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Merge master.kernel.org:/pub/scm/linux/kernel/git/sam/kbuild
[GitHub/mt8127/android_kernel_alcatel_ttab.git] / drivers / acpi / ibm_acpi.c
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 video_supported;
571 static int video_orig_autosw;
572
573 #define VIDEO_570 1
574 #define VIDEO_770 2
575 #define VIDEO_NEW 3
576
577 static int video_init(void)
578 {
579 int ivga;
580
581 if (vid2_handle && acpi_evalf(NULL, &ivga, "\\IVGA", "d") && ivga)
582 /* G41, assume IVGA doesn't change */
583 vid_handle = vid2_handle;
584
585 if (!vid_handle)
586 /* video switching not supported on R30, R31 */
587 video_supported = 0;
588 else if (acpi_evalf(vid_handle, &video_orig_autosw, "SWIT", "qd"))
589 /* 570 */
590 video_supported = VIDEO_570;
591 else if (acpi_evalf(vid_handle, &video_orig_autosw, "^VADL", "qd"))
592 /* 600e/x, 770e, 770x */
593 video_supported = VIDEO_770;
594 else
595 /* all others */
596 video_supported = VIDEO_NEW;
597
598 return 0;
599 }
600
601 static int video_status(void)
602 {
603 int status = 0;
604 int i;
605
606 if (video_supported == VIDEO_570) {
607 if (acpi_evalf(NULL, &i, "\\_SB.PHS", "dd", 0x87))
608 status = i & 3;
609 } else if (video_supported == VIDEO_770) {
610 if (acpi_evalf(NULL, &i, "\\VCDL", "d"))
611 status |= 0x01 * i;
612 if (acpi_evalf(NULL, &i, "\\VCDC", "d"))
613 status |= 0x02 * i;
614 } else if (video_supported == VIDEO_NEW) {
615 acpi_evalf(NULL, NULL, "\\VUPS", "vd", 1);
616 if (acpi_evalf(NULL, &i, "\\VCDC", "d"))
617 status |= 0x02 * i;
618
619 acpi_evalf(NULL, NULL, "\\VUPS", "vd", 0);
620 if (acpi_evalf(NULL, &i, "\\VCDL", "d"))
621 status |= 0x01 * i;
622 if (acpi_evalf(NULL, &i, "\\VCDD", "d"))
623 status |= 0x08 * i;
624 }
625
626 return status;
627 }
628
629 static int video_autosw(void)
630 {
631 int autosw = 0;
632
633 if (video_supported == VIDEO_570)
634 acpi_evalf(vid_handle, &autosw, "SWIT", "d");
635 else if (video_supported == VIDEO_770 || video_supported == VIDEO_NEW)
636 acpi_evalf(vid_handle, &autosw, "^VDEE", "d");
637
638 return autosw & 1;
639 }
640
641 static int video_read(char *p)
642 {
643 int status = video_status();
644 int autosw = video_autosw();
645 int len = 0;
646
647 if (!video_supported) {
648 len += sprintf(p + len, "status:\t\tnot supported\n");
649 return len;
650 }
651
652 len += sprintf(p + len, "status:\t\tsupported\n");
653 len += sprintf(p + len, "lcd:\t\t%s\n", enabled(status, 0));
654 len += sprintf(p + len, "crt:\t\t%s\n", enabled(status, 1));
655 if (video_supported == VIDEO_NEW)
656 len += sprintf(p + len, "dvi:\t\t%s\n", enabled(status, 3));
657 len += sprintf(p + len, "auto:\t\t%s\n", enabled(autosw, 0));
658 len += sprintf(p + len, "commands:\tlcd_enable, lcd_disable\n");
659 len += sprintf(p + len, "commands:\tcrt_enable, crt_disable\n");
660 if (video_supported == VIDEO_NEW)
661 len += sprintf(p + len, "commands:\tdvi_enable, dvi_disable\n");
662 len += sprintf(p + len, "commands:\tauto_enable, auto_disable\n");
663 len += sprintf(p + len, "commands:\tvideo_switch, expand_toggle\n");
664
665 return len;
666 }
667
668 static int video_switch(void)
669 {
670 int autosw = video_autosw();
671 int ret;
672
673 if (!acpi_evalf(vid_handle, NULL, "_DOS", "vd", 1))
674 return -EIO;
675 ret = video_supported == VIDEO_570 ?
