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ACPI: ibm-acpi: trivial Lindent cleanups
[linux-2.6/linux-acpi-2.6/ibm-acpi-2.6.git] / drivers / acpi / ibm_acpi.c
blob49ea61ca2487aea420190886c531405b4a891af1
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 <linux/backlight.h>
82 #include <asm/uaccess.h>
83
84 #include <acpi/acpi_drivers.h>
85 #include <acpi/acnamesp.h>
86
87 #define IBM_NAME "ibm"
88 #define IBM_DESC "IBM ThinkPad ACPI Extras"
89 #define IBM_FILE "ibm_acpi"
90 #define IBM_URL "http://ibm-acpi.sf.net/"
91
92 MODULE_AUTHOR("Borislav Deianov");
93 MODULE_DESCRIPTION(IBM_DESC);
94 MODULE_VERSION(IBM_VERSION);
95 MODULE_LICENSE("GPL");
96
97 #define IBM_DIR IBM_NAME
98
99 #define IBM_LOG IBM_FILE ": "
100 #define IBM_ERR KERN_ERR IBM_LOG
101 #define IBM_NOTICE KERN_NOTICE IBM_LOG
102 #define IBM_INFO KERN_INFO IBM_LOG
103 #define IBM_DEBUG KERN_DEBUG IBM_LOG
104
105 #define IBM_MAX_ACPI_ARGS 3
106
107 #define __unused __attribute__ ((unused))
108
109 static int experimental;
110 module_param(experimental, int, 0);
111
112 static acpi_handle root_handle = NULL;
113
114 #define IBM_HANDLE(object, parent, paths...) \
115 static acpi_handle object##_handle; \
116 static acpi_handle *object##_parent = &parent##_handle; \
117 static char *object##_path; \
118 static char *object##_paths[] = { paths }
119
120 /*
121 * The following models are supported to various degrees:
122 *
123 * 570, 600e, 600x, 770e, 770x
124 * A20m, A21e, A21m, A21p, A22p, A30, A30p, A31, A31p
125 * G40, G41
126 * R30, R31, R32, R40, R40e, R50, R50e, R50p, R51
127 * T20, T21, T22, T23, T30, T40, T40p, T41, T41p, T42, T42p, T43
128 * X20, X21, X22, X23, X24, X30, X31, X40
129 *
130 * The following models have no supported features:
131 *
132 * 240, 240x, i1400
133 *
134 * Still missing DSDTs for the following models:
135 *
136 * A20p, A22e, A22m
137 * R52
138 * S31
139 * T43p
140 */
141
142 IBM_HANDLE(ec, root, "\\_SB.PCI0.ISA.EC0", /* 240, 240x */
143 "\\_SB.PCI.ISA.EC", /* 570 */
144 "\\_SB.PCI0.ISA0.EC0", /* 600e/x, 770e, 770x */
145 "\\_SB.PCI0.ISA.EC", /* A21e, A2xm/p, T20-22, X20-21 */
146 "\\_SB.PCI0.AD4S.EC0", /* i1400, R30 */
147 "\\_SB.PCI0.ICH3.EC0", /* R31 */
148 "\\_SB.PCI0.LPC.EC", /* all others */
149 );
150
151 IBM_HANDLE(vid, root, "\\_SB.PCI.AGP.VGA", /* 570 */
152 "\\_SB.PCI0.AGP0.VID0", /* 600e/x, 770x */
153 "\\_SB.PCI0.VID0", /* 770e */
154 "\\_SB.PCI0.VID", /* A21e, G4x, R50e, X30, X40 */
155 "\\_SB.PCI0.AGP.VID", /* all others */
156 ); /* R30, R31 */
157
158 IBM_HANDLE(vid2, root, "\\_SB.PCI0.AGPB.VID"); /* G41 */
159
160 IBM_HANDLE(cmos, root, "\\UCMS", /* R50, R50e, R50p, R51, T4x, X31, X40 */
161 "\\CMOS", /* A3x, G4x, R32, T23, T30, X22-24, X30 */
162 "\\CMS", /* R40, R40e */
163 ); /* all others */
164 #ifdef CONFIG_ACPI_IBM_DOCK
165 IBM_HANDLE(dock, root, "\\_SB.GDCK", /* X30, X31, X40 */
166 "\\_SB.PCI0.DOCK", /* 600e/x,770e,770x,A2xm/p,T20-22,X20-21 */
167 "\\_SB.PCI0.PCI1.DOCK", /* all others */
168 "\\_SB.PCI.ISA.SLCE", /* 570 */
169 ); /* A21e,G4x,R30,R31,R32,R40,R40e,R50e */
170 #endif
171 IBM_HANDLE(bay, root, "\\_SB.PCI.IDE.SECN.MAST", /* 570 */
172 "\\_SB.PCI0.IDE0.IDES.IDSM", /* 600e/x, 770e, 770x */
173 "\\_SB.PCI0.IDE0.SCND.MSTR", /* all others */
174 ); /* A21e, R30, R31 */
175
176 IBM_HANDLE(bay_ej, bay, "_EJ3", /* 600e/x, A2xm/p, A3x */
177 "_EJ0", /* all others */
178 ); /* 570,A21e,G4x,R30,R31,R32,R40e,R50e */
179
180 IBM_HANDLE(bay2, root, "\\_SB.PCI0.IDE0.PRIM.SLAV", /* A3x, R32 */
181 "\\_SB.PCI0.IDE0.IDEP.IDPS", /* 600e/x, 770e, 770x */
182 ); /* all others */
183
184 IBM_HANDLE(bay2_ej, bay2, "_EJ3", /* 600e/x, 770e, A3x */
185 "_EJ0", /* 770x */
186 ); /* all others */
187
188 /* don't list other alternatives as we install a notify handler on the 570 */
189 IBM_HANDLE(pci, root, "\\_SB.PCI"); /* 570 */
190
191 IBM_HANDLE(hkey, ec, "\\_SB.HKEY", /* 600e/x, 770e, 770x */
192 "^HKEY", /* R30, R31 */
193 "HKEY", /* all others */
194 ); /* 570 */
195
196 IBM_HANDLE(lght, root, "\\LGHT"); /* A21e, A2xm/p, T20-22, X20-21 */
197 IBM_HANDLE(ledb, ec, "LEDB"); /* G4x */
198
199 IBM_HANDLE(led, ec, "SLED", /* 570 */
200 "SYSL", /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20-21 */
201 "LED", /* all others */
202 ); /* R30, R31 */
203
204 IBM_HANDLE(beep, ec, "BEEP"); /* all except R30, R31 */
205 IBM_HANDLE(ecrd, ec, "ECRD"); /* 570 */
206 IBM_HANDLE(ecwr, ec, "ECWR"); /* 570 */
207 IBM_HANDLE(fans, ec, "FANS"); /* X31, X40 */
208
209 IBM_HANDLE(gfan, ec, "GFAN", /* 570 */
210 "\\FSPD", /* 600e/x, 770e, 770x */
211 ); /* all others */
212
213 IBM_HANDLE(sfan, ec, "SFAN", /* 570 */
214 "JFNS", /* 770x-JL */
215 ); /* all others */
216
217 #define IBM_HKEY_HID "IBM0068"
218 #define IBM_PCI_HID "PNP0A03"
219
220 struct ibm_struct {
221 char *name;
222 char param[32];
223
224 char *hid;
225 struct acpi_driver *driver;
226
227 int (*init) (void);
228 int (*read) (char *);
229 int (*write) (char *);
230 void (*exit) (void);
231
232 void (*notify) (struct ibm_struct *, u32);
233 acpi_handle *handle;
234 int type;
235 struct acpi_device *device;
236
237 int driver_registered;
238 int proc_created;
239 int init_called;
240 int notify_installed;
241
242 int experimental;
243 };
244
245 static struct proc_dir_entry *proc_dir = NULL;
246
247 static struct backlight_device *ibm_backlight_device;
248
249 #define onoff(status,bit) ((status) & (1 << (bit)) ? "on" : "off")
250 #define enabled(status,bit) ((status) & (1 << (bit)) ? "enabled" : "disabled")
251 #define strlencmp(a,b) (strncmp((a), (b), strlen(b)))
252
253 static int acpi_evalf(acpi_handle handle,
254 void *res, char *method, char *fmt, ...)
