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ACPI: ibm-acpi: document thermal sensor locations for the A31
[linux-block.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 82#include <asm/uaccess.h>
60eb0b35 83#include <linux/dmi.h>
1da177e4
LT		 84
85#include <acpi/acpi_drivers.h>
86#include <acpi/acnamesp.h>
87
88#define IBM_NAME "ibm"
89#define IBM_DESC "IBM ThinkPad ACPI Extras"
90#define IBM_FILE "ibm_acpi"
91#define IBM_URL "http://ibm-acpi.sf.net/"
92
78f81cc4
BD		 93MODULE_AUTHOR("Borislav Deianov");
94MODULE_DESCRIPTION(IBM_DESC);
95MODULE_VERSION(IBM_VERSION);
96MODULE_LICENSE("GPL");
97
1da177e4
LT		 98#define IBM_DIR IBM_NAME
99
100#define IBM_LOG IBM_FILE ": "
101#define IBM_ERR KERN_ERR IBM_LOG
102#define IBM_NOTICE KERN_NOTICE IBM_LOG
103#define IBM_INFO KERN_INFO IBM_LOG
104#define IBM_DEBUG KERN_DEBUG IBM_LOG
105
106#define IBM_MAX_ACPI_ARGS 3
107
108#define __unused __attribute__ ((unused))
109
110static int experimental;
111module_param(experimental, int, 0);
112
113static acpi_handle root_handle = NULL;
114
115#define IBM_HANDLE(object, parent, paths...) \
116 static acpi_handle object##_handle; \
117 static acpi_handle *object##_parent = &parent##_handle; \
78f81cc4 118 static char *object##_path; \
1da177e4
LT		 119 static char *object##_paths[] = { paths }
120
78f81cc4
BD		 121/*
122 * The following models are supported to various degrees:
123 *
124 * 570, 600e, 600x, 770e, 770x
125 * A20m, A21e, A21m, A21p, A22p, A30, A30p, A31, A31p
126 * G40, G41
127 * R30, R31, R32, R40, R40e, R50, R50e, R50p, R51
128 * T20, T21, T22, T23, T30, T40, T40p, T41, T41p, T42, T42p, T43
129 * X20, X21, X22, X23, X24, X30, X31, X40
130 *
131 * The following models have no supported features:
132 *
133 * 240, 240x, i1400
134 *
135 * Still missing DSDTs for the following models:
136 *
137 * A20p, A22e, A22m
138 * R52
139 * S31
140 * T43p
141 */
142
143IBM_HANDLE(ec, root, "\\_SB.PCI0.ISA.EC0", /* 240, 240x */
144 "\\_SB.PCI.ISA.EC", /* 570 */
145 "\\_SB.PCI0.ISA0.EC0", /* 600e/x, 770e, 770x */
146 "\\_SB.PCI0.ISA.EC", /* A21e, A2xm/p, T20-22, X20-21 */
147 "\\_SB.PCI0.AD4S.EC0", /* i1400, R30 */
148 "\\_SB.PCI0.ICH3.EC0", /* R31 */
149 "\\_SB.PCI0.LPC.EC", /* all others */
150 );
151
152IBM_HANDLE(vid, root, "\\_SB.PCI.AGP.VGA", /* 570 */
153 "\\_SB.PCI0.AGP0.VID0", /* 600e/x, 770x */
154 "\\_SB.PCI0.VID0", /* 770e */
155 "\\_SB.PCI0.VID", /* A21e, G4x, R50e, X30, X40 */
156 "\\_SB.PCI0.AGP.VID", /* all others */
157 ); /* R30, R31 */
158
159IBM_HANDLE(vid2, root, "\\_SB.PCI0.AGPB.VID"); /* G41 */
160
161IBM_HANDLE(cmos, root, "\\UCMS", /* R50, R50e, R50p, R51, T4x, X31, X40 */
162 "\\CMOS", /* A3x, G4x, R32, T23, T30, X22-24, X30 */
163 "\\CMS", /* R40, R40e */
164 ); /* all others */
63e5f248 165#ifdef CONFIG_ACPI_IBM_DOCK
78f81cc4
BD		 166IBM_HANDLE(dock, root, "\\_SB.GDCK", /* X30, X31, X40 */
167 "\\_SB.PCI0.DOCK", /* 600e/x,770e,770x,A2xm/p,T20-22,X20-21 */
168 "\\_SB.PCI0.PCI1.DOCK", /* all others */
169 "\\_SB.PCI.ISA.SLCE", /* 570 */
170 ); /* A21e,G4x,R30,R31,R32,R40,R40e,R50e */
63e5f248 171#endif
78f81cc4
BD		 172IBM_HANDLE(bay, root, "\\_SB.PCI.IDE.SECN.MAST", /* 570 */
173 "\\_SB.PCI0.IDE0.IDES.IDSM", /* 600e/x, 770e, 770x */
174 "\\_SB.PCI0.IDE0.SCND.MSTR", /* all others */
175 ); /* A21e, R30, R31 */
176
177IBM_HANDLE(bay_ej, bay, "_EJ3", /* 600e/x, A2xm/p, A3x */
178 "_EJ0", /* all others */
179 ); /* 570,A21e,G4x,R30,R31,R32,R40e,R50e */
180
181IBM_HANDLE(bay2, root, "\\_SB.PCI0.IDE0.PRIM.SLAV", /* A3x, R32 */
182 "\\_SB.PCI0.IDE0.IDEP.IDPS", /* 600e/x, 770e, 770x */
183 ); /* all others */
184
185IBM_HANDLE(bay2_ej, bay2, "_EJ3", /* 600e/x, 770e, A3x */
186 "_EJ0", /* 770x */
187 ); /* all others */
188
189/* don't list other alternatives as we install a notify handler on the 570 */
190IBM_HANDLE(pci, root, "\\_SB.PCI"); /* 570 */
191
192IBM_HANDLE(hkey, ec, "\\_SB.HKEY", /* 600e/x, 770e, 770x */
193 "^HKEY", /* R30, R31 */
194 "HKEY", /* all others */
195 ); /* 570 */
196
197IBM_HANDLE(lght, root, "\\LGHT"); /* A21e, A2xm/p, T20-22, X20-21 */
198IBM_HANDLE(ledb, ec, "LEDB"); /* G4x */
199
200IBM_HANDLE(led, ec, "SLED", /* 570 */
201 "SYSL", /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20-21 */
202 "LED", /* all others */
203 ); /* R30, R31 */
204
205IBM_HANDLE(beep, ec, "BEEP"); /* all except R30, R31 */
206IBM_HANDLE(ecrd, ec, "ECRD"); /* 570 */
207IBM_HANDLE(ecwr, ec, "ECWR"); /* 570 */
208IBM_HANDLE(fans, ec, "FANS"); /* X31, X40 */
209
210IBM_HANDLE(gfan, ec, "GFAN", /* 570 */
211 "\\FSPD", /* 600e/x, 770e, 770x */
212 ); /* all others */
213
214IBM_HANDLE(sfan, ec, "SFAN", /* 570 */
215 "JFNS", /* 770x-JL */
216 ); /* all others */
217
218#define IBM_HKEY_HID "IBM0068"
219#define IBM_PCI_HID "PNP0A03"
1da177e4 220
a26f878a
HMH		 221enum thermal_access_mode {
222 IBMACPI_THERMAL_NONE = 0, /* No thermal support */
223 IBMACPI_THERMAL_ACPI_TMP07, /* Use ACPI TMP0-7 */
224 IBMACPI_THERMAL_ACPI_UPDT, /* Use ACPI TMP0-7 with UPDT */
60eb0b35
HMH		 225 IBMACPI_THERMAL_TPEC_8, /* Use ACPI EC regs, 8 sensors */
226 IBMACPI_THERMAL_TPEC_16, /* Use ACPI EC regs, 16 sensors */
a26f878a
HMH		 227};
228
60eb0b35 229#define IBMACPI_MAX_THERMAL_SENSORS 16 /* Max thermal sensors supported */
a26f878a
HMH		 230struct ibm_thermal_sensors_struct {
231 s32 temp[IBMACPI_MAX_THERMAL_SENSORS];
232};
233
60eb0b35
HMH		 234static int ibm_thinkpad_ec_found;
235
1da177e4
LT		 236struct ibm_struct {
237 char *name;
78f81cc4 238 char param[32];
1da177e4
LT		 239
240 char *hid;
241 struct acpi_driver *driver;
1da177e4 242
78f81cc4
BD		 243 int (*init) (void);
244 int (*read) (char *);
245 int (*write) (char *);
246 void (*exit) (void);
247
248 void (*notify) (struct ibm_struct *, u32);
1da177e4
LT		 249 acpi_handle *handle;
250 int type;
251 struct acpi_device *device;
252
253 int driver_registered;
254 int proc_created;
255 int init_called;
256 int notify_installed;
257
1da177e4
LT		 258 int experimental;
259};
260
261static struct proc_dir_entry *proc_dir = NULL;
262
8acb0250
HM		 263static struct backlight_device *ibm_backlight_device;
264
1da177e4
LT		 265#define onoff(status,bit) ((status) & (1 << (bit)) ? "on" : "off")
266#define enabled(status,bit) ((status) & (1 << (bit)) ? "enabled" : "disabled")
267#define strlencmp(a,b) (strncmp((a), (b), strlen(b)))
268
269static int acpi_evalf(acpi_handle handle,
270 void *res, char *method, char *fmt, ...)
