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[PATCH] Add try_to_freeze() to rt-test kthreads
[linux-2.6/linux-acpi-2.6/ibm-acpi-2.6.git] / drivers / acpi / ibm_acpi.c
blob15fc12482ba0ab723b8121f13b9562e128e9cc32
1 /*
2 * ibm_acpi.c - IBM ThinkPad ACPI Extras
3 *
4 *
5 * Copyright (C) 2004-2005 Borislav Deianov <borislav@users.sf.net>
6 *
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 2 of the License, or
10 * (at your option) any later version.
11 *
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
20 */
21
22 #define IBM_VERSION "0.12a"
23
24 /*
25 * Changelog:
26 *
27 * 2005-08-17 0.12 fix compilation on 2.6.13-rc kernels
28 * 2005-03-17 0.11 support for 600e, 770x
29 * thanks to Jamie Lentin <lentinj@dial.pipex.com>
30 * support for 770e, G41
31 * G40 and G41 don't have a thinklight
32 * temperatures no longer experimental
33 * experimental brightness control
34 * experimental volume control
35 * experimental fan enable/disable
36 * 2005-01-16 0.10 fix module loading on R30, R31
37 * 2005-01-16 0.9 support for 570, R30, R31
38 * ultrabay support on A22p, A3x
39 * limit arg for cmos, led, beep, drop experimental status
40 * more capable led control on A21e, A22p, T20-22, X20
41 * experimental temperatures and fan speed
42 * experimental embedded controller register dump
43 * mark more functions as __init, drop incorrect __exit
44 * use MODULE_VERSION
45 * thanks to Henrik Brix Andersen <brix@gentoo.org>
46 * fix parameter passing on module loading
47 * thanks to Rusty Russell <rusty@rustcorp.com.au>
48 * thanks to Jim Radford <radford@blackbean.org>
49 * 2004-11-08 0.8 fix init error case, don't return from a macro
50 * thanks to Chris Wright <chrisw@osdl.org>
51 * 2004-10-23 0.7 fix module loading on A21e, A22p, T20, T21, X20
52 * fix led control on A21e
53 * 2004-10-19 0.6 use acpi_bus_register_driver() to claim HKEY device
54 * 2004-10-18 0.5 thinklight support on A21e, G40, R32, T20, T21, X20
55 * proc file format changed
56 * video_switch command
57 * experimental cmos control
58 * experimental led control
59 * experimental acpi sounds
60 * 2004-09-16 0.4 support for module parameters
61 * hotkey mask can be prefixed by 0x
62 * video output switching
63 * video expansion control
64 * ultrabay eject support
65 * removed lcd brightness/on/off control, didn't work
66 * 2004-08-17 0.3 support for R40
67 * lcd off, brightness control
68 * thinklight on/off
69 * 2004-08-14 0.2 support for T series, X20
70 * bluetooth enable/disable
71 * hotkey events disabled by default
72 * removed fan control, currently useless
73 * 2004-08-09 0.1 initial release, support for X series
74 */
75
76 #include <linux/kernel.h>
77 #include <linux/module.h>
78 #include <linux/init.h>
79 #include <linux/types.h>
80 #include <linux/proc_fs.h>
81 #include <asm/uaccess.h>
82
83 #include <acpi/acpi_drivers.h>
84 #include <acpi/acnamesp.h>
85
86 #define IBM_NAME "ibm"
87 #define IBM_DESC "IBM ThinkPad ACPI Extras"
88 #define IBM_FILE "ibm_acpi"
89 #define IBM_URL "http://ibm-acpi.sf.net/"
90
91 MODULE_AUTHOR("Borislav Deianov");
92 MODULE_DESCRIPTION(IBM_DESC);
93 MODULE_VERSION(IBM_VERSION);
94 MODULE_LICENSE("GPL");
95
96 #define IBM_DIR IBM_NAME
97
98 #define IBM_LOG IBM_FILE ": "
99 #define IBM_ERR KERN_ERR IBM_LOG
100 #define IBM_NOTICE KERN_NOTICE IBM_LOG
101 #define IBM_INFO KERN_INFO IBM_LOG
102 #define IBM_DEBUG KERN_DEBUG IBM_LOG
103
104 #define IBM_MAX_ACPI_ARGS 3
105
106 #define __unused __attribute__ ((unused))
107
108 static int experimental;
109 module_param(experimental, int, 0);
110
111 static acpi_handle root_handle = NULL;
112
113 #define IBM_HANDLE(object, parent, paths...) \
114 static acpi_handle object##_handle; \
115 static acpi_handle *object##_parent = &parent##_handle; \
116 static char *object##_path; \
117 static char *object##_paths[] = { paths }
118
119 /*
120 * The following models are supported to various degrees:
121 *
122 * 570, 600e, 600x, 770e, 770x
123 * A20m, A21e, A21m, A21p, A22p, A30, A30p, A31, A31p
124 * G40, G41
125 * R30, R31, R32, R40, R40e, R50, R50e, R50p, R51
126 * T20, T21, T22, T23, T30, T40, T40p, T41, T41p, T42, T42p, T43
127 * X20, X21, X22, X23, X24, X30, X31, X40
128 *
129 * The following models have no supported features:
130 *
131 * 240, 240x, i1400
132 *
133 * Still missing DSDTs for the following models:
134 *
135 * A20p, A22e, A22m
136 * R52
137 * S31
138 * T43p
139 */
140
141 IBM_HANDLE(ec, root, "\\_SB.PCI0.ISA.EC0", /* 240, 240x */
142 "\\_SB.PCI.ISA.EC", /* 570 */
143 "\\_SB.PCI0.ISA0.EC0", /* 600e/x, 770e, 770x */
144 "\\_SB.PCI0.ISA.EC", /* A21e, A2xm/p, T20-22, X20-21 */
145 "\\_SB.PCI0.AD4S.EC0", /* i1400, R30 */
146 "\\_SB.PCI0.ICH3.EC0", /* R31 */
147 "\\_SB.PCI0.LPC.EC", /* all others */
148 );
149
150 IBM_HANDLE(vid, root, "\\_SB.PCI.AGP.VGA", /* 570 */
151 "\\_SB.PCI0.AGP0.VID0", /* 600e/x, 770x */
152 "\\_SB.PCI0.VID0", /* 770e */
153 "\\_SB.PCI0.VID", /* A21e, G4x, R50e, X30, X40 */
154 "\\_SB.PCI0.AGP.VID", /* all others */
155 ); /* R30, R31 */
156
157 IBM_HANDLE(vid2, root, "\\_SB.PCI0.AGPB.VID"); /* G41 */
158
159 IBM_HANDLE(cmos, root, "\\UCMS", /* R50, R50e, R50p, R51, T4x, X31, X40 */
160 "\\CMOS", /* A3x, G4x, R32, T23, T30, X22-24, X30 */
161 "\\CMS", /* R40, R40e */
162 ); /* all others */
163 #ifdef CONFIG_ACPI_IBM_DOCK
164 IBM_HANDLE(dock, root, "\\_SB.GDCK", /* X30, X31, X40 */
165 "\\_SB.PCI0.DOCK", /* 600e/x,770e,770x,A2xm/p,T20-22,X20-21 */
166 "\\_SB.PCI0.PCI1.DOCK", /* all others */
167 "\\_SB.PCI.ISA.SLCE", /* 570 */
168 ); /* A21e,G4x,R30,R31,R32,R40,R40e,R50e */
169 #endif
170 IBM_HANDLE(bay, root, "\\_SB.PCI.IDE.SECN.MAST", /* 570 */
171 "\\_SB.PCI0.IDE0.IDES.IDSM", /* 600e/x, 770e, 770x */
172 "\\_SB.PCI0.IDE0.SCND.MSTR", /* all others */
173 ); /* A21e, R30, R31 */
174
175 IBM_HANDLE(bay_ej, bay, "_EJ3", /* 600e/x, A2xm/p, A3x */
176 "_EJ0", /* all others */
177 ); /* 570,A21e,G4x,R30,R31,R32,R40e,R50e */
178
179 IBM_HANDLE(bay2, root, "\\_SB.PCI0.IDE0.PRIM.SLAV", /* A3x, R32 */
180 "\\_SB.PCI0.IDE0.IDEP.IDPS", /* 600e/x, 770e, 770x */
181 ); /* all others */
182
183 IBM_HANDLE(bay2_ej, bay2, "_EJ3", /* 600e/x, 770e, A3x */
184 "_EJ0", /* 770x */
185 ); /* all others */
186
187 /* don't list other alternatives as we install a notify handler on the 570 */
188 IBM_HANDLE(pci, root, "\\_SB.PCI"); /* 570 */
189
190 IBM_HANDLE(hkey, ec, "\\_SB.HKEY", /* 600e/x, 770e, 770x */
191 "^HKEY", /* R30, R31 */
192 "HKEY", /* all others */
193 ); /* 570 */
194
195 IBM_HANDLE(lght, root, "\\LGHT"); /* A21e, A2xm/p, T20-22, X20-21 */
196 IBM_HANDLE(ledb, ec, "LEDB"); /* G4x */
197
198 IBM_HANDLE(led, ec, "SLED", /* 570 */
199 "SYSL", /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20-21 */
200 "LED", /* all others */
201 ); /* R30, R31 */
202
203 IBM_HANDLE(beep, ec, "BEEP"); /* all except R30, R31 */
204 IBM_HANDLE(ecrd, ec, "ECRD"); /* 570 */
205 IBM_HANDLE(ecwr, ec, "ECWR"); /* 570 */
206 IBM_HANDLE(fans, ec, "FANS"); /* X31, X40 */
207
208 IBM_HANDLE(gfan, ec, "GFAN", /* 570 */
209 "\\FSPD", /* 600e/x, 770e, 770x */
210 ); /* all others */
211
212 IBM_HANDLE(sfan, ec, "SFAN", /* 570 */
213 "JFNS", /* 770x-JL */
214 ); /* all others */
215
216 #define IBM_HKEY_HID "IBM0068"
217 #define IBM_PCI_HID "PNP0A03"
218
219 struct ibm_struct {
220 char *name;
221 char param[32];
222
223 char *hid;
224 struct acpi_driver *driver;
225
226 int (*init) (void);
227 int (*read) (char *);
228 int (*write) (char *);
229 void (*exit) (void);
230
231 void (*notify) (struct ibm_struct *, u32);
232 acpi_handle *handle;
233 int type;
234 struct acpi_device *device;
235
236 int driver_registered;
237 int proc_created;
238 int init_called;
239 int notify_installed;
240
241 int experimental;
242 };
243
244 static struct proc_dir_entry *proc_dir = NULL;
245
246 #define onoff(status,bit) ((status) & (1 << (bit)) ? "on" : "off")
247 #define enabled(status,bit) ((status) & (1 << (bit)) ? "enabled" : "disabled")
248 #define strlencmp(a,b) (strncmp((a), (b), strlen(b)))
249
250 static int acpi_evalf(acpi_handle handle,
251 void *res, char *method, char *fmt, ...)