255 {
256 char *fmt0 = fmt;
257 struct acpi_object_list params;
258 union acpi_object in_objs[IBM_MAX_ACPI_ARGS];
259 struct acpi_buffer result, *resultp;
260 union acpi_object out_obj;
261 acpi_status status;
262 va_list ap;
263 char res_type;
264 int success;
265 int quiet;
266
267 if (!*fmt) {
268 printk(IBM_ERR "acpi_evalf() called with empty format\n");
269 return 0;
270 }
271
272 if (*fmt == 'q') {
273 quiet = 1;
274 fmt++;
275 } else
276 quiet = 0;
277
278 res_type = *(fmt++);
279
280 params.count = 0;
281 params.pointer = &in_objs[0];
282
283 va_start(ap, fmt);
284 while (*fmt) {
285 char c = *(fmt++);
286 switch (c) {
287 case 'd': /* int */
288 in_objs[params.count].integer.value = va_arg(ap, int);
289 in_objs[params.count++].type = ACPI_TYPE_INTEGER;
290 break;
291 /* add more types as needed */
292 default:
293 printk(IBM_ERR "acpi_evalf() called "
294 "with invalid format character '%c'\n", c);
295 return 0;
296 }
297 }
298 va_end(ap);
299
300 if (res_type != 'v') {
301 result.length = sizeof(out_obj);
302 result.pointer = &out_obj;
303 resultp = &result;
304 } else
305 resultp = NULL;
306
307 status = acpi_evaluate_object(handle, method, &params, resultp);
308
309 switch (res_type) {
310 case 'd': /* int */
311 if (res)
312 *(int *)res = out_obj.integer.value;
313 success = status == AE_OK && out_obj.type == ACPI_TYPE_INTEGER;
314 break;
315 case 'v': /* void */
316 success = status == AE_OK;
317 break;
318 /* add more types as needed */
319 default:
320 printk(IBM_ERR "acpi_evalf() called "
321 "with invalid format character '%c'\n", res_type);
322 return 0;
323 }
324
325 if (!success && !quiet)
326 printk(IBM_ERR "acpi_evalf(%s, %s, ...) failed: %d\n",
327 method, fmt0, status);
328
329 return success;
330 }
331
332 static void __unused acpi_print_int(acpi_handle handle, char *method)
333 {
334 int i;
335
336 if (acpi_evalf(handle, &i, method, "d"))
337 printk(IBM_INFO "%s = 0x%x\n", method, i);
338 else
339 printk(IBM_ERR "error calling %s\n", method);
340 }
341
342 static char *next_cmd(char **cmds)
343 {
344 char *start = *cmds;
345 char *end;
346
347 while ((end = strchr(start, ',')) && end == start)
348 start = end + 1;
349
350 if (!end)
351 return NULL;
352
353 *end = 0;
354 *cmds = end + 1;
355 return start;
356 }
357
358 static int driver_init(void)
359 {
360 printk(IBM_INFO "%s v%s\n", IBM_DESC, IBM_VERSION);
361 printk(IBM_INFO "%s\n", IBM_URL);
362
363 return 0;
364 }
365
366 static int driver_read(char *p)
367 {
368 int len = 0;
369
370 len += sprintf(p + len, "driver:\t\t%s\n", IBM_DESC);
371 len += sprintf(p + len, "version:\t%s\n", IBM_VERSION);
372
373 return len;
374 }
375
376 static int hotkey_supported;
377 static int hotkey_mask_supported;
378 static int hotkey_orig_status;
379 static int hotkey_orig_mask;
380
381 static int hotkey_get(int *status, int *mask)
382 {
383 if (!acpi_evalf(hkey_handle, status, "DHKC", "d"))
384 return 0;
385
386 if (hotkey_mask_supported)
387 if (!acpi_evalf(hkey_handle, mask, "DHKN", "d"))
388 return 0;
389
390 return 1;
391 }
392
393 static int hotkey_set(int status, int mask)
394 {
395 int i;
396
397 if (!acpi_evalf(hkey_handle, NULL, "MHKC", "vd", status))
398 return 0;
399
400 if (hotkey_mask_supported)
401 for (i = 0; i < 32; i++) {
402 int bit = ((1 << i) & mask) != 0;
403 if (!acpi_evalf(hkey_handle,
404 NULL, "MHKM", "vdd", i + 1, bit))
405 return 0;
406 }
407
408 return 1;
409 }
410
411 static int hotkey_init(void)
412 {
413 /* hotkey not supported on 570 */
414 hotkey_supported = hkey_handle != NULL;
415
416 if (hotkey_supported) {
417 /* mask not supported on 570, 600e/x, 770e, 770x, A21e, A2xm/p,
418 A30, R30, R31, T20-22, X20-21, X22-24 */
419 hotkey_mask_supported =
420 acpi_evalf(hkey_handle, NULL, "DHKN", "qv");
421
422 if (!hotkey_get(&hotkey_orig_status, &hotkey_orig_mask))
423 return -ENODEV;
424 }
425
426 return 0;
427 }
428
429 static int hotkey_read(char *p)
430 {
431 int status, mask;
432 int len = 0;
433
434 if (!hotkey_supported) {
435 len += sprintf(p + len, "status:\t\tnot supported\n");
436 return len;
437 }
438
439 if (!hotkey_get(&status, &mask))
440 return -EIO;
441
442 len += sprintf(p + len, "status:\t\t%s\n", enabled(status, 0));
443 if (hotkey_mask_supported) {
444 len += sprintf(p + len, "mask:\t\t0x%04x\n", mask);
445 len += sprintf(p + len,
446 "commands:\tenable, disable, reset, <mask>\n");
447 } else {
448 len += sprintf(p + len, "mask:\t\tnot supported\n");
449 len += sprintf(p + len, "commands:\tenable, disable, reset\n");
450 }
451
452 return len;
453 }
454
455 static int hotkey_write(char *buf)
456 {
457 int status, mask;
458 char *cmd;
459 int do_cmd = 0;
460
461 if (!hotkey_supported)
462 return -ENODEV;
463
464 if (!hotkey_get(&status, &mask))
465 return -EIO;
466
467 while ((cmd = next_cmd(&buf))) {
468 if (strlencmp(cmd, "enable") == 0) {
469 status = 1;
470 } else if (strlencmp(cmd, "disable") == 0) {
471 status = 0;
472 } else if (strlencmp(cmd, "reset") == 0) {
473 status = hotkey_orig_status;
474 mask = hotkey_orig_mask;
475 } else if (sscanf(cmd, "0x%x", &mask) == 1) {
476 /* mask set */
477 } else if (sscanf(cmd, "%x", &mask) == 1) {
478 /* mask set */
479 } else
480 return -EINVAL;
481 do_cmd = 1;
482 }
483
484 if (do_cmd && !hotkey_set(status, mask))
485 return -EIO;
486
487 return 0;
488 }
489
490 static void hotkey_exit(void)
491 {
492 if (hotkey_supported)
493 hotkey_set(hotkey_orig_status, hotkey_orig_mask);
494 }
495
496 static void hotkey_notify(struct ibm_struct *ibm, u32 event)
497 {
498 int hkey;
499
500 if (acpi_evalf(hkey_handle, &hkey, "MHKP", "d"))
501 acpi_bus_generate_event(ibm->device, event, hkey);
502 else {
503 printk(IBM_ERR "unknown hotkey event %d\n", event);
504 acpi_bus_generate_event(ibm->device, event, 0);
505 }
506 }
507
508 static int bluetooth_supported;
509
