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ACPI: thinkpad_acpi: use bool for boolean parameters
[linux-2.6/linux-acpi-2.6/ibm-acpi-2.6.git] / drivers / misc / thinkpad_acpi.c
blob44aa8c92f91f599d7cf46d478e34e896af5b2ab6
1 /*
2 * thinkpad_acpi.c - ThinkPad ACPI Extras
3 *
4 *
5 * Copyright (C) 2004-2005 Borislav Deianov <borislav@users.sf.net>
6 * Copyright (C) 2006-2007 Henrique de Moraes Holschuh <hmh@hmh.eng.br>
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
20 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
21 * 02110-1301, USA.
22 */
23
24 #define IBM_VERSION "0.14"
25 #define TPACPI_SYSFS_VERSION 0x010000
26
27 /*
28 * Changelog:
29 * 2007-03-27 0.14 renamed to thinkpad_acpi and moved to
30 * drivers/misc.
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.
35 *
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
45 * 2005-01-16 0.10 fix module loading on R30, R31
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
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
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
83 */
84
85 #include "thinkpad_acpi.h"
86
87 MODULE_AUTHOR("Borislav Deianov, Henrique de Moraes Holschuh");
88 MODULE_DESCRIPTION(IBM_DESC);
89 MODULE_VERSION(IBM_VERSION);
90 MODULE_LICENSE("GPL");
91
92 /* Please remove this in year 2009 */
93 MODULE_ALIAS("ibm_acpi");
94
95 /*
96 * DMI matching for module autoloading
97 *
98 * See http://thinkwiki.org/wiki/List_of_DMI_IDs
99 * See http://thinkwiki.org/wiki/BIOS_Upgrade_Downloads
100 *
101 * Only models listed in thinkwiki will be supported, so add yours
102 * if it is not there yet.
103 */
104 #define IBM_BIOS_MODULE_ALIAS(__type) \
105 MODULE_ALIAS("dmi:bvnIBM:bvr" __type "ET??WW")
106
107 /* Non-ancient thinkpads */
108 MODULE_ALIAS("dmi:bvnIBM:*:svnIBM:*:pvrThinkPad*:rvnIBM:*");
109 MODULE_ALIAS("dmi:bvnLENOVO:*:svnLENOVO:*:pvrThinkPad*:rvnLENOVO:*");
110
111 /* Ancient thinkpad BIOSes have to be identified by
112 * BIOS type or model number, and there are far less
113 * BIOS types than model numbers... */
114 IBM_BIOS_MODULE_ALIAS("I[B,D,H,I,M,N,O,T,W,V,Y,Z]");
115 IBM_BIOS_MODULE_ALIAS("1[0,3,6,8,A-G,I,K,M-P,S,T]");
116 IBM_BIOS_MODULE_ALIAS("K[U,X-Z]");
117
118 #define __unused __attribute__ ((unused))
119
120 /****************************************************************************
121 ****************************************************************************
122 *
123 * ACPI Helpers and device model
124 *
125 ****************************************************************************
126 ****************************************************************************/
127
128 /*************************************************************************
129 * ACPI basic handles
130 */
131
132 static acpi_handle root_handle;
133
134 #define IBM_HANDLE(object, parent, paths...) \
135 static acpi_handle object##_handle; \
136 static acpi_handle *object##_parent = &parent##_handle; \
137 static char *object##_path; \
138 static char *object##_paths[] = { paths }
139
140 IBM_HANDLE(ec, root, "\\_SB.PCI0.ISA.EC0", /* 240, 240x */
141 "\\_SB.PCI.ISA.EC", /* 570 */
142 "\\_SB.PCI0.ISA0.EC0", /* 600e/x, 770e, 770x */
143 "\\_SB.PCI0.ISA.EC", /* A21e, A2xm/p, T20-22, X20-21 */
144 "\\_SB.PCI0.AD4S.EC0", /* i1400, R30 */
145 "\\_SB.PCI0.ICH3.EC0", /* R31 */
146 "\\_SB.PCI0.LPC.EC", /* all others */
147 );
148
149 IBM_HANDLE(ecrd, ec, "ECRD"); /* 570 */
150 IBM_HANDLE(ecwr, ec, "ECWR"); /* 570 */
151
152
153 /*************************************************************************
154 * Misc ACPI handles
155 */
156
157 IBM_HANDLE(cmos, root, "\\UCMS", /* R50, R50e, R50p, R51, T4x, X31, X40 */
158 "\\CMOS", /* A3x, G4x, R32, T23, T30, X22-24, X30 */
159 "\\CMS", /* R40, R40e */
160 ); /* all others */
161
162 IBM_HANDLE(hkey, ec, "\\_SB.HKEY", /* 600e/x, 770e, 770x */
163 "^HKEY", /* R30, R31 */
164 "HKEY", /* all others */
165 ); /* 570 */
166
167
168 /*************************************************************************
169 * ACPI helpers
170 */
171
172 static int acpi_evalf(acpi_handle handle,
173 void *res, char *method, char *fmt, ...)
174 {
175 char *fmt0 = fmt;
176 struct acpi_object_list params;
177 union acpi_object in_objs[IBM_MAX_ACPI_ARGS];
178 struct acpi_buffer result, *resultp;
179 union acpi_object out_obj;
180 acpi_status status;
181 va_list ap;
182 char res_type;
183 int success;
184 int quiet;
185
186 if (!*fmt) {
187 printk(IBM_ERR "acpi_evalf() called with empty format\n");
188 return 0;
189 }
190
191 if (*fmt == 'q') {
192 quiet = 1;
193 fmt++;
194 } else
195 quiet = 0;
196
197 res_type = *(fmt++);
198
199 params.count = 0;
200 params.pointer = &in_objs[0];
201
202 va_start(ap, fmt);
203 while (*fmt) {
204 char c = *(fmt++);
205 switch (c) {
206 case 'd': /* int */
207 in_objs[params.count].integer.value = va_arg(ap, int);
208 in_objs[params.count++].type = ACPI_TYPE_INTEGER;
209 break;
210 /* add more types as needed */
211 default:
212 printk(IBM_ERR "acpi_evalf() called "
213 "with invalid format character '%c'\n", c);
214 return 0;
215 }
216 }
217 va_end(ap);
218
219 if (res_type != 'v') {
220 result.length = sizeof(out_obj);
221 result.pointer = &out_obj;
222 resultp = &result;
223 } else
224 resultp = NULL;
225
226 status = acpi_evaluate_object(handle, method, &params, resultp);
227
228 switch (res_type) {
229 case 'd': /* int */
230 if (res)
231 *(int *)res = out_obj.integer.value;
232 success = status == AE_OK && out_obj.type == ACPI_TYPE_INTEGER;
233 break;
234 case 'v': /* void */
235 success = status == AE_OK;
236 break;
237 /* add more types as needed */
238 default:
239 printk(IBM_ERR "acpi_evalf() called "
240 "with invalid format character '%c'\n", res_type);
241 return 0;
242 }
243
244 if (!success && !quiet)
245 printk(IBM_ERR "acpi_evalf(%s, %s, ...) failed: %d\n",
246 method, fmt0, status);
247
248 return success;
249 }
250
251 static void __unused acpi_print_int(acpi_handle handle, char *method)
252 {
253 int i;
254
255 if (acpi_evalf(handle, &i, method, "d"))
256 printk(IBM_INFO "%s = 0x%x\n", method, i);
257 else
258 printk(IBM_ERR "error calling %s\n", method);
259 }
260
261 static int acpi_ec_read(int i, u8 * p)
262 {
263 int v;
264
265 if (ecrd_handle) {
266 if (!acpi_evalf(ecrd_handle, &v, NULL, "dd", i))
267 return 0;
268 *p = v;
269 } else {
270 if (ec_read(i, p) < 0)
271 return 0;
272 }
273
274 return 1;
275 }
276
277 static int acpi_ec_write(int i, u8 v)
278 {
279 if (ecwr_handle) {
280 if (!acpi_evalf(ecwr_handle, NULL, NULL, "vdd", i, v))
281 return 0;
282 } else {
283 if (ec_write(i, v) < 0)
284 return 0;
285 }
286
287 return 1;
288 }
289
290 static int _sta(acpi_handle handle)
291 {
292 int status;
293
294 if (!handle || !acpi_evalf(handle, &status, "_STA", "d"))
295 status = 0;
296
297 return status;
298 }
299
300 static int issue_thinkpad_cmos_command(int cmos_cmd)
301 {
302 if (!cmos_handle)
303 return -ENXIO;
304
305 if (!acpi_evalf(cmos_handle, NULL, NULL, "vd", cmos_cmd))
306 return -EIO;
307
308 return 0;
309 }
310
311 /*************************************************************************
312 * ACPI device model
313 */
314
315 static void drv_acpi_handle_init(char *name,
316 acpi_handle *handle, acpi_handle parent,
317 char **paths, int num_paths, char **path)
318 {
319 int i;
320 acpi_status status;
321
322 vdbg_printk(TPACPI_DBG_INIT, "trying to locate ACPI handle for %s\n",
323 name);
324
325 for (i = 0; i < num_paths; i++) {
326 status = acpi_get_handle(parent, paths[i], handle);
327 if (ACPI_SUCCESS(status)) {
328 *path = paths[i];
329 dbg_printk(TPACPI_DBG_INIT,
330 "Found ACPI handle %s for %s\n",
331 *path, name);
332 return;
333 }
334 }
335
336 vdbg_printk(TPACPI_DBG_INIT, "ACPI handle for %s not found\n",
337 name);
338 *handle = NULL;
339 }
340
341 static void dispatch_acpi_notify(acpi_handle handle, u32 event, void *data)
342 {
343 struct ibm_struct *ibm = data;
344
345 if (!ibm || !ibm->acpi || !ibm->acpi->notify)
346 return;
347
348 ibm->acpi->notify(ibm, event);
349 }
350
351 static int __init setup_acpi_notify(struct ibm_struct *ibm)
352 {
353 acpi_status status;
354 int rc;
355
356 BUG_ON(!ibm->acpi);
357
358 if (!*ibm->acpi->handle)
359 return 0;
360
361 vdbg_printk(TPACPI_DBG_INIT,
362 "setting up ACPI notify for %s\n", ibm->name);
363
364 rc = acpi_bus_get_device(*ibm->acpi->handle, &ibm->acpi->device);
365 if (rc < 0) {
366 printk(IBM_ERR "acpi_bus_get_device(%s) failed: %d\n",
367 ibm->name, rc);
368 return -ENODEV;
369 }
370
371 acpi_driver_data(ibm->acpi->device) = ibm;
372 sprintf(acpi_device_class(ibm->acpi->device), "%s/%s",
373 IBM_ACPI_EVENT_PREFIX,
374 ibm->name);
375
376 status = acpi_install_notify_handler(*ibm->acpi->handle,
377 ibm->acpi->type, dispatch_acpi_notify, ibm);
378 if (ACPI_FAILURE(status)) {
379 if (status == AE_ALREADY_EXISTS) {
380 printk(IBM_NOTICE "another device driver is already handling %s events\n",
381 ibm->name);
382 } else {
383 printk(IBM_ERR "acpi_install_notify_handler(%s) failed: %d\n",
384 ibm->name, status);
385 }
386 return -ENODEV;
387 }
388 ibm->flags.acpi_notify_installed = 1;
389 return 0;
390 }
391
392 static int __init tpacpi_device_add(struct acpi_device *device)
393 {
394 return 0;
395 }
396
397 static int __init register_tpacpi_subdriver(struct ibm_struct *ibm)
398 {
399 int rc;
400
401 dbg_printk(TPACPI_DBG_INIT,
402 "registering %s as an ACPI driver\n", ibm->name);
403
404 BUG_ON(!ibm->acpi);
405
406 ibm->acpi->driver = kzalloc(sizeof(struct acpi_driver), GFP_KERNEL);
407 if (!ibm->acpi->driver) {
408 printk(IBM_ERR "kzalloc(ibm->driver) failed\n");
409 return -ENOMEM;
410 }
411
412 sprintf(ibm->acpi->driver->name, "%s_%s", IBM_NAME, ibm->name);
413 ibm->acpi->driver->ids = ibm->acpi->hid;
414 ibm->acpi->driver->ops.add = &tpacpi_device_add;
415
416 rc = acpi_bus_register_driver(ibm->acpi->driver);
417 if (rc < 0) {
418 printk(IBM_ERR "acpi_bus_register_driver(%s) failed: %d\n",
419 ibm->acpi->hid, rc);
420 kfree(ibm->acpi->driver);
421 ibm->acpi->driver = NULL;
422 } else if (!rc)
423 ibm->flags.acpi_driver_registered = 1;
424
425 return rc;
426 }
427
428
429 /****************************************************************************
430 ****************************************************************************
431 *
432 * Procfs Helpers
433 *
434 ****************************************************************************
435 ****************************************************************************/
436
437 static int dispatch_procfs_read(char *page, char **start, off_t off,
438 int count, int *eof, void *data)
439 {
440 struct ibm_struct *ibm = data;
441 int len;
442
443 if (!ibm || !ibm->read)
444 return -EINVAL;
445
446 len = ibm->read(page);
447 if (len < 0)
448 return len;
449
450 if (len <= off + count)
451 *eof = 1;
452 *start = page + off;
453 len -= off;
454 if (len > count)
455 len = count;
456 if (len < 0)
457 len = 0;
458
459 return len;
460 }
461
462 static int dispatch_procfs_write(struct file *file,
463 const char __user * userbuf,
464 unsigned long count, void *data)
465 {
466 struct ibm_struct *ibm = data;
467 char *kernbuf;
468 int ret;
469
470 if (!ibm || !ibm->write)
471 return -EINVAL;
472
473 kernbuf = kmalloc(count + 2, GFP_KERNEL);
474 if (!kernbuf)
475 return -ENOMEM;
476
477 if (copy_from_user(kernbuf, userbuf, count)) {
478 kfree(kernbuf);
479 return -EFAULT;
480 }
481
482 kernbuf[count] = 0;
483 strcat(kernbuf, ",");
484 ret = ibm->write(kernbuf);
485 if (ret == 0)
486 ret = count;
487
488 kfree(kernbuf);
489
490 return ret;
491 }
492
493 static char *next_cmd(char **cmds)
494 {
495 char *start = *cmds;
496 char *end;
497
498 while ((end = strchr(start, ',')) && end == start)
499 start = end + 1;
500
501 if (!end)
502 return NULL;
503
504 *end = 0;
505 *cmds = end + 1;
506 return start;
507 }
508
509
510 /****************************************************************************
511 ****************************************************************************
512 *
513 * Device model: input, hwmon and platform
514 *
515 ****************************************************************************
516 ****************************************************************************/
517
518 static struct platform_device *tpacpi_pdev;
519 static struct class_device *tpacpi_hwmon;
520 static struct input_dev *tpacpi_inputdev;
521
522
523 static int tpacpi_resume_handler(struct platform_device *pdev)
524 {
525 struct ibm_struct *ibm, *itmp;
526
527 list_for_each_entry_safe(ibm, itmp,
528 &tpacpi_all_drivers,
529 all_drivers) {
530 if (ibm->resume)
531 (ibm->resume)();
532 }
533
534 return 0;
535 }
536
537 static struct platform_driver tpacpi_pdriver = {
538 .driver = {
539 .name = IBM_DRVR_NAME,
540 .owner = THIS_MODULE,
541 },
542 .resume = tpacpi_resume_handler,
543 };
544
545
546 /*************************************************************************
547 * thinkpad-acpi driver attributes
548 */
549
550 /* interface_version --------------------------------------------------- */
551 static ssize_t tpacpi_driver_interface_version_show(
552 struct device_driver *drv,
553 char *buf)
554 {
555 return snprintf(buf, PAGE_SIZE, "0x%08x\n", TPACPI_SYSFS_VERSION);
556 }
557
558 static DRIVER_ATTR(interface_version, S_IRUGO,
559 tpacpi_driver_interface_version_show, NULL);
560
561 /* debug_level --------------------------------------------------------- */
562 static ssize_t tpacpi_driver_debug_show(struct device_driver *drv,
563 char *buf)
564 {
565 return snprintf(buf, PAGE_SIZE, "0x%04x\n", dbg_level);
566 }
567
568 static ssize_t tpacpi_driver_debug_store(struct device_driver *drv,
569 const char *buf, size_t count)
570 {
571 unsigned long t;
572
573 if (parse_strtoul(buf, 0xffff, &t))
574 return -EINVAL;
575
576 dbg_level = t;
577
578 return count;
579 }
580
581 static DRIVER_ATTR(debug_level, S_IWUSR | S_IRUGO,
582 tpacpi_driver_debug_show, tpacpi_driver_debug_store);
583
584 /* version ------------------------------------------------------------- */
585 static ssize_t tpacpi_driver_version_show(struct device_driver *drv,
586 char *buf)
587 {
588 return snprintf(buf, PAGE_SIZE, "%s v%s\n", IBM_DESC, IBM_VERSION);
589 }
590
591 static DRIVER_ATTR(version, S_IRUGO,
592 tpacpi_driver_version_show, NULL);
593
594 /* --------------------------------------------------------------------- */
595
596 static struct driver_attribute* tpacpi_driver_attributes[] = {
597 &driver_attr_debug_level, &driver_attr_version,
598 &driver_attr_interface_version,
599 };
600
601 static int __init tpacpi_create_driver_attributes(struct device_driver *drv)
602 {
603 int i, res;
604
605 i = 0;
606 res = 0;
607 while (!res && i < ARRAY_SIZE(tpacpi_driver_attributes)) {
608 res = driver_create_file(drv, tpacpi_driver_attributes[i]);
609 i++;
610 }
611
612 return res;
613 }
614
615 static void tpacpi_remove_driver_attributes(struct device_driver *drv)
616 {
617 int i;
618
619 for(i = 0; i < ARRAY_SIZE(tpacpi_driver_attributes); i++)
620 driver_remove_file(drv, tpacpi_driver_attributes[i]);
621 }
622
623 /*************************************************************************
624 * sysfs support helpers
625 */
626
627 struct attribute_set_obj {
628 struct attribute_set s;
629 struct attribute *a;
630 } __attribute__((packed));
631
632 static struct attribute_set *create_attr_set(unsigned int max_members,
633 const char* name)
634 {
635 struct attribute_set_obj *sobj;
636
637 if (max_members == 0)
638 return NULL;
639
640 /* Allocates space for implicit NULL at the end too */
641 sobj = kzalloc(sizeof(struct attribute_set_obj) +
642 max_members * sizeof(struct attribute *),
643 GFP_KERNEL);
644 if (!sobj)
645 return NULL;
646 sobj->s.max_members = max_members;
647 sobj->s.group.attrs = &sobj->a;
648 sobj->s.group.name = name;
649
