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ACPI: thinkpad-acpi: support 16 levels of brightness (v3)
[deliverable/linux.git] / drivers / misc / thinkpad_acpi.c
CommitLineData
1da177e4 1/*
643f12db 2 * thinkpad_acpi.c - ThinkPad ACPI Extras
1da177e4
LT		 3 *
4 *
78f81cc4 5 * Copyright (C) 2004-2005 Borislav Deianov <borislav@users.sf.net>
a62bc916 6 * Copyright (C) 2006-2007 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
3b0c6485 24#define IBM_VERSION "0.16"
7fd40029 25#define TPACPI_SYSFS_VERSION 0x020000
78f81cc4
BD		 26
27/*
1da177e4 28 * Changelog:
643f12db
HMH		 29 * 2007-03-27 0.14 renamed to thinkpad_acpi and moved to
30 * drivers/misc.
f9ff43a6
HMH		 31 *
32 * 2006-11-22 0.13 new maintainer
33 * changelog now lives in git commit history, and will
34 * not be updated further in-file.
837ca6dd 35 *
78f81cc4
BD		 36 * 2005-08-17 0.12 fix compilation on 2.6.13-rc kernels
37 * 2005-03-17 0.11 support for 600e, 770x
38 * thanks to Jamie Lentin <lentinj@dial.pipex.com>
39 * support for 770e, G41
40 * G40 and G41 don't have a thinklight
41 * temperatures no longer experimental
42 * experimental brightness control
43 * experimental volume control
44 * experimental fan enable/disable
837ca6dd 45 * 2005-01-16 0.10 fix module loading on R30, R31
78f81cc4
BD		 46 * 2005-01-16 0.9 support for 570, R30, R31
47 * ultrabay support on A22p, A3x
48 * limit arg for cmos, led, beep, drop experimental status
49 * more capable led control on A21e, A22p, T20-22, X20
50 * experimental temperatures and fan speed
51 * experimental embedded controller register dump
52 * mark more functions as __init, drop incorrect __exit
53 * use MODULE_VERSION
54 * thanks to Henrik Brix Andersen <brix@gentoo.org>
55 * fix parameter passing on module loading
56 * thanks to Rusty Russell <rusty@rustcorp.com.au>
57 * thanks to Jim Radford <radford@blackbean.org>
58 * 2004-11-08 0.8 fix init error case, don't return from a macro
59 * thanks to Chris Wright <chrisw@osdl.org>
60 * 2004-10-23 0.7 fix module loading on A21e, A22p, T20, T21, X20
61 * fix led control on A21e
62 * 2004-10-19 0.6 use acpi_bus_register_driver() to claim HKEY device
1da177e4
LT		 63 * 2004-10-18 0.5 thinklight support on A21e, G40, R32, T20, T21, X20
64 * proc file format changed
65 * video_switch command
66 * experimental cmos control
67 * experimental led control
68 * experimental acpi sounds
78f81cc4
BD		 69 * 2004-09-16 0.4 support for module parameters
70 * hotkey mask can be prefixed by 0x
71 * video output switching
72 * video expansion control
73 * ultrabay eject support
74 * removed lcd brightness/on/off control, didn't work
75 * 2004-08-17 0.3 support for R40
76 * lcd off, brightness control
77 * thinklight on/off
78 * 2004-08-14 0.2 support for T series, X20
79 * bluetooth enable/disable
80 * hotkey events disabled by default
81 * removed fan control, currently useless
82 * 2004-08-09 0.1 initial release, support for X series
1da177e4
LT		 83 */
84
f21f85de 85#include "thinkpad_acpi.h"
1da177e4 86
f9ff43a6 87MODULE_AUTHOR("Borislav Deianov, Henrique de Moraes Holschuh");
78f81cc4
BD		 88MODULE_DESCRIPTION(IBM_DESC);
89MODULE_VERSION(IBM_VERSION);
90MODULE_LICENSE("GPL");
91
d903ac54
HMH		 92/* Please remove this in year 2009 */
93MODULE_ALIAS("ibm_acpi");
94
b964b437
HMH		 95/*
96 * DMI matching for module autoloading
97 *
98 * See http://thinkwiki.org/wiki/List_of_DMI_IDs
99 * See http://thinkwiki.org/wiki/BIOS_Upgrade_Downloads
100 *
101 * Only models listed in thinkwiki will be supported, so add yours
102 * if it is not there yet.
103 */
104#define IBM_BIOS_MODULE_ALIAS(__type) \
105 MODULE_ALIAS("dmi:bvnIBM:bvr" __type "ET??WW")
106
107/* Non-ancient thinkpads */
108MODULE_ALIAS("dmi:bvnIBM:*:svnIBM:*:pvrThinkPad*:rvnIBM:*");
109MODULE_ALIAS("dmi:bvnLENOVO:*:svnLENOVO:*:pvrThinkPad*:rvnLENOVO:*");
110
111/* Ancient thinkpad BIOSes have to be identified by
112 * BIOS type or model number, and there are far less
113 * BIOS types than model numbers... */
114IBM_BIOS_MODULE_ALIAS("I[B,D,H,I,M,N,O,T,W,V,Y,Z]");
115IBM_BIOS_MODULE_ALIAS("1[0,3,6,8,A-G,I,K,M-P,S,T]");
116IBM_BIOS_MODULE_ALIAS("K[U,X-Z]");
117
1da177e4
LT		 118#define __unused __attribute__ ((unused))
119
8fef502e
HMH		 120static enum {
121 TPACPI_LIFE_INIT = 0,
122 TPACPI_LIFE_RUNNING,
123 TPACPI_LIFE_EXITING,
124} tpacpi_lifecycle;
125
56b6aeb0
HMH		 126/****************************************************************************
127 ****************************************************************************
128 *
129 * ACPI Helpers and device model
130 *
131 ****************************************************************************
132 ****************************************************************************/
133
134/*************************************************************************
135 * ACPI basic handles
136 */
1da177e4 137
94954cc6 138static acpi_handle root_handle;
1da177e4
LT		 139
140#define IBM_HANDLE(object, parent, paths...) \
141 static acpi_handle object##_handle; \
142 static acpi_handle *object##_parent = &parent##_handle; \
78f81cc4 143 static char *object##_path; \
1da177e4
LT		 144 static char *object##_paths[] = { paths }
145
78f81cc4
BD		 146IBM_HANDLE(ec, root, "\\_SB.PCI0.ISA.EC0", /* 240, 240x */
147 "\\_SB.PCI.ISA.EC", /* 570 */
148 "\\_SB.PCI0.ISA0.EC0", /* 600e/x, 770e, 770x */
149 "\\_SB.PCI0.ISA.EC", /* A21e, A2xm/p, T20-22, X20-21 */
150 "\\_SB.PCI0.AD4S.EC0", /* i1400, R30 */
151 "\\_SB.PCI0.ICH3.EC0", /* R31 */
152 "\\_SB.PCI0.LPC.EC", /* all others */
56b6aeb0 153 );
78f81cc4 154
56b6aeb0
HMH		 155IBM_HANDLE(ecrd, ec, "ECRD"); /* 570 */
156IBM_HANDLE(ecwr, ec, "ECWR"); /* 570 */
78f81cc4 157
56b6aeb0
HMH		 158
159/*************************************************************************
160 * Misc ACPI handles
161 */
78f81cc4
BD		 162
163IBM_HANDLE(cmos, root, "\\UCMS", /* R50, R50e, R50p, R51, T4x, X31, X40 */
164 "\\CMOS", /* A3x, G4x, R32, T23, T30, X22-24, X30 */
165 "\\CMS", /* R40, R40e */
56b6aeb0 166 ); /* all others */
78f81cc4
BD		 167
168IBM_HANDLE(hkey, ec, "\\_SB.HKEY", /* 600e/x, 770e, 770x */
169 "^HKEY", /* R30, R31 */
170 "HKEY", /* all others */
56b6aeb0 171 ); /* 570 */
78f81cc4 172
78f81cc4 173
56b6aeb0
HMH		 174/*************************************************************************
175 * ACPI helpers
a8b7a662
HMH		 176 */
177
1da177e4
LT		 178static int acpi_evalf(acpi_handle handle,
179 void *res, char *method, char *fmt, ...)
180{
181 char *fmt0 = fmt;
78f81cc4
BD		 182 struct acpi_object_list params;
183 union acpi_object in_objs[IBM_MAX_ACPI_ARGS];
184 struct acpi_buffer result, *resultp;
185 union acpi_object out_obj;
186 acpi_status status;
187 va_list ap;
188 char res_type;
189 int success;
190 int quiet;
1da177e4
LT		 191
192 if (!*fmt) {
193 printk(IBM_ERR "acpi_evalf() called with empty format\n");
194 return 0;
195 }
196
197 if (*fmt == 'q') {
198 quiet = 1;
199 fmt++;
200 } else
201 quiet = 0;
202
203 res_type = *(fmt++);
204
205 params.count = 0;
206 params.pointer = &in_objs[0];
207
208 va_start(ap, fmt);
209 while (*fmt) {
210 char c = *(fmt++);
211 switch (c) {
212 case 'd': /* int */
213 in_objs[params.count].integer.value = va_arg(ap, int);
214 in_objs[params.count++].type = ACPI_TYPE_INTEGER;
215 break;
78f81cc4 216 /* add more types as needed */
1da177e4
LT		 217 default:
218 printk(IBM_ERR "acpi_evalf() called "
219 "with invalid format character '%c'\n", c);
220 return 0;
221 }
222 }
223 va_end(ap);
224
78f81cc4
BD		 225 if (res_type != 'v') {
226 result.length = sizeof(out_obj);
227 result.pointer = &out_obj;
228 resultp = &result;
229 } else
230 resultp = NULL;
1da177e4 231
78f81cc4 232 status = acpi_evaluate_object(handle, method, &params, resultp);
1da177e4
LT		 233
234 switch (res_type) {
78f81cc4 235 case 'd': /* int */
1da177e4
LT		 236 if (res)
237 *(int *)res = out_obj.integer.value;
238 success = status == AE_OK && out_obj.type == ACPI_TYPE_INTEGER;
239 break;
78f81cc4 240 case 'v': /* void */
1da177e4
LT		 241 success = status == AE_OK;
242 break;
78f81cc4 243 /* add more types as needed */
1da177e4
LT		 244 default:
245 printk(IBM_ERR "acpi_evalf() called "
246 "with invalid format character '%c'\n", res_type);
247 return 0;
248 }
249
56b6aeb0
HMH		 250 if (!success && !quiet)
251 printk(IBM_ERR "acpi_evalf(%s, %s, ...) failed: %d\n",
252 method, fmt0, status);
253
254 return success;
255}
256
257static void __unused acpi_print_int(acpi_handle handle, char *method)
258{
259 int i;
260
261 if (acpi_evalf(handle, &i, method, "d"))
262 printk(IBM_INFO "%s = 0x%x\n", method, i);
263 else
264 printk(IBM_ERR "error calling %s\n", method);
265}
266
267static int acpi_ec_read(int i, u8 * p)
268{
269 int v;
270
271 if (ecrd_handle) {
272 if (!acpi_evalf(ecrd_handle, &v, NULL, "dd", i))
273 return 0;
274 *p = v;
275 } else {
276 if (ec_read(i, p) < 0)
277 return 0;
278 }
279
280 return 1;
281}
282
283static int acpi_ec_write(int i, u8 v)
284{
285 if (ecwr_handle) {
286 if (!acpi_evalf(ecwr_handle, NULL, NULL, "vdd", i, v))
287 return 0;
288 } else {
289 if (ec_write(i, v) < 0)
290 return 0;
291 }
292
293 return 1;
294}
295
296static int _sta(acpi_handle handle)
297{
298 int status;
299
300 if (!handle || !acpi_evalf(handle, &status, "_STA", "d"))
301 status = 0;
302
303 return status;
304}
305
c9bea99c
HMH		 306static int issue_thinkpad_cmos_command(int cmos_cmd)
307{
308 if (!cmos_handle)
309 return -ENXIO;
310
311 if (!acpi_evalf(cmos_handle, NULL, NULL, "vd", cmos_cmd))
312 return -EIO;
313
314 return 0;
315}
316
56b6aeb0
HMH		 317/*************************************************************************
318 * ACPI device model
319 */
320
8d376cd6 321static void drv_acpi_handle_init(char *name,
5fba344c
HMH		 322 acpi_handle *handle, acpi_handle parent,
323 char **paths, int num_paths, char **path)
56b6aeb0
HMH		 324{
325 int i;
326 acpi_status status;
327
5ae930e6
HMH		 328 vdbg_printk(TPACPI_DBG_INIT, "trying to locate ACPI handle for %s\n",
329 name);
330
56b6aeb0
HMH		 331 for (i = 0; i < num_paths; i++) {
332 status = acpi_get_handle(parent, paths[i], handle);
333 if (ACPI_SUCCESS(status)) {
334 *path = paths[i];
5ae930e6
HMH		 335 dbg_printk(TPACPI_DBG_INIT,
336 "Found ACPI handle %s for %s\n",
337 *path, name);
56b6aeb0
HMH		 338 return;
339 }
340 }
341
5ae930e6
HMH		 342 vdbg_printk(TPACPI_DBG_INIT, "ACPI handle for %s not found\n",
343 name);
56b6aeb0
HMH		 344 *handle = NULL;
345}
346
8d376cd6 347static void dispatch_acpi_notify(acpi_handle handle, u32 event, void *data)
56b6aeb0
HMH		 348{
349 struct ibm_struct *ibm = data;
350
8fef502e
HMH		 351 if (tpacpi_lifecycle != TPACPI_LIFE_RUNNING)
352 return;
353
8d376cd6 354 if (!ibm || !ibm->acpi || !ibm->acpi->notify)
56b6aeb0
HMH		 355 return;
356
8d376cd6 357 ibm->acpi->notify(ibm, event);
56b6aeb0
HMH		 358}
359
8d376cd6 360static int __init setup_acpi_notify(struct ibm_struct *ibm)
56b6aeb0
HMH		 361{
362 acpi_status status;
5ae930e6 363 int rc;
56b6aeb0 364
8d376cd6
HMH		 365 BUG_ON(!ibm->acpi);
366
367 if (!*ibm->acpi->handle)
56b6aeb0
HMH		 368 return 0;
369
5ae930e6 370 vdbg_printk(TPACPI_DBG_INIT,
fe08bc4b
HMH		 371 "setting up ACPI notify for %s\n", ibm->name);
372
5ae930e6
HMH		 373 rc = acpi_bus_get_device(*ibm->acpi->handle, &ibm->acpi->device);
374 if (rc < 0) {
375 printk(IBM_ERR "acpi_bus_get_device(%s) failed: %d\n",
376 ibm->name, rc);
56b6aeb0
HMH		 377 return -ENODEV;
378 }
379
8d376cd6
HMH		 380 acpi_driver_data(ibm->acpi->device) = ibm;
381 sprintf(acpi_device_class(ibm->acpi->device), "%s/%s",
643f12db
HMH		 382 IBM_ACPI_EVENT_PREFIX,
383 ibm->name);
56b6aeb0 384
8d376cd6
HMH		 385 status = acpi_install_notify_handler(*ibm->acpi->handle,
386 ibm->acpi->type, dispatch_acpi_notify, ibm);
56b6aeb0
HMH		 387 if (ACPI_FAILURE(status)) {
388 if (status == AE_ALREADY_EXISTS) {
389 printk(IBM_NOTICE "another device driver is already handling %s events\n",
390 ibm->name);
391 } else {
392 printk(IBM_ERR "acpi_install_notify_handler(%s) failed: %d\n",
393 ibm->name, status);
394 }
395 return -ENODEV;
396 }
8d376cd6 397 ibm->flags.acpi_notify_installed = 1;
56b6aeb0
HMH		 398 return 0;
399}
400
8d376cd6 401static int __init tpacpi_device_add(struct acpi_device *device)
56b6aeb0
HMH		 402{
403 return 0;
404}
405
6700121b 406static int __init register_tpacpi_subdriver(struct ibm_struct *ibm)
56b6aeb0 407{
5ae930e6 408 int rc;
56b6aeb0 409
fe08bc4b
HMH		 410 dbg_printk(TPACPI_DBG_INIT,
411 "registering %s as an ACPI driver\n", ibm->name);
412
8d376cd6
HMH		 413 BUG_ON(!ibm->acpi);
414
415 ibm->acpi->driver = kzalloc(sizeof(struct acpi_driver), GFP_KERNEL);
416 if (!ibm->acpi->driver) {
5fba344c
HMH		 417 printk(IBM_ERR "kzalloc(ibm->driver) failed\n");
418 return -ENOMEM;
56b6aeb0
HMH		 419 }
420
8d376cd6
HMH		 421 sprintf(ibm->acpi->driver->name, "%s_%s", IBM_NAME, ibm->name);
422 ibm->acpi->driver->ids = ibm->acpi->hid;
1ba90e3a 423
8d376cd6 424 ibm->acpi->driver->ops.add = &tpacpi_device_add;
56b6aeb0 425
5ae930e6
HMH		 426 rc = acpi_bus_register_driver(ibm->acpi->driver);
427 if (rc < 0) {
56b6aeb0 428 printk(IBM_ERR "acpi_bus_register_driver(%s) failed: %d\n",
1ba90e3a 429 ibm->name, rc);
8d376cd6
HMH		 430 kfree(ibm->acpi->driver);
431 ibm->acpi->driver = NULL;
5ae930e6 432 } else if (!rc)
8d376cd6 433 ibm->flags.acpi_driver_registered = 1;
56b6aeb0 434
5ae930e6 435 return rc;
56b6aeb0
HMH		 436}
437
438
439/****************************************************************************
440 ****************************************************************************
441 *
442 * Procfs Helpers
443 *
444 ****************************************************************************
445 ****************************************************************************/
446
8d376cd6
HMH		 447static int dispatch_procfs_read(char *page, char **start, off_t off,
448 int count, int *eof, void *data)
56b6aeb0
HMH		 449{
450 struct ibm_struct *ibm = data;
451 int len;
452
453 if (!ibm || !ibm->read)
454 return -EINVAL;
455
456 len = ibm->read(page);
457 if (len < 0)
458 return len;
459
460 if (len <= off + count)
461 *eof = 1;
462 *start = page + off;
463 len -= off;
464 if (len > count)
465 len = count;
466 if (len < 0)
467 len = 0;
468
469 return len;
470}
471
8d376cd6
HMH		 472static int dispatch_procfs_write(struct file *file,
473 const char __user * userbuf,
474 unsigned long count, void *data)
56b6aeb0
HMH		 475{
476 struct ibm_struct *ibm = data;
477 char *kernbuf;
478 int ret;
479
480 if (!ibm || !ibm->write)
481 return -EINVAL;
482
483 kernbuf = kmalloc(count + 2, GFP_KERNEL);
484 if (!kernbuf)
485 return -ENOMEM;
1da177e4 486
56b6aeb0
HMH		 487 if (copy_from_user(kernbuf, userbuf, count)) {
488 kfree(kernbuf);
489 return -EFAULT;
490 }
1da177e4 491
56b6aeb0
HMH		 492 kernbuf[count] = 0;
493 strcat(kernbuf, ",");
494 ret = ibm->write(kernbuf);
495 if (ret == 0)
496 ret = count;
1da177e4 497
56b6aeb0
HMH		 498 kfree(kernbuf);
499
500 return ret;
1da177e4
LT		 501}
502
503static char *next_cmd(char **cmds)
504{
505 char *start = *cmds;
506 char *end;
507
508 while ((end = strchr(start, ',')) && end == start)
509 start = end + 1;
510
511 if (!end)
512 return NULL;
513
514 *end = 0;
515 *cmds = end + 1;
516 return start;
517}
518
56b6aeb0 519
54ae1501
HMH		 520/****************************************************************************
521 ****************************************************************************
522 *
7f5d1cd6 523 * Device model: input, hwmon and platform
54ae1501
HMH		 524 *
525 ****************************************************************************
526 ****************************************************************************/
527
94954cc6 528static struct platform_device *tpacpi_pdev;
7fd40029 529static struct platform_device *tpacpi_sensors_pdev;
1beeffe4 530static struct device *tpacpi_hwmon;
7f5d1cd6 531static struct input_dev *tpacpi_inputdev;
8523ed6f 532static struct mutex tpacpi_inputdev_send_mutex;
54ae1501 533
e295e850
HMH		 534
535static int tpacpi_resume_handler(struct platform_device *pdev)
536{
537 struct ibm_struct *ibm, *itmp;
538
539 list_for_each_entry_safe(ibm, itmp,
540 &tpacpi_all_drivers,
541 all_drivers) {
542 if (ibm->resume)
543 (ibm->resume)();
544 }
545
546 return 0;
547}
548
54ae1501
HMH		 549static struct platform_driver tpacpi_pdriver = {
550 .driver = {
551 .name = IBM_DRVR_NAME,
552 .owner = THIS_MODULE,
553 },
e295e850 554 .resume = tpacpi_resume_handler,
54ae1501
HMH		 555};
556
7fd40029
HMH		 557static struct platform_driver tpacpi_hwmon_pdriver = {
558 .driver = {
559 .name = IBM_HWMON_DRVR_NAME,
560 .owner = THIS_MODULE,
561 },
562};
54ae1501 563
176750d6
HMH		 564/*************************************************************************
565 * thinkpad-acpi driver attributes
566 */
567
568/* interface_version --------------------------------------------------- */
569static ssize_t tpacpi_driver_interface_version_show(
570 struct device_driver *drv,
571 char *buf)
572{
573 return snprintf(buf, PAGE_SIZE, "0x%08x\n", TPACPI_SYSFS_VERSION);
574}
575
576static DRIVER_ATTR(interface_version, S_IRUGO,
577 tpacpi_driver_interface_version_show, NULL);
578
579/* debug_level --------------------------------------------------------- */
580static ssize_t tpacpi_driver_debug_show(struct device_driver *drv,
581 char *buf)
582{
583 return snprintf(buf, PAGE_SIZE, "0x%04x\n", dbg_level);
584}
585
586static ssize_t tpacpi_driver_debug_store(struct device_driver *drv,
587 const char *buf, size_t count)
588{
589 unsigned long t;
176750d6 590
7252374a 591 if (parse_strtoul(buf, 0xffff, &t))
176750d6
HMH		 592 return -EINVAL;
593
594 dbg_level = t;
595
596 return count;
597}
598
599static DRIVER_ATTR(debug_level, S_IWUSR | S_IRUGO,
600 tpacpi_driver_debug_show, tpacpi_driver_debug_store);
601
602/* version ------------------------------------------------------------- */
603static ssize_t tpacpi_driver_version_show(struct device_driver *drv,
604 char *buf)
605{
606 return snprintf(buf, PAGE_SIZE, "%s v%s\n", IBM_DESC, IBM_VERSION);
607}
608
609static DRIVER_ATTR(version, S_IRUGO,
610 tpacpi_driver_version_show, NULL);
611
612/* --------------------------------------------------------------------- */
613
614static struct driver_attribute* tpacpi_driver_attributes[] = {
615 &driver_attr_debug_level, &driver_attr_version,
616 &driver_attr_interface_version,
617};
618
619static int __init tpacpi_create_driver_attributes(struct device_driver *drv)
620{
621 int i, res;
622
623 i = 0;
624 res = 0;
625 while (!res && i < ARRAY_SIZE(tpacpi_driver_attributes)) {
626 res = driver_create_file(drv, tpacpi_driver_attributes[i]);
627 i++;
628 }
629
630 return res;
631}
632
633static void tpacpi_remove_driver_attributes(struct device_driver *drv)
634{
635 int i;
636
637 for(i = 0; i < ARRAY_SIZE(tpacpi_driver_attributes); i++)
638 driver_remove_file(drv, tpacpi_driver_attributes[i]);
639}
640
7252374a
HMH		 641/*************************************************************************
642 * sysfs support helpers
643 */
644
645struct attribute_set_obj {
646 struct attribute_set s;
647 struct attribute *a;
648} __attribute__((packed));
649
650static struct attribute_set *create_attr_set(unsigned int max_members,
651 const char* name)
652{
653 struct attribute_set_obj *sobj;
654
655 if (max_members == 0)
656 return NULL;
657
658 /* Allocates space for implicit NULL at the end too */
659 sobj = kzalloc(sizeof(struct attribute_set_obj) +
660 max_members * sizeof(struct attribute *),
661 GFP_KERNEL);
662 if (!sobj)
663 return NULL;
664 sobj->s.max_members = max_members;
665 sobj->s.group.attrs = &sobj->a;
666 sobj->s.group.name = name;
667
668 return &sobj->s;
669}
670
671/* not multi-threaded safe, use it in a single thread per set */
672static int add_to_attr_set(struct attribute_set* s, struct attribute *attr)
673{
674 if (!s || !attr)
675 return -EINVAL;
676
677 if (s->members >= s->max_members)
678 return -ENOMEM;
679
680 s->group.attrs[s->members] = attr;
681 s->members++;
682
683 return 0;
684}
685
686static int add_many_to_attr_set(struct attribute_set* s,
687 struct attribute **attr,
688 unsigned int count)
689{
690 int i, res;
691
692 for (i = 0; i < count; i++) {
693 res = add_to_attr_set(s, attr[i]);
694 if (res)
695 return res;
696 }
697
698 return 0;
699}
700
701static void delete_attr_set(struct attribute_set* s, struct kobject *kobj)
702{
703 sysfs_remove_group(kobj, &s->group);
704 destroy_attr_set(s);
705}
706
707static int parse_strtoul(const char *buf,
708 unsigned long max, unsigned long *value)
709{
710 char *endp;
711
32afbf07
HMH		 712 while (*buf && isspace(*buf))
713 buf++;
7252374a
HMH		 714 *value = simple_strtoul(buf, &endp, 0);
715 while (*endp && isspace(*endp))
716 endp++;
717 if (*endp || *value > max)
718 return -EINVAL;
719
720 return 0;
721}
722
56b6aeb0
HMH		 723/****************************************************************************
724 ****************************************************************************
725 *
726 * Subdrivers
727 *
728 ****************************************************************************
729 ****************************************************************************/
730
731/*************************************************************************
142cfc90 732 * thinkpad-acpi init subdriver
56b6aeb0
HMH		 733 */
734
a5763f22 735static int __init thinkpad_acpi_driver_init(struct ibm_init_struct *iibm)
1da177e4
LT		 736{
737 printk(IBM_INFO "%s v%s\n", IBM_DESC, IBM_VERSION);
738 printk(IBM_INFO "%s\n", IBM_URL);
739
d5a2f2f1
HMH		 740 printk(IBM_INFO "ThinkPad BIOS %s, EC %s\n",
741 (thinkpad_id.bios_version_str) ?
