS;
fe98a52c 6437
b21a15f6
HMH		 6438 switch (fan_control_access_mode) {
6439 case TPACPI_FAN_WR_ACPI_FANS:
6440 case TPACPI_FAN_WR_TPEC:
6441 rc = fan_get_status(&s);
6442 if (rc < 0)
6443 break;
fe98a52c 6444
b21a15f6
HMH		 6445 /* Don't go out of emergency fan mode */
6446 if (s != 7) {
6447 s &= 0x07;
6448 s |= TP_EC_FAN_AUTO | 4; /* min fan speed 4 */
6449 }
fe98a52c 6450
b21a15f6
HMH		 6451 if (!acpi_ec_write(fan_status_offset, s))
6452 rc = -EIO;
6453 else {
6454 tp_features.fan_ctrl_status_undef = 0;
6455 rc = 0;
6456 }
6457 break;
fe98a52c 6458
b21a15f6
HMH		 6459 case TPACPI_FAN_WR_ACPI_SFAN:
6460 rc = fan_get_status(&s);
6461 if (rc < 0)
6462 break;
fe98a52c 6463
b21a15f6 6464 s &= 0x07;
fe98a52c 6465
b21a15f6
HMH		 6466 /* Set fan to at least level 4 */
6467 s |= 4;
fe08bc4b 6468
b21a15f6 6469 if (!acpi_evalf(sfan_handle, NULL, NULL, "vd", s))
35ff8b9f 6470 rc = -EIO;
b21a15f6
HMH		 6471 else
6472 rc = 0;
6473 break;
78f81cc4 6474
b21a15f6
HMH		 6475 default:
6476 rc = -ENXIO;
6477 }
5fba344c 6478
b21a15f6 6479 mutex_unlock(&fan_mutex);
74a60c0f
HMH		 6480
6481 if (!rc)
6482 vdbg_printk(TPACPI_DBG_FAN,
6483 "fan control: set fan control register to 0x%02x\n",
6484 s);
b21a15f6 6485 return rc;
69ba91cb 6486}
78f81cc4 6487
b21a15f6 6488static int fan_set_disable(void)
78f81cc4 6489{
b21a15f6 6490 int rc;
c52f0aa5 6491
b21a15f6
HMH		 6492 if (!fan_control_allowed)
6493 return -EPERM;
78f81cc4 6494
7646ea88 6495 if (mutex_lock_killable(&fan_mutex))
b21a15f6 6496 return -ERESTARTSYS;
3ef8a609 6497
b21a15f6
HMH		 6498 rc = 0;
6499 switch (fan_control_access_mode) {
6500 case TPACPI_FAN_WR_ACPI_FANS:
6501 case TPACPI_FAN_WR_TPEC:
6502 if (!acpi_ec_write(fan_status_offset, 0x00))
6503 rc = -EIO;
6504 else {
6505 fan_control_desired_level = 0;
6506 tp_features.fan_ctrl_status_undef = 0;
6507 }
3ef8a609
HMH		 6508 break;
6509
b21a15f6
HMH		 6510 case TPACPI_FAN_WR_ACPI_SFAN:
6511 if (!acpi_evalf(sfan_handle, NULL, NULL, "vd", 0x00))
6512 rc = -EIO;
6513 else
6514 fan_control_desired_level = 0;
c52f0aa5
HMH		 6515 break;
6516
6517 default:
b21a15f6 6518 rc = -ENXIO;
78f81cc4
BD		 6519 }
6520
74a60c0f
HMH		 6521 if (!rc)
6522 vdbg_printk(TPACPI_DBG_FAN,
6523 "fan control: set fan control register to 0\n");
fe98a52c 6524
fe98a52c 6525 mutex_unlock(&fan_mutex);
fe98a52c
HMH		 6526 return rc;
6527}
6528
b21a15f6 6529static int fan_set_speed(int speed)
c52f0aa5 6530{
b21a15f6 6531 int rc;
c52f0aa5 6532
b21a15f6
HMH		 6533 if (!fan_control_allowed)
6534 return -EPERM;
3ef8a609 6535
7646ea88 6536 if (mutex_lock_killable(&fan_mutex))
b21a15f6 6537 return -ERESTARTSYS;
c52f0aa5 6538
b21a15f6
HMH		 6539 rc = 0;
6540 switch (fan_control_access_mode) {
6541 case TPACPI_FAN_WR_ACPI_FANS:
6542 if (speed >= 0 && speed <= 65535) {
6543 if (!acpi_evalf(fans_handle, NULL, NULL, "vddd",
6544 speed, speed, speed))
6545 rc = -EIO;
6546 } else
6547 rc = -EINVAL;
c52f0aa5
HMH		 6548 break;
6549
6550 default:
b21a15f6 6551 rc = -ENXIO;
c52f0aa5
HMH		 6552 }
6553
b21a15f6
HMH		 6554 mutex_unlock(&fan_mutex);
6555 return rc;
16663a87
HMH		 6556}
6557
6558static void fan_watchdog_reset(void)
6559{
94954cc6 6560 static int fan_watchdog_active;
16663a87 6561
4985cd0a
HMH		 6562 if (fan_control_access_mode == TPACPI_FAN_WR_NONE)
6563 return;
6564
16663a87
HMH		 6565 if (fan_watchdog_active)
6566 cancel_delayed_work(&fan_watchdog_task);
6567
8fef502e
HMH		 6568 if (fan_watchdog_maxinterval > 0 &&
6569 tpacpi_lifecycle != TPACPI_LIFE_EXITING) {
16663a87 6570 fan_watchdog_active = 1;
e0e3c061 6571 if (!queue_delayed_work(tpacpi_wq, &fan_watchdog_task,
16663a87
HMH		 6572 msecs_to_jiffies(fan_watchdog_maxinterval
6573 * 1000))) {
35ff8b9f 6574 printk(TPACPI_ERR
e0e3c061 6575 "failed to queue the fan watchdog, "
16663a87
HMH		 6576 "watchdog will not trigger\n");
6577 }
6578 } else
6579 fan_watchdog_active = 0;
6580}
6581
b21a15f6 6582static void fan_watchdog_fire(struct work_struct *ignored)
78f81cc4 6583{
b21a15f6 6584 int rc;
18ad7996 6585
b21a15f6
HMH		 6586 if (tpacpi_lifecycle != TPACPI_LIFE_RUNNING)
6587 return;
a12095c2 6588
e0c7dfe7 6589 printk(TPACPI_NOTICE "fan watchdog: enabling fan\n");
b21a15f6
HMH		 6590 rc = fan_set_enable();
6591 if (rc < 0) {
e0c7dfe7 6592 printk(TPACPI_ERR "fan watchdog: error %d while enabling fan, "
b21a15f6
HMH		 6593 "will try again later...\n", -rc);
6594 /* reschedule for later */
6595 fan_watchdog_reset();
6596 }
6597}
eaa7571b 6598
b21a15f6
HMH		 6599/*
6600 * SYSFS fan layout: hwmon compatible (device)
6601 *
6602 * pwm*_enable:
6603 * 0: "disengaged" mode
6604 * 1: manual mode
6605 * 2: native EC "auto" mode (recommended, hardware default)
6606 *
6607 * pwm*: set speed in manual mode, ignored otherwise.
6608 * 0 is level 0; 255 is level 7. Intermediate points done with linear
6609 * interpolation.
