1 /*
2 * thinkpad_acpi.c - ThinkPad ACPI Extras
3 *
4 *
5 * Copyright (C) 2004-2005 Borislav Deianov <borislav@users.sf.net>
6 * Copyright (C) 2006-2008 Henrique de Moraes Holschuh <hmh@hmh.eng.br>
7 *
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
12 *
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
17 *
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
21 * 02110-1301, USA.
22 */
23
24 #define TPACPI_VERSION "0.19"
25 #define TPACPI_SYSFS_VERSION 0x020200
26
27 /*
28 * Changelog:
29 * 2007-10-20 changelog trimmed down
30 *
31 * 2007-03-27 0.14 renamed to thinkpad_acpi and moved to
32 * drivers/misc.
33 *
34 * 2006-11-22 0.13 new maintainer
35 * changelog now lives in git commit history, and will
36 * not be updated further in-file.
37 *
38 * 2005-03-17 0.11 support for 600e, 770x
39 * thanks to Jamie Lentin <lentinj@dial.pipex.com>
40 *
41 * 2005-01-16 0.9 use MODULE_VERSION
42 * thanks to Henrik Brix Andersen <brix@gentoo.org>
43 * fix parameter passing on module loading
44 * thanks to Rusty Russell <rusty@rustcorp.com.au>
45 * thanks to Jim Radford <radford@blackbean.org>
46 * 2004-11-08 0.8 fix init error case, don't return from a macro
47 * thanks to Chris Wright <chrisw@osdl.org>
48 */
49
50 #include <linux/kernel.h>
51 #include <linux/module.h>
52 #include <linux/init.h>
53 #include <linux/types.h>
54 #include <linux/string.h>
55 #include <linux/list.h>
56 #include <linux/mutex.h>
57 #include <linux/kthread.h>
58 #include <linux/freezer.h>
59 #include <linux/delay.h>
60
61 #include <linux/nvram.h>
62 #include <linux/proc_fs.h>
63 #include <linux/sysfs.h>
64 #include <linux/backlight.h>
65 #include <linux/fb.h>
66 #include <linux/platform_device.h>
67 #include <linux/hwmon.h>
68 #include <linux/hwmon-sysfs.h>
69 #include <linux/input.h>
70 #include <asm/uaccess.h>
71
72 #include <linux/dmi.h>
73 #include <linux/jiffies.h>
74 #include <linux/workqueue.h>
75
76 #include <acpi/acpi_drivers.h>
77 #include <acpi/acnamesp.h>
78
79 #include <linux/pci_ids.h>
80
81
82 /* ThinkPad CMOS commands */
83 #define TP_CMOS_VOLUME_DOWN 0
84 #define TP_CMOS_VOLUME_UP 1
85 #define TP_CMOS_VOLUME_MUTE 2
86 #define TP_CMOS_BRIGHTNESS_UP 4
87 #define TP_CMOS_BRIGHTNESS_DOWN 5
88
89 /* NVRAM Addresses */
90 enum tp_nvram_addr {
91 TP_NVRAM_ADDR_HK2 = 0x57,
92 TP_NVRAM_ADDR_THINKLIGHT = 0x58,
93 TP_NVRAM_ADDR_VIDEO = 0x59,
94 TP_NVRAM_ADDR_BRIGHTNESS = 0x5e,
95 TP_NVRAM_ADDR_MIXER = 0x60,
96 };
97
98 /* NVRAM bit masks */
99 enum {
100 TP_NVRAM_MASK_HKT_THINKPAD = 0x08,
101 TP_NVRAM_MASK_HKT_ZOOM = 0x20,
102 TP_NVRAM_MASK_HKT_DISPLAY = 0x40,
103 TP_NVRAM_MASK_HKT_HIBERNATE = 0x80,
104 TP_NVRAM_MASK_THINKLIGHT = 0x10,
105 TP_NVRAM_MASK_HKT_DISPEXPND = 0x30,
106 TP_NVRAM_MASK_HKT_BRIGHTNESS = 0x20,
107 TP_NVRAM_MASK_LEVEL_BRIGHTNESS = 0x0f,
108 TP_NVRAM_POS_LEVEL_BRIGHTNESS = 0,
109 TP_NVRAM_MASK_MUTE = 0x40,
110 TP_NVRAM_MASK_HKT_VOLUME = 0x80,
111 TP_NVRAM_MASK_LEVEL_VOLUME = 0x0f,
112 TP_NVRAM_POS_LEVEL_VOLUME = 0,
113 };
114
115 /* ACPI HIDs */
116 #define TPACPI_ACPI_HKEY_HID "IBM0068"
117
118 /* Input IDs */
119 #define TPACPI_HKEY_INPUT_PRODUCT 0x5054 /* "TP" */
120 #define TPACPI_HKEY_INPUT_VERSION 0x4101
121
122
123 /****************************************************************************
124 * Main driver
125 */
126
127 #define TPACPI_NAME "thinkpad"
128 #define TPACPI_DESC "ThinkPad ACPI Extras"
129 #define TPACPI_FILE TPACPI_NAME "_acpi"
130 #define TPACPI_URL "http://ibm-acpi.sf.net/"
131 #define TPACPI_MAIL "ibm-acpi-devel@lists.sourceforge.net"
132
133 #define TPACPI_PROC_DIR "ibm"
134 #define TPACPI_ACPI_EVENT_PREFIX "ibm"
135 #define TPACPI_DRVR_NAME TPACPI_FILE
136 #define TPACPI_HWMON_DRVR_NAME TPACPI_NAME "_hwmon"
137
138 #define TPACPI_MAX_ACPI_ARGS 3
139
140 /* Debugging */
141 #define TPACPI_LOG TPACPI_FILE ": "
142 #define TPACPI_ERR KERN_ERR TPACPI_LOG
143 #define TPACPI_NOTICE KERN_NOTICE TPACPI_LOG
144 #define TPACPI_INFO KERN_INFO TPACPI_LOG
145 #define TPACPI_DEBUG KERN_DEBUG TPACPI_LOG
146
147 #define TPACPI_DBG_ALL 0xffff
148 #define TPACPI_DBG_ALL 0xffff
149 #define TPACPI_DBG_INIT 0x0001
150 #define TPACPI_DBG_EXIT 0x0002
151 #define dbg_printk(a_dbg_level, format, arg...) \
152 do { if (dbg_level & a_dbg_level) \
153 printk(TPACPI_DEBUG "%s: " format, __func__ , ## arg); \
154 } while (0)
155 #ifdef CONFIG_THINKPAD_ACPI_DEBUG
156 #define vdbg_printk(a_dbg_level, format, arg...) \
157 dbg_printk(a_dbg_level, format, ## arg)
158 static const char *str_supported(int is_supported);
159 #else
160 #define vdbg_printk(a_dbg_level, format, arg...)
161 #endif
162
163 #define onoff(status, bit) ((status) & (1 << (bit)) ? "on" : "off")
164 #define enabled(status, bit) ((status) & (1 << (bit)) ? "enabled" : "disabled")
165 #define strlencmp(a, b) (strncmp((a), (b), strlen(b)))
166
167
168 /****************************************************************************
169 * Driver-wide structs and misc. variables
170 */
171
172 struct ibm_struct;
173
174 struct tp_acpi_drv_struct {
175 const struct acpi_device_id *hid;
176 struct acpi_driver *driver;
177
178 void (*notify) (struct ibm_struct *, u32);
179 acpi_handle *handle;
180 u32 type;
181 struct acpi_device *device;
182 };
183
184 struct ibm_struct {
185 char *name;
186
187 int (*read) (char *);
188 int (*write) (char *);
189 void (*exit) (void);
190 void (*resume) (void);
191 void (*suspend) (pm_message_t state);
192
193 struct list_head all_drivers;
194
195 struct tp_acpi_drv_struct *acpi;
196
197 struct {
198 u8 acpi_driver_registered:1;
199 u8 acpi_notify_installed:1;
200 u8 proc_created:1;
201 u8 init_called:1;
202 u8 experimental:1;
203 } flags;
204 };
205
206 struct ibm_init_struct {
207 char param[32];
208
209 int (*init) (struct ibm_init_struct *);
210 struct ibm_struct *data;
211 };
212
213 static struct {
214 #ifdef CONFIG_THINKPAD_ACPI_BAY
215 u32 bay_status:1;
216 u32 bay_eject:1;
217 u32 bay_status2:1;
218 u32 bay_eject2:1;
219 #endif
220 u32 bluetooth:1;
221 u32 hotkey:1;
222 u32 hotkey_mask:1;
223 u32 hotkey_wlsw:1;
224 u32 hotkey_tablet:1;
225 u32 light:1;
226 u32 light_status:1;
227 u32 bright_16levels:1;
228 u32 wan:1;
229 u32 fan_ctrl_status_undef:1;
230 u32 input_device_registered:1;
231 u32 platform_drv_registered:1;
232 u32 platform_drv_attrs_registered:1;
233 u32 sensors_pdrv_registered:1;
234 u32 sensors_pdrv_attrs_registered:1;
235 u32 sensors_pdev_attrs_registered:1;
236 u32 hotkey_poll_active:1;
237 } tp_features;
238
239 struct thinkpad_id_data {
240 unsigned int vendor; /* ThinkPad vendor:
241 * PCI_VENDOR_ID_IBM/PCI_VENDOR_ID_LENOVO */
242
243 char *bios_version_str; /* Something like 1ZET51WW (1.03z) */
244 char *ec_version_str; /* Something like 1ZHT51WW-1.04a */
245
246 u16 bios_model; /* Big Endian, TP-1Y = 0x5931, 0 = unknown */
247 u16 ec_model;
248
249 char *model_str;
250 };
251 static struct thinkpad_id_data thinkpad_id;
252
253 static enum {
254 TPACPI_LIFE_INIT = 0,
255 TPACPI_LIFE_RUNNING,
256 TPACPI_LIFE_EXITING,
257 } tpacpi_lifecycle;
258
259 static int experimental;
260 static u32 dbg_level;
261
262 /****************************************************************************
263 ****************************************************************************
264 *
265 * ACPI Helpers and device model
266 *
267 ****************************************************************************
268 ****************************************************************************/
269
270 /*************************************************************************
271 * ACPI basic handles
272 */
273
274 static acpi_handle root_handle;
275
276 #define TPACPI_HANDLE(object, parent, paths...) \
277 static acpi_handle object##_handle; \
278 static acpi_handle *object##_parent = &parent##_handle; \
279 static char *object##_path; \
280 static char *object##_paths[] = { paths }
281
282 TPACPI_HANDLE(ec, root, "\\_SB.PCI0.ISA.EC0", /* 240, 240x */
283 "\\_SB.PCI.ISA.EC", /* 570 */
284 "\\_SB.PCI0.ISA0.EC0", /* 600e/x, 770e, 770x */
285 "\\_SB.PCI0.ISA.EC", /* A21e, A2xm/p, T20-22, X20-21 */
286 "\\_SB.PCI0.AD4S.EC0", /* i1400, R30 */
287 "\\_SB.PCI0.ICH3.EC0", /* R31 */
288 "\\_SB.PCI0.LPC.EC", /* all others */
289 );
290
291 TPACPI_HANDLE(ecrd, ec, "ECRD"); /* 570 */
292 TPACPI_HANDLE(ecwr, ec, "ECWR"); /* 570 */
293
294 TPACPI_HANDLE(cmos, root, "\\UCMS", /* R50, R50e, R50p, R51, */
295 /* T4x, X31, X40 */
296 "\\CMOS", /* A3x, G4x, R32, T23, T30, X22-24, X30 */
297 "\\CMS", /* R40, R40e */
298 ); /* all others */
299
300 TPACPI_HANDLE(hkey, ec, "\\_SB.HKEY", /* 600e/x, 770e, 770x */
301 "^HKEY", /* R30, R31 */
302 "HKEY", /* all others */
303 ); /* 570 */
304
305 TPACPI_HANDLE(vid, root, "\\_SB.PCI.AGP.VGA", /* 570 */
306 "\\_SB.PCI0.AGP0.VID0", /* 600e/x, 770x */
307 "\\_SB.PCI0.VID0", /* 770e */
308 "\\_SB.PCI0.VID", /* A21e, G4x, R50e, X30, X40 */
309 "\\_SB.PCI0.AGP.VID", /* all others */
310 ); /* R30, R31 */
311
312
313 /*************************************************************************
314 * ACPI helpers
315 */
316
317 static int acpi_evalf(acpi_handle handle,
318 void *res, char *method, char *fmt, ...)
