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ieee1394: sbp2: fix sbp2_remove_device for error cases
[usb.git] / drivers / misc / thinkpad_acpi.c
blobf6cd34a3dbaca218cf0ff8a19ff94d03c41cb8d7
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 "0.15"
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
415 ibm->acpi->driver->ops.add = &tpacpi_device_add;
416
417 rc = acpi_bus_register_driver(ibm->acpi->driver);
418 if (rc < 0) {
419 printk(IBM_ERR "acpi_bus_register_driver(%s) failed: %d\n",
420 ibm->name, rc);
421 kfree(ibm->acpi->driver);
422 ibm->acpi->driver = NULL;
423 } else if (!rc)
424 ibm->flags.acpi_driver_registered = 1;
425
426 return rc;
427 }
428
429
430 /****************************************************************************
431 ****************************************************************************
432 *
433 * Procfs Helpers
434 *
435 ****************************************************************************
436 ****************************************************************************/
437
438 static int dispatch_procfs_read(char *page, char **start, off_t off,
439 int count, int *eof, void *data)
440 {
441 struct ibm_struct *ibm = data;
442 int len;
443
444 if (!ibm || !ibm->read)
445 return -EINVAL;
446
447 len = ibm->read(page);
448 if (len < 0)
449 return len;
450
451 if (len <= off + count)
452 *eof = 1;
453 *start = page + off;
454 len -= off;
455 if (len > count)
456 len = count;
457 if (len < 0)
458 len = 0;
459
460 return len;
461 }
462
463 static int dispatch_procfs_write(struct file *file,
464 const char __user * userbuf,
465 unsigned long count, void *data)
466 {
467 struct ibm_struct *ibm = data;
468 char *kernbuf;
469 int ret;
470
471 if (!ibm || !ibm->write)
472 return -EINVAL;
473
474 kernbuf = kmalloc(count + 2, GFP_KERNEL);
475 if (!kernbuf)
476 return -ENOMEM;
477
478 if (copy_from_user(kernbuf, userbuf, count)) {
479 kfree(kernbuf);
480 return -EFAULT;
481 }
482
483 kernbuf[count] = 0;
484 strcat(kernbuf, ",");
485 ret = ibm->write(kernbuf);
486 if (ret == 0)
487 ret = count;
488
489 kfree(kernbuf);
490
491 return ret;
492 }
493
494 static char *next_cmd(char **cmds)
495 {
496 char *start = *cmds;
497 char *end;
498
499 while ((end = strchr(start, ',')) && end == start)
500 start = end + 1;
501
502 if (!end)
503 return NULL;
504
505 *end = 0;
506 *cmds = end + 1;
507 return start;
508 }
509
510
511 /****************************************************************************
512 ****************************************************************************
513 *
514 * Device model: input, hwmon and platform
515 *
516 ****************************************************************************
517 ****************************************************************************/
518
519 static struct platform_device *tpacpi_pdev;
520 static struct class_device *tpacpi_hwmon;
521 static struct input_dev *tpacpi_inputdev;
522
523
524 static int tpacpi_resume_handler(struct platform_device *pdev)
525 {
526 struct ibm_struct *ibm, *itmp;
527
528 list_for_each_entry_safe(ibm, itmp,
529 &tpacpi_all_drivers,
530 all_drivers) {
531 if (ibm->resume)
532 (ibm->resume)();
533 }
534
535 return 0;
536 }
537
538 static struct platform_driver tpacpi_pdriver = {
539 .driver = {
540 .name = IBM_DRVR_NAME,
541 .owner = THIS_MODULE,
542 },
543 .resume = tpacpi_resume_handler,
544 };
545
546
547 /*************************************************************************
548 * thinkpad-acpi driver attributes
549 */
550
551 /* interface_version --------------------------------------------------- */
552 static ssize_t tpacpi_driver_interface_version_show(
553 struct device_driver *drv,
554 char *buf)
555 {
556 return snprintf(buf, PAGE_SIZE, "0x%08x\n", TPACPI_SYSFS_VERSION);
557 }
558
559 static DRIVER_ATTR(interface_version, S_IRUGO,
560 tpacpi_driver_interface_version_show, NULL);
561
562 /* debug_level --------------------------------------------------------- */
563 static ssize_t tpacpi_driver_debug_show(struct device_driver *drv,
564 char *buf)
565 {
566 return snprintf(buf, PAGE_SIZE, "0x%04x\n", dbg_level);
567 }
568
569 static ssize_t tpacpi_driver_debug_store(struct device_driver *drv,
570 const char *buf, size_t count)
571 {
572 unsigned long t;
573
574 if (parse_strtoul(buf, 0xffff, &t))
575 return -EINVAL;
576
577 dbg_level = t;
578
579 return count;
580 }
581
582 static DRIVER_ATTR(debug_level, S_IWUSR | S_IRUGO,
583 tpacpi_driver_debug_show, tpacpi_driver_debug_store);
584
585 /* version ------------------------------------------------------------- */
586 static ssize_t tpacpi_driver_version_show(struct device_driver *drv,
587 char *buf)
588 {
589 return snprintf(buf, PAGE_SIZE, "%s v%s\n", IBM_DESC, IBM_VERSION);
590 }
591
592 static DRIVER_ATTR(version, S_IRUGO,
593 tpacpi_driver_version_show, NULL);
594
595 /* --------------------------------------------------------------------- */
596
597 static struct driver_attribute* tpacpi_driver_attributes[] = {
598 &driver_attr_debug_level, &driver_attr_version,
599 &driver_attr_interface_version,
600 };
601
602 static int __init tpacpi_create_driver_attributes(struct device_driver *drv)
603 {
604 int i, res;
605
606 i = 0;
607 res = 0;
608 while (!res && i < ARRAY_SIZE(tpacpi_driver_attributes)) {
609 res = driver_create_file(drv, tpacpi_driver_attributes[i]);
610 i++;
611 }
612
613 return res;
614 }
615
616 static void tpacpi_remove_driver_attributes(struct device_driver *drv)
617 {
618 int i;
619
620 for(i = 0; i < ARRAY_SIZE(tpacpi_driver_attributes); i++)
621 driver_remove_file(drv, tpacpi_driver_attributes[i]);
622 }
623
624 /*************************************************************************
625 * sysfs support helpers
626 */
627
628 struct attribute_set_obj {
629 struct attribute_set s;
630 struct attribute *a;
631 } __attribute__((packed));
632
633 static struct attribute_set *create_attr_set(unsigned int max_members,
634 const char* name)
635 {
636 struct attribute_set_obj *sobj;
637
638 if (max_members == 0)
639 return NULL;
640
641 /* Allocates space for implicit NULL at the end too */
642 sobj = kzalloc(sizeof(struct attribute_set_obj) +
643 max_members * sizeof(struct attribute *),
644 GFP_KERNEL);
645 if (!sobj)
646 return NULL;
647 sobj->s.max_members = max_members;
648 sobj->s.group.attrs = &sobj->a;
649 sobj->s.group.name = name;
650
651 return &sobj->s;
652 }
653
654 /* not multi-threaded safe, use it in a single thread per set */
655 static int add_to_attr_set(struct attribute_set* s, struct attribute *attr)
656 {
657 if (!s || !attr)
658 return -EINVAL;
659
660 if (s->members >= s->max_members)
661 return -ENOMEM;
662
663 s->group.attrs[s->members] = attr;
664 s->members++;
665
666 return 0;
667 }
668
669 static int add_many_to_attr_set(struct attribute_set* s,
670 struct attribute **attr,
671 unsigned int count)
672 {
673 int i, res;
674
675 for (i = 0; i < count; i++) {
676 res = add_to_attr_set(s, attr[i]);
677 if (res)
678 return res;
679 }
680
681 return 0;
682 }
683
684 static void delete_attr_set(struct attribute_set* s, struct kobject *kobj)
685 {
686 sysfs_remove_group(kobj, &s->group);
687 destroy_attr_set(s);
688 }
689
690 static int parse_strtoul(const char *buf,
691 unsigned long max, unsigned long *value)
692 {
693 char *endp;
694
695 *value = simple_strtoul(buf, &endp, 0);
696 while (*endp && isspace(*endp))
697 endp++;
698 if (*endp || *value > max)
699 return -EINVAL;
700
701 return 0;
702 }
703
704 /****************************************************************************
705 ****************************************************************************
706 *
707 * Subdrivers
708 *
709 ****************************************************************************
710 ****************************************************************************/
711
712 /*************************************************************************
713 * thinkpad-acpi init subdriver
714 */
715
716 static int __init thinkpad_acpi_driver_init(struct ibm_init_struct *iibm)
717 {
718 printk(IBM_INFO "%s v%s\n", IBM_DESC, IBM_VERSION);
719 printk(IBM_INFO "%s\n", IBM_URL);
720
721 printk(IBM_INFO "ThinkPad BIOS %s, EC %s\n",
722 (thinkpad_id.bios_version_str) ?
723 thinkpad_id.bios_version_str : "unknown",
724 (thinkpad_id.ec_version_str) ?
725 thinkpad_id.ec_version_str : "unknown");
726
727 if (thinkpad_id.vendor && thinkpad_id.model_str)
728 printk(IBM_INFO "%s %s\n",
729 (thinkpad_id.vendor == PCI_VENDOR_ID_IBM) ?
730 "IBM" : ((thinkpad_id.vendor ==
731 PCI_VENDOR_ID_LENOVO) ?
732 "Lenovo" : "Unknown vendor"),
733 thinkpad_id.model_str);
734
735 return 0;
736 }
737
738 static int thinkpad_acpi_driver_read(char *p)
739 {
740 int len = 0;
741
742 len += sprintf(p + len, "driver:\t\t%s\n", IBM_DESC);
743 len += sprintf(p + len, "version:\t%s\n", IBM_VERSION);
744
745 return len;
746 }
747
748 static struct ibm_struct thinkpad_acpi_driver_data = {
749 .name = "driver",
750 .read = thinkpad_acpi_driver_read,
751 };
752
753 /*************************************************************************
754 * Hotkey subdriver
755 */
756
757 static int hotkey_orig_status;
758 static u32 hotkey_orig_mask;
759 static u32 hotkey_all_mask;
760 static u32 hotkey_reserved_mask;
761
762 static u16 *hotkey_keycode_map;
763
764 static struct attribute_set *hotkey_dev_attributes;
765
766 static int hotkey_get_wlsw(int *status)
767 {
768 if (!acpi_evalf(hkey_handle, status, "WLSW", "d"))
769 return -EIO;
770 return 0;
771 }
772
773 /* sysfs hotkey enable ------------------------------------------------- */
774 static ssize_t hotkey_enable_show(struct device *dev,
775 struct device_attribute *attr,
776 char *buf)
777 {
778 int res, status;
779 u32 mask;
780
781 res = hotkey_get(&status, &mask);
782 if (res)
783 return res;
784
785 return snprintf(buf, PAGE_SIZE, "%d\n", status);
786 }
787
788 static ssize_t hotkey_enable_store(struct device *dev,
789 struct device_attribute *attr,
790 const char *buf, size_t count)
791 {
792 unsigned long t;
793 int res, status;
794 u32 mask;
795
796 if (parse_strtoul(buf, 1, &t))
797 return -EINVAL;
798
799 res = hotkey_get(&status, &mask);
800 if (!res)
801 res = hotkey_set(t, mask);
802
803 return (res) ? res : count;
804 }
805
806 static struct device_attribute dev_attr_hotkey_enable =
807 __ATTR(hotkey_enable, S_IWUSR | S_IRUGO,
808 hotkey_enable_show, hotkey_enable_store);
809
810 /* sysfs hotkey mask --------------------------------------------------- */
811 static ssize_t hotkey_mask_show(struct device *dev,
812 struct device_attribute *attr,
813 char *buf)
814 {
815 int res, status;
816 u32 mask;
817
818 res = hotkey_get(&status, &mask);
819 if (res)
820 return res;
821
822 return snprintf(buf, PAGE_SIZE, "0x%08x\n", mask);
823 }
824
825 static ssize_t hotkey_mask_store(struct device *dev,
826 struct device_attribute *attr,
827 const char *buf, size_t count)
828 {
829 unsigned long t;
830 int res, status;
831 u32 mask;
832
833 if (parse_strtoul(buf, 0xffffffffUL, &t))
834 return -EINVAL;
835
836 res = hotkey_get(&status, &mask);
837 if (!res)
838 hotkey_set(status, t);
839
840 return (res) ? res : count;
841 }
842
843 static struct device_attribute dev_attr_hotkey_mask =
844 __ATTR(hotkey_mask, S_IWUSR | S_IRUGO,
845 hotkey_mask_show, hotkey_mask_store);
846
847 /* sysfs hotkey bios_enabled ------------------------------------------- */
848 static ssize_t hotkey_bios_enabled_show(struct device *dev,
849 struct device_attribute *attr,
850 char *buf)
851 {
852 return snprintf(buf, PAGE_SIZE, "%d\n", hotkey_orig_status);
853 }
854
855 static struct device_attribute dev_attr_hotkey_bios_enabled =
856 __ATTR(hotkey_bios_enabled, S_IRUGO, hotkey_bios_enabled_show, NULL);
857
858 /* sysfs hotkey bios_mask ---------------------------------------------- */
859 static ssize_t hotkey_bios_mask_show(struct device *dev,
860 struct device_attribute *attr,
861 char *buf)
862 {
863 return snprintf(buf, PAGE_SIZE, "0x%08x\n", hotkey_orig_mask);
864 }
865
866 static struct device_attribute dev_attr_hotkey_bios_mask =
867 __ATTR(hotkey_bios_mask, S_IRUGO, hotkey_bios_mask_show, NULL);
868
869 /* sysfs hotkey all_mask ----------------------------------------------- */
870 static ssize_t hotkey_all_mask_show(struct device *dev,
871 struct device_attribute *attr,
872 char *buf)
873 {
874 return snprintf(buf, PAGE_SIZE, "0x%08x\n", hotkey_all_mask);
875 }
876
877 static struct device_attribute dev_attr_hotkey_all_mask =
878 __ATTR(hotkey_all_mask, S_IRUGO, hotkey_all_mask_show, NULL);
879
880 /* sysfs hotkey recommended_mask --------------------------------------- */
881 static ssize_t hotkey_recommended_mask_show(struct device *dev,
882 struct device_attribute *attr,
883 char *buf)
884 {
885 return snprintf(buf, PAGE_SIZE, "0x%08x\n",
886 hotkey_all_mask & ~hotkey_reserved_mask);
887 }
888
889 static struct device_attribute dev_attr_hotkey_recommended_mask =
890 __ATTR(hotkey_recommended_mask, S_IRUGO,
891 hotkey_recommended_mask_show, NULL);
892
893 /* sysfs hotkey radio_sw ----------------------------------------------- */
894 static ssize_t hotkey_radio_sw_show(struct device *dev,
895 struct device_attribute *attr,
896 char *buf)
897 {
898 int res, s;
899 res = hotkey_get_wlsw(&s);
900 if (res < 0)
901 return res;
902
903 return snprintf(buf, PAGE_SIZE, "%d\n", !!s);
904 }
905
906 static struct device_attribute dev_attr_hotkey_radio_sw =
907 __ATTR(hotkey_radio_sw, S_IRUGO, hotkey_radio_sw_show, NULL);
908
909 /* --------------------------------------------------------------------- */
910
911 static struct attribute *hotkey_mask_attributes[] = {
912 &dev_attr_hotkey_mask.attr,
913 &dev_attr_hotkey_bios_enabled.attr,
914 &dev_attr_hotkey_bios_mask.attr,
915 &dev_attr_hotkey_all_mask.attr,
916 &dev_attr_hotkey_recommended_mask.attr,
917 };
918
919 static int __init hotkey_init(struct ibm_init_struct *iibm)
920 {
921
922 static u16 ibm_keycode_map[] __initdata = {
923 /* Scan Codes 0x00 to 0x0B: ACPI HKEY FN+F1..F12 */
924 KEY_FN_F1, KEY_FN_F2, KEY_COFFEE, KEY_SLEEP,
925 KEY_WLAN, KEY_FN_F6, KEY_SWITCHVIDEOMODE, KEY_FN_F8,
926 KEY_FN_F9, KEY_FN_F10, KEY_FN_F11, KEY_SUSPEND,
927 /* Scan codes 0x0C to 0x0F: Other ACPI HKEY hot keys */
928 KEY_UNKNOWN, /* 0x0C: FN+BACKSPACE */
929 KEY_UNKNOWN, /* 0x0D: FN+INSERT */
930 KEY_UNKNOWN, /* 0x0E: FN+DELETE */
931 KEY_RESERVED, /* 0x0F: FN+HOME (brightness up) */
932 /* Scan codes 0x10 to 0x1F: Extended ACPI HKEY hot keys */
933 KEY_RESERVED, /* 0x10: FN+END (brightness down) */
934 KEY_RESERVED, /* 0x11: FN+PGUP (thinklight toggle) */
935 KEY_UNKNOWN, /* 0x12: FN+PGDOWN */
936 KEY_ZOOM, /* 0x13: FN+SPACE (zoom) */
937 KEY_RESERVED, /* 0x14: VOLUME UP */
938 KEY_RESERVED, /* 0x15: VOLUME DOWN */
939 KEY_RESERVED, /* 0x16: MUTE */
940 KEY_VENDOR, /* 0x17: Thinkpad/AccessIBM/Lenovo */
941 /* (assignments unknown, please report if found) */
942 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN,
943 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN,
944 };
945 static u16 lenovo_keycode_map[] __initdata = {
946 /* Scan Codes 0x00 to 0x0B: ACPI HKEY FN+F1..F12 */
947 KEY_FN_F1, KEY_COFFEE, KEY_BATTERY, KEY_SLEEP,
948 KEY_WLAN, KEY_FN_F6, KEY_SWITCHVIDEOMODE, KEY_FN_F8,