6610 *
6611 * fan*_input: tachometer reading, RPM
6612 *
6613 *
6614 * SYSFS fan layout: extensions
6615 *
6616 * fan_watchdog (driver):
6617 * fan watchdog interval in seconds, 0 disables (default), max 120
6618 */
6619
6620/* sysfs fan pwm1_enable ----------------------------------------------- */
6621static ssize_t fan_pwm1_enable_show(struct device *dev,
6622 struct device_attribute *attr,
6623 char *buf)
6624{
6625 int res, mode;
6626 u8 status;
6627
6628 res = fan_get_status_safe(&status);
6629 if (res)
6630 return res;
6631
b21a15f6
HMH		 6632 if (status & TP_EC_FAN_FULLSPEED) {
6633 mode = 0;
6634 } else if (status & TP_EC_FAN_AUTO) {
6635 mode = 2;
6636 } else
6637 mode = 1;
6638
6639 return snprintf(buf, PAGE_SIZE, "%d\n", mode);
6640}
a12095c2 6641
b21a15f6
HMH		 6642static ssize_t fan_pwm1_enable_store(struct device *dev,
6643 struct device_attribute *attr,
6644 const char *buf, size_t count)
6645{
6646 unsigned long t;
6647 int res, level;
6648
6649 if (parse_strtoul(buf, 2, &t))
6650 return -EINVAL;
6651
74a60c0f
HMH		 6652 tpacpi_disclose_usertask("hwmon pwm1_enable",
6653 "set fan mode to %lu\n", t);
6654
b21a15f6
HMH		 6655 switch (t) {
6656 case 0:
6657 level = TP_EC_FAN_FULLSPEED;
6658 break;
6659 case 1:
6660 level = TPACPI_FAN_LAST_LEVEL;
6661 break;
6662 case 2:
6663 level = TP_EC_FAN_AUTO;
6664 break;
6665 case 3:
6666 /* reserved for software-controlled auto mode */
6667 return -ENOSYS;
18ad7996 6668 default:
b21a15f6 6669 return -EINVAL;
18ad7996 6670 }
b21a15f6
HMH		 6671
6672 res = fan_set_level_safe(level);
6673 if (res == -ENXIO)
6674 return -EINVAL;
6675 else if (res < 0)
6676 return res;
6677
6678 fan_watchdog_reset();
6679
6680 return count;
18ad7996
HMH		 6681}
6682
b21a15f6
HMH		 6683static struct device_attribute dev_attr_fan_pwm1_enable =
6684 __ATTR(pwm1_enable, S_IWUSR | S_IRUGO,
6685 fan_pwm1_enable_show, fan_pwm1_enable_store);
6686
6687/* sysfs fan pwm1 ------------------------------------------------------ */
6688static ssize_t fan_pwm1_show(struct device *dev,
6689 struct device_attribute *attr,
6690 char *buf)
fe98a52c 6691{
b21a15f6
HMH		 6692 int res;
6693 u8 status;
fe98a52c 6694
b21a15f6
HMH		 6695 res = fan_get_status_safe(&status);
6696 if (res)
6697 return res;
ecf2a80a 6698
b21a15f6
HMH		 6699 if ((status &
6700 (TP_EC_FAN_AUTO | TP_EC_FAN_FULLSPEED)) != 0)
6701 status = fan_control_desired_level;
fe98a52c 6702
b21a15f6
HMH		 6703 if (status > 7)
6704 status = 7;
fe98a52c 6705
b21a15f6 6706 return snprintf(buf, PAGE_SIZE, "%u\n", (status * 255) / 7);
fe98a52c
HMH		 6707}
6708
b21a15f6
HMH		 6709static ssize_t fan_pwm1_store(struct device *dev,
6710 struct device_attribute *attr,
6711 const char *buf, size_t count)
18ad7996 6712{
b21a15f6 6713 unsigned long s;
1c6a334e 6714 int rc;
b21a15f6 6715 u8 status, newlevel;
1c6a334e 6716
b21a15f6
HMH		 6717 if (parse_strtoul(buf, 255, &s))
6718 return -EINVAL;
6719
74a60c0f
HMH		 6720 tpacpi_disclose_usertask("hwmon pwm1",
6721 "set fan speed to %lu\n", s);
6722
b21a15f6
HMH		 6723 /* scale down from 0-255 to 0-7 */
6724 newlevel = (s >> 5) & 0x07;
ecf2a80a 6725
7646ea88 6726 if (mutex_lock_killable(&fan_mutex))
fc589a3c 6727 return -ERESTARTSYS;
40ca9fdf 6728
b21a15f6
HMH		 6729 rc = fan_get_status(&status);
6730 if (!rc && (status &
6731 (TP_EC_FAN_AUTO | TP_EC_FAN_FULLSPEED)) == 0) {
6732 rc = fan_set_level(newlevel);
6733 if (rc == -ENXIO)
6734 rc = -EINVAL;
6735 else if (!rc) {
6736 fan_update_desired_level(newlevel);
6737 fan_watchdog_reset();
eaa7571b 6738 }
b21a15f6 6739 }
1c6a334e 6740
b21a15f6
HMH		 6741 mutex_unlock(&fan_mutex);
6742 return (rc)? rc : count;
6743}
1c6a334e 6744
b21a15f6
HMH		 6745static struct device_attribute dev_attr_fan_pwm1 =
6746 __ATTR(pwm1, S_IWUSR | S_IRUGO,
6747 fan_pwm1_show, fan_pwm1_store);
1c6a334e 6748
b21a15f6
HMH		 6749/* sysfs fan fan1_input ------------------------------------------------ */
6750static ssize_t fan_fan1_input_show(struct device *dev,
6751 struct device_attribute *attr,
6752 char *buf)
6753{
6754 int res;
6755 unsigned int speed;
1c6a334e 6756
b21a15f6
HMH		 6757 res = fan_get_speed(&speed);
6758 if (res < 0)
6759 return res;
1c6a334e 6760
b21a15f6
HMH		 6761 return snprintf(buf, PAGE_SIZE, "%u\n", speed);
6762}
18ad7996 6763
b21a15f6
HMH		 6764static struct device_attribute dev_attr_fan_fan1_input =
6765 __ATTR(fan1_input, S_IRUGO,
6766 fan_fan1_input_show, NULL);
40ca9fdf 6767
b21a15f6
HMH		 6768/* sysfs fan fan_watchdog (hwmon driver) ------------------------------- */
6769static ssize_t fan_fan_watchdog_show(struct device_driver *drv,
6770 char *buf)
6771{
6772 return snprintf(buf, PAGE_SIZE, "%u\n", fan_watchdog_maxinterval);
18ad7996
HMH		 6773}
6774
b21a15f6
HMH		 6775static ssize_t fan_fan_watchdog_store(struct device_driver *drv,
6776 const char *buf, size_t count)
18ad7996 6777{
b21a15f6
HMH		 6778 unsigned long t;
6779
6780 if (parse_strtoul(buf, 120, &t))
6781 return -EINVAL;
40ca9fdf 6782
ecf2a80a
HMH		 6783 if (!fan_control_allowed)
6784 return -EPERM;
6785
b21a15f6
HMH		 6786 fan_watchdog_maxinterval = t;
6787 fan_watchdog_reset();
40ca9fdf 6788
74a60c0f
HMH		 6789 tpacpi_disclose_usertask("fan_watchdog", "set to %lu\n", t);
6790
b21a15f6
HMH		 6791 return count;
6792}
6793
6794static DRIVER_ATTR(fan_watchdog, S_IWUSR | S_IRUGO,
6795 fan_fan_watchdog_show, fan_fan_watchdog_store);
6796
6797/* --------------------------------------------------------------------- */
6798static struct attribute *fan_attributes[] = {
6799 &dev_attr_fan_pwm1_enable.attr, &dev_attr_fan_pwm1.attr,
6800 &dev_attr_fan_fan1_input.attr,
6801 NULL
6802};
6803
6804static const struct attribute_group fan_attr_group = {
6805 .attrs = fan_attributes,
6806};
6807
6808static int __init fan_init(struct ibm_init_struct *iibm)
6809{
6810 int rc;
6811
74a60c0f