271{
272 char *fmt0 = fmt;
78f81cc4
BD		 273 struct acpi_object_list params;
274 union acpi_object in_objs[IBM_MAX_ACPI_ARGS];
275 struct acpi_buffer result, *resultp;
276 union acpi_object out_obj;
277 acpi_status status;
278 va_list ap;
279 char res_type;
280 int success;
281 int quiet;
1da177e4
LT		 282
283 if (!*fmt) {
284 printk(IBM_ERR "acpi_evalf() called with empty format\n");
285 return 0;
286 }
287
288 if (*fmt == 'q') {
289 quiet = 1;
290 fmt++;
291 } else
292 quiet = 0;
293
294 res_type = *(fmt++);
295
296 params.count = 0;
297 params.pointer = &in_objs[0];
298
299 va_start(ap, fmt);
300 while (*fmt) {
301 char c = *(fmt++);
302 switch (c) {
303 case 'd': /* int */
304 in_objs[params.count].integer.value = va_arg(ap, int);
305 in_objs[params.count++].type = ACPI_TYPE_INTEGER;
306 break;
78f81cc4 307 /* add more types as needed */
1da177e4
LT		 308 default:
309 printk(IBM_ERR "acpi_evalf() called "
310 "with invalid format character '%c'\n", c);
311 return 0;
312 }
313 }
314 va_end(ap);
315
78f81cc4
BD		 316 if (res_type != 'v') {
317 result.length = sizeof(out_obj);
318 result.pointer = &out_obj;
319 resultp = &result;
320 } else
321 resultp = NULL;
1da177e4 322
78f81cc4 323 status = acpi_evaluate_object(handle, method, &params, resultp);
1da177e4
LT		 324
325 switch (res_type) {
78f81cc4 326 case 'd': /* int */
1da177e4
LT		 327 if (res)
328 *(int *)res = out_obj.integer.value;
329 success = status == AE_OK && out_obj.type == ACPI_TYPE_INTEGER;
330 break;
78f81cc4 331 case 'v': /* void */
1da177e4
LT		 332 success = status == AE_OK;
333 break;
78f81cc4 334 /* add more types as needed */
1da177e4
LT		 335 default:
336 printk(IBM_ERR "acpi_evalf() called "
337 "with invalid format character '%c'\n", res_type);
338 return 0;
339 }
340
341 if (!success && !quiet)
342 printk(IBM_ERR "acpi_evalf(%s, %s, ...) failed: %d\n",
343 method, fmt0, status);
344
345 return success;
346}
347
348static void __unused acpi_print_int(acpi_handle handle, char *method)
349{
350 int i;
351
352 if (acpi_evalf(handle, &i, method, "d"))
353 printk(IBM_INFO "%s = 0x%x\n", method, i);
354 else
355 printk(IBM_ERR "error calling %s\n", method);
356}
357
358static char *next_cmd(char **cmds)
359{
360 char *start = *cmds;
361 char *end;
362
363 while ((end = strchr(start, ',')) && end == start)
364 start = end + 1;
365
366 if (!end)
367 return NULL;
368
369 *end = 0;
370 *cmds = end + 1;
371 return start;
372}
373
78f81cc4 374static int driver_init(void)
1da177e4
LT		 375{
376 printk(IBM_INFO "%s v%s\n", IBM_DESC, IBM_VERSION);
377 printk(IBM_INFO "%s\n", IBM_URL);
378
379 return 0;
380}
381
78f81cc4 382static int driver_read(char *p)
1da177e4
LT		 383{
384 int len = 0;
385
386 len += sprintf(p + len, "driver:\t\t%s\n", IBM_DESC);
387 len += sprintf(p + len, "version:\t%s\n", IBM_VERSION);
388
389 return len;
390}
391
78f81cc4
BD		 392static int hotkey_supported;
393static int hotkey_mask_supported;
394static int hotkey_orig_status;
395static int hotkey_orig_mask;
396
397static int hotkey_get(int *status, int *mask)
1da177e4
LT		 398{
399 if (!acpi_evalf(hkey_handle, status, "DHKC", "d"))
78f81cc4
BD		 400 return 0;
401
402 if (hotkey_mask_supported)
403 if (!acpi_evalf(hkey_handle, mask, "DHKN", "d"))
404 return 0;
405
406 return 1;
1da177e4
LT		 407}
408
78f81cc4 409static int hotkey_set(int status, int mask)
1da177e4
LT		 410{
411 int i;
412
413 if (!acpi_evalf(hkey_handle, NULL, "MHKC", "vd", status))
1da177e4
LT		 414 return 0;
415
78f81cc4
BD		 416 if (hotkey_mask_supported)
417 for (i = 0; i < 32; i++) {
418 int bit = ((1 << i) & mask) != 0;
419 if (!acpi_evalf(hkey_handle,
420 NULL, "MHKM", "vdd", i + 1, bit))
421 return 0;
422 }
1da177e4 423
78f81cc4 424 return 1;
1da177e4
LT		 425}
426
78f81cc4 427static int hotkey_init(void)
1da177e4 428{
78f81cc4
BD		 429 /* hotkey not supported on 570 */
430 hotkey_supported = hkey_handle != NULL;
1da177e4 431
78f81cc4
BD		 432 if (hotkey_supported) {
433 /* mask not supported on 570, 600e/x, 770e, 770x, A21e, A2xm/p,
434 A30, R30, R31, T20-22, X20-21, X22-24 */
435 hotkey_mask_supported =
436 acpi_evalf(hkey_handle, NULL, "DHKN", "qv");
437
438 if (!hotkey_get(&hotkey_orig_status, &hotkey_orig_mask))
439 return -ENODEV;
1da177e4
LT		 440 }
441
78f81cc4
BD		 442 return 0;
443}
1da177e4 444
78f81cc4 445static int hotkey_read(char *p)
1da177e4
LT		 446{
447 int status, mask;
448 int len = 0;
449
78f81cc4
BD		 450 if (!hotkey_supported) {
451 len += sprintf(p + len, "status:\t\tnot supported\n");
452 return len;
453 }
454
455 if (!hotkey_get(&status, &mask))
1da177e4
LT		 456 return -EIO;
457
458 len += sprintf(p + len, "status:\t\t%s\n", enabled(status, 0));
78f81cc4 459 if (hotkey_mask_supported) {
1da177e4
LT		 460 len += sprintf(p + len, "mask:\t\t0x%04x\n", mask);
461 len += sprintf(p + len,
462 "commands:\tenable, disable, reset, <mask>\n");
463 } else {
464 len += sprintf(p + len, "mask:\t\tnot supported\n");
465 len += sprintf(p + len, "commands:\tenable, disable, reset\n");
466 }
467
468 return len;
469}
470
78f81cc4 471static int hotkey_write(char *buf)
1da177e4
LT		 472{
473 int status, mask;
474 char *cmd;
475 int do_cmd = 0;
476
78f81cc4 477 if (!hotkey_supported)
1da177e4
LT		 478 return -ENODEV;
479
78f81cc4
BD		 480 if (!hotkey_get(&status, &mask))
481 return -EIO;
482
1da177e4
LT		 483 while ((cmd = next_cmd(&buf))) {
484 if (strlencmp(cmd, "enable") == 0) {
485 status = 1;
486 } else if (strlencmp(cmd, "disable") == 0) {
487 status = 0;
488 } else if (strlencmp(cmd, "reset") == 0) {
78f81cc4
BD		 489 status = hotkey_orig_status;
490 mask = hotkey_orig_mask;
1da177e4
LT		 491 } else if (sscanf(cmd, "0x%x", &mask) == 1) {
492 /* mask set */
493 } else if (sscanf(cmd, "%x", &mask) == 1) {
494 /* mask set */
495 } else
496 return -EINVAL;
497 do_cmd = 1;
498 }
499
78f81cc4 500 if (do_cmd && !hotkey_set(status, mask))
1da177e4
LT		 501 return -EIO;
502
503 return 0;
78f81cc4 504}
1da177e4 505
78f81cc4 506static void hotkey_exit(void)
1da177e4 507{
78f81cc4
BD		 508 if (hotkey_supported)
509 hotkey_set(hotkey_orig_status, hotkey_orig_mask);
1da177e4
LT		 510}
511
512static void hotkey_notify(struct ibm_struct *ibm, u32 event)
513{
514 int hkey;
515
516 if (acpi_evalf(hkey_handle, &hkey, "MHKP", "d"))
517 acpi_bus_generate_event(ibm->device, event, hkey);
518 else {
519 printk(IBM_ERR "unknown hotkey event %d\n", event);
520 acpi_bus_generate_event(ibm->device, event, 0);
78f81cc4 521 }
1da177e4
LT		 522}
523
78f81cc4
BD		 524static int bluetooth_supported;
525
526static int bluetooth_init(void)
1da177e4 527{
78f81cc4
BD		 528 /* bluetooth not supported on 570, 600e/x, 770e, 770x, A21e, A2xm/p,
529 G4x, R30, R31, R40e, R50e, T20-22, X20-21 */
530 bluetooth_supported = hkey_handle &&
531 acpi_evalf(hkey_handle, NULL, "GBDC", "qv");
1da177e4
LT		 532
533 return 0;
534}
535
78f81cc4 536static int bluetooth_status(void)
1da177e4
LT		 537{
538 int status;
539
78f81cc4
BD		 540 if (!bluetooth_supported ||
541 !acpi_evalf(hkey_handle, &status, "GBDC", "d"))
1da177e4
LT		 542 status = 0;
543
544 return status;
545}
546
78f81cc4 547static int bluetooth_read(char *p)
1da177e4
LT		 548{
549 int len = 0;
78f81cc4 550 int status = bluetooth_status();
1da177e4 551
78f81cc4 552 if (!bluetooth_supported)
1da177e4
LT		 553 len += sprintf(p + len, "status:\t\tnot supported\n");
554 else if (!(status & 1))
555 len += sprintf(p + len, "status:\t\tnot installed\n");
556 else {
557 len += sprintf(p + len, "status:\t\t%s\n", enabled(status, 1));
558 len += sprintf(p + len, "commands:\tenable, disable\n");
559 }
560
561 return len;
562}
563
78f81cc4 564static int bluetooth_write(char *buf)
1da177e4 565{
78f81cc4 566 int status = bluetooth_status();
1da177e4
LT		 567 char *cmd;
568 int do_cmd = 0;
569
78f81cc4
BD		 570 if (!bluetooth_supported)
571 return -ENODEV;
1da177e4
LT		 572
573 while ((cmd = next_cmd(&buf))) {
574 if (strlencmp(cmd, "enable") == 0) {
575 status |= 2;
576 } else if (strlencmp(cmd, "disable") == 0) {
577 status &= ~2;
578 } else
579 return -EINVAL;
580 do_cmd = 1;
581 }
582
583 if (do_cmd && !acpi_evalf(hkey_handle, NULL, "SBDC", "vd", status))
78f81cc4 584 return -EIO;
1da177e4
LT		 585
586 return 0;
587}
588
42adb53c
JF		 589static int wan_supported;
590
591static int wan_init(void)
592{
593 wan_supported = hkey_handle &&
594 acpi_evalf(hkey_handle, NULL, "GWAN", "qv");
595
596 return 0;
597}
598
599static int wan_status(void)
600{
601 int status;
602
8d297264 603 if (!wan_supported || !acpi_evalf(hkey_handle, &status, "GWAN", "d"))
42adb53c
JF		 604 status = 0;
605
606 return status;
607}
608
609static int wan_read(char *p)
610{
611 int len = 0;