319 {
320 char *fmt0 = fmt;
321 struct acpi_object_list params;
322 union acpi_object in_objs[TPACPI_MAX_ACPI_ARGS];
323 struct acpi_buffer result, *resultp;
324 union acpi_object out_obj;
325 acpi_status status;
326 va_list ap;
327 char res_type;
328 int success;
329 int quiet;
330
331 if (!*fmt) {
332 printk(TPACPI_ERR "acpi_evalf() called with empty format\n");
333 return 0;
334 }
335
336 if (*fmt == 'q') {
337 quiet = 1;
338 fmt++;
339 } else
340 quiet = 0;
341
342 res_type = *(fmt++);
343
344 params.count = 0;
345 params.pointer = &in_objs[0];
346
347 va_start(ap, fmt);
348 while (*fmt) {
349 char c = *(fmt++);
350 switch (c) {
351 case 'd': /* int */
352 in_objs[params.count].integer.value = va_arg(ap, int);
353 in_objs[params.count++].type = ACPI_TYPE_INTEGER;
354 break;
355 /* add more types as needed */
356 default:
357 printk(TPACPI_ERR "acpi_evalf() called "
358 "with invalid format character '%c'\n", c);
359 return 0;
360 }
361 }
362 va_end(ap);
363
364 if (res_type != 'v') {
365 result.length = sizeof(out_obj);
366 result.pointer = &out_obj;
367 resultp = &result;
368 } else
369 resultp = NULL;
370
371 status = acpi_evaluate_object(handle, method, ¶ms, resultp);
372
373 switch (res_type) {
374 case 'd': /* int */
375 if (res)
376 *(int *)res = out_obj.integer.value;
377 success = status == AE_OK && out_obj.type == ACPI_TYPE_INTEGER;
378 break;
379 case 'v': /* void */
380 success = status == AE_OK;
381 break;
382 /* add more types as needed */
383 default:
384 printk(TPACPI_ERR "acpi_evalf() called "
385 "with invalid format character '%c'\n", res_type);
386 return 0;
387 }
388
389 if (!success && !quiet)
390 printk(TPACPI_ERR "acpi_evalf(%s, %s, ...) failed: %d\n",
391 method, fmt0, status);
392
393 return success;
394 }
395
396 static int acpi_ec_read(int i, u8 *p)
397 {
398 int v;
399
400 if (ecrd_handle) {
401 if (!acpi_evalf(ecrd_handle, &v, NULL, "dd", i))
402 return 0;
403 *p = v;
404 } else {
405 if (ec_read(i, p) < 0)
406 return 0;
407 }
408
409 return 1;
410 }
411
412 static int acpi_ec_write(int i, u8 v)
413 {
414 if (ecwr_handle) {
415 if (!acpi_evalf(ecwr_handle, NULL, NULL, "vdd", i, v))
416 return 0;
417 } else {
418 if (ec_write(i, v) < 0)
419 return 0;
420 }
421
422 return 1;
423 }
424
425 #if defined(CONFIG_THINKPAD_ACPI_DOCK) || defined(CONFIG_THINKPAD_ACPI_BAY)
426 static int _sta(acpi_handle handle)
427 {
428 int status;
429
430 if (!handle || !acpi_evalf(handle, &status, "_STA", "d"))
431 status = 0;
432
433 return status;
434 }
435 #endif
436
437 static int issue_thinkpad_cmos_command(int cmos_cmd)
438 {
439 if (!cmos_handle)
440 return -ENXIO;
441
442 if (!acpi_evalf(cmos_handle, NULL, NULL, "vd", cmos_cmd))
443 return -EIO;
444
445 return 0;
446 }
447
448 /*************************************************************************
449 * ACPI device model
450 */
451
452 #define TPACPI_ACPIHANDLE_INIT(object) \
453 drv_acpi_handle_init(#object, &object##_handle, *object##_parent, \
454 object##_paths, ARRAY_SIZE(object##_paths), &object##_path)
455
456 static void drv_acpi_handle_init(char *name,
457 acpi_handle *handle, acpi_handle parent,
458 char **paths, int num_paths, char **path)
459 {
460 int i;
461 acpi_status status;
462
463 vdbg_printk(TPACPI_DBG_INIT, "trying to locate ACPI handle for %s\n",
464 name);
465
466 for (i = 0; i < num_paths; i++) {
467 status = acpi_get_handle(parent, paths[i], handle);
468 if (ACPI_SUCCESS(status)) {
469 *path = paths[i];
470 dbg_printk(TPACPI_DBG_INIT,
471 "Found ACPI handle %s for %s\n",
472 *path, name);
473 return;
474 }
475 }
476
477 vdbg_printk(TPACPI_DBG_INIT, "ACPI handle for %s not found\n",
478 name);
479 *handle = NULL;
480 }
481
482 static void dispatch_acpi_notify(acpi_handle handle, u32 event, void *data)
483 {
484 struct ibm_struct *ibm = data;
485
486 if (tpacpi_lifecycle != TPACPI_LIFE_RUNNING)
487 return;
488
489 if (!ibm || !ibm->acpi || !ibm->acpi->notify)
490 return;
491
492 ibm->acpi->notify(ibm, event);
493 }
494
495 static int __init setup_acpi_notify(struct ibm_struct *ibm)
496 {
497 acpi_status status;
498 int rc;
499
500 BUG_ON(!ibm->acpi);
501
502 if (!*ibm->acpi->handle)
503 return 0;
504
505 vdbg_printk(TPACPI_DBG_INIT,
506 "setting up ACPI notify for %s\n", ibm->name);
507
508 rc = acpi_bus_get_device(*ibm->acpi->handle, &ibm->acpi->device);
509 if (rc < 0) {
510 printk(TPACPI_ERR "acpi_bus_get_device(%s) failed: %d\n",
511 ibm->name, rc);
512 return -ENODEV;
513 }
514
515 acpi_driver_data(ibm->acpi->device) = ibm;
516 sprintf(acpi_device_class(ibm->acpi->device), "%s/%s",
517 TPACPI_ACPI_EVENT_PREFIX,
518 ibm->name);
519
520 status = acpi_install_notify_handler(*ibm->acpi->handle,
521 ibm->acpi->type, dispatch_acpi_notify, ibm);
522 if (ACPI_FAILURE(status)) {
523 if (status == AE_ALREADY_EXISTS) {
524 printk(TPACPI_NOTICE
525 "another device driver is already "
526 "handling %s events\n", ibm->name);
527 } else {
528 printk(TPACPI_ERR
529 "acpi_install_notify_handler(%s) failed: %d\n",
530 ibm->name, status);
531 }
532 return -ENODEV;
533 }
534 ibm->flags.acpi_notify_installed = 1;
535 return 0;
536 }
537
538 static int __init tpacpi_device_add(struct acpi_device *device)
539 {
540 return 0;
541 }
542
543 static int __init register_tpacpi_subdriver(struct ibm_struct *ibm)
544 {
545 int rc;
546
547 dbg_printk(TPACPI_DBG_INIT,
548 "registering %s as an ACPI driver\n", ibm->name);
549
550 BUG_ON(!ibm->acpi);
551
552 ibm->acpi->driver = kzalloc(sizeof(struct acpi_driver), GFP_KERNEL);
553 if (!ibm->acpi->driver) {
554 printk(TPACPI_ERR "kzalloc(ibm->driver) failed\n");
555 return -ENOMEM;
556 }
557
558 sprintf(ibm->acpi->driver->name, "%s_%s", TPACPI_NAME, ibm->name);
559 ibm->acpi->driver->ids = ibm->acpi->hid;
560
561 ibm->acpi->driver->ops.add = &tpacpi_device_add;
562
563 rc = acpi_bus_register_driver(ibm->acpi->driver);
564 if (rc < 0) {
565 printk(TPACPI_ERR "acpi_bus_register_driver(%s) failed: %d\n",
566 ibm->name, rc);
567 kfree(ibm->acpi->driver);
568 ibm->acpi->driver = NULL;
569 } else if (!rc)
570 ibm->flags.acpi_driver_registered = 1;
571
572 return rc;
573 }
574
575
576 /****************************************************************************
577 ****************************************************************************
578 *
579 * Procfs Helpers
580 *
581 ****************************************************************************
582 ****************************************************************************/
583
584 static int dispatch_procfs_read(char *page, char **start, off_t off,
585 int count, int *eof, void *data)
586 {
587 struct ibm_struct *ibm = data;
588 int len;
589
590 if (!ibm || !ibm->read)
591 return -EINVAL;
592
593 len = ibm->read(page);
594 if (len < 0)
595 return len;
596
597 if (len <= off + count)
598 *eof = 1;
599 *start = page + off;
600 len -= off;
601 if (len > count)
602 len = count;
603 if (len < 0)
604 len = 0;
605
606 return len;
607 }
608
609 static int dispatch_procfs_write(struct file *file,
610 const char __user *userbuf,
611 unsigned long count, void *data)
612 {
613 struct ibm_struct *ibm = data;
614 char *kernbuf;
615 int ret;
616
617 if (!ibm || !ibm->write)
618 return -EINVAL;
619
620 kernbuf = kmalloc(count + 2, GFP_KERNEL);
621 if (!kernbuf)
622 return -ENOMEM;
623
624 if (copy_from_user(kernbuf, userbuf, count)) {
625 kfree(kernbuf);
626 return -EFAULT;
627 }
628
629 kernbuf[count] = 0;
630 strcat(kernbuf, ",");
631 ret = ibm->write(kernbuf);