HMH		 6812 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_FAN,
6813 "initializing fan subdriver\n");
b21a15f6
HMH		 6814
6815 mutex_init(&fan_mutex);
6816 fan_status_access_mode = TPACPI_FAN_NONE;
6817 fan_control_access_mode = TPACPI_FAN_WR_NONE;
6818 fan_control_commands = 0;
6819 fan_watchdog_maxinterval = 0;
6820 tp_features.fan_ctrl_status_undef = 0;
6821 fan_control_desired_level = 7;
6822
e0c7dfe7
HMH		 6823 TPACPI_ACPIHANDLE_INIT(fans);
6824 TPACPI_ACPIHANDLE_INIT(gfan);
6825 TPACPI_ACPIHANDLE_INIT(sfan);
b21a15f6
HMH		 6826
6827 if (gfan_handle) {
6828 /* 570, 600e/x, 770e, 770x */
6829 fan_status_access_mode = TPACPI_FAN_RD_ACPI_GFAN;
6830 } else {
6831 /* all other ThinkPads: note that even old-style
6832 * ThinkPad ECs supports the fan control register */
6833 if (likely(acpi_ec_read(fan_status_offset,
6834 &fan_control_initial_status))) {
6835 fan_status_access_mode = TPACPI_FAN_RD_TPEC;
1c2ece75 6836 fan_quirk1_detect();
b21a15f6 6837 } else {
e0c7dfe7 6838 printk(TPACPI_ERR
b21a15f6
HMH		 6839 "ThinkPad ACPI EC access misbehaving, "
6840 "fan status and control unavailable\n");
6841 return 1;
6842 }
6843 }
6844
6845 if (sfan_handle) {
6846 /* 570, 770x-JL */
6847 fan_control_access_mode = TPACPI_FAN_WR_ACPI_SFAN;
6848 fan_control_commands |=
6849 TPACPI_FAN_CMD_LEVEL | TPACPI_FAN_CMD_ENABLE;
6850 } else {
6851 if (!gfan_handle) {
6852 /* gfan without sfan means no fan control */
6853 /* all other models implement TP EC 0x2f control */
6854
6855 if (fans_handle) {
6856 /* X31, X40, X41 */
6857 fan_control_access_mode =
6858 TPACPI_FAN_WR_ACPI_FANS;
6859 fan_control_commands |=
6860 TPACPI_FAN_CMD_SPEED |
6861 TPACPI_FAN_CMD_LEVEL |
6862 TPACPI_FAN_CMD_ENABLE;
6863 } else {
6864 fan_control_access_mode = TPACPI_FAN_WR_TPEC;
6865 fan_control_commands |=
6866 TPACPI_FAN_CMD_LEVEL |
6867 TPACPI_FAN_CMD_ENABLE;
6868 }
fe98a52c 6869 }
b21a15f6 6870 }
18ad7996 6871
74a60c0f
HMH		 6872 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_FAN,
6873 "fan is %s, modes %d, %d\n",
b21a15f6
HMH		 6874 str_supported(fan_status_access_mode != TPACPI_FAN_NONE ||
6875 fan_control_access_mode != TPACPI_FAN_WR_NONE),
6876 fan_status_access_mode, fan_control_access_mode);
1c6a334e 6877
b21a15f6
HMH		 6878 /* fan control master switch */
6879 if (!fan_control_allowed) {
6880 fan_control_access_mode = TPACPI_FAN_WR_NONE;
6881 fan_control_commands = 0;
74a60c0f 6882 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_FAN,
b21a15f6 6883 "fan control features disabled by parameter\n");
18ad7996 6884 }
40ca9fdf 6885
b21a15f6
HMH		 6886 /* update fan_control_desired_level */
6887 if (fan_status_access_mode != TPACPI_FAN_NONE)
6888 fan_get_status_safe(NULL);
fe98a52c 6889
b21a15f6
HMH		 6890 if (fan_status_access_mode != TPACPI_FAN_NONE ||
6891 fan_control_access_mode != TPACPI_FAN_WR_NONE) {
6892 rc = sysfs_create_group(&tpacpi_sensors_pdev->dev.kobj,
6893 &fan_attr_group);
b21a15f6
HMH		 6894 if (rc < 0)
6895 return rc;
9c0a76e1
HMH		 6896
6897 rc = driver_create_file(&tpacpi_hwmon_pdriver.driver,
6898 &driver_attr_fan_watchdog);
6899 if (rc < 0) {
6900 sysfs_remove_group(&tpacpi_sensors_pdev->dev.kobj,
6901 &fan_attr_group);
6902 return rc;
6903 }
b21a15f6
HMH		 6904 return 0;
6905 } else
6906 return 1;
56b6aeb0
HMH		 6907}
6908
b21a15f6 6909static void fan_exit(void)
56b6aeb0 6910{
74a60c0f 6911 vdbg_printk(TPACPI_DBG_EXIT | TPACPI_DBG_FAN,
35ff8b9f 6912 "cancelling any pending fan watchdog tasks\n");
56b6aeb0 6913
b21a15f6
HMH		 6914 /* FIXME: can we really do this unconditionally? */
6915 sysfs_remove_group(&tpacpi_sensors_pdev->dev.kobj, &fan_attr_group);
35ff8b9f
HMH		 6916 driver_remove_file(&tpacpi_hwmon_pdriver.driver,
6917 &driver_attr_fan_watchdog);
40ca9fdf 6918
b21a15f6 6919 cancel_delayed_work(&fan_watchdog_task);
e0e3c061 6920 flush_workqueue(tpacpi_wq);
56b6aeb0
HMH		 6921}
6922
75700e53
HMH		 6923static void fan_suspend(pm_message_t state)
6924{
0081b162
HMH		 6925 int rc;
6926
75700e53
HMH		 6927 if (!fan_control_allowed)
6928 return;
6929
6930 /* Store fan status in cache */
0081b162
HMH		 6931 fan_control_resume_level = 0;
6932 rc = fan_get_status_safe(&fan_control_resume_level);
6933 if (rc < 0)
6934 printk(TPACPI_NOTICE
6935 "failed to read fan level for later "
6936 "restore during resume: %d\n", rc);
6937
6938 /* if it is undefined, don't attempt to restore it.
6939 * KEEP THIS LAST */
75700e53 6940 if (tp_features.fan_ctrl_status_undef)
0081b162 6941 fan_control_resume_level = 0;
75700e53
HMH		 6942}
6943
6944static void fan_resume(void)
6945{
75700e53
HMH		 6946 u8 current_level = 7;
6947 bool do_set = false;
0081b162 6948 int rc;
75700e53
HMH		 6949
6950 /* DSDT *always* updates status on resume */
6951 tp_features.fan_ctrl_status_undef = 0;
6952
75700e53 6953 if (!fan_control_allowed ||
0081b162 6954 !fan_control_resume_level ||
75700e53
HMH		 6955 (fan_get_status_safe(&current_level) < 0))
6956 return;
6957
6958 switch (fan_control_access_mode) {
6959 case TPACPI_FAN_WR_ACPI_SFAN:
0081b162
HMH		 6960 /* never decrease fan level */
6961 do_set = (fan_control_resume_level > current_level);
75700e53
HMH		 6962 break;
6963 case TPACPI_FAN_WR_ACPI_FANS:
6964 case TPACPI_FAN_WR_TPEC:
0081b162
HMH		 6965 /* never decrease fan level, scale is:
6966 * TP_EC_FAN_FULLSPEED > 7 >= TP_EC_FAN_AUTO
6967 *
6968 * We expect the firmware to set either 7 or AUTO, but we
6969 * handle FULLSPEED out of paranoia.
6970 *
6971 * So, we can safely only restore FULLSPEED or 7, anything
6972 * else could slow the fan. Restoring AUTO is useless, at
6973 * best that's exactly what the DSDT already set (it is the
6974 * slower it uses).
6975 *
6976 * Always keep in mind that the DSDT *will* have set the
6977 * fans to what the vendor supposes is the best level. We
6978 * muck with it only to speed the fan up.
