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ACPI: thinkpad-acpi: spring cleanup part 4
[linux-2.6/linux-acpi-2.6/ibm-acpi-2.6.git] / drivers / misc / thinkpad_acpi.c
blob45be8e5f935196c80acdcd42d9f0f4f31d3e78b6
1 /*
2 * thinkpad_acpi.c - ThinkPad ACPI Extras
3 *
4 *
5 * Copyright (C) 2004-2005 Borislav Deianov <borislav@users.sf.net>
6 * Copyright (C) 2006-2007 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 IBM_VERSION "0.18"
25 #define TPACPI_SYSFS_VERSION 0x020101
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 <asm/uaccess.h>
71
72 #include <linux/dmi.h>
73 #include <linux/jiffies.h>
74 #include <linux/workqueue.h>
75
76 #include <acpi/acpi_drivers.h>
77 #include <acpi/acnamesp.h>
78
79 #include <linux/pci_ids.h>
80
81
82 /* ThinkPad CMOS commands */
83 #define TP_CMOS_VOLUME_DOWN 0
84 #define TP_CMOS_VOLUME_UP 1
85 #define TP_CMOS_VOLUME_MUTE 2
86 #define TP_CMOS_BRIGHTNESS_UP 4
87 #define TP_CMOS_BRIGHTNESS_DOWN 5
88
89 /* NVRAM Addresses */
90 enum tp_nvram_addr {
91 TP_NVRAM_ADDR_HK2 = 0x57,
92 TP_NVRAM_ADDR_THINKLIGHT = 0x58,
93 TP_NVRAM_ADDR_VIDEO = 0x59,
94 TP_NVRAM_ADDR_BRIGHTNESS = 0x5e,
95 TP_NVRAM_ADDR_MIXER = 0x60,
96 };
97
98 /* NVRAM bit masks */
99 enum {
100 TP_NVRAM_MASK_HKT_THINKPAD = 0x08,
101 TP_NVRAM_MASK_HKT_ZOOM = 0x20,
102 TP_NVRAM_MASK_HKT_DISPLAY = 0x40,
103 TP_NVRAM_MASK_HKT_HIBERNATE = 0x80,
104 TP_NVRAM_MASK_THINKLIGHT = 0x10,
105 TP_NVRAM_MASK_HKT_DISPEXPND = 0x30,
106 TP_NVRAM_MASK_HKT_BRIGHTNESS = 0x20,
107 TP_NVRAM_MASK_LEVEL_BRIGHTNESS = 0x0f,
108 TP_NVRAM_POS_LEVEL_BRIGHTNESS = 0,
109 TP_NVRAM_MASK_MUTE = 0x40,
110 TP_NVRAM_MASK_HKT_VOLUME = 0x80,
111 TP_NVRAM_MASK_LEVEL_VOLUME = 0x0f,
112 TP_NVRAM_POS_LEVEL_VOLUME = 0,
113 };
114
115 /* ACPI HIDs */
116 #define IBM_HKEY_HID "IBM0068"
117
118 /* Input IDs */
119 #define TPACPI_HKEY_INPUT_PRODUCT 0x5054 /* "TP" */
120 #define TPACPI_HKEY_INPUT_VERSION 0x4101
121
122
123 /****************************************************************************
124 * Main driver
125 */
126
127 /* Module */
128 #define IBM_NAME "thinkpad"
129 #define IBM_DESC "ThinkPad ACPI Extras"
130 #define IBM_FILE IBM_NAME "_acpi"
131 #define IBM_URL "http://ibm-acpi.sf.net/"
132 #define IBM_MAIL "ibm-acpi-devel@lists.sourceforge.net"
133
134 #define IBM_PROC_DIR "ibm"
135 #define IBM_ACPI_EVENT_PREFIX "ibm"
136 #define IBM_DRVR_NAME IBM_FILE
137 #define IBM_HWMON_DRVR_NAME IBM_NAME "_hwmon"
138
139 #define IBM_MAX_ACPI_ARGS 3
140
141 MODULE_AUTHOR("Borislav Deianov, Henrique de Moraes Holschuh");
142 MODULE_DESCRIPTION(IBM_DESC);
143 MODULE_VERSION(IBM_VERSION);
144 MODULE_LICENSE("GPL");
145
146 /* Please remove this in year 2009 */
147 MODULE_ALIAS("ibm_acpi");
148
149 /*
150 * DMI matching for module autoloading
151 *
152 * See http://thinkwiki.org/wiki/List_of_DMI_IDs
153 * See http://thinkwiki.org/wiki/BIOS_Upgrade_Downloads
154 *
155 * Only models listed in thinkwiki will be supported, so add yours
156 * if it is not there yet.
157 */
158 #define IBM_BIOS_MODULE_ALIAS(__type) \
159 MODULE_ALIAS("dmi:bvnIBM:bvr" __type "ET??WW")
160
161 /* Non-ancient thinkpads */
162 MODULE_ALIAS("dmi:bvnIBM:*:svnIBM:*:pvrThinkPad*:rvnIBM:*");
163 MODULE_ALIAS("dmi:bvnLENOVO:*:svnLENOVO:*:pvrThinkPad*:rvnLENOVO:*");
164
165 /* Ancient thinkpad BIOSes have to be identified by
166 * BIOS type or model number, and there are far less
167 * BIOS types than model numbers... */
168 IBM_BIOS_MODULE_ALIAS("I[B,D,H,I,M,N,O,T,W,V,Y,Z]");
169 IBM_BIOS_MODULE_ALIAS("1[0,3,6,8,A-G,I,K,M-P,S,T]");
170 IBM_BIOS_MODULE_ALIAS("K[U,X-Z]");
171
172 /* Debugging */
173 #define IBM_LOG IBM_FILE ": "
174 #define IBM_ERR KERN_ERR IBM_LOG
175 #define IBM_NOTICE KERN_NOTICE IBM_LOG
176 #define IBM_INFO KERN_INFO IBM_LOG
177 #define IBM_DEBUG KERN_DEBUG IBM_LOG
178
179 #define TPACPI_DBG_ALL 0xffff
180 #define TPACPI_DBG_ALL 0xffff
181 #define TPACPI_DBG_INIT 0x0001
182 #define TPACPI_DBG_EXIT 0x0002
183 #define dbg_printk(a_dbg_level, format, arg...) \
184 do { if (dbg_level & a_dbg_level) \
185 printk(IBM_DEBUG "%s: " format, __func__ , ## arg); } while (0)
186 #ifdef CONFIG_THINKPAD_ACPI_DEBUG
187 #define vdbg_printk(a_dbg_level, format, arg...) \
188 dbg_printk(a_dbg_level, format, ## arg)
189 static const char *str_supported(int is_supported);
190 #else
191 #define vdbg_printk(a_dbg_level, format, arg...)
192 #endif
193
194 #define onoff(status,bit) ((status) & (1 << (bit)) ? "on" : "off")
195 #define enabled(status,bit) ((status) & (1 << (bit)) ? "enabled" : "disabled")
196 #define strlencmp(a,b) (strncmp((a), (b), strlen(b)))
197
198
199 /****************************************************************************
200 * Driver-wide structs and misc. variables
201 */
202
203 struct ibm_struct;
204
205 struct tp_acpi_drv_struct {
206 const struct acpi_device_id *hid;
207 struct acpi_driver *driver;
208
209 void (*notify) (struct ibm_struct *, u32);
210 acpi_handle *handle;
211 u32 type;
212 struct acpi_device *device;
213 };
214
215 struct ibm_struct {
216 char *name;
217
218 int (*read) (char *);
219 int (*write) (char *);
220 void (*exit) (void);
221 void (*resume) (void);
222
223 struct list_head all_drivers;
224
225 struct tp_acpi_drv_struct *acpi;
226
227 struct {
228 u8 acpi_driver_registered:1;
229 u8 acpi_notify_installed:1;
230 u8 proc_created:1;
231 u8 init_called:1;
232 u8 experimental:1;
233 } flags;
234 };
235
236 struct ibm_init_struct {
237 char param[32];
238
239 int (*init) (struct ibm_init_struct *);
240 struct ibm_struct *data;
241 };
242
243 static struct {
244 #ifdef CONFIG_THINKPAD_ACPI_BAY
245 u32 bay_status:1;
246 u32 bay_eject:1;
247 u32 bay_status2:1;
248 u32 bay_eject2:1;
249 #endif
250 u32 bluetooth:1;
251 u32 hotkey:1;
252 u32 hotkey_mask:1;
253 u32 hotkey_wlsw:1;
254 u32 light:1;
255 u32 light_status:1;
256 u32 bright_16levels:1;
257 u32 wan:1;
258 u32 fan_ctrl_status_undef:1;
259 u32 input_device_registered:1;
260 u32 platform_drv_registered:1;
261 u32 platform_drv_attrs_registered:1;
262 u32 sensors_pdrv_registered:1;
263 u32 sensors_pdrv_attrs_registered:1;
264 u32 sensors_pdev_attrs_registered:1;
265 u32 hotkey_poll_active:1;
266 } tp_features;
267
268 struct thinkpad_id_data {
269 unsigned int vendor; /* ThinkPad vendor:
270 * PCI_VENDOR_ID_IBM/PCI_VENDOR_ID_LENOVO */
271
272 char *bios_version_str; /* Something like 1ZET51WW (1.03z) */
273 char *ec_version_str; /* Something like 1ZHT51WW-1.04a */
274
275 u16 bios_model; /* Big Endian, TP-1Y = 0x5931, 0 = unknown */
276 u16 ec_model;
277
278 char *model_str;
279 };
280 static struct thinkpad_id_data thinkpad_id;
281
282 static enum {
283 TPACPI_LIFE_INIT = 0,
284 TPACPI_LIFE_RUNNING,
285 TPACPI_LIFE_EXITING,
286 } tpacpi_lifecycle;
287
288 static int experimental;
289 static u32 dbg_level;
290
291 /****************************************************************************
292 ****************************************************************************
293 *
294 * ACPI Helpers and device model
295 *
296 ****************************************************************************
297 ****************************************************************************/
298
299 /*************************************************************************
300 * ACPI basic handles
301 */
302
303 static acpi_handle root_handle;
304
305 #define IBM_HANDLE(object, parent, paths...) \
306 static acpi_handle object##_handle; \
307 static acpi_handle *object##_parent = &parent##_handle; \
308 static char *object##_path; \
309 static char *object##_paths[] = { paths }
310
311 IBM_HANDLE(ec, root, "\\_SB.PCI0.ISA.EC0", /* 240, 240x */
312 "\\_SB.PCI.ISA.EC", /* 570 */
313 "\\_SB.PCI0.ISA0.EC0", /* 600e/x, 770e, 770x */
314 "\\_SB.PCI0.ISA.EC", /* A21e, A2xm/p, T20-22, X20-21 */
315 "\\_SB.PCI0.AD4S.EC0", /* i1400, R30 */
316 "\\_SB.PCI0.ICH3.EC0", /* R31 */
317 "\\_SB.PCI0.LPC.EC", /* all others */
318 );
319
320 IBM_HANDLE(ecrd, ec, "ECRD"); /* 570 */
321 IBM_HANDLE(ecwr, ec, "ECWR"); /* 570 */
322
323 IBM_HANDLE(cmos, root, "\\UCMS", /* R50, R50e, R50p, R51, T4x, X31, X40 */
324 "\\CMOS", /* A3x, G4x, R32, T23, T30, X22-24, X30 */
325 "\\CMS", /* R40, R40e */
326 ); /* all others */
327
328 IBM_HANDLE(hkey, ec, "\\_SB.HKEY", /* 600e/x, 770e, 770x */
329 "^HKEY", /* R30, R31 */
330 "HKEY", /* all others */
331 ); /* 570 */
332
333
334 /*************************************************************************
335 * ACPI helpers
336 */
337
338 static int acpi_evalf(acpi_handle handle,
339 void *res, char *method, char *fmt, ...)
340 {
341 char *fmt0 = fmt;
342 struct acpi_object_list params;
343 union acpi_object in_objs[IBM_MAX_ACPI_ARGS];
344 struct acpi_buffer result, *resultp;
345 union acpi_object out_obj;
346 acpi_status status;
347 va_list ap;
348 char res_type;
349 int success;
350 int quiet;
351
352 if (!*fmt) {
353 printk(IBM_ERR "acpi_evalf() called with empty format\n");
354 return 0;
355 }
356
357 if (*fmt == 'q') {
358 quiet = 1;
359 fmt++;
360 } else
361 quiet = 0;
362
363 res_type = *(fmt++);
364
365 params.count = 0;
366 params.pointer = &in_objs[0];
367
368 va_start(ap, fmt);
369 while (*fmt) {
370 char c = *(fmt++);
371 switch (c) {
372 case 'd': /* int */
373 in_objs[params.count].integer.value = va_arg(ap, int);
374 in_objs[params.count++].type = ACPI_TYPE_INTEGER;
375 break;
376 /* add more types as needed */
377 default:
378 printk(IBM_ERR "acpi_evalf() called "
379 "with invalid format character '%c'\n", c);
380 return 0;
381 }
382 }
383 va_end(ap);
384
385 if (res_type != 'v') {
386 result.length = sizeof(out_obj);
387 result.pointer = &out_obj;
388 resultp = &result;
389 } else
390 resultp = NULL;
391
392 status = acpi_evaluate_object(handle, method, &params, resultp);
393
394 switch (res_type) {
395 case 'd': /* int */
396 if (res)
397 *(int *)res = out_obj.integer.value;
398 success = status == AE_OK && out_obj.type == ACPI_TYPE_INTEGER;
399 break;
400 case 'v': /* void */
401 success = status == AE_OK;
402 break;
403 /* add more types as needed */
404 default:
405 printk(IBM_ERR "acpi_evalf() called "
406 "with invalid format character '%c'\n", res_type);
407 return 0;
408 }
409
410 if (!success && !quiet)
411 printk(IBM_ERR "acpi_evalf(%s, %s, ...) failed: %d\n",
412 method, fmt0, status);
413
414 return success;
415 }
416
417 static int acpi_ec_read(int i, u8 * p)
418 {
419 int v;
420
421 if (ecrd_handle) {
422 if (!acpi_evalf(ecrd_handle, &v, NULL, "dd", i))
423 return 0;
424 *p = v;
425 } else {
426 if (ec_read(i, p) < 0)
427 return 0;
428 }
429
430 return 1;
431 }
432
433 static int acpi_ec_write(int i, u8 v)
434 {
435 if (ecwr_handle) {
436 if (!acpi_evalf(ecwr_handle, NULL, NULL, "vdd", i, v))
437 return 0;
438 } else {
439 if (ec_write(i, v) < 0)
440 return 0;
441 }
442
443 return 1;
444 }
445
446 static int _sta(acpi_handle handle)
447 {
448 int status;
449
450 if (!handle || !acpi_evalf(handle, &status, "_STA", "d"))
451 status = 0;
452
453 return status;
454 }
455
456 static int issue_thinkpad_cmos_command(int cmos_cmd)
457 {
458 if (!cmos_handle)
459 return -ENXIO;
460
461 if (!acpi_evalf(cmos_handle, NULL, NULL, "vd", cmos_cmd))
462 return -EIO;
463
464 return 0;
465 }
466
467 /*************************************************************************
468 * ACPI device model
469 */
470
471 #define IBM_ACPIHANDLE_INIT(object) \
472 drv_acpi_handle_init(#object, &object##_handle, *object##_parent, \
473 object##_paths, ARRAY_SIZE(object##_paths), &object##_path)
474
475 static void drv_acpi_handle_init(char *name,
476 acpi_handle *handle, acpi_handle parent,
477 char **paths, int num_paths, char **path)
478 {
479 int i;
480 acpi_status status;
481
482 vdbg_printk(TPACPI_DBG_INIT, "trying to locate ACPI handle for %s\n",
483 name);
484
485 for (i = 0; i < num_paths; i++) {
486 status = acpi_get_handle(parent, paths[i], handle);
487 if (ACPI_SUCCESS(status)) {
488 *path = paths[i];
489 dbg_printk(TPACPI_DBG_INIT,
490 "Found ACPI handle %s for %s\n",
491 *path, name);
492 return;
493 }
494 }
495
496 vdbg_printk(TPACPI_DBG_INIT, "ACPI handle for %s not found\n",
497 name);
498 *handle = NULL;
499 }
500
501 static void dispatch_acpi_notify(acpi_handle handle, u32 event, void *data)
502 {
503 struct ibm_struct *ibm = data;
504
505 if (tpacpi_lifecycle != TPACPI_LIFE_RUNNING)
506 return;
507
508 if (!ibm || !ibm->acpi || !ibm->acpi->notify)
509 return;
510
511 ibm->acpi->notify(ibm, event);
512 }
513
514 static int __init setup_acpi_notify(struct ibm_struct *ibm)
515 {
516 acpi_status status;
517 int rc;
518
519 BUG_ON(!ibm->acpi);
520
521 if (!*ibm->acpi->handle)
522 return 0;
523
524 vdbg_printk(TPACPI_DBG_INIT,
525 "setting up ACPI notify for %s\n", ibm->name);
526
527 rc = acpi_bus_get_device(*ibm->acpi->handle, &ibm->acpi->device);
528 if (rc < 0) {
529 printk(IBM_ERR "acpi_bus_get_device(%s) failed: %d\n",
530 ibm->name, rc);
531 return -ENODEV;
532 }
533
534 acpi_driver_data(ibm->acpi->device) = ibm;
535 sprintf(acpi_device_class(ibm->acpi->device), "%s/%s",
536 IBM_ACPI_EVENT_PREFIX,
537 ibm->name);
538
539 status = acpi_install_notify_handler(*ibm->acpi->handle,
540 ibm->acpi->type, dispatch_acpi_notify, ibm);
541 if (ACPI_FAILURE(status)) {
542 if (status == AE_ALREADY_EXISTS) {
543 printk(IBM_NOTICE "another device driver is already handling %s events\n",
544 ibm->name);
545 } else {
546 printk(IBM_ERR "acpi_install_notify_handler(%s) failed: %d\n",
547 ibm->name, status);
548 }
549 return -ENODEV;
550 }
551 ibm->flags.acpi_notify_installed = 1;
552 return 0;
553 }
554
555 static int __init tpacpi_device_add(struct acpi_device *device)
556 {
557 return 0;
558 }
559
560 static int __init register_tpacpi_subdriver(struct ibm_struct *ibm)
561 {
562 int rc;
563
564 dbg_printk(TPACPI_DBG_INIT,
565 "registering %s as an ACPI driver\n", ibm->name);
566
567 BUG_ON(!ibm->acpi);
568
569 ibm->acpi->driver = kzalloc(sizeof(struct acpi_driver), GFP_KERNEL);
570 if (!ibm->acpi->driver) {
571 printk(IBM_ERR "kzalloc(ibm->driver) failed\n");
572 return -ENOMEM;
573 }
574
575 sprintf(ibm->acpi->driver->name, "%s_%s", IBM_NAME, ibm->name);
576 ibm->acpi->driver->ids = ibm->acpi->hid;
577
578 ibm->acpi->driver->ops.add = &tpacpi_device_add;
579
580 rc = acpi_bus_register_driver(ibm->acpi->driver);
581 if (rc < 0) {
582 printk(IBM_ERR "acpi_bus_register_driver(%s) failed: %d\n",
583 ibm->name, rc);
584 kfree(ibm->acpi->driver);
585 ibm->acpi->driver = NULL;
586 } else if (!rc)
587 ibm->flags.acpi_driver_registered = 1;
588
589 return rc;
590 }
591
592
593 /****************************************************************************
594 ****************************************************************************
595 *
596 * Procfs Helpers
597 *
598 ****************************************************************************
599 ****************************************************************************/
600
601 static int dispatch_procfs_read(char *page, char **start, off_t off,
602 int count, int *eof, void *data)
603 {
604 struct ibm_struct *ibm = data;
605 int len;
606
607 if (!ibm || !ibm->read)
608 return -EINVAL;
609
610 len = ibm->read(page);
611 if (len < 0)
612 return len;
613
614 if (len <= off + count)
615 *eof = 1;
616 *start = page + off;
617 len -= off;
618 if (len > count)
619 len = count;
620 if (len < 0)
621 len = 0;
622
623 return len;
624 }
625
626 static int dispatch_procfs_write(struct file *file,
627 const char __user * userbuf,
628 unsigned long count, void *data)
629 {
630 struct ibm_struct *ibm = data;
631 char *kernbuf;
632 int ret;
633
634 if (!ibm || !ibm->write)
635 return -EINVAL;
636
637 kernbuf = kmalloc(count + 2, GFP_KERNEL);
638 if (!kernbuf)
639 return -ENOMEM;
640
641 if (copy_from_user(kernbuf, userbuf, count)) {
642 kfree(kernbuf);
643 return -EFAULT;
644 }
645
646 kernbuf[count] = 0;
647 strcat(kernbuf, ",");
648 ret = ibm->write(kernbuf);
649 if (ret == 0)
650 ret = count;
651
652 kfree(kernbuf);
653
654 return ret;
655 }
656
657 static char *next_cmd(char **cmds)
658 {
659 char *start = *cmds;
660 char *end;
661
662 while ((end = strchr(start, ',')) && end == start)
663 start = end + 1;
664
665 if (!end)
666 return NULL;
667
668 *end = 0;
669 *cmds = end + 1;
670 return start;
671 }
672
673
674 /****************************************************************************
675 ****************************************************************************
676 *
677 * Device model: input, hwmon and platform
678 *
679 ****************************************************************************
680 ****************************************************************************/
681
682 static struct platform_device *tpacpi_pdev;
683 static struct platform_device *tpacpi_sensors_pdev;
684 static struct device *tpacpi_hwmon;
685 static struct input_dev *tpacpi_inputdev;
686 static struct mutex tpacpi_inputdev_send_mutex;
687 static LIST_HEAD(tpacpi_all_drivers);
688
689 static int tpacpi_resume_handler(struct platform_device *pdev)
690 {
691 struct ibm_struct *ibm, *itmp;
692
693 list_for_each_entry_safe(ibm, itmp,
694 &tpacpi_all_drivers,
695 all_drivers) {
696 if (ibm->resume)
697 (ibm->resume)();
698 }
699
700 return 0;
701 }
702
703 static struct platform_driver tpacpi_pdriver = {
704 .driver = {
705 .name = IBM_DRVR_NAME,
706 .owner = THIS_MODULE,
707 },
708 .resume = tpacpi_resume_handler,
709 };
710
711 static struct platform_driver tpacpi_hwmon_pdriver = {
712 .driver = {
713 .name = IBM_HWMON_DRVR_NAME,
714 .owner = THIS_MODULE,
715 },
716 };
717
718 /*************************************************************************
719 * sysfs support helpers
720 */
721
722 struct attribute_set {
723 unsigned int members, max_members;
724 struct attribute_group group;
725 };
726
727 struct attribute_set_obj {
728 struct attribute_set s;
729 struct attribute *a;
730 } __attribute__((packed));
731
732 static struct attribute_set *create_attr_set(unsigned int max_members,
733 const char* name)
734 {
735 struct attribute_set_obj *sobj;
736
737 if (max_members == 0)
738 return NULL;
739
740 /* Allocates space for implicit NULL at the end too */
741 sobj = kzalloc(sizeof(struct attribute_set_obj) +
742 max_members * sizeof(struct attribute *),
743 GFP_KERNEL);
744 if (!sobj)
745 return NULL;
746 sobj->s.max_members = max_members;
747 sobj->s.group.attrs = &sobj->a;
748 sobj->s.group.name = name;
749
750 return &sobj->s;
751 }
752
753 #define destroy_attr_set(_set) \
754 kfree(_set);
755
756 /* not multi-threaded safe, use it in a single thread per set */
757 static int add_to_attr_set(struct attribute_set* s, struct attribute *attr)
758 {
759 if (!s || !attr)
760 return -EINVAL;
761
762 if (s->members >= s->max_members)
763 return -ENOMEM;
764
765 s->group.attrs[s->members] = attr;
766 s->members++;
767
768 return 0;
769 }
770
771 static int add_many_to_attr_set(struct attribute_set* s,
772 struct attribute **attr,
773 unsigned int count)
774 {
775 int i, res;
776
777 for (i = 0; i < count; i++) {
778 res = add_to_attr_set(s, attr[i]);
779 if (res)
780 return res;
781 }
782
783 return 0;
784 }
785
786 static void delete_attr_set(struct attribute_set* s, struct kobject *kobj)
787 {
788 sysfs_remove_group(kobj, &s->group);
789 destroy_attr_set(s);
790 }
791
792 #define register_attr_set_with_sysfs(_attr_set, _kobj) \
793 sysfs_create_group(_kobj, &_attr_set->group)
794
795 static int parse_strtoul(const char *buf,
796 unsigned long max, unsigned long *value)
797 {
798 char *endp;
799
800 while (*buf && isspace(*buf))
801 buf++;
802 *value = simple_strtoul(buf, &endp, 0);
803 while (*endp && isspace(*endp))
804 endp++;
805 if (*endp || *value > max)
806 return -EINVAL;
807
808 return 0;
809 }
810
811 /*************************************************************************
812 * thinkpad-acpi driver attributes
813 */
814
815 /* interface_version --------------------------------------------------- */
816 static ssize_t tpacpi_driver_interface_version_show(
817 struct device_driver *drv,
818 char *buf)
819 {
820 return snprintf(buf, PAGE_SIZE, "0x%08x\n", TPACPI_SYSFS_VERSION);
821 }
822
823 static DRIVER_ATTR(interface_version, S_IRUGO,
824 tpacpi_driver_interface_version_show, NULL);
825
826 /* debug_level --------------------------------------------------------- */
827 static ssize_t tpacpi_driver_debug_show(struct device_driver *drv,
828 char *buf)
829 {
830 return snprintf(buf, PAGE_SIZE, "0x%04x\n", dbg_level);
831 }
832
833 static ssize_t tpacpi_driver_debug_store(struct device_driver *drv,
834 const char *buf, size_t count)
835 {
836 unsigned long t;
837
838 if (parse_strtoul(buf, 0xffff, &t))
839 return -EINVAL;
840
841 dbg_level = t;
842
843 return count;
844 }
845
846 static DRIVER_ATTR(debug_level, S_IWUSR | S_IRUGO,
847 tpacpi_driver_debug_show, tpacpi_driver_debug_store);
848
849 /* version ------------------------------------------------------------- */
850 static ssize_t tpacpi_driver_version_show(struct device_driver *drv,
851 char *buf)
852 {
853 return snprintf(buf, PAGE_SIZE, "%s v%s\n", IBM_DESC, IBM_VERSION);
854 }
855
856 static DRIVER_ATTR(version, S_IRUGO,
857 tpacpi_driver_version_show, NULL);
858
859 /* --------------------------------------------------------------------- */
860
861 static struct driver_attribute* tpacpi_driver_attributes[] = {
862 &driver_attr_debug_level, &driver_attr_version,
863 &driver_attr_interface_version,
864 };
865
866 static int __init tpacpi_create_driver_attributes(struct device_driver *drv)
867 {
868 int i, res;
869
870 i = 0;
871 res = 0;
872 while (!res && i < ARRAY_SIZE(tpacpi_driver_attributes)) {
873 res = driver_create_file(drv, tpacpi_driver_attributes[i]);
874 i++;
875 }
876
877 return res;
878 }
879
880 static void tpacpi_remove_driver_attributes(struct device_driver *drv)
881 {
882 int i;
883
884 for(i = 0; i < ARRAY_SIZE(tpacpi_driver_attributes); i++)
885 driver_remove_file(drv, tpacpi_driver_attributes[i]);
886 }
887
888 /****************************************************************************
889 ****************************************************************************
890 *
891 * Subdrivers
892 *
893 ****************************************************************************
894 ****************************************************************************/
895
896 /*************************************************************************
897 * thinkpad-acpi init subdriver
898 */
899
900 static int __init thinkpad_acpi_driver_init(struct ibm_init_struct *iibm)
901 {
902 printk(IBM_INFO "%s v%s\n", IBM_DESC, IBM_VERSION);
903 printk(IBM_INFO "%s\n", IBM_URL);
904
905 printk(IBM_INFO "ThinkPad BIOS %s, EC %s\n",
906 (thinkpad_id.bios_version_str) ?
