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ACPI: thinkpad-acpi: issue EV_SYNC after EV_SWITCH
[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
56b6aeb0
HMH		 120/****************************************************************************
121 ****************************************************************************
122 *
123 * ACPI Helpers and device model
124 *
125 ****************************************************************************
126 ****************************************************************************/
127
128/*************************************************************************
129 * ACPI basic handles
130 */
1da177e4 131
94954cc6 132static acpi_handle root_handle;
1da177e4
LT		 133
134#define IBM_HANDLE(object, parent, paths...) \
135 static acpi_handle object##_handle; \
136 static acpi_handle *object##_parent = &parent##_handle; \
78f81cc4 137 static char *object##_path; \
1da177e4
LT		 138 static char *object##_paths[] = { paths }
139
78f81cc4
BD		 140IBM_HANDLE(ec, root, "\\_SB.PCI0.ISA.EC0", /* 240, 240x */
141 "\\_SB.PCI.ISA.EC", /* 570 */
142 "\\_SB.PCI0.ISA0.EC0", /* 600e/x, 770e, 770x */
143 "\\_SB.PCI0.ISA.EC", /* A21e, A2xm/p, T20-22, X20-21 */
144 "\\_SB.PCI0.AD4S.EC0", /* i1400, R30 */
145 "\\_SB.PCI0.ICH3.EC0", /* R31 */
146 "\\_SB.PCI0.LPC.EC", /* all others */
56b6aeb0 147 );
78f81cc4 148
56b6aeb0
HMH		 149IBM_HANDLE(ecrd, ec, "ECRD"); /* 570 */
150IBM_HANDLE(ecwr, ec, "ECWR"); /* 570 */
78f81cc4 151
56b6aeb0
HMH		 152
153/*************************************************************************
154 * Misc ACPI handles
155 */
78f81cc4
BD		 156
157IBM_HANDLE(cmos, root, "\\UCMS", /* R50, R50e, R50p, R51, T4x, X31, X40 */
158 "\\CMOS", /* A3x, G4x, R32, T23, T30, X22-24, X30 */
159 "\\CMS", /* R40, R40e */
56b6aeb0 160 ); /* all others */
78f81cc4
BD		 161
162IBM_HANDLE(hkey, ec, "\\_SB.HKEY", /* 600e/x, 770e, 770x */
163 "^HKEY", /* R30, R31 */
164 "HKEY", /* all others */
56b6aeb0 165 ); /* 570 */
78f81cc4 166
78f81cc4 167
56b6aeb0
HMH		 168/*************************************************************************
169 * ACPI helpers
a8b7a662
HMH		 170 */
171
1da177e4
LT		 172static int acpi_evalf(acpi_handle handle,
173 void *res, char *method, char *fmt, ...)
174{
175 char *fmt0 = fmt;
78f81cc4
BD		 176 struct acpi_object_list params;
177 union acpi_object in_objs[IBM_MAX_ACPI_ARGS];
178 struct acpi_buffer result, *resultp;
179 union acpi_object out_obj;
180 acpi_status status;
181 va_list ap;
182 char res_type;
183 int success;
184 int quiet;
1da177e4
LT		 185
186 if (!*fmt) {
187 printk(IBM_ERR "acpi_evalf() called with empty format\n");
188 return 0;
189 }
190
191 if (*fmt == 'q') {
192 quiet = 1;
193 fmt++;
194 } else
195 quiet = 0;
196
197 res_type = *(fmt++);
198
199 params.count = 0;
200 params.pointer = &in_objs[0];
201
202 va_start(ap, fmt);
203 while (*fmt) {
204 char c = *(fmt++);
205 switch (c) {
206 case 'd': /* int */
207 in_objs[params.count].integer.value = va_arg(ap, int);
208 in_objs[params.count++].type = ACPI_TYPE_INTEGER;
209 break;
78f81cc4 210 /* add more types as needed */
1da177e4
LT		 211 default:
212 printk(IBM_ERR "acpi_evalf() called "
213 "with invalid format character '%c'\n", c);
214 return 0;
215 }
216 }
217 va_end(ap);
218
78f81cc4
BD		 219 if (res_type != 'v') {
220 result.length = sizeof(out_obj);
221 result.pointer = &out_obj;
222 resultp = &result;
223 } else
224 resultp = NULL;
1da177e4 225
78f81cc4 226 status = acpi_evaluate_object(handle, method, &params, resultp);
1da177e4
LT		 227
228 switch (res_type) {
78f81cc4 229 case 'd': /* int */
1da177e4
LT		 230 if (res)
231 *(int *)res = out_obj.integer.value;
232 success = status == AE_OK && out_obj.type == ACPI_TYPE_INTEGER;
233 break;
78f81cc4 234 case 'v': /* void */
1da177e4
LT		 235 success = status == AE_OK;
236 break;
78f81cc4 237 /* add more types as needed */
1da177e4
LT		 238 default:
239 printk(IBM_ERR "acpi_evalf() called "
240 "with invalid format character '%c'\n", res_type);
241 return 0;
242 }
243
56b6aeb0
HMH		 244 if (!success && !quiet)
245 printk(IBM_ERR "acpi_evalf(%s, %s, ...) failed: %d\n",
246 method, fmt0, status);
247
248 return success;
249}
250
251static void __unused acpi_print_int(acpi_handle handle, char *method)
252{
253 int i;
254
255 if (acpi_evalf(handle, &i, method, "d"))
256 printk(IBM_INFO "%s = 0x%x\n", method, i);
257 else
258 printk(IBM_ERR "error calling %s\n", method);
259}
260
261static int acpi_ec_read(int i, u8 * p)
262{
263 int v;
264
265 if (ecrd_handle) {
266 if (!acpi_evalf(ecrd_handle, &v, NULL, "dd", i))
267 return 0;
268 *p = v;
269 } else {
270 if (ec_read(i, p) < 0)
271 return 0;
272 }
273
274 return 1;
275}
276
277static int acpi_ec_write(int i, u8 v)
278{
279 if (ecwr_handle) {
280 if (!acpi_evalf(ecwr_handle, NULL, NULL, "vdd", i, v))
281 return 0;
282 } else {
283 if (ec_write(i, v) < 0)
284 return 0;
285 }
286
287 return 1;
288}
289
290static int _sta(acpi_handle handle)
291{
292 int status;
293
294 if (!handle || !acpi_evalf(handle, &status, "_STA", "d"))
295 status = 0;
296
297 return status;
298}
299
c9bea99c
HMH		 300static int issue_thinkpad_cmos_command(int cmos_cmd)
301{
302 if (!cmos_handle)
303 return -ENXIO;
304
305 if (!acpi_evalf(cmos_handle, NULL, NULL, "vd", cmos_cmd))
306 return -EIO;
307
308 return 0;
309}
310
56b6aeb0
HMH		 311/*************************************************************************
312 * ACPI device model
313 */
314
8d376cd6 315static void drv_acpi_handle_init(char *name,
5fba344c
HMH		 316 acpi_handle *handle, acpi_handle parent,
317 char **paths, int num_paths, char **path)
56b6aeb0
HMH		 318{
319 int i;
320 acpi_status status;
321
5ae930e6
HMH		 322 vdbg_printk(TPACPI_DBG_INIT, "trying to locate ACPI handle for %s\n",
323 name);
324
56b6aeb0
HMH		 325 for (i = 0; i < num_paths; i++) {
326 status = acpi_get_handle(parent, paths[i], handle);
327 if (ACPI_SUCCESS(status)) {
328 *path = paths[i];
5ae930e6
HMH		 329 dbg_printk(TPACPI_DBG_INIT,
330 "Found ACPI handle %s for %s\n",
331 *path, name);
56b6aeb0
HMH		 332 return;
333 }
334 }
335
5ae930e6
HMH		 336 vdbg_printk(TPACPI_DBG_INIT, "ACPI handle for %s not found\n",
337 name);
56b6aeb0
HMH		 338 *handle = NULL;
339}
340
8d376cd6 341static void dispatch_acpi_notify(acpi_handle handle, u32 event, void *data)
56b6aeb0
HMH		 342{
343 struct ibm_struct *ibm = data;
344
8d376cd6 345 if (!ibm || !ibm->acpi || !ibm->acpi->notify)
56b6aeb0
HMH		 346 return;
347
8d376cd6 348 ibm->acpi->notify(ibm, event);
56b6aeb0
HMH		 349}
350
8d376cd6 351static int __init setup_acpi_notify(struct ibm_struct *ibm)
56b6aeb0
HMH		 352{
353 acpi_status status;
5ae930e6 354 int rc;
56b6aeb0 355
8d376cd6
HMH		 356 BUG_ON(!ibm->acpi);
357
358 if (!*ibm->acpi->handle)
56b6aeb0
HMH		 359 return 0;
360
5ae930e6 361 vdbg_printk(TPACPI_DBG_INIT,
fe08bc4b
HMH		 362 "setting up ACPI notify for %s\n", ibm->name);
363
5ae930e6
HMH		 364 rc = acpi_bus_get_device(*ibm->acpi->handle, &ibm->acpi->device);
365 if (rc < 0) {
366 printk(IBM_ERR "acpi_bus_get_device(%s) failed: %d\n",
367 ibm->name, rc);
56b6aeb0
HMH		 368 return -ENODEV;
369 }
370
8d376cd6
HMH		 371 acpi_driver_data(ibm->acpi->device) = ibm;
372 sprintf(acpi_device_class(ibm->acpi->device), "%s/%s",
643f12db
HMH		 373 IBM_ACPI_EVENT_PREFIX,
374 ibm->name);
56b6aeb0 375
8d376cd6
HMH		 376 status = acpi_install_notify_handler(*ibm->acpi->handle,
377 ibm->acpi->type, dispatch_acpi_notify, ibm);
56b6aeb0
HMH		 378 if (ACPI_FAILURE(status)) {
379 if (status == AE_ALREADY_EXISTS) {
380 printk(IBM_NOTICE "another device driver is already handling %s events\n",
381 ibm->name);
382 } else {
383 printk(IBM_ERR "acpi_install_notify_handler(%s) failed: %d\n",
384 ibm->name, status);
385 }
386 return -ENODEV;
387 }
8d376cd6 388 ibm->flags.acpi_notify_installed = 1;
56b6aeb0
HMH		 389 return 0;
390}
391
8d376cd6 392static int __init tpacpi_device_add(struct acpi_device *device)
56b6aeb0
HMH		 393{
394 return 0;
395}
396
6700121b 397static int __init register_tpacpi_subdriver(struct ibm_struct *ibm)
56b6aeb0 398{
5ae930e6 399 int rc;
56b6aeb0 400
fe08bc4b
HMH		 401 dbg_printk(TPACPI_DBG_INIT,
402 "registering %s as an ACPI driver\n", ibm->name);
403
8d376cd6
HMH		 404 BUG_ON(!ibm->acpi);
405
406 ibm->acpi->driver = kzalloc(sizeof(struct acpi_driver), GFP_KERNEL);
407 if (!ibm->acpi->driver) {
5fba344c
HMH		 408 printk(IBM_ERR "kzalloc(ibm->driver) failed\n");
409 return -ENOMEM;
56b6aeb0
HMH		 410 }
411
8d376cd6
HMH		 412 sprintf(ibm->acpi->driver->name, "%s_%s", IBM_NAME, ibm->name);
413 ibm->acpi->driver->ids = ibm->acpi->hid;
1ba90e3a 414
8d376cd6 415 ibm->acpi->driver->ops.add = &tpacpi_device_add;
56b6aeb0 416
5ae930e6
HMH		 417 rc = acpi_bus_register_driver(ibm->acpi->driver);
418 if (rc < 0) {
56b6aeb0 419 printk(IBM_ERR "acpi_bus_register_driver(%s) failed: %d\n",
1ba90e3a 420 ibm->name, rc);
8d376cd6
HMH		 421 kfree(ibm->acpi->driver);
422 ibm->acpi->driver = NULL;
5ae930e6 423 } else if (!rc)
8d376cd6 424 ibm->flags.acpi_driver_registered = 1;
56b6aeb0 425
5ae930e6 426 return rc;
56b6aeb0
HMH		 427}
428
429
430/****************************************************************************
431 ****************************************************************************
432 *
433 * Procfs Helpers
434 *
435 ****************************************************************************
436 ****************************************************************************/
437
8d376cd6
HMH		 438static int dispatch_procfs_read(char *page, char **start, off_t off,
439 int count, int *eof, void *data)
56b6aeb0
HMH		 440{
441 struct ibm_struct *ibm = data;
442 int len;
443
444 if (!ibm || !ibm->read)
445 return -EINVAL;
446
447 len = ibm->read(page);
448 if (len < 0)
449 return len;
450
451 if (len <= off + count)
452 *eof = 1;
453 *start = page + off;
454 len -= off;
455 if (len > count)
456 len = count;
457 if (len < 0)
458 len = 0;
459
460 return len;
461}
462
8d376cd6
HMH		 463static int dispatch_procfs_write(struct file *file,
464 const char __user * userbuf,
465 unsigned long count, void *data)
56b6aeb0
HMH		 466{
467 struct ibm_struct *ibm = data;
468 char *kernbuf;
469 int ret;
470
471 if (!ibm || !ibm->write)
472 return -EINVAL;
473
474 kernbuf = kmalloc(count + 2, GFP_KERNEL);
475 if (!kernbuf)
476 return -ENOMEM;
1da177e4 477
56b6aeb0
HMH		 478 if (copy_from_user(kernbuf, userbuf, count)) {
479 kfree(kernbuf);
480 return -EFAULT;
481 }
1da177e4 482
56b6aeb0
HMH		 483 kernbuf[count] = 0;
484 strcat(kernbuf, ",");
485 ret = ibm->write(kernbuf);
486 if (ret == 0)
487 ret = count;
1da177e4 488
56b6aeb0
HMH		 489 kfree(kernbuf);
490
491 return ret;
1da177e4
LT		 492}
493
494static char *next_cmd(char **cmds)
495{
496 char *start = *cmds;
497 char *end;
498
499 while ((end = strchr(start, ',')) && end == start)
500 start = end + 1;
501
502 if (!end)
503 return NULL;
504
505 *end = 0;
506 *cmds = end + 1;
507 return start;
508}
509
56b6aeb0 510
54ae1501
HMH		 511/****************************************************************************
512 ****************************************************************************
513 *
7f5d1cd6 514 * Device model: input, hwmon and platform
54ae1501
HMH		 515 *
516 ****************************************************************************
517 ****************************************************************************/
518
94954cc6
HMH		 519static struct platform_device *tpacpi_pdev;
520static struct class_device *tpacpi_hwmon;
7f5d1cd6 521static struct input_dev *tpacpi_inputdev;
54ae1501 522
e295e850
HMH		 523
524static int tpacpi_resume_handler(struct platform_device *pdev)
525{
526 struct ibm_struct *ibm, *itmp;
527
528 list_for_each_entry_safe(ibm, itmp,
529 &tpacpi_all_drivers,
530 all_drivers) {
531 if (ibm->resume)
532 (ibm->resume)();
533 }
534
535 return 0;
536}
537
54ae1501
HMH		 538static struct platform_driver tpacpi_pdriver = {
539 .driver = {
540 .name = IBM_DRVR_NAME,
541 .owner = THIS_MODULE,
542 },
e295e850 543 .resume = tpacpi_resume_handler,
54ae1501
HMH		 544};
545
546
176750d6
HMH		 547/*************************************************************************
548 * thinkpad-acpi driver attributes
549 */
550
551/* interface_version --------------------------------------------------- */
552static ssize_t tpacpi_driver_interface_version_show(
553 struct device_driver *drv,
554 char *buf)
555{
556 return snprintf(buf, PAGE_SIZE, "0x%08x\n", TPACPI_SYSFS_VERSION);
557}
558
559static DRIVER_ATTR(interface_version, S_IRUGO,
560 tpacpi_driver_interface_version_show, NULL);
561
562/* debug_level --------------------------------------------------------- */
563static ssize_t tpacpi_driver_debug_show(struct device_driver *drv,
564 char *buf)
565{
566 return snprintf(buf, PAGE_SIZE, "0x%04x\n", dbg_level);
567}
568
569static ssize_t tpacpi_driver_debug_store(struct device_driver *drv,
570 const char *buf, size_t count)
571{
572 unsigned long t;
176750d6 573
7252374a 574 if (parse_strtoul(buf, 0xffff, &t))
176750d6
HMH		 575 return -EINVAL;
576
577 dbg_level = t;
578
579 return count;
580}
581
582static DRIVER_ATTR(debug_level, S_IWUSR | S_IRUGO,
583 tpacpi_driver_debug_show, tpacpi_driver_debug_store);
584
585/* version ------------------------------------------------------------- */
586static ssize_t tpacpi_driver_version_show(struct device_driver *drv,
587 char *buf)
588{
589 return snprintf(buf, PAGE_SIZE, "%s v%s\n", IBM_DESC, IBM_VERSION);
590}
591
592static DRIVER_ATTR(version, S_IRUGO,
593 tpacpi_driver_version_show, NULL);
594
595/* --------------------------------------------------------------------- */
596
597static struct driver_attribute* tpacpi_driver_attributes[] = {
598 &driver_attr_debug_level, &driver_attr_version,
599 &driver_attr_interface_version,
600};
601
602static int __init tpacpi_create_driver_attributes(struct device_driver *drv)
603{
604 int i, res;
605
606 i = 0;
607 res = 0;
608 while (!res && i < ARRAY_SIZE(tpacpi_driver_attributes)) {
609 res = driver_create_file(drv, tpacpi_driver_attributes[i]);
610 i++;
611 }
612
613 return res;
614}
615
616static void tpacpi_remove_driver_attributes(struct device_driver *drv)
617{
618 int i;
619
620 for(i = 0; i < ARRAY_SIZE(tpacpi_driver_attributes); i++)
621 driver_remove_file(drv, tpacpi_driver_attributes[i]);
622}
623
7252374a
HMH		 624/*************************************************************************
625 * sysfs support helpers
626 */
627
628struct attribute_set_obj {
629 struct attribute_set s;
630 struct attribute *a;
631} __attribute__((packed));
632
633static struct attribute_set *create_attr_set(unsigned int max_members,
634 const char* name)
635{
636 struct attribute_set_obj *sobj;
637
638 if (max_members == 0)
639 return NULL;
640
641 /* Allocates space for implicit NULL at the end too */
642 sobj = kzalloc(sizeof(struct attribute_set_obj) +
643 max_members * sizeof(struct attribute *),
644 GFP_KERNEL);
645 if (!sobj)
646 return NULL;
647 sobj->s.max_members = max_members;
648 sobj->s.group.attrs = &sobj->a;
649 sobj->s.group.name = name;
650
651 return &sobj->s;
652}
653
654/* not multi-threaded safe, use it in a single thread per set */
655static int add_to_attr_set(struct attribute_set* s, struct attribute *attr)
656{
657 if (!s || !attr)
658 return -EINVAL;
659
660 if (s->members >= s->max_members)
661 return -ENOMEM;
662
663 s->group.attrs[s->members] = attr;
664 s->members++;
665
666 return 0;
667}
668
669static int add_many_to_attr_set(struct attribute_set* s,
670 struct attribute **attr,
671 unsigned int count)
672{
673 int i, res;
674
675 for (i = 0; i < count; i++) {
676 res = add_to_attr_set(s, attr[i]);
677 if (res)
678 return res;
679 }
680
681 return 0;
682}
683
684static void delete_attr_set(struct attribute_set* s, struct kobject *kobj)
685{
686 sysfs_remove_group(kobj, &s->group);
687 destroy_attr_set(s);
688}
689
690static int parse_strtoul(const char *buf,
691 unsigned long max, unsigned long *value)
692{
693 char *endp;
694
695 *value = simple_strtoul(buf, &endp, 0);
696 while (*endp && isspace(*endp))
697 endp++;
698 if (*endp || *value > max)
699 return -EINVAL;
700
701 return 0;
702}
703
56b6aeb0
HMH		 704/****************************************************************************
705 ****************************************************************************
706 *
707 * Subdrivers
708 *
709 ****************************************************************************
710 ****************************************************************************/
711
712/*************************************************************************
142cfc90 713 * thinkpad-acpi init subdriver
56b6aeb0
HMH		 714 */
715
a5763f22 716static int __init thinkpad_acpi_driver_init(struct ibm_init_struct *iibm)
1da177e4
LT		 717{
718 printk(IBM_INFO "%s v%s\n", IBM_DESC, IBM_VERSION);
719 printk(IBM_INFO "%s\n", IBM_URL);
720
d5a2f2f1
HMH		 721 printk(IBM_INFO "ThinkPad BIOS %s, EC %s\n",
722 (thinkpad_id.bios_version_str) ?
723 thinkpad_id.bios_version_str : "unknown",
724 (thinkpad_id.ec_version_str) ?
725 thinkpad_id.ec_version_str : "unknown");
726
727 if (thinkpad_id.vendor && thinkpad_id.model_str)
728 printk(IBM_INFO "%s %s\n",
729 (thinkpad_id.vendor == PCI_VENDOR_ID_IBM) ?