676 acpi_evalf(ec_handle, NULL, "_Q16", "v") :
677 acpi_evalf(vid_handle, NULL, "VSWT", "v");
678 acpi_evalf(vid_handle, NULL, "_DOS", "vd", autosw);
679
680 return ret;
681 }
682
683 static int video_expand(void)
684 {
685 if (video_supported == VIDEO_570)
686 return acpi_evalf(ec_handle, NULL, "_Q17", "v");
687 else if (video_supported == VIDEO_770)
688 return acpi_evalf(vid_handle, NULL, "VEXP", "v");
689 else
690 return acpi_evalf(NULL, NULL, "\\VEXP", "v");
691 }
692
693 static int video_switch2(int status)
694 {
695 int ret;
696
697 if (video_supported == VIDEO_570) {
698 ret = acpi_evalf(NULL, NULL,
699 "\\_SB.PHS2", "vdd", 0x8b, status | 0x80);
700 } else if (video_supported == VIDEO_770) {
701 int autosw = video_autosw();
702 if (!acpi_evalf(vid_handle, NULL, "_DOS", "vd", 1))
703 return -EIO;
704
705 ret = acpi_evalf(vid_handle, NULL,
706 "ASWT", "vdd", status * 0x100, 0);
707
708 acpi_evalf(vid_handle, NULL, "_DOS", "vd", autosw);
709 } else {
710 ret = acpi_evalf(NULL, NULL, "\\VUPS", "vd", 0x80) &&
711 acpi_evalf(NULL, NULL, "\\VSDS", "vdd", status, 1);
712 }
713
714 return ret;
715 }
716
717 static int video_write(char *buf)
718 {
719 char *cmd;
720 int enable, disable, status;
721
722 if (!video_supported)
723 return -ENODEV;
724
725 enable = disable = 0;
726
727 while ((cmd = next_cmd(&buf))) {
728 if (strlencmp(cmd, "lcd_enable") == 0) {
729 enable |= 0x01;
730 } else if (strlencmp(cmd, "lcd_disable") == 0) {
731 disable |= 0x01;
732 } else if (strlencmp(cmd, "crt_enable") == 0) {
733 enable |= 0x02;
734 } else if (strlencmp(cmd, "crt_disable") == 0) {
735 disable |= 0x02;
736 } else if (video_supported == VIDEO_NEW &&
737 strlencmp(cmd, "dvi_enable") == 0) {
738 enable |= 0x08;
739 } else if (video_supported == VIDEO_NEW &&
740 strlencmp(cmd, "dvi_disable") == 0) {
741 disable |= 0x08;
742 } else if (strlencmp(cmd, "auto_enable") == 0) {
743 if (!acpi_evalf(vid_handle, NULL, "_DOS", "vd", 1))
744 return -EIO;
745 } else if (strlencmp(cmd, "auto_disable") == 0) {
746 if (!acpi_evalf(vid_handle, NULL, "_DOS", "vd", 0))
747 return -EIO;
748 } else if (strlencmp(cmd, "video_switch") == 0) {
749 if (!video_switch())
750 return -EIO;
751 } else if (strlencmp(cmd, "expand_toggle") == 0) {
752 if (!video_expand())
753 return -EIO;
754 } else
755 return -EINVAL;
756 }
757
758 if (enable || disable) {
759 status = (video_status() & 0x0f & ~disable) | enable;
760 if (!video_switch2(status))
761 return -EIO;
762 }
763
764 return 0;
765 }
766
767 static void video_exit(void)
768 {
769 acpi_evalf(vid_handle, NULL, "_DOS", "vd", video_orig_autosw);
770 }
771
772 static int light_supported;
773 static int light_status_supported;
774
775 static int light_init(void)
776 {
777 /* light not supported on 570, 600e/x, 770e, 770x, G4x, R30, R31 */
778 light_supported = (cmos_handle || lght_handle) && !ledb_handle;
779
780 if (light_supported)
781 /* light status not supported on
782 570, 600e/x, 770e, 770x, G4x, R30, R31, R32, X20 */
783 light_status_supported = acpi_evalf(ec_handle, NULL,
784 "KBLT", "qv");
785
786 return 0;
787 }
788
789 static int light_read(char *p)
790 {
791 int len = 0;
792 int status = 0;
793
794 if (!light_supported) {
795 len += sprintf(p + len, "status:\t\tnot supported\n");
796 } else if (!light_status_supported) {
797 len += sprintf(p + len, "status:\t\tunknown\n");
798 len += sprintf(p + len, "commands:\ton, off\n");
799 } else {
800 if (!acpi_evalf(ec_handle, &status, "KBLT", "d"))
801 return -EIO;
802 len += sprintf(p + len, "status:\t\t%s\n", onoff(status, 0));
803 len += sprintf(p + len, "commands:\ton, off\n");
804 }
805
806 return len;
807 }
808
809 static int light_write(char *buf)
810 {
811 int cmos_cmd, lght_cmd;
812 char *cmd;
813 int success;
814
815 if (!light_supported)
816 return -ENODEV;
817
818 while ((cmd = next_cmd(&buf))) {
819 if (strlencmp(cmd, "on") == 0) {
820 cmos_cmd = 0x0c;
821 lght_cmd = 1;
822 } else if (strlencmp(cmd, "off") == 0) {
823 cmos_cmd = 0x0d;
824 lght_cmd = 0;
825 } else
826 return -EINVAL;
827
828 success = cmos_handle ?
829 acpi_evalf(cmos_handle, NULL, NULL, "vd", cmos_cmd) :
830 acpi_evalf(lght_handle, NULL, NULL, "vd", lght_cmd);
831 if (!success)
832 return -EIO;
833 }
834
835 return 0;
836 }
837
838 static int _sta(acpi_handle handle)
839 {
840 int status;
841
842 if (!handle || !acpi_evalf(handle, &status, "_STA", "d"))
843 status = 0;
844
845 return status;
846 }
847 #ifdef CONFIG_ACPI_IBM_DOCK
848 #define dock_docked() (_sta(dock_handle) & 1)
849
850 static int dock_read(char *p)
851 {
852 int len = 0;
853 int docked = dock_docked();
854
855 if (!dock_handle)
856 len += sprintf(p + len, "status:\t\tnot supported\n");
857 else if (!docked)
858 len += sprintf(p + len, "status:\t\tundocked\n");
859 else {
860 len += sprintf(p + len, "status:\t\tdocked\n");
861 len += sprintf(p + len, "commands:\tdock, undock\n");
862 }
863
864 return len;
865 }
866
867 static int dock_write(char *buf)
868 {
869 char *cmd;
870
871 if (!dock_docked())
872 return -ENODEV;
873
874 while ((cmd = next_cmd(&buf))) {
875 if (strlencmp(cmd, "undock") == 0) {
876 if (!acpi_evalf(dock_handle, NULL, "_DCK", "vd", 0) ||
877 !acpi_evalf(dock_handle, NULL, "_EJ0", "vd", 1))
878 return -EIO;
879 } else if (strlencmp(cmd, "dock") == 0) {
880 if (!acpi_evalf(dock_handle, NULL, "_DCK", "vd", 1))
881 return -EIO;
882 } else
883 return -EINVAL;
884 }
885
886 return 0;
887 }
888
889 static void dock_notify(struct ibm_struct *ibm, u32 event)
890 {
891 int docked = dock_docked();
892 int pci = ibm->hid && strstr(ibm->hid, IBM_PCI_HID);
893
894 if (event == 1 && !pci) /* 570 */
895 acpi_bus_generate_event(ibm->device, event, 1); /* button */
896 else if (event == 1 && pci) /* 570 */
897 acpi_bus_generate_event(ibm->device, event, 3); /* dock */
898 else if (event == 3 && docked)
899 acpi_bus_generate_event(ibm->device, event, 1); /* button */
900 else if (event == 3 && !docked)
901 acpi_bus_generate_event(ibm->device, event, 2); /* undock */
902 else if (event == 0 && docked)
903 acpi_bus_generate_event(ibm->device, event, 3); /* dock */
904 else {
905 printk(IBM_ERR "unknown dock event %d, status %d\n",
906 event, _sta(dock_handle));
907 acpi_bus_generate_event(ibm->device, event, 0); /* unknown */
908 }
909 }
910 #endif
911
912 static int bay_status_supported;
913 static int bay_status2_supported;
914 static int bay_eject_supported;
915 static int bay_eject2_supported;
916
917 static int bay_init(void)
918 {
919 bay_status_supported = bay_handle &&
920 acpi_evalf(bay_handle, NULL, "_STA", "qv");
921 bay_status2_supported = bay2_handle &&
922 acpi_evalf(bay2_handle, NULL, "_STA", "qv");
923
924 bay_eject_supported = bay_handle && bay_ej_handle &&
925 (strlencmp(bay_ej_path, "_EJ0") == 0 || experimental);
926 bay_eject2_supported = bay2_handle && bay2_ej_handle &&
927 (strlencmp(bay2_ej_path, "_EJ0") == 0 || experimental);
928
929 return 0;
930 }
931
932 #define bay_occupied(b) (_sta(b##_handle) & 1)
933
934 static int bay_read(char *p)
935 {
936 int len = 0;
937 int occupied = bay_occupied(bay);
938 int occupied2 = bay_occupied(bay2);
939 int eject, eject2;
940
941 len += sprintf(p + len, "status:\t\t%s\n", bay_status_supported ?