6979 */
6980 if (fan_control_resume_level != 7 &&
6981 !(fan_control_resume_level & TP_EC_FAN_FULLSPEED))
6982 return;
6983 else
6984 do_set = !(current_level & TP_EC_FAN_FULLSPEED) &&
6985 (current_level != fan_control_resume_level);
75700e53
HMH		 6986 break;
6987 default:
6988 return;
6989 }
6990 if (do_set) {
6991 printk(TPACPI_NOTICE
6992 "restoring fan level to 0x%02x\n",
0081b162
HMH		 6993 fan_control_resume_level);
6994 rc = fan_set_level_safe(fan_control_resume_level);
6995 if (rc < 0)
6996 printk(TPACPI_NOTICE
6997 "failed to restore fan level: %d\n", rc);
75700e53
HMH		 6998 }
6999}
7000
56b6aeb0
HMH		 7001static int fan_read(char *p)
7002{
7003 int len = 0;
7004 int rc;
7005 u8 status;
7006 unsigned int speed = 0;
7007
7008 switch (fan_status_access_mode) {
efa27145 7009 case TPACPI_FAN_RD_ACPI_GFAN:
56b6aeb0 7010 /* 570, 600e/x, 770e, 770x */
35ff8b9f
HMH		 7011 rc = fan_get_status_safe(&status);
7012 if (rc < 0)
56b6aeb0
HMH		 7013 return rc;
7014
7015 len += sprintf(p + len, "status:\t\t%s\n"
7016 "level:\t\t%d\n",
7017 (status != 0) ? "enabled" : "disabled", status);
7018 break;
7019
efa27145 7020 case TPACPI_FAN_RD_TPEC:
56b6aeb0 7021 /* all except 570, 600e/x, 770e, 770x */
35ff8b9f
HMH		 7022 rc = fan_get_status_safe(&status);
7023 if (rc < 0)
56b6aeb0
HMH		 7024 return rc;
7025
56b6aeb0
HMH		 7026 len += sprintf(p + len, "status:\t\t%s\n",
7027 (status != 0) ? "enabled" : "disabled");
7028
35ff8b9f
HMH		 7029 rc = fan_get_speed(&speed);
7030 if (rc < 0)
56b6aeb0
HMH		 7031 return rc;
7032
7033 len += sprintf(p + len, "speed:\t\t%d\n", speed);
7034
efa27145 7035 if (status & TP_EC_FAN_FULLSPEED)
56b6aeb0
HMH		 7036 /* Disengaged mode takes precedence */
7037 len += sprintf(p + len, "level:\t\tdisengaged\n");
efa27145 7038 else if (status & TP_EC_FAN_AUTO)
56b6aeb0
HMH		 7039 len += sprintf(p + len, "level:\t\tauto\n");
7040 else
7041 len += sprintf(p + len, "level:\t\t%d\n", status);
7042 break;
7043
efa27145 7044 case TPACPI_FAN_NONE:
56b6aeb0
HMH		 7045 default:
7046 len += sprintf(p + len, "status:\t\tnot supported\n");
7047 }
7048
efa27145 7049 if (fan_control_commands & TPACPI_FAN_CMD_LEVEL) {
56b6aeb0
HMH		 7050 len += sprintf(p + len, "commands:\tlevel <level>");
7051
7052 switch (fan_control_access_mode) {
efa27145 7053 case TPACPI_FAN_WR_ACPI_SFAN:
56b6aeb0
HMH		 7054 len += sprintf(p + len, " (<level> is 0-7)\n");
7055 break;
7056
7057 default:
7058 len += sprintf(p + len, " (<level> is 0-7, "
fe98a52c 7059 "auto, disengaged, full-speed)\n");
56b6aeb0
HMH		 7060 break;
7061 }
7062 }
18ad7996 7063
efa27145 7064 if (fan_control_commands & TPACPI_FAN_CMD_ENABLE)
56b6aeb0 7065 len += sprintf(p + len, "commands:\tenable, disable\n"
35ff8b9f
HMH		 7066 "commands:\twatchdog <timeout> (<timeout> "
7067 "is 0 (off), 1-120 (seconds))\n");
1da177e4 7068
efa27145 7069 if (fan_control_commands & TPACPI_FAN_CMD_SPEED)
56b6aeb0
HMH		 7070 len += sprintf(p + len, "commands:\tspeed <speed>"
7071 " (<speed> is 0-65535)\n");
7072
7073 return len;
78f81cc4
BD		 7074}
7075
18ad7996
HMH		 7076static int fan_write_cmd_level(const char *cmd, int *rc)
7077{
7078 int level;
7079
a12095c2 7080 if (strlencmp(cmd, "level auto") == 0)
efa27145 7081 level = TP_EC_FAN_AUTO;
fe98a52c 7082 else if ((strlencmp(cmd, "level disengaged") == 0) |
35ff8b9f 7083 (strlencmp(cmd, "level full-speed") == 0))
efa27145 7084 level = TP_EC_FAN_FULLSPEED;
a12095c2 7085 else if (sscanf(cmd, "level %d", &level) != 1)
18ad7996
HMH		 7086 return 0;
7087
35ff8b9f
HMH		 7088 *rc = fan_set_level_safe(level);
7089 if (*rc == -ENXIO)
e0c7dfe7 7090 printk(TPACPI_ERR "level command accepted for unsupported "
18ad7996 7091 "access mode %d", fan_control_access_mode);
74a60c0f
HMH		 7092 else if (!*rc)
7093 tpacpi_disclose_usertask("procfs fan",
7094 "set level to %d\n", level);
18ad7996
HMH		 7095
7096 return 1;
7097}
7098
7099static int fan_write_cmd_enable(const char *cmd, int *rc)
7100{
7101 if (strlencmp(cmd, "enable") != 0)
7102 return 0;
7103
35ff8b9f
HMH		 7104 *rc = fan_set_enable();
7105 if (*rc == -ENXIO)
e0c7dfe7 7106 printk(TPACPI_ERR "enable command accepted for unsupported "
18ad7996 7107 "access mode %d", fan_control_access_mode);
74a60c0f
HMH		 7108 else if (!*rc)
7109 tpacpi_disclose_usertask("procfs fan", "enable\n");
18ad7996
HMH		 7110
7111 return 1;
7112}
7113
7114static int fan_write_cmd_disable(const char *cmd, int *rc)
7115{
7116 if (strlencmp(cmd, "disable") != 0)
7117 return 0;
7118
35ff8b9f
HMH		 7119 *rc = fan_set_disable();
7120 if (*rc == -ENXIO)
e0c7dfe7 7121 printk(TPACPI_ERR "disable command accepted for unsupported "
18ad7996 7122 "access mode %d", fan_control_access_mode);
74a60c0f
HMH		 7123 else if (!*rc)
7124 tpacpi_disclose_usertask("procfs fan", "disable\n");
18ad7996
HMH		 7125
7126 return 1;
7127}
7128
7129static int fan_write_cmd_speed(const char *cmd, int *rc)
7130{
7131 int speed;
7132
a8b7a662
HMH		 7133 /* TODO:
7134 * Support speed <low> <medium> <high> ? */
7135
18ad7996
HMH		 7136 if (sscanf(cmd, "speed %d", &speed) != 1)
7137 return 0;
7138
35ff8b9f
HMH		 7139 *rc = fan_set_speed(speed);
7140 if (*rc == -ENXIO)
e0c7dfe7 7141 printk(TPACPI_ERR "speed command accepted for unsupported "
18ad7996 7142 "access mode %d", fan_control_access_mode);
74a60c0f
HMH		 7143 else if (!*rc)
7144 tpacpi_disclose_usertask("procfs fan",
7145 "set speed to %d\n", speed);
18ad7996
HMH		 7146
7147 return 1;
7148}
7149
16663a87
HMH		 7150static int fan_write_cmd_watchdog(const char *cmd, int *rc)
7151{
7152 int interval;
7153
7154 if (sscanf(cmd, "watchdog %d", &interval) != 1)
7155 return 0;
7156
7157 if (interval < 0 || interval > 120)
7158 *rc = -EINVAL;
74a60c0f 7159 else {
16663a87 7160 fan_watchdog_maxinterval = interval;
74a60c0f
HMH		 7161 tpacpi_disclose_usertask("procfs fan",
7162 "set watchdog timer to %d\n",
7163 interval);
7164 }
16663a87
HMH		 7165
7166 return 1;
7167}
7168
18ad7996
HMH		 7169static int fan_write(char *buf)
7170{
7171 char *cmd;
7172 int rc = 0;
7173
7174 while (!rc && (cmd = next_cmd(&buf))) {
efa27145 7175 if (!((fan_control_commands & TPACPI_FAN_CMD_LEVEL) &&
18ad7996 7176 fan_write_cmd_level(cmd, &rc)) &&
efa27145 7177 !((fan_control_commands & TPACPI_FAN_CMD_ENABLE) &&
18ad7996 7178 (fan_write_cmd_enable(cmd, &rc) ||
16663a87
HMH		 7179 fan_write_cmd_disable(cmd, &rc) ||
7180 fan_write_cmd_watchdog(cmd, &rc))) &&
efa27145 7181 !((fan_control_commands & TPACPI_FAN_CMD_SPEED) &&
18ad7996
HMH		 7182 fan_write_cmd_speed(cmd, &rc))
7183 )
7184 rc = -EINVAL;
16663a87
HMH		 7185 else if (!rc)
7186 fan_watchdog_reset();
18ad7996
HMH		 7187 }
7188
7189 return rc;
7190}
7191