612 int status = wan_status();
613
614 if (!wan_supported)
615 len += sprintf(p + len, "status:\t\tnot supported\n");
616 else if (!(status & 1))
617 len += sprintf(p + len, "status:\t\tnot installed\n");
618 else {
619 len += sprintf(p + len, "status:\t\t%s\n", enabled(status, 1));
620 len += sprintf(p + len, "commands:\tenable, disable\n");
621 }
622
623 return len;
624}
625
626static int wan_write(char *buf)
627{
628 int status = wan_status();
629 char *cmd;
630 int do_cmd = 0;
631
632 if (!wan_supported)
633 return -ENODEV;
634
635 while ((cmd = next_cmd(&buf))) {
636 if (strlencmp(cmd, "enable") == 0) {
637 status |= 2;
638 } else if (strlencmp(cmd, "disable") == 0) {
639 status &= ~2;
640 } else
641 return -EINVAL;
642 do_cmd = 1;
643 }
644
645 if (do_cmd && !acpi_evalf(hkey_handle, NULL, "SWAN", "vd", status))
646 return -EIO;
647
648 return 0;
649}
650
78f81cc4
BD		 651static int video_supported;
652static int video_orig_autosw;
653
654#define VIDEO_570 1
655#define VIDEO_770 2
656#define VIDEO_NEW 3
657
658static int video_init(void)
1da177e4 659{
78f81cc4
BD		 660 int ivga;
661
662 if (vid2_handle && acpi_evalf(NULL, &ivga, "\\IVGA", "d") && ivga)
663 /* G41, assume IVGA doesn't change */
664 vid_handle = vid2_handle;
665
666 if (!vid_handle)
667 /* video switching not supported on R30, R31 */
668 video_supported = 0;
669 else if (acpi_evalf(vid_handle, &video_orig_autosw, "SWIT", "qd"))
670 /* 570 */
671 video_supported = VIDEO_570;
672 else if (acpi_evalf(vid_handle, &video_orig_autosw, "^VADL", "qd"))
673 /* 600e/x, 770e, 770x */
674 video_supported = VIDEO_770;
675 else
676 /* all others */
677 video_supported = VIDEO_NEW;
1da177e4
LT		 678
679 return 0;
680}
681
78f81cc4 682static int video_status(void)
1da177e4
LT		 683{
684 int status = 0;
685 int i;
686
78f81cc4
BD		 687 if (video_supported == VIDEO_570) {
688 if (acpi_evalf(NULL, &i, "\\_SB.PHS", "dd", 0x87))
689 status = i & 3;
690 } else if (video_supported == VIDEO_770) {
691 if (acpi_evalf(NULL, &i, "\\VCDL", "d"))
692 status |= 0x01 * i;
693 if (acpi_evalf(NULL, &i, "\\VCDC", "d"))
694 status |= 0x02 * i;
695 } else if (video_supported == VIDEO_NEW) {
696 acpi_evalf(NULL, NULL, "\\VUPS", "vd", 1);
697 if (acpi_evalf(NULL, &i, "\\VCDC", "d"))
698 status |= 0x02 * i;
699
700 acpi_evalf(NULL, NULL, "\\VUPS", "vd", 0);
701 if (acpi_evalf(NULL, &i, "\\VCDL", "d"))
702 status |= 0x01 * i;
703 if (acpi_evalf(NULL, &i, "\\VCDD", "d"))
704 status |= 0x08 * i;
705 }
706
707 return status;
708}
1da177e4 709
78f81cc4
BD		 710static int video_autosw(void)
711{
712 int autosw = 0;
1da177e4 713
78f81cc4
BD		 714 if (video_supported == VIDEO_570)
715 acpi_evalf(vid_handle, &autosw, "SWIT", "d");
716 else if (video_supported == VIDEO_770 || video_supported == VIDEO_NEW)
717 acpi_evalf(vid_handle, &autosw, "^VDEE", "d");
1da177e4 718
78f81cc4 719 return autosw & 1;
1da177e4
LT		 720}
721
78f81cc4 722static int video_read(char *p)
1da177e4 723{
78f81cc4
BD		 724 int status = video_status();
725 int autosw = video_autosw();
1da177e4
LT		 726 int len = 0;
727
78f81cc4
BD		 728 if (!video_supported) {
729 len += sprintf(p + len, "status:\t\tnot supported\n");
730 return len;
731 }
732
733 len += sprintf(p + len, "status:\t\tsupported\n");
1da177e4
LT		 734 len += sprintf(p + len, "lcd:\t\t%s\n", enabled(status, 0));
735 len += sprintf(p + len, "crt:\t\t%s\n", enabled(status, 1));
78f81cc4
BD		 736 if (video_supported == VIDEO_NEW)
737 len += sprintf(p + len, "dvi:\t\t%s\n", enabled(status, 3));
738 len += sprintf(p + len, "auto:\t\t%s\n", enabled(autosw, 0));
739 len += sprintf(p + len, "commands:\tlcd_enable, lcd_disable\n");
740 len += sprintf(p + len, "commands:\tcrt_enable, crt_disable\n");
741 if (video_supported == VIDEO_NEW)
742 len += sprintf(p + len, "commands:\tdvi_enable, dvi_disable\n");
743 len += sprintf(p + len, "commands:\tauto_enable, auto_disable\n");
1da177e4
LT		 744 len += sprintf(p + len, "commands:\tvideo_switch, expand_toggle\n");
745
746 return len;
747}
748
78f81cc4
BD		 749static int video_switch(void)
750{
751 int autosw = video_autosw();
752 int ret;
753
754 if (!acpi_evalf(vid_handle, NULL, "_DOS", "vd", 1))
755 return -EIO;
756 ret = video_supported == VIDEO_570 ?
757 acpi_evalf(ec_handle, NULL, "_Q16", "v") :
758 acpi_evalf(vid_handle, NULL, "VSWT", "v");
759 acpi_evalf(vid_handle, NULL, "_DOS", "vd", autosw);
760
761 return ret;
762}
763
764static int video_expand(void)
765{
766 if (video_supported == VIDEO_570)
767 return acpi_evalf(ec_handle, NULL, "_Q17", "v");
768 else if (video_supported == VIDEO_770)
769 return acpi_evalf(vid_handle, NULL, "VEXP", "v");
770 else
771 return acpi_evalf(NULL, NULL, "\\VEXP", "v");
772}
773
774static int video_switch2(int status)
775{
776 int ret;
777
778 if (video_supported == VIDEO_570) {
779 ret = acpi_evalf(NULL, NULL,
780 "\\_SB.PHS2", "vdd", 0x8b, status | 0x80);
781 } else if (video_supported == VIDEO_770) {
782 int autosw = video_autosw();
783 if (!acpi_evalf(vid_handle, NULL, "_DOS", "vd", 1))
784 return -EIO;
785
786 ret = acpi_evalf(vid_handle, NULL,
787 "ASWT", "vdd", status * 0x100, 0);
788
789 acpi_evalf(vid_handle, NULL, "_DOS", "vd", autosw);
790 } else {
791 ret = acpi_evalf(NULL, NULL, "\\VUPS", "vd", 0x80) &&
792 acpi_evalf(NULL, NULL, "\\VSDS", "vdd", status, 1);
793 }
794
795 return ret;
796}
797
798static int video_write(char *buf)
1da177e4
LT		 799{
800 char *cmd;
801 int enable, disable, status;
802
78f81cc4
BD		 803 if (!video_supported)
804 return -ENODEV;
805
1da177e4
LT		 806 enable = disable = 0;
807
808 while ((cmd = next_cmd(&buf))) {
809 if (strlencmp(cmd, "lcd_enable") == 0) {
810 enable |= 0x01;
811 } else if (strlencmp(cmd, "lcd_disable") == 0) {
812 disable |= 0x01;
813 } else if (strlencmp(cmd, "crt_enable") == 0) {
814 enable |= 0x02;
815 } else if (strlencmp(cmd, "crt_disable") == 0) {
816 disable |= 0x02;
78f81cc4
BD		 817 } else if (video_supported == VIDEO_NEW &&
818 strlencmp(cmd, "dvi_enable") == 0) {
1da177e4 819 enable |= 0x08;
78f81cc4
BD		 820 } else if (video_supported == VIDEO_NEW &&
821 strlencmp(cmd, "dvi_disable") == 0) {
1da177e4
LT		 822 disable |= 0x08;
823 } else if (strlencmp(cmd, "auto_enable") == 0) {
824 if (!acpi_evalf(vid_handle, NULL, "_DOS", "vd", 1))
825 return -EIO;
826 } else if (strlencmp(cmd, "auto_disable") == 0) {
827 if (!acpi_evalf(vid_handle, NULL, "_DOS", "vd", 0))
828 return -EIO;
829 } else if (strlencmp(cmd, "video_switch") == 0) {
78f81cc4 830 if (!video_switch())
1da177e4
LT		 831 return -EIO;
832 } else if (strlencmp(cmd, "expand_toggle") == 0) {
78f81cc4 833 if (!video_expand())
1da177e4
LT		 834 return -EIO;
835 } else
836 return -EINVAL;
837 }
838
839 if (enable || disable) {
78f81cc4
BD		 840 status = (video_status() & 0x0f & ~disable) | enable;
841 if (!video_switch2(status))
1da177e4
LT		 842 return -EIO;
843 }
844
845 return 0;
846}
847
78f81cc4 848static void video_exit(void)
1da177e4 849{
78f81cc4 850 acpi_evalf(vid_handle, NULL, "_DOS", "vd", video_orig_autosw);
1da177e4
LT		 851}
852
78f81cc4
BD		 853static int light_supported;
854static int light_status_supported;
855
856static int light_init(void)
1da177e4 857{
78f81cc4
BD		 858 /* light not supported on 570, 600e/x, 770e, 770x, G4x, R30, R31 */
859 light_supported = (cmos_handle || lght_handle) && !ledb_handle;
860
861 if (light_supported)
862 /* light status not supported on
863 570, 600e/x, 770e, 770x, G4x, R30, R31, R32, X20 */
864 light_status_supported = acpi_evalf(ec_handle, NULL,
865 "KBLT", "qv");
1da177e4
LT		 866
867 return 0;
868}
869
78f81cc4 870static int light_read(char *p)
1da177e4
LT		 871{
872 int len = 0;
873 int status = 0;
874
78f81cc4
BD		 875 if (!light_supported) {
876 len += sprintf(p + len, "status:\t\tnot supported\n");
877 } else if (!light_status_supported) {
878 len += sprintf(p + len, "status:\t\tunknown\n");
879 len += sprintf(p + len, "commands:\ton, off\n");
880 } else {
1da177e4
LT		 881 if (!acpi_evalf(ec_handle, &status, "KBLT", "d"))
882 return -EIO;
883 len += sprintf(p + len, "status:\t\t%s\n", onoff(status, 0));
78f81cc4
BD		 884 len += sprintf(p + len, "commands:\ton, off\n");
885 }
1da177e4
LT		 886
887 return len;
888}
889
78f81cc4 890static int light_write(char *buf)
1da177e4
LT		 891{
892 int cmos_cmd, lght_cmd;
893 char *cmd;
894 int success;
78f81cc4
BD		 895
896 if (!light_supported)
897 return -ENODEV;
898
1da177e4
LT		 899 while ((cmd = next_cmd(&buf))) {
900 if (strlencmp(cmd, "on") == 0) {
901 cmos_cmd = 0x0c;
902 lght_cmd = 1;
903 } else if (strlencmp(cmd, "off") == 0) {
904 cmos_cmd = 0x0d;
905 lght_cmd = 0;
906 } else
907 return -EINVAL;
78f81cc4 908
1da177e4 909 success = cmos_handle ?