949 KEY_FN_F9, KEY_FN_F10, KEY_FN_F11, KEY_SUSPEND,
950 /* Scan codes 0x0C to 0x0F: Other ACPI HKEY hot keys */
951 KEY_UNKNOWN, /* 0x0C: FN+BACKSPACE */
952 KEY_UNKNOWN, /* 0x0D: FN+INSERT */
953 KEY_UNKNOWN, /* 0x0E: FN+DELETE */
954 KEY_BRIGHTNESSUP, /* 0x0F: FN+HOME (brightness up) */
955 /* Scan codes 0x10 to 0x1F: Extended ACPI HKEY hot keys */
956 KEY_BRIGHTNESSDOWN, /* 0x10: FN+END (brightness down) */
957 KEY_RESERVED, /* 0x11: FN+PGUP (thinklight toggle) */
958 KEY_UNKNOWN, /* 0x12: FN+PGDOWN */
959 KEY_ZOOM, /* 0x13: FN+SPACE (zoom) */
960 KEY_RESERVED, /* 0x14: VOLUME UP */
961 KEY_RESERVED, /* 0x15: VOLUME DOWN */
962 KEY_RESERVED, /* 0x16: MUTE */
963 KEY_VENDOR, /* 0x17: Thinkpad/AccessIBM/Lenovo */
964 /* (assignments unknown, please report if found) */
965 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN,
966 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN,
967 };
968
969 #define TPACPI_HOTKEY_MAP_LEN ARRAY_SIZE(ibm_keycode_map)
970 #define TPACPI_HOTKEY_MAP_SIZE sizeof(ibm_keycode_map)
971 #define TPACPI_HOTKEY_MAP_TYPESIZE sizeof(ibm_keycode_map[0])
972
973 int res, i;
974 int status;
975
976 vdbg_printk(TPACPI_DBG_INIT, "initializing hotkey subdriver\n");
977
978 BUG_ON(!tpacpi_inputdev);
979
980 IBM_ACPIHANDLE_INIT(hkey);
981 mutex_init(&hotkey_mutex);
982
983 /* hotkey not supported on 570 */
984 tp_features.hotkey = hkey_handle != NULL;
985
986 vdbg_printk(TPACPI_DBG_INIT, "hotkeys are %s\n",
987 str_supported(tp_features.hotkey));
988
989 if (tp_features.hotkey) {
990 hotkey_dev_attributes = create_attr_set(7, NULL);
991 if (!hotkey_dev_attributes)
992 return -ENOMEM;
993 res = add_to_attr_set(hotkey_dev_attributes,
994 &dev_attr_hotkey_enable.attr);
995 if (res)
996 return res;
997
998 /* mask not supported on 570, 600e/x, 770e, 770x, A21e, A2xm/p,
999 A30, R30, R31, T20-22, X20-21, X22-24 */
1000 tp_features.hotkey_mask =
1001 acpi_evalf(hkey_handle, NULL, "DHKN", "qv");
1002
1003 vdbg_printk(TPACPI_DBG_INIT, "hotkey masks are %s\n",
1004 str_supported(tp_features.hotkey_mask));
1005
1006 if (tp_features.hotkey_mask) {
1007 /* MHKA available in A31, R40, R40e, T4x, X31, and later */
1008 if (!acpi_evalf(hkey_handle, &hotkey_all_mask,
1009 "MHKA", "qd"))
1010 hotkey_all_mask = 0x080cU; /* FN+F12, FN+F4, FN+F3 */
1011 }
1012
1013 res = hotkey_get(&hotkey_orig_status, &hotkey_orig_mask);
1014 if (!res && tp_features.hotkey_mask) {
1015 res = add_many_to_attr_set(hotkey_dev_attributes,
1016 hotkey_mask_attributes,
1017 ARRAY_SIZE(hotkey_mask_attributes));
1018 }
1019
1020 /* Not all thinkpads have a hardware radio switch */
1021 if (!res && acpi_evalf(hkey_handle, &status, "WLSW", "qd")) {
1022 tp_features.hotkey_wlsw = 1;
1023 printk(IBM_INFO
1024 "radio switch found; radios are %s\n",
1025 enabled(status, 0));
1026 res = add_to_attr_set(hotkey_dev_attributes,
1027 &dev_attr_hotkey_radio_sw.attr);
1028 }
1029
1030 if (!res)
1031 res = register_attr_set_with_sysfs(
1032 hotkey_dev_attributes,
1033 &tpacpi_pdev->dev.kobj);
1034 if (res)
1035 return res;
1036
1037 /* Set up key map */
1038
1039 hotkey_keycode_map = kmalloc(TPACPI_HOTKEY_MAP_SIZE,
1040 GFP_KERNEL);
1041 if (!hotkey_keycode_map) {
1042 printk(IBM_ERR "failed to allocate memory for key map\n");
1043 return -ENOMEM;
1044 }
1045
1046 if (thinkpad_id.vendor == PCI_VENDOR_ID_LENOVO) {
1047 dbg_printk(TPACPI_DBG_INIT,
1048 "using Lenovo default hot key map\n");
1049 memcpy(hotkey_keycode_map, &lenovo_keycode_map,
1050 TPACPI_HOTKEY_MAP_SIZE);
1051 } else {
1052 dbg_printk(TPACPI_DBG_INIT,
1053 "using IBM default hot key map\n");
1054 memcpy(hotkey_keycode_map, &ibm_keycode_map,
1055 TPACPI_HOTKEY_MAP_SIZE);
1056 }
1057
1058 #ifndef CONFIG_THINKPAD_ACPI_INPUT_ENABLED
1059 for (i = 0; i < 12; i++)
1060 hotkey_keycode_map[i] = KEY_UNKNOWN;
1061 #endif /* ! CONFIG_THINKPAD_ACPI_INPUT_ENABLED */
1062
1063 set_bit(EV_KEY, tpacpi_inputdev->evbit);
1064 set_bit(EV_MSC, tpacpi_inputdev->evbit);
1065 set_bit(MSC_SCAN, tpacpi_inputdev->mscbit);
1066 tpacpi_inputdev->keycodesize = TPACPI_HOTKEY_MAP_TYPESIZE;
1067 tpacpi_inputdev->keycodemax = TPACPI_HOTKEY_MAP_LEN;
1068 tpacpi_inputdev->keycode = hotkey_keycode_map;
1069 for (i = 0; i < TPACPI_HOTKEY_MAP_LEN; i++) {
1070 if (hotkey_keycode_map[i] != KEY_RESERVED) {
1071 set_bit(hotkey_keycode_map[i],
1072 tpacpi_inputdev->keybit);
1073 } else {
1074 if (i < sizeof(hotkey_reserved_mask)*8)
1075 hotkey_reserved_mask |= 1 << i;
1076 }
1077 }
1078
1079 if (tp_features.hotkey_wlsw) {
1080 set_bit(EV_SW, tpacpi_inputdev->evbit);
1081 set_bit(SW_RADIO, tpacpi_inputdev->swbit);
1082 }
1083
1084 #ifdef CONFIG_THINKPAD_ACPI_INPUT_ENABLED
1085 dbg_printk(TPACPI_DBG_INIT,
1086 "enabling hot key handling\n");
1087 res = hotkey_set(1, (hotkey_all_mask & ~hotkey_reserved_mask)
1088 | hotkey_orig_mask);
1089 if (res)
1090 return res;
1091 #endif /* CONFIG_THINKPAD_ACPI_INPUT_ENABLED */
1092 }
1093
1094 return (tp_features.hotkey)? 0 : 1;
1095 }
1096
1097 static void hotkey_exit(void)
1098 {
1099 int res;
1100
1101 if (tp_features.hotkey) {
1102 dbg_printk(TPACPI_DBG_EXIT, "restoring original hotkey mask\n");
1103 res = hotkey_set(hotkey_orig_status, hotkey_orig_mask);
1104 if (res)
1105 printk(IBM_ERR "failed to restore hotkey to BIOS defaults\n");
1106 }
1107
1108 if (hotkey_dev_attributes) {
1109 delete_attr_set(hotkey_dev_attributes, &tpacpi_pdev->dev.kobj);
1110 hotkey_dev_attributes = NULL;
1111 }
1112 }
1113
1114 static void tpacpi_input_send_key(unsigned int scancode,
1115 unsigned int keycode)
1116 {
1117 if (keycode != KEY_RESERVED) {
1118 input_report_key(tpacpi_inputdev, keycode, 1);
1119 if (keycode == KEY_UNKNOWN)
1120 input_event(tpacpi_inputdev, EV_MSC, MSC_SCAN,
1121 scancode);
1122 input_sync(tpacpi_inputdev);
1123
1124 input_report_key(tpacpi_inputdev, keycode, 0);
1125 if (keycode == KEY_UNKNOWN)
1126 input_event(tpacpi_inputdev, EV_MSC, MSC_SCAN,
1127 scancode);
1128 input_sync(tpacpi_inputdev);
1129 }
1130 }
1131
1132 static void tpacpi_input_send_radiosw(void)
1133 {
1134 int wlsw;
1135
1136 if (tp_features.hotkey_wlsw && !hotkey_get_wlsw(&wlsw))
1137 input_report_switch(tpacpi_inputdev,
1138 SW_RADIO, !!wlsw);
1139 }
1140
1141 static void hotkey_notify(struct ibm_struct *ibm, u32 event)
1142 {
1143 u32 hkey;
1144 unsigned int keycode, scancode;
1145 int sendacpi = 1;
1146
1147 if (event == 0x80 && acpi_evalf(hkey_handle, &hkey, "MHKP", "d")) {
1148 if (tpacpi_inputdev->users > 0) {
1149 switch (hkey >> 12) {
1150 case 1:
1151 /* 0x1000-0x1FFF: key presses */
1152 scancode = hkey & 0xfff;
1153 if (scancode > 0 && scancode < 0x21) {
1154 scancode--;
1155 keycode = hotkey_keycode_map[scancode];
1156 tpacpi_input_send_key(scancode, keycode);
1157 sendacpi = (keycode == KEY_RESERVED
1158 || keycode == KEY_UNKNOWN);
1159 } else {
1160 printk(IBM_ERR
1161 "hotkey 0x%04x out of range for keyboard map\n",
1162 hkey);
1163 }
1164 break;
1165 case 5:
1166 /* 0x5000-0x5FFF: LID */
1167 /* we don't handle it through this path, just
1168 * eat up known LID events */
1169 if (hkey != 0x5001 && hkey != 0x5002) {
1170 printk(IBM_ERR
1171 "unknown LID-related hotkey event: 0x%04x\n",
1172 hkey);
1173 }
1174 break;
1175 case 7:
1176 /* 0x7000-0x7FFF: misc */
1177 if (tp_features.hotkey_wlsw && hkey == 0x7000) {
1178 tpacpi_input_send_radiosw();
1179 sendacpi = 0;
1180 break;
1181 }
1182 /* fallthrough to default */
1183 default:
1184 /* case 2: dock-related */
1185 /* 0x2305 - T43 waking up due to bay lever eject while aslept */
1186 /* case 3: ultra-bay related. maybe bay in dock? */
1187 /* 0x3003 - T43 after wake up by bay lever eject (0x2305) */
1188 printk(IBM_NOTICE "unhandled hotkey event 0x%04x\n", hkey);
1189 }
1190 }
1191
1192 if (sendacpi)
1193 acpi_bus_generate_event(ibm->acpi->device, event, hkey);
1194 } else {
1195 printk(IBM_ERR "unknown hotkey notification event %d\n", event);
1196 acpi_bus_generate_event(ibm->acpi->device, event, 0);
1197 }
1198 }
1199
1200 static void hotkey_resume(void)
1201 {
1202 tpacpi_input_send_radiosw();
1203 }
1204
1205 /*
1206 * Call with hotkey_mutex held
1207 */
1208 static int hotkey_get(int *status, u32 *mask)
1209 {
1210 if (!acpi_evalf(hkey_handle, status, "DHKC", "d"))
1211 return -EIO;
1212
1213 if (tp_features.hotkey_mask)
1214 if (!acpi_evalf(hkey_handle, mask, "DHKN", "d"))
1215 return -EIO;
1216
1217 return 0;
1218 }
1219
1220 /*
1221 * Call with hotkey_mutex held
1222 */
1223 static int hotkey_set(int status, u32 mask)
1224 {
1225 int i;
1226
1227 if (!acpi_evalf(hkey_handle, NULL, "MHKC", "vd", status))
1228 return -EIO;
1229
1230 if (tp_features.hotkey_mask)
1231 for (i = 0; i < 32; i++) {
1232 int bit = ((1 << i) & mask) != 0;
1233 if (!acpi_evalf(hkey_handle,
1234 NULL, "MHKM", "vdd", i + 1, bit))
1235 return -EIO;
1236 }
1237
1238 return 0;
1239 }
1240
1241 /* procfs -------------------------------------------------------------- */
1242 static int hotkey_read(char *p)
1243 {
1244 int res, status;
1245 u32 mask;
1246 int len = 0;
1247
1248 if (!tp_features.hotkey) {
1249 len += sprintf(p + len, "status:\t\tnot supported\n");
1250 return len;
1251 }
1252
1253 res = mutex_lock_interruptible(&hotkey_mutex);
1254 if (res < 0)
1255 return res;
1256 res = hotkey_get(&status, &mask);
1257 mutex_unlock(&hotkey_mutex);
1258 if (res)
1259 return res;
1260
1261 len += sprintf(p + len, "status:\t\t%s\n", enabled(status, 0));
1262 if (tp_features.hotkey_mask) {
1263 len += sprintf(p + len, "mask:\t\t0x%08x\n", mask);
1264 len += sprintf(p + len,
1265 "commands:\tenable, disable, reset, <mask>\n");
1266 } else {
1267 len += sprintf(p + len, "mask:\t\tnot supported\n");
1268 len += sprintf(p + len, "commands:\tenable, disable, reset\n");
1269 }
1270
1271 return len;
1272 }
1273
1274 static int hotkey_write(char *buf)
1275 {
1276 int res, status;
1277 u32 mask;
1278 char *cmd;
1279 int do_cmd = 0;
1280
1281 if (!tp_features.hotkey)
1282 return -ENODEV;
1283
1284 res = mutex_lock_interruptible(&hotkey_mutex);
1285 if (res < 0)
1286 return res;
1287
1288 res = hotkey_get(&status, &mask);
1289 if (res)
1290 goto errexit;
1291
1292 res = 0;
1293 while ((cmd = next_cmd(&buf))) {
1294 if (strlencmp(cmd, "enable") == 0) {
1295 status = 1;
1296 } else if (strlencmp(cmd, "disable") == 0) {
1297 status = 0;
1298 } else if (strlencmp(cmd, "reset") == 0) {
1299 status = hotkey_orig_status;
1300 mask = hotkey_orig_mask;
1301 } else if (sscanf(cmd, "0x%x", &mask) == 1) {
1302 /* mask set */
1303 } else if (sscanf(cmd, "%x", &mask) == 1) {
1304 /* mask set */
1305 } else {
1306 res = -EINVAL;
1307 goto errexit;
1308 }
1309 do_cmd = 1;
1310 }
1311
1312 if (do_cmd)
1313 res = hotkey_set(status, mask);
1314
1315 errexit:
1316 mutex_unlock(&hotkey_mutex);
1317 return res;
1318 }
1319
1320 static const struct acpi_device_id ibm_htk_device_ids[] = {
1321 {IBM_HKEY_HID, 0},
1322 {"", 0},
1323 };
1324
1325 static struct tp_acpi_drv_struct ibm_hotkey_acpidriver = {
1326 .hid = ibm_htk_device_ids,
1327 .notify = hotkey_notify,
1328 .handle = &hkey_handle,
1329 .type = ACPI_DEVICE_NOTIFY,
1330 };
1331
1332 static struct ibm_struct hotkey_driver_data = {
1333 .name = "hotkey",
1334 .read = hotkey_read,
1335 .write = hotkey_write,
1336 .exit = hotkey_exit,
1337 .resume = hotkey_resume,
1338 .acpi = &ibm_hotkey_acpidriver,
1339 };
1340
1341 /*************************************************************************
1342 * Bluetooth subdriver
1343 */
1344
1345 /* sysfs bluetooth enable ---------------------------------------------- */
1346 static ssize_t bluetooth_enable_show(struct device *dev,
1347 struct device_attribute *attr,
1348 char *buf)
1349 {
1350 int status;
1351
1352 status = bluetooth_get_radiosw();
1353 if (status < 0)
1354 return status;
1355
1356 return snprintf(buf, PAGE_SIZE, "%d\n", status ? 1 : 0);
1357 }
1358
1359 static ssize_t bluetooth_enable_store(struct device *dev,
1360 struct device_attribute *attr,
1361 const char *buf, size_t count)
1362 {
1363 unsigned long t;
1364 int res;
1365
1366 if (parse_strtoul(buf, 1, &t))
1367 return -EINVAL;
1368
1369 res = bluetooth_set_radiosw(t);
1370
1371 return (res) ? res : count;
1372 }
1373
1374 static struct device_attribute dev_attr_bluetooth_enable =
1375 __ATTR(bluetooth_enable, S_IWUSR | S_IRUGO,
1376 bluetooth_enable_show, bluetooth_enable_store);
1377
1378 /* --------------------------------------------------------------------- */
1379
1380 static struct attribute *bluetooth_attributes[] = {
1381 &dev_attr_bluetooth_enable.attr,
1382 NULL
1383 };
1384
1385 static const struct attribute_group bluetooth_attr_group = {
1386 .attrs = bluetooth_attributes,
1387 };
1388
1389 static int __init bluetooth_init(struct ibm_init_struct *iibm)
1390 {
1391 int res;
1392 int status = 0;
1393
1394 vdbg_printk(TPACPI_DBG_INIT, "initializing bluetooth subdriver\n");
1395
1396 IBM_ACPIHANDLE_INIT(hkey);
1397
1398 /* bluetooth not supported on 570, 600e/x, 770e, 770x, A21e, A2xm/p,
1399 G4x, R30, R31, R40e, R50e, T20-22, X20-21 */
1400 tp_features.bluetooth = hkey_handle &&
1401 acpi_evalf(hkey_handle, &status, "GBDC", "qd");
1402
1403 vdbg_printk(TPACPI_DBG_INIT, "bluetooth is %s, status 0x%02x\n",
1404 str_supported(tp_features.bluetooth),
1405 status);
1406
1407 if (tp_features.bluetooth) {
1408 if (!(status & TP_ACPI_BLUETOOTH_HWPRESENT)) {
1409 /* no bluetooth hardware present in system */
1410 tp_features.bluetooth = 0;
1411 dbg_printk(TPACPI_DBG_INIT,
1412 "bluetooth hardware not installed\n");
1413 } else {
1414 res = sysfs_create_group(&tpacpi_pdev->dev.kobj,
1415 &bluetooth_attr_group);
1416 if (res)
1417 return res;
1418 }
1419 }
1420
1421 return (tp_features.bluetooth)? 0 : 1;
1422 }
1423
1424 static void bluetooth_exit(void)
1425 {
1426 sysfs_remove_group(&tpacpi_pdev->dev.kobj,
1427 &bluetooth_attr_group);
1428 }
1429
1430 static int bluetooth_get_radiosw(void)
1431 {
1432 int status;
1433
1434 if (!tp_features.bluetooth)
1435 return -ENODEV;
1436
1437 if (!acpi_evalf(hkey_handle, &status, "GBDC", "d"))
1438 return -EIO;
1439
1440 return ((status & TP_ACPI_BLUETOOTH_RADIOSSW) != 0);
1441 }
1442
1443 static int bluetooth_set_radiosw(int radio_on)
1444 {
1445 int status;
1446
1447 if (!tp_features.bluetooth)
1448 return -ENODEV;
1449
1450 if (!acpi_evalf(hkey_handle, &status, "GBDC", "d"))
1451 return -EIO;
1452 if (radio_on)
1453 status |= TP_ACPI_BLUETOOTH_RADIOSSW;
1454 else
1455 status &= ~TP_ACPI_BLUETOOTH_RADIOSSW;
1456 if (!acpi_evalf(hkey_handle, NULL, "SBDC", "vd", status))
1457 return -EIO;
1458
1459 return 0;
1460 }
1461
1462 /* procfs -------------------------------------------------------------- */
1463 static int bluetooth_read(char *p)
1464 {
1465 int len = 0;
1466 int status = bluetooth_get_radiosw();
1467
1468 if (!tp_features.bluetooth)
1469 len += sprintf(p + len, "status:\t\tnot supported\n");
1470 else {
1471 len += sprintf(p + len, "status:\t\t%s\n",
1472 (status)? "enabled" : "disabled");
1473 len += sprintf(p + len, "commands:\tenable, disable\n");
1474 }
1475
1476 return len;
1477 }
1478
1479 static int bluetooth_write(char *buf)
1480 {
1481 char *cmd;
1482
1483 if (!tp_features.bluetooth)
1484 return -ENODEV;
1485
1486 while ((cmd = next_cmd(&buf))) {
