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thinkpad-acpi: enhanced debugging messages for the fan subdriver
[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
0c78039f 195
35ff8b9f
HMH		 196#define onoff(status, bit) ((status) & (1 << (bit)) ? "on" : "off")
197#define enabled(status, bit) ((status) & (1 << (bit)) ? "enabled" : "disabled")
198#define strlencmp(a, b) (strncmp((a), (b), strlen(b)))
0c78039f 199
0c78039f
HMH		 200
201/****************************************************************************
b21a15f6 202 * Driver-wide structs and misc. variables
0c78039f
HMH		 203 */
204
205struct ibm_struct;
206
207struct tp_acpi_drv_struct {
208 const struct acpi_device_id *hid;
209 struct acpi_driver *driver;
210
211 void (*notify) (struct ibm_struct *, u32);
212 acpi_handle *handle;
213 u32 type;
214 struct acpi_device *device;
215};
216
217struct ibm_struct {
218 char *name;
219
220 int (*read) (char *);
221 int (*write) (char *);
222 void (*exit) (void);
223 void (*resume) (void);
083f1760 224 void (*suspend) (pm_message_t state);
90d9d3c7 225 void (*shutdown) (void);
0c78039f
HMH		 226
227 struct list_head all_drivers;
228
229 struct tp_acpi_drv_struct *acpi;
230
231 struct {
232 u8 acpi_driver_registered:1;
233 u8 acpi_notify_installed:1;
234 u8 proc_created:1;
235 u8 init_called:1;
236 u8 experimental:1;
237 } flags;
238};
239
240struct ibm_init_struct {
241 char param[32];
242
243 int (*init) (struct ibm_init_struct *);
244 struct ibm_struct *data;
245};
246
247static struct {
248#ifdef CONFIG_THINKPAD_ACPI_BAY
249 u32 bay_status:1;
250 u32 bay_eject:1;
251 u32 bay_status2:1;
252 u32 bay_eject2:1;
253#endif
254 u32 bluetooth:1;
255 u32 hotkey:1;
256 u32 hotkey_mask:1;
257 u32 hotkey_wlsw:1;
6c231bd5 258 u32 hotkey_tablet:1;
0c78039f
HMH		 259 u32 light:1;
260 u32 light_status:1;
261 u32 bright_16levels:1;
b5972796 262 u32 bright_acpimode:1;
0c78039f 263 u32 wan:1;
0045c0aa 264 u32 uwb:1;
0c78039f
HMH		 265 u32 fan_ctrl_status_undef:1;
266 u32 input_device_registered:1;
267 u32 platform_drv_registered:1;
268 u32 platform_drv_attrs_registered:1;
269 u32 sensors_pdrv_registered:1;
270 u32 sensors_pdrv_attrs_registered:1;
271 u32 sensors_pdev_attrs_registered:1;
272 u32 hotkey_poll_active:1;
273} tp_features;
274
92889022
HMH		 275static struct {
276 u16 hotkey_mask_ff:1;
2d5e94d7 277 u16 bright_cmos_ec_unsync:1;
92889022
HMH		 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
2586d566
HMH		 2949static void hotkey_enabledisable_warn(void)
2950{
2951 tpacpi_log_usertask("procfs hotkey enable/disable");
2952 WARN(1, TPACPI_WARN
2953 "hotkey enable/disable functionality has been "
2954 "removed from the driver. Hotkeys are always enabled.\n");
2955}
2956
78f81cc4 2957static int hotkey_write(char *buf)
1da177e4 2958{
2586d566 2959 int res;
ae92bd17 2960 u32 mask;
1da177e4 2961 char *cmd;
1da177e4 2962
d8fd94d9 2963 if (!tp_features.hotkey)
1da177e4
LT		 2964 return -ENODEV;
2965
7646ea88 2966 if (mutex_lock_killable(&hotkey_mutex))
fc589a3c 2967 return -ERESTARTSYS;
40ca9fdf 2968
b2c985e7 2969 mask = hotkey_mask;
78f81cc4 2970
40ca9fdf 2971 res = 0;
1da177e4
LT		 2972 while ((cmd = next_cmd(&buf))) {
2973 if (strlencmp(cmd, "enable") == 0) {
2586d566 2974 hotkey_enabledisable_warn();
1da177e4 2975 } else if (strlencmp(cmd, "disable") == 0) {
2586d566
HMH		 2976 hotkey_enabledisable_warn();
2977 res = -EPERM;
1da177e4 2978 } else if (strlencmp(cmd, "reset") == 0) {
78f81cc4 2979 mask = hotkey_orig_mask;
1da177e4
LT		 2980 } else if (sscanf(cmd, "0x%x", &mask) == 1) {
2981 /* mask set */
2982 } else if (sscanf(cmd, "%x", &mask) == 1) {
2983 /* mask set */
40ca9fdf
HMH		 2984 } else {
2985 res = -EINVAL;
2986 goto errexit;
2987 }
1da177e4 2988 }
56e2c200
HMH		 2989
2990 if (!res)
2991 tpacpi_disclose_usertask("procfs hotkey",
2992 "set mask to 0x%08x\n", mask);
2993
b2c985e7
HMH		 2994 if (!res && mask != hotkey_mask)
2995 res = hotkey_mask_set(mask);
1da177e4 2996
40ca9fdf
HMH		 2997errexit:
2998 mutex_unlock(&hotkey_mutex);
2999 return res;
78f81cc4 3000}
1da177e4 3001
1ba90e3a 3002static const struct acpi_device_id ibm_htk_device_ids[] = {
e0c7dfe7 3003 {TPACPI_ACPI_HKEY_HID, 0},
1ba90e3a
TR		 3004 {"", 0},
3005};
3006
8d376cd6 3007static struct tp_acpi_drv_struct ibm_hotkey_acpidriver = {
1ba90e3a 3008 .hid = ibm_htk_device_ids,
8d376cd6
HMH		 3009 .notify = hotkey_notify,
3010 .handle = &hkey_handle,
3011 .type = ACPI_DEVICE_NOTIFY,
3012};
3013
a5763f22
HMH		 3014static struct ibm_struct hotkey_driver_data = {
3015 .name = "hotkey",
a5763f22
HMH		 3016 .read = hotkey_read,
3017 .write = hotkey_write,
3018 .exit = hotkey_exit,
5c29d58f 3019 .resume = hotkey_resume,
a713b4d7 3020 .suspend = hotkey_suspend,
8d376cd6 3021 .acpi = &ibm_hotkey_acpidriver,
a5763f22
HMH		 3022};
3023
56b6aeb0
HMH		 3024/*************************************************************************
3025 * Bluetooth subdriver
3026 */
1da177e4 3027
f74a27d4
HMH		 3028enum {
3029 /* ACPI GBDC/SBDC bits */
3030 TP_ACPI_BLUETOOTH_HWPRESENT = 0x01, /* Bluetooth hw available */
3031 TP_ACPI_BLUETOOTH_RADIOSSW = 0x02, /* Bluetooth radio enabled */
153f8220
HMH		 3032 TP_ACPI_BLUETOOTH_RESUMECTRL = 0x04, /* Bluetooth state at resume:
3033 off / last state */
3034};
3035
3036enum {
3037 /* ACPI \BLTH commands */
3038 TP_ACPI_BLTH_GET_ULTRAPORT_ID = 0x00, /* Get Ultraport BT ID */
3039 TP_ACPI_BLTH_GET_PWR_ON_RESUME = 0x01, /* Get power-on-resume state */
3040 TP_ACPI_BLTH_PWR_ON_ON_RESUME = 0x02, /* Resume powered on */
3041 TP_ACPI_BLTH_PWR_OFF_ON_RESUME = 0x03, /* Resume powered off */
3042 TP_ACPI_BLTH_SAVE_STATE = 0x05, /* Save state for S4/S5 */
f74a27d4
HMH		 3043};
3044
bee4cd9b
HMH		 3045#define TPACPI_RFK_BLUETOOTH_SW_NAME "tpacpi_bluetooth_sw"
3046
0e74dc26
HMH		 3047static struct rfkill *tpacpi_bluetooth_rfkill;
3048
153f8220
HMH		 3049static void bluetooth_suspend(pm_message_t state)
3050{
3051 /* Try to make sure radio will resume powered off */
bee4cd9b
HMH		 3052 if (!acpi_evalf(NULL, NULL, "\\BLTH", "vd",
3053 TP_ACPI_BLTH_PWR_OFF_ON_RESUME))
3054 vdbg_printk(TPACPI_DBG_RFKILL,
3055 "bluetooth power down on resume request failed\n");
153f8220
HMH		 3056}
3057
07431ec8
HMH		 3058static int bluetooth_get_radiosw(void)
3059{
3060 int status;
3061
3062 if (!tp_features.bluetooth)
3063 return -ENODEV;
3064
133ec3bd
HMH		 3065 /* WLSW overrides bluetooth in firmware/hardware, reflect that */
3066 if (tp_features.hotkey_wlsw && !hotkey_get_wlsw(&status) && !status)
0e74dc26 3067 return RFKILL_STATE_HARD_BLOCKED;
133ec3bd 3068
a73f3091
HMH		 3069#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
3070 if (dbg_bluetoothemul)
3071 return (tpacpi_bluetooth_emulstate) ?
3072 RFKILL_STATE_UNBLOCKED : RFKILL_STATE_SOFT_BLOCKED;
3073#endif
3074
07431ec8
HMH		 3075 if (!acpi_evalf(hkey_handle, &status, "GBDC", "d"))
3076 return -EIO;
3077
0e74dc26
HMH		 3078 return ((status & TP_ACPI_BLUETOOTH_RADIOSSW) != 0) ?
3079 RFKILL_STATE_UNBLOCKED : RFKILL_STATE_SOFT_BLOCKED;
07431ec8
HMH		 3080}
3081
0e74dc26
HMH		 3082static void bluetooth_update_rfk(void)
3083{
3084 int status;
3085
3086 if (!tpacpi_bluetooth_rfkill)
3087 return;
3088
3089 status = bluetooth_get_radiosw();
3090 if (status < 0)
3091 return;
3092 rfkill_force_state(tpacpi_bluetooth_rfkill, status);
bee4cd9b
HMH		 3093
3094 vdbg_printk(TPACPI_DBG_RFKILL,
3095 "forced rfkill state to %d\n",
3096 status);
0e74dc26
HMH		 3097}
3098
3099static int bluetooth_set_radiosw(int radio_on, int update_rfk)
07431ec8
HMH		 3100{
3101 int status;
3102
3103 if (!tp_features.bluetooth)
3104 return -ENODEV;
3105
133ec3bd
HMH		 3106 /* WLSW overrides bluetooth in firmware/hardware, but there is no
3107 * reason to risk weird behaviour. */
3108 if (tp_features.hotkey_wlsw && !hotkey_get_wlsw(&status) && !status
3109 && radio_on)
3110 return -EPERM;
3111
bee4cd9b
HMH		 3112 vdbg_printk(TPACPI_DBG_RFKILL,
3113 "will %s bluetooth\n", radio_on ? "enable" : "disable");
3114
a73f3091
HMH		 3115#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
3116 if (dbg_bluetoothemul) {
3117 tpacpi_bluetooth_emulstate = !!radio_on;
3118 if (update_rfk)
3119 bluetooth_update_rfk();
3120 return 0;
3121 }
3122#endif
3123
153f8220 3124 /* We make sure to keep TP_ACPI_BLUETOOTH_RESUMECTRL off */
07431ec8 3125 if (radio_on)
153f8220 3126 status = TP_ACPI_BLUETOOTH_RADIOSSW;
07431ec8 3127 else
153f8220 3128 status = 0;
07431ec8
HMH		 3129 if (!acpi_evalf(hkey_handle, NULL, "SBDC", "vd", status))
3130 return -EIO;
3131
0e74dc26
HMH		 3132 if (update_rfk)
3133 bluetooth_update_rfk();
3134
07431ec8
HMH		 3135 return 0;
3136}
f74a27d4 3137
d3a6ade4
HMH		 3138/* sysfs bluetooth enable ---------------------------------------------- */
3139static ssize_t bluetooth_enable_show(struct device *dev,
3140 struct device_attribute *attr,
3141 char *buf)
3142{
3143 int status;
3144
73a94d86
HMH		 3145 printk_deprecated_rfkill_attribute("bluetooth_enable");
3146
d3a6ade4
HMH		 3147 status = bluetooth_get_radiosw();
3148 if (status < 0)
3149 return status;
3150
0e74dc26
HMH		 3151 return snprintf(buf, PAGE_SIZE, "%d\n",
3152 (status == RFKILL_STATE_UNBLOCKED) ? 1 : 0);
d3a6ade4
HMH		 3153}
3154
3155static ssize_t bluetooth_enable_store(struct device *dev,
3156 struct device_attribute *attr,
3157 const char *buf, size_t count)
3158{
3159 unsigned long t;
3160 int res;
3161
73a94d86
HMH		 3162 printk_deprecated_rfkill_attribute("bluetooth_enable");
3163
d3a6ade4
HMH		 3164 if (parse_strtoul(buf, 1, &t))
3165 return -EINVAL;
3166
bee4cd9b
HMH		 3167 tpacpi_disclose_usertask("bluetooth_enable", "set to %ld\n", t);
3168
0e74dc26 3169 res = bluetooth_set_radiosw(t, 1);
d3a6ade4
HMH		 3170
3171 return (res) ? res : count;
3172}
3173
3174static struct device_attribute dev_attr_bluetooth_enable =
cc4c24e1 3175 __ATTR(bluetooth_enable, S_IWUSR | S_IRUGO,
d3a6ade4
HMH		 3176 bluetooth_enable_show, bluetooth_enable_store);
3177
3178/* --------------------------------------------------------------------- */
3179
3180static struct attribute *bluetooth_attributes[] = {
3181 &dev_attr_bluetooth_enable.attr,
3182 NULL
3183};
3184
3185static const struct attribute_group bluetooth_attr_group = {
d3a6ade4
HMH		 3186 .attrs = bluetooth_attributes,
3187};
3188
0e74dc26
HMH		 3189static int tpacpi_bluetooth_rfk_get(void *data, enum rfkill_state *state)
3190{
3191 int bts = bluetooth_get_radiosw();
3192
3193 if (bts < 0)
3194 return bts;
3195
3196 *state = bts;
3197 return 0;
3198}
3199
3200static int tpacpi_bluetooth_rfk_set(void *data, enum rfkill_state state)
3201{
bee4cd9b
HMH		 3202 dbg_printk(TPACPI_DBG_RFKILL,
3203 "request to change radio state to %d\n", state);
0e74dc26
HMH		 3204 return bluetooth_set_radiosw((state == RFKILL_STATE_UNBLOCKED), 0);
3205}
3206
90d9d3c7
HMH		 3207static void bluetooth_shutdown(void)
3208{
3209 /* Order firmware to save current state to NVRAM */
3210 if (!acpi_evalf(NULL, NULL, "\\BLTH", "vd",
3211 TP_ACPI_BLTH_SAVE_STATE))
3212 printk(TPACPI_NOTICE
3213 "failed to save bluetooth state to NVRAM\n");
bee4cd9b
HMH		 3214 else
3215 vdbg_printk(TPACPI_DBG_RFKILL,
3216 "bluestooth state saved to NVRAM\n");
90d9d3c7
HMH		 3217}
3218
07431ec8
HMH		 3219static void bluetooth_exit(void)
3220{
90d9d3c7
HMH		 3221 bluetooth_shutdown();
3222
0e74dc26
HMH		 3223 if (tpacpi_bluetooth_rfkill)
3224 rfkill_unregister(tpacpi_bluetooth_rfkill);
3225
07431ec8
HMH		 3226 sysfs_remove_group(&tpacpi_pdev->dev.kobj,
3227 &bluetooth_attr_group);
3228}
3229
a5763f22 3230static int __init bluetooth_init(struct ibm_init_struct *iibm)
1da177e4 3231{
d3a6ade4 3232 int res;
d6fdd1e9
HMH		 3233 int status = 0;
3234
bee4cd9b
HMH		 3235 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL,
3236 "initializing bluetooth subdriver\n");
fe08bc4b 3237
e0c7dfe7 3238 TPACPI_ACPIHANDLE_INIT(hkey);
5fba344c 3239
78f81cc4
BD		 3240 /* bluetooth not supported on 570, 600e/x, 770e, 770x, A21e, A2xm/p,
3241 G4x, R30, R31, R40e, R50e, T20-22, X20-21 */
d8fd94d9 3242 tp_features.bluetooth = hkey_handle &&
d6fdd1e9
HMH		 3243 acpi_evalf(hkey_handle, &status, "GBDC", "qd");
3244
bee4cd9b
HMH		 3245 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL,
3246 "bluetooth is %s, status 0x%02x\n",
d6fdd1e9
HMH		 3247 str_supported(tp_features.bluetooth),
3248 status);
3249
a73f3091
HMH		 3250#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
3251 if (dbg_bluetoothemul) {
3252 tp_features.bluetooth = 1;
3253 printk(TPACPI_INFO
3254 "bluetooth switch emulation enabled\n");
3255 } else
3256#endif
3a872080
HMH		 3257 if (tp_features.bluetooth &&
3258 !(status & TP_ACPI_BLUETOOTH_HWPRESENT)) {
3259 /* no bluetooth hardware present in system */
3260 tp_features.bluetooth = 0;
bee4cd9b 3261 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL,
3a872080
HMH		 3262 "bluetooth hardware not installed\n");
3263 }
3264
0e74dc26
HMH		 3265 if (!tp_features.bluetooth)
3266 return 1;
3267
3268 res = sysfs_create_group(&tpacpi_pdev->dev.kobj,
3a872080 3269 &bluetooth_attr_group);
0e74dc26
HMH		 3270 if (res)
3271 return res;
3272
3273 res = tpacpi_new_rfkill(TPACPI_RFK_BLUETOOTH_SW_ID,
3274 &tpacpi_bluetooth_rfkill,
3275 RFKILL_TYPE_BLUETOOTH,
bee4cd9b 3276 TPACPI_RFK_BLUETOOTH_SW_NAME,
0045c0aa 3277 true,
0e74dc26
HMH		 3278 tpacpi_bluetooth_rfk_set,
3279 tpacpi_bluetooth_rfk_get);
3280 if (res) {
3281 bluetooth_exit();
3282 return res;
d6fdd1e9 3283 }
fe08bc4b 3284
0e74dc26 3285 return 0;
1da177e4
LT		 3286}
3287
d3a6ade4 3288/* procfs -------------------------------------------------------------- */
78f81cc4 3289static int bluetooth_read(char *p)
1da177e4
LT		 3290{
3291 int len = 0;
d6fdd1e9 3292 int status = bluetooth_get_radiosw();
1da177e4 3293
d8fd94d9 3294 if (!tp_features.bluetooth)
1da177e4 3295 len += sprintf(p + len, "status:\t\tnot supported\n");
1da177e4 3296 else {
d6fdd1e9 3297 len += sprintf(p + len, "status:\t\t%s\n",
0e74dc26
HMH		 3298 (status == RFKILL_STATE_UNBLOCKED) ?
3299 "enabled" : "disabled");
1da177e4
LT		 3300 len += sprintf(p + len, "commands:\tenable, disable\n");
3301 }
3302
3303 return len;
3304}
3305
78f81cc4 3306static int bluetooth_write(char *buf)
1da177e4 3307{
1da177e4 3308 char *cmd;
bee4cd9b 3309 int state = -1;
1da177e4 3310
d8fd94d9 3311 if (!tp_features.bluetooth)
78f81cc4 3312 return -ENODEV;
1da177e4
LT		 3313
3314 while ((cmd = next_cmd(&buf))) {
3315 if (strlencmp(cmd, "enable") == 0) {
bee4cd9b 3316 state = 1;
1da177e4 3317 } else if (strlencmp(cmd, "disable") == 0) {
bee4cd9b 3318 state = 0;
1da177e4
LT		 3319 } else
3320 return -EINVAL;
1da177e4
LT		 3321 }
3322
bee4cd9b
HMH		 3323 if (state != -1) {
3324 tpacpi_disclose_usertask("procfs bluetooth",
3325 "attempt to %s\n",
3326 state ? "enable" : "disable");
3327 bluetooth_set_radiosw(state, 1);
3328 }
3329
1da177e4
LT		 3330 return 0;
3331}
3332
a5763f22
HMH		 3333static struct ibm_struct bluetooth_driver_data = {
3334 .name = "bluetooth",
3335 .read = bluetooth_read,
3336 .write = bluetooth_write,
d3a6ade4 3337 .exit = bluetooth_exit,
153f8220 3338 .suspend = bluetooth_suspend,
90d9d3c7 3339 .shutdown = bluetooth_shutdown,
a5763f22
HMH		 3340};
3341
56b6aeb0
HMH		 3342/*************************************************************************
3343 * Wan subdriver
3344 */
3345
f74a27d4
HMH		 3346enum {
3347 /* ACPI GWAN/SWAN bits */
3348 TP_ACPI_WANCARD_HWPRESENT = 0x01, /* Wan hw available */
3349 TP_ACPI_WANCARD_RADIOSSW = 0x02, /* Wan radio enabled */
153f8220
HMH		 3350 TP_ACPI_WANCARD_RESUMECTRL = 0x04, /* Wan state at resume:
3351 off / last state */
f74a27d4
HMH		 3352};
3353
bee4cd9b
HMH		 3354#define TPACPI_RFK_WWAN_SW_NAME "tpacpi_wwan_sw"
3355
0e74dc26
HMH		 3356static struct rfkill *tpacpi_wan_rfkill;
3357
153f8220
HMH		 3358static void wan_suspend(pm_message_t state)
3359{
3360 /* Try to make sure radio will resume powered off */
bee4cd9b
HMH		 3361 if (!acpi_evalf(NULL, NULL, "\\WGSV", "qvd",
3362 TP_ACPI_WGSV_PWR_OFF_ON_RESUME))
3363 vdbg_printk(TPACPI_DBG_RFKILL,
3364 "WWAN power down on resume request failed\n");
153f8220
HMH		 3365}
3366
07431ec8
HMH		 3367static int wan_get_radiosw(void)
3368{
3369 int status;
3370
3371 if (!tp_features.wan)
3372 return -ENODEV;
3373
133ec3bd
HMH		 3374 /* WLSW overrides WWAN in firmware/hardware, reflect that */
3375 if (tp_features.hotkey_wlsw && !hotkey_get_wlsw(&status) && !status)
0e74dc26 3376 return RFKILL_STATE_HARD_BLOCKED;
133ec3bd 3377
a73f3091
HMH		 3378#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
3379 if (dbg_wwanemul)
3380 return (tpacpi_wwan_emulstate) ?
3381 RFKILL_STATE_UNBLOCKED : RFKILL_STATE_SOFT_BLOCKED;
3382#endif
3383
07431ec8
HMH		 3384 if (!acpi_evalf(hkey_handle, &status, "GWAN", "d"))
3385 return -EIO;
3386
0e74dc26
HMH		 3387 return ((status & TP_ACPI_WANCARD_RADIOSSW) != 0) ?