78f81cc4
BD		 910 acpi_evalf(cmos_handle, NULL, NULL, "vd", cmos_cmd) :
911 acpi_evalf(lght_handle, NULL, NULL, "vd", lght_cmd);
1da177e4
LT		 912 if (!success)
913 return -EIO;
914 }
915
916 return 0;
917}
918
919static int _sta(acpi_handle handle)
920{
921 int status;
922
923 if (!handle || !acpi_evalf(handle, &status, "_STA", "d"))
924 status = 0;
925
926 return status;
927}
8d297264 928
63e5f248 929#ifdef CONFIG_ACPI_IBM_DOCK
1da177e4
LT		 930#define dock_docked() (_sta(dock_handle) & 1)
931
78f81cc4 932static int dock_read(char *p)
1da177e4
LT		 933{
934 int len = 0;
935 int docked = dock_docked();
936
937 if (!dock_handle)
938 len += sprintf(p + len, "status:\t\tnot supported\n");
939 else if (!docked)
940 len += sprintf(p + len, "status:\t\tundocked\n");
941 else {
942 len += sprintf(p + len, "status:\t\tdocked\n");
943 len += sprintf(p + len, "commands:\tdock, undock\n");
944 }
945
946 return len;
947}
948
78f81cc4 949static int dock_write(char *buf)
1da177e4
LT		 950{
951 char *cmd;
952
953 if (!dock_docked())
78f81cc4 954 return -ENODEV;
1da177e4
LT		 955
956 while ((cmd = next_cmd(&buf))) {
957 if (strlencmp(cmd, "undock") == 0) {
78f81cc4
BD		 958 if (!acpi_evalf(dock_handle, NULL, "_DCK", "vd", 0) ||
959 !acpi_evalf(dock_handle, NULL, "_EJ0", "vd", 1))
1da177e4
LT		 960 return -EIO;
961 } else if (strlencmp(cmd, "dock") == 0) {
962 if (!acpi_evalf(dock_handle, NULL, "_DCK", "vd", 1))
963 return -EIO;
964 } else
965 return -EINVAL;
966 }
967
968 return 0;
78f81cc4 969}
1da177e4
LT		 970
971static void dock_notify(struct ibm_struct *ibm, u32 event)
972{
973 int docked = dock_docked();
78f81cc4
BD		 974 int pci = ibm->hid && strstr(ibm->hid, IBM_PCI_HID);
975
976 if (event == 1 && !pci) /* 570 */
977 acpi_bus_generate_event(ibm->device, event, 1); /* button */
978 else if (event == 1 && pci) /* 570 */
979 acpi_bus_generate_event(ibm->device, event, 3); /* dock */
980 else if (event == 3 && docked)
981 acpi_bus_generate_event(ibm->device, event, 1); /* button */
1da177e4 982 else if (event == 3 && !docked)
78f81cc4 983 acpi_bus_generate_event(ibm->device, event, 2); /* undock */
1da177e4 984 else if (event == 0 && docked)
78f81cc4 985 acpi_bus_generate_event(ibm->device, event, 3); /* dock */
1da177e4
LT		 986 else {
987 printk(IBM_ERR "unknown dock event %d, status %d\n",
988 event, _sta(dock_handle));
78f81cc4 989 acpi_bus_generate_event(ibm->device, event, 0); /* unknown */
1da177e4
LT		 990 }
991}
63e5f248 992#endif
1da177e4 993
78f81cc4
BD		 994static int bay_status_supported;
995static int bay_status2_supported;
996static int bay_eject_supported;
997static int bay_eject2_supported;
1da177e4 998
78f81cc4 999static int bay_init(void)
1da177e4 1000{
78f81cc4
BD		 1001 bay_status_supported = bay_handle &&
1002 acpi_evalf(bay_handle, NULL, "_STA", "qv");
1003 bay_status2_supported = bay2_handle &&
1004 acpi_evalf(bay2_handle, NULL, "_STA", "qv");
1005
1006 bay_eject_supported = bay_handle && bay_ej_handle &&
1007 (strlencmp(bay_ej_path, "_EJ0") == 0 || experimental);
1008 bay_eject2_supported = bay2_handle && bay2_ej_handle &&
1009 (strlencmp(bay2_ej_path, "_EJ0") == 0 || experimental);
1da177e4
LT		 1010
1011 return 0;
1012}
1013
78f81cc4
BD		 1014#define bay_occupied(b) (_sta(b##_handle) & 1)
1015
1016static int bay_read(char *p)
1da177e4
LT		 1017{
1018 int len = 0;
78f81cc4
BD		 1019 int occupied = bay_occupied(bay);
1020 int occupied2 = bay_occupied(bay2);
1021 int eject, eject2;
1022
1023 len += sprintf(p + len, "status:\t\t%s\n", bay_status_supported ?
1024 (occupied ? "occupied" : "unoccupied") :
1025 "not supported");
1026 if (bay_status2_supported)
1027 len += sprintf(p + len, "status2:\t%s\n", occupied2 ?
1028 "occupied" : "unoccupied");
1029
1030 eject = bay_eject_supported && occupied;
1031 eject2 = bay_eject2_supported && occupied2;
1032
1033 if (eject && eject2)
1034 len += sprintf(p + len, "commands:\teject, eject2\n");
1035 else if (eject)
1da177e4 1036 len += sprintf(p + len, "commands:\teject\n");
78f81cc4
BD		 1037 else if (eject2)
1038 len += sprintf(p + len, "commands:\teject2\n");
1da177e4
LT		 1039
1040 return len;
1041}
1042
78f81cc4 1043static int bay_write(char *buf)
1da177e4
LT		 1044{
1045 char *cmd;
1046
78f81cc4
BD		 1047 if (!bay_eject_supported && !bay_eject2_supported)
1048 return -ENODEV;
1049
1da177e4 1050 while ((cmd = next_cmd(&buf))) {
78f81cc4
BD		 1051 if (bay_eject_supported && strlencmp(cmd, "eject") == 0) {
1052 if (!acpi_evalf(bay_ej_handle, NULL, NULL, "vd", 1))
1053 return -EIO;
1054 } else if (bay_eject2_supported &&
1055 strlencmp(cmd, "eject2") == 0) {
1056 if (!acpi_evalf(bay2_ej_handle, NULL, NULL, "vd", 1))
1da177e4
LT		 1057 return -EIO;
1058 } else
1059 return -EINVAL;
1060 }
1061
1062 return 0;
78f81cc4 1063}
1da177e4
LT		 1064
1065static void bay_notify(struct ibm_struct *ibm, u32 event)
1066{
1067 acpi_bus_generate_event(ibm->device, event, 0);
1068}
1069
78f81cc4 1070static int cmos_read(char *p)
1da177e4
LT		 1071{
1072 int len = 0;
1073
78f81cc4
BD		 1074 /* cmos not supported on 570, 600e/x, 770e, 770x, A21e, A2xm/p,
1075 R30, R31, T20-22, X20-21 */
1da177e4
LT		 1076 if (!cmos_handle)
1077 len += sprintf(p + len, "status:\t\tnot supported\n");
1078 else {
1079 len += sprintf(p + len, "status:\t\tsupported\n");
78f81cc4 1080 len += sprintf(p + len, "commands:\t<cmd> (<cmd> is 0-21)\n");
1da177e4
LT		 1081 }
1082
1083 return len;
1084}
1085
78f81cc4
BD		 1086static int cmos_eval(int cmos_cmd)
1087{
1088 if (cmos_handle)
1089 return acpi_evalf(cmos_handle, NULL, NULL, "vd", cmos_cmd);
1090 else
1091 return 1;
1092}
1093
1094static int cmos_write(char *buf)
1da177e4
LT		 1095{
1096 char *cmd;
1097 int cmos_cmd;
1098
1099 if (!cmos_handle)
1100 return -EINVAL;
1101
1102 while ((cmd = next_cmd(&buf))) {
78f81cc4
BD		 1103 if (sscanf(cmd, "%u", &cmos_cmd) == 1 &&