510 static int bluetooth_init(void)
511 {
512 /* bluetooth not supported on 570, 600e/x, 770e, 770x, A21e, A2xm/p,
513 G4x, R30, R31, R40e, R50e, T20-22, X20-21 */
514 bluetooth_supported = hkey_handle &&
515 acpi_evalf(hkey_handle, NULL, "GBDC", "qv");
516
517 return 0;
518 }
519
520 static int bluetooth_status(void)
521 {
522 int status;
523
524 if (!bluetooth_supported ||
525 !acpi_evalf(hkey_handle, &status, "GBDC", "d"))
526 status = 0;
527
528 return status;
529 }
530
531 static int bluetooth_read(char *p)
532 {
533 int len = 0;
534 int status = bluetooth_status();
535
536 if (!bluetooth_supported)
537 len += sprintf(p + len, "status:\t\tnot supported\n");
538 else if (!(status & 1))
539 len += sprintf(p + len, "status:\t\tnot installed\n");
540 else {
541 len += sprintf(p + len, "status:\t\t%s\n", enabled(status, 1));
542 len += sprintf(p + len, "commands:\tenable, disable\n");
543 }
544
545 return len;
546 }
547
548 static int bluetooth_write(char *buf)
549 {
550 int status = bluetooth_status();
551 char *cmd;
552 int do_cmd = 0;
553
554 if (!bluetooth_supported)
555 return -ENODEV;
556
557 while ((cmd = next_cmd(&buf))) {
558 if (strlencmp(cmd, "enable") == 0) {
559 status |= 2;
560 } else if (strlencmp(cmd, "disable") == 0) {
561 status &= ~2;
562 } else
563 return -EINVAL;
564 do_cmd = 1;
565 }
566
567 if (do_cmd && !acpi_evalf(hkey_handle, NULL, "SBDC", "vd", status))
568 return -EIO;
569
570 return 0;
571 }
572
573 static int wan_supported;
574
575 static int wan_init(void)
576 {
577 wan_supported = hkey_handle &&
578 acpi_evalf(hkey_handle, NULL, "GWAN", "qv");
579
580 return 0;
581 }
582
583 static int wan_status(void)
584 {
585 int status;
586
587 if (!wan_supported || !acpi_evalf(hkey_handle, &status, "GWAN", "d"))
588 status = 0;
589
590 return status;
591 }
592
593 static int wan_read(char *p)
594 {
595 int len = 0;
596 int status = wan_status();
597
598 if (!wan_supported)
599 len += sprintf(p + len, "status:\t\tnot supported\n");
600 else if (!(status & 1))
601 len += sprintf(p + len, "status:\t\tnot installed\n");
602 else {
603 len += sprintf(p + len, "status:\t\t%s\n", enabled(status, 1));
604 len += sprintf(p + len, "commands:\tenable, disable\n");
605 }
606
607 return len;
608 }
609
610 static int wan_write(char *buf)
611 {
612 int status = wan_status();
613 char *cmd;
614 int do_cmd = 0;
615
616 if (!wan_supported)
617 return -ENODEV;
618
619 while ((cmd = next_cmd(&buf))) {
620 if (strlencmp(cmd, "enable") == 0) {
621 status |= 2;
622 } else if (strlencmp(cmd, "disable") == 0) {
623 status &= ~2;
624 } else
625 return -EINVAL;
626 do_cmd = 1;
627 }
628
629 if (do_cmd && !acpi_evalf(hkey_handle, NULL, "SWAN", "vd", status))
630 return -EIO;
631
632 return 0;
633 }
634
635 static int video_supported;
636 static int video_orig_autosw;
637
638 #define VIDEO_570 1
639 #define VIDEO_770 2
640 #define VIDEO_NEW 3
641
642 static int video_init(void)
643 {
644 int ivga;
645
646 if (vid2_handle && acpi_evalf(NULL, &ivga, "\\IVGA", "d") && ivga)
647 /* G41, assume IVGA doesn't change */
648 vid_handle = vid2_handle;
649
650 if (!vid_handle)
651 /* video switching not supported on R30, R31 */
652 video_supported = 0;
653 else if (acpi_evalf(vid_handle, &video_orig_autosw, "SWIT", "qd"))
654 /* 570 */
655 video_supported = VIDEO_570;
656 else if (acpi_evalf(vid_handle, &video_orig_autosw, "^VADL", "qd"))
657 /* 600e/x, 770e, 770x */
658 video_supported = VIDEO_770;
659 else
660 /* all others */
661 video_supported = VIDEO_NEW;
662
663 return 0;
664 }
665
666 static int video_status(void)
667 {
668 int status = 0;
669 int i;
670
671 if (video_supported == VIDEO_570) {
672 if (acpi_evalf(NULL, &i, "\\_SB.PHS", "dd", 0x87))
673 status = i & 3;
674 } else if (video_supported == VIDEO_770) {
675 if (acpi_evalf(NULL, &i, "\\VCDL", "d"))
676 status |= 0x01 * i;
677 if (acpi_evalf(NULL, &i, "\\VCDC", "d"))
678 status |= 0x02 * i;
679 } else if (video_supported == VIDEO_NEW) {
680 acpi_evalf(NULL, NULL, "\\VUPS", "vd", 1);
681 if (acpi_evalf(NULL, &i, "\\VCDC", "d"))
682 status |= 0x02 * i;
683
684 acpi_evalf(NULL, NULL, "\\VUPS", "vd", 0);
685 if (acpi_evalf(NULL, &i, "\\VCDL", "d"))
686 status |= 0x01 * i;
687 if (acpi_evalf(NULL, &i, "\\VCDD", "d"))
688 status |= 0x08 * i;
689 }
690
691 return status;
692 }
693
694 static int video_autosw(void)
695 {
696 int autosw = 0;
697
698 if (video_supported == VIDEO_570)
699 acpi_evalf(vid_handle, &autosw, "SWIT", "d");
700 else if (video_supported == VIDEO_770 || video_supported == VIDEO_NEW)
701 acpi_evalf(vid_handle, &autosw, "^VDEE", "d");
702
703 return autosw & 1;
704 }
705
706 static int video_read(char *p)
707 {
708 int status = video_status();
709 int autosw = video_autosw();
710 int len = 0;
711
712 if (!video_supported) {
713 len += sprintf(p + len, "status:\t\tnot supported\n");
714 return len;
715 }
716
717 len += sprintf(p + len, "status:\t\tsupported\n");
718 len += sprintf(p + len, "lcd:\t\t%s\n", enabled(status, 0));
719 len += sprintf(p + len, "crt:\t\t%s\n", enabled(status, 1));
720 if (video_supported == VIDEO_NEW)
721 len += sprintf(p + len, "dvi:\t\t%s\n", enabled(status, 3));
722 len += sprintf(p + len, "auto:\t\t%s\n", enabled(autosw, 0));
723 len += sprintf(p + len, "commands:\tlcd_enable, lcd_disable\n");
724 len += sprintf(p + len, "commands:\tcrt_enable, crt_disable\n");
725 if (video_supported == VIDEO_NEW)
726 len += sprintf(p + len, "commands:\tdvi_enable, dvi_disable\n");
727 len += sprintf(p + len, "commands:\tauto_enable, auto_disable\n");
728 len += sprintf(p + len, "commands:\tvideo_switch, expand_toggle\n");
729
730 return len;
731 }
732
733 static int video_switch(void)
734 {
735 int autosw = video_autosw();
736 int ret;
737
738 if (!acpi_evalf(vid_handle, NULL, "_DOS", "vd", 1))
739 return -EIO;
740 ret = video_supported == VIDEO_570 ?
