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ACPI: ibm-acpi: trivial Lindent cleanups
[deliverable/linux.git] / drivers / acpi / ibm_acpi.c
CommitLineData
1da177e4
LT		 1/*
2 * ibm_acpi.c - IBM ThinkPad ACPI Extras
3 *
4 *
78f81cc4 5 * Copyright (C) 2004-2005 Borislav Deianov <borislav@users.sf.net>
1da177e4
LT		 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
78f81cc4
BD		 20 */
21
22#define IBM_VERSION "0.12a"
23
24/*
1da177e4 25 * Changelog:
78f81cc4
BD		 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
1da177e4
LT		 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
78f81cc4
BD		 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
1da177e4
LT		 74 */
75
1da177e4
LT		 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>
8acb0250 81#include <linux/backlight.h>
1da177e4
LT		 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
78f81cc4
BD		 92MODULE_AUTHOR("Borislav Deianov");
93MODULE_DESCRIPTION(IBM_DESC);
94MODULE_VERSION(IBM_VERSION);
95MODULE_LICENSE("GPL");
96
1da177e4
LT		 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
109static int experimental;
110module_param(experimental, int, 0);
111
112static 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; \
78f81cc4 117 static char *object##_path; \
1da177e4
LT		 118 static char *object##_paths[] = { paths }
119
78f81cc4
BD		 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
142IBM_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
151IBM_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
158IBM_HANDLE(vid2, root, "\\_SB.PCI0.AGPB.VID"); /* G41 */
159
160IBM_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 */
63e5f248 164#ifdef CONFIG_ACPI_IBM_DOCK
78f81cc4
BD		 165IBM_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 */
63e5f248 170#endif
78f81cc4
BD		 171IBM_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
176IBM_HANDLE(bay_ej, bay, "_EJ3", /* 600e/x, A2xm/p, A3x */
177 "_EJ0", /* all others */
178 ); /* 570,A21e,G4x,R30,R31,R32,R40e,R50e */
179
180IBM_HANDLE(bay2, root, "\\_SB.PCI0.IDE0.PRIM.SLAV", /* A3x, R32 */
181 "\\_SB.PCI0.IDE0.IDEP.IDPS", /* 600e/x, 770e, 770x */
182 ); /* all others */
183
184IBM_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 */
189IBM_HANDLE(pci, root, "\\_SB.PCI"); /* 570 */
190
191IBM_HANDLE(hkey, ec, "\\_SB.HKEY", /* 600e/x, 770e, 770x */
192 "^HKEY", /* R30, R31 */
193 "HKEY", /* all others */
194 ); /* 570 */
195
196IBM_HANDLE(lght, root, "\\LGHT"); /* A21e, A2xm/p, T20-22, X20-21 */
197IBM_HANDLE(ledb, ec, "LEDB"); /* G4x */
198
199IBM_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
204IBM_HANDLE(beep, ec, "BEEP"); /* all except R30, R31 */
205IBM_HANDLE(ecrd, ec, "ECRD"); /* 570 */
206IBM_HANDLE(ecwr, ec, "ECWR"); /* 570 */
207IBM_HANDLE(fans, ec, "FANS"); /* X31, X40 */
208
209IBM_HANDLE(gfan, ec, "GFAN", /* 570 */
210 "\\FSPD", /* 600e/x, 770e, 770x */
211 ); /* all others */
212
213IBM_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"
1da177e4
LT		 219
220struct ibm_struct {
221 char *name;
78f81cc4 222 char param[32];
1da177e4
LT		 223
224 char *hid;
225 struct acpi_driver *driver;
1da177e4 226
78f81cc4
BD		 227 int (*init) (void);
228 int (*read) (char *);
229 int (*write) (char *);
230 void (*exit) (void);
231
232 void (*notify) (struct ibm_struct *, u32);
1da177e4
LT		 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
1da177e4
LT		 242 int experimental;
243};
244
245static struct proc_dir_entry *proc_dir = NULL;
246
8acb0250
HM		 247static struct backlight_device *ibm_backlight_device;
248
1da177e4
LT		 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
253static int acpi_evalf(acpi_handle handle,
254 void *res, char *method, char *fmt, ...)