650 return &sobj->s;
651 }
652
653 /* not multi-threaded safe, use it in a single thread per set */
654 static int add_to_attr_set(struct attribute_set* s, struct attribute *attr)
655 {
656 if (!s || !attr)
657 return -EINVAL;
658
659 if (s->members >= s->max_members)
660 return -ENOMEM;
661
662 s->group.attrs[s->members] = attr;
663 s->members++;
664
665 return 0;
666 }
667
668 static int add_many_to_attr_set(struct attribute_set* s,
669 struct attribute **attr,
670 unsigned int count)
671 {
672 int i, res;
673
674 for (i = 0; i < count; i++) {
675 res = add_to_attr_set(s, attr[i]);
676 if (res)
677 return res;
678 }
679
680 return 0;
681 }
682
683 static void delete_attr_set(struct attribute_set* s, struct kobject *kobj)
684 {
685 sysfs_remove_group(kobj, &s->group);
686 destroy_attr_set(s);
687 }
688
689 static int parse_strtoul(const char *buf,
690 unsigned long max, unsigned long *value)
691 {
692 char *endp;
693
694 *value = simple_strtoul(buf, &endp, 0);
695 while (*endp && isspace(*endp))
696 endp++;
697 if (*endp || *value > max)
698 return -EINVAL;
699
700 return 0;
701 }
702
703 /****************************************************************************
704 ****************************************************************************
705 *
706 * Subdrivers
707 *
708 ****************************************************************************
709 ****************************************************************************/
710
711 /*************************************************************************
712 * thinkpad-acpi init subdriver
713 */
714
715 static int __init thinkpad_acpi_driver_init(struct ibm_init_struct *iibm)
716 {
717 printk(IBM_INFO "%s v%s\n", IBM_DESC, IBM_VERSION);
718 printk(IBM_INFO "%s\n", IBM_URL);
719
720 if (ibm_thinkpad_ec_found)
721 printk(IBM_INFO "ThinkPad EC firmware %s\n",
722 ibm_thinkpad_ec_found);
723
724 return 0;
725 }
726
727 static int thinkpad_acpi_driver_read(char *p)
728 {
729 int len = 0;
730
731 len += sprintf(p + len, "driver:\t\t%s\n", IBM_DESC);
732 len += sprintf(p + len, "version:\t%s\n", IBM_VERSION);
733
734 return len;
735 }
736
737 static struct ibm_struct thinkpad_acpi_driver_data = {
738 .name = "driver",
739 .read = thinkpad_acpi_driver_read,
740 };
741
742 /*************************************************************************
743 * Hotkey subdriver
744 */
745
746 static int hotkey_orig_status;
747 static u32 hotkey_orig_mask;
748 static u32 hotkey_all_mask;
749 static u32 hotkey_reserved_mask;
750
751 static u16 hotkey_keycode_map[] = {
752 /* Scan Codes 0x00 to 0x0B: ACPI HKEY FN+F1..F12 */
753 KEY_FN_F1, KEY_FN_F2, KEY_FN_F3, KEY_SLEEP,
754 KEY_FN_F5, KEY_FN_F6, KEY_FN_F7, KEY_FN_F8,
755 KEY_FN_F9, KEY_FN_F10, KEY_FN_F11, KEY_SUSPEND,
756 /* Scan codes 0x0C to 0x0F: Other ACPI HKEY hot keys */
757 KEY_UNKNOWN, /* 0x0C: FN+BACKSPACE */
758 KEY_UNKNOWN, /* 0x0D: FN+INSERT */
759 KEY_UNKNOWN, /* 0x0E: FN+DELETE */
760 KEY_RESERVED, /* 0x0F: FN+HOME (brightness up) */
761 /* Scan codes 0x10 to 0x1F: Extended ACPI HKEY hot keys */
762 KEY_RESERVED, /* 0x10: FN+END (brightness down) */
763 KEY_RESERVED, /* 0x11: FN+PGUP (thinklight toggle) */
764 KEY_UNKNOWN, /* 0x12: FN+PGDOWN */
765 KEY_ZOOM, /* 0x13: FN+SPACE (zoom) */
766 KEY_RESERVED, /* 0x14: VOLUME UP */
767 KEY_RESERVED, /* 0x15: VOLUME DOWN */
768 KEY_RESERVED, /* 0x16: MUTE */
769 KEY_VENDOR, /* 0x17: Thinkpad/AccessIBM/Lenovo */
770 /* (assignments unknown, please report if found) */
771 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN,
772 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN,
773 };
774
775 static struct attribute_set *hotkey_dev_attributes;
776
777 static int hotkey_get_wlsw(int *status)
778 {
779 if (!acpi_evalf(hkey_handle, status, "WLSW", "d"))
780 return -EIO;
781 return 0;
782 }
783
784 /* sysfs hotkey enable ------------------------------------------------- */
785 static ssize_t hotkey_enable_show(struct device *dev,
786 struct device_attribute *attr,
787 char *buf)
788 {
789 int res, status;
790 u32 mask;
791
792 res = hotkey_get(&status, &mask);
793 if (res)
794 return res;
795
796 return snprintf(buf, PAGE_SIZE, "%d\n", status);
797 }
798
799 static ssize_t hotkey_enable_store(struct device *dev,
800 struct device_attribute *attr,
801 const char *buf, size_t count)
802 {
803 unsigned long t;
804 int res, status;
805 u32 mask;
806
807 if (parse_strtoul(buf, 1, &t))
808 return -EINVAL;
809
810 res = hotkey_get(&status, &mask);
811 if (!res)
812 res = hotkey_set(t, mask);
813
814 return (res) ? res : count;
815 }
816
817 static struct device_attribute dev_attr_hotkey_enable =
818 __ATTR(hotkey_enable, S_IWUSR | S_IRUGO,
819 hotkey_enable_show, hotkey_enable_store);
820
821 /* sysfs hotkey mask --------------------------------------------------- */
822 static ssize_t hotkey_mask_show(struct device *dev,
823 struct device_attribute *attr,
824 char *buf)
825 {
826 int res, status;
827 u32 mask;
828
829 res = hotkey_get(&status, &mask);
830 if (res)
831 return res;
832
833 return snprintf(buf, PAGE_SIZE, "0x%08x\n", mask);
834 }
835
836 static ssize_t hotkey_mask_store(struct device *dev,
837 struct device_attribute *attr,
838 const char *buf, size_t count)
839 {
840 unsigned long t;
841 int res, status;
842 u32 mask;
843
844 if (parse_strtoul(buf, 0xffffffffUL, &t))
845 return -EINVAL;
846
847 res = hotkey_get(&status, &mask);
848 if (!res)
849 hotkey_set(status, t);
850
851 return (res) ? res : count;
852 }
853
854 static struct device_attribute dev_attr_hotkey_mask =
855 __ATTR(hotkey_mask, S_IWUSR | S_IRUGO,
856 hotkey_mask_show, hotkey_mask_store);
857
858 /* sysfs hotkey bios_enabled ------------------------------------------- */
859 static ssize_t hotkey_bios_enabled_show(struct device *dev,
860 struct device_attribute *attr,
861 char *buf)
862 {
863 return snprintf(buf, PAGE_SIZE, "%d\n", hotkey_orig_status);
864 }
865
866 static struct device_attribute dev_attr_hotkey_bios_enabled =
867 __ATTR(hotkey_bios_enabled, S_IRUGO, hotkey_bios_enabled_show, NULL);
868
869 /* sysfs hotkey bios_mask ---------------------------------------------- */
870 static ssize_t hotkey_bios_mask_show(struct device *dev,
871 struct device_attribute *attr,
872 char *buf)
873 {
874 return snprintf(buf, PAGE_SIZE, "0x%08x\n", hotkey_orig_mask);
875 }
876
877 static struct device_attribute dev_attr_hotkey_bios_mask =
878 __ATTR(hotkey_bios_mask, S_IRUGO, hotkey_bios_mask_show, NULL);
879
880 /* sysfs hotkey all_mask ----------------------------------------------- */
881 static ssize_t hotkey_all_mask_show(struct device *dev,
882 struct device_attribute *attr,
883 char *buf)
884 {
885 return snprintf(buf, PAGE_SIZE, "0x%08x\n", hotkey_all_mask);
886 }
887
888 static struct device_attribute dev_attr_hotkey_all_mask =
889 __ATTR(hotkey_all_mask, S_IRUGO, hotkey_all_mask_show, NULL);
890
891 /* sysfs hotkey recommended_mask --------------------------------------- */
892 static ssize_t hotkey_recommended_mask_show(struct device *dev,
893 struct device_attribute *attr,
894 char *buf)
895 {
896 return snprintf(buf, PAGE_SIZE, "0x%08x\n",
897 hotkey_all_mask & ~hotkey_reserved_mask);
898 }
899
900 static struct device_attribute dev_attr_hotkey_recommended_mask =
901 __ATTR(hotkey_recommended_mask, S_IRUGO,
902 hotkey_recommended_mask_show, NULL);
903
904 /* sysfs hotkey radio_sw ----------------------------------------------- */
905 static ssize_t hotkey_radio_sw_show(struct device *dev,
906 struct device_attribute *attr,
907 char *buf)
908 {
909 int res, s;
910 res = hotkey_get_wlsw(&s);
911 if (res < 0)
912 return res;
913
914 return snprintf(buf, PAGE_SIZE, "%d\n", !!s);
915 }
916
917 static struct device_attribute dev_attr_hotkey_radio_sw =
918 __ATTR(hotkey_radio_sw, S_IRUGO, hotkey_radio_sw_show, NULL);
919
920 /* --------------------------------------------------------------------- */
921
922 static struct attribute *hotkey_mask_attributes[] = {
923 &dev_attr_hotkey_mask.attr,
924 &dev_attr_hotkey_bios_enabled.attr,
925 &dev_attr_hotkey_bios_mask.attr,
926 &dev_attr_hotkey_all_mask.attr,
927 &dev_attr_hotkey_recommended_mask.attr,
928 };
929
930 static int __init hotkey_init(struct ibm_init_struct *iibm)
931 {
932 int res, i;
933 int status;
934
935 vdbg_printk(TPACPI_DBG_INIT, "initializing hotkey subdriver\n");
936
937 BUG_ON(!tpacpi_inputdev);
938
939 IBM_ACPIHANDLE_INIT(hkey);
940 mutex_init(&hotkey_mutex);
941
942 /* hotkey not supported on 570 */
943 tp_features.hotkey = hkey_handle != NULL;
944
945 vdbg_printk(TPACPI_DBG_INIT, "hotkeys are %s\n",
946 str_supported(tp_features.hotkey));
947
948 if (tp_features.hotkey) {
949 hotkey_dev_attributes = create_attr_set(7, NULL);
950 if (!hotkey_dev_attributes)
951 return -ENOMEM;
952 res = add_to_attr_set(hotkey_dev_attributes,
953 &dev_attr_hotkey_enable.attr);
954 if (res)
955 return res;
956
957 /* mask not supported on 570, 600e/x, 770e, 770x, A21e, A2xm/p,
958 A30, R30, R31, T20-22, X20-21, X22-24 */
959 tp_features.hotkey_mask =
960 acpi_evalf(hkey_handle, NULL, "DHKN", "qv");
961
962 vdbg_printk(TPACPI_DBG_INIT, "hotkey masks are %s\n",
963 str_supported(tp_features.hotkey_mask));
964
965 if (tp_features.hotkey_mask) {
966 /* MHKA available in A31, R40, R40e, T4x, X31, and later */
967 if (!acpi_evalf(hkey_handle, &hotkey_all_mask,
968 "MHKA", "qd"))
969 hotkey_all_mask = 0x080cU; /* FN+F12, FN+F4, FN+F3 */
970 }
971
972 res = hotkey_get(&hotkey_orig_status, &hotkey_orig_mask);
973 if (!res && tp_features.hotkey_mask) {
974 res = add_many_to_attr_set(hotkey_dev_attributes,
975 hotkey_mask_attributes,
976 ARRAY_SIZE(hotkey_mask_attributes));
977 }
978
979 /* Not all thinkpads have a hardware radio switch */
980 if (!res && acpi_evalf(hkey_handle, &status, "WLSW", "qd")) {
981 tp_features.hotkey_wlsw = 1;
982 printk(IBM_INFO
983 "radio switch found; radios are %s\n",
984 enabled(status, 0));
985 res = add_to_attr_set(hotkey_dev_attributes,
986 &dev_attr_hotkey_radio_sw.attr);
987 }
988
989 if (!res)
990 res = register_attr_set_with_sysfs(
991 hotkey_dev_attributes,
992 &tpacpi_pdev->dev.kobj);
993 if (res)
994 return res;
995
996 #ifndef CONFIG_THINKPAD_ACPI_INPUT_ENABLED
997 for (i = 0; i < 12; i++)
998 hotkey_keycode_map[i] = KEY_UNKNOWN;
999 #endif /* ! CONFIG_THINKPAD_ACPI_INPUT_ENABLED */
1000
1001 set_bit(EV_KEY, tpacpi_inputdev->evbit);
1002 set_bit(EV_MSC, tpacpi_inputdev->evbit);
1003 set_bit(MSC_SCAN, tpacpi_inputdev->mscbit);
1004 tpacpi_inputdev->keycodesize = sizeof(hotkey_keycode_map[0]);
1005 tpacpi_inputdev->keycodemax = ARRAY_SIZE(hotkey_keycode_map);
1006 tpacpi_inputdev->keycode = &hotkey_keycode_map;
1007 for (i = 0; i < ARRAY_SIZE(hotkey_keycode_map); i++) {
1008 if (hotkey_keycode_map[i] != KEY_RESERVED) {
1009 set_bit(hotkey_keycode_map[i],
1010 tpacpi_inputdev->keybit);
1011 } else {
1012 if (i < sizeof(hotkey_reserved_mask)*8)
1013 hotkey_reserved_mask |= 1 << i;
1014 }
1015 }
1016
1017 if (tp_features.hotkey_wlsw) {
1018 set_bit(EV_SW, tpacpi_inputdev->evbit);
1019 set_bit(SW_RADIO, tpacpi_inputdev->swbit);
1020 }
1021
1022 #ifdef CONFIG_THINKPAD_ACPI_INPUT_ENABLED
1023 dbg_printk(TPACPI_DBG_INIT,
1024 "enabling hot key handling\n");
1025 res = hotkey_set(1, (hotkey_all_mask & ~hotkey_reserved_mask)
1026 | hotkey_orig_mask);
1027 if (res)
1028 return res;
1029 #endif /* CONFIG_THINKPAD_ACPI_INPUT_ENABLED */
1030 }
1031
1032 return (tp_features.hotkey)? 0 : 1;
1033 }
1034
1035 static void hotkey_exit(void)
1036 {
1037 int res;
1038
1039 if (tp_features.hotkey) {
1040 dbg_printk(TPACPI_DBG_EXIT, "restoring original hotkey mask\n");
1041 res = hotkey_set(hotkey_orig_status, hotkey_orig_mask);
1042 if (res)
1043 printk(IBM_ERR "failed to restore hotkey to BIOS defaults\n");
1044 }
1045
1046 if (hotkey_dev_attributes) {
1047 delete_attr_set(hotkey_dev_attributes, &tpacpi_pdev->dev.kobj);
1048 hotkey_dev_attributes = NULL;
1049 }
1050 }
1051
1052 static void tpacpi_input_send_key(unsigned int scancode,
1053 unsigned int keycode)
1054 {
1055 if (keycode != KEY_RESERVED) {
1056 input_report_key(tpacpi_inputdev, keycode, 1);
1057 if (keycode == KEY_UNKNOWN)
1058 input_event(tpacpi_inputdev, EV_MSC, MSC_SCAN,
1059 scancode);
1060 input_sync(tpacpi_inputdev);
1061
1062 input_report_key(tpacpi_inputdev, keycode, 0);
1063 if (keycode == KEY_UNKNOWN)
1064 input_event(tpacpi_inputdev, EV_MSC, MSC_SCAN,
1065 scancode);
1066 input_sync(tpacpi_inputdev);
1067 }
1068 }
1069
1070 static void tpacpi_input_send_radiosw(void)
1071 {
1072 int wlsw;
1073
1074 if (tp_features.hotkey_wlsw && !hotkey_get_wlsw(&wlsw))
1075 input_report_switch(tpacpi_inputdev,
1076 SW_RADIO, !!wlsw);
1077 }
1078
1079 static void hotkey_notify(struct ibm_struct *ibm, u32 event)
1080 {
1081 u32 hkey;
1082 unsigned int keycode, scancode;
1083 int sendacpi = 1;
1084
1085 if (event == 0x80 && acpi_evalf(hkey_handle, &hkey, "MHKP", "d")) {
1086 if (tpacpi_inputdev->users > 0) {
1087 switch (hkey >> 12) {
1088 case 1:
1089 /* 0x1000-0x1FFF: key presses */
1090 scancode = hkey & 0xfff;
1091 if (scancode > 0 && scancode < 0x21) {
1092 scancode--;
1093 keycode = hotkey_keycode_map[scancode];
1094 tpacpi_input_send_key(scancode, keycode);
1095 sendacpi = (keycode == KEY_RESERVED
1096 || keycode == KEY_UNKNOWN);
1097 } else {
1098 printk(IBM_ERR
1099 "hotkey 0x%04x out of range for keyboard map\n",
1100 hkey);
1101 }
1102 break;
1103 case 5:
1104 /* 0x5000-0x5FFF: LID */
1105 /* we don't handle it through this path, just
1106 * eat up known LID events */
1107 if (hkey != 0x5001 && hkey != 0x5002) {
1108 printk(IBM_ERR
1109 "unknown LID-related hotkey event: 0x%04x\n",
1110 hkey);
1111 }
1112 break;
1113 case 7:
1114 /* 0x7000-0x7FFF: misc */
1115 if (tp_features.hotkey_wlsw && hkey == 0x7000) {
1116 tpacpi_input_send_radiosw();
1117 sendacpi = 0;
1118 break;
1119 }
1120 /* fallthrough to default */
1121 default:
1122 /* case 2: dock-related */
1123 /* 0x2305 - T43 waking up due to bay lever eject while aslept */
1124 /* case 3: ultra-bay related. maybe bay in dock? */
1125 /* 0x3003 - T43 after wake up by bay lever eject (0x2305) */
1126 printk(IBM_NOTICE "unhandled hotkey event 0x%04x\n", hkey);
1127 }
1128 }
1129
1130 if (sendacpi)
1131 acpi_bus_generate_event(ibm->acpi->device, event, hkey);
1132 } else {
1133 printk(IBM_ERR "unknown hotkey notification event %d\n", event);
1134 acpi_bus_generate_event(ibm->acpi->device, event, 0);
1135 }
1136 }
1137
1138 static void hotkey_resume(void)
1139 {
1140 tpacpi_input_send_radiosw();
1141 }
1142
1143 /*
1144 * Call with hotkey_mutex held
1145 */
1146 static int hotkey_get(int *status, u32 *mask)
1147 {
1148 if (!acpi_evalf(hkey_handle, status, "DHKC", "d"))
1149 return -EIO;
1150
1151 if (tp_features.hotkey_mask)
1152 if (!acpi_evalf(hkey_handle, mask, "DHKN", "d"))
1153 return -EIO;
1154
1155 return 0;
1156 }
1157
1158 /*
1159 * Call with hotkey_mutex held
1160 */
1161 static int hotkey_set(int status, u32 mask)
1162 {
1163 int i;
1164
1165 if (!acpi_evalf(hkey_handle, NULL, "MHKC", "vd", status))
1166 return -EIO;
1167
1168 if (tp_features.hotkey_mask)
1169 for (i = 0; i < 32; i++) {
1170 int bit = ((1 << i) & mask) != 0;
1171 if (!acpi_evalf(hkey_handle,
1172 NULL, "MHKM", "vdd", i + 1, bit))
1173 return -EIO;
1174 }
1175
1176 return 0;
1177 }
1178
1179 /* procfs -------------------------------------------------------------- */
1180 static int hotkey_read(char *p)
1181 {
1182 int res, status;
1183 u32 mask;
1184 int len = 0;
1185
1186 if (!tp_features.hotkey) {
1187 len += sprintf(p + len, "status:\t\tnot supported\n");
1188 return len;
1189 }
1190
1191 res = mutex_lock_interruptible(&hotkey_mutex);
1192 if (res < 0)
1193 return res;
1194 res = hotkey_get(&status, &mask);
1195 mutex_unlock(&hotkey_mutex);
1196 if (res)
1197 return res;
1198
