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ACPI: thinkpad-acpi: dequeue all pending hot key events at once (v2.2)
[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;
3eea123d
HMH		 1199 int send_acpi_ev;
1200
1201 if (event != 0x80) {
1202 printk(IBM_ERR "unknown HKEY notification event %d\n", event);
1203 /* forward it to userspace, maybe it knows how to handle it */
1204 acpi_bus_generate_netlink_event(ibm->acpi->device->pnp.device_class,
1205 ibm->acpi->device->dev.bus_id,
1206 event, 0);
1207 return;
1208 }
1209
1210 while (1) {
1211 if (!acpi_evalf(hkey_handle, &hkey, "MHKP", "d")) {
1212 printk(IBM_ERR "failed to retrieve HKEY event\n");
1213 return;
1214 }
1215
1216 if (hkey == 0) {
1217 /* queue empty */
1218 return;
1219 }
1220
1221 send_acpi_ev = 0;
56b6aeb0 1222
ff80f137
HMH		 1223 switch (hkey >> 12) {
1224 case 1:
1225 /* 0x1000-0x1FFF: key presses */
1226 scancode = hkey & 0xfff;
1227 if (scancode > 0 && scancode < 0x21) {
1228 scancode--;
1229 keycode = hotkey_keycode_map[scancode];
1230 tpacpi_input_send_key(scancode, keycode);
1231 } else {
1232 printk(IBM_ERR
1233 "hotkey 0x%04x out of range for keyboard map\n",
1234 hkey);
1235 send_acpi_ev = 1;
1236 }
1237 break;
1238 case 5:
1239 /* 0x5000-0x5FFF: LID */
1240 /* we don't handle it through this path, just
1241 * eat up known LID events */
1242 if (hkey != 0x5001 && hkey != 0x5002) {
1243 printk(IBM_ERR
3eea123d
HMH		 1244 "unknown LID-related HKEY event: 0x%04x\n",
1245 hkey);
ff80f137
HMH		 1246 send_acpi_ev = 1;
1247 }
1248 break;
1249 case 7:
1250 /* 0x7000-0x7FFF: misc */
1251 if (tp_features.hotkey_wlsw && hkey == 0x7000) {
1252 tpacpi_input_send_radiosw();
6a38abbf 1253 break;
6a38abbf 1254 }
ff80f137
HMH		 1255 /* fallthrough to default */
1256 default:
1257 /* case 2: dock-related */
1258 /* 0x2305 - T43 waking up due to bay lever eject while aslept */
1259 /* case 3: ultra-bay related. maybe bay in dock? */
1260 /* 0x3003 - T43 after wake up by bay lever eject (0x2305) */
1261 printk(IBM_NOTICE "unhandled HKEY event 0x%04x\n", hkey);
1262 send_acpi_ev = 1;
6a38abbf 1263 }
ff80f137 1264
3eea123d
HMH		 1265 /* Legacy events */
1266 if (send_acpi_ev || hotkey_report_mode < 2)
1267 acpi_bus_generate_proc_event(ibm->acpi->device, event, hkey);
ff80f137 1268
3eea123d
HMH		 1269 /* netlink events */
1270 if (send_acpi_ev) {
1271 acpi_bus_generate_netlink_event(ibm->acpi->device->pnp.device_class,
1272 ibm->acpi->device->dev.bus_id,
1273 event, hkey);
1274 }
56b6aeb0
HMH		 1275 }
1276}
1277
5c29d58f
HMH		 1278static void hotkey_resume(void)
1279{
1280 tpacpi_input_send_radiosw();
1281}
1282
40ca9fdf
HMH		 1283/*
1284 * Call with hotkey_mutex held
1285 */
ae92bd17 1286static int hotkey_get(int *status, u32 *mask)
1da177e4
LT		 1287{
1288 if (!acpi_evalf(hkey_handle, status, "DHKC", "d"))
b86c4722 1289 return -EIO;
78f81cc4 1290
d8fd94d9 1291 if (tp_features.hotkey_mask)
78f81cc4 1292 if (!acpi_evalf(hkey_handle, mask, "DHKN", "d"))
b86c4722 1293 return -EIO;
78f81cc4 1294
b86c4722 1295 return 0;
1da177e4
LT		 1296}
1297
40ca9fdf
HMH		 1298/*
1299 * Call with hotkey_mutex held
1300 */
ae92bd17 1301static int hotkey_set(int status, u32 mask)
1da177e4
LT		 1302{
1303 int i;
1304
1305 if (!acpi_evalf(hkey_handle, NULL, "MHKC", "vd", status))
b86c4722 1306 return -EIO;
1da177e4 1307
d8fd94d9 1308 if (tp_features.hotkey_mask)
78f81cc4
BD		 1309 for (i = 0; i < 32; i++) {
1310 int bit = ((1 << i) & mask) != 0;
1311 if (!acpi_evalf(hkey_handle,
1312 NULL, "MHKM", "vdd", i + 1, bit))
b86c4722 1313 return -EIO;
78f81cc4 1314 }
1da177e4 1315
b86c4722 1316 return 0;
1da177e4
LT		 1317}
1318
a0416420 1319/* procfs -------------------------------------------------------------- */
78f81cc4 1320static int hotkey_read(char *p)
1da177e4 1321{
ae92bd17
HMH		 1322 int res, status;
1323 u32 mask;
1da177e4
LT		 1324 int len = 0;
1325
d8fd94d9 1326 if (!tp_features.hotkey) {
78f81cc4
BD		 1327 len += sprintf(p + len, "status:\t\tnot supported\n");
1328 return len;
1329 }
1330
40ca9fdf
HMH		 1331 res = mutex_lock_interruptible(&hotkey_mutex);
1332 if (res < 0)
1333 return res;
b86c4722 1334 res = hotkey_get(&status, &mask);
40ca9fdf 1335 mutex_unlock(&hotkey_mutex);
b86c4722
HMH		 1336 if (res)
1337 return res;
1da177e4
LT		 1338
1339 len += sprintf(p + len, "status:\t\t%s\n", enabled(status, 0));
d8fd94d9 1340 if (tp_features.hotkey_mask) {
ae92bd17 1341 len += sprintf(p + len, "mask:\t\t0x%08x\n", mask);
1da177e4
LT		 1342 len += sprintf(p + len,
1343 "commands:\tenable, disable, reset, <mask>\n");
1344 } else {
1345 len += sprintf(p + len, "mask:\t\tnot supported\n");
1346 len += sprintf(p + len, "commands:\tenable, disable, reset\n");
1347 }
1348
1349 return len;
1350}
1351
78f81cc4 1352static int hotkey_write(char *buf)
1da177e4 1353{
ae92bd17
HMH		 1354 int res, status;
1355 u32 mask;
1da177e4
LT		 1356 char *cmd;
1357 int do_cmd = 0;
1358
d8fd94d9 1359 if (!tp_features.hotkey)
1da177e4
LT		 1360 return -ENODEV;
1361
40ca9fdf
HMH		 1362 res = mutex_lock_interruptible(&hotkey_mutex);
1363 if (res < 0)
1364 return res;
1365
b86c4722
HMH		 1366 res = hotkey_get(&status, &mask);
1367 if (res)
40ca9fdf 1368 goto errexit;
78f81cc4 1369
40ca9fdf 1370 res = 0;
1da177e4
LT		 1371 while ((cmd = next_cmd(&buf))) {
1372 if (strlencmp(cmd, "enable") == 0) {
1373 status = 1;
1374 } else if (strlencmp(cmd, "disable") == 0) {
1375 status = 0;
1376 } else if (strlencmp(cmd, "reset") == 0) {
78f81cc4
BD		 1377 status = hotkey_orig_status;
1378 mask = hotkey_orig_mask;
1da177e4
LT		 1379 } else if (sscanf(cmd, "0x%x", &mask) == 1) {
1380 /* mask set */
1381 } else if (sscanf(cmd, "%x", &mask) == 1) {
1382 /* mask set */
40ca9fdf
HMH		 1383 } else {
1384 res = -EINVAL;
1385 goto errexit;
1386 }
1da177e4
LT		 1387 do_cmd = 1;
1388 }
1389
40ca9fdf 1390 if (do_cmd)
b86c4722 1391 res = hotkey_set(status, mask);
1da177e4 1392
40ca9fdf
HMH		 1393errexit:
1394 mutex_unlock(&hotkey_mutex);
1395 return res;
78f81cc4 1396}
1da177e4 1397
1ba90e3a
TR		 1398static const struct acpi_device_id ibm_htk_device_ids[] = {
1399 {IBM_HKEY_HID, 0},
1400 {"", 0},
1401};
1402
8d376cd6 1403static struct tp_acpi_drv_struct ibm_hotkey_acpidriver = {
1ba90e3a 1404 .hid = ibm_htk_device_ids,
8d376cd6
HMH		 1405 .notify = hotkey_notify,
1406 .handle = &hkey_handle,
1407 .type = ACPI_DEVICE_NOTIFY,
1408};
1409
a5763f22
HMH		 1410static struct ibm_struct hotkey_driver_data = {
1411 .name = "hotkey",
a5763f22
HMH		 1412 .read = hotkey_read,
1413 .write = hotkey_write,
1414 .exit = hotkey_exit,
5c29d58f 1415 .resume = hotkey_resume,
8d376cd6 1416 .acpi = &ibm_hotkey_acpidriver,
a5763f22
HMH		 1417};
1418
56b6aeb0
HMH		 1419/*************************************************************************
1420 * Bluetooth subdriver
1421 */
1da177e4 1422
d3a6ade4
HMH		 1423/* sysfs bluetooth enable ---------------------------------------------- */
1424static ssize_t bluetooth_enable_show(struct device *dev,
1425 struct device_attribute *attr,
1426 char *buf)
1427{
1428 int status;
1429
1430 status = bluetooth_get_radiosw();
1431 if (status < 0)
1432 return status;
1433
1434 return snprintf(buf, PAGE_SIZE, "%d\n", status ? 1 : 0);
1435}
1436
1437static ssize_t bluetooth_enable_store(struct device *dev,
1438 struct device_attribute *attr,
1439 const char *buf, size_t count)
1440{
1441 unsigned long t;
1442 int res;
1443
1444 if (parse_strtoul(buf, 1, &t))
1445 return -EINVAL;
1446
1447 res = bluetooth_set_radiosw(t);
1448
1449 return (res) ? res : count;
1450}
1451
1452static struct device_attribute dev_attr_bluetooth_enable =
cc4c24e1 1453 __ATTR(bluetooth_enable, S_IWUSR | S_IRUGO,
d3a6ade4
HMH		 1454 bluetooth_enable_show, bluetooth_enable_store);
1455
1456/* --------------------------------------------------------------------- */
1457
1458static struct attribute *bluetooth_attributes[] = {
1459 &dev_attr_bluetooth_enable.attr,
1460 NULL
1461};
1462
1463static const struct attribute_group bluetooth_attr_group = {
d3a6ade4
HMH		 1464 .attrs = bluetooth_attributes,
1465};
1466
a5763f22 1467static int __init bluetooth_init(struct ibm_init_struct *iibm)
1da177e4 1468{
d3a6ade4 1469 int res;
d6fdd1e9
HMH		 1470 int status = 0;
1471
fe08bc4b
HMH		 1472 vdbg_printk(TPACPI_DBG_INIT, "initializing bluetooth subdriver\n");
1473
8d376cd6 1474 IBM_ACPIHANDLE_INIT(hkey);
5fba344c 1475
78f81cc4
BD		 1476 /* bluetooth not supported on 570, 600e/x, 770e, 770x, A21e, A2xm/p,
1477 G4x, R30, R31, R40e, R50e, T20-22, X20-21 */
d8fd94d9 1478 tp_features.bluetooth = hkey_handle &&
d6fdd1e9
HMH		 1479 acpi_evalf(hkey_handle, &status, "GBDC", "qd");
1480
1481 vdbg_printk(TPACPI_DBG_INIT, "bluetooth is %s, status 0x%02x\n",
1482 str_supported(tp_features.bluetooth),
1483 status);
1484
d3a6ade4
HMH		 1485 if (tp_features.bluetooth) {
1486 if (!(status & TP_ACPI_BLUETOOTH_HWPRESENT)) {
1487 /* no bluetooth hardware present in system */
1488 tp_features.bluetooth = 0;
1489 dbg_printk(TPACPI_DBG_INIT,
1490 "bluetooth hardware not installed\n");
1491 } else {
1492 res = sysfs_create_group(&tpacpi_pdev->dev.kobj,
1493 &bluetooth_attr_group);
1494 if (res)
1495 return res;
1496 }
d6fdd1e9 1497 }
fe08bc4b 1498
d8fd94d9 1499 return (tp_features.bluetooth)? 0 : 1;
1da177e4
LT		 1500}
1501
d3a6ade4
HMH		 1502static void bluetooth_exit(void)
1503{
1504 sysfs_remove_group(&tpacpi_pdev->dev.kobj,
1505 &bluetooth_attr_group);
1506}
1507
d6fdd1e9 1508static int bluetooth_get_radiosw(void)
1da177e4
LT		 1509{
1510 int status;
1511
d6fdd1e9
HMH		 1512 if (!tp_features.bluetooth)
1513 return -ENODEV;
1da177e4 1514
d6fdd1e9
HMH		 1515 if (!acpi_evalf(hkey_handle, &status, "GBDC", "d"))
1516 return -EIO;
1517
1518 return ((status & TP_ACPI_BLUETOOTH_RADIOSSW) != 0);
1519}
1520
1521static int bluetooth_set_radiosw(int radio_on)
1522{
1523 int status;
1524
1525 if (!tp_features.bluetooth)
1526 return -ENODEV;
1527
1528 if (!acpi_evalf(hkey_handle, &status, "GBDC", "d"))
1529 return -EIO;
1530 if (radio_on)
1531 status |= TP_ACPI_BLUETOOTH_RADIOSSW;
1532 else
1533 status &= ~TP_ACPI_BLUETOOTH_RADIOSSW;
1534 if (!acpi_evalf(hkey_handle, NULL, "SBDC", "vd", status))
1535 return -EIO;
1536
1537 return 0;
1da177e4
LT		 1538}
1539
d3a6ade4 1540/* procfs -------------------------------------------------------------- */
78f81cc4 1541static int bluetooth_read(char *p)
1da177e4
LT		 1542{
1543 int len = 0;
d6fdd1e9 1544 int status = bluetooth_get_radiosw();
1da177e4 1545
d8fd94d9 1546 if (!tp_features.bluetooth)
1da177e4 1547 len += sprintf(p + len, "status:\t\tnot supported\n");
1da177e4 1548 else {
d6fdd1e9
HMH		 1549 len += sprintf(p + len, "status:\t\t%s\n",
1550 (status)? "enabled" : "disabled");
1da177e4
LT		 1551 len += sprintf(p + len, "commands:\tenable, disable\n");
1552 }
1553
1554 return len;
1555}
1556
78f81cc4 1557static int bluetooth_write(char *buf)
1da177e4 1558{
1da177e4 1559 char *cmd;
1da177e4 1560
d8fd94d9 1561 if (!tp_features.bluetooth)
78f81cc4 1562 return -ENODEV;
1da177e4
LT		 1563
1564 while ((cmd = next_cmd(&buf))) {
1565 if (strlencmp(cmd, "enable") == 0) {
d6fdd1e9 1566 bluetooth_set_radiosw(1);
1da177e4 1567 } else if (strlencmp(cmd, "disable") == 0) {
d6fdd1e9 1568 bluetooth_set_radiosw(0);
1da177e4
LT		 1569 } else
1570 return -EINVAL;
1da177e4
LT		 1571 }
1572
1da177e4
LT		 1573 return 0;
1574}
1575
a5763f22
HMH		 1576static struct ibm_struct bluetooth_driver_data = {
1577 .name = "bluetooth",
1578 .read = bluetooth_read,
1579 .write = bluetooth_write,
d3a6ade4 1580 .exit = bluetooth_exit,
a5763f22
HMH		 1581};
1582
56b6aeb0
HMH		 1583/*************************************************************************
1584 * Wan subdriver
1585 */
1586
d3a6ade4
HMH		 1587/* sysfs wan enable ---------------------------------------------------- */
1588static ssize_t wan_enable_show(struct device *dev,
1589 struct device_attribute *attr,
1590 char *buf)
1591{
1592 int status;
1593
1594 status = wan_get_radiosw();
1595 if (status < 0)
1596 return status;
1597
1598 return snprintf(buf, PAGE_SIZE, "%d\n", status ? 1 : 0);
1599}
1600
1601static ssize_t wan_enable_store(struct device *dev,
1602 struct device_attribute *attr,
1603 const char *buf, size_t count)
1604{
1605 unsigned long t;
1606 int res;
1607
1608 if (parse_strtoul(buf, 1, &t))
1609 return -EINVAL;
1610
1611 res = wan_set_radiosw(t);
1612
1613 return (res) ? res : count;
1614}
1615
1616static struct device_attribute dev_attr_wan_enable =
cc4c24e1 1617 __ATTR(wwan_enable, S_IWUSR | S_IRUGO,
d3a6ade4
HMH		 1618 wan_enable_show, wan_enable_store);
1619
1620/* --------------------------------------------------------------------- */
1621
1622static struct attribute *wan_attributes[] = {
1623 &dev_attr_wan_enable.attr,
1624 NULL
1625};
1626
1627static const struct attribute_group wan_attr_group = {
d3a6ade4
HMH		 1628 .attrs = wan_attributes,
1629};
1630
a5763f22 1631static int __init wan_init(struct ibm_init_struct *iibm)
42adb53c 1632{
d3a6ade4 1633 int res;
d6fdd1e9
HMH		 1634 int status = 0;
1635
fe08bc4b
HMH		 1636 vdbg_printk(TPACPI_DBG_INIT, "initializing wan subdriver\n");
1637
8d376cd6 1638 IBM_ACPIHANDLE_INIT(hkey);
5fba344c 1639
d8fd94d9 1640 tp_features.wan = hkey_handle &&
d6fdd1e9
HMH		 1641 acpi_evalf(hkey_handle, &status, "GWAN", "qd");
1642
1643 vdbg_printk(TPACPI_DBG_INIT, "wan is %s, status 0x%02x\n",
1644 str_supported(tp_features.wan),
1645 status);
1646
d3a6ade4
HMH		 1647 if (tp_features.wan) {
1648 if (!(status & TP_ACPI_WANCARD_HWPRESENT)) {
1649 /* no wan hardware present in system */
1650 tp_features.wan = 0;
1651 dbg_printk(TPACPI_DBG_INIT,
1652 "wan hardware not installed\n");
1653 } else {
1654 res = sysfs_create_group(&tpacpi_pdev->dev.kobj,
1655 &wan_attr_group);
1656 if (res)
1657 return res;
1658 }
d6fdd1e9 1659 }
fe08bc4b 1660
d8fd94d9 1661 return (tp_features.wan)? 0 : 1;
42adb53c
JF		 1662}
1663
d3a6ade4
HMH		 1664static void wan_exit(void)
1665{
1666 sysfs_remove_group(&tpacpi_pdev->dev.kobj,
1667 &wan_attr_group);
1668}
1669
d6fdd1e9 1670static int wan_get_radiosw(void)
42adb53c
JF		 1671{
1672 int status;
1673
d6fdd1e9
HMH		 1674 if (!tp_features.wan)
1675 return -ENODEV;
42adb53c 1676
d6fdd1e9