3388 RFKILL_STATE_UNBLOCKED : RFKILL_STATE_SOFT_BLOCKED;
07431ec8
HMH		 3389}
3390
0e74dc26
HMH		 3391static void wan_update_rfk(void)
3392{
3393 int status;
3394
3395 if (!tpacpi_wan_rfkill)
3396 return;
3397
3398 status = wan_get_radiosw();
3399 if (status < 0)
3400 return;
3401 rfkill_force_state(tpacpi_wan_rfkill, status);
bee4cd9b
HMH		 3402
3403 vdbg_printk(TPACPI_DBG_RFKILL,
3404 "forced rfkill state to %d\n",
3405 status);
0e74dc26
HMH		 3406}
3407
3408static int wan_set_radiosw(int radio_on, int update_rfk)
07431ec8
HMH		 3409{
3410 int status;
3411
3412 if (!tp_features.wan)
3413 return -ENODEV;
3414
133ec3bd
HMH		 3415 /* WLSW overrides bluetooth in firmware/hardware, but there is no
3416 * reason to risk weird behaviour. */
3417 if (tp_features.hotkey_wlsw && !hotkey_get_wlsw(&status) && !status
3418 && radio_on)
3419 return -EPERM;
3420
bee4cd9b
HMH		 3421 vdbg_printk(TPACPI_DBG_RFKILL,
3422 "will %s WWAN\n", radio_on ? "enable" : "disable");
3423
a73f3091
HMH		 3424#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
3425 if (dbg_wwanemul) {
3426 tpacpi_wwan_emulstate = !!radio_on;
3427 if (update_rfk)
3428 wan_update_rfk();
3429 return 0;
3430 }
3431#endif
3432
153f8220 3433 /* We make sure to keep TP_ACPI_WANCARD_RESUMECTRL off */
07431ec8 3434 if (radio_on)
153f8220 3435 status = TP_ACPI_WANCARD_RADIOSSW;
07431ec8 3436 else
153f8220 3437 status = 0;
07431ec8
HMH		 3438 if (!acpi_evalf(hkey_handle, NULL, "SWAN", "vd", status))
3439 return -EIO;
3440
0e74dc26
HMH		 3441 if (update_rfk)
3442 wan_update_rfk();
3443
07431ec8
HMH		 3444 return 0;
3445}
f74a27d4 3446
d3a6ade4
HMH		 3447/* sysfs wan enable ---------------------------------------------------- */
3448static ssize_t wan_enable_show(struct device *dev,
3449 struct device_attribute *attr,
3450 char *buf)
3451{
3452 int status;
3453
73a94d86
HMH		 3454 printk_deprecated_rfkill_attribute("wwan_enable");
3455
d3a6ade4
HMH		 3456 status = wan_get_radiosw();
3457 if (status < 0)
3458 return status;
3459
0e74dc26
HMH		 3460 return snprintf(buf, PAGE_SIZE, "%d\n",
3461 (status == RFKILL_STATE_UNBLOCKED) ? 1 : 0);
d3a6ade4
HMH		 3462}
3463
3464static ssize_t wan_enable_store(struct device *dev,
3465 struct device_attribute *attr,
3466 const char *buf, size_t count)
3467{
3468 unsigned long t;
3469 int res;
3470
73a94d86
HMH		 3471 printk_deprecated_rfkill_attribute("wwan_enable");
3472
d3a6ade4
HMH		 3473 if (parse_strtoul(buf, 1, &t))
3474 return -EINVAL;
3475
bee4cd9b
HMH		 3476 tpacpi_disclose_usertask("wwan_enable", "set to %ld\n", t);
3477
0e74dc26 3478 res = wan_set_radiosw(t, 1);
d3a6ade4
HMH		 3479
3480 return (res) ? res : count;
3481}
3482
3483static struct device_attribute dev_attr_wan_enable =
cc4c24e1 3484 __ATTR(wwan_enable, S_IWUSR | S_IRUGO,
d3a6ade4
HMH		 3485 wan_enable_show, wan_enable_store);
3486
3487/* --------------------------------------------------------------------- */
3488
3489static struct attribute *wan_attributes[] = {
3490 &dev_attr_wan_enable.attr,
3491 NULL
3492};
3493
3494static const struct attribute_group wan_attr_group = {
d3a6ade4
HMH		 3495 .attrs = wan_attributes,
3496};
3497
0e74dc26
HMH		 3498static int tpacpi_wan_rfk_get(void *data, enum rfkill_state *state)
3499{
3500 int wans = wan_get_radiosw();
3501
3502 if (wans < 0)
3503 return wans;
3504
3505 *state = wans;
3506 return 0;
3507}
3508
3509static int tpacpi_wan_rfk_set(void *data, enum rfkill_state state)
3510{
bee4cd9b
HMH		 3511 dbg_printk(TPACPI_DBG_RFKILL,
3512 "request to change radio state to %d\n", state);
0e74dc26
HMH		 3513 return wan_set_radiosw((state == RFKILL_STATE_UNBLOCKED), 0);
3514}
3515
90d9d3c7
HMH		 3516static void wan_shutdown(void)
3517{
3518 /* Order firmware to save current state to NVRAM */
3519 if (!acpi_evalf(NULL, NULL, "\\WGSV", "vd",
3520 TP_ACPI_WGSV_SAVE_STATE))
3521 printk(TPACPI_NOTICE
3522 "failed to save WWAN state to NVRAM\n");
bee4cd9b
HMH		 3523 else
3524 vdbg_printk(TPACPI_DBG_RFKILL,
3525 "WWAN state saved to NVRAM\n");
90d9d3c7
HMH		 3526}
3527
07431ec8
HMH		 3528static void wan_exit(void)
3529{
90d9d3c7
HMH		 3530 wan_shutdown();
3531
0e74dc26
HMH		 3532 if (tpacpi_wan_rfkill)
3533 rfkill_unregister(tpacpi_wan_rfkill);
3534
07431ec8
HMH		 3535 sysfs_remove_group(&tpacpi_pdev->dev.kobj,
3536 &wan_attr_group);
3537}
3538
a5763f22 3539static int __init wan_init(struct ibm_init_struct *iibm)
42adb53c 3540{
d3a6ade4 3541 int res;
d6fdd1e9
HMH		 3542 int status = 0;
3543
bee4cd9b
HMH		 3544 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL,
3545 "initializing wan subdriver\n");
fe08bc4b 3546
e0c7dfe7 3547 TPACPI_ACPIHANDLE_INIT(hkey);
5fba344c 3548
d8fd94d9 3549 tp_features.wan = hkey_handle &&
d6fdd1e9
HMH		 3550 acpi_evalf(hkey_handle, &status, "GWAN", "qd");
3551
bee4cd9b
HMH		 3552 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL,
3553 "wan is %s, status 0x%02x\n",
d6fdd1e9
HMH		 3554 str_supported(tp_features.wan),
3555 status);
3556
a73f3091
HMH		 3557#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
3558 if (dbg_wwanemul) {
3559 tp_features.wan = 1;
3560 printk(TPACPI_INFO
3561 "wwan switch emulation enabled\n");
3562 } else
3563#endif
3a872080
HMH		 3564 if (tp_features.wan &&
3565 !(status & TP_ACPI_WANCARD_HWPRESENT)) {
3566 /* no wan hardware present in system */
3567 tp_features.wan = 0;
bee4cd9b 3568 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL,
3a872080
HMH		 3569 "wan hardware not installed\n");
3570 }
3571
0e74dc26
HMH		 3572 if (!tp_features.wan)
3573 return 1;
3574
3575 res = sysfs_create_group(&tpacpi_pdev->dev.kobj,
3a872080 3576 &wan_attr_group);
0e74dc26
HMH		 3577 if (res)
3578 return res;
3579
3580 res = tpacpi_new_rfkill(TPACPI_RFK_WWAN_SW_ID,
3581 &tpacpi_wan_rfkill,
3582 RFKILL_TYPE_WWAN,
bee4cd9b 3583 TPACPI_RFK_WWAN_SW_NAME,
0045c0aa 3584 true,
0e74dc26
HMH		 3585 tpacpi_wan_rfk_set,
3586 tpacpi_wan_rfk_get);
3587 if (res) {
3588 wan_exit();
3589 return res;
d6fdd1e9 3590 }
fe08bc4b 3591
0e74dc26 3592 return 0;
42adb53c
JF		 3593}
3594
d3a6ade4 3595/* procfs -------------------------------------------------------------- */
42adb53c
JF		 3596static int wan_read(char *p)
3597{
3598 int len = 0;
d6fdd1e9 3599 int status = wan_get_radiosw();
42adb53c 3600
bee4cd9b
HMH		 3601 tpacpi_disclose_usertask("procfs wan", "read");
3602
d8fd94d9 3603 if (!tp_features.wan)
42adb53c 3604 len += sprintf(p + len, "status:\t\tnot supported\n");
42adb53c 3605 else {
d6fdd1e9 3606 len += sprintf(p + len, "status:\t\t%s\n",
0e74dc26
HMH		 3607 (status == RFKILL_STATE_UNBLOCKED) ?
3608 "enabled" : "disabled");
42adb53c
JF		 3609 len += sprintf(p + len, "commands:\tenable, disable\n");
3610 }
3611
3612 return len;
3613}
3614
3615static int wan_write(char *buf)
3616{
42adb53c 3617 char *cmd;
bee4cd9b 3618 int state = -1;
42adb53c 3619
d8fd94d9 3620 if (!tp_features.wan)
42adb53c
JF		 3621 return -ENODEV;
3622
3623 while ((cmd = next_cmd(&buf))) {
3624 if (strlencmp(cmd, "enable") == 0) {
bee4cd9b 3625 state = 1;
42adb53c 3626 } else if (strlencmp(cmd, "disable") == 0) {
bee4cd9b 3627 state = 0;
42adb53c
JF		 3628 } else
3629 return -EINVAL;
42adb53c
JF		 3630 }
3631
bee4cd9b
HMH		 3632 if (state != -1) {
3633 tpacpi_disclose_usertask("procfs wan",
3634 "attempt to %s\n",
3635 state ? "enable" : "disable");
3636 wan_set_radiosw(state, 1);
3637 }
3638
42adb53c
JF		 3639 return 0;
3640}
3641
a5763f22
HMH		 3642static struct ibm_struct wan_driver_data = {
3643 .name = "wan",
3644 .read = wan_read,
3645 .write = wan_write,
d3a6ade4 3646 .exit = wan_exit,
153f8220 3647 .suspend = wan_suspend,
90d9d3c7 3648 .shutdown = wan_shutdown,
a5763f22
HMH		 3649};
3650
0045c0aa
HMH		 3651/*************************************************************************
3652 * UWB subdriver
3653 */
3654
3655enum {
3656 /* ACPI GUWB/SUWB bits */
3657 TP_ACPI_UWB_HWPRESENT = 0x01, /* UWB hw available */
3658 TP_ACPI_UWB_RADIOSSW = 0x02, /* UWB radio enabled */
3659};
3660
bee4cd9b
HMH		 3661#define TPACPI_RFK_UWB_SW_NAME "tpacpi_uwb_sw"
3662
0045c0aa
HMH		 3663static struct rfkill *tpacpi_uwb_rfkill;
3664
3665static int uwb_get_radiosw(void)
3666{
3667 int status;
3668
3669 if (!tp_features.uwb)
3670 return -ENODEV;
3671
3672 /* WLSW overrides UWB in firmware/hardware, reflect that */
3673 if (tp_features.hotkey_wlsw && !hotkey_get_wlsw(&status) && !status)
3674 return RFKILL_STATE_HARD_BLOCKED;
3675
3676#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
3677 if (dbg_uwbemul)
3678 return (tpacpi_uwb_emulstate) ?
3679 RFKILL_STATE_UNBLOCKED : RFKILL_STATE_SOFT_BLOCKED;
3680#endif
3681
3682 if (!acpi_evalf(hkey_handle, &status, "GUWB", "d"))
3683 return -EIO;
3684
3685 return ((status & TP_ACPI_UWB_RADIOSSW) != 0) ?
3686 RFKILL_STATE_UNBLOCKED : RFKILL_STATE_SOFT_BLOCKED;
3687}
3688
3689static void uwb_update_rfk(void)
3690{
3691 int status;
3692
3693 if (!tpacpi_uwb_rfkill)
3694 return;
3695
3696 status = uwb_get_radiosw();
3697 if (status < 0)
3698 return;
3699 rfkill_force_state(tpacpi_uwb_rfkill, status);
bee4cd9b
HMH		 3700
3701 vdbg_printk(TPACPI_DBG_RFKILL,
3702 "forced rfkill state to %d\n",
3703 status);
0045c0aa
HMH		 3704}
3705
3706static int uwb_set_radiosw(int radio_on, int update_rfk)
3707{
3708 int status;
3709
3710 if (!tp_features.uwb)
3711 return -ENODEV;
3712
3713 /* WLSW overrides UWB in firmware/hardware, but there is no
3714 * reason to risk weird behaviour. */
3715 if (tp_features.hotkey_wlsw && !hotkey_get_wlsw(&status) && !status
3716 && radio_on)
3717 return -EPERM;
3718
bee4cd9b
HMH		 3719 vdbg_printk(TPACPI_DBG_RFKILL,
3720 "will %s UWB\n", radio_on ? "enable" : "disable");
3721
0045c0aa
HMH		 3722#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
3723 if (dbg_uwbemul) {
3724 tpacpi_uwb_emulstate = !!radio_on;
3725 if (update_rfk)
3726 uwb_update_rfk();
3727 return 0;
3728 }
3729#endif
3730
3731 status = (radio_on) ? TP_ACPI_UWB_RADIOSSW : 0;
3732 if (!acpi_evalf(hkey_handle, NULL, "SUWB", "vd", status))
3733 return -EIO;
3734
3735 if (update_rfk)
3736 uwb_update_rfk();
3737
3738 return 0;
3739}
3740
3741/* --------------------------------------------------------------------- */
3742
3743static int tpacpi_uwb_rfk_get(void *data, enum rfkill_state *state)
3744{
3745 int uwbs = uwb_get_radiosw();
3746
3747 if (uwbs < 0)
3748 return uwbs;
3749
3750 *state = uwbs;
3751 return 0;
3752}
3753
3754static int tpacpi_uwb_rfk_set(void *data, enum rfkill_state state)
3755{
bee4cd9b
HMH		 3756 dbg_printk(TPACPI_DBG_RFKILL,
3757 "request to change radio state to %d\n", state);
0045c0aa
HMH		 3758 return uwb_set_radiosw((state == RFKILL_STATE_UNBLOCKED), 0);
3759}
3760
3761static void uwb_exit(void)
3762{
3763 if (tpacpi_uwb_rfkill)
3764 rfkill_unregister(tpacpi_uwb_rfkill);
3765}
3766
3767static int __init uwb_init(struct ibm_init_struct *iibm)
3768{
3769 int res;
3770 int status = 0;
3771
bee4cd9b
HMH		 3772 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL,
3773 "initializing uwb subdriver\n");
0045c0aa
HMH		 3774
3775 TPACPI_ACPIHANDLE_INIT(hkey);
3776
3777 tp_features.uwb = hkey_handle &&
3778 acpi_evalf(hkey_handle, &status, "GUWB", "qd");
3779
bee4cd9b
HMH		 3780 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL,
3781 "uwb is %s, status 0x%02x\n",
0045c0aa
HMH		 3782 str_supported(tp_features.uwb),
3783 status);
3784
3785#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
3786 if (dbg_uwbemul) {
3787 tp_features.uwb = 1;
3788 printk(TPACPI_INFO
3789 "uwb switch emulation enabled\n");
3790 } else
3791#endif
3792 if (tp_features.uwb &&
3793 !(status & TP_ACPI_UWB_HWPRESENT)) {
3794 /* no uwb hardware present in system */
3795 tp_features.uwb = 0;
3796 dbg_printk(TPACPI_DBG_INIT,
3797 "uwb hardware not installed\n");
3798 }
3799
3800 if (!tp_features.uwb)
3801 return 1;
3802
3803 res = tpacpi_new_rfkill(TPACPI_RFK_UWB_SW_ID,
3804 &tpacpi_uwb_rfkill,
3805 RFKILL_TYPE_UWB,
bee4cd9b 3806 TPACPI_RFK_UWB_SW_NAME,
0045c0aa
HMH		 3807 false,
3808 tpacpi_uwb_rfk_set,
3809 tpacpi_uwb_rfk_get);
3810
3811 return res;
3812}
3813
3814static struct ibm_struct uwb_driver_data = {
3815 .name = "uwb",
3816 .exit = uwb_exit,
3817 .flags.experimental = 1,
3818};
3819
56b6aeb0
HMH		 3820/*************************************************************************
3821 * Video subdriver
3822 */
3823
d7c1d17d
HMH		 3824#ifdef CONFIG_THINKPAD_ACPI_VIDEO
3825
f74a27d4
HMH		 3826enum video_access_mode {
3827 TPACPI_VIDEO_NONE = 0,
3828 TPACPI_VIDEO_570, /* 570 */
3829 TPACPI_VIDEO_770, /* 600e/x, 770e, 770x */
3830 TPACPI_VIDEO_NEW, /* all others */
3831};
3832
3833enum { /* video status flags, based on VIDEO_570 */
3834 TP_ACPI_VIDEO_S_LCD = 0x01, /* LCD output enabled */
3835 TP_ACPI_VIDEO_S_CRT = 0x02, /* CRT output enabled */
3836 TP_ACPI_VIDEO_S_DVI = 0x08, /* DVI output enabled */
3837};
3838
3839enum { /* TPACPI_VIDEO_570 constants */
3840 TP_ACPI_VIDEO_570_PHSCMD = 0x87, /* unknown magic constant :( */
3841 TP_ACPI_VIDEO_570_PHSMASK = 0x03, /* PHS bits that map to
3842 * video_status_flags */
3843 TP_ACPI_VIDEO_570_PHS2CMD = 0x8b, /* unknown magic constant :( */
3844 TP_ACPI_VIDEO_570_PHS2SET = 0x80, /* unknown magic constant :( */
3845};
3846
9a8e1738
HMH		 3847static enum video_access_mode video_supported;
3848static int video_orig_autosw;
78f81cc4 3849
f74a27d4
HMH		 3850static int video_autosw_get(void);
3851static int video_autosw_set(int enable);
3852
e0c7dfe7 3853TPACPI_HANDLE(vid2, root, "\\_SB.PCI0.AGPB.VID"); /* G41 */
56b6aeb0 3854
a5763f22 3855static int __init video_init(struct ibm_init_struct *iibm)
1da177e4 3856{
78f81cc4
BD		 3857 int ivga;
3858
fe08bc4b
HMH		 3859 vdbg_printk(TPACPI_DBG_INIT, "initializing video subdriver\n");
3860
e0c7dfe7
HMH		 3861 TPACPI_ACPIHANDLE_INIT(vid);
3862 TPACPI_ACPIHANDLE_INIT(vid2);
5fba344c 3863
78f81cc4
BD		 3864 if (vid2_handle && acpi_evalf(NULL, &ivga, "\\IVGA", "d") && ivga)
3865 /* G41, assume IVGA doesn't change */
3866 vid_handle = vid2_handle;
3867
3868 if (!vid_handle)
3869 /* video switching not supported on R30, R31 */
efa27145 3870 video_supported = TPACPI_VIDEO_NONE;
78f81cc4
BD		 3871 else if (acpi_evalf(vid_handle, &video_orig_autosw, "SWIT", "qd"))
3872 /* 570 */
efa27145 3873 video_supported = TPACPI_VIDEO_570;
78f81cc4
BD		 3874 else if (acpi_evalf(vid_handle, &video_orig_autosw, "^VADL", "qd"))
3875 /* 600e/x, 770e, 770x */
efa27145 3876 video_supported = TPACPI_VIDEO_770;
78f81cc4
BD		 3877 else
3878 /* all others */
efa27145 3879 video_supported = TPACPI_VIDEO_NEW;
1da177e4 3880
fe08bc4b
HMH		 3881 vdbg_printk(TPACPI_DBG_INIT, "video is %s, mode %d\n",
3882 str_supported(video_supported != TPACPI_VIDEO_NONE),
3883 video_supported);
3884
5fba344c 3885 return (video_supported != TPACPI_VIDEO_NONE)? 0 : 1;
1da177e4
LT		 3886}
3887
56b6aeb0
HMH		 3888static void video_exit(void)
3889{
83f34724
HMH		 3890 dbg_printk(TPACPI_DBG_EXIT,
3891 "restoring original video autoswitch mode\n");
3892 if (video_autosw_set(video_orig_autosw))
e0c7dfe7 3893 printk(TPACPI_ERR "error while trying to restore original "
83f34724 3894 "video autoswitch mode\n");
56b6aeb0
HMH		 3895}
3896
83f34724 3897static int video_outputsw_get(void)
1da177e4
LT		 3898{
3899 int status = 0;
3900 int i;
3901
83f34724
HMH		 3902 switch (video_supported) {
3903 case TPACPI_VIDEO_570:
3904 if (!acpi_evalf(NULL, &i, "\\_SB.PHS", "dd",
3905 TP_ACPI_VIDEO_570_PHSCMD))
3906 return -EIO;
3907 status = i & TP_ACPI_VIDEO_570_PHSMASK;
3908 break;
3909 case TPACPI_VIDEO_770:
3910 if (!acpi_evalf(NULL, &i, "\\VCDL", "d"))
3911 return -EIO;
3912 if (i)
3913 status |= TP_ACPI_VIDEO_S_LCD;
3914 if (!acpi_evalf(NULL, &i, "\\VCDC", "d"))
3915 return -EIO;
3916 if (i)
3917 status |= TP_ACPI_VIDEO_S_CRT;
3918 break;
3919 case TPACPI_VIDEO_NEW:
3920 if (!acpi_evalf(NULL, NULL, "\\VUPS", "vd", 1) ||
3921 !acpi_evalf(NULL, &i, "\\VCDC", "d"))
3922 return -EIO;
3923 if (i)
3924 status |= TP_ACPI_VIDEO_S_CRT;
3925
3926 if (!acpi_evalf(NULL, NULL, "\\VUPS", "vd", 0) ||
3927 !acpi_evalf(NULL, &i, "\\VCDL", "d"))
3928 return -EIO;
3929 if (i)
3930 status |= TP_ACPI_VIDEO_S_LCD;
3931 if (!acpi_evalf(NULL, &i, "\\VCDD", "d"))
3932 return -EIO;
3933 if (i)
3934 status |= TP_ACPI_VIDEO_S_DVI;
3935 break;
3936 default:
3937 return -ENOSYS;
78f81cc4
BD		 3938 }
3939
3940 return status;
3941}
1da177e4 3942
83f34724 3943static int video_outputsw_set(int status)
78f81cc4 3944{
83f34724
HMH		 3945 int autosw;
3946 int res = 0;
3947
3948 switch (video_supported) {
3949 case TPACPI_VIDEO_570:
3950 res = acpi_evalf(NULL, NULL,
3951 "\\_SB.PHS2", "vdd",
3952 TP_ACPI_VIDEO_570_PHS2CMD,
3953 status | TP_ACPI_VIDEO_570_PHS2SET);
3954 break;
3955 case TPACPI_VIDEO_770:
3956 autosw = video_autosw_get();
3957 if (autosw < 0)
3958 return autosw;
1da177e4 3959
83f34724
HMH		 3960 res = video_autosw_set(1);
3961 if (res)
3962 return res;
3963 res = acpi_evalf(vid_handle, NULL,
3964 "ASWT", "vdd", status * 0x100, 0);
3965 if (!autosw && video_autosw_set(autosw)) {
35ff8b9f
HMH		 3966 printk(TPACPI_ERR
3967 "video auto-switch left enabled due to error\n");
83f34724
HMH		 3968 return -EIO;
3969 }
3970 break;
3971 case TPACPI_VIDEO_NEW:
3972 res = acpi_evalf(NULL, NULL, "\\VUPS", "vd", 0x80) &&
35ff8b9f 3973 acpi_evalf(NULL, NULL, "\\VSDS", "vdd", status, 1);
83f34724
HMH		 3974 break;
3975 default:
3976 return -ENOSYS;
3977 }
1da177e4 3978
83f34724 3979 return (res)? 0 : -EIO;
1da177e4
LT		 3980}
3981
83f34724 3982static int video_autosw_get(void)
78f81cc4 3983{
83f34724 3984 int autosw = 0;
78f81cc4 3985
83f34724
HMH		 3986 switch (video_supported) {
3987 case TPACPI_VIDEO_570:
3988 if (!acpi_evalf(vid_handle, &autosw, "SWIT", "d"))
3989 return -EIO;
3990 break;
3991 case TPACPI_VIDEO_770:
3992 case TPACPI_VIDEO_NEW:
3993 if (!acpi_evalf(vid_handle, &autosw, "^VDEE", "d"))
3994 return -EIO;
3995 break;
3996 default:
3997 return -ENOSYS;
3998 }
78f81cc4 3999
83f34724 4000 return autosw & 1;
78f81cc4
BD		 4001}
4002
83f34724 4003static int video_autosw_set(int enable)
78f81cc4 4004{
83f34724
HMH		 4005 if (!acpi_evalf(vid_handle, NULL, "_DOS", "vd", (enable)? 1 : 0))
4006 return -EIO;
4007 return 0;
78f81cc4
BD		 4008}
4009
83f34724 4010static int video_outputsw_cycle(void)
78f81cc4 4011{
83f34724
HMH		 4012 int autosw = video_autosw_get();
4013 int res;
78f81cc4 4014
83f34724
HMH		 4015 if (autosw < 0)
4016 return autosw;
78f81cc4 4017
83f34724
HMH		 4018 switch (video_supported) {
4019 case TPACPI_VIDEO_570:
4020 res = video_autosw_set(1);
4021 if (res)
4022 return res;
4023 res = acpi_evalf(ec_handle, NULL, "_Q16", "v");
4024 break;
4025 case TPACPI_VIDEO_770:
4026 case TPACPI_VIDEO_NEW:
4027 res = video_autosw_set(1);
4028 if (res)
4029 return res;
4030 res = acpi_evalf(vid_handle, NULL, "VSWT", "v");
4031 break;
4032 default:
4033 return -ENOSYS;
4034 }
4035 if (!autosw && video_autosw_set(autosw)) {
35ff8b9f
HMH		 4036 printk(TPACPI_ERR
4037 "video auto-switch left enabled due to error\n");
83f34724 4038 return -EIO;
78f81cc4
BD		 4039 }
4040
83f34724
HMH		 4041 return (res)? 0 : -EIO;
4042}
4043
4044static int video_expand_toggle(void)
4045{
4046 switch (video_supported) {
4047 case TPACPI_VIDEO_570:
4048 return acpi_evalf(ec_handle, NULL, "_Q17", "v")?
4049 0 : -EIO;
4050 case TPACPI_VIDEO_770:
4051 return acpi_evalf(vid_handle, NULL, "VEXP", "v")?
4052 0 : -EIO;
4053 case TPACPI_VIDEO_NEW:
4054 return acpi_evalf(NULL, NULL, "\\VEXP", "v")?
4055 0 : -EIO;
4056 default:
4057 return -ENOSYS;
4058 }
4059 /* not reached */
78f81cc4
BD		 4060}
4061
56b6aeb0
HMH		 4062static int video_read(char *p)
4063{
83f34724 4064 int status, autosw;
56b6aeb0
HMH		 4065 int len = 0;
4066
83f34724 4067 if (video_supported == TPACPI_VIDEO_NONE) {
56b6aeb0
HMH		 4068 len += sprintf(p + len, "status:\t\tnot supported\n");
4069 return len;
4070 }
4071
83f34724
HMH		 4072 status = video_outputsw_get();
4073 if (status < 0)
4074 return status;
4075
4076 autosw = video_autosw_get();
4077 if (autosw < 0)
4078 return autosw;
4079
56b6aeb0
HMH		 4080 len += sprintf(p + len, "status:\t\tsupported\n");
4081 len += sprintf(p + len, "lcd:\t\t%s\n", enabled(status, 0));
4082 len += sprintf(p + len, "crt:\t\t%s\n", enabled(status, 1));
efa27145 4083 if (video_supported == TPACPI_VIDEO_NEW)
56b6aeb0
HMH		 4084 len += sprintf(p + len, "dvi:\t\t%s\n", enabled(status, 3));
4085 len += sprintf(p + len, "auto:\t\t%s\n", enabled(autosw, 0));
4086 len += sprintf(p + len, "commands:\tlcd_enable, lcd_disable\n");
4087 len += sprintf(p + len, "commands:\tcrt_enable, crt_disable\n");
efa27145 4088 if (video_supported == TPACPI_VIDEO_NEW)
56b6aeb0
HMH		 4089 len += sprintf(p + len, "commands:\tdvi_enable, dvi_disable\n");
4090 len += sprintf(p + len, "commands:\tauto_enable, auto_disable\n");
4091 len += sprintf(p + len, "commands:\tvideo_switch, expand_toggle\n");
4092
4093 return len;
4094}
4095
78f81cc4 4096static int video_write(char *buf)
1da177e4
LT		 4097{
4098 char *cmd;
4099 int enable, disable, status;
83f34724 4100 int res;
1da177e4 4101
83f34724 4102 if (video_supported == TPACPI_VIDEO_NONE)
78f81cc4
BD		 4103 return -ENODEV;
4104
83f34724
HMH		 4105 enable = 0;
4106 disable = 0;
1da177e4
LT		 4107
4108 while ((cmd = next_cmd(&buf))) {
4109 if (strlencmp(cmd, "lcd_enable") == 0) {
83f34724 4110 enable |= TP_ACPI_VIDEO_S_LCD;
1da177e4 4111 } else if (strlencmp(cmd, "lcd_disable") == 0) {
83f34724 4112 disable |= TP_ACPI_VIDEO_S_LCD;
1da177e4 4113 } else if (strlencmp(cmd, "crt_enable") == 0) {
83f34724 4114 enable |= TP_ACPI_VIDEO_S_CRT;
1da177e4 4115 } else if (strlencmp(cmd, "crt_disable") == 0) {
83f34724 4116 disable |= TP_ACPI_VIDEO_S_CRT;
efa27145 4117 } else if (video_supported == TPACPI_VIDEO_NEW &&
78f81cc4 4118 strlencmp(cmd, "dvi_enable") == 0) {
83f34724 4119 enable |= TP_ACPI_VIDEO_S_DVI;
efa27145 4120 } else if (video_supported == TPACPI_VIDEO_NEW &&
78f81cc4 4121 strlencmp(cmd, "dvi_disable") == 0) {
83f34724 4122 disable |= TP_ACPI_VIDEO_S_DVI;
1da177e4 4123 } else if (strlencmp(cmd, "auto_enable") == 0) {
83f34724
HMH		 4124 res = video_autosw_set(1);
4125 if (res)
4126 return res;
1da177e4 4127 } else if (strlencmp(cmd, "auto_disable") == 0) {
83f34724
HMH		 4128 res = video_autosw_set(0);
4129 if (res)
4130 return res;
1da177e4 4131 } else if (strlencmp(cmd, "video_switch") == 0) {
83f34724
HMH		 4132 res = video_outputsw_cycle();
4133 if (res)
4134 return res;
1da177e4 4135 } else if (strlencmp(cmd, "expand_toggle") == 0) {
83f34724
HMH		 4136 res = video_expand_toggle();
4137 if (res)
4138 return res;
1da177e4
LT		 4139 } else
4140 return -EINVAL;
4141 }
4142
4143 if (enable || disable) {
83f34724
HMH		 4144 status = video_outputsw_get();
4145 if (status < 0)
4146 return status;
4147 res = video_outputsw_set((status & ~disable) | enable);
4148 if (res)
4149 return res;
1da177e4
LT		 4150 }
4151
4152 return 0;
4153}
4154
a5763f22
HMH		 4155static struct ibm_struct video_driver_data = {
4156 .name = "video",
4157 .read = video_read,
4158 .write = video_write,
4159 .exit = video_exit,
4160};
4161
d7c1d17d
HMH		 4162#endif /* CONFIG_THINKPAD_ACPI_VIDEO */
4163
56b6aeb0
HMH		 4164/*************************************************************************
4165 * Light (thinklight) subdriver
4166 */
1da177e4 4167
e0c7dfe7
HMH		 4168TPACPI_HANDLE(lght, root, "\\LGHT"); /* A21e, A2xm/p, T20-22, X20-21 */
4169TPACPI_HANDLE(ledb, ec, "LEDB"); /* G4x */
56b6aeb0 4170
4fa6811b
HMH		 4171static int light_get_status(void)
4172{
4173 int status = 0;
4174
4175 if (tp_features.light_status) {
4176 if (!acpi_evalf(ec_handle, &status, "KBLT", "d"))
4177 return -EIO;
4178 return (!!status);
4179 }
4180
4181 return -ENXIO;
4182}
4183
4184static int light_set_status(int status)
4185{
4186 int rc;
4187
4188 if (tp_features.light) {
4189 if (cmos_handle) {
4190 rc = acpi_evalf(cmos_handle, NULL, NULL, "vd",
4191 (status)?