1199 len += sprintf(p + len, "status:\t\t%s\n", enabled(status, 0));
1200 if (tp_features.hotkey_mask) {
1201 len += sprintf(p + len, "mask:\t\t0x%08x\n", mask);
1202 len += sprintf(p + len,
1203 "commands:\tenable, disable, reset, <mask>\n");
1204 } else {
1205 len += sprintf(p + len, "mask:\t\tnot supported\n");
1206 len += sprintf(p + len, "commands:\tenable, disable, reset\n");
1207 }
1208
1209 return len;
1210 }
1211
1212 static int hotkey_write(char *buf)
1213 {
1214 int res, status;
1215 u32 mask;
1216 char *cmd;
1217 int do_cmd = 0;
1218
1219 if (!tp_features.hotkey)
1220 return -ENODEV;
1221
1222 res = mutex_lock_interruptible(&hotkey_mutex);
1223 if (res < 0)
1224 return res;
1225
1226 res = hotkey_get(&status, &mask);
1227 if (res)
1228 goto errexit;
1229
1230 res = 0;
1231 while ((cmd = next_cmd(&buf))) {
1232 if (strlencmp(cmd, "enable") == 0) {
1233 status = 1;
1234 } else if (strlencmp(cmd, "disable") == 0) {
1235 status = 0;
1236 } else if (strlencmp(cmd, "reset") == 0) {
1237 status = hotkey_orig_status;
1238 mask = hotkey_orig_mask;
1239 } else if (sscanf(cmd, "0x%x", &mask) == 1) {
1240 /* mask set */
1241 } else if (sscanf(cmd, "%x", &mask) == 1) {
1242 /* mask set */
1243 } else {
1244 res = -EINVAL;
1245 goto errexit;
1246 }
1247 do_cmd = 1;
1248 }
1249
1250 if (do_cmd)
1251 res = hotkey_set(status, mask);
1252
1253 errexit:
1254 mutex_unlock(&hotkey_mutex);
1255 return res;
1256 }
1257
1258 static struct tp_acpi_drv_struct ibm_hotkey_acpidriver = {
1259 .hid = IBM_HKEY_HID,
1260 .notify = hotkey_notify,
1261 .handle = &hkey_handle,
1262 .type = ACPI_DEVICE_NOTIFY,
1263 };
1264
1265 static struct ibm_struct hotkey_driver_data = {
1266 .name = "hotkey",
1267 .read = hotkey_read,
1268 .write = hotkey_write,
1269 .exit = hotkey_exit,
1270 .resume = hotkey_resume,
1271 .acpi = &ibm_hotkey_acpidriver,
1272 };
1273
1274 /*************************************************************************
1275 * Bluetooth subdriver
1276 */
1277
1278 /* sysfs bluetooth enable ---------------------------------------------- */
1279 static ssize_t bluetooth_enable_show(struct device *dev,
1280 struct device_attribute *attr,
1281 char *buf)
1282 {
1283 int status;
1284
1285 status = bluetooth_get_radiosw();
1286 if (status < 0)
1287 return status;
1288
1289 return snprintf(buf, PAGE_SIZE, "%d\n", status ? 1 : 0);
1290 }
1291
1292 static ssize_t bluetooth_enable_store(struct device *dev,
1293 struct device_attribute *attr,
1294 const char *buf, size_t count)
1295 {
1296 unsigned long t;
1297 int res;
1298
1299 if (parse_strtoul(buf, 1, &t))
1300 return -EINVAL;
1301
1302 res = bluetooth_set_radiosw(t);
1303
1304 return (res) ? res : count;
1305 }
1306
1307 static struct device_attribute dev_attr_bluetooth_enable =
1308 __ATTR(bluetooth_enable, S_IWUSR | S_IRUGO,
1309 bluetooth_enable_show, bluetooth_enable_store);
1310
1311 /* --------------------------------------------------------------------- */
1312
1313 static struct attribute *bluetooth_attributes[] = {
1314 &dev_attr_bluetooth_enable.attr,
1315 NULL
1316 };
1317
1318 static const struct attribute_group bluetooth_attr_group = {
1319 .attrs = bluetooth_attributes,
1320 };
1321
1322 static int __init bluetooth_init(struct ibm_init_struct *iibm)
1323 {
1324 int res;
1325 int status = 0;
1326
1327 vdbg_printk(TPACPI_DBG_INIT, "initializing bluetooth subdriver\n");
1328
1329 IBM_ACPIHANDLE_INIT(hkey);
1330
1331 /* bluetooth not supported on 570, 600e/x, 770e, 770x, A21e, A2xm/p,
1332 G4x, R30, R31, R40e, R50e, T20-22, X20-21 */
1333 tp_features.bluetooth = hkey_handle &&
1334 acpi_evalf(hkey_handle, &status, "GBDC", "qd");
1335
1336 vdbg_printk(TPACPI_DBG_INIT, "bluetooth is %s, status 0x%02x\n",
1337 str_supported(tp_features.bluetooth),
1338 status);
1339
1340 if (tp_features.bluetooth) {
1341 if (!(status & TP_ACPI_BLUETOOTH_HWPRESENT)) {
1342 /* no bluetooth hardware present in system */
1343 tp_features.bluetooth = 0;
1344 dbg_printk(TPACPI_DBG_INIT,
1345 "bluetooth hardware not installed\n");
1346 } else {
1347 res = sysfs_create_group(&tpacpi_pdev->dev.kobj,
1348 &bluetooth_attr_group);
1349 if (res)
1350 return res;
1351 }
1352 }
1353
1354 return (tp_features.bluetooth)? 0 : 1;
1355 }
1356
1357 static void bluetooth_exit(void)
1358 {
1359 sysfs_remove_group(&tpacpi_pdev->dev.kobj,
1360 &bluetooth_attr_group);
1361 }
1362
1363 static int bluetooth_get_radiosw(void)
1364 {
1365 int status;
1366
1367 if (!tp_features.bluetooth)
1368 return -ENODEV;
1369
1370 if (!acpi_evalf(hkey_handle, &status, "GBDC", "d"))
1371 return -EIO;
1372
1373 return ((status & TP_ACPI_BLUETOOTH_RADIOSSW) != 0);
1374 }
1375
1376 static int bluetooth_set_radiosw(int radio_on)
1377 {
1378 int status;
1379
1380 if (!tp_features.bluetooth)
1381 return -ENODEV;
1382
1383 if (!acpi_evalf(hkey_handle, &status, "GBDC", "d"))
1384 return -EIO;
1385 if (radio_on)
1386 status |= TP_ACPI_BLUETOOTH_RADIOSSW;
1387 else
1388 status &= ~TP_ACPI_BLUETOOTH_RADIOSSW;
1389 if (!acpi_evalf(hkey_handle, NULL, "SBDC", "vd", status))
1390 return -EIO;
1391
1392 return 0;
1393 }
1394
1395 /* procfs -------------------------------------------------------------- */
1396 static int bluetooth_read(char *p)
1397 {
1398 int len = 0;
1399 int status = bluetooth_get_radiosw();
1400
1401 if (!tp_features.bluetooth)
1402 len += sprintf(p + len, "status:\t\tnot supported\n");
1403 else {
1404 len += sprintf(p + len, "status:\t\t%s\n",
1405 (status)? "enabled" : "disabled");
1406 len += sprintf(p + len, "commands:\tenable, disable\n");
1407 }
1408
1409 return len;
1410 }
1411
1412 static int bluetooth_write(char *buf)
1413 {
1414 char *cmd;
1415
1416 if (!tp_features.bluetooth)
1417 return -ENODEV;
1418
1419 while ((cmd = next_cmd(&buf))) {
1420 if (strlencmp(cmd, "enable") == 0) {
1421 bluetooth_set_radiosw(1);
1422 } else if (strlencmp(cmd, "disable") == 0) {
1423 bluetooth_set_radiosw(0);
1424 } else
1425 return -EINVAL;
1426 }
1427
1428 return 0;
1429 }
1430
1431 static struct ibm_struct bluetooth_driver_data = {
1432 .name = "bluetooth",
1433 .read = bluetooth_read,
1434 .write = bluetooth_write,
1435 .exit = bluetooth_exit,
1436 };
1437
1438 /*************************************************************************
1439 * Wan subdriver
1440 */
1441
1442 /* sysfs wan enable ---------------------------------------------------- */
1443 static ssize_t wan_enable_show(struct device *dev,
1444 struct device_attribute *attr,
1445 char *buf)
1446 {
1447 int status;
1448
1449 status = wan_get_radiosw();
1450 if (status < 0)
1451 return status;
1452
1453 return snprintf(buf, PAGE_SIZE, "%d\n", status ? 1 : 0);
1454 }
1455
1456 static ssize_t wan_enable_store(struct device *dev,
1457 struct device_attribute *attr,
1458 const char *buf, size_t count)
1459 {
1460 unsigned long t;
1461 int res;
1462
1463 if (parse_strtoul(buf, 1, &t))
1464 return -EINVAL;
1465
1466 res = wan_set_radiosw(t);
1467
1468 return (res) ? res : count;
1469 }
1470
1471 static struct device_attribute dev_attr_wan_enable =
1472 __ATTR(wwan_enable, S_IWUSR | S_IRUGO,
1473 wan_enable_show, wan_enable_store);
1474
1475 /* --------------------------------------------------------------------- */
1476
1477 static struct attribute *wan_attributes[] = {
1478 &dev_attr_wan_enable.attr,
1479 NULL
1480 };
1481
1482 static const struct attribute_group wan_attr_group = {
1483 .attrs = wan_attributes,
1484 };
1485
1486 static int __init wan_init(struct ibm_init_struct *iibm)
1487 {
1488 int res;
1489 int status = 0;
1490
1491 vdbg_printk(TPACPI_DBG_INIT, "initializing wan subdriver\n");
1492
1493 IBM_ACPIHANDLE_INIT(hkey);
1494
1495 tp_features.wan = hkey_handle &&
1496 acpi_evalf(hkey_handle, &status, "GWAN", "qd");
1497
1498 vdbg_printk(TPACPI_DBG_INIT, "wan is %s, status 0x%02x\n",
1499 str_supported(tp_features.wan),
1500 status);
1501
1502 if (tp_features.wan) {
1503 if (!(status & TP_ACPI_WANCARD_HWPRESENT)) {
1504 /* no wan hardware present in system */
1505 tp_features.wan = 0;
1506 dbg_printk(TPACPI_DBG_INIT,
1507 "wan hardware not installed\n");
1508 } else {
1509 res = sysfs_create_group(&tpacpi_pdev->dev.kobj,
1510 &wan_attr_group);
1511 if (res)
1512 return res;
1513 }
1514 }
1515
1516 return (tp_features.wan)? 0 : 1;
1517 }
1518
1519 static void wan_exit(void)
1520 {
1521 sysfs_remove_group(&tpacpi_pdev->dev.kobj,
1522 &wan_attr_group);
1523 }
1524
1525 static int wan_get_radiosw(void)
1526 {
1527 int status;
1528
1529 if (!tp_features.wan)
1530 return -ENODEV;
1531
1532 if (!acpi_evalf(hkey_handle, &status, "GWAN", "d"))
1533 return -EIO;
1534
1535 return ((status & TP_ACPI_WANCARD_RADIOSSW) != 0);
1536 }
1537
1538 static int wan_set_radiosw(int radio_on)
1539 {
1540 int status;
1541
1542 if (!tp_features.wan)
1543 return -ENODEV;
1544
1545 if (!acpi_evalf(hkey_handle, &status, "GWAN", "d"))
1546 return -EIO;
1547 if (radio_on)
1548 status |= TP_ACPI_WANCARD_RADIOSSW;
1549 else
1550 status &= ~TP_ACPI_WANCARD_RADIOSSW;
1551 if (!acpi_evalf(hkey_handle, NULL, "SWAN", "vd", status))
1552 return -EIO;
1553
1554 return 0;
1555 }
1556
1557 /* procfs -------------------------------------------------------------- */
1558 static int wan_read(char *p)
1559 {
1560 int len = 0;
1561 int status = wan_get_radiosw();
1562
1563 if (!tp_features.wan)
1564 len += sprintf(p + len, "status:\t\tnot supported\n");
1565 else {
1566 len += sprintf(p + len, "status:\t\t%s\n",
1567 (status)? "enabled" : "disabled");
1568 len += sprintf(p + len, "commands:\tenable, disable\n");
1569 }
1570
1571 return len;
1572 }
1573
1574 static int wan_write(char *buf)
1575 {
1576 char *cmd;
1577
1578 if (!tp_features.wan)
1579 return -ENODEV;
1580
1581 while ((cmd = next_cmd(&buf))) {
1582 if (strlencmp(cmd, "enable") == 0) {
1583 wan_set_radiosw(1);
1584 } else if (strlencmp(cmd, "disable") == 0) {
1585 wan_set_radiosw(0);
1586 } else
1587 return -EINVAL;
1588 }
1589
1590 return 0;
1591 }
1592
1593 static struct ibm_struct wan_driver_data = {
1594 .name = "wan",
1595 .read = wan_read,
1596 .write = wan_write,
1597 .exit = wan_exit,
1598 .flags.experimental = 1,
1599 };
1600
1601 /*************************************************************************
1602 * Video subdriver
1603 */
1604
1605 static enum video_access_mode video_supported;
1606 static int video_orig_autosw;
1607
1608 IBM_HANDLE(vid, root, "\\_SB.PCI.AGP.VGA", /* 570 */
1609 "\\_SB.PCI0.AGP0.VID0", /* 600e/x, 770x */
1610 "\\_SB.PCI0.VID0", /* 770e */
1611 "\\_SB.PCI0.VID", /* A21e, G4x, R50e, X30, X40 */
1612 "\\_SB.PCI0.AGP.VID", /* all others */
1613 ); /* R30, R31 */
1614
1615 IBM_HANDLE(vid2, root, "\\_SB.PCI0.AGPB.VID"); /* G41 */
1616
1617 static int __init video_init(struct ibm_init_struct *iibm)
1618 {
1619 int ivga;
1620
1621 vdbg_printk(TPACPI_DBG_INIT, "initializing video subdriver\n");
1622
1623 IBM_ACPIHANDLE_INIT(vid);
1624 IBM_ACPIHANDLE_INIT(vid2);
1625
1626 if (vid2_handle && acpi_evalf(NULL, &ivga, "\\IVGA", "d") && ivga)
1627 /* G41, assume IVGA doesn't change */
1628 vid_handle = vid2_handle;
1629
1630 if (!vid_handle)
1631 /* video switching not supported on R30, R31 */
1632 video_supported = TPACPI_VIDEO_NONE;
1633 else if (acpi_evalf(vid_handle, &video_orig_autosw, "SWIT", "qd"))
1634 /* 570 */
1635 video_supported = TPACPI_VIDEO_570;
1636 else if (acpi_evalf(vid_handle, &video_orig_autosw, "^VADL", "qd"))
1637 /* 600e/x, 770e, 770x */
1638 video_supported = TPACPI_VIDEO_770;
1639 else
1640 /* all others */
1641 video_supported = TPACPI_VIDEO_NEW;
1642
1643 vdbg_printk(TPACPI_DBG_INIT, "video is %s, mode %d\n",
1644 str_supported(video_supported != TPACPI_VIDEO_NONE),
1645 video_supported);
1646
1647 return (video_supported != TPACPI_VIDEO_NONE)? 0 : 1;
1648 }
1649
1650 static void video_exit(void)
1651 {
1652 dbg_printk(TPACPI_DBG_EXIT,
1653 "restoring original video autoswitch mode\n");
1654 if (video_autosw_set(video_orig_autosw))
1655 printk(IBM_ERR "error while trying to restore original "
1656 "video autoswitch mode\n");
1657 }
1658
1659 static int video_outputsw_get(void)
1660 {
1661 int status = 0;
1662 int i;
1663
1664 switch (video_supported) {
1665 case TPACPI_VIDEO_570:
1666 if (!acpi_evalf(NULL, &i, "\\_SB.PHS", "dd",
1667 TP_ACPI_VIDEO_570_PHSCMD))
1668 return -EIO;
1669 status = i & TP_ACPI_VIDEO_570_PHSMASK;
1670 break;
1671 case TPACPI_VIDEO_770:
1672 if (!acpi_evalf(NULL, &i, "\\VCDL", "d"))
1673 return -EIO;
1674 if (i)
1675 status |= TP_ACPI_VIDEO_S_LCD;
1676 if (!acpi_evalf(NULL, &i, "\\VCDC", "d"))
1677 return -EIO;
1678 if (i)
1679 status |= TP_ACPI_VIDEO_S_CRT;
1680 break;
1681 case TPACPI_VIDEO_NEW:
1682 if (!acpi_evalf(NULL, NULL, "\\VUPS", "vd", 1) ||
1683 !acpi_evalf(NULL, &i, "\\VCDC", "d"))
1684 return -EIO;
1685 if (i)
1686 status |= TP_ACPI_VIDEO_S_CRT;
1687
1688 if (!acpi_evalf(NULL, NULL, "\\VUPS", "vd", 0) ||
1689 !acpi_evalf(NULL, &i, "\\VCDL", "d"))
1690 return -EIO;
1691 if (i)
1692 status |= TP_ACPI_VIDEO_S_LCD;
1693 if (!acpi_evalf(NULL, &i, "\\VCDD", "d"))
1694 return -EIO;
1695 if (i)
1696 status |= TP_ACPI_VIDEO_S_DVI;
1697 break;
1698 default:
1699 return -ENOSYS;
1700 }
1701
1702 return status;
1703 }
1704
1705 static int video_outputsw_set(int status)
1706 {
1707 int autosw;
1708 int res = 0;
1709
1710 switch (video_supported) {
1711 case TPACPI_VIDEO_570:
1712 res = acpi_evalf(NULL, NULL,
1713 "\\_SB.PHS2", "vdd",
1714 TP_ACPI_VIDEO_570_PHS2CMD,
1715 status | TP_ACPI_VIDEO_570_PHS2SET);
1716 break;
1717 case TPACPI_VIDEO_770:
1718 autosw = video_autosw_get();
1719 if (autosw < 0)
1720 return autosw;
1721
1722 res = video_autosw_set(1);
1723 if (res)
1724 return res;
1725 res = acpi_evalf(vid_handle, NULL,
1726 "ASWT", "vdd", status * 0x100, 0);
1727 if (!autosw && video_autosw_set(autosw)) {
1728 printk(IBM_ERR "video auto-switch left enabled due to error\n");
1729 return -EIO;
1730 }
1731 break;
1732 case TPACPI_VIDEO_NEW:
1733 res = acpi_evalf(NULL, NULL, "\\VUPS", "vd", 0x80) &&
1734 acpi_evalf(NULL, NULL, "\\VSDS", "vdd", status, 1);
1735 break;
1736 default:
1737 return -ENOSYS;
1738 }
1739
1740 return (res)? 0 : -EIO;
1741 }
1742
1743 static int video_autosw_get(void)
1744 {
1745 int autosw = 0;
1746
1747 switch (video_supported) {
1748 case TPACPI_VIDEO_570:
1749 if (!acpi_evalf(vid_handle, &autosw, "SWIT", "d"))
1750 return -EIO;
1751 break;
1752 case TPACPI_VIDEO_770:
1753 case TPACPI_VIDEO_NEW:
1754 if (!acpi_evalf(vid_handle, &autosw, "^VDEE", "d"))
1755 return -EIO;
1756 break;
1757 default:
1758 return -ENOSYS;
1759 }
1760
1761 return autosw & 1;
1762 }
1763
1764 static int video_autosw_set(int enable)
1765 {
1766 if (!acpi_evalf(vid_handle, NULL, "_DOS", "vd", (enable)? 1 : 0))
1767 return -EIO;
1768 return 0;
1769 }
1770
1771 static int video_outputsw_cycle(void)
1772 {
1773 int autosw = video_autosw_get();
1774 int res;
1775
1776 if (autosw < 0)
1777 return autosw;
1778
1779 switch (video_supported) {
1780 case TPACPI_VIDEO_570:
1781 res = video_autosw_set(1);
1782 if (res)
1783 return res;
1784 res = acpi_evalf(ec_handle, NULL, "_Q16", "v");
1785 break;
1786 case TPACPI_VIDEO_770:
1787 case TPACPI_VIDEO_NEW:
1788 res = video_autosw_set(1);
1789 if (res)
1790 return res;
1791 res = acpi_evalf(vid_handle, NULL, "VSWT", "v");
1792 break;
1793 default:
1794 return -ENOSYS;
1795 }
1796 if (!autosw && video_autosw_set(autosw)) {
1797 printk(IBM_ERR "video auto-switch left enabled due to error\n");
1798 return -EIO;
1799 }
1800
1801 return (res)? 0 : -EIO;
1802 }
1803
1804 static int video_expand_toggle(void)
1805 {
1806 switch (video_supported) {
1807 case TPACPI_VIDEO_570:
1808 return acpi_evalf(ec_handle, NULL, "_Q17", "v")?
1809 0 : -EIO;
1810 case TPACPI_VIDEO_770:
1811 return acpi_evalf(vid_handle, NULL, "VEXP", "v")?
1812 0 : -EIO;
1813 case TPACPI_VIDEO_NEW:
1814 return acpi_evalf(NULL, NULL, "\\VEXP", "v")?