730 "IBM" : ((thinkpad_id.vendor ==
731 PCI_VENDOR_ID_LENOVO) ?
732 "Lenovo" : "Unknown vendor"),
733 thinkpad_id.model_str);
3945ac36 734
1da177e4
LT		 735 return 0;
736}
737
643f12db 738static int thinkpad_acpi_driver_read(char *p)
1da177e4
LT		 739{
740 int len = 0;
741
742 len += sprintf(p + len, "driver:\t\t%s\n", IBM_DESC);
743 len += sprintf(p + len, "version:\t%s\n", IBM_VERSION);
744
745 return len;
746}
747
a5763f22
HMH		 748static struct ibm_struct thinkpad_acpi_driver_data = {
749 .name = "driver",
750 .read = thinkpad_acpi_driver_read,
751};
752
56b6aeb0
HMH		 753/*************************************************************************
754 * Hotkey subdriver
755 */
756
78f81cc4 757static int hotkey_orig_status;
ae92bd17 758static u32 hotkey_orig_mask;
9b010de5 759static u32 hotkey_all_mask;
6a38abbf
HMH		 760static u32 hotkey_reserved_mask;
761
edf0e0e5 762static u16 *hotkey_keycode_map;
78f81cc4 763
94954cc6 764static struct attribute_set *hotkey_dev_attributes;
a0416420 765
74941a69
HMH		 766static int hotkey_get_wlsw(int *status)
767{
768 if (!acpi_evalf(hkey_handle, status, "WLSW", "d"))
769 return -EIO;
770 return 0;
771}
772
a0416420
HMH		 773/* sysfs hotkey enable ------------------------------------------------- */
774static ssize_t hotkey_enable_show(struct device *dev,
775 struct device_attribute *attr,
776 char *buf)
777{
ae92bd17
HMH		 778 int res, status;
779 u32 mask;
a0416420
HMH		 780
781 res = hotkey_get(&status, &mask);
782 if (res)
783 return res;
784
785 return snprintf(buf, PAGE_SIZE, "%d\n", status);
786}
787
788static ssize_t hotkey_enable_store(struct device *dev,
789 struct device_attribute *attr,
790 const char *buf, size_t count)
791{
792 unsigned long t;
ae92bd17
HMH		 793 int res, status;
794 u32 mask;
a0416420
HMH		 795
796 if (parse_strtoul(buf, 1, &t))
797 return -EINVAL;
798
799 res = hotkey_get(&status, &mask);
800 if (!res)
801 res = hotkey_set(t, mask);
802
803 return (res) ? res : count;
804}
805
806static struct device_attribute dev_attr_hotkey_enable =
cc4c24e1 807 __ATTR(hotkey_enable, S_IWUSR | S_IRUGO,
a0416420
HMH		 808 hotkey_enable_show, hotkey_enable_store);
809
810/* sysfs hotkey mask --------------------------------------------------- */
811static ssize_t hotkey_mask_show(struct device *dev,
812 struct device_attribute *attr,
813 char *buf)
814{
ae92bd17
HMH		 815 int res, status;
816 u32 mask;
a0416420
HMH		 817
818 res = hotkey_get(&status, &mask);
819 if (res)
820 return res;
821
ae92bd17 822 return snprintf(buf, PAGE_SIZE, "0x%08x\n", mask);
a0416420
HMH		 823}
824
825static ssize_t hotkey_mask_store(struct device *dev,
826 struct device_attribute *attr,
827 const char *buf, size_t count)
828{
829 unsigned long t;
ae92bd17
HMH		 830 int res, status;
831 u32 mask;
a0416420 832
ae92bd17 833 if (parse_strtoul(buf, 0xffffffffUL, &t))
a0416420
HMH		 834 return -EINVAL;
835
836 res = hotkey_get(&status, &mask);
837 if (!res)
838 hotkey_set(status, t);
839
840 return (res) ? res : count;
841}
842
843static struct device_attribute dev_attr_hotkey_mask =
cc4c24e1 844 __ATTR(hotkey_mask, S_IWUSR | S_IRUGO,
a0416420
HMH		 845 hotkey_mask_show, hotkey_mask_store);
846
847/* sysfs hotkey bios_enabled ------------------------------------------- */
848static ssize_t hotkey_bios_enabled_show(struct device *dev,
849 struct device_attribute *attr,
850 char *buf)
851{
852 return snprintf(buf, PAGE_SIZE, "%d\n", hotkey_orig_status);
853}
854
855static struct device_attribute dev_attr_hotkey_bios_enabled =
cc4c24e1 856 __ATTR(hotkey_bios_enabled, S_IRUGO, hotkey_bios_enabled_show, NULL);
a0416420
HMH		 857
858/* sysfs hotkey bios_mask ---------------------------------------------- */
859static ssize_t hotkey_bios_mask_show(struct device *dev,
860 struct device_attribute *attr,
861 char *buf)
862{
ae92bd17 863 return snprintf(buf, PAGE_SIZE, "0x%08x\n", hotkey_orig_mask);
a0416420
HMH		 864}
865
866static struct device_attribute dev_attr_hotkey_bios_mask =
cc4c24e1 867 __ATTR(hotkey_bios_mask, S_IRUGO, hotkey_bios_mask_show, NULL);
a0416420 868
9b010de5
HMH		 869/* sysfs hotkey all_mask ----------------------------------------------- */
870static ssize_t hotkey_all_mask_show(struct device *dev,
871 struct device_attribute *attr,
872 char *buf)
873{
874 return snprintf(buf, PAGE_SIZE, "0x%08x\n", hotkey_all_mask);
875}
876
877static struct device_attribute dev_attr_hotkey_all_mask =
878 __ATTR(hotkey_all_mask, S_IRUGO, hotkey_all_mask_show, NULL);
879
880/* sysfs hotkey recommended_mask --------------------------------------- */
881static ssize_t hotkey_recommended_mask_show(struct device *dev,
882 struct device_attribute *attr,
883 char *buf)
884{
885 return snprintf(buf, PAGE_SIZE, "0x%08x\n",
886 hotkey_all_mask & ~hotkey_reserved_mask);
887}
888
889static struct device_attribute dev_attr_hotkey_recommended_mask =
890 __ATTR(hotkey_recommended_mask, S_IRUGO,
891 hotkey_recommended_mask_show, NULL);
892
74941a69
HMH		 893/* sysfs hotkey radio_sw ----------------------------------------------- */
894static ssize_t hotkey_radio_sw_show(struct device *dev,
895 struct device_attribute *attr,
896 char *buf)
897{
898 int res, s;
899 res = hotkey_get_wlsw(&s);
900 if (res < 0)
901 return res;
902
903 return snprintf(buf, PAGE_SIZE, "%d\n", !!s);
904}
905
906static struct device_attribute dev_attr_hotkey_radio_sw =
907 __ATTR(hotkey_radio_sw, S_IRUGO, hotkey_radio_sw_show, NULL);
908
ff80f137
HMH		 909/* sysfs hotkey report_mode -------------------------------------------- */
910static ssize_t hotkey_report_mode_show(struct device *dev,
911 struct device_attribute *attr,
912 char *buf)
913{
914 return snprintf(buf, PAGE_SIZE, "%d\n",
915 (hotkey_report_mode != 0) ? hotkey_report_mode : 1);
916}
917
918static struct device_attribute dev_attr_hotkey_report_mode =
919 __ATTR(hotkey_report_mode, S_IRUGO, hotkey_report_mode_show, NULL);
920
a0416420
HMH		 921/* --------------------------------------------------------------------- */
922
ff80f137
HMH		 923static struct attribute *hotkey_attributes[] __initdata = {
924 &dev_attr_hotkey_enable.attr,
925 &dev_attr_hotkey_report_mode.attr,
926};
927
928static struct attribute *hotkey_mask_attributes[] __initdata = {
a0416420
HMH		 929 &dev_attr_hotkey_mask.attr,
930 &dev_attr_hotkey_bios_enabled.attr,
931 &dev_attr_hotkey_bios_mask.attr,
9b010de5
HMH		 932 &dev_attr_hotkey_all_mask.attr,
933 &dev_attr_hotkey_recommended_mask.attr,
a0416420
HMH		 934};
935
a5763f22 936static int __init hotkey_init(struct ibm_init_struct *iibm)
56b6aeb0 937{
edf0e0e5
HMH		 938
939 static u16 ibm_keycode_map[] __initdata = {
940 /* Scan Codes 0x00 to 0x0B: ACPI HKEY FN+F1..F12 */
941 KEY_FN_F1, KEY_FN_F2, KEY_COFFEE, KEY_SLEEP,
942 KEY_WLAN, KEY_FN_F6, KEY_SWITCHVIDEOMODE, KEY_FN_F8,
943 KEY_FN_F9, KEY_FN_F10, KEY_FN_F11, KEY_SUSPEND,
944 /* Scan codes 0x0C to 0x0F: Other ACPI HKEY hot keys */
945 KEY_UNKNOWN, /* 0x0C: FN+BACKSPACE */
946 KEY_UNKNOWN, /* 0x0D: FN+INSERT */
947 KEY_UNKNOWN, /* 0x0E: FN+DELETE */
948 KEY_RESERVED, /* 0x0F: FN+HOME (brightness up) */
949 /* Scan codes 0x10 to 0x1F: Extended ACPI HKEY hot keys */
950 KEY_RESERVED, /* 0x10: FN+END (brightness down) */
951 KEY_RESERVED, /* 0x11: FN+PGUP (thinklight toggle) */
952 KEY_UNKNOWN, /* 0x12: FN+PGDOWN */
953 KEY_ZOOM, /* 0x13: FN+SPACE (zoom) */
954 KEY_RESERVED, /* 0x14: VOLUME UP */
955 KEY_RESERVED, /* 0x15: VOLUME DOWN */
956 KEY_RESERVED, /* 0x16: MUTE */
957 KEY_VENDOR, /* 0x17: Thinkpad/AccessIBM/Lenovo */
958 /* (assignments unknown, please report if found) */
959 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN,
960 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN,
961 };
962 static u16 lenovo_keycode_map[] __initdata = {
963 /* Scan Codes 0x00 to 0x0B: ACPI HKEY FN+F1..F12 */
964 KEY_FN_F1, KEY_COFFEE, KEY_BATTERY, KEY_SLEEP,
965 KEY_WLAN, KEY_FN_F6, KEY_SWITCHVIDEOMODE, KEY_FN_F8,
966 KEY_FN_F9, KEY_FN_F10, KEY_FN_F11, KEY_SUSPEND,
967 /* Scan codes 0x0C to 0x0F: Other ACPI HKEY hot keys */
968 KEY_UNKNOWN, /* 0x0C: FN+BACKSPACE */
969 KEY_UNKNOWN, /* 0x0D: FN+INSERT */
970 KEY_UNKNOWN, /* 0x0E: FN+DELETE */
971 KEY_BRIGHTNESSUP, /* 0x0F: FN+HOME (brightness up) */
972 /* Scan codes 0x10 to 0x1F: Extended ACPI HKEY hot keys */
973 KEY_BRIGHTNESSDOWN, /* 0x10: FN+END (brightness down) */
974 KEY_RESERVED, /* 0x11: FN+PGUP (thinklight toggle) */
975 KEY_UNKNOWN, /* 0x12: FN+PGDOWN */
976 KEY_ZOOM, /* 0x13: FN+SPACE (zoom) */
977 KEY_RESERVED, /* 0x14: VOLUME UP */
978 KEY_RESERVED, /* 0x15: VOLUME DOWN */
979 KEY_RESERVED, /* 0x16: MUTE */
980 KEY_VENDOR, /* 0x17: Thinkpad/AccessIBM/Lenovo */
981 /* (assignments unknown, please report if found) */
982 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN,
983 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN,
984 };
985
986#define TPACPI_HOTKEY_MAP_LEN ARRAY_SIZE(ibm_keycode_map)
987#define TPACPI_HOTKEY_MAP_SIZE sizeof(ibm_keycode_map)
988#define TPACPI_HOTKEY_MAP_TYPESIZE sizeof(ibm_keycode_map[0])
989
6a38abbf 990 int res, i;
74941a69 991 int status;
b86c4722 992
fe08bc4b
HMH		 993 vdbg_printk(TPACPI_DBG_INIT, "initializing hotkey subdriver\n");
994
6a38abbf
HMH		 995 BUG_ON(!tpacpi_inputdev);
996
8d376cd6 997 IBM_ACPIHANDLE_INIT(hkey);
40ca9fdf 998 mutex_init(&hotkey_mutex);
5fba344c 999
56b6aeb0 1000 /* hotkey not supported on 570 */
d8fd94d9 1001 tp_features.hotkey = hkey_handle != NULL;
56b6aeb0 1002
fe08bc4b 1003 vdbg_printk(TPACPI_DBG_INIT, "hotkeys are %s\n",
d8fd94d9 1004 str_supported(tp_features.hotkey));
fe08bc4b 1005
d8fd94d9 1006 if (tp_features.hotkey) {
ff80f137 1007 hotkey_dev_attributes = create_attr_set(8, NULL);
a0416420
HMH		 1008 if (!hotkey_dev_attributes)
1009 return -ENOMEM;
ff80f137
HMH		 1010 res = add_many_to_attr_set(hotkey_dev_attributes,
1011 hotkey_attributes,
1012 ARRAY_SIZE(hotkey_attributes));
a0416420
HMH		 1013 if (res)
1014 return res;
1015
56b6aeb0
HMH		 1016 /* mask not supported on 570, 600e/x, 770e, 770x, A21e, A2xm/p,
1017 A30, R30, R31, T20-22, X20-21, X22-24 */
d8fd94d9
HMH		 1018 tp_features.hotkey_mask =
1019 acpi_evalf(hkey_handle, NULL, "DHKN", "qv");
56b6aeb0 1020
fe08bc4b 1021 vdbg_printk(TPACPI_DBG_INIT, "hotkey masks are %s\n",
d8fd94d9 1022 str_supported(tp_features.hotkey_mask));
fe08bc4b 1023
9b010de5
HMH		 1024 if (tp_features.hotkey_mask) {
1025 /* MHKA available in A31, R40, R40e, T4x, X31, and later */
1026 if (!acpi_evalf(hkey_handle, &hotkey_all_mask,
1027 "MHKA", "qd"))
1028 hotkey_all_mask = 0x080cU; /* FN+F12, FN+F4, FN+F3 */
1029 }
1030
b86c4722 1031 res = hotkey_get(&hotkey_orig_status, &hotkey_orig_mask);
a0416420
HMH		 1032 if (!res && tp_features.hotkey_mask) {
1033 res = add_many_to_attr_set(hotkey_dev_attributes,
1034 hotkey_mask_attributes,
1035 ARRAY_SIZE(hotkey_mask_attributes));
1036 }
74941a69
HMH		 1037
1038 /* Not all thinkpads have a hardware radio switch */
1039 if (!res && acpi_evalf(hkey_handle, &status, "WLSW", "qd")) {
1040 tp_features.hotkey_wlsw = 1;
1041 printk(IBM_INFO
1042 "radio switch found; radios are %s\n",
1043 enabled(status, 0));
1044 res = add_to_attr_set(hotkey_dev_attributes,
1045 &dev_attr_hotkey_radio_sw.attr);
1046 }
1047
a0416420
HMH		 1048 if (!res)
1049 res = register_attr_set_with_sysfs(
1050 hotkey_dev_attributes,
1051 &tpacpi_pdev->dev.kobj);
b86c4722
HMH		 1052 if (res)
1053 return res;
6a38abbf 1054
edf0e0e5
HMH		 1055 /* Set up key map */
1056
1057 hotkey_keycode_map = kmalloc(TPACPI_HOTKEY_MAP_SIZE,
1058 GFP_KERNEL);
1059 if (!hotkey_keycode_map) {
1060 printk(IBM_ERR "failed to allocate memory for key map\n");
1061 return -ENOMEM;
1062 }
1063
1064 if (thinkpad_id.vendor == PCI_VENDOR_ID_LENOVO) {
1065 dbg_printk(TPACPI_DBG_INIT,
1066 "using Lenovo default hot key map\n");
1067 memcpy(hotkey_keycode_map, &lenovo_keycode_map,
1068 TPACPI_HOTKEY_MAP_SIZE);
1069 } else {
1070 dbg_printk(TPACPI_DBG_INIT,
1071 "using IBM default hot key map\n");
1072 memcpy(hotkey_keycode_map, &ibm_keycode_map,
1073 TPACPI_HOTKEY_MAP_SIZE);
1074 }
1075
6a38abbf
HMH		 1076 set_bit(EV_KEY, tpacpi_inputdev->evbit);
1077 set_bit(EV_MSC, tpacpi_inputdev->evbit);
1078 set_bit(MSC_SCAN, tpacpi_inputdev->mscbit);
edf0e0e5
HMH		 1079 tpacpi_inputdev->keycodesize = TPACPI_HOTKEY_MAP_TYPESIZE;
1080 tpacpi_inputdev->keycodemax = TPACPI_HOTKEY_MAP_LEN;
1081 tpacpi_inputdev->keycode = hotkey_keycode_map;
1082 for (i = 0; i < TPACPI_HOTKEY_MAP_LEN; i++) {
6a38abbf
HMH		 1083 if (hotkey_keycode_map[i] != KEY_RESERVED) {
1084 set_bit(hotkey_keycode_map[i],
1085 tpacpi_inputdev->keybit);
1086 } else {
1087 if (i < sizeof(hotkey_reserved_mask)*8)
1088 hotkey_reserved_mask |= 1 << i;
1089 }
1090 }
1091
5c29d58f
HMH		 1092 if (tp_features.hotkey_wlsw) {
1093 set_bit(EV_SW, tpacpi_inputdev->evbit);
1094 set_bit(SW_RADIO, tpacpi_inputdev->swbit);
1095 }
1096
1a343760
HMH		 1097 dbg_printk(TPACPI_DBG_INIT,
1098 "enabling hot key handling\n");
1099 res = hotkey_set(1, (hotkey_all_mask & ~hotkey_reserved_mask)
1100 | hotkey_orig_mask);
1101 if (res)
1102 return res;
ff80f137
HMH		 1103
1104 dbg_printk(TPACPI_DBG_INIT,
1105 "legacy hot key reporting over procfs %s\n",
1106 (hotkey_report_mode < 2) ?
1107 "enabled" : "disabled");
56b6aeb0
HMH		 1108 }
1109
d8fd94d9 1110 return (tp_features.hotkey)? 0 : 1;
56b6aeb0
HMH		 1111}
1112
1113static void hotkey_exit(void)
1114{
b86c4722
HMH		 1115 int res;
1116
d8fd94d9 1117 if (tp_features.hotkey) {
fe08bc4b 1118 dbg_printk(TPACPI_DBG_EXIT, "restoring original hotkey mask\n");
b86c4722
HMH		 1119 res = hotkey_set(hotkey_orig_status, hotkey_orig_mask);
1120 if (res)
1121 printk(IBM_ERR "failed to restore hotkey to BIOS defaults\n");
5fba344c 1122 }
a0416420
HMH		 1123
1124 if (hotkey_dev_attributes) {
1125 delete_attr_set(hotkey_dev_attributes, &tpacpi_pdev->dev.kobj);
1126 hotkey_dev_attributes = NULL;
1127 }
56b6aeb0
HMH		 1128}
1129
6a38abbf
HMH		 1130static void tpacpi_input_send_key(unsigned int scancode,
1131 unsigned int keycode)
1132{
1133 if (keycode != KEY_RESERVED) {
1134 input_report_key(tpacpi_inputdev, keycode, 1);
1135 if (keycode == KEY_UNKNOWN)
1136 input_event(tpacpi_inputdev, EV_MSC, MSC_SCAN,
1137 scancode);
1138 input_sync(tpacpi_inputdev);
1139
1140 input_report_key(tpacpi_inputdev, keycode, 0);
1141 if (keycode == KEY_UNKNOWN)
1142 input_event(tpacpi_inputdev, EV_MSC, MSC_SCAN,
1143 scancode);
1144 input_sync(tpacpi_inputdev);
1145 }
1146}
1147
5c29d58f
HMH		 1148static void tpacpi_input_send_radiosw(void)
1149{
1150 int wlsw;
1151
f4e1e43c 1152 if (tp_features.hotkey_wlsw && !hotkey_get_wlsw(&wlsw)) {
5c29d58f
HMH		 1153 input_report_switch(tpacpi_inputdev,
1154 SW_RADIO, !!wlsw);
f4e1e43c
HMH		 1155 input_sync(tpacpi_inputdev);
1156 }
5c29d58f
HMH		 1157}
1158
56b6aeb0
HMH		 1159static void hotkey_notify(struct ibm_struct *ibm, u32 event)
1160{
6a38abbf
HMH		 1161 u32 hkey;
1162 unsigned int keycode, scancode;
ff80f137 1163 int send_acpi_ev = 0;
56b6aeb0 1164
ae92bd17 1165 if (event == 0x80 && acpi_evalf(hkey_handle, &hkey, "MHKP", "d")) {
ff80f137
HMH		 1166 switch (hkey >> 12) {
1167 case 1:
1168 /* 0x1000-0x1FFF: key presses */
1169 scancode = hkey & 0xfff;
1170 if (scancode > 0 && scancode < 0x21) {
1171 scancode--;
1172 keycode = hotkey_keycode_map[scancode];
1173 tpacpi_input_send_key(scancode, keycode);
1174 } else {
1175 printk(IBM_ERR
1176 "hotkey 0x%04x out of range for keyboard map\n",
1177 hkey);
1178 send_acpi_ev = 1;
1179 }
1180 break;
1181 case 5:
1182 /* 0x5000-0x5FFF: LID */
1183 /* we don't handle it through this path, just
1184 * eat up known LID events */
1185 if (hkey != 0x5001 && hkey != 0x5002) {
1186 printk(IBM_ERR
1187 "unknown LID-related hotkey event: 0x%04x\n",
1188 hkey);
1189 send_acpi_ev = 1;
1190 }
1191 break;
1192 case 7:
1193 /* 0x7000-0x7FFF: misc */
1194 if (tp_features.hotkey_wlsw && hkey == 0x7000) {
1195 tpacpi_input_send_radiosw();
6a38abbf 1196 break;
6a38abbf 1197 }
ff80f137
HMH		 1198 /* fallthrough to default */
1199 default:
1200 /* case 2: dock-related */
1201 /* 0x2305 - T43 waking up due to bay lever eject while aslept */
1202 /* case 3: ultra-bay related. maybe bay in dock? */
1203 /* 0x3003 - T43 after wake up by bay lever eject (0x2305) */
1204 printk(IBM_NOTICE "unhandled HKEY event 0x%04x\n", hkey);
1205 send_acpi_ev = 1;
6a38abbf 1206 }
ae92bd17
HMH		 1207 } else {
1208 printk(IBM_ERR "unknown hotkey notification event %d\n", event);
ff80f137
HMH		 1209 hkey = 0;
1210 send_acpi_ev = 1;
1211 }
1212
1213 /* Legacy events */
1214 if (send_acpi_ev || hotkey_report_mode < 2)
1215 acpi_bus_generate_proc_event(ibm->acpi->device, event, hkey);
1216
1217 /* netlink events */
1218 if (send_acpi_ev) {
1219 acpi_bus_generate_netlink_event(ibm->acpi->device->pnp.device_class,
1220 ibm->acpi->device->dev.bus_id,
1221 event, hkey);
56b6aeb0
HMH		 1222 }
1223}
1224
5c29d58f
HMH		 1225static void hotkey_resume(void)
1226{
1227 tpacpi_input_send_radiosw();
1228}
1229
40ca9fdf
HMH		 1230/*
1231 * Call with hotkey_mutex held
1232 */
ae92bd17 1233static int hotkey_get(int *status, u32 *mask)
1da177e4
LT		 1234{
1235 if (!acpi_evalf(hkey_handle, status, "DHKC", "d"))
b86c4722 1236 return -EIO;
78f81cc4 1237
d8fd94d9 1238 if (tp_features.hotkey_mask)
78f81cc4 1239 if (!acpi_evalf(hkey_handle, mask, "DHKN", "d"))
b86c4722 1240 return -EIO;
78f81cc4 1241
b86c4722 1242 return 0;
1da177e4
LT		 1243}
1244
40ca9fdf
HMH		 1245/*
1246 * Call with hotkey_mutex held
1247 */
ae92bd17 1248static int hotkey_set(int status, u32 mask)
1da177e4
LT		 1249{
1250 int i;
1251
1252 if (!acpi_evalf(hkey_handle, NULL, "MHKC", "vd", status))
b86c4722 1253 return -EIO;
1da177e4 1254
d8fd94d9 1255 if (tp_features.hotkey_mask)
78f81cc4
BD		 1256 for (i = 0; i < 32; i++) {
1257 int bit = ((1 << i) & mask) != 0;
1258 if (!acpi_evalf(hkey_handle,
1259 NULL, "MHKM", "vdd", i + 1, bit))
b86c4722 1260 return -EIO;
78f81cc4 1261 }
1da177e4 1262
b86c4722 1263 return 0;
1da177e4
LT		 1264}
1265
a0416420 1266/* procfs -------------------------------------------------------------- */
78f81cc4 1267static int hotkey_read(char *p)
1da177e4 1268{
ae92bd17
HMH		 1269 int res, status;
1270 u32 mask;
1da177e4
LT		 1271 int len = 0;
1272
d8fd94d9 1273 if (!tp_features.hotkey) {
78f81cc4
BD		 1274 len += sprintf(p + len, "status:\t\tnot supported\n");
1275 return len;
1276 }
1277
40ca9fdf
HMH		 1278 res = mutex_lock_interruptible(&hotkey_mutex);