4192 TP_CMOS_THINKLIGHT_ON :
4193 TP_CMOS_THINKLIGHT_OFF);
4194 } else {
4195 rc = acpi_evalf(lght_handle, NULL, NULL, "vd",
4196 (status)? 1 : 0);
4197 }
4198 return (rc)? 0 : -EIO;
4199 }
4200
4201 return -ENXIO;
4202}
4203
e306501d
HMH		 4204static void light_set_status_worker(struct work_struct *work)
4205{
4206 struct tpacpi_led_classdev *data =
4207 container_of(work, struct tpacpi_led_classdev, work);
4208
4209 if (likely(tpacpi_lifecycle == TPACPI_LIFE_RUNNING))
4210 light_set_status((data->new_brightness != LED_OFF));
4211}
4212
4213static void light_sysfs_set(struct led_classdev *led_cdev,
4214 enum led_brightness brightness)
4215{
4216 struct tpacpi_led_classdev *data =
4217 container_of(led_cdev,
4218 struct tpacpi_led_classdev,
4219 led_classdev);
4220 data->new_brightness = brightness;
e0e3c061 4221 queue_work(tpacpi_wq, &data->work);
e306501d
HMH		 4222}
4223
4224static enum led_brightness light_sysfs_get(struct led_classdev *led_cdev)
4225{
4226 return (light_get_status() == 1)? LED_FULL : LED_OFF;
4227}
4228
4229static struct tpacpi_led_classdev tpacpi_led_thinklight = {
4230 .led_classdev = {
4231 .name = "tpacpi::thinklight",
4232 .brightness_set = &light_sysfs_set,
4233 .brightness_get = &light_sysfs_get,
4234 }
4235};
4236
a5763f22 4237static int __init light_init(struct ibm_init_struct *iibm)
1da177e4 4238{
9c0a76e1 4239 int rc;
e306501d 4240
fe08bc4b
HMH		 4241 vdbg_printk(TPACPI_DBG_INIT, "initializing light subdriver\n");
4242
e0c7dfe7
HMH		 4243 TPACPI_ACPIHANDLE_INIT(ledb);
4244 TPACPI_ACPIHANDLE_INIT(lght);
4245 TPACPI_ACPIHANDLE_INIT(cmos);
e306501d 4246 INIT_WORK(&tpacpi_led_thinklight.work, light_set_status_worker);
5fba344c 4247
78f81cc4 4248 /* light not supported on 570, 600e/x, 770e, 770x, G4x, R30, R31 */
d8fd94d9 4249 tp_features.light = (cmos_handle || lght_handle) && !ledb_handle;
78f81cc4 4250
d8fd94d9 4251 if (tp_features.light)
78f81cc4
BD		 4252 /* light status not supported on
4253 570, 600e/x, 770e, 770x, G4x, R30, R31, R32, X20 */
d8fd94d9
HMH		 4254 tp_features.light_status =
4255 acpi_evalf(ec_handle, NULL, "KBLT", "qv");
1da177e4 4256
9c0a76e1
HMH		 4257 vdbg_printk(TPACPI_DBG_INIT, "light is %s, light status is %s\n",
4258 str_supported(tp_features.light),
4259 str_supported(tp_features.light_status));
fe08bc4b 4260
9c0a76e1
HMH		 4261 if (!tp_features.light)
4262 return 1;
4263
4264 rc = led_classdev_register(&tpacpi_pdev->dev,
4265 &tpacpi_led_thinklight.led_classdev);
e306501d
HMH		 4266
4267 if (rc < 0) {
4268 tp_features.light = 0;
4269 tp_features.light_status = 0;
9c0a76e1
HMH		 4270 } else {
4271 rc = 0;
e306501d 4272 }
9c0a76e1 4273
e306501d
HMH		 4274 return rc;
4275}
4276
4277static void light_exit(void)
4278{
4279 led_classdev_unregister(&tpacpi_led_thinklight.led_classdev);
4280 if (work_pending(&tpacpi_led_thinklight.work))
e0e3c061 4281 flush_workqueue(tpacpi_wq);
1da177e4
LT		 4282}
4283
78f81cc4 4284static int light_read(char *p)
1da177e4
LT		 4285{
4286 int len = 0;
4fa6811b 4287 int status;
1da177e4 4288
d8fd94d9 4289 if (!tp_features.light) {
78f81cc4 4290 len += sprintf(p + len, "status:\t\tnot supported\n");
d8fd94d9 4291 } else if (!tp_features.light_status) {
78f81cc4
BD		 4292 len += sprintf(p + len, "status:\t\tunknown\n");
4293 len += sprintf(p + len, "commands:\ton, off\n");
4294 } else {
4fa6811b
HMH		 4295 status = light_get_status();
4296 if (status < 0)
4297 return status;
1da177e4 4298 len += sprintf(p + len, "status:\t\t%s\n", onoff(status, 0));
78f81cc4
BD		 4299 len += sprintf(p + len, "commands:\ton, off\n");
4300 }
1da177e4
LT		 4301
4302 return len;
4303}
4304
78f81cc4 4305static int light_write(char *buf)
1da177e4 4306{
1da177e4 4307 char *cmd;
4fa6811b 4308 int newstatus = 0;
78f81cc4 4309
d8fd94d9 4310 if (!tp_features.light)
78f81cc4
BD		 4311 return -ENODEV;
4312
1da177e4
LT		 4313 while ((cmd = next_cmd(&buf))) {
4314 if (strlencmp(cmd, "on") == 0) {
4fa6811b 4315 newstatus = 1;
1da177e4 4316 } else if (strlencmp(cmd, "off") == 0) {
4fa6811b 4317 newstatus = 0;
1da177e4
LT		 4318 } else
4319 return -EINVAL;
1da177e4
LT		 4320 }
4321
4fa6811b 4322 return light_set_status(newstatus);
1da177e4
LT		 4323}
4324
a5763f22
HMH		 4325static struct ibm_struct light_driver_data = {
4326 .name = "light",
4327 .read = light_read,
4328 .write = light_write,
e306501d 4329 .exit = light_exit,
a5763f22
HMH		 4330};
4331
56b6aeb0
HMH		 4332/*************************************************************************
4333 * Dock subdriver
4334 */
1da177e4 4335
85998248 4336#ifdef CONFIG_THINKPAD_ACPI_DOCK
56b6aeb0 4337
f74a27d4
HMH		 4338static void dock_notify(struct ibm_struct *ibm, u32 event);
4339static int dock_read(char *p);
4340static int dock_write(char *buf);
4341
e0c7dfe7 4342TPACPI_HANDLE(dock, root, "\\_SB.GDCK", /* X30, X31, X40 */
56b6aeb0
HMH		 4343 "\\_SB.PCI0.DOCK", /* 600e/x,770e,770x,A2xm/p,T20-22,X20-21 */
4344 "\\_SB.PCI0.PCI1.DOCK", /* all others */
4345 "\\_SB.PCI.ISA.SLCE", /* 570 */
4346 ); /* A21e,G4x,R30,R31,R32,R40,R40e,R50e */
4347
5fba344c 4348/* don't list other alternatives as we install a notify handler on the 570 */
e0c7dfe7 4349TPACPI_HANDLE(pci, root, "\\_SB.PCI"); /* 570 */
5fba344c 4350
1ba90e3a
TR		 4351static const struct acpi_device_id ibm_pci_device_ids[] = {
4352 {PCI_ROOT_HID_STRING, 0},
4353 {"", 0},
4354};
4355
d94a7f16
HMH		 4356static struct tp_acpi_drv_struct ibm_dock_acpidriver[2] = {
4357 {
4358 .notify = dock_notify,
4359 .handle = &dock_handle,
4360 .type = ACPI_SYSTEM_NOTIFY,
4361 },
4362 {
996fba08
HMH		 4363 /* THIS ONE MUST NEVER BE USED FOR DRIVER AUTOLOADING.
4364 * We just use it to get notifications of dock hotplug
4365 * in very old thinkpads */
1ba90e3a 4366 .hid = ibm_pci_device_ids,
d94a7f16
HMH		 4367 .notify = dock_notify,
4368 .handle = &pci_handle,
4369 .type = ACPI_SYSTEM_NOTIFY,
4370 },
4371};
4372
4373static struct ibm_struct dock_driver_data[2] = {
4374 {
4375 .name = "dock",
4376 .read = dock_read,
4377 .write = dock_write,
4378 .acpi = &ibm_dock_acpidriver[0],
4379 },
4380 {
4381 .name = "dock",
4382 .acpi = &ibm_dock_acpidriver[1],
4383 },
4384};
4385
1da177e4
LT		 4386#define dock_docked() (_sta(dock_handle) & 1)
4387
a5763f22 4388static int __init dock_init(struct ibm_init_struct *iibm)
5fba344c 4389{
fe08bc4b
HMH		 4390 vdbg_printk(TPACPI_DBG_INIT, "initializing dock subdriver\n");
4391
e0c7dfe7 4392 TPACPI_ACPIHANDLE_INIT(dock);
5fba344c 4393
fe08bc4b
HMH		 4394 vdbg_printk(TPACPI_DBG_INIT, "dock is %s\n",
4395 str_supported(dock_handle != NULL));
4396
5fba344c
HMH		 4397 return (dock_handle)? 0 : 1;
4398}
4399
d94a7f16
HMH		 4400static int __init dock_init2(struct ibm_init_struct *iibm)
4401{
4402 int dock2_needed;
4403
4404 vdbg_printk(TPACPI_DBG_INIT, "initializing dock subdriver part 2\n");
4405
4406 if (dock_driver_data[0].flags.acpi_driver_registered &&
4407 dock_driver_data[0].flags.acpi_notify_installed) {
e0c7dfe7 4408 TPACPI_ACPIHANDLE_INIT(pci);
d94a7f16
HMH		 4409 dock2_needed = (pci_handle != NULL);
4410 vdbg_printk(TPACPI_DBG_INIT,
4411 "dock PCI handler for the TP 570 is %s\n",
4412 str_supported(dock2_needed));
4413 } else {
4414 vdbg_printk(TPACPI_DBG_INIT,
4415 "dock subdriver part 2 not required\n");
4416 dock2_needed = 0;
4417 }
4418
4419 return (dock2_needed)? 0 : 1;
4420}
4421
56b6aeb0
HMH		 4422static void dock_notify(struct ibm_struct *ibm, u32 event)
4423{
4424 int docked = dock_docked();
1ba90e3a
TR		 4425 int pci = ibm->acpi->hid && ibm->acpi->device &&
4426 acpi_match_device_ids(ibm->acpi->device, ibm_pci_device_ids);
962ce8ca 4427 int data;
56b6aeb0
HMH		 4428
4429 if (event == 1 && !pci) /* 570 */
962ce8ca 4430 data = 1; /* button */
56b6aeb0 4431 else if (event == 1 && pci) /* 570 */
962ce8ca 4432 data = 3; /* dock */
56b6aeb0 4433 else if (event == 3 && docked)
962ce8ca 4434 data = 1; /* button */
56b6aeb0 4435 else if (event == 3 && !docked)
962ce8ca 4436 data = 2; /* undock */
56b6aeb0 4437 else if (event == 0 && docked)
962ce8ca 4438 data = 3; /* dock */
56b6aeb0 4439 else {
e0c7dfe7 4440 printk(TPACPI_ERR "unknown dock event %d, status %d\n",
56b6aeb0 4441 event, _sta(dock_handle));
962ce8ca 4442 data = 0; /* unknown */
56b6aeb0 4443 }
14e04fb3 4444 acpi_bus_generate_proc_event(ibm->acpi->device, event, data);
962ce8ca 4445 acpi_bus_generate_netlink_event(ibm->acpi->device->pnp.device_class,
e0b36fc5 4446 dev_name(&ibm->acpi->device->dev),
962ce8ca 4447 event, data);
56b6aeb0
HMH		 4448}
4449
78f81cc4 4450static int dock_read(char *p)
1da177e4
LT		 4451{
4452 int len = 0;
4453 int docked = dock_docked();
4454
4455 if (!dock_handle)
4456 len += sprintf(p + len, "status:\t\tnot supported\n");
4457 else if (!docked)
4458 len += sprintf(p + len, "status:\t\tundocked\n");
4459 else {
4460 len += sprintf(p + len, "status:\t\tdocked\n");
4461 len += sprintf(p + len, "commands:\tdock, undock\n");
4462 }
4463
4464 return len;
4465}
4466
78f81cc4 4467static int dock_write(char *buf)
1da177e4
LT		 4468{
4469 char *cmd;
4470
4471 if (!dock_docked())
78f81cc4 4472 return -ENODEV;
1da177e4
LT		 4473
4474 while ((cmd = next_cmd(&buf))) {
4475 if (strlencmp(cmd, "undock") == 0) {
78f81cc4
BD		 4476 if (!acpi_evalf(dock_handle, NULL, "_DCK", "vd", 0) ||
4477 !acpi_evalf(dock_handle, NULL, "_EJ0", "vd", 1))
56b6aeb0
HMH		 4478 return -EIO;
4479 } else if (strlencmp(cmd, "dock") == 0) {
4480 if (!acpi_evalf(dock_handle, NULL, "_DCK", "vd", 1))
4481 return -EIO;
4482 } else
4483 return -EINVAL;
1da177e4 4484 }
56b6aeb0
HMH		 4485
4486 return 0;
1da177e4 4487}
56b6aeb0 4488
85998248 4489#endif /* CONFIG_THINKPAD_ACPI_DOCK */
56b6aeb0
HMH		 4490
4491/*************************************************************************
4492 * Bay subdriver
4493 */
1da177e4 4494
85998248 4495#ifdef CONFIG_THINKPAD_ACPI_BAY
f74a27d4 4496
e0c7dfe7 4497TPACPI_HANDLE(bay, root, "\\_SB.PCI.IDE.SECN.MAST", /* 570 */
56b6aeb0
HMH		 4498 "\\_SB.PCI0.IDE0.IDES.IDSM", /* 600e/x, 770e, 770x */
4499 "\\_SB.PCI0.SATA.SCND.MSTR", /* T60, X60, Z60 */
4500 "\\_SB.PCI0.IDE0.SCND.MSTR", /* all others */
4501 ); /* A21e, R30, R31 */
e0c7dfe7 4502TPACPI_HANDLE(bay_ej, bay, "_EJ3", /* 600e/x, A2xm/p, A3x */
56b6aeb0
HMH		 4503 "_EJ0", /* all others */
4504 ); /* 570,A21e,G4x,R30,R31,R32,R40e,R50e */
e0c7dfe7 4505TPACPI_HANDLE(bay2, root, "\\_SB.PCI0.IDE0.PRIM.SLAV", /* A3x, R32 */
56b6aeb0
HMH		 4506 "\\_SB.PCI0.IDE0.IDEP.IDPS", /* 600e/x, 770e, 770x */
4507 ); /* all others */
e0c7dfe7 4508TPACPI_HANDLE(bay2_ej, bay2, "_EJ3", /* 600e/x, 770e, A3x */
56b6aeb0
HMH		 4509 "_EJ0", /* 770x */
4510 ); /* all others */
4511
a5763f22 4512static int __init bay_init(struct ibm_init_struct *iibm)
1da177e4 4513{
fe08bc4b
HMH		 4514 vdbg_printk(TPACPI_DBG_INIT, "initializing bay subdriver\n");
4515
e0c7dfe7 4516 TPACPI_ACPIHANDLE_INIT(bay);
5fba344c 4517 if (bay_handle)
e0c7dfe7
HMH		 4518 TPACPI_ACPIHANDLE_INIT(bay_ej);
4519 TPACPI_ACPIHANDLE_INIT(bay2);
5fba344c 4520 if (bay2_handle)
e0c7dfe7 4521 TPACPI_ACPIHANDLE_INIT(bay2_ej);
5fba344c 4522
d8fd94d9
HMH		 4523 tp_features.bay_status = bay_handle &&
4524 acpi_evalf(bay_handle, NULL, "_STA", "qv");
4525 tp_features.bay_status2 = bay2_handle &&
4526 acpi_evalf(bay2_handle, NULL, "_STA", "qv");
78f81cc4 4527
d8fd94d9
HMH		 4528 tp_features.bay_eject = bay_handle && bay_ej_handle &&
4529 (strlencmp(bay_ej_path, "_EJ0") == 0 || experimental);
4530 tp_features.bay_eject2 = bay2_handle && bay2_ej_handle &&
4531 (strlencmp(bay2_ej_path, "_EJ0") == 0 || experimental);
1da177e4 4532
fe08bc4b
HMH		 4533 vdbg_printk(TPACPI_DBG_INIT,
4534 "bay 1: status %s, eject %s; bay 2: status %s, eject %s\n",
d8fd94d9
HMH		 4535 str_supported(tp_features.bay_status),
4536 str_supported(tp_features.bay_eject),
4537 str_supported(tp_features.bay_status2),
4538 str_supported(tp_features.bay_eject2));
fe08bc4b 4539
d8fd94d9
HMH		 4540 return (tp_features.bay_status || tp_features.bay_eject ||
4541 tp_features.bay_status2 || tp_features.bay_eject2)? 0 : 1;
1da177e4
LT		 4542}
4543
56b6aeb0
HMH		 4544static void bay_notify(struct ibm_struct *ibm, u32 event)
4545{
14e04fb3 4546 acpi_bus_generate_proc_event(ibm->acpi->device, event, 0);
962ce8ca 4547 acpi_bus_generate_netlink_event(ibm->acpi->device->pnp.device_class,
e0b36fc5 4548 dev_name(&ibm->acpi->device->dev),
962ce8ca 4549 event, 0);
56b6aeb0
HMH		 4550}
4551
78f81cc4
BD		 4552#define bay_occupied(b) (_sta(b##_handle) & 1)
4553
4554static int bay_read(char *p)
1da177e4
LT		 4555{
4556 int len = 0;
78f81cc4
BD		 4557 int occupied = bay_occupied(bay);
4558 int occupied2 = bay_occupied(bay2);
4559 int eject, eject2;
4560
d8fd94d9
HMH		 4561 len += sprintf(p + len, "status:\t\t%s\n",
4562 tp_features.bay_status ?
4563 (occupied ? "occupied" : "unoccupied") :
4564 "not supported");
4565 if (tp_features.bay_status2)
78f81cc4
BD		 4566 len += sprintf(p + len, "status2:\t%s\n", occupied2 ?
4567 "occupied" : "unoccupied");
4568
d8fd94d9
HMH		 4569 eject = tp_features.bay_eject && occupied;
4570 eject2 = tp_features.bay_eject2 && occupied2;
78f81cc4
BD		 4571
4572 if (eject && eject2)
4573 len += sprintf(p + len, "commands:\teject, eject2\n");
4574 else if (eject)
1da177e4 4575 len += sprintf(p + len, "commands:\teject\n");
78f81cc4
BD		 4576 else if (eject2)
4577 len += sprintf(p + len, "commands:\teject2\n");
1da177e4
LT		 4578
4579 return len;
4580}
4581
78f81cc4 4582static int bay_write(char *buf)
1da177e4
LT		 4583{
4584 char *cmd;
4585
d8fd94d9 4586 if (!tp_features.bay_eject && !tp_features.bay_eject2)
78f81cc4
BD		 4587 return -ENODEV;
4588
1da177e4 4589 while ((cmd = next_cmd(&buf))) {
d8fd94d9 4590 if (tp_features.bay_eject && strlencmp(cmd, "eject") == 0) {
78f81cc4
BD		 4591 if (!acpi_evalf(bay_ej_handle, NULL, NULL, "vd", 1))
4592 return -EIO;
d8fd94d9 4593 } else if (tp_features.bay_eject2 &&
78f81cc4
BD		 4594 strlencmp(cmd, "eject2") == 0) {
4595 if (!acpi_evalf(bay2_ej_handle, NULL, NULL, "vd", 1))
1da177e4
LT		 4596 return -EIO;
4597 } else
4598 return -EINVAL;
4599 }
4600
4601 return 0;
78f81cc4 4602}
a5763f22 4603
8d376cd6
HMH		 4604static struct tp_acpi_drv_struct ibm_bay_acpidriver = {
4605 .notify = bay_notify,
4606 .handle = &bay_handle,
4607 .type = ACPI_SYSTEM_NOTIFY,
4608};
4609
a5763f22
HMH		 4610static struct ibm_struct bay_driver_data = {
4611 .name = "bay",
4612 .read = bay_read,
4613 .write = bay_write,
8d376cd6 4614 .acpi = &ibm_bay_acpidriver,
a5763f22
HMH		 4615};
4616
85998248 4617#endif /* CONFIG_THINKPAD_ACPI_BAY */
1da177e4 4618
56b6aeb0
HMH		 4619/*************************************************************************
4620 * CMOS subdriver
4621 */
4622
b616004c
HMH		 4623/* sysfs cmos_command -------------------------------------------------- */
4624static ssize_t cmos_command_store(struct device *dev,
4625 struct device_attribute *attr,
4626 const char *buf, size_t count)
4627{
4628 unsigned long cmos_cmd;
4629 int res;
4630
4631 if (parse_strtoul(buf, 21, &cmos_cmd))
4632 return -EINVAL;
4633
4634 res = issue_thinkpad_cmos_command(cmos_cmd);
4635 return (res)? res : count;
4636}
4637
4638static struct device_attribute dev_attr_cmos_command =
4639 __ATTR(cmos_command, S_IWUSR, NULL, cmos_command_store);
4640
4641/* --------------------------------------------------------------------- */
4642
a5763f22 4643static int __init cmos_init(struct ibm_init_struct *iibm)
5fba344c 4644{
b616004c
HMH		 4645 int res;
4646
fe08bc4b
HMH		 4647 vdbg_printk(TPACPI_DBG_INIT,
4648 "initializing cmos commands subdriver\n");
4649
e0c7dfe7 4650 TPACPI_ACPIHANDLE_INIT(cmos);
5fba344c 4651
fe08bc4b
HMH		 4652 vdbg_printk(TPACPI_DBG_INIT, "cmos commands are %s\n",
4653 str_supported(cmos_handle != NULL));
b616004c
HMH		 4654
4655 res = device_create_file(&tpacpi_pdev->dev, &dev_attr_cmos_command);
4656 if (res)
4657 return res;
4658
5fba344c
HMH		 4659 return (cmos_handle)? 0 : 1;
4660}
4661
b616004c
HMH		 4662static void cmos_exit(void)
4663{
4664 device_remove_file(&tpacpi_pdev->dev, &dev_attr_cmos_command);
4665}
4666
78f81cc4 4667static int cmos_read(char *p)
1da177e4
LT		 4668{
4669 int len = 0;
4670
78f81cc4
BD		 4671 /* cmos not supported on 570, 600e/x, 770e, 770x, A21e, A2xm/p,
4672 R30, R31, T20-22, X20-21 */
1da177e4
LT		 4673 if (!cmos_handle)
4674 len += sprintf(p + len, "status:\t\tnot supported\n");
4675 else {
4676 len += sprintf(p + len, "status:\t\tsupported\n");
78f81cc4 4677 len += sprintf(p + len, "commands:\t<cmd> (<cmd> is 0-21)\n");
1da177e4
LT		 4678 }
4679
4680 return len;
4681}
4682
78f81cc4 4683static int cmos_write(char *buf)
1da177e4
LT		 4684{
4685 char *cmd;
c9bea99c 4686 int cmos_cmd, res;
1da177e4
LT		 4687
4688 while ((cmd = next_cmd(&buf))) {
78f81cc4
BD		 4689 if (sscanf(cmd, "%u", &cmos_cmd) == 1 &&
4690 cmos_cmd >= 0 && cmos_cmd <= 21) {
1da177e4
LT		 4691 /* cmos_cmd set */
4692 } else
4693 return -EINVAL;
4694
c9bea99c
HMH		 4695 res = issue_thinkpad_cmos_command(cmos_cmd);
4696 if (res)
4697 return res;
1da177e4
LT		 4698 }
4699
4700 return 0;
78f81cc4
BD		 4701}
4702
a5763f22
HMH		 4703static struct ibm_struct cmos_driver_data = {
4704 .name = "cmos",
4705 .read = cmos_read,
4706 .write = cmos_write,
b616004c 4707 .exit = cmos_exit,
a5763f22 4708};
56b6aeb0
HMH		 4709
4710/*************************************************************************
4711 * LED subdriver
4712 */
4713
f74a27d4
HMH		 4714enum led_access_mode {
4715 TPACPI_LED_NONE = 0,
4716 TPACPI_LED_570, /* 570 */
4717 TPACPI_LED_OLD, /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20-21 */
4718 TPACPI_LED_NEW, /* all others */
4719};
4720
4721enum { /* For TPACPI_LED_OLD */
4722 TPACPI_LED_EC_HLCL = 0x0c, /* EC reg to get led to power on */
4723 TPACPI_LED_EC_HLBL = 0x0d, /* EC reg to blink a lit led */
4724 TPACPI_LED_EC_HLMS = 0x0e, /* EC reg to select led to command */
4725};
4726
4fa6811b
HMH		 4727enum led_status_t {
4728 TPACPI_LED_OFF = 0,
4729 TPACPI_LED_ON,
4730 TPACPI_LED_BLINK,
4731};
4732
9a8e1738 4733static enum led_access_mode led_supported;
78f81cc4 4734
e0c7dfe7 4735TPACPI_HANDLE(led, ec, "SLED", /* 570 */
35ff8b9f
HMH		 4736 "SYSL", /* 600e/x, 770e, 770x, A21e, A2xm/p, */
4737 /* T20-22, X20-21 */
56b6aeb0
HMH		 4738 "LED", /* all others */
4739 ); /* R30, R31 */
4740
af116101
HMH		 4741#define TPACPI_LED_NUMLEDS 8
4742static struct tpacpi_led_classdev *tpacpi_leds;
4743static enum led_status_t tpacpi_led_state_cache[TPACPI_LED_NUMLEDS];
e3aa51fe 4744static const char * const tpacpi_led_names[TPACPI_LED_NUMLEDS] = {
af116101
HMH		 4745 /* there's a limit of 19 chars + NULL before 2.6.26 */
4746 "tpacpi::power",
4747 "tpacpi:orange:batt",
4748 "tpacpi:green:batt",
4749 "tpacpi::dock_active",
4750 "tpacpi::bay_active",
4751 "tpacpi::dock_batt",
4752 "tpacpi::unknown_led",
4753 "tpacpi::standby",
4754};
a4d5effc
HMH		 4755#define TPACPI_SAFE_LEDS 0x0081U
4756
4757static inline bool tpacpi_is_led_restricted(const unsigned int led)
4758{
4759#ifdef CONFIG_THINKPAD_ACPI_UNSAFE_LEDS
4760 return false;
4761#else
4762 return (TPACPI_SAFE_LEDS & (1 << led)) == 0;
4763#endif
4764}
af116101 4765
24e45bbe 4766static int led_get_status(const unsigned int led)
4fa6811b
HMH		 4767{
4768 int status;
af116101 4769 enum led_status_t led_s;
4fa6811b
HMH		 4770
4771 switch (led_supported) {
4772 case TPACPI_LED_570:
4773 if (!acpi_evalf(ec_handle,
4774 &status, "GLED", "dd", 1 << led))
4775 return -EIO;
af116101 4776 led_s = (status == 0)?