1104 cmos_cmd >= 0 && cmos_cmd <= 21) {
1da177e4
LT		 1105 /* cmos_cmd set */
1106 } else
1107 return -EINVAL;
1108
78f81cc4 1109 if (!cmos_eval(cmos_cmd))
1da177e4
LT		 1110 return -EIO;
1111 }
1112
1113 return 0;
78f81cc4
BD		 1114}
1115
1116static int led_supported;
1117
1118#define LED_570 1
1119#define LED_OLD 2
1120#define LED_NEW 3
1121
1122static int led_init(void)
1123{
1124 if (!led_handle)
1125 /* led not supported on R30, R31 */
1126 led_supported = 0;
1127 else if (strlencmp(led_path, "SLED") == 0)
1128 /* 570 */
1129 led_supported = LED_570;
1130 else if (strlencmp(led_path, "SYSL") == 0)
1131 /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20-21 */
1132 led_supported = LED_OLD;
1133 else
1134 /* all others */
1135 led_supported = LED_NEW;
1136
1137 return 0;
1138}
1139
1140#define led_status(s) ((s) == 0 ? "off" : ((s) == 1 ? "on" : "blinking"))
1141
1142static int led_read(char *p)
1da177e4
LT		 1143{
1144 int len = 0;
1145
78f81cc4
BD		 1146 if (!led_supported) {
1147 len += sprintf(p + len, "status:\t\tnot supported\n");
1148 return len;
1149 }
1150 len += sprintf(p + len, "status:\t\tsupported\n");
1151
1152 if (led_supported == LED_570) {
1153 /* 570 */
1154 int i, status;
1155 for (i = 0; i < 8; i++) {
1156 if (!acpi_evalf(ec_handle,
1157 &status, "GLED", "dd", 1 << i))
1158 return -EIO;
1159 len += sprintf(p + len, "%d:\t\t%s\n",
1160 i, led_status(status));
1161 }
1162 }
1163
1da177e4 1164 len += sprintf(p + len, "commands:\t"
78f81cc4 1165 "<led> on, <led> off, <led> blink (<led> is 0-7)\n");
1da177e4
LT		 1166
1167 return len;
1168}
1169
78f81cc4
BD		 1170/* off, on, blink */
1171static const int led_sled_arg1[] = { 0, 1, 3 };
1172static const int led_exp_hlbl[] = { 0, 0, 1 }; /* led# * */
1173static const int led_exp_hlcl[] = { 0, 1, 1 }; /* led# * */
1174static const int led_led_arg1[] = { 0, 0x80, 0xc0 };
1175
1176#define EC_HLCL 0x0c
1177#define EC_HLBL 0x0d
1178#define EC_HLMS 0x0e
1179
1180static int led_write(char *buf)
1da177e4
LT		 1181{
1182 char *cmd;
78f81cc4
BD		 1183 int led, ind, ret;
1184
1185 if (!led_supported)
1186 return -ENODEV;
1da177e4
LT		 1187
1188 while ((cmd = next_cmd(&buf))) {
78f81cc4 1189 if (sscanf(cmd, "%d", &led) != 1 || led < 0 || led > 7)
1da177e4
LT		 1190 return -EINVAL;
1191
78f81cc4
BD		 1192 if (strstr(cmd, "off")) {
1193 ind = 0;
1da177e4 1194 } else if (strstr(cmd, "on")) {
78f81cc4
BD		 1195 ind = 1;
1196 } else if (strstr(cmd, "blink")) {
1197 ind = 2;
1da177e4
LT		 1198 } else
1199 return -EINVAL;
78f81cc4
BD		 1200
1201 if (led_supported == LED_570) {
1202 /* 570 */
1203 led = 1 << led;
1da177e4 1204 if (!acpi_evalf(led_handle, NULL, NULL, "vdd",
78f81cc4 1205 led, led_sled_arg1[ind]))
1da177e4 1206 return -EIO;
78f81cc4
BD		 1207 } else if (led_supported == LED_OLD) {
1208 /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20 */
1209 led = 1 << led;
1210 ret = ec_write(EC_HLMS, led);
1211 if (ret >= 0)
1212 ret =
1213 ec_write(EC_HLBL, led * led_exp_hlbl[ind]);
1214 if (ret >= 0)
1215 ret =
1216 ec_write(EC_HLCL, led * led_exp_hlcl[ind]);
1217 if (ret < 0)
1218 return ret;
1219 } else {
1220 /* all others */
1221 if (!acpi_evalf(led_handle, NULL, NULL, "vdd",
1222 led, led_led_arg1[ind]))
1da177e4 1223 return -EIO;
78f81cc4
BD		 1224 }
1225 }
1226
1227 return 0;
1228}
1229
1230static int beep_read(char *p)
1231{
1232 int len = 0;
1233
1234 if (!beep_handle)
1235 len += sprintf(p + len, "status:\t\tnot supported\n");
1236 else {
1237 len += sprintf(p + len, "status:\t\tsupported\n");
1238 len += sprintf(p + len, "commands:\t<cmd> (<cmd> is 0-17)\n");
1239 }
1240
1241 return len;
1242}
1243
1244static int beep_write(char *buf)
1245{
1246 char *cmd;
1247 int beep_cmd;
1248
1249 if (!beep_handle)
1250 return -ENODEV;
1251
1252 while ((cmd = next_cmd(&buf))) {
1253 if (sscanf(cmd, "%u", &beep_cmd) == 1 &&
1254 beep_cmd >= 0 && beep_cmd <= 17) {
1255 /* beep_cmd set */
1256 } else
1257 return -EINVAL;
1258 if (!acpi_evalf(beep_handle, NULL, NULL, "vdd", beep_cmd, 0))
1259 return -EIO;
1260 }
1261
1262 return 0;
1263}
1264
1265static int acpi_ec_read(int i, u8 * p)
1266{
1267 int v;
1268
1269 if (ecrd_handle) {
1270 if (!acpi_evalf(ecrd_handle, &v, NULL, "dd", i))
1271 return 0;
1272 *p = v;
1273 } else {
1274 if (ec_read(i, p) < 0)
1275 return 0;
1276 }
1277
1278 return 1;
1279}
1280
1281static int acpi_ec_write(int i, u8 v)
1282{
1283 if (ecwr_handle) {
1284 if (!acpi_evalf(ecwr_handle, NULL, NULL, "vdd", i, v))
1285 return 0;
1286 } else {
1287 if (ec_write(i, v) < 0)
1288 return 0;
1289 }
1290
1291 return 1;
1292}
1293
a26f878a 1294static enum thermal_access_mode thermal_read_mode;
78f81cc4
BD		 1295
1296static int thermal_init(void)
1297{
60eb0b35
HMH		 1298 u8 t, ta1, ta2;
1299 int i;
1300 int acpi_tmp7 = acpi_evalf(ec_handle, NULL, "TMP7", "qv");
1301
1302 if (ibm_thinkpad_ec_found && experimental) {
1303 /*
1304 * Direct EC access mode: sensors at registers
1305 * 0x78-0x7F, 0xC0-0xC7. Registers return 0x00 for
1306 * non-implemented, thermal sensors return 0x80 when
1307 * not available
1308 */
1309
1310 ta1 = ta2 = 0;
1311 for (i = 0; i < 8; i++) {
1312 if (likely(acpi_ec_read(0x78 + i, &t))) {
1313 ta1 |= t;
1314 } else {
1315 ta1 = 0;
1316 break;
1317 }
1318 if (likely(acpi_ec_read(0xC0 + i, &t))) {
1319 ta2 |= t;
1320 } else {
1321 ta1 = 0;
1322 break;
1323 }
1324 }
1325 if (ta1 == 0) {
1326 /* This is sheer paranoia, but we handle it anyway */
1327 if (acpi_tmp7) {
1328 printk(IBM_ERR
1329 "ThinkPad ACPI EC access misbehaving, "
1330 "falling back to ACPI TMPx access mode\n");
1331 thermal_read_mode = IBMACPI_THERMAL_ACPI_TMP07;
1332 } else {
1333 printk(IBM_ERR
1334 "ThinkPad ACPI EC access misbehaving, "
1335 "disabling thermal sensors access\n");
1336 thermal_read_mode = IBMACPI_THERMAL_NONE;
1337 }
1338 } else {
1339 thermal_read_mode =
1340 (ta2 != 0) ?