907 thinkpad_id.bios_version_str : "unknown",
908 (thinkpad_id.ec_version_str) ?
909 thinkpad_id.ec_version_str : "unknown");
910
911 if (thinkpad_id.vendor && thinkpad_id.model_str)
912 printk(IBM_INFO "%s %s\n",
913 (thinkpad_id.vendor == PCI_VENDOR_ID_IBM) ?
914 "IBM" : ((thinkpad_id.vendor ==
915 PCI_VENDOR_ID_LENOVO) ?
916 "Lenovo" : "Unknown vendor"),
917 thinkpad_id.model_str);
918
919 return 0;
920 }
921
922 static int thinkpad_acpi_driver_read(char *p)
923 {
924 int len = 0;
925
926 len += sprintf(p + len, "driver:\t\t%s\n", IBM_DESC);
927 len += sprintf(p + len, "version:\t%s\n", IBM_VERSION);
928
929 return len;
930 }
931
932 static struct ibm_struct thinkpad_acpi_driver_data = {
933 .name = "driver",
934 .read = thinkpad_acpi_driver_read,
935 };
936
937 /*************************************************************************
938 * Hotkey subdriver
939 */
940
941 enum { /* hot key scan codes (derived from ACPI DSDT) */
942 TP_ACPI_HOTKEYSCAN_FNF1 = 0,
943 TP_ACPI_HOTKEYSCAN_FNF2,
944 TP_ACPI_HOTKEYSCAN_FNF3,
945 TP_ACPI_HOTKEYSCAN_FNF4,
946 TP_ACPI_HOTKEYSCAN_FNF5,
947 TP_ACPI_HOTKEYSCAN_FNF6,
948 TP_ACPI_HOTKEYSCAN_FNF7,
949 TP_ACPI_HOTKEYSCAN_FNF8,
950 TP_ACPI_HOTKEYSCAN_FNF9,
951 TP_ACPI_HOTKEYSCAN_FNF10,
952 TP_ACPI_HOTKEYSCAN_FNF11,
953 TP_ACPI_HOTKEYSCAN_FNF12,
954 TP_ACPI_HOTKEYSCAN_FNBACKSPACE,
955 TP_ACPI_HOTKEYSCAN_FNINSERT,
956 TP_ACPI_HOTKEYSCAN_FNDELETE,
957 TP_ACPI_HOTKEYSCAN_FNHOME,
958 TP_ACPI_HOTKEYSCAN_FNEND,
959 TP_ACPI_HOTKEYSCAN_FNPAGEUP,
960 TP_ACPI_HOTKEYSCAN_FNPAGEDOWN,
961 TP_ACPI_HOTKEYSCAN_FNSPACE,
962 TP_ACPI_HOTKEYSCAN_VOLUMEUP,
963 TP_ACPI_HOTKEYSCAN_VOLUMEDOWN,
964 TP_ACPI_HOTKEYSCAN_MUTE,
965 TP_ACPI_HOTKEYSCAN_THINKPAD,
966 };
967
968 enum { /* Keys available through NVRAM polling */
969 TPACPI_HKEY_NVRAM_KNOWN_MASK = 0x00fb88c0U,
970 TPACPI_HKEY_NVRAM_GOOD_MASK = 0x00fb8000U,
971 };
972
973 enum { /* Positions of some of the keys in hotkey masks */
974 TP_ACPI_HKEY_DISPSWTCH_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNF7,
975 TP_ACPI_HKEY_DISPXPAND_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNF8,
976 TP_ACPI_HKEY_HIBERNATE_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNF12,
977 TP_ACPI_HKEY_BRGHTUP_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNHOME,
978 TP_ACPI_HKEY_BRGHTDWN_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNEND,
979 TP_ACPI_HKEY_THNKLGHT_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNPAGEUP,
980 TP_ACPI_HKEY_ZOOM_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNSPACE,
981 TP_ACPI_HKEY_VOLUP_MASK = 1 << TP_ACPI_HOTKEYSCAN_VOLUMEUP,
982 TP_ACPI_HKEY_VOLDWN_MASK = 1 << TP_ACPI_HOTKEYSCAN_VOLUMEDOWN,
983 TP_ACPI_HKEY_MUTE_MASK = 1 << TP_ACPI_HOTKEYSCAN_MUTE,
984 TP_ACPI_HKEY_THINKPAD_MASK = 1 << TP_ACPI_HOTKEYSCAN_THINKPAD,
985 };
986
987 enum { /* NVRAM to ACPI HKEY group map */
988 TP_NVRAM_HKEY_GROUP_HK2 = TP_ACPI_HKEY_THINKPAD_MASK |
989 TP_ACPI_HKEY_ZOOM_MASK |
990 TP_ACPI_HKEY_DISPSWTCH_MASK |
991 TP_ACPI_HKEY_HIBERNATE_MASK,
992 TP_NVRAM_HKEY_GROUP_BRIGHTNESS = TP_ACPI_HKEY_BRGHTUP_MASK |
993 TP_ACPI_HKEY_BRGHTDWN_MASK,
994 TP_NVRAM_HKEY_GROUP_VOLUME = TP_ACPI_HKEY_VOLUP_MASK |
995 TP_ACPI_HKEY_VOLDWN_MASK |
996 TP_ACPI_HKEY_MUTE_MASK,
997 };
998
999 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
1000 struct tp_nvram_state {
1001 u16 thinkpad_toggle:1;
1002 u16 zoom_toggle:1;
1003 u16 display_toggle:1;
1004 u16 thinklight_toggle:1;
1005 u16 hibernate_toggle:1;
1006 u16 displayexp_toggle:1;
1007 u16 display_state:1;
1008 u16 brightness_toggle:1;
1009 u16 volume_toggle:1;
1010 u16 mute:1;
1011
1012 u8 brightness_level;
1013 u8 volume_level;
1014 };
1015
1016 static struct task_struct *tpacpi_hotkey_task;
1017 static u32 hotkey_source_mask; /* bit mask 0=ACPI,1=NVRAM */
1018 static int hotkey_poll_freq = 10; /* Hz */
1019 static struct mutex hotkey_thread_mutex;
1020 static struct mutex hotkey_thread_data_mutex;
1021 static unsigned int hotkey_config_change;
1022
1023 #else /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
1024
1025 #define hotkey_source_mask 0U
1026
1027 #endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
1028
1029 static struct mutex hotkey_mutex;
1030
1031 static int hotkey_orig_status;
1032 static u32 hotkey_orig_mask;
1033 static u32 hotkey_all_mask;
1034 static u32 hotkey_reserved_mask;
1035 static u32 hotkey_mask;
1036
1037 static unsigned int hotkey_report_mode;
1038
1039 static u16 *hotkey_keycode_map;
1040
1041 static struct attribute_set *hotkey_dev_attributes;
1042
1043 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
1044 #define HOTKEY_CONFIG_CRITICAL_START \
1045 mutex_lock(&hotkey_thread_data_mutex); \
1046 hotkey_config_change++;
1047 #define HOTKEY_CONFIG_CRITICAL_END \
1048 mutex_unlock(&hotkey_thread_data_mutex);
1049 #else
1050 #define HOTKEY_CONFIG_CRITICAL_START
1051 #define HOTKEY_CONFIG_CRITICAL_END
1052 #endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
1053
1054 static int hotkey_get_wlsw(int *status)
1055 {
1056 if (!acpi_evalf(hkey_handle, status, "WLSW", "d"))
1057 return -EIO;
1058 return 0;
1059 }
1060
1061 /*
1062 * Call with hotkey_mutex held
1063 */
1064 static int hotkey_mask_get(void)
1065 {
1066 u32 m = 0;
1067
1068 if (tp_features.hotkey_mask) {
1069 if (!acpi_evalf(hkey_handle, &m, "DHKN", "d"))
1070 return -EIO;
1071 }
1072 hotkey_mask = m | (hotkey_source_mask & hotkey_mask);
1073
1074 return 0;
1075 }
1076
1077 /*
1078 * Call with hotkey_mutex held
1079 */
1080 static int hotkey_mask_set(u32 mask)
1081 {
1082 int i;
1083 int rc = 0;
1084
1085 if (tp_features.hotkey_mask) {
1086 HOTKEY_CONFIG_CRITICAL_START
1087 for (i = 0; i < 32; i++) {
1088 u32 m = 1 << i;
1089 /* enable in firmware mask only keys not in NVRAM
1090 * mode, but enable the key in the cached hotkey_mask
1091 * regardless of mode, or the key will end up
1092 * disabled by hotkey_mask_get() */
1093 if (!acpi_evalf(hkey_handle,
1094 NULL, "MHKM", "vdd", i + 1,
1095 !!((mask & ~hotkey_source_mask) & m))) {
1096 rc = -EIO;
1097 break;
1098 } else {
1099 hotkey_mask = (hotkey_mask & ~m) | (mask & m);
1100 }
1101 }
1102 HOTKEY_CONFIG_CRITICAL_END
1103
1104 /* hotkey_mask_get must be called unconditionally below */
1105 if (!hotkey_mask_get() && !rc &&
1106 (hotkey_mask & ~hotkey_source_mask) !=
1107 (mask & ~hotkey_source_mask)) {
1108 printk(IBM_NOTICE
1109 "requested hot key mask 0x%08x, but "
1110 "firmware forced it to 0x%08x\n",
1111 mask, hotkey_mask);
1112 }
1113 } else {
1114 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
1115 HOTKEY_CONFIG_CRITICAL_START
1116 hotkey_mask = mask & hotkey_source_mask;
1117 HOTKEY_CONFIG_CRITICAL_END
1118 hotkey_mask_get();
1119 if (hotkey_mask != mask) {
1120 printk(IBM_NOTICE
1121 "requested hot key mask 0x%08x, "
1122 "forced to 0x%08x (NVRAM poll mask is "
1123 "0x%08x): no firmware mask support\n",
1124 mask, hotkey_mask, hotkey_source_mask);
1125 }
1126 #else
1127 hotkey_mask_get();
1128 rc = -ENXIO;
1129 #endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
1130 }
1131
1132 return rc;
1133 }
1134
1135 static int hotkey_status_get(int *status)
1136 {
1137 if (!acpi_evalf(hkey_handle, status, "DHKC", "d"))
1138 return -EIO;
1139
1140 return 0;
1141 }
1142
1143 static int hotkey_status_set(int status)
1144 {
1145 if (!acpi_evalf(hkey_handle, NULL, "MHKC", "vd", status))
1146 return -EIO;
1147
1148 return 0;
1149 }
1150
1151 static void tpacpi_input_send_radiosw(void)
1152 {
1153 int wlsw;
1154
1155 mutex_lock(&tpacpi_inputdev_send_mutex);
1156
1157 if (tp_features.hotkey_wlsw && !hotkey_get_wlsw(&wlsw)) {
1158 input_report_switch(tpacpi_inputdev,
1159 SW_RADIO, !!wlsw);
1160 input_sync(tpacpi_inputdev);
1161 }
1162
1163 mutex_unlock(&tpacpi_inputdev_send_mutex);
1164 }
1165
1166 static void tpacpi_input_send_key(unsigned int scancode)
1167 {
1168 unsigned int keycode;
1169
1170 keycode = hotkey_keycode_map[scancode];
1171
1172 if (keycode != KEY_RESERVED) {
1173 mutex_lock(&tpacpi_inputdev_send_mutex);
1174
1175 input_report_key(tpacpi_inputdev, keycode, 1);
1176 if (keycode == KEY_UNKNOWN)
1177 input_event(tpacpi_inputdev, EV_MSC, MSC_SCAN,
1178 scancode);
1179 input_sync(tpacpi_inputdev);
1180
1181 input_report_key(tpacpi_inputdev, keycode, 0);
1182 if (keycode == KEY_UNKNOWN)
1183 input_event(tpacpi_inputdev, EV_MSC, MSC_SCAN,
1184 scancode);
1185 input_sync(tpacpi_inputdev);
1186
1187 mutex_unlock(&tpacpi_inputdev_send_mutex);
1188 }
1189 }
1190
1191 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
1192 static struct tp_acpi_drv_struct ibm_hotkey_acpidriver;
1193
1194 static void tpacpi_hotkey_send_key(unsigned int scancode)
1195 {
1196 tpacpi_input_send_key(scancode);
1197 if (hotkey_report_mode < 2) {
1198 acpi_bus_generate_proc_event(ibm_hotkey_acpidriver.device,
1199 0x80, 0x1001 + scancode);
1200 }
1201 }
1202
1203 static void hotkey_read_nvram(struct tp_nvram_state *n, u32 m)
1204 {
1205 u8 d;
1206
1207 if (m & TP_NVRAM_HKEY_GROUP_HK2) {
1208 d = nvram_read_byte(TP_NVRAM_ADDR_HK2);
1209 n->thinkpad_toggle = !!(d & TP_NVRAM_MASK_HKT_THINKPAD);
1210 n->zoom_toggle = !!(d & TP_NVRAM_MASK_HKT_ZOOM);
1211 n->display_toggle = !!(d & TP_NVRAM_MASK_HKT_DISPLAY);
1212 n->hibernate_toggle = !!(d & TP_NVRAM_MASK_HKT_HIBERNATE);
1213 }
1214 if (m & TP_ACPI_HKEY_THNKLGHT_MASK) {
1215 d = nvram_read_byte(TP_NVRAM_ADDR_THINKLIGHT);
1216 n->thinklight_toggle = !!(d & TP_NVRAM_MASK_THINKLIGHT);
1217 }
1218 if (m & TP_ACPI_HKEY_DISPXPAND_MASK) {
1219 d = nvram_read_byte(TP_NVRAM_ADDR_VIDEO);
1220 n->displayexp_toggle =
1221 !!(d & TP_NVRAM_MASK_HKT_DISPEXPND);
1222 }
1223 if (m & TP_NVRAM_HKEY_GROUP_BRIGHTNESS) {
1224 d = nvram_read_byte(TP_NVRAM_ADDR_BRIGHTNESS);
1225 n->brightness_level = (d & TP_NVRAM_MASK_LEVEL_BRIGHTNESS)
1226 >> TP_NVRAM_POS_LEVEL_BRIGHTNESS;
1227 n->brightness_toggle =
1228 !!(d & TP_NVRAM_MASK_HKT_BRIGHTNESS);
1229 }
1230 if (m & TP_NVRAM_HKEY_GROUP_VOLUME) {
1231 d = nvram_read_byte(TP_NVRAM_ADDR_MIXER);
1232 n->volume_level = (d & TP_NVRAM_MASK_LEVEL_VOLUME)
1233 >> TP_NVRAM_POS_LEVEL_VOLUME;
1234 n->mute = !!(d & TP_NVRAM_MASK_MUTE);
1235 n->volume_toggle = !!(d & TP_NVRAM_MASK_HKT_VOLUME);
1236 }
1237 }
1238
1239 #define TPACPI_COMPARE_KEY(__scancode, __member) \
1240 do { if ((mask & (1 << __scancode)) && oldn->__member != newn->__member) \
1241 tpacpi_hotkey_send_key(__scancode); } while (0)
1242
1243 #define TPACPI_MAY_SEND_KEY(__scancode) \
1244 do { if (mask & (1 << __scancode)) \
1245 tpacpi_hotkey_send_key(__scancode); } while (0)
1246
1247 static void hotkey_compare_and_issue_event(struct tp_nvram_state *oldn,
1248 struct tp_nvram_state *newn,
1249 u32 mask)
1250 {
1251 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_THINKPAD, thinkpad_toggle);
1252 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNSPACE, zoom_toggle);
1253 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNF7, display_toggle);
1254 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNF12, hibernate_toggle);
1255
1256 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNPAGEUP, thinklight_toggle);
1257
1258 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNF8, displayexp_toggle);
1259
1260 /* handle volume */
1261 if (oldn->volume_toggle != newn->volume_toggle) {
1262 if (oldn->mute != newn->mute) {
1263 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_MUTE);
1264 }
1265 if (oldn->volume_level > newn->volume_level) {
1266 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEDOWN);
1267 } else if (oldn->volume_level < newn->volume_level) {
1268 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEUP);
1269 } else if (oldn->mute == newn->mute) {
1270 /* repeated key presses that didn't change state */
1271 if (newn->mute) {
1272 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_MUTE);
1273 } else if (newn->volume_level != 0) {
1274 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEUP);
1275 } else {
1276 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEDOWN);
1277 }
1278 }
1279 }
1280
1281 /* handle brightness */
1282 if (oldn->brightness_toggle != newn->brightness_toggle) {
1283 if (oldn->brightness_level < newn->brightness_level) {
1284 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNHOME);
1285 } else if (oldn->brightness_level > newn->brightness_level) {
1286 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNEND);
1287 } else {
1288 /* repeated key presses that didn't change state */
1289 if (newn->brightness_level != 0) {
1290 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNHOME);
1291 } else {
1292 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNEND);
1293 }
1294 }
1295 }
1296 }
1297
1298 #undef TPACPI_COMPARE_KEY
1299 #undef TPACPI_MAY_SEND_KEY
1300
1301 static int hotkey_kthread(void *data)
1302 {
1303 struct tp_nvram_state s[2];
1304 u32 mask;
1305 unsigned int si, so;
1306 unsigned long t;
1307 unsigned int change_detector, must_reset;
1308
1309 mutex_lock(&hotkey_thread_mutex);
1310
1311 if (tpacpi_lifecycle == TPACPI_LIFE_EXITING)
1312 goto exit;
1313
1314 set_freezable();
1315
1316 so = 0;
1317 si = 1;
1318 t = 0;
1319
1320 /* Initial state for compares */
1321 mutex_lock(&hotkey_thread_data_mutex);
1322 change_detector = hotkey_config_change;
1323 mask = hotkey_source_mask & hotkey_mask;
1324 mutex_unlock(&hotkey_thread_data_mutex);
1325 hotkey_read_nvram(&s[so], mask);
1326
1327 while (!kthread_should_stop() && hotkey_poll_freq) {
1328 if (t == 0)
1329 t = 1000/hotkey_poll_freq;
1330 t = msleep_interruptible(t);
1331 if (unlikely(kthread_should_stop()))
1332 break;
1333 must_reset = try_to_freeze();
1334 if (t > 0 && !must_reset)
1335 continue;
1336
1337 mutex_lock(&hotkey_thread_data_mutex);
1338 if (must_reset || hotkey_config_change != change_detector) {
1339 /* forget old state on thaw or config change */
1340 si = so;
1341 t = 0;
1342 change_detector = hotkey_config_change;
1343 }
1344 mask = hotkey_source_mask & hotkey_mask;
1345 mutex_unlock(&hotkey_thread_data_mutex);
1346
1347 if (likely(mask)) {
1348 hotkey_read_nvram(&s[si], mask);
1349 if (likely(si != so)) {
1350 hotkey_compare_and_issue_event(&s[so], &s[si],
1351 mask);
1352 }
1353 }
1354
1355 so = si;
1356 si ^= 1;
1357 }
1358
1359 exit:
1360 mutex_unlock(&hotkey_thread_mutex);
1361 return 0;
1362 }
1363
1364 static void hotkey_poll_stop_sync(void)
1365 {
1366 if (tpacpi_hotkey_task) {
1367 if (frozen(tpacpi_hotkey_task) ||
1368 freezing(tpacpi_hotkey_task))
1369 thaw_process(tpacpi_hotkey_task);
1370
1371 kthread_stop(tpacpi_hotkey_task);
1372 tpacpi_hotkey_task = NULL;
1373 mutex_lock(&hotkey_thread_mutex);
1374 /* at this point, the thread did exit */
1375 mutex_unlock(&hotkey_thread_mutex);
1376 }
1377 }
1378
1379 /* call with hotkey_mutex held */
1380 static void hotkey_poll_setup(int may_warn)
1381 {
1382 if ((hotkey_source_mask & hotkey_mask) != 0 &&
1383 hotkey_poll_freq > 0 &&
1384 (tpacpi_inputdev->users > 0 || hotkey_report_mode < 2)) {
1385 if (!tpacpi_hotkey_task) {
1386 tpacpi_hotkey_task = kthread_run(hotkey_kthread,
1387 NULL, IBM_FILE "d");
1388 if (IS_ERR(tpacpi_hotkey_task)) {
1389 tpacpi_hotkey_task = NULL;
1390 printk(IBM_ERR "could not create kernel thread "
1391 "for hotkey polling\n");
1392 }
1393 }
1394 } else {
1395 hotkey_poll_stop_sync();
1396 if (may_warn &&
1397 hotkey_source_mask != 0 && hotkey_poll_freq == 0) {
1398 printk(IBM_NOTICE "hot keys 0x%08x require polling, "
1399 "which is currently disabled\n",
1400 hotkey_source_mask);
1401 }
1402 }
1403 }
1404
1405 static void hotkey_poll_setup_safe(int may_warn)
1406 {
1407 mutex_lock(&hotkey_mutex);
1408 hotkey_poll_setup(may_warn);
1409 mutex_unlock(&hotkey_mutex);
1410 }
1411
1412 static int hotkey_inputdev_open(struct input_dev *dev)
1413 {
1414 switch (tpacpi_lifecycle) {
1415 case TPACPI_LIFE_INIT:
1416 /*
1417 * hotkey_init will call hotkey_poll_setup_safe
1418 * at the appropriate moment
1419 */
1420 return 0;
1421 case TPACPI_LIFE_EXITING:
1422 return -EBUSY;
1423 case TPACPI_LIFE_RUNNING:
1424 hotkey_poll_setup_safe(0);
1425 return 0;
1426 }
1427
1428 /* Should only happen if tpacpi_lifecycle is corrupt */
1429 BUG();
1430 return -EBUSY;
1431 }
1432
1433 static void hotkey_inputdev_close(struct input_dev *dev)
1434 {
1435 /* disable hotkey polling when possible */
1436 if (tpacpi_lifecycle == TPACPI_LIFE_RUNNING)
1437 hotkey_poll_setup_safe(0);
1438 }
1439 #endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
1440
1441 /* sysfs hotkey enable ------------------------------------------------- */
1442 static ssize_t hotkey_enable_show(struct device *dev,
1443 struct device_attribute *attr,
1444 char *buf)
1445 {
1446 int res, status;
1447
1448 res = hotkey_status_get(&status);
1449 if (res)
1450 return res;
1451
1452 return snprintf(buf, PAGE_SIZE, "%d\n", status);
1453 }
1454
1455 static ssize_t hotkey_enable_store(struct device *dev,
1456 struct device_attribute *attr,
1457 const char *buf, size_t count)
1458 {
1459 unsigned long t;
1460 int res;
1461
1462 if (parse_strtoul(buf, 1, &t))
1463 return -EINVAL;
1464
1465 res = hotkey_status_set(t);
1466
1467 return (res) ? res : count;
1468 }
1469
1470 static struct device_attribute dev_attr_hotkey_enable =
1471 __ATTR(hotkey_enable, S_IWUSR | S_IRUGO,
1472 hotkey_enable_show, hotkey_enable_store);
1473
1474 /* sysfs hotkey mask --------------------------------------------------- */
1475 static ssize_t hotkey_mask_show(struct device *dev,
1476 struct device_attribute *attr,
1477 char *buf)
1478 {
1479 int res;
1480
1481 if (mutex_lock_interruptible(&hotkey_mutex))
1482 return -ERESTARTSYS;
1483 res = hotkey_mask_get();
1484 mutex_unlock(&hotkey_mutex);
1485
1486 return (res)?
