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ACPI: thinkpad-acpi: don't misdetect in get_thinkpad_model_data() on -ENOMEM
[linux-2.6-block.git] / drivers / misc / thinkpad_acpi.c
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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>
6a2e293c 6 * Copyright (C) 2006-2008 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
490673dc 24#define TPACPI_VERSION "0.21"
50ebec09 25#define TPACPI_SYSFS_VERSION 0x020200
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>
57#include <linux/kthread.h>
58#include <linux/freezer.h>
59#include <linux/delay.h>
60
61#include <linux/nvram.h>
62#include <linux/proc_fs.h>
63#include <linux/sysfs.h>
64#include <linux/backlight.h>
65#include <linux/fb.h>
66#include <linux/platform_device.h>
67#include <linux/hwmon.h>
68#include <linux/hwmon-sysfs.h>
69#include <linux/input.h>
4fa6811b 70#include <linux/leds.h>
0e74dc26 71#include <linux/rfkill.h>
0c78039f
HMH		 72#include <asm/uaccess.h>
73
74#include <linux/dmi.h>
75#include <linux/jiffies.h>
76#include <linux/workqueue.h>
77
78#include <acpi/acpi_drivers.h>
79#include <acpi/acnamesp.h>
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
126
127/****************************************************************************
128 * Main driver
129 */
130
e0c7dfe7
HMH		 131#define TPACPI_NAME "thinkpad"
132#define TPACPI_DESC "ThinkPad ACPI Extras"
133#define TPACPI_FILE TPACPI_NAME "_acpi"
134#define TPACPI_URL "http://ibm-acpi.sf.net/"
135#define TPACPI_MAIL "ibm-acpi-devel@lists.sourceforge.net"
b21a15f6 136
e0c7dfe7
HMH		 137#define TPACPI_PROC_DIR "ibm"
138#define TPACPI_ACPI_EVENT_PREFIX "ibm"
139#define TPACPI_DRVR_NAME TPACPI_FILE
95e57ab2 140#define TPACPI_DRVR_SHORTNAME "tpacpi"
e0c7dfe7 141#define TPACPI_HWMON_DRVR_NAME TPACPI_NAME "_hwmon"
b21a15f6 142
95e57ab2 143#define TPACPI_NVRAM_KTHREAD_NAME "ktpacpi_nvramd"
e0e3c061 144#define TPACPI_WORKQUEUE_NAME "ktpacpid"
95e57ab2 145
e0c7dfe7 146#define TPACPI_MAX_ACPI_ARGS 3
b21a15f6 147
0e74dc26
HMH		 148/* rfkill switches */
149enum {
150 TPACPI_RFK_BLUETOOTH_SW_ID = 0,
151 TPACPI_RFK_WWAN_SW_ID,
152};
153
0c78039f 154/* Debugging */
e0c7dfe7
HMH		 155#define TPACPI_LOG TPACPI_FILE ": "
156#define TPACPI_ERR KERN_ERR TPACPI_LOG
157#define TPACPI_NOTICE KERN_NOTICE TPACPI_LOG
158#define TPACPI_INFO KERN_INFO TPACPI_LOG
159#define TPACPI_DEBUG KERN_DEBUG TPACPI_LOG
b21a15f6 160
0c78039f
HMH		 161#define TPACPI_DBG_ALL 0xffff
162#define TPACPI_DBG_ALL 0xffff
163#define TPACPI_DBG_INIT 0x0001
164#define TPACPI_DBG_EXIT 0x0002
165#define dbg_printk(a_dbg_level, format, arg...) \
166 do { if (dbg_level & a_dbg_level) \
35ff8b9f
HMH		 167 printk(TPACPI_DEBUG "%s: " format, __func__ , ## arg); \
168 } while (0)
0c78039f
HMH		 169#ifdef CONFIG_THINKPAD_ACPI_DEBUG
170#define vdbg_printk(a_dbg_level, format, arg...) \
171 dbg_printk(a_dbg_level, format, ## arg)
172static const char *str_supported(int is_supported);
173#else
174#define vdbg_printk(a_dbg_level, format, arg...)
175#endif
176
35ff8b9f
HMH		 177#define onoff(status, bit) ((status) & (1 << (bit)) ? "on" : "off")
178#define enabled(status, bit) ((status) & (1 << (bit)) ? "enabled" : "disabled")
179#define strlencmp(a, b) (strncmp((a), (b), strlen(b)))
0c78039f 180
0c78039f
HMH		 181
182/****************************************************************************
b21a15f6 183 * Driver-wide structs and misc. variables
0c78039f
HMH		 184 */
185
186struct ibm_struct;
187
188struct tp_acpi_drv_struct {
189 const struct acpi_device_id *hid;
190 struct acpi_driver *driver;
191
192 void (*notify) (struct ibm_struct *, u32);
193 acpi_handle *handle;
194 u32 type;
195 struct acpi_device *device;
196};
197
198struct ibm_struct {
199 char *name;
200
201 int (*read) (char *);
202 int (*write) (char *);
203 void (*exit) (void);
204 void (*resume) (void);
083f1760 205 void (*suspend) (pm_message_t state);
0c78039f
HMH		 206
207 struct list_head all_drivers;
208
209 struct tp_acpi_drv_struct *acpi;
210
211 struct {
212 u8 acpi_driver_registered:1;
213 u8 acpi_notify_installed:1;
214 u8 proc_created:1;
215 u8 init_called:1;
216 u8 experimental:1;
217 } flags;
218};
219
220struct ibm_init_struct {
221 char param[32];
222
223 int (*init) (struct ibm_init_struct *);
224 struct ibm_struct *data;
225};
226
227static struct {
228#ifdef CONFIG_THINKPAD_ACPI_BAY
229 u32 bay_status:1;
230 u32 bay_eject:1;
231 u32 bay_status2:1;
232 u32 bay_eject2:1;
233#endif
234 u32 bluetooth:1;
235 u32 hotkey:1;
236 u32 hotkey_mask:1;
237 u32 hotkey_wlsw:1;
6c231bd5 238 u32 hotkey_tablet:1;
0c78039f
HMH		 239 u32 light:1;
240 u32 light_status:1;
241 u32 bright_16levels:1;
b5972796 242 u32 bright_acpimode:1;
0c78039f
HMH		 243 u32 wan:1;
244 u32 fan_ctrl_status_undef:1;
245 u32 input_device_registered:1;
246 u32 platform_drv_registered:1;
247 u32 platform_drv_attrs_registered:1;
248 u32 sensors_pdrv_registered:1;
249 u32 sensors_pdrv_attrs_registered:1;
250 u32 sensors_pdev_attrs_registered:1;
251 u32 hotkey_poll_active:1;
252} tp_features;
253
92889022
HMH		 254static struct {
255 u16 hotkey_mask_ff:1;
2d5e94d7 256 u16 bright_cmos_ec_unsync:1;
92889022
HMH		 257} tp_warned;
258
0c78039f
HMH		 259struct thinkpad_id_data {
260 unsigned int vendor; /* ThinkPad vendor:
261 * PCI_VENDOR_ID_IBM/PCI_VENDOR_ID_LENOVO */
262
263 char *bios_version_str; /* Something like 1ZET51WW (1.03z) */
264 char *ec_version_str; /* Something like 1ZHT51WW-1.04a */
265
266 u16 bios_model; /* Big Endian, TP-1Y = 0x5931, 0 = unknown */
267 u16 ec_model;
268
8c74adbc
HMH		 269 char *model_str; /* ThinkPad T43 */
270 char *nummodel_str; /* 9384A9C for a 9384-A9C model */
0c78039f 271};
0c78039f
HMH		 272static struct thinkpad_id_data thinkpad_id;
273
8fef502e
HMH		 274static enum {
275 TPACPI_LIFE_INIT = 0,
276 TPACPI_LIFE_RUNNING,
277 TPACPI_LIFE_EXITING,
278} tpacpi_lifecycle;
279
b21a15f6
HMH		 280static int experimental;
281static u32 dbg_level;
282
e0e3c061
HMH		 283static struct workqueue_struct *tpacpi_wq;
284
4fa6811b
HMH		 285/* Special LED class that can defer work */
286struct tpacpi_led_classdev {
287 struct led_classdev led_classdev;
288 struct work_struct work;
289 enum led_brightness new_brightness;
af116101 290 unsigned int led;
4fa6811b
HMH		 291};
292
56b6aeb0
HMH		 293/****************************************************************************
294 ****************************************************************************
295 *
296 * ACPI Helpers and device model
297 *
298 ****************************************************************************
299 ****************************************************************************/
300
301/*************************************************************************
302 * ACPI basic handles
303 */
1da177e4 304
94954cc6 305static acpi_handle root_handle;
1da177e4 306
e0c7dfe7 307#define TPACPI_HANDLE(object, parent, paths...) \
1da177e4
LT		 308 static acpi_handle object##_handle; \
309 static acpi_handle *object##_parent = &parent##_handle; \
78f81cc4 310 static char *object##_path; \
1da177e4
LT		 311 static char *object##_paths[] = { paths }
312
e0c7dfe7 313TPACPI_HANDLE(ec, root, "\\_SB.PCI0.ISA.EC0", /* 240, 240x */
78f81cc4
BD		 314 "\\_SB.PCI.ISA.EC", /* 570 */
315 "\\_SB.PCI0.ISA0.EC0", /* 600e/x, 770e, 770x */
316 "\\_SB.PCI0.ISA.EC", /* A21e, A2xm/p, T20-22, X20-21 */
317 "\\_SB.PCI0.AD4S.EC0", /* i1400, R30 */
318 "\\_SB.PCI0.ICH3.EC0", /* R31 */
319 "\\_SB.PCI0.LPC.EC", /* all others */
56b6aeb0 320 );
78f81cc4 321
e0c7dfe7
HMH		 322TPACPI_HANDLE(ecrd, ec, "ECRD"); /* 570 */
323TPACPI_HANDLE(ecwr, ec, "ECWR"); /* 570 */
78f81cc4 324
35ff8b9f
HMH		 325TPACPI_HANDLE(cmos, root, "\\UCMS", /* R50, R50e, R50p, R51, */
326 /* T4x, X31, X40 */
78f81cc4
BD		 327 "\\CMOS", /* A3x, G4x, R32, T23, T30, X22-24, X30 */
328 "\\CMS", /* R40, R40e */
56b6aeb0 329 ); /* all others */
78f81cc4 330
e0c7dfe7 331TPACPI_HANDLE(hkey, ec, "\\_SB.HKEY", /* 600e/x, 770e, 770x */
78f81cc4
BD		 332 "^HKEY", /* R30, R31 */
333 "HKEY", /* all others */
56b6aeb0 334 ); /* 570 */
78f81cc4 335
d7c1d17d
HMH		 336TPACPI_HANDLE(vid, root, "\\_SB.PCI.AGP.VGA", /* 570 */
337 "\\_SB.PCI0.AGP0.VID0", /* 600e/x, 770x */
338 "\\_SB.PCI0.VID0", /* 770e */
339 "\\_SB.PCI0.VID", /* A21e, G4x, R50e, X30, X40 */
340 "\\_SB.PCI0.AGP.VID", /* all others */
341 ); /* R30, R31 */
342
78f81cc4 343
56b6aeb0
HMH		 344/*************************************************************************
345 * ACPI helpers
a8b7a662
HMH		 346 */
347
1da177e4
LT		 348static int acpi_evalf(acpi_handle handle,
349 void *res, char *method, char *fmt, ...)
350{
351 char *fmt0 = fmt;
78f81cc4 352 struct acpi_object_list params;
e0c7dfe7 353 union acpi_object in_objs[TPACPI_MAX_ACPI_ARGS];
78f81cc4
BD		 354 struct acpi_buffer result, *resultp;
355 union acpi_object out_obj;
356 acpi_status status;
357 va_list ap;
358 char res_type;
359 int success;
360 int quiet;
1da177e4
LT		 361
362 if (!*fmt) {
e0c7dfe7 363 printk(TPACPI_ERR "acpi_evalf() called with empty format\n");
1da177e4
LT		 364 return 0;
365 }
366
367 if (*fmt == 'q') {
368 quiet = 1;
369 fmt++;
370 } else
371 quiet = 0;
372
373 res_type = *(fmt++);
374
375 params.count = 0;
376 params.pointer = &in_objs[0];
377
378 va_start(ap, fmt);
379 while (*fmt) {
380 char c = *(fmt++);
381 switch (c) {
382 case 'd': /* int */
383 in_objs[params.count].integer.value = va_arg(ap, int);
384 in_objs[params.count++].type = ACPI_TYPE_INTEGER;
385 break;
78f81cc4 386 /* add more types as needed */
1da177e4 387 default:
e0c7dfe7 388 printk(TPACPI_ERR "acpi_evalf() called "
1da177e4
LT		 389 "with invalid format character '%c'\n", c);
390 return 0;
391 }
392 }
393 va_end(ap);
394
78f81cc4
BD		 395 if (res_type != 'v') {
396 result.length = sizeof(out_obj);
397 result.pointer = &out_obj;
398 resultp = &result;
399 } else
400 resultp = NULL;
1da177e4 401
78f81cc4 402 status = acpi_evaluate_object(handle, method, &params, resultp);
1da177e4
LT		 403
404 switch (res_type) {
78f81cc4 405 case 'd': /* int */
1da177e4
LT		 406 if (res)
407 *(int *)res = out_obj.integer.value;
408 success = status == AE_OK && out_obj.type == ACPI_TYPE_INTEGER;
409 break;
78f81cc4 410 case 'v': /* void */
1da177e4
LT		 411 success = status == AE_OK;
412 break;
78f81cc4 413 /* add more types as needed */
1da177e4 414 default:
e0c7dfe7 415 printk(TPACPI_ERR "acpi_evalf() called "
1da177e4
LT		 416 "with invalid format character '%c'\n", res_type);
417 return 0;
418 }
419
56b6aeb0 420 if (!success && !quiet)
e0c7dfe7 421 printk(TPACPI_ERR "acpi_evalf(%s, %s, ...) failed: %d\n",
56b6aeb0
HMH		 422 method, fmt0, status);
423
424 return success;
425}
426
35ff8b9f 427static int acpi_ec_read(int i, u8 *p)
56b6aeb0
HMH		 428{
429 int v;
430
431 if (ecrd_handle) {
432 if (!acpi_evalf(ecrd_handle, &v, NULL, "dd", i))
433 return 0;
434 *p = v;
435 } else {
436 if (ec_read(i, p) < 0)
437 return 0;
438 }
439
440 return 1;
441}
442
443static int acpi_ec_write(int i, u8 v)
444{
445 if (ecwr_handle) {
446 if (!acpi_evalf(ecwr_handle, NULL, NULL, "vdd", i, v))
447 return 0;
448 } else {
449 if (ec_write(i, v) < 0)
450 return 0;
451 }
452
453 return 1;
454}
455
013c40e4 456#if defined(CONFIG_THINKPAD_ACPI_DOCK) || defined(CONFIG_THINKPAD_ACPI_BAY)
56b6aeb0
HMH		 457static int _sta(acpi_handle handle)
458{
459 int status;
460
461 if (!handle || !acpi_evalf(handle, &status, "_STA", "d"))
462 status = 0;
463
464 return status;
465}
013c40e4 466#endif
56b6aeb0 467
c9bea99c
HMH		 468static int issue_thinkpad_cmos_command(int cmos_cmd)
469{
470 if (!cmos_handle)
471 return -ENXIO;
472
473 if (!acpi_evalf(cmos_handle, NULL, NULL, "vd", cmos_cmd))
474 return -EIO;
475
476 return 0;
477}
478
56b6aeb0
HMH		 479/*************************************************************************
480 * ACPI device model
481 */
482
35ff8b9f
HMH		 483#define TPACPI_ACPIHANDLE_INIT(object) \
484 drv_acpi_handle_init(#object, &object##_handle, *object##_parent, \
f74a27d4
HMH		 485 object##_paths, ARRAY_SIZE(object##_paths), &object##_path)
486
8d376cd6 487static void drv_acpi_handle_init(char *name,
5fba344c
HMH		 488 acpi_handle *handle, acpi_handle parent,
489 char **paths, int num_paths, char **path)
56b6aeb0
HMH		 490{
491 int i;
492 acpi_status status;
493
5ae930e6
HMH		 494 vdbg_printk(TPACPI_DBG_INIT, "trying to locate ACPI handle for %s\n",
495 name);
496
56b6aeb0
HMH		 497 for (i = 0; i < num_paths; i++) {
498 status = acpi_get_handle(parent, paths[i], handle);
499 if (ACPI_SUCCESS(status)) {
500 *path = paths[i];
5ae930e6
HMH		 501 dbg_printk(TPACPI_DBG_INIT,
502 "Found ACPI handle %s for %s\n",
503 *path, name);
56b6aeb0
HMH		 504 return;
505 }
506 }
507
5ae930e6
HMH		 508 vdbg_printk(TPACPI_DBG_INIT, "ACPI handle for %s not found\n",
509 name);
56b6aeb0
HMH		 510 *handle = NULL;
511}
512
8d376cd6 513static void dispatch_acpi_notify(acpi_handle handle, u32 event, void *data)
56b6aeb0
HMH		 514{
515 struct ibm_struct *ibm = data;
516
8fef502e
HMH		 517 if (tpacpi_lifecycle != TPACPI_LIFE_RUNNING)
518 return;
519
8d376cd6 520 if (!ibm || !ibm->acpi || !ibm->acpi->notify)
56b6aeb0
HMH		 521 return;
522
8d376cd6 523 ibm->acpi->notify(ibm, event);
56b6aeb0
HMH		 524}
525
8d376cd6 526static int __init setup_acpi_notify(struct ibm_struct *ibm)
56b6aeb0
HMH		 527{
528 acpi_status status;
5ae930e6 529 int rc;
56b6aeb0 530
8d376cd6
HMH		 531 BUG_ON(!ibm->acpi);
532
533 if (!*ibm->acpi->handle)
56b6aeb0
HMH		 534 return 0;
535
5ae930e6 536 vdbg_printk(TPACPI_DBG_INIT,
fe08bc4b
HMH		 537 "setting up ACPI notify for %s\n", ibm->name);
538
5ae930e6
HMH		 539 rc = acpi_bus_get_device(*ibm->acpi->handle, &ibm->acpi->device);
540 if (rc < 0) {
e0c7dfe7 541 printk(TPACPI_ERR "acpi_bus_get_device(%s) failed: %d\n",
5ae930e6 542 ibm->name, rc);
56b6aeb0
HMH		 543 return -ENODEV;
544 }
545
8d376cd6
HMH		 546 acpi_driver_data(ibm->acpi->device) = ibm;
547 sprintf(acpi_device_class(ibm->acpi->device), "%s/%s",
e0c7dfe7 548 TPACPI_ACPI_EVENT_PREFIX,
643f12db 549 ibm->name);
56b6aeb0 550
8d376cd6
HMH		 551 status = acpi_install_notify_handler(*ibm->acpi->handle,
552 ibm->acpi->type, dispatch_acpi_notify, ibm);
56b6aeb0
HMH		 553 if (ACPI_FAILURE(status)) {
554 if (status == AE_ALREADY_EXISTS) {
35ff8b9f
HMH		 555 printk(TPACPI_NOTICE
556 "another device driver is already "
557 "handling %s events\n", ibm->name);
56b6aeb0 558 } else {
35ff8b9f
HMH		 559 printk(TPACPI_ERR
560 "acpi_install_notify_handler(%s) failed: %d\n",
561 ibm->name, status);
56b6aeb0
HMH		 562 }
563 return -ENODEV;
564 }
8d376cd6 565 ibm->flags.acpi_notify_installed = 1;
56b6aeb0
HMH		 566 return 0;
567}
568
8d376cd6 569static int __init tpacpi_device_add(struct acpi_device *device)
56b6aeb0
HMH		 570{
571 return 0;
572}
573
6700121b 574static int __init register_tpacpi_subdriver(struct ibm_struct *ibm)
56b6aeb0 575{
5ae930e6 576 int rc;
56b6aeb0 577
fe08bc4b
HMH		 578 dbg_printk(TPACPI_DBG_INIT,
579 "registering %s as an ACPI driver\n", ibm->name);
580
8d376cd6
HMH		 581 BUG_ON(!ibm->acpi);
582
583 ibm->acpi->driver = kzalloc(sizeof(struct acpi_driver), GFP_KERNEL);
584 if (!ibm->acpi->driver) {
e0c7dfe7 585 printk(TPACPI_ERR "kzalloc(ibm->driver) failed\n");
5fba344c 586 return -ENOMEM;
56b6aeb0
HMH		 587 }
588
e0c7dfe7 589 sprintf(ibm->acpi->driver->name, "%s_%s", TPACPI_NAME, ibm->name);
8d376cd6 590 ibm->acpi->driver->ids = ibm->acpi->hid;
1ba90e3a 591
8d376cd6 592 ibm->acpi->driver->ops.add = &tpacpi_device_add;
56b6aeb0 593
5ae930e6
HMH		 594 rc = acpi_bus_register_driver(ibm->acpi->driver);
595 if (rc < 0) {
e0c7dfe7 596 printk(TPACPI_ERR "acpi_bus_register_driver(%s) failed: %d\n",
1ba90e3a 597 ibm->name, rc);
8d376cd6
HMH		 598 kfree(ibm->acpi->driver);
599 ibm->acpi->driver = NULL;
5ae930e6 600 } else if (!rc)
8d376cd6 601 ibm->flags.acpi_driver_registered = 1;
56b6aeb0 602
5ae930e6 603 return rc;
56b6aeb0
HMH		 604}
605
606
607/****************************************************************************
608 ****************************************************************************
609 *
610 * Procfs Helpers
611 *
612 ****************************************************************************
613 ****************************************************************************/
614
8d376cd6
HMH		 615static int dispatch_procfs_read(char *page, char **start, off_t off,
616 int count, int *eof, void *data)
56b6aeb0
HMH		 617{
618 struct ibm_struct *ibm = data;
619 int len;
620
621 if (!ibm || !ibm->read)
622 return -EINVAL;
623
624 len = ibm->read(page);
625 if (len < 0)
626 return len;
627
628 if (len <= off + count)
629 *eof = 1;
630 *start = page + off;
631 len -= off;
632 if (len > count)
633 len = count;
634 if (len < 0)
635 len = 0;
636
637 return len;
638}
639
8d376cd6 640static int dispatch_procfs_write(struct file *file,
35ff8b9f 641 const char __user *userbuf,
8d376cd6 642 unsigned long count, void *data)
56b6aeb0
HMH		 643{
644 struct ibm_struct *ibm = data;
645 char *kernbuf;
646 int ret;
647
648 if (!ibm || !ibm->write)
649 return -EINVAL;
650
651 kernbuf = kmalloc(count + 2, GFP_KERNEL);
652 if (!kernbuf)
653 return -ENOMEM;
1da177e4 654
56b6aeb0
HMH		 655 if (copy_from_user(kernbuf, userbuf, count)) {
656 kfree(kernbuf);
657 return -EFAULT;
658 }
1da177e4 659
56b6aeb0
HMH		 660 kernbuf[count] = 0;
661 strcat(kernbuf, ",");
662 ret = ibm->write(kernbuf);
663 if (ret == 0)
664 ret = count;
1da177e4 665
56b6aeb0
HMH		 666 kfree(kernbuf);
667
668 return ret;
1da177e4
LT		 669}
670
671static char *next_cmd(char **cmds)
672{
673 char *start = *cmds;
674 char *end;
675
676 while ((end = strchr(start, ',')) && end == start)
677 start = end + 1;
678
679 if (!end)
680 return NULL;
681
682 *end = 0;
683 *cmds = end + 1;
684 return start;
685}
686
56b6aeb0 687
54ae1501
HMH		 688/****************************************************************************
689 ****************************************************************************
690 *
7f5d1cd6 691 * Device model: input, hwmon and platform
54ae1501
HMH		 692 *
693 ****************************************************************************
694 ****************************************************************************/
695
94954cc6 696static struct platform_device *tpacpi_pdev;
7fd40029 697static struct platform_device *tpacpi_sensors_pdev;
1beeffe4 698static struct device *tpacpi_hwmon;
7f5d1cd6 699static struct input_dev *tpacpi_inputdev;
8523ed6f 700static struct mutex tpacpi_inputdev_send_mutex;
b21a15f6 701static LIST_HEAD(tpacpi_all_drivers);
e295e850 702
083f1760
HMH		 703static int tpacpi_suspend_handler(struct platform_device *pdev,
704 pm_message_t state)
705{
706 struct ibm_struct *ibm, *itmp;
707
708 list_for_each_entry_safe(ibm, itmp,
709 &tpacpi_all_drivers,
710 all_drivers) {
711 if (ibm->suspend)
712 (ibm->suspend)(state);
713 }
714
715 return 0;
716}
717
e295e850
HMH		 718static int tpacpi_resume_handler(struct platform_device *pdev)
719{
720 struct ibm_struct *ibm, *itmp;
721
722 list_for_each_entry_safe(ibm, itmp,
723 &tpacpi_all_drivers,
724 all_drivers) {
725 if (ibm->resume)
726 (ibm->resume)();
727 }
728
729 return 0;
730}
731
54ae1501
HMH		 732static struct platform_driver tpacpi_pdriver = {
733 .driver = {
e0c7dfe7 734 .name = TPACPI_DRVR_NAME,
54ae1501
HMH		 735 .owner = THIS_MODULE,
736 },
083f1760 737 .suspend = tpacpi_suspend_handler,
e295e850 738 .resume = tpacpi_resume_handler,
54ae1501
HMH		 739};
740
7fd40029
HMH		 741static struct platform_driver tpacpi_hwmon_pdriver = {
742 .driver = {
e0c7dfe7 743 .name = TPACPI_HWMON_DRVR_NAME,
7fd40029
HMH		 744 .owner = THIS_MODULE,
745 },
746};
54ae1501 747
176750d6 748/*************************************************************************
b21a15f6 749 * sysfs support helpers
176750d6
HMH		 750 */
751
b21a15f6
HMH		 752struct attribute_set {
753 unsigned int members, max_members;
754 struct attribute_group group;
176750d6
HMH		 755};
756
7252374a
HMH		 757struct attribute_set_obj {
758 struct attribute_set s;
759 struct attribute *a;
760} __attribute__((packed));
761
762static struct attribute_set *create_attr_set(unsigned int max_members,
35ff8b9f 763 const char *name)
7252374a
HMH		 764{
765 struct attribute_set_obj *sobj;
766
767 if (max_members == 0)
768 return NULL;
769
770 /* Allocates space for implicit NULL at the end too */
771 sobj = kzalloc(sizeof(struct attribute_set_obj) +
772 max_members * sizeof(struct attribute *),
773 GFP_KERNEL);
774 if (!sobj)
775 return NULL;
776 sobj->s.max_members = max_members;
777 sobj->s.group.attrs = &sobj->a;
778 sobj->s.group.name = name;
779
780 return &sobj->s;
781}
782
f74a27d4
HMH		 783#define destroy_attr_set(_set) \
784 kfree(_set);
785
7252374a 786/* not multi-threaded safe, use it in a single thread per set */
35ff8b9f 787static int add_to_attr_set(struct attribute_set *s, struct attribute *attr)
7252374a
HMH		 788{
789 if (!s || !attr)
790 return -EINVAL;
791
792 if (s->members >= s->max_members)
793 return -ENOMEM;
794
795 s->group.attrs[s->members] = attr;
796 s->members++;
797
798 return 0;
799}
800
35ff8b9f 801static int add_many_to_attr_set(struct attribute_set *s,
7252374a
HMH		 802 struct attribute **attr,
803 unsigned int count)
804{
805 int i, res;
806
807 for (i = 0; i < count; i++) {
808 res = add_to_attr_set(s, attr[i]);
809 if (res)
810 return res;
811 }
812
813 return 0;
814}
815
35ff8b9f 816static void delete_attr_set(struct attribute_set *s, struct kobject *kobj)
7252374a
HMH		 817{
818 sysfs_remove_group(kobj, &s->group);
819 destroy_attr_set(s);
820}
821
f74a27d4
HMH		 822#define register_attr_set_with_sysfs(_attr_set, _kobj) \
823 sysfs_create_group(_kobj, &_attr_set->group)
824
7252374a
HMH		 825static int parse_strtoul(const char *buf,
826 unsigned long max, unsigned long *value)
827{
828 char *endp;
829
32afbf07
HMH		 830 while (*buf && isspace(*buf))
831 buf++;
7252374a
HMH		 832 *value = simple_strtoul(buf, &endp, 0);
833 while (*endp && isspace(*endp))
834 endp++;
835 if (*endp || *value > max)
836 return -EINVAL;
837
838 return 0;
839}
840
b5972796
HMH		 841static int __init tpacpi_query_bcl_levels(acpi_handle handle)
842{
843 struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
844 union acpi_object *obj;
845 int rc;
846
847 if (ACPI_SUCCESS(acpi_evaluate_object(handle, NULL, NULL, &buffer))) {
848 obj = (union acpi_object *)buffer.pointer;
849 if (!obj || (obj->type != ACPI_TYPE_PACKAGE)) {
850 printk(TPACPI_ERR "Unknown _BCL data, "
851 "please report this to %s\n", TPACPI_MAIL);
852 rc = 0;
853 } else {
854 rc = obj->package.count;
855 }
856 } else {
857 return 0;
858 }
859
860 kfree(buffer.pointer);
861 return rc;
862}
863
864static acpi_status __init tpacpi_acpi_walk_find_bcl(acpi_handle handle,
865 u32 lvl, void *context, void **rv)
866{
867 char name[ACPI_PATH_SEGMENT_LENGTH];
868 struct acpi_buffer buffer = { sizeof(name), &name };
869
870 if (ACPI_SUCCESS(acpi_get_name(handle, ACPI_SINGLE_NAME, &buffer)) &&
871 !strncmp("_BCL", name, sizeof(name) - 1)) {
872 BUG_ON(!rv || !*rv);
873 **(int **)rv = tpacpi_query_bcl_levels(handle);
874 return AE_CTRL_TERMINATE;
875 } else {
876 return AE_OK;
877 }
878}
879
880/*
881 * Returns 0 (no ACPI _BCL or _BCL invalid), or size of brightness map
882 */
883static int __init tpacpi_check_std_acpi_brightness_support(void)
884{
885 int status;
886 int bcl_levels = 0;
887 void *bcl_ptr = &bcl_levels;
888
889 if (!vid_handle) {
890 TPACPI_ACPIHANDLE_INIT(vid);
891 }
892 if (!vid_handle)
893 return 0;
894
895 /*
896 * Search for a _BCL method, and execute it. This is safe on all
897 * ThinkPads, and as a side-effect, _BCL will place a Lenovo Vista
898 * BIOS in ACPI backlight control mode. We do NOT have to care
899 * about calling the _BCL method in an enabled video device, any
900 * will do for our purposes.
901 */
902
903 status = acpi_walk_namespace(ACPI_TYPE_METHOD, vid_handle, 3,
904 tpacpi_acpi_walk_find_bcl, NULL,
905 &bcl_ptr);
906
907 if (ACPI_SUCCESS(status) && bcl_levels > 2) {
908 tp_features.bright_acpimode = 1;
909 return (bcl_levels - 2);
910 }
911
912 return 0;
913}
914
0e74dc26
HMH		 915static int __init tpacpi_new_rfkill(const unsigned int id,
916 struct rfkill **rfk,
917 const enum rfkill_type rfktype,
918 const char *name,
919 int (*toggle_radio)(void *, enum rfkill_state),
920 int (*get_state)(void *, enum rfkill_state *))
921{
922 int res;
923 enum rfkill_state initial_state;
924
925 *rfk = rfkill_allocate(&tpacpi_pdev->dev, rfktype);
926 if (!*rfk) {
927 printk(TPACPI_ERR
928 "failed to allocate memory for rfkill class\n");
929 return -ENOMEM;
930 }
931
932 (*rfk)->name = name;
933 (*rfk)->get_state = get_state;
934 (*rfk)->toggle_radio = toggle_radio;
935
936 if (!get_state(NULL, &initial_state))
937 (*rfk)->state = initial_state;
938
939 res = rfkill_register(*rfk);
940 if (res < 0) {
941 printk(TPACPI_ERR
942 "failed to register %s rfkill switch: %d\n",
943 name, res);
944 rfkill_free(*rfk);
945 *rfk = NULL;
946 return res;
947 }
948
949 return 0;
950}
951
56b6aeb0 952/*************************************************************************
b21a15f6 953 * thinkpad-acpi driver attributes
56b6aeb0
HMH		 954 */
955
b21a15f6
HMH		 956/* interface_version --------------------------------------------------- */
957static ssize_t tpacpi_driver_interface_version_show(
958 struct device_driver *drv,
959 char *buf)
1da177e4 960{
b21a15f6
HMH		 961 return snprintf(buf, PAGE_SIZE, "0x%08x\n", TPACPI_SYSFS_VERSION);
962}
963
964static DRIVER_ATTR(interface_version, S_IRUGO,
965 tpacpi_driver_interface_version_show, NULL);
966
967/* debug_level --------------------------------------------------------- */
968static ssize_t tpacpi_driver_debug_show(struct device_driver *drv,
969 char *buf)
970{
971 return snprintf(buf, PAGE_SIZE, "0x%04x\n", dbg_level);
972}
973
974static ssize_t tpacpi_driver_debug_store(struct device_driver *drv,
975 const char *buf, size_t count)
976{
977 unsigned long t;
978
979 if (parse_strtoul(buf, 0xffff, &t))
980 return -EINVAL;
981
982 dbg_level = t;
983
984 return count;
985}
986
987static DRIVER_ATTR(debug_level, S_IWUSR | S_IRUGO,
988 tpacpi_driver_debug_show, tpacpi_driver_debug_store);
989
990/* version ------------------------------------------------------------- */
991static ssize_t tpacpi_driver_version_show(struct device_driver *drv,
992 char *buf)
993{
35ff8b9f
HMH		 994 return snprintf(buf, PAGE_SIZE, "%s v%s\n",
995 TPACPI_DESC, TPACPI_VERSION);
b21a15f6
HMH		 996}
997
998static DRIVER_ATTR(version, S_IRUGO,
999 tpacpi_driver_version_show, NULL);
1000
1001/* --------------------------------------------------------------------- */
1002
35ff8b9f 1003static struct driver_attribute *tpacpi_driver_attributes[] = {
b21a15f6
HMH		 1004 &driver_attr_debug_level, &driver_attr_version,
1005 &driver_attr_interface_version,
1006};
1007
1008static int __init tpacpi_create_driver_attributes(struct device_driver *drv)
1009{
1010 int i, res;
1011
1012 i = 0;
1013 res = 0;
1014 while (!res && i < ARRAY_SIZE(tpacpi_driver_attributes)) {
1015 res = driver_create_file(drv, tpacpi_driver_attributes[i]);
1016 i++;
1017 }
1018
1019 return res;
1020}
1021
1022static void tpacpi_remove_driver_attributes(struct device_driver *drv)
1023{
1024 int i;
1025
35ff8b9f 1026 for (i = 0; i < ARRAY_SIZE(tpacpi_driver_attributes); i++)
b21a15f6
HMH		 1027 driver_remove_file(drv, tpacpi_driver_attributes[i]);
1028}
1029
1030/****************************************************************************
1031 ****************************************************************************
1032 *
1033 * Subdrivers
1034 *
1035 ****************************************************************************
1036 ****************************************************************************/
1037
1038/*************************************************************************
1039 * thinkpad-acpi init subdriver
1040 */
1041
1042static int __init thinkpad_acpi_driver_init(struct ibm_init_struct *iibm)
1043{
e0c7dfe7
HMH		 1044 printk(TPACPI_INFO "%s v%s\n", TPACPI_DESC, TPACPI_VERSION);
1045 printk(TPACPI_INFO "%s\n", TPACPI_URL);
b21a15f6 1046
e0c7dfe7 1047 printk(TPACPI_INFO "ThinkPad BIOS %s, EC %s\n",
b21a15f6
HMH		 1048 (thinkpad_id.bios_version_str) ?
1049 thinkpad_id.bios_version_str : "unknown",
1050 (thinkpad_id.ec_version_str) ?
1051 thinkpad_id.ec_version_str : "unknown");
d5a2f2f1
HMH		 1052
1053 if (thinkpad_id.vendor && thinkpad_id.model_str)
8c74adbc 1054 printk(TPACPI_INFO "%s %s, model %s\n",
d5a2f2f1
HMH		 1055 (thinkpad_id.vendor == PCI_VENDOR_ID_IBM) ?
