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ACPI: thinkpad-acpi: add sysfs support to hotkey subdriver
[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
643f12db 24#define IBM_VERSION "0.14"
176750d6 25#define TPACPI_SYSFS_VERSION 0x000100
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
1da177e4
LT		 95#define __unused __attribute__ ((unused))
96
56b6aeb0
HMH		 97/****************************************************************************
98 ****************************************************************************
99 *
100 * ACPI Helpers and device model
101 *
102 ****************************************************************************
103 ****************************************************************************/
104
105/*************************************************************************
106 * ACPI basic handles
107 */
1da177e4
LT		 108
109static acpi_handle root_handle = NULL;
110
111#define IBM_HANDLE(object, parent, paths...) \
112 static acpi_handle object##_handle; \
113 static acpi_handle *object##_parent = &parent##_handle; \
78f81cc4 114 static char *object##_path; \
1da177e4
LT		 115 static char *object##_paths[] = { paths }
116
78f81cc4
BD		 117IBM_HANDLE(ec, root, "\\_SB.PCI0.ISA.EC0", /* 240, 240x */
118 "\\_SB.PCI.ISA.EC", /* 570 */
119 "\\_SB.PCI0.ISA0.EC0", /* 600e/x, 770e, 770x */
120 "\\_SB.PCI0.ISA.EC", /* A21e, A2xm/p, T20-22, X20-21 */
121 "\\_SB.PCI0.AD4S.EC0", /* i1400, R30 */
122 "\\_SB.PCI0.ICH3.EC0", /* R31 */
123 "\\_SB.PCI0.LPC.EC", /* all others */
56b6aeb0 124 );
78f81cc4 125
56b6aeb0
HMH		 126IBM_HANDLE(ecrd, ec, "ECRD"); /* 570 */
127IBM_HANDLE(ecwr, ec, "ECWR"); /* 570 */
78f81cc4 128
56b6aeb0
HMH		 129
130/*************************************************************************
131 * Misc ACPI handles
132 */
78f81cc4
BD		 133
134IBM_HANDLE(cmos, root, "\\UCMS", /* R50, R50e, R50p, R51, T4x, X31, X40 */
135 "\\CMOS", /* A3x, G4x, R32, T23, T30, X22-24, X30 */
136 "\\CMS", /* R40, R40e */
56b6aeb0 137 ); /* all others */
78f81cc4
BD		 138
139IBM_HANDLE(hkey, ec, "\\_SB.HKEY", /* 600e/x, 770e, 770x */
140 "^HKEY", /* R30, R31 */
141 "HKEY", /* all others */
56b6aeb0 142 ); /* 570 */
78f81cc4 143
78f81cc4 144
56b6aeb0
HMH		 145/*************************************************************************
146 * ACPI helpers
a8b7a662
HMH		 147 */
148
1da177e4
LT		 149static int acpi_evalf(acpi_handle handle,
150 void *res, char *method, char *fmt, ...)
151{
152 char *fmt0 = fmt;
78f81cc4
BD		 153 struct acpi_object_list params;
154 union acpi_object in_objs[IBM_MAX_ACPI_ARGS];
155 struct acpi_buffer result, *resultp;
156 union acpi_object out_obj;
157 acpi_status status;
158 va_list ap;
159 char res_type;
160 int success;
161 int quiet;
1da177e4
LT		 162
163 if (!*fmt) {
164 printk(IBM_ERR "acpi_evalf() called with empty format\n");
165 return 0;
166 }
167
168 if (*fmt == 'q') {
169 quiet = 1;
170 fmt++;
171 } else
172 quiet = 0;
173
174 res_type = *(fmt++);
175
176 params.count = 0;
177 params.pointer = &in_objs[0];
178
179 va_start(ap, fmt);
180 while (*fmt) {
181 char c = *(fmt++);
182 switch (c) {
183 case 'd': /* int */
184 in_objs[params.count].integer.value = va_arg(ap, int);
185 in_objs[params.count++].type = ACPI_TYPE_INTEGER;
186 break;
78f81cc4 187 /* add more types as needed */
1da177e4
LT		 188 default:
189 printk(IBM_ERR "acpi_evalf() called "
190 "with invalid format character '%c'\n", c);
191 return 0;
192 }
193 }
194 va_end(ap);
195
78f81cc4
BD		 196 if (res_type != 'v') {
197 result.length = sizeof(out_obj);
198 result.pointer = &out_obj;
199 resultp = &result;
200 } else
201 resultp = NULL;
1da177e4 202
78f81cc4 203 status = acpi_evaluate_object(handle, method, &params, resultp);
1da177e4
LT		 204
205 switch (res_type) {
78f81cc4 206 case 'd': /* int */
1da177e4
LT		 207 if (res)
208 *(int *)res = out_obj.integer.value;
209 success = status == AE_OK && out_obj.type == ACPI_TYPE_INTEGER;
210 break;
78f81cc4 211 case 'v': /* void */
1da177e4
LT		 212 success = status == AE_OK;
213 break;
78f81cc4 214 /* add more types as needed */
1da177e4
LT		 215 default:
216 printk(IBM_ERR "acpi_evalf() called "
217 "with invalid format character '%c'\n", res_type);
218 return 0;
219 }
220
56b6aeb0
HMH		 221 if (!success && !quiet)
222 printk(IBM_ERR "acpi_evalf(%s, %s, ...) failed: %d\n",
223 method, fmt0, status);
224
225 return success;
226}
227
228static void __unused acpi_print_int(acpi_handle handle, char *method)
229{
230 int i;
231
232 if (acpi_evalf(handle, &i, method, "d"))
233 printk(IBM_INFO "%s = 0x%x\n", method, i);
234 else
235 printk(IBM_ERR "error calling %s\n", method);
236}
237
238static int acpi_ec_read(int i, u8 * p)
239{
240 int v;
241
242 if (ecrd_handle) {
243 if (!acpi_evalf(ecrd_handle, &v, NULL, "dd", i))
244 return 0;
245 *p = v;
246 } else {
247 if (ec_read(i, p) < 0)
248 return 0;
249 }
250
251 return 1;
252}
253
254static int acpi_ec_write(int i, u8 v)
255{
256 if (ecwr_handle) {
257 if (!acpi_evalf(ecwr_handle, NULL, NULL, "vdd", i, v))
258 return 0;
259 } else {
260 if (ec_write(i, v) < 0)
261 return 0;
262 }
263
264 return 1;
265}
266
267static int _sta(acpi_handle handle)
268{
269 int status;
270
271 if (!handle || !acpi_evalf(handle, &status, "_STA", "d"))
272 status = 0;
273
274 return status;
275}
276
c9bea99c
HMH		 277static int issue_thinkpad_cmos_command(int cmos_cmd)
278{
279 if (!cmos_handle)
280 return -ENXIO;
281
282 if (!acpi_evalf(cmos_handle, NULL, NULL, "vd", cmos_cmd))
283 return -EIO;
284
285 return 0;
286}
287
56b6aeb0
HMH		 288/*************************************************************************
289 * ACPI device model
290 */
291
8d376cd6 292static void drv_acpi_handle_init(char *name,
5fba344c
HMH		 293 acpi_handle *handle, acpi_handle parent,
294 char **paths, int num_paths, char **path)
56b6aeb0
HMH		 295{
296 int i;
297 acpi_status status;
298
5ae930e6
HMH		 299 vdbg_printk(TPACPI_DBG_INIT, "trying to locate ACPI handle for %s\n",
300 name);
301
56b6aeb0
HMH		 302 for (i = 0; i < num_paths; i++) {
303 status = acpi_get_handle(parent, paths[i], handle);
304 if (ACPI_SUCCESS(status)) {
305 *path = paths[i];
5ae930e6
HMH		 306 dbg_printk(TPACPI_DBG_INIT,
307 "Found ACPI handle %s for %s\n",
308 *path, name);
56b6aeb0
HMH		 309 return;
310 }
311 }
312
5ae930e6
HMH		 313 vdbg_printk(TPACPI_DBG_INIT, "ACPI handle for %s not found\n",
314 name);
56b6aeb0
HMH		 315 *handle = NULL;
316}
317
8d376cd6 318static void dispatch_acpi_notify(acpi_handle handle, u32 event, void *data)
56b6aeb0
HMH		 319{
320 struct ibm_struct *ibm = data;
321
8d376cd6 322 if (!ibm || !ibm->acpi || !ibm->acpi->notify)
56b6aeb0
HMH		 323 return;
324
8d376cd6 325 ibm->acpi->notify(ibm, event);
56b6aeb0
HMH		 326}
327
8d376cd6 328static int __init setup_acpi_notify(struct ibm_struct *ibm)
56b6aeb0
HMH		 329{
330 acpi_status status;
5ae930e6 331 int rc;
56b6aeb0 332
8d376cd6
HMH		 333 BUG_ON(!ibm->acpi);
334
335 if (!*ibm->acpi->handle)
56b6aeb0
HMH		 336 return 0;
337
5ae930e6 338 vdbg_printk(TPACPI_DBG_INIT,
fe08bc4b
HMH		 339 "setting up ACPI notify for %s\n", ibm->name);
340
5ae930e6
HMH		 341 rc = acpi_bus_get_device(*ibm->acpi->handle, &ibm->acpi->device);
342 if (rc < 0) {
343 printk(IBM_ERR "acpi_bus_get_device(%s) failed: %d\n",
344 ibm->name, rc);
56b6aeb0
HMH		 345 return -ENODEV;
346 }
347
8d376cd6
HMH		 348 acpi_driver_data(ibm->acpi->device) = ibm;
349 sprintf(acpi_device_class(ibm->acpi->device), "%s/%s",
643f12db
HMH		 350 IBM_ACPI_EVENT_PREFIX,
351 ibm->name);
56b6aeb0 352
8d376cd6
HMH		 353 status = acpi_install_notify_handler(*ibm->acpi->handle,
354 ibm->acpi->type, dispatch_acpi_notify, ibm);
56b6aeb0
HMH		 355 if (ACPI_FAILURE(status)) {
356 if (status == AE_ALREADY_EXISTS) {
357 printk(IBM_NOTICE "another device driver is already handling %s events\n",
358 ibm->name);
359 } else {
360 printk(IBM_ERR "acpi_install_notify_handler(%s) failed: %d\n",
361 ibm->name, status);
362 }
363 return -ENODEV;
364 }
8d376cd6 365 ibm->flags.acpi_notify_installed = 1;
56b6aeb0
HMH		 366 return 0;
367}
368
8d376cd6 369static int __init tpacpi_device_add(struct acpi_device *device)
56b6aeb0
HMH		 370{
371 return 0;
372}
373
6700121b 374static int __init register_tpacpi_subdriver(struct ibm_struct *ibm)
56b6aeb0 375{
5ae930e6 376 int rc;
56b6aeb0 377
fe08bc4b
HMH		 378 dbg_printk(TPACPI_DBG_INIT,
379 "registering %s as an ACPI driver\n", ibm->name);
380
8d376cd6
HMH		 381 BUG_ON(!ibm->acpi);
382
383 ibm->acpi->driver = kzalloc(sizeof(struct acpi_driver), GFP_KERNEL);
384 if (!ibm->acpi->driver) {
5fba344c
HMH		 385 printk(IBM_ERR "kzalloc(ibm->driver) failed\n");
386 return -ENOMEM;
56b6aeb0
HMH		 387 }
388
8d376cd6
HMH		 389 sprintf(ibm->acpi->driver->name, "%s_%s", IBM_NAME, ibm->name);
390 ibm->acpi->driver->ids = ibm->acpi->hid;
391 ibm->acpi->driver->ops.add = &tpacpi_device_add;
56b6aeb0 392
5ae930e6
HMH		 393 rc = acpi_bus_register_driver(ibm->acpi->driver);
394 if (rc < 0) {
56b6aeb0 395 printk(IBM_ERR "acpi_bus_register_driver(%s) failed: %d\n",
5ae930e6 396 ibm->acpi->hid, rc);
8d376cd6
HMH		 397 kfree(ibm->acpi->driver);
398 ibm->acpi->driver = NULL;
5ae930e6 399 } else if (!rc)
8d376cd6 400 ibm->flags.acpi_driver_registered = 1;
56b6aeb0 401
5ae930e6 402 return rc;
56b6aeb0
HMH		 403}
404
405
406/****************************************************************************
407 ****************************************************************************
408 *
409 * Procfs Helpers
410 *
411 ****************************************************************************
412 ****************************************************************************/
413
8d376cd6
HMH		 414static int dispatch_procfs_read(char *page, char **start, off_t off,
415 int count, int *eof, void *data)
56b6aeb0
HMH		 416{
417 struct ibm_struct *ibm = data;
418 int len;
419
420 if (!ibm || !ibm->read)
421 return -EINVAL;
422
423 len = ibm->read(page);
424 if (len < 0)
425 return len;
426
427 if (len <= off + count)
428 *eof = 1;
429 *start = page + off;
430 len -= off;
431 if (len > count)
432 len = count;
433 if (len < 0)
434 len = 0;
435
436 return len;
437}
438
8d376cd6
HMH		 439static int dispatch_procfs_write(struct file *file,
440 const char __user * userbuf,
441 unsigned long count, void *data)
56b6aeb0
HMH		 442{
443 struct ibm_struct *ibm = data;
444 char *kernbuf;
445 int ret;
446
447 if (!ibm || !ibm->write)
448 return -EINVAL;
449
450 kernbuf = kmalloc(count + 2, GFP_KERNEL);
451 if (!kernbuf)
452 return -ENOMEM;
1da177e4 453
56b6aeb0
HMH		 454 if (copy_from_user(kernbuf, userbuf, count)) {
455 kfree(kernbuf);
456 return -EFAULT;
457 }
1da177e4 458
56b6aeb0
HMH		 459 kernbuf[count] = 0;
460 strcat(kernbuf, ",");
461 ret = ibm->write(kernbuf);
462 if (ret == 0)
463 ret = count;
1da177e4 464
56b6aeb0
HMH		 465 kfree(kernbuf);
466
467 return ret;
1da177e4
LT		 468}
469
470static char *next_cmd(char **cmds)
471{
472 char *start = *cmds;
473 char *end;
474
475 while ((end = strchr(start, ',')) && end == start)
476 start = end + 1;
477
478 if (!end)
479 return NULL;
480
481 *end = 0;
482 *cmds = end + 1;
483 return start;
484}
485
56b6aeb0 486
54ae1501
HMH		 487/****************************************************************************
488 ****************************************************************************
489 *
490 * Device model: hwmon and platform
491 *
492 ****************************************************************************
493 ****************************************************************************/
494
495static struct platform_device *tpacpi_pdev = NULL;
496static struct class_device *tpacpi_hwmon = NULL;
497
498static struct platform_driver tpacpi_pdriver = {
499 .driver = {
500 .name = IBM_DRVR_NAME,
501 .owner = THIS_MODULE,
502 },
503};
504
505
176750d6
HMH		 506/*************************************************************************
507 * thinkpad-acpi driver attributes
508 */
509
510/* interface_version --------------------------------------------------- */
511static ssize_t tpacpi_driver_interface_version_show(
512 struct device_driver *drv,
513 char *buf)
514{
515 return snprintf(buf, PAGE_SIZE, "0x%08x\n", TPACPI_SYSFS_VERSION);
516}
517
518static DRIVER_ATTR(interface_version, S_IRUGO,
519 tpacpi_driver_interface_version_show, NULL);
520
521/* debug_level --------------------------------------------------------- */
522static ssize_t tpacpi_driver_debug_show(struct device_driver *drv,
523 char *buf)
524{
525 return snprintf(buf, PAGE_SIZE, "0x%04x\n", dbg_level);
526}
527
528static ssize_t tpacpi_driver_debug_store(struct device_driver *drv,
529 const char *buf, size_t count)
530{
531 unsigned long t;
176750d6 532
7252374a 533 if (parse_strtoul(buf, 0xffff, &t))
176750d6
HMH		 534 return -EINVAL;
535
536 dbg_level = t;
537
538 return count;
539}
540
541static DRIVER_ATTR(debug_level, S_IWUSR | S_IRUGO,
542 tpacpi_driver_debug_show, tpacpi_driver_debug_store);
543
544/* version ------------------------------------------------------------- */
545static ssize_t tpacpi_driver_version_show(struct device_driver *drv,
546 char *buf)
547{
548 return snprintf(buf, PAGE_SIZE, "%s v%s\n", IBM_DESC, IBM_VERSION);
549}
550
551static DRIVER_ATTR(version, S_IRUGO,
552 tpacpi_driver_version_show, NULL);
553
554/* --------------------------------------------------------------------- */
555
556static struct driver_attribute* tpacpi_driver_attributes[] = {
557 &driver_attr_debug_level, &driver_attr_version,
558 &driver_attr_interface_version,
559};
560
561static int __init tpacpi_create_driver_attributes(struct device_driver *drv)
562{
563 int i, res;
564
565 i = 0;
566 res = 0;
567 while (!res && i < ARRAY_SIZE(tpacpi_driver_attributes)) {
568 res = driver_create_file(drv, tpacpi_driver_attributes[i]);
569 i++;
570 }
571
572 return res;
573}
574
575static void tpacpi_remove_driver_attributes(struct device_driver *drv)
576{
577 int i;
578
579 for(i = 0; i < ARRAY_SIZE(tpacpi_driver_attributes); i++)
580 driver_remove_file(drv, tpacpi_driver_attributes[i]);
581}
582
7252374a
HMH		 583/*************************************************************************
584 * sysfs support helpers
585 */
586
587struct attribute_set_obj {
588 struct attribute_set s;
589 struct attribute *a;
590} __attribute__((packed));
591
592static struct attribute_set *create_attr_set(unsigned int max_members,
593 const char* name)
594{
595 struct attribute_set_obj *sobj;
596
597 if (max_members == 0)
598 return NULL;
599
600 /* Allocates space for implicit NULL at the end too */
601 sobj = kzalloc(sizeof(struct attribute_set_obj) +
602 max_members * sizeof(struct attribute *),
603 GFP_KERNEL);
604 if (!sobj)
605 return NULL;
606 sobj->s.max_members = max_members;
607 sobj->s.group.attrs = &sobj->a;
608 sobj->s.group.name = name;
609
610 return &sobj->s;
611}
612
613/* not multi-threaded safe, use it in a single thread per set */
614static int add_to_attr_set(struct attribute_set* s, struct attribute *attr)
615{
616 if (!s || !attr)