255{
256 char *fmt0 = fmt;
78f81cc4
BD		 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;
1da177e4
LT		 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;
78f81cc4 291 /* add more types as needed */
1da177e4
LT		 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
78f81cc4
BD		 300 if (res_type != 'v') {
301 result.length = sizeof(out_obj);
302 result.pointer = &out_obj;
303 resultp = &result;
304 } else
305 resultp = NULL;
1da177e4 306
78f81cc4 307 status = acpi_evaluate_object(handle, method, &params, resultp);
1da177e4
LT		 308
309 switch (res_type) {
78f81cc4 310 case 'd': /* int */
1da177e4
LT		 311 if (res)
312 *(int *)res = out_obj.integer.value;
313 success = status == AE_OK && out_obj.type == ACPI_TYPE_INTEGER;
314 break;
78f81cc4 315 case 'v': /* void */
1da177e4
LT		 316 success = status == AE_OK;
317 break;
78f81cc4 318 /* add more types as needed */
1da177e4
LT		 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
332static 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
342static 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
78f81cc4 358static int driver_init(void)
1da177e4
LT		 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
78f81cc4 366static int driver_read(char *p)
1da177e4
LT		 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
78f81cc4
BD		 376static int hotkey_supported;
377static int hotkey_mask_supported;
378static int hotkey_orig_status;
379static int hotkey_orig_mask;
380
381static int hotkey_get(int *status, int *mask)
1da177e4
LT		 382{
383 if (!acpi_evalf(hkey_handle, status, "DHKC", "d"))
78f81cc4
BD		 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;
1da177e4
LT		 391}
392
78f81cc4 393static int hotkey_set(int status, int mask)
1da177e4
LT		 394{
395 int i;
396
397 if (!acpi_evalf(hkey_handle, NULL, "MHKC", "vd", status))
1da177e4
LT		 398 return 0;
399
78f81cc4
BD		 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 }
1da177e4 407
78f81cc4 408 return 1;
1da177e4
LT		 409}
410
78f81cc4 411static int hotkey_init(void)
1da177e4 412{
78f81cc4
BD		 413 /* hotkey not supported on 570 */
414 hotkey_supported = hkey_handle != NULL;
1da177e4 415
78f81cc4
BD		 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;
1da177e4
LT		 424 }
425
78f81cc4
BD		 426 return 0;
427}
1da177e4 428
78f81cc4 429static int hotkey_read(char *p)
1da177e4
LT		 430{
431 int status, mask;
432 int len = 0;
433
78f81cc4
BD		 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))
1da177e4
LT		 440 return -EIO;
441
442 len += sprintf(p + len, "status:\t\t%s\n", enabled(status, 0));
78f81cc4 443 if (hotkey_mask_supported) {
1da177e4
LT		 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
78f81cc4 455static int hotkey_write(char *buf)
1da177e4
LT		 456{
457 int status, mask;
458 char *cmd;
459 int do_cmd = 0;
460
78f81cc4 461 if (!hotkey_supported)
1da177e4
LT		 462 return -ENODEV;
463
78f81cc4
BD		 464 if (!hotkey_get(&status, &mask))
465 return -EIO;
466
1da177e4
LT		 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) {
78f81cc4
BD		 473 status = hotkey_orig_status;
474 mask = hotkey_orig_mask;
1da177e4
LT		 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
78f81cc4 484 if (do_cmd && !hotkey_set(status, mask))
1da177e4
LT		 485 return -EIO;
486
487 return 0;
78f81cc4 488}
1da177e4 489
78f81cc4 490static void hotkey_exit(void)
1da177e4 491{
78f81cc4
BD		 492 if (hotkey_supported)
493 hotkey_set(hotkey_orig_status, hotkey_orig_mask);
1da177e4
LT		 494}
495
496static 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);
78f81cc4 505 }
1da177e4
LT		 506}
507
78f81cc4
BD		 508static int bluetooth_supported;
509
510static int bluetooth_init(void)
1da177e4 511{
78f81cc4
BD		 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");
1da177e4
LT		 516
517 return 0;
518}
519
78f81cc4 520static int bluetooth_status(void)
1da177e4
LT		 521{
522 int status;
523
78f81cc4
BD		 524 if (!bluetooth_supported ||
525 !acpi_evalf(hkey_handle, &status, "GBDC", "d"))
1da177e4
LT		 526 status = 0;
527
528 return status;
529}
530
78f81cc4 531static int bluetooth_read(char *p)
1da177e4
LT		 532{
533 int len = 0;
78f81cc4 534 int status = bluetooth_status();
1da177e4 535
78f81cc4 536 if (!bluetooth_supported)
1da177e4
LT		 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
78f81cc4 548static int bluetooth_write(char *buf)
