?  search:
summary | log | graphiclog1 | graphiclog2 | commit | commitdiff | tree | refs | edit | fork
blame | history | raw | HEAD
ACPI: thinkpad-acpi: spring cleanup part 2
[linux-2.6/linux-acpi-2.6/ibm-acpi-2.6.git] / drivers / misc / thinkpad_acpi.c
blobe435b554a004ebf1373b1415b0714afd3a1c62cb
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 * 2007-03-27 0.14 renamed to thinkpad_acpi and moved to
30 * drivers/misc.
31 *
32 * 2006-11-22 0.13 new maintainer
33 * changelog now lives in git commit history, and will
34 * not be updated further in-file.
35 *
36 * 2005-08-17 0.12 fix compilation on 2.6.13-rc kernels
37 * 2005-03-17 0.11 support for 600e, 770x
38 * thanks to Jamie Lentin <lentinj@dial.pipex.com>
39 * support for 770e, G41
40 * G40 and G41 don't have a thinklight
41 * temperatures no longer experimental
42 * experimental brightness control
43 * experimental volume control
44 * experimental fan enable/disable
45 * 2005-01-16 0.10 fix module loading on R30, R31
46 * 2005-01-16 0.9 support for 570, R30, R31
47 * ultrabay support on A22p, A3x
48 * limit arg for cmos, led, beep, drop experimental status
49 * more capable led control on A21e, A22p, T20-22, X20
50 * experimental temperatures and fan speed
51 * experimental embedded controller register dump
52 * mark more functions as __init, drop incorrect __exit
53 * use MODULE_VERSION
54 * thanks to Henrik Brix Andersen <brix@gentoo.org>
55 * fix parameter passing on module loading
56 * thanks to Rusty Russell <rusty@rustcorp.com.au>
57 * thanks to Jim Radford <radford@blackbean.org>
58 * 2004-11-08 0.8 fix init error case, don't return from a macro
59 * thanks to Chris Wright <chrisw@osdl.org>
60 * 2004-10-23 0.7 fix module loading on A21e, A22p, T20, T21, X20
61 * fix led control on A21e
62 * 2004-10-19 0.6 use acpi_bus_register_driver() to claim HKEY device
63 * 2004-10-18 0.5 thinklight support on A21e, G40, R32, T20, T21, X20
64 * proc file format changed
65 * video_switch command
66 * experimental cmos control
67 * experimental led control
68 * experimental acpi sounds
69 * 2004-09-16 0.4 support for module parameters
70 * hotkey mask can be prefixed by 0x
71 * video output switching
72 * video expansion control
73 * ultrabay eject support
74 * removed lcd brightness/on/off control, didn't work
75 * 2004-08-17 0.3 support for R40
76 * lcd off, brightness control
77 * thinklight on/off
78 * 2004-08-14 0.2 support for T series, X20
79 * bluetooth enable/disable
80 * hotkey events disabled by default
81 * removed fan control, currently useless
82 * 2004-08-09 0.1 initial release, support for X series
83 */
84
85 #include <linux/kernel.h>
86 #include <linux/module.h>
87 #include <linux/init.h>
88 #include <linux/types.h>
89 #include <linux/string.h>
90 #include <linux/list.h>
91 #include <linux/mutex.h>
92 #include <linux/kthread.h>
93 #include <linux/freezer.h>
94 #include <linux/delay.h>
95
96 #include <linux/nvram.h>
97 #include <linux/proc_fs.h>
98 #include <linux/sysfs.h>
99 #include <linux/backlight.h>
100 #include <linux/fb.h>
101 #include <linux/platform_device.h>
102 #include <linux/hwmon.h>
103 #include <linux/hwmon-sysfs.h>
104 #include <linux/input.h>
105 #include <asm/uaccess.h>
106
107 #include <linux/dmi.h>
108 #include <linux/jiffies.h>
109 #include <linux/workqueue.h>
110
111 #include <acpi/acpi_drivers.h>
112 #include <acpi/acnamesp.h>
113
114 #include <linux/pci_ids.h>
115
116 /****************************************************************************
117 * Main driver
118 */
119
120 #define IBM_NAME "thinkpad"
121 #define IBM_DESC "ThinkPad ACPI Extras"
122 #define IBM_FILE IBM_NAME "_acpi"
123 #define IBM_URL "http://ibm-acpi.sf.net/"
124 #define IBM_MAIL "ibm-acpi-devel@lists.sourceforge.net"
125
126 #define IBM_PROC_DIR "ibm"
127 #define IBM_ACPI_EVENT_PREFIX "ibm"
128 #define IBM_DRVR_NAME IBM_FILE
129 #define IBM_HWMON_DRVR_NAME IBM_NAME "_hwmon"
130
131 #define IBM_LOG IBM_FILE ": "
132 #define IBM_ERR KERN_ERR IBM_LOG
133 #define IBM_NOTICE KERN_NOTICE IBM_LOG
134 #define IBM_INFO KERN_INFO IBM_LOG
135 #define IBM_DEBUG KERN_DEBUG IBM_LOG
136
137 #define IBM_MAX_ACPI_ARGS 3
138
139 /* ThinkPad CMOS commands */
140 #define TP_CMOS_VOLUME_DOWN 0
141 #define TP_CMOS_VOLUME_UP 1
142 #define TP_CMOS_VOLUME_MUTE 2
143 #define TP_CMOS_BRIGHTNESS_UP 4
144 #define TP_CMOS_BRIGHTNESS_DOWN 5
145
146 /* NVRAM Addresses */
147 enum tp_nvram_addr {
148 TP_NVRAM_ADDR_HK2 = 0x57,
149 TP_NVRAM_ADDR_THINKLIGHT = 0x58,
150 TP_NVRAM_ADDR_VIDEO = 0x59,
151 TP_NVRAM_ADDR_BRIGHTNESS = 0x5e,
152 TP_NVRAM_ADDR_MIXER = 0x60,
153 };
154
155 /* NVRAM bit masks */
156 enum {
157 TP_NVRAM_MASK_HKT_THINKPAD = 0x08,
158 TP_NVRAM_MASK_HKT_ZOOM = 0x20,
159 TP_NVRAM_MASK_HKT_DISPLAY = 0x40,
160 TP_NVRAM_MASK_HKT_HIBERNATE = 0x80,
161 TP_NVRAM_MASK_THINKLIGHT = 0x10,
162 TP_NVRAM_MASK_HKT_DISPEXPND = 0x30,
163 TP_NVRAM_MASK_HKT_BRIGHTNESS = 0x20,
164 TP_NVRAM_MASK_LEVEL_BRIGHTNESS = 0x0f,
165 TP_NVRAM_POS_LEVEL_BRIGHTNESS = 0,
166 TP_NVRAM_MASK_MUTE = 0x40,
167 TP_NVRAM_MASK_HKT_VOLUME = 0x80,
168 TP_NVRAM_MASK_LEVEL_VOLUME = 0x0f,
169 TP_NVRAM_POS_LEVEL_VOLUME = 0,
170 };
171
172 #define onoff(status,bit) ((status) & (1 << (bit)) ? "on" : "off")
173 #define enabled(status,bit) ((status) & (1 << (bit)) ? "enabled" : "disabled")
174 #define strlencmp(a,b) (strncmp((a), (b), strlen(b)))
175
176 /* Debugging */
177 #define TPACPI_DBG_ALL 0xffff
178 #define TPACPI_DBG_ALL 0xffff
179 #define TPACPI_DBG_INIT 0x0001
180 #define TPACPI_DBG_EXIT 0x0002
181 #define dbg_printk(a_dbg_level, format, arg...) \
182 do { if (dbg_level & a_dbg_level) \
183 printk(IBM_DEBUG "%s: " format, __func__ , ## arg); } while (0)
184 #ifdef CONFIG_THINKPAD_ACPI_DEBUG
185 #define vdbg_printk(a_dbg_level, format, arg...) \
186 dbg_printk(a_dbg_level, format, ## arg)
187 static const char *str_supported(int is_supported);
188 #else
189 #define vdbg_printk(a_dbg_level, format, arg...)
190 #endif
191
192 /* Input IDs */
193 #define TPACPI_HKEY_INPUT_VENDOR PCI_VENDOR_ID_IBM
194 #define TPACPI_HKEY_INPUT_PRODUCT 0x5054 /* "TP" */
195 #define TPACPI_HKEY_INPUT_VERSION 0x4101
196
197 /* ACPI HIDs */
198 #define IBM_HKEY_HID "IBM0068"
199
200 /* sysfs support */
201 struct attribute_set {
202 unsigned int members, max_members;
203 struct attribute_group group;
204 };
205
206 /* Helpers */
207 static int parse_strtoul(const char *buf, unsigned long max,
208 unsigned long *value);
209
210 /* Module */
211 static int experimental;
212 static u32 dbg_level;
213 static int force_load;
214 static unsigned int hotkey_report_mode;
215
216
217 /****************************************************************************
218 * Subdrivers
219 */
220
221 struct ibm_struct;
222
223 struct tp_acpi_drv_struct {
224 const struct acpi_device_id *hid;
225 struct acpi_driver *driver;
226
227 void (*notify) (struct ibm_struct *, u32);
228 acpi_handle *handle;
229 u32 type;
230 struct acpi_device *device;
231 };
232
233 struct ibm_struct {
234 char *name;
235
236 int (*read) (char *);
237 int (*write) (char *);
238 void (*exit) (void);
239 void (*resume) (void);
240
241 struct list_head all_drivers;
242
243 struct tp_acpi_drv_struct *acpi;
244
245 struct {
246 u8 acpi_driver_registered:1;
247 u8 acpi_notify_installed:1;
248 u8 proc_created:1;
249 u8 init_called:1;
250 u8 experimental:1;
251 } flags;
252 };
253
254 struct ibm_init_struct {
255 char param[32];
256
257 int (*init) (struct ibm_init_struct *);
258 struct ibm_struct *data;
259 };
260
261 static struct {
262 #ifdef CONFIG_THINKPAD_ACPI_BAY
263 u32 bay_status:1;
264 u32 bay_eject:1;
265 u32 bay_status2:1;
266 u32 bay_eject2:1;
267 #endif
268 u32 bluetooth:1;
269 u32 hotkey:1;
270 u32 hotkey_mask:1;
271 u32 hotkey_wlsw:1;
272 u32 light:1;
273 u32 light_status:1;
274 u32 bright_16levels:1;
275 u32 wan:1;
276 u32 fan_ctrl_status_undef:1;
277 u32 input_device_registered:1;
278 u32 platform_drv_registered:1;
279 u32 platform_drv_attrs_registered:1;
280 u32 sensors_pdrv_registered:1;
281 u32 sensors_pdrv_attrs_registered:1;
282 u32 sensors_pdev_attrs_registered:1;
283 u32 hotkey_poll_active:1;
284 } tp_features;
285
286 struct thinkpad_id_data {
287 unsigned int vendor; /* ThinkPad vendor:
288 * PCI_VENDOR_ID_IBM/PCI_VENDOR_ID_LENOVO */
289
290 char *bios_version_str; /* Something like 1ZET51WW (1.03z) */
291 char *ec_version_str; /* Something like 1ZHT51WW-1.04a */
292
293 u16 bios_model; /* Big Endian, TP-1Y = 0x5931, 0 = unknown */
294 u16 ec_model;
295
296 char *model_str;
297 };
298 static struct thinkpad_id_data thinkpad_id;
299
300 static LIST_HEAD(tpacpi_all_drivers);
301
302 MODULE_AUTHOR("Borislav Deianov, Henrique de Moraes Holschuh");
303 MODULE_DESCRIPTION(IBM_DESC);
304 MODULE_VERSION(IBM_VERSION);
305 MODULE_LICENSE("GPL");
306
307 /* Please remove this in year 2009 */
308 MODULE_ALIAS("ibm_acpi");
309
310 /*
311 * DMI matching for module autoloading
312 *
313 * See http://thinkwiki.org/wiki/List_of_DMI_IDs
314 * See http://thinkwiki.org/wiki/BIOS_Upgrade_Downloads
315 *
316 * Only models listed in thinkwiki will be supported, so add yours
317 * if it is not there yet.
318 */
319 #define IBM_BIOS_MODULE_ALIAS(__type) \
320 MODULE_ALIAS("dmi:bvnIBM:bvr" __type "ET??WW")
321
322 /* Non-ancient thinkpads */
323 MODULE_ALIAS("dmi:bvnIBM:*:svnIBM:*:pvrThinkPad*:rvnIBM:*");
324 MODULE_ALIAS("dmi:bvnLENOVO:*:svnLENOVO:*:pvrThinkPad*:rvnLENOVO:*");
325
326 /* Ancient thinkpad BIOSes have to be identified by
327 * BIOS type or model number, and there are far less
328 * BIOS types than model numbers... */
329 IBM_BIOS_MODULE_ALIAS("I[B,D,H,I,M,N,O,T,W,V,Y,Z]");
330 IBM_BIOS_MODULE_ALIAS("1[0,3,6,8,A-G,I,K,M-P,S,T]");
331 IBM_BIOS_MODULE_ALIAS("K[U,X-Z]");
332
333 #define __unused __attribute__ ((unused))
334
335 static enum {
336 TPACPI_LIFE_INIT = 0,
337 TPACPI_LIFE_RUNNING,
338 TPACPI_LIFE_EXITING,
339 } tpacpi_lifecycle;
340
341 /****************************************************************************
342 ****************************************************************************
343 *
344 * ACPI Helpers and device model
345 *
346 ****************************************************************************
347 ****************************************************************************/
348
349 /*************************************************************************
350 * ACPI basic handles
351 */
352
353 static acpi_handle root_handle;
354
355 #define IBM_HANDLE(object, parent, paths...) \
356 static acpi_handle object##_handle; \
357 static acpi_handle *object##_parent = &parent##_handle; \
358 static char *object##_path; \
359 static char *object##_paths[] = { paths }
360
361 IBM_HANDLE(ec, root, "\\_SB.PCI0.ISA.EC0", /* 240, 240x */
362 "\\_SB.PCI.ISA.EC", /* 570 */
363 "\\_SB.PCI0.ISA0.EC0", /* 600e/x, 770e, 770x */
364 "\\_SB.PCI0.ISA.EC", /* A21e, A2xm/p, T20-22, X20-21 */
365 "\\_SB.PCI0.AD4S.EC0", /* i1400, R30 */
366 "\\_SB.PCI0.ICH3.EC0", /* R31 */
367 "\\_SB.PCI0.LPC.EC", /* all others */
368 );
369
370 IBM_HANDLE(ecrd, ec, "ECRD"); /* 570 */
371 IBM_HANDLE(ecwr, ec, "ECWR"); /* 570 */
372
373
374 /*************************************************************************
375 * Misc ACPI handles
376 */
377
378 IBM_HANDLE(cmos, root, "\\UCMS", /* R50, R50e, R50p, R51, T4x, X31, X40 */
379 "\\CMOS", /* A3x, G4x, R32, T23, T30, X22-24, X30 */
380 "\\CMS", /* R40, R40e */
381 ); /* all others */
382
383 IBM_HANDLE(hkey, ec, "\\_SB.HKEY", /* 600e/x, 770e, 770x */
384 "^HKEY", /* R30, R31 */
385 "HKEY", /* all others */
386 ); /* 570 */
387
388
389 /*************************************************************************
390 * ACPI helpers
391 */
392
393 static int acpi_evalf(acpi_handle handle,
394 void *res, char *method, char *fmt, ...)
395 {
396 char *fmt0 = fmt;
397 struct acpi_object_list params;
398 union acpi_object in_objs[IBM_MAX_ACPI_ARGS];
399 struct acpi_buffer result, *resultp;
400 union acpi_object out_obj;
401 acpi_status status;
402 va_list ap;
403 char res_type;
404 int success;
405 int quiet;
406
407 if (!*fmt) {
408 printk(IBM_ERR "acpi_evalf() called with empty format\n");
409 return 0;
410 }
411
412 if (*fmt == 'q') {
413 quiet = 1;
414 fmt++;
415 } else
416 quiet = 0;
417
418 res_type = *(fmt++);
419
420 params.count = 0;
421 params.pointer = &in_objs[0];
422
423 va_start(ap, fmt);
424 while (*fmt) {
425 char c = *(fmt++);
426 switch (c) {
427 case 'd': /* int */
428 in_objs[params.count].integer.value = va_arg(ap, int);
429 in_objs[params.count++].type = ACPI_TYPE_INTEGER;
430 break;
431 /* add more types as needed */
432 default:
433 printk(IBM_ERR "acpi_evalf() called "
434 "with invalid format character '%c'\n", c);
435 return 0;
436 }
437 }
438 va_end(ap);
439
440 if (res_type != 'v') {
441 result.length = sizeof(out_obj);
442 result.pointer = &out_obj;
443 resultp = &result;
444 } else
445 resultp = NULL;
446
447 status = acpi_evaluate_object(handle, method, &params, resultp);
448
449 switch (res_type) {
450 case 'd': /* int */
451 if (res)
452 *(int *)res = out_obj.integer.value;
453 success = status == AE_OK && out_obj.type == ACPI_TYPE_INTEGER;
454 break;
455 case 'v': /* void */
456 success = status == AE_OK;
457 break;
458 /* add more types as needed */
459 default:
460 printk(IBM_ERR "acpi_evalf() called "
461 "with invalid format character '%c'\n", res_type);
462 return 0;
463 }
464
465 if (!success && !quiet)
466 printk(IBM_ERR "acpi_evalf(%s, %s, ...) failed: %d\n",
467 method, fmt0, status);
468
469 return success;
470 }
471
472 static void __unused acpi_print_int(acpi_handle handle, char *method)
473 {
474 int i;
475
476 if (acpi_evalf(handle, &i, method, "d"))
477 printk(IBM_INFO "%s = 0x%x\n", method, i);
478 else
479 printk(IBM_ERR "error calling %s\n", method);
480 }
481
482 static int acpi_ec_read(int i, u8 * p)
483 {
484 int v;
485
486 if (ecrd_handle) {
487 if (!acpi_evalf(ecrd_handle, &v, NULL, "dd", i))
488 return 0;
489 *p = v;
490 } else {
491 if (ec_read(i, p) < 0)
492 return 0;
493 }
494
495 return 1;
496 }
497
498 static int acpi_ec_write(int i, u8 v)
499 {
500 if (ecwr_handle) {
501 if (!acpi_evalf(ecwr_handle, NULL, NULL, "vdd", i, v))
502 return 0;
503 } else {
504 if (ec_write(i, v) < 0)
505 return 0;
506 }
507
508 return 1;
509 }
510
511 static int _sta(acpi_handle handle)
512 {
513 int status;
514
515 if (!handle || !acpi_evalf(handle, &status, "_STA", "d"))
516 status = 0;
517
518 return status;
519 }
520
521 static int issue_thinkpad_cmos_command(int cmos_cmd)
522 {
523 if (!cmos_handle)
524 return -ENXIO;
525
526 if (!acpi_evalf(cmos_handle, NULL, NULL, "vd", cmos_cmd))
527 return -EIO;
528
529 return 0;
530 }
531
532 /*************************************************************************
533 * ACPI device model
534 */
535
536 #define IBM_ACPIHANDLE_INIT(object) \
537 drv_acpi_handle_init(#object, &object##_handle, *object##_parent, \
538 object##_paths, ARRAY_SIZE(object##_paths), &object##_path)
539
540 static void drv_acpi_handle_init(char *name,
541 acpi_handle *handle, acpi_handle parent,
542 char **paths, int num_paths, char **path)
543 {
544 int i;
545 acpi_status status;
546
547 vdbg_printk(TPACPI_DBG_INIT, "trying to locate ACPI handle for %s\n",
548 name);
549
550 for (i = 0; i < num_paths; i++) {
551 status = acpi_get_handle(parent, paths[i], handle);
552 if (ACPI_SUCCESS(status)) {
553 *path = paths[i];
554 dbg_printk(TPACPI_DBG_INIT,
555 "Found ACPI handle %s for %s\n",
556 *path, name);
557 return;
558 }
559 }
560
561 vdbg_printk(TPACPI_DBG_INIT, "ACPI handle for %s not found\n",
562 name);
563 *handle = NULL;
564 }
565
566 static void dispatch_acpi_notify(acpi_handle handle, u32 event, void *data)
567 {
568 struct ibm_struct *ibm = data;
569
570 if (tpacpi_lifecycle != TPACPI_LIFE_RUNNING)
571 return;
572
573 if (!ibm || !ibm->acpi || !ibm->acpi->notify)
574 return;
575
576 ibm->acpi->notify(ibm, event);
577 }
578
579 static int __init setup_acpi_notify(struct ibm_struct *ibm)
580 {
581 acpi_status status;
582 int rc;
583
584 BUG_ON(!ibm->acpi);
585
586 if (!*ibm->acpi->handle)
587 return 0;
588
589 vdbg_printk(TPACPI_DBG_INIT,
590 "setting up ACPI notify for %s\n", ibm->name);
591
592 rc = acpi_bus_get_device(*ibm->acpi->handle, &ibm->acpi->device);
593 if (rc < 0) {
594 printk(IBM_ERR "acpi_bus_get_device(%s) failed: %d\n",
595 ibm->name, rc);
596 return -ENODEV;
597 }
598
599 acpi_driver_data(ibm->acpi->device) = ibm;
600 sprintf(acpi_device_class(ibm->acpi->device), "%s/%s",
601 IBM_ACPI_EVENT_PREFIX,
602 ibm->name);
603
604 status = acpi_install_notify_handler(*ibm->acpi->handle,
605 ibm->acpi->type, dispatch_acpi_notify, ibm);
606 if (ACPI_FAILURE(status)) {
607 if (status == AE_ALREADY_EXISTS) {
608 printk(IBM_NOTICE "another device driver is already handling %s events\n",
609 ibm->name);
610 } else {
611 printk(IBM_ERR "acpi_install_notify_handler(%s) failed: %d\n",
612 ibm->name, status);
613 }
614 return -ENODEV;
615 }
616 ibm->flags.acpi_notify_installed = 1;
617 return 0;
618 }
619
620 static int __init tpacpi_device_add(struct acpi_device *device)
621 {
622 return 0;
623 }
624
625 static int __init register_tpacpi_subdriver(struct ibm_struct *ibm)
626 {
627 int rc;
628
629 dbg_printk(TPACPI_DBG_INIT,
630 "registering %s as an ACPI driver\n", ibm->name);
631
632 BUG_ON(!ibm->acpi);
633
634 ibm->acpi->driver = kzalloc(sizeof(struct acpi_driver), GFP_KERNEL);
635 if (!ibm->acpi->driver) {
636 printk(IBM_ERR "kzalloc(ibm->driver) failed\n");
637 return -ENOMEM;
638 }
639
640 sprintf(ibm->acpi->driver->name, "%s_%s", IBM_NAME, ibm->name);
641 ibm->acpi->driver->ids = ibm->acpi->hid;
642
643 ibm->acpi->driver->ops.add = &tpacpi_device_add;
644
645 rc = acpi_bus_register_driver(ibm->acpi->driver);
646 if (rc < 0) {
647 printk(IBM_ERR "acpi_bus_register_driver(%s) failed: %d\n",
648 ibm->name, rc);
649 kfree(ibm->acpi->driver);
650 ibm->acpi->driver = NULL;
651 } else if (!rc)
652 ibm->flags.acpi_driver_registered = 1;
653
654 return rc;
655 }
656
657
658 /****************************************************************************
659 ****************************************************************************
660 *
661 * Procfs Helpers
662 *
663 ****************************************************************************
664 ****************************************************************************/
665
666 static int dispatch_procfs_read(char *page, char **start, off_t off,
667 int count, int *eof, void *data)
668 {
669 struct ibm_struct *ibm = data;
670 int len;
671
672 if (!ibm || !ibm->read)
673 return -EINVAL;
674
675 len = ibm->read(page);
676 if (len < 0)
677 return len;
678
679 if (len <= off + count)
680 *eof = 1;
681 *start = page + off;
682 len -= off;
683 if (len > count)
684 len = count;
685 if (len < 0)
686 len = 0;
687
688 return len;
689 }
690
691 static int dispatch_procfs_write(struct file *file,
692 const char __user * userbuf,
693 unsigned long count, void *data)
694 {
695 struct ibm_struct *ibm = data;
696 char *kernbuf;
697 int ret;
698
699 if (!ibm || !ibm->write)
700 return -EINVAL;
701
702 kernbuf = kmalloc(count + 2, GFP_KERNEL);
703 if (!kernbuf)
704 return -ENOMEM;
705
706 if (copy_from_user(kernbuf, userbuf, count)) {
707 kfree(kernbuf);
708 return -EFAULT;
709 }
710
711 kernbuf[count] = 0;
712 strcat(kernbuf, ",");
713 ret = ibm->write(kernbuf);
714 if (ret == 0)
715 ret = count;
716
717 kfree(kernbuf);
718
719 return ret;
720 }
721
722 static char *next_cmd(char **cmds)
723 {
724 char *start = *cmds;
725 char *end;
726
727 while ((end = strchr(start, ',')) && end == start)
728 start = end + 1;
729
730 if (!end)
731 return NULL;
732
733 *end = 0;
734 *cmds = end + 1;
735 return start;
736 }
737
738
739 /****************************************************************************
740 ****************************************************************************
741 *
742 * Device model: input, hwmon and platform
743 *
744 ****************************************************************************
745 ****************************************************************************/
746
747 static struct platform_device *tpacpi_pdev;
748 static struct platform_device *tpacpi_sensors_pdev;
749 static struct device *tpacpi_hwmon;
750 static struct input_dev *tpacpi_inputdev;
751 static struct mutex tpacpi_inputdev_send_mutex;
752
753
754 static int tpacpi_resume_handler(struct platform_device *pdev)
755 {
756 struct ibm_struct *ibm, *itmp;
757
758 list_for_each_entry_safe(ibm, itmp,
759 &tpacpi_all_drivers,
760 all_drivers) {
761 if (ibm->resume)
762 (ibm->resume)();
763 }
764
765 return 0;
766 }
767
768 static struct platform_driver tpacpi_pdriver = {
769 .driver = {
770 .name = IBM_DRVR_NAME,
771 .owner = THIS_MODULE,
772 },
773 .resume = tpacpi_resume_handler,
774 };
775
776 static struct platform_driver tpacpi_hwmon_pdriver = {
777 .driver = {
778 .name = IBM_HWMON_DRVR_NAME,
779 .owner = THIS_MODULE,
780 },
781 };
782
783 /*************************************************************************
784 * thinkpad-acpi driver attributes
785 */
786
787 /* interface_version --------------------------------------------------- */
788 static ssize_t tpacpi_driver_interface_version_show(
789 struct device_driver *drv,
790 char *buf)
791 {
792 return snprintf(buf, PAGE_SIZE, "0x%08x\n", TPACPI_SYSFS_VERSION);
793 }
794
795 static DRIVER_ATTR(interface_version, S_IRUGO,
796 tpacpi_driver_interface_version_show, NULL);
797
798 /* debug_level --------------------------------------------------------- */
799 static ssize_t tpacpi_driver_debug_show(struct device_driver *drv,
800 char *buf)
801 {
802 return snprintf(buf, PAGE_SIZE, "0x%04x\n", dbg_level);
803 }
804
805 static ssize_t tpacpi_driver_debug_store(struct device_driver *drv,
806 const char *buf, size_t count)
807 {
808 unsigned long t;
809
810 if (parse_strtoul(buf, 0xffff, &t))
811 return -EINVAL;
812
813 dbg_level = t;
814
815 return count;
816 }
817
818 static DRIVER_ATTR(debug_level, S_IWUSR | S_IRUGO,
819 tpacpi_driver_debug_show, tpacpi_driver_debug_store);
820
821 /* version ------------------------------------------------------------- */
822 static ssize_t tpacpi_driver_version_show(struct device_driver *drv,
823 char *buf)
824 {
825 return snprintf(buf, PAGE_SIZE, "%s v%s\n", IBM_DESC, IBM_VERSION);
826 }
827
828 static DRIVER_ATTR(version, S_IRUGO,
829 tpacpi_driver_version_show, NULL);
830
831 /* --------------------------------------------------------------------- */
832
833 static struct driver_attribute* tpacpi_driver_attributes[] = {
834 &driver_attr_debug_level, &driver_attr_version,
835 &driver_attr_interface_version,
836 };
837
838 static int __init tpacpi_create_driver_attributes(struct device_driver *drv)
839 {
840 int i, res;
841
842 i = 0;
843 res = 0;
844 while (!res && i < ARRAY_SIZE(tpacpi_driver_attributes)) {
845 res = driver_create_file(drv, tpacpi_driver_attributes[i]);
846 i++;
847 }
848
849 return res;
850 }
851
852 static void tpacpi_remove_driver_attributes(struct device_driver *drv)
853 {
854 int i;
855
856 for(i = 0; i < ARRAY_SIZE(tpacpi_driver_attributes); i++)
857 driver_remove_file(drv, tpacpi_driver_attributes[i]);
858 }
859
860 /*************************************************************************
861 * sysfs support helpers
862 */
863
864 struct attribute_set_obj {
865 struct attribute_set s;
866 struct attribute *a;
867 } __attribute__((packed));
868
869 static struct attribute_set *create_attr_set(unsigned int max_members,
870 const char* name)
871 {
872 struct attribute_set_obj *sobj;
873
874 if (max_members == 0)
875 return NULL;
876
877 /* Allocates space for implicit NULL at the end too */
878 sobj = kzalloc(sizeof(struct attribute_set_obj) +
879 max_members * sizeof(struct attribute *),
880 GFP_KERNEL);
881 if (!sobj)
882 return NULL;
883 sobj->s.max_members = max_members;
884 sobj->s.group.attrs = &sobj->a;
885 sobj->s.group.name = name;
886
887 return &sobj->s;
888 }
889
890 #define destroy_attr_set(_set) \
891 kfree(_set);
892
893 /* not multi-threaded safe, use it in a single thread per set */
894 static int add_to_attr_set(struct attribute_set* s, struct attribute *attr)
895 {
896 if (!s || !attr)
897 return -EINVAL;
898
899 if (s->members >= s->max_members)
900 return -ENOMEM;
901
902 s->group.attrs[s->members] = attr;
903 s->members++;
904
905 return 0;
906 }
907
908 static int add_many_to_attr_set(struct attribute_set* s,
909 struct attribute **attr,
910 unsigned int count)
911 {
912 int i, res;
913
914 for (i = 0; i < count; i++) {
915 res = add_to_attr_set(s, attr[i]);
916 if (res)
917 return res;
918 }
919
920 return 0;
921 }
922
923 static void delete_attr_set(struct attribute_set* s, struct kobject *kobj)
924 {
925 sysfs_remove_group(kobj, &s->group);
926 destroy_attr_set(s);
927 }
928
929 #define register_attr_set_with_sysfs(_attr_set, _kobj) \
930 sysfs_create_group(_kobj, &_attr_set->group)
931
932 static int parse_strtoul(const char *buf,
933 unsigned long max, unsigned long *value)
934 {
935 char *endp;
936
937 while (*buf && isspace(*buf))
938 buf++;
939 *value = simple_strtoul(buf, &endp, 0);
940 while (*endp && isspace(*endp))
941 endp++;
942 if (*endp || *value > max)
943 return -EINVAL;
944
945 return 0;
946 }
947
948 /****************************************************************************
949 ****************************************************************************
950 *
951 * Subdrivers
952 *
953 ****************************************************************************
954 ****************************************************************************/
955
956 /*************************************************************************
957 * thinkpad-acpi init subdriver
958 */
959
960 static int __init thinkpad_acpi_driver_init(struct ibm_init_struct *iibm)
961 {
962 printk(IBM_INFO "%s v%s\n", IBM_DESC, IBM_VERSION);
963 printk(IBM_INFO "%s\n", IBM_URL);
964
965 printk(IBM_INFO "ThinkPad BIOS %s, EC %s\n",
966 (thinkpad_id.bios_version_str) ?