617 return -EINVAL;
618
619 if (s->members >= s->max_members)
620 return -ENOMEM;
621
622 s->group.attrs[s->members] = attr;
623 s->members++;
624
625 return 0;
626}
627
628static int add_many_to_attr_set(struct attribute_set* s,
629 struct attribute **attr,
630 unsigned int count)
631{
632 int i, res;
633
634 for (i = 0; i < count; i++) {
635 res = add_to_attr_set(s, attr[i]);
636 if (res)
637 return res;
638 }
639
640 return 0;
641}
642
643static void delete_attr_set(struct attribute_set* s, struct kobject *kobj)
644{
645 sysfs_remove_group(kobj, &s->group);
646 destroy_attr_set(s);
647}
648
649static int parse_strtoul(const char *buf,
650 unsigned long max, unsigned long *value)
651{
652 char *endp;
653
654 *value = simple_strtoul(buf, &endp, 0);
655 while (*endp && isspace(*endp))
656 endp++;
657 if (*endp || *value > max)
658 return -EINVAL;
659
660 return 0;
661}
662
56b6aeb0
HMH		 663/****************************************************************************
664 ****************************************************************************
665 *
666 * Subdrivers
667 *
668 ****************************************************************************
669 ****************************************************************************/
670
671/*************************************************************************
142cfc90 672 * thinkpad-acpi init subdriver
56b6aeb0
HMH		 673 */
674
a5763f22 675static int __init thinkpad_acpi_driver_init(struct ibm_init_struct *iibm)
1da177e4
LT		 676{
677 printk(IBM_INFO "%s v%s\n", IBM_DESC, IBM_VERSION);
678 printk(IBM_INFO "%s\n", IBM_URL);
679
3945ac36
HMH		 680 if (ibm_thinkpad_ec_found)
681 printk(IBM_INFO "ThinkPad EC firmware %s\n",
682 ibm_thinkpad_ec_found);
683
1da177e4
LT		 684 return 0;
685}
686
643f12db 687static int thinkpad_acpi_driver_read(char *p)
1da177e4
LT		 688{
689 int len = 0;
690
691 len += sprintf(p + len, "driver:\t\t%s\n", IBM_DESC);
692 len += sprintf(p + len, "version:\t%s\n", IBM_VERSION);
693
694 return len;
695}
696
a5763f22
HMH		 697static struct ibm_struct thinkpad_acpi_driver_data = {
698 .name = "driver",
699 .read = thinkpad_acpi_driver_read,
700};
701
56b6aeb0
HMH		 702/*************************************************************************
703 * Hotkey subdriver
704 */
705
78f81cc4
BD		 706static int hotkey_orig_status;
707static int hotkey_orig_mask;
708
a0416420
HMH		 709static struct attribute_set *hotkey_dev_attributes = NULL;
710
711/* sysfs hotkey enable ------------------------------------------------- */
712static ssize_t hotkey_enable_show(struct device *dev,
713 struct device_attribute *attr,
714 char *buf)
715{
716 int res, status, mask;
717
718 res = hotkey_get(&status, &mask);
719 if (res)
720 return res;
721
722 return snprintf(buf, PAGE_SIZE, "%d\n", status);
723}
724
725static ssize_t hotkey_enable_store(struct device *dev,
726 struct device_attribute *attr,
727 const char *buf, size_t count)
728{
729 unsigned long t;
730 int res, status, mask;
731
732 if (parse_strtoul(buf, 1, &t))
733 return -EINVAL;
734
735 res = hotkey_get(&status, &mask);
736 if (!res)
737 res = hotkey_set(t, mask);
738
739 return (res) ? res : count;
740}
741
742static struct device_attribute dev_attr_hotkey_enable =
743 __ATTR(enable, S_IWUSR | S_IRUGO,
744 hotkey_enable_show, hotkey_enable_store);
745
746/* sysfs hotkey mask --------------------------------------------------- */
747static ssize_t hotkey_mask_show(struct device *dev,
748 struct device_attribute *attr,
749 char *buf)
750{
751 int res, status, mask;
752
753 res = hotkey_get(&status, &mask);
754 if (res)
755 return res;
756
757 return snprintf(buf, PAGE_SIZE, "0x%04x\n", mask);
758}
759
760static ssize_t hotkey_mask_store(struct device *dev,
761 struct device_attribute *attr,
762 const char *buf, size_t count)
763{
764 unsigned long t;
765 int res, status, mask;
766
767 if (parse_strtoul(buf, 0xffff, &t))
768 return -EINVAL;
769
770 res = hotkey_get(&status, &mask);
771 if (!res)
772 hotkey_set(status, t);
773
774 return (res) ? res : count;
775}
776
777static struct device_attribute dev_attr_hotkey_mask =
778 __ATTR(mask, S_IWUSR | S_IRUGO,
779 hotkey_mask_show, hotkey_mask_store);
780
781/* sysfs hotkey bios_enabled ------------------------------------------- */
782static ssize_t hotkey_bios_enabled_show(struct device *dev,
783 struct device_attribute *attr,
784 char *buf)
785{
786 return snprintf(buf, PAGE_SIZE, "%d\n", hotkey_orig_status);
787}
788
789static struct device_attribute dev_attr_hotkey_bios_enabled =
790 __ATTR(bios_enabled, S_IRUGO, hotkey_bios_enabled_show, NULL);
791
792/* sysfs hotkey bios_mask ---------------------------------------------- */
793static ssize_t hotkey_bios_mask_show(struct device *dev,
794 struct device_attribute *attr,
795 char *buf)
796{
797 return snprintf(buf, PAGE_SIZE, "0x%04x\n", hotkey_orig_mask);
798}
799
800static struct device_attribute dev_attr_hotkey_bios_mask =
801 __ATTR(bios_mask, S_IRUGO, hotkey_bios_mask_show, NULL);
802
803/* --------------------------------------------------------------------- */
804
805static struct attribute *hotkey_mask_attributes[] = {
806 &dev_attr_hotkey_mask.attr,
807 &dev_attr_hotkey_bios_enabled.attr,
808 &dev_attr_hotkey_bios_mask.attr,
809};
810
a5763f22 811static int __init hotkey_init(struct ibm_init_struct *iibm)
56b6aeb0 812{
b86c4722
HMH		 813 int res;
814
fe08bc4b
HMH		 815 vdbg_printk(TPACPI_DBG_INIT, "initializing hotkey subdriver\n");
816
8d376cd6 817 IBM_ACPIHANDLE_INIT(hkey);
40ca9fdf 818 mutex_init(&hotkey_mutex);
5fba344c 819
56b6aeb0 820 /* hotkey not supported on 570 */
d8fd94d9 821 tp_features.hotkey = hkey_handle != NULL;
56b6aeb0 822
fe08bc4b 823 vdbg_printk(TPACPI_DBG_INIT, "hotkeys are %s\n",
d8fd94d9 824 str_supported(tp_features.hotkey));
fe08bc4b 825
d8fd94d9 826 if (tp_features.hotkey) {
a0416420
HMH		 827 hotkey_dev_attributes = create_attr_set(4,
828 TPACPI_HOTKEY_SYSFS_GROUP);
829 if (!hotkey_dev_attributes)
830 return -ENOMEM;
831 res = add_to_attr_set(hotkey_dev_attributes,
832 &dev_attr_hotkey_enable.attr);
833 if (res)
834 return res;
835
56b6aeb0
HMH		 836 /* mask not supported on 570, 600e/x, 770e, 770x, A21e, A2xm/p,
837 A30, R30, R31, T20-22, X20-21, X22-24 */
d8fd94d9
HMH		 838 tp_features.hotkey_mask =
839 acpi_evalf(hkey_handle, NULL, "DHKN", "qv");
56b6aeb0 840
fe08bc4b 841 vdbg_printk(TPACPI_DBG_INIT, "hotkey masks are %s\n",
d8fd94d9 842 str_supported(tp_features.hotkey_mask));
fe08bc4b 843
b86c4722 844 res = hotkey_get(&hotkey_orig_status, &hotkey_orig_mask);
a0416420
HMH		 845 if (!res && tp_features.hotkey_mask) {
846 res = add_many_to_attr_set(hotkey_dev_attributes,
847 hotkey_mask_attributes,
848 ARRAY_SIZE(hotkey_mask_attributes));
849 }
850 if (!res)
851 res = register_attr_set_with_sysfs(
852 hotkey_dev_attributes,
853 &tpacpi_pdev->dev.kobj);
854
b86c4722
HMH		 855 if (res)
856 return res;
56b6aeb0
HMH		 857 }
858
d8fd94d9 859 return (tp_features.hotkey)? 0 : 1;
56b6aeb0
HMH		 860}
861
862static void hotkey_exit(void)
863{
b86c4722
HMH		 864 int res;
865
d8fd94d9 866 if (tp_features.hotkey) {
fe08bc4b 867 dbg_printk(TPACPI_DBG_EXIT, "restoring original hotkey mask\n");
b86c4722
HMH		 868 res = hotkey_set(hotkey_orig_status, hotkey_orig_mask);
869 if (res)
870 printk(IBM_ERR "failed to restore hotkey to BIOS defaults\n");
5fba344c 871 }
a0416420
HMH		 872
873 if (hotkey_dev_attributes) {
874 delete_attr_set(hotkey_dev_attributes, &tpacpi_pdev->dev.kobj);
875 hotkey_dev_attributes = NULL;
876 }
56b6aeb0
HMH		 877}
878
879static void hotkey_notify(struct ibm_struct *ibm, u32 event)
880{
881 int hkey;
882
883 if (acpi_evalf(hkey_handle, &hkey, "MHKP", "d"))
8d376cd6 884 acpi_bus_generate_event(ibm->acpi->device, event, hkey);
56b6aeb0
HMH		 885 else {
886 printk(IBM_ERR "unknown hotkey event %d\n", event);
8d376cd6 887 acpi_bus_generate_event(ibm->acpi->device, event, 0);
56b6aeb0
HMH		 888 }
889}
890
40ca9fdf
HMH		 891/*
892 * Call with hotkey_mutex held
893 */
78f81cc4 894static int hotkey_get(int *status, int *mask)
1da177e4
LT		 895{
896 if (!acpi_evalf(hkey_handle, status, "DHKC", "d"))
b86c4722 897 return -EIO;
78f81cc4 898
d8fd94d9 899 if (tp_features.hotkey_mask)
78f81cc4 900 if (!acpi_evalf(hkey_handle, mask, "DHKN", "d"))
b86c4722 901 return -EIO;
78f81cc4 902
b86c4722 903 return 0;
1da177e4
LT		 904}
905
40ca9fdf
HMH		 906/*
907 * Call with hotkey_mutex held
908 */
78f81cc4 909static int hotkey_set(int status, int mask)
1da177e4
LT		 910{
911 int i;
912
913 if (!acpi_evalf(hkey_handle, NULL, "MHKC", "vd", status))
b86c4722 914 return -EIO;
1da177e4 915
d8fd94d9 916 if (tp_features.hotkey_mask)
78f81cc4
BD		 917 for (i = 0; i < 32; i++) {
918 int bit = ((1 << i) & mask) != 0;
919 if (!acpi_evalf(hkey_handle,
920 NULL, "MHKM", "vdd", i + 1, bit))
b86c4722 921 return -EIO;
78f81cc4 922 }
1da177e4 923
b86c4722 924 return 0;
1da177e4
LT		 925}
926
a0416420 927/* procfs -------------------------------------------------------------- */
78f81cc4 928static int hotkey_read(char *p)
1da177e4 929{
b86c4722 930 int res, status, mask;
1da177e4
LT		 931 int len = 0;
932
d8fd94d9 933 if (!tp_features.hotkey) {
78f81cc4
BD		 934 len += sprintf(p + len, "status:\t\tnot supported\n");
935 return len;
936 }
937
40ca9fdf
HMH		 938 res = mutex_lock_interruptible(&hotkey_mutex);
939 if (res < 0)
940 return res;
b86c4722 941 res = hotkey_get(&status, &mask);
40ca9fdf 942 mutex_unlock(&hotkey_mutex);
b86c4722
HMH		 943 if (res)
944 return res;
1da177e4
LT		 945
946 len += sprintf(p + len, "status:\t\t%s\n", enabled(status, 0));
d8fd94d9 947 if (tp_features.hotkey_mask) {
1da177e4
LT		 948 len += sprintf(p + len, "mask:\t\t0x%04x\n", mask);
949 len += sprintf(p + len,
950 "commands:\tenable, disable, reset, <mask>\n");
951 } else {
952 len += sprintf(p + len, "mask:\t\tnot supported\n");
953 len += sprintf(p + len, "commands:\tenable, disable, reset\n");
954 }
955
956 return len;
957}
958
78f81cc4 959static int hotkey_write(char *buf)
1da177e4 960{
b86c4722 961 int res, status, mask;
1da177e4
LT		 962 char *cmd;
963 int do_cmd = 0;
964
d8fd94d9 965 if (!tp_features.hotkey)
1da177e4
LT		 966 return -ENODEV;
967
40ca9fdf
HMH		 968 res = mutex_lock_interruptible(&hotkey_mutex);
969 if (res < 0)
970 return res;
971
b86c4722
HMH		 972 res = hotkey_get(&status, &mask);
973 if (res)
40ca9fdf 974 goto errexit;
78f81cc4 975
40ca9fdf 976 res = 0;
1da177e4
LT		 977 while ((cmd = next_cmd(&buf))) {
978 if (strlencmp(cmd, "enable") == 0) {
979 status = 1;
980 } else if (strlencmp(cmd, "disable") == 0) {
981 status = 0;
982 } else if (strlencmp(cmd, "reset") == 0) {
78f81cc4
BD		 983 status = hotkey_orig_status;
984 mask = hotkey_orig_mask;
1da177e4
LT		 985 } else if (sscanf(cmd, "0x%x", &mask) == 1) {
986 /* mask set */
987 } else if (sscanf(cmd, "%x", &mask) == 1) {
988 /* mask set */
40ca9fdf
HMH		 989 } else {
990 res = -EINVAL;
991 goto errexit;
992 }
1da177e4
LT		 993 do_cmd = 1;
994 }
995
40ca9fdf 996 if (do_cmd)
b86c4722 997 res = hotkey_set(status, mask);
1da177e4 998
40ca9fdf
HMH		 999errexit:
1000 mutex_unlock(&hotkey_mutex);
1001 return res;
78f81cc4 1002}
1da177e4 1003
8d376cd6
HMH		 1004static struct tp_acpi_drv_struct ibm_hotkey_acpidriver = {
1005 .hid = IBM_HKEY_HID,
1006 .notify = hotkey_notify,
1007 .handle = &hkey_handle,
1008 .type = ACPI_DEVICE_NOTIFY,
1009};
1010
a5763f22
HMH		 1011static struct ibm_struct hotkey_driver_data = {
1012 .name = "hotkey",
a5763f22
HMH		 1013 .read = hotkey_read,
1014 .write = hotkey_write,
1015 .exit = hotkey_exit,
8d376cd6 1016 .acpi = &ibm_hotkey_acpidriver,
a5763f22
HMH		 1017};
1018
56b6aeb0
HMH		 1019/*************************************************************************
1020 * Bluetooth subdriver
1021 */
1da177e4 1022
a5763f22 1023static int __init bluetooth_init(struct ibm_init_struct *iibm)
1da177e4 1024{
d6fdd1e9
HMH		 1025 int status = 0;
1026
fe08bc4b
HMH		 1027 vdbg_printk(TPACPI_DBG_INIT, "initializing bluetooth subdriver\n");
1028
8d376cd6 1029 IBM_ACPIHANDLE_INIT(hkey);
5fba344c 1030
78f81cc4
BD		 1031 /* bluetooth not supported on 570, 600e/x, 770e, 770x, A21e, A2xm/p,
1032 G4x, R30, R31, R40e, R50e, T20-22, X20-21 */
d8fd94d9 1033 tp_features.bluetooth = hkey_handle &&
d6fdd1e9
HMH		 1034 acpi_evalf(hkey_handle, &status, "GBDC", "qd");
1035
1036 vdbg_printk(TPACPI_DBG_INIT, "bluetooth is %s, status 0x%02x\n",
1037 str_supported(tp_features.bluetooth),
1038 status);
1039
1040 if (tp_features.bluetooth &&
1041 !(status & TP_ACPI_BLUETOOTH_HWPRESENT)) {
1042 /* no bluetooth hardware present in system */
1043 tp_features.bluetooth = 0;
1044 dbg_printk(TPACPI_DBG_INIT,
1045 "bluetooth hardware not installed\n");
1046 }
fe08bc4b 1047
d8fd94d9 1048 return (tp_features.bluetooth)? 0 : 1;
1da177e4
LT		 1049}
1050
d6fdd1e9 1051static int bluetooth_get_radiosw(void)
1da177e4
LT		 1052{
1053 int status;
1054
d6fdd1e9
HMH		 1055 if (!tp_features.bluetooth)
1056 return -ENODEV;
1da177e4 1057
d6fdd1e9
HMH		 1058 if (!acpi_evalf(hkey_handle, &status, "GBDC", "d"))
1059 return -EIO;
1060
1061 return ((status & TP_ACPI_BLUETOOTH_RADIOSSW) != 0);
1062}
1063
1064static int bluetooth_set_radiosw(int radio_on)
1065{
1066 int status;
1067
1068 if (!tp_features.bluetooth)
1069 return -ENODEV;
1070
1071 if (!acpi_evalf(hkey_handle, &status, "GBDC", "d"))
1072 return -EIO;
1073 if (radio_on)
1074 status |= TP_ACPI_BLUETOOTH_RADIOSSW;
1075 else
1076 status &= ~TP_ACPI_BLUETOOTH_RADIOSSW;
1077 if (!acpi_evalf(hkey_handle, NULL, "SBDC", "vd", status))
1078 return -EIO;
1079
1080 return 0;
1da177e4
LT		 1081}
1082
78f81cc4 1083static int bluetooth_read(char *p)
1da177e4
LT		 1084{
1085 int len = 0;
d6fdd1e9 1086 int status = bluetooth_get_radiosw();
1da177e4 1087
d8fd94d9 1088 if (!tp_features.bluetooth)
1da177e4 1089 len += sprintf(p + len, "status:\t\tnot supported\n");
1da177e4 1090 else {
d6fdd1e9
HMH		 1091 len += sprintf(p + len, "status:\t\t%s\n",
1092 (status)? "enabled" : "disabled");
1da177e4
LT		 1093 len += sprintf(p + len, "commands:\tenable, disable\n");
1094 }
1095
1096 return len;
1097}
1098
78f81cc4 1099static int bluetooth_write(char *buf)
1da177e4 1100{
1da177e4 1101 char *cmd;
1da177e4 1102
d8fd94d9 1103 if (!tp_features.bluetooth)
78f81cc4 1104 return -ENODEV;
1da177e4
LT		 1105
1106 while ((cmd = next_cmd(&buf))) {
1107 if (strlencmp(cmd, "enable") == 0) {
d6fdd1e9 1108 bluetooth_set_radiosw(1);
1da177e4 1109 } else if (strlencmp(cmd, "disable") == 0) {
d6fdd1e9 1110 bluetooth_set_radiosw(0);
1da177e4
LT		 1111 } else
1112 return -EINVAL;
1da177e4
LT		 1113 }
1114
1da177e4
LT		 1115 return 0;
1116}
1117
a5763f22
HMH		 1118static struct ibm_struct bluetooth_driver_data = {
1119 .name = "bluetooth",
1120 .read = bluetooth_read,
1121 .write = bluetooth_write,
1122};
1123
56b6aeb0
HMH		 1124/*************************************************************************
1125 * Wan subdriver
1126 */
1127
a5763f22 1128static int __init wan_init(struct ibm_init_struct *iibm)
42adb53c 1129{
d6fdd1e9
HMH		 1130 int status = 0;
1131