1487 res : snprintf(buf, PAGE_SIZE, "0x%08x\n", hotkey_mask);
1488 }
1489
1490 static ssize_t hotkey_mask_store(struct device *dev,
1491 struct device_attribute *attr,
1492 const char *buf, size_t count)
1493 {
1494 unsigned long t;
1495 int res;
1496
1497 if (parse_strtoul(buf, 0xffffffffUL, &t))
1498 return -EINVAL;
1499
1500 if (mutex_lock_interruptible(&hotkey_mutex))
1501 return -ERESTARTSYS;
1502
1503 res = hotkey_mask_set(t);
1504
1505 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
1506 hotkey_poll_setup(1);
1507 #endif
1508
1509 mutex_unlock(&hotkey_mutex);
1510
1511 return (res) ? res : count;
1512 }
1513
1514 static struct device_attribute dev_attr_hotkey_mask =
1515 __ATTR(hotkey_mask, S_IWUSR | S_IRUGO,
1516 hotkey_mask_show, hotkey_mask_store);
1517
1518 /* sysfs hotkey bios_enabled ------------------------------------------- */
1519 static ssize_t hotkey_bios_enabled_show(struct device *dev,
1520 struct device_attribute *attr,
1521 char *buf)
1522 {
1523 return snprintf(buf, PAGE_SIZE, "%d\n", hotkey_orig_status);
1524 }
1525
1526 static struct device_attribute dev_attr_hotkey_bios_enabled =
1527 __ATTR(hotkey_bios_enabled, S_IRUGO, hotkey_bios_enabled_show, NULL);
1528
1529 /* sysfs hotkey bios_mask ---------------------------------------------- */
1530 static ssize_t hotkey_bios_mask_show(struct device *dev,
1531 struct device_attribute *attr,
1532 char *buf)
1533 {
1534 return snprintf(buf, PAGE_SIZE, "0x%08x\n", hotkey_orig_mask);
1535 }
1536
1537 static struct device_attribute dev_attr_hotkey_bios_mask =
1538 __ATTR(hotkey_bios_mask, S_IRUGO, hotkey_bios_mask_show, NULL);
1539
1540 /* sysfs hotkey all_mask ----------------------------------------------- */
1541 static ssize_t hotkey_all_mask_show(struct device *dev,
1542 struct device_attribute *attr,
1543 char *buf)
1544 {
1545 return snprintf(buf, PAGE_SIZE, "0x%08x\n",
1546 hotkey_all_mask | hotkey_source_mask);
1547 }
1548
1549 static struct device_attribute dev_attr_hotkey_all_mask =
1550 __ATTR(hotkey_all_mask, S_IRUGO, hotkey_all_mask_show, NULL);
1551
1552 /* sysfs hotkey recommended_mask --------------------------------------- */
1553 static ssize_t hotkey_recommended_mask_show(struct device *dev,
1554 struct device_attribute *attr,
1555 char *buf)
1556 {
1557 return snprintf(buf, PAGE_SIZE, "0x%08x\n",
1558 (hotkey_all_mask | hotkey_source_mask)
1559 & ~hotkey_reserved_mask);
1560 }
1561
1562 static struct device_attribute dev_attr_hotkey_recommended_mask =
1563 __ATTR(hotkey_recommended_mask, S_IRUGO,
1564 hotkey_recommended_mask_show, NULL);
1565
1566 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
1567
1568 /* sysfs hotkey hotkey_source_mask ------------------------------------- */
1569 static ssize_t hotkey_source_mask_show(struct device *dev,
1570 struct device_attribute *attr,
1571 char *buf)
1572 {
1573 return snprintf(buf, PAGE_SIZE, "0x%08x\n", hotkey_source_mask);
1574 }
1575
1576 static ssize_t hotkey_source_mask_store(struct device *dev,
1577 struct device_attribute *attr,
1578 const char *buf, size_t count)
1579 {
1580 unsigned long t;
1581
1582 if (parse_strtoul(buf, 0xffffffffUL, &t) ||
1583 ((t & ~TPACPI_HKEY_NVRAM_KNOWN_MASK) != 0))
1584 return -EINVAL;
1585
1586 if (mutex_lock_interruptible(&hotkey_mutex))
1587 return -ERESTARTSYS;
1588
1589 HOTKEY_CONFIG_CRITICAL_START
1590 hotkey_source_mask = t;
1591 HOTKEY_CONFIG_CRITICAL_END
1592
1593 hotkey_poll_setup(1);
1594
1595 mutex_unlock(&hotkey_mutex);
1596
1597 return count;
1598 }
1599
1600 static struct device_attribute dev_attr_hotkey_source_mask =
1601 __ATTR(hotkey_source_mask, S_IWUSR | S_IRUGO,
1602 hotkey_source_mask_show, hotkey_source_mask_store);
1603
1604 /* sysfs hotkey hotkey_poll_freq --------------------------------------- */
1605 static ssize_t hotkey_poll_freq_show(struct device *dev,
1606 struct device_attribute *attr,
1607 char *buf)
1608 {
1609 return snprintf(buf, PAGE_SIZE, "%d\n", hotkey_poll_freq);
1610 }
1611
1612 static ssize_t hotkey_poll_freq_store(struct device *dev,
1613 struct device_attribute *attr,
1614 const char *buf, size_t count)
1615 {
1616 unsigned long t;
1617
1618 if (parse_strtoul(buf, 25, &t))
1619 return -EINVAL;
1620
1621 if (mutex_lock_interruptible(&hotkey_mutex))
1622 return -ERESTARTSYS;
1623
1624 hotkey_poll_freq = t;
1625
1626 hotkey_poll_setup(1);
1627 mutex_unlock(&hotkey_mutex);
1628
1629 return count;
1630 }
1631
1632 static struct device_attribute dev_attr_hotkey_poll_freq =
1633 __ATTR(hotkey_poll_freq, S_IWUSR | S_IRUGO,
1634 hotkey_poll_freq_show, hotkey_poll_freq_store);
1635
1636 #endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
1637
1638 /* sysfs hotkey radio_sw ----------------------------------------------- */
1639 static ssize_t hotkey_radio_sw_show(struct device *dev,
1640 struct device_attribute *attr,
1641 char *buf)
1642 {
1643 int res, s;
1644 res = hotkey_get_wlsw(&s);
1645 if (res < 0)
1646 return res;
1647
1648 return snprintf(buf, PAGE_SIZE, "%d\n", !!s);
1649 }
1650
1651 static struct device_attribute dev_attr_hotkey_radio_sw =
1652 __ATTR(hotkey_radio_sw, S_IRUGO, hotkey_radio_sw_show, NULL);
1653
1654 /* sysfs hotkey report_mode -------------------------------------------- */
1655 static ssize_t hotkey_report_mode_show(struct device *dev,
1656 struct device_attribute *attr,
1657 char *buf)
1658 {
1659 return snprintf(buf, PAGE_SIZE, "%d\n",
1660 (hotkey_report_mode != 0) ? hotkey_report_mode : 1);
1661 }
1662
1663 static struct device_attribute dev_attr_hotkey_report_mode =
1664 __ATTR(hotkey_report_mode, S_IRUGO, hotkey_report_mode_show, NULL);
1665
1666 /* --------------------------------------------------------------------- */
1667
1668 static struct attribute *hotkey_attributes[] __initdata = {
1669 &dev_attr_hotkey_enable.attr,
1670 &dev_attr_hotkey_bios_enabled.attr,
1671 &dev_attr_hotkey_report_mode.attr,
1672 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
1673 &dev_attr_hotkey_mask.attr,
1674 &dev_attr_hotkey_all_mask.attr,
1675 &dev_attr_hotkey_recommended_mask.attr,
1676 &dev_attr_hotkey_source_mask.attr,
1677 &dev_attr_hotkey_poll_freq.attr,
1678 #endif
1679 };
1680
1681 static struct attribute *hotkey_mask_attributes[] __initdata = {
1682 &dev_attr_hotkey_bios_mask.attr,
1683 #ifndef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
1684 &dev_attr_hotkey_mask.attr,
1685 &dev_attr_hotkey_all_mask.attr,
1686 &dev_attr_hotkey_recommended_mask.attr,
1687 #endif
1688 };
1689
1690 static int __init hotkey_init(struct ibm_init_struct *iibm)
1691 {
1692 /* Requirements for changing the default keymaps:
1693 *
1694 * 1. Many of the keys are mapped to KEY_RESERVED for very
1695 * good reasons. Do not change them unless you have deep
1696 * knowledge on the IBM and Lenovo ThinkPad firmware for
1697 * the various ThinkPad models. The driver behaves
1698 * differently for KEY_RESERVED: such keys have their
1699 * hot key mask *unset* in mask_recommended, and also
1700 * in the initial hot key mask programmed into the
1701 * firmware at driver load time, which means the firm-
1702 * ware may react very differently if you change them to
1703 * something else;
1704 *
1705 * 2. You must be subscribed to the linux-thinkpad and
1706 * ibm-acpi-devel mailing lists, and you should read the
1707 * list archives since 2007 if you want to change the
1708 * keymaps. This requirement exists so that you will
1709 * know the past history of problems with the thinkpad-
1710 * acpi driver keymaps, and also that you will be
1711 * listening to any bug reports;
1712 *
1713 * 3. Do not send thinkpad-acpi specific patches directly to
1714 * for merging, *ever*. Send them to the linux-acpi
1715 * mailinglist for comments. Merging is to be done only
1716 * through acpi-test and the ACPI maintainer.
1717 *
1718 * If the above is too much to ask, don't change the keymap.
1719 * Ask the thinkpad-acpi maintainer to do it, instead.
1720 */
1721 static u16 ibm_keycode_map[] __initdata = {
1722 /* Scan Codes 0x00 to 0x0B: ACPI HKEY FN+F1..F12 */
1723 KEY_FN_F1, KEY_FN_F2, KEY_COFFEE, KEY_SLEEP,
1724 KEY_WLAN, KEY_FN_F6, KEY_SWITCHVIDEOMODE, KEY_FN_F8,
1725 KEY_FN_F9, KEY_FN_F10, KEY_FN_F11, KEY_SUSPEND,
1726
1727 /* Scan codes 0x0C to 0x1F: Other ACPI HKEY hot keys */
1728 KEY_UNKNOWN, /* 0x0C: FN+BACKSPACE */
1729 KEY_UNKNOWN, /* 0x0D: FN+INSERT */
1730 KEY_UNKNOWN, /* 0x0E: FN+DELETE */
1731
1732 /* brightness: firmware always reacts to them, unless
1733 * X.org did some tricks in the radeon BIOS scratch
1734 * registers of *some* models */
1735 KEY_RESERVED, /* 0x0F: FN+HOME (brightness up) */
1736 KEY_RESERVED, /* 0x10: FN+END (brightness down) */
1737
1738 /* Thinklight: firmware always react to it */
1739 KEY_RESERVED, /* 0x11: FN+PGUP (thinklight toggle) */
1740
1741 KEY_UNKNOWN, /* 0x12: FN+PGDOWN */
1742 KEY_ZOOM, /* 0x13: FN+SPACE (zoom) */
1743
1744 /* Volume: firmware always react to it and reprograms
1745 * the built-in *extra* mixer. Never map it to control
1746 * another mixer by default. */
1747 KEY_RESERVED, /* 0x14: VOLUME UP */
1748 KEY_RESERVED, /* 0x15: VOLUME DOWN */
1749 KEY_RESERVED, /* 0x16: MUTE */
1750
1751 KEY_VENDOR, /* 0x17: Thinkpad/AccessIBM/Lenovo */
1752
1753 /* (assignments unknown, please report if found) */
1754 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN,
1755 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN,
1756 };
1757 static u16 lenovo_keycode_map[] __initdata = {
1758 /* Scan Codes 0x00 to 0x0B: ACPI HKEY FN+F1..F12 */
1759 KEY_FN_F1, KEY_COFFEE, KEY_BATTERY, KEY_SLEEP,
1760 KEY_WLAN, KEY_FN_F6, KEY_SWITCHVIDEOMODE, KEY_FN_F8,
1761 KEY_FN_F9, KEY_FN_F10, KEY_FN_F11, KEY_SUSPEND,
1762
1763 /* Scan codes 0x0C to 0x1F: Other ACPI HKEY hot keys */
1764 KEY_UNKNOWN, /* 0x0C: FN+BACKSPACE */
1765 KEY_UNKNOWN, /* 0x0D: FN+INSERT */
1766 KEY_UNKNOWN, /* 0x0E: FN+DELETE */
1767
1768 KEY_RESERVED, /* 0x0F: FN+HOME (brightness up) */
1769 KEY_RESERVED, /* 0x10: FN+END (brightness down) */
1770
1771 KEY_RESERVED, /* 0x11: FN+PGUP (thinklight toggle) */
1772
1773 KEY_UNKNOWN, /* 0x12: FN+PGDOWN */
1774 KEY_ZOOM, /* 0x13: FN+SPACE (zoom) */
1775
1776 /* Volume: z60/z61, T60 (BIOS version?): firmware always
1777 * react to it and reprograms the built-in *extra* mixer.
1778 * Never map it to control another mixer by default.
1779 *
1780 * T60?, T61, R60?, R61: firmware and EC tries to send
1781 * these over the regular keyboard, so these are no-ops,
1782 * but there are still weird bugs re. MUTE, so do not
1783 * change unless you get test reports from all Lenovo
1784 * models. May cause the BIOS to interfere with the
1785 * HDA mixer.
1786 */
1787 KEY_RESERVED, /* 0x14: VOLUME UP */
1788 KEY_RESERVED, /* 0x15: VOLUME DOWN */
1789 KEY_RESERVED, /* 0x16: MUTE */
1790
1791 KEY_VENDOR, /* 0x17: Thinkpad/AccessIBM/Lenovo */
1792
1793 /* (assignments unknown, please report if found) */
1794 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN,
1795 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN,
1796 };
1797
1798 #define TPACPI_HOTKEY_MAP_LEN ARRAY_SIZE(ibm_keycode_map)
1799 #define TPACPI_HOTKEY_MAP_SIZE sizeof(ibm_keycode_map)
1800 #define TPACPI_HOTKEY_MAP_TYPESIZE sizeof(ibm_keycode_map[0])
1801
1802 int res, i;
1803 int status;
1804 int hkeyv;
1805
1806 vdbg_printk(TPACPI_DBG_INIT, "initializing hotkey subdriver\n");
1807
1808 BUG_ON(!tpacpi_inputdev);
1809 BUG_ON(tpacpi_inputdev->open != NULL ||
1810 tpacpi_inputdev->close != NULL);
1811
1812 IBM_ACPIHANDLE_INIT(hkey);
1813 mutex_init(&hotkey_mutex);
1814
1815 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
1816 mutex_init(&hotkey_thread_mutex);
1817 mutex_init(&hotkey_thread_data_mutex);
1818 #endif
1819
1820 /* hotkey not supported on 570 */
1821 tp_features.hotkey = hkey_handle != NULL;
1822
1823 vdbg_printk(TPACPI_DBG_INIT, "hotkeys are %s\n",
1824 str_supported(tp_features.hotkey));
1825
1826 if (tp_features.hotkey) {
1827 hotkey_dev_attributes = create_attr_set(10, NULL);
1828 if (!hotkey_dev_attributes)
1829 return -ENOMEM;
1830 res = add_many_to_attr_set(hotkey_dev_attributes,
1831 hotkey_attributes,
1832 ARRAY_SIZE(hotkey_attributes));
1833 if (res)
1834 return res;
1835
1836 /* mask not supported on 570, 600e/x, 770e, 770x, A21e, A2xm/p,
1837 A30, R30, R31, T20-22, X20-21, X22-24. Detected by checking
1838 for HKEY interface version 0x100 */
1839 if (acpi_evalf(hkey_handle, &hkeyv, "MHKV", "qd")) {
1840 if ((hkeyv >> 8) != 1) {
1841 printk(IBM_ERR "unknown version of the "
1842 "HKEY interface: 0x%x\n", hkeyv);
1843 printk(IBM_ERR "please report this to %s\n",
1844 IBM_MAIL);
1845 } else {
1846 /*
1847 * MHKV 0x100 in A31, R40, R40e,
1848 * T4x, X31, and later
1849 */
1850 tp_features.hotkey_mask = 1;
1851 }
1852 }
1853
1854 vdbg_printk(TPACPI_DBG_INIT, "hotkey masks are %s\n",
1855 str_supported(tp_features.hotkey_mask));
1856
1857 if (tp_features.hotkey_mask) {
1858 if (!acpi_evalf(hkey_handle, &hotkey_all_mask,
1859 "MHKA", "qd")) {
1860 printk(IBM_ERR
1861 "missing MHKA handler, "
1862 "please report this to %s\n",
1863 IBM_MAIL);
1864 hotkey_all_mask = 0x080cU; /* FN+F12, FN+F4, FN+F3 */
1865 }
1866 }
1867
1868 /* hotkey_source_mask *must* be zero for
1869 * the first hotkey_mask_get */
1870 res = hotkey_status_get(&hotkey_orig_status);
1871 if (!res && tp_features.hotkey_mask) {
1872 res = hotkey_mask_get();
1873 hotkey_orig_mask = hotkey_mask;
1874 if (!res) {
1875 res = add_many_to_attr_set(
1876 hotkey_dev_attributes,
1877 hotkey_mask_attributes,
1878 ARRAY_SIZE(hotkey_mask_attributes));
1879 }
1880 }
1881
1882 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
1883 if (tp_features.hotkey_mask) {
1884 hotkey_source_mask = TPACPI_HKEY_NVRAM_GOOD_MASK
1885 & ~hotkey_all_mask;
1886 } else {
1887 hotkey_source_mask = TPACPI_HKEY_NVRAM_GOOD_MASK;
1888 }
1889
1890 vdbg_printk(TPACPI_DBG_INIT,
1891 "hotkey source mask 0x%08x, polling freq %d\n",
1892 hotkey_source_mask, hotkey_poll_freq);
1893 #endif
1894
1895 /* Not all thinkpads have a hardware radio switch */
1896 if (!res && acpi_evalf(hkey_handle, &status, "WLSW", "qd")) {
1897 tp_features.hotkey_wlsw = 1;
1898 printk(IBM_INFO
1899 "radio switch found; radios are %s\n",
1900 enabled(status, 0));
1901 res = add_to_attr_set(hotkey_dev_attributes,
1902 &dev_attr_hotkey_radio_sw.attr);
1903 }
1904
1905 if (!res)
1906 res = register_attr_set_with_sysfs(
1907 hotkey_dev_attributes,
1908 &tpacpi_pdev->dev.kobj);
1909 if (res)
1910 return res;
1911
1912 /* Set up key map */
1913
1914 hotkey_keycode_map = kmalloc(TPACPI_HOTKEY_MAP_SIZE,
1915 GFP_KERNEL);
1916 if (!hotkey_keycode_map) {
1917 printk(IBM_ERR "failed to allocate memory for key map\n");
1918 return -ENOMEM;
1919 }
1920
1921 if (thinkpad_id.vendor == PCI_VENDOR_ID_LENOVO) {
1922 dbg_printk(TPACPI_DBG_INIT,
1923 "using Lenovo default hot key map\n");
1924 memcpy(hotkey_keycode_map, &lenovo_keycode_map,
1925 TPACPI_HOTKEY_MAP_SIZE);
1926 } else {
1927 dbg_printk(TPACPI_DBG_INIT,
1928 "using IBM default hot key map\n");
1929 memcpy(hotkey_keycode_map, &ibm_keycode_map,
1930 TPACPI_HOTKEY_MAP_SIZE);
1931 }
1932
1933 set_bit(EV_KEY, tpacpi_inputdev->evbit);
1934 set_bit(EV_MSC, tpacpi_inputdev->evbit);
1935 set_bit(MSC_SCAN, tpacpi_inputdev->mscbit);
1936 tpacpi_inputdev->keycodesize = TPACPI_HOTKEY_MAP_TYPESIZE;
1937 tpacpi_inputdev->keycodemax = TPACPI_HOTKEY_MAP_LEN;
1938 tpacpi_inputdev->keycode = hotkey_keycode_map;
1939 for (i = 0; i < TPACPI_HOTKEY_MAP_LEN; i++) {
1940 if (hotkey_keycode_map[i] != KEY_RESERVED) {
1941 set_bit(hotkey_keycode_map[i],
1942 tpacpi_inputdev->keybit);
1943 } else {
1944 if (i < sizeof(hotkey_reserved_mask)*8)
1945 hotkey_reserved_mask |= 1 << i;
1946 }
1947 }
1948
1949 if (tp_features.hotkey_wlsw) {
1950 set_bit(EV_SW, tpacpi_inputdev->evbit);
1951 set_bit(SW_RADIO, tpacpi_inputdev->swbit);
1952 }
1953
1954 dbg_printk(TPACPI_DBG_INIT,
1955 "enabling hot key handling\n");
1956 res = hotkey_status_set(1);
1957 if (res)
1958 return res;
1959 res = hotkey_mask_set(((hotkey_all_mask | hotkey_source_mask)
1960 & ~hotkey_reserved_mask)
1961 | hotkey_orig_mask);
1962 if (res < 0 && res != -ENXIO)
1963 return res;
1964
1965 dbg_printk(TPACPI_DBG_INIT,
1966 "legacy hot key reporting over procfs %s\n",
1967 (hotkey_report_mode < 2) ?
1968 "enabled" : "disabled");
1969
1970 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
1971 tpacpi_inputdev->open = &hotkey_inputdev_open;
1972 tpacpi_inputdev->close = &hotkey_inputdev_close;
1973
1974 hotkey_poll_setup_safe(1);
1975 #endif
1976 }
1977
1978 return (tp_features.hotkey)? 0 : 1;
1979 }
1980
1981 static void hotkey_exit(void)
1982 {
1983 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
1984 hotkey_poll_stop_sync();
1985 #endif
1986
1987 if (tp_features.hotkey) {
1988 dbg_printk(TPACPI_DBG_EXIT, "restoring original hot key mask\n");
1989 /* no short-circuit boolean operator below! */
1990 if ((hotkey_mask_set(hotkey_orig_mask) |
1991 hotkey_status_set(hotkey_orig_status)) != 0)
1992 printk(IBM_ERR "failed to restore hot key mask to BIOS defaults\n");
1993 }
1994
1995 if (hotkey_dev_attributes) {
1996 delete_attr_set(hotkey_dev_attributes, &tpacpi_pdev->dev.kobj);
1997 hotkey_dev_attributes = NULL;
1998 }
1999 }
2000
2001 static void hotkey_notify(struct ibm_struct *ibm, u32 event)
2002 {
2003 u32 hkey;
2004 unsigned int scancode;
2005 int send_acpi_ev;
2006 int ignore_acpi_ev;
2007
2008 if (event != 0x80) {
2009 printk(IBM_ERR "unknown HKEY notification event %d\n", event);
2010 /* forward it to userspace, maybe it knows how to handle it */
2011 acpi_bus_generate_netlink_event(ibm->acpi->device->pnp.device_class,
2012 ibm->acpi->device->dev.bus_id,
2013 event, 0);
2014 return;
2015 }
2016
2017 while (1) {
2018 if (!acpi_evalf(hkey_handle, &hkey, "MHKP", "d")) {
2019 printk(IBM_ERR "failed to retrieve HKEY event\n");
2020 return;
2021 }
2022
2023 if (hkey == 0) {
2024 /* queue empty */
2025 return;
2026 }
2027
2028 send_acpi_ev = 0;
2029 ignore_acpi_ev = 0;
2030
2031 switch (hkey >> 12) {
2032 case 1:
2033 /* 0x1000-0x1FFF: key presses */
2034 scancode = hkey & 0xfff;
2035 if (scancode > 0 && scancode < 0x21) {
2036 scancode--;
2037 if (!(hotkey_source_mask & (1 << scancode))) {
2038 tpacpi_input_send_key(scancode);
2039 } else {
2040 ignore_acpi_ev = 1;
2041 }
2042 } else {
2043 printk(IBM_ERR
2044 "hotkey 0x%04x out of range for keyboard map\n",
2045 hkey);
2046 send_acpi_ev = 1;
2047 }
2048 break;
2049 case 5:
2050 /* 0x5000-0x5FFF: LID */
2051 /* we don't handle it through this path, just
2052 * eat up known LID events */
2053 if (hkey != 0x5001 && hkey != 0x5002) {
2054 printk(IBM_ERR
2055 "unknown LID-related HKEY event: 0x%04x\n",
2056 hkey);
2057 send_acpi_ev = 1;
2058 } else {
2059 ignore_acpi_ev = 1;
2060 }
2061 break;
2062 case 7:
2063 /* 0x7000-0x7FFF: misc */
2064 if (tp_features.hotkey_wlsw && hkey == 0x7000) {
2065 tpacpi_input_send_radiosw();
2066 break;
2067 }
2068 /* fallthrough to default */
2069 default:
2070 /* case 2: dock-related */
2071 /* 0x2305 - T43 waking up due to bay lever eject while aslept */
2072 /* case 3: ultra-bay related. maybe bay in dock? */
2073 /* 0x3003 - T43 after wake up by bay lever eject (0x2305) */
2074 printk(IBM_NOTICE "unhandled HKEY event 0x%04x\n", hkey);
2075 send_acpi_ev = 1;
2076 }
2077
2078 /* Legacy events */
2079 if (!ignore_acpi_ev && (send_acpi_ev || hotkey_report_mode < 2)) {
2080 acpi_bus_generate_proc_event(ibm->acpi->device, event, hkey);
2081 }
2082
2083 /* netlink events */
2084 if (!ignore_acpi_ev && send_acpi_ev) {
2085 acpi_bus_generate_netlink_event(ibm->acpi->device->pnp.device_class,
2086 ibm->acpi->device->dev.bus_id,
2087 event, hkey);
2088 }
2089 }
2090 }
2091
2092 static void hotkey_resume(void)
2093 {
2094 if (hotkey_mask_get())
2095 printk(IBM_ERR "error while trying to read hot key mask from firmware\n");
2096 tpacpi_input_send_radiosw();
2097 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
2098 hotkey_poll_setup_safe(0);
2099 #endif
2100 }
2101
2102 /* procfs -------------------------------------------------------------- */
2103 static int hotkey_read(char *p)
2104 {
2105 int res, status;
2106 int len = 0;
2107
2108 if (!tp_features.hotkey) {
2109 len += sprintf(p + len, "status:\t\tnot supported\n");
2110 return len;
2111 }
2112
2113 if (mutex_lock_interruptible(&hotkey_mutex))
2114 return -ERESTARTSYS;
2115 res = hotkey_status_get(&status);
2116 if (!res)
2117 res = hotkey_mask_get();
2118 mutex_unlock(&hotkey_mutex);
2119 if (res)
2120 return res;
2121
2122 len += sprintf(p + len, "status:\t\t%s\n", enabled(status, 0));
2123 if (tp_features.hotkey_mask) {
2124 len += sprintf(p + len, "mask:\t\t0x%08x\n", hotkey_mask);
2125 len += sprintf(p + len,
2126 "commands:\tenable, disable, reset, <mask>\n");
2127 } else {
2128 len += sprintf(p + len, "mask:\t\tnot supported\n");
2129 len += sprintf(p + len, "commands:\tenable, disable, reset\n");
2130 }
2131
2132 return len;
2133 }
2134
2135 static int hotkey_write(char *buf)
2136 {
2137 int res, status;
2138 u32 mask;
2139 char *cmd;
2140
2141 if (!tp_features.hotkey)
2142 return -ENODEV;
2143
2144 if (mutex_lock_interruptible(&hotkey_mutex))
2145 return -ERESTARTSYS;
2146
2147 status = -1;
2148 mask = hotkey_mask;
2149
2150 res = 0;
2151 while ((cmd = next_cmd(&buf))) {
2152 if (strlencmp(cmd, "enable") == 0) {
2153 status = 1;
2154 } else if (strlencmp(cmd, "disable") == 0) {
2155 status = 0;
2156 } else if (strlencmp(cmd, "reset") == 0) {
2157 status = hotkey_orig_status;
2158 mask = hotkey_orig_mask;
2159 } else if (sscanf(cmd, "0x%x", &mask) == 1) {
2160 /* mask set */