967 thinkpad_id.bios_version_str : "unknown",
968 (thinkpad_id.ec_version_str) ?
969 thinkpad_id.ec_version_str : "unknown");
970
971 if (thinkpad_id.vendor && thinkpad_id.model_str)
972 printk(IBM_INFO "%s %s\n",
973 (thinkpad_id.vendor == PCI_VENDOR_ID_IBM) ?
974 "IBM" : ((thinkpad_id.vendor ==
975 PCI_VENDOR_ID_LENOVO) ?
976 "Lenovo" : "Unknown vendor"),
977 thinkpad_id.model_str);
978
979 return 0;
980 }
981
982 static int thinkpad_acpi_driver_read(char *p)
983 {
984 int len = 0;
985
986 len += sprintf(p + len, "driver:\t\t%s\n", IBM_DESC);
987 len += sprintf(p + len, "version:\t%s\n", IBM_VERSION);
988
989 return len;
990 }
991
992 static struct ibm_struct thinkpad_acpi_driver_data = {
993 .name = "driver",
994 .read = thinkpad_acpi_driver_read,
995 };
996
997 /*************************************************************************
998 * Hotkey subdriver
999 */
1000
1001 enum { /* hot key scan codes (derived from ACPI DSDT) */
1002 TP_ACPI_HOTKEYSCAN_FNF1 = 0,
1003 TP_ACPI_HOTKEYSCAN_FNF2,
1004 TP_ACPI_HOTKEYSCAN_FNF3,
1005 TP_ACPI_HOTKEYSCAN_FNF4,
1006 TP_ACPI_HOTKEYSCAN_FNF5,
1007 TP_ACPI_HOTKEYSCAN_FNF6,
1008 TP_ACPI_HOTKEYSCAN_FNF7,
1009 TP_ACPI_HOTKEYSCAN_FNF8,
1010 TP_ACPI_HOTKEYSCAN_FNF9,
1011 TP_ACPI_HOTKEYSCAN_FNF10,
1012 TP_ACPI_HOTKEYSCAN_FNF11,
1013 TP_ACPI_HOTKEYSCAN_FNF12,
1014 TP_ACPI_HOTKEYSCAN_FNBACKSPACE,
1015 TP_ACPI_HOTKEYSCAN_FNINSERT,
1016 TP_ACPI_HOTKEYSCAN_FNDELETE,
1017 TP_ACPI_HOTKEYSCAN_FNHOME,
1018 TP_ACPI_HOTKEYSCAN_FNEND,
1019 TP_ACPI_HOTKEYSCAN_FNPAGEUP,
1020 TP_ACPI_HOTKEYSCAN_FNPAGEDOWN,
1021 TP_ACPI_HOTKEYSCAN_FNSPACE,
1022 TP_ACPI_HOTKEYSCAN_VOLUMEUP,
1023 TP_ACPI_HOTKEYSCAN_VOLUMEDOWN,
1024 TP_ACPI_HOTKEYSCAN_MUTE,
1025 TP_ACPI_HOTKEYSCAN_THINKPAD,
1026 };
1027
1028 enum { /* Keys available through NVRAM polling */
1029 TPACPI_HKEY_NVRAM_KNOWN_MASK = 0x00fb88c0U,
1030 TPACPI_HKEY_NVRAM_GOOD_MASK = 0x00fb8000U,
1031 };
1032
1033 enum { /* Positions of some of the keys in hotkey masks */
1034 TP_ACPI_HKEY_DISPSWTCH_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNF7,
1035 TP_ACPI_HKEY_DISPXPAND_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNF8,
1036 TP_ACPI_HKEY_HIBERNATE_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNF12,
1037 TP_ACPI_HKEY_BRGHTUP_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNHOME,
1038 TP_ACPI_HKEY_BRGHTDWN_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNEND,
1039 TP_ACPI_HKEY_THNKLGHT_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNPAGEUP,
1040 TP_ACPI_HKEY_ZOOM_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNSPACE,
1041 TP_ACPI_HKEY_VOLUP_MASK = 1 << TP_ACPI_HOTKEYSCAN_VOLUMEUP,
1042 TP_ACPI_HKEY_VOLDWN_MASK = 1 << TP_ACPI_HOTKEYSCAN_VOLUMEDOWN,
1043 TP_ACPI_HKEY_MUTE_MASK = 1 << TP_ACPI_HOTKEYSCAN_MUTE,
1044 TP_ACPI_HKEY_THINKPAD_MASK = 1 << TP_ACPI_HOTKEYSCAN_THINKPAD,
1045 };
1046
1047 enum { /* NVRAM to ACPI HKEY group map */
1048 TP_NVRAM_HKEY_GROUP_HK2 = TP_ACPI_HKEY_THINKPAD_MASK |
1049 TP_ACPI_HKEY_ZOOM_MASK |
1050 TP_ACPI_HKEY_DISPSWTCH_MASK |
1051 TP_ACPI_HKEY_HIBERNATE_MASK,
1052 TP_NVRAM_HKEY_GROUP_BRIGHTNESS = TP_ACPI_HKEY_BRGHTUP_MASK |
1053 TP_ACPI_HKEY_BRGHTDWN_MASK,
1054 TP_NVRAM_HKEY_GROUP_VOLUME = TP_ACPI_HKEY_VOLUP_MASK |
1055 TP_ACPI_HKEY_VOLDWN_MASK |
1056 TP_ACPI_HKEY_MUTE_MASK,
1057 };
1058
1059 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
1060 struct tp_nvram_state {
1061 u16 thinkpad_toggle:1;
1062 u16 zoom_toggle:1;
1063 u16 display_toggle:1;
1064 u16 thinklight_toggle:1;
1065 u16 hibernate_toggle:1;
1066 u16 displayexp_toggle:1;
1067 u16 display_state:1;
1068 u16 brightness_toggle:1;
1069 u16 volume_toggle:1;
1070 u16 mute:1;
1071
1072 u8 brightness_level;
1073 u8 volume_level;
1074 };
1075
1076 static struct task_struct *tpacpi_hotkey_task;
1077 static u32 hotkey_source_mask; /* bit mask 0=ACPI,1=NVRAM */
1078 static int hotkey_poll_freq = 10; /* Hz */
1079 static struct mutex hotkey_thread_mutex;
1080 static struct mutex hotkey_thread_data_mutex;
1081 static unsigned int hotkey_config_change;
1082
1083 #else /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
1084
1085 #define hotkey_source_mask 0U
1086
1087 #endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
1088
1089 static struct mutex hotkey_mutex;
1090
1091 static int hotkey_orig_status;
1092 static u32 hotkey_orig_mask;
1093 static u32 hotkey_all_mask;
1094 static u32 hotkey_reserved_mask;
1095 static u32 hotkey_mask;
1096
1097 static u16 *hotkey_keycode_map;
1098
1099 static struct attribute_set *hotkey_dev_attributes;
1100
1101 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
1102 #define HOTKEY_CONFIG_CRITICAL_START \
1103 mutex_lock(&hotkey_thread_data_mutex); \
1104 hotkey_config_change++;
1105 #define HOTKEY_CONFIG_CRITICAL_END \
1106 mutex_unlock(&hotkey_thread_data_mutex);
1107 #else
1108 #define HOTKEY_CONFIG_CRITICAL_START
1109 #define HOTKEY_CONFIG_CRITICAL_END
1110 #endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
1111
1112 static int hotkey_get_wlsw(int *status)
1113 {
1114 if (!acpi_evalf(hkey_handle, status, "WLSW", "d"))
1115 return -EIO;
1116 return 0;
1117 }
1118
1119 /*
1120 * Call with hotkey_mutex held
1121 */
1122 static int hotkey_mask_get(void)
1123 {
1124 u32 m = 0;
1125
1126 if (tp_features.hotkey_mask) {
1127 if (!acpi_evalf(hkey_handle, &m, "DHKN", "d"))
1128 return -EIO;
1129 }
1130 hotkey_mask = m | (hotkey_source_mask & hotkey_mask);
1131
1132 return 0;
1133 }
1134
1135 /*
1136 * Call with hotkey_mutex held
1137 */
1138 static int hotkey_mask_set(u32 mask)
1139 {
1140 int i;
1141 int rc = 0;
1142
1143 if (tp_features.hotkey_mask) {
1144 HOTKEY_CONFIG_CRITICAL_START
1145 for (i = 0; i < 32; i++) {
1146 u32 m = 1 << i;
1147 /* enable in firmware mask only keys not in NVRAM
1148 * mode, but enable the key in the cached hotkey_mask
1149 * regardless of mode, or the key will end up
1150 * disabled by hotkey_mask_get() */
1151 if (!acpi_evalf(hkey_handle,
1152 NULL, "MHKM", "vdd", i + 1,
1153 !!((mask & ~hotkey_source_mask) & m))) {
1154 rc = -EIO;
1155 break;
1156 } else {
1157 hotkey_mask = (hotkey_mask & ~m) | (mask & m);
1158 }
1159 }
1160 HOTKEY_CONFIG_CRITICAL_END
1161
1162 /* hotkey_mask_get must be called unconditionally below */
1163 if (!hotkey_mask_get() && !rc &&
1164 (hotkey_mask & ~hotkey_source_mask) !=
1165 (mask & ~hotkey_source_mask)) {
1166 printk(IBM_NOTICE
1167 "requested hot key mask 0x%08x, but "
1168 "firmware forced it to 0x%08x\n",
1169 mask, hotkey_mask);
1170 }
1171 } else {
1172 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
1173 HOTKEY_CONFIG_CRITICAL_START
1174 hotkey_mask = mask & hotkey_source_mask;
1175 HOTKEY_CONFIG_CRITICAL_END
1176 hotkey_mask_get();
1177 if (hotkey_mask != mask) {
1178 printk(IBM_NOTICE
1179 "requested hot key mask 0x%08x, "
1180 "forced to 0x%08x (NVRAM poll mask is "
1181 "0x%08x): no firmware mask support\n",
1182 mask, hotkey_mask, hotkey_source_mask);
1183 }
1184 #else
1185 hotkey_mask_get();
1186 rc = -ENXIO;
1187 #endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
1188 }
1189
1190 return rc;
1191 }
1192
1193 static int hotkey_status_get(int *status)
1194 {
1195 if (!acpi_evalf(hkey_handle, status, "DHKC", "d"))
1196 return -EIO;
1197
1198 return 0;
1199 }
1200
1201 static int hotkey_status_set(int status)
1202 {
1203 if (!acpi_evalf(hkey_handle, NULL, "MHKC", "vd", status))
1204 return -EIO;
1205
1206 return 0;
1207 }
1208
1209 static void tpacpi_input_send_radiosw(void)
1210 {
1211 int wlsw;
1212
1213 mutex_lock(&tpacpi_inputdev_send_mutex);
1214
1215 if (tp_features.hotkey_wlsw && !hotkey_get_wlsw(&wlsw)) {
1216 input_report_switch(tpacpi_inputdev,
1217 SW_RADIO, !!wlsw);
1218 input_sync(tpacpi_inputdev);
1219 }
1220
1221 mutex_unlock(&tpacpi_inputdev_send_mutex);
1222 }
1223
1224 static void tpacpi_input_send_key(unsigned int scancode)
1225 {
1226 unsigned int keycode;
1227
1228 keycode = hotkey_keycode_map[scancode];
1229
1230 if (keycode != KEY_RESERVED) {
1231 mutex_lock(&tpacpi_inputdev_send_mutex);
1232
1233 input_report_key(tpacpi_inputdev, keycode, 1);
1234 if (keycode == KEY_UNKNOWN)
1235 input_event(tpacpi_inputdev, EV_MSC, MSC_SCAN,
1236 scancode);
1237 input_sync(tpacpi_inputdev);
1238
1239 input_report_key(tpacpi_inputdev, keycode, 0);
1240 if (keycode == KEY_UNKNOWN)
1241 input_event(tpacpi_inputdev, EV_MSC, MSC_SCAN,
1242 scancode);
1243 input_sync(tpacpi_inputdev);
1244
1245 mutex_unlock(&tpacpi_inputdev_send_mutex);
1246 }
1247 }
1248
1249 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
1250 static struct tp_acpi_drv_struct ibm_hotkey_acpidriver;
1251
1252 static void tpacpi_hotkey_send_key(unsigned int scancode)
1253 {
1254 tpacpi_input_send_key(scancode);
1255 if (hotkey_report_mode < 2) {
1256 acpi_bus_generate_proc_event(ibm_hotkey_acpidriver.device,
1257 0x80, 0x1001 + scancode);
1258 }
1259 }
1260
1261 static void hotkey_read_nvram(struct tp_nvram_state *n, u32 m)
1262 {
1263 u8 d;
1264
1265 if (m & TP_NVRAM_HKEY_GROUP_HK2) {
1266 d = nvram_read_byte(TP_NVRAM_ADDR_HK2);
1267 n->thinkpad_toggle = !!(d & TP_NVRAM_MASK_HKT_THINKPAD);
1268 n->zoom_toggle = !!(d & TP_NVRAM_MASK_HKT_ZOOM);
1269 n->display_toggle = !!(d & TP_NVRAM_MASK_HKT_DISPLAY);
1270 n->hibernate_toggle = !!(d & TP_NVRAM_MASK_HKT_HIBERNATE);
1271 }
1272 if (m & TP_ACPI_HKEY_THNKLGHT_MASK) {
1273 d = nvram_read_byte(TP_NVRAM_ADDR_THINKLIGHT);
1274 n->thinklight_toggle = !!(d & TP_NVRAM_MASK_THINKLIGHT);
1275 }
1276 if (m & TP_ACPI_HKEY_DISPXPAND_MASK) {
1277 d = nvram_read_byte(TP_NVRAM_ADDR_VIDEO);
1278 n->displayexp_toggle =
1279 !!(d & TP_NVRAM_MASK_HKT_DISPEXPND);
1280 }
1281 if (m & TP_NVRAM_HKEY_GROUP_BRIGHTNESS) {
1282 d = nvram_read_byte(TP_NVRAM_ADDR_BRIGHTNESS);
1283 n->brightness_level = (d & TP_NVRAM_MASK_LEVEL_BRIGHTNESS)
1284 >> TP_NVRAM_POS_LEVEL_BRIGHTNESS;
1285 n->brightness_toggle =
1286 !!(d & TP_NVRAM_MASK_HKT_BRIGHTNESS);
1287 }
1288 if (m & TP_NVRAM_HKEY_GROUP_VOLUME) {
1289 d = nvram_read_byte(TP_NVRAM_ADDR_MIXER);
1290 n->volume_level = (d & TP_NVRAM_MASK_LEVEL_VOLUME)
1291 >> TP_NVRAM_POS_LEVEL_VOLUME;
1292 n->mute = !!(d & TP_NVRAM_MASK_MUTE);
1293 n->volume_toggle = !!(d & TP_NVRAM_MASK_HKT_VOLUME);
1294 }
1295 }
1296
1297 #define TPACPI_COMPARE_KEY(__scancode, __member) \
1298 do { if ((mask & (1 << __scancode)) && oldn->__member != newn->__member) \
1299 tpacpi_hotkey_send_key(__scancode); } while (0)
1300
1301 #define TPACPI_MAY_SEND_KEY(__scancode) \
1302 do { if (mask & (1 << __scancode)) \
1303 tpacpi_hotkey_send_key(__scancode); } while (0)
1304
1305 static void hotkey_compare_and_issue_event(struct tp_nvram_state *oldn,
1306 struct tp_nvram_state *newn,
1307 u32 mask)
1308 {
1309 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_THINKPAD, thinkpad_toggle);
1310 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNSPACE, zoom_toggle);
1311 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNF7, display_toggle);
1312 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNF12, hibernate_toggle);
1313
1314 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNPAGEUP, thinklight_toggle);
1315
1316 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNF8, displayexp_toggle);
1317
1318 /* handle volume */
1319 if (oldn->volume_toggle != newn->volume_toggle) {
1320 if (oldn->mute != newn->mute) {
1321 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_MUTE);
1322 }
1323 if (oldn->volume_level > newn->volume_level) {
1324 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEDOWN);
1325 } else if (oldn->volume_level < newn->volume_level) {
1326 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEUP);
1327 } else if (oldn->mute == newn->mute) {
1328 /* repeated key presses that didn't change state */
1329 if (newn->mute) {
1330 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_MUTE);
1331 } else if (newn->volume_level != 0) {
1332 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEUP);
1333 } else {
1334 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEDOWN);
1335 }
1336 }
1337 }
1338
1339 /* handle brightness */
1340 if (oldn->brightness_toggle != newn->brightness_toggle) {
1341 if (oldn->brightness_level < newn->brightness_level) {
1342 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNHOME);
1343 } else if (oldn->brightness_level > newn->brightness_level) {
1344 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNEND);
1345 } else {
1346 /* repeated key presses that didn't change state */
1347 if (newn->brightness_level != 0) {
1348 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNHOME);
1349 } else {
1350 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNEND);
1351 }
1352 }
1353 }
1354 }
1355
1356 #undef TPACPI_COMPARE_KEY
1357 #undef TPACPI_MAY_SEND_KEY
1358
1359 static int hotkey_kthread(void *data)
1360 {
1361 struct tp_nvram_state s[2];
1362 u32 mask;
1363 unsigned int si, so;
1364 unsigned long t;
1365 unsigned int change_detector, must_reset;
1366
1367 mutex_lock(&hotkey_thread_mutex);
1368
1369 if (tpacpi_lifecycle == TPACPI_LIFE_EXITING)
1370 goto exit;
1371
1372 set_freezable();
1373
1374 so = 0;
1375 si = 1;
1376 t = 0;
1377
1378 /* Initial state for compares */
1379 mutex_lock(&hotkey_thread_data_mutex);
1380 change_detector = hotkey_config_change;
1381 mask = hotkey_source_mask & hotkey_mask;
1382 mutex_unlock(&hotkey_thread_data_mutex);
1383 hotkey_read_nvram(&s[so], mask);
1384
1385 while (!kthread_should_stop() && hotkey_poll_freq) {
1386 if (t == 0)
1387 t = 1000/hotkey_poll_freq;
1388 t = msleep_interruptible(t);
1389 if (unlikely(kthread_should_stop()))
1390 break;
1391 must_reset = try_to_freeze();
1392 if (t > 0 && !must_reset)
1393 continue;
1394
1395 mutex_lock(&hotkey_thread_data_mutex);
1396 if (must_reset || hotkey_config_change != change_detector) {
1397 /* forget old state on thaw or config change */
1398 si = so;
1399 t = 0;
1400 change_detector = hotkey_config_change;
1401 }
1402 mask = hotkey_source_mask & hotkey_mask;
1403 mutex_unlock(&hotkey_thread_data_mutex);
1404
1405 if (likely(mask)) {
1406 hotkey_read_nvram(&s[si], mask);
1407 if (likely(si != so)) {
1408 hotkey_compare_and_issue_event(&s[so], &s[si],
1409 mask);
1410 }
1411 }
1412
1413 so = si;
1414 si ^= 1;
1415 }
1416
1417 exit:
1418 mutex_unlock(&hotkey_thread_mutex);
1419 return 0;
1420 }
1421
1422 static void hotkey_poll_stop_sync(void)
1423 {
1424 if (tpacpi_hotkey_task) {
1425 if (frozen(tpacpi_hotkey_task) ||
1426 freezing(tpacpi_hotkey_task))
1427 thaw_process(tpacpi_hotkey_task);
1428
1429 kthread_stop(tpacpi_hotkey_task);
1430 tpacpi_hotkey_task = NULL;
1431 mutex_lock(&hotkey_thread_mutex);
1432 /* at this point, the thread did exit */
1433 mutex_unlock(&hotkey_thread_mutex);
1434 }
1435 }
1436
1437 /* call with hotkey_mutex held */
1438 static void hotkey_poll_setup(int may_warn)
1439 {
1440 if ((hotkey_source_mask & hotkey_mask) != 0 &&
1441 hotkey_poll_freq > 0 &&
1442 (tpacpi_inputdev->users > 0 || hotkey_report_mode < 2)) {
1443 if (!tpacpi_hotkey_task) {
1444 tpacpi_hotkey_task = kthread_run(hotkey_kthread,
1445 NULL, IBM_FILE "d");
1446 if (IS_ERR(tpacpi_hotkey_task)) {
1447 tpacpi_hotkey_task = NULL;
1448 printk(IBM_ERR "could not create kernel thread "
1449 "for hotkey polling\n");
1450 }
1451 }
1452 } else {
1453 hotkey_poll_stop_sync();
1454 if (may_warn &&
1455 hotkey_source_mask != 0 && hotkey_poll_freq == 0) {
1456 printk(IBM_NOTICE "hot keys 0x%08x require polling, "
1457 "which is currently disabled\n",
1458 hotkey_source_mask);
1459 }
1460 }
1461 }
1462
1463 static void hotkey_poll_setup_safe(int may_warn)
1464 {
1465 mutex_lock(&hotkey_mutex);
1466 hotkey_poll_setup(may_warn);
1467 mutex_unlock(&hotkey_mutex);
1468 }
1469
1470 static int hotkey_inputdev_open(struct input_dev *dev)
1471 {
1472 switch (tpacpi_lifecycle) {
1473 case TPACPI_LIFE_INIT:
1474 /*
1475 * hotkey_init will call hotkey_poll_setup_safe
1476 * at the appropriate moment
1477 */
1478 return 0;
1479 case TPACPI_LIFE_EXITING:
1480 return -EBUSY;
1481 case TPACPI_LIFE_RUNNING:
1482 hotkey_poll_setup_safe(0);
1483 return 0;
1484 }
1485
1486 /* Should only happen if tpacpi_lifecycle is corrupt */
1487 BUG();
1488 return -EBUSY;
1489 }
1490
1491 static void hotkey_inputdev_close(struct input_dev *dev)
1492 {
1493 /* disable hotkey polling when possible */
1494 if (tpacpi_lifecycle == TPACPI_LIFE_RUNNING)
1495 hotkey_poll_setup_safe(0);
1496 }
1497 #endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
1498
1499 /* sysfs hotkey enable ------------------------------------------------- */
1500 static ssize_t hotkey_enable_show(struct device *dev,
1501 struct device_attribute *attr,
1502 char *buf)
1503 {
1504 int res, status;
1505
1506 res = hotkey_status_get(&status);
1507 if (res)
1508 return res;
1509
1510 return snprintf(buf, PAGE_SIZE, "%d\n", status);
1511 }
1512
1513 static ssize_t hotkey_enable_store(struct device *dev,
1514 struct device_attribute *attr,
1515 const char *buf, size_t count)
1516 {
1517 unsigned long t;
1518 int res;
1519
1520 if (parse_strtoul(buf, 1, &t))
1521 return -EINVAL;
1522
1523 res = hotkey_status_set(t);
1524
1525 return (res) ? res : count;
1526 }
1527
1528 static struct device_attribute dev_attr_hotkey_enable =
1529 __ATTR(hotkey_enable, S_IWUSR | S_IRUGO,
1530 hotkey_enable_show, hotkey_enable_store);
1531
1532 /* sysfs hotkey mask --------------------------------------------------- */
1533 static ssize_t hotkey_mask_show(struct device *dev,
1534 struct device_attribute *attr,
1535 char *buf)
1536 {
1537 int res;
1538
1539 if (mutex_lock_interruptible(&hotkey_mutex))
1540 return -ERESTARTSYS;
1541 res = hotkey_mask_get();
1542 mutex_unlock(&hotkey_mutex);
1543
1544 return (res)?