632 if (ret == 0)
633 ret = count;
634
635 kfree(kernbuf);
636
637 return ret;
638 }
639
640 static char *next_cmd(char **cmds)
641 {
642 char *start = *cmds;
643 char *end;
644
645 while ((end = strchr(start, ',')) && end == start)
646 start = end + 1;
647
648 if (!end)
649 return NULL;
650
651 *end = 0;
652 *cmds = end + 1;
653 return start;
654 }
655
656
657 /****************************************************************************
658 ****************************************************************************
659 *
660 * Device model: input, hwmon and platform
661 *
662 ****************************************************************************
663 ****************************************************************************/
664
665 static struct platform_device *tpacpi_pdev;
666 static struct platform_device *tpacpi_sensors_pdev;
667 static struct device *tpacpi_hwmon;
668 static struct input_dev *tpacpi_inputdev;
669 static struct mutex tpacpi_inputdev_send_mutex;
670 static LIST_HEAD(tpacpi_all_drivers);
671
672 static int tpacpi_suspend_handler(struct platform_device *pdev,
673 pm_message_t state)
674 {
675 struct ibm_struct *ibm, *itmp;
676
677 list_for_each_entry_safe(ibm, itmp,
678 &tpacpi_all_drivers,
679 all_drivers) {
680 if (ibm->suspend)
681 (ibm->suspend)(state);
682 }
683
684 return 0;
685 }
686
687 static int tpacpi_resume_handler(struct platform_device *pdev)
688 {
689 struct ibm_struct *ibm, *itmp;
690
691 list_for_each_entry_safe(ibm, itmp,
692 &tpacpi_all_drivers,
693 all_drivers) {
694 if (ibm->resume)
695 (ibm->resume)();
696 }
697
698 return 0;
699 }
700
701 static struct platform_driver tpacpi_pdriver = {
702 .driver = {
703 .name = TPACPI_DRVR_NAME,
704 .owner = THIS_MODULE,
705 },
706 .suspend = tpacpi_suspend_handler,
707 .resume = tpacpi_resume_handler,
708 };
709
710 static struct platform_driver tpacpi_hwmon_pdriver = {
711 .driver = {
712 .name = TPACPI_HWMON_DRVR_NAME,
713 .owner = THIS_MODULE,
714 },
715 };
716
717 /*************************************************************************
718 * sysfs support helpers
719 */
720
721 struct attribute_set {
722 unsigned int members, max_members;
723 struct attribute_group group;
724 };
725
726 struct attribute_set_obj {
727 struct attribute_set s;
728 struct attribute *a;
729 } __attribute__((packed));
730
731 static struct attribute_set *create_attr_set(unsigned int max_members,
732 const char *name)
733 {
734 struct attribute_set_obj *sobj;
735
736 if (max_members == 0)
737 return NULL;
738
739 /* Allocates space for implicit NULL at the end too */
740 sobj = kzalloc(sizeof(struct attribute_set_obj) +
741 max_members * sizeof(struct attribute *),
742 GFP_KERNEL);
743 if (!sobj)
744 return NULL;
745 sobj->s.max_members = max_members;
746 sobj->s.group.attrs = &sobj->a;
747 sobj->s.group.name = name;
748
749 return &sobj->s;
750 }
751
752 #define destroy_attr_set(_set) \
753 kfree(_set);
754
755 /* not multi-threaded safe, use it in a single thread per set */
756 static int add_to_attr_set(struct attribute_set *s, struct attribute *attr)
757 {
758 if (!s || !attr)
759 return -EINVAL;
760
761 if (s->members >= s->max_members)
762 return -ENOMEM;
763
764 s->group.attrs[s->members] = attr;
765 s->members++;
766
767 return 0;
768 }
769
770 static int add_many_to_attr_set(struct attribute_set *s,
771 struct attribute **attr,
772 unsigned int count)
773 {
774 int i, res;
775
776 for (i = 0; i < count; i++) {
777 res = add_to_attr_set(s, attr[i]);
778 if (res)
779 return res;
780 }
781
782 return 0;
783 }
784
785 static void delete_attr_set(struct attribute_set *s, struct kobject *kobj)
786 {
787 sysfs_remove_group(kobj, &s->group);
788 destroy_attr_set(s);
789 }
790
791 #define register_attr_set_with_sysfs(_attr_set, _kobj) \
792 sysfs_create_group(_kobj, &_attr_set->group)
793
794 static int parse_strtoul(const char *buf,
795 unsigned long max, unsigned long *value)
796 {
797 char *endp;
798
799 while (*buf && isspace(*buf))
800 buf++;
801 *value = simple_strtoul(buf, &endp, 0);
802 while (*endp && isspace(*endp))
803 endp++;
804 if (*endp || *value > max)
805 return -EINVAL;
806
807 return 0;
808 }
809
810 /*************************************************************************
811 * thinkpad-acpi driver attributes
812 */
813
814 /* interface_version --------------------------------------------------- */
815 static ssize_t tpacpi_driver_interface_version_show(
816 struct device_driver *drv,
817 char *buf)
818 {
819 return snprintf(buf, PAGE_SIZE, "0x%08x\n", TPACPI_SYSFS_VERSION);
820 }
821
822 static DRIVER_ATTR(interface_version, S_IRUGO,
823 tpacpi_driver_interface_version_show, NULL);
824
825 /* debug_level --------------------------------------------------------- */
826 static ssize_t tpacpi_driver_debug_show(struct device_driver *drv,
827 char *buf)
828 {
829 return snprintf(buf, PAGE_SIZE, "0x%04x\n", dbg_level);
830 }
831
832 static ssize_t tpacpi_driver_debug_store(struct device_driver *drv,
833 const char *buf, size_t count)
834 {
835 unsigned long t;
836
837 if (parse_strtoul(buf, 0xffff, &t))
838 return -EINVAL;
839
840 dbg_level = t;
841
842 return count;
843 }
844
845 static DRIVER_ATTR(debug_level, S_IWUSR | S_IRUGO,
846 tpacpi_driver_debug_show, tpacpi_driver_debug_store);
847
848 /* version ------------------------------------------------------------- */
849 static ssize_t tpacpi_driver_version_show(struct device_driver *drv,
850 char *buf)
851 {
852 return snprintf(buf, PAGE_SIZE, "%s v%s\n",
853 TPACPI_DESC, TPACPI_VERSION);
854 }
855
856 static DRIVER_ATTR(version, S_IRUGO,
857 tpacpi_driver_version_show, NULL);
858
859 /* --------------------------------------------------------------------- */
860
861 static struct driver_attribute *tpacpi_driver_attributes[] = {
862 &driver_attr_debug_level, &driver_attr_version,
863 &driver_attr_interface_version,
864 };
865
866 static int __init tpacpi_create_driver_attributes(struct device_driver *drv)
867 {
868 int i, res;
869
870 i = 0;
871 res = 0;
872 while (!res && i < ARRAY_SIZE(tpacpi_driver_attributes)) {
873 res = driver_create_file(drv, tpacpi_driver_attributes[i]);
874 i++;
875 }
876
877 return res;
878 }
879
880 static void tpacpi_remove_driver_attributes(struct device_driver *drv)
881 {
882 int i;
883
884 for (i = 0; i < ARRAY_SIZE(tpacpi_driver_attributes); i++)
885 driver_remove_file(drv, tpacpi_driver_attributes[i]);
886 }
887
888 /****************************************************************************
889 ****************************************************************************
890 *
891 * Subdrivers
892 *
893 ****************************************************************************
894 ****************************************************************************/
895
896 /*************************************************************************
897 * thinkpad-acpi init subdriver
898 */
899
900 static int __init thinkpad_acpi_driver_init(struct ibm_init_struct *iibm)
901 {
902 printk(TPACPI_INFO "%s v%s\n", TPACPI_DESC, TPACPI_VERSION);
903 printk(TPACPI_INFO "%s\n", TPACPI_URL);
904
905 printk(TPACPI_INFO "ThinkPad BIOS %s, EC %s\n",
906 (thinkpad_id.bios_version_str) ?
907 thinkpad_id.bios_version_str : "unknown",
908 (thinkpad_id.ec_version_str) ?
909 thinkpad_id.ec_version_str : "unknown");
910
911 if (thinkpad_id.vendor && thinkpad_id.model_str)
912 printk(TPACPI_INFO "%s %s\n",
913 (thinkpad_id.vendor == PCI_VENDOR_ID_IBM) ?