1da177e4 549{
78f81cc4 550 int status = bluetooth_status();
1da177e4
LT		 551 char *cmd;
552 int do_cmd = 0;
553
78f81cc4
BD		 554 if (!bluetooth_supported)
555 return -ENODEV;
1da177e4
LT		 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))
78f81cc4 568 return -EIO;
1da177e4
LT		 569
570 return 0;
571}
572
42adb53c
JF		 573static int wan_supported;
574
575static int wan_init(void)
576{
577 wan_supported = hkey_handle &&
578 acpi_evalf(hkey_handle, NULL, "GWAN", "qv");
579
580 return 0;
581}
582
583static int wan_status(void)
584{
585 int status;
586
8d297264 587 if (!wan_supported || !acpi_evalf(hkey_handle, &status, "GWAN", "d"))
42adb53c
JF		 588 status = 0;
589
590 return status;
591}
592
593static 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
610static 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
78f81cc4
BD		 635static int video_supported;
636static int video_orig_autosw;
637
638#define VIDEO_570 1
639#define VIDEO_770 2
640#define VIDEO_NEW 3
641
642static int video_init(void)
1da177e4 643{
78f81cc4
BD		 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;
1da177e4
LT		 662
663 return 0;
664}
665
78f81cc4 666static int video_status(void)
1da177e4
LT		 667{
668 int status = 0;
669 int i;
670
78f81cc4
BD		 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}
1da177e4 693
78f81cc4
BD		 694static int video_autosw(void)
695{
696 int autosw = 0;
1da177e4 697
78f81cc4
BD		 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");
1da177e4 702
78f81cc4 703 return autosw & 1;
1da177e4
LT		 704}
705
78f81cc4 706static int video_read(char *p)
1da177e4 707{
78f81cc4
BD		 708 int status = video_status();
709 int autosw = video_autosw();
1da177e4
LT		 710 int len = 0;
711
78f81cc4
BD		 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");
1da177e4
LT		 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));
78f81cc4
BD		 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");
1da177e4
LT		 728 len += sprintf(p + len, "commands:\tvideo_switch, expand_toggle\n");
729
730 return len;
731}
732
78f81cc4
BD		 733static 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
748static 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
758static 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
782static int video_write(char *buf)
1da177e4
LT		 783{
784 char *cmd;
785 int enable, disable, status;
786
78f81cc4
BD		 787 if (!video_supported)
788 return -ENODEV;
789
1da177e4
LT		 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;
78f81cc4
BD		 801 } else if (video_supported == VIDEO_NEW &&
802 strlencmp(cmd, "dvi_enable") == 0) {
1da177e4 803 enable |= 0x08;
78f81cc4
BD		 804 } else if (video_supported == VIDEO_NEW &&
805 strlencmp(cmd, "dvi_disable") == 0) {
1da177e4
LT		 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) {
78f81cc4 814 if (!video_switch())
1da177e4
LT		 815 return -EIO;
816 } else if (strlencmp(cmd, "expand_toggle") == 0) {
78f81cc4 817 if (!video_expand())
1da177e4
LT		 818 return -EIO;
819 } else
820 return -EINVAL;
821 }
822
823 if (enable || disable) {
78f81cc4
BD		 824 status = (video_status() & 0x0f & ~disable) | enable;
825 if (!video_switch2(status))
1da177e4
LT		 826 return -EIO;
827 }
828
829 return 0;
830}
831
78f81cc4 832static void video_exit(void)
1da177e4 833{
78f81cc4 834 acpi_evalf(vid_handle, NULL, "_DOS", "vd", video_orig_autosw);
1da177e4
LT		 835}
836
78f81cc4
BD		 837static int light_supported;
838static int light_status_supported;
839
840static int light_init(void)
1da177e4 841{
78f81cc4
BD		 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");
1da177e4
LT		 850
851 return 0;
852}
853
78f81cc4 854static int light_read(char *p)
1da177e4
LT		 855{
856 int len = 0;
857 int status = 0;
858
78f81cc4
BD		 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 {
1da177e4
LT		 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));
78f81cc4
BD		 868 len += sprintf(p + len, "commands:\ton, off\n");
869 }
1da177e4
LT		 870
871 return len;
872}
873
78f81cc4 874static int light_write(char *buf)
1da177e4
LT		 875{
876 int cmos_cmd, lght_cmd;
877 char *cmd;
878 int success;
78f81cc4
BD		 879
880 if (!light_supported)
881 return -ENODEV;
882
1da177e4
LT		 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;
78f81cc4 892
1da177e4 893 success = cmos_handle ?