1815 0 : -EIO;
1816 default:
1817 return -ENOSYS;
1818 }
1819 /* not reached */
1820 }
1821
1822 static int video_read(char *p)
1823 {
1824 int status, autosw;
1825 int len = 0;
1826
1827 if (video_supported == TPACPI_VIDEO_NONE) {
1828 len += sprintf(p + len, "status:\t\tnot supported\n");
1829 return len;
1830 }
1831
1832 status = video_outputsw_get();
1833 if (status < 0)
1834 return status;
1835
1836 autosw = video_autosw_get();
1837 if (autosw < 0)
1838 return autosw;
1839
1840 len += sprintf(p + len, "status:\t\tsupported\n");
1841 len += sprintf(p + len, "lcd:\t\t%s\n", enabled(status, 0));
1842 len += sprintf(p + len, "crt:\t\t%s\n", enabled(status, 1));
1843 if (video_supported == TPACPI_VIDEO_NEW)
1844 len += sprintf(p + len, "dvi:\t\t%s\n", enabled(status, 3));
1845 len += sprintf(p + len, "auto:\t\t%s\n", enabled(autosw, 0));
1846 len += sprintf(p + len, "commands:\tlcd_enable, lcd_disable\n");
1847 len += sprintf(p + len, "commands:\tcrt_enable, crt_disable\n");
1848 if (video_supported == TPACPI_VIDEO_NEW)
1849 len += sprintf(p + len, "commands:\tdvi_enable, dvi_disable\n");
1850 len += sprintf(p + len, "commands:\tauto_enable, auto_disable\n");
1851 len += sprintf(p + len, "commands:\tvideo_switch, expand_toggle\n");
1852
1853 return len;
1854 }
1855
1856 static int video_write(char *buf)
1857 {
1858 char *cmd;
1859 int enable, disable, status;
1860 int res;
1861
1862 if (video_supported == TPACPI_VIDEO_NONE)
1863 return -ENODEV;
1864
1865 enable = 0;
1866 disable = 0;
1867
1868 while ((cmd = next_cmd(&buf))) {
1869 if (strlencmp(cmd, "lcd_enable") == 0) {
1870 enable |= TP_ACPI_VIDEO_S_LCD;
1871 } else if (strlencmp(cmd, "lcd_disable") == 0) {
1872 disable |= TP_ACPI_VIDEO_S_LCD;
1873 } else if (strlencmp(cmd, "crt_enable") == 0) {
1874 enable |= TP_ACPI_VIDEO_S_CRT;
1875 } else if (strlencmp(cmd, "crt_disable") == 0) {
1876 disable |= TP_ACPI_VIDEO_S_CRT;
1877 } else if (video_supported == TPACPI_VIDEO_NEW &&
1878 strlencmp(cmd, "dvi_enable") == 0) {
1879 enable |= TP_ACPI_VIDEO_S_DVI;
1880 } else if (video_supported == TPACPI_VIDEO_NEW &&
1881 strlencmp(cmd, "dvi_disable") == 0) {
1882 disable |= TP_ACPI_VIDEO_S_DVI;
1883 } else if (strlencmp(cmd, "auto_enable") == 0) {
1884 res = video_autosw_set(1);
1885 if (res)
1886 return res;
1887 } else if (strlencmp(cmd, "auto_disable") == 0) {
1888 res = video_autosw_set(0);
1889 if (res)
1890 return res;
1891 } else if (strlencmp(cmd, "video_switch") == 0) {
1892 res = video_outputsw_cycle();
1893 if (res)
1894 return res;
1895 } else if (strlencmp(cmd, "expand_toggle") == 0) {
1896 res = video_expand_toggle();
1897 if (res)
1898 return res;
1899 } else
1900 return -EINVAL;
1901 }
1902
1903 if (enable || disable) {
1904 status = video_outputsw_get();
1905 if (status < 0)
1906 return status;
1907 res = video_outputsw_set((status & ~disable) | enable);
1908 if (res)
1909 return res;
1910 }
1911
1912 return 0;
1913 }
1914
1915 static struct ibm_struct video_driver_data = {
1916 .name = "video",
1917 .read = video_read,
1918 .write = video_write,
1919 .exit = video_exit,
1920 };
1921
1922 /*************************************************************************
1923 * Light (thinklight) subdriver
1924 */
1925
1926 IBM_HANDLE(lght, root, "\\LGHT"); /* A21e, A2xm/p, T20-22, X20-21 */
1927 IBM_HANDLE(ledb, ec, "LEDB"); /* G4x */
1928
1929 static int __init light_init(struct ibm_init_struct *iibm)
1930 {
1931 vdbg_printk(TPACPI_DBG_INIT, "initializing light subdriver\n");
1932
1933 IBM_ACPIHANDLE_INIT(ledb);
1934 IBM_ACPIHANDLE_INIT(lght);
1935 IBM_ACPIHANDLE_INIT(cmos);
1936
1937 /* light not supported on 570, 600e/x, 770e, 770x, G4x, R30, R31 */
1938 tp_features.light = (cmos_handle || lght_handle) && !ledb_handle;
1939
1940 if (tp_features.light)
1941 /* light status not supported on
1942 570, 600e/x, 770e, 770x, G4x, R30, R31, R32, X20 */
1943 tp_features.light_status =
1944 acpi_evalf(ec_handle, NULL, "KBLT", "qv");
1945
1946 vdbg_printk(TPACPI_DBG_INIT, "light is %s\n",
1947 str_supported(tp_features.light));
1948
1949 return (tp_features.light)? 0 : 1;
1950 }
1951
1952 static int light_read(char *p)
1953 {
1954 int len = 0;
1955 int status = 0;
1956
1957 if (!tp_features.light) {
1958 len += sprintf(p + len, "status:\t\tnot supported\n");
1959 } else if (!tp_features.light_status) {
1960 len += sprintf(p + len, "status:\t\tunknown\n");
1961 len += sprintf(p + len, "commands:\ton, off\n");
1962 } else {
1963 if (!acpi_evalf(ec_handle, &status, "KBLT", "d"))
1964 return -EIO;
1965 len += sprintf(p + len, "status:\t\t%s\n", onoff(status, 0));
1966 len += sprintf(p + len, "commands:\ton, off\n");
1967 }
1968
1969 return len;
1970 }
1971
1972 static int light_write(char *buf)
1973 {
1974 int cmos_cmd, lght_cmd;
1975 char *cmd;
1976 int success;
1977
1978 if (!tp_features.light)
1979 return -ENODEV;
1980
1981 while ((cmd = next_cmd(&buf))) {
1982 if (strlencmp(cmd, "on") == 0) {
1983 cmos_cmd = 0x0c;
1984 lght_cmd = 1;
1985 } else if (strlencmp(cmd, "off") == 0) {
1986 cmos_cmd = 0x0d;
1987 lght_cmd = 0;
1988 } else
1989 return -EINVAL;
1990
1991 success = cmos_handle ?
1992 acpi_evalf(cmos_handle, NULL, NULL, "vd", cmos_cmd) :
1993 acpi_evalf(lght_handle, NULL, NULL, "vd", lght_cmd);
1994 if (!success)
1995 return -EIO;
1996 }
1997
1998 return 0;
1999 }
2000
2001 static struct ibm_struct light_driver_data = {
2002 .name = "light",
2003 .read = light_read,
2004 .write = light_write,
2005 };
2006
2007 /*************************************************************************
2008 * Dock subdriver
2009 */
2010
2011 #ifdef CONFIG_THINKPAD_ACPI_DOCK
2012
2013 IBM_HANDLE(dock, root, "\\_SB.GDCK", /* X30, X31, X40 */
2014 "\\_SB.PCI0.DOCK", /* 600e/x,770e,770x,A2xm/p,T20-22,X20-21 */
2015 "\\_SB.PCI0.PCI1.DOCK", /* all others */
2016 "\\_SB.PCI.ISA.SLCE", /* 570 */
2017 ); /* A21e,G4x,R30,R31,R32,R40,R40e,R50e */
2018
2019 /* don't list other alternatives as we install a notify handler on the 570 */
2020 IBM_HANDLE(pci, root, "\\_SB.PCI"); /* 570 */
2021
2022 static struct tp_acpi_drv_struct ibm_dock_acpidriver[2] = {
2023 {
2024 .notify = dock_notify,
2025 .handle = &dock_handle,
2026 .type = ACPI_SYSTEM_NOTIFY,
2027 },
2028 {
2029 /* THIS ONE MUST NEVER BE USED FOR DRIVER AUTOLOADING.
2030 * We just use it to get notifications of dock hotplug
2031 * in very old thinkpads */
2032 .hid = PCI_ROOT_HID_STRING,
2033 .notify = dock_notify,
2034 .handle = &pci_handle,
2035 .type = ACPI_SYSTEM_NOTIFY,
2036 },
2037 };
2038
2039 static struct ibm_struct dock_driver_data[2] = {
2040 {
2041 .name = "dock",
2042 .read = dock_read,
2043 .write = dock_write,
2044 .acpi = &ibm_dock_acpidriver[0],
2045 },
2046 {
2047 .name = "dock",
2048 .acpi = &ibm_dock_acpidriver[1],
2049 },
2050 };
2051
2052 #define dock_docked() (_sta(dock_handle) & 1)
2053
2054 static int __init dock_init(struct ibm_init_struct *iibm)
2055 {
2056 vdbg_printk(TPACPI_DBG_INIT, "initializing dock subdriver\n");
2057
2058 IBM_ACPIHANDLE_INIT(dock);
2059
2060 vdbg_printk(TPACPI_DBG_INIT, "dock is %s\n",
2061 str_supported(dock_handle != NULL));
2062
2063 return (dock_handle)? 0 : 1;
2064 }
2065
2066 static int __init dock_init2(struct ibm_init_struct *iibm)
2067 {
2068 int dock2_needed;
2069
2070 vdbg_printk(TPACPI_DBG_INIT, "initializing dock subdriver part 2\n");
2071
2072 if (dock_driver_data[0].flags.acpi_driver_registered &&
2073 dock_driver_data[0].flags.acpi_notify_installed) {
2074 IBM_ACPIHANDLE_INIT(pci);
2075 dock2_needed = (pci_handle != NULL);
2076 vdbg_printk(TPACPI_DBG_INIT,
2077 "dock PCI handler for the TP 570 is %s\n",
2078 str_supported(dock2_needed));
2079 } else {
2080 vdbg_printk(TPACPI_DBG_INIT,
2081 "dock subdriver part 2 not required\n");
2082 dock2_needed = 0;
2083 }
2084
2085 return (dock2_needed)? 0 : 1;
2086 }
2087
2088 static void dock_notify(struct ibm_struct *ibm, u32 event)
2089 {
2090 int docked = dock_docked();
2091 int pci = ibm->acpi->hid && strstr(ibm->acpi->hid, PCI_ROOT_HID_STRING);
2092
2093 if (event == 1 && !pci) /* 570 */
2094 acpi_bus_generate_event(ibm->acpi->device, event, 1); /* button */
2095 else if (event == 1 && pci) /* 570 */
2096 acpi_bus_generate_event(ibm->acpi->device, event, 3); /* dock */
2097 else if (event == 3 && docked)
2098 acpi_bus_generate_event(ibm->acpi->device, event, 1); /* button */
2099 else if (event == 3 && !docked)
2100 acpi_bus_generate_event(ibm->acpi->device, event, 2); /* undock */
2101 else if (event == 0 && docked)
2102 acpi_bus_generate_event(ibm->acpi->device, event, 3); /* dock */
2103 else {
2104 printk(IBM_ERR "unknown dock event %d, status %d\n",
2105 event, _sta(dock_handle));
2106 acpi_bus_generate_event(ibm->acpi->device, event, 0); /* unknown */
2107 }
2108 }
2109
2110 static int dock_read(char *p)
2111 {
2112 int len = 0;
2113 int docked = dock_docked();
2114
2115 if (!dock_handle)
2116 len += sprintf(p + len, "status:\t\tnot supported\n");
2117 else if (!docked)
2118 len += sprintf(p + len, "status:\t\tundocked\n");
2119 else {
2120 len += sprintf(p + len, "status:\t\tdocked\n");
2121 len += sprintf(p + len, "commands:\tdock, undock\n");
2122 }
2123
2124 return len;
2125 }
2126
2127 static int dock_write(char *buf)
2128 {
2129 char *cmd;
2130
2131 if (!dock_docked())
2132 return -ENODEV;
2133
2134 while ((cmd = next_cmd(&buf))) {
2135 if (strlencmp(cmd, "undock") == 0) {
2136 if (!acpi_evalf(dock_handle, NULL, "_DCK", "vd", 0) ||
2137 !acpi_evalf(dock_handle, NULL, "_EJ0", "vd", 1))
2138 return -EIO;
2139 } else if (strlencmp(cmd, "dock") == 0) {
2140 if (!acpi_evalf(dock_handle, NULL, "_DCK", "vd", 1))
2141 return -EIO;
2142 } else
2143 return -EINVAL;
2144 }
2145
2146 return 0;
2147 }
2148
2149 #endif /* CONFIG_THINKPAD_ACPI_DOCK */
2150
2151 /*************************************************************************
2152 * Bay subdriver
2153 */
2154
2155 #ifdef CONFIG_THINKPAD_ACPI_BAY
2156 IBM_HANDLE(bay, root, "\\_SB.PCI.IDE.SECN.MAST", /* 570 */
2157 "\\_SB.PCI0.IDE0.IDES.IDSM", /* 600e/x, 770e, 770x */
2158 "\\_SB.PCI0.SATA.SCND.MSTR", /* T60, X60, Z60 */
2159 "\\_SB.PCI0.IDE0.SCND.MSTR", /* all others */
2160 ); /* A21e, R30, R31 */
2161 IBM_HANDLE(bay_ej, bay, "_EJ3", /* 600e/x, A2xm/p, A3x */
2162 "_EJ0", /* all others */
2163 ); /* 570,A21e,G4x,R30,R31,R32,R40e,R50e */
2164 IBM_HANDLE(bay2, root, "\\_SB.PCI0.IDE0.PRIM.SLAV", /* A3x, R32 */
2165 "\\_SB.PCI0.IDE0.IDEP.IDPS", /* 600e/x, 770e, 770x */
2166 ); /* all others */
2167 IBM_HANDLE(bay2_ej, bay2, "_EJ3", /* 600e/x, 770e, A3x */
2168 "_EJ0", /* 770x */
2169 ); /* all others */
2170
2171 static int __init bay_init(struct ibm_init_struct *iibm)
2172 {
2173 vdbg_printk(TPACPI_DBG_INIT, "initializing bay subdriver\n");
2174
2175 IBM_ACPIHANDLE_INIT(bay);
2176 if (bay_handle)
2177 IBM_ACPIHANDLE_INIT(bay_ej);
2178 IBM_ACPIHANDLE_INIT(bay2);
2179 if (bay2_handle)
2180 IBM_ACPIHANDLE_INIT(bay2_ej);
2181
2182 tp_features.bay_status = bay_handle &&
2183 acpi_evalf(bay_handle, NULL, "_STA", "qv");
2184 tp_features.bay_status2 = bay2_handle &&
2185 acpi_evalf(bay2_handle, NULL, "_STA", "qv");
2186
2187 tp_features.bay_eject = bay_handle && bay_ej_handle &&
2188 (strlencmp(bay_ej_path, "_EJ0") == 0 || experimental);
2189 tp_features.bay_eject2 = bay2_handle && bay2_ej_handle &&
2190 (strlencmp(bay2_ej_path, "_EJ0") == 0 || experimental);
2191
2192 vdbg_printk(TPACPI_DBG_INIT,
2193 "bay 1: status %s, eject %s; bay 2: status %s, eject %s\n",
2194 str_supported(tp_features.bay_status),
2195 str_supported(tp_features.bay_eject),
2196 str_supported(tp_features.bay_status2),
2197 str_supported(tp_features.bay_eject2));
2198
2199 return (tp_features.bay_status || tp_features.bay_eject ||
2200 tp_features.bay_status2 || tp_features.bay_eject2)? 0 : 1;
2201 }
2202
2203 static void bay_notify(struct ibm_struct *ibm, u32 event)
2204 {
2205 acpi_bus_generate_event(ibm->acpi->device, event, 0);
2206 }
2207
2208 #define bay_occupied(b) (_sta(b##_handle) & 1)
2209
2210 static int bay_read(char *p)
2211 {
2212 int len = 0;
2213 int occupied = bay_occupied(bay);
2214 int occupied2 = bay_occupied(bay2);
2215 int eject, eject2;
2216
2217 len += sprintf(p + len, "status:\t\t%s\n",
2218 tp_features.bay_status ?
2219 (occupied ? "occupied" : "unoccupied") :
2220 "not supported");
2221 if (tp_features.bay_status2)
2222 len += sprintf(p + len, "status2:\t%s\n", occupied2 ?