1279 if (res < 0)
1280 return res;
b86c4722 1281 res = hotkey_get(&status, &mask);
40ca9fdf 1282 mutex_unlock(&hotkey_mutex);
b86c4722
HMH		 1283 if (res)
1284 return res;
1da177e4
LT		 1285
1286 len += sprintf(p + len, "status:\t\t%s\n", enabled(status, 0));
d8fd94d9 1287 if (tp_features.hotkey_mask) {
ae92bd17 1288 len += sprintf(p + len, "mask:\t\t0x%08x\n", mask);
1da177e4
LT		 1289 len += sprintf(p + len,
1290 "commands:\tenable, disable, reset, <mask>\n");
1291 } else {
1292 len += sprintf(p + len, "mask:\t\tnot supported\n");
1293 len += sprintf(p + len, "commands:\tenable, disable, reset\n");
1294 }
1295
1296 return len;
1297}
1298
78f81cc4 1299static int hotkey_write(char *buf)
1da177e4 1300{
ae92bd17
HMH		 1301 int res, status;
1302 u32 mask;
1da177e4
LT		 1303 char *cmd;
1304 int do_cmd = 0;
1305
d8fd94d9 1306 if (!tp_features.hotkey)
1da177e4
LT		 1307 return -ENODEV;
1308
40ca9fdf
HMH		 1309 res = mutex_lock_interruptible(&hotkey_mutex);
1310 if (res < 0)
1311 return res;
1312
b86c4722
HMH		 1313 res = hotkey_get(&status, &mask);
1314 if (res)
40ca9fdf 1315 goto errexit;
78f81cc4 1316
40ca9fdf 1317 res = 0;
1da177e4
LT		 1318 while ((cmd = next_cmd(&buf))) {
1319 if (strlencmp(cmd, "enable") == 0) {
1320 status = 1;
1321 } else if (strlencmp(cmd, "disable") == 0) {
1322 status = 0;
1323 } else if (strlencmp(cmd, "reset") == 0) {
78f81cc4
BD		 1324 status = hotkey_orig_status;
1325 mask = hotkey_orig_mask;
1da177e4
LT		 1326 } else if (sscanf(cmd, "0x%x", &mask) == 1) {
1327 /* mask set */
1328 } else if (sscanf(cmd, "%x", &mask) == 1) {
1329 /* mask set */
40ca9fdf
HMH		 1330 } else {
1331 res = -EINVAL;
1332 goto errexit;
1333 }
1da177e4
LT		 1334 do_cmd = 1;
1335 }
1336
40ca9fdf 1337 if (do_cmd)
b86c4722 1338 res = hotkey_set(status, mask);
1da177e4 1339
40ca9fdf
HMH		 1340errexit:
1341 mutex_unlock(&hotkey_mutex);
1342 return res;
78f81cc4 1343}
1da177e4 1344
1ba90e3a
TR		 1345static const struct acpi_device_id ibm_htk_device_ids[] = {
1346 {IBM_HKEY_HID, 0},
1347 {"", 0},
1348};
1349
8d376cd6 1350static struct tp_acpi_drv_struct ibm_hotkey_acpidriver = {
1ba90e3a 1351 .hid = ibm_htk_device_ids,
8d376cd6
HMH		 1352 .notify = hotkey_notify,
1353 .handle = &hkey_handle,
1354 .type = ACPI_DEVICE_NOTIFY,
1355};
1356
a5763f22
HMH		 1357static struct ibm_struct hotkey_driver_data = {
1358 .name = "hotkey",
a5763f22
HMH		 1359 .read = hotkey_read,
1360 .write = hotkey_write,
1361 .exit = hotkey_exit,
5c29d58f 1362 .resume = hotkey_resume,
8d376cd6 1363 .acpi = &ibm_hotkey_acpidriver,
a5763f22
HMH		 1364};
1365
56b6aeb0
HMH		 1366/*************************************************************************
1367 * Bluetooth subdriver
1368 */
1da177e4 1369
d3a6ade4
HMH		 1370/* sysfs bluetooth enable ---------------------------------------------- */
1371static ssize_t bluetooth_enable_show(struct device *dev,
1372 struct device_attribute *attr,
1373 char *buf)
1374{
1375 int status;
1376
1377 status = bluetooth_get_radiosw();
1378 if (status < 0)
1379 return status;
1380
1381 return snprintf(buf, PAGE_SIZE, "%d\n", status ? 1 : 0);
1382}
1383
1384static ssize_t bluetooth_enable_store(struct device *dev,
1385 struct device_attribute *attr,
1386 const char *buf, size_t count)
1387{
1388 unsigned long t;
1389 int res;
1390
1391 if (parse_strtoul(buf, 1, &t))
1392 return -EINVAL;
1393
1394 res = bluetooth_set_radiosw(t);
1395
1396 return (res) ? res : count;
1397}
1398
1399static struct device_attribute dev_attr_bluetooth_enable =
cc4c24e1 1400 __ATTR(bluetooth_enable, S_IWUSR | S_IRUGO,
d3a6ade4
HMH		 1401 bluetooth_enable_show, bluetooth_enable_store);
1402
1403/* --------------------------------------------------------------------- */
1404
1405static struct attribute *bluetooth_attributes[] = {
1406 &dev_attr_bluetooth_enable.attr,
1407 NULL
1408};
1409
1410static const struct attribute_group bluetooth_attr_group = {
d3a6ade4
HMH		 1411 .attrs = bluetooth_attributes,
1412};
1413
a5763f22 1414static int __init bluetooth_init(struct ibm_init_struct *iibm)
1da177e4 1415{
d3a6ade4 1416 int res;
d6fdd1e9
HMH		 1417 int status = 0;
1418
fe08bc4b
HMH		 1419 vdbg_printk(TPACPI_DBG_INIT, "initializing bluetooth subdriver\n");
1420
8d376cd6 1421 IBM_ACPIHANDLE_INIT(hkey);
5fba344c 1422
78f81cc4
BD		 1423 /* bluetooth not supported on 570, 600e/x, 770e, 770x, A21e, A2xm/p,
1424 G4x, R30, R31, R40e, R50e, T20-22, X20-21 */
d8fd94d9 1425 tp_features.bluetooth = hkey_handle &&
d6fdd1e9
HMH		 1426 acpi_evalf(hkey_handle, &status, "GBDC", "qd");
1427
1428 vdbg_printk(TPACPI_DBG_INIT, "bluetooth is %s, status 0x%02x\n",
1429 str_supported(tp_features.bluetooth),
1430 status);
1431
d3a6ade4
HMH		 1432 if (tp_features.bluetooth) {
1433 if (!(status & TP_ACPI_BLUETOOTH_HWPRESENT)) {
1434 /* no bluetooth hardware present in system */
1435 tp_features.bluetooth = 0;
1436 dbg_printk(TPACPI_DBG_INIT,
1437 "bluetooth hardware not installed\n");
1438 } else {
1439 res = sysfs_create_group(&tpacpi_pdev->dev.kobj,
1440 &bluetooth_attr_group);
1441 if (res)
1442 return res;
1443 }
d6fdd1e9 1444 }
fe08bc4b 1445
d8fd94d9 1446 return (tp_features.bluetooth)? 0 : 1;
1da177e4
LT		 1447}
1448
d3a6ade4
HMH		 1449static void bluetooth_exit(void)
1450{
1451 sysfs_remove_group(&tpacpi_pdev->dev.kobj,
1452 &bluetooth_attr_group);
1453}
1454
d6fdd1e9 1455static int bluetooth_get_radiosw(void)
1da177e4
LT		 1456{
1457 int status;
1458
d6fdd1e9
HMH		 1459 if (!tp_features.bluetooth)
1460 return -ENODEV;
1da177e4 1461
d6fdd1e9
HMH		 1462 if (!acpi_evalf(hkey_handle, &status, "GBDC", "d"))
1463 return -EIO;
1464
1465 return ((status & TP_ACPI_BLUETOOTH_RADIOSSW) != 0);
1466}
1467
1468static int bluetooth_set_radiosw(int radio_on)
1469{
1470 int status;
1471
1472 if (!tp_features.bluetooth)
1473 return -ENODEV;
1474
1475 if (!acpi_evalf(hkey_handle, &status, "GBDC", "d"))
1476 return -EIO;
1477 if (radio_on)
1478 status |= TP_ACPI_BLUETOOTH_RADIOSSW;
1479 else
1480 status &= ~TP_ACPI_BLUETOOTH_RADIOSSW;
1481 if (!acpi_evalf(hkey_handle, NULL, "SBDC", "vd", status))
1482 return -EIO;
1483
1484 return 0;
1da177e4
LT		 1485}
1486
d3a6ade4 1487/* procfs -------------------------------------------------------------- */
78f81cc4 1488static int bluetooth_read(char *p)
1da177e4
LT		 1489{
1490 int len = 0;
d6fdd1e9 1491 int status = bluetooth_get_radiosw();
1da177e4 1492
d8fd94d9 1493 if (!tp_features.bluetooth)
1da177e4 1494 len += sprintf(p + len, "status:\t\tnot supported\n");
1da177e4 1495 else {
d6fdd1e9
HMH		 1496 len += sprintf(p + len, "status:\t\t%s\n",
1497 (status)? "enabled" : "disabled");
1da177e4
LT		 1498 len += sprintf(p + len, "commands:\tenable, disable\n");
1499 }
1500
1501 return len;
1502}
1503
78f81cc4 1504static int bluetooth_write(char *buf)
1da177e4 1505{
1da177e4 1506 char *cmd;
1da177e4 1507
d8fd94d9 1508 if (!tp_features.bluetooth)
78f81cc4 1509 return -ENODEV;
1da177e4
LT		 1510
1511 while ((cmd = next_cmd(&buf))) {
1512 if (strlencmp(cmd, "enable") == 0) {
d6fdd1e9 1513 bluetooth_set_radiosw(1);
1da177e4 1514 } else if (strlencmp(cmd, "disable") == 0) {
d6fdd1e9 1515 bluetooth_set_radiosw(0);
1da177e4
LT		 1516 } else
1517 return -EINVAL;
1da177e4
LT		 1518 }
1519
1da177e4
LT		 1520 return 0;
1521}
1522
a5763f22
HMH		 1523static struct ibm_struct bluetooth_driver_data = {
1524 .name = "bluetooth",
1525 .read = bluetooth_read,
1526 .write = bluetooth_write,
d3a6ade4 1527 .exit = bluetooth_exit,
a5763f22
HMH		 1528};
1529
56b6aeb0
HMH		 1530/*************************************************************************
1531 * Wan subdriver
1532 */
1533
d3a6ade4
HMH		 1534/* sysfs wan enable ---------------------------------------------------- */
1535static ssize_t wan_enable_show(struct device *dev,
1536 struct device_attribute *attr,
1537 char *buf)
1538{
1539 int status;
1540
1541 status = wan_get_radiosw();
1542 if (status < 0)
1543 return status;
1544
1545 return snprintf(buf, PAGE_SIZE, "%d\n", status ? 1 : 0);
1546}
1547
1548static ssize_t wan_enable_store(struct device *dev,
1549 struct device_attribute *attr,
1550 const char *buf, size_t count)
1551{
1552 unsigned long t;
1553 int res;
1554
1555 if (parse_strtoul(buf, 1, &t))
1556 return -EINVAL;
1557
1558 res = wan_set_radiosw(t);
1559
1560 return (res) ? res : count;
1561}
1562
1563static struct device_attribute dev_attr_wan_enable =
cc4c24e1 1564 __ATTR(wwan_enable, S_IWUSR | S_IRUGO,
d3a6ade4
HMH		 1565 wan_enable_show, wan_enable_store);
1566
1567/* --------------------------------------------------------------------- */
1568
1569static struct attribute *wan_attributes[] = {
1570 &dev_attr_wan_enable.attr,
1571 NULL
1572};
1573
1574static const struct attribute_group wan_attr_group = {
d3a6ade4
HMH		 1575 .attrs = wan_attributes,
1576};
1577
a5763f22 1578static int __init wan_init(struct ibm_init_struct *iibm)
42adb53c 1579{
d3a6ade4 1580 int res;
d6fdd1e9
HMH		 1581 int status = 0;
1582
fe08bc4b
HMH		 1583 vdbg_printk(TPACPI_DBG_INIT, "initializing wan subdriver\n");
1584
8d376cd6 1585 IBM_ACPIHANDLE_INIT(hkey);
5fba344c 1586
d8fd94d9 1587 tp_features.wan = hkey_handle &&
d6fdd1e9
HMH		 1588 acpi_evalf(hkey_handle, &status, "GWAN", "qd");
1589
1590 vdbg_printk(TPACPI_DBG_INIT, "wan is %s, status 0x%02x\n",
1591 str_supported(tp_features.wan),
1592 status);
1593
d3a6ade4
HMH		 1594 if (tp_features.wan) {
1595 if (!(status & TP_ACPI_WANCARD_HWPRESENT)) {
1596 /* no wan hardware present in system */
1597 tp_features.wan = 0;
1598 dbg_printk(TPACPI_DBG_INIT,
1599 "wan hardware not installed\n");
1600 } else {
1601 res = sysfs_create_group(&tpacpi_pdev->dev.kobj,
1602 &wan_attr_group);
1603 if (res)
1604 return res;
1605 }
d6fdd1e9 1606 }
fe08bc4b 1607
d8fd94d9 1608 return (tp_features.wan)? 0 : 1;
42adb53c
JF		 1609}
1610
d3a6ade4
HMH		 1611static void wan_exit(void)
1612{
1613 sysfs_remove_group(&tpacpi_pdev->dev.kobj,
1614 &wan_attr_group);
1615}
1616
d6fdd1e9 1617static int wan_get_radiosw(void)
42adb53c
JF		 1618{
1619 int status;
1620
d6fdd1e9
HMH		 1621 if (!tp_features.wan)
1622 return -ENODEV;
42adb53c 1623
d6fdd1e9
HMH		 1624 if (!acpi_evalf(hkey_handle, &status, "GWAN", "d"))
1625 return -EIO;
1626
1627 return ((status & TP_ACPI_WANCARD_RADIOSSW) != 0);
1628}
1629
1630static int wan_set_radiosw(int radio_on)
1631{
1632 int status;
1633
1634 if (!tp_features.wan)
1635 return -ENODEV;
1636
1637 if (!acpi_evalf(hkey_handle, &status, "GWAN", "d"))
1638 return -EIO;
1639 if (radio_on)
1640 status |= TP_ACPI_WANCARD_RADIOSSW;
1641 else
1642 status &= ~TP_ACPI_WANCARD_RADIOSSW;
1643 if (!acpi_evalf(hkey_handle, NULL, "SWAN", "vd", status))
1644 return -EIO;
1645
1646 return 0;
42adb53c
JF		 1647}
1648
d3a6ade4 1649/* procfs -------------------------------------------------------------- */
42adb53c
JF		 1650static int wan_read(char *p)
1651{
1652 int len = 0;
d6fdd1e9 1653 int status = wan_get_radiosw();
42adb53c 1654
d8fd94d9 1655 if (!tp_features.wan)
42adb53c 1656 len += sprintf(p + len, "status:\t\tnot supported\n");
42adb53c 1657 else {
d6fdd1e9
HMH		 1658 len += sprintf(p + len, "status:\t\t%s\n",
1659 (status)? "enabled" : "disabled");
42adb53c
JF		 1660 len += sprintf(p + len, "commands:\tenable, disable\n");
1661 }
1662
1663 return len;
1664}
1665
1666static int wan_write(char *buf)
1667{
42adb53c 1668 char *cmd;
42adb53c 1669
d8fd94d9 1670 if (!tp_features.wan)
42adb53c
JF		 1671 return -ENODEV;
1672
1673 while ((cmd = next_cmd(&buf))) {
1674 if (strlencmp(cmd, "enable") == 0) {
d6fdd1e9 1675 wan_set_radiosw(1);
42adb53c 1676 } else if (strlencmp(cmd, "disable") == 0) {
d6fdd1e9 1677 wan_set_radiosw(0);
42adb53c
JF		 1678 } else
1679 return -EINVAL;
42adb53c
JF		 1680 }
1681
42adb53c
JF		 1682 return 0;
1683}
1684
a5763f22
HMH		 1685static struct ibm_struct wan_driver_data = {
1686 .name = "wan",
1687 .read = wan_read,
1688 .write = wan_write,
d3a6ade4 1689 .exit = wan_exit,
92641177 1690 .flags.experimental = 1,
a5763f22
HMH		 1691};
1692
56b6aeb0
HMH		 1693/*************************************************************************
1694 * Video subdriver
1695 */
1696
9a8e1738
HMH		 1697static enum video_access_mode video_supported;
1698static int video_orig_autosw;
78f81cc4 1699
56b6aeb0
HMH		 1700IBM_HANDLE(vid, root, "\\_SB.PCI.AGP.VGA", /* 570 */
1701 "\\_SB.PCI0.AGP0.VID0", /* 600e/x, 770x */
1702 "\\_SB.PCI0.VID0", /* 770e */
1703 "\\_SB.PCI0.VID", /* A21e, G4x, R50e, X30, X40 */
1704 "\\_SB.PCI0.AGP.VID", /* all others */
1705 ); /* R30, R31 */
1706
1707IBM_HANDLE(vid2, root, "\\_SB.PCI0.AGPB.VID"); /* G41 */
1708
a5763f22 1709static int __init video_init(struct ibm_init_struct *iibm)
1da177e4 1710{
78f81cc4
BD		 1711 int ivga;
1712
fe08bc4b
HMH		 1713 vdbg_printk(TPACPI_DBG_INIT, "initializing video subdriver\n");
1714
8d376cd6
HMH		 1715 IBM_ACPIHANDLE_INIT(vid);
1716 IBM_ACPIHANDLE_INIT(vid2);
5fba344c 1717
78f81cc4
BD		 1718 if (vid2_handle && acpi_evalf(NULL, &ivga, "\\IVGA", "d") && ivga)
1719 /* G41, assume IVGA doesn't change */
1720 vid_handle = vid2_handle;
1721
1722 if (!vid_handle)
1723 /* video switching not supported on R30, R31 */
efa27145 1724 video_supported = TPACPI_VIDEO_NONE;
78f81cc4
BD		 1725 else if (acpi_evalf(vid_handle, &video_orig_autosw, "SWIT", "qd"))
1726 /* 570 */
efa27145 1727 video_supported = TPACPI_VIDEO_570;
78f81cc4
BD		 1728 else if (acpi_evalf(vid_handle, &video_orig_autosw, "^VADL", "qd"))
1729 /* 600e/x, 770e, 770x */
efa27145 1730 video_supported = TPACPI_VIDEO_770;
78f81cc4
BD		 1731 else
1732 /* all others */
efa27145 1733 video_supported = TPACPI_VIDEO_NEW;
1da177e4 1734
fe08bc4b
HMH		 1735 vdbg_printk(TPACPI_DBG_INIT, "video is %s, mode %d\n",
1736 str_supported(video_supported != TPACPI_VIDEO_NONE),
1737 video_supported);
1738
5fba344c 1739 return (video_supported != TPACPI_VIDEO_NONE)? 0 : 1;
1da177e4
LT		 1740}
1741
56b6aeb0
HMH		 1742static void video_exit(void)
1743{
83f34724
HMH		 1744 dbg_printk(TPACPI_DBG_EXIT,
1745 "restoring original video autoswitch mode\n");
1746 if (video_autosw_set(video_orig_autosw))
1747 printk(IBM_ERR "error while trying to restore original "
1748 "video autoswitch mode\n");
56b6aeb0
HMH		 1749}
1750
83f34724 1751static int video_outputsw_get(void)
1da177e4
LT		 1752{
1753 int status = 0;
1754 int i;
1755
83f34724
HMH		 1756 switch (video_supported) {
1757 case TPACPI_VIDEO_570:
1758 if (!acpi_evalf(NULL, &i, "\\_SB.PHS", "dd",
1759 TP_ACPI_VIDEO_570_PHSCMD))
1760 return -EIO;
1761 status = i & TP_ACPI_VIDEO_570_PHSMASK;
1762 break;
1763 case TPACPI_VIDEO_770:
1764 if (!acpi_evalf(NULL, &i, "\\VCDL", "d"))
1765 return -EIO;
1766 if (i)
1767 status |= TP_ACPI_VIDEO_S_LCD;
1768 if (!acpi_evalf(NULL, &i, "\\VCDC", "d"))
1769 return -EIO;
1770 if (i)
1771 status |= TP_ACPI_VIDEO_S_CRT;
1772 break;
1773 case TPACPI_VIDEO_NEW:
1774 if (!acpi_evalf(NULL, NULL, "\\VUPS", "vd", 1) ||
1775 !acpi_evalf(NULL, &i, "\\VCDC", "d"))
1776 return -EIO;
1777 if (i)
1778 status |= TP_ACPI_VIDEO_S_CRT;
1779
1780 if (!acpi_evalf(NULL, NULL, "\\VUPS", "vd", 0) ||
1781 !acpi_evalf(NULL, &i, "\\VCDL", "d"))
1782 return -EIO;
1783 if (i)
1784 status |= TP_ACPI_VIDEO_S_LCD;
1785 if (!acpi_evalf(NULL, &i, "\\VCDD", "d"))
1786 return -EIO;
1787 if (i)
1788 status |= TP_ACPI_VIDEO_S_DVI;
1789 break;
1790 default:
1791 return -ENOSYS;
78f81cc4
BD		 1792 }
1793
1794 return status;
1795}
1da177e4 1796
83f34724 1797static int video_outputsw_set(int status)
78f81cc4 1798{
83f34724
HMH		 1799 int autosw;
1800 int res = 0;
1801
1802 switch (video_supported) {
1803 case TPACPI_VIDEO_570:
1804 res = acpi_evalf(NULL, NULL,
1805 "\\_SB.PHS2", "vdd",
1806 TP_ACPI_VIDEO_570_PHS2CMD,
1807 status | TP_ACPI_VIDEO_570_PHS2SET);
1808 break;
1809 case TPACPI_VIDEO_770:
1810 autosw = video_autosw_get();
1811 if (autosw < 0)
1812 return autosw;
1da177e4 1813
83f34724
HMH		 1814 res = video_autosw_set(1);
1815 if (res)
1816 return res;
1817 res = acpi_evalf(vid_handle, NULL,
1818 "ASWT", "vdd", status * 0x100, 0);
1819 if (!autosw && video_autosw_set(autosw)) {
1820 printk(IBM_ERR "video auto-switch left enabled due to error\n");
1821 return -EIO;
1822 }
1823 break;
1824 case TPACPI_VIDEO_NEW:
1825 res = acpi_evalf(NULL, NULL, "\\VUPS", "vd", 0x80) &&
1826 acpi_evalf(NULL, NULL, "\\VSDS", "vdd", status, 1);
1827 break;
1828 default:
1829 return -ENOSYS;
1830 }
1da177e4 1831
83f34724 1832 return (res)? 0 : -EIO;
1da177e4
LT		 1833}
1834
83f34724 1835static int video_autosw_get(void)
78f81cc4 1836{
83f34724 1837 int autosw = 0;
78f81cc4 1838
83f34724
HMH		 1839 switch (video_supported) {
1840 case TPACPI_VIDEO_570:
1841 if (!acpi_evalf(vid_handle, &autosw, "SWIT", "d"))
1842 return -EIO;
1843 break;
1844 case TPACPI_VIDEO_770:
1845 case TPACPI_VIDEO_NEW:
1846 if (!acpi_evalf(vid_handle, &autosw, "^VDEE", "d"))
1847 return -EIO;
1848 break;
1849 default:
1850 return -ENOSYS;
1851 }
78f81cc4 1852
83f34724 1853 return autosw & 1;
78f81cc4
BD		 1854}
1855
83f34724 1856static int video_autosw_set(int enable)
78f81cc4 1857{
83f34724
HMH		 1858 if (!acpi_evalf(vid_handle, NULL, "_DOS", "vd", (enable)? 1 : 0))
1859 return -EIO;
1860 return 0;
78f81cc4
BD		 1861}
1862
83f34724 1863static int video_outputsw_cycle(void)
78f81cc4 1864{
83f34724
HMH		 1865 int autosw = video_autosw_get();
1866 int res;
78f81cc4 1867
83f34724
HMH		 1868 if (autosw < 0)
1869 return autosw;
78f81cc4 1870
83f34724
HMH		 1871 switch (video_supported) {
1872 case TPACPI_VIDEO_570:
1873 res = video_autosw_set(1);
1874 if (res)
1875 return res;
1876 res = acpi_evalf(ec_handle, NULL, "_Q16", "v");
1877 break;
1878 case TPACPI_VIDEO_770:
1879 case TPACPI_VIDEO_NEW:
1880 res = video_autosw_set(1);
1881 if (res)
1882 return res;
1883 res = acpi_evalf(vid_handle, NULL, "VSWT", "v");
1884 break;
1885 default:
1886 return -ENOSYS;
1887 }
1888 if (!autosw && video_autosw_set(autosw)) {
1889 printk(IBM_ERR "video auto-switch left enabled due to error\n");
1890 return -EIO;
78f81cc4
BD		 1891 }
1892
83f34724
HMH		 1893 return (res)? 0 : -EIO;
1894}
1895
1896static int video_expand_toggle(void)
1897{
1898 switch (video_supported) {
1899 case TPACPI_VIDEO_570:
1900 return acpi_evalf(ec_handle, NULL, "_Q17", "v")?
1901 0 : -EIO;
1902 case TPACPI_VIDEO_770:
1903 return acpi_evalf(vid_handle, NULL, "VEXP", "v")?
1904 0 : -EIO;
1905 case TPACPI_VIDEO_NEW:
1906 return acpi_evalf(NULL, NULL, "\\VEXP", "v")?