1545 res : snprintf(buf, PAGE_SIZE, "0x%08x\n", hotkey_mask);
1546 }
1547
1548 static ssize_t hotkey_mask_store(struct device *dev,
1549 struct device_attribute *attr,
1550 const char *buf, size_t count)
1551 {
1552 unsigned long t;
1553 int res;
1554
1555 if (parse_strtoul(buf, 0xffffffffUL, &t))
1556 return -EINVAL;
1557
1558 if (mutex_lock_interruptible(&hotkey_mutex))
1559 return -ERESTARTSYS;
1560
1561 res = hotkey_mask_set(t);
1562
1563 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
1564 hotkey_poll_setup(1);
1565 #endif
1566
1567 mutex_unlock(&hotkey_mutex);
1568
1569 return (res) ? res : count;
1570 }
1571
1572 static struct device_attribute dev_attr_hotkey_mask =
1573 __ATTR(hotkey_mask, S_IWUSR | S_IRUGO,
1574 hotkey_mask_show, hotkey_mask_store);
1575
1576 /* sysfs hotkey bios_enabled ------------------------------------------- */
1577 static ssize_t hotkey_bios_enabled_show(struct device *dev,
1578 struct device_attribute *attr,
1579 char *buf)
1580 {
1581 return snprintf(buf, PAGE_SIZE, "%d\n", hotkey_orig_status);
1582 }
1583
1584 static struct device_attribute dev_attr_hotkey_bios_enabled =
1585 __ATTR(hotkey_bios_enabled, S_IRUGO, hotkey_bios_enabled_show, NULL);
1586
1587 /* sysfs hotkey bios_mask ---------------------------------------------- */
1588 static ssize_t hotkey_bios_mask_show(struct device *dev,
1589 struct device_attribute *attr,
1590 char *buf)
1591 {
1592 return snprintf(buf, PAGE_SIZE, "0x%08x\n", hotkey_orig_mask);
1593 }
1594
1595 static struct device_attribute dev_attr_hotkey_bios_mask =
1596 __ATTR(hotkey_bios_mask, S_IRUGO, hotkey_bios_mask_show, NULL);
1597
1598 /* sysfs hotkey all_mask ----------------------------------------------- */
1599 static ssize_t hotkey_all_mask_show(struct device *dev,
1600 struct device_attribute *attr,
1601 char *buf)
1602 {
1603 return snprintf(buf, PAGE_SIZE, "0x%08x\n",
1604 hotkey_all_mask | hotkey_source_mask);
1605 }
1606
1607 static struct device_attribute dev_attr_hotkey_all_mask =
1608 __ATTR(hotkey_all_mask, S_IRUGO, hotkey_all_mask_show, NULL);
1609
1610 /* sysfs hotkey recommended_mask --------------------------------------- */
1611 static ssize_t hotkey_recommended_mask_show(struct device *dev,
1612 struct device_attribute *attr,
1613 char *buf)
1614 {
1615 return snprintf(buf, PAGE_SIZE, "0x%08x\n",
1616 (hotkey_all_mask | hotkey_source_mask)
1617 & ~hotkey_reserved_mask);
1618 }
1619
1620 static struct device_attribute dev_attr_hotkey_recommended_mask =
1621 __ATTR(hotkey_recommended_mask, S_IRUGO,
1622 hotkey_recommended_mask_show, NULL);
1623
1624 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
1625
1626 /* sysfs hotkey hotkey_source_mask ------------------------------------- */
1627 static ssize_t hotkey_source_mask_show(struct device *dev,
1628 struct device_attribute *attr,
1629 char *buf)
1630 {
1631 return snprintf(buf, PAGE_SIZE, "0x%08x\n", hotkey_source_mask);
1632 }
1633
1634 static ssize_t hotkey_source_mask_store(struct device *dev,
1635 struct device_attribute *attr,
1636 const char *buf, size_t count)
1637 {
1638 unsigned long t;
1639
1640 if (parse_strtoul(buf, 0xffffffffUL, &t) ||
1641 ((t & ~TPACPI_HKEY_NVRAM_KNOWN_MASK) != 0))
1642 return -EINVAL;
1643
1644 if (mutex_lock_interruptible(&hotkey_mutex))
1645 return -ERESTARTSYS;
1646
1647 HOTKEY_CONFIG_CRITICAL_START
1648 hotkey_source_mask = t;
1649 HOTKEY_CONFIG_CRITICAL_END
1650
1651 hotkey_poll_setup(1);
1652
1653 mutex_unlock(&hotkey_mutex);
1654
1655 return count;
1656 }
1657
1658 static struct device_attribute dev_attr_hotkey_source_mask =
1659 __ATTR(hotkey_source_mask, S_IWUSR | S_IRUGO,
1660 hotkey_source_mask_show, hotkey_source_mask_store);
1661
1662 /* sysfs hotkey hotkey_poll_freq --------------------------------------- */
1663 static ssize_t hotkey_poll_freq_show(struct device *dev,
1664 struct device_attribute *attr,
1665 char *buf)
1666 {
1667 return snprintf(buf, PAGE_SIZE, "%d\n", hotkey_poll_freq);
1668 }
1669
1670 static ssize_t hotkey_poll_freq_store(struct device *dev,
1671 struct device_attribute *attr,
1672 const char *buf, size_t count)
1673 {
1674 unsigned long t;
1675
1676 if (parse_strtoul(buf, 25, &t))
1677 return -EINVAL;
1678
1679 if (mutex_lock_interruptible(&hotkey_mutex))
1680 return -ERESTARTSYS;
1681
1682 hotkey_poll_freq = t;
1683
1684 hotkey_poll_setup(1);
1685 mutex_unlock(&hotkey_mutex);
1686
1687 return count;
1688 }
1689
1690 static struct device_attribute dev_attr_hotkey_poll_freq =
1691 __ATTR(hotkey_poll_freq, S_IWUSR | S_IRUGO,
1692 hotkey_poll_freq_show, hotkey_poll_freq_store);
1693
1694 #endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
1695
1696 /* sysfs hotkey radio_sw ----------------------------------------------- */
1697 static ssize_t hotkey_radio_sw_show(struct device *dev,
1698 struct device_attribute *attr,
1699 char *buf)
1700 {
1701 int res, s;
1702 res = hotkey_get_wlsw(&s);
1703 if (res < 0)
1704 return res;
1705
1706 return snprintf(buf, PAGE_SIZE, "%d\n", !!s);
1707 }
1708
1709 static struct device_attribute dev_attr_hotkey_radio_sw =
1710 __ATTR(hotkey_radio_sw, S_IRUGO, hotkey_radio_sw_show, NULL);
1711
1712 /* sysfs hotkey report_mode -------------------------------------------- */
1713 static ssize_t hotkey_report_mode_show(struct device *dev,
1714 struct device_attribute *attr,
1715 char *buf)
1716 {
1717 return snprintf(buf, PAGE_SIZE, "%d\n",
1718 (hotkey_report_mode != 0) ? hotkey_report_mode : 1);
1719 }
1720
1721 static struct device_attribute dev_attr_hotkey_report_mode =
1722 __ATTR(hotkey_report_mode, S_IRUGO, hotkey_report_mode_show, NULL);
1723
1724 /* --------------------------------------------------------------------- */
1725
1726 static struct attribute *hotkey_attributes[] __initdata = {
1727 &dev_attr_hotkey_enable.attr,
1728 &dev_attr_hotkey_bios_enabled.attr,
1729 &dev_attr_hotkey_report_mode.attr,
1730 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
1731 &dev_attr_hotkey_mask.attr,
1732 &dev_attr_hotkey_all_mask.attr,
1733 &dev_attr_hotkey_recommended_mask.attr,
1734 &dev_attr_hotkey_source_mask.attr,
1735 &dev_attr_hotkey_poll_freq.attr,
1736 #endif
1737 };
1738
1739 static struct attribute *hotkey_mask_attributes[] __initdata = {
1740 &dev_attr_hotkey_bios_mask.attr,
1741 #ifndef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
1742 &dev_attr_hotkey_mask.attr,
1743 &dev_attr_hotkey_all_mask.attr,
1744 &dev_attr_hotkey_recommended_mask.attr,
1745 #endif
1746 };
1747
1748 static int __init hotkey_init(struct ibm_init_struct *iibm)
1749 {
1750 /* Requirements for changing the default keymaps:
1751 *
1752 * 1. Many of the keys are mapped to KEY_RESERVED for very
1753 * good reasons. Do not change them unless you have deep
1754 * knowledge on the IBM and Lenovo ThinkPad firmware for
1755 * the various ThinkPad models. The driver behaves
1756 * differently for KEY_RESERVED: such keys have their
1757 * hot key mask *unset* in mask_recommended, and also
1758 * in the initial hot key mask programmed into the
1759 * firmware at driver load time, which means the firm-
1760 * ware may react very differently if you change them to
1761 * something else;
1762 *
1763 * 2. You must be subscribed to the linux-thinkpad and
1764 * ibm-acpi-devel mailing lists, and you should read the
1765 * list archives since 2007 if you want to change the
1766 * keymaps. This requirement exists so that you will
1767 * know the past history of problems with the thinkpad-
1768 * acpi driver keymaps, and also that you will be
1769 * listening to any bug reports;
1770 *
1771 * 3. Do not send thinkpad-acpi specific patches directly to
1772 * for merging, *ever*. Send them to the linux-acpi
1773 * mailinglist for comments. Merging is to be done only
1774 * through acpi-test and the ACPI maintainer.
1775 *
1776 * If the above is too much to ask, don't change the keymap.
1777 * Ask the thinkpad-acpi maintainer to do it, instead.
1778 */
1779 static u16 ibm_keycode_map[] __initdata = {
1780 /* Scan Codes 0x00 to 0x0B: ACPI HKEY FN+F1..F12 */
1781 KEY_FN_F1, KEY_FN_F2, KEY_COFFEE, KEY_SLEEP,
1782 KEY_WLAN, KEY_FN_F6, KEY_SWITCHVIDEOMODE, KEY_FN_F8,
1783 KEY_FN_F9, KEY_FN_F10, KEY_FN_F11, KEY_SUSPEND,
1784
1785 /* Scan codes 0x0C to 0x1F: Other ACPI HKEY hot keys */
1786 KEY_UNKNOWN, /* 0x0C: FN+BACKSPACE */
1787 KEY_UNKNOWN, /* 0x0D: FN+INSERT */
1788 KEY_UNKNOWN, /* 0x0E: FN+DELETE */
1789
1790 /* brightness: firmware always reacts to them, unless
1791 * X.org did some tricks in the radeon BIOS scratch
1792 * registers of *some* models */
1793 KEY_RESERVED, /* 0x0F: FN+HOME (brightness up) */
1794 KEY_RESERVED, /* 0x10: FN+END (brightness down) */
1795
1796 /* Thinklight: firmware always react to it */
1797 KEY_RESERVED, /* 0x11: FN+PGUP (thinklight toggle) */
1798
1799 KEY_UNKNOWN, /* 0x12: FN+PGDOWN */
1800 KEY_ZOOM, /* 0x13: FN+SPACE (zoom) */
1801
1802 /* Volume: firmware always react to it and reprograms
1803 * the built-in *extra* mixer. Never map it to control
1804 * another mixer by default. */
1805 KEY_RESERVED, /* 0x14: VOLUME UP */
1806 KEY_RESERVED, /* 0x15: VOLUME DOWN */
1807 KEY_RESERVED, /* 0x16: MUTE */
1808
1809 KEY_VENDOR, /* 0x17: Thinkpad/AccessIBM/Lenovo */
1810
1811 /* (assignments unknown, please report if found) */
1812 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN,
1813 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN,
1814 };
1815 static u16 lenovo_keycode_map[] __initdata = {
1816 /* Scan Codes 0x00 to 0x0B: ACPI HKEY FN+F1..F12 */
1817 KEY_FN_F1, KEY_COFFEE, KEY_BATTERY, KEY_SLEEP,
1818 KEY_WLAN, KEY_FN_F6, KEY_SWITCHVIDEOMODE, KEY_FN_F8,
1819 KEY_FN_F9, KEY_FN_F10, KEY_FN_F11, KEY_SUSPEND,
1820
1821 /* Scan codes 0x0C to 0x1F: Other ACPI HKEY hot keys */
1822 KEY_UNKNOWN, /* 0x0C: FN+BACKSPACE */
1823 KEY_UNKNOWN, /* 0x0D: FN+INSERT */
1824 KEY_UNKNOWN, /* 0x0E: FN+DELETE */
1825
1826 KEY_RESERVED, /* 0x0F: FN+HOME (brightness up) */
1827 KEY_RESERVED, /* 0x10: FN+END (brightness down) */
1828
1829 KEY_RESERVED, /* 0x11: FN+PGUP (thinklight toggle) */
1830
1831 KEY_UNKNOWN, /* 0x12: FN+PGDOWN */
1832 KEY_ZOOM, /* 0x13: FN+SPACE (zoom) */
1833
1834 /* Volume: z60/z61, T60 (BIOS version?): firmware always
1835 * react to it and reprograms the built-in *extra* mixer.
1836 * Never map it to control another mixer by default.
1837 *
1838 * T60?, T61, R60?, R61: firmware and EC tries to send
1839 * these over the regular keyboard, so these are no-ops,
1840 * but there are still weird bugs re. MUTE, so do not
1841 * change unless you get test reports from all Lenovo
1842 * models. May cause the BIOS to interfere with the
1843 * HDA mixer.
1844 */
1845 KEY_RESERVED, /* 0x14: VOLUME UP */
1846 KEY_RESERVED, /* 0x15: VOLUME DOWN */
1847 KEY_RESERVED, /* 0x16: MUTE */
1848
1849 KEY_VENDOR, /* 0x17: Thinkpad/AccessIBM/Lenovo */
1850
1851 /* (assignments unknown, please report if found) */
1852 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN,
1853 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN,
1854 };
1855
1856 #define TPACPI_HOTKEY_MAP_LEN ARRAY_SIZE(ibm_keycode_map)
1857 #define TPACPI_HOTKEY_MAP_SIZE sizeof(ibm_keycode_map)
1858 #define TPACPI_HOTKEY_MAP_TYPESIZE sizeof(ibm_keycode_map[0])
1859
1860 int res, i;
1861 int status;
1862 int hkeyv;
1863
1864 vdbg_printk(TPACPI_DBG_INIT, "initializing hotkey subdriver\n");
1865
1866 BUG_ON(!tpacpi_inputdev);
1867 BUG_ON(tpacpi_inputdev->open != NULL ||
1868 tpacpi_inputdev->close != NULL);
1869
1870 IBM_ACPIHANDLE_INIT(hkey);
1871 mutex_init(&hotkey_mutex);
1872
1873 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
1874 mutex_init(&hotkey_thread_mutex);
1875 mutex_init(&hotkey_thread_data_mutex);
1876 #endif
1877
1878 /* hotkey not supported on 570 */
1879 tp_features.hotkey = hkey_handle != NULL;
1880
1881 vdbg_printk(TPACPI_DBG_INIT, "hotkeys are %s\n",
1882 str_supported(tp_features.hotkey));
1883
1884 if (tp_features.hotkey) {
1885 hotkey_dev_attributes = create_attr_set(10, NULL);
1886 if (!hotkey_dev_attributes)
1887 return -ENOMEM;
1888 res = add_many_to_attr_set(hotkey_dev_attributes,
1889 hotkey_attributes,
1890 ARRAY_SIZE(hotkey_attributes));
1891 if (res)
1892 return res;
1893
1894 /* mask not supported on 570, 600e/x, 770e, 770x, A21e, A2xm/p,
1895 A30, R30, R31, T20-22, X20-21, X22-24. Detected by checking
1896 for HKEY interface version 0x100 */
1897 if (acpi_evalf(hkey_handle, &hkeyv, "MHKV", "qd")) {
1898 if ((hkeyv >> 8) != 1) {
1899 printk(IBM_ERR "unknown version of the "
1900 "HKEY interface: 0x%x\n", hkeyv);
1901 printk(IBM_ERR "please report this to %s\n",
1902 IBM_MAIL);
1903 } else {
1904 /*
1905 * MHKV 0x100 in A31, R40, R40e,
1906 * T4x, X31, and later
1907 */
1908 tp_features.hotkey_mask = 1;
1909 }
1910 }
1911
1912 vdbg_printk(TPACPI_DBG_INIT, "hotkey masks are %s\n",
1913 str_supported(tp_features.hotkey_mask));
1914
1915 if (tp_features.hotkey_mask) {
1916 if (!acpi_evalf(hkey_handle, &hotkey_all_mask,
1917 "MHKA", "qd")) {
1918 printk(IBM_ERR
1919 "missing MHKA handler, "
1920 "please report this to %s\n",
1921 IBM_MAIL);
1922 hotkey_all_mask = 0x080cU; /* FN+F12, FN+F4, FN+F3 */
1923 }
1924 }
1925
1926 /* hotkey_source_mask *must* be zero for
1927 * the first hotkey_mask_get */
1928 res = hotkey_status_get(&hotkey_orig_status);
1929 if (!res && tp_features.hotkey_mask) {
1930 res = hotkey_mask_get();
1931 hotkey_orig_mask = hotkey_mask;
1932 if (!res) {
1933 res = add_many_to_attr_set(
1934 hotkey_dev_attributes,
1935 hotkey_mask_attributes,
1936 ARRAY_SIZE(hotkey_mask_attributes));
1937 }
1938 }
1939
1940 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
1941 if (tp_features.hotkey_mask) {
1942 hotkey_source_mask = TPACPI_HKEY_NVRAM_GOOD_MASK
1943 & ~hotkey_all_mask;
1944 } else {
1945 hotkey_source_mask = TPACPI_HKEY_NVRAM_GOOD_MASK;
1946 }
1947
1948 vdbg_printk(TPACPI_DBG_INIT,
1949 "hotkey source mask 0x%08x, polling freq %d\n",
1950 hotkey_source_mask, hotkey_poll_freq);
1951 #endif
1952
1953 /* Not all thinkpads have a hardware radio switch */
1954 if (!res && acpi_evalf(hkey_handle, &status, "WLSW", "qd")) {
1955 tp_features.hotkey_wlsw = 1;
1956 printk(IBM_INFO
1957 "radio switch found; radios are %s\n",
1958 enabled(status, 0));
1959 res = add_to_attr_set(hotkey_dev_attributes,
1960 &dev_attr_hotkey_radio_sw.attr);
1961 }
1962
1963 if (!res)
1964 res = register_attr_set_with_sysfs(
1965 hotkey_dev_attributes,
1966 &tpacpi_pdev->dev.kobj);
1967 if (res)
1968 return res;
1969
1970 /* Set up key map */
1971
1972 hotkey_keycode_map = kmalloc(TPACPI_HOTKEY_MAP_SIZE,
1973 GFP_KERNEL);
1974 if (!hotkey_keycode_map) {
1975 printk(IBM_ERR "failed to allocate memory for key map\n");
1976 return -ENOMEM;
1977 }
1978
1979 if (thinkpad_id.vendor == PCI_VENDOR_ID_LENOVO) {
1980 dbg_printk(TPACPI_DBG_INIT,
1981 "using Lenovo default hot key map\n");
1982 memcpy(hotkey_keycode_map, &lenovo_keycode_map,
1983 TPACPI_HOTKEY_MAP_SIZE);
1984 } else {
1985 dbg_printk(TPACPI_DBG_INIT,
1986 "using IBM default hot key map\n");
1987 memcpy(hotkey_keycode_map, &ibm_keycode_map,
1988 TPACPI_HOTKEY_MAP_SIZE);
1989 }
1990
1991 set_bit(EV_KEY, tpacpi_inputdev->evbit);
1992 set_bit(EV_MSC, tpacpi_inputdev->evbit);
1993 set_bit(MSC_SCAN, tpacpi_inputdev->mscbit);
1994 tpacpi_inputdev->keycodesize = TPACPI_HOTKEY_MAP_TYPESIZE;
1995 tpacpi_inputdev->keycodemax = TPACPI_HOTKEY_MAP_LEN;
1996 tpacpi_inputdev->keycode = hotkey_keycode_map;
1997 for (i = 0; i < TPACPI_HOTKEY_MAP_LEN; i++) {
1998 if (hotkey_keycode_map[i] != KEY_RESERVED) {
1999 set_bit(hotkey_keycode_map[i],
2000 tpacpi_inputdev->keybit);
2001 } else {
2002 if (i < sizeof(hotkey_reserved_mask)*8)
2003 hotkey_reserved_mask |= 1 << i;
2004 }
2005 }
2006
2007 if (tp_features.hotkey_wlsw) {
2008 set_bit(EV_SW, tpacpi_inputdev->evbit);
2009 set_bit(SW_RADIO, tpacpi_inputdev->swbit);
2010 }
2011
2012 dbg_printk(TPACPI_DBG_INIT,
2013 "enabling hot key handling\n");
2014 res = hotkey_status_set(1);
2015 if (res)
2016 return res;
2017 res = hotkey_mask_set(((hotkey_all_mask | hotkey_source_mask)
2018 & ~hotkey_reserved_mask)
2019 | hotkey_orig_mask);
2020 if (res < 0 && res != -ENXIO)
2021 return res;
2022
2023 dbg_printk(TPACPI_DBG_INIT,
2024 "legacy hot key reporting over procfs %s\n",
2025 (hotkey_report_mode < 2) ?