fe08bc4b
HMH		 1132 vdbg_printk(TPACPI_DBG_INIT, "initializing wan subdriver\n");
1133
8d376cd6 1134 IBM_ACPIHANDLE_INIT(hkey);
5fba344c 1135
d8fd94d9 1136 tp_features.wan = hkey_handle &&
d6fdd1e9
HMH		 1137 acpi_evalf(hkey_handle, &status, "GWAN", "qd");
1138
1139 vdbg_printk(TPACPI_DBG_INIT, "wan is %s, status 0x%02x\n",
1140 str_supported(tp_features.wan),
1141 status);
1142
1143 if (tp_features.wan &&
1144 !(status & TP_ACPI_WANCARD_HWPRESENT)) {
1145 /* no wan hardware present in system */
1146 tp_features.wan = 0;
1147 dbg_printk(TPACPI_DBG_INIT,
1148 "wan hardware not installed\n");
1149 }
fe08bc4b 1150
d8fd94d9 1151 return (tp_features.wan)? 0 : 1;
42adb53c
JF		 1152}
1153
d6fdd1e9 1154static int wan_get_radiosw(void)
42adb53c
JF		 1155{
1156 int status;
1157
d6fdd1e9
HMH		 1158 if (!tp_features.wan)
1159 return -ENODEV;
42adb53c 1160
d6fdd1e9
HMH		 1161 if (!acpi_evalf(hkey_handle, &status, "GWAN", "d"))
1162 return -EIO;
1163
1164 return ((status & TP_ACPI_WANCARD_RADIOSSW) != 0);
1165}
1166
1167static int wan_set_radiosw(int radio_on)
1168{
1169 int status;
1170
1171 if (!tp_features.wan)
1172 return -ENODEV;
1173
1174 if (!acpi_evalf(hkey_handle, &status, "GWAN", "d"))
1175 return -EIO;
1176 if (radio_on)
1177 status |= TP_ACPI_WANCARD_RADIOSSW;
1178 else
1179 status &= ~TP_ACPI_WANCARD_RADIOSSW;
1180 if (!acpi_evalf(hkey_handle, NULL, "SWAN", "vd", status))
1181 return -EIO;
1182
1183 return 0;
42adb53c
JF		 1184}
1185
1186static int wan_read(char *p)
1187{
1188 int len = 0;
d6fdd1e9 1189 int status = wan_get_radiosw();
42adb53c 1190
d8fd94d9 1191 if (!tp_features.wan)
42adb53c 1192 len += sprintf(p + len, "status:\t\tnot supported\n");
42adb53c 1193 else {
d6fdd1e9
HMH		 1194 len += sprintf(p + len, "status:\t\t%s\n",
1195 (status)? "enabled" : "disabled");
42adb53c
JF		 1196 len += sprintf(p + len, "commands:\tenable, disable\n");
1197 }
1198
1199 return len;
1200}
1201
1202static int wan_write(char *buf)
1203{
42adb53c 1204 char *cmd;
42adb53c 1205
d8fd94d9 1206 if (!tp_features.wan)
42adb53c
JF		 1207 return -ENODEV;
1208
1209 while ((cmd = next_cmd(&buf))) {
1210 if (strlencmp(cmd, "enable") == 0) {
d6fdd1e9 1211 wan_set_radiosw(1);
42adb53c 1212 } else if (strlencmp(cmd, "disable") == 0) {
d6fdd1e9 1213 wan_set_radiosw(0);
42adb53c
JF		 1214 } else
1215 return -EINVAL;
42adb53c
JF		 1216 }
1217
42adb53c
JF		 1218 return 0;
1219}
1220
a5763f22
HMH		 1221static struct ibm_struct wan_driver_data = {
1222 .name = "wan",
1223 .read = wan_read,
1224 .write = wan_write,
92641177 1225 .flags.experimental = 1,
a5763f22
HMH		 1226};
1227
56b6aeb0
HMH		 1228/*************************************************************************
1229 * Video subdriver
1230 */
1231
9a8e1738
HMH		 1232static enum video_access_mode video_supported;
1233static int video_orig_autosw;
78f81cc4 1234
56b6aeb0
HMH		 1235IBM_HANDLE(vid, root, "\\_SB.PCI.AGP.VGA", /* 570 */
1236 "\\_SB.PCI0.AGP0.VID0", /* 600e/x, 770x */
1237 "\\_SB.PCI0.VID0", /* 770e */
1238 "\\_SB.PCI0.VID", /* A21e, G4x, R50e, X30, X40 */
1239 "\\_SB.PCI0.AGP.VID", /* all others */
1240 ); /* R30, R31 */
1241
1242IBM_HANDLE(vid2, root, "\\_SB.PCI0.AGPB.VID"); /* G41 */
1243
a5763f22 1244static int __init video_init(struct ibm_init_struct *iibm)
1da177e4 1245{
78f81cc4
BD		 1246 int ivga;
1247
fe08bc4b
HMH		 1248 vdbg_printk(TPACPI_DBG_INIT, "initializing video subdriver\n");
1249
8d376cd6
HMH		 1250 IBM_ACPIHANDLE_INIT(vid);
1251 IBM_ACPIHANDLE_INIT(vid2);
5fba344c 1252
78f81cc4
BD		 1253 if (vid2_handle && acpi_evalf(NULL, &ivga, "\\IVGA", "d") && ivga)
1254 /* G41, assume IVGA doesn't change */
1255 vid_handle = vid2_handle;
1256
1257 if (!vid_handle)
1258 /* video switching not supported on R30, R31 */
efa27145 1259 video_supported = TPACPI_VIDEO_NONE;
78f81cc4
BD		 1260 else if (acpi_evalf(vid_handle, &video_orig_autosw, "SWIT", "qd"))
1261 /* 570 */
efa27145 1262 video_supported = TPACPI_VIDEO_570;
78f81cc4
BD		 1263 else if (acpi_evalf(vid_handle, &video_orig_autosw, "^VADL", "qd"))
1264 /* 600e/x, 770e, 770x */
efa27145 1265 video_supported = TPACPI_VIDEO_770;
78f81cc4
BD		 1266 else
1267 /* all others */
efa27145 1268 video_supported = TPACPI_VIDEO_NEW;
1da177e4 1269
fe08bc4b
HMH		 1270 vdbg_printk(TPACPI_DBG_INIT, "video is %s, mode %d\n",
1271 str_supported(video_supported != TPACPI_VIDEO_NONE),
1272 video_supported);
1273
5fba344c 1274 return (video_supported != TPACPI_VIDEO_NONE)? 0 : 1;
1da177e4
LT		 1275}
1276
56b6aeb0
HMH		 1277static void video_exit(void)
1278{
83f34724
HMH		 1279 dbg_printk(TPACPI_DBG_EXIT,
1280 "restoring original video autoswitch mode\n");
1281 if (video_autosw_set(video_orig_autosw))
1282 printk(IBM_ERR "error while trying to restore original "
1283 "video autoswitch mode\n");
56b6aeb0
HMH		 1284}
1285
83f34724 1286static int video_outputsw_get(void)
1da177e4
LT		 1287{
1288 int status = 0;
1289 int i;
1290
83f34724
HMH		 1291 switch (video_supported) {
1292 case TPACPI_VIDEO_570:
1293 if (!acpi_evalf(NULL, &i, "\\_SB.PHS", "dd",
1294 TP_ACPI_VIDEO_570_PHSCMD))
1295 return -EIO;
1296 status = i & TP_ACPI_VIDEO_570_PHSMASK;
1297 break;
1298 case TPACPI_VIDEO_770:
1299 if (!acpi_evalf(NULL, &i, "\\VCDL", "d"))
1300 return -EIO;
1301 if (i)
1302 status |= TP_ACPI_VIDEO_S_LCD;
1303 if (!acpi_evalf(NULL, &i, "\\VCDC", "d"))
1304 return -EIO;
1305 if (i)
1306 status |= TP_ACPI_VIDEO_S_CRT;
1307 break;
1308 case TPACPI_VIDEO_NEW:
1309 if (!acpi_evalf(NULL, NULL, "\\VUPS", "vd", 1) ||
1310 !acpi_evalf(NULL, &i, "\\VCDC", "d"))
1311 return -EIO;
1312 if (i)
1313 status |= TP_ACPI_VIDEO_S_CRT;
1314
1315 if (!acpi_evalf(NULL, NULL, "\\VUPS", "vd", 0) ||
1316 !acpi_evalf(NULL, &i, "\\VCDL", "d"))
1317 return -EIO;
1318 if (i)
1319 status |= TP_ACPI_VIDEO_S_LCD;
1320 if (!acpi_evalf(NULL, &i, "\\VCDD", "d"))
1321 return -EIO;
1322 if (i)
1323 status |= TP_ACPI_VIDEO_S_DVI;
1324 break;
1325 default:
1326 return -ENOSYS;
78f81cc4
BD		 1327 }
1328
1329 return status;
1330}
1da177e4 1331
83f34724 1332static int video_outputsw_set(int status)
78f81cc4 1333{
83f34724
HMH		 1334 int autosw;
1335 int res = 0;
1336
1337 switch (video_supported) {
1338 case TPACPI_VIDEO_570:
1339 res = acpi_evalf(NULL, NULL,
1340 "\\_SB.PHS2", "vdd",
1341 TP_ACPI_VIDEO_570_PHS2CMD,
1342 status | TP_ACPI_VIDEO_570_PHS2SET);
1343 break;
1344 case TPACPI_VIDEO_770:
1345 autosw = video_autosw_get();
1346 if (autosw < 0)
1347 return autosw;
1da177e4 1348
83f34724
HMH		 1349 res = video_autosw_set(1);
1350 if (res)
1351 return res;
1352 res = acpi_evalf(vid_handle, NULL,
1353 "ASWT", "vdd", status * 0x100, 0);
1354 if (!autosw && video_autosw_set(autosw)) {
1355 printk(IBM_ERR "video auto-switch left enabled due to error\n");
1356 return -EIO;
1357 }
1358 break;
1359 case TPACPI_VIDEO_NEW:
1360 res = acpi_evalf(NULL, NULL, "\\VUPS", "vd", 0x80) &&
1361 acpi_evalf(NULL, NULL, "\\VSDS", "vdd", status, 1);
1362 break;
1363 default:
1364 return -ENOSYS;
1365 }
1da177e4 1366
83f34724 1367 return (res)? 0 : -EIO;
1da177e4
LT		 1368}
1369
83f34724 1370static int video_autosw_get(void)
78f81cc4 1371{
83f34724 1372 int autosw = 0;
78f81cc4 1373
83f34724
HMH		 1374 switch (video_supported) {
1375 case TPACPI_VIDEO_570:
1376 if (!acpi_evalf(vid_handle, &autosw, "SWIT", "d"))
1377 return -EIO;
1378 break;
1379 case TPACPI_VIDEO_770:
1380 case TPACPI_VIDEO_NEW:
1381 if (!acpi_evalf(vid_handle, &autosw, "^VDEE", "d"))
1382 return -EIO;
1383 break;
1384 default:
1385 return -ENOSYS;
1386 }
78f81cc4 1387
83f34724 1388 return autosw & 1;
78f81cc4
BD		 1389}
1390
83f34724 1391static int video_autosw_set(int enable)
78f81cc4 1392{
83f34724
HMH		 1393 if (!acpi_evalf(vid_handle, NULL, "_DOS", "vd", (enable)? 1 : 0))
1394 return -EIO;
1395 return 0;
78f81cc4
BD		 1396}
1397
83f34724 1398static int video_outputsw_cycle(void)
78f81cc4 1399{
83f34724
HMH		 1400 int autosw = video_autosw_get();
1401 int res;
78f81cc4 1402
83f34724
HMH		 1403 if (autosw < 0)
1404 return autosw;
78f81cc4 1405
83f34724
HMH		 1406 switch (video_supported) {
1407 case TPACPI_VIDEO_570:
1408 res = video_autosw_set(1);
1409 if (res)
1410 return res;
1411 res = acpi_evalf(ec_handle, NULL, "_Q16", "v");
1412 break;
1413 case TPACPI_VIDEO_770:
1414 case TPACPI_VIDEO_NEW:
1415 res = video_autosw_set(1);
1416 if (res)
1417 return res;
1418 res = acpi_evalf(vid_handle, NULL, "VSWT", "v");
1419 break;
1420 default:
1421 return -ENOSYS;
1422 }
1423 if (!autosw && video_autosw_set(autosw)) {
1424 printk(IBM_ERR "video auto-switch left enabled due to error\n");
1425 return -EIO;
78f81cc4
BD		 1426 }
1427
83f34724
HMH		 1428 return (res)? 0 : -EIO;
1429}
1430
1431static int video_expand_toggle(void)
1432{
1433 switch (video_supported) {
1434 case TPACPI_VIDEO_570:
1435 return acpi_evalf(ec_handle, NULL, "_Q17", "v")?
1436 0 : -EIO;
1437 case TPACPI_VIDEO_770:
1438 return acpi_evalf(vid_handle, NULL, "VEXP", "v")?
1439 0 : -EIO;
1440 case TPACPI_VIDEO_NEW:
1441 return acpi_evalf(NULL, NULL, "\\VEXP", "v")?
1442 0 : -EIO;
1443 default:
1444 return -ENOSYS;
1445 }
1446 /* not reached */
78f81cc4
BD		 1447}
1448
56b6aeb0
HMH		 1449static int video_read(char *p)
1450{
83f34724 1451 int status, autosw;
56b6aeb0
HMH		 1452 int len = 0;
1453
83f34724 1454 if (video_supported == TPACPI_VIDEO_NONE) {
56b6aeb0
HMH		 1455 len += sprintf(p + len, "status:\t\tnot supported\n");
1456 return len;
1457 }
1458
83f34724
HMH		 1459 status = video_outputsw_get();
1460 if (status < 0)
1461 return status;
1462
1463 autosw = video_autosw_get();
1464 if (autosw < 0)
1465 return autosw;
1466
56b6aeb0
HMH		 1467 len += sprintf(p + len, "status:\t\tsupported\n");
1468 len += sprintf(p + len, "lcd:\t\t%s\n", enabled(status, 0));
1469 len += sprintf(p + len, "crt:\t\t%s\n", enabled(status, 1));
efa27145 1470 if (video_supported == TPACPI_VIDEO_NEW)
56b6aeb0
HMH		 1471 len += sprintf(p + len, "dvi:\t\t%s\n", enabled(status, 3));
1472 len += sprintf(p + len, "auto:\t\t%s\n", enabled(autosw, 0));
1473 len += sprintf(p + len, "commands:\tlcd_enable, lcd_disable\n");
1474 len += sprintf(p + len, "commands:\tcrt_enable, crt_disable\n");
efa27145 1475 if (video_supported == TPACPI_VIDEO_NEW)
56b6aeb0
HMH		 1476 len += sprintf(p + len, "commands:\tdvi_enable, dvi_disable\n");
1477 len += sprintf(p + len, "commands:\tauto_enable, auto_disable\n");
1478 len += sprintf(p + len, "commands:\tvideo_switch, expand_toggle\n");
1479
1480 return len;
1481}
1482
78f81cc4 1483static int video_write(char *buf)
1da177e4
LT		 1484{
1485 char *cmd;
1486 int enable, disable, status;
83f34724 1487 int res;
1da177e4 1488
83f34724 1489 if (video_supported == TPACPI_VIDEO_NONE)
78f81cc4
BD		 1490 return -ENODEV;
1491
83f34724
HMH		 1492 enable = 0;
1493 disable = 0;
1da177e4
LT		 1494
1495 while ((cmd = next_cmd(&buf))) {
1496 if (strlencmp(cmd, "lcd_enable") == 0) {
83f34724 1497 enable |= TP_ACPI_VIDEO_S_LCD;
1da177e4 1498 } else if (strlencmp(cmd, "lcd_disable") == 0) {
83f34724 1499 disable |= TP_ACPI_VIDEO_S_LCD;
1da177e4 1500 } else if (strlencmp(cmd, "crt_enable") == 0) {
83f34724 1501 enable |= TP_ACPI_VIDEO_S_CRT;
1da177e4 1502 } else if (strlencmp(cmd, "crt_disable") == 0) {
83f34724 1503 disable |= TP_ACPI_VIDEO_S_CRT;
efa27145 1504 } else if (video_supported == TPACPI_VIDEO_NEW &&
78f81cc4 1505 strlencmp(cmd, "dvi_enable") == 0) {
83f34724 1506 enable |= TP_ACPI_VIDEO_S_DVI;
efa27145 1507 } else if (video_supported == TPACPI_VIDEO_NEW &&
78f81cc4 1508 strlencmp(cmd, "dvi_disable") == 0) {
83f34724 1509 disable |= TP_ACPI_VIDEO_S_DVI;
1da177e4 1510 } else if (strlencmp(cmd, "auto_enable") == 0) {
83f34724
HMH		 1511 res = video_autosw_set(1);
1512 if (res)
1513 return res;
1da177e4 1514 } else if (strlencmp(cmd, "auto_disable") == 0) {
83f34724
HMH		 1515 res = video_autosw_set(0);
1516 if (res)
1517 return res;
1da177e4 1518 } else if (strlencmp(cmd, "video_switch") == 0) {
83f34724
HMH		 1519 res = video_outputsw_cycle();
1520 if (res)
1521 return res;
1da177e4 1522 } else if (strlencmp(cmd, "expand_toggle") == 0) {
83f34724
HMH		 1523 res = video_expand_toggle();
1524 if (res)
1525 return res;
1da177e4
LT		 1526 } else
1527 return -EINVAL;
1528 }
1529
1530 if (enable || disable) {
83f34724
HMH		 1531 status = video_outputsw_get();
1532 if (status < 0)
1533 return status;
1534 res = video_outputsw_set((status & ~disable) | enable);
1535 if (res)
1536 return res;
1da177e4
LT		 1537 }
1538
1539 return 0;
1540}
1541
a5763f22
HMH		 1542static struct ibm_struct video_driver_data = {
1543 .name = "video",
1544 .read = video_read,
1545 .write = video_write,
1546 .exit = video_exit,
1547};
1548
56b6aeb0
HMH		 1549/*************************************************************************
1550 * Light (thinklight) subdriver
1551 */
1da177e4 1552
56b6aeb0
HMH		 1553IBM_HANDLE(lght, root, "\\LGHT"); /* A21e, A2xm/p, T20-22, X20-21 */
1554IBM_HANDLE(ledb, ec, "LEDB"); /* G4x */
1555
a5763f22 1556static int __init light_init(struct ibm_init_struct *iibm)
1da177e4 1557{
fe08bc4b
HMH		 1558 vdbg_printk(TPACPI_DBG_INIT, "initializing light subdriver\n");
1559
8d376cd6
HMH		 1560 IBM_ACPIHANDLE_INIT(ledb);
1561 IBM_ACPIHANDLE_INIT(lght);
1562 IBM_ACPIHANDLE_INIT(cmos);
5fba344c 1563
78f81cc4 1564 /* light not supported on 570, 600e/x, 770e, 770x, G4x, R30, R31 */
d8fd94d9 1565 tp_features.light = (cmos_handle || lght_handle) && !ledb_handle;
78f81cc4 1566
d8fd94d9 1567 if (tp_features.light)
78f81cc4
BD		 1568 /* light status not supported on
1569 570, 600e/x, 770e, 770x, G4x, R30, R31, R32, X20 */
d8fd94d9
HMH		 1570 tp_features.light_status =
1571 acpi_evalf(ec_handle, NULL, "KBLT", "qv");
1da177e4 1572
fe08bc4b 1573 vdbg_printk(TPACPI_DBG_INIT, "light is %s\n",
d8fd94d9 1574 str_supported(tp_features.light));
fe08bc4b 1575
d8fd94d9 1576 return (tp_features.light)? 0 : 1;
1da177e4
LT		 1577}
1578
78f81cc4 1579static int light_read(char *p)
1da177e4
LT		 1580{
1581 int len = 0;
1582 int status = 0;
1583
d8fd94d9 1584 if (!tp_features.light) {
78f81cc4 1585 len += sprintf(p + len, "status:\t\tnot supported\n");
d8fd94d9 1586 } else if (!tp_features.light_status) {
78f81cc4
BD		 1587 len += sprintf(p + len, "status:\t\tunknown\n");
1588 len += sprintf(p + len, "commands:\ton, off\n");
1589 } else {
1da177e4
LT		 1590 if (!acpi_evalf(ec_handle, &status, "KBLT", "d"))
1591 return -EIO;
1592 len += sprintf(p + len, "status:\t\t%s\n", onoff(status, 0));
78f81cc4
BD		 1593 len += sprintf(p + len, "commands:\ton, off\n");
1594 }
1da177e4
LT		 1595
1596 return len;
1597}
1598
78f81cc4 1599static int light_write(char *buf)
1da177e4
LT		 1600{
1601 int cmos_cmd, lght_cmd;
1602 char *cmd;
1603 int success;
78f81cc4 1604
d8fd94d9 1605 if (!tp_features.light)
78f81cc4
BD		 1606 return -ENODEV;
1607
1da177e4
LT		 1608 while ((cmd = next_cmd(&buf))) {
1609 if (strlencmp(cmd, "on") == 0) {
1610 cmos_cmd = 0x0c;
1611 lght_cmd = 1;
1612 } else if (strlencmp(cmd, "off") == 0) {
1613 cmos_cmd = 0x0d;
1614 lght_cmd = 0;
1615 } else
1616 return -EINVAL;
78f81cc4 1617
1da177e4 1618 success = cmos_handle ?