2223 "occupied" : "unoccupied");
2224
2225 eject = tp_features.bay_eject && occupied;
2226 eject2 = tp_features.bay_eject2 && occupied2;
2227
2228 if (eject && eject2)
2229 len += sprintf(p + len, "commands:\teject, eject2\n");
2230 else if (eject)
2231 len += sprintf(p + len, "commands:\teject\n");
2232 else if (eject2)
2233 len += sprintf(p + len, "commands:\teject2\n");
2234
2235 return len;
2236 }
2237
2238 static int bay_write(char *buf)
2239 {
2240 char *cmd;
2241
2242 if (!tp_features.bay_eject && !tp_features.bay_eject2)
2243 return -ENODEV;
2244
2245 while ((cmd = next_cmd(&buf))) {
2246 if (tp_features.bay_eject && strlencmp(cmd, "eject") == 0) {
2247 if (!acpi_evalf(bay_ej_handle, NULL, NULL, "vd", 1))
2248 return -EIO;
2249 } else if (tp_features.bay_eject2 &&
2250 strlencmp(cmd, "eject2") == 0) {
2251 if (!acpi_evalf(bay2_ej_handle, NULL, NULL, "vd", 1))
2252 return -EIO;
2253 } else
2254 return -EINVAL;
2255 }
2256
2257 return 0;
2258 }
2259
2260 static struct tp_acpi_drv_struct ibm_bay_acpidriver = {
2261 .notify = bay_notify,
2262 .handle = &bay_handle,
2263 .type = ACPI_SYSTEM_NOTIFY,
2264 };
2265
2266 static struct ibm_struct bay_driver_data = {
2267 .name = "bay",
2268 .read = bay_read,
2269 .write = bay_write,
2270 .acpi = &ibm_bay_acpidriver,
2271 };
2272
2273 #endif /* CONFIG_THINKPAD_ACPI_BAY */
2274
2275 /*************************************************************************
2276 * CMOS subdriver
2277 */
2278
2279 /* sysfs cmos_command -------------------------------------------------- */
2280 static ssize_t cmos_command_store(struct device *dev,
2281 struct device_attribute *attr,
2282 const char *buf, size_t count)
2283 {
2284 unsigned long cmos_cmd;
2285 int res;
2286
2287 if (parse_strtoul(buf, 21, &cmos_cmd))
2288 return -EINVAL;
2289
2290 res = issue_thinkpad_cmos_command(cmos_cmd);
2291 return (res)? res : count;
2292 }
2293
2294 static struct device_attribute dev_attr_cmos_command =
2295 __ATTR(cmos_command, S_IWUSR, NULL, cmos_command_store);
2296
2297 /* --------------------------------------------------------------------- */
2298
2299 static int __init cmos_init(struct ibm_init_struct *iibm)
2300 {
2301 int res;
2302
2303 vdbg_printk(TPACPI_DBG_INIT,
2304 "initializing cmos commands subdriver\n");
2305
2306 IBM_ACPIHANDLE_INIT(cmos);
2307
2308 vdbg_printk(TPACPI_DBG_INIT, "cmos commands are %s\n",
2309 str_supported(cmos_handle != NULL));
2310
2311 res = device_create_file(&tpacpi_pdev->dev, &dev_attr_cmos_command);
2312 if (res)
2313 return res;
2314
2315 return (cmos_handle)? 0 : 1;
2316 }
2317
2318 static void cmos_exit(void)
2319 {
2320 device_remove_file(&tpacpi_pdev->dev, &dev_attr_cmos_command);
2321 }
2322
2323 static int cmos_read(char *p)
2324 {
2325 int len = 0;
2326
2327 /* cmos not supported on 570, 600e/x, 770e, 770x, A21e, A2xm/p,
2328 R30, R31, T20-22, X20-21 */
2329 if (!cmos_handle)
2330 len += sprintf(p + len, "status:\t\tnot supported\n");
2331 else {
2332 len += sprintf(p + len, "status:\t\tsupported\n");
2333 len += sprintf(p + len, "commands:\t<cmd> (<cmd> is 0-21)\n");
2334 }
2335
2336 return len;
2337 }
2338
2339 static int cmos_write(char *buf)
2340 {
2341 char *cmd;
2342 int cmos_cmd, res;
2343
2344 while ((cmd = next_cmd(&buf))) {
2345 if (sscanf(cmd, "%u", &cmos_cmd) == 1 &&
2346 cmos_cmd >= 0 && cmos_cmd <= 21) {
2347 /* cmos_cmd set */
2348 } else
2349 return -EINVAL;
2350
2351 res = issue_thinkpad_cmos_command(cmos_cmd);
2352 if (res)
2353 return res;
2354 }
2355
2356 return 0;
2357 }
2358
2359 static struct ibm_struct cmos_driver_data = {
2360 .name = "cmos",
2361 .read = cmos_read,
2362 .write = cmos_write,
2363 .exit = cmos_exit,
2364 };
2365
2366 /*************************************************************************
2367 * LED subdriver
2368 */
2369
2370 static enum led_access_mode led_supported;
2371
2372 IBM_HANDLE(led, ec, "SLED", /* 570 */
2373 "SYSL", /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20-21 */
2374 "LED", /* all others */
2375 ); /* R30, R31 */
2376
2377 static int __init led_init(struct ibm_init_struct *iibm)
2378 {
2379 vdbg_printk(TPACPI_DBG_INIT, "initializing LED subdriver\n");
2380
2381 IBM_ACPIHANDLE_INIT(led);
2382
2383 if (!led_handle)
2384 /* led not supported on R30, R31 */
2385 led_supported = TPACPI_LED_NONE;
2386 else if (strlencmp(led_path, "SLED") == 0)
2387 /* 570 */
2388 led_supported = TPACPI_LED_570;
2389 else if (strlencmp(led_path, "SYSL") == 0)
2390 /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20-21 */
2391 led_supported = TPACPI_LED_OLD;
2392 else
2393 /* all others */
2394 led_supported = TPACPI_LED_NEW;
2395
2396 vdbg_printk(TPACPI_DBG_INIT, "LED commands are %s, mode %d\n",
2397 str_supported(led_supported), led_supported);
2398
2399 return (led_supported != TPACPI_LED_NONE)? 0 : 1;
2400 }
2401
2402 #define led_status(s) ((s) == 0 ? "off" : ((s) == 1 ? "on" : "blinking"))
2403
2404 static int led_read(char *p)
2405 {
2406 int len = 0;
2407
2408 if (!led_supported) {
2409 len += sprintf(p + len, "status:\t\tnot supported\n");
2410 return len;
2411 }
2412 len += sprintf(p + len, "status:\t\tsupported\n");
2413
2414 if (led_supported == TPACPI_LED_570) {
2415 /* 570 */
2416 int i, status;
2417 for (i = 0; i < 8; i++) {
2418 if (!acpi_evalf(ec_handle,
2419 &status, "GLED", "dd", 1 << i))
2420 return -EIO;
2421 len += sprintf(p + len, "%d:\t\t%s\n",
2422 i, led_status(status));
2423 }
2424 }
2425
2426 len += sprintf(p + len, "commands:\t"
2427 "<led> on, <led> off, <led> blink (<led> is 0-7)\n");
2428
2429 return len;
2430 }
2431
2432 /* off, on, blink */
2433 static const int led_sled_arg1[] = { 0, 1, 3 };
2434 static const int led_exp_hlbl[] = { 0, 0, 1 }; /* led# * */
2435 static const int led_exp_hlcl[] = { 0, 1, 1 }; /* led# * */
2436 static const int led_led_arg1[] = { 0, 0x80, 0xc0 };
2437
2438 static int led_write(char *buf)
2439 {
2440 char *cmd;
2441 int led, ind, ret;
2442
2443 if (!led_supported)
2444 return -ENODEV;
2445
2446 while ((cmd = next_cmd(&buf))) {
2447 if (sscanf(cmd, "%d", &led) != 1 || led < 0 || led > 7)
2448 return -EINVAL;
2449
2450 if (strstr(cmd, "off")) {
2451 ind = 0;
2452 } else if (strstr(cmd, "on")) {
2453 ind = 1;
2454 } else if (strstr(cmd, "blink")) {
2455 ind = 2;
2456 } else
2457 return -EINVAL;
2458
2459 if (led_supported == TPACPI_LED_570) {
2460 /* 570 */
2461 led = 1 << led;
2462 if (!acpi_evalf(led_handle, NULL, NULL, "vdd",
2463 led, led_sled_arg1[ind]))
2464 return -EIO;
2465 } else if (led_supported == TPACPI_LED_OLD) {
2466 /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20 */
2467 led = 1 << led;
2468 ret = ec_write(TPACPI_LED_EC_HLMS, led);
2469 if (ret >= 0)
2470 ret =
2471 ec_write(TPACPI_LED_EC_HLBL,
2472 led * led_exp_hlbl[ind]);
2473 if (ret >= 0)
2474 ret =
2475 ec_write(TPACPI_LED_EC_HLCL,
2476 led * led_exp_hlcl[ind]);
2477 if (ret < 0)
2478 return ret;
2479 } else {
2480 /* all others */
2481 if (!acpi_evalf(led_handle, NULL, NULL, "vdd",
2482 led, led_led_arg1[ind]))
2483 return -EIO;
2484 }
2485 }
2486
2487 return 0;
2488 }
2489
2490 static struct ibm_struct led_driver_data = {
2491 .name = "led",
2492 .read = led_read,
2493 .write = led_write,
2494 };
2495
2496 /*************************************************************************
2497 * Beep subdriver
2498 */
2499
2500 IBM_HANDLE(beep, ec, "BEEP"); /* all except R30, R31 */
2501
2502 static int __init beep_init(struct ibm_init_struct *iibm)
2503 {
2504 vdbg_printk(TPACPI_DBG_INIT, "initializing beep subdriver\n");
2505
2506 IBM_ACPIHANDLE_INIT(beep);
2507
2508 vdbg_printk(TPACPI_DBG_INIT, "beep is %s\n",
2509 str_supported(beep_handle != NULL));
2510
2511 return (beep_handle)? 0 : 1;
2512 }
2513
2514 static int beep_read(char *p)
2515 {
2516 int len = 0;
2517
2518 if (!beep_handle)
2519 len += sprintf(p + len, "status:\t\tnot supported\n");
2520 else {
2521 len += sprintf(p + len, "status:\t\tsupported\n");
2522 len += sprintf(p + len, "commands:\t<cmd> (<cmd> is 0-17)\n");
2523 }
2524
2525 return len;
2526 }
2527
2528 static int beep_write(char *buf)
2529 {
2530 char *cmd;
2531 int beep_cmd;
2532
2533 if (!beep_handle)
2534 return -ENODEV;
2535
2536 while ((cmd = next_cmd(&buf))) {
2537 if (sscanf(cmd, "%u", &beep_cmd) == 1 &&
2538 beep_cmd >= 0 && beep_cmd <= 17) {
2539 /* beep_cmd set */
2540 } else
2541 return -EINVAL;
2542 if (!acpi_evalf(beep_handle, NULL, NULL, "vdd", beep_cmd, 0))
2543 return -EIO;
2544 }
2545
2546 return 0;
2547 }
2548
2549 static struct ibm_struct beep_driver_data = {
2550 .name = "beep",
2551 .read = beep_read,
2552 .write = beep_write,
2553 };
2554
2555 /*************************************************************************
2556 * Thermal subdriver
2557 */
2558
2559 static enum thermal_access_mode thermal_read_mode;
2560
2561 /* sysfs temp##_input -------------------------------------------------- */
2562
2563 static ssize_t thermal_temp_input_show(struct device *dev,
2564 struct device_attribute *attr,
2565 char *buf)
2566 {
2567 struct sensor_device_attribute *sensor_attr =
2568 to_sensor_dev_attr(attr);
2569 int idx = sensor_attr->index;
2570 s32 value;
2571 int res;
2572
2573 res = thermal_get_sensor(idx, &value);
2574 if (res)
2575 return res;
2576 if (value == TP_EC_THERMAL_TMP_NA * 1000)
2577 return -ENXIO;
2578
2579 return snprintf(buf, PAGE_SIZE, "%d\n", value);
2580 }
2581
2582 #define THERMAL_SENSOR_ATTR_TEMP(_idxA, _idxB) \
2583 SENSOR_ATTR(temp##_idxA##_input, S_IRUGO, thermal_temp_input_show, NULL, _idxB)
2584
2585 static struct sensor_device_attribute sensor_dev_attr_thermal_temp_input[] = {
2586 THERMAL_SENSOR_ATTR_TEMP(1, 0),
2587 THERMAL_SENSOR_ATTR_TEMP(2, 1),
2588 THERMAL_SENSOR_ATTR_TEMP(3, 2),
2589 THERMAL_SENSOR_ATTR_TEMP(4, 3),
2590 THERMAL_SENSOR_ATTR_TEMP(5, 4),
2591 THERMAL_SENSOR_ATTR_TEMP(6, 5),
2592 THERMAL_SENSOR_ATTR_TEMP(7, 6),
2593 THERMAL_SENSOR_ATTR_TEMP(8, 7),
2594 THERMAL_SENSOR_ATTR_TEMP(9, 8),
2595 THERMAL_SENSOR_ATTR_TEMP(10, 9),
2596 THERMAL_SENSOR_ATTR_TEMP(11, 10),
2597 THERMAL_SENSOR_ATTR_TEMP(12, 11),
2598 THERMAL_SENSOR_ATTR_TEMP(13, 12),
2599 THERMAL_SENSOR_ATTR_TEMP(14, 13),
2600 THERMAL_SENSOR_ATTR_TEMP(15, 14),
2601 THERMAL_SENSOR_ATTR_TEMP(16, 15),
2602 };
2603
2604 #define THERMAL_ATTRS(X) \
2605 &sensor_dev_attr_thermal_temp_input[X].dev_attr.attr
2606
2607 static struct attribute *thermal_temp_input_attr[] = {
2608 THERMAL_ATTRS(8),
2609 THERMAL_ATTRS(9),
2610 THERMAL_ATTRS(10),
2611 THERMAL_ATTRS(11),
2612 THERMAL_ATTRS(12),
2613 THERMAL_ATTRS(13),
2614 THERMAL_ATTRS(14),
2615 THERMAL_ATTRS(15),
2616 THERMAL_ATTRS(0),
2617 THERMAL_ATTRS(1),
2618 THERMAL_ATTRS(2),
2619 THERMAL_ATTRS(3),
2620 THERMAL_ATTRS(4),
2621 THERMAL_ATTRS(5),
2622 THERMAL_ATTRS(6),
2623 THERMAL_ATTRS(7),
2624 NULL
2625 };
2626
2627 static const struct attribute_group thermal_temp_input16_group = {
2628 .attrs = thermal_temp_input_attr
2629 };
2630
2631 static const struct attribute_group thermal_temp_input8_group = {
2632 .attrs = &thermal_temp_input_attr[8]
2633 };
2634
2635 #undef THERMAL_SENSOR_ATTR_TEMP
2636 #undef THERMAL_ATTRS
2637
2638 /* --------------------------------------------------------------------- */
2639
2640 static int __init thermal_init(struct ibm_init_struct *iibm)
2641 {
2642 u8 t, ta1, ta2;
2643 int i;
2644 int acpi_tmp7;
2645 int res;
2646
2647 vdbg_printk(TPACPI_DBG_INIT, "initializing thermal subdriver\n");
2648
2649 acpi_tmp7 = acpi_evalf(ec_handle, NULL, "TMP7", "qv");
2650
2651 if (ibm_thinkpad_ec_found && experimental) {
2652 /*
2653 * Direct EC access mode: sensors at registers
2654 * 0x78-0x7F, 0xC0-0xC7. Registers return 0x00 for
2655 * non-implemented, thermal sensors return 0x80 when
2656 * not available
2657 */
2658
2659 ta1 = ta2 = 0;
2660 for (i = 0; i < 8; i++) {
2661 if (acpi_ec_read(TP_EC_THERMAL_TMP0 + i, &t)) {
2662 ta1 |= t;
2663 } else {
2664 ta1 = 0;
2665 break;
2666 }
2667 if (acpi_ec_read(TP_EC_THERMAL_TMP8 + i, &t)) {
2668 ta2 |= t;
2669 } else {
2670 ta1 = 0;
2671 break;
2672 }
2673 }
2674 if (ta1 == 0) {
2675 /* This is sheer paranoia, but we handle it anyway */
2676 if (acpi_tmp7) {
2677 printk(IBM_ERR
2678 "ThinkPad ACPI EC access misbehaving, "
2679 "falling back to ACPI TMPx access mode\n");
2680 thermal_read_mode = TPACPI_THERMAL_ACPI_TMP07;
2681 } else {
2682 printk(IBM_ERR
2683 "ThinkPad ACPI EC access misbehaving, "
2684 "disabling thermal sensors access\n");
2685 thermal_read_mode = TPACPI_THERMAL_NONE;
2686 }
2687 } else {
2688 thermal_read_mode =
2689 (ta2 != 0) ?
2690 TPACPI_THERMAL_TPEC_16 : TPACPI_THERMAL_TPEC_8;
2691 }
2692 } else if (acpi_tmp7) {
2693 if (acpi_evalf(ec_handle, NULL, "UPDT", "qv")) {
2694 /* 600e/x, 770e, 770x */
2695 thermal_read_mode = TPACPI_THERMAL_ACPI_UPDT;
2696 } else {
2697 /* Standard ACPI TMPx access, max 8 sensors */
2698 thermal_read_mode = TPACPI_THERMAL_ACPI_TMP07;
2699 }
2700 } else {
2701 /* temperatures not supported on 570, G4x, R30, R31, R32 */
2702 thermal_read_mode = TPACPI_THERMAL_NONE;
2703 }
2704
2705 vdbg_printk(TPACPI_DBG_INIT, "thermal is %s, mode %d\n",
2706 str_supported(thermal_read_mode != TPACPI_THERMAL_NONE),
2707 thermal_read_mode);
2708
2709 switch(thermal_read_mode) {
2710 case TPACPI_THERMAL_TPEC_16:
2711 res = sysfs_create_group(&tpacpi_pdev->dev.kobj,
2712 &thermal_temp_input16_group);
2713 if (res)
2714 return res;
2715 break;
2716 case TPACPI_THERMAL_TPEC_8:
2717 case TPACPI_THERMAL_ACPI_TMP07:
2718 case TPACPI_THERMAL_ACPI_UPDT:
2719 res = sysfs_create_group(&tpacpi_pdev->dev.kobj,
2720 &thermal_temp_input8_group);
2721 if (res)
2722 return res;
2723 break;
2724 case TPACPI_THERMAL_NONE:
2725 default:
2726 return 1;
2727 }
2728
2729 return 0;
2730 }
2731
2732 static void thermal_exit(void)
2733 {
2734 switch(thermal_read_mode) {
2735 case TPACPI_THERMAL_TPEC_16:
2736 sysfs_remove_group(&tpacpi_pdev->dev.kobj,
2737 &thermal_temp_input16_group);
2738 break;
2739 case TPACPI_THERMAL_TPEC_8:
2740 case TPACPI_THERMAL_ACPI_TMP07:
2741 case TPACPI_THERMAL_ACPI_UPDT:
2742 sysfs_remove_group(&tpacpi_pdev->dev.kobj,
2743 &thermal_temp_input16_group);
2744 break;
2745 case TPACPI_THERMAL_NONE:
2746 default:
2747 break;
2748 }
2749 }
2750
2751 /* idx is zero-based */
2752 static int thermal_get_sensor(int idx, s32 *value)
2753 {
2754 int t;
2755 s8 tmp;
2756 char tmpi[5];
2757
2758 t = TP_EC_THERMAL_TMP0;
2759
2760 switch (thermal_read_mode) {
2761 #if TPACPI_MAX_THERMAL_SENSORS >= 16
2762 case TPACPI_THERMAL_TPEC_16:
2763 if (idx >= 8 && idx <= 15) {
2764 t = TP_EC_THERMAL_TMP8;
2765 idx -= 8;
2766 }
2767 /* fallthrough */
2768 #endif
2769 case TPACPI_THERMAL_TPEC_8:
2770 if (idx <= 7) {
2771 if (!acpi_ec_read(t + idx, &tmp))
2772 return -EIO;
2773 *value = tmp * 1000;
2774 return 0;
2775 }
2776 break;
2777
2778 case TPACPI_THERMAL_ACPI_UPDT:
2779 if (idx <= 7) {
2780 snprintf(tmpi, sizeof(tmpi), "TMP%c", '0' + idx);
2781 if (!acpi_evalf(ec_handle, NULL, "UPDT", "v"))
2782 return -EIO;
2783 if (!acpi_evalf(ec_handle, &t, tmpi, "d"))
2784 return -EIO;
2785 *value = (t - 2732) * 100;
2786 return 0;
2787 }
2788 break;
2789
2790 case TPACPI_THERMAL_ACPI_TMP07:
2791 if (idx <= 7) {
2792 snprintf(tmpi, sizeof(tmpi), "TMP%c", '0' + idx);
2793 if (!acpi_evalf(ec_handle, &t, tmpi, "d"))
2794 return -EIO;
2795 *value = t * 1000;
2796 return 0;
2797 }
2798 break;
2799
2800 case TPACPI_THERMAL_NONE:
2801 default:
2802 return -ENOSYS;
2803 }
2804
2805 return -EINVAL;
2806 }
2807
2808 static int thermal_get_sensors(struct ibm_thermal_sensors_struct *s)
2809 {
2810 int res, i;
2811 int n;
2812
2813 n = 8;
2814 i = 0;
2815
2816 if (!s)
2817 return -EINVAL;
2818
2819 if (thermal_read_mode == TPACPI_THERMAL_TPEC_16)
2820 n = 16;
2821
2822 for(i = 0 ; i < n; i++) {
2823 res = thermal_get_sensor(i, &s->temp[i]);
2824 if (res)
2825 return res;
2826 }
2827
2828 return n;
2829 }
2830
2831 static int thermal_read(char *p)
2832 {
2833 int len = 0;
2834 int n, i;
2835 struct ibm_thermal_sensors_struct t;
2836
2837 n = thermal_get_sensors(&t);
2838 if (unlikely(n < 0))
2839 return n;
2840
2841 len += sprintf(p + len, "temperatures:\t");
2842
2843 if (n > 0) {
2844 for (i = 0; i < (n - 1); i++)
2845 len += sprintf(p + len, "%d ", t.temp[i] / 1000);
2846 len += sprintf(p + len, "%d\n", t.temp[i] / 1000);
2847 } else
2848 len += sprintf(p + len, "not supported\n");
2849
2850 return len;
2851 }
2852
2853 static struct ibm_struct thermal_driver_data = {
2854 .name = "thermal",
2855 .read = thermal_read,
2856 .exit = thermal_exit,
2857 };
2858
2859 /*************************************************************************
2860 * EC Dump subdriver
2861 */
2862
2863 static u8 ecdump_regs[256];
2864
2865 static int ecdump_read(char *p)
2866 {
2867 int len = 0;
2868 int i, j;
2869 u8 v;
2870
2871 len += sprintf(p + len, "EC "
2872 " +00 +01 +02 +03 +04 +05 +06 +07"
2873 " +08 +09 +0a +0b +0c +0d +0e +0f\n");
2874 for (i = 0; i < 256; i += 16) {
2875 len += sprintf(p + len, "EC 0x%02x:", i);
2876 for (j = 0; j < 16; j++) {
2877 if (!acpi_ec_read(i + j, &v))
2878 break;
2879 if (v != ecdump_regs[i + j])
2880 len += sprintf(p + len, " *%02x", v);
2881 else
2882 len += sprintf(p + len, " %02x", v);
2883 ecdump_regs[i + j] = v;
2884 }
2885 len += sprintf(p + len, "\n");
2886 if (j != 16)
2887 break;
2888 }
2889
2890 /* These are way too dangerous to advertise openly... */
2891 #if 0
2892 len += sprintf(p + len, "commands:\t0x<offset> 0x<value>"
2893 " (<offset> is 00-ff, <value> is 00-ff)\n");
2894 len += sprintf(p + len, "commands:\t0x<offset> <value> "
2895 " (<offset> is 00-ff, <value> is 0-255)\n");
2896 #endif
2897 return len;
2898 }
2899
2900 static int ecdump_write(char *buf)
2901 {
2902 char *cmd;
2903 int i, v;
2904
2905 while ((cmd = next_cmd(&buf))) {
2906 if (sscanf(cmd, "0x%x 0x%x", &i, &v) == 2) {
2907 /* i and v set */
2908 } else if (sscanf(cmd, "0x%x %u", &i, &v) == 2) {
2909 /* i and v set */
2910 } else
2911 return -EINVAL;
2912 if (i >= 0 && i < 256 && v >= 0 && v < 256) {
2913 if (!acpi_ec_write(i, v))
2914 return -EIO;
2915 } else
2916 return -EINVAL;
2917 }
2918
2919 return 0;
2920 }
2921
2922 static struct ibm_struct ecdump_driver_data = {
2923 .name = "ecdump",
2924 .read = ecdump_read,
2925 .write = ecdump_write,
2926 .flags.experimental = 1,
2927 };
2928
2929 /*************************************************************************
2930 * Backlight/brightness subdriver
2931 */
2932
2933 static struct backlight_device *ibm_backlight_device;
2934
2935 static struct backlight_ops ibm_backlight_data = {
2936 .get_brightness = brightness_get,
2937 .update_status = brightness_update_status,
2938 };
2939
2940 static int __init brightness_init(struct ibm_init_struct *iibm)
2941 {
2942 int b;
2943
2944 vdbg_printk(TPACPI_DBG_INIT, "initializing brightness subdriver\n");
2945
2946 b = brightness_get(NULL);
2947 if (b < 0)
2948 return b;
2949
2950 ibm_backlight_device = backlight_device_register(
2951 TPACPI_BACKLIGHT_DEV_NAME, NULL, NULL,
2952 &ibm_backlight_data);
2953 if (IS_ERR(ibm_backlight_device)) {
2954 printk(IBM_ERR "Could not register backlight device\n");
2955 return PTR_ERR(ibm_backlight_device);
2956 }
2957 vdbg_printk(TPACPI_DBG_INIT, "brightness is supported\n");
2958
2959 ibm_backlight_device->props.max_brightness = 7;
2960 ibm_backlight_device->props.brightness = b;
2961 backlight_update_status(ibm_backlight_device);
2962
2963 return 0;
2964 }
2965
2966 static void brightness_exit(void)
2967 {
2968 if (ibm_backlight_device) {
2969 vdbg_printk(TPACPI_DBG_EXIT,
2970 "calling backlight_device_unregister()\n");
2971 backlight_device_unregister(ibm_backlight_device);
2972 ibm_backlight_device = NULL;
2973 }
2974 }
2975
2976 static int brightness_update_status(struct backlight_device *bd)
2977 {
2978 return brightness_set(
2979 (bd->props.fb_blank == FB_BLANK_UNBLANK &&
2980 bd->props.power == FB_BLANK_UNBLANK) ?