4fa6811b
HMH		 4777 TPACPI_LED_OFF :
4778 ((status == 1)?
4779 TPACPI_LED_ON :
4780 TPACPI_LED_BLINK);
af116101
HMH		 4781 tpacpi_led_state_cache[led] = led_s;
4782 return led_s;
4fa6811b
HMH		 4783 default:
4784 return -ENXIO;
4785 }
4786
4787 /* not reached */
4788}
4789
24e45bbe
HMH		 4790static int led_set_status(const unsigned int led,
4791 const enum led_status_t ledstatus)
4fa6811b
HMH		 4792{
4793 /* off, on, blink. Index is led_status_t */
24e45bbe
HMH		 4794 static const unsigned int led_sled_arg1[] = { 0, 1, 3 };
4795 static const unsigned int led_led_arg1[] = { 0, 0x80, 0xc0 };
4fa6811b
HMH		 4796
4797 int rc = 0;
4798
4799 switch (led_supported) {
4800 case TPACPI_LED_570:
24e45bbe 4801 /* 570 */
a4d5effc 4802 if (unlikely(led > 7))
24e45bbe 4803 return -EINVAL;
a4d5effc
HMH		 4804 if (unlikely(tpacpi_is_led_restricted(led)))
4805 return -EPERM;
24e45bbe
HMH		 4806 if (!acpi_evalf(led_handle, NULL, NULL, "vdd",
4807 (1 << led), led_sled_arg1[ledstatus]))
4808 rc = -EIO;
4809 break;
4fa6811b 4810 case TPACPI_LED_OLD:
24e45bbe 4811 /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20 */
a4d5effc 4812 if (unlikely(led > 7))
24e45bbe 4813 return -EINVAL;
a4d5effc
HMH		 4814 if (unlikely(tpacpi_is_led_restricted(led)))
4815 return -EPERM;
24e45bbe
HMH		 4816 rc = ec_write(TPACPI_LED_EC_HLMS, (1 << led));
4817 if (rc >= 0)
4818 rc = ec_write(TPACPI_LED_EC_HLBL,
4819 (ledstatus == TPACPI_LED_BLINK) << led);
4820 if (rc >= 0)
4821 rc = ec_write(TPACPI_LED_EC_HLCL,
4822 (ledstatus != TPACPI_LED_OFF) << led);
4823 break;
4fa6811b 4824 case TPACPI_LED_NEW:
24e45bbe 4825 /* all others */
a4d5effc
HMH		 4826 if (unlikely(led >= TPACPI_LED_NUMLEDS))
4827 return -EINVAL;
4828 if (unlikely(tpacpi_is_led_restricted(led)))
4829 return -EPERM;
24e45bbe
HMH		 4830 if (!acpi_evalf(led_handle, NULL, NULL, "vdd",
4831 led, led_led_arg1[ledstatus]))
4832 rc = -EIO;
4833 break;
4fa6811b
HMH		 4834 default:
4835 rc = -ENXIO;
4836 }
4837
af116101
HMH		 4838 if (!rc)
4839 tpacpi_led_state_cache[led] = ledstatus;
4840
4841 return rc;
4842}
4843
4844static void led_sysfs_set_status(unsigned int led,
4845 enum led_brightness brightness)
4846{
4847 led_set_status(led,
4848 (brightness == LED_OFF) ?
4849 TPACPI_LED_OFF :
4850 (tpacpi_led_state_cache[led] == TPACPI_LED_BLINK) ?
4851 TPACPI_LED_BLINK : TPACPI_LED_ON);
4852}
4853
4854static void led_set_status_worker(struct work_struct *work)
4855{
4856 struct tpacpi_led_classdev *data =
4857 container_of(work, struct tpacpi_led_classdev, work);
4858
4859 if (likely(tpacpi_lifecycle == TPACPI_LIFE_RUNNING))
4860 led_sysfs_set_status(data->led, data->new_brightness);
4861}
4862
4863static void led_sysfs_set(struct led_classdev *led_cdev,
4864 enum led_brightness brightness)
4865{
4866 struct tpacpi_led_classdev *data = container_of(led_cdev,
4867 struct tpacpi_led_classdev, led_classdev);
4868
4869 data->new_brightness = brightness;
e0e3c061 4870 queue_work(tpacpi_wq, &data->work);
af116101
HMH		 4871}
4872
4873static int led_sysfs_blink_set(struct led_classdev *led_cdev,
4874 unsigned long *delay_on, unsigned long *delay_off)
4875{
4876 struct tpacpi_led_classdev *data = container_of(led_cdev,
4877 struct tpacpi_led_classdev, led_classdev);
4878
4879 /* Can we choose the flash rate? */
4880 if (*delay_on == 0 && *delay_off == 0) {
4881 /* yes. set them to the hardware blink rate (1 Hz) */
4882 *delay_on = 500; /* ms */
4883 *delay_off = 500; /* ms */
4884 } else if ((*delay_on != 500) || (*delay_off != 500))
4885 return -EINVAL;
4886
4887 data->new_brightness = TPACPI_LED_BLINK;
e0e3c061 4888 queue_work(tpacpi_wq, &data->work);
af116101
HMH		 4889
4890 return 0;
4891}
4892
4893static enum led_brightness led_sysfs_get(struct led_classdev *led_cdev)
4894{
4895 int rc;
4896
4897 struct tpacpi_led_classdev *data = container_of(led_cdev,
4898 struct tpacpi_led_classdev, led_classdev);
4899
4900 rc = led_get_status(data->led);
4901
4902 if (rc == TPACPI_LED_OFF || rc < 0)
4903 rc = LED_OFF; /* no error handling in led class :( */
4904 else
4905 rc = LED_FULL;
4906
4fa6811b
HMH		 4907 return rc;
4908}
4909
af116101
HMH		 4910static void led_exit(void)
4911{
4912 unsigned int i;
4913
4914 for (i = 0; i < TPACPI_LED_NUMLEDS; i++) {
4915 if (tpacpi_leds[i].led_classdev.name)
4916 led_classdev_unregister(&tpacpi_leds[i].led_classdev);
4917 }
4918
4919 kfree(tpacpi_leds);
af116101
HMH		 4920}
4921
a4d5effc
HMH		 4922static int __init tpacpi_init_led(unsigned int led)
4923{
4924 int rc;
4925
4926 tpacpi_leds[led].led = led;
4927
4928 tpacpi_leds[led].led_classdev.brightness_set = &led_sysfs_set;
4929 tpacpi_leds[led].led_classdev.blink_set = &led_sysfs_blink_set;
4930 if (led_supported == TPACPI_LED_570)
4931 tpacpi_leds[led].led_classdev.brightness_get =
4932 &led_sysfs_get;
4933
4934 tpacpi_leds[led].led_classdev.name = tpacpi_led_names[led];
4935
4936 INIT_WORK(&tpacpi_leds[led].work, led_set_status_worker);
4937
4938 rc = led_classdev_register(&tpacpi_pdev->dev,
4939 &tpacpi_leds[led].led_classdev);
4940 if (rc < 0)
4941 tpacpi_leds[led].led_classdev.name = NULL;
4942
4943 return rc;
4944}
4945
a5763f22 4946static int __init led_init(struct ibm_init_struct *iibm)
78f81cc4 4947{
af116101
HMH		 4948 unsigned int i;
4949 int rc;
4950
fe08bc4b
HMH		 4951 vdbg_printk(TPACPI_DBG_INIT, "initializing LED subdriver\n");
4952
e0c7dfe7 4953 TPACPI_ACPIHANDLE_INIT(led);
5fba344c 4954
78f81cc4
BD		 4955 if (!led_handle)
4956 /* led not supported on R30, R31 */
efa27145 4957 led_supported = TPACPI_LED_NONE;
78f81cc4
BD		 4958 else if (strlencmp(led_path, "SLED") == 0)
4959 /* 570 */
efa27145 4960 led_supported = TPACPI_LED_570;
78f81cc4
BD		 4961 else if (strlencmp(led_path, "SYSL") == 0)
4962 /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20-21 */
efa27145 4963 led_supported = TPACPI_LED_OLD;
78f81cc4
BD		 4964 else
4965 /* all others */
efa27145 4966 led_supported = TPACPI_LED_NEW;
78f81cc4 4967
fe08bc4b
HMH		 4968 vdbg_printk(TPACPI_DBG_INIT, "LED commands are %s, mode %d\n",
4969 str_supported(led_supported), led_supported);
4970
af116101
HMH		 4971 tpacpi_leds = kzalloc(sizeof(*tpacpi_leds) * TPACPI_LED_NUMLEDS,
4972 GFP_KERNEL);
4973 if (!tpacpi_leds) {
4974 printk(TPACPI_ERR "Out of memory for LED data\n");
4975 return -ENOMEM;
4976 }
4977
4978 for (i = 0; i < TPACPI_LED_NUMLEDS; i++) {
a4d5effc
HMH		 4979 if (!tpacpi_is_led_restricted(i)) {
4980 rc = tpacpi_init_led(i);
4981 if (rc < 0) {
4982 led_exit();
4983 return rc;
4984 }
af116101
HMH		 4985 }
4986 }
4987
a4d5effc
HMH		 4988#ifdef CONFIG_THINKPAD_ACPI_UNSAFE_LEDS
4989 if (led_supported != TPACPI_LED_NONE)
4990 printk(TPACPI_NOTICE
4991 "warning: userspace override of important "
4992 "firmware LEDs is enabled\n");
4993#endif
5fba344c 4994 return (led_supported != TPACPI_LED_NONE)? 0 : 1;
78f81cc4
BD		 4995}
4996
4fa6811b
HMH		 4997#define str_led_status(s) \
4998 ((s) == TPACPI_LED_OFF ? "off" : \
4999 ((s) == TPACPI_LED_ON ? "on" : "blinking"))
78f81cc4
BD		 5000
5001static int led_read(char *p)
1da177e4
LT		 5002{
5003 int len = 0;
5004
78f81cc4
BD		 5005 if (!led_supported) {
5006 len += sprintf(p + len, "status:\t\tnot supported\n");
5007 return len;
5008 }
5009 len += sprintf(p + len, "status:\t\tsupported\n");
5010
efa27145 5011 if (led_supported == TPACPI_LED_570) {
78f81cc4
BD		 5012 /* 570 */
5013 int i, status;
5014 for (i = 0; i < 8; i++) {
4fa6811b
HMH		 5015 status = led_get_status(i);
5016 if (status < 0)
78f81cc4
BD		 5017 return -EIO;
5018 len += sprintf(p + len, "%d:\t\t%s\n",
4fa6811b 5019 i, str_led_status(status));
78f81cc4
BD		 5020 }
5021 }
5022
1da177e4 5023 len += sprintf(p + len, "commands:\t"
78f81cc4 5024 "<led> on, <led> off, <led> blink (<led> is 0-7)\n");
1da177e4
LT		 5025
5026 return len;
5027}
5028
78f81cc4 5029static int led_write(char *buf)
1da177e4
LT		 5030{
5031 char *cmd;
4fa6811b
HMH		 5032 int led, rc;
5033 enum led_status_t s;
78f81cc4
BD		 5034
5035 if (!led_supported)
5036 return -ENODEV;
1da177e4
LT		 5037
5038 while ((cmd = next_cmd(&buf))) {
78f81cc4 5039 if (sscanf(cmd, "%d", &led) != 1 || led < 0 || led > 7)
1da177e4
LT		 5040 return -EINVAL;
5041
78f81cc4 5042 if (strstr(cmd, "off")) {
4fa6811b 5043 s = TPACPI_LED_OFF;
1da177e4 5044 } else if (strstr(cmd, "on")) {
4fa6811b 5045 s = TPACPI_LED_ON;
78f81cc4 5046 } else if (strstr(cmd, "blink")) {
4fa6811b 5047 s = TPACPI_LED_BLINK;
78f81cc4 5048 } else {
4fa6811b 5049 return -EINVAL;
78f81cc4 5050 }
4fa6811b
HMH		 5051
5052 rc = led_set_status(led, s);
5053 if (rc < 0)
5054 return rc;
78f81cc4
BD		 5055 }
5056
5057 return 0;
5058}
5059
a5763f22
HMH		 5060static struct ibm_struct led_driver_data = {
5061 .name = "led",
5062 .read = led_read,
5063 .write = led_write,
af116101 5064 .exit = led_exit,
a5763f22
HMH		 5065};
5066
56b6aeb0
HMH		 5067/*************************************************************************
5068 * Beep subdriver
5069 */
5070
e0c7dfe7 5071TPACPI_HANDLE(beep, ec, "BEEP"); /* all except R30, R31 */
56b6aeb0 5072
a5763f22 5073static int __init beep_init(struct ibm_init_struct *iibm)
5fba344c 5074{
fe08bc4b
HMH		 5075 vdbg_printk(TPACPI_DBG_INIT, "initializing beep subdriver\n");
5076
e0c7dfe7 5077 TPACPI_ACPIHANDLE_INIT(beep);
5fba344c 5078
fe08bc4b
HMH		 5079 vdbg_printk(TPACPI_DBG_INIT, "beep is %s\n",
5080 str_supported(beep_handle != NULL));
5081
5fba344c
HMH		 5082 return (beep_handle)? 0 : 1;
5083}
5084
78f81cc4
BD		 5085static int beep_read(char *p)
5086{
5087 int len = 0;
5088
5089 if (!beep_handle)
5090 len += sprintf(p + len, "status:\t\tnot supported\n");
5091 else {
5092 len += sprintf(p + len, "status:\t\tsupported\n");
5093 len += sprintf(p + len, "commands:\t<cmd> (<cmd> is 0-17)\n");
5094 }
5095
5096 return len;
5097}
5098
5099static int beep_write(char *buf)
5100{
5101 char *cmd;
5102 int beep_cmd;
5103
5104 if (!beep_handle)
5105 return -ENODEV;
5106
5107 while ((cmd = next_cmd(&buf))) {
5108 if (sscanf(cmd, "%u", &beep_cmd) == 1 &&
5109 beep_cmd >= 0 && beep_cmd <= 17) {
5110 /* beep_cmd set */
5111 } else
5112 return -EINVAL;
5113 if (!acpi_evalf(beep_handle, NULL, NULL, "vdd", beep_cmd, 0))
5114 return -EIO;
5115 }
5116
5117 return 0;
5118}
5119
a5763f22
HMH		 5120static struct ibm_struct beep_driver_data = {
5121 .name = "beep",
5122 .read = beep_read,
5123 .write = beep_write,
5124};
5125
56b6aeb0
HMH		 5126/*************************************************************************
5127 * Thermal subdriver
5128 */
78f81cc4 5129
f74a27d4
HMH		 5130enum thermal_access_mode {
5131 TPACPI_THERMAL_NONE = 0, /* No thermal support */
5132 TPACPI_THERMAL_ACPI_TMP07, /* Use ACPI TMP0-7 */
5133 TPACPI_THERMAL_ACPI_UPDT, /* Use ACPI TMP0-7 with UPDT */
5134 TPACPI_THERMAL_TPEC_8, /* Use ACPI EC regs, 8 sensors */
5135 TPACPI_THERMAL_TPEC_16, /* Use ACPI EC regs, 16 sensors */
5136};
5137
5138enum { /* TPACPI_THERMAL_TPEC_* */
5139 TP_EC_THERMAL_TMP0 = 0x78, /* ACPI EC regs TMP 0..7 */
5140 TP_EC_THERMAL_TMP8 = 0xC0, /* ACPI EC regs TMP 8..15 */
5141 TP_EC_THERMAL_TMP_NA = -128, /* ACPI EC sensor not available */
5142};
5143
5144#define TPACPI_MAX_THERMAL_SENSORS 16 /* Max thermal sensors supported */
5145struct ibm_thermal_sensors_struct {
5146 s32 temp[TPACPI_MAX_THERMAL_SENSORS];
5147};
5148
a26f878a 5149static enum thermal_access_mode thermal_read_mode;
78f81cc4 5150
b21a15f6
HMH		 5151/* idx is zero-based */
5152static int thermal_get_sensor(int idx, s32 *value)
5153{
5154 int t;
5155 s8 tmp;
5156 char tmpi[5];
5157
5158 t = TP_EC_THERMAL_TMP0;
5159
5160 switch (thermal_read_mode) {
5161#if TPACPI_MAX_THERMAL_SENSORS >= 16
5162 case TPACPI_THERMAL_TPEC_16:
5163 if (idx >= 8 && idx <= 15) {
5164 t = TP_EC_THERMAL_TMP8;
5165 idx -= 8;
5166 }
5167 /* fallthrough */
5168#endif
5169 case TPACPI_THERMAL_TPEC_8:
5170 if (idx <= 7) {
5171 if (!acpi_ec_read(t + idx, &tmp))
5172 return -EIO;
5173 *value = tmp * 1000;
5174 return 0;
5175 }
5176 break;
5177
5178 case TPACPI_THERMAL_ACPI_UPDT:
5179 if (idx <= 7) {
5180 snprintf(tmpi, sizeof(tmpi), "TMP%c", '0' + idx);
5181 if (!acpi_evalf(ec_handle, NULL, "UPDT", "v"))
5182 return -EIO;
5183 if (!acpi_evalf(ec_handle, &t, tmpi, "d"))
5184 return -EIO;
5185 *value = (t - 2732) * 100;
5186 return 0;
5187 }
5188 break;
5189
5190 case TPACPI_THERMAL_ACPI_TMP07:
5191 if (idx <= 7) {
5192 snprintf(tmpi, sizeof(tmpi), "TMP%c", '0' + idx);
5193 if (!acpi_evalf(ec_handle, &t, tmpi, "d"))
5194 return -EIO;
5195 if (t > 127 || t < -127)
5196 t = TP_EC_THERMAL_TMP_NA;
5197 *value = t * 1000;
5198 return 0;
5199 }
5200 break;
5201
5202 case TPACPI_THERMAL_NONE:
5203 default:
5204 return -ENOSYS;
5205 }
5206
5207 return -EINVAL;
5208}
5209
5210static int thermal_get_sensors(struct ibm_thermal_sensors_struct *s)
5211{
5212 int res, i;
5213 int n;
5214
5215 n = 8;
5216 i = 0;
5217
5218 if (!s)
5219 return -EINVAL;
5220
5221 if (thermal_read_mode == TPACPI_THERMAL_TPEC_16)
5222 n = 16;
5223
35ff8b9f 5224 for (i = 0 ; i < n; i++) {
b21a15f6
HMH		 5225 res = thermal_get_sensor(i, &s->temp[i]);
5226 if (res)
5227 return res;
5228 }
5229
5230 return n;
5231}
f74a27d4 5232
2c37aa4e
HMH		 5233/* sysfs temp##_input -------------------------------------------------- */
5234
5235static ssize_t thermal_temp_input_show(struct device *dev,
5236 struct device_attribute *attr,
5237 char *buf)
5238{
5239 struct sensor_device_attribute *sensor_attr =
5240 to_sensor_dev_attr(attr);
5241 int idx = sensor_attr->index;
5242 s32 value;
5243 int res;
5244
5245 res = thermal_get_sensor(idx, &value);
5246 if (res)
5247 return res;
5248 if (value == TP_EC_THERMAL_TMP_NA * 1000)
5249 return -ENXIO;
5250
5251 return snprintf(buf, PAGE_SIZE, "%d\n", value);
5252}
5253
5254#define THERMAL_SENSOR_ATTR_TEMP(_idxA, _idxB) \
35ff8b9f
HMH		 5255 SENSOR_ATTR(temp##_idxA##_input, S_IRUGO, \
5256 thermal_temp_input_show, NULL, _idxB)
2c37aa4e
HMH		 5257
5258static struct sensor_device_attribute sensor_dev_attr_thermal_temp_input[] = {
5259 THERMAL_SENSOR_ATTR_TEMP(1, 0),
5260 THERMAL_SENSOR_ATTR_TEMP(2, 1),
5261 THERMAL_SENSOR_ATTR_TEMP(3, 2),
5262 THERMAL_SENSOR_ATTR_TEMP(4, 3),
5263 THERMAL_SENSOR_ATTR_TEMP(5, 4),
5264 THERMAL_SENSOR_ATTR_TEMP(6, 5),
5265 THERMAL_SENSOR_ATTR_TEMP(7, 6),
5266 THERMAL_SENSOR_ATTR_TEMP(8, 7),
5267 THERMAL_SENSOR_ATTR_TEMP(9, 8),
5268 THERMAL_SENSOR_ATTR_TEMP(10, 9),
5269 THERMAL_SENSOR_ATTR_TEMP(11, 10),
5270 THERMAL_SENSOR_ATTR_TEMP(12, 11),
5271 THERMAL_SENSOR_ATTR_TEMP(13, 12),
5272 THERMAL_SENSOR_ATTR_TEMP(14, 13),
5273 THERMAL_SENSOR_ATTR_TEMP(15, 14),
5274 THERMAL_SENSOR_ATTR_TEMP(16, 15),
5275};
5276
5277#define THERMAL_ATTRS(X) \
5278 &sensor_dev_attr_thermal_temp_input[X].dev_attr.attr
5279
5280static struct attribute *thermal_temp_input_attr[] = {
5281 THERMAL_ATTRS(8),
5282 THERMAL_ATTRS(9),
5283 THERMAL_ATTRS(10),
5284 THERMAL_ATTRS(11),
5285 THERMAL_ATTRS(12),
5286 THERMAL_ATTRS(13),
5287 THERMAL_ATTRS(14),
5288 THERMAL_ATTRS(15),
5289 THERMAL_ATTRS(0),
5290 THERMAL_ATTRS(1),
5291 THERMAL_ATTRS(2),
5292 THERMAL_ATTRS(3),
5293 THERMAL_ATTRS(4),
5294 THERMAL_ATTRS(5),
5295 THERMAL_ATTRS(6),
5296 THERMAL_ATTRS(7),
5297 NULL
5298};
5299
5300static const struct attribute_group thermal_temp_input16_group = {
5301 .attrs = thermal_temp_input_attr
5302};
5303
5304static const struct attribute_group thermal_temp_input8_group = {
5305 .attrs = &thermal_temp_input_attr[8]
5306};
5307
5308#undef THERMAL_SENSOR_ATTR_TEMP
5309#undef THERMAL_ATTRS
5310
5311/* --------------------------------------------------------------------- */
5312
a5763f22 5313static int __init thermal_init(struct ibm_init_struct *iibm)
78f81cc4 5314{
60eb0b35
HMH		 5315 u8 t, ta1, ta2;
5316 int i;
5fba344c 5317 int acpi_tmp7;
2c37aa4e 5318 int res;
5fba344c 5319
fe08bc4b
HMH		 5320 vdbg_printk(TPACPI_DBG_INIT, "initializing thermal subdriver\n");
5321
5fba344c 5322 acpi_tmp7 = acpi_evalf(ec_handle, NULL, "TMP7", "qv");
60eb0b35 5323
3d6f99ca 5324 if (thinkpad_id.ec_model) {
60eb0b35
HMH		 5325 /*
5326 * Direct EC access mode: sensors at registers
5327 * 0x78-0x7F, 0xC0-0xC7. Registers return 0x00 for
5328 * non-implemented, thermal sensors return 0x80 when
5329 * not available
5330 */
78f81cc4 5331
60eb0b35
HMH		 5332 ta1 = ta2 = 0;
5333 for (i = 0; i < 8; i++) {
04cc862c 5334 if (acpi_ec_read(TP_EC_THERMAL_TMP0 + i, &t)) {
60eb0b35
HMH		 5335 ta1 |= t;
5336 } else {
5337 ta1 = 0;
5338 break;
5339 }
04cc862c 5340 if (acpi_ec_read(TP_EC_THERMAL_TMP8 + i, &t)) {
60eb0b35
HMH		 5341 ta2 |= t;
5342 } else {
5343 ta1 = 0;
5344 break;
5345 }
5346 }
5347 if (ta1 == 0) {
5348 /* This is sheer paranoia, but we handle it anyway */
5349 if (acpi_tmp7) {
e0c7dfe7 5350 printk(TPACPI_ERR
60eb0b35 5351 "ThinkPad ACPI EC access misbehaving, "
35ff8b9f
HMH		 5352 "falling back to ACPI TMPx access "
5353 "mode\n");
efa27145 5354 thermal_read_mode = TPACPI_THERMAL_ACPI_TMP07;
60eb0b35 5355 } else {
e0c7dfe7 5356 printk(TPACPI_ERR
60eb0b35
HMH		 5357 "ThinkPad ACPI EC access misbehaving, "
5358 "disabling thermal sensors access\n");
efa27145 5359 thermal_read_mode = TPACPI_THERMAL_NONE;
60eb0b35
HMH		 5360 }
5361 } else {
5362 thermal_read_mode =
5363 (ta2 != 0) ?
