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x86: introduce init_memory_mapping for 32bit #3
[linux-2.6/linux-acpi-2.6/ibm-acpi-2.6.git] / drivers / misc / thinkpad_acpi.c
blobb5969298f3d32e677726c018bb142f60f6c53148
1 /*
2 * thinkpad_acpi.c - ThinkPad ACPI Extras
3 *
4 *
5 * Copyright (C) 2004-2005 Borislav Deianov <borislav@users.sf.net>
6 * Copyright (C) 2006-2008 Henrique de Moraes Holschuh <hmh@hmh.eng.br>
7 *
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
12 *
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
17 *
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
21 * 02110-1301, USA.
22 */
23
24 #define TPACPI_VERSION "0.20"
25 #define TPACPI_SYSFS_VERSION 0x020200
26
27 /*
28 * Changelog:
29 * 2007-10-20 changelog trimmed down
30 *
31 * 2007-03-27 0.14 renamed to thinkpad_acpi and moved to
32 * drivers/misc.
33 *
34 * 2006-11-22 0.13 new maintainer
35 * changelog now lives in git commit history, and will
36 * not be updated further in-file.
37 *
38 * 2005-03-17 0.11 support for 600e, 770x
39 * thanks to Jamie Lentin <lentinj@dial.pipex.com>
40 *
41 * 2005-01-16 0.9 use MODULE_VERSION
42 * thanks to Henrik Brix Andersen <brix@gentoo.org>
43 * fix parameter passing on module loading
44 * thanks to Rusty Russell <rusty@rustcorp.com.au>
45 * thanks to Jim Radford <radford@blackbean.org>
46 * 2004-11-08 0.8 fix init error case, don't return from a macro
47 * thanks to Chris Wright <chrisw@osdl.org>
48 */
49
50 #include <linux/kernel.h>
51 #include <linux/module.h>
52 #include <linux/init.h>
53 #include <linux/types.h>
54 #include <linux/string.h>
55 #include <linux/list.h>
56 #include <linux/mutex.h>
57 #include <linux/kthread.h>
58 #include <linux/freezer.h>
59 #include <linux/delay.h>
60
61 #include <linux/nvram.h>
62 #include <linux/proc_fs.h>
63 #include <linux/sysfs.h>
64 #include <linux/backlight.h>
65 #include <linux/fb.h>
66 #include <linux/platform_device.h>
67 #include <linux/hwmon.h>
68 #include <linux/hwmon-sysfs.h>
69 #include <linux/input.h>
70 #include <linux/leds.h>
71 #include <asm/uaccess.h>
72
73 #include <linux/dmi.h>
74 #include <linux/jiffies.h>
75 #include <linux/workqueue.h>
76
77 #include <acpi/acpi_drivers.h>
78 #include <acpi/acnamesp.h>
79
80 #include <linux/pci_ids.h>
81
82
83 /* ThinkPad CMOS commands */
84 #define TP_CMOS_VOLUME_DOWN 0
85 #define TP_CMOS_VOLUME_UP 1
86 #define TP_CMOS_VOLUME_MUTE 2
87 #define TP_CMOS_BRIGHTNESS_UP 4
88 #define TP_CMOS_BRIGHTNESS_DOWN 5
89 #define TP_CMOS_THINKLIGHT_ON 12
90 #define TP_CMOS_THINKLIGHT_OFF 13
91
92 /* NVRAM Addresses */
93 enum tp_nvram_addr {
94 TP_NVRAM_ADDR_HK2 = 0x57,
95 TP_NVRAM_ADDR_THINKLIGHT = 0x58,
96 TP_NVRAM_ADDR_VIDEO = 0x59,
97 TP_NVRAM_ADDR_BRIGHTNESS = 0x5e,
98 TP_NVRAM_ADDR_MIXER = 0x60,
99 };
100
101 /* NVRAM bit masks */
102 enum {
103 TP_NVRAM_MASK_HKT_THINKPAD = 0x08,
104 TP_NVRAM_MASK_HKT_ZOOM = 0x20,
105 TP_NVRAM_MASK_HKT_DISPLAY = 0x40,
106 TP_NVRAM_MASK_HKT_HIBERNATE = 0x80,
107 TP_NVRAM_MASK_THINKLIGHT = 0x10,
108 TP_NVRAM_MASK_HKT_DISPEXPND = 0x30,
109 TP_NVRAM_MASK_HKT_BRIGHTNESS = 0x20,
110 TP_NVRAM_MASK_LEVEL_BRIGHTNESS = 0x0f,
111 TP_NVRAM_POS_LEVEL_BRIGHTNESS = 0,
112 TP_NVRAM_MASK_MUTE = 0x40,
113 TP_NVRAM_MASK_HKT_VOLUME = 0x80,
114 TP_NVRAM_MASK_LEVEL_VOLUME = 0x0f,
115 TP_NVRAM_POS_LEVEL_VOLUME = 0,
116 };
117
118 /* ACPI HIDs */
119 #define TPACPI_ACPI_HKEY_HID "IBM0068"
120
121 /* Input IDs */
122 #define TPACPI_HKEY_INPUT_PRODUCT 0x5054 /* "TP" */
123 #define TPACPI_HKEY_INPUT_VERSION 0x4101
124
125
126 /****************************************************************************
127 * Main driver
128 */
129
130 #define TPACPI_NAME "thinkpad"
131 #define TPACPI_DESC "ThinkPad ACPI Extras"
132 #define TPACPI_FILE TPACPI_NAME "_acpi"
133 #define TPACPI_URL "http://ibm-acpi.sf.net/"
134 #define TPACPI_MAIL "ibm-acpi-devel@lists.sourceforge.net"
135
136 #define TPACPI_PROC_DIR "ibm"
137 #define TPACPI_ACPI_EVENT_PREFIX "ibm"
138 #define TPACPI_DRVR_NAME TPACPI_FILE
139 #define TPACPI_DRVR_SHORTNAME "tpacpi"
140 #define TPACPI_HWMON_DRVR_NAME TPACPI_NAME "_hwmon"
141
142 #define TPACPI_NVRAM_KTHREAD_NAME "ktpacpi_nvramd"
143 #define TPACPI_WORKQUEUE_NAME "ktpacpid"
144
145 #define TPACPI_MAX_ACPI_ARGS 3
146
147 /* Debugging */
148 #define TPACPI_LOG TPACPI_FILE ": "
149 #define TPACPI_ERR KERN_ERR TPACPI_LOG
150 #define TPACPI_NOTICE KERN_NOTICE TPACPI_LOG
151 #define TPACPI_INFO KERN_INFO TPACPI_LOG
152 #define TPACPI_DEBUG KERN_DEBUG TPACPI_LOG
153
154 #define TPACPI_DBG_ALL 0xffff
155 #define TPACPI_DBG_ALL 0xffff
156 #define TPACPI_DBG_INIT 0x0001
157 #define TPACPI_DBG_EXIT 0x0002
158 #define dbg_printk(a_dbg_level, format, arg...) \
159 do { if (dbg_level & a_dbg_level) \
160 printk(TPACPI_DEBUG "%s: " format, __func__ , ## arg); \
161 } while (0)
162 #ifdef CONFIG_THINKPAD_ACPI_DEBUG
163 #define vdbg_printk(a_dbg_level, format, arg...) \
164 dbg_printk(a_dbg_level, format, ## arg)
165 static const char *str_supported(int is_supported);
166 #else
167 #define vdbg_printk(a_dbg_level, format, arg...)
168 #endif
169
170 #define onoff(status, bit) ((status) & (1 << (bit)) ? "on" : "off")
171 #define enabled(status, bit) ((status) & (1 << (bit)) ? "enabled" : "disabled")
172 #define strlencmp(a, b) (strncmp((a), (b), strlen(b)))
173
174
175 /****************************************************************************
176 * Driver-wide structs and misc. variables
177 */
178
179 struct ibm_struct;
180
181 struct tp_acpi_drv_struct {
182 const struct acpi_device_id *hid;
183 struct acpi_driver *driver;
184
185 void (*notify) (struct ibm_struct *, u32);
186 acpi_handle *handle;
187 u32 type;
188 struct acpi_device *device;
189 };
190
191 struct ibm_struct {
192 char *name;
193
194 int (*read) (char *);
195 int (*write) (char *);
196 void (*exit) (void);
197 void (*resume) (void);
198 void (*suspend) (pm_message_t state);
199
200 struct list_head all_drivers;
201
202 struct tp_acpi_drv_struct *acpi;
203
204 struct {
205 u8 acpi_driver_registered:1;
206 u8 acpi_notify_installed:1;
207 u8 proc_created:1;
208 u8 init_called:1;
209 u8 experimental:1;
210 } flags;
211 };
212
213 struct ibm_init_struct {
214 char param[32];
215
216 int (*init) (struct ibm_init_struct *);
217 struct ibm_struct *data;
218 };
219
220 static struct {
221 #ifdef CONFIG_THINKPAD_ACPI_BAY
222 u32 bay_status:1;
223 u32 bay_eject:1;
224 u32 bay_status2:1;
225 u32 bay_eject2:1;
226 #endif
227 u32 bluetooth:1;
228 u32 hotkey:1;
229 u32 hotkey_mask:1;
230 u32 hotkey_wlsw:1;
231 u32 hotkey_tablet:1;
232 u32 light:1;
233 u32 light_status:1;
234 u32 bright_16levels:1;
235 u32 bright_acpimode:1;
236 u32 wan:1;
237 u32 fan_ctrl_status_undef:1;
238 u32 input_device_registered:1;
239 u32 platform_drv_registered:1;
240 u32 platform_drv_attrs_registered:1;
241 u32 sensors_pdrv_registered:1;
242 u32 sensors_pdrv_attrs_registered:1;
243 u32 sensors_pdev_attrs_registered:1;
244 u32 hotkey_poll_active:1;
245 } tp_features;
246
247 static struct {
248 u16 hotkey_mask_ff:1;
249 u16 bright_cmos_ec_unsync:1;
250 } tp_warned;
251
252 struct thinkpad_id_data {
253 unsigned int vendor; /* ThinkPad vendor:
254 * PCI_VENDOR_ID_IBM/PCI_VENDOR_ID_LENOVO */
255
256 char *bios_version_str; /* Something like 1ZET51WW (1.03z) */
257 char *ec_version_str; /* Something like 1ZHT51WW-1.04a */
258
259 u16 bios_model; /* Big Endian, TP-1Y = 0x5931, 0 = unknown */
260 u16 ec_model;
261
262 char *model_str; /* ThinkPad T43 */
263 char *nummodel_str; /* 9384A9C for a 9384-A9C model */
264 };
265 static struct thinkpad_id_data thinkpad_id;
266
267 static enum {
268 TPACPI_LIFE_INIT = 0,
269 TPACPI_LIFE_RUNNING,
270 TPACPI_LIFE_EXITING,
271 } tpacpi_lifecycle;
272
273 static int experimental;
274 static u32 dbg_level;
275
276 static struct workqueue_struct *tpacpi_wq;
277
278 /* Special LED class that can defer work */
279 struct tpacpi_led_classdev {
280 struct led_classdev led_classdev;
281 struct work_struct work;
282 enum led_brightness new_brightness;
283 unsigned int led;
284 };
285
286 /****************************************************************************
287 ****************************************************************************
288 *
289 * ACPI Helpers and device model
290 *
291 ****************************************************************************
292 ****************************************************************************/
293
294 /*************************************************************************
295 * ACPI basic handles
296 */
297
298 static acpi_handle root_handle;
299
300 #define TPACPI_HANDLE(object, parent, paths...) \
301 static acpi_handle object##_handle; \
302 static acpi_handle *object##_parent = &parent##_handle; \
303 static char *object##_path; \
304 static char *object##_paths[] = { paths }
305
306 TPACPI_HANDLE(ec, root, "\\_SB.PCI0.ISA.EC0", /* 240, 240x */
307 "\\_SB.PCI.ISA.EC", /* 570 */
308 "\\_SB.PCI0.ISA0.EC0", /* 600e/x, 770e, 770x */
309 "\\_SB.PCI0.ISA.EC", /* A21e, A2xm/p, T20-22, X20-21 */
310 "\\_SB.PCI0.AD4S.EC0", /* i1400, R30 */
311 "\\_SB.PCI0.ICH3.EC0", /* R31 */
312 "\\_SB.PCI0.LPC.EC", /* all others */
313 );
314
315 TPACPI_HANDLE(ecrd, ec, "ECRD"); /* 570 */
316 TPACPI_HANDLE(ecwr, ec, "ECWR"); /* 570 */
317
318 TPACPI_HANDLE(cmos, root, "\\UCMS", /* R50, R50e, R50p, R51, */
319 /* T4x, X31, X40 */
320 "\\CMOS", /* A3x, G4x, R32, T23, T30, X22-24, X30 */
321 "\\CMS", /* R40, R40e */
322 ); /* all others */
323
324 TPACPI_HANDLE(hkey, ec, "\\_SB.HKEY", /* 600e/x, 770e, 770x */
325 "^HKEY", /* R30, R31 */
326 "HKEY", /* all others */
327 ); /* 570 */
328
329 TPACPI_HANDLE(vid, root, "\\_SB.PCI.AGP.VGA", /* 570 */
330 "\\_SB.PCI0.AGP0.VID0", /* 600e/x, 770x */
331 "\\_SB.PCI0.VID0", /* 770e */
332 "\\_SB.PCI0.VID", /* A21e, G4x, R50e, X30, X40 */
333 "\\_SB.PCI0.AGP.VID", /* all others */
334 ); /* R30, R31 */
335
336
337 /*************************************************************************
338 * ACPI helpers
339 */
340
341 static int acpi_evalf(acpi_handle handle,
342 void *res, char *method, char *fmt, ...)
343 {
344 char *fmt0 = fmt;
345 struct acpi_object_list params;
346 union acpi_object in_objs[TPACPI_MAX_ACPI_ARGS];
347 struct acpi_buffer result, *resultp;
348 union acpi_object out_obj;
349 acpi_status status;
350 va_list ap;
351 char res_type;
352 int success;
353 int quiet;
354
355 if (!*fmt) {
356 printk(TPACPI_ERR "acpi_evalf() called with empty format\n");
357 return 0;
358 }
359
360 if (*fmt == 'q') {
361 quiet = 1;
362 fmt++;
363 } else
364 quiet = 0;
365
366 res_type = *(fmt++);
367
368 params.count = 0;
369 params.pointer = &in_objs[0];
370
371 va_start(ap, fmt);
372 while (*fmt) {
373 char c = *(fmt++);
374 switch (c) {
375 case 'd': /* int */
376 in_objs[params.count].integer.value = va_arg(ap, int);
377 in_objs[params.count++].type = ACPI_TYPE_INTEGER;
378 break;
379 /* add more types as needed */
380 default:
381 printk(TPACPI_ERR "acpi_evalf() called "
382 "with invalid format character '%c'\n", c);
383 return 0;
384 }
385 }
386 va_end(ap);
387
388 if (res_type != 'v') {
389 result.length = sizeof(out_obj);
390 result.pointer = &out_obj;
391 resultp = &result;
392 } else
393 resultp = NULL;
394
395 status = acpi_evaluate_object(handle, method, &params, resultp);
396
397 switch (res_type) {
398 case 'd': /* int */
399 if (res)
400 *(int *)res = out_obj.integer.value;
401 success = status == AE_OK && out_obj.type == ACPI_TYPE_INTEGER;
402 break;
403 case 'v': /* void */
404 success = status == AE_OK;
405 break;
406 /* add more types as needed */
407 default:
408 printk(TPACPI_ERR "acpi_evalf() called "
409 "with invalid format character '%c'\n", res_type);
410 return 0;
411 }
412
413 if (!success && !quiet)
414 printk(TPACPI_ERR "acpi_evalf(%s, %s, ...) failed: %d\n",
415 method, fmt0, status);
416
417 return success;
418 }
419
420 static int acpi_ec_read(int i, u8 *p)
421 {
422 int v;
423
424 if (ecrd_handle) {
425 if (!acpi_evalf(ecrd_handle, &v, NULL, "dd", i))
426 return 0;
427 *p = v;
428 } else {
429 if (ec_read(i, p) < 0)
430 return 0;
431 }
432
433 return 1;
434 }
435
436 static int acpi_ec_write(int i, u8 v)
437 {
438 if (ecwr_handle) {
439 if (!acpi_evalf(ecwr_handle, NULL, NULL, "vdd", i, v))
440 return 0;
441 } else {
442 if (ec_write(i, v) < 0)
443 return 0;
444 }
445
446 return 1;
447 }
448
449 #if defined(CONFIG_THINKPAD_ACPI_DOCK) || defined(CONFIG_THINKPAD_ACPI_BAY)
450 static int _sta(acpi_handle handle)
451 {
452 int status;
453
454 if (!handle || !acpi_evalf(handle, &status, "_STA", "d"))
455 status = 0;
456
457 return status;
458 }
459 #endif
460
461 static int issue_thinkpad_cmos_command(int cmos_cmd)
462 {
463 if (!cmos_handle)
464 return -ENXIO;
465
466 if (!acpi_evalf(cmos_handle, NULL, NULL, "vd", cmos_cmd))
467 return -EIO;
468
469 return 0;
470 }
471
472 /*************************************************************************
473 * ACPI device model
474 */
475
476 #define TPACPI_ACPIHANDLE_INIT(object) \
477 drv_acpi_handle_init(#object, &object##_handle, *object##_parent, \
478 object##_paths, ARRAY_SIZE(object##_paths), &object##_path)
479
480 static void drv_acpi_handle_init(char *name,
481 acpi_handle *handle, acpi_handle parent,
482 char **paths, int num_paths, char **path)
483 {
484 int i;
485 acpi_status status;
486
487 vdbg_printk(TPACPI_DBG_INIT, "trying to locate ACPI handle for %s\n",
488 name);
489
490 for (i = 0; i < num_paths; i++) {
491 status = acpi_get_handle(parent, paths[i], handle);
492 if (ACPI_SUCCESS(status)) {
493 *path = paths[i];
494 dbg_printk(TPACPI_DBG_INIT,
495 "Found ACPI handle %s for %s\n",
496 *path, name);
497 return;
498 }
499 }
500
501 vdbg_printk(TPACPI_DBG_INIT, "ACPI handle for %s not found\n",
502 name);
503 *handle = NULL;
504 }
505
506 static void dispatch_acpi_notify(acpi_handle handle, u32 event, void *data)
507 {
508 struct ibm_struct *ibm = data;
509
510 if (tpacpi_lifecycle != TPACPI_LIFE_RUNNING)
511 return;
512
513 if (!ibm || !ibm->acpi || !ibm->acpi->notify)
514 return;
515
516 ibm->acpi->notify(ibm, event);
517 }
518
519 static int __init setup_acpi_notify(struct ibm_struct *ibm)
520 {
521 acpi_status status;
522 int rc;
523
524 BUG_ON(!ibm->acpi);
525
526 if (!*ibm->acpi->handle)
527 return 0;
528
529 vdbg_printk(TPACPI_DBG_INIT,
530 "setting up ACPI notify for %s\n", ibm->name);
531
532 rc = acpi_bus_get_device(*ibm->acpi->handle, &ibm->acpi->device);
533 if (rc < 0) {
534 printk(TPACPI_ERR "acpi_bus_get_device(%s) failed: %d\n",
535 ibm->name, rc);
536 return -ENODEV;
537 }
538
539 acpi_driver_data(ibm->acpi->device) = ibm;
540 sprintf(acpi_device_class(ibm->acpi->device), "%s/%s",
541 TPACPI_ACPI_EVENT_PREFIX,
542 ibm->name);
543
544 status = acpi_install_notify_handler(*ibm->acpi->handle,
545 ibm->acpi->type, dispatch_acpi_notify, ibm);
546 if (ACPI_FAILURE(status)) {
547 if (status == AE_ALREADY_EXISTS) {
548 printk(TPACPI_NOTICE
549 "another device driver is already "
550 "handling %s events\n", ibm->name);
551 } else {
552 printk(TPACPI_ERR
553 "acpi_install_notify_handler(%s) failed: %d\n",
554 ibm->name, status);
555 }
556 return -ENODEV;
557 }
558 ibm->flags.acpi_notify_installed = 1;
559 return 0;
560 }
561
562 static int __init tpacpi_device_add(struct acpi_device *device)
563 {
564 return 0;
565 }
566
567 static int __init register_tpacpi_subdriver(struct ibm_struct *ibm)
568 {
569 int rc;
570
571 dbg_printk(TPACPI_DBG_INIT,
572 "registering %s as an ACPI driver\n", ibm->name);
573
574 BUG_ON(!ibm->acpi);
575
576 ibm->acpi->driver = kzalloc(sizeof(struct acpi_driver), GFP_KERNEL);
577 if (!ibm->acpi->driver) {
578 printk(TPACPI_ERR "kzalloc(ibm->driver) failed\n");
579 return -ENOMEM;
580 }
581
582 sprintf(ibm->acpi->driver->name, "%s_%s", TPACPI_NAME, ibm->name);
583 ibm->acpi->driver->ids = ibm->acpi->hid;
584
585 ibm->acpi->driver->ops.add = &tpacpi_device_add;
586
587 rc = acpi_bus_register_driver(ibm->acpi->driver);
588 if (rc < 0) {
589 printk(TPACPI_ERR "acpi_bus_register_driver(%s) failed: %d\n",
590 ibm->name, rc);
591 kfree(ibm->acpi->driver);
592 ibm->acpi->driver = NULL;
593 } else if (!rc)
594 ibm->flags.acpi_driver_registered = 1;
595
596 return rc;
597 }
598
599
600 /****************************************************************************
601 ****************************************************************************
602 *
603 * Procfs Helpers
604 *
605 ****************************************************************************
606 ****************************************************************************/
607
608 static int dispatch_procfs_read(char *page, char **start, off_t off,
609 int count, int *eof, void *data)
610 {
611 struct ibm_struct *ibm = data;
612 int len;
613
614 if (!ibm || !ibm->read)
615 return -EINVAL;
616
617 len = ibm->read(page);
618 if (len < 0)
619 return len;
620
621 if (len <= off + count)
622 *eof = 1;
623 *start = page + off;
624 len -= off;
625 if (len > count)
626 len = count;
627 if (len < 0)
628 len = 0;
629
630 return len;
631 }
632
633 static int dispatch_procfs_write(struct file *file,
634 const char __user *userbuf,
635 unsigned long count, void *data)
636 {
637 struct ibm_struct *ibm = data;
638 char *kernbuf;
639 int ret;
640
641 if (!ibm || !ibm->write)
642 return -EINVAL;
643
644 kernbuf = kmalloc(count + 2, GFP_KERNEL);
645 if (!kernbuf)
646 return -ENOMEM;
647
648 if (copy_from_user(kernbuf, userbuf, count)) {
649 kfree(kernbuf);
650 return -EFAULT;
651 }
652
653 kernbuf[count] = 0;
654 strcat(kernbuf, ",");
655 ret = ibm->write(kernbuf);
656 if (ret == 0)
657 ret = count;
658
659 kfree(kernbuf);
660
661 return ret;
662 }
663
664 static char *next_cmd(char **cmds)
665 {
666 char *start = *cmds;
667 char *end;
668
669 while ((end = strchr(start, ',')) && end == start)
670 start = end + 1;
671
672 if (!end)
673 return NULL;
674
675 *end = 0;
676 *cmds = end + 1;
677 return start;
678 }
679
680
681 /****************************************************************************
682 ****************************************************************************
683 *
684 * Device model: input, hwmon and platform
685 *
686 ****************************************************************************
687 ****************************************************************************/
688
689 static struct platform_device *tpacpi_pdev;
690 static struct platform_device *tpacpi_sensors_pdev;
691 static struct device *tpacpi_hwmon;
692 static struct input_dev *tpacpi_inputdev;
693 static struct mutex tpacpi_inputdev_send_mutex;
694 static LIST_HEAD(tpacpi_all_drivers);
695
696 static int tpacpi_suspend_handler(struct platform_device *pdev,
697 pm_message_t state)
698 {
699 struct ibm_struct *ibm, *itmp;
700
701 list_for_each_entry_safe(ibm, itmp,
702 &tpacpi_all_drivers,
703 all_drivers) {
704 if (ibm->suspend)
705 (ibm->suspend)(state);
706 }
707
708 return 0;
709 }
710
711 static int tpacpi_resume_handler(struct platform_device *pdev)
712 {
713 struct ibm_struct *ibm, *itmp;
714
715 list_for_each_entry_safe(ibm, itmp,
716 &tpacpi_all_drivers,
717 all_drivers) {
718 if (ibm->resume)
719 (ibm->resume)();
720 }
721
722 return 0;
723 }
724
725 static struct platform_driver tpacpi_pdriver = {
726 .driver = {
727 .name = TPACPI_DRVR_NAME,
728 .owner = THIS_MODULE,
729 },
730 .suspend = tpacpi_suspend_handler,
731 .resume = tpacpi_resume_handler,
732 };
733
734 static struct platform_driver tpacpi_hwmon_pdriver = {
735 .driver = {
736 .name = TPACPI_HWMON_DRVR_NAME,
737 .owner = THIS_MODULE,
738 },
739 };
740
741 /*************************************************************************
742 * sysfs support helpers
743 */
744
745 struct attribute_set {
746 unsigned int members, max_members;
747 struct attribute_group group;
748 };
749
750 struct attribute_set_obj {
751 struct attribute_set s;
752 struct attribute *a;
753 } __attribute__((packed));
754
755 static struct attribute_set *create_attr_set(unsigned int max_members,
756 const char *name)
757 {
758 struct attribute_set_obj *sobj;
759
760 if (max_members == 0)
761 return NULL;
762
763 /* Allocates space for implicit NULL at the end too */
764 sobj = kzalloc(sizeof(struct attribute_set_obj) +
765 max_members * sizeof(struct attribute *),
766 GFP_KERNEL);
767 if (!sobj)
768 return NULL;
769 sobj->s.max_members = max_members;
770 sobj->s.group.attrs = &sobj->a;
771 sobj->s.group.name = name;
772
773 return &sobj->s;
774 }
775
776 #define destroy_attr_set(_set) \
777 kfree(_set);
778
779 /* not multi-threaded safe, use it in a single thread per set */
780 static int add_to_attr_set(struct attribute_set *s, struct attribute *attr)
781 {
782 if (!s || !attr)
783 return -EINVAL;
784
785 if (s->members >= s->max_members)
786 return -ENOMEM;
787
788 s->group.attrs[s->members] = attr;
789 s->members++;
790
791 return 0;
792 }
793
794 static int add_many_to_attr_set(struct attribute_set *s,
795 struct attribute **attr,
796 unsigned int count)
797 {
798 int i, res;
799
800 for (i = 0; i < count; i++) {
801 res = add_to_attr_set(s, attr[i]);
802 if (res)
803 return res;
804 }
805
806 return 0;
807 }
808
809 static void delete_attr_set(struct attribute_set *s, struct kobject *kobj)
810 {
811 sysfs_remove_group(kobj, &s->group);
812 destroy_attr_set(s);
813 }
814
815 #define register_attr_set_with_sysfs(_attr_set, _kobj) \
816 sysfs_create_group(_kobj, &_attr_set->group)
817
818 static int parse_strtoul(const char *buf,
819 unsigned long max, unsigned long *value)
820 {
821 char *endp;
822
823 while (*buf && isspace(*buf))
824 buf++;
825 *value = simple_strtoul(buf, &endp, 0);
826 while (*endp && isspace(*endp))
827 endp++;
828 if (*endp || *value > max)
829 return -EINVAL;
830
831 return 0;
832 }
833
834 static int __init tpacpi_query_bcl_levels(acpi_handle handle)
835 {
836 struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
837 union acpi_object *obj;
838 int rc;
839
840 if (ACPI_SUCCESS(acpi_evaluate_object(handle, NULL, NULL, &buffer))) {
841 obj = (union acpi_object *)buffer.pointer;
842 if (!obj || (obj->type != ACPI_TYPE_PACKAGE)) {
843 printk(TPACPI_ERR "Unknown _BCL data, "
844 "please report this to %s\n", TPACPI_MAIL);
845 rc = 0;
846 } else {
847 rc = obj->package.count;
848 }
849 } else {
850 return 0;
851 }
852
853 kfree(buffer.pointer);
854 return rc;
855 }
856
857 static acpi_status __init tpacpi_acpi_walk_find_bcl(acpi_handle handle,
858 u32 lvl, void *context, void **rv)
859 {
860 char name[ACPI_PATH_SEGMENT_LENGTH];
861 struct acpi_buffer buffer = { sizeof(name), &name };
862
863 if (ACPI_SUCCESS(acpi_get_name(handle, ACPI_SINGLE_NAME, &buffer)) &&
864 !strncmp("_BCL", name, sizeof(name) - 1)) {
865 BUG_ON(!rv || !*rv);
866 **(int **)rv = tpacpi_query_bcl_levels(handle);
867 return AE_CTRL_TERMINATE;
868 } else {
869 return AE_OK;
870 }
871 }
872
873 /*
874 * Returns 0 (no ACPI _BCL or _BCL invalid), or size of brightness map
875 */
876 static int __init tpacpi_check_std_acpi_brightness_support(void)
877 {
878 int status;
879 int bcl_levels = 0;
880 void *bcl_ptr = &bcl_levels;
881
882 if (!vid_handle) {
883 TPACPI_ACPIHANDLE_INIT(vid);
884 }
885 if (!vid_handle)
886 return 0;
887
888 /*
889 * Search for a _BCL method, and execute it. This is safe on all
890 * ThinkPads, and as a side-effect, _BCL will place a Lenovo Vista
891 * BIOS in ACPI backlight control mode. We do NOT have to care
892 * about calling the _BCL method in an enabled video device, any
893 * will do for our purposes.