1487 if (strlencmp(cmd, "enable") == 0) {
1488 bluetooth_set_radiosw(1);
1489 } else if (strlencmp(cmd, "disable") == 0) {
1490 bluetooth_set_radiosw(0);
1491 } else
1492 return -EINVAL;
1493 }
1494
1495 return 0;
1496 }
1497
1498 static struct ibm_struct bluetooth_driver_data = {
1499 .name = "bluetooth",
1500 .read = bluetooth_read,
1501 .write = bluetooth_write,
1502 .exit = bluetooth_exit,
1503 };
1504
1505 /*************************************************************************
1506 * Wan subdriver
1507 */
1508
1509 /* sysfs wan enable ---------------------------------------------------- */
1510 static ssize_t wan_enable_show(struct device *dev,
1511 struct device_attribute *attr,
1512 char *buf)
1513 {
1514 int status;
1515
1516 status = wan_get_radiosw();
1517 if (status < 0)
1518 return status;
1519
1520 return snprintf(buf, PAGE_SIZE, "%d\n", status ? 1 : 0);
1521 }
1522
1523 static ssize_t wan_enable_store(struct device *dev,
1524 struct device_attribute *attr,
1525 const char *buf, size_t count)
1526 {
1527 unsigned long t;
1528 int res;
1529
1530 if (parse_strtoul(buf, 1, &t))
1531 return -EINVAL;
1532
1533 res = wan_set_radiosw(t);
1534
1535 return (res) ? res : count;
1536 }
1537
1538 static struct device_attribute dev_attr_wan_enable =
1539 __ATTR(wwan_enable, S_IWUSR | S_IRUGO,
1540 wan_enable_show, wan_enable_store);
1541
1542 /* --------------------------------------------------------------------- */
1543
1544 static struct attribute *wan_attributes[] = {
1545 &dev_attr_wan_enable.attr,
1546 NULL
1547 };
1548
1549 static const struct attribute_group wan_attr_group = {
1550 .attrs = wan_attributes,
1551 };
1552
1553 static int __init wan_init(struct ibm_init_struct *iibm)
1554 {
1555 int res;
1556 int status = 0;
1557
1558 vdbg_printk(TPACPI_DBG_INIT, "initializing wan subdriver\n");
1559
1560 IBM_ACPIHANDLE_INIT(hkey);
1561
1562 tp_features.wan = hkey_handle &&
1563 acpi_evalf(hkey_handle, &status, "GWAN", "qd");
1564
1565 vdbg_printk(TPACPI_DBG_INIT, "wan is %s, status 0x%02x\n",
1566 str_supported(tp_features.wan),
1567 status);
1568
1569 if (tp_features.wan) {
1570 if (!(status & TP_ACPI_WANCARD_HWPRESENT)) {
1571 /* no wan hardware present in system */
1572 tp_features.wan = 0;
1573 dbg_printk(TPACPI_DBG_INIT,
1574 "wan hardware not installed\n");
1575 } else {
1576 res = sysfs_create_group(&tpacpi_pdev->dev.kobj,
1577 &wan_attr_group);
1578 if (res)
1579 return res;
1580 }
1581 }
1582
1583 return (tp_features.wan)? 0 : 1;
1584 }
1585
1586 static void wan_exit(void)
1587 {
1588 sysfs_remove_group(&tpacpi_pdev->dev.kobj,
1589 &wan_attr_group);
1590 }
1591
1592 static int wan_get_radiosw(void)
1593 {
1594 int status;
1595
1596 if (!tp_features.wan)
1597 return -ENODEV;
1598
1599 if (!acpi_evalf(hkey_handle, &status, "GWAN", "d"))
1600 return -EIO;
1601
1602 return ((status & TP_ACPI_WANCARD_RADIOSSW) != 0);
1603 }
1604
1605 static int wan_set_radiosw(int radio_on)
1606 {
1607 int status;
1608
1609 if (!tp_features.wan)
1610 return -ENODEV;
1611
1612 if (!acpi_evalf(hkey_handle, &status, "GWAN", "d"))
1613 return -EIO;
1614 if (radio_on)
1615 status |= TP_ACPI_WANCARD_RADIOSSW;
1616 else
1617 status &= ~TP_ACPI_WANCARD_RADIOSSW;
1618 if (!acpi_evalf(hkey_handle, NULL, "SWAN", "vd", status))
1619 return -EIO;
1620
1621 return 0;
1622 }
1623
1624 /* procfs -------------------------------------------------------------- */
1625 static int wan_read(char *p)
1626 {
1627 int len = 0;
1628 int status = wan_get_radiosw();
1629
1630 if (!tp_features.wan)
1631 len += sprintf(p + len, "status:\t\tnot supported\n");
1632 else {
1633 len += sprintf(p + len, "status:\t\t%s\n",
1634 (status)? "enabled" : "disabled");
1635 len += sprintf(p + len, "commands:\tenable, disable\n");
1636 }
1637
1638 return len;
1639 }
1640
1641 static int wan_write(char *buf)
1642 {
1643 char *cmd;
1644
1645 if (!tp_features.wan)
1646 return -ENODEV;
1647
1648 while ((cmd = next_cmd(&buf))) {
1649 if (strlencmp(cmd, "enable") == 0) {
1650 wan_set_radiosw(1);
1651 } else if (strlencmp(cmd, "disable") == 0) {
1652 wan_set_radiosw(0);
1653 } else
1654 return -EINVAL;
1655 }
1656
1657 return 0;
1658 }
1659
1660 static struct ibm_struct wan_driver_data = {
1661 .name = "wan",
1662 .read = wan_read,
1663 .write = wan_write,
1664 .exit = wan_exit,
1665 .flags.experimental = 1,
1666 };
1667
1668 /*************************************************************************
1669 * Video subdriver
1670 */
1671
1672 static enum video_access_mode video_supported;
1673 static int video_orig_autosw;
1674
1675 IBM_HANDLE(vid, root, "\\_SB.PCI.AGP.VGA", /* 570 */
1676 "\\_SB.PCI0.AGP0.VID0", /* 600e/x, 770x */
1677 "\\_SB.PCI0.VID0", /* 770e */
1678 "\\_SB.PCI0.VID", /* A21e, G4x, R50e, X30, X40 */
1679 "\\_SB.PCI0.AGP.VID", /* all others */
1680 ); /* R30, R31 */
1681
1682 IBM_HANDLE(vid2, root, "\\_SB.PCI0.AGPB.VID"); /* G41 */
1683
1684 static int __init video_init(struct ibm_init_struct *iibm)
1685 {
1686 int ivga;
1687
1688 vdbg_printk(TPACPI_DBG_INIT, "initializing video subdriver\n");
1689
1690 IBM_ACPIHANDLE_INIT(vid);
1691 IBM_ACPIHANDLE_INIT(vid2);
1692
1693 if (vid2_handle && acpi_evalf(NULL, &ivga, "\\IVGA", "d") && ivga)
1694 /* G41, assume IVGA doesn't change */
1695 vid_handle = vid2_handle;
1696
1697 if (!vid_handle)
1698 /* video switching not supported on R30, R31 */
1699 video_supported = TPACPI_VIDEO_NONE;
1700 else if (acpi_evalf(vid_handle, &video_orig_autosw, "SWIT", "qd"))
1701 /* 570 */
1702 video_supported = TPACPI_VIDEO_570;
1703 else if (acpi_evalf(vid_handle, &video_orig_autosw, "^VADL", "qd"))
1704 /* 600e/x, 770e, 770x */
1705 video_supported = TPACPI_VIDEO_770;
1706 else
1707 /* all others */
1708 video_supported = TPACPI_VIDEO_NEW;
1709
1710 vdbg_printk(TPACPI_DBG_INIT, "video is %s, mode %d\n",
1711 str_supported(video_supported != TPACPI_VIDEO_NONE),
1712 video_supported);
1713
1714 return (video_supported != TPACPI_VIDEO_NONE)? 0 : 1;
1715 }
1716
1717 static void video_exit(void)
1718 {
1719 dbg_printk(TPACPI_DBG_EXIT,
1720 "restoring original video autoswitch mode\n");
1721 if (video_autosw_set(video_orig_autosw))
1722 printk(IBM_ERR "error while trying to restore original "
1723 "video autoswitch mode\n");
1724 }
1725
1726 static int video_outputsw_get(void)
1727 {
1728 int status = 0;
1729 int i;
1730
1731 switch (video_supported) {
1732 case TPACPI_VIDEO_570:
1733 if (!acpi_evalf(NULL, &i, "\\_SB.PHS", "dd",
1734 TP_ACPI_VIDEO_570_PHSCMD))
1735 return -EIO;
1736 status = i & TP_ACPI_VIDEO_570_PHSMASK;
1737 break;
1738 case TPACPI_VIDEO_770:
1739 if (!acpi_evalf(NULL, &i, "\\VCDL", "d"))
1740 return -EIO;
1741 if (i)
1742 status |= TP_ACPI_VIDEO_S_LCD;
1743 if (!acpi_evalf(NULL, &i, "\\VCDC", "d"))
1744 return -EIO;
1745 if (i)
1746 status |= TP_ACPI_VIDEO_S_CRT;
1747 break;
1748 case TPACPI_VIDEO_NEW:
1749 if (!acpi_evalf(NULL, NULL, "\\VUPS", "vd", 1) ||
1750 !acpi_evalf(NULL, &i, "\\VCDC", "d"))
1751 return -EIO;
1752 if (i)
1753 status |= TP_ACPI_VIDEO_S_CRT;
1754
1755 if (!acpi_evalf(NULL, NULL, "\\VUPS", "vd", 0) ||
1756 !acpi_evalf(NULL, &i, "\\VCDL", "d"))
1757 return -EIO;
1758 if (i)
1759 status |= TP_ACPI_VIDEO_S_LCD;
1760 if (!acpi_evalf(NULL, &i, "\\VCDD", "d"))
1761 return -EIO;
1762 if (i)
1763 status |= TP_ACPI_VIDEO_S_DVI;
1764 break;
1765 default:
1766 return -ENOSYS;
1767 }
1768
1769 return status;
1770 }
1771
1772 static int video_outputsw_set(int status)
1773 {
1774 int autosw;
1775 int res = 0;
1776
1777 switch (video_supported) {
1778 case TPACPI_VIDEO_570:
1779 res = acpi_evalf(NULL, NULL,
1780 "\\_SB.PHS2", "vdd",
1781 TP_ACPI_VIDEO_570_PHS2CMD,
1782 status | TP_ACPI_VIDEO_570_PHS2SET);
1783 break;
1784 case TPACPI_VIDEO_770:
1785 autosw = video_autosw_get();
1786 if (autosw < 0)
1787 return autosw;
1788
1789 res = video_autosw_set(1);
1790 if (res)
1791 return res;
1792 res = acpi_evalf(vid_handle, NULL,
1793 "ASWT", "vdd", status * 0x100, 0);
1794 if (!autosw && video_autosw_set(autosw)) {
1795 printk(IBM_ERR "video auto-switch left enabled due to error\n");
1796 return -EIO;
1797 }
1798 break;
1799 case TPACPI_VIDEO_NEW:
1800 res = acpi_evalf(NULL, NULL, "\\VUPS", "vd", 0x80) &&
1801 acpi_evalf(NULL, NULL, "\\VSDS", "vdd", status, 1);
1802 break;
1803 default:
1804 return -ENOSYS;
1805 }
1806
1807 return (res)? 0 : -EIO;
1808 }
1809
1810 static int video_autosw_get(void)
1811 {
1812 int autosw = 0;
1813
1814 switch (video_supported) {
1815 case TPACPI_VIDEO_570:
1816 if (!acpi_evalf(vid_handle, &autosw, "SWIT", "d"))
1817 return -EIO;
1818 break;
1819 case TPACPI_VIDEO_770:
1820 case TPACPI_VIDEO_NEW:
1821 if (!acpi_evalf(vid_handle, &autosw, "^VDEE", "d"))
1822 return -EIO;
1823 break;
1824 default:
1825 return -ENOSYS;
1826 }
1827
1828 return autosw & 1;
1829 }
1830
1831 static int video_autosw_set(int enable)
1832 {
1833 if (!acpi_evalf(vid_handle, NULL, "_DOS", "vd", (enable)? 1 : 0))
1834 return -EIO;
1835 return 0;
1836 }
1837
1838 static int video_outputsw_cycle(void)
1839 {
1840 int autosw = video_autosw_get();
1841 int res;
1842
1843 if (autosw < 0)
1844 return autosw;
1845
1846 switch (video_supported) {
1847 case TPACPI_VIDEO_570:
1848 res = video_autosw_set(1);
1849 if (res)
1850 return res;
1851 res = acpi_evalf(ec_handle, NULL, "_Q16", "v");
1852 break;
1853 case TPACPI_VIDEO_770:
1854 case TPACPI_VIDEO_NEW:
1855 res = video_autosw_set(1);
1856 if (res)
1857 return res;
1858 res = acpi_evalf(vid_handle, NULL, "VSWT", "v");
1859 break;
1860 default:
1861 return -ENOSYS;
1862 }
1863 if (!autosw && video_autosw_set(autosw)) {
1864 printk(IBM_ERR "video auto-switch left enabled due to error\n");
1865 return -EIO;
1866 }
1867
1868 return (res)? 0 : -EIO;
1869 }
1870
1871 static int video_expand_toggle(void)
1872 {
1873 switch (video_supported) {
1874 case TPACPI_VIDEO_570:
1875 return acpi_evalf(ec_handle, NULL, "_Q17", "v")?
1876 0 : -EIO;
1877 case TPACPI_VIDEO_770:
1878 return acpi_evalf(vid_handle, NULL, "VEXP", "v")?
1879 0 : -EIO;
1880 case TPACPI_VIDEO_NEW:
1881 return acpi_evalf(NULL, NULL, "\\VEXP", "v")?
1882 0 : -EIO;
1883 default:
1884 return -ENOSYS;
1885 }
1886 /* not reached */
1887 }
1888
1889 static int video_read(char *p)
1890 {
1891 int status, autosw;
1892 int len = 0;
1893
1894 if (video_supported == TPACPI_VIDEO_NONE) {
1895 len += sprintf(p + len, "status:\t\tnot supported\n");
1896 return len;
1897 }
1898
1899 status = video_outputsw_get();
1900 if (status < 0)
1901 return status;
1902
1903 autosw = video_autosw_get();
1904 if (autosw < 0)
1905 return autosw;
1906
1907 len += sprintf(p + len, "status:\t\tsupported\n");
1908 len += sprintf(p + len, "lcd:\t\t%s\n", enabled(status, 0));
1909 len += sprintf(p + len, "crt:\t\t%s\n", enabled(status, 1));
1910 if (video_supported == TPACPI_VIDEO_NEW)
1911 len += sprintf(p + len, "dvi:\t\t%s\n", enabled(status, 3));
1912 len += sprintf(p + len, "auto:\t\t%s\n", enabled(autosw, 0));
1913 len += sprintf(p + len, "commands:\tlcd_enable, lcd_disable\n");
1914 len += sprintf(p + len, "commands:\tcrt_enable, crt_disable\n");
1915 if (video_supported == TPACPI_VIDEO_NEW)
1916 len += sprintf(p + len, "commands:\tdvi_enable, dvi_disable\n");
1917 len += sprintf(p + len, "commands:\tauto_enable, auto_disable\n");
1918 len += sprintf(p + len, "commands:\tvideo_switch, expand_toggle\n");
1919
1920 return len;
1921 }
1922
1923 static int video_write(char *buf)
1924 {
1925 char *cmd;
1926 int enable, disable, status;
1927 int res;
1928
1929 if (video_supported == TPACPI_VIDEO_NONE)
1930 return -ENODEV;
1931
1932 enable = 0;
1933 disable = 0;
1934
1935 while ((cmd = next_cmd(&buf))) {
1936 if (strlencmp(cmd, "lcd_enable") == 0) {
1937 enable |= TP_ACPI_VIDEO_S_LCD;
1938 } else if (strlencmp(cmd, "lcd_disable") == 0) {
1939 disable |= TP_ACPI_VIDEO_S_LCD;
1940 } else if (strlencmp(cmd, "crt_enable") == 0) {
1941 enable |= TP_ACPI_VIDEO_S_CRT;
1942 } else if (strlencmp(cmd, "crt_disable") == 0) {
1943 disable |= TP_ACPI_VIDEO_S_CRT;
1944 } else if (video_supported == TPACPI_VIDEO_NEW &&
1945 strlencmp(cmd, "dvi_enable") == 0) {
1946 enable |= TP_ACPI_VIDEO_S_DVI;
1947 } else if (video_supported == TPACPI_VIDEO_NEW &&
1948 strlencmp(cmd, "dvi_disable") == 0) {
1949 disable |= TP_ACPI_VIDEO_S_DVI;
1950 } else if (strlencmp(cmd, "auto_enable") == 0) {
1951 res = video_autosw_set(1);
1952 if (res)
1953 return res;
1954 } else if (strlencmp(cmd, "auto_disable") == 0) {
1955 res = video_autosw_set(0);
1956 if (res)
1957 return res;
1958 } else if (strlencmp(cmd, "video_switch") == 0) {
1959 res = video_outputsw_cycle();
1960 if (res)
1961 return res;
1962 } else if (strlencmp(cmd, "expand_toggle") == 0) {
1963 res = video_expand_toggle();
1964 if (res)
1965 return res;
1966 } else
1967 return -EINVAL;
1968 }
1969
1970 if (enable || disable) {
1971 status = video_outputsw_get();
1972 if (status < 0)
1973 return status;
1974 res = video_outputsw_set((status & ~disable) | enable);
1975 if (res)
1976 return res;
1977 }
1978
1979 return 0;
1980 }
1981
1982 static struct ibm_struct video_driver_data = {
1983 .name = "video",
1984 .read = video_read,
1985 .write = video_write,
1986 .exit = video_exit,
1987 };
1988
1989 /*************************************************************************
1990 * Light (thinklight) subdriver
1991 */
1992
1993 IBM_HANDLE(lght, root, "\\LGHT"); /* A21e, A2xm/p, T20-22, X20-21 */
1994 IBM_HANDLE(ledb, ec, "LEDB"); /* G4x */
1995
1996 static int __init light_init(struct ibm_init_struct *iibm)
1997 {
1998 vdbg_printk(TPACPI_DBG_INIT, "initializing light subdriver\n");
1999
2000 IBM_ACPIHANDLE_INIT(ledb);
2001 IBM_ACPIHANDLE_INIT(lght);
2002 IBM_ACPIHANDLE_INIT(cmos);
2003
2004 /* light not supported on 570, 600e/x, 770e, 770x, G4x, R30, R31 */
2005 tp_features.light = (cmos_handle || lght_handle) && !ledb_handle;
2006
2007 if (tp_features.light)
2008 /* light status not supported on
2009 570, 600e/x, 770e, 770x, G4x, R30, R31, R32, X20 */
2010 tp_features.light_status =
2011 acpi_evalf(ec_handle, NULL, "KBLT", "qv");
2012
2013 vdbg_printk(TPACPI_DBG_INIT, "light is %s\n",
2014 str_supported(tp_features.light));
2015
2016 return (tp_features.light)? 0 : 1;
2017 }
2018
2019 static int light_read(char *p)
2020 {
2021 int len = 0;
2022 int status = 0;
2023
2024 if (!tp_features.light) {
2025 len += sprintf(p + len, "status:\t\tnot supported\n");
2026 } else if (!tp_features.light_status) {
2027 len += sprintf(p + len, "status:\t\tunknown\n");
2028 len += sprintf(p + len, "commands:\ton, off\n");
2029 } else {
2030 if (!acpi_evalf(ec_handle, &status, "KBLT", "d"))
2031 return -EIO;
2032 len += sprintf(p + len, "status:\t\t%s\n", onoff(status, 0));
2033 len += sprintf(p + len, "commands:\ton, off\n");
2034 }
2035
2036 return len;
2037 }
2038
2039 static int light_write(char *buf)
2040 {
2041 int cmos_cmd, lght_cmd;
2042 char *cmd;
2043 int success;
2044
2045 if (!tp_features.light)
2046 return -ENODEV;
2047
2048 while ((cmd = next_cmd(&buf))) {
2049 if (strlencmp(cmd, "on") == 0) {
2050 cmos_cmd = 0x0c;
2051 lght_cmd = 1;
2052 } else if (strlencmp(cmd, "off") == 0) {
2053 cmos_cmd = 0x0d;
2054 lght_cmd = 0;
2055 } else
2056 return -EINVAL;
2057
2058 success = cmos_handle ?