efa27145 5364 TPACPI_THERMAL_TPEC_16 : TPACPI_THERMAL_TPEC_8;
60eb0b35
HMH		 5365 }
5366 } else if (acpi_tmp7) {
a26f878a
HMH		 5367 if (acpi_evalf(ec_handle, NULL, "UPDT", "qv")) {
5368 /* 600e/x, 770e, 770x */
efa27145 5369 thermal_read_mode = TPACPI_THERMAL_ACPI_UPDT;
a26f878a
HMH		 5370 } else {
5371 /* Standard ACPI TMPx access, max 8 sensors */
efa27145 5372 thermal_read_mode = TPACPI_THERMAL_ACPI_TMP07;
a26f878a
HMH		 5373 }
5374 } else {
5375 /* temperatures not supported on 570, G4x, R30, R31, R32 */
efa27145 5376 thermal_read_mode = TPACPI_THERMAL_NONE;
a26f878a 5377 }
78f81cc4 5378
fe08bc4b
HMH		 5379 vdbg_printk(TPACPI_DBG_INIT, "thermal is %s, mode %d\n",
5380 str_supported(thermal_read_mode != TPACPI_THERMAL_NONE),
5381 thermal_read_mode);
5382
35ff8b9f 5383 switch (thermal_read_mode) {
2c37aa4e 5384 case TPACPI_THERMAL_TPEC_16:
7fd40029 5385 res = sysfs_create_group(&tpacpi_sensors_pdev->dev.kobj,
2c37aa4e
HMH		 5386 &thermal_temp_input16_group);
5387 if (res)
5388 return res;
5389 break;
5390 case TPACPI_THERMAL_TPEC_8:
5391 case TPACPI_THERMAL_ACPI_TMP07:
5392 case TPACPI_THERMAL_ACPI_UPDT:
7fd40029 5393 res = sysfs_create_group(&tpacpi_sensors_pdev->dev.kobj,
2c37aa4e
HMH		 5394 &thermal_temp_input8_group);
5395 if (res)
5396 return res;
5397 break;
5398 case TPACPI_THERMAL_NONE:
5399 default:
5400 return 1;
5401 }
5402
5403 return 0;
5404}
5405
5406static void thermal_exit(void)
5407{
35ff8b9f 5408 switch (thermal_read_mode) {
2c37aa4e 5409 case TPACPI_THERMAL_TPEC_16:
7fd40029 5410 sysfs_remove_group(&tpacpi_sensors_pdev->dev.kobj,
2c37aa4e
HMH		 5411 &thermal_temp_input16_group);
5412 break;
5413 case TPACPI_THERMAL_TPEC_8:
5414 case TPACPI_THERMAL_ACPI_TMP07:
5415 case TPACPI_THERMAL_ACPI_UPDT:
7fd40029 5416 sysfs_remove_group(&tpacpi_sensors_pdev->dev.kobj,
2c37aa4e
HMH		 5417 &thermal_temp_input16_group);
5418 break;
5419 case TPACPI_THERMAL_NONE:
5420 default:
5421 break;
5422 }
78f81cc4
BD		 5423}
5424
a26f878a
HMH		 5425static int thermal_read(char *p)
5426{
5427 int len = 0;
5428 int n, i;
5429 struct ibm_thermal_sensors_struct t;
5430
5431 n = thermal_get_sensors(&t);
5432 if (unlikely(n < 0))
5433 return n;
5434
5435 len += sprintf(p + len, "temperatures:\t");
5436
5437 if (n > 0) {
5438 for (i = 0; i < (n - 1); i++)
5439 len += sprintf(p + len, "%d ", t.temp[i] / 1000);
5440 len += sprintf(p + len, "%d\n", t.temp[i] / 1000);
5441 } else
5442 len += sprintf(p + len, "not supported\n");
78f81cc4
BD		 5443
5444 return len;
5445}
5446
a5763f22
HMH		 5447static struct ibm_struct thermal_driver_data = {
5448 .name = "thermal",
5449 .read = thermal_read,
2c37aa4e 5450 .exit = thermal_exit,
a5763f22
HMH		 5451};
5452
56b6aeb0
HMH		 5453/*************************************************************************
5454 * EC Dump subdriver
5455 */
5456
78f81cc4
BD		 5457static u8 ecdump_regs[256];
5458
5459static int ecdump_read(char *p)
5460{
5461 int len = 0;
5462 int i, j;
5463 u8 v;
5464
5465 len += sprintf(p + len, "EC "
5466 " +00 +01 +02 +03 +04 +05 +06 +07"
5467 " +08 +09 +0a +0b +0c +0d +0e +0f\n");
5468 for (i = 0; i < 256; i += 16) {
5469 len += sprintf(p + len, "EC 0x%02x:", i);
5470 for (j = 0; j < 16; j++) {
5471 if (!acpi_ec_read(i + j, &v))
5472 break;
5473 if (v != ecdump_regs[i + j])
5474 len += sprintf(p + len, " *%02x", v);
5475 else
5476 len += sprintf(p + len, " %02x", v);
5477 ecdump_regs[i + j] = v;
5478 }
5479 len += sprintf(p + len, "\n");
5480 if (j != 16)
5481 break;
5482 }
5483
5484 /* These are way too dangerous to advertise openly... */
5485#if 0
5486 len += sprintf(p + len, "commands:\t0x<offset> 0x<value>"
5487 " (<offset> is 00-ff, <value> is 00-ff)\n");
5488 len += sprintf(p + len, "commands:\t0x<offset> <value> "
5489 " (<offset> is 00-ff, <value> is 0-255)\n");
5490#endif
5491 return len;
5492}
5493
5494static int ecdump_write(char *buf)
5495{
5496 char *cmd;
5497 int i, v;
5498
5499 while ((cmd = next_cmd(&buf))) {
5500 if (sscanf(cmd, "0x%x 0x%x", &i, &v) == 2) {
5501 /* i and v set */
5502 } else if (sscanf(cmd, "0x%x %u", &i, &v) == 2) {
5503 /* i and v set */
5504 } else
5505 return -EINVAL;
5506 if (i >= 0 && i < 256 && v >= 0 && v < 256) {
5507 if (!acpi_ec_write(i, v))
1da177e4
LT		 5508 return -EIO;
5509 } else
5510 return -EINVAL;
5511 }
5512
5513 return 0;
78f81cc4
BD		 5514}
5515
a5763f22
HMH		 5516static struct ibm_struct ecdump_driver_data = {
5517 .name = "ecdump",
5518 .read = ecdump_read,
5519 .write = ecdump_write,
92641177 5520 .flags.experimental = 1,
a5763f22
HMH		 5521};
5522
56b6aeb0
HMH		 5523/*************************************************************************
5524 * Backlight/brightness subdriver
5525 */
5526
f74a27d4
HMH		 5527#define TPACPI_BACKLIGHT_DEV_NAME "thinkpad_screen"
5528
e11aecf1
HMH		 5529enum {
5530 TP_EC_BACKLIGHT = 0x31,
5531
5532 /* TP_EC_BACKLIGHT bitmasks */
5533 TP_EC_BACKLIGHT_LVLMSK = 0x1F,
5534 TP_EC_BACKLIGHT_CMDMSK = 0xE0,
5535 TP_EC_BACKLIGHT_MAPSW = 0x20,
5536};
5537
94954cc6 5538static struct backlight_device *ibm_backlight_device;
f74a27d4
HMH		 5539static int brightness_mode;
5540static unsigned int brightness_enable = 2; /* 2 = auto, 0 = no, 1 = yes */
5541
b21a15f6 5542static struct mutex brightness_mutex;
56b6aeb0 5543
b21a15f6
HMH		 5544/*
5545 * ThinkPads can read brightness from two places: EC 0x31, or
5546 * CMOS NVRAM byte 0x5E, bits 0-3.
e11aecf1
HMH		 5547 *
5548 * EC 0x31 has the following layout
5549 * Bit 7: unknown function
5550 * Bit 6: unknown function
5551 * Bit 5: Z: honour scale changes, NZ: ignore scale changes
5552 * Bit 4: must be set to zero to avoid problems
5553 * Bit 3-0: backlight brightness level
5554 *
5555 * brightness_get_raw returns status data in the EC 0x31 layout
b21a15f6 5556 */
e11aecf1 5557static int brightness_get_raw(int *status)
b21a15f6
HMH		 5558{
5559 u8 lec = 0, lcmos = 0, level = 0;
5560
5561 if (brightness_mode & 1) {
e11aecf1 5562 if (!acpi_ec_read(TP_EC_BACKLIGHT, &lec))
b21a15f6 5563 return -EIO;
e11aecf1 5564 level = lec & TP_EC_BACKLIGHT_LVLMSK;
b21a15f6
HMH		 5565 };
5566 if (brightness_mode & 2) {
5567 lcmos = (nvram_read_byte(TP_NVRAM_ADDR_BRIGHTNESS)
5568 & TP_NVRAM_MASK_LEVEL_BRIGHTNESS)
5569 >> TP_NVRAM_POS_LEVEL_BRIGHTNESS;
5570 lcmos &= (tp_features.bright_16levels)? 0x0f : 0x07;
5571 level = lcmos;
5572 }
5573
2d5e94d7 5574 if (brightness_mode == 3) {
e11aecf1
HMH		 5575 *status = lec; /* Prefer EC, CMOS is just a backing store */
5576 lec &= TP_EC_BACKLIGHT_LVLMSK;
2d5e94d7
HMH		 5577 if (lec == lcmos)
5578 tp_warned.bright_cmos_ec_unsync = 0;
5579 else {
5580 if (!tp_warned.bright_cmos_ec_unsync) {
5581 printk(TPACPI_ERR
5582 "CMOS NVRAM (%u) and EC (%u) do not "
5583 "agree on display brightness level\n",
5584 (unsigned int) lcmos,
5585 (unsigned int) lec);
5586 tp_warned.bright_cmos_ec_unsync = 1;
5587 }
5588 return -EIO;
5589 }
e11aecf1
HMH		 5590 } else {
5591 *status = level;
b21a15f6
HMH		 5592 }
5593
e11aecf1 5594 return 0;
b21a15f6
HMH		 5595}
5596
5597/* May return EINTR which can always be mapped to ERESTARTSYS */
5598static int brightness_set(int value)
5599{
5600 int cmos_cmd, inc, i, res;
5601 int current_value;
e11aecf1 5602 int command_bits;
b21a15f6 5603
e11aecf1
HMH		 5604 if (value > ((tp_features.bright_16levels)? 15 : 7) ||
5605 value < 0)
b21a15f6
HMH		 5606 return -EINVAL;
5607
7646ea88 5608 res = mutex_lock_killable(&brightness_mutex);
b21a15f6
HMH		 5609 if (res < 0)
5610 return res;
5611
e11aecf1
HMH		 5612 res = brightness_get_raw(&current_value);
5613 if (res < 0)
b21a15f6 5614 goto errout;
e11aecf1
HMH		 5615
5616 command_bits = current_value & TP_EC_BACKLIGHT_CMDMSK;
5617 current_value &= TP_EC_BACKLIGHT_LVLMSK;
b21a15f6
HMH		 5618
5619 cmos_cmd = value > current_value ?
5620 TP_CMOS_BRIGHTNESS_UP :
5621 TP_CMOS_BRIGHTNESS_DOWN;
5622 inc = (value > current_value)? 1 : -1;
5623
5624 res = 0;
5625 for (i = current_value; i != value; i += inc) {
5626 if ((brightness_mode & 2) &&
5627 issue_thinkpad_cmos_command(cmos_cmd)) {
5628 res = -EIO;
5629 goto errout;
5630 }
5631 if ((brightness_mode & 1) &&
e11aecf1
HMH		 5632 !acpi_ec_write(TP_EC_BACKLIGHT,
5633 (i + inc) | command_bits)) {
b21a15f6
HMH		 5634 res = -EIO;
5635 goto errout;;
5636 }
5637 }
5638
5639errout:
5640 mutex_unlock(&brightness_mutex);
5641 return res;
5642}
5643
5644/* sysfs backlight class ----------------------------------------------- */
5645
5646static int brightness_update_status(struct backlight_device *bd)
5647{
5648 /* it is the backlight class's job (caller) to handle
5649 * EINTR and other errors properly */
5650 return brightness_set(
5651 (bd->props.fb_blank == FB_BLANK_UNBLANK &&
5652 bd->props.power == FB_BLANK_UNBLANK) ?
5653 bd->props.brightness : 0);
5654}
5655
e11aecf1 5656static int brightness_get(struct backlight_device *bd)
a3f104c0 5657{
e11aecf1 5658 int status, res;
a3f104c0 5659
e11aecf1
HMH		 5660 res = brightness_get_raw(&status);
5661 if (res < 0)
5662 return 0; /* FIXME: teach backlight about error handling */
e11e211a 5663
e11aecf1 5664 return status & TP_EC_BACKLIGHT_LVLMSK;
e11e211a
HMH		 5665}
5666
b21a15f6 5667static struct backlight_ops ibm_backlight_data = {
35ff8b9f
HMH		 5668 .get_brightness = brightness_get,
5669 .update_status = brightness_update_status,
56b6aeb0 5670};
e11e211a 5671
b21a15f6 5672/* --------------------------------------------------------------------- */
e11e211a 5673
a5763f22 5674static int __init brightness_init(struct ibm_init_struct *iibm)
56b6aeb0
HMH		 5675{
5676 int b;
5677
fe08bc4b
HMH		 5678 vdbg_printk(TPACPI_DBG_INIT, "initializing brightness subdriver\n");
5679
f432255e
HMH		 5680 mutex_init(&brightness_mutex);
5681
b5972796
HMH		 5682 /*
5683 * We always attempt to detect acpi support, so as to switch
5684 * Lenovo Vista BIOS to ACPI brightness mode even if we are not
5685 * going to publish a backlight interface
5686 */
5687 b = tpacpi_check_std_acpi_brightness_support();
5688 if (b > 0) {
2dba1b5d
TR		 5689
5690 if (acpi_video_backlight_support()) {
5691 if (brightness_enable > 1) {
5692 printk(TPACPI_NOTICE
5693 "Standard ACPI backlight interface "
5694 "available, not loading native one.\n");
5695 return 1;
5696 } else if (brightness_enable == 1) {
5697 printk(TPACPI_NOTICE
5698 "Backlight control force enabled, even if standard "
5699 "ACPI backlight interface is available\n");
5700 }
5701 } else {
5702 if (brightness_enable > 1) {
5703 printk(TPACPI_NOTICE
5704 "Standard ACPI backlight interface not "
5705 "available, thinkpad_acpi native "
5706 "brightness control enabled\n");
5707 }
e11e211a 5708 }
87cc537a
HMH		 5709 }
5710
b5972796
HMH		 5711 if (!brightness_enable) {
5712 dbg_printk(TPACPI_DBG_INIT,
5713 "brightness support disabled by "
5714 "module parameter\n");
5715 return 1;
5716 }
5717
5718 if (b > 16) {
5719 printk(TPACPI_ERR
5720 "Unsupported brightness interface, "
5721 "please contact %s\n", TPACPI_MAIL);
5722 return 1;
5723 }
5724 if (b == 16)
5725 tp_features.bright_16levels = 1;
5726
24d3b774
HMH		 5727 if (!brightness_mode) {
5728 if (thinkpad_id.vendor == PCI_VENDOR_ID_LENOVO)
5729 brightness_mode = 2;
5730 else
5731 brightness_mode = 3;
5732
5733 dbg_printk(TPACPI_DBG_INIT, "selected brightness_mode=%d\n",
5734 brightness_mode);
5735 }
5736
5737 if (brightness_mode > 3)
5738 return -EINVAL;
5739
e11aecf1 5740 if (brightness_get_raw(&b) < 0)
24d3b774 5741 return 1;
56b6aeb0 5742
a3f104c0 5743 if (tp_features.bright_16levels)
35ff8b9f
HMH		 5744 printk(TPACPI_INFO
5745 "detected a 16-level brightness capable ThinkPad\n");
a3f104c0 5746
7d5a015e
HMH		 5747 ibm_backlight_device = backlight_device_register(
5748 TPACPI_BACKLIGHT_DEV_NAME, NULL, NULL,
5749 &ibm_backlight_data);
56b6aeb0 5750 if (IS_ERR(ibm_backlight_device)) {
e0c7dfe7 5751 printk(TPACPI_ERR "Could not register backlight device\n");
56b6aeb0
HMH		 5752 return PTR_ERR(ibm_backlight_device);
5753 }
fe08bc4b 5754 vdbg_printk(TPACPI_DBG_INIT, "brightness is supported\n");
56b6aeb0 5755
a3f104c0
HMH		 5756 ibm_backlight_device->props.max_brightness =
5757 (tp_features.bright_16levels)? 15 : 7;
e11aecf1 5758 ibm_backlight_device->props.brightness = b & TP_EC_BACKLIGHT_LVLMSK;
56b6aeb0
HMH		 5759 backlight_update_status(ibm_backlight_device);
5760
5761 return 0;
5762}
5763
5764static void brightness_exit(void)
5765{
5766 if (ibm_backlight_device) {
fe08bc4b
HMH		 5767 vdbg_printk(TPACPI_DBG_EXIT,
5768 "calling backlight_device_unregister()\n");
56b6aeb0 5769 backlight_device_unregister(ibm_backlight_device);
56b6aeb0
HMH		 5770 }
5771}
5772
56b6aeb0
HMH		 5773static int brightness_read(char *p)
5774{
5775 int len = 0;
5776 int level;
5777
35ff8b9f
HMH		 5778 level = brightness_get(NULL);
5779 if (level < 0) {
56b6aeb0
HMH		 5780 len += sprintf(p + len, "level:\t\tunreadable\n");
5781 } else {
a3f104c0 5782 len += sprintf(p + len, "level:\t\t%d\n", level);
56b6aeb0
HMH		 5783 len += sprintf(p + len, "commands:\tup, down\n");
5784 len += sprintf(p + len, "commands:\tlevel <level>"
a3f104c0
HMH		 5785 " (<level> is 0-%d)\n",
5786 (tp_features.bright_16levels) ? 15 : 7);
56b6aeb0
HMH		 5787 }
5788
5789 return len;
5790}
5791
8acb0250
HM		 5792static int brightness_write(char *buf)
5793{
5794 int level;
4273af8d 5795 int rc;
1da177e4 5796 char *cmd;
a3f104c0 5797 int max_level = (tp_features.bright_16levels) ? 15 : 7;
1da177e4 5798
4273af8d
HMH		 5799 level = brightness_get(NULL);
5800 if (level < 0)
5801 return level;
78f81cc4 5802
4273af8d 5803 while ((cmd = next_cmd(&buf))) {
78f81cc4 5804 if (strlencmp(cmd, "up") == 0) {
4273af8d
HMH		 5805 if (level < max_level)
5806 level++;
78f81cc4 5807 } else if (strlencmp(cmd, "down") == 0) {
4273af8d
HMH		 5808 if (level > 0)
5809 level--;
5810 } else if (sscanf(cmd, "level %d", &level) == 1 &&
5811 level >= 0 && level <= max_level) {
5812 /* new level set */
78f81cc4
BD		 5813 } else
5814 return -EINVAL;
78f81cc4
BD		 5815 }
5816
4273af8d
HMH		 5817 /*
5818 * Now we know what the final level should be, so we try to set it.
5819 * Doing it this way makes the syscall restartable in case of EINTR
5820 */
5821 rc = brightness_set(level);
5822 return (rc == -EINTR)? ERESTARTSYS : rc;
78f81cc4
BD		 5823}
5824
a5763f22
HMH		 5825static struct ibm_struct brightness_driver_data = {
5826 .name = "brightness",
5827 .read = brightness_read,
5828 .write = brightness_write,
5829 .exit = brightness_exit,
5830};
5831
56b6aeb0
HMH		 5832/*************************************************************************
5833 * Volume subdriver
5834 */
fb87a811 5835
f74a27d4
HMH		 5836static int volume_offset = 0x30;
5837
78f81cc4
BD		 5838static int volume_read(char *p)
5839{
5840 int len = 0;
5841 u8 level;
5842
5843 if (!acpi_ec_read(volume_offset, &level)) {
5844 len += sprintf(p + len, "level:\t\tunreadable\n");
5845 } else {
5846 len += sprintf(p + len, "level:\t\t%d\n", level & 0xf);
5847 len += sprintf(p + len, "mute:\t\t%s\n", onoff(level, 6));
5848 len += sprintf(p + len, "commands:\tup, down, mute\n");
5849 len += sprintf(p + len, "commands:\tlevel <level>"
5850 " (<level> is 0-15)\n");
5851 }
5852
5853 return len;
5854}
5855
78f81cc4
BD		 5856static int volume_write(char *buf)
5857{
5858 int cmos_cmd, inc, i;
5859 u8 level, mute;
5860 int new_level, new_mute;
5861 char *cmd;
5862
5863 while ((cmd = next_cmd(&buf))) {
5864 if (!acpi_ec_read(volume_offset, &level))
5865 return -EIO;
5866 new_mute = mute = level & 0x40;
5867 new_level = level = level & 0xf;
5868
5869 if (strlencmp(cmd, "up") == 0) {
5870 if (mute)
5871 new_mute = 0;
5872 else
5873 new_level = level == 15 ? 15 : level + 1;
5874 } else if (strlencmp(cmd, "down") == 0) {
5875 if (mute)
5876 new_mute = 0;
5877 else
5878 new_level = level == 0 ? 0 : level - 1;
5879 } else if (sscanf(cmd, "level %d", &new_level) == 1 &&
5880 new_level >= 0 && new_level <= 15) {
5881 /* new_level set */
5882 } else if (strlencmp(cmd, "mute") == 0) {
5883 new_mute = 0x40;
1da177e4
LT		 5884 } else
5885 return -EINVAL;
5886
35ff8b9f
HMH		 5887 if (new_level != level) {
5888 /* mute doesn't change */
5889
5890 cmos_cmd = (new_level > level) ?
5891 TP_CMOS_VOLUME_UP : TP_CMOS_VOLUME_DOWN;
78f81cc4
BD		 5892 inc = new_level > level ? 1 : -1;
5893
c9bea99c 5894 if (mute && (issue_thinkpad_cmos_command(cmos_cmd) ||
78f81cc4
BD		 5895 !acpi_ec_write(volume_offset, level)))
5896 return -EIO;
5897
5898 for (i = level; i != new_level; i += inc)
c9bea99c 5899 if (issue_thinkpad_cmos_command(cmos_cmd) ||
78f81cc4
BD		 5900 !acpi_ec_write(volume_offset, i + inc))
5901 return -EIO;
5902
35ff8b9f
HMH		 5903 if (mute &&
5904 (issue_thinkpad_cmos_command(TP_CMOS_VOLUME_MUTE) ||
5905 !acpi_ec_write(volume_offset, new_level + mute))) {
78f81cc4 5906 return -EIO;
35ff8b9f 5907 }
78f81cc4
BD		 5908 }
5909
35ff8b9f
HMH		 5910 if (new_mute != mute) {
5911 /* level doesn't change */
5912
5913 cmos_cmd = (new_mute) ?
5914 TP_CMOS_VOLUME_MUTE : TP_CMOS_VOLUME_UP;
78f81cc4 5915
c9bea99c 5916 if (issue_thinkpad_cmos_command(cmos_cmd) ||
78f81cc4
BD		 5917 !acpi_ec_write(volume_offset, level + new_mute))
5918 return -EIO;
5919 }
5920 }
5921
5922 return 0;
5923}
5924
a5763f22
HMH		 5925static struct ibm_struct volume_driver_data = {
5926 .name = "volume",
5927 .read = volume_read,
5928 .write = volume_write,
5929};
56b6aeb0
HMH		 5930
5931/*************************************************************************
5932 * Fan subdriver
5933 */
5934
5935/*
5936 * FAN ACCESS MODES
5937 *
efa27145 5938 * TPACPI_FAN_RD_ACPI_GFAN:
56b6aeb0
HMH		 5939 * ACPI GFAN method: returns fan level
5940 *
efa27145 5941 * see TPACPI_FAN_WR_ACPI_SFAN
f51d1a39 5942 * EC 0x2f (HFSP) not available if GFAN exists
56b6aeb0 5943 *
efa27145 5944 * TPACPI_FAN_WR_ACPI_SFAN:
56b6aeb0
HMH		 5945 * ACPI SFAN method: sets fan level, 0 (stop) to 7 (max)
5946 *
f51d1a39
HMH		 5947 * EC 0x2f (HFSP) might be available *for reading*, but do not use
5948 * it for writing.
56b6aeb0 5949 *
efa27145 5950 * TPACPI_FAN_WR_TPEC:
f51d1a39
HMH		 5951 * ThinkPad EC register 0x2f (HFSP): fan control loop mode
5952 * Supported on almost all ThinkPads
56b6aeb0
HMH		 5953 *
5954 * Fan speed changes of any sort (including those caused by the
5955 * disengaged mode) are usually done slowly by the firmware as the
5956 * maximum ammount of fan duty cycle change per second seems to be
5957 * limited.
5958 *
5959 * Reading is not available if GFAN exists.
5960 * Writing is not available if SFAN exists.
5961 *
5962 * Bits
5963 * 7 automatic mode engaged;
5964 * (default operation mode of the ThinkPad)
5965 * fan level is ignored in this mode.
f51d1a39 5966 * 6 full speed mode (takes precedence over bit 7);
56b6aeb0 5967 * not available on all thinkpads. May disable
f51d1a39
HMH		 5968 * the tachometer while the fan controller ramps up
5969 * the speed (which can take up to a few *minutes*).
5970 * Speeds up fan to 100% duty-cycle, which is far above
5971 * the standard RPM levels. It is not impossible that
5972 * it could cause hardware damage.
56b6aeb0
HMH		 5973 * 5-3 unused in some models. Extra bits for fan level
5974 * in others, but still useless as all values above
5975 * 7 map to the same speed as level 7 in these models.