894 */
895
896 status = acpi_walk_namespace(ACPI_TYPE_METHOD, vid_handle, 3,
897 tpacpi_acpi_walk_find_bcl, NULL,
898 &bcl_ptr);
899
900 if (ACPI_SUCCESS(status) && bcl_levels > 2) {
901 tp_features.bright_acpimode = 1;
902 return (bcl_levels - 2);
903 }
904
905 return 0;
906 }
907
908 /*************************************************************************
909 * thinkpad-acpi driver attributes
910 */
911
912 /* interface_version --------------------------------------------------- */
913 static ssize_t tpacpi_driver_interface_version_show(
914 struct device_driver *drv,
915 char *buf)
916 {
917 return snprintf(buf, PAGE_SIZE, "0x%08x\n", TPACPI_SYSFS_VERSION);
918 }
919
920 static DRIVER_ATTR(interface_version, S_IRUGO,
921 tpacpi_driver_interface_version_show, NULL);
922
923 /* debug_level --------------------------------------------------------- */
924 static ssize_t tpacpi_driver_debug_show(struct device_driver *drv,
925 char *buf)
926 {
927 return snprintf(buf, PAGE_SIZE, "0x%04x\n", dbg_level);
928 }
929
930 static ssize_t tpacpi_driver_debug_store(struct device_driver *drv,
931 const char *buf, size_t count)
932 {
933 unsigned long t;
934
935 if (parse_strtoul(buf, 0xffff, &t))
936 return -EINVAL;
937
938 dbg_level = t;
939
940 return count;
941 }
942
943 static DRIVER_ATTR(debug_level, S_IWUSR | S_IRUGO,
944 tpacpi_driver_debug_show, tpacpi_driver_debug_store);
945
946 /* version ------------------------------------------------------------- */
947 static ssize_t tpacpi_driver_version_show(struct device_driver *drv,
948 char *buf)
949 {
950 return snprintf(buf, PAGE_SIZE, "%s v%s\n",
951 TPACPI_DESC, TPACPI_VERSION);
952 }
953
954 static DRIVER_ATTR(version, S_IRUGO,
955 tpacpi_driver_version_show, NULL);
956
957 /* --------------------------------------------------------------------- */
958
959 static struct driver_attribute *tpacpi_driver_attributes[] = {
960 &driver_attr_debug_level, &driver_attr_version,
961 &driver_attr_interface_version,
962 };
963
964 static int __init tpacpi_create_driver_attributes(struct device_driver *drv)
965 {
966 int i, res;
967
968 i = 0;
969 res = 0;
970 while (!res && i < ARRAY_SIZE(tpacpi_driver_attributes)) {
971 res = driver_create_file(drv, tpacpi_driver_attributes[i]);
972 i++;
973 }
974
975 return res;
976 }
977
978 static void tpacpi_remove_driver_attributes(struct device_driver *drv)
979 {
980 int i;
981
982 for (i = 0; i < ARRAY_SIZE(tpacpi_driver_attributes); i++)
983 driver_remove_file(drv, tpacpi_driver_attributes[i]);
984 }
985
986 /****************************************************************************
987 ****************************************************************************
988 *
989 * Subdrivers
990 *
991 ****************************************************************************
992 ****************************************************************************/
993
994 /*************************************************************************
995 * thinkpad-acpi init subdriver
996 */
997
998 static int __init thinkpad_acpi_driver_init(struct ibm_init_struct *iibm)
999 {
1000 printk(TPACPI_INFO "%s v%s\n", TPACPI_DESC, TPACPI_VERSION);
1001 printk(TPACPI_INFO "%s\n", TPACPI_URL);
1002
1003 printk(TPACPI_INFO "ThinkPad BIOS %s, EC %s\n",
1004 (thinkpad_id.bios_version_str) ?
1005 thinkpad_id.bios_version_str : "unknown",
1006 (thinkpad_id.ec_version_str) ?
1007 thinkpad_id.ec_version_str : "unknown");
1008
1009 if (thinkpad_id.vendor && thinkpad_id.model_str)
1010 printk(TPACPI_INFO "%s %s, model %s\n",
1011 (thinkpad_id.vendor == PCI_VENDOR_ID_IBM) ?
1012 "IBM" : ((thinkpad_id.vendor ==
1013 PCI_VENDOR_ID_LENOVO) ?
1014 "Lenovo" : "Unknown vendor"),
1015 thinkpad_id.model_str,
1016 (thinkpad_id.nummodel_str) ?
1017 thinkpad_id.nummodel_str : "unknown");
1018
1019 return 0;
1020 }
1021
1022 static int thinkpad_acpi_driver_read(char *p)
1023 {
1024 int len = 0;
1025
1026 len += sprintf(p + len, "driver:\t\t%s\n", TPACPI_DESC);
1027 len += sprintf(p + len, "version:\t%s\n", TPACPI_VERSION);
1028
1029 return len;
1030 }
1031
1032 static struct ibm_struct thinkpad_acpi_driver_data = {
1033 .name = "driver",
1034 .read = thinkpad_acpi_driver_read,
1035 };
1036
1037 /*************************************************************************
1038 * Hotkey subdriver
1039 */
1040
1041 enum { /* hot key scan codes (derived from ACPI DSDT) */
1042 TP_ACPI_HOTKEYSCAN_FNF1 = 0,
1043 TP_ACPI_HOTKEYSCAN_FNF2,
1044 TP_ACPI_HOTKEYSCAN_FNF3,
1045 TP_ACPI_HOTKEYSCAN_FNF4,
1046 TP_ACPI_HOTKEYSCAN_FNF5,
1047 TP_ACPI_HOTKEYSCAN_FNF6,
1048 TP_ACPI_HOTKEYSCAN_FNF7,
1049 TP_ACPI_HOTKEYSCAN_FNF8,
1050 TP_ACPI_HOTKEYSCAN_FNF9,
1051 TP_ACPI_HOTKEYSCAN_FNF10,
1052 TP_ACPI_HOTKEYSCAN_FNF11,
1053 TP_ACPI_HOTKEYSCAN_FNF12,
1054 TP_ACPI_HOTKEYSCAN_FNBACKSPACE,
1055 TP_ACPI_HOTKEYSCAN_FNINSERT,
1056 TP_ACPI_HOTKEYSCAN_FNDELETE,
1057 TP_ACPI_HOTKEYSCAN_FNHOME,
1058 TP_ACPI_HOTKEYSCAN_FNEND,
1059 TP_ACPI_HOTKEYSCAN_FNPAGEUP,
1060 TP_ACPI_HOTKEYSCAN_FNPAGEDOWN,
1061 TP_ACPI_HOTKEYSCAN_FNSPACE,
1062 TP_ACPI_HOTKEYSCAN_VOLUMEUP,
1063 TP_ACPI_HOTKEYSCAN_VOLUMEDOWN,
1064 TP_ACPI_HOTKEYSCAN_MUTE,
1065 TP_ACPI_HOTKEYSCAN_THINKPAD,
1066 };
1067
1068 enum { /* Keys available through NVRAM polling */
1069 TPACPI_HKEY_NVRAM_KNOWN_MASK = 0x00fb88c0U,
1070 TPACPI_HKEY_NVRAM_GOOD_MASK = 0x00fb8000U,
1071 };
1072
1073 enum { /* Positions of some of the keys in hotkey masks */
1074 TP_ACPI_HKEY_DISPSWTCH_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNF7,
1075 TP_ACPI_HKEY_DISPXPAND_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNF8,
1076 TP_ACPI_HKEY_HIBERNATE_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNF12,
1077 TP_ACPI_HKEY_BRGHTUP_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNHOME,
1078 TP_ACPI_HKEY_BRGHTDWN_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNEND,
1079 TP_ACPI_HKEY_THNKLGHT_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNPAGEUP,
1080 TP_ACPI_HKEY_ZOOM_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNSPACE,
1081 TP_ACPI_HKEY_VOLUP_MASK = 1 << TP_ACPI_HOTKEYSCAN_VOLUMEUP,
1082 TP_ACPI_HKEY_VOLDWN_MASK = 1 << TP_ACPI_HOTKEYSCAN_VOLUMEDOWN,
1083 TP_ACPI_HKEY_MUTE_MASK = 1 << TP_ACPI_HOTKEYSCAN_MUTE,
1084 TP_ACPI_HKEY_THINKPAD_MASK = 1 << TP_ACPI_HOTKEYSCAN_THINKPAD,
1085 };
1086
1087 enum { /* NVRAM to ACPI HKEY group map */
1088 TP_NVRAM_HKEY_GROUP_HK2 = TP_ACPI_HKEY_THINKPAD_MASK |
1089 TP_ACPI_HKEY_ZOOM_MASK |
1090 TP_ACPI_HKEY_DISPSWTCH_MASK |
1091 TP_ACPI_HKEY_HIBERNATE_MASK,
1092 TP_NVRAM_HKEY_GROUP_BRIGHTNESS = TP_ACPI_HKEY_BRGHTUP_MASK |
1093 TP_ACPI_HKEY_BRGHTDWN_MASK,
1094 TP_NVRAM_HKEY_GROUP_VOLUME = TP_ACPI_HKEY_VOLUP_MASK |
1095 TP_ACPI_HKEY_VOLDWN_MASK |
1096 TP_ACPI_HKEY_MUTE_MASK,
1097 };
1098
1099 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
1100 struct tp_nvram_state {
1101 u16 thinkpad_toggle:1;
1102 u16 zoom_toggle:1;
1103 u16 display_toggle:1;
1104 u16 thinklight_toggle:1;
1105 u16 hibernate_toggle:1;
1106 u16 displayexp_toggle:1;
1107 u16 display_state:1;
1108 u16 brightness_toggle:1;
1109 u16 volume_toggle:1;
1110 u16 mute:1;
1111
1112 u8 brightness_level;
1113 u8 volume_level;
1114 };
1115
1116 static struct task_struct *tpacpi_hotkey_task;
1117 static u32 hotkey_source_mask; /* bit mask 0=ACPI,1=NVRAM */
1118 static int hotkey_poll_freq = 10; /* Hz */
1119 static struct mutex hotkey_thread_mutex;
1120 static struct mutex hotkey_thread_data_mutex;
1121 static unsigned int hotkey_config_change;
1122
1123 #else /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
1124
1125 #define hotkey_source_mask 0U
1126
1127 #endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
1128
1129 static struct mutex hotkey_mutex;
1130
1131 static enum { /* Reasons for waking up */
1132 TP_ACPI_WAKEUP_NONE = 0, /* None or unknown */
1133 TP_ACPI_WAKEUP_BAYEJ, /* Bay ejection request */
1134 TP_ACPI_WAKEUP_UNDOCK, /* Undock request */
1135 } hotkey_wakeup_reason;
1136
1137 static int hotkey_autosleep_ack;
1138
1139 static int hotkey_orig_status;
1140 static u32 hotkey_orig_mask;
1141 static u32 hotkey_all_mask;
1142 static u32 hotkey_reserved_mask;
1143 static u32 hotkey_mask;
1144
1145 static unsigned int hotkey_report_mode;
1146
1147 static u16 *hotkey_keycode_map;
1148
1149 static struct attribute_set *hotkey_dev_attributes;
1150
1151 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
1152 #define HOTKEY_CONFIG_CRITICAL_START \
1153 do { \
1154 mutex_lock(&hotkey_thread_data_mutex); \
1155 hotkey_config_change++; \
1156 } while (0);
1157 #define HOTKEY_CONFIG_CRITICAL_END \
1158 mutex_unlock(&hotkey_thread_data_mutex);
1159 #else
1160 #define HOTKEY_CONFIG_CRITICAL_START
1161 #define HOTKEY_CONFIG_CRITICAL_END
1162 #endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
1163
1164 /* HKEY.MHKG() return bits */
1165 #define TP_HOTKEY_TABLET_MASK (1 << 3)
1166
1167 static int hotkey_get_wlsw(int *status)
1168 {
1169 if (!acpi_evalf(hkey_handle, status, "WLSW", "d"))
1170 return -EIO;
1171 return 0;
1172 }
1173
1174 static int hotkey_get_tablet_mode(int *status)
1175 {
1176 int s;
1177
1178 if (!acpi_evalf(hkey_handle, &s, "MHKG", "d"))
1179 return -EIO;
1180
1181 *status = ((s & TP_HOTKEY_TABLET_MASK) != 0);
1182 return 0;
1183 }
1184
1185 /*
1186 * Call with hotkey_mutex held
1187 */
1188 static int hotkey_mask_get(void)
1189 {
1190 u32 m = 0;
1191
1192 if (tp_features.hotkey_mask) {
1193 if (!acpi_evalf(hkey_handle, &m, "DHKN", "d"))
1194 return -EIO;
1195 }
1196 hotkey_mask = m | (hotkey_source_mask & hotkey_mask);
1197
1198 return 0;
1199 }
1200
1201 /*
1202 * Call with hotkey_mutex held
1203 */
1204 static int hotkey_mask_set(u32 mask)
1205 {
1206 int i;
1207 int rc = 0;
1208
1209 if (tp_features.hotkey_mask) {
1210 if (!tp_warned.hotkey_mask_ff &&
1211 (mask == 0xffff || mask == 0xffffff ||
1212 mask == 0xffffffff)) {
1213 tp_warned.hotkey_mask_ff = 1;
1214 printk(TPACPI_NOTICE
1215 "setting the hotkey mask to 0x%08x is likely "
1216 "not the best way to go about it\n", mask);
1217 printk(TPACPI_NOTICE
1218 "please consider using the driver defaults, "
1219 "and refer to up-to-date thinkpad-acpi "
1220 "documentation\n");
1221 }
1222
1223 HOTKEY_CONFIG_CRITICAL_START
1224 for (i = 0; i < 32; i++) {
1225 u32 m = 1 << i;
1226 /* enable in firmware mask only keys not in NVRAM
1227 * mode, but enable the key in the cached hotkey_mask
1228 * regardless of mode, or the key will end up
1229 * disabled by hotkey_mask_get() */
1230 if (!acpi_evalf(hkey_handle,
1231 NULL, "MHKM", "vdd", i + 1,
1232 !!((mask & ~hotkey_source_mask) & m))) {
1233 rc = -EIO;
1234 break;
1235 } else {
1236 hotkey_mask = (hotkey_mask & ~m) | (mask & m);
1237 }
1238 }
1239 HOTKEY_CONFIG_CRITICAL_END
1240
1241 /* hotkey_mask_get must be called unconditionally below */
1242 if (!hotkey_mask_get() && !rc &&
1243 (hotkey_mask & ~hotkey_source_mask) !=
1244 (mask & ~hotkey_source_mask)) {
1245 printk(TPACPI_NOTICE
1246 "requested hot key mask 0x%08x, but "
1247 "firmware forced it to 0x%08x\n",
1248 mask, hotkey_mask);
1249 }
1250 } else {
1251 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
1252 HOTKEY_CONFIG_CRITICAL_START
1253 hotkey_mask = mask & hotkey_source_mask;
1254 HOTKEY_CONFIG_CRITICAL_END
1255 hotkey_mask_get();
1256 if (hotkey_mask != mask) {
1257 printk(TPACPI_NOTICE
1258 "requested hot key mask 0x%08x, "
1259 "forced to 0x%08x (NVRAM poll mask is "
1260 "0x%08x): no firmware mask support\n",
1261 mask, hotkey_mask, hotkey_source_mask);
1262 }
1263 #else
1264 hotkey_mask_get();
1265 rc = -ENXIO;
1266 #endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
1267 }
1268
1269 return rc;
1270 }
1271
1272 static int hotkey_status_get(int *status)
1273 {
1274 if (!acpi_evalf(hkey_handle, status, "DHKC", "d"))
1275 return -EIO;
1276
1277 return 0;
1278 }
1279
1280 static int hotkey_status_set(int status)
1281 {
1282 if (!acpi_evalf(hkey_handle, NULL, "MHKC", "vd", status))
1283 return -EIO;
1284
1285 return 0;
1286 }
1287
1288 static void tpacpi_input_send_radiosw(void)
1289 {
1290 int wlsw;
1291
1292 if (tp_features.hotkey_wlsw && !hotkey_get_wlsw(&wlsw)) {
1293 mutex_lock(&tpacpi_inputdev_send_mutex);
1294
1295 input_report_switch(tpacpi_inputdev,
1296 SW_RFKILL_ALL, !!wlsw);
1297 input_sync(tpacpi_inputdev);
1298
1299 mutex_unlock(&tpacpi_inputdev_send_mutex);
1300 }
1301 }
1302
1303 static void tpacpi_input_send_tabletsw(void)
1304 {
1305 int state;
1306
1307 if (tp_features.hotkey_tablet &&
1308 !hotkey_get_tablet_mode(&state)) {
1309 mutex_lock(&tpacpi_inputdev_send_mutex);
1310
1311 input_report_switch(tpacpi_inputdev,
1312 SW_TABLET_MODE, !!state);
1313 input_sync(tpacpi_inputdev);
1314
1315 mutex_unlock(&tpacpi_inputdev_send_mutex);
1316 }
1317 }
1318
1319 static void tpacpi_input_send_key(unsigned int scancode)
1320 {
1321 unsigned int keycode;
1322
1323 keycode = hotkey_keycode_map[scancode];
1324
1325 if (keycode != KEY_RESERVED) {
1326 mutex_lock(&tpacpi_inputdev_send_mutex);
1327
1328 input_report_key(tpacpi_inputdev, keycode, 1);
1329 if (keycode == KEY_UNKNOWN)
1330 input_event(tpacpi_inputdev, EV_MSC, MSC_SCAN,
1331 scancode);
1332 input_sync(tpacpi_inputdev);
1333
1334 input_report_key(tpacpi_inputdev, keycode, 0);
1335 if (keycode == KEY_UNKNOWN)
1336 input_event(tpacpi_inputdev, EV_MSC, MSC_SCAN,
1337 scancode);
1338 input_sync(tpacpi_inputdev);
1339
1340 mutex_unlock(&tpacpi_inputdev_send_mutex);
1341 }
1342 }
1343
1344 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
1345 static struct tp_acpi_drv_struct ibm_hotkey_acpidriver;
1346
1347 static void tpacpi_hotkey_send_key(unsigned int scancode)
1348 {
1349 tpacpi_input_send_key(scancode);
1350 if (hotkey_report_mode < 2) {
1351 acpi_bus_generate_proc_event(ibm_hotkey_acpidriver.device,
1352 0x80, 0x1001 + scancode);
1353 }
1354 }
1355
1356 static void hotkey_read_nvram(struct tp_nvram_state *n, u32 m)
1357 {
1358 u8 d;
1359
1360 if (m & TP_NVRAM_HKEY_GROUP_HK2) {
1361 d = nvram_read_byte(TP_NVRAM_ADDR_HK2);
1362 n->thinkpad_toggle = !!(d & TP_NVRAM_MASK_HKT_THINKPAD);
1363 n->zoom_toggle = !!(d & TP_NVRAM_MASK_HKT_ZOOM);
1364 n->display_toggle = !!(d & TP_NVRAM_MASK_HKT_DISPLAY);
1365 n->hibernate_toggle = !!(d & TP_NVRAM_MASK_HKT_HIBERNATE);
1366 }
1367 if (m & TP_ACPI_HKEY_THNKLGHT_MASK) {
1368 d = nvram_read_byte(TP_NVRAM_ADDR_THINKLIGHT);
1369 n->thinklight_toggle = !!(d & TP_NVRAM_MASK_THINKLIGHT);
1370 }
1371 if (m & TP_ACPI_HKEY_DISPXPAND_MASK) {
1372 d = nvram_read_byte(TP_NVRAM_ADDR_VIDEO);
1373 n->displayexp_toggle =
1374 !!(d & TP_NVRAM_MASK_HKT_DISPEXPND);
1375 }
1376 if (m & TP_NVRAM_HKEY_GROUP_BRIGHTNESS) {
1377 d = nvram_read_byte(TP_NVRAM_ADDR_BRIGHTNESS);
1378 n->brightness_level = (d & TP_NVRAM_MASK_LEVEL_BRIGHTNESS)
1379 >> TP_NVRAM_POS_LEVEL_BRIGHTNESS;
1380 n->brightness_toggle =
1381 !!(d & TP_NVRAM_MASK_HKT_BRIGHTNESS);
1382 }
1383 if (m & TP_NVRAM_HKEY_GROUP_VOLUME) {
1384 d = nvram_read_byte(TP_NVRAM_ADDR_MIXER);
1385 n->volume_level = (d & TP_NVRAM_MASK_LEVEL_VOLUME)
1386 >> TP_NVRAM_POS_LEVEL_VOLUME;
1387 n->mute = !!(d & TP_NVRAM_MASK_MUTE);
1388 n->volume_toggle = !!(d & TP_NVRAM_MASK_HKT_VOLUME);
1389 }
1390 }
1391
1392 #define TPACPI_COMPARE_KEY(__scancode, __member) \
1393 do { \
1394 if ((mask & (1 << __scancode)) && \
1395 oldn->__member != newn->__member) \
1396 tpacpi_hotkey_send_key(__scancode); \
1397 } while (0)
1398
1399 #define TPACPI_MAY_SEND_KEY(__scancode) \
1400 do { if (mask & (1 << __scancode)) \
1401 tpacpi_hotkey_send_key(__scancode); } while (0)
1402
1403 static void hotkey_compare_and_issue_event(struct tp_nvram_state *oldn,
1404 struct tp_nvram_state *newn,
1405 u32 mask)
1406 {
1407 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_THINKPAD, thinkpad_toggle);
1408 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNSPACE, zoom_toggle);
1409 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNF7, display_toggle);
1410 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNF12, hibernate_toggle);
1411
1412 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNPAGEUP, thinklight_toggle);
1413
1414 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNF8, displayexp_toggle);
1415
1416 /* handle volume */
1417 if (oldn->volume_toggle != newn->volume_toggle) {
1418 if (oldn->mute != newn->mute) {
1419 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_MUTE);
1420 }
1421 if (oldn->volume_level > newn->volume_level) {
1422 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEDOWN);
1423 } else if (oldn->volume_level < newn->volume_level) {
1424 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEUP);
1425 } else if (oldn->mute == newn->mute) {
1426 /* repeated key presses that didn't change state */
1427 if (newn->mute) {
1428 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_MUTE);
1429 } else if (newn->volume_level != 0) {
1430 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEUP);
1431 } else {
1432 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEDOWN);
1433 }
1434 }
1435 }
1436
1437 /* handle brightness */
1438 if (oldn->brightness_toggle != newn->brightness_toggle) {
1439 if (oldn->brightness_level < newn->brightness_level) {
1440 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNHOME);
1441 } else if (oldn->brightness_level > newn->brightness_level) {
1442 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNEND);
1443 } else {
1444 /* repeated key presses that didn't change state */
1445 if (newn->brightness_level != 0) {
1446 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNHOME);
1447 } else {
1448 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNEND);
1449 }
1450 }
1451 }
1452 }
1453
1454 #undef TPACPI_COMPARE_KEY
1455 #undef TPACPI_MAY_SEND_KEY
1456
1457 static int hotkey_kthread(void *data)
1458 {
1459 struct tp_nvram_state s[2];
1460 u32 mask;
1461 unsigned int si, so;
1462 unsigned long t;
1463 unsigned int change_detector, must_reset;
1464
1465 mutex_lock(&hotkey_thread_mutex);
1466
1467 if (tpacpi_lifecycle == TPACPI_LIFE_EXITING)
1468 goto exit;
1469
1470 set_freezable();
1471
1472 so = 0;
1473 si = 1;
1474 t = 0;
1475
1476 /* Initial state for compares */
1477 mutex_lock(&hotkey_thread_data_mutex);
1478 change_detector = hotkey_config_change;
1479 mask = hotkey_source_mask & hotkey_mask;
1480 mutex_unlock(&hotkey_thread_data_mutex);
1481 hotkey_read_nvram(&s[so], mask);
1482
1483 while (!kthread_should_stop() && hotkey_poll_freq) {
1484 if (t == 0)
1485 t = 1000/hotkey_poll_freq;
1486 t = msleep_interruptible(t);
1487 if (unlikely(kthread_should_stop()))
1488 break;
1489 must_reset = try_to_freeze();
1490 if (t > 0 && !must_reset)
1491 continue;
1492
1493 mutex_lock(&hotkey_thread_data_mutex);
1494 if (must_reset || hotkey_config_change != change_detector) {
1495 /* forget old state on thaw or config change */
1496 si = so;
1497 t = 0;
1498 change_detector = hotkey_config_change;
1499 }
1500 mask = hotkey_source_mask & hotkey_mask;
1501 mutex_unlock(&hotkey_thread_data_mutex);
1502
1503 if (likely(mask)) {
1504 hotkey_read_nvram(&s[si], mask);
1505 if (likely(si != so)) {
1506 hotkey_compare_and_issue_event(&s[so], &s[si],
1507 mask);
1508 }
1509 }
1510
1511 so = si;
1512 si ^= 1;
1513 }
1514
1515 exit:
1516 mutex_unlock(&hotkey_thread_mutex);
1517 return 0;
1518 }
1519
1520 static void hotkey_poll_stop_sync(void)
1521 {
1522 if (tpacpi_hotkey_task) {
1523 if (frozen(tpacpi_hotkey_task) ||
1524 freezing(tpacpi_hotkey_task))
1525 thaw_process(tpacpi_hotkey_task);
1526
1527 kthread_stop(tpacpi_hotkey_task);
1528 tpacpi_hotkey_task = NULL;
1529 mutex_lock(&hotkey_thread_mutex);
1530 /* at this point, the thread did exit */
1531 mutex_unlock(&hotkey_thread_mutex);
1532 }
1533 }
1534
1535 /* call with hotkey_mutex held */
1536 static void hotkey_poll_setup(int may_warn)
1537 {
1538 if ((hotkey_source_mask & hotkey_mask) != 0 &&
1539 hotkey_poll_freq > 0 &&
1540 (tpacpi_inputdev->users > 0 || hotkey_report_mode < 2)) {
1541 if (!tpacpi_hotkey_task) {
1542 tpacpi_hotkey_task = kthread_run(hotkey_kthread,
1543 NULL, TPACPI_NVRAM_KTHREAD_NAME);
1544 if (IS_ERR(tpacpi_hotkey_task)) {
1545 tpacpi_hotkey_task = NULL;
1546 printk(TPACPI_ERR
1547 "could not create kernel thread "
1548 "for hotkey polling\n");
1549 }
1550 }
1551 } else {
1552 hotkey_poll_stop_sync();
1553 if (may_warn &&
1554 hotkey_source_mask != 0 && hotkey_poll_freq == 0) {
1555 printk(TPACPI_NOTICE
1556 "hot keys 0x%08x require polling, "
1557 "which is currently disabled\n",
1558 hotkey_source_mask);
1559 }
1560 }
1561 }
1562
1563 static void hotkey_poll_setup_safe(int may_warn)
1564 {
1565 mutex_lock(&hotkey_mutex);
1566 hotkey_poll_setup(may_warn);
1567 mutex_unlock(&hotkey_mutex);
1568 }
1569
1570 #else /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
1571
1572 static void hotkey_poll_setup_safe(int __unused)
1573 {
1574 }
1575
1576 #endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
1577
1578 static int hotkey_inputdev_open(struct input_dev *dev)
1579 {
1580 switch (tpacpi_lifecycle) {
1581 case TPACPI_LIFE_INIT:
1582 /*
1583 * hotkey_init will call hotkey_poll_setup_safe
1584 * at the appropriate moment
1585 */
1586 return 0;
1587 case TPACPI_LIFE_EXITING:
1588 return -EBUSY;
1589 case TPACPI_LIFE_RUNNING:
1590 hotkey_poll_setup_safe(0);
1591 return 0;
1592 }
1593
1594 /* Should only happen if tpacpi_lifecycle is corrupt */
1595 BUG();
1596 return -EBUSY;
1597 }
1598
1599 static void hotkey_inputdev_close(struct input_dev *dev)
1600 {
1601 /* disable hotkey polling when possible */
1602 if (tpacpi_lifecycle == TPACPI_LIFE_RUNNING)
1603 hotkey_poll_setup_safe(0);
1604 }
1605
1606 /* sysfs hotkey enable ------------------------------------------------- */
1607 static ssize_t hotkey_enable_show(struct device *dev,
1608 struct device_attribute *attr,
1609 char *buf)
1610 {
1611 int res, status;
1612
1613 res = hotkey_status_get(&status);
1614 if (res)
1615 return res;
1616
1617 return snprintf(buf, PAGE_SIZE, "%d\n", status);
1618 }
1619
1620 static ssize_t hotkey_enable_store(struct device *dev,
1621 struct device_attribute *attr,
1622 const char *buf, size_t count)
1623 {
1624 unsigned long t;
1625 int res;
1626
1627 if (parse_strtoul(buf, 1, &t))
1628 return -EINVAL;
1629
1630 res = hotkey_status_set(t);
1631
1632 return (res) ? res : count;
1633 }
1634
1635 static struct device_attribute dev_attr_hotkey_enable =
1636 __ATTR(hotkey_enable, S_IWUSR | S_IRUGO,
1637 hotkey_enable_show, hotkey_enable_store);
1638
1639 /* sysfs hotkey mask --------------------------------------------------- */
1640 static ssize_t hotkey_mask_show(struct device *dev,
1641 struct device_attribute *attr,
1642 char *buf)
1643 {
1644 int res;
1645
1646 if (mutex_lock_interruptible(&hotkey_mutex))
1647 return -ERESTARTSYS;
1648 res = hotkey_mask_get();
1649 mutex_unlock(&hotkey_mutex);
1650
1651 return (res)?