2161 } else if (sscanf(cmd, "%x", &mask) == 1) {
2162 /* mask set */
2163 } else {
2164 res = -EINVAL;
2165 goto errexit;
2166 }
2167 }
2168 if (status != -1)
2169 res = hotkey_status_set(status);
2170
2171 if (!res && mask != hotkey_mask)
2172 res = hotkey_mask_set(mask);
2173
2174 errexit:
2175 mutex_unlock(&hotkey_mutex);
2176 return res;
2177 }
2178
2179 static const struct acpi_device_id ibm_htk_device_ids[] = {
2180 {IBM_HKEY_HID, 0},
2181 {"", 0},
2182 };
2183
2184 static struct tp_acpi_drv_struct ibm_hotkey_acpidriver = {
2185 .hid = ibm_htk_device_ids,
2186 .notify = hotkey_notify,
2187 .handle = &hkey_handle,
2188 .type = ACPI_DEVICE_NOTIFY,
2189 };
2190
2191 static struct ibm_struct hotkey_driver_data = {
2192 .name = "hotkey",
2193 .read = hotkey_read,
2194 .write = hotkey_write,
2195 .exit = hotkey_exit,
2196 .resume = hotkey_resume,
2197 .acpi = &ibm_hotkey_acpidriver,
2198 };
2199
2200 /*************************************************************************
2201 * Bluetooth subdriver
2202 */
2203
2204 enum {
2205 /* ACPI GBDC/SBDC bits */
2206 TP_ACPI_BLUETOOTH_HWPRESENT = 0x01, /* Bluetooth hw available */
2207 TP_ACPI_BLUETOOTH_RADIOSSW = 0x02, /* Bluetooth radio enabled */
2208 TP_ACPI_BLUETOOTH_UNK = 0x04, /* unknown function */
2209 };
2210
2211 static int bluetooth_get_radiosw(void);
2212 static int bluetooth_set_radiosw(int radio_on);
2213
2214 /* sysfs bluetooth enable ---------------------------------------------- */
2215 static ssize_t bluetooth_enable_show(struct device *dev,
2216 struct device_attribute *attr,
2217 char *buf)
2218 {
2219 int status;
2220
2221 status = bluetooth_get_radiosw();
2222 if (status < 0)
2223 return status;
2224
2225 return snprintf(buf, PAGE_SIZE, "%d\n", status ? 1 : 0);
2226 }
2227
2228 static ssize_t bluetooth_enable_store(struct device *dev,
2229 struct device_attribute *attr,
2230 const char *buf, size_t count)
2231 {
2232 unsigned long t;
2233 int res;
2234
2235 if (parse_strtoul(buf, 1, &t))
2236 return -EINVAL;
2237
2238 res = bluetooth_set_radiosw(t);
2239
2240 return (res) ? res : count;
2241 }
2242
2243 static struct device_attribute dev_attr_bluetooth_enable =
2244 __ATTR(bluetooth_enable, S_IWUSR | S_IRUGO,
2245 bluetooth_enable_show, bluetooth_enable_store);
2246
2247 /* --------------------------------------------------------------------- */
2248
2249 static struct attribute *bluetooth_attributes[] = {
2250 &dev_attr_bluetooth_enable.attr,
2251 NULL
2252 };
2253
2254 static const struct attribute_group bluetooth_attr_group = {
2255 .attrs = bluetooth_attributes,
2256 };
2257
2258 static int __init bluetooth_init(struct ibm_init_struct *iibm)
2259 {
2260 int res;
2261 int status = 0;
2262
2263 vdbg_printk(TPACPI_DBG_INIT, "initializing bluetooth subdriver\n");
2264
2265 IBM_ACPIHANDLE_INIT(hkey);
2266
2267 /* bluetooth not supported on 570, 600e/x, 770e, 770x, A21e, A2xm/p,
2268 G4x, R30, R31, R40e, R50e, T20-22, X20-21 */
2269 tp_features.bluetooth = hkey_handle &&
2270 acpi_evalf(hkey_handle, &status, "GBDC", "qd");
2271
2272 vdbg_printk(TPACPI_DBG_INIT, "bluetooth is %s, status 0x%02x\n",
2273 str_supported(tp_features.bluetooth),
2274 status);
2275
2276 if (tp_features.bluetooth) {
2277 if (!(status & TP_ACPI_BLUETOOTH_HWPRESENT)) {
2278 /* no bluetooth hardware present in system */
2279 tp_features.bluetooth = 0;
2280 dbg_printk(TPACPI_DBG_INIT,
2281 "bluetooth hardware not installed\n");
2282 } else {
2283 res = sysfs_create_group(&tpacpi_pdev->dev.kobj,
2284 &bluetooth_attr_group);
2285 if (res)
2286 return res;
2287 }
2288 }
2289
2290 return (tp_features.bluetooth)? 0 : 1;
2291 }
2292
2293 static void bluetooth_exit(void)
2294 {
2295 sysfs_remove_group(&tpacpi_pdev->dev.kobj,
2296 &bluetooth_attr_group);
2297 }
2298
2299 static int bluetooth_get_radiosw(void)
2300 {
2301 int status;
2302
2303 if (!tp_features.bluetooth)
2304 return -ENODEV;
2305
2306 if (!acpi_evalf(hkey_handle, &status, "GBDC", "d"))
2307 return -EIO;
2308
2309 return ((status & TP_ACPI_BLUETOOTH_RADIOSSW) != 0);
2310 }
2311
2312 static int bluetooth_set_radiosw(int radio_on)
2313 {
2314 int status;
2315
2316 if (!tp_features.bluetooth)
2317 return -ENODEV;
2318
2319 if (!acpi_evalf(hkey_handle, &status, "GBDC", "d"))
2320 return -EIO;
2321 if (radio_on)
2322 status |= TP_ACPI_BLUETOOTH_RADIOSSW;
2323 else
2324 status &= ~TP_ACPI_BLUETOOTH_RADIOSSW;
2325 if (!acpi_evalf(hkey_handle, NULL, "SBDC", "vd", status))
2326 return -EIO;
2327
2328 return 0;
2329 }
2330
2331 /* procfs -------------------------------------------------------------- */
2332 static int bluetooth_read(char *p)
2333 {
2334 int len = 0;
2335 int status = bluetooth_get_radiosw();
2336
2337 if (!tp_features.bluetooth)
2338 len += sprintf(p + len, "status:\t\tnot supported\n");
2339 else {
2340 len += sprintf(p + len, "status:\t\t%s\n",
2341 (status)? "enabled" : "disabled");
2342 len += sprintf(p + len, "commands:\tenable, disable\n");
2343 }
2344
2345 return len;
2346 }
2347
2348 static int bluetooth_write(char *buf)
2349 {
2350 char *cmd;
2351
2352 if (!tp_features.bluetooth)
2353 return -ENODEV;
2354
2355 while ((cmd = next_cmd(&buf))) {
2356 if (strlencmp(cmd, "enable") == 0) {
2357 bluetooth_set_radiosw(1);
2358 } else if (strlencmp(cmd, "disable") == 0) {
2359 bluetooth_set_radiosw(0);
2360 } else
2361 return -EINVAL;
2362 }
2363
2364 return 0;
2365 }
2366
2367 static struct ibm_struct bluetooth_driver_data = {
2368 .name = "bluetooth",
2369 .read = bluetooth_read,
2370 .write = bluetooth_write,
2371 .exit = bluetooth_exit,
2372 };
2373
2374 /*************************************************************************
2375 * Wan subdriver
2376 */
2377
2378 enum {
2379 /* ACPI GWAN/SWAN bits */
2380 TP_ACPI_WANCARD_HWPRESENT = 0x01, /* Wan hw available */
2381 TP_ACPI_WANCARD_RADIOSSW = 0x02, /* Wan radio enabled */
2382 TP_ACPI_WANCARD_UNK = 0x04, /* unknown function */
2383 };
2384
2385 static int wan_get_radiosw(void);
2386 static int wan_set_radiosw(int radio_on);
2387
2388 /* sysfs wan enable ---------------------------------------------------- */
2389 static ssize_t wan_enable_show(struct device *dev,
2390 struct device_attribute *attr,
2391 char *buf)
2392 {
2393 int status;
2394
2395 status = wan_get_radiosw();
2396 if (status < 0)
2397 return status;
2398
2399 return snprintf(buf, PAGE_SIZE, "%d\n", status ? 1 : 0);
2400 }
2401
2402 static ssize_t wan_enable_store(struct device *dev,
2403 struct device_attribute *attr,
2404 const char *buf, size_t count)
2405 {
2406 unsigned long t;
2407 int res;
2408
2409 if (parse_strtoul(buf, 1, &t))
2410 return -EINVAL;
2411
2412 res = wan_set_radiosw(t);
2413
2414 return (res) ? res : count;
2415 }
2416
2417 static struct device_attribute dev_attr_wan_enable =
2418 __ATTR(wwan_enable, S_IWUSR | S_IRUGO,
2419 wan_enable_show, wan_enable_store);
2420
2421 /* --------------------------------------------------------------------- */
2422
2423 static struct attribute *wan_attributes[] = {
2424 &dev_attr_wan_enable.attr,
2425 NULL
2426 };
2427
2428 static const struct attribute_group wan_attr_group = {
2429 .attrs = wan_attributes,
2430 };
2431
2432 static int __init wan_init(struct ibm_init_struct *iibm)
2433 {
2434 int res;
2435 int status = 0;
2436
2437 vdbg_printk(TPACPI_DBG_INIT, "initializing wan subdriver\n");
2438
2439 IBM_ACPIHANDLE_INIT(hkey);
2440
2441 tp_features.wan = hkey_handle &&
2442 acpi_evalf(hkey_handle, &status, "GWAN", "qd");
2443
2444 vdbg_printk(TPACPI_DBG_INIT, "wan is %s, status 0x%02x\n",
2445 str_supported(tp_features.wan),
2446 status);
2447
2448 if (tp_features.wan) {
2449 if (!(status & TP_ACPI_WANCARD_HWPRESENT)) {
2450 /* no wan hardware present in system */
2451 tp_features.wan = 0;
2452 dbg_printk(TPACPI_DBG_INIT,
2453 "wan hardware not installed\n");
2454 } else {
2455 res = sysfs_create_group(&tpacpi_pdev->dev.kobj,
2456 &wan_attr_group);
2457 if (res)
2458 return res;
2459 }
2460 }
2461
2462 return (tp_features.wan)? 0 : 1;
2463 }
2464
2465 static void wan_exit(void)
2466 {
2467 sysfs_remove_group(&tpacpi_pdev->dev.kobj,
2468 &wan_attr_group);
2469 }
2470
2471 static int wan_get_radiosw(void)
2472 {
2473 int status;
2474
2475 if (!tp_features.wan)
2476 return -ENODEV;
2477
2478 if (!acpi_evalf(hkey_handle, &status, "GWAN", "d"))
2479 return -EIO;
2480
2481 return ((status & TP_ACPI_WANCARD_RADIOSSW) != 0);
2482 }
2483
2484 static int wan_set_radiosw(int radio_on)
2485 {
2486 int status;
2487
2488 if (!tp_features.wan)
2489 return -ENODEV;
2490
2491 if (!acpi_evalf(hkey_handle, &status, "GWAN", "d"))
2492 return -EIO;
2493 if (radio_on)
2494 status |= TP_ACPI_WANCARD_RADIOSSW;
2495 else
2496 status &= ~TP_ACPI_WANCARD_RADIOSSW;
2497 if (!acpi_evalf(hkey_handle, NULL, "SWAN", "vd", status))
2498 return -EIO;
2499
2500 return 0;
2501 }
2502
2503 /* procfs -------------------------------------------------------------- */
2504 static int wan_read(char *p)
2505 {
2506 int len = 0;
2507 int status = wan_get_radiosw();
2508
2509 if (!tp_features.wan)
2510 len += sprintf(p + len, "status:\t\tnot supported\n");
2511 else {
2512 len += sprintf(p + len, "status:\t\t%s\n",
2513 (status)? "enabled" : "disabled");
2514 len += sprintf(p + len, "commands:\tenable, disable\n");
2515 }
2516
2517 return len;
2518 }
2519
2520 static int wan_write(char *buf)
2521 {
2522 char *cmd;
2523
2524 if (!tp_features.wan)
2525 return -ENODEV;
2526
2527 while ((cmd = next_cmd(&buf))) {
2528 if (strlencmp(cmd, "enable") == 0) {
2529 wan_set_radiosw(1);
2530 } else if (strlencmp(cmd, "disable") == 0) {
2531 wan_set_radiosw(0);
2532 } else
2533 return -EINVAL;
2534 }
2535
2536 return 0;
2537 }
2538
2539 static struct ibm_struct wan_driver_data = {
2540 .name = "wan",
2541 .read = wan_read,
2542 .write = wan_write,
2543 .exit = wan_exit,
2544 .flags.experimental = 1,
2545 };
2546
2547 /*************************************************************************
2548 * Video subdriver
2549 */
2550
2551 enum video_access_mode {
2552 TPACPI_VIDEO_NONE = 0,
2553 TPACPI_VIDEO_570, /* 570 */
2554 TPACPI_VIDEO_770, /* 600e/x, 770e, 770x */
2555 TPACPI_VIDEO_NEW, /* all others */
2556 };
2557
2558 enum { /* video status flags, based on VIDEO_570 */
2559 TP_ACPI_VIDEO_S_LCD = 0x01, /* LCD output enabled */
2560 TP_ACPI_VIDEO_S_CRT = 0x02, /* CRT output enabled */
2561 TP_ACPI_VIDEO_S_DVI = 0x08, /* DVI output enabled */
2562 };
2563
2564 enum { /* TPACPI_VIDEO_570 constants */
2565 TP_ACPI_VIDEO_570_PHSCMD = 0x87, /* unknown magic constant :( */
2566 TP_ACPI_VIDEO_570_PHSMASK = 0x03, /* PHS bits that map to
2567 * video_status_flags */
2568 TP_ACPI_VIDEO_570_PHS2CMD = 0x8b, /* unknown magic constant :( */
2569 TP_ACPI_VIDEO_570_PHS2SET = 0x80, /* unknown magic constant :( */
2570 };
2571
2572 static enum video_access_mode video_supported;
2573 static int video_orig_autosw;
2574
2575 static int video_autosw_get(void);
2576 static int video_autosw_set(int enable);
2577
2578 IBM_HANDLE(vid, root, "\\_SB.PCI.AGP.VGA", /* 570 */
2579 "\\_SB.PCI0.AGP0.VID0", /* 600e/x, 770x */
2580 "\\_SB.PCI0.VID0", /* 770e */
2581 "\\_SB.PCI0.VID", /* A21e, G4x, R50e, X30, X40 */
2582 "\\_SB.PCI0.AGP.VID", /* all others */
2583 ); /* R30, R31 */
2584
2585 IBM_HANDLE(vid2, root, "\\_SB.PCI0.AGPB.VID"); /* G41 */
2586
2587 static int __init video_init(struct ibm_init_struct *iibm)
2588 {
2589 int ivga;
2590
2591 vdbg_printk(TPACPI_DBG_INIT, "initializing video subdriver\n");
2592
2593 IBM_ACPIHANDLE_INIT(vid);
2594 IBM_ACPIHANDLE_INIT(vid2);
2595
2596 if (vid2_handle && acpi_evalf(NULL, &ivga, "\\IVGA", "d") && ivga)
2597 /* G41, assume IVGA doesn't change */
2598 vid_handle = vid2_handle;
2599
2600 if (!vid_handle)
2601 /* video switching not supported on R30, R31 */
2602 video_supported = TPACPI_VIDEO_NONE;
2603 else if (acpi_evalf(vid_handle, &video_orig_autosw, "SWIT", "qd"))
2604 /* 570 */
2605 video_supported = TPACPI_VIDEO_570;
2606 else if (acpi_evalf(vid_handle, &video_orig_autosw, "^VADL", "qd"))
2607 /* 600e/x, 770e, 770x */
2608 video_supported = TPACPI_VIDEO_770;
2609 else
2610 /* all others */
2611 video_supported = TPACPI_VIDEO_NEW;
2612
2613 vdbg_printk(TPACPI_DBG_INIT, "video is %s, mode %d\n",
2614 str_supported(video_supported != TPACPI_VIDEO_NONE),
2615 video_supported);
2616
2617 return (video_supported != TPACPI_VIDEO_NONE)? 0 : 1;
2618 }
2619
2620 static void video_exit(void)
2621 {
2622 dbg_printk(TPACPI_DBG_EXIT,
2623 "restoring original video autoswitch mode\n");
2624 if (video_autosw_set(video_orig_autosw))
2625 printk(IBM_ERR "error while trying to restore original "
2626 "video autoswitch mode\n");
2627 }
2628
2629 static int video_outputsw_get(void)
2630 {
2631 int status = 0;
2632 int i;
2633
2634 switch (video_supported) {
2635 case TPACPI_VIDEO_570:
2636 if (!acpi_evalf(NULL, &i, "\\_SB.PHS", "dd",
2637 TP_ACPI_VIDEO_570_PHSCMD))
2638 return -EIO;
2639 status = i & TP_ACPI_VIDEO_570_PHSMASK;
2640 break;
2641 case TPACPI_VIDEO_770:
2642 if (!acpi_evalf(NULL, &i, "\\VCDL", "d"))
2643 return -EIO;
2644 if (i)
2645 status |= TP_ACPI_VIDEO_S_LCD;
2646 if (!acpi_evalf(NULL, &i, "\\VCDC", "d"))
2647 return -EIO;
2648 if (i)
2649 status |= TP_ACPI_VIDEO_S_CRT;
2650 break;
2651 case TPACPI_VIDEO_NEW:
2652 if (!acpi_evalf(NULL, NULL, "\\VUPS", "vd", 1) ||
2653 !acpi_evalf(NULL, &i, "\\VCDC", "d"))
2654 return -EIO;
2655 if (i)
2656 status |= TP_ACPI_VIDEO_S_CRT;
2657
2658 if (!acpi_evalf(NULL, NULL, "\\VUPS", "vd", 0) ||
2659 !acpi_evalf(NULL, &i, "\\VCDL", "d"))
2660 return -EIO;
2661 if (i)
2662 status |= TP_ACPI_VIDEO_S_LCD;
2663 if (!acpi_evalf(NULL, &i, "\\VCDD", "d"))
2664 return -EIO;
2665 if (i)
2666 status |= TP_ACPI_VIDEO_S_DVI;
2667 break;
2668 default:
2669 return -ENOSYS;
2670 }
2671
2672 return status;
2673 }
2674
2675 static int video_outputsw_set(int status)
2676 {
2677 int autosw;
2678 int res = 0;
2679
2680 switch (video_supported) {
2681 case TPACPI_VIDEO_570:
2682 res = acpi_evalf(NULL, NULL,
2683 "\\_SB.PHS2", "vdd",
2684 TP_ACPI_VIDEO_570_PHS2CMD,
2685 status | TP_ACPI_VIDEO_570_PHS2SET);
2686 break;
2687 case TPACPI_VIDEO_770:
2688 autosw = video_autosw_get();
2689 if (autosw < 0)
2690 return autosw;
2691
2692 res = video_autosw_set(1);
2693 if (res)
2694 return res;
2695 res = acpi_evalf(vid_handle, NULL,
2696 "ASWT", "vdd", status * 0x100, 0);
2697 if (!autosw && video_autosw_set(autosw)) {
2698 printk(IBM_ERR "video auto-switch left enabled due to error\n");
2699 return -EIO;
2700 }
2701 break;
2702 case TPACPI_VIDEO_NEW:
2703 res = acpi_evalf(NULL, NULL, "\\VUPS", "vd", 0x80) &&
2704 acpi_evalf(NULL, NULL, "\\VSDS", "vdd", status, 1);
2705 break;
2706 default:
2707 return -ENOSYS;
2708 }
2709
2710 return (res)? 0 : -EIO;
2711 }
2712
2713 static int video_autosw_get(void)
2714 {
2715 int autosw = 0;
2716
2717 switch (video_supported) {
2718 case TPACPI_VIDEO_570:
2719 if (!acpi_evalf(vid_handle, &autosw, "SWIT", "d"))
2720 return -EIO;
2721 break;
2722 case TPACPI_VIDEO_770:
2723 case TPACPI_VIDEO_NEW:
2724 if (!acpi_evalf(vid_handle, &autosw, "^VDEE", "d"))
2725 return -EIO;
2726 break;
2727 default:
2728 return -ENOSYS;
2729 }
2730
2731 return autosw & 1;
2732 }
2733
2734 static int video_autosw_set(int enable)
2735 {
2736 if (!acpi_evalf(vid_handle, NULL, "_DOS", "vd", (enable)? 1 : 0))
2737 return -EIO;
2738 return 0;
2739 }
2740
2741 static int video_outputsw_cycle(void)
2742 {
2743 int autosw = video_autosw_get();
2744 int res;
2745
2746 if (autosw < 0)
2747 return autosw;
2748
2749 switch (video_supported) {
2750 case TPACPI_VIDEO_570:
2751 res = video_autosw_set(1);
2752 if (res)
2753 return res;
2754 res = acpi_evalf(ec_handle, NULL, "_Q16", "v");
2755 break;
2756 case TPACPI_VIDEO_770:
2757 case TPACPI_VIDEO_NEW:
2758 res = video_autosw_set(1);
2759 if (res)
2760 return res;
2761 res = acpi_evalf(vid_handle, NULL, "VSWT", "v");
2762 break;
2763 default:
2764 return -ENOSYS;
2765 }
2766 if (!autosw && video_autosw_set(autosw)) {
2767 printk(IBM_ERR "video auto-switch left enabled due to error\n");
2768 return -EIO;
2769 }
2770
2771 return (res)? 0 : -EIO;
2772 }
2773
2774 static int video_expand_toggle(void)
2775 {
2776 switch (video_supported) {
2777 case TPACPI_VIDEO_570:
2778 return acpi_evalf(ec_handle, NULL, "_Q17", "v")?
2779 0 : -EIO;
2780 case TPACPI_VIDEO_770:
2781 return acpi_evalf(vid_handle, NULL, "VEXP", "v")?
2782 0 : -EIO;
2783 case TPACPI_VIDEO_NEW:
2784 return acpi_evalf(NULL, NULL, "\\VEXP", "v")?
2785 0 : -EIO;
2786 default:
2787 return -ENOSYS;
2788 }
2789 /* not reached */
2790 }
2791
2792 static int video_read(char *p)
2793 {
2794 int status, autosw;
2795 int len = 0;
2796
2797 if (video_supported == TPACPI_VIDEO_NONE) {
2798 len += sprintf(p + len, "status:\t\tnot supported\n");
2799 return len;
2800 }
2801
2802 status = video_outputsw_get();
2803 if (status < 0)
2804 return status;
2805
2806 autosw = video_autosw_get();
2807 if (autosw < 0)
2808 return autosw;
2809
2810 len += sprintf(p + len, "status:\t\tsupported\n");
2811 len += sprintf(p + len, "lcd:\t\t%s\n", enabled(status, 0));
2812 len += sprintf(p + len, "crt:\t\t%s\n", enabled(status, 1));
2813 if (video_supported == TPACPI_VIDEO_NEW)
2814 len += sprintf(p + len, "dvi:\t\t%s\n", enabled(status, 3));
2815 len += sprintf(p + len, "auto:\t\t%s\n", enabled(autosw, 0));
2816 len += sprintf(p + len, "commands:\tlcd_enable, lcd_disable\n");
2817 len += sprintf(p + len, "commands:\tcrt_enable, crt_disable\n");
2818 if (video_supported == TPACPI_VIDEO_NEW)
2819 len += sprintf(p + len, "commands:\tdvi_enable, dvi_disable\n");
2820 len += sprintf(p + len, "commands:\tauto_enable, auto_disable\n");
2821 len += sprintf(p + len, "commands:\tvideo_switch, expand_toggle\n");
2822
2823 return len;
2824 }
2825
2826 static int video_write(char *buf)
2827 {
2828 char *cmd;
2829 int enable, disable, status;
2830 int res;
2831
2832 if (video_supported == TPACPI_VIDEO_NONE)
2833 return -ENODEV;
2834
2835 enable = 0;
2836 disable = 0;
2837
2838 while ((cmd = next_cmd(&buf))) {
2839 if (strlencmp(cmd, "lcd_enable") == 0) {
2840 enable |= TP_ACPI_VIDEO_S_LCD;
2841 } else if (strlencmp(cmd, "lcd_disable") == 0) {
2842 disable |= TP_ACPI_VIDEO_S_LCD;
2843 } else if (strlencmp(cmd, "crt_enable") == 0) {
2844 enable |= TP_ACPI_VIDEO_S_CRT;
2845 } else if (strlencmp(cmd, "crt_disable") == 0) {
2846 disable |= TP_ACPI_VIDEO_S_CRT;
2847 } else if (video_supported == TPACPI_VIDEO_NEW &&
2848 strlencmp(cmd, "dvi_enable") == 0) {
2849 enable |= TP_ACPI_VIDEO_S_DVI;
2850 } else if (video_supported == TPACPI_VIDEO_NEW &&
2851 strlencmp(cmd, "dvi_disable") == 0) {
2852 disable |= TP_ACPI_VIDEO_S_DVI;
2853 } else if (strlencmp(cmd, "auto_enable") == 0) {
2854 res = video_autosw_set(1);
2855 if (res)
2856 return res;
2857 } else if (strlencmp(cmd, "auto_disable") == 0) {
2858 res = video_autosw_set(0);
2859 if (res)
2860 return res;
2861 } else if (strlencmp(cmd, "video_switch") == 0) {
2862 res = video_outputsw_cycle();
2863 if (res)
2864 return res;
2865 } else if (strlencmp(cmd, "expand_toggle") == 0) {
2866 res = video_expand_toggle();
2867 if (res)
2868 return res;
2869 } else
2870 return -EINVAL;
2871 }
2872
2873 if (enable || disable) {
2874 status = video_outputsw_get();
2875 if (status < 0)
2876 return status;
2877 res = video_outputsw_set((status & ~disable) | enable);
2878 if (res)
2879 return res;
2880 }
2881
2882 return 0;
2883 }
2884
2885 static struct ibm_struct video_driver_data = {
2886 .name = "video",
2887 .read = video_read,
2888 .write = video_write,
2889 .exit = video_exit,
2890 };
2891
2892 /*************************************************************************
2893 * Light (thinklight) subdriver
2894 */
2895
2896 IBM_HANDLE(lght, root, "\\LGHT"); /* A21e, A2xm/p, T20-22, X20-21 */
2897 IBM_HANDLE(ledb, ec, "LEDB"); /* G4x */
2898
2899 static int __init light_init(struct ibm_init_struct *iibm)
2900 {
2901 vdbg_printk(TPACPI_DBG_INIT, "initializing light subdriver\n");
2902
2903 IBM_ACPIHANDLE_INIT(ledb);
2904 IBM_ACPIHANDLE_INIT(lght);
2905 IBM_ACPIHANDLE_INIT(cmos);
2906
2907 /* light not supported on 570, 600e/x, 770e, 770x, G4x, R30, R31 */
2908 tp_features.light = (cmos_handle || lght_handle) && !ledb_handle;
2909
2910 if (tp_features.light)
2911 /* light status not supported on
2912 570, 600e/x, 770e, 770x, G4x, R30, R31, R32, X20 */
2913 tp_features.light_status =
2914 acpi_evalf(ec_handle, NULL, "KBLT", "qv");
2915
2916 vdbg_printk(TPACPI_DBG_INIT, "light is %s\n",
2917 str_supported(tp_features.light));
2918
2919 return (tp_features.light)? 0 : 1;
2920 }
2921
2922 static int light_read(char *p)
2923 {
2924 int len = 0;
2925 int status = 0;
2926
2927 if (!tp_features.light) {
2928 len += sprintf(p + len, "status:\t\tnot supported\n");
2929 } else if (!tp_features.light_status) {
2930 len += sprintf(p + len, "status:\t\tunknown\n");
2931 len += sprintf(p + len, "commands:\ton, off\n");
2932 } else {
2933 if (!acpi_evalf(ec_handle, &status, "KBLT", "d"))
2934 return -EIO;
2935 len += sprintf(p + len, "status:\t\t%s\n", onoff(status, 0));
2936 len += sprintf(p + len, "commands:\ton, off\n");
2937 }
2938
2939 return len;
2940 }
2941
2942 static int light_write(char *buf)
2943 {
2944 int cmos_cmd, lght_cmd;
2945 char *cmd;
2946 int success;
2947
2948 if (!tp_features.light)
2949 return -ENODEV;
2950
2951 while ((cmd = next_cmd(&buf))) {
2952 if (strlencmp(cmd, "on") == 0) {
2953 cmos_cmd = 0x0c;
2954 lght_cmd = 1;
2955 } else if (strlencmp(cmd, "off") == 0) {
2956 cmos_cmd = 0x0d;
2957 lght_cmd = 0;
2958 } else
2959 return -EINVAL;
2960
2961 success = cmos_handle ?