78f81cc4
BD		 1619 acpi_evalf(cmos_handle, NULL, NULL, "vd", cmos_cmd) :
1620 acpi_evalf(lght_handle, NULL, NULL, "vd", lght_cmd);
1da177e4
LT		 1621 if (!success)
1622 return -EIO;
1623 }
1624
1625 return 0;
1626}
1627
a5763f22
HMH		 1628static struct ibm_struct light_driver_data = {
1629 .name = "light",
1630 .read = light_read,
1631 .write = light_write,
1632};
1633
56b6aeb0
HMH		 1634/*************************************************************************
1635 * Dock subdriver
1636 */
1da177e4 1637
85998248 1638#ifdef CONFIG_THINKPAD_ACPI_DOCK
56b6aeb0
HMH		 1639
1640IBM_HANDLE(dock, root, "\\_SB.GDCK", /* X30, X31, X40 */
1641 "\\_SB.PCI0.DOCK", /* 600e/x,770e,770x,A2xm/p,T20-22,X20-21 */
1642 "\\_SB.PCI0.PCI1.DOCK", /* all others */
1643 "\\_SB.PCI.ISA.SLCE", /* 570 */
1644 ); /* A21e,G4x,R30,R31,R32,R40,R40e,R50e */
1645
5fba344c
HMH		 1646/* don't list other alternatives as we install a notify handler on the 570 */
1647IBM_HANDLE(pci, root, "\\_SB.PCI"); /* 570 */
1648
d94a7f16
HMH		 1649static struct tp_acpi_drv_struct ibm_dock_acpidriver[2] = {
1650 {
1651 .notify = dock_notify,
1652 .handle = &dock_handle,
1653 .type = ACPI_SYSTEM_NOTIFY,
1654 },
1655 {
1656 .hid = IBM_PCI_HID,
1657 .notify = dock_notify,
1658 .handle = &pci_handle,
1659 .type = ACPI_SYSTEM_NOTIFY,
1660 },
1661};
1662
1663static struct ibm_struct dock_driver_data[2] = {
1664 {
1665 .name = "dock",
1666 .read = dock_read,
1667 .write = dock_write,
1668 .acpi = &ibm_dock_acpidriver[0],
1669 },
1670 {
1671 .name = "dock",
1672 .acpi = &ibm_dock_acpidriver[1],
1673 },
1674};
1675
1da177e4
LT		 1676#define dock_docked() (_sta(dock_handle) & 1)
1677
a5763f22 1678static int __init dock_init(struct ibm_init_struct *iibm)
5fba344c 1679{
fe08bc4b
HMH		 1680 vdbg_printk(TPACPI_DBG_INIT, "initializing dock subdriver\n");
1681
8d376cd6 1682 IBM_ACPIHANDLE_INIT(dock);
5fba344c 1683
fe08bc4b
HMH		 1684 vdbg_printk(TPACPI_DBG_INIT, "dock is %s\n",
1685 str_supported(dock_handle != NULL));
1686
5fba344c
HMH		 1687 return (dock_handle)? 0 : 1;
1688}
1689
d94a7f16
HMH		 1690static int __init dock_init2(struct ibm_init_struct *iibm)
1691{
1692 int dock2_needed;
1693
1694 vdbg_printk(TPACPI_DBG_INIT, "initializing dock subdriver part 2\n");
1695
1696 if (dock_driver_data[0].flags.acpi_driver_registered &&
1697 dock_driver_data[0].flags.acpi_notify_installed) {
1698 IBM_ACPIHANDLE_INIT(pci);
1699 dock2_needed = (pci_handle != NULL);
1700 vdbg_printk(TPACPI_DBG_INIT,
1701 "dock PCI handler for the TP 570 is %s\n",
1702 str_supported(dock2_needed));
1703 } else {
1704 vdbg_printk(TPACPI_DBG_INIT,
1705 "dock subdriver part 2 not required\n");
1706 dock2_needed = 0;
1707 }
1708
1709 return (dock2_needed)? 0 : 1;
1710}
1711
56b6aeb0
HMH		 1712static void dock_notify(struct ibm_struct *ibm, u32 event)
1713{
1714 int docked = dock_docked();
8d376cd6 1715 int pci = ibm->acpi->hid && strstr(ibm->acpi->hid, IBM_PCI_HID);
56b6aeb0
HMH		 1716
1717 if (event == 1 && !pci) /* 570 */
8d376cd6 1718 acpi_bus_generate_event(ibm->acpi->device, event, 1); /* button */
56b6aeb0 1719 else if (event == 1 && pci) /* 570 */
8d376cd6 1720 acpi_bus_generate_event(ibm->acpi->device, event, 3); /* dock */
56b6aeb0 1721 else if (event == 3 && docked)
8d376cd6 1722 acpi_bus_generate_event(ibm->acpi->device, event, 1); /* button */
56b6aeb0 1723 else if (event == 3 && !docked)
8d376cd6 1724 acpi_bus_generate_event(ibm->acpi->device, event, 2); /* undock */
56b6aeb0 1725 else if (event == 0 && docked)
8d376cd6 1726 acpi_bus_generate_event(ibm->acpi->device, event, 3); /* dock */
56b6aeb0
HMH		 1727 else {
1728 printk(IBM_ERR "unknown dock event %d, status %d\n",
1729 event, _sta(dock_handle));
8d376cd6 1730 acpi_bus_generate_event(ibm->acpi->device, event, 0); /* unknown */
56b6aeb0
HMH		 1731 }
1732}
1733
78f81cc4 1734static int dock_read(char *p)
1da177e4
LT		 1735{
1736 int len = 0;
1737 int docked = dock_docked();
1738
1739 if (!dock_handle)
1740 len += sprintf(p + len, "status:\t\tnot supported\n");
1741 else if (!docked)
1742 len += sprintf(p + len, "status:\t\tundocked\n");
1743 else {
1744 len += sprintf(p + len, "status:\t\tdocked\n");
1745 len += sprintf(p + len, "commands:\tdock, undock\n");
1746 }
1747
1748 return len;
1749}
1750
78f81cc4 1751static int dock_write(char *buf)
1da177e4
LT		 1752{
1753 char *cmd;
1754
1755 if (!dock_docked())
78f81cc4 1756 return -ENODEV;
1da177e4
LT		 1757
1758 while ((cmd = next_cmd(&buf))) {
1759 if (strlencmp(cmd, "undock") == 0) {
78f81cc4
BD		 1760 if (!acpi_evalf(dock_handle, NULL, "_DCK", "vd", 0) ||
1761 !acpi_evalf(dock_handle, NULL, "_EJ0", "vd", 1))
56b6aeb0
HMH		 1762 return -EIO;
1763 } else if (strlencmp(cmd, "dock") == 0) {
1764 if (!acpi_evalf(dock_handle, NULL, "_DCK", "vd", 1))
1765 return -EIO;
1766 } else
1767 return -EINVAL;
1da177e4 1768 }
56b6aeb0
HMH		 1769
1770 return 0;
1da177e4 1771}
56b6aeb0 1772
85998248 1773#endif /* CONFIG_THINKPAD_ACPI_DOCK */
56b6aeb0
HMH		 1774
1775/*************************************************************************
1776 * Bay subdriver
1777 */
1da177e4 1778
85998248 1779#ifdef CONFIG_THINKPAD_ACPI_BAY
56b6aeb0
HMH		 1780IBM_HANDLE(bay, root, "\\_SB.PCI.IDE.SECN.MAST", /* 570 */
1781 "\\_SB.PCI0.IDE0.IDES.IDSM", /* 600e/x, 770e, 770x */
1782 "\\_SB.PCI0.SATA.SCND.MSTR", /* T60, X60, Z60 */
1783 "\\_SB.PCI0.IDE0.SCND.MSTR", /* all others */
1784 ); /* A21e, R30, R31 */
1785IBM_HANDLE(bay_ej, bay, "_EJ3", /* 600e/x, A2xm/p, A3x */
1786 "_EJ0", /* all others */
1787 ); /* 570,A21e,G4x,R30,R31,R32,R40e,R50e */
1788IBM_HANDLE(bay2, root, "\\_SB.PCI0.IDE0.PRIM.SLAV", /* A3x, R32 */
1789 "\\_SB.PCI0.IDE0.IDEP.IDPS", /* 600e/x, 770e, 770x */
1790 ); /* all others */
1791IBM_HANDLE(bay2_ej, bay2, "_EJ3", /* 600e/x, 770e, A3x */
1792 "_EJ0", /* 770x */
1793 ); /* all others */
1794
a5763f22 1795static int __init bay_init(struct ibm_init_struct *iibm)
1da177e4 1796{
fe08bc4b
HMH		 1797 vdbg_printk(TPACPI_DBG_INIT, "initializing bay subdriver\n");
1798
8d376cd6 1799 IBM_ACPIHANDLE_INIT(bay);
5fba344c 1800 if (bay_handle)
8d376cd6
HMH		 1801 IBM_ACPIHANDLE_INIT(bay_ej);
1802 IBM_ACPIHANDLE_INIT(bay2);
5fba344c 1803 if (bay2_handle)
8d376cd6 1804 IBM_ACPIHANDLE_INIT(bay2_ej);
5fba344c 1805
d8fd94d9
HMH		 1806 tp_features.bay_status = bay_handle &&
1807 acpi_evalf(bay_handle, NULL, "_STA", "qv");
1808 tp_features.bay_status2 = bay2_handle &&
1809 acpi_evalf(bay2_handle, NULL, "_STA", "qv");
78f81cc4 1810
d8fd94d9
HMH		 1811 tp_features.bay_eject = bay_handle && bay_ej_handle &&
1812 (strlencmp(bay_ej_path, "_EJ0") == 0 || experimental);
1813 tp_features.bay_eject2 = bay2_handle && bay2_ej_handle &&
1814 (strlencmp(bay2_ej_path, "_EJ0") == 0 || experimental);
1da177e4 1815
fe08bc4b
HMH		 1816 vdbg_printk(TPACPI_DBG_INIT,
1817 "bay 1: status %s, eject %s; bay 2: status %s, eject %s\n",
d8fd94d9
HMH		 1818 str_supported(tp_features.bay_status),
1819 str_supported(tp_features.bay_eject),
1820 str_supported(tp_features.bay_status2),
1821 str_supported(tp_features.bay_eject2));
fe08bc4b 1822
d8fd94d9
HMH		 1823 return (tp_features.bay_status || tp_features.bay_eject ||
1824 tp_features.bay_status2 || tp_features.bay_eject2)? 0 : 1;
1da177e4
LT		 1825}
1826
56b6aeb0
HMH		 1827static void bay_notify(struct ibm_struct *ibm, u32 event)
1828{
8d376cd6 1829 acpi_bus_generate_event(ibm->acpi->device, event, 0);
56b6aeb0
HMH		 1830}
1831
78f81cc4
BD		 1832#define bay_occupied(b) (_sta(b##_handle) & 1)
1833
1834static int bay_read(char *p)
1da177e4
LT		 1835{
1836 int len = 0;
78f81cc4
BD		 1837 int occupied = bay_occupied(bay);
1838 int occupied2 = bay_occupied(bay2);
1839 int eject, eject2;
1840
d8fd94d9
HMH		 1841 len += sprintf(p + len, "status:\t\t%s\n",
1842 tp_features.bay_status ?
1843 (occupied ? "occupied" : "unoccupied") :
1844 "not supported");
1845 if (tp_features.bay_status2)
78f81cc4
BD		 1846 len += sprintf(p + len, "status2:\t%s\n", occupied2 ?
1847 "occupied" : "unoccupied");
1848
d8fd94d9
HMH		 1849 eject = tp_features.bay_eject && occupied;
1850 eject2 = tp_features.bay_eject2 && occupied2;
78f81cc4
BD		 1851
1852 if (eject && eject2)
1853 len += sprintf(p + len, "commands:\teject, eject2\n");
1854 else if (eject)
1da177e4 1855 len += sprintf(p + len, "commands:\teject\n");
78f81cc4
BD		 1856 else if (eject2)
1857 len += sprintf(p + len, "commands:\teject2\n");
1da177e4
LT		 1858
1859 return len;
1860}
1861
78f81cc4 1862static int bay_write(char *buf)
1da177e4
LT		 1863{
1864 char *cmd;
1865
d8fd94d9 1866 if (!tp_features.bay_eject && !tp_features.bay_eject2)
78f81cc4
BD		 1867 return -ENODEV;
1868
1da177e4 1869 while ((cmd = next_cmd(&buf))) {
d8fd94d9 1870 if (tp_features.bay_eject && strlencmp(cmd, "eject") == 0) {
78f81cc4
BD		 1871 if (!acpi_evalf(bay_ej_handle, NULL, NULL, "vd", 1))
1872 return -EIO;
d8fd94d9 1873 } else if (tp_features.bay_eject2 &&
78f81cc4
BD		 1874 strlencmp(cmd, "eject2") == 0) {
1875 if (!acpi_evalf(bay2_ej_handle, NULL, NULL, "vd", 1))
1da177e4
LT		 1876 return -EIO;
1877 } else
1878 return -EINVAL;
1879 }
1880
1881 return 0;
78f81cc4 1882}
a5763f22 1883
8d376cd6
HMH		 1884static struct tp_acpi_drv_struct ibm_bay_acpidriver = {
1885 .notify = bay_notify,
1886 .handle = &bay_handle,
1887 .type = ACPI_SYSTEM_NOTIFY,
1888};
1889
a5763f22
HMH		 1890static struct ibm_struct bay_driver_data = {
1891 .name = "bay",
1892 .read = bay_read,
1893 .write = bay_write,
8d376cd6 1894 .acpi = &ibm_bay_acpidriver,
a5763f22
HMH		 1895};
1896
85998248 1897#endif /* CONFIG_THINKPAD_ACPI_BAY */
1da177e4 1898
56b6aeb0
HMH		 1899/*************************************************************************
1900 * CMOS subdriver
1901 */
1902
b616004c
HMH		 1903/* sysfs cmos_command -------------------------------------------------- */
1904static ssize_t cmos_command_store(struct device *dev,
1905 struct device_attribute *attr,
1906 const char *buf, size_t count)
1907{
1908 unsigned long cmos_cmd;
1909 int res;
1910
1911 if (parse_strtoul(buf, 21, &cmos_cmd))
1912 return -EINVAL;
1913
1914 res = issue_thinkpad_cmos_command(cmos_cmd);
1915 return (res)? res : count;
1916}
1917
1918static struct device_attribute dev_attr_cmos_command =
1919 __ATTR(cmos_command, S_IWUSR, NULL, cmos_command_store);
1920
1921/* --------------------------------------------------------------------- */
1922
a5763f22 1923static int __init cmos_init(struct ibm_init_struct *iibm)
5fba344c 1924{
b616004c
HMH		 1925 int res;
1926
fe08bc4b
HMH		 1927 vdbg_printk(TPACPI_DBG_INIT,
1928 "initializing cmos commands subdriver\n");
1929
8d376cd6 1930 IBM_ACPIHANDLE_INIT(cmos);
5fba344c 1931
fe08bc4b
HMH		 1932 vdbg_printk(TPACPI_DBG_INIT, "cmos commands are %s\n",
1933 str_supported(cmos_handle != NULL));
b616004c
HMH		 1934
1935 res = device_create_file(&tpacpi_pdev->dev, &dev_attr_cmos_command);
1936 if (res)
1937 return res;
1938
5fba344c
HMH		 1939 return (cmos_handle)? 0 : 1;
1940}
1941
b616004c
HMH		 1942static void cmos_exit(void)
1943{
1944 device_remove_file(&tpacpi_pdev->dev, &dev_attr_cmos_command);
1945}
1946
78f81cc4 1947static int cmos_read(char *p)
1da177e4
LT		 1948{
1949 int len = 0;
1950
78f81cc4
BD		 1951 /* cmos not supported on 570, 600e/x, 770e, 770x, A21e, A2xm/p,
1952 R30, R31, T20-22, X20-21 */
1da177e4
LT		 1953 if (!cmos_handle)
1954 len += sprintf(p + len, "status:\t\tnot supported\n");
1955 else {
1956 len += sprintf(p + len, "status:\t\tsupported\n");
78f81cc4 1957 len += sprintf(p + len, "commands:\t<cmd> (<cmd> is 0-21)\n");
1da177e4
LT		 1958 }
1959
1960 return len;
1961}
1962
78f81cc4 1963static int cmos_write(char *buf)
1da177e4
LT		 1964{
1965 char *cmd;
c9bea99c 1966 int cmos_cmd, res;
1da177e4
LT		 1967
1968 while ((cmd = next_cmd(&buf))) {
78f81cc4
BD		 1969 if (sscanf(cmd, "%u", &cmos_cmd) == 1 &&
1970 cmos_cmd >= 0 && cmos_cmd <= 21) {
1da177e4
LT		 1971 /* cmos_cmd set */
1972 } else
1973 return -EINVAL;
1974
c9bea99c
HMH		 1975 res = issue_thinkpad_cmos_command(cmos_cmd);
1976 if (res)
1977 return res;
1da177e4
LT		 1978 }
1979
1980 return 0;
78f81cc4
BD		 1981}
1982
a5763f22
HMH		 1983static struct ibm_struct cmos_driver_data = {
1984 .name = "cmos",
1985 .read = cmos_read,
1986 .write = cmos_write,
b616004c 1987 .exit = cmos_exit,
a5763f22 1988};
56b6aeb0
HMH		 1989
1990/*************************************************************************
1991 * LED subdriver
1992 */
1993
9a8e1738 1994static enum led_access_mode led_supported;
78f81cc4 1995
56b6aeb0
HMH		 1996IBM_HANDLE(led, ec, "SLED", /* 570 */
1997 "SYSL", /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20-21 */
1998 "LED", /* all others */
1999 ); /* R30, R31 */
2000
a5763f22 2001static int __init led_init(struct ibm_init_struct *iibm)
78f81cc4 2002{
fe08bc4b
HMH		 2003 vdbg_printk(TPACPI_DBG_INIT, "initializing LED subdriver\n");
2004
8d376cd6 2005 IBM_ACPIHANDLE_INIT(led);
5fba344c 2006
78f81cc4
BD		 2007 if (!led_handle)
2008 /* led not supported on R30, R31 */
efa27145 2009 led_supported = TPACPI_LED_NONE;
78f81cc4
BD		 2010 else if (strlencmp(led_path, "SLED") == 0)
2011 /* 570 */
efa27145 2012 led_supported = TPACPI_LED_570;
78f81cc4
BD		 2013 else if (strlencmp(led_path, "SYSL") == 0)
2014 /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20-21 */
efa27145 2015 led_supported = TPACPI_LED_OLD;
78f81cc4
BD		 2016 else
2017 /* all others */
efa27145 2018 led_supported = TPACPI_LED_NEW;
78f81cc4 2019
fe08bc4b
HMH		 2020 vdbg_printk(TPACPI_DBG_INIT, "LED commands are %s, mode %d\n",
2021 str_supported(led_supported), led_supported);
2022
5fba344c 2023 return (led_supported != TPACPI_LED_NONE)? 0 : 1;
78f81cc4
BD		 2024}
2025
2026#define led_status(s) ((s) == 0 ? "off" : ((s) == 1 ? "on" : "blinking"))
2027
2028static int led_read(char *p)
1da177e4
LT		 2029{
2030 int len = 0;
2031
78f81cc4
BD		 2032 if (!led_supported) {
2033 len += sprintf(p + len, "status:\t\tnot supported\n");
2034 return len;
2035 }
2036 len += sprintf(p + len, "status:\t\tsupported\n");
2037
efa27145 2038 if (led_supported == TPACPI_LED_570) {
78f81cc4
BD		 2039 /* 570 */
2040 int i, status;
2041 for (i = 0; i < 8; i++) {
2042 if (!acpi_evalf(ec_handle,
2043 &status, "GLED", "dd", 1 << i))
2044 return -EIO;
2045 len += sprintf(p + len, "%d:\t\t%s\n",
2046 i, led_status(status));
2047 }
2048 }
2049
1da177e4 2050 len += sprintf(p + len, "commands:\t"
78f81cc4 2051 "<led> on, <led> off, <led> blink (<led> is 0-7)\n");
1da177e4
LT		 2052
2053 return len;
2054}
2055
78f81cc4
BD		 2056/* off, on, blink */
2057static const int led_sled_arg1[] = { 0, 1, 3 };
2058static const int led_exp_hlbl[] = { 0, 0, 1 }; /* led# * */
2059static const int led_exp_hlcl[] = { 0, 1, 1 }; /* led# * */
2060static const int led_led_arg1[] = { 0, 0x80, 0xc0 };
2061
78f81cc4 2062static int led_write(char *buf)
1da177e4
LT		 2063{
2064 char *cmd;
78f81cc4
BD		 2065 int led, ind, ret;
2066
2067 if (!led_supported)
2068 return -ENODEV;
1da177e4
LT		 2069
2070 while ((cmd = next_cmd(&buf))) {
78f81cc4 2071 if (sscanf(cmd, "%d", &led) != 1 || led < 0 || led > 7)
1da177e4
LT		 2072 return -EINVAL;
2073
78f81cc4
BD		 2074 if (strstr(cmd, "off")) {
2075 ind = 0;
1da177e4 2076 } else if (strstr(cmd, "on")) {