1652 res : snprintf(buf, PAGE_SIZE, "0x%08x\n", hotkey_mask);
1653 }
1654
1655 static ssize_t hotkey_mask_store(struct device *dev,
1656 struct device_attribute *attr,
1657 const char *buf, size_t count)
1658 {
1659 unsigned long t;
1660 int res;
1661
1662 if (parse_strtoul(buf, 0xffffffffUL, &t))
1663 return -EINVAL;
1664
1665 if (mutex_lock_interruptible(&hotkey_mutex))
1666 return -ERESTARTSYS;
1667
1668 res = hotkey_mask_set(t);
1669
1670 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
1671 hotkey_poll_setup(1);
1672 #endif
1673
1674 mutex_unlock(&hotkey_mutex);
1675
1676 return (res) ? res : count;
1677 }
1678
1679 static struct device_attribute dev_attr_hotkey_mask =
1680 __ATTR(hotkey_mask, S_IWUSR | S_IRUGO,
1681 hotkey_mask_show, hotkey_mask_store);
1682
1683 /* sysfs hotkey bios_enabled ------------------------------------------- */
1684 static ssize_t hotkey_bios_enabled_show(struct device *dev,
1685 struct device_attribute *attr,
1686 char *buf)
1687 {
1688 return snprintf(buf, PAGE_SIZE, "%d\n", hotkey_orig_status);
1689 }
1690
1691 static struct device_attribute dev_attr_hotkey_bios_enabled =
1692 __ATTR(hotkey_bios_enabled, S_IRUGO, hotkey_bios_enabled_show, NULL);
1693
1694 /* sysfs hotkey bios_mask ---------------------------------------------- */
1695 static ssize_t hotkey_bios_mask_show(struct device *dev,
1696 struct device_attribute *attr,
1697 char *buf)
1698 {
1699 return snprintf(buf, PAGE_SIZE, "0x%08x\n", hotkey_orig_mask);
1700 }
1701
1702 static struct device_attribute dev_attr_hotkey_bios_mask =
1703 __ATTR(hotkey_bios_mask, S_IRUGO, hotkey_bios_mask_show, NULL);
1704
1705 /* sysfs hotkey all_mask ----------------------------------------------- */
1706 static ssize_t hotkey_all_mask_show(struct device *dev,
1707 struct device_attribute *attr,
1708 char *buf)
1709 {
1710 return snprintf(buf, PAGE_SIZE, "0x%08x\n",
1711 hotkey_all_mask | hotkey_source_mask);
1712 }
1713
1714 static struct device_attribute dev_attr_hotkey_all_mask =
1715 __ATTR(hotkey_all_mask, S_IRUGO, hotkey_all_mask_show, NULL);
1716
1717 /* sysfs hotkey recommended_mask --------------------------------------- */
1718 static ssize_t hotkey_recommended_mask_show(struct device *dev,
1719 struct device_attribute *attr,
1720 char *buf)
1721 {
1722 return snprintf(buf, PAGE_SIZE, "0x%08x\n",
1723 (hotkey_all_mask | hotkey_source_mask)
1724 & ~hotkey_reserved_mask);
1725 }
1726
1727 static struct device_attribute dev_attr_hotkey_recommended_mask =
1728 __ATTR(hotkey_recommended_mask, S_IRUGO,
1729 hotkey_recommended_mask_show, NULL);
1730
1731 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
1732
1733 /* sysfs hotkey hotkey_source_mask ------------------------------------- */
1734 static ssize_t hotkey_source_mask_show(struct device *dev,
1735 struct device_attribute *attr,
1736 char *buf)
1737 {
1738 return snprintf(buf, PAGE_SIZE, "0x%08x\n", hotkey_source_mask);
1739 }
1740
1741 static ssize_t hotkey_source_mask_store(struct device *dev,
1742 struct device_attribute *attr,
1743 const char *buf, size_t count)
1744 {
1745 unsigned long t;
1746
1747 if (parse_strtoul(buf, 0xffffffffUL, &t) ||
1748 ((t & ~TPACPI_HKEY_NVRAM_KNOWN_MASK) != 0))
1749 return -EINVAL;
1750
1751 if (mutex_lock_interruptible(&hotkey_mutex))
1752 return -ERESTARTSYS;
1753
1754 HOTKEY_CONFIG_CRITICAL_START
1755 hotkey_source_mask = t;
1756 HOTKEY_CONFIG_CRITICAL_END
1757
1758 hotkey_poll_setup(1);
1759
1760 mutex_unlock(&hotkey_mutex);
1761
1762 return count;
1763 }
1764
1765 static struct device_attribute dev_attr_hotkey_source_mask =
1766 __ATTR(hotkey_source_mask, S_IWUSR | S_IRUGO,
1767 hotkey_source_mask_show, hotkey_source_mask_store);
1768
1769 /* sysfs hotkey hotkey_poll_freq --------------------------------------- */
1770 static ssize_t hotkey_poll_freq_show(struct device *dev,
1771 struct device_attribute *attr,
1772 char *buf)
1773 {
1774 return snprintf(buf, PAGE_SIZE, "%d\n", hotkey_poll_freq);
1775 }
1776
1777 static ssize_t hotkey_poll_freq_store(struct device *dev,
1778 struct device_attribute *attr,
1779 const char *buf, size_t count)
1780 {
1781 unsigned long t;
1782
1783 if (parse_strtoul(buf, 25, &t))
1784 return -EINVAL;
1785
1786 if (mutex_lock_interruptible(&hotkey_mutex))
1787 return -ERESTARTSYS;
1788
1789 hotkey_poll_freq = t;
1790
1791 hotkey_poll_setup(1);
1792 mutex_unlock(&hotkey_mutex);
1793
1794 return count;
1795 }
1796
1797 static struct device_attribute dev_attr_hotkey_poll_freq =
1798 __ATTR(hotkey_poll_freq, S_IWUSR | S_IRUGO,
1799 hotkey_poll_freq_show, hotkey_poll_freq_store);
1800
1801 #endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
1802
1803 /* sysfs hotkey radio_sw (pollable) ------------------------------------ */
1804 static ssize_t hotkey_radio_sw_show(struct device *dev,
1805 struct device_attribute *attr,
1806 char *buf)
1807 {
1808 int res, s;
1809 res = hotkey_get_wlsw(&s);
1810 if (res < 0)
1811 return res;
1812
1813 return snprintf(buf, PAGE_SIZE, "%d\n", !!s);
1814 }
1815
1816 static struct device_attribute dev_attr_hotkey_radio_sw =
1817 __ATTR(hotkey_radio_sw, S_IRUGO, hotkey_radio_sw_show, NULL);
1818
1819 static void hotkey_radio_sw_notify_change(void)
1820 {
1821 if (tp_features.hotkey_wlsw)
1822 sysfs_notify(&tpacpi_pdev->dev.kobj, NULL,
1823 "hotkey_radio_sw");
1824 }
1825
1826 /* sysfs hotkey tablet mode (pollable) --------------------------------- */
1827 static ssize_t hotkey_tablet_mode_show(struct device *dev,
1828 struct device_attribute *attr,
1829 char *buf)
1830 {
1831 int res, s;
1832 res = hotkey_get_tablet_mode(&s);
1833 if (res < 0)
1834 return res;
1835
1836 return snprintf(buf, PAGE_SIZE, "%d\n", !!s);
1837 }
1838
1839 static struct device_attribute dev_attr_hotkey_tablet_mode =
1840 __ATTR(hotkey_tablet_mode, S_IRUGO, hotkey_tablet_mode_show, NULL);
1841
1842 static void hotkey_tablet_mode_notify_change(void)
1843 {
1844 if (tp_features.hotkey_tablet)
1845 sysfs_notify(&tpacpi_pdev->dev.kobj, NULL,
1846 "hotkey_tablet_mode");
1847 }
1848
1849 /* sysfs hotkey report_mode -------------------------------------------- */
1850 static ssize_t hotkey_report_mode_show(struct device *dev,
1851 struct device_attribute *attr,
1852 char *buf)
1853 {
1854 return snprintf(buf, PAGE_SIZE, "%d\n",
1855 (hotkey_report_mode != 0) ? hotkey_report_mode : 1);
1856 }
1857
1858 static struct device_attribute dev_attr_hotkey_report_mode =
1859 __ATTR(hotkey_report_mode, S_IRUGO, hotkey_report_mode_show, NULL);
1860
1861 /* sysfs wakeup reason (pollable) -------------------------------------- */
1862 static ssize_t hotkey_wakeup_reason_show(struct device *dev,
1863 struct device_attribute *attr,
1864 char *buf)
1865 {
1866 return snprintf(buf, PAGE_SIZE, "%d\n", hotkey_wakeup_reason);
1867 }
1868
1869 static struct device_attribute dev_attr_hotkey_wakeup_reason =
1870 __ATTR(wakeup_reason, S_IRUGO, hotkey_wakeup_reason_show, NULL);
1871
1872 static void hotkey_wakeup_reason_notify_change(void)
1873 {
1874 if (tp_features.hotkey_mask)
1875 sysfs_notify(&tpacpi_pdev->dev.kobj, NULL,
1876 "wakeup_reason");
1877 }
1878
1879 /* sysfs wakeup hotunplug_complete (pollable) -------------------------- */
1880 static ssize_t hotkey_wakeup_hotunplug_complete_show(struct device *dev,
1881 struct device_attribute *attr,
1882 char *buf)
1883 {
1884 return snprintf(buf, PAGE_SIZE, "%d\n", hotkey_autosleep_ack);
1885 }
1886
1887 static struct device_attribute dev_attr_hotkey_wakeup_hotunplug_complete =
1888 __ATTR(wakeup_hotunplug_complete, S_IRUGO,
1889 hotkey_wakeup_hotunplug_complete_show, NULL);
1890
1891 static void hotkey_wakeup_hotunplug_complete_notify_change(void)
1892 {
1893 if (tp_features.hotkey_mask)
1894 sysfs_notify(&tpacpi_pdev->dev.kobj, NULL,
1895 "wakeup_hotunplug_complete");
1896 }
1897
1898 /* --------------------------------------------------------------------- */
1899
1900 static struct attribute *hotkey_attributes[] __initdata = {
1901 &dev_attr_hotkey_enable.attr,
1902 &dev_attr_hotkey_bios_enabled.attr,
1903 &dev_attr_hotkey_report_mode.attr,
1904 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
1905 &dev_attr_hotkey_mask.attr,
1906 &dev_attr_hotkey_all_mask.attr,
1907 &dev_attr_hotkey_recommended_mask.attr,
1908 &dev_attr_hotkey_source_mask.attr,
1909 &dev_attr_hotkey_poll_freq.attr,
1910 #endif
1911 };
1912
1913 static struct attribute *hotkey_mask_attributes[] __initdata = {
1914 &dev_attr_hotkey_bios_mask.attr,
1915 #ifndef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
1916 &dev_attr_hotkey_mask.attr,
1917 &dev_attr_hotkey_all_mask.attr,
1918 &dev_attr_hotkey_recommended_mask.attr,
1919 #endif
1920 &dev_attr_hotkey_wakeup_reason.attr,
1921 &dev_attr_hotkey_wakeup_hotunplug_complete.attr,
1922 };
1923
1924 static void hotkey_exit(void)
1925 {
1926 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
1927 hotkey_poll_stop_sync();
1928 #endif
1929
1930 if (hotkey_dev_attributes)
1931 delete_attr_set(hotkey_dev_attributes, &tpacpi_pdev->dev.kobj);
1932
1933 kfree(hotkey_keycode_map);
1934
1935 if (tp_features.hotkey) {
1936 dbg_printk(TPACPI_DBG_EXIT,
1937 "restoring original hot key mask\n");
1938 /* no short-circuit boolean operator below! */
1939 if ((hotkey_mask_set(hotkey_orig_mask) |
1940 hotkey_status_set(hotkey_orig_status)) != 0)
1941 printk(TPACPI_ERR
1942 "failed to restore hot key mask "
1943 "to BIOS defaults\n");
1944 }
1945 }
1946
1947 static int __init hotkey_init(struct ibm_init_struct *iibm)
1948 {
1949 /* Requirements for changing the default keymaps:
1950 *
1951 * 1. Many of the keys are mapped to KEY_RESERVED for very
1952 * good reasons. Do not change them unless you have deep
1953 * knowledge on the IBM and Lenovo ThinkPad firmware for
1954 * the various ThinkPad models. The driver behaves
1955 * differently for KEY_RESERVED: such keys have their
1956 * hot key mask *unset* in mask_recommended, and also
1957 * in the initial hot key mask programmed into the
1958 * firmware at driver load time, which means the firm-
1959 * ware may react very differently if you change them to
1960 * something else;
1961 *
1962 * 2. You must be subscribed to the linux-thinkpad and
1963 * ibm-acpi-devel mailing lists, and you should read the
1964 * list archives since 2007 if you want to change the
1965 * keymaps. This requirement exists so that you will
1966 * know the past history of problems with the thinkpad-
1967 * acpi driver keymaps, and also that you will be
1968 * listening to any bug reports;
1969 *
1970 * 3. Do not send thinkpad-acpi specific patches directly to
1971 * for merging, *ever*. Send them to the linux-acpi
1972 * mailinglist for comments. Merging is to be done only
1973 * through acpi-test and the ACPI maintainer.
1974 *
1975 * If the above is too much to ask, don't change the keymap.
1976 * Ask the thinkpad-acpi maintainer to do it, instead.
1977 */
1978 static u16 ibm_keycode_map[] __initdata = {
1979 /* Scan Codes 0x00 to 0x0B: ACPI HKEY FN+F1..F12 */
1980 KEY_FN_F1, KEY_FN_F2, KEY_COFFEE, KEY_SLEEP,
1981 KEY_WLAN, KEY_FN_F6, KEY_SWITCHVIDEOMODE, KEY_FN_F8,
1982 KEY_FN_F9, KEY_FN_F10, KEY_FN_F11, KEY_SUSPEND,
1983
1984 /* Scan codes 0x0C to 0x1F: Other ACPI HKEY hot keys */
1985 KEY_UNKNOWN, /* 0x0C: FN+BACKSPACE */
1986 KEY_UNKNOWN, /* 0x0D: FN+INSERT */
1987 KEY_UNKNOWN, /* 0x0E: FN+DELETE */
1988
1989 /* brightness: firmware always reacts to them, unless
1990 * X.org did some tricks in the radeon BIOS scratch
1991 * registers of *some* models */
1992 KEY_RESERVED, /* 0x0F: FN+HOME (brightness up) */
1993 KEY_RESERVED, /* 0x10: FN+END (brightness down) */
1994
1995 /* Thinklight: firmware always react to it */
1996 KEY_RESERVED, /* 0x11: FN+PGUP (thinklight toggle) */
1997
1998 KEY_UNKNOWN, /* 0x12: FN+PGDOWN */
1999 KEY_ZOOM, /* 0x13: FN+SPACE (zoom) */
2000
2001 /* Volume: firmware always react to it and reprograms
2002 * the built-in *extra* mixer. Never map it to control
2003 * another mixer by default. */
2004 KEY_RESERVED, /* 0x14: VOLUME UP */
2005 KEY_RESERVED, /* 0x15: VOLUME DOWN */
2006 KEY_RESERVED, /* 0x16: MUTE */
2007
2008 KEY_VENDOR, /* 0x17: Thinkpad/AccessIBM/Lenovo */
2009
2010 /* (assignments unknown, please report if found) */
2011 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN,
2012 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN,
2013 };
2014 static u16 lenovo_keycode_map[] __initdata = {
2015 /* Scan Codes 0x00 to 0x0B: ACPI HKEY FN+F1..F12 */
2016 KEY_FN_F1, KEY_COFFEE, KEY_BATTERY, KEY_SLEEP,
2017 KEY_WLAN, KEY_FN_F6, KEY_SWITCHVIDEOMODE, KEY_FN_F8,
2018 KEY_FN_F9, KEY_FN_F10, KEY_FN_F11, KEY_SUSPEND,
2019
2020 /* Scan codes 0x0C to 0x1F: Other ACPI HKEY hot keys */
2021 KEY_UNKNOWN, /* 0x0C: FN+BACKSPACE */
2022 KEY_UNKNOWN, /* 0x0D: FN+INSERT */
2023 KEY_UNKNOWN, /* 0x0E: FN+DELETE */
2024
2025 /* These either have to go through ACPI video, or
2026 * act like in the IBM ThinkPads, so don't ever
2027 * enable them by default */
2028 KEY_RESERVED, /* 0x0F: FN+HOME (brightness up) */
2029 KEY_RESERVED, /* 0x10: FN+END (brightness down) */
2030
2031 KEY_RESERVED, /* 0x11: FN+PGUP (thinklight toggle) */
2032
2033 KEY_UNKNOWN, /* 0x12: FN+PGDOWN */
2034 KEY_ZOOM, /* 0x13: FN+SPACE (zoom) */
2035
2036 /* Volume: z60/z61, T60 (BIOS version?): firmware always
2037 * react to it and reprograms the built-in *extra* mixer.
2038 * Never map it to control another mixer by default.
2039 *
2040 * T60?, T61, R60?, R61: firmware and EC tries to send
2041 * these over the regular keyboard, so these are no-ops,
2042 * but there are still weird bugs re. MUTE, so do not
2043 * change unless you get test reports from all Lenovo
2044 * models. May cause the BIOS to interfere with the
2045 * HDA mixer.
2046 */
2047 KEY_RESERVED, /* 0x14: VOLUME UP */
2048 KEY_RESERVED, /* 0x15: VOLUME DOWN */
2049 KEY_RESERVED, /* 0x16: MUTE */
2050
2051 KEY_VENDOR, /* 0x17: Thinkpad/AccessIBM/Lenovo */
2052
2053 /* (assignments unknown, please report if found) */
2054 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN,
2055 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN,
2056 };
2057
2058 #define TPACPI_HOTKEY_MAP_LEN ARRAY_SIZE(ibm_keycode_map)
2059 #define TPACPI_HOTKEY_MAP_SIZE sizeof(ibm_keycode_map)
2060 #define TPACPI_HOTKEY_MAP_TYPESIZE sizeof(ibm_keycode_map[0])
2061
2062 int res, i;
2063 int status;
2064 int hkeyv;
2065
2066 vdbg_printk(TPACPI_DBG_INIT, "initializing hotkey subdriver\n");
2067
2068 BUG_ON(!tpacpi_inputdev);
2069 BUG_ON(tpacpi_inputdev->open != NULL ||
2070 tpacpi_inputdev->close != NULL);
2071
2072 TPACPI_ACPIHANDLE_INIT(hkey);
2073 mutex_init(&hotkey_mutex);
2074
2075 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
2076 mutex_init(&hotkey_thread_mutex);
2077 mutex_init(&hotkey_thread_data_mutex);
2078 #endif
2079
2080 /* hotkey not supported on 570 */
2081 tp_features.hotkey = hkey_handle != NULL;
2082
2083 vdbg_printk(TPACPI_DBG_INIT, "hotkeys are %s\n",
2084 str_supported(tp_features.hotkey));
2085
2086 if (!tp_features.hotkey)
2087 return 1;
2088
2089 hotkey_dev_attributes = create_attr_set(13, NULL);
2090 if (!hotkey_dev_attributes)
2091 return -ENOMEM;
2092 res = add_many_to_attr_set(hotkey_dev_attributes,
2093 hotkey_attributes,
2094 ARRAY_SIZE(hotkey_attributes));
2095 if (res)
2096 goto err_exit;
2097
2098 /* mask not supported on 570, 600e/x, 770e, 770x, A21e, A2xm/p,
2099 A30, R30, R31, T20-22, X20-21, X22-24. Detected by checking
2100 for HKEY interface version 0x100 */
2101 if (acpi_evalf(hkey_handle, &hkeyv, "MHKV", "qd")) {
2102 if ((hkeyv >> 8) != 1) {
2103 printk(TPACPI_ERR "unknown version of the "
2104 "HKEY interface: 0x%x\n", hkeyv);
2105 printk(TPACPI_ERR "please report this to %s\n",
2106 TPACPI_MAIL);
2107 } else {
2108 /*
2109 * MHKV 0x100 in A31, R40, R40e,
2110 * T4x, X31, and later
2111 */
2112 tp_features.hotkey_mask = 1;
2113 }
2114 }
2115
2116 vdbg_printk(TPACPI_DBG_INIT, "hotkey masks are %s\n",
2117 str_supported(tp_features.hotkey_mask));
2118
2119 if (tp_features.hotkey_mask) {
2120 if (!acpi_evalf(hkey_handle, &hotkey_all_mask,
2121 "MHKA", "qd")) {
2122 printk(TPACPI_ERR
2123 "missing MHKA handler, "
2124 "please report this to %s\n",
2125 TPACPI_MAIL);
2126 /* FN+F12, FN+F4, FN+F3 */
2127 hotkey_all_mask = 0x080cU;
2128 }
2129 }
2130
2131 /* hotkey_source_mask *must* be zero for
2132 * the first hotkey_mask_get */
2133 res = hotkey_status_get(&hotkey_orig_status);
2134 if (res)
2135 goto err_exit;
2136
2137 if (tp_features.hotkey_mask) {
2138 res = hotkey_mask_get();
2139 if (res)
2140 goto err_exit;
2141
2142 hotkey_orig_mask = hotkey_mask;
2143 res = add_many_to_attr_set(
2144 hotkey_dev_attributes,
2145 hotkey_mask_attributes,
2146 ARRAY_SIZE(hotkey_mask_attributes));
2147 if (res)
2148 goto err_exit;
2149 }
2150
2151 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
2152 if (tp_features.hotkey_mask) {
2153 hotkey_source_mask = TPACPI_HKEY_NVRAM_GOOD_MASK
2154 & ~hotkey_all_mask;
2155 } else {
2156 hotkey_source_mask = TPACPI_HKEY_NVRAM_GOOD_MASK;
2157 }
2158
2159 vdbg_printk(TPACPI_DBG_INIT,
2160 "hotkey source mask 0x%08x, polling freq %d\n",
2161 hotkey_source_mask, hotkey_poll_freq);
2162 #endif
2163
2164 /* Not all thinkpads have a hardware radio switch */
2165 if (acpi_evalf(hkey_handle, &status, "WLSW", "qd")) {
2166 tp_features.hotkey_wlsw = 1;
2167 printk(TPACPI_INFO
2168 "radio switch found; radios are %s\n",
2169 enabled(status, 0));
2170 res = add_to_attr_set(hotkey_dev_attributes,
2171 &dev_attr_hotkey_radio_sw.attr);
2172 }
2173
2174 /* For X41t, X60t, X61t Tablets... */
2175 if (!res && acpi_evalf(hkey_handle, &status, "MHKG", "qd")) {
2176 tp_features.hotkey_tablet = 1;
2177 printk(TPACPI_INFO
2178 "possible tablet mode switch found; "
2179 "ThinkPad in %s mode\n",
2180 (status & TP_HOTKEY_TABLET_MASK)?
2181 "tablet" : "laptop");
2182 res = add_to_attr_set(hotkey_dev_attributes,
2183 &dev_attr_hotkey_tablet_mode.attr);
2184 }
2185
2186 if (!res)
2187 res = register_attr_set_with_sysfs(
2188 hotkey_dev_attributes,
2189 &tpacpi_pdev->dev.kobj);
2190 if (res)
2191 goto err_exit;
2192
2193 /* Set up key map */
2194
2195 hotkey_keycode_map = kmalloc(TPACPI_HOTKEY_MAP_SIZE,
2196 GFP_KERNEL);
2197 if (!hotkey_keycode_map) {
2198 printk(TPACPI_ERR
2199 "failed to allocate memory for key map\n");
2200 res = -ENOMEM;
2201 goto err_exit;
2202 }
2203
2204 if (thinkpad_id.vendor == PCI_VENDOR_ID_LENOVO) {
2205 dbg_printk(TPACPI_DBG_INIT,
2206 "using Lenovo default hot key map\n");
2207 memcpy(hotkey_keycode_map, &lenovo_keycode_map,
2208 TPACPI_HOTKEY_MAP_SIZE);
2209 } else {
2210 dbg_printk(TPACPI_DBG_INIT,
2211 "using IBM default hot key map\n");
2212 memcpy(hotkey_keycode_map, &ibm_keycode_map,
2213 TPACPI_HOTKEY_MAP_SIZE);
2214 }
2215
2216 set_bit(EV_KEY, tpacpi_inputdev->evbit);
2217 set_bit(EV_MSC, tpacpi_inputdev->evbit);
2218 set_bit(MSC_SCAN, tpacpi_inputdev->mscbit);
2219 tpacpi_inputdev->keycodesize = TPACPI_HOTKEY_MAP_TYPESIZE;
2220 tpacpi_inputdev->keycodemax = TPACPI_HOTKEY_MAP_LEN;
2221 tpacpi_inputdev->keycode = hotkey_keycode_map;
2222 for (i = 0; i < TPACPI_HOTKEY_MAP_LEN; i++) {
2223 if (hotkey_keycode_map[i] != KEY_RESERVED) {
2224 set_bit(hotkey_keycode_map[i],
2225 tpacpi_inputdev->keybit);
2226 } else {
2227 if (i < sizeof(hotkey_reserved_mask)*8)
2228 hotkey_reserved_mask |= 1 << i;
2229 }
2230 }
2231
2232 if (tp_features.hotkey_wlsw) {
2233 set_bit(EV_SW, tpacpi_inputdev->evbit);
2234 set_bit(SW_RFKILL_ALL, tpacpi_inputdev->swbit);
2235 }
2236 if (tp_features.hotkey_tablet) {
2237 set_bit(EV_SW, tpacpi_inputdev->evbit);
2238 set_bit(SW_TABLET_MODE, tpacpi_inputdev->swbit);
2239 }
2240
2241 /* Do not issue duplicate brightness change events to
2242 * userspace */
2243 if (!tp_features.bright_acpimode)
2244 /* update bright_acpimode... */
2245 tpacpi_check_std_acpi_brightness_support();
2246
2247 if (tp_features.bright_acpimode) {
2248 printk(TPACPI_INFO
2249 "This ThinkPad has standard ACPI backlight "
2250 "brightness control, supported by the ACPI "
2251 "video driver\n");
2252 printk(TPACPI_NOTICE
2253 "Disabling thinkpad-acpi brightness events "
2254 "by default...\n");
2255
2256 /* The hotkey_reserved_mask change below is not
2257 * necessary while the keys are at KEY_RESERVED in the
2258 * default map, but better safe than sorry, leave it
2259 * here as a marker of what we have to do, especially
2260 * when we finally become able to set this at runtime
2261 * on response to X.org requests */
2262 hotkey_reserved_mask |=
2263 (1 << TP_ACPI_HOTKEYSCAN_FNHOME)
2264 | (1 << TP_ACPI_HOTKEYSCAN_FNEND);
2265 }
2266
2267 dbg_printk(TPACPI_DBG_INIT, "enabling hot key handling\n");
2268 res = hotkey_status_set(1);
2269 if (res) {
2270 hotkey_exit();
2271 return res;
2272 }
2273 res = hotkey_mask_set(((hotkey_all_mask | hotkey_source_mask)
2274 & ~hotkey_reserved_mask)
2275 | hotkey_orig_mask);
2276 if (res < 0 && res != -ENXIO) {
2277 hotkey_exit();
2278 return res;
2279 }
2280
2281 dbg_printk(TPACPI_DBG_INIT,
2282 "legacy hot key reporting over procfs %s\n",
2283 (hotkey_report_mode < 2) ?