78f81cc4
BD		 894 acpi_evalf(cmos_handle, NULL, NULL, "vd", cmos_cmd) :
895 acpi_evalf(lght_handle, NULL, NULL, "vd", lght_cmd);
1da177e4
LT		 896 if (!success)
897 return -EIO;
898 }
899
900 return 0;
901}
902
903static 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}
8d297264 912
63e5f248 913#ifdef CONFIG_ACPI_IBM_DOCK
1da177e4
LT		 914#define dock_docked() (_sta(dock_handle) & 1)
915
78f81cc4 916static int dock_read(char *p)
1da177e4
LT		 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
78f81cc4 933static int dock_write(char *buf)
1da177e4
LT		 934{
935 char *cmd;
936
937 if (!dock_docked())
78f81cc4 938 return -ENODEV;
1da177e4
LT		 939
940 while ((cmd = next_cmd(&buf))) {
941 if (strlencmp(cmd, "undock") == 0) {
78f81cc4
BD		 942 if (!acpi_evalf(dock_handle, NULL, "_DCK", "vd", 0) ||
943 !acpi_evalf(dock_handle, NULL, "_EJ0", "vd", 1))
1da177e4
LT		 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;
78f81cc4 953}
1da177e4
LT		 954
955static void dock_notify(struct ibm_struct *ibm, u32 event)
956{
957 int docked = dock_docked();
78f81cc4
BD		 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 */
1da177e4 966 else if (event == 3 && !docked)
78f81cc4 967 acpi_bus_generate_event(ibm->device, event, 2); /* undock */
1da177e4 968 else if (event == 0 && docked)
78f81cc4 969 acpi_bus_generate_event(ibm->device, event, 3); /* dock */
1da177e4
LT		 970 else {
971 printk(IBM_ERR "unknown dock event %d, status %d\n",
972 event, _sta(dock_handle));
78f81cc4 973 acpi_bus_generate_event(ibm->device, event, 0); /* unknown */
1da177e4
LT		 974 }
975}
63e5f248 976#endif
1da177e4 977
78f81cc4
BD		 978static int bay_status_supported;
979static int bay_status2_supported;
980static int bay_eject_supported;
981static int bay_eject2_supported;
1da177e4 982
78f81cc4 983static int bay_init(void)
1da177e4 984{
78f81cc4
BD		 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);
1da177e4
LT		 994
995 return 0;
996}
997
78f81cc4
BD		 998#define bay_occupied(b) (_sta(b##_handle) & 1)
999
1000static int bay_read(char *p)
1da177e4
LT		 1001{
1002 int len = 0;
78f81cc4
BD		 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)
1da177e4 1020 len += sprintf(p + len, "commands:\teject\n");
78f81cc4
BD		 1021 else if (eject2)
1022 len += sprintf(p + len, "commands:\teject2\n");
1da177e4
LT		 1023
1024 return len;
1025}
1026
78f81cc4 1027static int bay_write(char *buf)
1da177e4
LT		 1028{
1029 char *cmd;
1030
78f81cc4
BD		 1031 if (!bay_eject_supported && !bay_eject2_supported)
1032 return -ENODEV;
1033
1da177e4 1034 while ((cmd = next_cmd(&buf))) {
78f81cc4
BD		 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))
1da177e4
LT		 1041 return -EIO;
1042 } else
1043 return -EINVAL;
1044 }
1045
1046 return 0;
78f81cc4 1047}
1da177e4
LT		 1048
1049static void bay_notify(struct ibm_struct *ibm, u32 event)
1050{
1051 acpi_bus_generate_event(ibm->device, event, 0);
1052}
1053
78f81cc4 1054static int cmos_read(char *p)
1da177e4
LT		 1055{
1056 int len = 0;
1057
78f81cc4
BD		 1058 /* cmos not supported on 570, 600e/x, 770e, 770x, A21e, A2xm/p,
1059 R30, R31, T20-22, X20-21 */
1da177e4
LT		 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");
78f81cc4 1064 len += sprintf(p + len, "commands:\t<cmd> (<cmd> is 0-21)\n");
1da177e4
LT		 1065 }
1066
1067 return len;
1068}
1069
78f81cc4
