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ACPI: thinkpad-acpi: check version of hot key firmware
[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"
741553c2 25#define TPACPI_SYSFS_VERSION 0x010000
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
HMH		 528static struct platform_device *tpacpi_pdev;
529static struct class_device *tpacpi_hwmon;
7f5d1cd6 530static struct input_dev *tpacpi_inputdev;
8523ed6f 531static struct mutex tpacpi_inputdev_send_mutex;
54ae1501 532
e295e850
HMH		 533
534static int tpacpi_resume_handler(struct platform_device *pdev)
535{
536 struct ibm_struct *ibm, *itmp;
537
538 list_for_each_entry_safe(ibm, itmp,
539 &tpacpi_all_drivers,
540 all_drivers) {
541 if (ibm->resume)
542 (ibm->resume)();
543 }
544
545 return 0;
546}
547
54ae1501
HMH		 548static struct platform_driver tpacpi_pdriver = {
549 .driver = {
550 .name = IBM_DRVR_NAME,
551 .owner = THIS_MODULE,
552 },
e295e850 553 .resume = tpacpi_resume_handler,
54ae1501
HMH		 554};
555
556
176750d6
HMH		 557/*************************************************************************
558 * thinkpad-acpi driver attributes
559 */
560
561/* interface_version --------------------------------------------------- */
562static ssize_t tpacpi_driver_interface_version_show(
563 struct device_driver *drv,
564 char *buf)
565{
566 return snprintf(buf, PAGE_SIZE, "0x%08x\n", TPACPI_SYSFS_VERSION);
567}
568
569static DRIVER_ATTR(interface_version, S_IRUGO,
570 tpacpi_driver_interface_version_show, NULL);
571
572/* debug_level --------------------------------------------------------- */
573static ssize_t tpacpi_driver_debug_show(struct device_driver *drv,
574 char *buf)
575{
576 return snprintf(buf, PAGE_SIZE, "0x%04x\n", dbg_level);
577}
578
579static ssize_t tpacpi_driver_debug_store(struct device_driver *drv,
580 const char *buf, size_t count)
581{
582 unsigned long t;
176750d6 583
7252374a 584 if (parse_strtoul(buf, 0xffff, &t))
176750d6
HMH		 585 return -EINVAL;
586
587 dbg_level = t;
588
589 return count;
590}
591
592static DRIVER_ATTR(debug_level, S_IWUSR | S_IRUGO,
593 tpacpi_driver_debug_show, tpacpi_driver_debug_store);
594
595/* version ------------------------------------------------------------- */
596static ssize_t tpacpi_driver_version_show(struct device_driver *drv,
597 char *buf)
598{
599 return snprintf(buf, PAGE_SIZE, "%s v%s\n", IBM_DESC, IBM_VERSION);
600}
601
602static DRIVER_ATTR(version, S_IRUGO,
603 tpacpi_driver_version_show, NULL);
604
605/* --------------------------------------------------------------------- */
606
607static struct driver_attribute* tpacpi_driver_attributes[] = {
608 &driver_attr_debug_level, &driver_attr_version,
609 &driver_attr_interface_version,
610};
611
612static int __init tpacpi_create_driver_attributes(struct device_driver *drv)
613{
614 int i, res;
615
616 i = 0;
617 res = 0;
618 while (!res && i < ARRAY_SIZE(tpacpi_driver_attributes)) {
619 res = driver_create_file(drv, tpacpi_driver_attributes[i]);
620 i++;
621 }
622
623 return res;
624}
625
626static void tpacpi_remove_driver_attributes(struct device_driver *drv)
627{
628 int i;
629
630 for(i = 0; i < ARRAY_SIZE(tpacpi_driver_attributes); i++)
631 driver_remove_file(drv, tpacpi_driver_attributes[i]);
632}
633
7252374a
HMH		 634/*************************************************************************
635 * sysfs support helpers
636 */
637
638struct attribute_set_obj {
639 struct attribute_set s;
640 struct attribute *a;
641} __attribute__((packed));
642
643static struct attribute_set *create_attr_set(unsigned int max_members,
644 const char* name)
645{
646 struct attribute_set_obj *sobj;
647
648 if (max_members == 0)
649 return NULL;
650
651 /* Allocates space for implicit NULL at the end too */
652 sobj = kzalloc(sizeof(struct attribute_set_obj) +
653 max_members * sizeof(struct attribute *),
654 GFP_KERNEL);
655 if (!sobj)
656 return NULL;
657 sobj->s.max_members = max_members;
658 sobj->s.group.attrs = &sobj->a;
659 sobj->s.group.name = name;
660
661 return &sobj->s;
662}
663
664/* not multi-threaded safe, use it in a single thread per set */
665static int add_to_attr_set(struct attribute_set* s, struct attribute *attr)
666{
667 if (!s || !attr)
668 return -EINVAL;
669
670 if (s->members >= s->max_members)
671 return -ENOMEM;
672
673 s->group.attrs[s->members] = attr;
674 s->members++;
675
676 return 0;
677}
678
679static int add_many_to_attr_set(struct attribute_set* s,
680 struct attribute **attr,
681 unsigned int count)
682{
683 int i, res;
684
685 for (i = 0; i < count; i++) {
686 res = add_to_attr_set(s, attr[i]);
687 if (res)
688 return res;
689 }
690
691 return 0;
692}
693
694static void delete_attr_set(struct attribute_set* s, struct kobject *kobj)
695{
696 sysfs_remove_group(kobj, &s->group);
697 destroy_attr_set(s);
698}
699
700static int parse_strtoul(const char *buf,
701 unsigned long max, unsigned long *value)
702{
703 char *endp;
704
705 *value = simple_strtoul(buf, &endp, 0);
706 while (*endp && isspace(*endp))
707 endp++;
708 if (*endp || *value > max)
709 return -EINVAL;
710
711 return 0;
712}
713
56b6aeb0
HMH		 714/****************************************************************************
715 ****************************************************************************
716 *
717 * Subdrivers
718 *
719 ****************************************************************************
720 ****************************************************************************/
721
722/*************************************************************************
142cfc90 723 * thinkpad-acpi init subdriver
56b6aeb0
HMH		 724 */
725
a5763f22 726static int __init thinkpad_acpi_driver_init(struct ibm_init_struct *iibm)
1da177e4
LT		 727{
728 printk(IBM_INFO "%s v%s\n", IBM_DESC, IBM_VERSION);
729 printk(IBM_INFO "%s\n", IBM_URL);
730
d5a2f2f1
HMH		 731 printk(IBM_INFO "ThinkPad BIOS %s, EC %s\n",
732 (thinkpad_id.bios_version_str) ?
733 thinkpad_id.bios_version_str : "unknown",
734 (thinkpad_id.ec_version_str) ?
735 thinkpad_id.ec_version_str : "unknown");
736
737 if (thinkpad_id.vendor && thinkpad_id.model_str)
738 printk(IBM_INFO "%s %s\n",
739 (thinkpad_id.vendor == PCI_VENDOR_ID_IBM) ?
740 "IBM" : ((thinkpad_id.vendor ==
741 PCI_VENDOR_ID_LENOVO) ?
742 "Lenovo" : "Unknown vendor"),
743 thinkpad_id.model_str);
3945ac36 744
1da177e4
LT		 745 return 0;
746}
747
643f12db 748static int thinkpad_acpi_driver_read(char *p)
1da177e4
LT		 749{
750 int len = 0;
751
752 len += sprintf(p + len, "driver:\t\t%s\n", IBM_DESC);
753 len += sprintf(p + len, "version:\t%s\n", IBM_VERSION);
754
755 return len;
756}
757
a5763f22
HMH		 758static struct ibm_struct thinkpad_acpi_driver_data = {
759 .name = "driver",
760 .read = thinkpad_acpi_driver_read,
761};
762
56b6aeb0
HMH		 763/*************************************************************************
764 * Hotkey subdriver
765 */
766
78f81cc4 767static int hotkey_orig_status;
ae92bd17 768static u32 hotkey_orig_mask;
9b010de5 769static u32 hotkey_all_mask;
6a38abbf
HMH		 770static u32 hotkey_reserved_mask;
771
edf0e0e5 772static u16 *hotkey_keycode_map;
78f81cc4 773
94954cc6 774static struct attribute_set *hotkey_dev_attributes;
a0416420 775
74941a69
HMH		 776static int hotkey_get_wlsw(int *status)
777{
778 if (!acpi_evalf(hkey_handle, status, "WLSW", "d"))
779 return -EIO;
780 return 0;
781}
782
a0416420
HMH		 783/* sysfs hotkey enable ------------------------------------------------- */
784static ssize_t hotkey_enable_show(struct device *dev,
785 struct device_attribute *attr,
786 char *buf)
787{
ae92bd17
HMH		 788 int res, status;
789 u32 mask;
a0416420
HMH		 790
791 res = hotkey_get(&status, &mask);
792 if (res)
793 return res;
794
795 return snprintf(buf, PAGE_SIZE, "%d\n", status);
796}
797
798static ssize_t hotkey_enable_store(struct device *dev,
799 struct device_attribute *attr,
800 const char *buf, size_t count)
801{
802 unsigned long t;
ae92bd17
HMH		 803 int res, status;
804 u32 mask;
a0416420
HMH		 805
806 if (parse_strtoul(buf, 1, &t))
807 return -EINVAL;
808
809 res = hotkey_get(&status, &mask);
810 if (!res)
811 res = hotkey_set(t, mask);
812
813 return (res) ? res : count;
814}
815
816static struct device_attribute dev_attr_hotkey_enable =
cc4c24e1 817 __ATTR(hotkey_enable, S_IWUSR | S_IRUGO,
a0416420
HMH		 818 hotkey_enable_show, hotkey_enable_store);
819
820/* sysfs hotkey mask --------------------------------------------------- */
821static ssize_t hotkey_mask_show(struct device *dev,
822 struct device_attribute *attr,
823 char *buf)
824{
ae92bd17
HMH		 825 int res, status;
826 u32 mask;
a0416420
HMH		 827
828 res = hotkey_get(&status, &mask);
829 if (res)
830 return res;
831
ae92bd17 832 return snprintf(buf, PAGE_SIZE, "0x%08x\n", mask);
a0416420
HMH		 833}
834
835static ssize_t hotkey_mask_store(struct device *dev,
836 struct device_attribute *attr,
837 const char *buf, size_t count)
838{
839 unsigned long t;
ae92bd17
HMH		 840 int res, status;
841 u32 mask;
a0416420 842
ae92bd17 843 if (parse_strtoul(buf, 0xffffffffUL, &t))
a0416420
HMH		 844 return -EINVAL;
845
846 res = hotkey_get(&status, &mask);
847 if (!res)
848 hotkey_set(status, t);
849
850 return (res) ? res : count;
851}
852
853static struct device_attribute dev_attr_hotkey_mask =
cc4c24e1 854 __ATTR(hotkey_mask, S_IWUSR | S_IRUGO,
a0416420
HMH		 855 hotkey_mask_show, hotkey_mask_store);
856
857/* sysfs hotkey bios_enabled ------------------------------------------- */
858static ssize_t hotkey_bios_enabled_show(struct device *dev,
859 struct device_attribute *attr,
860 char *buf)
861{
862 return snprintf(buf, PAGE_SIZE, "%d\n", hotkey_orig_status);
863}
864
865static struct device_attribute dev_attr_hotkey_bios_enabled =
cc4c24e1 866 __ATTR(hotkey_bios_enabled, S_IRUGO, hotkey_bios_enabled_show, NULL);
a0416420
HMH		 867
868/* sysfs hotkey bios_mask ---------------------------------------------- */
869static ssize_t hotkey_bios_mask_show(struct device *dev,
870 struct device_attribute *attr,
871 char *buf)
872{
ae92bd17 873 return snprintf(buf, PAGE_SIZE, "0x%08x\n", hotkey_orig_mask);
a0416420
HMH		 874}
875
876static struct device_attribute dev_attr_hotkey_bios_mask =
cc4c24e1 877 __ATTR(hotkey_bios_mask, S_IRUGO, hotkey_bios_mask_show, NULL);
a0416420 878
9b010de5
HMH		 879/* sysfs hotkey all_mask ----------------------------------------------- */
880static ssize_t hotkey_all_mask_show(struct device *dev,
881 struct device_attribute *attr,
882 char *buf)
883{
884 return snprintf(buf, PAGE_SIZE, "0x%08x\n", hotkey_all_mask);
885}
886
887static struct device_attribute dev_attr_hotkey_all_mask =
888 __ATTR(hotkey_all_mask, S_IRUGO, hotkey_all_mask_show, NULL);
889
890/* sysfs hotkey recommended_mask --------------------------------------- */
891static ssize_t hotkey_recommended_mask_show(struct device *dev,
892 struct device_attribute *attr,
893 char *buf)
894{
895 return snprintf(buf, PAGE_SIZE, "0x%08x\n",
896 hotkey_all_mask & ~hotkey_reserved_mask);
897}
898
899static struct device_attribute dev_attr_hotkey_recommended_mask =
900 __ATTR(hotkey_recommended_mask, S_IRUGO,
901 hotkey_recommended_mask_show, NULL);
902
74941a69
HMH		 903/* sysfs hotkey radio_sw ----------------------------------------------- */
904static ssize_t hotkey_radio_sw_show(struct device *dev,
905 struct device_attribute *attr,
906 char *buf)
907{
908 int res, s;
909 res = hotkey_get_wlsw(&s);
910 if (res < 0)
911 return res;
912
913 return snprintf(buf, PAGE_SIZE, "%d\n", !!s);
914}
915
916static struct device_attribute dev_attr_hotkey_radio_sw =
917 __ATTR(hotkey_radio_sw, S_IRUGO, hotkey_radio_sw_show, NULL);
918
ff80f137
HMH		 919/* sysfs hotkey report_mode -------------------------------------------- */
920static ssize_t hotkey_report_mode_show(struct device *dev,
921 struct device_attribute *attr,
922 char *buf)
923{
924 return snprintf(buf, PAGE_SIZE, "%d\n",
925 (hotkey_report_mode != 0) ? hotkey_report_mode : 1);
926}
927
928static struct device_attribute dev_attr_hotkey_report_mode =
929 __ATTR(hotkey_report_mode, S_IRUGO, hotkey_report_mode_show, NULL);
930
a0416420
HMH		 931/* --------------------------------------------------------------------- */
932
ff80f137
HMH		 933static struct attribute *hotkey_attributes[] __initdata = {
934 &dev_attr_hotkey_enable.attr,
935 &dev_attr_hotkey_report_mode.attr,
936};
937
938static struct attribute *hotkey_mask_attributes[] __initdata = {
a0416420
HMH		 939 &dev_attr_hotkey_mask.attr,
940 &dev_attr_hotkey_bios_enabled.attr,
941 &dev_attr_hotkey_bios_mask.attr,
9b010de5
HMH		 942 &dev_attr_hotkey_all_mask.attr,
943 &dev_attr_hotkey_recommended_mask.attr,
a0416420
HMH		 944};
945
a5763f22 946static int __init hotkey_init(struct ibm_init_struct *iibm)
56b6aeb0 947{
edf0e0e5
HMH		 948
949 static u16 ibm_keycode_map[] __initdata = {
950 /* Scan Codes 0x00 to 0x0B: ACPI HKEY FN+F1..F12 */
951 KEY_FN_F1, KEY_FN_F2, KEY_COFFEE, KEY_SLEEP,
952 KEY_WLAN, KEY_FN_F6, KEY_SWITCHVIDEOMODE, KEY_FN_F8,
953 KEY_FN_F9, KEY_FN_F10, KEY_FN_F11, KEY_SUSPEND,
954 /* Scan codes 0x0C to 0x0F: Other ACPI HKEY hot keys */
955 KEY_UNKNOWN, /* 0x0C: FN+BACKSPACE */
956 KEY_UNKNOWN, /* 0x0D: FN+INSERT */
957 KEY_UNKNOWN, /* 0x0E: FN+DELETE */
958 KEY_RESERVED, /* 0x0F: FN+HOME (brightness up) */
959 /* Scan codes 0x10 to 0x1F: Extended ACPI HKEY hot keys */
960 KEY_RESERVED, /* 0x10: FN+END (brightness down) */
961 KEY_RESERVED, /* 0x11: FN+PGUP (thinklight toggle) */
962 KEY_UNKNOWN, /* 0x12: FN+PGDOWN */
963 KEY_ZOOM, /* 0x13: FN+SPACE (zoom) */
964 KEY_RESERVED, /* 0x14: VOLUME UP */
965 KEY_RESERVED, /* 0x15: VOLUME DOWN */
966 KEY_RESERVED, /* 0x16: MUTE */
967 KEY_VENDOR, /* 0x17: Thinkpad/AccessIBM/Lenovo */
968 /* (assignments unknown, please report if found) */
969 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN,
970 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN,
971 };
972 static u16 lenovo_keycode_map[] __initdata = {
973 /* Scan Codes 0x00 to 0x0B: ACPI HKEY FN+F1..F12 */
974 KEY_FN_F1, KEY_COFFEE, KEY_BATTERY, KEY_SLEEP,
975 KEY_WLAN, KEY_FN_F6, KEY_SWITCHVIDEOMODE, KEY_FN_F8,
976 KEY_FN_F9, KEY_FN_F10, KEY_FN_F11, KEY_SUSPEND,
977 /* Scan codes 0x0C to 0x0F: Other ACPI HKEY hot keys */
978 KEY_UNKNOWN, /* 0x0C: FN+BACKSPACE */
979 KEY_UNKNOWN, /* 0x0D: FN+INSERT */
980 KEY_UNKNOWN, /* 0x0E: FN+DELETE */
981 KEY_BRIGHTNESSUP, /* 0x0F: FN+HOME (brightness up) */
982 /* Scan codes 0x10 to 0x1F: Extended ACPI HKEY hot keys */
983 KEY_BRIGHTNESSDOWN, /* 0x10: FN+END (brightness down) */
984 KEY_RESERVED, /* 0x11: FN+PGUP (thinklight toggle) */
985 KEY_UNKNOWN, /* 0x12: FN+PGDOWN */
986 KEY_ZOOM, /* 0x13: FN+SPACE (zoom) */
987 KEY_RESERVED, /* 0x14: VOLUME UP */
988 KEY_RESERVED, /* 0x15: VOLUME DOWN */
989 KEY_RESERVED, /* 0x16: MUTE */
990 KEY_VENDOR, /* 0x17: Thinkpad/AccessIBM/Lenovo */
991 /* (assignments unknown, please report if found) */
992 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN,
993 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN,
994 };
995
996#define TPACPI_HOTKEY_MAP_LEN ARRAY_SIZE(ibm_keycode_map)
997#define TPACPI_HOTKEY_MAP_SIZE sizeof(ibm_keycode_map)
998#define TPACPI_HOTKEY_MAP_TYPESIZE sizeof(ibm_keycode_map[0])
999
6a38abbf 1000 int res, i;
74941a69 1001 int status;
1b6521dc 1002 int hkeyv;
b86c4722 1003
fe08bc4b
HMH		 1004 vdbg_printk(TPACPI_DBG_INIT, "initializing hotkey subdriver\n");
1005
6a38abbf
HMH		 1006 BUG_ON(!tpacpi_inputdev);
1007
8d376cd6 1008 IBM_ACPIHANDLE_INIT(hkey);
40ca9fdf 1009 mutex_init(&hotkey_mutex);
5fba344c 1010
56b6aeb0 1011 /* hotkey not supported on 570 */
d8fd94d9 1012 tp_features.hotkey = hkey_handle != NULL;
56b6aeb0 1013
fe08bc4b 1014 vdbg_printk(TPACPI_DBG_INIT, "hotkeys are %s\n",
d8fd94d9 1015 str_supported(tp_features.hotkey));
fe08bc4b 1016
d8fd94d9 1017 if (tp_features.hotkey) {
ff80f137 1018 hotkey_dev_attributes = create_attr_set(8, NULL);
a0416420
HMH		 1019 if (!hotkey_dev_attributes)
1020 return -ENOMEM;
ff80f137
HMH		 1021 res = add_many_to_attr_set(hotkey_dev_attributes,
1022 hotkey_attributes,
1023 ARRAY_SIZE(hotkey_attributes));
a0416420
HMH		 1024 if (res)
1025 return res;
1026
56b6aeb0 1027 /* mask not supported on 570, 600e/x, 770e, 770x, A21e, A2xm/p,
1b6521dc
HMH		 1028 A30, R30, R31, T20-22, X20-21, X22-24. Detected by checking
1029 for HKEY interface version 0x100 */
1030 if (acpi_evalf(hkey_handle, &hkeyv, "MHKV", "qd")) {
1031 if ((hkeyv >> 8) != 1) {
1032 printk(IBM_ERR "unknown version of the "
1033 "HKEY interface: 0x%x\n", hkeyv);
1034 printk(IBM_ERR "please report this to %s\n",
1035 IBM_MAIL);
1036 } else {
1037 /*
1038 * MHKV 0x100 in A31, R40, R40e,
1039 * T4x, X31, and later
1040 * */
1041 tp_features.hotkey_mask = 1;
1042 }
1043 }
56b6aeb0 1044
fe08bc4b 1045 vdbg_printk(TPACPI_DBG_INIT, "hotkey masks are %s\n",
d8fd94d9 1046 str_supported(tp_features.hotkey_mask));
fe08bc4b 1047
9b010de5 1048 if (tp_features.hotkey_mask) {
9b010de5 1049 if (!acpi_evalf(hkey_handle, &hotkey_all_mask,
1b6521dc
HMH		 1050 "MHKA", "qd")) {
1051 printk(IBM_ERR
1052 "missing MHKA handler, "
1053 "please report this to %s\n",
1054 IBM_MAIL);
9b010de5 1055 hotkey_all_mask = 0x080cU; /* FN+F12, FN+F4, FN+F3 */
1b6521dc 1056 }
9b010de5
HMH		 1057 }
1058
b86c4722 1059 res = hotkey_get(&hotkey_orig_status, &hotkey_orig_mask);
a0416420
HMH		 1060 if (!res && tp_features.hotkey_mask) {
1061 res = add_many_to_attr_set(hotkey_dev_attributes,
1062 hotkey_mask_attributes,
1063 ARRAY_SIZE(hotkey_mask_attributes));
1064 }
74941a69
HMH		 1065
1066 /* Not all thinkpads have a hardware radio switch */
1067 if (!res && acpi_evalf(hkey_handle, &status, "WLSW", "qd")) {
1068 tp_features.hotkey_wlsw = 1;
1069 printk(IBM_INFO
1070 "radio switch found; radios are %s\n",
1071 enabled(status, 0));
1072 res = add_to_attr_set(hotkey_dev_attributes,
1073 &dev_attr_hotkey_radio_sw.attr);
1074 }
1075
a0416420
HMH		 1076 if (!res)
1077 res = register_attr_set_with_sysfs(
1078 hotkey_dev_attributes,
1079 &tpacpi_pdev->dev.kobj);
b86c4722
HMH		 1080 if (res)
1081 return res;
6a38abbf 1082
edf0e0e5
HMH		 1083 /* Set up key map */
1084
1085 hotkey_keycode_map = kmalloc(TPACPI_HOTKEY_MAP_SIZE,
1086 GFP_KERNEL);
1087 if (!hotkey_keycode_map) {
1088 printk(IBM_ERR "failed to allocate memory for key map\n");
1089 return -ENOMEM;
1090 }
1091
1092 if (thinkpad_id.vendor == PCI_VENDOR_ID_LENOVO) {
1093 dbg_printk(TPACPI_DBG_INIT,
1094 "using Lenovo default hot key map\n");
1095 memcpy(hotkey_keycode_map, &lenovo_keycode_map,
1096 TPACPI_HOTKEY_MAP_SIZE);
1097 } else {
1098 dbg_printk(TPACPI_DBG_INIT,
1099 "using IBM default hot key map\n");
1100 memcpy(hotkey_keycode_map, &ibm_keycode_map,
1101 TPACPI_HOTKEY_MAP_SIZE);
1102 }
1103
6a38abbf
HMH		 1104 set_bit(EV_KEY, tpacpi_inputdev->evbit);
1105 set_bit(EV_MSC, tpacpi_inputdev->evbit);
1106 set_bit(MSC_SCAN, tpacpi_inputdev->mscbit);
edf0e0e5
HMH		 1107 tpacpi_inputdev->keycodesize = TPACPI_HOTKEY_MAP_TYPESIZE;
1108 tpacpi_inputdev->keycodemax = TPACPI_HOTKEY_MAP_LEN;
1109 tpacpi_inputdev->keycode = hotkey_keycode_map;
1110 for (i = 0; i < TPACPI_HOTKEY_MAP_LEN; i++) {
6a38abbf
HMH		 1111 if (hotkey_keycode_map[i] != KEY_RESERVED) {
1112 set_bit(hotkey_keycode_map[i],
1113 tpacpi_inputdev->keybit);
1114 } else {
1115 if (i < sizeof(hotkey_reserved_mask)*8)
1116 hotkey_reserved_mask |= 1 << i;
1117 }
1118 }
1119
5c29d58f
HMH		 1120 if (tp_features.hotkey_wlsw) {
1121 set_bit(EV_SW, tpacpi_inputdev->evbit);
1122 set_bit(SW_RADIO, tpacpi_inputdev->swbit);
1123 }
1124
1a343760
HMH		 1125 dbg_printk(TPACPI_DBG_INIT,
1126 "enabling hot key handling\n");
1127 res = hotkey_set(1, (hotkey_all_mask & ~hotkey_reserved_mask)
1128 | hotkey_orig_mask);
1129 if (res)
1130 return res;
ff80f137
HMH		 1131
1132 dbg_printk(TPACPI_DBG_INIT,
1133 "legacy hot key reporting over procfs %s\n",
1134 (hotkey_report_mode < 2) ?