2284 "enabled" : "disabled");
2285
2286 tpacpi_inputdev->open = &hotkey_inputdev_open;
2287 tpacpi_inputdev->close = &hotkey_inputdev_close;
2288
2289 hotkey_poll_setup_safe(1);
2290 tpacpi_input_send_radiosw();
2291 tpacpi_input_send_tabletsw();
2292
2293 return 0;
2294
2295 err_exit:
2296 delete_attr_set(hotkey_dev_attributes, &tpacpi_pdev->dev.kobj);
2297 hotkey_dev_attributes = NULL;
2298
2299 return (res < 0)? res : 1;
2300 }
2301
2302 static void hotkey_notify(struct ibm_struct *ibm, u32 event)
2303 {
2304 u32 hkey;
2305 unsigned int scancode;
2306 int send_acpi_ev;
2307 int ignore_acpi_ev;
2308 int unk_ev;
2309
2310 if (event != 0x80) {
2311 printk(TPACPI_ERR
2312 "unknown HKEY notification event %d\n", event);
2313 /* forward it to userspace, maybe it knows how to handle it */
2314 acpi_bus_generate_netlink_event(
2315 ibm->acpi->device->pnp.device_class,
2316 ibm->acpi->device->dev.bus_id,
2317 event, 0);
2318 return;
2319 }
2320
2321 while (1) {
2322 if (!acpi_evalf(hkey_handle, &hkey, "MHKP", "d")) {
2323 printk(TPACPI_ERR "failed to retrieve HKEY event\n");
2324 return;
2325 }
2326
2327 if (hkey == 0) {
2328 /* queue empty */
2329 return;
2330 }
2331
2332 send_acpi_ev = 1;
2333 ignore_acpi_ev = 0;
2334 unk_ev = 0;
2335
2336 switch (hkey >> 12) {
2337 case 1:
2338 /* 0x1000-0x1FFF: key presses */
2339 scancode = hkey & 0xfff;
2340 if (scancode > 0 && scancode < 0x21) {
2341 scancode--;
2342 if (!(hotkey_source_mask & (1 << scancode))) {
2343 tpacpi_input_send_key(scancode);
2344 send_acpi_ev = 0;
2345 } else {
2346 ignore_acpi_ev = 1;
2347 }
2348 } else {
2349 unk_ev = 1;
2350 }
2351 break;
2352 case 2:
2353 /* Wakeup reason */
2354 switch (hkey) {
2355 case 0x2304: /* suspend, undock */
2356 case 0x2404: /* hibernation, undock */
2357 hotkey_wakeup_reason = TP_ACPI_WAKEUP_UNDOCK;
2358 ignore_acpi_ev = 1;
2359 break;
2360 case 0x2305: /* suspend, bay eject */
2361 case 0x2405: /* hibernation, bay eject */
2362 hotkey_wakeup_reason = TP_ACPI_WAKEUP_BAYEJ;
2363 ignore_acpi_ev = 1;
2364 break;
2365 default:
2366 unk_ev = 1;
2367 }
2368 if (hotkey_wakeup_reason != TP_ACPI_WAKEUP_NONE) {
2369 printk(TPACPI_INFO
2370 "woke up due to a hot-unplug "
2371 "request...\n");
2372 hotkey_wakeup_reason_notify_change();
2373 }
2374 break;
2375 case 3:
2376 /* bay-related wakeups */
2377 if (hkey == 0x3003) {
2378 hotkey_autosleep_ack = 1;
2379 printk(TPACPI_INFO
2380 "bay ejected\n");
2381 hotkey_wakeup_hotunplug_complete_notify_change();
2382 } else {
2383 unk_ev = 1;
2384 }
2385 break;
2386 case 4:
2387 /* dock-related wakeups */
2388 if (hkey == 0x4003) {
2389 hotkey_autosleep_ack = 1;
2390 printk(TPACPI_INFO
2391 "undocked\n");
2392 hotkey_wakeup_hotunplug_complete_notify_change();
2393 } else {
2394 unk_ev = 1;
2395 }
2396 break;
2397 case 5:
2398 /* 0x5000-0x5FFF: human interface helpers */
2399 switch (hkey) {
2400 case 0x5010: /* Lenovo new BIOS: brightness changed */
2401 case 0x500b: /* X61t: tablet pen inserted into bay */
2402 case 0x500c: /* X61t: tablet pen removed from bay */
2403 break;
2404 case 0x5009: /* X41t-X61t: swivel up (tablet mode) */
2405 case 0x500a: /* X41t-X61t: swivel down (normal mode) */
2406 tpacpi_input_send_tabletsw();
2407 hotkey_tablet_mode_notify_change();
2408 send_acpi_ev = 0;
2409 break;
2410 case 0x5001:
2411 case 0x5002:
2412 /* LID switch events. Do not propagate */
2413 ignore_acpi_ev = 1;
2414 break;
2415 default:
2416 unk_ev = 1;
2417 }
2418 break;
2419 case 7:
2420 /* 0x7000-0x7FFF: misc */
2421 if (tp_features.hotkey_wlsw && hkey == 0x7000) {
2422 tpacpi_input_send_radiosw();
2423 hotkey_radio_sw_notify_change();
2424 send_acpi_ev = 0;
2425 break;
2426 }
2427 /* fallthrough to default */
2428 default:
2429 unk_ev = 1;
2430 }
2431 if (unk_ev) {
2432 printk(TPACPI_NOTICE
2433 "unhandled HKEY event 0x%04x\n", hkey);
2434 }
2435
2436 /* Legacy events */
2437 if (!ignore_acpi_ev &&
2438 (send_acpi_ev || hotkey_report_mode < 2)) {
2439 acpi_bus_generate_proc_event(ibm->acpi->device,
2440 event, hkey);
2441 }
2442
2443 /* netlink events */
2444 if (!ignore_acpi_ev && send_acpi_ev) {
2445 acpi_bus_generate_netlink_event(
2446 ibm->acpi->device->pnp.device_class,
2447 ibm->acpi->device->dev.bus_id,
2448 event, hkey);
2449 }
2450 }
2451 }
2452
2453 static void hotkey_suspend(pm_message_t state)
2454 {
2455 /* Do these on suspend, we get the events on early resume! */
2456 hotkey_wakeup_reason = TP_ACPI_WAKEUP_NONE;
2457 hotkey_autosleep_ack = 0;
2458 }
2459
2460 static void hotkey_resume(void)
2461 {
2462 if (hotkey_mask_get())
2463 printk(TPACPI_ERR
2464 "error while trying to read hot key mask "
2465 "from firmware\n");
2466 tpacpi_input_send_radiosw();
2467 hotkey_radio_sw_notify_change();
2468 hotkey_tablet_mode_notify_change();
2469 hotkey_wakeup_reason_notify_change();
2470 hotkey_wakeup_hotunplug_complete_notify_change();
2471 hotkey_poll_setup_safe(0);
2472 }
2473
2474 /* procfs -------------------------------------------------------------- */
2475 static int hotkey_read(char *p)
2476 {
2477 int res, status;
2478 int len = 0;
2479
2480 if (!tp_features.hotkey) {
2481 len += sprintf(p + len, "status:\t\tnot supported\n");
2482 return len;
2483 }
2484
2485 if (mutex_lock_interruptible(&hotkey_mutex))
2486 return -ERESTARTSYS;
2487 res = hotkey_status_get(&status);
2488 if (!res)
2489 res = hotkey_mask_get();
2490 mutex_unlock(&hotkey_mutex);
2491 if (res)
2492 return res;
2493
2494 len += sprintf(p + len, "status:\t\t%s\n", enabled(status, 0));
2495 if (tp_features.hotkey_mask) {
2496 len += sprintf(p + len, "mask:\t\t0x%08x\n", hotkey_mask);
2497 len += sprintf(p + len,
2498 "commands:\tenable, disable, reset, <mask>\n");
2499 } else {
2500 len += sprintf(p + len, "mask:\t\tnot supported\n");
2501 len += sprintf(p + len, "commands:\tenable, disable, reset\n");
2502 }
2503
2504 return len;
2505 }
2506
2507 static int hotkey_write(char *buf)
2508 {
2509 int res, status;
2510 u32 mask;
2511 char *cmd;
2512
2513 if (!tp_features.hotkey)
2514 return -ENODEV;
2515
2516 if (mutex_lock_interruptible(&hotkey_mutex))
2517 return -ERESTARTSYS;
2518
2519 status = -1;
2520 mask = hotkey_mask;
2521
2522 res = 0;
2523 while ((cmd = next_cmd(&buf))) {
2524 if (strlencmp(cmd, "enable") == 0) {
2525 status = 1;
2526 } else if (strlencmp(cmd, "disable") == 0) {
2527 status = 0;
2528 } else if (strlencmp(cmd, "reset") == 0) {
2529 status = hotkey_orig_status;
2530 mask = hotkey_orig_mask;
2531 } else if (sscanf(cmd, "0x%x", &mask) == 1) {
2532 /* mask set */
2533 } else if (sscanf(cmd, "%x", &mask) == 1) {
2534 /* mask set */
2535 } else {
2536 res = -EINVAL;
2537 goto errexit;
2538 }
2539 }
2540 if (status != -1)
2541 res = hotkey_status_set(status);
2542
2543 if (!res && mask != hotkey_mask)
2544 res = hotkey_mask_set(mask);
2545
2546 errexit:
2547 mutex_unlock(&hotkey_mutex);
2548 return res;
2549 }
2550
2551 static const struct acpi_device_id ibm_htk_device_ids[] = {
2552 {TPACPI_ACPI_HKEY_HID, 0},
2553 {"", 0},
2554 };
2555
2556 static struct tp_acpi_drv_struct ibm_hotkey_acpidriver = {
2557 .hid = ibm_htk_device_ids,
2558 .notify = hotkey_notify,
2559 .handle = &hkey_handle,
2560 .type = ACPI_DEVICE_NOTIFY,
2561 };
2562
2563 static struct ibm_struct hotkey_driver_data = {
2564 .name = "hotkey",
2565 .read = hotkey_read,
2566 .write = hotkey_write,
2567 .exit = hotkey_exit,
2568 .resume = hotkey_resume,
2569 .suspend = hotkey_suspend,
2570 .acpi = &ibm_hotkey_acpidriver,
2571 };
2572
2573 /*************************************************************************
2574 * Bluetooth subdriver
2575 */
2576
2577 enum {
2578 /* ACPI GBDC/SBDC bits */
2579 TP_ACPI_BLUETOOTH_HWPRESENT = 0x01, /* Bluetooth hw available */
2580 TP_ACPI_BLUETOOTH_RADIOSSW = 0x02, /* Bluetooth radio enabled */
2581 TP_ACPI_BLUETOOTH_UNK = 0x04, /* unknown function */
2582 };
2583
2584 static int bluetooth_get_radiosw(void);
2585 static int bluetooth_set_radiosw(int radio_on);
2586
2587 /* sysfs bluetooth enable ---------------------------------------------- */
2588 static ssize_t bluetooth_enable_show(struct device *dev,
2589 struct device_attribute *attr,
2590 char *buf)
2591 {
2592 int status;
2593
2594 status = bluetooth_get_radiosw();
2595 if (status < 0)
2596 return status;
2597
2598 return snprintf(buf, PAGE_SIZE, "%d\n", status ? 1 : 0);
2599 }
2600
2601 static ssize_t bluetooth_enable_store(struct device *dev,
2602 struct device_attribute *attr,
2603 const char *buf, size_t count)
2604 {
2605 unsigned long t;
2606 int res;
2607
2608 if (parse_strtoul(buf, 1, &t))
2609 return -EINVAL;
2610
2611 res = bluetooth_set_radiosw(t);
2612
2613 return (res) ? res : count;
2614 }
2615
2616 static struct device_attribute dev_attr_bluetooth_enable =
2617 __ATTR(bluetooth_enable, S_IWUSR | S_IRUGO,
2618 bluetooth_enable_show, bluetooth_enable_store);
2619
2620 /* --------------------------------------------------------------------- */
2621
2622 static struct attribute *bluetooth_attributes[] = {
2623 &dev_attr_bluetooth_enable.attr,
2624 NULL
2625 };
2626
2627 static const struct attribute_group bluetooth_attr_group = {
2628 .attrs = bluetooth_attributes,
2629 };
2630
2631 static int __init bluetooth_init(struct ibm_init_struct *iibm)
2632 {
2633 int res;
2634 int status = 0;
2635
2636 vdbg_printk(TPACPI_DBG_INIT, "initializing bluetooth subdriver\n");
2637
2638 TPACPI_ACPIHANDLE_INIT(hkey);
2639
2640 /* bluetooth not supported on 570, 600e/x, 770e, 770x, A21e, A2xm/p,
2641 G4x, R30, R31, R40e, R50e, T20-22, X20-21 */
2642 tp_features.bluetooth = hkey_handle &&
2643 acpi_evalf(hkey_handle, &status, "GBDC", "qd");
2644
2645 vdbg_printk(TPACPI_DBG_INIT, "bluetooth is %s, status 0x%02x\n",
2646 str_supported(tp_features.bluetooth),
2647 status);
2648
2649 if (tp_features.bluetooth) {
2650 if (!(status & TP_ACPI_BLUETOOTH_HWPRESENT)) {
2651 /* no bluetooth hardware present in system */
2652 tp_features.bluetooth = 0;
2653 dbg_printk(TPACPI_DBG_INIT,
2654 "bluetooth hardware not installed\n");
2655 } else {
2656 res = sysfs_create_group(&tpacpi_pdev->dev.kobj,
2657 &bluetooth_attr_group);
2658 if (res)
2659 return res;
2660 }
2661 }
2662
2663 return (tp_features.bluetooth)? 0 : 1;
2664 }
2665
2666 static void bluetooth_exit(void)
2667 {
2668 sysfs_remove_group(&tpacpi_pdev->dev.kobj,
2669 &bluetooth_attr_group);
2670 }
2671
2672 static int bluetooth_get_radiosw(void)
2673 {
2674 int status;
2675
2676 if (!tp_features.bluetooth)
2677 return -ENODEV;
2678
2679 if (!acpi_evalf(hkey_handle, &status, "GBDC", "d"))
2680 return -EIO;
2681
2682 return ((status & TP_ACPI_BLUETOOTH_RADIOSSW) != 0);
2683 }
2684
2685 static int bluetooth_set_radiosw(int radio_on)
2686 {
2687 int status;
2688
2689 if (!tp_features.bluetooth)
2690 return -ENODEV;
2691
2692 if (!acpi_evalf(hkey_handle, &status, "GBDC", "d"))
2693 return -EIO;
2694 if (radio_on)
2695 status |= TP_ACPI_BLUETOOTH_RADIOSSW;
2696 else
2697 status &= ~TP_ACPI_BLUETOOTH_RADIOSSW;
2698 if (!acpi_evalf(hkey_handle, NULL, "SBDC", "vd", status))
2699 return -EIO;
2700
2701 return 0;
2702 }
2703
2704 /* procfs -------------------------------------------------------------- */
2705 static int bluetooth_read(char *p)
2706 {
2707 int len = 0;
2708 int status = bluetooth_get_radiosw();
2709
2710 if (!tp_features.bluetooth)
2711 len += sprintf(p + len, "status:\t\tnot supported\n");
2712 else {
2713 len += sprintf(p + len, "status:\t\t%s\n",
2714 (status)? "enabled" : "disabled");
2715 len += sprintf(p + len, "commands:\tenable, disable\n");
2716 }
2717
2718 return len;
2719 }
2720
2721 static int bluetooth_write(char *buf)
2722 {
2723 char *cmd;
2724
2725 if (!tp_features.bluetooth)
2726 return -ENODEV;
2727
2728 while ((cmd = next_cmd(&buf))) {
2729 if (strlencmp(cmd, "enable") == 0) {
2730 bluetooth_set_radiosw(1);
2731 } else if (strlencmp(cmd, "disable") == 0) {
2732 bluetooth_set_radiosw(0);
2733 } else
2734 return -EINVAL;
2735 }
2736
2737 return 0;
2738 }
2739
2740 static struct ibm_struct bluetooth_driver_data = {
2741 .name = "bluetooth",
2742 .read = bluetooth_read,
2743 .write = bluetooth_write,
2744 .exit = bluetooth_exit,
2745 };
2746
2747 /*************************************************************************
2748 * Wan subdriver
2749 */
2750
2751 enum {
2752 /* ACPI GWAN/SWAN bits */
2753 TP_ACPI_WANCARD_HWPRESENT = 0x01, /* Wan hw available */
2754 TP_ACPI_WANCARD_RADIOSSW = 0x02, /* Wan radio enabled */
2755 TP_ACPI_WANCARD_UNK = 0x04, /* unknown function */
2756 };
2757
2758 static int wan_get_radiosw(void);
2759 static int wan_set_radiosw(int radio_on);
2760
2761 /* sysfs wan enable ---------------------------------------------------- */
2762 static ssize_t wan_enable_show(struct device *dev,
2763 struct device_attribute *attr,
2764 char *buf)
2765 {
2766 int status;
2767
2768 status = wan_get_radiosw();
2769 if (status < 0)
2770 return status;
2771
2772 return snprintf(buf, PAGE_SIZE, "%d\n", status ? 1 : 0);
2773 }
2774
2775 static ssize_t wan_enable_store(struct device *dev,
2776 struct device_attribute *attr,
2777 const char *buf, size_t count)
2778 {
2779 unsigned long t;
2780 int res;
2781
2782 if (parse_strtoul(buf, 1, &t))
2783 return -EINVAL;
2784
2785 res = wan_set_radiosw(t);
2786
2787 return (res) ? res : count;
2788 }
2789
2790 static struct device_attribute dev_attr_wan_enable =
2791 __ATTR(wwan_enable, S_IWUSR | S_IRUGO,
2792 wan_enable_show, wan_enable_store);
2793
2794 /* --------------------------------------------------------------------- */
2795
2796 static struct attribute *wan_attributes[] = {
2797 &dev_attr_wan_enable.attr,
2798 NULL
2799 };
2800
2801 static const struct attribute_group wan_attr_group = {
2802 .attrs = wan_attributes,
2803 };
2804
2805 static int __init wan_init(struct ibm_init_struct *iibm)
2806 {
2807 int res;
2808 int status = 0;
2809
2810 vdbg_printk(TPACPI_DBG_INIT, "initializing wan subdriver\n");
2811
2812 TPACPI_ACPIHANDLE_INIT(hkey);
2813
2814 tp_features.wan = hkey_handle &&
2815 acpi_evalf(hkey_handle, &status, "GWAN", "qd");
2816
2817 vdbg_printk(TPACPI_DBG_INIT, "wan is %s, status 0x%02x\n",
2818 str_supported(tp_features.wan),
2819 status);
2820
2821 if (tp_features.wan) {
2822 if (!(status & TP_ACPI_WANCARD_HWPRESENT)) {
2823 /* no wan hardware present in system */
2824 tp_features.wan = 0;
2825 dbg_printk(TPACPI_DBG_INIT,
2826 "wan hardware not installed\n");
2827 } else {
2828 res = sysfs_create_group(&tpacpi_pdev->dev.kobj,
2829 &wan_attr_group);
2830 if (res)
2831 return res;
2832 }
2833 }
2834
2835 return (tp_features.wan)? 0 : 1;
2836 }
2837
2838 static void wan_exit(void)
2839 {
2840 sysfs_remove_group(&tpacpi_pdev->dev.kobj,
2841 &wan_attr_group);
2842 }
2843
2844 static int wan_get_radiosw(void)
2845 {
2846 int status;
2847
2848 if (!tp_features.wan)
2849 return -ENODEV;
2850
2851 if (!acpi_evalf(hkey_handle, &status, "GWAN", "d"))
2852 return -EIO;
2853
2854 return ((status & TP_ACPI_WANCARD_RADIOSSW) != 0);
2855 }
2856
2857 static int wan_set_radiosw(int radio_on)
2858 {
2859 int status;
2860
2861 if (!tp_features.wan)
2862 return -ENODEV;
2863
2864 if (!acpi_evalf(hkey_handle, &status, "GWAN", "d"))
2865 return -EIO;
2866 if (radio_on)
2867 status |= TP_ACPI_WANCARD_RADIOSSW;
2868 else
2869 status &= ~TP_ACPI_WANCARD_RADIOSSW;
2870 if (!acpi_evalf(hkey_handle, NULL, "SWAN", "vd", status))
2871 return -EIO;
2872
2873 return 0;
2874 }
2875
2876 /* procfs -------------------------------------------------------------- */
2877 static int wan_read(char *p)
2878 {
2879 int len = 0;
2880 int status = wan_get_radiosw();
2881
2882 if (!tp_features.wan)
2883 len += sprintf(p + len, "status:\t\tnot supported\n");
2884 else {
2885 len += sprintf(p + len, "status:\t\t%s\n",
2886 (status)? "enabled" : "disabled");
2887 len += sprintf(p + len, "commands:\tenable, disable\n");
2888 }
2889
2890 return len;
2891 }
2892
2893 static int wan_write(char *buf)
2894 {
2895 char *cmd;
2896
2897 if (!tp_features.wan)
2898 return -ENODEV;
2899
2900 while ((cmd = next_cmd(&buf))) {
2901 if (strlencmp(cmd, "enable") == 0) {
2902 wan_set_radiosw(1);
2903 } else if (strlencmp(cmd, "disable") == 0) {
2904 wan_set_radiosw(0);
2905 } else
2906 return -EINVAL;
2907 }
2908
2909 return 0;
2910 }
2911
2912 static struct ibm_struct wan_driver_data = {
2913 .name = "wan",
2914 .read = wan_read,
2915 .write = wan_write,
2916 .exit = wan_exit,
2917 .flags.experimental = 1,
2918 };
2919
2920 /*************************************************************************
2921 * Video subdriver
2922 */
2923
2924 #ifdef CONFIG_THINKPAD_ACPI_VIDEO
2925
2926 enum video_access_mode {
2927 TPACPI_VIDEO_NONE = 0,
2928 TPACPI_VIDEO_570, /* 570 */
2929 TPACPI_VIDEO_770, /* 600e/x, 770e, 770x */
2930 TPACPI_VIDEO_NEW, /* all others */
2931 };
2932
2933 enum { /* video status flags, based on VIDEO_570 */
2934 TP_ACPI_VIDEO_S_LCD = 0x01, /* LCD output enabled */
2935 TP_ACPI_VIDEO_S_CRT = 0x02, /* CRT output enabled */
2936 TP_ACPI_VIDEO_S_DVI = 0x08, /* DVI output enabled */
2937 };
2938
2939 enum { /* TPACPI_VIDEO_570 constants */
2940 TP_ACPI_VIDEO_570_PHSCMD = 0x87, /* unknown magic constant :( */
2941 TP_ACPI_VIDEO_570_PHSMASK = 0x03, /* PHS bits that map to
2942 * video_status_flags */
2943 TP_ACPI_VIDEO_570_PHS2CMD = 0x8b, /* unknown magic constant :( */
2944 TP_ACPI_VIDEO_570_PHS2SET = 0x80, /* unknown magic constant :( */
2945 };
2946
2947 static enum video_access_mode video_supported;
2948 static int video_orig_autosw;
2949
2950 static int video_autosw_get(void);
2951 static int video_autosw_set(int enable);
2952
2953 TPACPI_HANDLE(vid2, root, "\\_SB.PCI0.AGPB.VID"); /* G41 */
2954
2955 static int __init video_init(struct ibm_init_struct *iibm)
2956 {
2957 int ivga;
2958
2959 vdbg_printk(TPACPI_DBG_INIT, "initializing video subdriver\n");
2960
2961 TPACPI_ACPIHANDLE_INIT(vid);
2962 TPACPI_ACPIHANDLE_INIT(vid2);
2963
2964 if (vid2_handle && acpi_evalf(NULL, &ivga, "\\IVGA", "d") && ivga)
2965 /* G41, assume IVGA doesn't change */
2966 vid_handle = vid2_handle;
2967
2968 if (!vid_handle)
2969 /* video switching not supported on R30, R31 */
2970 video_supported = TPACPI_VIDEO_NONE;
2971 else if (acpi_evalf(vid_handle, &video_orig_autosw, "SWIT", "qd"))
2972 /* 570 */
2973 video_supported = TPACPI_VIDEO_570;
2974 else if (acpi_evalf(vid_handle, &video_orig_autosw, "^VADL", "qd"))
2975 /* 600e/x, 770e, 770x */
2976 video_supported = TPACPI_VIDEO_770;
2977 else
2978 /* all others */
2979 video_supported = TPACPI_VIDEO_NEW;
2980
2981 vdbg_printk(TPACPI_DBG_INIT, "video is %s, mode %d\n",
2982 str_supported(video_supported != TPACPI_VIDEO_NONE),
2983 video_supported);
2984
2985 return (video_supported != TPACPI_VIDEO_NONE)? 0 : 1;
2986 }
2987
2988 static void video_exit(void)
2989 {
2990 dbg_printk(TPACPI_DBG_EXIT,
2991 "restoring original video autoswitch mode\n");
2992 if (video_autosw_set(video_orig_autosw))
2993 printk(TPACPI_ERR "error while trying to restore original "
2994 "video autoswitch mode\n");
2995 }
2996
2997 static int video_outputsw_get(void)
2998 {
2999 int status = 0;
3000 int i;
3001
3002 switch (video_supported) {
3003 case TPACPI_VIDEO_570:
3004 if (!acpi_evalf(NULL, &i, "\\_SB.PHS", "dd",
3005 TP_ACPI_VIDEO_570_PHSCMD))
3006 return -EIO;
3007 status = i & TP_ACPI_VIDEO_570_PHSMASK;
3008 break;
3009 case TPACPI_VIDEO_770:
3010 if (!acpi_evalf(NULL, &i, "\\VCDL", "d"))
3011 return -EIO;
3012 if (i)
3013 status |= TP_ACPI_VIDEO_S_LCD;
3014 if (!acpi_evalf(NULL, &i, "\\VCDC", "d"))
3015 return -EIO;
3016 if (i)
3017 status |= TP_ACPI_VIDEO_S_CRT;
3018 break;
3019 case TPACPI_VIDEO_NEW:
3020 if (!acpi_evalf(NULL, NULL, "\\VUPS", "vd", 1) ||
3021 !acpi_evalf(NULL, &i, "\\VCDC", "d"))
3022 return -EIO;
3023 if (i)
3024 status |= TP_ACPI_VIDEO_S_CRT;
3025
3026 if (!acpi_evalf(NULL, NULL, "\\VUPS", "vd", 0) ||
3027 !acpi_evalf(NULL, &i, "\\VCDL", "d"))
3028 return -EIO;
3029 if (i)
3030 status |= TP_ACPI_VIDEO_S_LCD;
3031 if (!acpi_evalf(NULL, &i, "\\VCDD", "d"))
3032 return -EIO;
3033 if (i)
3034 status |= TP_ACPI_VIDEO_S_DVI;
3035 break;
3036 default:
3037 return -ENOSYS;
3038 }
3039
3040 return status;
3041 }
3042
3043 static int video_outputsw_set(int status)
3044 {
3045 int autosw;
3046 int res = 0;
3047
3048 switch (video_supported) {
3049 case TPACPI_VIDEO_570:
3050 res = acpi_evalf(NULL, NULL,
3051 "\\_SB.PHS2", "vdd",
3052 TP_ACPI_VIDEO_570_PHS2CMD,
3053 status | TP_ACPI_VIDEO_570_PHS2SET);
3054 break;
3055 case TPACPI_VIDEO_770:
3056 autosw = video_autosw_get();
3057 if (autosw < 0)
3058 return autosw;
3059
3060 res = video_autosw_set(1);
3061 if (res)
3062 return res;
3063 res = acpi_evalf(vid_handle, NULL,
3064 "ASWT", "vdd", status * 0x100, 0);
3065 if (!autosw && video_autosw_set(autosw)) {
3066 printk(TPACPI_ERR
3067 "video auto-switch left enabled due to error\n");
3068 return -EIO;
3069 }
3070 break;
3071 case TPACPI_VIDEO_NEW:
3072 res = acpi_evalf(NULL, NULL, "\\VUPS", "vd", 0x80) &&
3073 acpi_evalf(NULL, NULL, "\\VSDS", "vdd", status, 1);
3074 break;
3075 default:
3076 return -ENOSYS;
3077 }
3078
3079 return (res)? 0 : -EIO;
3080 }
3081
3082 static int video_autosw_get(void)
3083 {
3084 int autosw = 0;
3085
3086 switch (video_supported) {
3087 case TPACPI_VIDEO_570:
3088 if (!acpi_evalf(vid_handle, &autosw, "SWIT", "d"))
3089 return -EIO;
3090 break;
3091 case TPACPI_VIDEO_770:
3092 case TPACPI_VIDEO_NEW:
3093 if (!acpi_evalf(vid_handle, &autosw, "^VDEE", "d"))
3094 return -EIO;
3095 break;
3096 default:
3097 return -ENOSYS;
3098 }
3099
3100 return autosw & 1;
3101 }
3102
3103 static int video_autosw_set(int enable)
3104 {
3105 if (!acpi_evalf(vid_handle, NULL, "_DOS", "vd", (enable)? 1 : 0))
3106 return -EIO;
3107 return 0;
3108 }
3109
3110 static int video_outputsw_cycle(void)
3111 {
3112 int autosw = video_autosw_get();
3113 int res;
3114
3115 if (autosw < 0)
3116 return autosw;
3117
3118 switch (video_supported) {
3119 case TPACPI_VIDEO_570:
3120 res = video_autosw_set(1);
3121 if (res)
3122 return res;
3123 res = acpi_evalf(ec_handle, NULL, "_Q16", "v");
3124 break;
3125 case TPACPI_VIDEO_770:
3126 case TPACPI_VIDEO_NEW:
3127 res = video_autosw_set(1);
3128 if (res)
3129 return res;
3130 res = acpi_evalf(vid_handle, NULL, "VSWT", "v");
3131 break;
3132 default:
3133 return -ENOSYS;
3134 }
3135 if (!autosw && video_autosw_set(autosw)) {
3136 printk(TPACPI_ERR
3137 "video auto-switch left enabled due to error\n");
3138 return -EIO;
3139 }
3140
3141 return (res)? 0 : -EIO;
3142 }
3143
3144 static int video_expand_toggle(void)
3145 {
3146 switch (video_supported) {
3147 case TPACPI_VIDEO_570:
3148 return acpi_evalf(ec_handle, NULL, "_Q17", "v")?
3149 0 : -EIO;
3150 case TPACPI_VIDEO_770:
3151 return acpi_evalf(vid_handle, NULL, "VEXP", "v")?
3152 0 : -EIO;
3153 case TPACPI_VIDEO_NEW:
3154 return acpi_evalf(NULL, NULL, "\\VEXP", "v")?
3155 0 : -EIO;
3156 default:
3157 return -ENOSYS;
3158 }
3159 /* not reached */
3160 }
3161
3162 static int video_read(char *p)
3163 {
3164 int status, autosw;
3165 int len = 0;
3166
3167 if (video_supported == TPACPI_VIDEO_NONE) {
3168 len += sprintf(p + len, "status:\t\tnot supported\n");
3169 return len;
3170 }
3171
3172 status = video_outputsw_get();
3173 if (status < 0)
3174 return status;
3175
3176 autosw = video_autosw_get();
3177 if (autosw < 0)
3178 return autosw;
3179
3180 len += sprintf(p + len, "status:\t\tsupported\n");
3181 len += sprintf(p + len, "lcd:\t\t%s\n", enabled(status, 0));
3182 len += sprintf(p + len, "crt:\t\t%s\n", enabled(status, 1));
3183 if (video_supported == TPACPI_VIDEO_NEW)
3184 len += sprintf(p + len, "dvi:\t\t%s\n", enabled(status, 3));
3185 len += sprintf(p + len, "auto:\t\t%s\n", enabled(autosw, 0));
3186 len += sprintf(p + len, "commands:\tlcd_enable, lcd_disable\n");
3187 len += sprintf(p + len, "commands:\tcrt_enable, crt_disable\n");
3188 if (video_supported == TPACPI_VIDEO_NEW)
3189 len += sprintf(p + len, "commands:\tdvi_enable, dvi_disable\n");
3190 len += sprintf(p + len, "commands:\tauto_enable, auto_disable\n");
3191 len += sprintf(p + len, "commands:\tvideo_switch, expand_toggle\n");
3192
3193 return len;
3194 }
3195
3196 static int video_write(char *buf)
3197 {
3198 char *cmd;
3199 int enable, disable, status;
3200 int res;
3201
3202 if (video_supported == TPACPI_VIDEO_NONE)
3203 return -ENODEV;
3204
3205 enable = 0;
3206 disable = 0;
3207
3208 while ((cmd = next_cmd(&buf))) {
3209 if (strlencmp(cmd, "lcd_enable") == 0) {
3210 enable |= TP_ACPI_VIDEO_S_LCD;
3211 } else if (strlencmp(cmd, "lcd_disable") == 0) {
3212 disable |= TP_ACPI_VIDEO_S_LCD;
3213 } else if (strlencmp(cmd, "crt_enable") == 0) {
3214 enable |= TP_ACPI_VIDEO_S_CRT;
3215 } else if (strlencmp(cmd, "crt_disable") == 0) {
3216 disable |= TP_ACPI_VIDEO_S_CRT;
3217 } else if (video_supported == TPACPI_VIDEO_NEW &&
3218 strlencmp(cmd, "dvi_enable") == 0) {
3219 enable |= TP_ACPI_VIDEO_S_DVI;
3220 } else if (video_supported == TPACPI_VIDEO_NEW &&
3221 strlencmp(cmd, "dvi_disable") == 0) {
3222 disable |= TP_ACPI_VIDEO_S_DVI;
3223 } else if (strlencmp(cmd, "auto_enable") == 0) {
3224 res = video_autosw_set(1);
3225 if (res)
3226 return res;
3227 } else if (strlencmp(cmd, "auto_disable") == 0) {
3228 res = video_autosw_set(0);
3229 if (res)
3230 return res;
3231 } else if (strlencmp(cmd, "video_switch") == 0) {
3232 res = video_outputsw_cycle();
3233 if (res)
3234 return res;
3235 } else if (strlencmp(cmd, "expand_toggle") == 0) {
3236 res = video_expand_toggle();
3237 if (res)
3238 return res;
3239 } else
3240 return -EINVAL;
3241 }
3242
3243 if (enable || disable) {
3244 status = video_outputsw_get();
3245 if (status < 0)
3246 return status;
3247 res = video_outputsw_set((status & ~disable) | enable);
3248 if (res)
3249 return res;
3250 }
3251
3252 return 0;
3253 }
3254
3255 static struct ibm_struct video_driver_data = {
3256 .name = "video",
3257 .read = video_read,
3258 .write = video_write,
3259 .exit = video_exit,
3260 };
3261
3262 #endif /* CONFIG_THINKPAD_ACPI_VIDEO */
3263
3264 /*************************************************************************
3265 * Light (thinklight) subdriver
3266 */
3267
3268 TPACPI_HANDLE(lght, root, "\\LGHT"); /* A21e, A2xm/p, T20-22, X20-21 */
3269 TPACPI_HANDLE(ledb, ec, "LEDB"); /* G4x */
3270
3271 static int light_get_status(void)
3272 {
3273 int status = 0;
3274
3275 if (tp_features.light_status) {
3276 if (!acpi_evalf(ec_handle, &status, "KBLT", "d"))
3277 return -EIO;
3278 return (!!status);
3279 }
3280
3281 return -ENXIO;
3282 }
3283
3284 static int light_set_status(int status)
3285 {
3286 int rc;
3287
3288 if (tp_features.light) {
3289 if (cmos_handle) {
3290 rc = acpi_evalf(cmos_handle, NULL, NULL, "vd",
3291 (status)?