742 thinkpad_id.bios_version_str : "unknown",
743 (thinkpad_id.ec_version_str) ?
744 thinkpad_id.ec_version_str : "unknown");
745
746 if (thinkpad_id.vendor && thinkpad_id.model_str)
747 printk(IBM_INFO "%s %s\n",
748 (thinkpad_id.vendor == PCI_VENDOR_ID_IBM) ?
749 "IBM" : ((thinkpad_id.vendor ==
750 PCI_VENDOR_ID_LENOVO) ?
751 "Lenovo" : "Unknown vendor"),
752 thinkpad_id.model_str);
3945ac36 753
1da177e4
LT		 754 return 0;
755}
756
643f12db 757static int thinkpad_acpi_driver_read(char *p)
1da177e4
LT		 758{
759 int len = 0;
760
761 len += sprintf(p + len, "driver:\t\t%s\n", IBM_DESC);
762 len += sprintf(p + len, "version:\t%s\n", IBM_VERSION);
763
764 return len;
765}
766
a5763f22
HMH		 767static struct ibm_struct thinkpad_acpi_driver_data = {
768 .name = "driver",
769 .read = thinkpad_acpi_driver_read,
770};
771
56b6aeb0
HMH		 772/*************************************************************************
773 * Hotkey subdriver
774 */
775
78f81cc4 776static int hotkey_orig_status;
ae92bd17 777static u32 hotkey_orig_mask;
9b010de5 778static u32 hotkey_all_mask;
6a38abbf
HMH		 779static u32 hotkey_reserved_mask;
780
edf0e0e5 781static u16 *hotkey_keycode_map;
78f81cc4 782
94954cc6 783static struct attribute_set *hotkey_dev_attributes;
a0416420 784
74941a69
HMH		 785static int hotkey_get_wlsw(int *status)
786{
787 if (!acpi_evalf(hkey_handle, status, "WLSW", "d"))
788 return -EIO;
789 return 0;
790}
791
a0416420
HMH		 792/* sysfs hotkey enable ------------------------------------------------- */
793static ssize_t hotkey_enable_show(struct device *dev,
794 struct device_attribute *attr,
795 char *buf)
796{
ae92bd17
HMH		 797 int res, status;
798 u32 mask;
a0416420
HMH		 799
800 res = hotkey_get(&status, &mask);
801 if (res)
802 return res;
803
804 return snprintf(buf, PAGE_SIZE, "%d\n", status);
805}
806
807static ssize_t hotkey_enable_store(struct device *dev,
808 struct device_attribute *attr,
809 const char *buf, size_t count)
810{
811 unsigned long t;
ae92bd17
HMH		 812 int res, status;
813 u32 mask;
a0416420
HMH		 814
815 if (parse_strtoul(buf, 1, &t))
816 return -EINVAL;
817
818 res = hotkey_get(&status, &mask);
819 if (!res)
820 res = hotkey_set(t, mask);
821
822 return (res) ? res : count;
823}
824
825static struct device_attribute dev_attr_hotkey_enable =
cc4c24e1 826 __ATTR(hotkey_enable, S_IWUSR | S_IRUGO,
a0416420
HMH		 827 hotkey_enable_show, hotkey_enable_store);
828
829/* sysfs hotkey mask --------------------------------------------------- */
830static ssize_t hotkey_mask_show(struct device *dev,
831 struct device_attribute *attr,
832 char *buf)
833{
ae92bd17
HMH		 834 int res, status;
835 u32 mask;
a0416420
HMH		 836
837 res = hotkey_get(&status, &mask);
838 if (res)
839 return res;
840
ae92bd17 841 return snprintf(buf, PAGE_SIZE, "0x%08x\n", mask);
a0416420
HMH		 842}
843
844static ssize_t hotkey_mask_store(struct device *dev,
845 struct device_attribute *attr,
846 const char *buf, size_t count)
847{
848 unsigned long t;
ae92bd17
HMH		 849 int res, status;
850 u32 mask;
a0416420 851
ae92bd17 852 if (parse_strtoul(buf, 0xffffffffUL, &t))
a0416420
HMH		 853 return -EINVAL;
854
855 res = hotkey_get(&status, &mask);
856 if (!res)
857 hotkey_set(status, t);
858
859 return (res) ? res : count;
860}
861
862static struct device_attribute dev_attr_hotkey_mask =
cc4c24e1 863 __ATTR(hotkey_mask, S_IWUSR | S_IRUGO,
a0416420
HMH		 864 hotkey_mask_show, hotkey_mask_store);
865
866/* sysfs hotkey bios_enabled ------------------------------------------- */
867static ssize_t hotkey_bios_enabled_show(struct device *dev,
868 struct device_attribute *attr,
869 char *buf)
870{
871 return snprintf(buf, PAGE_SIZE, "%d\n", hotkey_orig_status);
872}
873
874static struct device_attribute dev_attr_hotkey_bios_enabled =
cc4c24e1 875 __ATTR(hotkey_bios_enabled, S_IRUGO, hotkey_bios_enabled_show, NULL);
a0416420
HMH		 876
877/* sysfs hotkey bios_mask ---------------------------------------------- */
878static ssize_t hotkey_bios_mask_show(struct device *dev,
879 struct device_attribute *attr,
880 char *buf)
881{
ae92bd17 882 return snprintf(buf, PAGE_SIZE, "0x%08x\n", hotkey_orig_mask);
a0416420
HMH		 883}
884
885static struct device_attribute dev_attr_hotkey_bios_mask =
cc4c24e1 886 __ATTR(hotkey_bios_mask, S_IRUGO, hotkey_bios_mask_show, NULL);
a0416420 887
9b010de5
HMH		 888/* sysfs hotkey all_mask ----------------------------------------------- */
889static ssize_t hotkey_all_mask_show(struct device *dev,
890 struct device_attribute *attr,
891 char *buf)
892{
893 return snprintf(buf, PAGE_SIZE, "0x%08x\n", hotkey_all_mask);
894}
895
896static struct device_attribute dev_attr_hotkey_all_mask =
897 __ATTR(hotkey_all_mask, S_IRUGO, hotkey_all_mask_show, NULL);
898
899/* sysfs hotkey recommended_mask --------------------------------------- */
900static ssize_t hotkey_recommended_mask_show(struct device *dev,
901 struct device_attribute *attr,
902 char *buf)
903{
904 return snprintf(buf, PAGE_SIZE, "0x%08x\n",
905 hotkey_all_mask & ~hotkey_reserved_mask);
906}
907
908static struct device_attribute dev_attr_hotkey_recommended_mask =
909 __ATTR(hotkey_recommended_mask, S_IRUGO,
910 hotkey_recommended_mask_show, NULL);
911
74941a69
HMH		 912/* sysfs hotkey radio_sw ----------------------------------------------- */
913static ssize_t hotkey_radio_sw_show(struct device *dev,
914 struct device_attribute *attr,
915 char *buf)
916{
917 int res, s;
918 res = hotkey_get_wlsw(&s);
919 if (res < 0)
920 return res;
921
922 return snprintf(buf, PAGE_SIZE, "%d\n", !!s);
923}
924
925static struct device_attribute dev_attr_hotkey_radio_sw =
926 __ATTR(hotkey_radio_sw, S_IRUGO, hotkey_radio_sw_show, NULL);
927
ff80f137
HMH		 928/* sysfs hotkey report_mode -------------------------------------------- */
929static ssize_t hotkey_report_mode_show(struct device *dev,
930 struct device_attribute *attr,
931 char *buf)
932{
933 return snprintf(buf, PAGE_SIZE, "%d\n",
934 (hotkey_report_mode != 0) ? hotkey_report_mode : 1);
935}
936
937static struct device_attribute dev_attr_hotkey_report_mode =
938 __ATTR(hotkey_report_mode, S_IRUGO, hotkey_report_mode_show, NULL);
939
a0416420
HMH		 940/* --------------------------------------------------------------------- */
941
ff80f137
HMH		 942static struct attribute *hotkey_attributes[] __initdata = {
943 &dev_attr_hotkey_enable.attr,
944 &dev_attr_hotkey_report_mode.attr,
945};
946
947static struct attribute *hotkey_mask_attributes[] __initdata = {
a0416420
HMH		 948 &dev_attr_hotkey_mask.attr,
949 &dev_attr_hotkey_bios_enabled.attr,
950 &dev_attr_hotkey_bios_mask.attr,
9b010de5
HMH		 951 &dev_attr_hotkey_all_mask.attr,
952 &dev_attr_hotkey_recommended_mask.attr,
a0416420
HMH		 953};
954
a5763f22 955static int __init hotkey_init(struct ibm_init_struct *iibm)
56b6aeb0 956{
edf0e0e5
HMH		 957
958 static u16 ibm_keycode_map[] __initdata = {
959 /* Scan Codes 0x00 to 0x0B: ACPI HKEY FN+F1..F12 */
960 KEY_FN_F1, KEY_FN_F2, KEY_COFFEE, KEY_SLEEP,
961 KEY_WLAN, KEY_FN_F6, KEY_SWITCHVIDEOMODE, KEY_FN_F8,
962 KEY_FN_F9, KEY_FN_F10, KEY_FN_F11, KEY_SUSPEND,
963 /* Scan codes 0x0C to 0x0F: Other ACPI HKEY hot keys */
964 KEY_UNKNOWN, /* 0x0C: FN+BACKSPACE */
965 KEY_UNKNOWN, /* 0x0D: FN+INSERT */
966 KEY_UNKNOWN, /* 0x0E: FN+DELETE */
e927c08d 967 KEY_RESERVED, /* 0x0F: FN+HOME (brightness up) */
edf0e0e5 968 /* Scan codes 0x10 to 0x1F: Extended ACPI HKEY hot keys */
e927c08d 969 KEY_RESERVED, /* 0x10: FN+END (brightness down) */
edf0e0e5
HMH		 970 KEY_RESERVED, /* 0x11: FN+PGUP (thinklight toggle) */
971 KEY_UNKNOWN, /* 0x12: FN+PGDOWN */
972 KEY_ZOOM, /* 0x13: FN+SPACE (zoom) */
e927c08d
HMH		 973 KEY_RESERVED, /* 0x14: VOLUME UP */
974 KEY_RESERVED, /* 0x15: VOLUME DOWN */
975 KEY_RESERVED, /* 0x16: MUTE */
edf0e0e5
HMH		 976 KEY_VENDOR, /* 0x17: Thinkpad/AccessIBM/Lenovo */
977 /* (assignments unknown, please report if found) */
978 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN,
979 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN,
980 };
981 static u16 lenovo_keycode_map[] __initdata = {
982 /* Scan Codes 0x00 to 0x0B: ACPI HKEY FN+F1..F12 */
983 KEY_FN_F1, KEY_COFFEE, KEY_BATTERY, KEY_SLEEP,
984 KEY_WLAN, KEY_FN_F6, KEY_SWITCHVIDEOMODE, KEY_FN_F8,
985 KEY_FN_F9, KEY_FN_F10, KEY_FN_F11, KEY_SUSPEND,
986 /* Scan codes 0x0C to 0x0F: Other ACPI HKEY hot keys */
987 KEY_UNKNOWN, /* 0x0C: FN+BACKSPACE */
988 KEY_UNKNOWN, /* 0x0D: FN+INSERT */
989 KEY_UNKNOWN, /* 0x0E: FN+DELETE */
990 KEY_BRIGHTNESSUP, /* 0x0F: FN+HOME (brightness up) */
991 /* Scan codes 0x10 to 0x1F: Extended ACPI HKEY hot keys */
992 KEY_BRIGHTNESSDOWN, /* 0x10: FN+END (brightness down) */
993 KEY_RESERVED, /* 0x11: FN+PGUP (thinklight toggle) */
994 KEY_UNKNOWN, /* 0x12: FN+PGDOWN */
995 KEY_ZOOM, /* 0x13: FN+SPACE (zoom) */
e927c08d
HMH		 996 KEY_RESERVED, /* 0x14: VOLUME UP */
997 KEY_RESERVED, /* 0x15: VOLUME DOWN */
998 KEY_RESERVED, /* 0x16: MUTE */
edf0e0e5
HMH		 999 KEY_VENDOR, /* 0x17: Thinkpad/AccessIBM/Lenovo */
1000 /* (assignments unknown, please report if found) */
1001 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN,
1002 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN,
1003 };
1004
1005#define TPACPI_HOTKEY_MAP_LEN ARRAY_SIZE(ibm_keycode_map)
1006#define TPACPI_HOTKEY_MAP_SIZE sizeof(ibm_keycode_map)
1007#define TPACPI_HOTKEY_MAP_TYPESIZE sizeof(ibm_keycode_map[0])
1008
6a38abbf 1009 int res, i;
74941a69 1010 int status;
1b6521dc 1011 int hkeyv;
b86c4722 1012
fe08bc4b
HMH		 1013 vdbg_printk(TPACPI_DBG_INIT, "initializing hotkey subdriver\n");
1014
6a38abbf
HMH		 1015 BUG_ON(!tpacpi_inputdev);
1016
8d376cd6 1017 IBM_ACPIHANDLE_INIT(hkey);
40ca9fdf 1018 mutex_init(&hotkey_mutex);
5fba344c 1019
56b6aeb0 1020 /* hotkey not supported on 570 */
d8fd94d9 1021 tp_features.hotkey = hkey_handle != NULL;
56b6aeb0 1022
fe08bc4b 1023 vdbg_printk(TPACPI_DBG_INIT, "hotkeys are %s\n",
d8fd94d9 1024 str_supported(tp_features.hotkey));
fe08bc4b 1025
d8fd94d9 1026 if (tp_features.hotkey) {
ff80f137 1027 hotkey_dev_attributes = create_attr_set(8, NULL);
a0416420
HMH		 1028 if (!hotkey_dev_attributes)
1029 return -ENOMEM;
ff80f137
HMH		 1030 res = add_many_to_attr_set(hotkey_dev_attributes,
1031 hotkey_attributes,
1032 ARRAY_SIZE(hotkey_attributes));
a0416420
HMH		 1033 if (res)
1034 return res;
1035
56b6aeb0 1036 /* mask not supported on 570, 600e/x, 770e, 770x, A21e, A2xm/p,
1b6521dc
HMH		 1037 A30, R30, R31, T20-22, X20-21, X22-24. Detected by checking
1038 for HKEY interface version 0x100 */
1039 if (acpi_evalf(hkey_handle, &hkeyv, "MHKV", "qd")) {
1040 if ((hkeyv >> 8) != 1) {
1041 printk(IBM_ERR "unknown version of the "
1042 "HKEY interface: 0x%x\n", hkeyv);
1043 printk(IBM_ERR "please report this to %s\n",
1044 IBM_MAIL);
1045 } else {
1046 /*
1047 * MHKV 0x100 in A31, R40, R40e,
1048 * T4x, X31, and later
1049 * */
1050 tp_features.hotkey_mask = 1;
1051 }
1052 }
56b6aeb0 1053
fe08bc4b 1054 vdbg_printk(TPACPI_DBG_INIT, "hotkey masks are %s\n",
d8fd94d9 1055 str_supported(tp_features.hotkey_mask));
fe08bc4b 1056
9b010de5 1057 if (tp_features.hotkey_mask) {
9b010de5 1058 if (!acpi_evalf(hkey_handle, &hotkey_all_mask,
1b6521dc
HMH		 1059 "MHKA", "qd")) {
1060 printk(IBM_ERR
1061 "missing MHKA handler, "
1062 "please report this to %s\n",
1063 IBM_MAIL);
9b010de5 1064 hotkey_all_mask = 0x080cU; /* FN+F12, FN+F4, FN+F3 */
1b6521dc 1065 }
9b010de5
HMH		 1066 }
1067
b86c4722 1068 res = hotkey_get(&hotkey_orig_status, &hotkey_orig_mask);
a0416420
HMH		 1069 if (!res && tp_features.hotkey_mask) {
1070 res = add_many_to_attr_set(hotkey_dev_attributes,
1071 hotkey_mask_attributes,
1072 ARRAY_SIZE(hotkey_mask_attributes));
1073 }
74941a69
HMH		 1074
1075 /* Not all thinkpads have a hardware radio switch */
1076 if (!res && acpi_evalf(hkey_handle, &status, "WLSW", "qd")) {
1077 tp_features.hotkey_wlsw = 1;
1078 printk(IBM_INFO
1079 "radio switch found; radios are %s\n",
1080 enabled(status, 0));
1081 res = add_to_attr_set(hotkey_dev_attributes,
1082 &dev_attr_hotkey_radio_sw.attr);
1083 }
1084
a0416420
HMH		 1085 if (!res)
1086 res = register_attr_set_with_sysfs(
1087 hotkey_dev_attributes,
1088 &tpacpi_pdev->dev.kobj);
b86c4722
HMH		 1089 if (res)
1090 return res;
6a38abbf 1091
edf0e0e5
HMH		 1092 /* Set up key map */
1093
1094 hotkey_keycode_map = kmalloc(TPACPI_HOTKEY_MAP_SIZE,
1095 GFP_KERNEL);
1096 if (!hotkey_keycode_map) {
1097 printk(IBM_ERR "failed to allocate memory for key map\n");
1098 return -ENOMEM;
1099 }
1100
1101 if (thinkpad_id.vendor == PCI_VENDOR_ID_LENOVO) {
1102 dbg_printk(TPACPI_DBG_INIT,
1103 "using Lenovo default hot key map\n");
1104 memcpy(hotkey_keycode_map, &lenovo_keycode_map,
1105 TPACPI_HOTKEY_MAP_SIZE);
1106 } else {
1107 dbg_printk(TPACPI_DBG_INIT,
1108 "using IBM default hot key map\n");
1109 memcpy(hotkey_keycode_map, &ibm_keycode_map,
1110 TPACPI_HOTKEY_MAP_SIZE);
1111 }
1112
6a38abbf
HMH		 1113 set_bit(EV_KEY, tpacpi_inputdev->evbit);
1114 set_bit(EV_MSC, tpacpi_inputdev->evbit);
1115 set_bit(MSC_SCAN, tpacpi_inputdev->mscbit);
edf0e0e5
HMH		 1116 tpacpi_inputdev->keycodesize = TPACPI_HOTKEY_MAP_TYPESIZE;
1117 tpacpi_inputdev->keycodemax = TPACPI_HOTKEY_MAP_LEN;
1118 tpacpi_inputdev->keycode = hotkey_keycode_map;
1119 for (i = 0; i < TPACPI_HOTKEY_MAP_LEN; i++) {
6a38abbf
HMH		 1120 if (hotkey_keycode_map[i] != KEY_RESERVED) {
1121 set_bit(hotkey_keycode_map[i],
1122 tpacpi_inputdev->keybit);
1123 } else {
1124 if (i < sizeof(hotkey_reserved_mask)*8)
1125 hotkey_reserved_mask |= 1 << i;
1126 }
1127 }
1128
5c29d58f
HMH		 1129 if (tp_features.hotkey_wlsw) {
1130 set_bit(EV_SW, tpacpi_inputdev->evbit);
1131 set_bit(SW_RADIO, tpacpi_inputdev->swbit);
1132 }
1133
1a343760
HMH		 1134 dbg_printk(TPACPI_DBG_INIT,
1135 "enabling hot key handling\n");
1136 res = hotkey_set(1, (hotkey_all_mask & ~hotkey_reserved_mask)
1137 | hotkey_orig_mask);
1138 if (res)
1139 return res;
ff80f137
HMH		 1140
1141 dbg_printk(TPACPI_DBG_INIT,
1142 "legacy hot key reporting over procfs %s\n",
1143 (hotkey_report_mode < 2) ?