1135 "enabled" : "disabled");
56b6aeb0
HMH		 1136 }
1137
d8fd94d9 1138 return (tp_features.hotkey)? 0 : 1;
56b6aeb0
HMH		 1139}
1140
1141static void hotkey_exit(void)
1142{
b86c4722
HMH		 1143 int res;
1144
d8fd94d9 1145 if (tp_features.hotkey) {
fe08bc4b 1146 dbg_printk(TPACPI_DBG_EXIT, "restoring original hotkey mask\n");
b86c4722
HMH		 1147 res = hotkey_set(hotkey_orig_status, hotkey_orig_mask);
1148 if (res)
1149 printk(IBM_ERR "failed to restore hotkey to BIOS defaults\n");
5fba344c 1150 }
a0416420
HMH		 1151
1152 if (hotkey_dev_attributes) {
1153 delete_attr_set(hotkey_dev_attributes, &tpacpi_pdev->dev.kobj);
1154 hotkey_dev_attributes = NULL;
1155 }
56b6aeb0
HMH		 1156}
1157
6a38abbf
HMH		 1158static void tpacpi_input_send_key(unsigned int scancode,
1159 unsigned int keycode)
1160{
1161 if (keycode != KEY_RESERVED) {
8523ed6f
HMH		 1162 mutex_lock(&tpacpi_inputdev_send_mutex);
1163
6a38abbf
HMH		 1164 input_report_key(tpacpi_inputdev, keycode, 1);
1165 if (keycode == KEY_UNKNOWN)
1166 input_event(tpacpi_inputdev, EV_MSC, MSC_SCAN,
1167 scancode);
1168 input_sync(tpacpi_inputdev);
1169
1170 input_report_key(tpacpi_inputdev, keycode, 0);
1171 if (keycode == KEY_UNKNOWN)
1172 input_event(tpacpi_inputdev, EV_MSC, MSC_SCAN,
1173 scancode);
1174 input_sync(tpacpi_inputdev);
8523ed6f
HMH		 1175
1176 mutex_unlock(&tpacpi_inputdev_send_mutex);
6a38abbf
HMH		 1177 }
1178}
1179
5c29d58f
HMH		 1180static void tpacpi_input_send_radiosw(void)
1181{
1182 int wlsw;
1183
8523ed6f
HMH		 1184 mutex_lock(&tpacpi_inputdev_send_mutex);
1185
f4e1e43c 1186 if (tp_features.hotkey_wlsw && !hotkey_get_wlsw(&wlsw)) {
5c29d58f
HMH		 1187 input_report_switch(tpacpi_inputdev,
1188 SW_RADIO, !!wlsw);
f4e1e43c
HMH		 1189 input_sync(tpacpi_inputdev);
1190 }
8523ed6f
HMH		 1191
1192 mutex_unlock(&tpacpi_inputdev_send_mutex);
5c29d58f
HMH		 1193}
1194
56b6aeb0
HMH		 1195static void hotkey_notify(struct ibm_struct *ibm, u32 event)
1196{
6a38abbf
HMH		 1197 u32 hkey;
1198 unsigned int keycode, scancode;
ff80f137 1199 int send_acpi_ev = 0;
56b6aeb0 1200
ae92bd17 1201 if (event == 0x80 && acpi_evalf(hkey_handle, &hkey, "MHKP", "d")) {
ff80f137
HMH		 1202 switch (hkey >> 12) {
1203 case 1:
1204 /* 0x1000-0x1FFF: key presses */
1205 scancode = hkey & 0xfff;
1206 if (scancode > 0 && scancode < 0x21) {
1207 scancode--;
1208 keycode = hotkey_keycode_map[scancode];
1209 tpacpi_input_send_key(scancode, keycode);
1210 } else {
1211 printk(IBM_ERR
1212 "hotkey 0x%04x out of range for keyboard map\n",
1213 hkey);
1214 send_acpi_ev = 1;
1215 }
1216 break;
1217 case 5:
1218 /* 0x5000-0x5FFF: LID */
1219 /* we don't handle it through this path, just
1220 * eat up known LID events */
1221 if (hkey != 0x5001 && hkey != 0x5002) {
1222 printk(IBM_ERR
1223 "unknown LID-related hotkey event: 0x%04x\n",
1224 hkey);
1225 send_acpi_ev = 1;
1226 }
1227 break;
1228 case 7:
1229 /* 0x7000-0x7FFF: misc */
1230 if (tp_features.hotkey_wlsw && hkey == 0x7000) {
1231 tpacpi_input_send_radiosw();
6a38abbf 1232 break;
6a38abbf 1233 }
ff80f137
HMH		 1234 /* fallthrough to default */
1235 default:
1236 /* case 2: dock-related */
1237 /* 0x2305 - T43 waking up due to bay lever eject while aslept */
1238 /* case 3: ultra-bay related. maybe bay in dock? */
1239 /* 0x3003 - T43 after wake up by bay lever eject (0x2305) */
1240 printk(IBM_NOTICE "unhandled HKEY event 0x%04x\n", hkey);
1241 send_acpi_ev = 1;
6a38abbf 1242 }
ae92bd17
HMH		 1243 } else {
1244 printk(IBM_ERR "unknown hotkey notification event %d\n", event);
ff80f137
HMH		 1245 hkey = 0;
1246 send_acpi_ev = 1;
1247 }
1248
1249 /* Legacy events */
1250 if (send_acpi_ev || hotkey_report_mode < 2)
1251 acpi_bus_generate_proc_event(ibm->acpi->device, event, hkey);
1252
1253 /* netlink events */
1254 if (send_acpi_ev) {
1255 acpi_bus_generate_netlink_event(ibm->acpi->device->pnp.device_class,
1256 ibm->acpi->device->dev.bus_id,
1257 event, hkey);
56b6aeb0
HMH		 1258 }
1259}
1260
5c29d58f
HMH		 1261static void hotkey_resume(void)
1262{
1263 tpacpi_input_send_radiosw();
1264}
1265
40ca9fdf
HMH		 1266/*
1267 * Call with hotkey_mutex held
1268 */
ae92bd17 1269static int hotkey_get(int *status, u32 *mask)
1da177e4
LT		 1270{
1271 if (!acpi_evalf(hkey_handle, status, "DHKC", "d"))
b86c4722 1272 return -EIO;
78f81cc4 1273
d8fd94d9 1274 if (tp_features.hotkey_mask)
78f81cc4 1275 if (!acpi_evalf(hkey_handle, mask, "DHKN", "d"))
b86c4722 1276 return -EIO;
78f81cc4 1277
b86c4722 1278 return 0;
1da177e4
LT		 1279}
1280
40ca9fdf
HMH		 1281/*
1282 * Call with hotkey_mutex held
1283 */
ae92bd17 1284static int hotkey_set(int status, u32 mask)
1da177e4
LT		 1285{
1286 int i;
1287
1288 if (!acpi_evalf(hkey_handle, NULL, "MHKC", "vd", status))
b86c4722 1289 return -EIO;
1da177e4 1290
d8fd94d9 1291 if (tp_features.hotkey_mask)
78f81cc4
BD		 1292 for (i = 0; i < 32; i++) {
1293 int bit = ((1 << i) & mask) != 0;
1294 if (!acpi_evalf(hkey_handle,
1295 NULL, "MHKM", "vdd", i + 1, bit))
b86c4722 1296 return -EIO;
78f81cc4 1297 }
1da177e4 1298
b86c4722 1299 return 0;
1da177e4
LT		 1300}
1301
a0416420 1302/* procfs -------------------------------------------------------------- */
78f81cc4 1303static int hotkey_read(char *p)
1da177e4 1304{
ae92bd17
HMH		 1305 int res, status;
1306 u32 mask;
1da177e4
LT		 1307 int len = 0;
1308
d8fd94d9 1309 if (!tp_features.hotkey) {
78f81cc4
BD		 1310 len += sprintf(p + len, "status:\t\tnot supported\n");
1311 return len;
1312 }
1313
40ca9fdf
HMH		 1314 res = mutex_lock_interruptible(&hotkey_mutex);
1315 if (res < 0)
1316 return res;
b86c4722 1317 res = hotkey_get(&status, &mask);
40ca9fdf 1318 mutex_unlock(&hotkey_mutex);
b86c4722
HMH		 1319 if (res)
1320 return res;
1da177e4
LT		 1321
1322 len += sprintf(p + len, "status:\t\t%s\n", enabled(status, 0));
d8fd94d9 1323 if (tp_features.hotkey_mask) {
ae92bd17 1324 len += sprintf(p + len, "mask:\t\t0x%08x\n", mask);
1da177e4
LT		 1325 len += sprintf(p + len,
1326 "commands:\tenable, disable, reset, <mask>\n");
1327 } else {
1328 len += sprintf(p + len, "mask:\t\tnot supported\n");
1329 len += sprintf(p + len, "commands:\tenable, disable, reset\n");
1330 }
1331
1332 return len;
1333}
1334
78f81cc4 1335static int hotkey_write(char *buf)
1da177e4 1336{
ae92bd17
HMH		 1337 int res, status;
1338 u32 mask;
1da177e4
LT		 1339 char *cmd;
1340 int do_cmd = 0;
1341
d8fd94d9 1342 if (!tp_features.hotkey)
1da177e4
LT		 1343 return -ENODEV;
1344
40ca9fdf
HMH		 1345 res = mutex_lock_interruptible(&hotkey_mutex);
1346 if (res < 0)
1347 return res;
1348
b86c4722
HMH		 1349 res = hotkey_get(&status, &mask);
1350 if (res)
40ca9fdf 1351 goto errexit;
78f81cc4 1352
40ca9fdf 1353 res = 0;
1da177e4
LT		 1354 while ((cmd = next_cmd(&buf))) {
1355 if (strlencmp(cmd, "enable") == 0) {
1356 status = 1;
1357 } else if (strlencmp(cmd, "disable") == 0) {
1358 status = 0;
1359 } else if (strlencmp(cmd, "reset") == 0) {
78f81cc4
BD		 1360 status = hotkey_orig_status;
1361 mask = hotkey_orig_mask;
1da177e4
LT		 1362 } else if (sscanf(cmd, "0x%x", &mask) == 1) {
1363 /* mask set */
1364 } else if (sscanf(cmd, "%x", &mask) == 1) {
1365 /* mask set */
40ca9fdf
HMH		 1366 } else {
1367 res = -EINVAL;
1368 goto errexit;
1369 }
1da177e4
LT		 1370 do_cmd = 1;
1371 }
1372
40ca9fdf 1373 if (do_cmd)
b86c4722 1374 res = hotkey_set(status, mask);
1da177e4 1375
40ca9fdf
HMH		 1376errexit:
1377 mutex_unlock(&hotkey_mutex);
1378 return res;
78f81cc4 1379}
1da177e4 1380
1ba90e3a
TR		 1381static const struct acpi_device_id ibm_htk_device_ids[] = {
1382 {IBM_HKEY_HID, 0},
1383 {"", 0},
1384};
1385
8d376cd6 1386static struct tp_acpi_drv_struct ibm_hotkey_acpidriver = {
1ba90e3a 1387 .hid = ibm_htk_device_ids,
8d376cd6
HMH		 1388 .notify = hotkey_notify,
1389 .handle = &hkey_handle,
1390 .type = ACPI_DEVICE_NOTIFY,
1391};
1392
a5763f22
HMH		 1393static struct ibm_struct hotkey_driver_data = {
1394 .name = "hotkey",
a5763f22
HMH		 1395 .read = hotkey_read,
1396 .write = hotkey_write,
1397 .exit = hotkey_exit,
5c29d58f 1398 .resume = hotkey_resume,
8d376cd6 1399 .acpi = &ibm_hotkey_acpidriver,
a5763f22
HMH		 1400};
1401
56b6aeb0
HMH		 1402/*************************************************************************
1403 * Bluetooth subdriver
1404 */
1da177e4 1405
d3a6ade4
HMH		 1406/* sysfs bluetooth enable ---------------------------------------------- */
1407static ssize_t bluetooth_enable_show(struct device *dev,
1408 struct device_attribute *attr,
1409 char *buf)
1410{
1411 int status;
1412
1413 status = bluetooth_get_radiosw();
1414 if (status < 0)
1415 return status;
1416
1417 return snprintf(buf, PAGE_SIZE, "%d\n", status ? 1 : 0);
1418}
1419
1420static ssize_t bluetooth_enable_store(struct device *dev,
1421 struct device_attribute *attr,
1422 const char *buf, size_t count)
1423{
1424 unsigned long t;
1425 int res;
1426
1427 if (parse_strtoul(buf, 1, &t))
1428 return -EINVAL;
1429
1430 res = bluetooth_set_radiosw(t);
1431
1432 return (res) ? res : count;
1433}
1434
1435static struct device_attribute dev_attr_bluetooth_enable =
cc4c24e1 1436 __ATTR(bluetooth_enable, S_IWUSR | S_IRUGO,
d3a6ade4
HMH		 1437 bluetooth_enable_show, bluetooth_enable_store);
1438
1439/* --------------------------------------------------------------------- */
1440
1441static struct attribute *bluetooth_attributes[] = {
1442 &dev_attr_bluetooth_enable.attr,
1443 NULL
1444};
1445
1446static const struct attribute_group bluetooth_attr_group = {
d3a6ade4
HMH		 1447 .attrs = bluetooth_attributes,
1448};
1449
a5763f22 1450static int __init bluetooth_init(struct ibm_init_struct *iibm)
1da177e4 1451{
d3a6ade4 1452 int res;
d6fdd1e9
HMH		 1453 int status = 0;
1454
fe08bc4b
HMH		 1455 vdbg_printk(TPACPI_DBG_INIT, "initializing bluetooth subdriver\n");
1456
8d376cd6 1457 IBM_ACPIHANDLE_INIT(hkey);
5fba344c 1458
78f81cc4
BD		 1459 /* bluetooth not supported on 570, 600e/x, 770e, 770x, A21e, A2xm/p,
1460 G4x, R30, R31, R40e, R50e, T20-22, X20-21 */
d8fd94d9 1461 tp_features.bluetooth = hkey_handle &&
d6fdd1e9
HMH		 1462 acpi_evalf(hkey_handle, &status, "GBDC", "qd");
1463
1464 vdbg_printk(TPACPI_DBG_INIT, "bluetooth is %s, status 0x%02x\n",
1465 str_supported(tp_features.bluetooth),
1466 status);
1467
d3a6ade4
HMH		 1468 if (tp_features.bluetooth) {
1469 if (!(status & TP_ACPI_BLUETOOTH_HWPRESENT)) {
1470 /* no bluetooth hardware present in system */
1471 tp_features.bluetooth = 0;
1472 dbg_printk(TPACPI_DBG_INIT,
1473 "bluetooth hardware not installed\n");
1474 } else {
1475 res = sysfs_create_group(&tpacpi_pdev->dev.kobj,
1476 &bluetooth_attr_group);
1477 if (res)
1478 return res;
1479 }
d6fdd1e9 1480 }
fe08bc4b 1481
d8fd94d9 1482 return (tp_features.bluetooth)? 0 : 1;
1da177e4
LT		 1483}
1484
d3a6ade4
HMH		 1485static void bluetooth_exit(void)
1486{
1487 sysfs_remove_group(&tpacpi_pdev->dev.kobj,
1488 &bluetooth_attr_group);
1489}
1490
d6fdd1e9 1491static int bluetooth_get_radiosw(void)
1da177e4
LT		 1492{
1493 int status;
1494
d6fdd1e9
HMH		 1495 if (!tp_features.bluetooth)
1496 return -ENODEV;
1da177e4 1497
d6fdd1e9
HMH		 1498 if (!acpi_evalf(hkey_handle, &status, "GBDC", "d"))
1499 return -EIO;
1500
1501 return ((status & TP_ACPI_BLUETOOTH_RADIOSSW) != 0);
1502}
1503
1504static int bluetooth_set_radiosw(int radio_on)
1505{
1506 int status;
1507
1508 if (!tp_features.bluetooth)
1509 return -ENODEV;
1510
1511 if (!acpi_evalf(hkey_handle, &status, "GBDC", "d"))
1512 return -EIO;
1513 if (radio_on)
1514 status |= TP_ACPI_BLUETOOTH_RADIOSSW;
1515 else
1516 status &= ~TP_ACPI_BLUETOOTH_RADIOSSW;
1517 if (!acpi_evalf(hkey_handle, NULL, "SBDC", "vd", status))
1518 return -EIO;
1519
1520 return 0;
1da177e4
LT		 1521}
1522
d3a6ade4 1523/* procfs -------------------------------------------------------------- */
78f81cc4 1524static int bluetooth_read(char *p)
1da177e4
LT		 1525{
1526 int len = 0;
d6fdd1e9 1527 int status = bluetooth_get_radiosw();
1da177e4 1528
d8fd94d9 1529 if (!tp_features.bluetooth)
1da177e4 1530 len += sprintf(p + len, "status:\t\tnot supported\n");
1da177e4 1531 else {
d6fdd1e9
HMH		 1532 len += sprintf(p + len, "status:\t\t%s\n",
1533 (status)? "enabled" : "disabled");
1da177e4
LT		 1534 len += sprintf(p + len, "commands:\tenable, disable\n");
1535 }
1536
1537 return len;
1538}
1539
78f81cc4 1540static int bluetooth_write(char *buf)
1da177e4 1541{
1da177e4 1542 char *cmd;
1da177e4 1543
d8fd94d9 1544 if (!tp_features.bluetooth)
78f81cc4 1545 return -ENODEV;
1da177e4
LT		 1546
1547 while ((cmd = next_cmd(&buf))) {
1548 if (strlencmp(cmd, "enable") == 0) {
d6fdd1e9 1549 bluetooth_set_radiosw(1);
1da177e4 1550 } else if (strlencmp(cmd, "disable") == 0) {
d6fdd1e9 1551 bluetooth_set_radiosw(0);
1da177e4
LT		 1552 } else
1553 return -EINVAL;
1da177e4
LT		 1554 }
1555
1da177e4
LT		 1556 return 0;
1557}
1558
a5763f22
HMH		 1559static struct ibm_struct bluetooth_driver_data = {
1560 .name = "bluetooth",
1561 .read = bluetooth_read,
1562 .write = bluetooth_write,
d3a6ade4 1563 .exit = bluetooth_exit,
a5763f22
HMH		 1564};
1565
56b6aeb0
HMH		 1566/*************************************************************************
1567 * Wan subdriver
1568 */
1569
d3a6ade4
HMH		 1570/* sysfs wan enable ---------------------------------------------------- */
1571static ssize_t wan_enable_show(struct device *dev,
1572 struct device_attribute *attr,
1573 char *buf)
1574{
1575 int status;
1576
1577 status = wan_get_radiosw();
1578 if (status < 0)
1579 return status;
1580
1581 return snprintf(buf, PAGE_SIZE, "%d\n", status ? 1 : 0);
1582}
1583
1584static ssize_t wan_enable_store(struct device *dev,
1585 struct device_attribute *attr,
1586 const char *buf, size_t count)
1587{
1588 unsigned long t;
1589 int res;
1590
1591 if (parse_strtoul(buf, 1, &t))
1592 return -EINVAL;
1593
1594 res = wan_set_radiosw(t);
1595
1596 return (res) ? res : count;
1597}
1598
1599static struct device_attribute dev_attr_wan_enable =
cc4c24e1 1600 __ATTR(wwan_enable, S_IWUSR | S_IRUGO,
d3a6ade4
HMH		 1601 wan_enable_show, wan_enable_store);
1602
1603/* --------------------------------------------------------------------- */
1604
1605static struct attribute *wan_attributes[] = {
1606 &dev_attr_wan_enable.attr,
1607 NULL
1608};
1609
1610static const struct attribute_group wan_attr_group = {
d3a6ade4
HMH		 1611 .attrs = wan_attributes,
1612};
1613
a5763f22 1614static int __init wan_init(struct ibm_init_struct *iibm)
42adb53c 1615{
d3a6ade4 1616 int res;
d6fdd1e9
HMH		 1617 int status = 0;
1618
fe08bc4b
HMH		 1619 vdbg_printk(TPACPI_DBG_INIT, "initializing wan subdriver\n");
1620
8d376cd6 1621 IBM_ACPIHANDLE_INIT(hkey);
5fba344c 1622
d8fd94d9 1623 tp_features.wan = hkey_handle &&
d6fdd1e9
HMH		 1624 acpi_evalf(hkey_handle, &status, "GWAN", "qd");
1625
1626 vdbg_printk(TPACPI_DBG_INIT, "wan is %s, status 0x%02x\n",
1627 str_supported(tp_features.wan),
1628 status);
1629
d3a6ade4
HMH		 1630 if (tp_features.wan) {
1631 if (!(status & TP_ACPI_WANCARD_HWPRESENT)) {
1632 /* no wan hardware present in system */
1633 tp_features.wan = 0;
1634 dbg_printk(TPACPI_DBG_INIT,
1635 "wan hardware not installed\n");
1636 } else {
1637 res = sysfs_create_group(&tpacpi_pdev->dev.kobj,
1638 &wan_attr_group);
1639 if (res)
1640 return res;
1641 }
d6fdd1e9 1642 }
fe08bc4b 1643
d8fd94d9 1644 return (tp_features.wan)? 0 : 1;
42adb53c
JF		 1645}
1646
d3a6ade4
HMH		 1647static void wan_exit(void)
1648{
1649 sysfs_remove_group(&tpacpi_pdev->dev.kobj,
1650 &wan_attr_group);
1651}
1652
d6fdd1e9 1653static int wan_get_radiosw(void)
42adb53c
JF		 1654{
1655 int status;
1656
d6fdd1e9
HMH		 1657 if (!tp_features.wan)
1658 return -ENODEV;
42adb53c 1659
d6fdd1e9
HMH		 1660 if (!acpi_evalf(hkey_handle, &status, "GWAN", "d"))