252 {
253 char *fmt0 = fmt;
254 struct acpi_object_list params;
255 union acpi_object in_objs[IBM_MAX_ACPI_ARGS];
256 struct acpi_buffer result, *resultp;
257 union acpi_object out_obj;
258 acpi_status status;
259 va_list ap;
260 char res_type;
261 int success;
262 int quiet;
263
264 if (!*fmt) {
265 printk(IBM_ERR "acpi_evalf() called with empty format\n");
266 return 0;
267 }
268
269 if (*fmt == 'q') {
270 quiet = 1;
271 fmt++;
272 } else
273 quiet = 0;
274
275 res_type = *(fmt++);
276
277 params.count = 0;
278 params.pointer = &in_objs[0];
279
280 va_start(ap, fmt);
281 while (*fmt) {
282 char c = *(fmt++);
283 switch (c) {
284 case 'd': /* int */
285 in_objs[params.count].integer.value = va_arg(ap, int);
286 in_objs[params.count++].type = ACPI_TYPE_INTEGER;
287 break;
288 /* add more types as needed */
289 default:
290 printk(IBM_ERR "acpi_evalf() called "
291 "with invalid format character '%c'\n", c);
292 return 0;
293 }
294 }
295 va_end(ap);
296
297 if (res_type != 'v') {
298 result.length = sizeof(out_obj);
299 result.pointer = &out_obj;
300 resultp = &result;
301 } else
302 resultp = NULL;
303
304 status = acpi_evaluate_object(handle, method, &params, resultp);
305
306 switch (res_type) {
307 case 'd': /* int */
308 if (res)
309 *(int *)res = out_obj.integer.value;
310 success = status == AE_OK && out_obj.type == ACPI_TYPE_INTEGER;
311 break;
312 case 'v': /* void */
313 success = status == AE_OK;
314 break;
315 /* add more types as needed */
316 default:
317 printk(IBM_ERR "acpi_evalf() called "
318 "with invalid format character '%c'\n", res_type);
319 return 0;
320 }
321
322 if (!success && !quiet)
323 printk(IBM_ERR "acpi_evalf(%s, %s, ...) failed: %d\n",
324 method, fmt0, status);
325
326 return success;
327 }
328
329 static void __unused acpi_print_int(acpi_handle handle, char *method)
330 {
331 int i;
332
333 if (acpi_evalf(handle, &i, method, "d"))
334 printk(IBM_INFO "%s = 0x%x\n", method, i);
335 else
336 printk(IBM_ERR "error calling %s\n", method);
337 }
338
339 static char *next_cmd(char **cmds)
340 {
341 char *start = *cmds;
342 char *end;
343
344 while ((end = strchr(start, ',')) && end == start)
345 start = end + 1;
346
347 if (!end)
348 return NULL;
349
350 *end = 0;
351 *cmds = end + 1;
352 return start;
353 }
354
355 static int driver_init(void)
356 {
357 printk(IBM_INFO "%s v%s\n", IBM_DESC, IBM_VERSION);
358 printk(IBM_INFO "%s\n", IBM_URL);
359
360 return 0;
361 }
362
363 static int driver_read(char *p)
364 {
365 int len = 0;
366
367 len += sprintf(p + len, "driver:\t\t%s\n", IBM_DESC);
368 len += sprintf(p + len, "version:\t%s\n", IBM_VERSION);
369
370 return len;
371 }
372
373 static int hotkey_supported;
374 static int hotkey_mask_supported;
375 static int hotkey_orig_status;
376 static int hotkey_orig_mask;
377
378 static int hotkey_get(int *status, int *mask)
379 {
380 if (!acpi_evalf(hkey_handle, status, "DHKC", "d"))
381 return 0;
382
383 if (hotkey_mask_supported)
384 if (!acpi_evalf(hkey_handle, mask, "DHKN", "d"))
385 return 0;
386
387 return 1;
388 }
389
390 static int hotkey_set(int status, int mask)
391 {
392 int i;
393
394 if (!acpi_evalf(hkey_handle, NULL, "MHKC", "vd", status))
395 return 0;
396
397 if (hotkey_mask_supported)
398 for (i = 0; i < 32; i++) {
399 int bit = ((1 << i) & mask) != 0;
400 if (!acpi_evalf(hkey_handle,
401 NULL, "MHKM", "vdd", i + 1, bit))
402 return 0;
403 }
404
405 return 1;
406 }
407
408 static int hotkey_init(void)
409 {
410 /* hotkey not supported on 570 */
411 hotkey_supported = hkey_handle != NULL;
412
413 if (hotkey_supported) {
414 /* mask not supported on 570, 600e/x, 770e, 770x, A21e, A2xm/p,
415 A30, R30, R31, T20-22, X20-21, X22-24 */
416 hotkey_mask_supported =
417 acpi_evalf(hkey_handle, NULL, "DHKN", "qv");
418
419 if (!hotkey_get(&hotkey_orig_status, &hotkey_orig_mask))
420 return -ENODEV;
421 }
422
423 return 0;
424 }
425
426 static int hotkey_read(char *p)
427 {
428 int status, mask;
429 int len = 0;
430
431 if (!hotkey_supported) {
432 len += sprintf(p + len, "status:\t\tnot supported\n");
433 return len;
434 }
435
436 if (!hotkey_get(&status, &mask))
437 return -EIO;
438
439 len += sprintf(p + len, "status:\t\t%s\n", enabled(status, 0));
440 if (hotkey_mask_supported) {
441 len += sprintf(p + len, "mask:\t\t0x%04x\n", mask);
442 len += sprintf(p + len,
443 "commands:\tenable, disable, reset, <mask>\n");
444 } else {
445 len += sprintf(p + len, "mask:\t\tnot supported\n");
446 len += sprintf(p + len, "commands:\tenable, disable, reset\n");
447 }
448
449 return len;
450 }
451
452 static int hotkey_write(char *buf)
453 {
454 int status, mask;
455 char *cmd;
456 int do_cmd = 0;
457
458 if (!hotkey_supported)
459 return -ENODEV;
460
461 if (!hotkey_get(&status, &mask))
462 return -EIO;
463
464 while ((cmd = next_cmd(&buf))) {
465 if (strlencmp(cmd, "enable") == 0) {
466 status = 1;
467 } else if (strlencmp(cmd, "disable") == 0) {
468 status = 0;
469 } else if (strlencmp(cmd, "reset") == 0) {
470 status = hotkey_orig_status;
471 mask = hotkey_orig_mask;
472 } else if (sscanf(cmd, "0x%x", &mask) == 1) {
473 /* mask set */
474 } else if (sscanf(cmd, "%x", &mask) == 1) {
475 /* mask set */
476 } else
477 return -EINVAL;
478 do_cmd = 1;
479 }
480
481 if (do_cmd && !hotkey_set(status, mask))
482 return -EIO;
483
484 return 0;
485 }
486
487 static void hotkey_exit(void)
488 {
489 if (hotkey_supported)
490 hotkey_set(hotkey_orig_status, hotkey_orig_mask);
491 }
492
493 static void hotkey_notify(struct ibm_struct *ibm, u32 event)
494 {
495 int hkey;
496
497 if (acpi_evalf(hkey_handle, &hkey, "MHKP", "d"))
498 acpi_bus_generate_event(ibm->device, event, hkey);
499 else {
500 printk(IBM_ERR "unknown hotkey event %d\n", event);
501 acpi_bus_generate_event(ibm->device, event, 0);
502 }
503 }
504
505 static int bluetooth_supported;
506