942 (occupied ? "occupied" : "unoccupied") :
943 "not supported");
944 if (bay_status2_supported)
945 len += sprintf(p + len, "status2:\t%s\n", occupied2 ?
946 "occupied" : "unoccupied");
947
948 eject = bay_eject_supported && occupied;
949 eject2 = bay_eject2_supported && occupied2;
950
951 if (eject && eject2)
952 len += sprintf(p + len, "commands:\teject, eject2\n");
953 else if (eject)
954 len += sprintf(p + len, "commands:\teject\n");
955 else if (eject2)
956 len += sprintf(p + len, "commands:\teject2\n");
957
958 return len;
959 }
960
961 static int bay_write(char *buf)
962 {
963 char *cmd;
964
965 if (!bay_eject_supported && !bay_eject2_supported)
966 return -ENODEV;
967
968 while ((cmd = next_cmd(&buf))) {
969 if (bay_eject_supported && strlencmp(cmd, "eject") == 0) {
970 if (!acpi_evalf(bay_ej_handle, NULL, NULL, "vd", 1))
971 return -EIO;
972 } else if (bay_eject2_supported &&
973 strlencmp(cmd, "eject2") == 0) {
974 if (!acpi_evalf(bay2_ej_handle, NULL, NULL, "vd", 1))
975 return -EIO;
976 } else
977 return -EINVAL;
978 }
979
980 return 0;
981 }
982
983 static void bay_notify(struct ibm_struct *ibm, u32 event)
984 {
985 acpi_bus_generate_event(ibm->device, event, 0);
986 }
987
988 static int cmos_read(char *p)
989 {
990 int len = 0;
991
992 /* cmos not supported on 570, 600e/x, 770e, 770x, A21e, A2xm/p,
993 R30, R31, T20-22, X20-21 */
994 if (!cmos_handle)
995 len += sprintf(p + len, "status:\t\tnot supported\n");
996 else {
997 len += sprintf(p + len, "status:\t\tsupported\n");
998 len += sprintf(p + len, "commands:\t<cmd> (<cmd> is 0-21)\n");
999 }
1000
1001 return len;
1002 }
1003
1004 static int cmos_eval(int cmos_cmd)
1005 {
1006 if (cmos_handle)
1007 return acpi_evalf(cmos_handle, NULL, NULL, "vd", cmos_cmd);
1008 else
1009 return 1;
1010 }
1011
1012 static int cmos_write(char *buf)
1013 {
1014 char *cmd;
1015 int cmos_cmd;
1016
1017 if (!cmos_handle)
1018 return -EINVAL;
1019
1020 while ((cmd = next_cmd(&buf))) {
1021 if (sscanf(cmd, "%u", &cmos_cmd) == 1 &&
1022 cmos_cmd >= 0 && cmos_cmd <= 21) {
1023 /* cmos_cmd set */
1024 } else
1025 return -EINVAL;
1026
1027 if (!cmos_eval(cmos_cmd))
1028 return -EIO;
1029 }
1030
1031 return 0;
1032 }
1033
1034 static int led_supported;
1035
1036 #define LED_570 1
1037 #define LED_OLD 2
1038 #define LED_NEW 3
1039
1040 static int led_init(void)
1041 {
1042 if (!led_handle)
1043 /* led not supported on R30, R31 */
1044 led_supported = 0;
1045 else if (strlencmp(led_path, "SLED") == 0)
1046 /* 570 */
1047 led_supported = LED_570;
1048 else if (strlencmp(led_path, "SYSL") == 0)
1049 /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20-21 */
1050 led_supported = LED_OLD;
1051 else
1052 /* all others */
1053 led_supported = LED_NEW;
1054
1055 return 0;
1056 }
1057
1058 #define led_status(s) ((s) == 0 ? "off" : ((s) == 1 ? "on" : "blinking"))
1059
1060 static int led_read(char *p)
1061 {
1062 int len = 0;
1063
1064 if (!led_supported) {
1065 len += sprintf(p + len, "status:\t\tnot supported\n");
1066 return len;
1067 }
1068 len += sprintf(p + len, "status:\t\tsupported\n");
1069
1070 if (led_supported == LED_570) {
1071 /* 570 */
1072 int i, status;
1073 for (i = 0; i < 8; i++) {
1074 if (!acpi_evalf(ec_handle,
1075 &status, "GLED", "dd", 1 << i))
1076 return -EIO;
1077 len += sprintf(p + len, "%d:\t\t%s\n",
1078 i, led_status(status));
1079 }
1080 }
1081
1082 len += sprintf(p + len, "commands:\t"
1083 "<led> on, <led> off, <led> blink (<led> is 0-7)\n");
1084
1085 return len;
1086 }
1087
1088 /* off, on, blink */
1089 static const int led_sled_arg1[] = { 0, 1, 3 };
1090 static const int led_exp_hlbl[] = { 0, 0, 1 }; /* led# * */
1091 static const int led_exp_hlcl[] = { 0, 1, 1 }; /* led# * */
1092 static const int led_led_arg1[] = { 0, 0x80, 0xc0 };
1093
1094 #define EC_HLCL 0x0c
1095 #define EC_HLBL 0x0d
1096 #define EC_HLMS 0x0e
1097
1098 static int led_write(char *buf)
1099 {
1100 char *cmd;
1101 int led, ind, ret;
1102
1103 if (!led_supported)
1104 return -ENODEV;
1105
1106 while ((cmd = next_cmd(&buf))) {
1107 if (sscanf(cmd, "%d", &led) != 1 || led < 0 || led > 7)
1108 return -EINVAL;
1109
1110 if (strstr(cmd, "off")) {