2059 acpi_evalf(cmos_handle, NULL, NULL, "vd", cmos_cmd) :
2060 acpi_evalf(lght_handle, NULL, NULL, "vd", lght_cmd);
2061 if (!success)
2062 return -EIO;
2063 }
2064
2065 return 0;
2066 }
2067
2068 static struct ibm_struct light_driver_data = {
2069 .name = "light",
2070 .read = light_read,
2071 .write = light_write,
2072 };
2073
2074 /*************************************************************************
2075 * Dock subdriver
2076 */
2077
2078 #ifdef CONFIG_THINKPAD_ACPI_DOCK
2079
2080 IBM_HANDLE(dock, root, "\\_SB.GDCK", /* X30, X31, X40 */
2081 "\\_SB.PCI0.DOCK", /* 600e/x,770e,770x,A2xm/p,T20-22,X20-21 */
2082 "\\_SB.PCI0.PCI1.DOCK", /* all others */
2083 "\\_SB.PCI.ISA.SLCE", /* 570 */
2084 ); /* A21e,G4x,R30,R31,R32,R40,R40e,R50e */
2085
2086 /* don't list other alternatives as we install a notify handler on the 570 */
2087 IBM_HANDLE(pci, root, "\\_SB.PCI"); /* 570 */
2088
2089 static const struct acpi_device_id ibm_pci_device_ids[] = {
2090 {PCI_ROOT_HID_STRING, 0},
2091 {"", 0},
2092 };
2093
2094 static struct tp_acpi_drv_struct ibm_dock_acpidriver[2] = {
2095 {
2096 .notify = dock_notify,
2097 .handle = &dock_handle,
2098 .type = ACPI_SYSTEM_NOTIFY,
2099 },
2100 {
2101 /* THIS ONE MUST NEVER BE USED FOR DRIVER AUTOLOADING.
2102 * We just use it to get notifications of dock hotplug
2103 * in very old thinkpads */
2104 .hid = ibm_pci_device_ids,
2105 .notify = dock_notify,
2106 .handle = &pci_handle,
2107 .type = ACPI_SYSTEM_NOTIFY,
2108 },
2109 };
2110
2111 static struct ibm_struct dock_driver_data[2] = {
2112 {
2113 .name = "dock",
2114 .read = dock_read,
2115 .write = dock_write,
2116 .acpi = &ibm_dock_acpidriver[0],
2117 },
2118 {
2119 .name = "dock",
2120 .acpi = &ibm_dock_acpidriver[1],
2121 },
2122 };
2123
2124 #define dock_docked() (_sta(dock_handle) & 1)
2125
2126 static int __init dock_init(struct ibm_init_struct *iibm)
2127 {
2128 vdbg_printk(TPACPI_DBG_INIT, "initializing dock subdriver\n");
2129
2130 IBM_ACPIHANDLE_INIT(dock);
2131
2132 vdbg_printk(TPACPI_DBG_INIT, "dock is %s\n",
2133 str_supported(dock_handle != NULL));
2134
2135 return (dock_handle)? 0 : 1;
2136 }
2137
2138 static int __init dock_init2(struct ibm_init_struct *iibm)
2139 {
2140 int dock2_needed;
2141
2142 vdbg_printk(TPACPI_DBG_INIT, "initializing dock subdriver part 2\n");
2143
2144 if (dock_driver_data[0].flags.acpi_driver_registered &&
2145 dock_driver_data[0].flags.acpi_notify_installed) {
2146 IBM_ACPIHANDLE_INIT(pci);
2147 dock2_needed = (pci_handle != NULL);
2148 vdbg_printk(TPACPI_DBG_INIT,
2149 "dock PCI handler for the TP 570 is %s\n",
2150 str_supported(dock2_needed));
2151 } else {
2152 vdbg_printk(TPACPI_DBG_INIT,
2153 "dock subdriver part 2 not required\n");
2154 dock2_needed = 0;
2155 }
2156
2157 return (dock2_needed)? 0 : 1;
2158 }
2159
2160 static void dock_notify(struct ibm_struct *ibm, u32 event)
2161 {
2162 int docked = dock_docked();
2163 int pci = ibm->acpi->hid && ibm->acpi->device &&
2164 acpi_match_device_ids(ibm->acpi->device, ibm_pci_device_ids);
2165
2166 if (event == 1 && !pci) /* 570 */
2167 acpi_bus_generate_event(ibm->acpi->device, event, 1); /* button */
2168 else if (event == 1 && pci) /* 570 */
2169 acpi_bus_generate_event(ibm->acpi->device, event, 3); /* dock */
2170 else if (event == 3 && docked)
2171 acpi_bus_generate_event(ibm->acpi->device, event, 1); /* button */
2172 else if (event == 3 && !docked)
2173 acpi_bus_generate_event(ibm->acpi->device, event, 2); /* undock */
2174 else if (event == 0 && docked)
2175 acpi_bus_generate_event(ibm->acpi->device, event, 3); /* dock */
2176 else {
2177 printk(IBM_ERR "unknown dock event %d, status %d\n",
2178 event, _sta(dock_handle));
2179 acpi_bus_generate_event(ibm->acpi->device, event, 0); /* unknown */
2180 }
2181 }
2182
2183 static int dock_read(char *p)
2184 {
2185 int len = 0;
2186 int docked = dock_docked();
2187
2188 if (!dock_handle)
2189 len += sprintf(p + len, "status:\t\tnot supported\n");
2190 else if (!docked)
2191 len += sprintf(p + len, "status:\t\tundocked\n");
2192 else {
2193 len += sprintf(p + len, "status:\t\tdocked\n");
2194 len += sprintf(p + len, "commands:\tdock, undock\n");
2195 }
2196
2197 return len;
2198 }
2199
2200 static int dock_write(char *buf)
2201 {
2202 char *cmd;
2203
2204 if (!dock_docked())
2205 return -ENODEV;
2206
2207 while ((cmd = next_cmd(&buf))) {
2208 if (strlencmp(cmd, "undock") == 0) {
2209 if (!acpi_evalf(dock_handle, NULL, "_DCK", "vd", 0) ||
2210 !acpi_evalf(dock_handle, NULL, "_EJ0", "vd", 1))
2211 return -EIO;
2212 } else if (strlencmp(cmd, "dock") == 0) {
2213 if (!acpi_evalf(dock_handle, NULL, "_DCK", "vd", 1))
2214 return -EIO;
2215 } else
2216 return -EINVAL;
2217 }
2218
2219 return 0;
2220 }
2221
2222 #endif /* CONFIG_THINKPAD_ACPI_DOCK */
2223
2224 /*************************************************************************
2225 * Bay subdriver
2226 */
2227
2228 #ifdef CONFIG_THINKPAD_ACPI_BAY
2229 IBM_HANDLE(bay, root, "\\_SB.PCI.IDE.SECN.MAST", /* 570 */
2230 "\\_SB.PCI0.IDE0.IDES.IDSM", /* 600e/x, 770e, 770x */
2231 "\\_SB.PCI0.SATA.SCND.MSTR", /* T60, X60, Z60 */
2232 "\\_SB.PCI0.IDE0.SCND.MSTR", /* all others */
2233 ); /* A21e, R30, R31 */
2234 IBM_HANDLE(bay_ej, bay, "_EJ3", /* 600e/x, A2xm/p, A3x */
2235 "_EJ0", /* all others */
2236 ); /* 570,A21e,G4x,R30,R31,R32,R40e,R50e */
2237 IBM_HANDLE(bay2, root, "\\_SB.PCI0.IDE0.PRIM.SLAV", /* A3x, R32 */
2238 "\\_SB.PCI0.IDE0.IDEP.IDPS", /* 600e/x, 770e, 770x */
2239 ); /* all others */
2240 IBM_HANDLE(bay2_ej, bay2, "_EJ3", /* 600e/x, 770e, A3x */
2241 "_EJ0", /* 770x */
2242 ); /* all others */
2243
2244 static int __init bay_init(struct ibm_init_struct *iibm)
2245 {
2246 vdbg_printk(TPACPI_DBG_INIT, "initializing bay subdriver\n");
2247
2248 IBM_ACPIHANDLE_INIT(bay);
2249 if (bay_handle)
2250 IBM_ACPIHANDLE_INIT(bay_ej);
2251 IBM_ACPIHANDLE_INIT(bay2);
2252 if (bay2_handle)
2253 IBM_ACPIHANDLE_INIT(bay2_ej);
2254
2255 tp_features.bay_status = bay_handle &&
2256 acpi_evalf(bay_handle, NULL, "_STA", "qv");
2257 tp_features.bay_status2 = bay2_handle &&
2258 acpi_evalf(bay2_handle, NULL, "_STA", "qv");
2259
2260 tp_features.bay_eject = bay_handle && bay_ej_handle &&
2261 (strlencmp(bay_ej_path, "_EJ0") == 0 || experimental);
2262 tp_features.bay_eject2 = bay2_handle && bay2_ej_handle &&
2263 (strlencmp(bay2_ej_path, "_EJ0") == 0 || experimental);
2264
2265 vdbg_printk(TPACPI_DBG_INIT,
2266 "bay 1: status %s, eject %s; bay 2: status %s, eject %s\n",
2267 str_supported(tp_features.bay_status),
2268 str_supported(tp_features.bay_eject),
2269 str_supported(tp_features.bay_status2),
2270 str_supported(tp_features.bay_eject2));
2271
2272 return (tp_features.bay_status || tp_features.bay_eject ||
2273 tp_features.bay_status2 || tp_features.bay_eject2)? 0 : 1;
2274 }
2275
2276 static void bay_notify(struct ibm_struct *ibm, u32 event)
2277 {
2278 acpi_bus_generate_event(ibm->acpi->device, event, 0);
2279 }
2280
2281 #define bay_occupied(b) (_sta(b##_handle) & 1)
2282
2283 static int bay_read(char *p)
2284 {
2285 int len = 0;
2286 int occupied = bay_occupied(bay);
2287 int occupied2 = bay_occupied(bay2);
2288 int eject, eject2;
2289
2290 len += sprintf(p + len, "status:\t\t%s\n",
2291 tp_features.bay_status ?
2292 (occupied ? "occupied" : "unoccupied") :
2293 "not supported");
2294 if (tp_features.bay_status2)
2295 len += sprintf(p + len, "status2:\t%s\n", occupied2 ?
2296 "occupied" : "unoccupied");
2297
2298 eject = tp_features.bay_eject && occupied;
2299 eject2 = tp_features.bay_eject2 && occupied2;
2300
2301 if (eject && eject2)
2302 len += sprintf(p + len, "commands:\teject, eject2\n");
2303 else if (eject)
2304 len += sprintf(p + len, "commands:\teject\n");
2305 else if (eject2)
2306 len += sprintf(p + len, "commands:\teject2\n");
2307
2308 return len;
2309 }
2310
2311 static int bay_write(char *buf)
2312 {
2313 char *cmd;
2314
2315 if (!tp_features.bay_eject && !tp_features.bay_eject2)
2316 return -ENODEV;
2317
2318 while ((cmd = next_cmd(&buf))) {
2319 if (tp_features.bay_eject && strlencmp(cmd, "eject") == 0) {
2320 if (!acpi_evalf(bay_ej_handle, NULL, NULL, "vd", 1))
2321 return -EIO;
2322 } else if (tp_features.bay_eject2 &&
2323 strlencmp(cmd, "eject2") == 0) {
2324 if (!acpi_evalf(bay2_ej_handle, NULL, NULL, "vd", 1))
2325 return -EIO;
2326 } else
2327 return -EINVAL;
2328 }
2329
2330 return 0;
2331 }
2332
2333 static struct tp_acpi_drv_struct ibm_bay_acpidriver = {
2334 .notify = bay_notify,
2335 .handle = &bay_handle,
2336 .type = ACPI_SYSTEM_NOTIFY,
2337 };
2338
2339 static struct ibm_struct bay_driver_data = {
2340 .name = "bay",
2341 .read = bay_read,
2342 .write = bay_write,
2343 .acpi = &ibm_bay_acpidriver,
2344 };
2345
2346 #endif /* CONFIG_THINKPAD_ACPI_BAY */
2347
2348 /*************************************************************************
2349 * CMOS subdriver
2350 */
2351
2352 /* sysfs cmos_command -------------------------------------------------- */
2353 static ssize_t cmos_command_store(struct device *dev,
2354 struct device_attribute *attr,
2355 const char *buf, size_t count)
2356 {
2357 unsigned long cmos_cmd;
2358 int res;
2359
2360 if (parse_strtoul(buf, 21, &cmos_cmd))
2361 return -EINVAL;
2362
2363 res = issue_thinkpad_cmos_command(cmos_cmd);
2364 return (res)? res : count;
2365 }
2366
2367 static struct device_attribute dev_attr_cmos_command =
2368 __ATTR(cmos_command, S_IWUSR, NULL, cmos_command_store);
2369
2370 /* --------------------------------------------------------------------- */
2371
2372 static int __init cmos_init(struct ibm_init_struct *iibm)
2373 {
2374 int res;
2375
2376 vdbg_printk(TPACPI_DBG_INIT,
2377 "initializing cmos commands subdriver\n");
2378
2379 IBM_ACPIHANDLE_INIT(cmos);
2380
2381 vdbg_printk(TPACPI_DBG_INIT, "cmos commands are %s\n",
2382 str_supported(cmos_handle != NULL));
2383
2384 res = device_create_file(&tpacpi_pdev->dev, &dev_attr_cmos_command);
2385 if (res)
2386 return res;
2387
2388 return (cmos_handle)? 0 : 1;
2389 }
2390
2391 static void cmos_exit(void)
2392 {
2393 device_remove_file(&tpacpi_pdev->dev, &dev_attr_cmos_command);
2394 }
2395
2396 static int cmos_read(char *p)
2397 {
2398 int len = 0;
2399
2400 /* cmos not supported on 570, 600e/x, 770e, 770x, A21e, A2xm/p,
2401 R30, R31, T20-22, X20-21 */
2402 if (!cmos_handle)
2403 len += sprintf(p + len, "status:\t\tnot supported\n");
2404 else {
2405 len += sprintf(p + len, "status:\t\tsupported\n");
2406 len += sprintf(p + len, "commands:\t<cmd> (<cmd> is 0-21)\n");
2407 }
2408
2409 return len;
2410 }
2411
2412 static int cmos_write(char *buf)
2413 {
2414 char *cmd;
2415 int cmos_cmd, res;
2416
2417 while ((cmd = next_cmd(&buf))) {
2418 if (sscanf(cmd, "%u", &cmos_cmd) == 1 &&
2419 cmos_cmd >= 0 && cmos_cmd <= 21) {
2420 /* cmos_cmd set */
2421 } else
2422 return -EINVAL;
2423
2424 res = issue_thinkpad_cmos_command(cmos_cmd);
2425 if (res)
2426 return res;
2427 }
2428
2429 return 0;
2430 }
2431
2432 static struct ibm_struct cmos_driver_data = {
2433 .name = "cmos",
2434 .read = cmos_read,
2435 .write = cmos_write,
2436 .exit = cmos_exit,
2437 };
2438
2439 /*************************************************************************
2440 * LED subdriver
2441 */
2442
2443 static enum led_access_mode led_supported;
2444
2445 IBM_HANDLE(led, ec, "SLED", /* 570 */
2446 "SYSL", /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20-21 */
2447 "LED", /* all others */
2448 ); /* R30, R31 */
2449
2450 static int __init led_init(struct ibm_init_struct *iibm)
2451 {
2452 vdbg_printk(TPACPI_DBG_INIT, "initializing LED subdriver\n");
2453
2454 IBM_ACPIHANDLE_INIT(led);
2455
2456 if (!led_handle)
2457 /* led not supported on R30, R31 */
2458 led_supported = TPACPI_LED_NONE;
2459 else if (strlencmp(led_path, "SLED") == 0)
2460 /* 570 */
2461 led_supported = TPACPI_LED_570;
2462 else if (strlencmp(led_path, "SYSL") == 0)
2463 /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20-21 */
2464 led_supported = TPACPI_LED_OLD;
2465 else
2466 /* all others */
2467 led_supported = TPACPI_LED_NEW;
2468
2469 vdbg_printk(TPACPI_DBG_INIT, "LED commands are %s, mode %d\n",
2470 str_supported(led_supported), led_supported);
2471
2472 return (led_supported != TPACPI_LED_NONE)? 0 : 1;
2473 }
2474
2475 #define led_status(s) ((s) == 0 ? "off" : ((s) == 1 ? "on" : "blinking"))
2476
2477 static int led_read(char *p)
2478 {
2479 int len = 0;
2480
2481 if (!led_supported) {
2482 len += sprintf(p + len, "status:\t\tnot supported\n");
2483 return len;
2484 }
2485 len += sprintf(p + len, "status:\t\tsupported\n");
2486
2487 if (led_supported == TPACPI_LED_570) {
2488 /* 570 */
2489 int i, status;
2490 for (i = 0; i < 8; i++) {
2491 if (!acpi_evalf(ec_handle,
2492 &status, "GLED", "dd", 1 << i))
2493 return -EIO;
2494 len += sprintf(p + len, "%d:\t\t%s\n",
2495 i, led_status(status));
2496 }
2497 }
2498
2499 len += sprintf(p + len, "commands:\t"
2500 "<led> on, <led> off, <led> blink (<led> is 0-7)\n");
2501
2502 return len;
2503 }
2504
2505 /* off, on, blink */
2506 static const int led_sled_arg1[] = { 0, 1, 3 };
2507 static const int led_exp_hlbl[] = { 0, 0, 1 }; /* led# * */
2508 static const int led_exp_hlcl[] = { 0, 1, 1 }; /* led# * */
2509 static const int led_led_arg1[] = { 0, 0x80, 0xc0 };
2510
2511 static int led_write(char *buf)
2512 {
2513 char *cmd;
2514 int led, ind, ret;
2515
2516 if (!led_supported)
2517 return -ENODEV;
2518
2519 while ((cmd = next_cmd(&buf))) {
2520 if (sscanf(cmd, "%d", &led) != 1 || led < 0 || led > 7)
2521 return -EINVAL;
2522
2523 if (strstr(cmd, "off")) {
2524 ind = 0;
2525 } else if (strstr(cmd, "on")) {
2526 ind = 1;
2527 } else if (strstr(cmd, "blink")) {
2528 ind = 2;
2529 } else
2530 return -EINVAL;
2531
2532 if (led_supported == TPACPI_LED_570) {
2533 /* 570 */
2534 led = 1 << led;
2535 if (!acpi_evalf(led_handle, NULL, NULL, "vdd",
2536 led, led_sled_arg1[ind]))
2537 return -EIO;
2538 } else if (led_supported == TPACPI_LED_OLD) {
2539 /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20 */
2540 led = 1 << led;
2541 ret = ec_write(TPACPI_LED_EC_HLMS, led);
2542 if (ret >= 0)
2543 ret =
2544 ec_write(TPACPI_LED_EC_HLBL,
2545 led * led_exp_hlbl[ind]);
2546 if (ret >= 0)
2547 ret =
2548 ec_write(TPACPI_LED_EC_HLCL,
2549 led * led_exp_hlcl[ind]);
2550 if (ret < 0)
2551 return ret;
2552 } else {
2553 /* all others */
2554 if (!acpi_evalf(led_handle, NULL, NULL, "vdd",
2555 led, led_led_arg1[ind]))
2556 return -EIO;
2557 }
2558 }
2559
2560 return 0;
2561 }
2562
2563 static struct ibm_struct led_driver_data = {