1144 "enabled" : "disabled");
56b6aeb0
HMH		 1145 }
1146
d8fd94d9 1147 return (tp_features.hotkey)? 0 : 1;
56b6aeb0
HMH		 1148}
1149
1150static void hotkey_exit(void)
1151{
b86c4722
HMH		 1152 int res;
1153
d8fd94d9 1154 if (tp_features.hotkey) {
fe08bc4b 1155 dbg_printk(TPACPI_DBG_EXIT, "restoring original hotkey mask\n");
b86c4722
HMH		 1156 res = hotkey_set(hotkey_orig_status, hotkey_orig_mask);
1157 if (res)
1158 printk(IBM_ERR "failed to restore hotkey to BIOS defaults\n");
5fba344c 1159 }
a0416420
HMH		 1160
1161 if (hotkey_dev_attributes) {
1162 delete_attr_set(hotkey_dev_attributes, &tpacpi_pdev->dev.kobj);
1163 hotkey_dev_attributes = NULL;
1164 }
56b6aeb0
HMH		 1165}
1166
6a38abbf
HMH		 1167static void tpacpi_input_send_key(unsigned int scancode,
1168 unsigned int keycode)
1169{
1170 if (keycode != KEY_RESERVED) {
8523ed6f
HMH		 1171 mutex_lock(&tpacpi_inputdev_send_mutex);
1172
6a38abbf
HMH		 1173 input_report_key(tpacpi_inputdev, keycode, 1);
1174 if (keycode == KEY_UNKNOWN)
1175 input_event(tpacpi_inputdev, EV_MSC, MSC_SCAN,
1176 scancode);
1177 input_sync(tpacpi_inputdev);
1178
1179 input_report_key(tpacpi_inputdev, keycode, 0);
1180 if (keycode == KEY_UNKNOWN)
1181 input_event(tpacpi_inputdev, EV_MSC, MSC_SCAN,
1182 scancode);
1183 input_sync(tpacpi_inputdev);
8523ed6f
HMH		 1184
1185 mutex_unlock(&tpacpi_inputdev_send_mutex);
6a38abbf
HMH		 1186 }
1187}
1188
5c29d58f
HMH		 1189static void tpacpi_input_send_radiosw(void)
1190{
1191 int wlsw;
1192
8523ed6f
HMH		 1193 mutex_lock(&tpacpi_inputdev_send_mutex);
1194
f4e1e43c 1195 if (tp_features.hotkey_wlsw && !hotkey_get_wlsw(&wlsw)) {
5c29d58f
HMH		 1196 input_report_switch(tpacpi_inputdev,
1197 SW_RADIO, !!wlsw);
f4e1e43c
HMH		 1198 input_sync(tpacpi_inputdev);
1199 }
8523ed6f
HMH		 1200
1201 mutex_unlock(&tpacpi_inputdev_send_mutex);
5c29d58f
HMH		 1202}
1203
56b6aeb0
HMH		 1204static void hotkey_notify(struct ibm_struct *ibm, u32 event)
1205{
6a38abbf
HMH		 1206 u32 hkey;
1207 unsigned int keycode, scancode;
3eea123d 1208 int send_acpi_ev;
3e5ce914 1209 int ignore_acpi_ev;
3eea123d
HMH		 1210
1211 if (event != 0x80) {
1212 printk(IBM_ERR "unknown HKEY notification event %d\n", event);
1213 /* forward it to userspace, maybe it knows how to handle it */
1214 acpi_bus_generate_netlink_event(ibm->acpi->device->pnp.device_class,
1215 ibm->acpi->device->dev.bus_id,
1216 event, 0);
1217 return;
1218 }
1219
1220 while (1) {
1221 if (!acpi_evalf(hkey_handle, &hkey, "MHKP", "d")) {
1222 printk(IBM_ERR "failed to retrieve HKEY event\n");
1223 return;
1224 }
1225
1226 if (hkey == 0) {
1227 /* queue empty */
1228 return;
1229 }
1230
1231 send_acpi_ev = 0;
3e5ce914 1232 ignore_acpi_ev = 0;
56b6aeb0 1233
ff80f137
HMH		 1234 switch (hkey >> 12) {
1235 case 1:
1236 /* 0x1000-0x1FFF: key presses */
1237 scancode = hkey & 0xfff;
1238 if (scancode > 0 && scancode < 0x21) {
1239 scancode--;
1240 keycode = hotkey_keycode_map[scancode];
1241 tpacpi_input_send_key(scancode, keycode);
1242 } else {
1243 printk(IBM_ERR
1244 "hotkey 0x%04x out of range for keyboard map\n",
1245 hkey);
1246 send_acpi_ev = 1;
1247 }
1248 break;
1249 case 5:
1250 /* 0x5000-0x5FFF: LID */
1251 /* we don't handle it through this path, just
1252 * eat up known LID events */
1253 if (hkey != 0x5001 && hkey != 0x5002) {
1254 printk(IBM_ERR
3eea123d
HMH		 1255 "unknown LID-related HKEY event: 0x%04x\n",
1256 hkey);
ff80f137 1257 send_acpi_ev = 1;
3e5ce914
HMH		 1258 } else {
1259 ignore_acpi_ev = 1;
ff80f137
HMH		 1260 }
1261 break;
1262 case 7:
1263 /* 0x7000-0x7FFF: misc */
1264 if (tp_features.hotkey_wlsw && hkey == 0x7000) {
1265 tpacpi_input_send_radiosw();
6a38abbf 1266 break;
6a38abbf 1267 }
ff80f137
HMH		 1268 /* fallthrough to default */
1269 default:
1270 /* case 2: dock-related */
1271 /* 0x2305 - T43 waking up due to bay lever eject while aslept */
1272 /* case 3: ultra-bay related. maybe bay in dock? */
1273 /* 0x3003 - T43 after wake up by bay lever eject (0x2305) */
1274 printk(IBM_NOTICE "unhandled HKEY event 0x%04x\n", hkey);
1275 send_acpi_ev = 1;
6a38abbf 1276 }
ff80f137 1277
3eea123d 1278 /* Legacy events */
3e5ce914 1279 if (!ignore_acpi_ev && (send_acpi_ev || hotkey_report_mode < 2)) {
3eea123d 1280 acpi_bus_generate_proc_event(ibm->acpi->device, event, hkey);
3e5ce914 1281 }
ff80f137 1282
3eea123d 1283 /* netlink events */
3e5ce914 1284 if (!ignore_acpi_ev && send_acpi_ev) {
3eea123d
HMH		 1285 acpi_bus_generate_netlink_event(ibm->acpi->device->pnp.device_class,
1286 ibm->acpi->device->dev.bus_id,
1287 event, hkey);
1288 }
56b6aeb0
HMH		 1289 }
1290}
1291
5c29d58f
HMH		 1292static void hotkey_resume(void)
1293{
1294 tpacpi_input_send_radiosw();
1295}
1296
40ca9fdf
HMH		 1297/*
1298 * Call with hotkey_mutex held
1299 */
ae92bd17 1300static int hotkey_get(int *status, u32 *mask)
1da177e4
LT		 1301{
1302 if (!acpi_evalf(hkey_handle, status, "DHKC", "d"))
b86c4722 1303 return -EIO;
78f81cc4 1304
d8fd94d9 1305 if (tp_features.hotkey_mask)
78f81cc4 1306 if (!acpi_evalf(hkey_handle, mask, "DHKN", "d"))
b86c4722 1307 return -EIO;
78f81cc4 1308
b86c4722 1309 return 0;
1da177e4
LT		 1310}
1311
40ca9fdf
HMH		 1312/*
1313 * Call with hotkey_mutex held
1314 */
ae92bd17 1315static int hotkey_set(int status, u32 mask)
1da177e4
LT		 1316{
1317 int i;
1318
1319 if (!acpi_evalf(hkey_handle, NULL, "MHKC", "vd", status))
b86c4722 1320 return -EIO;
1da177e4 1321
d8fd94d9 1322 if (tp_features.hotkey_mask)
78f81cc4
BD		 1323 for (i = 0; i < 32; i++) {
1324 int bit = ((1 << i) & mask) != 0;
1325 if (!acpi_evalf(hkey_handle,
1326 NULL, "MHKM", "vdd", i + 1, bit))
b86c4722 1327 return -EIO;
78f81cc4 1328 }
1da177e4 1329
b86c4722 1330 return 0;
1da177e4
LT		 1331}
1332
a0416420 1333/* procfs -------------------------------------------------------------- */
78f81cc4 1334static int hotkey_read(char *p)
1da177e4 1335{
ae92bd17
HMH		 1336 int res, status;
1337 u32 mask;
1da177e4
LT		 1338 int len = 0;
1339
d8fd94d9 1340 if (!tp_features.hotkey) {
78f81cc4
BD		 1341 len += sprintf(p + len, "status:\t\tnot supported\n");
1342 return len;
1343 }
1344
40ca9fdf
HMH		 1345 res = mutex_lock_interruptible(&hotkey_mutex);
1346 if (res < 0)
1347 return res;
b86c4722 1348 res = hotkey_get(&status, &mask);
40ca9fdf 1349 mutex_unlock(&hotkey_mutex);
b86c4722
HMH		 1350 if (res)
1351 return res;
1da177e4
LT		 1352
1353 len += sprintf(p + len, "status:\t\t%s\n", enabled(status, 0));
d8fd94d9 1354 if (tp_features.hotkey_mask) {
ae92bd17 1355 len += sprintf(p + len, "mask:\t\t0x%08x\n", mask);
1da177e4
LT		 1356 len += sprintf(p + len,
1357 "commands:\tenable, disable, reset, <mask>\n");
1358 } else {
1359 len += sprintf(p + len, "mask:\t\tnot supported\n");
1360 len += sprintf(p + len, "commands:\tenable, disable, reset\n");
1361 }
1362
1363 return len;
1364}
1365
78f81cc4 1366static int hotkey_write(char *buf)
1da177e4 1367{
ae92bd17
HMH		 1368 int res, status;
1369 u32 mask;
1da177e4
LT		 1370 char *cmd;
1371 int do_cmd = 0;
1372
d8fd94d9 1373 if (!tp_features.hotkey)
1da177e4
LT		 1374 return -ENODEV;
1375
40ca9fdf
HMH		 1376 res = mutex_lock_interruptible(&hotkey_mutex);
1377 if (res < 0)
1378 return res;
1379
b86c4722
HMH		 1380 res = hotkey_get(&status, &mask);
1381 if (res)
40ca9fdf 1382 goto errexit;
78f81cc4 1383
40ca9fdf 1384 res = 0;
1da177e4
LT		 1385 while ((cmd = next_cmd(&buf))) {
1386 if (strlencmp(cmd, "enable") == 0) {
1387 status = 1;
1388 } else if (strlencmp(cmd, "disable") == 0) {
1389 status = 0;
1390 } else if (strlencmp(cmd, "reset") == 0) {
78f81cc4
BD		 1391 status = hotkey_orig_status;
1392 mask = hotkey_orig_mask;
1da177e4
LT		 1393 } else if (sscanf(cmd, "0x%x", &mask) == 1) {
1394 /* mask set */
1395 } else if (sscanf(cmd, "%x", &mask) == 1) {
1396 /* mask set */
40ca9fdf
HMH		 1397 } else {
1398 res = -EINVAL;
1399 goto errexit;
1400 }
1da177e4
LT		 1401 do_cmd = 1;
1402 }
1403
40ca9fdf 1404 if (do_cmd)
b86c4722 1405 res = hotkey_set(status, mask);
1da177e4 1406
40ca9fdf
HMH		 1407errexit:
1408 mutex_unlock(&hotkey_mutex);
1409 return res;
78f81cc4 1410}
1da177e4 1411
1ba90e3a
TR		 1412static const struct acpi_device_id ibm_htk_device_ids[] = {
1413 {IBM_HKEY_HID, 0},
1414 {"", 0},
1415};
1416
8d376cd6 1417static struct tp_acpi_drv_struct ibm_hotkey_acpidriver = {
1ba90e3a 1418 .hid = ibm_htk_device_ids,
8d376cd6
HMH		 1419 .notify = hotkey_notify,
1420 .handle = &hkey_handle,
1421 .type = ACPI_DEVICE_NOTIFY,
1422};
1423
a5763f22
HMH		 1424static struct ibm_struct hotkey_driver_data = {
1425 .name = "hotkey",
a5763f22
HMH		 1426 .read = hotkey_read,
1427 .write = hotkey_write,
1428 .exit = hotkey_exit,
5c29d58f 1429 .resume = hotkey_resume,
8d376cd6 1430 .acpi = &ibm_hotkey_acpidriver,
a5763f22
HMH		 1431};
1432
56b6aeb0
HMH		 1433/*************************************************************************
1434 * Bluetooth subdriver
1435 */
1da177e4 1436
d3a6ade4
HMH		 1437/* sysfs bluetooth enable ---------------------------------------------- */
1438static ssize_t bluetooth_enable_show(struct device *dev,
1439 struct device_attribute *attr,
1440 char *buf)
1441{
1442 int status;
1443
1444 status = bluetooth_get_radiosw();
1445 if (status < 0)
1446 return status;
1447
1448 return snprintf(buf, PAGE_SIZE, "%d\n", status ? 1 : 0);
1449}
1450
1451static ssize_t bluetooth_enable_store(struct device *dev,
1452 struct device_attribute *attr,
1453 const char *buf, size_t count)
1454{
1455 unsigned long t;
1456 int res;
1457
1458 if (parse_strtoul(buf, 1, &t))
1459 return -EINVAL;
1460
1461 res = bluetooth_set_radiosw(t);
1462
1463 return (res) ? res : count;
1464}
1465
1466static struct device_attribute dev_attr_bluetooth_enable =
cc4c24e1 1467 __ATTR(bluetooth_enable, S_IWUSR | S_IRUGO,
d3a6ade4
HMH		 1468 bluetooth_enable_show, bluetooth_enable_store);
1469
1470/* --------------------------------------------------------------------- */
1471
1472static struct attribute *bluetooth_attributes[] = {
1473 &dev_attr_bluetooth_enable.attr,
1474 NULL
1475};
1476
1477static const struct attribute_group bluetooth_attr_group = {
d3a6ade4
HMH		 1478 .attrs = bluetooth_attributes,
1479};
1480
a5763f22 1481static int __init bluetooth_init(struct ibm_init_struct *iibm)
1da177e4 1482{
d3a6ade4 1483 int res;
d6fdd1e9
HMH		 1484 int status = 0;
1485
fe08bc4b
HMH		 1486 vdbg_printk(TPACPI_DBG_INIT, "initializing bluetooth subdriver\n");
1487
8d376cd6 1488 IBM_ACPIHANDLE_INIT(hkey);
5fba344c 1489
78f81cc4
BD		 1490 /* bluetooth not supported on 570, 600e/x, 770e, 770x, A21e, A2xm/p,
1491 G4x, R30, R31, R40e, R50e, T20-22, X20-21 */
d8fd94d9 1492 tp_features.bluetooth = hkey_handle &&
d6fdd1e9
HMH		 1493 acpi_evalf(hkey_handle, &status, "GBDC", "qd");
1494
1495 vdbg_printk(TPACPI_DBG_INIT, "bluetooth is %s, status 0x%02x\n",
1496 str_supported(tp_features.bluetooth),
1497 status);
1498
d3a6ade4
HMH		 1499 if (tp_features.bluetooth) {
1500 if (!(status & TP_ACPI_BLUETOOTH_HWPRESENT)) {
1501 /* no bluetooth hardware present in system */
1502 tp_features.bluetooth = 0;
1503 dbg_printk(TPACPI_DBG_INIT,
1504 "bluetooth hardware not installed\n");
1505 } else {
1506 res = sysfs_create_group(&tpacpi_pdev->dev.kobj,
1507 &bluetooth_attr_group);
1508 if (res)
1509 return res;
1510 }
d6fdd1e9 1511 }
fe08bc4b 1512
d8fd94d9 1513 return (tp_features.bluetooth)? 0 : 1;
1da177e4
LT		 1514}
1515
d3a6ade4
HMH		 1516static void bluetooth_exit(void)
1517{
1518 sysfs_remove_group(&tpacpi_pdev->dev.kobj,
1519 &bluetooth_attr_group);
1520}
1521
d6fdd1e9 1522static int bluetooth_get_radiosw(void)
1da177e4
LT		 1523{
1524 int status;
1525
d6fdd1e9
HMH		 1526 if (!tp_features.bluetooth)
1527 return -ENODEV;
1da177e4 1528
d6fdd1e9
HMH		 1529 if (!acpi_evalf(hkey_handle, &status, "GBDC", "d"))
1530 return -EIO;
1531
1532 return ((status & TP_ACPI_BLUETOOTH_RADIOSSW) != 0);
1533}
1534
1535static int bluetooth_set_radiosw(int radio_on)
1536{
1537 int status;
1538
1539 if (!tp_features.bluetooth)
1540 return -ENODEV;
1541
1542 if (!acpi_evalf(hkey_handle, &status, "GBDC", "d"))
1543 return -EIO;
1544 if (radio_on)
1545 status |= TP_ACPI_BLUETOOTH_RADIOSSW;
1546 else
1547 status &= ~TP_ACPI_BLUETOOTH_RADIOSSW;
1548 if (!acpi_evalf(hkey_handle, NULL, "SBDC", "vd", status))
1549 return -EIO;
1550
1551 return 0;
1da177e4
LT		 1552}
1553
d3a6ade4 1554/* procfs -------------------------------------------------------------- */
78f81cc4 1555static int bluetooth_read(char *p)
1da177e4
LT		 1556{
1557 int len = 0;
d6fdd1e9 1558 int status = bluetooth_get_radiosw();
1da177e4 1559
d8fd94d9 1560 if (!tp_features.bluetooth)
1da177e4 1561 len += sprintf(p + len, "status:\t\tnot supported\n");
1da177e4 1562 else {
d6fdd1e9
HMH		 1563 len += sprintf(p + len, "status:\t\t%s\n",
1564 (status)? "enabled" : "disabled");
1da177e4
LT		 1565 len += sprintf(p + len, "commands:\tenable, disable\n");
1566 }
1567
1568 return len;
1569}
1570
78f81cc4 1571static int bluetooth_write(char *buf)
1da177e4 1572{
1da177e4 1573 char *cmd;
1da177e4 1574
d8fd94d9 1575 if (!tp_features.bluetooth)
78f81cc4 1576 return -ENODEV;
1da177e4
LT		 1577
1578 while ((cmd = next_cmd(&buf))) {
1579 if (strlencmp(cmd, "enable") == 0) {
d6fdd1e9 1580 bluetooth_set_radiosw(1);
1da177e4 1581 } else if (strlencmp(cmd, "disable") == 0) {
d6fdd1e9 1582 bluetooth_set_radiosw(0);
1da177e4
LT		 1583 } else
1584 return -EINVAL;
1da177e4
LT		 1585 }
1586
1da177e4
LT		 1587 return 0;
1588}
1589
a5763f22
HMH		 1590static struct ibm_struct bluetooth_driver_data = {
1591 .name = "bluetooth",
1592 .read = bluetooth_read,
1593 .write = bluetooth_write,
d3a6ade4 1594 .exit = bluetooth_exit,
a5763f22
HMH		 1595};
1596
56b6aeb0
HMH		 1597/*************************************************************************
1598 * Wan subdriver
1599 */
1600
d3a6ade4
HMH		 1601/* sysfs wan enable ---------------------------------------------------- */
1602static ssize_t wan_enable_show(struct device *dev,
1603 struct device_attribute *attr,
1604 char *buf)
1605{
1606 int status;
1607
1608 status = wan_get_radiosw();
1609 if (status < 0)
1610 return status;
1611
1612 return snprintf(buf, PAGE_SIZE, "%d\n", status ? 1 : 0);
1613}
1614
1615static ssize_t wan_enable_store(struct device *dev,
1616 struct device_attribute *attr,
1617 const char *buf, size_t count)
1618{
1619 unsigned long t;
1620 int res;
1621
1622 if (parse_strtoul(buf, 1, &t))
1623 return -EINVAL;
1624
1625 res = wan_set_radiosw(t);
1626
1627 return (res) ? res : count;
1628}
1629
1630static struct device_attribute dev_attr_wan_enable =
cc4c24e1 1631 __ATTR(wwan_enable, S_IWUSR | S_IRUGO,
d3a6ade4
HMH		 1632 wan_enable_show, wan_enable_store);
1633
1634/* --------------------------------------------------------------------- */
1635
1636static struct attribute *wan_attributes[] = {
1637 &dev_attr_wan_enable.attr,
1638 NULL
1639};
1640
1641static const struct attribute_group wan_attr_group = {
d3a6ade4
HMH		 1642 .attrs = wan_attributes,
1643};
1644
a5763f22 1645static int __init wan_init(struct ibm_init_struct *iibm)
42adb53c 1646{
d3a6ade4 1647 int res;
d6fdd1e9
HMH		 1648 int status = 0;
1649
fe08bc4b
HMH		 1650 vdbg_printk(TPACPI_DBG_INIT, "initializing wan subdriver\n");
1651
8d376cd6 1652 IBM_ACPIHANDLE_INIT(hkey);
5fba344c 1653
d8fd94d9 1654 tp_features.wan = hkey_handle &&
d6fdd1e9
HMH		 1655 acpi_evalf(hkey_handle, &status, "GWAN", "qd");
1656
1657 vdbg_printk(TPACPI_DBG_INIT, "wan is %s, status 0x%02x\n",
1658 str_supported(tp_features.wan),
1659 status);
1660
d3a6ade4
HMH		 1661 if (tp_features.wan) {
1662 if (!(status & TP_ACPI_WANCARD_HWPRESENT)) {
1663 /* no wan hardware present in system */
1664 tp_features.wan = 0;
1665 dbg_printk(TPACPI_DBG_INIT,
1666 "wan hardware not installed\n");
1667 } else {
1668 res = sysfs_create_group(&tpacpi_pdev->dev.kobj,
1669 &wan_attr_group);
1670 if (res)
1671 return res;
1672 }
d6fdd1e9 1673 }
fe08bc4b 1674
d8fd94d9 1675 return (tp_features.wan)? 0 : 1;
42adb53c
JF		 1676}
1677
d3a6ade4
HMH		 1678static void wan_exit(void)
1679{
1680 sysfs_remove_group(&tpacpi_pdev->dev.kobj,
1681 &wan_attr_group);
1682}
1683
d6fdd1e9 1684static int wan_get_radiosw(void)
42adb53c
JF		 1685{
1686 int status;
1687
d6fdd1e9
HMH		 1688 if (!tp_features.wan)
1689 return -ENODEV;
42adb53c 1690
d6fdd1e9
HMH		 1691 if (!acpi_evalf(hkey_handle, &status, "GWAN", "d"))
1692 return -EIO;
1693
1694 return ((status & TP_ACPI_WANCARD_RADIOSSW) != 0);
1695}
1696
1697static int wan_set_radiosw(int radio_on)
1698{
1699 int status;
1700
1701 if (!tp_features.wan)
1702 return -ENODEV;
1703
1704 if (!acpi_evalf(hkey_handle, &status, "GWAN", "d"))
1705 return -EIO;
1706 if (radio_on)
1707 status |= TP_ACPI_WANCARD_RADIOSSW;
1708 else
1709 status &= ~TP_ACPI_WANCARD_RADIOSSW;
1710 if (!acpi_evalf(hkey_handle, NULL, "SWAN", "vd", status))
1711 return -EIO;
1712
1713 return 0;
42adb53c
JF		 1714}
1715
d3a6ade4 1716/* procfs -------------------------------------------------------------- */
42adb53c
JF		 1717static int wan_read(char *p)
1718{
1719 int len = 0;
d6fdd1e9 1720 int status = wan_get_radiosw();
42adb53c 1721
d8fd94d9 1722 if (!tp_features.wan)
42adb53c 1723 len += sprintf(p + len, "status:\t\tnot supported\n");
42adb53c 1724 else {
d6fdd1e9
HMH		 1725 len += sprintf(p + len, "status:\t\t%s\n",
1726 (status)? "enabled" : "disabled");
42adb53c
JF		 1727 len += sprintf(p + len, "commands:\tenable, disable\n");
1728 }
1729
1730 return len;
1731}
1732
1733static int wan_write(char *buf)
1734{
42adb53c 1735 char *cmd;
42adb53c 1736
d8fd94d9 1737 if (!tp_features.wan)
42adb53c
JF		 1738 return -ENODEV;
1739
1740 while ((cmd = next_cmd(&buf))) {
1741 if (strlencmp(cmd, "enable") == 0) {
d6fdd1e9 1742 wan_set_radiosw(1);
42adb53c 1743 } else if (strlencmp(cmd, "disable") == 0) {
d6fdd1e9 1744 wan_set_radiosw(0);
42adb53c
JF		 1745 } else
1746 return -EINVAL;
42adb53c
JF		 1747 }
1748
42adb53c
JF		 1749 return 0;
1750}
1751
a5763f22
HMH		 1752static struct ibm_struct wan_driver_data = {
1753 .name = "wan",
1754 .read = wan_read,
1755 .write = wan_write,
d3a6ade4 1756 .exit = wan_exit,
92641177 1757 .flags.experimental = 1,
a5763f22
HMH		 1758};
1759
56b6aeb0
HMH		 1760/*************************************************************************
1761 * Video subdriver
1762 */
1763
9a8e1738
HMH		 1764static enum video_access_mode video_supported;
1765static int video_orig_autosw;
78f81cc4 1766
56b6aeb0
HMH		 1767IBM_HANDLE(vid, root, "\\_SB.PCI.AGP.VGA", /* 570 */
1768 "\\_SB.PCI0.AGP0.VID0", /* 600e/x, 770x */
1769 "\\_SB.PCI0.VID0", /* 770e */
1770 "\\_SB.PCI0.VID", /* A21e, G4x, R50e, X30, X40 */
1771 "\\_SB.PCI0.AGP.VID", /* all others */
1772 ); /* R30, R31 */
1773
1774IBM_HANDLE(vid2, root, "\\_SB.PCI0.AGPB.VID"); /* G41 */
1775
a5763f22 1776static int __init video_init(struct ibm_init_struct *iibm)
1da177e4 1777{
78f81cc4
BD		 1778 int ivga;
1779
fe08bc4b
HMH		 1780 vdbg_printk(TPACPI_DBG_INIT, "initializing video subdriver\n");
1781
8d376cd6
HMH		 1782 IBM_ACPIHANDLE_INIT(vid);
1783 IBM_ACPIHANDLE_INIT(vid2);
5fba344c 1784
78f81cc4
BD		 1785 if (vid2_handle && acpi_evalf(NULL, &ivga, "\\IVGA", "d") && ivga)
1786 /* G41, assume IVGA doesn't change */
1787 vid_handle = vid2_handle;
1788
1789 if (!vid_handle)
1790 /* video switching not supported on R30, R31 */
efa27145 1791 video_supported = TPACPI_VIDEO_NONE;
78f81cc4
BD		 1792 else if (acpi_evalf(vid_handle, &video_orig_autosw, "SWIT", "qd"))
1793 /* 570 */
efa27145 1794 video_supported = TPACPI_VIDEO_570;
78f81cc4
BD		 1795 else if (acpi_evalf(vid_handle, &video_orig_autosw, "^VADL", "qd"))
1796 /* 600e/x, 770e, 770x */
efa27145 1797 video_supported = TPACPI_VIDEO_770;
78f81cc4
BD		 1798 else
1799 /* all others */
efa27145 1800 video_supported = TPACPI_VIDEO_NEW;
1da177e4 1801
fe08bc4b
HMH		 1802 vdbg_printk(TPACPI_DBG_INIT, "video is %s, mode %d\n",
1803 str_supported(video_supported != TPACPI_VIDEO_NONE),
1804 video_supported);
1805
5fba344c 1806 return (video_supported != TPACPI_VIDEO_NONE)? 0 : 1;
1da177e4
LT		 1807}
1808
56b6aeb0
HMH		 1809static void video_exit(void)
1810{
83f34724
HMH		 1811 dbg_printk(TPACPI_DBG_EXIT,
1812 "restoring original video autoswitch mode\n");
1813 if (video_autosw_set(video_orig_autosw))
1814 printk(IBM_ERR "error while trying to restore original "
1815 "video autoswitch mode\n");
56b6aeb0
HMH		 1816}
1817
83f34724 1818static int video_outputsw_get(void)
1da177e4
LT		 1819{
1820 int status = 0;
1821 int i;
1822
83f34724
HMH		 1823 switch (video_supported) {
1824 case TPACPI_VIDEO_570:
1825 if (!acpi_evalf(NULL, &i, "\\_SB.PHS", "dd",
1826 TP_ACPI_VIDEO_570_PHSCMD))
1827 return -EIO;
1828 status = i & TP_ACPI_VIDEO_570_PHSMASK;
1829 break;
1830 case TPACPI_VIDEO_770:
1831 if (!acpi_evalf(NULL, &i, "\\VCDL", "d"))
1832 return -EIO;
1833 if (i)
1834 status |= TP_ACPI_VIDEO_S_LCD;
1835 if (!acpi_evalf(NULL, &i, "\\VCDC", "d"))
1836 return -EIO;
1837 if (i)
1838 status |= TP_ACPI_VIDEO_S_CRT;
1839 break;
1840 case TPACPI_VIDEO_NEW:
1841 if (!acpi_evalf(NULL, NULL, "\\VUPS", "vd", 1) ||
1842 !acpi_evalf(NULL, &i, "\\VCDC", "d"))
1843 return -EIO;
1844 if (i)
1845 status |= TP_ACPI_VIDEO_S_CRT;
1846
1847 if (!acpi_evalf(NULL, NULL, "\\VUPS", "vd", 0) ||
1848 !acpi_evalf(NULL, &i, "\\VCDL", "d"))
1849 return -EIO;
1850 if (i)
1851 status |= TP_ACPI_VIDEO_S_LCD;
1852 if (!acpi_evalf(NULL, &i, "\\VCDD", "d"))
1853 return -EIO;
1854 if (i)
1855 status |= TP_ACPI_VIDEO_S_DVI;
1856 break;
1857 default:
1858 return -ENOSYS;
78f81cc4
BD		 1859 }
1860
1861 return status;
1862}
1da177e4 1863
83f34724 1864static int video_outputsw_set(int status)
78f81cc4 1865{
83f34724
HMH		 1866 int autosw;
1867 int res = 0;
1868
1869 switch (video_supported) {
1870 case TPACPI_VIDEO_570:
1871 res = acpi_evalf(NULL, NULL,
1872 "\\_SB.PHS2", "vdd",
1873 TP_ACPI_VIDEO_570_PHS2CMD,
1874 status | TP_ACPI_VIDEO_570_PHS2SET);
1875 break;
1876 case TPACPI_VIDEO_770:
1877 autosw = video_autosw_get();
1878 if (autosw < 0)
1879 return autosw;
1da177e4 1880
83f34724
HMH		 1881 res = video_autosw_set(1);
1882 if (res)
1883 return res;
1884 res = acpi_evalf(vid_handle, NULL,
1885 "ASWT", "vdd", status * 0x100, 0);
1886 if (!autosw && video_autosw_set(autosw)) {
1887 printk(IBM_ERR "video auto-switch left enabled due to error\n");
1888 return -EIO;
1889 }
1890 break;
1891 case TPACPI_VIDEO_NEW:
1892 res = acpi_evalf(NULL, NULL, "\\VUPS", "vd", 0x80) &&
1893 acpi_evalf(NULL, NULL, "\\VSDS", "vdd", status, 1);
1894 break;
1895 default:
1896 return -ENOSYS;
1897 }
1da177e4 1898
83f34724 1899 return (res)? 0 : -EIO;
1da177e4
LT		 1900}
1901
83f34724 1902static int video_autosw_get(void)
78f81cc4 1903{
83f34724 1904 int autosw = 0;
78f81cc4 1905
83f34724
HMH		 1906 switch (video_supported) {
1907 case TPACPI_VIDEO_570:
1908 if (!acpi_evalf(vid_handle, &autosw, "SWIT", "d"))
1909 return -EIO;
1910 break;
1911 case TPACPI_VIDEO_770:
1912 case TPACPI_VIDEO_NEW:
1913 if (!acpi_evalf(vid_handle, &autosw, "^VDEE", "d"))
1914 return -EIO;
1915 break;
1916 default:
1917 return -ENOSYS;
1918 }
78f81cc4 1919
83f34724 1920 return autosw & 1;
78f81cc4
BD		 1921}
1922
83f34724 1923static int video_autosw_set(int enable)
78f81cc4 1924{
83f34724
HMH		 1925 if (!acpi_evalf(vid_handle, NULL, "_DOS", "vd", (enable)? 1 : 0))
1926 return -EIO;
1927 return 0;
78f81cc4
BD		 1928}
1929
83f34724 1930static int video_outputsw_cycle(void)
78f81cc4 1931{
83f34724
HMH		 1932 int autosw = video_autosw_get();
1933 int res;
78f81cc4 1934
83f34724
HMH		 1935 if (autosw < 0)
1936 return autosw;
78f81cc4 1937
83f34724
HMH		 1938 switch (video_supported) {
1939 case TPACPI_VIDEO_570:
1940 res = video_autosw_set(1);
1941 if (res)
1942 return res;
1943 res = acpi_evalf(ec_handle, NULL, "_Q16", "v");
1944 break;
1945 case TPACPI_VIDEO_770:
1946 case TPACPI_VIDEO_NEW:
1947 res = video_autosw_set(1);
1948 if (res)
1949 return res;
1950 res = acpi_evalf(vid_handle, NULL, "VSWT", "v");
1951 break;
1952 default:
1953 return -ENOSYS;
1954 }
1955 if (!autosw && video_autosw_set(autosw)) {
1956 printk(IBM_ERR "video auto-switch left enabled due to error\n");
1957 return -EIO;
78f81cc4
BD		 1958 }
1959
83f34724
HMH		 1960 return (res)? 0 : -EIO;
1961}
1962
1963static int video_expand_toggle(void)
1964{
1965 switch (video_supported) {
1966 case TPACPI_VIDEO_570:
1967 return acpi_evalf(ec_handle, NULL, "_Q17", "v")?