741 acpi_evalf(ec_handle, NULL, "_Q16", "v") :
742 acpi_evalf(vid_handle, NULL, "VSWT", "v");
743 acpi_evalf(vid_handle, NULL, "_DOS", "vd", autosw);
744
745 return ret;
746 }
747
748 static int video_expand(void)
749 {
750 if (video_supported == VIDEO_570)
751 return acpi_evalf(ec_handle, NULL, "_Q17", "v");
752 else if (video_supported == VIDEO_770)
753 return acpi_evalf(vid_handle, NULL, "VEXP", "v");
754 else
755 return acpi_evalf(NULL, NULL, "\\VEXP", "v");
756 }
757
758 static int video_switch2(int status)
759 {
760 int ret;
761
762 if (video_supported == VIDEO_570) {
763 ret = acpi_evalf(NULL, NULL,
764 "\\_SB.PHS2", "vdd", 0x8b, status | 0x80);
765 } else if (video_supported == VIDEO_770) {
766 int autosw = video_autosw();
767 if (!acpi_evalf(vid_handle, NULL, "_DOS", "vd", 1))
768 return -EIO;
769
770 ret = acpi_evalf(vid_handle, NULL,
771 "ASWT", "vdd", status * 0x100, 0);
772
773 acpi_evalf(vid_handle, NULL, "_DOS", "vd", autosw);
774 } else {
775 ret = acpi_evalf(NULL, NULL, "\\VUPS", "vd", 0x80) &&
776 acpi_evalf(NULL, NULL, "\\VSDS", "vdd", status, 1);
777 }
778
779 return ret;
780 }
781
782 static int video_write(char *buf)
783 {
784 char *cmd;
785 int enable, disable, status;
786
787 if (!video_supported)
788 return -ENODEV;
789
790 enable = disable = 0;
791
792 while ((cmd = next_cmd(&buf))) {
793 if (strlencmp(cmd, "lcd_enable") == 0) {
794 enable |= 0x01;
795 } else if (strlencmp(cmd, "lcd_disable") == 0) {
796 disable |= 0x01;
797 } else if (strlencmp(cmd, "crt_enable") == 0) {
798 enable |= 0x02;
799 } else if (strlencmp(cmd, "crt_disable") == 0) {
800 disable |= 0x02;
801 } else if (video_supported == VIDEO_NEW &&
802 strlencmp(cmd, "dvi_enable") == 0) {
803 enable |= 0x08;
804 } else if (video_supported == VIDEO_NEW &&
805 strlencmp(cmd, "dvi_disable") == 0) {
806 disable |= 0x08;
807 } else if (strlencmp(cmd, "auto_enable") == 0) {
808 if (!acpi_evalf(vid_handle, NULL, "_DOS", "vd", 1))
809 return -EIO;
810 } else if (strlencmp(cmd, "auto_disable") == 0) {
811 if (!acpi_evalf(vid_handle, NULL, "_DOS", "vd", 0))
812 return -EIO;
813 } else if (strlencmp(cmd, "video_switch") == 0) {
814 if (!video_switch())
815 return -EIO;
816 } else if (strlencmp(cmd, "expand_toggle") == 0) {
817 if (!video_expand())
818 return -EIO;
819 } else
820 return -EINVAL;
821 }
822
823 if (enable || disable) {
824 status = (video_status() & 0x0f & ~disable) | enable;
825 if (!video_switch2(status))
826 return -EIO;
827 }
828
829 return 0;
830 }
831
832 static void video_exit(void)
833 {
834 acpi_evalf(vid_handle, NULL, "_DOS", "vd", video_orig_autosw);
835 }
836
837 static int light_supported;
838 static int light_status_supported;
839
840 static int light_init(void)
841 {
842 /* light not supported on 570, 600e/x, 770e, 770x, G4x, R30, R31 */
843 light_supported = (cmos_handle || lght_handle) && !ledb_handle;
844
845 if (light_supported)
846 /* light status not supported on
847 570, 600e/x, 770e, 770x, G4x, R30, R31, R32, X20 */
848 light_status_supported = acpi_evalf(ec_handle, NULL,
849 "KBLT", "qv");
850
851 return 0;
852 }
853
854 static int light_read(char *p)
855 {
856 int len = 0;
857 int status = 0;
858
859 if (!light_supported) {
860 len += sprintf(p + len, "status:\t\tnot supported\n");
861 } else if (!light_status_supported) {
862 len += sprintf(p + len, "status:\t\tunknown\n");
863 len += sprintf(p + len, "commands:\ton, off\n");
864 } else {
865 if (!acpi_evalf(ec_handle, &status, "KBLT", "d"))
866 return -EIO;
867 len += sprintf(p + len, "status:\t\t%s\n", onoff(status, 0));
868 len += sprintf(p + len, "commands:\ton, off\n");
869 }
870
871 return len;
872 }
873
874 static int light_write(char *buf)
875 {
876 int cmos_cmd, lght_cmd;
877 char *cmd;
878 int success;
879
880 if (!light_supported)
881 return -ENODEV;
882
883 while ((cmd = next_cmd(&buf))) {
884 if (strlencmp(cmd, "on") == 0) {
885 cmos_cmd = 0x0c;
886 lght_cmd = 1;
887 } else if (strlencmp(cmd, "off") == 0) {
888 cmos_cmd = 0x0d;
889 lght_cmd = 0;
890 } else
891 return -EINVAL;
892
893 success = cmos_handle ?
894 acpi_evalf(cmos_handle, NULL, NULL, "vd", cmos_cmd) :
895 acpi_evalf(lght_handle, NULL, NULL, "vd", lght_cmd);
896 if (!success)
897 return -EIO;
898 }
899
900 return 0;
901 }
902
903 static int _sta(acpi_handle handle)
904 {
905 int status;
906
907 if (!handle || !acpi_evalf(handle, &status, "_STA", "d"))
908 status = 0;
909
910 return status;
911 }
912
913 #ifdef CONFIG_ACPI_IBM_DOCK
914 #define dock_docked() (_sta(dock_handle) & 1)
915
916 static int dock_read(char *p)
917 {
918 int len = 0;
919 int docked = dock_docked();
920
921 if (!dock_handle)
922 len += sprintf(p + len, "status:\t\tnot supported\n");
923 else if (!docked)
924 len += sprintf(p + len, "status:\t\tundocked\n");
925 else {
926 len += sprintf(p + len, "status:\t\tdocked\n");
927 len += sprintf(p + len, "commands:\tdock, undock\n");
928 }
929
930 return len;
931 }
932
933 static int dock_write(char *buf)
934 {
935 char *cmd;
936
937 if (!dock_docked())
938 return -ENODEV;
939
940 while ((cmd = next_cmd(&buf))) {
941 if (strlencmp(cmd, "undock") == 0) {
942 if (!acpi_evalf(dock_handle, NULL, "_DCK", "vd", 0) ||
943 !acpi_evalf(dock_handle, NULL, "_EJ0", "vd", 1))
944 return -EIO;
945 } else if (strlencmp(cmd, "dock") == 0) {
946 if (!acpi_evalf(dock_handle, NULL, "_DCK", "vd", 1))
947 return -EIO;
948 } else
949 return -EINVAL;
950 }
951
952 return 0;
953 }
954
955 static void dock_notify(struct ibm_struct *ibm, u32 event)
956 {
957 int docked = dock_docked();
958 int pci = ibm->hid && strstr(ibm->hid, IBM_PCI_HID);
959
960 if (event == 1 && !pci) /* 570 */
961 acpi_bus_generate_event(ibm->device, event, 1); /* button */
962 else if (event == 1 && pci) /* 570 */
963 acpi_bus_generate_event(ibm->device, event, 3); /* dock */
964 else if (event == 3 && docked)
965 acpi_bus_generate_event(ibm->device, event, 1); /* button */
966 else if (event == 3 && !docked)
967 acpi_bus_generate_event(ibm->device, event, 2); /* undock */
968 else if (event == 0 && docked)
969 acpi_bus_generate_event(ibm->device, event, 3); /* dock */
970 else {
971 printk(IBM_ERR "unknown dock event %d, status %d\n",
972 event, _sta(dock_handle));
973 acpi_bus_generate_event(ibm->device, event, 0); /* unknown */
974 }
975 }
976 #endif
977
978 static int bay_status_supported;
979 static int bay_status2_supported;
980 static int bay_eject_supported;
981 static int bay_eject2_supported;
982
983 static int bay_init(void)
984 {
985 bay_status_supported = bay_handle &&
986 acpi_evalf(bay_handle, NULL, "_STA", "qv");
987 bay_status2_supported = bay2_handle &&
988 acpi_evalf(bay2_handle, NULL, "_STA", "qv");
989
990 bay_eject_supported = bay_handle && bay_ej_handle &&
991 (strlencmp(bay_ej_path, "_EJ0") == 0 || experimental);
992 bay_eject2_supported = bay2_handle && bay2_ej_handle &&
993 (strlencmp(bay2_ej_path, "_EJ0") == 0 || experimental);
994
995 return 0;
996 }
997
998 #define bay_occupied(b) (_sta(b##_handle) & 1)
999
1000 static int bay_read(char *p)
1001 {
1002 int len = 0;
1003 int occupied = bay_occupied(bay);
1004 int occupied2 = bay_occupied(bay2);
1005 int eject, eject2;
1006
1007 len += sprintf(p + len, "status:\t\t%s\n", bay_status_supported ?
1008 (occupied ? "occupied" : "unoccupied") :
1009 "not supported");
1010 if (bay_status2_supported)
1011 len += sprintf(p + len, "status2:\t%s\n", occupied2 ?