507 static int bluetooth_init(void)
508 {
509 /* bluetooth not supported on 570, 600e/x, 770e, 770x, A21e, A2xm/p,
510 G4x, R30, R31, R40e, R50e, T20-22, X20-21 */
511 bluetooth_supported = hkey_handle &&
512 acpi_evalf(hkey_handle, NULL, "GBDC", "qv");
513
514 return 0;
515 }
516
517 static int bluetooth_status(void)
518 {
519 int status;
520
521 if (!bluetooth_supported ||
522 !acpi_evalf(hkey_handle, &status, "GBDC", "d"))
523 status = 0;
524
525 return status;
526 }
527
528 static int bluetooth_read(char *p)
529 {
530 int len = 0;
531 int status = bluetooth_status();
532
533 if (!bluetooth_supported)
534 len += sprintf(p + len, "status:\t\tnot supported\n");
535 else if (!(status & 1))
536 len += sprintf(p + len, "status:\t\tnot installed\n");
537 else {
538 len += sprintf(p + len, "status:\t\t%s\n", enabled(status, 1));
539 len += sprintf(p + len, "commands:\tenable, disable\n");
540 }
541
542 return len;
543 }
544
545 static int bluetooth_write(char *buf)
546 {
547 int status = bluetooth_status();
548 char *cmd;
549 int do_cmd = 0;
550
551 if (!bluetooth_supported)
552 return -ENODEV;
553
554 while ((cmd = next_cmd(&buf))) {
555 if (strlencmp(cmd, "enable") == 0) {
556 status |= 2;
557 } else if (strlencmp(cmd, "disable") == 0) {
558 status &= ~2;
559 } else
560 return -EINVAL;
561 do_cmd = 1;
562 }
563
564 if (do_cmd && !acpi_evalf(hkey_handle, NULL, "SBDC", "vd", status))
565 return -EIO;
566
567 return 0;
568 }
569
570 static int wan_supported;
571
572 static int wan_init(void)
573 {
574 wan_supported = hkey_handle &&
575 acpi_evalf(hkey_handle, NULL, "GWAN", "qv");
576
577 return 0;
578 }
579
580 static int wan_status(void)
581 {
582 int status;
583
584 if (!wan_supported ||
585 !acpi_evalf(hkey_handle, &status, "GWAN", "d"))
586 status = 0;
587
588 return status;
589 }
590
591 static int wan_read(char *p)
592 {
593 int len = 0;
594 int status = wan_status();
595
596 if (!wan_supported)
597 len += sprintf(p + len, "status:\t\tnot supported\n");
598 else if (!(status & 1))
599 len += sprintf(p + len, "status:\t\tnot installed\n");
600 else {
601 len += sprintf(p + len, "status:\t\t%s\n", enabled(status, 1));
602 len += sprintf(p + len, "commands:\tenable, disable\n");
603 }
604
605 return len;
606 }
607
608 static int wan_write(char *buf)
609 {
610 int status = wan_status();
611 char *cmd;
612 int do_cmd = 0;
613
614 if (!wan_supported)
615 return -ENODEV;
616
617 while ((cmd = next_cmd(&buf))) {
618 if (strlencmp(cmd, "enable") == 0) {
619 status |= 2;
620 } else if (strlencmp(cmd, "disable") == 0) {
621 status &= ~2;
622 } else
623 return -EINVAL;
624 do_cmd = 1;
625 }
626
627 if (do_cmd && !acpi_evalf(hkey_handle, NULL, "SWAN", "vd", status))
628 return -EIO;
629
630 return 0;
631 }
632
633 static int video_supported;
634 static int video_orig_autosw;
635
636 #define VIDEO_570 1
637 #define VIDEO_770 2
638 #define VIDEO_NEW 3
639
640 static int video_init(void)
641 {
642 int ivga;
643
644 if (vid2_handle && acpi_evalf(NULL, &ivga, "\\IVGA", "d") && ivga)
645 /* G41, assume IVGA doesn't change */
646 vid_handle = vid2_handle;
647
648 if (!vid_handle)
649 /* video switching not supported on R30, R31 */
650 video_supported = 0;
651 else if (acpi_evalf(vid_handle, &video_orig_autosw, "SWIT", "qd"))
652 /* 570 */
653 video_supported = VIDEO_570;
654 else if (acpi_evalf(vid_handle, &video_orig_autosw, "^VADL", "qd"))
655 /* 600e/x, 770e, 770x */
656 video_supported = VIDEO_770;
657 else
658 /* all others */
659 video_supported = VIDEO_NEW;
660
661 return 0;
662 }
663
664 static int video_status(void)
665 {
666 int status = 0;
667 int i;
668
669 if (video_supported == VIDEO_570) {
670 if (acpi_evalf(NULL, &i, "\\_SB.PHS", "dd", 0x87))
671 status = i & 3;
672 } else if (video_supported == VIDEO_770) {
673 if (acpi_evalf(NULL, &i, "\\VCDL", "d"))
674 status |= 0x01 * i;
675 if (acpi_evalf(NULL, &i, "\\VCDC", "d"))
676 status |= 0x02 * i;
677 } else if (video_supported == VIDEO_NEW) {
678 acpi_evalf(NULL, NULL, "\\VUPS", "vd", 1);
679 if (acpi_evalf(NULL, &i, "\\VCDC", "d"))
680 status |= 0x02 * i;
681
682 acpi_evalf(NULL, NULL, "\\VUPS", "vd", 0);
683 if (acpi_evalf(NULL, &i, "\\VCDL", "d"))
684 status |= 0x01 * i;
685 if (acpi_evalf(NULL, &i, "\\VCDD", "d"))
686 status |= 0x08 * i;
687 }
688
689 return status;
690 }
691
692 static int video_autosw(void)
693 {
694 int autosw = 0;
695
696 if (video_supported == VIDEO_570)
697 acpi_evalf(vid_handle, &autosw, "SWIT", "d");
698 else if (video_supported == VIDEO_770 || video_supported == VIDEO_NEW)
699 acpi_evalf(vid_handle, &autosw, "^VDEE", "d");
700
701 return autosw & 1;
702 }
703
704 static int video_read(char *p)
705 {
706 int status = video_status();
707 int autosw = video_autosw();
708 int len = 0;
709
710 if (!video_supported) {
711 len += sprintf(p + len, "status:\t\tnot supported\n");
712 return len;
713 }
714
715 len += sprintf(p + len, "status:\t\tsupported\n");
716 len += sprintf(p + len, "lcd:\t\t%s\n", enabled(status, 0));
717 len += sprintf(p + len, "crt:\t\t%s\n", enabled(status, 1));
718 if (video_supported == VIDEO_NEW)
719 len += sprintf(p + len, "dvi:\t\t%s\n", enabled(status, 3));
720 len += sprintf(p + len, "auto:\t\t%s\n", enabled(autosw, 0));
721 len += sprintf(p + len, "commands:\tlcd_enable, lcd_disable\n");
722 len += sprintf(p + len, "commands:\tcrt_enable, crt_disable\n");
723 if (video_supported == VIDEO_NEW)
724 len += sprintf(p + len, "commands:\tdvi_enable, dvi_disable\n");
725 len += sprintf(p + len, "commands:\tauto_enable, auto_disable\n");
726 len += sprintf(p + len, "commands:\tvideo_switch, expand_toggle\n");
727
728 return len;
729 }
730
731 static int video_switch(void)
732 {
733 int autosw = video_autosw();
734 int ret;
735
736 if (!acpi_evalf(vid_handle, NULL, "_DOS", "vd", 1))
737 return -EIO;
738 ret = video_supported == VIDEO_570 ?