1968 0 : -EIO;
1969 case TPACPI_VIDEO_770:
1970 return acpi_evalf(vid_handle, NULL, "VEXP", "v")?
1971 0 : -EIO;
1972 case TPACPI_VIDEO_NEW:
1973 return acpi_evalf(NULL, NULL, "\\VEXP", "v")?
1974 0 : -EIO;
1975 default:
1976 return -ENOSYS;
1977 }
1978 /* not reached */
78f81cc4
BD		 1979}
1980
56b6aeb0
HMH		 1981static int video_read(char *p)
1982{
83f34724 1983 int status, autosw;
56b6aeb0
HMH		 1984 int len = 0;
1985
83f34724 1986 if (video_supported == TPACPI_VIDEO_NONE) {
56b6aeb0
HMH		 1987 len += sprintf(p + len, "status:\t\tnot supported\n");
1988 return len;
1989 }
1990
83f34724
HMH		 1991 status = video_outputsw_get();
1992 if (status < 0)
1993 return status;
1994
1995 autosw = video_autosw_get();
1996 if (autosw < 0)
1997 return autosw;
1998
56b6aeb0
HMH		 1999 len += sprintf(p + len, "status:\t\tsupported\n");
2000 len += sprintf(p + len, "lcd:\t\t%s\n", enabled(status, 0));
2001 len += sprintf(p + len, "crt:\t\t%s\n", enabled(status, 1));
efa27145 2002 if (video_supported == TPACPI_VIDEO_NEW)
56b6aeb0
HMH		 2003 len += sprintf(p + len, "dvi:\t\t%s\n", enabled(status, 3));
2004 len += sprintf(p + len, "auto:\t\t%s\n", enabled(autosw, 0));
2005 len += sprintf(p + len, "commands:\tlcd_enable, lcd_disable\n");
2006 len += sprintf(p + len, "commands:\tcrt_enable, crt_disable\n");
efa27145 2007 if (video_supported == TPACPI_VIDEO_NEW)
56b6aeb0
HMH		 2008 len += sprintf(p + len, "commands:\tdvi_enable, dvi_disable\n");
2009 len += sprintf(p + len, "commands:\tauto_enable, auto_disable\n");
2010 len += sprintf(p + len, "commands:\tvideo_switch, expand_toggle\n");
2011
2012 return len;
2013}
2014
78f81cc4 2015static int video_write(char *buf)
1da177e4
LT		 2016{
2017 char *cmd;
2018 int enable, disable, status;
83f34724 2019 int res;
1da177e4 2020
83f34724 2021 if (video_supported == TPACPI_VIDEO_NONE)
78f81cc4
BD		 2022 return -ENODEV;
2023
83f34724
HMH		 2024 enable = 0;
2025 disable = 0;
1da177e4
LT		 2026
2027 while ((cmd = next_cmd(&buf))) {
2028 if (strlencmp(cmd, "lcd_enable") == 0) {
83f34724 2029 enable |= TP_ACPI_VIDEO_S_LCD;
1da177e4 2030 } else if (strlencmp(cmd, "lcd_disable") == 0) {
83f34724 2031 disable |= TP_ACPI_VIDEO_S_LCD;
1da177e4 2032 } else if (strlencmp(cmd, "crt_enable") == 0) {
83f34724 2033 enable |= TP_ACPI_VIDEO_S_CRT;
1da177e4 2034 } else if (strlencmp(cmd, "crt_disable") == 0) {
83f34724 2035 disable |= TP_ACPI_VIDEO_S_CRT;
efa27145 2036 } else if (video_supported == TPACPI_VIDEO_NEW &&
78f81cc4 2037 strlencmp(cmd, "dvi_enable") == 0) {
83f34724 2038 enable |= TP_ACPI_VIDEO_S_DVI;
efa27145 2039 } else if (video_supported == TPACPI_VIDEO_NEW &&
78f81cc4 2040 strlencmp(cmd, "dvi_disable") == 0) {
83f34724 2041 disable |= TP_ACPI_VIDEO_S_DVI;
1da177e4 2042 } else if (strlencmp(cmd, "auto_enable") == 0) {
83f34724
HMH		 2043 res = video_autosw_set(1);
2044 if (res)
2045 return res;
1da177e4 2046 } else if (strlencmp(cmd, "auto_disable") == 0) {
83f34724
HMH		 2047 res = video_autosw_set(0);
2048 if (res)
2049 return res;
1da177e4 2050 } else if (strlencmp(cmd, "video_switch") == 0) {
83f34724
HMH		 2051 res = video_outputsw_cycle();
2052 if (res)
2053 return res;
1da177e4 2054 } else if (strlencmp(cmd, "expand_toggle") == 0) {
83f34724
HMH		 2055 res = video_expand_toggle();
2056 if (res)
2057 return res;
1da177e4
LT		 2058 } else
2059 return -EINVAL;
2060 }
2061
2062 if (enable || disable) {
83f34724
HMH		 2063 status = video_outputsw_get();
2064 if (status < 0)
2065 return status;
2066 res = video_outputsw_set((status & ~disable) | enable);
2067 if (res)
2068 return res;
1da177e4
LT		 2069 }
2070
2071 return 0;
2072}
2073
a5763f22
HMH		 2074static struct ibm_struct video_driver_data = {
2075 .name = "video",
2076 .read = video_read,
2077 .write = video_write,
2078 .exit = video_exit,
2079};
2080
56b6aeb0
HMH		 2081/*************************************************************************
2082 * Light (thinklight) subdriver
2083 */
1da177e4 2084
56b6aeb0
HMH		 2085IBM_HANDLE(lght, root, "\\LGHT"); /* A21e, A2xm/p, T20-22, X20-21 */
2086IBM_HANDLE(ledb, ec, "LEDB"); /* G4x */
2087
a5763f22 2088static int __init light_init(struct ibm_init_struct *iibm)
1da177e4 2089{
fe08bc4b
HMH		 2090 vdbg_printk(TPACPI_DBG_INIT, "initializing light subdriver\n");
2091
8d376cd6
HMH		 2092 IBM_ACPIHANDLE_INIT(ledb);
2093 IBM_ACPIHANDLE_INIT(lght);
2094 IBM_ACPIHANDLE_INIT(cmos);
5fba344c 2095
78f81cc4 2096 /* light not supported on 570, 600e/x, 770e, 770x, G4x, R30, R31 */
d8fd94d9 2097 tp_features.light = (cmos_handle || lght_handle) && !ledb_handle;
78f81cc4 2098
d8fd94d9 2099 if (tp_features.light)
78f81cc4
BD		 2100 /* light status not supported on
2101 570, 600e/x, 770e, 770x, G4x, R30, R31, R32, X20 */
d8fd94d9
HMH		 2102 tp_features.light_status =
2103 acpi_evalf(ec_handle, NULL, "KBLT", "qv");
1da177e4 2104
fe08bc4b 2105 vdbg_printk(TPACPI_DBG_INIT, "light is %s\n",
d8fd94d9 2106 str_supported(tp_features.light));
fe08bc4b 2107
d8fd94d9 2108 return (tp_features.light)? 0 : 1;
1da177e4
LT		 2109}
2110
78f81cc4 2111static int light_read(char *p)
1da177e4
LT		 2112{
2113 int len = 0;
2114 int status = 0;
2115
d8fd94d9 2116 if (!tp_features.light) {
78f81cc4 2117 len += sprintf(p + len, "status:\t\tnot supported\n");
d8fd94d9 2118 } else if (!tp_features.light_status) {
78f81cc4
BD		 2119 len += sprintf(p + len, "status:\t\tunknown\n");
2120 len += sprintf(p + len, "commands:\ton, off\n");
2121 } else {
1da177e4
LT		 2122 if (!acpi_evalf(ec_handle, &status, "KBLT", "d"))
2123 return -EIO;
2124 len += sprintf(p + len, "status:\t\t%s\n", onoff(status, 0));
78f81cc4
BD		 2125 len += sprintf(p + len, "commands:\ton, off\n");
2126 }
1da177e4
LT		 2127
2128 return len;
2129}
2130
78f81cc4 2131static int light_write(char *buf)
1da177e4
LT		 2132{
2133 int cmos_cmd, lght_cmd;
2134 char *cmd;
2135 int success;
78f81cc4 2136
d8fd94d9 2137 if (!tp_features.light)
78f81cc4
BD		 2138 return -ENODEV;
2139
1da177e4
LT		 2140 while ((cmd = next_cmd(&buf))) {
2141 if (strlencmp(cmd, "on") == 0) {
2142 cmos_cmd = 0x0c;
2143 lght_cmd = 1;
2144 } else if (strlencmp(cmd, "off") == 0) {
2145 cmos_cmd = 0x0d;
2146 lght_cmd = 0;
2147 } else
2148 return -EINVAL;
78f81cc4 2149
1da177e4 2150 success = cmos_handle ?
78f81cc4
BD		 2151 acpi_evalf(cmos_handle, NULL, NULL, "vd", cmos_cmd) :
2152 acpi_evalf(lght_handle, NULL, NULL, "vd", lght_cmd);
1da177e4
LT		 2153 if (!success)
2154 return -EIO;
2155 }
2156
2157 return 0;
2158}
2159
a5763f22
HMH		 2160static struct ibm_struct light_driver_data = {
2161 .name = "light",
2162 .read = light_read,
2163 .write = light_write,
2164};
2165
56b6aeb0
HMH		 2166/*************************************************************************
2167 * Dock subdriver
2168 */
1da177e4 2169
85998248 2170#ifdef CONFIG_THINKPAD_ACPI_DOCK
56b6aeb0
HMH		 2171
2172IBM_HANDLE(dock, root, "\\_SB.GDCK", /* X30, X31, X40 */
2173 "\\_SB.PCI0.DOCK", /* 600e/x,770e,770x,A2xm/p,T20-22,X20-21 */
2174 "\\_SB.PCI0.PCI1.DOCK", /* all others */
2175 "\\_SB.PCI.ISA.SLCE", /* 570 */
2176 ); /* A21e,G4x,R30,R31,R32,R40,R40e,R50e */
2177
5fba344c
HMH		 2178/* don't list other alternatives as we install a notify handler on the 570 */
2179IBM_HANDLE(pci, root, "\\_SB.PCI"); /* 570 */
2180
1ba90e3a
TR		 2181static const struct acpi_device_id ibm_pci_device_ids[] = {
2182 {PCI_ROOT_HID_STRING, 0},
2183 {"", 0},
2184};
2185
d94a7f16
HMH		 2186static struct tp_acpi_drv_struct ibm_dock_acpidriver[2] = {
2187 {
2188 .notify = dock_notify,
2189 .handle = &dock_handle,
2190 .type = ACPI_SYSTEM_NOTIFY,
2191 },
2192 {
996fba08
HMH		 2193 /* THIS ONE MUST NEVER BE USED FOR DRIVER AUTOLOADING.
2194 * We just use it to get notifications of dock hotplug
2195 * in very old thinkpads */
1ba90e3a 2196 .hid = ibm_pci_device_ids,
d94a7f16
HMH		 2197 .notify = dock_notify,
2198 .handle = &pci_handle,
2199 .type = ACPI_SYSTEM_NOTIFY,
2200 },
2201};
2202
2203static struct ibm_struct dock_driver_data[2] = {
2204 {
2205 .name = "dock",
2206 .read = dock_read,
2207 .write = dock_write,
2208 .acpi = &ibm_dock_acpidriver[0],
2209 },
2210 {
2211 .name = "dock",
2212 .acpi = &ibm_dock_acpidriver[1],
2213 },
2214};
2215
1da177e4
LT		 2216#define dock_docked() (_sta(dock_handle) & 1)
2217
a5763f22 2218static int __init dock_init(struct ibm_init_struct *iibm)
5fba344c 2219{
fe08bc4b
HMH		 2220 vdbg_printk(TPACPI_DBG_INIT, "initializing dock subdriver\n");
2221
8d376cd6 2222 IBM_ACPIHANDLE_INIT(dock);
5fba344c 2223
fe08bc4b
HMH		 2224 vdbg_printk(TPACPI_DBG_INIT, "dock is %s\n",
2225 str_supported(dock_handle != NULL));
2226
5fba344c
HMH		 2227 return (dock_handle)? 0 : 1;
2228}
2229
d94a7f16
HMH		 2230static int __init dock_init2(struct ibm_init_struct *iibm)
2231{
2232 int dock2_needed;
2233
2234 vdbg_printk(TPACPI_DBG_INIT, "initializing dock subdriver part 2\n");
2235
2236 if (dock_driver_data[0].flags.acpi_driver_registered &&
2237 dock_driver_data[0].flags.acpi_notify_installed) {
2238 IBM_ACPIHANDLE_INIT(pci);
2239 dock2_needed = (pci_handle != NULL);
2240 vdbg_printk(TPACPI_DBG_INIT,
2241 "dock PCI handler for the TP 570 is %s\n",
2242 str_supported(dock2_needed));
2243 } else {
2244 vdbg_printk(TPACPI_DBG_INIT,
2245 "dock subdriver part 2 not required\n");
2246 dock2_needed = 0;
2247 }
2248
2249 return (dock2_needed)? 0 : 1;
2250}
2251
56b6aeb0
HMH		 2252static void dock_notify(struct ibm_struct *ibm, u32 event)
2253{
2254 int docked = dock_docked();
1ba90e3a
TR		 2255 int pci = ibm->acpi->hid && ibm->acpi->device &&
2256 acpi_match_device_ids(ibm->acpi->device, ibm_pci_device_ids);
962ce8ca 2257 int data;
56b6aeb0
HMH		 2258
2259 if (event == 1 && !pci) /* 570 */
962ce8ca 2260 data = 1; /* button */
56b6aeb0 2261 else if (event == 1 && pci) /* 570 */
962ce8ca 2262 data = 3; /* dock */
56b6aeb0 2263 else if (event == 3 && docked)
962ce8ca 2264 data = 1; /* button */
56b6aeb0 2265 else if (event == 3 && !docked)
962ce8ca 2266 data = 2; /* undock */
56b6aeb0 2267 else if (event == 0 && docked)
962ce8ca 2268 data = 3; /* dock */
56b6aeb0
HMH		 2269 else {
2270 printk(IBM_ERR "unknown dock event %d, status %d\n",
2271 event, _sta(dock_handle));
962ce8ca 2272 data = 0; /* unknown */
56b6aeb0 2273 }
14e04fb3 2274 acpi_bus_generate_proc_event(ibm->acpi->device, event, data);
962ce8ca
ZR		 2275 acpi_bus_generate_netlink_event(ibm->acpi->device->pnp.device_class,
2276 ibm->acpi->device->dev.bus_id,
2277 event, data);
56b6aeb0
HMH		 2278}
2279
78f81cc4 2280static int dock_read(char *p)
1da177e4
LT		 2281{
2282 int len = 0;
2283 int docked = dock_docked();
2284
2285 if (!dock_handle)
2286 len += sprintf(p + len, "status:\t\tnot supported\n");
2287 else if (!docked)
2288 len += sprintf(p + len, "status:\t\tundocked\n");
2289 else {
2290 len += sprintf(p + len, "status:\t\tdocked\n");
2291 len += sprintf(p + len, "commands:\tdock, undock\n");
2292 }
2293
2294 return len;
2295}
2296
78f81cc4 2297static int dock_write(char *buf)
1da177e4
LT		 2298{
2299 char *cmd;
2300
2301 if (!dock_docked())
78f81cc4 2302 return -ENODEV;
1da177e4
LT		 2303
2304 while ((cmd = next_cmd(&buf))) {
2305 if (strlencmp(cmd, "undock") == 0) {
78f81cc4
BD		 2306 if (!acpi_evalf(dock_handle, NULL, "_DCK", "vd", 0) ||
2307 !acpi_evalf(dock_handle, NULL, "_EJ0", "vd", 1))
56b6aeb0
HMH		 2308 return -EIO;
2309 } else if (strlencmp(cmd, "dock") == 0) {
2310 if (!acpi_evalf(dock_handle, NULL, "_DCK", "vd", 1))
2311 return -EIO;
2312 } else
2313 return -EINVAL;
1da177e4 2314 }
56b6aeb0
HMH		 2315
2316 return 0;
1da177e4 2317}
56b6aeb0 2318
85998248 2319#endif /* CONFIG_THINKPAD_ACPI_DOCK */
56b6aeb0
HMH		 2320
2321/*************************************************************************
2322 * Bay subdriver
2323 */
1da177e4 2324
85998248 2325#ifdef CONFIG_THINKPAD_ACPI_BAY
56b6aeb0
HMH		 2326IBM_HANDLE(bay, root, "\\_SB.PCI.IDE.SECN.MAST", /* 570 */
2327 "\\_SB.PCI0.IDE0.IDES.IDSM", /* 600e/x, 770e, 770x */
2328 "\\_SB.PCI0.SATA.SCND.MSTR", /* T60, X60, Z60 */
2329 "\\_SB.PCI0.IDE0.SCND.MSTR", /* all others */
2330 ); /* A21e, R30, R31 */
2331IBM_HANDLE(bay_ej, bay, "_EJ3", /* 600e/x, A2xm/p, A3x */
2332 "_EJ0", /* all others */
2333 ); /* 570,A21e,G4x,R30,R31,R32,R40e,R50e */
2334IBM_HANDLE(bay2, root, "\\_SB.PCI0.IDE0.PRIM.SLAV", /* A3x, R32 */
2335 "\\_SB.PCI0.IDE0.IDEP.IDPS", /* 600e/x, 770e, 770x */
2336 ); /* all others */
2337IBM_HANDLE(bay2_ej, bay2, "_EJ3", /* 600e/x, 770e, A3x */
2338 "_EJ0", /* 770x */
2339 ); /* all others */
2340
a5763f22 2341static int __init bay_init(struct ibm_init_struct *iibm)
1da177e4 2342{
fe08bc4b
HMH		 2343 vdbg_printk(TPACPI_DBG_INIT, "initializing bay subdriver\n");
2344
8d376cd6 2345 IBM_ACPIHANDLE_INIT(bay);
5fba344c 2346 if (bay_handle)
8d376cd6
HMH		 2347 IBM_ACPIHANDLE_INIT(bay_ej);
2348 IBM_ACPIHANDLE_INIT(bay2);
5fba344c 2349 if (bay2_handle)
8d376cd6 2350 IBM_ACPIHANDLE_INIT(bay2_ej);
5fba344c 2351
d8fd94d9
HMH		 2352 tp_features.bay_status = bay_handle &&
2353 acpi_evalf(bay_handle, NULL, "_STA", "qv");
2354 tp_features.bay_status2 = bay2_handle &&
2355 acpi_evalf(bay2_handle, NULL, "_STA", "qv");
78f81cc4 2356
d8fd94d9
HMH		 2357 tp_features.bay_eject = bay_handle && bay_ej_handle &&
2358 (strlencmp(bay_ej_path, "_EJ0") == 0 || experimental);
2359 tp_features.bay_eject2 = bay2_handle && bay2_ej_handle &&
2360 (strlencmp(bay2_ej_path, "_EJ0") == 0 || experimental);
1da177e4 2361
fe08bc4b
HMH		 2362 vdbg_printk(TPACPI_DBG_INIT,
2363 "bay 1: status %s, eject %s; bay 2: status %s, eject %s\n",
d8fd94d9
HMH		 2364 str_supported(tp_features.bay_status),
2365 str_supported(tp_features.bay_eject),
2366 str_supported(tp_features.bay_status2),
2367 str_supported(tp_features.bay_eject2));
fe08bc4b 2368
d8fd94d9
HMH		 2369 return (tp_features.bay_status || tp_features.bay_eject ||
2370 tp_features.bay_status2 || tp_features.bay_eject2)? 0 : 1;
1da177e4
LT		 2371}
2372
56b6aeb0
HMH		 2373static void bay_notify(struct ibm_struct *ibm, u32 event)
2374{
14e04fb3 2375 acpi_bus_generate_proc_event(ibm->acpi->device, event, 0);
962ce8ca
ZR		 2376 acpi_bus_generate_netlink_event(ibm->acpi->device->pnp.device_class,
2377 ibm->acpi->device->dev.bus_id,
2378 event, 0);
56b6aeb0
HMH		 2379}
2380
78f81cc4
BD		 2381#define bay_occupied(b) (_sta(b##_handle) & 1)
2382
2383static int bay_read(char *p)
1da177e4
LT		 2384{
2385 int len = 0;
78f81cc4
BD		 2386 int occupied = bay_occupied(bay);
2387 int occupied2 = bay_occupied(bay2);
2388 int eject, eject2;
2389
d8fd94d9
HMH		 2390 len += sprintf(p + len, "status:\t\t%s\n",
2391 tp_features.bay_status ?
2392 (occupied ? "occupied" : "unoccupied") :
2393 "not supported");
2394 if (tp_features.bay_status2)
78f81cc4
BD		 2395 len += sprintf(p + len, "status2:\t%s\n", occupied2 ?