BD		 1070static 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
1078static int cmos_write(char *buf)
1da177e4
LT		 1079{
1080 char *cmd;
1081 int cmos_cmd;
1082
1083 if (!cmos_handle)
1084 return -EINVAL;
1085
1086 while ((cmd = next_cmd(&buf))) {
78f81cc4
BD		 1087 if (sscanf(cmd, "%u", &cmos_cmd) == 1 &&
1088 cmos_cmd >= 0 && cmos_cmd <= 21) {
1da177e4
LT		 1089 /* cmos_cmd set */
1090 } else
1091 return -EINVAL;
1092
78f81cc4 1093 if (!cmos_eval(cmos_cmd))
1da177e4
LT		 1094 return -EIO;
1095 }
1096
1097 return 0;
78f81cc4
BD		 1098}
1099
1100static int led_supported;
1101
1102#define LED_570 1
1103#define LED_OLD 2
1104#define LED_NEW 3
1105
1106static 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
1126static int led_read(char *p)
1da177e4
LT		 1127{
1128 int len = 0;
1129
78f81cc4
BD		 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
1da177e4 1148 len += sprintf(p + len, "commands:\t"
78f81cc4 1149 "<led> on, <led> off, <led> blink (<led> is 0-7)\n");
1da177e4
LT		 1150
1151 return len;
1152}
1153
78f81cc4
BD		 1154/* off, on, blink */
1155static const int led_sled_arg1[] = { 0, 1, 3 };
1156static const int led_exp_hlbl[] = { 0, 0, 1 }; /* led# * */
1157static const int led_exp_hlcl[] = { 0, 1, 1 }; /* led# * */
1158static 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
1164static int led_write(char *buf)
1da177e4
LT		 1165{
1166 char *cmd;
78f81cc4
BD		 1167 int led, ind, ret;
1168
1169 if (!led_supported)
1170 return -ENODEV;
1da177e4
LT		 1171
1172 while ((cmd = next_cmd(&buf))) {
78f81cc4 1173 if (sscanf(cmd, "%d", &led) != 1 || led < 0 || led > 7)
1da177e4
LT		 1174 return -EINVAL;
1175
78f81cc4
BD		 1176 if (strstr(cmd, "off")) {
1177 ind = 0;
1da177e4 1178 } else if (strstr(cmd, "on")) {
78f81cc4
BD		 1179 ind = 1;
1180 } else if (strstr(cmd, "blink")) {
1181 ind = 2;
1da177e4
LT		 1182 } else
1183 return -EINVAL;
78f81cc4
BD		 1184
1185 if (led_supported == LED_570) {
1186 /* 570 */
1187 led = 1 << led;
1da177e4 1188 if (!acpi_evalf(led_handle, NULL, NULL, "vdd",
78f81cc4 1189 led, led_sled_arg1[ind]))
1da177e4 1190 return -EIO;
78f81cc4
BD		 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]))
1da177e4 1207 return -EIO;
78f81cc4
BD		 1208 }
1209 }
1210
1211 return 0;
1212}
1213
1214static 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
1228static 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
1249static 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
1265static 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
1278static int thermal_tmp_supported;
1279static int thermal_updt_supported;
1280
1281static 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
1292static 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
1326static u8 ecdump_regs[256];
1327
1328static 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
1363static 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))
1da177e4
LT		 1377 return -EIO;
1378 } else
1379 return -EINVAL;
1380 }
1381
1382 return 0;
78f81cc4
BD		 1383}
1384
1385static int brightness_offset = 0x31;
1386
8acb0250
HM		 1387static int brightness_get(struct backlight_device *bd)
1388{
8d297264
HMH		 1389 u8 level;
1390 if (!acpi_ec_read(brightness_offset, &level))
1391 return -EIO;
8acb0250 1392
8d297264
HMH		 1393 level &= 0x7;
1394 return level;
8acb0250
HM		 1395}
1396