2564 .name = "led",
2565 .read = led_read,
2566 .write = led_write,
2567 };
2568
2569 /*************************************************************************
2570 * Beep subdriver
2571 */
2572
2573 IBM_HANDLE(beep, ec, "BEEP"); /* all except R30, R31 */
2574
2575 static int __init beep_init(struct ibm_init_struct *iibm)
2576 {
2577 vdbg_printk(TPACPI_DBG_INIT, "initializing beep subdriver\n");
2578
2579 IBM_ACPIHANDLE_INIT(beep);
2580
2581 vdbg_printk(TPACPI_DBG_INIT, "beep is %s\n",
2582 str_supported(beep_handle != NULL));
2583
2584 return (beep_handle)? 0 : 1;
2585 }
2586
2587 static int beep_read(char *p)
2588 {
2589 int len = 0;
2590
2591 if (!beep_handle)
2592 len += sprintf(p + len, "status:\t\tnot supported\n");
2593 else {
2594 len += sprintf(p + len, "status:\t\tsupported\n");
2595 len += sprintf(p + len, "commands:\t<cmd> (<cmd> is 0-17)\n");
2596 }
2597
2598 return len;
2599 }
2600
2601 static int beep_write(char *buf)
2602 {
2603 char *cmd;
2604 int beep_cmd;
2605
2606 if (!beep_handle)
2607 return -ENODEV;
2608
2609 while ((cmd = next_cmd(&buf))) {
2610 if (sscanf(cmd, "%u", &beep_cmd) == 1 &&
2611 beep_cmd >= 0 && beep_cmd <= 17) {
2612 /* beep_cmd set */
2613 } else
2614 return -EINVAL;
2615 if (!acpi_evalf(beep_handle, NULL, NULL, "vdd", beep_cmd, 0))
2616 return -EIO;
2617 }
2618
2619 return 0;
2620 }
2621
2622 static struct ibm_struct beep_driver_data = {
2623 .name = "beep",
2624 .read = beep_read,
2625 .write = beep_write,
2626 };
2627
2628 /*************************************************************************
2629 * Thermal subdriver
2630 */
2631
2632 static enum thermal_access_mode thermal_read_mode;
2633
2634 /* sysfs temp##_input -------------------------------------------------- */
2635
2636 static ssize_t thermal_temp_input_show(struct device *dev,
2637 struct device_attribute *attr,
2638 char *buf)
2639 {
2640 struct sensor_device_attribute *sensor_attr =
2641 to_sensor_dev_attr(attr);
2642 int idx = sensor_attr->index;
2643 s32 value;
2644 int res;
2645
2646 res = thermal_get_sensor(idx, &value);
2647 if (res)
2648 return res;
2649 if (value == TP_EC_THERMAL_TMP_NA * 1000)
2650 return -ENXIO;
2651
2652 return snprintf(buf, PAGE_SIZE, "%d\n", value);
2653 }
2654
2655 #define THERMAL_SENSOR_ATTR_TEMP(_idxA, _idxB) \
2656 SENSOR_ATTR(temp##_idxA##_input, S_IRUGO, thermal_temp_input_show, NULL, _idxB)
2657
2658 static struct sensor_device_attribute sensor_dev_attr_thermal_temp_input[] = {
2659 THERMAL_SENSOR_ATTR_TEMP(1, 0),
2660 THERMAL_SENSOR_ATTR_TEMP(2, 1),
2661 THERMAL_SENSOR_ATTR_TEMP(3, 2),
2662 THERMAL_SENSOR_ATTR_TEMP(4, 3),
2663 THERMAL_SENSOR_ATTR_TEMP(5, 4),
2664 THERMAL_SENSOR_ATTR_TEMP(6, 5),
2665 THERMAL_SENSOR_ATTR_TEMP(7, 6),
2666 THERMAL_SENSOR_ATTR_TEMP(8, 7),
2667 THERMAL_SENSOR_ATTR_TEMP(9, 8),
2668 THERMAL_SENSOR_ATTR_TEMP(10, 9),
2669 THERMAL_SENSOR_ATTR_TEMP(11, 10),
2670 THERMAL_SENSOR_ATTR_TEMP(12, 11),
2671 THERMAL_SENSOR_ATTR_TEMP(13, 12),
2672 THERMAL_SENSOR_ATTR_TEMP(14, 13),
2673 THERMAL_SENSOR_ATTR_TEMP(15, 14),
2674 THERMAL_SENSOR_ATTR_TEMP(16, 15),
2675 };
2676
2677 #define THERMAL_ATTRS(X) \
2678 &sensor_dev_attr_thermal_temp_input[X].dev_attr.attr
2679
2680 static struct attribute *thermal_temp_input_attr[] = {
2681 THERMAL_ATTRS(8),
2682 THERMAL_ATTRS(9),
2683 THERMAL_ATTRS(10),
2684 THERMAL_ATTRS(11),
2685 THERMAL_ATTRS(12),
2686 THERMAL_ATTRS(13),
2687 THERMAL_ATTRS(14),
2688 THERMAL_ATTRS(15),
2689 THERMAL_ATTRS(0),
2690 THERMAL_ATTRS(1),
2691 THERMAL_ATTRS(2),
2692 THERMAL_ATTRS(3),
2693 THERMAL_ATTRS(4),
2694 THERMAL_ATTRS(5),
2695 THERMAL_ATTRS(6),
2696 THERMAL_ATTRS(7),
2697 NULL
2698 };
2699
2700 static const struct attribute_group thermal_temp_input16_group = {
2701 .attrs = thermal_temp_input_attr
2702 };
2703
2704 static const struct attribute_group thermal_temp_input8_group = {
2705 .attrs = &thermal_temp_input_attr[8]
2706 };
2707
2708 #undef THERMAL_SENSOR_ATTR_TEMP
2709 #undef THERMAL_ATTRS
2710
2711 /* --------------------------------------------------------------------- */
2712
2713 static int __init thermal_init(struct ibm_init_struct *iibm)
2714 {
2715 u8 t, ta1, ta2;
2716 int i;
2717 int acpi_tmp7;
2718 int res;
2719
2720 vdbg_printk(TPACPI_DBG_INIT, "initializing thermal subdriver\n");
2721
2722 acpi_tmp7 = acpi_evalf(ec_handle, NULL, "TMP7", "qv");
2723
2724 if (thinkpad_id.ec_model) {
2725 /*
2726 * Direct EC access mode: sensors at registers
2727 * 0x78-0x7F, 0xC0-0xC7. Registers return 0x00 for
2728 * non-implemented, thermal sensors return 0x80 when
2729 * not available
2730 */
2731
2732 ta1 = ta2 = 0;
2733 for (i = 0; i < 8; i++) {
2734 if (acpi_ec_read(TP_EC_THERMAL_TMP0 + i, &t)) {
2735 ta1 |= t;
2736 } else {
2737 ta1 = 0;
2738 break;
2739 }
2740 if (acpi_ec_read(TP_EC_THERMAL_TMP8 + i, &t)) {
2741 ta2 |= t;
2742 } else {
2743 ta1 = 0;
2744 break;
2745 }
2746 }
2747 if (ta1 == 0) {
2748 /* This is sheer paranoia, but we handle it anyway */
2749 if (acpi_tmp7) {
2750 printk(IBM_ERR
2751 "ThinkPad ACPI EC access misbehaving, "
2752 "falling back to ACPI TMPx access mode\n");
2753 thermal_read_mode = TPACPI_THERMAL_ACPI_TMP07;
2754 } else {
2755 printk(IBM_ERR
2756 "ThinkPad ACPI EC access misbehaving, "
2757 "disabling thermal sensors access\n");
2758 thermal_read_mode = TPACPI_THERMAL_NONE;
2759 }
2760 } else {
2761 thermal_read_mode =
2762 (ta2 != 0) ?
2763 TPACPI_THERMAL_TPEC_16 : TPACPI_THERMAL_TPEC_8;
2764 }
2765 } else if (acpi_tmp7) {
2766 if (acpi_evalf(ec_handle, NULL, "UPDT", "qv")) {
2767 /* 600e/x, 770e, 770x */
2768 thermal_read_mode = TPACPI_THERMAL_ACPI_UPDT;
2769 } else {
2770 /* Standard ACPI TMPx access, max 8 sensors */
2771 thermal_read_mode = TPACPI_THERMAL_ACPI_TMP07;
2772 }
2773 } else {
2774 /* temperatures not supported on 570, G4x, R30, R31, R32 */
2775 thermal_read_mode = TPACPI_THERMAL_NONE;
2776 }
2777
2778 vdbg_printk(TPACPI_DBG_INIT, "thermal is %s, mode %d\n",
2779 str_supported(thermal_read_mode != TPACPI_THERMAL_NONE),
2780 thermal_read_mode);
2781
2782 switch(thermal_read_mode) {
2783 case TPACPI_THERMAL_TPEC_16:
2784 res = sysfs_create_group(&tpacpi_pdev->dev.kobj,
2785 &thermal_temp_input16_group);
2786 if (res)
2787 return res;
2788 break;
2789 case TPACPI_THERMAL_TPEC_8:
2790 case TPACPI_THERMAL_ACPI_TMP07:
2791 case TPACPI_THERMAL_ACPI_UPDT:
2792 res = sysfs_create_group(&tpacpi_pdev->dev.kobj,
2793 &thermal_temp_input8_group);
2794 if (res)
2795 return res;
2796 break;
2797 case TPACPI_THERMAL_NONE:
2798 default:
2799 return 1;
2800 }
2801
2802 return 0;
2803 }
2804
2805 static void thermal_exit(void)
2806 {
2807 switch(thermal_read_mode) {
2808 case TPACPI_THERMAL_TPEC_16:
2809 sysfs_remove_group(&tpacpi_pdev->dev.kobj,
2810 &thermal_temp_input16_group);
2811 break;
2812 case TPACPI_THERMAL_TPEC_8:
2813 case TPACPI_THERMAL_ACPI_TMP07:
2814 case TPACPI_THERMAL_ACPI_UPDT:
2815 sysfs_remove_group(&tpacpi_pdev->dev.kobj,
2816 &thermal_temp_input16_group);
2817 break;
2818 case TPACPI_THERMAL_NONE:
2819 default:
2820 break;
2821 }
2822 }
2823
2824 /* idx is zero-based */
2825 static int thermal_get_sensor(int idx, s32 *value)
2826 {
2827 int t;
2828 s8 tmp;
2829 char tmpi[5];
2830
2831 t = TP_EC_THERMAL_TMP0;
2832
2833 switch (thermal_read_mode) {
2834 #if TPACPI_MAX_THERMAL_SENSORS >= 16
2835 case TPACPI_THERMAL_TPEC_16:
2836 if (idx >= 8 && idx <= 15) {
2837 t = TP_EC_THERMAL_TMP8;
2838 idx -= 8;
2839 }
2840 /* fallthrough */
2841 #endif
2842 case TPACPI_THERMAL_TPEC_8:
2843 if (idx <= 7) {
2844 if (!acpi_ec_read(t + idx, &tmp))
2845 return -EIO;
2846 *value = tmp * 1000;
2847 return 0;
2848 }
2849 break;
2850
2851 case TPACPI_THERMAL_ACPI_UPDT:
2852 if (idx <= 7) {
2853 snprintf(tmpi, sizeof(tmpi), "TMP%c", '0' + idx);
2854 if (!acpi_evalf(ec_handle, NULL, "UPDT", "v"))
2855 return -EIO;
2856 if (!acpi_evalf(ec_handle, &t, tmpi, "d"))
2857 return -EIO;
2858 *value = (t - 2732) * 100;
2859 return 0;
2860 }
2861 break;
2862
2863 case TPACPI_THERMAL_ACPI_TMP07:
2864 if (idx <= 7) {
2865 snprintf(tmpi, sizeof(tmpi), "TMP%c", '0' + idx);
2866 if (!acpi_evalf(ec_handle, &t, tmpi, "d"))
2867 return -EIO;
2868 if (t > 127 || t < -127)
2869 t = TP_EC_THERMAL_TMP_NA;
2870 *value = t * 1000;
2871 return 0;
2872 }
2873 break;
2874
2875 case TPACPI_THERMAL_NONE:
2876 default:
2877 return -ENOSYS;
2878 }
2879
2880 return -EINVAL;
2881 }
2882
2883 static int thermal_get_sensors(struct ibm_thermal_sensors_struct *s)
2884 {
2885 int res, i;
2886 int n;
2887
2888 n = 8;
2889 i = 0;
2890
2891 if (!s)
2892 return -EINVAL;
2893
2894 if (thermal_read_mode == TPACPI_THERMAL_TPEC_16)
2895 n = 16;
2896
2897 for(i = 0 ; i < n; i++) {
2898 res = thermal_get_sensor(i, &s->temp[i]);
2899 if (res)
2900 return res;
2901 }
2902
2903 return n;
2904 }
2905
2906 static int thermal_read(char *p)
2907 {
2908 int len = 0;
2909 int n, i;
2910 struct ibm_thermal_sensors_struct t;
2911
2912 n = thermal_get_sensors(&t);
2913 if (unlikely(n < 0))
2914 return n;
2915
2916 len += sprintf(p + len, "temperatures:\t");
2917
2918 if (n > 0) {
2919 for (i = 0; i < (n - 1); i++)
2920 len += sprintf(p + len, "%d ", t.temp[i] / 1000);
2921 len += sprintf(p + len, "%d\n", t.temp[i] / 1000);
2922 } else
2923 len += sprintf(p + len, "not supported\n");
2924
2925 return len;
2926 }
2927
2928 static struct ibm_struct thermal_driver_data = {
2929 .name = "thermal",
2930 .read = thermal_read,
2931 .exit = thermal_exit,
2932 };
2933
2934 /*************************************************************************
2935 * EC Dump subdriver
2936 */
2937
2938 static u8 ecdump_regs[256];
2939
2940 static int ecdump_read(char *p)
2941 {
2942 int len = 0;
2943 int i, j;
2944 u8 v;
2945
2946 len += sprintf(p + len, "EC "
2947 " +00 +01 +02 +03 +04 +05 +06 +07"
2948 " +08 +09 +0a +0b +0c +0d +0e +0f\n");
2949 for (i = 0; i < 256; i += 16) {
2950 len += sprintf(p + len, "EC 0x%02x:", i);
2951 for (j = 0; j < 16; j++) {
2952 if (!acpi_ec_read(i + j, &v))
2953 break;
2954 if (v != ecdump_regs[i + j])
2955 len += sprintf(p + len, " *%02x", v);
2956 else
2957 len += sprintf(p + len, " %02x", v);
2958 ecdump_regs[i + j] = v;
2959 }
2960 len += sprintf(p + len, "\n");
2961 if (j != 16)
2962 break;
2963 }
2964
2965 /* These are way too dangerous to advertise openly... */
2966 #if 0
2967 len += sprintf(p + len, "commands:\t0x<offset> 0x<value>"
2968 " (<offset> is 00-ff, <value> is 00-ff)\n");
2969 len += sprintf(p + len, "commands:\t0x<offset> <value> "
2970 " (<offset> is 00-ff, <value> is 0-255)\n");
2971 #endif
2972 return len;
2973 }
2974
2975 static int ecdump_write(char *buf)
2976 {
2977 char *cmd;
2978 int i, v;
2979
2980 while ((cmd = next_cmd(&buf))) {
2981 if (sscanf(cmd, "0x%x 0x%x", &i, &v) == 2) {
2982 /* i and v set */
2983 } else if (sscanf(cmd, "0x%x %u", &i, &v) == 2) {
2984 /* i and v set */
2985 } else
2986 return -EINVAL;
2987 if (i >= 0 && i < 256 && v >= 0 && v < 256) {
2988 if (!acpi_ec_write(i, v))
2989 return -EIO;
2990 } else
2991 return -EINVAL;
2992 }
2993
2994 return 0;
2995 }
2996
2997 static struct ibm_struct ecdump_driver_data = {
2998 .name = "ecdump",
2999 .read = ecdump_read,
3000 .write = ecdump_write,
3001 .flags.experimental = 1,
3002 };
3003
3004 /*************************************************************************
3005 * Backlight/brightness subdriver
3006 */
3007
3008 static struct backlight_device *ibm_backlight_device;
3009
3010 static struct backlight_ops ibm_backlight_data = {
3011 .get_brightness = brightness_get,
3012 .update_status = brightness_update_status,
3013 };
3014
3015 static struct mutex brightness_mutex;
3016
3017 static int __init brightness_init(struct ibm_init_struct *iibm)
3018 {
3019 int b;
3020
3021 vdbg_printk(TPACPI_DBG_INIT, "initializing brightness subdriver\n");
3022
3023 mutex_init(&brightness_mutex);
3024
3025 if (!brightness_mode) {
3026 if (thinkpad_id.vendor == PCI_VENDOR_ID_LENOVO)
3027 brightness_mode = 2;
3028 else
3029 brightness_mode = 3;
3030
3031 dbg_printk(TPACPI_DBG_INIT, "selected brightness_mode=%d\n",
3032 brightness_mode);
3033 }
3034
3035 if (brightness_mode > 3)
3036 return -EINVAL;
3037
3038 b = brightness_get(NULL);
3039 if (b < 0)
3040 return 1;
3041
3042 ibm_backlight_device = backlight_device_register(
3043 TPACPI_BACKLIGHT_DEV_NAME, NULL, NULL,
3044 &ibm_backlight_data);
3045 if (IS_ERR(ibm_backlight_device)) {
3046 printk(IBM_ERR "Could not register backlight device\n");
3047 return PTR_ERR(ibm_backlight_device);
3048 }
3049 vdbg_printk(TPACPI_DBG_INIT, "brightness is supported\n");
3050
3051 ibm_backlight_device->props.max_brightness = 7;
3052 ibm_backlight_device->props.brightness = b;
3053 backlight_update_status(ibm_backlight_device);
3054
3055 return 0;
3056 }
3057
3058 static void brightness_exit(void)
3059 {
3060 if (ibm_backlight_device) {
3061 vdbg_printk(TPACPI_DBG_EXIT,
3062 "calling backlight_device_unregister()\n");
3063 backlight_device_unregister(ibm_backlight_device);
3064 ibm_backlight_device = NULL;
3065 }
3066 }
3067
3068 static int brightness_update_status(struct backlight_device *bd)
3069 {
3070 return brightness_set(
3071 (bd->props.fb_blank == FB_BLANK_UNBLANK &&
3072 bd->props.power == FB_BLANK_UNBLANK) ?
3073 bd->props.brightness : 0);
3074 }
3075
3076 /*
3077 * ThinkPads can read brightness from two places: EC 0x31, or
3078 * CMOS NVRAM byte 0x5E, bits 0-3.
3079 */
3080 static int brightness_get(struct backlight_device *bd)
3081 {
3082 u8 lec = 0, lcmos = 0, level = 0;
3083
3084 if (brightness_mode & 1) {
3085 if (!acpi_ec_read(brightness_offset, &lec))
3086 return -EIO;
3087 lec &= 7;
3088 level = lec;
3089 };
3090 if (brightness_mode & 2) {
3091 lcmos = (nvram_read_byte(TP_NVRAM_ADDR_BRIGHTNESS)
3092 & TP_NVRAM_MASK_LEVEL_BRIGHTNESS)
3093 >> TP_NVRAM_POS_LEVEL_BRIGHTNESS;
3094 level = lcmos;
3095 }
3096
3097 if (brightness_mode == 3 && lec != lcmos) {
3098 printk(IBM_ERR
3099 "CMOS NVRAM (%u) and EC (%u) do not agree "
3100 "on display brightness level\n",
3101 (unsigned int) lcmos,
3102 (unsigned int) lec);
3103 return -EIO;
3104 }
3105
3106 return level;
3107 }
3108
3109 static int brightness_set(int value)
3110 {
3111 int cmos_cmd, inc, i, res;
3112 int current_value;
3113
3114 if (value > 7)
3115 return -EINVAL;
3116
3117 res = mutex_lock_interruptible(&brightness_mutex);
3118 if (res < 0)
3119 return res;
3120
3121 current_value = brightness_get(NULL);
3122 if (current_value < 0) {
3123 res = current_value;
3124 goto errout;
3125 }
3126
3127 cmos_cmd = value > current_value ?