3292 TP_CMOS_THINKLIGHT_ON :
3293 TP_CMOS_THINKLIGHT_OFF);
3294 } else {
3295 rc = acpi_evalf(lght_handle, NULL, NULL, "vd",
3296 (status)? 1 : 0);
3297 }
3298 return (rc)? 0 : -EIO;
3299 }
3300
3301 return -ENXIO;
3302 }
3303
3304 static void light_set_status_worker(struct work_struct *work)
3305 {
3306 struct tpacpi_led_classdev *data =
3307 container_of(work, struct tpacpi_led_classdev, work);
3308
3309 if (likely(tpacpi_lifecycle == TPACPI_LIFE_RUNNING))
3310 light_set_status((data->new_brightness != LED_OFF));
3311 }
3312
3313 static void light_sysfs_set(struct led_classdev *led_cdev,
3314 enum led_brightness brightness)
3315 {
3316 struct tpacpi_led_classdev *data =
3317 container_of(led_cdev,
3318 struct tpacpi_led_classdev,
3319 led_classdev);
3320 data->new_brightness = brightness;
3321 queue_work(tpacpi_wq, &data->work);
3322 }
3323
3324 static enum led_brightness light_sysfs_get(struct led_classdev *led_cdev)
3325 {
3326 return (light_get_status() == 1)? LED_FULL : LED_OFF;
3327 }
3328
3329 static struct tpacpi_led_classdev tpacpi_led_thinklight = {
3330 .led_classdev = {
3331 .name = "tpacpi::thinklight",
3332 .brightness_set = &light_sysfs_set,
3333 .brightness_get = &light_sysfs_get,
3334 }
3335 };
3336
3337 static int __init light_init(struct ibm_init_struct *iibm)
3338 {
3339 int rc;
3340
3341 vdbg_printk(TPACPI_DBG_INIT, "initializing light subdriver\n");
3342
3343 TPACPI_ACPIHANDLE_INIT(ledb);
3344 TPACPI_ACPIHANDLE_INIT(lght);
3345 TPACPI_ACPIHANDLE_INIT(cmos);
3346 INIT_WORK(&tpacpi_led_thinklight.work, light_set_status_worker);
3347
3348 /* light not supported on 570, 600e/x, 770e, 770x, G4x, R30, R31 */
3349 tp_features.light = (cmos_handle || lght_handle) && !ledb_handle;
3350
3351 if (tp_features.light)
3352 /* light status not supported on
3353 570, 600e/x, 770e, 770x, G4x, R30, R31, R32, X20 */
3354 tp_features.light_status =
3355 acpi_evalf(ec_handle, NULL, "KBLT", "qv");
3356
3357 vdbg_printk(TPACPI_DBG_INIT, "light is %s, light status is %s\n",
3358 str_supported(tp_features.light),
3359 str_supported(tp_features.light_status));
3360
3361 if (!tp_features.light)
3362 return 1;
3363
3364 rc = led_classdev_register(&tpacpi_pdev->dev,
3365 &tpacpi_led_thinklight.led_classdev);
3366
3367 if (rc < 0) {
3368 tp_features.light = 0;
3369 tp_features.light_status = 0;
3370 } else {
3371 rc = 0;
3372 }
3373
3374 return rc;
3375 }
3376
3377 static void light_exit(void)
3378 {
3379 led_classdev_unregister(&tpacpi_led_thinklight.led_classdev);
3380 if (work_pending(&tpacpi_led_thinklight.work))
3381 flush_workqueue(tpacpi_wq);
3382 }
3383
3384 static int light_read(char *p)
3385 {
3386 int len = 0;
3387 int status;
3388
3389 if (!tp_features.light) {
3390 len += sprintf(p + len, "status:\t\tnot supported\n");
3391 } else if (!tp_features.light_status) {
3392 len += sprintf(p + len, "status:\t\tunknown\n");
3393 len += sprintf(p + len, "commands:\ton, off\n");
3394 } else {
3395 status = light_get_status();
3396 if (status < 0)
3397 return status;
3398 len += sprintf(p + len, "status:\t\t%s\n", onoff(status, 0));
3399 len += sprintf(p + len, "commands:\ton, off\n");
3400 }
3401
3402 return len;
3403 }
3404
3405 static int light_write(char *buf)
3406 {
3407 char *cmd;
3408 int newstatus = 0;
3409
3410 if (!tp_features.light)
3411 return -ENODEV;
3412
3413 while ((cmd = next_cmd(&buf))) {
3414 if (strlencmp(cmd, "on") == 0) {
3415 newstatus = 1;
3416 } else if (strlencmp(cmd, "off") == 0) {
3417 newstatus = 0;
3418 } else
3419 return -EINVAL;
3420 }
3421
3422 return light_set_status(newstatus);
3423 }
3424
3425 static struct ibm_struct light_driver_data = {
3426 .name = "light",
3427 .read = light_read,
3428 .write = light_write,
3429 .exit = light_exit,
3430 };
3431
3432 /*************************************************************************
3433 * Dock subdriver
3434 */
3435
3436 #ifdef CONFIG_THINKPAD_ACPI_DOCK
3437
3438 static void dock_notify(struct ibm_struct *ibm, u32 event);
3439 static int dock_read(char *p);
3440 static int dock_write(char *buf);
3441
3442 TPACPI_HANDLE(dock, root, "\\_SB.GDCK", /* X30, X31, X40 */
3443 "\\_SB.PCI0.DOCK", /* 600e/x,770e,770x,A2xm/p,T20-22,X20-21 */
3444 "\\_SB.PCI0.PCI1.DOCK", /* all others */
3445 "\\_SB.PCI.ISA.SLCE", /* 570 */
3446 ); /* A21e,G4x,R30,R31,R32,R40,R40e,R50e */
3447
3448 /* don't list other alternatives as we install a notify handler on the 570 */
3449 TPACPI_HANDLE(pci, root, "\\_SB.PCI"); /* 570 */
3450
3451 static const struct acpi_device_id ibm_pci_device_ids[] = {
3452 {PCI_ROOT_HID_STRING, 0},
3453 {"", 0},
3454 };
3455
3456 static struct tp_acpi_drv_struct ibm_dock_acpidriver[2] = {
3457 {
3458 .notify = dock_notify,
3459 .handle = &dock_handle,
3460 .type = ACPI_SYSTEM_NOTIFY,
3461 },
3462 {
3463 /* THIS ONE MUST NEVER BE USED FOR DRIVER AUTOLOADING.
3464 * We just use it to get notifications of dock hotplug
3465 * in very old thinkpads */
3466 .hid = ibm_pci_device_ids,
3467 .notify = dock_notify,
3468 .handle = &pci_handle,
3469 .type = ACPI_SYSTEM_NOTIFY,
3470 },
3471 };
3472
3473 static struct ibm_struct dock_driver_data[2] = {
3474 {
3475 .name = "dock",
3476 .read = dock_read,
3477 .write = dock_write,
3478 .acpi = &ibm_dock_acpidriver[0],
3479 },
3480 {
3481 .name = "dock",
3482 .acpi = &ibm_dock_acpidriver[1],
3483 },
3484 };
3485
3486 #define dock_docked() (_sta(dock_handle) & 1)
3487
3488 static int __init dock_init(struct ibm_init_struct *iibm)
3489 {
3490 vdbg_printk(TPACPI_DBG_INIT, "initializing dock subdriver\n");
3491
3492 TPACPI_ACPIHANDLE_INIT(dock);
3493
3494 vdbg_printk(TPACPI_DBG_INIT, "dock is %s\n",
3495 str_supported(dock_handle != NULL));
3496
3497 return (dock_handle)? 0 : 1;
3498 }
3499
3500 static int __init dock_init2(struct ibm_init_struct *iibm)
3501 {
3502 int dock2_needed;
3503
3504 vdbg_printk(TPACPI_DBG_INIT, "initializing dock subdriver part 2\n");
3505
3506 if (dock_driver_data[0].flags.acpi_driver_registered &&
3507 dock_driver_data[0].flags.acpi_notify_installed) {
3508 TPACPI_ACPIHANDLE_INIT(pci);
3509 dock2_needed = (pci_handle != NULL);
3510 vdbg_printk(TPACPI_DBG_INIT,
3511 "dock PCI handler for the TP 570 is %s\n",
3512 str_supported(dock2_needed));
3513 } else {
3514 vdbg_printk(TPACPI_DBG_INIT,
3515 "dock subdriver part 2 not required\n");
3516 dock2_needed = 0;
3517 }
3518
3519 return (dock2_needed)? 0 : 1;
3520 }
3521
3522 static void dock_notify(struct ibm_struct *ibm, u32 event)
3523 {
3524 int docked = dock_docked();
3525 int pci = ibm->acpi->hid && ibm->acpi->device &&
3526 acpi_match_device_ids(ibm->acpi->device, ibm_pci_device_ids);
3527 int data;
3528
3529 if (event == 1 && !pci) /* 570 */
3530 data = 1; /* button */
3531 else if (event == 1 && pci) /* 570 */
3532 data = 3; /* dock */
3533 else if (event == 3 && docked)
3534 data = 1; /* button */
3535 else if (event == 3 && !docked)
3536 data = 2; /* undock */
3537 else if (event == 0 && docked)
3538 data = 3; /* dock */
3539 else {
3540 printk(TPACPI_ERR "unknown dock event %d, status %d\n",
3541 event, _sta(dock_handle));
3542 data = 0; /* unknown */
3543 }
3544 acpi_bus_generate_proc_event(ibm->acpi->device, event, data);
3545 acpi_bus_generate_netlink_event(ibm->acpi->device->pnp.device_class,
3546 ibm->acpi->device->dev.bus_id,
3547 event, data);
3548 }
3549
3550 static int dock_read(char *p)
3551 {
3552 int len = 0;
3553 int docked = dock_docked();
3554
3555 if (!dock_handle)
3556 len += sprintf(p + len, "status:\t\tnot supported\n");
3557 else if (!docked)
3558 len += sprintf(p + len, "status:\t\tundocked\n");
3559 else {
3560 len += sprintf(p + len, "status:\t\tdocked\n");
3561 len += sprintf(p + len, "commands:\tdock, undock\n");
3562 }
3563
3564 return len;
3565 }
3566
3567 static int dock_write(char *buf)
3568 {
3569 char *cmd;
3570
3571 if (!dock_docked())
3572 return -ENODEV;
3573
3574 while ((cmd = next_cmd(&buf))) {
3575 if (strlencmp(cmd, "undock") == 0) {
3576 if (!acpi_evalf(dock_handle, NULL, "_DCK", "vd", 0) ||
3577 !acpi_evalf(dock_handle, NULL, "_EJ0", "vd", 1))
3578 return -EIO;
3579 } else if (strlencmp(cmd, "dock") == 0) {
3580 if (!acpi_evalf(dock_handle, NULL, "_DCK", "vd", 1))
3581 return -EIO;
3582 } else
3583 return -EINVAL;
3584 }
3585
3586 return 0;
3587 }
3588
3589 #endif /* CONFIG_THINKPAD_ACPI_DOCK */
3590
3591 /*************************************************************************
3592 * Bay subdriver
3593 */
3594
3595 #ifdef CONFIG_THINKPAD_ACPI_BAY
3596
3597 TPACPI_HANDLE(bay, root, "\\_SB.PCI.IDE.SECN.MAST", /* 570 */
3598 "\\_SB.PCI0.IDE0.IDES.IDSM", /* 600e/x, 770e, 770x */
3599 "\\_SB.PCI0.SATA.SCND.MSTR", /* T60, X60, Z60 */
3600 "\\_SB.PCI0.IDE0.SCND.MSTR", /* all others */
3601 ); /* A21e, R30, R31 */
3602 TPACPI_HANDLE(bay_ej, bay, "_EJ3", /* 600e/x, A2xm/p, A3x */
3603 "_EJ0", /* all others */
3604 ); /* 570,A21e,G4x,R30,R31,R32,R40e,R50e */
3605 TPACPI_HANDLE(bay2, root, "\\_SB.PCI0.IDE0.PRIM.SLAV", /* A3x, R32 */
3606 "\\_SB.PCI0.IDE0.IDEP.IDPS", /* 600e/x, 770e, 770x */
3607 ); /* all others */
3608 TPACPI_HANDLE(bay2_ej, bay2, "_EJ3", /* 600e/x, 770e, A3x */
3609 "_EJ0", /* 770x */
3610 ); /* all others */
3611
3612 static int __init bay_init(struct ibm_init_struct *iibm)
3613 {
3614 vdbg_printk(TPACPI_DBG_INIT, "initializing bay subdriver\n");
3615
3616 TPACPI_ACPIHANDLE_INIT(bay);
3617 if (bay_handle)
3618 TPACPI_ACPIHANDLE_INIT(bay_ej);
3619 TPACPI_ACPIHANDLE_INIT(bay2);
3620 if (bay2_handle)
3621 TPACPI_ACPIHANDLE_INIT(bay2_ej);
3622
3623 tp_features.bay_status = bay_handle &&
3624 acpi_evalf(bay_handle, NULL, "_STA", "qv");
3625 tp_features.bay_status2 = bay2_handle &&
3626 acpi_evalf(bay2_handle, NULL, "_STA", "qv");
3627
3628 tp_features.bay_eject = bay_handle && bay_ej_handle &&
3629 (strlencmp(bay_ej_path, "_EJ0") == 0 || experimental);
3630 tp_features.bay_eject2 = bay2_handle && bay2_ej_handle &&
3631 (strlencmp(bay2_ej_path, "_EJ0") == 0 || experimental);
3632
3633 vdbg_printk(TPACPI_DBG_INIT,
3634 "bay 1: status %s, eject %s; bay 2: status %s, eject %s\n",
3635 str_supported(tp_features.bay_status),
3636 str_supported(tp_features.bay_eject),
3637 str_supported(tp_features.bay_status2),
3638 str_supported(tp_features.bay_eject2));
3639
3640 return (tp_features.bay_status || tp_features.bay_eject ||
3641 tp_features.bay_status2 || tp_features.bay_eject2)? 0 : 1;
3642 }
3643
3644 static void bay_notify(struct ibm_struct *ibm, u32 event)
3645 {
3646 acpi_bus_generate_proc_event(ibm->acpi->device, event, 0);
3647 acpi_bus_generate_netlink_event(ibm->acpi->device->pnp.device_class,
3648 ibm->acpi->device->dev.bus_id,
3649 event, 0);
3650 }
3651
3652 #define bay_occupied(b) (_sta(b##_handle) & 1)
3653
3654 static int bay_read(char *p)
3655 {
3656 int len = 0;
3657 int occupied = bay_occupied(bay);
3658 int occupied2 = bay_occupied(bay2);
3659 int eject, eject2;
3660
3661 len += sprintf(p + len, "status:\t\t%s\n",
3662 tp_features.bay_status ?
3663 (occupied ? "occupied" : "unoccupied") :
3664 "not supported");
3665 if (tp_features.bay_status2)
3666 len += sprintf(p + len, "status2:\t%s\n", occupied2 ?
3667 "occupied" : "unoccupied");
3668
3669 eject = tp_features.bay_eject && occupied;
3670 eject2 = tp_features.bay_eject2 && occupied2;
3671
3672 if (eject && eject2)
3673 len += sprintf(p + len, "commands:\teject, eject2\n");
3674 else if (eject)
3675 len += sprintf(p + len, "commands:\teject\n");
3676 else if (eject2)
3677 len += sprintf(p + len, "commands:\teject2\n");
3678
3679 return len;
3680 }
3681
3682 static int bay_write(char *buf)
3683 {
3684 char *cmd;
3685
3686 if (!tp_features.bay_eject && !tp_features.bay_eject2)
3687 return -ENODEV;
3688
3689 while ((cmd = next_cmd(&buf))) {
3690 if (tp_features.bay_eject && strlencmp(cmd, "eject") == 0) {
3691 if (!acpi_evalf(bay_ej_handle, NULL, NULL, "vd", 1))
3692 return -EIO;
3693 } else if (tp_features.bay_eject2 &&
3694 strlencmp(cmd, "eject2") == 0) {
3695 if (!acpi_evalf(bay2_ej_handle, NULL, NULL, "vd", 1))
3696 return -EIO;
3697 } else
3698 return -EINVAL;
3699 }
3700
3701 return 0;
3702 }
3703
3704 static struct tp_acpi_drv_struct ibm_bay_acpidriver = {
3705 .notify = bay_notify,
3706 .handle = &bay_handle,
3707 .type = ACPI_SYSTEM_NOTIFY,
3708 };
3709
3710 static struct ibm_struct bay_driver_data = {
3711 .name = "bay",
3712 .read = bay_read,
3713 .write = bay_write,
3714 .acpi = &ibm_bay_acpidriver,
3715 };
3716
3717 #endif /* CONFIG_THINKPAD_ACPI_BAY */
3718
3719 /*************************************************************************
3720 * CMOS subdriver
3721 */
3722
3723 /* sysfs cmos_command -------------------------------------------------- */
3724 static ssize_t cmos_command_store(struct device *dev,
3725 struct device_attribute *attr,
3726 const char *buf, size_t count)
3727 {
3728 unsigned long cmos_cmd;
3729 int res;
3730
3731 if (parse_strtoul(buf, 21, &cmos_cmd))
3732 return -EINVAL;
3733
3734 res = issue_thinkpad_cmos_command(cmos_cmd);
3735 return (res)? res : count;
3736 }
3737
3738 static struct device_attribute dev_attr_cmos_command =
3739 __ATTR(cmos_command, S_IWUSR, NULL, cmos_command_store);
3740
3741 /* --------------------------------------------------------------------- */
3742
3743 static int __init cmos_init(struct ibm_init_struct *iibm)
3744 {
3745 int res;
3746
3747 vdbg_printk(TPACPI_DBG_INIT,
3748 "initializing cmos commands subdriver\n");
3749
3750 TPACPI_ACPIHANDLE_INIT(cmos);
3751
3752 vdbg_printk(TPACPI_DBG_INIT, "cmos commands are %s\n",
3753 str_supported(cmos_handle != NULL));
3754
3755 res = device_create_file(&tpacpi_pdev->dev, &dev_attr_cmos_command);
3756 if (res)
3757 return res;
3758
3759 return (cmos_handle)? 0 : 1;
3760 }
3761
3762 static void cmos_exit(void)
3763 {
3764 device_remove_file(&tpacpi_pdev->dev, &dev_attr_cmos_command);
3765 }
3766
3767 static int cmos_read(char *p)
3768 {
3769 int len = 0;
3770
3771 /* cmos not supported on 570, 600e/x, 770e, 770x, A21e, A2xm/p,
3772 R30, R31, T20-22, X20-21 */
3773 if (!cmos_handle)
3774 len += sprintf(p + len, "status:\t\tnot supported\n");
3775 else {
3776 len += sprintf(p + len, "status:\t\tsupported\n");
3777 len += sprintf(p + len, "commands:\t<cmd> (<cmd> is 0-21)\n");
3778 }
3779
3780 return len;
3781 }
3782
3783 static int cmos_write(char *buf)
3784 {
3785 char *cmd;
3786 int cmos_cmd, res;
3787
3788 while ((cmd = next_cmd(&buf))) {
3789 if (sscanf(cmd, "%u", &cmos_cmd) == 1 &&
3790 cmos_cmd >= 0 && cmos_cmd <= 21) {
3791 /* cmos_cmd set */
3792 } else
3793 return -EINVAL;
3794
3795 res = issue_thinkpad_cmos_command(cmos_cmd);
3796 if (res)
3797 return res;
3798 }
3799
3800 return 0;
3801 }
3802
3803 static struct ibm_struct cmos_driver_data = {
3804 .name = "cmos",
3805 .read = cmos_read,
3806 .write = cmos_write,
3807 .exit = cmos_exit,
3808 };
3809
3810 /*************************************************************************
3811 * LED subdriver
3812 */
3813
3814 enum led_access_mode {
3815 TPACPI_LED_NONE = 0,
3816 TPACPI_LED_570, /* 570 */
3817 TPACPI_LED_OLD, /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20-21 */
3818 TPACPI_LED_NEW, /* all others */
3819 };
3820
3821 enum { /* For TPACPI_LED_OLD */
3822 TPACPI_LED_EC_HLCL = 0x0c, /* EC reg to get led to power on */
3823 TPACPI_LED_EC_HLBL = 0x0d, /* EC reg to blink a lit led */
3824 TPACPI_LED_EC_HLMS = 0x0e, /* EC reg to select led to command */
3825 };
3826
3827 enum led_status_t {
3828 TPACPI_LED_OFF = 0,
3829 TPACPI_LED_ON,
3830 TPACPI_LED_BLINK,
3831 };
3832
3833 static enum led_access_mode led_supported;
3834
3835 TPACPI_HANDLE(led, ec, "SLED", /* 570 */
3836 "SYSL", /* 600e/x, 770e, 770x, A21e, A2xm/p, */
3837 /* T20-22, X20-21 */
3838 "LED", /* all others */
3839 ); /* R30, R31 */
3840
3841 #define TPACPI_LED_NUMLEDS 8
3842 static struct tpacpi_led_classdev *tpacpi_leds;
3843 static enum led_status_t tpacpi_led_state_cache[TPACPI_LED_NUMLEDS];
3844 static const char * const tpacpi_led_names[TPACPI_LED_NUMLEDS] = {
3845 /* there's a limit of 19 chars + NULL before 2.6.26 */
3846 "tpacpi::power",
3847 "tpacpi:orange:batt",
3848 "tpacpi:green:batt",
3849 "tpacpi::dock_active",
3850 "tpacpi::bay_active",
3851 "tpacpi::dock_batt",
3852 "tpacpi::unknown_led",
3853 "tpacpi::standby",
3854 };
3855
3856 static int led_get_status(const unsigned int led)
3857 {
3858 int status;
3859 enum led_status_t led_s;
3860
3861 switch (led_supported) {
3862 case TPACPI_LED_570:
3863 if (!acpi_evalf(ec_handle,
3864 &status, "GLED", "dd", 1 << led))
3865 return -EIO;
3866 led_s = (status == 0)?
3867 TPACPI_LED_OFF :
3868 ((status == 1)?
3869 TPACPI_LED_ON :
3870 TPACPI_LED_BLINK);
3871 tpacpi_led_state_cache[led] = led_s;
3872 return led_s;
3873 default:
3874 return -ENXIO;
3875 }
3876
3877 /* not reached */
3878 }
3879
3880 static int led_set_status(const unsigned int led,
3881 const enum led_status_t ledstatus)
3882 {
3883 /* off, on, blink. Index is led_status_t */
3884 static const unsigned int led_sled_arg1[] = { 0, 1, 3 };
3885 static const unsigned int led_led_arg1[] = { 0, 0x80, 0xc0 };
3886
3887 int rc = 0;
3888
3889 switch (led_supported) {
3890 case TPACPI_LED_570:
3891 /* 570 */
3892 if (led > 7)
3893 return -EINVAL;
3894 if (!acpi_evalf(led_handle, NULL, NULL, "vdd",
3895 (1 << led), led_sled_arg1[ledstatus]))
3896 rc = -EIO;
3897 break;
3898 case TPACPI_LED_OLD:
3899 /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20 */
3900 if (led > 7)
3901 return -EINVAL;
3902 rc = ec_write(TPACPI_LED_EC_HLMS, (1 << led));
3903 if (rc >= 0)
3904 rc = ec_write(TPACPI_LED_EC_HLBL,
3905 (ledstatus == TPACPI_LED_BLINK) << led);
3906 if (rc >= 0)
3907 rc = ec_write(TPACPI_LED_EC_HLCL,
3908 (ledstatus != TPACPI_LED_OFF) << led);
3909 break;
3910 case TPACPI_LED_NEW:
3911 /* all others */
3912 if (!acpi_evalf(led_handle, NULL, NULL, "vdd",
3913 led, led_led_arg1[ledstatus]))
3914 rc = -EIO;
3915 break;
3916 default:
3917 rc = -ENXIO;
3918 }
3919
3920 if (!rc)
3921 tpacpi_led_state_cache[led] = ledstatus;
3922
3923 return rc;
3924 }
3925
3926 static void led_sysfs_set_status(unsigned int led,
3927 enum led_brightness brightness)
3928 {
3929 led_set_status(led,
3930 (brightness == LED_OFF) ?
3931 TPACPI_LED_OFF :
3932 (tpacpi_led_state_cache[led] == TPACPI_LED_BLINK) ?