2396 "occupied" : "unoccupied");
2397
d8fd94d9
HMH		 2398 eject = tp_features.bay_eject && occupied;
2399 eject2 = tp_features.bay_eject2 && occupied2;
78f81cc4
BD		 2400
2401 if (eject && eject2)
2402 len += sprintf(p + len, "commands:\teject, eject2\n");
2403 else if (eject)
1da177e4 2404 len += sprintf(p + len, "commands:\teject\n");
78f81cc4
BD		 2405 else if (eject2)
2406 len += sprintf(p + len, "commands:\teject2\n");
1da177e4
LT		 2407
2408 return len;
2409}
2410
78f81cc4 2411static int bay_write(char *buf)
1da177e4
LT		 2412{
2413 char *cmd;
2414
d8fd94d9 2415 if (!tp_features.bay_eject && !tp_features.bay_eject2)
78f81cc4
BD		 2416 return -ENODEV;
2417
1da177e4 2418 while ((cmd = next_cmd(&buf))) {
d8fd94d9 2419 if (tp_features.bay_eject && strlencmp(cmd, "eject") == 0) {
78f81cc4
BD		 2420 if (!acpi_evalf(bay_ej_handle, NULL, NULL, "vd", 1))
2421 return -EIO;
d8fd94d9 2422 } else if (tp_features.bay_eject2 &&
78f81cc4
BD		 2423 strlencmp(cmd, "eject2") == 0) {
2424 if (!acpi_evalf(bay2_ej_handle, NULL, NULL, "vd", 1))
1da177e4
LT		 2425 return -EIO;
2426 } else
2427 return -EINVAL;
2428 }
2429
2430 return 0;
78f81cc4 2431}
a5763f22 2432
8d376cd6
HMH		 2433static struct tp_acpi_drv_struct ibm_bay_acpidriver = {
2434 .notify = bay_notify,
2435 .handle = &bay_handle,
2436 .type = ACPI_SYSTEM_NOTIFY,
2437};
2438
a5763f22
HMH		 2439static struct ibm_struct bay_driver_data = {
2440 .name = "bay",
2441 .read = bay_read,
2442 .write = bay_write,
8d376cd6 2443 .acpi = &ibm_bay_acpidriver,
a5763f22
HMH		 2444};
2445
85998248 2446#endif /* CONFIG_THINKPAD_ACPI_BAY */
1da177e4 2447
56b6aeb0
HMH		 2448/*************************************************************************
2449 * CMOS subdriver
2450 */
2451
b616004c
HMH		 2452/* sysfs cmos_command -------------------------------------------------- */
2453static ssize_t cmos_command_store(struct device *dev,
2454 struct device_attribute *attr,
2455 const char *buf, size_t count)
2456{
2457 unsigned long cmos_cmd;
2458 int res;
2459
2460 if (parse_strtoul(buf, 21, &cmos_cmd))
2461 return -EINVAL;
2462
2463 res = issue_thinkpad_cmos_command(cmos_cmd);
2464 return (res)? res : count;
2465}
2466
2467static struct device_attribute dev_attr_cmos_command =
2468 __ATTR(cmos_command, S_IWUSR, NULL, cmos_command_store);
2469
2470/* --------------------------------------------------------------------- */
2471
a5763f22 2472static int __init cmos_init(struct ibm_init_struct *iibm)
5fba344c 2473{
b616004c
HMH		 2474 int res;
2475
fe08bc4b
HMH		 2476 vdbg_printk(TPACPI_DBG_INIT,
2477 "initializing cmos commands subdriver\n");
2478
8d376cd6 2479 IBM_ACPIHANDLE_INIT(cmos);
5fba344c 2480
fe08bc4b
HMH		 2481 vdbg_printk(TPACPI_DBG_INIT, "cmos commands are %s\n",
2482 str_supported(cmos_handle != NULL));
b616004c
HMH		 2483
2484 res = device_create_file(&tpacpi_pdev->dev, &dev_attr_cmos_command);
2485 if (res)
2486 return res;
2487
5fba344c
HMH		 2488 return (cmos_handle)? 0 : 1;
2489}
2490
b616004c
HMH		 2491static void cmos_exit(void)
2492{
2493 device_remove_file(&tpacpi_pdev->dev, &dev_attr_cmos_command);
2494}
2495
78f81cc4 2496static int cmos_read(char *p)
1da177e4
LT		 2497{
2498 int len = 0;
2499
78f81cc4
BD		 2500 /* cmos not supported on 570, 600e/x, 770e, 770x, A21e, A2xm/p,
2501 R30, R31, T20-22, X20-21 */
1da177e4
LT		 2502 if (!cmos_handle)
2503 len += sprintf(p + len, "status:\t\tnot supported\n");
2504 else {
2505 len += sprintf(p + len, "status:\t\tsupported\n");
78f81cc4 2506 len += sprintf(p + len, "commands:\t<cmd> (<cmd> is 0-21)\n");
1da177e4
LT		 2507 }
2508
2509 return len;
2510}
2511
78f81cc4 2512static int cmos_write(char *buf)
1da177e4
LT		 2513{
2514 char *cmd;
c9bea99c 2515 int cmos_cmd, res;
1da177e4
LT		 2516
2517 while ((cmd = next_cmd(&buf))) {
78f81cc4
BD		 2518 if (sscanf(cmd, "%u", &cmos_cmd) == 1 &&
2519 cmos_cmd >= 0 && cmos_cmd <= 21) {
1da177e4
LT		 2520 /* cmos_cmd set */
2521 } else
2522 return -EINVAL;
2523
c9bea99c
HMH		 2524 res = issue_thinkpad_cmos_command(cmos_cmd);
2525 if (res)
2526 return res;
1da177e4
LT		 2527 }
2528
2529 return 0;
78f81cc4
BD		 2530}
2531
a5763f22
HMH		 2532static struct ibm_struct cmos_driver_data = {
2533 .name = "cmos",
2534 .read = cmos_read,
2535 .write = cmos_write,
b616004c 2536 .exit = cmos_exit,
a5763f22 2537};
56b6aeb0
HMH		 2538
2539/*************************************************************************
2540 * LED subdriver
2541 */
2542
9a8e1738 2543static enum led_access_mode led_supported;
78f81cc4 2544
56b6aeb0
HMH		 2545IBM_HANDLE(led, ec, "SLED", /* 570 */
2546 "SYSL", /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20-21 */
2547 "LED", /* all others */
2548 ); /* R30, R31 */
2549
a5763f22 2550static int __init led_init(struct ibm_init_struct *iibm)
78f81cc4 2551{
fe08bc4b
HMH		 2552 vdbg_printk(TPACPI_DBG_INIT, "initializing LED subdriver\n");
2553
8d376cd6 2554 IBM_ACPIHANDLE_INIT(led);
5fba344c 2555
78f81cc4
BD		 2556 if (!led_handle)
2557 /* led not supported on R30, R31 */
efa27145 2558 led_supported = TPACPI_LED_NONE;
78f81cc4
BD		 2559 else if (strlencmp(led_path, "SLED") == 0)
2560 /* 570 */
efa27145 2561 led_supported = TPACPI_LED_570;
78f81cc4
BD		 2562 else if (strlencmp(led_path, "SYSL") == 0)
2563 /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20-21 */
efa27145 2564 led_supported = TPACPI_LED_OLD;
78f81cc4
BD		 2565 else
2566 /* all others */
efa27145 2567 led_supported = TPACPI_LED_NEW;
78f81cc4 2568
fe08bc4b
HMH		 2569 vdbg_printk(TPACPI_DBG_INIT, "LED commands are %s, mode %d\n",
2570 str_supported(led_supported), led_supported);
2571
5fba344c 2572 return (led_supported != TPACPI_LED_NONE)? 0 : 1;
78f81cc4
BD		 2573}
2574
2575#define led_status(s) ((s) == 0 ? "off" : ((s) == 1 ? "on" : "blinking"))
2576
2577static int led_read(char *p)
1da177e4
LT		 2578{
2579 int len = 0;
2580
78f81cc4
BD		 2581 if (!led_supported) {
2582 len += sprintf(p + len, "status:\t\tnot supported\n");
2583 return len;
2584 }
2585 len += sprintf(p + len, "status:\t\tsupported\n");
2586
efa27145 2587 if (led_supported == TPACPI_LED_570) {
78f81cc4
BD		 2588 /* 570 */
2589 int i, status;
2590 for (i = 0; i < 8; i++) {
2591 if (!acpi_evalf(ec_handle,
2592 &status, "GLED", "dd", 1 << i))
2593 return -EIO;
2594 len += sprintf(p + len, "%d:\t\t%s\n",
2595 i, led_status(status));
2596 }
2597 }
2598
1da177e4 2599 len += sprintf(p + len, "commands:\t"
78f81cc4 2600 "<led> on, <led> off, <led> blink (<led> is 0-7)\n");
1da177e4
LT		 2601
2602 return len;
2603}
2604
78f81cc4
BD		 2605/* off, on, blink */
2606static const int led_sled_arg1[] = { 0, 1, 3 };
2607static const int led_exp_hlbl[] = { 0, 0, 1 }; /* led# * */
2608static const int led_exp_hlcl[] = { 0, 1, 1 }; /* led# * */
2609static const int led_led_arg1[] = { 0, 0x80, 0xc0 };
2610
78f81cc4 2611static int led_write(char *buf)
1da177e4
LT		 2612{
2613 char *cmd;
78f81cc4
BD		 2614 int led, ind, ret;
2615
2616 if (!led_supported)
2617 return -ENODEV;
1da177e4
LT		 2618
2619 while ((cmd = next_cmd(&buf))) {
78f81cc4 2620 if (sscanf(cmd, "%d", &led) != 1 || led < 0 || led > 7)
1da177e4
LT		 2621 return -EINVAL;
2622
78f81cc4
BD		 2623 if (strstr(cmd, "off")) {
2624 ind = 0;
1da177e4 2625 } else if (strstr(cmd, "on")) {
78f81cc4
BD		 2626 ind = 1;
2627 } else if (strstr(cmd, "blink")) {
2628 ind = 2;
1da177e4
LT		 2629 } else
2630 return -EINVAL;
78f81cc4 2631
efa27145 2632 if (led_supported == TPACPI_LED_570) {
78f81cc4
BD		 2633 /* 570 */
2634 led = 1 << led;
1da177e4 2635 if (!acpi_evalf(led_handle, NULL, NULL, "vdd",
78f81cc4 2636 led, led_sled_arg1[ind]))
1da177e4 2637 return -EIO;
efa27145 2638 } else if (led_supported == TPACPI_LED_OLD) {
78f81cc4
BD		 2639 /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20 */
2640 led = 1 << led;
efa27145 2641 ret = ec_write(TPACPI_LED_EC_HLMS, led);
78f81cc4
BD		 2642 if (ret >= 0)
2643 ret =
efa27145 2644 ec_write(TPACPI_LED_EC_HLBL,
e062e034 2645 led * led_exp_hlbl[ind]);
78f81cc4
BD		 2646 if (ret >= 0)
2647 ret =
efa27145 2648 ec_write(TPACPI_LED_EC_HLCL,
e062e034 2649 led * led_exp_hlcl[ind]);
78f81cc4
BD		 2650 if (ret < 0)
2651 return ret;
2652 } else {
2653 /* all others */
2654 if (!acpi_evalf(led_handle, NULL, NULL, "vdd",
2655 led, led_led_arg1[ind]))
1da177e4 2656 return -EIO;
78f81cc4
BD		 2657 }
2658 }
2659
2660 return 0;
2661}
2662
a5763f22
HMH		 2663static struct ibm_struct led_driver_data = {
2664 .name = "led",
2665 .read = led_read,
2666 .write = led_write,
2667};
2668
56b6aeb0
HMH		 2669/*************************************************************************
2670 * Beep subdriver
2671 */
2672
2673IBM_HANDLE(beep, ec, "BEEP"); /* all except R30, R31 */
2674
a5763f22 2675static int __init beep_init(struct ibm_init_struct *iibm)
5fba344c 2676{
fe08bc4b
HMH		 2677 vdbg_printk(TPACPI_DBG_INIT, "initializing beep subdriver\n");
2678
8d376cd6 2679 IBM_ACPIHANDLE_INIT(beep);
5fba344c 2680
fe08bc4b
HMH		 2681 vdbg_printk(TPACPI_DBG_INIT, "beep is %s\n",
2682 str_supported(beep_handle != NULL));
2683
5fba344c
HMH		 2684 return (beep_handle)? 0 : 1;
2685}
2686
78f81cc4
BD		 2687static int beep_read(char *p)
2688{
2689 int len = 0;
2690
2691 if (!beep_handle)
2692 len += sprintf(p + len, "status:\t\tnot supported\n");
2693 else {
2694 len += sprintf(p + len, "status:\t\tsupported\n");
2695 len += sprintf(p + len, "commands:\t<cmd> (<cmd> is 0-17)\n");
2696 }
2697
2698 return len;
2699}
2700
2701static int beep_write(char *buf)
2702{
2703 char *cmd;
2704 int beep_cmd;
2705
2706 if (!beep_handle)
2707 return -ENODEV;
2708
2709 while ((cmd = next_cmd(&buf))) {
2710 if (sscanf(cmd, "%u", &beep_cmd) == 1 &&
2711 beep_cmd >= 0 && beep_cmd <= 17) {
2712 /* beep_cmd set */
2713 } else
2714 return -EINVAL;
2715 if (!acpi_evalf(beep_handle, NULL, NULL, "vdd", beep_cmd, 0))
2716 return -EIO;
2717 }
2718
2719 return 0;
2720}
2721
a5763f22
HMH		 2722static struct ibm_struct beep_driver_data = {
2723 .name = "beep",
2724 .read = beep_read,
2725 .write = beep_write,
2726};
2727
56b6aeb0
HMH		 2728/*************************************************************************
2729 * Thermal subdriver
2730 */
78f81cc4 2731
a26f878a 2732static enum thermal_access_mode thermal_read_mode;
78f81cc4 2733
2c37aa4e
HMH		 2734/* sysfs temp##_input -------------------------------------------------- */
2735
2736static ssize_t thermal_temp_input_show(struct device *dev,
2737 struct device_attribute *attr,
2738 char *buf)
2739{
2740 struct sensor_device_attribute *sensor_attr =
2741 to_sensor_dev_attr(attr);
2742 int idx = sensor_attr->index;
2743 s32 value;
2744 int res;
2745
2746 res = thermal_get_sensor(idx, &value);
2747 if (res)
2748 return res;
2749 if (value == TP_EC_THERMAL_TMP_NA * 1000)
2750 return -ENXIO;
2751
2752 return snprintf(buf, PAGE_SIZE, "%d\n", value);
2753}
2754
2755#define THERMAL_SENSOR_ATTR_TEMP(_idxA, _idxB) \
2756 SENSOR_ATTR(temp##_idxA##_input, S_IRUGO, thermal_temp_input_show, NULL, _idxB)
2757
2758static struct sensor_device_attribute sensor_dev_attr_thermal_temp_input[] = {
2759 THERMAL_SENSOR_ATTR_TEMP(1, 0),
2760 THERMAL_SENSOR_ATTR_TEMP(2, 1),
2761 THERMAL_SENSOR_ATTR_TEMP(3, 2),
2762 THERMAL_SENSOR_ATTR_TEMP(4, 3),
2763 THERMAL_SENSOR_ATTR_TEMP(5, 4),
2764 THERMAL_SENSOR_ATTR_TEMP(6, 5),
2765 THERMAL_SENSOR_ATTR_TEMP(7, 6),
2766 THERMAL_SENSOR_ATTR_TEMP(8, 7),
2767 THERMAL_SENSOR_ATTR_TEMP(9, 8),
2768 THERMAL_SENSOR_ATTR_TEMP(10, 9),
2769 THERMAL_SENSOR_ATTR_TEMP(11, 10),
2770 THERMAL_SENSOR_ATTR_TEMP(12, 11),
2771 THERMAL_SENSOR_ATTR_TEMP(13, 12),
2772 THERMAL_SENSOR_ATTR_TEMP(14, 13),
2773 THERMAL_SENSOR_ATTR_TEMP(15, 14),
2774 THERMAL_SENSOR_ATTR_TEMP(16, 15),
2775};
2776
2777#define THERMAL_ATTRS(X) \
2778 &sensor_dev_attr_thermal_temp_input[X].dev_attr.attr
2779
2780static struct attribute *thermal_temp_input_attr[] = {
2781 THERMAL_ATTRS(8),
2782 THERMAL_ATTRS(9),
2783 THERMAL_ATTRS(10),
2784 THERMAL_ATTRS(11),
2785 THERMAL_ATTRS(12),
2786 THERMAL_ATTRS(13),
2787 THERMAL_ATTRS(14),
2788 THERMAL_ATTRS(15),
2789 THERMAL_ATTRS(0),
2790 THERMAL_ATTRS(1),
2791 THERMAL_ATTRS(2),
2792 THERMAL_ATTRS(3),
2793 THERMAL_ATTRS(4),
2794 THERMAL_ATTRS(5),
2795 THERMAL_ATTRS(6),
2796 THERMAL_ATTRS(7),
2797 NULL
2798};
2799
2800static const struct attribute_group thermal_temp_input16_group = {
2801 .attrs = thermal_temp_input_attr
2802};
2803
2804static const struct attribute_group thermal_temp_input8_group = {
2805 .attrs = &thermal_temp_input_attr[8]
2806};
2807
2808#undef THERMAL_SENSOR_ATTR_TEMP
2809#undef THERMAL_ATTRS
2810
2811/* --------------------------------------------------------------------- */
2812
a5763f22 2813static int __init thermal_init(struct ibm_init_struct *iibm)
78f81cc4 2814{
60eb0b35
HMH		 2815 u8 t, ta1, ta2;
2816 int i;
5fba344c 2817 int acpi_tmp7;
2c37aa4e 2818 int res;
5fba344c 2819
fe08bc4b
HMH		 2820 vdbg_printk(TPACPI_DBG_INIT, "initializing thermal subdriver\n");
2821
5fba344c 2822 acpi_tmp7 = acpi_evalf(ec_handle, NULL, "TMP7", "qv");
60eb0b35 2823
3d6f99ca 2824 if (thinkpad_id.ec_model) {
60eb0b35
HMH		 2825 /*
2826 * Direct EC access mode: sensors at registers
2827 * 0x78-0x7F, 0xC0-0xC7. Registers return 0x00 for
2828 * non-implemented, thermal sensors return 0x80 when
2829 * not available
2830 */
78f81cc4 2831
60eb0b35
HMH		 2832 ta1 = ta2 = 0;
2833 for (i = 0; i < 8; i++) {
04cc862c 2834 if (acpi_ec_read(TP_EC_THERMAL_TMP0 + i, &t)) {
60eb0b35
HMH		 2835 ta1 |= t;
2836 } else {
2837 ta1 = 0;
2838 break;
2839 }
04cc862c 2840 if (acpi_ec_read(TP_EC_THERMAL_TMP8 + i, &t)) {
60eb0b35
HMH		 2841 ta2 |= t;
2842 } else {
2843 ta1 = 0;
2844 break;
2845 }
2846 }
2847 if (ta1 == 0) {
2848 /* This is sheer paranoia, but we handle it anyway */
2849 if (acpi_tmp7) {
2850 printk(IBM_ERR
2851 "ThinkPad ACPI EC access misbehaving, "
2852 "falling back to ACPI TMPx access mode\n");
efa27145 2853 thermal_read_mode = TPACPI_THERMAL_ACPI_TMP07;
60eb0b35
HMH		 2854 } else {
2855 printk(IBM_ERR
2856 "ThinkPad ACPI EC access misbehaving, "
2857 "disabling thermal sensors access\n");
efa27145 2858 thermal_read_mode = TPACPI_THERMAL_NONE;
60eb0b35
HMH		 2859 }
2860 } else {
2861 thermal_read_mode =
2862 (ta2 != 0) ?
efa27145 2863 TPACPI_THERMAL_TPEC_16 : TPACPI_THERMAL_TPEC_8;
60eb0b35
HMH		 2864 }
2865 } else if (acpi_tmp7) {
a26f878a
HMH		 2866 if (acpi_evalf(ec_handle, NULL, "UPDT", "qv")) {
2867 /* 600e/x, 770e, 770x */
efa27145 2868 thermal_read_mode = TPACPI_THERMAL_ACPI_UPDT;
a26f878a
HMH		 2869 } else {
2870 /* Standard ACPI TMPx access, max 8 sensors */
efa27145 2871 thermal_read_mode = TPACPI_THERMAL_ACPI_TMP07;
a26f878a
HMH		 2872 }
2873 } else {
2874 /* temperatures not supported on 570, G4x, R30, R31, R32 */
efa27145 2875 thermal_read_mode = TPACPI_THERMAL_NONE;
a26f878a 2876 }
78f81cc4 2877
fe08bc4b
HMH		 2878 vdbg_printk(TPACPI_DBG_INIT, "thermal is %s, mode %d\n",
2879 str_supported(thermal_read_mode != TPACPI_THERMAL_NONE),
2880 thermal_read_mode);
2881
2c37aa4e
HMH		 2882 switch(thermal_read_mode) {
2883 case TPACPI_THERMAL_TPEC_16:
7fd40029 2884 res = sysfs_create_group(&tpacpi_sensors_pdev->dev.kobj,
2c37aa4e
HMH		 2885 &thermal_temp_input16_group);
2886 if (res)
2887 return res;
2888 break;
2889 case TPACPI_THERMAL_TPEC_8:
2890 case TPACPI_THERMAL_ACPI_TMP07:
2891 case TPACPI_THERMAL_ACPI_UPDT:
7fd40029 2892 res = sysfs_create_group(&tpacpi_sensors_pdev->dev.kobj,
2c37aa4e
HMH		 2893 &thermal_temp_input8_group);
2894 if (res)
2895 return res;
2896 break;
2897 case TPACPI_THERMAL_NONE:
2898 default:
2899 return 1;
2900 }
2901
2902 return 0;
2903}
2904
2905static void thermal_exit(void)
2906{
2907 switch(thermal_read_mode) {
2908 case TPACPI_THERMAL_TPEC_16:
7fd40029 2909 sysfs_remove_group(&tpacpi_sensors_pdev->dev.kobj,
2c37aa4e
HMH		 2910 &thermal_temp_input16_group);
2911 break;
2912 case TPACPI_THERMAL_TPEC_8:
2913 case TPACPI_THERMAL_ACPI_TMP07:
2914 case TPACPI_THERMAL_ACPI_UPDT:
7fd40029 2915 sysfs_remove_group(&tpacpi_sensors_pdev->dev.kobj,
2c37aa4e
HMH		 2916 &thermal_temp_input16_group);
2917 break;
2918 case TPACPI_THERMAL_NONE:
2919 default:
2920 break;
2921 }
78f81cc4
BD		 2922}
2923
04cc862c
HMH		 2924/* idx is zero-based */
2925static int thermal_get_sensor(int idx, s32 *value)
78f81cc4 2926{
04cc862c 2927 int t;
60eb0b35 2928 s8 tmp;
04cc862c 2929 char tmpi[5];
78f81cc4 2930
04cc862c 2931 t = TP_EC_THERMAL_TMP0;
78f81cc4 2932
a26f878a 2933 switch (thermal_read_mode) {
efa27145
HMH		 2934#if TPACPI_MAX_THERMAL_SENSORS >= 16
2935 case TPACPI_THERMAL_TPEC_16:
04cc862c
HMH		 2936 if (idx >= 8 && idx <= 15) {
2937 t = TP_EC_THERMAL_TMP8;
2938 idx -= 8;
60eb0b35
HMH		 2939 }
2940 /* fallthrough */
2941#endif
efa27145 2942 case TPACPI_THERMAL_TPEC_8:
04cc862c
HMH		 2943 if (idx <= 7) {
2944 if (!acpi_ec_read(t + idx, &tmp))
78f81cc4 2945 return -EIO;
04cc862c
HMH		 2946 *value = tmp * 1000;
2947 return 0;
60eb0b35 2948 }
04cc862c 2949 break;
78f81cc4 2950
efa27145 2951 case TPACPI_THERMAL_ACPI_UPDT:
04cc862c
HMH		 2952 if (idx <= 7) {
2953 snprintf(tmpi, sizeof(tmpi), "TMP%c", '0' + idx);
2954 if (!acpi_evalf(ec_handle, NULL, "UPDT", "v"))
2955 return -EIO;
78f81cc4
BD		 2956 if (!acpi_evalf(ec_handle, &t, tmpi, "d"))
2957 return -EIO;
04cc862c
HMH		 2958 *value = (t - 2732) * 100;
2959 return 0;
78f81cc4 2960 }
04cc862c 2961 break;
78f81cc4 2962
efa27145 2963 case TPACPI_THERMAL_ACPI_TMP07:
04cc862c
HMH		 2964 if (idx <= 7) {
2965 snprintf(tmpi, sizeof(tmpi), "TMP%c", '0' + idx);
78f81cc4
BD		 2966 if (!acpi_evalf(ec_handle, &t, tmpi, "d"))
2967 return -EIO;
a8fba3da
HMH		 2968 if (t > 127 || t < -127)
2969 t = TP_EC_THERMAL_TMP_NA;
04cc862c
HMH		 2970 *value = t * 1000;
2971 return 0;
78f81cc4 2972 }
04cc862c 2973 break;
78f81cc4 2974
efa27145 2975 case TPACPI_THERMAL_NONE:
a26f878a 2976 default:
04cc862c
HMH		 2977 return -ENOSYS;
2978 }
2979
2980 return -EINVAL;
2981}
2982
2983static int thermal_get_sensors(struct ibm_thermal_sensors_struct *s)
2984{
2985 int res, i;
2986 int n;
2987
2988 n = 8;
2989 i = 0;
2990
2991 if (!s)
2992 return -EINVAL;
2993
2994 if (thermal_read_mode == TPACPI_THERMAL_TPEC_16)
2995 n = 16;
2996
2997 for(i = 0 ; i < n; i++) {
2998 res = thermal_get_sensor(i, &s->temp[i]);
2999 if (res)
3000 return res;
78f81cc4 3001 }
04cc862c
HMH		 3002
3003 return n;
a26f878a
HMH		 3004}
3005
3006static int thermal_read(char *p)
3007{
3008 int len = 0;
3009 int n, i;
3010 struct ibm_thermal_sensors_struct t;
3011
3012 n = thermal_get_sensors(&t);
3013 if (unlikely(n < 0))
3014 return n;
3015
3016 len += sprintf(p + len, "temperatures:\t");
3017
3018 if (n > 0) {
3019 for (i = 0; i < (n - 1); i++)
3020 len += sprintf(p + len, "%d ", t.temp[i] / 1000);
3021 len += sprintf(p + len, "%d\n", t.temp[i] / 1000);
3022 } else
3023 len += sprintf(p + len, "not supported\n");
78f81cc4
BD		 3024
3025 return len;
3026}
3027
a5763f22
HMH		 3028static struct ibm_struct thermal_driver_data = {
3029 .name = "thermal",
3030 .read = thermal_read,
2c37aa4e 3031 .exit = thermal_exit,
a5763f22
HMH		 3032};
3033
56b6aeb0
HMH		 3034/*************************************************************************
3035 * EC Dump subdriver
3036 */
3037
78f81cc4
BD		 3038static u8 ecdump_regs[256];
3039
3040static int ecdump_read(char *p)
3041{
3042 int len = 0;
3043 int i, j;
3044 u8 v;
3045
3046 len += sprintf(p + len, "EC "
3047 " +00 +01 +02 +03 +04 +05 +06 +07"
3048 " +08 +09 +0a +0b +0c +0d +0e +0f\n");
3049 for (i = 0; i < 256; i += 16) {
3050 len += sprintf(p + len, "EC 0x%02x:", i);
3051 for (j = 0; j < 16; j++) {
3052 if (!acpi_ec_read(i + j, &v))
3053 break;
3054 if (v != ecdump_regs[i + j])
3055 len += sprintf(p + len, " *%02x", v);
3056 else
3057 len += sprintf(p + len, " %02x", v);
3058 ecdump_regs[i + j] = v;
3059 }
3060 len += sprintf(p + len, "\n");
3061 if (j != 16)
3062 break;
3063 }
3064
3065 /* These are way too dangerous to advertise openly... */
3066#if 0
3067 len += sprintf(p + len, "commands:\t0x<offset> 0x<value>"
3068 " (<offset> is 00-ff, <value> is 00-ff)\n");
3069 len += sprintf(p + len, "commands:\t0x<offset> <value> "
3070 " (<offset> is 00-ff, <value> is 0-255)\n");
3071#endif
3072 return len;
3073}
3074
3075static int ecdump_write(char *buf)
3076{
3077 char *cmd;
3078 int i, v;
3079
3080 while ((cmd = next_cmd(&buf))) {
3081 if (sscanf(cmd, "0x%x 0x%x", &i, &v) == 2) {
3082 /* i and v set */
3083 } else if (sscanf(cmd, "0x%x %u", &i, &v) == 2) {
3084 /* i and v set */
3085 } else
3086 return -EINVAL;
3087 if (i >= 0 && i < 256 && v >= 0 && v < 256) {
3088 if (!acpi_ec_write(i, v))
1da177e4
LT		 3089 return -EIO;
3090 } else
3091 return -EINVAL;
3092 }
3093
3094 return 0;
78f81cc4
BD		 3095}
3096
a5763f22
HMH		 3097static struct ibm_struct ecdump_driver_data = {
3098 .name = "ecdump",
3099 .read = ecdump_read,
3100 .write = ecdump_write,
92641177 3101 .flags.experimental = 1,
a5763f22
HMH		 3102};
3103
56b6aeb0
HMH		 3104/*************************************************************************
3105 * Backlight/brightness subdriver
3106 */
3107
94954cc6 3108static struct backlight_device *ibm_backlight_device;
56b6aeb0
HMH		 3109
3110static struct backlight_ops ibm_backlight_data = {
3111 .get_brightness = brightness_get,
3112 .update_status = brightness_update_status,
3113};
3114
f432255e
HMH		 3115static struct mutex brightness_mutex;
3116
a3f104c0
HMH		 3117static int __init tpacpi_query_bcll_levels(acpi_handle handle)
3118{
3119 struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
3120 union acpi_object *obj;
3121 int rc;
3122
3123 if (ACPI_SUCCESS(acpi_evaluate_object(handle, NULL, NULL, &buffer))) {
3124 obj = (union acpi_object *)buffer.pointer;
3125 if (!obj || (obj->type != ACPI_TYPE_PACKAGE)) {
3126 printk(IBM_ERR "Unknown BCLL data, "
3127 "please report this to %s\n", IBM_MAIL);
3128 rc = 0;
3129 } else {
3130 rc = obj->package.count;
3131 }
3132 } else {
3133 return 0;
3134 }
3135
3136 kfree(buffer.pointer);
3137 return rc;
3138}
3139
3140static acpi_status __init brightness_find_bcll(acpi_handle handle, u32 lvl,
3141 void *context, void **rv)
3142{
3143 char name[ACPI_PATH_SEGMENT_LENGTH];
3144 struct acpi_buffer buffer = { sizeof(name), &name };
3145
3146 if (ACPI_SUCCESS(acpi_get_name(handle, ACPI_SINGLE_NAME, &buffer)) &&
3147 !strncmp("BCLL", name, sizeof(name) - 1)) {
3148 if (tpacpi_query_bcll_levels(handle) == 16) {
3149 *rv = handle;
3150 return AE_CTRL_TERMINATE;
3151 } else {
3152 return AE_OK;
3153 }
3154 } else {
3155 return AE_OK;
3156 }
3157}
3158
3159static int __init brightness_check_levels(void)
3160{
3161 int status;
3162 void *found_node = NULL;
3163
3164 if (!vid_handle) {
3165 IBM_ACPIHANDLE_INIT(vid);
3166 }
3167 if (!vid_handle)
3168 return 0;
3169
3170 /* Search for a BCLL package with 16 levels */
3171 status = acpi_walk_namespace(ACPI_TYPE_PACKAGE, vid_handle, 3,
3172 brightness_find_bcll, NULL, &found_node);
3173
3174 return (ACPI_SUCCESS(status) && found_node != NULL);
3175}
3176
a5763f22 3177static int __init brightness_init(struct ibm_init_struct *iibm)
56b6aeb0
HMH		 3178{
3179 int b;
3180
fe08bc4b
HMH		 3181 vdbg_printk(TPACPI_DBG_INIT, "initializing brightness subdriver\n");
3182
f432255e
HMH		 3183 mutex_init(&brightness_mutex);
3184
24d3b774
HMH		 3185 if (!brightness_mode) {
3186 if (thinkpad_id.vendor == PCI_VENDOR_ID_LENOVO)
3187 brightness_mode = 2;
3188 else
3189 brightness_mode = 3;
3190
3191 dbg_printk(TPACPI_DBG_INIT, "selected brightness_mode=%d\n",
3192 brightness_mode);
3193 }
3194
3195 if (brightness_mode > 3)
3196 return -EINVAL;
3197
a3f104c0
HMH		 3198 tp_features.bright_16levels =
3199 thinkpad_id.vendor == PCI_VENDOR_ID_LENOVO &&
3200 brightness_check_levels();
3201
56b6aeb0
HMH		 3202 b = brightness_get(NULL);
3203 if (b < 0)
24d3b774 3204 return 1;
56b6aeb0 3205
a3f104c0
HMH		 3206 if (tp_features.bright_16levels)
3207 printk(IBM_INFO "detected a 16-level brightness capable ThinkPad\n");
3208
7d5a015e
HMH		 3209 ibm_backlight_device = backlight_device_register(
3210 TPACPI_BACKLIGHT_DEV_NAME, NULL, NULL,
3211 &ibm_backlight_data);
56b6aeb0
HMH		 3212 if (IS_ERR(ibm_backlight_device)) {
3213 printk(IBM_ERR "Could not register backlight device\n");
3214 return PTR_ERR(ibm_backlight_device);
3215 }
fe08bc4b 3216 vdbg_printk(TPACPI_DBG_INIT, "brightness is supported\n");
56b6aeb0 3217
a3f104c0
HMH		 3218 ibm_backlight_device->props.max_brightness =
3219 (tp_features.bright_16levels)? 15 : 7;
56b6aeb0
HMH		 3220 ibm_backlight_device->props.brightness = b;
3221 backlight_update_status(ibm_backlight_device);
3222
3223 return 0;
3224}
3225
3226static void brightness_exit(void)
3227{
3228 if (ibm_backlight_device) {
fe08bc4b
HMH		 3229 vdbg_printk(TPACPI_DBG_EXIT,
3230 "calling backlight_device_unregister()\n");
56b6aeb0
HMH		 3231 backlight_device_unregister(ibm_backlight_device);
3232 ibm_backlight_device = NULL;
3233 }
3234}
3235
3236static int brightness_update_status(struct backlight_device *bd)
3237{
3238 return brightness_set(
3239 (bd->props.fb_blank == FB_BLANK_UNBLANK &&
3240 bd->props.power == FB_BLANK_UNBLANK) ?