1012 "occupied" : "unoccupied");
1013
1014 eject = bay_eject_supported && occupied;
1015 eject2 = bay_eject2_supported && occupied2;
1016
1017 if (eject && eject2)
1018 len += sprintf(p + len, "commands:\teject, eject2\n");
1019 else if (eject)
1020 len += sprintf(p + len, "commands:\teject\n");
1021 else if (eject2)
1022 len += sprintf(p + len, "commands:\teject2\n");
1023
1024 return len;
1025 }
1026
1027 static int bay_write(char *buf)
1028 {
1029 char *cmd;
1030
1031 if (!bay_eject_supported && !bay_eject2_supported)
1032 return -ENODEV;
1033
1034 while ((cmd = next_cmd(&buf))) {
1035 if (bay_eject_supported && strlencmp(cmd, "eject") == 0) {
1036 if (!acpi_evalf(bay_ej_handle, NULL, NULL, "vd", 1))
1037 return -EIO;
1038 } else if (bay_eject2_supported &&
1039 strlencmp(cmd, "eject2") == 0) {
1040 if (!acpi_evalf(bay2_ej_handle, NULL, NULL, "vd", 1))
1041 return -EIO;
1042 } else
1043 return -EINVAL;
1044 }
1045
1046 return 0;
1047 }
1048
1049 static void bay_notify(struct ibm_struct *ibm, u32 event)
1050 {
1051 acpi_bus_generate_event(ibm->device, event, 0);
1052 }
1053
1054 static int cmos_read(char *p)
1055 {
1056 int len = 0;
1057
1058 /* cmos not supported on 570, 600e/x, 770e, 770x, A21e, A2xm/p,
1059 R30, R31, T20-22, X20-21 */
1060 if (!cmos_handle)
1061 len += sprintf(p + len, "status:\t\tnot supported\n");
1062 else {
1063 len += sprintf(p + len, "status:\t\tsupported\n");
1064 len += sprintf(p + len, "commands:\t<cmd> (<cmd> is 0-21)\n");
1065 }
1066
1067 return len;
1068 }
1069
1070 static int cmos_eval(int cmos_cmd)
1071 {
1072 if (cmos_handle)
1073 return acpi_evalf(cmos_handle, NULL, NULL, "vd", cmos_cmd);
1074 else
1075 return 1;
1076 }
1077
1078 static int cmos_write(char *buf)
1079 {
1080 char *cmd;
1081 int cmos_cmd;
1082
1083 if (!cmos_handle)
1084 return -EINVAL;
1085
1086 while ((cmd = next_cmd(&buf))) {
1087 if (sscanf(cmd, "%u", &cmos_cmd) == 1 &&
1088 cmos_cmd >= 0 && cmos_cmd <= 21) {
1089 /* cmos_cmd set */
1090 } else
1091 return -EINVAL;
1092
1093 if (!cmos_eval(cmos_cmd))
1094 return -EIO;
1095 }
1096
1097 return 0;
1098 }
1099
1100 static int led_supported;
1101
1102 #define LED_570 1
1103 #define LED_OLD 2
1104 #define LED_NEW 3
1105
1106 static int led_init(void)
1107 {
1108 if (!led_handle)
1109 /* led not supported on R30, R31 */
1110 led_supported = 0;
1111 else if (strlencmp(led_path, "SLED") == 0)
1112 /* 570 */
1113 led_supported = LED_570;
1114 else if (strlencmp(led_path, "SYSL") == 0)
1115 /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20-21 */
1116 led_supported = LED_OLD;
1117 else
1118 /* all others */
1119 led_supported = LED_NEW;
1120
1121 return 0;
1122 }
1123
1124 #define led_status(s) ((s) == 0 ? "off" : ((s) == 1 ? "on" : "blinking"))
1125
1126 static int led_read(char *p)
1127 {
1128 int len = 0;
1129
1130 if (!led_supported) {
1131 len += sprintf(p + len, "status:\t\tnot supported\n");
1132 return len;
1133 }
1134 len += sprintf(p + len, "status:\t\tsupported\n");
1135
1136 if (led_supported == LED_570) {
1137 /* 570 */
1138 int i, status;
1139 for (i = 0; i < 8; i++) {
1140 if (!acpi_evalf(ec_handle,
1141 &status, "GLED", "dd", 1 << i))
1142 return -EIO;
1143 len += sprintf(p + len, "%d:\t\t%s\n",
1144 i, led_status(status));
1145 }
1146 }
1147
1148 len += sprintf(p + len, "commands:\t"
1149 "<led> on, <led> off, <led> blink (<led> is 0-7)\n");
1150
1151 return len;
1152 }
1153
1154 /* off, on, blink */
1155 static const int led_sled_arg1[] = { 0, 1, 3 };
1156 static const int led_exp_hlbl[] = { 0, 0, 1 }; /* led# * */
1157 static const int led_exp_hlcl[] = { 0, 1, 1 }; /* led# * */
1158 static const int led_led_arg1[] = { 0, 0x80, 0xc0 };
1159
1160 #define EC_HLCL 0x0c
1161 #define EC_HLBL 0x0d
1162 #define EC_HLMS 0x0e
1163
1164 static int led_write(char *buf)
1165 {
1166 char *cmd;
1167 int led, ind, ret;
1168
1169 if (!led_supported)
1170 return -ENODEV;
1171
1172 while ((cmd = next_cmd(&buf))) {
1173 if (sscanf(cmd, "%d", &led) != 1 || led < 0 || led > 7)
1174 return -EINVAL;
1175
1176 if (strstr(cmd, "off")) {
1177 ind = 0;
1178 } else if (strstr(cmd, "on")) {
1179 ind = 1;
1180 } else if (strstr(cmd, "blink")) {
1181 ind = 2;
1182 } else
1183 return -EINVAL;
1184
1185 if (led_supported == LED_570) {
1186 /* 570 */
1187 led = 1 << led;
1188 if (!acpi_evalf(led_handle, NULL, NULL, "vdd",
1189 led, led_sled_arg1[ind]))
1190 return -EIO;
1191 } else if (led_supported == LED_OLD) {
1192 /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20 */
1193 led = 1 << led;
1194 ret = ec_write(EC_HLMS, led);
1195 if (ret >= 0)
1196 ret =
1197 ec_write(EC_HLBL, led * led_exp_hlbl[ind]);
1198 if (ret >= 0)
1199 ret =
1200 ec_write(EC_HLCL, led * led_exp_hlcl[ind]);
1201 if (ret < 0)
1202 return ret;
1203 } else {
1204 /* all others */
1205 if (!acpi_evalf(led_handle, NULL, NULL, "vdd",
1206 led, led_led_arg1[ind]))
1207 return -EIO;
1208 }
1209 }
1210
1211 return 0;
1212 }
1213
1214 static int beep_read(char *p)
1215 {
1216 int len = 0;
1217
1218 if (!beep_handle)
1219 len += sprintf(p + len, "status:\t\tnot supported\n");
1220 else {
1221 len += sprintf(p + len, "status:\t\tsupported\n");
1222 len += sprintf(p + len, "commands:\t<cmd> (<cmd> is 0-17)\n");
1223 }
1224
1225 return len;
1226 }
1227
1228 static int beep_write(char *buf)
1229 {
1230 char *cmd;
1231 int beep_cmd;
1232
1233 if (!beep_handle)
1234 return -ENODEV;
1235
1236 while ((cmd = next_cmd(&buf))) {
1237 if (sscanf(cmd, "%u", &beep_cmd) == 1 &&
1238 beep_cmd >= 0 && beep_cmd <= 17) {
1239 /* beep_cmd set */
1240 } else
1241 return -EINVAL;
1242 if (!acpi_evalf(beep_handle, NULL, NULL, "vdd", beep_cmd, 0))
1243 return -EIO;
1244 }
1245
1246 return 0;
1247 }
1248
1249 static int acpi_ec_read(int i, u8 * p)
1250 {
1251 int v;
1252
1253 if (ecrd_handle) {
1254 if (!acpi_evalf(ecrd_handle, &v, NULL, "dd", i))
1255 return 0;
1256 *p = v;
1257 } else {
1258 if (ec_read(i, p) < 0)
1259 return 0;
1260 }
1261
1262 return 1;
1263 }
1264
1265 static int acpi_ec_write(int i, u8 v)
1266 {
1267 if (ecwr_handle) {
1268 if (!acpi_evalf(ecwr_handle, NULL, NULL, "vdd", i, v))
1269 return 0;
1270 } else {
1271 if (ec_write(i, v) < 0)
1272 return 0;
1273 }
1274
1275 return 1;
1276 }
1277
1278 static int thermal_tmp_supported;
1279 static int thermal_updt_supported;
1280
1281 static int thermal_init(void)
1282 {
1283 /* temperatures not supported on 570, G4x, R30, R31, R32 */
1284 thermal_tmp_supported = acpi_evalf(ec_handle, NULL, "TMP7", "qv");
1285
1286 /* 600e/x, 770e, 770x */