2026 "enabled" : "disabled");
2027
2028 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
2029 tpacpi_inputdev->open = &hotkey_inputdev_open;
2030 tpacpi_inputdev->close = &hotkey_inputdev_close;
2031
2032 hotkey_poll_setup_safe(1);
2033 #endif
2034 }
2035
2036 return (tp_features.hotkey)? 0 : 1;
2037 }
2038
2039 static void hotkey_exit(void)
2040 {
2041 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
2042 hotkey_poll_stop_sync();
2043 #endif
2044
2045 if (tp_features.hotkey) {
2046 dbg_printk(TPACPI_DBG_EXIT, "restoring original hot key mask\n");
2047 /* no short-circuit boolean operator below! */
2048 if ((hotkey_mask_set(hotkey_orig_mask) |
2049 hotkey_status_set(hotkey_orig_status)) != 0)
2050 printk(IBM_ERR "failed to restore hot key mask to BIOS defaults\n");
2051 }
2052
2053 if (hotkey_dev_attributes) {
2054 delete_attr_set(hotkey_dev_attributes, &tpacpi_pdev->dev.kobj);
2055 hotkey_dev_attributes = NULL;
2056 }
2057 }
2058
2059 static void hotkey_notify(struct ibm_struct *ibm, u32 event)
2060 {
2061 u32 hkey;
2062 unsigned int scancode;
2063 int send_acpi_ev;
2064 int ignore_acpi_ev;
2065
2066 if (event != 0x80) {
2067 printk(IBM_ERR "unknown HKEY notification event %d\n", event);
2068 /* forward it to userspace, maybe it knows how to handle it */
2069 acpi_bus_generate_netlink_event(ibm->acpi->device->pnp.device_class,
2070 ibm->acpi->device->dev.bus_id,
2071 event, 0);
2072 return;
2073 }
2074
2075 while (1) {
2076 if (!acpi_evalf(hkey_handle, &hkey, "MHKP", "d")) {
2077 printk(IBM_ERR "failed to retrieve HKEY event\n");
2078 return;
2079 }
2080
2081 if (hkey == 0) {
2082 /* queue empty */
2083 return;
2084 }
2085
2086 send_acpi_ev = 0;
2087 ignore_acpi_ev = 0;
2088
2089 switch (hkey >> 12) {
2090 case 1:
2091 /* 0x1000-0x1FFF: key presses */
2092 scancode = hkey & 0xfff;
2093 if (scancode > 0 && scancode < 0x21) {
2094 scancode--;
2095 if (!(hotkey_source_mask & (1 << scancode))) {
2096 tpacpi_input_send_key(scancode);
2097 } else {
2098 ignore_acpi_ev = 1;
2099 }
2100 } else {
2101 printk(IBM_ERR
2102 "hotkey 0x%04x out of range for keyboard map\n",
2103 hkey);
2104 send_acpi_ev = 1;
2105 }
2106 break;
2107 case 5:
2108 /* 0x5000-0x5FFF: LID */
2109 /* we don't handle it through this path, just
2110 * eat up known LID events */
2111 if (hkey != 0x5001 && hkey != 0x5002) {
2112 printk(IBM_ERR
2113 "unknown LID-related HKEY event: 0x%04x\n",
2114 hkey);
2115 send_acpi_ev = 1;
2116 } else {
2117 ignore_acpi_ev = 1;
2118 }
2119 break;
2120 case 7:
2121 /* 0x7000-0x7FFF: misc */
2122 if (tp_features.hotkey_wlsw && hkey == 0x7000) {
2123 tpacpi_input_send_radiosw();
2124 break;
2125 }
2126 /* fallthrough to default */
2127 default:
2128 /* case 2: dock-related */
2129 /* 0x2305 - T43 waking up due to bay lever eject while aslept */
2130 /* case 3: ultra-bay related. maybe bay in dock? */
2131 /* 0x3003 - T43 after wake up by bay lever eject (0x2305) */
2132 printk(IBM_NOTICE "unhandled HKEY event 0x%04x\n", hkey);
2133 send_acpi_ev = 1;
2134 }
2135
2136 /* Legacy events */
2137 if (!ignore_acpi_ev && (send_acpi_ev || hotkey_report_mode < 2)) {
2138 acpi_bus_generate_proc_event(ibm->acpi->device, event, hkey);
2139 }
2140
2141 /* netlink events */
2142 if (!ignore_acpi_ev && send_acpi_ev) {
2143 acpi_bus_generate_netlink_event(ibm->acpi->device->pnp.device_class,
2144 ibm->acpi->device->dev.bus_id,
2145 event, hkey);
2146 }
2147 }
2148 }
2149
2150 static void hotkey_resume(void)
2151 {
2152 if (hotkey_mask_get())
2153 printk(IBM_ERR "error while trying to read hot key mask from firmware\n");
2154 tpacpi_input_send_radiosw();
2155 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
2156 hotkey_poll_setup_safe(0);
2157 #endif
2158 }
2159
2160 /* procfs -------------------------------------------------------------- */
2161 static int hotkey_read(char *p)
2162 {
2163 int res, status;
2164 int len = 0;
2165
2166 if (!tp_features.hotkey) {
2167 len += sprintf(p + len, "status:\t\tnot supported\n");
2168 return len;
2169 }
2170
2171 if (mutex_lock_interruptible(&hotkey_mutex))
2172 return -ERESTARTSYS;
2173 res = hotkey_status_get(&status);
2174 if (!res)
2175 res = hotkey_mask_get();
2176 mutex_unlock(&hotkey_mutex);
2177 if (res)
2178 return res;
2179
2180 len += sprintf(p + len, "status:\t\t%s\n", enabled(status, 0));
2181 if (tp_features.hotkey_mask) {
2182 len += sprintf(p + len, "mask:\t\t0x%08x\n", hotkey_mask);
2183 len += sprintf(p + len,
2184 "commands:\tenable, disable, reset, <mask>\n");
2185 } else {
2186 len += sprintf(p + len, "mask:\t\tnot supported\n");
2187 len += sprintf(p + len, "commands:\tenable, disable, reset\n");
2188 }
2189
2190 return len;
2191 }
2192
2193 static int hotkey_write(char *buf)
2194 {
2195 int res, status;
2196 u32 mask;
2197 char *cmd;
2198
2199 if (!tp_features.hotkey)
2200 return -ENODEV;
2201
2202 if (mutex_lock_interruptible(&hotkey_mutex))
2203 return -ERESTARTSYS;
2204
2205 status = -1;
2206 mask = hotkey_mask;
2207
2208 res = 0;
2209 while ((cmd = next_cmd(&buf))) {
2210 if (strlencmp(cmd, "enable") == 0) {
2211 status = 1;
2212 } else if (strlencmp(cmd, "disable") == 0) {
2213 status = 0;
2214 } else if (strlencmp(cmd, "reset") == 0) {
2215 status = hotkey_orig_status;
2216 mask = hotkey_orig_mask;
2217 } else if (sscanf(cmd, "0x%x", &mask) == 1) {
2218 /* mask set */
2219 } else if (sscanf(cmd, "%x", &mask) == 1) {
2220 /* mask set */
2221 } else {
2222 res = -EINVAL;
2223 goto errexit;
2224 }
2225 }
2226 if (status != -1)
2227 res = hotkey_status_set(status);
2228
2229 if (!res && mask != hotkey_mask)
2230 res = hotkey_mask_set(mask);
2231
2232 errexit:
2233 mutex_unlock(&hotkey_mutex);
2234 return res;
2235 }
2236
2237 static const struct acpi_device_id ibm_htk_device_ids[] = {
2238 {IBM_HKEY_HID, 0},
2239 {"", 0},
2240 };
2241
2242 static struct tp_acpi_drv_struct ibm_hotkey_acpidriver = {
2243 .hid = ibm_htk_device_ids,
2244 .notify = hotkey_notify,
2245 .handle = &hkey_handle,
2246 .type = ACPI_DEVICE_NOTIFY,
2247 };
2248
2249 static struct ibm_struct hotkey_driver_data = {
2250 .name = "hotkey",
2251 .read = hotkey_read,
2252 .write = hotkey_write,
2253 .exit = hotkey_exit,
2254 .resume = hotkey_resume,
2255 .acpi = &ibm_hotkey_acpidriver,
2256 };
2257
2258 /*************************************************************************
2259 * Bluetooth subdriver
2260 */
2261
2262 enum {
2263 /* ACPI GBDC/SBDC bits */
2264 TP_ACPI_BLUETOOTH_HWPRESENT = 0x01, /* Bluetooth hw available */
2265 TP_ACPI_BLUETOOTH_RADIOSSW = 0x02, /* Bluetooth radio enabled */
2266 TP_ACPI_BLUETOOTH_UNK = 0x04, /* unknown function */
2267 };
2268
2269 static int bluetooth_get_radiosw(void);
2270 static int bluetooth_set_radiosw(int radio_on);
2271
2272 /* sysfs bluetooth enable ---------------------------------------------- */
2273 static ssize_t bluetooth_enable_show(struct device *dev,
2274 struct device_attribute *attr,
2275 char *buf)
2276 {
2277 int status;
2278
2279 status = bluetooth_get_radiosw();
2280 if (status < 0)
2281 return status;
2282
2283 return snprintf(buf, PAGE_SIZE, "%d\n", status ? 1 : 0);
2284 }
2285
2286 static ssize_t bluetooth_enable_store(struct device *dev,
2287 struct device_attribute *attr,
2288 const char *buf, size_t count)
2289 {
2290 unsigned long t;
2291 int res;
2292
2293 if (parse_strtoul(buf, 1, &t))
2294 return -EINVAL;
2295
2296 res = bluetooth_set_radiosw(t);
2297
2298 return (res) ? res : count;
2299 }
2300
2301 static struct device_attribute dev_attr_bluetooth_enable =
2302 __ATTR(bluetooth_enable, S_IWUSR | S_IRUGO,
2303 bluetooth_enable_show, bluetooth_enable_store);
2304
2305 /* --------------------------------------------------------------------- */
2306
2307 static struct attribute *bluetooth_attributes[] = {
2308 &dev_attr_bluetooth_enable.attr,
2309 NULL
2310 };
2311
2312 static const struct attribute_group bluetooth_attr_group = {
2313 .attrs = bluetooth_attributes,
2314 };
2315
2316 static int __init bluetooth_init(struct ibm_init_struct *iibm)
2317 {
2318 int res;
2319 int status = 0;
2320
2321 vdbg_printk(TPACPI_DBG_INIT, "initializing bluetooth subdriver\n");
2322
2323 IBM_ACPIHANDLE_INIT(hkey);
2324
2325 /* bluetooth not supported on 570, 600e/x, 770e, 770x, A21e, A2xm/p,
2326 G4x, R30, R31, R40e, R50e, T20-22, X20-21 */
2327 tp_features.bluetooth = hkey_handle &&
2328 acpi_evalf(hkey_handle, &status, "GBDC", "qd");
2329
2330 vdbg_printk(TPACPI_DBG_INIT, "bluetooth is %s, status 0x%02x\n",
2331 str_supported(tp_features.bluetooth),
2332 status);
2333
2334 if (tp_features.bluetooth) {
2335 if (!(status & TP_ACPI_BLUETOOTH_HWPRESENT)) {
2336 /* no bluetooth hardware present in system */
2337 tp_features.bluetooth = 0;
2338 dbg_printk(TPACPI_DBG_INIT,
2339 "bluetooth hardware not installed\n");
2340 } else {
2341 res = sysfs_create_group(&tpacpi_pdev->dev.kobj,
2342 &bluetooth_attr_group);
2343 if (res)
2344 return res;
2345 }
2346 }
2347
2348 return (tp_features.bluetooth)? 0 : 1;
2349 }
2350
2351 static void bluetooth_exit(void)
2352 {
2353 sysfs_remove_group(&tpacpi_pdev->dev.kobj,
2354 &bluetooth_attr_group);
2355 }
2356
2357 static int bluetooth_get_radiosw(void)
2358 {
2359 int status;
2360
2361 if (!tp_features.bluetooth)
2362 return -ENODEV;
2363
2364 if (!acpi_evalf(hkey_handle, &status, "GBDC", "d"))
2365 return -EIO;
2366
2367 return ((status & TP_ACPI_BLUETOOTH_RADIOSSW) != 0);
2368 }
2369
2370 static int bluetooth_set_radiosw(int radio_on)
2371 {
2372 int status;
2373
2374 if (!tp_features.bluetooth)
2375 return -ENODEV;
2376
2377 if (!acpi_evalf(hkey_handle, &status, "GBDC", "d"))
2378 return -EIO;
2379 if (radio_on)
2380 status |= TP_ACPI_BLUETOOTH_RADIOSSW;
2381 else
2382 status &= ~TP_ACPI_BLUETOOTH_RADIOSSW;
2383 if (!acpi_evalf(hkey_handle, NULL, "SBDC", "vd", status))
2384 return -EIO;
2385
2386 return 0;
2387 }
2388
2389 /* procfs -------------------------------------------------------------- */
2390 static int bluetooth_read(char *p)
2391 {
2392 int len = 0;
2393 int status = bluetooth_get_radiosw();
2394
2395 if (!tp_features.bluetooth)
2396 len += sprintf(p + len, "status:\t\tnot supported\n");
2397 else {
2398 len += sprintf(p + len, "status:\t\t%s\n",
2399 (status)? "enabled" : "disabled");
2400 len += sprintf(p + len, "commands:\tenable, disable\n");
2401 }
2402
2403 return len;
2404 }
2405
2406 static int bluetooth_write(char *buf)
2407 {
2408 char *cmd;
2409
2410 if (!tp_features.bluetooth)
2411 return -ENODEV;
2412
2413 while ((cmd = next_cmd(&buf))) {
2414 if (strlencmp(cmd, "enable") == 0) {
2415 bluetooth_set_radiosw(1);
2416 } else if (strlencmp(cmd, "disable") == 0) {
2417 bluetooth_set_radiosw(0);
2418 } else
2419 return -EINVAL;
2420 }
2421
2422 return 0;
2423 }
2424
2425 static struct ibm_struct bluetooth_driver_data = {
2426 .name = "bluetooth",
2427 .read = bluetooth_read,
2428 .write = bluetooth_write,
2429 .exit = bluetooth_exit,
2430 };
2431
2432 /*************************************************************************
2433 * Wan subdriver
2434 */
2435
2436 enum {
2437 /* ACPI GWAN/SWAN bits */
2438 TP_ACPI_WANCARD_HWPRESENT = 0x01, /* Wan hw available */
2439 TP_ACPI_WANCARD_RADIOSSW = 0x02, /* Wan radio enabled */
2440 TP_ACPI_WANCARD_UNK = 0x04, /* unknown function */
2441 };
2442
2443 static int wan_get_radiosw(void);
2444 static int wan_set_radiosw(int radio_on);
2445
2446 /* sysfs wan enable ---------------------------------------------------- */
2447 static ssize_t wan_enable_show(struct device *dev,
2448 struct device_attribute *attr,
2449 char *buf)
2450 {
2451 int status;
2452
2453 status = wan_get_radiosw();
2454 if (status < 0)
2455 return status;
2456
2457 return snprintf(buf, PAGE_SIZE, "%d\n", status ? 1 : 0);
2458 }
2459
2460 static ssize_t wan_enable_store(struct device *dev,
2461 struct device_attribute *attr,
2462 const char *buf, size_t count)
2463 {
2464 unsigned long t;
2465 int res;
2466
2467 if (parse_strtoul(buf, 1, &t))
2468 return -EINVAL;
2469
2470 res = wan_set_radiosw(t);
2471
2472 return (res) ? res : count;
2473 }
2474
2475 static struct device_attribute dev_attr_wan_enable =
2476 __ATTR(wwan_enable, S_IWUSR | S_IRUGO,
2477 wan_enable_show, wan_enable_store);
2478
2479 /* --------------------------------------------------------------------- */
2480
2481 static struct attribute *wan_attributes[] = {
2482 &dev_attr_wan_enable.attr,
2483 NULL
2484 };
2485
2486 static const struct attribute_group wan_attr_group = {
2487 .attrs = wan_attributes,
2488 };
2489
2490 static int __init wan_init(struct ibm_init_struct *iibm)
2491 {
2492 int res;
2493 int status = 0;
2494
2495 vdbg_printk(TPACPI_DBG_INIT, "initializing wan subdriver\n");
2496
2497 IBM_ACPIHANDLE_INIT(hkey);
2498
2499 tp_features.wan = hkey_handle &&
2500 acpi_evalf(hkey_handle, &status, "GWAN", "qd");
2501
2502 vdbg_printk(TPACPI_DBG_INIT, "wan is %s, status 0x%02x\n",
2503 str_supported(tp_features.wan),
2504 status);
2505
2506 if (tp_features.wan) {
2507 if (!(status & TP_ACPI_WANCARD_HWPRESENT)) {
2508 /* no wan hardware present in system */
2509 tp_features.wan = 0;
2510 dbg_printk(TPACPI_DBG_INIT,
2511 "wan hardware not installed\n");
2512 } else {
2513 res = sysfs_create_group(&tpacpi_pdev->dev.kobj,
2514 &wan_attr_group);
2515 if (res)
2516 return res;
2517 }
2518 }
2519
2520 return (tp_features.wan)? 0 : 1;
2521 }
2522
2523 static void wan_exit(void)
2524 {
2525 sysfs_remove_group(&tpacpi_pdev->dev.kobj,
2526 &wan_attr_group);
2527 }
2528
2529 static int wan_get_radiosw(void)
2530 {
2531 int status;
2532
2533 if (!tp_features.wan)
2534 return -ENODEV;
2535
2536 if (!acpi_evalf(hkey_handle, &status, "GWAN", "d"))
2537 return -EIO;
2538
2539 return ((status & TP_ACPI_WANCARD_RADIOSSW) != 0);
2540 }
2541
2542 static int wan_set_radiosw(int radio_on)
2543 {
2544 int status;
2545
2546 if (!tp_features.wan)
2547 return -ENODEV;
2548
2549 if (!acpi_evalf(hkey_handle, &status, "GWAN", "d"))
2550 return -EIO;
2551 if (radio_on)
2552 status |= TP_ACPI_WANCARD_RADIOSSW;
2553 else
2554 status &= ~TP_ACPI_WANCARD_RADIOSSW;
2555 if (!acpi_evalf(hkey_handle, NULL, "SWAN", "vd", status))
2556 return -EIO;
2557
2558 return 0;
2559 }
2560
2561 /* procfs -------------------------------------------------------------- */
2562 static int wan_read(char *p)
2563 {
2564 int len = 0;
2565 int status = wan_get_radiosw();
2566
2567 if (!tp_features.wan)
2568 len += sprintf(p + len, "status:\t\tnot supported\n");
2569 else {
2570 len += sprintf(p + len, "status:\t\t%s\n",
2571 (status)? "enabled" : "disabled");
2572 len += sprintf(p + len, "commands:\tenable, disable\n");
2573 }
2574
2575 return len;
2576 }
2577
2578 static int wan_write(char *buf)
2579 {
2580 char *cmd;
2581
2582 if (!tp_features.wan)
2583 return -ENODEV;
2584
2585 while ((cmd = next_cmd(&buf))) {
2586 if (strlencmp(cmd, "enable") == 0) {
2587 wan_set_radiosw(1);
2588 } else if (strlencmp(cmd, "disable") == 0) {
2589 wan_set_radiosw(0);
2590 } else
2591 return -EINVAL;
2592 }
2593
2594 return 0;
2595 }
2596
2597 static struct ibm_struct wan_driver_data = {
2598 .name = "wan",
2599 .read = wan_read,
2600 .write = wan_write,
2601 .exit = wan_exit,
2602 .flags.experimental = 1,
2603 };
2604
2605 /*************************************************************************
2606 * Video subdriver
2607 */
2608
2609 enum video_access_mode {
2610 TPACPI_VIDEO_NONE = 0,
2611 TPACPI_VIDEO_570, /* 570 */
2612 TPACPI_VIDEO_770, /* 600e/x, 770e, 770x */
2613 TPACPI_VIDEO_NEW, /* all others */
2614 };
2615
2616 enum { /* video status flags, based on VIDEO_570 */
2617 TP_ACPI_VIDEO_S_LCD = 0x01, /* LCD output enabled */
2618 TP_ACPI_VIDEO_S_CRT = 0x02, /* CRT output enabled */
2619 TP_ACPI_VIDEO_S_DVI = 0x08, /* DVI output enabled */
2620 };
2621
2622 enum { /* TPACPI_VIDEO_570 constants */
2623 TP_ACPI_VIDEO_570_PHSCMD = 0x87, /* unknown magic constant :( */
2624 TP_ACPI_VIDEO_570_PHSMASK = 0x03, /* PHS bits that map to
2625 * video_status_flags */
2626 TP_ACPI_VIDEO_570_PHS2CMD = 0x8b, /* unknown magic constant :( */
2627 TP_ACPI_VIDEO_570_PHS2SET = 0x80, /* unknown magic constant :( */
2628 };
2629
2630 static enum video_access_mode video_supported;
2631 static int video_orig_autosw;
2632
2633 static int video_autosw_get(void);
2634 static int video_autosw_set(int enable);
2635
2636 IBM_HANDLE(vid, root, "\\_SB.PCI.AGP.VGA", /* 570 */
2637 "\\_SB.PCI0.AGP0.VID0", /* 600e/x, 770x */
2638 "\\_SB.PCI0.VID0", /* 770e */
2639 "\\_SB.PCI0.VID", /* A21e, G4x, R50e, X30, X40 */
2640 "\\_SB.PCI0.AGP.VID", /* all others */
2641 ); /* R30, R31 */
2642
2643 IBM_HANDLE(vid2, root, "\\_SB.PCI0.AGPB.VID"); /* G41 */
2644
2645 static int __init video_init(struct ibm_init_struct *iibm)
2646 {
2647 int ivga;
2648
2649 vdbg_printk(TPACPI_DBG_INIT, "initializing video subdriver\n");
2650
2651 IBM_ACPIHANDLE_INIT(vid);
2652 IBM_ACPIHANDLE_INIT(vid2);
2653
2654 if (vid2_handle && acpi_evalf(NULL, &ivga, "\\IVGA", "d") && ivga)
2655 /* G41, assume IVGA doesn't change */
2656 vid_handle = vid2_handle;
2657
2658 if (!vid_handle)
2659 /* video switching not supported on R30, R31 */
2660 video_supported = TPACPI_VIDEO_NONE;
2661 else if (acpi_evalf(vid_handle, &video_orig_autosw, "SWIT", "qd"))
2662 /* 570 */
2663 video_supported = TPACPI_VIDEO_570;
2664 else if (acpi_evalf(vid_handle, &video_orig_autosw, "^VADL", "qd"))
2665 /* 600e/x, 770e, 770x */
2666 video_supported = TPACPI_VIDEO_770;
2667 else
2668 /* all others */
2669 video_supported = TPACPI_VIDEO_NEW;
2670
2671 vdbg_printk(TPACPI_DBG_INIT, "video is %s, mode %d\n",
2672 str_supported(video_supported != TPACPI_VIDEO_NONE),
2673 video_supported);
2674
2675 return (video_supported != TPACPI_VIDEO_NONE)? 0 : 1;
2676 }
2677
2678 static void video_exit(void)
2679 {
2680 dbg_printk(TPACPI_DBG_EXIT,
2681 "restoring original video autoswitch mode\n");
2682 if (video_autosw_set(video_orig_autosw))
2683 printk(IBM_ERR "error while trying to restore original "
2684 "video autoswitch mode\n");
2685 }
2686
2687 static int video_outputsw_get(void)
2688 {
2689 int status = 0;
2690 int i;
2691
2692 switch (video_supported) {
2693 case TPACPI_VIDEO_570:
2694 if (!acpi_evalf(NULL, &i, "\\_SB.PHS", "dd",
2695 TP_ACPI_VIDEO_570_PHSCMD))
2696 return -EIO;
2697 status = i & TP_ACPI_VIDEO_570_PHSMASK;
2698 break;
2699 case TPACPI_VIDEO_770:
2700 if (!acpi_evalf(NULL, &i, "\\VCDL", "d"))
2701 return -EIO;
2702 if (i)
2703 status |= TP_ACPI_VIDEO_S_LCD;
2704 if (!acpi_evalf(NULL, &i, "\\VCDC", "d"))
2705 return -EIO;
2706 if (i)
2707 status |= TP_ACPI_VIDEO_S_CRT;
2708 break;
2709 case TPACPI_VIDEO_NEW:
2710 if (!acpi_evalf(NULL, NULL, "\\VUPS", "vd", 1) ||
2711 !acpi_evalf(NULL, &i, "\\VCDC", "d"))
2712 return -EIO;
2713 if (i)
2714 status |= TP_ACPI_VIDEO_S_CRT;
2715
2716 if (!acpi_evalf(NULL, NULL, "\\VUPS", "vd", 0) ||
2717 !acpi_evalf(NULL, &i, "\\VCDL", "d"))
2718 return -EIO;
2719 if (i)
2720 status |= TP_ACPI_VIDEO_S_LCD;
2721 if (!acpi_evalf(NULL, &i, "\\VCDD", "d"))
2722 return -EIO;
2723 if (i)
2724 status |= TP_ACPI_VIDEO_S_DVI;
2725 break;
2726 default:
2727 return -ENOSYS;
2728 }
2729
2730 return status;
2731 }
2732
2733 static int video_outputsw_set(int status)
2734 {
2735 int autosw;
2736 int res = 0;
2737
2738 switch (video_supported) {
2739 case TPACPI_VIDEO_570:
2740 res = acpi_evalf(NULL, NULL,
2741 "\\_SB.PHS2", "vdd",
2742 TP_ACPI_VIDEO_570_PHS2CMD,
2743 status | TP_ACPI_VIDEO_570_PHS2SET);
2744 break;
2745 case TPACPI_VIDEO_770:
2746 autosw = video_autosw_get();
2747 if (autosw < 0)
2748 return autosw;
2749
2750 res = video_autosw_set(1);
2751 if (res)
2752 return res;
2753 res = acpi_evalf(vid_handle, NULL,
2754 "ASWT", "vdd", status * 0x100, 0);
2755 if (!autosw && video_autosw_set(autosw)) {
2756 printk(IBM_ERR "video auto-switch left enabled due to error\n");
2757 return -EIO;
2758 }
2759 break;
2760 case TPACPI_VIDEO_NEW:
2761 res = acpi_evalf(NULL, NULL, "\\VUPS", "vd", 0x80) &&
2762 acpi_evalf(NULL, NULL, "\\VSDS", "vdd", status, 1);
2763 break;
2764 default:
2765 return -ENOSYS;
2766 }
2767
2768 return (res)? 0 : -EIO;
2769 }
2770
2771 static int video_autosw_get(void)
2772 {
2773 int autosw = 0;
2774
2775 switch (video_supported) {
2776 case TPACPI_VIDEO_570:
2777 if (!acpi_evalf(vid_handle, &autosw, "SWIT", "d"))
2778 return -EIO;
2779 break;
2780 case TPACPI_VIDEO_770:
2781 case TPACPI_VIDEO_NEW:
2782 if (!acpi_evalf(vid_handle, &autosw, "^VDEE", "d"))
2783 return -EIO;
2784 break;
2785 default:
2786 return -ENOSYS;
2787 }
2788
2789 return autosw & 1;
2790 }
2791
2792 static int video_autosw_set(int enable)
2793 {
2794 if (!acpi_evalf(vid_handle, NULL, "_DOS", "vd", (enable)? 1 : 0))
2795 return -EIO;
2796 return 0;
2797 }
2798
2799 static int video_outputsw_cycle(void)
2800 {
2801 int autosw = video_autosw_get();
2802 int res;
2803
2804 if (autosw < 0)
2805 return autosw;
2806
2807 switch (video_supported) {
2808 case TPACPI_VIDEO_570:
2809 res = video_autosw_set(1);
2810 if (res)
2811 return res;
2812 res = acpi_evalf(ec_handle, NULL, "_Q16", "v");
2813 break;
2814 case TPACPI_VIDEO_770:
2815 case TPACPI_VIDEO_NEW:
2816 res = video_autosw_set(1);
2817 if (res)
2818 return res;
2819 res = acpi_evalf(vid_handle, NULL, "VSWT", "v");
2820 break;
2821 default:
2822 return -ENOSYS;
2823 }
2824 if (!autosw && video_autosw_set(autosw)) {
2825 printk(IBM_ERR "video auto-switch left enabled due to error\n");
2826 return -EIO;
2827 }
2828
2829 return (res)? 0 : -EIO;
2830 }
2831
2832 static int video_expand_toggle(void)
2833 {
2834 switch (video_supported) {
2835 case TPACPI_VIDEO_570:
2836 return acpi_evalf(ec_handle, NULL, "_Q17", "v")?
2837 0 : -EIO;
2838 case TPACPI_VIDEO_770:
2839 return acpi_evalf(vid_handle, NULL, "VEXP", "v")?
2840 0 : -EIO;
2841 case TPACPI_VIDEO_NEW:
2842 return acpi_evalf(NULL, NULL, "\\VEXP", "v")?
2843 0 : -EIO;
2844 default:
2845 return -ENOSYS;
2846 }
2847 /* not reached */
2848 }
2849
2850 static int video_read(char *p)
2851 {
2852 int status, autosw;
2853 int len = 0;
2854
2855 if (video_supported == TPACPI_VIDEO_NONE) {
2856 len += sprintf(p + len, "status:\t\tnot supported\n");
2857 return len;
2858 }
2859
2860 status = video_outputsw_get();
2861 if (status < 0)
2862 return status;
2863
2864 autosw = video_autosw_get();
2865 if (autosw < 0)
2866 return autosw;
2867
2868 len += sprintf(p + len, "status:\t\tsupported\n");
2869 len += sprintf(p + len, "lcd:\t\t%s\n", enabled(status, 0));
2870 len += sprintf(p + len, "crt:\t\t%s\n", enabled(status, 1));
2871 if (video_supported == TPACPI_VIDEO_NEW)
2872 len += sprintf(p + len, "dvi:\t\t%s\n", enabled(status, 3));
2873 len += sprintf(p + len, "auto:\t\t%s\n", enabled(autosw, 0));
2874 len += sprintf(p + len, "commands:\tlcd_enable, lcd_disable\n");
2875 len += sprintf(p + len, "commands:\tcrt_enable, crt_disable\n");
2876 if (video_supported == TPACPI_VIDEO_NEW)
2877 len += sprintf(p + len, "commands:\tdvi_enable, dvi_disable\n");
2878 len += sprintf(p + len, "commands:\tauto_enable, auto_disable\n");
2879 len += sprintf(p + len, "commands:\tvideo_switch, expand_toggle\n");
2880
2881 return len;
2882 }
2883
2884 static int video_write(char *buf)
2885 {
2886 char *cmd;
2887 int enable, disable, status;
2888 int res;
2889
2890 if (video_supported == TPACPI_VIDEO_NONE)
2891 return -ENODEV;
2892
2893 enable = 0;
2894 disable = 0;
2895
2896 while ((cmd = next_cmd(&buf))) {
2897 if (strlencmp(cmd, "lcd_enable") == 0) {
2898 enable |= TP_ACPI_VIDEO_S_LCD;
2899 } else if (strlencmp(cmd, "lcd_disable") == 0) {
2900 disable |= TP_ACPI_VIDEO_S_LCD;
2901 } else if (strlencmp(cmd, "crt_enable") == 0) {
2902 enable |= TP_ACPI_VIDEO_S_CRT;
2903 } else if (strlencmp(cmd, "crt_disable") == 0) {
2904 disable |= TP_ACPI_VIDEO_S_CRT;
2905 } else if (video_supported == TPACPI_VIDEO_NEW &&
2906 strlencmp(cmd, "dvi_enable") == 0) {
2907 enable |= TP_ACPI_VIDEO_S_DVI;
2908 } else if (video_supported == TPACPI_VIDEO_NEW &&
2909 strlencmp(cmd, "dvi_disable") == 0) {
2910 disable |= TP_ACPI_VIDEO_S_DVI;
2911 } else if (strlencmp(cmd, "auto_enable") == 0) {
2912 res = video_autosw_set(1);
2913 if (res)
2914 return res;
2915 } else if (strlencmp(cmd, "auto_disable") == 0) {
2916 res = video_autosw_set(0);
2917 if (res)
2918 return res;
2919 } else if (strlencmp(cmd, "video_switch") == 0) {
2920 res = video_outputsw_cycle();
2921 if (res)
2922 return res;
2923 } else if (strlencmp(cmd, "expand_toggle") == 0) {
2924 res = video_expand_toggle();
2925 if (res)
2926 return res;
2927 } else
2928 return -EINVAL;
2929 }
2930
2931 if (enable || disable) {
2932 status = video_outputsw_get();
2933 if (status < 0)
2934 return status;
2935 res = video_outputsw_set((status & ~disable) | enable);
2936 if (res)
2937 return res;
2938 }
2939
2940 return 0;
2941 }
2942
2943 static struct ibm_struct video_driver_data = {
2944 .name = "video",
2945 .read = video_read,
2946 .write = video_write,
2947 .exit = video_exit,
2948 };
2949
2950 /*************************************************************************
2951 * Light (thinklight) subdriver
2952 */
2953
2954 IBM_HANDLE(lght, root, "\\LGHT"); /* A21e, A2xm/p, T20-22, X20-21 */
2955 IBM_HANDLE(ledb, ec, "LEDB"); /* G4x */
2956
2957 static int __init light_init(struct ibm_init_struct *iibm)
2958 {
2959 vdbg_printk(TPACPI_DBG_INIT, "initializing light subdriver\n");
2960
2961 IBM_ACPIHANDLE_INIT(ledb);
2962 IBM_ACPIHANDLE_INIT(lght);
2963 IBM_ACPIHANDLE_INIT(cmos);
2964
2965 /* light not supported on 570, 600e/x, 770e, 770x, G4x, R30, R31 */
2966 tp_features.light = (cmos_handle || lght_handle) && !ledb_handle;
2967
2968 if (tp_features.light)
2969 /* light status not supported on
2970 570, 600e/x, 770e, 770x, G4x, R30, R31, R32, X20 */
2971 tp_features.light_status =
2972 acpi_evalf(ec_handle, NULL, "KBLT", "qv");
2973
2974 vdbg_printk(TPACPI_DBG_INIT, "light is %s\n",
2975 str_supported(tp_features.light));
2976
2977 return (tp_features.light)? 0 : 1;
2978 }
2979
2980 static int light_read(char *p)
2981 {
2982 int len = 0;
2983 int status = 0;
2984
2985 if (!tp_features.light) {
2986 len += sprintf(p + len, "status:\t\tnot supported\n");
2987 } else if (!tp_features.light_status) {
2988 len += sprintf(p + len, "status:\t\tunknown\n");
2989 len += sprintf(p + len, "commands:\ton, off\n");
2990 } else {
2991 if (!acpi_evalf(ec_handle, &status, "KBLT", "d"))
2992 return -EIO;
2993 len += sprintf(p + len, "status:\t\t%s\n", onoff(status, 0));
2994 len += sprintf(p + len, "commands:\ton, off\n");
2995 }
2996
2997 return len;
2998 }
2999
3000 static int light_write(char *buf)
3001 {
3002 int cmos_cmd, lght_cmd;
3003 char *cmd;
3004 int success;
3005
3006 if (!tp_features.light)
3007 return -ENODEV;
3008
3009 while ((cmd = next_cmd(&buf))) {
3010 if (strlencmp(cmd, "on") == 0) {
3011 cmos_cmd = 0x0c;
3012 lght_cmd = 1;
3013 } else if (strlencmp(cmd, "off") == 0) {
3014 cmos_cmd = 0x0d;
3015 lght_cmd = 0;
3016 } else
3017 return -EINVAL;
3018
3019 success = cmos_handle ?