a5763f22
HMH		 7192static struct ibm_struct fan_driver_data = {
7193 .name = "fan",
7194 .read = fan_read,
7195 .write = fan_write,
7196 .exit = fan_exit,
75700e53
HMH		 7197 .suspend = fan_suspend,
7198 .resume = fan_resume,
a5763f22
HMH		 7199};
7200
56b6aeb0
HMH		 7201/****************************************************************************
7202 ****************************************************************************
7203 *
7204 * Infrastructure
7205 *
7206 ****************************************************************************
7207 ****************************************************************************/
7208
7fd40029
HMH		 7209/* sysfs name ---------------------------------------------------------- */
7210static ssize_t thinkpad_acpi_pdev_name_show(struct device *dev,
7211 struct device_attribute *attr,
7212 char *buf)
7213{
e0c7dfe7 7214 return snprintf(buf, PAGE_SIZE, "%s\n", TPACPI_NAME);
7fd40029
HMH		 7215}
7216
7217static struct device_attribute dev_attr_thinkpad_acpi_pdev_name =
7218 __ATTR(name, S_IRUGO, thinkpad_acpi_pdev_name_show, NULL);
7219
7220/* --------------------------------------------------------------------- */
7221
56b6aeb0 7222/* /proc support */
94954cc6 7223static struct proc_dir_entry *proc_dir;
16663a87 7224
56b6aeb0
HMH		 7225/*
7226 * Module and infrastructure proble, init and exit handling
7227 */
1da177e4 7228
b21a15f6
HMH		 7229static int force_load;
7230
fe08bc4b 7231#ifdef CONFIG_THINKPAD_ACPI_DEBUG
a5763f22 7232static const char * __init str_supported(int is_supported)
fe08bc4b 7233{
a5763f22 7234 static char text_unsupported[] __initdata = "not supported";
fe08bc4b 7235
a5763f22 7236 return (is_supported)? &text_unsupported[4] : &text_unsupported[0];
fe08bc4b
HMH		 7237}
7238#endif /* CONFIG_THINKPAD_ACPI_DEBUG */
7239
b21a15f6
HMH		 7240static void ibm_exit(struct ibm_struct *ibm)
7241{
7242 dbg_printk(TPACPI_DBG_EXIT, "removing %s\n", ibm->name);
7243
7244 list_del_init(&ibm->all_drivers);
7245
7246 if (ibm->flags.acpi_notify_installed) {
7247 dbg_printk(TPACPI_DBG_EXIT,
7248 "%s: acpi_remove_notify_handler\n", ibm->name);
7249 BUG_ON(!ibm->acpi);
7250 acpi_remove_notify_handler(*ibm->acpi->handle,
7251 ibm->acpi->type,
7252 dispatch_acpi_notify);
7253 ibm->flags.acpi_notify_installed = 0;
7254 ibm->flags.acpi_notify_installed = 0;
7255 }
7256
7257 if (ibm->flags.proc_created) {
7258 dbg_printk(TPACPI_DBG_EXIT,
7259 "%s: remove_proc_entry\n", ibm->name);
7260 remove_proc_entry(ibm->name, proc_dir);
7261 ibm->flags.proc_created = 0;
7262 }
7263
7264 if (ibm->flags.acpi_driver_registered) {
7265 dbg_printk(TPACPI_DBG_EXIT,
7266 "%s: acpi_bus_unregister_driver\n", ibm->name);
7267 BUG_ON(!ibm->acpi);
7268 acpi_bus_unregister_driver(ibm->acpi->driver);
7269 kfree(ibm->acpi->driver);
7270 ibm->acpi->driver = NULL;
7271 ibm->flags.acpi_driver_registered = 0;
7272 }
7273
7274 if (ibm->flags.init_called && ibm->exit) {
7275 ibm->exit();
7276 ibm->flags.init_called = 0;
7277 }
7278
7279 dbg_printk(TPACPI_DBG_INIT, "finished removing %s\n", ibm->name);
7280}
f74a27d4 7281
a5763f22 7282static int __init ibm_init(struct ibm_init_struct *iibm)
1da177e4
LT		 7283{
7284 int ret;
a5763f22 7285 struct ibm_struct *ibm = iibm->data;
1da177e4
LT		 7286 struct proc_dir_entry *entry;
7287
a5763f22
HMH		 7288 BUG_ON(ibm == NULL);
7289
7290 INIT_LIST_HEAD(&ibm->all_drivers);
7291
92641177 7292 if (ibm->flags.experimental && !experimental)
1da177e4
LT		 7293 return 0;
7294
fe08bc4b
HMH		 7295 dbg_printk(TPACPI_DBG_INIT,
7296 "probing for %s\n", ibm->name);
7297
a5763f22
HMH		 7298 if (iibm->init) {
7299 ret = iibm->init(iibm);
5fba344c
HMH		 7300 if (ret > 0)
7301 return 0; /* probe failed */
7302 if (ret)
1da177e4 7303 return ret;
a5763f22 7304
92641177 7305 ibm->flags.init_called = 1;
1da177e4
LT		 7306 }
7307
8d376cd6
HMH		 7308 if (ibm->acpi) {
7309 if (ibm->acpi->hid) {
7310 ret = register_tpacpi_subdriver(ibm);
7311 if (ret)
7312 goto err_out;
7313 }
5fba344c 7314
8d376cd6
HMH		 7315 if (ibm->acpi->notify) {
7316 ret = setup_acpi_notify(ibm);
7317 if (ret == -ENODEV) {
e0c7dfe7 7318 printk(TPACPI_NOTICE "disabling subdriver %s\n",
8d376cd6
HMH		 7319 ibm->name);
7320 ret = 0;
7321 goto err_out;
7322 }
7323 if (ret < 0)
7324 goto err_out;
5fba344c 7325 }
5fba344c
HMH		 7326 }
7327
fe08bc4b
HMH		 7328 dbg_printk(TPACPI_DBG_INIT,
7329 "%s installed\n", ibm->name);
7330
78f81cc4
BD		 7331 if (ibm->read) {
7332 entry = create_proc_entry(ibm->name,
7333 S_IFREG | S_IRUGO | S_IWUSR,
7334 proc_dir);
7335 if (!entry) {
e0c7dfe7 7336 printk(TPACPI_ERR "unable to create proc entry %s\n",
78f81cc4 7337 ibm->name);
5fba344c
HMH		 7338 ret = -ENODEV;
7339 goto err_out;
78f81cc4 7340 }
78f81cc4 7341 entry->data = ibm;
8d376cd6 7342 entry->read_proc = &dispatch_procfs_read;
78f81cc4 7343 if (ibm->write)
8d376cd6 7344 entry->write_proc = &dispatch_procfs_write;
92641177 7345 ibm->flags.proc_created = 1;
78f81cc4 7346 }
1da177e4 7347
a5763f22
HMH		 7348 list_add_tail(&ibm->all_drivers, &tpacpi_all_drivers);
7349
1da177e4 7350 return 0;
5fba344c
HMH		 7351
7352err_out:
fe08bc4b
HMH		 7353 dbg_printk(TPACPI_DBG_INIT,
7354 "%s: at error exit path with result %d\n",
7355 ibm->name, ret);
7356
5fba344c
HMH		 7357 ibm_exit(ibm);
7358 return (ret < 0)? ret : 0;
1da177e4
LT		 7359}
7360
56b6aeb0
HMH		 7361/* Probing */
7362
bf20e740
HMH		 7363/* returns 0 - probe ok, or < 0 - probe error.
7364 * Probe ok doesn't mean thinkpad found.
7365 * On error, kfree() cleanup on tp->* is not performed, caller must do it */
7366static int __must_check __init get_thinkpad_model_data(
7367 struct thinkpad_id_data *tp)
1da177e4 7368{
1855256c 7369 const struct dmi_device *dev = NULL;
56b6aeb0 7370 char ec_fw_string[18];
bf20e740 7371 char const *s;
1da177e4 7372
d5a2f2f1 7373 if (!tp)
bf20e740 7374 return -EINVAL;
d5a2f2f1
HMH		 7375
7376 memset(tp, 0, sizeof(*tp));
7377
7378 if (dmi_name_in_vendors("IBM"))
7379 tp->vendor = PCI_VENDOR_ID_IBM;
7380 else if (dmi_name_in_vendors("LENOVO"))
7381 tp->vendor = PCI_VENDOR_ID_LENOVO;
7382 else
bf20e740 7383 return 0;
d5a2f2f1 7384
bf20e740
HMH		 7385 s = dmi_get_system_info(DMI_BIOS_VERSION);
7386 tp->bios_version_str = kstrdup(s, GFP_KERNEL);
7387 if (s && !tp->bios_version_str)
7388 return -ENOMEM;
d5a2f2f1 7389 if (!tp->bios_version_str)
bf20e740 7390 return 0;
d5a2f2f1
HMH		 7391 tp->bios_model = tp->bios_version_str[0]
7392 | (tp->bios_version_str[1] << 8);
7393
56b6aeb0
HMH		 7394 /*
7395 * ThinkPad T23 or newer, A31 or newer, R50e or newer,
7396 * X32 or newer, all Z series; Some models must have an
7397 * up-to-date BIOS or they will not be detected.