1341 IBMACPI_THERMAL_TPEC_16 : IBMACPI_THERMAL_TPEC_8;
1342 }
1343 } else if (acpi_tmp7) {
a26f878a
HMH		 1344 if (acpi_evalf(ec_handle, NULL, "UPDT", "qv")) {
1345 /* 600e/x, 770e, 770x */
1346 thermal_read_mode = IBMACPI_THERMAL_ACPI_UPDT;
1347 } else {
1348 /* Standard ACPI TMPx access, max 8 sensors */
1349 thermal_read_mode = IBMACPI_THERMAL_ACPI_TMP07;
1350 }
1351 } else {
1352 /* temperatures not supported on 570, G4x, R30, R31, R32 */
1353 thermal_read_mode = IBMACPI_THERMAL_NONE;
1354 }
78f81cc4
BD		 1355
1356 return 0;
1357}
1358
a26f878a 1359static int thermal_get_sensors(struct ibm_thermal_sensors_struct *s)
78f81cc4 1360{
a26f878a 1361 int i, t;
60eb0b35 1362 s8 tmp;
a26f878a 1363 char tmpi[] = "TMPi";
78f81cc4 1364
a26f878a
HMH		 1365 if (!s)
1366 return -EINVAL;
78f81cc4 1367
a26f878a 1368 switch (thermal_read_mode) {
60eb0b35
HMH		 1369#if IBMACPI_MAX_THERMAL_SENSORS >= 16
1370 case IBMACPI_THERMAL_TPEC_16:
1371 for (i = 0; i < 8; i++) {
1372 if (!acpi_ec_read(0xC0 + i, &tmp))
1373 return -EIO;
1374 s->temp[i + 8] = tmp * 1000;
1375 }
1376 /* fallthrough */
1377#endif
1378 case IBMACPI_THERMAL_TPEC_8:
1379 for (i = 0; i < 8; i++) {
1380 if (!acpi_ec_read(0x78 + i, &tmp))
1381 return -EIO;
1382 s->temp[i] = tmp * 1000;
1383 }
1384 return (thermal_read_mode == IBMACPI_THERMAL_TPEC_16) ? 16 : 8;
1385
a26f878a
HMH		 1386 case IBMACPI_THERMAL_ACPI_UPDT:
1387 if (!acpi_evalf(ec_handle, NULL, "UPDT", "v"))
1388 return -EIO;
1389 for (i = 0; i < 8; i++) {
1390 tmpi[3] = '0' + i;
1391 if (!acpi_evalf(ec_handle, &t, tmpi, "d"))
78f81cc4 1392 return -EIO;
a26f878a
HMH		 1393 s->temp[i] = (t - 2732) * 100;
1394 }
1395 return 8;
78f81cc4 1396
a26f878a 1397 case IBMACPI_THERMAL_ACPI_TMP07:
78f81cc4
BD		 1398 for (i = 0; i < 8; i++) {
1399 tmpi[3] = '0' + i;
1400 if (!acpi_evalf(ec_handle, &t, tmpi, "d"))
1401 return -EIO;
a26f878a 1402 s->temp[i] = t * 1000;
78f81cc4 1403 }
a26f878a 1404 return 8;
78f81cc4 1405
a26f878a
HMH		 1406 case IBMACPI_THERMAL_NONE:
1407 default:
1408 return 0;
78f81cc4 1409 }
a26f878a
HMH		 1410}
1411
1412static int thermal_read(char *p)
1413{
1414 int len = 0;
1415 int n, i;
1416 struct ibm_thermal_sensors_struct t;
1417
1418 n = thermal_get_sensors(&t);
1419 if (unlikely(n < 0))
1420 return n;
1421
1422 len += sprintf(p + len, "temperatures:\t");
1423
1424 if (n > 0) {
1425 for (i = 0; i < (n - 1); i++)
1426 len += sprintf(p + len, "%d ", t.temp[i] / 1000);
1427 len += sprintf(p + len, "%d\n", t.temp[i] / 1000);
1428 } else
1429 len += sprintf(p + len, "not supported\n");
78f81cc4
BD		 1430
1431 return len;
1432}
1433
1434static u8 ecdump_regs[256];
1435
1436static int ecdump_read(char *p)
1437{
1438 int len = 0;
1439 int i, j;
1440 u8 v;
1441
1442 len += sprintf(p + len, "EC "
1443 " +00 +01 +02 +03 +04 +05 +06 +07"
1444 " +08 +09 +0a +0b +0c +0d +0e +0f\n");
1445 for (i = 0; i < 256; i += 16) {
1446 len += sprintf(p + len, "EC 0x%02x:", i);
1447 for (j = 0; j < 16; j++) {
1448 if (!acpi_ec_read(i + j, &v))
1449 break;
1450 if (v != ecdump_regs[i + j])
1451 len += sprintf(p + len, " *%02x", v);
1452 else
1453 len += sprintf(p + len, " %02x", v);
1454 ecdump_regs[i + j] = v;
1455 }
1456 len += sprintf(p + len, "\n");
1457 if (j != 16)
1458 break;
1459 }
1460
1461 /* These are way too dangerous to advertise openly... */
1462#if 0
1463 len += sprintf(p + len, "commands:\t0x<offset> 0x<value>"
1464 " (<offset> is 00-ff, <value> is 00-ff)\n");
1465 len += sprintf(p + len, "commands:\t0x<offset> <value> "
1466 " (<offset> is 00-ff, <value> is 0-255)\n");
1467#endif
1468 return len;
1469}
1470
1471static int ecdump_write(char *buf)
1472{
1473 char *cmd;
1474 int i, v;
1475
1476 while ((cmd = next_cmd(&buf))) {
1477 if (sscanf(cmd, "0x%x 0x%x", &i, &v) == 2) {
1478 /* i and v set */
1479 } else if (sscanf(cmd, "0x%x %u", &i, &v) == 2) {
1480 /* i and v set */
1481 } else
1482 return -EINVAL;
1483 if (i >= 0 && i < 256 && v >= 0 && v < 256) {
1484 if (!acpi_ec_write(i, v))
1da177e4
LT		 1485 return -EIO;
1486 } else
1487 return -EINVAL;
1488 }
1489
1490 return 0;
78f81cc4
BD		 1491}
1492
1493static int brightness_offset = 0x31;
1494
8acb0250
HM		 1495static int brightness_get(struct backlight_device *bd)
1496{
8d297264
HMH		 1497 u8 level;
1498 if (!acpi_ec_read(brightness_offset, &level))
1499 return -EIO;
8acb0250 1500
8d297264
HMH		 1501 level &= 0x7;
1502 return level;
8acb0250
HM		 1503}
1504
78f81cc4 1505static int brightness_read(char *p)
1da177e4
LT		 1506{
1507 int len = 0;
8acb0250 1508 int level;
1da177e4 1509
8acb0250 1510 if ((level = brightness_get(NULL)) < 0) {
78f81cc4
BD		 1511 len += sprintf(p + len, "level:\t\tunreadable\n");
1512 } else {
1513 len += sprintf(p + len, "level:\t\t%d\n", level & 0x7);
1514 len += sprintf(p + len, "commands:\tup, down\n");
1515 len += sprintf(p + len, "commands:\tlevel <level>"
1516 " (<level> is 0-7)\n");
1517 }
1da177e4
LT		 1518
1519 return len;
1520}
1521
78f81cc4
BD		 1522#define BRIGHTNESS_UP 4
1523#define BRIGHTNESS_DOWN 5
1524
8acb0250 1525static int brightness_set(int value)
1da177e4 1526{
78f81cc4 1527 int cmos_cmd, inc, i;
8acb0250
HM		 1528 int current_value = brightness_get(NULL);
1529
1530 value &= 7;
1531
1532 cmos_cmd = value > current_value ? BRIGHTNESS_UP : BRIGHTNESS_DOWN;
1533 inc = value > current_value ? 1 : -1;
1534 for (i = current_value; i != value; i += inc) {
1535 if (!cmos_eval(cmos_cmd))
1536 return -EIO;
1537 if (!acpi_ec_write(brightness_offset, i + inc))
1538 return -EIO;
1539 }
1540
1541 return 0;
1542}
1543
1544static int brightness_write(char *buf)
1545{
1546 int level;
78f81cc4 1547 int new_level;
1da177e4 1548 char *cmd;
1da177e4
LT		 1549
1550 while ((cmd = next_cmd(&buf))) {
8acb0250
HM		 1551 if ((level = brightness_get(NULL)) < 0)
1552 return level;
78f81cc4
BD		 1553 level &= 7;
1554
1555 if (strlencmp(cmd, "up") == 0) {
1556 new_level = level == 7 ? 7 : level + 1;
1557 } else if (strlencmp(cmd, "down") == 0) {
1558 new_level = level == 0 ? 0 : level - 1;
1559 } else if (sscanf(cmd, "level %d", &new_level) == 1 &&
1560 new_level >= 0 && new_level <= 7) {
1561 /* new_level set */
1562 } else
1563 return -EINVAL;
1564
8acb0250 1565 brightness_set(new_level);
78f81cc4
BD		 1566 }
1567
1568 return 0;
1569}
1570
8acb0250
HM		 1571static int brightness_update_status(struct backlight_device *bd)
1572{
1573 return brightness_set(bd->props->brightness);
1574}
1575
78f81cc4
BD		 1576static int volume_offset = 0x30;
1577
1578static int volume_read(char *p)
1579{
1580 int len = 0;
1581 u8 level;
1582
1583 if (!acpi_ec_read(volume_offset, &level)) {
1584 len += sprintf(p + len, "level:\t\tunreadable\n");
1585 } else {
1586 len += sprintf(p + len, "level:\t\t%d\n", level & 0xf);
1587 len += sprintf(p + len, "mute:\t\t%s\n", onoff(level, 6));
1588 len += sprintf(p + len, "commands:\tup, down, mute\n");
1589 len += sprintf(p + len, "commands:\tlevel <level>"
1590 " (<level> is 0-15)\n");
1591 }
1592
1593 return len;
1594}
1595
1596#define VOLUME_DOWN 0
1597#define VOLUME_UP 1
1598#define VOLUME_MUTE 2
1599
1600static int volume_write(char *buf)
1601{
1602 int cmos_cmd, inc, i;
1603 u8 level, mute;
1604 int new_level, new_mute;
1605 char *cmd;
1606
1607 while ((cmd = next_cmd(&buf))) {
1608 if (!acpi_ec_read(volume_offset, &level))
1609 return -EIO;
1610 new_mute = mute = level & 0x40;
1611 new_level = level = level & 0xf;
1612
1613 if (strlencmp(cmd, "up") == 0) {
1614 if (mute)
1615 new_mute = 0;
1616 else
1617 new_level = level == 15 ? 15 : level + 1;
1618 } else if (strlencmp(cmd, "down") == 0) {
1619 if (mute)
1620 new_mute = 0;
1621 else
1622 new_level = level == 0 ? 0 : level - 1;
1623 } else if (sscanf(cmd, "level %d", &new_level) == 1 &&
1624 new_level >= 0 && new_level <= 15) {
1625 /* new_level set */
1626 } else if (strlencmp(cmd, "mute") == 0) {
1627 new_mute = 0x40;
1da177e4
LT		 1628 } else