2962 acpi_evalf(cmos_handle, NULL, NULL, "vd", cmos_cmd) :
2963 acpi_evalf(lght_handle, NULL, NULL, "vd", lght_cmd);
2964 if (!success)
2965 return -EIO;
2966 }
2967
2968 return 0;
2969 }
2970
2971 static struct ibm_struct light_driver_data = {
2972 .name = "light",
2973 .read = light_read,
2974 .write = light_write,
2975 };
2976
2977 /*************************************************************************
2978 * Dock subdriver
2979 */
2980
2981 #ifdef CONFIG_THINKPAD_ACPI_DOCK
2982
2983 static void dock_notify(struct ibm_struct *ibm, u32 event);
2984 static int dock_read(char *p);
2985 static int dock_write(char *buf);
2986
2987 IBM_HANDLE(dock, root, "\\_SB.GDCK", /* X30, X31, X40 */
2988 "\\_SB.PCI0.DOCK", /* 600e/x,770e,770x,A2xm/p,T20-22,X20-21 */
2989 "\\_SB.PCI0.PCI1.DOCK", /* all others */
2990 "\\_SB.PCI.ISA.SLCE", /* 570 */
2991 ); /* A21e,G4x,R30,R31,R32,R40,R40e,R50e */
2992
2993 /* don't list other alternatives as we install a notify handler on the 570 */
2994 IBM_HANDLE(pci, root, "\\_SB.PCI"); /* 570 */
2995
2996 static const struct acpi_device_id ibm_pci_device_ids[] = {
2997 {PCI_ROOT_HID_STRING, 0},
2998 {"", 0},
2999 };
3000
3001 static struct tp_acpi_drv_struct ibm_dock_acpidriver[2] = {
3002 {
3003 .notify = dock_notify,
3004 .handle = &dock_handle,
3005 .type = ACPI_SYSTEM_NOTIFY,
3006 },
3007 {
3008 /* THIS ONE MUST NEVER BE USED FOR DRIVER AUTOLOADING.
3009 * We just use it to get notifications of dock hotplug
3010 * in very old thinkpads */
3011 .hid = ibm_pci_device_ids,
3012 .notify = dock_notify,
3013 .handle = &pci_handle,
3014 .type = ACPI_SYSTEM_NOTIFY,
3015 },
3016 };
3017
3018 static struct ibm_struct dock_driver_data[2] = {
3019 {
3020 .name = "dock",
3021 .read = dock_read,
3022 .write = dock_write,
3023 .acpi = &ibm_dock_acpidriver[0],
3024 },
3025 {
3026 .name = "dock",
3027 .acpi = &ibm_dock_acpidriver[1],
3028 },
3029 };
3030
3031 #define dock_docked() (_sta(dock_handle) & 1)
3032
3033 static int __init dock_init(struct ibm_init_struct *iibm)
3034 {
3035 vdbg_printk(TPACPI_DBG_INIT, "initializing dock subdriver\n");
3036
3037 IBM_ACPIHANDLE_INIT(dock);
3038
3039 vdbg_printk(TPACPI_DBG_INIT, "dock is %s\n",
3040 str_supported(dock_handle != NULL));
3041
3042 return (dock_handle)? 0 : 1;
3043 }
3044
3045 static int __init dock_init2(struct ibm_init_struct *iibm)
3046 {
3047 int dock2_needed;
3048
3049 vdbg_printk(TPACPI_DBG_INIT, "initializing dock subdriver part 2\n");
3050
3051 if (dock_driver_data[0].flags.acpi_driver_registered &&
3052 dock_driver_data[0].flags.acpi_notify_installed) {
3053 IBM_ACPIHANDLE_INIT(pci);
3054 dock2_needed = (pci_handle != NULL);
3055 vdbg_printk(TPACPI_DBG_INIT,
3056 "dock PCI handler for the TP 570 is %s\n",
3057 str_supported(dock2_needed));
3058 } else {
3059 vdbg_printk(TPACPI_DBG_INIT,
3060 "dock subdriver part 2 not required\n");
3061 dock2_needed = 0;
3062 }
3063
3064 return (dock2_needed)? 0 : 1;
3065 }
3066
3067 static void dock_notify(struct ibm_struct *ibm, u32 event)
3068 {
3069 int docked = dock_docked();
3070 int pci = ibm->acpi->hid && ibm->acpi->device &&
3071 acpi_match_device_ids(ibm->acpi->device, ibm_pci_device_ids);
3072 int data;
3073
3074 if (event == 1 && !pci) /* 570 */
3075 data = 1; /* button */
3076 else if (event == 1 && pci) /* 570 */
3077 data = 3; /* dock */
3078 else if (event == 3 && docked)
3079 data = 1; /* button */
3080 else if (event == 3 && !docked)
3081 data = 2; /* undock */
3082 else if (event == 0 && docked)
3083 data = 3; /* dock */
3084 else {
3085 printk(IBM_ERR "unknown dock event %d, status %d\n",
3086 event, _sta(dock_handle));
3087 data = 0; /* unknown */
3088 }
3089 acpi_bus_generate_proc_event(ibm->acpi->device, event, data);
3090 acpi_bus_generate_netlink_event(ibm->acpi->device->pnp.device_class,
3091 ibm->acpi->device->dev.bus_id,
3092 event, data);
3093 }
3094
3095 static int dock_read(char *p)
3096 {
3097 int len = 0;
3098 int docked = dock_docked();
3099
3100 if (!dock_handle)
3101 len += sprintf(p + len, "status:\t\tnot supported\n");
3102 else if (!docked)
3103 len += sprintf(p + len, "status:\t\tundocked\n");
3104 else {
3105 len += sprintf(p + len, "status:\t\tdocked\n");
3106 len += sprintf(p + len, "commands:\tdock, undock\n");
3107 }
3108
3109 return len;
3110 }
3111
3112 static int dock_write(char *buf)
3113 {
3114 char *cmd;
3115
3116 if (!dock_docked())
3117 return -ENODEV;
3118
3119 while ((cmd = next_cmd(&buf))) {
3120 if (strlencmp(cmd, "undock") == 0) {
3121 if (!acpi_evalf(dock_handle, NULL, "_DCK", "vd", 0) ||
3122 !acpi_evalf(dock_handle, NULL, "_EJ0", "vd", 1))
3123 return -EIO;
3124 } else if (strlencmp(cmd, "dock") == 0) {
3125 if (!acpi_evalf(dock_handle, NULL, "_DCK", "vd", 1))
3126 return -EIO;
3127 } else
3128 return -EINVAL;
3129 }
3130
3131 return 0;
3132 }
3133
3134 #endif /* CONFIG_THINKPAD_ACPI_DOCK */
3135
3136 /*************************************************************************
3137 * Bay subdriver
3138 */
3139
3140 #ifdef CONFIG_THINKPAD_ACPI_BAY
3141
3142 IBM_HANDLE(bay, root, "\\_SB.PCI.IDE.SECN.MAST", /* 570 */
3143 "\\_SB.PCI0.IDE0.IDES.IDSM", /* 600e/x, 770e, 770x */
3144 "\\_SB.PCI0.SATA.SCND.MSTR", /* T60, X60, Z60 */
3145 "\\_SB.PCI0.IDE0.SCND.MSTR", /* all others */
3146 ); /* A21e, R30, R31 */
3147 IBM_HANDLE(bay_ej, bay, "_EJ3", /* 600e/x, A2xm/p, A3x */
3148 "_EJ0", /* all others */
3149 ); /* 570,A21e,G4x,R30,R31,R32,R40e,R50e */
3150 IBM_HANDLE(bay2, root, "\\_SB.PCI0.IDE0.PRIM.SLAV", /* A3x, R32 */
3151 "\\_SB.PCI0.IDE0.IDEP.IDPS", /* 600e/x, 770e, 770x */
3152 ); /* all others */
3153 IBM_HANDLE(bay2_ej, bay2, "_EJ3", /* 600e/x, 770e, A3x */
3154 "_EJ0", /* 770x */
3155 ); /* all others */
3156
3157 static int __init bay_init(struct ibm_init_struct *iibm)
3158 {
3159 vdbg_printk(TPACPI_DBG_INIT, "initializing bay subdriver\n");
3160
3161 IBM_ACPIHANDLE_INIT(bay);
3162 if (bay_handle)
3163 IBM_ACPIHANDLE_INIT(bay_ej);
3164 IBM_ACPIHANDLE_INIT(bay2);
3165 if (bay2_handle)
3166 IBM_ACPIHANDLE_INIT(bay2_ej);
3167
3168 tp_features.bay_status = bay_handle &&
3169 acpi_evalf(bay_handle, NULL, "_STA", "qv");
3170 tp_features.bay_status2 = bay2_handle &&
3171 acpi_evalf(bay2_handle, NULL, "_STA", "qv");
3172
3173 tp_features.bay_eject = bay_handle && bay_ej_handle &&
3174 (strlencmp(bay_ej_path, "_EJ0") == 0 || experimental);
3175 tp_features.bay_eject2 = bay2_handle && bay2_ej_handle &&
3176 (strlencmp(bay2_ej_path, "_EJ0") == 0 || experimental);
3177
3178 vdbg_printk(TPACPI_DBG_INIT,
3179 "bay 1: status %s, eject %s; bay 2: status %s, eject %s\n",
3180 str_supported(tp_features.bay_status),
3181 str_supported(tp_features.bay_eject),
3182 str_supported(tp_features.bay_status2),
3183 str_supported(tp_features.bay_eject2));
3184
3185 return (tp_features.bay_status || tp_features.bay_eject ||
3186 tp_features.bay_status2 || tp_features.bay_eject2)? 0 : 1;
3187 }
3188
3189 static void bay_notify(struct ibm_struct *ibm, u32 event)
3190 {
3191 acpi_bus_generate_proc_event(ibm->acpi->device, event, 0);
3192 acpi_bus_generate_netlink_event(ibm->acpi->device->pnp.device_class,
3193 ibm->acpi->device->dev.bus_id,
3194 event, 0);
3195 }
3196
3197 #define bay_occupied(b) (_sta(b##_handle) & 1)
3198
3199 static int bay_read(char *p)
3200 {
3201 int len = 0;
3202 int occupied = bay_occupied(bay);
3203 int occupied2 = bay_occupied(bay2);
3204 int eject, eject2;
3205
3206 len += sprintf(p + len, "status:\t\t%s\n",
3207 tp_features.bay_status ?
3208 (occupied ? "occupied" : "unoccupied") :
3209 "not supported");
3210 if (tp_features.bay_status2)
3211 len += sprintf(p + len, "status2:\t%s\n", occupied2 ?
3212 "occupied" : "unoccupied");
3213
3214 eject = tp_features.bay_eject && occupied;
3215 eject2 = tp_features.bay_eject2 && occupied2;
3216
3217 if (eject && eject2)
3218 len += sprintf(p + len, "commands:\teject, eject2\n");
3219 else if (eject)
3220 len += sprintf(p + len, "commands:\teject\n");
3221 else if (eject2)
3222 len += sprintf(p + len, "commands:\teject2\n");
3223
3224 return len;
3225 }
3226
3227 static int bay_write(char *buf)
3228 {
3229 char *cmd;
3230
3231 if (!tp_features.bay_eject && !tp_features.bay_eject2)
3232 return -ENODEV;
3233
3234 while ((cmd = next_cmd(&buf))) {
3235 if (tp_features.bay_eject && strlencmp(cmd, "eject") == 0) {
3236 if (!acpi_evalf(bay_ej_handle, NULL, NULL, "vd", 1))
3237 return -EIO;
3238 } else if (tp_features.bay_eject2 &&
3239 strlencmp(cmd, "eject2") == 0) {
3240 if (!acpi_evalf(bay2_ej_handle, NULL, NULL, "vd", 1))
3241 return -EIO;
3242 } else
3243 return -EINVAL;
3244 }
3245
3246 return 0;
3247 }
3248
3249 static struct tp_acpi_drv_struct ibm_bay_acpidriver = {
3250 .notify = bay_notify,
3251 .handle = &bay_handle,
3252 .type = ACPI_SYSTEM_NOTIFY,
3253 };
3254
3255 static struct ibm_struct bay_driver_data = {
3256 .name = "bay",
3257 .read = bay_read,
3258 .write = bay_write,
3259 .acpi = &ibm_bay_acpidriver,
3260 };
3261
3262 #endif /* CONFIG_THINKPAD_ACPI_BAY */
3263
3264 /*************************************************************************
3265 * CMOS subdriver
3266 */
3267
3268 /* sysfs cmos_command -------------------------------------------------- */
3269 static ssize_t cmos_command_store(struct device *dev,
3270 struct device_attribute *attr,
3271 const char *buf, size_t count)
3272 {
3273 unsigned long cmos_cmd;
3274 int res;
3275
3276 if (parse_strtoul(buf, 21, &cmos_cmd))
3277 return -EINVAL;
3278
3279 res = issue_thinkpad_cmos_command(cmos_cmd);
3280 return (res)? res : count;
3281 }
3282
3283 static struct device_attribute dev_attr_cmos_command =
3284 __ATTR(cmos_command, S_IWUSR, NULL, cmos_command_store);
3285
3286 /* --------------------------------------------------------------------- */
3287
3288 static int __init cmos_init(struct ibm_init_struct *iibm)
3289 {
3290 int res;
3291
3292 vdbg_printk(TPACPI_DBG_INIT,
3293 "initializing cmos commands subdriver\n");
3294
3295 IBM_ACPIHANDLE_INIT(cmos);
3296
3297 vdbg_printk(TPACPI_DBG_INIT, "cmos commands are %s\n",
3298 str_supported(cmos_handle != NULL));
3299
3300 res = device_create_file(&tpacpi_pdev->dev, &dev_attr_cmos_command);
3301 if (res)
3302 return res;
3303
3304 return (cmos_handle)? 0 : 1;
3305 }
3306
3307 static void cmos_exit(void)
3308 {
3309 device_remove_file(&tpacpi_pdev->dev, &dev_attr_cmos_command);
3310 }
3311
3312 static int cmos_read(char *p)
3313 {
3314 int len = 0;
3315
3316 /* cmos not supported on 570, 600e/x, 770e, 770x, A21e, A2xm/p,
3317 R30, R31, T20-22, X20-21 */
3318 if (!cmos_handle)
3319 len += sprintf(p + len, "status:\t\tnot supported\n");
3320 else {
3321 len += sprintf(p + len, "status:\t\tsupported\n");
3322 len += sprintf(p + len, "commands:\t<cmd> (<cmd> is 0-21)\n");
3323 }
3324
3325 return len;
3326 }
3327
3328 static int cmos_write(char *buf)
3329 {
3330 char *cmd;
3331 int cmos_cmd, res;
3332
3333 while ((cmd = next_cmd(&buf))) {
3334 if (sscanf(cmd, "%u", &cmos_cmd) == 1 &&
3335 cmos_cmd >= 0 && cmos_cmd <= 21) {
3336 /* cmos_cmd set */
3337 } else
3338 return -EINVAL;
3339
3340 res = issue_thinkpad_cmos_command(cmos_cmd);
3341 if (res)
3342 return res;
3343 }
3344
3345 return 0;
3346 }
3347
3348 static struct ibm_struct cmos_driver_data = {
3349 .name = "cmos",
3350 .read = cmos_read,
3351 .write = cmos_write,
3352 .exit = cmos_exit,
3353 };
3354
3355 /*************************************************************************
3356 * LED subdriver
3357 */
3358
3359 enum led_access_mode {
3360 TPACPI_LED_NONE = 0,
3361 TPACPI_LED_570, /* 570 */
3362 TPACPI_LED_OLD, /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20-21 */
3363 TPACPI_LED_NEW, /* all others */
3364 };
3365
3366 enum { /* For TPACPI_LED_OLD */
3367 TPACPI_LED_EC_HLCL = 0x0c, /* EC reg to get led to power on */
3368 TPACPI_LED_EC_HLBL = 0x0d, /* EC reg to blink a lit led */
3369 TPACPI_LED_EC_HLMS = 0x0e, /* EC reg to select led to command */
3370 };
3371
3372 static enum led_access_mode led_supported;
3373
3374 IBM_HANDLE(led, ec, "SLED", /* 570 */
3375 "SYSL", /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20-21 */
3376 "LED", /* all others */
3377 ); /* R30, R31 */
3378
3379 static int __init led_init(struct ibm_init_struct *iibm)
3380 {
3381 vdbg_printk(TPACPI_DBG_INIT, "initializing LED subdriver\n");
3382
3383 IBM_ACPIHANDLE_INIT(led);
3384
3385 if (!led_handle)
3386 /* led not supported on R30, R31 */
3387 led_supported = TPACPI_LED_NONE;
3388 else if (strlencmp(led_path, "SLED") == 0)
3389 /* 570 */
3390 led_supported = TPACPI_LED_570;
3391 else if (strlencmp(led_path, "SYSL") == 0)
3392 /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20-21 */
3393 led_supported = TPACPI_LED_OLD;
3394 else
3395 /* all others */
3396 led_supported = TPACPI_LED_NEW;
3397
3398 vdbg_printk(TPACPI_DBG_INIT, "LED commands are %s, mode %d\n",
3399 str_supported(led_supported), led_supported);
3400
3401 return (led_supported != TPACPI_LED_NONE)? 0 : 1;
3402 }
3403
3404 #define led_status(s) ((s) == 0 ? "off" : ((s) == 1 ? "on" : "blinking"))
3405
3406 static int led_read(char *p)
3407 {
3408 int len = 0;
3409
3410 if (!led_supported) {
3411 len += sprintf(p + len, "status:\t\tnot supported\n");
3412 return len;
3413 }
3414 len += sprintf(p + len, "status:\t\tsupported\n");
3415
3416 if (led_supported == TPACPI_LED_570) {
3417 /* 570 */
3418 int i, status;
3419 for (i = 0; i < 8; i++) {
3420 if (!acpi_evalf(ec_handle,
3421 &status, "GLED", "dd", 1 << i))
3422 return -EIO;
3423 len += sprintf(p + len, "%d:\t\t%s\n",
3424 i, led_status(status));
3425 }
3426 }
3427
3428 len += sprintf(p + len, "commands:\t"
3429 "<led> on, <led> off, <led> blink (<led> is 0-7)\n");
3430
3431 return len;
3432 }
3433
3434 /* off, on, blink */
3435 static const int led_sled_arg1[] = { 0, 1, 3 };
3436 static const int led_exp_hlbl[] = { 0, 0, 1 }; /* led# * */
3437 static const int led_exp_hlcl[] = { 0, 1, 1 }; /* led# * */
3438 static const int led_led_arg1[] = { 0, 0x80, 0xc0 };
3439
3440 static int led_write(char *buf)
3441 {
3442 char *cmd;
3443 int led, ind, ret;
3444
3445 if (!led_supported)
3446 return -ENODEV;
3447
3448 while ((cmd = next_cmd(&buf))) {
3449 if (sscanf(cmd, "%d", &led) != 1 || led < 0 || led > 7)
3450 return -EINVAL;
3451
3452 if (strstr(cmd, "off")) {
3453 ind = 0;
3454 } else if (strstr(cmd, "on")) {
3455 ind = 1;
3456 } else if (strstr(cmd, "blink")) {
3457 ind = 2;
3458 } else
3459 return -EINVAL;
3460
3461 if (led_supported == TPACPI_LED_570) {
3462 /* 570 */
3463 led = 1 << led;
3464 if (!acpi_evalf(led_handle, NULL, NULL, "vdd",
3465 led, led_sled_arg1[ind]))
3466 return -EIO;
3467 } else if (led_supported == TPACPI_LED_OLD) {
3468 /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20 */
3469 led = 1 << led;
3470 ret = ec_write(TPACPI_LED_EC_HLMS, led);
3471 if (ret >= 0)
3472 ret =
3473 ec_write(TPACPI_LED_EC_HLBL,
3474 led * led_exp_hlbl[ind]);
3475 if (ret >= 0)
3476 ret =
3477 ec_write(TPACPI_LED_EC_HLCL,
3478 led * led_exp_hlcl[ind]);
3479 if (ret < 0)
3480 return ret;
3481 } else {
3482 /* all others */
3483 if (!acpi_evalf(led_handle, NULL, NULL, "vdd",
3484 led, led_led_arg1[ind]))
3485 return -EIO;
3486 }
3487 }
3488
3489 return 0;
3490 }
3491
3492 static struct ibm_struct led_driver_data = {
3493 .name = "led",
3494 .read = led_read,
3495 .write = led_write,
3496 };
3497
3498 /*************************************************************************
3499 * Beep subdriver
3500 */
3501
3502 IBM_HANDLE(beep, ec, "BEEP"); /* all except R30, R31 */
3503
3504 static int __init beep_init(struct ibm_init_struct *iibm)
3505 {
3506 vdbg_printk(TPACPI_DBG_INIT, "initializing beep subdriver\n");
3507
3508 IBM_ACPIHANDLE_INIT(beep);
3509
3510 vdbg_printk(TPACPI_DBG_INIT, "beep is %s\n",
3511 str_supported(beep_handle != NULL));
3512
3513 return (beep_handle)? 0 : 1;
3514 }
3515
3516 static int beep_read(char *p)
3517 {
3518 int len = 0;
3519
3520 if (!beep_handle)
3521 len += sprintf(p + len, "status:\t\tnot supported\n");
3522 else {
3523 len += sprintf(p + len, "status:\t\tsupported\n");
3524 len += sprintf(p + len, "commands:\t<cmd> (<cmd> is 0-17)\n");
3525 }
3526
3527 return len;
3528 }
3529
3530 static int beep_write(char *buf)
3531 {
3532 char *cmd;
3533 int beep_cmd;
3534
3535 if (!beep_handle)
3536 return -ENODEV;
3537
3538 while ((cmd = next_cmd(&buf))) {
3539 if (sscanf(cmd, "%u", &beep_cmd) == 1 &&
3540 beep_cmd >= 0 && beep_cmd <= 17) {
3541 /* beep_cmd set */
3542 } else
3543 return -EINVAL;
3544 if (!acpi_evalf(beep_handle, NULL, NULL, "vdd", beep_cmd, 0))
3545 return -EIO;
3546 }
3547
3548 return 0;
3549 }
3550
3551 static struct ibm_struct beep_driver_data = {
3552 .name = "beep",
3553 .read = beep_read,
3554 .write = beep_write,
3555 };
3556
3557 /*************************************************************************
3558 * Thermal subdriver
3559 */
3560
3561 enum thermal_access_mode {
3562 TPACPI_THERMAL_NONE = 0, /* No thermal support */
3563 TPACPI_THERMAL_ACPI_TMP07, /* Use ACPI TMP0-7 */
3564 TPACPI_THERMAL_ACPI_UPDT, /* Use ACPI TMP0-7 with UPDT */
3565 TPACPI_THERMAL_TPEC_8, /* Use ACPI EC regs, 8 sensors */
3566 TPACPI_THERMAL_TPEC_16, /* Use ACPI EC regs, 16 sensors */
3567 };
3568
3569 enum { /* TPACPI_THERMAL_TPEC_* */
3570 TP_EC_THERMAL_TMP0 = 0x78, /* ACPI EC regs TMP 0..7 */
3571 TP_EC_THERMAL_TMP8 = 0xC0, /* ACPI EC regs TMP 8..15 */
3572 TP_EC_THERMAL_TMP_NA = -128, /* ACPI EC sensor not available */
3573 };
3574
3575 #define TPACPI_MAX_THERMAL_SENSORS 16 /* Max thermal sensors supported */
3576 struct ibm_thermal_sensors_struct {
3577 s32 temp[TPACPI_MAX_THERMAL_SENSORS];
3578 };
3579
3580 static enum thermal_access_mode thermal_read_mode;
3581
3582 /* idx is zero-based */
3583 static int thermal_get_sensor(int idx, s32 *value)
3584 {
3585 int t;
3586 s8 tmp;
3587 char tmpi[5];
3588
3589 t = TP_EC_THERMAL_TMP0;
3590
3591 switch (thermal_read_mode) {
3592 #if TPACPI_MAX_THERMAL_SENSORS >= 16
3593 case TPACPI_THERMAL_TPEC_16:
3594 if (idx >= 8 && idx <= 15) {
3595 t = TP_EC_THERMAL_TMP8;
3596 idx -= 8;
3597 }
3598 /* fallthrough */
3599 #endif
3600 case TPACPI_THERMAL_TPEC_8:
3601 if (idx <= 7) {
3602 if (!acpi_ec_read(t + idx, &tmp))
3603 return -EIO;
3604 *value = tmp * 1000;
3605 return 0;
3606 }
3607 break;
3608
3609 case TPACPI_THERMAL_ACPI_UPDT:
3610 if (idx <= 7) {
3611 snprintf(tmpi, sizeof(tmpi), "TMP%c", '0' + idx);
3612 if (!acpi_evalf(ec_handle, NULL, "UPDT", "v"))
3613 return -EIO;
3614 if (!acpi_evalf(ec_handle, &t, tmpi, "d"))
3615 return -EIO;
3616 *value = (t - 2732) * 100;
3617 return 0;
3618 }
3619 break;
3620
3621 case TPACPI_THERMAL_ACPI_TMP07:
3622 if (idx <= 7) {
3623 snprintf(tmpi, sizeof(tmpi), "TMP%c", '0' + idx);
3624 if (!acpi_evalf(ec_handle, &t, tmpi, "d"))
3625 return -EIO;
3626 if (t > 127 || t < -127)
3627 t = TP_EC_THERMAL_TMP_NA;
3628 *value = t * 1000;
3629 return 0;
3630 }
3631 break;
3632
3633 case TPACPI_THERMAL_NONE:
3634 default:
3635 return -ENOSYS;
3636 }
3637
3638 return -EINVAL;
3639 }
3640
3641 static int thermal_get_sensors(struct ibm_thermal_sensors_struct *s)
3642 {
3643 int res, i;
3644 int n;
3645
3646 n = 8;
3647 i = 0;
3648
3649 if (!s)
3650 return -EINVAL;
3651
3652 if (thermal_read_mode == TPACPI_THERMAL_TPEC_16)
3653 n = 16;
3654
3655 for(i = 0 ; i < n; i++) {
3656 res = thermal_get_sensor(i, &s->temp[i]);
3657 if (res)
3658 return res;
3659 }
3660
3661 return n;
3662 }
3663
3664 /* sysfs temp##_input -------------------------------------------------- */
3665
3666 static ssize_t thermal_temp_input_show(struct device *dev,
3667 struct device_attribute *attr,
3668 char *buf)
3669 {
3670 struct sensor_device_attribute *sensor_attr =
3671 to_sensor_dev_attr(attr);
3672 int idx = sensor_attr->index;
3673 s32 value;
3674 int res;
3675
3676 res = thermal_get_sensor(idx, &value);
3677 if (res)
3678 return res;
3679 if (value == TP_EC_THERMAL_TMP_NA * 1000)
3680 return -ENXIO;
3681
3682 return snprintf(buf, PAGE_SIZE, "%d\n", value);
3683 }
3684
3685 #define THERMAL_SENSOR_ATTR_TEMP(_idxA, _idxB) \
3686 SENSOR_ATTR(temp##_idxA##_input, S_IRUGO, thermal_temp_input_show, NULL, _idxB)
3687
3688 static struct sensor_device_attribute sensor_dev_attr_thermal_temp_input[] = {
3689 THERMAL_SENSOR_ATTR_TEMP(1, 0),
3690 THERMAL_SENSOR_ATTR_TEMP(2, 1),
3691 THERMAL_SENSOR_ATTR_TEMP(3, 2),
3692 THERMAL_SENSOR_ATTR_TEMP(4, 3),
3693 THERMAL_SENSOR_ATTR_TEMP(5, 4),
3694 THERMAL_SENSOR_ATTR_TEMP(6, 5),
3695 THERMAL_SENSOR_ATTR_TEMP(7, 6),
3696 THERMAL_SENSOR_ATTR_TEMP(8, 7),
3697 THERMAL_SENSOR_ATTR_TEMP(9, 8),
3698 THERMAL_SENSOR_ATTR_TEMP(10, 9),
3699 THERMAL_SENSOR_ATTR_TEMP(11, 10),
3700 THERMAL_SENSOR_ATTR_TEMP(12, 11),
3701 THERMAL_SENSOR_ATTR_TEMP(13, 12),
3702 THERMAL_SENSOR_ATTR_TEMP(14, 13),
3703 THERMAL_SENSOR_ATTR_TEMP(15, 14),
3704 THERMAL_SENSOR_ATTR_TEMP(16, 15),
3705 };
3706
3707 #define THERMAL_ATTRS(X) \
3708 &sensor_dev_attr_thermal_temp_input[X].dev_attr.attr
3709
3710 static struct attribute *thermal_temp_input_attr[] = {
3711 THERMAL_ATTRS(8),
3712 THERMAL_ATTRS(9),
3713 THERMAL_ATTRS(10),
3714 THERMAL_ATTRS(11),
3715 THERMAL_ATTRS(12),
3716 THERMAL_ATTRS(13),
3717 THERMAL_ATTRS(14),
3718 THERMAL_ATTRS(15),
3719 THERMAL_ATTRS(0),
3720 THERMAL_ATTRS(1),
3721 THERMAL_ATTRS(2),
3722 THERMAL_ATTRS(3),
3723 THERMAL_ATTRS(4),
3724 THERMAL_ATTRS(5),
3725 THERMAL_ATTRS(6),
3726 THERMAL_ATTRS(7),
3727 NULL
3728 };
3729
3730 static const struct attribute_group thermal_temp_input16_group = {
3731 .attrs = thermal_temp_input_attr
3732 };
3733
3734 static const struct attribute_group thermal_temp_input8_group = {
3735 .attrs = &thermal_temp_input_attr[8]
3736 };
3737
3738 #undef THERMAL_SENSOR_ATTR_TEMP
3739 #undef THERMAL_ATTRS
3740
3741 /* --------------------------------------------------------------------- */
3742
3743 static int __init thermal_init(struct ibm_init_struct *iibm)
3744 {
3745 u8 t, ta1, ta2;
3746 int i;
3747 int acpi_tmp7;
3748 int res;
3749
3750 vdbg_printk(TPACPI_DBG_INIT, "initializing thermal subdriver\n");
3751
3752 acpi_tmp7 = acpi_evalf(ec_handle, NULL, "TMP7", "qv");
3753
3754 if (thinkpad_id.ec_model) {
3755 /*
3756 * Direct EC access mode: sensors at registers
3757 * 0x78-0x7F, 0xC0-0xC7. Registers return 0x00 for
3758 * non-implemented, thermal sensors return 0x80 when
3759 * not available
3760 */
3761
3762 ta1 = ta2 = 0;
3763 for (i = 0; i < 8; i++) {
3764 if (acpi_ec_read(TP_EC_THERMAL_TMP0 + i, &t)) {
3765 ta1 |= t;
3766 } else {
3767 ta1 = 0;
3768 break;
3769 }
3770 if (acpi_ec_read(TP_EC_THERMAL_TMP8 + i, &t)) {
3771 ta2 |= t;
3772 } else {
3773 ta1 = 0;
3774 break;
3775 }
3776 }
3777 if (ta1 == 0) {
3778 /* This is sheer paranoia, but we handle it anyway */
3779 if (acpi_tmp7) {
3780 printk(IBM_ERR
3781 "ThinkPad ACPI EC access misbehaving, "
3782 "falling back to ACPI TMPx access mode\n");
3783 thermal_read_mode = TPACPI_THERMAL_ACPI_TMP07;
3784 } else {
3785 printk(IBM_ERR
3786 "ThinkPad ACPI EC access misbehaving, "
3787 "disabling thermal sensors access\n");
3788 thermal_read_mode = TPACPI_THERMAL_NONE;
3789 }
3790 } else {
3791 thermal_read_mode =
3792 (ta2 != 0) ?