914 "IBM" : ((thinkpad_id.vendor ==
915 PCI_VENDOR_ID_LENOVO) ?
916 "Lenovo" : "Unknown vendor"),
917 thinkpad_id.model_str);
918
919 return 0;
920 }
921
922 static int thinkpad_acpi_driver_read(char *p)
923 {
924 int len = 0;
925
926 len += sprintf(p + len, "driver:\t\t%s\n", TPACPI_DESC);
927 len += sprintf(p + len, "version:\t%s\n", TPACPI_VERSION);
928
929 return len;
930 }
931
932 static struct ibm_struct thinkpad_acpi_driver_data = {
933 .name = "driver",
934 .read = thinkpad_acpi_driver_read,
935 };
936
937 /*************************************************************************
938 * Hotkey subdriver
939 */
940
941 enum { /* hot key scan codes (derived from ACPI DSDT) */
942 TP_ACPI_HOTKEYSCAN_FNF1 = 0,
943 TP_ACPI_HOTKEYSCAN_FNF2,
944 TP_ACPI_HOTKEYSCAN_FNF3,
945 TP_ACPI_HOTKEYSCAN_FNF4,
946 TP_ACPI_HOTKEYSCAN_FNF5,
947 TP_ACPI_HOTKEYSCAN_FNF6,
948 TP_ACPI_HOTKEYSCAN_FNF7,
949 TP_ACPI_HOTKEYSCAN_FNF8,
950 TP_ACPI_HOTKEYSCAN_FNF9,
951 TP_ACPI_HOTKEYSCAN_FNF10,
952 TP_ACPI_HOTKEYSCAN_FNF11,
953 TP_ACPI_HOTKEYSCAN_FNF12,
954 TP_ACPI_HOTKEYSCAN_FNBACKSPACE,
955 TP_ACPI_HOTKEYSCAN_FNINSERT,
956 TP_ACPI_HOTKEYSCAN_FNDELETE,
957 TP_ACPI_HOTKEYSCAN_FNHOME,
958 TP_ACPI_HOTKEYSCAN_FNEND,
959 TP_ACPI_HOTKEYSCAN_FNPAGEUP,
960 TP_ACPI_HOTKEYSCAN_FNPAGEDOWN,
961 TP_ACPI_HOTKEYSCAN_FNSPACE,
962 TP_ACPI_HOTKEYSCAN_VOLUMEUP,
963 TP_ACPI_HOTKEYSCAN_VOLUMEDOWN,
964 TP_ACPI_HOTKEYSCAN_MUTE,
965 TP_ACPI_HOTKEYSCAN_THINKPAD,
966 };
967
968 enum { /* Keys available through NVRAM polling */
969 TPACPI_HKEY_NVRAM_KNOWN_MASK = 0x00fb88c0U,
970 TPACPI_HKEY_NVRAM_GOOD_MASK = 0x00fb8000U,
971 };
972
973 enum { /* Positions of some of the keys in hotkey masks */
974 TP_ACPI_HKEY_DISPSWTCH_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNF7,
975 TP_ACPI_HKEY_DISPXPAND_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNF8,
976 TP_ACPI_HKEY_HIBERNATE_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNF12,
977 TP_ACPI_HKEY_BRGHTUP_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNHOME,
978 TP_ACPI_HKEY_BRGHTDWN_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNEND,
979 TP_ACPI_HKEY_THNKLGHT_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNPAGEUP,
980 TP_ACPI_HKEY_ZOOM_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNSPACE,
981 TP_ACPI_HKEY_VOLUP_MASK = 1 << TP_ACPI_HOTKEYSCAN_VOLUMEUP,
982 TP_ACPI_HKEY_VOLDWN_MASK = 1 << TP_ACPI_HOTKEYSCAN_VOLUMEDOWN,
983 TP_ACPI_HKEY_MUTE_MASK = 1 << TP_ACPI_HOTKEYSCAN_MUTE,
984 TP_ACPI_HKEY_THINKPAD_MASK = 1 << TP_ACPI_HOTKEYSCAN_THINKPAD,
985 };
986
987 enum { /* NVRAM to ACPI HKEY group map */
988 TP_NVRAM_HKEY_GROUP_HK2 = TP_ACPI_HKEY_THINKPAD_MASK |
989 TP_ACPI_HKEY_ZOOM_MASK |
990 TP_ACPI_HKEY_DISPSWTCH_MASK |
991 TP_ACPI_HKEY_HIBERNATE_MASK,
992 TP_NVRAM_HKEY_GROUP_BRIGHTNESS = TP_ACPI_HKEY_BRGHTUP_MASK |
993 TP_ACPI_HKEY_BRGHTDWN_MASK,
994 TP_NVRAM_HKEY_GROUP_VOLUME = TP_ACPI_HKEY_VOLUP_MASK |
995 TP_ACPI_HKEY_VOLDWN_MASK |
996 TP_ACPI_HKEY_MUTE_MASK,
997 };
998
999 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
1000 struct tp_nvram_state {
1001 u16 thinkpad_toggle:1;
1002 u16 zoom_toggle:1;
1003 u16 display_toggle:1;
1004 u16 thinklight_toggle:1;
1005 u16 hibernate_toggle:1;
1006 u16 displayexp_toggle:1;
1007 u16 display_state:1;
1008 u16 brightness_toggle:1;
1009 u16 volume_toggle:1;
1010 u16 mute:1;
1011
1012 u8 brightness_level;
1013 u8 volume_level;
1014 };
1015
1016 static struct task_struct *tpacpi_hotkey_task;
1017 static u32 hotkey_source_mask; /* bit mask 0=ACPI,1=NVRAM */
1018 static int hotkey_poll_freq = 10; /* Hz */
1019 static struct mutex hotkey_thread_mutex;
1020 static struct mutex hotkey_thread_data_mutex;
1021 static unsigned int hotkey_config_change;
1022
1023 #else /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
1024
1025 #define hotkey_source_mask 0U
1026
1027 #endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
1028
1029 static struct mutex hotkey_mutex;
1030
1031 static enum { /* Reasons for waking up */
1032 TP_ACPI_WAKEUP_NONE = 0, /* None or unknown */
1033 TP_ACPI_WAKEUP_BAYEJ, /* Bay ejection request */
1034 TP_ACPI_WAKEUP_UNDOCK, /* Undock request */
1035 } hotkey_wakeup_reason;
1036
1037 static int hotkey_autosleep_ack;
1038
1039 static int hotkey_orig_status;
1040 static u32 hotkey_orig_mask;
1041 static u32 hotkey_all_mask;
1042 static u32 hotkey_reserved_mask;
1043 static u32 hotkey_mask;
1044
1045 static unsigned int hotkey_report_mode;
1046
1047 static u16 *hotkey_keycode_map;
1048
1049 static struct attribute_set *hotkey_dev_attributes;
1050
1051 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
1052 #define HOTKEY_CONFIG_CRITICAL_START \
1053 do { \
1054 mutex_lock(&hotkey_thread_data_mutex); \
1055 hotkey_config_change++; \
1056 } while (0);
1057 #define HOTKEY_CONFIG_CRITICAL_END \
1058 mutex_unlock(&hotkey_thread_data_mutex);
1059 #else
1060 #define HOTKEY_CONFIG_CRITICAL_START
1061 #define HOTKEY_CONFIG_CRITICAL_END
1062 #endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
1063
1064 /* HKEY.MHKG() return bits */
1065 #define TP_HOTKEY_TABLET_MASK (1 << 3)
1066
1067 static int hotkey_get_wlsw(int *status)
1068 {
1069 if (!acpi_evalf(hkey_handle, status, "WLSW", "d"))
1070 return -EIO;
1071 return 0;
1072 }
1073
1074 static int hotkey_get_tablet_mode(int *status)
1075 {
1076 int s;
1077
1078 if (!acpi_evalf(hkey_handle, &s, "MHKG", "d"))
1079 return -EIO;
1080
1081 *status = ((s & TP_HOTKEY_TABLET_MASK) != 0);
1082 return 0;
1083 }
1084
1085 /*
1086 * Call with hotkey_mutex held
1087 */
1088 static int hotkey_mask_get(void)
1089 {
1090 u32 m = 0;
1091
1092 if (tp_features.hotkey_mask) {
1093 if (!acpi_evalf(hkey_handle, &m, "DHKN", "d"))
1094 return -EIO;
1095 }
1096 hotkey_mask = m | (hotkey_source_mask & hotkey_mask);
1097
1098 return 0;
1099 }
1100
1101 /*
1102 * Call with hotkey_mutex held
1103 */
1104 static int hotkey_mask_set(u32 mask)
1105 {
1106 int i;
1107 int rc = 0;
1108
1109 if (tp_features.hotkey_mask) {
1110 HOTKEY_CONFIG_CRITICAL_START
1111 for (i = 0; i < 32; i++) {
1112 u32 m = 1 << i;
1113 /* enable in firmware mask only keys not in NVRAM
1114 * mode, but enable the key in the cached hotkey_mask
1115 * regardless of mode, or the key will end up
1116 * disabled by hotkey_mask_get() */
1117 if (!acpi_evalf(hkey_handle,
1118 NULL, "MHKM", "vdd", i + 1,
1119 !!((mask & ~hotkey_source_mask) & m))) {
1120 rc = -EIO;
1121 break;
1122 } else {
1123 hotkey_mask = (hotkey_mask & ~m) | (mask & m);
1124 }
1125 }
1126 HOTKEY_CONFIG_CRITICAL_END
1127
1128 /* hotkey_mask_get must be called unconditionally below */
1129 if (!hotkey_mask_get() && !rc &&
1130 (hotkey_mask & ~hotkey_source_mask) !=
1131 (mask & ~hotkey_source_mask)) {
1132 printk(TPACPI_NOTICE
1133 "requested hot key mask 0x%08x, but "
1134 "firmware forced it to 0x%08x\n",
1135 mask, hotkey_mask);
1136 }
1137 } else {
1138 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
1139 HOTKEY_CONFIG_CRITICAL_START
1140 hotkey_mask = mask & hotkey_source_mask;
1141 HOTKEY_CONFIG_CRITICAL_END
1142 hotkey_mask_get();
1143 if (hotkey_mask != mask) {
1144 printk(TPACPI_NOTICE
1145 "requested hot key mask 0x%08x, "
1146 "forced to 0x%08x (NVRAM poll mask is "
1147 "0x%08x): no firmware mask support\n",
1148 mask, hotkey_mask, hotkey_source_mask);
1149 }
1150 #else
1151 hotkey_mask_get();
1152 rc = -ENXIO;
1153 #endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
1154 }
1155
1156 return rc;
1157 }
1158
1159 static int hotkey_status_get(int *status)
1160 {
1161 if (!acpi_evalf(hkey_handle, status, "DHKC", "d"))
1162 return -EIO;
1163
1164 return 0;
1165 }
1166
1167 static int hotkey_status_set(int status)
1168 {
1169 if (!acpi_evalf(hkey_handle, NULL, "MHKC", "vd", status))
1170 return -EIO;
1171
1172 return 0;
1173 }
1174
1175 static void tpacpi_input_send_radiosw(void)
1176 {
1177 int wlsw;
1178
1179 if (tp_features.hotkey_wlsw && !hotkey_get_wlsw(&wlsw)) {
1180 mutex_lock(&tpacpi_inputdev_send_mutex);
1181
1182 input_report_switch(tpacpi_inputdev,
1183 SW_RADIO, !!wlsw);
1184 input_sync(tpacpi_inputdev);
1185
1186 mutex_unlock(&tpacpi_inputdev_send_mutex);
1187 }
1188 }
1189
1190 static void tpacpi_input_send_tabletsw(void)
1191 {
1192 int state;
1193
1194 if (tp_features.hotkey_tablet &&
1195 !hotkey_get_tablet_mode(&state)) {
1196 mutex_lock(&tpacpi_inputdev_send_mutex);
1197
1198 input_report_switch(tpacpi_inputdev,
1199 SW_TABLET_MODE, !!state);
1200 input_sync(tpacpi_inputdev);
1201
1202 mutex_unlock(&tpacpi_inputdev_send_mutex);
1203 }
1204 }
1205
1206 static void tpacpi_input_send_key(unsigned int scancode)
1207 {
1208 unsigned int keycode;
1209
1210 keycode = hotkey_keycode_map[scancode];
1211
1212 if (keycode != KEY_RESERVED) {
1213 mutex_lock(&tpacpi_inputdev_send_mutex);
1214
1215 input_report_key(tpacpi_inputdev, keycode, 1);
1216 if (keycode == KEY_UNKNOWN)
1217 input_event(tpacpi_inputdev, EV_MSC, MSC_SCAN,
1218 scancode);
1219 input_sync(tpacpi_inputdev);
1220
1221 input_report_key(tpacpi_inputdev, keycode, 0);
1222 if (keycode == KEY_UNKNOWN)
1223 input_event(tpacpi_inputdev, EV_MSC, MSC_SCAN,
1224 scancode);
1225 input_sync(tpacpi_inputdev);
1226
1227 mutex_unlock(&tpacpi_inputdev_send_mutex);
1228 }
1229 }
1230
1231 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
1232 static struct tp_acpi_drv_struct ibm_hotkey_acpidriver;