3128 TP_CMOS_BRIGHTNESS_UP :
3129 TP_CMOS_BRIGHTNESS_DOWN;
3130 inc = value > current_value ? 1 : -1;
3131
3132 res = 0;
3133 for (i = current_value; i != value; i += inc) {
3134 if ((brightness_mode & 2) &&
3135 issue_thinkpad_cmos_command(cmos_cmd)) {
3136 res = -EIO;
3137 goto errout;
3138 }
3139 if ((brightness_mode & 1) &&
3140 !acpi_ec_write(brightness_offset, i + inc)) {
3141 res = -EIO;
3142 goto errout;;
3143 }
3144 }
3145
3146 errout:
3147 mutex_unlock(&brightness_mutex);
3148 return res;
3149 }
3150
3151 static int brightness_read(char *p)
3152 {
3153 int len = 0;
3154 int level;
3155
3156 if ((level = brightness_get(NULL)) < 0) {
3157 len += sprintf(p + len, "level:\t\tunreadable\n");
3158 } else {
3159 len += sprintf(p + len, "level:\t\t%d\n", level & 0x7);
3160 len += sprintf(p + len, "commands:\tup, down\n");
3161 len += sprintf(p + len, "commands:\tlevel <level>"
3162 " (<level> is 0-7)\n");
3163 }
3164
3165 return len;
3166 }
3167
3168 static int brightness_write(char *buf)
3169 {
3170 int level;
3171 int new_level;
3172 char *cmd;
3173
3174 while ((cmd = next_cmd(&buf))) {
3175 if ((level = brightness_get(NULL)) < 0)
3176 return level;
3177 level &= 7;
3178
3179 if (strlencmp(cmd, "up") == 0) {
3180 new_level = level == 7 ? 7 : level + 1;
3181 } else if (strlencmp(cmd, "down") == 0) {
3182 new_level = level == 0 ? 0 : level - 1;
3183 } else if (sscanf(cmd, "level %d", &new_level) == 1 &&
3184 new_level >= 0 && new_level <= 7) {
3185 /* new_level set */
3186 } else
3187 return -EINVAL;
3188
3189 brightness_set(new_level);
3190 }
3191
3192 return 0;
3193 }
3194
3195 static struct ibm_struct brightness_driver_data = {
3196 .name = "brightness",
3197 .read = brightness_read,
3198 .write = brightness_write,
3199 .exit = brightness_exit,
3200 };
3201
3202 /*************************************************************************
3203 * Volume subdriver
3204 */
3205
3206 static int volume_read(char *p)
3207 {
3208 int len = 0;
3209 u8 level;
3210
3211 if (!acpi_ec_read(volume_offset, &level)) {
3212 len += sprintf(p + len, "level:\t\tunreadable\n");
3213 } else {
3214 len += sprintf(p + len, "level:\t\t%d\n", level & 0xf);
3215 len += sprintf(p + len, "mute:\t\t%s\n", onoff(level, 6));
3216 len += sprintf(p + len, "commands:\tup, down, mute\n");
3217 len += sprintf(p + len, "commands:\tlevel <level>"
3218 " (<level> is 0-15)\n");
3219 }
3220
3221 return len;
3222 }
3223
3224 static int volume_write(char *buf)
3225 {
3226 int cmos_cmd, inc, i;
3227 u8 level, mute;
3228 int new_level, new_mute;
3229 char *cmd;
3230
3231 while ((cmd = next_cmd(&buf))) {
3232 if (!acpi_ec_read(volume_offset, &level))
3233 return -EIO;
3234 new_mute = mute = level & 0x40;
3235 new_level = level = level & 0xf;
3236
3237 if (strlencmp(cmd, "up") == 0) {
3238 if (mute)
3239 new_mute = 0;
3240 else
3241 new_level = level == 15 ? 15 : level + 1;
3242 } else if (strlencmp(cmd, "down") == 0) {
3243 if (mute)
3244 new_mute = 0;
3245 else
3246 new_level = level == 0 ? 0 : level - 1;
3247 } else if (sscanf(cmd, "level %d", &new_level) == 1 &&
3248 new_level >= 0 && new_level <= 15) {
3249 /* new_level set */
3250 } else if (strlencmp(cmd, "mute") == 0) {
3251 new_mute = 0x40;
3252 } else
3253 return -EINVAL;
3254
3255 if (new_level != level) { /* mute doesn't change */
3256 cmos_cmd = new_level > level ? TP_CMOS_VOLUME_UP : TP_CMOS_VOLUME_DOWN;
3257 inc = new_level > level ? 1 : -1;
3258
3259 if (mute && (issue_thinkpad_cmos_command(cmos_cmd) ||
3260 !acpi_ec_write(volume_offset, level)))
3261 return -EIO;
3262
3263 for (i = level; i != new_level; i += inc)
3264 if (issue_thinkpad_cmos_command(cmos_cmd) ||
3265 !acpi_ec_write(volume_offset, i + inc))
3266 return -EIO;
3267
3268 if (mute && (issue_thinkpad_cmos_command(TP_CMOS_VOLUME_MUTE) ||
3269 !acpi_ec_write(volume_offset,
3270 new_level + mute)))
3271 return -EIO;
3272 }
3273
3274 if (new_mute != mute) { /* level doesn't change */
3275 cmos_cmd = new_mute ? TP_CMOS_VOLUME_MUTE : TP_CMOS_VOLUME_UP;
3276
3277 if (issue_thinkpad_cmos_command(cmos_cmd) ||
3278 !acpi_ec_write(volume_offset, level + new_mute))
3279 return -EIO;
3280 }
3281 }
3282
3283 return 0;
3284 }
3285
3286 static struct ibm_struct volume_driver_data = {
3287 .name = "volume",
3288 .read = volume_read,
3289 .write = volume_write,
3290 };
3291
3292 /*************************************************************************
3293 * Fan subdriver
3294 */
3295
3296 /*
3297 * FAN ACCESS MODES
3298 *
3299 * TPACPI_FAN_RD_ACPI_GFAN:
3300 * ACPI GFAN method: returns fan level
3301 *
3302 * see TPACPI_FAN_WR_ACPI_SFAN
3303 * EC 0x2f (HFSP) not available if GFAN exists
3304 *
3305 * TPACPI_FAN_WR_ACPI_SFAN:
3306 * ACPI SFAN method: sets fan level, 0 (stop) to 7 (max)
3307 *
3308 * EC 0x2f (HFSP) might be available *for reading*, but do not use
3309 * it for writing.
3310 *
3311 * TPACPI_FAN_WR_TPEC:
3312 * ThinkPad EC register 0x2f (HFSP): fan control loop mode
3313 * Supported on almost all ThinkPads
3314 *
3315 * Fan speed changes of any sort (including those caused by the
3316 * disengaged mode) are usually done slowly by the firmware as the
3317 * maximum ammount of fan duty cycle change per second seems to be
3318 * limited.
3319 *
3320 * Reading is not available if GFAN exists.
3321 * Writing is not available if SFAN exists.
3322 *
3323 * Bits
3324 * 7 automatic mode engaged;
3325 * (default operation mode of the ThinkPad)
3326 * fan level is ignored in this mode.
3327 * 6 full speed mode (takes precedence over bit 7);
3328 * not available on all thinkpads. May disable
3329 * the tachometer while the fan controller ramps up
3330 * the speed (which can take up to a few *minutes*).
3331 * Speeds up fan to 100% duty-cycle, which is far above
3332 * the standard RPM levels. It is not impossible that
3333 * it could cause hardware damage.
3334 * 5-3 unused in some models. Extra bits for fan level
3335 * in others, but still useless as all values above
3336 * 7 map to the same speed as level 7 in these models.
3337 * 2-0 fan level (0..7 usually)
3338 * 0x00 = stop
3339 * 0x07 = max (set when temperatures critical)
3340 * Some ThinkPads may have other levels, see
3341 * TPACPI_FAN_WR_ACPI_FANS (X31/X40/X41)
3342 *
3343 * FIRMWARE BUG: on some models, EC 0x2f might not be initialized at
3344 * boot. Apparently the EC does not intialize it, so unless ACPI DSDT
3345 * does so, its initial value is meaningless (0x07).
3346 *
3347 * For firmware bugs, refer to:
3348 * http://thinkwiki.org/wiki/Embedded_Controller_Firmware#Firmware_Issues
3349 *
3350 * ----
3351 *
3352 * ThinkPad EC register 0x84 (LSB), 0x85 (MSB):
3353 * Main fan tachometer reading (in RPM)
3354 *
3355 * This register is present on all ThinkPads with a new-style EC, and
3356 * it is known not to be present on the A21m/e, and T22, as there is
3357 * something else in offset 0x84 according to the ACPI DSDT. Other
3358 * ThinkPads from this same time period (and earlier) probably lack the
3359 * tachometer as well.
3360 *
3361 * Unfortunately a lot of ThinkPads with new-style ECs but whose firwmare
3362 * was never fixed by IBM to report the EC firmware version string
3363 * probably support the tachometer (like the early X models), so
3364 * detecting it is quite hard. We need more data to know for sure.
3365 *
3366 * FIRMWARE BUG: always read 0x84 first, otherwise incorrect readings
3367 * might result.
3368 *
3369 * FIRMWARE BUG: may go stale while the EC is switching to full speed
3370 * mode.
3371 *
3372 * For firmware bugs, refer to:
3373 * http://thinkwiki.org/wiki/Embedded_Controller_Firmware#Firmware_Issues
3374 *
3375 * TPACPI_FAN_WR_ACPI_FANS:
3376 * ThinkPad X31, X40, X41. Not available in the X60.
3377 *
3378 * FANS ACPI handle: takes three arguments: low speed, medium speed,
3379 * high speed. ACPI DSDT seems to map these three speeds to levels
3380 * as follows: STOP LOW LOW MED MED HIGH HIGH HIGH HIGH
3381 * (this map is stored on FAN0..FAN8 as "0,1,1,2,2,3,3,3,3")
3382 *
3383 * The speeds are stored on handles
3384 * (FANA:FAN9), (FANC:FANB), (FANE:FAND).
3385 *
3386 * There are three default speed sets, acessible as handles:
3387 * FS1L,FS1M,FS1H; FS2L,FS2M,FS2H; FS3L,FS3M,FS3H
3388 *
3389 * ACPI DSDT switches which set is in use depending on various
3390 * factors.
3391 *
3392 * TPACPI_FAN_WR_TPEC is also available and should be used to
3393 * command the fan. The X31/X40/X41 seems to have 8 fan levels,
3394 * but the ACPI tables just mention level 7.
3395 */
3396
3397 static enum fan_status_access_mode fan_status_access_mode;
3398 static enum fan_control_access_mode fan_control_access_mode;
3399 static enum fan_control_commands fan_control_commands;
3400
3401 static u8 fan_control_initial_status;
3402 static u8 fan_control_desired_level;
3403
3404 static void fan_watchdog_fire(struct work_struct *ignored);
3405 static int fan_watchdog_maxinterval;
3406 static DECLARE_DELAYED_WORK(fan_watchdog_task, fan_watchdog_fire);
3407
3408 IBM_HANDLE(fans, ec, "FANS"); /* X31, X40, X41 */
3409 IBM_HANDLE(gfan, ec, "GFAN", /* 570 */
3410 "\\FSPD", /* 600e/x, 770e, 770x */
3411 ); /* all others */
3412 IBM_HANDLE(sfan, ec, "SFAN", /* 570 */
3413 "JFNS", /* 770x-JL */
3414 ); /* all others */
3415
3416 /*
3417 * SYSFS fan layout: hwmon compatible (device)
3418 *
3419 * pwm*_enable:
3420 * 0: "disengaged" mode
3421 * 1: manual mode
3422 * 2: native EC "auto" mode (recommended, hardware default)
3423 *
3424 * pwm*: set speed in manual mode, ignored otherwise.
3425 * 0 is level 0; 255 is level 7. Intermediate points done with linear
3426 * interpolation.
3427 *
3428 * fan*_input: tachometer reading, RPM
3429 *
3430 *
3431 * SYSFS fan layout: extensions
3432 *
3433 * fan_watchdog (driver):
3434 * fan watchdog interval in seconds, 0 disables (default), max 120
3435 */
3436
3437 /* sysfs fan pwm1_enable ----------------------------------------------- */
3438 static ssize_t fan_pwm1_enable_show(struct device *dev,
3439 struct device_attribute *attr,
3440 char *buf)
3441 {
3442 int res, mode;
3443 u8 status;
3444
3445 res = fan_get_status_safe(&status);
3446 if (res)
3447 return res;
3448
3449 if (unlikely(tp_features.fan_ctrl_status_undef)) {
3450 if (status != fan_control_initial_status) {
3451 tp_features.fan_ctrl_status_undef = 0;
3452 } else {
3453 /* Return most likely status. In fact, it
3454 * might be the only possible status */
3455 status = TP_EC_FAN_AUTO;
3456 }
3457 }
3458
3459 if (status & TP_EC_FAN_FULLSPEED) {
3460 mode = 0;
3461 } else if (status & TP_EC_FAN_AUTO) {
3462 mode = 2;
3463 } else
3464 mode = 1;
3465
3466 return snprintf(buf, PAGE_SIZE, "%d\n", mode);
3467 }
3468
3469 static ssize_t fan_pwm1_enable_store(struct device *dev,
3470 struct device_attribute *attr,
3471 const char *buf, size_t count)
3472 {
3473 unsigned long t;
3474 int res, level;
3475
3476 if (parse_strtoul(buf, 2, &t))
3477 return -EINVAL;
3478
3479 switch (t) {
3480 case 0:
3481 level = TP_EC_FAN_FULLSPEED;
3482 break;
3483 case 1:
3484 level = TPACPI_FAN_LAST_LEVEL;
3485 break;
3486 case 2:
3487 level = TP_EC_FAN_AUTO;
3488 break;
3489 case 3:
3490 /* reserved for software-controlled auto mode */
3491 return -ENOSYS;
3492 default:
3493 return -EINVAL;
3494 }
3495
3496 res = fan_set_level_safe(level);
3497 if (res == -ENXIO)
3498 return -EINVAL;
3499 else if (res < 0)
3500 return res;
3501
3502 fan_watchdog_reset();
3503
3504 return count;
3505 }
3506
3507 static struct device_attribute dev_attr_fan_pwm1_enable =
3508 __ATTR(pwm1_enable, S_IWUSR | S_IRUGO,
3509 fan_pwm1_enable_show, fan_pwm1_enable_store);
3510
3511 /* sysfs fan pwm1 ------------------------------------------------------ */
3512 static ssize_t fan_pwm1_show(struct device *dev,
3513 struct device_attribute *attr,
3514 char *buf)
3515 {
3516 int res;
3517 u8 status;
3518
3519 res = fan_get_status_safe(&status);
3520 if (res)
3521 return res;
3522
3523 if (unlikely(tp_features.fan_ctrl_status_undef)) {
3524 if (status != fan_control_initial_status) {
3525 tp_features.fan_ctrl_status_undef = 0;
3526 } else {
3527 status = TP_EC_FAN_AUTO;
3528 }
3529 }
3530
3531 if ((status &
3532 (TP_EC_FAN_AUTO | TP_EC_FAN_FULLSPEED)) != 0)
3533 status = fan_control_desired_level;
3534
3535 if (status > 7)
3536 status = 7;
3537
3538 return snprintf(buf, PAGE_SIZE, "%u\n", (status * 255) / 7);
3539 }
3540
3541 static ssize_t fan_pwm1_store(struct device *dev,
3542 struct device_attribute *attr,
3543 const char *buf, size_t count)
3544 {
3545 unsigned long s;
3546 int rc;
3547 u8 status, newlevel;
3548
3549 if (parse_strtoul(buf, 255, &s))
3550 return -EINVAL;
3551
3552 /* scale down from 0-255 to 0-7 */
3553 newlevel = (s >> 5) & 0x07;
3554
3555 rc = mutex_lock_interruptible(&fan_mutex);
3556 if (rc < 0)
3557 return rc;
3558
3559 rc = fan_get_status(&status);
3560 if (!rc && (status &
3561 (TP_EC_FAN_AUTO | TP_EC_FAN_FULLSPEED)) == 0) {
3562 rc = fan_set_level(newlevel);
3563 if (rc == -ENXIO)
3564 rc = -EINVAL;
3565 else if (!rc) {
3566 fan_update_desired_level(newlevel);
3567 fan_watchdog_reset();
3568 }
3569 }
3570
3571 mutex_unlock(&fan_mutex);
3572 return (rc)? rc : count;
3573 }
3574
3575 static struct device_attribute dev_attr_fan_pwm1 =
3576 __ATTR(pwm1, S_IWUSR | S_IRUGO,
3577 fan_pwm1_show, fan_pwm1_store);
3578
3579 /* sysfs fan fan1_input ------------------------------------------------ */
3580 static ssize_t fan_fan1_input_show(struct device *dev,
3581 struct device_attribute *attr,
3582 char *buf)
3583 {
3584 int res;
3585 unsigned int speed;
3586
3587 res = fan_get_speed(&speed);
3588 if (res < 0)
3589 return res;
3590
3591 return snprintf(buf, PAGE_SIZE, "%u\n", speed);
3592 }
3593
3594 static struct device_attribute dev_attr_fan_fan1_input =
3595 __ATTR(fan1_input, S_IRUGO,
3596 fan_fan1_input_show, NULL);
3597
3598 /* sysfs fan fan_watchdog (driver) ------------------------------------- */
3599 static ssize_t fan_fan_watchdog_show(struct device_driver *drv,
3600 char *buf)
3601 {
3602 return snprintf(buf, PAGE_SIZE, "%u\n", fan_watchdog_maxinterval);
3603 }
3604
3605 static ssize_t fan_fan_watchdog_store(struct device_driver *drv,
3606 const char *buf, size_t count)
3607 {
3608 unsigned long t;
3609
3610 if (parse_strtoul(buf, 120, &t))
3611 return -EINVAL;
3612
3613 if (!fan_control_allowed)
3614 return -EPERM;
3615
3616 fan_watchdog_maxinterval = t;
3617 fan_watchdog_reset();
3618
3619 return count;
3620 }
3621
3622 static DRIVER_ATTR(fan_watchdog, S_IWUSR | S_IRUGO,
3623 fan_fan_watchdog_show, fan_fan_watchdog_store);
3624
3625 /* --------------------------------------------------------------------- */
3626 static struct attribute *fan_attributes[] = {
3627 &dev_attr_fan_pwm1_enable.attr, &dev_attr_fan_pwm1.attr,
3628 &dev_attr_fan_fan1_input.attr,
3629 NULL
3630 };
3631
3632 static const struct attribute_group fan_attr_group = {
3633 .attrs = fan_attributes,
3634 };
3635
3636 static int __init fan_init(struct ibm_init_struct *iibm)
3637 {
3638 int rc;
3639
3640 vdbg_printk(TPACPI_DBG_INIT, "initializing fan subdriver\n");
3641
3642 mutex_init(&fan_mutex);
3643 fan_status_access_mode = TPACPI_FAN_NONE;
3644 fan_control_access_mode = TPACPI_FAN_WR_NONE;
3645 fan_control_commands = 0;
3646 fan_watchdog_maxinterval = 0;
3647 tp_features.fan_ctrl_status_undef = 0;
3648 fan_control_desired_level = 7;
3649
3650 IBM_ACPIHANDLE_INIT(fans);
3651 IBM_ACPIHANDLE_INIT(gfan);
3652 IBM_ACPIHANDLE_INIT(sfan);
3653
3654 if (gfan_handle) {
3655 /* 570, 600e/x, 770e, 770x */
3656 fan_status_access_mode = TPACPI_FAN_RD_ACPI_GFAN;
3657 } else {
3658 /* all other ThinkPads: note that even old-style
3659 * ThinkPad ECs supports the fan control register */
3660 if (likely(acpi_ec_read(fan_status_offset,
3661 &fan_control_initial_status))) {
3662 fan_status_access_mode = TPACPI_FAN_RD_TPEC;
3663
3664 /* In some ThinkPads, neither the EC nor the ACPI
3665 * DSDT initialize the fan status, and it ends up
3666 * being set to 0x07 when it *could* be either
3667 * 0x07 or 0x80.