3793 TPACPI_THERMAL_TPEC_16 : TPACPI_THERMAL_TPEC_8;
3794 }
3795 } else if (acpi_tmp7) {
3796 if (acpi_evalf(ec_handle, NULL, "UPDT", "qv")) {
3797 /* 600e/x, 770e, 770x */
3798 thermal_read_mode = TPACPI_THERMAL_ACPI_UPDT;
3799 } else {
3800 /* Standard ACPI TMPx access, max 8 sensors */
3801 thermal_read_mode = TPACPI_THERMAL_ACPI_TMP07;
3802 }
3803 } else {
3804 /* temperatures not supported on 570, G4x, R30, R31, R32 */
3805 thermal_read_mode = TPACPI_THERMAL_NONE;
3806 }
3807
3808 vdbg_printk(TPACPI_DBG_INIT, "thermal is %s, mode %d\n",
3809 str_supported(thermal_read_mode != TPACPI_THERMAL_NONE),
3810 thermal_read_mode);
3811
3812 switch(thermal_read_mode) {
3813 case TPACPI_THERMAL_TPEC_16:
3814 res = sysfs_create_group(&tpacpi_sensors_pdev->dev.kobj,
3815 &thermal_temp_input16_group);
3816 if (res)
3817 return res;
3818 break;
3819 case TPACPI_THERMAL_TPEC_8:
3820 case TPACPI_THERMAL_ACPI_TMP07:
3821 case TPACPI_THERMAL_ACPI_UPDT:
3822 res = sysfs_create_group(&tpacpi_sensors_pdev->dev.kobj,
3823 &thermal_temp_input8_group);
3824 if (res)
3825 return res;
3826 break;
3827 case TPACPI_THERMAL_NONE:
3828 default:
3829 return 1;
3830 }
3831
3832 return 0;
3833 }
3834
3835 static void thermal_exit(void)
3836 {
3837 switch(thermal_read_mode) {
3838 case TPACPI_THERMAL_TPEC_16:
3839 sysfs_remove_group(&tpacpi_sensors_pdev->dev.kobj,
3840 &thermal_temp_input16_group);
3841 break;
3842 case TPACPI_THERMAL_TPEC_8:
3843 case TPACPI_THERMAL_ACPI_TMP07:
3844 case TPACPI_THERMAL_ACPI_UPDT:
3845 sysfs_remove_group(&tpacpi_sensors_pdev->dev.kobj,
3846 &thermal_temp_input16_group);
3847 break;
3848 case TPACPI_THERMAL_NONE:
3849 default:
3850 break;
3851 }
3852 }
3853
3854 static int thermal_read(char *p)
3855 {
3856 int len = 0;
3857 int n, i;
3858 struct ibm_thermal_sensors_struct t;
3859
3860 n = thermal_get_sensors(&t);
3861 if (unlikely(n < 0))
3862 return n;
3863
3864 len += sprintf(p + len, "temperatures:\t");
3865
3866 if (n > 0) {
3867 for (i = 0; i < (n - 1); i++)
3868 len += sprintf(p + len, "%d ", t.temp[i] / 1000);
3869 len += sprintf(p + len, "%d\n", t.temp[i] / 1000);
3870 } else
3871 len += sprintf(p + len, "not supported\n");
3872
3873 return len;
3874 }
3875
3876 static struct ibm_struct thermal_driver_data = {
3877 .name = "thermal",
3878 .read = thermal_read,
3879 .exit = thermal_exit,
3880 };
3881
3882 /*************************************************************************
3883 * EC Dump subdriver
3884 */
3885
3886 static u8 ecdump_regs[256];
3887
3888 static int ecdump_read(char *p)
3889 {
3890 int len = 0;
3891 int i, j;
3892 u8 v;
3893
3894 len += sprintf(p + len, "EC "
3895 " +00 +01 +02 +03 +04 +05 +06 +07"
3896 " +08 +09 +0a +0b +0c +0d +0e +0f\n");
3897 for (i = 0; i < 256; i += 16) {
3898 len += sprintf(p + len, "EC 0x%02x:", i);
3899 for (j = 0; j < 16; j++) {
3900 if (!acpi_ec_read(i + j, &v))
3901 break;
3902 if (v != ecdump_regs[i + j])
3903 len += sprintf(p + len, " *%02x", v);
3904 else
3905 len += sprintf(p + len, " %02x", v);
3906 ecdump_regs[i + j] = v;
3907 }
3908 len += sprintf(p + len, "\n");
3909 if (j != 16)
3910 break;
3911 }
3912
3913 /* These are way too dangerous to advertise openly... */
3914 #if 0
3915 len += sprintf(p + len, "commands:\t0x<offset> 0x<value>"
3916 " (<offset> is 00-ff, <value> is 00-ff)\n");
3917 len += sprintf(p + len, "commands:\t0x<offset> <value> "
3918 " (<offset> is 00-ff, <value> is 0-255)\n");
3919 #endif
3920 return len;
3921 }
3922
3923 static int ecdump_write(char *buf)
3924 {
3925 char *cmd;
3926 int i, v;
3927
3928 while ((cmd = next_cmd(&buf))) {
3929 if (sscanf(cmd, "0x%x 0x%x", &i, &v) == 2) {
3930 /* i and v set */
3931 } else if (sscanf(cmd, "0x%x %u", &i, &v) == 2) {
3932 /* i and v set */
3933 } else
3934 return -EINVAL;
3935 if (i >= 0 && i < 256 && v >= 0 && v < 256) {
3936 if (!acpi_ec_write(i, v))
3937 return -EIO;
3938 } else
3939 return -EINVAL;
3940 }
3941
3942 return 0;
3943 }
3944
3945 static struct ibm_struct ecdump_driver_data = {
3946 .name = "ecdump",
3947 .read = ecdump_read,
3948 .write = ecdump_write,
3949 .flags.experimental = 1,
3950 };
3951
3952 /*************************************************************************
3953 * Backlight/brightness subdriver
3954 */
3955
3956 #define TPACPI_BACKLIGHT_DEV_NAME "thinkpad_screen"
3957
3958 static struct backlight_device *ibm_backlight_device;
3959 static int brightness_offset = 0x31;
3960 static int brightness_mode;
3961 static unsigned int brightness_enable = 2; /* 2 = auto, 0 = no, 1 = yes */
3962
3963 static struct mutex brightness_mutex;
3964
3965 /*
3966 * ThinkPads can read brightness from two places: EC 0x31, or
3967 * CMOS NVRAM byte 0x5E, bits 0-3.
3968 */
3969 static int brightness_get(struct backlight_device *bd)
3970 {
3971 u8 lec = 0, lcmos = 0, level = 0;
3972
3973 if (brightness_mode & 1) {
3974 if (!acpi_ec_read(brightness_offset, &lec))
3975 return -EIO;
3976 lec &= (tp_features.bright_16levels)? 0x0f : 0x07;
3977 level = lec;
3978 };
3979 if (brightness_mode & 2) {
3980 lcmos = (nvram_read_byte(TP_NVRAM_ADDR_BRIGHTNESS)
3981 & TP_NVRAM_MASK_LEVEL_BRIGHTNESS)
3982 >> TP_NVRAM_POS_LEVEL_BRIGHTNESS;
3983 lcmos &= (tp_features.bright_16levels)? 0x0f : 0x07;
3984 level = lcmos;
3985 }
3986
3987 if (brightness_mode == 3 && lec != lcmos) {
3988 printk(IBM_ERR
3989 "CMOS NVRAM (%u) and EC (%u) do not agree "
3990 "on display brightness level\n",
3991 (unsigned int) lcmos,
3992 (unsigned int) lec);
3993 return -EIO;
3994 }
3995
3996 return level;
3997 }
3998
3999 /* May return EINTR which can always be mapped to ERESTARTSYS */
4000 static int brightness_set(int value)
4001 {
4002 int cmos_cmd, inc, i, res;
4003 int current_value;
4004
4005 if (value > ((tp_features.bright_16levels)? 15 : 7))
4006 return -EINVAL;
4007
4008 res = mutex_lock_interruptible(&brightness_mutex);
4009 if (res < 0)
4010 return res;
4011
4012 current_value = brightness_get(NULL);
4013 if (current_value < 0) {
4014 res = current_value;
4015 goto errout;
4016 }
4017
4018 cmos_cmd = value > current_value ?
4019 TP_CMOS_BRIGHTNESS_UP :
4020 TP_CMOS_BRIGHTNESS_DOWN;
4021 inc = (value > current_value)? 1 : -1;
4022
4023 res = 0;
4024 for (i = current_value; i != value; i += inc) {
4025 if ((brightness_mode & 2) &&
4026 issue_thinkpad_cmos_command(cmos_cmd)) {
4027 res = -EIO;
4028 goto errout;
4029 }
4030 if ((brightness_mode & 1) &&
4031 !acpi_ec_write(brightness_offset, i + inc)) {
4032 res = -EIO;
4033 goto errout;;
4034 }
4035 }
4036
4037 errout:
4038 mutex_unlock(&brightness_mutex);
4039 return res;
4040 }
4041
4042 /* sysfs backlight class ----------------------------------------------- */
4043
4044 static int brightness_update_status(struct backlight_device *bd)
4045 {
4046 /* it is the backlight class's job (caller) to handle
4047 * EINTR and other errors properly */
4048 return brightness_set(
4049 (bd->props.fb_blank == FB_BLANK_UNBLANK &&
4050 bd->props.power == FB_BLANK_UNBLANK) ?
4051 bd->props.brightness : 0);
4052 }
4053
4054 static struct backlight_ops ibm_backlight_data = {
4055 .get_brightness = brightness_get,
4056 .update_status = brightness_update_status,
4057 };
4058
4059 /* --------------------------------------------------------------------- */
4060
4061 static int __init tpacpi_query_bcll_levels(acpi_handle handle)
4062 {
4063 struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
4064 union acpi_object *obj;
4065 int rc;
4066
4067 if (ACPI_SUCCESS(acpi_evaluate_object(handle, NULL, NULL, &buffer))) {
4068 obj = (union acpi_object *)buffer.pointer;
4069 if (!obj || (obj->type != ACPI_TYPE_PACKAGE)) {
4070 printk(IBM_ERR "Unknown BCLL data, "
4071 "please report this to %s\n", IBM_MAIL);
4072 rc = 0;
4073 } else {
4074 rc = obj->package.count;
4075 }
4076 } else {
4077 return 0;
4078 }
4079
4080 kfree(buffer.pointer);
4081 return rc;
4082 }
4083
4084 static acpi_status __init brightness_find_bcll(acpi_handle handle, u32 lvl,
4085 void *context, void **rv)
4086 {
4087 char name[ACPI_PATH_SEGMENT_LENGTH];
4088 struct acpi_buffer buffer = { sizeof(name), &name };
4089
4090 if (ACPI_SUCCESS(acpi_get_name(handle, ACPI_SINGLE_NAME, &buffer)) &&
4091 !strncmp("BCLL", name, sizeof(name) - 1)) {
4092 if (tpacpi_query_bcll_levels(handle) == 16) {
4093 *rv = handle;
4094 return AE_CTRL_TERMINATE;
4095 } else {
4096 return AE_OK;
4097 }
4098 } else {
4099 return AE_OK;
4100 }
4101 }
4102
4103 static int __init brightness_check_levels(void)
4104 {
4105 int status;
4106 void *found_node = NULL;
4107
4108 if (!vid_handle) {
4109 IBM_ACPIHANDLE_INIT(vid);
4110 }
4111 if (!vid_handle)
4112 return 0;
4113
4114 /* Search for a BCLL package with 16 levels */
4115 status = acpi_walk_namespace(ACPI_TYPE_PACKAGE, vid_handle, 3,
4116 brightness_find_bcll, NULL, &found_node);
4117
4118 return (ACPI_SUCCESS(status) && found_node != NULL);
4119 }
4120
4121 static acpi_status __init brightness_find_bcl(acpi_handle handle, u32 lvl,
4122 void *context, void **rv)
4123 {
4124 char name[ACPI_PATH_SEGMENT_LENGTH];
4125 struct acpi_buffer buffer = { sizeof(name), &name };
4126
4127 if (ACPI_SUCCESS(acpi_get_name(handle, ACPI_SINGLE_NAME, &buffer)) &&
4128 !strncmp("_BCL", name, sizeof(name) - 1)) {
4129 *rv = handle;
4130 return AE_CTRL_TERMINATE;
4131 } else {
4132 return AE_OK;
4133 }
4134 }
4135
4136 static int __init brightness_check_std_acpi_support(void)
4137 {
4138 int status;
4139 void *found_node = NULL;
4140
4141 if (!vid_handle) {
4142 IBM_ACPIHANDLE_INIT(vid);
4143 }
4144 if (!vid_handle)
4145 return 0;
4146
4147 /* Search for a _BCL method, but don't execute it */
4148 status = acpi_walk_namespace(ACPI_TYPE_METHOD, vid_handle, 3,
4149 brightness_find_bcl, NULL, &found_node);
4150
4151 return (ACPI_SUCCESS(status) && found_node != NULL);
4152 }
4153
4154 static int __init brightness_init(struct ibm_init_struct *iibm)
4155 {
4156 int b;
4157
4158 vdbg_printk(TPACPI_DBG_INIT, "initializing brightness subdriver\n");
4159
4160 mutex_init(&brightness_mutex);
4161
4162 if (!brightness_enable) {
4163 dbg_printk(TPACPI_DBG_INIT,
4164 "brightness support disabled by module parameter\n");
4165 return 1;
4166 } else if (brightness_enable > 1) {
4167 if (brightness_check_std_acpi_support()) {
4168 printk(IBM_NOTICE
4169 "standard ACPI backlight interface available, not loading native one...\n");
4170 return 1;
4171 }
4172 }
4173
4174 if (!brightness_mode) {
4175 if (thinkpad_id.vendor == PCI_VENDOR_ID_LENOVO)
4176 brightness_mode = 2;
4177 else
4178 brightness_mode = 3;
4179
4180 dbg_printk(TPACPI_DBG_INIT, "selected brightness_mode=%d\n",
4181 brightness_mode);
4182 }
4183
4184 if (brightness_mode > 3)
4185 return -EINVAL;
4186
4187 tp_features.bright_16levels =
4188 thinkpad_id.vendor == PCI_VENDOR_ID_LENOVO &&
4189 brightness_check_levels();
4190
4191 b = brightness_get(NULL);
4192 if (b < 0)
4193 return 1;
4194
4195 if (tp_features.bright_16levels)
4196 printk(IBM_INFO "detected a 16-level brightness capable ThinkPad\n");
4197
4198 ibm_backlight_device = backlight_device_register(
4199 TPACPI_BACKLIGHT_DEV_NAME, NULL, NULL,
4200 &ibm_backlight_data);
4201 if (IS_ERR(ibm_backlight_device)) {
4202 printk(IBM_ERR "Could not register backlight device\n");
4203 return PTR_ERR(ibm_backlight_device);
4204 }
4205 vdbg_printk(TPACPI_DBG_INIT, "brightness is supported\n");
4206
4207 ibm_backlight_device->props.max_brightness =
4208 (tp_features.bright_16levels)? 15 : 7;
4209 ibm_backlight_device->props.brightness = b;
4210 backlight_update_status(ibm_backlight_device);
4211
4212 return 0;
4213 }
4214
4215 static void brightness_exit(void)
4216 {
4217 if (ibm_backlight_device) {
4218 vdbg_printk(TPACPI_DBG_EXIT,
4219 "calling backlight_device_unregister()\n");
4220 backlight_device_unregister(ibm_backlight_device);
4221 ibm_backlight_device = NULL;
4222 }
4223 }
4224
4225 static int brightness_read(char *p)
4226 {
4227 int len = 0;
4228 int level;
4229
4230 if ((level = brightness_get(NULL)) < 0) {
4231 len += sprintf(p + len, "level:\t\tunreadable\n");
4232 } else {
4233 len += sprintf(p + len, "level:\t\t%d\n", level);
4234 len += sprintf(p + len, "commands:\tup, down\n");
4235 len += sprintf(p + len, "commands:\tlevel <level>"
4236 " (<level> is 0-%d)\n",
4237 (tp_features.bright_16levels) ? 15 : 7);
4238 }
4239
4240 return len;
4241 }
4242
4243 static int brightness_write(char *buf)
4244 {
4245 int level;
4246 int rc;
4247 char *cmd;
4248 int max_level = (tp_features.bright_16levels) ? 15 : 7;
4249
4250 level = brightness_get(NULL);
4251 if (level < 0)
4252 return level;
4253
4254 while ((cmd = next_cmd(&buf))) {
4255 if (strlencmp(cmd, "up") == 0) {
4256 if (level < max_level)
4257 level++;
4258 } else if (strlencmp(cmd, "down") == 0) {
4259 if (level > 0)
4260 level--;
4261 } else if (sscanf(cmd, "level %d", &level) == 1 &&
4262 level >= 0 && level <= max_level) {
4263 /* new level set */
4264 } else
4265 return -EINVAL;
4266 }
4267
4268 /*
4269 * Now we know what the final level should be, so we try to set it.
4270 * Doing it this way makes the syscall restartable in case of EINTR
4271 */
4272 rc = brightness_set(level);
4273 return (rc == -EINTR)? ERESTARTSYS : rc;
4274 }
4275
4276 static struct ibm_struct brightness_driver_data = {
4277 .name = "brightness",
4278 .read = brightness_read,
4279 .write = brightness_write,
4280 .exit = brightness_exit,
4281 };
4282
4283 /*************************************************************************
4284 * Volume subdriver
4285 */
4286
4287 static int volume_offset = 0x30;
4288
4289 static int volume_read(char *p)
4290 {
4291 int len = 0;
4292 u8 level;
4293
4294 if (!acpi_ec_read(volume_offset, &level)) {
4295 len += sprintf(p + len, "level:\t\tunreadable\n");
4296 } else {
4297 len += sprintf(p + len, "level:\t\t%d\n", level & 0xf);
4298 len += sprintf(p + len, "mute:\t\t%s\n", onoff(level, 6));
4299 len += sprintf(p + len, "commands:\tup, down, mute\n");
4300 len += sprintf(p + len, "commands:\tlevel <level>"
4301 " (<level> is 0-15)\n");
4302 }
4303
4304 return len;
4305 }
4306
4307 static int volume_write(char *buf)
4308 {
4309 int cmos_cmd, inc, i;
4310 u8 level, mute;
4311 int new_level, new_mute;
4312 char *cmd;
4313
4314 while ((cmd = next_cmd(&buf))) {
4315 if (!acpi_ec_read(volume_offset, &level))
4316 return -EIO;
4317 new_mute = mute = level & 0x40;
4318 new_level = level = level & 0xf;
4319
4320 if (strlencmp(cmd, "up") == 0) {
4321 if (mute)
4322 new_mute = 0;
4323 else
4324 new_level = level == 15 ? 15 : level + 1;
4325 } else if (strlencmp(cmd, "down") == 0) {
4326 if (mute)
4327 new_mute = 0;
4328 else
4329 new_level = level == 0 ? 0 : level - 1;
4330 } else if (sscanf(cmd, "level %d", &new_level) == 1 &&
4331 new_level >= 0 && new_level <= 15) {
4332 /* new_level set */
4333 } else if (strlencmp(cmd, "mute") == 0) {
4334 new_mute = 0x40;
4335 } else
4336 return -EINVAL;
4337
4338 if (new_level != level) { /* mute doesn't change */
4339 cmos_cmd = new_level > level ? TP_CMOS_VOLUME_UP : TP_CMOS_VOLUME_DOWN;
4340 inc = new_level > level ? 1 : -1;
4341
4342 if (mute && (issue_thinkpad_cmos_command(cmos_cmd) ||
4343 !acpi_ec_write(volume_offset, level)))
4344 return -EIO;
4345
4346 for (i = level; i != new_level; i += inc)
4347 if (issue_thinkpad_cmos_command(cmos_cmd) ||
4348 !acpi_ec_write(volume_offset, i + inc))
4349 return -EIO;
4350
4351 if (mute && (issue_thinkpad_cmos_command(TP_CMOS_VOLUME_MUTE) ||
4352 !acpi_ec_write(volume_offset,
4353 new_level + mute)))
4354 return -EIO;
4355 }
4356
4357 if (new_mute != mute) { /* level doesn't change */
4358 cmos_cmd = new_mute ? TP_CMOS_VOLUME_MUTE : TP_CMOS_VOLUME_UP;
4359
4360 if (issue_thinkpad_cmos_command(cmos_cmd) ||
4361 !acpi_ec_write(volume_offset, level + new_mute))
4362 return -EIO;
4363 }
4364 }
4365
4366 return 0;
4367 }
4368
4369 static struct ibm_struct volume_driver_data = {
4370 .name = "volume",
4371 .read = volume_read,
4372 .write = volume_write,
4373 };
4374
4375 /*************************************************************************
4376 * Fan subdriver
4377 */
4378
4379 /*
4380 * FAN ACCESS MODES
4381 *
4382 * TPACPI_FAN_RD_ACPI_GFAN:
4383 * ACPI GFAN method: returns fan level
4384 *
4385 * see TPACPI_FAN_WR_ACPI_SFAN
4386 * EC 0x2f (HFSP) not available if GFAN exists
4387 *
4388 * TPACPI_FAN_WR_ACPI_SFAN:
4389 * ACPI SFAN method: sets fan level, 0 (stop) to 7 (max)
4390 *
4391 * EC 0x2f (HFSP) might be available *for reading*, but do not use
4392 * it for writing.
4393 *
4394 * TPACPI_FAN_WR_TPEC:
4395 * ThinkPad EC register 0x2f (HFSP): fan control loop mode
4396 * Supported on almost all ThinkPads
4397 *
4398 * Fan speed changes of any sort (including those caused by the
4399 * disengaged mode) are usually done slowly by the firmware as the
4400 * maximum ammount of fan duty cycle change per second seems to be
4401 * limited.
4402 *
4403 * Reading is not available if GFAN exists.
4404 * Writing is not available if SFAN exists.
4405 *
4406 * Bits
4407 * 7 automatic mode engaged;
4408 * (default operation mode of the ThinkPad)
4409 * fan level is ignored in this mode.
4410 * 6 full speed mode (takes precedence over bit 7);
4411 * not available on all thinkpads. May disable
4412 * the tachometer while the fan controller ramps up
4413 * the speed (which can take up to a few *minutes*).
4414 * Speeds up fan to 100% duty-cycle, which is far above
4415 * the standard RPM levels. It is not impossible that
4416 * it could cause hardware damage.
4417 * 5-3 unused in some models. Extra bits for fan level
4418 * in others, but still useless as all values above
4419 * 7 map to the same speed as level 7 in these models.
4420 * 2-0 fan level (0..7 usually)
4421 * 0x00 = stop
4422 * 0x07 = max (set when temperatures critical)
4423 * Some ThinkPads may have other levels, see
4424 * TPACPI_FAN_WR_ACPI_FANS (X31/X40/X41)
4425 *
4426 * FIRMWARE BUG: on some models, EC 0x2f might not be initialized at
4427 * boot. Apparently the EC does not intialize it, so unless ACPI DSDT
4428 * does so, its initial value is meaningless (0x07).
4429 *
4430 * For firmware bugs, refer to:
4431 * http://thinkwiki.org/wiki/Embedded_Controller_Firmware#Firmware_Issues
4432 *
4433 * ----
4434 *
4435 * ThinkPad EC register 0x84 (LSB), 0x85 (MSB):
4436 * Main fan tachometer reading (in RPM)
4437 *
4438 * This register is present on all ThinkPads with a new-style EC, and
4439 * it is known not to be present on the A21m/e, and T22, as there is
4440 * something else in offset 0x84 according to the ACPI DSDT. Other
4441 * ThinkPads from this same time period (and earlier) probably lack the
4442 * tachometer as well.