1233
1234 static void tpacpi_hotkey_send_key(unsigned int scancode)
1235 {
1236 tpacpi_input_send_key(scancode);
1237 if (hotkey_report_mode < 2) {
1238 acpi_bus_generate_proc_event(ibm_hotkey_acpidriver.device,
1239 0x80, 0x1001 + scancode);
1240 }
1241 }
1242
1243 static void hotkey_read_nvram(struct tp_nvram_state *n, u32 m)
1244 {
1245 u8 d;
1246
1247 if (m & TP_NVRAM_HKEY_GROUP_HK2) {
1248 d = nvram_read_byte(TP_NVRAM_ADDR_HK2);
1249 n->thinkpad_toggle = !!(d & TP_NVRAM_MASK_HKT_THINKPAD);
1250 n->zoom_toggle = !!(d & TP_NVRAM_MASK_HKT_ZOOM);
1251 n->display_toggle = !!(d & TP_NVRAM_MASK_HKT_DISPLAY);
1252 n->hibernate_toggle = !!(d & TP_NVRAM_MASK_HKT_HIBERNATE);
1253 }
1254 if (m & TP_ACPI_HKEY_THNKLGHT_MASK) {
1255 d = nvram_read_byte(TP_NVRAM_ADDR_THINKLIGHT);
1256 n->thinklight_toggle = !!(d & TP_NVRAM_MASK_THINKLIGHT);
1257 }
1258 if (m & TP_ACPI_HKEY_DISPXPAND_MASK) {
1259 d = nvram_read_byte(TP_NVRAM_ADDR_VIDEO);
1260 n->displayexp_toggle =
1261 !!(d & TP_NVRAM_MASK_HKT_DISPEXPND);
1262 }
1263 if (m & TP_NVRAM_HKEY_GROUP_BRIGHTNESS) {
1264 d = nvram_read_byte(TP_NVRAM_ADDR_BRIGHTNESS);
1265 n->brightness_level = (d & TP_NVRAM_MASK_LEVEL_BRIGHTNESS)
1266 >> TP_NVRAM_POS_LEVEL_BRIGHTNESS;
1267 n->brightness_toggle =
1268 !!(d & TP_NVRAM_MASK_HKT_BRIGHTNESS);
1269 }
1270 if (m & TP_NVRAM_HKEY_GROUP_VOLUME) {
1271 d = nvram_read_byte(TP_NVRAM_ADDR_MIXER);
1272 n->volume_level = (d & TP_NVRAM_MASK_LEVEL_VOLUME)
1273 >> TP_NVRAM_POS_LEVEL_VOLUME;
1274 n->mute = !!(d & TP_NVRAM_MASK_MUTE);
1275 n->volume_toggle = !!(d & TP_NVRAM_MASK_HKT_VOLUME);
1276 }
1277 }
1278
1279 #define TPACPI_COMPARE_KEY(__scancode, __member) \
1280 do { \
1281 if ((mask & (1 << __scancode)) && \
1282 oldn->__member != newn->__member) \
1283 tpacpi_hotkey_send_key(__scancode); \
1284 } while (0)
1285
1286 #define TPACPI_MAY_SEND_KEY(__scancode) \
1287 do { if (mask & (1 << __scancode)) \
1288 tpacpi_hotkey_send_key(__scancode); } while (0)
1289
1290 static void hotkey_compare_and_issue_event(struct tp_nvram_state *oldn,
1291 struct tp_nvram_state *newn,
1292 u32 mask)
1293 {
1294 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_THINKPAD, thinkpad_toggle);
1295 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNSPACE, zoom_toggle);
1296 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNF7, display_toggle);
1297 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNF12, hibernate_toggle);
1298
1299 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNPAGEUP, thinklight_toggle);
1300
1301 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNF8, displayexp_toggle);
1302
1303 /* handle volume */
1304 if (oldn->volume_toggle != newn->volume_toggle) {
1305 if (oldn->mute != newn->mute) {
1306 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_MUTE);
1307 }
1308 if (oldn->volume_level > newn->volume_level) {
1309 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEDOWN);
1310 } else if (oldn->volume_level < newn->volume_level) {
1311 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEUP);
1312 } else if (oldn->mute == newn->mute) {
1313 /* repeated key presses that didn't change state */
1314 if (newn->mute) {
1315 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_MUTE);
1316 } else if (newn->volume_level != 0) {
1317 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEUP);
1318 } else {
1319 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEDOWN);
1320 }
1321 }
1322 }
1323
1324 /* handle brightness */
1325 if (oldn->brightness_toggle != newn->brightness_toggle) {
1326 if (oldn->brightness_level < newn->brightness_level) {
1327 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNHOME);
1328 } else if (oldn->brightness_level > newn->brightness_level) {
1329 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNEND);
1330 } else {
1331 /* repeated key presses that didn't change state */
1332 if (newn->brightness_level != 0) {
1333 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNHOME);
1334 } else {
1335 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNEND);
1336 }
1337 }
1338 }
1339 }
1340
1341 #undef TPACPI_COMPARE_KEY
1342 #undef TPACPI_MAY_SEND_KEY
1343
1344 static int hotkey_kthread(void *data)
1345 {
1346 struct tp_nvram_state s[2];
1347 u32 mask;
1348 unsigned int si, so;
1349 unsigned long t;
1350 unsigned int change_detector, must_reset;
1351
1352 mutex_lock(&hotkey_thread_mutex);
1353
1354 if (tpacpi_lifecycle == TPACPI_LIFE_EXITING)
1355 goto exit;
1356
1357 set_freezable();
1358
1359 so = 0;
1360 si = 1;
1361 t = 0;
1362
1363 /* Initial state for compares */
1364 mutex_lock(&hotkey_thread_data_mutex);
1365 change_detector = hotkey_config_change;
1366 mask = hotkey_source_mask & hotkey_mask;
1367 mutex_unlock(&hotkey_thread_data_mutex);
1368 hotkey_read_nvram(&s[so], mask);
1369
1370 while (!kthread_should_stop() && hotkey_poll_freq) {
1371 if (t == 0)
1372 t = 1000/hotkey_poll_freq;
1373 t = msleep_interruptible(t);
1374 if (unlikely(kthread_should_stop()))
1375 break;
1376 must_reset = try_to_freeze();
1377 if (t > 0 && !must_reset)
1378 continue;
1379
1380 mutex_lock(&hotkey_thread_data_mutex);
1381 if (must_reset || hotkey_config_change != change_detector) {
1382 /* forget old state on thaw or config change */
1383 si = so;
1384 t = 0;
1385 change_detector = hotkey_config_change;
1386 }
1387 mask = hotkey_source_mask & hotkey_mask;
1388 mutex_unlock(&hotkey_thread_data_mutex);
1389
1390 if (likely(mask)) {
1391 hotkey_read_nvram(&s[si], mask);
1392 if (likely(si != so)) {
1393 hotkey_compare_and_issue_event(&s[so], &s[si],
1394 mask);
1395 }
1396 }
1397
1398 so = si;
1399 si ^= 1;
1400 }
1401
1402 exit:
1403 mutex_unlock(&hotkey_thread_mutex);
1404 return 0;
1405 }
1406
1407 static void hotkey_poll_stop_sync(void)
1408 {
1409 if (tpacpi_hotkey_task) {
1410 if (frozen(tpacpi_hotkey_task) ||
1411 freezing(tpacpi_hotkey_task))
1412 thaw_process(tpacpi_hotkey_task);
1413
1414 kthread_stop(tpacpi_hotkey_task);
1415 tpacpi_hotkey_task = NULL;
1416 mutex_lock(&hotkey_thread_mutex);
1417 /* at this point, the thread did exit */
1418 mutex_unlock(&hotkey_thread_mutex);
1419 }
1420 }
1421
1422 /* call with hotkey_mutex held */
1423 static void hotkey_poll_setup(int may_warn)
1424 {
1425 if ((hotkey_source_mask & hotkey_mask) != 0 &&
1426 hotkey_poll_freq > 0 &&
1427 (tpacpi_inputdev->users > 0 || hotkey_report_mode < 2)) {
1428 if (!tpacpi_hotkey_task) {
1429 tpacpi_hotkey_task = kthread_run(hotkey_kthread,
1430 NULL,
1431 TPACPI_FILE "d");
1432 if (IS_ERR(tpacpi_hotkey_task)) {
1433 tpacpi_hotkey_task = NULL;
1434 printk(TPACPI_ERR
1435 "could not create kernel thread "
1436 "for hotkey polling\n");
1437 }
1438 }
1439 } else {
1440 hotkey_poll_stop_sync();
1441 if (may_warn &&
1442 hotkey_source_mask != 0 && hotkey_poll_freq == 0) {
1443 printk(TPACPI_NOTICE
1444 "hot keys 0x%08x require polling, "
1445 "which is currently disabled\n",
1446 hotkey_source_mask);
1447 }
1448 }
1449 }
1450
1451 static void hotkey_poll_setup_safe(int may_warn)
1452 {
1453 mutex_lock(&hotkey_mutex);
1454 hotkey_poll_setup(may_warn);
1455 mutex_unlock(&hotkey_mutex);
1456 }
1457
1458 #else /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
1459
1460 static void hotkey_poll_setup_safe(int __unused)
1461 {
1462 }
1463
1464 #endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
1465
1466 static int hotkey_inputdev_open(struct input_dev *dev)
1467 {
1468 switch (tpacpi_lifecycle) {
1469 case TPACPI_LIFE_INIT:
1470 /*
1471 * hotkey_init will call hotkey_poll_setup_safe
1472 * at the appropriate moment
1473 */
1474 return 0;
1475 case TPACPI_LIFE_EXITING:
1476 return -EBUSY;
1477 case TPACPI_LIFE_RUNNING:
1478 hotkey_poll_setup_safe(0);
1479 return 0;
1480 }
1481
1482 /* Should only happen if tpacpi_lifecycle is corrupt */
1483 BUG();
1484 return -EBUSY;
1485 }
1486
1487 static void hotkey_inputdev_close(struct input_dev *dev)
1488 {
1489 /* disable hotkey polling when possible */
1490 if (tpacpi_lifecycle == TPACPI_LIFE_RUNNING)
1491 hotkey_poll_setup_safe(0);
1492 }
1493
1494 /* sysfs hotkey enable ------------------------------------------------- */
1495 static ssize_t hotkey_enable_show(struct device *dev,
1496 struct device_attribute *attr,
1497 char *buf)
1498 {
1499 int res, status;
1500
1501 res = hotkey_status_get(&status);
1502 if (res)
1503 return res;
1504
1505 return snprintf(buf, PAGE_SIZE, "%d\n", status);
1506 }
1507
1508 static ssize_t hotkey_enable_store(struct device *dev,
1509 struct device_attribute *attr,
1510 const char *buf, size_t count)
1511 {
1512 unsigned long t;
1513 int res;
1514
1515 if (parse_strtoul(buf, 1, &t))
1516 return -EINVAL;
1517
1518 res = hotkey_status_set(t);
1519
1520 return (res) ? res : count;
1521 }
1522
1523 static struct device_attribute dev_attr_hotkey_enable =
1524 __ATTR(hotkey_enable, S_IWUSR | S_IRUGO,
1525 hotkey_enable_show, hotkey_enable_store);
1526
1527 /* sysfs hotkey mask --------------------------------------------------- */
1528 static ssize_t hotkey_mask_show(struct device *dev,
1529 struct device_attribute *attr,
1530 char *buf)
1531 {
1532 int res;
1533
1534 if (mutex_lock_interruptible(&hotkey_mutex))
1535 return -ERESTARTSYS;
1536 res = hotkey_mask_get();
1537 mutex_unlock(&hotkey_mutex);
1538
1539 return (res)?