3933 TPACPI_LED_BLINK : TPACPI_LED_ON);
3934 }
3935
3936 static void led_set_status_worker(struct work_struct *work)
3937 {
3938 struct tpacpi_led_classdev *data =
3939 container_of(work, struct tpacpi_led_classdev, work);
3940
3941 if (likely(tpacpi_lifecycle == TPACPI_LIFE_RUNNING))
3942 led_sysfs_set_status(data->led, data->new_brightness);
3943 }
3944
3945 static void led_sysfs_set(struct led_classdev *led_cdev,
3946 enum led_brightness brightness)
3947 {
3948 struct tpacpi_led_classdev *data = container_of(led_cdev,
3949 struct tpacpi_led_classdev, led_classdev);
3950
3951 data->new_brightness = brightness;
3952 queue_work(tpacpi_wq, &data->work);
3953 }
3954
3955 static int led_sysfs_blink_set(struct led_classdev *led_cdev,
3956 unsigned long *delay_on, unsigned long *delay_off)
3957 {
3958 struct tpacpi_led_classdev *data = container_of(led_cdev,
3959 struct tpacpi_led_classdev, led_classdev);
3960
3961 /* Can we choose the flash rate? */
3962 if (*delay_on == 0 && *delay_off == 0) {
3963 /* yes. set them to the hardware blink rate (1 Hz) */
3964 *delay_on = 500; /* ms */
3965 *delay_off = 500; /* ms */
3966 } else if ((*delay_on != 500) || (*delay_off != 500))
3967 return -EINVAL;
3968
3969 data->new_brightness = TPACPI_LED_BLINK;
3970 queue_work(tpacpi_wq, &data->work);
3971
3972 return 0;
3973 }
3974
3975 static enum led_brightness led_sysfs_get(struct led_classdev *led_cdev)
3976 {
3977 int rc;
3978
3979 struct tpacpi_led_classdev *data = container_of(led_cdev,
3980 struct tpacpi_led_classdev, led_classdev);
3981
3982 rc = led_get_status(data->led);
3983
3984 if (rc == TPACPI_LED_OFF || rc < 0)
3985 rc = LED_OFF; /* no error handling in led class :( */
3986 else
3987 rc = LED_FULL;
3988
3989 return rc;
3990 }
3991
3992 static void led_exit(void)
3993 {
3994 unsigned int i;
3995
3996 for (i = 0; i < TPACPI_LED_NUMLEDS; i++) {
3997 if (tpacpi_leds[i].led_classdev.name)
3998 led_classdev_unregister(&tpacpi_leds[i].led_classdev);
3999 }
4000
4001 kfree(tpacpi_leds);
4002 }
4003
4004 static int __init led_init(struct ibm_init_struct *iibm)
4005 {
4006 unsigned int i;
4007 int rc;
4008
4009 vdbg_printk(TPACPI_DBG_INIT, "initializing LED subdriver\n");
4010
4011 TPACPI_ACPIHANDLE_INIT(led);
4012
4013 if (!led_handle)
4014 /* led not supported on R30, R31 */
4015 led_supported = TPACPI_LED_NONE;
4016 else if (strlencmp(led_path, "SLED") == 0)
4017 /* 570 */
4018 led_supported = TPACPI_LED_570;
4019 else if (strlencmp(led_path, "SYSL") == 0)
4020 /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20-21 */
4021 led_supported = TPACPI_LED_OLD;
4022 else
4023 /* all others */
4024 led_supported = TPACPI_LED_NEW;
4025
4026 vdbg_printk(TPACPI_DBG_INIT, "LED commands are %s, mode %d\n",
4027 str_supported(led_supported), led_supported);
4028
4029 tpacpi_leds = kzalloc(sizeof(*tpacpi_leds) * TPACPI_LED_NUMLEDS,
4030 GFP_KERNEL);
4031 if (!tpacpi_leds) {
4032 printk(TPACPI_ERR "Out of memory for LED data\n");
4033 return -ENOMEM;
4034 }
4035
4036 for (i = 0; i < TPACPI_LED_NUMLEDS; i++) {
4037 tpacpi_leds[i].led = i;
4038
4039 tpacpi_leds[i].led_classdev.brightness_set = &led_sysfs_set;
4040 tpacpi_leds[i].led_classdev.blink_set = &led_sysfs_blink_set;
4041 if (led_supported == TPACPI_LED_570)
4042 tpacpi_leds[i].led_classdev.brightness_get =
4043 &led_sysfs_get;
4044
4045 tpacpi_leds[i].led_classdev.name = tpacpi_led_names[i];
4046
4047 INIT_WORK(&tpacpi_leds[i].work, led_set_status_worker);
4048
4049 rc = led_classdev_register(&tpacpi_pdev->dev,
4050 &tpacpi_leds[i].led_classdev);
4051 if (rc < 0) {
4052 tpacpi_leds[i].led_classdev.name = NULL;
4053 led_exit();
4054 return rc;
4055 }
4056 }
4057
4058 return (led_supported != TPACPI_LED_NONE)? 0 : 1;
4059 }
4060
4061 #define str_led_status(s) \
4062 ((s) == TPACPI_LED_OFF ? "off" : \
4063 ((s) == TPACPI_LED_ON ? "on" : "blinking"))
4064
4065 static int led_read(char *p)
4066 {
4067 int len = 0;
4068
4069 if (!led_supported) {
4070 len += sprintf(p + len, "status:\t\tnot supported\n");
4071 return len;
4072 }
4073 len += sprintf(p + len, "status:\t\tsupported\n");
4074
4075 if (led_supported == TPACPI_LED_570) {
4076 /* 570 */
4077 int i, status;
4078 for (i = 0; i < 8; i++) {
4079 status = led_get_status(i);
4080 if (status < 0)
4081 return -EIO;
4082 len += sprintf(p + len, "%d:\t\t%s\n",
4083 i, str_led_status(status));
4084 }
4085 }
4086
4087 len += sprintf(p + len, "commands:\t"
4088 "<led> on, <led> off, <led> blink (<led> is 0-7)\n");
4089
4090 return len;
4091 }
4092
4093 static int led_write(char *buf)
4094 {
4095 char *cmd;
4096 int led, rc;
4097 enum led_status_t s;
4098
4099 if (!led_supported)
4100 return -ENODEV;
4101
4102 while ((cmd = next_cmd(&buf))) {
4103 if (sscanf(cmd, "%d", &led) != 1 || led < 0 || led > 7)
4104 return -EINVAL;
4105
4106 if (strstr(cmd, "off")) {
4107 s = TPACPI_LED_OFF;
4108 } else if (strstr(cmd, "on")) {
4109 s = TPACPI_LED_ON;
4110 } else if (strstr(cmd, "blink")) {
4111 s = TPACPI_LED_BLINK;
4112 } else {
4113 return -EINVAL;
4114 }
4115
4116 rc = led_set_status(led, s);
4117 if (rc < 0)
4118 return rc;
4119 }
4120
4121 return 0;
4122 }
4123
4124 static struct ibm_struct led_driver_data = {
4125 .name = "led",
4126 .read = led_read,
4127 .write = led_write,
4128 .exit = led_exit,
4129 };
4130
4131 /*************************************************************************
4132 * Beep subdriver
4133 */
4134
4135 TPACPI_HANDLE(beep, ec, "BEEP"); /* all except R30, R31 */
4136
4137 static int __init beep_init(struct ibm_init_struct *iibm)
4138 {
4139 vdbg_printk(TPACPI_DBG_INIT, "initializing beep subdriver\n");
4140
4141 TPACPI_ACPIHANDLE_INIT(beep);
4142
4143 vdbg_printk(TPACPI_DBG_INIT, "beep is %s\n",
4144 str_supported(beep_handle != NULL));
4145
4146 return (beep_handle)? 0 : 1;
4147 }
4148
4149 static int beep_read(char *p)
4150 {
4151 int len = 0;
4152
4153 if (!beep_handle)
4154 len += sprintf(p + len, "status:\t\tnot supported\n");
4155 else {
4156 len += sprintf(p + len, "status:\t\tsupported\n");
4157 len += sprintf(p + len, "commands:\t<cmd> (<cmd> is 0-17)\n");
4158 }
4159
4160 return len;
4161 }
4162
4163 static int beep_write(char *buf)
4164 {
4165 char *cmd;
4166 int beep_cmd;
4167
4168 if (!beep_handle)
4169 return -ENODEV;
4170
4171 while ((cmd = next_cmd(&buf))) {
4172 if (sscanf(cmd, "%u", &beep_cmd) == 1 &&
4173 beep_cmd >= 0 && beep_cmd <= 17) {
4174 /* beep_cmd set */
4175 } else
4176 return -EINVAL;
4177 if (!acpi_evalf(beep_handle, NULL, NULL, "vdd", beep_cmd, 0))
4178 return -EIO;
4179 }
4180
4181 return 0;
4182 }
4183
4184 static struct ibm_struct beep_driver_data = {
4185 .name = "beep",
4186 .read = beep_read,
4187 .write = beep_write,
4188 };
4189
4190 /*************************************************************************
4191 * Thermal subdriver
4192 */
4193
4194 enum thermal_access_mode {
4195 TPACPI_THERMAL_NONE = 0, /* No thermal support */
4196 TPACPI_THERMAL_ACPI_TMP07, /* Use ACPI TMP0-7 */
4197 TPACPI_THERMAL_ACPI_UPDT, /* Use ACPI TMP0-7 with UPDT */
4198 TPACPI_THERMAL_TPEC_8, /* Use ACPI EC regs, 8 sensors */
4199 TPACPI_THERMAL_TPEC_16, /* Use ACPI EC regs, 16 sensors */
4200 };
4201
4202 enum { /* TPACPI_THERMAL_TPEC_* */
4203 TP_EC_THERMAL_TMP0 = 0x78, /* ACPI EC regs TMP 0..7 */
4204 TP_EC_THERMAL_TMP8 = 0xC0, /* ACPI EC regs TMP 8..15 */
4205 TP_EC_THERMAL_TMP_NA = -128, /* ACPI EC sensor not available */
4206 };
4207
4208 #define TPACPI_MAX_THERMAL_SENSORS 16 /* Max thermal sensors supported */
4209 struct ibm_thermal_sensors_struct {
4210 s32 temp[TPACPI_MAX_THERMAL_SENSORS];
4211 };
4212
4213 static enum thermal_access_mode thermal_read_mode;
4214
4215 /* idx is zero-based */
4216 static int thermal_get_sensor(int idx, s32 *value)
4217 {
4218 int t;
4219 s8 tmp;
4220 char tmpi[5];
4221
4222 t = TP_EC_THERMAL_TMP0;
4223
4224 switch (thermal_read_mode) {
4225 #if TPACPI_MAX_THERMAL_SENSORS >= 16
4226 case TPACPI_THERMAL_TPEC_16:
4227 if (idx >= 8 && idx <= 15) {
4228 t = TP_EC_THERMAL_TMP8;
4229 idx -= 8;
4230 }
4231 /* fallthrough */
4232 #endif
4233 case TPACPI_THERMAL_TPEC_8:
4234 if (idx <= 7) {
4235 if (!acpi_ec_read(t + idx, &tmp))
4236 return -EIO;
4237 *value = tmp * 1000;
4238 return 0;
4239 }
4240 break;
4241
4242 case TPACPI_THERMAL_ACPI_UPDT:
4243 if (idx <= 7) {
4244 snprintf(tmpi, sizeof(tmpi), "TMP%c", '0' + idx);
4245 if (!acpi_evalf(ec_handle, NULL, "UPDT", "v"))
4246 return -EIO;
4247 if (!acpi_evalf(ec_handle, &t, tmpi, "d"))
4248 return -EIO;
4249 *value = (t - 2732) * 100;
4250 return 0;
4251 }
4252 break;
4253
4254 case TPACPI_THERMAL_ACPI_TMP07:
4255 if (idx <= 7) {
4256 snprintf(tmpi, sizeof(tmpi), "TMP%c", '0' + idx);
4257 if (!acpi_evalf(ec_handle, &t, tmpi, "d"))
4258 return -EIO;
4259 if (t > 127 || t < -127)
4260 t = TP_EC_THERMAL_TMP_NA;
4261 *value = t * 1000;
4262 return 0;
4263 }
4264 break;
4265
4266 case TPACPI_THERMAL_NONE:
4267 default:
4268 return -ENOSYS;
4269 }
4270
4271 return -EINVAL;
4272 }
4273
4274 static int thermal_get_sensors(struct ibm_thermal_sensors_struct *s)
4275 {
4276 int res, i;
4277 int n;
4278
4279 n = 8;
4280 i = 0;
4281
4282 if (!s)
4283 return -EINVAL;
4284
4285 if (thermal_read_mode == TPACPI_THERMAL_TPEC_16)
4286 n = 16;
4287
4288 for (i = 0 ; i < n; i++) {
4289 res = thermal_get_sensor(i, &s->temp[i]);
4290 if (res)
4291 return res;
4292 }
4293
4294 return n;
4295 }
4296
4297 /* sysfs temp##_input -------------------------------------------------- */
4298
4299 static ssize_t thermal_temp_input_show(struct device *dev,
4300 struct device_attribute *attr,
4301 char *buf)
4302 {
4303 struct sensor_device_attribute *sensor_attr =
4304 to_sensor_dev_attr(attr);
4305 int idx = sensor_attr->index;
4306 s32 value;
4307 int res;
4308
4309 res = thermal_get_sensor(idx, &value);
4310 if (res)
4311 return res;
4312 if (value == TP_EC_THERMAL_TMP_NA * 1000)
4313 return -ENXIO;
4314
4315 return snprintf(buf, PAGE_SIZE, "%d\n", value);
4316 }
4317
4318 #define THERMAL_SENSOR_ATTR_TEMP(_idxA, _idxB) \
4319 SENSOR_ATTR(temp##_idxA##_input, S_IRUGO, \
4320 thermal_temp_input_show, NULL, _idxB)
4321
4322 static struct sensor_device_attribute sensor_dev_attr_thermal_temp_input[] = {
4323 THERMAL_SENSOR_ATTR_TEMP(1, 0),
4324 THERMAL_SENSOR_ATTR_TEMP(2, 1),
4325 THERMAL_SENSOR_ATTR_TEMP(3, 2),
4326 THERMAL_SENSOR_ATTR_TEMP(4, 3),
4327 THERMAL_SENSOR_ATTR_TEMP(5, 4),
4328 THERMAL_SENSOR_ATTR_TEMP(6, 5),
4329 THERMAL_SENSOR_ATTR_TEMP(7, 6),
4330 THERMAL_SENSOR_ATTR_TEMP(8, 7),
4331 THERMAL_SENSOR_ATTR_TEMP(9, 8),
4332 THERMAL_SENSOR_ATTR_TEMP(10, 9),
4333 THERMAL_SENSOR_ATTR_TEMP(11, 10),
4334 THERMAL_SENSOR_ATTR_TEMP(12, 11),
4335 THERMAL_SENSOR_ATTR_TEMP(13, 12),
4336 THERMAL_SENSOR_ATTR_TEMP(14, 13),
4337 THERMAL_SENSOR_ATTR_TEMP(15, 14),
4338 THERMAL_SENSOR_ATTR_TEMP(16, 15),
4339 };
4340
4341 #define THERMAL_ATTRS(X) \
4342 &sensor_dev_attr_thermal_temp_input[X].dev_attr.attr
4343
4344 static struct attribute *thermal_temp_input_attr[] = {
4345 THERMAL_ATTRS(8),
4346 THERMAL_ATTRS(9),
4347 THERMAL_ATTRS(10),
4348 THERMAL_ATTRS(11),
4349 THERMAL_ATTRS(12),
4350 THERMAL_ATTRS(13),
4351 THERMAL_ATTRS(14),
4352 THERMAL_ATTRS(15),
4353 THERMAL_ATTRS(0),
4354 THERMAL_ATTRS(1),
4355 THERMAL_ATTRS(2),
4356 THERMAL_ATTRS(3),
4357 THERMAL_ATTRS(4),
4358 THERMAL_ATTRS(5),
4359 THERMAL_ATTRS(6),
4360 THERMAL_ATTRS(7),
4361 NULL
4362 };
4363
4364 static const struct attribute_group thermal_temp_input16_group = {
4365 .attrs = thermal_temp_input_attr
4366 };
4367
4368 static const struct attribute_group thermal_temp_input8_group = {
4369 .attrs = &thermal_temp_input_attr[8]
4370 };
4371
4372 #undef THERMAL_SENSOR_ATTR_TEMP
4373 #undef THERMAL_ATTRS
4374
4375 /* --------------------------------------------------------------------- */
4376
4377 static int __init thermal_init(struct ibm_init_struct *iibm)
4378 {
4379 u8 t, ta1, ta2;
4380 int i;
4381 int acpi_tmp7;
4382 int res;
4383
4384 vdbg_printk(TPACPI_DBG_INIT, "initializing thermal subdriver\n");
4385
4386 acpi_tmp7 = acpi_evalf(ec_handle, NULL, "TMP7", "qv");
4387
4388 if (thinkpad_id.ec_model) {
4389 /*
4390 * Direct EC access mode: sensors at registers
4391 * 0x78-0x7F, 0xC0-0xC7. Registers return 0x00 for
4392 * non-implemented, thermal sensors return 0x80 when
4393 * not available
4394 */
4395
4396 ta1 = ta2 = 0;
4397 for (i = 0; i < 8; i++) {
4398 if (acpi_ec_read(TP_EC_THERMAL_TMP0 + i, &t)) {
4399 ta1 |= t;
4400 } else {
4401 ta1 = 0;
4402 break;
4403 }
4404 if (acpi_ec_read(TP_EC_THERMAL_TMP8 + i, &t)) {
4405 ta2 |= t;
4406 } else {
4407 ta1 = 0;
4408 break;
4409 }
4410 }
4411 if (ta1 == 0) {
4412 /* This is sheer paranoia, but we handle it anyway */
4413 if (acpi_tmp7) {
4414 printk(TPACPI_ERR
4415 "ThinkPad ACPI EC access misbehaving, "
4416 "falling back to ACPI TMPx access "
4417 "mode\n");
4418 thermal_read_mode = TPACPI_THERMAL_ACPI_TMP07;
4419 } else {
4420 printk(TPACPI_ERR
4421 "ThinkPad ACPI EC access misbehaving, "
4422 "disabling thermal sensors access\n");
4423 thermal_read_mode = TPACPI_THERMAL_NONE;
4424 }
4425 } else {
4426 thermal_read_mode =
4427 (ta2 != 0) ?
4428 TPACPI_THERMAL_TPEC_16 : TPACPI_THERMAL_TPEC_8;
4429 }
4430 } else if (acpi_tmp7) {
4431 if (acpi_evalf(ec_handle, NULL, "UPDT", "qv")) {
4432 /* 600e/x, 770e, 770x */
4433 thermal_read_mode = TPACPI_THERMAL_ACPI_UPDT;
4434 } else {
4435 /* Standard ACPI TMPx access, max 8 sensors */
4436 thermal_read_mode = TPACPI_THERMAL_ACPI_TMP07;
4437 }
4438 } else {
4439 /* temperatures not supported on 570, G4x, R30, R31, R32 */
4440 thermal_read_mode = TPACPI_THERMAL_NONE;
4441 }
4442
4443 vdbg_printk(TPACPI_DBG_INIT, "thermal is %s, mode %d\n",
4444 str_supported(thermal_read_mode != TPACPI_THERMAL_NONE),
4445 thermal_read_mode);
4446
4447 switch (thermal_read_mode) {
4448 case TPACPI_THERMAL_TPEC_16:
4449 res = sysfs_create_group(&tpacpi_sensors_pdev->dev.kobj,
4450 &thermal_temp_input16_group);
4451 if (res)
4452 return res;
4453 break;
4454 case TPACPI_THERMAL_TPEC_8:
4455 case TPACPI_THERMAL_ACPI_TMP07:
4456 case TPACPI_THERMAL_ACPI_UPDT:
4457 res = sysfs_create_group(&tpacpi_sensors_pdev->dev.kobj,
4458 &thermal_temp_input8_group);
4459 if (res)
4460 return res;
4461 break;
4462 case TPACPI_THERMAL_NONE:
4463 default:
4464 return 1;
4465 }
4466
4467 return 0;
4468 }
4469
4470 static void thermal_exit(void)
4471 {
4472 switch (thermal_read_mode) {
4473 case TPACPI_THERMAL_TPEC_16:
4474 sysfs_remove_group(&tpacpi_sensors_pdev->dev.kobj,
4475 &thermal_temp_input16_group);
4476 break;
4477 case TPACPI_THERMAL_TPEC_8:
4478 case TPACPI_THERMAL_ACPI_TMP07:
4479 case TPACPI_THERMAL_ACPI_UPDT:
4480 sysfs_remove_group(&tpacpi_sensors_pdev->dev.kobj,
4481 &thermal_temp_input16_group);
4482 break;
4483 case TPACPI_THERMAL_NONE:
4484 default:
4485 break;
4486 }
4487 }
4488
4489 static int thermal_read(char *p)
4490 {
4491 int len = 0;
4492 int n, i;
4493 struct ibm_thermal_sensors_struct t;
4494
4495 n = thermal_get_sensors(&t);
4496 if (unlikely(n < 0))
4497 return n;
4498
4499 len += sprintf(p + len, "temperatures:\t");
4500
4501 if (n > 0) {
4502 for (i = 0; i < (n - 1); i++)
4503 len += sprintf(p + len, "%d ", t.temp[i] / 1000);
4504 len += sprintf(p + len, "%d\n", t.temp[i] / 1000);
4505 } else
4506 len += sprintf(p + len, "not supported\n");
4507
4508 return len;
4509 }
4510
4511 static struct ibm_struct thermal_driver_data = {
4512 .name = "thermal",
4513 .read = thermal_read,
4514 .exit = thermal_exit,
4515 };
4516
4517 /*************************************************************************
4518 * EC Dump subdriver
4519 */
4520
4521 static u8 ecdump_regs[256];
4522
4523 static int ecdump_read(char *p)
4524 {
4525 int len = 0;
4526 int i, j;
4527 u8 v;
4528
4529 len += sprintf(p + len, "EC "
4530 " +00 +01 +02 +03 +04 +05 +06 +07"
4531 " +08 +09 +0a +0b +0c +0d +0e +0f\n");
4532 for (i = 0; i < 256; i += 16) {
4533 len += sprintf(p + len, "EC 0x%02x:", i);
4534 for (j = 0; j < 16; j++) {
4535 if (!acpi_ec_read(i + j, &v))
4536 break;
4537 if (v != ecdump_regs[i + j])
4538 len += sprintf(p + len, " *%02x", v);
4539 else
4540 len += sprintf(p + len, " %02x", v);
4541 ecdump_regs[i + j] = v;
4542 }
4543 len += sprintf(p + len, "\n");
4544 if (j != 16)
4545 break;
4546 }
4547
4548 /* These are way too dangerous to advertise openly... */
4549 #if 0
4550 len += sprintf(p + len, "commands:\t0x<offset> 0x<value>"
4551 " (<offset> is 00-ff, <value> is 00-ff)\n");
4552 len += sprintf(p + len, "commands:\t0x<offset> <value> "
4553 " (<offset> is 00-ff, <value> is 0-255)\n");
4554 #endif
4555 return len;
4556 }
4557
4558 static int ecdump_write(char *buf)
4559 {
4560 char *cmd;
4561 int i, v;
4562
4563 while ((cmd = next_cmd(&buf))) {
4564 if (sscanf(cmd, "0x%x 0x%x", &i, &v) == 2) {
4565 /* i and v set */
4566 } else if (sscanf(cmd, "0x%x %u", &i, &v) == 2) {
4567 /* i and v set */
4568 } else
4569 return -EINVAL;
4570 if (i >= 0 && i < 256 && v >= 0 && v < 256) {
4571 if (!acpi_ec_write(i, v))
4572 return -EIO;
4573 } else
4574 return -EINVAL;
4575 }
4576
4577 return 0;
4578 }
4579
4580 static struct ibm_struct ecdump_driver_data = {
4581 .name = "ecdump",
4582 .read = ecdump_read,
4583 .write = ecdump_write,
4584 .flags.experimental = 1,
4585 };
4586
4587 /*************************************************************************
4588 * Backlight/brightness subdriver
4589 */
4590
4591 #define TPACPI_BACKLIGHT_DEV_NAME "thinkpad_screen"
4592
4593 enum {
4594 TP_EC_BACKLIGHT = 0x31,
4595
4596 /* TP_EC_BACKLIGHT bitmasks */
4597 TP_EC_BACKLIGHT_LVLMSK = 0x1F,
4598 TP_EC_BACKLIGHT_CMDMSK = 0xE0,
4599 TP_EC_BACKLIGHT_MAPSW = 0x20,
4600 };
4601
4602 static struct backlight_device *ibm_backlight_device;
4603 static int brightness_mode;
4604 static unsigned int brightness_enable = 2; /* 2 = auto, 0 = no, 1 = yes */
4605
4606 static struct mutex brightness_mutex;
4607
4608 /*
4609 * ThinkPads can read brightness from two places: EC 0x31, or
4610 * CMOS NVRAM byte 0x5E, bits 0-3.
4611 *
4612 * EC 0x31 has the following layout
4613 * Bit 7: unknown function
4614 * Bit 6: unknown function
4615 * Bit 5: Z: honour scale changes, NZ: ignore scale changes
4616 * Bit 4: must be set to zero to avoid problems
4617 * Bit 3-0: backlight brightness level
4618 *
4619 * brightness_get_raw returns status data in the EC 0x31 layout
4620 */
4621 static int brightness_get_raw(int *status)
4622 {
4623 u8 lec = 0, lcmos = 0, level = 0;
4624
4625 if (brightness_mode & 1) {
4626 if (!acpi_ec_read(TP_EC_BACKLIGHT, &lec))
4627 return -EIO;
4628 level = lec & TP_EC_BACKLIGHT_LVLMSK;
4629 };
4630 if (brightness_mode & 2) {
4631 lcmos = (nvram_read_byte(TP_NVRAM_ADDR_BRIGHTNESS)
4632 & TP_NVRAM_MASK_LEVEL_BRIGHTNESS)
4633 >> TP_NVRAM_POS_LEVEL_BRIGHTNESS;
4634 lcmos &= (tp_features.bright_16levels)? 0x0f : 0x07;
4635 level = lcmos;
4636 }
4637
4638 if (brightness_mode == 3) {
4639 *status = lec; /* Prefer EC, CMOS is just a backing store */
4640 lec &= TP_EC_BACKLIGHT_LVLMSK;
4641 if (lec == lcmos)
4642 tp_warned.bright_cmos_ec_unsync = 0;
4643 else {
4644 if (!tp_warned.bright_cmos_ec_unsync) {
4645 printk(TPACPI_ERR
4646 "CMOS NVRAM (%u) and EC (%u) do not "
4647 "agree on display brightness level\n",
4648 (unsigned int) lcmos,
4649 (unsigned int) lec);
4650 tp_warned.bright_cmos_ec_unsync = 1;
4651 }
4652 return -EIO;
4653 }
4654 } else {
4655 *status = level;
4656 }
4657
4658 return 0;
4659 }
4660
4661 /* May return EINTR which can always be mapped to ERESTARTSYS */
4662 static int brightness_set(int value)
4663 {
4664 int cmos_cmd, inc, i, res;
4665 int current_value;
4666 int command_bits;
4667
4668 if (value > ((tp_features.bright_16levels)? 15 : 7) ||
4669 value < 0)
4670 return -EINVAL;
4671
4672 res = mutex_lock_interruptible(&brightness_mutex);
4673 if (res < 0)
4674 return res;
4675
4676 res = brightness_get_raw(&current_value);
4677 if (res < 0)
4678 goto errout;
4679
4680 command_bits = current_value & TP_EC_BACKLIGHT_CMDMSK;
4681 current_value &= TP_EC_BACKLIGHT_LVLMSK;
4682
4683 cmos_cmd = value > current_value ?
4684 TP_CMOS_BRIGHTNESS_UP :
4685 TP_CMOS_BRIGHTNESS_DOWN;
4686 inc = (value > current_value)? 1 : -1;
4687
4688 res = 0;
4689 for (i = current_value; i != value; i += inc) {
4690 if ((brightness_mode & 2) &&
4691 issue_thinkpad_cmos_command(cmos_cmd)) {
4692 res = -EIO;
4693 goto errout;
4694 }
4695 if ((brightness_mode & 1) &&
4696 !acpi_ec_write(TP_EC_BACKLIGHT,
4697 (i + inc) | command_bits)) {
4698 res = -EIO;
4699 goto errout;;
4700 }
4701 }
4702
4703 errout:
4704 mutex_unlock(&brightness_mutex);
4705 return res;
4706 }
4707
4708 /* sysfs backlight class ----------------------------------------------- */
4709
4710 static int brightness_update_status(struct backlight_device *bd)
4711 {
4712 /* it is the backlight class's job (caller) to handle
4713 * EINTR and other errors properly */
4714 return brightness_set(
4715 (bd->props.fb_blank == FB_BLANK_UNBLANK &&
4716 bd->props.power == FB_BLANK_UNBLANK) ?
4717 bd->props.brightness : 0);
4718 }
4719
4720 static int brightness_get(struct backlight_device *bd)
4721 {
4722 int status, res;
4723
4724 res = brightness_get_raw(&status);
4725 if (res < 0)
4726 return 0; /* FIXME: teach backlight about error handling */
4727
4728 return status & TP_EC_BACKLIGHT_LVLMSK;
4729 }
4730
4731 static struct backlight_ops ibm_backlight_data = {
4732 .get_brightness = brightness_get,
4733 .update_status = brightness_update_status,
4734 };
4735
4736 /* --------------------------------------------------------------------- */
4737
4738 static int __init brightness_init(struct ibm_init_struct *iibm)
4739 {
4740 int b;
4741
4742 vdbg_printk(TPACPI_DBG_INIT, "initializing brightness subdriver\n");
4743
4744 mutex_init(&brightness_mutex);
4745
4746 /*
4747 * We always attempt to detect acpi support, so as to switch
4748 * Lenovo Vista BIOS to ACPI brightness mode even if we are not
4749 * going to publish a backlight interface
4750 */
4751 b = tpacpi_check_std_acpi_brightness_support();
4752 if (b > 0) {
4753 if (thinkpad_id.vendor == PCI_VENDOR_ID_LENOVO) {
4754 printk(TPACPI_NOTICE
4755 "Lenovo BIOS switched to ACPI backlight "
4756 "control mode\n");
4757 }
4758 if (brightness_enable > 1) {
4759 printk(TPACPI_NOTICE
4760 "standard ACPI backlight interface "
4761 "available, not loading native one...\n");
4762 return 1;
4763 }
4764 }
4765
4766 if (!brightness_enable) {
4767 dbg_printk(TPACPI_DBG_INIT,
4768 "brightness support disabled by "
4769 "module parameter\n");
4770 return 1;
4771 }
4772
4773 if (b > 16) {
4774 printk(TPACPI_ERR
4775 "Unsupported brightness interface, "
4776 "please contact %s\n", TPACPI_MAIL);
4777 return 1;
4778 }
4779 if (b == 16)
4780 tp_features.bright_16levels = 1;
4781
4782 if (!brightness_mode) {
4783 if (thinkpad_id.vendor == PCI_VENDOR_ID_LENOVO)
4784 brightness_mode = 2;
4785 else
4786 brightness_mode = 3;
4787
4788 dbg_printk(TPACPI_DBG_INIT, "selected brightness_mode=%d\n",
4789 brightness_mode);
4790 }
4791
4792 if (brightness_mode > 3)
4793 return -EINVAL;
4794
4795 if (brightness_get_raw(&b) < 0)
4796 return 1;
4797
4798 if (tp_features.bright_16levels)
4799 printk(TPACPI_INFO
4800 "detected a 16-level brightness capable ThinkPad\n");
4801
4802 ibm_backlight_device = backlight_device_register(
4803 TPACPI_BACKLIGHT_DEV_NAME, NULL, NULL,
4804 &ibm_backlight_data);
4805 if (IS_ERR(ibm_backlight_device)) {
4806 printk(TPACPI_ERR "Could not register backlight device\n");
4807 return PTR_ERR(ibm_backlight_device);
4808 }
4809 vdbg_printk(TPACPI_DBG_INIT, "brightness is supported\n");
4810
4811 ibm_backlight_device->props.max_brightness =
4812 (tp_features.bright_16levels)? 15 : 7;
4813 ibm_backlight_device->props.brightness = b & TP_EC_BACKLIGHT_LVLMSK;
4814 backlight_update_status(ibm_backlight_device);
4815
4816 return 0;
4817 }
4818
4819 static void brightness_exit(void)
4820 {
4821 if (ibm_backlight_device) {
4822 vdbg_printk(TPACPI_DBG_EXIT,
4823 "calling backlight_device_unregister()\n");
4824 backlight_device_unregister(ibm_backlight_device);
4825 }
4826 }
4827
4828 static int brightness_read(char *p)
4829 {
4830 int len = 0;
4831 int level;
4832
4833 level = brightness_get(NULL);
4834 if (level < 0) {
4835 len += sprintf(p + len, "level:\t\tunreadable\n");
4836 } else {
4837 len += sprintf(p + len, "level:\t\t%d\n", level);
4838 len += sprintf(p + len, "commands:\tup, down\n");
4839 len += sprintf(p + len, "commands:\tlevel <level>"
4840 " (<level> is 0-%d)\n",
4841 (tp_features.bright_16levels) ? 15 : 7);
4842 }
4843
4844 return len;
4845 }
4846
4847 static int brightness_write(char *buf)
4848 {
4849 int level;
4850 int rc;
4851 char *cmd;
4852 int max_level = (tp_features.bright_16levels) ? 15 : 7;
4853
4854 level = brightness_get(NULL);
4855 if (level < 0)
4856 return level;
4857
4858 while ((cmd = next_cmd(&buf))) {
4859 if (strlencmp(cmd, "up") == 0) {
4860 if (level < max_level)
4861 level++;
4862 } else if (strlencmp(cmd, "down") == 0) {
4863 if (level > 0)
4864 level--;
4865 } else if (sscanf(cmd, "level %d", &level) == 1 &&
4866 level >= 0 && level <= max_level) {
4867 /* new level set */
4868 } else
4869 return -EINVAL;
4870 }
4871
4872 /*
4873 * Now we know what the final level should be, so we try to set it.
4874 * Doing it this way makes the syscall restartable in case of EINTR
4875 */
4876 rc = brightness_set(level);
4877 return (rc == -EINTR)? ERESTARTSYS : rc;
4878 }
4879
4880 static struct ibm_struct brightness_driver_data = {
4881 .name = "brightness",
4882 .read = brightness_read,
4883 .write = brightness_write,
4884 .exit = brightness_exit,
4885 };
4886
4887 /*************************************************************************
4888 * Volume subdriver
4889 */
4890
4891 static int volume_offset = 0x30;
4892
4893 static int volume_read(char *p)
4894 {
4895 int len = 0;
4896 u8 level;
4897
4898 if (!acpi_ec_read(volume_offset, &level)) {
4899 len += sprintf(p + len, "level:\t\tunreadable\n");
4900 } else {
4901 len += sprintf(p + len, "level:\t\t%d\n", level & 0xf);
4902 len += sprintf(p + len, "mute:\t\t%s\n", onoff(level, 6));
4903 len += sprintf(p + len, "commands:\tup, down, mute\n");
4904 len += sprintf(p + len, "commands:\tlevel <level>"
4905 " (<level> is 0-15)\n");
4906 }
4907
4908 return len;
4909 }
4910
4911 static int volume_write(char *buf)
4912 {
4913 int cmos_cmd, inc, i;
4914 u8 level, mute;
4915 int new_level, new_mute;
4916 char *cmd;
4917
4918 while ((cmd = next_cmd(&buf))) {
4919 if (!acpi_ec_read(volume_offset, &level))
4920 return -EIO;
4921 new_mute = mute = level & 0x40;
4922 new_level = level = level & 0xf;
4923
4924 if (strlencmp(cmd, "up") == 0) {
4925 if (mute)
4926 new_mute = 0;
4927 else
4928 new_level = level == 15 ? 15 : level + 1;
4929 } else if (strlencmp(cmd, "down") == 0) {
4930 if (mute)
4931 new_mute = 0;
4932 else
4933 new_level = level == 0 ? 0 : level - 1;
4934 } else if (sscanf(cmd, "level %d", &new_level) == 1 &&
4935 new_level >= 0 && new_level <= 15) {
4936 /* new_level set */
4937 } else if (strlencmp(cmd, "mute") == 0) {
4938 new_mute = 0x40;
4939 } else
4940 return -EINVAL;
4941
4942 if (new_level != level) {
4943 /* mute doesn't change */
4944
4945 cmos_cmd = (new_level > level) ?
4946 TP_CMOS_VOLUME_UP : TP_CMOS_VOLUME_DOWN;
4947 inc = new_level > level ? 1 : -1;
4948
4949 if (mute && (issue_thinkpad_cmos_command(cmos_cmd) ||
4950 !acpi_ec_write(volume_offset, level)))
4951 return -EIO;
4952
4953 for (i = level; i != new_level; i += inc)
4954 if (issue_thinkpad_cmos_command(cmos_cmd) ||
4955 !acpi_ec_write(volume_offset, i + inc))
4956 return -EIO;
4957
4958 if (mute &&
4959 (issue_thinkpad_cmos_command(TP_CMOS_VOLUME_MUTE) ||
4960 !acpi_ec_write(volume_offset, new_level + mute))) {
4961 return -EIO;
4962 }
4963 }
4964
4965 if (new_mute != mute) {
4966 /* level doesn't change */
4967
4968 cmos_cmd = (new_mute) ?