2981 bd->props.brightness : 0);
2982 }
2983
2984 static int brightness_get(struct backlight_device *bd)
2985 {
2986 u8 level;
2987 if (!acpi_ec_read(brightness_offset, &level))
2988 return -EIO;
2989
2990 level &= 0x7;
2991
2992 return level;
2993 }
2994
2995 static int brightness_set(int value)
2996 {
2997 int cmos_cmd, inc, i;
2998 int current_value = brightness_get(NULL);
2999
3000 value &= 7;
3001
3002 cmos_cmd = value > current_value ? TP_CMOS_BRIGHTNESS_UP : TP_CMOS_BRIGHTNESS_DOWN;
3003 inc = value > current_value ? 1 : -1;
3004 for (i = current_value; i != value; i += inc) {
3005 if (issue_thinkpad_cmos_command(cmos_cmd))
3006 return -EIO;
3007 if (!acpi_ec_write(brightness_offset, i + inc))
3008 return -EIO;
3009 }
3010
3011 return 0;
3012 }
3013
3014 static int brightness_read(char *p)
3015 {
3016 int len = 0;
3017 int level;
3018
3019 if ((level = brightness_get(NULL)) < 0) {
3020 len += sprintf(p + len, "level:\t\tunreadable\n");
3021 } else {
3022 len += sprintf(p + len, "level:\t\t%d\n", level & 0x7);
3023 len += sprintf(p + len, "commands:\tup, down\n");
3024 len += sprintf(p + len, "commands:\tlevel <level>"
3025 " (<level> is 0-7)\n");
3026 }
3027
3028 return len;
3029 }
3030
3031 static int brightness_write(char *buf)
3032 {
3033 int level;
3034 int new_level;
3035 char *cmd;
3036
3037 while ((cmd = next_cmd(&buf))) {
3038 if ((level = brightness_get(NULL)) < 0)
3039 return level;
3040 level &= 7;
3041
3042 if (strlencmp(cmd, "up") == 0) {
3043 new_level = level == 7 ? 7 : level + 1;
3044 } else if (strlencmp(cmd, "down") == 0) {
3045 new_level = level == 0 ? 0 : level - 1;
3046 } else if (sscanf(cmd, "level %d", &new_level) == 1 &&
3047 new_level >= 0 && new_level <= 7) {
3048 /* new_level set */
3049 } else
3050 return -EINVAL;
3051
3052 brightness_set(new_level);
3053 }
3054
3055 return 0;
3056 }
3057
3058 static struct ibm_struct brightness_driver_data = {
3059 .name = "brightness",
3060 .read = brightness_read,
3061 .write = brightness_write,
3062 .exit = brightness_exit,
3063 };
3064
3065 /*************************************************************************
3066 * Volume subdriver
3067 */
3068
3069 static int volume_read(char *p)
3070 {
3071 int len = 0;
3072 u8 level;
3073
3074 if (!acpi_ec_read(volume_offset, &level)) {
3075 len += sprintf(p + len, "level:\t\tunreadable\n");
3076 } else {
3077 len += sprintf(p + len, "level:\t\t%d\n", level & 0xf);
3078 len += sprintf(p + len, "mute:\t\t%s\n", onoff(level, 6));
3079 len += sprintf(p + len, "commands:\tup, down, mute\n");
3080 len += sprintf(p + len, "commands:\tlevel <level>"
3081 " (<level> is 0-15)\n");
3082 }
3083
3084 return len;
3085 }
3086
3087 static int volume_write(char *buf)
3088 {
3089 int cmos_cmd, inc, i;
3090 u8 level, mute;
3091 int new_level, new_mute;
3092 char *cmd;
3093
3094 while ((cmd = next_cmd(&buf))) {
3095 if (!acpi_ec_read(volume_offset, &level))
3096 return -EIO;
3097 new_mute = mute = level & 0x40;
3098 new_level = level = level & 0xf;
3099
3100 if (strlencmp(cmd, "up") == 0) {
3101 if (mute)
3102 new_mute = 0;
3103 else
3104 new_level = level == 15 ? 15 : level + 1;
3105 } else if (strlencmp(cmd, "down") == 0) {
3106 if (mute)
3107 new_mute = 0;
3108 else
3109 new_level = level == 0 ? 0 : level - 1;
3110 } else if (sscanf(cmd, "level %d", &new_level) == 1 &&
3111 new_level >= 0 && new_level <= 15) {
3112 /* new_level set */
3113 } else if (strlencmp(cmd, "mute") == 0) {
3114 new_mute = 0x40;
3115 } else
3116 return -EINVAL;
3117
3118 if (new_level != level) { /* mute doesn't change */
3119 cmos_cmd = new_level > level ? TP_CMOS_VOLUME_UP : TP_CMOS_VOLUME_DOWN;
3120 inc = new_level > level ? 1 : -1;
3121
3122 if (mute && (issue_thinkpad_cmos_command(cmos_cmd) ||
3123 !acpi_ec_write(volume_offset, level)))
3124 return -EIO;
3125
3126 for (i = level; i != new_level; i += inc)
3127 if (issue_thinkpad_cmos_command(cmos_cmd) ||
3128 !acpi_ec_write(volume_offset, i + inc))
3129 return -EIO;
3130
3131 if (mute && (issue_thinkpad_cmos_command(TP_CMOS_VOLUME_MUTE) ||
3132 !acpi_ec_write(volume_offset,
3133 new_level + mute)))
3134 return -EIO;
3135 }
3136
3137 if (new_mute != mute) { /* level doesn't change */
3138 cmos_cmd = new_mute ? TP_CMOS_VOLUME_MUTE : TP_CMOS_VOLUME_UP;
3139
3140 if (issue_thinkpad_cmos_command(cmos_cmd) ||
3141 !acpi_ec_write(volume_offset, level + new_mute))
3142 return -EIO;
3143 }
3144 }
3145
3146 return 0;
3147 }
3148
3149 static struct ibm_struct volume_driver_data = {
3150 .name = "volume",
3151 .read = volume_read,
3152 .write = volume_write,
3153 };
3154
3155 /*************************************************************************
3156 * Fan subdriver
3157 */
3158
3159 /*
3160 * FAN ACCESS MODES
3161 *
3162 * TPACPI_FAN_RD_ACPI_GFAN:
3163 * ACPI GFAN method: returns fan level
3164 *
3165 * see TPACPI_FAN_WR_ACPI_SFAN
3166 * EC 0x2f (HFSP) not available if GFAN exists
3167 *
3168 * TPACPI_FAN_WR_ACPI_SFAN:
3169 * ACPI SFAN method: sets fan level, 0 (stop) to 7 (max)
3170 *
3171 * EC 0x2f (HFSP) might be available *for reading*, but do not use
3172 * it for writing.
3173 *
3174 * TPACPI_FAN_WR_TPEC:
3175 * ThinkPad EC register 0x2f (HFSP): fan control loop mode
3176 * Supported on almost all ThinkPads
3177 *
3178 * Fan speed changes of any sort (including those caused by the
3179 * disengaged mode) are usually done slowly by the firmware as the
3180 * maximum ammount of fan duty cycle change per second seems to be
3181 * limited.
3182 *
3183 * Reading is not available if GFAN exists.
3184 * Writing is not available if SFAN exists.
3185 *
3186 * Bits
3187 * 7 automatic mode engaged;
3188 * (default operation mode of the ThinkPad)
3189 * fan level is ignored in this mode.
3190 * 6 full speed mode (takes precedence over bit 7);
3191 * not available on all thinkpads. May disable
3192 * the tachometer while the fan controller ramps up
3193 * the speed (which can take up to a few *minutes*).
3194 * Speeds up fan to 100% duty-cycle, which is far above
3195 * the standard RPM levels. It is not impossible that
3196 * it could cause hardware damage.
3197 * 5-3 unused in some models. Extra bits for fan level
3198 * in others, but still useless as all values above
3199 * 7 map to the same speed as level 7 in these models.
3200 * 2-0 fan level (0..7 usually)
3201 * 0x00 = stop
3202 * 0x07 = max (set when temperatures critical)
3203 * Some ThinkPads may have other levels, see
3204 * TPACPI_FAN_WR_ACPI_FANS (X31/X40/X41)
3205 *
3206 * FIRMWARE BUG: on some models, EC 0x2f might not be initialized at
3207 * boot. Apparently the EC does not intialize it, so unless ACPI DSDT
3208 * does so, its initial value is meaningless (0x07).
3209 *
3210 * For firmware bugs, refer to:
3211 * http://thinkwiki.org/wiki/Embedded_Controller_Firmware#Firmware_Issues
3212 *
3213 * ----
3214 *
3215 * ThinkPad EC register 0x84 (LSB), 0x85 (MSB):
3216 * Main fan tachometer reading (in RPM)
3217 *
3218 * This register is present on all ThinkPads with a new-style EC, and
3219 * it is known not to be present on the A21m/e, and T22, as there is
3220 * something else in offset 0x84 according to the ACPI DSDT. Other
3221 * ThinkPads from this same time period (and earlier) probably lack the
3222 * tachometer as well.
3223 *
3224 * Unfortunately a lot of ThinkPads with new-style ECs but whose firwmare
3225 * was never fixed by IBM to report the EC firmware version string
3226 * probably support the tachometer (like the early X models), so
3227 * detecting it is quite hard. We need more data to know for sure.
3228 *
3229 * FIRMWARE BUG: always read 0x84 first, otherwise incorrect readings
3230 * might result.
3231 *
3232 * FIRMWARE BUG: may go stale while the EC is switching to full speed
3233 * mode.
3234 *
3235 * For firmware bugs, refer to:
3236 * http://thinkwiki.org/wiki/Embedded_Controller_Firmware#Firmware_Issues
3237 *
3238 * TPACPI_FAN_WR_ACPI_FANS:
3239 * ThinkPad X31, X40, X41. Not available in the X60.
3240 *
3241 * FANS ACPI handle: takes three arguments: low speed, medium speed,
3242 * high speed. ACPI DSDT seems to map these three speeds to levels
3243 * as follows: STOP LOW LOW MED MED HIGH HIGH HIGH HIGH
3244 * (this map is stored on FAN0..FAN8 as "0,1,1,2,2,3,3,3,3")
3245 *
3246 * The speeds are stored on handles
3247 * (FANA:FAN9), (FANC:FANB), (FANE:FAND).
3248 *
3249 * There are three default speed sets, acessible as handles:
3250 * FS1L,FS1M,FS1H; FS2L,FS2M,FS2H; FS3L,FS3M,FS3H
3251 *
3252 * ACPI DSDT switches which set is in use depending on various
3253 * factors.
3254 *
3255 * TPACPI_FAN_WR_TPEC is also available and should be used to
3256 * command the fan. The X31/X40/X41 seems to have 8 fan levels,
3257 * but the ACPI tables just mention level 7.
3258 */
3259
3260 static enum fan_status_access_mode fan_status_access_mode;
3261 static enum fan_control_access_mode fan_control_access_mode;
3262 static enum fan_control_commands fan_control_commands;
3263
3264 static u8 fan_control_initial_status;
3265 static u8 fan_control_desired_level;
3266
3267 static void fan_watchdog_fire(struct work_struct *ignored);
3268 static int fan_watchdog_maxinterval;
3269 static DECLARE_DELAYED_WORK(fan_watchdog_task, fan_watchdog_fire);
3270
3271 IBM_HANDLE(fans, ec, "FANS"); /* X31, X40, X41 */
3272 IBM_HANDLE(gfan, ec, "GFAN", /* 570 */
3273 "\\FSPD", /* 600e/x, 770e, 770x */
3274 ); /* all others */
3275 IBM_HANDLE(sfan, ec, "SFAN", /* 570 */
3276 "JFNS", /* 770x-JL */
3277 ); /* all others */
3278
3279 /*
3280 * SYSFS fan layout: hwmon compatible (device)
3281 *
3282 * pwm*_enable:
3283 * 0: "disengaged" mode
3284 * 1: manual mode
3285 * 2: native EC "auto" mode (recommended, hardware default)
3286 *
3287 * pwm*: set speed in manual mode, ignored otherwise.
3288 * 0 is level 0; 255 is level 7. Intermediate points done with linear
3289 * interpolation.
3290 *
3291 * fan*_input: tachometer reading, RPM
3292 *
3293 *
3294 * SYSFS fan layout: extensions
3295 *
3296 * fan_watchdog (driver):
3297 * fan watchdog interval in seconds, 0 disables (default), max 120
3298 */
3299
3300 /* sysfs fan pwm1_enable ----------------------------------------------- */
3301 static ssize_t fan_pwm1_enable_show(struct device *dev,
3302 struct device_attribute *attr,
3303 char *buf)
3304 {
3305 int res, mode;
3306 u8 status;
3307
3308 res = fan_get_status_safe(&status);
3309 if (res)
3310 return res;
3311
3312 if (unlikely(tp_features.fan_ctrl_status_undef)) {
3313 if (status != fan_control_initial_status) {
3314 tp_features.fan_ctrl_status_undef = 0;
3315 } else {
3316 /* Return most likely status. In fact, it
3317 * might be the only possible status */
3318 status = TP_EC_FAN_AUTO;
3319 }
3320 }
3321
3322 if (status & TP_EC_FAN_FULLSPEED) {
3323 mode = 0;
3324 } else if (status & TP_EC_FAN_AUTO) {
3325 mode = 2;
3326 } else
3327 mode = 1;
3328
3329 return snprintf(buf, PAGE_SIZE, "%d\n", mode);
3330 }
3331
3332 static ssize_t fan_pwm1_enable_store(struct device *dev,
3333 struct device_attribute *attr,
3334 const char *buf, size_t count)
3335 {
3336 unsigned long t;
3337 int res, level;
3338
3339 if (parse_strtoul(buf, 2, &t))
3340 return -EINVAL;
3341
3342 switch (t) {
3343 case 0:
3344 level = TP_EC_FAN_FULLSPEED;
3345 break;
3346 case 1:
3347 level = TPACPI_FAN_LAST_LEVEL;
3348 break;
3349 case 2:
3350 level = TP_EC_FAN_AUTO;
3351 break;
3352 case 3:
3353 /* reserved for software-controlled auto mode */
3354 return -ENOSYS;
3355 default:
3356 return -EINVAL;
3357 }
3358
3359 res = fan_set_level_safe(level);
3360 if (res == -ENXIO)
3361 return -EINVAL;
3362 else if (res < 0)
3363 return res;
3364
3365 fan_watchdog_reset();
3366
3367 return count;
3368 }
3369
3370 static struct device_attribute dev_attr_fan_pwm1_enable =
3371 __ATTR(pwm1_enable, S_IWUSR | S_IRUGO,
3372 fan_pwm1_enable_show, fan_pwm1_enable_store);
3373
3374 /* sysfs fan pwm1 ------------------------------------------------------ */
3375 static ssize_t fan_pwm1_show(struct device *dev,
3376 struct device_attribute *attr,
3377 char *buf)
3378 {
3379 int res;
3380 u8 status;
3381
3382 res = fan_get_status_safe(&status);
3383 if (res)
3384 return res;
3385
3386 if (unlikely(tp_features.fan_ctrl_status_undef)) {
3387 if (status != fan_control_initial_status) {
3388 tp_features.fan_ctrl_status_undef = 0;
3389 } else {
3390 status = TP_EC_FAN_AUTO;
3391 }
3392 }
3393
3394 if ((status &
3395 (TP_EC_FAN_AUTO | TP_EC_FAN_FULLSPEED)) != 0)
3396 status = fan_control_desired_level;
3397
3398 if (status > 7)
3399 status = 7;
3400
3401 return snprintf(buf, PAGE_SIZE, "%u\n", (status * 255) / 7);
3402 }
3403
3404 static ssize_t fan_pwm1_store(struct device *dev,
3405 struct device_attribute *attr,
3406 const char *buf, size_t count)
3407 {
3408 unsigned long s;
3409 int rc;
3410 u8 status, newlevel;
3411
3412 if (parse_strtoul(buf, 255, &s))
3413 return -EINVAL;
3414
3415 /* scale down from 0-255 to 0-7 */
3416 newlevel = (s >> 5) & 0x07;
3417
3418 rc = mutex_lock_interruptible(&fan_mutex);
3419 if (rc < 0)
3420 return rc;
3421
3422 rc = fan_get_status(&status);
3423 if (!rc && (status &
3424 (TP_EC_FAN_AUTO | TP_EC_FAN_FULLSPEED)) == 0) {
3425 rc = fan_set_level(newlevel);
3426 if (rc == -ENXIO)
3427 rc = -EINVAL;
3428 else if (!rc) {
3429 fan_update_desired_level(newlevel);
3430 fan_watchdog_reset();
3431 }
3432 }
3433
3434 mutex_unlock(&fan_mutex);
3435 return (rc)? rc : count;
3436 }
3437
3438 static struct device_attribute dev_attr_fan_pwm1 =
3439 __ATTR(pwm1, S_IWUSR | S_IRUGO,
3440 fan_pwm1_show, fan_pwm1_store);
3441
3442 /* sysfs fan fan1_input ------------------------------------------------ */
3443 static ssize_t fan_fan1_input_show(struct device *dev,
3444 struct device_attribute *attr,
3445 char *buf)
3446 {
3447 int res;
3448 unsigned int speed;
3449
3450 res = fan_get_speed(&speed);
3451 if (res < 0)
3452 return res;
3453
3454 return snprintf(buf, PAGE_SIZE, "%u\n", speed);
3455 }
3456
3457 static struct device_attribute dev_attr_fan_fan1_input =
3458 __ATTR(fan1_input, S_IRUGO,
3459 fan_fan1_input_show, NULL);
3460
3461 /* sysfs fan fan_watchdog (driver) ------------------------------------- */
3462 static ssize_t fan_fan_watchdog_show(struct device_driver *drv,
3463 char *buf)
3464 {
3465 return snprintf(buf, PAGE_SIZE, "%u\n", fan_watchdog_maxinterval);
3466 }
3467
3468 static ssize_t fan_fan_watchdog_store(struct device_driver *drv,
3469 const char *buf, size_t count)
3470 {
3471 unsigned long t;
3472
3473 if (parse_strtoul(buf, 120, &t))
3474 return -EINVAL;
3475
3476 if (!fan_control_allowed)
3477 return -EPERM;
3478
3479 fan_watchdog_maxinterval = t;
3480 fan_watchdog_reset();
3481
3482 return count;
3483 }
3484
3485 static DRIVER_ATTR(fan_watchdog, S_IWUSR | S_IRUGO,
3486 fan_fan_watchdog_show, fan_fan_watchdog_store);
3487
3488 /* --------------------------------------------------------------------- */
3489 static struct attribute *fan_attributes[] = {
3490 &dev_attr_fan_pwm1_enable.attr, &dev_attr_fan_pwm1.attr,
3491 &dev_attr_fan_fan1_input.attr,
3492 NULL
3493 };
3494
3495 static const struct attribute_group fan_attr_group = {
3496 .attrs = fan_attributes,
3497 };
3498
3499 static int __init fan_init(struct ibm_init_struct *iibm)
3500 {
3501 int rc;
3502
3503 vdbg_printk(TPACPI_DBG_INIT, "initializing fan subdriver\n");
3504
3505 mutex_init(&fan_mutex);
3506 fan_status_access_mode = TPACPI_FAN_NONE;
3507 fan_control_access_mode = TPACPI_FAN_WR_NONE;
3508 fan_control_commands = 0;
3509 fan_watchdog_maxinterval = 0;
3510 tp_features.fan_ctrl_status_undef = 0;
3511 fan_control_desired_level = 7;
3512
3513 IBM_ACPIHANDLE_INIT(fans);
3514 IBM_ACPIHANDLE_INIT(gfan);
3515 IBM_ACPIHANDLE_INIT(sfan);
3516
3517 if (gfan_handle) {
3518 /* 570, 600e/x, 770e, 770x */
3519 fan_status_access_mode = TPACPI_FAN_RD_ACPI_GFAN;
3520 } else {
3521 /* all other ThinkPads: note that even old-style
3522 * ThinkPad ECs supports the fan control register */
3523 if (likely(acpi_ec_read(fan_status_offset,
3524 &fan_control_initial_status))) {
3525 fan_status_access_mode = TPACPI_FAN_RD_TPEC;
3526
3527 /* In some ThinkPads, neither the EC nor the ACPI
3528 * DSDT initialize the fan status, and it ends up
3529 * being set to 0x07 when it *could* be either
3530 * 0x07 or 0x80.