1540 res : snprintf(buf, PAGE_SIZE, "0x%08x\n", hotkey_mask);
1541 }
1542
1543 static ssize_t hotkey_mask_store(struct device *dev,
1544 struct device_attribute *attr,
1545 const char *buf, size_t count)
1546 {
1547 unsigned long t;
1548 int res;
1549
1550 if (parse_strtoul(buf, 0xffffffffUL, &t))
1551 return -EINVAL;
1552
1553 if (mutex_lock_interruptible(&hotkey_mutex))
1554 return -ERESTARTSYS;
1555
1556 res = hotkey_mask_set(t);
1557
1558 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
1559 hotkey_poll_setup(1);
1560 #endif
1561
1562 mutex_unlock(&hotkey_mutex);
1563
1564 return (res) ? res : count;
1565 }
1566
1567 static struct device_attribute dev_attr_hotkey_mask =
1568 __ATTR(hotkey_mask, S_IWUSR | S_IRUGO,
1569 hotkey_mask_show, hotkey_mask_store);
1570
1571 /* sysfs hotkey bios_enabled ------------------------------------------- */
1572 static ssize_t hotkey_bios_enabled_show(struct device *dev,
1573 struct device_attribute *attr,
1574 char *buf)
1575 {
1576 return snprintf(buf, PAGE_SIZE, "%d\n", hotkey_orig_status);
1577 }
1578
1579 static struct device_attribute dev_attr_hotkey_bios_enabled =
1580 __ATTR(hotkey_bios_enabled, S_IRUGO, hotkey_bios_enabled_show, NULL);
1581
1582 /* sysfs hotkey bios_mask ---------------------------------------------- */
1583 static ssize_t hotkey_bios_mask_show(struct device *dev,
1584 struct device_attribute *attr,
1585 char *buf)
1586 {
1587 return snprintf(buf, PAGE_SIZE, "0x%08x\n", hotkey_orig_mask);
1588 }
1589
1590 static struct device_attribute dev_attr_hotkey_bios_mask =
1591 __ATTR(hotkey_bios_mask, S_IRUGO, hotkey_bios_mask_show, NULL);
1592
1593 /* sysfs hotkey all_mask ----------------------------------------------- */
1594 static ssize_t hotkey_all_mask_show(struct device *dev,
1595 struct device_attribute *attr,
1596 char *buf)
1597 {
1598 return snprintf(buf, PAGE_SIZE, "0x%08x\n",
1599 hotkey_all_mask | hotkey_source_mask);
1600 }
1601
1602 static struct device_attribute dev_attr_hotkey_all_mask =
1603 __ATTR(hotkey_all_mask, S_IRUGO, hotkey_all_mask_show, NULL);
1604
1605 /* sysfs hotkey recommended_mask --------------------------------------- */
1606 static ssize_t hotkey_recommended_mask_show(struct device *dev,
1607 struct device_attribute *attr,
1608 char *buf)
1609 {
1610 return snprintf(buf, PAGE_SIZE, "0x%08x\n",
1611 (hotkey_all_mask | hotkey_source_mask)
1612 & ~hotkey_reserved_mask);
1613 }
1614
1615 static struct device_attribute dev_attr_hotkey_recommended_mask =
1616 __ATTR(hotkey_recommended_mask, S_IRUGO,
1617 hotkey_recommended_mask_show, NULL);
1618
1619 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
1620
1621 /* sysfs hotkey hotkey_source_mask ------------------------------------- */
1622 static ssize_t hotkey_source_mask_show(struct device *dev,
1623 struct device_attribute *attr,
1624 char *buf)
1625 {
1626 return snprintf(buf, PAGE_SIZE, "0x%08x\n", hotkey_source_mask);
1627 }
1628
1629 static ssize_t hotkey_source_mask_store(struct device *dev,
1630 struct device_attribute *attr,
1631 const char *buf, size_t count)
1632 {
1633 unsigned long t;
1634
1635 if (parse_strtoul(buf, 0xffffffffUL, &t) ||
1636 ((t & ~TPACPI_HKEY_NVRAM_KNOWN_MASK) != 0))
1637 return -EINVAL;
1638
1639 if (mutex_lock_interruptible(&hotkey_mutex))
1640 return -ERESTARTSYS;
1641
1642 HOTKEY_CONFIG_CRITICAL_START
1643 hotkey_source_mask = t;
1644 HOTKEY_CONFIG_CRITICAL_END
1645
1646 hotkey_poll_setup(1);
1647
1648 mutex_unlock(&hotkey_mutex);
1649
1650 return count;
1651 }
1652
1653 static struct device_attribute dev_attr_hotkey_source_mask =
1654 __ATTR(hotkey_source_mask, S_IWUSR | S_IRUGO,
1655 hotkey_source_mask_show, hotkey_source_mask_store);
1656
1657 /* sysfs hotkey hotkey_poll_freq --------------------------------------- */
1658 static ssize_t hotkey_poll_freq_show(struct device *dev,
1659 struct device_attribute *attr,
1660 char *buf)
1661 {
1662 return snprintf(buf, PAGE_SIZE, "%d\n", hotkey_poll_freq);
1663 }
1664
1665 static ssize_t hotkey_poll_freq_store(struct device *dev,
1666 struct device_attribute *attr,
1667 const char *buf, size_t count)
1668 {
1669 unsigned long t;
1670
1671 if (parse_strtoul(buf, 25, &t))
1672 return -EINVAL;
1673
1674 if (mutex_lock_interruptible(&hotkey_mutex))
1675 return -ERESTARTSYS;
1676
1677 hotkey_poll_freq = t;
1678
1679 hotkey_poll_setup(1);
1680 mutex_unlock(&hotkey_mutex);
1681
1682 return count;
1683 }
1684
1685 static struct device_attribute dev_attr_hotkey_poll_freq =
1686 __ATTR(hotkey_poll_freq, S_IWUSR | S_IRUGO,
1687 hotkey_poll_freq_show, hotkey_poll_freq_store);
1688
1689 #endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
1690
1691 /* sysfs hotkey radio_sw (pollable) ------------------------------------ */
1692 static ssize_t hotkey_radio_sw_show(struct device *dev,
1693 struct device_attribute *attr,
1694 char *buf)
1695 {
1696 int res, s;
1697 res = hotkey_get_wlsw(&s);
1698 if (res < 0)
1699 return res;
1700
1701 return snprintf(buf, PAGE_SIZE, "%d\n", !!s);
1702 }
1703
1704 static struct device_attribute dev_attr_hotkey_radio_sw =
1705 __ATTR(hotkey_radio_sw, S_IRUGO, hotkey_radio_sw_show, NULL);
1706
1707 static void hotkey_radio_sw_notify_change(void)
1708 {
1709 if (tp_features.hotkey_wlsw)
1710 sysfs_notify(&tpacpi_pdev->dev.kobj, NULL,
1711 "hotkey_radio_sw");
1712 }
1713
1714 /* sysfs hotkey tablet mode (pollable) --------------------------------- */
1715 static ssize_t hotkey_tablet_mode_show(struct device *dev,
1716 struct device_attribute *attr,
1717 char *buf)
1718 {
1719 int res, s;
1720 res = hotkey_get_tablet_mode(&s);
1721 if (res < 0)
1722 return res;
1723
1724 return snprintf(buf, PAGE_SIZE, "%d\n", !!s);
1725 }
1726
1727 static struct device_attribute dev_attr_hotkey_tablet_mode =
1728 __ATTR(hotkey_tablet_mode, S_IRUGO, hotkey_tablet_mode_show, NULL);
1729
1730 static void hotkey_tablet_mode_notify_change(void)
1731 {
1732 if (tp_features.hotkey_tablet)
1733 sysfs_notify(&tpacpi_pdev->dev.kobj, NULL,
1734 "hotkey_tablet_mode");
1735 }
1736
1737 /* sysfs hotkey report_mode -------------------------------------------- */
1738 static ssize_t hotkey_report_mode_show(struct device *dev,
1739 struct device_attribute *attr,
1740 char *buf)
1741 {
1742 return snprintf(buf, PAGE_SIZE, "%d\n",
1743 (hotkey_report_mode != 0) ? hotkey_report_mode : 1);
1744 }
1745
1746 static struct device_attribute dev_attr_hotkey_report_mode =
1747 __ATTR(hotkey_report_mode, S_IRUGO, hotkey_report_mode_show, NULL);
1748
1749 /* sysfs wakeup reason (pollable) -------------------------------------- */
1750 static ssize_t hotkey_wakeup_reason_show(struct device *dev,
1751 struct device_attribute *attr,
1752 char *buf)
1753 {
1754 return snprintf(buf, PAGE_SIZE, "%d\n", hotkey_wakeup_reason);
1755 }
1756
1757 static struct device_attribute dev_attr_hotkey_wakeup_reason =
1758 __ATTR(wakeup_reason, S_IRUGO, hotkey_wakeup_reason_show, NULL);
1759
1760 static void hotkey_wakeup_reason_notify_change(void)
1761 {
1762 if (tp_features.hotkey_mask)
1763 sysfs_notify(&tpacpi_pdev->dev.kobj, NULL,
1764 "wakeup_reason");
1765 }
1766
1767 /* sysfs wakeup hotunplug_complete (pollable) -------------------------- */
1768 static ssize_t hotkey_wakeup_hotunplug_complete_show(struct device *dev,
1769 struct device_attribute *attr,
1770 char *buf)
1771 {
1772 return snprintf(buf, PAGE_SIZE, "%d\n", hotkey_autosleep_ack);
1773 }
1774
1775 static struct device_attribute dev_attr_hotkey_wakeup_hotunplug_complete =
1776 __ATTR(wakeup_hotunplug_complete, S_IRUGO,
1777 hotkey_wakeup_hotunplug_complete_show, NULL);
1778
1779 static void hotkey_wakeup_hotunplug_complete_notify_change(void)
1780 {
1781 if (tp_features.hotkey_mask)
1782 sysfs_notify(&tpacpi_pdev->dev.kobj, NULL,
1783 "wakeup_hotunplug_complete");
1784 }
1785
1786 /* --------------------------------------------------------------------- */
1787
1788 static struct attribute *hotkey_attributes[] __initdata = {
1789 &dev_attr_hotkey_enable.attr,
1790 &dev_attr_hotkey_bios_enabled.attr,
1791 &dev_attr_hotkey_report_mode.attr,
1792 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
1793 &dev_attr_hotkey_mask.attr,
1794 &dev_attr_hotkey_all_mask.attr,
1795 &dev_attr_hotkey_recommended_mask.attr,
1796 &dev_attr_hotkey_source_mask.attr,
1797 &dev_attr_hotkey_poll_freq.attr,
1798 #endif
1799 };
1800
1801 static struct attribute *hotkey_mask_attributes[] __initdata = {
1802 &dev_attr_hotkey_bios_mask.attr,
1803 #ifndef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
1804 &dev_attr_hotkey_mask.attr,
1805 &dev_attr_hotkey_all_mask.attr,
1806 &dev_attr_hotkey_recommended_mask.attr,
1807 #endif
1808 &dev_attr_hotkey_wakeup_reason.attr,
1809 &dev_attr_hotkey_wakeup_hotunplug_complete.attr,
1810 };
1811
1812 static int __init hotkey_init(struct ibm_init_struct *iibm)
1813 {
1814 /* Requirements for changing the default keymaps:
1815 *
1816 * 1. Many of the keys are mapped to KEY_RESERVED for very
1817 * good reasons. Do not change them unless you have deep
1818 * knowledge on the IBM and Lenovo ThinkPad firmware for
1819 * the various ThinkPad models. The driver behaves
1820 * differently for KEY_RESERVED: such keys have their
1821 * hot key mask *unset* in mask_recommended, and also
1822 * in the initial hot key mask programmed into the
1823 * firmware at driver load time, which means the firm-
1824 * ware may react very differently if you change them to
1825 * something else;
1826 *
1827 * 2. You must be subscribed to the linux-thinkpad and
1828 * ibm-acpi-devel mailing lists, and you should read the
1829 * list archives since 2007 if you want to change the
1830 * keymaps. This requirement exists so that you will
1831 * know the past history of problems with the thinkpad-
1832 * acpi driver keymaps, and also that you will be
1833 * listening to any bug reports;
1834 *
1835 * 3. Do not send thinkpad-acpi specific patches directly to
1836 * for merging, *ever*. Send them to the linux-acpi
1837 * mailinglist for comments. Merging is to be done only
1838 * through acpi-test and the ACPI maintainer.