3020 acpi_evalf(cmos_handle, NULL, NULL, "vd", cmos_cmd) :
3021 acpi_evalf(lght_handle, NULL, NULL, "vd", lght_cmd);
3022 if (!success)
3023 return -EIO;
3024 }
3025
3026 return 0;
3027 }
3028
3029 static struct ibm_struct light_driver_data = {
3030 .name = "light",
3031 .read = light_read,
3032 .write = light_write,
3033 };
3034
3035 /*************************************************************************
3036 * Dock subdriver
3037 */
3038
3039 #ifdef CONFIG_THINKPAD_ACPI_DOCK
3040
3041 static void dock_notify(struct ibm_struct *ibm, u32 event);
3042 static int dock_read(char *p);
3043 static int dock_write(char *buf);
3044
3045 IBM_HANDLE(dock, root, "\\_SB.GDCK", /* X30, X31, X40 */
3046 "\\_SB.PCI0.DOCK", /* 600e/x,770e,770x,A2xm/p,T20-22,X20-21 */
3047 "\\_SB.PCI0.PCI1.DOCK", /* all others */
3048 "\\_SB.PCI.ISA.SLCE", /* 570 */
3049 ); /* A21e,G4x,R30,R31,R32,R40,R40e,R50e */
3050
3051 /* don't list other alternatives as we install a notify handler on the 570 */
3052 IBM_HANDLE(pci, root, "\\_SB.PCI"); /* 570 */
3053
3054 static const struct acpi_device_id ibm_pci_device_ids[] = {
3055 {PCI_ROOT_HID_STRING, 0},
3056 {"", 0},
3057 };
3058
3059 static struct tp_acpi_drv_struct ibm_dock_acpidriver[2] = {
3060 {
3061 .notify = dock_notify,
3062 .handle = &dock_handle,
3063 .type = ACPI_SYSTEM_NOTIFY,
3064 },
3065 {
3066 /* THIS ONE MUST NEVER BE USED FOR DRIVER AUTOLOADING.
3067 * We just use it to get notifications of dock hotplug
3068 * in very old thinkpads */
3069 .hid = ibm_pci_device_ids,
3070 .notify = dock_notify,
3071 .handle = &pci_handle,
3072 .type = ACPI_SYSTEM_NOTIFY,
3073 },
3074 };
3075
3076 static struct ibm_struct dock_driver_data[2] = {
3077 {
3078 .name = "dock",
3079 .read = dock_read,
3080 .write = dock_write,
3081 .acpi = &ibm_dock_acpidriver[0],
3082 },
3083 {
3084 .name = "dock",
3085 .acpi = &ibm_dock_acpidriver[1],
3086 },
3087 };
3088
3089 #define dock_docked() (_sta(dock_handle) & 1)
3090
3091 static int __init dock_init(struct ibm_init_struct *iibm)
3092 {
3093 vdbg_printk(TPACPI_DBG_INIT, "initializing dock subdriver\n");
3094
3095 IBM_ACPIHANDLE_INIT(dock);
3096
3097 vdbg_printk(TPACPI_DBG_INIT, "dock is %s\n",
3098 str_supported(dock_handle != NULL));
3099
3100 return (dock_handle)? 0 : 1;
3101 }
3102
3103 static int __init dock_init2(struct ibm_init_struct *iibm)
3104 {
3105 int dock2_needed;
3106
3107 vdbg_printk(TPACPI_DBG_INIT, "initializing dock subdriver part 2\n");
3108
3109 if (dock_driver_data[0].flags.acpi_driver_registered &&
3110 dock_driver_data[0].flags.acpi_notify_installed) {
3111 IBM_ACPIHANDLE_INIT(pci);
3112 dock2_needed = (pci_handle != NULL);
3113 vdbg_printk(TPACPI_DBG_INIT,
3114 "dock PCI handler for the TP 570 is %s\n",
3115 str_supported(dock2_needed));
3116 } else {
3117 vdbg_printk(TPACPI_DBG_INIT,
3118 "dock subdriver part 2 not required\n");
3119 dock2_needed = 0;
3120 }
3121
3122 return (dock2_needed)? 0 : 1;
3123 }
3124
3125 static void dock_notify(struct ibm_struct *ibm, u32 event)
3126 {
3127 int docked = dock_docked();
3128 int pci = ibm->acpi->hid && ibm->acpi->device &&
3129 acpi_match_device_ids(ibm->acpi->device, ibm_pci_device_ids);
3130 int data;
3131
3132 if (event == 1 && !pci) /* 570 */
3133 data = 1; /* button */
3134 else if (event == 1 && pci) /* 570 */
3135 data = 3; /* dock */
3136 else if (event == 3 && docked)
3137 data = 1; /* button */
3138 else if (event == 3 && !docked)
3139 data = 2; /* undock */
3140 else if (event == 0 && docked)
3141 data = 3; /* dock */
3142 else {
3143 printk(IBM_ERR "unknown dock event %d, status %d\n",
3144 event, _sta(dock_handle));
3145 data = 0; /* unknown */
3146 }
3147 acpi_bus_generate_proc_event(ibm->acpi->device, event, data);
3148 acpi_bus_generate_netlink_event(ibm->acpi->device->pnp.device_class,
3149 ibm->acpi->device->dev.bus_id,
3150 event, data);
3151 }
3152
3153 static int dock_read(char *p)
3154 {
3155 int len = 0;
3156 int docked = dock_docked();
3157
3158 if (!dock_handle)
3159 len += sprintf(p + len, "status:\t\tnot supported\n");
3160 else if (!docked)
3161 len += sprintf(p + len, "status:\t\tundocked\n");
3162 else {
3163 len += sprintf(p + len, "status:\t\tdocked\n");
3164 len += sprintf(p + len, "commands:\tdock, undock\n");
3165 }
3166
3167 return len;
3168 }
3169
3170 static int dock_write(char *buf)
3171 {
3172 char *cmd;
3173
3174 if (!dock_docked())
3175 return -ENODEV;
3176
3177 while ((cmd = next_cmd(&buf))) {
3178 if (strlencmp(cmd, "undock") == 0) {
3179 if (!acpi_evalf(dock_handle, NULL, "_DCK", "vd", 0) ||
3180 !acpi_evalf(dock_handle, NULL, "_EJ0", "vd", 1))
3181 return -EIO;
3182 } else if (strlencmp(cmd, "dock") == 0) {
3183 if (!acpi_evalf(dock_handle, NULL, "_DCK", "vd", 1))
3184 return -EIO;
3185 } else
3186 return -EINVAL;
3187 }
3188
3189 return 0;
3190 }
3191
3192 #endif /* CONFIG_THINKPAD_ACPI_DOCK */
3193
3194 /*************************************************************************
3195 * Bay subdriver
3196 */
3197
3198 #ifdef CONFIG_THINKPAD_ACPI_BAY
3199
3200 IBM_HANDLE(bay, root, "\\_SB.PCI.IDE.SECN.MAST", /* 570 */
3201 "\\_SB.PCI0.IDE0.IDES.IDSM", /* 600e/x, 770e, 770x */
3202 "\\_SB.PCI0.SATA.SCND.MSTR", /* T60, X60, Z60 */
3203 "\\_SB.PCI0.IDE0.SCND.MSTR", /* all others */
3204 ); /* A21e, R30, R31 */
3205 IBM_HANDLE(bay_ej, bay, "_EJ3", /* 600e/x, A2xm/p, A3x */
3206 "_EJ0", /* all others */
3207 ); /* 570,A21e,G4x,R30,R31,R32,R40e,R50e */
3208 IBM_HANDLE(bay2, root, "\\_SB.PCI0.IDE0.PRIM.SLAV", /* A3x, R32 */
3209 "\\_SB.PCI0.IDE0.IDEP.IDPS", /* 600e/x, 770e, 770x */
3210 ); /* all others */
3211 IBM_HANDLE(bay2_ej, bay2, "_EJ3", /* 600e/x, 770e, A3x */
3212 "_EJ0", /* 770x */
3213 ); /* all others */
3214
3215 static int __init bay_init(struct ibm_init_struct *iibm)
3216 {
3217 vdbg_printk(TPACPI_DBG_INIT, "initializing bay subdriver\n");
3218
3219 IBM_ACPIHANDLE_INIT(bay);
3220 if (bay_handle)
3221 IBM_ACPIHANDLE_INIT(bay_ej);
3222 IBM_ACPIHANDLE_INIT(bay2);
3223 if (bay2_handle)
3224 IBM_ACPIHANDLE_INIT(bay2_ej);
3225
3226 tp_features.bay_status = bay_handle &&
3227 acpi_evalf(bay_handle, NULL, "_STA", "qv");
3228 tp_features.bay_status2 = bay2_handle &&
3229 acpi_evalf(bay2_handle, NULL, "_STA", "qv");
3230
3231 tp_features.bay_eject = bay_handle && bay_ej_handle &&
3232 (strlencmp(bay_ej_path, "_EJ0") == 0 || experimental);
3233 tp_features.bay_eject2 = bay2_handle && bay2_ej_handle &&
3234 (strlencmp(bay2_ej_path, "_EJ0") == 0 || experimental);
3235
3236 vdbg_printk(TPACPI_DBG_INIT,
3237 "bay 1: status %s, eject %s; bay 2: status %s, eject %s\n",
3238 str_supported(tp_features.bay_status),
3239 str_supported(tp_features.bay_eject),
3240 str_supported(tp_features.bay_status2),
3241 str_supported(tp_features.bay_eject2));
3242
3243 return (tp_features.bay_status || tp_features.bay_eject ||
3244 tp_features.bay_status2 || tp_features.bay_eject2)? 0 : 1;
3245 }
3246
3247 static void bay_notify(struct ibm_struct *ibm, u32 event)
3248 {
3249 acpi_bus_generate_proc_event(ibm->acpi->device, event, 0);
3250 acpi_bus_generate_netlink_event(ibm->acpi->device->pnp.device_class,
3251 ibm->acpi->device->dev.bus_id,
3252 event, 0);
3253 }
3254
3255 #define bay_occupied(b) (_sta(b##_handle) & 1)
3256
3257 static int bay_read(char *p)
3258 {
3259 int len = 0;
3260 int occupied = bay_occupied(bay);
3261 int occupied2 = bay_occupied(bay2);
3262 int eject, eject2;
3263
3264 len += sprintf(p + len, "status:\t\t%s\n",
3265 tp_features.bay_status ?
3266 (occupied ? "occupied" : "unoccupied") :
3267 "not supported");
3268 if (tp_features.bay_status2)
3269 len += sprintf(p + len, "status2:\t%s\n", occupied2 ?
3270 "occupied" : "unoccupied");
3271
3272 eject = tp_features.bay_eject && occupied;
3273 eject2 = tp_features.bay_eject2 && occupied2;
3274
3275 if (eject && eject2)
3276 len += sprintf(p + len, "commands:\teject, eject2\n");
3277 else if (eject)
3278 len += sprintf(p + len, "commands:\teject\n");
3279 else if (eject2)
3280 len += sprintf(p + len, "commands:\teject2\n");
3281
3282 return len;
3283 }
3284
3285 static int bay_write(char *buf)
3286 {
3287 char *cmd;
3288
3289 if (!tp_features.bay_eject && !tp_features.bay_eject2)
3290 return -ENODEV;
3291
3292 while ((cmd = next_cmd(&buf))) {
3293 if (tp_features.bay_eject && strlencmp(cmd, "eject") == 0) {
3294 if (!acpi_evalf(bay_ej_handle, NULL, NULL, "vd", 1))
3295 return -EIO;
3296 } else if (tp_features.bay_eject2 &&
3297 strlencmp(cmd, "eject2") == 0) {
3298 if (!acpi_evalf(bay2_ej_handle, NULL, NULL, "vd", 1))
3299 return -EIO;
3300 } else
3301 return -EINVAL;
3302 }
3303
3304 return 0;
3305 }
3306
3307 static struct tp_acpi_drv_struct ibm_bay_acpidriver = {
3308 .notify = bay_notify,
3309 .handle = &bay_handle,
3310 .type = ACPI_SYSTEM_NOTIFY,
3311 };
3312
3313 static struct ibm_struct bay_driver_data = {
3314 .name = "bay",
3315 .read = bay_read,
3316 .write = bay_write,
3317 .acpi = &ibm_bay_acpidriver,
3318 };
3319
3320 #endif /* CONFIG_THINKPAD_ACPI_BAY */
3321
3322 /*************************************************************************
3323 * CMOS subdriver
3324 */
3325
3326 /* sysfs cmos_command -------------------------------------------------- */
3327 static ssize_t cmos_command_store(struct device *dev,
3328 struct device_attribute *attr,
3329 const char *buf, size_t count)
3330 {
3331 unsigned long cmos_cmd;
3332 int res;
3333
3334 if (parse_strtoul(buf, 21, &cmos_cmd))
3335 return -EINVAL;
3336
3337 res = issue_thinkpad_cmos_command(cmos_cmd);
3338 return (res)? res : count;
3339 }
3340
3341 static struct device_attribute dev_attr_cmos_command =
3342 __ATTR(cmos_command, S_IWUSR, NULL, cmos_command_store);
3343
3344 /* --------------------------------------------------------------------- */
3345
3346 static int __init cmos_init(struct ibm_init_struct *iibm)
3347 {
3348 int res;
3349
3350 vdbg_printk(TPACPI_DBG_INIT,
3351 "initializing cmos commands subdriver\n");
3352
3353 IBM_ACPIHANDLE_INIT(cmos);
3354
3355 vdbg_printk(TPACPI_DBG_INIT, "cmos commands are %s\n",
3356 str_supported(cmos_handle != NULL));
3357
3358 res = device_create_file(&tpacpi_pdev->dev, &dev_attr_cmos_command);
3359 if (res)
3360 return res;
3361
3362 return (cmos_handle)? 0 : 1;
3363 }
3364
3365 static void cmos_exit(void)
3366 {
3367 device_remove_file(&tpacpi_pdev->dev, &dev_attr_cmos_command);
3368 }
3369
3370 static int cmos_read(char *p)
3371 {
3372 int len = 0;
3373
3374 /* cmos not supported on 570, 600e/x, 770e, 770x, A21e, A2xm/p,
3375 R30, R31, T20-22, X20-21 */
3376 if (!cmos_handle)
3377 len += sprintf(p + len, "status:\t\tnot supported\n");
3378 else {
3379 len += sprintf(p + len, "status:\t\tsupported\n");
3380 len += sprintf(p + len, "commands:\t<cmd> (<cmd> is 0-21)\n");
3381 }
3382
3383 return len;
3384 }
3385
3386 static int cmos_write(char *buf)
3387 {
3388 char *cmd;
3389 int cmos_cmd, res;
3390
3391 while ((cmd = next_cmd(&buf))) {
3392 if (sscanf(cmd, "%u", &cmos_cmd) == 1 &&
3393 cmos_cmd >= 0 && cmos_cmd <= 21) {
3394 /* cmos_cmd set */
3395 } else
3396 return -EINVAL;
3397
3398 res = issue_thinkpad_cmos_command(cmos_cmd);
3399 if (res)
3400 return res;
3401 }
3402
3403 return 0;
3404 }
3405
3406 static struct ibm_struct cmos_driver_data = {
3407 .name = "cmos",
3408 .read = cmos_read,
3409 .write = cmos_write,
3410 .exit = cmos_exit,
3411 };
3412
3413 /*************************************************************************
3414 * LED subdriver
3415 */
3416
3417 enum led_access_mode {
3418 TPACPI_LED_NONE = 0,
3419 TPACPI_LED_570, /* 570 */
3420 TPACPI_LED_OLD, /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20-21 */
3421 TPACPI_LED_NEW, /* all others */
3422 };
3423
3424 enum { /* For TPACPI_LED_OLD */
3425 TPACPI_LED_EC_HLCL = 0x0c, /* EC reg to get led to power on */
3426 TPACPI_LED_EC_HLBL = 0x0d, /* EC reg to blink a lit led */
3427 TPACPI_LED_EC_HLMS = 0x0e, /* EC reg to select led to command */
3428 };
3429
3430 static enum led_access_mode led_supported;
3431
3432 IBM_HANDLE(led, ec, "SLED", /* 570 */
3433 "SYSL", /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20-21 */
3434 "LED", /* all others */
3435 ); /* R30, R31 */
3436
3437 static int __init led_init(struct ibm_init_struct *iibm)
3438 {
3439 vdbg_printk(TPACPI_DBG_INIT, "initializing LED subdriver\n");
3440
3441 IBM_ACPIHANDLE_INIT(led);
3442
3443 if (!led_handle)
3444 /* led not supported on R30, R31 */
3445 led_supported = TPACPI_LED_NONE;
3446 else if (strlencmp(led_path, "SLED") == 0)
3447 /* 570 */
3448 led_supported = TPACPI_LED_570;
3449 else if (strlencmp(led_path, "SYSL") == 0)
3450 /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20-21 */
3451 led_supported = TPACPI_LED_OLD;
3452 else
3453 /* all others */
3454 led_supported = TPACPI_LED_NEW;
3455
3456 vdbg_printk(TPACPI_DBG_INIT, "LED commands are %s, mode %d\n",
3457 str_supported(led_supported), led_supported);
3458
3459 return (led_supported != TPACPI_LED_NONE)? 0 : 1;
3460 }
3461
3462 #define led_status(s) ((s) == 0 ? "off" : ((s) == 1 ? "on" : "blinking"))
3463
3464 static int led_read(char *p)
3465 {
3466 int len = 0;
3467
3468 if (!led_supported) {
3469 len += sprintf(p + len, "status:\t\tnot supported\n");
3470 return len;
3471 }
3472 len += sprintf(p + len, "status:\t\tsupported\n");
3473
3474 if (led_supported == TPACPI_LED_570) {
3475 /* 570 */
3476 int i, status;
3477 for (i = 0; i < 8; i++) {
3478 if (!acpi_evalf(ec_handle,
3479 &status, "GLED", "dd", 1 << i))
3480 return -EIO;
3481 len += sprintf(p + len, "%d:\t\t%s\n",
3482 i, led_status(status));
3483 }
3484 }
3485
3486 len += sprintf(p + len, "commands:\t"
3487 "<led> on, <led> off, <led> blink (<led> is 0-7)\n");
3488
3489 return len;
3490 }
3491
3492 /* off, on, blink */
3493 static const int led_sled_arg1[] = { 0, 1, 3 };
3494 static const int led_exp_hlbl[] = { 0, 0, 1 }; /* led# * */
3495 static const int led_exp_hlcl[] = { 0, 1, 1 }; /* led# * */
3496 static const int led_led_arg1[] = { 0, 0x80, 0xc0 };
3497
3498 static int led_write(char *buf)
3499 {
3500 char *cmd;
3501 int led, ind, ret;
3502
3503 if (!led_supported)
3504 return -ENODEV;
3505
3506 while ((cmd = next_cmd(&buf))) {
3507 if (sscanf(cmd, "%d", &led) != 1 || led < 0 || led > 7)
3508 return -EINVAL;
3509
3510 if (strstr(cmd, "off")) {
3511 ind = 0;
3512 } else if (strstr(cmd, "on")) {
3513 ind = 1;
3514 } else if (strstr(cmd, "blink")) {
3515 ind = 2;
3516 } else
3517 return -EINVAL;
3518
3519 if (led_supported == TPACPI_LED_570) {
3520 /* 570 */
3521 led = 1 << led;
3522 if (!acpi_evalf(led_handle, NULL, NULL, "vdd",
3523 led, led_sled_arg1[ind]))
3524 return -EIO;
3525 } else if (led_supported == TPACPI_LED_OLD) {
3526 /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20 */
3527 led = 1 << led;
3528 ret = ec_write(TPACPI_LED_EC_HLMS, led);
3529 if (ret >= 0)
3530 ret =
3531 ec_write(TPACPI_LED_EC_HLBL,
3532 led * led_exp_hlbl[ind]);
3533 if (ret >= 0)
3534 ret =
3535 ec_write(TPACPI_LED_EC_HLCL,
3536 led * led_exp_hlcl[ind]);
3537 if (ret < 0)
3538 return ret;
3539 } else {
3540 /* all others */
3541 if (!acpi_evalf(led_handle, NULL, NULL, "vdd",
3542 led, led_led_arg1[ind]))
3543 return -EIO;
3544 }
3545 }
3546
3547 return 0;
3548 }
3549
3550 static struct ibm_struct led_driver_data = {
3551 .name = "led",
3552 .read = led_read,
3553 .write = led_write,
3554 };
3555
3556 /*************************************************************************
3557 * Beep subdriver
3558 */
3559
3560 IBM_HANDLE(beep, ec, "BEEP"); /* all except R30, R31 */
3561
3562 static int __init beep_init(struct ibm_init_struct *iibm)
3563 {
3564 vdbg_printk(TPACPI_DBG_INIT, "initializing beep subdriver\n");
3565
3566 IBM_ACPIHANDLE_INIT(beep);
3567
3568 vdbg_printk(TPACPI_DBG_INIT, "beep is %s\n",
3569 str_supported(beep_handle != NULL));
3570
3571 return (beep_handle)? 0 : 1;
3572 }
3573
3574 static int beep_read(char *p)
3575 {
3576 int len = 0;
3577
3578 if (!beep_handle)
3579 len += sprintf(p + len, "status:\t\tnot supported\n");
3580 else {
3581 len += sprintf(p + len, "status:\t\tsupported\n");
3582 len += sprintf(p + len, "commands:\t<cmd> (<cmd> is 0-17)\n");
3583 }
3584
3585 return len;
3586 }
3587
3588 static int beep_write(char *buf)
3589 {
3590 char *cmd;
3591 int beep_cmd;
3592
3593 if (!beep_handle)
3594 return -ENODEV;
3595
3596 while ((cmd = next_cmd(&buf))) {
3597 if (sscanf(cmd, "%u", &beep_cmd) == 1 &&
3598 beep_cmd >= 0 && beep_cmd <= 17) {
3599 /* beep_cmd set */
3600 } else
3601 return -EINVAL;
3602 if (!acpi_evalf(beep_handle, NULL, NULL, "vdd", beep_cmd, 0))
3603 return -EIO;
3604 }
3605
3606 return 0;
3607 }
3608
3609 static struct ibm_struct beep_driver_data = {
3610 .name = "beep",
3611 .read = beep_read,
3612 .write = beep_write,
3613 };
3614
3615 /*************************************************************************
3616 * Thermal subdriver
3617 */
3618
3619 enum thermal_access_mode {
3620 TPACPI_THERMAL_NONE = 0, /* No thermal support */
3621 TPACPI_THERMAL_ACPI_TMP07, /* Use ACPI TMP0-7 */
3622 TPACPI_THERMAL_ACPI_UPDT, /* Use ACPI TMP0-7 with UPDT */
3623 TPACPI_THERMAL_TPEC_8, /* Use ACPI EC regs, 8 sensors */
3624 TPACPI_THERMAL_TPEC_16, /* Use ACPI EC regs, 16 sensors */
3625 };
3626
3627 enum { /* TPACPI_THERMAL_TPEC_* */
3628 TP_EC_THERMAL_TMP0 = 0x78, /* ACPI EC regs TMP 0..7 */
3629 TP_EC_THERMAL_TMP8 = 0xC0, /* ACPI EC regs TMP 8..15 */
3630 TP_EC_THERMAL_TMP_NA = -128, /* ACPI EC sensor not available */
3631 };
3632
3633 #define TPACPI_MAX_THERMAL_SENSORS 16 /* Max thermal sensors supported */
3634 struct ibm_thermal_sensors_struct {
3635 s32 temp[TPACPI_MAX_THERMAL_SENSORS];
3636 };
3637
3638 static enum thermal_access_mode thermal_read_mode;
3639
3640 static int thermal_get_sensor(int idx, s32 *value);
3641 static int thermal_get_sensors(struct ibm_thermal_sensors_struct *s);
3642
3643 /* sysfs temp##_input -------------------------------------------------- */
3644
3645 static ssize_t thermal_temp_input_show(struct device *dev,
3646 struct device_attribute *attr,
3647 char *buf)
3648 {
3649 struct sensor_device_attribute *sensor_attr =
3650 to_sensor_dev_attr(attr);
3651 int idx = sensor_attr->index;
3652 s32 value;
3653 int res;
3654
3655 res = thermal_get_sensor(idx, &value);
3656 if (res)
3657 return res;
3658 if (value == TP_EC_THERMAL_TMP_NA * 1000)
3659 return -ENXIO;
3660
3661 return snprintf(buf, PAGE_SIZE, "%d\n", value);
3662 }
3663
3664 #define THERMAL_SENSOR_ATTR_TEMP(_idxA, _idxB) \
3665 SENSOR_ATTR(temp##_idxA##_input, S_IRUGO, thermal_temp_input_show, NULL, _idxB)
3666
3667 static struct sensor_device_attribute sensor_dev_attr_thermal_temp_input[] = {
3668 THERMAL_SENSOR_ATTR_TEMP(1, 0),
3669 THERMAL_SENSOR_ATTR_TEMP(2, 1),
3670 THERMAL_SENSOR_ATTR_TEMP(3, 2),
3671 THERMAL_SENSOR_ATTR_TEMP(4, 3),
3672 THERMAL_SENSOR_ATTR_TEMP(5, 4),
3673 THERMAL_SENSOR_ATTR_TEMP(6, 5),
3674 THERMAL_SENSOR_ATTR_TEMP(7, 6),
3675 THERMAL_SENSOR_ATTR_TEMP(8, 7),
3676 THERMAL_SENSOR_ATTR_TEMP(9, 8),
3677 THERMAL_SENSOR_ATTR_TEMP(10, 9),
3678 THERMAL_SENSOR_ATTR_TEMP(11, 10),
3679 THERMAL_SENSOR_ATTR_TEMP(12, 11),
3680 THERMAL_SENSOR_ATTR_TEMP(13, 12),
3681 THERMAL_SENSOR_ATTR_TEMP(14, 13),
3682 THERMAL_SENSOR_ATTR_TEMP(15, 14),
3683 THERMAL_SENSOR_ATTR_TEMP(16, 15),
3684 };
3685
3686 #define THERMAL_ATTRS(X) \
3687 &sensor_dev_attr_thermal_temp_input[X].dev_attr.attr
3688
3689 static struct attribute *thermal_temp_input_attr[] = {
3690 THERMAL_ATTRS(8),
3691 THERMAL_ATTRS(9),
3692 THERMAL_ATTRS(10),
3693 THERMAL_ATTRS(11),
3694 THERMAL_ATTRS(12),
3695 THERMAL_ATTRS(13),
3696 THERMAL_ATTRS(14),
3697 THERMAL_ATTRS(15),
3698 THERMAL_ATTRS(0),
3699 THERMAL_ATTRS(1),
3700 THERMAL_ATTRS(2),
3701 THERMAL_ATTRS(3),
3702 THERMAL_ATTRS(4),
3703 THERMAL_ATTRS(5),
3704 THERMAL_ATTRS(6),
3705 THERMAL_ATTRS(7),
3706 NULL
3707 };
3708
3709 static const struct attribute_group thermal_temp_input16_group = {
3710 .attrs = thermal_temp_input_attr
3711 };
3712
3713 static const struct attribute_group thermal_temp_input8_group = {
3714 .attrs = &thermal_temp_input_attr[8]
3715 };
3716
3717 #undef THERMAL_SENSOR_ATTR_TEMP
3718 #undef THERMAL_ATTRS
3719
3720 /* --------------------------------------------------------------------- */
3721
3722 static int __init thermal_init(struct ibm_init_struct *iibm)
3723 {
3724 u8 t, ta1, ta2;
3725 int i;
3726 int acpi_tmp7;
3727 int res;
3728
3729 vdbg_printk(TPACPI_DBG_INIT, "initializing thermal subdriver\n");
3730
3731 acpi_tmp7 = acpi_evalf(ec_handle, NULL, "TMP7", "qv");
3732
3733 if (thinkpad_id.ec_model) {
3734 /*
3735 * Direct EC access mode: sensors at registers
3736 * 0x78-0x7F, 0xC0-0xC7. Registers return 0x00 for
3737 * non-implemented, thermal sensors return 0x80 when
3738 * not available
3739 */
3740
3741 ta1 = ta2 = 0;
3742 for (i = 0; i < 8; i++) {
3743 if (acpi_ec_read(TP_EC_THERMAL_TMP0 + i, &t)) {
3744 ta1 |= t;
3745 } else {
3746 ta1 = 0;
3747 break;
3748 }
3749 if (acpi_ec_read(TP_EC_THERMAL_TMP8 + i, &t)) {
3750 ta2 |= t;
3751 } else {
3752 ta1 = 0;
3753 break;
3754 }
3755 }
3756 if (ta1 == 0) {
3757 /* This is sheer paranoia, but we handle it anyway */
3758 if (acpi_tmp7) {
3759 printk(IBM_ERR
3760 "ThinkPad ACPI EC access misbehaving, "
3761 "falling back to ACPI TMPx access mode\n");
3762 thermal_read_mode = TPACPI_THERMAL_ACPI_TMP07;
3763 } else {
3764 printk(IBM_ERR
3765 "ThinkPad ACPI EC access misbehaving, "
3766 "disabling thermal sensors access\n");
3767 thermal_read_mode = TPACPI_THERMAL_NONE;
3768 }
3769 } else {
3770 thermal_read_mode =
3771 (ta2 != 0) ?