1111 ind = 0;
1112 } else if (strstr(cmd, "on")) {
1113 ind = 1;
1114 } else if (strstr(cmd, "blink")) {
1115 ind = 2;
1116 } else
1117 return -EINVAL;
1118
1119 if (led_supported == LED_570) {
1120 /* 570 */
1121 led = 1 << led;
1122 if (!acpi_evalf(led_handle, NULL, NULL, "vdd",
1123 led, led_sled_arg1[ind]))
1124 return -EIO;
1125 } else if (led_supported == LED_OLD) {
1126 /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20 */
1127 led = 1 << led;
1128 ret = ec_write(EC_HLMS, led);
1129 if (ret >= 0)
1130 ret =
1131 ec_write(EC_HLBL, led * led_exp_hlbl[ind]);
1132 if (ret >= 0)
1133 ret =
1134 ec_write(EC_HLCL, led * led_exp_hlcl[ind]);
1135 if (ret < 0)
1136 return ret;
1137 } else {
1138 /* all others */
1139 if (!acpi_evalf(led_handle, NULL, NULL, "vdd",
1140 led, led_led_arg1[ind]))
1141 return -EIO;
1142 }
1143 }
1144
1145 return 0;
1146 }
1147
1148 static int beep_read(char *p)
1149 {
1150 int len = 0;
1151
1152 if (!beep_handle)
1153 len += sprintf(p + len, "status:\t\tnot supported\n");
1154 else {
1155 len += sprintf(p + len, "status:\t\tsupported\n");
1156 len += sprintf(p + len, "commands:\t<cmd> (<cmd> is 0-17)\n");
1157 }
1158
1159 return len;
1160 }
1161
1162 static int beep_write(char *buf)
1163 {
1164 char *cmd;
1165 int beep_cmd;
1166
1167 if (!beep_handle)
1168 return -ENODEV;
1169
1170 while ((cmd = next_cmd(&buf))) {
1171 if (sscanf(cmd, "%u", &beep_cmd) == 1 &&
1172 beep_cmd >= 0 && beep_cmd <= 17) {
1173 /* beep_cmd set */
1174 } else
1175 return -EINVAL;
1176 if (!acpi_evalf(beep_handle, NULL, NULL, "vdd", beep_cmd, 0))
1177 return -EIO;
1178 }
1179
1180 return 0;
1181 }
1182
1183 static int acpi_ec_read(int i, u8 * p)
1184 {
1185 int v;
1186
1187 if (ecrd_handle) {
1188 if (!acpi_evalf(ecrd_handle, &v, NULL, "dd", i))
1189 return 0;
1190 *p = v;
1191 } else {
1192 if (ec_read(i, p) < 0)
1193 return 0;
1194 }
1195
1196 return 1;
1197 }
1198
1199 static int acpi_ec_write(int i, u8 v)
1200 {
1201 if (ecwr_handle) {
1202 if (!acpi_evalf(ecwr_handle, NULL, NULL, "vdd", i, v))
1203 return 0;
1204 } else {
1205 if (ec_write(i, v) < 0)
1206 return 0;
1207 }
1208
1209 return 1;
1210 }
1211
1212 static int thermal_tmp_supported;
1213 static int thermal_updt_supported;
1214
1215 static int thermal_init(void)
1216 {
1217 /* temperatures not supported on 570, G4x, R30, R31, R32 */
1218 thermal_tmp_supported = acpi_evalf(ec_handle, NULL, "TMP7", "qv");
1219
1220 /* 600e/x, 770e, 770x */
1221 thermal_updt_supported = acpi_evalf(ec_handle, NULL, "UPDT", "qv");
1222
1223 return 0;
1224 }
1225
1226 static int thermal_read(char *p)
1227 {
1228 int len = 0;
1229
1230 if (!thermal_tmp_supported)
1231 len += sprintf(p + len, "temperatures:\tnot supported\n");
1232 else {
1233 int i, t;
1234 char tmpi[] = "TMPi";
1235 s8 tmp[8];
1236
1237 if (thermal_updt_supported)
1238 if (!acpi_evalf(ec_handle, NULL, "UPDT", "v"))
1239 return -EIO;
1240
1241 for (i = 0; i < 8; i++) {
1242 tmpi[3] = '0' + i;
1243 if (!acpi_evalf(ec_handle, &t, tmpi, "d"))
1244 return -EIO;
1245 if (thermal_updt_supported)
1246 tmp[i] = (t - 2732 + 5) / 10;
1247 else
1248 tmp[i] = t;
1249 }
1250
1251 len += sprintf(p + len,
1252 "temperatures:\t%d %d %d %d %d %d %d %d\n",
1253 tmp[0], tmp[1], tmp[2], tmp[3],
1254 tmp[4], tmp[5], tmp[6], tmp[7]);
1255 }
1256
1257 return len;
1258 }
1259
1260 static u8 ecdump_regs[256];
1261
1262 static int ecdump_read(char *p)
1263 {
1264 int len = 0;
1265 int i, j;
1266 u8 v;
1267
1268 len += sprintf(p + len, "EC "
1269 " +00 +01 +02 +03 +04 +05 +06 +07"
1270 " +08 +09 +0a +0b +0c +0d +0e +0f\n");
1271 for (i = 0; i < 256; i += 16) {
1272 len += sprintf(p + len, "EC 0x%02x:", i);
1273 for (j = 0; j < 16; j++) {
1274 if (!acpi_ec_read(i + j, &v))
1275 break;
1276 if (v != ecdump_regs[i + j])
1277 len += sprintf(p + len, " *%02x", v);
1278 else
1279 len += sprintf(p + len, " %02x", v);
1280 ecdump_regs[i + j] = v;
1281 }
1282 len += sprintf(p + len, "\n");
1283 if (j != 16)
1284 break;
1285 }
1286
1287 /* These are way too dangerous to advertise openly... */
1288 #if 0
1289 len += sprintf(p + len, "commands:\t0x<offset> 0x<value>"
1290 " (<offset> is 00-ff, <value> is 00-ff)\n");