78f81cc4 1397static int brightness_read(char *p)
1da177e4
LT		 1398{
1399 int len = 0;
8acb0250 1400 int level;
1da177e4 1401
8acb0250 1402 if ((level = brightness_get(NULL)) < 0) {
78f81cc4
BD		 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 }
1da177e4
LT		 1410
1411 return len;
1412}
1413
78f81cc4
BD		 1414#define BRIGHTNESS_UP 4
1415#define BRIGHTNESS_DOWN 5
1416
8acb0250 1417static int brightness_set(int value)
1da177e4 1418{
78f81cc4 1419 int cmos_cmd, inc, i;
8acb0250
HM		 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
1436static int brightness_write(char *buf)
1437{
1438 int level;
78f81cc4 1439 int new_level;
1da177e4 1440 char *cmd;
1da177e4
LT		 1441
1442 while ((cmd = next_cmd(&buf))) {
8acb0250
HM		 1443 if ((level = brightness_get(NULL)) < 0)
1444 return level;
78f81cc4
BD		 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
8acb0250 1457 brightness_set(new_level);
78f81cc4
BD		 1458 }
1459
1460 return 0;
1461}
1462
8acb0250
HM		 1463static int brightness_update_status(struct backlight_device *bd)
1464{
1465 return brightness_set(bd->props->brightness);
1466}
1467
78f81cc4
BD		 1468static int volume_offset = 0x30;
1469
1470static 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
1492static 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;
1da177e4
LT		 1520 } else
1521 return -EINVAL;
1522
78f81cc4
BD		 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
1554static int fan_status_offset = 0x2f;
1555static int fan_rpm_offset = 0x84;
1556
1557static 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"))
1da177e4 1566 return -EIO;
78f81cc4
BD		 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
1600static 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;
1da177e4
LT		 1629 }
1630
1631 return 0;
78f81cc4
BD		 1632}
1633
1da177e4
LT		 1634static struct ibm_struct ibms[] = {
1635 {
78f81cc4
BD		 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 },
42adb53c
JF		 1657 {
1658 .name = "wan",
1659 .init = wan_init,
1660 .read = wan_read,
1661 .write = wan_write,
1662 .experimental = 1,
1663 },
78f81cc4
BD		 1664 {
1665 .name = "video",
1666 .init = video_init,
1667 .read = video_read,
1668 .write = video_write,
1669 .exit = video_exit,
1670 },
1da177e4 1671 {
78f81cc4
BD		 1672 .name = "light",
1673 .init = light_init,
1674 .read = light_read,
1675 .write = light_write,
1676 },
63e5f248 1677#ifdef CONFIG_ACPI_IBM_DOCK
1da177e4 1678 {
78f81cc4
BD		 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 },
1da177e4 1686 {
78f81cc4
BD		 1687 .name = "dock",
1688 .hid = IBM_PCI_HID,
1689 .notify = dock_notify,
1690 .handle = &pci_handle,
1691 .type = ACPI_SYSTEM_NOTIFY,
1692 },
63e5f248 1693#endif
1da177e4 1694 {
78f81cc4
BD		 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 },
1da177e4 1703 {
78f81cc4
BD		 1704 .name = "cmos",
1705 .read = cmos_read,
1706 .write = cmos_write,
1707 },
1da177e4 1708 {
78f81cc4
BD		 1709 .name = "led",
1710 .init = led_init,
1711 .read = led_read,
1712 .write = led_write,
1713 },
1da177e4 1714 {
78f81cc4
BD		 1715 .name = "beep",
1716 .read = beep_read,
1717 .write = beep_write,
1718 },
1da177e4 1719 {
78f81cc4
BD		 1720 .name = "thermal",
1721 .init = thermal_init,
1722 .read = thermal_read,
1723 },
1da177e4 1724 {
78f81cc4
BD		 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,
78f81cc4
BD		 1734 },
1735 {