HMH		 1677 if (!acpi_evalf(hkey_handle, &status, "GWAN", "d"))
1678 return -EIO;
1679
1680 return ((status & TP_ACPI_WANCARD_RADIOSSW) != 0);
1681}
1682
1683static int wan_set_radiosw(int radio_on)
1684{
1685 int status;
1686
1687 if (!tp_features.wan)
1688 return -ENODEV;
1689
1690 if (!acpi_evalf(hkey_handle, &status, "GWAN", "d"))
1691 return -EIO;
1692 if (radio_on)
1693 status |= TP_ACPI_WANCARD_RADIOSSW;
1694 else
1695 status &= ~TP_ACPI_WANCARD_RADIOSSW;
1696 if (!acpi_evalf(hkey_handle, NULL, "SWAN", "vd", status))
1697 return -EIO;
1698
1699 return 0;
42adb53c
JF		 1700}
1701
d3a6ade4 1702/* procfs -------------------------------------------------------------- */
42adb53c
JF		 1703static int wan_read(char *p)
1704{
1705 int len = 0;
d6fdd1e9 1706 int status = wan_get_radiosw();
42adb53c 1707
d8fd94d9 1708 if (!tp_features.wan)
42adb53c 1709 len += sprintf(p + len, "status:\t\tnot supported\n");
42adb53c 1710 else {
d6fdd1e9
HMH		 1711 len += sprintf(p + len, "status:\t\t%s\n",
1712 (status)? "enabled" : "disabled");
42adb53c
JF		 1713 len += sprintf(p + len, "commands:\tenable, disable\n");
1714 }
1715
1716 return len;
1717}
1718
1719static int wan_write(char *buf)
1720{
42adb53c 1721 char *cmd;
42adb53c 1722
d8fd94d9 1723 if (!tp_features.wan)
42adb53c
JF		 1724 return -ENODEV;
1725
1726 while ((cmd = next_cmd(&buf))) {
1727 if (strlencmp(cmd, "enable") == 0) {
d6fdd1e9 1728 wan_set_radiosw(1);
42adb53c 1729 } else if (strlencmp(cmd, "disable") == 0) {
d6fdd1e9 1730 wan_set_radiosw(0);
42adb53c
JF		 1731 } else
1732 return -EINVAL;
42adb53c
JF		 1733 }
1734
42adb53c
JF		 1735 return 0;
1736}
1737
a5763f22
HMH		 1738static struct ibm_struct wan_driver_data = {
1739 .name = "wan",
1740 .read = wan_read,
1741 .write = wan_write,
d3a6ade4 1742 .exit = wan_exit,
92641177 1743 .flags.experimental = 1,
a5763f22
HMH		 1744};
1745
56b6aeb0
HMH		 1746/*************************************************************************
1747 * Video subdriver
1748 */
1749
9a8e1738
HMH		 1750static enum video_access_mode video_supported;
1751static int video_orig_autosw;
78f81cc4 1752
56b6aeb0
HMH		 1753IBM_HANDLE(vid, root, "\\_SB.PCI.AGP.VGA", /* 570 */
1754 "\\_SB.PCI0.AGP0.VID0", /* 600e/x, 770x */
1755 "\\_SB.PCI0.VID0", /* 770e */
1756 "\\_SB.PCI0.VID", /* A21e, G4x, R50e, X30, X40 */
1757 "\\_SB.PCI0.AGP.VID", /* all others */
1758 ); /* R30, R31 */
1759
1760IBM_HANDLE(vid2, root, "\\_SB.PCI0.AGPB.VID"); /* G41 */
1761
a5763f22 1762static int __init video_init(struct ibm_init_struct *iibm)
1da177e4 1763{
78f81cc4
BD		 1764 int ivga;
1765
fe08bc4b
HMH		 1766 vdbg_printk(TPACPI_DBG_INIT, "initializing video subdriver\n");
1767
8d376cd6
HMH		 1768 IBM_ACPIHANDLE_INIT(vid);
1769 IBM_ACPIHANDLE_INIT(vid2);
5fba344c 1770
78f81cc4
BD		 1771 if (vid2_handle && acpi_evalf(NULL, &ivga, "\\IVGA", "d") && ivga)
1772 /* G41, assume IVGA doesn't change */
1773 vid_handle = vid2_handle;
1774
1775 if (!vid_handle)
1776 /* video switching not supported on R30, R31 */
efa27145 1777 video_supported = TPACPI_VIDEO_NONE;
78f81cc4
BD		 1778 else if (acpi_evalf(vid_handle, &video_orig_autosw, "SWIT", "qd"))
1779 /* 570 */
efa27145 1780 video_supported = TPACPI_VIDEO_570;
78f81cc4
BD		 1781 else if (acpi_evalf(vid_handle, &video_orig_autosw, "^VADL", "qd"))
1782 /* 600e/x, 770e, 770x */
efa27145 1783 video_supported = TPACPI_VIDEO_770;
78f81cc4
BD		 1784 else
1785 /* all others */
efa27145 1786 video_supported = TPACPI_VIDEO_NEW;
1da177e4 1787
fe08bc4b
HMH		 1788 vdbg_printk(TPACPI_DBG_INIT, "video is %s, mode %d\n",
1789 str_supported(video_supported != TPACPI_VIDEO_NONE),
1790 video_supported);
1791
5fba344c 1792 return (video_supported != TPACPI_VIDEO_NONE)? 0 : 1;
1da177e4
LT		 1793}
1794
56b6aeb0
HMH		 1795static void video_exit(void)
1796{
83f34724
HMH		 1797 dbg_printk(TPACPI_DBG_EXIT,
1798 "restoring original video autoswitch mode\n");
1799 if (video_autosw_set(video_orig_autosw))
1800 printk(IBM_ERR "error while trying to restore original "
1801 "video autoswitch mode\n");
56b6aeb0
HMH		 1802}
1803
83f34724 1804static int video_outputsw_get(void)
1da177e4
LT		 1805{
1806 int status = 0;
1807 int i;
1808
83f34724
HMH		 1809 switch (video_supported) {
1810 case TPACPI_VIDEO_570:
1811 if (!acpi_evalf(NULL, &i, "\\_SB.PHS", "dd",
1812 TP_ACPI_VIDEO_570_PHSCMD))
1813 return -EIO;
1814 status = i & TP_ACPI_VIDEO_570_PHSMASK;
1815 break;
1816 case TPACPI_VIDEO_770:
1817 if (!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, "\\VCDC", "d"))
1822 return -EIO;
1823 if (i)
1824 status |= TP_ACPI_VIDEO_S_CRT;
1825 break;
1826 case TPACPI_VIDEO_NEW:
1827 if (!acpi_evalf(NULL, NULL, "\\VUPS", "vd", 1) ||
1828 !acpi_evalf(NULL, &i, "\\VCDC", "d"))
1829 return -EIO;
1830 if (i)
1831 status |= TP_ACPI_VIDEO_S_CRT;
1832
1833 if (!acpi_evalf(NULL, NULL, "\\VUPS", "vd", 0) ||
1834 !acpi_evalf(NULL, &i, "\\VCDL", "d"))
1835 return -EIO;
1836 if (i)
1837 status |= TP_ACPI_VIDEO_S_LCD;
1838 if (!acpi_evalf(NULL, &i, "\\VCDD", "d"))
1839 return -EIO;
1840 if (i)
1841 status |= TP_ACPI_VIDEO_S_DVI;
1842 break;
1843 default:
1844 return -ENOSYS;
78f81cc4
BD		 1845 }
1846
1847 return status;
1848}
1da177e4 1849
83f34724 1850static int video_outputsw_set(int status)
78f81cc4 1851{
83f34724
HMH		 1852 int autosw;
1853 int res = 0;
1854
1855 switch (video_supported) {
1856 case TPACPI_VIDEO_570:
1857 res = acpi_evalf(NULL, NULL,
1858 "\\_SB.PHS2", "vdd",
1859 TP_ACPI_VIDEO_570_PHS2CMD,
1860 status | TP_ACPI_VIDEO_570_PHS2SET);
1861 break;
1862 case TPACPI_VIDEO_770:
1863 autosw = video_autosw_get();
1864 if (autosw < 0)
1865 return autosw;
1da177e4 1866
83f34724
HMH		 1867 res = video_autosw_set(1);
1868 if (res)
1869 return res;
1870 res = acpi_evalf(vid_handle, NULL,
1871 "ASWT", "vdd", status * 0x100, 0);
1872 if (!autosw && video_autosw_set(autosw)) {
1873 printk(IBM_ERR "video auto-switch left enabled due to error\n");
1874 return -EIO;
1875 }
1876 break;
1877 case TPACPI_VIDEO_NEW:
1878 res = acpi_evalf(NULL, NULL, "\\VUPS", "vd", 0x80) &&
1879 acpi_evalf(NULL, NULL, "\\VSDS", "vdd", status, 1);
1880 break;
1881 default:
1882 return -ENOSYS;
1883 }
1da177e4 1884
83f34724 1885 return (res)? 0 : -EIO;
1da177e4
LT		 1886}
1887
83f34724 1888static int video_autosw_get(void)
78f81cc4 1889{
83f34724 1890 int autosw = 0;
78f81cc4 1891
83f34724
HMH		 1892 switch (video_supported) {
1893 case TPACPI_VIDEO_570:
1894 if (!acpi_evalf(vid_handle, &autosw, "SWIT", "d"))
1895 return -EIO;
1896 break;
1897 case TPACPI_VIDEO_770:
1898 case TPACPI_VIDEO_NEW:
1899 if (!acpi_evalf(vid_handle, &autosw, "^VDEE", "d"))
1900 return -EIO;
1901 break;
1902 default:
1903 return -ENOSYS;
1904 }
78f81cc4 1905
83f34724 1906 return autosw & 1;
78f81cc4
BD		 1907}
1908
83f34724 1909static int video_autosw_set(int enable)
78f81cc4 1910{
83f34724
HMH		 1911 if (!acpi_evalf(vid_handle, NULL, "_DOS", "vd", (enable)? 1 : 0))
1912 return -EIO;
1913 return 0;
78f81cc4
BD		 1914}
1915
83f34724 1916static int video_outputsw_cycle(void)
78f81cc4 1917{
83f34724
HMH		 1918 int autosw = video_autosw_get();
1919 int res;
78f81cc4 1920
83f34724
HMH		 1921 if (autosw < 0)
1922 return autosw;
78f81cc4 1923
83f34724
HMH		 1924 switch (video_supported) {
1925 case TPACPI_VIDEO_570:
1926 res = video_autosw_set(1);
1927 if (res)
1928 return res;
1929 res = acpi_evalf(ec_handle, NULL, "_Q16", "v");
1930 break;
1931 case TPACPI_VIDEO_770:
1932 case TPACPI_VIDEO_NEW:
1933 res = video_autosw_set(1);
1934 if (res)
1935 return res;
1936 res = acpi_evalf(vid_handle, NULL, "VSWT", "v");
1937 break;
1938 default:
1939 return -ENOSYS;
1940 }
1941 if (!autosw && video_autosw_set(autosw)) {
1942 printk(IBM_ERR "video auto-switch left enabled due to error\n");
1943 return -EIO;
78f81cc4
BD		 1944 }
1945
83f34724
HMH		 1946 return (res)? 0 : -EIO;
1947}
1948
1949static int video_expand_toggle(void)
1950{
1951 switch (video_supported) {
1952 case TPACPI_VIDEO_570:
1953 return acpi_evalf(ec_handle, NULL, "_Q17", "v")?
1954 0 : -EIO;
1955 case TPACPI_VIDEO_770:
1956 return acpi_evalf(vid_handle, NULL, "VEXP", "v")?
1957 0 : -EIO;
1958 case TPACPI_VIDEO_NEW:
1959 return acpi_evalf(NULL, NULL, "\\VEXP", "v")?
1960 0 : -EIO;
1961 default:
1962 return -ENOSYS;
1963 }
1964 /* not reached */
78f81cc4
BD		 1965}
1966
56b6aeb0
HMH		 1967static int video_read(char *p)
1968{
83f34724 1969 int status, autosw;
56b6aeb0
HMH		 1970 int len = 0;
1971
83f34724 1972 if (video_supported == TPACPI_VIDEO_NONE) {
56b6aeb0
HMH		 1973 len += sprintf(p + len, "status:\t\tnot supported\n");
1974 return len;
1975 }
1976
83f34724
HMH		 1977 status = video_outputsw_get();
1978 if (status < 0)
1979 return status;
1980
1981 autosw = video_autosw_get();
1982 if (autosw < 0)
1983 return autosw;
1984
56b6aeb0
HMH		 1985 len += sprintf(p + len, "status:\t\tsupported\n");
1986 len += sprintf(p + len, "lcd:\t\t%s\n", enabled(status, 0));
1987 len += sprintf(p + len, "crt:\t\t%s\n", enabled(status, 1));
efa27145 1988 if (video_supported == TPACPI_VIDEO_NEW)
56b6aeb0
HMH		 1989 len += sprintf(p + len, "dvi:\t\t%s\n", enabled(status, 3));
1990 len += sprintf(p + len, "auto:\t\t%s\n", enabled(autosw, 0));
1991 len += sprintf(p + len, "commands:\tlcd_enable, lcd_disable\n");
1992 len += sprintf(p + len, "commands:\tcrt_enable, crt_disable\n");
efa27145 1993 if (video_supported == TPACPI_VIDEO_NEW)
56b6aeb0
HMH		 1994 len += sprintf(p + len, "commands:\tdvi_enable, dvi_disable\n");
1995 len += sprintf(p + len, "commands:\tauto_enable, auto_disable\n");
1996 len += sprintf(p + len, "commands:\tvideo_switch, expand_toggle\n");
1997
1998 return len;
1999}
2000
78f81cc4 2001static int video_write(char *buf)
1da177e4
LT		 2002{
2003 char *cmd;
2004 int enable, disable, status;
83f34724 2005 int res;
1da177e4 2006
83f34724 2007 if (video_supported == TPACPI_VIDEO_NONE)
78f81cc4
BD		 2008 return -ENODEV;
2009
83f34724
HMH		 2010 enable = 0;
2011 disable = 0;
1da177e4
LT		 2012
2013 while ((cmd = next_cmd(&buf))) {
2014 if (strlencmp(cmd, "lcd_enable") == 0) {
83f34724 2015 enable |= TP_ACPI_VIDEO_S_LCD;
1da177e4 2016 } else if (strlencmp(cmd, "lcd_disable") == 0) {
83f34724 2017 disable |= TP_ACPI_VIDEO_S_LCD;
1da177e4 2018 } else if (strlencmp(cmd, "crt_enable") == 0) {
83f34724 2019 enable |= TP_ACPI_VIDEO_S_CRT;
1da177e4 2020 } else if (strlencmp(cmd, "crt_disable") == 0) {
83f34724 2021 disable |= TP_ACPI_VIDEO_S_CRT;
efa27145 2022 } else if (video_supported == TPACPI_VIDEO_NEW &&
78f81cc4 2023 strlencmp(cmd, "dvi_enable") == 0) {
83f34724 2024 enable |= TP_ACPI_VIDEO_S_DVI;
efa27145 2025 } else if (video_supported == TPACPI_VIDEO_NEW &&
78f81cc4 2026 strlencmp(cmd, "dvi_disable") == 0) {
83f34724 2027 disable |= TP_ACPI_VIDEO_S_DVI;
1da177e4 2028 } else if (strlencmp(cmd, "auto_enable") == 0) {
83f34724
HMH		 2029 res = video_autosw_set(1);
2030 if (res)
2031 return res;
1da177e4 2032 } else if (strlencmp(cmd, "auto_disable") == 0) {
83f34724
HMH		 2033 res = video_autosw_set(0);
2034 if (res)
2035 return res;
1da177e4 2036 } else if (strlencmp(cmd, "video_switch") == 0) {
83f34724
HMH		 2037 res = video_outputsw_cycle();
2038 if (res)
2039 return res;
1da177e4 2040 } else if (strlencmp(cmd, "expand_toggle") == 0) {
83f34724
HMH		 2041 res = video_expand_toggle();
2042 if (res)
2043 return res;
1da177e4
LT		 2044 } else
2045 return -EINVAL;
2046 }
2047
2048 if (enable || disable) {
83f34724
HMH		 2049 status = video_outputsw_get();
2050 if (status < 0)
2051 return status;
2052 res = video_outputsw_set((status & ~disable) | enable);
2053 if (res)
2054 return res;
1da177e4
LT		 2055 }
2056
2057 return 0;
2058}
2059
a5763f22
HMH		 2060static struct ibm_struct video_driver_data = {
2061 .name = "video",
2062 .read = video_read,
2063 .write = video_write,
2064 .exit = video_exit,
2065};
2066
56b6aeb0
HMH		 2067/*************************************************************************
2068 * Light (thinklight) subdriver
2069 */
1da177e4 2070
56b6aeb0
HMH		 2071IBM_HANDLE(lght, root, "\\LGHT"); /* A21e, A2xm/p, T20-22, X20-21 */
2072IBM_HANDLE(ledb, ec, "LEDB"); /* G4x */
2073
a5763f22 2074static int __init light_init(struct ibm_init_struct *iibm)
1da177e4 2075{
fe08bc4b
HMH		 2076 vdbg_printk(TPACPI_DBG_INIT, "initializing light subdriver\n");
2077
8d376cd6
HMH		 2078 IBM_ACPIHANDLE_INIT(ledb);
2079 IBM_ACPIHANDLE_INIT(lght);
2080 IBM_ACPIHANDLE_INIT(cmos);
5fba344c 2081
78f81cc4 2082 /* light not supported on 570, 600e/x, 770e, 770x, G4x, R30, R31 */
d8fd94d9 2083 tp_features.light = (cmos_handle || lght_handle) && !ledb_handle;
78f81cc4 2084
d8fd94d9 2085 if (tp_features.light)
78f81cc4
BD		 2086 /* light status not supported on
2087 570, 600e/x, 770e, 770x, G4x, R30, R31, R32, X20 */
d8fd94d9
HMH		 2088 tp_features.light_status =
2089 acpi_evalf(ec_handle, NULL, "KBLT", "qv");
1da177e4 2090
fe08bc4b 2091 vdbg_printk(TPACPI_DBG_INIT, "light is %s\n",
d8fd94d9 2092 str_supported(tp_features.light));
fe08bc4b 2093
d8fd94d9 2094 return (tp_features.light)? 0 : 1;
1da177e4
LT		 2095}
2096
78f81cc4 2097static int light_read(char *p)
1da177e4
LT		 2098{
2099 int len = 0;
2100 int status = 0;
2101
d8fd94d9 2102 if (!tp_features.light) {
78f81cc4 2103 len += sprintf(p + len, "status:\t\tnot supported\n");
d8fd94d9 2104 } else if (!tp_features.light_status) {
78f81cc4
BD		 2105 len += sprintf(p + len, "status:\t\tunknown\n");
2106 len += sprintf(p + len, "commands:\ton, off\n");
2107 } else {
1da177e4
LT		 2108 if (!acpi_evalf(ec_handle, &status, "KBLT", "d"))
2109 return -EIO;
2110 len += sprintf(p + len, "status:\t\t%s\n", onoff(status, 0));
78f81cc4
BD		 2111 len += sprintf(p + len, "commands:\ton, off\n");
2112 }
1da177e4
LT		 2113
2114 return len;
2115}
2116
78f81cc4 2117static int light_write(char *buf)
1da177e4
LT		 2118{
2119 int cmos_cmd, lght_cmd;
2120 char *cmd;
2121 int success;
78f81cc4 2122
d8fd94d9 2123 if (!tp_features.light)
78f81cc4
BD		 2124 return -ENODEV;
2125
1da177e4
LT		 2126 while ((cmd = next_cmd(&buf))) {
2127 if (strlencmp(cmd, "on") == 0) {
2128 cmos_cmd = 0x0c;
2129 lght_cmd = 1;
2130 } else if (strlencmp(cmd, "off") == 0) {
2131 cmos_cmd = 0x0d;
2132 lght_cmd = 0;
2133 } else
2134 return -EINVAL;
78f81cc4 2135
1da177e4 2136 success = cmos_handle ?