1056 "IBM" : ((thinkpad_id.vendor ==
1057 PCI_VENDOR_ID_LENOVO) ?
1058 "Lenovo" : "Unknown vendor"),
8c74adbc
HMH		 1059 thinkpad_id.model_str,
1060 (thinkpad_id.nummodel_str) ?
1061 thinkpad_id.nummodel_str : "unknown");
3945ac36 1062
1da177e4
LT		 1063 return 0;
1064}
1065
643f12db 1066static int thinkpad_acpi_driver_read(char *p)
1da177e4
LT		 1067{
1068 int len = 0;
1069
e0c7dfe7
HMH		 1070 len += sprintf(p + len, "driver:\t\t%s\n", TPACPI_DESC);
1071 len += sprintf(p + len, "version:\t%s\n", TPACPI_VERSION);
1da177e4
LT		 1072
1073 return len;
1074}
1075
a5763f22
HMH		 1076static struct ibm_struct thinkpad_acpi_driver_data = {
1077 .name = "driver",
1078 .read = thinkpad_acpi_driver_read,
1079};
1080
56b6aeb0
HMH		 1081/*************************************************************************
1082 * Hotkey subdriver
1083 */
1084
f74a27d4
HMH		 1085enum { /* hot key scan codes (derived from ACPI DSDT) */
1086 TP_ACPI_HOTKEYSCAN_FNF1 = 0,
1087 TP_ACPI_HOTKEYSCAN_FNF2,
1088 TP_ACPI_HOTKEYSCAN_FNF3,
1089 TP_ACPI_HOTKEYSCAN_FNF4,
1090 TP_ACPI_HOTKEYSCAN_FNF5,
1091 TP_ACPI_HOTKEYSCAN_FNF6,
1092 TP_ACPI_HOTKEYSCAN_FNF7,
1093 TP_ACPI_HOTKEYSCAN_FNF8,
1094 TP_ACPI_HOTKEYSCAN_FNF9,
1095 TP_ACPI_HOTKEYSCAN_FNF10,
1096 TP_ACPI_HOTKEYSCAN_FNF11,
1097 TP_ACPI_HOTKEYSCAN_FNF12,
1098 TP_ACPI_HOTKEYSCAN_FNBACKSPACE,
1099 TP_ACPI_HOTKEYSCAN_FNINSERT,
1100 TP_ACPI_HOTKEYSCAN_FNDELETE,
1101 TP_ACPI_HOTKEYSCAN_FNHOME,
1102 TP_ACPI_HOTKEYSCAN_FNEND,
1103 TP_ACPI_HOTKEYSCAN_FNPAGEUP,
1104 TP_ACPI_HOTKEYSCAN_FNPAGEDOWN,
1105 TP_ACPI_HOTKEYSCAN_FNSPACE,
1106 TP_ACPI_HOTKEYSCAN_VOLUMEUP,
1107 TP_ACPI_HOTKEYSCAN_VOLUMEDOWN,
1108 TP_ACPI_HOTKEYSCAN_MUTE,
1109 TP_ACPI_HOTKEYSCAN_THINKPAD,
1110};
1111
01e88f25
HMH		 1112enum { /* Keys available through NVRAM polling */
1113 TPACPI_HKEY_NVRAM_KNOWN_MASK = 0x00fb88c0U,
1114 TPACPI_HKEY_NVRAM_GOOD_MASK = 0x00fb8000U,
1115};
1116
1117enum { /* Positions of some of the keys in hotkey masks */
1118 TP_ACPI_HKEY_DISPSWTCH_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNF7,
1119 TP_ACPI_HKEY_DISPXPAND_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNF8,
1120 TP_ACPI_HKEY_HIBERNATE_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNF12,
1121 TP_ACPI_HKEY_BRGHTUP_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNHOME,
1122 TP_ACPI_HKEY_BRGHTDWN_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNEND,
1123 TP_ACPI_HKEY_THNKLGHT_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNPAGEUP,
1124 TP_ACPI_HKEY_ZOOM_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNSPACE,
1125 TP_ACPI_HKEY_VOLUP_MASK = 1 << TP_ACPI_HOTKEYSCAN_VOLUMEUP,
1126 TP_ACPI_HKEY_VOLDWN_MASK = 1 << TP_ACPI_HOTKEYSCAN_VOLUMEDOWN,
1127 TP_ACPI_HKEY_MUTE_MASK = 1 << TP_ACPI_HOTKEYSCAN_MUTE,
1128 TP_ACPI_HKEY_THINKPAD_MASK = 1 << TP_ACPI_HOTKEYSCAN_THINKPAD,
1129};
1130
1131enum { /* NVRAM to ACPI HKEY group map */
1132 TP_NVRAM_HKEY_GROUP_HK2 = TP_ACPI_HKEY_THINKPAD_MASK |
1133 TP_ACPI_HKEY_ZOOM_MASK |
1134 TP_ACPI_HKEY_DISPSWTCH_MASK |
1135 TP_ACPI_HKEY_HIBERNATE_MASK,
1136 TP_NVRAM_HKEY_GROUP_BRIGHTNESS = TP_ACPI_HKEY_BRGHTUP_MASK |
1137 TP_ACPI_HKEY_BRGHTDWN_MASK,
1138 TP_NVRAM_HKEY_GROUP_VOLUME = TP_ACPI_HKEY_VOLUP_MASK |
1139 TP_ACPI_HKEY_VOLDWN_MASK |
1140 TP_ACPI_HKEY_MUTE_MASK,
1141};
1142
1143#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
1144struct tp_nvram_state {
1145 u16 thinkpad_toggle:1;
1146 u16 zoom_toggle:1;
1147 u16 display_toggle:1;
1148 u16 thinklight_toggle:1;
1149 u16 hibernate_toggle:1;
1150 u16 displayexp_toggle:1;
1151 u16 display_state:1;
1152 u16 brightness_toggle:1;
1153 u16 volume_toggle:1;
1154 u16 mute:1;
1155
1156 u8 brightness_level;
1157 u8 volume_level;
1158};
1159
1160static struct task_struct *tpacpi_hotkey_task;
1161static u32 hotkey_source_mask; /* bit mask 0=ACPI,1=NVRAM */
1162static int hotkey_poll_freq = 10; /* Hz */
1163static struct mutex hotkey_thread_mutex;
1164static struct mutex hotkey_thread_data_mutex;
1165static unsigned int hotkey_config_change;
1166
1167#else /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
1168
1169#define hotkey_source_mask 0U
1170
1171#endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
1172
f74a27d4
HMH		 1173static struct mutex hotkey_mutex;
1174
a713b4d7
HMH		 1175static enum { /* Reasons for waking up */
1176 TP_ACPI_WAKEUP_NONE = 0, /* None or unknown */
1177 TP_ACPI_WAKEUP_BAYEJ, /* Bay ejection request */
1178 TP_ACPI_WAKEUP_UNDOCK, /* Undock request */
1179} hotkey_wakeup_reason;
1180
1181static int hotkey_autosleep_ack;
1182
78f81cc4 1183static int hotkey_orig_status;
ae92bd17 1184static u32 hotkey_orig_mask;
9b010de5 1185static u32 hotkey_all_mask;
6a38abbf 1186static u32 hotkey_reserved_mask;
b2c985e7 1187static u32 hotkey_mask;
6a38abbf 1188
b21a15f6
HMH		 1189static unsigned int hotkey_report_mode;
1190
edf0e0e5 1191static u16 *hotkey_keycode_map;
78f81cc4 1192
94954cc6 1193static struct attribute_set *hotkey_dev_attributes;
a0416420 1194
01e88f25
HMH		 1195#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
1196#define HOTKEY_CONFIG_CRITICAL_START \
35ff8b9f
HMH		 1197 do { \
1198 mutex_lock(&hotkey_thread_data_mutex); \
1199 hotkey_config_change++; \
1200 } while (0);
01e88f25
HMH		 1201#define HOTKEY_CONFIG_CRITICAL_END \
1202 mutex_unlock(&hotkey_thread_data_mutex);
1203#else
1204#define HOTKEY_CONFIG_CRITICAL_START
1205#define HOTKEY_CONFIG_CRITICAL_END
1206#endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
1207
6c231bd5
HMH		 1208/* HKEY.MHKG() return bits */
1209#define TP_HOTKEY_TABLET_MASK (1 << 3)
1210
74941a69
HMH		 1211static int hotkey_get_wlsw(int *status)
1212{
1213 if (!acpi_evalf(hkey_handle, status, "WLSW", "d"))
1214 return -EIO;
1215 return 0;
1216}
1217
6c231bd5
HMH		 1218static int hotkey_get_tablet_mode(int *status)
1219{
1220 int s;
1221
1222 if (!acpi_evalf(hkey_handle, &s, "MHKG", "d"))
1223 return -EIO;
1224
cee47f5a
HMH		 1225 *status = ((s & TP_HOTKEY_TABLET_MASK) != 0);
1226 return 0;
6c231bd5
HMH		 1227}
1228
b2c985e7
HMH		 1229/*
1230 * Call with hotkey_mutex held
1231 */
1232static int hotkey_mask_get(void)
1233{
01e88f25
HMH		 1234 u32 m = 0;
1235
b2c985e7 1236 if (tp_features.hotkey_mask) {
01e88f25 1237 if (!acpi_evalf(hkey_handle, &m, "DHKN", "d"))
b2c985e7
HMH		 1238 return -EIO;
1239 }
01e88f25 1240 hotkey_mask = m | (hotkey_source_mask & hotkey_mask);
b2c985e7
HMH		 1241
1242 return 0;
1243}
1244
1245/*
1246 * Call with hotkey_mutex held
1247 */
1248static int hotkey_mask_set(u32 mask)
1249{
1250 int i;
1251 int rc = 0;
1252
1253 if (tp_features.hotkey_mask) {
92889022
HMH		 1254 if (!tp_warned.hotkey_mask_ff &&
1255 (mask == 0xffff || mask == 0xffffff ||
1256 mask == 0xffffffff)) {
1257 tp_warned.hotkey_mask_ff = 1;
1258 printk(TPACPI_NOTICE
1259 "setting the hotkey mask to 0x%08x is likely "
1260 "not the best way to go about it\n", mask);
1261 printk(TPACPI_NOTICE
1262 "please consider using the driver defaults, "
1263 "and refer to up-to-date thinkpad-acpi "
1264 "documentation\n");
1265 }
1266
01e88f25 1267 HOTKEY_CONFIG_CRITICAL_START
b2c985e7
HMH		 1268 for (i = 0; i < 32; i++) {
1269 u32 m = 1 << i;
01e88f25
HMH		 1270 /* enable in firmware mask only keys not in NVRAM
1271 * mode, but enable the key in the cached hotkey_mask
1272 * regardless of mode, or the key will end up
1273 * disabled by hotkey_mask_get() */
b2c985e7
HMH		 1274 if (!acpi_evalf(hkey_handle,
1275 NULL, "MHKM", "vdd", i + 1,
01e88f25 1276 !!((mask & ~hotkey_source_mask) & m))) {
b2c985e7
HMH		 1277 rc = -EIO;
1278 break;
1279 } else {
1280 hotkey_mask = (hotkey_mask & ~m) | (mask & m);
1281 }
1282 }
01e88f25 1283 HOTKEY_CONFIG_CRITICAL_END
b2c985e7
HMH		 1284
1285 /* hotkey_mask_get must be called unconditionally below */
01e88f25
HMH		 1286 if (!hotkey_mask_get() && !rc &&
1287 (hotkey_mask & ~hotkey_source_mask) !=
1288 (mask & ~hotkey_source_mask)) {
e0c7dfe7 1289 printk(TPACPI_NOTICE
b2c985e7
HMH		 1290 "requested hot key mask 0x%08x, but "
1291 "firmware forced it to 0x%08x\n",
1292 mask, hotkey_mask);
1293 }
01e88f25
HMH		 1294 } else {
1295#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
1296 HOTKEY_CONFIG_CRITICAL_START
1297 hotkey_mask = mask & hotkey_source_mask;
1298 HOTKEY_CONFIG_CRITICAL_END
1299 hotkey_mask_get();
1300 if (hotkey_mask != mask) {
e0c7dfe7 1301 printk(TPACPI_NOTICE
01e88f25
HMH		 1302 "requested hot key mask 0x%08x, "
1303 "forced to 0x%08x (NVRAM poll mask is "
1304 "0x%08x): no firmware mask support\n",
1305 mask, hotkey_mask, hotkey_source_mask);
1306 }
1307#else
1308 hotkey_mask_get();
1309 rc = -ENXIO;
1310#endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
b2c985e7
HMH		 1311 }
1312
1313 return rc;
1314}
1315
1316static int hotkey_status_get(int *status)
1317{
1318 if (!acpi_evalf(hkey_handle, status, "DHKC", "d"))
1319 return -EIO;
1320
1321 return 0;
1322}
1323
1324static int hotkey_status_set(int status)
1325{
1326 if (!acpi_evalf(hkey_handle, NULL, "MHKC", "vd", status))
1327 return -EIO;
1328
1329 return 0;
1330}
1331
6c231bd5 1332static void tpacpi_input_send_tabletsw(void)
b3ec6f91 1333{
6c231bd5 1334 int state;
b3ec6f91 1335
6c231bd5
HMH		 1336 if (tp_features.hotkey_tablet &&
1337 !hotkey_get_tablet_mode(&state)) {
1338 mutex_lock(&tpacpi_inputdev_send_mutex);
b3ec6f91 1339
6c231bd5
HMH		 1340 input_report_switch(tpacpi_inputdev,
1341 SW_TABLET_MODE, !!state);
1342 input_sync(tpacpi_inputdev);
1343
1344 mutex_unlock(&tpacpi_inputdev_send_mutex);
1345 }
b3ec6f91
HMH		 1346}
1347
b7c8c200
HMH		 1348static void tpacpi_input_send_key(unsigned int scancode)
1349{
1350 unsigned int keycode;
1351
1352 keycode = hotkey_keycode_map[scancode];
1353
1354 if (keycode != KEY_RESERVED) {
1355 mutex_lock(&tpacpi_inputdev_send_mutex);
1356
1357 input_report_key(tpacpi_inputdev, keycode, 1);
1358 if (keycode == KEY_UNKNOWN)
1359 input_event(tpacpi_inputdev, EV_MSC, MSC_SCAN,
1360 scancode);
1361 input_sync(tpacpi_inputdev);
1362
1363 input_report_key(tpacpi_inputdev, keycode, 0);
1364 if (keycode == KEY_UNKNOWN)
1365 input_event(tpacpi_inputdev, EV_MSC, MSC_SCAN,
1366 scancode);
1367 input_sync(tpacpi_inputdev);
1368
1369 mutex_unlock(&tpacpi_inputdev_send_mutex);
1370 }
1371}
1372
01e88f25
HMH		 1373#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
1374static struct tp_acpi_drv_struct ibm_hotkey_acpidriver;
1375
1376static void tpacpi_hotkey_send_key(unsigned int scancode)
1377{
1378 tpacpi_input_send_key(scancode);
1379 if (hotkey_report_mode < 2) {
1380 acpi_bus_generate_proc_event(ibm_hotkey_acpidriver.device,
1381 0x80, 0x1001 + scancode);
1382 }
1383}
1384
1385static void hotkey_read_nvram(struct tp_nvram_state *n, u32 m)
1386{
1387 u8 d;
1388
1389 if (m & TP_NVRAM_HKEY_GROUP_HK2) {
1390 d = nvram_read_byte(TP_NVRAM_ADDR_HK2);
1391 n->thinkpad_toggle = !!(d & TP_NVRAM_MASK_HKT_THINKPAD);
1392 n->zoom_toggle = !!(d & TP_NVRAM_MASK_HKT_ZOOM);
1393 n->display_toggle = !!(d & TP_NVRAM_MASK_HKT_DISPLAY);
1394 n->hibernate_toggle = !!(d & TP_NVRAM_MASK_HKT_HIBERNATE);
1395 }
1396 if (m & TP_ACPI_HKEY_THNKLGHT_MASK) {
1397 d = nvram_read_byte(TP_NVRAM_ADDR_THINKLIGHT);
1398 n->thinklight_toggle = !!(d & TP_NVRAM_MASK_THINKLIGHT);
1399 }
1400 if (m & TP_ACPI_HKEY_DISPXPAND_MASK) {
1401 d = nvram_read_byte(TP_NVRAM_ADDR_VIDEO);
1402 n->displayexp_toggle =
1403 !!(d & TP_NVRAM_MASK_HKT_DISPEXPND);
1404 }
1405 if (m & TP_NVRAM_HKEY_GROUP_BRIGHTNESS) {
1406 d = nvram_read_byte(TP_NVRAM_ADDR_BRIGHTNESS);
1407 n->brightness_level = (d & TP_NVRAM_MASK_LEVEL_BRIGHTNESS)
1408 >> TP_NVRAM_POS_LEVEL_BRIGHTNESS;
1409 n->brightness_toggle =
1410 !!(d & TP_NVRAM_MASK_HKT_BRIGHTNESS);
1411 }
1412 if (m & TP_NVRAM_HKEY_GROUP_VOLUME) {
1413 d = nvram_read_byte(TP_NVRAM_ADDR_MIXER);
1414 n->volume_level = (d & TP_NVRAM_MASK_LEVEL_VOLUME)
1415 >> TP_NVRAM_POS_LEVEL_VOLUME;
1416 n->mute = !!(d & TP_NVRAM_MASK_MUTE);
1417 n->volume_toggle = !!(d & TP_NVRAM_MASK_HKT_VOLUME);
1418 }
1419}
1420
1421#define TPACPI_COMPARE_KEY(__scancode, __member) \
35ff8b9f
HMH		 1422 do { \
1423 if ((mask & (1 << __scancode)) && \
1424 oldn->__member != newn->__member) \
1425 tpacpi_hotkey_send_key(__scancode); \
1426 } while (0)
01e88f25
HMH		 1427
1428#define TPACPI_MAY_SEND_KEY(__scancode) \
1429 do { if (mask & (1 << __scancode)) \
1430 tpacpi_hotkey_send_key(__scancode); } while (0)
1431
1432static void hotkey_compare_and_issue_event(struct tp_nvram_state *oldn,
35ff8b9f 1433 struct tp_nvram_state *newn,
01e88f25
HMH		 1434 u32 mask)
1435{
1436 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_THINKPAD, thinkpad_toggle);
1437 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNSPACE, zoom_toggle);
1438 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNF7, display_toggle);
1439 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNF12, hibernate_toggle);
1440
1441 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNPAGEUP, thinklight_toggle);
1442
1443 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNF8, displayexp_toggle);
1444
1445 /* handle volume */
1446 if (oldn->volume_toggle != newn->volume_toggle) {
1447 if (oldn->mute != newn->mute) {
1448 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_MUTE);
1449 }
1450 if (oldn->volume_level > newn->volume_level) {
1451 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEDOWN);
1452 } else if (oldn->volume_level < newn->volume_level) {
1453 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEUP);
1454 } else if (oldn->mute == newn->mute) {
1455 /* repeated key presses that didn't change state */
1456 if (newn->mute) {
1457 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_MUTE);
1458 } else if (newn->volume_level != 0) {
1459 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEUP);
1460 } else {
1461 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEDOWN);
1462 }
1463 }
1464 }
1465
1466 /* handle brightness */
1467 if (oldn->brightness_toggle != newn->brightness_toggle) {
1468 if (oldn->brightness_level < newn->brightness_level) {
1469 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNHOME);
1470 } else if (oldn->brightness_level > newn->brightness_level) {
1471 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNEND);
1472 } else {
1473 /* repeated key presses that didn't change state */
1474 if (newn->brightness_level != 0) {
1475 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNHOME);
1476 } else {
1477 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNEND);
1478 }
1479 }
1480 }
1481}
1482
1483#undef TPACPI_COMPARE_KEY
1484#undef TPACPI_MAY_SEND_KEY
1485
1486static int hotkey_kthread(void *data)
1487{
1488 struct tp_nvram_state s[2];
1489 u32 mask;
1490 unsigned int si, so;
1491 unsigned long t;
1492 unsigned int change_detector, must_reset;
1493
1494 mutex_lock(&hotkey_thread_mutex);
1495
1496 if (tpacpi_lifecycle == TPACPI_LIFE_EXITING)
1497 goto exit;
1498
1499 set_freezable();
1500
1501 so = 0;
1502 si = 1;
1503 t = 0;
1504
1505 /* Initial state for compares */
1506 mutex_lock(&hotkey_thread_data_mutex);
1507 change_detector = hotkey_config_change;
1508 mask = hotkey_source_mask & hotkey_mask;
1509 mutex_unlock(&hotkey_thread_data_mutex);
1510 hotkey_read_nvram(&s[so], mask);
1511
1512 while (!kthread_should_stop() && hotkey_poll_freq) {
1513 if (t == 0)
1514 t = 1000/hotkey_poll_freq;
1515 t = msleep_interruptible(t);
1516 if (unlikely(kthread_should_stop()))
1517 break;
1518 must_reset = try_to_freeze();
1519 if (t > 0 && !must_reset)
1520 continue;
1521
1522 mutex_lock(&hotkey_thread_data_mutex);
1523 if (must_reset || hotkey_config_change != change_detector) {
1524 /* forget old state on thaw or config change */
1525 si = so;
1526 t = 0;
1527 change_detector = hotkey_config_change;
1528 }
1529 mask = hotkey_source_mask & hotkey_mask;
1530 mutex_unlock(&hotkey_thread_data_mutex);
1531
1532 if (likely(mask)) {
1533 hotkey_read_nvram(&s[si], mask);
1534 if (likely(si != so)) {
1535 hotkey_compare_and_issue_event(&s[so], &s[si],
35ff8b9f 1536 mask);
01e88f25
HMH		 1537 }
1538 }
1539
1540 so = si;
1541 si ^= 1;
1542 }
1543
1544exit:
1545 mutex_unlock(&hotkey_thread_mutex);
1546 return 0;
1547}
1548
1549static void hotkey_poll_stop_sync(void)
1550{
1551 if (tpacpi_hotkey_task) {
1552 if (frozen(tpacpi_hotkey_task) ||
1553 freezing(tpacpi_hotkey_task))
1554 thaw_process(tpacpi_hotkey_task);
1555
1556 kthread_stop(tpacpi_hotkey_task);
1557 tpacpi_hotkey_task = NULL;
1558 mutex_lock(&hotkey_thread_mutex);
1559 /* at this point, the thread did exit */
1560 mutex_unlock(&hotkey_thread_mutex);
1561 }
1562}
1563
1564/* call with hotkey_mutex held */
1565static void hotkey_poll_setup(int may_warn)
1566{
1567 if ((hotkey_source_mask & hotkey_mask) != 0 &&
1568 hotkey_poll_freq > 0 &&
1569 (tpacpi_inputdev->users > 0 || hotkey_report_mode < 2)) {
1570 if (!tpacpi_hotkey_task) {
1571 tpacpi_hotkey_task = kthread_run(hotkey_kthread,
95e57ab2 1572 NULL, TPACPI_NVRAM_KTHREAD_NAME);
01e88f25
HMH		 1573 if (IS_ERR(tpacpi_hotkey_task)) {
1574 tpacpi_hotkey_task = NULL;
35ff8b9f
HMH		 1575 printk(TPACPI_ERR
1576 "could not create kernel thread "
01e88f25
HMH		 1577 "for hotkey polling\n");
1578 }
1579 }
1580 } else {
1581 hotkey_poll_stop_sync();
1582 if (may_warn &&
1583 hotkey_source_mask != 0 && hotkey_poll_freq == 0) {
35ff8b9f
HMH		 1584 printk(TPACPI_NOTICE
1585 "hot keys 0x%08x require polling, "
01e88f25
HMH		 1586 "which is currently disabled\n",
1587 hotkey_source_mask);
1588 }
1589 }
1590}
1591
1592static void hotkey_poll_setup_safe(int may_warn)
1593{
1594 mutex_lock(&hotkey_mutex);
1595 hotkey_poll_setup(may_warn);
1596 mutex_unlock(&hotkey_mutex);
1597}
1598
1bc6b9cd
HMH		 1599#else /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
1600
1601static void hotkey_poll_setup_safe(int __unused)
1602{
1603}
1604
1605#endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
1606
01e88f25
HMH		 1607static int hotkey_inputdev_open(struct input_dev *dev)
1608{
1609 switch (tpacpi_lifecycle) {
1610 case TPACPI_LIFE_INIT:
1611 /*
1612 * hotkey_init will call hotkey_poll_setup_safe
1613 * at the appropriate moment
1614 */
1615 return 0;
1616 case TPACPI_LIFE_EXITING:
1617 return -EBUSY;
1618 case TPACPI_LIFE_RUNNING:
1619 hotkey_poll_setup_safe(0);
1620 return 0;
1621 }
1622
1623 /* Should only happen if tpacpi_lifecycle is corrupt */
1624 BUG();
1625 return -EBUSY;
1626}
1627
1628static void hotkey_inputdev_close(struct input_dev *dev)
1629{
1630 /* disable hotkey polling when possible */
1631 if (tpacpi_lifecycle == TPACPI_LIFE_RUNNING)
1632 hotkey_poll_setup_safe(0);
1633}
01e88f25 1634
a0416420
HMH		 1635/* sysfs hotkey enable ------------------------------------------------- */
1636static ssize_t hotkey_enable_show(struct device *dev,
1637 struct device_attribute *attr,
1638 char *buf)
1639{
ae92bd17 1640 int res, status;
a0416420 1641
b2c985e7 1642 res = hotkey_status_get(&status);
a0416420
HMH		 1643 if (res)
1644 return res;
1645
1646 return snprintf(buf, PAGE_SIZE, "%d\n", status);
1647}
1648
1649static ssize_t hotkey_enable_store(struct device *dev,
1650 struct device_attribute *attr,
1651 const char *buf, size_t count)
1652{
1653 unsigned long t;
b2c985e7 1654 int res;
a0416420
HMH		 1655
1656 if (parse_strtoul(buf, 1, &t))
1657 return -EINVAL;
1658
b2c985e7 1659 res = hotkey_status_set(t);
a0416420
HMH		 1660
1661 return (res) ? res : count;
1662}
1663
1664static struct device_attribute dev_attr_hotkey_enable =
cc4c24e1 1665 __ATTR(hotkey_enable, S_IWUSR | S_IRUGO,
a0416420
HMH		 1666 hotkey_enable_show, hotkey_enable_store);
1667
1668/* sysfs hotkey mask --------------------------------------------------- */
1669static ssize_t hotkey_mask_show(struct device *dev,
1670 struct device_attribute *attr,
1671 char *buf)
1672{
b2c985e7 1673 int res;
a0416420 1674
b2c985e7
HMH		 1675 if (mutex_lock_interruptible(&hotkey_mutex))
1676 return -ERESTARTSYS;
1677 res = hotkey_mask_get();
1678 mutex_unlock(&hotkey_mutex);
a0416420 1679
b2c985e7
HMH		 1680 return (res)?
1681 res : snprintf(buf, PAGE_SIZE, "0x%08x\n", hotkey_mask);
a0416420
HMH		 1682}
1683
1684static ssize_t hotkey_mask_store(struct device *dev,
1685 struct device_attribute *attr,
1686 const char *buf, size_t count)
1687{
1688 unsigned long t;
b2c985e7 1689 int res;
a0416420 1690
ae92bd17 1691 if (parse_strtoul(buf, 0xffffffffUL, &t))
a0416420
HMH		 1692 return -EINVAL;
1693
b2c985e7
HMH		 1694 if (mutex_lock_interruptible(&hotkey_mutex))
1695 return -ERESTARTSYS;
1696
1697 res = hotkey_mask_set(t);
01e88f25
HMH		 1698
1699#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
1700 hotkey_poll_setup(1);
1701#endif
1702
b2c985e7 1703 mutex_unlock(&hotkey_mutex);
a0416420
HMH		 1704
1705 return (res) ? res : count;
1706}
1707
1708static struct device_attribute dev_attr_hotkey_mask =
cc4c24e1 1709 __ATTR(hotkey_mask, S_IWUSR | S_IRUGO,
a0416420
HMH		 1710 hotkey_mask_show, hotkey_mask_store);
1711
1712/* sysfs hotkey bios_enabled ------------------------------------------- */
1713static ssize_t hotkey_bios_enabled_show(struct device *dev,
1714 struct device_attribute *attr,
1715 char *buf)
1716{
1717 return snprintf(buf, PAGE_SIZE, "%d\n", hotkey_orig_status);
1718}
1719
1720static struct device_attribute dev_attr_hotkey_bios_enabled =
cc4c24e1 1721 __ATTR(hotkey_bios_enabled, S_IRUGO, hotkey_bios_enabled_show, NULL);
a0416420
HMH		 1722
1723/* sysfs hotkey bios_mask ---------------------------------------------- */
1724static ssize_t hotkey_bios_mask_show(struct device *dev,
1725 struct device_attribute *attr,
1726 char *buf)
1727{
ae92bd17 1728 return snprintf(buf, PAGE_SIZE, "0x%08x\n", hotkey_orig_mask);
a0416420
HMH		 1729}
1730
1731static struct device_attribute dev_attr_hotkey_bios_mask =
cc4c24e1 1732 __ATTR(hotkey_bios_mask, S_IRUGO, hotkey_bios_mask_show, NULL);
a0416420 1733
9b010de5
HMH		 1734/* sysfs hotkey all_mask ----------------------------------------------- */
1735static ssize_t hotkey_all_mask_show(struct device *dev,
1736 struct device_attribute *attr,
1737 char *buf)
1738{
01e88f25
HMH		 1739 return snprintf(buf, PAGE_SIZE, "0x%08x\n",
1740 hotkey_all_mask | hotkey_source_mask);
9b010de5
HMH		 1741}
1742
1743static struct device_attribute dev_attr_hotkey_all_mask =
1744 __ATTR(hotkey_all_mask, S_IRUGO, hotkey_all_mask_show, NULL);
1745
1746/* sysfs hotkey recommended_mask --------------------------------------- */
1747static ssize_t hotkey_recommended_mask_show(struct device *dev,
1748 struct device_attribute *attr,
1749 char *buf)
1750{
1751 return snprintf(buf, PAGE_SIZE, "0x%08x\n",
01e88f25
HMH		 1752 (hotkey_all_mask | hotkey_source_mask)
1753 & ~hotkey_reserved_mask);
9b010de5
HMH		 1754}
1755
1756static struct device_attribute dev_attr_hotkey_recommended_mask =
1757 __ATTR(hotkey_recommended_mask, S_IRUGO,
1758 hotkey_recommended_mask_show, NULL);
1759
01e88f25
HMH		 1760#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
1761
1762/* sysfs hotkey hotkey_source_mask ------------------------------------- */
1763static ssize_t hotkey_source_mask_show(struct device *dev,
1764 struct device_attribute *attr,
1765 char *buf)
1766{
1767 return snprintf(buf, PAGE_SIZE, "0x%08x\n", hotkey_source_mask);
1768}
1769
1770static ssize_t hotkey_source_mask_store(struct device *dev,
1771 struct device_attribute *attr,
1772 const char *buf, size_t count)
1773{
1774 unsigned long t;
1775
1776 if (parse_strtoul(buf, 0xffffffffUL, &t) ||
1777 ((t & ~TPACPI_HKEY_NVRAM_KNOWN_MASK) != 0))
1778 return -EINVAL;
1779
1780 if (mutex_lock_interruptible(&hotkey_mutex))
1781 return -ERESTARTSYS;
1782
1783 HOTKEY_CONFIG_CRITICAL_START
1784 hotkey_source_mask = t;
1785 HOTKEY_CONFIG_CRITICAL_END
1786
1787 hotkey_poll_setup(1);
1788
1789 mutex_unlock(&hotkey_mutex);
1790
1791 return count;
1792}
1793
1794static struct device_attribute dev_attr_hotkey_source_mask =
1795 __ATTR(hotkey_source_mask, S_IWUSR | S_IRUGO,
1796 hotkey_source_mask_show, hotkey_source_mask_store);
1797
1798/* sysfs hotkey hotkey_poll_freq --------------------------------------- */
1799static ssize_t hotkey_poll_freq_show(struct device *dev,
1800 struct device_attribute *attr,
1801 char *buf)
1802{
1803 return snprintf(buf, PAGE_SIZE, "%d\n", hotkey_poll_freq);
1804}
1805
1806static ssize_t hotkey_poll_freq_store(struct device *dev,
1807 struct device_attribute *attr,
1808 const char *buf, size_t count)
1809{
1810 unsigned long t;
1811
1812 if (parse_strtoul(buf, 25, &t))
1813 return -EINVAL;
1814
1815 if (mutex_lock_interruptible(&hotkey_mutex))
1816 return -ERESTARTSYS;
1817
1818 hotkey_poll_freq = t;
1819
1820 hotkey_poll_setup(1);
1821 mutex_unlock(&hotkey_mutex);
1822
1823 return count;
1824}
1825
1826static struct device_attribute dev_attr_hotkey_poll_freq =
1827 __ATTR(hotkey_poll_freq, S_IWUSR | S_IRUGO,
1828 hotkey_poll_freq_show, hotkey_poll_freq_store);
1829
1830#endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
1831
50ebec09 1832/* sysfs hotkey radio_sw (pollable) ------------------------------------ */
74941a69
HMH		 1833static ssize_t hotkey_radio_sw_show(struct device *dev,
1834 struct device_attribute *attr,
1835 char *buf)
1836{
1837 int res, s;
1838 res = hotkey_get_wlsw(&s);
1839 if (res < 0)
1840 return res;
1841
1842 return snprintf(buf, PAGE_SIZE, "%d\n", !!s);
1843}
1844
1845static struct device_attribute dev_attr_hotkey_radio_sw =
1846 __ATTR(hotkey_radio_sw, S_IRUGO, hotkey_radio_sw_show, NULL);
1847
50ebec09
HMH		 1848static void hotkey_radio_sw_notify_change(void)
1849{
1850 if (tp_features.hotkey_wlsw)
1851 sysfs_notify(&tpacpi_pdev->dev.kobj, NULL,
1852 "hotkey_radio_sw");
1853}
1854
6c231bd5
HMH		 1855/* sysfs hotkey tablet mode (pollable) --------------------------------- */
1856static ssize_t hotkey_tablet_mode_show(struct device *dev,
1857 struct device_attribute *attr,
1858 char *buf)
1859{
1860 int res, s;
1861 res = hotkey_get_tablet_mode(&s);
1862 if (res < 0)
1863 return res;
1864
1865 return snprintf(buf, PAGE_SIZE, "%d\n", !!s);
1866}
1867
1868static struct device_attribute dev_attr_hotkey_tablet_mode =
1869 __ATTR(hotkey_tablet_mode, S_IRUGO, hotkey_tablet_mode_show, NULL);
1870
1871static void hotkey_tablet_mode_notify_change(void)
1872{
1873 if (tp_features.hotkey_tablet)
1874 sysfs_notify(&tpacpi_pdev->dev.kobj, NULL,
1875 "hotkey_tablet_mode");
1876}
1877
ff80f137
HMH		 1878/* sysfs hotkey report_mode -------------------------------------------- */
1879static ssize_t hotkey_report_mode_show(struct device *dev,
1880 struct device_attribute *attr,
1881 char *buf)
1882{
1883 return snprintf(buf, PAGE_SIZE, "%d\n",
1884 (hotkey_report_mode != 0) ? hotkey_report_mode : 1);
1885}
1886
1887static struct device_attribute dev_attr_hotkey_report_mode =
1888 __ATTR(hotkey_report_mode, S_IRUGO, hotkey_report_mode_show, NULL);
1889
50ebec09 1890/* sysfs wakeup reason (pollable) -------------------------------------- */
a713b4d7
HMH		 1891static ssize_t hotkey_wakeup_reason_show(struct device *dev,
1892 struct device_attribute *attr,
1893 char *buf)
1894{
1895 return snprintf(buf, PAGE_SIZE, "%d\n", hotkey_wakeup_reason);
1896}
1897
1898static struct device_attribute dev_attr_hotkey_wakeup_reason =
1899 __ATTR(wakeup_reason, S_IRUGO, hotkey_wakeup_reason_show, NULL);
1900
1d5a2b54 1901static void hotkey_wakeup_reason_notify_change(void)
50ebec09
HMH		 1902{
1903 if (tp_features.hotkey_mask)
1904 sysfs_notify(&tpacpi_pdev->dev.kobj, NULL,
1905 "wakeup_reason");
1906}
1907
1908/* sysfs wakeup hotunplug_complete (pollable) -------------------------- */
a713b4d7
HMH		 1909static ssize_t hotkey_wakeup_hotunplug_complete_show(struct device *dev,
1910 struct device_attribute *attr,
1911 char *buf)
1912{
1913 return snprintf(buf, PAGE_SIZE, "%d\n", hotkey_autosleep_ack);
1914}
1915
1916static struct device_attribute dev_attr_hotkey_wakeup_hotunplug_complete =
1917 __ATTR(wakeup_hotunplug_complete, S_IRUGO,
1918 hotkey_wakeup_hotunplug_complete_show, NULL);
1919
1d5a2b54 1920static void hotkey_wakeup_hotunplug_complete_notify_change(void)
50ebec09
HMH		 1921{
1922 if (tp_features.hotkey_mask)
1923 sysfs_notify(&tpacpi_pdev->dev.kobj, NULL,
1924 "wakeup_hotunplug_complete");
1925}
1926
a0416420
HMH		 1927/* --------------------------------------------------------------------- */
1928
ff80f137
HMH		 1929static struct attribute *hotkey_attributes[] __initdata = {
1930 &dev_attr_hotkey_enable.attr,
01e88f25 1931 &dev_attr_hotkey_bios_enabled.attr,
ff80f137 1932 &dev_attr_hotkey_report_mode.attr,
01e88f25
HMH		 1933#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
1934 &dev_attr_hotkey_mask.attr,
1935 &dev_attr_hotkey_all_mask.attr,
1936 &dev_attr_hotkey_recommended_mask.attr,
1937 &dev_attr_hotkey_source_mask.attr,
1938 &dev_attr_hotkey_poll_freq.attr,
1939#endif
ff80f137
HMH		 1940};
1941
1942static struct attribute *hotkey_mask_attributes[] __initdata = {
a0416420 1943 &dev_attr_hotkey_bios_mask.attr,
01e88f25
HMH		 1944#ifndef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
1945 &dev_attr_hotkey_mask.attr,
9b010de5
HMH		 1946 &dev_attr_hotkey_all_mask.attr,
1947 &dev_attr_hotkey_recommended_mask.attr,
01e88f25 1948#endif
a713b4d7
HMH		 1949 &dev_attr_hotkey_wakeup_reason.attr,
1950 &dev_attr_hotkey_wakeup_hotunplug_complete.attr,
a0416420
HMH		 1951};
1952
0e74dc26
HMH		 1953static void bluetooth_update_rfk(void);
1954static void wan_update_rfk(void);
733e27c1
HMH		 1955static void tpacpi_send_radiosw_update(void)
1956{
1957 int wlsw;
1958
0e74dc26
HMH		 1959 /* Sync these BEFORE sending any rfkill events */
1960 if (tp_features.bluetooth)
1961 bluetooth_update_rfk();
1962 if (tp_features.wan)
1963 wan_update_rfk();
1964
733e27c1
HMH		 1965 if (tp_features.hotkey_wlsw && !hotkey_get_wlsw(&wlsw)) {
1966 mutex_lock(&tpacpi_inputdev_send_mutex);
1967
1968 input_report_switch(tpacpi_inputdev,
1969 SW_RFKILL_ALL, !!wlsw);
1970 input_sync(tpacpi_inputdev);
1971
1972 mutex_unlock(&tpacpi_inputdev_send_mutex);
1973 }
1974 hotkey_radio_sw_notify_change();
1975}
1976
9c0a76e1
HMH		 1977static void hotkey_exit(void)
1978{
1979#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
1980 hotkey_poll_stop_sync();
1981#endif
1982
1983 if (hotkey_dev_attributes)
1984 delete_attr_set(hotkey_dev_attributes, &tpacpi_pdev->dev.kobj);
1985
1986 kfree(hotkey_keycode_map);
1987
1988 if (tp_features.hotkey) {
1989 dbg_printk(TPACPI_DBG_EXIT,
1990 "restoring original hot key mask\n");
1991 /* no short-circuit boolean operator below! */
1992 if ((hotkey_mask_set(hotkey_orig_mask) |
1993 hotkey_status_set(hotkey_orig_status)) != 0)
1994 printk(TPACPI_ERR
1995 "failed to restore hot key mask "
1996 "to BIOS defaults\n");
1997 }
1998}
1999
a5763f22 2000static int __init hotkey_init(struct ibm_init_struct *iibm)
56b6aeb0 2001{
0f089147
HMH		 2002 /* Requirements for changing the default keymaps:
2003 *
2004 * 1. Many of the keys are mapped to KEY_RESERVED for very
2005 * good reasons. Do not change them unless you have deep
2006 * knowledge on the IBM and Lenovo ThinkPad firmware for
2007 * the various ThinkPad models. The driver behaves
2008 * differently for KEY_RESERVED: such keys have their
2009 * hot key mask *unset* in mask_recommended, and also
2010 * in the initial hot key mask programmed into the
2011 * firmware at driver load time, which means the firm-
2012 * ware may react very differently if you change them to
2013 * something else;
2014 *
2015 * 2. You must be subscribed to the linux-thinkpad and
2016 * ibm-acpi-devel mailing lists, and you should read the
2017 * list archives since 2007 if you want to change the
2018 * keymaps. This requirement exists so that you will
2019 * know the past history of problems with the thinkpad-
2020 * acpi driver keymaps, and also that you will be
2021 * listening to any bug reports;
2022 *
2023 * 3. Do not send thinkpad-acpi specific patches directly to
2024 * for merging, *ever*. Send them to the linux-acpi
2025 * mailinglist for comments. Merging is to be done only
2026 * through acpi-test and the ACPI maintainer.