4969 TP_CMOS_VOLUME_MUTE : TP_CMOS_VOLUME_UP;
4970
4971 if (issue_thinkpad_cmos_command(cmos_cmd) ||
4972 !acpi_ec_write(volume_offset, level + new_mute))
4973 return -EIO;
4974 }
4975 }
4976
4977 return 0;
4978 }
4979
4980 static struct ibm_struct volume_driver_data = {
4981 .name = "volume",
4982 .read = volume_read,
4983 .write = volume_write,
4984 };
4985
4986 /*************************************************************************
4987 * Fan subdriver
4988 */
4989
4990 /*
4991 * FAN ACCESS MODES
4992 *
4993 * TPACPI_FAN_RD_ACPI_GFAN:
4994 * ACPI GFAN method: returns fan level
4995 *
4996 * see TPACPI_FAN_WR_ACPI_SFAN
4997 * EC 0x2f (HFSP) not available if GFAN exists
4998 *
4999 * TPACPI_FAN_WR_ACPI_SFAN:
5000 * ACPI SFAN method: sets fan level, 0 (stop) to 7 (max)
5001 *
5002 * EC 0x2f (HFSP) might be available *for reading*, but do not use
5003 * it for writing.
5004 *
5005 * TPACPI_FAN_WR_TPEC:
5006 * ThinkPad EC register 0x2f (HFSP): fan control loop mode
5007 * Supported on almost all ThinkPads
5008 *
5009 * Fan speed changes of any sort (including those caused by the
5010 * disengaged mode) are usually done slowly by the firmware as the
5011 * maximum ammount of fan duty cycle change per second seems to be
5012 * limited.
5013 *
5014 * Reading is not available if GFAN exists.
5015 * Writing is not available if SFAN exists.
5016 *
5017 * Bits
5018 * 7 automatic mode engaged;
5019 * (default operation mode of the ThinkPad)
5020 * fan level is ignored in this mode.
5021 * 6 full speed mode (takes precedence over bit 7);
5022 * not available on all thinkpads. May disable
5023 * the tachometer while the fan controller ramps up
5024 * the speed (which can take up to a few *minutes*).
5025 * Speeds up fan to 100% duty-cycle, which is far above
5026 * the standard RPM levels. It is not impossible that
5027 * it could cause hardware damage.
5028 * 5-3 unused in some models. Extra bits for fan level
5029 * in others, but still useless as all values above
5030 * 7 map to the same speed as level 7 in these models.
5031 * 2-0 fan level (0..7 usually)
5032 * 0x00 = stop
5033 * 0x07 = max (set when temperatures critical)
5034 * Some ThinkPads may have other levels, see
5035 * TPACPI_FAN_WR_ACPI_FANS (X31/X40/X41)
5036 *
5037 * FIRMWARE BUG: on some models, EC 0x2f might not be initialized at
5038 * boot. Apparently the EC does not intialize it, so unless ACPI DSDT
5039 * does so, its initial value is meaningless (0x07).
5040 *
5041 * For firmware bugs, refer to:
5042 * http://thinkwiki.org/wiki/Embedded_Controller_Firmware#Firmware_Issues
5043 *
5044 * ----
5045 *
5046 * ThinkPad EC register 0x84 (LSB), 0x85 (MSB):
5047 * Main fan tachometer reading (in RPM)
5048 *
5049 * This register is present on all ThinkPads with a new-style EC, and
5050 * it is known not to be present on the A21m/e, and T22, as there is
5051 * something else in offset 0x84 according to the ACPI DSDT. Other
5052 * ThinkPads from this same time period (and earlier) probably lack the
5053 * tachometer as well.
5054 *
5055 * Unfortunately a lot of ThinkPads with new-style ECs but whose firwmare
5056 * was never fixed by IBM to report the EC firmware version string
5057 * probably support the tachometer (like the early X models), so
5058 * detecting it is quite hard. We need more data to know for sure.
5059 *
5060 * FIRMWARE BUG: always read 0x84 first, otherwise incorrect readings
5061 * might result.
5062 *
5063 * FIRMWARE BUG: may go stale while the EC is switching to full speed
5064 * mode.
5065 *
5066 * For firmware bugs, refer to:
5067 * http://thinkwiki.org/wiki/Embedded_Controller_Firmware#Firmware_Issues
5068 *
5069 * TPACPI_FAN_WR_ACPI_FANS:
5070 * ThinkPad X31, X40, X41. Not available in the X60.
5071 *
5072 * FANS ACPI handle: takes three arguments: low speed, medium speed,
5073 * high speed. ACPI DSDT seems to map these three speeds to levels
5074 * as follows: STOP LOW LOW MED MED HIGH HIGH HIGH HIGH
5075 * (this map is stored on FAN0..FAN8 as "0,1,1,2,2,3,3,3,3")
5076 *
5077 * The speeds are stored on handles
5078 * (FANA:FAN9), (FANC:FANB), (FANE:FAND).
5079 *
5080 * There are three default speed sets, acessible as handles:
5081 * FS1L,FS1M,FS1H; FS2L,FS2M,FS2H; FS3L,FS3M,FS3H
5082 *
5083 * ACPI DSDT switches which set is in use depending on various
5084 * factors.
5085 *
5086 * TPACPI_FAN_WR_TPEC is also available and should be used to
5087 * command the fan. The X31/X40/X41 seems to have 8 fan levels,
5088 * but the ACPI tables just mention level 7.
5089 */
5090
5091 enum { /* Fan control constants */
5092 fan_status_offset = 0x2f, /* EC register 0x2f */
5093 fan_rpm_offset = 0x84, /* EC register 0x84: LSB, 0x85 MSB (RPM)
5094 * 0x84 must be read before 0x85 */
5095
5096 TP_EC_FAN_FULLSPEED = 0x40, /* EC fan mode: full speed */
5097 TP_EC_FAN_AUTO = 0x80, /* EC fan mode: auto fan control */
5098
5099 TPACPI_FAN_LAST_LEVEL = 0x100, /* Use cached last-seen fan level */
5100 };
5101
5102 enum fan_status_access_mode {
5103 TPACPI_FAN_NONE = 0, /* No fan status or control */
5104 TPACPI_FAN_RD_ACPI_GFAN, /* Use ACPI GFAN */
5105 TPACPI_FAN_RD_TPEC, /* Use ACPI EC regs 0x2f, 0x84-0x85 */
5106 };
5107
5108 enum fan_control_access_mode {
5109 TPACPI_FAN_WR_NONE = 0, /* No fan control */
5110 TPACPI_FAN_WR_ACPI_SFAN, /* Use ACPI SFAN */
5111 TPACPI_FAN_WR_TPEC, /* Use ACPI EC reg 0x2f */
5112 TPACPI_FAN_WR_ACPI_FANS, /* Use ACPI FANS and EC reg 0x2f */
5113 };
5114
5115 enum fan_control_commands {
5116 TPACPI_FAN_CMD_SPEED = 0x0001, /* speed command */
5117 TPACPI_FAN_CMD_LEVEL = 0x0002, /* level command */
5118 TPACPI_FAN_CMD_ENABLE = 0x0004, /* enable/disable cmd,
5119 * and also watchdog cmd */
5120 };
5121
5122 static int fan_control_allowed;
5123
5124 static enum fan_status_access_mode fan_status_access_mode;
5125 static enum fan_control_access_mode fan_control_access_mode;
5126 static enum fan_control_commands fan_control_commands;
5127
5128 static u8 fan_control_initial_status;
5129 static u8 fan_control_desired_level;
5130 static int fan_watchdog_maxinterval;
5131
5132 static struct mutex fan_mutex;
5133
5134 static void fan_watchdog_fire(struct work_struct *ignored);
5135 static DECLARE_DELAYED_WORK(fan_watchdog_task, fan_watchdog_fire);
5136
5137 TPACPI_HANDLE(fans, ec, "FANS"); /* X31, X40, X41 */
5138 TPACPI_HANDLE(gfan, ec, "GFAN", /* 570 */
5139 "\\FSPD", /* 600e/x, 770e, 770x */
5140 ); /* all others */
5141 TPACPI_HANDLE(sfan, ec, "SFAN", /* 570 */
5142 "JFNS", /* 770x-JL */
5143 ); /* all others */
5144
5145 /*
5146 * Call with fan_mutex held
5147 */
5148 static void fan_update_desired_level(u8 status)
5149 {
5150 if ((status &
5151 (TP_EC_FAN_AUTO | TP_EC_FAN_FULLSPEED)) == 0) {
5152 if (status > 7)
5153 fan_control_desired_level = 7;
5154 else
5155 fan_control_desired_level = status;
5156 }
5157 }
5158
5159 static int fan_get_status(u8 *status)
5160 {
5161 u8 s;
5162
5163 /* TODO:
5164 * Add TPACPI_FAN_RD_ACPI_FANS ? */
5165
5166 switch (fan_status_access_mode) {
5167 case TPACPI_FAN_RD_ACPI_GFAN:
5168 /* 570, 600e/x, 770e, 770x */
5169
5170 if (unlikely(!acpi_evalf(gfan_handle, &s, NULL, "d")))
5171 return -EIO;
5172
5173 if (likely(status))
5174 *status = s & 0x07;
5175
5176 break;
5177
5178 case TPACPI_FAN_RD_TPEC:
5179 /* all except 570, 600e/x, 770e, 770x */
5180 if (unlikely(!acpi_ec_read(fan_status_offset, &s)))
5181 return -EIO;
5182
5183 if (likely(status))
5184 *status = s;
5185
5186 break;
5187
5188 default:
5189 return -ENXIO;
5190 }
5191
5192 return 0;
5193 }
5194
5195 static int fan_get_status_safe(u8 *status)
5196 {
5197 int rc;
5198 u8 s;
5199
5200 if (mutex_lock_interruptible(&fan_mutex))
5201 return -ERESTARTSYS;
5202 rc = fan_get_status(&s);
5203 if (!rc)
5204 fan_update_desired_level(s);
5205 mutex_unlock(&fan_mutex);
5206
5207 if (status)
5208 *status = s;
5209
5210 return rc;
5211 }
5212
5213 static int fan_get_speed(unsigned int *speed)
5214 {
5215 u8 hi, lo;
5216
5217 switch (fan_status_access_mode) {
5218 case TPACPI_FAN_RD_TPEC:
5219 /* all except 570, 600e/x, 770e, 770x */
5220 if (unlikely(!acpi_ec_read(fan_rpm_offset, &lo) ||
5221 !acpi_ec_read(fan_rpm_offset + 1, &hi)))
5222 return -EIO;
5223
5224 if (likely(speed))
5225 *speed = (hi << 8) | lo;
5226
5227 break;
5228
5229 default:
5230 return -ENXIO;
5231 }
5232
5233 return 0;
5234 }
5235
5236 static int fan_set_level(int level)
5237 {
5238 if (!fan_control_allowed)
5239 return -EPERM;
5240
5241 switch (fan_control_access_mode) {
5242 case TPACPI_FAN_WR_ACPI_SFAN:
5243 if (level >= 0 && level <= 7) {
5244 if (!acpi_evalf(sfan_handle, NULL, NULL, "vd", level))
5245 return -EIO;
5246 } else
5247 return -EINVAL;
5248 break;
5249
5250 case TPACPI_FAN_WR_ACPI_FANS:
5251 case TPACPI_FAN_WR_TPEC:
5252 if ((level != TP_EC_FAN_AUTO) &&
5253 (level != TP_EC_FAN_FULLSPEED) &&
5254 ((level < 0) || (level > 7)))
5255 return -EINVAL;
5256
5257 /* safety net should the EC not support AUTO
5258 * or FULLSPEED mode bits and just ignore them */
5259 if (level & TP_EC_FAN_FULLSPEED)
5260 level |= 7; /* safety min speed 7 */
5261 else if (level & TP_EC_FAN_AUTO)
5262 level |= 4; /* safety min speed 4 */
5263
5264 if (!acpi_ec_write(fan_status_offset, level))
5265 return -EIO;
5266 else
5267 tp_features.fan_ctrl_status_undef = 0;
5268 break;
5269
5270 default:
5271 return -ENXIO;
5272 }
5273 return 0;
5274 }
5275
5276 static int fan_set_level_safe(int level)
5277 {
5278 int rc;
5279
5280 if (!fan_control_allowed)
5281 return -EPERM;
5282
5283 if (mutex_lock_interruptible(&fan_mutex))
5284 return -ERESTARTSYS;
5285
5286 if (level == TPACPI_FAN_LAST_LEVEL)
5287 level = fan_control_desired_level;
5288
5289 rc = fan_set_level(level);
5290 if (!rc)
5291 fan_update_desired_level(level);
5292
5293 mutex_unlock(&fan_mutex);
5294 return rc;
5295 }
5296
5297 static int fan_set_enable(void)
5298 {
5299 u8 s;
5300 int rc;
5301
5302 if (!fan_control_allowed)
5303 return -EPERM;
5304
5305 if (mutex_lock_interruptible(&fan_mutex))
5306 return -ERESTARTSYS;
5307
5308 switch (fan_control_access_mode) {
5309 case TPACPI_FAN_WR_ACPI_FANS:
5310 case TPACPI_FAN_WR_TPEC:
5311 rc = fan_get_status(&s);
5312 if (rc < 0)
5313 break;
5314
5315 /* Don't go out of emergency fan mode */
5316 if (s != 7) {
5317 s &= 0x07;
5318 s |= TP_EC_FAN_AUTO | 4; /* min fan speed 4 */
5319 }
5320
5321 if (!acpi_ec_write(fan_status_offset, s))
5322 rc = -EIO;
5323 else {
5324 tp_features.fan_ctrl_status_undef = 0;
5325 rc = 0;
5326 }
5327 break;
5328
5329 case TPACPI_FAN_WR_ACPI_SFAN:
5330 rc = fan_get_status(&s);
5331 if (rc < 0)
5332 break;
5333
5334 s &= 0x07;
5335
5336 /* Set fan to at least level 4 */
5337 s |= 4;
5338
5339 if (!acpi_evalf(sfan_handle, NULL, NULL, "vd", s))
5340 rc = -EIO;
5341 else
5342 rc = 0;
5343 break;
5344
5345 default:
5346 rc = -ENXIO;
5347 }
5348
5349 mutex_unlock(&fan_mutex);
5350 return rc;
5351 }
5352
5353 static int fan_set_disable(void)
5354 {
5355 int rc;
5356
5357 if (!fan_control_allowed)
5358 return -EPERM;
5359
5360 if (mutex_lock_interruptible(&fan_mutex))
5361 return -ERESTARTSYS;
5362
5363 rc = 0;
5364 switch (fan_control_access_mode) {
5365 case TPACPI_FAN_WR_ACPI_FANS:
5366 case TPACPI_FAN_WR_TPEC:
5367 if (!acpi_ec_write(fan_status_offset, 0x00))
5368 rc = -EIO;
5369 else {
5370 fan_control_desired_level = 0;
5371 tp_features.fan_ctrl_status_undef = 0;
5372 }
5373 break;
5374
5375 case TPACPI_FAN_WR_ACPI_SFAN:
5376 if (!acpi_evalf(sfan_handle, NULL, NULL, "vd", 0x00))
5377 rc = -EIO;
5378 else
5379 fan_control_desired_level = 0;
5380 break;
5381
5382 default:
5383 rc = -ENXIO;
5384 }
5385
5386
5387 mutex_unlock(&fan_mutex);
5388 return rc;
5389 }
5390
5391 static int fan_set_speed(int speed)
5392 {
5393 int rc;
5394
5395 if (!fan_control_allowed)
5396 return -EPERM;
5397
5398 if (mutex_lock_interruptible(&fan_mutex))
5399 return -ERESTARTSYS;
5400
5401 rc = 0;
5402 switch (fan_control_access_mode) {
5403 case TPACPI_FAN_WR_ACPI_FANS:
5404 if (speed >= 0 && speed <= 65535) {
5405 if (!acpi_evalf(fans_handle, NULL, NULL, "vddd",
5406 speed, speed, speed))
5407 rc = -EIO;
5408 } else
5409 rc = -EINVAL;
5410 break;
5411
5412 default:
5413 rc = -ENXIO;
5414 }
5415
5416 mutex_unlock(&fan_mutex);
5417 return rc;
5418 }
5419
5420 static void fan_watchdog_reset(void)
5421 {
5422 static int fan_watchdog_active;
5423
5424 if (fan_control_access_mode == TPACPI_FAN_WR_NONE)
5425 return;
5426
5427 if (fan_watchdog_active)
5428 cancel_delayed_work(&fan_watchdog_task);
5429
5430 if (fan_watchdog_maxinterval > 0 &&
5431 tpacpi_lifecycle != TPACPI_LIFE_EXITING) {
5432 fan_watchdog_active = 1;
5433 if (!queue_delayed_work(tpacpi_wq, &fan_watchdog_task,
5434 msecs_to_jiffies(fan_watchdog_maxinterval
5435 * 1000))) {
5436 printk(TPACPI_ERR
5437 "failed to queue the fan watchdog, "
5438 "watchdog will not trigger\n");
5439 }
5440 } else
5441 fan_watchdog_active = 0;
5442 }
5443
5444 static void fan_watchdog_fire(struct work_struct *ignored)
5445 {
5446 int rc;
5447
5448 if (tpacpi_lifecycle != TPACPI_LIFE_RUNNING)
5449 return;
5450
5451 printk(TPACPI_NOTICE "fan watchdog: enabling fan\n");
5452 rc = fan_set_enable();
5453 if (rc < 0) {
5454 printk(TPACPI_ERR "fan watchdog: error %d while enabling fan, "
5455 "will try again later...\n", -rc);
5456 /* reschedule for later */
5457 fan_watchdog_reset();
5458 }
5459 }
5460
5461 /*
5462 * SYSFS fan layout: hwmon compatible (device)
5463 *
5464 * pwm*_enable:
5465 * 0: "disengaged" mode
5466 * 1: manual mode
5467 * 2: native EC "auto" mode (recommended, hardware default)
5468 *
5469 * pwm*: set speed in manual mode, ignored otherwise.
5470 * 0 is level 0; 255 is level 7. Intermediate points done with linear
5471 * interpolation.
5472 *
5473 * fan*_input: tachometer reading, RPM
5474 *
5475 *
5476 * SYSFS fan layout: extensions
5477 *
5478 * fan_watchdog (driver):
5479 * fan watchdog interval in seconds, 0 disables (default), max 120
5480 */
5481
5482 /* sysfs fan pwm1_enable ----------------------------------------------- */
5483 static ssize_t fan_pwm1_enable_show(struct device *dev,
5484 struct device_attribute *attr,
5485 char *buf)
5486 {
5487 int res, mode;
5488 u8 status;
5489
5490 res = fan_get_status_safe(&status);
5491 if (res)
5492 return res;
5493
5494 if (unlikely(tp_features.fan_ctrl_status_undef)) {
5495 if (status != fan_control_initial_status) {
5496 tp_features.fan_ctrl_status_undef = 0;
5497 } else {
5498 /* Return most likely status. In fact, it
5499 * might be the only possible status */
5500 status = TP_EC_FAN_AUTO;
5501 }
5502 }
5503
5504 if (status & TP_EC_FAN_FULLSPEED) {
5505 mode = 0;
5506 } else if (status & TP_EC_FAN_AUTO) {
5507 mode = 2;
5508 } else
5509 mode = 1;
5510
5511 return snprintf(buf, PAGE_SIZE, "%d\n", mode);
5512 }
5513
5514 static ssize_t fan_pwm1_enable_store(struct device *dev,
5515 struct device_attribute *attr,
5516 const char *buf, size_t count)
5517 {
5518 unsigned long t;
5519 int res, level;
5520
5521 if (parse_strtoul(buf, 2, &t))
5522 return -EINVAL;
5523
5524 switch (t) {
5525 case 0:
5526 level = TP_EC_FAN_FULLSPEED;
5527 break;
5528 case 1:
5529 level = TPACPI_FAN_LAST_LEVEL;
5530 break;
5531 case 2:
5532 level = TP_EC_FAN_AUTO;
5533 break;
5534 case 3:
5535 /* reserved for software-controlled auto mode */
5536 return -ENOSYS;
5537 default:
5538 return -EINVAL;
5539 }
5540
5541 res = fan_set_level_safe(level);
5542 if (res == -ENXIO)
5543 return -EINVAL;
5544 else if (res < 0)
5545 return res;
5546
5547 fan_watchdog_reset();
5548
5549 return count;
5550 }
5551
5552 static struct device_attribute dev_attr_fan_pwm1_enable =
5553 __ATTR(pwm1_enable, S_IWUSR | S_IRUGO,
5554 fan_pwm1_enable_show, fan_pwm1_enable_store);
5555
5556 /* sysfs fan pwm1 ------------------------------------------------------ */
5557 static ssize_t fan_pwm1_show(struct device *dev,
5558 struct device_attribute *attr,
5559 char *buf)
5560 {
5561 int res;
5562 u8 status;
5563
5564 res = fan_get_status_safe(&status);
5565 if (res)
5566 return res;
5567
5568 if (unlikely(tp_features.fan_ctrl_status_undef)) {
5569 if (status != fan_control_initial_status) {
5570 tp_features.fan_ctrl_status_undef = 0;
5571 } else {
5572 status = TP_EC_FAN_AUTO;
5573 }
5574 }
5575
5576 if ((status &
5577 (TP_EC_FAN_AUTO | TP_EC_FAN_FULLSPEED)) != 0)
5578 status = fan_control_desired_level;
5579
5580 if (status > 7)
5581 status = 7;
5582
5583 return snprintf(buf, PAGE_SIZE, "%u\n", (status * 255) / 7);
5584 }
5585
5586 static ssize_t fan_pwm1_store(struct device *dev,
5587 struct device_attribute *attr,
5588 const char *buf, size_t count)
5589 {
5590 unsigned long s;
5591 int rc;
5592 u8 status, newlevel;
5593
5594 if (parse_strtoul(buf, 255, &s))
5595 return -EINVAL;
5596
5597 /* scale down from 0-255 to 0-7 */
5598 newlevel = (s >> 5) & 0x07;
5599
5600 if (mutex_lock_interruptible(&fan_mutex))
5601 return -ERESTARTSYS;
5602
5603 rc = fan_get_status(&status);
5604 if (!rc && (status &
5605 (TP_EC_FAN_AUTO | TP_EC_FAN_FULLSPEED)) == 0) {
5606 rc = fan_set_level(newlevel);
5607 if (rc == -ENXIO)
5608 rc = -EINVAL;
5609 else if (!rc) {
5610 fan_update_desired_level(newlevel);
5611 fan_watchdog_reset();
5612 }
5613 }
5614
5615 mutex_unlock(&fan_mutex);
5616 return (rc)? rc : count;
5617 }
5618
5619 static struct device_attribute dev_attr_fan_pwm1 =
5620 __ATTR(pwm1, S_IWUSR | S_IRUGO,
5621 fan_pwm1_show, fan_pwm1_store);
5622
5623 /* sysfs fan fan1_input ------------------------------------------------ */
5624 static ssize_t fan_fan1_input_show(struct device *dev,
5625 struct device_attribute *attr,
5626 char *buf)
5627 {
5628 int res;
5629 unsigned int speed;
5630
5631 res = fan_get_speed(&speed);
5632 if (res < 0)
5633 return res;
5634
5635 return snprintf(buf, PAGE_SIZE, "%u\n", speed);
5636 }
5637
5638 static struct device_attribute dev_attr_fan_fan1_input =
5639 __ATTR(fan1_input, S_IRUGO,
5640 fan_fan1_input_show, NULL);
5641
5642 /* sysfs fan fan_watchdog (hwmon driver) ------------------------------- */
5643 static ssize_t fan_fan_watchdog_show(struct device_driver *drv,
5644 char *buf)
5645 {
5646 return snprintf(buf, PAGE_SIZE, "%u\n", fan_watchdog_maxinterval);
5647 }
5648
5649 static ssize_t fan_fan_watchdog_store(struct device_driver *drv,
5650 const char *buf, size_t count)
5651 {
5652 unsigned long t;
5653
5654 if (parse_strtoul(buf, 120, &t))
5655 return -EINVAL;
5656
5657 if (!fan_control_allowed)
5658 return -EPERM;
5659
5660 fan_watchdog_maxinterval = t;
5661 fan_watchdog_reset();
5662
5663 return count;
5664 }
5665
5666 static DRIVER_ATTR(fan_watchdog, S_IWUSR | S_IRUGO,
5667 fan_fan_watchdog_show, fan_fan_watchdog_store);
5668
5669 /* --------------------------------------------------------------------- */
5670 static struct attribute *fan_attributes[] = {
5671 &dev_attr_fan_pwm1_enable.attr, &dev_attr_fan_pwm1.attr,
5672 &dev_attr_fan_fan1_input.attr,
5673 NULL
5674 };
5675
5676 static const struct attribute_group fan_attr_group = {
5677 .attrs = fan_attributes,
5678 };
5679
5680 static int __init fan_init(struct ibm_init_struct *iibm)
5681 {
5682 int rc;
5683
5684 vdbg_printk(TPACPI_DBG_INIT, "initializing fan subdriver\n");
5685
5686 mutex_init(&fan_mutex);
5687 fan_status_access_mode = TPACPI_FAN_NONE;
5688 fan_control_access_mode = TPACPI_FAN_WR_NONE;
5689 fan_control_commands = 0;
5690 fan_watchdog_maxinterval = 0;
5691 tp_features.fan_ctrl_status_undef = 0;
5692 fan_control_desired_level = 7;
5693
5694 TPACPI_ACPIHANDLE_INIT(fans);
5695 TPACPI_ACPIHANDLE_INIT(gfan);
5696 TPACPI_ACPIHANDLE_INIT(sfan);
5697
5698 if (gfan_handle) {
5699 /* 570, 600e/x, 770e, 770x */
5700 fan_status_access_mode = TPACPI_FAN_RD_ACPI_GFAN;
5701 } else {
5702 /* all other ThinkPads: note that even old-style
5703 * ThinkPad ECs supports the fan control register */
5704 if (likely(acpi_ec_read(fan_status_offset,
5705 &fan_control_initial_status))) {
5706 fan_status_access_mode = TPACPI_FAN_RD_TPEC;
5707
5708 /* In some ThinkPads, neither the EC nor the ACPI
5709 * DSDT initialize the fan status, and it ends up
5710 * being set to 0x07 when it *could* be either
5711 * 0x07 or 0x80.