1661 return -EIO;
1662
1663 return ((status & TP_ACPI_WANCARD_RADIOSSW) != 0);
1664}
1665
1666static int wan_set_radiosw(int radio_on)
1667{
1668 int status;
1669
1670 if (!tp_features.wan)
1671 return -ENODEV;
1672
1673 if (!acpi_evalf(hkey_handle, &status, "GWAN", "d"))
1674 return -EIO;
1675 if (radio_on)
1676 status |= TP_ACPI_WANCARD_RADIOSSW;
1677 else
1678 status &= ~TP_ACPI_WANCARD_RADIOSSW;
1679 if (!acpi_evalf(hkey_handle, NULL, "SWAN", "vd", status))
1680 return -EIO;
1681
1682 return 0;
42adb53c
JF		 1683}
1684
d3a6ade4 1685/* procfs -------------------------------------------------------------- */
42adb53c
JF		 1686static int wan_read(char *p)
1687{
1688 int len = 0;
d6fdd1e9 1689 int status = wan_get_radiosw();
42adb53c 1690
d8fd94d9 1691 if (!tp_features.wan)
42adb53c 1692 len += sprintf(p + len, "status:\t\tnot supported\n");
42adb53c 1693 else {
d6fdd1e9
HMH		 1694 len += sprintf(p + len, "status:\t\t%s\n",
1695 (status)? "enabled" : "disabled");
42adb53c
JF		 1696 len += sprintf(p + len, "commands:\tenable, disable\n");
1697 }
1698
1699 return len;
1700}
1701
1702static int wan_write(char *buf)
1703{
42adb53c 1704 char *cmd;
42adb53c 1705
d8fd94d9 1706 if (!tp_features.wan)
42adb53c
JF		 1707 return -ENODEV;
1708
1709 while ((cmd = next_cmd(&buf))) {
1710 if (strlencmp(cmd, "enable") == 0) {
d6fdd1e9 1711 wan_set_radiosw(1);
42adb53c 1712 } else if (strlencmp(cmd, "disable") == 0) {
d6fdd1e9 1713 wan_set_radiosw(0);
42adb53c
JF		 1714 } else
1715 return -EINVAL;
42adb53c
JF		 1716 }
1717
42adb53c
JF		 1718 return 0;
1719}
1720
a5763f22
HMH		 1721static struct ibm_struct wan_driver_data = {
1722 .name = "wan",
1723 .read = wan_read,
1724 .write = wan_write,
d3a6ade4 1725 .exit = wan_exit,
92641177 1726 .flags.experimental = 1,
a5763f22
HMH		 1727};
1728
56b6aeb0
HMH		 1729/*************************************************************************
1730 * Video subdriver
1731 */
1732
9a8e1738
HMH		 1733static enum video_access_mode video_supported;
1734static int video_orig_autosw;
78f81cc4 1735
56b6aeb0
HMH		 1736IBM_HANDLE(vid, root, "\\_SB.PCI.AGP.VGA", /* 570 */
1737 "\\_SB.PCI0.AGP0.VID0", /* 600e/x, 770x */
1738 "\\_SB.PCI0.VID0", /* 770e */
1739 "\\_SB.PCI0.VID", /* A21e, G4x, R50e, X30, X40 */
1740 "\\_SB.PCI0.AGP.VID", /* all others */
1741 ); /* R30, R31 */
1742
1743IBM_HANDLE(vid2, root, "\\_SB.PCI0.AGPB.VID"); /* G41 */
1744
a5763f22 1745static int __init video_init(struct ibm_init_struct *iibm)
1da177e4 1746{
78f81cc4
BD		 1747 int ivga;
1748
fe08bc4b
HMH		 1749 vdbg_printk(TPACPI_DBG_INIT, "initializing video subdriver\n");
1750
8d376cd6
HMH		 1751 IBM_ACPIHANDLE_INIT(vid);
1752 IBM_ACPIHANDLE_INIT(vid2);
5fba344c 1753
78f81cc4
BD		 1754 if (vid2_handle && acpi_evalf(NULL, &ivga, "\\IVGA", "d") && ivga)
1755 /* G41, assume IVGA doesn't change */
1756 vid_handle = vid2_handle;
1757
1758 if (!vid_handle)
1759 /* video switching not supported on R30, R31 */
efa27145 1760 video_supported = TPACPI_VIDEO_NONE;
78f81cc4
BD		 1761 else if (acpi_evalf(vid_handle, &video_orig_autosw, "SWIT", "qd"))
1762 /* 570 */
efa27145 1763 video_supported = TPACPI_VIDEO_570;
78f81cc4
BD		 1764 else if (acpi_evalf(vid_handle, &video_orig_autosw, "^VADL", "qd"))
1765 /* 600e/x, 770e, 770x */
efa27145 1766 video_supported = TPACPI_VIDEO_770;
78f81cc4
BD		 1767 else
1768 /* all others */
efa27145 1769 video_supported = TPACPI_VIDEO_NEW;
1da177e4 1770
fe08bc4b
HMH		 1771 vdbg_printk(TPACPI_DBG_INIT, "video is %s, mode %d\n",
1772 str_supported(video_supported != TPACPI_VIDEO_NONE),
1773 video_supported);
1774
5fba344c 1775 return (video_supported != TPACPI_VIDEO_NONE)? 0 : 1;
1da177e4
LT		 1776}
1777
56b6aeb0
HMH		 1778static void video_exit(void)
1779{
83f34724
HMH		 1780 dbg_printk(TPACPI_DBG_EXIT,
1781 "restoring original video autoswitch mode\n");
1782 if (video_autosw_set(video_orig_autosw))
1783 printk(IBM_ERR "error while trying to restore original "
1784 "video autoswitch mode\n");
56b6aeb0
HMH		 1785}
1786
83f34724 1787static int video_outputsw_get(void)
1da177e4
LT		 1788{
1789 int status = 0;
1790 int i;
1791
83f34724
HMH		 1792 switch (video_supported) {
1793 case TPACPI_VIDEO_570:
1794 if (!acpi_evalf(NULL, &i, "\\_SB.PHS", "dd",
1795 TP_ACPI_VIDEO_570_PHSCMD))
1796 return -EIO;
1797 status = i & TP_ACPI_VIDEO_570_PHSMASK;
1798 break;
1799 case TPACPI_VIDEO_770:
1800 if (!acpi_evalf(NULL, &i, "\\VCDL", "d"))
1801 return -EIO;
1802 if (i)
1803 status |= TP_ACPI_VIDEO_S_LCD;
1804 if (!acpi_evalf(NULL, &i, "\\VCDC", "d"))
1805 return -EIO;
1806 if (i)
1807 status |= TP_ACPI_VIDEO_S_CRT;
1808 break;
1809 case TPACPI_VIDEO_NEW:
1810 if (!acpi_evalf(NULL, NULL, "\\VUPS", "vd", 1) ||
1811 !acpi_evalf(NULL, &i, "\\VCDC", "d"))
1812 return -EIO;
1813 if (i)
1814 status |= TP_ACPI_VIDEO_S_CRT;
1815
1816 if (!acpi_evalf(NULL, NULL, "\\VUPS", "vd", 0) ||
1817 !acpi_evalf(NULL, &i, "\\VCDL", "d"))
1818 return -EIO;
1819 if (i)
1820 status |= TP_ACPI_VIDEO_S_LCD;
1821 if (!acpi_evalf(NULL, &i, "\\VCDD", "d"))
1822 return -EIO;
1823 if (i)
1824 status |= TP_ACPI_VIDEO_S_DVI;
1825 break;
1826 default:
1827 return -ENOSYS;
78f81cc4
BD		 1828 }
1829
1830 return status;
1831}
1da177e4 1832
83f34724 1833static int video_outputsw_set(int status)
78f81cc4 1834{
83f34724
HMH		 1835 int autosw;
1836 int res = 0;
1837
1838 switch (video_supported) {
1839 case TPACPI_VIDEO_570:
1840 res = acpi_evalf(NULL, NULL,
1841 "\\_SB.PHS2", "vdd",
1842 TP_ACPI_VIDEO_570_PHS2CMD,
1843 status | TP_ACPI_VIDEO_570_PHS2SET);
1844 break;
1845 case TPACPI_VIDEO_770:
1846 autosw = video_autosw_get();
1847 if (autosw < 0)
1848 return autosw;
1da177e4 1849
83f34724
HMH		 1850 res = video_autosw_set(1);
1851 if (res)
1852 return res;
1853 res = acpi_evalf(vid_handle, NULL,
1854 "ASWT", "vdd", status * 0x100, 0);
1855 if (!autosw && video_autosw_set(autosw)) {
1856 printk(IBM_ERR "video auto-switch left enabled due to error\n");
1857 return -EIO;
1858 }
1859 break;
1860 case TPACPI_VIDEO_NEW:
1861 res = acpi_evalf(NULL, NULL, "\\VUPS", "vd", 0x80) &&
1862 acpi_evalf(NULL, NULL, "\\VSDS", "vdd", status, 1);
1863 break;
1864 default:
1865 return -ENOSYS;
1866 }
1da177e4 1867
83f34724 1868 return (res)? 0 : -EIO;
1da177e4
LT		 1869}
1870
83f34724 1871static int video_autosw_get(void)
78f81cc4 1872{
83f34724 1873 int autosw = 0;
78f81cc4 1874
83f34724
HMH		 1875 switch (video_supported) {
1876 case TPACPI_VIDEO_570:
1877 if (!acpi_evalf(vid_handle, &autosw, "SWIT", "d"))
1878 return -EIO;
1879 break;
1880 case TPACPI_VIDEO_770:
1881 case TPACPI_VIDEO_NEW:
1882 if (!acpi_evalf(vid_handle, &autosw, "^VDEE", "d"))
1883 return -EIO;
1884 break;
1885 default:
1886 return -ENOSYS;
1887 }
78f81cc4 1888
83f34724 1889 return autosw & 1;
78f81cc4
BD		 1890}
1891
83f34724 1892static int video_autosw_set(int enable)
78f81cc4 1893{
83f34724
HMH		 1894 if (!acpi_evalf(vid_handle, NULL, "_DOS", "vd", (enable)? 1 : 0))
1895 return -EIO;
1896 return 0;
78f81cc4
BD		 1897}
1898
83f34724 1899static int video_outputsw_cycle(void)
78f81cc4 1900{
83f34724
HMH		 1901 int autosw = video_autosw_get();
1902 int res;
78f81cc4 1903
83f34724
HMH		 1904 if (autosw < 0)
1905 return autosw;
78f81cc4 1906
83f34724
HMH		 1907 switch (video_supported) {
1908 case TPACPI_VIDEO_570:
1909 res = video_autosw_set(1);
1910 if (res)
1911 return res;
1912 res = acpi_evalf(ec_handle, NULL, "_Q16", "v");
1913 break;
1914 case TPACPI_VIDEO_770:
1915 case TPACPI_VIDEO_NEW:
1916 res = video_autosw_set(1);
1917 if (res)
1918 return res;
1919 res = acpi_evalf(vid_handle, NULL, "VSWT", "v");
1920 break;
1921 default:
1922 return -ENOSYS;
1923 }
1924 if (!autosw && video_autosw_set(autosw)) {
1925 printk(IBM_ERR "video auto-switch left enabled due to error\n");
1926 return -EIO;
78f81cc4
BD		 1927 }
1928
83f34724
HMH		 1929 return (res)? 0 : -EIO;
1930}
1931
1932static int video_expand_toggle(void)
1933{
1934 switch (video_supported) {
1935 case TPACPI_VIDEO_570:
1936 return acpi_evalf(ec_handle, NULL, "_Q17", "v")?
1937 0 : -EIO;
1938 case TPACPI_VIDEO_770:
1939 return acpi_evalf(vid_handle, NULL, "VEXP", "v")?
1940 0 : -EIO;
1941 case TPACPI_VIDEO_NEW:
1942 return acpi_evalf(NULL, NULL, "\\VEXP", "v")?
1943 0 : -EIO;
1944 default:
1945 return -ENOSYS;
1946 }
1947 /* not reached */
78f81cc4
BD		 1948}
1949
56b6aeb0
HMH		 1950static int video_read(char *p)
1951{
83f34724 1952 int status, autosw;
56b6aeb0
HMH		 1953 int len = 0;
1954
83f34724 1955 if (video_supported == TPACPI_VIDEO_NONE) {
56b6aeb0
HMH		 1956 len += sprintf(p + len, "status:\t\tnot supported\n");
1957 return len;
1958 }
1959
83f34724
HMH		 1960 status = video_outputsw_get();
1961 if (status < 0)
1962 return status;
1963
1964 autosw = video_autosw_get();
1965 if (autosw < 0)
1966 return autosw;
1967
56b6aeb0
HMH		 1968 len += sprintf(p + len, "status:\t\tsupported\n");
1969 len += sprintf(p + len, "lcd:\t\t%s\n", enabled(status, 0));
1970 len += sprintf(p + len, "crt:\t\t%s\n", enabled(status, 1));
efa27145 1971 if (video_supported == TPACPI_VIDEO_NEW)
56b6aeb0
HMH		 1972 len += sprintf(p + len, "dvi:\t\t%s\n", enabled(status, 3));
1973 len += sprintf(p + len, "auto:\t\t%s\n", enabled(autosw, 0));
1974 len += sprintf(p + len, "commands:\tlcd_enable, lcd_disable\n");
1975 len += sprintf(p + len, "commands:\tcrt_enable, crt_disable\n");
efa27145 1976 if (video_supported == TPACPI_VIDEO_NEW)
56b6aeb0
HMH		 1977 len += sprintf(p + len, "commands:\tdvi_enable, dvi_disable\n");
1978 len += sprintf(p + len, "commands:\tauto_enable, auto_disable\n");
1979 len += sprintf(p + len, "commands:\tvideo_switch, expand_toggle\n");
1980
1981 return len;
1982}
1983
78f81cc4 1984static int video_write(char *buf)
1da177e4
LT		 1985{
1986 char *cmd;
1987 int enable, disable, status;
83f34724 1988 int res;
1da177e4 1989
83f34724 1990 if (video_supported == TPACPI_VIDEO_NONE)
78f81cc4
BD		 1991 return -ENODEV;
1992
83f34724
HMH		 1993 enable = 0;
1994 disable = 0;
1da177e4
LT		 1995
1996 while ((cmd = next_cmd(&buf))) {
1997 if (strlencmp(cmd, "lcd_enable") == 0) {
83f34724 1998 enable |= TP_ACPI_VIDEO_S_LCD;
1da177e4 1999 } else if (strlencmp(cmd, "lcd_disable") == 0) {
83f34724 2000 disable |= TP_ACPI_VIDEO_S_LCD;
1da177e4 2001 } else if (strlencmp(cmd, "crt_enable") == 0) {
83f34724 2002 enable |= TP_ACPI_VIDEO_S_CRT;
1da177e4 2003 } else if (strlencmp(cmd, "crt_disable") == 0) {
83f34724 2004 disable |= TP_ACPI_VIDEO_S_CRT;
efa27145 2005 } else if (video_supported == TPACPI_VIDEO_NEW &&
78f81cc4 2006 strlencmp(cmd, "dvi_enable") == 0) {
83f34724 2007 enable |= TP_ACPI_VIDEO_S_DVI;
efa27145 2008 } else if (video_supported == TPACPI_VIDEO_NEW &&
78f81cc4 2009 strlencmp(cmd, "dvi_disable") == 0) {
83f34724 2010 disable |= TP_ACPI_VIDEO_S_DVI;
1da177e4 2011 } else if (strlencmp(cmd, "auto_enable") == 0) {
83f34724
HMH		 2012 res = video_autosw_set(1);
2013 if (res)
2014 return res;
1da177e4 2015 } else if (strlencmp(cmd, "auto_disable") == 0) {
83f34724
HMH		 2016 res = video_autosw_set(0);
2017 if (res)
2018 return res;
1da177e4 2019 } else if (strlencmp(cmd, "video_switch") == 0) {
83f34724
HMH		 2020 res = video_outputsw_cycle();
2021 if (res)
2022 return res;
1da177e4 2023 } else if (strlencmp(cmd, "expand_toggle") == 0) {
83f34724
HMH		 2024 res = video_expand_toggle();
2025 if (res)
2026 return res;
1da177e4
LT		 2027 } else
2028 return -EINVAL;
2029 }
2030
2031 if (enable || disable) {
83f34724
HMH		 2032 status = video_outputsw_get();
2033 if (status < 0)
2034 return status;
2035 res = video_outputsw_set((status & ~disable) | enable);
2036 if (res)
2037 return res;
1da177e4
LT		 2038 }
2039
2040 return 0;
2041}
2042
a5763f22
HMH		 2043static struct ibm_struct video_driver_data = {
2044 .name = "video",
2045 .read = video_read,
2046 .write = video_write,
2047 .exit = video_exit,
2048};
2049
56b6aeb0
HMH		 2050/*************************************************************************
2051 * Light (thinklight) subdriver
2052 */
1da177e4 2053
56b6aeb0
HMH		 2054IBM_HANDLE(lght, root, "\\LGHT"); /* A21e, A2xm/p, T20-22, X20-21 */
2055IBM_HANDLE(ledb, ec, "LEDB"); /* G4x */
2056
a5763f22 2057static int __init light_init(struct ibm_init_struct *iibm)
1da177e4 2058{
fe08bc4b
HMH		 2059 vdbg_printk(TPACPI_DBG_INIT, "initializing light subdriver\n");
2060
8d376cd6
HMH		 2061 IBM_ACPIHANDLE_INIT(ledb);
2062 IBM_ACPIHANDLE_INIT(lght);
2063 IBM_ACPIHANDLE_INIT(cmos);
5fba344c 2064
78f81cc4 2065 /* light not supported on 570, 600e/x, 770e, 770x, G4x, R30, R31 */
d8fd94d9 2066 tp_features.light = (cmos_handle || lght_handle) && !ledb_handle;
78f81cc4 2067
d8fd94d9 2068 if (tp_features.light)
78f81cc4
BD		 2069 /* light status not supported on
2070 570, 600e/x, 770e, 770x, G4x, R30, R31, R32, X20 */
d8fd94d9
HMH		 2071 tp_features.light_status =
2072 acpi_evalf(ec_handle, NULL, "KBLT", "qv");
1da177e4 2073
fe08bc4b 2074 vdbg_printk(TPACPI_DBG_INIT, "light is %s\n",
d8fd94d9 2075 str_supported(tp_features.light));
fe08bc4b 2076
d8fd94d9 2077 return (tp_features.light)? 0 : 1;
1da177e4
LT		 2078}
2079
78f81cc4 2080static int light_read(char *p)
1da177e4
LT		 2081{
2082 int len = 0;
2083 int status = 0;
2084
d8fd94d9 2085 if (!tp_features.light) {
78f81cc4 2086 len += sprintf(p + len, "status:\t\tnot supported\n");
d8fd94d9 2087 } else if (!tp_features.light_status) {
78f81cc4
BD		 2088 len += sprintf(p + len, "status:\t\tunknown\n");
2089 len += sprintf(p + len, "commands:\ton, off\n");
2090 } else {
1da177e4
LT		 2091 if (!acpi_evalf(ec_handle, &status, "KBLT", "d"))
2092 return -EIO;
2093 len += sprintf(p + len, "status:\t\t%s\n", onoff(status, 0));
78f81cc4
BD		 2094 len += sprintf(p + len, "commands:\ton, off\n");
2095 }
1da177e4
LT		 2096
2097 return len;
2098}
2099
78f81cc4 2100static int light_write(char *buf)
1da177e4
LT		 2101{
2102 int cmos_cmd, lght_cmd;
2103 char *cmd;
2104 int success;
78f81cc4 2105
d8fd94d9 2106 if (!tp_features.light)
78f81cc4
BD		 2107 return -ENODEV;
2108
1da177e4
LT		 2109 while ((cmd = next_cmd(&buf))) {
2110 if (strlencmp(cmd, "on") == 0) {
2111 cmos_cmd = 0x0c;
2112 lght_cmd = 1;
2113 } else if (strlencmp(cmd, "off") == 0) {
2114 cmos_cmd = 0x0d;
2115 lght_cmd = 0;
2116 } else
2117 return -EINVAL;
78f81cc4 2118
1da177e4 2119 success = cmos_handle ?
78f81cc4
BD		 2120 acpi_evalf(cmos_handle, NULL, NULL, "vd", cmos_cmd) :
2121 acpi_evalf(lght_handle, NULL, NULL, "vd", lght_cmd);
1da177e4
LT		 2122 if (!success)
2123 return -EIO;
2124 }
2125
2126 return 0;
2127}
2128
a5763f22
HMH		 2129static struct ibm_struct light_driver_data = {
2130 .name = "light",
2131 .read = light_read,
2132 .write = light_write,
2133};
2134
56b6aeb0
HMH		 2135/*************************************************************************
2136 * Dock subdriver
2137 */
1da177e4 2138
85998248 2139#ifdef CONFIG_THINKPAD_ACPI_DOCK
56b6aeb0
HMH		 2140
2141IBM_HANDLE(dock, root, "\\_SB.GDCK", /* X30, X31, X40 */
2142 "\\_SB.PCI0.DOCK", /* 600e/x,770e,770x,A2xm/p,T20-22,X20-21 */
2143 "\\_SB.PCI0.PCI1.DOCK", /* all others */
2144 "\\_SB.PCI.ISA.SLCE", /* 570 */
2145 ); /* A21e,G4x,R30,R31,R32,R40,R40e,R50e */
2146
5fba344c
HMH		 2147/* don't list other alternatives as we install a notify handler on the 570 */
2148IBM_HANDLE(pci, root, "\\_SB.PCI"); /* 570 */
2149
1ba90e3a
TR		 2150static const struct acpi_device_id ibm_pci_device_ids[] = {
2151 {PCI_ROOT_HID_STRING, 0},
2152 {"", 0},
2153};
2154
d94a7f16
HMH		 2155static struct tp_acpi_drv_struct ibm_dock_acpidriver[2] = {
2156 {
2157 .notify = dock_notify,
2158 .handle = &dock_handle,
2159 .type = ACPI_SYSTEM_NOTIFY,
2160 },
2161 {
996fba08
HMH		 2162 /* THIS ONE MUST NEVER BE USED FOR DRIVER AUTOLOADING.