3531 *
3532 * Enable for TP-1Y (T43), TP-78 (R51e),
3533 * TP-76 (R52), TP-70 (T43, R52), which are known
3534 * to be buggy. */
3535 if (fan_control_initial_status == 0x07 &&
3536 ibm_thinkpad_ec_found &&
3537 ((ibm_thinkpad_ec_found[0] == '1' &&
3538 ibm_thinkpad_ec_found[1] == 'Y') ||
3539 (ibm_thinkpad_ec_found[0] == '7' &&
3540 (ibm_thinkpad_ec_found[1] == '6' ||
3541 ibm_thinkpad_ec_found[1] == '8' ||
3542 ibm_thinkpad_ec_found[1] == '0'))
3543 )) {
3544 printk(IBM_NOTICE
3545 "fan_init: initial fan status is "
3546 "unknown, assuming it is in auto "
3547 "mode\n");
3548 tp_features.fan_ctrl_status_undef = 1;
3549 }
3550 } else {
3551 printk(IBM_ERR
3552 "ThinkPad ACPI EC access misbehaving, "
3553 "fan status and control unavailable\n");
3554 return 1;
3555 }
3556 }
3557
3558 if (sfan_handle) {
3559 /* 570, 770x-JL */
3560 fan_control_access_mode = TPACPI_FAN_WR_ACPI_SFAN;
3561 fan_control_commands |=
3562 TPACPI_FAN_CMD_LEVEL | TPACPI_FAN_CMD_ENABLE;
3563 } else {
3564 if (!gfan_handle) {
3565 /* gfan without sfan means no fan control */
3566 /* all other models implement TP EC 0x2f control */
3567
3568 if (fans_handle) {
3569 /* X31, X40, X41 */
3570 fan_control_access_mode =
3571 TPACPI_FAN_WR_ACPI_FANS;
3572 fan_control_commands |=
3573 TPACPI_FAN_CMD_SPEED |
3574 TPACPI_FAN_CMD_LEVEL |
3575 TPACPI_FAN_CMD_ENABLE;
3576 } else {
3577 fan_control_access_mode = TPACPI_FAN_WR_TPEC;
3578 fan_control_commands |=
3579 TPACPI_FAN_CMD_LEVEL |
3580 TPACPI_FAN_CMD_ENABLE;
3581 }
3582 }
3583 }
3584
3585 vdbg_printk(TPACPI_DBG_INIT, "fan is %s, modes %d, %d\n",
3586 str_supported(fan_status_access_mode != TPACPI_FAN_NONE ||
3587 fan_control_access_mode != TPACPI_FAN_WR_NONE),
3588 fan_status_access_mode, fan_control_access_mode);
3589
3590 /* fan control master switch */
3591 if (!fan_control_allowed) {
3592 fan_control_access_mode = TPACPI_FAN_WR_NONE;
3593 fan_control_commands = 0;
3594 dbg_printk(TPACPI_DBG_INIT,
3595 "fan control features disabled by parameter\n");
3596 }
3597
3598 /* update fan_control_desired_level */
3599 if (fan_status_access_mode != TPACPI_FAN_NONE)
3600 fan_get_status_safe(NULL);
3601
3602 if (fan_status_access_mode != TPACPI_FAN_NONE ||
3603 fan_control_access_mode != TPACPI_FAN_WR_NONE) {
3604 rc = sysfs_create_group(&tpacpi_pdev->dev.kobj,
3605 &fan_attr_group);
3606 if (!(rc < 0))
3607 rc = driver_create_file(&tpacpi_pdriver.driver,
3608 &driver_attr_fan_watchdog);
3609 if (rc < 0)
3610 return rc;
3611 return 0;
3612 } else
3613 return 1;
3614 }
3615
3616 /*
3617 * Call with fan_mutex held
3618 */
3619 static void fan_update_desired_level(u8 status)
3620 {
3621 if ((status &
3622 (TP_EC_FAN_AUTO | TP_EC_FAN_FULLSPEED)) == 0) {
3623 if (status > 7)
3624 fan_control_desired_level = 7;
3625 else
3626 fan_control_desired_level = status;
3627 }
3628 }
3629
3630 static int fan_get_status(u8 *status)
3631 {
3632 u8 s;
3633
3634 /* TODO:
3635 * Add TPACPI_FAN_RD_ACPI_FANS ? */
3636
3637 switch (fan_status_access_mode) {
3638 case TPACPI_FAN_RD_ACPI_GFAN:
3639 /* 570, 600e/x, 770e, 770x */
3640
3641 if (unlikely(!acpi_evalf(gfan_handle, &s, NULL, "d")))
3642 return -EIO;
3643
3644 if (likely(status))
3645 *status = s & 0x07;
3646
3647 break;
3648
3649 case TPACPI_FAN_RD_TPEC:
3650 /* all except 570, 600e/x, 770e, 770x */
3651 if (unlikely(!acpi_ec_read(fan_status_offset, &s)))
3652 return -EIO;
3653
3654 if (likely(status))
3655 *status = s;
3656
3657 break;
3658
3659 default:
3660 return -ENXIO;
3661 }
3662
3663 return 0;
3664 }
3665
3666 static int fan_get_status_safe(u8 *status)
3667 {
3668 int rc;
3669 u8 s;
3670
3671 rc = mutex_lock_interruptible(&fan_mutex);
3672 if (rc < 0)
3673 return rc;
3674 rc = fan_get_status(&s);
3675 if (!rc)
3676 fan_update_desired_level(s);
3677 mutex_unlock(&fan_mutex);
3678
3679 if (status)
3680 *status = s;
3681
3682 return rc;
3683 }
3684
3685 static void fan_exit(void)
3686 {
3687 vdbg_printk(TPACPI_DBG_EXIT, "cancelling any pending fan watchdog tasks\n");
3688
3689 /* FIXME: can we really do this unconditionally? */
3690 sysfs_remove_group(&tpacpi_pdev->dev.kobj, &fan_attr_group);
3691 driver_remove_file(&tpacpi_pdriver.driver, &driver_attr_fan_watchdog);
3692
3693 cancel_delayed_work(&fan_watchdog_task);
3694 flush_scheduled_work();
3695 }
3696
3697 static int fan_get_speed(unsigned int *speed)
3698 {
3699 u8 hi, lo;
3700
3701 switch (fan_status_access_mode) {
3702 case TPACPI_FAN_RD_TPEC:
3703 /* all except 570, 600e/x, 770e, 770x */
3704 if (unlikely(!acpi_ec_read(fan_rpm_offset, &lo) ||
3705 !acpi_ec_read(fan_rpm_offset + 1, &hi)))
3706 return -EIO;
3707
3708 if (likely(speed))
3709 *speed = (hi << 8) | lo;
3710
3711 break;
3712
3713 default:
3714 return -ENXIO;
3715 }
3716
3717 return 0;
3718 }
3719
3720 static void fan_watchdog_fire(struct work_struct *ignored)
3721 {
3722 int rc;
3723
3724 printk(IBM_NOTICE "fan watchdog: enabling fan\n");
3725 rc = fan_set_enable();
3726 if (rc < 0) {
3727 printk(IBM_ERR "fan watchdog: error %d while enabling fan, "
3728 "will try again later...\n", -rc);
3729 /* reschedule for later */
3730 fan_watchdog_reset();
3731 }
3732 }
3733
3734 static void fan_watchdog_reset(void)
3735 {
3736 static int fan_watchdog_active;
3737
3738 if (fan_control_access_mode == TPACPI_FAN_WR_NONE)
3739 return;
3740
3741 if (fan_watchdog_active)
3742 cancel_delayed_work(&fan_watchdog_task);
3743
3744 if (fan_watchdog_maxinterval > 0) {
3745 fan_watchdog_active = 1;
3746 if (!schedule_delayed_work(&fan_watchdog_task,
3747 msecs_to_jiffies(fan_watchdog_maxinterval
3748 * 1000))) {
3749 printk(IBM_ERR "failed to schedule the fan watchdog, "
3750 "watchdog will not trigger\n");
3751 }
3752 } else
3753 fan_watchdog_active = 0;
3754 }
3755
3756 static int fan_set_level(int level)
3757 {
3758 if (!fan_control_allowed)
3759 return -EPERM;
3760
3761 switch (fan_control_access_mode) {
3762 case TPACPI_FAN_WR_ACPI_SFAN:
3763 if (level >= 0 && level <= 7) {
3764 if (!acpi_evalf(sfan_handle, NULL, NULL, "vd", level))
3765 return -EIO;
3766 } else
3767 return -EINVAL;
3768 break;
3769
3770 case TPACPI_FAN_WR_ACPI_FANS:
3771 case TPACPI_FAN_WR_TPEC:
3772 if ((level != TP_EC_FAN_AUTO) &&
3773 (level != TP_EC_FAN_FULLSPEED) &&
3774 ((level < 0) || (level > 7)))
3775 return -EINVAL;
3776
3777 /* safety net should the EC not support AUTO
3778 * or FULLSPEED mode bits and just ignore them */
3779 if (level & TP_EC_FAN_FULLSPEED)
3780 level |= 7; /* safety min speed 7 */
3781 else if (level & TP_EC_FAN_FULLSPEED)
3782 level |= 4; /* safety min speed 4 */
3783
3784 if (!acpi_ec_write(fan_status_offset, level))
3785 return -EIO;
3786 else
3787 tp_features.fan_ctrl_status_undef = 0;
3788 break;
3789
3790 default:
3791 return -ENXIO;
3792 }
3793 return 0;
3794 }
3795
3796 static int fan_set_level_safe(int level)
3797 {
3798 int rc;
3799
3800 if (!fan_control_allowed)
3801 return -EPERM;
3802
3803 rc = mutex_lock_interruptible(&fan_mutex);
3804 if (rc < 0)
3805 return rc;
3806
3807 if (level == TPACPI_FAN_LAST_LEVEL)
3808 level = fan_control_desired_level;
3809
3810 rc = fan_set_level(level);
3811 if (!rc)
3812 fan_update_desired_level(level);
3813
3814 mutex_unlock(&fan_mutex);
3815 return rc;
3816 }
3817
3818 static int fan_set_enable(void)
3819 {
3820 u8 s;
3821 int rc;
3822
3823 if (!fan_control_allowed)
3824 return -EPERM;
3825
3826 rc = mutex_lock_interruptible(&fan_mutex);
3827 if (rc < 0)
3828 return rc;
3829
3830 switch (fan_control_access_mode) {
3831 case TPACPI_FAN_WR_ACPI_FANS:
3832 case TPACPI_FAN_WR_TPEC:
3833 rc = fan_get_status(&s);
3834 if (rc < 0)
3835 break;
3836
3837 /* Don't go out of emergency fan mode */
3838 if (s != 7) {
3839 s &= 0x07;
3840 s |= TP_EC_FAN_AUTO | 4; /* min fan speed 4 */
3841 }
3842
3843 if (!acpi_ec_write(fan_status_offset, s))
3844 rc = -EIO;
3845 else {
3846 tp_features.fan_ctrl_status_undef = 0;
3847 rc = 0;
3848 }
3849 break;
3850
3851 case TPACPI_FAN_WR_ACPI_SFAN:
3852 rc = fan_get_status(&s);
3853 if (rc < 0)
3854 break;
3855
3856 s &= 0x07;
3857
3858 /* Set fan to at least level 4 */
3859 s |= 4;
3860
3861 if (!acpi_evalf(sfan_handle, NULL, NULL, "vd", s))
3862 rc= -EIO;
3863 else
3864 rc = 0;
3865 break;
3866
3867 default:
3868 rc = -ENXIO;
3869 }
3870
3871 mutex_unlock(&fan_mutex);
3872 return rc;
3873 }
3874
3875 static int fan_set_disable(void)
3876 {
3877 int rc;
3878
3879 if (!fan_control_allowed)
3880 return -EPERM;
3881
3882 rc = mutex_lock_interruptible(&fan_mutex);
3883 if (rc < 0)
3884 return rc;
3885
3886 rc = 0;
3887 switch (fan_control_access_mode) {
3888 case TPACPI_FAN_WR_ACPI_FANS:
3889 case TPACPI_FAN_WR_TPEC:
3890 if (!acpi_ec_write(fan_status_offset, 0x00))
3891 rc = -EIO;
3892 else {
3893 fan_control_desired_level = 0;
3894 tp_features.fan_ctrl_status_undef = 0;
3895 }
3896 break;
3897
3898 case TPACPI_FAN_WR_ACPI_SFAN:
3899 if (!acpi_evalf(sfan_handle, NULL, NULL, "vd", 0x00))
3900 rc = -EIO;
3901 else
3902 fan_control_desired_level = 0;
3903 break;
3904
3905 default:
3906 rc = -ENXIO;
3907 }
3908
3909
3910 mutex_unlock(&fan_mutex);
3911 return rc;
3912 }
3913
3914 static int fan_set_speed(int speed)
3915 {
3916 int rc;
3917
3918 if (!fan_control_allowed)
3919 return -EPERM;
3920
3921 rc = mutex_lock_interruptible(&fan_mutex);
3922 if (rc < 0)
3923 return rc;
3924
3925 rc = 0;
3926 switch (fan_control_access_mode) {
3927 case TPACPI_FAN_WR_ACPI_FANS:
3928 if (speed >= 0 && speed <= 65535) {
3929 if (!acpi_evalf(fans_handle, NULL, NULL, "vddd",
3930 speed, speed, speed))
3931 rc = -EIO;
3932 } else
3933 rc = -EINVAL;
3934 break;
3935
3936 default:
3937 rc = -ENXIO;
3938 }
3939
3940 mutex_unlock(&fan_mutex);
3941 return rc;
3942 }
3943
3944 static int fan_read(char *p)
3945 {
3946 int len = 0;
3947 int rc;
3948 u8 status;
3949 unsigned int speed = 0;
3950
3951 switch (fan_status_access_mode) {
3952 case TPACPI_FAN_RD_ACPI_GFAN:
3953 /* 570, 600e/x, 770e, 770x */
3954 if ((rc = fan_get_status_safe(&status)) < 0)
3955 return rc;
3956
3957 len += sprintf(p + len, "status:\t\t%s\n"
3958 "level:\t\t%d\n",
3959 (status != 0) ? "enabled" : "disabled", status);
3960 break;
3961
3962 case TPACPI_FAN_RD_TPEC:
3963 /* all except 570, 600e/x, 770e, 770x */
3964 if ((rc = fan_get_status_safe(&status)) < 0)
3965 return rc;
3966
3967 if (unlikely(tp_features.fan_ctrl_status_undef)) {
3968 if (status != fan_control_initial_status)
3969 tp_features.fan_ctrl_status_undef = 0;
3970 else
3971 /* Return most likely status. In fact, it
3972 * might be the only possible status */
3973 status = TP_EC_FAN_AUTO;
3974 }
3975
3976 len += sprintf(p + len, "status:\t\t%s\n",
3977 (status != 0) ? "enabled" : "disabled");
3978
3979 if ((rc = fan_get_speed(&speed)) < 0)
3980 return rc;
3981
3982 len += sprintf(p + len, "speed:\t\t%d\n", speed);
3983
3984 if (status & TP_EC_FAN_FULLSPEED)
3985 /* Disengaged mode takes precedence */
3986 len += sprintf(p + len, "level:\t\tdisengaged\n");
3987 else if (status & TP_EC_FAN_AUTO)
3988 len += sprintf(p + len, "level:\t\tauto\n");
3989 else
3990 len += sprintf(p + len, "level:\t\t%d\n", status);
3991 break;
3992
3993 case TPACPI_FAN_NONE:
3994 default:
3995 len += sprintf(p + len, "status:\t\tnot supported\n");
3996 }
3997
3998 if (fan_control_commands & TPACPI_FAN_CMD_LEVEL) {
3999 len += sprintf(p + len, "commands:\tlevel <level>");
4000
4001 switch (fan_control_access_mode) {
4002 case TPACPI_FAN_WR_ACPI_SFAN:
4003 len += sprintf(p + len, " (<level> is 0-7)\n");
4004 break;
4005
4006 default:
4007 len += sprintf(p + len, " (<level> is 0-7, "
4008 "auto, disengaged, full-speed)\n");
4009 break;
4010 }
4011 }
4012
4013 if (fan_control_commands & TPACPI_FAN_CMD_ENABLE)
4014 len += sprintf(p + len, "commands:\tenable, disable\n"
4015 "commands:\twatchdog <timeout> (<timeout> is 0 (off), "
4016 "1-120 (seconds))\n");
4017
4018 if (fan_control_commands & TPACPI_FAN_CMD_SPEED)
4019 len += sprintf(p + len, "commands:\tspeed <speed>"
4020 " (<speed> is 0-65535)\n");
4021
4022 return len;
4023 }
4024
4025 static int fan_write_cmd_level(const char *cmd, int *rc)
4026 {
4027 int level;
4028
4029 if (strlencmp(cmd, "level auto") == 0)
4030 level = TP_EC_FAN_AUTO;
4031 else if ((strlencmp(cmd, "level disengaged") == 0) |
4032 (strlencmp(cmd, "level full-speed") == 0))
4033 level = TP_EC_FAN_FULLSPEED;
4034 else if (sscanf(cmd, "level %d", &level) != 1)
4035 return 0;
4036
4037 if ((*rc = fan_set_level_safe(level)) == -ENXIO)
4038 printk(IBM_ERR "level command accepted for unsupported "
4039 "access mode %d", fan_control_access_mode);
4040
4041 return 1;
4042 }
4043
4044 static int fan_write_cmd_enable(const char *cmd, int *rc)
4045 {
4046 if (strlencmp(cmd, "enable") != 0)
4047 return 0;
4048
4049 if ((*rc = fan_set_enable()) == -ENXIO)
4050 printk(IBM_ERR "enable command accepted for unsupported "
4051 "access mode %d", fan_control_access_mode);
4052
4053 return 1;
4054 }
4055
4056 static int fan_write_cmd_disable(const char *cmd, int *rc)
4057 {
4058 if (strlencmp(cmd, "disable") != 0)
4059 return 0;
4060
4061 if ((*rc = fan_set_disable()) == -ENXIO)
4062 printk(IBM_ERR "disable command accepted for unsupported "
4063 "access mode %d", fan_control_access_mode);
4064
4065 return 1;
4066 }
4067
4068 static int fan_write_cmd_speed(const char *cmd, int *rc)
4069 {
4070 int speed;
4071
4072 /* TODO:
4073 * Support speed <low> <medium> <high> ? */
4074
4075 if (sscanf(cmd, "speed %d", &speed) != 1)
4076 return 0;
4077
4078 if ((*rc = fan_set_speed(speed)) == -ENXIO)