1291 len += sprintf(p + len, "commands:\t0x<offset> <value> "
1292 " (<offset> is 00-ff, <value> is 0-255)\n");
1293 #endif
1294 return len;
1295 }
1296
1297 static int ecdump_write(char *buf)
1298 {
1299 char *cmd;
1300 int i, v;
1301
1302 while ((cmd = next_cmd(&buf))) {
1303 if (sscanf(cmd, "0x%x 0x%x", &i, &v) == 2) {
1304 /* i and v set */
1305 } else if (sscanf(cmd, "0x%x %u", &i, &v) == 2) {
1306 /* i and v set */
1307 } else
1308 return -EINVAL;
1309 if (i >= 0 && i < 256 && v >= 0 && v < 256) {
1310 if (!acpi_ec_write(i, v))
1311 return -EIO;
1312 } else
1313 return -EINVAL;
1314 }
1315
1316 return 0;
1317 }
1318
1319 static int brightness_offset = 0x31;
1320
1321 static int brightness_read(char *p)
1322 {
1323 int len = 0;
1324 u8 level;
1325
1326 if (!acpi_ec_read(brightness_offset, &level)) {
1327 len += sprintf(p + len, "level:\t\tunreadable\n");
1328 } else {
1329 len += sprintf(p + len, "level:\t\t%d\n", level & 0x7);
1330 len += sprintf(p + len, "commands:\tup, down\n");
1331 len += sprintf(p + len, "commands:\tlevel <level>"
1332 " (<level> is 0-7)\n");
1333 }
1334
1335 return len;
1336 }
1337
1338 #define BRIGHTNESS_UP 4
1339 #define BRIGHTNESS_DOWN 5
1340
1341 static int brightness_write(char *buf)
1342 {
1343 int cmos_cmd, inc, i;
1344 u8 level;
1345 int new_level;
1346 char *cmd;
1347
1348 while ((cmd = next_cmd(&buf))) {
1349 if (!acpi_ec_read(brightness_offset, &level))
1350 return -EIO;
1351 level &= 7;
1352
1353 if (strlencmp(cmd, "up") == 0) {
1354 new_level = level == 7 ? 7 : level + 1;
1355 } else if (strlencmp(cmd, "down") == 0) {
1356 new_level = level == 0 ? 0 : level - 1;
1357 } else if (sscanf(cmd, "level %d", &new_level) == 1 &&
1358 new_level >= 0 && new_level <= 7) {
1359 /* new_level set */
1360 } else
1361 return -EINVAL;
1362
1363 cmos_cmd = new_level > level ? BRIGHTNESS_UP : BRIGHTNESS_DOWN;
1364 inc = new_level > level ? 1 : -1;
1365 for (i = level; i != new_level; i += inc) {
1366 if (!cmos_eval(cmos_cmd))
1367 return -EIO;
1368 if (!acpi_ec_write(brightness_offset, i + inc))
1369 return -EIO;
1370 }
1371 }
1372
1373 return 0;
1374 }
1375
1376 static int volume_offset = 0x30;
1377
1378 static int volume_read(char *p)
1379 {
1380 int len = 0;
1381 u8 level;
1382
1383 if (!acpi_ec_read(volume_offset, &level)) {
1384 len += sprintf(p + len, "level:\t\tunreadable\n");
1385 } else {
1386 len += sprintf(p + len, "level:\t\t%d\n", level & 0xf);
1387 len += sprintf(p + len, "mute:\t\t%s\n", onoff(level, 6));
1388 len += sprintf(p + len, "commands:\tup, down, mute\n");
1389 len += sprintf(p + len, "commands:\tlevel <level>"
1390 " (<level> is 0-15)\n");
1391 }
1392
1393 return len;
1394 }
1395
1396 #define VOLUME_DOWN 0
1397 #define VOLUME_UP 1
1398 #define VOLUME_MUTE 2
1399
1400 static int volume_write(char *buf)
1401 {
1402 int cmos_cmd, inc, i;
1403 u8 level, mute;
1404 int new_level, new_mute;
1405 char *cmd;
1406
1407 while ((cmd = next_cmd(&buf))) {
1408 if (!acpi_ec_read(volume_offset, &level))
1409 return -EIO;
1410 new_mute = mute = level & 0x40;
1411 new_level = level = level & 0xf;
1412
1413 if (strlencmp(cmd, "up") == 0) {
1414 if (mute)
1415 new_mute = 0;
1416 else
1417 new_level = level == 15 ? 15 : level + 1;
1418 } else if (strlencmp(cmd, "down") == 0) {
1419 if (mute)
1420 new_mute = 0;
1421 else
1422 new_level = level == 0 ? 0 : level - 1;
1423 } else if (sscanf(cmd, "level %d", &new_level) == 1 &&
1424 new_level >= 0 && new_level <= 15) {
1425 /* new_level set */
1426 } else if (strlencmp(cmd, "mute") == 0) {
1427 new_mute = 0x40;
1428 } else
1429 return -EINVAL;
1430
1431 if (new_level != level) { /* mute doesn't change */
1432 cmos_cmd = new_level > level ? VOLUME_UP : VOLUME_DOWN;
1433 inc = new_level > level ? 1 : -1;
1434
1435 if (mute && (!cmos_eval(cmos_cmd) ||
1436 !acpi_ec_write(volume_offset, level)))
1437 return -EIO;
1438
1439 for (i = level; i != new_level; i += inc)
1440 if (!cmos_eval(cmos_cmd) ||
1441 !acpi_ec_write(volume_offset, i + inc))
1442 return -EIO;
1443
1444 if (mute && (!cmos_eval(VOLUME_MUTE) ||
1445 !acpi_ec_write(volume_offset,
1446 new_level + mute)))
1447 return -EIO;
1448 }
1449