78f81cc4
BD		 2077 ind = 1;
2078 } else if (strstr(cmd, "blink")) {
2079 ind = 2;
1da177e4
LT		 2080 } else
2081 return -EINVAL;
78f81cc4 2082
efa27145 2083 if (led_supported == TPACPI_LED_570) {
78f81cc4
BD		 2084 /* 570 */
2085 led = 1 << led;
1da177e4 2086 if (!acpi_evalf(led_handle, NULL, NULL, "vdd",
78f81cc4 2087 led, led_sled_arg1[ind]))
1da177e4 2088 return -EIO;
efa27145 2089 } else if (led_supported == TPACPI_LED_OLD) {
78f81cc4
BD		 2090 /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20 */
2091 led = 1 << led;
efa27145 2092 ret = ec_write(TPACPI_LED_EC_HLMS, led);
78f81cc4
BD		 2093 if (ret >= 0)
2094 ret =
efa27145 2095 ec_write(TPACPI_LED_EC_HLBL,
e062e034 2096 led * led_exp_hlbl[ind]);
78f81cc4
BD		 2097 if (ret >= 0)
2098 ret =
efa27145 2099 ec_write(TPACPI_LED_EC_HLCL,
e062e034 2100 led * led_exp_hlcl[ind]);
78f81cc4
BD		 2101 if (ret < 0)
2102 return ret;
2103 } else {
2104 /* all others */
2105 if (!acpi_evalf(led_handle, NULL, NULL, "vdd",
2106 led, led_led_arg1[ind]))
1da177e4 2107 return -EIO;
78f81cc4
BD		 2108 }
2109 }
2110
2111 return 0;
2112}
2113
a5763f22
HMH		 2114static struct ibm_struct led_driver_data = {
2115 .name = "led",
2116 .read = led_read,
2117 .write = led_write,
2118};
2119
56b6aeb0
HMH		 2120/*************************************************************************
2121 * Beep subdriver
2122 */
2123
2124IBM_HANDLE(beep, ec, "BEEP"); /* all except R30, R31 */
2125
a5763f22 2126static int __init beep_init(struct ibm_init_struct *iibm)
5fba344c 2127{
fe08bc4b
HMH		 2128 vdbg_printk(TPACPI_DBG_INIT, "initializing beep subdriver\n");
2129
8d376cd6 2130 IBM_ACPIHANDLE_INIT(beep);
5fba344c 2131
fe08bc4b
HMH		 2132 vdbg_printk(TPACPI_DBG_INIT, "beep is %s\n",
2133 str_supported(beep_handle != NULL));
2134
5fba344c
HMH		 2135 return (beep_handle)? 0 : 1;
2136}
2137
78f81cc4
BD		 2138static int beep_read(char *p)
2139{
2140 int len = 0;
2141
2142 if (!beep_handle)
2143 len += sprintf(p + len, "status:\t\tnot supported\n");
2144 else {
2145 len += sprintf(p + len, "status:\t\tsupported\n");
2146 len += sprintf(p + len, "commands:\t<cmd> (<cmd> is 0-17)\n");
2147 }
2148
2149 return len;
2150}
2151
2152static int beep_write(char *buf)
2153{
2154 char *cmd;
2155 int beep_cmd;
2156
2157 if (!beep_handle)
2158 return -ENODEV;
2159
2160 while ((cmd = next_cmd(&buf))) {
2161 if (sscanf(cmd, "%u", &beep_cmd) == 1 &&
2162 beep_cmd >= 0 && beep_cmd <= 17) {
2163 /* beep_cmd set */
2164 } else
2165 return -EINVAL;
2166 if (!acpi_evalf(beep_handle, NULL, NULL, "vdd", beep_cmd, 0))
2167 return -EIO;
2168 }
2169
2170 return 0;
2171}
2172
a5763f22
HMH		 2173static struct ibm_struct beep_driver_data = {
2174 .name = "beep",
2175 .read = beep_read,
2176 .write = beep_write,
2177};
2178
56b6aeb0
HMH		 2179/*************************************************************************
2180 * Thermal subdriver
2181 */
78f81cc4 2182
a26f878a 2183static enum thermal_access_mode thermal_read_mode;
78f81cc4 2184
2c37aa4e
HMH		 2185/* sysfs temp##_input -------------------------------------------------- */
2186
2187static ssize_t thermal_temp_input_show(struct device *dev,
2188 struct device_attribute *attr,
2189 char *buf)
2190{
2191 struct sensor_device_attribute *sensor_attr =
2192 to_sensor_dev_attr(attr);
2193 int idx = sensor_attr->index;
2194 s32 value;
2195 int res;
2196
2197 res = thermal_get_sensor(idx, &value);
2198 if (res)
2199 return res;
2200 if (value == TP_EC_THERMAL_TMP_NA * 1000)
2201 return -ENXIO;
2202
2203 return snprintf(buf, PAGE_SIZE, "%d\n", value);
2204}
2205
2206#define THERMAL_SENSOR_ATTR_TEMP(_idxA, _idxB) \
2207 SENSOR_ATTR(temp##_idxA##_input, S_IRUGO, thermal_temp_input_show, NULL, _idxB)
2208
2209static struct sensor_device_attribute sensor_dev_attr_thermal_temp_input[] = {
2210 THERMAL_SENSOR_ATTR_TEMP(1, 0),
2211 THERMAL_SENSOR_ATTR_TEMP(2, 1),
2212 THERMAL_SENSOR_ATTR_TEMP(3, 2),
2213 THERMAL_SENSOR_ATTR_TEMP(4, 3),
2214 THERMAL_SENSOR_ATTR_TEMP(5, 4),
2215 THERMAL_SENSOR_ATTR_TEMP(6, 5),
2216 THERMAL_SENSOR_ATTR_TEMP(7, 6),
2217 THERMAL_SENSOR_ATTR_TEMP(8, 7),
2218 THERMAL_SENSOR_ATTR_TEMP(9, 8),
2219 THERMAL_SENSOR_ATTR_TEMP(10, 9),
2220 THERMAL_SENSOR_ATTR_TEMP(11, 10),
2221 THERMAL_SENSOR_ATTR_TEMP(12, 11),
2222 THERMAL_SENSOR_ATTR_TEMP(13, 12),
2223 THERMAL_SENSOR_ATTR_TEMP(14, 13),
2224 THERMAL_SENSOR_ATTR_TEMP(15, 14),
2225 THERMAL_SENSOR_ATTR_TEMP(16, 15),
2226};
2227
2228#define THERMAL_ATTRS(X) \
2229 &sensor_dev_attr_thermal_temp_input[X].dev_attr.attr
2230
2231static struct attribute *thermal_temp_input_attr[] = {
2232 THERMAL_ATTRS(8),
2233 THERMAL_ATTRS(9),
2234 THERMAL_ATTRS(10),
2235 THERMAL_ATTRS(11),
2236 THERMAL_ATTRS(12),
2237 THERMAL_ATTRS(13),
2238 THERMAL_ATTRS(14),
2239 THERMAL_ATTRS(15),
2240 THERMAL_ATTRS(0),
2241 THERMAL_ATTRS(1),
2242 THERMAL_ATTRS(2),
2243 THERMAL_ATTRS(3),
2244 THERMAL_ATTRS(4),
2245 THERMAL_ATTRS(5),
2246 THERMAL_ATTRS(6),
2247 THERMAL_ATTRS(7),
2248 NULL
2249};
2250
2251static const struct attribute_group thermal_temp_input16_group = {
2252 .attrs = thermal_temp_input_attr
2253};
2254
2255static const struct attribute_group thermal_temp_input8_group = {
2256 .attrs = &thermal_temp_input_attr[8]
2257};
2258
2259#undef THERMAL_SENSOR_ATTR_TEMP
2260#undef THERMAL_ATTRS
2261
2262/* --------------------------------------------------------------------- */
2263
a5763f22 2264static int __init thermal_init(struct ibm_init_struct *iibm)
78f81cc4 2265{
60eb0b35
HMH		 2266 u8 t, ta1, ta2;
2267 int i;
5fba344c 2268 int acpi_tmp7;
2c37aa4e 2269 int res;
5fba344c 2270
fe08bc4b
HMH		 2271 vdbg_printk(TPACPI_DBG_INIT, "initializing thermal subdriver\n");
2272
5fba344c 2273 acpi_tmp7 = acpi_evalf(ec_handle, NULL, "TMP7", "qv");
60eb0b35
HMH		 2274
2275 if (ibm_thinkpad_ec_found && experimental) {
2276 /*
2277 * Direct EC access mode: sensors at registers
2278 * 0x78-0x7F, 0xC0-0xC7. Registers return 0x00 for
2279 * non-implemented, thermal sensors return 0x80 when
2280 * not available
2281 */
78f81cc4 2282
60eb0b35
HMH		 2283 ta1 = ta2 = 0;
2284 for (i = 0; i < 8; i++) {
04cc862c 2285 if (acpi_ec_read(TP_EC_THERMAL_TMP0 + i, &t)) {
60eb0b35
HMH		 2286 ta1 |= t;
2287 } else {
2288 ta1 = 0;
2289 break;
2290 }
04cc862c 2291 if (acpi_ec_read(TP_EC_THERMAL_TMP8 + i, &t)) {
60eb0b35
HMH		 2292 ta2 |= t;
2293 } else {
2294 ta1 = 0;
2295 break;
2296 }
2297 }
2298 if (ta1 == 0) {
2299 /* This is sheer paranoia, but we handle it anyway */
2300 if (acpi_tmp7) {
2301 printk(IBM_ERR
2302 "ThinkPad ACPI EC access misbehaving, "
2303 "falling back to ACPI TMPx access mode\n");
efa27145 2304 thermal_read_mode = TPACPI_THERMAL_ACPI_TMP07;
60eb0b35
HMH		 2305 } else {
2306 printk(IBM_ERR
2307 "ThinkPad ACPI EC access misbehaving, "
2308 "disabling thermal sensors access\n");
efa27145 2309 thermal_read_mode = TPACPI_THERMAL_NONE;
60eb0b35
HMH		 2310 }
2311 } else {
2312 thermal_read_mode =
2313 (ta2 != 0) ?
efa27145 2314 TPACPI_THERMAL_TPEC_16 : TPACPI_THERMAL_TPEC_8;
60eb0b35
HMH		 2315 }
2316 } else if (acpi_tmp7) {
a26f878a
HMH		 2317 if (acpi_evalf(ec_handle, NULL, "UPDT", "qv")) {
2318 /* 600e/x, 770e, 770x */
efa27145 2319 thermal_read_mode = TPACPI_THERMAL_ACPI_UPDT;
a26f878a
HMH		 2320 } else {
2321 /* Standard ACPI TMPx access, max 8 sensors */
efa27145 2322 thermal_read_mode = TPACPI_THERMAL_ACPI_TMP07;
a26f878a
HMH		 2323 }
2324 } else {
2325 /* temperatures not supported on 570, G4x, R30, R31, R32 */
efa27145 2326 thermal_read_mode = TPACPI_THERMAL_NONE;
a26f878a 2327 }
78f81cc4 2328
fe08bc4b
HMH		 2329 vdbg_printk(TPACPI_DBG_INIT, "thermal is %s, mode %d\n",
2330 str_supported(thermal_read_mode != TPACPI_THERMAL_NONE),
2331 thermal_read_mode);
2332
2c37aa4e
HMH		 2333 switch(thermal_read_mode) {
2334 case TPACPI_THERMAL_TPEC_16:
2335 res = sysfs_create_group(&tpacpi_pdev->dev.kobj,
2336 &thermal_temp_input16_group);
2337 if (res)
2338 return res;
2339 break;
2340 case TPACPI_THERMAL_TPEC_8:
2341 case TPACPI_THERMAL_ACPI_TMP07:
2342 case TPACPI_THERMAL_ACPI_UPDT:
2343 res = sysfs_create_group(&tpacpi_pdev->dev.kobj,
2344 &thermal_temp_input8_group);
2345 if (res)
2346 return res;
2347 break;
2348 case TPACPI_THERMAL_NONE:
2349 default:
2350 return 1;
2351 }
2352
2353 return 0;
2354}
2355
2356static void thermal_exit(void)
2357{
2358 switch(thermal_read_mode) {
2359 case TPACPI_THERMAL_TPEC_16:
2360 sysfs_remove_group(&tpacpi_pdev->dev.kobj,
2361 &thermal_temp_input16_group);
2362 break;
2363 case TPACPI_THERMAL_TPEC_8:
2364 case TPACPI_THERMAL_ACPI_TMP07:
2365 case TPACPI_THERMAL_ACPI_UPDT:
2366 sysfs_remove_group(&tpacpi_pdev->dev.kobj,
2367 &thermal_temp_input16_group);
2368 break;
2369 case TPACPI_THERMAL_NONE:
2370 default:
2371 break;
2372 }
78f81cc4
BD		 2373}
2374
04cc862c
HMH		 2375/* idx is zero-based */
2376static int thermal_get_sensor(int idx, s32 *value)
78f81cc4 2377{
04cc862c 2378 int t;
60eb0b35 2379 s8 tmp;
04cc862c 2380 char tmpi[5];
78f81cc4 2381
04cc862c 2382 t = TP_EC_THERMAL_TMP0;
78f81cc4 2383
a26f878a 2384 switch (thermal_read_mode) {
efa27145
HMH		 2385#if TPACPI_MAX_THERMAL_SENSORS >= 16
2386 case TPACPI_THERMAL_TPEC_16:
04cc862c
HMH		 2387 if (idx >= 8 && idx <= 15) {
2388 t = TP_EC_THERMAL_TMP8;
2389 idx -= 8;
60eb0b35
HMH		 2390 }
2391 /* fallthrough */
2392#endif
efa27145 2393 case TPACPI_THERMAL_TPEC_8:
04cc862c
HMH		 2394 if (idx <= 7) {
2395 if (!acpi_ec_read(t + idx, &tmp))
78f81cc4 2396 return -EIO;
04cc862c
HMH		 2397 *value = tmp * 1000;
2398 return 0;
60eb0b35 2399 }
04cc862c 2400 break;
78f81cc4 2401
efa27145 2402 case TPACPI_THERMAL_ACPI_UPDT:
04cc862c
HMH		 2403 if (idx <= 7) {
2404 snprintf(tmpi, sizeof(tmpi), "TMP%c", '0' + idx);
2405 if (!acpi_evalf(ec_handle, NULL, "UPDT", "v"))
2406 return -EIO;
78f81cc4
BD		 2407 if (!acpi_evalf(ec_handle, &t, tmpi, "d"))
2408 return -EIO;
04cc862c
HMH		 2409 *value = (t - 2732) * 100;
2410 return 0;
78f81cc4 2411 }
04cc862c 2412 break;
78f81cc4 2413
efa27145 2414 case TPACPI_THERMAL_ACPI_TMP07:
04cc862c
HMH		 2415 if (idx <= 7) {
2416 snprintf(tmpi, sizeof(tmpi), "TMP%c", '0' + idx);
78f81cc4
BD		 2417 if (!acpi_evalf(ec_handle, &t, tmpi, "d"))
2418 return -EIO;
04cc862c
HMH		 2419 *value = t * 1000;
2420 return 0;
78f81cc4 2421 }
04cc862c 2422 break;
78f81cc4 2423
efa27145 2424 case TPACPI_THERMAL_NONE:
a26f878a 2425 default:
04cc862c
HMH		 2426 return -ENOSYS;
2427 }
2428
2429 return -EINVAL;
2430}
2431
2432static int thermal_get_sensors(struct ibm_thermal_sensors_struct *s)
2433{
2434 int res, i;
2435 int n;
2436
2437 n = 8;
2438 i = 0;
2439
2440 if (!s)
2441 return -EINVAL;
2442
2443 if (thermal_read_mode == TPACPI_THERMAL_TPEC_16)
2444 n = 16;
2445
2446 for(i = 0 ; i < n; i++) {
2447 res = thermal_get_sensor(i, &s->temp[i]);
2448 if (res)
2449 return res;
78f81cc4 2450 }
04cc862c
HMH		 2451
2452 return n;
a26f878a
HMH		 2453}
2454
2455static int thermal_read(char *p)
2456{
2457 int len = 0;
2458 int n, i;
2459 struct ibm_thermal_sensors_struct t;
2460
2461 n = thermal_get_sensors(&t);
2462 if (unlikely(n < 0))
2463 return n;
2464
2465 len += sprintf(p + len, "temperatures:\t");
2466
2467 if (n > 0) {
2468 for (i = 0; i < (n - 1); i++)
2469 len += sprintf(p + len, "%d ", t.temp[i] / 1000);
2470 len += sprintf(p + len, "%d\n", t.temp[i] / 1000);
2471 } else
2472 len += sprintf(p + len, "not supported\n");
78f81cc4
BD		 2473
2474 return len;
2475}
2476
a5763f22
HMH		 2477static struct ibm_struct thermal_driver_data = {
2478 .name = "thermal",
2479 .read = thermal_read,
2c37aa4e 2480 .exit = thermal_exit,
a5763f22
HMH		 2481};
2482
56b6aeb0
HMH		 2483/*************************************************************************
2484 * EC Dump subdriver
2485 */
2486
78f81cc4
BD		 2487static u8 ecdump_regs[256];
2488
2489static int ecdump_read(char *p)
2490{
2491 int len = 0;
2492 int i, j;
2493 u8 v;
2494
2495 len += sprintf(p + len, "EC "
2496 " +00 +01 +02 +03 +04 +05 +06 +07"
2497 " +08 +09 +0a +0b +0c +0d +0e +0f\n");
2498 for (i = 0; i < 256; i += 16) {
2499 len += sprintf(p + len, "EC 0x%02x:", i);
2500 for (j = 0; j < 16; j++) {
2501 if (!acpi_ec_read(i + j, &v))
2502 break;
2503 if (v != ecdump_regs[i + j])
2504 len += sprintf(p + len, " *%02x", v);
2505 else
2506 len += sprintf(p + len, " %02x", v);
2507 ecdump_regs[i + j] = v;
2508 }
2509 len += sprintf(p + len, "\n");
2510 if (j != 16)
2511 break;
2512 }
2513
2514 /* These are way too dangerous to advertise openly... */
2515#if 0
2516 len += sprintf(p + len, "commands:\t0x<offset> 0x<value>"
2517 " (<offset> is 00-ff, <value> is 00-ff)\n");
2518 len += sprintf(p + len, "commands:\t0x<offset> <value> "
2519 " (<offset> is 00-ff, <value> is 0-255)\n");
2520#endif
2521 return len;
2522}
2523
2524static int ecdump_write(char *buf)
2525{
2526 char *cmd;
2527 int i, v;
2528
2529 while ((cmd = next_cmd(&buf))) {
2530 if (sscanf(cmd, "0x%x 0x%x", &i, &v) == 2) {
2531 /* i and v set */
2532 } else if (sscanf(cmd, "0x%x %u", &i, &v) == 2) {
2533 /* i and v set */
2534 } else
2535 return -EINVAL;
2536 if (i >= 0 && i < 256 && v >= 0 && v < 256) {
2537 if (!acpi_ec_write(i, v))
1da177e4
LT		 2538 return -EIO;
2539 } else
2540 return -EINVAL;
2541 }
2542
2543 return 0;
78f81cc4
BD		 2544}
2545
a5763f22
HMH		 2546static struct ibm_struct ecdump_driver_data = {
2547 .name = "ecdump",
2548 .read = ecdump_read,
2549 .write = ecdump_write,
92641177 2550 .flags.experimental = 1,
a5763f22
HMH		 2551};
2552
56b6aeb0
HMH		 2553/*************************************************************************
2554 * Backlight/brightness subdriver
2555 */
2556
2557static struct backlight_device *ibm_backlight_device = NULL;
2558
2559static struct backlight_ops ibm_backlight_data = {
2560 .get_brightness = brightness_get,
2561 .update_status = brightness_update_status,
2562};
2563
a5763f22 2564static int __init brightness_init(struct ibm_init_struct *iibm)
56b6aeb0
HMH		 2565{
2566 int b;
2567
fe08bc4b
HMH		 2568 vdbg_printk(TPACPI_DBG_INIT, "initializing brightness subdriver\n");
2569
56b6aeb0
HMH		 2570 b = brightness_get(NULL);
2571 if (b < 0)
2572 return b;
2573
7d5a015e
HMH		 2574 ibm_backlight_device = backlight_device_register(
2575 TPACPI_BACKLIGHT_DEV_NAME, NULL, NULL,
2576 &ibm_backlight_data);
56b6aeb0
HMH		 2577 if (IS_ERR(ibm_backlight_device)) {
2578 printk(IBM_ERR "Could not register backlight device\n");
2579 return PTR_ERR(ibm_backlight_device);
2580 }
fe08bc4b 2581 vdbg_printk(TPACPI_DBG_INIT, "brightness is supported\n");
56b6aeb0
HMH		 2582
2583 ibm_backlight_device->props.max_brightness = 7;
2584 ibm_backlight_device->props.brightness = b;
2585 backlight_update_status(ibm_backlight_device);
2586
2587 return 0;
2588}
2589
2590static void brightness_exit(void)
2591{
2592 if (ibm_backlight_device) {
fe08bc4b
HMH		 2593 vdbg_printk(TPACPI_DBG_EXIT,
2594 "calling backlight_device_unregister()\n");
56b6aeb0
HMH		 2595 backlight_device_unregister(ibm_backlight_device);
2596 ibm_backlight_device = NULL;
2597 }
2598}
2599
2600static int brightness_update_status(struct backlight_device *bd)
2601{
2602 return brightness_set(
2603 (bd->props.fb_blank == FB_BLANK_UNBLANK &&
2604 bd->props.power == FB_BLANK_UNBLANK) ?