3772 TPACPI_THERMAL_TPEC_16 : TPACPI_THERMAL_TPEC_8;
3773 }
3774 } else if (acpi_tmp7) {
3775 if (acpi_evalf(ec_handle, NULL, "UPDT", "qv")) {
3776 /* 600e/x, 770e, 770x */
3777 thermal_read_mode = TPACPI_THERMAL_ACPI_UPDT;
3778 } else {
3779 /* Standard ACPI TMPx access, max 8 sensors */
3780 thermal_read_mode = TPACPI_THERMAL_ACPI_TMP07;
3781 }
3782 } else {
3783 /* temperatures not supported on 570, G4x, R30, R31, R32 */
3784 thermal_read_mode = TPACPI_THERMAL_NONE;
3785 }
3786
3787 vdbg_printk(TPACPI_DBG_INIT, "thermal is %s, mode %d\n",
3788 str_supported(thermal_read_mode != TPACPI_THERMAL_NONE),
3789 thermal_read_mode);
3790
3791 switch(thermal_read_mode) {
3792 case TPACPI_THERMAL_TPEC_16:
3793 res = sysfs_create_group(&tpacpi_sensors_pdev->dev.kobj,
3794 &thermal_temp_input16_group);
3795 if (res)
3796 return res;
3797 break;
3798 case TPACPI_THERMAL_TPEC_8:
3799 case TPACPI_THERMAL_ACPI_TMP07:
3800 case TPACPI_THERMAL_ACPI_UPDT:
3801 res = sysfs_create_group(&tpacpi_sensors_pdev->dev.kobj,
3802 &thermal_temp_input8_group);
3803 if (res)
3804 return res;
3805 break;
3806 case TPACPI_THERMAL_NONE:
3807 default:
3808 return 1;
3809 }
3810
3811 return 0;
3812 }
3813
3814 static void thermal_exit(void)
3815 {
3816 switch(thermal_read_mode) {
3817 case TPACPI_THERMAL_TPEC_16:
3818 sysfs_remove_group(&tpacpi_sensors_pdev->dev.kobj,
3819 &thermal_temp_input16_group);
3820 break;
3821 case TPACPI_THERMAL_TPEC_8:
3822 case TPACPI_THERMAL_ACPI_TMP07:
3823 case TPACPI_THERMAL_ACPI_UPDT:
3824 sysfs_remove_group(&tpacpi_sensors_pdev->dev.kobj,
3825 &thermal_temp_input16_group);
3826 break;
3827 case TPACPI_THERMAL_NONE:
3828 default:
3829 break;
3830 }
3831 }
3832
3833 /* idx is zero-based */
3834 static int thermal_get_sensor(int idx, s32 *value)
3835 {
3836 int t;
3837 s8 tmp;
3838 char tmpi[5];
3839
3840 t = TP_EC_THERMAL_TMP0;
3841
3842 switch (thermal_read_mode) {
3843 #if TPACPI_MAX_THERMAL_SENSORS >= 16
3844 case TPACPI_THERMAL_TPEC_16:
3845 if (idx >= 8 && idx <= 15) {
3846 t = TP_EC_THERMAL_TMP8;
3847 idx -= 8;
3848 }
3849 /* fallthrough */
3850 #endif
3851 case TPACPI_THERMAL_TPEC_8:
3852 if (idx <= 7) {
3853 if (!acpi_ec_read(t + idx, &tmp))
3854 return -EIO;
3855 *value = tmp * 1000;
3856 return 0;
3857 }
3858 break;
3859
3860 case TPACPI_THERMAL_ACPI_UPDT:
3861 if (idx <= 7) {
3862 snprintf(tmpi, sizeof(tmpi), "TMP%c", '0' + idx);
3863 if (!acpi_evalf(ec_handle, NULL, "UPDT", "v"))
3864 return -EIO;
3865 if (!acpi_evalf(ec_handle, &t, tmpi, "d"))
3866 return -EIO;
3867 *value = (t - 2732) * 100;
3868 return 0;
3869 }
3870 break;
3871
3872 case TPACPI_THERMAL_ACPI_TMP07:
3873 if (idx <= 7) {
3874 snprintf(tmpi, sizeof(tmpi), "TMP%c", '0' + idx);
3875 if (!acpi_evalf(ec_handle, &t, tmpi, "d"))
3876 return -EIO;
3877 if (t > 127 || t < -127)
3878 t = TP_EC_THERMAL_TMP_NA;
3879 *value = t * 1000;
3880 return 0;
3881 }
3882 break;
3883
3884 case TPACPI_THERMAL_NONE:
3885 default:
3886 return -ENOSYS;
3887 }
3888
3889 return -EINVAL;
3890 }
3891
3892 static int thermal_get_sensors(struct ibm_thermal_sensors_struct *s)
3893 {
3894 int res, i;
3895 int n;
3896
3897 n = 8;
3898 i = 0;
3899
3900 if (!s)
3901 return -EINVAL;
3902
3903 if (thermal_read_mode == TPACPI_THERMAL_TPEC_16)
3904 n = 16;
3905
3906 for(i = 0 ; i < n; i++) {
3907 res = thermal_get_sensor(i, &s->temp[i]);
3908 if (res)
3909 return res;
3910 }
3911
3912 return n;
3913 }
3914
3915 static int thermal_read(char *p)
3916 {
3917 int len = 0;
3918 int n, i;
3919 struct ibm_thermal_sensors_struct t;
3920
3921 n = thermal_get_sensors(&t);
3922 if (unlikely(n < 0))
3923 return n;
3924
3925 len += sprintf(p + len, "temperatures:\t");
3926
3927 if (n > 0) {
3928 for (i = 0; i < (n - 1); i++)
3929 len += sprintf(p + len, "%d ", t.temp[i] / 1000);
3930 len += sprintf(p + len, "%d\n", t.temp[i] / 1000);
3931 } else
3932 len += sprintf(p + len, "not supported\n");
3933
3934 return len;
3935 }
3936
3937 static struct ibm_struct thermal_driver_data = {
3938 .name = "thermal",
3939 .read = thermal_read,
3940 .exit = thermal_exit,
3941 };
3942
3943 /*************************************************************************
3944 * EC Dump subdriver
3945 */
3946
3947 static u8 ecdump_regs[256];
3948
3949 static int ecdump_read(char *p)
3950 {
3951 int len = 0;
3952 int i, j;
3953 u8 v;
3954
3955 len += sprintf(p + len, "EC "
3956 " +00 +01 +02 +03 +04 +05 +06 +07"
3957 " +08 +09 +0a +0b +0c +0d +0e +0f\n");
3958 for (i = 0; i < 256; i += 16) {
3959 len += sprintf(p + len, "EC 0x%02x:", i);
3960 for (j = 0; j < 16; j++) {
3961 if (!acpi_ec_read(i + j, &v))
3962 break;
3963 if (v != ecdump_regs[i + j])
3964 len += sprintf(p + len, " *%02x", v);
3965 else
3966 len += sprintf(p + len, " %02x", v);
3967 ecdump_regs[i + j] = v;
3968 }
3969 len += sprintf(p + len, "\n");
3970 if (j != 16)
3971 break;
3972 }
3973
3974 /* These are way too dangerous to advertise openly... */
3975 #if 0
3976 len += sprintf(p + len, "commands:\t0x<offset> 0x<value>"
3977 " (<offset> is 00-ff, <value> is 00-ff)\n");
3978 len += sprintf(p + len, "commands:\t0x<offset> <value> "
3979 " (<offset> is 00-ff, <value> is 0-255)\n");
3980 #endif
3981 return len;
3982 }
3983
3984 static int ecdump_write(char *buf)
3985 {
3986 char *cmd;
3987 int i, v;
3988
3989 while ((cmd = next_cmd(&buf))) {
3990 if (sscanf(cmd, "0x%x 0x%x", &i, &v) == 2) {
3991 /* i and v set */
3992 } else if (sscanf(cmd, "0x%x %u", &i, &v) == 2) {
3993 /* i and v set */
3994 } else
3995 return -EINVAL;
3996 if (i >= 0 && i < 256 && v >= 0 && v < 256) {
3997 if (!acpi_ec_write(i, v))
3998 return -EIO;
3999 } else
4000 return -EINVAL;
4001 }
4002
4003 return 0;
4004 }
4005
4006 static struct ibm_struct ecdump_driver_data = {
4007 .name = "ecdump",
4008 .read = ecdump_read,
4009 .write = ecdump_write,
4010 .flags.experimental = 1,
4011 };
4012
4013 /*************************************************************************
4014 * Backlight/brightness subdriver
4015 */
4016
4017 #define TPACPI_BACKLIGHT_DEV_NAME "thinkpad_screen"
4018
4019 static struct backlight_device *ibm_backlight_device;
4020 static int brightness_offset = 0x31;
4021 static int brightness_mode;
4022 static unsigned int brightness_enable = 2; /* 2 = auto, 0 = no, 1 = yes */
4023
4024 static int brightness_get(struct backlight_device *bd);
4025 static int brightness_set(int value);
4026 static int brightness_update_status(struct backlight_device *bd);
4027
4028 static struct backlight_ops ibm_backlight_data = {
4029 .get_brightness = brightness_get,
4030 .update_status = brightness_update_status,
4031 };
4032
4033 static struct mutex brightness_mutex;
4034
4035 static int __init tpacpi_query_bcll_levels(acpi_handle handle)
4036 {
4037 struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
4038 union acpi_object *obj;
4039 int rc;
4040
4041 if (ACPI_SUCCESS(acpi_evaluate_object(handle, NULL, NULL, &buffer))) {
4042 obj = (union acpi_object *)buffer.pointer;
4043 if (!obj || (obj->type != ACPI_TYPE_PACKAGE)) {
4044 printk(IBM_ERR "Unknown BCLL data, "
4045 "please report this to %s\n", IBM_MAIL);
4046 rc = 0;
4047 } else {
4048 rc = obj->package.count;
4049 }
4050 } else {
4051 return 0;
4052 }
4053
4054 kfree(buffer.pointer);
4055 return rc;
4056 }
4057
4058 static acpi_status __init brightness_find_bcll(acpi_handle handle, u32 lvl,
4059 void *context, void **rv)
4060 {
4061 char name[ACPI_PATH_SEGMENT_LENGTH];
4062 struct acpi_buffer buffer = { sizeof(name), &name };
4063
4064 if (ACPI_SUCCESS(acpi_get_name(handle, ACPI_SINGLE_NAME, &buffer)) &&
4065 !strncmp("BCLL", name, sizeof(name) - 1)) {
4066 if (tpacpi_query_bcll_levels(handle) == 16) {
4067 *rv = handle;
4068 return AE_CTRL_TERMINATE;
4069 } else {
4070 return AE_OK;
4071 }
4072 } else {
4073 return AE_OK;
4074 }
4075 }
4076
4077 static int __init brightness_check_levels(void)
4078 {
4079 int status;
4080 void *found_node = NULL;
4081
4082 if (!vid_handle) {
4083 IBM_ACPIHANDLE_INIT(vid);
4084 }
4085 if (!vid_handle)
4086 return 0;
4087
4088 /* Search for a BCLL package with 16 levels */
4089 status = acpi_walk_namespace(ACPI_TYPE_PACKAGE, vid_handle, 3,
4090 brightness_find_bcll, NULL, &found_node);
4091
4092 return (ACPI_SUCCESS(status) && found_node != NULL);
4093 }
4094
4095 static acpi_status __init brightness_find_bcl(acpi_handle handle, u32 lvl,
4096 void *context, void **rv)
4097 {
4098 char name[ACPI_PATH_SEGMENT_LENGTH];
4099 struct acpi_buffer buffer = { sizeof(name), &name };
4100
4101 if (ACPI_SUCCESS(acpi_get_name(handle, ACPI_SINGLE_NAME, &buffer)) &&
4102 !strncmp("_BCL", name, sizeof(name) - 1)) {
4103 *rv = handle;
4104 return AE_CTRL_TERMINATE;
4105 } else {
4106 return AE_OK;
4107 }
4108 }
4109
4110 static int __init brightness_check_std_acpi_support(void)
4111 {
4112 int status;
4113 void *found_node = NULL;
4114
4115 if (!vid_handle) {
4116 IBM_ACPIHANDLE_INIT(vid);
4117 }
4118 if (!vid_handle)
4119 return 0;
4120
4121 /* Search for a _BCL method, but don't execute it */
4122 status = acpi_walk_namespace(ACPI_TYPE_METHOD, vid_handle, 3,
4123 brightness_find_bcl, NULL, &found_node);
4124
4125 return (ACPI_SUCCESS(status) && found_node != NULL);
4126 }
4127
4128 static int __init brightness_init(struct ibm_init_struct *iibm)
4129 {
4130 int b;
4131
4132 vdbg_printk(TPACPI_DBG_INIT, "initializing brightness subdriver\n");
4133
4134 mutex_init(&brightness_mutex);
4135
4136 if (!brightness_enable) {
4137 dbg_printk(TPACPI_DBG_INIT,
4138 "brightness support disabled by module parameter\n");
4139 return 1;
4140 } else if (brightness_enable > 1) {
4141 if (brightness_check_std_acpi_support()) {
4142 printk(IBM_NOTICE
4143 "standard ACPI backlight interface available, not loading native one...\n");
4144 return 1;
4145 }
4146 }
4147
4148 if (!brightness_mode) {
4149 if (thinkpad_id.vendor == PCI_VENDOR_ID_LENOVO)
4150 brightness_mode = 2;
4151 else
4152 brightness_mode = 3;
4153
4154 dbg_printk(TPACPI_DBG_INIT, "selected brightness_mode=%d\n",
4155 brightness_mode);
4156 }
4157
4158 if (brightness_mode > 3)
4159 return -EINVAL;
4160
4161 tp_features.bright_16levels =
4162 thinkpad_id.vendor == PCI_VENDOR_ID_LENOVO &&
4163 brightness_check_levels();
4164
4165 b = brightness_get(NULL);
4166 if (b < 0)
4167 return 1;
4168
4169 if (tp_features.bright_16levels)
4170 printk(IBM_INFO "detected a 16-level brightness capable ThinkPad\n");
4171
4172 ibm_backlight_device = backlight_device_register(
4173 TPACPI_BACKLIGHT_DEV_NAME, NULL, NULL,
4174 &ibm_backlight_data);
4175 if (IS_ERR(ibm_backlight_device)) {
4176 printk(IBM_ERR "Could not register backlight device\n");
4177 return PTR_ERR(ibm_backlight_device);
4178 }
4179 vdbg_printk(TPACPI_DBG_INIT, "brightness is supported\n");
4180
4181 ibm_backlight_device->props.max_brightness =
4182 (tp_features.bright_16levels)? 15 : 7;
4183 ibm_backlight_device->props.brightness = b;
4184 backlight_update_status(ibm_backlight_device);
4185
4186 return 0;
4187 }
4188
4189 static void brightness_exit(void)
4190 {
4191 if (ibm_backlight_device) {
4192 vdbg_printk(TPACPI_DBG_EXIT,
4193 "calling backlight_device_unregister()\n");
4194 backlight_device_unregister(ibm_backlight_device);
4195 ibm_backlight_device = NULL;
4196 }
4197 }
4198
4199 static int brightness_update_status(struct backlight_device *bd)
4200 {
4201 /* it is the backlight class's job (caller) to handle
4202 * EINTR and other errors properly */
4203 return brightness_set(
4204 (bd->props.fb_blank == FB_BLANK_UNBLANK &&
4205 bd->props.power == FB_BLANK_UNBLANK) ?
4206 bd->props.brightness : 0);
4207 }
4208
4209 /*
4210 * ThinkPads can read brightness from two places: EC 0x31, or
4211 * CMOS NVRAM byte 0x5E, bits 0-3.
4212 */
4213 static int brightness_get(struct backlight_device *bd)
4214 {
4215 u8 lec = 0, lcmos = 0, level = 0;
4216
4217 if (brightness_mode & 1) {
4218 if (!acpi_ec_read(brightness_offset, &lec))
4219 return -EIO;
4220 lec &= (tp_features.bright_16levels)? 0x0f : 0x07;
4221 level = lec;
4222 };
4223 if (brightness_mode & 2) {
4224 lcmos = (nvram_read_byte(TP_NVRAM_ADDR_BRIGHTNESS)
4225 & TP_NVRAM_MASK_LEVEL_BRIGHTNESS)
4226 >> TP_NVRAM_POS_LEVEL_BRIGHTNESS;
4227 lcmos &= (tp_features.bright_16levels)? 0x0f : 0x07;
4228 level = lcmos;
4229 }
4230
4231 if (brightness_mode == 3 && lec != lcmos) {
4232 printk(IBM_ERR
4233 "CMOS NVRAM (%u) and EC (%u) do not agree "
4234 "on display brightness level\n",
4235 (unsigned int) lcmos,
4236 (unsigned int) lec);
4237 return -EIO;
4238 }
4239
4240 return level;
4241 }
4242
4243 /* May return EINTR which can always be mapped to ERESTARTSYS */
4244 static int brightness_set(int value)
4245 {
4246 int cmos_cmd, inc, i, res;
4247 int current_value;
4248
4249 if (value > ((tp_features.bright_16levels)? 15 : 7))
4250 return -EINVAL;
4251
4252 res = mutex_lock_interruptible(&brightness_mutex);
4253 if (res < 0)
4254 return res;
4255
4256 current_value = brightness_get(NULL);
4257 if (current_value < 0) {
4258 res = current_value;
4259 goto errout;
4260 }
4261
4262 cmos_cmd = value > current_value ?
4263 TP_CMOS_BRIGHTNESS_UP :
4264 TP_CMOS_BRIGHTNESS_DOWN;
4265 inc = (value > current_value)? 1 : -1;
4266
4267 res = 0;
4268 for (i = current_value; i != value; i += inc) {
4269 if ((brightness_mode & 2) &&
4270 issue_thinkpad_cmos_command(cmos_cmd)) {
4271 res = -EIO;
4272 goto errout;
4273 }
4274 if ((brightness_mode & 1) &&
4275 !acpi_ec_write(brightness_offset, i + inc)) {
4276 res = -EIO;
4277 goto errout;;
4278 }
4279 }
4280
4281 errout:
4282 mutex_unlock(&brightness_mutex);
4283 return res;
4284 }
4285
4286 static int brightness_read(char *p)
4287 {
4288 int len = 0;
4289 int level;
4290
4291 if ((level = brightness_get(NULL)) < 0) {
4292 len += sprintf(p + len, "level:\t\tunreadable\n");
4293 } else {
4294 len += sprintf(p + len, "level:\t\t%d\n", level);
4295 len += sprintf(p + len, "commands:\tup, down\n");
4296 len += sprintf(p + len, "commands:\tlevel <level>"
4297 " (<level> is 0-%d)\n",
4298 (tp_features.bright_16levels) ? 15 : 7);
4299 }
4300
4301 return len;
4302 }
4303
4304 static int brightness_write(char *buf)
4305 {
4306 int level;
4307 int rc;
4308 char *cmd;
4309 int max_level = (tp_features.bright_16levels) ? 15 : 7;
4310
4311 level = brightness_get(NULL);
4312 if (level < 0)
4313 return level;
4314
4315 while ((cmd = next_cmd(&buf))) {
4316 if (strlencmp(cmd, "up") == 0) {
4317 if (level < max_level)
4318 level++;
4319 } else if (strlencmp(cmd, "down") == 0) {
4320 if (level > 0)
4321 level--;
4322 } else if (sscanf(cmd, "level %d", &level) == 1 &&
4323 level >= 0 && level <= max_level) {
4324 /* new level set */
4325 } else
4326 return -EINVAL;
4327 }
4328
4329 /*
4330 * Now we know what the final level should be, so we try to set it.
4331 * Doing it this way makes the syscall restartable in case of EINTR
4332 */
4333 rc = brightness_set(level);
4334 return (rc == -EINTR)? ERESTARTSYS : rc;
4335 }
4336
4337 static struct ibm_struct brightness_driver_data = {
4338 .name = "brightness",
4339 .read = brightness_read,
4340 .write = brightness_write,
4341 .exit = brightness_exit,
4342 };
4343
4344 /*************************************************************************
4345 * Volume subdriver
4346 */
4347
4348 static int volume_offset = 0x30;
4349
4350 static int volume_read(char *p)
4351 {
4352 int len = 0;
4353 u8 level;
4354
4355 if (!acpi_ec_read(volume_offset, &level)) {
4356 len += sprintf(p + len, "level:\t\tunreadable\n");
4357 } else {
4358 len += sprintf(p + len, "level:\t\t%d\n", level & 0xf);
4359 len += sprintf(p + len, "mute:\t\t%s\n", onoff(level, 6));
4360 len += sprintf(p + len, "commands:\tup, down, mute\n");
4361 len += sprintf(p + len, "commands:\tlevel <level>"
4362 " (<level> is 0-15)\n");
4363 }
4364
4365 return len;
4366 }
4367
4368 static int volume_write(char *buf)
4369 {
4370 int cmos_cmd, inc, i;
4371 u8 level, mute;
4372 int new_level, new_mute;
4373 char *cmd;
4374
4375 while ((cmd = next_cmd(&buf))) {
4376 if (!acpi_ec_read(volume_offset, &level))
4377 return -EIO;
4378 new_mute = mute = level & 0x40;
4379 new_level = level = level & 0xf;
4380
4381 if (strlencmp(cmd, "up") == 0) {
4382 if (mute)
4383 new_mute = 0;
4384 else
4385 new_level = level == 15 ? 15 : level + 1;
4386 } else if (strlencmp(cmd, "down") == 0) {
4387 if (mute)
4388 new_mute = 0;
4389 else
4390 new_level = level == 0 ? 0 : level - 1;
4391 } else if (sscanf(cmd, "level %d", &new_level) == 1 &&
4392 new_level >= 0 && new_level <= 15) {
4393 /* new_level set */
4394 } else if (strlencmp(cmd, "mute") == 0) {
4395 new_mute = 0x40;
4396 } else
4397 return -EINVAL;
4398
4399 if (new_level != level) { /* mute doesn't change */
4400 cmos_cmd = new_level > level ? TP_CMOS_VOLUME_UP : TP_CMOS_VOLUME_DOWN;
4401 inc = new_level > level ? 1 : -1;
4402
4403 if (mute && (issue_thinkpad_cmos_command(cmos_cmd) ||
4404 !acpi_ec_write(volume_offset, level)))
4405 return -EIO;
4406
4407 for (i = level; i != new_level; i += inc)
4408 if (issue_thinkpad_cmos_command(cmos_cmd) ||
4409 !acpi_ec_write(volume_offset, i + inc))
4410 return -EIO;
4411
4412 if (mute && (issue_thinkpad_cmos_command(TP_CMOS_VOLUME_MUTE) ||
4413 !acpi_ec_write(volume_offset,
4414 new_level + mute)))
4415 return -EIO;
4416 }
4417
4418 if (new_mute != mute) { /* level doesn't change */
4419 cmos_cmd = new_mute ? TP_CMOS_VOLUME_MUTE : TP_CMOS_VOLUME_UP;
4420
4421 if (issue_thinkpad_cmos_command(cmos_cmd) ||
4422 !acpi_ec_write(volume_offset, level + new_mute))
4423 return -EIO;
4424 }
4425 }
4426
4427 return 0;
4428 }
4429
4430 static struct ibm_struct volume_driver_data = {
4431 .name = "volume",
4432 .read = volume_read,
4433 .write = volume_write,
4434 };
4435
4436 /*************************************************************************
4437 * Fan subdriver
4438 */
4439
4440 /*
4441 * FAN ACCESS MODES
4442 *
4443 * TPACPI_FAN_RD_ACPI_GFAN:
4444 * ACPI GFAN method: returns fan level
4445 *
4446 * see TPACPI_FAN_WR_ACPI_SFAN
4447 * EC 0x2f (HFSP) not available if GFAN exists
4448 *
4449 * TPACPI_FAN_WR_ACPI_SFAN:
4450 * ACPI SFAN method: sets fan level, 0 (stop) to 7 (max)
4451 *
4452 * EC 0x2f (HFSP) might be available *for reading*, but do not use
4453 * it for writing.
4454 *
4455 * TPACPI_FAN_WR_TPEC:
4456 * ThinkPad EC register 0x2f (HFSP): fan control loop mode
4457 * Supported on almost all ThinkPads
4458 *
4459 * Fan speed changes of any sort (including those caused by the
4460 * disengaged mode) are usually done slowly by the firmware as the
4461 * maximum ammount of fan duty cycle change per second seems to be
4462 * limited.
4463 *
4464 * Reading is not available if GFAN exists.
4465 * Writing is not available if SFAN exists.
4466 *
4467 * Bits
4468 * 7 automatic mode engaged;
4469 * (default operation mode of the ThinkPad)
4470 * fan level is ignored in this mode.
4471 * 6 full speed mode (takes precedence over bit 7);
4472 * not available on all thinkpads. May disable
4473 * the tachometer while the fan controller ramps up
4474 * the speed (which can take up to a few *minutes*).
4475 * Speeds up fan to 100% duty-cycle, which is far above
4476 * the standard RPM levels. It is not impossible that
4477 * it could cause hardware damage.
4478 * 5-3 unused in some models. Extra bits for fan level
4479 * in others, but still useless as all values above
4480 * 7 map to the same speed as level 7 in these models.
4481 * 2-0 fan level (0..7 usually)
4482 * 0x00 = stop
4483 * 0x07 = max (set when temperatures critical)
4484 * Some ThinkPads may have other levels, see
4485 * TPACPI_FAN_WR_ACPI_FANS (X31/X40/X41)
4486 *
4487 * FIRMWARE BUG: on some models, EC 0x2f might not be initialized at
4488 * boot. Apparently the EC does not intialize it, so unless ACPI DSDT
4489 * does so, its initial value is meaningless (0x07).