1736 .name = "volume",
1737 .read = volume_read,
1738 .write = volume_write,
78f81cc4
BD		 1739 },
1740 {
1741 .name = "fan",
1742 .read = fan_read,
1743 .write = fan_write,
1744 .experimental = 1,
1745 },
1da177e4 1746};
1da177e4
LT		 1747
1748static int dispatch_read(char *page, char **start, off_t off, int count,
1749 int *eof, void *data)
1750{
1751 struct ibm_struct *ibm = (struct ibm_struct *)data;
1752 int len;
78f81cc4 1753
1da177e4
LT		 1754 if (!ibm || !ibm->read)
1755 return -EINVAL;
1756
78f81cc4 1757 len = ibm->read(page);
1da177e4
LT		 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
78f81cc4 1773static int dispatch_write(struct file *file, const char __user * userbuf,
1da177e4
LT		 1774 unsigned long count, void *data)
1775{
1776 struct ibm_struct *ibm = (struct ibm_struct *)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
78f81cc4 1787 if (copy_from_user(kernbuf, userbuf, count)) {
1da177e4 1788 kfree(kernbuf);
78f81cc4 1789 return -EFAULT;
1da177e4
LT		 1790 }
1791
1792 kernbuf[count] = 0;
1793 strcat(kernbuf, ",");
78f81cc4 1794 ret = ibm->write(kernbuf);
1da177e4
LT		 1795 if (ret == 0)
1796 ret = count;
1797
1798 kfree(kernbuf);
1799
78f81cc4 1800 return ret;
1da177e4
LT		 1801}
1802
1803static void dispatch_notify(acpi_handle handle, u32 event, void *data)
1804{
1805 struct ibm_struct *ibm = (struct ibm_struct *)data;
1806
1807 if (!ibm || !ibm->notify)
1808 return;
1809
1810 ibm->notify(ibm, event);
1811}
1812
78f81cc4 1813static int __init setup_notify(struct ibm_struct *ibm)
1da177e4
LT		 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
1da177e4
LT		 1838 return 0;
1839}
1840
78f81cc4 1841static int __init ibm_device_add(struct acpi_device *device)
1da177e4
LT		 1842{
1843 return 0;
1844}
1845
78f81cc4 1846static int __init register_driver(struct ibm_struct *ibm)
1da177e4
LT		 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));
3dfd35cd 1857 sprintf(ibm->driver->name, "%s_%s", IBM_NAME, ibm->name);
1da177e4 1858 ibm->driver->ids = ibm->hid;
78f81cc4 1859 ibm->driver->ops.add = &ibm_device_add;
1da177e4
LT		 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
78f81cc4 1871static int __init ibm_init(struct ibm_struct *ibm)
1da177e4
LT		 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) {
78f81cc4 1887 ret = ibm->init();
1da177e4
LT		 1888 if (ret != 0)
1889 return ret;
1890 ibm->init_called = 1;
1891 }
1892
78f81cc4
BD		 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;
1da177e4 1904 entry->read_proc = &dispatch_read;
78f81cc4
BD		 1905 if (ibm->write)
1906 entry->write_proc = &dispatch_write;
1907 ibm->proc_created = 1;
1908 }
1da177e4
LT		 1909
1910 if (ibm->notify) {
1911 ret = setup_notify(ibm);
1912 if (ret < 0)
1913 return ret;
78f81cc4 1914 ibm->notify_installed = 1;
1da177e4
LT		 1915 }
1916
1917 return 0;
1918}
1919
1920static 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)
78f81cc4 1930 ibm->exit();
1da177e4
LT		 1931
1932 if (ibm->driver_registered) {
1933 acpi_bus_unregister_driver(ibm->driver);
1934 kfree(ibm->driver);
1935 }
1936}
1937
78f81cc4
BD		 1938static void __init ibm_handle_init(char *name,
1939 acpi_handle * handle, acpi_handle parent,
1940 char **paths, int num_paths, char **path)
1da177e4
LT		 1941{
1942 int i;
1943 acpi_status status;
1944
78f81cc4 1945 for (i = 0; i < num_paths; i++) {