2163 * We just use it to get notifications of dock hotplug
2164 * in very old thinkpads */
1ba90e3a 2165 .hid = ibm_pci_device_ids,
d94a7f16
HMH		 2166 .notify = dock_notify,
2167 .handle = &pci_handle,
2168 .type = ACPI_SYSTEM_NOTIFY,
2169 },
2170};
2171
2172static struct ibm_struct dock_driver_data[2] = {
2173 {
2174 .name = "dock",
2175 .read = dock_read,
2176 .write = dock_write,
2177 .acpi = &ibm_dock_acpidriver[0],
2178 },
2179 {
2180 .name = "dock",
2181 .acpi = &ibm_dock_acpidriver[1],
2182 },
2183};
2184
1da177e4
LT		 2185#define dock_docked() (_sta(dock_handle) & 1)
2186
a5763f22 2187static int __init dock_init(struct ibm_init_struct *iibm)
5fba344c 2188{
fe08bc4b
HMH		 2189 vdbg_printk(TPACPI_DBG_INIT, "initializing dock subdriver\n");
2190
8d376cd6 2191 IBM_ACPIHANDLE_INIT(dock);
5fba344c 2192
fe08bc4b
HMH		 2193 vdbg_printk(TPACPI_DBG_INIT, "dock is %s\n",
2194 str_supported(dock_handle != NULL));
2195
5fba344c
HMH		 2196 return (dock_handle)? 0 : 1;
2197}
2198
d94a7f16
HMH		 2199static int __init dock_init2(struct ibm_init_struct *iibm)
2200{
2201 int dock2_needed;
2202
2203 vdbg_printk(TPACPI_DBG_INIT, "initializing dock subdriver part 2\n");
2204
2205 if (dock_driver_data[0].flags.acpi_driver_registered &&
2206 dock_driver_data[0].flags.acpi_notify_installed) {
2207 IBM_ACPIHANDLE_INIT(pci);
2208 dock2_needed = (pci_handle != NULL);
2209 vdbg_printk(TPACPI_DBG_INIT,
2210 "dock PCI handler for the TP 570 is %s\n",
2211 str_supported(dock2_needed));
2212 } else {
2213 vdbg_printk(TPACPI_DBG_INIT,
2214 "dock subdriver part 2 not required\n");
2215 dock2_needed = 0;
2216 }
2217
2218 return (dock2_needed)? 0 : 1;
2219}
2220
56b6aeb0
HMH		 2221static void dock_notify(struct ibm_struct *ibm, u32 event)
2222{
2223 int docked = dock_docked();
1ba90e3a
TR		 2224 int pci = ibm->acpi->hid && ibm->acpi->device &&
2225 acpi_match_device_ids(ibm->acpi->device, ibm_pci_device_ids);
962ce8ca 2226 int data;
56b6aeb0
HMH		 2227
2228 if (event == 1 && !pci) /* 570 */
962ce8ca 2229 data = 1; /* button */
56b6aeb0 2230 else if (event == 1 && pci) /* 570 */
962ce8ca 2231 data = 3; /* dock */
56b6aeb0 2232 else if (event == 3 && docked)
962ce8ca 2233 data = 1; /* button */
56b6aeb0 2234 else if (event == 3 && !docked)
962ce8ca 2235 data = 2; /* undock */
56b6aeb0 2236 else if (event == 0 && docked)
962ce8ca 2237 data = 3; /* dock */
56b6aeb0
HMH		 2238 else {
2239 printk(IBM_ERR "unknown dock event %d, status %d\n",
2240 event, _sta(dock_handle));
962ce8ca 2241 data = 0; /* unknown */
56b6aeb0 2242 }
14e04fb3 2243 acpi_bus_generate_proc_event(ibm->acpi->device, event, data);
962ce8ca
ZR		 2244 acpi_bus_generate_netlink_event(ibm->acpi->device->pnp.device_class,
2245 ibm->acpi->device->dev.bus_id,
2246 event, data);
56b6aeb0
HMH		 2247}
2248
78f81cc4 2249static int dock_read(char *p)
1da177e4
LT		 2250{
2251 int len = 0;
2252 int docked = dock_docked();
2253
2254 if (!dock_handle)
2255 len += sprintf(p + len, "status:\t\tnot supported\n");
2256 else if (!docked)
2257 len += sprintf(p + len, "status:\t\tundocked\n");
2258 else {
2259 len += sprintf(p + len, "status:\t\tdocked\n");
2260 len += sprintf(p + len, "commands:\tdock, undock\n");
2261 }
2262
2263 return len;
2264}
2265
78f81cc4 2266static int dock_write(char *buf)
1da177e4
LT		 2267{
2268 char *cmd;
2269
2270 if (!dock_docked())
78f81cc4 2271 return -ENODEV;
1da177e4
LT		 2272
2273 while ((cmd = next_cmd(&buf))) {
2274 if (strlencmp(cmd, "undock") == 0) {
78f81cc4
BD		 2275 if (!acpi_evalf(dock_handle, NULL, "_DCK", "vd", 0) ||
2276 !acpi_evalf(dock_handle, NULL, "_EJ0", "vd", 1))
56b6aeb0
HMH		 2277 return -EIO;
2278 } else if (strlencmp(cmd, "dock") == 0) {
2279 if (!acpi_evalf(dock_handle, NULL, "_DCK", "vd", 1))
2280 return -EIO;
2281 } else
2282 return -EINVAL;
1da177e4 2283 }
56b6aeb0
HMH		 2284
2285 return 0;
1da177e4 2286}
56b6aeb0 2287
85998248 2288#endif /* CONFIG_THINKPAD_ACPI_DOCK */
56b6aeb0
HMH		 2289
2290/*************************************************************************
2291 * Bay subdriver
2292 */
1da177e4 2293
85998248 2294#ifdef CONFIG_THINKPAD_ACPI_BAY
56b6aeb0
HMH		 2295IBM_HANDLE(bay, root, "\\_SB.PCI.IDE.SECN.MAST", /* 570 */
2296 "\\_SB.PCI0.IDE0.IDES.IDSM", /* 600e/x, 770e, 770x */
2297 "\\_SB.PCI0.SATA.SCND.MSTR", /* T60, X60, Z60 */
2298 "\\_SB.PCI0.IDE0.SCND.MSTR", /* all others */
2299 ); /* A21e, R30, R31 */
2300IBM_HANDLE(bay_ej, bay, "_EJ3", /* 600e/x, A2xm/p, A3x */
2301 "_EJ0", /* all others */
2302 ); /* 570,A21e,G4x,R30,R31,R32,R40e,R50e */
2303IBM_HANDLE(bay2, root, "\\_SB.PCI0.IDE0.PRIM.SLAV", /* A3x, R32 */
2304 "\\_SB.PCI0.IDE0.IDEP.IDPS", /* 600e/x, 770e, 770x */
2305 ); /* all others */
2306IBM_HANDLE(bay2_ej, bay2, "_EJ3", /* 600e/x, 770e, A3x */
2307 "_EJ0", /* 770x */
2308 ); /* all others */
2309
a5763f22 2310static int __init bay_init(struct ibm_init_struct *iibm)
1da177e4 2311{
fe08bc4b
HMH		 2312 vdbg_printk(TPACPI_DBG_INIT, "initializing bay subdriver\n");
2313
8d376cd6 2314 IBM_ACPIHANDLE_INIT(bay);
5fba344c 2315 if (bay_handle)
8d376cd6
HMH		 2316 IBM_ACPIHANDLE_INIT(bay_ej);
2317 IBM_ACPIHANDLE_INIT(bay2);
5fba344c 2318 if (bay2_handle)
8d376cd6 2319 IBM_ACPIHANDLE_INIT(bay2_ej);
5fba344c 2320
d8fd94d9
HMH		 2321 tp_features.bay_status = bay_handle &&
2322 acpi_evalf(bay_handle, NULL, "_STA", "qv");
2323 tp_features.bay_status2 = bay2_handle &&
2324 acpi_evalf(bay2_handle, NULL, "_STA", "qv");
78f81cc4 2325
d8fd94d9
HMH		 2326 tp_features.bay_eject = bay_handle && bay_ej_handle &&
2327 (strlencmp(bay_ej_path, "_EJ0") == 0 || experimental);
2328 tp_features.bay_eject2 = bay2_handle && bay2_ej_handle &&
2329 (strlencmp(bay2_ej_path, "_EJ0") == 0 || experimental);
1da177e4 2330
fe08bc4b
HMH		 2331 vdbg_printk(TPACPI_DBG_INIT,
2332 "bay 1: status %s, eject %s; bay 2: status %s, eject %s\n",
d8fd94d9
HMH		 2333 str_supported(tp_features.bay_status),
2334 str_supported(tp_features.bay_eject),
2335 str_supported(tp_features.bay_status2),
2336 str_supported(tp_features.bay_eject2));
fe08bc4b 2337
d8fd94d9
HMH		 2338 return (tp_features.bay_status || tp_features.bay_eject ||
2339 tp_features.bay_status2 || tp_features.bay_eject2)? 0 : 1;
1da177e4
LT		 2340}
2341
56b6aeb0
HMH		 2342static void bay_notify(struct ibm_struct *ibm, u32 event)
2343{
14e04fb3 2344 acpi_bus_generate_proc_event(ibm->acpi->device, event, 0);
962ce8ca
ZR		 2345 acpi_bus_generate_netlink_event(ibm->acpi->device->pnp.device_class,
2346 ibm->acpi->device->dev.bus_id,
2347 event, 0);
56b6aeb0
HMH		 2348}
2349
78f81cc4
BD		 2350#define bay_occupied(b) (_sta(b##_handle) & 1)
2351
2352static int bay_read(char *p)
1da177e4
LT		 2353{
2354 int len = 0;
78f81cc4
BD		 2355 int occupied = bay_occupied(bay);
2356 int occupied2 = bay_occupied(bay2);
2357 int eject, eject2;
2358
d8fd94d9
HMH		 2359 len += sprintf(p + len, "status:\t\t%s\n",
2360 tp_features.bay_status ?
2361 (occupied ? "occupied" : "unoccupied") :
2362 "not supported");
2363 if (tp_features.bay_status2)
78f81cc4
BD		 2364 len += sprintf(p + len, "status2:\t%s\n", occupied2 ?
2365 "occupied" : "unoccupied");
2366
d8fd94d9
HMH		 2367 eject = tp_features.bay_eject && occupied;
2368 eject2 = tp_features.bay_eject2 && occupied2;
78f81cc4
BD		 2369
2370 if (eject && eject2)
2371 len += sprintf(p + len, "commands:\teject, eject2\n");
2372 else if (eject)
1da177e4 2373 len += sprintf(p + len, "commands:\teject\n");
78f81cc4
BD		 2374 else if (eject2)
2375 len += sprintf(p + len, "commands:\teject2\n");
1da177e4
LT		 2376
2377 return len;
2378}
2379
78f81cc4 2380static int bay_write(char *buf)
1da177e4
LT		 2381{
2382 char *cmd;
2383
d8fd94d9 2384 if (!tp_features.bay_eject && !tp_features.bay_eject2)
78f81cc4
BD		 2385 return -ENODEV;
2386
1da177e4 2387 while ((cmd = next_cmd(&buf))) {
d8fd94d9 2388 if (tp_features.bay_eject && strlencmp(cmd, "eject") == 0) {
78f81cc4
BD		 2389 if (!acpi_evalf(bay_ej_handle, NULL, NULL, "vd", 1))
2390 return -EIO;
d8fd94d9 2391 } else if (tp_features.bay_eject2 &&
78f81cc4
BD		 2392 strlencmp(cmd, "eject2") == 0) {
2393 if (!acpi_evalf(bay2_ej_handle, NULL, NULL, "vd", 1))
1da177e4
LT		 2394 return -EIO;
2395 } else
2396 return -EINVAL;
2397 }
2398
2399 return 0;
78f81cc4 2400}
a5763f22 2401
8d376cd6
HMH		 2402static struct tp_acpi_drv_struct ibm_bay_acpidriver = {
2403 .notify = bay_notify,
2404 .handle = &bay_handle,
2405 .type = ACPI_SYSTEM_NOTIFY,
2406};
2407
a5763f22
HMH		 2408static struct ibm_struct bay_driver_data = {
2409 .name = "bay",
2410 .read = bay_read,
2411 .write = bay_write,
8d376cd6 2412 .acpi = &ibm_bay_acpidriver,
a5763f22
HMH		 2413};
2414
85998248 2415#endif /* CONFIG_THINKPAD_ACPI_BAY */
1da177e4 2416
56b6aeb0
HMH		 2417/*************************************************************************
2418 * CMOS subdriver
2419 */
2420
b616004c
HMH		 2421/* sysfs cmos_command -------------------------------------------------- */
2422static ssize_t cmos_command_store(struct device *dev,
2423 struct device_attribute *attr,
2424 const char *buf, size_t count)
2425{
2426 unsigned long cmos_cmd;
2427 int res;
2428
2429 if (parse_strtoul(buf, 21, &cmos_cmd))
2430 return -EINVAL;
2431
2432 res = issue_thinkpad_cmos_command(cmos_cmd);
2433 return (res)? res : count;
2434}
2435
2436static struct device_attribute dev_attr_cmos_command =
2437 __ATTR(cmos_command, S_IWUSR, NULL, cmos_command_store);
2438
2439/* --------------------------------------------------------------------- */
2440
a5763f22 2441static int __init cmos_init(struct ibm_init_struct *iibm)
5fba344c 2442{
b616004c
HMH		 2443 int res;
2444
fe08bc4b
HMH		 2445 vdbg_printk(TPACPI_DBG_INIT,
2446 "initializing cmos commands subdriver\n");
2447
8d376cd6 2448 IBM_ACPIHANDLE_INIT(cmos);
5fba344c 2449
fe08bc4b
HMH		 2450 vdbg_printk(TPACPI_DBG_INIT, "cmos commands are %s\n",
2451 str_supported(cmos_handle != NULL));
b616004c
HMH		 2452
2453 res = device_create_file(&tpacpi_pdev->dev, &dev_attr_cmos_command);
2454 if (res)
2455 return res;
2456
5fba344c
HMH		 2457 return (cmos_handle)? 0 : 1;
2458}
2459
b616004c
HMH		 2460static void cmos_exit(void)
2461{
2462 device_remove_file(&tpacpi_pdev->dev, &dev_attr_cmos_command);
2463}
2464
78f81cc4 2465static int cmos_read(char *p)
1da177e4
LT		 2466{
2467 int len = 0;
2468
78f81cc4
BD		 2469 /* cmos not supported on 570, 600e/x, 770e, 770x, A21e, A2xm/p,
2470 R30, R31, T20-22, X20-21 */
1da177e4
LT		 2471 if (!cmos_handle)
2472 len += sprintf(p + len, "status:\t\tnot supported\n");
2473 else {
2474 len += sprintf(p + len, "status:\t\tsupported\n");
78f81cc4 2475 len += sprintf(p + len, "commands:\t<cmd> (<cmd> is 0-21)\n");
1da177e4
LT		 2476 }
2477
2478 return len;
2479}
2480
78f81cc4 2481static int cmos_write(char *buf)
1da177e4
LT		 2482{
2483 char *cmd;
c9bea99c 2484 int cmos_cmd, res;
1da177e4
LT		 2485
2486 while ((cmd = next_cmd(&buf))) {
78f81cc4
BD		 2487 if (sscanf(cmd, "%u", &cmos_cmd) == 1 &&
2488 cmos_cmd >= 0 && cmos_cmd <= 21) {
1da177e4
LT		 2489 /* cmos_cmd set */
2490 } else
2491 return -EINVAL;
2492
c9bea99c
HMH		 2493 res = issue_thinkpad_cmos_command(cmos_cmd);
2494 if (res)
2495 return res;
1da177e4
LT		 2496 }
2497
2498 return 0;
78f81cc4
BD		 2499}
2500
a5763f22
HMH		 2501static struct ibm_struct cmos_driver_data = {
2502 .name = "cmos",
2503 .read = cmos_read,
2504 .write = cmos_write,
b616004c 2505 .exit = cmos_exit,
a5763f22 2506};
56b6aeb0
HMH		 2507
2508/*************************************************************************
2509 * LED subdriver
2510 */
2511
9a8e1738 2512static enum led_access_mode led_supported;
78f81cc4 2513
56b6aeb0
HMH		 2514IBM_HANDLE(led, ec, "SLED", /* 570 */
2515 "SYSL", /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20-21 */
2516 "LED", /* all others */
2517 ); /* R30, R31 */
2518
a5763f22 2519static int __init led_init(struct ibm_init_struct *iibm)
78f81cc4 2520{
fe08bc4b
HMH		 2521 vdbg_printk(TPACPI_DBG_INIT, "initializing LED subdriver\n");
2522
8d376cd6 2523 IBM_ACPIHANDLE_INIT(led);
5fba344c 2524
78f81cc4
BD		 2525 if (!led_handle)
2526 /* led not supported on R30, R31 */
efa27145 2527 led_supported = TPACPI_LED_NONE;
78f81cc4
BD		 2528 else if (strlencmp(led_path, "SLED") == 0)
2529 /* 570 */
efa27145 2530 led_supported = TPACPI_LED_570;
78f81cc4
BD		 2531 else if (strlencmp(led_path, "SYSL") == 0)
2532 /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20-21 */
efa27145 2533 led_supported = TPACPI_LED_OLD;
78f81cc4
BD		 2534 else
2535 /* all others */
efa27145 2536 led_supported = TPACPI_LED_NEW;
78f81cc4 2537
fe08bc4b
HMH		 2538 vdbg_printk(TPACPI_DBG_INIT, "LED commands are %s, mode %d\n",
2539 str_supported(led_supported), led_supported);
2540
5fba344c 2541 return (led_supported != TPACPI_LED_NONE)? 0 : 1;
78f81cc4
BD		 2542}
2543
2544#define led_status(s) ((s) == 0 ? "off" : ((s) == 1 ? "on" : "blinking"))
2545
2546static int led_read(char *p)
1da177e4
LT		 2547{
2548 int len = 0;
2549
78f81cc4
BD		 2550 if (!led_supported) {
2551 len += sprintf(p + len, "status:\t\tnot supported\n");
2552 return len;
2553 }
2554 len += sprintf(p + len, "status:\t\tsupported\n");
2555
efa27145 2556 if (led_supported == TPACPI_LED_570) {
78f81cc4
BD		 2557 /* 570 */
2558 int i, status;
2559 for (i = 0; i < 8; i++) {
2560 if (!acpi_evalf(ec_handle,
2561 &status, "GLED", "dd", 1 << i))
2562 return -EIO;
2563 len += sprintf(p + len, "%d:\t\t%s\n",
2564 i, led_status(status));
2565 }
2566 }
2567
1da177e4 2568 len += sprintf(p + len, "commands:\t"
78f81cc4 2569 "<led> on, <led> off, <led> blink (<led> is 0-7)\n");
1da177e4
LT		 2570
2571 return len;
2572}
2573
78f81cc4
BD		 2574/* off, on, blink */
2575static const int led_sled_arg1[] = { 0, 1, 3 };
2576static const int led_exp_hlbl[] = { 0, 0, 1 }; /* led# * */
2577static const int led_exp_hlcl[] = { 0, 1, 1 }; /* led# * */
2578static const int led_led_arg1[] = { 0, 0x80, 0xc0 };
2579
78f81cc4 2580static int led_write(char *buf)
1da177e4
LT		 2581{
2582 char *cmd;
78f81cc4
BD		 2583 int led, ind, ret;
2584
2585 if (!led_supported)
2586 return -ENODEV;
1da177e4
LT		 2587
2588 while ((cmd = next_cmd(&buf))) {
78f81cc4 2589 if (sscanf(cmd, "%d", &led) != 1 || led < 0 || led > 7)
1da177e4
LT		 2590 return -EINVAL;
2591
78f81cc4
BD		 2592 if (strstr(cmd, "off")) {
2593 ind = 0;
1da177e4 2594 } else if (strstr(cmd, "on")) {
78f81cc4
BD		 2595 ind = 1;
2596 } else if (strstr(cmd, "blink")) {
2597 ind = 2;
1da177e4
LT		 2598 } else
2599 return -EINVAL;
78f81cc4 2600
efa27145 2601 if (led_supported == TPACPI_LED_570) {
78f81cc4
BD		 2602 /* 570 */
2603 led = 1 << led;
1da177e4 2604 if (!acpi_evalf(led_handle, NULL, NULL, "vdd",
78f81cc4 2605 led, led_sled_arg1[ind]))
1da177e4 2606 return -EIO;
efa27145 2607 } else if (led_supported == TPACPI_LED_OLD) {
78f81cc4
BD		 2608 /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20 */
2609 led = 1 << led;
efa27145 2610 ret = ec_write(TPACPI_LED_EC_HLMS, led);
78f81cc4
BD		 2611 if (ret >= 0)
2612 ret =
efa27145 2613 ec_write(TPACPI_LED_EC_HLBL,
e062e034 2614 led * led_exp_hlbl[ind]);
78f81cc4
BD		 2615 if (ret >= 0)
2616 ret =
efa27145 2617 ec_write(TPACPI_LED_EC_HLCL,
e062e034 2618 led * led_exp_hlcl[ind]);
78f81cc4
BD		 2619 if (ret < 0)
2620 return ret;
2621 } else {
2622 /* all others */
2623 if (!acpi_evalf(led_handle, NULL, NULL, "vdd",
2624 led, led_led_arg1[ind]))
1da177e4 2625 return -EIO;
78f81cc4
BD		 2626 }
2627 }
2628
2629 return 0;
2630}
2631
a5763f22
HMH		 2632static struct ibm_struct led_driver_data = {
2633 .name = "led",
2634 .read = led_read,
2635 .write = led_write,
2636};
2637
56b6aeb0
HMH		 2638/*************************************************************************
2639 * Beep subdriver
2640 */
2641
2642IBM_HANDLE(beep, ec, "BEEP"); /* all except R30, R31 */
2643