3241 bd->props.brightness : 0);
3242}
3243
24d3b774
HMH		 3244/*
3245 * ThinkPads can read brightness from two places: EC 0x31, or
3246 * CMOS NVRAM byte 0x5E, bits 0-3.
3247 */
8acb0250
HM		 3248static int brightness_get(struct backlight_device *bd)
3249{
24d3b774 3250 u8 lec = 0, lcmos = 0, level = 0;
8acb0250 3251
24d3b774
HMH		 3252 if (brightness_mode & 1) {
3253 if (!acpi_ec_read(brightness_offset, &lec))
3254 return -EIO;
a3f104c0 3255 lec &= (tp_features.bright_16levels)? 0x0f : 0x07;
24d3b774
HMH		 3256 level = lec;
3257 };
3258 if (brightness_mode & 2) {
3259 lcmos = (nvram_read_byte(TP_NVRAM_ADDR_BRIGHTNESS)
3260 & TP_NVRAM_MASK_LEVEL_BRIGHTNESS)
3261 >> TP_NVRAM_POS_LEVEL_BRIGHTNESS;
a3f104c0 3262 lcmos &= (tp_features.bright_16levels)? 0x0f : 0x07;
24d3b774
HMH		 3263 level = lcmos;
3264 }
3265
3266 if (brightness_mode == 3 && lec != lcmos) {
3267 printk(IBM_ERR
3268 "CMOS NVRAM (%u) and EC (%u) do not agree "
3269 "on display brightness level\n",
3270 (unsigned int) lcmos,
3271 (unsigned int) lec);
3272 return -EIO;
3273 }
fb87a811 3274
8d297264 3275 return level;
8acb0250
HM		 3276}
3277
8acb0250 3278static int brightness_set(int value)
1da177e4 3279{
f432255e
HMH		 3280 int cmos_cmd, inc, i, res;
3281 int current_value;
8acb0250 3282
a3f104c0 3283 if (value > ((tp_features.bright_16levels)? 15 : 7))
24d3b774 3284 return -EINVAL;
8acb0250 3285
f432255e
HMH		 3286 res = mutex_lock_interruptible(&brightness_mutex);
3287 if (res < 0)
3288 return res;
3289
3290 current_value = brightness_get(NULL);
3291 if (current_value < 0) {
3292 res = current_value;
3293 goto errout;
3294 }
3295
24d3b774
HMH		 3296 cmos_cmd = value > current_value ?
3297 TP_CMOS_BRIGHTNESS_UP :
3298 TP_CMOS_BRIGHTNESS_DOWN;
a3f104c0 3299 inc = (value > current_value)? 1 : -1;
24d3b774 3300
f432255e 3301 res = 0;
8acb0250 3302 for (i = current_value; i != value; i += inc) {
24d3b774 3303 if ((brightness_mode & 2) &&
f432255e
HMH		 3304 issue_thinkpad_cmos_command(cmos_cmd)) {
3305 res = -EIO;
3306 goto errout;
3307 }
24d3b774 3308 if ((brightness_mode & 1) &&
f432255e
HMH		 3309 !acpi_ec_write(brightness_offset, i + inc)) {
3310 res = -EIO;
3311 goto errout;;
3312 }
8acb0250
HM		 3313 }
3314
f432255e
HMH		 3315errout:
3316 mutex_unlock(&brightness_mutex);
3317 return res;
8acb0250
HM		 3318}
3319
56b6aeb0
HMH		 3320static int brightness_read(char *p)
3321{
3322 int len = 0;
3323 int level;
3324
3325 if ((level = brightness_get(NULL)) < 0) {
3326 len += sprintf(p + len, "level:\t\tunreadable\n");
3327 } else {
a3f104c0 3328 len += sprintf(p + len, "level:\t\t%d\n", level);
56b6aeb0
HMH		 3329 len += sprintf(p + len, "commands:\tup, down\n");
3330 len += sprintf(p + len, "commands:\tlevel <level>"
a3f104c0
HMH		 3331 " (<level> is 0-%d)\n",
3332 (tp_features.bright_16levels) ? 15 : 7);
56b6aeb0
HMH		 3333 }
3334
3335 return len;
3336}
3337
8acb0250
HM		 3338static int brightness_write(char *buf)
3339{
3340 int level;
78f81cc4 3341 int new_level;
1da177e4 3342 char *cmd;
a3f104c0 3343 int max_level = (tp_features.bright_16levels) ? 15 : 7;
1da177e4
LT		 3344
3345 while ((cmd = next_cmd(&buf))) {
8acb0250
HM		 3346 if ((level = brightness_get(NULL)) < 0)
3347 return level;
78f81cc4
BD		 3348
3349 if (strlencmp(cmd, "up") == 0) {
a3f104c0
HMH		 3350 new_level = level == (max_level)?
3351 max_level : level + 1;
78f81cc4 3352 } else if (strlencmp(cmd, "down") == 0) {
a3f104c0 3353 new_level = level == 0? 0 : level - 1;
78f81cc4 3354 } else if (sscanf(cmd, "level %d", &new_level) == 1 &&
a3f104c0 3355 new_level >= 0 && new_level <= max_level) {
78f81cc4
BD		 3356 /* new_level set */
3357 } else
3358 return -EINVAL;
3359
8acb0250 3360 brightness_set(new_level);
78f81cc4
BD		 3361 }
3362
3363 return 0;
3364}
3365
a5763f22
HMH		 3366static struct ibm_struct brightness_driver_data = {
3367 .name = "brightness",
3368 .read = brightness_read,
3369 .write = brightness_write,
3370 .exit = brightness_exit,
3371};
3372
56b6aeb0
HMH		 3373/*************************************************************************
3374 * Volume subdriver
3375 */
fb87a811 3376
78f81cc4
BD		 3377static int volume_read(char *p)
3378{
3379 int len = 0;
3380 u8 level;
3381
3382 if (!acpi_ec_read(volume_offset, &level)) {
3383 len += sprintf(p + len, "level:\t\tunreadable\n");
3384 } else {
3385 len += sprintf(p + len, "level:\t\t%d\n", level & 0xf);
3386 len += sprintf(p + len, "mute:\t\t%s\n", onoff(level, 6));
3387 len += sprintf(p + len, "commands:\tup, down, mute\n");
3388 len += sprintf(p + len, "commands:\tlevel <level>"
3389 " (<level> is 0-15)\n");
3390 }
3391
3392 return len;
3393}
3394
78f81cc4
BD		 3395static int volume_write(char *buf)
3396{
3397 int cmos_cmd, inc, i;
3398 u8 level, mute;
3399 int new_level, new_mute;
3400 char *cmd;
3401
3402 while ((cmd = next_cmd(&buf))) {
3403 if (!acpi_ec_read(volume_offset, &level))
3404 return -EIO;
3405 new_mute = mute = level & 0x40;
3406 new_level = level = level & 0xf;
3407
3408 if (strlencmp(cmd, "up") == 0) {
3409 if (mute)
3410 new_mute = 0;
3411 else
3412 new_level = level == 15 ? 15 : level + 1;
3413 } else if (strlencmp(cmd, "down") == 0) {
3414 if (mute)
3415 new_mute = 0;
3416 else
3417 new_level = level == 0 ? 0 : level - 1;
3418 } else if (sscanf(cmd, "level %d", &new_level) == 1 &&
3419 new_level >= 0 && new_level <= 15) {
3420 /* new_level set */
3421 } else if (strlencmp(cmd, "mute") == 0) {
3422 new_mute = 0x40;
1da177e4
LT		 3423 } else
3424 return -EINVAL;
3425
78f81cc4 3426 if (new_level != level) { /* mute doesn't change */
56b6aeb0 3427 cmos_cmd = new_level > level ? TP_CMOS_VOLUME_UP : TP_CMOS_VOLUME_DOWN;
78f81cc4
BD		 3428 inc = new_level > level ? 1 : -1;
3429
c9bea99c 3430 if (mute && (issue_thinkpad_cmos_command(cmos_cmd) ||
78f81cc4
BD		 3431 !acpi_ec_write(volume_offset, level)))
3432 return -EIO;
3433
3434 for (i = level; i != new_level; i += inc)
c9bea99c 3435 if (issue_thinkpad_cmos_command(cmos_cmd) ||
78f81cc4
BD		 3436 !acpi_ec_write(volume_offset, i + inc))
3437 return -EIO;
3438
c9bea99c 3439 if (mute && (issue_thinkpad_cmos_command(TP_CMOS_VOLUME_MUTE) ||
78f81cc4
BD		 3440 !acpi_ec_write(volume_offset,
3441 new_level + mute)))
3442 return -EIO;
3443 }
3444
3445 if (new_mute != mute) { /* level doesn't change */
56b6aeb0 3446 cmos_cmd = new_mute ? TP_CMOS_VOLUME_MUTE : TP_CMOS_VOLUME_UP;
78f81cc4 3447
c9bea99c 3448 if (issue_thinkpad_cmos_command(cmos_cmd) ||
78f81cc4
BD		 3449 !acpi_ec_write(volume_offset, level + new_mute))
3450 return -EIO;
3451 }
3452 }
3453
3454 return 0;
3455}
3456
a5763f22
HMH		 3457static struct ibm_struct volume_driver_data = {
3458 .name = "volume",
3459 .read = volume_read,
3460 .write = volume_write,
3461};
56b6aeb0
HMH		 3462
3463/*************************************************************************
3464 * Fan subdriver
3465 */
3466
3467/*
3468 * FAN ACCESS MODES
3469 *
efa27145 3470 * TPACPI_FAN_RD_ACPI_GFAN:
56b6aeb0
HMH		 3471 * ACPI GFAN method: returns fan level
3472 *
efa27145 3473 * see TPACPI_FAN_WR_ACPI_SFAN
f51d1a39 3474 * EC 0x2f (HFSP) not available if GFAN exists
56b6aeb0 3475 *
efa27145 3476 * TPACPI_FAN_WR_ACPI_SFAN:
56b6aeb0
HMH		 3477 * ACPI SFAN method: sets fan level, 0 (stop) to 7 (max)
3478 *
f51d1a39
HMH		 3479 * EC 0x2f (HFSP) might be available *for reading*, but do not use
3480 * it for writing.
56b6aeb0 3481 *
efa27145 3482 * TPACPI_FAN_WR_TPEC:
f51d1a39
HMH		 3483 * ThinkPad EC register 0x2f (HFSP): fan control loop mode
3484 * Supported on almost all ThinkPads
56b6aeb0
HMH		 3485 *
3486 * Fan speed changes of any sort (including those caused by the
3487 * disengaged mode) are usually done slowly by the firmware as the
3488 * maximum ammount of fan duty cycle change per second seems to be
3489 * limited.
3490 *
3491 * Reading is not available if GFAN exists.
3492 * Writing is not available if SFAN exists.
3493 *
3494 * Bits
3495 * 7 automatic mode engaged;
3496 * (default operation mode of the ThinkPad)
3497 * fan level is ignored in this mode.
f51d1a39 3498 * 6 full speed mode (takes precedence over bit 7);
56b6aeb0 3499 * not available on all thinkpads. May disable
f51d1a39
HMH		 3500 * the tachometer while the fan controller ramps up
3501 * the speed (which can take up to a few *minutes*).
3502 * Speeds up fan to 100% duty-cycle, which is far above
3503 * the standard RPM levels. It is not impossible that
3504 * it could cause hardware damage.
56b6aeb0
HMH		 3505 * 5-3 unused in some models. Extra bits for fan level
3506 * in others, but still useless as all values above
3507 * 7 map to the same speed as level 7 in these models.
3508 * 2-0 fan level (0..7 usually)
3509 * 0x00 = stop
3510 * 0x07 = max (set when temperatures critical)
3511 * Some ThinkPads may have other levels, see
efa27145 3512 * TPACPI_FAN_WR_ACPI_FANS (X31/X40/X41)
56b6aeb0
HMH		 3513 *
3514 * FIRMWARE BUG: on some models, EC 0x2f might not be initialized at
3515 * boot. Apparently the EC does not intialize it, so unless ACPI DSDT
3516 * does so, its initial value is meaningless (0x07).
3517 *
3518 * For firmware bugs, refer to:
3519 * http://thinkwiki.org/wiki/Embedded_Controller_Firmware#Firmware_Issues
3520 *
3521 * ----
3522 *
3523 * ThinkPad EC register 0x84 (LSB), 0x85 (MSB):
3524 * Main fan tachometer reading (in RPM)
3525 *
3526 * This register is present on all ThinkPads with a new-style EC, and
3527 * it is known not to be present on the A21m/e, and T22, as there is
3528 * something else in offset 0x84 according to the ACPI DSDT. Other
3529 * ThinkPads from this same time period (and earlier) probably lack the
3530 * tachometer as well.
3531 *
3532 * Unfortunately a lot of ThinkPads with new-style ECs but whose firwmare
3533 * was never fixed by IBM to report the EC firmware version string
3534 * probably support the tachometer (like the early X models), so
3535 * detecting it is quite hard. We need more data to know for sure.
3536 *
3537 * FIRMWARE BUG: always read 0x84 first, otherwise incorrect readings
3538 * might result.
3539 *
f51d1a39
HMH		 3540 * FIRMWARE BUG: may go stale while the EC is switching to full speed
3541 * mode.
56b6aeb0
HMH		 3542 *
3543 * For firmware bugs, refer to:
3544 * http://thinkwiki.org/wiki/Embedded_Controller_Firmware#Firmware_Issues
3545 *
efa27145 3546 * TPACPI_FAN_WR_ACPI_FANS:
56b6aeb0
HMH		 3547 * ThinkPad X31, X40, X41. Not available in the X60.
3548 *
3549 * FANS ACPI handle: takes three arguments: low speed, medium speed,
3550 * high speed. ACPI DSDT seems to map these three speeds to levels
3551 * as follows: STOP LOW LOW MED MED HIGH HIGH HIGH HIGH
3552 * (this map is stored on FAN0..FAN8 as "0,1,1,2,2,3,3,3,3")
3553 *
3554 * The speeds are stored on handles
3555 * (FANA:FAN9), (FANC:FANB), (FANE:FAND).
3556 *
3557 * There are three default speed sets, acessible as handles:
3558 * FS1L,FS1M,FS1H; FS2L,FS2M,FS2H; FS3L,FS3M,FS3H
3559 *
3560 * ACPI DSDT switches which set is in use depending on various
3561 * factors.
3562 *
efa27145 3563 * TPACPI_FAN_WR_TPEC is also available and should be used to
56b6aeb0
HMH		 3564 * command the fan. The X31/X40/X41 seems to have 8 fan levels,
3565 * but the ACPI tables just mention level 7.
3566 */
3567
69ba91cb
HMH		 3568static enum fan_status_access_mode fan_status_access_mode;
3569static enum fan_control_access_mode fan_control_access_mode;
3570static enum fan_control_commands fan_control_commands;
78f81cc4 3571
778b4d74 3572static u8 fan_control_initial_status;
fe98a52c 3573static u8 fan_control_desired_level;
778b4d74 3574
25c68a33 3575static void fan_watchdog_fire(struct work_struct *ignored);
16663a87 3576static int fan_watchdog_maxinterval;
25c68a33 3577static DECLARE_DELAYED_WORK(fan_watchdog_task, fan_watchdog_fire);
16663a87 3578
56b6aeb0
HMH		 3579IBM_HANDLE(fans, ec, "FANS"); /* X31, X40, X41 */
3580IBM_HANDLE(gfan, ec, "GFAN", /* 570 */
3581 "\\FSPD", /* 600e/x, 770e, 770x */
3582 ); /* all others */
3583IBM_HANDLE(sfan, ec, "SFAN", /* 570 */
3584 "JFNS", /* 770x-JL */
3585 ); /* all others */
3586
fe98a52c
HMH		 3587/*
3588 * SYSFS fan layout: hwmon compatible (device)
3589 *
3590 * pwm*_enable:
3591 * 0: "disengaged" mode
3592 * 1: manual mode
3593 * 2: native EC "auto" mode (recommended, hardware default)
3594 *
3595 * pwm*: set speed in manual mode, ignored otherwise.
3596 * 0 is level 0; 255 is level 7. Intermediate points done with linear
3597 * interpolation.
3598 *
3599 * fan*_input: tachometer reading, RPM
3600 *
3601 *
3602 * SYSFS fan layout: extensions
3603 *
3604 * fan_watchdog (driver):
3605 * fan watchdog interval in seconds, 0 disables (default), max 120
3606 */
3607
3608/* sysfs fan pwm1_enable ----------------------------------------------- */
3609static ssize_t fan_pwm1_enable_show(struct device *dev,
3610 struct device_attribute *attr,
3611 char *buf)
3612{
3613 int res, mode;
3614 u8 status;
3615
3616 res = fan_get_status_safe(&status);
3617 if (res)
3618 return res;
3619
3620 if (unlikely(tp_features.fan_ctrl_status_undef)) {
3621 if (status != fan_control_initial_status) {
3622 tp_features.fan_ctrl_status_undef = 0;
3623 } else {
3624 /* Return most likely status. In fact, it
3625 * might be the only possible status */
3626 status = TP_EC_FAN_AUTO;
3627 }
3628 }
3629
3630 if (status & TP_EC_FAN_FULLSPEED) {
3631 mode = 0;
3632 } else if (status & TP_EC_FAN_AUTO) {
3633 mode = 2;
3634 } else
3635 mode = 1;
3636
3637 return snprintf(buf, PAGE_SIZE, "%d\n", mode);
3638}
3639
3640static ssize_t fan_pwm1_enable_store(struct device *dev,
3641 struct device_attribute *attr,
3642 const char *buf, size_t count)
3643{
3644 unsigned long t;
3645 int res, level;
3646
3647 if (parse_strtoul(buf, 2, &t))
3648 return -EINVAL;
3649
3650 switch (t) {
3651 case 0:
3652 level = TP_EC_FAN_FULLSPEED;
3653 break;
3654 case 1:
3655 level = TPACPI_FAN_LAST_LEVEL;
3656 break;
3657 case 2:
3658 level = TP_EC_FAN_AUTO;
3659 break;
3660 case 3:
3661 /* reserved for software-controlled auto mode */
3662 return -ENOSYS;
3663 default:
3664 return -EINVAL;
3665 }
3666
3667 res = fan_set_level_safe(level);
c573ddb9
HMH		 3668 if (res == -ENXIO)
3669 return -EINVAL;
3670 else if (res < 0)
fe98a52c
HMH		 3671 return res;
3672
3673 fan_watchdog_reset();
3674
3675 return count;
3676}
3677
3678static struct device_attribute dev_attr_fan_pwm1_enable =
3679 __ATTR(pwm1_enable, S_IWUSR | S_IRUGO,
3680 fan_pwm1_enable_show, fan_pwm1_enable_store);
3681
3682/* sysfs fan pwm1 ------------------------------------------------------ */
3683static ssize_t fan_pwm1_show(struct device *dev,
3684 struct device_attribute *attr,
3685 char *buf)
3686{
3687 int res;
3688 u8 status;
3689
3690 res = fan_get_status_safe(&status);
3691 if (res)
3692 return res;
3693
3694 if (unlikely(tp_features.fan_ctrl_status_undef)) {
3695 if (status != fan_control_initial_status) {
3696 tp_features.fan_ctrl_status_undef = 0;
3697 } else {
3698 status = TP_EC_FAN_AUTO;
3699 }
3700 }
3701
3702 if ((status &
3703 (TP_EC_FAN_AUTO | TP_EC_FAN_FULLSPEED)) != 0)
3704 status = fan_control_desired_level;
3705
3706 if (status > 7)
3707 status = 7;
3708
3709 return snprintf(buf, PAGE_SIZE, "%u\n", (status * 255) / 7);
3710}
3711
3712static ssize_t fan_pwm1_store(struct device *dev,
3713 struct device_attribute *attr,
3714 const char *buf, size_t count)
3715{
3716 unsigned long s;
3717 int rc;
3718 u8 status, newlevel;
3719
3720 if (parse_strtoul(buf, 255, &s))
3721 return -EINVAL;
3722
3723 /* scale down from 0-255 to 0-7 */
3724 newlevel = (s >> 5) & 0x07;
3725
3726 rc = mutex_lock_interruptible(&fan_mutex);
3727 if (rc < 0)
3728 return rc;
3729
3730 rc = fan_get_status(&status);
3731 if (!rc && (status &
3732 (TP_EC_FAN_AUTO | TP_EC_FAN_FULLSPEED)) == 0) {
3733 rc = fan_set_level(newlevel);
c573ddb9
HMH		 3734 if (rc == -ENXIO)
3735 rc = -EINVAL;
3736 else if (!rc) {
fe98a52c 3737 fan_update_desired_level(newlevel);
ca4ac2f4
HMH		 3738 fan_watchdog_reset();
3739 }
fe98a52c
HMH		 3740 }
3741
3742 mutex_unlock(&fan_mutex);
3743 return (rc)? rc : count;
3744}
3745
3746static struct device_attribute dev_attr_fan_pwm1 =
3747 __ATTR(pwm1, S_IWUSR | S_IRUGO,
3748 fan_pwm1_show, fan_pwm1_store);
3749
3750/* sysfs fan fan1_input ------------------------------------------------ */
3751static ssize_t fan_fan1_input_show(struct device *dev,
3752 struct device_attribute *attr,
3753 char *buf)
3754{
3755 int res;
3756 unsigned int speed;
3757
3758 res = fan_get_speed(&speed);
3759 if (res < 0)
3760 return res;
3761
3762 return snprintf(buf, PAGE_SIZE, "%u\n", speed);
3763}
3764
3765static struct device_attribute dev_attr_fan_fan1_input =
3766 __ATTR(fan1_input, S_IRUGO,
3767 fan_fan1_input_show, NULL);
3768
7fd40029 3769/* sysfs fan fan_watchdog (hwmon driver) ------------------------------- */
fe98a52c
HMH		 3770static ssize_t fan_fan_watchdog_show(struct device_driver *drv,
3771 char *buf)
3772{
3773 return snprintf(buf, PAGE_SIZE, "%u\n", fan_watchdog_maxinterval);
3774}
3775
3776static ssize_t fan_fan_watchdog_store(struct device_driver *drv,
3777 const char *buf, size_t count)
3778{
3779 unsigned long t;
3780
3781 if (parse_strtoul(buf, 120, &t))
3782 return -EINVAL;
3783
ecf2a80a
HMH		 3784 if (!fan_control_allowed)
3785 return -EPERM;
3786
fe98a52c
HMH		 3787 fan_watchdog_maxinterval = t;
3788 fan_watchdog_reset();
3789
3790 return count;
3791}
3792
3793static DRIVER_ATTR(fan_watchdog, S_IWUSR | S_IRUGO,
3794 fan_fan_watchdog_show, fan_fan_watchdog_store);
3795
3796/* --------------------------------------------------------------------- */
3797static struct attribute *fan_attributes[] = {
3798 &dev_attr_fan_pwm1_enable.attr, &dev_attr_fan_pwm1.attr,
3799 &dev_attr_fan_fan1_input.attr,
3800 NULL
3801};
3802
3803static const struct attribute_group fan_attr_group = {
3804 .attrs = fan_attributes,
3805};
3806
a5763f22 3807static int __init fan_init(struct ibm_init_struct *iibm)
78f81cc4 3808{
fe98a52c
HMH		 3809 int rc;
3810
fe08bc4b
HMH		 3811 vdbg_printk(TPACPI_DBG_INIT, "initializing fan subdriver\n");
3812
40ca9fdf 3813 mutex_init(&fan_mutex);
efa27145
HMH		 3814 fan_status_access_mode = TPACPI_FAN_NONE;
3815 fan_control_access_mode = TPACPI_FAN_WR_NONE;
69ba91cb 3816 fan_control_commands = 0;
16663a87 3817 fan_watchdog_maxinterval = 0;
d8fd94d9 3818 tp_features.fan_ctrl_status_undef = 0;
fe98a52c 3819 fan_control_desired_level = 7;
78f81cc4 3820
8d376cd6
HMH		 3821 IBM_ACPIHANDLE_INIT(fans);
3822 IBM_ACPIHANDLE_INIT(gfan);
3823 IBM_ACPIHANDLE_INIT(sfan);
5fba344c 3824
78f81cc4
BD		 3825 if (gfan_handle) {
3826 /* 570, 600e/x, 770e, 770x */
efa27145 3827 fan_status_access_mode = TPACPI_FAN_RD_ACPI_GFAN;
69ba91cb
HMH		 3828 } else {
3829 /* all other ThinkPads: note that even old-style
3830 * ThinkPad ECs supports the fan control register */
778b4d74
HMH		 3831 if (likely(acpi_ec_read(fan_status_offset,
3832 &fan_control_initial_status))) {
efa27145 3833 fan_status_access_mode = TPACPI_FAN_RD_TPEC;
778b4d74
HMH		 3834
3835 /* In some ThinkPads, neither the EC nor the ACPI
3836 * DSDT initialize the fan status, and it ends up
3837 * being set to 0x07 when it *could* be either
3838 * 0x07 or 0x80.