78f81cc4
BD		 2137 acpi_evalf(cmos_handle, NULL, NULL, "vd", cmos_cmd) :
2138 acpi_evalf(lght_handle, NULL, NULL, "vd", lght_cmd);
1da177e4
LT		 2139 if (!success)
2140 return -EIO;
2141 }
2142
2143 return 0;
2144}
2145
a5763f22
HMH		 2146static struct ibm_struct light_driver_data = {
2147 .name = "light",
2148 .read = light_read,
2149 .write = light_write,
2150};
2151
56b6aeb0
HMH		 2152/*************************************************************************
2153 * Dock subdriver
2154 */
1da177e4 2155
85998248 2156#ifdef CONFIG_THINKPAD_ACPI_DOCK
56b6aeb0
HMH		 2157
2158IBM_HANDLE(dock, root, "\\_SB.GDCK", /* X30, X31, X40 */
2159 "\\_SB.PCI0.DOCK", /* 600e/x,770e,770x,A2xm/p,T20-22,X20-21 */
2160 "\\_SB.PCI0.PCI1.DOCK", /* all others */
2161 "\\_SB.PCI.ISA.SLCE", /* 570 */
2162 ); /* A21e,G4x,R30,R31,R32,R40,R40e,R50e */
2163
5fba344c
HMH		 2164/* don't list other alternatives as we install a notify handler on the 570 */
2165IBM_HANDLE(pci, root, "\\_SB.PCI"); /* 570 */
2166
1ba90e3a
TR		 2167static const struct acpi_device_id ibm_pci_device_ids[] = {
2168 {PCI_ROOT_HID_STRING, 0},
2169 {"", 0},
2170};
2171
d94a7f16
HMH		 2172static struct tp_acpi_drv_struct ibm_dock_acpidriver[2] = {
2173 {
2174 .notify = dock_notify,
2175 .handle = &dock_handle,
2176 .type = ACPI_SYSTEM_NOTIFY,
2177 },
2178 {
996fba08
HMH		 2179 /* THIS ONE MUST NEVER BE USED FOR DRIVER AUTOLOADING.
2180 * We just use it to get notifications of dock hotplug
2181 * in very old thinkpads */
1ba90e3a 2182 .hid = ibm_pci_device_ids,
d94a7f16
HMH		 2183 .notify = dock_notify,
2184 .handle = &pci_handle,
2185 .type = ACPI_SYSTEM_NOTIFY,
2186 },
2187};
2188
2189static struct ibm_struct dock_driver_data[2] = {
2190 {
2191 .name = "dock",
2192 .read = dock_read,
2193 .write = dock_write,
2194 .acpi = &ibm_dock_acpidriver[0],
2195 },
2196 {
2197 .name = "dock",
2198 .acpi = &ibm_dock_acpidriver[1],
2199 },
2200};
2201
1da177e4
LT		 2202#define dock_docked() (_sta(dock_handle) & 1)
2203
a5763f22 2204static int __init dock_init(struct ibm_init_struct *iibm)
5fba344c 2205{
fe08bc4b
HMH		 2206 vdbg_printk(TPACPI_DBG_INIT, "initializing dock subdriver\n");
2207
8d376cd6 2208 IBM_ACPIHANDLE_INIT(dock);
5fba344c 2209
fe08bc4b
HMH		 2210 vdbg_printk(TPACPI_DBG_INIT, "dock is %s\n",
2211 str_supported(dock_handle != NULL));
2212
5fba344c
HMH		 2213 return (dock_handle)? 0 : 1;
2214}
2215
d94a7f16
HMH		 2216static int __init dock_init2(struct ibm_init_struct *iibm)
2217{
2218 int dock2_needed;
2219
2220 vdbg_printk(TPACPI_DBG_INIT, "initializing dock subdriver part 2\n");
2221
2222 if (dock_driver_data[0].flags.acpi_driver_registered &&
2223 dock_driver_data[0].flags.acpi_notify_installed) {
2224 IBM_ACPIHANDLE_INIT(pci);
2225 dock2_needed = (pci_handle != NULL);
2226 vdbg_printk(TPACPI_DBG_INIT,
2227 "dock PCI handler for the TP 570 is %s\n",
2228 str_supported(dock2_needed));
2229 } else {
2230 vdbg_printk(TPACPI_DBG_INIT,
2231 "dock subdriver part 2 not required\n");
2232 dock2_needed = 0;
2233 }
2234
2235 return (dock2_needed)? 0 : 1;
2236}
2237
56b6aeb0
HMH		 2238static void dock_notify(struct ibm_struct *ibm, u32 event)
2239{
2240 int docked = dock_docked();
1ba90e3a
TR		 2241 int pci = ibm->acpi->hid && ibm->acpi->device &&
2242 acpi_match_device_ids(ibm->acpi->device, ibm_pci_device_ids);
962ce8ca 2243 int data;
56b6aeb0
HMH		 2244
2245 if (event == 1 && !pci) /* 570 */
962ce8ca 2246 data = 1; /* button */
56b6aeb0 2247 else if (event == 1 && pci) /* 570 */
962ce8ca 2248 data = 3; /* dock */
56b6aeb0 2249 else if (event == 3 && docked)
962ce8ca 2250 data = 1; /* button */
56b6aeb0 2251 else if (event == 3 && !docked)
962ce8ca 2252 data = 2; /* undock */
56b6aeb0 2253 else if (event == 0 && docked)
962ce8ca 2254 data = 3; /* dock */
56b6aeb0
HMH		 2255 else {
2256 printk(IBM_ERR "unknown dock event %d, status %d\n",
2257 event, _sta(dock_handle));
962ce8ca 2258 data = 0; /* unknown */
56b6aeb0 2259 }
14e04fb3 2260 acpi_bus_generate_proc_event(ibm->acpi->device, event, data);
962ce8ca
ZR		 2261 acpi_bus_generate_netlink_event(ibm->acpi->device->pnp.device_class,
2262 ibm->acpi->device->dev.bus_id,
2263 event, data);
56b6aeb0
HMH		 2264}
2265
78f81cc4 2266static int dock_read(char *p)
1da177e4
LT		 2267{
2268 int len = 0;
2269 int docked = dock_docked();
2270
2271 if (!dock_handle)
2272 len += sprintf(p + len, "status:\t\tnot supported\n");
2273 else if (!docked)
2274 len += sprintf(p + len, "status:\t\tundocked\n");
2275 else {
2276 len += sprintf(p + len, "status:\t\tdocked\n");
2277 len += sprintf(p + len, "commands:\tdock, undock\n");
2278 }
2279
2280 return len;
2281}
2282
78f81cc4 2283static int dock_write(char *buf)
1da177e4
LT		 2284{
2285 char *cmd;
2286
2287 if (!dock_docked())
78f81cc4 2288 return -ENODEV;
1da177e4
LT		 2289
2290 while ((cmd = next_cmd(&buf))) {
2291 if (strlencmp(cmd, "undock") == 0) {
78f81cc4
BD		 2292 if (!acpi_evalf(dock_handle, NULL, "_DCK", "vd", 0) ||
2293 !acpi_evalf(dock_handle, NULL, "_EJ0", "vd", 1))
56b6aeb0
HMH		 2294 return -EIO;
2295 } else if (strlencmp(cmd, "dock") == 0) {
2296 if (!acpi_evalf(dock_handle, NULL, "_DCK", "vd", 1))
2297 return -EIO;
2298 } else
2299 return -EINVAL;
1da177e4 2300 }
56b6aeb0
HMH		 2301
2302 return 0;
1da177e4 2303}
56b6aeb0 2304
85998248 2305#endif /* CONFIG_THINKPAD_ACPI_DOCK */
56b6aeb0
HMH		 2306
2307/*************************************************************************
2308 * Bay subdriver
2309 */
1da177e4 2310
85998248 2311#ifdef CONFIG_THINKPAD_ACPI_BAY
56b6aeb0
HMH		 2312IBM_HANDLE(bay, root, "\\_SB.PCI.IDE.SECN.MAST", /* 570 */
2313 "\\_SB.PCI0.IDE0.IDES.IDSM", /* 600e/x, 770e, 770x */
2314 "\\_SB.PCI0.SATA.SCND.MSTR", /* T60, X60, Z60 */
2315 "\\_SB.PCI0.IDE0.SCND.MSTR", /* all others */
2316 ); /* A21e, R30, R31 */
2317IBM_HANDLE(bay_ej, bay, "_EJ3", /* 600e/x, A2xm/p, A3x */
2318 "_EJ0", /* all others */
2319 ); /* 570,A21e,G4x,R30,R31,R32,R40e,R50e */
2320IBM_HANDLE(bay2, root, "\\_SB.PCI0.IDE0.PRIM.SLAV", /* A3x, R32 */
2321 "\\_SB.PCI0.IDE0.IDEP.IDPS", /* 600e/x, 770e, 770x */
2322 ); /* all others */
2323IBM_HANDLE(bay2_ej, bay2, "_EJ3", /* 600e/x, 770e, A3x */
2324 "_EJ0", /* 770x */
2325 ); /* all others */
2326
a5763f22 2327static int __init bay_init(struct ibm_init_struct *iibm)
1da177e4 2328{
fe08bc4b
HMH		 2329 vdbg_printk(TPACPI_DBG_INIT, "initializing bay subdriver\n");
2330
8d376cd6 2331 IBM_ACPIHANDLE_INIT(bay);
5fba344c 2332 if (bay_handle)
8d376cd6
HMH		 2333 IBM_ACPIHANDLE_INIT(bay_ej);
2334 IBM_ACPIHANDLE_INIT(bay2);
5fba344c 2335 if (bay2_handle)
8d376cd6 2336 IBM_ACPIHANDLE_INIT(bay2_ej);
5fba344c 2337
d8fd94d9
HMH		 2338 tp_features.bay_status = bay_handle &&
2339 acpi_evalf(bay_handle, NULL, "_STA", "qv");
2340 tp_features.bay_status2 = bay2_handle &&
2341 acpi_evalf(bay2_handle, NULL, "_STA", "qv");
78f81cc4 2342
d8fd94d9
HMH		 2343 tp_features.bay_eject = bay_handle && bay_ej_handle &&
2344 (strlencmp(bay_ej_path, "_EJ0") == 0 || experimental);
2345 tp_features.bay_eject2 = bay2_handle && bay2_ej_handle &&
2346 (strlencmp(bay2_ej_path, "_EJ0") == 0 || experimental);
1da177e4 2347
fe08bc4b
HMH		 2348 vdbg_printk(TPACPI_DBG_INIT,
2349 "bay 1: status %s, eject %s; bay 2: status %s, eject %s\n",
d8fd94d9
HMH		 2350 str_supported(tp_features.bay_status),
2351 str_supported(tp_features.bay_eject),
2352 str_supported(tp_features.bay_status2),
2353 str_supported(tp_features.bay_eject2));
fe08bc4b 2354
d8fd94d9
HMH		 2355 return (tp_features.bay_status || tp_features.bay_eject ||
2356 tp_features.bay_status2 || tp_features.bay_eject2)? 0 : 1;
1da177e4
LT		 2357}
2358
56b6aeb0
HMH		 2359static void bay_notify(struct ibm_struct *ibm, u32 event)
2360{
14e04fb3 2361 acpi_bus_generate_proc_event(ibm->acpi->device, event, 0);
962ce8ca
ZR		 2362 acpi_bus_generate_netlink_event(ibm->acpi->device->pnp.device_class,
2363 ibm->acpi->device->dev.bus_id,
2364 event, 0);
56b6aeb0
HMH		 2365}
2366
78f81cc4
BD		 2367#define bay_occupied(b) (_sta(b##_handle) & 1)
2368
2369static int bay_read(char *p)
1da177e4
LT		 2370{
2371 int len = 0;
78f81cc4
BD		 2372 int occupied = bay_occupied(bay);
2373 int occupied2 = bay_occupied(bay2);
2374 int eject, eject2;
2375
d8fd94d9
HMH		 2376 len += sprintf(p + len, "status:\t\t%s\n",
2377 tp_features.bay_status ?
2378 (occupied ? "occupied" : "unoccupied") :
2379 "not supported");
2380 if (tp_features.bay_status2)
78f81cc4
BD		 2381 len += sprintf(p + len, "status2:\t%s\n", occupied2 ?
2382 "occupied" : "unoccupied");
2383
d8fd94d9
HMH		 2384 eject = tp_features.bay_eject && occupied;
2385 eject2 = tp_features.bay_eject2 && occupied2;
78f81cc4
BD		 2386
2387 if (eject && eject2)
2388 len += sprintf(p + len, "commands:\teject, eject2\n");
2389 else if (eject)
1da177e4 2390 len += sprintf(p + len, "commands:\teject\n");
78f81cc4
BD		 2391 else if (eject2)
2392 len += sprintf(p + len, "commands:\teject2\n");
1da177e4
LT		 2393
2394 return len;
2395}
2396
78f81cc4 2397static int bay_write(char *buf)
1da177e4
LT		 2398{
2399 char *cmd;
2400
d8fd94d9 2401 if (!tp_features.bay_eject && !tp_features.bay_eject2)
78f81cc4
BD		 2402 return -ENODEV;
2403
1da177e4 2404 while ((cmd = next_cmd(&buf))) {
d8fd94d9 2405 if (tp_features.bay_eject && strlencmp(cmd, "eject") == 0) {
78f81cc4
BD		 2406 if (!acpi_evalf(bay_ej_handle, NULL, NULL, "vd", 1))
2407 return -EIO;
d8fd94d9 2408 } else if (tp_features.bay_eject2 &&
78f81cc4
BD		 2409 strlencmp(cmd, "eject2") == 0) {
2410 if (!acpi_evalf(bay2_ej_handle, NULL, NULL, "vd", 1))
1da177e4
LT		 2411 return -EIO;
2412 } else
2413 return -EINVAL;
2414 }
2415
2416 return 0;
78f81cc4 2417}
a5763f22 2418
8d376cd6
HMH		 2419static struct tp_acpi_drv_struct ibm_bay_acpidriver = {
2420 .notify = bay_notify,
2421 .handle = &bay_handle,
2422 .type = ACPI_SYSTEM_NOTIFY,
2423};
2424
a5763f22
HMH		 2425static struct ibm_struct bay_driver_data = {
2426 .name = "bay",
2427 .read = bay_read,
2428 .write = bay_write,
8d376cd6 2429 .acpi = &ibm_bay_acpidriver,
a5763f22
HMH		 2430};
2431
85998248 2432#endif /* CONFIG_THINKPAD_ACPI_BAY */
1da177e4 2433
56b6aeb0
HMH		 2434/*************************************************************************
2435 * CMOS subdriver
2436 */
2437
b616004c
HMH		 2438/* sysfs cmos_command -------------------------------------------------- */
2439static ssize_t cmos_command_store(struct device *dev,
2440 struct device_attribute *attr,
2441 const char *buf, size_t count)
2442{
2443 unsigned long cmos_cmd;
2444 int res;
2445
2446 if (parse_strtoul(buf, 21, &cmos_cmd))
2447 return -EINVAL;
2448
2449 res = issue_thinkpad_cmos_command(cmos_cmd);
2450 return (res)? res : count;
2451}
2452
2453static struct device_attribute dev_attr_cmos_command =
2454 __ATTR(cmos_command, S_IWUSR, NULL, cmos_command_store);
2455
2456/* --------------------------------------------------------------------- */
2457
a5763f22 2458static int __init cmos_init(struct ibm_init_struct *iibm)
5fba344c 2459{
b616004c
HMH		 2460 int res;
2461
fe08bc4b
HMH		 2462 vdbg_printk(TPACPI_DBG_INIT,
2463 "initializing cmos commands subdriver\n");
2464
8d376cd6 2465 IBM_ACPIHANDLE_INIT(cmos);
5fba344c 2466
fe08bc4b
HMH		 2467 vdbg_printk(TPACPI_DBG_INIT, "cmos commands are %s\n",
2468 str_supported(cmos_handle != NULL));
b616004c
HMH		 2469
2470 res = device_create_file(&tpacpi_pdev->dev, &dev_attr_cmos_command);
2471 if (res)
2472 return res;
2473
5fba344c
HMH		 2474 return (cmos_handle)? 0 : 1;
2475}
2476
b616004c
HMH		 2477static void cmos_exit(void)
2478{
2479 device_remove_file(&tpacpi_pdev->dev, &dev_attr_cmos_command);
2480}
2481
78f81cc4 2482static int cmos_read(char *p)
1da177e4
LT		 2483{
2484 int len = 0;
2485
78f81cc4
BD		 2486 /* cmos not supported on 570, 600e/x, 770e, 770x, A21e, A2xm/p,
2487 R30, R31, T20-22, X20-21 */
1da177e4
LT		 2488 if (!cmos_handle)
2489 len += sprintf(p + len, "status:\t\tnot supported\n");
2490 else {
2491 len += sprintf(p + len, "status:\t\tsupported\n");
78f81cc4 2492 len += sprintf(p + len, "commands:\t<cmd> (<cmd> is 0-21)\n");
1da177e4
LT		 2493 }
2494
2495 return len;
2496}
2497
78f81cc4 2498static int cmos_write(char *buf)
1da177e4
LT		 2499{
2500 char *cmd;
c9bea99c 2501 int cmos_cmd, res;
1da177e4
LT		 2502
2503 while ((cmd = next_cmd(&buf))) {
78f81cc4
BD		 2504 if (sscanf(cmd, "%u", &cmos_cmd) == 1 &&
2505 cmos_cmd >= 0 && cmos_cmd <= 21) {
1da177e4
LT		 2506 /* cmos_cmd set */
2507 } else
2508 return -EINVAL;
2509
c9bea99c
HMH		 2510 res = issue_thinkpad_cmos_command(cmos_cmd);
2511 if (res)
2512 return res;
1da177e4
LT		 2513 }
2514
2515 return 0;
78f81cc4
BD		 2516}
2517
a5763f22
HMH		 2518static struct ibm_struct cmos_driver_data = {
2519 .name = "cmos",
2520 .read = cmos_read,
2521 .write = cmos_write,
b616004c 2522 .exit = cmos_exit,
a5763f22 2523};
56b6aeb0
HMH		 2524
2525/*************************************************************************
2526 * LED subdriver
2527 */
2528
9a8e1738 2529static enum led_access_mode led_supported;
78f81cc4 2530
56b6aeb0
HMH		 2531IBM_HANDLE(led, ec, "SLED", /* 570 */
2532 "SYSL", /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20-21 */
2533 "LED", /* all others */
2534 ); /* R30, R31 */
2535
a5763f22 2536static int __init led_init(struct ibm_init_struct *iibm)
78f81cc4 2537{
fe08bc4b
HMH		 2538 vdbg_printk(TPACPI_DBG_INIT, "initializing LED subdriver\n");
2539
8d376cd6 2540 IBM_ACPIHANDLE_INIT(led);
5fba344c 2541
78f81cc4
BD		 2542 if (!led_handle)
2543 /* led not supported on R30, R31 */
efa27145 2544 led_supported = TPACPI_LED_NONE;
78f81cc4
BD		 2545 else if (strlencmp(led_path, "SLED") == 0)
2546 /* 570 */
efa27145 2547 led_supported = TPACPI_LED_570;
78f81cc4
BD		 2548 else if (strlencmp(led_path, "SYSL") == 0)
2549 /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20-21 */
efa27145 2550 led_supported = TPACPI_LED_OLD;
78f81cc4
BD		 2551 else
2552 /* all others */
efa27145 2553 led_supported = TPACPI_LED_NEW;