4490 *
4491 * For firmware bugs, refer to:
4492 * http://thinkwiki.org/wiki/Embedded_Controller_Firmware#Firmware_Issues
4493 *
4494 * ----
4495 *
4496 * ThinkPad EC register 0x84 (LSB), 0x85 (MSB):
4497 * Main fan tachometer reading (in RPM)
4498 *
4499 * This register is present on all ThinkPads with a new-style EC, and
4500 * it is known not to be present on the A21m/e, and T22, as there is
4501 * something else in offset 0x84 according to the ACPI DSDT. Other
4502 * ThinkPads from this same time period (and earlier) probably lack the
4503 * tachometer as well.
4504 *
4505 * Unfortunately a lot of ThinkPads with new-style ECs but whose firwmare
4506 * was never fixed by IBM to report the EC firmware version string
4507 * probably support the tachometer (like the early X models), so
4508 * detecting it is quite hard. We need more data to know for sure.
4509 *
4510 * FIRMWARE BUG: always read 0x84 first, otherwise incorrect readings
4511 * might result.
4512 *
4513 * FIRMWARE BUG: may go stale while the EC is switching to full speed
4514 * mode.
4515 *
4516 * For firmware bugs, refer to:
4517 * http://thinkwiki.org/wiki/Embedded_Controller_Firmware#Firmware_Issues
4518 *
4519 * TPACPI_FAN_WR_ACPI_FANS:
4520 * ThinkPad X31, X40, X41. Not available in the X60.
4521 *
4522 * FANS ACPI handle: takes three arguments: low speed, medium speed,
4523 * high speed. ACPI DSDT seems to map these three speeds to levels
4524 * as follows: STOP LOW LOW MED MED HIGH HIGH HIGH HIGH
4525 * (this map is stored on FAN0..FAN8 as "0,1,1,2,2,3,3,3,3")
4526 *
4527 * The speeds are stored on handles
4528 * (FANA:FAN9), (FANC:FANB), (FANE:FAND).
4529 *
4530 * There are three default speed sets, acessible as handles:
4531 * FS1L,FS1M,FS1H; FS2L,FS2M,FS2H; FS3L,FS3M,FS3H
4532 *
4533 * ACPI DSDT switches which set is in use depending on various
4534 * factors.
4535 *
4536 * TPACPI_FAN_WR_TPEC is also available and should be used to
4537 * command the fan. The X31/X40/X41 seems to have 8 fan levels,
4538 * but the ACPI tables just mention level 7.
4539 */
4540
4541 enum { /* Fan control constants */
4542 fan_status_offset = 0x2f, /* EC register 0x2f */
4543 fan_rpm_offset = 0x84, /* EC register 0x84: LSB, 0x85 MSB (RPM)
4544 * 0x84 must be read before 0x85 */
4545
4546 TP_EC_FAN_FULLSPEED = 0x40, /* EC fan mode: full speed */
4547 TP_EC_FAN_AUTO = 0x80, /* EC fan mode: auto fan control */
4548
4549 TPACPI_FAN_LAST_LEVEL = 0x100, /* Use cached last-seen fan level */
4550 };
4551
4552 enum fan_status_access_mode {
4553 TPACPI_FAN_NONE = 0, /* No fan status or control */
4554 TPACPI_FAN_RD_ACPI_GFAN, /* Use ACPI GFAN */
4555 TPACPI_FAN_RD_TPEC, /* Use ACPI EC regs 0x2f, 0x84-0x85 */
4556 };
4557
4558 enum fan_control_access_mode {
4559 TPACPI_FAN_WR_NONE = 0, /* No fan control */
4560 TPACPI_FAN_WR_ACPI_SFAN, /* Use ACPI SFAN */
4561 TPACPI_FAN_WR_TPEC, /* Use ACPI EC reg 0x2f */
4562 TPACPI_FAN_WR_ACPI_FANS, /* Use ACPI FANS and EC reg 0x2f */
4563 };
4564
4565 enum fan_control_commands {
4566 TPACPI_FAN_CMD_SPEED = 0x0001, /* speed command */
4567 TPACPI_FAN_CMD_LEVEL = 0x0002, /* level command */
4568 TPACPI_FAN_CMD_ENABLE = 0x0004, /* enable/disable cmd,
4569 * and also watchdog cmd */
4570 };
4571
4572 static int fan_control_allowed;
4573
4574 static enum fan_status_access_mode fan_status_access_mode;
4575 static enum fan_control_access_mode fan_control_access_mode;
4576 static enum fan_control_commands fan_control_commands;
4577
4578 static u8 fan_control_initial_status;
4579 static u8 fan_control_desired_level;
4580 static int fan_watchdog_maxinterval;
4581
4582 static struct mutex fan_mutex;
4583
4584 static int fan_get_status(u8 *status);
4585 static int fan_get_status_safe(u8 *status);
4586 static int fan_get_speed(unsigned int *speed);
4587 static void fan_update_desired_level(u8 status);
4588 static void fan_watchdog_fire(struct work_struct *ignored);
4589 static void fan_watchdog_reset(void);
4590 static int fan_set_level(int level);
4591 static int fan_set_level_safe(int level);
4592 static int fan_set_enable(void);
4593
4594 static DECLARE_DELAYED_WORK(fan_watchdog_task, fan_watchdog_fire);
4595
4596 IBM_HANDLE(fans, ec, "FANS"); /* X31, X40, X41 */
4597 IBM_HANDLE(gfan, ec, "GFAN", /* 570 */
4598 "\\FSPD", /* 600e/x, 770e, 770x */
4599 ); /* all others */
4600 IBM_HANDLE(sfan, ec, "SFAN", /* 570 */
4601 "JFNS", /* 770x-JL */
4602 ); /* all others */
4603
4604 /*
4605 * SYSFS fan layout: hwmon compatible (device)
4606 *
4607 * pwm*_enable:
4608 * 0: "disengaged" mode
4609 * 1: manual mode
4610 * 2: native EC "auto" mode (recommended, hardware default)
4611 *
4612 * pwm*: set speed in manual mode, ignored otherwise.
4613 * 0 is level 0; 255 is level 7. Intermediate points done with linear
4614 * interpolation.
4615 *
4616 * fan*_input: tachometer reading, RPM
4617 *
4618 *
4619 * SYSFS fan layout: extensions
4620 *
4621 * fan_watchdog (driver):
4622 * fan watchdog interval in seconds, 0 disables (default), max 120
4623 */
4624
4625 /* sysfs fan pwm1_enable ----------------------------------------------- */
4626 static ssize_t fan_pwm1_enable_show(struct device *dev,
4627 struct device_attribute *attr,
4628 char *buf)
4629 {
4630 int res, mode;
4631 u8 status;
4632
4633 res = fan_get_status_safe(&status);
4634 if (res)
4635 return res;
4636
4637 if (unlikely(tp_features.fan_ctrl_status_undef)) {
4638 if (status != fan_control_initial_status) {
4639 tp_features.fan_ctrl_status_undef = 0;
4640 } else {
4641 /* Return most likely status. In fact, it
4642 * might be the only possible status */
4643 status = TP_EC_FAN_AUTO;
4644 }
4645 }
4646
4647 if (status & TP_EC_FAN_FULLSPEED) {
4648 mode = 0;
4649 } else if (status & TP_EC_FAN_AUTO) {
4650 mode = 2;
4651 } else
4652 mode = 1;
4653
4654 return snprintf(buf, PAGE_SIZE, "%d\n", mode);
4655 }
4656
4657 static ssize_t fan_pwm1_enable_store(struct device *dev,
4658 struct device_attribute *attr,
4659 const char *buf, size_t count)
4660 {
4661 unsigned long t;
4662 int res, level;
4663
4664 if (parse_strtoul(buf, 2, &t))
4665 return -EINVAL;
4666
4667 switch (t) {
4668 case 0:
4669 level = TP_EC_FAN_FULLSPEED;
4670 break;
4671 case 1:
4672 level = TPACPI_FAN_LAST_LEVEL;
4673 break;
4674 case 2:
4675 level = TP_EC_FAN_AUTO;
4676 break;
4677 case 3:
4678 /* reserved for software-controlled auto mode */
4679 return -ENOSYS;
4680 default:
4681 return -EINVAL;
4682 }
4683
4684 res = fan_set_level_safe(level);
4685 if (res == -ENXIO)
4686 return -EINVAL;
4687 else if (res < 0)
4688 return res;
4689
4690 fan_watchdog_reset();
4691
4692 return count;
4693 }
4694
4695 static struct device_attribute dev_attr_fan_pwm1_enable =
4696 __ATTR(pwm1_enable, S_IWUSR | S_IRUGO,
4697 fan_pwm1_enable_show, fan_pwm1_enable_store);
4698
4699 /* sysfs fan pwm1 ------------------------------------------------------ */
4700 static ssize_t fan_pwm1_show(struct device *dev,
4701 struct device_attribute *attr,
4702 char *buf)
4703 {
4704 int res;
4705 u8 status;
4706
4707 res = fan_get_status_safe(&status);
4708 if (res)
4709 return res;
4710
4711 if (unlikely(tp_features.fan_ctrl_status_undef)) {
4712 if (status != fan_control_initial_status) {
4713 tp_features.fan_ctrl_status_undef = 0;
4714 } else {
4715 status = TP_EC_FAN_AUTO;
4716 }
4717 }
4718
4719 if ((status &
4720 (TP_EC_FAN_AUTO | TP_EC_FAN_FULLSPEED)) != 0)
4721 status = fan_control_desired_level;
4722
4723 if (status > 7)
4724 status = 7;
4725
4726 return snprintf(buf, PAGE_SIZE, "%u\n", (status * 255) / 7);
4727 }
4728
4729 static ssize_t fan_pwm1_store(struct device *dev,
4730 struct device_attribute *attr,
4731 const char *buf, size_t count)
4732 {
4733 unsigned long s;
4734 int rc;
4735 u8 status, newlevel;
4736
4737 if (parse_strtoul(buf, 255, &s))
4738 return -EINVAL;
4739
4740 /* scale down from 0-255 to 0-7 */
4741 newlevel = (s >> 5) & 0x07;
4742
4743 if (mutex_lock_interruptible(&fan_mutex))
4744 return -ERESTARTSYS;
4745
4746 rc = fan_get_status(&status);
4747 if (!rc && (status &
4748 (TP_EC_FAN_AUTO | TP_EC_FAN_FULLSPEED)) == 0) {
4749 rc = fan_set_level(newlevel);
4750 if (rc == -ENXIO)
4751 rc = -EINVAL;
4752 else if (!rc) {
4753 fan_update_desired_level(newlevel);
4754 fan_watchdog_reset();
4755 }
4756 }
4757
4758 mutex_unlock(&fan_mutex);
4759 return (rc)? rc : count;
4760 }
4761
4762 static struct device_attribute dev_attr_fan_pwm1 =
4763 __ATTR(pwm1, S_IWUSR | S_IRUGO,
4764 fan_pwm1_show, fan_pwm1_store);
4765
4766 /* sysfs fan fan1_input ------------------------------------------------ */
4767 static ssize_t fan_fan1_input_show(struct device *dev,
4768 struct device_attribute *attr,
4769 char *buf)
4770 {
4771 int res;
4772 unsigned int speed;
4773
4774 res = fan_get_speed(&speed);
4775 if (res < 0)
4776 return res;
4777
4778 return snprintf(buf, PAGE_SIZE, "%u\n", speed);
4779 }
4780
4781 static struct device_attribute dev_attr_fan_fan1_input =
4782 __ATTR(fan1_input, S_IRUGO,
4783 fan_fan1_input_show, NULL);
4784
4785 /* sysfs fan fan_watchdog (hwmon driver) ------------------------------- */
4786 static ssize_t fan_fan_watchdog_show(struct device_driver *drv,
4787 char *buf)
4788 {
4789 return snprintf(buf, PAGE_SIZE, "%u\n", fan_watchdog_maxinterval);
4790 }
4791
4792 static ssize_t fan_fan_watchdog_store(struct device_driver *drv,
4793 const char *buf, size_t count)
4794 {
4795 unsigned long t;
4796
4797 if (parse_strtoul(buf, 120, &t))
4798 return -EINVAL;
4799
4800 if (!fan_control_allowed)
4801 return -EPERM;
4802
4803 fan_watchdog_maxinterval = t;
4804 fan_watchdog_reset();
4805
4806 return count;
4807 }
4808
4809 static DRIVER_ATTR(fan_watchdog, S_IWUSR | S_IRUGO,
4810 fan_fan_watchdog_show, fan_fan_watchdog_store);
4811
4812 /* --------------------------------------------------------------------- */
4813 static struct attribute *fan_attributes[] = {
4814 &dev_attr_fan_pwm1_enable.attr, &dev_attr_fan_pwm1.attr,
4815 &dev_attr_fan_fan1_input.attr,
4816 NULL
4817 };
4818
4819 static const struct attribute_group fan_attr_group = {
4820 .attrs = fan_attributes,
4821 };
4822
4823 static int __init fan_init(struct ibm_init_struct *iibm)
4824 {
4825 int rc;
4826
4827 vdbg_printk(TPACPI_DBG_INIT, "initializing fan subdriver\n");
4828
4829 mutex_init(&fan_mutex);
4830 fan_status_access_mode = TPACPI_FAN_NONE;
4831 fan_control_access_mode = TPACPI_FAN_WR_NONE;
4832 fan_control_commands = 0;
4833 fan_watchdog_maxinterval = 0;
4834 tp_features.fan_ctrl_status_undef = 0;
4835 fan_control_desired_level = 7;
4836
4837 IBM_ACPIHANDLE_INIT(fans);
4838 IBM_ACPIHANDLE_INIT(gfan);
4839 IBM_ACPIHANDLE_INIT(sfan);
4840
4841 if (gfan_handle) {
4842 /* 570, 600e/x, 770e, 770x */
4843 fan_status_access_mode = TPACPI_FAN_RD_ACPI_GFAN;
4844 } else {
4845 /* all other ThinkPads: note that even old-style
4846 * ThinkPad ECs supports the fan control register */
4847 if (likely(acpi_ec_read(fan_status_offset,
4848 &fan_control_initial_status))) {
4849 fan_status_access_mode = TPACPI_FAN_RD_TPEC;
4850
4851 /* In some ThinkPads, neither the EC nor the ACPI
4852 * DSDT initialize the fan status, and it ends up
4853 * being set to 0x07 when it *could* be either
4854 * 0x07 or 0x80.
4855 *
4856 * Enable for TP-1Y (T43), TP-78 (R51e),
4857 * TP-76 (R52), TP-70 (T43, R52), which are known
4858 * to be buggy. */
4859 if (fan_control_initial_status == 0x07) {
4860 switch (thinkpad_id.ec_model) {
4861 case 0x5931: /* TP-1Y */
4862 case 0x3837: /* TP-78 */
4863 case 0x3637: /* TP-76 */
4864 case 0x3037: /* TP-70 */
4865 printk(IBM_NOTICE
4866 "fan_init: initial fan status is "
4867 "unknown, assuming it is in auto "
4868 "mode\n");
4869 tp_features.fan_ctrl_status_undef = 1;
4870 ;;
4871 }
4872 }
4873 } else {
4874 printk(IBM_ERR
4875 "ThinkPad ACPI EC access misbehaving, "
4876 "fan status and control unavailable\n");
4877 return 1;
4878 }
4879 }
4880
4881 if (sfan_handle) {
4882 /* 570, 770x-JL */
4883 fan_control_access_mode = TPACPI_FAN_WR_ACPI_SFAN;
4884 fan_control_commands |=
4885 TPACPI_FAN_CMD_LEVEL | TPACPI_FAN_CMD_ENABLE;
4886 } else {
4887 if (!gfan_handle) {
4888 /* gfan without sfan means no fan control */
4889 /* all other models implement TP EC 0x2f control */
4890
4891 if (fans_handle) {
4892 /* X31, X40, X41 */
4893 fan_control_access_mode =
4894 TPACPI_FAN_WR_ACPI_FANS;
4895 fan_control_commands |=
4896 TPACPI_FAN_CMD_SPEED |
4897 TPACPI_FAN_CMD_LEVEL |
4898 TPACPI_FAN_CMD_ENABLE;
4899 } else {
4900 fan_control_access_mode = TPACPI_FAN_WR_TPEC;
4901 fan_control_commands |=
4902 TPACPI_FAN_CMD_LEVEL |
4903 TPACPI_FAN_CMD_ENABLE;
4904 }
4905 }
4906 }
4907
4908 vdbg_printk(TPACPI_DBG_INIT, "fan is %s, modes %d, %d\n",
4909 str_supported(fan_status_access_mode != TPACPI_FAN_NONE ||
4910 fan_control_access_mode != TPACPI_FAN_WR_NONE),
4911 fan_status_access_mode, fan_control_access_mode);
4912
4913 /* fan control master switch */
4914 if (!fan_control_allowed) {
4915 fan_control_access_mode = TPACPI_FAN_WR_NONE;
4916 fan_control_commands = 0;
4917 dbg_printk(TPACPI_DBG_INIT,
4918 "fan control features disabled by parameter\n");
4919 }
4920
4921 /* update fan_control_desired_level */
4922 if (fan_status_access_mode != TPACPI_FAN_NONE)
4923 fan_get_status_safe(NULL);
4924
4925 if (fan_status_access_mode != TPACPI_FAN_NONE ||
4926 fan_control_access_mode != TPACPI_FAN_WR_NONE) {
4927 rc = sysfs_create_group(&tpacpi_sensors_pdev->dev.kobj,
4928 &fan_attr_group);
4929 if (!(rc < 0))
4930 rc = driver_create_file(&tpacpi_hwmon_pdriver.driver,
4931 &driver_attr_fan_watchdog);
4932 if (rc < 0)
4933 return rc;
4934 return 0;
4935 } else
4936 return 1;
4937 }
4938
4939 /*
4940 * Call with fan_mutex held
4941 */
4942 static void fan_update_desired_level(u8 status)
4943 {
4944 if ((status &
4945 (TP_EC_FAN_AUTO | TP_EC_FAN_FULLSPEED)) == 0) {
4946 if (status > 7)
4947 fan_control_desired_level = 7;
4948 else
4949 fan_control_desired_level = status;
4950 }
4951 }
4952
4953 static int fan_get_status(u8 *status)
4954 {
4955 u8 s;
4956
4957 /* TODO:
4958 * Add TPACPI_FAN_RD_ACPI_FANS ? */
4959
4960 switch (fan_status_access_mode) {
4961 case TPACPI_FAN_RD_ACPI_GFAN:
4962 /* 570, 600e/x, 770e, 770x */
4963
4964 if (unlikely(!acpi_evalf(gfan_handle, &s, NULL, "d")))
4965 return -EIO;
4966
4967 if (likely(status))
4968 *status = s & 0x07;
4969
4970 break;
4971
4972 case TPACPI_FAN_RD_TPEC:
4973 /* all except 570, 600e/x, 770e, 770x */
4974 if (unlikely(!acpi_ec_read(fan_status_offset, &s)))
4975 return -EIO;
4976
4977 if (likely(status))
4978 *status = s;
4979
4980 break;
4981
4982 default:
4983 return -ENXIO;
4984 }
4985
4986 return 0;
4987 }
4988
4989 static int fan_get_status_safe(u8 *status)
4990 {
4991 int rc;
4992 u8 s;
4993
4994 if (mutex_lock_interruptible(&fan_mutex))
4995 return -ERESTARTSYS;
4996 rc = fan_get_status(&s);
4997 if (!rc)
4998 fan_update_desired_level(s);
4999 mutex_unlock(&fan_mutex);
5000
5001 if (status)
5002 *status = s;
5003
5004 return rc;
5005 }
5006
5007 static void fan_exit(void)
5008 {
5009 vdbg_printk(TPACPI_DBG_EXIT, "cancelling any pending fan watchdog tasks\n");
5010
5011 /* FIXME: can we really do this unconditionally? */
5012 sysfs_remove_group(&tpacpi_sensors_pdev->dev.kobj, &fan_attr_group);
5013 driver_remove_file(&tpacpi_hwmon_pdriver.driver, &driver_attr_fan_watchdog);
5014
5015 cancel_delayed_work(&fan_watchdog_task);
5016 flush_scheduled_work();
5017 }
5018
5019 static int fan_get_speed(unsigned int *speed)
5020 {
5021 u8 hi, lo;
5022
5023 switch (fan_status_access_mode) {
5024 case TPACPI_FAN_RD_TPEC:
5025 /* all except 570, 600e/x, 770e, 770x */
5026 if (unlikely(!acpi_ec_read(fan_rpm_offset, &lo) ||
5027 !acpi_ec_read(fan_rpm_offset + 1, &hi)))
5028 return -EIO;
5029
5030 if (likely(speed))
5031 *speed = (hi << 8) | lo;
5032
5033 break;
5034
5035 default:
5036 return -ENXIO;
5037 }
5038
5039 return 0;
5040 }
5041
5042 static void fan_watchdog_fire(struct work_struct *ignored)
5043 {
5044 int rc;
5045
5046 if (tpacpi_lifecycle != TPACPI_LIFE_RUNNING)
5047 return;
5048
5049 printk(IBM_NOTICE "fan watchdog: enabling fan\n");
5050 rc = fan_set_enable();
5051 if (rc < 0) {
5052 printk(IBM_ERR "fan watchdog: error %d while enabling fan, "
5053 "will try again later...\n", -rc);
5054 /* reschedule for later */
5055 fan_watchdog_reset();
5056 }
5057 }
5058
5059 static void fan_watchdog_reset(void)
5060 {
5061 static int fan_watchdog_active;
5062
5063 if (fan_control_access_mode == TPACPI_FAN_WR_NONE)
5064 return;
5065
5066 if (fan_watchdog_active)
5067 cancel_delayed_work(&fan_watchdog_task);
5068
5069 if (fan_watchdog_maxinterval > 0 &&
5070 tpacpi_lifecycle != TPACPI_LIFE_EXITING) {
5071 fan_watchdog_active = 1;
5072 if (!schedule_delayed_work(&fan_watchdog_task,
5073 msecs_to_jiffies(fan_watchdog_maxinterval
5074 * 1000))) {
5075 printk(IBM_ERR "failed to schedule the fan watchdog, "
5076 "watchdog will not trigger\n");
5077 }
5078 } else
5079 fan_watchdog_active = 0;
5080 }
5081
5082 static int fan_set_level(int level)
5083 {
5084 if (!fan_control_allowed)
5085 return -EPERM;
5086
5087 switch (fan_control_access_mode) {
5088 case TPACPI_FAN_WR_ACPI_SFAN:
5089 if (level >= 0 && level <= 7) {
5090 if (!acpi_evalf(sfan_handle, NULL, NULL, "vd", level))
5091 return -EIO;
5092 } else
5093 return -EINVAL;
5094 break;
5095
5096 case TPACPI_FAN_WR_ACPI_FANS:
5097 case TPACPI_FAN_WR_TPEC:
5098 if ((level != TP_EC_FAN_AUTO) &&
5099 (level != TP_EC_FAN_FULLSPEED) &&
5100 ((level < 0) || (level > 7)))
5101 return -EINVAL;
5102
5103 /* safety net should the EC not support AUTO
5104 * or FULLSPEED mode bits and just ignore them */
5105 if (level & TP_EC_FAN_FULLSPEED)
5106 level |= 7; /* safety min speed 7 */
5107 else if (level & TP_EC_FAN_FULLSPEED)
5108 level |= 4; /* safety min speed 4 */
5109
5110 if (!acpi_ec_write(fan_status_offset, level))
5111 return -EIO;
5112 else
5113 tp_features.fan_ctrl_status_undef = 0;
5114 break;
5115
5116 default:
5117 return -ENXIO;
5118 }
5119 return 0;
5120 }
5121
5122 static int fan_set_level_safe(int level)
5123 {
5124 int rc;
5125
5126 if (!fan_control_allowed)
5127 return -EPERM;
5128
5129 if (mutex_lock_interruptible(&fan_mutex))
5130 return -ERESTARTSYS;
5131
5132 if (level == TPACPI_FAN_LAST_LEVEL)
5133 level = fan_control_desired_level;
5134
5135 rc = fan_set_level(level);
5136 if (!rc)
5137 fan_update_desired_level(level);
5138
5139 mutex_unlock(&fan_mutex);
5140 return rc;
5141 }
5142
5143 static int fan_set_enable(void)
5144 {
5145 u8 s;
5146 int rc;
5147
5148 if (!fan_control_allowed)
5149 return -EPERM;
5150
5151 if (mutex_lock_interruptible(&fan_mutex))
5152 return -ERESTARTSYS;
5153
5154 switch (fan_control_access_mode) {
5155 case TPACPI_FAN_WR_ACPI_FANS:
5156 case TPACPI_FAN_WR_TPEC:
5157 rc = fan_get_status(&s);
5158 if (rc < 0)
5159 break;
5160
5161 /* Don't go out of emergency fan mode */
5162 if (s != 7) {
5163 s &= 0x07;
5164 s |= TP_EC_FAN_AUTO | 4; /* min fan speed 4 */
5165 }
5166
5167 if (!acpi_ec_write(fan_status_offset, s))
5168 rc = -EIO;
5169 else {
5170 tp_features.fan_ctrl_status_undef = 0;
5171 rc = 0;
5172 }
5173 break;
5174
5175 case TPACPI_FAN_WR_ACPI_SFAN:
5176 rc = fan_get_status(&s);
5177 if (rc < 0)
5178 break;
5179
5180 s &= 0x07;
5181
5182 /* Set fan to at least level 4 */
5183 s |= 4;
5184
5185 if (!acpi_evalf(sfan_handle, NULL, NULL, "vd", s))
5186 rc= -EIO;
5187 else
5188 rc = 0;
5189 break;
5190
5191 default:
5192 rc = -ENXIO;
5193 }
5194
5195 mutex_unlock(&fan_mutex);
5196 return rc;
5197 }
5198
5199 static int fan_set_disable(void)
5200 {
5201 int rc;
5202
5203 if (!fan_control_allowed)
5204 return -EPERM;
5205
5206 if (mutex_lock_interruptible(&fan_mutex))
5207 return -ERESTARTSYS;
5208
5209 rc = 0;
5210 switch (fan_control_access_mode) {
5211 case TPACPI_FAN_WR_ACPI_FANS:
5212 case TPACPI_FAN_WR_TPEC:
5213 if (!acpi_ec_write(fan_status_offset, 0x00))
5214 rc = -EIO;
5215 else {
5216 fan_control_desired_level = 0;
5217 tp_features.fan_ctrl_status_undef = 0;
5218 }
5219 break;
5220
5221 case TPACPI_FAN_WR_ACPI_SFAN:
5222 if (!acpi_evalf(sfan_handle, NULL, NULL, "vd", 0x00))
5223 rc = -EIO;
5224 else
5225 fan_control_desired_level = 0;
5226 break;
5227
5228 default:
5229 rc = -ENXIO;
5230 }
5231
5232
5233 mutex_unlock(&fan_mutex);
5234 return rc;
5235 }
5236
5237 static int fan_set_speed(int speed)
5238 {
5239 int rc;
5240
5241 if (!fan_control_allowed)
5242 return -EPERM;
5243
5244 if (mutex_lock_interruptible(&fan_mutex))
5245 return -ERESTARTSYS;
5246
5247 rc = 0;
5248 switch (fan_control_access_mode) {
5249 case TPACPI_FAN_WR_ACPI_FANS:
5250 if (speed >= 0 && speed <= 65535) {
5251 if (!acpi_evalf(fans_handle, NULL, NULL, "vddd",
5252 speed, speed, speed))
5253 rc = -EIO;
5254 } else
5255 rc = -EINVAL;
5256 break;
5257
5258 default:
5259 rc = -ENXIO;
5260 }
5261
5262 mutex_unlock(&fan_mutex);
5263 return rc;
5264 }
5265
5266 static int fan_read(char *p)
5267 {