739 acpi_evalf(ec_handle, NULL, "_Q16", "v") :
740 acpi_evalf(vid_handle, NULL, "VSWT", "v");
741 acpi_evalf(vid_handle, NULL, "_DOS", "vd", autosw);
742
743 return ret;
744 }
745
746 static int video_expand(void)
747 {
748 if (video_supported == VIDEO_570)
749 return acpi_evalf(ec_handle, NULL, "_Q17", "v");
750 else if (video_supported == VIDEO_770)
751 return acpi_evalf(vid_handle, NULL, "VEXP", "v");
752 else
753 return acpi_evalf(NULL, NULL, "\\VEXP", "v");
754 }
755
756 static int video_switch2(int status)
757 {
758 int ret;
759
760 if (video_supported == VIDEO_570) {
761 ret = acpi_evalf(NULL, NULL,
762 "\\_SB.PHS2", "vdd", 0x8b, status | 0x80);
763 } else if (video_supported == VIDEO_770) {
764 int autosw = video_autosw();
765 if (!acpi_evalf(vid_handle, NULL, "_DOS", "vd", 1))
766 return -EIO;
767
768 ret = acpi_evalf(vid_handle, NULL,
769 "ASWT", "vdd", status * 0x100, 0);
770
771 acpi_evalf(vid_handle, NULL, "_DOS", "vd", autosw);
772 } else {
773 ret = acpi_evalf(NULL, NULL, "\\VUPS", "vd", 0x80) &&
774 acpi_evalf(NULL, NULL, "\\VSDS", "vdd", status, 1);
775 }
776
777 return ret;
778 }
779
780 static int video_write(char *buf)
781 {
782 char *cmd;
783 int enable, disable, status;
784
785 if (!video_supported)
786 return -ENODEV;
787
788 enable = disable = 0;
789
790 while ((cmd = next_cmd(&buf))) {
791 if (strlencmp(cmd, "lcd_enable") == 0) {
792 enable |= 0x01;
793 } else if (strlencmp(cmd, "lcd_disable") == 0) {
794 disable |= 0x01;
795 } else if (strlencmp(cmd, "crt_enable") == 0) {
796 enable |= 0x02;
797 } else if (strlencmp(cmd, "crt_disable") == 0) {
798 disable |= 0x02;
799 } else if (video_supported == VIDEO_NEW &&
800 strlencmp(cmd, "dvi_enable") == 0) {
801 enable |= 0x08;
802 } else if (video_supported == VIDEO_NEW &&
803 strlencmp(cmd, "dvi_disable") == 0) {
804 disable |= 0x08;
805 } else if (strlencmp(cmd, "auto_enable") == 0) {
806 if (!acpi_evalf(vid_handle, NULL, "_DOS", "vd", 1))
807 return -EIO;
808 } else if (strlencmp(cmd, "auto_disable") == 0) {
809 if (!acpi_evalf(vid_handle, NULL, "_DOS", "vd", 0))
810 return -EIO;
811 } else if (strlencmp(cmd, "video_switch") == 0) {
812 if (!video_switch())
813 return -EIO;
814 } else if (strlencmp(cmd, "expand_toggle") == 0) {
815 if (!video_expand())
816 return -EIO;
817 } else
818 return -EINVAL;
819 }
820
821 if (enable || disable) {
822 status = (video_status() & 0x0f & ~disable) | enable;
823 if (!video_switch2(status))
824 return -EIO;
825 }
826
827 return 0;
828 }
829
830 static void video_exit(void)
831 {
832 acpi_evalf(vid_handle, NULL, "_DOS", "vd", video_orig_autosw);
833 }
834
835 static int light_supported;
836 static int light_status_supported;
837
838 static int light_init(void)
839 {
840 /* light not supported on 570, 600e/x, 770e, 770x, G4x, R30, R31 */
841 light_supported = (cmos_handle || lght_handle) && !ledb_handle;
842
843 if (light_supported)
844 /* light status not supported on
845 570, 600e/x, 770e, 770x, G4x, R30, R31, R32, X20 */
846 light_status_supported = acpi_evalf(ec_handle, NULL,
847 "KBLT", "qv");
848
849 return 0;
850 }
851
852 static int light_read(char *p)
853 {
854 int len = 0;
855 int status = 0;
856
857 if (!light_supported) {
858 len += sprintf(p + len, "status:\t\tnot supported\n");
859 } else if (!light_status_supported) {
860 len += sprintf(p + len, "status:\t\tunknown\n");
861 len += sprintf(p + len, "commands:\ton, off\n");
862 } else {
863 if (!acpi_evalf(ec_handle, &status, "KBLT", "d"))
864 return -EIO;
865 len += sprintf(p + len, "status:\t\t%s\n", onoff(status, 0));
866 len += sprintf(p + len, "commands:\ton, off\n");
867 }
868
869 return len;
870 }
871
872 static int light_write(char *buf)
873 {
874 int cmos_cmd, lght_cmd;
875 char *cmd;
876 int success;
877
878 if (!light_supported)
879 return -ENODEV;
880
881 while ((cmd = next_cmd(&buf))) {
882 if (strlencmp(cmd, "on") == 0) {
883 cmos_cmd = 0x0c;
884 lght_cmd = 1;
885 } else if (strlencmp(cmd, "off") == 0) {
886 cmos_cmd = 0x0d;
887 lght_cmd = 0;
888 } else
889 return -EINVAL;
890
891 success = cmos_handle ?
892 acpi_evalf(cmos_handle, NULL, NULL, "vd", cmos_cmd) :
893 acpi_evalf(lght_handle, NULL, NULL, "vd", lght_cmd);
894 if (!success)
895 return -EIO;
896 }
897
898 return 0;
899 }
900
901 static int _sta(acpi_handle handle)
902 {
903 int status;
904
905 if (!handle || !acpi_evalf(handle, &status, "_STA", "d"))
906 status = 0;
907
908 return status;
909 }
910 #ifdef CONFIG_ACPI_IBM_DOCK
911 #define dock_docked() (_sta(dock_handle) & 1)
912
913 static int dock_read(char *p)
914 {
915 int len = 0;
916 int docked = dock_docked();
917
918 if (!dock_handle)
919 len += sprintf(p + len, "status:\t\tnot supported\n");
920 else if (!docked)
921 len += sprintf(p + len, "status:\t\tundocked\n");
922 else {
923 len += sprintf(p + len, "status:\t\tdocked\n");
924 len += sprintf(p + len, "commands:\tdock, undock\n");
925 }
926
927 return len;
928 }
929
930 static int dock_write(char *buf)
931 {
932 char *cmd;
933
934 if (!dock_docked())
935 return -ENODEV;
936
937 while ((cmd = next_cmd(&buf))) {
938 if (strlencmp(cmd, "undock") == 0) {
939 if (!acpi_evalf(dock_handle, NULL, "_DCK", "vd", 0) ||
940 !acpi_evalf(dock_handle, NULL, "_EJ0", "vd", 1))
941 return -EIO;
942 } else if (strlencmp(cmd, "dock") == 0) {
943 if (!acpi_evalf(dock_handle, NULL, "_DCK", "vd", 1))
944 return -EIO;
945 } else
946 return -EINVAL;
947 }
948
949 return 0;
950 }
951
952 static void dock_notify(struct ibm_struct *ibm, u32 event)
953 {
954 int docked = dock_docked();
955 int pci = ibm->hid && strstr(ibm->hid, IBM_PCI_HID);
956
957 if (event == 1 && !pci) /* 570 */
958 acpi_bus_generate_event(ibm->device, event, 1); /* button */
959 else if (event == 1 && pci) /* 570 */
960 acpi_bus_generate_event(ibm->device, event, 3); /* dock */
961 else if (event == 3 && docked)
962 acpi_bus_generate_event(ibm->device, event, 1); /* button */
963 else if (event == 3 && !docked)
964 acpi_bus_generate_event(ibm->device, event, 2); /* undock */
965 else if (event == 0 && docked)
966 acpi_bus_generate_event(ibm->device, event, 3); /* dock */
967 else {
968 printk(IBM_ERR "unknown dock event %d, status %d\n",
969 event, _sta(dock_handle));
970 acpi_bus_generate_event(ibm->device, event, 0); /* unknown */
971 }
972 }
973 #endif
974
975 static int bay_status_supported;
976 static int bay_status2_supported;
977 static int bay_eject_supported;
978 static int bay_eject2_supported;
979
980 static int bay_init(void)
981 {
982 bay_status_supported = bay_handle &&
983 acpi_evalf(bay_handle, NULL, "_STA", "qv");
984 bay_status2_supported = bay2_handle &&
985 acpi_evalf(bay2_handle, NULL, "_STA", "qv");
986
987 bay_eject_supported = bay_handle && bay_ej_handle &&
988 (strlencmp(bay_ej_path, "_EJ0") == 0 || experimental);
989 bay_eject2_supported = bay2_handle && bay2_ej_handle &&
990 (strlencmp(bay2_ej_path, "_EJ0") == 0 || experimental);
991
992 return 0;
993 }
994
995 #define bay_occupied(b) (_sta(b##_handle) & 1)
996
997 static int bay_read(char *p)
998 {
999 int len = 0;
1000 int occupied = bay_occupied(bay);
1001 int occupied2 = bay_occupied(bay2);
1002 int eject, eject2;
1003
1004 len += sprintf(p + len, "status:\t\t%s\n", bay_status_supported ?