1907 0 : -EIO;
1908 default:
1909 return -ENOSYS;
1910 }
1911 /* not reached */
78f81cc4
BD		 1912}
1913
56b6aeb0
HMH		 1914static int video_read(char *p)
1915{
83f34724 1916 int status, autosw;
56b6aeb0
HMH		 1917 int len = 0;
1918
83f34724 1919 if (video_supported == TPACPI_VIDEO_NONE) {
56b6aeb0
HMH		 1920 len += sprintf(p + len, "status:\t\tnot supported\n");
1921 return len;
1922 }
1923
83f34724
HMH		 1924 status = video_outputsw_get();
1925 if (status < 0)
1926 return status;
1927
1928 autosw = video_autosw_get();
1929 if (autosw < 0)
1930 return autosw;
1931
56b6aeb0
HMH		 1932 len += sprintf(p + len, "status:\t\tsupported\n");
1933 len += sprintf(p + len, "lcd:\t\t%s\n", enabled(status, 0));
1934 len += sprintf(p + len, "crt:\t\t%s\n", enabled(status, 1));
efa27145 1935 if (video_supported == TPACPI_VIDEO_NEW)
56b6aeb0
HMH		 1936 len += sprintf(p + len, "dvi:\t\t%s\n", enabled(status, 3));
1937 len += sprintf(p + len, "auto:\t\t%s\n", enabled(autosw, 0));
1938 len += sprintf(p + len, "commands:\tlcd_enable, lcd_disable\n");
1939 len += sprintf(p + len, "commands:\tcrt_enable, crt_disable\n");
efa27145 1940 if (video_supported == TPACPI_VIDEO_NEW)
56b6aeb0
HMH		 1941 len += sprintf(p + len, "commands:\tdvi_enable, dvi_disable\n");
1942 len += sprintf(p + len, "commands:\tauto_enable, auto_disable\n");
1943 len += sprintf(p + len, "commands:\tvideo_switch, expand_toggle\n");
1944
1945 return len;
1946}
1947
78f81cc4 1948static int video_write(char *buf)
1da177e4
LT		 1949{
1950 char *cmd;
1951 int enable, disable, status;
83f34724 1952 int res;
1da177e4 1953
83f34724 1954 if (video_supported == TPACPI_VIDEO_NONE)
78f81cc4
BD		 1955 return -ENODEV;
1956
83f34724
HMH		 1957 enable = 0;
1958 disable = 0;
1da177e4
LT		 1959
1960 while ((cmd = next_cmd(&buf))) {
1961 if (strlencmp(cmd, "lcd_enable") == 0) {
83f34724 1962 enable |= TP_ACPI_VIDEO_S_LCD;
1da177e4 1963 } else if (strlencmp(cmd, "lcd_disable") == 0) {
83f34724 1964 disable |= TP_ACPI_VIDEO_S_LCD;
1da177e4 1965 } else if (strlencmp(cmd, "crt_enable") == 0) {
83f34724 1966 enable |= TP_ACPI_VIDEO_S_CRT;
1da177e4 1967 } else if (strlencmp(cmd, "crt_disable") == 0) {
83f34724 1968 disable |= TP_ACPI_VIDEO_S_CRT;
efa27145 1969 } else if (video_supported == TPACPI_VIDEO_NEW &&
78f81cc4 1970 strlencmp(cmd, "dvi_enable") == 0) {
83f34724 1971 enable |= TP_ACPI_VIDEO_S_DVI;
efa27145 1972 } else if (video_supported == TPACPI_VIDEO_NEW &&
78f81cc4 1973 strlencmp(cmd, "dvi_disable") == 0) {
83f34724 1974 disable |= TP_ACPI_VIDEO_S_DVI;
1da177e4 1975 } else if (strlencmp(cmd, "auto_enable") == 0) {
83f34724
HMH		 1976 res = video_autosw_set(1);
1977 if (res)
1978 return res;
1da177e4 1979 } else if (strlencmp(cmd, "auto_disable") == 0) {
83f34724
HMH		 1980 res = video_autosw_set(0);
1981 if (res)
1982 return res;
1da177e4 1983 } else if (strlencmp(cmd, "video_switch") == 0) {
83f34724
HMH		 1984 res = video_outputsw_cycle();
1985 if (res)
1986 return res;
1da177e4 1987 } else if (strlencmp(cmd, "expand_toggle") == 0) {
83f34724
HMH		 1988 res = video_expand_toggle();
1989 if (res)
1990 return res;
1da177e4
LT		 1991 } else
1992 return -EINVAL;
1993 }
1994
1995 if (enable || disable) {
83f34724
HMH		 1996 status = video_outputsw_get();
1997 if (status < 0)
1998 return status;
1999 res = video_outputsw_set((status & ~disable) | enable);
2000 if (res)
2001 return res;
1da177e4
LT		 2002 }
2003
2004 return 0;
2005}
2006
a5763f22
HMH		 2007static struct ibm_struct video_driver_data = {
2008 .name = "video",
2009 .read = video_read,
2010 .write = video_write,
2011 .exit = video_exit,
2012};
2013
56b6aeb0
HMH		 2014/*************************************************************************
2015 * Light (thinklight) subdriver
2016 */
1da177e4 2017
56b6aeb0
HMH		 2018IBM_HANDLE(lght, root, "\\LGHT"); /* A21e, A2xm/p, T20-22, X20-21 */
2019IBM_HANDLE(ledb, ec, "LEDB"); /* G4x */
2020
a5763f22 2021static int __init light_init(struct ibm_init_struct *iibm)
1da177e4 2022{
fe08bc4b
HMH		 2023 vdbg_printk(TPACPI_DBG_INIT, "initializing light subdriver\n");
2024
8d376cd6
HMH		 2025 IBM_ACPIHANDLE_INIT(ledb);
2026 IBM_ACPIHANDLE_INIT(lght);
2027 IBM_ACPIHANDLE_INIT(cmos);
5fba344c 2028
78f81cc4 2029 /* light not supported on 570, 600e/x, 770e, 770x, G4x, R30, R31 */
d8fd94d9 2030 tp_features.light = (cmos_handle || lght_handle) && !ledb_handle;
78f81cc4 2031
d8fd94d9 2032 if (tp_features.light)
78f81cc4
BD		 2033 /* light status not supported on
2034 570, 600e/x, 770e, 770x, G4x, R30, R31, R32, X20 */
d8fd94d9
HMH		 2035 tp_features.light_status =
2036 acpi_evalf(ec_handle, NULL, "KBLT", "qv");
1da177e4 2037
fe08bc4b 2038 vdbg_printk(TPACPI_DBG_INIT, "light is %s\n",
d8fd94d9 2039 str_supported(tp_features.light));
fe08bc4b 2040
d8fd94d9 2041 return (tp_features.light)? 0 : 1;
1da177e4
LT		 2042}
2043
78f81cc4 2044static int light_read(char *p)
1da177e4
LT		 2045{
2046 int len = 0;
2047 int status = 0;
2048
d8fd94d9 2049 if (!tp_features.light) {
78f81cc4 2050 len += sprintf(p + len, "status:\t\tnot supported\n");
d8fd94d9 2051 } else if (!tp_features.light_status) {
78f81cc4
BD		 2052 len += sprintf(p + len, "status:\t\tunknown\n");
2053 len += sprintf(p + len, "commands:\ton, off\n");
2054 } else {
1da177e4
LT		 2055 if (!acpi_evalf(ec_handle, &status, "KBLT", "d"))
2056 return -EIO;
2057 len += sprintf(p + len, "status:\t\t%s\n", onoff(status, 0));
78f81cc4
BD		 2058 len += sprintf(p + len, "commands:\ton, off\n");
2059 }
1da177e4
LT		 2060
2061 return len;
2062}
2063
78f81cc4 2064static int light_write(char *buf)
1da177e4
LT		 2065{
2066 int cmos_cmd, lght_cmd;
2067 char *cmd;
2068 int success;
78f81cc4 2069
d8fd94d9 2070 if (!tp_features.light)
78f81cc4
BD		 2071 return -ENODEV;
2072
1da177e4
LT		 2073 while ((cmd = next_cmd(&buf))) {
2074 if (strlencmp(cmd, "on") == 0) {
2075 cmos_cmd = 0x0c;
2076 lght_cmd = 1;
2077 } else if (strlencmp(cmd, "off") == 0) {
2078 cmos_cmd = 0x0d;
2079 lght_cmd = 0;
2080 } else
2081 return -EINVAL;
78f81cc4 2082
1da177e4 2083 success = cmos_handle ?
78f81cc4
BD		 2084 acpi_evalf(cmos_handle, NULL, NULL, "vd", cmos_cmd) :
2085 acpi_evalf(lght_handle, NULL, NULL, "vd", lght_cmd);
1da177e4
LT		 2086 if (!success)
2087 return -EIO;
2088 }
2089
2090 return 0;
2091}
2092
a5763f22
HMH		 2093static struct ibm_struct light_driver_data = {
2094 .name = "light",
2095 .read = light_read,
2096 .write = light_write,
2097};
2098
56b6aeb0
HMH		 2099/*************************************************************************
2100 * Dock subdriver
2101 */
1da177e4 2102
85998248 2103#ifdef CONFIG_THINKPAD_ACPI_DOCK
56b6aeb0
HMH		 2104
2105IBM_HANDLE(dock, root, "\\_SB.GDCK", /* X30, X31, X40 */
2106 "\\_SB.PCI0.DOCK", /* 600e/x,770e,770x,A2xm/p,T20-22,X20-21 */
2107 "\\_SB.PCI0.PCI1.DOCK", /* all others */
2108 "\\_SB.PCI.ISA.SLCE", /* 570 */
2109 ); /* A21e,G4x,R30,R31,R32,R40,R40e,R50e */
2110
5fba344c
HMH		 2111/* don't list other alternatives as we install a notify handler on the 570 */
2112IBM_HANDLE(pci, root, "\\_SB.PCI"); /* 570 */
2113
1ba90e3a
TR		 2114static const struct acpi_device_id ibm_pci_device_ids[] = {
2115 {PCI_ROOT_HID_STRING, 0},
2116 {"", 0},
2117};
2118
d94a7f16
HMH		 2119static struct tp_acpi_drv_struct ibm_dock_acpidriver[2] = {
2120 {
2121 .notify = dock_notify,
2122 .handle = &dock_handle,
2123 .type = ACPI_SYSTEM_NOTIFY,
2124 },
2125 {
996fba08
HMH		 2126 /* THIS ONE MUST NEVER BE USED FOR DRIVER AUTOLOADING.
2127 * We just use it to get notifications of dock hotplug
2128 * in very old thinkpads */
1ba90e3a 2129 .hid = ibm_pci_device_ids,
d94a7f16
HMH		 2130 .notify = dock_notify,
2131 .handle = &pci_handle,
2132 .type = ACPI_SYSTEM_NOTIFY,
2133 },
2134};
2135
2136static struct ibm_struct dock_driver_data[2] = {
2137 {
2138 .name = "dock",
2139 .read = dock_read,
2140 .write = dock_write,
2141 .acpi = &ibm_dock_acpidriver[0],
2142 },
2143 {
2144 .name = "dock",
2145 .acpi = &ibm_dock_acpidriver[1],
2146 },
2147};
2148
1da177e4
LT		 2149#define dock_docked() (_sta(dock_handle) & 1)
2150
a5763f22 2151static int __init dock_init(struct ibm_init_struct *iibm)
5fba344c 2152{
fe08bc4b
HMH		 2153 vdbg_printk(TPACPI_DBG_INIT, "initializing dock subdriver\n");
2154
8d376cd6 2155 IBM_ACPIHANDLE_INIT(dock);
5fba344c 2156
fe08bc4b
HMH		 2157 vdbg_printk(TPACPI_DBG_INIT, "dock is %s\n",
2158 str_supported(dock_handle != NULL));
2159
5fba344c
HMH		 2160 return (dock_handle)? 0 : 1;
2161}
2162
d94a7f16
HMH		 2163static int __init dock_init2(struct ibm_init_struct *iibm)
2164{
2165 int dock2_needed;
2166
2167 vdbg_printk(TPACPI_DBG_INIT, "initializing dock subdriver part 2\n");
2168
2169 if (dock_driver_data[0].flags.acpi_driver_registered &&
2170 dock_driver_data[0].flags.acpi_notify_installed) {
2171 IBM_ACPIHANDLE_INIT(pci);
2172 dock2_needed = (pci_handle != NULL);
2173 vdbg_printk(TPACPI_DBG_INIT,
2174 "dock PCI handler for the TP 570 is %s\n",
2175 str_supported(dock2_needed));
2176 } else {
2177 vdbg_printk(TPACPI_DBG_INIT,
2178 "dock subdriver part 2 not required\n");
2179 dock2_needed = 0;
2180 }
2181
2182 return (dock2_needed)? 0 : 1;
2183}
2184
56b6aeb0
HMH		 2185static void dock_notify(struct ibm_struct *ibm, u32 event)
2186{
2187 int docked = dock_docked();
1ba90e3a
TR		 2188 int pci = ibm->acpi->hid && ibm->acpi->device &&
2189 acpi_match_device_ids(ibm->acpi->device, ibm_pci_device_ids);
962ce8ca 2190 int data;
56b6aeb0
HMH		 2191
2192 if (event == 1 && !pci) /* 570 */
962ce8ca 2193 data = 1; /* button */
56b6aeb0 2194 else if (event == 1 && pci) /* 570 */
962ce8ca 2195 data = 3; /* dock */
56b6aeb0 2196 else if (event == 3 && docked)
962ce8ca 2197 data = 1; /* button */
56b6aeb0 2198 else if (event == 3 && !docked)
962ce8ca 2199 data = 2; /* undock */
56b6aeb0 2200 else if (event == 0 && docked)
962ce8ca 2201 data = 3; /* dock */
56b6aeb0
HMH		 2202 else {
2203 printk(IBM_ERR "unknown dock event %d, status %d\n",
2204 event, _sta(dock_handle));
962ce8ca 2205 data = 0; /* unknown */
56b6aeb0 2206 }
14e04fb3 2207 acpi_bus_generate_proc_event(ibm->acpi->device, event, data);
962ce8ca
ZR		 2208 acpi_bus_generate_netlink_event(ibm->acpi->device->pnp.device_class,
2209 ibm->acpi->device->dev.bus_id,
2210 event, data);
56b6aeb0
HMH		 2211}
2212
78f81cc4 2213static int dock_read(char *p)
1da177e4
LT		 2214{
2215 int len = 0;
2216 int docked = dock_docked();
2217
2218 if (!dock_handle)
2219 len += sprintf(p + len, "status:\t\tnot supported\n");
2220 else if (!docked)
2221 len += sprintf(p + len, "status:\t\tundocked\n");
2222 else {
2223 len += sprintf(p + len, "status:\t\tdocked\n");
2224 len += sprintf(p + len, "commands:\tdock, undock\n");
2225 }
2226
2227 return len;
2228}
2229
78f81cc4 2230static int dock_write(char *buf)
1da177e4
LT		 2231{
2232 char *cmd;
2233
2234 if (!dock_docked())
78f81cc4 2235 return -ENODEV;
1da177e4
LT		 2236
2237 while ((cmd = next_cmd(&buf))) {
2238 if (strlencmp(cmd, "undock") == 0) {
78f81cc4
BD		 2239 if (!acpi_evalf(dock_handle, NULL, "_DCK", "vd", 0) ||
2240 !acpi_evalf(dock_handle, NULL, "_EJ0", "vd", 1))
56b6aeb0
HMH		 2241 return -EIO;
2242 } else if (strlencmp(cmd, "dock") == 0) {
2243 if (!acpi_evalf(dock_handle, NULL, "_DCK", "vd", 1))
2244 return -EIO;
2245 } else
2246 return -EINVAL;
1da177e4 2247 }
56b6aeb0
HMH		 2248
2249 return 0;
1da177e4 2250}
56b6aeb0 2251
85998248 2252#endif /* CONFIG_THINKPAD_ACPI_DOCK */
56b6aeb0
HMH		 2253
2254/*************************************************************************
2255 * Bay subdriver
2256 */
1da177e4 2257
85998248 2258#ifdef CONFIG_THINKPAD_ACPI_BAY
56b6aeb0
HMH		 2259IBM_HANDLE(bay, root, "\\_SB.PCI.IDE.SECN.MAST", /* 570 */
2260 "\\_SB.PCI0.IDE0.IDES.IDSM", /* 600e/x, 770e, 770x */
2261 "\\_SB.PCI0.SATA.SCND.MSTR", /* T60, X60, Z60 */
2262 "\\_SB.PCI0.IDE0.SCND.MSTR", /* all others */
2263 ); /* A21e, R30, R31 */
2264IBM_HANDLE(bay_ej, bay, "_EJ3", /* 600e/x, A2xm/p, A3x */
2265 "_EJ0", /* all others */
2266 ); /* 570,A21e,G4x,R30,R31,R32,R40e,R50e */
2267IBM_HANDLE(bay2, root, "\\_SB.PCI0.IDE0.PRIM.SLAV", /* A3x, R32 */
2268 "\\_SB.PCI0.IDE0.IDEP.IDPS", /* 600e/x, 770e, 770x */
2269 ); /* all others */
2270IBM_HANDLE(bay2_ej, bay2, "_EJ3", /* 600e/x, 770e, A3x */
2271 "_EJ0", /* 770x */
2272 ); /* all others */
2273
a5763f22 2274static int __init bay_init(struct ibm_init_struct *iibm)
1da177e4 2275{
fe08bc4b
HMH		 2276 vdbg_printk(TPACPI_DBG_INIT, "initializing bay subdriver\n");
2277
8d376cd6 2278 IBM_ACPIHANDLE_INIT(bay);
5fba344c 2279 if (bay_handle)
8d376cd6
HMH		 2280 IBM_ACPIHANDLE_INIT(bay_ej);
2281 IBM_ACPIHANDLE_INIT(bay2);
5fba344c 2282 if (bay2_handle)
8d376cd6 2283 IBM_ACPIHANDLE_INIT(bay2_ej);
5fba344c 2284
d8fd94d9
HMH		 2285 tp_features.bay_status = bay_handle &&
2286 acpi_evalf(bay_handle, NULL, "_STA", "qv");
2287 tp_features.bay_status2 = bay2_handle &&
2288 acpi_evalf(bay2_handle, NULL, "_STA", "qv");
78f81cc4 2289
d8fd94d9
HMH		 2290 tp_features.bay_eject = bay_handle && bay_ej_handle &&
2291 (strlencmp(bay_ej_path, "_EJ0") == 0 || experimental);
2292 tp_features.bay_eject2 = bay2_handle && bay2_ej_handle &&
2293 (strlencmp(bay2_ej_path, "_EJ0") == 0 || experimental);
1da177e4 2294
fe08bc4b
HMH		 2295 vdbg_printk(TPACPI_DBG_INIT,
2296 "bay 1: status %s, eject %s; bay 2: status %s, eject %s\n",
d8fd94d9
HMH		 2297 str_supported(tp_features.bay_status),
2298 str_supported(tp_features.bay_eject),
2299 str_supported(tp_features.bay_status2),
2300 str_supported(tp_features.bay_eject2));
fe08bc4b 2301
d8fd94d9
HMH		 2302 return (tp_features.bay_status || tp_features.bay_eject ||
2303 tp_features.bay_status2 || tp_features.bay_eject2)? 0 : 1;
1da177e4
LT		 2304}
2305
56b6aeb0
HMH		 2306static void bay_notify(struct ibm_struct *ibm, u32 event)
2307{
14e04fb3 2308 acpi_bus_generate_proc_event(ibm->acpi->device, event, 0);
962ce8ca
ZR		 2309 acpi_bus_generate_netlink_event(ibm->acpi->device->pnp.device_class,
2310 ibm->acpi->device->dev.bus_id,
2311 event, 0);
56b6aeb0
HMH		 2312}
2313
78f81cc4
BD		 2314#define bay_occupied(b) (_sta(b##_handle) & 1)
2315
2316static int bay_read(char *p)
1da177e4
LT		 2317{
2318 int len = 0;
78f81cc4
BD		 2319 int occupied = bay_occupied(bay);
2320 int occupied2 = bay_occupied(bay2);
2321 int eject, eject2;
2322
d8fd94d9
HMH		 2323 len += sprintf(p + len, "status:\t\t%s\n",
2324 tp_features.bay_status ?
2325 (occupied ? "occupied" : "unoccupied") :
2326 "not supported");
2327 if (tp_features.bay_status2)
78f81cc4
BD		 2328 len += sprintf(p + len, "status2:\t%s\n", occupied2 ?