7398 *
7399 * See http://thinkwiki.org/wiki/List_of_DMI_IDs
7400 */
7401 while ((dev = dmi_find_device(DMI_DEV_TYPE_OEM_STRING, NULL, dev))) {
7402 if (sscanf(dev->name,
7403 "IBM ThinkPad Embedded Controller -[%17c",
7404 ec_fw_string) == 1) {
7405 ec_fw_string[sizeof(ec_fw_string) - 1] = 0;
7406 ec_fw_string[strcspn(ec_fw_string, " ]")] = 0;
d5a2f2f1
HMH		 7407
7408 tp->ec_version_str = kstrdup(ec_fw_string, GFP_KERNEL);
bf20e740
HMH		 7409 if (!tp->ec_version_str)
7410 return -ENOMEM;
d5a2f2f1
HMH		 7411 tp->ec_model = ec_fw_string[0]
7412 | (ec_fw_string[1] << 8);
7413 break;
78f81cc4 7414 }
1da177e4 7415 }
d5a2f2f1 7416
bf20e740
HMH		 7417 s = dmi_get_system_info(DMI_PRODUCT_VERSION);
7418 if (s && !strnicmp(s, "ThinkPad", 8)) {
7419 tp->model_str = kstrdup(s, GFP_KERNEL);
7420 if (!tp->model_str)
7421 return -ENOMEM;
d5a2f2f1 7422 }
8c74adbc 7423
bf20e740
HMH		 7424 s = dmi_get_system_info(DMI_PRODUCT_NAME);
7425 tp->nummodel_str = kstrdup(s, GFP_KERNEL);
7426 if (s && !tp->nummodel_str)
7427 return -ENOMEM;
7428
7429 return 0;
1da177e4
LT		 7430}
7431
5fba344c
HMH		 7432static int __init probe_for_thinkpad(void)
7433{
7434 int is_thinkpad;
7435
7436 if (acpi_disabled)
7437 return -ENODEV;
7438
7439 /*
7440 * Non-ancient models have better DMI tagging, but very old models
7441 * don't.
7442 */
d5a2f2f1 7443 is_thinkpad = (thinkpad_id.model_str != NULL);
5fba344c
HMH		 7444
7445 /* ec is required because many other handles are relative to it */
e0c7dfe7 7446 TPACPI_ACPIHANDLE_INIT(ec);
5fba344c
HMH		 7447 if (!ec_handle) {
7448 if (is_thinkpad)
e0c7dfe7 7449 printk(TPACPI_ERR
5fba344c
HMH		 7450 "Not yet supported ThinkPad detected!\n");
7451 return -ENODEV;
7452 }
7453
0dcef77c
HMH		 7454 /*
7455 * Risks a regression on very old machines, but reduces potential
7456 * false positives a damn great deal
7457 */
7458 if (!is_thinkpad)
d5a2f2f1 7459 is_thinkpad = (thinkpad_id.vendor == PCI_VENDOR_ID_IBM);
0dcef77c
HMH		 7460
7461 if (!is_thinkpad && !force_load)
7462 return -ENODEV;
7463
5fba344c
HMH		 7464 return 0;
7465}
7466
7467
56b6aeb0 7468/* Module init, exit, parameters */
1da177e4 7469
a5763f22
HMH		 7470static struct ibm_init_struct ibms_init[] __initdata = {
7471 {
7472 .init = thinkpad_acpi_driver_init,
7473 .data = &thinkpad_acpi_driver_data,
7474 },
7475 {
7476 .init = hotkey_init,
7477 .data = &hotkey_driver_data,
7478 },
7479 {
7480 .init = bluetooth_init,
7481 .data = &bluetooth_driver_data,
7482 },
7483 {
7484 .init = wan_init,
7485 .data = &wan_driver_data,
7486 },
0045c0aa
HMH		 7487 {
7488 .init = uwb_init,
7489 .data = &uwb_driver_data,
7490 },
d7c1d17d 7491#ifdef CONFIG_THINKPAD_ACPI_VIDEO
a5763f22
HMH		 7492 {
7493 .init = video_init,
7494 .data = &video_driver_data,
7495 },
d7c1d17d 7496#endif
a5763f22
HMH		 7497 {
7498 .init = light_init,
7499 .data = &light_driver_data,
7500 },
7501#ifdef CONFIG_THINKPAD_ACPI_DOCK
7502 {
7503 .init = dock_init,
7504 .data = &dock_driver_data[0],
7505 },
7506 {
d94a7f16 7507 .init = dock_init2,
a5763f22
HMH		 7508 .data = &dock_driver_data[1],
7509 },
7510#endif
7511#ifdef CONFIG_THINKPAD_ACPI_BAY
7512 {
7513 .init = bay_init,
7514 .data = &bay_driver_data,
7515 },
7516#endif
7517 {
7518 .init = cmos_init,
7519 .data = &cmos_driver_data,
7520 },
7521 {
7522 .init = led_init,
7523 .data = &led_driver_data,
7524 },
7525 {
7526 .init = beep_init,
7527 .data = &beep_driver_data,
7528 },
7529 {
7530 .init = thermal_init,
7531 .data = &thermal_driver_data,
7532 },
7533 {
7534 .data = &ecdump_driver_data,
7535 },
7536 {
7537 .init = brightness_init,
7538 .data = &brightness_driver_data,
7539 },
7540 {
7541 .data = &volume_driver_data,
7542 },
7543 {
7544 .init = fan_init,
7545 .data = &fan_driver_data,
7546 },
7547};
7548
3945ac36 7549static int __init set_ibm_param(const char *val, struct kernel_param *kp)
1da177e4
LT		 7550{
7551 unsigned int i;
a5763f22 7552 struct ibm_struct *ibm;
1da177e4 7553
59f91ff1
HMH		 7554 if (!kp || !kp->name || !val)
7555 return -EINVAL;
7556
a5763f22
HMH		 7557 for (i = 0; i < ARRAY_SIZE(ibms_init); i++) {
7558 ibm = ibms_init[i].data;
59f91ff1
HMH		 7559 WARN_ON(ibm == NULL);
7560
7561 if (!ibm || !ibm->name)
7562 continue;
a5763f22
HMH		 7563
7564 if (strcmp(ibm->name, kp->name) == 0 && ibm->write) {
7565 if (strlen(val) > sizeof(ibms_init[i].param) - 2)
78f81cc4 7566 return -ENOSPC;
a5763f22
HMH		 7567 strcpy(ibms_init[i].param, val);
7568 strcat(ibms_init[i].param, ",");
78f81cc4
BD		 7569 return 0;
7570 }
a5763f22 7571 }
1da177e4 7572
1da177e4
LT		 7573 return -EINVAL;
7574}
7575
56b6aeb0 7576module_param(experimental, int, 0);
f68080f8 7577MODULE_PARM_DESC(experimental,
35ff8b9f 7578 "Enables experimental features when non-zero");
56b6aeb0 7579
132ce091 7580module_param_named(debug, dbg_level, uint, 0);
f68080f8 7581MODULE_PARM_DESC(debug, "Sets debug level bit-mask");
132ce091 7582
86cc9445 7583module_param(force_load, bool, 0);
f68080f8 7584MODULE_PARM_DESC(force_load,
35ff8b9f
HMH		 7585 "Attempts to load the driver even on a "
7586 "mis-identified ThinkPad when true");
0dcef77c 7587
86cc9445 7588module_param_named(fan_control, fan_control_allowed, bool, 0);
f68080f8 7589MODULE_PARM_DESC(fan_control,
35ff8b9f 7590 "Enables setting fan parameters features when true");
ecf2a80a 7591
0e501834 7592module_param_named(brightness_mode, brightness_mode, uint, 0);
f68080f8 7593MODULE_PARM_DESC(brightness_mode,
35ff8b9f 7594 "Selects brightness control strategy: "
0e501834 7595 "0=auto, 1=EC, 2=UCMS, 3=EC+NVRAM");