1450 if (new_mute != mute) { /* level doesn't change */
1451 cmos_cmd = new_mute ? VOLUME_MUTE : VOLUME_UP;
1452
1453 if (!cmos_eval(cmos_cmd) ||
1454 !acpi_ec_write(volume_offset, level + new_mute))
1455 return -EIO;
1456 }
1457 }
1458
1459 return 0;
1460 }
1461
1462 static int fan_status_offset = 0x2f;
1463 static int fan_rpm_offset = 0x84;
1464
1465 static int fan_read(char *p)
1466 {
1467 int len = 0;
1468 int s;
1469 u8 lo, hi, status;
1470
1471 if (gfan_handle) {
1472 /* 570, 600e/x, 770e, 770x */
1473 if (!acpi_evalf(gfan_handle, &s, NULL, "d"))
1474 return -EIO;
1475
1476 len += sprintf(p + len, "level:\t\t%d\n", s);
1477 } else {
1478 /* all except 570, 600e/x, 770e, 770x */
1479 if (!acpi_ec_read(fan_status_offset, &status))
1480 len += sprintf(p + len, "status:\t\tunreadable\n");
1481 else
1482 len += sprintf(p + len, "status:\t\t%s\n",
1483 enabled(status, 7));
1484
1485 if (!acpi_ec_read(fan_rpm_offset, &lo) ||
1486 !acpi_ec_read(fan_rpm_offset + 1, &hi))
1487 len += sprintf(p + len, "speed:\t\tunreadable\n");
1488 else
1489 len += sprintf(p + len, "speed:\t\t%d\n",
1490 (hi << 8) + lo);
1491 }
1492
1493 if (sfan_handle)
1494 /* 570, 770x-JL */
1495 len += sprintf(p + len, "commands:\tlevel <level>"
1496 " (<level> is 0-7)\n");
1497 if (!gfan_handle)
1498 /* all except 570, 600e/x, 770e, 770x */
1499 len += sprintf(p + len, "commands:\tenable, disable\n");
1500 if (fans_handle)
1501 /* X31, X40 */
1502 len += sprintf(p + len, "commands:\tspeed <speed>"
1503 " (<speed> is 0-65535)\n");
1504
1505 return len;
1506 }
1507
1508 static int fan_write(char *buf)
1509 {
1510 char *cmd;
1511 int level, speed;
1512
1513 while ((cmd = next_cmd(&buf))) {
1514 if (sfan_handle &&
1515 sscanf(cmd, "level %d", &level) == 1 &&
1516 level >= 0 && level <= 7) {
1517 /* 570, 770x-JL */
1518 if (!acpi_evalf(sfan_handle, NULL, NULL, "vd", level))
1519 return -EIO;
1520 } else if (!gfan_handle && strlencmp(cmd, "enable") == 0) {
1521 /* all except 570, 600e/x, 770e, 770x */
1522 if (!acpi_ec_write(fan_status_offset, 0x80))
1523 return -EIO;
1524 } else if (!gfan_handle && strlencmp(cmd, "disable") == 0) {
1525 /* all except 570, 600e/x, 770e, 770x */
1526 if (!acpi_ec_write(fan_status_offset, 0x00))
1527 return -EIO;
1528 } else if (fans_handle &&
1529 sscanf(cmd, "speed %d", &speed) == 1 &&
1530 speed >= 0 && speed <= 65535) {
1531 /* X31, X40 */
1532 if (!acpi_evalf(fans_handle, NULL, NULL, "vddd",
1533 speed, speed, speed))
1534 return -EIO;
1535 } else
1536 return -EINVAL;
1537 }
1538
1539 return 0;
1540 }
1541
1542 static struct ibm_struct ibms[] = {
1543 {
1544 .name = "driver",
1545 .init = driver_init,
1546 .read = driver_read,
1547 },
1548 {
1549 .name = "hotkey",
1550 .hid = IBM_HKEY_HID,
1551 .init = hotkey_init,
1552 .read = hotkey_read,
1553 .write = hotkey_write,
1554 .exit = hotkey_exit,
1555 .notify = hotkey_notify,
1556 .handle = &hkey_handle,
1557 .type = ACPI_DEVICE_NOTIFY,
1558 },
1559 {
1560 .name = "bluetooth",
1561 .init = bluetooth_init,
1562 .read = bluetooth_read,
1563 .write = bluetooth_write,
1564 },
1565 {
1566 .name = "video",
1567 .init = video_init,
1568 .read = video_read,
1569 .write = video_write,
1570 .exit = video_exit,
1571 },
1572 {
1573 .name = "light",
1574 .init = light_init,
1575 .read = light_read,
1576 .write = light_write,
1577 },
1578 #ifdef CONFIG_ACPI_IBM_DOCK
1579 {
1580 .name = "dock",
1581 .read = dock_read,
1582 .write = dock_write,
1583 .notify = dock_notify,
1584 .handle = &dock_handle,
1585 .type = ACPI_SYSTEM_NOTIFY,
1586 },
1587 {
1588 .name = "dock",
1589 .hid = IBM_PCI_HID,
1590 .notify = dock_notify,
1591 .handle = &pci_handle,
1592 .type = ACPI_SYSTEM_NOTIFY,
1593 },
1594 #endif
1595 {
1596 .name = "bay",
1597 .init = bay_init,
1598 .read = bay_read,
1599 .write = bay_write,
1600 .notify = bay_notify,
1601 .handle = &bay_handle,
1602 .type = ACPI_SYSTEM_NOTIFY,
1603 },
1604 {
1605 .name = "cmos",
1606 .read = cmos_read,
1607 .write = cmos_write,
1608 },
1609 {
1610 .name = "led",
1611 .init = led_init,
1612 .read = led_read,
1613 .write = led_write,
1614 },
1615 {
1616 .name = "beep",
1617 .read = beep_read,
1618 .write = beep_write,