4079 printk(IBM_ERR "speed command accepted for unsupported "
4080 "access mode %d", fan_control_access_mode);
4081
4082 return 1;
4083 }
4084
4085 static int fan_write_cmd_watchdog(const char *cmd, int *rc)
4086 {
4087 int interval;
4088
4089 if (sscanf(cmd, "watchdog %d", &interval) != 1)
4090 return 0;
4091
4092 if (interval < 0 || interval > 120)
4093 *rc = -EINVAL;
4094 else
4095 fan_watchdog_maxinterval = interval;
4096
4097 return 1;
4098 }
4099
4100 static int fan_write(char *buf)
4101 {
4102 char *cmd;
4103 int rc = 0;
4104
4105 while (!rc && (cmd = next_cmd(&buf))) {
4106 if (!((fan_control_commands & TPACPI_FAN_CMD_LEVEL) &&
4107 fan_write_cmd_level(cmd, &rc)) &&
4108 !((fan_control_commands & TPACPI_FAN_CMD_ENABLE) &&
4109 (fan_write_cmd_enable(cmd, &rc) ||
4110 fan_write_cmd_disable(cmd, &rc) ||
4111 fan_write_cmd_watchdog(cmd, &rc))) &&
4112 !((fan_control_commands & TPACPI_FAN_CMD_SPEED) &&
4113 fan_write_cmd_speed(cmd, &rc))
4114 )
4115 rc = -EINVAL;
4116 else if (!rc)
4117 fan_watchdog_reset();
4118 }
4119
4120 return rc;
4121 }
4122
4123 static struct ibm_struct fan_driver_data = {
4124 .name = "fan",
4125 .read = fan_read,
4126 .write = fan_write,
4127 .exit = fan_exit,
4128 };
4129
4130 /****************************************************************************
4131 ****************************************************************************
4132 *
4133 * Infrastructure
4134 *
4135 ****************************************************************************
4136 ****************************************************************************/
4137
4138 /* /proc support */
4139 static struct proc_dir_entry *proc_dir;
4140
4141 /* Subdriver registry */
4142 static LIST_HEAD(tpacpi_all_drivers);
4143
4144
4145 /*
4146 * Module and infrastructure proble, init and exit handling
4147 */
4148
4149 #ifdef CONFIG_THINKPAD_ACPI_DEBUG
4150 static const char * __init str_supported(int is_supported)
4151 {
4152 static char text_unsupported[] __initdata = "not supported";
4153
4154 return (is_supported)? &text_unsupported[4] : &text_unsupported[0];
4155 }
4156 #endif /* CONFIG_THINKPAD_ACPI_DEBUG */
4157
4158 static int __init ibm_init(struct ibm_init_struct *iibm)
4159 {
4160 int ret;
4161 struct ibm_struct *ibm = iibm->data;
4162 struct proc_dir_entry *entry;
4163
4164 BUG_ON(ibm == NULL);
4165
4166 INIT_LIST_HEAD(&ibm->all_drivers);
4167
4168 if (ibm->flags.experimental && !experimental)
4169 return 0;
4170
4171 dbg_printk(TPACPI_DBG_INIT,
4172 "probing for %s\n", ibm->name);
4173
4174 if (iibm->init) {
4175 ret = iibm->init(iibm);
4176 if (ret > 0)
4177 return 0; /* probe failed */
4178 if (ret)
4179 return ret;
4180
4181 ibm->flags.init_called = 1;
4182 }
4183
4184 if (ibm->acpi) {
4185 if (ibm->acpi->hid) {
4186 ret = register_tpacpi_subdriver(ibm);
4187 if (ret)
4188 goto err_out;
4189 }
4190
4191 if (ibm->acpi->notify) {
4192 ret = setup_acpi_notify(ibm);
4193 if (ret == -ENODEV) {
4194 printk(IBM_NOTICE "disabling subdriver %s\n",
4195 ibm->name);
4196 ret = 0;
4197 goto err_out;
4198 }
4199 if (ret < 0)
4200 goto err_out;
4201 }
4202 }
4203
4204 dbg_printk(TPACPI_DBG_INIT,
4205 "%s installed\n", ibm->name);
4206
4207 if (ibm->read) {
4208 entry = create_proc_entry(ibm->name,
4209 S_IFREG | S_IRUGO | S_IWUSR,
4210 proc_dir);
4211 if (!entry) {
4212 printk(IBM_ERR "unable to create proc entry %s\n",
4213 ibm->name);
4214 ret = -ENODEV;
4215 goto err_out;
4216 }
4217 entry->owner = THIS_MODULE;
4218 entry->data = ibm;
4219 entry->read_proc = &dispatch_procfs_read;
4220 if (ibm->write)
4221 entry->write_proc = &dispatch_procfs_write;
4222 ibm->flags.proc_created = 1;
4223 }
4224
4225 list_add_tail(&ibm->all_drivers, &tpacpi_all_drivers);
4226
4227 return 0;
4228
4229 err_out:
4230 dbg_printk(TPACPI_DBG_INIT,
4231 "%s: at error exit path with result %d\n",
4232 ibm->name, ret);
4233
4234 ibm_exit(ibm);
4235 return (ret < 0)? ret : 0;
4236 }
4237
4238 static void ibm_exit(struct ibm_struct *ibm)
4239 {
4240 dbg_printk(TPACPI_DBG_EXIT, "removing %s\n", ibm->name);
4241
4242 list_del_init(&ibm->all_drivers);
4243
4244 if (ibm->flags.acpi_notify_installed) {
4245 dbg_printk(TPACPI_DBG_EXIT,
4246 "%s: acpi_remove_notify_handler\n", ibm->name);
4247 BUG_ON(!ibm->acpi);
4248 acpi_remove_notify_handler(*ibm->acpi->handle,
4249 ibm->acpi->type,
4250 dispatch_acpi_notify);
4251 ibm->flags.acpi_notify_installed = 0;
4252 ibm->flags.acpi_notify_installed = 0;
4253 }
4254
4255 if (ibm->flags.proc_created) {
4256 dbg_printk(TPACPI_DBG_EXIT,
4257 "%s: remove_proc_entry\n", ibm->name);
4258 remove_proc_entry(ibm->name, proc_dir);
4259 ibm->flags.proc_created = 0;
4260 }
4261
4262 if (ibm->flags.acpi_driver_registered) {
4263 dbg_printk(TPACPI_DBG_EXIT,
4264 "%s: acpi_bus_unregister_driver\n", ibm->name);
4265 BUG_ON(!ibm->acpi);
4266 acpi_bus_unregister_driver(ibm->acpi->driver);
4267 kfree(ibm->acpi->driver);
4268 ibm->acpi->driver = NULL;
4269 ibm->flags.acpi_driver_registered = 0;
4270 }
4271
4272 if (ibm->flags.init_called && ibm->exit) {
4273 ibm->exit();
4274 ibm->flags.init_called = 0;
4275 }
4276
4277 dbg_printk(TPACPI_DBG_INIT, "finished removing %s\n", ibm->name);
4278 }
4279
4280 /* Probing */
4281
4282 static char *ibm_thinkpad_ec_found;
4283
4284 static char* __init check_dmi_for_ec(void)
4285 {
4286 struct dmi_device *dev = NULL;
4287 char ec_fw_string[18];
4288
4289 /*
4290 * ThinkPad T23 or newer, A31 or newer, R50e or newer,
4291 * X32 or newer, all Z series; Some models must have an
4292 * up-to-date BIOS or they will not be detected.
4293 *
4294 * See http://thinkwiki.org/wiki/List_of_DMI_IDs
4295 */
4296 while ((dev = dmi_find_device(DMI_DEV_TYPE_OEM_STRING, NULL, dev))) {
4297 if (sscanf(dev->name,
4298 "IBM ThinkPad Embedded Controller -[%17c",
4299 ec_fw_string) == 1) {
4300 ec_fw_string[sizeof(ec_fw_string) - 1] = 0;
4301 ec_fw_string[strcspn(ec_fw_string, " ]")] = 0;
4302 return kstrdup(ec_fw_string, GFP_KERNEL);
4303 }
4304 }
4305 return NULL;
4306 }
4307
4308 static int __init probe_for_thinkpad(void)
4309 {
4310 int is_thinkpad;
4311
4312 if (acpi_disabled)
4313 return -ENODEV;
4314
4315 /*
4316 * Non-ancient models have better DMI tagging, but very old models
4317 * don't.
4318 */
4319 is_thinkpad = dmi_name_in_vendors("ThinkPad");
4320
4321 /* ec is required because many other handles are relative to it */
4322 IBM_ACPIHANDLE_INIT(ec);
4323 if (!ec_handle) {
4324 if (is_thinkpad)
4325 printk(IBM_ERR
4326 "Not yet supported ThinkPad detected!\n");
4327 return -ENODEV;
4328 }
4329
4330 /*
4331 * Risks a regression on very old machines, but reduces potential
4332 * false positives a damn great deal
4333 */
4334 if (!is_thinkpad)
4335 is_thinkpad = dmi_name_in_vendors("IBM");
4336
4337 if (!is_thinkpad && !force_load)
4338 return -ENODEV;
4339
4340 return 0;
4341 }
4342
4343
4344 /* Module init, exit, parameters */
4345
4346 static struct ibm_init_struct ibms_init[] __initdata = {
4347 {
4348 .init = thinkpad_acpi_driver_init,
4349 .data = &thinkpad_acpi_driver_data,
4350 },
4351 {
4352 .init = hotkey_init,
4353 .data = &hotkey_driver_data,
4354 },
4355 {
4356 .init = bluetooth_init,
4357 .data = &bluetooth_driver_data,
4358 },
4359 {
4360 .init = wan_init,
4361 .data = &wan_driver_data,
4362 },
4363 {
4364 .init = video_init,
4365 .data = &video_driver_data,
4366 },
4367 {
4368 .init = light_init,
4369 .data = &light_driver_data,
4370 },
4371 #ifdef CONFIG_THINKPAD_ACPI_DOCK
4372 {
4373 .init = dock_init,
4374 .data = &dock_driver_data[0],
4375 },
4376 {
4377 .init = dock_init2,
4378 .data = &dock_driver_data[1],
4379 },
4380 #endif
4381 #ifdef CONFIG_THINKPAD_ACPI_BAY
4382 {
4383 .init = bay_init,
4384 .data = &bay_driver_data,
4385 },
4386 #endif
4387 {
4388 .init = cmos_init,
4389 .data = &cmos_driver_data,
4390 },
4391 {
4392 .init = led_init,
4393 .data = &led_driver_data,
4394 },
4395 {
4396 .init = beep_init,
4397 .data = &beep_driver_data,
4398 },
4399 {
4400 .init = thermal_init,
4401 .data = &thermal_driver_data,
4402 },
4403 {
4404 .data = &ecdump_driver_data,
4405 },
4406 {
4407 .init = brightness_init,
4408 .data = &brightness_driver_data,
4409 },
4410 {
4411 .data = &volume_driver_data,
4412 },
4413 {
4414 .init = fan_init,
4415 .data = &fan_driver_data,
4416 },
4417 };
4418
4419 static int __init set_ibm_param(const char *val, struct kernel_param *kp)
4420 {
4421 unsigned int i;
4422 struct ibm_struct *ibm;
4423
4424 for (i = 0; i < ARRAY_SIZE(ibms_init); i++) {
4425 ibm = ibms_init[i].data;
4426 BUG_ON(ibm == NULL);
4427
4428 if (strcmp(ibm->name, kp->name) == 0 && ibm->write) {
4429 if (strlen(val) > sizeof(ibms_init[i].param) - 2)
4430 return -ENOSPC;
4431 strcpy(ibms_init[i].param, val);
4432 strcat(ibms_init[i].param, ",");
4433 return 0;
4434 }
4435 }
4436
4437 return -EINVAL;
4438 }
4439
4440 static int experimental;
4441 module_param(experimental, int, 0);
4442
4443 static u32 dbg_level;
4444 module_param_named(debug, dbg_level, uint, 0);
4445
4446 static int force_load;
4447 module_param(force_load, bool, 0);
4448
4449 static int fan_control_allowed;
4450 module_param_named(fan_control, fan_control_allowed, bool, 0);
4451
4452 #define IBM_PARAM(feature) \
4453 module_param_call(feature, set_ibm_param, NULL, NULL, 0)
4454
4455 IBM_PARAM(hotkey);
4456 IBM_PARAM(bluetooth);
4457 IBM_PARAM(video);
4458 IBM_PARAM(light);
4459 #ifdef CONFIG_THINKPAD_ACPI_DOCK
4460 IBM_PARAM(dock);
4461 #endif
4462 #ifdef CONFIG_THINKPAD_ACPI_BAY
4463 IBM_PARAM(bay);
4464 #endif /* CONFIG_THINKPAD_ACPI_BAY */
4465 IBM_PARAM(cmos);
4466 IBM_PARAM(led);
4467 IBM_PARAM(beep);
4468 IBM_PARAM(ecdump);
4469 IBM_PARAM(brightness);
4470 IBM_PARAM(volume);
4471 IBM_PARAM(fan);
4472
4473 static int __init thinkpad_acpi_module_init(void)
4474 {
4475 int ret, i;
4476
4477 /* Driver-level probe */
4478 ret = probe_for_thinkpad();
4479 if (ret)
4480 return ret;
4481
4482 /* Driver initialization */
4483 ibm_thinkpad_ec_found = check_dmi_for_ec();
4484 IBM_ACPIHANDLE_INIT(ecrd);
4485 IBM_ACPIHANDLE_INIT(ecwr);
4486
4487 proc_dir = proc_mkdir(IBM_PROC_DIR, acpi_root_dir);
4488 if (!proc_dir) {
4489 printk(IBM_ERR "unable to create proc dir " IBM_PROC_DIR);
4490 thinkpad_acpi_module_exit();
4491 return -ENODEV;
4492 }
4493 proc_dir->owner = THIS_MODULE;
4494
4495 ret = platform_driver_register(&tpacpi_pdriver);
4496 if (ret) {
4497 printk(IBM_ERR "unable to register platform driver\n");
4498 thinkpad_acpi_module_exit();
4499 return ret;
4500 }
4501 ret = tpacpi_create_driver_attributes(&tpacpi_pdriver.driver);
4502 if (ret) {
4503 printk(IBM_ERR "unable to create sysfs driver attributes\n");
4504 thinkpad_acpi_module_exit();
4505 return ret;
4506 }
4507
4508
4509 /* Device initialization */
4510 tpacpi_pdev = platform_device_register_simple(IBM_DRVR_NAME, -1,
4511 NULL, 0);
4512 if (IS_ERR(tpacpi_pdev)) {
4513 ret = PTR_ERR(tpacpi_pdev);
4514 tpacpi_pdev = NULL;
4515 printk(IBM_ERR "unable to register platform device\n");
4516 thinkpad_acpi_module_exit();
4517 return ret;
4518 }
4519 tpacpi_hwmon = hwmon_device_register(&tpacpi_pdev->dev);
4520 if (IS_ERR(tpacpi_hwmon)) {
4521 ret = PTR_ERR(tpacpi_hwmon);
4522 tpacpi_hwmon = NULL;
4523 printk(IBM_ERR "unable to register hwmon device\n");
4524 thinkpad_acpi_module_exit();
4525 return ret;
4526 }
4527 tpacpi_inputdev = input_allocate_device();
4528 if (!tpacpi_inputdev) {
4529 printk(IBM_ERR "unable to allocate input device\n");
4530 thinkpad_acpi_module_exit();
4531 return -ENOMEM;
4532 } else {
4533 /* Prepare input device, but don't register */
4534 tpacpi_inputdev->name = "ThinkPad Extra Buttons";
4535 tpacpi_inputdev->phys = IBM_DRVR_NAME "/input0";
4536 tpacpi_inputdev->id.bustype = BUS_HOST;
4537 tpacpi_inputdev->id.vendor = TPACPI_HKEY_INPUT_VENDOR;
4538 tpacpi_inputdev->id.product = TPACPI_HKEY_INPUT_PRODUCT;
4539 tpacpi_inputdev->id.version = TPACPI_HKEY_INPUT_VERSION;
4540 }
4541 for (i = 0; i < ARRAY_SIZE(ibms_init); i++) {
4542 ret = ibm_init(&ibms_init[i]);
4543 if (ret >= 0 && *ibms_init[i].param)
4544 ret = ibms_init[i].data->write(ibms_init[i].param);
4545 if (ret < 0) {
4546 thinkpad_acpi_module_exit();
4547 return ret;
4548 }
4549 }
4550 ret = input_register_device(tpacpi_inputdev);
4551 if (ret < 0) {
4552 printk(IBM_ERR "unable to register input device\n");
4553 thinkpad_acpi_module_exit();
4554 return ret;
4555 } else {
4556 tp_features.input_device_registered = 1;
4557 }
4558
4559 return 0;
4560 }
4561
4562 static void thinkpad_acpi_module_exit(void)
4563 {
4564 struct ibm_struct *ibm, *itmp;
4565
4566 list_for_each_entry_safe_reverse(ibm, itmp,
4567 &tpacpi_all_drivers,
4568 all_drivers) {
4569 ibm_exit(ibm);
4570 }
4571
4572 dbg_printk(TPACPI_DBG_INIT, "finished subdriver exit path...\n");
4573
4574 if (tpacpi_inputdev) {
4575 if (tp_features.input_device_registered)
4576 input_unregister_device(tpacpi_inputdev);
4577 else
4578 input_free_device(tpacpi_inputdev);
4579 }
4580
4581 if (tpacpi_hwmon)
4582 hwmon_device_unregister(tpacpi_hwmon);
4583
4584 if (tpacpi_pdev)
4585 platform_device_unregister(tpacpi_pdev);
4586
4587 tpacpi_remove_driver_attributes(&tpacpi_pdriver.driver);
4588 platform_driver_unregister(&tpacpi_pdriver);
4589
4590 if (proc_dir)
4591 remove_proc_entry(IBM_PROC_DIR, acpi_root_dir);
4592
4593 kfree(ibm_thinkpad_ec_found);
4594 }
4595
4596 module_init(thinkpad_acpi_module_init);
4597 module_exit(thinkpad_acpi_module_exit);
Linux 2.6 ibm-acpi/thinkpad-acpi driver git tree