2605 bd->props.brightness : 0);
2606}
2607
8acb0250
HM		 2608static int brightness_get(struct backlight_device *bd)
2609{
8d297264
HMH		 2610 u8 level;
2611 if (!acpi_ec_read(brightness_offset, &level))
2612 return -EIO;
8acb0250 2613
8d297264 2614 level &= 0x7;
fb87a811 2615
8d297264 2616 return level;
8acb0250
HM		 2617}
2618
8acb0250 2619static int brightness_set(int value)
1da177e4 2620{
78f81cc4 2621 int cmos_cmd, inc, i;
8acb0250
HM		 2622 int current_value = brightness_get(NULL);
2623
2624 value &= 7;
2625
56b6aeb0 2626 cmos_cmd = value > current_value ? TP_CMOS_BRIGHTNESS_UP : TP_CMOS_BRIGHTNESS_DOWN;
8acb0250
HM		 2627 inc = value > current_value ? 1 : -1;
2628 for (i = current_value; i != value; i += inc) {
c9bea99c 2629 if (issue_thinkpad_cmos_command(cmos_cmd))
8acb0250
HM		 2630 return -EIO;
2631 if (!acpi_ec_write(brightness_offset, i + inc))
2632 return -EIO;
2633 }
2634
2635 return 0;
2636}
2637
56b6aeb0
HMH		 2638static int brightness_read(char *p)
2639{
2640 int len = 0;
2641 int level;
2642
2643 if ((level = brightness_get(NULL)) < 0) {
2644 len += sprintf(p + len, "level:\t\tunreadable\n");
2645 } else {
2646 len += sprintf(p + len, "level:\t\t%d\n", level & 0x7);
2647 len += sprintf(p + len, "commands:\tup, down\n");
2648 len += sprintf(p + len, "commands:\tlevel <level>"
2649 " (<level> is 0-7)\n");
2650 }
2651
2652 return len;
2653}
2654
8acb0250
HM		 2655static int brightness_write(char *buf)
2656{
2657 int level;
78f81cc4 2658 int new_level;
1da177e4 2659 char *cmd;
1da177e4
LT		 2660
2661 while ((cmd = next_cmd(&buf))) {
8acb0250
HM		 2662 if ((level = brightness_get(NULL)) < 0)
2663 return level;
78f81cc4
BD		 2664 level &= 7;
2665
2666 if (strlencmp(cmd, "up") == 0) {
2667 new_level = level == 7 ? 7 : level + 1;
2668 } else if (strlencmp(cmd, "down") == 0) {
2669 new_level = level == 0 ? 0 : level - 1;
2670 } else if (sscanf(cmd, "level %d", &new_level) == 1 &&
2671 new_level >= 0 && new_level <= 7) {
2672 /* new_level set */
2673 } else
2674 return -EINVAL;
2675
8acb0250 2676 brightness_set(new_level);
78f81cc4
BD		 2677 }
2678
2679 return 0;
2680}
2681
a5763f22
HMH		 2682static struct ibm_struct brightness_driver_data = {
2683 .name = "brightness",
2684 .read = brightness_read,
2685 .write = brightness_write,
2686 .exit = brightness_exit,
2687};
2688
56b6aeb0
HMH		 2689/*************************************************************************
2690 * Volume subdriver
2691 */
fb87a811 2692
78f81cc4
BD		 2693static int volume_read(char *p)
2694{
2695 int len = 0;
2696 u8 level;
2697
2698 if (!acpi_ec_read(volume_offset, &level)) {
2699 len += sprintf(p + len, "level:\t\tunreadable\n");
2700 } else {
2701 len += sprintf(p + len, "level:\t\t%d\n", level & 0xf);
2702 len += sprintf(p + len, "mute:\t\t%s\n", onoff(level, 6));
2703 len += sprintf(p + len, "commands:\tup, down, mute\n");
2704 len += sprintf(p + len, "commands:\tlevel <level>"
2705 " (<level> is 0-15)\n");
2706 }
2707
2708 return len;
2709}
2710
78f81cc4
BD		 2711static int volume_write(char *buf)
2712{
2713 int cmos_cmd, inc, i;
2714 u8 level, mute;
2715 int new_level, new_mute;
2716 char *cmd;
2717
2718 while ((cmd = next_cmd(&buf))) {
2719 if (!acpi_ec_read(volume_offset, &level))
2720 return -EIO;
2721 new_mute = mute = level & 0x40;
2722 new_level = level = level & 0xf;
2723
2724 if (strlencmp(cmd, "up") == 0) {
2725 if (mute)
2726 new_mute = 0;
2727 else
2728 new_level = level == 15 ? 15 : level + 1;
2729 } else if (strlencmp(cmd, "down") == 0) {
2730 if (mute)
2731 new_mute = 0;
2732 else
2733 new_level = level == 0 ? 0 : level - 1;
2734 } else if (sscanf(cmd, "level %d", &new_level) == 1 &&
2735 new_level >= 0 && new_level <= 15) {
2736 /* new_level set */
2737 } else if (strlencmp(cmd, "mute") == 0) {
2738 new_mute = 0x40;
1da177e4
LT		 2739 } else
2740 return -EINVAL;
2741
78f81cc4 2742 if (new_level != level) { /* mute doesn't change */
56b6aeb0 2743 cmos_cmd = new_level > level ? TP_CMOS_VOLUME_UP : TP_CMOS_VOLUME_DOWN;
78f81cc4
BD		 2744 inc = new_level > level ? 1 : -1;
2745
c9bea99c 2746 if (mute && (issue_thinkpad_cmos_command(cmos_cmd) ||
78f81cc4
BD		 2747 !acpi_ec_write(volume_offset, level)))
2748 return -EIO;
2749
2750 for (i = level; i != new_level; i += inc)
c9bea99c 2751 if (issue_thinkpad_cmos_command(cmos_cmd) ||
78f81cc4
BD		 2752 !acpi_ec_write(volume_offset, i + inc))
2753 return -EIO;
2754
c9bea99c 2755 if (mute && (issue_thinkpad_cmos_command(TP_CMOS_VOLUME_MUTE) ||
78f81cc4
BD		 2756 !acpi_ec_write(volume_offset,
2757 new_level + mute)))
2758 return -EIO;
2759 }
2760
2761 if (new_mute != mute) { /* level doesn't change */
56b6aeb0 2762 cmos_cmd = new_mute ? TP_CMOS_VOLUME_MUTE : TP_CMOS_VOLUME_UP;
78f81cc4 2763
c9bea99c 2764 if (issue_thinkpad_cmos_command(cmos_cmd) ||
78f81cc4
BD		 2765 !acpi_ec_write(volume_offset, level + new_mute))
2766 return -EIO;
2767 }
2768 }
2769
2770 return 0;
2771}
2772
a5763f22
HMH		 2773static struct ibm_struct volume_driver_data = {
2774 .name = "volume",
2775 .read = volume_read,
2776 .write = volume_write,
2777};
56b6aeb0
HMH		 2778
2779/*************************************************************************
2780 * Fan subdriver
2781 */
2782
2783/*
2784 * FAN ACCESS MODES
2785 *
efa27145 2786 * TPACPI_FAN_RD_ACPI_GFAN:
56b6aeb0
HMH		 2787 * ACPI GFAN method: returns fan level
2788 *
efa27145 2789 * see TPACPI_FAN_WR_ACPI_SFAN
f51d1a39 2790 * EC 0x2f (HFSP) not available if GFAN exists
56b6aeb0 2791 *
efa27145 2792 * TPACPI_FAN_WR_ACPI_SFAN:
56b6aeb0
HMH		 2793 * ACPI SFAN method: sets fan level, 0 (stop) to 7 (max)
2794 *
f51d1a39
HMH		 2795 * EC 0x2f (HFSP) might be available *for reading*, but do not use
2796 * it for writing.
56b6aeb0 2797 *
efa27145 2798 * TPACPI_FAN_WR_TPEC:
f51d1a39
HMH		 2799 * ThinkPad EC register 0x2f (HFSP): fan control loop mode
2800 * Supported on almost all ThinkPads
56b6aeb0
HMH		 2801 *
2802 * Fan speed changes of any sort (including those caused by the
2803 * disengaged mode) are usually done slowly by the firmware as the
2804 * maximum ammount of fan duty cycle change per second seems to be
2805 * limited.
2806 *
2807 * Reading is not available if GFAN exists.
2808 * Writing is not available if SFAN exists.
2809 *
2810 * Bits
2811 * 7 automatic mode engaged;
2812 * (default operation mode of the ThinkPad)
2813 * fan level is ignored in this mode.
f51d1a39 2814 * 6 full speed mode (takes precedence over bit 7);
56b6aeb0 2815 * not available on all thinkpads. May disable
f51d1a39
HMH		 2816 * the tachometer while the fan controller ramps up
2817 * the speed (which can take up to a few *minutes*).
2818 * Speeds up fan to 100% duty-cycle, which is far above
2819 * the standard RPM levels. It is not impossible that
2820 * it could cause hardware damage.
56b6aeb0
HMH		 2821 * 5-3 unused in some models. Extra bits for fan level
2822 * in others, but still useless as all values above
2823 * 7 map to the same speed as level 7 in these models.
2824 * 2-0 fan level (0..7 usually)
2825 * 0x00 = stop
2826 * 0x07 = max (set when temperatures critical)
2827 * Some ThinkPads may have other levels, see
efa27145 2828 * TPACPI_FAN_WR_ACPI_FANS (X31/X40/X41)
56b6aeb0
HMH		 2829 *
2830 * FIRMWARE BUG: on some models, EC 0x2f might not be initialized at
2831 * boot. Apparently the EC does not intialize it, so unless ACPI DSDT
2832 * does so, its initial value is meaningless (0x07).
2833 *
2834 * For firmware bugs, refer to:
2835 * http://thinkwiki.org/wiki/Embedded_Controller_Firmware#Firmware_Issues
2836 *
2837 * ----
2838 *
2839 * ThinkPad EC register 0x84 (LSB), 0x85 (MSB):
2840 * Main fan tachometer reading (in RPM)
2841 *
2842 * This register is present on all ThinkPads with a new-style EC, and
2843 * it is known not to be present on the A21m/e, and T22, as there is
2844 * something else in offset 0x84 according to the ACPI DSDT. Other
2845 * ThinkPads from this same time period (and earlier) probably lack the
2846 * tachometer as well.
2847 *
2848 * Unfortunately a lot of ThinkPads with new-style ECs but whose firwmare
2849 * was never fixed by IBM to report the EC firmware version string
2850 * probably support the tachometer (like the early X models), so
2851 * detecting it is quite hard. We need more data to know for sure.
2852 *
2853 * FIRMWARE BUG: always read 0x84 first, otherwise incorrect readings
2854 * might result.
2855 *
f51d1a39
HMH		 2856 * FIRMWARE BUG: may go stale while the EC is switching to full speed
2857 * mode.
56b6aeb0
HMH		 2858 *
2859 * For firmware bugs, refer to:
2860 * http://thinkwiki.org/wiki/Embedded_Controller_Firmware#Firmware_Issues
2861 *
efa27145 2862 * TPACPI_FAN_WR_ACPI_FANS:
56b6aeb0
HMH		 2863 * ThinkPad X31, X40, X41. Not available in the X60.
2864 *
2865 * FANS ACPI handle: takes three arguments: low speed, medium speed,
2866 * high speed. ACPI DSDT seems to map these three speeds to levels
2867 * as follows: STOP LOW LOW MED MED HIGH HIGH HIGH HIGH
2868 * (this map is stored on FAN0..FAN8 as "0,1,1,2,2,3,3,3,3")
2869 *
2870 * The speeds are stored on handles
2871 * (FANA:FAN9), (FANC:FANB), (FANE:FAND).
2872 *
2873 * There are three default speed sets, acessible as handles:
2874 * FS1L,FS1M,FS1H; FS2L,FS2M,FS2H; FS3L,FS3M,FS3H
2875 *
2876 * ACPI DSDT switches which set is in use depending on various
2877 * factors.
2878 *
efa27145 2879 * TPACPI_FAN_WR_TPEC is also available and should be used to
56b6aeb0
HMH		 2880 * command the fan. The X31/X40/X41 seems to have 8 fan levels,
2881 * but the ACPI tables just mention level 7.
2882 */
2883
69ba91cb
HMH		 2884static enum fan_status_access_mode fan_status_access_mode;
2885static enum fan_control_access_mode fan_control_access_mode;
2886static enum fan_control_commands fan_control_commands;
78f81cc4 2887
778b4d74 2888static u8 fan_control_initial_status;
fe98a52c 2889static u8 fan_control_desired_level;
778b4d74 2890
25c68a33 2891static void fan_watchdog_fire(struct work_struct *ignored);
16663a87 2892static int fan_watchdog_maxinterval;
25c68a33 2893static DECLARE_DELAYED_WORK(fan_watchdog_task, fan_watchdog_fire);
16663a87 2894
56b6aeb0
HMH		 2895IBM_HANDLE(fans, ec, "FANS"); /* X31, X40, X41 */
2896IBM_HANDLE(gfan, ec, "GFAN", /* 570 */
2897 "\\FSPD", /* 600e/x, 770e, 770x */
2898 ); /* all others */
2899IBM_HANDLE(sfan, ec, "SFAN", /* 570 */
2900 "JFNS", /* 770x-JL */
2901 ); /* all others */
2902
fe98a52c
HMH		 2903/*
2904 * SYSFS fan layout: hwmon compatible (device)
2905 *
2906 * pwm*_enable:
2907 * 0: "disengaged" mode
2908 * 1: manual mode
2909 * 2: native EC "auto" mode (recommended, hardware default)
2910 *
2911 * pwm*: set speed in manual mode, ignored otherwise.
2912 * 0 is level 0; 255 is level 7. Intermediate points done with linear
2913 * interpolation.
2914 *
2915 * fan*_input: tachometer reading, RPM
2916 *
2917 *
2918 * SYSFS fan layout: extensions
2919 *
2920 * fan_watchdog (driver):
2921 * fan watchdog interval in seconds, 0 disables (default), max 120
2922 */
2923
2924/* sysfs fan pwm1_enable ----------------------------------------------- */
2925static ssize_t fan_pwm1_enable_show(struct device *dev,
2926 struct device_attribute *attr,
2927 char *buf)
2928{
2929 int res, mode;
2930 u8 status;
2931
2932 res = fan_get_status_safe(&status);
2933 if (res)
2934 return res;
2935
2936 if (unlikely(tp_features.fan_ctrl_status_undef)) {
2937 if (status != fan_control_initial_status) {
2938 tp_features.fan_ctrl_status_undef = 0;
2939 } else {
2940 /* Return most likely status. In fact, it
2941 * might be the only possible status */
2942 status = TP_EC_FAN_AUTO;
2943 }
2944 }
2945
2946 if (status & TP_EC_FAN_FULLSPEED) {
2947 mode = 0;
2948 } else if (status & TP_EC_FAN_AUTO) {
2949 mode = 2;
2950 } else
2951 mode = 1;
2952
2953 return snprintf(buf, PAGE_SIZE, "%d\n", mode);
2954}
2955
2956static ssize_t fan_pwm1_enable_store(struct device *dev,
2957 struct device_attribute *attr,
2958 const char *buf, size_t count)
2959{
2960 unsigned long t;
2961 int res, level;
2962
2963 if (parse_strtoul(buf, 2, &t))
2964 return -EINVAL;
2965
2966 switch (t) {
2967 case 0:
2968 level = TP_EC_FAN_FULLSPEED;
2969 break;
2970 case 1:
2971 level = TPACPI_FAN_LAST_LEVEL;
2972 break;
2973 case 2:
2974 level = TP_EC_FAN_AUTO;
2975 break;
2976 case 3:
2977 /* reserved for software-controlled auto mode */
2978 return -ENOSYS;
2979 default:
2980 return -EINVAL;
2981 }
2982
2983 res = fan_set_level_safe(level);
c573ddb9
HMH		 2984 if (res == -ENXIO)
2985 return -EINVAL;
2986 else if (res < 0)
fe98a52c
HMH		 2987 return res;
2988
2989 fan_watchdog_reset();
2990
2991 return count;
2992}
2993
2994static struct device_attribute dev_attr_fan_pwm1_enable =
2995 __ATTR(pwm1_enable, S_IWUSR | S_IRUGO,
2996 fan_pwm1_enable_show, fan_pwm1_enable_store);
2997
2998/* sysfs fan pwm1 ------------------------------------------------------ */
2999static ssize_t fan_pwm1_show(struct device *dev,
3000 struct device_attribute *attr,
3001 char *buf)
3002{
3003 int res;
3004 u8 status;
3005
3006 res = fan_get_status_safe(&status);
3007 if (res)
3008 return res;
3009
3010 if (unlikely(tp_features.fan_ctrl_status_undef)) {
3011 if (status != fan_control_initial_status) {
3012 tp_features.fan_ctrl_status_undef = 0;
3013 } else {
3014 status = TP_EC_FAN_AUTO;
3015 }
3016 }
3017
3018 if ((status &
3019 (TP_EC_FAN_AUTO | TP_EC_FAN_FULLSPEED)) != 0)
3020 status = fan_control_desired_level;
3021
3022 if (status > 7)
3023 status = 7;
3024
3025 return snprintf(buf, PAGE_SIZE, "%u\n", (status * 255) / 7);
3026}
3027
3028static ssize_t fan_pwm1_store(struct device *dev,
3029 struct device_attribute *attr,
3030 const char *buf, size_t count)
3031{
3032 unsigned long s;
3033 int rc;
3034 u8 status, newlevel;
3035
3036 if (parse_strtoul(buf, 255, &s))
3037 return -EINVAL;
3038
3039 /* scale down from 0-255 to 0-7 */
3040 newlevel = (s >> 5) & 0x07;
3041
3042 rc = mutex_lock_interruptible(&fan_mutex);
3043 if (rc < 0)
3044 return rc;
3045
3046 rc = fan_get_status(&status);
3047 if (!rc && (status &
3048 (TP_EC_FAN_AUTO | TP_EC_FAN_FULLSPEED)) == 0) {
3049 rc = fan_set_level(newlevel);
c573ddb9
HMH		 3050 if (rc == -ENXIO)
3051 rc = -EINVAL;
3052 else if (!rc) {
fe98a52c 3053 fan_update_desired_level(newlevel);
ca4ac2f4
HMH		 3054 fan_watchdog_reset();
3055 }
fe98a52c
HMH		 3056 }
3057
3058 mutex_unlock(&fan_mutex);
3059 return (rc)? rc : count;
3060}
3061
3062static struct device_attribute dev_attr_fan_pwm1 =
3063 __ATTR(pwm1, S_IWUSR | S_IRUGO,
3064 fan_pwm1_show, fan_pwm1_store);
3065
3066/* sysfs fan fan1_input ------------------------------------------------ */
3067static ssize_t fan_fan1_input_show(struct device *dev,
3068 struct device_attribute *attr,
3069 char *buf)
3070{
3071 int res;
3072 unsigned int speed;
3073
3074 res = fan_get_speed(&speed);
3075 if (res < 0)
3076 return res;
3077
3078 return snprintf(buf, PAGE_SIZE, "%u\n", speed);
3079}
3080
3081static struct device_attribute dev_attr_fan_fan1_input =
3082 __ATTR(fan1_input, S_IRUGO,
3083 fan_fan1_input_show, NULL);
3084
3085/* sysfs fan fan_watchdog (driver) ------------------------------------- */
3086static ssize_t fan_fan_watchdog_show(struct device_driver *drv,
3087 char *buf)
3088{
3089 return snprintf(buf, PAGE_SIZE, "%u\n", fan_watchdog_maxinterval);
3090}
3091
3092static ssize_t fan_fan_watchdog_store(struct device_driver *drv,
3093 const char *buf, size_t count)
3094{
3095 unsigned long t;
3096
3097 if (parse_strtoul(buf, 120, &t))
3098 return -EINVAL;
3099
ecf2a80a
HMH		 3100 if (!fan_control_allowed)
3101 return -EPERM;
3102
fe98a52c
HMH		 3103 fan_watchdog_maxinterval = t;
3104 fan_watchdog_reset();
3105
3106 return count;
3107}
3108
3109static DRIVER_ATTR(fan_watchdog, S_IWUSR | S_IRUGO,
3110 fan_fan_watchdog_show, fan_fan_watchdog_store);
3111
3112/* --------------------------------------------------------------------- */
3113static struct attribute *fan_attributes[] = {
3114 &dev_attr_fan_pwm1_enable.attr, &dev_attr_fan_pwm1.attr,
3115 &dev_attr_fan_fan1_input.attr,
3116 NULL
3117};
3118
3119static const struct attribute_group fan_attr_group = {
3120 .attrs = fan_attributes,
3121};
3122
a5763f22 3123static int __init fan_init(struct ibm_init_struct *iibm)
78f81cc4 3124{
fe98a52c
HMH		 3125 int rc;
3126
fe08bc4b
HMH		 3127 vdbg_printk(TPACPI_DBG_INIT, "initializing fan subdriver\n");
3128
40ca9fdf 3129 mutex_init(&fan_mutex);
efa27145
HMH		 3130 fan_status_access_mode = TPACPI_FAN_NONE;
3131 fan_control_access_mode = TPACPI_FAN_WR_NONE;
69ba91cb 3132 fan_control_commands = 0;
16663a87 3133 fan_watchdog_maxinterval = 0;
d8fd94d9 3134 tp_features.fan_ctrl_status_undef = 0;
fe98a52c 3135 fan_control_desired_level = 7;
78f81cc4 3136
8d376cd6
HMH		 3137 IBM_ACPIHANDLE_INIT(fans);
3138 IBM_ACPIHANDLE_INIT(gfan);
3139 IBM_ACPIHANDLE_INIT(sfan);
5fba344c 3140
78f81cc4
BD		 3141 if (gfan_handle) {
3142 /* 570, 600e/x, 770e, 770x */
efa27145 3143 fan_status_access_mode = TPACPI_FAN_RD_ACPI_GFAN;
69ba91cb
HMH		 3144 } else {
3145 /* all other ThinkPads: note that even old-style
3146 * ThinkPad ECs supports the fan control register */
778b4d74
HMH		 3147 if (likely(acpi_ec_read(fan_status_offset,
3148 &fan_control_initial_status))) {
efa27145 3149 fan_status_access_mode = TPACPI_FAN_RD_TPEC;
778b4d74
HMH		 3150
3151 /* In some ThinkPads, neither the EC nor the ACPI
3152 * DSDT initialize the fan status, and it ends up
3153 * being set to 0x07 when it *could* be either
3154 * 0x07 or 0x80.