3839 *
3840 * Enable for TP-1Y (T43), TP-78 (R51e),
3841 * TP-76 (R52), TP-70 (T43, R52), which are known
3842 * to be buggy. */
d5a2f2f1
HMH		 3843 if (fan_control_initial_status == 0x07) {
3844 switch (thinkpad_id.ec_model) {
3845 case 0x5931: /* TP-1Y */
3846 case 0x3837: /* TP-78 */
3847 case 0x3637: /* TP-76 */
3848 case 0x3037: /* TP-70 */
3849 printk(IBM_NOTICE
3850 "fan_init: initial fan status is "
3851 "unknown, assuming it is in auto "
3852 "mode\n");
3853 tp_features.fan_ctrl_status_undef = 1;
3854 ;;
3855 }
778b4d74 3856 }
69ba91cb
HMH		 3857 } else {
3858 printk(IBM_ERR
3859 "ThinkPad ACPI EC access misbehaving, "
3860 "fan status and control unavailable\n");
5fba344c 3861 return 1;
69ba91cb
HMH		 3862 }
3863 }
78f81cc4 3864
69ba91cb
HMH		 3865 if (sfan_handle) {
3866 /* 570, 770x-JL */
efa27145 3867 fan_control_access_mode = TPACPI_FAN_WR_ACPI_SFAN;
1c6a334e 3868 fan_control_commands |=
efa27145 3869 TPACPI_FAN_CMD_LEVEL | TPACPI_FAN_CMD_ENABLE;
78f81cc4 3870 } else {
69ba91cb
HMH		 3871 if (!gfan_handle) {
3872 /* gfan without sfan means no fan control */
3873 /* all other models implement TP EC 0x2f control */
3874
3875 if (fans_handle) {
a8b7a662 3876 /* X31, X40, X41 */
69ba91cb 3877 fan_control_access_mode =
efa27145 3878 TPACPI_FAN_WR_ACPI_FANS;
69ba91cb 3879 fan_control_commands |=
efa27145
HMH		 3880 TPACPI_FAN_CMD_SPEED |
3881 TPACPI_FAN_CMD_LEVEL |
3882 TPACPI_FAN_CMD_ENABLE;
69ba91cb 3883 } else {
efa27145 3884 fan_control_access_mode = TPACPI_FAN_WR_TPEC;
a12095c2 3885 fan_control_commands |=
efa27145
HMH		 3886 TPACPI_FAN_CMD_LEVEL |
3887 TPACPI_FAN_CMD_ENABLE;
69ba91cb
HMH		 3888 }
3889 }
3890 }
3891
fe08bc4b
HMH		 3892 vdbg_printk(TPACPI_DBG_INIT, "fan is %s, modes %d, %d\n",
3893 str_supported(fan_status_access_mode != TPACPI_FAN_NONE ||
3894 fan_control_access_mode != TPACPI_FAN_WR_NONE),
3895 fan_status_access_mode, fan_control_access_mode);
3896
ecf2a80a
HMH		 3897 /* fan control master switch */
3898 if (!fan_control_allowed) {
3899 fan_control_access_mode = TPACPI_FAN_WR_NONE;
3900 fan_control_commands = 0;
3901 dbg_printk(TPACPI_DBG_INIT,
3902 "fan control features disabled by parameter\n");
3903 }
3904
fe98a52c
HMH		 3905 /* update fan_control_desired_level */
3906 if (fan_status_access_mode != TPACPI_FAN_NONE)
3907 fan_get_status_safe(NULL);
3908
3909 if (fan_status_access_mode != TPACPI_FAN_NONE ||
3910 fan_control_access_mode != TPACPI_FAN_WR_NONE) {
7fd40029 3911 rc = sysfs_create_group(&tpacpi_sensors_pdev->dev.kobj,
fe98a52c
HMH		 3912 &fan_attr_group);
3913 if (!(rc < 0))
7fd40029 3914 rc = driver_create_file(&tpacpi_hwmon_pdriver.driver,
fe98a52c
HMH		 3915 &driver_attr_fan_watchdog);
3916 if (rc < 0)
3917 return rc;
3918 return 0;
3919 } else
3920 return 1;
3921}
3922
3923/*
3924 * Call with fan_mutex held
3925 */
3926static void fan_update_desired_level(u8 status)
3927{
3928 if ((status &
3929 (TP_EC_FAN_AUTO | TP_EC_FAN_FULLSPEED)) == 0) {
3930 if (status > 7)
3931 fan_control_desired_level = 7;
3932 else
3933 fan_control_desired_level = status;
3934 }
69ba91cb 3935}
78f81cc4 3936
c52f0aa5 3937static int fan_get_status(u8 *status)
78f81cc4 3938{
c52f0aa5 3939 u8 s;
78f81cc4 3940
a8b7a662 3941 /* TODO:
efa27145 3942 * Add TPACPI_FAN_RD_ACPI_FANS ? */
a8b7a662 3943
3ef8a609 3944 switch (fan_status_access_mode) {
efa27145 3945 case TPACPI_FAN_RD_ACPI_GFAN:
78f81cc4 3946 /* 570, 600e/x, 770e, 770x */
c52f0aa5
HMH		 3947
3948 if (unlikely(!acpi_evalf(gfan_handle, &s, NULL, "d")))
1da177e4 3949 return -EIO;
78f81cc4 3950
c52f0aa5
HMH		 3951 if (likely(status))
3952 *status = s & 0x07;
3ef8a609
HMH		 3953
3954 break;
3955
efa27145 3956 case TPACPI_FAN_RD_TPEC:
78f81cc4 3957 /* all except 570, 600e/x, 770e, 770x */
c52f0aa5 3958 if (unlikely(!acpi_ec_read(fan_status_offset, &s)))
3ef8a609 3959 return -EIO;
78f81cc4 3960
c52f0aa5
HMH		 3961 if (likely(status))
3962 *status = s;
3963
3964 break;
3965
3966 default:
3967 return -ENXIO;
78f81cc4
BD		 3968 }
3969
c52f0aa5
HMH		 3970 return 0;
3971}
3972
fe98a52c
HMH		 3973static int fan_get_status_safe(u8 *status)
3974{
3975 int rc;
3976 u8 s;
3977
3978 rc = mutex_lock_interruptible(&fan_mutex);
3979 if (rc < 0)
3980 return rc;
3981 rc = fan_get_status(&s);
3982 if (!rc)
3983 fan_update_desired_level(s);
3984 mutex_unlock(&fan_mutex);
3985
3986 if (status)
3987 *status = s;
3988
3989 return rc;
3990}
3991
56b6aeb0
HMH		 3992static void fan_exit(void)
3993{
99fba3f8 3994 vdbg_printk(TPACPI_DBG_EXIT, "cancelling any pending fan watchdog tasks\n");
fe98a52c
HMH		 3995
3996 /* FIXME: can we really do this unconditionally? */
7fd40029
HMH		 3997 sysfs_remove_group(&tpacpi_sensors_pdev->dev.kobj, &fan_attr_group);
3998 driver_remove_file(&tpacpi_hwmon_pdriver.driver, &driver_attr_fan_watchdog);
fe98a52c 3999
56b6aeb0
HMH		 4000 cancel_delayed_work(&fan_watchdog_task);
4001 flush_scheduled_work();
4002}
4003
c52f0aa5
HMH		 4004static int fan_get_speed(unsigned int *speed)
4005{
4006 u8 hi, lo;
4007
4008 switch (fan_status_access_mode) {
efa27145 4009 case TPACPI_FAN_RD_TPEC:
78f81cc4 4010 /* all except 570, 600e/x, 770e, 770x */
3ef8a609
HMH		 4011 if (unlikely(!acpi_ec_read(fan_rpm_offset, &lo) ||
4012 !acpi_ec_read(fan_rpm_offset + 1, &hi)))
4013 return -EIO;
3ef8a609 4014
c52f0aa5
HMH		 4015 if (likely(speed))
4016 *speed = (hi << 8) | lo;
4017
4018 break;
4019
4020 default:
4021 return -ENXIO;
4022 }
4023
4024 return 0;
4025}
4026
56b6aeb0 4027static void fan_watchdog_fire(struct work_struct *ignored)
16663a87 4028{
99fba3f8
HMH		 4029 int rc;
4030
8fef502e
HMH		 4031 if (tpacpi_lifecycle != TPACPI_LIFE_RUNNING)
4032 return;
4033
56b6aeb0 4034 printk(IBM_NOTICE "fan watchdog: enabling fan\n");
99fba3f8
HMH		 4035 rc = fan_set_enable();
4036 if (rc < 0) {
4037 printk(IBM_ERR "fan watchdog: error %d while enabling fan, "
4038 "will try again later...\n", -rc);
56b6aeb0
HMH		 4039 /* reschedule for later */
4040 fan_watchdog_reset();
4041 }
16663a87
HMH		 4042}
4043
4044static void fan_watchdog_reset(void)
4045{
94954cc6 4046 static int fan_watchdog_active;
16663a87 4047
4985cd0a
HMH		 4048 if (fan_control_access_mode == TPACPI_FAN_WR_NONE)
4049 return;
4050
16663a87
HMH		 4051 if (fan_watchdog_active)
4052 cancel_delayed_work(&fan_watchdog_task);
4053
8fef502e
HMH		 4054 if (fan_watchdog_maxinterval > 0 &&
4055 tpacpi_lifecycle != TPACPI_LIFE_EXITING) {
16663a87
HMH		 4056 fan_watchdog_active = 1;
4057 if (!schedule_delayed_work(&fan_watchdog_task,
4058 msecs_to_jiffies(fan_watchdog_maxinterval
4059 * 1000))) {
4060 printk(IBM_ERR "failed to schedule the fan watchdog, "
4061 "watchdog will not trigger\n");
4062 }
4063 } else
4064 fan_watchdog_active = 0;
4065}
4066
18ad7996 4067static int fan_set_level(int level)
78f81cc4 4068{
ecf2a80a
HMH		 4069 if (!fan_control_allowed)
4070 return -EPERM;
4071
18ad7996 4072 switch (fan_control_access_mode) {
efa27145 4073 case TPACPI_FAN_WR_ACPI_SFAN:
18ad7996 4074 if (level >= 0 && level <= 7) {
fe98a52c 4075 if (!acpi_evalf(sfan_handle, NULL, NULL, "vd", level))
78f81cc4 4076 return -EIO;
18ad7996
HMH		 4077 } else
4078 return -EINVAL;
4079 break;
4080
efa27145
HMH		 4081 case TPACPI_FAN_WR_ACPI_FANS:
4082 case TPACPI_FAN_WR_TPEC:
4083 if ((level != TP_EC_FAN_AUTO) &&
4084 (level != TP_EC_FAN_FULLSPEED) &&
a12095c2
HMH		 4085 ((level < 0) || (level > 7)))
4086 return -EINVAL;
4087
eaa7571b
HMH		 4088 /* safety net should the EC not support AUTO
4089 * or FULLSPEED mode bits and just ignore them */
4090 if (level & TP_EC_FAN_FULLSPEED)
4091 level |= 7; /* safety min speed 7 */
4092 else if (level & TP_EC_FAN_FULLSPEED)
4093 level |= 4; /* safety min speed 4 */
4094
fe98a52c 4095 if (!acpi_ec_write(fan_status_offset, level))
a12095c2 4096 return -EIO;
778b4d74 4097 else
d8fd94d9 4098 tp_features.fan_ctrl_status_undef = 0;
a12095c2
HMH		 4099 break;
4100
18ad7996
HMH		 4101 default:
4102 return -ENXIO;
4103 }
4104 return 0;
4105}
4106
fe98a52c
HMH		 4107static int fan_set_level_safe(int level)
4108{
4109 int rc;
4110
ecf2a80a
HMH		 4111 if (!fan_control_allowed)
4112 return -EPERM;
4113
fe98a52c
HMH		 4114 rc = mutex_lock_interruptible(&fan_mutex);
4115 if (rc < 0)
4116 return rc;
4117
4118 if (level == TPACPI_FAN_LAST_LEVEL)
4119 level = fan_control_desired_level;
4120
4121 rc = fan_set_level(level);
4122 if (!rc)
4123 fan_update_desired_level(level);
4124
4125 mutex_unlock(&fan_mutex);
4126 return rc;
4127}
4128
18ad7996
HMH		 4129static int fan_set_enable(void)
4130{
1c6a334e
HMH		 4131 u8 s;
4132 int rc;
4133
ecf2a80a
HMH		 4134 if (!fan_control_allowed)
4135 return -EPERM;
4136
40ca9fdf
HMH		 4137 rc = mutex_lock_interruptible(&fan_mutex);
4138 if (rc < 0)
4139 return rc;
4140
18ad7996 4141 switch (fan_control_access_mode) {
efa27145
HMH		 4142 case TPACPI_FAN_WR_ACPI_FANS:
4143 case TPACPI_FAN_WR_TPEC:
40ca9fdf
HMH		 4144 rc = fan_get_status(&s);
4145 if (rc < 0)
4146 break;
1c6a334e
HMH		 4147
4148 /* Don't go out of emergency fan mode */
eaa7571b
HMH		 4149 if (s != 7) {
4150 s &= 0x07;
4151 s |= TP_EC_FAN_AUTO | 4; /* min fan speed 4 */
4152 }
1c6a334e
HMH		 4153
4154 if (!acpi_ec_write(fan_status_offset, s))
40ca9fdf
HMH		 4155 rc = -EIO;
4156 else {
d8fd94d9 4157 tp_features.fan_ctrl_status_undef = 0;
40ca9fdf
HMH		 4158 rc = 0;
4159 }
1c6a334e
HMH		 4160 break;
4161
efa27145 4162 case TPACPI_FAN_WR_ACPI_SFAN:
40ca9fdf
HMH		 4163 rc = fan_get_status(&s);
4164 if (rc < 0)
4165 break;
1c6a334e
HMH		 4166
4167 s &= 0x07;
4168
4169 /* Set fan to at least level 4 */
eaa7571b 4170 s |= 4;
1c6a334e
HMH		 4171
4172 if (!acpi_evalf(sfan_handle, NULL, NULL, "vd", s))
40ca9fdf
HMH		 4173 rc= -EIO;
4174 else
4175 rc = 0;
18ad7996
HMH		 4176 break;
4177
4178 default:
40ca9fdf 4179 rc = -ENXIO;
18ad7996 4180 }
40ca9fdf
HMH		 4181
4182 mutex_unlock(&fan_mutex);
4183 return rc;
18ad7996
HMH		 4184}
4185
4186static int fan_set_disable(void)
4187{
40ca9fdf
HMH		 4188 int rc;
4189
ecf2a80a
HMH		 4190 if (!fan_control_allowed)
4191 return -EPERM;
4192
40ca9fdf
HMH		 4193 rc = mutex_lock_interruptible(&fan_mutex);
4194 if (rc < 0)
4195 return rc;
4196
4197 rc = 0;
18ad7996 4198 switch (fan_control_access_mode) {
efa27145
HMH		 4199 case TPACPI_FAN_WR_ACPI_FANS:
4200 case TPACPI_FAN_WR_TPEC:
18ad7996 4201 if (!acpi_ec_write(fan_status_offset, 0x00))
40ca9fdf 4202 rc = -EIO;
fe98a52c
HMH		 4203 else {
4204 fan_control_desired_level = 0;
d8fd94d9 4205 tp_features.fan_ctrl_status_undef = 0;
fe98a52c 4206 }
18ad7996
HMH		 4207 break;
4208
efa27145 4209 case TPACPI_FAN_WR_ACPI_SFAN:
1c6a334e 4210 if (!acpi_evalf(sfan_handle, NULL, NULL, "vd", 0x00))
40ca9fdf 4211 rc = -EIO;
fe98a52c
HMH		 4212 else
4213 fan_control_desired_level = 0;
1c6a334e
HMH		 4214 break;
4215
18ad7996 4216 default:
40ca9fdf 4217 rc = -ENXIO;
18ad7996 4218 }
40ca9fdf 4219
fe98a52c 4220
40ca9fdf
HMH		 4221 mutex_unlock(&fan_mutex);
4222 return rc;
56b6aeb0
HMH		 4223}
4224
4225static int fan_set_speed(int speed)
4226{
40ca9fdf
HMH		 4227 int rc;
4228
ecf2a80a
HMH		 4229 if (!fan_control_allowed)
4230 return -EPERM;
4231
40ca9fdf
HMH		 4232 rc = mutex_lock_interruptible(&fan_mutex);
4233 if (rc < 0)
4234 return rc;
4235
4236 rc = 0;
56b6aeb0 4237 switch (fan_control_access_mode) {
efa27145 4238 case TPACPI_FAN_WR_ACPI_FANS:
56b6aeb0
HMH		 4239 if (speed >= 0 && speed <= 65535) {
4240 if (!acpi_evalf(fans_handle, NULL, NULL, "vddd",
4241 speed, speed, speed))
40ca9fdf 4242 rc = -EIO;
56b6aeb0 4243 } else
40ca9fdf 4244 rc = -EINVAL;
56b6aeb0
HMH		 4245 break;
4246
4247 default:
40ca9fdf 4248 rc = -ENXIO;
56b6aeb0 4249 }
40ca9fdf
HMH		 4250
4251 mutex_unlock(&fan_mutex);
4252 return rc;
56b6aeb0
HMH		 4253}
4254
4255static int fan_read(char *p)
4256{
4257 int len = 0;
4258 int rc;
4259 u8 status;
4260 unsigned int speed = 0;
4261
4262 switch (fan_status_access_mode) {
efa27145 4263 case TPACPI_FAN_RD_ACPI_GFAN:
56b6aeb0 4264 /* 570, 600e/x, 770e, 770x */
fe98a52c 4265 if ((rc = fan_get_status_safe(&status)) < 0)
56b6aeb0
HMH		 4266 return rc;
4267
4268 len += sprintf(p + len, "status:\t\t%s\n"
4269 "level:\t\t%d\n",
4270 (status != 0) ? "enabled" : "disabled", status);
4271 break;
4272
efa27145 4273 case TPACPI_FAN_RD_TPEC:
56b6aeb0 4274 /* all except 570, 600e/x, 770e, 770x */
fe98a52c 4275 if ((rc = fan_get_status_safe(&status)) < 0)
56b6aeb0
HMH		 4276 return rc;
4277
d8fd94d9 4278 if (unlikely(tp_features.fan_ctrl_status_undef)) {
56b6aeb0 4279 if (status != fan_control_initial_status)
d8fd94d9 4280 tp_features.fan_ctrl_status_undef = 0;
56b6aeb0
HMH		 4281 else
4282 /* Return most likely status. In fact, it
4283 * might be the only possible status */
efa27145 4284 status = TP_EC_FAN_AUTO;
56b6aeb0
HMH		 4285 }
4286
4287 len += sprintf(p + len, "status:\t\t%s\n",
4288 (status != 0) ? "enabled" : "disabled");
4289
56b6aeb0
HMH		 4290 if ((rc = fan_get_speed(&speed)) < 0)
4291 return rc;
4292
4293 len += sprintf(p + len, "speed:\t\t%d\n", speed);
4294
efa27145 4295 if (status & TP_EC_FAN_FULLSPEED)
56b6aeb0
HMH		 4296 /* Disengaged mode takes precedence */
4297 len += sprintf(p + len, "level:\t\tdisengaged\n");
efa27145 4298 else if (status & TP_EC_FAN_AUTO)
56b6aeb0
HMH		 4299 len += sprintf(p + len, "level:\t\tauto\n");
4300 else
4301 len += sprintf(p + len, "level:\t\t%d\n", status);
4302 break;
4303
efa27145 4304 case TPACPI_FAN_NONE:
56b6aeb0
HMH		 4305 default:
4306 len += sprintf(p + len, "status:\t\tnot supported\n");
4307 }
4308
efa27145 4309 if (fan_control_commands & TPACPI_FAN_CMD_LEVEL) {
56b6aeb0
HMH		 4310 len += sprintf(p + len, "commands:\tlevel <level>");
4311
4312 switch (fan_control_access_mode) {
efa27145 4313 case TPACPI_FAN_WR_ACPI_SFAN:
56b6aeb0
HMH		 4314 len += sprintf(p + len, " (<level> is 0-7)\n");
4315 break;
4316
4317 default:
4318 len += sprintf(p + len, " (<level> is 0-7, "
fe98a52c 4319 "auto, disengaged, full-speed)\n");
56b6aeb0
HMH		 4320 break;
4321 }
4322 }
18ad7996 4323
efa27145 4324 if (fan_control_commands & TPACPI_FAN_CMD_ENABLE)
56b6aeb0
HMH		 4325 len += sprintf(p + len, "commands:\tenable, disable\n"
4326 "commands:\twatchdog <timeout> (<timeout> is 0 (off), "
4327 "1-120 (seconds))\n");
1da177e4 4328
efa27145 4329 if (fan_control_commands & TPACPI_FAN_CMD_SPEED)
56b6aeb0
HMH		 4330 len += sprintf(p + len, "commands:\tspeed <speed>"
4331 " (<speed> is 0-65535)\n");
4332
4333 return len;
78f81cc4
BD		 4334}
4335
18ad7996
HMH		 4336static int fan_write_cmd_level(const char *cmd, int *rc)
4337{
4338 int level;
4339
a12095c2 4340 if (strlencmp(cmd, "level auto") == 0)
efa27145 4341 level = TP_EC_FAN_AUTO;
fe98a52c
HMH		 4342 else if ((strlencmp(cmd, "level disengaged") == 0) |
4343 (strlencmp(cmd, "level full-speed") == 0))
efa27145 4344 level = TP_EC_FAN_FULLSPEED;
a12095c2 4345 else if (sscanf(cmd, "level %d", &level) != 1)
18ad7996
HMH		 4346 return 0;
4347
fe98a52c 4348 if ((*rc = fan_set_level_safe(level)) == -ENXIO)
18ad7996
HMH		 4349 printk(IBM_ERR "level command accepted for unsupported "
4350 "access mode %d", fan_control_access_mode);
4351
4352 return 1;
4353}
4354
4355static int fan_write_cmd_enable(const char *cmd, int *rc)
4356{
4357 if (strlencmp(cmd, "enable") != 0)
4358 return 0;
4359
4360 if ((*rc = fan_set_enable()) == -ENXIO)
4361 printk(IBM_ERR "enable command accepted for unsupported "
4362 "access mode %d", fan_control_access_mode);
4363
4364 return 1;
4365}
4366
4367static int fan_write_cmd_disable(const char *cmd, int *rc)
4368{
4369 if (strlencmp(cmd, "disable") != 0)
4370 return 0;
4371
4372 if ((*rc = fan_set_disable()) == -ENXIO)
4373 printk(IBM_ERR "disable command accepted for unsupported "
4374 "access mode %d", fan_control_access_mode);
4375
4376 return 1;
4377}
4378
4379static int fan_write_cmd_speed(const char *cmd, int *rc)
4380{
4381 int speed;
4382
a8b7a662
HMH		 4383 /* TODO:
4384 * Support speed <low> <medium> <high> ? */
4385
18ad7996
HMH		 4386 if (sscanf(cmd, "speed %d", &speed) != 1)
4387 return 0;
4388
4389 if ((*rc = fan_set_speed(speed)) == -ENXIO)
4390 printk(IBM_ERR "speed command accepted for unsupported "
4391 "access mode %d", fan_control_access_mode);
4392
4393 return 1;
4394}
4395
16663a87
HMH		 4396static int fan_write_cmd_watchdog(const char *cmd, int *rc)
4397{
4398 int interval;
4399
4400 if (sscanf(cmd, "watchdog %d", &interval) != 1)
4401 return 0;
4402
4403 if (interval < 0 || interval > 120)
4404 *rc = -EINVAL;
4405 else
4406 fan_watchdog_maxinterval = interval;
4407
4408 return 1;
4409}
4410
18ad7996
HMH		 4411static int fan_write(char *buf)
4412{
4413 char *cmd;
4414 int rc = 0;
4415
4416 while (!rc && (cmd = next_cmd(&buf))) {
efa27145 4417 if (!((fan_control_commands & TPACPI_FAN_CMD_LEVEL) &&
18ad7996 4418 fan_write_cmd_level(cmd, &rc)) &&
efa27145 4419 !((fan_control_commands & TPACPI_FAN_CMD_ENABLE) &&
18ad7996 4420 (fan_write_cmd_enable(cmd, &rc) ||
16663a87
HMH		 4421 fan_write_cmd_disable(cmd, &rc) ||
4422 fan_write_cmd_watchdog(cmd, &rc))) &&
efa27145 4423 !((fan_control_commands & TPACPI_FAN_CMD_SPEED) &&
18ad7996
HMH		 4424 fan_write_cmd_speed(cmd, &rc))
4425 )
4426 rc = -EINVAL;
16663a87
HMH		 4427 else if (!rc)
4428 fan_watchdog_reset();
18ad7996
HMH		 4429 }
4430
4431 return rc;
4432}
4433
a5763f22
HMH		 4434static struct ibm_struct fan_driver_data = {
4435 .name = "fan",
4436 .read = fan_read,
4437 .write = fan_write,
4438 .exit = fan_exit,
a5763f22
HMH		 4439};
4440
56b6aeb0
HMH		 4441/****************************************************************************
4442 ****************************************************************************
4443 *
4444 * Infrastructure
4445 *
4446 ****************************************************************************
4447 ****************************************************************************/
4448
7fd40029
HMH		 4449/* sysfs name ---------------------------------------------------------- */