2027 *
2028 * If the above is too much to ask, don't change the keymap.
2029 * Ask the thinkpad-acpi maintainer to do it, instead.
2030 */
edf0e0e5
HMH		 2031 static u16 ibm_keycode_map[] __initdata = {
2032 /* Scan Codes 0x00 to 0x0B: ACPI HKEY FN+F1..F12 */
2033 KEY_FN_F1, KEY_FN_F2, KEY_COFFEE, KEY_SLEEP,
2034 KEY_WLAN, KEY_FN_F6, KEY_SWITCHVIDEOMODE, KEY_FN_F8,
2035 KEY_FN_F9, KEY_FN_F10, KEY_FN_F11, KEY_SUSPEND,
0f089147
HMH		 2036
2037 /* Scan codes 0x0C to 0x1F: Other ACPI HKEY hot keys */
edf0e0e5
HMH		 2038 KEY_UNKNOWN, /* 0x0C: FN+BACKSPACE */
2039 KEY_UNKNOWN, /* 0x0D: FN+INSERT */
2040 KEY_UNKNOWN, /* 0x0E: FN+DELETE */
0f089147
HMH		 2041
2042 /* brightness: firmware always reacts to them, unless
2043 * X.org did some tricks in the radeon BIOS scratch
2044 * registers of *some* models */
e927c08d 2045 KEY_RESERVED, /* 0x0F: FN+HOME (brightness up) */
e927c08d 2046 KEY_RESERVED, /* 0x10: FN+END (brightness down) */
0f089147
HMH		 2047
2048 /* Thinklight: firmware always react to it */
edf0e0e5 2049 KEY_RESERVED, /* 0x11: FN+PGUP (thinklight toggle) */
0f089147 2050
edf0e0e5
HMH		 2051 KEY_UNKNOWN, /* 0x12: FN+PGDOWN */
2052 KEY_ZOOM, /* 0x13: FN+SPACE (zoom) */
0f089147
HMH		 2053
2054 /* Volume: firmware always react to it and reprograms
2055 * the built-in *extra* mixer. Never map it to control
2056 * another mixer by default. */
e927c08d
HMH		 2057 KEY_RESERVED, /* 0x14: VOLUME UP */
2058 KEY_RESERVED, /* 0x15: VOLUME DOWN */
2059 KEY_RESERVED, /* 0x16: MUTE */
0f089147 2060
edf0e0e5 2061 KEY_VENDOR, /* 0x17: Thinkpad/AccessIBM/Lenovo */
0f089147 2062
edf0e0e5
HMH		 2063 /* (assignments unknown, please report if found) */
2064 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN,
2065 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN,
2066 };
2067 static u16 lenovo_keycode_map[] __initdata = {
2068 /* Scan Codes 0x00 to 0x0B: ACPI HKEY FN+F1..F12 */
2069 KEY_FN_F1, KEY_COFFEE, KEY_BATTERY, KEY_SLEEP,
2070 KEY_WLAN, KEY_FN_F6, KEY_SWITCHVIDEOMODE, KEY_FN_F8,
2071 KEY_FN_F9, KEY_FN_F10, KEY_FN_F11, KEY_SUSPEND,
0f089147
HMH		 2072
2073 /* Scan codes 0x0C to 0x1F: Other ACPI HKEY hot keys */
edf0e0e5
HMH		 2074 KEY_UNKNOWN, /* 0x0C: FN+BACKSPACE */
2075 KEY_UNKNOWN, /* 0x0D: FN+INSERT */
2076 KEY_UNKNOWN, /* 0x0E: FN+DELETE */
0f089147 2077
b5972796
HMH		 2078 /* These either have to go through ACPI video, or
2079 * act like in the IBM ThinkPads, so don't ever
2080 * enable them by default */
56a185b4 2081 KEY_RESERVED, /* 0x0F: FN+HOME (brightness up) */
56a185b4 2082 KEY_RESERVED, /* 0x10: FN+END (brightness down) */
0f089147 2083
edf0e0e5 2084 KEY_RESERVED, /* 0x11: FN+PGUP (thinklight toggle) */
0f089147 2085
edf0e0e5
HMH		 2086 KEY_UNKNOWN, /* 0x12: FN+PGDOWN */
2087 KEY_ZOOM, /* 0x13: FN+SPACE (zoom) */
0f089147
HMH		 2088
2089 /* Volume: z60/z61, T60 (BIOS version?): firmware always
2090 * react to it and reprograms the built-in *extra* mixer.
2091 * Never map it to control another mixer by default.
2092 *
2093 * T60?, T61, R60?, R61: firmware and EC tries to send
2094 * these over the regular keyboard, so these are no-ops,
2095 * but there are still weird bugs re. MUTE, so do not
2096 * change unless you get test reports from all Lenovo
2097 * models. May cause the BIOS to interfere with the
2098 * HDA mixer.
2099 */
e927c08d
HMH		 2100 KEY_RESERVED, /* 0x14: VOLUME UP */
2101 KEY_RESERVED, /* 0x15: VOLUME DOWN */
2102 KEY_RESERVED, /* 0x16: MUTE */
0f089147 2103
edf0e0e5 2104 KEY_VENDOR, /* 0x17: Thinkpad/AccessIBM/Lenovo */
0f089147 2105
edf0e0e5
HMH		 2106 /* (assignments unknown, please report if found) */
2107 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN,
2108 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN,
2109 };
2110
2111#define TPACPI_HOTKEY_MAP_LEN ARRAY_SIZE(ibm_keycode_map)
2112#define TPACPI_HOTKEY_MAP_SIZE sizeof(ibm_keycode_map)
2113#define TPACPI_HOTKEY_MAP_TYPESIZE sizeof(ibm_keycode_map[0])
2114
6a38abbf 2115 int res, i;
74941a69 2116 int status;
1b6521dc 2117 int hkeyv;
b86c4722 2118
fe08bc4b
HMH		 2119 vdbg_printk(TPACPI_DBG_INIT, "initializing hotkey subdriver\n");
2120
6a38abbf 2121 BUG_ON(!tpacpi_inputdev);
01e88f25
HMH		 2122 BUG_ON(tpacpi_inputdev->open != NULL ||
2123 tpacpi_inputdev->close != NULL);
6a38abbf 2124
e0c7dfe7 2125 TPACPI_ACPIHANDLE_INIT(hkey);
40ca9fdf 2126 mutex_init(&hotkey_mutex);
5fba344c 2127
01e88f25
HMH		 2128#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
2129 mutex_init(&hotkey_thread_mutex);
2130 mutex_init(&hotkey_thread_data_mutex);
2131#endif
2132
56b6aeb0 2133 /* hotkey not supported on 570 */
d8fd94d9 2134 tp_features.hotkey = hkey_handle != NULL;
56b6aeb0 2135
fe08bc4b 2136 vdbg_printk(TPACPI_DBG_INIT, "hotkeys are %s\n",
d8fd94d9 2137 str_supported(tp_features.hotkey));
fe08bc4b 2138
9c0a76e1
HMH		 2139 if (!tp_features.hotkey)
2140 return 1;
a0416420 2141
9c0a76e1
HMH		 2142 hotkey_dev_attributes = create_attr_set(13, NULL);
2143 if (!hotkey_dev_attributes)
2144 return -ENOMEM;
2145 res = add_many_to_attr_set(hotkey_dev_attributes,
2146 hotkey_attributes,
2147 ARRAY_SIZE(hotkey_attributes));
2148 if (res)
2149 goto err_exit;
2150
2151 /* mask not supported on 570, 600e/x, 770e, 770x, A21e, A2xm/p,
2152 A30, R30, R31, T20-22, X20-21, X22-24. Detected by checking
2153 for HKEY interface version 0x100 */
2154 if (acpi_evalf(hkey_handle, &hkeyv, "MHKV", "qd")) {
2155 if ((hkeyv >> 8) != 1) {
2156 printk(TPACPI_ERR "unknown version of the "
2157 "HKEY interface: 0x%x\n", hkeyv);
2158 printk(TPACPI_ERR "please report this to %s\n",
2159 TPACPI_MAIL);
2160 } else {
2161 /*
2162 * MHKV 0x100 in A31, R40, R40e,
2163 * T4x, X31, and later
2164 */
2165 tp_features.hotkey_mask = 1;
1b6521dc 2166 }
9c0a76e1 2167 }
56b6aeb0 2168
9c0a76e1
HMH		 2169 vdbg_printk(TPACPI_DBG_INIT, "hotkey masks are %s\n",
2170 str_supported(tp_features.hotkey_mask));
fe08bc4b 2171
9c0a76e1
HMH		 2172 if (tp_features.hotkey_mask) {
2173 if (!acpi_evalf(hkey_handle, &hotkey_all_mask,
2174 "MHKA", "qd")) {
2175 printk(TPACPI_ERR
2176 "missing MHKA handler, "
2177 "please report this to %s\n",
2178 TPACPI_MAIL);
2179 /* FN+F12, FN+F4, FN+F3 */
2180 hotkey_all_mask = 0x080cU;
9b010de5 2181 }
9c0a76e1 2182 }
9b010de5 2183
9c0a76e1
HMH		 2184 /* hotkey_source_mask *must* be zero for
2185 * the first hotkey_mask_get */
2186 res = hotkey_status_get(&hotkey_orig_status);
2187 if (res)
2188 goto err_exit;
2189
2190 if (tp_features.hotkey_mask) {
2191 res = hotkey_mask_get();
2192 if (res)
2193 goto err_exit;
2194
2195 hotkey_orig_mask = hotkey_mask;
2196 res = add_many_to_attr_set(
2197 hotkey_dev_attributes,
2198 hotkey_mask_attributes,
2199 ARRAY_SIZE(hotkey_mask_attributes));
2200 if (res)
2201 goto err_exit;
2202 }
74941a69 2203
01e88f25 2204#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
9c0a76e1
HMH		 2205 if (tp_features.hotkey_mask) {
2206 hotkey_source_mask = TPACPI_HKEY_NVRAM_GOOD_MASK
2207 & ~hotkey_all_mask;
2208 } else {
2209 hotkey_source_mask = TPACPI_HKEY_NVRAM_GOOD_MASK;
2210 }
01e88f25 2211
9c0a76e1
HMH		 2212 vdbg_printk(TPACPI_DBG_INIT,
2213 "hotkey source mask 0x%08x, polling freq %d\n",
2214 hotkey_source_mask, hotkey_poll_freq);
01e88f25
HMH		 2215#endif
2216
9c0a76e1
HMH		 2217 /* Not all thinkpads have a hardware radio switch */
2218 if (acpi_evalf(hkey_handle, &status, "WLSW", "qd")) {
2219 tp_features.hotkey_wlsw = 1;
2220 printk(TPACPI_INFO
2221 "radio switch found; radios are %s\n",
2222 enabled(status, 0));
3a872080
HMH		 2223 }
2224 if (tp_features.hotkey_wlsw)
9c0a76e1
HMH		 2225 res = add_to_attr_set(hotkey_dev_attributes,
2226 &dev_attr_hotkey_radio_sw.attr);
74941a69 2227
9c0a76e1
HMH		 2228 /* For X41t, X60t, X61t Tablets... */
2229 if (!res && acpi_evalf(hkey_handle, &status, "MHKG", "qd")) {
2230 tp_features.hotkey_tablet = 1;
2231 printk(TPACPI_INFO
2232 "possible tablet mode switch found; "
2233 "ThinkPad in %s mode\n",
2234 (status & TP_HOTKEY_TABLET_MASK)?
2235 "tablet" : "laptop");
2236 res = add_to_attr_set(hotkey_dev_attributes,
2237 &dev_attr_hotkey_tablet_mode.attr);
2238 }
6c231bd5 2239
9c0a76e1
HMH		 2240 if (!res)
2241 res = register_attr_set_with_sysfs(
2242 hotkey_dev_attributes,
2243 &tpacpi_pdev->dev.kobj);
2244 if (res)
2245 goto err_exit;
6a38abbf 2246
9c0a76e1 2247 /* Set up key map */
edf0e0e5 2248
9c0a76e1
HMH		 2249 hotkey_keycode_map = kmalloc(TPACPI_HOTKEY_MAP_SIZE,
2250 GFP_KERNEL);
2251 if (!hotkey_keycode_map) {
2252 printk(TPACPI_ERR
2253 "failed to allocate memory for key map\n");
2254 res = -ENOMEM;
2255 goto err_exit;
2256 }
edf0e0e5 2257
9c0a76e1
HMH		 2258 if (thinkpad_id.vendor == PCI_VENDOR_ID_LENOVO) {
2259 dbg_printk(TPACPI_DBG_INIT,
2260 "using Lenovo default hot key map\n");
2261 memcpy(hotkey_keycode_map, &lenovo_keycode_map,
2262 TPACPI_HOTKEY_MAP_SIZE);
2263 } else {
2264 dbg_printk(TPACPI_DBG_INIT,
2265 "using IBM default hot key map\n");
2266 memcpy(hotkey_keycode_map, &ibm_keycode_map,
2267 TPACPI_HOTKEY_MAP_SIZE);
2268 }
edf0e0e5 2269
9c0a76e1
HMH		 2270 set_bit(EV_KEY, tpacpi_inputdev->evbit);
2271 set_bit(EV_MSC, tpacpi_inputdev->evbit);
2272 set_bit(MSC_SCAN, tpacpi_inputdev->mscbit);
2273 tpacpi_inputdev->keycodesize = TPACPI_HOTKEY_MAP_TYPESIZE;
2274 tpacpi_inputdev->keycodemax = TPACPI_HOTKEY_MAP_LEN;
2275 tpacpi_inputdev->keycode = hotkey_keycode_map;
2276 for (i = 0; i < TPACPI_HOTKEY_MAP_LEN; i++) {
2277 if (hotkey_keycode_map[i] != KEY_RESERVED) {
2278 set_bit(hotkey_keycode_map[i],
2279 tpacpi_inputdev->keybit);
2280 } else {
2281 if (i < sizeof(hotkey_reserved_mask)*8)
2282 hotkey_reserved_mask |= 1 << i;
6a38abbf 2283 }
9c0a76e1 2284 }
6a38abbf 2285
9c0a76e1
HMH		 2286 if (tp_features.hotkey_wlsw) {
2287 set_bit(EV_SW, tpacpi_inputdev->evbit);
2288 set_bit(SW_RFKILL_ALL, tpacpi_inputdev->swbit);
2289 }
2290 if (tp_features.hotkey_tablet) {
2291 set_bit(EV_SW, tpacpi_inputdev->evbit);
2292 set_bit(SW_TABLET_MODE, tpacpi_inputdev->swbit);
2293 }
5c29d58f 2294
9c0a76e1
HMH		 2295 /* Do not issue duplicate brightness change events to
2296 * userspace */
2297 if (!tp_features.bright_acpimode)
2298 /* update bright_acpimode... */
2299 tpacpi_check_std_acpi_brightness_support();
b5972796 2300
9c0a76e1
HMH		 2301 if (tp_features.bright_acpimode) {
2302 printk(TPACPI_INFO
2303 "This ThinkPad has standard ACPI backlight "
2304 "brightness control, supported by the ACPI "
2305 "video driver\n");
2306 printk(TPACPI_NOTICE
2307 "Disabling thinkpad-acpi brightness events "
2308 "by default...\n");
2309
2310 /* The hotkey_reserved_mask change below is not
2311 * necessary while the keys are at KEY_RESERVED in the
2312 * default map, but better safe than sorry, leave it
2313 * here as a marker of what we have to do, especially
2314 * when we finally become able to set this at runtime
2315 * on response to X.org requests */
2316 hotkey_reserved_mask |=
2317 (1 << TP_ACPI_HOTKEYSCAN_FNHOME)
2318 | (1 << TP_ACPI_HOTKEYSCAN_FNEND);
2319 }
ff80f137 2320
9c0a76e1
HMH		 2321 dbg_printk(TPACPI_DBG_INIT, "enabling hot key handling\n");
2322 res = hotkey_status_set(1);
2323 if (res) {
2324 hotkey_exit();
2325 return res;
2326 }
2327 res = hotkey_mask_set(((hotkey_all_mask | hotkey_source_mask)
2328 & ~hotkey_reserved_mask)
2329 | hotkey_orig_mask);
2330 if (res < 0 && res != -ENXIO) {
2331 hotkey_exit();
2332 return res;
2333 }
01e88f25 2334
9c0a76e1
HMH		 2335 dbg_printk(TPACPI_DBG_INIT,
2336 "legacy hot key reporting over procfs %s\n",
2337 (hotkey_report_mode < 2) ?
2338 "enabled" : "disabled");
01e88f25 2339
9c0a76e1
HMH		 2340 tpacpi_inputdev->open = &hotkey_inputdev_open;
2341 tpacpi_inputdev->close = &hotkey_inputdev_close;
56b6aeb0 2342
9c0a76e1 2343 hotkey_poll_setup_safe(1);
733e27c1 2344 tpacpi_send_radiosw_update();
9c0a76e1 2345 tpacpi_input_send_tabletsw();
56b6aeb0 2346
9c0a76e1 2347 return 0;
01e88f25 2348
9c0a76e1
HMH		 2349err_exit:
2350 delete_attr_set(hotkey_dev_attributes, &tpacpi_pdev->dev.kobj);
2351 hotkey_dev_attributes = NULL;
a0416420 2352
9c0a76e1 2353 return (res < 0)? res : 1;
56b6aeb0
HMH		 2354}
2355
2356static void hotkey_notify(struct ibm_struct *ibm, u32 event)
2357{
6a38abbf 2358 u32 hkey;
b7c8c200 2359 unsigned int scancode;
3eea123d 2360 int send_acpi_ev;
3e5ce914 2361 int ignore_acpi_ev;
3b64b51d 2362 int unk_ev;
3eea123d
HMH		 2363
2364 if (event != 0x80) {
35ff8b9f
HMH		 2365 printk(TPACPI_ERR
2366 "unknown HKEY notification event %d\n", event);
3eea123d 2367 /* forward it to userspace, maybe it knows how to handle it */
35ff8b9f
HMH		 2368 acpi_bus_generate_netlink_event(
2369 ibm->acpi->device->pnp.device_class,
2370 ibm->acpi->device->dev.bus_id,
2371 event, 0);
3eea123d
HMH		 2372 return;
2373 }
2374
2375 while (1) {
2376 if (!acpi_evalf(hkey_handle, &hkey, "MHKP", "d")) {
e0c7dfe7 2377 printk(TPACPI_ERR "failed to retrieve HKEY event\n");
3eea123d
HMH		 2378 return;
2379 }
2380
2381 if (hkey == 0) {
2382 /* queue empty */
2383 return;
2384 }
2385
3b64b51d 2386 send_acpi_ev = 1;
3e5ce914 2387 ignore_acpi_ev = 0;
3b64b51d 2388 unk_ev = 0;
56b6aeb0 2389
ff80f137
HMH		 2390 switch (hkey >> 12) {
2391 case 1:
2392 /* 0x1000-0x1FFF: key presses */
2393 scancode = hkey & 0xfff;
2394 if (scancode > 0 && scancode < 0x21) {
2395 scancode--;
01e88f25
HMH		 2396 if (!(hotkey_source_mask & (1 << scancode))) {
2397 tpacpi_input_send_key(scancode);
3b64b51d 2398 send_acpi_ev = 0;
01e88f25
HMH		 2399 } else {
2400 ignore_acpi_ev = 1;
2401 }
ff80f137 2402 } else {
3b64b51d 2403 unk_ev = 1;
ff80f137
HMH		 2404 }
2405 break;
a713b4d7
HMH		 2406 case 2:
2407 /* Wakeup reason */
2408 switch (hkey) {
2409 case 0x2304: /* suspend, undock */
2410 case 0x2404: /* hibernation, undock */
2411 hotkey_wakeup_reason = TP_ACPI_WAKEUP_UNDOCK;
2412 ignore_acpi_ev = 1;
2413 break;
2414 case 0x2305: /* suspend, bay eject */
2415 case 0x2405: /* hibernation, bay eject */
2416 hotkey_wakeup_reason = TP_ACPI_WAKEUP_BAYEJ;
2417 ignore_acpi_ev = 1;
2418 break;
2419 default:
2420 unk_ev = 1;
2421 }
2422 if (hotkey_wakeup_reason != TP_ACPI_WAKEUP_NONE) {
2423 printk(TPACPI_INFO
2424 "woke up due to a hot-unplug "
2425 "request...\n");
50ebec09 2426 hotkey_wakeup_reason_notify_change();
a713b4d7
HMH		 2427 }
2428 break;
2429 case 3:
2430 /* bay-related wakeups */
2431 if (hkey == 0x3003) {
2432 hotkey_autosleep_ack = 1;
2433 printk(TPACPI_INFO
2434 "bay ejected\n");
50ebec09 2435 hotkey_wakeup_hotunplug_complete_notify_change();
a713b4d7
HMH		 2436 } else {
2437 unk_ev = 1;
2438 }
2439 break;
2440 case 4:
2441 /* dock-related wakeups */
2442 if (hkey == 0x4003) {
2443 hotkey_autosleep_ack = 1;
2444 printk(TPACPI_INFO
2445 "undocked\n");
50ebec09 2446 hotkey_wakeup_hotunplug_complete_notify_change();
a713b4d7
HMH		 2447 } else {
2448 unk_ev = 1;
2449 }
2450 break;
ff80f137 2451 case 5:
d1edb2b5 2452 /* 0x5000-0x5FFF: human interface helpers */
3b64b51d 2453 switch (hkey) {
d1edb2b5 2454 case 0x5010: /* Lenovo new BIOS: brightness changed */
d1edb2b5
HMH		 2455 case 0x500b: /* X61t: tablet pen inserted into bay */
2456 case 0x500c: /* X61t: tablet pen removed from bay */
3b64b51d 2457 break;
6c231bd5
HMH		 2458 case 0x5009: /* X41t-X61t: swivel up (tablet mode) */
2459 case 0x500a: /* X41t-X61t: swivel down (normal mode) */
2460 tpacpi_input_send_tabletsw();
2461 hotkey_tablet_mode_notify_change();
b3ec6f91
HMH		 2462 send_acpi_ev = 0;
2463 break;
3b64b51d
HMH		 2464 case 0x5001:
2465 case 0x5002:
2466 /* LID switch events. Do not propagate */
3e5ce914 2467 ignore_acpi_ev = 1;
3b64b51d
HMH		 2468 break;
2469 default:
2470 unk_ev = 1;
ff80f137
HMH		 2471 }
2472 break;
2473 case 7:
2474 /* 0x7000-0x7FFF: misc */
2475 if (tp_features.hotkey_wlsw && hkey == 0x7000) {
733e27c1 2476 tpacpi_send_radiosw_update();
3b64b51d 2477 send_acpi_ev = 0;
6a38abbf 2478 break;
6a38abbf 2479 }
ff80f137
HMH		 2480 /* fallthrough to default */
2481 default:
3b64b51d
HMH		 2482 unk_ev = 1;
2483 }
2484 if (unk_ev) {
35ff8b9f
HMH		 2485 printk(TPACPI_NOTICE
2486 "unhandled HKEY event 0x%04x\n", hkey);
6a38abbf 2487 }
ff80f137 2488
3eea123d 2489 /* Legacy events */
35ff8b9f
HMH		 2490 if (!ignore_acpi_ev &&
2491 (send_acpi_ev || hotkey_report_mode < 2)) {
2492 acpi_bus_generate_proc_event(ibm->acpi->device,
2493 event, hkey);
3e5ce914 2494 }
ff80f137 2495
3eea123d 2496 /* netlink events */
3e5ce914 2497 if (!ignore_acpi_ev && send_acpi_ev) {
35ff8b9f
HMH		 2498 acpi_bus_generate_netlink_event(
2499 ibm->acpi->device->pnp.device_class,
2500 ibm->acpi->device->dev.bus_id,
2501 event, hkey);
3eea123d 2502 }
56b6aeb0
HMH		 2503 }
2504}
2505
a713b4d7
HMH		 2506static void hotkey_suspend(pm_message_t state)
2507{
2508 /* Do these on suspend, we get the events on early resume! */
2509 hotkey_wakeup_reason = TP_ACPI_WAKEUP_NONE;
2510 hotkey_autosleep_ack = 0;
2511}
2512
5c29d58f
HMH		 2513static void hotkey_resume(void)
2514{
b2c985e7 2515 if (hotkey_mask_get())
35ff8b9f
HMH		 2516 printk(TPACPI_ERR
2517 "error while trying to read hot key mask "
2518 "from firmware\n");
733e27c1 2519 tpacpi_send_radiosw_update();
6c231bd5 2520 hotkey_tablet_mode_notify_change();
50ebec09
HMH		 2521 hotkey_wakeup_reason_notify_change();
2522 hotkey_wakeup_hotunplug_complete_notify_change();
01e88f25 2523 hotkey_poll_setup_safe(0);
5c29d58f
HMH		 2524}
2525
a0416420 2526/* procfs -------------------------------------------------------------- */
78f81cc4 2527static int hotkey_read(char *p)
1da177e4 2528{
ae92bd17 2529 int res, status;
1da177e4
LT		 2530 int len = 0;
2531
d8fd94d9 2532 if (!tp_features.hotkey) {
78f81cc4
BD		 2533 len += sprintf(p + len, "status:\t\tnot supported\n");
2534 return len;
2535 }
2536
fc589a3c
HMH		 2537 if (mutex_lock_interruptible(&hotkey_mutex))
2538 return -ERESTARTSYS;
b2c985e7
HMH		 2539 res = hotkey_status_get(&status);
2540 if (!res)
2541 res = hotkey_mask_get();
40ca9fdf 2542 mutex_unlock(&hotkey_mutex);
b86c4722
HMH		 2543 if (res)
2544 return res;
1da177e4
LT		 2545
2546 len += sprintf(p + len, "status:\t\t%s\n", enabled(status, 0));
d8fd94d9 2547 if (tp_features.hotkey_mask) {
b2c985e7 2548 len += sprintf(p + len, "mask:\t\t0x%08x\n", hotkey_mask);
1da177e4
LT		 2549 len += sprintf(p + len,
2550 "commands:\tenable, disable, reset, <mask>\n");
2551 } else {
2552 len += sprintf(p + len, "mask:\t\tnot supported\n");
2553 len += sprintf(p + len, "commands:\tenable, disable, reset\n");
2554 }
2555
2556 return len;
2557}
2558
78f81cc4 2559static int hotkey_write(char *buf)
1da177e4 2560{
ae92bd17
HMH		 2561 int res, status;
2562 u32 mask;
1da177e4 2563 char *cmd;
1da177e4 2564
d8fd94d9 2565 if (!tp_features.hotkey)
1da177e4
LT		 2566 return -ENODEV;
2567
fc589a3c
HMH		 2568 if (mutex_lock_interruptible(&hotkey_mutex))
2569 return -ERESTARTSYS;
40ca9fdf 2570
b2c985e7
HMH		 2571 status = -1;
2572 mask = hotkey_mask;
78f81cc4 2573
40ca9fdf 2574 res = 0;
1da177e4
LT		 2575 while ((cmd = next_cmd(&buf))) {
2576 if (strlencmp(cmd, "enable") == 0) {
2577 status = 1;
2578 } else if (strlencmp(cmd, "disable") == 0) {
2579 status = 0;
2580 } else if (strlencmp(cmd, "reset") == 0) {
78f81cc4
BD		 2581 status = hotkey_orig_status;
2582 mask = hotkey_orig_mask;
1da177e4
LT		 2583 } else if (sscanf(cmd, "0x%x", &mask) == 1) {
2584 /* mask set */
2585 } else if (sscanf(cmd, "%x", &mask) == 1) {
2586 /* mask set */
40ca9fdf
HMH		 2587 } else {
2588 res = -EINVAL;
2589 goto errexit;
2590 }
1da177e4 2591 }
b2c985e7
HMH		 2592 if (status != -1)
2593 res = hotkey_status_set(status);
1da177e4 2594
b2c985e7
HMH		 2595 if (!res && mask != hotkey_mask)
2596 res = hotkey_mask_set(mask);
1da177e4 2597
40ca9fdf
HMH		 2598errexit:
2599 mutex_unlock(&hotkey_mutex);
2600 return res;
78f81cc4 2601}
1da177e4 2602
1ba90e3a 2603static const struct acpi_device_id ibm_htk_device_ids[] = {
e0c7dfe7 2604 {TPACPI_ACPI_HKEY_HID, 0},
1ba90e3a
TR		 2605 {"", 0},
2606};
2607
8d376cd6 2608static struct tp_acpi_drv_struct ibm_hotkey_acpidriver = {
1ba90e3a 2609 .hid = ibm_htk_device_ids,
8d376cd6
HMH		 2610 .notify = hotkey_notify,
2611 .handle = &hkey_handle,
2612 .type = ACPI_DEVICE_NOTIFY,
2613};
2614
a5763f22
HMH		 2615static struct ibm_struct hotkey_driver_data = {
2616 .name = "hotkey",
a5763f22
HMH		 2617 .read = hotkey_read,
2618 .write = hotkey_write,
2619 .exit = hotkey_exit,
5c29d58f 2620 .resume = hotkey_resume,
a713b4d7 2621 .suspend = hotkey_suspend,
8d376cd6 2622 .acpi = &ibm_hotkey_acpidriver,
a5763f22
HMH		 2623};
2624
56b6aeb0
HMH		 2625/*************************************************************************
2626 * Bluetooth subdriver
2627 */
1da177e4 2628
f74a27d4
HMH		 2629enum {
2630 /* ACPI GBDC/SBDC bits */
2631 TP_ACPI_BLUETOOTH_HWPRESENT = 0x01, /* Bluetooth hw available */
2632 TP_ACPI_BLUETOOTH_RADIOSSW = 0x02, /* Bluetooth radio enabled */
2633 TP_ACPI_BLUETOOTH_UNK = 0x04, /* unknown function */
2634};
2635
0e74dc26
HMH		 2636static struct rfkill *tpacpi_bluetooth_rfkill;
2637
07431ec8
HMH		 2638static int bluetooth_get_radiosw(void)
2639{
2640 int status;
2641
2642 if (!tp_features.bluetooth)
2643 return -ENODEV;
2644
133ec3bd
HMH		 2645 /* WLSW overrides bluetooth in firmware/hardware, reflect that */
2646 if (tp_features.hotkey_wlsw && !hotkey_get_wlsw(&status) && !status)
0e74dc26 2647 return RFKILL_STATE_HARD_BLOCKED;
133ec3bd 2648
07431ec8
HMH		 2649 if (!acpi_evalf(hkey_handle, &status, "GBDC", "d"))
2650 return -EIO;
2651
0e74dc26
HMH		 2652 return ((status & TP_ACPI_BLUETOOTH_RADIOSSW) != 0) ?