1287 thermal_updt_supported = acpi_evalf(ec_handle, NULL, "UPDT", "qv");
1288
1289 return 0;
1290 }
1291
1292 static int thermal_read(char *p)
1293 {
1294 int len = 0;
1295
1296 if (!thermal_tmp_supported)
1297 len += sprintf(p + len, "temperatures:\tnot supported\n");
1298 else {
1299 int i, t;
1300 char tmpi[] = "TMPi";
1301 s8 tmp[8];
1302
1303 if (thermal_updt_supported)
1304 if (!acpi_evalf(ec_handle, NULL, "UPDT", "v"))
1305 return -EIO;
1306
1307 for (i = 0; i < 8; i++) {
1308 tmpi[3] = '0' + i;
1309 if (!acpi_evalf(ec_handle, &t, tmpi, "d"))
1310 return -EIO;
1311 if (thermal_updt_supported)
1312 tmp[i] = (t - 2732 + 5) / 10;
1313 else
1314 tmp[i] = t;
1315 }
1316
1317 len += sprintf(p + len,
1318 "temperatures:\t%d %d %d %d %d %d %d %d\n",
1319 tmp[0], tmp[1], tmp[2], tmp[3],
1320 tmp[4], tmp[5], tmp[6], tmp[7]);
1321 }
1322
1323 return len;
1324 }
1325
1326 static u8 ecdump_regs[256];
1327
1328 static int ecdump_read(char *p)
1329 {
1330 int len = 0;
1331 int i, j;
1332 u8 v;
1333
1334 len += sprintf(p + len, "EC "
1335 " +00 +01 +02 +03 +04 +05 +06 +07"
1336 " +08 +09 +0a +0b +0c +0d +0e +0f\n");
1337 for (i = 0; i < 256; i += 16) {
1338 len += sprintf(p + len, "EC 0x%02x:", i);
1339 for (j = 0; j < 16; j++) {
1340 if (!acpi_ec_read(i + j, &v))
1341 break;
1342 if (v != ecdump_regs[i + j])
1343 len += sprintf(p + len, " *%02x", v);
1344 else
1345 len += sprintf(p + len, " %02x", v);
1346 ecdump_regs[i + j] = v;
1347 }
1348 len += sprintf(p + len, "\n");
1349 if (j != 16)
1350 break;
1351 }
1352
1353 /* These are way too dangerous to advertise openly... */
1354 #if 0
1355 len += sprintf(p + len, "commands:\t0x<offset> 0x<value>"
1356 " (<offset> is 00-ff, <value> is 00-ff)\n");
1357 len += sprintf(p + len, "commands:\t0x<offset> <value> "
1358 " (<offset> is 00-ff, <value> is 0-255)\n");
1359 #endif
1360 return len;
1361 }
1362
1363 static int ecdump_write(char *buf)
1364 {
1365 char *cmd;
1366 int i, v;
1367
1368 while ((cmd = next_cmd(&buf))) {
1369 if (sscanf(cmd, "0x%x 0x%x", &i, &v) == 2) {
1370 /* i and v set */
1371 } else if (sscanf(cmd, "0x%x %u", &i, &v) == 2) {
1372 /* i and v set */
1373 } else
1374 return -EINVAL;
1375 if (i >= 0 && i < 256 && v >= 0 && v < 256) {
1376 if (!acpi_ec_write(i, v))
1377 return -EIO;
1378 } else
1379 return -EINVAL;
1380 }
1381
1382 return 0;
1383 }
1384
1385 static int brightness_offset = 0x31;
1386
1387 static int brightness_get(struct backlight_device *bd)
1388 {
1389 u8 level;
1390 if (!acpi_ec_read(brightness_offset, &level))
1391 return -EIO;
1392
1393 level &= 0x7;
1394 return level;
1395 }
1396
1397 static int brightness_read(char *p)
1398 {
1399 int len = 0;
1400 int level;
1401
1402 if ((level = brightness_get(NULL)) < 0) {
1403 len += sprintf(p + len, "level:\t\tunreadable\n");
1404 } else {
1405 len += sprintf(p + len, "level:\t\t%d\n", level & 0x7);
1406 len += sprintf(p + len, "commands:\tup, down\n");
1407 len += sprintf(p + len, "commands:\tlevel <level>"
1408 " (<level> is 0-7)\n");
1409 }
1410
1411 return len;
1412 }
1413
1414 #define BRIGHTNESS_UP 4
1415 #define BRIGHTNESS_DOWN 5
1416
1417 static int brightness_set(int value)
1418 {
1419 int cmos_cmd, inc, i;
1420 int current_value = brightness_get(NULL);
1421
1422 value &= 7;
1423
1424 cmos_cmd = value > current_value ? BRIGHTNESS_UP : BRIGHTNESS_DOWN;
1425 inc = value > current_value ? 1 : -1;
1426 for (i = current_value; i != value; i += inc) {
1427 if (!cmos_eval(cmos_cmd))
1428 return -EIO;
1429 if (!acpi_ec_write(brightness_offset, i + inc))
1430 return -EIO;
1431 }
1432
1433 return 0;
1434 }
1435
1436 static int brightness_write(char *buf)
1437 {
1438 int level;
1439 int new_level;
1440 char *cmd;
1441
1442 while ((cmd = next_cmd(&buf))) {
1443 if ((level = brightness_get(NULL)) < 0)
1444 return level;
1445 level &= 7;
1446
1447 if (strlencmp(cmd, "up") == 0) {
1448 new_level = level == 7 ? 7 : level + 1;
1449 } else if (strlencmp(cmd, "down") == 0) {
1450 new_level = level == 0 ? 0 : level - 1;
1451 } else if (sscanf(cmd, "level %d", &new_level) == 1 &&
1452 new_level >= 0 && new_level <= 7) {
1453 /* new_level set */
1454 } else
1455 return -EINVAL;
1456
1457 brightness_set(new_level);
1458 }
1459
1460 return 0;
1461 }
1462
1463 static int brightness_update_status(struct backlight_device *bd)
1464 {
1465 return brightness_set(bd->props->brightness);
1466 }
1467
1468 static int volume_offset = 0x30;
1469
1470 static int volume_read(char *p)
1471 {
1472 int len = 0;
1473 u8 level;
1474
1475 if (!acpi_ec_read(volume_offset, &level)) {
1476 len += sprintf(p + len, "level:\t\tunreadable\n");
1477 } else {
1478 len += sprintf(p + len, "level:\t\t%d\n", level & 0xf);
1479 len += sprintf(p + len, "mute:\t\t%s\n", onoff(level, 6));
1480 len += sprintf(p + len, "commands:\tup, down, mute\n");
1481 len += sprintf(p + len, "commands:\tlevel <level>"
1482 " (<level> is 0-15)\n");
1483 }
1484
1485 return len;
1486 }
1487
1488 #define VOLUME_DOWN 0
1489 #define VOLUME_UP 1
1490 #define VOLUME_MUTE 2
1491
1492 static int volume_write(char *buf)
1493 {
1494 int cmos_cmd, inc, i;
1495 u8 level, mute;
1496 int new_level, new_mute;
1497 char *cmd;
1498
1499 while ((cmd = next_cmd(&buf))) {
1500 if (!acpi_ec_read(volume_offset, &level))
1501 return -EIO;
1502 new_mute = mute = level & 0x40;
1503 new_level = level = level & 0xf;
1504
1505 if (strlencmp(cmd, "up") == 0) {
1506 if (mute)
1507 new_mute = 0;
1508 else
1509 new_level = level == 15 ? 15 : level + 1;
1510 } else if (strlencmp(cmd, "down") == 0) {
1511 if (mute)
1512 new_mute = 0;
1513 else
1514 new_level = level == 0 ? 0 : level - 1;
1515 } else if (sscanf(cmd, "level %d", &new_level) == 1 &&
1516 new_level >= 0 && new_level <= 15) {
1517 /* new_level set */
1518 } else if (strlencmp(cmd, "mute") == 0) {
1519 new_mute = 0x40;
1520 } else
1521 return -EINVAL;
1522
1523 if (new_level != level) { /* mute doesn't change */
1524 cmos_cmd = new_level > level ? VOLUME_UP : VOLUME_DOWN;
1525 inc = new_level > level ? 1 : -1;
1526
1527 if (mute && (!cmos_eval(cmos_cmd) ||
1528 !acpi_ec_write(volume_offset, level)))
1529 return -EIO;
1530
1531 for (i = level; i != new_level; i += inc)
1532 if (!cmos_eval(cmos_cmd) ||
1533 !acpi_ec_write(volume_offset, i + inc))
1534 return -EIO;
1535
1536 if (mute && (!cmos_eval(VOLUME_MUTE) ||
1537 !acpi_ec_write(volume_offset,
1538 new_level + mute)))
1539 return -EIO;
1540 }
1541
1542 if (new_mute != mute) { /* level doesn't change */
1543 cmos_cmd = new_mute ? VOLUME_MUTE : VOLUME_UP;