24d3b774 7596
87cc537a 7597module_param(brightness_enable, uint, 0);
f68080f8 7598MODULE_PARM_DESC(brightness_enable,
35ff8b9f 7599 "Enables backlight control when 1, disables when 0");
87cc537a 7600
ff80f137 7601module_param(hotkey_report_mode, uint, 0);
f68080f8 7602MODULE_PARM_DESC(hotkey_report_mode,
35ff8b9f
HMH		 7603 "used for backwards compatibility with userspace, "
7604 "see documentation");
ff80f137 7605
e0c7dfe7 7606#define TPACPI_PARAM(feature) \
f68080f8 7607 module_param_call(feature, set_ibm_param, NULL, NULL, 0); \
cbb14842 7608 MODULE_PARM_DESC(feature, "Simulates thinkpad-acpi procfs command " \
35ff8b9f 7609 "at module load, see documentation")
1da177e4 7610
e0c7dfe7
HMH		 7611TPACPI_PARAM(hotkey);
7612TPACPI_PARAM(bluetooth);
7613TPACPI_PARAM(video);
7614TPACPI_PARAM(light);
85998248 7615#ifdef CONFIG_THINKPAD_ACPI_DOCK
e0c7dfe7 7616TPACPI_PARAM(dock);
63e5f248 7617#endif
85998248 7618#ifdef CONFIG_THINKPAD_ACPI_BAY
e0c7dfe7 7619TPACPI_PARAM(bay);
85998248 7620#endif /* CONFIG_THINKPAD_ACPI_BAY */
e0c7dfe7
HMH		 7621TPACPI_PARAM(cmos);
7622TPACPI_PARAM(led);
7623TPACPI_PARAM(beep);
7624TPACPI_PARAM(ecdump);
7625TPACPI_PARAM(brightness);
7626TPACPI_PARAM(volume);
7627TPACPI_PARAM(fan);
78f81cc4 7628
a73f3091
HMH		 7629#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
7630module_param(dbg_wlswemul, uint, 0);
7631MODULE_PARM_DESC(dbg_wlswemul, "Enables WLSW emulation");
7632module_param_named(wlsw_state, tpacpi_wlsw_emulstate, bool, 0);
7633MODULE_PARM_DESC(wlsw_state,
7634 "Initial state of the emulated WLSW switch");
7635
7636module_param(dbg_bluetoothemul, uint, 0);
7637MODULE_PARM_DESC(dbg_bluetoothemul, "Enables bluetooth switch emulation");
7638module_param_named(bluetooth_state, tpacpi_bluetooth_emulstate, bool, 0);
7639MODULE_PARM_DESC(bluetooth_state,
7640 "Initial state of the emulated bluetooth switch");
7641
7642module_param(dbg_wwanemul, uint, 0);
7643MODULE_PARM_DESC(dbg_wwanemul, "Enables WWAN switch emulation");
7644module_param_named(wwan_state, tpacpi_wwan_emulstate, bool, 0);
7645MODULE_PARM_DESC(wwan_state,
7646 "Initial state of the emulated WWAN switch");
0045c0aa
HMH		 7647
7648module_param(dbg_uwbemul, uint, 0);
7649MODULE_PARM_DESC(dbg_uwbemul, "Enables UWB switch emulation");
7650module_param_named(uwb_state, tpacpi_uwb_emulstate, bool, 0);
7651MODULE_PARM_DESC(uwb_state,
7652 "Initial state of the emulated UWB switch");
a73f3091
HMH		 7653#endif
7654
b21a15f6
HMH		 7655static void thinkpad_acpi_module_exit(void)
7656{
7657 struct ibm_struct *ibm, *itmp;
7658
7659 tpacpi_lifecycle = TPACPI_LIFE_EXITING;
7660
7661 list_for_each_entry_safe_reverse(ibm, itmp,
7662 &tpacpi_all_drivers,
7663 all_drivers) {
7664 ibm_exit(ibm);
7665 }
7666
7667 dbg_printk(TPACPI_DBG_INIT, "finished subdriver exit path...\n");
7668
7669 if (tpacpi_inputdev) {
7670 if (tp_features.input_device_registered)
7671 input_unregister_device(tpacpi_inputdev);
7672 else
7673 input_free_device(tpacpi_inputdev);
7674 }
7675
7676 if (tpacpi_hwmon)
7677 hwmon_device_unregister(tpacpi_hwmon);
7678
7679 if (tp_features.sensors_pdev_attrs_registered)
7680 device_remove_file(&tpacpi_sensors_pdev->dev,
7681 &dev_attr_thinkpad_acpi_pdev_name);
7682 if (tpacpi_sensors_pdev)
7683 platform_device_unregister(tpacpi_sensors_pdev);
7684 if (tpacpi_pdev)
7685 platform_device_unregister(tpacpi_pdev);
7686
7687 if (tp_features.sensors_pdrv_attrs_registered)
7688 tpacpi_remove_driver_attributes(&tpacpi_hwmon_pdriver.driver);
7689 if (tp_features.platform_drv_attrs_registered)
7690 tpacpi_remove_driver_attributes(&tpacpi_pdriver.driver);
7691
7692 if (tp_features.sensors_pdrv_registered)
7693 platform_driver_unregister(&tpacpi_hwmon_pdriver);
7694
7695 if (tp_features.platform_drv_registered)
7696 platform_driver_unregister(&tpacpi_pdriver);
7697
7698 if (proc_dir)
e0c7dfe7 7699 remove_proc_entry(TPACPI_PROC_DIR, acpi_root_dir);
b21a15f6 7700
e0e3c061
HMH		 7701 if (tpacpi_wq)
7702 destroy_workqueue(tpacpi_wq);
7703
b21a15f6
HMH		 7704 kfree(thinkpad_id.bios_version_str);
7705 kfree(thinkpad_id.ec_version_str);
7706 kfree(thinkpad_id.model_str);
7707}
7708
f74a27d4 7709
1def7115 7710static int __init thinkpad_acpi_module_init(void)
1da177e4
LT		 7711{
7712 int ret, i;
7713
8fef502e
HMH		 7714 tpacpi_lifecycle = TPACPI_LIFE_INIT;
7715
ff80f137
HMH		 7716 /* Parameter checking */
7717 if (hotkey_report_mode > 2)
7718 return -EINVAL;
7719
54ae1501 7720 /* Driver-level probe */
d5a2f2f1 7721
bf20e740
HMH		 7722 ret = get_thinkpad_model_data(&thinkpad_id);
7723 if (ret) {
7724 printk(TPACPI_ERR
7725 "unable to get DMI data: %d\n", ret);
7726 thinkpad_acpi_module_exit();
7727 return ret;
7728 }
5fba344c 7729 ret = probe_for_thinkpad();
d5a2f2f1
HMH		 7730 if (ret) {
7731 thinkpad_acpi_module_exit();
5fba344c 7732 return ret;
d5a2f2f1 7733 }
1da177e4 7734
54ae1501 7735 /* Driver initialization */
d5a2f2f1 7736
e0c7dfe7
HMH		 7737 TPACPI_ACPIHANDLE_INIT(ecrd);
7738 TPACPI_ACPIHANDLE_INIT(ecwr);
1da177e4 7739
e0e3c061
HMH		 7740 tpacpi_wq = create_singlethread_workqueue(TPACPI_WORKQUEUE_NAME);
7741 if (!tpacpi_wq) {
7742 thinkpad_acpi_module_exit();
7743 return -ENOMEM;
7744 }
7745
e0c7dfe7 7746 proc_dir = proc_mkdir(TPACPI_PROC_DIR, acpi_root_dir);
1da177e4 7747 if (!proc_dir) {
35ff8b9f
HMH		 7748 printk(TPACPI_ERR
7749 "unable to create proc dir " TPACPI_PROC_DIR);
1def7115 7750 thinkpad_acpi_module_exit();
1da177e4
LT		 7751 return -ENODEV;
7752 }
78f81cc4 7753
54ae1501