5976 * 2-0 fan level (0..7 usually)
5977 * 0x00 = stop
5978 * 0x07 = max (set when temperatures critical)
5979 * Some ThinkPads may have other levels, see
efa27145 5980 * TPACPI_FAN_WR_ACPI_FANS (X31/X40/X41)
56b6aeb0
HMH		 5981 *
5982 * FIRMWARE BUG: on some models, EC 0x2f might not be initialized at
5983 * boot. Apparently the EC does not intialize it, so unless ACPI DSDT
5984 * does so, its initial value is meaningless (0x07).
5985 *
5986 * For firmware bugs, refer to:
5987 * http://thinkwiki.org/wiki/Embedded_Controller_Firmware#Firmware_Issues
5988 *
5989 * ----
5990 *
5991 * ThinkPad EC register 0x84 (LSB), 0x85 (MSB):
5992 * Main fan tachometer reading (in RPM)
5993 *
5994 * This register is present on all ThinkPads with a new-style EC, and
5995 * it is known not to be present on the A21m/e, and T22, as there is
5996 * something else in offset 0x84 according to the ACPI DSDT. Other
5997 * ThinkPads from this same time period (and earlier) probably lack the
5998 * tachometer as well.
5999 *
6000 * Unfortunately a lot of ThinkPads with new-style ECs but whose firwmare
6001 * was never fixed by IBM to report the EC firmware version string
6002 * probably support the tachometer (like the early X models), so
6003 * detecting it is quite hard. We need more data to know for sure.
6004 *
6005 * FIRMWARE BUG: always read 0x84 first, otherwise incorrect readings
6006 * might result.
6007 *
f51d1a39
HMH		 6008 * FIRMWARE BUG: may go stale while the EC is switching to full speed
6009 * mode.
56b6aeb0
HMH		 6010 *
6011 * For firmware bugs, refer to:
6012 * http://thinkwiki.org/wiki/Embedded_Controller_Firmware#Firmware_Issues
6013 *
efa27145 6014 * TPACPI_FAN_WR_ACPI_FANS:
56b6aeb0
HMH		 6015 * ThinkPad X31, X40, X41. Not available in the X60.
6016 *
6017 * FANS ACPI handle: takes three arguments: low speed, medium speed,
6018 * high speed. ACPI DSDT seems to map these three speeds to levels
6019 * as follows: STOP LOW LOW MED MED HIGH HIGH HIGH HIGH
6020 * (this map is stored on FAN0..FAN8 as "0,1,1,2,2,3,3,3,3")
6021 *
6022 * The speeds are stored on handles
6023 * (FANA:FAN9), (FANC:FANB), (FANE:FAND).
6024 *
6025 * There are three default speed sets, acessible as handles:
6026 * FS1L,FS1M,FS1H; FS2L,FS2M,FS2H; FS3L,FS3M,FS3H
6027 *
6028 * ACPI DSDT switches which set is in use depending on various
6029 * factors.
6030 *
efa27145 6031 * TPACPI_FAN_WR_TPEC is also available and should be used to
56b6aeb0
HMH		 6032 * command the fan. The X31/X40/X41 seems to have 8 fan levels,
6033 * but the ACPI tables just mention level 7.
6034 */
6035
f74a27d4
HMH		 6036enum { /* Fan control constants */
6037 fan_status_offset = 0x2f, /* EC register 0x2f */
6038 fan_rpm_offset = 0x84, /* EC register 0x84: LSB, 0x85 MSB (RPM)
6039 * 0x84 must be read before 0x85 */
6040
6041 TP_EC_FAN_FULLSPEED = 0x40, /* EC fan mode: full speed */
6042 TP_EC_FAN_AUTO = 0x80, /* EC fan mode: auto fan control */
6043
6044 TPACPI_FAN_LAST_LEVEL = 0x100, /* Use cached last-seen fan level */
6045};
6046
6047enum fan_status_access_mode {
6048 TPACPI_FAN_NONE = 0, /* No fan status or control */
6049 TPACPI_FAN_RD_ACPI_GFAN, /* Use ACPI GFAN */
6050 TPACPI_FAN_RD_TPEC, /* Use ACPI EC regs 0x2f, 0x84-0x85 */
6051};
6052
6053enum fan_control_access_mode {
6054 TPACPI_FAN_WR_NONE = 0, /* No fan control */
6055 TPACPI_FAN_WR_ACPI_SFAN, /* Use ACPI SFAN */
6056 TPACPI_FAN_WR_TPEC, /* Use ACPI EC reg 0x2f */
6057 TPACPI_FAN_WR_ACPI_FANS, /* Use ACPI FANS and EC reg 0x2f */
6058};
6059
6060enum fan_control_commands {
6061 TPACPI_FAN_CMD_SPEED = 0x0001, /* speed command */
6062 TPACPI_FAN_CMD_LEVEL = 0x0002, /* level command */
6063 TPACPI_FAN_CMD_ENABLE = 0x0004, /* enable/disable cmd,
6064 * and also watchdog cmd */
6065};
6066
6067static int fan_control_allowed;
6068
69ba91cb
HMH		 6069static enum fan_status_access_mode fan_status_access_mode;
6070static enum fan_control_access_mode fan_control_access_mode;
6071static enum fan_control_commands fan_control_commands;
78f81cc4 6072
778b4d74 6073static u8 fan_control_initial_status;
fe98a52c 6074static u8 fan_control_desired_level;
0081b162 6075static u8 fan_control_resume_level;
f74a27d4
HMH		 6076static int fan_watchdog_maxinterval;
6077
6078static struct mutex fan_mutex;
778b4d74 6079
25c68a33 6080static void fan_watchdog_fire(struct work_struct *ignored);
25c68a33 6081static DECLARE_DELAYED_WORK(fan_watchdog_task, fan_watchdog_fire);
16663a87 6082
e0c7dfe7
HMH		 6083TPACPI_HANDLE(fans, ec, "FANS"); /* X31, X40, X41 */
6084TPACPI_HANDLE(gfan, ec, "GFAN", /* 570 */
56b6aeb0
HMH		 6085 "\\FSPD", /* 600e/x, 770e, 770x */
6086 ); /* all others */
e0c7dfe7 6087TPACPI_HANDLE(sfan, ec, "SFAN", /* 570 */
56b6aeb0
HMH		 6088 "JFNS", /* 770x-JL */
6089 ); /* all others */
6090
1c2ece75
HMH		 6091/*
6092 * Unitialized HFSP quirk: ACPI DSDT and EC fail to initialize the
6093 * HFSP register at boot, so it contains 0x07 but the Thinkpad could
6094 * be in auto mode (0x80).
6095 *
6096 * This is corrected by any write to HFSP either by the driver, or
6097 * by the firmware.
6098 *
6099 * We assume 0x07 really means auto mode while this quirk is active,
6100 * as this is far more likely than the ThinkPad being in level 7,
6101 * which is only used by the firmware during thermal emergencies.
6102 */
6103
6104static void fan_quirk1_detect(void)
6105{
6106 /* In some ThinkPads, neither the EC nor the ACPI
6107 * DSDT initialize the HFSP register, and it ends up
6108 * being initially set to 0x07 when it *could* be
6109 * either 0x07 or 0x80.
6110 *
6111 * Enable for TP-1Y (T43), TP-78 (R51e),
6112 * TP-76 (R52), TP-70 (T43, R52), which are known
6113 * to be buggy. */
6114 if (fan_control_initial_status == 0x07) {
6115 switch (thinkpad_id.ec_model) {
6116 case 0x5931: /* TP-1Y */
6117 case 0x3837: /* TP-78 */
6118 case 0x3637: /* TP-76 */
6119 case 0x3037: /* TP-70 */
6120 printk(TPACPI_NOTICE
6121 "fan_init: initial fan status is unknown, "
6122 "assuming it is in auto mode\n");
6123 tp_features.fan_ctrl_status_undef = 1;
6124 ;;
6125 }
6126 }
6127}
6128
6129static void fan_quirk1_handle(u8 *fan_status)
6130{
6131 if (unlikely(tp_features.fan_ctrl_status_undef)) {
6132 if (*fan_status != fan_control_initial_status) {
6133 /* something changed the HFSP regisnter since
6134 * driver init time, so it is not undefined
6135 * anymore */
6136 tp_features.fan_ctrl_status_undef = 0;
6137 } else {
6138 /* Return most likely status. In fact, it
6139 * might be the only possible status */
6140 *fan_status = TP_EC_FAN_AUTO;
6141 }
6142 }
6143}
6144
fe98a52c 6145/*
b21a15f6 6146 * Call with fan_mutex held
fe98a52c 6147 */
b21a15f6 6148static void fan_update_desired_level(u8 status)
fe98a52c 6149{
b21a15f6
HMH		 6150 if ((status &
6151 (TP_EC_FAN_AUTO | TP_EC_FAN_FULLSPEED)) == 0) {
6152 if (status > 7)
6153 fan_control_desired_level = 7;
6154 else
6155 fan_control_desired_level = status;
6156 }
6157}
fe98a52c 6158
b21a15f6
HMH		 6159static int fan_get_status(u8 *status)
6160{
6161 u8 s;
fe98a52c 6162
b21a15f6
HMH		 6163 /* TODO:
6164 * Add TPACPI_FAN_RD_ACPI_FANS ? */
fe98a52c 6165
b21a15f6
HMH		 6166 switch (fan_status_access_mode) {
6167 case TPACPI_FAN_RD_ACPI_GFAN:
6168 /* 570, 600e/x, 770e, 770x */
fe98a52c 6169
b21a15f6
HMH		 6170 if (unlikely(!acpi_evalf(gfan_handle, &s, NULL, "d")))
6171 return -EIO;
fe98a52c 6172
b21a15f6
HMH		 6173 if (likely(status))
6174 *status = s & 0x07;
fe98a52c 6175
b21a15f6
HMH		 6176 break;
6177
6178 case TPACPI_FAN_RD_TPEC:
6179 /* all except 570, 600e/x, 770e, 770x */
6180 if (unlikely(!acpi_ec_read(fan_status_offset, &s)))
6181 return -EIO;
6182
1c2ece75 6183 if (likely(status)) {
b21a15f6 6184 *status = s;
1c2ece75
HMH		 6185 fan_quirk1_handle(status);
6186 }
fe98a52c 6187
fe98a52c 6188 break;
b21a15f6 6189
fe98a52c 6190 default:
b21a15f6 6191 return -ENXIO;
fe98a52c
HMH		 6192 }
6193
b21a15f6
HMH		 6194 return 0;
6195}
fe98a52c 6196
b21a15f6
HMH		 6197static int fan_get_status_safe(u8 *status)
6198{
6199 int rc;
6200 u8 s;
fe98a52c 6201
7646ea88 6202 if (mutex_lock_killable(&fan_mutex))
b21a15f6
HMH		 6203 return -ERESTARTSYS;
6204 rc = fan_get_status(&s);
6205 if (!rc)
6206 fan_update_desired_level(s);
6207 mutex_unlock(&fan_mutex);
fe98a52c 6208
b21a15f6
HMH		 6209 if (status)
6210 *status = s;
fe98a52c 6211
b21a15f6
HMH		 6212 return rc;
6213}
6214
6215static int fan_get_speed(unsigned int *speed)
fe98a52c 6216{
b21a15f6 6217 u8 hi, lo;
fe98a52c 6218
b21a15f6
HMH		 6219 switch (fan_status_access_mode) {
6220 case TPACPI_FAN_RD_TPEC:
6221 /* all except 570, 600e/x, 770e, 770x */
6222 if (unlikely(!acpi_ec_read(fan_rpm_offset, &lo) ||
6223 !acpi_ec_read(fan_rpm_offset + 1, &hi)))
6224 return -EIO;
fe98a52c 6225
b21a15f6
HMH		 6226 if (likely(speed))
6227 *speed = (hi << 8) | lo;
fe98a52c 6228
b21a15f6 6229 break;
fe98a52c 6230
b21a15f6
HMH		 6231 default:
6232 return -ENXIO;
6233 }
fe98a52c 6234
b21a15f6 6235 return 0;
fe98a52c
HMH		 6236}
6237
b21a15f6 6238static int fan_set_level(int level)
fe98a52c 6239{
b21a15f6
HMH		 6240 if (!fan_control_allowed)
6241 return -EPERM;
fe98a52c 6242
b21a15f6
HMH		 6243 switch (fan_control_access_mode) {
6244 case TPACPI_FAN_WR_ACPI_SFAN:
6245 if (level >= 0 && level <= 7) {
6246 if (!acpi_evalf(sfan_handle, NULL, NULL, "vd", level))
6247 return -EIO;
6248 } else
6249 return -EINVAL;
6250 break;
fe98a52c 6251
b21a15f6
HMH		 6252 case TPACPI_FAN_WR_ACPI_FANS:
6253 case TPACPI_FAN_WR_TPEC:
0081b162
HMH		 6254 if (!(level & TP_EC_FAN_AUTO) &&
6255 !(level & TP_EC_FAN_FULLSPEED) &&
b21a15f6
HMH		 6256 ((level < 0) || (level > 7)))
6257 return -EINVAL;
fe98a52c 6258
b21a15f6
HMH		 6259 /* safety net should the EC not support AUTO
6260 * or FULLSPEED mode bits and just ignore them */
6261 if (level & TP_EC_FAN_FULLSPEED)
6262 level |= 7; /* safety min speed 7 */
547266e4 6263 else if (level & TP_EC_FAN_AUTO)
b21a15f6 6264 level |= 4; /* safety min speed 4 */
fe98a52c 6265
b21a15f6
HMH		 6266 if (!acpi_ec_write(fan_status_offset, level))
6267 return -EIO;
6268 else
6269 tp_features.fan_ctrl_status_undef = 0;
6270 break;
fe98a52c 6271
b21a15f6
HMH		 6272 default:
6273 return -ENXIO;
6274 }
74a60c0f
HMH		 6275
6276 vdbg_printk(TPACPI_DBG_FAN,
6277 "fan control: set fan control register to 0x%02x\n", level);
b21a15f6 6278 return 0;
fe98a52c
HMH		 6279}
6280
b21a15f6 6281static int fan_set_level_safe(int level)
fe98a52c 6282{
b21a15f6 6283 int rc;
fe98a52c 6284
b21a15f6
HMH		 6285 if (!fan_control_allowed)
6286 return -EPERM;
fe98a52c 6287
7646ea88 6288 if (mutex_lock_killable(&fan_mutex))
b21a15f6 6289 return -ERESTARTSYS;
fe98a52c 6290
b21a15f6
HMH		 6291 if (level == TPACPI_FAN_LAST_LEVEL)
6292 level = fan_control_desired_level;
fe98a52c 6293
b21a15f6
HMH		 6294 rc = fan_set_level(level);
6295 if (!rc)
6296 fan_update_desired_level(level);
6297
6298 mutex_unlock(&fan_mutex);
6299 return rc;
fe98a52c
HMH		 6300}
6301
b21a15f6 6302static int fan_set_enable(void)
fe98a52c 6303{
b21a15f6
HMH		 6304 u8 s;
6305 int rc;
fe98a52c 6306
ecf2a80a
HMH		 6307 if (!fan_control_allowed)
6308 return -EPERM;
6309
7646ea88 6310 if (mutex_lock_killable(&fan_mutex))
b21a15f6 6311 return -ERESTARTSYS;
fe98a52c 6312
b21a15f6
HMH		 6313 switch (fan_control_access_mode) {
6314 case TPACPI_FAN_WR_ACPI_FANS:
6315 case TPACPI_FAN_WR_TPEC:
6316 rc = fan_get_status(&s);
6317 if (rc < 0)
6318 break;
fe98a52c 6319
b21a15f6
HMH		 6320 /* Don't go out of emergency fan mode */
6321 if (s != 7) {
6322 s &= 0x07;
6323 s |= TP_EC_FAN_AUTO | 4; /* min fan speed 4 */
6324 }
fe98a52c 6325
b21a15f6
HMH		 6326 if (!acpi_ec_write(fan_status_offset, s))
6327 rc = -EIO;
6328 else {
6329 tp_features.fan_ctrl_status_undef = 0;
6330 rc = 0;
6331 }
6332 break;
fe98a52c 6333
b21a15f6
HMH		 6334 case TPACPI_FAN_WR_ACPI_SFAN:
6335 rc = fan_get_status(&s);
6336 if (rc < 0)
6337 break;
fe98a52c 6338
b21a15f6 6339 s &= 0x07;
fe98a52c 6340
b21a15f6
HMH		 6341 /* Set fan to at least level 4 */
6342 s |= 4;
fe08bc4b 6343
b21a15f6 6344 if (!acpi_evalf(sfan_handle, NULL, NULL, "vd", s))
35ff8b9f 6345 rc = -EIO;
b21a15f6
HMH		 6346 else
6347 rc = 0;
6348 break;
78f81cc4 6349
b21a15f6
HMH		 6350 default:
6351 rc = -ENXIO;
6352 }
5fba344c 6353
b21a15f6 6354 mutex_unlock(&fan_mutex);
74a60c0f
HMH		 6355
6356 if (!rc)
6357 vdbg_printk(TPACPI_DBG_FAN,
6358 "fan control: set fan control register to 0x%02x\n",
6359 s);
b21a15f6 6360 return rc;
69ba91cb 6361}
78f81cc4 6362
b21a15f6 6363static int fan_set_disable(void)
78f81cc4 6364{
b21a15f6 6365 int rc;
c52f0aa5 6366
b21a15f6
HMH		 6367 if (!fan_control_allowed)
6368 return -EPERM;
78f81cc4 6369
7646ea88 6370 if (mutex_lock_killable(&fan_mutex))
b21a15f6 6371 return -ERESTARTSYS;
3ef8a609 6372
b21a15f6
HMH		 6373 rc = 0;
6374 switch (fan_control_access_mode) {
6375 case TPACPI_FAN_WR_ACPI_FANS:
6376 case TPACPI_FAN_WR_TPEC:
6377 if (!acpi_ec_write(fan_status_offset, 0x00))
6378 rc = -EIO;
6379 else {
6380 fan_control_desired_level = 0;
6381 tp_features.fan_ctrl_status_undef = 0;
6382 }
3ef8a609
HMH		 6383 break;
6384
b21a15f6
HMH		 6385 case TPACPI_FAN_WR_ACPI_SFAN:
6386 if (!acpi_evalf(sfan_handle, NULL, NULL, "vd", 0x00))
6387 rc = -EIO;
6388 else
6389 fan_control_desired_level = 0;
c52f0aa5
HMH		 6390 break;
6391
6392 default:
b21a15f6 6393 rc = -ENXIO;
78f81cc4
BD		 6394 }
6395
74a60c0f
HMH		 6396 if (!rc)
6397 vdbg_printk(TPACPI_DBG_FAN,
6398 "fan control: set fan control register to 0\n");
fe98a52c 6399
fe98a52c 6400 mutex_unlock(&fan_mutex);
fe98a52c
HMH		 6401 return rc;
6402}
6403
b21a15f6 6404static int fan_set_speed(int speed)
c52f0aa5 6405{
b21a15f6 6406 int rc;
c52f0aa5 6407
b21a15f6
HMH		 6408 if (!fan_control_allowed)
6409 return -EPERM;
3ef8a609 6410
7646ea88 6411 if (mutex_lock_killable(&fan_mutex))
b21a15f6 6412 return -ERESTARTSYS;
c52f0aa5 6413
b21a15f6
HMH		 6414 rc = 0;
6415 switch (fan_control_access_mode) {
6416 case TPACPI_FAN_WR_ACPI_FANS:
6417 if (speed >= 0 && speed <= 65535) {
6418 if (!acpi_evalf(fans_handle, NULL, NULL, "vddd",
6419 speed, speed, speed))
6420 rc = -EIO;
6421 } else
6422 rc = -EINVAL;
c52f0aa5
HMH		 6423 break;
6424
6425 default:
b21a15f6 6426 rc = -ENXIO;
c52f0aa5
HMH		 6427 }
6428
b21a15f6
HMH		 6429 mutex_unlock(&fan_mutex);
6430 return rc;
16663a87
HMH		 6431}
6432
6433static void fan_watchdog_reset(void)
6434{
94954cc6 6435 static int fan_watchdog_active;
16663a87 6436
4985cd0a
HMH		 6437 if (fan_control_access_mode == TPACPI_FAN_WR_NONE)
6438 return;
6439
16663a87
HMH		 6440 if (fan_watchdog_active)
6441 cancel_delayed_work(&fan_watchdog_task);
6442
8fef502e
HMH		 6443 if (fan_watchdog_maxinterval > 0 &&
6444 tpacpi_lifecycle != TPACPI_LIFE_EXITING) {
16663a87 6445 fan_watchdog_active = 1;
e0e3c061 6446 if (!queue_delayed_work(tpacpi_wq, &fan_watchdog_task,
16663a87
HMH		 6447 msecs_to_jiffies(fan_watchdog_maxinterval
6448 * 1000))) {
35ff8b9f 6449 printk(TPACPI_ERR
e0e3c061 6450 "failed to queue the fan watchdog, "
16663a87
HMH		 6451 "watchdog will not trigger\n");
6452 }
6453 } else
6454 fan_watchdog_active = 0;
6455}
6456
b21a15f6 6457static void fan_watchdog_fire(struct work_struct *ignored)
78f81cc4 6458{
b21a15f6 6459 int rc;
18ad7996 6460
b21a15f6
HMH		 6461 if (tpacpi_lifecycle != TPACPI_LIFE_RUNNING)
6462 return;
a12095c2 6463
e0c7dfe7 6464 printk(TPACPI_NOTICE "fan watchdog: enabling fan\n");
b21a15f6
HMH		 6465 rc = fan_set_enable();
6466 if (rc < 0) {
e0c7dfe7 6467 printk(TPACPI_ERR "fan watchdog: error %d while enabling fan, "
b21a15f6
HMH		 6468 "will try again later...\n", -rc);
6469 /* reschedule for later */
6470 fan_watchdog_reset();
6471 }
6472}
eaa7571b 6473
b21a15f6
HMH		 6474/*
6475 * SYSFS fan layout: hwmon compatible (device)
6476 *
6477 * pwm*_enable:
6478 * 0: "disengaged" mode
6479 * 1: manual mode
6480 * 2: native EC "auto" mode (recommended, hardware default)
6481 *
6482 * pwm*: set speed in manual mode, ignored otherwise.
6483 * 0 is level 0; 255 is level 7. Intermediate points done with linear
6484 * interpolation.