1544
1545 if (!cmos_eval(cmos_cmd) ||
1546 !acpi_ec_write(volume_offset, level + new_mute))
1547 return -EIO;
1548 }
1549 }
1550
1551 return 0;
1552 }
1553
1554 static int fan_status_offset = 0x2f;
1555 static int fan_rpm_offset = 0x84;
1556
1557 static int fan_read(char *p)
1558 {
1559 int len = 0;
1560 int s;
1561 u8 lo, hi, status;
1562
1563 if (gfan_handle) {
1564 /* 570, 600e/x, 770e, 770x */
1565 if (!acpi_evalf(gfan_handle, &s, NULL, "d"))
1566 return -EIO;
1567
1568 len += sprintf(p + len, "level:\t\t%d\n", s);
1569 } else {
1570 /* all except 570, 600e/x, 770e, 770x */
1571 if (!acpi_ec_read(fan_status_offset, &status))
1572 len += sprintf(p + len, "status:\t\tunreadable\n");
1573 else
1574 len += sprintf(p + len, "status:\t\t%s\n",
1575 enabled(status, 7));
1576
1577 if (!acpi_ec_read(fan_rpm_offset, &lo) ||
1578 !acpi_ec_read(fan_rpm_offset + 1, &hi))
1579 len += sprintf(p + len, "speed:\t\tunreadable\n");
1580 else
1581 len += sprintf(p + len, "speed:\t\t%d\n",
1582 (hi << 8) + lo);
1583 }
1584
1585 if (sfan_handle)
1586 /* 570, 770x-JL */
1587 len += sprintf(p + len, "commands:\tlevel <level>"
1588 " (<level> is 0-7)\n");
1589 if (!gfan_handle)
1590 /* all except 570, 600e/x, 770e, 770x */
1591 len += sprintf(p + len, "commands:\tenable, disable\n");
1592 if (fans_handle)
1593 /* X31, X40 */
1594 len += sprintf(p + len, "commands:\tspeed <speed>"
1595 " (<speed> is 0-65535)\n");
1596
1597 return len;
1598 }
1599
1600 static int fan_write(char *buf)
1601 {
1602 char *cmd;
1603 int level, speed;
1604
1605 while ((cmd = next_cmd(&buf))) {
1606 if (sfan_handle &&
1607 sscanf(cmd, "level %d", &level) == 1 &&
1608 level >= 0 && level <= 7) {
1609 /* 570, 770x-JL */
1610 if (!acpi_evalf(sfan_handle, NULL, NULL, "vd", level))
1611 return -EIO;
1612 } else if (!gfan_handle && strlencmp(cmd, "enable") == 0) {
1613 /* all except 570, 600e/x, 770e, 770x */
1614 if (!acpi_ec_write(fan_status_offset, 0x80))
1615 return -EIO;
1616 } else if (!gfan_handle && strlencmp(cmd, "disable") == 0) {
1617 /* all except 570, 600e/x, 770e, 770x */
1618 if (!acpi_ec_write(fan_status_offset, 0x00))
1619 return -EIO;
1620 } else if (fans_handle &&
1621 sscanf(cmd, "speed %d", &speed) == 1 &&
1622 speed >= 0 && speed <= 65535) {
1623 /* X31, X40 */
1624 if (!acpi_evalf(fans_handle, NULL, NULL, "vddd",
1625 speed, speed, speed))
1626 return -EIO;
1627 } else
1628 return -EINVAL;
1629 }
1630
1631 return 0;
1632 }
1633
1634 static struct ibm_struct ibms[] = {
1635 {
1636 .name = "driver",
1637 .init = driver_init,
1638 .read = driver_read,
1639 },
1640 {
1641 .name = "hotkey",
1642 .hid = IBM_HKEY_HID,
1643 .init = hotkey_init,
1644 .read = hotkey_read,
1645 .write = hotkey_write,
1646 .exit = hotkey_exit,
1647 .notify = hotkey_notify,
1648 .handle = &hkey_handle,
1649 .type = ACPI_DEVICE_NOTIFY,
1650 },
1651 {
1652 .name = "bluetooth",
1653 .init = bluetooth_init,
1654 .read = bluetooth_read,
1655 .write = bluetooth_write,
1656 },
1657 {
1658 .name = "wan",
1659 .init = wan_init,
1660 .read = wan_read,
1661 .write = wan_write,
1662 .experimental = 1,
1663 },
1664 {
1665 .name = "video",
1666 .init = video_init,
1667 .read = video_read,
1668 .write = video_write,
1669 .exit = video_exit,
1670 },
1671 {
1672 .name = "light",
1673 .init = light_init,
1674 .read = light_read,
1675 .write = light_write,
1676 },
1677 #ifdef CONFIG_ACPI_IBM_DOCK
1678 {
1679 .name = "dock",
1680 .read = dock_read,
1681 .write = dock_write,
1682 .notify = dock_notify,
1683 .handle = &dock_handle,
1684 .type = ACPI_SYSTEM_NOTIFY,
1685 },
1686 {
1687 .name = "dock",
1688 .hid = IBM_PCI_HID,
1689 .notify = dock_notify,
1690 .handle = &pci_handle,
1691 .type = ACPI_SYSTEM_NOTIFY,
1692 },
1693 #endif
1694 {
1695 .name = "bay",
1696 .init = bay_init,
1697 .read = bay_read,
1698 .write = bay_write,
1699 .notify = bay_notify,
1700 .handle = &bay_handle,
1701 .type = ACPI_SYSTEM_NOTIFY,
1702 },
1703 {
1704 .name = "cmos",
1705 .read = cmos_read,
1706 .write = cmos_write,
1707 },
1708 {
1709 .name = "led",
1710 .init = led_init,
1711 .read = led_read,
1712 .write = led_write,
1713 },
1714 {
1715 .name = "beep",
1716 .read = beep_read,
1717 .write = beep_write,
1718 },
1719 {
1720 .name = "thermal",
1721 .init = thermal_init,
1722 .read = thermal_read,
1723 },
1724 {
1725 .name = "ecdump",
1726 .read = ecdump_read,
1727 .write = ecdump_write,
1728 .experimental = 1,
1729 },
1730 {
1731 .name = "brightness",
1732 .read = brightness_read,
1733 .write = brightness_write,
1734 },
1735 {
1736 .name = "volume",
1737 .read = volume_read,
1738 .write = volume_write,
1739 },
1740 {
1741 .name = "fan",
1742 .read = fan_read,
1743 .write = fan_write,
1744 .experimental = 1,
1745 },
1746 };
1747
1748 static int dispatch_read(char *page, char **start, off_t off, int count,
1749 int *eof, void *data)
1750 {
1751 struct ibm_struct *ibm = data;
1752 int len;
1753
1754 if (!ibm || !ibm->read)
1755 return -EINVAL;
1756
1757 len = ibm->read(page);
1758 if (len < 0)
1759 return len;
1760
1761 if (len <= off + count)
1762 *eof = 1;
1763 *start = page + off;
1764 len -= off;
1765 if (len > count)
1766 len = count;
1767 if (len < 0)
1768 len = 0;
1769
1770 return len;
1771 }
1772
1773 static int dispatch_write(struct file *file, const char __user * userbuf,
1774 unsigned long count, void *data)
1775 {
1776 struct ibm_struct *ibm = data;
1777 char *kernbuf;
1778 int ret;
1779
1780 if (!ibm || !ibm->write)
1781 return -EINVAL;
1782
1783 kernbuf = kmalloc(count + 2, GFP_KERNEL);
1784 if (!kernbuf)
1785 return -ENOMEM;
1786
1787 if (copy_from_user(kernbuf, userbuf, count)) {
1788 kfree(kernbuf);
1789 return -EFAULT;
1790 }
1791
1792 kernbuf[count] = 0;
1793 strcat(kernbuf, ",");
1794 ret = ibm->write(kernbuf);
1795 if (ret == 0)
1796 ret = count;
1797
1798 kfree(kernbuf);
1799
1800 return ret;
1801 }
1802
1803 static void dispatch_notify(acpi_handle handle, u32 event, void *data)
1804 {
1805 struct ibm_struct *ibm = data;
1806
1807 if (!ibm || !ibm->notify)
1808 return;
1809
1810 ibm->notify(ibm, event);
1811 }
1812
1813 static int __init setup_notify(struct ibm_struct *ibm)
1814 {
1815 acpi_status status;
1816 int ret;
1817
1818 if (!*ibm->handle)
1819 return 0;
1820
1821 ret = acpi_bus_get_device(*ibm->handle, &ibm->device);
1822 if (ret < 0) {
1823 printk(IBM_ERR "%s device not present\n", ibm->name);
1824 return 0;
1825 }
1826
1827 acpi_driver_data(ibm->device) = ibm;
1828 sprintf(acpi_device_class(ibm->device), "%s/%s", IBM_NAME, ibm->name);