2653 RFKILL_STATE_UNBLOCKED : RFKILL_STATE_SOFT_BLOCKED;
07431ec8
HMH		 2654}
2655
0e74dc26
HMH		 2656static void bluetooth_update_rfk(void)
2657{
2658 int status;
2659
2660 if (!tpacpi_bluetooth_rfkill)
2661 return;
2662
2663 status = bluetooth_get_radiosw();
2664 if (status < 0)
2665 return;
2666 rfkill_force_state(tpacpi_bluetooth_rfkill, status);
2667}
2668
2669static int bluetooth_set_radiosw(int radio_on, int update_rfk)
07431ec8
HMH		 2670{
2671 int status;
2672
2673 if (!tp_features.bluetooth)
2674 return -ENODEV;
2675
133ec3bd
HMH		 2676 /* WLSW overrides bluetooth in firmware/hardware, but there is no
2677 * reason to risk weird behaviour. */
2678 if (tp_features.hotkey_wlsw && !hotkey_get_wlsw(&status) && !status
2679 && radio_on)
2680 return -EPERM;
2681
07431ec8
HMH		 2682 if (!acpi_evalf(hkey_handle, &status, "GBDC", "d"))
2683 return -EIO;
2684 if (radio_on)
2685 status |= TP_ACPI_BLUETOOTH_RADIOSSW;
2686 else
2687 status &= ~TP_ACPI_BLUETOOTH_RADIOSSW;
2688 if (!acpi_evalf(hkey_handle, NULL, "SBDC", "vd", status))
2689 return -EIO;
2690
0e74dc26
HMH		 2691 if (update_rfk)
2692 bluetooth_update_rfk();
2693
07431ec8
HMH		 2694 return 0;
2695}
f74a27d4 2696
d3a6ade4
HMH		 2697/* sysfs bluetooth enable ---------------------------------------------- */
2698static ssize_t bluetooth_enable_show(struct device *dev,
2699 struct device_attribute *attr,
2700 char *buf)
2701{
2702 int status;
2703
2704 status = bluetooth_get_radiosw();
2705 if (status < 0)
2706 return status;
2707
0e74dc26
HMH		 2708 return snprintf(buf, PAGE_SIZE, "%d\n",
2709 (status == RFKILL_STATE_UNBLOCKED) ? 1 : 0);
d3a6ade4
HMH		 2710}
2711
2712static ssize_t bluetooth_enable_store(struct device *dev,
2713 struct device_attribute *attr,
2714 const char *buf, size_t count)
2715{
2716 unsigned long t;
2717 int res;
2718
2719 if (parse_strtoul(buf, 1, &t))
2720 return -EINVAL;
2721
0e74dc26 2722 res = bluetooth_set_radiosw(t, 1);
d3a6ade4
HMH		 2723
2724 return (res) ? res : count;
2725}
2726
2727static struct device_attribute dev_attr_bluetooth_enable =
cc4c24e1 2728 __ATTR(bluetooth_enable, S_IWUSR | S_IRUGO,
d3a6ade4
HMH		 2729 bluetooth_enable_show, bluetooth_enable_store);
2730
2731/* --------------------------------------------------------------------- */
2732
2733static struct attribute *bluetooth_attributes[] = {
2734 &dev_attr_bluetooth_enable.attr,
2735 NULL
2736};
2737
2738static const struct attribute_group bluetooth_attr_group = {
d3a6ade4
HMH		 2739 .attrs = bluetooth_attributes,
2740};
2741
0e74dc26
HMH		 2742static int tpacpi_bluetooth_rfk_get(void *data, enum rfkill_state *state)
2743{
2744 int bts = bluetooth_get_radiosw();
2745
2746 if (bts < 0)
2747 return bts;
2748
2749 *state = bts;
2750 return 0;
2751}
2752
2753static int tpacpi_bluetooth_rfk_set(void *data, enum rfkill_state state)
2754{
2755 return bluetooth_set_radiosw((state == RFKILL_STATE_UNBLOCKED), 0);
2756}
2757
07431ec8
HMH		 2758static void bluetooth_exit(void)
2759{
0e74dc26
HMH		 2760 if (tpacpi_bluetooth_rfkill)
2761 rfkill_unregister(tpacpi_bluetooth_rfkill);
2762
07431ec8
HMH		 2763 sysfs_remove_group(&tpacpi_pdev->dev.kobj,
2764 &bluetooth_attr_group);
2765}
2766
a5763f22 2767static int __init bluetooth_init(struct ibm_init_struct *iibm)
1da177e4 2768{
d3a6ade4 2769 int res;
d6fdd1e9
HMH		 2770 int status = 0;
2771
fe08bc4b
HMH		 2772 vdbg_printk(TPACPI_DBG_INIT, "initializing bluetooth subdriver\n");
2773
e0c7dfe7 2774 TPACPI_ACPIHANDLE_INIT(hkey);
5fba344c 2775
78f81cc4
BD		 2776 /* bluetooth not supported on 570, 600e/x, 770e, 770x, A21e, A2xm/p,
2777 G4x, R30, R31, R40e, R50e, T20-22, X20-21 */
d8fd94d9 2778 tp_features.bluetooth = hkey_handle &&
d6fdd1e9
HMH		 2779 acpi_evalf(hkey_handle, &status, "GBDC", "qd");
2780
2781 vdbg_printk(TPACPI_DBG_INIT, "bluetooth is %s, status 0x%02x\n",
2782 str_supported(tp_features.bluetooth),
2783 status);
2784
3a872080
HMH		 2785 if (tp_features.bluetooth &&
2786 !(status & TP_ACPI_BLUETOOTH_HWPRESENT)) {
2787 /* no bluetooth hardware present in system */
2788 tp_features.bluetooth = 0;
2789 dbg_printk(TPACPI_DBG_INIT,
2790 "bluetooth hardware not installed\n");
2791 }
2792
0e74dc26
HMH		 2793 if (!tp_features.bluetooth)
2794 return 1;
2795
2796 res = sysfs_create_group(&tpacpi_pdev->dev.kobj,
3a872080 2797 &bluetooth_attr_group);
0e74dc26
HMH		 2798 if (res)
2799 return res;
2800
2801 res = tpacpi_new_rfkill(TPACPI_RFK_BLUETOOTH_SW_ID,
2802 &tpacpi_bluetooth_rfkill,
2803 RFKILL_TYPE_BLUETOOTH,
2804 "tpacpi_bluetooth_sw",
2805 tpacpi_bluetooth_rfk_set,
2806 tpacpi_bluetooth_rfk_get);
2807 if (res) {
2808 bluetooth_exit();
2809 return res;
d6fdd1e9 2810 }
fe08bc4b 2811
0e74dc26 2812 return 0;
1da177e4
LT		 2813}
2814
d3a6ade4 2815/* procfs -------------------------------------------------------------- */
78f81cc4 2816static int bluetooth_read(char *p)
1da177e4
LT		 2817{
2818 int len = 0;
d6fdd1e9 2819 int status = bluetooth_get_radiosw();
1da177e4 2820
d8fd94d9 2821 if (!tp_features.bluetooth)
1da177e4 2822 len += sprintf(p + len, "status:\t\tnot supported\n");
1da177e4 2823 else {
d6fdd1e9 2824 len += sprintf(p + len, "status:\t\t%s\n",
0e74dc26
HMH		 2825 (status == RFKILL_STATE_UNBLOCKED) ?
2826 "enabled" : "disabled");
1da177e4
LT		 2827 len += sprintf(p + len, "commands:\tenable, disable\n");
2828 }
2829
2830 return len;
2831}
2832
78f81cc4 2833static int bluetooth_write(char *buf)
1da177e4 2834{
1da177e4 2835 char *cmd;
1da177e4 2836
d8fd94d9 2837 if (!tp_features.bluetooth)
78f81cc4 2838 return -ENODEV;
1da177e4
LT		 2839
2840 while ((cmd = next_cmd(&buf))) {
2841 if (strlencmp(cmd, "enable") == 0) {
0e74dc26 2842 bluetooth_set_radiosw(1, 1);
1da177e4 2843 } else if (strlencmp(cmd, "disable") == 0) {
0e74dc26 2844 bluetooth_set_radiosw(0, 1);
1da177e4
LT		 2845 } else
2846 return -EINVAL;
1da177e4
LT		 2847 }
2848
1da177e4
LT		 2849 return 0;
2850}
2851
a5763f22
HMH		 2852static struct ibm_struct bluetooth_driver_data = {
2853 .name = "bluetooth",
2854 .read = bluetooth_read,
2855 .write = bluetooth_write,
d3a6ade4 2856 .exit = bluetooth_exit,
a5763f22
HMH		 2857};
2858
56b6aeb0
HMH		 2859/*************************************************************************
2860 * Wan subdriver
2861 */
2862
f74a27d4
HMH		 2863enum {
2864 /* ACPI GWAN/SWAN bits */
2865 TP_ACPI_WANCARD_HWPRESENT = 0x01, /* Wan hw available */
2866 TP_ACPI_WANCARD_RADIOSSW = 0x02, /* Wan radio enabled */
2867 TP_ACPI_WANCARD_UNK = 0x04, /* unknown function */
2868};
2869
0e74dc26
HMH		 2870static struct rfkill *tpacpi_wan_rfkill;
2871
07431ec8
HMH		 2872static int wan_get_radiosw(void)
2873{
2874 int status;
2875
2876 if (!tp_features.wan)
2877 return -ENODEV;
2878
133ec3bd
HMH		 2879 /* WLSW overrides WWAN in firmware/hardware, reflect that */
2880 if (tp_features.hotkey_wlsw && !hotkey_get_wlsw(&status) && !status)
0e74dc26 2881 return RFKILL_STATE_HARD_BLOCKED;
133ec3bd 2882
07431ec8
HMH		 2883 if (!acpi_evalf(hkey_handle, &status, "GWAN", "d"))
2884 return -EIO;
2885
0e74dc26
HMH		 2886 return ((status & TP_ACPI_WANCARD_RADIOSSW) != 0) ?
2887 RFKILL_STATE_UNBLOCKED : RFKILL_STATE_SOFT_BLOCKED;
07431ec8
HMH		 2888}
2889
0e74dc26
HMH		 2890static void wan_update_rfk(void)
2891{
2892 int status;
2893
2894 if (!tpacpi_wan_rfkill)
2895 return;
2896
2897 status = wan_get_radiosw();
2898 if (status < 0)
2899 return;
2900 rfkill_force_state(tpacpi_wan_rfkill, status);
2901}
2902
2903static int wan_set_radiosw(int radio_on, int update_rfk)
07431ec8
HMH		 2904{
2905 int status;
2906
2907 if (!tp_features.wan)
2908 return -ENODEV;
2909
133ec3bd
HMH		 2910 /* WLSW overrides bluetooth in firmware/hardware, but there is no
2911 * reason to risk weird behaviour. */
2912 if (tp_features.hotkey_wlsw && !hotkey_get_wlsw(&status) && !status
2913 && radio_on)
2914 return -EPERM;
2915
07431ec8
HMH		 2916 if (!acpi_evalf(hkey_handle, &status, "GWAN", "d"))
2917 return -EIO;
2918 if (radio_on)
2919 status |= TP_ACPI_WANCARD_RADIOSSW;
2920 else
2921 status &= ~TP_ACPI_WANCARD_RADIOSSW;
2922 if (!acpi_evalf(hkey_handle, NULL, "SWAN", "vd", status))
2923 return -EIO;
2924
0e74dc26
HMH		 2925 if (update_rfk)
2926 wan_update_rfk();
2927
07431ec8
HMH		 2928 return 0;
2929}
f74a27d4 2930
d3a6ade4
HMH		 2931/* sysfs wan enable ---------------------------------------------------- */
2932static ssize_t wan_enable_show(struct device *dev,
2933 struct device_attribute *attr,
2934 char *buf)
2935{
2936 int status;
2937
2938 status = wan_get_radiosw();
2939 if (status < 0)
2940 return status;
2941
0e74dc26
HMH		 2942 return snprintf(buf, PAGE_SIZE, "%d\n",
2943 (status == RFKILL_STATE_UNBLOCKED) ? 1 : 0);
d3a6ade4
HMH		 2944}
2945
2946static ssize_t wan_enable_store(struct device *dev,
2947 struct device_attribute *attr,
2948 const char *buf, size_t count)
2949{
2950 unsigned long t;
2951 int res;
2952
2953 if (parse_strtoul(buf, 1, &t))
2954 return -EINVAL;
2955
0e74dc26 2956 res = wan_set_radiosw(t, 1);
d3a6ade4
HMH		 2957
2958 return (res) ? res : count;
2959}
2960
2961static struct device_attribute dev_attr_wan_enable =
cc4c24e1 2962 __ATTR(wwan_enable, S_IWUSR | S_IRUGO,
d3a6ade4
HMH		 2963 wan_enable_show, wan_enable_store);
2964
2965/* --------------------------------------------------------------------- */
2966
2967static struct attribute *wan_attributes[] = {
2968 &dev_attr_wan_enable.attr,
2969 NULL
2970};
2971
2972static const struct attribute_group wan_attr_group = {
d3a6ade4
HMH		 2973 .attrs = wan_attributes,
2974};
2975
0e74dc26
HMH		 2976static int tpacpi_wan_rfk_get(void *data, enum rfkill_state *state)
2977{
2978 int wans = wan_get_radiosw();
2979
2980 if (wans < 0)
2981 return wans;
2982
2983 *state = wans;
2984 return 0;
2985}
2986
2987static int tpacpi_wan_rfk_set(void *data, enum rfkill_state state)
2988{
2989 return wan_set_radiosw((state == RFKILL_STATE_UNBLOCKED), 0);
2990}
2991
07431ec8
HMH		 2992static void wan_exit(void)
2993{
0e74dc26
HMH		 2994 if (tpacpi_wan_rfkill)
2995 rfkill_unregister(tpacpi_wan_rfkill);
2996
07431ec8
HMH		 2997 sysfs_remove_group(&tpacpi_pdev->dev.kobj,
2998 &wan_attr_group);
2999}
3000
a5763f22 3001static int __init wan_init(struct ibm_init_struct *iibm)
42adb53c 3002{
d3a6ade4 3003 int res;
d6fdd1e9
HMH		 3004 int status = 0;
3005
fe08bc4b
HMH		 3006 vdbg_printk(TPACPI_DBG_INIT, "initializing wan subdriver\n");
3007
e0c7dfe7 3008 TPACPI_ACPIHANDLE_INIT(hkey);
5fba344c 3009
d8fd94d9 3010 tp_features.wan = hkey_handle &&
d6fdd1e9
HMH		 3011 acpi_evalf(hkey_handle, &status, "GWAN", "qd");
3012
3013 vdbg_printk(TPACPI_DBG_INIT, "wan is %s, status 0x%02x\n",
3014 str_supported(tp_features.wan),
3015 status);
3016
3a872080
HMH		 3017 if (tp_features.wan &&
3018 !(status & TP_ACPI_WANCARD_HWPRESENT)) {
3019 /* no wan hardware present in system */
3020 tp_features.wan = 0;
3021 dbg_printk(TPACPI_DBG_INIT,
3022 "wan hardware not installed\n");
3023 }
3024
0e74dc26
HMH		 3025 if (!tp_features.wan)
3026 return 1;
3027
3028 res = sysfs_create_group(&tpacpi_pdev->dev.kobj,
3a872080 3029 &wan_attr_group);
0e74dc26
HMH		 3030 if (res)
3031 return res;
3032
3033 res = tpacpi_new_rfkill(TPACPI_RFK_WWAN_SW_ID,
3034 &tpacpi_wan_rfkill,
3035 RFKILL_TYPE_WWAN,
3036 "tpacpi_wwan_sw",
3037 tpacpi_wan_rfk_set,
3038 tpacpi_wan_rfk_get);
3039 if (res) {
3040 wan_exit();
3041 return res;
d6fdd1e9 3042 }
fe08bc4b 3043
0e74dc26 3044 return 0;
42adb53c
JF		 3045}
3046
d3a6ade4 3047/* procfs -------------------------------------------------------------- */
42adb53c
JF		 3048static int wan_read(char *p)
3049{
3050 int len = 0;
d6fdd1e9 3051 int status = wan_get_radiosw();
42adb53c 3052
d8fd94d9 3053 if (!tp_features.wan)
42adb53c 3054 len += sprintf(p + len, "status:\t\tnot supported\n");
42adb53c 3055 else {
d6fdd1e9 3056 len += sprintf(p + len, "status:\t\t%s\n",
0e74dc26
HMH		 3057 (status == RFKILL_STATE_UNBLOCKED) ?
3058 "enabled" : "disabled");
42adb53c
JF		 3059 len += sprintf(p + len, "commands:\tenable, disable\n");
3060 }
3061
3062 return len;
3063}
3064
3065static int wan_write(char *buf)
3066{
42adb53c 3067 char *cmd;
42adb53c 3068
d8fd94d9 3069 if (!tp_features.wan)
42adb53c
JF		 3070 return -ENODEV;
3071
3072 while ((cmd = next_cmd(&buf))) {
3073 if (strlencmp(cmd, "enable") == 0) {
0e74dc26 3074 wan_set_radiosw(1, 1);
42adb53c 3075 } else if (strlencmp(cmd, "disable") == 0) {
0e74dc26 3076 wan_set_radiosw(0, 1);
42adb53c
JF		 3077 } else
3078 return -EINVAL;
42adb53c
JF		 3079 }
3080
42adb53c
JF		 3081 return 0;
3082}
3083
a5763f22
HMH		 3084static struct ibm_struct wan_driver_data = {
3085 .name = "wan",
3086 .read = wan_read,
3087 .write = wan_write,
d3a6ade4 3088 .exit = wan_exit,
92641177 3089 .flags.experimental = 1,
a5763f22
HMH		 3090};
3091
56b6aeb0
HMH		 3092/*************************************************************************
3093 * Video subdriver
3094 */
3095
d7c1d17d
HMH		 3096#ifdef CONFIG_THINKPAD_ACPI_VIDEO
3097
f74a27d4
HMH		 3098enum video_access_mode {
3099 TPACPI_VIDEO_NONE = 0,
3100 TPACPI_VIDEO_570, /* 570 */
3101 TPACPI_VIDEO_770, /* 600e/x, 770e, 770x */
3102 TPACPI_VIDEO_NEW, /* all others */
3103};
3104
3105enum { /* video status flags, based on VIDEO_570 */
3106 TP_ACPI_VIDEO_S_LCD = 0x01, /* LCD output enabled */
3107 TP_ACPI_VIDEO_S_CRT = 0x02, /* CRT output enabled */
3108 TP_ACPI_VIDEO_S_DVI = 0x08, /* DVI output enabled */
3109};
3110
3111enum { /* TPACPI_VIDEO_570 constants */
3112 TP_ACPI_VIDEO_570_PHSCMD = 0x87, /* unknown magic constant :( */
3113 TP_ACPI_VIDEO_570_PHSMASK = 0x03, /* PHS bits that map to
3114 * video_status_flags */
3115 TP_ACPI_VIDEO_570_PHS2CMD = 0x8b, /* unknown magic constant :( */
3116 TP_ACPI_VIDEO_570_PHS2SET = 0x80, /* unknown magic constant :( */
3117};
3118
9a8e1738
HMH		 3119static enum video_access_mode video_supported;
3120static int video_orig_autosw;
78f81cc4 3121
f74a27d4
HMH		 3122static int video_autosw_get(void);
3123static int video_autosw_set(int enable);
3124
e0c7dfe7 3125TPACPI_HANDLE(vid2, root, "\\_SB.PCI0.AGPB.VID"); /* G41 */
56b6aeb0 3126
a5763f22 3127static int __init video_init(struct ibm_init_struct *iibm)
1da177e4 3128{
78f81cc4
BD		 3129 int ivga;
3130
fe08bc4b
HMH		 3131 vdbg_printk(TPACPI_DBG_INIT, "initializing video subdriver\n");
3132
e0c7dfe7
HMH		 3133 TPACPI_ACPIHANDLE_INIT(vid);
3134 TPACPI_ACPIHANDLE_INIT(vid2);
5fba344c 3135
78f81cc4
BD		 3136 if (vid2_handle && acpi_evalf(NULL, &ivga, "\\IVGA", "d") && ivga)
3137 /* G41, assume IVGA doesn't change */
3138 vid_handle = vid2_handle;
3139
3140 if (!vid_handle)
3141 /* video switching not supported on R30, R31 */
efa27145 3142 video_supported = TPACPI_VIDEO_NONE;
78f81cc4
BD		 3143 else if (acpi_evalf(vid_handle, &video_orig_autosw, "SWIT", "qd"))
3144 /* 570 */
efa27145 3145 video_supported = TPACPI_VIDEO_570;
78f81cc4
BD		 3146 else if (acpi_evalf(vid_handle, &video_orig_autosw, "^VADL", "qd"))
3147 /* 600e/x, 770e, 770x */
efa27145 3148 video_supported = TPACPI_VIDEO_770;
78f81cc4
BD		 3149 else
3150 /* all others */
efa27145 3151 video_supported = TPACPI_VIDEO_NEW;
1da177e4 3152
fe08bc4b
HMH		 3153 vdbg_printk(TPACPI_DBG_INIT, "video is %s, mode %d\n",
3154 str_supported(video_supported != TPACPI_VIDEO_NONE),
3155 video_supported);
3156
5fba344c 3157 return (video_supported != TPACPI_VIDEO_NONE)? 0 : 1;
1da177e4
LT		 3158}
3159
56b6aeb0
HMH		 3160static void video_exit(void)
3161{
83f34724
HMH		 3162 dbg_printk(TPACPI_DBG_EXIT,
3163 "restoring original video autoswitch mode\n");
3164 if (video_autosw_set(video_orig_autosw))
e0c7dfe7 3165 printk(TPACPI_ERR "error while trying to restore original "
83f34724 3166 "video autoswitch mode\n");
56b6aeb0
HMH		 3167}
3168
83f34724 3169static int video_outputsw_get(void)
1da177e4
LT		 3170{
3171 int status = 0;
3172 int i;
3173
83f34724
HMH		 3174 switch (video_supported) {
3175 case TPACPI_VIDEO_570:
3176 if (!acpi_evalf(NULL, &i, "\\_SB.PHS", "dd",
3177 TP_ACPI_VIDEO_570_PHSCMD))
3178 return -EIO;
3179 status = i & TP_ACPI_VIDEO_570_PHSMASK;
3180 break;
3181 case TPACPI_VIDEO_770:
3182 if (!acpi_evalf(NULL, &i, "\\VCDL", "d"))
3183 return -EIO;
3184 if (i)
3185 status |= TP_ACPI_VIDEO_S_LCD;
3186 if (!acpi_evalf(NULL, &i, "\\VCDC", "d"))
3187 return -EIO;
3188 if (i)
3189 status |= TP_ACPI_VIDEO_S_CRT;
3190 break;
3191 case TPACPI_VIDEO_NEW:
3192 if (!acpi_evalf(NULL, NULL, "\\VUPS", "vd", 1) ||
3193 !acpi_evalf(NULL, &i, "\\VCDC", "d"))
3194 return -EIO;
3195 if (i)
3196 status |= TP_ACPI_VIDEO_S_CRT;
3197
3198 if (!acpi_evalf(NULL, NULL, "\\VUPS", "vd", 0) ||
3199 !acpi_evalf(NULL, &i, "\\VCDL", "d"))
3200 return -EIO;
3201 if (i)
3202 status |= TP_ACPI_VIDEO_S_LCD;
3203 if (!acpi_evalf(NULL, &i, "\\VCDD", "d"))
3204 return -EIO;
3205 if (i)
3206 status |= TP_ACPI_VIDEO_S_DVI;
3207 break;
3208 default:
3209 return -ENOSYS;
78f81cc4
BD		 3210 }
3211
3212 return status;
3213}
1da177e4 3214
83f34724 3215static int video_outputsw_set(int status)
78f81cc4 3216{
83f34724
HMH		 3217 int autosw;
3218 int res = 0;
3219
3220 switch (video_supported) {
3221 case TPACPI_VIDEO_570:
3222 res = acpi_evalf(NULL, NULL,
3223 "\\_SB.PHS2", "vdd",
3224 TP_ACPI_VIDEO_570_PHS2CMD,
3225 status | TP_ACPI_VIDEO_570_PHS2SET);
3226 break;
3227 case TPACPI_VIDEO_770:
3228 autosw = video_autosw_get();
3229 if (autosw < 0)
3230 return autosw;
1da177e4 3231
83f34724
HMH		 3232 res = video_autosw_set(1);
3233 if (res)
3234 return res;
3235 res = acpi_evalf(vid_handle, NULL,
3236 "ASWT", "vdd", status * 0x100, 0);
3237 if (!autosw && video_autosw_set(autosw)) {
35ff8b9f
HMH		 3238 printk(TPACPI_ERR
3239 "video auto-switch left enabled due to error\n");
83f34724
HMH		 3240 return -EIO;
3241 }
3242 break;
3243 case TPACPI_VIDEO_NEW:
3244 res = acpi_evalf(NULL, NULL, "\\VUPS", "vd", 0x80) &&
35ff8b9f 3245 acpi_evalf(NULL, NULL, "\\VSDS", "vdd", status, 1);
83f34724
HMH		 3246 break;
3247 default:
3248 return -ENOSYS;
3249 }
1da177e4 3250
83f34724 3251 return (res)? 0 : -EIO;
1da177e4
LT		 3252}
3253
83f34724 3254static int video_autosw_get(void)
78f81cc4 3255{
83f34724 3256 int autosw = 0;
78f81cc4 3257
83f34724
HMH		 3258 switch (video_supported) {
3259 case TPACPI_VIDEO_570:
3260 if (!acpi_evalf(vid_handle, &autosw, "SWIT", "d"))
3261 return -EIO;
3262 break;
3263 case TPACPI_VIDEO_770:
3264 case TPACPI_VIDEO_NEW:
3265 if (!acpi_evalf(vid_handle, &autosw, "^VDEE", "d"))
3266 return -EIO;
3267 break;
3268 default:
3269 return -ENOSYS;
3270 }
78f81cc4 3271
83f34724 3272 return autosw & 1;
78f81cc4
BD		 3273}
3274
83f34724 3275static int video_autosw_set(int enable)
78f81cc4 3276{
83f34724
HMH		 3277 if (!acpi_evalf(vid_handle, NULL, "_DOS", "vd", (enable)? 1 : 0))
3278 return -EIO;
3279 return 0;
78f81cc4
BD		 3280}
3281
83f34724 3282static int video_outputsw_cycle(void)
78f81cc4 3283{
83f34724
HMH		 3284 int autosw = video_autosw_get();
3285 int res;
78f81cc4 3286
83f34724
HMH		 3287 if (autosw < 0)
3288 return autosw;
78f81cc4 3289
83f34724
HMH		 3290 switch (video_supported) {
3291 case TPACPI_VIDEO_570:
3292 res = video_autosw_set(1);
3293 if (res)
3294 return res;
3295 res = acpi_evalf(ec_handle, NULL, "_Q16", "v");
3296 break;
3297 case TPACPI_VIDEO_770:
3298 case TPACPI_VIDEO_NEW:
3299 res = video_autosw_set(1);
3300 if (res)
3301 return res;
3302 res = acpi_evalf(vid_handle, NULL, "VSWT", "v");
3303 break;
3304 default:
3305 return -ENOSYS;
3306 }
3307 if (!autosw && video_autosw_set(autosw)) {
35ff8b9f
HMH		 3308 printk(TPACPI_ERR
3309 "video auto-switch left enabled due to error\n");
83f34724 3310 return -EIO;
78f81cc4
BD		 3311 }
3312
83f34724
HMH		 3313 return (res)? 0 : -EIO;
3314}
3315
3316static int video_expand_toggle(void)
3317{
3318 switch (video_supported) {
3319 case TPACPI_VIDEO_570:
3320 return acpi_evalf(ec_handle, NULL, "_Q17", "v")?
3321 0 : -EIO;
3322 case TPACPI_VIDEO_770:
3323 return acpi_evalf(vid_handle, NULL, "VEXP", "v")?
3324 0 : -EIO;
3325 case TPACPI_VIDEO_NEW:
3326 return acpi_evalf(NULL, NULL, "\\VEXP", "v")?
3327 0 : -EIO;
3328 default:
3329 return -ENOSYS;
3330 }
3331 /* not reached */
78f81cc4
BD		 3332}
3333
56b6aeb0
HMH		 3334static int video_read(char *p)
3335{
83f34724 3336 int status, autosw;
56b6aeb0
HMH		 3337 int len = 0;
3338
83f34724 3339 if (video_supported == TPACPI_VIDEO_NONE) {
56b6aeb0
HMH		 3340 len += sprintf(p + len, "status:\t\tnot supported\n");
3341 return len;
3342 }
3343
83f34724
HMH		 3344 status = video_outputsw_get();
3345 if (status < 0)
3346 return status;
3347
3348 autosw = video_autosw_get();
3349 if (autosw < 0)
3350 return autosw;
3351
56b6aeb0
HMH		 3352 len += sprintf(p + len, "status:\t\tsupported\n");
3353 len += sprintf(p + len, "lcd:\t\t%s\n", enabled(status, 0));
3354 len += sprintf(p + len, "crt:\t\t%s\n", enabled(status, 1));
efa27145 3355 if (video_supported == TPACPI_VIDEO_NEW)
56b6aeb0
HMH		 3356 len += sprintf(p + len, "dvi:\t\t%s\n", enabled(status, 3));
3357 len += sprintf(p + len, "auto:\t\t%s\n", enabled(autosw, 0));
3358 len += sprintf(p + len, "commands:\tlcd_enable, lcd_disable\n");
3359 len += sprintf(p + len, "commands:\tcrt_enable, crt_disable\n");
efa27145 3360 if (video_supported == TPACPI_VIDEO_NEW)
56b6aeb0
HMH		 3361 len += sprintf(p + len, "commands:\tdvi_enable, dvi_disable\n");
3362 len += sprintf(p + len, "commands:\tauto_enable, auto_disable\n");
3363 len += sprintf(p + len, "commands:\tvideo_switch, expand_toggle\n");
3364
3365 return len;
3366}
3367
78f81cc4 3368static int video_write(char *buf)
1da177e4
LT		 3369{
3370 char *cmd;
3371 int enable, disable, status;
83f34724 3372 int res;
1da177e4 3373
83f34724 3374 if (video_supported == TPACPI_VIDEO_NONE)
78f81cc4
BD		 3375 return -ENODEV;
3376
83f34724
HMH		 3377 enable = 0;
3378 disable = 0;
1da177e4
LT		 3379
3380 while ((cmd = next_cmd(&buf))) {
3381 if (strlencmp(cmd, "lcd_enable") == 0) {
83f34724 3382 enable |= TP_ACPI_VIDEO_S_LCD;
1da177e4 3383 } else if (strlencmp(cmd, "lcd_disable") == 0) {
83f34724 3384 disable |= TP_ACPI_VIDEO_S_LCD;
1da177e4 3385 } else if (strlencmp(cmd, "crt_enable") == 0) {
83f34724 3386 enable |= TP_ACPI_VIDEO_S_CRT;
1da177e4 3387 } else if (strlencmp(cmd, "crt_disable") == 0) {
83f34724 3388 disable |= TP_ACPI_VIDEO_S_CRT;
efa27145 3389 } else if (video_supported == TPACPI_VIDEO_NEW &&
78f81cc4 3390 strlencmp(cmd, "dvi_enable") == 0) {
83f34724 3391 enable |= TP_ACPI_VIDEO_S_DVI;
efa27145 3392 } else if (video_supported == TPACPI_VIDEO_NEW &&
78f81cc4 3393 strlencmp(cmd, "dvi_disable") == 0) {
83f34724 3394 disable |= TP_ACPI_VIDEO_S_DVI;
1da177e4 3395 } else if (strlencmp(cmd, "auto_enable") == 0) {
83f34724
HMH		 3396 res = video_autosw_set(1);
3397 if (res)
3398 return res;
1da177e4 3399 } else if (strlencmp(cmd, "auto_disable") == 0) {
83f34724
HMH		 3400 res = video_autosw_set(0);
3401 if (res)
3402 return res;
1da177e4 3403 } else if (strlencmp(cmd, "video_switch") == 0) {
83f34724
HMH		 3404 res = video_outputsw_cycle();
3405 if (res)
3406 return res;
1da177e4 3407 } else if (strlencmp(cmd, "expand_toggle") == 0) {
83f34724
HMH		 3408 res = video_expand_toggle();
3409 if (res)
3410 return res;
1da177e4
LT		 3411 } else
3412 return -EINVAL;
3413 }
3414
3415 if (enable || disable) {
83f34724
HMH		 3416 status = video_outputsw_get();
3417 if (status < 0)
3418 return status;
3419 res = video_outputsw_set((status & ~disable) | enable);
3420 if (res)
3421 return res;
1da177e4
LT		 3422 }
3423
3424 return 0;
3425}
3426
a5763f22
HMH		 3427static struct ibm_struct video_driver_data = {
3428 .name = "video",
3429 .read = video_read,
3430 .write = video_write,
3431 .exit = video_exit,
3432};
3433
d7c1d17d
HMH		 3434#endif /* CONFIG_THINKPAD_ACPI_VIDEO */
3435
56b6aeb0
HMH		 3436/*************************************************************************
3437 * Light (thinklight) subdriver
3438 */
1da177e4 3439
e0c7dfe7
HMH		 3440TPACPI_HANDLE(lght, root, "\\LGHT"); /* A21e, A2xm/p, T20-22, X20-21 */
3441TPACPI_HANDLE(ledb, ec, "LEDB"); /* G4x */
56b6aeb0 3442
4fa6811b
HMH		 3443static int light_get_status(void)
3444{
3445 int status = 0;
3446
3447 if (tp_features.light_status) {
3448 if (!acpi_evalf(ec_handle, &status, "KBLT", "d"))
3449 return -EIO;
3450 return (!!status);
3451 }
3452
3453 return -ENXIO;
3454}
3455
3456static int light_set_status(int status)
3457{
3458 int rc;
3459
3460 if (tp_features.light) {
3461 if (cmos_handle) {
3462 rc = acpi_evalf(cmos_handle, NULL, NULL, "vd",
3463 (status)?