4443 *
4444 * Unfortunately a lot of ThinkPads with new-style ECs but whose firwmare
4445 * was never fixed by IBM to report the EC firmware version string
4446 * probably support the tachometer (like the early X models), so
4447 * detecting it is quite hard. We need more data to know for sure.
4448 *
4449 * FIRMWARE BUG: always read 0x84 first, otherwise incorrect readings
4450 * might result.
4451 *
4452 * FIRMWARE BUG: may go stale while the EC is switching to full speed
4453 * mode.
4454 *
4455 * For firmware bugs, refer to:
4456 * http://thinkwiki.org/wiki/Embedded_Controller_Firmware#Firmware_Issues
4457 *
4458 * TPACPI_FAN_WR_ACPI_FANS:
4459 * ThinkPad X31, X40, X41. Not available in the X60.
4460 *
4461 * FANS ACPI handle: takes three arguments: low speed, medium speed,
4462 * high speed. ACPI DSDT seems to map these three speeds to levels
4463 * as follows: STOP LOW LOW MED MED HIGH HIGH HIGH HIGH
4464 * (this map is stored on FAN0..FAN8 as "0,1,1,2,2,3,3,3,3")
4465 *
4466 * The speeds are stored on handles
4467 * (FANA:FAN9), (FANC:FANB), (FANE:FAND).
4468 *
4469 * There are three default speed sets, acessible as handles:
4470 * FS1L,FS1M,FS1H; FS2L,FS2M,FS2H; FS3L,FS3M,FS3H
4471 *
4472 * ACPI DSDT switches which set is in use depending on various
4473 * factors.
4474 *
4475 * TPACPI_FAN_WR_TPEC is also available and should be used to
4476 * command the fan. The X31/X40/X41 seems to have 8 fan levels,
4477 * but the ACPI tables just mention level 7.
4478 */
4479
4480 enum { /* Fan control constants */
4481 fan_status_offset = 0x2f, /* EC register 0x2f */
4482 fan_rpm_offset = 0x84, /* EC register 0x84: LSB, 0x85 MSB (RPM)
4483 * 0x84 must be read before 0x85 */
4484
4485 TP_EC_FAN_FULLSPEED = 0x40, /* EC fan mode: full speed */
4486 TP_EC_FAN_AUTO = 0x80, /* EC fan mode: auto fan control */
4487
4488 TPACPI_FAN_LAST_LEVEL = 0x100, /* Use cached last-seen fan level */
4489 };
4490
4491 enum fan_status_access_mode {
4492 TPACPI_FAN_NONE = 0, /* No fan status or control */
4493 TPACPI_FAN_RD_ACPI_GFAN, /* Use ACPI GFAN */
4494 TPACPI_FAN_RD_TPEC, /* Use ACPI EC regs 0x2f, 0x84-0x85 */
4495 };
4496
4497 enum fan_control_access_mode {
4498 TPACPI_FAN_WR_NONE = 0, /* No fan control */
4499 TPACPI_FAN_WR_ACPI_SFAN, /* Use ACPI SFAN */
4500 TPACPI_FAN_WR_TPEC, /* Use ACPI EC reg 0x2f */
4501 TPACPI_FAN_WR_ACPI_FANS, /* Use ACPI FANS and EC reg 0x2f */
4502 };
4503
4504 enum fan_control_commands {
4505 TPACPI_FAN_CMD_SPEED = 0x0001, /* speed command */
4506 TPACPI_FAN_CMD_LEVEL = 0x0002, /* level command */
4507 TPACPI_FAN_CMD_ENABLE = 0x0004, /* enable/disable cmd,
4508 * and also watchdog cmd */
4509 };
4510
4511 static int fan_control_allowed;
4512
4513 static enum fan_status_access_mode fan_status_access_mode;
4514 static enum fan_control_access_mode fan_control_access_mode;
4515 static enum fan_control_commands fan_control_commands;
4516
4517 static u8 fan_control_initial_status;
4518 static u8 fan_control_desired_level;
4519 static int fan_watchdog_maxinterval;
4520
4521 static struct mutex fan_mutex;
4522
4523 static void fan_watchdog_fire(struct work_struct *ignored);
4524 static DECLARE_DELAYED_WORK(fan_watchdog_task, fan_watchdog_fire);
4525
4526 IBM_HANDLE(fans, ec, "FANS"); /* X31, X40, X41 */
4527 IBM_HANDLE(gfan, ec, "GFAN", /* 570 */
4528 "\\FSPD", /* 600e/x, 770e, 770x */
4529 ); /* all others */
4530 IBM_HANDLE(sfan, ec, "SFAN", /* 570 */
4531 "JFNS", /* 770x-JL */
4532 ); /* all others */
4533
4534 /*
4535 * Call with fan_mutex held
4536 */
4537 static void fan_update_desired_level(u8 status)
4538 {
4539 if ((status &
4540 (TP_EC_FAN_AUTO | TP_EC_FAN_FULLSPEED)) == 0) {
4541 if (status > 7)
4542 fan_control_desired_level = 7;
4543 else
4544 fan_control_desired_level = status;
4545 }
4546 }
4547
4548 static int fan_get_status(u8 *status)
4549 {
4550 u8 s;
4551
4552 /* TODO:
4553 * Add TPACPI_FAN_RD_ACPI_FANS ? */
4554
4555 switch (fan_status_access_mode) {
4556 case TPACPI_FAN_RD_ACPI_GFAN:
4557 /* 570, 600e/x, 770e, 770x */
4558
4559 if (unlikely(!acpi_evalf(gfan_handle, &s, NULL, "d")))
4560 return -EIO;
4561
4562 if (likely(status))
4563 *status = s & 0x07;
4564
4565 break;
4566
4567 case TPACPI_FAN_RD_TPEC:
4568 /* all except 570, 600e/x, 770e, 770x */
4569 if (unlikely(!acpi_ec_read(fan_status_offset, &s)))
4570 return -EIO;
4571
4572 if (likely(status))
4573 *status = s;
4574
4575 break;
4576
4577 default:
4578 return -ENXIO;
4579 }
4580
4581 return 0;
4582 }
4583
4584 static int fan_get_status_safe(u8 *status)
4585 {
4586 int rc;
4587 u8 s;
4588
4589 if (mutex_lock_interruptible(&fan_mutex))
4590 return -ERESTARTSYS;
4591 rc = fan_get_status(&s);
4592 if (!rc)
4593 fan_update_desired_level(s);
4594 mutex_unlock(&fan_mutex);
4595
4596 if (status)
4597 *status = s;
4598
4599 return rc;
4600 }
4601
4602 static int fan_get_speed(unsigned int *speed)
4603 {
4604 u8 hi, lo;
4605
4606 switch (fan_status_access_mode) {
4607 case TPACPI_FAN_RD_TPEC:
4608 /* all except 570, 600e/x, 770e, 770x */
4609 if (unlikely(!acpi_ec_read(fan_rpm_offset, &lo) ||
4610 !acpi_ec_read(fan_rpm_offset + 1, &hi)))
4611 return -EIO;
4612
4613 if (likely(speed))
4614 *speed = (hi << 8) | lo;
4615
4616 break;
4617
4618 default:
4619 return -ENXIO;
4620 }
4621
4622 return 0;
4623 }
4624
4625 static int fan_set_level(int level)
4626 {
4627 if (!fan_control_allowed)
4628 return -EPERM;
4629
4630 switch (fan_control_access_mode) {
4631 case TPACPI_FAN_WR_ACPI_SFAN:
4632 if (level >= 0 && level <= 7) {
4633 if (!acpi_evalf(sfan_handle, NULL, NULL, "vd", level))
4634 return -EIO;
4635 } else
4636 return -EINVAL;
4637 break;
4638
4639 case TPACPI_FAN_WR_ACPI_FANS:
4640 case TPACPI_FAN_WR_TPEC:
4641 if ((level != TP_EC_FAN_AUTO) &&
4642 (level != TP_EC_FAN_FULLSPEED) &&
4643 ((level < 0) || (level > 7)))
4644 return -EINVAL;
4645
4646 /* safety net should the EC not support AUTO
4647 * or FULLSPEED mode bits and just ignore them */
4648 if (level & TP_EC_FAN_FULLSPEED)
4649 level |= 7; /* safety min speed 7 */
4650 else if (level & TP_EC_FAN_FULLSPEED)
4651 level |= 4; /* safety min speed 4 */
4652
4653 if (!acpi_ec_write(fan_status_offset, level))
4654 return -EIO;
4655 else
4656 tp_features.fan_ctrl_status_undef = 0;
4657 break;
4658
4659 default:
4660 return -ENXIO;
4661 }
4662 return 0;
4663 }
4664
4665 static int fan_set_level_safe(int level)
4666 {
4667 int rc;
4668
4669 if (!fan_control_allowed)
4670 return -EPERM;
4671
4672 if (mutex_lock_interruptible(&fan_mutex))
4673 return -ERESTARTSYS;
4674
4675 if (level == TPACPI_FAN_LAST_LEVEL)
4676 level = fan_control_desired_level;
4677
4678 rc = fan_set_level(level);
4679 if (!rc)
4680 fan_update_desired_level(level);
4681
4682 mutex_unlock(&fan_mutex);
4683 return rc;
4684 }
4685
4686 static int fan_set_enable(void)
4687 {
4688 u8 s;
4689 int rc;
4690
4691 if (!fan_control_allowed)
4692 return -EPERM;
4693
4694 if (mutex_lock_interruptible(&fan_mutex))
4695 return -ERESTARTSYS;
4696
4697 switch (fan_control_access_mode) {
4698 case TPACPI_FAN_WR_ACPI_FANS:
4699 case TPACPI_FAN_WR_TPEC:
4700 rc = fan_get_status(&s);
4701 if (rc < 0)
4702 break;
4703
4704 /* Don't go out of emergency fan mode */
4705 if (s != 7) {
4706 s &= 0x07;
4707 s |= TP_EC_FAN_AUTO | 4; /* min fan speed 4 */
4708 }
4709
4710 if (!acpi_ec_write(fan_status_offset, s))
4711 rc = -EIO;
4712 else {
4713 tp_features.fan_ctrl_status_undef = 0;
4714 rc = 0;
4715 }
4716 break;
4717
4718 case TPACPI_FAN_WR_ACPI_SFAN:
4719 rc = fan_get_status(&s);
4720 if (rc < 0)
4721 break;
4722
4723 s &= 0x07;
4724
4725 /* Set fan to at least level 4 */
4726 s |= 4;
4727
4728 if (!acpi_evalf(sfan_handle, NULL, NULL, "vd", s))
4729 rc= -EIO;
4730 else
4731 rc = 0;
4732 break;
4733
4734 default:
4735 rc = -ENXIO;
4736 }
4737
4738 mutex_unlock(&fan_mutex);
4739 return rc;
4740 }
4741
4742 static int fan_set_disable(void)
4743 {
4744 int rc;
4745
4746 if (!fan_control_allowed)
4747 return -EPERM;
4748
4749 if (mutex_lock_interruptible(&fan_mutex))
4750 return -ERESTARTSYS;
4751
4752 rc = 0;
4753 switch (fan_control_access_mode) {
4754 case TPACPI_FAN_WR_ACPI_FANS:
4755 case TPACPI_FAN_WR_TPEC:
4756 if (!acpi_ec_write(fan_status_offset, 0x00))
4757 rc = -EIO;
4758 else {
4759 fan_control_desired_level = 0;
4760 tp_features.fan_ctrl_status_undef = 0;
4761 }
4762 break;
4763
4764 case TPACPI_FAN_WR_ACPI_SFAN:
4765 if (!acpi_evalf(sfan_handle, NULL, NULL, "vd", 0x00))
4766 rc = -EIO;
4767 else
4768 fan_control_desired_level = 0;
4769 break;
4770
4771 default:
4772 rc = -ENXIO;
4773 }
4774
4775
4776 mutex_unlock(&fan_mutex);
4777 return rc;
4778 }
4779
4780 static int fan_set_speed(int speed)
4781 {
4782 int rc;
4783
4784 if (!fan_control_allowed)
4785 return -EPERM;
4786
4787 if (mutex_lock_interruptible(&fan_mutex))
4788 return -ERESTARTSYS;
4789
4790 rc = 0;
4791 switch (fan_control_access_mode) {
4792 case TPACPI_FAN_WR_ACPI_FANS:
4793 if (speed >= 0 && speed <= 65535) {
4794 if (!acpi_evalf(fans_handle, NULL, NULL, "vddd",
4795 speed, speed, speed))
4796 rc = -EIO;
4797 } else
4798 rc = -EINVAL;
4799 break;
4800
4801 default:
4802 rc = -ENXIO;
4803 }
4804
4805 mutex_unlock(&fan_mutex);
4806 return rc;
4807 }
4808
4809 static void fan_watchdog_reset(void)
4810 {
4811 static int fan_watchdog_active;
4812
4813 if (fan_control_access_mode == TPACPI_FAN_WR_NONE)
4814 return;
4815
4816 if (fan_watchdog_active)
4817 cancel_delayed_work(&fan_watchdog_task);
4818
4819 if (fan_watchdog_maxinterval > 0 &&
4820 tpacpi_lifecycle != TPACPI_LIFE_EXITING) {
4821 fan_watchdog_active = 1;
4822 if (!schedule_delayed_work(&fan_watchdog_task,
4823 msecs_to_jiffies(fan_watchdog_maxinterval
4824 * 1000))) {
4825 printk(IBM_ERR "failed to schedule the fan watchdog, "
4826 "watchdog will not trigger\n");
4827 }
4828 } else
4829 fan_watchdog_active = 0;
4830 }
4831
4832 static void fan_watchdog_fire(struct work_struct *ignored)
4833 {
4834 int rc;
4835
4836 if (tpacpi_lifecycle != TPACPI_LIFE_RUNNING)
4837 return;
4838
4839 printk(IBM_NOTICE "fan watchdog: enabling fan\n");
4840 rc = fan_set_enable();
4841 if (rc < 0) {
4842 printk(IBM_ERR "fan watchdog: error %d while enabling fan, "
4843 "will try again later...\n", -rc);
4844 /* reschedule for later */
4845 fan_watchdog_reset();
4846 }
4847 }
4848
4849 /*
4850 * SYSFS fan layout: hwmon compatible (device)
4851 *
4852 * pwm*_enable:
4853 * 0: "disengaged" mode
4854 * 1: manual mode
4855 * 2: native EC "auto" mode (recommended, hardware default)
4856 *
4857 * pwm*: set speed in manual mode, ignored otherwise.
4858 * 0 is level 0; 255 is level 7. Intermediate points done with linear
4859 * interpolation.
4860 *
4861 * fan*_input: tachometer reading, RPM
4862 *
4863 *
4864 * SYSFS fan layout: extensions
4865 *
4866 * fan_watchdog (driver):
4867 * fan watchdog interval in seconds, 0 disables (default), max 120
4868 */
4869
4870 /* sysfs fan pwm1_enable ----------------------------------------------- */
4871 static ssize_t fan_pwm1_enable_show(struct device *dev,
4872 struct device_attribute *attr,
4873 char *buf)
4874 {
4875 int res, mode;
4876 u8 status;
4877
4878 res = fan_get_status_safe(&status);
4879 if (res)
4880 return res;
4881
4882 if (unlikely(tp_features.fan_ctrl_status_undef)) {
4883 if (status != fan_control_initial_status) {
4884 tp_features.fan_ctrl_status_undef = 0;
4885 } else {
4886 /* Return most likely status. In fact, it
4887 * might be the only possible status */
4888 status = TP_EC_FAN_AUTO;
4889 }
4890 }
4891
4892 if (status & TP_EC_FAN_FULLSPEED) {
4893 mode = 0;
4894 } else if (status & TP_EC_FAN_AUTO) {
4895 mode = 2;
4896 } else
4897 mode = 1;
4898
4899 return snprintf(buf, PAGE_SIZE, "%d\n", mode);
4900 }
4901
4902 static ssize_t fan_pwm1_enable_store(struct device *dev,
4903 struct device_attribute *attr,
4904 const char *buf, size_t count)
4905 {
4906 unsigned long t;
4907 int res, level;
4908
4909 if (parse_strtoul(buf, 2, &t))
4910 return -EINVAL;
4911
4912 switch (t) {
4913 case 0:
4914 level = TP_EC_FAN_FULLSPEED;
4915 break;
4916 case 1:
4917 level = TPACPI_FAN_LAST_LEVEL;
4918 break;
4919 case 2:
4920 level = TP_EC_FAN_AUTO;
4921 break;
4922 case 3:
4923 /* reserved for software-controlled auto mode */
4924 return -ENOSYS;
4925 default:
4926 return -EINVAL;
4927 }
4928
4929 res = fan_set_level_safe(level);
4930 if (res == -ENXIO)
4931 return -EINVAL;
4932 else if (res < 0)
4933 return res;
4934
4935 fan_watchdog_reset();
4936
4937 return count;
4938 }
4939
4940 static struct device_attribute dev_attr_fan_pwm1_enable =
4941 __ATTR(pwm1_enable, S_IWUSR | S_IRUGO,
4942 fan_pwm1_enable_show, fan_pwm1_enable_store);
4943
4944 /* sysfs fan pwm1 ------------------------------------------------------ */
4945 static ssize_t fan_pwm1_show(struct device *dev,
4946 struct device_attribute *attr,
4947 char *buf)
4948 {
4949 int res;
4950 u8 status;
4951
4952 res = fan_get_status_safe(&status);
4953 if (res)
4954 return res;
4955
4956 if (unlikely(tp_features.fan_ctrl_status_undef)) {
4957 if (status != fan_control_initial_status) {
4958 tp_features.fan_ctrl_status_undef = 0;
4959 } else {
4960 status = TP_EC_FAN_AUTO;
4961 }
4962 }
4963
4964 if ((status &
4965 (TP_EC_FAN_AUTO | TP_EC_FAN_FULLSPEED)) != 0)
4966 status = fan_control_desired_level;
4967
4968 if (status > 7)
4969 status = 7;
4970
4971 return snprintf(buf, PAGE_SIZE, "%u\n", (status * 255) / 7);
4972 }
4973
4974 static ssize_t fan_pwm1_store(struct device *dev,
4975 struct device_attribute *attr,
4976 const char *buf, size_t count)
4977 {
4978 unsigned long s;
4979 int rc;
4980 u8 status, newlevel;
4981
4982 if (parse_strtoul(buf, 255, &s))
4983 return -EINVAL;
4984
4985 /* scale down from 0-255 to 0-7 */
4986 newlevel = (s >> 5) & 0x07;
4987
4988 if (mutex_lock_interruptible(&fan_mutex))
4989 return -ERESTARTSYS;
4990
4991 rc = fan_get_status(&status);
4992 if (!rc && (status &
4993 (TP_EC_FAN_AUTO | TP_EC_FAN_FULLSPEED)) == 0) {
4994 rc = fan_set_level(newlevel);
4995 if (rc == -ENXIO)
4996 rc = -EINVAL;
4997 else if (!rc) {
4998 fan_update_desired_level(newlevel);
4999 fan_watchdog_reset();
5000 }
5001 }
5002
5003 mutex_unlock(&fan_mutex);
5004 return (rc)? rc : count;
5005 }
5006
5007 static struct device_attribute dev_attr_fan_pwm1 =
5008 __ATTR(pwm1, S_IWUSR | S_IRUGO,
5009 fan_pwm1_show, fan_pwm1_store);
5010
5011 /* sysfs fan fan1_input ------------------------------------------------ */
5012 static ssize_t fan_fan1_input_show(struct device *dev,
5013 struct device_attribute *attr,
5014 char *buf)
5015 {
5016 int res;
5017 unsigned int speed;
5018
5019 res = fan_get_speed(&speed);
5020 if (res < 0)
5021 return res;
5022
5023 return snprintf(buf, PAGE_SIZE, "%u\n", speed);
5024 }
5025
5026 static struct device_attribute dev_attr_fan_fan1_input =
5027 __ATTR(fan1_input, S_IRUGO,
5028 fan_fan1_input_show, NULL);
5029
5030 /* sysfs fan fan_watchdog (hwmon driver) ------------------------------- */
5031 static ssize_t fan_fan_watchdog_show(struct device_driver *drv,
5032 char *buf)
5033 {
5034 return snprintf(buf, PAGE_SIZE, "%u\n", fan_watchdog_maxinterval);
5035 }
5036
5037 static ssize_t fan_fan_watchdog_store(struct device_driver *drv,
5038 const char *buf, size_t count)
5039 {
5040 unsigned long t;
5041
5042 if (parse_strtoul(buf, 120, &t))
5043 return -EINVAL;
5044
5045 if (!fan_control_allowed)
5046 return -EPERM;
5047
5048 fan_watchdog_maxinterval = t;
5049 fan_watchdog_reset();
5050
5051 return count;
5052 }
5053
5054 static DRIVER_ATTR(fan_watchdog, S_IWUSR | S_IRUGO,
5055 fan_fan_watchdog_show, fan_fan_watchdog_store);
5056
5057 /* --------------------------------------------------------------------- */
5058 static struct attribute *fan_attributes[] = {
5059 &dev_attr_fan_pwm1_enable.attr, &dev_attr_fan_pwm1.attr,
5060 &dev_attr_fan_fan1_input.attr,
5061 NULL
5062 };
5063
5064 static const struct attribute_group fan_attr_group = {
5065 .attrs = fan_attributes,
5066 };
5067
5068 static int __init fan_init(struct ibm_init_struct *iibm)
5069 {
5070 int rc;
5071
5072 vdbg_printk(TPACPI_DBG_INIT, "initializing fan subdriver\n");
5073
5074 mutex_init(&fan_mutex);
5075 fan_status_access_mode = TPACPI_FAN_NONE;
5076 fan_control_access_mode = TPACPI_FAN_WR_NONE;
5077 fan_control_commands = 0;
5078 fan_watchdog_maxinterval = 0;
5079 tp_features.fan_ctrl_status_undef = 0;
5080 fan_control_desired_level = 7;
5081
5082 IBM_ACPIHANDLE_INIT(fans);
5083 IBM_ACPIHANDLE_INIT(gfan);
5084 IBM_ACPIHANDLE_INIT(sfan);
5085
5086 if (gfan_handle) {
5087 /* 570, 600e/x, 770e, 770x */
5088 fan_status_access_mode = TPACPI_FAN_RD_ACPI_GFAN;
5089 } else {
5090 /* all other ThinkPads: note that even old-style
5091 * ThinkPad ECs supports the fan control register */
5092 if (likely(acpi_ec_read(fan_status_offset,
5093 &fan_control_initial_status))) {
5094 fan_status_access_mode = TPACPI_FAN_RD_TPEC;
5095
5096 /* In some ThinkPads, neither the EC nor the ACPI
5097 * DSDT initialize the fan status, and it ends up
5098 * being set to 0x07 when it *could* be either
5099 * 0x07 or 0x80.