1839 *
1840 * If the above is too much to ask, don't change the keymap.
1841 * Ask the thinkpad-acpi maintainer to do it, instead.
1842 */
1843 static u16 ibm_keycode_map[] __initdata = {
1844 /* Scan Codes 0x00 to 0x0B: ACPI HKEY FN+F1..F12 */
1845 KEY_FN_F1, KEY_FN_F2, KEY_COFFEE, KEY_SLEEP,
1846 KEY_WLAN, KEY_FN_F6, KEY_SWITCHVIDEOMODE, KEY_FN_F8,
1847 KEY_FN_F9, KEY_FN_F10, KEY_FN_F11, KEY_SUSPEND,
1848
1849 /* Scan codes 0x0C to 0x1F: Other ACPI HKEY hot keys */
1850 KEY_UNKNOWN, /* 0x0C: FN+BACKSPACE */
1851 KEY_UNKNOWN, /* 0x0D: FN+INSERT */
1852 KEY_UNKNOWN, /* 0x0E: FN+DELETE */
1853
1854 /* brightness: firmware always reacts to them, unless
1855 * X.org did some tricks in the radeon BIOS scratch
1856 * registers of *some* models */
1857 KEY_RESERVED, /* 0x0F: FN+HOME (brightness up) */
1858 KEY_RESERVED, /* 0x10: FN+END (brightness down) */
1859
1860 /* Thinklight: firmware always react to it */
1861 KEY_RESERVED, /* 0x11: FN+PGUP (thinklight toggle) */
1862
1863 KEY_UNKNOWN, /* 0x12: FN+PGDOWN */
1864 KEY_ZOOM, /* 0x13: FN+SPACE (zoom) */
1865
1866 /* Volume: firmware always react to it and reprograms
1867 * the built-in *extra* mixer. Never map it to control
1868 * another mixer by default. */
1869 KEY_RESERVED, /* 0x14: VOLUME UP */
1870 KEY_RESERVED, /* 0x15: VOLUME DOWN */
1871 KEY_RESERVED, /* 0x16: MUTE */
1872
1873 KEY_VENDOR, /* 0x17: Thinkpad/AccessIBM/Lenovo */
1874
1875 /* (assignments unknown, please report if found) */
1876 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN,
1877 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN,
1878 };
1879 static u16 lenovo_keycode_map[] __initdata = {
1880 /* Scan Codes 0x00 to 0x0B: ACPI HKEY FN+F1..F12 */
1881 KEY_FN_F1, KEY_COFFEE, KEY_BATTERY, KEY_SLEEP,
1882 KEY_WLAN, KEY_FN_F6, KEY_SWITCHVIDEOMODE, KEY_FN_F8,
1883 KEY_FN_F9, KEY_FN_F10, KEY_FN_F11, KEY_SUSPEND,
1884
1885 /* Scan codes 0x0C to 0x1F: Other ACPI HKEY hot keys */
1886 KEY_UNKNOWN, /* 0x0C: FN+BACKSPACE */
1887 KEY_UNKNOWN, /* 0x0D: FN+INSERT */
1888 KEY_UNKNOWN, /* 0x0E: FN+DELETE */
1889
1890 KEY_RESERVED, /* 0x0F: FN+HOME (brightness up) */
1891 KEY_RESERVED, /* 0x10: FN+END (brightness down) */
1892
1893 KEY_RESERVED, /* 0x11: FN+PGUP (thinklight toggle) */
1894
1895 KEY_UNKNOWN, /* 0x12: FN+PGDOWN */
1896 KEY_ZOOM, /* 0x13: FN+SPACE (zoom) */
1897
1898 /* Volume: z60/z61, T60 (BIOS version?): firmware always
1899 * react to it and reprograms the built-in *extra* mixer.
1900 * Never map it to control another mixer by default.
1901 *
1902 * T60?, T61, R60?, R61: firmware and EC tries to send
1903 * these over the regular keyboard, so these are no-ops,
1904 * but there are still weird bugs re. MUTE, so do not
1905 * change unless you get test reports from all Lenovo
1906 * models. May cause the BIOS to interfere with the
1907 * HDA mixer.
1908 */
1909 KEY_RESERVED, /* 0x14: VOLUME UP */
1910 KEY_RESERVED, /* 0x15: VOLUME DOWN */
1911 KEY_RESERVED, /* 0x16: MUTE */
1912
1913 KEY_VENDOR, /* 0x17: Thinkpad/AccessIBM/Lenovo */
1914
1915 /* (assignments unknown, please report if found) */
1916 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN,
1917 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN,
1918 };
1919
1920 #define TPACPI_HOTKEY_MAP_LEN ARRAY_SIZE(ibm_keycode_map)
1921 #define TPACPI_HOTKEY_MAP_SIZE sizeof(ibm_keycode_map)
1922 #define TPACPI_HOTKEY_MAP_TYPESIZE sizeof(ibm_keycode_map[0])
1923
1924 int res, i;
1925 int status;
1926 int hkeyv;
1927
1928 vdbg_printk(TPACPI_DBG_INIT, "initializing hotkey subdriver\n");
1929
1930 BUG_ON(!tpacpi_inputdev);
1931 BUG_ON(tpacpi_inputdev->open != NULL ||
1932 tpacpi_inputdev->close != NULL);
1933
1934 TPACPI_ACPIHANDLE_INIT(hkey);
1935 mutex_init(&hotkey_mutex);
1936
1937 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
1938 mutex_init(&hotkey_thread_mutex);
1939 mutex_init(&hotkey_thread_data_mutex);
1940 #endif
1941
1942 /* hotkey not supported on 570 */
1943 tp_features.hotkey = hkey_handle != NULL;
1944
1945 vdbg_printk(TPACPI_DBG_INIT, "hotkeys are %s\n",
1946 str_supported(tp_features.hotkey));
1947
1948 if (tp_features.hotkey) {
1949 hotkey_dev_attributes = create_attr_set(13, NULL);
1950 if (!hotkey_dev_attributes)
1951 return -ENOMEM;
1952 res = add_many_to_attr_set(hotkey_dev_attributes,
1953 hotkey_attributes,
1954 ARRAY_SIZE(hotkey_attributes));
1955 if (res)
1956 return res;
1957
1958 /* mask not supported on 570, 600e/x, 770e, 770x, A21e, A2xm/p,
1959 A30, R30, R31, T20-22, X20-21, X22-24. Detected by checking
1960 for HKEY interface version 0x100 */
1961 if (acpi_evalf(hkey_handle, &hkeyv, "MHKV", "qd")) {
1962 if ((hkeyv >> 8) != 1) {
1963 printk(TPACPI_ERR "unknown version of the "
1964 "HKEY interface: 0x%x\n", hkeyv);
1965 printk(TPACPI_ERR "please report this to %s\n",
1966 TPACPI_MAIL);
1967 } else {
1968 /*
1969 * MHKV 0x100 in A31, R40, R40e,
1970 * T4x, X31, and later
1971 */
1972 tp_features.hotkey_mask = 1;
1973 }
1974 }
1975
1976 vdbg_printk(TPACPI_DBG_INIT, "hotkey masks are %s\n",
1977 str_supported(tp_features.hotkey_mask));
1978
1979 if (tp_features.hotkey_mask) {
1980 if (!acpi_evalf(hkey_handle, &hotkey_all_mask,
1981 "MHKA", "qd")) {
1982 printk(TPACPI_ERR
1983 "missing MHKA handler, "
1984 "please report this to %s\n",
1985 TPACPI_MAIL);
1986 /* FN+F12, FN+F4, FN+F3 */
1987 hotkey_all_mask = 0x080cU;
1988 }
1989 }
1990
1991 /* hotkey_source_mask *must* be zero for
1992 * the first hotkey_mask_get */
1993 res = hotkey_status_get(&hotkey_orig_status);
1994 if (!res && tp_features.hotkey_mask) {
1995 res = hotkey_mask_get();
1996 hotkey_orig_mask = hotkey_mask;
1997 if (!res) {
1998 res = add_many_to_attr_set(
1999 hotkey_dev_attributes,
2000 hotkey_mask_attributes,
2001 ARRAY_SIZE(hotkey_mask_attributes));
2002 }
2003 }
2004
2005 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
2006 if (tp_features.hotkey_mask) {
2007 hotkey_source_mask = TPACPI_HKEY_NVRAM_GOOD_MASK
2008 & ~hotkey_all_mask;
2009 } else {
2010 hotkey_source_mask = TPACPI_HKEY_NVRAM_GOOD_MASK;
2011 }
2012
2013 vdbg_printk(TPACPI_DBG_INIT,
2014 "hotkey source mask 0x%08x, polling freq %d\n",
2015 hotkey_source_mask, hotkey_poll_freq);
2016 #endif
2017
2018 /* Not all thinkpads have a hardware radio switch */
2019 if (!res && acpi_evalf(hkey_handle, &status, "WLSW", "qd")) {
2020 tp_features.hotkey_wlsw = 1;
2021 printk(TPACPI_INFO
2022 "radio switch found; radios are %s\n",
2023 enabled(status, 0));
2024 res = add_to_attr_set(hotkey_dev_attributes,
2025 &dev_attr_hotkey_radio_sw.attr);
2026 }
2027
2028 /* For X41t, X60t, X61t Tablets... */
2029 if (!res && acpi_evalf(hkey_handle, &status, "MHKG", "qd")) {
2030 tp_features.hotkey_tablet = 1;
2031 printk(TPACPI_INFO
2032 "possible tablet mode switch found; "
2033 "ThinkPad in %s mode\n",
2034 (status & TP_HOTKEY_TABLET_MASK)?