a5763f22 2644static int __init beep_init(struct ibm_init_struct *iibm)
5fba344c 2645{
fe08bc4b
HMH		 2646 vdbg_printk(TPACPI_DBG_INIT, "initializing beep subdriver\n");
2647
8d376cd6 2648 IBM_ACPIHANDLE_INIT(beep);
5fba344c 2649
fe08bc4b
HMH		 2650 vdbg_printk(TPACPI_DBG_INIT, "beep is %s\n",
2651 str_supported(beep_handle != NULL));
2652
5fba344c
HMH		 2653 return (beep_handle)? 0 : 1;
2654}
2655
78f81cc4
BD		 2656static int beep_read(char *p)
2657{
2658 int len = 0;
2659
2660 if (!beep_handle)
2661 len += sprintf(p + len, "status:\t\tnot supported\n");
2662 else {
2663 len += sprintf(p + len, "status:\t\tsupported\n");
2664 len += sprintf(p + len, "commands:\t<cmd> (<cmd> is 0-17)\n");
2665 }
2666
2667 return len;
2668}
2669
2670static int beep_write(char *buf)
2671{
2672 char *cmd;
2673 int beep_cmd;
2674
2675 if (!beep_handle)
2676 return -ENODEV;
2677
2678 while ((cmd = next_cmd(&buf))) {
2679 if (sscanf(cmd, "%u", &beep_cmd) == 1 &&
2680 beep_cmd >= 0 && beep_cmd <= 17) {
2681 /* beep_cmd set */
2682 } else
2683 return -EINVAL;
2684 if (!acpi_evalf(beep_handle, NULL, NULL, "vdd", beep_cmd, 0))
2685 return -EIO;
2686 }
2687
2688 return 0;
2689}
2690
a5763f22
HMH		 2691static struct ibm_struct beep_driver_data = {
2692 .name = "beep",
2693 .read = beep_read,
2694 .write = beep_write,
2695};
2696
56b6aeb0
HMH		 2697/*************************************************************************
2698 * Thermal subdriver
2699 */
78f81cc4 2700
a26f878a 2701static enum thermal_access_mode thermal_read_mode;
78f81cc4 2702
2c37aa4e
HMH		 2703/* sysfs temp##_input -------------------------------------------------- */
2704
2705static ssize_t thermal_temp_input_show(struct device *dev,
2706 struct device_attribute *attr,
2707 char *buf)
2708{
2709 struct sensor_device_attribute *sensor_attr =
2710 to_sensor_dev_attr(attr);
2711 int idx = sensor_attr->index;
2712 s32 value;
2713 int res;
2714
2715 res = thermal_get_sensor(idx, &value);
2716 if (res)
2717 return res;
2718 if (value == TP_EC_THERMAL_TMP_NA * 1000)
2719 return -ENXIO;
2720
2721 return snprintf(buf, PAGE_SIZE, "%d\n", value);
2722}
2723
2724#define THERMAL_SENSOR_ATTR_TEMP(_idxA, _idxB) \
2725 SENSOR_ATTR(temp##_idxA##_input, S_IRUGO, thermal_temp_input_show, NULL, _idxB)
2726
2727static struct sensor_device_attribute sensor_dev_attr_thermal_temp_input[] = {
2728 THERMAL_SENSOR_ATTR_TEMP(1, 0),
2729 THERMAL_SENSOR_ATTR_TEMP(2, 1),
2730 THERMAL_SENSOR_ATTR_TEMP(3, 2),
2731 THERMAL_SENSOR_ATTR_TEMP(4, 3),
2732 THERMAL_SENSOR_ATTR_TEMP(5, 4),
2733 THERMAL_SENSOR_ATTR_TEMP(6, 5),
2734 THERMAL_SENSOR_ATTR_TEMP(7, 6),
2735 THERMAL_SENSOR_ATTR_TEMP(8, 7),
2736 THERMAL_SENSOR_ATTR_TEMP(9, 8),
2737 THERMAL_SENSOR_ATTR_TEMP(10, 9),
2738 THERMAL_SENSOR_ATTR_TEMP(11, 10),
2739 THERMAL_SENSOR_ATTR_TEMP(12, 11),
2740 THERMAL_SENSOR_ATTR_TEMP(13, 12),
2741 THERMAL_SENSOR_ATTR_TEMP(14, 13),
2742 THERMAL_SENSOR_ATTR_TEMP(15, 14),
2743 THERMAL_SENSOR_ATTR_TEMP(16, 15),
2744};
2745
2746#define THERMAL_ATTRS(X) \
2747 &sensor_dev_attr_thermal_temp_input[X].dev_attr.attr
2748
2749static struct attribute *thermal_temp_input_attr[] = {
2750 THERMAL_ATTRS(8),
2751 THERMAL_ATTRS(9),
2752 THERMAL_ATTRS(10),
2753 THERMAL_ATTRS(11),
2754 THERMAL_ATTRS(12),
2755 THERMAL_ATTRS(13),
2756 THERMAL_ATTRS(14),
2757 THERMAL_ATTRS(15),
2758 THERMAL_ATTRS(0),
2759 THERMAL_ATTRS(1),
2760 THERMAL_ATTRS(2),
2761 THERMAL_ATTRS(3),
2762 THERMAL_ATTRS(4),
2763 THERMAL_ATTRS(5),
2764 THERMAL_ATTRS(6),
2765 THERMAL_ATTRS(7),
2766 NULL
2767};
2768
2769static const struct attribute_group thermal_temp_input16_group = {
2770 .attrs = thermal_temp_input_attr
2771};
2772
2773static const struct attribute_group thermal_temp_input8_group = {
2774 .attrs = &thermal_temp_input_attr[8]
2775};
2776
2777#undef THERMAL_SENSOR_ATTR_TEMP
2778#undef THERMAL_ATTRS
2779
2780/* --------------------------------------------------------------------- */
2781
a5763f22 2782static int __init thermal_init(struct ibm_init_struct *iibm)
78f81cc4 2783{
60eb0b35
HMH		 2784 u8 t, ta1, ta2;
2785 int i;
5fba344c 2786 int acpi_tmp7;
2c37aa4e 2787 int res;
5fba344c 2788
fe08bc4b
HMH		 2789 vdbg_printk(TPACPI_DBG_INIT, "initializing thermal subdriver\n");
2790
5fba344c 2791 acpi_tmp7 = acpi_evalf(ec_handle, NULL, "TMP7", "qv");
60eb0b35 2792
3d6f99ca 2793 if (thinkpad_id.ec_model) {
60eb0b35
HMH		 2794 /*
2795 * Direct EC access mode: sensors at registers
2796 * 0x78-0x7F, 0xC0-0xC7. Registers return 0x00 for
2797 * non-implemented, thermal sensors return 0x80 when
2798 * not available
2799 */
78f81cc4 2800
60eb0b35
HMH		 2801 ta1 = ta2 = 0;
2802 for (i = 0; i < 8; i++) {
04cc862c 2803 if (acpi_ec_read(TP_EC_THERMAL_TMP0 + i, &t)) {
60eb0b35
HMH		 2804 ta1 |= t;
2805 } else {
2806 ta1 = 0;
2807 break;
2808 }
04cc862c 2809 if (acpi_ec_read(TP_EC_THERMAL_TMP8 + i, &t)) {
60eb0b35
HMH		 2810 ta2 |= t;
2811 } else {
2812 ta1 = 0;
2813 break;
2814 }
2815 }
2816 if (ta1 == 0) {
2817 /* This is sheer paranoia, but we handle it anyway */
2818 if (acpi_tmp7) {
2819 printk(IBM_ERR
2820 "ThinkPad ACPI EC access misbehaving, "
2821 "falling back to ACPI TMPx access mode\n");
efa27145 2822 thermal_read_mode = TPACPI_THERMAL_ACPI_TMP07;
60eb0b35
HMH		 2823 } else {
2824 printk(IBM_ERR
2825 "ThinkPad ACPI EC access misbehaving, "
2826 "disabling thermal sensors access\n");
efa27145 2827 thermal_read_mode = TPACPI_THERMAL_NONE;
60eb0b35
HMH		 2828 }
2829 } else {
2830 thermal_read_mode =
2831 (ta2 != 0) ?
efa27145 2832 TPACPI_THERMAL_TPEC_16 : TPACPI_THERMAL_TPEC_8;
60eb0b35
HMH		 2833 }
2834 } else if (acpi_tmp7) {
a26f878a
HMH		 2835 if (acpi_evalf(ec_handle, NULL, "UPDT", "qv")) {
2836 /* 600e/x, 770e, 770x */
efa27145 2837 thermal_read_mode = TPACPI_THERMAL_ACPI_UPDT;
a26f878a
HMH		 2838 } else {
2839 /* Standard ACPI TMPx access, max 8 sensors */
efa27145 2840 thermal_read_mode = TPACPI_THERMAL_ACPI_TMP07;
a26f878a
HMH		 2841 }
2842 } else {
2843 /* temperatures not supported on 570, G4x, R30, R31, R32 */
efa27145 2844 thermal_read_mode = TPACPI_THERMAL_NONE;
a26f878a 2845 }
78f81cc4 2846
fe08bc4b
HMH		 2847 vdbg_printk(TPACPI_DBG_INIT, "thermal is %s, mode %d\n",
2848 str_supported(thermal_read_mode != TPACPI_THERMAL_NONE),
2849 thermal_read_mode);
2850
2c37aa4e
HMH		 2851 switch(thermal_read_mode) {
2852 case TPACPI_THERMAL_TPEC_16:
2853 res = sysfs_create_group(&tpacpi_pdev->dev.kobj,
2854 &thermal_temp_input16_group);
2855 if (res)
2856 return res;
2857 break;
2858 case TPACPI_THERMAL_TPEC_8:
2859 case TPACPI_THERMAL_ACPI_TMP07:
2860 case TPACPI_THERMAL_ACPI_UPDT:
2861 res = sysfs_create_group(&tpacpi_pdev->dev.kobj,
2862 &thermal_temp_input8_group);
2863 if (res)
2864 return res;
2865 break;
2866 case TPACPI_THERMAL_NONE:
2867 default:
2868 return 1;
2869 }
2870
2871 return 0;
2872}
2873
2874static void thermal_exit(void)
2875{
2876 switch(thermal_read_mode) {
2877 case TPACPI_THERMAL_TPEC_16:
2878 sysfs_remove_group(&tpacpi_pdev->dev.kobj,
2879 &thermal_temp_input16_group);
2880 break;
2881 case TPACPI_THERMAL_TPEC_8:
2882 case TPACPI_THERMAL_ACPI_TMP07:
2883 case TPACPI_THERMAL_ACPI_UPDT:
2884 sysfs_remove_group(&tpacpi_pdev->dev.kobj,
2885 &thermal_temp_input16_group);
2886 break;
2887 case TPACPI_THERMAL_NONE:
2888 default:
2889 break;
2890 }
78f81cc4
BD		 2891}
2892
04cc862c
HMH		 2893/* idx is zero-based */
2894static int thermal_get_sensor(int idx, s32 *value)
78f81cc4 2895{
04cc862c 2896 int t;
60eb0b35 2897 s8 tmp;
04cc862c 2898 char tmpi[5];
78f81cc4 2899
04cc862c 2900 t = TP_EC_THERMAL_TMP0;
78f81cc4 2901
a26f878a 2902 switch (thermal_read_mode) {
efa27145
HMH		 2903#if TPACPI_MAX_THERMAL_SENSORS >= 16
2904 case TPACPI_THERMAL_TPEC_16:
04cc862c
HMH		 2905 if (idx >= 8 && idx <= 15) {
2906 t = TP_EC_THERMAL_TMP8;
2907 idx -= 8;
60eb0b35
HMH		 2908 }
2909 /* fallthrough */
2910#endif
efa27145 2911 case TPACPI_THERMAL_TPEC_8:
04cc862c
HMH		 2912 if (idx <= 7) {
2913 if (!acpi_ec_read(t + idx, &tmp))
78f81cc4 2914 return -EIO;
04cc862c
HMH		 2915 *value = tmp * 1000;
2916 return 0;
60eb0b35 2917 }
04cc862c 2918 break;
78f81cc4 2919
efa27145 2920 case TPACPI_THERMAL_ACPI_UPDT:
04cc862c
HMH		 2921 if (idx <= 7) {
2922 snprintf(tmpi, sizeof(tmpi), "TMP%c", '0' + idx);
2923 if (!acpi_evalf(ec_handle, NULL, "UPDT", "v"))
2924 return -EIO;
78f81cc4
BD		 2925 if (!acpi_evalf(ec_handle, &t, tmpi, "d"))
2926 return -EIO;
04cc862c
HMH		 2927 *value = (t - 2732) * 100;
2928 return 0;
78f81cc4 2929 }
04cc862c 2930 break;
78f81cc4 2931
efa27145 2932 case TPACPI_THERMAL_ACPI_TMP07:
04cc862c
HMH		 2933 if (idx <= 7) {
2934 snprintf(tmpi, sizeof(tmpi), "TMP%c", '0' + idx);
78f81cc4
BD		 2935 if (!acpi_evalf(ec_handle, &t, tmpi, "d"))
2936 return -EIO;
a8fba3da
HMH		 2937 if (t > 127 || t < -127)
2938 t = TP_EC_THERMAL_TMP_NA;
04cc862c
HMH		 2939 *value = t * 1000;
2940 return 0;
78f81cc4 2941 }
04cc862c 2942 break;
78f81cc4 2943
efa27145 2944 case TPACPI_THERMAL_NONE:
a26f878a 2945 default:
04cc862c
HMH		 2946 return -ENOSYS;
2947 }
2948
2949 return -EINVAL;
2950}
2951
2952static int thermal_get_sensors(struct ibm_thermal_sensors_struct *s)
2953{
2954 int res, i;
2955 int n;
2956
2957 n = 8;
2958 i = 0;
2959
2960 if (!s)
2961 return -EINVAL;
2962
2963 if (thermal_read_mode == TPACPI_THERMAL_TPEC_16)
2964 n = 16;
2965
2966 for(i = 0 ; i < n; i++) {
2967 res = thermal_get_sensor(i, &s->temp[i]);
2968 if (res)
2969 return res;
78f81cc4 2970 }
04cc862c
HMH		 2971
2972 return n;
a26f878a
HMH		 2973}
2974
2975static int thermal_read(char *p)
2976{
2977 int len = 0;
2978 int n, i;
2979 struct ibm_thermal_sensors_struct t;
2980
2981 n = thermal_get_sensors(&t);
2982 if (unlikely(n < 0))
2983 return n;
2984
2985 len += sprintf(p + len, "temperatures:\t");
2986
2987 if (n > 0) {
2988 for (i = 0; i < (n - 1); i++)
2989 len += sprintf(p + len, "%d ", t.temp[i] / 1000);
2990 len += sprintf(p + len, "%d\n", t.temp[i] / 1000);
2991 } else
2992 len += sprintf(p + len, "not supported\n");
78f81cc4
BD		 2993
2994 return len;
2995}
2996
a5763f22
HMH		 2997static struct ibm_struct thermal_driver_data = {
2998 .name = "thermal",
2999 .read = thermal_read,
2c37aa4e 3000 .exit = thermal_exit,
a5763f22
HMH		 3001};
3002
56b6aeb0
HMH		 3003/*************************************************************************
3004 * EC Dump subdriver
3005 */
3006
78f81cc4
BD		 3007static u8 ecdump_regs[256];
3008
3009static int ecdump_read(char *p)
3010{
3011 int len = 0;
3012 int i, j;
3013 u8 v;
3014
3015 len += sprintf(p + len, "EC "
3016 " +00 +01 +02 +03 +04 +05 +06 +07"
3017 " +08 +09 +0a +0b +0c +0d +0e +0f\n");
3018 for (i = 0; i < 256; i += 16) {
3019 len += sprintf(p + len, "EC 0x%02x:", i);
3020 for (j = 0; j < 16; j++) {
3021 if (!acpi_ec_read(i + j, &v))
3022 break;
3023 if (v != ecdump_regs[i + j])
3024 len += sprintf(p + len, " *%02x", v);
3025 else
3026 len += sprintf(p + len, " %02x", v);
3027 ecdump_regs[i + j] = v;
3028 }
3029 len += sprintf(p + len, "\n");
3030 if (j != 16)
3031 break;
3032 }
3033
3034 /* These are way too dangerous to advertise openly... */
3035#if 0
3036 len += sprintf(p + len, "commands:\t0x<offset> 0x<value>"
3037 " (<offset> is 00-ff, <value> is 00-ff)\n");
3038 len += sprintf(p + len, "commands:\t0x<offset> <value> "
3039 " (<offset> is 00-ff, <value> is 0-255)\n");
3040#endif
3041 return len;
3042}
3043
3044static int ecdump_write(char *buf)
3045{
3046 char *cmd;
3047 int i, v;
3048
3049 while ((cmd = next_cmd(&buf))) {
3050 if (sscanf(cmd, "0x%x 0x%x", &i, &v) == 2) {
3051 /* i and v set */
3052 } else if (sscanf(cmd, "0x%x %u", &i, &v) == 2) {
3053 /* i and v set */
3054 } else
3055 return -EINVAL;
3056 if (i >= 0 && i < 256 && v >= 0 && v < 256) {
3057 if (!acpi_ec_write(i, v))
1da177e4
LT		 3058 return -EIO;
3059 } else
3060 return -EINVAL;
3061 }
3062
3063 return 0;
78f81cc4
BD		 3064}
3065
a5763f22
HMH		 3066static struct ibm_struct ecdump_driver_data = {
3067 .name = "ecdump",
3068 .read = ecdump_read,
3069 .write = ecdump_write,
92641177 3070 .flags.experimental = 1,
a5763f22
HMH		 3071};
3072
56b6aeb0
HMH		 3073/*************************************************************************
3074 * Backlight/brightness subdriver
3075 */
3076
94954cc6 3077static struct backlight_device *ibm_backlight_device;
56b6aeb0
HMH		 3078
3079static struct backlight_ops ibm_backlight_data = {
3080 .get_brightness = brightness_get,
3081 .update_status = brightness_update_status,
3082};
3083
f432255e
HMH		 3084static struct mutex brightness_mutex;
3085
a5763f22 3086static int __init brightness_init(struct ibm_init_struct *iibm)
56b6aeb0
HMH		 3087{
3088 int b;
3089
fe08bc4b
HMH		 3090 vdbg_printk(TPACPI_DBG_INIT, "initializing brightness subdriver\n");
3091
f432255e
HMH		 3092 mutex_init(&brightness_mutex);
3093
24d3b774
HMH		 3094 if (!brightness_mode) {
3095 if (thinkpad_id.vendor == PCI_VENDOR_ID_LENOVO)
3096 brightness_mode = 2;
3097 else
3098 brightness_mode = 3;
3099
3100 dbg_printk(TPACPI_DBG_INIT, "selected brightness_mode=%d\n",
3101 brightness_mode);
3102 }
3103
3104 if (brightness_mode > 3)
3105 return -EINVAL;
3106
56b6aeb0
HMH		 3107 b = brightness_get(NULL);
3108 if (b < 0)
24d3b774 3109 return 1;
56b6aeb0 3110
7d5a015e
HMH		 3111 ibm_backlight_device = backlight_device_register(
3112 TPACPI_BACKLIGHT_DEV_NAME, NULL, NULL,
3113 &ibm_backlight_data);
56b6aeb0
HMH		 3114 if (IS_ERR(ibm_backlight_device)) {
3115 printk(IBM_ERR "Could not register backlight device\n");
3116 return PTR_ERR(ibm_backlight_device);
3117 }
fe08bc4b 3118 vdbg_printk(TPACPI_DBG_INIT, "brightness is supported\n");
56b6aeb0
HMH		 3119
3120 ibm_backlight_device->props.max_brightness = 7;
3121 ibm_backlight_device->props.brightness = b;
3122 backlight_update_status(ibm_backlight_device);
3123
3124 return 0;
3125}
3126
3127static void brightness_exit(void)
3128{
3129 if (ibm_backlight_device) {
fe08bc4b
HMH		 3130 vdbg_printk(TPACPI_DBG_EXIT,
3131 "calling backlight_device_unregister()\n");
56b6aeb0
HMH		 3132 backlight_device_unregister(ibm_backlight_device);
3133 ibm_backlight_device = NULL;
3134 }
3135}
3136
3137static int brightness_update_status(struct backlight_device *bd)
3138{
3139 return brightness_set(
3140 (bd->props.fb_blank == FB_BLANK_UNBLANK &&
3141 bd->props.power == FB_BLANK_UNBLANK) ?
3142 bd->props.brightness : 0);
3143}
3144
24d3b774
HMH		 3145/*
3146 * ThinkPads can read brightness from two places: EC 0x31, or
3147 * CMOS NVRAM byte 0x5E, bits 0-3.
3148 */
8acb0250
HM		 3149static int brightness_get(struct backlight_device *bd)
3150{
24d3b774 3151 u8 lec = 0, lcmos = 0, level = 0;
8acb0250 3152
24d3b774
HMH		 3153 if (brightness_mode & 1) {
3154 if (!acpi_ec_read(brightness_offset, &lec))
3155 return -EIO;
3156 lec &= 7;
3157 level = lec;
3158 };
3159 if (brightness_mode & 2) {
3160 lcmos = (nvram_read_byte(TP_NVRAM_ADDR_BRIGHTNESS)
3161 & TP_NVRAM_MASK_LEVEL_BRIGHTNESS)
3162 >> TP_NVRAM_POS_LEVEL_BRIGHTNESS;
3163 level = lcmos;
3164 }
3165
3166 if (brightness_mode == 3 && lec != lcmos) {
3167 printk(IBM_ERR
3168 "CMOS NVRAM (%u) and EC (%u) do not agree "
3169 "on display brightness level\n",
3170 (unsigned int) lcmos,
3171 (unsigned int) lec);
3172 return -EIO;
3173 }
fb87a811 3174
8d297264 3175 return level;
8acb0250
HM		 3176}
3177
8acb0250 3178static int brightness_set(int value)
1da177e4 3179{
f432255e
HMH		 3180 int cmos_cmd, inc, i, res;
3181 int current_value;
8acb0250 3182
24d3b774
HMH		 3183 if (value > 7)
3184 return -EINVAL;
8acb0250 3185
f432255e
HMH		 3186 res = mutex_lock_interruptible(&brightness_mutex);
3187 if (res < 0)
3188 return res;
3189
3190 current_value = brightness_get(NULL);
3191 if (current_value < 0) {
3192 res = current_value;
3193 goto errout;
3194 }
3195
24d3b774
HMH		 3196 cmos_cmd = value > current_value ?