5268 int len = 0;
5269 int rc;
5270 u8 status;
5271 unsigned int speed = 0;
5272
5273 switch (fan_status_access_mode) {
5274 case TPACPI_FAN_RD_ACPI_GFAN:
5275 /* 570, 600e/x, 770e, 770x */
5276 if ((rc = fan_get_status_safe(&status)) < 0)
5277 return rc;
5278
5279 len += sprintf(p + len, "status:\t\t%s\n"
5280 "level:\t\t%d\n",
5281 (status != 0) ? "enabled" : "disabled", status);
5282 break;
5283
5284 case TPACPI_FAN_RD_TPEC:
5285 /* all except 570, 600e/x, 770e, 770x */
5286 if ((rc = fan_get_status_safe(&status)) < 0)
5287 return rc;
5288
5289 if (unlikely(tp_features.fan_ctrl_status_undef)) {
5290 if (status != fan_control_initial_status)
5291 tp_features.fan_ctrl_status_undef = 0;
5292 else
5293 /* Return most likely status. In fact, it
5294 * might be the only possible status */
5295 status = TP_EC_FAN_AUTO;
5296 }
5297
5298 len += sprintf(p + len, "status:\t\t%s\n",
5299 (status != 0) ? "enabled" : "disabled");
5300
5301 if ((rc = fan_get_speed(&speed)) < 0)
5302 return rc;
5303
5304 len += sprintf(p + len, "speed:\t\t%d\n", speed);
5305
5306 if (status & TP_EC_FAN_FULLSPEED)
5307 /* Disengaged mode takes precedence */
5308 len += sprintf(p + len, "level:\t\tdisengaged\n");
5309 else if (status & TP_EC_FAN_AUTO)
5310 len += sprintf(p + len, "level:\t\tauto\n");
5311 else
5312 len += sprintf(p + len, "level:\t\t%d\n", status);
5313 break;
5314
5315 case TPACPI_FAN_NONE:
5316 default:
5317 len += sprintf(p + len, "status:\t\tnot supported\n");
5318 }
5319
5320 if (fan_control_commands & TPACPI_FAN_CMD_LEVEL) {
5321 len += sprintf(p + len, "commands:\tlevel <level>");
5322
5323 switch (fan_control_access_mode) {
5324 case TPACPI_FAN_WR_ACPI_SFAN:
5325 len += sprintf(p + len, " (<level> is 0-7)\n");
5326 break;
5327
5328 default:
5329 len += sprintf(p + len, " (<level> is 0-7, "
5330 "auto, disengaged, full-speed)\n");
5331 break;
5332 }
5333 }
5334
5335 if (fan_control_commands & TPACPI_FAN_CMD_ENABLE)
5336 len += sprintf(p + len, "commands:\tenable, disable\n"
5337 "commands:\twatchdog <timeout> (<timeout> is 0 (off), "
5338 "1-120 (seconds))\n");
5339
5340 if (fan_control_commands & TPACPI_FAN_CMD_SPEED)
5341 len += sprintf(p + len, "commands:\tspeed <speed>"
5342 " (<speed> is 0-65535)\n");
5343
5344 return len;
5345 }
5346
5347 static int fan_write_cmd_level(const char *cmd, int *rc)
5348 {
5349 int level;
5350
5351 if (strlencmp(cmd, "level auto") == 0)
5352 level = TP_EC_FAN_AUTO;
5353 else if ((strlencmp(cmd, "level disengaged") == 0) |
5354 (strlencmp(cmd, "level full-speed") == 0))
5355 level = TP_EC_FAN_FULLSPEED;
5356 else if (sscanf(cmd, "level %d", &level) != 1)
5357 return 0;
5358
5359 if ((*rc = fan_set_level_safe(level)) == -ENXIO)
5360 printk(IBM_ERR "level command accepted for unsupported "
5361 "access mode %d", fan_control_access_mode);
5362
5363 return 1;
5364 }
5365
5366 static int fan_write_cmd_enable(const char *cmd, int *rc)
5367 {
5368 if (strlencmp(cmd, "enable") != 0)
5369 return 0;
5370
5371 if ((*rc = fan_set_enable()) == -ENXIO)
5372 printk(IBM_ERR "enable command accepted for unsupported "
5373 "access mode %d", fan_control_access_mode);
5374
5375 return 1;
5376 }
5377
5378 static int fan_write_cmd_disable(const char *cmd, int *rc)
5379 {
5380 if (strlencmp(cmd, "disable") != 0)
5381 return 0;
5382
5383 if ((*rc = fan_set_disable()) == -ENXIO)
5384 printk(IBM_ERR "disable command accepted for unsupported "
5385 "access mode %d", fan_control_access_mode);
5386
5387 return 1;
5388 }
5389
5390 static int fan_write_cmd_speed(const char *cmd, int *rc)
5391 {
5392 int speed;
5393
5394 /* TODO:
5395 * Support speed <low> <medium> <high> ? */
5396
5397 if (sscanf(cmd, "speed %d", &speed) != 1)
5398 return 0;
5399
5400 if ((*rc = fan_set_speed(speed)) == -ENXIO)
5401 printk(IBM_ERR "speed command accepted for unsupported "
5402 "access mode %d", fan_control_access_mode);
5403
5404 return 1;
5405 }
5406
5407 static int fan_write_cmd_watchdog(const char *cmd, int *rc)
5408 {
5409 int interval;
5410
5411 if (sscanf(cmd, "watchdog %d", &interval) != 1)
5412 return 0;
5413
5414 if (interval < 0 || interval > 120)
5415 *rc = -EINVAL;
5416 else
5417 fan_watchdog_maxinterval = interval;
5418
5419 return 1;
5420 }
5421
5422 static int fan_write(char *buf)
5423 {
5424 char *cmd;
5425 int rc = 0;
5426
5427 while (!rc && (cmd = next_cmd(&buf))) {
5428 if (!((fan_control_commands & TPACPI_FAN_CMD_LEVEL) &&
5429 fan_write_cmd_level(cmd, &rc)) &&
5430 !((fan_control_commands & TPACPI_FAN_CMD_ENABLE) &&
5431 (fan_write_cmd_enable(cmd, &rc) ||
5432 fan_write_cmd_disable(cmd, &rc) ||
5433 fan_write_cmd_watchdog(cmd, &rc))) &&
5434 !((fan_control_commands & TPACPI_FAN_CMD_SPEED) &&
5435 fan_write_cmd_speed(cmd, &rc))
5436 )
5437 rc = -EINVAL;
5438 else if (!rc)
5439 fan_watchdog_reset();
5440 }
5441
5442 return rc;
5443 }
5444
5445 static struct ibm_struct fan_driver_data = {
5446 .name = "fan",
5447 .read = fan_read,
5448 .write = fan_write,
5449 .exit = fan_exit,
5450 };
5451
5452 /****************************************************************************
5453 ****************************************************************************
5454 *
5455 * Infrastructure
5456 *
5457 ****************************************************************************
5458 ****************************************************************************/
5459
5460 /* sysfs name ---------------------------------------------------------- */
5461 static ssize_t thinkpad_acpi_pdev_name_show(struct device *dev,
5462 struct device_attribute *attr,
5463 char *buf)
5464 {
5465 return snprintf(buf, PAGE_SIZE, "%s\n", IBM_NAME);
5466 }
5467
5468 static struct device_attribute dev_attr_thinkpad_acpi_pdev_name =
5469 __ATTR(name, S_IRUGO, thinkpad_acpi_pdev_name_show, NULL);
5470
5471 /* --------------------------------------------------------------------- */
5472
5473 /* /proc support */
5474 static struct proc_dir_entry *proc_dir;
5475
5476
5477 /*
5478 * Module and infrastructure proble, init and exit handling
5479 */
5480
5481 #ifdef CONFIG_THINKPAD_ACPI_DEBUG
5482 static const char * __init str_supported(int is_supported)
5483 {
5484 static char text_unsupported[] __initdata = "not supported";
5485
5486 return (is_supported)? &text_unsupported[4] : &text_unsupported[0];
5487 }
5488 #endif /* CONFIG_THINKPAD_ACPI_DEBUG */
5489
5490 static void ibm_exit(struct ibm_struct *ibm);
5491
5492 static int __init ibm_init(struct ibm_init_struct *iibm)
5493 {
5494 int ret;
5495 struct ibm_struct *ibm = iibm->data;
5496 struct proc_dir_entry *entry;
5497
5498 BUG_ON(ibm == NULL);
5499
5500 INIT_LIST_HEAD(&ibm->all_drivers);
5501
5502 if (ibm->flags.experimental && !experimental)
5503 return 0;
5504
5505 dbg_printk(TPACPI_DBG_INIT,
5506 "probing for %s\n", ibm->name);
5507
5508 if (iibm->init) {
5509 ret = iibm->init(iibm);
5510 if (ret > 0)
5511 return 0; /* probe failed */
5512 if (ret)
5513 return ret;
5514
5515 ibm->flags.init_called = 1;
5516 }
5517
5518 if (ibm->acpi) {
5519 if (ibm->acpi->hid) {
5520 ret = register_tpacpi_subdriver(ibm);
5521 if (ret)
5522 goto err_out;
5523 }
5524
5525 if (ibm->acpi->notify) {
5526 ret = setup_acpi_notify(ibm);
5527 if (ret == -ENODEV) {
5528 printk(IBM_NOTICE "disabling subdriver %s\n",
5529 ibm->name);
5530 ret = 0;
5531 goto err_out;
5532 }
5533 if (ret < 0)
5534 goto err_out;
5535 }
5536 }
5537
5538 dbg_printk(TPACPI_DBG_INIT,
5539 "%s installed\n", ibm->name);
5540
5541 if (ibm->read) {
5542 entry = create_proc_entry(ibm->name,
5543 S_IFREG | S_IRUGO | S_IWUSR,
5544 proc_dir);
5545 if (!entry) {
5546 printk(IBM_ERR "unable to create proc entry %s\n",
5547 ibm->name);
5548 ret = -ENODEV;
5549 goto err_out;
5550 }
5551 entry->owner = THIS_MODULE;
5552 entry->data = ibm;
5553 entry->read_proc = &dispatch_procfs_read;
5554 if (ibm->write)
5555 entry->write_proc = &dispatch_procfs_write;
5556 ibm->flags.proc_created = 1;
5557 }
5558
5559 list_add_tail(&ibm->all_drivers, &tpacpi_all_drivers);
5560
5561 return 0;
5562
5563 err_out:
5564 dbg_printk(TPACPI_DBG_INIT,
5565 "%s: at error exit path with result %d\n",
5566 ibm->name, ret);
5567
5568 ibm_exit(ibm);
5569 return (ret < 0)? ret : 0;
5570 }
5571
5572 static void ibm_exit(struct ibm_struct *ibm)
5573 {
5574 dbg_printk(TPACPI_DBG_EXIT, "removing %s\n", ibm->name);
5575
5576 list_del_init(&ibm->all_drivers);
5577
5578 if (ibm->flags.acpi_notify_installed) {
5579 dbg_printk(TPACPI_DBG_EXIT,
5580 "%s: acpi_remove_notify_handler\n", ibm->name);
5581 BUG_ON(!ibm->acpi);
5582 acpi_remove_notify_handler(*ibm->acpi->handle,
5583 ibm->acpi->type,
5584 dispatch_acpi_notify);
5585 ibm->flags.acpi_notify_installed = 0;
5586 ibm->flags.acpi_notify_installed = 0;
5587 }
5588
5589 if (ibm->flags.proc_created) {
5590 dbg_printk(TPACPI_DBG_EXIT,
5591 "%s: remove_proc_entry\n", ibm->name);
5592 remove_proc_entry(ibm->name, proc_dir);
5593 ibm->flags.proc_created = 0;
5594 }
5595
5596 if (ibm->flags.acpi_driver_registered) {
5597 dbg_printk(TPACPI_DBG_EXIT,
5598 "%s: acpi_bus_unregister_driver\n", ibm->name);
5599 BUG_ON(!ibm->acpi);
5600 acpi_bus_unregister_driver(ibm->acpi->driver);
5601 kfree(ibm->acpi->driver);
5602 ibm->acpi->driver = NULL;
5603 ibm->flags.acpi_driver_registered = 0;
5604 }
5605
5606 if (ibm->flags.init_called && ibm->exit) {
5607 ibm->exit();
5608 ibm->flags.init_called = 0;
5609 }
5610
5611 dbg_printk(TPACPI_DBG_INIT, "finished removing %s\n", ibm->name);
5612 }
5613
5614 /* Probing */
5615
5616 static void __init get_thinkpad_model_data(struct thinkpad_id_data *tp)
5617 {
5618 const struct dmi_device *dev = NULL;
5619 char ec_fw_string[18];
5620
5621 if (!tp)
5622 return;
5623
5624 memset(tp, 0, sizeof(*tp));
5625
5626 if (dmi_name_in_vendors("IBM"))
5627 tp->vendor = PCI_VENDOR_ID_IBM;
5628 else if (dmi_name_in_vendors("LENOVO"))
5629 tp->vendor = PCI_VENDOR_ID_LENOVO;
5630 else
5631 return;
5632
5633 tp->bios_version_str = kstrdup(dmi_get_system_info(DMI_BIOS_VERSION),
5634 GFP_KERNEL);
5635 if (!tp->bios_version_str)
5636 return;
5637 tp->bios_model = tp->bios_version_str[0]
5638 | (tp->bios_version_str[1] << 8);
5639
5640 /*
5641 * ThinkPad T23 or newer, A31 or newer, R50e or newer,
5642 * X32 or newer, all Z series; Some models must have an
5643 * up-to-date BIOS or they will not be detected.
5644 *
5645 * See http://thinkwiki.org/wiki/List_of_DMI_IDs
5646 */
5647 while ((dev = dmi_find_device(DMI_DEV_TYPE_OEM_STRING, NULL, dev))) {
5648 if (sscanf(dev->name,
5649 "IBM ThinkPad Embedded Controller -[%17c",
5650 ec_fw_string) == 1) {
5651 ec_fw_string[sizeof(ec_fw_string) - 1] = 0;
5652 ec_fw_string[strcspn(ec_fw_string, " ]")] = 0;
5653
5654 tp->ec_version_str = kstrdup(ec_fw_string, GFP_KERNEL);
5655 tp->ec_model = ec_fw_string[0]
5656 | (ec_fw_string[1] << 8);
5657 break;
5658 }
5659 }
5660
5661 tp->model_str = kstrdup(dmi_get_system_info(DMI_PRODUCT_VERSION),
5662 GFP_KERNEL);
5663 if (strnicmp(tp->model_str, "ThinkPad", 8) != 0) {
5664 kfree(tp->model_str);
5665 tp->model_str = NULL;
5666 }
5667 }
5668
5669 static int __init probe_for_thinkpad(void)
5670 {
5671 int is_thinkpad;
5672
5673 if (acpi_disabled)
5674 return -ENODEV;
5675
5676 /*
5677 * Non-ancient models have better DMI tagging, but very old models
5678 * don't.
5679 */
5680 is_thinkpad = (thinkpad_id.model_str != NULL);
5681
5682 /* ec is required because many other handles are relative to it */
5683 IBM_ACPIHANDLE_INIT(ec);
5684 if (!ec_handle) {
5685 if (is_thinkpad)
5686 printk(IBM_ERR
5687 "Not yet supported ThinkPad detected!\n");
5688 return -ENODEV;
5689 }
5690
5691 /*
5692 * Risks a regression on very old machines, but reduces potential
5693 * false positives a damn great deal
5694 */
5695 if (!is_thinkpad)
5696 is_thinkpad = (thinkpad_id.vendor == PCI_VENDOR_ID_IBM);
5697
5698 if (!is_thinkpad && !force_load)
5699 return -ENODEV;
5700
5701 return 0;
5702 }
5703
5704
5705 /* Module init, exit, parameters */
5706
5707 static struct ibm_init_struct ibms_init[] __initdata = {
5708 {
5709 .init = thinkpad_acpi_driver_init,
5710 .data = &thinkpad_acpi_driver_data,
5711 },
5712 {
5713 .init = hotkey_init,
5714 .data = &hotkey_driver_data,
5715 },
5716 {
5717 .init = bluetooth_init,
5718 .data = &bluetooth_driver_data,
5719 },
5720 {
5721 .init = wan_init,
5722 .data = &wan_driver_data,
5723 },
5724 {
5725 .init = video_init,
5726 .data = &video_driver_data,
5727 },
5728 {
5729 .init = light_init,
5730 .data = &light_driver_data,
5731 },
5732 #ifdef CONFIG_THINKPAD_ACPI_DOCK
5733 {
5734 .init = dock_init,
5735 .data = &dock_driver_data[0],
5736 },
5737 {
5738 .init = dock_init2,
5739 .data = &dock_driver_data[1],
5740 },
5741 #endif
5742 #ifdef CONFIG_THINKPAD_ACPI_BAY
5743 {
5744 .init = bay_init,
5745 .data = &bay_driver_data,
5746 },
5747 #endif
5748 {
5749 .init = cmos_init,
5750 .data = &cmos_driver_data,
5751 },
5752 {
5753 .init = led_init,
5754 .data = &led_driver_data,
5755 },
5756 {
5757 .init = beep_init,
5758 .data = &beep_driver_data,
5759 },
5760 {
5761 .init = thermal_init,
5762 .data = &thermal_driver_data,
5763 },
5764 {
5765 .data = &ecdump_driver_data,
5766 },
5767 {
5768 .init = brightness_init,
5769 .data = &brightness_driver_data,
5770 },
5771 {
5772 .data = &volume_driver_data,
5773 },
5774 {
5775 .init = fan_init,
5776 .data = &fan_driver_data,
5777 },
5778 };
5779
5780 static int __init set_ibm_param(const char *val, struct kernel_param *kp)
5781 {
5782 unsigned int i;
5783 struct ibm_struct *ibm;
5784
5785 if (!kp || !kp->name || !val)
5786 return -EINVAL;
5787
5788 for (i = 0; i < ARRAY_SIZE(ibms_init); i++) {
5789 ibm = ibms_init[i].data;
5790 WARN_ON(ibm == NULL);
5791
5792 if (!ibm || !ibm->name)
5793 continue;
5794
5795 if (strcmp(ibm->name, kp->name) == 0 && ibm->write) {
5796 if (strlen(val) > sizeof(ibms_init[i].param) - 2)
5797 return -ENOSPC;
5798 strcpy(ibms_init[i].param, val);
5799 strcat(ibms_init[i].param, ",");
5800 return 0;
5801 }
5802 }
5803
5804 return -EINVAL;
5805 }
5806
5807 module_param(experimental, int, 0);
5808
5809 module_param_named(debug, dbg_level, uint, 0);
5810
5811 module_param(force_load, bool, 0);
5812
5813 module_param_named(fan_control, fan_control_allowed, bool, 0);
5814
5815 module_param_named(brightness_mode, brightness_mode, int, 0);
5816
5817 module_param(brightness_enable, uint, 0);
5818
5819 module_param(hotkey_report_mode, uint, 0);
5820
5821 #define IBM_PARAM(feature) \
5822 module_param_call(feature, set_ibm_param, NULL, NULL, 0)
5823
5824 IBM_PARAM(hotkey);
5825 IBM_PARAM(bluetooth);
5826 IBM_PARAM(video);
5827 IBM_PARAM(light);
5828 #ifdef CONFIG_THINKPAD_ACPI_DOCK
5829 IBM_PARAM(dock);
5830 #endif
5831 #ifdef CONFIG_THINKPAD_ACPI_BAY
5832 IBM_PARAM(bay);
5833 #endif /* CONFIG_THINKPAD_ACPI_BAY */
5834 IBM_PARAM(cmos);
5835 IBM_PARAM(led);
5836 IBM_PARAM(beep);
5837 IBM_PARAM(ecdump);
5838 IBM_PARAM(brightness);
5839 IBM_PARAM(volume);
5840 IBM_PARAM(fan);
5841
5842 static void thinkpad_acpi_module_exit(void);
5843
5844 static int __init thinkpad_acpi_module_init(void)
5845 {
5846 int ret, i;
5847
5848 tpacpi_lifecycle = TPACPI_LIFE_INIT;
5849
5850 /* Parameter checking */
5851 if (hotkey_report_mode > 2)
5852 return -EINVAL;
5853
5854 /* Driver-level probe */
5855
5856 get_thinkpad_model_data(&thinkpad_id);
5857 ret = probe_for_thinkpad();
5858 if (ret) {
5859 thinkpad_acpi_module_exit();
5860 return ret;
5861 }
5862
5863 /* Driver initialization */
5864
5865 IBM_ACPIHANDLE_INIT(ecrd);
5866 IBM_ACPIHANDLE_INIT(ecwr);
5867
5868 proc_dir = proc_mkdir(IBM_PROC_DIR, acpi_root_dir);
5869 if (!proc_dir) {
5870 printk(IBM_ERR "unable to create proc dir " IBM_PROC_DIR);
5871 thinkpad_acpi_module_exit();
5872 return -ENODEV;
5873 }
5874 proc_dir->owner = THIS_MODULE;
5875
5876 ret = platform_driver_register(&tpacpi_pdriver);
5877 if (ret) {
5878 printk(IBM_ERR "unable to register main platform driver\n");
5879 thinkpad_acpi_module_exit();
5880 return ret;
5881 }
5882 tp_features.platform_drv_registered = 1;
5883
5884 ret = platform_driver_register(&tpacpi_hwmon_pdriver);
5885 if (ret) {
5886 printk(IBM_ERR "unable to register hwmon platform driver\n");
5887 thinkpad_acpi_module_exit();
5888 return ret;
5889 }
5890 tp_features.sensors_pdrv_registered = 1;
5891
5892 ret = tpacpi_create_driver_attributes(&tpacpi_pdriver.driver);
5893 if (!ret) {
5894 tp_features.platform_drv_attrs_registered = 1;
5895 ret = tpacpi_create_driver_attributes(&tpacpi_hwmon_pdriver.driver);
5896 }
5897 if (ret) {
5898 printk(IBM_ERR "unable to create sysfs driver attributes\n");
5899 thinkpad_acpi_module_exit();
5900 return ret;
5901 }
5902 tp_features.sensors_pdrv_attrs_registered = 1;
5903
5904
5905 /* Device initialization */
5906 tpacpi_pdev = platform_device_register_simple(IBM_DRVR_NAME, -1,
5907 NULL, 0);
5908 if (IS_ERR(tpacpi_pdev)) {
5909 ret = PTR_ERR(tpacpi_pdev);
5910 tpacpi_pdev = NULL;
5911 printk(IBM_ERR "unable to register platform device\n");
5912 thinkpad_acpi_module_exit();
5913 return ret;
5914 }
5915 tpacpi_sensors_pdev = platform_device_register_simple(
5916 IBM_HWMON_DRVR_NAME,
5917 -1, NULL, 0);
5918 if (IS_ERR(tpacpi_sensors_pdev)) {
5919 ret = PTR_ERR(tpacpi_sensors_pdev);
5920 tpacpi_sensors_pdev = NULL;
5921 printk(IBM_ERR "unable to register hwmon platform device\n");
5922 thinkpad_acpi_module_exit();
5923 return ret;
5924 }
5925 ret = device_create_file(&tpacpi_sensors_pdev->dev,
5926 &dev_attr_thinkpad_acpi_pdev_name);
5927 if (ret) {
5928 printk(IBM_ERR
5929 "unable to create sysfs hwmon device attributes\n");
5930 thinkpad_acpi_module_exit();
5931 return ret;
5932 }
5933 tp_features.sensors_pdev_attrs_registered = 1;
5934 tpacpi_hwmon = hwmon_device_register(&tpacpi_sensors_pdev->dev);
5935 if (IS_ERR(tpacpi_hwmon)) {
5936 ret = PTR_ERR(tpacpi_hwmon);
5937 tpacpi_hwmon = NULL;
5938 printk(IBM_ERR "unable to register hwmon device\n");
5939 thinkpad_acpi_module_exit();
5940 return ret;
5941 }
5942 mutex_init(&tpacpi_inputdev_send_mutex);
5943 tpacpi_inputdev = input_allocate_device();
5944 if (!tpacpi_inputdev) {
5945 printk(IBM_ERR "unable to allocate input device\n");
5946 thinkpad_acpi_module_exit();
5947 return -ENOMEM;
5948 } else {
5949 /* Prepare input device, but don't register */
5950 tpacpi_inputdev->name = "ThinkPad Extra Buttons";
5951 tpacpi_inputdev->phys = IBM_DRVR_NAME "/input0";
5952 tpacpi_inputdev->id.bustype = BUS_HOST;
5953 tpacpi_inputdev->id.vendor = (thinkpad_id.vendor) ?
5954 thinkpad_id.vendor :
5955 PCI_VENDOR_ID_IBM;
5956 tpacpi_inputdev->id.product = TPACPI_HKEY_INPUT_PRODUCT;
5957 tpacpi_inputdev->id.version = TPACPI_HKEY_INPUT_VERSION;
5958 }
5959 for (i = 0; i < ARRAY_SIZE(ibms_init); i++) {
5960 ret = ibm_init(&ibms_init[i]);
5961 if (ret >= 0 && *ibms_init[i].param)
5962 ret = ibms_init[i].data->write(ibms_init[i].param);
5963 if (ret < 0) {
5964 thinkpad_acpi_module_exit();
5965 return ret;
5966 }
5967 }
5968 ret = input_register_device(tpacpi_inputdev);
5969 if (ret < 0) {
5970 printk(IBM_ERR "unable to register input device\n");
5971 thinkpad_acpi_module_exit();
5972 return ret;
5973 } else {
5974 tp_features.input_device_registered = 1;
5975 }
5976
5977 tpacpi_lifecycle = TPACPI_LIFE_RUNNING;
5978 return 0;
5979 }
5980
5981 static void thinkpad_acpi_module_exit(void)
5982 {
5983 struct ibm_struct *ibm, *itmp;
5984
5985 tpacpi_lifecycle = TPACPI_LIFE_EXITING;
5986
5987 list_for_each_entry_safe_reverse(ibm, itmp,
5988 &tpacpi_all_drivers,
5989 all_drivers) {
5990 ibm_exit(ibm);
5991 }
5992
5993 dbg_printk(TPACPI_DBG_INIT, "finished subdriver exit path...\n");
5994
5995 if (tpacpi_inputdev) {
5996 if (tp_features.input_device_registered)
5997 input_unregister_device(tpacpi_inputdev);
5998 else
5999 input_free_device(tpacpi_inputdev);
6000 }
6001
6002 if (tpacpi_hwmon)
6003 hwmon_device_unregister(tpacpi_hwmon);
6004
6005 if (tp_features.sensors_pdev_attrs_registered)
6006 device_remove_file(&tpacpi_sensors_pdev->dev,
6007 &dev_attr_thinkpad_acpi_pdev_name);
6008 if (tpacpi_sensors_pdev)
6009 platform_device_unregister(tpacpi_sensors_pdev);
6010 if (tpacpi_pdev)
6011 platform_device_unregister(tpacpi_pdev);
6012
6013 if (tp_features.sensors_pdrv_attrs_registered)
6014 tpacpi_remove_driver_attributes(&tpacpi_hwmon_pdriver.driver);
6015 if (tp_features.platform_drv_attrs_registered)
6016 tpacpi_remove_driver_attributes(&tpacpi_pdriver.driver);
6017
6018 if (tp_features.sensors_pdrv_registered)
6019 platform_driver_unregister(&tpacpi_hwmon_pdriver);
6020
6021 if (tp_features.platform_drv_registered)
6022 platform_driver_unregister(&tpacpi_pdriver);
6023
6024 if (proc_dir)
6025 remove_proc_entry(IBM_PROC_DIR, acpi_root_dir);
6026
6027 kfree(thinkpad_id.bios_version_str);
6028 kfree(thinkpad_id.ec_version_str);
6029 kfree(thinkpad_id.model_str);
6030 }
6031
6032 module_init(thinkpad_acpi_module_init);
6033 module_exit(thinkpad_acpi_module_exit);
Linux 2.6 ibm-acpi/thinkpad-acpi driver git tree