78f81cc4 2554
fe08bc4b
HMH		 2555 vdbg_printk(TPACPI_DBG_INIT, "LED commands are %s, mode %d\n",
2556 str_supported(led_supported), led_supported);
2557
5fba344c 2558 return (led_supported != TPACPI_LED_NONE)? 0 : 1;
78f81cc4
BD		 2559}
2560
2561#define led_status(s) ((s) == 0 ? "off" : ((s) == 1 ? "on" : "blinking"))
2562
2563static int led_read(char *p)
1da177e4
LT		 2564{
2565 int len = 0;
2566
78f81cc4
BD		 2567 if (!led_supported) {
2568 len += sprintf(p + len, "status:\t\tnot supported\n");
2569 return len;
2570 }
2571 len += sprintf(p + len, "status:\t\tsupported\n");
2572
efa27145 2573 if (led_supported == TPACPI_LED_570) {
78f81cc4
BD		 2574 /* 570 */
2575 int i, status;
2576 for (i = 0; i < 8; i++) {
2577 if (!acpi_evalf(ec_handle,
2578 &status, "GLED", "dd", 1 << i))
2579 return -EIO;
2580 len += sprintf(p + len, "%d:\t\t%s\n",
2581 i, led_status(status));
2582 }
2583 }
2584
1da177e4 2585 len += sprintf(p + len, "commands:\t"
78f81cc4 2586 "<led> on, <led> off, <led> blink (<led> is 0-7)\n");
1da177e4
LT		 2587
2588 return len;
2589}
2590
78f81cc4
BD		 2591/* off, on, blink */
2592static const int led_sled_arg1[] = { 0, 1, 3 };
2593static const int led_exp_hlbl[] = { 0, 0, 1 }; /* led# * */
2594static const int led_exp_hlcl[] = { 0, 1, 1 }; /* led# * */
2595static const int led_led_arg1[] = { 0, 0x80, 0xc0 };
2596
78f81cc4 2597static int led_write(char *buf)
1da177e4
LT		 2598{
2599 char *cmd;
78f81cc4
BD		 2600 int led, ind, ret;
2601
2602 if (!led_supported)
2603 return -ENODEV;
1da177e4
LT		 2604
2605 while ((cmd = next_cmd(&buf))) {
78f81cc4 2606 if (sscanf(cmd, "%d", &led) != 1 || led < 0 || led > 7)
1da177e4
LT		 2607 return -EINVAL;
2608
78f81cc4
BD		 2609 if (strstr(cmd, "off")) {
2610 ind = 0;
1da177e4 2611 } else if (strstr(cmd, "on")) {
78f81cc4
BD		 2612 ind = 1;
2613 } else if (strstr(cmd, "blink")) {
2614 ind = 2;
1da177e4
LT		 2615 } else
2616 return -EINVAL;
78f81cc4 2617
efa27145 2618 if (led_supported == TPACPI_LED_570) {
78f81cc4
BD		 2619 /* 570 */
2620 led = 1 << led;
1da177e4 2621 if (!acpi_evalf(led_handle, NULL, NULL, "vdd",
78f81cc4 2622 led, led_sled_arg1[ind]))
1da177e4 2623 return -EIO;
efa27145 2624 } else if (led_supported == TPACPI_LED_OLD) {
78f81cc4
BD		 2625 /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20 */
2626 led = 1 << led;
efa27145 2627 ret = ec_write(TPACPI_LED_EC_HLMS, led);
78f81cc4
BD		 2628 if (ret >= 0)
2629 ret =
efa27145 2630 ec_write(TPACPI_LED_EC_HLBL,
e062e034 2631 led * led_exp_hlbl[ind]);
78f81cc4
BD		 2632 if (ret >= 0)
2633 ret =
efa27145 2634 ec_write(TPACPI_LED_EC_HLCL,
e062e034 2635 led * led_exp_hlcl[ind]);
78f81cc4
BD		 2636 if (ret < 0)
2637 return ret;
2638 } else {
2639 /* all others */
2640 if (!acpi_evalf(led_handle, NULL, NULL, "vdd",
2641 led, led_led_arg1[ind]))
1da177e4 2642 return -EIO;
78f81cc4
BD		 2643 }
2644 }
2645
2646 return 0;
2647}
2648
a5763f22
HMH		 2649static struct ibm_struct led_driver_data = {
2650 .name = "led",
2651 .read = led_read,
2652 .write = led_write,
2653};
2654
56b6aeb0
HMH		 2655/*************************************************************************
2656 * Beep subdriver
2657 */
2658
2659IBM_HANDLE(beep, ec, "BEEP"); /* all except R30, R31 */
2660
a5763f22 2661static int __init beep_init(struct ibm_init_struct *iibm)
5fba344c 2662{
fe08bc4b
HMH		 2663 vdbg_printk(TPACPI_DBG_INIT, "initializing beep subdriver\n");
2664
8d376cd6 2665 IBM_ACPIHANDLE_INIT(beep);
5fba344c 2666
fe08bc4b
HMH		 2667 vdbg_printk(TPACPI_DBG_INIT, "beep is %s\n",
2668 str_supported(beep_handle != NULL));
2669
5fba344c
HMH		 2670 return (beep_handle)? 0 : 1;
2671}
2672
78f81cc4
BD		 2673static int beep_read(char *p)
2674{
2675 int len = 0;
2676
2677 if (!beep_handle)
2678 len += sprintf(p + len, "status:\t\tnot supported\n");
2679 else {
2680 len += sprintf(p + len, "status:\t\tsupported\n");
2681 len += sprintf(p + len, "commands:\t<cmd> (<cmd> is 0-17)\n");
2682 }
2683
2684 return len;
2685}
2686
2687static int beep_write(char *buf)
2688{
2689 char *cmd;
2690 int beep_cmd;
2691
2692 if (!beep_handle)
2693 return -ENODEV;
2694
2695 while ((cmd = next_cmd(&buf))) {
2696 if (sscanf(cmd, "%u", &beep_cmd) == 1 &&
2697 beep_cmd >= 0 && beep_cmd <= 17) {
2698 /* beep_cmd set */
2699 } else
2700 return -EINVAL;
2701 if (!acpi_evalf(beep_handle, NULL, NULL, "vdd", beep_cmd, 0))
2702 return -EIO;
2703 }
2704
2705 return 0;
2706}
2707
a5763f22
HMH		 2708static struct ibm_struct beep_driver_data = {
2709 .name = "beep",
2710 .read = beep_read,
2711 .write = beep_write,
2712};
2713
56b6aeb0
HMH		 2714/*************************************************************************
2715 * Thermal subdriver
2716 */
78f81cc4 2717
a26f878a 2718static enum thermal_access_mode thermal_read_mode;
78f81cc4 2719
2c37aa4e
HMH		 2720/* sysfs temp##_input -------------------------------------------------- */
2721
2722static ssize_t thermal_temp_input_show(struct device *dev,
2723 struct device_attribute *attr,
2724 char *buf)
2725{
2726 struct sensor_device_attribute *sensor_attr =
2727 to_sensor_dev_attr(attr);
2728 int idx = sensor_attr->index;
2729 s32 value;
2730 int res;
2731
2732 res = thermal_get_sensor(idx, &value);
2733 if (res)
2734 return res;
2735 if (value == TP_EC_THERMAL_TMP_NA * 1000)
2736 return -ENXIO;
2737
2738 return snprintf(buf, PAGE_SIZE, "%d\n", value);
2739}
2740
2741#define THERMAL_SENSOR_ATTR_TEMP(_idxA, _idxB) \
2742 SENSOR_ATTR(temp##_idxA##_input, S_IRUGO, thermal_temp_input_show, NULL, _idxB)
2743
2744static struct sensor_device_attribute sensor_dev_attr_thermal_temp_input[] = {
2745 THERMAL_SENSOR_ATTR_TEMP(1, 0),
2746 THERMAL_SENSOR_ATTR_TEMP(2, 1),
2747 THERMAL_SENSOR_ATTR_TEMP(3, 2),
2748 THERMAL_SENSOR_ATTR_TEMP(4, 3),
2749 THERMAL_SENSOR_ATTR_TEMP(5, 4),
2750 THERMAL_SENSOR_ATTR_TEMP(6, 5),
2751 THERMAL_SENSOR_ATTR_TEMP(7, 6),
2752 THERMAL_SENSOR_ATTR_TEMP(8, 7),
2753 THERMAL_SENSOR_ATTR_TEMP(9, 8),
2754 THERMAL_SENSOR_ATTR_TEMP(10, 9),
2755 THERMAL_SENSOR_ATTR_TEMP(11, 10),
2756 THERMAL_SENSOR_ATTR_TEMP(12, 11),
2757 THERMAL_SENSOR_ATTR_TEMP(13, 12),
2758 THERMAL_SENSOR_ATTR_TEMP(14, 13),
2759 THERMAL_SENSOR_ATTR_TEMP(15, 14),
2760 THERMAL_SENSOR_ATTR_TEMP(16, 15),
2761};
2762
2763#define THERMAL_ATTRS(X) \
2764 &sensor_dev_attr_thermal_temp_input[X].dev_attr.attr
2765
2766static struct attribute *thermal_temp_input_attr[] = {
2767 THERMAL_ATTRS(8),
2768 THERMAL_ATTRS(9),
2769 THERMAL_ATTRS(10),
2770 THERMAL_ATTRS(11),
2771 THERMAL_ATTRS(12),
2772 THERMAL_ATTRS(13),
2773 THERMAL_ATTRS(14),
2774 THERMAL_ATTRS(15),
2775 THERMAL_ATTRS(0),
2776 THERMAL_ATTRS(1),
2777 THERMAL_ATTRS(2),
2778 THERMAL_ATTRS(3),
2779 THERMAL_ATTRS(4),
2780 THERMAL_ATTRS(5),
2781 THERMAL_ATTRS(6),
2782 THERMAL_ATTRS(7),
2783 NULL
2784};
2785
2786static const struct attribute_group thermal_temp_input16_group = {
2787 .attrs = thermal_temp_input_attr
2788};
2789
2790static const struct attribute_group thermal_temp_input8_group = {
2791 .attrs = &thermal_temp_input_attr[8]
2792};
2793
2794#undef THERMAL_SENSOR_ATTR_TEMP
2795#undef THERMAL_ATTRS
2796
2797/* --------------------------------------------------------------------- */
2798
a5763f22 2799static int __init thermal_init(struct ibm_init_struct *iibm)
78f81cc4 2800{
60eb0b35
HMH		 2801 u8 t, ta1, ta2;
2802 int i;
5fba344c 2803 int acpi_tmp7;
2c37aa4e 2804 int res;
5fba344c 2805
fe08bc4b
HMH		 2806 vdbg_printk(TPACPI_DBG_INIT, "initializing thermal subdriver\n");
2807
5fba344c 2808 acpi_tmp7 = acpi_evalf(ec_handle, NULL, "TMP7", "qv");
60eb0b35 2809
3d6f99ca 2810 if (thinkpad_id.ec_model) {
60eb0b35
HMH		 2811 /*
2812 * Direct EC access mode: sensors at registers
2813 * 0x78-0x7F, 0xC0-0xC7. Registers return 0x00 for
2814 * non-implemented, thermal sensors return 0x80 when
2815 * not available
2816 */
78f81cc4 2817
60eb0b35
HMH		 2818 ta1 = ta2 = 0;
2819 for (i = 0; i < 8; i++) {
04cc862c 2820 if (acpi_ec_read(TP_EC_THERMAL_TMP0 + i, &t)) {
60eb0b35
HMH		 2821 ta1 |= t;
2822 } else {
2823 ta1 = 0;
2824 break;
2825 }
04cc862c 2826 if (acpi_ec_read(TP_EC_THERMAL_TMP8 + i, &t)) {
60eb0b35
HMH		 2827 ta2 |= t;
2828 } else {
2829 ta1 = 0;
2830 break;
2831 }
2832 }
2833 if (ta1 == 0) {
2834 /* This is sheer paranoia, but we handle it anyway */
2835 if (acpi_tmp7) {
2836 printk(IBM_ERR
2837 "ThinkPad ACPI EC access misbehaving, "
2838 "falling back to ACPI TMPx access mode\n");
efa27145 2839 thermal_read_mode = TPACPI_THERMAL_ACPI_TMP07;
60eb0b35
HMH		 2840 } else {
2841 printk(IBM_ERR
2842 "ThinkPad ACPI EC access misbehaving, "
2843 "disabling thermal sensors access\n");
efa27145 2844 thermal_read_mode = TPACPI_THERMAL_NONE;
60eb0b35
HMH		 2845 }
2846 } else {
2847 thermal_read_mode =
2848 (ta2 != 0) ?
efa27145 2849 TPACPI_THERMAL_TPEC_16 : TPACPI_THERMAL_TPEC_8;
60eb0b35
HMH		 2850 }
2851 } else if (acpi_tmp7) {
a26f878a
HMH		 2852 if (acpi_evalf(ec_handle, NULL, "UPDT", "qv")) {
2853 /* 600e/x, 770e, 770x */
efa27145 2854 thermal_read_mode = TPACPI_THERMAL_ACPI_UPDT;
a26f878a
HMH		 2855 } else {
2856 /* Standard ACPI TMPx access, max 8 sensors */
efa27145 2857 thermal_read_mode = TPACPI_THERMAL_ACPI_TMP07;
a26f878a
HMH		 2858 }
2859 } else {
2860 /* temperatures not supported on 570, G4x, R30, R31, R32 */
efa27145 2861 thermal_read_mode = TPACPI_THERMAL_NONE;
a26f878a 2862 }
78f81cc4 2863
fe08bc4b
HMH		 2864 vdbg_printk(TPACPI_DBG_INIT, "thermal is %s, mode %d\n",
2865 str_supported(thermal_read_mode != TPACPI_THERMAL_NONE),
2866 thermal_read_mode);
2867
2c37aa4e
HMH		 2868 switch(thermal_read_mode) {
2869 case TPACPI_THERMAL_TPEC_16:
2870 res = sysfs_create_group(&tpacpi_pdev->dev.kobj,
2871 &thermal_temp_input16_group);
2872 if (res)
2873 return res;
2874 break;
2875 case TPACPI_THERMAL_TPEC_8:
2876 case TPACPI_THERMAL_ACPI_TMP07:
2877 case TPACPI_THERMAL_ACPI_UPDT:
2878 res = sysfs_create_group(&tpacpi_pdev->dev.kobj,
2879 &thermal_temp_input8_group);
2880 if (res)
2881 return res;
2882 break;
2883 case TPACPI_THERMAL_NONE:
2884 default:
2885 return 1;
2886 }
2887
2888 return 0;
2889}
2890
2891static void thermal_exit(void)
2892{
2893 switch(thermal_read_mode) {
2894 case TPACPI_THERMAL_TPEC_16:
2895 sysfs_remove_group(&tpacpi_pdev->dev.kobj,
2896 &thermal_temp_input16_group);
2897 break;
2898 case TPACPI_THERMAL_TPEC_8:
2899 case TPACPI_THERMAL_ACPI_TMP07:
2900 case TPACPI_THERMAL_ACPI_UPDT:
2901 sysfs_remove_group(&tpacpi_pdev->dev.kobj,
2902 &thermal_temp_input16_group);
2903 break;
2904 case TPACPI_THERMAL_NONE:
2905 default:
2906 break;
2907 }
78f81cc4
BD		 2908}
2909
04cc862c
HMH		 2910/* idx is zero-based */
2911static int thermal_get_sensor(int idx, s32 *value)
78f81cc4 2912{
04cc862c 2913 int t;
60eb0b35 2914 s8 tmp;
04cc862c 2915 char tmpi[5];
78f81cc4 2916
04cc862c 2917 t = TP_EC_THERMAL_TMP0;
78f81cc4 2918
a26f878a 2919 switch (thermal_read_mode) {
efa27145
HMH		 2920#if TPACPI_MAX_THERMAL_SENSORS >= 16
2921 case TPACPI_THERMAL_TPEC_16:
04cc862c
HMH		 2922 if (idx >= 8 && idx <= 15) {
2923 t = TP_EC_THERMAL_TMP8;
2924 idx -= 8;
60eb0b35
HMH		 2925 }
2926 /* fallthrough */
2927#endif
efa27145 2928 case TPACPI_THERMAL_TPEC_8:
04cc862c
HMH		 2929 if (idx <= 7) {
2930 if (!acpi_ec_read(t + idx, &tmp))
78f81cc4 2931 return -EIO;
04cc862c
HMH		 2932 *value = tmp * 1000;
2933 return 0;
60eb0b35 2934 }
04cc862c 2935 break;
78f81cc4 2936
efa27145 2937 case TPACPI_THERMAL_ACPI_UPDT:
04cc862c
HMH		 2938 if (idx <= 7) {
2939 snprintf(tmpi, sizeof(tmpi), "TMP%c", '0' + idx);
2940 if (!acpi_evalf(ec_handle, NULL, "UPDT", "v"))
2941 return -EIO;
78f81cc4
BD		 2942 if (!acpi_evalf(ec_handle, &t, tmpi, "d"))
2943 return -EIO;
04cc862c
HMH		 2944 *value = (t - 2732) * 100;
2945 return 0;
78f81cc4 2946 }
04cc862c 2947 break;
78f81cc4 2948
efa27145 2949 case TPACPI_THERMAL_ACPI_TMP07:
04cc862c
HMH		 2950 if (idx <= 7) {
2951 snprintf(tmpi, sizeof(tmpi), "TMP%c", '0' + idx);
78f81cc4
BD		 2952 if (!acpi_evalf(ec_handle, &t, tmpi, "d"))
2953 return -EIO;
a8fba3da
HMH		 2954 if (t > 127 || t < -127)
2955 t = TP_EC_THERMAL_TMP_NA;
04cc862c
HMH		 2956 *value = t * 1000;
2957 return 0;
78f81cc4 2958 }
04cc862c 2959 break;
78f81cc4 2960
efa27145 2961 case TPACPI_THERMAL_NONE:
a26f878a 2962 default:
04cc862c
HMH		 2963 return -ENOSYS;
2964 }
2965
2966 return -EINVAL;
2967}
2968
2969static int thermal_get_sensors(struct ibm_thermal_sensors_struct *s)
2970{
2971 int res, i;
2972 int n;
2973
2974 n = 8;
2975 i = 0;
2976
2977 if (!s)
2978 return -EINVAL;
2979
2980 if (thermal_read_mode == TPACPI_THERMAL_TPEC_16)
2981 n = 16;
2982
2983 for(i = 0 ; i < n; i++) {
2984 res = thermal_get_sensor(i, &s->temp[i]);
2985 if (res)
2986 return res;
78f81cc4 2987 }
04cc862c
HMH		 2988
2989 return n;
a26f878a
HMH		 2990}
2991
2992static int thermal_read(char *p)
2993{
2994 int len = 0;
2995 int n, i;
2996 struct ibm_thermal_sensors_struct t;
2997
2998 n = thermal_get_sensors(&t);
2999 if (unlikely(n < 0))
3000 return n;
3001
3002 len += sprintf(p + len, "temperatures:\t");
3003
3004 if (n > 0) {
3005 for (i = 0; i < (n - 1); i++)
3006 len += sprintf(p + len, "%d ", t.temp[i] / 1000);
3007 len += sprintf(p + len, "%d\n", t.temp[i] / 1000);
3008 } else
3009 len += sprintf(p + len, "not supported\n");
78f81cc4
BD		 3010
3011 return len;
3012}
3013
a5763f22
HMH		 3014static struct ibm_struct thermal_driver_data = {
3015 .name = "thermal",
3016 .read = thermal_read,
2c37aa4e 3017 .exit = thermal_exit,
a5763f22
HMH		 3018};
3019
56b6aeb0
HMH		 3020/*************************************************************************
3021 * EC Dump subdriver
3022 */
3023
78f81cc4
BD		 3024static u8 ecdump_regs[256];
3025
3026static int ecdump_read(char *p)
3027{
3028 int len = 0;
3029 int i, j;
3030 u8 v;
3031
3032 len += sprintf(p + len, "EC "
3033 " +00 +01 +02 +03 +04 +05 +06 +07"
3034 " +08 +09 +0a +0b +0c +0d +0e +0f\n");
3035 for (i = 0; i < 256; i += 16) {
3036 len += sprintf(p + len, "EC 0x%02x:", i);
3037 for (j = 0; j < 16; j++) {