3464 TP_CMOS_THINKLIGHT_ON :
3465 TP_CMOS_THINKLIGHT_OFF);
3466 } else {
3467 rc = acpi_evalf(lght_handle, NULL, NULL, "vd",
3468 (status)? 1 : 0);
3469 }
3470 return (rc)? 0 : -EIO;
3471 }
3472
3473 return -ENXIO;
3474}
3475
e306501d
HMH		 3476static void light_set_status_worker(struct work_struct *work)
3477{
3478 struct tpacpi_led_classdev *data =
3479 container_of(work, struct tpacpi_led_classdev, work);
3480
3481 if (likely(tpacpi_lifecycle == TPACPI_LIFE_RUNNING))
3482 light_set_status((data->new_brightness != LED_OFF));
3483}
3484
3485static void light_sysfs_set(struct led_classdev *led_cdev,
3486 enum led_brightness brightness)
3487{
3488 struct tpacpi_led_classdev *data =
3489 container_of(led_cdev,
3490 struct tpacpi_led_classdev,
3491 led_classdev);
3492 data->new_brightness = brightness;
e0e3c061 3493 queue_work(tpacpi_wq, &data->work);
e306501d
HMH		 3494}
3495
3496static enum led_brightness light_sysfs_get(struct led_classdev *led_cdev)
3497{
3498 return (light_get_status() == 1)? LED_FULL : LED_OFF;
3499}
3500
3501static struct tpacpi_led_classdev tpacpi_led_thinklight = {
3502 .led_classdev = {
3503 .name = "tpacpi::thinklight",
3504 .brightness_set = &light_sysfs_set,
3505 .brightness_get = &light_sysfs_get,
3506 }
3507};
3508
a5763f22 3509static int __init light_init(struct ibm_init_struct *iibm)
1da177e4 3510{
9c0a76e1 3511 int rc;
e306501d 3512
fe08bc4b
HMH		 3513 vdbg_printk(TPACPI_DBG_INIT, "initializing light subdriver\n");
3514
e0c7dfe7
HMH		 3515 TPACPI_ACPIHANDLE_INIT(ledb);
3516 TPACPI_ACPIHANDLE_INIT(lght);
3517 TPACPI_ACPIHANDLE_INIT(cmos);
e306501d 3518 INIT_WORK(&tpacpi_led_thinklight.work, light_set_status_worker);
5fba344c 3519
78f81cc4 3520 /* light not supported on 570, 600e/x, 770e, 770x, G4x, R30, R31 */
d8fd94d9 3521 tp_features.light = (cmos_handle || lght_handle) && !ledb_handle;
78f81cc4 3522
d8fd94d9 3523 if (tp_features.light)
78f81cc4
BD		 3524 /* light status not supported on
3525 570, 600e/x, 770e, 770x, G4x, R30, R31, R32, X20 */
d8fd94d9
HMH		 3526 tp_features.light_status =
3527 acpi_evalf(ec_handle, NULL, "KBLT", "qv");
1da177e4 3528
9c0a76e1
HMH		 3529 vdbg_printk(TPACPI_DBG_INIT, "light is %s, light status is %s\n",
3530 str_supported(tp_features.light),
3531 str_supported(tp_features.light_status));
fe08bc4b 3532
9c0a76e1
HMH		 3533 if (!tp_features.light)
3534 return 1;
3535
3536 rc = led_classdev_register(&tpacpi_pdev->dev,
3537 &tpacpi_led_thinklight.led_classdev);
e306501d
HMH		 3538
3539 if (rc < 0) {
3540 tp_features.light = 0;
3541 tp_features.light_status = 0;
9c0a76e1
HMH		 3542 } else {
3543 rc = 0;
e306501d 3544 }
9c0a76e1 3545
e306501d
HMH		 3546 return rc;
3547}
3548
3549static void light_exit(void)
3550{
3551 led_classdev_unregister(&tpacpi_led_thinklight.led_classdev);
3552 if (work_pending(&tpacpi_led_thinklight.work))
e0e3c061 3553 flush_workqueue(tpacpi_wq);
1da177e4
LT		 3554}
3555
78f81cc4 3556static int light_read(char *p)
1da177e4
LT		 3557{
3558 int len = 0;
4fa6811b 3559 int status;
1da177e4 3560
d8fd94d9 3561 if (!tp_features.light) {
78f81cc4 3562 len += sprintf(p + len, "status:\t\tnot supported\n");
d8fd94d9 3563 } else if (!tp_features.light_status) {
78f81cc4
BD		 3564 len += sprintf(p + len, "status:\t\tunknown\n");
3565 len += sprintf(p + len, "commands:\ton, off\n");
3566 } else {
4fa6811b
HMH		 3567 status = light_get_status();
3568 if (status < 0)
3569 return status;
1da177e4 3570 len += sprintf(p + len, "status:\t\t%s\n", onoff(status, 0));
78f81cc4
BD		 3571 len += sprintf(p + len, "commands:\ton, off\n");
3572 }
1da177e4
LT		 3573
3574 return len;
3575}
3576
78f81cc4 3577static int light_write(char *buf)
1da177e4 3578{
1da177e4 3579 char *cmd;
4fa6811b 3580 int newstatus = 0;
78f81cc4 3581
d8fd94d9 3582 if (!tp_features.light)
78f81cc4
BD		 3583 return -ENODEV;
3584
1da177e4
LT		 3585 while ((cmd = next_cmd(&buf))) {
3586 if (strlencmp(cmd, "on") == 0) {
4fa6811b 3587 newstatus = 1;
1da177e4 3588 } else if (strlencmp(cmd, "off") == 0) {
4fa6811b 3589 newstatus = 0;
1da177e4
LT		 3590 } else
3591 return -EINVAL;
1da177e4
LT		 3592 }
3593
4fa6811b 3594 return light_set_status(newstatus);
1da177e4
LT		 3595}
3596
a5763f22
HMH		 3597static struct ibm_struct light_driver_data = {
3598 .name = "light",
3599 .read = light_read,
3600 .write = light_write,
e306501d 3601 .exit = light_exit,
a5763f22
HMH		 3602};
3603
56b6aeb0
HMH		 3604/*************************************************************************
3605 * Dock subdriver
3606 */
1da177e4 3607
85998248 3608#ifdef CONFIG_THINKPAD_ACPI_DOCK
56b6aeb0 3609
f74a27d4
HMH		 3610static void dock_notify(struct ibm_struct *ibm, u32 event);
3611static int dock_read(char *p);
3612static int dock_write(char *buf);
3613
e0c7dfe7 3614TPACPI_HANDLE(dock, root, "\\_SB.GDCK", /* X30, X31, X40 */
56b6aeb0
HMH		 3615 "\\_SB.PCI0.DOCK", /* 600e/x,770e,770x,A2xm/p,T20-22,X20-21 */
3616 "\\_SB.PCI0.PCI1.DOCK", /* all others */
3617 "\\_SB.PCI.ISA.SLCE", /* 570 */
3618 ); /* A21e,G4x,R30,R31,R32,R40,R40e,R50e */
3619
5fba344c 3620/* don't list other alternatives as we install a notify handler on the 570 */
e0c7dfe7 3621TPACPI_HANDLE(pci, root, "\\_SB.PCI"); /* 570 */
5fba344c 3622
1ba90e3a
TR		 3623static const struct acpi_device_id ibm_pci_device_ids[] = {
3624 {PCI_ROOT_HID_STRING, 0},
3625 {"", 0},
3626};
3627
d94a7f16
HMH		 3628static struct tp_acpi_drv_struct ibm_dock_acpidriver[2] = {
3629 {
3630 .notify = dock_notify,
3631 .handle = &dock_handle,
3632 .type = ACPI_SYSTEM_NOTIFY,
3633 },
3634 {
996fba08
HMH		 3635 /* THIS ONE MUST NEVER BE USED FOR DRIVER AUTOLOADING.
3636 * We just use it to get notifications of dock hotplug
3637 * in very old thinkpads */
1ba90e3a 3638 .hid = ibm_pci_device_ids,
d94a7f16
HMH		 3639 .notify = dock_notify,
3640 .handle = &pci_handle,
3641 .type = ACPI_SYSTEM_NOTIFY,
3642 },
3643};
3644
3645static struct ibm_struct dock_driver_data[2] = {
3646 {
3647 .name = "dock",
3648 .read = dock_read,
3649 .write = dock_write,
3650 .acpi = &ibm_dock_acpidriver[0],
3651 },
3652 {
3653 .name = "dock",
3654 .acpi = &ibm_dock_acpidriver[1],
3655 },
3656};
3657
1da177e4
LT		 3658#define dock_docked() (_sta(dock_handle) & 1)
3659
a5763f22 3660static int __init dock_init(struct ibm_init_struct *iibm)
5fba344c 3661{
fe08bc4b
HMH		 3662 vdbg_printk(TPACPI_DBG_INIT, "initializing dock subdriver\n");
3663
e0c7dfe7 3664 TPACPI_ACPIHANDLE_INIT(dock);
5fba344c 3665
fe08bc4b
HMH		 3666 vdbg_printk(TPACPI_DBG_INIT, "dock is %s\n",
3667 str_supported(dock_handle != NULL));
3668
5fba344c
HMH		 3669 return (dock_handle)? 0 : 1;
3670}
3671
d94a7f16
HMH		 3672static int __init dock_init2(struct ibm_init_struct *iibm)
3673{
3674 int dock2_needed;
3675
3676 vdbg_printk(TPACPI_DBG_INIT, "initializing dock subdriver part 2\n");
3677
3678 if (dock_driver_data[0].flags.acpi_driver_registered &&
3679 dock_driver_data[0].flags.acpi_notify_installed) {
e0c7dfe7 3680 TPACPI_ACPIHANDLE_INIT(pci);
d94a7f16
HMH		 3681 dock2_needed = (pci_handle != NULL);
3682 vdbg_printk(TPACPI_DBG_INIT,
3683 "dock PCI handler for the TP 570 is %s\n",
3684 str_supported(dock2_needed));
3685 } else {
3686 vdbg_printk(TPACPI_DBG_INIT,
3687 "dock subdriver part 2 not required\n");
3688 dock2_needed = 0;
3689 }
3690
3691 return (dock2_needed)? 0 : 1;
3692}
3693
56b6aeb0
HMH		 3694static void dock_notify(struct ibm_struct *ibm, u32 event)
3695{
3696 int docked = dock_docked();
1ba90e3a
TR		 3697 int pci = ibm->acpi->hid && ibm->acpi->device &&
3698 acpi_match_device_ids(ibm->acpi->device, ibm_pci_device_ids);
962ce8ca 3699 int data;
56b6aeb0
HMH		 3700
3701 if (event == 1 && !pci) /* 570 */
962ce8ca 3702 data = 1; /* button */
56b6aeb0 3703 else if (event == 1 && pci) /* 570 */
962ce8ca 3704 data = 3; /* dock */
56b6aeb0 3705 else if (event == 3 && docked)
962ce8ca 3706 data = 1; /* button */
56b6aeb0 3707 else if (event == 3 && !docked)
962ce8ca 3708 data = 2; /* undock */
56b6aeb0 3709 else if (event == 0 && docked)
962ce8ca 3710 data = 3; /* dock */
56b6aeb0 3711 else {
e0c7dfe7 3712 printk(TPACPI_ERR "unknown dock event %d, status %d\n",
56b6aeb0 3713 event, _sta(dock_handle));
962ce8ca 3714 data = 0; /* unknown */
56b6aeb0 3715 }
14e04fb3 3716 acpi_bus_generate_proc_event(ibm->acpi->device, event, data);
962ce8ca
ZR		 3717 acpi_bus_generate_netlink_event(ibm->acpi->device->pnp.device_class,
3718 ibm->acpi->device->dev.bus_id,
3719 event, data);
56b6aeb0
HMH		 3720}
3721
78f81cc4 3722static int dock_read(char *p)
1da177e4
LT		 3723{
3724 int len = 0;
3725 int docked = dock_docked();
3726
3727 if (!dock_handle)
3728 len += sprintf(p + len, "status:\t\tnot supported\n");
3729 else if (!docked)
3730 len += sprintf(p + len, "status:\t\tundocked\n");
3731 else {
3732 len += sprintf(p + len, "status:\t\tdocked\n");
3733 len += sprintf(p + len, "commands:\tdock, undock\n");
3734 }
3735
3736 return len;
3737}
3738
78f81cc4 3739static int dock_write(char *buf)
1da177e4
LT		 3740{
3741 char *cmd;
3742
3743 if (!dock_docked())
78f81cc4 3744 return -ENODEV;
1da177e4
LT		 3745
3746 while ((cmd = next_cmd(&buf))) {
3747 if (strlencmp(cmd, "undock") == 0) {
78f81cc4
BD		 3748 if (!acpi_evalf(dock_handle, NULL, "_DCK", "vd", 0) ||
3749 !acpi_evalf(dock_handle, NULL, "_EJ0", "vd", 1))
56b6aeb0
HMH		 3750 return -EIO;
3751 } else if (strlencmp(cmd, "dock") == 0) {
3752 if (!acpi_evalf(dock_handle, NULL, "_DCK", "vd", 1))
3753 return -EIO;
3754 } else
3755 return -EINVAL;
1da177e4 3756 }
56b6aeb0
HMH		 3757
3758 return 0;
1da177e4 3759}
56b6aeb0 3760
85998248 3761#endif /* CONFIG_THINKPAD_ACPI_DOCK */
56b6aeb0
HMH		 3762
3763/*************************************************************************
3764 * Bay subdriver
3765 */
1da177e4 3766
85998248 3767#ifdef CONFIG_THINKPAD_ACPI_BAY
f74a27d4 3768
e0c7dfe7 3769TPACPI_HANDLE(bay, root, "\\_SB.PCI.IDE.SECN.MAST", /* 570 */
56b6aeb0
HMH		 3770 "\\_SB.PCI0.IDE0.IDES.IDSM", /* 600e/x, 770e, 770x */
3771 "\\_SB.PCI0.SATA.SCND.MSTR", /* T60, X60, Z60 */
3772 "\\_SB.PCI0.IDE0.SCND.MSTR", /* all others */
3773 ); /* A21e, R30, R31 */
e0c7dfe7 3774TPACPI_HANDLE(bay_ej, bay, "_EJ3", /* 600e/x, A2xm/p, A3x */
56b6aeb0
HMH		 3775 "_EJ0", /* all others */
3776 ); /* 570,A21e,G4x,R30,R31,R32,R40e,R50e */
e0c7dfe7 3777TPACPI_HANDLE(bay2, root, "\\_SB.PCI0.IDE0.PRIM.SLAV", /* A3x, R32 */
56b6aeb0
HMH		 3778 "\\_SB.PCI0.IDE0.IDEP.IDPS", /* 600e/x, 770e, 770x */
3779 ); /* all others */
e0c7dfe7 3780TPACPI_HANDLE(bay2_ej, bay2, "_EJ3", /* 600e/x, 770e, A3x */
56b6aeb0
HMH		 3781 "_EJ0", /* 770x */
3782 ); /* all others */
3783
a5763f22 3784static int __init bay_init(struct ibm_init_struct *iibm)
1da177e4 3785{
fe08bc4b
HMH		 3786 vdbg_printk(TPACPI_DBG_INIT, "initializing bay subdriver\n");
3787
e0c7dfe7 3788 TPACPI_ACPIHANDLE_INIT(bay);
5fba344c 3789 if (bay_handle)
e0c7dfe7
HMH		 3790 TPACPI_ACPIHANDLE_INIT(bay_ej);
3791 TPACPI_ACPIHANDLE_INIT(bay2);
5fba344c 3792 if (bay2_handle)
e0c7dfe7 3793 TPACPI_ACPIHANDLE_INIT(bay2_ej);
5fba344c 3794
d8fd94d9
HMH		 3795 tp_features.bay_status = bay_handle &&
3796 acpi_evalf(bay_handle, NULL, "_STA", "qv");
3797 tp_features.bay_status2 = bay2_handle &&
3798 acpi_evalf(bay2_handle, NULL, "_STA", "qv");
78f81cc4 3799
d8fd94d9
HMH		 3800 tp_features.bay_eject = bay_handle && bay_ej_handle &&
3801 (strlencmp(bay_ej_path, "_EJ0") == 0 || experimental);
3802 tp_features.bay_eject2 = bay2_handle && bay2_ej_handle &&
3803 (strlencmp(bay2_ej_path, "_EJ0") == 0 || experimental);
1da177e4 3804
fe08bc4b
HMH		 3805 vdbg_printk(TPACPI_DBG_INIT,
3806 "bay 1: status %s, eject %s; bay 2: status %s, eject %s\n",
d8fd94d9
HMH		 3807 str_supported(tp_features.bay_status),
3808 str_supported(tp_features.bay_eject),
3809 str_supported(tp_features.bay_status2),
3810 str_supported(tp_features.bay_eject2));
fe08bc4b 3811
d8fd94d9
HMH		 3812 return (tp_features.bay_status || tp_features.bay_eject ||
3813 tp_features.bay_status2 || tp_features.bay_eject2)? 0 : 1;
1da177e4
LT		 3814}
3815
56b6aeb0
HMH		 3816static void bay_notify(struct ibm_struct *ibm, u32 event)
3817{
14e04fb3 3818 acpi_bus_generate_proc_event(ibm->acpi->device, event, 0);
962ce8ca
ZR		 3819 acpi_bus_generate_netlink_event(ibm->acpi->device->pnp.device_class,
3820 ibm->acpi->device->dev.bus_id,
3821 event, 0);
56b6aeb0
HMH		 3822}
3823
78f81cc4
BD		 3824#define bay_occupied(b) (_sta(b##_handle) & 1)
3825
3826static int bay_read(char *p)
1da177e4
LT		 3827{
3828 int len = 0;
78f81cc4
BD		 3829 int occupied = bay_occupied(bay);
3830 int occupied2 = bay_occupied(bay2);
3831 int eject, eject2;
3832
d8fd94d9
HMH		 3833 len += sprintf(p + len, "status:\t\t%s\n",
3834 tp_features.bay_status ?
3835 (occupied ? "occupied" : "unoccupied") :
3836 "not supported");
3837 if (tp_features.bay_status2)
78f81cc4
BD		 3838 len += sprintf(p + len, "status2:\t%s\n", occupied2 ?
3839 "occupied" : "unoccupied");
3840
d8fd94d9
HMH		 3841 eject = tp_features.bay_eject && occupied;
3842 eject2 = tp_features.bay_eject2 && occupied2;
78f81cc4
BD		 3843
3844 if (eject && eject2)
3845 len += sprintf(p + len, "commands:\teject, eject2\n");
3846 else if (eject)
1da177e4 3847 len += sprintf(p + len, "commands:\teject\n");
78f81cc4
BD		 3848 else if (eject2)
3849 len += sprintf(p + len, "commands:\teject2\n");
1da177e4
LT		 3850
3851 return len;
3852}
3853
78f81cc4 3854static int bay_write(char *buf)
1da177e4
LT		 3855{
3856 char *cmd;
3857
d8fd94d9 3858 if (!tp_features.bay_eject && !tp_features.bay_eject2)
78f81cc4
BD		 3859 return -ENODEV;
3860
1da177e4 3861 while ((cmd = next_cmd(&buf))) {
d8fd94d9 3862 if (tp_features.bay_eject && strlencmp(cmd, "eject") == 0) {
78f81cc4
BD		 3863 if (!acpi_evalf(bay_ej_handle, NULL, NULL, "vd", 1))
3864 return -EIO;
d8fd94d9 3865 } else if (tp_features.bay_eject2 &&
78f81cc4
BD		 3866 strlencmp(cmd, "eject2") == 0) {
3867 if (!acpi_evalf(bay2_ej_handle, NULL, NULL, "vd", 1))
1da177e4
LT		 3868 return -EIO;
3869 } else
3870 return -EINVAL;
3871 }
3872
3873 return 0;
78f81cc4 3874}
a5763f22 3875
8d376cd6
HMH		 3876static struct tp_acpi_drv_struct ibm_bay_acpidriver = {
3877 .notify = bay_notify,
3878 .handle = &bay_handle,
3879 .type = ACPI_SYSTEM_NOTIFY,
3880};
3881
a5763f22
HMH		 3882static struct ibm_struct bay_driver_data = {
3883 .name = "bay",
3884 .read = bay_read,
3885 .write = bay_write,
8d376cd6 3886 .acpi = &ibm_bay_acpidriver,
a5763f22
HMH		 3887};
3888
85998248 3889#endif /* CONFIG_THINKPAD_ACPI_BAY */
1da177e4 3890
56b6aeb0
HMH		 3891/*************************************************************************
3892 * CMOS subdriver
3893 */
3894
b616004c
HMH		 3895/* sysfs cmos_command -------------------------------------------------- */
3896static ssize_t cmos_command_store(struct device *dev,
3897 struct device_attribute *attr,
3898 const char *buf, size_t count)
3899{
3900 unsigned long cmos_cmd;
3901 int res;
3902
3903 if (parse_strtoul(buf, 21, &cmos_cmd))
3904 return -EINVAL;
3905
3906 res = issue_thinkpad_cmos_command(cmos_cmd);
3907 return (res)? res : count;
3908}
3909
3910static struct device_attribute dev_attr_cmos_command =
3911 __ATTR(cmos_command, S_IWUSR, NULL, cmos_command_store);
3912
3913/* --------------------------------------------------------------------- */
3914
a5763f22 3915static int __init cmos_init(struct ibm_init_struct *iibm)
5fba344c 3916{
b616004c
HMH		 3917 int res;
3918
fe08bc4b
HMH		 3919 vdbg_printk(TPACPI_DBG_INIT,
3920 "initializing cmos commands subdriver\n");
3921
e0c7dfe7 3922 TPACPI_ACPIHANDLE_INIT(cmos);
5fba344c 3923
fe08bc4b
HMH		 3924 vdbg_printk(TPACPI_DBG_INIT, "cmos commands are %s\n",
3925 str_supported(cmos_handle != NULL));
b616004c
HMH		 3926
3927 res = device_create_file(&tpacpi_pdev->dev, &dev_attr_cmos_command);
3928 if (res)
3929 return res;
3930
5fba344c
HMH		 3931 return (cmos_handle)? 0 : 1;
3932}
3933
b616004c
HMH		 3934static void cmos_exit(void)
3935{
3936 device_remove_file(&tpacpi_pdev->dev, &dev_attr_cmos_command);
3937}
3938
78f81cc4 3939static int cmos_read(char *p)
1da177e4
LT		 3940{
3941 int len = 0;
3942
78f81cc4
BD		 3943 /* cmos not supported on 570, 600e/x, 770e, 770x, A21e, A2xm/p,
3944 R30, R31, T20-22, X20-21 */
1da177e4
LT		 3945 if (!cmos_handle)
3946 len += sprintf(p + len, "status:\t\tnot supported\n");
3947 else {
3948 len += sprintf(p + len, "status:\t\tsupported\n");
78f81cc4 3949 len += sprintf(p + len, "commands:\t<cmd> (<cmd> is 0-21)\n");
1da177e4
LT		 3950 }
3951
3952 return len;
3953}
3954
78f81cc4 3955static int cmos_write(char *buf)
1da177e4
LT		 3956{
3957 char *cmd;
c9bea99c 3958 int cmos_cmd, res;
1da177e4
LT		 3959
3960 while ((cmd = next_cmd(&buf))) {
78f81cc4
BD		 3961 if (sscanf(cmd, "%u", &cmos_cmd) == 1 &&
3962 cmos_cmd >= 0 && cmos_cmd <= 21) {
1da177e4
LT		 3963 /* cmos_cmd set */
3964 } else
3965 return -EINVAL;
3966
c9bea99c
HMH		 3967 res = issue_thinkpad_cmos_command(cmos_cmd);
3968 if (res)
3969 return res;
1da177e4
LT		 3970 }
3971
3972 return 0;
78f81cc4
BD		 3973}
3974
a5763f22
HMH		 3975static struct ibm_struct cmos_driver_data = {
3976 .name = "cmos",
3977 .read = cmos_read,
3978 .write = cmos_write,
b616004c 3979 .exit = cmos_exit,
a5763f22 3980};
56b6aeb0
HMH		 3981
3982/*************************************************************************
3983 * LED subdriver
3984 */
3985
f74a27d4
HMH		 3986enum led_access_mode {
3987 TPACPI_LED_NONE = 0,
3988 TPACPI_LED_570, /* 570 */
3989 TPACPI_LED_OLD, /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20-21 */
3990 TPACPI_LED_NEW, /* all others */
3991};
3992
3993enum { /* For TPACPI_LED_OLD */
3994 TPACPI_LED_EC_HLCL = 0x0c, /* EC reg to get led to power on */
3995 TPACPI_LED_EC_HLBL = 0x0d, /* EC reg to blink a lit led */
3996 TPACPI_LED_EC_HLMS = 0x0e, /* EC reg to select led to command */
3997};
3998
4fa6811b
HMH		 3999enum led_status_t {
4000 TPACPI_LED_OFF = 0,
4001 TPACPI_LED_ON,
4002 TPACPI_LED_BLINK,
4003};
4004
9a8e1738 4005static enum led_access_mode led_supported;
78f81cc4 4006
e0c7dfe7 4007TPACPI_HANDLE(led, ec, "SLED", /* 570 */
35ff8b9f
HMH		 4008 "SYSL", /* 600e/x, 770e, 770x, A21e, A2xm/p, */
4009 /* T20-22, X20-21 */
56b6aeb0
HMH		 4010 "LED", /* all others */
4011 ); /* R30, R31 */
4012
af116101
HMH		 4013#define TPACPI_LED_NUMLEDS 8
4014static struct tpacpi_led_classdev *tpacpi_leds;
4015static enum led_status_t tpacpi_led_state_cache[TPACPI_LED_NUMLEDS];
e3aa51fe 4016static const char * const tpacpi_led_names[TPACPI_LED_NUMLEDS] = {
af116101
HMH		 4017 /* there's a limit of 19 chars + NULL before 2.6.26 */
4018 "tpacpi::power",
4019 "tpacpi:orange:batt",
4020 "tpacpi:green:batt",
4021 "tpacpi::dock_active",
4022 "tpacpi::bay_active",
4023 "tpacpi::dock_batt",
4024 "tpacpi::unknown_led",
4025 "tpacpi::standby",
4026};
4027
24e45bbe 4028static int led_get_status(const unsigned int led)
4fa6811b
HMH		 4029{
4030 int status;
af116101 4031 enum led_status_t led_s;
4fa6811b
HMH		 4032
4033 switch (led_supported) {
4034 case TPACPI_LED_570:
4035 if (!acpi_evalf(ec_handle,
4036 &status, "GLED", "dd", 1 << led))
4037 return -EIO;
af116101 4038 led_s = (status == 0)?
4fa6811b
HMH		 4039 TPACPI_LED_OFF :
4040 ((status == 1)?
4041 TPACPI_LED_ON :
4042 TPACPI_LED_BLINK);
af116101
HMH		 4043 tpacpi_led_state_cache[led] = led_s;
4044 return led_s;
4fa6811b
HMH		 4045 default:
4046 return -ENXIO;
4047 }
4048
4049 /* not reached */
4050}
4051
24e45bbe
HMH		 4052static int led_set_status(const unsigned int led,
4053 const enum led_status_t ledstatus)
4fa6811b
HMH		 4054{
4055 /* off, on, blink. Index is led_status_t */
24e45bbe
HMH		 4056 static const unsigned int led_sled_arg1[] = { 0, 1, 3 };
4057 static const unsigned int led_led_arg1[] = { 0, 0x80, 0xc0 };
4fa6811b
HMH		 4058
4059 int rc = 0;
4060
4061 switch (led_supported) {
4062 case TPACPI_LED_570:
24e45bbe
HMH		 4063 /* 570 */
4064 if (led > 7)
4065 return -EINVAL;
4066 if (!acpi_evalf(led_handle, NULL, NULL, "vdd",
4067 (1 << led), led_sled_arg1[ledstatus]))
4068 rc = -EIO;
4069 break;
4fa6811b 4070 case TPACPI_LED_OLD:
24e45bbe
HMH		 4071 /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20 */
4072 if (led > 7)
4073 return -EINVAL;
4074 rc = ec_write(TPACPI_LED_EC_HLMS, (1 << led));
4075 if (rc >= 0)
4076 rc = ec_write(TPACPI_LED_EC_HLBL,
4077 (ledstatus == TPACPI_LED_BLINK) << led);
4078 if (rc >= 0)
4079 rc = ec_write(TPACPI_LED_EC_HLCL,
4080 (ledstatus != TPACPI_LED_OFF) << led);
4081 break;
4fa6811b 4082 case TPACPI_LED_NEW:
24e45bbe
HMH		 4083 /* all others */
4084 if (!acpi_evalf(led_handle, NULL, NULL, "vdd",
4085 led, led_led_arg1[ledstatus]))
4086 rc = -EIO;
4087 break;
4fa6811b
HMH		 4088 default:
4089 rc = -ENXIO;
4090 }
4091
af116101
HMH		 4092 if (!rc)
4093 tpacpi_led_state_cache[led] = ledstatus;
4094
4095 return rc;
4096}
4097
4098static void led_sysfs_set_status(unsigned int led,
4099 enum led_brightness brightness)
4100{
4101 led_set_status(led,
4102 (brightness == LED_OFF) ?
4103 TPACPI_LED_OFF :
4104 (tpacpi_led_state_cache[led] == TPACPI_LED_BLINK) ?