5712 *
5713 * Enable for TP-1Y (T43), TP-78 (R51e),
5714 * TP-76 (R52), TP-70 (T43, R52), which are known
5715 * to be buggy. */
5716 if (fan_control_initial_status == 0x07) {
5717 switch (thinkpad_id.ec_model) {
5718 case 0x5931: /* TP-1Y */
5719 case 0x3837: /* TP-78 */
5720 case 0x3637: /* TP-76 */
5721 case 0x3037: /* TP-70 */
5722 printk(TPACPI_NOTICE
5723 "fan_init: initial fan status "
5724 "is unknown, assuming it is "
5725 "in auto mode\n");
5726 tp_features.fan_ctrl_status_undef = 1;
5727 ;;
5728 }
5729 }
5730 } else {
5731 printk(TPACPI_ERR
5732 "ThinkPad ACPI EC access misbehaving, "
5733 "fan status and control unavailable\n");
5734 return 1;
5735 }
5736 }
5737
5738 if (sfan_handle) {
5739 /* 570, 770x-JL */
5740 fan_control_access_mode = TPACPI_FAN_WR_ACPI_SFAN;
5741 fan_control_commands |=
5742 TPACPI_FAN_CMD_LEVEL | TPACPI_FAN_CMD_ENABLE;
5743 } else {
5744 if (!gfan_handle) {
5745 /* gfan without sfan means no fan control */
5746 /* all other models implement TP EC 0x2f control */
5747
5748 if (fans_handle) {
5749 /* X31, X40, X41 */
5750 fan_control_access_mode =
5751 TPACPI_FAN_WR_ACPI_FANS;
5752 fan_control_commands |=
5753 TPACPI_FAN_CMD_SPEED |
5754 TPACPI_FAN_CMD_LEVEL |
5755 TPACPI_FAN_CMD_ENABLE;
5756 } else {
5757 fan_control_access_mode = TPACPI_FAN_WR_TPEC;
5758 fan_control_commands |=
5759 TPACPI_FAN_CMD_LEVEL |
5760 TPACPI_FAN_CMD_ENABLE;
5761 }
5762 }
5763 }
5764
5765 vdbg_printk(TPACPI_DBG_INIT, "fan is %s, modes %d, %d\n",
5766 str_supported(fan_status_access_mode != TPACPI_FAN_NONE ||
5767 fan_control_access_mode != TPACPI_FAN_WR_NONE),
5768 fan_status_access_mode, fan_control_access_mode);
5769
5770 /* fan control master switch */
5771 if (!fan_control_allowed) {
5772 fan_control_access_mode = TPACPI_FAN_WR_NONE;
5773 fan_control_commands = 0;
5774 dbg_printk(TPACPI_DBG_INIT,
5775 "fan control features disabled by parameter\n");
5776 }
5777
5778 /* update fan_control_desired_level */
5779 if (fan_status_access_mode != TPACPI_FAN_NONE)
5780 fan_get_status_safe(NULL);
5781
5782 if (fan_status_access_mode != TPACPI_FAN_NONE ||
5783 fan_control_access_mode != TPACPI_FAN_WR_NONE) {
5784 rc = sysfs_create_group(&tpacpi_sensors_pdev->dev.kobj,
5785 &fan_attr_group);
5786 if (rc < 0)
5787 return rc;
5788
5789 rc = driver_create_file(&tpacpi_hwmon_pdriver.driver,
5790 &driver_attr_fan_watchdog);
5791 if (rc < 0) {
5792 sysfs_remove_group(&tpacpi_sensors_pdev->dev.kobj,
5793 &fan_attr_group);
5794 return rc;
5795 }
5796 return 0;
5797 } else
5798 return 1;
5799 }
5800
5801 static void fan_exit(void)
5802 {
5803 vdbg_printk(TPACPI_DBG_EXIT,
5804 "cancelling any pending fan watchdog tasks\n");
5805
5806 /* FIXME: can we really do this unconditionally? */
5807 sysfs_remove_group(&tpacpi_sensors_pdev->dev.kobj, &fan_attr_group);
5808 driver_remove_file(&tpacpi_hwmon_pdriver.driver,
5809 &driver_attr_fan_watchdog);
5810
5811 cancel_delayed_work(&fan_watchdog_task);
5812 flush_workqueue(tpacpi_wq);
5813 }
5814
5815 static int fan_read(char *p)
5816 {
5817 int len = 0;
5818 int rc;
5819 u8 status;
5820 unsigned int speed = 0;
5821
5822 switch (fan_status_access_mode) {
5823 case TPACPI_FAN_RD_ACPI_GFAN:
5824 /* 570, 600e/x, 770e, 770x */
5825 rc = fan_get_status_safe(&status);
5826 if (rc < 0)
5827 return rc;
5828
5829 len += sprintf(p + len, "status:\t\t%s\n"
5830 "level:\t\t%d\n",
5831 (status != 0) ? "enabled" : "disabled", status);
5832 break;
5833
5834 case TPACPI_FAN_RD_TPEC:
5835 /* all except 570, 600e/x, 770e, 770x */
5836 rc = fan_get_status_safe(&status);
5837 if (rc < 0)
5838 return rc;
5839
5840 if (unlikely(tp_features.fan_ctrl_status_undef)) {
5841 if (status != fan_control_initial_status)
5842 tp_features.fan_ctrl_status_undef = 0;
5843 else
5844 /* Return most likely status. In fact, it
5845 * might be the only possible status */
5846 status = TP_EC_FAN_AUTO;
5847 }
5848
5849 len += sprintf(p + len, "status:\t\t%s\n",
5850 (status != 0) ? "enabled" : "disabled");
5851
5852 rc = fan_get_speed(&speed);
5853 if (rc < 0)
5854 return rc;
5855
5856 len += sprintf(p + len, "speed:\t\t%d\n", speed);
5857
5858 if (status & TP_EC_FAN_FULLSPEED)
5859 /* Disengaged mode takes precedence */
5860 len += sprintf(p + len, "level:\t\tdisengaged\n");
5861 else if (status & TP_EC_FAN_AUTO)
5862 len += sprintf(p + len, "level:\t\tauto\n");
5863 else
5864 len += sprintf(p + len, "level:\t\t%d\n", status);
5865 break;
5866
5867 case TPACPI_FAN_NONE:
5868 default:
5869 len += sprintf(p + len, "status:\t\tnot supported\n");
5870 }
5871
5872 if (fan_control_commands & TPACPI_FAN_CMD_LEVEL) {
5873 len += sprintf(p + len, "commands:\tlevel <level>");
5874
5875 switch (fan_control_access_mode) {
5876 case TPACPI_FAN_WR_ACPI_SFAN:
5877 len += sprintf(p + len, " (<level> is 0-7)\n");
5878 break;
5879
5880 default:
5881 len += sprintf(p + len, " (<level> is 0-7, "
5882 "auto, disengaged, full-speed)\n");
5883 break;
5884 }
5885 }
5886
5887 if (fan_control_commands & TPACPI_FAN_CMD_ENABLE)
5888 len += sprintf(p + len, "commands:\tenable, disable\n"
5889 "commands:\twatchdog <timeout> (<timeout> "
5890 "is 0 (off), 1-120 (seconds))\n");
5891
5892 if (fan_control_commands & TPACPI_FAN_CMD_SPEED)
5893 len += sprintf(p + len, "commands:\tspeed <speed>"
5894 " (<speed> is 0-65535)\n");
5895
5896 return len;
5897 }
5898
5899 static int fan_write_cmd_level(const char *cmd, int *rc)
5900 {
5901 int level;
5902
5903 if (strlencmp(cmd, "level auto") == 0)
5904 level = TP_EC_FAN_AUTO;
5905 else if ((strlencmp(cmd, "level disengaged") == 0) |
5906 (strlencmp(cmd, "level full-speed") == 0))
5907 level = TP_EC_FAN_FULLSPEED;
5908 else if (sscanf(cmd, "level %d", &level) != 1)
5909 return 0;
5910
5911 *rc = fan_set_level_safe(level);
5912 if (*rc == -ENXIO)
5913 printk(TPACPI_ERR "level command accepted for unsupported "
5914 "access mode %d", fan_control_access_mode);
5915
5916 return 1;
5917 }
5918
5919 static int fan_write_cmd_enable(const char *cmd, int *rc)
5920 {
5921 if (strlencmp(cmd, "enable") != 0)
5922 return 0;
5923
5924 *rc = fan_set_enable();
5925 if (*rc == -ENXIO)
5926 printk(TPACPI_ERR "enable command accepted for unsupported "
5927 "access mode %d", fan_control_access_mode);
5928
5929 return 1;
5930 }
5931
5932 static int fan_write_cmd_disable(const char *cmd, int *rc)
5933 {
5934 if (strlencmp(cmd, "disable") != 0)
5935 return 0;
5936
5937 *rc = fan_set_disable();
5938 if (*rc == -ENXIO)
5939 printk(TPACPI_ERR "disable command accepted for unsupported "
5940 "access mode %d", fan_control_access_mode);
5941
5942 return 1;
5943 }
5944
5945 static int fan_write_cmd_speed(const char *cmd, int *rc)
5946 {
5947 int speed;
5948
5949 /* TODO:
5950 * Support speed <low> <medium> <high> ? */
5951
5952 if (sscanf(cmd, "speed %d", &speed) != 1)
5953 return 0;
5954
5955 *rc = fan_set_speed(speed);
5956 if (*rc == -ENXIO)
5957 printk(TPACPI_ERR "speed command accepted for unsupported "
5958 "access mode %d", fan_control_access_mode);
5959
5960 return 1;
5961 }
5962
5963 static int fan_write_cmd_watchdog(const char *cmd, int *rc)
5964 {
5965 int interval;
5966
5967 if (sscanf(cmd, "watchdog %d", &interval) != 1)
5968 return 0;
5969
5970 if (interval < 0 || interval > 120)
5971 *rc = -EINVAL;
5972 else
5973 fan_watchdog_maxinterval = interval;
5974
5975 return 1;
5976 }
5977
5978 static int fan_write(char *buf)
5979 {
5980 char *cmd;
5981 int rc = 0;
5982
5983 while (!rc && (cmd = next_cmd(&buf))) {
5984 if (!((fan_control_commands & TPACPI_FAN_CMD_LEVEL) &&
5985 fan_write_cmd_level(cmd, &rc)) &&
5986 !((fan_control_commands & TPACPI_FAN_CMD_ENABLE) &&
5987 (fan_write_cmd_enable(cmd, &rc) ||
5988 fan_write_cmd_disable(cmd, &rc) ||
5989 fan_write_cmd_watchdog(cmd, &rc))) &&
5990 !((fan_control_commands & TPACPI_FAN_CMD_SPEED) &&
5991 fan_write_cmd_speed(cmd, &rc))
5992 )
5993 rc = -EINVAL;
5994 else if (!rc)
5995 fan_watchdog_reset();
5996 }
5997
5998 return rc;
5999 }
6000
6001 static struct ibm_struct fan_driver_data = {
6002 .name = "fan",
6003 .read = fan_read,
6004 .write = fan_write,
6005 .exit = fan_exit,
6006 };
6007
6008 /****************************************************************************
6009 ****************************************************************************
6010 *
6011 * Infrastructure
6012 *
6013 ****************************************************************************
6014 ****************************************************************************/
6015
6016 /* sysfs name ---------------------------------------------------------- */
6017 static ssize_t thinkpad_acpi_pdev_name_show(struct device *dev,
6018 struct device_attribute *attr,
6019 char *buf)
6020 {
6021 return snprintf(buf, PAGE_SIZE, "%s\n", TPACPI_NAME);
6022 }
6023
6024 static struct device_attribute dev_attr_thinkpad_acpi_pdev_name =
6025 __ATTR(name, S_IRUGO, thinkpad_acpi_pdev_name_show, NULL);
6026
6027 /* --------------------------------------------------------------------- */
6028
6029 /* /proc support */
6030 static struct proc_dir_entry *proc_dir;
6031
6032 /*
6033 * Module and infrastructure proble, init and exit handling
6034 */
6035
6036 static int force_load;
6037
6038 #ifdef CONFIG_THINKPAD_ACPI_DEBUG
6039 static const char * __init str_supported(int is_supported)
6040 {
6041 static char text_unsupported[] __initdata = "not supported";
6042
6043 return (is_supported)? &text_unsupported[4] : &text_unsupported[0];
6044 }
6045 #endif /* CONFIG_THINKPAD_ACPI_DEBUG */
6046
6047 static void ibm_exit(struct ibm_struct *ibm)
6048 {
6049 dbg_printk(TPACPI_DBG_EXIT, "removing %s\n", ibm->name);
6050
6051 list_del_init(&ibm->all_drivers);
6052
6053 if (ibm->flags.acpi_notify_installed) {
6054 dbg_printk(TPACPI_DBG_EXIT,
6055 "%s: acpi_remove_notify_handler\n", ibm->name);
6056 BUG_ON(!ibm->acpi);
6057 acpi_remove_notify_handler(*ibm->acpi->handle,
6058 ibm->acpi->type,
6059 dispatch_acpi_notify);
6060 ibm->flags.acpi_notify_installed = 0;
6061 ibm->flags.acpi_notify_installed = 0;
6062 }
6063
6064 if (ibm->flags.proc_created) {
6065 dbg_printk(TPACPI_DBG_EXIT,
6066 "%s: remove_proc_entry\n", ibm->name);
6067 remove_proc_entry(ibm->name, proc_dir);
6068 ibm->flags.proc_created = 0;
6069 }
6070
6071 if (ibm->flags.acpi_driver_registered) {
6072 dbg_printk(TPACPI_DBG_EXIT,
6073 "%s: acpi_bus_unregister_driver\n", ibm->name);
6074 BUG_ON(!ibm->acpi);
6075 acpi_bus_unregister_driver(ibm->acpi->driver);
6076 kfree(ibm->acpi->driver);
6077 ibm->acpi->driver = NULL;
6078 ibm->flags.acpi_driver_registered = 0;
6079 }
6080
6081 if (ibm->flags.init_called && ibm->exit) {
6082 ibm->exit();
6083 ibm->flags.init_called = 0;
6084 }
6085
6086 dbg_printk(TPACPI_DBG_INIT, "finished removing %s\n", ibm->name);
6087 }
6088
6089 static int __init ibm_init(struct ibm_init_struct *iibm)
6090 {
6091 int ret;
6092 struct ibm_struct *ibm = iibm->data;
6093 struct proc_dir_entry *entry;
6094
6095 BUG_ON(ibm == NULL);
6096
6097 INIT_LIST_HEAD(&ibm->all_drivers);
6098
6099 if (ibm->flags.experimental && !experimental)
6100 return 0;
6101
6102 dbg_printk(TPACPI_DBG_INIT,
6103 "probing for %s\n", ibm->name);
6104
6105 if (iibm->init) {
6106 ret = iibm->init(iibm);
6107 if (ret > 0)
6108 return 0; /* probe failed */
6109 if (ret)
6110 return ret;
6111
6112 ibm->flags.init_called = 1;
6113 }
6114
6115 if (ibm->acpi) {
6116 if (ibm->acpi->hid) {
6117 ret = register_tpacpi_subdriver(ibm);
6118 if (ret)
6119 goto err_out;
6120 }
6121
6122 if (ibm->acpi->notify) {
6123 ret = setup_acpi_notify(ibm);
6124 if (ret == -ENODEV) {
6125 printk(TPACPI_NOTICE "disabling subdriver %s\n",
6126 ibm->name);
6127 ret = 0;
6128 goto err_out;
6129 }
6130 if (ret < 0)
6131 goto err_out;
6132 }
6133 }
6134
6135 dbg_printk(TPACPI_DBG_INIT,
6136 "%s installed\n", ibm->name);
6137
6138 if (ibm->read) {
6139 entry = create_proc_entry(ibm->name,
6140 S_IFREG | S_IRUGO | S_IWUSR,
6141 proc_dir);
6142 if (!entry) {
6143 printk(TPACPI_ERR "unable to create proc entry %s\n",
6144 ibm->name);
6145 ret = -ENODEV;
6146 goto err_out;
6147 }
6148 entry->owner = THIS_MODULE;
6149 entry->data = ibm;
6150 entry->read_proc = &dispatch_procfs_read;
6151 if (ibm->write)
6152 entry->write_proc = &dispatch_procfs_write;
6153 ibm->flags.proc_created = 1;
6154 }
6155
6156 list_add_tail(&ibm->all_drivers, &tpacpi_all_drivers);
6157
6158 return 0;
6159
6160 err_out:
6161 dbg_printk(TPACPI_DBG_INIT,
6162 "%s: at error exit path with result %d\n",
6163 ibm->name, ret);
6164
6165 ibm_exit(ibm);
6166 return (ret < 0)? ret : 0;
6167 }
6168
6169 /* Probing */
6170
6171 static void __init get_thinkpad_model_data(struct thinkpad_id_data *tp)
6172 {
6173 const struct dmi_device *dev = NULL;
6174 char ec_fw_string[18];
6175
6176 if (!tp)
6177 return;
6178
6179 memset(tp, 0, sizeof(*tp));
6180
6181 if (dmi_name_in_vendors("IBM"))
6182 tp->vendor = PCI_VENDOR_ID_IBM;
6183 else if (dmi_name_in_vendors("LENOVO"))
6184 tp->vendor = PCI_VENDOR_ID_LENOVO;
6185 else
6186 return;
6187
6188 tp->bios_version_str = kstrdup(dmi_get_system_info(DMI_BIOS_VERSION),
6189 GFP_KERNEL);
6190 if (!tp->bios_version_str)
6191 return;
6192 tp->bios_model = tp->bios_version_str[0]
6193 | (tp->bios_version_str[1] << 8);
6194
6195 /*
6196 * ThinkPad T23 or newer, A31 or newer, R50e or newer,
6197 * X32 or newer, all Z series; Some models must have an
6198 * up-to-date BIOS or they will not be detected.
6199 *
6200 * See http://thinkwiki.org/wiki/List_of_DMI_IDs
6201 */
6202 while ((dev = dmi_find_device(DMI_DEV_TYPE_OEM_STRING, NULL, dev))) {
6203 if (sscanf(dev->name,
6204 "IBM ThinkPad Embedded Controller -[%17c",
6205 ec_fw_string) == 1) {
6206 ec_fw_string[sizeof(ec_fw_string) - 1] = 0;
6207 ec_fw_string[strcspn(ec_fw_string, " ]")] = 0;
6208
6209 tp->ec_version_str = kstrdup(ec_fw_string, GFP_KERNEL);
6210 tp->ec_model = ec_fw_string[0]
6211 | (ec_fw_string[1] << 8);
6212 break;
6213 }
6214 }
6215
6216 tp->model_str = kstrdup(dmi_get_system_info(DMI_PRODUCT_VERSION),
6217 GFP_KERNEL);
6218 if (tp->model_str && strnicmp(tp->model_str, "ThinkPad", 8) != 0) {
6219 kfree(tp->model_str);
6220 tp->model_str = NULL;
6221 }
6222
6223 tp->nummodel_str = kstrdup(dmi_get_system_info(DMI_PRODUCT_NAME),
6224 GFP_KERNEL);
6225 }
6226
6227 static int __init probe_for_thinkpad(void)
6228 {
6229 int is_thinkpad;
6230
6231 if (acpi_disabled)
6232 return -ENODEV;
6233
6234 /*
6235 * Non-ancient models have better DMI tagging, but very old models
6236 * don't.
6237 */
6238 is_thinkpad = (thinkpad_id.model_str != NULL);
6239
6240 /* ec is required because many other handles are relative to it */
6241 TPACPI_ACPIHANDLE_INIT(ec);
6242 if (!ec_handle) {
6243 if (is_thinkpad)
6244 printk(TPACPI_ERR
6245 "Not yet supported ThinkPad detected!\n");
6246 return -ENODEV;
6247 }
6248
6249 /*
6250 * Risks a regression on very old machines, but reduces potential
6251 * false positives a damn great deal
6252 */
6253 if (!is_thinkpad)
6254 is_thinkpad = (thinkpad_id.vendor == PCI_VENDOR_ID_IBM);
6255
6256 if (!is_thinkpad && !force_load)
6257 return -ENODEV;
6258
6259 return 0;
6260 }
6261
6262
6263 /* Module init, exit, parameters */
6264
6265 static struct ibm_init_struct ibms_init[] __initdata = {
6266 {
6267 .init = thinkpad_acpi_driver_init,
6268 .data = &thinkpad_acpi_driver_data,
6269 },
6270 {
6271 .init = hotkey_init,
6272 .data = &hotkey_driver_data,
6273 },
6274 {
6275 .init = bluetooth_init,
6276 .data = &bluetooth_driver_data,
6277 },
6278 {
6279 .init = wan_init,
6280 .data = &wan_driver_data,
6281 },
6282 #ifdef CONFIG_THINKPAD_ACPI_VIDEO
6283 {
6284 .init = video_init,
6285 .data = &video_driver_data,
6286 },
6287 #endif
6288 {
6289 .init = light_init,
6290 .data = &light_driver_data,
6291 },
6292 #ifdef CONFIG_THINKPAD_ACPI_DOCK
6293 {
6294 .init = dock_init,
6295 .data = &dock_driver_data[0],
6296 },
6297 {
6298 .init = dock_init2,
6299 .data = &dock_driver_data[1],
6300 },
6301 #endif
6302 #ifdef CONFIG_THINKPAD_ACPI_BAY
6303 {
6304 .init = bay_init,
6305 .data = &bay_driver_data,
6306 },
6307 #endif
6308 {
6309 .init = cmos_init,
6310 .data = &cmos_driver_data,
6311 },
6312 {
6313 .init = led_init,
6314 .data = &led_driver_data,
6315 },
6316 {
6317 .init = beep_init,
6318 .data = &beep_driver_data,
6319 },
6320 {
6321 .init = thermal_init,
6322 .data = &thermal_driver_data,
6323 },
6324 {
6325 .data = &ecdump_driver_data,
6326 },
6327 {
6328 .init = brightness_init,
6329 .data = &brightness_driver_data,
6330 },
6331 {
6332 .data = &volume_driver_data,
6333 },
6334 {
6335 .init = fan_init,
6336 .data = &fan_driver_data,
6337 },
6338 };
6339
6340 static int __init set_ibm_param(const char *val, struct kernel_param *kp)
6341 {
6342 unsigned int i;
6343 struct ibm_struct *ibm;
6344
6345 if (!kp || !kp->name || !val)
6346 return -EINVAL;
6347
6348 for (i = 0; i < ARRAY_SIZE(ibms_init); i++) {
6349 ibm = ibms_init[i].data;
6350 WARN_ON(ibm == NULL);
6351
6352 if (!ibm || !ibm->name)
6353 continue;
6354
6355 if (strcmp(ibm->name, kp->name) == 0 && ibm->write) {
6356 if (strlen(val) > sizeof(ibms_init[i].param) - 2)
6357 return -ENOSPC;
6358 strcpy(ibms_init[i].param, val);
6359 strcat(ibms_init[i].param, ",");
6360 return 0;
6361 }
6362 }
6363
6364 return -EINVAL;
6365 }
6366
6367 module_param(experimental, int, 0);
6368 MODULE_PARM_DESC(experimental,
6369 "Enables experimental features when non-zero");
6370
6371 module_param_named(debug, dbg_level, uint, 0);
6372 MODULE_PARM_DESC(debug, "Sets debug level bit-mask");
6373
6374 module_param(force_load, bool, 0);
6375 MODULE_PARM_DESC(force_load,
6376 "Attempts to load the driver even on a "
6377 "mis-identified ThinkPad when true");
6378
6379 module_param_named(fan_control, fan_control_allowed, bool, 0);
6380 MODULE_PARM_DESC(fan_control,
6381 "Enables setting fan parameters features when true");
6382
6383 module_param_named(brightness_mode, brightness_mode, int, 0);
6384 MODULE_PARM_DESC(brightness_mode,
6385 "Selects brightness control strategy: "
6386 "0=auto, 1=EC, 2=CMOS, 3=both");
6387
6388 module_param(brightness_enable, uint, 0);
6389 MODULE_PARM_DESC(brightness_enable,
6390 "Enables backlight control when 1, disables when 0");
6391
6392 module_param(hotkey_report_mode, uint, 0);
6393 MODULE_PARM_DESC(hotkey_report_mode,
6394 "used for backwards compatibility with userspace, "
6395 "see documentation");
6396
6397 #define TPACPI_PARAM(feature) \
6398 module_param_call(feature, set_ibm_param, NULL, NULL, 0); \
6399 MODULE_PARM_DESC(feature, "Simulates thinkpad-acpi procfs command " \
6400 "at module load, see documentation")
6401
6402 TPACPI_PARAM(hotkey);
6403 TPACPI_PARAM(bluetooth);
6404 TPACPI_PARAM(video);
6405 TPACPI_PARAM(light);
6406 #ifdef CONFIG_THINKPAD_ACPI_DOCK
6407 TPACPI_PARAM(dock);
6408 #endif
6409 #ifdef CONFIG_THINKPAD_ACPI_BAY
6410 TPACPI_PARAM(bay);
6411 #endif /* CONFIG_THINKPAD_ACPI_BAY */
6412 TPACPI_PARAM(cmos);
6413 TPACPI_PARAM(led);
6414 TPACPI_PARAM(beep);
6415 TPACPI_PARAM(ecdump);
6416 TPACPI_PARAM(brightness);
6417 TPACPI_PARAM(volume);
6418 TPACPI_PARAM(fan);
6419
6420 static void thinkpad_acpi_module_exit(void)
6421 {
6422 struct ibm_struct *ibm, *itmp;
6423
6424 tpacpi_lifecycle = TPACPI_LIFE_EXITING;
6425
6426 list_for_each_entry_safe_reverse(ibm, itmp,
6427 &tpacpi_all_drivers,
6428 all_drivers) {
6429 ibm_exit(ibm);
6430 }
6431
6432 dbg_printk(TPACPI_DBG_INIT, "finished subdriver exit path...\n");
6433
6434 if (tpacpi_inputdev) {
6435 if (tp_features.input_device_registered)
6436 input_unregister_device(tpacpi_inputdev);
6437 else
6438 input_free_device(tpacpi_inputdev);
6439 }
6440
6441 if (tpacpi_hwmon)
6442 hwmon_device_unregister(tpacpi_hwmon);
6443
6444 if (tp_features.sensors_pdev_attrs_registered)
6445 device_remove_file(&tpacpi_sensors_pdev->dev,
6446 &dev_attr_thinkpad_acpi_pdev_name);
6447 if (tpacpi_sensors_pdev)
6448 platform_device_unregister(tpacpi_sensors_pdev);
6449 if (tpacpi_pdev)
6450 platform_device_unregister(tpacpi_pdev);
6451
6452 if (tp_features.sensors_pdrv_attrs_registered)
6453 tpacpi_remove_driver_attributes(&tpacpi_hwmon_pdriver.driver);
6454 if (tp_features.platform_drv_attrs_registered)
6455 tpacpi_remove_driver_attributes(&tpacpi_pdriver.driver);
6456
6457 if (tp_features.sensors_pdrv_registered)
6458 platform_driver_unregister(&tpacpi_hwmon_pdriver);
6459
6460 if (tp_features.platform_drv_registered)
6461 platform_driver_unregister(&tpacpi_pdriver);
6462
6463 if (proc_dir)
6464 remove_proc_entry(TPACPI_PROC_DIR, acpi_root_dir);
6465
6466 if (tpacpi_wq)
6467 destroy_workqueue(tpacpi_wq);
6468
6469 kfree(thinkpad_id.bios_version_str);
6470 kfree(thinkpad_id.ec_version_str);
6471 kfree(thinkpad_id.model_str);
6472 }
6473
6474
6475 static int __init thinkpad_acpi_module_init(void)
6476 {
6477 int ret, i;
6478
6479 tpacpi_lifecycle = TPACPI_LIFE_INIT;
6480
6481 /* Parameter checking */
6482 if (hotkey_report_mode > 2)
6483 return -EINVAL;
6484
6485 /* Driver-level probe */
6486
6487 get_thinkpad_model_data(&thinkpad_id);
6488 ret = probe_for_thinkpad();
6489 if (ret) {
6490 thinkpad_acpi_module_exit();
6491 return ret;
6492 }
6493
6494 /* Driver initialization */
6495
6496 TPACPI_ACPIHANDLE_INIT(ecrd);
6497 TPACPI_ACPIHANDLE_INIT(ecwr);
6498
6499 tpacpi_wq = create_singlethread_workqueue(TPACPI_WORKQUEUE_NAME);
6500 if (!tpacpi_wq) {
6501 thinkpad_acpi_module_exit();
6502 return -ENOMEM;
6503 }
6504
6505 proc_dir = proc_mkdir(TPACPI_PROC_DIR, acpi_root_dir);
6506 if (!proc_dir) {
6507 printk(TPACPI_ERR
6508 "unable to create proc dir " TPACPI_PROC_DIR);
6509 thinkpad_acpi_module_exit();
6510 return -ENODEV;
6511 }
6512 proc_dir->owner = THIS_MODULE;
6513
6514 ret = platform_driver_register(&tpacpi_pdriver);
6515 if (ret) {
6516 printk(TPACPI_ERR
6517 "unable to register main platform driver\n");
6518 thinkpad_acpi_module_exit();
6519 return ret;
6520 }
6521 tp_features.platform_drv_registered = 1;
6522
6523 ret = platform_driver_register(&tpacpi_hwmon_pdriver);
6524 if (ret) {
6525 printk(TPACPI_ERR
6526 "unable to register hwmon platform driver\n");
6527 thinkpad_acpi_module_exit();
6528 return ret;
6529 }
6530 tp_features.sensors_pdrv_registered = 1;
6531
6532 ret = tpacpi_create_driver_attributes(&tpacpi_pdriver.driver);
6533 if (!ret) {
6534 tp_features.platform_drv_attrs_registered = 1;
6535 ret = tpacpi_create_driver_attributes(
6536 &tpacpi_hwmon_pdriver.driver);
6537 }
6538 if (ret) {
6539 printk(TPACPI_ERR
6540 "unable to create sysfs driver attributes\n");
6541 thinkpad_acpi_module_exit();
6542 return ret;
6543 }
6544 tp_features.sensors_pdrv_attrs_registered = 1;
6545
6546
6547 /* Device initialization */
6548 tpacpi_pdev = platform_device_register_simple(TPACPI_DRVR_NAME, -1,
6549 NULL, 0);
6550 if (IS_ERR(tpacpi_pdev)) {
6551 ret = PTR_ERR(tpacpi_pdev);
6552 tpacpi_pdev = NULL;
6553 printk(TPACPI_ERR "unable to register platform device\n");
6554 thinkpad_acpi_module_exit();
6555 return ret;
6556 }
6557 tpacpi_sensors_pdev = platform_device_register_simple(
6558 TPACPI_HWMON_DRVR_NAME,
6559 -1, NULL, 0);
6560 if (IS_ERR(tpacpi_sensors_pdev)) {
6561 ret = PTR_ERR(tpacpi_sensors_pdev);
6562 tpacpi_sensors_pdev = NULL;
6563 printk(TPACPI_ERR
6564 "unable to register hwmon platform device\n");
6565 thinkpad_acpi_module_exit();
6566 return ret;
6567 }
6568 ret = device_create_file(&tpacpi_sensors_pdev->dev,
6569 &dev_attr_thinkpad_acpi_pdev_name);
6570 if (ret) {
6571 printk(TPACPI_ERR
6572 "unable to create sysfs hwmon device attributes\n");
6573 thinkpad_acpi_module_exit();
6574 return ret;
6575 }
6576 tp_features.sensors_pdev_attrs_registered = 1;
6577 tpacpi_hwmon = hwmon_device_register(&tpacpi_sensors_pdev->dev);
6578 if (IS_ERR(tpacpi_hwmon)) {
6579 ret = PTR_ERR(tpacpi_hwmon);
6580 tpacpi_hwmon = NULL;
6581 printk(TPACPI_ERR "unable to register hwmon device\n");
6582 thinkpad_acpi_module_exit();
6583 return ret;
6584 }
6585 mutex_init(&tpacpi_inputdev_send_mutex);
6586 tpacpi_inputdev = input_allocate_device();
6587 if (!tpacpi_inputdev) {
6588 printk(TPACPI_ERR "unable to allocate input device\n");
6589 thinkpad_acpi_module_exit();
6590 return -ENOMEM;
6591 } else {
6592 /* Prepare input device, but don't register */
6593 tpacpi_inputdev->name = "ThinkPad Extra Buttons";
6594 tpacpi_inputdev->phys = TPACPI_DRVR_NAME "/input0";
6595 tpacpi_inputdev->id.bustype = BUS_HOST;
6596 tpacpi_inputdev->id.vendor = (thinkpad_id.vendor) ?
6597 thinkpad_id.vendor :
6598 PCI_VENDOR_ID_IBM;
6599 tpacpi_inputdev->id.product = TPACPI_HKEY_INPUT_PRODUCT;
6600 tpacpi_inputdev->id.version = TPACPI_HKEY_INPUT_VERSION;
6601 }
6602 for (i = 0; i < ARRAY_SIZE(ibms_init); i++) {
6603 ret = ibm_init(&ibms_init[i]);
6604 if (ret >= 0 && *ibms_init[i].param)
6605 ret = ibms_init[i].data->write(ibms_init[i].param);
6606 if (ret < 0) {
6607 thinkpad_acpi_module_exit();
6608 return ret;
6609 }
6610 }
6611 ret = input_register_device(tpacpi_inputdev);
6612 if (ret < 0) {
6613 printk(TPACPI_ERR "unable to register input device\n");
6614 thinkpad_acpi_module_exit();
6615 return ret;
6616 } else {
6617 tp_features.input_device_registered = 1;
6618 }
6619
6620 tpacpi_lifecycle = TPACPI_LIFE_RUNNING;
6621 return 0;
6622 }
6623
6624 /* Please remove this in year 2009 */
6625 MODULE_ALIAS("ibm_acpi");
6626
6627 MODULE_ALIAS(TPACPI_DRVR_SHORTNAME);
6628
6629 /*
6630 * DMI matching for module autoloading
6631 *
6632 * See http://thinkwiki.org/wiki/List_of_DMI_IDs
6633 * See http://thinkwiki.org/wiki/BIOS_Upgrade_Downloads
6634 *
6635 * Only models listed in thinkwiki will be supported, so add yours
6636 * if it is not there yet.
6637 */
6638 #define IBM_BIOS_MODULE_ALIAS(__type) \
6639 MODULE_ALIAS("dmi:bvnIBM:bvr" __type "ET??WW")
6640
6641 /* Non-ancient thinkpads */
6642 MODULE_ALIAS("dmi:bvnIBM:*:svnIBM:*:pvrThinkPad*:rvnIBM:*");
6643 MODULE_ALIAS("dmi:bvnLENOVO:*:svnLENOVO:*:pvrThinkPad*:rvnLENOVO:*");
6644
6645 /* Ancient thinkpad BIOSes have to be identified by
6646 * BIOS type or model number, and there are far less
6647 * BIOS types than model numbers... */
6648 IBM_BIOS_MODULE_ALIAS("I[B,D,H,I,M,N,O,T,W,V,Y,Z]");
6649 IBM_BIOS_MODULE_ALIAS("1[0,3,6,8,A-G,I,K,M-P,S,T]");
6650 IBM_BIOS_MODULE_ALIAS("K[U,X-Z]");
6651
6652 MODULE_AUTHOR("Borislav Deianov, Henrique de Moraes Holschuh");
6653 MODULE_DESCRIPTION(TPACPI_DESC);
6654 MODULE_VERSION(TPACPI_VERSION);
6655 MODULE_LICENSE("GPL");
6656
6657 module_init(thinkpad_acpi_module_init);
6658 module_exit(thinkpad_acpi_module_exit);
Linux 2.6 ibm-acpi/thinkpad-acpi driver git tree