1619 },
1620 {
1621 .name = "thermal",
1622 .init = thermal_init,
1623 .read = thermal_read,
1624 },
1625 {
1626 .name = "ecdump",
1627 .read = ecdump_read,
1628 .write = ecdump_write,
1629 .experimental = 1,
1630 },
1631 {
1632 .name = "brightness",
1633 .read = brightness_read,
1634 .write = brightness_write,
1635 .experimental = 1,
1636 },
1637 {
1638 .name = "volume",
1639 .read = volume_read,
1640 .write = volume_write,
1641 .experimental = 1,
1642 },
1643 {
1644 .name = "fan",
1645 .read = fan_read,
1646 .write = fan_write,
1647 .experimental = 1,
1648 },
1649 };
1650
1651 static int dispatch_read(char *page, char **start, off_t off, int count,
1652 int *eof, void *data)
1653 {
1654 struct ibm_struct *ibm = (struct ibm_struct *)data;
1655 int len;
1656
1657 if (!ibm || !ibm->read)
1658 return -EINVAL;
1659
1660 len = ibm->read(page);
1661 if (len < 0)
1662 return len;
1663
1664 if (len <= off + count)
1665 *eof = 1;
1666 *start = page + off;
1667 len -= off;
1668 if (len > count)
1669 len = count;
1670 if (len < 0)
1671 len = 0;
1672
1673 return len;
1674 }
1675
1676 static int dispatch_write(struct file *file, const char __user * userbuf,
1677 unsigned long count, void *data)
1678 {
1679 struct ibm_struct *ibm = (struct ibm_struct *)data;
1680 char *kernbuf;
1681 int ret;
1682
1683 if (!ibm || !ibm->write)
1684 return -EINVAL;
1685
1686 kernbuf = kmalloc(count + 2, GFP_KERNEL);
1687 if (!kernbuf)
1688 return -ENOMEM;
1689
1690 if (copy_from_user(kernbuf, userbuf, count)) {
1691 kfree(kernbuf);
1692 return -EFAULT;
1693 }
1694
1695 kernbuf[count] = 0;
1696 strcat(kernbuf, ",");
1697 ret = ibm->write(kernbuf);
1698 if (ret == 0)
1699 ret = count;
1700
1701 kfree(kernbuf);
1702
1703 return ret;
1704 }
1705
1706 static void dispatch_notify(acpi_handle handle, u32 event, void *data)
1707 {
1708 struct ibm_struct *ibm = (struct ibm_struct *)data;
1709
1710 if (!ibm || !ibm->notify)
1711 return;
1712
1713 ibm->notify(ibm, event);
1714 }
1715
1716 static int __init setup_notify(struct ibm_struct *ibm)
1717 {
1718 acpi_status status;
1719 int ret;
1720
1721 if (!*ibm->handle)
1722 return 0;
1723
1724 ret = acpi_bus_get_device(*ibm->handle, &ibm->device);
1725 if (ret < 0) {
1726 printk(IBM_ERR "%s device not present\n", ibm->name);
1727 return 0;
1728 }
1729
1730 acpi_driver_data(ibm->device) = ibm;
1731 sprintf(acpi_device_class(ibm->device), "%s/%s", IBM_NAME, ibm->name);
1732
1733 status = acpi_install_notify_handler(*ibm->handle, ibm->type,
1734 dispatch_notify, ibm);
1735 if (ACPI_FAILURE(status)) {
1736 printk(IBM_ERR "acpi_install_notify_handler(%s) failed: %d\n",
1737 ibm->name, status);
1738 return -ENODEV;
1739 }
1740
1741 return 0;
1742 }
1743
1744 static int __init ibm_device_add(struct acpi_device *device)
1745 {
1746 return 0;
1747 }
1748
1749 static int __init register_driver(struct ibm_struct *ibm)
1750 {
1751 int ret;
1752
1753 ibm->driver = kmalloc(sizeof(struct acpi_driver), GFP_KERNEL);
1754 if (!ibm->driver) {
1755 printk(IBM_ERR "kmalloc(ibm->driver) failed\n");
1756 return -1;
1757 }
1758
1759 memset(ibm->driver, 0, sizeof(struct acpi_driver));
1760 sprintf(ibm->driver->name, "%s/%s", IBM_NAME, ibm->name);
1761 ibm->driver->ids = ibm->hid;
1762 ibm->driver->ops.add = &ibm_device_add;
1763
1764 ret = acpi_bus_register_driver(ibm->driver);
1765 if (ret < 0) {
1766 printk(IBM_ERR "acpi_bus_register_driver(%s) failed: %d\n",
1767 ibm->hid, ret);
1768 kfree(ibm->driver);
1769 }
1770
1771 return ret;
1772 }
1773
1774 static int __init ibm_init(struct ibm_struct *ibm)
1775 {
1776 int ret;
1777 struct proc_dir_entry *entry;
1778
1779 if (ibm->experimental && !experimental)
1780 return 0;
1781
1782 if (ibm->hid) {
1783 ret = register_driver(ibm);
1784 if (ret < 0)
1785 return ret;
1786 ibm->driver_registered = 1;
1787 }
1788
1789 if (ibm->init) {
1790 ret = ibm->init();
1791 if (ret != 0)
1792 return ret;
1793 ibm->init_called = 1;
1794 }
1795
1796 if (ibm->read) {
1797 entry = create_proc_entry(ibm->name,
1798 S_IFREG | S_IRUGO | S_IWUSR,
1799 proc_dir);
1800 if (!entry) {
1801 printk(IBM_ERR "unable to create proc entry %s\n",
1802 ibm->name);
1803 return -ENODEV;