1005 (occupied ? "occupied" : "unoccupied") :
1006 "not supported");
1007 if (bay_status2_supported)
1008 len += sprintf(p + len, "status2:\t%s\n", occupied2 ?
1009 "occupied" : "unoccupied");
1010
1011 eject = bay_eject_supported && occupied;
1012 eject2 = bay_eject2_supported && occupied2;
1013
1014 if (eject && eject2)
1015 len += sprintf(p + len, "commands:\teject, eject2\n");
1016 else if (eject)
1017 len += sprintf(p + len, "commands:\teject\n");
1018 else if (eject2)
1019 len += sprintf(p + len, "commands:\teject2\n");
1020
1021 return len;
1022 }
1023
1024 static int bay_write(char *buf)
1025 {
1026 char *cmd;
1027
1028 if (!bay_eject_supported && !bay_eject2_supported)
1029 return -ENODEV;
1030
1031 while ((cmd = next_cmd(&buf))) {
1032 if (bay_eject_supported && strlencmp(cmd, "eject") == 0) {
1033 if (!acpi_evalf(bay_ej_handle, NULL, NULL, "vd", 1))
1034 return -EIO;
1035 } else if (bay_eject2_supported &&
1036 strlencmp(cmd, "eject2") == 0) {
1037 if (!acpi_evalf(bay2_ej_handle, NULL, NULL, "vd", 1))
1038 return -EIO;
1039 } else
1040 return -EINVAL;
1041 }
1042
1043 return 0;
1044 }
1045
1046 static void bay_notify(struct ibm_struct *ibm, u32 event)
1047 {
1048 acpi_bus_generate_event(ibm->device, event, 0);
1049 }
1050
1051 static int cmos_read(char *p)
1052 {
1053 int len = 0;
1054
1055 /* cmos not supported on 570, 600e/x, 770e, 770x, A21e, A2xm/p,
1056 R30, R31, T20-22, X20-21 */
1057 if (!cmos_handle)
1058 len += sprintf(p + len, "status:\t\tnot supported\n");
1059 else {
1060 len += sprintf(p + len, "status:\t\tsupported\n");
1061 len += sprintf(p + len, "commands:\t<cmd> (<cmd> is 0-21)\n");
1062 }
1063
1064 return len;
1065 }
1066
1067 static int cmos_eval(int cmos_cmd)
1068 {
1069 if (cmos_handle)
1070 return acpi_evalf(cmos_handle, NULL, NULL, "vd", cmos_cmd);
1071 else
1072 return 1;
1073 }
1074
1075 static int cmos_write(char *buf)
1076 {
1077 char *cmd;
1078 int cmos_cmd;
1079
1080 if (!cmos_handle)
1081 return -EINVAL;
1082
1083 while ((cmd = next_cmd(&buf))) {
1084 if (sscanf(cmd, "%u", &cmos_cmd) == 1 &&
1085 cmos_cmd >= 0 && cmos_cmd <= 21) {
1086 /* cmos_cmd set */
1087 } else
1088 return -EINVAL;
1089
1090 if (!cmos_eval(cmos_cmd))
1091 return -EIO;
1092 }
1093
1094 return 0;
1095 }
1096
1097 static int led_supported;
1098
1099 #define LED_570 1
1100 #define LED_OLD 2
1101 #define LED_NEW 3
1102
1103 static int led_init(void)
1104 {
1105 if (!led_handle)
1106 /* led not supported on R30, R31 */
1107 led_supported = 0;
1108 else if (strlencmp(led_path, "SLED") == 0)
1109 /* 570 */
1110 led_supported = LED_570;
1111 else if (strlencmp(led_path, "SYSL") == 0)
1112 /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20-21 */
1113 led_supported = LED_OLD;
1114 else
1115 /* all others */
1116 led_supported = LED_NEW;
1117
1118 return 0;
1119 }
1120
1121 #define led_status(s) ((s) == 0 ? "off" : ((s) == 1 ? "on" : "blinking"))
1122
1123 static int led_read(char *p)
1124 {
1125 int len = 0;
1126
1127 if (!led_supported) {
1128 len += sprintf(p + len, "status:\t\tnot supported\n");
1129 return len;
1130 }
1131 len += sprintf(p + len, "status:\t\tsupported\n");
1132
1133 if (led_supported == LED_570) {
1134 /* 570 */
1135 int i, status;
1136 for (i = 0; i < 8; i++) {
1137 if (!acpi_evalf(ec_handle,
1138 &status, "GLED", "dd", 1 << i))
1139 return -EIO;
1140 len += sprintf(p + len, "%d:\t\t%s\n",
1141 i, led_status(status));
1142 }
1143 }
1144
1145 len += sprintf(p + len, "commands:\t"
1146 "<led> on, <led> off, <led> blink (<led> is 0-7)\n");
1147
1148 return len;
1149 }
1150
1151 /* off, on, blink */
1152 static const int led_sled_arg1[] = { 0, 1, 3 };
1153 static const int led_exp_hlbl[] = { 0, 0, 1 }; /* led# * */
1154 static const int led_exp_hlcl[] = { 0, 1, 1 }; /* led# * */
1155 static const int led_led_arg1[] = { 0, 0x80, 0xc0 };
1156
1157 #define EC_HLCL 0x0c
1158 #define EC_HLBL 0x0d
1159 #define EC_HLMS 0x0e
1160
1161 static int led_write(char *buf)
1162 {
1163 char *cmd;
1164 int led, ind, ret;
1165
1166 if (!led_supported)
1167 return -ENODEV;
1168
1169 while ((cmd = next_cmd(&buf))) {
1170 if (sscanf(cmd, "%d", &led) != 1 || led < 0 || led > 7)
1171 return -EINVAL;
1172
1173 if (strstr(cmd, "off")) {
1174 ind = 0;
1175 } else if (strstr(cmd, "on")) {
1176 ind = 1;
1177 } else if (strstr(cmd, "blink")) {
1178 ind = 2;
1179 } else
1180 return -EINVAL;
1181
1182 if (led_supported == LED_570) {
1183 /* 570 */
1184 led = 1 << led;
1185 if (!acpi_evalf(led_handle, NULL, NULL, "vdd",
1186 led, led_sled_arg1[ind]))
1187 return -EIO;
1188 } else if (led_supported == LED_OLD) {
1189 /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20 */
1190 led = 1 << led;
1191 ret = ec_write(EC_HLMS, led);
1192 if (ret >= 0)
1193 ret =
1194 ec_write(EC_HLBL, led * led_exp_hlbl[ind]);
1195 if (ret >= 0)
1196 ret =
1197 ec_write(EC_HLCL, led * led_exp_hlcl[ind]);
1198 if (ret < 0)
1199 return ret;
1200 } else {
1201 /* all others */
1202 if (!acpi_evalf(led_handle, NULL, NULL, "vdd",
1203 led, led_led_arg1[ind]))
1204 return -EIO;
1205 }
1206 }
1207
1208 return 0;
1209 }
1210
1211 static int beep_read(char *p)
1212 {
1213 int len = 0;
1214
1215 if (!beep_handle)
1216 len += sprintf(p + len, "status:\t\tnot supported\n");
1217 else {
1218 len += sprintf(p + len, "status:\t\tsupported\n");
1219 len += sprintf(p + len, "commands:\t<cmd> (<cmd> is 0-17)\n");
1220 }
1221
1222 return len;
1223 }
1224
1225 static int beep_write(char *buf)
1226 {
1227 char *cmd;
1228 int beep_cmd;
1229
1230 if (!beep_handle)
1231 return -ENODEV;
1232
1233 while ((cmd = next_cmd(&buf))) {
1234 if (sscanf(cmd, "%u", &beep_cmd) == 1 &&
1235 beep_cmd >= 0 && beep_cmd <= 17) {
1236 /* beep_cmd set */
1237 } else
1238 return -EINVAL;
1239 if (!acpi_evalf(beep_handle, NULL, NULL, "vdd", beep_cmd, 0))
1240 return -EIO;
1241 }
1242
1243 return 0;
1244 }
1245
1246 static int acpi_ec_read(int i, u8 * p)
1247 {
1248 int v;
1249
1250 if (ecrd_handle) {
1251 if (!acpi_evalf(ecrd_handle, &v, NULL, "dd", i))
1252 return 0;
1253 *p = v;
1254 } else {
1255 if (ec_read(i, p) < 0)
1256 return 0;
1257 }
1258
1259 return 1;
1260 }
1261
1262 static int acpi_ec_write(int i, u8 v)
1263 {
1264 if (ecwr_handle) {
1265 if (!acpi_evalf(ecwr_handle, NULL, NULL, "vdd", i, v))
1266 return 0;
1267 } else {