1629 return -EINVAL;
1630
78f81cc4
BD		 1631 if (new_level != level) { /* mute doesn't change */
1632 cmos_cmd = new_level > level ? VOLUME_UP : VOLUME_DOWN;
1633 inc = new_level > level ? 1 : -1;
1634
1635 if (mute && (!cmos_eval(cmos_cmd) ||
1636 !acpi_ec_write(volume_offset, level)))
1637 return -EIO;
1638
1639 for (i = level; i != new_level; i += inc)
1640 if (!cmos_eval(cmos_cmd) ||
1641 !acpi_ec_write(volume_offset, i + inc))
1642 return -EIO;
1643
1644 if (mute && (!cmos_eval(VOLUME_MUTE) ||
1645 !acpi_ec_write(volume_offset,
1646 new_level + mute)))
1647 return -EIO;
1648 }
1649
1650 if (new_mute != mute) { /* level doesn't change */
1651 cmos_cmd = new_mute ? VOLUME_MUTE : VOLUME_UP;
1652
1653 if (!cmos_eval(cmos_cmd) ||
1654 !acpi_ec_write(volume_offset, level + new_mute))
1655 return -EIO;
1656 }
1657 }
1658
1659 return 0;
1660}
1661
1662static int fan_status_offset = 0x2f;
1663static int fan_rpm_offset = 0x84;
1664
1665static int fan_read(char *p)
1666{
1667 int len = 0;
1668 int s;
1669 u8 lo, hi, status;
1670
1671 if (gfan_handle) {
1672 /* 570, 600e/x, 770e, 770x */
1673 if (!acpi_evalf(gfan_handle, &s, NULL, "d"))
1da177e4 1674 return -EIO;
78f81cc4
BD		 1675
1676 len += sprintf(p + len, "level:\t\t%d\n", s);
1677 } else {
1678 /* all except 570, 600e/x, 770e, 770x */
1679 if (!acpi_ec_read(fan_status_offset, &status))
1680 len += sprintf(p + len, "status:\t\tunreadable\n");
1681 else
1682 len += sprintf(p + len, "status:\t\t%s\n",
1683 enabled(status, 7));
1684
1685 if (!acpi_ec_read(fan_rpm_offset, &lo) ||
1686 !acpi_ec_read(fan_rpm_offset + 1, &hi))
1687 len += sprintf(p + len, "speed:\t\tunreadable\n");
1688 else
1689 len += sprintf(p + len, "speed:\t\t%d\n",
1690 (hi << 8) + lo);
1691 }
1692
1693 if (sfan_handle)
1694 /* 570, 770x-JL */
1695 len += sprintf(p + len, "commands:\tlevel <level>"
1696 " (<level> is 0-7)\n");
1697 if (!gfan_handle)
1698 /* all except 570, 600e/x, 770e, 770x */
1699 len += sprintf(p + len, "commands:\tenable, disable\n");
1700 if (fans_handle)
1701 /* X31, X40 */
1702 len += sprintf(p + len, "commands:\tspeed <speed>"
1703 " (<speed> is 0-65535)\n");
1704
1705 return len;
1706}
1707
1708static int fan_write(char *buf)
1709{
1710 char *cmd;
1711 int level, speed;
1712
1713 while ((cmd = next_cmd(&buf))) {
1714 if (sfan_handle &&
1715 sscanf(cmd, "level %d", &level) == 1 &&
1716 level >= 0 && level <= 7) {
1717 /* 570, 770x-JL */
1718 if (!acpi_evalf(sfan_handle, NULL, NULL, "vd", level))
1719 return -EIO;
1720 } else if (!gfan_handle && strlencmp(cmd, "enable") == 0) {
1721 /* all except 570, 600e/x, 770e, 770x */
1722 if (!acpi_ec_write(fan_status_offset, 0x80))
1723 return -EIO;
1724 } else if (!gfan_handle && strlencmp(cmd, "disable") == 0) {
1725 /* all except 570, 600e/x, 770e, 770x */
1726 if (!acpi_ec_write(fan_status_offset, 0x00))
1727 return -EIO;
1728 } else if (fans_handle &&
1729 sscanf(cmd, "speed %d", &speed) == 1 &&
1730 speed >= 0 && speed <= 65535) {
1731 /* X31, X40 */
1732 if (!acpi_evalf(fans_handle, NULL, NULL, "vddd",
1733 speed, speed, speed))
1734 return -EIO;
1735 } else
1736 return -EINVAL;
1da177e4
LT		 1737 }
1738
1739 return 0;
78f81cc4
BD		 1740}
1741
1da177e4
LT		 1742static struct ibm_struct ibms[] = {
1743 {
78f81cc4
BD		 1744 .name = "driver",
1745 .init = driver_init,
1746 .read = driver_read,
1747 },
1748 {
1749 .name = "hotkey",
1750 .hid = IBM_HKEY_HID,
1751 .init = hotkey_init,
1752 .read = hotkey_read,
1753 .write = hotkey_write,
1754 .exit = hotkey_exit,
1755 .notify = hotkey_notify,
1756 .handle = &hkey_handle,
1757 .type = ACPI_DEVICE_NOTIFY,
1758 },
1759 {
1760 .name = "bluetooth",
1761 .init = bluetooth_init,
1762 .read = bluetooth_read,
1763 .write = bluetooth_write,
1764 },
42adb53c
JF		 1765 {
1766 .name = "wan",
1767 .init = wan_init,
1768 .read = wan_read,
1769 .write = wan_write,
1770 .experimental = 1,
1771 },
78f81cc4
BD		 1772 {
1773 .name = "video",
1774 .init = video_init,
1775 .read = video_read,
1776 .write = video_write,
1777 .exit = video_exit,
1778 },
1da177e4 1779 {
78f81cc4
BD		 1780 .name = "light",
1781 .init = light_init,
1782 .read = light_read,
1783 .write = light_write,
1784 },
63e5f248 1785#ifdef CONFIG_ACPI_IBM_DOCK
1da177e4 1786 {
78f81cc4
BD		 1787 .name = "dock",
1788 .read = dock_read,
1789 .write = dock_write,
1790 .notify = dock_notify,
1791 .handle = &dock_handle,
1792 .type = ACPI_SYSTEM_NOTIFY,
1793 },
1da177e4 1794 {
78f81cc4
BD		 1795 .name = "dock",
1796 .hid = IBM_PCI_HID,
1797 .notify = dock_notify,
1798 .handle = &pci_handle,
1799 .type = ACPI_SYSTEM_NOTIFY,
1800 },
63e5f248 1801#endif
1da177e4 1802 {
78f81cc4
BD		 1803 .name = "bay",
1804 .init = bay_init,
1805 .read = bay_read,
1806 .write = bay_write,
1807 .notify = bay_notify,
1808 .handle = &bay_handle,
1809 .type = ACPI_SYSTEM_NOTIFY,
1810 },
1da177e4 1811 {
78f81cc4
BD		 1812 .name = "cmos",
1813 .read = cmos_read,
1814 .write = cmos_write,
1815 },
1da177e4 1816 {
78f81cc4
BD		 1817 .name = "led",
1818 .init = led_init,
1819 .read = led_read,
1820 .write = led_write,
1821 },
1da177e4 1822 {
78f81cc4
BD		 1823 .name = "beep",
1824 .read = beep_read,
1825 .write = beep_write,
1826 },
1da177e4 1827 {
78f81cc4
BD		 1828 .name = "thermal",
1829 .init = thermal_init,
1830 .read = thermal_read,
1831 },
1da177e4 1832 {
78f81cc4
BD		 1833 .name = "ecdump",
1834 .read = ecdump_read,
1835 .write = ecdump_write,
1836 .experimental = 1,
1837 },
1838 {
1839 .name = "brightness",
1840 .read = brightness_read,
1841 .write = brightness_write,
78f81cc4
BD		 1842 },
1843 {
1844 .name = "volume",
1845 .read = volume_read,
1846 .write = volume_write,
78f81cc4
BD		 1847 },
1848 {
1849 .name = "fan",
1850 .read = fan_read,
1851 .write = fan_write,
1852 .experimental = 1,
1853 },
1da177e4 1854};
1da177e4
LT		 1855
1856static int dispatch_read(char *page, char **start, off_t off, int count,
1857 int *eof, void *data)
1858{
1859 struct ibm_struct *ibm = (struct ibm_struct *)data;
1860 int len;
78f81cc4 1861
1da177e4
LT		 1862 if (!ibm || !ibm->read)
1863 return -EINVAL;
1864
78f81cc4 1865 len = ibm->read(page);
1da177e4
LT		 1866 if (len < 0)
1867 return len;
1868
1869 if (len <= off + count)
1870 *eof = 1;
1871 *start = page + off;
1872 len -= off;
1873 if (len > count)
1874 len = count;
1875 if (len < 0)
1876 len = 0;
1877
1878 return len;
1879}
1880
78f81cc4 1881static int dispatch_write(struct file *file, const char __user * userbuf,
1da177e4
LT		 1882 unsigned long count, void *data)
1883{
1884 struct ibm_struct *ibm = (struct ibm_struct *)data;
1885 char *kernbuf;
1886 int ret;
1887
1888 if (!ibm || !ibm->write)
1889 return -EINVAL;
1890
1891 kernbuf = kmalloc(count + 2, GFP_KERNEL);
1892 if (!kernbuf)
1893 return -ENOMEM;
1894
78f81cc4 1895 if (copy_from_user(kernbuf, userbuf, count)) {
1da177e4 1896 kfree(kernbuf);
78f81cc4 1897 return -EFAULT;
1da177e4
LT		 1898 }
1899
1900 kernbuf[count] = 0;
1901 strcat(kernbuf, ",");
78f81cc4 1902 ret = ibm->write(kernbuf);
1da177e4
LT		 1903 if (ret == 0)
1904 ret = count;
1905
1906 kfree(kernbuf);
1907
78f81cc4 1908 return ret;
1da177e4
LT		 1909}
1910
1911static void dispatch_notify(acpi_handle handle, u32 event, void *data)
1912{
1913 struct ibm_struct *ibm = (struct ibm_struct *)data;
1914
1915 if (!ibm || !ibm->notify)
1916 return;
1917
1918 ibm->notify(ibm, event);
1919}
1920
78f81cc4 1921static int __init setup_notify(struct ibm_struct *ibm)
1da177e4
LT		 1922{
1923 acpi_status status;
1924 int ret;
1925
1926 if (!*ibm->handle)
1927 return 0;
1928
1929 ret = acpi_bus_get_device(*ibm->handle, &ibm->device);
1930 if (ret < 0) {
1931 printk(IBM_ERR "%s device not present\n", ibm->name);
1932 return 0;
1933 }
1934
1935 acpi_driver_data(ibm->device) = ibm;
1936 sprintf(acpi_device_class(ibm->device), "%s/%s", IBM_NAME, ibm->name);
1937
1938 status = acpi_install_notify_handler(*ibm->handle, ibm->type,