2329 "occupied" : "unoccupied");
2330
d8fd94d9
HMH		 2331 eject = tp_features.bay_eject && occupied;
2332 eject2 = tp_features.bay_eject2 && occupied2;
78f81cc4
BD		 2333
2334 if (eject && eject2)
2335 len += sprintf(p + len, "commands:\teject, eject2\n");
2336 else if (eject)
1da177e4 2337 len += sprintf(p + len, "commands:\teject\n");
78f81cc4
BD		 2338 else if (eject2)
2339 len += sprintf(p + len, "commands:\teject2\n");
1da177e4
LT		 2340
2341 return len;
2342}
2343
78f81cc4 2344static int bay_write(char *buf)
1da177e4
LT		 2345{
2346 char *cmd;
2347
d8fd94d9 2348 if (!tp_features.bay_eject && !tp_features.bay_eject2)
78f81cc4
BD		 2349 return -ENODEV;
2350
1da177e4 2351 while ((cmd = next_cmd(&buf))) {
d8fd94d9 2352 if (tp_features.bay_eject && strlencmp(cmd, "eject") == 0) {
78f81cc4
BD		 2353 if (!acpi_evalf(bay_ej_handle, NULL, NULL, "vd", 1))
2354 return -EIO;
d8fd94d9 2355 } else if (tp_features.bay_eject2 &&
78f81cc4
BD		 2356 strlencmp(cmd, "eject2") == 0) {
2357 if (!acpi_evalf(bay2_ej_handle, NULL, NULL, "vd", 1))
1da177e4
LT		 2358 return -EIO;
2359 } else
2360 return -EINVAL;
2361 }
2362
2363 return 0;
78f81cc4 2364}
a5763f22 2365
8d376cd6
HMH		 2366static struct tp_acpi_drv_struct ibm_bay_acpidriver = {
2367 .notify = bay_notify,
2368 .handle = &bay_handle,
2369 .type = ACPI_SYSTEM_NOTIFY,
2370};
2371
a5763f22
HMH		 2372static struct ibm_struct bay_driver_data = {
2373 .name = "bay",
2374 .read = bay_read,
2375 .write = bay_write,
8d376cd6 2376 .acpi = &ibm_bay_acpidriver,
a5763f22
HMH		 2377};
2378
85998248 2379#endif /* CONFIG_THINKPAD_ACPI_BAY */
1da177e4 2380
56b6aeb0
HMH		 2381/*************************************************************************
2382 * CMOS subdriver
2383 */
2384
b616004c
HMH		 2385/* sysfs cmos_command -------------------------------------------------- */
2386static ssize_t cmos_command_store(struct device *dev,
2387 struct device_attribute *attr,
2388 const char *buf, size_t count)
2389{
2390 unsigned long cmos_cmd;
2391 int res;
2392
2393 if (parse_strtoul(buf, 21, &cmos_cmd))
2394 return -EINVAL;
2395
2396 res = issue_thinkpad_cmos_command(cmos_cmd);
2397 return (res)? res : count;
2398}
2399
2400static struct device_attribute dev_attr_cmos_command =
2401 __ATTR(cmos_command, S_IWUSR, NULL, cmos_command_store);
2402
2403/* --------------------------------------------------------------------- */
2404
a5763f22 2405static int __init cmos_init(struct ibm_init_struct *iibm)
5fba344c 2406{
b616004c
HMH		 2407 int res;
2408
fe08bc4b
HMH		 2409 vdbg_printk(TPACPI_DBG_INIT,
2410 "initializing cmos commands subdriver\n");
2411
8d376cd6 2412 IBM_ACPIHANDLE_INIT(cmos);
5fba344c 2413
fe08bc4b
HMH		 2414 vdbg_printk(TPACPI_DBG_INIT, "cmos commands are %s\n",
2415 str_supported(cmos_handle != NULL));
b616004c
HMH		 2416
2417 res = device_create_file(&tpacpi_pdev->dev, &dev_attr_cmos_command);
2418 if (res)
2419 return res;
2420
5fba344c
HMH		 2421 return (cmos_handle)? 0 : 1;
2422}
2423
b616004c
HMH		 2424static void cmos_exit(void)
2425{
2426 device_remove_file(&tpacpi_pdev->dev, &dev_attr_cmos_command);
2427}
2428
78f81cc4 2429static int cmos_read(char *p)
1da177e4
LT		 2430{
2431 int len = 0;
2432
78f81cc4
BD		 2433 /* cmos not supported on 570, 600e/x, 770e, 770x, A21e, A2xm/p,
2434 R30, R31, T20-22, X20-21 */
1da177e4
LT		 2435 if (!cmos_handle)
2436 len += sprintf(p + len, "status:\t\tnot supported\n");
2437 else {
2438 len += sprintf(p + len, "status:\t\tsupported\n");
78f81cc4 2439 len += sprintf(p + len, "commands:\t<cmd> (<cmd> is 0-21)\n");
1da177e4
LT		 2440 }
2441
2442 return len;
2443}
2444
78f81cc4 2445static int cmos_write(char *buf)
1da177e4
LT		 2446{
2447 char *cmd;
c9bea99c 2448 int cmos_cmd, res;
1da177e4
LT		 2449
2450 while ((cmd = next_cmd(&buf))) {
78f81cc4
BD		 2451 if (sscanf(cmd, "%u", &cmos_cmd) == 1 &&
2452 cmos_cmd >= 0 && cmos_cmd <= 21) {
1da177e4
LT		 2453 /* cmos_cmd set */
2454 } else
2455 return -EINVAL;
2456
c9bea99c
HMH		 2457 res = issue_thinkpad_cmos_command(cmos_cmd);
2458 if (res)
2459 return res;
1da177e4
LT		 2460 }
2461
2462 return 0;
78f81cc4
BD		 2463}
2464
a5763f22
HMH		 2465static struct ibm_struct cmos_driver_data = {
2466 .name = "cmos",
2467 .read = cmos_read,
2468 .write = cmos_write,
b616004c 2469 .exit = cmos_exit,
a5763f22 2470};
56b6aeb0
HMH		 2471
2472/*************************************************************************
2473 * LED subdriver
2474 */
2475
9a8e1738 2476static enum led_access_mode led_supported;
78f81cc4 2477
56b6aeb0
HMH		 2478IBM_HANDLE(led, ec, "SLED", /* 570 */
2479 "SYSL", /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20-21 */
2480 "LED", /* all others */
2481 ); /* R30, R31 */
2482
a5763f22 2483static int __init led_init(struct ibm_init_struct *iibm)
78f81cc4 2484{
fe08bc4b
HMH		 2485 vdbg_printk(TPACPI_DBG_INIT, "initializing LED subdriver\n");
2486
8d376cd6 2487 IBM_ACPIHANDLE_INIT(led);
5fba344c 2488
78f81cc4
BD		 2489 if (!led_handle)
2490 /* led not supported on R30, R31 */
efa27145 2491 led_supported = TPACPI_LED_NONE;
78f81cc4
BD		 2492 else if (strlencmp(led_path, "SLED") == 0)
2493 /* 570 */
efa27145 2494 led_supported = TPACPI_LED_570;
78f81cc4
BD		 2495 else if (strlencmp(led_path, "SYSL") == 0)
2496 /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20-21 */
efa27145 2497 led_supported = TPACPI_LED_OLD;
78f81cc4
BD		 2498 else
2499 /* all others */
efa27145 2500 led_supported = TPACPI_LED_NEW;
78f81cc4 2501
fe08bc4b
HMH		 2502 vdbg_printk(TPACPI_DBG_INIT, "LED commands are %s, mode %d\n",
2503 str_supported(led_supported), led_supported);
2504
5fba344c 2505 return (led_supported != TPACPI_LED_NONE)? 0 : 1;
78f81cc4
BD		 2506}
2507
2508#define led_status(s) ((s) == 0 ? "off" : ((s) == 1 ? "on" : "blinking"))
2509
2510static int led_read(char *p)
1da177e4
LT		 2511{
2512 int len = 0;
2513
78f81cc4
BD		 2514 if (!led_supported) {
2515 len += sprintf(p + len, "status:\t\tnot supported\n");
2516 return len;
2517 }
2518 len += sprintf(p + len, "status:\t\tsupported\n");
2519
efa27145 2520 if (led_supported == TPACPI_LED_570) {
78f81cc4
BD		 2521 /* 570 */
2522 int i, status;
2523 for (i = 0; i < 8; i++) {
2524 if (!acpi_evalf(ec_handle,
2525 &status, "GLED", "dd", 1 << i))
2526 return -EIO;
2527 len += sprintf(p + len, "%d:\t\t%s\n",
2528 i, led_status(status));
2529 }
2530 }
2531
1da177e4 2532 len += sprintf(p + len, "commands:\t"
78f81cc4 2533 "<led> on, <led> off, <led> blink (<led> is 0-7)\n");
1da177e4
LT		 2534
2535 return len;
2536}
2537
78f81cc4
BD		 2538/* off, on, blink */
2539static const int led_sled_arg1[] = { 0, 1, 3 };
2540static const int led_exp_hlbl[] = { 0, 0, 1 }; /* led# * */
2541static const int led_exp_hlcl[] = { 0, 1, 1 }; /* led# * */
2542static const int led_led_arg1[] = { 0, 0x80, 0xc0 };
2543
78f81cc4 2544static int led_write(char *buf)
1da177e4
LT		 2545{
2546 char *cmd;
78f81cc4
BD		 2547 int led, ind, ret;
2548
2549 if (!led_supported)
2550 return -ENODEV;
1da177e4
LT		 2551
2552 while ((cmd = next_cmd(&buf))) {
78f81cc4 2553 if (sscanf(cmd, "%d", &led) != 1 || led < 0 || led > 7)
1da177e4
LT		 2554 return -EINVAL;
2555
78f81cc4
BD		 2556 if (strstr(cmd, "off")) {
2557 ind = 0;
1da177e4 2558 } else if (strstr(cmd, "on")) {
78f81cc4
BD		 2559 ind = 1;
2560 } else if (strstr(cmd, "blink")) {
2561 ind = 2;
1da177e4
LT		 2562 } else
2563 return -EINVAL;
78f81cc4 2564
efa27145 2565 if (led_supported == TPACPI_LED_570) {
78f81cc4
BD		 2566 /* 570 */
2567 led = 1 << led;
1da177e4 2568 if (!acpi_evalf(led_handle, NULL, NULL, "vdd",
78f81cc4 2569 led, led_sled_arg1[ind]))
1da177e4 2570 return -EIO;
efa27145 2571 } else if (led_supported == TPACPI_LED_OLD) {
78f81cc4
BD		 2572 /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20 */
2573 led = 1 << led;
efa27145 2574 ret = ec_write(TPACPI_LED_EC_HLMS, led);
78f81cc4
BD		 2575 if (ret >= 0)
2576 ret =
efa27145 2577 ec_write(TPACPI_LED_EC_HLBL,
e062e034 2578 led * led_exp_hlbl[ind]);
78f81cc4
BD		 2579 if (ret >= 0)
2580 ret =
efa27145 2581 ec_write(TPACPI_LED_EC_HLCL,
e062e034 2582 led * led_exp_hlcl[ind]);
78f81cc4
BD		 2583 if (ret < 0)
2584 return ret;
2585 } else {
2586 /* all others */
2587 if (!acpi_evalf(led_handle, NULL, NULL, "vdd",
2588 led, led_led_arg1[ind]))
1da177e4 2589 return -EIO;
78f81cc4
BD		 2590 }
2591 }
2592
2593 return 0;
2594}
2595
a5763f22
HMH		 2596static struct ibm_struct led_driver_data = {
2597 .name = "led",
2598 .read = led_read,
2599 .write = led_write,
2600};
2601
56b6aeb0
HMH		 2602/*************************************************************************
2603 * Beep subdriver
2604 */
2605
2606IBM_HANDLE(beep, ec, "BEEP"); /* all except R30, R31 */
2607
a5763f22 2608static int __init beep_init(struct ibm_init_struct *iibm)
5fba344c 2609{
fe08bc4b
HMH		 2610 vdbg_printk(TPACPI_DBG_INIT, "initializing beep subdriver\n");
2611
8d376cd6 2612 IBM_ACPIHANDLE_INIT(beep);
5fba344c 2613
fe08bc4b
HMH		 2614 vdbg_printk(TPACPI_DBG_INIT, "beep is %s\n",
2615 str_supported(beep_handle != NULL));
2616
5fba344c
HMH		 2617 return (beep_handle)? 0 : 1;
2618}
2619
78f81cc4
BD		 2620static int beep_read(char *p)
2621{
2622 int len = 0;
2623
2624 if (!beep_handle)
2625 len += sprintf(p + len, "status:\t\tnot supported\n");
2626 else {
2627 len += sprintf(p + len, "status:\t\tsupported\n");
2628 len += sprintf(p + len, "commands:\t<cmd> (<cmd> is 0-17)\n");
2629 }
2630
2631 return len;
2632}
2633
2634static int beep_write(char *buf)
2635{
2636 char *cmd;
2637 int beep_cmd;
2638
2639 if (!beep_handle)
2640 return -ENODEV;
2641
2642 while ((cmd = next_cmd(&buf))) {
2643 if (sscanf(cmd, "%u", &beep_cmd) == 1 &&
2644 beep_cmd >= 0 && beep_cmd <= 17) {
2645 /* beep_cmd set */
2646 } else
2647 return -EINVAL;
2648 if (!acpi_evalf(beep_handle, NULL, NULL, "vdd", beep_cmd, 0))
2649 return -EIO;
2650 }
2651
2652 return 0;
2653}
2654
a5763f22
HMH		 2655static struct ibm_struct beep_driver_data = {
2656 .name = "beep",
2657 .read = beep_read,
2658 .write = beep_write,
2659};
2660
56b6aeb0
HMH		 2661/*************************************************************************
2662 * Thermal subdriver
2663 */
78f81cc4 2664
a26f878a 2665static enum thermal_access_mode thermal_read_mode;
78f81cc4 2666
2c37aa4e
HMH		 2667/* sysfs temp##_input -------------------------------------------------- */
2668
2669static ssize_t thermal_temp_input_show(struct device *dev,
2670 struct device_attribute *attr,
2671 char *buf)
2672{
2673 struct sensor_device_attribute *sensor_attr =
2674 to_sensor_dev_attr(attr);
2675 int idx = sensor_attr->index;
2676 s32 value;
2677 int res;
2678
2679 res = thermal_get_sensor(idx, &value);
2680 if (res)
2681 return res;
2682 if (value == TP_EC_THERMAL_TMP_NA * 1000)
2683 return -ENXIO;
2684
2685 return snprintf(buf, PAGE_SIZE, "%d\n", value);
2686}
2687
2688#define THERMAL_SENSOR_ATTR_TEMP(_idxA, _idxB) \
2689 SENSOR_ATTR(temp##_idxA##_input, S_IRUGO, thermal_temp_input_show, NULL, _idxB)
2690
2691static struct sensor_device_attribute sensor_dev_attr_thermal_temp_input[] = {
2692 THERMAL_SENSOR_ATTR_TEMP(1, 0),
2693 THERMAL_SENSOR_ATTR_TEMP(2, 1),
2694 THERMAL_SENSOR_ATTR_TEMP(3, 2),
2695 THERMAL_SENSOR_ATTR_TEMP(4, 3),
2696 THERMAL_SENSOR_ATTR_TEMP(5, 4),
2697 THERMAL_SENSOR_ATTR_TEMP(6, 5),
2698 THERMAL_SENSOR_ATTR_TEMP(7, 6),
2699 THERMAL_SENSOR_ATTR_TEMP(8, 7),
2700 THERMAL_SENSOR_ATTR_TEMP(9, 8),
2701 THERMAL_SENSOR_ATTR_TEMP(10, 9),
2702 THERMAL_SENSOR_ATTR_TEMP(11, 10),
2703 THERMAL_SENSOR_ATTR_TEMP(12, 11),
2704 THERMAL_SENSOR_ATTR_TEMP(13, 12),
2705 THERMAL_SENSOR_ATTR_TEMP(14, 13),
2706 THERMAL_SENSOR_ATTR_TEMP(15, 14),
2707 THERMAL_SENSOR_ATTR_TEMP(16, 15),
2708};
2709
2710#define THERMAL_ATTRS(X) \
2711 &sensor_dev_attr_thermal_temp_input[X].dev_attr.attr
2712
2713static struct attribute *thermal_temp_input_attr[] = {
2714 THERMAL_ATTRS(8),
2715 THERMAL_ATTRS(9),
2716 THERMAL_ATTRS(10),
2717 THERMAL_ATTRS(11),
2718 THERMAL_ATTRS(12),
2719 THERMAL_ATTRS(13),
2720 THERMAL_ATTRS(14),
2721 THERMAL_ATTRS(15),
2722 THERMAL_ATTRS(0),
2723 THERMAL_ATTRS(1),
2724 THERMAL_ATTRS(2),
2725 THERMAL_ATTRS(3),
2726 THERMAL_ATTRS(4),
2727 THERMAL_ATTRS(5),
2728 THERMAL_ATTRS(6),
2729 THERMAL_ATTRS(7),
2730 NULL
2731};
2732
2733static const struct attribute_group thermal_temp_input16_group = {
2734 .attrs = thermal_temp_input_attr
2735};
2736
2737static const struct attribute_group thermal_temp_input8_group = {
2738 .attrs = &thermal_temp_input_attr[8]
2739};
2740
2741#undef THERMAL_SENSOR_ATTR_TEMP
2742#undef THERMAL_ATTRS
2743
2744/* --------------------------------------------------------------------- */
2745
a5763f22 2746static int __init thermal_init(struct ibm_init_struct *iibm)
78f81cc4 2747{
60eb0b35
HMH		 2748 u8 t, ta1, ta2;
2749 int i;
5fba344c 2750 int acpi_tmp7;
2c37aa4e 2751 int res;
5fba344c 2752
fe08bc4b
HMH		 2753 vdbg_printk(TPACPI_DBG_INIT, "initializing thermal subdriver\n");
2754
5fba344c 2755 acpi_tmp7 = acpi_evalf(ec_handle, NULL, "TMP7", "qv");
60eb0b35 2756
3d6f99ca 2757 if (thinkpad_id.ec_model) {
60eb0b35
HMH		 2758 /*
2759 * Direct EC access mode: sensors at registers
2760 * 0x78-0x7F, 0xC0-0xC7. Registers return 0x00 for
2761 * non-implemented, thermal sensors return 0x80 when
2762 * not available
2763 */
78f81cc4 2764
60eb0b35
HMH		 2765 ta1 = ta2 = 0;
2766 for (i = 0; i < 8; i++) {
04cc862c 2767 if (acpi_ec_read(TP_EC_THERMAL_TMP0 + i, &t)) {
60eb0b35
HMH		 2768 ta1 |= t;
2769 } else {
2770 ta1 = 0;
2771 break;
2772 }
04cc862c 2773 if (acpi_ec_read(TP_EC_THERMAL_TMP8 + i, &t)) {
60eb0b35
HMH		 2774 ta2 |= t;
2775 } else {
2776 ta1 = 0;
2777 break;
2778 }
2779 }
2780 if (ta1 == 0) {
2781 /* This is sheer paranoia, but we handle it anyway */
2782 if (acpi_tmp7) {
2783 printk(IBM_ERR
2784 "ThinkPad ACPI EC access misbehaving, "
2785 "falling back to ACPI TMPx access mode\n");
efa27145 2786 thermal_read_mode = TPACPI_THERMAL_ACPI_TMP07;
60eb0b35
HMH		 2787 } else {
2788 printk(IBM_ERR
2789 "ThinkPad ACPI EC access misbehaving, "
2790 "disabling thermal sensors access\n");
efa27145 2791 thermal_read_mode = TPACPI_THERMAL_NONE;
60eb0b35
HMH		 2792 }
2793 } else {
2794 thermal_read_mode =
2795 (ta2 != 0) ?
efa27145 2796 TPACPI_THERMAL_TPEC_16 : TPACPI_THERMAL_TPEC_8;
60eb0b35
HMH		 2797 }
2798 } else if (acpi_tmp7) {
a26f878a
HMH		 2799 if (acpi_evalf(ec_handle, NULL, "UPDT", "qv")) {
2800 /* 600e/x, 770e, 770x */
efa27145 2801 thermal_read_mode = TPACPI_THERMAL_ACPI_UPDT;
a26f878a
HMH		 2802 } else {
2803 /* Standard ACPI TMPx access, max 8 sensors */
efa27145 2804 thermal_read_mode = TPACPI_THERMAL_ACPI_TMP07;
a26f878a
HMH		 2805 }
2806 } else {
2807 /* temperatures not supported on 570, G4x, R30, R31, R32 */
efa27145 2808 thermal_read_mode = TPACPI_THERMAL_NONE;
a26f878a 2809 }
78f81cc4 2810
fe08bc4b
HMH		 2811 vdbg_printk(TPACPI_DBG_INIT, "thermal is %s, mode %d\n",
2812 str_supported(thermal_read_mode != TPACPI_THERMAL_NONE),
2813 thermal_read_mode);
2814
2c37aa4e
HMH		 2815 switch(thermal_read_mode) {
2816 case TPACPI_THERMAL_TPEC_16:
2817 res = sysfs_create_group(&tpacpi_pdev->dev.kobj,
2818 &thermal_temp_input16_group);
2819 if (res)
2820 return res;
2821 break;
2822 case TPACPI_THERMAL_TPEC_8:
2823 case TPACPI_THERMAL_ACPI_TMP07:
2824 case TPACPI_THERMAL_ACPI_UPDT:
2825 res = sysfs_create_group(&tpacpi_pdev->dev.kobj,
2826 &thermal_temp_input8_group);
2827 if (res)
2828 return res;
2829 break;
2830 case TPACPI_THERMAL_NONE:
2831 default:
2832 return 1;
2833 }
2834
2835 return 0;
2836}
2837
2838static void thermal_exit(void)
2839{
2840 switch(thermal_read_mode) {
2841 case TPACPI_THERMAL_TPEC_16:
2842 sysfs_remove_group(&tpacpi_pdev->dev.kobj,
2843 &thermal_temp_input16_group);
2844 break;
2845 case TPACPI_THERMAL_TPEC_8:
2846 case TPACPI_THERMAL_ACPI_TMP07:
2847 case TPACPI_THERMAL_ACPI_UPDT:
2848 sysfs_remove_group(&tpacpi_pdev->dev.kobj,
2849 &thermal_temp_input16_group);
2850 break;
2851 case TPACPI_THERMAL_NONE:
2852 default:
2853 break;
2854 }
78f81cc4
BD		 2855}
2856
04cc862c
HMH		 2857/* idx is zero-based */
2858static int thermal_get_sensor(int idx, s32 *value)
78f81cc4 2859{
04cc862c 2860 int t;
60eb0b35 2861 s8 tmp;
04cc862c 2862 char tmpi[5];
78f81cc4 2863
04cc862c 2864 t = TP_EC_THERMAL_TMP0;
78f81cc4 2865
a26f878a 2866 switch (thermal_read_mode) {
efa27145
HMH		 2867#if TPACPI_MAX_THERMAL_SENSORS >= 16
2868 case TPACPI_THERMAL_TPEC_16:
04cc862c
HMH		 2869 if (idx >= 8 && idx <= 15) {
2870 t = TP_EC_THERMAL_TMP8;
2871 idx -= 8;
60eb0b35
HMH		 2872 }
2873 /* fallthrough */
2874#endif
efa27145 2875 case TPACPI_THERMAL_TPEC_8:
04cc862c
HMH		 2876 if (idx <= 7) {
2877 if (!acpi_ec_read(t + idx, &tmp))
78f81cc4 2878 return -EIO;
04cc862c
HMH		 2879 *value = tmp * 1000;
2880 return 0;
60eb0b35 2881 }
04cc862c 2882 break;
78f81cc4 2883
efa27145 2884 case TPACPI_THERMAL_ACPI_UPDT:
04cc862c
HMH		 2885 if (idx <= 7) {
2886 snprintf(tmpi, sizeof(tmpi), "TMP%c", '0' + idx);
2887 if (!acpi_evalf(ec_handle, NULL, "UPDT", "v"))
2888 return -EIO;
78f81cc4
BD		 2889 if (!acpi_evalf(ec_handle, &t, tmpi, "d"))
2890 return -EIO;
04cc862c
HMH		 2891 *value = (t - 2732) * 100;
2892 return 0;
78f81cc4 2893 }
04cc862c 2894 break;
78f81cc4 2895
efa27145 2896 case TPACPI_THERMAL_ACPI_TMP07:
04cc862c
HMH		 2897 if (idx <= 7) {
2898 snprintf(tmpi, sizeof(tmpi), "TMP%c", '0' + idx);
78f81cc4
BD		 2899 if (!acpi_evalf(ec_handle, &t, tmpi, "d"))
2900 return -EIO;
a8fba3da
HMH		 2901 if (t > 127 || t < -127)
2902 t = TP_EC_THERMAL_TMP_NA;
04cc862c
HMH		 2903 *value = t * 1000;
2904 return 0;
78f81cc4 2905 }
04cc862c 2906 break;
78f81cc4 2907
efa27145 2908 case TPACPI_THERMAL_NONE:
a26f878a 2909 default:
04cc862c
HMH		 2910 return -ENOSYS;
2911 }
2912
2913 return -EINVAL;
2914}
2915
2916static int thermal_get_sensors(struct ibm_thermal_sensors_struct *s)
2917{
2918 int res, i;
2919 int n;
2920
2921 n = 8;
2922 i = 0;
2923
2924 if (!s)
2925 return -EINVAL;
2926
2927 if (thermal_read_mode == TPACPI_THERMAL_TPEC_16)
2928 n = 16;
2929
2930 for(i = 0 ; i < n; i++) {
2931 res = thermal_get_sensor(i, &s->temp[i]);
2932 if (res)
2933 return res;
78f81cc4 2934 }
04cc862c
HMH		 2935
2936 return n;
a26f878a
HMH		 2937}
2938
2939static int thermal_read(char *p)
2940{
2941 int len = 0;
2942 int n, i;
2943 struct ibm_thermal_sensors_struct t;
2944
2945 n = thermal_get_sensors(&t);
2946 if (unlikely(n < 0))
2947 return n;
2948
2949 len += sprintf(p + len, "temperatures:\t");
2950
2951 if (n > 0) {
2952 for (i = 0; i < (n - 1); i++)
2953 len += sprintf(p + len, "%d ", t.temp[i] / 1000);
2954 len += sprintf(p + len, "%d\n", t.temp[i] / 1000);
2955 } else
2956 len += sprintf(p + len, "not supported\n");
78f81cc4
BD		 2957
2958 return len;
2959}
2960
a5763f22
HMH		 2961static struct ibm_struct thermal_driver_data = {
2962 .name = "thermal",
2963 .read = thermal_read,
2c37aa4e 2964 .exit = thermal_exit,
a5763f22
HMH		 2965};
2966
56b6aeb0
HMH		 2967/*************************************************************************
2968 * EC Dump subdriver
2969 */
2970
78f81cc4
BD		 2971static u8 ecdump_regs[256];
2972
2973static int ecdump_read(char *p)
2974{
2975 int len = 0;
2976 int i, j;
2977 u8 v;
2978
2979 len += sprintf(p + len, "EC "
2980 " +00 +01 +02 +03 +04 +05 +06 +07"
2981 " +08 +09 +0a +0b +0c +0d +0e +0f\n");
2982 for (i = 0; i < 256; i += 16) {
2983 len += sprintf(p + len, "EC 0x%02x:", i);
2984 for (j = 0; j < 16; j++) {
2985 if (!acpi_ec_read(i + j, &v))
2986 break;
2987 if (v != ecdump_regs[i + j])
2988 len += sprintf(p + len, " *%02x", v);
2989 else
2990 len += sprintf(p + len, " %02x", v);
2991 ecdump_regs[i + j] = v;
2992 }
2993 len += sprintf(p + len, "\n");
2994 if (j != 16)
2995 break;
2996 }
2997
2998 /* These are way too dangerous to advertise openly... */
2999#if 0
3000 len += sprintf(p + len, "commands:\t0x<offset> 0x<value>"
3001 " (<offset> is 00-ff, <value> is 00-ff)\n");
3002 len += sprintf(p + len, "commands:\t0x<offset> <value> "
3003 " (<offset> is 00-ff, <value> is 0-255)\n");
3004#endif
3005 return len;
3006}
3007
3008static int ecdump_write(char *buf)
3009{
3010 char *cmd;
3011 int i, v;
3012
3013 while ((cmd = next_cmd(&buf))) {
3014 if (sscanf(cmd, "0x%x 0x%x", &i, &v) == 2) {
3015 /* i and v set */
3016 } else if (sscanf(cmd, "0x%x %u", &i, &v) == 2) {
3017 /* i and v set */
3018 } else
3019 return -EINVAL;
3020 if (i >= 0 && i < 256 && v >= 0 && v < 256) {
3021 if (!acpi_ec_write(i, v))
1da177e4
LT		 3022 return -EIO;
3023 } else
3024 return -EINVAL;
3025 }
3026
3027 return 0;
78f81cc4
BD		 3028}
3029
a5763f22
HMH		 3030static struct ibm_struct ecdump_driver_data = {
3031 .name = "ecdump",
3032 .read = ecdump_read,
3033 .write = ecdump_write,
92641177 3034 .flags.experimental = 1,
a5763f22
HMH		 3035};
3036
56b6aeb0
HMH		 3037/*************************************************************************
3038 * Backlight/brightness subdriver
3039 */
3040
94954cc6 3041static struct backlight_device *ibm_backlight_device;
56b6aeb0
HMH		 3042
3043static struct backlight_ops ibm_backlight_data = {
3044 .get_brightness = brightness_get,
3045 .update_status = brightness_update_status,
3046};
3047
f432255e
HMH		 3048static struct mutex brightness_mutex;
3049
a5763f22 3050static int __init brightness_init(struct ibm_init_struct *iibm)
56b6aeb0
HMH		 3051{
3052 int b;
3053
fe08bc4b
HMH		 3054 vdbg_printk(TPACPI_DBG_INIT, "initializing brightness subdriver\n");
3055
f432255e
HMH		 3056 mutex_init(&brightness_mutex);
3057
24d3b774
HMH		 3058 if (!brightness_mode) {
3059 if (thinkpad_id.vendor == PCI_VENDOR_ID_LENOVO)
3060 brightness_mode = 2;
3061 else
3062 brightness_mode = 3;
3063
3064 dbg_printk(TPACPI_DBG_INIT, "selected brightness_mode=%d\n",
3065 brightness_mode);
3066 }
3067
3068 if (brightness_mode > 3)
3069 return -EINVAL;
3070
56b6aeb0
HMH		 3071 b = brightness_get(NULL);
3072 if (b < 0)
24d3b774 3073 return 1;
56b6aeb0 3074
7d5a015e
HMH		 3075 ibm_backlight_device = backlight_device_register(
3076 TPACPI_BACKLIGHT_DEV_NAME, NULL, NULL,
3077 &ibm_backlight_data);
56b6aeb0
HMH		 3078 if (IS_ERR(ibm_backlight_device)) {
3079 printk(IBM_ERR "Could not register backlight device\n");
3080 return PTR_ERR(ibm_backlight_device);
3081 }
fe08bc4b 3082 vdbg_printk(TPACPI_DBG_INIT, "brightness is supported\n");
56b6aeb0
HMH		 3083
3084 ibm_backlight_device->props.max_brightness = 7;
3085 ibm_backlight_device->props.brightness = b;
3086 backlight_update_status(ibm_backlight_device);
3087
3088 return 0;
3089}
3090
3091static void brightness_exit(void)
3092{
3093 if (ibm_backlight_device) {
fe08bc4b
HMH		 3094 vdbg_printk(TPACPI_DBG_EXIT,
3095 "calling backlight_device_unregister()\n");
56b6aeb0
HMH		 3096 backlight_device_unregister(ibm_backlight_device);
3097 ibm_backlight_device = NULL;
3098 }
3099}
3100
3101static int brightness_update_status(struct backlight_device *bd)
3102{
3103 return brightness_set(
3104 (bd->props.fb_blank == FB_BLANK_UNBLANK &&
3105 bd->props.power == FB_BLANK_UNBLANK) ?