1268 if (ec_write(i, v) < 0)
1269 return 0;
1270 }
1271
1272 return 1;
1273 }
1274
1275 static int thermal_tmp_supported;
1276 static int thermal_updt_supported;
1277
1278 static int thermal_init(void)
1279 {
1280 /* temperatures not supported on 570, G4x, R30, R31, R32 */
1281 thermal_tmp_supported = acpi_evalf(ec_handle, NULL, "TMP7", "qv");
1282
1283 /* 600e/x, 770e, 770x */
1284 thermal_updt_supported = acpi_evalf(ec_handle, NULL, "UPDT", "qv");
1285
1286 return 0;
1287 }
1288
1289 static int thermal_read(char *p)
1290 {
1291 int len = 0;
1292
1293 if (!thermal_tmp_supported)
1294 len += sprintf(p + len, "temperatures:\tnot supported\n");
1295 else {
1296 int i, t;
1297 char tmpi[] = "TMPi";
1298 s8 tmp[8];
1299
1300 if (thermal_updt_supported)
1301 if (!acpi_evalf(ec_handle, NULL, "UPDT", "v"))
1302 return -EIO;
1303
1304 for (i = 0; i < 8; i++) {
1305 tmpi[3] = '0' + i;
1306 if (!acpi_evalf(ec_handle, &t, tmpi, "d"))
1307 return -EIO;
1308 if (thermal_updt_supported)
1309 tmp[i] = (t - 2732 + 5) / 10;
1310 else
1311 tmp[i] = t;
1312 }
1313
1314 len += sprintf(p + len,
1315 "temperatures:\t%d %d %d %d %d %d %d %d\n",
1316 tmp[0], tmp[1], tmp[2], tmp[3],
1317 tmp[4], tmp[5], tmp[6], tmp[7]);
1318 }
1319
1320 return len;
1321 }
1322
1323 static u8 ecdump_regs[256];
1324
1325 static int ecdump_read(char *p)
1326 {
1327 int len = 0;
1328 int i, j;
1329 u8 v;
1330
1331 len += sprintf(p + len, "EC "
1332 " +00 +01 +02 +03 +04 +05 +06 +07"
1333 " +08 +09 +0a +0b +0c +0d +0e +0f\n");
1334 for (i = 0; i < 256; i += 16) {
1335 len += sprintf(p + len, "EC 0x%02x:", i);
1336 for (j = 0; j < 16; j++) {
1337 if (!acpi_ec_read(i + j, &v))
1338 break;
1339 if (v != ecdump_regs[i + j])
1340 len += sprintf(p + len, " *%02x", v);
1341 else
1342 len += sprintf(p + len, " %02x", v);
1343 ecdump_regs[i + j] = v;
1344 }
1345 len += sprintf(p + len, "\n");
1346 if (j != 16)
1347 break;
1348 }
1349
1350 /* These are way too dangerous to advertise openly... */
1351 #if 0
1352 len += sprintf(p + len, "commands:\t0x<offset> 0x<value>"
1353 " (<offset> is 00-ff, <value> is 00-ff)\n");
1354 len += sprintf(p + len, "commands:\t0x<offset> <value> "
1355 " (<offset> is 00-ff, <value> is 0-255)\n");
1356 #endif
1357 return len;
1358 }
1359
1360 static int ecdump_write(char *buf)
1361 {
1362 char *cmd;
1363 int i, v;
1364
1365 while ((cmd = next_cmd(&buf))) {
1366 if (sscanf(cmd, "0x%x 0x%x", &i, &v) == 2) {
1367 /* i and v set */
1368 } else if (sscanf(cmd, "0x%x %u", &i, &v) == 2) {
1369 /* i and v set */
1370 } else
1371 return -EINVAL;
1372 if (i >= 0 && i < 256 && v >= 0 && v < 256) {
1373 if (!acpi_ec_write(i, v))
1374 return -EIO;
1375 } else
1376 return -EINVAL;
1377 }
1378
1379 return 0;
1380 }
1381
1382 static int brightness_offset = 0x31;
1383
1384 static int brightness_read(char *p)
1385 {
1386 int len = 0;
1387 u8 level;
1388
1389 if (!acpi_ec_read(brightness_offset, &level)) {
1390 len += sprintf(p + len, "level:\t\tunreadable\n");
1391 } else {
1392 len += sprintf(p + len, "level:\t\t%d\n", level & 0x7);
1393 len += sprintf(p + len, "commands:\tup, down\n");
1394 len += sprintf(p + len, "commands:\tlevel <level>"
1395 " (<level> is 0-7)\n");
1396 }
1397
1398 return len;
1399 }
1400
1401 #define BRIGHTNESS_UP 4
1402 #define BRIGHTNESS_DOWN 5
1403
1404 static int brightness_write(char *buf)
1405 {
1406 int cmos_cmd, inc, i;
1407 u8 level;
1408 int new_level;
1409 char *cmd;
1410
1411 while ((cmd = next_cmd(&buf))) {
1412 if (!acpi_ec_read(brightness_offset, &level))
1413 return -EIO;
1414 level &= 7;
1415
1416 if (strlencmp(cmd, "up") == 0) {
1417 new_level = level == 7 ? 7 : level + 1;
1418 } else if (strlencmp(cmd, "down") == 0) {
1419 new_level = level == 0 ? 0 : level - 1;
1420 } else if (sscanf(cmd, "level %d", &new_level) == 1 &&
1421 new_level >= 0 && new_level <= 7) {
1422 /* new_level set */
1423 } else
1424 return -EINVAL;
1425
1426 cmos_cmd = new_level > level ? BRIGHTNESS_UP : BRIGHTNESS_DOWN;
1427 inc = new_level > level ? 1 : -1;
1428 for (i = level; i != new_level; i += inc) {
1429 if (!cmos_eval(cmos_cmd))
1430 return -EIO;
1431 if (!acpi_ec_write(brightness_offset, i + inc))
1432 return -EIO;
1433 }
1434 }
1435
1436 return 0;
1437 }
1438
1439 static int volume_offset = 0x30;
1440
1441 static int volume_read(char *p)
1442 {
1443 int len = 0;
1444 u8 level;
1445
1446 if (!acpi_ec_read(volume_offset, &level)) {
1447 len += sprintf(p + len, "level:\t\tunreadable\n");
1448 } else {
1449 len += sprintf(p + len, "level:\t\t%d\n", level & 0xf);
1450 len += sprintf(p + len, "mute:\t\t%s\n", onoff(level, 6));
1451 len += sprintf(p + len, "commands:\tup, down, mute\n");
1452 len += sprintf(p + len, "commands:\tlevel <level>"
1453 " (<level> is 0-15)\n");
1454 }
1455
1456 return len;
1457 }
1458
1459 #define VOLUME_DOWN 0
1460 #define VOLUME_UP 1
1461 #define VOLUME_MUTE 2
1462
1463 static int volume_write(char *buf)
1464 {
1465 int cmos_cmd, inc, i;
1466 u8 level, mute;
1467 int new_level, new_mute;
1468 char *cmd;
1469
1470 while ((cmd = next_cmd(&buf))) {
1471 if (!acpi_ec_read(volume_offset, &level))
1472 return -EIO;
1473 new_mute = mute = level & 0x40;
1474 new_level = level = level & 0xf;
1475
1476 if (strlencmp(cmd, "up") == 0) {
1477 if (mute)
1478 new_mute = 0;
1479 else
1480 new_level = level == 15 ? 15 : level + 1;
1481 } else if (strlencmp(cmd, "down") == 0) {
1482 if (mute)
1483 new_mute = 0;
1484 else
1485 new_level = level == 0 ? 0 : level - 1;
1486 } else if (sscanf(cmd, "level %d", &new_level) == 1 &&
1487 new_level >= 0 && new_level <= 15) {
1488 /* new_level set */
1489 } else if (strlencmp(cmd, "mute") == 0) {
1490 new_mute = 0x40;
1491 } else
1492 return -EINVAL;
1493
1494 if (new_level != level) { /* mute doesn't change */
1495 cmos_cmd = new_level > level ? VOLUME_UP : VOLUME_DOWN;
1496 inc = new_level > level ? 1 : -1;
1497
1498 if (mute && (!cmos_eval(cmos_cmd) ||
1499 !acpi_ec_write(volume_offset, level)))
1500 return -EIO;
1501
1502 for (i = level; i != new_level; i += inc)
1503 if (!cmos_eval(cmos_cmd) ||
1504 !acpi_ec_write(volume_offset, i + inc))
1505 return -EIO;
1506
1507 if (mute && (!cmos_eval(VOLUME_MUTE) ||
1508 !acpi_ec_write(volume_offset,
1509 new_level + mute)))
1510 return -EIO;
1511 }
1512
1513 if (new_mute != mute) { /* level doesn't change */