4105 TPACPI_LED_BLINK : TPACPI_LED_ON);
4106}
4107
4108static void led_set_status_worker(struct work_struct *work)
4109{
4110 struct tpacpi_led_classdev *data =
4111 container_of(work, struct tpacpi_led_classdev, work);
4112
4113 if (likely(tpacpi_lifecycle == TPACPI_LIFE_RUNNING))
4114 led_sysfs_set_status(data->led, data->new_brightness);
4115}
4116
4117static void led_sysfs_set(struct led_classdev *led_cdev,
4118 enum led_brightness brightness)
4119{
4120 struct tpacpi_led_classdev *data = container_of(led_cdev,
4121 struct tpacpi_led_classdev, led_classdev);
4122
4123 data->new_brightness = brightness;
e0e3c061 4124 queue_work(tpacpi_wq, &data->work);
af116101
HMH		 4125}
4126
4127static int led_sysfs_blink_set(struct led_classdev *led_cdev,
4128 unsigned long *delay_on, unsigned long *delay_off)
4129{
4130 struct tpacpi_led_classdev *data = container_of(led_cdev,
4131 struct tpacpi_led_classdev, led_classdev);
4132
4133 /* Can we choose the flash rate? */
4134 if (*delay_on == 0 && *delay_off == 0) {
4135 /* yes. set them to the hardware blink rate (1 Hz) */
4136 *delay_on = 500; /* ms */
4137 *delay_off = 500; /* ms */
4138 } else if ((*delay_on != 500) || (*delay_off != 500))
4139 return -EINVAL;
4140
4141 data->new_brightness = TPACPI_LED_BLINK;
e0e3c061 4142 queue_work(tpacpi_wq, &data->work);
af116101
HMH		 4143
4144 return 0;
4145}
4146
4147static enum led_brightness led_sysfs_get(struct led_classdev *led_cdev)
4148{
4149 int rc;
4150
4151 struct tpacpi_led_classdev *data = container_of(led_cdev,
4152 struct tpacpi_led_classdev, led_classdev);
4153
4154 rc = led_get_status(data->led);
4155
4156 if (rc == TPACPI_LED_OFF || rc < 0)
4157 rc = LED_OFF; /* no error handling in led class :( */
4158 else
4159 rc = LED_FULL;
4160
4fa6811b
HMH		 4161 return rc;
4162}
4163
af116101
HMH		 4164static void led_exit(void)
4165{
4166 unsigned int i;
4167
4168 for (i = 0; i < TPACPI_LED_NUMLEDS; i++) {
4169 if (tpacpi_leds[i].led_classdev.name)
4170 led_classdev_unregister(&tpacpi_leds[i].led_classdev);
4171 }
4172
4173 kfree(tpacpi_leds);
af116101
HMH		 4174}
4175
a5763f22 4176static int __init led_init(struct ibm_init_struct *iibm)
78f81cc4 4177{
af116101
HMH		 4178 unsigned int i;
4179 int rc;
4180
fe08bc4b
HMH		 4181 vdbg_printk(TPACPI_DBG_INIT, "initializing LED subdriver\n");
4182
e0c7dfe7 4183 TPACPI_ACPIHANDLE_INIT(led);
5fba344c 4184
78f81cc4
BD		 4185 if (!led_handle)
4186 /* led not supported on R30, R31 */
efa27145 4187 led_supported = TPACPI_LED_NONE;
78f81cc4
BD		 4188 else if (strlencmp(led_path, "SLED") == 0)
4189 /* 570 */
efa27145 4190 led_supported = TPACPI_LED_570;
78f81cc4
BD		 4191 else if (strlencmp(led_path, "SYSL") == 0)
4192 /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20-21 */
efa27145 4193 led_supported = TPACPI_LED_OLD;
78f81cc4
BD		 4194 else
4195 /* all others */
efa27145 4196 led_supported = TPACPI_LED_NEW;
78f81cc4 4197
fe08bc4b
HMH		 4198 vdbg_printk(TPACPI_DBG_INIT, "LED commands are %s, mode %d\n",
4199 str_supported(led_supported), led_supported);
4200
af116101
HMH		 4201 tpacpi_leds = kzalloc(sizeof(*tpacpi_leds) * TPACPI_LED_NUMLEDS,
4202 GFP_KERNEL);
4203 if (!tpacpi_leds) {
4204 printk(TPACPI_ERR "Out of memory for LED data\n");
4205 return -ENOMEM;
4206 }
4207
4208 for (i = 0; i < TPACPI_LED_NUMLEDS; i++) {
4209 tpacpi_leds[i].led = i;
4210
4211 tpacpi_leds[i].led_classdev.brightness_set = &led_sysfs_set;
4212 tpacpi_leds[i].led_classdev.blink_set = &led_sysfs_blink_set;
4213 if (led_supported == TPACPI_LED_570)
4214 tpacpi_leds[i].led_classdev.brightness_get =
4215 &led_sysfs_get;
4216
4217 tpacpi_leds[i].led_classdev.name = tpacpi_led_names[i];
4218
4219 INIT_WORK(&tpacpi_leds[i].work, led_set_status_worker);
4220
4221 rc = led_classdev_register(&tpacpi_pdev->dev,
4222 &tpacpi_leds[i].led_classdev);
4223 if (rc < 0) {
4224 tpacpi_leds[i].led_classdev.name = NULL;
4225 led_exit();
4226 return rc;
4227 }
4228 }
4229
5fba344c 4230 return (led_supported != TPACPI_LED_NONE)? 0 : 1;
78f81cc4
BD		 4231}
4232
4fa6811b
HMH		 4233#define str_led_status(s) \
4234 ((s) == TPACPI_LED_OFF ? "off" : \
4235 ((s) == TPACPI_LED_ON ? "on" : "blinking"))
78f81cc4
BD		 4236
4237static int led_read(char *p)
1da177e4
LT		 4238{
4239 int len = 0;
4240
78f81cc4
BD		 4241 if (!led_supported) {
4242 len += sprintf(p + len, "status:\t\tnot supported\n");
4243 return len;
4244 }
4245 len += sprintf(p + len, "status:\t\tsupported\n");
4246
efa27145 4247 if (led_supported == TPACPI_LED_570) {
78f81cc4
BD		 4248 /* 570 */
4249 int i, status;
4250 for (i = 0; i < 8; i++) {
4fa6811b
HMH		 4251 status = led_get_status(i);
4252 if (status < 0)
78f81cc4
BD		 4253 return -EIO;
4254 len += sprintf(p + len, "%d:\t\t%s\n",
4fa6811b 4255 i, str_led_status(status));
78f81cc4
BD		 4256 }
4257 }
4258
1da177e4 4259 len += sprintf(p + len, "commands:\t"
78f81cc4 4260 "<led> on, <led> off, <led> blink (<led> is 0-7)\n");
1da177e4
LT		 4261
4262 return len;
4263}
4264
78f81cc4 4265static int led_write(char *buf)
1da177e4
LT		 4266{
4267 char *cmd;
4fa6811b
HMH		 4268 int led, rc;
4269 enum led_status_t s;
78f81cc4
BD		 4270
4271 if (!led_supported)
4272 return -ENODEV;
1da177e4
LT		 4273
4274 while ((cmd = next_cmd(&buf))) {
78f81cc4 4275 if (sscanf(cmd, "%d", &led) != 1 || led < 0 || led > 7)
1da177e4
LT		 4276 return -EINVAL;
4277
78f81cc4 4278 if (strstr(cmd, "off")) {
4fa6811b 4279 s = TPACPI_LED_OFF;
1da177e4 4280 } else if (strstr(cmd, "on")) {
4fa6811b 4281 s = TPACPI_LED_ON;
78f81cc4 4282 } else if (strstr(cmd, "blink")) {
4fa6811b 4283 s = TPACPI_LED_BLINK;
78f81cc4 4284 } else {
4fa6811b 4285 return -EINVAL;
78f81cc4 4286 }
4fa6811b
HMH		 4287
4288 rc = led_set_status(led, s);
4289 if (rc < 0)
4290 return rc;
78f81cc4
BD		 4291 }
4292
4293 return 0;
4294}
4295
a5763f22
HMH		 4296static struct ibm_struct led_driver_data = {
4297 .name = "led",
4298 .read = led_read,
4299 .write = led_write,
af116101 4300 .exit = led_exit,
a5763f22
HMH		 4301};
4302
56b6aeb0
HMH		 4303/*************************************************************************
4304 * Beep subdriver
4305 */
4306
e0c7dfe7 4307TPACPI_HANDLE(beep, ec, "BEEP"); /* all except R30, R31 */
56b6aeb0 4308
a5763f22 4309static int __init beep_init(struct ibm_init_struct *iibm)
5fba344c 4310{
fe08bc4b
HMH		 4311 vdbg_printk(TPACPI_DBG_INIT, "initializing beep subdriver\n");
4312
e0c7dfe7 4313 TPACPI_ACPIHANDLE_INIT(beep);
5fba344c 4314
fe08bc4b
HMH		 4315 vdbg_printk(TPACPI_DBG_INIT, "beep is %s\n",
4316 str_supported(beep_handle != NULL));
4317
5fba344c
HMH		 4318 return (beep_handle)? 0 : 1;
4319}
4320
78f81cc4
BD		 4321static int beep_read(char *p)
4322{
4323 int len = 0;
4324
4325 if (!beep_handle)
4326 len += sprintf(p + len, "status:\t\tnot supported\n");
4327 else {
4328 len += sprintf(p + len, "status:\t\tsupported\n");
4329 len += sprintf(p + len, "commands:\t<cmd> (<cmd> is 0-17)\n");
4330 }
4331
4332 return len;
4333}
4334
4335static int beep_write(char *buf)
4336{
4337 char *cmd;
4338 int beep_cmd;
4339
4340 if (!beep_handle)
4341 return -ENODEV;
4342
4343 while ((cmd = next_cmd(&buf))) {
4344 if (sscanf(cmd, "%u", &beep_cmd) == 1 &&
4345 beep_cmd >= 0 && beep_cmd <= 17) {
4346 /* beep_cmd set */
4347 } else
4348 return -EINVAL;
4349 if (!acpi_evalf(beep_handle, NULL, NULL, "vdd", beep_cmd, 0))
4350 return -EIO;
4351 }
4352
4353 return 0;
4354}
4355
a5763f22
HMH		 4356static struct ibm_struct beep_driver_data = {
4357 .name = "beep",
4358 .read = beep_read,
4359 .write = beep_write,
4360};
4361
56b6aeb0
HMH		 4362/*************************************************************************
4363 * Thermal subdriver
4364 */
78f81cc4 4365
f74a27d4
HMH		 4366enum thermal_access_mode {
4367 TPACPI_THERMAL_NONE = 0, /* No thermal support */
4368 TPACPI_THERMAL_ACPI_TMP07, /* Use ACPI TMP0-7 */
4369 TPACPI_THERMAL_ACPI_UPDT, /* Use ACPI TMP0-7 with UPDT */
4370 TPACPI_THERMAL_TPEC_8, /* Use ACPI EC regs, 8 sensors */
4371 TPACPI_THERMAL_TPEC_16, /* Use ACPI EC regs, 16 sensors */
4372};
4373
4374enum { /* TPACPI_THERMAL_TPEC_* */
4375 TP_EC_THERMAL_TMP0 = 0x78, /* ACPI EC regs TMP 0..7 */
4376 TP_EC_THERMAL_TMP8 = 0xC0, /* ACPI EC regs TMP 8..15 */
4377 TP_EC_THERMAL_TMP_NA = -128, /* ACPI EC sensor not available */
4378};
4379
4380#define TPACPI_MAX_THERMAL_SENSORS 16 /* Max thermal sensors supported */
4381struct ibm_thermal_sensors_struct {
4382 s32 temp[TPACPI_MAX_THERMAL_SENSORS];
4383};
4384
a26f878a 4385static enum thermal_access_mode thermal_read_mode;
78f81cc4 4386
b21a15f6
HMH		 4387/* idx is zero-based */
4388static int thermal_get_sensor(int idx, s32 *value)
4389{
4390 int t;
4391 s8 tmp;
4392 char tmpi[5];
4393
4394 t = TP_EC_THERMAL_TMP0;
4395
4396 switch (thermal_read_mode) {
4397#if TPACPI_MAX_THERMAL_SENSORS >= 16
4398 case TPACPI_THERMAL_TPEC_16:
4399 if (idx >= 8 && idx <= 15) {
4400 t = TP_EC_THERMAL_TMP8;
4401 idx -= 8;
4402 }
4403 /* fallthrough */
4404#endif
4405 case TPACPI_THERMAL_TPEC_8:
4406 if (idx <= 7) {
4407 if (!acpi_ec_read(t + idx, &tmp))
4408 return -EIO;
4409 *value = tmp * 1000;
4410 return 0;
4411 }
4412 break;
4413
4414 case TPACPI_THERMAL_ACPI_UPDT:
4415 if (idx <= 7) {
4416 snprintf(tmpi, sizeof(tmpi), "TMP%c", '0' + idx);
4417 if (!acpi_evalf(ec_handle, NULL, "UPDT", "v"))
4418 return -EIO;
4419 if (!acpi_evalf(ec_handle, &t, tmpi, "d"))
4420 return -EIO;
4421 *value = (t - 2732) * 100;
4422 return 0;
4423 }
4424 break;
4425
4426 case TPACPI_THERMAL_ACPI_TMP07:
4427 if (idx <= 7) {
4428 snprintf(tmpi, sizeof(tmpi), "TMP%c", '0' + idx);
4429 if (!acpi_evalf(ec_handle, &t, tmpi, "d"))
4430 return -EIO;
4431 if (t > 127 || t < -127)
4432 t = TP_EC_THERMAL_TMP_NA;
4433 *value = t * 1000;
4434 return 0;
4435 }
4436 break;
4437
4438 case TPACPI_THERMAL_NONE:
4439 default:
4440 return -ENOSYS;
4441 }
4442
4443 return -EINVAL;
4444}
4445
4446static int thermal_get_sensors(struct ibm_thermal_sensors_struct *s)
4447{
4448 int res, i;
4449 int n;
4450
4451 n = 8;
4452 i = 0;
4453
4454 if (!s)
4455 return -EINVAL;
4456
4457 if (thermal_read_mode == TPACPI_THERMAL_TPEC_16)
4458 n = 16;
4459
35ff8b9f 4460 for (i = 0 ; i < n; i++) {
b21a15f6
HMH		 4461 res = thermal_get_sensor(i, &s->temp[i]);
4462 if (res)
4463 return res;
4464 }
4465
4466 return n;
4467}
f74a27d4 4468
2c37aa4e
HMH		 4469/* sysfs temp##_input -------------------------------------------------- */
4470
4471static ssize_t thermal_temp_input_show(struct device *dev,
4472 struct device_attribute *attr,
4473 char *buf)
4474{
4475 struct sensor_device_attribute *sensor_attr =
4476 to_sensor_dev_attr(attr);
4477 int idx = sensor_attr->index;
4478 s32 value;
4479 int res;
4480
4481 res = thermal_get_sensor(idx, &value);
4482 if (res)
4483 return res;
4484 if (value == TP_EC_THERMAL_TMP_NA * 1000)
4485 return -ENXIO;
4486
4487 return snprintf(buf, PAGE_SIZE, "%d\n", value);
4488}
4489
4490#define THERMAL_SENSOR_ATTR_TEMP(_idxA, _idxB) \
35ff8b9f
HMH		 4491 SENSOR_ATTR(temp##_idxA##_input, S_IRUGO, \
4492 thermal_temp_input_show, NULL, _idxB)
2c37aa4e
HMH		 4493
4494static struct sensor_device_attribute sensor_dev_attr_thermal_temp_input[] = {
4495 THERMAL_SENSOR_ATTR_TEMP(1, 0),
4496 THERMAL_SENSOR_ATTR_TEMP(2, 1),
4497 THERMAL_SENSOR_ATTR_TEMP(3, 2),
4498 THERMAL_SENSOR_ATTR_TEMP(4, 3),
4499 THERMAL_SENSOR_ATTR_TEMP(5, 4),
4500 THERMAL_SENSOR_ATTR_TEMP(6, 5),
4501 THERMAL_SENSOR_ATTR_TEMP(7, 6),
4502 THERMAL_SENSOR_ATTR_TEMP(8, 7),
4503 THERMAL_SENSOR_ATTR_TEMP(9, 8),
4504 THERMAL_SENSOR_ATTR_TEMP(10, 9),
4505 THERMAL_SENSOR_ATTR_TEMP(11, 10),
4506 THERMAL_SENSOR_ATTR_TEMP(12, 11),
4507 THERMAL_SENSOR_ATTR_TEMP(13, 12),
4508 THERMAL_SENSOR_ATTR_TEMP(14, 13),
4509 THERMAL_SENSOR_ATTR_TEMP(15, 14),
4510 THERMAL_SENSOR_ATTR_TEMP(16, 15),
4511};
4512
4513#define THERMAL_ATTRS(X) \
4514 &sensor_dev_attr_thermal_temp_input[X].dev_attr.attr
4515
4516static struct attribute *thermal_temp_input_attr[] = {
4517 THERMAL_ATTRS(8),
4518 THERMAL_ATTRS(9),
4519 THERMAL_ATTRS(10),
4520 THERMAL_ATTRS(11),
4521 THERMAL_ATTRS(12),
4522 THERMAL_ATTRS(13),
4523 THERMAL_ATTRS(14),
4524 THERMAL_ATTRS(15),
4525 THERMAL_ATTRS(0),
4526 THERMAL_ATTRS(1),
4527 THERMAL_ATTRS(2),
4528 THERMAL_ATTRS(3),
4529 THERMAL_ATTRS(4),
4530 THERMAL_ATTRS(5),
4531 THERMAL_ATTRS(6),
4532 THERMAL_ATTRS(7),
4533 NULL
4534};
4535
4536static const struct attribute_group thermal_temp_input16_group = {
4537 .attrs = thermal_temp_input_attr
4538};
4539
4540static const struct attribute_group thermal_temp_input8_group = {
4541 .attrs = &thermal_temp_input_attr[8]
4542};
4543
4544#undef THERMAL_SENSOR_ATTR_TEMP
4545#undef THERMAL_ATTRS
4546
4547/* --------------------------------------------------------------------- */
4548
a5763f22 4549static int __init thermal_init(struct ibm_init_struct *iibm)
78f81cc4 4550{
60eb0b35
HMH		 4551 u8 t, ta1, ta2;
4552 int i;
5fba344c 4553 int acpi_tmp7;
2c37aa4e 4554 int res;
5fba344c 4555
fe08bc4b
HMH		 4556 vdbg_printk(TPACPI_DBG_INIT, "initializing thermal subdriver\n");
4557
5fba344c 4558 acpi_tmp7 = acpi_evalf(ec_handle, NULL, "TMP7", "qv");
60eb0b35 4559
3d6f99ca 4560 if (thinkpad_id.ec_model) {
60eb0b35
HMH		 4561 /*
4562 * Direct EC access mode: sensors at registers
4563 * 0x78-0x7F, 0xC0-0xC7. Registers return 0x00 for
4564 * non-implemented, thermal sensors return 0x80 when
4565 * not available
4566 */
78f81cc4 4567
60eb0b35
HMH		 4568 ta1 = ta2 = 0;
4569 for (i = 0; i < 8; i++) {
04cc862c 4570 if (acpi_ec_read(TP_EC_THERMAL_TMP0 + i, &t)) {
60eb0b35
HMH		 4571 ta1 |= t;
4572 } else {
4573 ta1 = 0;
4574 break;
4575 }
04cc862c 4576 if (acpi_ec_read(TP_EC_THERMAL_TMP8 + i, &t)) {
60eb0b35
HMH		 4577 ta2 |= t;
4578 } else {
4579 ta1 = 0;
4580 break;
4581 }
4582 }
4583 if (ta1 == 0) {
4584 /* This is sheer paranoia, but we handle it anyway */
4585 if (acpi_tmp7) {
e0c7dfe7 4586 printk(TPACPI_ERR
60eb0b35 4587 "ThinkPad ACPI EC access misbehaving, "
35ff8b9f
HMH		 4588 "falling back to ACPI TMPx access "
4589 "mode\n");
efa27145 4590 thermal_read_mode = TPACPI_THERMAL_ACPI_TMP07;
60eb0b35 4591 } else {
e0c7dfe7 4592 printk(TPACPI_ERR
60eb0b35
HMH		 4593 "ThinkPad ACPI EC access misbehaving, "
4594 "disabling thermal sensors access\n");
efa27145 4595 thermal_read_mode = TPACPI_THERMAL_NONE;
60eb0b35
HMH		 4596 }
4597 } else {
4598 thermal_read_mode =
4599 (ta2 != 0) ?
efa27145 4600 TPACPI_THERMAL_TPEC_16 : TPACPI_THERMAL_TPEC_8;
60eb0b35
HMH		 4601 }
4602 } else if (acpi_tmp7) {
a26f878a
HMH		 4603 if (acpi_evalf(ec_handle, NULL, "UPDT", "qv")) {
4604 /* 600e/x, 770e, 770x */
efa27145 4605 thermal_read_mode = TPACPI_THERMAL_ACPI_UPDT;
a26f878a
HMH		 4606 } else {
4607 /* Standard ACPI TMPx access, max 8 sensors */
efa27145 4608 thermal_read_mode = TPACPI_THERMAL_ACPI_TMP07;
a26f878a
HMH		 4609 }
4610 } else {
4611 /* temperatures not supported on 570, G4x, R30, R31, R32 */
efa27145 4612 thermal_read_mode = TPACPI_THERMAL_NONE;
a26f878a 4613 }
78f81cc4 4614
fe08bc4b
HMH		 4615 vdbg_printk(TPACPI_DBG_INIT, "thermal is %s, mode %d\n",
4616 str_supported(thermal_read_mode != TPACPI_THERMAL_NONE),
4617 thermal_read_mode);
4618
35ff8b9f 4619 switch (thermal_read_mode) {
2c37aa4e 4620 case TPACPI_THERMAL_TPEC_16:
7fd40029 4621 res = sysfs_create_group(&tpacpi_sensors_pdev->dev.kobj,
2c37aa4e
HMH		 4622 &thermal_temp_input16_group);
4623 if (res)
4624 return res;
4625 break;
4626 case TPACPI_THERMAL_TPEC_8:
4627 case TPACPI_THERMAL_ACPI_TMP07:
4628 case TPACPI_THERMAL_ACPI_UPDT:
7fd40029 4629 res = sysfs_create_group(&tpacpi_sensors_pdev->dev.kobj,
2c37aa4e
HMH		 4630 &thermal_temp_input8_group);
4631 if (res)
4632 return res;
4633 break;
4634 case TPACPI_THERMAL_NONE:
4635 default:
4636 return 1;
4637 }
4638
4639 return 0;
4640}
4641
4642static void thermal_exit(void)
4643{
35ff8b9f 4644 switch (thermal_read_mode) {
2c37aa4e 4645 case TPACPI_THERMAL_TPEC_16:
7fd40029 4646 sysfs_remove_group(&tpacpi_sensors_pdev->dev.kobj,
2c37aa4e
HMH		 4647 &thermal_temp_input16_group);
4648 break;
4649 case TPACPI_THERMAL_TPEC_8:
4650 case TPACPI_THERMAL_ACPI_TMP07:
4651 case TPACPI_THERMAL_ACPI_UPDT:
7fd40029 4652 sysfs_remove_group(&tpacpi_sensors_pdev->dev.kobj,
2c37aa4e
HMH		 4653 &thermal_temp_input16_group);
4654 break;
4655 case TPACPI_THERMAL_NONE:
4656 default:
4657 break;
4658 }
78f81cc4
BD		 4659}
4660
a26f878a
HMH		 4661static int thermal_read(char *p)
4662{
4663 int len = 0;
4664 int n, i;
4665 struct ibm_thermal_sensors_struct t;
4666
4667 n = thermal_get_sensors(&t);
4668 if (unlikely(n < 0))
4669 return n;
4670
4671 len += sprintf(p + len, "temperatures:\t");
4672
4673 if (n > 0) {
4674 for (i = 0; i < (n - 1); i++)
4675 len += sprintf(p + len, "%d ", t.temp[i] / 1000);
4676 len += sprintf(p + len, "%d\n", t.temp[i] / 1000);
4677 } else
4678 len += sprintf(p + len, "not supported\n");
78f81cc4
BD		 4679
4680 return len;
4681}
4682
a5763f22
HMH		 4683static struct ibm_struct thermal_driver_data = {
4684 .name = "thermal",
4685 .read = thermal_read,
2c37aa4e 4686 .exit = thermal_exit,
a5763f22
HMH		 4687};
4688
56b6aeb0
HMH		 4689/*************************************************************************
4690 * EC Dump subdriver
4691 */
4692
78f81cc4
BD		 4693static u8 ecdump_regs[256];
4694
4695static int ecdump_read(char *p)
4696{
4697 int len = 0;
4698 int i, j;
4699 u8 v;
4700
4701 len += sprintf(p + len, "EC "
4702 " +00 +01 +02 +03 +04 +05 +06 +07"
4703 " +08 +09 +0a +0b +0c +0d +0e +0f\n");
4704 for (i = 0; i < 256; i += 16) {
4705 len += sprintf(p + len, "EC 0x%02x:", i);
4706 for (j = 0; j < 16; j++) {
4707 if (!acpi_ec_read(i + j, &v))
4708 break;
4709 if (v != ecdump_regs[i + j])
4710 len += sprintf(p + len, " *%02x", v);
4711 else
4712 len += sprintf(p + len, " %02x", v);
4713 ecdump_regs[i + j] = v;
4714 }
4715 len += sprintf(p + len, "\n");
4716 if (j != 16)
4717 break;
4718 }
4719
4720 /* These are way too dangerous to advertise openly... */
4721#if 0
4722 len += sprintf(p + len, "commands:\t0x<offset> 0x<value>"
4723 " (<offset> is 00-ff, <value> is 00-ff)\n");
4724 len += sprintf(p + len, "commands:\t0x<offset> <value> "
4725 " (<offset> is 00-ff, <value> is 0-255)\n");
4726#endif
4727 return len;
4728}
4729
4730static int ecdump_write(char *buf)
4731{
4732 char *cmd;
4733 int i, v;
4734
4735 while ((cmd = next_cmd(&buf))) {
4736 if (sscanf(cmd, "0x%x 0x%x", &i, &v) == 2) {
4737 /* i and v set */
4738 } else if (sscanf(cmd, "0x%x %u", &i, &v) == 2) {
4739 /* i and v set */
4740 } else
4741 return -EINVAL;
4742 if (i >= 0 && i < 256 && v >= 0 && v < 256) {
4743 if (!acpi_ec_write(i, v))
1da177e4
LT		 4744 return -EIO;
4745 } else
4746 return -EINVAL;
4747 }
4748
4749 return 0;
78f81cc4
BD		 4750}
4751
a5763f22
HMH		 4752static struct ibm_struct ecdump_driver_data = {
4753 .name = "ecdump",
4754 .read = ecdump_read,
4755 .write = ecdump_write,
92641177 4756 .flags.experimental = 1,
a5763f22
HMH		 4757};
4758
56b6aeb0
HMH		 4759/*************************************************************************
4760 * Backlight/brightness subdriver
4761 */
4762
f74a27d4
HMH		 4763#define TPACPI_BACKLIGHT_DEV_NAME "thinkpad_screen"
4764
e11aecf1
HMH		 4765enum {
4766 TP_EC_BACKLIGHT = 0x31,
4767
4768 /* TP_EC_BACKLIGHT bitmasks */
4769 TP_EC_BACKLIGHT_LVLMSK = 0x1F,
4770 TP_EC_BACKLIGHT_CMDMSK = 0xE0,
4771 TP_EC_BACKLIGHT_MAPSW = 0x20,
4772};
4773
94954cc6 4774static struct backlight_device *ibm_backlight_device;
f74a27d4
HMH		 4775static int brightness_mode;
4776static unsigned int brightness_enable = 2; /* 2 = auto, 0 = no, 1 = yes */
4777
b21a15f6 4778static struct mutex brightness_mutex;
56b6aeb0 4779
b21a15f6
HMH		 4780/*
4781 * ThinkPads can read brightness from two places: EC 0x31, or
4782 * CMOS NVRAM byte 0x5E, bits 0-3.
e11aecf1
HMH		 4783 *
4784 * EC 0x31 has the following layout
4785 * Bit 7: unknown function
4786 * Bit 6: unknown function
4787 * Bit 5: Z: honour scale changes, NZ: ignore scale changes
4788 * Bit 4: must be set to zero to avoid problems
4789 * Bit 3-0: backlight brightness level
4790 *
4791 * brightness_get_raw returns status data in the EC 0x31 layout
b21a15f6 4792 */
e11aecf1 4793static int brightness_get_raw(int *status)
b21a15f6
HMH		 4794{
4795 u8 lec = 0, lcmos = 0, level = 0;
4796
4797 if (brightness_mode & 1) {
e11aecf1 4798 if (!acpi_ec_read(TP_EC_BACKLIGHT, &lec))
b21a15f6 4799 return -EIO;
e11aecf1 4800 level = lec & TP_EC_BACKLIGHT_LVLMSK;
b21a15f6
HMH		 4801 };
4802 if (brightness_mode & 2) {
4803 lcmos = (nvram_read_byte(TP_NVRAM_ADDR_BRIGHTNESS)
4804 & TP_NVRAM_MASK_LEVEL_BRIGHTNESS)
4805 >> TP_NVRAM_POS_LEVEL_BRIGHTNESS;
4806 lcmos &= (tp_features.bright_16levels)? 0x0f : 0x07;
4807 level = lcmos;
4808 }
4809
2d5e94d7 4810 if (brightness_mode == 3) {
e11aecf1
HMH		 4811 *status = lec; /* Prefer EC, CMOS is just a backing store */
4812 lec &= TP_EC_BACKLIGHT_LVLMSK;
2d5e94d7
HMH		 4813 if (lec == lcmos)
4814 tp_warned.bright_cmos_ec_unsync = 0;
4815 else {
4816 if (!tp_warned.bright_cmos_ec_unsync) {
4817 printk(TPACPI_ERR
4818 "CMOS NVRAM (%u) and EC (%u) do not "
4819 "agree on display brightness level\n",
4820 (unsigned int) lcmos,
4821 (unsigned int) lec);
4822 tp_warned.bright_cmos_ec_unsync = 1;
4823 }
4824 return -EIO;
4825 }
e11aecf1
HMH		 4826 } else {
4827 *status = level;
b21a15f6
HMH		 4828 }
4829
e11aecf1 4830 return 0;
b21a15f6
HMH		 4831}
4832
4833/* May return EINTR which can always be mapped to ERESTARTSYS */
4834static int brightness_set(int value)
4835{
4836 int cmos_cmd, inc, i, res;
4837 int current_value;
e11aecf1 4838 int command_bits;
b21a15f6 4839
e11aecf1
HMH		 4840 if (value > ((tp_features.bright_16levels)? 15 : 7) ||
4841 value < 0)
b21a15f6
HMH		 4842 return -EINVAL;
4843
4844 res = mutex_lock_interruptible(&brightness_mutex);
4845 if (res < 0)
4846 return res;
4847
e11aecf1
HMH		 4848 res = brightness_get_raw(&current_value);
4849 if (res < 0)
b21a15f6 4850 goto errout;
e11aecf1
HMH		 4851
4852 command_bits = current_value & TP_EC_BACKLIGHT_CMDMSK;
4853 current_value &= TP_EC_BACKLIGHT_LVLMSK;
b21a15f6
HMH		 4854
4855 cmos_cmd = value > current_value ?
4856 TP_CMOS_BRIGHTNESS_UP :
4857 TP_CMOS_BRIGHTNESS_DOWN;
4858 inc = (value > current_value)? 1 : -1;
4859
4860 res = 0;
4861 for (i = current_value; i != value; i += inc) {
4862 if ((brightness_mode & 2) &&
4863 issue_thinkpad_cmos_command(cmos_cmd)) {
4864 res = -EIO;
4865 goto errout;
4866 }
4867 if ((brightness_mode & 1) &&
e11aecf1
HMH		 4868 !acpi_ec_write(TP_EC_BACKLIGHT,
4869 (i + inc) | command_bits)) {
b21a15f6
HMH		 4870 res = -EIO;
4871 goto errout;;
4872 }
4873 }
4874
4875errout:
4876 mutex_unlock(&brightness_mutex);
4877 return res;
4878}
4879
4880/* sysfs backlight class ----------------------------------------------- */
4881
4882static int brightness_update_status(struct backlight_device *bd)
4883{
4884 /* it is the backlight class's job (caller) to handle
4885 * EINTR and other errors properly */
4886 return brightness_set(
4887 (bd->props.fb_blank == FB_BLANK_UNBLANK &&
4888 bd->props.power == FB_BLANK_UNBLANK) ?
4889 bd->props.brightness : 0);
4890}
4891
e11aecf1 4892static int brightness_get(struct backlight_device *bd)
a3f104c0 4893{
e11aecf1 4894 int status, res;
a3f104c0 4895
e11aecf1
HMH		 4896 res = brightness_get_raw(&status);
4897 if (res < 0)
4898 return 0; /* FIXME: teach backlight about error handling */
e11e211a 4899
e11aecf1 4900 return status & TP_EC_BACKLIGHT_LVLMSK;
e11e211a
HMH		 4901}
4902
b21a15f6 4903static struct backlight_ops ibm_backlight_data = {
35ff8b9f
HMH		 4904 .get_brightness = brightness_get,
4905 .update_status = brightness_update_status,
56b6aeb0 4906};
e11e211a 4907
b21a15f6 4908/* --------------------------------------------------------------------- */
e11e211a 4909
a5763f22 4910static int __init brightness_init(struct ibm_init_struct *iibm)
56b6aeb0
HMH		 4911{
4912 int b;
4913
fe08bc4b
HMH		 4914 vdbg_printk(TPACPI_DBG_INIT, "initializing brightness subdriver\n");
4915
f432255e
HMH		 4916 mutex_init(&brightness_mutex);
4917
b5972796
HMH		 4918 /*
4919 * We always attempt to detect acpi support, so as to switch
4920 * Lenovo Vista BIOS to ACPI brightness mode even if we are not
4921 * going to publish a backlight interface
4922 */
4923 b = tpacpi_check_std_acpi_brightness_support();
4924 if (b > 0) {
4925 if (thinkpad_id.vendor == PCI_VENDOR_ID_LENOVO) {
4926 printk(TPACPI_NOTICE
4927 "Lenovo BIOS switched to ACPI backlight "
4928 "control mode\n");
4929 }
4930 if (brightness_enable > 1) {
e0c7dfe7 4931 printk(TPACPI_NOTICE
35ff8b9f
HMH		 4932 "standard ACPI backlight interface "
4933 "available, not loading native one...\n");
e11e211a
HMH		 4934 return 1;
4935 }
87cc537a
HMH		 4936 }
4937
b5972796
HMH		 4938 if (!brightness_enable) {
4939 dbg_printk(TPACPI_DBG_INIT,
4940 "brightness support disabled by "
4941 "module parameter\n");
4942 return 1;
4943 }
4944
4945 if (b > 16) {
4946 printk(TPACPI_ERR
4947 "Unsupported brightness interface, "
4948 "please contact %s\n", TPACPI_MAIL);
4949 return 1;
4950 }
4951 if (b == 16)
4952 tp_features.bright_16levels = 1;
4953
24d3b774
HMH		 4954 if (!brightness_mode) {
4955 if (thinkpad_id.vendor == PCI_VENDOR_ID_LENOVO)
4956 brightness_mode = 2;
4957 else
4958 brightness_mode = 3;
4959
4960 dbg_printk(TPACPI_DBG_INIT, "selected brightness_mode=%d\n",
4961 brightness_mode);
4962 }
4963
4964 if (brightness_mode > 3)
4965 return -EINVAL;
4966
e11aecf1 4967 if (brightness_get_raw(&b) < 0)
24d3b774 4968 return 1;
56b6aeb0 4969
a3f104c0 4970 if (tp_features.bright_16levels)
35ff8b9f
HMH		 4971 printk(TPACPI_INFO
4972 "detected a 16-level brightness capable ThinkPad\n");
a3f104c0 4973
7d5a015e
HMH		 4974 ibm_backlight_device = backlight_device_register(
4975 TPACPI_BACKLIGHT_DEV_NAME, NULL, NULL,
4976 &ibm_backlight_data);
56b6aeb0 4977 if (IS_ERR(ibm_backlight_device)) {
e0c7dfe7 4978 printk(TPACPI_ERR "Could not register backlight device\n");
56b6aeb0
HMH		 4979 return PTR_ERR(ibm_backlight_device);
4980 }
fe08bc4b 4981 vdbg_printk(TPACPI_DBG_INIT, "brightness is supported\n");
56b6aeb0 4982
a3f104c0
HMH		 4983 ibm_backlight_device->props.max_brightness =
4984 (tp_features.bright_16levels)? 15 : 7;
e11aecf1 4985 ibm_backlight_device->props.brightness = b & TP_EC_BACKLIGHT_LVLMSK;
56b6aeb0
HMH		 4986 backlight_update_status(ibm_backlight_device);
4987
4988 return 0;
4989}
4990
4991static void brightness_exit(void)
4992{
4993 if (ibm_backlight_device) {
fe08bc4b
HMH		 4994 vdbg_printk(TPACPI_DBG_EXIT,
4995 "calling backlight_device_unregister()\n");
56b6aeb0 4996 backlight_device_unregister(ibm_backlight_device);
56b6aeb0
HMH		 4997 }
4998}
4999
56b6aeb0
HMH		 5000static int brightness_read(char *p)
5001{
5002 int len = 0;
5003 int level;
5004
35ff8b9f
HMH		 5005 level = brightness_get(NULL);
5006 if (level < 0) {
56b6aeb0
HMH		 5007 len += sprintf(p + len, "level:\t\tunreadable\n");
5008 } else {
a3f104c0 5009 len += sprintf(p + len, "level:\t\t%d\n", level);
56b6aeb0
HMH		 5010 len += sprintf(p + len, "commands:\tup, down\n");
5011 len += sprintf(p + len, "commands:\tlevel <level>"
a3f104c0
HMH		 5012 " (<level> is 0-%d)\n",
5013 (tp_features.bright_16levels) ? 15 : 7);
56b6aeb0
HMH		 5014 }
5015
5016 return len;
5017}
5018
8acb0250
HM		 5019static int brightness_write(char *buf)
5020{
5021 int level;
4273af8d 5022 int rc;
1da177e4 5023 char *cmd;
a3f104c0 5024 int max_level = (tp_features.bright_16levels) ? 15 : 7;
1da177e4 5025
4273af8d
HMH		 5026 level = brightness_get(NULL);
5027 if (level < 0)
5028 return level;
78f81cc4 5029
4273af8d 5030 while ((cmd = next_cmd(&buf))) {
78f81cc4 5031 if (strlencmp(cmd, "up") == 0) {
4273af8d
HMH		 5032 if (level < max_level)
5033 level++;
78f81cc4 5034 } else if (strlencmp(cmd, "down") == 0) {
4273af8d
HMH		 5035 if (level > 0)
5036 level--;
5037 } else if (sscanf(cmd, "level %d", &level) == 1 &&
5038 level >= 0 && level <= max_level) {
5039 /* new level set */
78f81cc4
BD		 5040 } else
5041 return -EINVAL;
78f81cc4
BD		 5042 }
5043
4273af8d
HMH		 5044 /*
5045 * Now we know what the final level should be, so we try to set it.
5046 * Doing it this way makes the syscall restartable in case of EINTR
5047 */
5048 rc = brightness_set(level);
5049 return (rc == -EINTR)? ERESTARTSYS : rc;
78f81cc4
BD		 5050}
5051
a5763f22
HMH		 5052static struct ibm_struct brightness_driver_data = {
5053 .name = "brightness",
5054 .read = brightness_read,
5055 .write = brightness_write,
5056 .exit = brightness_exit,
5057};
5058
56b6aeb0
HMH		 5059/*************************************************************************
5060 * Volume subdriver
5061 */
fb87a811 5062
f74a27d4
HMH		 5063static int volume_offset = 0x30;
5064
78f81cc4
BD		 5065static int volume_read(char *p)
5066{
5067 int len = 0;
5068 u8 level;
5069
5070 if (!acpi_ec_read(volume_offset, &level)) {
5071 len += sprintf(p + len, "level:\t\tunreadable\n");
5072 } else {
5073 len += sprintf(p + len, "level:\t\t%d\n", level & 0xf);
5074 len += sprintf(p + len, "mute:\t\t%s\n", onoff(level, 6));
5075 len += sprintf(p + len, "commands:\tup, down, mute\n");
5076 len += sprintf(p + len, "commands:\tlevel <level>"
5077 " (<level> is 0-15)\n");
5078 }
5079
5080 return len;
5081}
5082
78f81cc4
BD		 5083static int volume_write(char *buf)
5084{
5085 int cmos_cmd, inc, i;
5086 u8 level, mute;
5087 int new_level, new_mute;
5088 char *cmd;
5089
5090 while ((cmd = next_cmd(&buf))) {
5091 if (!acpi_ec_read(volume_offset, &level))
5092 return -EIO;
5093 new_mute = mute = level & 0x40;
5094 new_level = level = level & 0xf;
5095
5096 if (strlencmp(cmd, "up") == 0) {
5097 if (mute)
5098 new_mute = 0;
5099 else
5100 new_level = level == 15 ? 15 : level + 1;
5101 } else if (strlencmp(cmd, "down") == 0) {
5102 if (mute)
5103 new_mute = 0;
5104 else
5105 new_level = level == 0 ? 0 : level - 1;
5106 } else if (sscanf(cmd, "level %d", &new_level) == 1 &&
5107 new_level >= 0 && new_level <= 15) {
5108 /* new_level set */
5109 } else if (strlencmp(cmd, "mute") == 0) {
5110 new_mute = 0x40;
1da177e4
LT		 5111 } else
5112 return -EINVAL;
5113
35ff8b9f
HMH		 5114 if (new_level != level) {
5115 /* mute doesn't change */
5116
5117 cmos_cmd = (new_level > level) ?
5118 TP_CMOS_VOLUME_UP : TP_CMOS_VOLUME_DOWN;
78f81cc4
BD		 5119 inc = new_level > level ? 1 : -1;
5120
c9bea99c 5121 if (mute && (issue_thinkpad_cmos_command(cmos_cmd) ||
78f81cc4
BD		 5122 !acpi_ec_write(volume_offset, level)))
5123 return -EIO;
5124
5125 for (i = level; i != new_level; i += inc)
c9bea99c 5126 if (issue_thinkpad_cmos_command(cmos_cmd) ||
78f81cc4
BD		 5127 !acpi_ec_write(volume_offset, i + inc))
5128 return -EIO;
5129
35ff8b9f
HMH		 5130 if (mute &&
5131 (issue_thinkpad_cmos_command(TP_CMOS_VOLUME_MUTE) ||
5132 !acpi_ec_write(volume_offset, new_level + mute))) {
78f81cc4 5133 return -EIO;
35ff8b9f 5134 }
78f81cc4
BD		 5135 }
5136
35ff8b9f
HMH		 5137 if (new_mute != mute) {
5138 /* level doesn't change */
5139
5140 cmos_cmd = (new_mute) ?
5141 TP_CMOS_VOLUME_MUTE : TP_CMOS_VOLUME_UP;
78f81cc4 5142
c9bea99c 5143 if (issue_thinkpad_cmos_command(cmos_cmd) ||
78f81cc4
BD		 5144 !acpi_ec_write(volume_offset, level + new_mute))
5145 return -EIO;
5146 }
5147 }
5148
5149 return 0;
5150}
5151
a5763f22
HMH		 5152static struct ibm_struct volume_driver_data = {
5153 .name = "volume",
5154 .read = volume_read,
5155 .write = volume_write,
5156};
56b6aeb0
HMH		 5157
5158/*************************************************************************
5159 * Fan subdriver
5160 */
5161
5162/*
5163 * FAN ACCESS MODES
5164 *
efa27145 5165 * TPACPI_FAN_RD_ACPI_GFAN:
56b6aeb0
HMH		 5166 * ACPI GFAN method: returns fan level
5167 *
efa27145 5168 * see TPACPI_FAN_WR_ACPI_SFAN
f51d1a39 5169 * EC 0x2f (HFSP) not available if GFAN exists
56b6aeb0 5170 *
efa27145 5171 * TPACPI_FAN_WR_ACPI_SFAN:
56b6aeb0
HMH		 5172 * ACPI SFAN method: sets fan level, 0 (stop) to 7 (max)
5173 *
f51d1a39
HMH		 5174 * EC 0x2f (HFSP) might be available *for reading*, but do not use
5175 * it for writing.
56b6aeb0 5176 *
efa27145 5177 * TPACPI_FAN_WR_TPEC:
f51d1a39
HMH		 5178 * ThinkPad EC register 0x2f (HFSP): fan control loop mode
5179 * Supported on almost all ThinkPads
56b6aeb0
HMH		 5180 *
5181 * Fan speed changes of any sort (including those caused by the
5182 * disengaged mode) are usually done slowly by the firmware as the
5183 * maximum ammount of fan duty cycle change per second seems to be
5184 * limited.
5185 *
5186 * Reading is not available if GFAN exists.
5187 * Writing is not available if SFAN exists.
5188 *
5189 * Bits
5190 * 7 automatic mode engaged;
5191 * (default operation mode of the ThinkPad)
5192 * fan level is ignored in this mode.
f51d1a39 5193 * 6 full speed mode (takes precedence over bit 7);
56b6aeb0 5194 * not available on all thinkpads. May disable
f51d1a39
HMH		 5195 * the tachometer while the fan controller ramps up
5196 * the speed (which can take up to a few *minutes*).
5197 * Speeds up fan to 100% duty-cycle, which is far above
5198 * the standard RPM levels. It is not impossible that
5199 * it could cause hardware damage.
56b6aeb0
HMH		 5200 * 5-3 unused in some models. Extra bits for fan level
5201 * in others, but still useless as all values above
5202 * 7 map to the same speed as level 7 in these models.