3106 bd->props.brightness : 0);
3107}
3108
24d3b774
HMH		 3109/*
3110 * ThinkPads can read brightness from two places: EC 0x31, or
3111 * CMOS NVRAM byte 0x5E, bits 0-3.
3112 */
8acb0250
HM		 3113static int brightness_get(struct backlight_device *bd)
3114{
24d3b774 3115 u8 lec = 0, lcmos = 0, level = 0;
8acb0250 3116
24d3b774
HMH		 3117 if (brightness_mode & 1) {
3118 if (!acpi_ec_read(brightness_offset, &lec))
3119 return -EIO;
3120 lec &= 7;
3121 level = lec;
3122 };
3123 if (brightness_mode & 2) {
3124 lcmos = (nvram_read_byte(TP_NVRAM_ADDR_BRIGHTNESS)
3125 & TP_NVRAM_MASK_LEVEL_BRIGHTNESS)
3126 >> TP_NVRAM_POS_LEVEL_BRIGHTNESS;
3127 level = lcmos;
3128 }
3129
3130 if (brightness_mode == 3 && lec != lcmos) {
3131 printk(IBM_ERR
3132 "CMOS NVRAM (%u) and EC (%u) do not agree "
3133 "on display brightness level\n",
3134 (unsigned int) lcmos,
3135 (unsigned int) lec);
3136 return -EIO;
3137 }
fb87a811 3138
8d297264 3139 return level;
8acb0250
HM		 3140}
3141
8acb0250 3142static int brightness_set(int value)
1da177e4 3143{
f432255e
HMH		 3144 int cmos_cmd, inc, i, res;
3145 int current_value;
8acb0250 3146
24d3b774
HMH		 3147 if (value > 7)
3148 return -EINVAL;
8acb0250 3149
f432255e
HMH		 3150 res = mutex_lock_interruptible(&brightness_mutex);
3151 if (res < 0)
3152 return res;
3153
3154 current_value = brightness_get(NULL);
3155 if (current_value < 0) {
3156 res = current_value;
3157 goto errout;
3158 }
3159
24d3b774
HMH		 3160 cmos_cmd = value > current_value ?
3161 TP_CMOS_BRIGHTNESS_UP :
3162 TP_CMOS_BRIGHTNESS_DOWN;
8acb0250 3163 inc = value > current_value ? 1 : -1;
24d3b774 3164
f432255e 3165 res = 0;
8acb0250 3166 for (i = current_value; i != value; i += inc) {
24d3b774 3167 if ((brightness_mode & 2) &&
f432255e
HMH		 3168 issue_thinkpad_cmos_command(cmos_cmd)) {
3169 res = -EIO;
3170 goto errout;
3171 }
24d3b774 3172 if ((brightness_mode & 1) &&
f432255e
HMH		 3173 !acpi_ec_write(brightness_offset, i + inc)) {
3174 res = -EIO;
3175 goto errout;;
3176 }
8acb0250
HM		 3177 }
3178
f432255e
HMH		 3179errout:
3180 mutex_unlock(&brightness_mutex);
3181 return res;
8acb0250
HM		 3182}
3183
56b6aeb0
HMH		 3184static int brightness_read(char *p)
3185{
3186 int len = 0;
3187 int level;
3188
3189 if ((level = brightness_get(NULL)) < 0) {
3190 len += sprintf(p + len, "level:\t\tunreadable\n");
3191 } else {
3192 len += sprintf(p + len, "level:\t\t%d\n", level & 0x7);
3193 len += sprintf(p + len, "commands:\tup, down\n");
3194 len += sprintf(p + len, "commands:\tlevel <level>"
3195 " (<level> is 0-7)\n");
3196 }
3197
3198 return len;
3199}
3200
8acb0250
HM		 3201static int brightness_write(char *buf)
3202{
3203 int level;
78f81cc4 3204 int new_level;
1da177e4 3205 char *cmd;
1da177e4
LT		 3206
3207 while ((cmd = next_cmd(&buf))) {
8acb0250
HM		 3208 if ((level = brightness_get(NULL)) < 0)
3209 return level;
78f81cc4
BD		 3210 level &= 7;
3211
3212 if (strlencmp(cmd, "up") == 0) {
3213 new_level = level == 7 ? 7 : level + 1;
3214 } else if (strlencmp(cmd, "down") == 0) {
3215 new_level = level == 0 ? 0 : level - 1;
3216 } else if (sscanf(cmd, "level %d", &new_level) == 1 &&
3217 new_level >= 0 && new_level <= 7) {
3218 /* new_level set */
3219 } else
3220 return -EINVAL;
3221
8acb0250 3222 brightness_set(new_level);
78f81cc4
BD		 3223 }
3224
3225 return 0;
3226}
3227
a5763f22
HMH		 3228static struct ibm_struct brightness_driver_data = {
3229 .name = "brightness",
3230 .read = brightness_read,
3231 .write = brightness_write,
3232 .exit = brightness_exit,
3233};
3234
56b6aeb0
HMH		 3235/*************************************************************************
3236 * Volume subdriver
3237 */
fb87a811 3238
78f81cc4
BD		 3239static int volume_read(char *p)
3240{
3241 int len = 0;
3242 u8 level;
3243
3244 if (!acpi_ec_read(volume_offset, &level)) {
3245 len += sprintf(p + len, "level:\t\tunreadable\n");
3246 } else {
3247 len += sprintf(p + len, "level:\t\t%d\n", level & 0xf);
3248 len += sprintf(p + len, "mute:\t\t%s\n", onoff(level, 6));
3249 len += sprintf(p + len, "commands:\tup, down, mute\n");
3250 len += sprintf(p + len, "commands:\tlevel <level>"
3251 " (<level> is 0-15)\n");
3252 }
3253
3254 return len;
3255}
3256
78f81cc4
BD		 3257static int volume_write(char *buf)
3258{
3259 int cmos_cmd, inc, i;
3260 u8 level, mute;
3261 int new_level, new_mute;
3262 char *cmd;
3263
3264 while ((cmd = next_cmd(&buf))) {
3265 if (!acpi_ec_read(volume_offset, &level))
3266 return -EIO;
3267 new_mute = mute = level & 0x40;
3268 new_level = level = level & 0xf;
3269
3270 if (strlencmp(cmd, "up") == 0) {
3271 if (mute)
3272 new_mute = 0;
3273 else
3274 new_level = level == 15 ? 15 : level + 1;
3275 } else if (strlencmp(cmd, "down") == 0) {
3276 if (mute)
3277 new_mute = 0;
3278 else
3279 new_level = level == 0 ? 0 : level - 1;
3280 } else if (sscanf(cmd, "level %d", &new_level) == 1 &&
3281 new_level >= 0 && new_level <= 15) {
3282 /* new_level set */
3283 } else if (strlencmp(cmd, "mute") == 0) {
3284 new_mute = 0x40;
1da177e4
LT		 3285 } else
3286 return -EINVAL;
3287
78f81cc4 3288 if (new_level != level) { /* mute doesn't change */
56b6aeb0 3289 cmos_cmd = new_level > level ? TP_CMOS_VOLUME_UP : TP_CMOS_VOLUME_DOWN;
78f81cc4
BD		 3290 inc = new_level > level ? 1 : -1;
3291
c9bea99c 3292 if (mute && (issue_thinkpad_cmos_command(cmos_cmd) ||
78f81cc4
BD		 3293 !acpi_ec_write(volume_offset, level)))
3294 return -EIO;
3295
3296 for (i = level; i != new_level; i += inc)
c9bea99c 3297 if (issue_thinkpad_cmos_command(cmos_cmd) ||
78f81cc4
BD		 3298 !acpi_ec_write(volume_offset, i + inc))
3299 return -EIO;
3300
c9bea99c 3301 if (mute && (issue_thinkpad_cmos_command(TP_CMOS_VOLUME_MUTE) ||
78f81cc4
BD		 3302 !acpi_ec_write(volume_offset,
3303 new_level + mute)))
3304 return -EIO;
3305 }
3306
3307 if (new_mute != mute) { /* level doesn't change */
56b6aeb0 3308 cmos_cmd = new_mute ? TP_CMOS_VOLUME_MUTE : TP_CMOS_VOLUME_UP;
78f81cc4 3309
c9bea99c 3310 if (issue_thinkpad_cmos_command(cmos_cmd) ||
78f81cc4
BD		 3311 !acpi_ec_write(volume_offset, level + new_mute))
3312 return -EIO;
3313 }
3314 }
3315
3316 return 0;
3317}
3318
a5763f22
HMH		 3319static struct ibm_struct volume_driver_data = {
3320 .name = "volume",
3321 .read = volume_read,
3322 .write = volume_write,
3323};
56b6aeb0
HMH		 3324
3325/*************************************************************************
3326 * Fan subdriver
3327 */
3328
3329/*
3330 * FAN ACCESS MODES
3331 *
efa27145 3332 * TPACPI_FAN_RD_ACPI_GFAN:
56b6aeb0
HMH		 3333 * ACPI GFAN method: returns fan level
3334 *
efa27145 3335 * see TPACPI_FAN_WR_ACPI_SFAN
f51d1a39 3336 * EC 0x2f (HFSP) not available if GFAN exists
56b6aeb0 3337 *
efa27145 3338 * TPACPI_FAN_WR_ACPI_SFAN:
56b6aeb0
HMH		 3339 * ACPI SFAN method: sets fan level, 0 (stop) to 7 (max)
3340 *
f51d1a39
HMH		 3341 * EC 0x2f (HFSP) might be available *for reading*, but do not use
3342 * it for writing.
56b6aeb0 3343 *
efa27145 3344 * TPACPI_FAN_WR_TPEC:
f51d1a39
HMH		 3345 * ThinkPad EC register 0x2f (HFSP): fan control loop mode
3346 * Supported on almost all ThinkPads
56b6aeb0
HMH		 3347 *
3348 * Fan speed changes of any sort (including those caused by the
3349 * disengaged mode) are usually done slowly by the firmware as the
3350 * maximum ammount of fan duty cycle change per second seems to be
3351 * limited.
3352 *
3353 * Reading is not available if GFAN exists.
3354 * Writing is not available if SFAN exists.
3355 *
3356 * Bits
3357 * 7 automatic mode engaged;
3358 * (default operation mode of the ThinkPad)
3359 * fan level is ignored in this mode.
f51d1a39 3360 * 6 full speed mode (takes precedence over bit 7);
56b6aeb0 3361 * not available on all thinkpads. May disable
f51d1a39
HMH		 3362 * the tachometer while the fan controller ramps up
3363 * the speed (which can take up to a few *minutes*).
3364 * Speeds up fan to 100% duty-cycle, which is far above
3365 * the standard RPM levels. It is not impossible that
3366 * it could cause hardware damage.
56b6aeb0
HMH		 3367 * 5-3 unused in some models. Extra bits for fan level
3368 * in others, but still useless as all values above
3369 * 7 map to the same speed as level 7 in these models.
3370 * 2-0 fan level (0..7 usually)
3371 * 0x00 = stop
3372 * 0x07 = max (set when temperatures critical)
3373 * Some ThinkPads may have other levels, see
efa27145 3374 * TPACPI_FAN_WR_ACPI_FANS (X31/X40/X41)
56b6aeb0
HMH		 3375 *
3376 * FIRMWARE BUG: on some models, EC 0x2f might not be initialized at
3377 * boot. Apparently the EC does not intialize it, so unless ACPI DSDT
3378 * does so, its initial value is meaningless (0x07).
3379 *
3380 * For firmware bugs, refer to:
3381 * http://thinkwiki.org/wiki/Embedded_Controller_Firmware#Firmware_Issues
3382 *
3383 * ----
3384 *
3385 * ThinkPad EC register 0x84 (LSB), 0x85 (MSB):
3386 * Main fan tachometer reading (in RPM)
3387 *
3388 * This register is present on all ThinkPads with a new-style EC, and
3389 * it is known not to be present on the A21m/e, and T22, as there is
3390 * something else in offset 0x84 according to the ACPI DSDT. Other
3391 * ThinkPads from this same time period (and earlier) probably lack the
3392 * tachometer as well.
3393 *
3394 * Unfortunately a lot of ThinkPads with new-style ECs but whose firwmare
3395 * was never fixed by IBM to report the EC firmware version string
3396 * probably support the tachometer (like the early X models), so
3397 * detecting it is quite hard. We need more data to know for sure.
3398 *
3399 * FIRMWARE BUG: always read 0x84 first, otherwise incorrect readings
3400 * might result.
3401 *
f51d1a39
HMH		 3402 * FIRMWARE BUG: may go stale while the EC is switching to full speed
3403 * mode.
56b6aeb0
HMH		 3404 *
3405 * For firmware bugs, refer to:
3406 * http://thinkwiki.org/wiki/Embedded_Controller_Firmware#Firmware_Issues
3407 *
efa27145 3408 * TPACPI_FAN_WR_ACPI_FANS:
56b6aeb0
HMH		 3409 * ThinkPad X31, X40, X41. Not available in the X60.
3410 *
3411 * FANS ACPI handle: takes three arguments: low speed, medium speed,
3412 * high speed. ACPI DSDT seems to map these three speeds to levels
3413 * as follows: STOP LOW LOW MED MED HIGH HIGH HIGH HIGH
3414 * (this map is stored on FAN0..FAN8 as "0,1,1,2,2,3,3,3,3")
3415 *
3416 * The speeds are stored on handles
3417 * (FANA:FAN9), (FANC:FANB), (FANE:FAND).
3418 *
3419 * There are three default speed sets, acessible as handles:
3420 * FS1L,FS1M,FS1H; FS2L,FS2M,FS2H; FS3L,FS3M,FS3H
3421 *
3422 * ACPI DSDT switches which set is in use depending on various
3423 * factors.
3424 *
efa27145 3425 * TPACPI_FAN_WR_TPEC is also available and should be used to
56b6aeb0
HMH		 3426 * command the fan. The X31/X40/X41 seems to have 8 fan levels,
3427 * but the ACPI tables just mention level 7.
3428 */
3429
69ba91cb
HMH		 3430static enum fan_status_access_mode fan_status_access_mode;
3431static enum fan_control_access_mode fan_control_access_mode;
3432static enum fan_control_commands fan_control_commands;
78f81cc4 3433
778b4d74 3434static u8 fan_control_initial_status;
fe98a52c 3435static u8 fan_control_desired_level;
778b4d74 3436
25c68a33 3437static void fan_watchdog_fire(struct work_struct *ignored);
16663a87 3438static int fan_watchdog_maxinterval;
25c68a33 3439static DECLARE_DELAYED_WORK(fan_watchdog_task, fan_watchdog_fire);
16663a87 3440
56b6aeb0
HMH		 3441IBM_HANDLE(fans, ec, "FANS"); /* X31, X40, X41 */
3442IBM_HANDLE(gfan, ec, "GFAN", /* 570 */
3443 "\\FSPD", /* 600e/x, 770e, 770x */
3444 ); /* all others */
3445IBM_HANDLE(sfan, ec, "SFAN", /* 570 */
3446 "JFNS", /* 770x-JL */
3447 ); /* all others */
3448
fe98a52c
HMH		 3449/*
3450 * SYSFS fan layout: hwmon compatible (device)
3451 *
3452 * pwm*_enable:
3453 * 0: "disengaged" mode
3454 * 1: manual mode
3455 * 2: native EC "auto" mode (recommended, hardware default)
3456 *
3457 * pwm*: set speed in manual mode, ignored otherwise.
3458 * 0 is level 0; 255 is level 7. Intermediate points done with linear
3459 * interpolation.
3460 *
3461 * fan*_input: tachometer reading, RPM
3462 *
3463 *
3464 * SYSFS fan layout: extensions
3465 *
3466 * fan_watchdog (driver):
3467 * fan watchdog interval in seconds, 0 disables (default), max 120
3468 */
3469
3470/* sysfs fan pwm1_enable ----------------------------------------------- */
3471static ssize_t fan_pwm1_enable_show(struct device *dev,
3472 struct device_attribute *attr,
3473 char *buf)
3474{
3475 int res, mode;
3476 u8 status;
3477
3478 res = fan_get_status_safe(&status);
3479 if (res)
3480 return res;
3481
3482 if (unlikely(tp_features.fan_ctrl_status_undef)) {
3483 if (status != fan_control_initial_status) {
3484 tp_features.fan_ctrl_status_undef = 0;
3485 } else {
3486 /* Return most likely status. In fact, it
3487 * might be the only possible status */
3488 status = TP_EC_FAN_AUTO;
3489 }
3490 }
3491
3492 if (status & TP_EC_FAN_FULLSPEED) {
3493 mode = 0;
3494 } else if (status & TP_EC_FAN_AUTO) {
3495 mode = 2;
3496 } else
3497 mode = 1;
3498
3499 return snprintf(buf, PAGE_SIZE, "%d\n", mode);
3500}
3501
3502static ssize_t fan_pwm1_enable_store(struct device *dev,
3503 struct device_attribute *attr,
3504 const char *buf, size_t count)
3505{
3506 unsigned long t;
3507 int res, level;
3508
3509 if (parse_strtoul(buf, 2, &t))
3510 return -EINVAL;
3511
3512 switch (t) {
3513 case 0:
3514 level = TP_EC_FAN_FULLSPEED;
3515 break;
3516 case 1:
3517 level = TPACPI_FAN_LAST_LEVEL;
3518 break;
3519 case 2:
3520 level = TP_EC_FAN_AUTO;
3521 break;
3522 case 3:
3523 /* reserved for software-controlled auto mode */
3524 return -ENOSYS;
3525 default:
3526 return -EINVAL;
3527 }
3528
3529 res = fan_set_level_safe(level);
c573ddb9
HMH		 3530 if (res == -ENXIO)
3531 return -EINVAL;
3532 else if (res < 0)
fe98a52c
HMH		 3533 return res;
3534
3535 fan_watchdog_reset();
3536
3537 return count;
3538}
3539
3540static struct device_attribute dev_attr_fan_pwm1_enable =
3541 __ATTR(pwm1_enable, S_IWUSR | S_IRUGO,
3542 fan_pwm1_enable_show, fan_pwm1_enable_store);
3543
3544/* sysfs fan pwm1 ------------------------------------------------------ */
3545static ssize_t fan_pwm1_show(struct device *dev,
3546 struct device_attribute *attr,
3547 char *buf)
3548{
3549 int res;
3550 u8 status;
3551
3552 res = fan_get_status_safe(&status);
3553 if (res)
3554 return res;
3555
3556 if (unlikely(tp_features.fan_ctrl_status_undef)) {
3557 if (status != fan_control_initial_status) {
3558 tp_features.fan_ctrl_status_undef = 0;
3559 } else {
3560 status = TP_EC_FAN_AUTO;
3561 }
3562 }
3563
3564 if ((status &
3565 (TP_EC_FAN_AUTO | TP_EC_FAN_FULLSPEED)) != 0)
3566 status = fan_control_desired_level;
3567
3568 if (status > 7)
3569 status = 7;
3570
3571 return snprintf(buf, PAGE_SIZE, "%u\n", (status * 255) / 7);
3572}
3573
3574static ssize_t fan_pwm1_store(struct device *dev,
3575 struct device_attribute *attr,
3576 const char *buf, size_t count)
3577{
3578 unsigned long s;
3579 int rc;
3580 u8 status, newlevel;
3581
3582 if (parse_strtoul(buf, 255, &s))
3583 return -EINVAL;
3584
3585 /* scale down from 0-255 to 0-7 */
3586 newlevel = (s >> 5) & 0x07;
3587
3588 rc = mutex_lock_interruptible(&fan_mutex);
3589 if (rc < 0)
3590 return rc;
3591
3592 rc = fan_get_status(&status);
3593 if (!rc && (status &
3594 (TP_EC_FAN_AUTO | TP_EC_FAN_FULLSPEED)) == 0) {
3595 rc = fan_set_level(newlevel);
c573ddb9
HMH		 3596 if (rc == -ENXIO)
3597 rc = -EINVAL;
3598 else if (!rc) {
fe98a52c 3599 fan_update_desired_level(newlevel);
ca4ac2f4
HMH		 3600 fan_watchdog_reset();
3601 }
fe98a52c
HMH		 3602 }
3603
3604 mutex_unlock(&fan_mutex);
3605 return (rc)? rc : count;
3606}
3607
3608static struct device_attribute dev_attr_fan_pwm1 =
3609 __ATTR(pwm1, S_IWUSR | S_IRUGO,
3610 fan_pwm1_show, fan_pwm1_store);
3611
3612/* sysfs fan fan1_input ------------------------------------------------ */
3613static ssize_t fan_fan1_input_show(struct device *dev,
3614 struct device_attribute *attr,
3615 char *buf)
3616{
3617 int res;
3618 unsigned int speed;
3619
3620 res = fan_get_speed(&speed);
3621 if (res < 0)
3622 return res;
3623
3624 return snprintf(buf, PAGE_SIZE, "%u\n", speed);
3625}
3626
3627static struct device_attribute dev_attr_fan_fan1_input =
3628 __ATTR(fan1_input, S_IRUGO,
3629 fan_fan1_input_show, NULL);
3630
3631/* sysfs fan fan_watchdog (driver) ------------------------------------- */
3632static ssize_t fan_fan_watchdog_show(struct device_driver *drv,
3633 char *buf)
3634{
3635 return snprintf(buf, PAGE_SIZE, "%u\n", fan_watchdog_maxinterval);
3636}
3637
3638static ssize_t fan_fan_watchdog_store(struct device_driver *drv,
3639 const char *buf, size_t count)
3640{
3641 unsigned long t;
3642
3643 if (parse_strtoul(buf, 120, &t))
3644 return -EINVAL;
3645
ecf2a80a
HMH		 3646 if (!fan_control_allowed)
3647 return -EPERM;
3648
fe98a52c
HMH		 3649 fan_watchdog_maxinterval = t;
3650 fan_watchdog_reset();
3651
3652 return count;
3653}
3654
3655static DRIVER_ATTR(fan_watchdog, S_IWUSR | S_IRUGO,
3656 fan_fan_watchdog_show, fan_fan_watchdog_store);
3657
3658/* --------------------------------------------------------------------- */
3659static struct attribute *fan_attributes[] = {
3660 &dev_attr_fan_pwm1_enable.attr, &dev_attr_fan_pwm1.attr,
3661 &dev_attr_fan_fan1_input.attr,
3662 NULL
3663};
3664
3665static const struct attribute_group fan_attr_group = {
3666 .attrs = fan_attributes,
3667};
3668
a5763f22 3669static int __init fan_init(struct ibm_init_struct *iibm)
78f81cc4 3670{
fe98a52c
HMH		 3671 int rc;
3672
fe08bc4b
HMH		 3673 vdbg_printk(TPACPI_DBG_INIT, "initializing fan subdriver\n");
3674
40ca9fdf 3675 mutex_init(&fan_mutex);
efa27145
HMH		 3676 fan_status_access_mode = TPACPI_FAN_NONE;
3677 fan_control_access_mode = TPACPI_FAN_WR_NONE;
69ba91cb 3678 fan_control_commands = 0;
16663a87 3679 fan_watchdog_maxinterval = 0;
d8fd94d9 3680 tp_features.fan_ctrl_status_undef = 0;
fe98a52c 3681 fan_control_desired_level = 7;
78f81cc4 3682
8d376cd6
HMH		 3683 IBM_ACPIHANDLE_INIT(fans);
3684 IBM_ACPIHANDLE_INIT(gfan);
3685 IBM_ACPIHANDLE_INIT(sfan);
5fba344c 3686
78f81cc4
BD		 3687 if (gfan_handle) {
3688 /* 570, 600e/x, 770e, 770x */
efa27145 3689 fan_status_access_mode = TPACPI_FAN_RD_ACPI_GFAN;
69ba91cb
HMH		 3690 } else {
3691 /* all other ThinkPads: note that even old-style
3692 * ThinkPad ECs supports the fan control register */
778b4d74
HMH		 3693 if (likely(acpi_ec_read(fan_status_offset,
3694 &fan_control_initial_status))) {
efa27145 3695 fan_status_access_mode = TPACPI_FAN_RD_TPEC;
778b4d74
HMH		 3696
3697 /* In some ThinkPads, neither the EC nor the ACPI
3698 * DSDT initialize the fan status, and it ends up
3699 * being set to 0x07 when it *could* be either
3700 * 0x07 or 0x80.