1514 cmos_cmd = new_mute ? VOLUME_MUTE : VOLUME_UP;
1515
1516 if (!cmos_eval(cmos_cmd) ||
1517 !acpi_ec_write(volume_offset, level + new_mute))
1518 return -EIO;
1519 }
1520 }
1521
1522 return 0;
1523 }
1524
1525 static int fan_status_offset = 0x2f;
1526 static int fan_rpm_offset = 0x84;
1527
1528 static int fan_read(char *p)
1529 {
1530 int len = 0;
1531 int s;
1532 u8 lo, hi, status;
1533
1534 if (gfan_handle) {
1535 /* 570, 600e/x, 770e, 770x */
1536 if (!acpi_evalf(gfan_handle, &s, NULL, "d"))
1537 return -EIO;
1538
1539 len += sprintf(p + len, "level:\t\t%d\n", s);
1540 } else {
1541 /* all except 570, 600e/x, 770e, 770x */
1542 if (!acpi_ec_read(fan_status_offset, &status))
1543 len += sprintf(p + len, "status:\t\tunreadable\n");
1544 else
1545 len += sprintf(p + len, "status:\t\t%s\n",
1546 enabled(status, 7));
1547
1548 if (!acpi_ec_read(fan_rpm_offset, &lo) ||
1549 !acpi_ec_read(fan_rpm_offset + 1, &hi))
1550 len += sprintf(p + len, "speed:\t\tunreadable\n");
1551 else
1552 len += sprintf(p + len, "speed:\t\t%d\n",
1553 (hi << 8) + lo);
1554 }
1555
1556 if (sfan_handle)
1557 /* 570, 770x-JL */
1558 len += sprintf(p + len, "commands:\tlevel <level>"
1559 " (<level> is 0-7)\n");
1560 if (!gfan_handle)
1561 /* all except 570, 600e/x, 770e, 770x */
1562 len += sprintf(p + len, "commands:\tenable, disable\n");
1563 if (fans_handle)
1564 /* X31, X40 */
1565 len += sprintf(p + len, "commands:\tspeed <speed>"
1566 " (<speed> is 0-65535)\n");
1567
1568 return len;
1569 }
1570
1571 static int fan_write(char *buf)
1572 {
1573 char *cmd;
1574 int level, speed;
1575
1576 while ((cmd = next_cmd(&buf))) {
1577 if (sfan_handle &&
1578 sscanf(cmd, "level %d", &level) == 1 &&
1579 level >= 0 && level <= 7) {
1580 /* 570, 770x-JL */
1581 if (!acpi_evalf(sfan_handle, NULL, NULL, "vd", level))
1582 return -EIO;
1583 } else if (!gfan_handle && strlencmp(cmd, "enable") == 0) {
1584 /* all except 570, 600e/x, 770e, 770x */
1585 if (!acpi_ec_write(fan_status_offset, 0x80))
1586 return -EIO;
1587 } else if (!gfan_handle && strlencmp(cmd, "disable") == 0) {
1588 /* all except 570, 600e/x, 770e, 770x */
1589 if (!acpi_ec_write(fan_status_offset, 0x00))
1590 return -EIO;
1591 } else if (fans_handle &&
1592 sscanf(cmd, "speed %d", &speed) == 1 &&
1593 speed >= 0 && speed <= 65535) {
1594 /* X31, X40 */
1595 if (!acpi_evalf(fans_handle, NULL, NULL, "vddd",
1596 speed, speed, speed))
1597 return -EIO;
1598 } else
1599 return -EINVAL;
1600 }
1601
1602 return 0;
1603 }
1604
1605 static struct ibm_struct ibms[] = {
1606 {
1607 .name = "driver",
1608 .init = driver_init,
1609 .read = driver_read,
1610 },
1611 {
1612 .name = "hotkey",
1613 .hid = IBM_HKEY_HID,
1614 .init = hotkey_init,
1615 .read = hotkey_read,
1616 .write = hotkey_write,
1617 .exit = hotkey_exit,
1618 .notify = hotkey_notify,
1619 .handle = &hkey_handle,
1620 .type = ACPI_DEVICE_NOTIFY,
1621 },
1622 {
1623 .name = "bluetooth",
1624 .init = bluetooth_init,
1625 .read = bluetooth_read,
1626 .write = bluetooth_write,
1627 },
1628 {
1629 .name = "wan",
1630 .init = wan_init,
1631 .read = wan_read,
1632 .write = wan_write,
1633 .experimental = 1,
1634 },
1635 {
1636 .name = "video",
1637 .init = video_init,
1638 .read = video_read,
1639 .write = video_write,
1640 .exit = video_exit,
1641 },
1642 {
1643 .name = "light",
1644 .init = light_init,
1645 .read = light_read,
1646 .write = light_write,
1647 },
1648 #ifdef CONFIG_ACPI_IBM_DOCK
1649 {
1650 .name = "dock",
1651 .read = dock_read,
1652 .write = dock_write,
1653 .notify = dock_notify,
1654 .handle = &dock_handle,
1655 .type = ACPI_SYSTEM_NOTIFY,
1656 },
1657 {
1658 .name = "dock",
1659 .hid = IBM_PCI_HID,
1660 .notify = dock_notify,
1661 .handle = &pci_handle,
1662 .type = ACPI_SYSTEM_NOTIFY,
1663 },
1664 #endif
1665 {
1666 .name = "bay",
1667 .init = bay_init,
1668 .read = bay_read,
1669 .write = bay_write,
1670 .notify = bay_notify,
1671 .handle = &bay_handle,
1672 .type = ACPI_SYSTEM_NOTIFY,
1673 },
1674 {
1675 .name = "cmos",
1676 .read = cmos_read,
1677 .write = cmos_write,
1678 },
1679 {
1680 .name = "led",
1681 .init = led_init,
1682 .read = led_read,
1683 .write = led_write,
1684 },
1685 {
1686 .name = "beep",
1687 .read = beep_read,
1688 .write = beep_write,
1689 },
1690 {
1691 .name = "thermal",
1692 .init = thermal_init,
1693 .read = thermal_read,
1694 },
1695 {
1696 .name = "ecdump",
1697 .read = ecdump_read,
1698 .write = ecdump_write,
1699 .experimental = 1,
1700 },
1701 {
1702 .name = "brightness",
1703 .read = brightness_read,
1704 .write = brightness_write,
1705 .experimental = 1,
1706 },
1707 {
1708 .name = "volume",
1709 .read = volume_read,
1710 .write = volume_write,
1711 .experimental = 1,
1712 },
1713 {
1714 .name = "fan",
1715 .read = fan_read,
1716 .write = fan_write,
1717 .experimental = 1,
1718 },
1719 };
1720
1721 static int dispatch_read(char *page, char **start, off_t off, int count,
1722 int *eof, void *data)
1723 {
1724 struct ibm_struct *ibm = (struct ibm_struct *)data;
1725 int len;
1726
1727 if (!ibm || !ibm->read)
1728 return -EINVAL;
1729
1730 len = ibm->read(page);
1731 if (len < 0)
1732 return len;
1733
1734 if (len <= off + count)
1735 *eof = 1;
1736 *start = page + off;
1737 len -= off;
1738 if (len > count)
1739 len = count;
1740 if (len < 0)
1741 len = 0;
1742
1743 return len;
1744 }
1745
1746 static int dispatch_write(struct file *file, const char __user * userbuf,
1747 unsigned long count, void *data)
1748 {
1749 struct ibm_struct *ibm = (struct ibm_struct *)data;
1750 char *kernbuf;
1751 int ret;
1752
1753 if (!ibm || !ibm->write)
1754 return -EINVAL;
1755
1756 kernbuf = kmalloc(count + 2, GFP_KERNEL);
1757 if (!kernbuf)
1758 return -ENOMEM;
1759
1760 if (copy_from_user(kernbuf, userbuf, count)) {
1761 kfree(kernbuf);
1762 return -EFAULT;
1763 }
1764
1765 kernbuf[count] = 0;
1766 strcat(kernbuf, ",");
1767 ret = ibm->write(kernbuf);
1768 if (ret == 0)
1769 ret = count;
1770
1771 kfree(kernbuf);
1772
1773 return ret;
1774 }
1775
1776 static void dispatch_notify(acpi_handle handle, u32 event, void *data)
1777 {
1778 struct ibm_struct *ibm = (struct ibm_struct *)data;
1779
1780 if (!ibm || !ibm->notify)
1781 return;
1782
1783 ibm->notify(ibm, event);
1784 }
1785
1786 static int __init setup_notify(struct ibm_struct *ibm)