6485 *
6486 * fan*_input: tachometer reading, RPM
6487 *
6488 *
6489 * SYSFS fan layout: extensions
6490 *
6491 * fan_watchdog (driver):
6492 * fan watchdog interval in seconds, 0 disables (default), max 120
6493 */
6494
6495/* sysfs fan pwm1_enable ----------------------------------------------- */
6496static ssize_t fan_pwm1_enable_show(struct device *dev,
6497 struct device_attribute *attr,
6498 char *buf)
6499{
6500 int res, mode;
6501 u8 status;
6502
6503 res = fan_get_status_safe(&status);
6504 if (res)
6505 return res;
6506
b21a15f6
HMH		 6507 if (status & TP_EC_FAN_FULLSPEED) {
6508 mode = 0;
6509 } else if (status & TP_EC_FAN_AUTO) {
6510 mode = 2;
6511 } else
6512 mode = 1;
6513
6514 return snprintf(buf, PAGE_SIZE, "%d\n", mode);
6515}
a12095c2 6516
b21a15f6
HMH		 6517static ssize_t fan_pwm1_enable_store(struct device *dev,
6518 struct device_attribute *attr,
6519 const char *buf, size_t count)
6520{
6521 unsigned long t;
6522 int res, level;
6523
6524 if (parse_strtoul(buf, 2, &t))
6525 return -EINVAL;
6526
74a60c0f
HMH		 6527 tpacpi_disclose_usertask("hwmon pwm1_enable",
6528 "set fan mode to %lu\n", t);
6529
b21a15f6
HMH		 6530 switch (t) {
6531 case 0:
6532 level = TP_EC_FAN_FULLSPEED;
6533 break;
6534 case 1:
6535 level = TPACPI_FAN_LAST_LEVEL;
6536 break;
6537 case 2:
6538 level = TP_EC_FAN_AUTO;
6539 break;
6540 case 3:
6541 /* reserved for software-controlled auto mode */
6542 return -ENOSYS;
18ad7996 6543 default:
b21a15f6 6544 return -EINVAL;
18ad7996 6545 }
b21a15f6
HMH		 6546
6547 res = fan_set_level_safe(level);
6548 if (res == -ENXIO)
6549 return -EINVAL;
6550 else if (res < 0)
6551 return res;
6552
6553 fan_watchdog_reset();
6554
6555 return count;
18ad7996
HMH		 6556}
6557
b21a15f6
HMH		 6558static struct device_attribute dev_attr_fan_pwm1_enable =
6559 __ATTR(pwm1_enable, S_IWUSR | S_IRUGO,
6560 fan_pwm1_enable_show, fan_pwm1_enable_store);
6561
6562/* sysfs fan pwm1 ------------------------------------------------------ */
6563static ssize_t fan_pwm1_show(struct device *dev,
6564 struct device_attribute *attr,
6565 char *buf)
fe98a52c 6566{
b21a15f6
HMH		 6567 int res;
6568 u8 status;
fe98a52c 6569
b21a15f6
HMH		 6570 res = fan_get_status_safe(&status);
6571 if (res)
6572 return res;
ecf2a80a 6573
b21a15f6
HMH		 6574 if ((status &
6575 (TP_EC_FAN_AUTO | TP_EC_FAN_FULLSPEED)) != 0)
6576 status = fan_control_desired_level;
fe98a52c 6577
b21a15f6
HMH		 6578 if (status > 7)
6579 status = 7;
fe98a52c 6580
b21a15f6 6581 return snprintf(buf, PAGE_SIZE, "%u\n", (status * 255) / 7);
fe98a52c
HMH		 6582}
6583
b21a15f6
HMH		 6584static ssize_t fan_pwm1_store(struct device *dev,
6585 struct device_attribute *attr,
6586 const char *buf, size_t count)
18ad7996 6587{
b21a15f6 6588 unsigned long s;
1c6a334e 6589 int rc;
b21a15f6 6590 u8 status, newlevel;
1c6a334e 6591
b21a15f6
HMH		 6592 if (parse_strtoul(buf, 255, &s))
6593 return -EINVAL;
6594
74a60c0f
HMH		 6595 tpacpi_disclose_usertask("hwmon pwm1",
6596 "set fan speed to %lu\n", s);
6597
b21a15f6
HMH		 6598 /* scale down from 0-255 to 0-7 */
6599 newlevel = (s >> 5) & 0x07;
ecf2a80a 6600
7646ea88 6601 if (mutex_lock_killable(&fan_mutex))
fc589a3c 6602 return -ERESTARTSYS;
40ca9fdf 6603
b21a15f6
HMH		 6604 rc = fan_get_status(&status);
6605 if (!rc && (status &
6606 (TP_EC_FAN_AUTO | TP_EC_FAN_FULLSPEED)) == 0) {
6607 rc = fan_set_level(newlevel);
6608 if (rc == -ENXIO)
6609 rc = -EINVAL;
6610 else if (!rc) {
6611 fan_update_desired_level(newlevel);
6612 fan_watchdog_reset();
eaa7571b 6613 }
b21a15f6 6614 }
1c6a334e 6615
b21a15f6
HMH		 6616 mutex_unlock(&fan_mutex);
6617 return (rc)? rc : count;
6618}
1c6a334e 6619
b21a15f6
HMH		 6620static struct device_attribute dev_attr_fan_pwm1 =
6621 __ATTR(pwm1, S_IWUSR | S_IRUGO,
6622 fan_pwm1_show, fan_pwm1_store);
1c6a334e 6623
b21a15f6
HMH		 6624/* sysfs fan fan1_input ------------------------------------------------ */
6625static ssize_t fan_fan1_input_show(struct device *dev,
6626 struct device_attribute *attr,
6627 char *buf)
6628{
6629 int res;
6630 unsigned int speed;
1c6a334e 6631
b21a15f6
HMH		 6632 res = fan_get_speed(&speed);
6633 if (res < 0)
6634 return res;
1c6a334e 6635
b21a15f6
HMH		 6636 return snprintf(buf, PAGE_SIZE, "%u\n", speed);
6637}
18ad7996 6638
b21a15f6
HMH		 6639static struct device_attribute dev_attr_fan_fan1_input =
6640 __ATTR(fan1_input, S_IRUGO,
6641 fan_fan1_input_show, NULL);
40ca9fdf 6642
b21a15f6
HMH		 6643/* sysfs fan fan_watchdog (hwmon driver) ------------------------------- */
6644static ssize_t fan_fan_watchdog_show(struct device_driver *drv,
6645 char *buf)
6646{
6647 return snprintf(buf, PAGE_SIZE, "%u\n", fan_watchdog_maxinterval);
18ad7996
HMH		 6648}
6649
b21a15f6
HMH		 6650static ssize_t fan_fan_watchdog_store(struct device_driver *drv,
6651 const char *buf, size_t count)
18ad7996 6652{
b21a15f6
HMH		 6653 unsigned long t;
6654
6655 if (parse_strtoul(buf, 120, &t))
6656 return -EINVAL;
40ca9fdf 6657
ecf2a80a
HMH		 6658 if (!fan_control_allowed)
6659 return -EPERM;
6660
b21a15f6
HMH		 6661 fan_watchdog_maxinterval = t;
6662 fan_watchdog_reset();
40ca9fdf 6663
74a60c0f
HMH		 6664 tpacpi_disclose_usertask("fan_watchdog", "set to %lu\n", t);
6665
b21a15f6
HMH		 6666 return count;
6667}
6668
6669static DRIVER_ATTR(fan_watchdog, S_IWUSR | S_IRUGO,
6670 fan_fan_watchdog_show, fan_fan_watchdog_store);
6671
6672/* --------------------------------------------------------------------- */
6673static struct attribute *fan_attributes[] = {
6674 &dev_attr_fan_pwm1_enable.attr, &dev_attr_fan_pwm1.attr,
6675 &dev_attr_fan_fan1_input.attr,
6676 NULL
6677};
6678
6679static const struct attribute_group fan_attr_group = {
6680 .attrs = fan_attributes,
6681};
6682
6683static int __init fan_init(struct ibm_init_struct *iibm)
6684{
6685 int rc;
6686
74a60c0f
HMH		 6687 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_FAN,
6688 "initializing fan subdriver\n");
b21a15f6
HMH		 6689
6690 mutex_init(&fan_mutex);
6691 fan_status_access_mode = TPACPI_FAN_NONE;
6692 fan_control_access_mode = TPACPI_FAN_WR_NONE;
6693 fan_control_commands = 0;
6694 fan_watchdog_maxinterval = 0;
6695 tp_features.fan_ctrl_status_undef = 0;
6696 fan_control_desired_level = 7;
6697
e0c7dfe7
HMH		 6698 TPACPI_ACPIHANDLE_INIT(fans);
6699 TPACPI_ACPIHANDLE_INIT(gfan);
6700 TPACPI_ACPIHANDLE_INIT(sfan);
b21a15f6
HMH		 6701
6702 if (gfan_handle) {
6703 /* 570, 600e/x, 770e, 770x */
6704 fan_status_access_mode = TPACPI_FAN_RD_ACPI_GFAN;
6705 } else {
6706 /* all other ThinkPads: note that even old-style
6707 * ThinkPad ECs supports the fan control register */
6708 if (likely(acpi_ec_read(fan_status_offset,
6709 &fan_control_initial_status))) {
6710 fan_status_access_mode = TPACPI_FAN_RD_TPEC;
1c2ece75 6711 fan_quirk1_detect();
b21a15f6 6712 } else {
e0c7dfe7 6713 printk(TPACPI_ERR
b21a15f6
HMH		 6714 "ThinkPad ACPI EC access misbehaving, "
6715 "fan status and control unavailable\n");
6716 return 1;
6717 }
6718 }
6719
6720 if (sfan_handle) {
6721 /* 570, 770x-JL */
6722 fan_control_access_mode = TPACPI_FAN_WR_ACPI_SFAN;
6723 fan_control_commands |=
6724 TPACPI_FAN_CMD_LEVEL | TPACPI_FAN_CMD_ENABLE;
6725 } else {
6726 if (!gfan_handle) {
6727 /* gfan without sfan means no fan control */
6728 /* all other models implement TP EC 0x2f control */
6729
6730 if (fans_handle) {
6731 /* X31, X40, X41 */
6732 fan_control_access_mode =
6733 TPACPI_FAN_WR_ACPI_FANS;
6734 fan_control_commands |=
6735 TPACPI_FAN_CMD_SPEED |
6736 TPACPI_FAN_CMD_LEVEL |
6737 TPACPI_FAN_CMD_ENABLE;
6738 } else {
6739 fan_control_access_mode = TPACPI_FAN_WR_TPEC;
6740 fan_control_commands |=
6741 TPACPI_FAN_CMD_LEVEL |
6742 TPACPI_FAN_CMD_ENABLE;
6743 }
fe98a52c 6744 }
b21a15f6 6745 }
18ad7996 6746
74a60c0f
HMH		 6747 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_FAN,
6748 "fan is %s, modes %d, %d\n",
b21a15f6
HMH		 6749 str_supported(fan_status_access_mode != TPACPI_FAN_NONE ||
6750 fan_control_access_mode != TPACPI_FAN_WR_NONE),
6751 fan_status_access_mode, fan_control_access_mode);
1c6a334e 6752
b21a15f6
HMH		 6753 /* fan control master switch */
6754 if (!fan_control_allowed) {
6755 fan_control_access_mode = TPACPI_FAN_WR_NONE;
6756 fan_control_commands = 0;
74a60c0f 6757 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_FAN,
b21a15f6 6758 "fan control features disabled by parameter\n");
18ad7996 6759 }
40ca9fdf 6760
b21a15f6
HMH		 6761 /* update fan_control_desired_level */
6762 if (fan_status_access_mode != TPACPI_FAN_NONE)
6763 fan_get_status_safe(NULL);
fe98a52c 6764
b21a15f6
HMH		 6765 if (fan_status_access_mode != TPACPI_FAN_NONE ||
6766 fan_control_access_mode != TPACPI_FAN_WR_NONE) {
6767 rc = sysfs_create_group(&tpacpi_sensors_pdev->dev.kobj,
6768 &fan_attr_group);
b21a15f6
HMH		 6769 if (rc < 0)
6770 return rc;
9c0a76e1
HMH		 6771
6772 rc = driver_create_file(&tpacpi_hwmon_pdriver.driver,
6773 &driver_attr_fan_watchdog);
6774 if (rc < 0) {
6775 sysfs_remove_group(&tpacpi_sensors_pdev->dev.kobj,
6776 &fan_attr_group);
6777 return rc;
6778 }
b21a15f6
HMH		 6779 return 0;
6780 } else
6781 return 1;
56b6aeb0
HMH		 6782}
6783
b21a15f6 6784static void fan_exit(void)
56b6aeb0 6785{
74a60c0f 6786 vdbg_printk(TPACPI_DBG_EXIT | TPACPI_DBG_FAN,
35ff8b9f 6787 "cancelling any pending fan watchdog tasks\n");
56b6aeb0 6788
b21a15f6
HMH		 6789 /* FIXME: can we really do this unconditionally? */
6790 sysfs_remove_group(&tpacpi_sensors_pdev->dev.kobj, &fan_attr_group);
35ff8b9f
HMH		 6791 driver_remove_file(&tpacpi_hwmon_pdriver.driver,
6792 &driver_attr_fan_watchdog);
40ca9fdf 6793
b21a15f6 6794 cancel_delayed_work(&fan_watchdog_task);
e0e3c061 6795 flush_workqueue(tpacpi_wq);
56b6aeb0
HMH		 6796}
6797
75700e53
HMH		 6798static void fan_suspend(pm_message_t state)
6799{
0081b162
HMH		 6800 int rc;
6801
75700e53
HMH		 6802 if (!fan_control_allowed)
6803 return;
6804
6805 /* Store fan status in cache */
0081b162
HMH		 6806 fan_control_resume_level = 0;
6807 rc = fan_get_status_safe(&fan_control_resume_level);
6808 if (rc < 0)
6809 printk(TPACPI_NOTICE
6810 "failed to read fan level for later "
6811 "restore during resume: %d\n", rc);
6812
6813 /* if it is undefined, don't attempt to restore it.
6814 * KEEP THIS LAST */
75700e53 6815 if (tp_features.fan_ctrl_status_undef)
0081b162 6816 fan_control_resume_level = 0;
75700e53
HMH		 6817}
6818
6819static void fan_resume(void)
6820{
75700e53
HMH		 6821 u8 current_level = 7;
6822 bool do_set = false;
0081b162 6823 int rc;
75700e53
HMH		 6824
6825 /* DSDT *always* updates status on resume */
6826 tp_features.fan_ctrl_status_undef = 0;
6827
75700e53 6828 if (!fan_control_allowed ||
0081b162 6829 !fan_control_resume_level ||
75700e53
HMH		 6830 (fan_get_status_safe(&current_level) < 0))
6831 return;
6832
6833 switch (fan_control_access_mode) {
6834 case TPACPI_FAN_WR_ACPI_SFAN:
0081b162
HMH		 6835 /* never decrease fan level */
6836 do_set = (fan_control_resume_level > current_level);
75700e53
HMH		 6837 break;
6838 case TPACPI_FAN_WR_ACPI_FANS:
6839 case TPACPI_FAN_WR_TPEC:
0081b162
HMH		 6840 /* never decrease fan level, scale is:
6841 * TP_EC_FAN_FULLSPEED > 7 >= TP_EC_FAN_AUTO
6842 *
6843 * We expect the firmware to set either 7 or AUTO, but we
6844 * handle FULLSPEED out of paranoia.
6845 *
6846 * So, we can safely only restore FULLSPEED or 7, anything
6847 * else could slow the fan. Restoring AUTO is useless, at
6848 * best that's exactly what the DSDT already set (it is the
6849 * slower it uses).
6850 *
6851 * Always keep in mind that the DSDT *will* have set the
6852 * fans to what the vendor supposes is the best level. We
6853 * muck with it only to speed the fan up.
6854 */
6855 if (fan_control_resume_level != 7 &&
6856 !(fan_control_resume_level & TP_EC_FAN_FULLSPEED))
6857 return;
6858 else
6859 do_set = !(current_level & TP_EC_FAN_FULLSPEED) &&
6860 (current_level != fan_control_resume_level);
75700e53
HMH		 6861 break;
6862 default:
6863 return;
6864 }
6865 if (do_set) {
6866 printk(TPACPI_NOTICE
6867 "restoring fan level to 0x%02x\n",
0081b162
HMH		 6868 fan_control_resume_level);
6869 rc = fan_set_level_safe(fan_control_resume_level);
6870 if (rc < 0)
6871 printk(TPACPI_NOTICE
6872 "failed to restore fan level: %d\n", rc);
75700e53
HMH		 6873 }
6874}
6875
56b6aeb0
HMH		 6876static int fan_read(char *p)
6877{
6878 int len = 0;
6879 int rc;
6880 u8 status;
6881 unsigned int speed = 0;
6882
6883 switch (fan_status_access_mode) {
efa27145 6884 case TPACPI_FAN_RD_ACPI_GFAN:
56b6aeb0 6885 /* 570, 600e/x, 770e, 770x */
35ff8b9f
HMH		 6886 rc = fan_get_status_safe(&status);
6887 if (rc < 0)
56b6aeb0
HMH		 6888 return rc;
6889
6890 len += sprintf(p + len, "status:\t\t%s\n"
6891 "level:\t\t%d\n",
6892 (status != 0) ? "enabled" : "disabled", status);
6893 break;
6894
efa27145 6895 case TPACPI_FAN_RD_TPEC:
56b6aeb0 6896 /* all except 570, 600e/x, 770e, 770x */
35ff8b9f
HMH		 6897 rc = fan_get_status_safe(&status);
6898 if (rc < 0)
56b6aeb0
HMH		 6899 return rc;
6900
56b6aeb0
HMH		 6901 len += sprintf(p + len, "status:\t\t%s\n",
6902 (status != 0) ? "enabled" : "disabled");
6903
35ff8b9f
HMH		 6904 rc = fan_get_speed(&speed);
6905 if (rc < 0)
56b6aeb0
HMH		 6906 return rc;
6907
6908 len += sprintf(p + len, "speed:\t\t%d\n", speed);
6909
efa27145 6910 if (status & TP_EC_FAN_FULLSPEED)
56b6aeb0
HMH		 6911 /* Disengaged mode takes precedence */
6912 len += sprintf(p + len, "level:\t\tdisengaged\n");
efa27145 6913 else if (status & TP_EC_FAN_AUTO)
56b6aeb0
HMH		 6914 len += sprintf(p + len, "level:\t\tauto\n");
6915 else
6916 len += sprintf(p + len, "level:\t\t%d\n", status);
6917 break;
6918
efa27145 6919 case TPACPI_FAN_NONE:
56b6aeb0
HMH		 6920 default:
6921 len += sprintf(p + len, "status:\t\tnot supported\n");
6922 }
6923
efa27145 6924 if (fan_control_commands & TPACPI_FAN_CMD_LEVEL) {
56b6aeb0
HMH		 6925 len += sprintf(p + len, "commands:\tlevel <level>");
6926
6927 switch (fan_control_access_mode) {
efa27145 6928 case TPACPI_FAN_WR_ACPI_SFAN:
56b6aeb0
HMH		 6929 len += sprintf(p + len, " (<level> is 0-7)\n");
6930 break;
6931
6932 default:
6933 len += sprintf(p + len, " (<level> is 0-7, "
fe98a52c 6934 "auto, disengaged, full-speed)\n");
56b6aeb0
HMH		 6935 break;
6936 }
6937 }
18ad7996 6938
efa27145 6939 if (fan_control_commands & TPACPI_FAN_CMD_ENABLE)
56b6aeb0 6940 len += sprintf(p + len, "commands:\tenable, disable\n"
35ff8b9f
HMH		 6941 "commands:\twatchdog <timeout> (<timeout> "
6942 "is 0 (off), 1-120 (seconds))\n");
1da177e4 6943
efa27145 6944 if (fan_control_commands & TPACPI_FAN_CMD_SPEED)
56b6aeb0
HMH		 6945 len += sprintf(p + len, "commands:\tspeed <speed>"
6946 " (<speed> is 0-65535)\n");
6947
6948 return len;
78f81cc4
BD		 6949}
6950
18ad7996
HMH		 6951static int fan_write_cmd_level(const char *cmd, int *rc)
6952{
6953 int level;
6954
a12095c2 6955 if (strlencmp(cmd, "level auto") == 0)
efa27145 6956 level = TP_EC_FAN_AUTO;
fe98a52c 6957 else if ((strlencmp(cmd, "level disengaged") == 0) |
35ff8b9f 6958 (strlencmp(cmd, "level full-speed") == 0))
efa27145 6959 level = TP_EC_FAN_FULLSPEED;
a12095c2 6960 else if (sscanf(cmd, "level %d", &level) != 1)
18ad7996
HMH		 6961 return 0;
6962
35ff8b9f
HMH		 6963 *rc = fan_set_level_safe(level);
6964 if (*rc == -ENXIO)
e0c7dfe7 6965 printk(TPACPI_ERR "level command accepted for unsupported "
18ad7996 6966 "access mode %d", fan_control_access_mode);
74a60c0f
HMH		 6967 else if (!*rc)
6968 tpacpi_disclose_usertask("procfs fan",
6969 "set level to %d\n", level);
18ad7996
HMH		 6970
6971 return 1;
6972}
6973
6974static int fan_write_cmd_enable(const char *cmd, int *rc)
6975{
6976 if (strlencmp(cmd, "enable") != 0)
6977 return 0;
6978
35ff8b9f
HMH		 6979 *rc = fan_set_enable();
6980 if (*rc == -ENXIO)
e0c7dfe7 6981 printk(TPACPI_ERR "enable command accepted for unsupported "
18ad7996 6982 "access mode %d", fan_control_access_mode);
74a60c0f
HMH		 6983 else if (!*rc)
6984 tpacpi_disclose_usertask("procfs fan", "enable\n");
18ad7996
HMH		 6985
6986 return 1;
6987}
6988
6989static int fan_write_cmd_disable(const char *cmd, int *rc)
6990{
6991 if (strlencmp(cmd, "disable") != 0)
6992 return 0;
6993
35ff8b9f
HMH		 6994 *rc = fan_set_disable();
6995 if (*rc == -ENXIO)
e0c7dfe7 6996 printk(TPACPI_ERR "disable command accepted for unsupported "
18ad7996 6997 "access mode %d", fan_control_access_mode);
74a60c0f
HMH		 6998 else if (!*rc)
6999 tpacpi_disclose_usertask("procfs fan", "disable\n");
18ad7996
HMH		 7000
7001 return 1;
7002}
7003
7004static int fan_write_cmd_speed(const char *cmd, int *rc)
7005{
7006 int speed;
7007
a8b7a662
HMH		 7008 /* TODO:
7009 * Support speed <low> <medium> <high> ? */
7010
18ad7996
HMH		 7011 if (sscanf(cmd, "speed %d", &speed) != 1)
7012 return 0;
7013
35ff8b9f
HMH		 7014 *rc = fan_set_speed(speed);
7015 if (*rc == -ENXIO)
e0c7dfe7 7016 printk(TPACPI_ERR "speed command accepted for unsupported "
18ad7996 7017 "access mode %d", fan_control_access_mode);
74a60c0f
HMH		 7018 else if (!*rc)
7019 tpacpi_disclose_usertask("procfs fan",
7020 "set speed to %d\n", speed);
18ad7996
HMH		 7021
7022 return 1;
7023}
7024
16663a87
HMH		 7025static int fan_write_cmd_watchdog(const char *cmd, int *rc)
7026{
7027 int interval;
7028
7029 if (sscanf(cmd, "watchdog %d", &interval) != 1)
7030 return 0;
7031
7032 if (interval < 0 || interval > 120)
7033 *rc = -EINVAL;
74a60c0f 7034 else {
16663a87 7035 fan_watchdog_maxinterval = interval;
74a60c0f
HMH		 7036 tpacpi_disclose_usertask("procfs fan",
7037 "set watchdog timer to %d\n",
7038 interval);
7039 }
16663a87
HMH		 7040
7041 return 1;
7042}
7043
18ad7996
HMH		 7044static int fan_write(char *buf)
7045{
7046 char *cmd;
7047 int rc = 0;
7048
7049 while (!rc && (cmd = next_cmd(&buf))) {
efa27145 7050 if (!((fan_control_commands & TPACPI_FAN_CMD_LEVEL) &&
18ad7996 7051 fan_write_cmd_level(cmd, &rc)) &&
efa27145 7052 !((fan_control_commands & TPACPI_FAN_CMD_ENABLE) &&
18ad7996 7053 (fan_write_cmd_enable(cmd, &rc) ||
16663a87
HMH		 7054 fan_write_cmd_disable(cmd, &rc) ||
7055 fan_write_cmd_watchdog(cmd, &rc))) &&
efa27145 7056 !((fan_control_commands & TPACPI_FAN_CMD_SPEED) &&
18ad7996
HMH		 7057 fan_write_cmd_speed(cmd, &rc))
7058 )
7059 rc = -EINVAL;
16663a87
HMH		 7060 else if (!rc)
7061 fan_watchdog_reset();
18ad7996
HMH		 7062 }
7063
7064 return rc;
7065}
7066
a5763f22
HMH		 7067static struct ibm_struct fan_driver_data = {
7068 .name = "fan",
7069 .read = fan_read,
7070 .write = fan_write,
7071 .exit = fan_exit,
75700e53
HMH		 7072 .suspend = fan_suspend,
7073 .resume = fan_resume,
a5763f22
HMH		 7074};
7075
56b6aeb0
HMH		 7076/****************************************************************************
7077 ****************************************************************************
7078 *
7079 * Infrastructure
7080 *
7081 ****************************************************************************
7082 ****************************************************************************/
7083
7fd40029
HMH		 7084/* sysfs name ---------------------------------------------------------- */
7085static ssize_t thinkpad_acpi_pdev_name_show(struct device *dev,
7086 struct device_attribute *attr,
7087 char *buf)
7088{
e0c7dfe7 7089 return snprintf(buf, PAGE_SIZE, "%s\n", TPACPI_NAME);
7fd40029
HMH		 7090}
7091
7092static struct device_attribute dev_attr_thinkpad_acpi_pdev_name =
7093 __ATTR(name, S_IRUGO, thinkpad_acpi_pdev_name_show, NULL);
7094
7095/* --------------------------------------------------------------------- */
7096
56b6aeb0 7097/* /proc support */
94954cc6 7098static struct proc_dir_entry *proc_dir;
16663a87 7099
56b6aeb0
HMH		 7100/*
7101 * Module and infrastructure proble, init and exit handling
7102 */
1da177e4 7103
b21a15f6
HMH		 7104static int force_load;
7105
fe08bc4b 7106#ifdef CONFIG_THINKPAD_ACPI_DEBUG
a5763f22 7107static const char * __init str_supported(int is_supported)
fe08bc4b 7108{
a5763f22 7109 static char text_unsupported[] __initdata = "not supported";
fe08bc4b 7110
a5763f22 7111 return (is_supported)? &text_unsupported[4] : &text_unsupported[0];
fe08bc4b
HMH		 7112}
7113#endif /* CONFIG_THINKPAD_ACPI_DEBUG */
7114
b21a15f6
HMH		 7115static void ibm_exit(struct ibm_struct *ibm)
7116{
7117 dbg_printk(TPACPI_DBG_EXIT, "removing %s\n", ibm->name);
7118
7119 list_del_init(&ibm->all_drivers);
7120
7121 if (ibm->flags.acpi_notify_installed) {
7122 dbg_printk(TPACPI_DBG_EXIT,
7123 "%s: acpi_remove_notify_handler\n", ibm->name);
7124 BUG_ON(!ibm->acpi);
7125 acpi_remove_notify_handler(*ibm->acpi->handle,
7126 ibm->acpi->type,
7127 dispatch_acpi_notify);
7128 ibm->flags.acpi_notify_installed = 0;
7129 ibm->flags.acpi_notify_installed = 0;
7130 }
7131
7132 if (ibm->flags.proc_created) {
7133 dbg_printk(TPACPI_DBG_EXIT,
7134 "%s: remove_proc_entry\n", ibm->name);
7135 remove_proc_entry(ibm->name, proc_dir);
7136 ibm->flags.proc_created = 0;
7137 }
7138
7139 if (ibm->flags.acpi_driver_registered) {
7140 dbg_printk(TPACPI_DBG_EXIT,
7141 "%s: acpi_bus_unregister_driver\n", ibm->name);
7142 BUG_ON(!ibm->acpi);
7143 acpi_bus_unregister_driver(ibm->acpi->driver);
7144 kfree(ibm->acpi->driver);
7145 ibm->acpi->driver = NULL;
7146 ibm->flags.acpi_driver_registered = 0;
7147 }
7148
7149 if (ibm->flags.init_called && ibm->exit) {
7150 ibm->exit();
7151 ibm->flags.init_called = 0;
7152 }
7153
7154 dbg_printk(TPACPI_DBG_INIT, "finished removing %s\n", ibm->name);
7155}
f74a27d4 7156
a5763f22 7157static int __init ibm_init(struct ibm_init_struct *iibm)
1da177e4
LT		 7158{
7159 int ret;
a5763f22 7160 struct ibm_struct *ibm = iibm->data;
1da177e4
LT		 7161 struct proc_dir_entry *entry;
7162
a5763f22
HMH		 7163 BUG_ON(ibm == NULL);
7164
7165 INIT_LIST_HEAD(&ibm->all_drivers);
7166
92641177 7167 if (ibm->flags.experimental && !experimental)
1da177e4
LT		 7168 return 0;
7169
fe08bc4b
HMH		 7170 dbg_printk(TPACPI_DBG_INIT,
7171 "probing for %s\n", ibm->name);
7172
a5763f22
HMH		 7173 if (iibm->init) {
7174 ret = iibm->init(iibm);
5fba344c
HMH		 7175 if (ret > 0)
7176 return 0; /* probe failed */
7177 if (ret)
1da177e4 7178 return ret;
a5763f22 7179
92641177 7180 ibm->flags.init_called = 1;
1da177e4
LT		 7181 }
7182
8d376cd6
HMH		 7183 if (ibm->acpi) {
7184 if (ibm->acpi->hid) {
7185 ret = register_tpacpi_subdriver(ibm);
7186 if (ret)
7187 goto err_out;
7188 }
5fba344c 7189
8d376cd6
HMH		 7190 if (ibm->acpi->notify) {
7191 ret = setup_acpi_notify(ibm);
7192 if (ret == -ENODEV) {
e0c7dfe7 7193 printk(TPACPI_NOTICE "disabling subdriver %s\n",
8d376cd6
HMH		 7194 ibm->name);
7195 ret = 0;
7196 goto err_out;
7197 }
7198 if (ret < 0)
7199 goto err_out;
5fba344c 7200 }
5fba344c
HMH		 7201 }
7202
fe08bc4b
HMH		 7203 dbg_printk(TPACPI_DBG_INIT,
7204 "%s installed\n", ibm->name);
7205
78f81cc4
BD		 7206 if (ibm->read) {
7207 entry = create_proc_entry(ibm->name,
7208 S_IFREG | S_IRUGO | S_IWUSR,
7209 proc_dir);
7210 if (!entry) {
e0c7dfe7 7211 printk(TPACPI_ERR "unable to create proc entry %s\n",
78f81cc4 7212 ibm->name);
5fba344c
HMH		 7213 ret = -ENODEV;
7214 goto err_out;
78f81cc4
BD		 7215 }
7216 entry->owner = THIS_MODULE;
7217 entry->data = ibm;
8d376cd6 7218 entry->read_proc = &dispatch_procfs_read;
78f81cc4 7219 if (ibm->write)
8d376cd6 7220 entry->write_proc = &dispatch_procfs_write;
92641177 7221 ibm->flags.proc_created = 1;
78f81cc4 7222 }
1da177e4 7223
a5763f22
HMH		 7224 list_add_tail(&ibm->all_drivers, &tpacpi_all_drivers);
7225
1da177e4 7226 return 0;
5fba344c
HMH		 7227
7228err_out:
fe08bc4b
HMH		 7229 dbg_printk(TPACPI_DBG_INIT,
7230 "%s: at error exit path with result %d\n",
7231 ibm->name, ret);
7232
5fba344c
HMH		 7233 ibm_exit(ibm);
7234 return (ret < 0)? ret : 0;
1da177e4
LT		 7235}
7236
56b6aeb0
HMH		 7237/* Probing */
7238
bf20e740
HMH		 7239/* returns 0 - probe ok, or < 0 - probe error.