3701 *
3702 * Enable for TP-1Y (T43), TP-78 (R51e),
3703 * TP-76 (R52), TP-70 (T43, R52), which are known
3704 * to be buggy. */
d5a2f2f1
HMH		 3705 if (fan_control_initial_status == 0x07) {
3706 switch (thinkpad_id.ec_model) {
3707 case 0x5931: /* TP-1Y */
3708 case 0x3837: /* TP-78 */
3709 case 0x3637: /* TP-76 */
3710 case 0x3037: /* TP-70 */
3711 printk(IBM_NOTICE
3712 "fan_init: initial fan status is "
3713 "unknown, assuming it is in auto "
3714 "mode\n");
3715 tp_features.fan_ctrl_status_undef = 1;
3716 ;;
3717 }
778b4d74 3718 }
69ba91cb
HMH		 3719 } else {
3720 printk(IBM_ERR
3721 "ThinkPad ACPI EC access misbehaving, "
3722 "fan status and control unavailable\n");
5fba344c 3723 return 1;
69ba91cb
HMH		 3724 }
3725 }
78f81cc4 3726
69ba91cb
HMH		 3727 if (sfan_handle) {
3728 /* 570, 770x-JL */
efa27145 3729 fan_control_access_mode = TPACPI_FAN_WR_ACPI_SFAN;
1c6a334e 3730 fan_control_commands |=
efa27145 3731 TPACPI_FAN_CMD_LEVEL | TPACPI_FAN_CMD_ENABLE;
78f81cc4 3732 } else {
69ba91cb
HMH		 3733 if (!gfan_handle) {
3734 /* gfan without sfan means no fan control */
3735 /* all other models implement TP EC 0x2f control */
3736
3737 if (fans_handle) {
a8b7a662 3738 /* X31, X40, X41 */
69ba91cb 3739 fan_control_access_mode =
efa27145 3740 TPACPI_FAN_WR_ACPI_FANS;
69ba91cb 3741 fan_control_commands |=
efa27145
HMH		 3742 TPACPI_FAN_CMD_SPEED |
3743 TPACPI_FAN_CMD_LEVEL |
3744 TPACPI_FAN_CMD_ENABLE;
69ba91cb 3745 } else {
efa27145 3746 fan_control_access_mode = TPACPI_FAN_WR_TPEC;
a12095c2 3747 fan_control_commands |=
efa27145
HMH		 3748 TPACPI_FAN_CMD_LEVEL |
3749 TPACPI_FAN_CMD_ENABLE;
69ba91cb
HMH		 3750 }
3751 }
3752 }
3753
fe08bc4b
HMH		 3754 vdbg_printk(TPACPI_DBG_INIT, "fan is %s, modes %d, %d\n",
3755 str_supported(fan_status_access_mode != TPACPI_FAN_NONE ||
3756 fan_control_access_mode != TPACPI_FAN_WR_NONE),
3757 fan_status_access_mode, fan_control_access_mode);
3758
ecf2a80a
HMH		 3759 /* fan control master switch */
3760 if (!fan_control_allowed) {
3761 fan_control_access_mode = TPACPI_FAN_WR_NONE;
3762 fan_control_commands = 0;
3763 dbg_printk(TPACPI_DBG_INIT,
3764 "fan control features disabled by parameter\n");
3765 }
3766
fe98a52c
HMH		 3767 /* update fan_control_desired_level */
3768 if (fan_status_access_mode != TPACPI_FAN_NONE)
3769 fan_get_status_safe(NULL);
3770
3771 if (fan_status_access_mode != TPACPI_FAN_NONE ||
3772 fan_control_access_mode != TPACPI_FAN_WR_NONE) {
3773 rc = sysfs_create_group(&tpacpi_pdev->dev.kobj,
3774 &fan_attr_group);
3775 if (!(rc < 0))
3776 rc = driver_create_file(&tpacpi_pdriver.driver,
3777 &driver_attr_fan_watchdog);
3778 if (rc < 0)
3779 return rc;
3780 return 0;
3781 } else
3782 return 1;
3783}
3784
3785/*
3786 * Call with fan_mutex held
3787 */
3788static void fan_update_desired_level(u8 status)
3789{
3790 if ((status &
3791 (TP_EC_FAN_AUTO | TP_EC_FAN_FULLSPEED)) == 0) {
3792 if (status > 7)
3793 fan_control_desired_level = 7;
3794 else
3795 fan_control_desired_level = status;
3796 }
69ba91cb 3797}
78f81cc4 3798
c52f0aa5 3799static int fan_get_status(u8 *status)
78f81cc4 3800{
c52f0aa5 3801 u8 s;
78f81cc4 3802
a8b7a662 3803 /* TODO:
efa27145 3804 * Add TPACPI_FAN_RD_ACPI_FANS ? */
a8b7a662 3805
3ef8a609 3806 switch (fan_status_access_mode) {
efa27145 3807 case TPACPI_FAN_RD_ACPI_GFAN:
78f81cc4 3808 /* 570, 600e/x, 770e, 770x */
c52f0aa5
HMH		 3809
3810 if (unlikely(!acpi_evalf(gfan_handle, &s, NULL, "d")))
1da177e4 3811 return -EIO;
78f81cc4 3812
c52f0aa5
HMH		 3813 if (likely(status))
3814 *status = s & 0x07;
3ef8a609
HMH		 3815
3816 break;
3817
efa27145 3818 case TPACPI_FAN_RD_TPEC:
78f81cc4 3819 /* all except 570, 600e/x, 770e, 770x */
c52f0aa5 3820 if (unlikely(!acpi_ec_read(fan_status_offset, &s)))
3ef8a609 3821 return -EIO;
78f81cc4 3822
c52f0aa5
HMH		 3823 if (likely(status))
3824 *status = s;
3825
3826 break;
3827
3828 default:
3829 return -ENXIO;
78f81cc4
BD		 3830 }
3831
c52f0aa5
HMH		 3832 return 0;
3833}
3834
fe98a52c
HMH		 3835static int fan_get_status_safe(u8 *status)
3836{
3837 int rc;
3838 u8 s;
3839
3840 rc = mutex_lock_interruptible(&fan_mutex);
3841 if (rc < 0)
3842 return rc;
3843 rc = fan_get_status(&s);
3844 if (!rc)
3845 fan_update_desired_level(s);
3846 mutex_unlock(&fan_mutex);
3847
3848 if (status)
3849 *status = s;
3850
3851 return rc;
3852}
3853
56b6aeb0
HMH		 3854static void fan_exit(void)
3855{
99fba3f8 3856 vdbg_printk(TPACPI_DBG_EXIT, "cancelling any pending fan watchdog tasks\n");
fe98a52c
HMH		 3857
3858 /* FIXME: can we really do this unconditionally? */
3859 sysfs_remove_group(&tpacpi_pdev->dev.kobj, &fan_attr_group);
3860 driver_remove_file(&tpacpi_pdriver.driver, &driver_attr_fan_watchdog);
3861
56b6aeb0
HMH		 3862 cancel_delayed_work(&fan_watchdog_task);
3863 flush_scheduled_work();
3864}
3865
c52f0aa5
HMH		 3866static int fan_get_speed(unsigned int *speed)
3867{
3868 u8 hi, lo;
3869
3870 switch (fan_status_access_mode) {
efa27145 3871 case TPACPI_FAN_RD_TPEC:
78f81cc4 3872 /* all except 570, 600e/x, 770e, 770x */
3ef8a609
HMH		 3873 if (unlikely(!acpi_ec_read(fan_rpm_offset, &lo) ||
3874 !acpi_ec_read(fan_rpm_offset + 1, &hi)))
3875 return -EIO;
3ef8a609 3876
c52f0aa5
HMH		 3877 if (likely(speed))
3878 *speed = (hi << 8) | lo;
3879
3880 break;
3881
3882 default:
3883 return -ENXIO;
3884 }
3885
3886 return 0;
3887}
3888
56b6aeb0 3889static void fan_watchdog_fire(struct work_struct *ignored)
16663a87 3890{
99fba3f8
HMH		 3891 int rc;
3892
56b6aeb0 3893 printk(IBM_NOTICE "fan watchdog: enabling fan\n");
99fba3f8
HMH		 3894 rc = fan_set_enable();
3895 if (rc < 0) {
3896 printk(IBM_ERR "fan watchdog: error %d while enabling fan, "
3897 "will try again later...\n", -rc);
56b6aeb0
HMH		 3898 /* reschedule for later */
3899 fan_watchdog_reset();
3900 }
16663a87
HMH		 3901}
3902
3903static void fan_watchdog_reset(void)
3904{
94954cc6 3905 static int fan_watchdog_active;
16663a87 3906
4985cd0a
HMH		 3907 if (fan_control_access_mode == TPACPI_FAN_WR_NONE)
3908 return;
3909
16663a87
HMH		 3910 if (fan_watchdog_active)
3911 cancel_delayed_work(&fan_watchdog_task);
3912
3913 if (fan_watchdog_maxinterval > 0) {
3914 fan_watchdog_active = 1;
3915 if (!schedule_delayed_work(&fan_watchdog_task,
3916 msecs_to_jiffies(fan_watchdog_maxinterval
3917 * 1000))) {
3918 printk(IBM_ERR "failed to schedule the fan watchdog, "
3919 "watchdog will not trigger\n");
3920 }
3921 } else
3922 fan_watchdog_active = 0;
3923}
3924
18ad7996 3925static int fan_set_level(int level)
78f81cc4 3926{
ecf2a80a
HMH		 3927 if (!fan_control_allowed)
3928 return -EPERM;
3929
18ad7996 3930 switch (fan_control_access_mode) {
efa27145 3931 case TPACPI_FAN_WR_ACPI_SFAN:
18ad7996 3932 if (level >= 0 && level <= 7) {
fe98a52c 3933 if (!acpi_evalf(sfan_handle, NULL, NULL, "vd", level))
78f81cc4 3934 return -EIO;
18ad7996
HMH		 3935 } else
3936 return -EINVAL;
3937 break;
3938
efa27145
HMH		 3939 case TPACPI_FAN_WR_ACPI_FANS:
3940 case TPACPI_FAN_WR_TPEC:
3941 if ((level != TP_EC_FAN_AUTO) &&
3942 (level != TP_EC_FAN_FULLSPEED) &&
a12095c2
HMH		 3943 ((level < 0) || (level > 7)))
3944 return -EINVAL;
3945
eaa7571b
HMH		 3946 /* safety net should the EC not support AUTO
3947 * or FULLSPEED mode bits and just ignore them */
3948 if (level & TP_EC_FAN_FULLSPEED)
3949 level |= 7; /* safety min speed 7 */
3950 else if (level & TP_EC_FAN_FULLSPEED)
3951 level |= 4; /* safety min speed 4 */
3952
fe98a52c 3953 if (!acpi_ec_write(fan_status_offset, level))
a12095c2 3954 return -EIO;
778b4d74 3955 else
d8fd94d9 3956 tp_features.fan_ctrl_status_undef = 0;
a12095c2
HMH		 3957 break;
3958
18ad7996
HMH		 3959 default:
3960 return -ENXIO;
3961 }
3962 return 0;
3963}
3964
fe98a52c
HMH		 3965static int fan_set_level_safe(int level)
3966{
3967 int rc;
3968
ecf2a80a
HMH		 3969 if (!fan_control_allowed)
3970 return -EPERM;
3971
fe98a52c
HMH		 3972 rc = mutex_lock_interruptible(&fan_mutex);
3973 if (rc < 0)
3974 return rc;
3975
3976 if (level == TPACPI_FAN_LAST_LEVEL)
3977 level = fan_control_desired_level;
3978
3979 rc = fan_set_level(level);
3980 if (!rc)
3981 fan_update_desired_level(level);
3982
3983 mutex_unlock(&fan_mutex);
3984 return rc;
3985}
3986
18ad7996
HMH		 3987static int fan_set_enable(void)
3988{
1c6a334e
HMH		 3989 u8 s;
3990 int rc;
3991
ecf2a80a
HMH		 3992 if (!fan_control_allowed)
3993 return -EPERM;
3994
40ca9fdf
HMH		 3995 rc = mutex_lock_interruptible(&fan_mutex);
3996 if (rc < 0)
3997 return rc;
3998
18ad7996 3999 switch (fan_control_access_mode) {
efa27145
HMH		 4000 case TPACPI_FAN_WR_ACPI_FANS:
4001 case TPACPI_FAN_WR_TPEC:
40ca9fdf
HMH		 4002 rc = fan_get_status(&s);
4003 if (rc < 0)
4004 break;
1c6a334e
HMH		 4005
4006 /* Don't go out of emergency fan mode */
eaa7571b
HMH		 4007 if (s != 7) {
4008 s &= 0x07;
4009 s |= TP_EC_FAN_AUTO | 4; /* min fan speed 4 */
4010 }
1c6a334e
HMH		 4011
4012 if (!acpi_ec_write(fan_status_offset, s))
40ca9fdf
HMH		 4013 rc = -EIO;
4014 else {
d8fd94d9 4015 tp_features.fan_ctrl_status_undef = 0;
40ca9fdf
HMH		 4016 rc = 0;
4017 }
1c6a334e
HMH		 4018 break;
4019
efa27145 4020 case TPACPI_FAN_WR_ACPI_SFAN:
40ca9fdf
HMH		 4021 rc = fan_get_status(&s);
4022 if (rc < 0)
4023 break;
1c6a334e
HMH		 4024
4025 s &= 0x07;
4026
4027 /* Set fan to at least level 4 */
eaa7571b 4028 s |= 4;
1c6a334e
HMH		 4029
4030 if (!acpi_evalf(sfan_handle, NULL, NULL, "vd", s))
40ca9fdf
HMH		 4031 rc= -EIO;
4032 else
4033 rc = 0;
18ad7996
HMH		 4034 break;
4035
4036 default:
40ca9fdf 4037 rc = -ENXIO;
18ad7996 4038 }
40ca9fdf
HMH		 4039
4040 mutex_unlock(&fan_mutex);
4041 return rc;
18ad7996
HMH		 4042}
4043
4044static int fan_set_disable(void)
4045{
40ca9fdf
HMH		 4046 int rc;
4047
ecf2a80a
HMH		 4048 if (!fan_control_allowed)
4049 return -EPERM;
4050
40ca9fdf
HMH		 4051 rc = mutex_lock_interruptible(&fan_mutex);
4052 if (rc < 0)
4053 return rc;
4054
4055 rc = 0;
18ad7996 4056 switch (fan_control_access_mode) {
efa27145
HMH		 4057 case TPACPI_FAN_WR_ACPI_FANS:
4058 case TPACPI_FAN_WR_TPEC:
18ad7996 4059 if (!acpi_ec_write(fan_status_offset, 0x00))
40ca9fdf 4060 rc = -EIO;
fe98a52c
HMH		 4061 else {
4062 fan_control_desired_level = 0;
d8fd94d9 4063 tp_features.fan_ctrl_status_undef = 0;
fe98a52c 4064 }
18ad7996
HMH		 4065 break;
4066
efa27145 4067 case TPACPI_FAN_WR_ACPI_SFAN:
1c6a334e 4068 if (!acpi_evalf(sfan_handle, NULL, NULL, "vd", 0x00))
40ca9fdf 4069 rc = -EIO;
fe98a52c
HMH		 4070 else
4071 fan_control_desired_level = 0;
1c6a334e
HMH		 4072 break;
4073
18ad7996 4074 default:
40ca9fdf 4075 rc = -ENXIO;
18ad7996 4076 }
40ca9fdf 4077
fe98a52c 4078
40ca9fdf
HMH		 4079 mutex_unlock(&fan_mutex);
4080 return rc;
56b6aeb0
HMH		 4081}
4082
4083static int fan_set_speed(int speed)
4084{
40ca9fdf
HMH		 4085 int rc;
4086
ecf2a80a
HMH		 4087 if (!fan_control_allowed)
4088 return -EPERM;
4089
40ca9fdf
HMH		 4090 rc = mutex_lock_interruptible(&fan_mutex);
4091 if (rc < 0)
4092 return rc;
4093
4094 rc = 0;
56b6aeb0 4095 switch (fan_control_access_mode) {
efa27145 4096 case TPACPI_FAN_WR_ACPI_FANS:
56b6aeb0
HMH		 4097 if (speed >= 0 && speed <= 65535) {
4098 if (!acpi_evalf(fans_handle, NULL, NULL, "vddd",
4099 speed, speed, speed))
40ca9fdf 4100 rc = -EIO;
56b6aeb0 4101 } else
40ca9fdf 4102 rc = -EINVAL;
56b6aeb0
HMH		 4103 break;
4104
4105 default:
40ca9fdf 4106 rc = -ENXIO;
56b6aeb0 4107 }
40ca9fdf
HMH		 4108
4109 mutex_unlock(&fan_mutex);
4110 return rc;
56b6aeb0
HMH		 4111}
4112
4113static int fan_read(char *p)
4114{
4115 int len = 0;
4116 int rc;
4117 u8 status;
4118 unsigned int speed = 0;
4119
4120 switch (fan_status_access_mode) {
efa27145 4121 case TPACPI_FAN_RD_ACPI_GFAN:
56b6aeb0 4122 /* 570, 600e/x, 770e, 770x */
fe98a52c 4123 if ((rc = fan_get_status_safe(&status)) < 0)
56b6aeb0
HMH		 4124 return rc;
4125
4126 len += sprintf(p + len, "status:\t\t%s\n"
4127 "level:\t\t%d\n",
4128 (status != 0) ? "enabled" : "disabled", status);
4129 break;
4130
efa27145 4131 case TPACPI_FAN_RD_TPEC:
56b6aeb0 4132 /* all except 570, 600e/x, 770e, 770x */
fe98a52c 4133 if ((rc = fan_get_status_safe(&status)) < 0)
56b6aeb0
HMH		 4134 return rc;
4135
d8fd94d9 4136 if (unlikely(tp_features.fan_ctrl_status_undef)) {
56b6aeb0 4137 if (status != fan_control_initial_status)
d8fd94d9 4138 tp_features.fan_ctrl_status_undef = 0;
56b6aeb0
HMH		 4139 else
4140 /* Return most likely status. In fact, it
4141 * might be the only possible status */
efa27145 4142 status = TP_EC_FAN_AUTO;
56b6aeb0
HMH		 4143 }
4144
4145 len += sprintf(p + len, "status:\t\t%s\n",
4146 (status != 0) ? "enabled" : "disabled");
4147
56b6aeb0
HMH		 4148 if ((rc = fan_get_speed(&speed)) < 0)
4149 return rc;
4150
4151 len += sprintf(p + len, "speed:\t\t%d\n", speed);
4152
efa27145 4153 if (status & TP_EC_FAN_FULLSPEED)
56b6aeb0
HMH		 4154 /* Disengaged mode takes precedence */
4155 len += sprintf(p + len, "level:\t\tdisengaged\n");
efa27145 4156 else if (status & TP_EC_FAN_AUTO)
56b6aeb0
HMH		 4157 len += sprintf(p + len, "level:\t\tauto\n");
4158 else
4159 len += sprintf(p + len, "level:\t\t%d\n", status);
4160 break;
4161
efa27145 4162 case TPACPI_FAN_NONE:
56b6aeb0
HMH		 4163 default:
4164 len += sprintf(p + len, "status:\t\tnot supported\n");
4165 }
4166
efa27145 4167 if (fan_control_commands & TPACPI_FAN_CMD_LEVEL) {
56b6aeb0
HMH		 4168 len += sprintf(p + len, "commands:\tlevel <level>");
4169
4170 switch (fan_control_access_mode) {
efa27145 4171 case TPACPI_FAN_WR_ACPI_SFAN:
56b6aeb0
HMH		 4172 len += sprintf(p + len, " (<level> is 0-7)\n");
4173 break;
4174
4175 default:
4176 len += sprintf(p + len, " (<level> is 0-7, "
fe98a52c 4177 "auto, disengaged, full-speed)\n");
56b6aeb0
HMH		 4178 break;
4179 }
4180 }
18ad7996 4181
efa27145 4182 if (fan_control_commands & TPACPI_FAN_CMD_ENABLE)
56b6aeb0
HMH		 4183 len += sprintf(p + len, "commands:\tenable, disable\n"
4184 "commands:\twatchdog <timeout> (<timeout> is 0 (off), "
4185 "1-120 (seconds))\n");
1da177e4 4186
efa27145 4187 if (fan_control_commands & TPACPI_FAN_CMD_SPEED)
56b6aeb0
HMH		 4188 len += sprintf(p + len, "commands:\tspeed <speed>"
4189 " (<speed> is 0-65535)\n");
4190
4191 return len;
78f81cc4
BD		 4192}
4193
18ad7996
HMH		 4194static int fan_write_cmd_level(const char *cmd, int *rc)
4195{
4196 int level;
4197
a12095c2 4198 if (strlencmp(cmd, "level auto") == 0)
efa27145 4199 level = TP_EC_FAN_AUTO;
fe98a52c
HMH		 4200 else if ((strlencmp(cmd, "level disengaged") == 0) |
4201 (strlencmp(cmd, "level full-speed") == 0))
efa27145 4202 level = TP_EC_FAN_FULLSPEED;
a12095c2 4203 else if (sscanf(cmd, "level %d", &level) != 1)
18ad7996
HMH		 4204 return 0;
4205
fe98a52c 4206 if ((*rc = fan_set_level_safe(level)) == -ENXIO)
18ad7996
HMH		 4207 printk(IBM_ERR "level command accepted for unsupported "
4208 "access mode %d", fan_control_access_mode);
4209
4210 return 1;
4211}
4212
4213static int fan_write_cmd_enable(const char *cmd, int *rc)
4214{
4215 if (strlencmp(cmd, "enable") != 0)
4216 return 0;
4217
4218 if ((*rc = fan_set_enable()) == -ENXIO)
4219 printk(IBM_ERR "enable command accepted for unsupported "
4220 "access mode %d", fan_control_access_mode);
4221
4222 return 1;
4223}
4224
4225static int fan_write_cmd_disable(const char *cmd, int *rc)
4226{
4227 if (strlencmp(cmd, "disable") != 0)
4228 return 0;
4229
4230 if ((*rc = fan_set_disable()) == -ENXIO)
4231 printk(IBM_ERR "disable command accepted for unsupported "
4232 "access mode %d", fan_control_access_mode);
4233
4234 return 1;
4235}
4236
4237static int fan_write_cmd_speed(const char *cmd, int *rc)
4238{
4239 int speed;
4240
a8b7a662
HMH		 4241 /* TODO:
4242 * Support speed <low> <medium> <high> ? */
4243
18ad7996
HMH		 4244 if (sscanf(cmd, "speed %d", &speed) != 1)
4245 return 0;
4246
4247 if ((*rc = fan_set_speed(speed)) == -ENXIO)
4248 printk(IBM_ERR "speed command accepted for unsupported "
4249 "access mode %d", fan_control_access_mode);
4250
4251 return 1;
4252}
4253
16663a87
HMH		 4254static int fan_write_cmd_watchdog(const char *cmd, int *rc)
4255{
4256 int interval;
4257
4258 if (sscanf(cmd, "watchdog %d", &interval) != 1)
4259 return 0;
4260
4261 if (interval < 0 || interval > 120)
4262 *rc = -EINVAL;
4263 else
4264 fan_watchdog_maxinterval = interval;
4265
4266 return 1;
4267}
4268
18ad7996
HMH		 4269static int fan_write(char *buf)
4270{
4271 char *cmd;
4272 int rc = 0;
4273
4274 while (!rc && (cmd = next_cmd(&buf))) {
efa27145 4275 if (!((fan_control_commands & TPACPI_FAN_CMD_LEVEL) &&
18ad7996 4276 fan_write_cmd_level(cmd, &rc)) &&