3038 if (!acpi_ec_read(i + j, &v))
3039 break;
3040 if (v != ecdump_regs[i + j])
3041 len += sprintf(p + len, " *%02x", v);
3042 else
3043 len += sprintf(p + len, " %02x", v);
3044 ecdump_regs[i + j] = v;
3045 }
3046 len += sprintf(p + len, "\n");
3047 if (j != 16)
3048 break;
3049 }
3050
3051 /* These are way too dangerous to advertise openly... */
3052#if 0
3053 len += sprintf(p + len, "commands:\t0x<offset> 0x<value>"
3054 " (<offset> is 00-ff, <value> is 00-ff)\n");
3055 len += sprintf(p + len, "commands:\t0x<offset> <value> "
3056 " (<offset> is 00-ff, <value> is 0-255)\n");
3057#endif
3058 return len;
3059}
3060
3061static int ecdump_write(char *buf)
3062{
3063 char *cmd;
3064 int i, v;
3065
3066 while ((cmd = next_cmd(&buf))) {
3067 if (sscanf(cmd, "0x%x 0x%x", &i, &v) == 2) {
3068 /* i and v set */
3069 } else if (sscanf(cmd, "0x%x %u", &i, &v) == 2) {
3070 /* i and v set */
3071 } else
3072 return -EINVAL;
3073 if (i >= 0 && i < 256 && v >= 0 && v < 256) {
3074 if (!acpi_ec_write(i, v))
1da177e4
LT		 3075 return -EIO;
3076 } else
3077 return -EINVAL;
3078 }
3079
3080 return 0;
78f81cc4
BD		 3081}
3082
a5763f22
HMH		 3083static struct ibm_struct ecdump_driver_data = {
3084 .name = "ecdump",
3085 .read = ecdump_read,
3086 .write = ecdump_write,
92641177 3087 .flags.experimental = 1,
a5763f22
HMH		 3088};
3089
56b6aeb0
HMH		 3090/*************************************************************************
3091 * Backlight/brightness subdriver
3092 */
3093
94954cc6 3094static struct backlight_device *ibm_backlight_device;
56b6aeb0
HMH		 3095
3096static struct backlight_ops ibm_backlight_data = {
3097 .get_brightness = brightness_get,
3098 .update_status = brightness_update_status,
3099};
3100
f432255e
HMH		 3101static struct mutex brightness_mutex;
3102
a5763f22 3103static int __init brightness_init(struct ibm_init_struct *iibm)
56b6aeb0
HMH		 3104{
3105 int b;
3106
fe08bc4b
HMH		 3107 vdbg_printk(TPACPI_DBG_INIT, "initializing brightness subdriver\n");
3108
f432255e
HMH		 3109 mutex_init(&brightness_mutex);
3110
24d3b774
HMH		 3111 if (!brightness_mode) {
3112 if (thinkpad_id.vendor == PCI_VENDOR_ID_LENOVO)
3113 brightness_mode = 2;
3114 else
3115 brightness_mode = 3;
3116
3117 dbg_printk(TPACPI_DBG_INIT, "selected brightness_mode=%d\n",
3118 brightness_mode);
3119 }
3120
3121 if (brightness_mode > 3)
3122 return -EINVAL;
3123
56b6aeb0
HMH		 3124 b = brightness_get(NULL);
3125 if (b < 0)
24d3b774 3126 return 1;
56b6aeb0 3127
7d5a015e
HMH		 3128 ibm_backlight_device = backlight_device_register(
3129 TPACPI_BACKLIGHT_DEV_NAME, NULL, NULL,
3130 &ibm_backlight_data);
56b6aeb0
HMH		 3131 if (IS_ERR(ibm_backlight_device)) {
3132 printk(IBM_ERR "Could not register backlight device\n");
3133 return PTR_ERR(ibm_backlight_device);
3134 }
fe08bc4b 3135 vdbg_printk(TPACPI_DBG_INIT, "brightness is supported\n");
56b6aeb0
HMH		 3136
3137 ibm_backlight_device->props.max_brightness = 7;
3138 ibm_backlight_device->props.brightness = b;
3139 backlight_update_status(ibm_backlight_device);
3140
3141 return 0;
3142}
3143
3144static void brightness_exit(void)
3145{
3146 if (ibm_backlight_device) {
fe08bc4b
HMH		 3147 vdbg_printk(TPACPI_DBG_EXIT,
3148 "calling backlight_device_unregister()\n");
56b6aeb0
HMH		 3149 backlight_device_unregister(ibm_backlight_device);
3150 ibm_backlight_device = NULL;
3151 }
3152}
3153
3154static int brightness_update_status(struct backlight_device *bd)
3155{
3156 return brightness_set(
3157 (bd->props.fb_blank == FB_BLANK_UNBLANK &&
3158 bd->props.power == FB_BLANK_UNBLANK) ?
3159 bd->props.brightness : 0);
3160}
3161
24d3b774
HMH		 3162/*
3163 * ThinkPads can read brightness from two places: EC 0x31, or
3164 * CMOS NVRAM byte 0x5E, bits 0-3.
3165 */
8acb0250
HM		 3166static int brightness_get(struct backlight_device *bd)
3167{
24d3b774 3168 u8 lec = 0, lcmos = 0, level = 0;
8acb0250 3169
24d3b774
HMH		 3170 if (brightness_mode & 1) {
3171 if (!acpi_ec_read(brightness_offset, &lec))
3172 return -EIO;
3173 lec &= 7;
3174 level = lec;
3175 };
3176 if (brightness_mode & 2) {
3177 lcmos = (nvram_read_byte(TP_NVRAM_ADDR_BRIGHTNESS)
3178 & TP_NVRAM_MASK_LEVEL_BRIGHTNESS)
3179 >> TP_NVRAM_POS_LEVEL_BRIGHTNESS;
3180 level = lcmos;
3181 }
3182
3183 if (brightness_mode == 3 && lec != lcmos) {
3184 printk(IBM_ERR
3185 "CMOS NVRAM (%u) and EC (%u) do not agree "
3186 "on display brightness level\n",
3187 (unsigned int) lcmos,
3188 (unsigned int) lec);
3189 return -EIO;
3190 }
fb87a811 3191
8d297264 3192 return level;
8acb0250
HM		 3193}
3194
8acb0250 3195static int brightness_set(int value)
1da177e4 3196{
f432255e
HMH		 3197 int cmos_cmd, inc, i, res;
3198 int current_value;
8acb0250 3199
24d3b774
HMH		 3200 if (value > 7)
3201 return -EINVAL;
8acb0250 3202
f432255e
HMH		 3203 res = mutex_lock_interruptible(&brightness_mutex);
3204 if (res < 0)
3205 return res;
3206
3207 current_value = brightness_get(NULL);
3208 if (current_value < 0) {
3209 res = current_value;
3210 goto errout;
3211 }
3212
24d3b774
HMH		 3213 cmos_cmd = value > current_value ?
3214 TP_CMOS_BRIGHTNESS_UP :
3215 TP_CMOS_BRIGHTNESS_DOWN;
8acb0250 3216 inc = value > current_value ? 1 : -1;
24d3b774 3217
f432255e 3218 res = 0;
8acb0250 3219 for (i = current_value; i != value; i += inc) {
24d3b774 3220 if ((brightness_mode & 2) &&
f432255e
HMH		 3221 issue_thinkpad_cmos_command(cmos_cmd)) {
3222 res = -EIO;
3223 goto errout;
3224 }
24d3b774 3225 if ((brightness_mode & 1) &&
f432255e
HMH		 3226 !acpi_ec_write(brightness_offset, i + inc)) {
3227 res = -EIO;
3228 goto errout;;
3229 }
8acb0250
HM		 3230 }
3231
f432255e
HMH		 3232errout:
3233 mutex_unlock(&brightness_mutex);
3234 return res;
8acb0250
HM		 3235}
3236
56b6aeb0
HMH		 3237static int brightness_read(char *p)
3238{
3239 int len = 0;
3240 int level;
3241
3242 if ((level = brightness_get(NULL)) < 0) {
3243 len += sprintf(p + len, "level:\t\tunreadable\n");
3244 } else {
3245 len += sprintf(p + len, "level:\t\t%d\n", level & 0x7);
3246 len += sprintf(p + len, "commands:\tup, down\n");
3247 len += sprintf(p + len, "commands:\tlevel <level>"
3248 " (<level> is 0-7)\n");
3249 }
3250
3251 return len;
3252}
3253
8acb0250
HM		 3254static int brightness_write(char *buf)
3255{
3256 int level;
78f81cc4 3257 int new_level;
1da177e4 3258 char *cmd;
1da177e4
LT		 3259
3260 while ((cmd = next_cmd(&buf))) {
8acb0250
HM		 3261 if ((level = brightness_get(NULL)) < 0)
3262 return level;
78f81cc4
BD		 3263 level &= 7;
3264
3265 if (strlencmp(cmd, "up") == 0) {
3266 new_level = level == 7 ? 7 : level + 1;
3267 } else if (strlencmp(cmd, "down") == 0) {
3268 new_level = level == 0 ? 0 : level - 1;
3269 } else if (sscanf(cmd, "level %d", &new_level) == 1 &&
3270 new_level >= 0 && new_level <= 7) {
3271 /* new_level set */
3272 } else
3273 return -EINVAL;
3274
8acb0250 3275 brightness_set(new_level);
78f81cc4
BD		 3276 }
3277
3278 return 0;
3279}
3280
a5763f22
HMH		 3281static struct ibm_struct brightness_driver_data = {
3282 .name = "brightness",
3283 .read = brightness_read,
3284 .write = brightness_write,
3285 .exit = brightness_exit,
3286};
3287
56b6aeb0
HMH		 3288/*************************************************************************
3289 * Volume subdriver
3290 */
fb87a811 3291
78f81cc4
BD		 3292static int volume_read(char *p)
3293{
3294 int len = 0;
3295 u8 level;
3296
3297 if (!acpi_ec_read(volume_offset, &level)) {
3298 len += sprintf(p + len, "level:\t\tunreadable\n");
3299 } else {
3300 len += sprintf(p + len, "level:\t\t%d\n", level & 0xf);
3301 len += sprintf(p + len, "mute:\t\t%s\n", onoff(level, 6));
3302 len += sprintf(p + len, "commands:\tup, down, mute\n");
3303 len += sprintf(p + len, "commands:\tlevel <level>"
3304 " (<level> is 0-15)\n");
3305 }
3306
3307 return len;
3308}
3309
78f81cc4
BD		 3310static int volume_write(char *buf)
3311{
3312 int cmos_cmd, inc, i;
3313 u8 level, mute;
3314 int new_level, new_mute;
3315 char *cmd;
3316
3317 while ((cmd = next_cmd(&buf))) {
3318 if (!acpi_ec_read(volume_offset, &level))
3319 return -EIO;
3320 new_mute = mute = level & 0x40;
3321 new_level = level = level & 0xf;
3322
3323 if (strlencmp(cmd, "up") == 0) {
3324 if (mute)
3325 new_mute = 0;
3326 else
3327 new_level = level == 15 ? 15 : level + 1;
3328 } else if (strlencmp(cmd, "down") == 0) {
3329 if (mute)
3330 new_mute = 0;
3331 else
3332 new_level = level == 0 ? 0 : level - 1;
3333 } else if (sscanf(cmd, "level %d", &new_level) == 1 &&
3334 new_level >= 0 && new_level <= 15) {
3335 /* new_level set */
3336 } else if (strlencmp(cmd, "mute") == 0) {
3337 new_mute = 0x40;
1da177e4
LT		 3338 } else
3339 return -EINVAL;
3340
78f81cc4 3341 if (new_level != level) { /* mute doesn't change */
56b6aeb0 3342 cmos_cmd = new_level > level ? TP_CMOS_VOLUME_UP : TP_CMOS_VOLUME_DOWN;
78f81cc4
BD		 3343 inc = new_level > level ? 1 : -1;
3344
c9bea99c 3345 if (mute && (issue_thinkpad_cmos_command(cmos_cmd) ||
78f81cc4
BD		 3346 !acpi_ec_write(volume_offset, level)))
3347 return -EIO;
3348
3349 for (i = level; i != new_level; i += inc)
c9bea99c 3350 if (issue_thinkpad_cmos_command(cmos_cmd) ||
78f81cc4
BD		 3351 !acpi_ec_write(volume_offset, i + inc))
3352 return -EIO;
3353
c9bea99c 3354 if (mute && (issue_thinkpad_cmos_command(TP_CMOS_VOLUME_MUTE) ||
78f81cc4
BD		 3355 !acpi_ec_write(volume_offset,
3356 new_level + mute)))
3357 return -EIO;
3358 }
3359
3360 if (new_mute != mute) { /* level doesn't change */
56b6aeb0 3361 cmos_cmd = new_mute ? TP_CMOS_VOLUME_MUTE : TP_CMOS_VOLUME_UP;
78f81cc4 3362
c9bea99c 3363 if (issue_thinkpad_cmos_command(cmos_cmd) ||
78f81cc4
BD		 3364 !acpi_ec_write(volume_offset, level + new_mute))
3365 return -EIO;
3366 }
3367 }
3368
3369 return 0;
3370}
3371
a5763f22
HMH		 3372static struct ibm_struct volume_driver_data = {
3373 .name = "volume",
3374 .read = volume_read,
3375 .write = volume_write,
3376};
56b6aeb0
HMH		 3377
3378/*************************************************************************
3379 * Fan subdriver
3380 */
3381
3382/*
3383 * FAN ACCESS MODES
3384 *
efa27145 3385 * TPACPI_FAN_RD_ACPI_GFAN:
56b6aeb0
HMH		 3386 * ACPI GFAN method: returns fan level
3387 *
efa27145 3388 * see TPACPI_FAN_WR_ACPI_SFAN
f51d1a39 3389 * EC 0x2f (HFSP) not available if GFAN exists
56b6aeb0 3390 *
efa27145 3391 * TPACPI_FAN_WR_ACPI_SFAN:
56b6aeb0
HMH		 3392 * ACPI SFAN method: sets fan level, 0 (stop) to 7 (max)
3393 *
f51d1a39
HMH		 3394 * EC 0x2f (HFSP) might be available *for reading*, but do not use
3395 * it for writing.
56b6aeb0 3396 *
efa27145 3397 * TPACPI_FAN_WR_TPEC:
f51d1a39
HMH		 3398 * ThinkPad EC register 0x2f (HFSP): fan control loop mode
3399 * Supported on almost all ThinkPads
56b6aeb0
HMH		 3400 *
3401 * Fan speed changes of any sort (including those caused by the
3402 * disengaged mode) are usually done slowly by the firmware as the
3403 * maximum ammount of fan duty cycle change per second seems to be
3404 * limited.
3405 *
3406 * Reading is not available if GFAN exists.
3407 * Writing is not available if SFAN exists.
3408 *
3409 * Bits
3410 * 7 automatic mode engaged;
3411 * (default operation mode of the ThinkPad)
3412 * fan level is ignored in this mode.
f51d1a39 3413 * 6 full speed mode (takes precedence over bit 7);
56b6aeb0 3414 * not available on all thinkpads. May disable
f51d1a39
HMH		 3415 * the tachometer while the fan controller ramps up
3416 * the speed (which can take up to a few *minutes*).
3417 * Speeds up fan to 100% duty-cycle, which is far above
3418 * the standard RPM levels. It is not impossible that
3419 * it could cause hardware damage.
56b6aeb0
HMH		 3420 * 5-3 unused in some models. Extra bits for fan level
3421 * in others, but still useless as all values above
3422 * 7 map to the same speed as level 7 in these models.
3423 * 2-0 fan level (0..7 usually)
3424 * 0x00 = stop
3425 * 0x07 = max (set when temperatures critical)
3426 * Some ThinkPads may have other levels, see
efa27145 3427 * TPACPI_FAN_WR_ACPI_FANS (X31/X40/X41)
56b6aeb0
HMH		 3428 *
3429 * FIRMWARE BUG: on some models, EC 0x2f might not be initialized at
3430 * boot. Apparently the EC does not intialize it, so unless ACPI DSDT
3431 * does so, its initial value is meaningless (0x07).
3432 *
3433 * For firmware bugs, refer to:
3434 * http://thinkwiki.org/wiki/Embedded_Controller_Firmware#Firmware_Issues
3435 *
3436 * ----
3437 *
3438 * ThinkPad EC register 0x84 (LSB), 0x85 (MSB):
3439 * Main fan tachometer reading (in RPM)
3440 *
3441 * This register is present on all ThinkPads with a new-style EC, and
3442 * it is known not to be present on the A21m/e, and T22, as there is
3443 * something else in offset 0x84 according to the ACPI DSDT. Other
3444 * ThinkPads from this same time period (and earlier) probably lack the
3445 * tachometer as well.
3446 *
3447 * Unfortunately a lot of ThinkPads with new-style ECs but whose firwmare
3448 * was never fixed by IBM to report the EC firmware version string
3449 * probably support the tachometer (like the early X models), so
3450 * detecting it is quite hard. We need more data to know for sure.
3451 *
3452 * FIRMWARE BUG: always read 0x84 first, otherwise incorrect readings
3453 * might result.
3454 *
f51d1a39
HMH		 3455 * FIRMWARE BUG: may go stale while the EC is switching to full speed
3456 * mode.
56b6aeb0
HMH		 3457 *
3458 * For firmware bugs, refer to:
3459 * http://thinkwiki.org/wiki/Embedded_Controller_Firmware#Firmware_Issues
3460 *
efa27145 3461 * TPACPI_FAN_WR_ACPI_FANS:
56b6aeb0
HMH		 3462 * ThinkPad X31, X40, X41. Not available in the X60.
3463 *
3464 * FANS ACPI handle: takes three arguments: low speed, medium speed,
3465 * high speed. ACPI DSDT seems to map these three speeds to levels
3466 * as follows: STOP LOW LOW MED MED HIGH HIGH HIGH HIGH
3467 * (this map is stored on FAN0..FAN8 as "0,1,1,2,2,3,3,3,3")
3468 *
3469 * The speeds are stored on handles
3470 * (FANA:FAN9), (FANC:FANB), (FANE:FAND).