HMH		 7754 ret = platform_driver_register(&tpacpi_pdriver);
7755 if (ret) {
35ff8b9f
HMH		 7756 printk(TPACPI_ERR
7757 "unable to register main platform driver\n");
54ae1501
HMH		 7758 thinkpad_acpi_module_exit();
7759 return ret;
7760 }
ac36393d
HMH		 7761 tp_features.platform_drv_registered = 1;
7762
7fd40029
HMH		 7763 ret = platform_driver_register(&tpacpi_hwmon_pdriver);
7764 if (ret) {
35ff8b9f
HMH		 7765 printk(TPACPI_ERR
7766 "unable to register hwmon platform driver\n");
7fd40029
HMH		 7767 thinkpad_acpi_module_exit();
7768 return ret;
7769 }
7770 tp_features.sensors_pdrv_registered = 1;
7771
176750d6 7772 ret = tpacpi_create_driver_attributes(&tpacpi_pdriver.driver);
2369cc94
HMH		 7773 if (!ret) {
7774 tp_features.platform_drv_attrs_registered = 1;
35ff8b9f
HMH		 7775 ret = tpacpi_create_driver_attributes(
7776 &tpacpi_hwmon_pdriver.driver);
2369cc94 7777 }
176750d6 7778 if (ret) {
35ff8b9f
HMH		 7779 printk(TPACPI_ERR
7780 "unable to create sysfs driver attributes\n");
176750d6
HMH		 7781 thinkpad_acpi_module_exit();
7782 return ret;
7783 }
2369cc94 7784 tp_features.sensors_pdrv_attrs_registered = 1;
176750d6 7785
54ae1501
HMH		 7786
7787 /* Device initialization */
e0c7dfe7 7788 tpacpi_pdev = platform_device_register_simple(TPACPI_DRVR_NAME, -1,
54ae1501
HMH		 7789 NULL, 0);
7790 if (IS_ERR(tpacpi_pdev)) {
7791 ret = PTR_ERR(tpacpi_pdev);
7792 tpacpi_pdev = NULL;
e0c7dfe7 7793 printk(TPACPI_ERR "unable to register platform device\n");
54ae1501
HMH		 7794 thinkpad_acpi_module_exit();
7795 return ret;
7796 }
7fd40029 7797 tpacpi_sensors_pdev = platform_device_register_simple(
35ff8b9f
HMH		 7798 TPACPI_HWMON_DRVR_NAME,
7799 -1, NULL, 0);
7fd40029
HMH		 7800 if (IS_ERR(tpacpi_sensors_pdev)) {
7801 ret = PTR_ERR(tpacpi_sensors_pdev);
7802 tpacpi_sensors_pdev = NULL;
35ff8b9f
HMH		 7803 printk(TPACPI_ERR
7804 "unable to register hwmon platform device\n");
7fd40029
HMH		 7805 thinkpad_acpi_module_exit();
7806 return ret;
7807 }
7808 ret = device_create_file(&tpacpi_sensors_pdev->dev,
7809 &dev_attr_thinkpad_acpi_pdev_name);
7810 if (ret) {
e0c7dfe7 7811 printk(TPACPI_ERR
35ff8b9f 7812 "unable to create sysfs hwmon device attributes\n");
7fd40029
HMH		 7813 thinkpad_acpi_module_exit();
7814 return ret;
7815 }
7816 tp_features.sensors_pdev_attrs_registered = 1;
7817 tpacpi_hwmon = hwmon_device_register(&tpacpi_sensors_pdev->dev);
54ae1501
HMH		 7818 if (IS_ERR(tpacpi_hwmon)) {
7819 ret = PTR_ERR(tpacpi_hwmon);
7820 tpacpi_hwmon = NULL;
e0c7dfe7 7821 printk(TPACPI_ERR "unable to register hwmon device\n");
54ae1501
HMH		 7822 thinkpad_acpi_module_exit();
7823 return ret;
7824 }
8523ed6f 7825 mutex_init(&tpacpi_inputdev_send_mutex);
7f5d1cd6
HMH		 7826 tpacpi_inputdev = input_allocate_device();
7827 if (!tpacpi_inputdev) {
e0c7dfe7 7828 printk(TPACPI_ERR "unable to allocate input device\n");
7f5d1cd6
HMH		 7829 thinkpad_acpi_module_exit();
7830 return -ENOMEM;
7831 } else {
7832 /* Prepare input device, but don't register */
7833 tpacpi_inputdev->name = "ThinkPad Extra Buttons";
e0c7dfe7 7834 tpacpi_inputdev->phys = TPACPI_DRVR_NAME "/input0";
7f5d1cd6 7835 tpacpi_inputdev->id.bustype = BUS_HOST;
edf0e0e5
HMH		 7836 tpacpi_inputdev->id.vendor = (thinkpad_id.vendor) ?
7837 thinkpad_id.vendor :
7838 PCI_VENDOR_ID_IBM;
7f5d1cd6
HMH		 7839 tpacpi_inputdev->id.product = TPACPI_HKEY_INPUT_PRODUCT;
7840 tpacpi_inputdev->id.version = TPACPI_HKEY_INPUT_VERSION;
7841 }
a5763f22
HMH		 7842 for (i = 0; i < ARRAY_SIZE(ibms_init); i++) {
7843 ret = ibm_init(&ibms_init[i]);
7844 if (ret >= 0 && *ibms_init[i].param)
7845 ret = ibms_init[i].data->write(ibms_init[i].param);
1da177e4 7846 if (ret < 0) {
1def7115 7847 thinkpad_acpi_module_exit();
1da177e4
LT		 7848 return ret;
7849 }
7850 }
7f5d1cd6
HMH		 7851 ret = input_register_device(tpacpi_inputdev);
7852 if (ret < 0) {
e0c7dfe7 7853 printk(TPACPI_ERR "unable to register input device\n");
7f5d1cd6
HMH		 7854 thinkpad_acpi_module_exit();
7855 return ret;
7856 } else {
7857 tp_features.input_device_registered = 1;
7858 }
1da177e4 7859
8fef502e 7860 tpacpi_lifecycle = TPACPI_LIFE_RUNNING;
1da177e4
LT		 7861 return 0;
7862}
7863
95e57ab2
HMH		 7864MODULE_ALIAS(TPACPI_DRVR_SHORTNAME);
7865
f68080f8
HMH		 7866/*
7867 * DMI matching for module autoloading
7868 *
7869 * See http://thinkwiki.org/wiki/List_of_DMI_IDs
7870 * See http://thinkwiki.org/wiki/BIOS_Upgrade_Downloads
7871 *
7872 * Only models listed in thinkwiki will be supported, so add yours
7873 * if it is not there yet.
7874 */
7875#define IBM_BIOS_MODULE_ALIAS(__type) \
b36a50f9 7876 MODULE_ALIAS("dmi:bvnIBM:bvr" __type "ET??WW*")
f68080f8
HMH		 7877
7878/* Non-ancient thinkpads */
7879MODULE_ALIAS("dmi:bvnIBM:*:svnIBM:*:pvrThinkPad*:rvnIBM:*");
7880MODULE_ALIAS("dmi:bvnLENOVO:*:svnLENOVO:*:pvrThinkPad*:rvnLENOVO:*");
7881
7882/* Ancient thinkpad BIOSes have to be identified by
7883 * BIOS type or model number, and there are far less
7884 * BIOS types than model numbers... */
b36a50f9
MCS		 7885IBM_BIOS_MODULE_ALIAS("I[BDHIMNOTWVYZ]");
7886IBM_BIOS_MODULE_ALIAS("1[0368A-GIKM-PST]");
7887IBM_BIOS_MODULE_ALIAS("K[UX-Z]");
f68080f8
HMH		 7888
7889MODULE_AUTHOR("Borislav Deianov, Henrique de Moraes Holschuh");
e0c7dfe7
HMH		 7890MODULE_DESCRIPTION(TPACPI_DESC);
7891MODULE_VERSION(TPACPI_VERSION);
f68080f8
HMH		 7892MODULE_LICENSE("GPL");
7893
1def7115
HMH		 7894module_init(thinkpad_acpi_module_init);
7895module_exit(thinkpad_acpi_module_exit);
Linux kernel - Deliverables
This page took 0.95208 seconds and 5 git commands to generate.