1787 {
1788 acpi_status status;
1789 int ret;
1790
1791 if (!*ibm->handle)
1792 return 0;
1793
1794 ret = acpi_bus_get_device(*ibm->handle, &ibm->device);
1795 if (ret < 0) {
1796 printk(IBM_ERR "%s device not present\n", ibm->name);
1797 return 0;
1798 }
1799
1800 acpi_driver_data(ibm->device) = ibm;
1801 sprintf(acpi_device_class(ibm->device), "%s/%s", IBM_NAME, ibm->name);
1802
1803 status = acpi_install_notify_handler(*ibm->handle, ibm->type,
1804 dispatch_notify, ibm);
1805 if (ACPI_FAILURE(status)) {
1806 printk(IBM_ERR "acpi_install_notify_handler(%s) failed: %d\n",
1807 ibm->name, status);
1808 return -ENODEV;
1809 }
1810
1811 return 0;
1812 }
1813
1814 static int __init ibm_device_add(struct acpi_device *device)
1815 {
1816 return 0;
1817 }
1818
1819 static int __init register_driver(struct ibm_struct *ibm)
1820 {
1821 int ret;
1822
1823 ibm->driver = kmalloc(sizeof(struct acpi_driver), GFP_KERNEL);
1824 if (!ibm->driver) {
1825 printk(IBM_ERR "kmalloc(ibm->driver) failed\n");
1826 return -1;
1827 }
1828
1829 memset(ibm->driver, 0, sizeof(struct acpi_driver));
1830 sprintf(ibm->driver->name, "%s/%s", IBM_NAME, ibm->name);
1831 ibm->driver->ids = ibm->hid;
1832 ibm->driver->ops.add = &ibm_device_add;
1833
1834 ret = acpi_bus_register_driver(ibm->driver);
1835 if (ret < 0) {
1836 printk(IBM_ERR "acpi_bus_register_driver(%s) failed: %d\n",
1837 ibm->hid, ret);
1838 kfree(ibm->driver);
1839 }
1840
1841 return ret;
1842 }
1843
1844 static int __init ibm_init(struct ibm_struct *ibm)
1845 {
1846 int ret;
1847 struct proc_dir_entry *entry;
1848
1849 if (ibm->experimental && !experimental)
1850 return 0;
1851
1852 if (ibm->hid) {
1853 ret = register_driver(ibm);
1854 if (ret < 0)
1855 return ret;
1856 ibm->driver_registered = 1;
1857 }
1858
1859 if (ibm->init) {
1860 ret = ibm->init();
1861 if (ret != 0)
1862 return ret;
1863 ibm->init_called = 1;
1864 }
1865
1866 if (ibm->read) {
1867 entry = create_proc_entry(ibm->name,
1868 S_IFREG | S_IRUGO | S_IWUSR,
1869 proc_dir);
1870 if (!entry) {
1871 printk(IBM_ERR "unable to create proc entry %s\n",
1872 ibm->name);
1873 return -ENODEV;
1874 }
1875 entry->owner = THIS_MODULE;
1876 entry->data = ibm;
1877 entry->read_proc = &dispatch_read;
1878 if (ibm->write)
1879 entry->write_proc = &dispatch_write;
1880 ibm->proc_created = 1;
1881 }
1882
1883 if (ibm->notify) {
1884 ret = setup_notify(ibm);
1885 if (ret < 0)
1886 return ret;
1887 ibm->notify_installed = 1;
1888 }
1889
1890 return 0;
1891 }
1892
1893 static void ibm_exit(struct ibm_struct *ibm)
1894 {
1895 if (ibm->notify_installed)
1896 acpi_remove_notify_handler(*ibm->handle, ibm->type,
1897 dispatch_notify);
1898
1899 if (ibm->proc_created)
1900 remove_proc_entry(ibm->name, proc_dir);
1901
1902 if (ibm->init_called && ibm->exit)
1903 ibm->exit();
1904
1905 if (ibm->driver_registered) {
1906 acpi_bus_unregister_driver(ibm->driver);
1907 kfree(ibm->driver);
1908 }
1909 }
1910
1911 static void __init ibm_handle_init(char *name,
1912 acpi_handle * handle, acpi_handle parent,
1913 char **paths, int num_paths, char **path)
1914 {
1915 int i;
1916 acpi_status status;
1917
1918 for (i = 0; i < num_paths; i++) {
1919 status = acpi_get_handle(parent, paths[i], handle);
1920 if (ACPI_SUCCESS(status)) {
1921 *path = paths[i];
1922 return;
1923 }
1924 }
1925
1926 *handle = NULL;
1927 }
1928
1929 #define IBM_HANDLE_INIT(object) \
1930 ibm_handle_init(#object, &object##_handle, *object##_parent, \
1931 object##_paths, ARRAY_SIZE(object##_paths), &object##_path)
1932
1933 static int set_ibm_param(const char *val, struct kernel_param *kp)
1934 {
1935 unsigned int i;
1936
1937 for (i = 0; i < ARRAY_SIZE(ibms); i++)
1938 if (strcmp(ibms[i].name, kp->name) == 0 && ibms[i].write) {
1939 if (strlen(val) > sizeof(ibms[i].param) - 2)
1940 return -ENOSPC;
1941 strcpy(ibms[i].param, val);
1942 strcat(ibms[i].param, ",");
1943 return 0;
1944 }
1945
1946 return -EINVAL;
1947 }
1948
1949 #define IBM_PARAM(feature) \
1950 module_param_call(feature, set_ibm_param, NULL, NULL, 0)
1951
1952 IBM_PARAM(hotkey);
1953 IBM_PARAM(bluetooth);
1954 IBM_PARAM(video);
1955 IBM_PARAM(light);
1956 #ifdef CONFIG_ACPI_IBM_DOCK
1957 IBM_PARAM(dock);
1958 #endif
1959 IBM_PARAM(bay);
1960 IBM_PARAM(cmos);
1961 IBM_PARAM(led);
1962 IBM_PARAM(beep);
1963 IBM_PARAM(ecdump);
1964 IBM_PARAM(brightness);
1965 IBM_PARAM(volume);
1966 IBM_PARAM(fan);
1967
1968 static void acpi_ibm_exit(void)
1969 {
1970 int i;
1971
1972 for (i = ARRAY_SIZE(ibms) - 1; i >= 0; i--)
1973 ibm_exit(&ibms[i]);
1974
1975 remove_proc_entry(IBM_DIR, acpi_root_dir);
1976 }
1977
1978 static int __init acpi_ibm_init(void)
1979 {
1980 int ret, i;
1981
1982 if (acpi_disabled)
1983 return -ENODEV;
1984
1985 if (!acpi_specific_hotkey_enabled) {
1986 printk(IBM_ERR "using generic hotkey driver\n");
1987 return -ENODEV;
1988 }
1989
1990 /* ec is required because many other handles are relative to it */
1991 IBM_HANDLE_INIT(ec);
1992 if (!ec_handle) {
1993 printk(IBM_ERR "ec object not found\n");
1994 return -ENODEV;
1995 }
1996
1997 /* these handles are not required */
1998 IBM_HANDLE_INIT(vid);
1999 IBM_HANDLE_INIT(vid2);
2000 IBM_HANDLE_INIT(ledb);
2001 IBM_HANDLE_INIT(led);
2002 IBM_HANDLE_INIT(hkey);
2003 IBM_HANDLE_INIT(lght);
2004 IBM_HANDLE_INIT(cmos);
2005 #ifdef CONFIG_ACPI_IBM_DOCK
2006 IBM_HANDLE_INIT(dock);
2007 #endif
2008 IBM_HANDLE_INIT(pci);
2009 IBM_HANDLE_INIT(bay);
2010 if (bay_handle)
2011 IBM_HANDLE_INIT(bay_ej);
2012 IBM_HANDLE_INIT(bay2);
2013 if (bay2_handle)
2014 IBM_HANDLE_INIT(bay2_ej);
2015 IBM_HANDLE_INIT(beep);
2016 IBM_HANDLE_INIT(ecrd);
2017 IBM_HANDLE_INIT(ecwr);
2018 IBM_HANDLE_INIT(fans);
2019 IBM_HANDLE_INIT(gfan);
2020 IBM_HANDLE_INIT(sfan);
2021
2022 proc_dir = proc_mkdir(IBM_DIR, acpi_root_dir);
2023 if (!proc_dir) {
2024 printk(IBM_ERR "unable to create proc dir %s", IBM_DIR);
2025 return -ENODEV;
2026 }
2027 proc_dir->owner = THIS_MODULE;
2028
2029 for (i = 0; i < ARRAY_SIZE(ibms); i++) {
2030 ret = ibm_init(&ibms[i]);
2031 if (ret >= 0 && *ibms[i].param)
2032 ret = ibms[i].write(ibms[i].param);
2033 if (ret < 0) {
2034 acpi_ibm_exit();
2035 return ret;
2036 }
2037 }
2038
2039 return 0;
2040 }
2041
2042 module_init(acpi_ibm_init);
2043 module_exit(acpi_ibm_exit);
Linux 2.6 ibm-acpi/thinkpad-acpi driver git tree