3155 *
3156 * Enable for TP-1Y (T43), TP-78 (R51e),
3157 * TP-76 (R52), TP-70 (T43, R52), which are known
3158 * to be buggy. */
3159 if (fan_control_initial_status == 0x07 &&
3160 ibm_thinkpad_ec_found &&
3161 ((ibm_thinkpad_ec_found[0] == '1' &&
3162 ibm_thinkpad_ec_found[1] == 'Y') ||
3163 (ibm_thinkpad_ec_found[0] == '7' &&
3164 (ibm_thinkpad_ec_found[1] == '6' ||
3165 ibm_thinkpad_ec_found[1] == '8' ||
3166 ibm_thinkpad_ec_found[1] == '0'))
3167 )) {
3168 printk(IBM_NOTICE
3169 "fan_init: initial fan status is "
3170 "unknown, assuming it is in auto "
3171 "mode\n");
d8fd94d9 3172 tp_features.fan_ctrl_status_undef = 1;
778b4d74 3173 }
69ba91cb
HMH		 3174 } else {
3175 printk(IBM_ERR
3176 "ThinkPad ACPI EC access misbehaving, "
3177 "fan status and control unavailable\n");
5fba344c 3178 return 1;
69ba91cb
HMH		 3179 }
3180 }
78f81cc4 3181
69ba91cb
HMH		 3182 if (sfan_handle) {
3183 /* 570, 770x-JL */
efa27145 3184 fan_control_access_mode = TPACPI_FAN_WR_ACPI_SFAN;
1c6a334e 3185 fan_control_commands |=
efa27145 3186 TPACPI_FAN_CMD_LEVEL | TPACPI_FAN_CMD_ENABLE;
78f81cc4 3187 } else {
69ba91cb
HMH		 3188 if (!gfan_handle) {
3189 /* gfan without sfan means no fan control */
3190 /* all other models implement TP EC 0x2f control */
3191
3192 if (fans_handle) {
a8b7a662 3193 /* X31, X40, X41 */
69ba91cb 3194 fan_control_access_mode =
efa27145 3195 TPACPI_FAN_WR_ACPI_FANS;
69ba91cb 3196 fan_control_commands |=
efa27145
HMH		 3197 TPACPI_FAN_CMD_SPEED |
3198 TPACPI_FAN_CMD_LEVEL |
3199 TPACPI_FAN_CMD_ENABLE;
69ba91cb 3200 } else {
efa27145 3201 fan_control_access_mode = TPACPI_FAN_WR_TPEC;
a12095c2 3202 fan_control_commands |=
efa27145
HMH		 3203 TPACPI_FAN_CMD_LEVEL |
3204 TPACPI_FAN_CMD_ENABLE;
69ba91cb
HMH		 3205 }
3206 }
3207 }
3208
fe08bc4b
HMH		 3209 vdbg_printk(TPACPI_DBG_INIT, "fan is %s, modes %d, %d\n",
3210 str_supported(fan_status_access_mode != TPACPI_FAN_NONE ||
3211 fan_control_access_mode != TPACPI_FAN_WR_NONE),
3212 fan_status_access_mode, fan_control_access_mode);
3213
ecf2a80a
HMH		 3214 /* fan control master switch */
3215 if (!fan_control_allowed) {
3216 fan_control_access_mode = TPACPI_FAN_WR_NONE;
3217 fan_control_commands = 0;
3218 dbg_printk(TPACPI_DBG_INIT,
3219 "fan control features disabled by parameter\n");
3220 }
3221
fe98a52c
HMH		 3222 /* update fan_control_desired_level */
3223 if (fan_status_access_mode != TPACPI_FAN_NONE)
3224 fan_get_status_safe(NULL);
3225
3226 if (fan_status_access_mode != TPACPI_FAN_NONE ||
3227 fan_control_access_mode != TPACPI_FAN_WR_NONE) {
3228 rc = sysfs_create_group(&tpacpi_pdev->dev.kobj,
3229 &fan_attr_group);
3230 if (!(rc < 0))
3231 rc = driver_create_file(&tpacpi_pdriver.driver,
3232 &driver_attr_fan_watchdog);
3233 if (rc < 0)
3234 return rc;
3235 return 0;
3236 } else
3237 return 1;
3238}
3239
3240/*
3241 * Call with fan_mutex held
3242 */
3243static void fan_update_desired_level(u8 status)
3244{
3245 if ((status &
3246 (TP_EC_FAN_AUTO | TP_EC_FAN_FULLSPEED)) == 0) {
3247 if (status > 7)
3248 fan_control_desired_level = 7;
3249 else
3250 fan_control_desired_level = status;
3251 }
69ba91cb 3252}
78f81cc4 3253
c52f0aa5 3254static int fan_get_status(u8 *status)
78f81cc4 3255{
c52f0aa5 3256 u8 s;
78f81cc4 3257
a8b7a662 3258 /* TODO:
efa27145 3259 * Add TPACPI_FAN_RD_ACPI_FANS ? */
a8b7a662 3260
3ef8a609 3261 switch (fan_status_access_mode) {
efa27145 3262 case TPACPI_FAN_RD_ACPI_GFAN:
78f81cc4 3263 /* 570, 600e/x, 770e, 770x */
c52f0aa5
HMH		 3264
3265 if (unlikely(!acpi_evalf(gfan_handle, &s, NULL, "d")))
1da177e4 3266 return -EIO;
78f81cc4 3267
c52f0aa5
HMH		 3268 if (likely(status))
3269 *status = s & 0x07;
3ef8a609
HMH		 3270
3271 break;
3272
efa27145 3273 case TPACPI_FAN_RD_TPEC:
78f81cc4 3274 /* all except 570, 600e/x, 770e, 770x */
c52f0aa5 3275 if (unlikely(!acpi_ec_read(fan_status_offset, &s)))
3ef8a609 3276 return -EIO;
78f81cc4 3277
c52f0aa5
HMH		 3278 if (likely(status))
3279 *status = s;
3280
3281 break;
3282
3283 default:
3284 return -ENXIO;
78f81cc4
BD		 3285 }
3286
c52f0aa5
HMH		 3287 return 0;
3288}
3289
fe98a52c
HMH		 3290static int fan_get_status_safe(u8 *status)
3291{
3292 int rc;
3293 u8 s;
3294
3295 rc = mutex_lock_interruptible(&fan_mutex);
3296 if (rc < 0)
3297 return rc;
3298 rc = fan_get_status(&s);
3299 if (!rc)
3300 fan_update_desired_level(s);
3301 mutex_unlock(&fan_mutex);
3302
3303 if (status)
3304 *status = s;
3305
3306 return rc;
3307}
3308
56b6aeb0
HMH		 3309static void fan_exit(void)
3310{
99fba3f8 3311 vdbg_printk(TPACPI_DBG_EXIT, "cancelling any pending fan watchdog tasks\n");
fe98a52c
HMH		 3312
3313 /* FIXME: can we really do this unconditionally? */
3314 sysfs_remove_group(&tpacpi_pdev->dev.kobj, &fan_attr_group);
3315 driver_remove_file(&tpacpi_pdriver.driver, &driver_attr_fan_watchdog);
3316
56b6aeb0
HMH		 3317 cancel_delayed_work(&fan_watchdog_task);
3318 flush_scheduled_work();
3319}
3320
c52f0aa5
HMH		 3321static int fan_get_speed(unsigned int *speed)
3322{
3323 u8 hi, lo;
3324
3325 switch (fan_status_access_mode) {
efa27145 3326 case TPACPI_FAN_RD_TPEC:
78f81cc4 3327 /* all except 570, 600e/x, 770e, 770x */
3ef8a609
HMH		 3328 if (unlikely(!acpi_ec_read(fan_rpm_offset, &lo) ||
3329 !acpi_ec_read(fan_rpm_offset + 1, &hi)))
3330 return -EIO;
3ef8a609 3331
c52f0aa5
HMH		 3332 if (likely(speed))
3333 *speed = (hi << 8) | lo;
3334
3335 break;
3336
3337 default:
3338 return -ENXIO;
3339 }
3340
3341 return 0;
3342}
3343
56b6aeb0 3344static void fan_watchdog_fire(struct work_struct *ignored)
16663a87 3345{
99fba3f8
HMH		 3346 int rc;
3347
56b6aeb0 3348 printk(IBM_NOTICE "fan watchdog: enabling fan\n");
99fba3f8
HMH		 3349 rc = fan_set_enable();
3350 if (rc < 0) {
3351 printk(IBM_ERR "fan watchdog: error %d while enabling fan, "
3352 "will try again later...\n", -rc);
56b6aeb0
HMH		 3353 /* reschedule for later */
3354 fan_watchdog_reset();
3355 }
16663a87
HMH		 3356}
3357
3358static void fan_watchdog_reset(void)
3359{
3360 static int fan_watchdog_active = 0;
3361
4985cd0a
HMH		 3362 if (fan_control_access_mode == TPACPI_FAN_WR_NONE)
3363 return;
3364
16663a87
HMH		 3365 if (fan_watchdog_active)
3366 cancel_delayed_work(&fan_watchdog_task);
3367
3368 if (fan_watchdog_maxinterval > 0) {
3369 fan_watchdog_active = 1;
3370 if (!schedule_delayed_work(&fan_watchdog_task,
3371 msecs_to_jiffies(fan_watchdog_maxinterval
3372 * 1000))) {
3373 printk(IBM_ERR "failed to schedule the fan watchdog, "
3374 "watchdog will not trigger\n");
3375 }
3376 } else
3377 fan_watchdog_active = 0;
3378}
3379
18ad7996 3380static int fan_set_level(int level)
78f81cc4 3381{
ecf2a80a
HMH		 3382 if (!fan_control_allowed)
3383 return -EPERM;
3384
18ad7996 3385 switch (fan_control_access_mode) {
efa27145 3386 case TPACPI_FAN_WR_ACPI_SFAN:
18ad7996 3387 if (level >= 0 && level <= 7) {
fe98a52c 3388 if (!acpi_evalf(sfan_handle, NULL, NULL, "vd", level))
78f81cc4 3389 return -EIO;
18ad7996
HMH		 3390 } else
3391 return -EINVAL;
3392 break;
3393
efa27145
HMH		 3394 case TPACPI_FAN_WR_ACPI_FANS:
3395 case TPACPI_FAN_WR_TPEC:
3396 if ((level != TP_EC_FAN_AUTO) &&
3397 (level != TP_EC_FAN_FULLSPEED) &&
a12095c2
HMH		 3398 ((level < 0) || (level > 7)))
3399 return -EINVAL;
3400
eaa7571b
HMH		 3401 /* safety net should the EC not support AUTO
3402 * or FULLSPEED mode bits and just ignore them */
3403 if (level & TP_EC_FAN_FULLSPEED)
3404 level |= 7; /* safety min speed 7 */
3405 else if (level & TP_EC_FAN_FULLSPEED)
3406 level |= 4; /* safety min speed 4 */
3407
fe98a52c 3408 if (!acpi_ec_write(fan_status_offset, level))
a12095c2 3409 return -EIO;
778b4d74 3410 else
d8fd94d9 3411 tp_features.fan_ctrl_status_undef = 0;
a12095c2
HMH		 3412 break;
3413
18ad7996
HMH		 3414 default:
3415 return -ENXIO;
3416 }
3417 return 0;
3418}
3419
fe98a52c
HMH		 3420static int fan_set_level_safe(int level)
3421{
3422 int rc;
3423
ecf2a80a
HMH		 3424 if (!fan_control_allowed)
3425 return -EPERM;
3426
fe98a52c
HMH		 3427 rc = mutex_lock_interruptible(&fan_mutex);
3428 if (rc < 0)
3429 return rc;
3430
3431 if (level == TPACPI_FAN_LAST_LEVEL)
3432 level = fan_control_desired_level;
3433
3434 rc = fan_set_level(level);
3435 if (!rc)
3436 fan_update_desired_level(level);
3437
3438 mutex_unlock(&fan_mutex);
3439 return rc;
3440}
3441
18ad7996
HMH		 3442static int fan_set_enable(void)
3443{
1c6a334e
HMH		 3444 u8 s;
3445 int rc;
3446
ecf2a80a
HMH		 3447 if (!fan_control_allowed)
3448 return -EPERM;
3449
40ca9fdf
HMH		 3450 rc = mutex_lock_interruptible(&fan_mutex);
3451 if (rc < 0)
3452 return rc;
3453
18ad7996 3454 switch (fan_control_access_mode) {
efa27145
HMH		 3455 case TPACPI_FAN_WR_ACPI_FANS:
3456 case TPACPI_FAN_WR_TPEC:
40ca9fdf
HMH		 3457 rc = fan_get_status(&s);
3458 if (rc < 0)
3459 break;
1c6a334e
HMH		 3460
3461 /* Don't go out of emergency fan mode */
eaa7571b
HMH		 3462 if (s != 7) {
3463 s &= 0x07;
3464 s |= TP_EC_FAN_AUTO | 4; /* min fan speed 4 */
3465 }
1c6a334e
HMH		 3466
3467 if (!acpi_ec_write(fan_status_offset, s))
40ca9fdf
HMH		 3468 rc = -EIO;
3469 else {
d8fd94d9 3470 tp_features.fan_ctrl_status_undef = 0;
40ca9fdf
HMH		 3471 rc = 0;
3472 }
1c6a334e
HMH		 3473 break;
3474
efa27145 3475 case TPACPI_FAN_WR_ACPI_SFAN:
40ca9fdf
HMH		 3476 rc = fan_get_status(&s);
3477 if (rc < 0)
3478 break;
1c6a334e
HMH		 3479
3480 s &= 0x07;
3481
3482 /* Set fan to at least level 4 */
eaa7571b 3483 s |= 4;
1c6a334e
HMH		 3484
3485 if (!acpi_evalf(sfan_handle, NULL, NULL, "vd", s))
40ca9fdf
HMH		 3486 rc= -EIO;
3487 else
3488 rc = 0;
18ad7996
HMH		 3489 break;
3490
3491 default:
40ca9fdf 3492 rc = -ENXIO;
18ad7996 3493 }
40ca9fdf
HMH		 3494
3495 mutex_unlock(&fan_mutex);
3496 return rc;
18ad7996
HMH		 3497}
3498
3499static int fan_set_disable(void)
3500{
40ca9fdf
HMH		 3501 int rc;
3502
ecf2a80a
HMH		 3503 if (!fan_control_allowed)
3504 return -EPERM;
3505
40ca9fdf
HMH		 3506 rc = mutex_lock_interruptible(&fan_mutex);
3507 if (rc < 0)
3508 return rc;
3509
3510 rc = 0;
18ad7996 3511 switch (fan_control_access_mode) {
efa27145
HMH		 3512 case TPACPI_FAN_WR_ACPI_FANS:
3513 case TPACPI_FAN_WR_TPEC:
18ad7996 3514 if (!acpi_ec_write(fan_status_offset, 0x00))
40ca9fdf 3515 rc = -EIO;
fe98a52c
HMH		 3516 else {
3517 fan_control_desired_level = 0;
d8fd94d9 3518 tp_features.fan_ctrl_status_undef = 0;
fe98a52c 3519 }
18ad7996
HMH		 3520 break;
3521
efa27145 3522 case TPACPI_FAN_WR_ACPI_SFAN:
1c6a334e 3523 if (!acpi_evalf(sfan_handle, NULL, NULL, "vd", 0x00))
40ca9fdf 3524 rc = -EIO;
fe98a52c
HMH		 3525 else
3526 fan_control_desired_level = 0;
1c6a334e
HMH		 3527 break;
3528
18ad7996 3529 default:
40ca9fdf 3530 rc = -ENXIO;
18ad7996 3531 }
40ca9fdf 3532
fe98a52c 3533
40ca9fdf
HMH		 3534 mutex_unlock(&fan_mutex);
3535 return rc;
56b6aeb0
HMH		 3536}
3537
3538static int fan_set_speed(int speed)
3539{
40ca9fdf
HMH		 3540 int rc;
3541
ecf2a80a
HMH		 3542 if (!fan_control_allowed)
3543 return -EPERM;
3544
40ca9fdf
HMH		 3545 rc = mutex_lock_interruptible(&fan_mutex);
3546 if (rc < 0)
3547 return rc;
3548
3549 rc = 0;
56b6aeb0 3550 switch (fan_control_access_mode) {
efa27145 3551 case TPACPI_FAN_WR_ACPI_FANS:
56b6aeb0
HMH		 3552 if (speed >= 0 && speed <= 65535) {
3553 if (!acpi_evalf(fans_handle, NULL, NULL, "vddd",
3554 speed, speed, speed))
40ca9fdf 3555 rc = -EIO;
56b6aeb0 3556 } else
40ca9fdf 3557 rc = -EINVAL;
56b6aeb0
HMH		 3558 break;
3559
3560 default:
40ca9fdf 3561 rc = -ENXIO;
56b6aeb0 3562 }
40ca9fdf
HMH		 3563
3564 mutex_unlock(&fan_mutex);
3565 return rc;
56b6aeb0
HMH		 3566}
3567
3568static int fan_read(char *p)
3569{
3570 int len = 0;
3571 int rc;
3572 u8 status;
3573 unsigned int speed = 0;
3574
3575 switch (fan_status_access_mode) {
efa27145 3576 case TPACPI_FAN_RD_ACPI_GFAN:
56b6aeb0 3577 /* 570, 600e/x, 770e, 770x */
fe98a52c 3578 if ((rc = fan_get_status_safe(&status)) < 0)
56b6aeb0
HMH		 3579 return rc;
3580
3581 len += sprintf(p + len, "status:\t\t%s\n"
3582 "level:\t\t%d\n",
3583 (status != 0) ? "enabled" : "disabled", status);
3584 break;
3585
efa27145 3586 case TPACPI_FAN_RD_TPEC:
56b6aeb0 3587 /* all except 570, 600e/x, 770e, 770x */
fe98a52c 3588 if ((rc = fan_get_status_safe(&status)) < 0)
56b6aeb0
HMH		 3589 return rc;
3590
d8fd94d9 3591 if (unlikely(tp_features.fan_ctrl_status_undef)) {
56b6aeb0 3592 if (status != fan_control_initial_status)
d8fd94d9 3593 tp_features.fan_ctrl_status_undef = 0;
56b6aeb0
HMH		 3594 else
3595 /* Return most likely status. In fact, it
3596 * might be the only possible status */
efa27145 3597 status = TP_EC_FAN_AUTO;
56b6aeb0
HMH		 3598 }
3599
3600 len += sprintf(p + len, "status:\t\t%s\n",
3601 (status != 0) ? "enabled" : "disabled");
3602
56b6aeb0
HMH		 3603 if ((rc = fan_get_speed(&speed)) < 0)
3604 return rc;
3605
3606 len += sprintf(p + len, "speed:\t\t%d\n", speed);
3607
efa27145 3608 if (status & TP_EC_FAN_FULLSPEED)
56b6aeb0
HMH		 3609 /* Disengaged mode takes precedence */
3610 len += sprintf(p + len, "level:\t\tdisengaged\n");
efa27145 3611 else if (status & TP_EC_FAN_AUTO)
56b6aeb0
HMH		 3612 len += sprintf(p + len, "level:\t\tauto\n");
3613 else
3614 len += sprintf(p + len, "level:\t\t%d\n", status);
3615 break;
3616
efa27145 3617 case TPACPI_FAN_NONE:
56b6aeb0
HMH		 3618 default:
3619 len += sprintf(p + len, "status:\t\tnot supported\n");
3620 }
3621
efa27145 3622 if (fan_control_commands & TPACPI_FAN_CMD_LEVEL) {
56b6aeb0
HMH		 3623 len += sprintf(p + len, "commands:\tlevel <level>");
3624
3625 switch (fan_control_access_mode) {
efa27145 3626 case TPACPI_FAN_WR_ACPI_SFAN:
56b6aeb0
HMH		 3627 len += sprintf(p + len, " (<level> is 0-7)\n");
3628 break;
3629
3630 default:
3631 len += sprintf(p + len, " (<level> is 0-7, "
fe98a52c 3632 "auto, disengaged, full-speed)\n");
56b6aeb0
HMH		 3633 break;
3634 }
3635 }
18ad7996 3636
efa27145 3637 if (fan_control_commands & TPACPI_FAN_CMD_ENABLE)
56b6aeb0
HMH		 3638 len += sprintf(p + len, "commands:\tenable, disable\n"
3639 "commands:\twatchdog <timeout> (<timeout> is 0 (off), "
3640 "1-120 (seconds))\n");
1da177e4 3641
efa27145 3642 if (fan_control_commands & TPACPI_FAN_CMD_SPEED)
56b6aeb0
HMH		 3643 len += sprintf(p + len, "commands:\tspeed <speed>"
3644 " (<speed> is 0-65535)\n");
3645
3646 return len;
78f81cc4
BD		 3647}
3648
18ad7996
HMH		 3649static int fan_write_cmd_level(const char *cmd, int *rc)
3650{
3651 int level;
3652
a12095c2 3653 if (strlencmp(cmd, "level auto") == 0)
efa27145 3654 level = TP_EC_FAN_AUTO;
fe98a52c
HMH		 3655 else if ((strlencmp(cmd, "level disengaged") == 0) |
3656 (strlencmp(cmd, "level full-speed") == 0))
efa27145 3657 level = TP_EC_FAN_FULLSPEED;
a12095c2 3658 else if (sscanf(cmd, "level %d", &level) != 1)
18ad7996
HMH		 3659 return 0;
3660
fe98a52c 3661 if ((*rc = fan_set_level_safe(level)) == -ENXIO)
18ad7996
HMH		 3662 printk(IBM_ERR "level command accepted for unsupported "
3663 "access mode %d", fan_control_access_mode);
3664
3665 return 1;
3666}
3667
3668static int fan_write_cmd_enable(const char *cmd, int *rc)
3669{
3670 if (strlencmp(cmd, "enable") != 0)
3671 return 0;
3672
3673 if ((*rc = fan_set_enable()) == -ENXIO)
3674 printk(IBM_ERR "enable command accepted for unsupported "