5100 *
5101 * Enable for TP-1Y (T43), TP-78 (R51e),
5102 * TP-76 (R52), TP-70 (T43, R52), which are known
5103 * to be buggy. */
5104 if (fan_control_initial_status == 0x07) {
5105 switch (thinkpad_id.ec_model) {
5106 case 0x5931: /* TP-1Y */
5107 case 0x3837: /* TP-78 */
5108 case 0x3637: /* TP-76 */
5109 case 0x3037: /* TP-70 */
5110 printk(IBM_NOTICE
5111 "fan_init: initial fan status is "
5112 "unknown, assuming it is in auto "
5113 "mode\n");
5114 tp_features.fan_ctrl_status_undef = 1;
5115 ;;
5116 }
5117 }
5118 } else {
5119 printk(IBM_ERR
5120 "ThinkPad ACPI EC access misbehaving, "
5121 "fan status and control unavailable\n");
5122 return 1;
5123 }
5124 }
5125
5126 if (sfan_handle) {
5127 /* 570, 770x-JL */
5128 fan_control_access_mode = TPACPI_FAN_WR_ACPI_SFAN;
5129 fan_control_commands |=
5130 TPACPI_FAN_CMD_LEVEL | TPACPI_FAN_CMD_ENABLE;
5131 } else {
5132 if (!gfan_handle) {
5133 /* gfan without sfan means no fan control */
5134 /* all other models implement TP EC 0x2f control */
5135
5136 if (fans_handle) {
5137 /* X31, X40, X41 */
5138 fan_control_access_mode =
5139 TPACPI_FAN_WR_ACPI_FANS;
5140 fan_control_commands |=
5141 TPACPI_FAN_CMD_SPEED |
5142 TPACPI_FAN_CMD_LEVEL |
5143 TPACPI_FAN_CMD_ENABLE;
5144 } else {
5145 fan_control_access_mode = TPACPI_FAN_WR_TPEC;
5146 fan_control_commands |=
5147 TPACPI_FAN_CMD_LEVEL |
5148 TPACPI_FAN_CMD_ENABLE;
5149 }
5150 }
5151 }
5152
5153 vdbg_printk(TPACPI_DBG_INIT, "fan is %s, modes %d, %d\n",
5154 str_supported(fan_status_access_mode != TPACPI_FAN_NONE ||
5155 fan_control_access_mode != TPACPI_FAN_WR_NONE),
5156 fan_status_access_mode, fan_control_access_mode);
5157
5158 /* fan control master switch */
5159 if (!fan_control_allowed) {
5160 fan_control_access_mode = TPACPI_FAN_WR_NONE;
5161 fan_control_commands = 0;
5162 dbg_printk(TPACPI_DBG_INIT,
5163 "fan control features disabled by parameter\n");
5164 }
5165
5166 /* update fan_control_desired_level */
5167 if (fan_status_access_mode != TPACPI_FAN_NONE)
5168 fan_get_status_safe(NULL);
5169
5170 if (fan_status_access_mode != TPACPI_FAN_NONE ||
5171 fan_control_access_mode != TPACPI_FAN_WR_NONE) {
5172 rc = sysfs_create_group(&tpacpi_sensors_pdev->dev.kobj,
5173 &fan_attr_group);
5174 if (!(rc < 0))
5175 rc = driver_create_file(&tpacpi_hwmon_pdriver.driver,
5176 &driver_attr_fan_watchdog);
5177 if (rc < 0)
5178 return rc;
5179 return 0;
5180 } else
5181 return 1;
5182 }
5183
5184 static void fan_exit(void)
5185 {
5186 vdbg_printk(TPACPI_DBG_EXIT, "cancelling any pending fan watchdog tasks\n");
5187
5188 /* FIXME: can we really do this unconditionally? */
5189 sysfs_remove_group(&tpacpi_sensors_pdev->dev.kobj, &fan_attr_group);
5190 driver_remove_file(&tpacpi_hwmon_pdriver.driver, &driver_attr_fan_watchdog);
5191
5192 cancel_delayed_work(&fan_watchdog_task);
5193 flush_scheduled_work();
5194 }
5195
5196 static int fan_read(char *p)
5197 {
5198 int len = 0;
5199 int rc;
5200 u8 status;
5201 unsigned int speed = 0;
5202
5203 switch (fan_status_access_mode) {
5204 case TPACPI_FAN_RD_ACPI_GFAN:
5205 /* 570, 600e/x, 770e, 770x */
5206 if ((rc = fan_get_status_safe(&status)) < 0)
5207 return rc;
5208
5209 len += sprintf(p + len, "status:\t\t%s\n"
5210 "level:\t\t%d\n",
5211 (status != 0) ? "enabled" : "disabled", status);
5212 break;
5213
5214 case TPACPI_FAN_RD_TPEC:
5215 /* all except 570, 600e/x, 770e, 770x */
5216 if ((rc = fan_get_status_safe(&status)) < 0)
5217 return rc;
5218
5219 if (unlikely(tp_features.fan_ctrl_status_undef)) {
5220 if (status != fan_control_initial_status)
5221 tp_features.fan_ctrl_status_undef = 0;
5222 else
5223 /* Return most likely status. In fact, it
5224 * might be the only possible status */
5225 status = TP_EC_FAN_AUTO;
5226 }
5227
5228 len += sprintf(p + len, "status:\t\t%s\n",
5229 (status != 0) ? "enabled" : "disabled");
5230
5231 if ((rc = fan_get_speed(&speed)) < 0)
5232 return rc;
5233
5234 len += sprintf(p + len, "speed:\t\t%d\n", speed);
5235
5236 if (status & TP_EC_FAN_FULLSPEED)
5237 /* Disengaged mode takes precedence */
5238 len += sprintf(p + len, "level:\t\tdisengaged\n");
5239 else if (status & TP_EC_FAN_AUTO)
5240 len += sprintf(p + len, "level:\t\tauto\n");
5241 else
5242 len += sprintf(p + len, "level:\t\t%d\n", status);
5243 break;
5244
5245 case TPACPI_FAN_NONE:
5246 default:
5247 len += sprintf(p + len, "status:\t\tnot supported\n");
5248 }
5249
5250 if (fan_control_commands & TPACPI_FAN_CMD_LEVEL) {
5251 len += sprintf(p + len, "commands:\tlevel <level>");
5252
5253 switch (fan_control_access_mode) {
5254 case TPACPI_FAN_WR_ACPI_SFAN:
5255 len += sprintf(p + len, " (<level> is 0-7)\n");
5256 break;
5257
5258 default:
5259 len += sprintf(p + len, " (<level> is 0-7, "
5260 "auto, disengaged, full-speed)\n");
5261 break;
5262 }
5263 }
5264
5265 if (fan_control_commands & TPACPI_FAN_CMD_ENABLE)
5266 len += sprintf(p + len, "commands:\tenable, disable\n"
5267 "commands:\twatchdog <timeout> (<timeout> is 0 (off), "
5268 "1-120 (seconds))\n");
5269
5270 if (fan_control_commands & TPACPI_FAN_CMD_SPEED)
5271 len += sprintf(p + len, "commands:\tspeed <speed>"
5272 " (<speed> is 0-65535)\n");
5273
5274 return len;
5275 }
5276
5277 static int fan_write_cmd_level(const char *cmd, int *rc)
5278 {
5279 int level;
5280
5281 if (strlencmp(cmd, "level auto") == 0)
5282 level = TP_EC_FAN_AUTO;
5283 else if ((strlencmp(cmd, "level disengaged") == 0) |
5284 (strlencmp(cmd, "level full-speed") == 0))
5285 level = TP_EC_FAN_FULLSPEED;
5286 else if (sscanf(cmd, "level %d", &level) != 1)
5287 return 0;
5288
5289 if ((*rc = fan_set_level_safe(level)) == -ENXIO)
5290 printk(IBM_ERR "level command accepted for unsupported "
5291 "access mode %d", fan_control_access_mode);
5292
5293 return 1;
5294 }
5295
5296 static int fan_write_cmd_enable(const char *cmd, int *rc)
5297 {
5298 if (strlencmp(cmd, "enable") != 0)
5299 return 0;
5300
5301 if ((*rc = fan_set_enable()) == -ENXIO)
5302 printk(IBM_ERR "enable command accepted for unsupported "
5303 "access mode %d", fan_control_access_mode);
5304
5305 return 1;
5306 }
5307
5308 static int fan_write_cmd_disable(const char *cmd, int *rc)
5309 {
5310 if (strlencmp(cmd, "disable") != 0)
5311 return 0;
5312
5313 if ((*rc = fan_set_disable()) == -ENXIO)
5314 printk(IBM_ERR "disable command accepted for unsupported "
5315 "access mode %d", fan_control_access_mode);
5316
5317 return 1;
5318 }
5319
5320 static int fan_write_cmd_speed(const char *cmd, int *rc)
5321 {
5322 int speed;
5323
5324 /* TODO:
5325 * Support speed <low> <medium> <high> ? */
5326
5327 if (sscanf(cmd, "speed %d", &speed) != 1)
5328 return 0;
5329
5330 if ((*rc = fan_set_speed(speed)) == -ENXIO)
5331 printk(IBM_ERR "speed command accepted for unsupported "
5332 "access mode %d", fan_control_access_mode);
5333
5334 return 1;
5335 }
5336
5337 static int fan_write_cmd_watchdog(const char *cmd, int *rc)
5338 {
5339 int interval;
5340
5341 if (sscanf(cmd, "watchdog %d", &interval) != 1)
5342 return 0;
5343
5344 if (interval < 0 || interval > 120)
5345 *rc = -EINVAL;
5346 else
5347 fan_watchdog_maxinterval = interval;
5348
5349 return 1;
5350 }
5351
5352 static int fan_write(char *buf)
5353 {
5354 char *cmd;
5355 int rc = 0;
5356
5357 while (!rc && (cmd = next_cmd(&buf))) {
5358 if (!((fan_control_commands & TPACPI_FAN_CMD_LEVEL) &&
5359 fan_write_cmd_level(cmd, &rc)) &&
5360 !((fan_control_commands & TPACPI_FAN_CMD_ENABLE) &&
5361 (fan_write_cmd_enable(cmd, &rc) ||
5362 fan_write_cmd_disable(cmd, &rc) ||
5363 fan_write_cmd_watchdog(cmd, &rc))) &&
5364 !((fan_control_commands & TPACPI_FAN_CMD_SPEED) &&
5365 fan_write_cmd_speed(cmd, &rc))
5366 )
5367 rc = -EINVAL;
5368 else if (!rc)
5369 fan_watchdog_reset();
5370 }
5371
5372 return rc;
5373 }
5374
5375 static struct ibm_struct fan_driver_data = {
5376 .name = "fan",
5377 .read = fan_read,
5378 .write = fan_write,
5379 .exit = fan_exit,
5380 };
5381
5382 /****************************************************************************
5383 ****************************************************************************
5384 *
5385 * Infrastructure
5386 *
5387 ****************************************************************************
5388 ****************************************************************************/
5389
5390 /* sysfs name ---------------------------------------------------------- */
5391 static ssize_t thinkpad_acpi_pdev_name_show(struct device *dev,
5392 struct device_attribute *attr,
5393 char *buf)
5394 {
5395 return snprintf(buf, PAGE_SIZE, "%s\n", IBM_NAME);
5396 }
5397
5398 static struct device_attribute dev_attr_thinkpad_acpi_pdev_name =
5399 __ATTR(name, S_IRUGO, thinkpad_acpi_pdev_name_show, NULL);
5400
5401 /* --------------------------------------------------------------------- */
5402
5403 /* /proc support */
5404 static struct proc_dir_entry *proc_dir;
5405
5406 /*
5407 * Module and infrastructure proble, init and exit handling
5408 */
5409
5410 static int force_load;
5411
5412 #ifdef CONFIG_THINKPAD_ACPI_DEBUG
5413 static const char * __init str_supported(int is_supported)
5414 {
5415 static char text_unsupported[] __initdata = "not supported";
5416
5417 return (is_supported)? &text_unsupported[4] : &text_unsupported[0];
5418 }
5419 #endif /* CONFIG_THINKPAD_ACPI_DEBUG */
5420
5421 static void ibm_exit(struct ibm_struct *ibm)
5422 {
5423 dbg_printk(TPACPI_DBG_EXIT, "removing %s\n", ibm->name);
5424
5425 list_del_init(&ibm->all_drivers);
5426
5427 if (ibm->flags.acpi_notify_installed) {
5428 dbg_printk(TPACPI_DBG_EXIT,
5429 "%s: acpi_remove_notify_handler\n", ibm->name);
5430 BUG_ON(!ibm->acpi);
5431 acpi_remove_notify_handler(*ibm->acpi->handle,
5432 ibm->acpi->type,
5433 dispatch_acpi_notify);
5434 ibm->flags.acpi_notify_installed = 0;
5435 ibm->flags.acpi_notify_installed = 0;
5436 }
5437
5438 if (ibm->flags.proc_created) {
5439 dbg_printk(TPACPI_DBG_EXIT,
5440 "%s: remove_proc_entry\n", ibm->name);
5441 remove_proc_entry(ibm->name, proc_dir);
5442 ibm->flags.proc_created = 0;
5443 }
5444
5445 if (ibm->flags.acpi_driver_registered) {
5446 dbg_printk(TPACPI_DBG_EXIT,
5447 "%s: acpi_bus_unregister_driver\n", ibm->name);
5448 BUG_ON(!ibm->acpi);
5449 acpi_bus_unregister_driver(ibm->acpi->driver);
5450 kfree(ibm->acpi->driver);
5451 ibm->acpi->driver = NULL;
5452 ibm->flags.acpi_driver_registered = 0;
5453 }
5454
5455 if (ibm->flags.init_called && ibm->exit) {
5456 ibm->exit();
5457 ibm->flags.init_called = 0;
5458 }
5459
5460 dbg_printk(TPACPI_DBG_INIT, "finished removing %s\n", ibm->name);
5461 }
5462
5463 static int __init ibm_init(struct ibm_init_struct *iibm)
5464 {
5465 int ret;
5466 struct ibm_struct *ibm = iibm->data;
5467 struct proc_dir_entry *entry;
5468
5469 BUG_ON(ibm == NULL);
5470
5471 INIT_LIST_HEAD(&ibm->all_drivers);
5472
5473 if (ibm->flags.experimental && !experimental)
5474 return 0;
5475
5476 dbg_printk(TPACPI_DBG_INIT,
5477 "probing for %s\n", ibm->name);
5478
5479 if (iibm->init) {
5480 ret = iibm->init(iibm);
5481 if (ret > 0)
5482 return 0; /* probe failed */
5483 if (ret)
5484 return ret;
5485
5486 ibm->flags.init_called = 1;
5487 }
5488
5489 if (ibm->acpi) {
5490 if (ibm->acpi->hid) {
5491 ret = register_tpacpi_subdriver(ibm);
5492 if (ret)
5493 goto err_out;
5494 }
5495
5496 if (ibm->acpi->notify) {
5497 ret = setup_acpi_notify(ibm);
5498 if (ret == -ENODEV) {
5499 printk(IBM_NOTICE "disabling subdriver %s\n",
5500 ibm->name);
5501 ret = 0;
5502 goto err_out;
5503 }
5504 if (ret < 0)
5505 goto err_out;
5506 }
5507 }
5508
5509 dbg_printk(TPACPI_DBG_INIT,
5510 "%s installed\n", ibm->name);
5511
5512 if (ibm->read) {
5513 entry = create_proc_entry(ibm->name,
5514 S_IFREG | S_IRUGO | S_IWUSR,
5515 proc_dir);
5516 if (!entry) {
5517 printk(IBM_ERR "unable to create proc entry %s\n",
5518 ibm->name);
5519 ret = -ENODEV;
5520 goto err_out;
5521 }
5522 entry->owner = THIS_MODULE;
5523 entry->data = ibm;
5524 entry->read_proc = &dispatch_procfs_read;
5525 if (ibm->write)
5526 entry->write_proc = &dispatch_procfs_write;
5527 ibm->flags.proc_created = 1;
5528 }
5529
5530 list_add_tail(&ibm->all_drivers, &tpacpi_all_drivers);
5531
5532 return 0;
5533
5534 err_out:
5535 dbg_printk(TPACPI_DBG_INIT,
5536 "%s: at error exit path with result %d\n",
5537 ibm->name, ret);
5538
5539 ibm_exit(ibm);
5540 return (ret < 0)? ret : 0;
5541 }
5542
5543 /* Probing */
5544
5545 static void __init get_thinkpad_model_data(struct thinkpad_id_data *tp)
5546 {
5547 const struct dmi_device *dev = NULL;
5548 char ec_fw_string[18];
5549
5550 if (!tp)
5551 return;
5552
5553 memset(tp, 0, sizeof(*tp));
5554
5555 if (dmi_name_in_vendors("IBM"))
5556 tp->vendor = PCI_VENDOR_ID_IBM;
5557 else if (dmi_name_in_vendors("LENOVO"))
5558 tp->vendor = PCI_VENDOR_ID_LENOVO;
5559 else
5560 return;
5561
5562 tp->bios_version_str = kstrdup(dmi_get_system_info(DMI_BIOS_VERSION),
5563 GFP_KERNEL);
5564 if (!tp->bios_version_str)
5565 return;
5566 tp->bios_model = tp->bios_version_str[0]
5567 | (tp->bios_version_str[1] << 8);
5568
5569 /*
5570 * ThinkPad T23 or newer, A31 or newer, R50e or newer,
5571 * X32 or newer, all Z series; Some models must have an
5572 * up-to-date BIOS or they will not be detected.
5573 *
5574 * See http://thinkwiki.org/wiki/List_of_DMI_IDs
5575 */
5576 while ((dev = dmi_find_device(DMI_DEV_TYPE_OEM_STRING, NULL, dev))) {
5577 if (sscanf(dev->name,
5578 "IBM ThinkPad Embedded Controller -[%17c",
5579 ec_fw_string) == 1) {
5580 ec_fw_string[sizeof(ec_fw_string) - 1] = 0;
5581 ec_fw_string[strcspn(ec_fw_string, " ]")] = 0;
5582
5583 tp->ec_version_str = kstrdup(ec_fw_string, GFP_KERNEL);
5584 tp->ec_model = ec_fw_string[0]
5585 | (ec_fw_string[1] << 8);
5586 break;
5587 }
5588 }
5589
5590 tp->model_str = kstrdup(dmi_get_system_info(DMI_PRODUCT_VERSION),
5591 GFP_KERNEL);
5592 if (strnicmp(tp->model_str, "ThinkPad", 8) != 0) {
5593 kfree(tp->model_str);
5594 tp->model_str = NULL;
5595 }
5596 }
5597
5598 static int __init probe_for_thinkpad(void)
5599 {
5600 int is_thinkpad;
5601
5602 if (acpi_disabled)
5603 return -ENODEV;
5604
5605 /*
5606 * Non-ancient models have better DMI tagging, but very old models
5607 * don't.
5608 */
5609 is_thinkpad = (thinkpad_id.model_str != NULL);
5610
5611 /* ec is required because many other handles are relative to it */
5612 IBM_ACPIHANDLE_INIT(ec);
5613 if (!ec_handle) {
5614 if (is_thinkpad)
5615 printk(IBM_ERR
5616 "Not yet supported ThinkPad detected!\n");
5617 return -ENODEV;
5618 }
5619
5620 /*
5621 * Risks a regression on very old machines, but reduces potential
5622 * false positives a damn great deal
5623 */
5624 if (!is_thinkpad)
5625 is_thinkpad = (thinkpad_id.vendor == PCI_VENDOR_ID_IBM);
5626
5627 if (!is_thinkpad && !force_load)
5628 return -ENODEV;
5629
5630 return 0;
5631 }
5632
5633
5634 /* Module init, exit, parameters */
5635
5636 static struct ibm_init_struct ibms_init[] __initdata = {
5637 {
5638 .init = thinkpad_acpi_driver_init,
5639 .data = &thinkpad_acpi_driver_data,
5640 },
5641 {
5642 .init = hotkey_init,
5643 .data = &hotkey_driver_data,
5644 },
5645 {
5646 .init = bluetooth_init,
5647 .data = &bluetooth_driver_data,
5648 },
5649 {
5650 .init = wan_init,
5651 .data = &wan_driver_data,
5652 },
5653 {
5654 .init = video_init,
5655 .data = &video_driver_data,
5656 },
5657 {
5658 .init = light_init,
5659 .data = &light_driver_data,
5660 },
5661 #ifdef CONFIG_THINKPAD_ACPI_DOCK
5662 {
5663 .init = dock_init,
5664 .data = &dock_driver_data[0],
5665 },
5666 {
5667 .init = dock_init2,
5668 .data = &dock_driver_data[1],
5669 },
5670 #endif
5671 #ifdef CONFIG_THINKPAD_ACPI_BAY
5672 {
5673 .init = bay_init,
5674 .data = &bay_driver_data,
5675 },
5676 #endif
5677 {
5678 .init = cmos_init,
5679 .data = &cmos_driver_data,
5680 },
5681 {
5682 .init = led_init,
5683 .data = &led_driver_data,
5684 },
5685 {
5686 .init = beep_init,
5687 .data = &beep_driver_data,
5688 },
5689 {
5690 .init = thermal_init,
5691 .data = &thermal_driver_data,
5692 },
5693 {
5694 .data = &ecdump_driver_data,
5695 },
5696 {
5697 .init = brightness_init,
5698 .data = &brightness_driver_data,
5699 },
5700 {
5701 .data = &volume_driver_data,
5702 },
5703 {
5704 .init = fan_init,
5705 .data = &fan_driver_data,
5706 },
5707 };
5708
5709 static int __init set_ibm_param(const char *val, struct kernel_param *kp)
5710 {
5711 unsigned int i;
5712 struct ibm_struct *ibm;
5713
5714 if (!kp || !kp->name || !val)
5715 return -EINVAL;
5716
5717 for (i = 0; i < ARRAY_SIZE(ibms_init); i++) {
5718 ibm = ibms_init[i].data;
5719 WARN_ON(ibm == NULL);
5720
5721 if (!ibm || !ibm->name)
5722 continue;
5723
5724 if (strcmp(ibm->name, kp->name) == 0 && ibm->write) {
5725 if (strlen(val) > sizeof(ibms_init[i].param) - 2)
5726 return -ENOSPC;
5727 strcpy(ibms_init[i].param, val);
5728 strcat(ibms_init[i].param, ",");
5729 return 0;
5730 }
5731 }
5732
5733 return -EINVAL;
5734 }
5735
5736 module_param(experimental, int, 0);
5737
5738 module_param_named(debug, dbg_level, uint, 0);
5739
5740 module_param(force_load, bool, 0);
5741
5742 module_param_named(fan_control, fan_control_allowed, bool, 0);
5743
5744 module_param_named(brightness_mode, brightness_mode, int, 0);
5745
5746 module_param(brightness_enable, uint, 0);
5747
5748 module_param(hotkey_report_mode, uint, 0);
5749
5750 #define IBM_PARAM(feature) \
5751 module_param_call(feature, set_ibm_param, NULL, NULL, 0)
5752
5753 IBM_PARAM(hotkey);
5754 IBM_PARAM(bluetooth);
5755 IBM_PARAM(video);
5756 IBM_PARAM(light);
5757 #ifdef CONFIG_THINKPAD_ACPI_DOCK
5758 IBM_PARAM(dock);
5759 #endif
5760 #ifdef CONFIG_THINKPAD_ACPI_BAY
5761 IBM_PARAM(bay);
5762 #endif /* CONFIG_THINKPAD_ACPI_BAY */
5763 IBM_PARAM(cmos);
5764 IBM_PARAM(led);
5765 IBM_PARAM(beep);
5766 IBM_PARAM(ecdump);
5767 IBM_PARAM(brightness);
5768 IBM_PARAM(volume);
5769 IBM_PARAM(fan);
5770
5771 static void thinkpad_acpi_module_exit(void)
5772 {
5773 struct ibm_struct *ibm, *itmp;
5774
5775 tpacpi_lifecycle = TPACPI_LIFE_EXITING;
5776
5777 list_for_each_entry_safe_reverse(ibm, itmp,
5778 &tpacpi_all_drivers,
5779 all_drivers) {
5780 ibm_exit(ibm);
5781 }
5782
5783 dbg_printk(TPACPI_DBG_INIT, "finished subdriver exit path...\n");
5784
5785 if (tpacpi_inputdev) {
5786 if (tp_features.input_device_registered)
5787 input_unregister_device(tpacpi_inputdev);
5788 else
5789 input_free_device(tpacpi_inputdev);
5790 }
5791
5792 if (tpacpi_hwmon)
5793 hwmon_device_unregister(tpacpi_hwmon);
5794
5795 if (tp_features.sensors_pdev_attrs_registered)
5796 device_remove_file(&tpacpi_sensors_pdev->dev,
5797 &dev_attr_thinkpad_acpi_pdev_name);
5798 if (tpacpi_sensors_pdev)
5799 platform_device_unregister(tpacpi_sensors_pdev);
5800 if (tpacpi_pdev)
5801 platform_device_unregister(tpacpi_pdev);
5802
5803 if (tp_features.sensors_pdrv_attrs_registered)
5804 tpacpi_remove_driver_attributes(&tpacpi_hwmon_pdriver.driver);
5805 if (tp_features.platform_drv_attrs_registered)
5806 tpacpi_remove_driver_attributes(&tpacpi_pdriver.driver);
5807
5808 if (tp_features.sensors_pdrv_registered)
5809 platform_driver_unregister(&tpacpi_hwmon_pdriver);
5810
5811 if (tp_features.platform_drv_registered)
5812 platform_driver_unregister(&tpacpi_pdriver);
5813
5814 if (proc_dir)
5815 remove_proc_entry(IBM_PROC_DIR, acpi_root_dir);
5816
5817 kfree(thinkpad_id.bios_version_str);
5818 kfree(thinkpad_id.ec_version_str);
5819 kfree(thinkpad_id.model_str);
5820 }
5821
5822
5823 static int __init thinkpad_acpi_module_init(void)
5824 {
5825 int ret, i;
5826
5827 tpacpi_lifecycle = TPACPI_LIFE_INIT;
5828
5829 /* Parameter checking */
5830 if (hotkey_report_mode > 2)
5831 return -EINVAL;
5832
5833 /* Driver-level probe */
5834
5835 get_thinkpad_model_data(&thinkpad_id);
5836 ret = probe_for_thinkpad();
5837 if (ret) {
5838 thinkpad_acpi_module_exit();
5839 return ret;
5840 }
5841
5842 /* Driver initialization */
5843
5844 IBM_ACPIHANDLE_INIT(ecrd);
5845 IBM_ACPIHANDLE_INIT(ecwr);
5846
5847 proc_dir = proc_mkdir(IBM_PROC_DIR, acpi_root_dir);
5848 if (!proc_dir) {
5849 printk(IBM_ERR "unable to create proc dir " IBM_PROC_DIR);
5850 thinkpad_acpi_module_exit();
5851 return -ENODEV;
5852 }
5853 proc_dir->owner = THIS_MODULE;
5854
5855 ret = platform_driver_register(&tpacpi_pdriver);
5856 if (ret) {
5857 printk(IBM_ERR "unable to register main platform driver\n");
5858 thinkpad_acpi_module_exit();
5859 return ret;
5860 }
5861 tp_features.platform_drv_registered = 1;
5862
5863 ret = platform_driver_register(&tpacpi_hwmon_pdriver);
5864 if (ret) {
5865 printk(IBM_ERR "unable to register hwmon platform driver\n");
5866 thinkpad_acpi_module_exit();
5867 return ret;
5868 }
5869 tp_features.sensors_pdrv_registered = 1;
5870
5871 ret = tpacpi_create_driver_attributes(&tpacpi_pdriver.driver);
5872 if (!ret) {
5873 tp_features.platform_drv_attrs_registered = 1;
5874 ret = tpacpi_create_driver_attributes(&tpacpi_hwmon_pdriver.driver);
5875 }
5876 if (ret) {
5877 printk(IBM_ERR "unable to create sysfs driver attributes\n");
5878 thinkpad_acpi_module_exit();
5879 return ret;
5880 }
5881 tp_features.sensors_pdrv_attrs_registered = 1;
5882
5883
5884 /* Device initialization */
5885 tpacpi_pdev = platform_device_register_simple(IBM_DRVR_NAME, -1,
5886 NULL, 0);
5887 if (IS_ERR(tpacpi_pdev)) {
5888 ret = PTR_ERR(tpacpi_pdev);
5889 tpacpi_pdev = NULL;
5890 printk(IBM_ERR "unable to register platform device\n");
5891 thinkpad_acpi_module_exit();
5892 return ret;
5893 }
5894 tpacpi_sensors_pdev = platform_device_register_simple(
5895 IBM_HWMON_DRVR_NAME,
5896 -1, NULL, 0);
5897 if (IS_ERR(tpacpi_sensors_pdev)) {
5898 ret = PTR_ERR(tpacpi_sensors_pdev);
5899 tpacpi_sensors_pdev = NULL;
5900 printk(IBM_ERR "unable to register hwmon platform device\n");
5901 thinkpad_acpi_module_exit();
5902 return ret;
5903 }
5904 ret = device_create_file(&tpacpi_sensors_pdev->dev,
5905 &dev_attr_thinkpad_acpi_pdev_name);
5906 if (ret) {
5907 printk(IBM_ERR
5908 "unable to create sysfs hwmon device attributes\n");
5909 thinkpad_acpi_module_exit();
5910 return ret;
5911 }
5912 tp_features.sensors_pdev_attrs_registered = 1;
5913 tpacpi_hwmon = hwmon_device_register(&tpacpi_sensors_pdev->dev);
5914 if (IS_ERR(tpacpi_hwmon)) {
5915 ret = PTR_ERR(tpacpi_hwmon);
5916 tpacpi_hwmon = NULL;
5917 printk(IBM_ERR "unable to register hwmon device\n");
5918 thinkpad_acpi_module_exit();
5919 return ret;
5920 }
5921 mutex_init(&tpacpi_inputdev_send_mutex);
5922 tpacpi_inputdev = input_allocate_device();
5923 if (!tpacpi_inputdev) {
5924 printk(IBM_ERR "unable to allocate input device\n");
5925 thinkpad_acpi_module_exit();
5926 return -ENOMEM;
5927 } else {
5928 /* Prepare input device, but don't register */
5929 tpacpi_inputdev->name = "ThinkPad Extra Buttons";
5930 tpacpi_inputdev->phys = IBM_DRVR_NAME "/input0";
5931 tpacpi_inputdev->id.bustype = BUS_HOST;
5932 tpacpi_inputdev->id.vendor = (thinkpad_id.vendor) ?
5933 thinkpad_id.vendor :
5934 PCI_VENDOR_ID_IBM;
5935 tpacpi_inputdev->id.product = TPACPI_HKEY_INPUT_PRODUCT;
5936 tpacpi_inputdev->id.version = TPACPI_HKEY_INPUT_VERSION;
5937 }
5938 for (i = 0; i < ARRAY_SIZE(ibms_init); i++) {
5939 ret = ibm_init(&ibms_init[i]);
5940 if (ret >= 0 && *ibms_init[i].param)
5941 ret = ibms_init[i].data->write(ibms_init[i].param);
5942 if (ret < 0) {
5943 thinkpad_acpi_module_exit();
5944 return ret;
5945 }
5946 }
5947 ret = input_register_device(tpacpi_inputdev);
5948 if (ret < 0) {
5949 printk(IBM_ERR "unable to register input device\n");
5950 thinkpad_acpi_module_exit();
5951 return ret;
5952 } else {
5953 tp_features.input_device_registered = 1;
5954 }
5955
5956 tpacpi_lifecycle = TPACPI_LIFE_RUNNING;
5957 return 0;
5958 }
5959
5960 module_init(thinkpad_acpi_module_init);
5961 module_exit(thinkpad_acpi_module_exit);
Linux 2.6 ibm-acpi/thinkpad-acpi driver git tree