1804 }
1805 entry->owner = THIS_MODULE;
1806 entry->data = ibm;
1807 entry->read_proc = &dispatch_read;
1808 if (ibm->write)
1809 entry->write_proc = &dispatch_write;
1810 ibm->proc_created = 1;
1811 }
1812
1813 if (ibm->notify) {
1814 ret = setup_notify(ibm);
1815 if (ret < 0)
1816 return ret;
1817 ibm->notify_installed = 1;
1818 }
1819
1820 return 0;
1821 }
1822
1823 static void ibm_exit(struct ibm_struct *ibm)
1824 {
1825 if (ibm->notify_installed)
1826 acpi_remove_notify_handler(*ibm->handle, ibm->type,
1827 dispatch_notify);
1828
1829 if (ibm->proc_created)
1830 remove_proc_entry(ibm->name, proc_dir);
1831
1832 if (ibm->init_called && ibm->exit)
1833 ibm->exit();
1834
1835 if (ibm->driver_registered) {
1836 acpi_bus_unregister_driver(ibm->driver);
1837 kfree(ibm->driver);
1838 }
1839 }
1840
1841 static void __init ibm_handle_init(char *name,
1842 acpi_handle * handle, acpi_handle parent,
1843 char **paths, int num_paths, char **path)
1844 {
1845 int i;
1846 acpi_status status;
1847
1848 for (i = 0; i < num_paths; i++) {
1849 status = acpi_get_handle(parent, paths[i], handle);
1850 if (ACPI_SUCCESS(status)) {
1851 *path = paths[i];
1852 return;
1853 }
1854 }
1855
1856 *handle = NULL;
1857 }
1858
1859 #define IBM_HANDLE_INIT(object) \
1860 ibm_handle_init(#object, &object##_handle, *object##_parent, \
1861 object##_paths, ARRAY_SIZE(object##_paths), &object##_path)
1862
1863 static int set_ibm_param(const char *val, struct kernel_param *kp)
1864 {
1865 unsigned int i;
1866
1867 for (i = 0; i < ARRAY_SIZE(ibms); i++)
1868 if (strcmp(ibms[i].name, kp->name) == 0 && ibms[i].write) {
1869 if (strlen(val) > sizeof(ibms[i].param) - 2)
1870 return -ENOSPC;
1871 strcpy(ibms[i].param, val);
1872 strcat(ibms[i].param, ",");
1873 return 0;
1874 }
1875
1876 return -EINVAL;
1877 }
1878
1879 #define IBM_PARAM(feature) \
1880 module_param_call(feature, set_ibm_param, NULL, NULL, 0)
1881
1882 IBM_PARAM(hotkey);
1883 IBM_PARAM(bluetooth);
1884 IBM_PARAM(video);
1885 IBM_PARAM(light);
1886 #ifdef CONFIG_ACPI_IBM_DOCK
1887 IBM_PARAM(dock);
1888 #endif
1889 IBM_PARAM(bay);
1890 IBM_PARAM(cmos);
1891 IBM_PARAM(led);
1892 IBM_PARAM(beep);
1893 IBM_PARAM(ecdump);
1894 IBM_PARAM(brightness);
1895 IBM_PARAM(volume);
1896 IBM_PARAM(fan);
1897
1898 static void acpi_ibm_exit(void)
1899 {
1900 int i;
1901
1902 for (i = ARRAY_SIZE(ibms) - 1; i >= 0; i--)
1903 ibm_exit(&ibms[i]);
1904
1905 remove_proc_entry(IBM_DIR, acpi_root_dir);
1906 }
1907
1908 static int __init acpi_ibm_init(void)
1909 {
1910 int ret, i;
1911
1912 if (acpi_disabled)
1913 return -ENODEV;
1914
1915 if (!acpi_specific_hotkey_enabled) {
1916 printk(IBM_ERR "using generic hotkey driver\n");
1917 return -ENODEV;
1918 }
1919
1920 /* ec is required because many other handles are relative to it */
1921 IBM_HANDLE_INIT(ec);
1922 if (!ec_handle) {
1923 printk(IBM_ERR "ec object not found\n");
1924 return -ENODEV;
1925 }
1926
1927 /* these handles are not required */
1928 IBM_HANDLE_INIT(vid);
1929 IBM_HANDLE_INIT(vid2);
1930 IBM_HANDLE_INIT(ledb);
1931 IBM_HANDLE_INIT(led);
1932 IBM_HANDLE_INIT(hkey);
1933 IBM_HANDLE_INIT(lght);
1934 IBM_HANDLE_INIT(cmos);
1935 #ifdef CONFIG_ACPI_IBM_DOCK
1936 IBM_HANDLE_INIT(dock);
1937 #endif
1938 IBM_HANDLE_INIT(pci);
1939 IBM_HANDLE_INIT(bay);
1940 if (bay_handle)
1941 IBM_HANDLE_INIT(bay_ej);
1942 IBM_HANDLE_INIT(bay2);
1943 if (bay2_handle)
1944 IBM_HANDLE_INIT(bay2_ej);
1945 IBM_HANDLE_INIT(beep);
1946 IBM_HANDLE_INIT(ecrd);
1947 IBM_HANDLE_INIT(ecwr);
1948 IBM_HANDLE_INIT(fans);
1949 IBM_HANDLE_INIT(gfan);
1950 IBM_HANDLE_INIT(sfan);
1951
1952 proc_dir = proc_mkdir(IBM_DIR, acpi_root_dir);
1953 if (!proc_dir) {
1954 printk(IBM_ERR "unable to create proc dir %s", IBM_DIR);
1955 return -ENODEV;
1956 }
1957 proc_dir->owner = THIS_MODULE;
1958
1959 for (i = 0; i < ARRAY_SIZE(ibms); i++) {
1960 ret = ibm_init(&ibms[i]);
1961 if (ret >= 0 && *ibms[i].param)
1962 ret = ibms[i].write(ibms[i].param);
1963 if (ret < 0) {
1964 acpi_ibm_exit();
1965 return ret;
1966 }
1967 }
1968
1969 return 0;
1970 }
1971
1972 module_init(acpi_ibm_init);
1973 module_exit(acpi_ibm_exit);
kernel source for telekom puls (alcatel/mediatek)