7240 * Probe ok doesn't mean thinkpad found.
7241 * On error, kfree() cleanup on tp->* is not performed, caller must do it */
7242static int __must_check __init get_thinkpad_model_data(
7243 struct thinkpad_id_data *tp)
1da177e4 7244{
1855256c 7245 const struct dmi_device *dev = NULL;
56b6aeb0 7246 char ec_fw_string[18];
bf20e740 7247 char const *s;
1da177e4 7248
d5a2f2f1 7249 if (!tp)
bf20e740 7250 return -EINVAL;
d5a2f2f1
HMH		 7251
7252 memset(tp, 0, sizeof(*tp));
7253
7254 if (dmi_name_in_vendors("IBM"))
7255 tp->vendor = PCI_VENDOR_ID_IBM;
7256 else if (dmi_name_in_vendors("LENOVO"))
7257 tp->vendor = PCI_VENDOR_ID_LENOVO;
7258 else
bf20e740 7259 return 0;
d5a2f2f1 7260
bf20e740
HMH		 7261 s = dmi_get_system_info(DMI_BIOS_VERSION);
7262 tp->bios_version_str = kstrdup(s, GFP_KERNEL);
7263 if (s && !tp->bios_version_str)
7264 return -ENOMEM;
d5a2f2f1 7265 if (!tp->bios_version_str)
bf20e740 7266 return 0;
d5a2f2f1
HMH		 7267 tp->bios_model = tp->bios_version_str[0]
7268 | (tp->bios_version_str[1] << 8);
7269
56b6aeb0
HMH		 7270 /*
7271 * ThinkPad T23 or newer, A31 or newer, R50e or newer,
7272 * X32 or newer, all Z series; Some models must have an
7273 * up-to-date BIOS or they will not be detected.
7274 *
7275 * See http://thinkwiki.org/wiki/List_of_DMI_IDs
7276 */
7277 while ((dev = dmi_find_device(DMI_DEV_TYPE_OEM_STRING, NULL, dev))) {
7278 if (sscanf(dev->name,
7279 "IBM ThinkPad Embedded Controller -[%17c",
7280 ec_fw_string) == 1) {
7281 ec_fw_string[sizeof(ec_fw_string) - 1] = 0;
7282 ec_fw_string[strcspn(ec_fw_string, " ]")] = 0;
d5a2f2f1
HMH		 7283
7284 tp->ec_version_str = kstrdup(ec_fw_string, GFP_KERNEL);
bf20e740
HMH		 7285 if (!tp->ec_version_str)
7286 return -ENOMEM;
d5a2f2f1
HMH		 7287 tp->ec_model = ec_fw_string[0]
7288 | (ec_fw_string[1] << 8);
7289 break;
78f81cc4 7290 }
1da177e4 7291 }
d5a2f2f1 7292
bf20e740
HMH		 7293 s = dmi_get_system_info(DMI_PRODUCT_VERSION);
7294 if (s && !strnicmp(s, "ThinkPad", 8)) {
7295 tp->model_str = kstrdup(s, GFP_KERNEL);
7296 if (!tp->model_str)
7297 return -ENOMEM;
d5a2f2f1 7298 }
8c74adbc 7299
bf20e740
HMH		 7300 s = dmi_get_system_info(DMI_PRODUCT_NAME);
7301 tp->nummodel_str = kstrdup(s, GFP_KERNEL);
7302 if (s && !tp->nummodel_str)
7303 return -ENOMEM;
7304
7305 return 0;
1da177e4
LT		 7306}
7307
5fba344c
HMH		 7308static int __init probe_for_thinkpad(void)
7309{
7310 int is_thinkpad;
7311
7312 if (acpi_disabled)
7313 return -ENODEV;
7314
7315 /*
7316 * Non-ancient models have better DMI tagging, but very old models
7317 * don't.
7318 */
d5a2f2f1 7319 is_thinkpad = (thinkpad_id.model_str != NULL);
5fba344c
HMH		 7320
7321 /* ec is required because many other handles are relative to it */
e0c7dfe7 7322 TPACPI_ACPIHANDLE_INIT(ec);
5fba344c
HMH		 7323 if (!ec_handle) {
7324 if (is_thinkpad)
e0c7dfe7 7325 printk(TPACPI_ERR
5fba344c
HMH		 7326 "Not yet supported ThinkPad detected!\n");
7327 return -ENODEV;
7328 }
7329
0dcef77c
HMH		 7330 /*
7331 * Risks a regression on very old machines, but reduces potential
7332 * false positives a damn great deal
7333 */
7334 if (!is_thinkpad)
d5a2f2f1 7335 is_thinkpad = (thinkpad_id.vendor == PCI_VENDOR_ID_IBM);
0dcef77c
HMH		 7336
7337 if (!is_thinkpad && !force_load)
7338 return -ENODEV;
7339
5fba344c
HMH		 7340 return 0;
7341}
7342
7343
56b6aeb0 7344/* Module init, exit, parameters */
1da177e4 7345
a5763f22
HMH		 7346static struct ibm_init_struct ibms_init[] __initdata = {
7347 {
7348 .init = thinkpad_acpi_driver_init,
7349 .data = &thinkpad_acpi_driver_data,
7350 },
7351 {
7352 .init = hotkey_init,
7353 .data = &hotkey_driver_data,
7354 },
7355 {
7356 .init = bluetooth_init,
7357 .data = &bluetooth_driver_data,
7358 },
7359 {
7360 .init = wan_init,
7361 .data = &wan_driver_data,
7362 },
0045c0aa
HMH		 7363 {
7364 .init = uwb_init,
7365 .data = &uwb_driver_data,
7366 },
d7c1d17d 7367#ifdef CONFIG_THINKPAD_ACPI_VIDEO
a5763f22
HMH		 7368 {
7369 .init = video_init,
7370 .data = &video_driver_data,
7371 },
d7c1d17d 7372#endif
a5763f22
HMH		 7373 {
7374 .init = light_init,
7375 .data = &light_driver_data,
7376 },
7377#ifdef CONFIG_THINKPAD_ACPI_DOCK
7378 {
7379 .init = dock_init,
7380 .data = &dock_driver_data[0],
7381 },
7382 {
d94a7f16 7383 .init = dock_init2,
a5763f22
HMH		 7384 .data = &dock_driver_data[1],
7385 },
7386#endif
7387#ifdef CONFIG_THINKPAD_ACPI_BAY
7388 {
7389 .init = bay_init,
7390 .data = &bay_driver_data,
7391 },
7392#endif
7393 {
7394 .init = cmos_init,
7395 .data = &cmos_driver_data,
7396 },
7397 {
7398 .init = led_init,
7399 .data = &led_driver_data,
7400 },
7401 {
7402 .init = beep_init,
7403 .data = &beep_driver_data,
7404 },
7405 {
7406 .init = thermal_init,
7407 .data = &thermal_driver_data,
7408 },
7409 {
7410 .data = &ecdump_driver_data,
7411 },
7412 {
7413 .init = brightness_init,
7414 .data = &brightness_driver_data,
7415 },
7416 {
7417 .data = &volume_driver_data,
7418 },
7419 {
7420 .init = fan_init,
7421 .data = &fan_driver_data,
7422 },
7423};
7424
3945ac36 7425static int __init set_ibm_param(const char *val, struct kernel_param *kp)
1da177e4
LT		 7426{
7427 unsigned int i;
a5763f22 7428 struct ibm_struct *ibm;
1da177e4 7429
59f91ff1
HMH		 7430 if (!kp || !kp->name || !val)
7431 return -EINVAL;
7432
a5763f22
HMH		 7433 for (i = 0; i < ARRAY_SIZE(ibms_init); i++) {
7434 ibm = ibms_init[i].data;
59f91ff1
HMH		 7435 WARN_ON(ibm == NULL);
7436
7437 if (!ibm || !ibm->name)
7438 continue;
a5763f22
HMH		 7439
7440 if (strcmp(ibm->name, kp->name) == 0 && ibm->write) {
7441 if (strlen(val) > sizeof(ibms_init[i].param) - 2)
78f81cc4 7442 return -ENOSPC;
a5763f22
HMH		 7443 strcpy(ibms_init[i].param, val);
7444 strcat(ibms_init[i].param, ",");
78f81cc4
BD		 7445 return 0;
7446 }
a5763f22 7447 }
1da177e4 7448
1da177e4
LT		 7449 return -EINVAL;
7450}
7451
56b6aeb0 7452module_param(experimental, int, 0);
f68080f8 7453MODULE_PARM_DESC(experimental,
35ff8b9f 7454 "Enables experimental features when non-zero");
56b6aeb0 7455
132ce091 7456module_param_named(debug, dbg_level, uint, 0);
f68080f8 7457MODULE_PARM_DESC(debug, "Sets debug level bit-mask");
132ce091 7458
86cc9445 7459module_param(force_load, bool, 0);
f68080f8 7460MODULE_PARM_DESC(force_load,
35ff8b9f
HMH		 7461 "Attempts to load the driver even on a "
7462 "mis-identified ThinkPad when true");
0dcef77c 7463
86cc9445 7464module_param_named(fan_control, fan_control_allowed, bool, 0);
f68080f8 7465MODULE_PARM_DESC(fan_control,
35ff8b9f 7466 "Enables setting fan parameters features when true");
ecf2a80a 7467
24d3b774 7468module_param_named(brightness_mode, brightness_mode, int, 0);
f68080f8 7469MODULE_PARM_DESC(brightness_mode,
35ff8b9f
HMH		 7470 "Selects brightness control strategy: "
7471 "0=auto, 1=EC, 2=CMOS, 3=both");
24d3b774 7472
87cc537a 7473module_param(brightness_enable, uint, 0);
f68080f8 7474MODULE_PARM_DESC(brightness_enable,
35ff8b9f 7475 "Enables backlight control when 1, disables when 0");
87cc537a 7476
ff80f137 7477module_param(hotkey_report_mode, uint, 0);
f68080f8 7478MODULE_PARM_DESC(hotkey_report_mode,
35ff8b9f
HMH		 7479 "used for backwards compatibility with userspace, "
7480 "see documentation");
ff80f137 7481
e0c7dfe7 7482#define TPACPI_PARAM(feature) \
f68080f8 7483 module_param_call(feature, set_ibm_param, NULL, NULL, 0); \
cbb14842 7484 MODULE_PARM_DESC(feature, "Simulates thinkpad-acpi procfs command " \
35ff8b9f 7485 "at module load, see documentation")
1da177e4 7486
e0c7dfe7
HMH		 7487TPACPI_PARAM(hotkey);
7488TPACPI_PARAM(bluetooth);
7489TPACPI_PARAM(video);
7490TPACPI_PARAM(light);
85998248 7491#ifdef CONFIG_THINKPAD_ACPI_DOCK
e0c7dfe7 7492TPACPI_PARAM(dock);
63e5f248 7493#endif
85998248 7494#ifdef CONFIG_THINKPAD_ACPI_BAY
e0c7dfe7 7495TPACPI_PARAM(bay);
85998248 7496#endif /* CONFIG_THINKPAD_ACPI_BAY */
e0c7dfe7
HMH		 7497TPACPI_PARAM(cmos);
7498TPACPI_PARAM(led);
7499TPACPI_PARAM(beep);
7500TPACPI_PARAM(ecdump);
7501TPACPI_PARAM(brightness);
7502TPACPI_PARAM(volume);
7503TPACPI_PARAM(fan);
78f81cc4 7504
a73f3091
HMH		 7505#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
7506module_param(dbg_wlswemul, uint, 0);
7507MODULE_PARM_DESC(dbg_wlswemul, "Enables WLSW emulation");
7508module_param_named(wlsw_state, tpacpi_wlsw_emulstate, bool, 0);
7509MODULE_PARM_DESC(wlsw_state,
7510 "Initial state of the emulated WLSW switch");
7511
7512module_param(dbg_bluetoothemul, uint, 0);
7513MODULE_PARM_DESC(dbg_bluetoothemul, "Enables bluetooth switch emulation");
7514module_param_named(bluetooth_state, tpacpi_bluetooth_emulstate, bool, 0);
7515MODULE_PARM_DESC(bluetooth_state,
7516 "Initial state of the emulated bluetooth switch");
7517
7518module_param(dbg_wwanemul, uint, 0);
7519MODULE_PARM_DESC(dbg_wwanemul, "Enables WWAN switch emulation");
7520module_param_named(wwan_state, tpacpi_wwan_emulstate, bool, 0);
7521MODULE_PARM_DESC(wwan_state,
7522 "Initial state of the emulated WWAN switch");
0045c0aa
HMH		 7523
7524module_param(dbg_uwbemul, uint, 0);
7525MODULE_PARM_DESC(dbg_uwbemul, "Enables UWB switch emulation");
7526module_param_named(uwb_state, tpacpi_uwb_emulstate, bool, 0);
7527MODULE_PARM_DESC(uwb_state,
7528 "Initial state of the emulated UWB switch");
a73f3091
HMH		 7529#endif
7530
b21a15f6
HMH		 7531static void thinkpad_acpi_module_exit(void)
7532{
7533 struct ibm_struct *ibm, *itmp;
7534
7535 tpacpi_lifecycle = TPACPI_LIFE_EXITING;
7536
7537 list_for_each_entry_safe_reverse(ibm, itmp,
7538 &tpacpi_all_drivers,
7539 all_drivers) {
7540 ibm_exit(ibm);
7541 }
7542
7543 dbg_printk(TPACPI_DBG_INIT, "finished subdriver exit path...\n");
7544
7545 if (tpacpi_inputdev) {
7546 if (tp_features.input_device_registered)
7547 input_unregister_device(tpacpi_inputdev);
7548 else
7549 input_free_device(tpacpi_inputdev);
7550 }
7551
7552 if (tpacpi_hwmon)
7553 hwmon_device_unregister(tpacpi_hwmon);
7554
7555 if (tp_features.sensors_pdev_attrs_registered)
7556 device_remove_file(&tpacpi_sensors_pdev->dev,
7557 &dev_attr_thinkpad_acpi_pdev_name);
7558 if (tpacpi_sensors_pdev)
7559 platform_device_unregister(tpacpi_sensors_pdev);
7560 if (tpacpi_pdev)
7561 platform_device_unregister(tpacpi_pdev);
7562
7563 if (tp_features.sensors_pdrv_attrs_registered)
7564 tpacpi_remove_driver_attributes(&tpacpi_hwmon_pdriver.driver);
7565 if (tp_features.platform_drv_attrs_registered)
7566 tpacpi_remove_driver_attributes(&tpacpi_pdriver.driver);
7567
7568 if (tp_features.sensors_pdrv_registered)
7569 platform_driver_unregister(&tpacpi_hwmon_pdriver);
7570
7571 if (tp_features.platform_drv_registered)
7572 platform_driver_unregister(&tpacpi_pdriver);
7573
7574 if (proc_dir)
e0c7dfe7 7575 remove_proc_entry(TPACPI_PROC_DIR, acpi_root_dir);
b21a15f6 7576
e0e3c061
HMH		 7577 if (tpacpi_wq)
7578 destroy_workqueue(tpacpi_wq);
7579
b21a15f6
HMH		 7580 kfree(thinkpad_id.bios_version_str);
7581 kfree(thinkpad_id.ec_version_str);
7582 kfree(thinkpad_id.model_str);
7583}
7584
f74a27d4 7585
1def7115 7586static int __init thinkpad_acpi_module_init(void)
1da177e4
LT		 7587{
7588 int ret, i;
7589
8fef502e
HMH		 7590 tpacpi_lifecycle = TPACPI_LIFE_INIT;
7591
ff80f137
HMH		 7592 /* Parameter checking */
7593 if (hotkey_report_mode > 2)
7594 return -EINVAL;
7595
54ae1501 7596 /* Driver-level probe */
d5a2f2f1 7597
bf20e740
HMH		 7598 ret = get_thinkpad_model_data(&thinkpad_id);
7599 if (ret) {
7600 printk(TPACPI_ERR
7601 "unable to get DMI data: %d\n", ret);
7602 thinkpad_acpi_module_exit();
7603 return ret;
7604 }
5fba344c 7605 ret = probe_for_thinkpad();
d5a2f2f1
HMH		 7606 if (ret) {
7607 thinkpad_acpi_module_exit();
5fba344c 7608 return ret;
d5a2f2f1 7609 }
1da177e4 7610
54ae1501 7611 /* Driver initialization */
d5a2f2f1 7612
e0c7dfe7
HMH		 7613 TPACPI_ACPIHANDLE_INIT(ecrd);
7614 TPACPI_ACPIHANDLE_INIT(ecwr);
1da177e4 7615
e0e3c061
HMH		 7616 tpacpi_wq = create_singlethread_workqueue(TPACPI_WORKQUEUE_NAME);
7617 if (!tpacpi_wq) {
7618 thinkpad_acpi_module_exit();
7619 return -ENOMEM;
7620 }
7621
e0c7dfe7 7622 proc_dir = proc_mkdir(TPACPI_PROC_DIR, acpi_root_dir);
1da177e4 7623 if (!proc_dir) {
35ff8b9f
HMH		 7624 printk(TPACPI_ERR
7625 "unable to create proc dir " TPACPI_PROC_DIR);
1def7115 7626 thinkpad_acpi_module_exit();
1da177e4
LT		 7627 return -ENODEV;
7628 }
7629 proc_dir->owner = THIS_MODULE;
78f81cc4 7630
54ae1501
HMH		 7631 ret = platform_driver_register(&tpacpi_pdriver);
7632 if (ret) {
35ff8b9f
HMH		 7633 printk(TPACPI_ERR
7634 "unable to register main platform driver\n");
54ae1501
HMH		 7635 thinkpad_acpi_module_exit();
7636 return ret;
7637 }
ac36393d
HMH		 7638 tp_features.platform_drv_registered = 1;
7639
7fd40029
HMH		 7640 ret = platform_driver_register(&tpacpi_hwmon_pdriver);
7641 if (ret) {
35ff8b9f
HMH		 7642 printk(TPACPI_ERR
7643 "unable to register hwmon platform driver\n");
7fd40029
HMH		 7644 thinkpad_acpi_module_exit();
7645 return ret;
7646 }
7647 tp_features.sensors_pdrv_registered = 1;
7648
176750d6 7649 ret = tpacpi_create_driver_attributes(&tpacpi_pdriver.driver);
2369cc94
HMH		 7650 if (!ret) {
7651 tp_features.platform_drv_attrs_registered = 1;
35ff8b9f
HMH		 7652 ret = tpacpi_create_driver_attributes(
7653 &tpacpi_hwmon_pdriver.driver);
2369cc94 7654 }
176750d6 7655 if (ret) {
35ff8b9f
HMH		 7656 printk(TPACPI_ERR
7657 "unable to create sysfs driver attributes\n");
176750d6
HMH		 7658 thinkpad_acpi_module_exit();
7659 return ret;
7660 }
2369cc94 7661 tp_features.sensors_pdrv_attrs_registered = 1;
176750d6 7662
54ae1501
HMH		 7663
7664 /* Device initialization */
e0c7dfe7 7665 tpacpi_pdev = platform_device_register_simple(TPACPI_DRVR_NAME, -1,
54ae1501
HMH		 7666 NULL, 0);
7667 if (IS_ERR(tpacpi_pdev)) {
7668 ret = PTR_ERR(tpacpi_pdev);
7669 tpacpi_pdev = NULL;
e0c7dfe7 7670 printk(TPACPI_ERR "unable to register platform device\n");
54ae1501
HMH		 7671 thinkpad_acpi_module_exit();
7672 return ret;
7673 }
7fd40029 7674 tpacpi_sensors_pdev = platform_device_register_simple(
35ff8b9f
HMH		 7675 TPACPI_HWMON_DRVR_NAME,
7676 -1, NULL, 0);
7fd40029
HMH		 7677 if (IS_ERR(tpacpi_sensors_pdev)) {
7678 ret = PTR_ERR(tpacpi_sensors_pdev);
7679 tpacpi_sensors_pdev = NULL;
35ff8b9f
HMH		 7680 printk(TPACPI_ERR
7681 "unable to register hwmon platform device\n");
7fd40029
HMH		 7682 thinkpad_acpi_module_exit();
7683 return ret;
7684 }
7685 ret = device_create_file(&tpacpi_sensors_pdev->dev,
7686 &dev_attr_thinkpad_acpi_pdev_name);
7687 if (ret) {
e0c7dfe7 7688 printk(TPACPI_ERR
35ff8b9f 7689 "unable to create sysfs hwmon device attributes\n");
7fd40029
HMH		 7690 thinkpad_acpi_module_exit();
7691 return ret;
7692 }
7693 tp_features.sensors_pdev_attrs_registered = 1;
7694 tpacpi_hwmon = hwmon_device_register(&tpacpi_sensors_pdev->dev);
54ae1501
HMH		 7695 if (IS_ERR(tpacpi_hwmon)) {
7696 ret = PTR_ERR(tpacpi_hwmon);
7697 tpacpi_hwmon = NULL;
e0c7dfe7 7698 printk(TPACPI_ERR "unable to register hwmon device\n");
54ae1501
HMH		 7699 thinkpad_acpi_module_exit();
7700 return ret;
7701 }
8523ed6f 7702 mutex_init(&tpacpi_inputdev_send_mutex);
7f5d1cd6
HMH		 7703 tpacpi_inputdev = input_allocate_device();
7704 if (!tpacpi_inputdev) {
e0c7dfe7 7705 printk(TPACPI_ERR "unable to allocate input device\n");
7f5d1cd6
HMH		 7706 thinkpad_acpi_module_exit();
7707 return -ENOMEM;
7708 } else {
7709 /* Prepare input device, but don't register */
7710 tpacpi_inputdev->name = "ThinkPad Extra Buttons";
e0c7dfe7 7711 tpacpi_inputdev->phys = TPACPI_DRVR_NAME "/input0";
7f5d1cd6 7712 tpacpi_inputdev->id.bustype = BUS_HOST;
edf0e0e5
HMH		 7713 tpacpi_inputdev->id.vendor = (thinkpad_id.vendor) ?
7714 thinkpad_id.vendor :
7715 PCI_VENDOR_ID_IBM;
7f5d1cd6
HMH		 7716 tpacpi_inputdev->id.product = TPACPI_HKEY_INPUT_PRODUCT;
7717 tpacpi_inputdev->id.version = TPACPI_HKEY_INPUT_VERSION;
7718 }
a5763f22
HMH		 7719 for (i = 0; i < ARRAY_SIZE(ibms_init); i++) {
7720 ret = ibm_init(&ibms_init[i]);
7721 if (ret >= 0 && *ibms_init[i].param)
7722 ret = ibms_init[i].data->write(ibms_init[i].param);
1da177e4 7723 if (ret < 0) {
1def7115 7724 thinkpad_acpi_module_exit();
1da177e4
LT		 7725 return ret;
7726 }
7727 }
7f5d1cd6
HMH		 7728 ret = input_register_device(tpacpi_inputdev);
7729 if (ret < 0) {
e0c7dfe7 7730 printk(TPACPI_ERR "unable to register input device\n");
7f5d1cd6
HMH		 7731 thinkpad_acpi_module_exit();
7732 return ret;
7733 } else {
7734 tp_features.input_device_registered = 1;
7735 }
1da177e4 7736
8fef502e 7737 tpacpi_lifecycle = TPACPI_LIFE_RUNNING;
1da177e4
LT		 7738 return 0;
7739}
7740
95e57ab2
HMH		 7741MODULE_ALIAS(TPACPI_DRVR_SHORTNAME);
7742
f68080f8
HMH		 7743/*
7744 * DMI matching for module autoloading
7745 *
7746 * See http://thinkwiki.org/wiki/List_of_DMI_IDs
7747 * See http://thinkwiki.org/wiki/BIOS_Upgrade_Downloads
7748 *
7749 * Only models listed in thinkwiki will be supported, so add yours
7750 * if it is not there yet.
7751 */
7752#define IBM_BIOS_MODULE_ALIAS(__type) \
b36a50f9 7753 MODULE_ALIAS("dmi:bvnIBM:bvr" __type "ET??WW*")
f68080f8
HMH		 7754
7755/* Non-ancient thinkpads */
7756MODULE_ALIAS("dmi:bvnIBM:*:svnIBM:*:pvrThinkPad*:rvnIBM:*");
7757MODULE_ALIAS("dmi:bvnLENOVO:*:svnLENOVO:*:pvrThinkPad*:rvnLENOVO:*");
7758
7759/* Ancient thinkpad BIOSes have to be identified by
7760 * BIOS type or model number, and there are far less
7761 * BIOS types than model numbers... */
b36a50f9
MCS		 7762IBM_BIOS_MODULE_ALIAS("I[BDHIMNOTWVYZ]");
7763IBM_BIOS_MODULE_ALIAS("1[0368A-GIKM-PST]");
7764IBM_BIOS_MODULE_ALIAS("K[UX-Z]");
f68080f8
HMH		 7765
7766MODULE_AUTHOR("Borislav Deianov, Henrique de Moraes Holschuh");
e0c7dfe7
HMH		 7767MODULE_DESCRIPTION(TPACPI_DESC);
7768MODULE_VERSION(TPACPI_VERSION);
f68080f8
HMH		 7769MODULE_LICENSE("GPL");
7770
1def7115
HMH		 7771module_init(thinkpad_acpi_module_init);
7772module_exit(thinkpad_acpi_module_exit);
Linux kernel - Deliverables
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