4450static ssize_t thinkpad_acpi_pdev_name_show(struct device *dev,
4451 struct device_attribute *attr,
4452 char *buf)
4453{
4454 return snprintf(buf, PAGE_SIZE, "%s\n", IBM_NAME);
4455}
4456
4457static struct device_attribute dev_attr_thinkpad_acpi_pdev_name =
4458 __ATTR(name, S_IRUGO, thinkpad_acpi_pdev_name_show, NULL);
4459
4460/* --------------------------------------------------------------------- */
4461
56b6aeb0 4462/* /proc support */
94954cc6 4463static struct proc_dir_entry *proc_dir;
16663a87 4464
56b6aeb0 4465/* Subdriver registry */
a5763f22
HMH		 4466static LIST_HEAD(tpacpi_all_drivers);
4467
1da177e4 4468
56b6aeb0
HMH		 4469/*
4470 * Module and infrastructure proble, init and exit handling
4471 */
1da177e4 4472
fe08bc4b 4473#ifdef CONFIG_THINKPAD_ACPI_DEBUG
a5763f22 4474static const char * __init str_supported(int is_supported)
fe08bc4b 4475{
a5763f22 4476 static char text_unsupported[] __initdata = "not supported";
fe08bc4b 4477
a5763f22 4478 return (is_supported)? &text_unsupported[4] : &text_unsupported[0];
fe08bc4b
HMH		 4479}
4480#endif /* CONFIG_THINKPAD_ACPI_DEBUG */
4481
a5763f22 4482static int __init ibm_init(struct ibm_init_struct *iibm)
1da177e4
LT		 4483{
4484 int ret;
a5763f22 4485 struct ibm_struct *ibm = iibm->data;
1da177e4
LT		 4486 struct proc_dir_entry *entry;
4487
a5763f22
HMH		 4488 BUG_ON(ibm == NULL);
4489
4490 INIT_LIST_HEAD(&ibm->all_drivers);
4491
92641177 4492 if (ibm->flags.experimental && !experimental)
1da177e4
LT		 4493 return 0;
4494
fe08bc4b
HMH		 4495 dbg_printk(TPACPI_DBG_INIT,
4496 "probing for %s\n", ibm->name);
4497
a5763f22
HMH		 4498 if (iibm->init) {
4499 ret = iibm->init(iibm);
5fba344c
HMH		 4500 if (ret > 0)
4501 return 0; /* probe failed */
4502 if (ret)
1da177e4 4503 return ret;
a5763f22 4504
92641177 4505 ibm->flags.init_called = 1;
1da177e4
LT		 4506 }
4507
8d376cd6
HMH		 4508 if (ibm->acpi) {
4509 if (ibm->acpi->hid) {
4510 ret = register_tpacpi_subdriver(ibm);
4511 if (ret)
4512 goto err_out;
4513 }
5fba344c 4514
8d376cd6
HMH		 4515 if (ibm->acpi->notify) {
4516 ret = setup_acpi_notify(ibm);
4517 if (ret == -ENODEV) {
4518 printk(IBM_NOTICE "disabling subdriver %s\n",
4519 ibm->name);
4520 ret = 0;
4521 goto err_out;
4522 }
4523 if (ret < 0)
4524 goto err_out;
5fba344c 4525 }
5fba344c
HMH		 4526 }
4527
fe08bc4b
HMH		 4528 dbg_printk(TPACPI_DBG_INIT,
4529 "%s installed\n", ibm->name);
4530
78f81cc4
BD		 4531 if (ibm->read) {
4532 entry = create_proc_entry(ibm->name,
4533 S_IFREG | S_IRUGO | S_IWUSR,
4534 proc_dir);
4535 if (!entry) {
4536 printk(IBM_ERR "unable to create proc entry %s\n",
4537 ibm->name);
5fba344c
HMH		 4538 ret = -ENODEV;
4539 goto err_out;
78f81cc4
BD		 4540 }
4541 entry->owner = THIS_MODULE;
4542 entry->data = ibm;
8d376cd6 4543 entry->read_proc = &dispatch_procfs_read;
78f81cc4 4544 if (ibm->write)
8d376cd6 4545 entry->write_proc = &dispatch_procfs_write;
92641177 4546 ibm->flags.proc_created = 1;
78f81cc4 4547 }
1da177e4 4548
a5763f22
HMH		 4549 list_add_tail(&ibm->all_drivers, &tpacpi_all_drivers);
4550
1da177e4 4551 return 0;
5fba344c
HMH		 4552
4553err_out:
fe08bc4b
HMH		 4554 dbg_printk(TPACPI_DBG_INIT,
4555 "%s: at error exit path with result %d\n",
4556 ibm->name, ret);
4557
5fba344c
HMH		 4558 ibm_exit(ibm);
4559 return (ret < 0)? ret : 0;
1da177e4
LT		 4560}
4561
4562static void ibm_exit(struct ibm_struct *ibm)
4563{
fe08bc4b 4564 dbg_printk(TPACPI_DBG_EXIT, "removing %s\n", ibm->name);
a5763f22
HMH		 4565
4566 list_del_init(&ibm->all_drivers);
4567
8d376cd6 4568 if (ibm->flags.acpi_notify_installed) {
fe08bc4b
HMH		 4569 dbg_printk(TPACPI_DBG_EXIT,
4570 "%s: acpi_remove_notify_handler\n", ibm->name);
8d376cd6
HMH		 4571 BUG_ON(!ibm->acpi);
4572 acpi_remove_notify_handler(*ibm->acpi->handle,
4573 ibm->acpi->type,
4574 dispatch_acpi_notify);
4575 ibm->flags.acpi_notify_installed = 0;
4576 ibm->flags.acpi_notify_installed = 0;
5fba344c 4577 }
1da177e4 4578
92641177 4579 if (ibm->flags.proc_created) {
fe08bc4b
HMH		 4580 dbg_printk(TPACPI_DBG_EXIT,
4581 "%s: remove_proc_entry\n", ibm->name);
1da177e4 4582 remove_proc_entry(ibm->name, proc_dir);
92641177 4583 ibm->flags.proc_created = 0;
5fba344c 4584 }
1da177e4 4585
8d376cd6 4586 if (ibm->flags.acpi_driver_registered) {
fe08bc4b
HMH		 4587 dbg_printk(TPACPI_DBG_EXIT,
4588 "%s: acpi_bus_unregister_driver\n", ibm->name);
8d376cd6
HMH		 4589 BUG_ON(!ibm->acpi);
4590 acpi_bus_unregister_driver(ibm->acpi->driver);
4591 kfree(ibm->acpi->driver);
4592 ibm->acpi->driver = NULL;
4593 ibm->flags.acpi_driver_registered = 0;
5fba344c
HMH		 4594 }
4595
92641177 4596 if (ibm->flags.init_called && ibm->exit) {
5fba344c 4597 ibm->exit();
92641177 4598 ibm->flags.init_called = 0;
1da177e4 4599 }
a5763f22
HMH		 4600
4601 dbg_printk(TPACPI_DBG_INIT, "finished removing %s\n", ibm->name);
1da177e4
LT		 4602}
4603
56b6aeb0
HMH		 4604/* Probing */
4605
d5a2f2f1 4606static void __init get_thinkpad_model_data(struct thinkpad_id_data *tp)
1da177e4 4607{
1855256c 4608 const struct dmi_device *dev = NULL;
56b6aeb0 4609 char ec_fw_string[18];
1da177e4 4610
d5a2f2f1
HMH		 4611 if (!tp)
4612 return;
4613
4614 memset(tp, 0, sizeof(*tp));
4615
4616 if (dmi_name_in_vendors("IBM"))
4617 tp->vendor = PCI_VENDOR_ID_IBM;
4618 else if (dmi_name_in_vendors("LENOVO"))
4619 tp->vendor = PCI_VENDOR_ID_LENOVO;
4620 else
4621 return;
4622
4623 tp->bios_version_str = kstrdup(dmi_get_system_info(DMI_BIOS_VERSION),
4624 GFP_KERNEL);
4625 if (!tp->bios_version_str)
4626 return;
4627 tp->bios_model = tp->bios_version_str[0]
4628 | (tp->bios_version_str[1] << 8);
4629
56b6aeb0
HMH		 4630 /*
4631 * ThinkPad T23 or newer, A31 or newer, R50e or newer,
4632 * X32 or newer, all Z series; Some models must have an
4633 * up-to-date BIOS or they will not be detected.
4634 *
4635 * See http://thinkwiki.org/wiki/List_of_DMI_IDs
4636 */
4637 while ((dev = dmi_find_device(DMI_DEV_TYPE_OEM_STRING, NULL, dev))) {
4638 if (sscanf(dev->name,
4639 "IBM ThinkPad Embedded Controller -[%17c",
4640 ec_fw_string) == 1) {
4641 ec_fw_string[sizeof(ec_fw_string) - 1] = 0;
4642 ec_fw_string[strcspn(ec_fw_string, " ]")] = 0;
d5a2f2f1
HMH		 4643
4644 tp->ec_version_str = kstrdup(ec_fw_string, GFP_KERNEL);
4645 tp->ec_model = ec_fw_string[0]
4646 | (ec_fw_string[1] << 8);
4647 break;
78f81cc4 4648 }
1da177e4 4649 }
d5a2f2f1
HMH		 4650
4651 tp->model_str = kstrdup(dmi_get_system_info(DMI_PRODUCT_VERSION),
4652 GFP_KERNEL);
4653 if (strnicmp(tp->model_str, "ThinkPad", 8) != 0) {
4654 kfree(tp->model_str);
4655 tp->model_str = NULL;
4656 }
1da177e4
LT		 4657}
4658
5fba344c
HMH		 4659static int __init probe_for_thinkpad(void)
4660{
4661 int is_thinkpad;
4662
4663 if (acpi_disabled)
4664 return -ENODEV;
4665
4666 /*
4667 * Non-ancient models have better DMI tagging, but very old models
4668 * don't.
4669 */
d5a2f2f1 4670 is_thinkpad = (thinkpad_id.model_str != NULL);
5fba344c
HMH		 4671
4672 /* ec is required because many other handles are relative to it */
8d376cd6 4673 IBM_ACPIHANDLE_INIT(ec);
5fba344c
HMH		 4674 if (!ec_handle) {
4675 if (is_thinkpad)
4676 printk(IBM_ERR
4677 "Not yet supported ThinkPad detected!\n");
4678 return -ENODEV;
4679 }
4680
0dcef77c
HMH		 4681 /*
4682 * Risks a regression on very old machines, but reduces potential
4683 * false positives a damn great deal
4684 */
4685 if (!is_thinkpad)
d5a2f2f1 4686 is_thinkpad = (thinkpad_id.vendor == PCI_VENDOR_ID_IBM);
0dcef77c
HMH		 4687
4688 if (!is_thinkpad && !force_load)
4689 return -ENODEV;
4690
5fba344c
HMH		 4691 return 0;
4692}
4693
4694
56b6aeb0 4695/* Module init, exit, parameters */
1da177e4 4696
a5763f22
HMH		 4697static struct ibm_init_struct ibms_init[] __initdata = {
4698 {
4699 .init = thinkpad_acpi_driver_init,
4700 .data = &thinkpad_acpi_driver_data,
4701 },
4702 {
4703 .init = hotkey_init,
4704 .data = &hotkey_driver_data,
4705 },
4706 {
4707 .init = bluetooth_init,
4708 .data = &bluetooth_driver_data,
4709 },
4710 {
4711 .init = wan_init,
4712 .data = &wan_driver_data,
4713 },
4714 {
4715 .init = video_init,
4716 .data = &video_driver_data,
4717 },
4718 {
4719 .init = light_init,
4720 .data = &light_driver_data,
4721 },
4722#ifdef CONFIG_THINKPAD_ACPI_DOCK
4723 {
4724 .init = dock_init,
4725 .data = &dock_driver_data[0],
4726 },
4727 {
d94a7f16 4728 .init = dock_init2,
a5763f22
HMH		 4729 .data = &dock_driver_data[1],
4730 },
4731#endif
4732#ifdef CONFIG_THINKPAD_ACPI_BAY
4733 {
4734 .init = bay_init,
4735 .data = &bay_driver_data,
4736 },
4737#endif
4738 {
4739 .init = cmos_init,
4740 .data = &cmos_driver_data,
4741 },
4742 {
4743 .init = led_init,
4744 .data = &led_driver_data,
4745 },
4746 {
4747 .init = beep_init,
4748 .data = &beep_driver_data,
4749 },
4750 {
4751 .init = thermal_init,
4752 .data = &thermal_driver_data,
4753 },
4754 {
4755 .data = &ecdump_driver_data,
4756 },
4757 {
4758 .init = brightness_init,
4759 .data = &brightness_driver_data,
4760 },
4761 {
4762 .data = &volume_driver_data,
4763 },
4764 {
4765 .init = fan_init,
4766 .data = &fan_driver_data,
4767 },
4768};
4769
3945ac36 4770static int __init set_ibm_param(const char *val, struct kernel_param *kp)
1da177e4
LT		 4771{
4772 unsigned int i;
a5763f22 4773 struct ibm_struct *ibm;
1da177e4 4774
a5763f22
HMH		 4775 for (i = 0; i < ARRAY_SIZE(ibms_init); i++) {
4776 ibm = ibms_init[i].data;
4777 BUG_ON(ibm == NULL);
4778
4779 if (strcmp(ibm->name, kp->name) == 0 && ibm->write) {
4780 if (strlen(val) > sizeof(ibms_init[i].param) - 2)
78f81cc4 4781 return -ENOSPC;
a5763f22
HMH		 4782 strcpy(ibms_init[i].param, val);
4783 strcat(ibms_init[i].param, ",");
78f81cc4
BD		 4784 return 0;
4785 }
a5763f22 4786 }
1da177e4 4787
1da177e4
LT		 4788 return -EINVAL;
4789}
4790
56b6aeb0
HMH		 4791static int experimental;
4792module_param(experimental, int, 0);
4793
132ce091
HMH		 4794static u32 dbg_level;
4795module_param_named(debug, dbg_level, uint, 0);
4796
0dcef77c 4797static int force_load;
86cc9445 4798module_param(force_load, bool, 0);
0dcef77c 4799
ecf2a80a 4800static int fan_control_allowed;
86cc9445 4801module_param_named(fan_control, fan_control_allowed, bool, 0);
ecf2a80a 4802
24d3b774
HMH		 4803static int brightness_mode;
4804module_param_named(brightness_mode, brightness_mode, int, 0);
4805
ff80f137
HMH		 4806static unsigned int hotkey_report_mode;
4807module_param(hotkey_report_mode, uint, 0);
4808
1da177e4
LT		 4809#define IBM_PARAM(feature) \
4810 module_param_call(feature, set_ibm_param, NULL, NULL, 0)
4811
78f81cc4
BD		 4812IBM_PARAM(hotkey);
4813IBM_PARAM(bluetooth);
4814IBM_PARAM(video);
4815IBM_PARAM(light);
85998248 4816#ifdef CONFIG_THINKPAD_ACPI_DOCK
78f81cc4 4817IBM_PARAM(dock);
63e5f248 4818#endif
85998248 4819#ifdef CONFIG_THINKPAD_ACPI_BAY
78f81cc4 4820IBM_PARAM(bay);
85998248 4821#endif /* CONFIG_THINKPAD_ACPI_BAY */
78f81cc4
BD		 4822IBM_PARAM(cmos);
4823IBM_PARAM(led);
4824IBM_PARAM(beep);
4825IBM_PARAM(ecdump);
4826IBM_PARAM(brightness);
4827IBM_PARAM(volume);
4828IBM_PARAM(fan);
4829
1def7115 4830static int __init thinkpad_acpi_module_init(void)
1da177e4
LT		 4831{
4832 int ret, i;
4833
8fef502e
HMH		 4834 tpacpi_lifecycle = TPACPI_LIFE_INIT;
4835
ff80f137
HMH		 4836 /* Parameter checking */
4837 if (hotkey_report_mode > 2)
4838 return -EINVAL;
4839
54ae1501 4840 /* Driver-level probe */
d5a2f2f1
HMH		 4841
4842 get_thinkpad_model_data(&thinkpad_id);
5fba344c 4843 ret = probe_for_thinkpad();
d5a2f2f1
HMH		 4844 if (ret) {
4845 thinkpad_acpi_module_exit();
5fba344c 4846 return ret;
d5a2f2f1 4847 }
1da177e4 4848
54ae1501 4849 /* Driver initialization */
d5a2f2f1 4850
8d376cd6
HMH		 4851 IBM_ACPIHANDLE_INIT(ecrd);
4852 IBM_ACPIHANDLE_INIT(ecwr);
1da177e4 4853
8d376cd6 4854 proc_dir = proc_mkdir(IBM_PROC_DIR, acpi_root_dir);
1da177e4 4855 if (!proc_dir) {
8d376cd6 4856 printk(IBM_ERR "unable to create proc dir " IBM_PROC_DIR);
1def7115 4857 thinkpad_acpi_module_exit();
1da177e4
LT		 4858 return -ENODEV;
4859 }
4860 proc_dir->owner = THIS_MODULE;
78f81cc4 4861
54ae1501
HMH		 4862 ret = platform_driver_register(&tpacpi_pdriver);
4863 if (ret) {
7fd40029 4864 printk(IBM_ERR "unable to register main platform driver\n");
54ae1501
HMH		 4865 thinkpad_acpi_module_exit();
4866 return ret;
4867 }
ac36393d
HMH		 4868 tp_features.platform_drv_registered = 1;
4869
7fd40029
HMH		 4870 ret = platform_driver_register(&tpacpi_hwmon_pdriver);
4871 if (ret) {
4872 printk(IBM_ERR "unable to register hwmon platform driver\n");
4873 thinkpad_acpi_module_exit();
4874 return ret;
4875 }
4876 tp_features.sensors_pdrv_registered = 1;
4877
176750d6 4878 ret = tpacpi_create_driver_attributes(&tpacpi_pdriver.driver);
2369cc94
HMH		 4879 if (!ret) {
4880 tp_features.platform_drv_attrs_registered = 1;
4881 ret = tpacpi_create_driver_attributes(&tpacpi_hwmon_pdriver.driver);
4882 }
176750d6
HMH		 4883 if (ret) {
4884 printk(IBM_ERR "unable to create sysfs driver attributes\n");
4885 thinkpad_acpi_module_exit();
4886 return ret;
4887 }
2369cc94 4888 tp_features.sensors_pdrv_attrs_registered = 1;
176750d6 4889
54ae1501
HMH		 4890
4891 /* Device initialization */
4892 tpacpi_pdev = platform_device_register_simple(IBM_DRVR_NAME, -1,
4893 NULL, 0);
4894 if (IS_ERR(tpacpi_pdev)) {
4895 ret = PTR_ERR(tpacpi_pdev);
4896 tpacpi_pdev = NULL;
4897 printk(IBM_ERR "unable to register platform device\n");
4898 thinkpad_acpi_module_exit();
4899 return ret;
4900 }
7fd40029
HMH		 4901 tpacpi_sensors_pdev = platform_device_register_simple(
4902 IBM_HWMON_DRVR_NAME,
4903 -1, NULL, 0);
4904 if (IS_ERR(tpacpi_sensors_pdev)) {
4905 ret = PTR_ERR(tpacpi_sensors_pdev);
4906 tpacpi_sensors_pdev = NULL;
4907 printk(IBM_ERR "unable to register hwmon platform device\n");
4908 thinkpad_acpi_module_exit();
4909 return ret;
4910 }
4911 ret = device_create_file(&tpacpi_sensors_pdev->dev,
4912 &dev_attr_thinkpad_acpi_pdev_name);
4913 if (ret) {
4914 printk(IBM_ERR
4915 "unable to create sysfs hwmon device attributes\n");
4916 thinkpad_acpi_module_exit();
4917 return ret;
4918 }
4919 tp_features.sensors_pdev_attrs_registered = 1;
4920 tpacpi_hwmon = hwmon_device_register(&tpacpi_sensors_pdev->dev);
54ae1501
HMH		 4921 if (IS_ERR(tpacpi_hwmon)) {
4922 ret = PTR_ERR(tpacpi_hwmon);
4923 tpacpi_hwmon = NULL;
4924 printk(IBM_ERR "unable to register hwmon device\n");
4925 thinkpad_acpi_module_exit();
4926 return ret;
4927 }
8523ed6f 4928 mutex_init(&tpacpi_inputdev_send_mutex);
7f5d1cd6
HMH		 4929 tpacpi_inputdev = input_allocate_device();
4930 if (!tpacpi_inputdev) {
4931 printk(IBM_ERR "unable to allocate input device\n");
4932 thinkpad_acpi_module_exit();
4933 return -ENOMEM;
4934 } else {
4935 /* Prepare input device, but don't register */
4936 tpacpi_inputdev->name = "ThinkPad Extra Buttons";
4937 tpacpi_inputdev->phys = IBM_DRVR_NAME "/input0";
4938 tpacpi_inputdev->id.bustype = BUS_HOST;
edf0e0e5
HMH		 4939 tpacpi_inputdev->id.vendor = (thinkpad_id.vendor) ?
4940 thinkpad_id.vendor :
4941 PCI_VENDOR_ID_IBM;
7f5d1cd6
HMH		 4942 tpacpi_inputdev->id.product = TPACPI_HKEY_INPUT_PRODUCT;
4943 tpacpi_inputdev->id.version = TPACPI_HKEY_INPUT_VERSION;
4944 }
a5763f22
HMH		 4945 for (i = 0; i < ARRAY_SIZE(ibms_init); i++) {
4946 ret = ibm_init(&ibms_init[i]);
4947 if (ret >= 0 && *ibms_init[i].param)
4948 ret = ibms_init[i].data->write(ibms_init[i].param);
1da177e4 4949 if (ret < 0) {
1def7115 4950 thinkpad_acpi_module_exit();
1da177e4
LT		 4951 return ret;
4952 }
4953 }
7f5d1cd6
HMH		 4954 ret = input_register_device(tpacpi_inputdev);
4955 if (ret < 0) {
4956 printk(IBM_ERR "unable to register input device\n");
4957 thinkpad_acpi_module_exit();
4958 return ret;
4959 } else {
4960 tp_features.input_device_registered = 1;
4961 }
1da177e4 4962
8fef502e 4963 tpacpi_lifecycle = TPACPI_LIFE_RUNNING;
1da177e4
LT		 4964 return 0;
4965}
4966
1def7115 4967static void thinkpad_acpi_module_exit(void)
56b6aeb0 4968{
a5763f22
HMH		 4969 struct ibm_struct *ibm, *itmp;
4970
8fef502e
HMH		 4971 tpacpi_lifecycle = TPACPI_LIFE_EXITING;
4972
a5763f22
HMH		 4973 list_for_each_entry_safe_reverse(ibm, itmp,
4974 &tpacpi_all_drivers,
4975 all_drivers) {
4976 ibm_exit(ibm);
4977 }
56b6aeb0 4978
a5763f22 4979 dbg_printk(TPACPI_DBG_INIT, "finished subdriver exit path...\n");
56b6aeb0 4980
7f5d1cd6
HMH		 4981 if (tpacpi_inputdev) {
4982 if (tp_features.input_device_registered)
4983 input_unregister_device(tpacpi_inputdev);
4984 else
4985 input_free_device(tpacpi_inputdev);
4986 }
4987
54ae1501
HMH		 4988 if (tpacpi_hwmon)
4989 hwmon_device_unregister(tpacpi_hwmon);
4990
7fd40029
HMH		 4991 if (tp_features.sensors_pdev_attrs_registered)
4992 device_remove_file(&tpacpi_sensors_pdev->dev,
4993 &dev_attr_thinkpad_acpi_pdev_name);
4994 if (tpacpi_sensors_pdev)
4995 platform_device_unregister(tpacpi_sensors_pdev);
54ae1501
HMH		 4996 if (tpacpi_pdev)
4997 platform_device_unregister(tpacpi_pdev);
4998
2369cc94
HMH		 4999 if (tp_features.sensors_pdrv_attrs_registered)
5000 tpacpi_remove_driver_attributes(&tpacpi_hwmon_pdriver.driver);
ac36393d
HMH		 5001 if (tp_features.platform_drv_attrs_registered)
5002 tpacpi_remove_driver_attributes(&tpacpi_pdriver.driver);
5003
7fd40029
HMH		 5004 if (tp_features.sensors_pdrv_registered)
5005 platform_driver_unregister(&tpacpi_hwmon_pdriver);
5006
ac36393d
HMH		 5007 if (tp_features.platform_drv_registered)
5008 platform_driver_unregister(&tpacpi_pdriver);
54ae1501 5009
56b6aeb0 5010 if (proc_dir)
8d376cd6 5011 remove_proc_entry(IBM_PROC_DIR, acpi_root_dir);
56b6aeb0 5012
d5a2f2f1
HMH		 5013 kfree(thinkpad_id.bios_version_str);
5014 kfree(thinkpad_id.ec_version_str);
5015 kfree(thinkpad_id.model_str);
56b6aeb0
HMH		 5016}
5017
1def7115
HMH		 5018module_init(thinkpad_acpi_module_init);
5019module_exit(thinkpad_acpi_module_exit);
Linux kernel - Deliverables
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