1829
1830 status = acpi_install_notify_handler(*ibm->handle, ibm->type,
1831 dispatch_notify, ibm);
1832 if (ACPI_FAILURE(status)) {
1833 printk(IBM_ERR "acpi_install_notify_handler(%s) failed: %d\n",
1834 ibm->name, status);
1835 return -ENODEV;
1836 }
1837
1838 return 0;
1839 }
1840
1841 static int __init ibm_device_add(struct acpi_device *device)
1842 {
1843 return 0;
1844 }
1845
1846 static int __init register_driver(struct ibm_struct *ibm)
1847 {
1848 int ret;
1849
1850 ibm->driver = kmalloc(sizeof(struct acpi_driver), GFP_KERNEL);
1851 if (!ibm->driver) {
1852 printk(IBM_ERR "kmalloc(ibm->driver) failed\n");
1853 return -1;
1854 }
1855
1856 memset(ibm->driver, 0, sizeof(struct acpi_driver));
1857 sprintf(ibm->driver->name, "%s_%s", IBM_NAME, ibm->name);
1858 ibm->driver->ids = ibm->hid;
1859 ibm->driver->ops.add = &ibm_device_add;
1860
1861 ret = acpi_bus_register_driver(ibm->driver);
1862 if (ret < 0) {
1863 printk(IBM_ERR "acpi_bus_register_driver(%s) failed: %d\n",
1864 ibm->hid, ret);
1865 kfree(ibm->driver);
1866 }
1867
1868 return ret;
1869 }
1870
1871 static int __init ibm_init(struct ibm_struct *ibm)
1872 {
1873 int ret;
1874 struct proc_dir_entry *entry;
1875
1876 if (ibm->experimental && !experimental)
1877 return 0;
1878
1879 if (ibm->hid) {
1880 ret = register_driver(ibm);
1881 if (ret < 0)
1882 return ret;
1883 ibm->driver_registered = 1;
1884 }
1885
1886 if (ibm->init) {
1887 ret = ibm->init();
1888 if (ret != 0)
1889 return ret;
1890 ibm->init_called = 1;
1891 }
1892
1893 if (ibm->read) {
1894 entry = create_proc_entry(ibm->name,
1895 S_IFREG | S_IRUGO | S_IWUSR,
1896 proc_dir);
1897 if (!entry) {
1898 printk(IBM_ERR "unable to create proc entry %s\n",
1899 ibm->name);
1900 return -ENODEV;
1901 }
1902 entry->owner = THIS_MODULE;
1903 entry->data = ibm;
1904 entry->read_proc = &dispatch_read;
1905 if (ibm->write)
1906 entry->write_proc = &dispatch_write;
1907 ibm->proc_created = 1;
1908 }
1909
1910 if (ibm->notify) {
1911 ret = setup_notify(ibm);
1912 if (ret < 0)
1913 return ret;
1914 ibm->notify_installed = 1;
1915 }
1916
1917 return 0;
1918 }
1919
1920 static void ibm_exit(struct ibm_struct *ibm)
1921 {
1922 if (ibm->notify_installed)
1923 acpi_remove_notify_handler(*ibm->handle, ibm->type,
1924 dispatch_notify);
1925
1926 if (ibm->proc_created)
1927 remove_proc_entry(ibm->name, proc_dir);
1928
1929 if (ibm->init_called && ibm->exit)
1930 ibm->exit();
1931
1932 if (ibm->driver_registered) {
1933 acpi_bus_unregister_driver(ibm->driver);
1934 kfree(ibm->driver);
1935 }
1936 }
1937
1938 static void __init ibm_handle_init(char *name,
1939 acpi_handle * handle, acpi_handle parent,
1940 char **paths, int num_paths, char **path)
1941 {
1942 int i;
1943 acpi_status status;
1944
1945 for (i = 0; i < num_paths; i++) {
1946 status = acpi_get_handle(parent, paths[i], handle);
1947 if (ACPI_SUCCESS(status)) {
1948 *path = paths[i];
1949 return;
1950 }
1951 }
1952
1953 *handle = NULL;
1954 }
1955
1956 #define IBM_HANDLE_INIT(object) \
1957 ibm_handle_init(#object, &object##_handle, *object##_parent, \
1958 object##_paths, ARRAY_SIZE(object##_paths), &object##_path)
1959
1960 static int set_ibm_param(const char *val, struct kernel_param *kp)
1961 {
1962 unsigned int i;
1963
1964 for (i = 0; i < ARRAY_SIZE(ibms); i++)
1965 if (strcmp(ibms[i].name, kp->name) == 0 && ibms[i].write) {
1966 if (strlen(val) > sizeof(ibms[i].param) - 2)
1967 return -ENOSPC;
1968 strcpy(ibms[i].param, val);
1969 strcat(ibms[i].param, ",");
1970 return 0;
1971 }
1972
1973 return -EINVAL;
1974 }
1975
1976 #define IBM_PARAM(feature) \
1977 module_param_call(feature, set_ibm_param, NULL, NULL, 0)
1978
1979 IBM_PARAM(hotkey);
1980 IBM_PARAM(bluetooth);
1981 IBM_PARAM(video);
1982 IBM_PARAM(light);
1983 #ifdef CONFIG_ACPI_IBM_DOCK
1984 IBM_PARAM(dock);
1985 #endif
1986 IBM_PARAM(bay);
1987 IBM_PARAM(cmos);
1988 IBM_PARAM(led);
1989 IBM_PARAM(beep);
1990 IBM_PARAM(ecdump);
1991 IBM_PARAM(brightness);
1992 IBM_PARAM(volume);
1993 IBM_PARAM(fan);
1994
1995 static struct backlight_properties ibm_backlight_data = {
1996 .owner = THIS_MODULE,
1997 .get_brightness = brightness_get,
1998 .update_status = brightness_update_status,
1999 .max_brightness = 7,
2000 };
2001
2002 static void acpi_ibm_exit(void)
2003 {
2004 int i;
2005
2006 if (ibm_backlight_device)
2007 backlight_device_unregister(ibm_backlight_device);
2008
2009 for (i = ARRAY_SIZE(ibms) - 1; i >= 0; i--)
2010 ibm_exit(&ibms[i]);
2011
2012 remove_proc_entry(IBM_DIR, acpi_root_dir);
2013 }
2014
2015 static int __init acpi_ibm_init(void)
2016 {
2017 int ret, i;
2018
2019 if (acpi_disabled)
2020 return -ENODEV;
2021
2022 if (!acpi_specific_hotkey_enabled) {
2023 printk(IBM_ERR "using generic hotkey driver\n");
2024 return -ENODEV;
2025 }
2026
2027 /* ec is required because many other handles are relative to it */
2028 IBM_HANDLE_INIT(ec);
2029 if (!ec_handle) {
2030 printk(IBM_ERR "ec object not found\n");
2031 return -ENODEV;
2032 }
2033
2034 /* these handles are not required */
2035 IBM_HANDLE_INIT(vid);
2036 IBM_HANDLE_INIT(vid2);
2037 IBM_HANDLE_INIT(ledb);
2038 IBM_HANDLE_INIT(led);
2039 IBM_HANDLE_INIT(hkey);
2040 IBM_HANDLE_INIT(lght);
2041 IBM_HANDLE_INIT(cmos);
2042 #ifdef CONFIG_ACPI_IBM_DOCK
2043 IBM_HANDLE_INIT(dock);
2044 #endif
2045 IBM_HANDLE_INIT(pci);
2046 IBM_HANDLE_INIT(bay);
2047 if (bay_handle)
2048 IBM_HANDLE_INIT(bay_ej);
2049 IBM_HANDLE_INIT(bay2);
2050 if (bay2_handle)
2051 IBM_HANDLE_INIT(bay2_ej);
2052 IBM_HANDLE_INIT(beep);
2053 IBM_HANDLE_INIT(ecrd);
2054 IBM_HANDLE_INIT(ecwr);
2055 IBM_HANDLE_INIT(fans);
2056 IBM_HANDLE_INIT(gfan);
2057 IBM_HANDLE_INIT(sfan);
2058
2059 proc_dir = proc_mkdir(IBM_DIR, acpi_root_dir);
2060 if (!proc_dir) {
2061 printk(IBM_ERR "unable to create proc dir %s", IBM_DIR);
2062 return -ENODEV;
2063 }
2064 proc_dir->owner = THIS_MODULE;
2065
2066 for (i = 0; i < ARRAY_SIZE(ibms); i++) {
2067 ret = ibm_init(&ibms[i]);
2068 if (ret >= 0 && *ibms[i].param)
2069 ret = ibms[i].write(ibms[i].param);
2070 if (ret < 0) {
2071 acpi_ibm_exit();
2072 return ret;
2073 }
2074 }
2075
2076 ibm_backlight_device = backlight_device_register("ibm", NULL,
2077 &ibm_backlight_data);
2078 if (IS_ERR(ibm_backlight_device)) {
2079 printk(IBM_ERR "Could not register ibm backlight device\n");
2080 ibm_backlight_device = NULL;
2081 acpi_ibm_exit();
2082 }
2083
2084 return 0;
2085 }
2086
2087 module_init(acpi_ibm_init);
2088 module_exit(acpi_ibm_exit);
Linux 2.6 ibm-acpi/thinkpad-acpi driver git tree