3197 TP_CMOS_BRIGHTNESS_UP :
3198 TP_CMOS_BRIGHTNESS_DOWN;
8acb0250 3199 inc = value > current_value ? 1 : -1;
24d3b774 3200
f432255e 3201 res = 0;
8acb0250 3202 for (i = current_value; i != value; i += inc) {
24d3b774 3203 if ((brightness_mode & 2) &&
f432255e
HMH		 3204 issue_thinkpad_cmos_command(cmos_cmd)) {
3205 res = -EIO;
3206 goto errout;
3207 }
24d3b774 3208 if ((brightness_mode & 1) &&
f432255e
HMH		 3209 !acpi_ec_write(brightness_offset, i + inc)) {
3210 res = -EIO;
3211 goto errout;;
3212 }
8acb0250
HM		 3213 }
3214
f432255e
HMH		 3215errout:
3216 mutex_unlock(&brightness_mutex);
3217 return res;
8acb0250
HM		 3218}
3219
56b6aeb0
HMH		 3220static int brightness_read(char *p)
3221{
3222 int len = 0;
3223 int level;
3224
3225 if ((level = brightness_get(NULL)) < 0) {
3226 len += sprintf(p + len, "level:\t\tunreadable\n");
3227 } else {
3228 len += sprintf(p + len, "level:\t\t%d\n", level & 0x7);
3229 len += sprintf(p + len, "commands:\tup, down\n");
3230 len += sprintf(p + len, "commands:\tlevel <level>"
3231 " (<level> is 0-7)\n");
3232 }
3233
3234 return len;
3235}
3236
8acb0250
HM		 3237static int brightness_write(char *buf)
3238{
3239 int level;
78f81cc4 3240 int new_level;
1da177e4 3241 char *cmd;
1da177e4
LT		 3242
3243 while ((cmd = next_cmd(&buf))) {
8acb0250
HM		 3244 if ((level = brightness_get(NULL)) < 0)
3245 return level;
78f81cc4
BD		 3246 level &= 7;
3247
3248 if (strlencmp(cmd, "up") == 0) {
3249 new_level = level == 7 ? 7 : level + 1;
3250 } else if (strlencmp(cmd, "down") == 0) {
3251 new_level = level == 0 ? 0 : level - 1;
3252 } else if (sscanf(cmd, "level %d", &new_level) == 1 &&
3253 new_level >= 0 && new_level <= 7) {
3254 /* new_level set */
3255 } else
3256 return -EINVAL;
3257
8acb0250 3258 brightness_set(new_level);
78f81cc4
BD		 3259 }
3260
3261 return 0;
3262}
3263
a5763f22
HMH		 3264static struct ibm_struct brightness_driver_data = {
3265 .name = "brightness",
3266 .read = brightness_read,
3267 .write = brightness_write,
3268 .exit = brightness_exit,
3269};
3270
56b6aeb0
HMH		 3271/*************************************************************************
3272 * Volume subdriver
3273 */
fb87a811 3274
78f81cc4
BD		 3275static int volume_read(char *p)
3276{
3277 int len = 0;
3278 u8 level;
3279
3280 if (!acpi_ec_read(volume_offset, &level)) {
3281 len += sprintf(p + len, "level:\t\tunreadable\n");
3282 } else {
3283 len += sprintf(p + len, "level:\t\t%d\n", level & 0xf);
3284 len += sprintf(p + len, "mute:\t\t%s\n", onoff(level, 6));
3285 len += sprintf(p + len, "commands:\tup, down, mute\n");
3286 len += sprintf(p + len, "commands:\tlevel <level>"
3287 " (<level> is 0-15)\n");
3288 }
3289
3290 return len;
3291}
3292
78f81cc4
BD		 3293static int volume_write(char *buf)
3294{
3295 int cmos_cmd, inc, i;
3296 u8 level, mute;
3297 int new_level, new_mute;
3298 char *cmd;
3299
3300 while ((cmd = next_cmd(&buf))) {
3301 if (!acpi_ec_read(volume_offset, &level))
3302 return -EIO;
3303 new_mute = mute = level & 0x40;
3304 new_level = level = level & 0xf;
3305
3306 if (strlencmp(cmd, "up") == 0) {
3307 if (mute)
3308 new_mute = 0;
3309 else
3310 new_level = level == 15 ? 15 : level + 1;
3311 } else if (strlencmp(cmd, "down") == 0) {
3312 if (mute)
3313 new_mute = 0;
3314 else
3315 new_level = level == 0 ? 0 : level - 1;
3316 } else if (sscanf(cmd, "level %d", &new_level) == 1 &&
3317 new_level >= 0 && new_level <= 15) {
3318 /* new_level set */
3319 } else if (strlencmp(cmd, "mute") == 0) {
3320 new_mute = 0x40;
1da177e4
LT		 3321 } else
3322 return -EINVAL;
3323
78f81cc4 3324 if (new_level != level) { /* mute doesn't change */
56b6aeb0 3325 cmos_cmd = new_level > level ? TP_CMOS_VOLUME_UP : TP_CMOS_VOLUME_DOWN;
78f81cc4
BD		 3326 inc = new_level > level ? 1 : -1;
3327
c9bea99c 3328 if (mute && (issue_thinkpad_cmos_command(cmos_cmd) ||
78f81cc4
BD		 3329 !acpi_ec_write(volume_offset, level)))
3330 return -EIO;
3331
3332 for (i = level; i != new_level; i += inc)
c9bea99c 3333 if (issue_thinkpad_cmos_command(cmos_cmd) ||
78f81cc4
BD		 3334 !acpi_ec_write(volume_offset, i + inc))
3335 return -EIO;
3336
c9bea99c 3337 if (mute && (issue_thinkpad_cmos_command(TP_CMOS_VOLUME_MUTE) ||
78f81cc4
BD		 3338 !acpi_ec_write(volume_offset,
3339 new_level + mute)))
3340 return -EIO;
3341 }
3342
3343 if (new_mute != mute) { /* level doesn't change */
56b6aeb0 3344 cmos_cmd = new_mute ? TP_CMOS_VOLUME_MUTE : TP_CMOS_VOLUME_UP;
78f81cc4 3345
c9bea99c 3346 if (issue_thinkpad_cmos_command(cmos_cmd) ||
78f81cc4
BD		 3347 !acpi_ec_write(volume_offset, level + new_mute))
3348 return -EIO;
3349 }
3350 }
3351
3352 return 0;
3353}
3354
a5763f22
HMH		 3355static struct ibm_struct volume_driver_data = {
3356 .name = "volume",
3357 .read = volume_read,
3358 .write = volume_write,
3359};
56b6aeb0
HMH		 3360
3361/*************************************************************************
3362 * Fan subdriver
3363 */
3364
3365/*
3366 * FAN ACCESS MODES
3367 *
efa27145 3368 * TPACPI_FAN_RD_ACPI_GFAN:
56b6aeb0
HMH		 3369 * ACPI GFAN method: returns fan level
3370 *
efa27145 3371 * see TPACPI_FAN_WR_ACPI_SFAN
f51d1a39 3372 * EC 0x2f (HFSP) not available if GFAN exists
56b6aeb0 3373 *
efa27145 3374 * TPACPI_FAN_WR_ACPI_SFAN:
56b6aeb0
HMH		 3375 * ACPI SFAN method: sets fan level, 0 (stop) to 7 (max)
3376 *
f51d1a39
HMH		 3377 * EC 0x2f (HFSP) might be available *for reading*, but do not use
3378 * it for writing.
56b6aeb0 3379 *
efa27145 3380 * TPACPI_FAN_WR_TPEC:
f51d1a39
HMH		 3381 * ThinkPad EC register 0x2f (HFSP): fan control loop mode
3382 * Supported on almost all ThinkPads
56b6aeb0
HMH		 3383 *
3384 * Fan speed changes of any sort (including those caused by the
3385 * disengaged mode) are usually done slowly by the firmware as the
3386 * maximum ammount of fan duty cycle change per second seems to be
3387 * limited.
3388 *
3389 * Reading is not available if GFAN exists.
3390 * Writing is not available if SFAN exists.
3391 *
3392 * Bits
3393 * 7 automatic mode engaged;
3394 * (default operation mode of the ThinkPad)
3395 * fan level is ignored in this mode.
f51d1a39 3396 * 6 full speed mode (takes precedence over bit 7);
56b6aeb0 3397 * not available on all thinkpads. May disable
f51d1a39
HMH		 3398 * the tachometer while the fan controller ramps up
3399 * the speed (which can take up to a few *minutes*).
3400 * Speeds up fan to 100% duty-cycle, which is far above
3401 * the standard RPM levels. It is not impossible that
3402 * it could cause hardware damage.
56b6aeb0
HMH		 3403 * 5-3 unused in some models. Extra bits for fan level
3404 * in others, but still useless as all values above
3405 * 7 map to the same speed as level 7 in these models.
3406 * 2-0 fan level (0..7 usually)
3407 * 0x00 = stop
3408 * 0x07 = max (set when temperatures critical)
3409 * Some ThinkPads may have other levels, see
efa27145 3410 * TPACPI_FAN_WR_ACPI_FANS (X31/X40/X41)
56b6aeb0
HMH		 3411 *
3412 * FIRMWARE BUG: on some models, EC 0x2f might not be initialized at
3413 * boot. Apparently the EC does not intialize it, so unless ACPI DSDT
3414 * does so, its initial value is meaningless (0x07).
3415 *
3416 * For firmware bugs, refer to:
3417 * http://thinkwiki.org/wiki/Embedded_Controller_Firmware#Firmware_Issues
3418 *
3419 * ----
3420 *
3421 * ThinkPad EC register 0x84 (LSB), 0x85 (MSB):
3422 * Main fan tachometer reading (in RPM)
3423 *
3424 * This register is present on all ThinkPads with a new-style EC, and
3425 * it is known not to be present on the A21m/e, and T22, as there is
3426 * something else in offset 0x84 according to the ACPI DSDT. Other
3427 * ThinkPads from this same time period (and earlier) probably lack the
3428 * tachometer as well.
3429 *
3430 * Unfortunately a lot of ThinkPads with new-style ECs but whose firwmare
3431 * was never fixed by IBM to report the EC firmware version string
3432 * probably support the tachometer (like the early X models), so
3433 * detecting it is quite hard. We need more data to know for sure.
3434 *
3435 * FIRMWARE BUG: always read 0x84 first, otherwise incorrect readings
3436 * might result.
3437 *
f51d1a39
HMH		 3438 * FIRMWARE BUG: may go stale while the EC is switching to full speed
3439 * mode.
56b6aeb0
HMH		 3440 *
3441 * For firmware bugs, refer to:
3442 * http://thinkwiki.org/wiki/Embedded_Controller_Firmware#Firmware_Issues
3443 *
efa27145 3444 * TPACPI_FAN_WR_ACPI_FANS:
56b6aeb0
HMH		 3445 * ThinkPad X31, X40, X41. Not available in the X60.
3446 *
3447 * FANS ACPI handle: takes three arguments: low speed, medium speed,
3448 * high speed. ACPI DSDT seems to map these three speeds to levels
3449 * as follows: STOP LOW LOW MED MED HIGH HIGH HIGH HIGH
3450 * (this map is stored on FAN0..FAN8 as "0,1,1,2,2,3,3,3,3")
3451 *
3452 * The speeds are stored on handles
3453 * (FANA:FAN9), (FANC:FANB), (FANE:FAND).
3454 *
3455 * There are three default speed sets, acessible as handles:
3456 * FS1L,FS1M,FS1H; FS2L,FS2M,FS2H; FS3L,FS3M,FS3H
3457 *
3458 * ACPI DSDT switches which set is in use depending on various
3459 * factors.
3460 *
efa27145 3461 * TPACPI_FAN_WR_TPEC is also available and should be used to
56b6aeb0
HMH		 3462 * command the fan. The X31/X40/X41 seems to have 8 fan levels,
3463 * but the ACPI tables just mention level 7.
3464 */
3465
69ba91cb
HMH		 3466static enum fan_status_access_mode fan_status_access_mode;
3467static enum fan_control_access_mode fan_control_access_mode;
3468static enum fan_control_commands fan_control_commands;
78f81cc4 3469
778b4d74 3470static u8 fan_control_initial_status;
fe98a52c 3471static u8 fan_control_desired_level;
778b4d74 3472
25c68a33 3473static void fan_watchdog_fire(struct work_struct *ignored);
16663a87 3474static int fan_watchdog_maxinterval;
25c68a33 3475static DECLARE_DELAYED_WORK(fan_watchdog_task, fan_watchdog_fire);
16663a87 3476
56b6aeb0
HMH		 3477IBM_HANDLE(fans, ec, "FANS"); /* X31, X40, X41 */
3478IBM_HANDLE(gfan, ec, "GFAN", /* 570 */
3479 "\\FSPD", /* 600e/x, 770e, 770x */
3480 ); /* all others */
3481IBM_HANDLE(sfan, ec, "SFAN", /* 570 */
3482 "JFNS", /* 770x-JL */
3483 ); /* all others */
3484
fe98a52c
HMH		 3485/*
3486 * SYSFS fan layout: hwmon compatible (device)
3487 *
3488 * pwm*_enable:
3489 * 0: "disengaged" mode
3490 * 1: manual mode
3491 * 2: native EC "auto" mode (recommended, hardware default)
3492 *
3493 * pwm*: set speed in manual mode, ignored otherwise.
3494 * 0 is level 0; 255 is level 7. Intermediate points done with linear
3495 * interpolation.
3496 *
3497 * fan*_input: tachometer reading, RPM
3498 *
3499 *
3500 * SYSFS fan layout: extensions
3501 *
3502 * fan_watchdog (driver):
3503 * fan watchdog interval in seconds, 0 disables (default), max 120
3504 */
3505
3506/* sysfs fan pwm1_enable ----------------------------------------------- */
3507static ssize_t fan_pwm1_enable_show(struct device *dev,
3508 struct device_attribute *attr,
3509 char *buf)
3510{
3511 int res, mode;
3512 u8 status;
3513
3514 res = fan_get_status_safe(&status);
3515 if (res)
3516 return res;
3517
3518 if (unlikely(tp_features.fan_ctrl_status_undef)) {
3519 if (status != fan_control_initial_status) {
3520 tp_features.fan_ctrl_status_undef = 0;
3521 } else {
3522 /* Return most likely status. In fact, it
3523 * might be the only possible status */
3524 status = TP_EC_FAN_AUTO;
3525 }
3526 }
3527
3528 if (status & TP_EC_FAN_FULLSPEED) {
3529 mode = 0;
3530 } else if (status & TP_EC_FAN_AUTO) {
3531 mode = 2;
3532 } else
3533 mode = 1;
3534
3535 return snprintf(buf, PAGE_SIZE, "%d\n", mode);
3536}
3537
3538static ssize_t fan_pwm1_enable_store(struct device *dev,
3539 struct device_attribute *attr,
3540 const char *buf, size_t count)
3541{
3542 unsigned long t;
3543 int res, level;
3544
3545 if (parse_strtoul(buf, 2, &t))
3546 return -EINVAL;
3547
3548 switch (t) {
3549 case 0:
3550 level = TP_EC_FAN_FULLSPEED;
3551 break;
3552 case 1:
3553 level = TPACPI_FAN_LAST_LEVEL;
3554 break;
3555 case 2:
3556 level = TP_EC_FAN_AUTO;
3557 break;
3558 case 3:
3559 /* reserved for software-controlled auto mode */
3560 return -ENOSYS;
3561 default:
3562 return -EINVAL;
3563 }
3564
3565 res = fan_set_level_safe(level);
c573ddb9
HMH		 3566 if (res == -ENXIO)
3567 return -EINVAL;
3568 else if (res < 0)
fe98a52c
HMH		 3569 return res;
3570
3571 fan_watchdog_reset();
3572
3573 return count;
3574}
3575
3576static struct device_attribute dev_attr_fan_pwm1_enable =
3577 __ATTR(pwm1_enable, S_IWUSR | S_IRUGO,
3578 fan_pwm1_enable_show, fan_pwm1_enable_store);
3579
3580/* sysfs fan pwm1 ------------------------------------------------------ */
3581static ssize_t fan_pwm1_show(struct device *dev,
3582 struct device_attribute *attr,
3583 char *buf)
3584{
3585 int res;
3586 u8 status;
3587
3588 res = fan_get_status_safe(&status);
3589 if (res)
3590 return res;
3591
3592 if (unlikely(tp_features.fan_ctrl_status_undef)) {
3593 if (status != fan_control_initial_status) {
3594 tp_features.fan_ctrl_status_undef = 0;
3595 } else {
3596 status = TP_EC_FAN_AUTO;
3597 }
3598 }
3599
3600 if ((status &
3601 (TP_EC_FAN_AUTO | TP_EC_FAN_FULLSPEED)) != 0)
3602 status = fan_control_desired_level;
3603
3604 if (status > 7)
3605 status = 7;
3606
3607 return snprintf(buf, PAGE_SIZE, "%u\n", (status * 255) / 7);
3608}
3609
3610static ssize_t fan_pwm1_store(struct device *dev,
3611 struct device_attribute *attr,
3612 const char *buf, size_t count)
3613{
3614 unsigned long s;
3615 int rc;
3616 u8 status, newlevel;
3617
3618 if (parse_strtoul(buf, 255, &s))
3619 return -EINVAL;
3620
3621 /* scale down from 0-255 to 0-7 */
3622 newlevel = (s >> 5) & 0x07;
3623
3624 rc = mutex_lock_interruptible(&fan_mutex);
3625 if (rc < 0)
3626 return rc;
3627
3628 rc = fan_get_status(&status);
3629 if (!rc && (status &
3630 (TP_EC_FAN_AUTO | TP_EC_FAN_FULLSPEED)) == 0) {
3631 rc = fan_set_level(newlevel);
c573ddb9
HMH		 3632 if (rc == -ENXIO)
3633 rc = -EINVAL;
3634 else if (!rc) {
fe98a52c 3635 fan_update_desired_level(newlevel);
ca4ac2f4
HMH		 3636 fan_watchdog_reset();
3637 }
fe98a52c
HMH		 3638 }
3639
3640 mutex_unlock(&fan_mutex);
3641 return (rc)? rc : count;
3642}
3643
3644static struct device_attribute dev_attr_fan_pwm1 =
3645 __ATTR(pwm1, S_IWUSR | S_IRUGO,
3646 fan_pwm1_show, fan_pwm1_store);
3647
3648/* sysfs fan fan1_input ------------------------------------------------ */
3649static ssize_t fan_fan1_input_show(struct device *dev,
3650 struct device_attribute *attr,
3651 char *buf)
3652{
3653 int res;
3654 unsigned int speed;
3655
3656 res = fan_get_speed(&speed);
3657 if (res < 0)
3658 return res;
3659
3660 return snprintf(buf, PAGE_SIZE, "%u\n", speed);
3661}
3662
3663static struct device_attribute dev_attr_fan_fan1_input =
3664 __ATTR(fan1_input, S_IRUGO,
3665 fan_fan1_input_show, NULL);
3666
3667/* sysfs fan fan_watchdog (driver) ------------------------------------- */
3668static ssize_t fan_fan_watchdog_show(struct device_driver *drv,
3669 char *buf)
3670{
3671 return snprintf(buf, PAGE_SIZE, "%u\n", fan_watchdog_maxinterval);
3672}
3673
3674static ssize_t fan_fan_watchdog_store(struct device_driver *drv,
3675 const char *buf, size_t count)
3676{
3677 unsigned long t;
3678
3679 if (parse_strtoul(buf, 120, &t))
3680 return -EINVAL;
3681
ecf2a80a
HMH		 3682 if (!fan_control_allowed)
3683 return -EPERM;
3684
fe98a52c
HMH		 3685 fan_watchdog_maxinterval = t;
3686 fan_watchdog_reset();
3687
3688 return count;
3689}
3690
3691static DRIVER_ATTR(fan_watchdog, S_IWUSR | S_IRUGO,
3692 fan_fan_watchdog_show, fan_fan_watchdog_store);
3693
3694/* --------------------------------------------------------------------- */
3695static struct attribute *fan_attributes[] = {
3696 &dev_attr_fan_pwm1_enable.attr, &dev_attr_fan_pwm1.attr,
3697 &dev_attr_fan_fan1_input.attr,
3698 NULL
3699};
3700
3701static const struct attribute_group fan_attr_group = {
3702 .attrs = fan_attributes,
3703};
3704
a5763f22 3705static int __init fan_init(struct ibm_init_struct *iibm)
78f81cc4 3706{
fe98a52c
HMH		 3707 int rc;
3708
fe08bc4b
HMH		 3709 vdbg_printk(TPACPI_DBG_INIT, "initializing fan subdriver\n");
3710
40ca9fdf 3711 mutex_init(&fan_mutex);
efa27145
HMH		 3712 fan_status_access_mode = TPACPI_FAN_NONE;
3713 fan_control_access_mode = TPACPI_FAN_WR_NONE;
69ba91cb 3714 fan_control_commands = 0;
16663a87 3715 fan_watchdog_maxinterval = 0;
d8fd94d9 3716 tp_features.fan_ctrl_status_undef = 0;
fe98a52c 3717 fan_control_desired_level = 7;
78f81cc4 3718
8d376cd6
HMH		 3719 IBM_ACPIHANDLE_INIT(fans);
3720 IBM_ACPIHANDLE_INIT(gfan);
3721 IBM_ACPIHANDLE_INIT(sfan);
5fba344c 3722
78f81cc4
BD		 3723 if (gfan_handle) {
3724 /* 570, 600e/x, 770e, 770x */
efa27145 3725 fan_status_access_mode = TPACPI_FAN_RD_ACPI_GFAN;
69ba91cb
HMH		 3726 } else {
3727 /* all other ThinkPads: note that even old-style
3728 * ThinkPad ECs supports the fan control register */
778b4d74
HMH		 3729 if (likely(acpi_ec_read(fan_status_offset,
3730 &fan_control_initial_status))) {
efa27145 3731 fan_status_access_mode = TPACPI_FAN_RD_TPEC;
778b4d74
HMH		 3732
3733 /* In some ThinkPads, neither the EC nor the ACPI
3734 * DSDT initialize the fan status, and it ends up
3735 * being set to 0x07 when it *could* be either
3736 * 0x07 or 0x80.