3471 *
3472 * There are three default speed sets, acessible as handles:
3473 * FS1L,FS1M,FS1H; FS2L,FS2M,FS2H; FS3L,FS3M,FS3H
3474 *
3475 * ACPI DSDT switches which set is in use depending on various
3476 * factors.
3477 *
efa27145 3478 * TPACPI_FAN_WR_TPEC is also available and should be used to
56b6aeb0
HMH		 3479 * command the fan. The X31/X40/X41 seems to have 8 fan levels,
3480 * but the ACPI tables just mention level 7.
3481 */
3482
69ba91cb
HMH		 3483static enum fan_status_access_mode fan_status_access_mode;
3484static enum fan_control_access_mode fan_control_access_mode;
3485static enum fan_control_commands fan_control_commands;
78f81cc4 3486
778b4d74 3487static u8 fan_control_initial_status;
fe98a52c 3488static u8 fan_control_desired_level;
778b4d74 3489
25c68a33 3490static void fan_watchdog_fire(struct work_struct *ignored);
16663a87 3491static int fan_watchdog_maxinterval;
25c68a33 3492static DECLARE_DELAYED_WORK(fan_watchdog_task, fan_watchdog_fire);
16663a87 3493
56b6aeb0
HMH		 3494IBM_HANDLE(fans, ec, "FANS"); /* X31, X40, X41 */
3495IBM_HANDLE(gfan, ec, "GFAN", /* 570 */
3496 "\\FSPD", /* 600e/x, 770e, 770x */
3497 ); /* all others */
3498IBM_HANDLE(sfan, ec, "SFAN", /* 570 */
3499 "JFNS", /* 770x-JL */
3500 ); /* all others */
3501
fe98a52c
HMH		 3502/*
3503 * SYSFS fan layout: hwmon compatible (device)
3504 *
3505 * pwm*_enable:
3506 * 0: "disengaged" mode
3507 * 1: manual mode
3508 * 2: native EC "auto" mode (recommended, hardware default)
3509 *
3510 * pwm*: set speed in manual mode, ignored otherwise.
3511 * 0 is level 0; 255 is level 7. Intermediate points done with linear
3512 * interpolation.
3513 *
3514 * fan*_input: tachometer reading, RPM
3515 *
3516 *
3517 * SYSFS fan layout: extensions
3518 *
3519 * fan_watchdog (driver):
3520 * fan watchdog interval in seconds, 0 disables (default), max 120
3521 */
3522
3523/* sysfs fan pwm1_enable ----------------------------------------------- */
3524static ssize_t fan_pwm1_enable_show(struct device *dev,
3525 struct device_attribute *attr,
3526 char *buf)
3527{
3528 int res, mode;
3529 u8 status;
3530
3531 res = fan_get_status_safe(&status);
3532 if (res)
3533 return res;
3534
3535 if (unlikely(tp_features.fan_ctrl_status_undef)) {
3536 if (status != fan_control_initial_status) {
3537 tp_features.fan_ctrl_status_undef = 0;
3538 } else {
3539 /* Return most likely status. In fact, it
3540 * might be the only possible status */
3541 status = TP_EC_FAN_AUTO;
3542 }
3543 }
3544
3545 if (status & TP_EC_FAN_FULLSPEED) {
3546 mode = 0;
3547 } else if (status & TP_EC_FAN_AUTO) {
3548 mode = 2;
3549 } else
3550 mode = 1;
3551
3552 return snprintf(buf, PAGE_SIZE, "%d\n", mode);
3553}
3554
3555static ssize_t fan_pwm1_enable_store(struct device *dev,
3556 struct device_attribute *attr,
3557 const char *buf, size_t count)
3558{
3559 unsigned long t;
3560 int res, level;
3561
3562 if (parse_strtoul(buf, 2, &t))
3563 return -EINVAL;
3564
3565 switch (t) {
3566 case 0:
3567 level = TP_EC_FAN_FULLSPEED;
3568 break;
3569 case 1:
3570 level = TPACPI_FAN_LAST_LEVEL;
3571 break;
3572 case 2:
3573 level = TP_EC_FAN_AUTO;
3574 break;
3575 case 3:
3576 /* reserved for software-controlled auto mode */
3577 return -ENOSYS;
3578 default:
3579 return -EINVAL;
3580 }
3581
3582 res = fan_set_level_safe(level);
c573ddb9
HMH		 3583 if (res == -ENXIO)
3584 return -EINVAL;
3585 else if (res < 0)
fe98a52c
HMH		 3586 return res;
3587
3588 fan_watchdog_reset();
3589
3590 return count;
3591}
3592
3593static struct device_attribute dev_attr_fan_pwm1_enable =
3594 __ATTR(pwm1_enable, S_IWUSR | S_IRUGO,
3595 fan_pwm1_enable_show, fan_pwm1_enable_store);
3596
3597/* sysfs fan pwm1 ------------------------------------------------------ */
3598static ssize_t fan_pwm1_show(struct device *dev,
3599 struct device_attribute *attr,
3600 char *buf)
3601{
3602 int res;
3603 u8 status;
3604
3605 res = fan_get_status_safe(&status);
3606 if (res)
3607 return res;
3608
3609 if (unlikely(tp_features.fan_ctrl_status_undef)) {
3610 if (status != fan_control_initial_status) {
3611 tp_features.fan_ctrl_status_undef = 0;
3612 } else {
3613 status = TP_EC_FAN_AUTO;
3614 }
3615 }
3616
3617 if ((status &
3618 (TP_EC_FAN_AUTO | TP_EC_FAN_FULLSPEED)) != 0)
3619 status = fan_control_desired_level;
3620
3621 if (status > 7)
3622 status = 7;
3623
3624 return snprintf(buf, PAGE_SIZE, "%u\n", (status * 255) / 7);
3625}
3626
3627static ssize_t fan_pwm1_store(struct device *dev,
3628 struct device_attribute *attr,
3629 const char *buf, size_t count)
3630{
3631 unsigned long s;
3632 int rc;
3633 u8 status, newlevel;
3634
3635 if (parse_strtoul(buf, 255, &s))
3636 return -EINVAL;
3637
3638 /* scale down from 0-255 to 0-7 */
3639 newlevel = (s >> 5) & 0x07;
3640
3641 rc = mutex_lock_interruptible(&fan_mutex);
3642 if (rc < 0)
3643 return rc;
3644
3645 rc = fan_get_status(&status);
3646 if (!rc && (status &
3647 (TP_EC_FAN_AUTO | TP_EC_FAN_FULLSPEED)) == 0) {
3648 rc = fan_set_level(newlevel);
c573ddb9
HMH		 3649 if (rc == -ENXIO)
3650 rc = -EINVAL;
3651 else if (!rc) {
fe98a52c 3652 fan_update_desired_level(newlevel);
ca4ac2f4
HMH		 3653 fan_watchdog_reset();
3654 }
fe98a52c
HMH		 3655 }
3656
3657 mutex_unlock(&fan_mutex);
3658 return (rc)? rc : count;
3659}
3660
3661static struct device_attribute dev_attr_fan_pwm1 =
3662 __ATTR(pwm1, S_IWUSR | S_IRUGO,
3663 fan_pwm1_show, fan_pwm1_store);
3664
3665/* sysfs fan fan1_input ------------------------------------------------ */
3666static ssize_t fan_fan1_input_show(struct device *dev,
3667 struct device_attribute *attr,
3668 char *buf)
3669{
3670 int res;
3671 unsigned int speed;
3672
3673 res = fan_get_speed(&speed);
3674 if (res < 0)
3675 return res;
3676
3677 return snprintf(buf, PAGE_SIZE, "%u\n", speed);
3678}
3679
3680static struct device_attribute dev_attr_fan_fan1_input =
3681 __ATTR(fan1_input, S_IRUGO,
3682 fan_fan1_input_show, NULL);
3683
3684/* sysfs fan fan_watchdog (driver) ------------------------------------- */
3685static ssize_t fan_fan_watchdog_show(struct device_driver *drv,
3686 char *buf)
3687{
3688 return snprintf(buf, PAGE_SIZE, "%u\n", fan_watchdog_maxinterval);
3689}
3690
3691static ssize_t fan_fan_watchdog_store(struct device_driver *drv,
3692 const char *buf, size_t count)
3693{
3694 unsigned long t;
3695
3696 if (parse_strtoul(buf, 120, &t))
3697 return -EINVAL;
3698
ecf2a80a
HMH		 3699 if (!fan_control_allowed)
3700 return -EPERM;
3701
fe98a52c
HMH		 3702 fan_watchdog_maxinterval = t;
3703 fan_watchdog_reset();
3704
3705 return count;
3706}
3707
3708static DRIVER_ATTR(fan_watchdog, S_IWUSR | S_IRUGO,
3709 fan_fan_watchdog_show, fan_fan_watchdog_store);
3710
3711/* --------------------------------------------------------------------- */
3712static struct attribute *fan_attributes[] = {
3713 &dev_attr_fan_pwm1_enable.attr, &dev_attr_fan_pwm1.attr,
3714 &dev_attr_fan_fan1_input.attr,
3715 NULL
3716};
3717
3718static const struct attribute_group fan_attr_group = {
3719 .attrs = fan_attributes,
3720};
3721
a5763f22 3722static int __init fan_init(struct ibm_init_struct *iibm)
78f81cc4 3723{
fe98a52c
HMH		 3724 int rc;
3725
fe08bc4b
HMH		 3726 vdbg_printk(TPACPI_DBG_INIT, "initializing fan subdriver\n");
3727
40ca9fdf 3728 mutex_init(&fan_mutex);
efa27145
HMH		 3729 fan_status_access_mode = TPACPI_FAN_NONE;
3730 fan_control_access_mode = TPACPI_FAN_WR_NONE;
69ba91cb 3731 fan_control_commands = 0;
16663a87 3732 fan_watchdog_maxinterval = 0;
d8fd94d9 3733 tp_features.fan_ctrl_status_undef = 0;
fe98a52c 3734 fan_control_desired_level = 7;
78f81cc4 3735
8d376cd6
HMH		 3736 IBM_ACPIHANDLE_INIT(fans);
3737 IBM_ACPIHANDLE_INIT(gfan);
3738 IBM_ACPIHANDLE_INIT(sfan);
5fba344c 3739
78f81cc4
BD		 3740 if (gfan_handle) {
3741 /* 570, 600e/x, 770e, 770x */
efa27145 3742 fan_status_access_mode = TPACPI_FAN_RD_ACPI_GFAN;
69ba91cb
HMH		 3743 } else {
3744 /* all other ThinkPads: note that even old-style
3745 * ThinkPad ECs supports the fan control register */
778b4d74
HMH		 3746 if (likely(acpi_ec_read(fan_status_offset,
3747 &fan_control_initial_status))) {
efa27145 3748 fan_status_access_mode = TPACPI_FAN_RD_TPEC;
778b4d74
HMH		 3749
3750 /* In some ThinkPads, neither the EC nor the ACPI
3751 * DSDT initialize the fan status, and it ends up
3752 * being set to 0x07 when it *could* be either
3753 * 0x07 or 0x80.
3754 *
3755 * Enable for TP-1Y (T43), TP-78 (R51e),
3756 * TP-76 (R52), TP-70 (T43, R52), which are known
3757 * to be buggy. */
d5a2f2f1
HMH		 3758 if (fan_control_initial_status == 0x07) {
3759 switch (thinkpad_id.ec_model) {
3760 case 0x5931: /* TP-1Y */
3761 case 0x3837: /* TP-78 */
3762 case 0x3637: /* TP-76 */
3763 case 0x3037: /* TP-70 */
3764 printk(IBM_NOTICE
3765 "fan_init: initial fan status is "
3766 "unknown, assuming it is in auto "
3767 "mode\n");
3768 tp_features.fan_ctrl_status_undef = 1;
3769 ;;
3770 }
778b4d74 3771 }
69ba91cb
HMH		 3772 } else {
3773 printk(IBM_ERR
3774 "ThinkPad ACPI EC access misbehaving, "
3775 "fan status and control unavailable\n");
5fba344c 3776 return 1;
69ba91cb
HMH		 3777 }
3778 }
78f81cc4 3779
69ba91cb
HMH		 3780 if (sfan_handle) {
3781 /* 570, 770x-JL */
efa27145 3782 fan_control_access_mode = TPACPI_FAN_WR_ACPI_SFAN;
1c6a334e 3783 fan_control_commands |=
efa27145 3784 TPACPI_FAN_CMD_LEVEL | TPACPI_FAN_CMD_ENABLE;
78f81cc4 3785 } else {
69ba91cb
HMH		 3786 if (!gfan_handle) {
3787 /* gfan without sfan means no fan control */
3788 /* all other models implement TP EC 0x2f control */
3789
3790 if (fans_handle) {
a8b7a662 3791 /* X31, X40, X41 */
69ba91cb 3792 fan_control_access_mode =
efa27145 3793 TPACPI_FAN_WR_ACPI_FANS;
69ba91cb 3794 fan_control_commands |=
efa27145
HMH		 3795 TPACPI_FAN_CMD_SPEED |
3796 TPACPI_FAN_CMD_LEVEL |
3797 TPACPI_FAN_CMD_ENABLE;
69ba91cb 3798 } else {
efa27145 3799 fan_control_access_mode = TPACPI_FAN_WR_TPEC;
a12095c2 3800 fan_control_commands |=
efa27145
HMH		 3801 TPACPI_FAN_CMD_LEVEL |
3802 TPACPI_FAN_CMD_ENABLE;
69ba91cb
HMH		 3803 }
3804 }
3805 }
3806
fe08bc4b
HMH		 3807 vdbg_printk(TPACPI_DBG_INIT, "fan is %s, modes %d, %d\n",
3808 str_supported(fan_status_access_mode != TPACPI_FAN_NONE ||
3809 fan_control_access_mode != TPACPI_FAN_WR_NONE),
3810 fan_status_access_mode, fan_control_access_mode);
3811
ecf2a80a
HMH		 3812 /* fan control master switch */
3813 if (!fan_control_allowed) {
3814 fan_control_access_mode = TPACPI_FAN_WR_NONE;
3815 fan_control_commands = 0;
3816 dbg_printk(TPACPI_DBG_INIT,
3817 "fan control features disabled by parameter\n");
3818 }
3819
fe98a52c
HMH		 3820 /* update fan_control_desired_level */
3821 if (fan_status_access_mode != TPACPI_FAN_NONE)
3822 fan_get_status_safe(NULL);
3823
3824 if (fan_status_access_mode != TPACPI_FAN_NONE ||
3825 fan_control_access_mode != TPACPI_FAN_WR_NONE) {
3826 rc = sysfs_create_group(&tpacpi_pdev->dev.kobj,
3827 &fan_attr_group);
3828 if (!(rc < 0))
3829 rc = driver_create_file(&tpacpi_pdriver.driver,
3830 &driver_attr_fan_watchdog);
3831 if (rc < 0)
3832 return rc;
3833 return 0;
3834 } else
3835 return 1;
3836}
3837
3838/*
3839 * Call with fan_mutex held
3840 */
3841static void fan_update_desired_level(u8 status)
3842{
3843 if ((status &
3844 (TP_EC_FAN_AUTO | TP_EC_FAN_FULLSPEED)) == 0) {
3845 if (status > 7)
3846 fan_control_desired_level = 7;
3847 else
3848 fan_control_desired_level = status;
3849 }
69ba91cb 3850}
78f81cc4 3851
c52f0aa5 3852static int fan_get_status(u8 *status)
78f81cc4 3853{
c52f0aa5 3854 u8 s;
78f81cc4 3855
a8b7a662 3856 /* TODO:
efa27145 3857 * Add TPACPI_FAN_RD_ACPI_FANS ? */
a8b7a662 3858
3ef8a609 3859 switch (fan_status_access_mode) {
efa27145 3860 case TPACPI_FAN_RD_ACPI_GFAN:
78f81cc4 3861 /* 570, 600e/x, 770e, 770x */
c52f0aa5
HMH		 3862
3863 if (unlikely(!acpi_evalf(gfan_handle, &s, NULL, "d")))
1da177e4 3864 return -EIO;
78f81cc4 3865
c52f0aa5
HMH		 3866 if (likely(status))
3867 *status = s & 0x07;
3ef8a609
HMH		 3868
3869 break;
3870
efa27145 3871 case TPACPI_FAN_RD_TPEC:
78f81cc4 3872 /* all except 570, 600e/x, 770e, 770x */
c52f0aa5 3873 if (unlikely(!acpi_ec_read(fan_status_offset, &s)))
3ef8a609 3874 return -EIO;
78f81cc4 3875
c52f0aa5
HMH		 3876 if (likely(status))
3877 *status = s;
3878
3879 break;
3880
3881 default:
3882 return -ENXIO;
78f81cc4
BD		 3883 }
3884
c52f0aa5
HMH		 3885 return 0;
3886}
3887
fe98a52c
HMH		 3888static int fan_get_status_safe(u8 *status)
3889{
3890 int rc;
3891 u8 s;
3892
3893 rc = mutex_lock_interruptible(&fan_mutex);
3894 if (rc < 0)
3895 return rc;
3896 rc = fan_get_status(&s);
3897 if (!rc)
3898 fan_update_desired_level(s);
3899 mutex_unlock(&fan_mutex);
3900
3901 if (status)
3902 *status = s;
3903
3904 return rc;
3905}
3906
56b6aeb0
HMH		 3907static void fan_exit(void)
3908{
99fba3f8 3909 vdbg_printk(TPACPI_DBG_EXIT, "cancelling any pending fan watchdog tasks\n");
fe98a52c
HMH		 3910
3911 /* FIXME: can we really do this unconditionally? */
3912 sysfs_remove_group(&tpacpi_pdev->dev.kobj, &fan_attr_group);
3913 driver_remove_file(&tpacpi_pdriver.driver, &driver_attr_fan_watchdog);
3914
56b6aeb0
HMH		 3915 cancel_delayed_work(&fan_watchdog_task);
3916 flush_scheduled_work();
3917}
3918
c52f0aa5
HMH		 3919static int fan_get_speed(unsigned int *speed)
3920{
3921 u8 hi, lo;
3922
3923 switch (fan_status_access_mode) {
efa27145 3924 case TPACPI_FAN_RD_TPEC:
78f81cc4 3925 /* all except 570, 600e/x, 770e, 770x */
3ef8a609
HMH		 3926 if (unlikely(!acpi_ec_read(fan_rpm_offset, &lo) ||
3927 !acpi_ec_read(fan_rpm_offset + 1, &hi)))
3928 return -EIO;
3ef8a609 3929
c52f0aa5
HMH		 3930 if (likely(speed))
3931 *speed = (hi << 8) | lo;
3932
3933 break;
3934
3935 default:
3936 return -ENXIO;
3937 }
3938
3939 return 0;
3940}
3941
56b6aeb0 3942static void fan_watchdog_fire(struct work_struct *ignored)
16663a87 3943{
99fba3f8
HMH		 3944 int rc;
3945
8fef502e
HMH		 3946 if (tpacpi_lifecycle != TPACPI_LIFE_RUNNING)
3947 return;
3948
56b6aeb0 3949 printk(IBM_NOTICE "fan watchdog: enabling fan\n");
99fba3f8
HMH		 3950 rc = fan_set_enable();
3951 if (rc < 0) {
3952 printk(IBM_ERR "fan watchdog: error %d while enabling fan, "
3953 "will try again later...\n", -rc);
56b6aeb0
HMH		 3954 /* reschedule for later */
3955 fan_watchdog_reset();
3956 }
16663a87
HMH		 3957}
3958
3959static void fan_watchdog_reset(void)
3960{
94954cc6 3961 static int fan_watchdog_active;
16663a87 3962
4985cd0a
HMH		 3963 if (fan_control_access_mode == TPACPI_FAN_WR_NONE)
3964 return;
3965
16663a87
HMH		 3966 if (fan_watchdog_active)
3967 cancel_delayed_work(&fan_watchdog_task);
3968
8fef502e
HMH		 3969 if (fan_watchdog_maxinterval > 0 &&
3970 tpacpi_lifecycle != TPACPI_LIFE_EXITING) {
16663a87
HMH		 3971 fan_watchdog_active = 1;
3972 if (!schedule_delayed_work(&fan_watchdog_task,
3973 msecs_to_jiffies(fan_watchdog_maxinterval
3974 * 1000))) {
3975 printk(IBM_ERR "failed to schedule the fan watchdog, "
3976 "watchdog will not trigger\n");
3977 }
3978 } else
3979 fan_watchdog_active = 0;
3980}
3981
18ad7996 3982static int fan_set_level(int level)
78f81cc4 3983{
ecf2a80a
HMH		 3984 if (!fan_control_allowed)
3985 return -EPERM;
3986
18ad7996 3987 switch (fan_control_access_mode) {
efa27145 3988 case TPACPI_FAN_WR_ACPI_SFAN:
18ad7996 3989 if (level >= 0 && level <= 7) {
fe98a52c 3990 if (!acpi_evalf(sfan_handle, NULL, NULL, "vd", level))
78f81cc4 3991 return -EIO;
18ad7996
HMH		 3992 } else
3993 return -EINVAL;
3994 break;
3995
efa27145
HMH		 3996 case TPACPI_FAN_WR_ACPI_FANS:
3997 case TPACPI_FAN_WR_TPEC:
3998 if ((level != TP_EC_FAN_AUTO) &&
3999 (level != TP_EC_FAN_FULLSPEED) &&
a12095c2
HMH		 4000 ((level < 0) || (level > 7)))
4001 return -EINVAL;
4002
eaa7571b
HMH		 4003 /* safety net should the EC not support AUTO