1939 dispatch_notify, ibm);
1940 if (ACPI_FAILURE(status)) {
1941 printk(IBM_ERR "acpi_install_notify_handler(%s) failed: %d\n",
1942 ibm->name, status);
1943 return -ENODEV;
1944 }
1945
1da177e4
LT		 1946 return 0;
1947}
1948
78f81cc4 1949static int __init ibm_device_add(struct acpi_device *device)
1da177e4
LT		 1950{
1951 return 0;
1952}
1953
78f81cc4 1954static int __init register_driver(struct ibm_struct *ibm)
1da177e4
LT		 1955{
1956 int ret;
1957
1958 ibm->driver = kmalloc(sizeof(struct acpi_driver), GFP_KERNEL);
1959 if (!ibm->driver) {
1960 printk(IBM_ERR "kmalloc(ibm->driver) failed\n");
1961 return -1;
1962 }
1963
1964 memset(ibm->driver, 0, sizeof(struct acpi_driver));
3dfd35cd 1965 sprintf(ibm->driver->name, "%s_%s", IBM_NAME, ibm->name);
1da177e4 1966 ibm->driver->ids = ibm->hid;
78f81cc4 1967 ibm->driver->ops.add = &ibm_device_add;
1da177e4
LT		 1968
1969 ret = acpi_bus_register_driver(ibm->driver);
1970 if (ret < 0) {
1971 printk(IBM_ERR "acpi_bus_register_driver(%s) failed: %d\n",
1972 ibm->hid, ret);
1973 kfree(ibm->driver);
1974 }
1975
1976 return ret;
1977}
1978
78f81cc4 1979static int __init ibm_init(struct ibm_struct *ibm)
1da177e4
LT		 1980{
1981 int ret;
1982 struct proc_dir_entry *entry;
1983
1984 if (ibm->experimental && !experimental)
1985 return 0;
1986
1987 if (ibm->hid) {
1988 ret = register_driver(ibm);
1989 if (ret < 0)
1990 return ret;
1991 ibm->driver_registered = 1;
1992 }
1993
1994 if (ibm->init) {
78f81cc4 1995 ret = ibm->init();
1da177e4
LT		 1996 if (ret != 0)
1997 return ret;
1998 ibm->init_called = 1;
1999 }
2000
78f81cc4
BD		 2001 if (ibm->read) {
2002 entry = create_proc_entry(ibm->name,
2003 S_IFREG | S_IRUGO | S_IWUSR,
2004 proc_dir);
2005 if (!entry) {
2006 printk(IBM_ERR "unable to create proc entry %s\n",
2007 ibm->name);
2008 return -ENODEV;
2009 }
2010 entry->owner = THIS_MODULE;
2011 entry->data = ibm;
1da177e4 2012 entry->read_proc = &dispatch_read;
78f81cc4
BD		 2013 if (ibm->write)
2014 entry->write_proc = &dispatch_write;
2015 ibm->proc_created = 1;
2016 }
1da177e4
LT		 2017
2018 if (ibm->notify) {
2019 ret = setup_notify(ibm);
2020 if (ret < 0)
2021 return ret;
78f81cc4 2022 ibm->notify_installed = 1;
1da177e4
LT		 2023 }
2024
2025 return 0;
2026}
2027
2028static void ibm_exit(struct ibm_struct *ibm)
2029{
2030 if (ibm->notify_installed)
2031 acpi_remove_notify_handler(*ibm->handle, ibm->type,
2032 dispatch_notify);
2033
2034 if (ibm->proc_created)
2035 remove_proc_entry(ibm->name, proc_dir);
2036
2037 if (ibm->init_called && ibm->exit)
78f81cc4 2038 ibm->exit();
1da177e4
LT		 2039
2040 if (ibm->driver_registered) {
2041 acpi_bus_unregister_driver(ibm->driver);
2042 kfree(ibm->driver);
2043 }
2044}
2045
78f81cc4
BD		 2046static void __init ibm_handle_init(char *name,
2047 acpi_handle * handle, acpi_handle parent,
2048 char **paths, int num_paths, char **path)
1da177e4
LT		 2049{
2050 int i;
2051 acpi_status status;
2052
78f81cc4 2053 for (i = 0; i < num_paths; i++) {
1da177e4 2054 status = acpi_get_handle(parent, paths[i], handle);
78f81cc4
BD		 2055 if (ACPI_SUCCESS(status)) {
2056 *path = paths[i];
2057 return;
2058 }
1da177e4
LT		 2059 }
2060
78f81cc4 2061 *handle = NULL;
1da177e4
LT		 2062}
2063
78f81cc4 2064#define IBM_HANDLE_INIT(object) \
1da177e4 2065 ibm_handle_init(#object, &object##_handle, *object##_parent, \
78f81cc4 2066 object##_paths, ARRAY_SIZE(object##_paths), &object##_path)
1da177e4
LT		 2067
2068static int set_ibm_param(const char *val, struct kernel_param *kp)
2069{
2070 unsigned int i;
1da177e4 2071
78f81cc4
BD		 2072 for (i = 0; i < ARRAY_SIZE(ibms); i++)
2073 if (strcmp(ibms[i].name, kp->name) == 0 && ibms[i].write) {
2074 if (strlen(val) > sizeof(ibms[i].param) - 2)
2075 return -ENOSPC;
2076 strcpy(ibms[i].param, val);
2077 strcat(ibms[i].param, ",");
2078 return 0;
2079 }
1da177e4 2080
1da177e4
LT		 2081 return -EINVAL;
2082}
2083
2084#define IBM_PARAM(feature) \
2085 module_param_call(feature, set_ibm_param, NULL, NULL, 0)
2086
78f81cc4
BD		 2087IBM_PARAM(hotkey);
2088IBM_PARAM(bluetooth);
2089IBM_PARAM(video);
2090IBM_PARAM(light);
63e5f248 2091#ifdef CONFIG_ACPI_IBM_DOCK
78f81cc4 2092IBM_PARAM(dock);
63e5f248 2093#endif
78f81cc4
BD		 2094IBM_PARAM(bay);
2095IBM_PARAM(cmos);
2096IBM_PARAM(led);
2097IBM_PARAM(beep);
2098IBM_PARAM(ecdump);
2099IBM_PARAM(brightness);
2100IBM_PARAM(volume);
2101IBM_PARAM(fan);
2102
8acb0250 2103static struct backlight_properties ibm_backlight_data = {
8d297264
HMH		 2104 .owner = THIS_MODULE,
2105 .get_brightness = brightness_get,
2106 .update_status = brightness_update_status,
2107 .max_brightness = 7,
8acb0250
HM		 2108};
2109
1da177e4
LT		 2110static void acpi_ibm_exit(void)
2111{
2112 int i;
2113
8acb0250
HM		 2114 if (ibm_backlight_device)
2115 backlight_device_unregister(ibm_backlight_device);
2116
78f81cc4 2117 for (i = ARRAY_SIZE(ibms) - 1; i >= 0; i--)
1da177e4
LT		 2118 ibm_exit(&ibms[i]);
2119
2120 remove_proc_entry(IBM_DIR, acpi_root_dir);
2121}
2122
60eb0b35
HMH		 2123static int __init check_dmi_for_ec(void)
2124{
2125 struct dmi_device *dev = NULL;
2126
2127 /*
2128 * ThinkPad T23 or newer, A31 or newer, R50e or newer,
2129 * X32 or newer, all Z series; Some models must have an
2130 * up-to-date BIOS or they will not be detected.
2131 *
2132 * See http://thinkwiki.org/wiki/List_of_DMI_IDs
2133 */
2134 while ((dev = dmi_find_device(DMI_DEV_TYPE_OEM_STRING, NULL, dev))) {
2135 if (strstr(dev->name, "IBM ThinkPad Embedded Controller"))
2136 return 1;
2137 }
2138 return 0;
2139}
2140
1da177e4
LT		 2141static int __init acpi_ibm_init(void)
2142{
2143 int ret, i;
2144
2145 if (acpi_disabled)
2146 return -ENODEV;
2147
78f81cc4
BD		 2148 if (!acpi_specific_hotkey_enabled) {
2149 printk(IBM_ERR "using generic hotkey driver\n");
1da177e4 2150 return -ENODEV;
78f81cc4 2151 }
1da177e4 2152
78f81cc4
BD		 2153 /* ec is required because many other handles are relative to it */
2154 IBM_HANDLE_INIT(ec);
2155 if (!ec_handle) {
2156 printk(IBM_ERR "ec object not found\n");
1da177e4 2157 return -ENODEV;
78f81cc4 2158 }
1da177e4 2159
60eb0b35
HMH		 2160 /* Models with newer firmware report the EC in DMI */
2161 ibm_thinkpad_ec_found = check_dmi_for_ec();
2162
1da177e4 2163 /* these handles are not required */
78f81cc4
BD		 2164 IBM_HANDLE_INIT(vid);
2165 IBM_HANDLE_INIT(vid2);
2166 IBM_HANDLE_INIT(ledb);
2167 IBM_HANDLE_INIT(led);
2168 IBM_HANDLE_INIT(hkey);
2169 IBM_HANDLE_INIT(lght);
2170 IBM_HANDLE_INIT(cmos);
63e5f248 2171#ifdef CONFIG_ACPI_IBM_DOCK
78f81cc4 2172 IBM_HANDLE_INIT(dock);
63e5f248 2173#endif
78f81cc4
BD		 2174 IBM_HANDLE_INIT(pci);
2175 IBM_HANDLE_INIT(bay);
2176 if (bay_handle)
2177 IBM_HANDLE_INIT(bay_ej);
2178 IBM_HANDLE_INIT(bay2);
2179 if (bay2_handle)
2180 IBM_HANDLE_INIT(bay2_ej);
2181 IBM_HANDLE_INIT(beep);
2182 IBM_HANDLE_INIT(ecrd);
2183 IBM_HANDLE_INIT(ecwr);
2184 IBM_HANDLE_INIT(fans);
2185 IBM_HANDLE_INIT(gfan);
2186 IBM_HANDLE_INIT(sfan);
1da177e4
LT		 2187
2188 proc_dir = proc_mkdir(IBM_DIR, acpi_root_dir);
2189 if (!proc_dir) {
2190 printk(IBM_ERR "unable to create proc dir %s", IBM_DIR);
2191 return -ENODEV;
2192 }
2193 proc_dir->owner = THIS_MODULE;
78f81cc4
BD		 2194
2195 for (i = 0; i < ARRAY_SIZE(ibms); i++) {
1da177e4 2196 ret = ibm_init(&ibms[i]);
78f81cc4
BD		 2197 if (ret >= 0 && *ibms[i].param)
2198 ret = ibms[i].write(ibms[i].param);
1da177e4
LT		 2199 if (ret < 0) {
2200 acpi_ibm_exit();
2201 return ret;
2202 }
2203 }
2204
8acb0250
HM		 2205 ibm_backlight_device = backlight_device_register("ibm", NULL,
2206 &ibm_backlight_data);
8d297264 2207 if (IS_ERR(ibm_backlight_device)) {
8acb0250
HM		 2208 printk(IBM_ERR "Could not register ibm backlight device\n");
2209 ibm_backlight_device = NULL;
2210 acpi_ibm_exit();
2211 }
2212
1da177e4
LT		 2213 return 0;
2214}
2215
2216module_init(acpi_ibm_init);
2217module_exit(acpi_ibm_exit);
Linux 6.x block layer and io_uring tree(s)