3737 *
3738 * Enable for TP-1Y (T43), TP-78 (R51e),
3739 * TP-76 (R52), TP-70 (T43, R52), which are known
3740 * to be buggy. */
d5a2f2f1
HMH		 3741 if (fan_control_initial_status == 0x07) {
3742 switch (thinkpad_id.ec_model) {
3743 case 0x5931: /* TP-1Y */
3744 case 0x3837: /* TP-78 */
3745 case 0x3637: /* TP-76 */
3746 case 0x3037: /* TP-70 */
3747 printk(IBM_NOTICE
3748 "fan_init: initial fan status is "
3749 "unknown, assuming it is in auto "
3750 "mode\n");
3751 tp_features.fan_ctrl_status_undef = 1;
3752 ;;
3753 }
778b4d74 3754 }
69ba91cb
HMH		 3755 } else {
3756 printk(IBM_ERR
3757 "ThinkPad ACPI EC access misbehaving, "
3758 "fan status and control unavailable\n");
5fba344c 3759 return 1;
69ba91cb
HMH		 3760 }
3761 }
78f81cc4 3762
69ba91cb
HMH		 3763 if (sfan_handle) {
3764 /* 570, 770x-JL */
efa27145 3765 fan_control_access_mode = TPACPI_FAN_WR_ACPI_SFAN;
1c6a334e 3766 fan_control_commands |=
efa27145 3767 TPACPI_FAN_CMD_LEVEL | TPACPI_FAN_CMD_ENABLE;
78f81cc4 3768 } else {
69ba91cb
HMH		 3769 if (!gfan_handle) {
3770 /* gfan without sfan means no fan control */
3771 /* all other models implement TP EC 0x2f control */
3772
3773 if (fans_handle) {
a8b7a662 3774 /* X31, X40, X41 */
69ba91cb 3775 fan_control_access_mode =
efa27145 3776 TPACPI_FAN_WR_ACPI_FANS;
69ba91cb 3777 fan_control_commands |=
efa27145
HMH		 3778 TPACPI_FAN_CMD_SPEED |
3779 TPACPI_FAN_CMD_LEVEL |
3780 TPACPI_FAN_CMD_ENABLE;
69ba91cb 3781 } else {
efa27145 3782 fan_control_access_mode = TPACPI_FAN_WR_TPEC;
a12095c2 3783 fan_control_commands |=
efa27145
HMH		 3784 TPACPI_FAN_CMD_LEVEL |
3785 TPACPI_FAN_CMD_ENABLE;
69ba91cb
HMH		 3786 }
3787 }
3788 }
3789
fe08bc4b
HMH		 3790 vdbg_printk(TPACPI_DBG_INIT, "fan is %s, modes %d, %d\n",
3791 str_supported(fan_status_access_mode != TPACPI_FAN_NONE ||
3792 fan_control_access_mode != TPACPI_FAN_WR_NONE),
3793 fan_status_access_mode, fan_control_access_mode);
3794
ecf2a80a
HMH		 3795 /* fan control master switch */
3796 if (!fan_control_allowed) {
3797 fan_control_access_mode = TPACPI_FAN_WR_NONE;
3798 fan_control_commands = 0;
3799 dbg_printk(TPACPI_DBG_INIT,
3800 "fan control features disabled by parameter\n");
3801 }
3802
fe98a52c
HMH		 3803 /* update fan_control_desired_level */
3804 if (fan_status_access_mode != TPACPI_FAN_NONE)
3805 fan_get_status_safe(NULL);
3806
3807 if (fan_status_access_mode != TPACPI_FAN_NONE ||
3808 fan_control_access_mode != TPACPI_FAN_WR_NONE) {
3809 rc = sysfs_create_group(&tpacpi_pdev->dev.kobj,
3810 &fan_attr_group);
3811 if (!(rc < 0))
3812 rc = driver_create_file(&tpacpi_pdriver.driver,
3813 &driver_attr_fan_watchdog);
3814 if (rc < 0)
3815 return rc;
3816 return 0;
3817 } else
3818 return 1;
3819}
3820
3821/*
3822 * Call with fan_mutex held
3823 */
3824static void fan_update_desired_level(u8 status)
3825{
3826 if ((status &
3827 (TP_EC_FAN_AUTO | TP_EC_FAN_FULLSPEED)) == 0) {
3828 if (status > 7)
3829 fan_control_desired_level = 7;
3830 else
3831 fan_control_desired_level = status;
3832 }
69ba91cb 3833}
78f81cc4 3834
c52f0aa5 3835static int fan_get_status(u8 *status)
78f81cc4 3836{
c52f0aa5 3837 u8 s;
78f81cc4 3838
a8b7a662 3839 /* TODO:
efa27145 3840 * Add TPACPI_FAN_RD_ACPI_FANS ? */
a8b7a662 3841
3ef8a609 3842 switch (fan_status_access_mode) {
efa27145 3843 case TPACPI_FAN_RD_ACPI_GFAN:
78f81cc4 3844 /* 570, 600e/x, 770e, 770x */
c52f0aa5
HMH		 3845
3846 if (unlikely(!acpi_evalf(gfan_handle, &s, NULL, "d")))
1da177e4 3847 return -EIO;
78f81cc4 3848
c52f0aa5
HMH		 3849 if (likely(status))
3850 *status = s & 0x07;
3ef8a609
HMH		 3851
3852 break;
3853
efa27145 3854 case TPACPI_FAN_RD_TPEC:
78f81cc4 3855 /* all except 570, 600e/x, 770e, 770x */
c52f0aa5 3856 if (unlikely(!acpi_ec_read(fan_status_offset, &s)))
3ef8a609 3857 return -EIO;
78f81cc4 3858
c52f0aa5
HMH		 3859 if (likely(status))
3860 *status = s;
3861
3862 break;
3863
3864 default:
3865 return -ENXIO;
78f81cc4
BD		 3866 }
3867
c52f0aa5
HMH		 3868 return 0;
3869}
3870
fe98a52c
HMH		 3871static int fan_get_status_safe(u8 *status)
3872{
3873 int rc;
3874 u8 s;
3875
3876 rc = mutex_lock_interruptible(&fan_mutex);
3877 if (rc < 0)
3878 return rc;
3879 rc = fan_get_status(&s);
3880 if (!rc)
3881 fan_update_desired_level(s);
3882 mutex_unlock(&fan_mutex);
3883
3884 if (status)
3885 *status = s;
3886
3887 return rc;
3888}
3889
56b6aeb0
HMH		 3890static void fan_exit(void)
3891{
99fba3f8 3892 vdbg_printk(TPACPI_DBG_EXIT, "cancelling any pending fan watchdog tasks\n");
fe98a52c
HMH		 3893
3894 /* FIXME: can we really do this unconditionally? */
3895 sysfs_remove_group(&tpacpi_pdev->dev.kobj, &fan_attr_group);
3896 driver_remove_file(&tpacpi_pdriver.driver, &driver_attr_fan_watchdog);
3897
56b6aeb0
HMH		 3898 cancel_delayed_work(&fan_watchdog_task);
3899 flush_scheduled_work();
3900}
3901
c52f0aa5
HMH		 3902static int fan_get_speed(unsigned int *speed)
3903{
3904 u8 hi, lo;
3905
3906 switch (fan_status_access_mode) {
efa27145 3907 case TPACPI_FAN_RD_TPEC:
78f81cc4 3908 /* all except 570, 600e/x, 770e, 770x */
3ef8a609
HMH		 3909 if (unlikely(!acpi_ec_read(fan_rpm_offset, &lo) ||
3910 !acpi_ec_read(fan_rpm_offset + 1, &hi)))
3911 return -EIO;
3ef8a609 3912
c52f0aa5
HMH		 3913 if (likely(speed))
3914 *speed = (hi << 8) | lo;
3915
3916 break;
3917
3918 default:
3919 return -ENXIO;
3920 }
3921
3922 return 0;
3923}
3924
56b6aeb0 3925static void fan_watchdog_fire(struct work_struct *ignored)
16663a87 3926{
99fba3f8
HMH		 3927 int rc;
3928
8fef502e
HMH		 3929 if (tpacpi_lifecycle != TPACPI_LIFE_RUNNING)
3930 return;
3931
56b6aeb0 3932 printk(IBM_NOTICE "fan watchdog: enabling fan\n");
99fba3f8
HMH		 3933 rc = fan_set_enable();
3934 if (rc < 0) {
3935 printk(IBM_ERR "fan watchdog: error %d while enabling fan, "
3936 "will try again later...\n", -rc);
56b6aeb0
HMH		 3937 /* reschedule for later */
3938 fan_watchdog_reset();
3939 }
16663a87
HMH		 3940}
3941
3942static void fan_watchdog_reset(void)
3943{
94954cc6 3944 static int fan_watchdog_active;
16663a87 3945
4985cd0a
HMH		 3946 if (fan_control_access_mode == TPACPI_FAN_WR_NONE)
3947 return;
3948
16663a87
HMH		 3949 if (fan_watchdog_active)
3950 cancel_delayed_work(&fan_watchdog_task);
3951
8fef502e
HMH		 3952 if (fan_watchdog_maxinterval > 0 &&
3953 tpacpi_lifecycle != TPACPI_LIFE_EXITING) {
16663a87
HMH		 3954 fan_watchdog_active = 1;
3955 if (!schedule_delayed_work(&fan_watchdog_task,
3956 msecs_to_jiffies(fan_watchdog_maxinterval
3957 * 1000))) {
3958 printk(IBM_ERR "failed to schedule the fan watchdog, "
3959 "watchdog will not trigger\n");
3960 }
3961 } else
3962 fan_watchdog_active = 0;
3963}
3964
18ad7996 3965static int fan_set_level(int level)
78f81cc4 3966{
ecf2a80a
HMH		 3967 if (!fan_control_allowed)
3968 return -EPERM;
3969
18ad7996 3970 switch (fan_control_access_mode) {
efa27145 3971 case TPACPI_FAN_WR_ACPI_SFAN:
18ad7996 3972 if (level >= 0 && level <= 7) {
fe98a52c 3973 if (!acpi_evalf(sfan_handle, NULL, NULL, "vd", level))
78f81cc4 3974 return -EIO;
18ad7996
HMH		 3975 } else
3976 return -EINVAL;
3977 break;
3978
efa27145
HMH		 3979 case TPACPI_FAN_WR_ACPI_FANS:
3980 case TPACPI_FAN_WR_TPEC:
3981 if ((level != TP_EC_FAN_AUTO) &&
3982 (level != TP_EC_FAN_FULLSPEED) &&
a12095c2
HMH		 3983 ((level < 0) || (level > 7)))
3984 return -EINVAL;
3985
eaa7571b
HMH		 3986 /* safety net should the EC not support AUTO
3987 * or FULLSPEED mode bits and just ignore them */
3988 if (level & TP_EC_FAN_FULLSPEED)
3989 level |= 7; /* safety min speed 7 */
3990 else if (level & TP_EC_FAN_FULLSPEED)
3991 level |= 4; /* safety min speed 4 */
3992
fe98a52c 3993 if (!acpi_ec_write(fan_status_offset, level))
a12095c2 3994 return -EIO;
778b4d74 3995 else
d8fd94d9 3996 tp_features.fan_ctrl_status_undef = 0;
a12095c2
HMH		 3997 break;
3998
18ad7996
HMH		 3999 default:
4000 return -ENXIO;
4001 }
4002 return 0;
4003}
4004
fe98a52c
HMH		 4005static int fan_set_level_safe(int level)
4006{
4007 int rc;
4008
ecf2a80a
HMH		 4009 if (!fan_control_allowed)
4010 return -EPERM;
4011
fe98a52c
HMH		 4012 rc = mutex_lock_interruptible(&fan_mutex);
4013 if (rc < 0)
4014 return rc;
4015
4016 if (level == TPACPI_FAN_LAST_LEVEL)
4017 level = fan_control_desired_level;
4018
4019 rc = fan_set_level(level);
4020 if (!rc)
4021 fan_update_desired_level(level);
4022
4023 mutex_unlock(&fan_mutex);
4024 return rc;
4025}
4026
18ad7996
HMH		 4027static int fan_set_enable(void)
4028{
1c6a334e
HMH		 4029 u8 s;
4030 int rc;
4031
ecf2a80a
HMH		 4032 if (!fan_control_allowed)
4033 return -EPERM;
4034
40ca9fdf
HMH		 4035 rc = mutex_lock_interruptible(&fan_mutex);
4036 if (rc < 0)
4037 return rc;
4038
18ad7996 4039 switch (fan_control_access_mode) {
efa27145
HMH		 4040 case TPACPI_FAN_WR_ACPI_FANS:
4041 case TPACPI_FAN_WR_TPEC:
40ca9fdf
HMH		 4042 rc = fan_get_status(&s);
4043 if (rc < 0)
4044 break;
1c6a334e
HMH		 4045
4046 /* Don't go out of emergency fan mode */
eaa7571b
HMH		 4047 if (s != 7) {
4048 s &= 0x07;
4049 s |= TP_EC_FAN_AUTO | 4; /* min fan speed 4 */
4050 }
1c6a334e
HMH		 4051
4052 if (!acpi_ec_write(fan_status_offset, s))
40ca9fdf
HMH		 4053 rc = -EIO;
4054 else {
d8fd94d9 4055 tp_features.fan_ctrl_status_undef = 0;
40ca9fdf
HMH		 4056 rc = 0;
4057 }
1c6a334e
HMH		 4058 break;
4059
efa27145 4060 case TPACPI_FAN_WR_ACPI_SFAN:
40ca9fdf
HMH		 4061 rc = fan_get_status(&s);
4062 if (rc < 0)
4063 break;
1c6a334e
HMH		 4064
4065 s &= 0x07;
4066
4067 /* Set fan to at least level 4 */
eaa7571b 4068 s |= 4;
1c6a334e
HMH		 4069
4070 if (!acpi_evalf(sfan_handle, NULL, NULL, "vd", s))
40ca9fdf
HMH		 4071 rc= -EIO;
4072 else
4073 rc = 0;
18ad7996
HMH		 4074 break;
4075
4076 default:
40ca9fdf 4077 rc = -ENXIO;
18ad7996 4078 }
40ca9fdf
HMH		 4079
4080 mutex_unlock(&fan_mutex);
4081 return rc;
18ad7996
HMH		 4082}
4083
4084static int fan_set_disable(void)
4085{
40ca9fdf
HMH		 4086 int rc;
4087
ecf2a80a
HMH		 4088 if (!fan_control_allowed)
4089 return -EPERM;
4090
40ca9fdf
HMH		 4091 rc = mutex_lock_interruptible(&fan_mutex);
4092 if (rc < 0)
4093 return rc;
4094
4095 rc = 0;
18ad7996 4096 switch (fan_control_access_mode) {
efa27145
HMH		 4097 case TPACPI_FAN_WR_ACPI_FANS:
4098 case TPACPI_FAN_WR_TPEC:
18ad7996 4099 if (!acpi_ec_write(fan_status_offset, 0x00))
40ca9fdf 4100 rc = -EIO;
fe98a52c
HMH		 4101 else {
4102 fan_control_desired_level = 0;
d8fd94d9 4103 tp_features.fan_ctrl_status_undef = 0;
fe98a52c 4104 }
18ad7996
HMH		 4105 break;
4106
efa27145 4107 case TPACPI_FAN_WR_ACPI_SFAN:
1c6a334e 4108 if (!acpi_evalf(sfan_handle, NULL, NULL, "vd", 0x00))
40ca9fdf 4109 rc = -EIO;
fe98a52c
HMH		 4110 else
4111 fan_control_desired_level = 0;
1c6a334e
HMH		 4112 break;
4113
18ad7996 4114 default:
40ca9fdf 4115 rc = -ENXIO;
18ad7996 4116 }
40ca9fdf 4117
fe98a52c 4118
40ca9fdf
HMH		 4119 mutex_unlock(&fan_mutex);
4120 return rc;
56b6aeb0
HMH		 4121}
4122
4123static int fan_set_speed(int speed)
4124{
40ca9fdf
HMH		 4125 int rc;
4126
ecf2a80a
HMH		 4127 if (!fan_control_allowed)
4128 return -EPERM;
4129
40ca9fdf
HMH		 4130 rc = mutex_lock_interruptible(&fan_mutex);
4131 if (rc < 0)
4132 return rc;
4133
4134 rc = 0;
56b6aeb0 4135 switch (fan_control_access_mode) {
efa27145 4136 case TPACPI_FAN_WR_ACPI_FANS:
56b6aeb0
HMH		 4137 if (speed >= 0 && speed <= 65535) {
4138 if (!acpi_evalf(fans_handle, NULL, NULL, "vddd",
4139 speed, speed, speed))
40ca9fdf 4140 rc = -EIO;
56b6aeb0 4141 } else
40ca9fdf 4142 rc = -EINVAL;
56b6aeb0
HMH		 4143 break;
4144
4145 default:
40ca9fdf 4146 rc = -ENXIO;
56b6aeb0 4147 }
40ca9fdf
HMH		 4148
4149 mutex_unlock(&fan_mutex);
4150 return rc;
56b6aeb0
HMH		 4151}
4152
4153static int fan_read(char *p)
4154{
4155 int len = 0;
4156 int rc;
4157 u8 status;
4158 unsigned int speed = 0;
4159
4160 switch (fan_status_access_mode) {
efa27145 4161 case TPACPI_FAN_RD_ACPI_GFAN:
56b6aeb0 4162 /* 570, 600e/x, 770e, 770x */
fe98a52c 4163 if ((rc = fan_get_status_safe(&status)) < 0)
56b6aeb0
HMH		 4164 return rc;
4165
4166 len += sprintf(p + len, "status:\t\t%s\n"
4167 "level:\t\t%d\n",
4168 (status != 0) ? "enabled" : "disabled", status);
4169 break;
4170
efa27145 4171 case TPACPI_FAN_RD_TPEC:
56b6aeb0 4172 /* all except 570, 600e/x, 770e, 770x */
fe98a52c 4173 if ((rc = fan_get_status_safe(&status)) < 0)
56b6aeb0
HMH		 4174 return rc;
4175
d8fd94d9 4176 if (unlikely(tp_features.fan_ctrl_status_undef)) {
56b6aeb0 4177 if (status != fan_control_initial_status)
d8fd94d9 4178 tp_features.fan_ctrl_status_undef = 0;
56b6aeb0
HMH		 4179 else
4180 /* Return most likely status. In fact, it
4181 * might be the only possible status */
efa27145 4182 status = TP_EC_FAN_AUTO;
56b6aeb0
HMH		 4183 }
4184
4185 len += sprintf(p + len, "status:\t\t%s\n",
4186 (status != 0) ? "enabled" : "disabled");
4187
56b6aeb0
HMH		 4188 if ((rc = fan_get_speed(&speed)) < 0)
4189 return rc;
4190
4191 len += sprintf(p + len, "speed:\t\t%d\n", speed);
4192
efa27145 4193 if (status & TP_EC_FAN_FULLSPEED)
56b6aeb0
HMH		 4194 /* Disengaged mode takes precedence */
4195 len += sprintf(p + len, "level:\t\tdisengaged\n");
efa27145 4196 else if (status & TP_EC_FAN_AUTO)
56b6aeb0
HMH		 4197 len += sprintf(p + len, "level:\t\tauto\n");
4198 else
4199 len += sprintf(p + len, "level:\t\t%d\n", status);
4200 break;
4201
efa27145 4202 case TPACPI_FAN_NONE:
56b6aeb0
HMH		 4203 default:
4204 len += sprintf(p + len, "status:\t\tnot supported\n");
4205 }
4206
efa27145 4207 if (fan_control_commands & TPACPI_FAN_CMD_LEVEL) {
56b6aeb0
HMH		 4208 len += sprintf(p + len, "commands:\tlevel <level>");
4209
4210 switch (fan_control_access_mode) {
efa27145 4211 case TPACPI_FAN_WR_ACPI_SFAN:
56b6aeb0
HMH		 4212 len += sprintf(p + len, " (<level> is 0-7)\n");
4213 break;
4214
4215 default:
4216 len += sprintf(p + len, " (<level> is 0-7, "
fe98a52c 4217 "auto, disengaged, full-speed)\n");
56b6aeb0
HMH		 4218 break;
4219 }
4220 }
18ad7996 4221
efa27145 4222 if (fan_control_commands & TPACPI_FAN_CMD_ENABLE)
56b6aeb0
HMH		 4223 len += sprintf(p + len, "commands:\tenable, disable\n"
4224 "commands:\twatchdog <timeout> (<timeout> is 0 (off), "
4225 "1-120 (seconds))\n");
1da177e4 4226
efa27145 4227 if (fan_control_commands & TPACPI_FAN_CMD_SPEED)
56b6aeb0
HMH		 4228 len += sprintf(p + len, "commands:\tspeed <speed>"
4229 " (<speed> is 0-65535)\n");
4230
4231 return len;
78f81cc4
BD		 4232}
4233
18ad7996
HMH		 4234static int fan_write_cmd_level(const char *cmd, int *rc)
4235{
4236 int level;
4237
a12095c2 4238 if (strlencmp(cmd, "level auto") == 0)
efa27145 4239 level = TP_EC_FAN_AUTO;
fe98a52c
HMH		 4240 else if ((strlencmp(cmd, "level disengaged") == 0) |
4241 (strlencmp(cmd, "level full-speed") == 0))
efa27145 4242 level = TP_EC_FAN_FULLSPEED;
a12095c2 4243 else if (sscanf(cmd, "level %d", &level) != 1)
18ad7996
HMH		 4244 return 0;
4245
fe98a52c 4246 if ((*rc = fan_set_level_safe(level)) == -ENXIO)
18ad7996
HMH		 4247 printk(IBM_ERR "level command accepted for unsupported "
4248 "access mode %d", fan_control_access_mode);
4249
4250 return 1;
4251}
4252
4253static int fan_write_cmd_enable(const char *cmd, int *rc)
4254{
4255 if (strlencmp(cmd, "enable") != 0)
4256 return 0;
4257
4258 if ((*rc = fan_set_enable()) == -ENXIO)
4259 printk(IBM_ERR "enable command accepted for unsupported "
4260 "access mode %d", fan_control_access_mode);
4261
4262 return 1;
4263}
4264
4265static int fan_write_cmd_disable(const char *cmd, int *rc)
4266{
4267 if (strlencmp(cmd, "disable") != 0)
4268 return 0;
4269
4270 if ((*rc = fan_set_disable()) == -ENXIO)
4271 printk(IBM_ERR "disable command accepted for unsupported "
4272 "access mode %d", fan_control_access_mode);
4273
4274 return 1;
4275}
4276
4277static int fan_write_cmd_speed(const char *cmd, int *rc)
4278{
4279 int speed;
4280
a8b7a662
HMH		 4281 /* TODO:
4282 * Support speed <low> <medium> <high> ? */
4283
18ad7996
HMH		 4284 if (sscanf(cmd, "speed %d", &speed) != 1)
4285 return 0;
4286
4287 if ((*rc = fan_set_speed(speed)) == -ENXIO)
4288 printk(IBM_ERR "speed command accepted for unsupported "
4289 "access mode %d", fan_control_access_mode);
4290
4291 return 1;
4292}
4293
16663a87
HMH		 4294static int fan_write_cmd_watchdog(const char *cmd, int *rc)
4295{
4296 int interval;
4297
4298 if (sscanf(cmd, "watchdog %d", &interval) != 1)
4299 return 0;
4300
4301 if (interval < 0 || interval > 120)
4302 *rc = -EINVAL;
4303 else
4304 fan_watchdog_maxinterval = interval;
4305
4306 return 1;
4307}
4308
18ad7996
HMH		 4309static int fan_write(char *buf)
4310{
4311 char *cmd;
4312 int rc = 0;
4313
4314 while (!rc && (cmd = next_cmd(&buf))) {
efa27145 4315 if (!((fan_control_commands & TPACPI_FAN_CMD_LEVEL) &&
18ad7996 4316 fan_write_cmd_level(cmd, &rc)) &&
efa27145 4317 !((fan_control_commands & TPACPI_FAN_CMD_ENABLE) &&