4004 * or FULLSPEED mode bits and just ignore them */
4005 if (level & TP_EC_FAN_FULLSPEED)
4006 level |= 7; /* safety min speed 7 */
4007 else if (level & TP_EC_FAN_FULLSPEED)
4008 level |= 4; /* safety min speed 4 */
4009
fe98a52c 4010 if (!acpi_ec_write(fan_status_offset, level))
a12095c2 4011 return -EIO;
778b4d74 4012 else
d8fd94d9 4013 tp_features.fan_ctrl_status_undef = 0;
a12095c2
HMH		 4014 break;
4015
18ad7996
HMH		 4016 default:
4017 return -ENXIO;
4018 }
4019 return 0;
4020}
4021
fe98a52c
HMH		 4022static int fan_set_level_safe(int level)
4023{
4024 int rc;
4025
ecf2a80a
HMH		 4026 if (!fan_control_allowed)
4027 return -EPERM;
4028
fe98a52c
HMH		 4029 rc = mutex_lock_interruptible(&fan_mutex);
4030 if (rc < 0)
4031 return rc;
4032
4033 if (level == TPACPI_FAN_LAST_LEVEL)
4034 level = fan_control_desired_level;
4035
4036 rc = fan_set_level(level);
4037 if (!rc)
4038 fan_update_desired_level(level);
4039
4040 mutex_unlock(&fan_mutex);
4041 return rc;
4042}
4043
18ad7996
HMH		 4044static int fan_set_enable(void)
4045{
1c6a334e
HMH		 4046 u8 s;
4047 int rc;
4048
ecf2a80a
HMH		 4049 if (!fan_control_allowed)
4050 return -EPERM;
4051
40ca9fdf
HMH		 4052 rc = mutex_lock_interruptible(&fan_mutex);
4053 if (rc < 0)
4054 return rc;
4055
18ad7996 4056 switch (fan_control_access_mode) {
efa27145
HMH		 4057 case TPACPI_FAN_WR_ACPI_FANS:
4058 case TPACPI_FAN_WR_TPEC:
40ca9fdf
HMH		 4059 rc = fan_get_status(&s);
4060 if (rc < 0)
4061 break;
1c6a334e
HMH		 4062
4063 /* Don't go out of emergency fan mode */
eaa7571b
HMH		 4064 if (s != 7) {
4065 s &= 0x07;
4066 s |= TP_EC_FAN_AUTO | 4; /* min fan speed 4 */
4067 }
1c6a334e
HMH		 4068
4069 if (!acpi_ec_write(fan_status_offset, s))
40ca9fdf
HMH		 4070 rc = -EIO;
4071 else {
d8fd94d9 4072 tp_features.fan_ctrl_status_undef = 0;
40ca9fdf
HMH		 4073 rc = 0;
4074 }
1c6a334e
HMH		 4075 break;
4076
efa27145 4077 case TPACPI_FAN_WR_ACPI_SFAN:
40ca9fdf
HMH		 4078 rc = fan_get_status(&s);
4079 if (rc < 0)
4080 break;
1c6a334e
HMH		 4081
4082 s &= 0x07;
4083
4084 /* Set fan to at least level 4 */
eaa7571b 4085 s |= 4;
1c6a334e
HMH		 4086
4087 if (!acpi_evalf(sfan_handle, NULL, NULL, "vd", s))
40ca9fdf
HMH		 4088 rc= -EIO;
4089 else
4090 rc = 0;
18ad7996
HMH		 4091 break;
4092
4093 default:
40ca9fdf 4094 rc = -ENXIO;
18ad7996 4095 }
40ca9fdf
HMH		 4096
4097 mutex_unlock(&fan_mutex);
4098 return rc;
18ad7996
HMH		 4099}
4100
4101static int fan_set_disable(void)
4102{
40ca9fdf
HMH		 4103 int rc;
4104
ecf2a80a
HMH		 4105 if (!fan_control_allowed)
4106 return -EPERM;
4107
40ca9fdf
HMH		 4108 rc = mutex_lock_interruptible(&fan_mutex);
4109 if (rc < 0)
4110 return rc;
4111
4112 rc = 0;
18ad7996 4113 switch (fan_control_access_mode) {
efa27145
HMH		 4114 case TPACPI_FAN_WR_ACPI_FANS:
4115 case TPACPI_FAN_WR_TPEC:
18ad7996 4116 if (!acpi_ec_write(fan_status_offset, 0x00))
40ca9fdf 4117 rc = -EIO;
fe98a52c
HMH		 4118 else {
4119 fan_control_desired_level = 0;
d8fd94d9 4120 tp_features.fan_ctrl_status_undef = 0;
fe98a52c 4121 }
18ad7996
HMH		 4122 break;
4123
efa27145 4124 case TPACPI_FAN_WR_ACPI_SFAN:
1c6a334e 4125 if (!acpi_evalf(sfan_handle, NULL, NULL, "vd", 0x00))
40ca9fdf 4126 rc = -EIO;
fe98a52c
HMH		 4127 else
4128 fan_control_desired_level = 0;
1c6a334e
HMH		 4129 break;
4130
18ad7996 4131 default:
40ca9fdf 4132 rc = -ENXIO;
18ad7996 4133 }
40ca9fdf 4134
fe98a52c 4135
40ca9fdf
HMH		 4136 mutex_unlock(&fan_mutex);
4137 return rc;
56b6aeb0
HMH		 4138}
4139
4140static int fan_set_speed(int speed)
4141{
40ca9fdf
HMH		 4142 int rc;
4143
ecf2a80a
HMH		 4144 if (!fan_control_allowed)
4145 return -EPERM;
4146
40ca9fdf
HMH		 4147 rc = mutex_lock_interruptible(&fan_mutex);
4148 if (rc < 0)
4149 return rc;
4150
4151 rc = 0;
56b6aeb0 4152 switch (fan_control_access_mode) {
efa27145 4153 case TPACPI_FAN_WR_ACPI_FANS:
56b6aeb0
HMH		 4154 if (speed >= 0 && speed <= 65535) {
4155 if (!acpi_evalf(fans_handle, NULL, NULL, "vddd",
4156 speed, speed, speed))
40ca9fdf 4157 rc = -EIO;
56b6aeb0 4158 } else
40ca9fdf 4159 rc = -EINVAL;
56b6aeb0
HMH		 4160 break;
4161
4162 default:
40ca9fdf 4163 rc = -ENXIO;
56b6aeb0 4164 }
40ca9fdf
HMH		 4165
4166 mutex_unlock(&fan_mutex);
4167 return rc;
56b6aeb0
HMH		 4168}
4169
4170static int fan_read(char *p)
4171{
4172 int len = 0;
4173 int rc;
4174 u8 status;
4175 unsigned int speed = 0;
4176
4177 switch (fan_status_access_mode) {
efa27145 4178 case TPACPI_FAN_RD_ACPI_GFAN:
56b6aeb0 4179 /* 570, 600e/x, 770e, 770x */
fe98a52c 4180 if ((rc = fan_get_status_safe(&status)) < 0)
56b6aeb0
HMH		 4181 return rc;
4182
4183 len += sprintf(p + len, "status:\t\t%s\n"
4184 "level:\t\t%d\n",
4185 (status != 0) ? "enabled" : "disabled", status);
4186 break;
4187
efa27145 4188 case TPACPI_FAN_RD_TPEC:
56b6aeb0 4189 /* all except 570, 600e/x, 770e, 770x */
fe98a52c 4190 if ((rc = fan_get_status_safe(&status)) < 0)
56b6aeb0
HMH		 4191 return rc;
4192
d8fd94d9 4193 if (unlikely(tp_features.fan_ctrl_status_undef)) {
56b6aeb0 4194 if (status != fan_control_initial_status)
d8fd94d9 4195 tp_features.fan_ctrl_status_undef = 0;
56b6aeb0
HMH		 4196 else
4197 /* Return most likely status. In fact, it
4198 * might be the only possible status */
efa27145 4199 status = TP_EC_FAN_AUTO;
56b6aeb0
HMH		 4200 }
4201
4202 len += sprintf(p + len, "status:\t\t%s\n",
4203 (status != 0) ? "enabled" : "disabled");
4204
56b6aeb0
HMH		 4205 if ((rc = fan_get_speed(&speed)) < 0)
4206 return rc;
4207
4208 len += sprintf(p + len, "speed:\t\t%d\n", speed);
4209
efa27145 4210 if (status & TP_EC_FAN_FULLSPEED)
56b6aeb0
HMH		 4211 /* Disengaged mode takes precedence */
4212 len += sprintf(p + len, "level:\t\tdisengaged\n");
efa27145 4213 else if (status & TP_EC_FAN_AUTO)
56b6aeb0
HMH		 4214 len += sprintf(p + len, "level:\t\tauto\n");
4215 else
4216 len += sprintf(p + len, "level:\t\t%d\n", status);
4217 break;
4218
efa27145 4219 case TPACPI_FAN_NONE:
56b6aeb0
HMH		 4220 default:
4221 len += sprintf(p + len, "status:\t\tnot supported\n");
4222 }
4223
efa27145 4224 if (fan_control_commands & TPACPI_FAN_CMD_LEVEL) {
56b6aeb0
HMH		 4225 len += sprintf(p + len, "commands:\tlevel <level>");
4226
4227 switch (fan_control_access_mode) {
efa27145 4228 case TPACPI_FAN_WR_ACPI_SFAN:
56b6aeb0
HMH		 4229 len += sprintf(p + len, " (<level> is 0-7)\n");
4230 break;
4231
4232 default:
4233 len += sprintf(p + len, " (<level> is 0-7, "
fe98a52c 4234 "auto, disengaged, full-speed)\n");
56b6aeb0
HMH		 4235 break;
4236 }
4237 }
18ad7996 4238
efa27145 4239 if (fan_control_commands & TPACPI_FAN_CMD_ENABLE)
56b6aeb0
HMH		 4240 len += sprintf(p + len, "commands:\tenable, disable\n"
4241 "commands:\twatchdog <timeout> (<timeout> is 0 (off), "
4242 "1-120 (seconds))\n");
1da177e4 4243
efa27145 4244 if (fan_control_commands & TPACPI_FAN_CMD_SPEED)
56b6aeb0
HMH		 4245 len += sprintf(p + len, "commands:\tspeed <speed>"
4246 " (<speed> is 0-65535)\n");
4247
4248 return len;
78f81cc4
BD		 4249}
4250
18ad7996
HMH		 4251static int fan_write_cmd_level(const char *cmd, int *rc)
4252{
4253 int level;
4254
a12095c2 4255 if (strlencmp(cmd, "level auto") == 0)
efa27145 4256 level = TP_EC_FAN_AUTO;
fe98a52c
HMH		 4257 else if ((strlencmp(cmd, "level disengaged") == 0) |
4258 (strlencmp(cmd, "level full-speed") == 0))
efa27145 4259 level = TP_EC_FAN_FULLSPEED;
a12095c2 4260 else if (sscanf(cmd, "level %d", &level) != 1)
18ad7996
HMH		 4261 return 0;
4262
fe98a52c 4263 if ((*rc = fan_set_level_safe(level)) == -ENXIO)
18ad7996
HMH		 4264 printk(IBM_ERR "level command accepted for unsupported "
4265 "access mode %d", fan_control_access_mode);
4266
4267 return 1;
4268}
4269
4270static int fan_write_cmd_enable(const char *cmd, int *rc)
4271{
4272 if (strlencmp(cmd, "enable") != 0)
4273 return 0;
4274
4275 if ((*rc = fan_set_enable()) == -ENXIO)
4276 printk(IBM_ERR "enable command accepted for unsupported "
4277 "access mode %d", fan_control_access_mode);
4278
4279 return 1;
4280}
4281
4282static int fan_write_cmd_disable(const char *cmd, int *rc)
4283{
4284 if (strlencmp(cmd, "disable") != 0)
4285 return 0;
4286
4287 if ((*rc = fan_set_disable()) == -ENXIO)
4288 printk(IBM_ERR "disable command accepted for unsupported "
4289 "access mode %d", fan_control_access_mode);
4290
4291 return 1;
4292}
4293
4294static int fan_write_cmd_speed(const char *cmd, int *rc)
4295{
4296 int speed;
4297
a8b7a662
HMH		 4298 /* TODO:
4299 * Support speed <low> <medium> <high> ? */
4300
18ad7996
HMH		 4301 if (sscanf(cmd, "speed %d", &speed) != 1)
4302 return 0;
4303
4304 if ((*rc = fan_set_speed(speed)) == -ENXIO)
4305 printk(IBM_ERR "speed command accepted for unsupported "
4306 "access mode %d", fan_control_access_mode);
4307
4308 return 1;
4309}
4310
16663a87
HMH		 4311static int fan_write_cmd_watchdog(const char *cmd, int *rc)
4312{
4313 int interval;
4314
4315 if (sscanf(cmd, "watchdog %d", &interval) != 1)
4316 return 0;
4317
4318 if (interval < 0 || interval > 120)
4319 *rc = -EINVAL;
4320 else
4321 fan_watchdog_maxinterval = interval;
4322
4323 return 1;
4324}
4325
18ad7996
HMH		 4326static int fan_write(char *buf)
4327{
4328 char *cmd;
4329 int rc = 0;
4330
4331 while (!rc && (cmd = next_cmd(&buf))) {
efa27145 4332 if (!((fan_control_commands & TPACPI_FAN_CMD_LEVEL) &&
18ad7996 4333 fan_write_cmd_level(cmd, &rc)) &&
efa27145 4334 !((fan_control_commands & TPACPI_FAN_CMD_ENABLE) &&
18ad7996 4335 (fan_write_cmd_enable(cmd, &rc) ||
16663a87
HMH		 4336 fan_write_cmd_disable(cmd, &rc) ||
4337 fan_write_cmd_watchdog(cmd, &rc))) &&
efa27145 4338 !((fan_control_commands & TPACPI_FAN_CMD_SPEED) &&
18ad7996
HMH		 4339 fan_write_cmd_speed(cmd, &rc))
4340 )
4341 rc = -EINVAL;
16663a87
HMH		 4342 else if (!rc)
4343 fan_watchdog_reset();
18ad7996
HMH		 4344 }
4345
4346 return rc;
4347}
4348
a5763f22
HMH		 4349static struct ibm_struct fan_driver_data = {
4350 .name = "fan",
4351 .read = fan_read,
4352 .write = fan_write,
4353 .exit = fan_exit,
a5763f22
HMH		 4354};
4355
56b6aeb0
HMH		 4356/****************************************************************************
4357 ****************************************************************************
4358 *
4359 * Infrastructure
4360 *
4361 ****************************************************************************
4362 ****************************************************************************/
4363
4364/* /proc support */
94954cc6 4365static struct proc_dir_entry *proc_dir;
16663a87 4366
56b6aeb0 4367/* Subdriver registry */
a5763f22
HMH		 4368static LIST_HEAD(tpacpi_all_drivers);
4369
1da177e4 4370
56b6aeb0
HMH		 4371/*
4372 * Module and infrastructure proble, init and exit handling
4373 */
1da177e4 4374
fe08bc4b 4375#ifdef CONFIG_THINKPAD_ACPI_DEBUG
a5763f22 4376static const char * __init str_supported(int is_supported)
fe08bc4b 4377{
a5763f22 4378 static char text_unsupported[] __initdata = "not supported";
fe08bc4b 4379
a5763f22 4380 return (is_supported)? &text_unsupported[4] : &text_unsupported[0];
fe08bc4b
HMH		 4381}
4382#endif /* CONFIG_THINKPAD_ACPI_DEBUG */
4383
a5763f22 4384static int __init ibm_init(struct ibm_init_struct *iibm)
1da177e4
LT		 4385{
4386 int ret;
a5763f22 4387 struct ibm_struct *ibm = iibm->data;
1da177e4
LT		 4388 struct proc_dir_entry *entry;
4389
a5763f22
HMH		 4390 BUG_ON(ibm == NULL);
4391
4392 INIT_LIST_HEAD(&ibm->all_drivers);
4393
92641177 4394 if (ibm->flags.experimental && !experimental)
1da177e4
LT		 4395 return 0;
4396
fe08bc4b
HMH		 4397 dbg_printk(TPACPI_DBG_INIT,
4398 "probing for %s\n", ibm->name);
4399
a5763f22
HMH		 4400 if (iibm->init) {
4401 ret = iibm->init(iibm);
5fba344c
HMH		 4402 if (ret > 0)
4403 return 0; /* probe failed */
4404 if (ret)
1da177e4 4405 return ret;
a5763f22 4406
92641177 4407 ibm->flags.init_called = 1;
1da177e4
LT		 4408 }
4409
8d376cd6
HMH		 4410 if (ibm->acpi) {
4411 if (ibm->acpi->hid) {
4412 ret = register_tpacpi_subdriver(ibm);
4413 if (ret)
4414 goto err_out;
4415 }
5fba344c 4416
8d376cd6
HMH		 4417 if (ibm->acpi->notify) {
4418 ret = setup_acpi_notify(ibm);
4419 if (ret == -ENODEV) {
4420 printk(IBM_NOTICE "disabling subdriver %s\n",
4421 ibm->name);
4422 ret = 0;
4423 goto err_out;
4424 }
4425 if (ret < 0)
4426 goto err_out;
5fba344c 4427 }
5fba344c
HMH		 4428 }
4429
fe08bc4b
HMH		 4430 dbg_printk(TPACPI_DBG_INIT,
4431 "%s installed\n", ibm->name);
4432
78f81cc4
BD		 4433 if (ibm->read) {
4434 entry = create_proc_entry(ibm->name,
4435 S_IFREG | S_IRUGO | S_IWUSR,
4436 proc_dir);
4437 if (!entry) {
4438 printk(IBM_ERR "unable to create proc entry %s\n",
4439 ibm->name);
5fba344c
HMH		 4440 ret = -ENODEV;
4441 goto err_out;
78f81cc4
BD		 4442 }
4443 entry->owner = THIS_MODULE;
4444 entry->data = ibm;
8d376cd6 4445 entry->read_proc = &dispatch_procfs_read;
78f81cc4 4446 if (ibm->write)
8d376cd6 4447 entry->write_proc = &dispatch_procfs_write;
92641177 4448 ibm->flags.proc_created = 1;
78f81cc4 4449 }
1da177e4 4450
a5763f22
HMH		 4451 list_add_tail(&ibm->all_drivers, &tpacpi_all_drivers);
4452
1da177e4 4453 return 0;
5fba344c
HMH		 4454
4455err_out:
fe08bc4b
HMH		 4456 dbg_printk(TPACPI_DBG_INIT,
4457 "%s: at error exit path with result %d\n",
4458 ibm->name, ret);
4459
5fba344c
HMH		 4460 ibm_exit(ibm);
4461 return (ret < 0)? ret : 0;
1da177e4
LT		 4462}
4463
4464static void ibm_exit(struct ibm_struct *ibm)
4465{
fe08bc4b 4466 dbg_printk(TPACPI_DBG_EXIT, "removing %s\n", ibm->name);
a5763f22
HMH		 4467
4468 list_del_init(&ibm->all_drivers);
4469
8d376cd6 4470 if (ibm->flags.acpi_notify_installed) {
fe08bc4b
HMH		 4471 dbg_printk(TPACPI_DBG_EXIT,
4472 "%s: acpi_remove_notify_handler\n", ibm->name);
8d376cd6
HMH		 4473 BUG_ON(!ibm->acpi);
4474 acpi_remove_notify_handler(*ibm->acpi->handle,
4475 ibm->acpi->type,
4476 dispatch_acpi_notify);
4477 ibm->flags.acpi_notify_installed = 0;
4478 ibm->flags.acpi_notify_installed = 0;
5fba344c 4479 }
1da177e4 4480
92641177 4481 if (ibm->flags.proc_created) {
fe08bc4b
HMH		 4482 dbg_printk(TPACPI_DBG_EXIT,
4483 "%s: remove_proc_entry\n", ibm->name);
1da177e4 4484 remove_proc_entry(ibm->name, proc_dir);
92641177 4485 ibm->flags.proc_created = 0;
5fba344c 4486 }
1da177e4 4487
8d376cd6 4488 if (ibm->flags.acpi_driver_registered) {
fe08bc4b
HMH		 4489 dbg_printk(TPACPI_DBG_EXIT,
4490 "%s: acpi_bus_unregister_driver\n", ibm->name);
8d376cd6
HMH		 4491 BUG_ON(!ibm->acpi);
4492 acpi_bus_unregister_driver(ibm->acpi->driver);
4493 kfree(ibm->acpi->driver);
4494 ibm->acpi->driver = NULL;
4495 ibm->flags.acpi_driver_registered = 0;
5fba344c
HMH		 4496 }
4497
92641177 4498 if (ibm->flags.init_called && ibm->exit) {
5fba344c 4499 ibm->exit();
92641177 4500 ibm->flags.init_called = 0;
1da177e4 4501 }
a5763f22
HMH		 4502
4503 dbg_printk(TPACPI_DBG_INIT, "finished removing %s\n", ibm->name);
1da177e4
LT		 4504}
4505
56b6aeb0
HMH		 4506/* Probing */
4507
d5a2f2f1 4508static void __init get_thinkpad_model_data(struct thinkpad_id_data *tp)
1da177e4 4509{
56b6aeb0
HMH		 4510 struct dmi_device *dev = NULL;
4511 char ec_fw_string[18];
1da177e4 4512
d5a2f2f1
HMH		 4513 if (!tp)
4514 return;
4515
4516 memset(tp, 0, sizeof(*tp));
4517
4518 if (dmi_name_in_vendors("IBM"))
4519 tp->vendor = PCI_VENDOR_ID_IBM;
4520 else if (dmi_name_in_vendors("LENOVO"))
4521 tp->vendor = PCI_VENDOR_ID_LENOVO;
4522 else
4523 return;
4524
4525 tp->bios_version_str = kstrdup(dmi_get_system_info(DMI_BIOS_VERSION),
4526 GFP_KERNEL);
4527 if (!tp->bios_version_str)
4528 return;
4529 tp->bios_model = tp->bios_version_str[0]
4530 | (tp->bios_version_str[1] << 8);
4531
56b6aeb0
HMH		 4532 /*
4533 * ThinkPad T23 or newer, A31 or newer, R50e or newer,
4534 * X32 or newer, all Z series; Some models must have an
4535 * up-to-date BIOS or they will not be detected.