1da177e4 1946 status = acpi_get_handle(parent, paths[i], handle);
78f81cc4
BD		 1947 if (ACPI_SUCCESS(status)) {
1948 *path = paths[i];
1949 return;
1950 }
1da177e4
LT		 1951 }
1952
78f81cc4 1953 *handle = NULL;
1da177e4
LT		 1954}
1955
78f81cc4 1956#define IBM_HANDLE_INIT(object) \
1da177e4 1957 ibm_handle_init(#object, &object##_handle, *object##_parent, \
78f81cc4 1958 object##_paths, ARRAY_SIZE(object##_paths), &object##_path)
1da177e4
LT		 1959
1960static int set_ibm_param(const char *val, struct kernel_param *kp)
1961{
1962 unsigned int i;
1da177e4 1963
78f81cc4
BD		 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 }
1da177e4 1972
1da177e4
LT		 1973 return -EINVAL;
1974}
1975
1976#define IBM_PARAM(feature) \
1977 module_param_call(feature, set_ibm_param, NULL, NULL, 0)
1978
78f81cc4
BD		 1979IBM_PARAM(hotkey);
1980IBM_PARAM(bluetooth);
1981IBM_PARAM(video);
1982IBM_PARAM(light);
63e5f248 1983#ifdef CONFIG_ACPI_IBM_DOCK
78f81cc4 1984IBM_PARAM(dock);
63e5f248 1985#endif
78f81cc4
BD		 1986IBM_PARAM(bay);
1987IBM_PARAM(cmos);
1988IBM_PARAM(led);
1989IBM_PARAM(beep);
1990IBM_PARAM(ecdump);
1991IBM_PARAM(brightness);
1992IBM_PARAM(volume);
1993IBM_PARAM(fan);
1994
8acb0250 1995static struct backlight_properties ibm_backlight_data = {
8d297264
HMH		 1996 .owner = THIS_MODULE,
1997 .get_brightness = brightness_get,
1998 .update_status = brightness_update_status,
1999 .max_brightness = 7,
8acb0250
HM		 2000};
2001
1da177e4
LT		 2002static void acpi_ibm_exit(void)
2003{
2004 int i;
2005
8acb0250
HM		 2006 if (ibm_backlight_device)
2007 backlight_device_unregister(ibm_backlight_device);
2008
78f81cc4 2009 for (i = ARRAY_SIZE(ibms) - 1; i >= 0; i--)
1da177e4
LT		 2010 ibm_exit(&ibms[i]);
2011
2012 remove_proc_entry(IBM_DIR, acpi_root_dir);
2013}
2014
2015static int __init acpi_ibm_init(void)
2016{
2017 int ret, i;
2018
2019 if (acpi_disabled)
2020 return -ENODEV;
2021
78f81cc4
BD		 2022 if (!acpi_specific_hotkey_enabled) {
2023 printk(IBM_ERR "using generic hotkey driver\n");
1da177e4 2024 return -ENODEV;
78f81cc4 2025 }
1da177e4 2026
78f81cc4
BD		 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");
1da177e4 2031 return -ENODEV;
78f81cc4 2032 }
1da177e4
LT		 2033
2034 /* these handles are not required */
78f81cc4
BD		 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);
63e5f248 2042#ifdef CONFIG_ACPI_IBM_DOCK
78f81cc4 2043 IBM_HANDLE_INIT(dock);
63e5f248 2044#endif
78f81cc4
BD		 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);
1da177e4
LT		 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;
78f81cc4
BD		 2065
2066 for (i = 0; i < ARRAY_SIZE(ibms); i++) {
1da177e4 2067 ret = ibm_init(&ibms[i]);
78f81cc4
BD		 2068 if (ret >= 0 && *ibms[i].param)
2069 ret = ibms[i].write(ibms[i].param);
1da177e4
LT		 2070 if (ret < 0) {
2071 acpi_ibm_exit();
2072 return ret;
2073 }
2074 }
2075
8acb0250
HM		 2076 ibm_backlight_device = backlight_device_register("ibm", NULL,
2077 &ibm_backlight_data);
8d297264 2078 if (IS_ERR(ibm_backlight_device)) {
8acb0250
HM		 2079 printk(IBM_ERR "Could not register ibm backlight device\n");
2080 ibm_backlight_device = NULL;
2081 acpi_ibm_exit();
2082 }
2083
1da177e4
LT		 2084 return 0;
2085}
2086
2087module_init(acpi_ibm_init);
2088module_exit(acpi_ibm_exit);
Linux kernel - Deliverables
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