18ad7996 4318 (fan_write_cmd_enable(cmd, &rc) ||
16663a87
HMH		 4319 fan_write_cmd_disable(cmd, &rc) ||
4320 fan_write_cmd_watchdog(cmd, &rc))) &&
efa27145 4321 !((fan_control_commands & TPACPI_FAN_CMD_SPEED) &&
18ad7996
HMH		 4322 fan_write_cmd_speed(cmd, &rc))
4323 )
4324 rc = -EINVAL;
16663a87
HMH		 4325 else if (!rc)
4326 fan_watchdog_reset();
18ad7996
HMH		 4327 }
4328
4329 return rc;
4330}
4331
a5763f22
HMH		 4332static struct ibm_struct fan_driver_data = {
4333 .name = "fan",
4334 .read = fan_read,
4335 .write = fan_write,
4336 .exit = fan_exit,
a5763f22
HMH		 4337};
4338
56b6aeb0
HMH		 4339/****************************************************************************
4340 ****************************************************************************
4341 *
4342 * Infrastructure
4343 *
4344 ****************************************************************************
4345 ****************************************************************************/
4346
4347/* /proc support */
94954cc6 4348static struct proc_dir_entry *proc_dir;
16663a87 4349
56b6aeb0 4350/* Subdriver registry */
a5763f22
HMH		 4351static LIST_HEAD(tpacpi_all_drivers);
4352
1da177e4 4353
56b6aeb0
HMH		 4354/*
4355 * Module and infrastructure proble, init and exit handling
4356 */
1da177e4 4357
fe08bc4b 4358#ifdef CONFIG_THINKPAD_ACPI_DEBUG
a5763f22 4359static const char * __init str_supported(int is_supported)
fe08bc4b 4360{
a5763f22 4361 static char text_unsupported[] __initdata = "not supported";
fe08bc4b 4362
a5763f22 4363 return (is_supported)? &text_unsupported[4] : &text_unsupported[0];
fe08bc4b
HMH		 4364}
4365#endif /* CONFIG_THINKPAD_ACPI_DEBUG */
4366
a5763f22 4367static int __init ibm_init(struct ibm_init_struct *iibm)
1da177e4
LT		 4368{
4369 int ret;
a5763f22 4370 struct ibm_struct *ibm = iibm->data;
1da177e4
LT		 4371 struct proc_dir_entry *entry;
4372
a5763f22
HMH		 4373 BUG_ON(ibm == NULL);
4374
4375 INIT_LIST_HEAD(&ibm->all_drivers);
4376
92641177 4377 if (ibm->flags.experimental && !experimental)
1da177e4
LT		 4378 return 0;
4379
fe08bc4b
HMH		 4380 dbg_printk(TPACPI_DBG_INIT,
4381 "probing for %s\n", ibm->name);
4382
a5763f22
HMH		 4383 if (iibm->init) {
4384 ret = iibm->init(iibm);
5fba344c
HMH		 4385 if (ret > 0)
4386 return 0; /* probe failed */
4387 if (ret)
1da177e4 4388 return ret;
a5763f22 4389
92641177 4390 ibm->flags.init_called = 1;
1da177e4
LT		 4391 }
4392
8d376cd6
HMH		 4393 if (ibm->acpi) {
4394 if (ibm->acpi->hid) {
4395 ret = register_tpacpi_subdriver(ibm);
4396 if (ret)
4397 goto err_out;
4398 }
5fba344c 4399
8d376cd6
HMH		 4400 if (ibm->acpi->notify) {
4401 ret = setup_acpi_notify(ibm);
4402 if (ret == -ENODEV) {
4403 printk(IBM_NOTICE "disabling subdriver %s\n",
4404 ibm->name);
4405 ret = 0;
4406 goto err_out;
4407 }
4408 if (ret < 0)
4409 goto err_out;
5fba344c 4410 }
5fba344c
HMH		 4411 }
4412
fe08bc4b
HMH		 4413 dbg_printk(TPACPI_DBG_INIT,
4414 "%s installed\n", ibm->name);
4415
78f81cc4
BD		 4416 if (ibm->read) {
4417 entry = create_proc_entry(ibm->name,
4418 S_IFREG | S_IRUGO | S_IWUSR,
4419 proc_dir);
4420 if (!entry) {
4421 printk(IBM_ERR "unable to create proc entry %s\n",
4422 ibm->name);
5fba344c
HMH		 4423 ret = -ENODEV;
4424 goto err_out;
78f81cc4
BD		 4425 }
4426 entry->owner = THIS_MODULE;
4427 entry->data = ibm;
8d376cd6 4428 entry->read_proc = &dispatch_procfs_read;
78f81cc4 4429 if (ibm->write)
8d376cd6 4430 entry->write_proc = &dispatch_procfs_write;
92641177 4431 ibm->flags.proc_created = 1;
78f81cc4 4432 }
1da177e4 4433
a5763f22
HMH		 4434 list_add_tail(&ibm->all_drivers, &tpacpi_all_drivers);
4435
1da177e4 4436 return 0;
5fba344c
HMH		 4437
4438err_out:
fe08bc4b
HMH		 4439 dbg_printk(TPACPI_DBG_INIT,
4440 "%s: at error exit path with result %d\n",
4441 ibm->name, ret);
4442
5fba344c
HMH		 4443 ibm_exit(ibm);
4444 return (ret < 0)? ret : 0;
1da177e4
LT		 4445}
4446
4447static void ibm_exit(struct ibm_struct *ibm)
4448{
fe08bc4b 4449 dbg_printk(TPACPI_DBG_EXIT, "removing %s\n", ibm->name);
a5763f22
HMH		 4450
4451 list_del_init(&ibm->all_drivers);
4452
8d376cd6 4453 if (ibm->flags.acpi_notify_installed) {
fe08bc4b
HMH		 4454 dbg_printk(TPACPI_DBG_EXIT,
4455 "%s: acpi_remove_notify_handler\n", ibm->name);
8d376cd6
HMH		 4456 BUG_ON(!ibm->acpi);
4457 acpi_remove_notify_handler(*ibm->acpi->handle,
4458 ibm->acpi->type,
4459 dispatch_acpi_notify);
4460 ibm->flags.acpi_notify_installed = 0;
4461 ibm->flags.acpi_notify_installed = 0;
5fba344c 4462 }
1da177e4 4463
92641177 4464 if (ibm->flags.proc_created) {
fe08bc4b
HMH		 4465 dbg_printk(TPACPI_DBG_EXIT,
4466 "%s: remove_proc_entry\n", ibm->name);
1da177e4 4467 remove_proc_entry(ibm->name, proc_dir);
92641177 4468 ibm->flags.proc_created = 0;
5fba344c 4469 }
1da177e4 4470
8d376cd6 4471 if (ibm->flags.acpi_driver_registered) {
fe08bc4b
HMH		 4472 dbg_printk(TPACPI_DBG_EXIT,
4473 "%s: acpi_bus_unregister_driver\n", ibm->name);
8d376cd6
HMH		 4474 BUG_ON(!ibm->acpi);
4475 acpi_bus_unregister_driver(ibm->acpi->driver);
4476 kfree(ibm->acpi->driver);
4477 ibm->acpi->driver = NULL;
4478 ibm->flags.acpi_driver_registered = 0;
5fba344c
HMH		 4479 }
4480
92641177 4481 if (ibm->flags.init_called && ibm->exit) {
5fba344c 4482 ibm->exit();
92641177 4483 ibm->flags.init_called = 0;
1da177e4 4484 }
a5763f22
HMH		 4485
4486 dbg_printk(TPACPI_DBG_INIT, "finished removing %s\n", ibm->name);
1da177e4
LT		 4487}
4488
56b6aeb0
HMH		 4489/* Probing */
4490
d5a2f2f1 4491static void __init get_thinkpad_model_data(struct thinkpad_id_data *tp)
1da177e4 4492{
56b6aeb0
HMH		 4493 struct dmi_device *dev = NULL;
4494 char ec_fw_string[18];
1da177e4 4495
d5a2f2f1
HMH		 4496 if (!tp)
4497 return;
4498
4499 memset(tp, 0, sizeof(*tp));
4500
4501 if (dmi_name_in_vendors("IBM"))
4502 tp->vendor = PCI_VENDOR_ID_IBM;
4503 else if (dmi_name_in_vendors("LENOVO"))
4504 tp->vendor = PCI_VENDOR_ID_LENOVO;
4505 else
4506 return;
4507
4508 tp->bios_version_str = kstrdup(dmi_get_system_info(DMI_BIOS_VERSION),
4509 GFP_KERNEL);
4510 if (!tp->bios_version_str)
4511 return;
4512 tp->bios_model = tp->bios_version_str[0]
4513 | (tp->bios_version_str[1] << 8);
4514
56b6aeb0
HMH		 4515 /*
4516 * ThinkPad T23 or newer, A31 or newer, R50e or newer,
4517 * X32 or newer, all Z series; Some models must have an
4518 * up-to-date BIOS or they will not be detected.
4519 *
4520 * See http://thinkwiki.org/wiki/List_of_DMI_IDs
4521 */
4522 while ((dev = dmi_find_device(DMI_DEV_TYPE_OEM_STRING, NULL, dev))) {
4523 if (sscanf(dev->name,
4524 "IBM ThinkPad Embedded Controller -[%17c",
4525 ec_fw_string) == 1) {
4526 ec_fw_string[sizeof(ec_fw_string) - 1] = 0;
4527 ec_fw_string[strcspn(ec_fw_string, " ]")] = 0;
d5a2f2f1
HMH		 4528
4529 tp->ec_version_str = kstrdup(ec_fw_string, GFP_KERNEL);
4530 tp->ec_model = ec_fw_string[0]
4531 | (ec_fw_string[1] << 8);
4532 break;
78f81cc4 4533 }
1da177e4 4534 }
d5a2f2f1
HMH		 4535
4536 tp->model_str = kstrdup(dmi_get_system_info(DMI_PRODUCT_VERSION),
4537 GFP_KERNEL);
4538 if (strnicmp(tp->model_str, "ThinkPad", 8) != 0) {
4539 kfree(tp->model_str);
4540 tp->model_str = NULL;
4541 }
1da177e4
LT		 4542}
4543
5fba344c
HMH		 4544static int __init probe_for_thinkpad(void)
4545{
4546 int is_thinkpad;
4547
4548 if (acpi_disabled)
4549 return -ENODEV;
4550
4551 /*
4552 * Non-ancient models have better DMI tagging, but very old models
4553 * don't.
4554 */
d5a2f2f1 4555 is_thinkpad = (thinkpad_id.model_str != NULL);
5fba344c
HMH		 4556
4557 /* ec is required because many other handles are relative to it */
8d376cd6 4558 IBM_ACPIHANDLE_INIT(ec);
5fba344c
HMH		 4559 if (!ec_handle) {
4560 if (is_thinkpad)
4561 printk(IBM_ERR
4562 "Not yet supported ThinkPad detected!\n");
4563 return -ENODEV;
4564 }
4565
0dcef77c
HMH		 4566 /*
4567 * Risks a regression on very old machines, but reduces potential
4568 * false positives a damn great deal
4569 */
4570 if (!is_thinkpad)
d5a2f2f1 4571 is_thinkpad = (thinkpad_id.vendor == PCI_VENDOR_ID_IBM);
0dcef77c
HMH		 4572
4573 if (!is_thinkpad && !force_load)
4574 return -ENODEV;
4575
5fba344c
HMH		 4576 return 0;
4577}
4578
4579
56b6aeb0 4580/* Module init, exit, parameters */
1da177e4 4581
a5763f22
HMH		 4582static struct ibm_init_struct ibms_init[] __initdata = {
4583 {
4584 .init = thinkpad_acpi_driver_init,
4585 .data = &thinkpad_acpi_driver_data,
4586 },
4587 {
4588 .init = hotkey_init,
4589 .data = &hotkey_driver_data,
4590 },
4591 {
4592 .init = bluetooth_init,
4593 .data = &bluetooth_driver_data,
4594 },
4595 {
4596 .init = wan_init,
4597 .data = &wan_driver_data,
4598 },
4599 {
4600 .init = video_init,
4601 .data = &video_driver_data,
4602 },
4603 {
4604 .init = light_init,
4605 .data = &light_driver_data,
4606 },
4607#ifdef CONFIG_THINKPAD_ACPI_DOCK
4608 {
4609 .init = dock_init,
4610 .data = &dock_driver_data[0],
4611 },
4612 {
d94a7f16 4613 .init = dock_init2,
a5763f22
HMH		 4614 .data = &dock_driver_data[1],
4615 },
4616#endif
4617#ifdef CONFIG_THINKPAD_ACPI_BAY
4618 {
4619 .init = bay_init,
4620 .data = &bay_driver_data,
4621 },
4622#endif
4623 {
4624 .init = cmos_init,
4625 .data = &cmos_driver_data,
4626 },
4627 {
4628 .init = led_init,
4629 .data = &led_driver_data,
4630 },
4631 {
4632 .init = beep_init,
4633 .data = &beep_driver_data,
4634 },
4635 {
4636 .init = thermal_init,
4637 .data = &thermal_driver_data,
4638 },
4639 {
4640 .data = &ecdump_driver_data,
4641 },
4642 {
4643 .init = brightness_init,
4644 .data = &brightness_driver_data,
4645 },
4646 {
4647 .data = &volume_driver_data,
4648 },
4649 {
4650 .init = fan_init,
4651 .data = &fan_driver_data,
4652 },
4653};
4654
3945ac36 4655static int __init set_ibm_param(const char *val, struct kernel_param *kp)
1da177e4
LT		 4656{
4657 unsigned int i;
a5763f22 4658 struct ibm_struct *ibm;
1da177e4 4659
a5763f22
HMH		 4660 for (i = 0; i < ARRAY_SIZE(ibms_init); i++) {
4661 ibm = ibms_init[i].data;
4662 BUG_ON(ibm == NULL);
4663
4664 if (strcmp(ibm->name, kp->name) == 0 && ibm->write) {
4665 if (strlen(val) > sizeof(ibms_init[i].param) - 2)
78f81cc4 4666 return -ENOSPC;
a5763f22
HMH		 4667 strcpy(ibms_init[i].param, val);
4668 strcat(ibms_init[i].param, ",");
78f81cc4
BD		 4669 return 0;
4670 }
a5763f22 4671 }
1da177e4 4672
1da177e4
LT		 4673 return -EINVAL;
4674}
4675
56b6aeb0
HMH		 4676static int experimental;
4677module_param(experimental, int, 0);
4678
132ce091
HMH		 4679static u32 dbg_level;
4680module_param_named(debug, dbg_level, uint, 0);
4681
0dcef77c 4682static int force_load;
86cc9445 4683module_param(force_load, bool, 0);
0dcef77c 4684
ecf2a80a 4685static int fan_control_allowed;
86cc9445 4686module_param_named(fan_control, fan_control_allowed, bool, 0);
ecf2a80a 4687
24d3b774
HMH		 4688static int brightness_mode;
4689module_param_named(brightness_mode, brightness_mode, int, 0);
4690
ff80f137
HMH		 4691static unsigned int hotkey_report_mode;
4692module_param(hotkey_report_mode, uint, 0);
4693
1da177e4
LT		 4694#define IBM_PARAM(feature) \
4695 module_param_call(feature, set_ibm_param, NULL, NULL, 0)
4696
78f81cc4
BD		 4697IBM_PARAM(hotkey);
4698IBM_PARAM(bluetooth);
4699IBM_PARAM(video);
4700IBM_PARAM(light);
85998248 4701#ifdef CONFIG_THINKPAD_ACPI_DOCK
78f81cc4 4702IBM_PARAM(dock);
63e5f248 4703#endif
85998248 4704#ifdef CONFIG_THINKPAD_ACPI_BAY
78f81cc4 4705IBM_PARAM(bay);
85998248 4706#endif /* CONFIG_THINKPAD_ACPI_BAY */
78f81cc4
BD		 4707IBM_PARAM(cmos);
4708IBM_PARAM(led);
4709IBM_PARAM(beep);
4710IBM_PARAM(ecdump);
4711IBM_PARAM(brightness);
4712IBM_PARAM(volume);
4713IBM_PARAM(fan);
4714
1def7115 4715static int __init thinkpad_acpi_module_init(void)
1da177e4
LT		 4716{
4717 int ret, i;
4718
8fef502e
HMH		 4719 tpacpi_lifecycle = TPACPI_LIFE_INIT;
4720
ff80f137
HMH		 4721 /* Parameter checking */
4722 if (hotkey_report_mode > 2)
4723 return -EINVAL;
4724
54ae1501 4725 /* Driver-level probe */
d5a2f2f1
HMH		 4726
4727 get_thinkpad_model_data(&thinkpad_id);
5fba344c 4728 ret = probe_for_thinkpad();
d5a2f2f1
HMH		 4729 if (ret) {
4730 thinkpad_acpi_module_exit();
5fba344c 4731 return ret;
d5a2f2f1 4732 }
1da177e4 4733
54ae1501 4734 /* Driver initialization */
d5a2f2f1 4735
8d376cd6
HMH		 4736 IBM_ACPIHANDLE_INIT(ecrd);
4737 IBM_ACPIHANDLE_INIT(ecwr);
1da177e4 4738
8d376cd6 4739 proc_dir = proc_mkdir(IBM_PROC_DIR, acpi_root_dir);
1da177e4 4740 if (!proc_dir) {
8d376cd6 4741 printk(IBM_ERR "unable to create proc dir " IBM_PROC_DIR);
1def7115 4742 thinkpad_acpi_module_exit();
1da177e4
LT		 4743 return -ENODEV;
4744 }
4745 proc_dir->owner = THIS_MODULE;
78f81cc4 4746
54ae1501
HMH		 4747 ret = platform_driver_register(&tpacpi_pdriver);
4748 if (ret) {
4749 printk(IBM_ERR "unable to register platform driver\n");
4750 thinkpad_acpi_module_exit();
4751 return ret;
4752 }
ac36393d
HMH		 4753 tp_features.platform_drv_registered = 1;
4754
176750d6
HMH		 4755 ret = tpacpi_create_driver_attributes(&tpacpi_pdriver.driver);
4756 if (ret) {
4757 printk(IBM_ERR "unable to create sysfs driver attributes\n");
4758 thinkpad_acpi_module_exit();
4759 return ret;
4760 }
ac36393d 4761 tp_features.platform_drv_attrs_registered = 1;
176750d6 4762
54ae1501
HMH		 4763
4764 /* Device initialization */
4765 tpacpi_pdev = platform_device_register_simple(IBM_DRVR_NAME, -1,
4766 NULL, 0);
4767 if (IS_ERR(tpacpi_pdev)) {
4768 ret = PTR_ERR(tpacpi_pdev);
4769 tpacpi_pdev = NULL;
4770 printk(IBM_ERR "unable to register platform device\n");
4771 thinkpad_acpi_module_exit();
4772 return ret;
4773 }
4774 tpacpi_hwmon = hwmon_device_register(&tpacpi_pdev->dev);
4775 if (IS_ERR(tpacpi_hwmon)) {
4776 ret = PTR_ERR(tpacpi_hwmon);
4777 tpacpi_hwmon = NULL;
4778 printk(IBM_ERR "unable to register hwmon device\n");
4779 thinkpad_acpi_module_exit();
4780 return ret;
4781 }
8523ed6f 4782 mutex_init(&tpacpi_inputdev_send_mutex);
7f5d1cd6
HMH		 4783 tpacpi_inputdev = input_allocate_device();
4784 if (!tpacpi_inputdev) {
4785 printk(IBM_ERR "unable to allocate input device\n");
4786 thinkpad_acpi_module_exit();
4787 return -ENOMEM;
4788 } else {
4789 /* Prepare input device, but don't register */
4790 tpacpi_inputdev->name = "ThinkPad Extra Buttons";
4791 tpacpi_inputdev->phys = IBM_DRVR_NAME "/input0";
4792 tpacpi_inputdev->id.bustype = BUS_HOST;
edf0e0e5
HMH		 4793 tpacpi_inputdev->id.vendor = (thinkpad_id.vendor) ?
4794 thinkpad_id.vendor :
4795 PCI_VENDOR_ID_IBM;
7f5d1cd6
HMH		 4796 tpacpi_inputdev->id.product = TPACPI_HKEY_INPUT_PRODUCT;
4797 tpacpi_inputdev->id.version = TPACPI_HKEY_INPUT_VERSION;
4798 }
a5763f22
HMH		 4799 for (i = 0; i < ARRAY_SIZE(ibms_init); i++) {
4800 ret = ibm_init(&ibms_init[i]);
4801 if (ret >= 0 && *ibms_init[i].param)
4802 ret = ibms_init[i].data->write(ibms_init[i].param);
1da177e4 4803 if (ret < 0) {
1def7115 4804 thinkpad_acpi_module_exit();
1da177e4
LT		 4805 return ret;
4806 }
4807 }
7f5d1cd6
HMH		 4808 ret = input_register_device(tpacpi_inputdev);
4809 if (ret < 0) {
4810 printk(IBM_ERR "unable to register input device\n");
4811 thinkpad_acpi_module_exit();
4812 return ret;
4813 } else {
4814 tp_features.input_device_registered = 1;
4815 }
1da177e4 4816
8fef502e 4817 tpacpi_lifecycle = TPACPI_LIFE_RUNNING;
1da177e4
LT		 4818 return 0;
4819}
4820
1def7115 4821static void thinkpad_acpi_module_exit(void)
56b6aeb0 4822{
a5763f22
HMH		 4823 struct ibm_struct *ibm, *itmp;
4824
8fef502e
HMH		 4825 tpacpi_lifecycle = TPACPI_LIFE_EXITING;
4826
a5763f22
HMH		 4827 list_for_each_entry_safe_reverse(ibm, itmp,
4828 &tpacpi_all_drivers,
4829 all_drivers) {
4830 ibm_exit(ibm);
4831 }
56b6aeb0 4832
a5763f22 4833 dbg_printk(TPACPI_DBG_INIT, "finished subdriver exit path...\n");
56b6aeb0 4834
7f5d1cd6
HMH		 4835 if (tpacpi_inputdev) {
4836 if (tp_features.input_device_registered)
4837 input_unregister_device(tpacpi_inputdev);
4838 else
4839 input_free_device(tpacpi_inputdev);
4840 }
4841
54ae1501
HMH		 4842 if (tpacpi_hwmon)
4843 hwmon_device_unregister(tpacpi_hwmon);
4844
4845 if (tpacpi_pdev)
4846 platform_device_unregister(tpacpi_pdev);
4847
ac36393d
HMH		 4848 if (tp_features.platform_drv_attrs_registered)
4849 tpacpi_remove_driver_attributes(&tpacpi_pdriver.driver);
4850
4851 if (tp_features.platform_drv_registered)
4852 platform_driver_unregister(&tpacpi_pdriver);
54ae1501 4853
56b6aeb0 4854 if (proc_dir)
8d376cd6 4855 remove_proc_entry(IBM_PROC_DIR, acpi_root_dir);
56b6aeb0 4856
d5a2f2f1
HMH		 4857 kfree(thinkpad_id.bios_version_str);
4858 kfree(thinkpad_id.ec_version_str);
4859 kfree(thinkpad_id.model_str);
56b6aeb0
HMH		 4860}
4861
1def7115
HMH		 4862module_init(thinkpad_acpi_module_init);
4863module_exit(thinkpad_acpi_module_exit);
Linux kernel - Deliverables
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