3675 "access mode %d", fan_control_access_mode);
3676
3677 return 1;
3678}
3679
3680static int fan_write_cmd_disable(const char *cmd, int *rc)
3681{
3682 if (strlencmp(cmd, "disable") != 0)
3683 return 0;
3684
3685 if ((*rc = fan_set_disable()) == -ENXIO)
3686 printk(IBM_ERR "disable command accepted for unsupported "
3687 "access mode %d", fan_control_access_mode);
3688
3689 return 1;
3690}
3691
3692static int fan_write_cmd_speed(const char *cmd, int *rc)
3693{
3694 int speed;
3695
a8b7a662
HMH		 3696 /* TODO:
3697 * Support speed <low> <medium> <high> ? */
3698
18ad7996
HMH		 3699 if (sscanf(cmd, "speed %d", &speed) != 1)
3700 return 0;
3701
3702 if ((*rc = fan_set_speed(speed)) == -ENXIO)
3703 printk(IBM_ERR "speed command accepted for unsupported "
3704 "access mode %d", fan_control_access_mode);
3705
3706 return 1;
3707}
3708
16663a87
HMH		 3709static int fan_write_cmd_watchdog(const char *cmd, int *rc)
3710{
3711 int interval;
3712
3713 if (sscanf(cmd, "watchdog %d", &interval) != 1)
3714 return 0;
3715
3716 if (interval < 0 || interval > 120)
3717 *rc = -EINVAL;
3718 else
3719 fan_watchdog_maxinterval = interval;
3720
3721 return 1;
3722}
3723
18ad7996
HMH		 3724static int fan_write(char *buf)
3725{
3726 char *cmd;
3727 int rc = 0;
3728
3729 while (!rc && (cmd = next_cmd(&buf))) {
efa27145 3730 if (!((fan_control_commands & TPACPI_FAN_CMD_LEVEL) &&
18ad7996 3731 fan_write_cmd_level(cmd, &rc)) &&
efa27145 3732 !((fan_control_commands & TPACPI_FAN_CMD_ENABLE) &&
18ad7996 3733 (fan_write_cmd_enable(cmd, &rc) ||
16663a87
HMH		 3734 fan_write_cmd_disable(cmd, &rc) ||
3735 fan_write_cmd_watchdog(cmd, &rc))) &&
efa27145 3736 !((fan_control_commands & TPACPI_FAN_CMD_SPEED) &&
18ad7996
HMH		 3737 fan_write_cmd_speed(cmd, &rc))
3738 )
3739 rc = -EINVAL;
16663a87
HMH		 3740 else if (!rc)
3741 fan_watchdog_reset();
18ad7996
HMH		 3742 }
3743
3744 return rc;
3745}
3746
a5763f22
HMH		 3747static struct ibm_struct fan_driver_data = {
3748 .name = "fan",
3749 .read = fan_read,
3750 .write = fan_write,
3751 .exit = fan_exit,
a5763f22
HMH		 3752};
3753
56b6aeb0
HMH		 3754/****************************************************************************
3755 ****************************************************************************
3756 *
3757 * Infrastructure
3758 *
3759 ****************************************************************************
3760 ****************************************************************************/
3761
3762/* /proc support */
3763static struct proc_dir_entry *proc_dir = NULL;
16663a87 3764
56b6aeb0 3765/* Subdriver registry */
a5763f22
HMH		 3766static LIST_HEAD(tpacpi_all_drivers);
3767
1da177e4 3768
56b6aeb0
HMH		 3769/*
3770 * Module and infrastructure proble, init and exit handling
3771 */
1da177e4 3772
fe08bc4b 3773#ifdef CONFIG_THINKPAD_ACPI_DEBUG
a5763f22 3774static const char * __init str_supported(int is_supported)
fe08bc4b 3775{
a5763f22 3776 static char text_unsupported[] __initdata = "not supported";
fe08bc4b 3777
a5763f22 3778 return (is_supported)? &text_unsupported[4] : &text_unsupported[0];
fe08bc4b
HMH		 3779}
3780#endif /* CONFIG_THINKPAD_ACPI_DEBUG */
3781
a5763f22 3782static int __init ibm_init(struct ibm_init_struct *iibm)
1da177e4
LT		 3783{
3784 int ret;
a5763f22 3785 struct ibm_struct *ibm = iibm->data;
1da177e4
LT		 3786 struct proc_dir_entry *entry;
3787
a5763f22
HMH		 3788 BUG_ON(ibm == NULL);
3789
3790 INIT_LIST_HEAD(&ibm->all_drivers);
3791
92641177 3792 if (ibm->flags.experimental && !experimental)
1da177e4
LT		 3793 return 0;
3794
fe08bc4b
HMH		 3795 dbg_printk(TPACPI_DBG_INIT,
3796 "probing for %s\n", ibm->name);
3797
a5763f22
HMH		 3798 if (iibm->init) {
3799 ret = iibm->init(iibm);
5fba344c
HMH		 3800 if (ret > 0)
3801 return 0; /* probe failed */
3802 if (ret)
1da177e4 3803 return ret;
a5763f22 3804
92641177 3805 ibm->flags.init_called = 1;
1da177e4
LT		 3806 }
3807
8d376cd6
HMH		 3808 if (ibm->acpi) {
3809 if (ibm->acpi->hid) {
3810 ret = register_tpacpi_subdriver(ibm);
3811 if (ret)
3812 goto err_out;
3813 }
5fba344c 3814
8d376cd6
HMH		 3815 if (ibm->acpi->notify) {
3816 ret = setup_acpi_notify(ibm);
3817 if (ret == -ENODEV) {
3818 printk(IBM_NOTICE "disabling subdriver %s\n",
3819 ibm->name);
3820 ret = 0;
3821 goto err_out;
3822 }
3823 if (ret < 0)
3824 goto err_out;
5fba344c 3825 }
5fba344c
HMH		 3826 }
3827
fe08bc4b
HMH		 3828 dbg_printk(TPACPI_DBG_INIT,
3829 "%s installed\n", ibm->name);
3830
78f81cc4
BD		 3831 if (ibm->read) {
3832 entry = create_proc_entry(ibm->name,
3833 S_IFREG | S_IRUGO | S_IWUSR,
3834 proc_dir);
3835 if (!entry) {
3836 printk(IBM_ERR "unable to create proc entry %s\n",
3837 ibm->name);
5fba344c
HMH		 3838 ret = -ENODEV;
3839 goto err_out;
78f81cc4
BD		 3840 }
3841 entry->owner = THIS_MODULE;
3842 entry->data = ibm;
8d376cd6 3843 entry->read_proc = &dispatch_procfs_read;
78f81cc4 3844 if (ibm->write)
8d376cd6 3845 entry->write_proc = &dispatch_procfs_write;
92641177 3846 ibm->flags.proc_created = 1;
78f81cc4 3847 }
1da177e4 3848
a5763f22
HMH		 3849 list_add_tail(&ibm->all_drivers, &tpacpi_all_drivers);
3850
1da177e4 3851 return 0;
5fba344c
HMH		 3852
3853err_out:
fe08bc4b
HMH		 3854 dbg_printk(TPACPI_DBG_INIT,
3855 "%s: at error exit path with result %d\n",
3856 ibm->name, ret);
3857
5fba344c
HMH		 3858 ibm_exit(ibm);
3859 return (ret < 0)? ret : 0;
1da177e4
LT		 3860}
3861
3862static void ibm_exit(struct ibm_struct *ibm)
3863{
fe08bc4b 3864 dbg_printk(TPACPI_DBG_EXIT, "removing %s\n", ibm->name);
a5763f22
HMH		 3865
3866 list_del_init(&ibm->all_drivers);
3867
8d376cd6 3868 if (ibm->flags.acpi_notify_installed) {
fe08bc4b
HMH		 3869 dbg_printk(TPACPI_DBG_EXIT,
3870 "%s: acpi_remove_notify_handler\n", ibm->name);
8d376cd6
HMH		 3871 BUG_ON(!ibm->acpi);
3872 acpi_remove_notify_handler(*ibm->acpi->handle,
3873 ibm->acpi->type,
3874 dispatch_acpi_notify);
3875 ibm->flags.acpi_notify_installed = 0;
3876 ibm->flags.acpi_notify_installed = 0;
5fba344c 3877 }
1da177e4 3878
92641177 3879 if (ibm->flags.proc_created) {
fe08bc4b
HMH		 3880 dbg_printk(TPACPI_DBG_EXIT,
3881 "%s: remove_proc_entry\n", ibm->name);
1da177e4 3882 remove_proc_entry(ibm->name, proc_dir);
92641177 3883 ibm->flags.proc_created = 0;
5fba344c 3884 }
1da177e4 3885
8d376cd6 3886 if (ibm->flags.acpi_driver_registered) {
fe08bc4b
HMH		 3887 dbg_printk(TPACPI_DBG_EXIT,
3888 "%s: acpi_bus_unregister_driver\n", ibm->name);
8d376cd6
HMH		 3889 BUG_ON(!ibm->acpi);
3890 acpi_bus_unregister_driver(ibm->acpi->driver);
3891 kfree(ibm->acpi->driver);
3892 ibm->acpi->driver = NULL;
3893 ibm->flags.acpi_driver_registered = 0;
5fba344c
HMH		 3894 }
3895
92641177 3896 if (ibm->flags.init_called && ibm->exit) {
5fba344c 3897 ibm->exit();
92641177 3898 ibm->flags.init_called = 0;
1da177e4 3899 }
a5763f22
HMH		 3900
3901 dbg_printk(TPACPI_DBG_INIT, "finished removing %s\n", ibm->name);
1da177e4
LT		 3902}
3903
56b6aeb0
HMH		 3904/* Probing */
3905
3906static char *ibm_thinkpad_ec_found = NULL;
3907
3908static char* __init check_dmi_for_ec(void)
1da177e4 3909{
56b6aeb0
HMH		 3910 struct dmi_device *dev = NULL;
3911 char ec_fw_string[18];
1da177e4 3912
56b6aeb0
HMH		 3913 /*
3914 * ThinkPad T23 or newer, A31 or newer, R50e or newer,
3915 * X32 or newer, all Z series; Some models must have an
3916 * up-to-date BIOS or they will not be detected.
3917 *
3918 * See http://thinkwiki.org/wiki/List_of_DMI_IDs
3919 */
3920 while ((dev = dmi_find_device(DMI_DEV_TYPE_OEM_STRING, NULL, dev))) {
3921 if (sscanf(dev->name,
3922 "IBM ThinkPad Embedded Controller -[%17c",
3923 ec_fw_string) == 1) {
3924 ec_fw_string[sizeof(ec_fw_string) - 1] = 0;
3925 ec_fw_string[strcspn(ec_fw_string, " ]")] = 0;
3926 return kstrdup(ec_fw_string, GFP_KERNEL);
78f81cc4 3927 }
1da177e4 3928 }
56b6aeb0 3929 return NULL;
1da177e4
LT		 3930}
3931
5fba344c
HMH		 3932static int __init probe_for_thinkpad(void)
3933{
3934 int is_thinkpad;
3935
3936 if (acpi_disabled)
3937 return -ENODEV;
3938
3939 /*
3940 * Non-ancient models have better DMI tagging, but very old models
3941 * don't.
3942 */
3943 is_thinkpad = dmi_name_in_vendors("ThinkPad");
3944
3945 /* ec is required because many other handles are relative to it */
8d376cd6 3946 IBM_ACPIHANDLE_INIT(ec);
5fba344c
HMH		 3947 if (!ec_handle) {
3948 if (is_thinkpad)
3949 printk(IBM_ERR
3950 "Not yet supported ThinkPad detected!\n");
3951 return -ENODEV;
3952 }
3953
0dcef77c
HMH		 3954 /*
3955 * Risks a regression on very old machines, but reduces potential
3956 * false positives a damn great deal
3957 */
3958 if (!is_thinkpad)
3959 is_thinkpad = dmi_name_in_vendors("IBM");
3960
3961 if (!is_thinkpad && !force_load)
3962 return -ENODEV;
3963
5fba344c
HMH		 3964 return 0;
3965}
3966
3967
56b6aeb0 3968/* Module init, exit, parameters */
1da177e4 3969
a5763f22
HMH		 3970static struct ibm_init_struct ibms_init[] __initdata = {
3971 {
3972 .init = thinkpad_acpi_driver_init,
3973 .data = &thinkpad_acpi_driver_data,
3974 },
3975 {
3976 .init = hotkey_init,
3977 .data = &hotkey_driver_data,
3978 },
3979 {
3980 .init = bluetooth_init,
3981 .data = &bluetooth_driver_data,
3982 },
3983 {
3984 .init = wan_init,
3985 .data = &wan_driver_data,
3986 },
3987 {
3988 .init = video_init,
3989 .data = &video_driver_data,
3990 },
3991 {
3992 .init = light_init,
3993 .data = &light_driver_data,
3994 },
3995#ifdef CONFIG_THINKPAD_ACPI_DOCK
3996 {
3997 .init = dock_init,
3998 .data = &dock_driver_data[0],
3999 },
4000 {
d94a7f16 4001 .init = dock_init2,
a5763f22
HMH		 4002 .data = &dock_driver_data[1],
4003 },
4004#endif
4005#ifdef CONFIG_THINKPAD_ACPI_BAY
4006 {
4007 .init = bay_init,
4008 .data = &bay_driver_data,
4009 },
4010#endif
4011 {
4012 .init = cmos_init,
4013 .data = &cmos_driver_data,
4014 },
4015 {
4016 .init = led_init,
4017 .data = &led_driver_data,
4018 },
4019 {
4020 .init = beep_init,
4021 .data = &beep_driver_data,
4022 },
4023 {
4024 .init = thermal_init,
4025 .data = &thermal_driver_data,
4026 },
4027 {
4028 .data = &ecdump_driver_data,
4029 },
4030 {
4031 .init = brightness_init,
4032 .data = &brightness_driver_data,
4033 },
4034 {
4035 .data = &volume_driver_data,
4036 },
4037 {
4038 .init = fan_init,
4039 .data = &fan_driver_data,
4040 },
4041};
4042
3945ac36 4043static int __init set_ibm_param(const char *val, struct kernel_param *kp)
1da177e4
LT		 4044{
4045 unsigned int i;
a5763f22 4046 struct ibm_struct *ibm;
1da177e4 4047
a5763f22
HMH		 4048 for (i = 0; i < ARRAY_SIZE(ibms_init); i++) {
4049 ibm = ibms_init[i].data;
4050 BUG_ON(ibm == NULL);
4051
4052 if (strcmp(ibm->name, kp->name) == 0 && ibm->write) {
4053 if (strlen(val) > sizeof(ibms_init[i].param) - 2)
78f81cc4 4054 return -ENOSPC;
a5763f22
HMH		 4055 strcpy(ibms_init[i].param, val);
4056 strcat(ibms_init[i].param, ",");
78f81cc4
BD		 4057 return 0;
4058 }
a5763f22 4059 }
1da177e4 4060
1da177e4
LT		 4061 return -EINVAL;
4062}
4063
56b6aeb0
HMH		 4064static int experimental;
4065module_param(experimental, int, 0);
4066
132ce091
HMH		 4067static u32 dbg_level;
4068module_param_named(debug, dbg_level, uint, 0);
4069
0dcef77c
HMH		 4070static int force_load;
4071module_param(force_load, int, 0);
4072
ecf2a80a
HMH		 4073static int fan_control_allowed;
4074module_param_named(fan_control, fan_control_allowed, int, 0);
4075
1da177e4
LT		 4076#define IBM_PARAM(feature) \
4077 module_param_call(feature, set_ibm_param, NULL, NULL, 0)
4078
78f81cc4
BD		 4079IBM_PARAM(hotkey);
4080IBM_PARAM(bluetooth);
4081IBM_PARAM(video);
4082IBM_PARAM(light);
85998248 4083#ifdef CONFIG_THINKPAD_ACPI_DOCK
78f81cc4 4084IBM_PARAM(dock);
63e5f248 4085#endif
85998248 4086#ifdef CONFIG_THINKPAD_ACPI_BAY
78f81cc4 4087IBM_PARAM(bay);
85998248 4088#endif /* CONFIG_THINKPAD_ACPI_BAY */
78f81cc4
BD		 4089IBM_PARAM(cmos);
4090IBM_PARAM(led);
4091IBM_PARAM(beep);
4092IBM_PARAM(ecdump);
4093IBM_PARAM(brightness);
4094IBM_PARAM(volume);
4095IBM_PARAM(fan);
4096
1def7115 4097static int __init thinkpad_acpi_module_init(void)
1da177e4
LT		 4098{
4099 int ret, i;
4100
54ae1501 4101 /* Driver-level probe */
5fba344c
HMH		 4102 ret = probe_for_thinkpad();
4103 if (ret)
4104 return ret;
1da177e4 4105
54ae1501 4106 /* Driver initialization */
60eb0b35 4107 ibm_thinkpad_ec_found = check_dmi_for_ec();
8d376cd6
HMH		 4108 IBM_ACPIHANDLE_INIT(ecrd);
4109 IBM_ACPIHANDLE_INIT(ecwr);
1da177e4 4110
8d376cd6 4111 proc_dir = proc_mkdir(IBM_PROC_DIR, acpi_root_dir);
1da177e4 4112 if (!proc_dir) {
8d376cd6 4113 printk(IBM_ERR "unable to create proc dir " IBM_PROC_DIR);
1def7115 4114 thinkpad_acpi_module_exit();
1da177e4
LT		 4115 return -ENODEV;
4116 }
4117 proc_dir->owner = THIS_MODULE;
78f81cc4 4118
54ae1501
HMH		 4119 ret = platform_driver_register(&tpacpi_pdriver);
4120 if (ret) {
4121 printk(IBM_ERR "unable to register platform driver\n");
4122 thinkpad_acpi_module_exit();
4123 return ret;
4124 }
176750d6
HMH		 4125 ret = tpacpi_create_driver_attributes(&tpacpi_pdriver.driver);
4126 if (ret) {
4127 printk(IBM_ERR "unable to create sysfs driver attributes\n");
4128 thinkpad_acpi_module_exit();
4129 return ret;
4130 }
4131
54ae1501
HMH		 4132
4133 /* Device initialization */
4134 tpacpi_pdev = platform_device_register_simple(IBM_DRVR_NAME, -1,
4135 NULL, 0);
4136 if (IS_ERR(tpacpi_pdev)) {
4137 ret = PTR_ERR(tpacpi_pdev);
4138 tpacpi_pdev = NULL;
4139 printk(IBM_ERR "unable to register platform device\n");
4140 thinkpad_acpi_module_exit();
4141 return ret;
4142 }
4143 tpacpi_hwmon = hwmon_device_register(&tpacpi_pdev->dev);
4144 if (IS_ERR(tpacpi_hwmon)) {
4145 ret = PTR_ERR(tpacpi_hwmon);
4146 tpacpi_hwmon = NULL;
4147 printk(IBM_ERR "unable to register hwmon device\n");
4148 thinkpad_acpi_module_exit();
4149 return ret;
4150 }
a5763f22
HMH		 4151 for (i = 0; i < ARRAY_SIZE(ibms_init); i++) {
4152 ret = ibm_init(&ibms_init[i]);
4153 if (ret >= 0 && *ibms_init[i].param)
4154 ret = ibms_init[i].data->write(ibms_init[i].param);
1da177e4 4155 if (ret < 0) {
1def7115 4156 thinkpad_acpi_module_exit();
1da177e4
LT		 4157 return ret;
4158 }
4159 }
4160
4161 return 0;
4162}
4163
1def7115 4164static void thinkpad_acpi_module_exit(void)
56b6aeb0 4165{
a5763f22
HMH		 4166 struct ibm_struct *ibm, *itmp;
4167
4168 list_for_each_entry_safe_reverse(ibm, itmp,
4169 &tpacpi_all_drivers,
4170 all_drivers) {
4171 ibm_exit(ibm);
4172 }
56b6aeb0 4173
a5763f22 4174 dbg_printk(TPACPI_DBG_INIT, "finished subdriver exit path...\n");
56b6aeb0 4175
54ae1501
HMH		 4176 if (tpacpi_hwmon)
4177 hwmon_device_unregister(tpacpi_hwmon);
4178
4179 if (tpacpi_pdev)
4180 platform_device_unregister(tpacpi_pdev);
4181
176750d6 4182 tpacpi_remove_driver_attributes(&tpacpi_pdriver.driver);
54ae1501
HMH		 4183 platform_driver_unregister(&tpacpi_pdriver);
4184
56b6aeb0 4185 if (proc_dir)
8d376cd6 4186 remove_proc_entry(IBM_PROC_DIR, acpi_root_dir);
56b6aeb0 4187
8d376cd6 4188 kfree(ibm_thinkpad_ec_found);
56b6aeb0
HMH		 4189}
4190
1def7115
HMH		 4191module_init(thinkpad_acpi_module_init);
4192module_exit(thinkpad_acpi_module_exit);
Linux kernel - Deliverables
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