5203 * 2-0 fan level (0..7 usually)
5204 * 0x00 = stop
5205 * 0x07 = max (set when temperatures critical)
5206 * Some ThinkPads may have other levels, see
efa27145 5207 * TPACPI_FAN_WR_ACPI_FANS (X31/X40/X41)
56b6aeb0
HMH		 5208 *
5209 * FIRMWARE BUG: on some models, EC 0x2f might not be initialized at
5210 * boot. Apparently the EC does not intialize it, so unless ACPI DSDT
5211 * does so, its initial value is meaningless (0x07).
5212 *
5213 * For firmware bugs, refer to:
5214 * http://thinkwiki.org/wiki/Embedded_Controller_Firmware#Firmware_Issues
5215 *
5216 * ----
5217 *
5218 * ThinkPad EC register 0x84 (LSB), 0x85 (MSB):
5219 * Main fan tachometer reading (in RPM)
5220 *
5221 * This register is present on all ThinkPads with a new-style EC, and
5222 * it is known not to be present on the A21m/e, and T22, as there is
5223 * something else in offset 0x84 according to the ACPI DSDT. Other
5224 * ThinkPads from this same time period (and earlier) probably lack the
5225 * tachometer as well.
5226 *
5227 * Unfortunately a lot of ThinkPads with new-style ECs but whose firwmare
5228 * was never fixed by IBM to report the EC firmware version string
5229 * probably support the tachometer (like the early X models), so
5230 * detecting it is quite hard. We need more data to know for sure.
5231 *
5232 * FIRMWARE BUG: always read 0x84 first, otherwise incorrect readings
5233 * might result.
5234 *
f51d1a39
HMH		 5235 * FIRMWARE BUG: may go stale while the EC is switching to full speed
5236 * mode.
56b6aeb0
HMH		 5237 *
5238 * For firmware bugs, refer to:
5239 * http://thinkwiki.org/wiki/Embedded_Controller_Firmware#Firmware_Issues
5240 *
efa27145 5241 * TPACPI_FAN_WR_ACPI_FANS:
56b6aeb0
HMH		 5242 * ThinkPad X31, X40, X41. Not available in the X60.
5243 *
5244 * FANS ACPI handle: takes three arguments: low speed, medium speed,
5245 * high speed. ACPI DSDT seems to map these three speeds to levels
5246 * as follows: STOP LOW LOW MED MED HIGH HIGH HIGH HIGH
5247 * (this map is stored on FAN0..FAN8 as "0,1,1,2,2,3,3,3,3")
5248 *
5249 * The speeds are stored on handles
5250 * (FANA:FAN9), (FANC:FANB), (FANE:FAND).
5251 *
5252 * There are three default speed sets, acessible as handles:
5253 * FS1L,FS1M,FS1H; FS2L,FS2M,FS2H; FS3L,FS3M,FS3H
5254 *
5255 * ACPI DSDT switches which set is in use depending on various
5256 * factors.
5257 *
efa27145 5258 * TPACPI_FAN_WR_TPEC is also available and should be used to
56b6aeb0
HMH		 5259 * command the fan. The X31/X40/X41 seems to have 8 fan levels,
5260 * but the ACPI tables just mention level 7.
5261 */
5262
f74a27d4
HMH		 5263enum { /* Fan control constants */
5264 fan_status_offset = 0x2f, /* EC register 0x2f */
5265 fan_rpm_offset = 0x84, /* EC register 0x84: LSB, 0x85 MSB (RPM)
5266 * 0x84 must be read before 0x85 */
5267
5268 TP_EC_FAN_FULLSPEED = 0x40, /* EC fan mode: full speed */
5269 TP_EC_FAN_AUTO = 0x80, /* EC fan mode: auto fan control */
5270
5271 TPACPI_FAN_LAST_LEVEL = 0x100, /* Use cached last-seen fan level */
5272};
5273
5274enum fan_status_access_mode {
5275 TPACPI_FAN_NONE = 0, /* No fan status or control */
5276 TPACPI_FAN_RD_ACPI_GFAN, /* Use ACPI GFAN */
5277 TPACPI_FAN_RD_TPEC, /* Use ACPI EC regs 0x2f, 0x84-0x85 */
5278};
5279
5280enum fan_control_access_mode {
5281 TPACPI_FAN_WR_NONE = 0, /* No fan control */
5282 TPACPI_FAN_WR_ACPI_SFAN, /* Use ACPI SFAN */
5283 TPACPI_FAN_WR_TPEC, /* Use ACPI EC reg 0x2f */
5284 TPACPI_FAN_WR_ACPI_FANS, /* Use ACPI FANS and EC reg 0x2f */
5285};
5286
5287enum fan_control_commands {
5288 TPACPI_FAN_CMD_SPEED = 0x0001, /* speed command */
5289 TPACPI_FAN_CMD_LEVEL = 0x0002, /* level command */
5290 TPACPI_FAN_CMD_ENABLE = 0x0004, /* enable/disable cmd,
5291 * and also watchdog cmd */
5292};
5293
5294static int fan_control_allowed;
5295
69ba91cb
HMH		 5296static enum fan_status_access_mode fan_status_access_mode;
5297static enum fan_control_access_mode fan_control_access_mode;
5298static enum fan_control_commands fan_control_commands;
78f81cc4 5299
778b4d74 5300static u8 fan_control_initial_status;
fe98a52c 5301static u8 fan_control_desired_level;
f74a27d4
HMH		 5302static int fan_watchdog_maxinterval;
5303
5304static struct mutex fan_mutex;
778b4d74 5305
25c68a33 5306static void fan_watchdog_fire(struct work_struct *ignored);
25c68a33 5307static DECLARE_DELAYED_WORK(fan_watchdog_task, fan_watchdog_fire);
16663a87 5308
e0c7dfe7
HMH		 5309TPACPI_HANDLE(fans, ec, "FANS"); /* X31, X40, X41 */
5310TPACPI_HANDLE(gfan, ec, "GFAN", /* 570 */
56b6aeb0
HMH		 5311 "\\FSPD", /* 600e/x, 770e, 770x */
5312 ); /* all others */
e0c7dfe7 5313TPACPI_HANDLE(sfan, ec, "SFAN", /* 570 */
56b6aeb0
HMH		 5314 "JFNS", /* 770x-JL */
5315 ); /* all others */
5316
fe98a52c 5317/*
b21a15f6 5318 * Call with fan_mutex held
fe98a52c 5319 */
b21a15f6 5320static void fan_update_desired_level(u8 status)
fe98a52c 5321{
b21a15f6
HMH		 5322 if ((status &
5323 (TP_EC_FAN_AUTO | TP_EC_FAN_FULLSPEED)) == 0) {
5324 if (status > 7)
5325 fan_control_desired_level = 7;
5326 else
5327 fan_control_desired_level = status;
5328 }
5329}
fe98a52c 5330
b21a15f6
HMH		 5331static int fan_get_status(u8 *status)
5332{
5333 u8 s;
fe98a52c 5334
b21a15f6
HMH		 5335 /* TODO:
5336 * Add TPACPI_FAN_RD_ACPI_FANS ? */
fe98a52c 5337
b21a15f6
HMH		 5338 switch (fan_status_access_mode) {
5339 case TPACPI_FAN_RD_ACPI_GFAN:
5340 /* 570, 600e/x, 770e, 770x */
fe98a52c 5341
b21a15f6
HMH		 5342 if (unlikely(!acpi_evalf(gfan_handle, &s, NULL, "d")))
5343 return -EIO;
fe98a52c 5344
b21a15f6
HMH		 5345 if (likely(status))
5346 *status = s & 0x07;
fe98a52c 5347
b21a15f6
HMH		 5348 break;
5349
5350 case TPACPI_FAN_RD_TPEC:
5351 /* all except 570, 600e/x, 770e, 770x */
5352 if (unlikely(!acpi_ec_read(fan_status_offset, &s)))
5353 return -EIO;
5354
5355 if (likely(status))
5356 *status = s;
fe98a52c 5357
fe98a52c 5358 break;
b21a15f6 5359
fe98a52c 5360 default:
b21a15f6 5361 return -ENXIO;
fe98a52c
HMH		 5362 }
5363
b21a15f6
HMH		 5364 return 0;
5365}
fe98a52c 5366
b21a15f6
HMH		 5367static int fan_get_status_safe(u8 *status)
5368{
5369 int rc;
5370 u8 s;
fe98a52c 5371
b21a15f6
HMH		 5372 if (mutex_lock_interruptible(&fan_mutex))
5373 return -ERESTARTSYS;
5374 rc = fan_get_status(&s);
5375 if (!rc)
5376 fan_update_desired_level(s);
5377 mutex_unlock(&fan_mutex);
fe98a52c 5378
b21a15f6
HMH		 5379 if (status)
5380 *status = s;
fe98a52c 5381
b21a15f6
HMH		 5382 return rc;
5383}
5384
5385static int fan_get_speed(unsigned int *speed)
fe98a52c 5386{
b21a15f6 5387 u8 hi, lo;
fe98a52c 5388
b21a15f6
HMH		 5389 switch (fan_status_access_mode) {
5390 case TPACPI_FAN_RD_TPEC:
5391 /* all except 570, 600e/x, 770e, 770x */
5392 if (unlikely(!acpi_ec_read(fan_rpm_offset, &lo) ||
5393 !acpi_ec_read(fan_rpm_offset + 1, &hi)))
5394 return -EIO;
fe98a52c 5395
b21a15f6
HMH		 5396 if (likely(speed))
5397 *speed = (hi << 8) | lo;
fe98a52c 5398
b21a15f6 5399 break;
fe98a52c 5400
b21a15f6
HMH		 5401 default:
5402 return -ENXIO;
5403 }
fe98a52c 5404
b21a15f6 5405 return 0;
fe98a52c
HMH		 5406}
5407
b21a15f6 5408static int fan_set_level(int level)
fe98a52c 5409{
b21a15f6
HMH		 5410 if (!fan_control_allowed)
5411 return -EPERM;
fe98a52c 5412
b21a15f6
HMH		 5413 switch (fan_control_access_mode) {
5414 case TPACPI_FAN_WR_ACPI_SFAN:
5415 if (level >= 0 && level <= 7) {
5416 if (!acpi_evalf(sfan_handle, NULL, NULL, "vd", level))
5417 return -EIO;
5418 } else
5419 return -EINVAL;
5420 break;
fe98a52c 5421
b21a15f6
HMH		 5422 case TPACPI_FAN_WR_ACPI_FANS:
5423 case TPACPI_FAN_WR_TPEC:
5424 if ((level != TP_EC_FAN_AUTO) &&
5425 (level != TP_EC_FAN_FULLSPEED) &&
5426 ((level < 0) || (level > 7)))
5427 return -EINVAL;
fe98a52c 5428
b21a15f6
HMH		 5429 /* safety net should the EC not support AUTO
5430 * or FULLSPEED mode bits and just ignore them */
5431 if (level & TP_EC_FAN_FULLSPEED)
5432 level |= 7; /* safety min speed 7 */
547266e4 5433 else if (level & TP_EC_FAN_AUTO)
b21a15f6 5434 level |= 4; /* safety min speed 4 */
fe98a52c 5435
b21a15f6
HMH		 5436 if (!acpi_ec_write(fan_status_offset, level))
5437 return -EIO;
5438 else
5439 tp_features.fan_ctrl_status_undef = 0;
5440 break;
fe98a52c 5441
b21a15f6
HMH		 5442 default:
5443 return -ENXIO;
5444 }
5445 return 0;
fe98a52c
HMH		 5446}
5447
b21a15f6 5448static int fan_set_level_safe(int level)
fe98a52c 5449{
b21a15f6 5450 int rc;
fe98a52c 5451
b21a15f6
HMH		 5452 if (!fan_control_allowed)
5453 return -EPERM;
fe98a52c 5454
b21a15f6
HMH		 5455 if (mutex_lock_interruptible(&fan_mutex))
5456 return -ERESTARTSYS;
fe98a52c 5457
b21a15f6
HMH		 5458 if (level == TPACPI_FAN_LAST_LEVEL)
5459 level = fan_control_desired_level;
fe98a52c 5460
b21a15f6
HMH		 5461 rc = fan_set_level(level);
5462 if (!rc)
5463 fan_update_desired_level(level);
5464
5465 mutex_unlock(&fan_mutex);
5466 return rc;
fe98a52c
HMH		 5467}
5468
b21a15f6 5469static int fan_set_enable(void)
fe98a52c 5470{
b21a15f6
HMH		 5471 u8 s;
5472 int rc;
fe98a52c 5473
ecf2a80a
HMH		 5474 if (!fan_control_allowed)
5475 return -EPERM;
5476
b21a15f6
HMH		 5477 if (mutex_lock_interruptible(&fan_mutex))
5478 return -ERESTARTSYS;
fe98a52c 5479
b21a15f6
HMH		 5480 switch (fan_control_access_mode) {
5481 case TPACPI_FAN_WR_ACPI_FANS:
5482 case TPACPI_FAN_WR_TPEC:
5483 rc = fan_get_status(&s);
5484 if (rc < 0)
5485 break;
fe98a52c 5486
b21a15f6
HMH		 5487 /* Don't go out of emergency fan mode */
5488 if (s != 7) {
5489 s &= 0x07;
5490 s |= TP_EC_FAN_AUTO | 4; /* min fan speed 4 */
5491 }
fe98a52c 5492
b21a15f6
HMH		 5493 if (!acpi_ec_write(fan_status_offset, s))
5494 rc = -EIO;
5495 else {
5496 tp_features.fan_ctrl_status_undef = 0;
5497 rc = 0;
5498 }
5499 break;
fe98a52c 5500
b21a15f6
HMH		 5501 case TPACPI_FAN_WR_ACPI_SFAN:
5502 rc = fan_get_status(&s);
5503 if (rc < 0)
5504 break;
fe98a52c 5505
b21a15f6 5506 s &= 0x07;
fe98a52c 5507
b21a15f6
HMH		 5508 /* Set fan to at least level 4 */
5509 s |= 4;
fe08bc4b 5510
b21a15f6 5511 if (!acpi_evalf(sfan_handle, NULL, NULL, "vd", s))
35ff8b9f 5512 rc = -EIO;
b21a15f6
HMH		 5513 else
5514 rc = 0;
5515 break;
78f81cc4 5516
b21a15f6
HMH		 5517 default:
5518 rc = -ENXIO;
5519 }
5fba344c 5520
b21a15f6
HMH		 5521 mutex_unlock(&fan_mutex);
5522 return rc;
69ba91cb 5523}
78f81cc4 5524
b21a15f6 5525static int fan_set_disable(void)
78f81cc4 5526{
b21a15f6 5527 int rc;
c52f0aa5 5528
b21a15f6
HMH		 5529 if (!fan_control_allowed)
5530 return -EPERM;
78f81cc4 5531
b21a15f6
HMH		 5532 if (mutex_lock_interruptible(&fan_mutex))
5533 return -ERESTARTSYS;
3ef8a609 5534
b21a15f6
HMH		 5535 rc = 0;
5536 switch (fan_control_access_mode) {
5537 case TPACPI_FAN_WR_ACPI_FANS:
5538 case TPACPI_FAN_WR_TPEC:
5539 if (!acpi_ec_write(fan_status_offset, 0x00))
5540 rc = -EIO;
5541 else {
5542 fan_control_desired_level = 0;
5543 tp_features.fan_ctrl_status_undef = 0;
5544 }
3ef8a609
HMH		 5545 break;
5546
b21a15f6
HMH		 5547 case TPACPI_FAN_WR_ACPI_SFAN:
5548 if (!acpi_evalf(sfan_handle, NULL, NULL, "vd", 0x00))
5549 rc = -EIO;
5550 else
5551 fan_control_desired_level = 0;
c52f0aa5
HMH		 5552 break;
5553
5554 default:
b21a15f6 5555 rc = -ENXIO;
78f81cc4
BD		 5556 }
5557
fe98a52c 5558
fe98a52c 5559 mutex_unlock(&fan_mutex);
fe98a52c
HMH		 5560 return rc;
5561}
5562
b21a15f6 5563static int fan_set_speed(int speed)
c52f0aa5 5564{
b21a15f6 5565 int rc;
c52f0aa5 5566
b21a15f6
HMH		 5567 if (!fan_control_allowed)
5568 return -EPERM;
3ef8a609 5569
b21a15f6
HMH		 5570 if (mutex_lock_interruptible(&fan_mutex))
5571 return -ERESTARTSYS;
c52f0aa5 5572
b21a15f6
HMH		 5573 rc = 0;
5574 switch (fan_control_access_mode) {
5575 case TPACPI_FAN_WR_ACPI_FANS:
5576 if (speed >= 0 && speed <= 65535) {
5577 if (!acpi_evalf(fans_handle, NULL, NULL, "vddd",
5578 speed, speed, speed))
5579 rc = -EIO;
5580 } else
5581 rc = -EINVAL;
c52f0aa5
HMH		 5582 break;
5583
5584 default:
b21a15f6 5585 rc = -ENXIO;
c52f0aa5
HMH		 5586 }
5587
b21a15f6
HMH		 5588 mutex_unlock(&fan_mutex);
5589 return rc;
16663a87
HMH		 5590}
5591
5592static void fan_watchdog_reset(void)
5593{
94954cc6 5594 static int fan_watchdog_active;
16663a87 5595
4985cd0a
HMH		 5596 if (fan_control_access_mode == TPACPI_FAN_WR_NONE)
5597 return;
5598
16663a87
HMH		 5599 if (fan_watchdog_active)
5600 cancel_delayed_work(&fan_watchdog_task);
5601
8fef502e
HMH		 5602 if (fan_watchdog_maxinterval > 0 &&
5603 tpacpi_lifecycle != TPACPI_LIFE_EXITING) {
16663a87 5604 fan_watchdog_active = 1;
e0e3c061 5605 if (!queue_delayed_work(tpacpi_wq, &fan_watchdog_task,
16663a87
HMH		 5606 msecs_to_jiffies(fan_watchdog_maxinterval
5607 * 1000))) {
35ff8b9f 5608 printk(TPACPI_ERR
e0e3c061 5609 "failed to queue the fan watchdog, "
16663a87
HMH		 5610 "watchdog will not trigger\n");
5611 }
5612 } else
5613 fan_watchdog_active = 0;
5614}
5615
b21a15f6 5616static void fan_watchdog_fire(struct work_struct *ignored)
78f81cc4 5617{
b21a15f6 5618 int rc;
18ad7996 5619
b21a15f6
HMH		 5620 if (tpacpi_lifecycle != TPACPI_LIFE_RUNNING)
5621 return;
a12095c2 5622
e0c7dfe7 5623 printk(TPACPI_NOTICE "fan watchdog: enabling fan\n");
b21a15f6
HMH		 5624 rc = fan_set_enable();
5625 if (rc < 0) {
e0c7dfe7 5626 printk(TPACPI_ERR "fan watchdog: error %d while enabling fan, "
b21a15f6
HMH		 5627 "will try again later...\n", -rc);
5628 /* reschedule for later */
5629 fan_watchdog_reset();
5630 }
5631}
eaa7571b 5632
b21a15f6
HMH		 5633/*
5634 * SYSFS fan layout: hwmon compatible (device)
5635 *
5636 * pwm*_enable:
5637 * 0: "disengaged" mode
5638 * 1: manual mode
5639 * 2: native EC "auto" mode (recommended, hardware default)
5640 *
5641 * pwm*: set speed in manual mode, ignored otherwise.
5642 * 0 is level 0; 255 is level 7. Intermediate points done with linear
5643 * interpolation.
5644 *
5645 * fan*_input: tachometer reading, RPM
5646 *
5647 *
5648 * SYSFS fan layout: extensions
5649 *
5650 * fan_watchdog (driver):
5651 * fan watchdog interval in seconds, 0 disables (default), max 120
5652 */
5653
5654/* sysfs fan pwm1_enable ----------------------------------------------- */
5655static ssize_t fan_pwm1_enable_show(struct device *dev,
5656 struct device_attribute *attr,
5657 char *buf)
5658{
5659 int res, mode;
5660 u8 status;
5661
5662 res = fan_get_status_safe(&status);
5663 if (res)
5664 return res;
5665
5666 if (unlikely(tp_features.fan_ctrl_status_undef)) {
5667 if (status != fan_control_initial_status) {
d8fd94d9 5668 tp_features.fan_ctrl_status_undef = 0;
b21a15f6
HMH		 5669 } else {
5670 /* Return most likely status. In fact, it
5671 * might be the only possible status */
5672 status = TP_EC_FAN_AUTO;
5673 }
5674 }
5675
5676 if (status & TP_EC_FAN_FULLSPEED) {
5677 mode = 0;
5678 } else if (status & TP_EC_FAN_AUTO) {
5679 mode = 2;
5680 } else
5681 mode = 1;
5682
5683 return snprintf(buf, PAGE_SIZE, "%d\n", mode);
5684}
a12095c2 5685
b21a15f6
HMH		 5686static ssize_t fan_pwm1_enable_store(struct device *dev,
5687 struct device_attribute *attr,
5688 const char *buf, size_t count)
5689{
5690 unsigned long t;
5691 int res, level;
5692
5693 if (parse_strtoul(buf, 2, &t))
5694 return -EINVAL;
5695
5696 switch (t) {
5697 case 0:
5698 level = TP_EC_FAN_FULLSPEED;
5699 break;
5700 case 1:
5701 level = TPACPI_FAN_LAST_LEVEL;
5702 break;
5703 case 2:
5704 level = TP_EC_FAN_AUTO;
5705 break;
5706 case 3:
5707 /* reserved for software-controlled auto mode */
5708 return -ENOSYS;
18ad7996 5709 default:
b21a15f6 5710 return -EINVAL;
18ad7996 5711 }
b21a15f6
HMH		 5712
5713 res = fan_set_level_safe(level);
5714 if (res == -ENXIO)
5715 return -EINVAL;
5716 else if (res < 0)
5717 return res;
5718
5719 fan_watchdog_reset();
5720
5721 return count;
18ad7996
HMH		 5722}
5723
b21a15f6
HMH		 5724static struct device_attribute dev_attr_fan_pwm1_enable =
5725 __ATTR(pwm1_enable, S_IWUSR | S_IRUGO,
5726 fan_pwm1_enable_show, fan_pwm1_enable_store);
5727
5728/* sysfs fan pwm1 ------------------------------------------------------ */
5729static ssize_t fan_pwm1_show(struct device *dev,
5730 struct device_attribute *attr,
5731 char *buf)
fe98a52c 5732{
b21a15f6
HMH		 5733 int res;
5734 u8 status;
fe98a52c 5735
b21a15f6
HMH		 5736 res = fan_get_status_safe(&status);
5737 if (res)
5738 return res;
ecf2a80a 5739
b21a15f6
HMH		 5740 if (unlikely(tp_features.fan_ctrl_status_undef)) {
5741 if (status != fan_control_initial_status) {
5742 tp_features.fan_ctrl_status_undef = 0;
5743 } else {
5744 status = TP_EC_FAN_AUTO;
5745 }
5746 }
fe98a52c 5747
b21a15f6
HMH		 5748 if ((status &
5749 (TP_EC_FAN_AUTO | TP_EC_FAN_FULLSPEED)) != 0)
5750 status = fan_control_desired_level;
fe98a52c 5751
b21a15f6
HMH		 5752 if (status > 7)
5753 status = 7;
fe98a52c 5754
b21a15f6 5755 return snprintf(buf, PAGE_SIZE, "%u\n", (status * 255) / 7);
fe98a52c
HMH		 5756}
5757
b21a15f6
HMH		 5758static ssize_t fan_pwm1_store(struct device *dev,
5759 struct device_attribute *attr,
5760 const char *buf, size_t count)
18ad7996 5761{
b21a15f6 5762 unsigned long s;
1c6a334e 5763 int rc;
b21a15f6 5764 u8 status, newlevel;
1c6a334e 5765
b21a15f6
HMH		 5766 if (parse_strtoul(buf, 255, &s))
5767 return -EINVAL;
5768
5769 /* scale down from 0-255 to 0-7 */
5770 newlevel = (s >> 5) & 0x07;
ecf2a80a 5771
fc589a3c
HMH		 5772 if (mutex_lock_interruptible(&fan_mutex))
5773 return -ERESTARTSYS;
40ca9fdf 5774
b21a15f6
HMH		 5775 rc = fan_get_status(&status);
5776 if (!rc && (status &
5777 (TP_EC_FAN_AUTO | TP_EC_FAN_FULLSPEED)) == 0) {
5778 rc = fan_set_level(newlevel);
5779 if (rc == -ENXIO)
5780 rc = -EINVAL;
5781 else if (!rc) {
5782 fan_update_desired_level(newlevel);
5783 fan_watchdog_reset();
eaa7571b 5784 }
b21a15f6 5785 }
1c6a334e 5786
b21a15f6
HMH		 5787 mutex_unlock(&fan_mutex);
5788 return (rc)? rc : count;
5789}
1c6a334e 5790
b21a15f6
HMH		 5791static struct device_attribute dev_attr_fan_pwm1 =
5792 __ATTR(pwm1, S_IWUSR | S_IRUGO,
5793 fan_pwm1_show, fan_pwm1_store);
1c6a334e 5794
b21a15f6
HMH		 5795/* sysfs fan fan1_input ------------------------------------------------ */
5796static ssize_t fan_fan1_input_show(struct device *dev,
5797 struct device_attribute *attr,
5798 char *buf)
5799{
5800 int res;
5801 unsigned int speed;
1c6a334e 5802
b21a15f6
HMH		 5803 res = fan_get_speed(&speed);
5804 if (res < 0)
5805 return res;
1c6a334e 5806
b21a15f6
HMH		 5807 return snprintf(buf, PAGE_SIZE, "%u\n", speed);
5808}
18ad7996 5809
b21a15f6
HMH		 5810static struct device_attribute dev_attr_fan_fan1_input =
5811 __ATTR(fan1_input, S_IRUGO,
5812 fan_fan1_input_show, NULL);
40ca9fdf 5813
b21a15f6
HMH		 5814/* sysfs fan fan_watchdog (hwmon driver) ------------------------------- */
5815static ssize_t fan_fan_watchdog_show(struct device_driver *drv,
5816 char *buf)
5817{
5818 return snprintf(buf, PAGE_SIZE, "%u\n", fan_watchdog_maxinterval);
18ad7996
HMH		 5819}
5820
b21a15f6
HMH		 5821static ssize_t fan_fan_watchdog_store(struct device_driver *drv,
5822 const char *buf, size_t count)
18ad7996 5823{
b21a15f6
HMH		 5824 unsigned long t;
5825
5826 if (parse_strtoul(buf, 120, &t))
5827 return -EINVAL;
40ca9fdf 5828
ecf2a80a
HMH		 5829 if (!fan_control_allowed)
5830 return -EPERM;
5831
b21a15f6
HMH		 5832 fan_watchdog_maxinterval = t;
5833 fan_watchdog_reset();
40ca9fdf 5834
b21a15f6
HMH		 5835 return count;
5836}
5837
5838static DRIVER_ATTR(fan_watchdog, S_IWUSR | S_IRUGO,
5839 fan_fan_watchdog_show, fan_fan_watchdog_store);
5840
5841/* --------------------------------------------------------------------- */
5842static struct attribute *fan_attributes[] = {
5843 &dev_attr_fan_pwm1_enable.attr, &dev_attr_fan_pwm1.attr,
5844 &dev_attr_fan_fan1_input.attr,
5845 NULL
5846};
5847
5848static const struct attribute_group fan_attr_group = {
5849 .attrs = fan_attributes,
5850};
5851
5852static int __init fan_init(struct ibm_init_struct *iibm)
5853{
5854 int rc;
5855
5856 vdbg_printk(TPACPI_DBG_INIT, "initializing fan subdriver\n");
5857
5858 mutex_init(&fan_mutex);
5859 fan_status_access_mode = TPACPI_FAN_NONE;
5860 fan_control_access_mode = TPACPI_FAN_WR_NONE;
5861 fan_control_commands = 0;
5862 fan_watchdog_maxinterval = 0;
5863 tp_features.fan_ctrl_status_undef = 0;
5864 fan_control_desired_level = 7;
5865
e0c7dfe7
HMH		 5866 TPACPI_ACPIHANDLE_INIT(fans);
5867 TPACPI_ACPIHANDLE_INIT(gfan);
5868 TPACPI_ACPIHANDLE_INIT(sfan);
b21a15f6
HMH		 5869
5870 if (gfan_handle) {
5871 /* 570, 600e/x, 770e, 770x */
5872 fan_status_access_mode = TPACPI_FAN_RD_ACPI_GFAN;
5873 } else {
5874 /* all other ThinkPads: note that even old-style
5875 * ThinkPad ECs supports the fan control register */
5876 if (likely(acpi_ec_read(fan_status_offset,
5877 &fan_control_initial_status))) {
5878 fan_status_access_mode = TPACPI_FAN_RD_TPEC;
5879
5880 /* In some ThinkPads, neither the EC nor the ACPI
5881 * DSDT initialize the fan status, and it ends up
5882 * being set to 0x07 when it *could* be either
5883 * 0x07 or 0x80.