3668 *
3669 * Enable for TP-1Y (T43), TP-78 (R51e),
3670 * TP-76 (R52), TP-70 (T43, R52), which are known
3671 * to be buggy. */
3672 if (fan_control_initial_status == 0x07) {
3673 switch (thinkpad_id.ec_model) {
3674 case 0x5931: /* TP-1Y */
3675 case 0x3837: /* TP-78 */
3676 case 0x3637: /* TP-76 */
3677 case 0x3037: /* TP-70 */
3678 printk(IBM_NOTICE
3679 "fan_init: initial fan status is "
3680 "unknown, assuming it is in auto "
3681 "mode\n");
3682 tp_features.fan_ctrl_status_undef = 1;
3683 ;;
3684 }
3685 }
3686 } else {
3687 printk(IBM_ERR
3688 "ThinkPad ACPI EC access misbehaving, "
3689 "fan status and control unavailable\n");
3690 return 1;
3691 }
3692 }
3693
3694 if (sfan_handle) {
3695 /* 570, 770x-JL */
3696 fan_control_access_mode = TPACPI_FAN_WR_ACPI_SFAN;
3697 fan_control_commands |=
3698 TPACPI_FAN_CMD_LEVEL | TPACPI_FAN_CMD_ENABLE;
3699 } else {
3700 if (!gfan_handle) {
3701 /* gfan without sfan means no fan control */
3702 /* all other models implement TP EC 0x2f control */
3703
3704 if (fans_handle) {
3705 /* X31, X40, X41 */
3706 fan_control_access_mode =
3707 TPACPI_FAN_WR_ACPI_FANS;
3708 fan_control_commands |=
3709 TPACPI_FAN_CMD_SPEED |
3710 TPACPI_FAN_CMD_LEVEL |
3711 TPACPI_FAN_CMD_ENABLE;
3712 } else {
3713 fan_control_access_mode = TPACPI_FAN_WR_TPEC;
3714 fan_control_commands |=
3715 TPACPI_FAN_CMD_LEVEL |
3716 TPACPI_FAN_CMD_ENABLE;
3717 }
3718 }
3719 }
3720
3721 vdbg_printk(TPACPI_DBG_INIT, "fan is %s, modes %d, %d\n",
3722 str_supported(fan_status_access_mode != TPACPI_FAN_NONE ||
3723 fan_control_access_mode != TPACPI_FAN_WR_NONE),
3724 fan_status_access_mode, fan_control_access_mode);
3725
3726 /* fan control master switch */
3727 if (!fan_control_allowed) {
3728 fan_control_access_mode = TPACPI_FAN_WR_NONE;
3729 fan_control_commands = 0;
3730 dbg_printk(TPACPI_DBG_INIT,
3731 "fan control features disabled by parameter\n");
3732 }
3733
3734 /* update fan_control_desired_level */
3735 if (fan_status_access_mode != TPACPI_FAN_NONE)
3736 fan_get_status_safe(NULL);
3737
3738 if (fan_status_access_mode != TPACPI_FAN_NONE ||
3739 fan_control_access_mode != TPACPI_FAN_WR_NONE) {
3740 rc = sysfs_create_group(&tpacpi_pdev->dev.kobj,
3741 &fan_attr_group);
3742 if (!(rc < 0))
3743 rc = driver_create_file(&tpacpi_pdriver.driver,
3744 &driver_attr_fan_watchdog);
3745 if (rc < 0)
3746 return rc;
3747 return 0;
3748 } else
3749 return 1;
3750 }
3751
3752 /*
3753 * Call with fan_mutex held
3754 */
3755 static void fan_update_desired_level(u8 status)
3756 {
3757 if ((status &
3758 (TP_EC_FAN_AUTO | TP_EC_FAN_FULLSPEED)) == 0) {
3759 if (status > 7)
3760 fan_control_desired_level = 7;
3761 else
3762 fan_control_desired_level = status;
3763 }
3764 }
3765
3766 static int fan_get_status(u8 *status)
3767 {
3768 u8 s;
3769
3770 /* TODO:
3771 * Add TPACPI_FAN_RD_ACPI_FANS ? */
3772
3773 switch (fan_status_access_mode) {
3774 case TPACPI_FAN_RD_ACPI_GFAN:
3775 /* 570, 600e/x, 770e, 770x */
3776
3777 if (unlikely(!acpi_evalf(gfan_handle, &s, NULL, "d")))
3778 return -EIO;
3779
3780 if (likely(status))
3781 *status = s & 0x07;
3782
3783 break;
3784
3785 case TPACPI_FAN_RD_TPEC:
3786 /* all except 570, 600e/x, 770e, 770x */
3787 if (unlikely(!acpi_ec_read(fan_status_offset, &s)))
3788 return -EIO;
3789
3790 if (likely(status))
3791 *status = s;
3792
3793 break;
3794
3795 default:
3796 return -ENXIO;
3797 }
3798
3799 return 0;
3800 }
3801
3802 static int fan_get_status_safe(u8 *status)
3803 {
3804 int rc;
3805 u8 s;
3806
3807 rc = mutex_lock_interruptible(&fan_mutex);
3808 if (rc < 0)
3809 return rc;
3810 rc = fan_get_status(&s);
3811 if (!rc)
3812 fan_update_desired_level(s);
3813 mutex_unlock(&fan_mutex);
3814
3815 if (status)
3816 *status = s;
3817
3818 return rc;
3819 }
3820
3821 static void fan_exit(void)
3822 {
3823 vdbg_printk(TPACPI_DBG_EXIT, "cancelling any pending fan watchdog tasks\n");
3824
3825 /* FIXME: can we really do this unconditionally? */
3826 sysfs_remove_group(&tpacpi_pdev->dev.kobj, &fan_attr_group);
3827 driver_remove_file(&tpacpi_pdriver.driver, &driver_attr_fan_watchdog);
3828
3829 cancel_delayed_work(&fan_watchdog_task);
3830 flush_scheduled_work();
3831 }
3832
3833 static int fan_get_speed(unsigned int *speed)
3834 {
3835 u8 hi, lo;
3836
3837 switch (fan_status_access_mode) {
3838 case TPACPI_FAN_RD_TPEC:
3839 /* all except 570, 600e/x, 770e, 770x */
3840 if (unlikely(!acpi_ec_read(fan_rpm_offset, &lo) ||
3841 !acpi_ec_read(fan_rpm_offset + 1, &hi)))
3842 return -EIO;
3843
3844 if (likely(speed))
3845 *speed = (hi << 8) | lo;
3846
3847 break;
3848
3849 default:
3850 return -ENXIO;
3851 }
3852
3853 return 0;
3854 }
3855
3856 static void fan_watchdog_fire(struct work_struct *ignored)
3857 {
3858 int rc;
3859
3860 printk(IBM_NOTICE "fan watchdog: enabling fan\n");
3861 rc = fan_set_enable();
3862 if (rc < 0) {
3863 printk(IBM_ERR "fan watchdog: error %d while enabling fan, "
3864 "will try again later...\n", -rc);
3865 /* reschedule for later */
3866 fan_watchdog_reset();
3867 }
3868 }
3869
3870 static void fan_watchdog_reset(void)
3871 {
3872 static int fan_watchdog_active;
3873
3874 if (fan_control_access_mode == TPACPI_FAN_WR_NONE)
3875 return;
3876
3877 if (fan_watchdog_active)
3878 cancel_delayed_work(&fan_watchdog_task);
3879
3880 if (fan_watchdog_maxinterval > 0) {
3881 fan_watchdog_active = 1;
3882 if (!schedule_delayed_work(&fan_watchdog_task,
3883 msecs_to_jiffies(fan_watchdog_maxinterval
3884 * 1000))) {
3885 printk(IBM_ERR "failed to schedule the fan watchdog, "
3886 "watchdog will not trigger\n");
3887 }
3888 } else
3889 fan_watchdog_active = 0;
3890 }
3891
3892 static int fan_set_level(int level)
3893 {
3894 if (!fan_control_allowed)
3895 return -EPERM;
3896
3897 switch (fan_control_access_mode) {
3898 case TPACPI_FAN_WR_ACPI_SFAN:
3899 if (level >= 0 && level <= 7) {
3900 if (!acpi_evalf(sfan_handle, NULL, NULL, "vd", level))
3901 return -EIO;
3902 } else
3903 return -EINVAL;
3904 break;
3905
3906 case TPACPI_FAN_WR_ACPI_FANS:
3907 case TPACPI_FAN_WR_TPEC:
3908 if ((level != TP_EC_FAN_AUTO) &&
3909 (level != TP_EC_FAN_FULLSPEED) &&
3910 ((level < 0) || (level > 7)))
3911 return -EINVAL;
3912
3913 /* safety net should the EC not support AUTO
3914 * or FULLSPEED mode bits and just ignore them */
3915 if (level & TP_EC_FAN_FULLSPEED)
3916 level |= 7; /* safety min speed 7 */
3917 else if (level & TP_EC_FAN_FULLSPEED)
3918 level |= 4; /* safety min speed 4 */
3919
3920 if (!acpi_ec_write(fan_status_offset, level))
3921 return -EIO;
3922 else
3923 tp_features.fan_ctrl_status_undef = 0;
3924 break;
3925
3926 default:
3927 return -ENXIO;
3928 }
3929 return 0;
3930 }
3931
3932 static int fan_set_level_safe(int level)
3933 {
3934 int rc;
3935
3936 if (!fan_control_allowed)
3937 return -EPERM;
3938
3939 rc = mutex_lock_interruptible(&fan_mutex);
3940 if (rc < 0)
3941 return rc;
3942
3943 if (level == TPACPI_FAN_LAST_LEVEL)
3944 level = fan_control_desired_level;
3945
3946 rc = fan_set_level(level);
3947 if (!rc)
3948 fan_update_desired_level(level);
3949
3950 mutex_unlock(&fan_mutex);
3951 return rc;
3952 }
3953
3954 static int fan_set_enable(void)
3955 {
3956 u8 s;
3957 int rc;
3958
3959 if (!fan_control_allowed)
3960 return -EPERM;
3961
3962 rc = mutex_lock_interruptible(&fan_mutex);
3963 if (rc < 0)
3964 return rc;
3965
3966 switch (fan_control_access_mode) {
3967 case TPACPI_FAN_WR_ACPI_FANS:
3968 case TPACPI_FAN_WR_TPEC:
3969 rc = fan_get_status(&s);
3970 if (rc < 0)
3971 break;
3972
3973 /* Don't go out of emergency fan mode */
3974 if (s != 7) {
3975 s &= 0x07;
3976 s |= TP_EC_FAN_AUTO | 4; /* min fan speed 4 */
3977 }
3978
3979 if (!acpi_ec_write(fan_status_offset, s))
3980 rc = -EIO;
3981 else {
3982 tp_features.fan_ctrl_status_undef = 0;
3983 rc = 0;
3984 }
3985 break;
3986
3987 case TPACPI_FAN_WR_ACPI_SFAN:
3988 rc = fan_get_status(&s);
3989 if (rc < 0)
3990 break;
3991
3992 s &= 0x07;
3993
3994 /* Set fan to at least level 4 */
3995 s |= 4;
3996
3997 if (!acpi_evalf(sfan_handle, NULL, NULL, "vd", s))
3998 rc= -EIO;
3999 else
4000 rc = 0;
4001 break;
4002
4003 default:
4004 rc = -ENXIO;
4005 }
4006
4007 mutex_unlock(&fan_mutex);
4008 return rc;
4009 }
4010
4011 static int fan_set_disable(void)
4012 {
4013 int rc;
4014
4015 if (!fan_control_allowed)
4016 return -EPERM;
4017
4018 rc = mutex_lock_interruptible(&fan_mutex);
4019 if (rc < 0)
4020 return rc;
4021
4022 rc = 0;
4023 switch (fan_control_access_mode) {
4024 case TPACPI_FAN_WR_ACPI_FANS:
4025 case TPACPI_FAN_WR_TPEC:
4026 if (!acpi_ec_write(fan_status_offset, 0x00))
4027 rc = -EIO;
4028 else {
4029 fan_control_desired_level = 0;
4030 tp_features.fan_ctrl_status_undef = 0;
4031 }
4032 break;
4033
4034 case TPACPI_FAN_WR_ACPI_SFAN:
4035 if (!acpi_evalf(sfan_handle, NULL, NULL, "vd", 0x00))
4036 rc = -EIO;
4037 else
4038 fan_control_desired_level = 0;
4039 break;
4040
4041 default:
4042 rc = -ENXIO;
4043 }
4044
4045
4046 mutex_unlock(&fan_mutex);
4047 return rc;
4048 }
4049
4050 static int fan_set_speed(int speed)
4051 {
4052 int rc;
4053
4054 if (!fan_control_allowed)
4055 return -EPERM;
4056
4057 rc = mutex_lock_interruptible(&fan_mutex);
4058 if (rc < 0)
4059 return rc;
4060
4061 rc = 0;
4062 switch (fan_control_access_mode) {
4063 case TPACPI_FAN_WR_ACPI_FANS:
4064 if (speed >= 0 && speed <= 65535) {
4065 if (!acpi_evalf(fans_handle, NULL, NULL, "vddd",
4066 speed, speed, speed))
4067 rc = -EIO;
4068 } else
4069 rc = -EINVAL;
4070 break;
4071
4072 default:
4073 rc = -ENXIO;
4074 }
4075
4076 mutex_unlock(&fan_mutex);
4077 return rc;
4078 }
4079
4080 static int fan_read(char *p)
4081 {
4082 int len = 0;
4083 int rc;
4084 u8 status;
4085 unsigned int speed = 0;
4086
4087 switch (fan_status_access_mode) {
4088 case TPACPI_FAN_RD_ACPI_GFAN:
4089 /* 570, 600e/x, 770e, 770x */
4090 if ((rc = fan_get_status_safe(&status)) < 0)
4091 return rc;
4092
4093 len += sprintf(p + len, "status:\t\t%s\n"
4094 "level:\t\t%d\n",
4095 (status != 0) ? "enabled" : "disabled", status);
4096 break;
4097
4098 case TPACPI_FAN_RD_TPEC:
4099 /* all except 570, 600e/x, 770e, 770x */
4100 if ((rc = fan_get_status_safe(&status)) < 0)
4101 return rc;
4102
4103 if (unlikely(tp_features.fan_ctrl_status_undef)) {
4104 if (status != fan_control_initial_status)
4105 tp_features.fan_ctrl_status_undef = 0;
4106 else
4107 /* Return most likely status. In fact, it
4108 * might be the only possible status */
4109 status = TP_EC_FAN_AUTO;
4110 }
4111
4112 len += sprintf(p + len, "status:\t\t%s\n",
4113 (status != 0) ? "enabled" : "disabled");
4114
4115 if ((rc = fan_get_speed(&speed)) < 0)
4116 return rc;
4117
4118 len += sprintf(p + len, "speed:\t\t%d\n", speed);
4119
4120 if (status & TP_EC_FAN_FULLSPEED)
4121 /* Disengaged mode takes precedence */
4122 len += sprintf(p + len, "level:\t\tdisengaged\n");
4123 else if (status & TP_EC_FAN_AUTO)
4124 len += sprintf(p + len, "level:\t\tauto\n");
4125 else
4126 len += sprintf(p + len, "level:\t\t%d\n", status);
4127 break;
4128
4129 case TPACPI_FAN_NONE:
4130 default:
4131 len += sprintf(p + len, "status:\t\tnot supported\n");
4132 }
4133
4134 if (fan_control_commands & TPACPI_FAN_CMD_LEVEL) {
4135 len += sprintf(p + len, "commands:\tlevel <level>");
4136
4137 switch (fan_control_access_mode) {
4138 case TPACPI_FAN_WR_ACPI_SFAN:
4139 len += sprintf(p + len, " (<level> is 0-7)\n");
4140 break;
4141
4142 default:
4143 len += sprintf(p + len, " (<level> is 0-7, "
4144 "auto, disengaged, full-speed)\n");
4145 break;
4146 }
4147 }
4148
4149 if (fan_control_commands & TPACPI_FAN_CMD_ENABLE)
4150 len += sprintf(p + len, "commands:\tenable, disable\n"
4151 "commands:\twatchdog <timeout> (<timeout> is 0 (off), "
4152 "1-120 (seconds))\n");
4153
4154 if (fan_control_commands & TPACPI_FAN_CMD_SPEED)
4155 len += sprintf(p + len, "commands:\tspeed <speed>"
4156 " (<speed> is 0-65535)\n");
4157
4158 return len;
4159 }
4160
4161 static int fan_write_cmd_level(const char *cmd, int *rc)
4162 {
4163 int level;
4164
4165 if (strlencmp(cmd, "level auto") == 0)
4166 level = TP_EC_FAN_AUTO;
4167 else if ((strlencmp(cmd, "level disengaged") == 0) |
4168 (strlencmp(cmd, "level full-speed") == 0))
4169 level = TP_EC_FAN_FULLSPEED;
4170 else if (sscanf(cmd, "level %d", &level) != 1)
4171 return 0;
4172
4173 if ((*rc = fan_set_level_safe(level)) == -ENXIO)
4174 printk(IBM_ERR "level command accepted for unsupported "
4175 "access mode %d", fan_control_access_mode);
4176
4177 return 1;
4178 }
4179
4180 static int fan_write_cmd_enable(const char *cmd, int *rc)
4181 {
4182 if (strlencmp(cmd, "enable") != 0)
4183 return 0;
4184
4185 if ((*rc = fan_set_enable()) == -ENXIO)
4186 printk(IBM_ERR "enable command accepted for unsupported "
4187 "access mode %d", fan_control_access_mode);
4188
4189 return 1;
4190 }
4191
4192 static int fan_write_cmd_disable(const char *cmd, int *rc)
4193 {
4194 if (strlencmp(cmd, "disable") != 0)
4195 return 0;
4196
4197 if ((*rc = fan_set_disable()) == -ENXIO)
4198 printk(IBM_ERR "disable command accepted for unsupported "
4199 "access mode %d", fan_control_access_mode);
4200
4201 return 1;
4202 }
4203
4204 static int fan_write_cmd_speed(const char *cmd, int *rc)
4205 {
4206 int speed;
4207
4208 /* TODO:
4209 * Support speed <low> <medium> <high> ? */
4210
4211 if (sscanf(cmd, "speed %d", &speed) != 1)
4212 return 0;
4213
4214 if ((*rc = fan_set_speed(speed)) == -ENXIO)
4215 printk(IBM_ERR "speed command accepted for unsupported "
4216 "access mode %d", fan_control_access_mode);
4217
4218 return 1;
4219 }
4220
4221 static int fan_write_cmd_watchdog(const char *cmd, int *rc)
4222 {
4223 int interval;
4224
4225 if (sscanf(cmd, "watchdog %d", &interval) != 1)
4226 return 0;
4227
4228 if (interval < 0 || interval > 120)
4229 *rc = -EINVAL;
4230 else
4231 fan_watchdog_maxinterval = interval;
4232
4233 return 1;
4234 }
4235
4236 static int fan_write(char *buf)
4237 {
4238 char *cmd;
4239 int rc = 0;
4240
4241 while (!rc && (cmd = next_cmd(&buf))) {
4242 if (!((fan_control_commands & TPACPI_FAN_CMD_LEVEL) &&
4243 fan_write_cmd_level(cmd, &rc)) &&