efa27145 4277 !((fan_control_commands & TPACPI_FAN_CMD_ENABLE) &&
18ad7996 4278 (fan_write_cmd_enable(cmd, &rc) ||
16663a87
HMH		 4279 fan_write_cmd_disable(cmd, &rc) ||
4280 fan_write_cmd_watchdog(cmd, &rc))) &&
efa27145 4281 !((fan_control_commands & TPACPI_FAN_CMD_SPEED) &&
18ad7996
HMH		 4282 fan_write_cmd_speed(cmd, &rc))
4283 )
4284 rc = -EINVAL;
16663a87
HMH		 4285 else if (!rc)
4286 fan_watchdog_reset();
18ad7996
HMH		 4287 }
4288
4289 return rc;
4290}
4291
a5763f22
HMH		 4292static struct ibm_struct fan_driver_data = {
4293 .name = "fan",
4294 .read = fan_read,
4295 .write = fan_write,
4296 .exit = fan_exit,
a5763f22
HMH		 4297};
4298
56b6aeb0
HMH		 4299/****************************************************************************
4300 ****************************************************************************
4301 *
4302 * Infrastructure
4303 *
4304 ****************************************************************************
4305 ****************************************************************************/
4306
4307/* /proc support */
94954cc6 4308static struct proc_dir_entry *proc_dir;
16663a87 4309
56b6aeb0 4310/* Subdriver registry */
a5763f22
HMH		 4311static LIST_HEAD(tpacpi_all_drivers);
4312
1da177e4 4313
56b6aeb0
HMH		 4314/*
4315 * Module and infrastructure proble, init and exit handling
4316 */
1da177e4 4317
fe08bc4b 4318#ifdef CONFIG_THINKPAD_ACPI_DEBUG
a5763f22 4319static const char * __init str_supported(int is_supported)
fe08bc4b 4320{
a5763f22 4321 static char text_unsupported[] __initdata = "not supported";
fe08bc4b 4322
a5763f22 4323 return (is_supported)? &text_unsupported[4] : &text_unsupported[0];
fe08bc4b
HMH		 4324}
4325#endif /* CONFIG_THINKPAD_ACPI_DEBUG */
4326
a5763f22 4327static int __init ibm_init(struct ibm_init_struct *iibm)
1da177e4
LT		 4328{
4329 int ret;
a5763f22 4330 struct ibm_struct *ibm = iibm->data;
1da177e4
LT		 4331 struct proc_dir_entry *entry;
4332
a5763f22
HMH		 4333 BUG_ON(ibm == NULL);
4334
4335 INIT_LIST_HEAD(&ibm->all_drivers);
4336
92641177 4337 if (ibm->flags.experimental && !experimental)
1da177e4
LT		 4338 return 0;
4339
fe08bc4b
HMH		 4340 dbg_printk(TPACPI_DBG_INIT,
4341 "probing for %s\n", ibm->name);
4342
a5763f22
HMH		 4343 if (iibm->init) {
4344 ret = iibm->init(iibm);
5fba344c
HMH		 4345 if (ret > 0)
4346 return 0; /* probe failed */
4347 if (ret)
1da177e4 4348 return ret;
a5763f22 4349
92641177 4350 ibm->flags.init_called = 1;
1da177e4
LT		 4351 }
4352
8d376cd6
HMH		 4353 if (ibm->acpi) {
4354 if (ibm->acpi->hid) {
4355 ret = register_tpacpi_subdriver(ibm);
4356 if (ret)
4357 goto err_out;
4358 }
5fba344c 4359
8d376cd6
HMH		 4360 if (ibm->acpi->notify) {
4361 ret = setup_acpi_notify(ibm);
4362 if (ret == -ENODEV) {
4363 printk(IBM_NOTICE "disabling subdriver %s\n",
4364 ibm->name);
4365 ret = 0;
4366 goto err_out;
4367 }
4368 if (ret < 0)
4369 goto err_out;
5fba344c 4370 }
5fba344c
HMH		 4371 }
4372
fe08bc4b
HMH		 4373 dbg_printk(TPACPI_DBG_INIT,
4374 "%s installed\n", ibm->name);
4375
78f81cc4
BD		 4376 if (ibm->read) {
4377 entry = create_proc_entry(ibm->name,
4378 S_IFREG | S_IRUGO | S_IWUSR,
4379 proc_dir);
4380 if (!entry) {
4381 printk(IBM_ERR "unable to create proc entry %s\n",
4382 ibm->name);
5fba344c
HMH		 4383 ret = -ENODEV;
4384 goto err_out;
78f81cc4
BD		 4385 }
4386 entry->owner = THIS_MODULE;
4387 entry->data = ibm;
8d376cd6 4388 entry->read_proc = &dispatch_procfs_read;
78f81cc4 4389 if (ibm->write)
8d376cd6 4390 entry->write_proc = &dispatch_procfs_write;
92641177 4391 ibm->flags.proc_created = 1;
78f81cc4 4392 }
1da177e4 4393
a5763f22
HMH		 4394 list_add_tail(&ibm->all_drivers, &tpacpi_all_drivers);
4395
1da177e4 4396 return 0;
5fba344c
HMH		 4397
4398err_out:
fe08bc4b
HMH		 4399 dbg_printk(TPACPI_DBG_INIT,
4400 "%s: at error exit path with result %d\n",
4401 ibm->name, ret);
4402
5fba344c
HMH		 4403 ibm_exit(ibm);
4404 return (ret < 0)? ret : 0;
1da177e4
LT		 4405}
4406
4407static void ibm_exit(struct ibm_struct *ibm)
4408{
fe08bc4b 4409 dbg_printk(TPACPI_DBG_EXIT, "removing %s\n", ibm->name);
a5763f22
HMH		 4410
4411 list_del_init(&ibm->all_drivers);
4412
8d376cd6 4413 if (ibm->flags.acpi_notify_installed) {
fe08bc4b
HMH		 4414 dbg_printk(TPACPI_DBG_EXIT,
4415 "%s: acpi_remove_notify_handler\n", ibm->name);
8d376cd6
HMH		 4416 BUG_ON(!ibm->acpi);
4417 acpi_remove_notify_handler(*ibm->acpi->handle,
4418 ibm->acpi->type,
4419 dispatch_acpi_notify);
4420 ibm->flags.acpi_notify_installed = 0;
4421 ibm->flags.acpi_notify_installed = 0;
5fba344c 4422 }
1da177e4 4423
92641177 4424 if (ibm->flags.proc_created) {
fe08bc4b
HMH		 4425 dbg_printk(TPACPI_DBG_EXIT,
4426 "%s: remove_proc_entry\n", ibm->name);
1da177e4 4427 remove_proc_entry(ibm->name, proc_dir);
92641177 4428 ibm->flags.proc_created = 0;
5fba344c 4429 }
1da177e4 4430
8d376cd6 4431 if (ibm->flags.acpi_driver_registered) {
fe08bc4b
HMH		 4432 dbg_printk(TPACPI_DBG_EXIT,
4433 "%s: acpi_bus_unregister_driver\n", ibm->name);
8d376cd6
HMH		 4434 BUG_ON(!ibm->acpi);
4435 acpi_bus_unregister_driver(ibm->acpi->driver);
4436 kfree(ibm->acpi->driver);
4437 ibm->acpi->driver = NULL;
4438 ibm->flags.acpi_driver_registered = 0;
5fba344c
HMH		 4439 }
4440
92641177 4441 if (ibm->flags.init_called && ibm->exit) {
5fba344c 4442 ibm->exit();
92641177 4443 ibm->flags.init_called = 0;
1da177e4 4444 }
a5763f22
HMH		 4445
4446 dbg_printk(TPACPI_DBG_INIT, "finished removing %s\n", ibm->name);
1da177e4
LT		 4447}
4448
56b6aeb0
HMH		 4449/* Probing */
4450
d5a2f2f1 4451static void __init get_thinkpad_model_data(struct thinkpad_id_data *tp)
1da177e4 4452{
56b6aeb0
HMH		 4453 struct dmi_device *dev = NULL;
4454 char ec_fw_string[18];
1da177e4 4455
d5a2f2f1
HMH		 4456 if (!tp)
4457 return;
4458
4459 memset(tp, 0, sizeof(*tp));
4460
4461 if (dmi_name_in_vendors("IBM"))
4462 tp->vendor = PCI_VENDOR_ID_IBM;
4463 else if (dmi_name_in_vendors("LENOVO"))
4464 tp->vendor = PCI_VENDOR_ID_LENOVO;
4465 else
4466 return;
4467
4468 tp->bios_version_str = kstrdup(dmi_get_system_info(DMI_BIOS_VERSION),
4469 GFP_KERNEL);
4470 if (!tp->bios_version_str)
4471 return;
4472 tp->bios_model = tp->bios_version_str[0]
4473 | (tp->bios_version_str[1] << 8);
4474
56b6aeb0
HMH		 4475 /*
4476 * ThinkPad T23 or newer, A31 or newer, R50e or newer,
4477 * X32 or newer, all Z series; Some models must have an
4478 * up-to-date BIOS or they will not be detected.
4479 *
4480 * See http://thinkwiki.org/wiki/List_of_DMI_IDs
4481 */
4482 while ((dev = dmi_find_device(DMI_DEV_TYPE_OEM_STRING, NULL, dev))) {
4483 if (sscanf(dev->name,
4484 "IBM ThinkPad Embedded Controller -[%17c",
4485 ec_fw_string) == 1) {
4486 ec_fw_string[sizeof(ec_fw_string) - 1] = 0;
4487 ec_fw_string[strcspn(ec_fw_string, " ]")] = 0;
d5a2f2f1
HMH		 4488
4489 tp->ec_version_str = kstrdup(ec_fw_string, GFP_KERNEL);
4490 tp->ec_model = ec_fw_string[0]
4491 | (ec_fw_string[1] << 8);
4492 break;
78f81cc4 4493 }
1da177e4 4494 }
d5a2f2f1
HMH		 4495
4496 tp->model_str = kstrdup(dmi_get_system_info(DMI_PRODUCT_VERSION),
4497 GFP_KERNEL);
4498 if (strnicmp(tp->model_str, "ThinkPad", 8) != 0) {
4499 kfree(tp->model_str);
4500 tp->model_str = NULL;
4501 }
1da177e4
LT		 4502}
4503
5fba344c
HMH		 4504static int __init probe_for_thinkpad(void)
4505{
4506 int is_thinkpad;
4507
4508 if (acpi_disabled)
4509 return -ENODEV;
4510
4511 /*
4512 * Non-ancient models have better DMI tagging, but very old models
4513 * don't.
4514 */
d5a2f2f1 4515 is_thinkpad = (thinkpad_id.model_str != NULL);
5fba344c
HMH		 4516
4517 /* ec is required because many other handles are relative to it */
8d376cd6 4518 IBM_ACPIHANDLE_INIT(ec);
5fba344c
HMH		 4519 if (!ec_handle) {
4520 if (is_thinkpad)
4521 printk(IBM_ERR
4522 "Not yet supported ThinkPad detected!\n");
4523 return -ENODEV;
4524 }
4525
0dcef77c
HMH		 4526 /*
4527 * Risks a regression on very old machines, but reduces potential
4528 * false positives a damn great deal
4529 */
4530 if (!is_thinkpad)
d5a2f2f1 4531 is_thinkpad = (thinkpad_id.vendor == PCI_VENDOR_ID_IBM);
0dcef77c
HMH		 4532
4533 if (!is_thinkpad && !force_load)
4534 return -ENODEV;
4535
5fba344c
HMH		 4536 return 0;
4537}
4538
4539
56b6aeb0 4540/* Module init, exit, parameters */
1da177e4 4541
a5763f22
HMH		 4542static struct ibm_init_struct ibms_init[] __initdata = {
4543 {
4544 .init = thinkpad_acpi_driver_init,
4545 .data = &thinkpad_acpi_driver_data,
4546 },
4547 {
4548 .init = hotkey_init,
4549 .data = &hotkey_driver_data,
4550 },
4551 {
4552 .init = bluetooth_init,
4553 .data = &bluetooth_driver_data,
4554 },
4555 {
4556 .init = wan_init,
4557 .data = &wan_driver_data,
4558 },
4559 {
4560 .init = video_init,
4561 .data = &video_driver_data,
4562 },
4563 {
4564 .init = light_init,
4565 .data = &light_driver_data,
4566 },
4567#ifdef CONFIG_THINKPAD_ACPI_DOCK
4568 {
4569 .init = dock_init,
4570 .data = &dock_driver_data[0],
4571 },
4572 {
d94a7f16 4573 .init = dock_init2,
a5763f22
HMH		 4574 .data = &dock_driver_data[1],
4575 },
4576#endif
4577#ifdef CONFIG_THINKPAD_ACPI_BAY
4578 {
4579 .init = bay_init,
4580 .data = &bay_driver_data,
4581 },
4582#endif
4583 {
4584 .init = cmos_init,
4585 .data = &cmos_driver_data,
4586 },
4587 {
4588 .init = led_init,
4589 .data = &led_driver_data,
4590 },
4591 {
4592 .init = beep_init,
4593 .data = &beep_driver_data,
4594 },
4595 {
4596 .init = thermal_init,
4597 .data = &thermal_driver_data,
4598 },
4599 {
4600 .data = &ecdump_driver_data,
4601 },
4602 {
4603 .init = brightness_init,
4604 .data = &brightness_driver_data,
4605 },
4606 {
4607 .data = &volume_driver_data,
4608 },
4609 {
4610 .init = fan_init,
4611 .data = &fan_driver_data,
4612 },
4613};
4614
3945ac36 4615static int __init set_ibm_param(const char *val, struct kernel_param *kp)
1da177e4
LT		 4616{
4617 unsigned int i;
a5763f22 4618 struct ibm_struct *ibm;
1da177e4 4619
a5763f22
HMH		 4620 for (i = 0; i < ARRAY_SIZE(ibms_init); i++) {
4621 ibm = ibms_init[i].data;
4622 BUG_ON(ibm == NULL);
4623
4624 if (strcmp(ibm->name, kp->name) == 0 && ibm->write) {
4625 if (strlen(val) > sizeof(ibms_init[i].param) - 2)
78f81cc4 4626 return -ENOSPC;
a5763f22
HMH		 4627 strcpy(ibms_init[i].param, val);
4628 strcat(ibms_init[i].param, ",");
78f81cc4
BD		 4629 return 0;
4630 }
a5763f22 4631 }
1da177e4 4632
1da177e4
LT		 4633 return -EINVAL;
4634}
4635
56b6aeb0
HMH		 4636static int experimental;
4637module_param(experimental, int, 0);
4638
132ce091
HMH		 4639static u32 dbg_level;
4640module_param_named(debug, dbg_level, uint, 0);
4641
0dcef77c 4642static int force_load;
86cc9445 4643module_param(force_load, bool, 0);
0dcef77c 4644
ecf2a80a 4645static int fan_control_allowed;
86cc9445 4646module_param_named(fan_control, fan_control_allowed, bool, 0);
ecf2a80a 4647
24d3b774
HMH		 4648static int brightness_mode;
4649module_param_named(brightness_mode, brightness_mode, int, 0);
4650
ff80f137
HMH		 4651static unsigned int hotkey_report_mode;
4652module_param(hotkey_report_mode, uint, 0);
4653
1da177e4
LT		 4654#define IBM_PARAM(feature) \
4655 module_param_call(feature, set_ibm_param, NULL, NULL, 0)
4656
78f81cc4
BD		 4657IBM_PARAM(hotkey);
4658IBM_PARAM(bluetooth);
4659IBM_PARAM(video);
4660IBM_PARAM(light);
85998248 4661#ifdef CONFIG_THINKPAD_ACPI_DOCK
78f81cc4 4662IBM_PARAM(dock);
63e5f248 4663#endif
85998248 4664#ifdef CONFIG_THINKPAD_ACPI_BAY
78f81cc4 4665IBM_PARAM(bay);
85998248 4666#endif /* CONFIG_THINKPAD_ACPI_BAY */
78f81cc4
BD		 4667IBM_PARAM(cmos);
4668IBM_PARAM(led);
4669IBM_PARAM(beep);
4670IBM_PARAM(ecdump);
4671IBM_PARAM(brightness);
4672IBM_PARAM(volume);
4673IBM_PARAM(fan);
4674
1def7115 4675static int __init thinkpad_acpi_module_init(void)
1da177e4
LT		 4676{
4677 int ret, i;
4678
ff80f137
HMH		 4679 /* Parameter checking */
4680 if (hotkey_report_mode > 2)
4681 return -EINVAL;
4682
54ae1501 4683 /* Driver-level probe */
d5a2f2f1
HMH		 4684
4685 get_thinkpad_model_data(&thinkpad_id);
5fba344c 4686 ret = probe_for_thinkpad();
d5a2f2f1
HMH		 4687 if (ret) {
4688 thinkpad_acpi_module_exit();
5fba344c 4689 return ret;
d5a2f2f1 4690 }
1da177e4 4691
54ae1501 4692 /* Driver initialization */
d5a2f2f1 4693
8d376cd6
HMH		 4694 IBM_ACPIHANDLE_INIT(ecrd);
4695 IBM_ACPIHANDLE_INIT(ecwr);
1da177e4 4696
8d376cd6 4697 proc_dir = proc_mkdir(IBM_PROC_DIR, acpi_root_dir);
1da177e4 4698 if (!proc_dir) {
8d376cd6 4699 printk(IBM_ERR "unable to create proc dir " IBM_PROC_DIR);
1def7115 4700 thinkpad_acpi_module_exit();
1da177e4
LT		 4701 return -ENODEV;
4702 }
4703 proc_dir->owner = THIS_MODULE;
78f81cc4 4704
54ae1501
HMH		 4705 ret = platform_driver_register(&tpacpi_pdriver);
4706 if (ret) {
4707 printk(IBM_ERR "unable to register platform driver\n");
4708 thinkpad_acpi_module_exit();
4709 return ret;
4710 }
ac36393d
HMH		 4711 tp_features.platform_drv_registered = 1;
4712
176750d6
HMH		 4713 ret = tpacpi_create_driver_attributes(&tpacpi_pdriver.driver);
4714 if (ret) {
4715 printk(IBM_ERR "unable to create sysfs driver attributes\n");
4716 thinkpad_acpi_module_exit();
4717 return ret;
4718 }
ac36393d 4719 tp_features.platform_drv_attrs_registered = 1;
176750d6 4720
54ae1501
HMH		 4721
4722 /* Device initialization */
4723 tpacpi_pdev = platform_device_register_simple(IBM_DRVR_NAME, -1,
4724 NULL, 0);
4725 if (IS_ERR(tpacpi_pdev)) {
4726 ret = PTR_ERR(tpacpi_pdev);
4727 tpacpi_pdev = NULL;
4728 printk(IBM_ERR "unable to register platform device\n");
4729 thinkpad_acpi_module_exit();
4730 return ret;
4731 }
4732 tpacpi_hwmon = hwmon_device_register(&tpacpi_pdev->dev);
4733 if (IS_ERR(tpacpi_hwmon)) {
4734 ret = PTR_ERR(tpacpi_hwmon);
4735 tpacpi_hwmon = NULL;
4736 printk(IBM_ERR "unable to register hwmon device\n");
4737 thinkpad_acpi_module_exit();
4738 return ret;
4739 }
7f5d1cd6
HMH		 4740 tpacpi_inputdev = input_allocate_device();
4741 if (!tpacpi_inputdev) {
4742 printk(IBM_ERR "unable to allocate input device\n");
4743 thinkpad_acpi_module_exit();
4744 return -ENOMEM;
4745 } else {
4746 /* Prepare input device, but don't register */
4747 tpacpi_inputdev->name = "ThinkPad Extra Buttons";
4748 tpacpi_inputdev->phys = IBM_DRVR_NAME "/input0";
4749 tpacpi_inputdev->id.bustype = BUS_HOST;
edf0e0e5
HMH		 4750 tpacpi_inputdev->id.vendor = (thinkpad_id.vendor) ?
4751 thinkpad_id.vendor :
4752 PCI_VENDOR_ID_IBM;
7f5d1cd6
HMH		 4753 tpacpi_inputdev->id.product = TPACPI_HKEY_INPUT_PRODUCT;
4754 tpacpi_inputdev->id.version = TPACPI_HKEY_INPUT_VERSION;
4755 }
a5763f22
HMH		 4756 for (i = 0; i < ARRAY_SIZE(ibms_init); i++) {
4757 ret = ibm_init(&ibms_init[i]);
4758 if (ret >= 0 && *ibms_init[i].param)
4759 ret = ibms_init[i].data->write(ibms_init[i].param);
1da177e4 4760 if (ret < 0) {
1def7115 4761 thinkpad_acpi_module_exit();
1da177e4
LT		 4762 return ret;
4763 }
4764 }
7f5d1cd6
HMH		 4765 ret = input_register_device(tpacpi_inputdev);
4766 if (ret < 0) {
4767 printk(IBM_ERR "unable to register input device\n");
4768 thinkpad_acpi_module_exit();
4769 return ret;
4770 } else {
4771 tp_features.input_device_registered = 1;
4772 }
1da177e4
LT		 4773
4774 return 0;
4775}
4776
1def7115 4777static void thinkpad_acpi_module_exit(void)
56b6aeb0 4778{
a5763f22
HMH		 4779 struct ibm_struct *ibm, *itmp;
4780
4781 list_for_each_entry_safe_reverse(ibm, itmp,
4782 &tpacpi_all_drivers,
4783 all_drivers) {
4784 ibm_exit(ibm);
4785 }
56b6aeb0 4786
a5763f22 4787 dbg_printk(TPACPI_DBG_INIT, "finished subdriver exit path...\n");
56b6aeb0 4788
7f5d1cd6
HMH		 4789 if (tpacpi_inputdev) {
4790 if (tp_features.input_device_registered)
4791 input_unregister_device(tpacpi_inputdev);
4792 else
4793 input_free_device(tpacpi_inputdev);
4794 }
4795
54ae1501
HMH		 4796 if (tpacpi_hwmon)
4797 hwmon_device_unregister(tpacpi_hwmon);
4798
4799 if (tpacpi_pdev)
4800 platform_device_unregister(tpacpi_pdev);
4801
ac36393d
HMH		 4802 if (tp_features.platform_drv_attrs_registered)
4803 tpacpi_remove_driver_attributes(&tpacpi_pdriver.driver);
4804
4805 if (tp_features.platform_drv_registered)
4806 platform_driver_unregister(&tpacpi_pdriver);
54ae1501 4807
56b6aeb0 4808 if (proc_dir)
8d376cd6 4809 remove_proc_entry(IBM_PROC_DIR, acpi_root_dir);
56b6aeb0 4810
d5a2f2f1
HMH		 4811 kfree(thinkpad_id.bios_version_str);
4812 kfree(thinkpad_id.ec_version_str);
4813 kfree(thinkpad_id.model_str);
56b6aeb0
HMH		 4814}
4815
1def7115
HMH		 4816module_init(thinkpad_acpi_module_init);
4817module_exit(thinkpad_acpi_module_exit);
Linux kernel - Deliverables
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