5884 *
5885 * Enable for TP-1Y (T43), TP-78 (R51e),
5886 * TP-76 (R52), TP-70 (T43, R52), which are known
5887 * to be buggy. */
5888 if (fan_control_initial_status == 0x07) {
5889 switch (thinkpad_id.ec_model) {
5890 case 0x5931: /* TP-1Y */
5891 case 0x3837: /* TP-78 */
5892 case 0x3637: /* TP-76 */
5893 case 0x3037: /* TP-70 */
e0c7dfe7 5894 printk(TPACPI_NOTICE
35ff8b9f
HMH		 5895 "fan_init: initial fan status "
5896 "is unknown, assuming it is "
5897 "in auto mode\n");
b21a15f6
HMH		 5898 tp_features.fan_ctrl_status_undef = 1;
5899 ;;
5900 }
5901 }
5902 } else {
e0c7dfe7 5903 printk(TPACPI_ERR
b21a15f6
HMH		 5904 "ThinkPad ACPI EC access misbehaving, "
5905 "fan status and control unavailable\n");
5906 return 1;
5907 }
5908 }
5909
5910 if (sfan_handle) {
5911 /* 570, 770x-JL */
5912 fan_control_access_mode = TPACPI_FAN_WR_ACPI_SFAN;
5913 fan_control_commands |=
5914 TPACPI_FAN_CMD_LEVEL | TPACPI_FAN_CMD_ENABLE;
5915 } else {
5916 if (!gfan_handle) {
5917 /* gfan without sfan means no fan control */
5918 /* all other models implement TP EC 0x2f control */
5919
5920 if (fans_handle) {
5921 /* X31, X40, X41 */
5922 fan_control_access_mode =
5923 TPACPI_FAN_WR_ACPI_FANS;
5924 fan_control_commands |=
5925 TPACPI_FAN_CMD_SPEED |
5926 TPACPI_FAN_CMD_LEVEL |
5927 TPACPI_FAN_CMD_ENABLE;
5928 } else {
5929 fan_control_access_mode = TPACPI_FAN_WR_TPEC;
5930 fan_control_commands |=
5931 TPACPI_FAN_CMD_LEVEL |
5932 TPACPI_FAN_CMD_ENABLE;
5933 }
fe98a52c 5934 }
b21a15f6 5935 }
18ad7996 5936
b21a15f6
HMH		 5937 vdbg_printk(TPACPI_DBG_INIT, "fan is %s, modes %d, %d\n",
5938 str_supported(fan_status_access_mode != TPACPI_FAN_NONE ||
5939 fan_control_access_mode != TPACPI_FAN_WR_NONE),
5940 fan_status_access_mode, fan_control_access_mode);
1c6a334e 5941
b21a15f6
HMH		 5942 /* fan control master switch */
5943 if (!fan_control_allowed) {
5944 fan_control_access_mode = TPACPI_FAN_WR_NONE;
5945 fan_control_commands = 0;
5946 dbg_printk(TPACPI_DBG_INIT,
5947 "fan control features disabled by parameter\n");
18ad7996 5948 }
40ca9fdf 5949
b21a15f6
HMH		 5950 /* update fan_control_desired_level */
5951 if (fan_status_access_mode != TPACPI_FAN_NONE)
5952 fan_get_status_safe(NULL);
fe98a52c 5953
b21a15f6
HMH		 5954 if (fan_status_access_mode != TPACPI_FAN_NONE ||
5955 fan_control_access_mode != TPACPI_FAN_WR_NONE) {
5956 rc = sysfs_create_group(&tpacpi_sensors_pdev->dev.kobj,
5957 &fan_attr_group);
b21a15f6
HMH		 5958 if (rc < 0)
5959 return rc;
9c0a76e1
HMH		 5960
5961 rc = driver_create_file(&tpacpi_hwmon_pdriver.driver,
5962 &driver_attr_fan_watchdog);
5963 if (rc < 0) {
5964 sysfs_remove_group(&tpacpi_sensors_pdev->dev.kobj,
5965 &fan_attr_group);
5966 return rc;
5967 }
b21a15f6
HMH		 5968 return 0;
5969 } else
5970 return 1;
56b6aeb0
HMH		 5971}
5972
b21a15f6 5973static void fan_exit(void)
56b6aeb0 5974{
35ff8b9f
HMH		 5975 vdbg_printk(TPACPI_DBG_EXIT,
5976 "cancelling any pending fan watchdog tasks\n");
56b6aeb0 5977
b21a15f6
HMH		 5978 /* FIXME: can we really do this unconditionally? */
5979 sysfs_remove_group(&tpacpi_sensors_pdev->dev.kobj, &fan_attr_group);
35ff8b9f
HMH		 5980 driver_remove_file(&tpacpi_hwmon_pdriver.driver,
5981 &driver_attr_fan_watchdog);
40ca9fdf 5982
b21a15f6 5983 cancel_delayed_work(&fan_watchdog_task);
e0e3c061 5984 flush_workqueue(tpacpi_wq);
56b6aeb0
HMH		 5985}
5986
5987static int fan_read(char *p)
5988{
5989 int len = 0;
5990 int rc;
5991 u8 status;
5992 unsigned int speed = 0;
5993
5994 switch (fan_status_access_mode) {
efa27145 5995 case TPACPI_FAN_RD_ACPI_GFAN:
56b6aeb0 5996 /* 570, 600e/x, 770e, 770x */
35ff8b9f
HMH		 5997 rc = fan_get_status_safe(&status);
5998 if (rc < 0)
56b6aeb0
HMH		 5999 return rc;
6000
6001 len += sprintf(p + len, "status:\t\t%s\n"
6002 "level:\t\t%d\n",
6003 (status != 0) ? "enabled" : "disabled", status);
6004 break;
6005
efa27145 6006 case TPACPI_FAN_RD_TPEC:
56b6aeb0 6007 /* all except 570, 600e/x, 770e, 770x */
35ff8b9f
HMH		 6008 rc = fan_get_status_safe(&status);
6009 if (rc < 0)
56b6aeb0
HMH		 6010 return rc;
6011
d8fd94d9 6012 if (unlikely(tp_features.fan_ctrl_status_undef)) {
56b6aeb0 6013 if (status != fan_control_initial_status)
d8fd94d9 6014 tp_features.fan_ctrl_status_undef = 0;
56b6aeb0
HMH		 6015 else
6016 /* Return most likely status. In fact, it
6017 * might be the only possible status */
efa27145 6018 status = TP_EC_FAN_AUTO;
56b6aeb0
HMH		 6019 }
6020
6021 len += sprintf(p + len, "status:\t\t%s\n",
6022 (status != 0) ? "enabled" : "disabled");
6023
35ff8b9f
HMH		 6024 rc = fan_get_speed(&speed);
6025 if (rc < 0)
56b6aeb0
HMH		 6026 return rc;
6027
6028 len += sprintf(p + len, "speed:\t\t%d\n", speed);
6029
efa27145 6030 if (status & TP_EC_FAN_FULLSPEED)
56b6aeb0
HMH		 6031 /* Disengaged mode takes precedence */
6032 len += sprintf(p + len, "level:\t\tdisengaged\n");
efa27145 6033 else if (status & TP_EC_FAN_AUTO)
56b6aeb0
HMH		 6034 len += sprintf(p + len, "level:\t\tauto\n");
6035 else
6036 len += sprintf(p + len, "level:\t\t%d\n", status);
6037 break;
6038
efa27145 6039 case TPACPI_FAN_NONE:
56b6aeb0
HMH		 6040 default:
6041 len += sprintf(p + len, "status:\t\tnot supported\n");
6042 }
6043
efa27145 6044 if (fan_control_commands & TPACPI_FAN_CMD_LEVEL) {
56b6aeb0
HMH		 6045 len += sprintf(p + len, "commands:\tlevel <level>");
6046
6047 switch (fan_control_access_mode) {
efa27145 6048 case TPACPI_FAN_WR_ACPI_SFAN:
56b6aeb0
HMH		 6049 len += sprintf(p + len, " (<level> is 0-7)\n");
6050 break;
6051
6052 default:
6053 len += sprintf(p + len, " (<level> is 0-7, "
fe98a52c 6054 "auto, disengaged, full-speed)\n");
56b6aeb0
HMH		 6055 break;
6056 }
6057 }
18ad7996 6058
efa27145 6059 if (fan_control_commands & TPACPI_FAN_CMD_ENABLE)
56b6aeb0 6060 len += sprintf(p + len, "commands:\tenable, disable\n"
35ff8b9f
HMH		 6061 "commands:\twatchdog <timeout> (<timeout> "
6062 "is 0 (off), 1-120 (seconds))\n");
1da177e4 6063
efa27145 6064 if (fan_control_commands & TPACPI_FAN_CMD_SPEED)
56b6aeb0
HMH		 6065 len += sprintf(p + len, "commands:\tspeed <speed>"
6066 " (<speed> is 0-65535)\n");
6067
6068 return len;
78f81cc4
BD		 6069}
6070
18ad7996
HMH		 6071static int fan_write_cmd_level(const char *cmd, int *rc)
6072{
6073 int level;
6074
a12095c2 6075 if (strlencmp(cmd, "level auto") == 0)
efa27145 6076 level = TP_EC_FAN_AUTO;
fe98a52c 6077 else if ((strlencmp(cmd, "level disengaged") == 0) |
35ff8b9f 6078 (strlencmp(cmd, "level full-speed") == 0))
efa27145 6079 level = TP_EC_FAN_FULLSPEED;
a12095c2 6080 else if (sscanf(cmd, "level %d", &level) != 1)
18ad7996
HMH		 6081 return 0;
6082
35ff8b9f
HMH		 6083 *rc = fan_set_level_safe(level);
6084 if (*rc == -ENXIO)
e0c7dfe7 6085 printk(TPACPI_ERR "level command accepted for unsupported "
18ad7996
HMH		 6086 "access mode %d", fan_control_access_mode);
6087
6088 return 1;
6089}
6090
6091static int fan_write_cmd_enable(const char *cmd, int *rc)
6092{
6093 if (strlencmp(cmd, "enable") != 0)
6094 return 0;
6095
35ff8b9f
HMH		 6096 *rc = fan_set_enable();
6097 if (*rc == -ENXIO)
e0c7dfe7 6098 printk(TPACPI_ERR "enable command accepted for unsupported "
18ad7996
HMH		 6099 "access mode %d", fan_control_access_mode);
6100
6101 return 1;
6102}
6103
6104static int fan_write_cmd_disable(const char *cmd, int *rc)
6105{
6106 if (strlencmp(cmd, "disable") != 0)
6107 return 0;
6108
35ff8b9f
HMH		 6109 *rc = fan_set_disable();
6110 if (*rc == -ENXIO)
e0c7dfe7 6111 printk(TPACPI_ERR "disable command accepted for unsupported "
18ad7996
HMH		 6112 "access mode %d", fan_control_access_mode);
6113
6114 return 1;
6115}
6116
6117static int fan_write_cmd_speed(const char *cmd, int *rc)
6118{
6119 int speed;
6120
a8b7a662
HMH		 6121 /* TODO:
6122 * Support speed <low> <medium> <high> ? */
6123
18ad7996
HMH		 6124 if (sscanf(cmd, "speed %d", &speed) != 1)
6125 return 0;
6126
35ff8b9f
HMH		 6127 *rc = fan_set_speed(speed);
6128 if (*rc == -ENXIO)
e0c7dfe7 6129 printk(TPACPI_ERR "speed command accepted for unsupported "
18ad7996
HMH		 6130 "access mode %d", fan_control_access_mode);
6131
6132 return 1;
6133}
6134
16663a87
HMH		 6135static int fan_write_cmd_watchdog(const char *cmd, int *rc)
6136{
6137 int interval;
6138
6139 if (sscanf(cmd, "watchdog %d", &interval) != 1)
6140 return 0;
6141
6142 if (interval < 0 || interval > 120)
6143 *rc = -EINVAL;
6144 else
6145 fan_watchdog_maxinterval = interval;
6146
6147 return 1;
6148}
6149
18ad7996
HMH		 6150static int fan_write(char *buf)
6151{
6152 char *cmd;
6153 int rc = 0;
6154
6155 while (!rc && (cmd = next_cmd(&buf))) {
efa27145 6156 if (!((fan_control_commands & TPACPI_FAN_CMD_LEVEL) &&
18ad7996 6157 fan_write_cmd_level(cmd, &rc)) &&
efa27145 6158 !((fan_control_commands & TPACPI_FAN_CMD_ENABLE) &&
18ad7996 6159 (fan_write_cmd_enable(cmd, &rc) ||
16663a87
HMH		 6160 fan_write_cmd_disable(cmd, &rc) ||
6161 fan_write_cmd_watchdog(cmd, &rc))) &&
efa27145 6162 !((fan_control_commands & TPACPI_FAN_CMD_SPEED) &&
18ad7996
HMH		 6163 fan_write_cmd_speed(cmd, &rc))
6164 )
6165 rc = -EINVAL;
16663a87
HMH		 6166 else if (!rc)
6167 fan_watchdog_reset();
18ad7996
HMH		 6168 }
6169
6170 return rc;
6171}
6172
a5763f22
HMH		 6173static struct ibm_struct fan_driver_data = {
6174 .name = "fan",
6175 .read = fan_read,
6176 .write = fan_write,
6177 .exit = fan_exit,
a5763f22
HMH		 6178};
6179
56b6aeb0
HMH		 6180/****************************************************************************
6181 ****************************************************************************
6182 *
6183 * Infrastructure
6184 *
6185 ****************************************************************************
6186 ****************************************************************************/
6187
7fd40029
HMH		 6188/* sysfs name ---------------------------------------------------------- */
6189static ssize_t thinkpad_acpi_pdev_name_show(struct device *dev,
6190 struct device_attribute *attr,
6191 char *buf)
6192{
e0c7dfe7 6193 return snprintf(buf, PAGE_SIZE, "%s\n", TPACPI_NAME);
7fd40029
HMH		 6194}
6195
6196static struct device_attribute dev_attr_thinkpad_acpi_pdev_name =
6197 __ATTR(name, S_IRUGO, thinkpad_acpi_pdev_name_show, NULL);
6198
6199/* --------------------------------------------------------------------- */
6200
56b6aeb0 6201/* /proc support */
94954cc6 6202static struct proc_dir_entry *proc_dir;
16663a87 6203
56b6aeb0
HMH		 6204/*
6205 * Module and infrastructure proble, init and exit handling
6206 */
1da177e4 6207
b21a15f6
HMH		 6208static int force_load;
6209
fe08bc4b 6210#ifdef CONFIG_THINKPAD_ACPI_DEBUG
a5763f22 6211static const char * __init str_supported(int is_supported)
fe08bc4b 6212{
a5763f22 6213 static char text_unsupported[] __initdata = "not supported";
fe08bc4b 6214
a5763f22 6215 return (is_supported)? &text_unsupported[4] : &text_unsupported[0];
fe08bc4b
HMH		 6216}
6217#endif /* CONFIG_THINKPAD_ACPI_DEBUG */
6218
b21a15f6
HMH		 6219static void ibm_exit(struct ibm_struct *ibm)
6220{
6221 dbg_printk(TPACPI_DBG_EXIT, "removing %s\n", ibm->name);
6222
6223 list_del_init(&ibm->all_drivers);
6224
6225 if (ibm->flags.acpi_notify_installed) {
6226 dbg_printk(TPACPI_DBG_EXIT,
6227 "%s: acpi_remove_notify_handler\n", ibm->name);
6228 BUG_ON(!ibm->acpi);
6229 acpi_remove_notify_handler(*ibm->acpi->handle,
6230 ibm->acpi->type,
6231 dispatch_acpi_notify);
6232 ibm->flags.acpi_notify_installed = 0;
6233 ibm->flags.acpi_notify_installed = 0;
6234 }
6235
6236 if (ibm->flags.proc_created) {
6237 dbg_printk(TPACPI_DBG_EXIT,
6238 "%s: remove_proc_entry\n", ibm->name);
6239 remove_proc_entry(ibm->name, proc_dir);
6240 ibm->flags.proc_created = 0;
6241 }
6242
6243 if (ibm->flags.acpi_driver_registered) {
6244 dbg_printk(TPACPI_DBG_EXIT,
6245 "%s: acpi_bus_unregister_driver\n", ibm->name);
6246 BUG_ON(!ibm->acpi);
6247 acpi_bus_unregister_driver(ibm->acpi->driver);
6248 kfree(ibm->acpi->driver);
6249 ibm->acpi->driver = NULL;
6250 ibm->flags.acpi_driver_registered = 0;
6251 }
6252
6253 if (ibm->flags.init_called && ibm->exit) {
6254 ibm->exit();
6255 ibm->flags.init_called = 0;
6256 }
6257
6258 dbg_printk(TPACPI_DBG_INIT, "finished removing %s\n", ibm->name);
6259}
f74a27d4 6260
a5763f22 6261static int __init ibm_init(struct ibm_init_struct *iibm)
1da177e4
LT		 6262{
6263 int ret;
a5763f22 6264 struct ibm_struct *ibm = iibm->data;
1da177e4
LT		 6265 struct proc_dir_entry *entry;
6266
a5763f22
HMH		 6267 BUG_ON(ibm == NULL);
6268
6269 INIT_LIST_HEAD(&ibm->all_drivers);
6270
92641177 6271 if (ibm->flags.experimental && !experimental)
1da177e4
LT		 6272 return 0;
6273
fe08bc4b
HMH		 6274 dbg_printk(TPACPI_DBG_INIT,
6275 "probing for %s\n", ibm->name);
6276
a5763f22
HMH		 6277 if (iibm->init) {
6278 ret = iibm->init(iibm);
5fba344c
HMH		 6279 if (ret > 0)
6280 return 0; /* probe failed */
6281 if (ret)
1da177e4 6282 return ret;
a5763f22 6283
92641177 6284 ibm->flags.init_called = 1;
1da177e4
LT		 6285 }
6286
8d376cd6
HMH		 6287 if (ibm->acpi) {
6288 if (ibm->acpi->hid) {
6289 ret = register_tpacpi_subdriver(ibm);
6290 if (ret)
6291 goto err_out;
6292 }
5fba344c 6293
8d376cd6
HMH		 6294 if (ibm->acpi->notify) {
6295 ret = setup_acpi_notify(ibm);
6296 if (ret == -ENODEV) {
e0c7dfe7 6297 printk(TPACPI_NOTICE "disabling subdriver %s\n",
8d376cd6
HMH		 6298 ibm->name);
6299 ret = 0;
6300 goto err_out;
6301 }
6302 if (ret < 0)
6303 goto err_out;
5fba344c 6304 }
5fba344c
HMH		 6305 }
6306
fe08bc4b
HMH		 6307 dbg_printk(TPACPI_DBG_INIT,
6308 "%s installed\n", ibm->name);
6309
78f81cc4
BD		 6310 if (ibm->read) {
6311 entry = create_proc_entry(ibm->name,
6312 S_IFREG | S_IRUGO | S_IWUSR,
6313 proc_dir);
6314 if (!entry) {
e0c7dfe7 6315 printk(TPACPI_ERR "unable to create proc entry %s\n",
78f81cc4 6316 ibm->name);
5fba344c
HMH		 6317 ret = -ENODEV;
6318 goto err_out;
78f81cc4
BD		 6319 }
6320 entry->owner = THIS_MODULE;
6321 entry->data = ibm;
8d376cd6 6322 entry->read_proc = &dispatch_procfs_read;
78f81cc4 6323 if (ibm->write)
8d376cd6 6324 entry->write_proc = &dispatch_procfs_write;
92641177 6325 ibm->flags.proc_created = 1;
78f81cc4 6326 }
1da177e4 6327
a5763f22
HMH		 6328 list_add_tail(&ibm->all_drivers, &tpacpi_all_drivers);
6329
1da177e4 6330 return 0;
5fba344c
HMH		 6331
6332err_out:
fe08bc4b
HMH		 6333 dbg_printk(TPACPI_DBG_INIT,
6334 "%s: at error exit path with result %d\n",
6335 ibm->name, ret);
6336
5fba344c
HMH		 6337 ibm_exit(ibm);
6338 return (ret < 0)? ret : 0;
1da177e4
LT		 6339}
6340
56b6aeb0
HMH		 6341/* Probing */
6342
bf20e740
HMH		 6343/* returns 0 - probe ok, or < 0 - probe error.
6344 * Probe ok doesn't mean thinkpad found.
6345 * On error, kfree() cleanup on tp->* is not performed, caller must do it */
6346static int __must_check __init get_thinkpad_model_data(
6347 struct thinkpad_id_data *tp)
1da177e4 6348{
1855256c 6349 const struct dmi_device *dev = NULL;
56b6aeb0 6350 char ec_fw_string[18];
bf20e740 6351 char const *s;
1da177e4 6352
d5a2f2f1 6353 if (!tp)
bf20e740 6354 return -EINVAL;
d5a2f2f1
HMH		 6355
6356 memset(tp, 0, sizeof(*tp));
6357
6358 if (dmi_name_in_vendors("IBM"))
6359 tp->vendor = PCI_VENDOR_ID_IBM;
6360 else if (dmi_name_in_vendors("LENOVO"))
6361 tp->vendor = PCI_VENDOR_ID_LENOVO;
6362 else
bf20e740 6363 return 0;
d5a2f2f1 6364
bf20e740
HMH		 6365 s = dmi_get_system_info(DMI_BIOS_VERSION);
6366 tp->bios_version_str = kstrdup(s, GFP_KERNEL);
6367 if (s && !tp->bios_version_str)
6368 return -ENOMEM;
d5a2f2f1 6369 if (!tp->bios_version_str)
bf20e740 6370 return 0;
d5a2f2f1
HMH		 6371 tp->bios_model = tp->bios_version_str[0]
6372 | (tp->bios_version_str[1] << 8);
6373
56b6aeb0
HMH		 6374 /*
6375 * ThinkPad T23 or newer, A31 or newer, R50e or newer,
6376 * X32 or newer, all Z series; Some models must have an
6377 * up-to-date BIOS or they will not be detected.
6378 *
6379 * See http://thinkwiki.org/wiki/List_of_DMI_IDs
6380 */
6381 while ((dev = dmi_find_device(DMI_DEV_TYPE_OEM_STRING, NULL, dev))) {
6382 if (sscanf(dev->name,
6383 "IBM ThinkPad Embedded Controller -[%17c",
6384 ec_fw_string) == 1) {
6385 ec_fw_string[sizeof(ec_fw_string) - 1] = 0;
6386 ec_fw_string[strcspn(ec_fw_string, " ]")] = 0;
d5a2f2f1
HMH		 6387
6388 tp->ec_version_str = kstrdup(ec_fw_string, GFP_KERNEL);
bf20e740
HMH		 6389 if (!tp->ec_version_str)
6390 return -ENOMEM;
d5a2f2f1
HMH		 6391 tp->ec_model = ec_fw_string[0]
6392 | (ec_fw_string[1] << 8);
6393 break;
78f81cc4 6394 }
1da177e4 6395 }
d5a2f2f1 6396
bf20e740
HMH		 6397 s = dmi_get_system_info(DMI_PRODUCT_VERSION);
6398 if (s && !strnicmp(s, "ThinkPad", 8)) {
6399 tp->model_str = kstrdup(s, GFP_KERNEL);
6400 if (!tp->model_str)
6401 return -ENOMEM;
d5a2f2f1 6402 }
8c74adbc 6403
bf20e740
HMH		 6404 s = dmi_get_system_info(DMI_PRODUCT_NAME);
6405 tp->nummodel_str = kstrdup(s, GFP_KERNEL);
6406 if (s && !tp->nummodel_str)
6407 return -ENOMEM;
6408
6409 return 0;
1da177e4
LT		 6410}
6411
5fba344c
HMH		 6412static int __init probe_for_thinkpad(void)
6413{
6414 int is_thinkpad;
6415
6416 if (acpi_disabled)
6417 return -ENODEV;
6418
6419 /*
6420 * Non-ancient models have better DMI tagging, but very old models
6421 * don't.
6422 */
d5a2f2f1 6423 is_thinkpad = (thinkpad_id.model_str != NULL);
5fba344c
HMH		 6424
6425 /* ec is required because many other handles are relative to it */
e0c7dfe7 6426 TPACPI_ACPIHANDLE_INIT(ec);
5fba344c
HMH		 6427 if (!ec_handle) {
6428 if (is_thinkpad)
e0c7dfe7 6429 printk(TPACPI_ERR
5fba344c
HMH		 6430 "Not yet supported ThinkPad detected!\n");
6431 return -ENODEV;
6432 }
6433
0dcef77c
HMH		 6434 /*
6435 * Risks a regression on very old machines, but reduces potential
6436 * false positives a damn great deal
6437 */
6438 if (!is_thinkpad)
d5a2f2f1 6439 is_thinkpad = (thinkpad_id.vendor == PCI_VENDOR_ID_IBM);
0dcef77c
HMH		 6440
6441 if (!is_thinkpad && !force_load)
6442 return -ENODEV;
6443
5fba344c
HMH		 6444 return 0;
6445}
6446
6447
56b6aeb0 6448/* Module init, exit, parameters */
1da177e4 6449
a5763f22
HMH		 6450static struct ibm_init_struct ibms_init[] __initdata = {
6451 {
6452 .init = thinkpad_acpi_driver_init,
6453 .data = &thinkpad_acpi_driver_data,
6454 },
6455 {
6456 .init = hotkey_init,
6457 .data = &hotkey_driver_data,
6458 },
6459 {
6460 .init = bluetooth_init,
6461 .data = &bluetooth_driver_data,
6462 },
6463 {
6464 .init = wan_init,
6465 .data = &wan_driver_data,
6466 },
d7c1d17d 6467#ifdef CONFIG_THINKPAD_ACPI_VIDEO
a5763f22
HMH		 6468 {
6469 .init = video_init,
6470 .data = &video_driver_data,
6471 },
d7c1d17d 6472#endif
a5763f22
HMH		 6473 {
6474 .init = light_init,
6475 .data = &light_driver_data,
6476 },
6477#ifdef CONFIG_THINKPAD_ACPI_DOCK
6478 {
6479 .init = dock_init,
6480 .data = &dock_driver_data[0],
6481 },
6482 {
d94a7f16 6483 .init = dock_init2,
a5763f22
HMH		 6484 .data = &dock_driver_data[1],
6485 },
6486#endif
6487#ifdef CONFIG_THINKPAD_ACPI_BAY
6488 {
6489 .init = bay_init,
6490 .data = &bay_driver_data,
6491 },
6492#endif
6493 {
6494 .init = cmos_init,
6495 .data = &cmos_driver_data,
6496 },
6497 {
6498 .init = led_init,
6499 .data = &led_driver_data,
6500 },
6501 {
6502 .init = beep_init,
6503 .data = &beep_driver_data,
6504 },
6505 {
6506 .init = thermal_init,
6507 .data = &thermal_driver_data,
6508 },
6509 {
6510 .data = &ecdump_driver_data,
6511 },
6512 {
6513 .init = brightness_init,
6514 .data = &brightness_driver_data,
6515 },
6516 {
6517 .data = &volume_driver_data,
6518 },
6519 {
6520 .init = fan_init,
6521 .data = &fan_driver_data,
6522 },
6523};
6524
3945ac36 6525static int __init set_ibm_param(const char *val, struct kernel_param *kp)
1da177e4
LT		 6526{
6527 unsigned int i;
a5763f22 6528 struct ibm_struct *ibm;
1da177e4 6529
59f91ff1
HMH		 6530 if (!kp || !kp->name || !val)
6531 return -EINVAL;
6532
a5763f22
HMH		 6533 for (i = 0; i < ARRAY_SIZE(ibms_init); i++) {
6534 ibm = ibms_init[i].data;
59f91ff1
HMH		 6535 WARN_ON(ibm == NULL);
6536
6537 if (!ibm || !ibm->name)
6538 continue;
a5763f22
HMH		 6539
6540 if (strcmp(ibm->name, kp->name) == 0 && ibm->write) {
6541 if (strlen(val) > sizeof(ibms_init[i].param) - 2)
78f81cc4 6542 return -ENOSPC;
a5763f22
HMH		 6543 strcpy(ibms_init[i].param, val);
6544 strcat(ibms_init[i].param, ",");
78f81cc4
BD		 6545 return 0;
6546 }
a5763f22 6547 }
1da177e4 6548
1da177e4
LT		 6549 return -EINVAL;
6550}
6551
56b6aeb0 6552module_param(experimental, int, 0);
f68080f8 6553MODULE_PARM_DESC(experimental,
35ff8b9f 6554 "Enables experimental features when non-zero");
56b6aeb0 6555
132ce091 6556module_param_named(debug, dbg_level, uint, 0);
f68080f8 6557MODULE_PARM_DESC(debug, "Sets debug level bit-mask");
132ce091 6558
86cc9445 6559module_param(force_load, bool, 0);
f68080f8 6560MODULE_PARM_DESC(force_load,
35ff8b9f
HMH		 6561 "Attempts to load the driver even on a "
6562 "mis-identified ThinkPad when true");
0dcef77c 6563
86cc9445 6564module_param_named(fan_control, fan_control_allowed, bool, 0);
f68080f8 6565MODULE_PARM_DESC(fan_control,
35ff8b9f 6566 "Enables setting fan parameters features when true");
ecf2a80a 6567
24d3b774 6568module_param_named(brightness_mode, brightness_mode, int, 0);
f68080f8 6569MODULE_PARM_DESC(brightness_mode,
35ff8b9f
HMH		 6570 "Selects brightness control strategy: "
6571 "0=auto, 1=EC, 2=CMOS, 3=both");
24d3b774 6572
87cc537a 6573module_param(brightness_enable, uint, 0);
f68080f8 6574MODULE_PARM_DESC(brightness_enable,
35ff8b9f 6575 "Enables backlight control when 1, disables when 0");
87cc537a 6576
ff80f137 6577module_param(hotkey_report_mode, uint, 0);
f68080f8 6578MODULE_PARM_DESC(hotkey_report_mode,
35ff8b9f
HMH		 6579 "used for backwards compatibility with userspace, "
6580 "see documentation");
ff80f137 6581
e0c7dfe7 6582#define TPACPI_PARAM(feature) \
f68080f8 6583 module_param_call(feature, set_ibm_param, NULL, NULL, 0); \
cbb14842 6584 MODULE_PARM_DESC(feature, "Simulates thinkpad-acpi procfs command " \
35ff8b9f 6585 "at module load, see documentation")
1da177e4 6586
e0c7dfe7
HMH		 6587TPACPI_PARAM(hotkey);
6588TPACPI_PARAM(bluetooth);
6589TPACPI_PARAM(video);
6590TPACPI_PARAM(light);
85998248 6591#ifdef CONFIG_THINKPAD_ACPI_DOCK
e0c7dfe7 6592TPACPI_PARAM(dock);
63e5f248 6593#endif
85998248 6594#ifdef CONFIG_THINKPAD_ACPI_BAY
e0c7dfe7 6595TPACPI_PARAM(bay);
85998248 6596#endif /* CONFIG_THINKPAD_ACPI_BAY */
e0c7dfe7
HMH		 6597TPACPI_PARAM(cmos);
6598TPACPI_PARAM(led);
6599TPACPI_PARAM(beep);
6600TPACPI_PARAM(ecdump);
6601TPACPI_PARAM(brightness);
6602TPACPI_PARAM(volume);
6603TPACPI_PARAM(fan);
78f81cc4 6604
b21a15f6
HMH		 6605static void thinkpad_acpi_module_exit(void)
6606{
6607 struct ibm_struct *ibm, *itmp;
6608
6609 tpacpi_lifecycle = TPACPI_LIFE_EXITING;
6610
6611 list_for_each_entry_safe_reverse(ibm, itmp,
6612 &tpacpi_all_drivers,
6613 all_drivers) {
6614 ibm_exit(ibm);
6615 }
6616
6617 dbg_printk(TPACPI_DBG_INIT, "finished subdriver exit path...\n");
6618
6619 if (tpacpi_inputdev) {
6620 if (tp_features.input_device_registered)
6621 input_unregister_device(tpacpi_inputdev);
6622 else
6623 input_free_device(tpacpi_inputdev);
6624 }
6625
6626 if (tpacpi_hwmon)
6627 hwmon_device_unregister(tpacpi_hwmon);
6628
6629 if (tp_features.sensors_pdev_attrs_registered)
6630 device_remove_file(&tpacpi_sensors_pdev->dev,
6631 &dev_attr_thinkpad_acpi_pdev_name);
6632 if (tpacpi_sensors_pdev)
6633 platform_device_unregister(tpacpi_sensors_pdev);
6634 if (tpacpi_pdev)
6635 platform_device_unregister(tpacpi_pdev);
6636
6637 if (tp_features.sensors_pdrv_attrs_registered)
6638 tpacpi_remove_driver_attributes(&tpacpi_hwmon_pdriver.driver);
6639 if (tp_features.platform_drv_attrs_registered)
6640 tpacpi_remove_driver_attributes(&tpacpi_pdriver.driver);
6641
6642 if (tp_features.sensors_pdrv_registered)
6643 platform_driver_unregister(&tpacpi_hwmon_pdriver);
6644
6645 if (tp_features.platform_drv_registered)
6646 platform_driver_unregister(&tpacpi_pdriver);
6647
6648 if (proc_dir)
e0c7dfe7 6649 remove_proc_entry(TPACPI_PROC_DIR, acpi_root_dir);
b21a15f6 6650
e0e3c061
HMH		 6651 if (tpacpi_wq)
6652 destroy_workqueue(tpacpi_wq);
6653
b21a15f6
HMH		 6654 kfree(thinkpad_id.bios_version_str);
6655 kfree(thinkpad_id.ec_version_str);
6656 kfree(thinkpad_id.model_str);
6657}
6658
f74a27d4 6659
1def7115 6660static int __init thinkpad_acpi_module_init(void)
1da177e4
LT		 6661{
6662 int ret, i;
6663
8fef502e
HMH		 6664 tpacpi_lifecycle = TPACPI_LIFE_INIT;
6665
ff80f137
HMH		 6666 /* Parameter checking */
6667 if (hotkey_report_mode > 2)
6668 return -EINVAL;
6669
54ae1501 6670 /* Driver-level probe */
d5a2f2f1 6671
bf20e740
HMH		 6672 ret = get_thinkpad_model_data(&thinkpad_id);
6673 if (ret) {
6674 printk(TPACPI_ERR
6675 "unable to get DMI data: %d\n", ret);
6676 thinkpad_acpi_module_exit();
6677 return ret;
6678 }
5fba344c 6679 ret = probe_for_thinkpad();
d5a2f2f1
HMH		 6680 if (ret) {
6681 thinkpad_acpi_module_exit();
5fba344c 6682 return ret;
d5a2f2f1 6683 }
1da177e4 6684
54ae1501 6685 /* Driver initialization */
d5a2f2f1 6686
e0c7dfe7
HMH		 6687 TPACPI_ACPIHANDLE_INIT(ecrd);
6688 TPACPI_ACPIHANDLE_INIT(ecwr);
1da177e4 6689
e0e3c061
HMH		 6690 tpacpi_wq = create_singlethread_workqueue(TPACPI_WORKQUEUE_NAME);
6691 if (!tpacpi_wq) {
6692 thinkpad_acpi_module_exit();
6693 return -ENOMEM;
6694 }
6695
e0c7dfe7 6696 proc_dir = proc_mkdir(TPACPI_PROC_DIR, acpi_root_dir);
1da177e4 6697 if (!proc_dir) {
35ff8b9f
HMH		 6698 printk(TPACPI_ERR
6699 "unable to create proc dir " TPACPI_PROC_DIR);
1def7115 6700 thinkpad_acpi_module_exit();
1da177e4
LT		 6701 return -ENODEV;
6702 }
6703 proc_dir->owner = THIS_MODULE;
78f81cc4 6704
54ae1501
HMH		 6705 ret = platform_driver_register(&tpacpi_pdriver);
6706 if (ret) {
35ff8b9f
HMH		 6707 printk(TPACPI_ERR
6708 "unable to register main platform driver\n");
54ae1501
HMH		 6709 thinkpad_acpi_module_exit();
6710 return ret;
6711 }
ac36393d
HMH		 6712 tp_features.platform_drv_registered = 1;
6713
7fd40029
HMH		 6714 ret = platform_driver_register(&tpacpi_hwmon_pdriver);
6715 if (ret) {
35ff8b9f
HMH		 6716 printk(TPACPI_ERR
6717 "unable to register hwmon platform driver\n");
7fd40029
HMH		 6718 thinkpad_acpi_module_exit();
6719 return ret;
6720 }
6721 tp_features.sensors_pdrv_registered = 1;
6722
176750d6 6723 ret = tpacpi_create_driver_attributes(&tpacpi_pdriver.driver);
2369cc94
HMH		 6724 if (!ret) {
6725 tp_features.platform_drv_attrs_registered = 1;
35ff8b9f
HMH		 6726 ret = tpacpi_create_driver_attributes(
6727 &tpacpi_hwmon_pdriver.driver);
2369cc94 6728 }
176750d6 6729 if (ret) {
35ff8b9f
HMH		 6730 printk(TPACPI_ERR
6731 "unable to create sysfs driver attributes\n");
176750d6
HMH		 6732 thinkpad_acpi_module_exit();
6733 return ret;
6734 }
2369cc94 6735 tp_features.sensors_pdrv_attrs_registered = 1;
176750d6 6736
54ae1501
HMH		 6737
6738 /* Device initialization */
e0c7dfe7 6739 tpacpi_pdev = platform_device_register_simple(TPACPI_DRVR_NAME, -1,
54ae1501
HMH		 6740 NULL, 0);
6741 if (IS_ERR(tpacpi_pdev)) {
6742 ret = PTR_ERR(tpacpi_pdev);
6743 tpacpi_pdev = NULL;
e0c7dfe7 6744 printk(TPACPI_ERR "unable to register platform device\n");
54ae1501
HMH		 6745 thinkpad_acpi_module_exit();
6746 return ret;
6747 }
7fd40029 6748 tpacpi_sensors_pdev = platform_device_register_simple(
35ff8b9f
HMH		 6749 TPACPI_HWMON_DRVR_NAME,
6750 -1, NULL, 0);
7fd40029
HMH		 6751 if (IS_ERR(tpacpi_sensors_pdev)) {
6752 ret = PTR_ERR(tpacpi_sensors_pdev);
6753 tpacpi_sensors_pdev = NULL;
35ff8b9f
HMH		 6754 printk(TPACPI_ERR
6755 "unable to register hwmon platform device\n");
7fd40029
HMH		 6756 thinkpad_acpi_module_exit();
6757 return ret;
6758 }
6759 ret = device_create_file(&tpacpi_sensors_pdev->dev,
6760 &dev_attr_thinkpad_acpi_pdev_name);
6761 if (ret) {
e0c7dfe7 6762 printk(TPACPI_ERR
35ff8b9f 6763 "unable to create sysfs hwmon device attributes\n");
7fd40029
HMH		 6764 thinkpad_acpi_module_exit();
6765 return ret;
6766 }
6767 tp_features.sensors_pdev_attrs_registered = 1;
6768 tpacpi_hwmon = hwmon_device_register(&tpacpi_sensors_pdev->dev);
54ae1501
HMH		 6769 if (IS_ERR(tpacpi_hwmon)) {
6770 ret = PTR_ERR(tpacpi_hwmon);
6771 tpacpi_hwmon = NULL;
e0c7dfe7 6772 printk(TPACPI_ERR "unable to register hwmon device\n");
54ae1501
HMH		 6773 thinkpad_acpi_module_exit();
6774 return ret;
6775 }
8523ed6f 6776 mutex_init(&tpacpi_inputdev_send_mutex);
7f5d1cd6
HMH		 6777 tpacpi_inputdev = input_allocate_device();
6778 if (!tpacpi_inputdev) {
e0c7dfe7 6779 printk(TPACPI_ERR "unable to allocate input device\n");
7f5d1cd6
HMH		 6780 thinkpad_acpi_module_exit();
6781 return -ENOMEM;
6782 } else {
6783 /* Prepare input device, but don't register */
6784 tpacpi_inputdev->name = "ThinkPad Extra Buttons";
e0c7dfe7 6785 tpacpi_inputdev->phys = TPACPI_DRVR_NAME "/input0";
7f5d1cd6 6786 tpacpi_inputdev->id.bustype = BUS_HOST;
edf0e0e5
HMH		 6787 tpacpi_inputdev->id.vendor = (thinkpad_id.vendor) ?
6788 thinkpad_id.vendor :
6789 PCI_VENDOR_ID_IBM;
7f5d1cd6
HMH		 6790 tpacpi_inputdev->id.product = TPACPI_HKEY_INPUT_PRODUCT;
6791 tpacpi_inputdev->id.version = TPACPI_HKEY_INPUT_VERSION;
6792 }
a5763f22
HMH		 6793 for (i = 0; i < ARRAY_SIZE(ibms_init); i++) {
6794 ret = ibm_init(&ibms_init[i]);
6795 if (ret >= 0 && *ibms_init[i].param)
6796 ret = ibms_init[i].data->write(ibms_init[i].param);
1da177e4 6797 if (ret < 0) {
1def7115 6798 thinkpad_acpi_module_exit();
1da177e4
LT		 6799 return ret;
6800 }
6801 }
7f5d1cd6
HMH		 6802 ret = input_register_device(tpacpi_inputdev);
6803 if (ret < 0) {
e0c7dfe7 6804 printk(TPACPI_ERR "unable to register input device\n");
7f5d1cd6
HMH		 6805 thinkpad_acpi_module_exit();
6806 return ret;
6807 } else {
6808 tp_features.input_device_registered = 1;
6809 }
1da177e4 6810
8fef502e 6811 tpacpi_lifecycle = TPACPI_LIFE_RUNNING;
1da177e4
LT		 6812 return 0;
6813}
6814
f68080f8
HMH		 6815/* Please remove this in year 2009 */
6816MODULE_ALIAS("ibm_acpi");
6817
95e57ab2
HMH		 6818MODULE_ALIAS(TPACPI_DRVR_SHORTNAME);
6819
f68080f8
HMH		 6820/*
6821 * DMI matching for module autoloading
6822 *
6823 * See http://thinkwiki.org/wiki/List_of_DMI_IDs
6824 * See http://thinkwiki.org/wiki/BIOS_Upgrade_Downloads
6825 *
6826 * Only models listed in thinkwiki will be supported, so add yours
6827 * if it is not there yet.
6828 */
6829#define IBM_BIOS_MODULE_ALIAS(__type) \
6830 MODULE_ALIAS("dmi:bvnIBM:bvr" __type "ET??WW")
6831
6832/* Non-ancient thinkpads */
6833MODULE_ALIAS("dmi:bvnIBM:*:svnIBM:*:pvrThinkPad*:rvnIBM:*");
6834MODULE_ALIAS("dmi:bvnLENOVO:*:svnLENOVO:*:pvrThinkPad*:rvnLENOVO:*");
6835
6836/* Ancient thinkpad BIOSes have to be identified by
6837 * BIOS type or model number, and there are far less
6838 * BIOS types than model numbers... */
6839IBM_BIOS_MODULE_ALIAS("I[B,D,H,I,M,N,O,T,W,V,Y,Z]");
6840IBM_BIOS_MODULE_ALIAS("1[0,3,6,8,A-G,I,K,M-P,S,T]");
6841IBM_BIOS_MODULE_ALIAS("K[U,X-Z]");
6842
6843MODULE_AUTHOR("Borislav Deianov, Henrique de Moraes Holschuh");
e0c7dfe7
HMH		 6844MODULE_DESCRIPTION(TPACPI_DESC);
6845MODULE_VERSION(TPACPI_VERSION);
f68080f8
HMH		 6846MODULE_LICENSE("GPL");
6847
1def7115
HMH		 6848module_init(thinkpad_acpi_module_init);
6849module_exit(thinkpad_acpi_module_exit);
Linux 6.x block layer and io_uring tree(s)