4244 !((fan_control_commands & TPACPI_FAN_CMD_ENABLE) &&
4245 (fan_write_cmd_enable(cmd, &rc) ||
4246 fan_write_cmd_disable(cmd, &rc) ||
4247 fan_write_cmd_watchdog(cmd, &rc))) &&
4248 !((fan_control_commands & TPACPI_FAN_CMD_SPEED) &&
4249 fan_write_cmd_speed(cmd, &rc))
4250 )
4251 rc = -EINVAL;
4252 else if (!rc)
4253 fan_watchdog_reset();
4254 }
4255
4256 return rc;
4257 }
4258
4259 static struct ibm_struct fan_driver_data = {
4260 .name = "fan",
4261 .read = fan_read,
4262 .write = fan_write,
4263 .exit = fan_exit,
4264 };
4265
4266 /****************************************************************************
4267 ****************************************************************************
4268 *
4269 * Infrastructure
4270 *
4271 ****************************************************************************
4272 ****************************************************************************/
4273
4274 /* /proc support */
4275 static struct proc_dir_entry *proc_dir;
4276
4277 /* Subdriver registry */
4278 static LIST_HEAD(tpacpi_all_drivers);
4279
4280
4281 /*
4282 * Module and infrastructure proble, init and exit handling
4283 */
4284
4285 #ifdef CONFIG_THINKPAD_ACPI_DEBUG
4286 static const char * __init str_supported(int is_supported)
4287 {
4288 static char text_unsupported[] __initdata = "not supported";
4289
4290 return (is_supported)? &text_unsupported[4] : &text_unsupported[0];
4291 }
4292 #endif /* CONFIG_THINKPAD_ACPI_DEBUG */
4293
4294 static int __init ibm_init(struct ibm_init_struct *iibm)
4295 {
4296 int ret;
4297 struct ibm_struct *ibm = iibm->data;
4298 struct proc_dir_entry *entry;
4299
4300 BUG_ON(ibm == NULL);
4301
4302 INIT_LIST_HEAD(&ibm->all_drivers);
4303
4304 if (ibm->flags.experimental && !experimental)
4305 return 0;
4306
4307 dbg_printk(TPACPI_DBG_INIT,
4308 "probing for %s\n", ibm->name);
4309
4310 if (iibm->init) {
4311 ret = iibm->init(iibm);
4312 if (ret > 0)
4313 return 0; /* probe failed */
4314 if (ret)
4315 return ret;
4316
4317 ibm->flags.init_called = 1;
4318 }
4319
4320 if (ibm->acpi) {
4321 if (ibm->acpi->hid) {
4322 ret = register_tpacpi_subdriver(ibm);
4323 if (ret)
4324 goto err_out;
4325 }
4326
4327 if (ibm->acpi->notify) {
4328 ret = setup_acpi_notify(ibm);
4329 if (ret == -ENODEV) {
4330 printk(IBM_NOTICE "disabling subdriver %s\n",
4331 ibm->name);
4332 ret = 0;
4333 goto err_out;
4334 }
4335 if (ret < 0)
4336 goto err_out;
4337 }
4338 }
4339
4340 dbg_printk(TPACPI_DBG_INIT,
4341 "%s installed\n", ibm->name);
4342
4343 if (ibm->read) {
4344 entry = create_proc_entry(ibm->name,
4345 S_IFREG | S_IRUGO | S_IWUSR,
4346 proc_dir);
4347 if (!entry) {
4348 printk(IBM_ERR "unable to create proc entry %s\n",
4349 ibm->name);
4350 ret = -ENODEV;
4351 goto err_out;
4352 }
4353 entry->owner = THIS_MODULE;
4354 entry->data = ibm;
4355 entry->read_proc = &dispatch_procfs_read;
4356 if (ibm->write)
4357 entry->write_proc = &dispatch_procfs_write;
4358 ibm->flags.proc_created = 1;
4359 }
4360
4361 list_add_tail(&ibm->all_drivers, &tpacpi_all_drivers);
4362
4363 return 0;
4364
4365 err_out:
4366 dbg_printk(TPACPI_DBG_INIT,
4367 "%s: at error exit path with result %d\n",
4368 ibm->name, ret);
4369
4370 ibm_exit(ibm);
4371 return (ret < 0)? ret : 0;
4372 }
4373
4374 static void ibm_exit(struct ibm_struct *ibm)
4375 {
4376 dbg_printk(TPACPI_DBG_EXIT, "removing %s\n", ibm->name);
4377
4378 list_del_init(&ibm->all_drivers);
4379
4380 if (ibm->flags.acpi_notify_installed) {
4381 dbg_printk(TPACPI_DBG_EXIT,
4382 "%s: acpi_remove_notify_handler\n", ibm->name);
4383 BUG_ON(!ibm->acpi);
4384 acpi_remove_notify_handler(*ibm->acpi->handle,
4385 ibm->acpi->type,
4386 dispatch_acpi_notify);
4387 ibm->flags.acpi_notify_installed = 0;
4388 ibm->flags.acpi_notify_installed = 0;
4389 }
4390
4391 if (ibm->flags.proc_created) {
4392 dbg_printk(TPACPI_DBG_EXIT,
4393 "%s: remove_proc_entry\n", ibm->name);
4394 remove_proc_entry(ibm->name, proc_dir);
4395 ibm->flags.proc_created = 0;
4396 }
4397
4398 if (ibm->flags.acpi_driver_registered) {
4399 dbg_printk(TPACPI_DBG_EXIT,
4400 "%s: acpi_bus_unregister_driver\n", ibm->name);
4401 BUG_ON(!ibm->acpi);
4402 acpi_bus_unregister_driver(ibm->acpi->driver);
4403 kfree(ibm->acpi->driver);
4404 ibm->acpi->driver = NULL;
4405 ibm->flags.acpi_driver_registered = 0;
4406 }
4407
4408 if (ibm->flags.init_called && ibm->exit) {
4409 ibm->exit();
4410 ibm->flags.init_called = 0;
4411 }
4412
4413 dbg_printk(TPACPI_DBG_INIT, "finished removing %s\n", ibm->name);
4414 }
4415
4416 /* Probing */
4417
4418 static void __init get_thinkpad_model_data(struct thinkpad_id_data *tp)
4419 {
4420 struct dmi_device *dev = NULL;
4421 char ec_fw_string[18];
4422
4423 if (!tp)
4424 return;
4425
4426 memset(tp, 0, sizeof(*tp));
4427
4428 if (dmi_name_in_vendors("IBM"))
4429 tp->vendor = PCI_VENDOR_ID_IBM;
4430 else if (dmi_name_in_vendors("LENOVO"))
4431 tp->vendor = PCI_VENDOR_ID_LENOVO;
4432 else
4433 return;
4434
4435 tp->bios_version_str = kstrdup(dmi_get_system_info(DMI_BIOS_VERSION),
4436 GFP_KERNEL);
4437 if (!tp->bios_version_str)
4438 return;
4439 tp->bios_model = tp->bios_version_str[0]
4440 | (tp->bios_version_str[1] << 8);
4441
4442 /*
4443 * ThinkPad T23 or newer, A31 or newer, R50e or newer,
4444 * X32 or newer, all Z series; Some models must have an
4445 * up-to-date BIOS or they will not be detected.
4446 *
4447 * See http://thinkwiki.org/wiki/List_of_DMI_IDs
4448 */
4449 while ((dev = dmi_find_device(DMI_DEV_TYPE_OEM_STRING, NULL, dev))) {
4450 if (sscanf(dev->name,
4451 "IBM ThinkPad Embedded Controller -[%17c",
4452 ec_fw_string) == 1) {
4453 ec_fw_string[sizeof(ec_fw_string) - 1] = 0;
4454 ec_fw_string[strcspn(ec_fw_string, " ]")] = 0;
4455
4456 tp->ec_version_str = kstrdup(ec_fw_string, GFP_KERNEL);
4457 tp->ec_model = ec_fw_string[0]
4458 | (ec_fw_string[1] << 8);
4459 break;
4460 }
4461 }
4462
4463 tp->model_str = kstrdup(dmi_get_system_info(DMI_PRODUCT_VERSION),
4464 GFP_KERNEL);
4465 if (strnicmp(tp->model_str, "ThinkPad", 8) != 0) {
4466 kfree(tp->model_str);
4467 tp->model_str = NULL;
4468 }
4469 }
4470
4471 static int __init probe_for_thinkpad(void)
4472 {
4473 int is_thinkpad;
4474
4475 if (acpi_disabled)
4476 return -ENODEV;
4477
4478 /*
4479 * Non-ancient models have better DMI tagging, but very old models
4480 * don't.
4481 */
4482 is_thinkpad = (thinkpad_id.model_str != NULL);
4483
4484 /* ec is required because many other handles are relative to it */
4485 IBM_ACPIHANDLE_INIT(ec);
4486 if (!ec_handle) {
4487 if (is_thinkpad)
4488 printk(IBM_ERR
4489 "Not yet supported ThinkPad detected!\n");
4490 return -ENODEV;
4491 }
4492
4493 /*
4494 * Risks a regression on very old machines, but reduces potential
4495 * false positives a damn great deal
4496 */
4497 if (!is_thinkpad)
4498 is_thinkpad = (thinkpad_id.vendor == PCI_VENDOR_ID_IBM);
4499
4500 if (!is_thinkpad && !force_load)
4501 return -ENODEV;
4502
4503 return 0;
4504 }
4505
4506
4507 /* Module init, exit, parameters */
4508
4509 static struct ibm_init_struct ibms_init[] __initdata = {
4510 {
4511 .init = thinkpad_acpi_driver_init,
4512 .data = &thinkpad_acpi_driver_data,
4513 },
4514 {
4515 .init = hotkey_init,
4516 .data = &hotkey_driver_data,
4517 },
4518 {
4519 .init = bluetooth_init,
4520 .data = &bluetooth_driver_data,
4521 },
4522 {
4523 .init = wan_init,
4524 .data = &wan_driver_data,
4525 },
4526 {
4527 .init = video_init,
4528 .data = &video_driver_data,
4529 },
4530 {
4531 .init = light_init,
4532 .data = &light_driver_data,
4533 },
4534 #ifdef CONFIG_THINKPAD_ACPI_DOCK
4535 {
4536 .init = dock_init,
4537 .data = &dock_driver_data[0],
4538 },
4539 {
4540 .init = dock_init2,
4541 .data = &dock_driver_data[1],
4542 },
4543 #endif
4544 #ifdef CONFIG_THINKPAD_ACPI_BAY
4545 {
4546 .init = bay_init,
4547 .data = &bay_driver_data,
4548 },
4549 #endif
4550 {
4551 .init = cmos_init,
4552 .data = &cmos_driver_data,
4553 },
4554 {
4555 .init = led_init,
4556 .data = &led_driver_data,
4557 },
4558 {
4559 .init = beep_init,
4560 .data = &beep_driver_data,
4561 },
4562 {
4563 .init = thermal_init,
4564 .data = &thermal_driver_data,
4565 },
4566 {
4567 .data = &ecdump_driver_data,
4568 },
4569 {
4570 .init = brightness_init,
4571 .data = &brightness_driver_data,
4572 },
4573 {
4574 .data = &volume_driver_data,
4575 },
4576 {
4577 .init = fan_init,
4578 .data = &fan_driver_data,
4579 },
4580 };
4581
4582 static int __init set_ibm_param(const char *val, struct kernel_param *kp)
4583 {
4584 unsigned int i;
4585 struct ibm_struct *ibm;
4586
4587 for (i = 0; i < ARRAY_SIZE(ibms_init); i++) {
4588 ibm = ibms_init[i].data;
4589 BUG_ON(ibm == NULL);
4590
4591 if (strcmp(ibm->name, kp->name) == 0 && ibm->write) {
4592 if (strlen(val) > sizeof(ibms_init[i].param) - 2)
4593 return -ENOSPC;
4594 strcpy(ibms_init[i].param, val);
4595 strcat(ibms_init[i].param, ",");
4596 return 0;
4597 }
4598 }
4599
4600 return -EINVAL;
4601 }
4602
4603 static int experimental;
4604 module_param(experimental, int, 0);
4605
4606 static u32 dbg_level;
4607 module_param_named(debug, dbg_level, uint, 0);
4608
4609 static int force_load;
4610 module_param(force_load, bool, 0);
4611
4612 static int fan_control_allowed;
4613 module_param_named(fan_control, fan_control_allowed, bool, 0);
4614
4615 static int brightness_mode;
4616 module_param_named(brightness_mode, brightness_mode, int, 0);
4617
4618 #define IBM_PARAM(feature) \
4619 module_param_call(feature, set_ibm_param, NULL, NULL, 0)
4620
4621 IBM_PARAM(hotkey);
4622 IBM_PARAM(bluetooth);
4623 IBM_PARAM(video);
4624 IBM_PARAM(light);
4625 #ifdef CONFIG_THINKPAD_ACPI_DOCK
4626 IBM_PARAM(dock);
4627 #endif
4628 #ifdef CONFIG_THINKPAD_ACPI_BAY
4629 IBM_PARAM(bay);
4630 #endif /* CONFIG_THINKPAD_ACPI_BAY */
4631 IBM_PARAM(cmos);
4632 IBM_PARAM(led);
4633 IBM_PARAM(beep);
4634 IBM_PARAM(ecdump);
4635 IBM_PARAM(brightness);
4636 IBM_PARAM(volume);
4637 IBM_PARAM(fan);
4638
4639 static int __init thinkpad_acpi_module_init(void)
4640 {
4641 int ret, i;
4642
4643 /* Driver-level probe */
4644
4645 get_thinkpad_model_data(&thinkpad_id);
4646 ret = probe_for_thinkpad();
4647 if (ret) {
4648 thinkpad_acpi_module_exit();
4649 return ret;
4650 }
4651
4652 /* Driver initialization */
4653
4654 IBM_ACPIHANDLE_INIT(ecrd);
4655 IBM_ACPIHANDLE_INIT(ecwr);
4656
4657 proc_dir = proc_mkdir(IBM_PROC_DIR, acpi_root_dir);
4658 if (!proc_dir) {
4659 printk(IBM_ERR "unable to create proc dir " IBM_PROC_DIR);
4660 thinkpad_acpi_module_exit();
4661 return -ENODEV;
4662 }
4663 proc_dir->owner = THIS_MODULE;
4664
4665 ret = platform_driver_register(&tpacpi_pdriver);
4666 if (ret) {
4667 printk(IBM_ERR "unable to register platform driver\n");
4668 thinkpad_acpi_module_exit();
4669 return ret;
4670 }
4671 tp_features.platform_drv_registered = 1;
4672
4673 ret = tpacpi_create_driver_attributes(&tpacpi_pdriver.driver);
4674 if (ret) {
4675 printk(IBM_ERR "unable to create sysfs driver attributes\n");
4676 thinkpad_acpi_module_exit();
4677 return ret;
4678 }
4679 tp_features.platform_drv_attrs_registered = 1;
4680
4681
4682 /* Device initialization */
4683 tpacpi_pdev = platform_device_register_simple(IBM_DRVR_NAME, -1,
4684 NULL, 0);
4685 if (IS_ERR(tpacpi_pdev)) {
4686 ret = PTR_ERR(tpacpi_pdev);
4687 tpacpi_pdev = NULL;
4688 printk(IBM_ERR "unable to register platform device\n");
4689 thinkpad_acpi_module_exit();
4690 return ret;
4691 }
4692 tpacpi_hwmon = hwmon_device_register(&tpacpi_pdev->dev);
4693 if (IS_ERR(tpacpi_hwmon)) {
4694 ret = PTR_ERR(tpacpi_hwmon);
4695 tpacpi_hwmon = NULL;
4696 printk(IBM_ERR "unable to register hwmon device\n");
4697 thinkpad_acpi_module_exit();
4698 return ret;
4699 }
4700 tpacpi_inputdev = input_allocate_device();
4701 if (!tpacpi_inputdev) {
4702 printk(IBM_ERR "unable to allocate input device\n");
4703 thinkpad_acpi_module_exit();
4704 return -ENOMEM;
4705 } else {
4706 /* Prepare input device, but don't register */
4707 tpacpi_inputdev->name = "ThinkPad Extra Buttons";
4708 tpacpi_inputdev->phys = IBM_DRVR_NAME "/input0";
4709 tpacpi_inputdev->id.bustype = BUS_HOST;
4710 tpacpi_inputdev->id.vendor = (thinkpad_id.vendor) ?
4711 thinkpad_id.vendor :
4712 PCI_VENDOR_ID_IBM;
4713 tpacpi_inputdev->id.product = TPACPI_HKEY_INPUT_PRODUCT;
4714 tpacpi_inputdev->id.version = TPACPI_HKEY_INPUT_VERSION;
4715 }
4716 for (i = 0; i < ARRAY_SIZE(ibms_init); i++) {
4717 ret = ibm_init(&ibms_init[i]);
4718 if (ret >= 0 && *ibms_init[i].param)
4719 ret = ibms_init[i].data->write(ibms_init[i].param);
4720 if (ret < 0) {
4721 thinkpad_acpi_module_exit();
4722 return ret;
4723 }
4724 }
4725 ret = input_register_device(tpacpi_inputdev);
4726 if (ret < 0) {
4727 printk(IBM_ERR "unable to register input device\n");
4728 thinkpad_acpi_module_exit();
4729 return ret;
4730 } else {
4731 tp_features.input_device_registered = 1;
4732 }
4733
4734 return 0;
4735 }
4736
4737 static void thinkpad_acpi_module_exit(void)
4738 {
4739 struct ibm_struct *ibm, *itmp;
4740
4741 list_for_each_entry_safe_reverse(ibm, itmp,
4742 &tpacpi_all_drivers,
4743 all_drivers) {
4744 ibm_exit(ibm);
4745 }
4746
4747 dbg_printk(TPACPI_DBG_INIT, "finished subdriver exit path...\n");
4748
4749 if (tpacpi_inputdev) {
4750 if (tp_features.input_device_registered)
4751 input_unregister_device(tpacpi_inputdev);
4752 else
4753 input_free_device(tpacpi_inputdev);
4754 }
4755
4756 if (tpacpi_hwmon)
4757 hwmon_device_unregister(tpacpi_hwmon);
4758
4759 if (tpacpi_pdev)
4760 platform_device_unregister(tpacpi_pdev);
4761
4762 if (tp_features.platform_drv_attrs_registered)
4763 tpacpi_remove_driver_attributes(&tpacpi_pdriver.driver);
4764
4765 if (tp_features.platform_drv_registered)
4766 platform_driver_unregister(&tpacpi_pdriver);
4767
4768 if (proc_dir)
4769 remove_proc_entry(IBM_PROC_DIR, acpi_root_dir);
4770
4771 kfree(thinkpad_id.bios_version_str);
4772 kfree(thinkpad_id.ec_version_str);
4773 kfree(thinkpad_id.model_str);
4774 }
4775
4776 module_init(thinkpad_acpi_module_init);
4777 module_exit(thinkpad_acpi_module_exit);
USB Experimental Work