4536 *
4537 * See http://thinkwiki.org/wiki/List_of_DMI_IDs
4538 */
4539 while ((dev = dmi_find_device(DMI_DEV_TYPE_OEM_STRING, NULL, dev))) {
4540 if (sscanf(dev->name,
4541 "IBM ThinkPad Embedded Controller -[%17c",
4542 ec_fw_string) == 1) {
4543 ec_fw_string[sizeof(ec_fw_string) - 1] = 0;
4544 ec_fw_string[strcspn(ec_fw_string, " ]")] = 0;
d5a2f2f1
HMH		 4545
4546 tp->ec_version_str = kstrdup(ec_fw_string, GFP_KERNEL);
4547 tp->ec_model = ec_fw_string[0]
4548 | (ec_fw_string[1] << 8);
4549 break;
78f81cc4 4550 }
1da177e4 4551 }
d5a2f2f1
HMH		 4552
4553 tp->model_str = kstrdup(dmi_get_system_info(DMI_PRODUCT_VERSION),
4554 GFP_KERNEL);
4555 if (strnicmp(tp->model_str, "ThinkPad", 8) != 0) {
4556 kfree(tp->model_str);
4557 tp->model_str = NULL;
4558 }
1da177e4
LT		 4559}
4560
5fba344c
HMH		 4561static int __init probe_for_thinkpad(void)
4562{
4563 int is_thinkpad;
4564
4565 if (acpi_disabled)
4566 return -ENODEV;
4567
4568 /*
4569 * Non-ancient models have better DMI tagging, but very old models
4570 * don't.
4571 */
d5a2f2f1 4572 is_thinkpad = (thinkpad_id.model_str != NULL);
5fba344c
HMH		 4573
4574 /* ec is required because many other handles are relative to it */
8d376cd6 4575 IBM_ACPIHANDLE_INIT(ec);
5fba344c
HMH		 4576 if (!ec_handle) {
4577 if (is_thinkpad)
4578 printk(IBM_ERR
4579 "Not yet supported ThinkPad detected!\n");
4580 return -ENODEV;
4581 }
4582
0dcef77c
HMH		 4583 /*
4584 * Risks a regression on very old machines, but reduces potential
4585 * false positives a damn great deal
4586 */
4587 if (!is_thinkpad)
d5a2f2f1 4588 is_thinkpad = (thinkpad_id.vendor == PCI_VENDOR_ID_IBM);
0dcef77c
HMH		 4589
4590 if (!is_thinkpad && !force_load)
4591 return -ENODEV;
4592
5fba344c
HMH		 4593 return 0;
4594}
4595
4596
56b6aeb0 4597/* Module init, exit, parameters */
1da177e4 4598
a5763f22
HMH		 4599static struct ibm_init_struct ibms_init[] __initdata = {
4600 {
4601 .init = thinkpad_acpi_driver_init,
4602 .data = &thinkpad_acpi_driver_data,
4603 },
4604 {
4605 .init = hotkey_init,
4606 .data = &hotkey_driver_data,
4607 },
4608 {
4609 .init = bluetooth_init,
4610 .data = &bluetooth_driver_data,
4611 },
4612 {
4613 .init = wan_init,
4614 .data = &wan_driver_data,
4615 },
4616 {
4617 .init = video_init,
4618 .data = &video_driver_data,
4619 },
4620 {
4621 .init = light_init,
4622 .data = &light_driver_data,
4623 },
4624#ifdef CONFIG_THINKPAD_ACPI_DOCK
4625 {
4626 .init = dock_init,
4627 .data = &dock_driver_data[0],
4628 },
4629 {
d94a7f16 4630 .init = dock_init2,
a5763f22
HMH		 4631 .data = &dock_driver_data[1],
4632 },
4633#endif
4634#ifdef CONFIG_THINKPAD_ACPI_BAY
4635 {
4636 .init = bay_init,
4637 .data = &bay_driver_data,
4638 },
4639#endif
4640 {
4641 .init = cmos_init,
4642 .data = &cmos_driver_data,
4643 },
4644 {
4645 .init = led_init,
4646 .data = &led_driver_data,
4647 },
4648 {
4649 .init = beep_init,
4650 .data = &beep_driver_data,
4651 },
4652 {
4653 .init = thermal_init,
4654 .data = &thermal_driver_data,
4655 },
4656 {
4657 .data = &ecdump_driver_data,
4658 },
4659 {
4660 .init = brightness_init,
4661 .data = &brightness_driver_data,
4662 },
4663 {
4664 .data = &volume_driver_data,
4665 },
4666 {
4667 .init = fan_init,
4668 .data = &fan_driver_data,
4669 },
4670};
4671
3945ac36 4672static int __init set_ibm_param(const char *val, struct kernel_param *kp)
1da177e4
LT		 4673{
4674 unsigned int i;
a5763f22 4675 struct ibm_struct *ibm;
1da177e4 4676
a5763f22
HMH		 4677 for (i = 0; i < ARRAY_SIZE(ibms_init); i++) {
4678 ibm = ibms_init[i].data;
4679 BUG_ON(ibm == NULL);
4680
4681 if (strcmp(ibm->name, kp->name) == 0 && ibm->write) {
4682 if (strlen(val) > sizeof(ibms_init[i].param) - 2)
78f81cc4 4683 return -ENOSPC;
a5763f22
HMH		 4684 strcpy(ibms_init[i].param, val);
4685 strcat(ibms_init[i].param, ",");
78f81cc4
BD		 4686 return 0;
4687 }
a5763f22 4688 }
1da177e4 4689
1da177e4
LT		 4690 return -EINVAL;
4691}
4692
56b6aeb0
HMH		 4693static int experimental;
4694module_param(experimental, int, 0);
4695
132ce091
HMH		 4696static u32 dbg_level;
4697module_param_named(debug, dbg_level, uint, 0);
4698
0dcef77c 4699static int force_load;
86cc9445 4700module_param(force_load, bool, 0);
0dcef77c 4701
ecf2a80a 4702static int fan_control_allowed;
86cc9445 4703module_param_named(fan_control, fan_control_allowed, bool, 0);
ecf2a80a 4704
24d3b774
HMH		 4705static int brightness_mode;
4706module_param_named(brightness_mode, brightness_mode, int, 0);
4707
ff80f137
HMH		 4708static unsigned int hotkey_report_mode;
4709module_param(hotkey_report_mode, uint, 0);
4710
1da177e4
LT		 4711#define IBM_PARAM(feature) \
4712 module_param_call(feature, set_ibm_param, NULL, NULL, 0)
4713
78f81cc4
BD		 4714IBM_PARAM(hotkey);
4715IBM_PARAM(bluetooth);
4716IBM_PARAM(video);
4717IBM_PARAM(light);
85998248 4718#ifdef CONFIG_THINKPAD_ACPI_DOCK
78f81cc4 4719IBM_PARAM(dock);
63e5f248 4720#endif
85998248 4721#ifdef CONFIG_THINKPAD_ACPI_BAY
78f81cc4 4722IBM_PARAM(bay);
85998248 4723#endif /* CONFIG_THINKPAD_ACPI_BAY */
78f81cc4
BD		 4724IBM_PARAM(cmos);
4725IBM_PARAM(led);
4726IBM_PARAM(beep);
4727IBM_PARAM(ecdump);
4728IBM_PARAM(brightness);
4729IBM_PARAM(volume);
4730IBM_PARAM(fan);
4731
1def7115 4732static int __init thinkpad_acpi_module_init(void)
1da177e4
LT		 4733{
4734 int ret, i;
4735
8fef502e
HMH		 4736 tpacpi_lifecycle = TPACPI_LIFE_INIT;
4737
ff80f137
HMH		 4738 /* Parameter checking */
4739 if (hotkey_report_mode > 2)
4740 return -EINVAL;
4741
54ae1501 4742 /* Driver-level probe */
d5a2f2f1
HMH		 4743
4744 get_thinkpad_model_data(&thinkpad_id);
5fba344c 4745 ret = probe_for_thinkpad();
d5a2f2f1
HMH		 4746 if (ret) {
4747 thinkpad_acpi_module_exit();
5fba344c 4748 return ret;
d5a2f2f1 4749 }
1da177e4 4750
54ae1501 4751 /* Driver initialization */
d5a2f2f1 4752
8d376cd6
HMH		 4753 IBM_ACPIHANDLE_INIT(ecrd);
4754 IBM_ACPIHANDLE_INIT(ecwr);
1da177e4 4755
8d376cd6 4756 proc_dir = proc_mkdir(IBM_PROC_DIR, acpi_root_dir);
1da177e4 4757 if (!proc_dir) {
8d376cd6 4758 printk(IBM_ERR "unable to create proc dir " IBM_PROC_DIR);
1def7115 4759 thinkpad_acpi_module_exit();
1da177e4
LT		 4760 return -ENODEV;
4761 }
4762 proc_dir->owner = THIS_MODULE;
78f81cc4 4763
54ae1501
HMH		 4764 ret = platform_driver_register(&tpacpi_pdriver);
4765 if (ret) {
4766 printk(IBM_ERR "unable to register platform driver\n");
4767 thinkpad_acpi_module_exit();
4768 return ret;
4769 }
ac36393d
HMH		 4770 tp_features.platform_drv_registered = 1;
4771
176750d6
HMH		 4772 ret = tpacpi_create_driver_attributes(&tpacpi_pdriver.driver);
4773 if (ret) {
4774 printk(IBM_ERR "unable to create sysfs driver attributes\n");
4775 thinkpad_acpi_module_exit();
4776 return ret;
4777 }
ac36393d 4778 tp_features.platform_drv_attrs_registered = 1;
176750d6 4779
54ae1501
HMH		 4780
4781 /* Device initialization */
4782 tpacpi_pdev = platform_device_register_simple(IBM_DRVR_NAME, -1,
4783 NULL, 0);
4784 if (IS_ERR(tpacpi_pdev)) {
4785 ret = PTR_ERR(tpacpi_pdev);
4786 tpacpi_pdev = NULL;
4787 printk(IBM_ERR "unable to register platform device\n");
4788 thinkpad_acpi_module_exit();
4789 return ret;
4790 }
4791 tpacpi_hwmon = hwmon_device_register(&tpacpi_pdev->dev);
4792 if (IS_ERR(tpacpi_hwmon)) {
4793 ret = PTR_ERR(tpacpi_hwmon);
4794 tpacpi_hwmon = NULL;
4795 printk(IBM_ERR "unable to register hwmon device\n");
4796 thinkpad_acpi_module_exit();
4797 return ret;
4798 }
8523ed6f 4799 mutex_init(&tpacpi_inputdev_send_mutex);
7f5d1cd6
HMH		 4800 tpacpi_inputdev = input_allocate_device();
4801 if (!tpacpi_inputdev) {
4802 printk(IBM_ERR "unable to allocate input device\n");
4803 thinkpad_acpi_module_exit();
4804 return -ENOMEM;
4805 } else {
4806 /* Prepare input device, but don't register */
4807 tpacpi_inputdev->name = "ThinkPad Extra Buttons";
4808 tpacpi_inputdev->phys = IBM_DRVR_NAME "/input0";
4809 tpacpi_inputdev->id.bustype = BUS_HOST;
edf0e0e5
HMH		 4810 tpacpi_inputdev->id.vendor = (thinkpad_id.vendor) ?
4811 thinkpad_id.vendor :
4812 PCI_VENDOR_ID_IBM;
7f5d1cd6
HMH		 4813 tpacpi_inputdev->id.product = TPACPI_HKEY_INPUT_PRODUCT;
4814 tpacpi_inputdev->id.version = TPACPI_HKEY_INPUT_VERSION;
4815 }
a5763f22
HMH		 4816 for (i = 0; i < ARRAY_SIZE(ibms_init); i++) {
4817 ret = ibm_init(&ibms_init[i]);
4818 if (ret >= 0 && *ibms_init[i].param)
4819 ret = ibms_init[i].data->write(ibms_init[i].param);
1da177e4 4820 if (ret < 0) {
1def7115 4821 thinkpad_acpi_module_exit();
1da177e4
LT		 4822 return ret;
4823 }
4824 }
7f5d1cd6
HMH		 4825 ret = input_register_device(tpacpi_inputdev);
4826 if (ret < 0) {
4827 printk(IBM_ERR "unable to register input device\n");
4828 thinkpad_acpi_module_exit();
4829 return ret;
4830 } else {
4831 tp_features.input_device_registered = 1;
4832 }
1da177e4 4833
8fef502e 4834 tpacpi_lifecycle = TPACPI_LIFE_RUNNING;
1da177e4
LT		 4835 return 0;
4836}
4837
1def7115 4838static void thinkpad_acpi_module_exit(void)
56b6aeb0 4839{
a5763f22
HMH		 4840 struct ibm_struct *ibm, *itmp;
4841
8fef502e
HMH		 4842 tpacpi_lifecycle = TPACPI_LIFE_EXITING;
4843
a5763f22
HMH		 4844 list_for_each_entry_safe_reverse(ibm, itmp,
4845 &tpacpi_all_drivers,
4846 all_drivers) {
4847 ibm_exit(ibm);
4848 }
56b6aeb0 4849
a5763f22 4850 dbg_printk(TPACPI_DBG_INIT, "finished subdriver exit path...\n");
56b6aeb0 4851
7f5d1cd6
HMH		 4852 if (tpacpi_inputdev) {
4853 if (tp_features.input_device_registered)
4854 input_unregister_device(tpacpi_inputdev);
4855 else
4856 input_free_device(tpacpi_inputdev);
4857 }
4858
54ae1501
HMH		 4859 if (tpacpi_hwmon)
4860 hwmon_device_unregister(tpacpi_hwmon);
4861
4862 if (tpacpi_pdev)
4863 platform_device_unregister(tpacpi_pdev);
4864
ac36393d
HMH		 4865 if (tp_features.platform_drv_attrs_registered)
4866 tpacpi_remove_driver_attributes(&tpacpi_pdriver.driver);
4867
4868 if (tp_features.platform_drv_registered)
4869 platform_driver_unregister(&tpacpi_pdriver);
54ae1501 4870
56b6aeb0 4871 if (proc_dir)
8d376cd6 4872 remove_proc_entry(IBM_PROC_DIR, acpi_root_dir);
56b6aeb0 4873
d5a2f2f1
HMH		 4874 kfree(thinkpad_id.bios_version_str);
4875 kfree(thinkpad_id.ec_version_str);
4876 kfree(thinkpad_id.model_str);
56b6aeb0
HMH		 4877}
4878
1def7115
HMH		 4879module_init(thinkpad_acpi_module_init);
4880module_exit(thinkpad_acpi_module_exit);
Linux kernel - Deliverables
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