2035 "tablet" : "laptop");
2036 res = add_to_attr_set(hotkey_dev_attributes,
2037 &dev_attr_hotkey_tablet_mode.attr);
2038 }
2039
2040 if (!res)
2041 res = register_attr_set_with_sysfs(
2042 hotkey_dev_attributes,
2043 &tpacpi_pdev->dev.kobj);
2044 if (res)
2045 return res;
2046
2047 /* Set up key map */
2048
2049 hotkey_keycode_map = kmalloc(TPACPI_HOTKEY_MAP_SIZE,
2050 GFP_KERNEL);
2051 if (!hotkey_keycode_map) {
2052 printk(TPACPI_ERR
2053 "failed to allocate memory for key map\n");
2054 return -ENOMEM;
2055 }
2056
2057 if (thinkpad_id.vendor == PCI_VENDOR_ID_LENOVO) {
2058 dbg_printk(TPACPI_DBG_INIT,
2059 "using Lenovo default hot key map\n");
2060 memcpy(hotkey_keycode_map, &lenovo_keycode_map,
2061 TPACPI_HOTKEY_MAP_SIZE);
2062 } else {
2063 dbg_printk(TPACPI_DBG_INIT,
2064 "using IBM default hot key map\n");
2065 memcpy(hotkey_keycode_map, &ibm_keycode_map,
2066 TPACPI_HOTKEY_MAP_SIZE);
2067 }
2068
2069 set_bit(EV_KEY, tpacpi_inputdev->evbit);
2070 set_bit(EV_MSC, tpacpi_inputdev->evbit);
2071 set_bit(MSC_SCAN, tpacpi_inputdev->mscbit);
2072 tpacpi_inputdev->keycodesize = TPACPI_HOTKEY_MAP_TYPESIZE;
2073 tpacpi_inputdev->keycodemax = TPACPI_HOTKEY_MAP_LEN;
2074 tpacpi_inputdev->keycode = hotkey_keycode_map;
2075 for (i = 0; i < TPACPI_HOTKEY_MAP_LEN; i++) {
2076 if (hotkey_keycode_map[i] != KEY_RESERVED) {
2077 set_bit(hotkey_keycode_map[i],
2078 tpacpi_inputdev->keybit);
2079 } else {
2080 if (i < sizeof(hotkey_reserved_mask)*8)
2081 hotkey_reserved_mask |= 1 << i;
2082 }
2083 }
2084
2085 if (tp_features.hotkey_wlsw) {
2086 set_bit(EV_SW, tpacpi_inputdev->evbit);
2087 set_bit(SW_RADIO, tpacpi_inputdev->swbit);
2088 }
2089 if (tp_features.hotkey_tablet) {
2090 set_bit(EV_SW, tpacpi_inputdev->evbit);
2091 set_bit(SW_TABLET_MODE, tpacpi_inputdev->swbit);
2092 }
2093
2094 dbg_printk(TPACPI_DBG_INIT,
2095 "enabling hot key handling\n");
2096 res = hotkey_status_set(1);
2097 if (res)
2098 return res;
2099 res = hotkey_mask_set(((hotkey_all_mask | hotkey_source_mask)
2100 & ~hotkey_reserved_mask)
2101 | hotkey_orig_mask);
2102 if (res < 0 && res != -ENXIO)
2103 return res;
2104
2105 dbg_printk(TPACPI_DBG_INIT,
2106 "legacy hot key reporting over procfs %s\n",
2107 (hotkey_report_mode < 2) ?
2108 "enabled" : "disabled");
2109
2110 tpacpi_inputdev->open = &hotkey_inputdev_open;
2111 tpacpi_inputdev->close = &hotkey_inputdev_close;
2112
2113 hotkey_poll_setup_safe(1);
2114 tpacpi_input_send_radiosw();
2115 tpacpi_input_send_tabletsw();
2116 }
2117
2118 return (tp_features.hotkey)? 0 : 1;
2119 }
2120
2121 static void hotkey_exit(void)
2122 {
2123 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
2124 hotkey_poll_stop_sync();
2125 #endif
2126
2127 if (tp_features.hotkey) {
2128 dbg_printk(TPACPI_DBG_EXIT,
2129 "restoring original hot key mask\n");
2130 /* no short-circuit boolean operator below! */
2131 if ((hotkey_mask_set(hotkey_orig_mask) |
2132 hotkey_status_set(hotkey_orig_status)) != 0)
2133 printk(TPACPI_ERR
2134 "failed to restore hot key mask "
2135 "to BIOS defaults\n");
2136 }
2137
2138 if (hotkey_dev_attributes) {
2139 delete_attr_set(hotkey_dev_attributes, &tpacpi_pdev->dev.kobj);
2140 hotkey_dev_attributes = NULL;
2141 }
2142 }
2143
2144 static void hotkey_notify(struct ibm_struct *ibm, u32 event)
2145 {
2146 u32 hkey;
2147 unsigned int scancode;
2148 int send_acpi_ev;
2149 int ignore_acpi_ev;
2150 int unk_ev;
2151
2152 if (event != 0x80) {
2153 printk(TPACPI_ERR
2154 "unknown HKEY notification event %d\n", event);
2155 /* forward it to userspace, maybe it knows how to handle it */
2156 acpi_bus_generate_netlink_event(
2157 ibm->acpi->device->pnp.device_class,
2158 ibm->acpi->device->dev.bus_id,
2159 event, 0);
2160 return;
2161 }
2162
2163 while (1) {
2164 if (!acpi_evalf(hkey_handle, &hkey, "MHKP", "d")) {
2165 printk(TPACPI_ERR "failed to retrieve HKEY event\n");
2166 return;
2167 }
2168
2169 if (hkey == 0) {
2170 /* queue empty */
2171 return;
2172 }
2173
2174 send_acpi_ev = 1;
2175 ignore_acpi_ev = 0;
2176 unk_ev = 0;
2177
2178 switch (hkey >> 12) {
2179 case 1:
2180 /* 0x1000-0x1FFF: key presses */
2181 scancode = hkey & 0xfff;
2182 if (scancode > 0 && scancode < 0x21) {
2183 scancode--;
2184 if (!(hotkey_source_mask & (1 << scancode))) {
2185 tpacpi_input_send_key(scancode);
2186 send_acpi_ev = 0;
2187 } else {
2188 ignore_acpi_ev = 1;
2189 }
2190 } else {
2191 unk_ev = 1;
2192 }
2193 break;
2194 case 2:
2195 /* Wakeup reason */
2196 switch (hkey) {
2197 case 0x2304: /* suspend, undock */
2198 case 0x2404: /* hibernation, undock */
2199 hotkey_wakeup_reason = TP_ACPI_WAKEUP_UNDOCK;
2200 ignore_acpi_ev = 1;
2201 break;
2202 case 0x2305: /* suspend, bay eject */
2203 case 0x2405: /* hibernation, bay eject */
2204 hotkey_wakeup_reason = TP_ACPI_WAKEUP_BAYEJ;
2205 ignore_acpi_ev = 1;
2206 break;
2207 default:
2208 unk_ev = 1;
2209 }
2210 if (hotkey_wakeup_reason != TP_ACPI_WAKEUP_NONE) {
2211 printk(TPACPI_INFO
2212 "woke up due to a hot-unplug "
2213 "request...\n");
2214 hotkey_wakeup_reason_notify_change();
2215 }
2216 break;
2217 case 3:
2218 /* bay-related wakeups */
2219 if (hkey == 0x3003) {
2220 hotkey_autosleep_ack = 1;
2221 printk(TPACPI_INFO
2222 "bay ejected\n");
2223 hotkey_wakeup_hotunplug_complete_notify_change();
2224 } else {
2225 unk_ev = 1;
2226 }
2227 break;
2228 case 4:
2229 /* dock-related wakeups */
2230 if (hkey == 0x4003) {
2231 hotkey_autosleep_ack = 1;
2232 printk(TPACPI_INFO
2233 "undocked\n");
2234 hotkey_wakeup_hotunplug_complete_notify_change();
2235 } else {
2236 unk_ev = 1;
2237 }
2238 break;
2239 case 5:
2240 /* 0x5000-0x5FFF: human interface helpers */
2241 switch (hkey) {
2242 case 0x5010: /* Lenovo new BIOS: brightness changed */
2243 case 0x500b: /* X61t: tablet pen inserted into bay */
2244 case 0x500c: /* X61t: tablet pen removed from bay */
2245 break;
2246 case 0x5009: /* X41t-X61t: swivel up (tablet mode) */
2247 case 0x500a: /* X41t-X61t: swivel down (normal mode) */
2248 tpacpi_input_send_tabletsw();
2249 hotkey_tablet_mode_notify_change();
2250 send_acpi_ev = 0;
2251 break;
2252 case 0x5001:
2253 case 0x5002:
2254 /* LID switch events. Do not propagate */
2255 ignore_acpi_ev = 1;
2256 break;
2257 default:
2258 unk_ev = 1;
2259 }
2260 break;
2261 case 7:
2262 /* 0x7000-0x7FFF: misc */
2263 if (tp_features.hotkey_wlsw && hkey == 0x7000) {
2264 tpacpi_input_send_radiosw();
2265 hotkey_radio_sw_notify_change();
2266 send_acpi_ev = 0;
2267 break;
2268 }
2269 /* fallthrough to default */
2270 default:
2271 unk_ev = 1;
2272 }
2273 if (unk_ev) {
2274 printk(TPACPI_NOTICE
2275 "unhandled HKEY event 0x%04x\n", hkey);
2276 }
2277
2278 /* Legacy events */
2279 if (!ignore_acpi_ev &&
2280 (send_acpi_ev || hotkey_report_mode < 2)) {
2281 acpi_bus_generate_proc_event(ibm->acpi->device,
2282 event, hkey);
2283 }
2284
2285 /* netlink events */
2286 if (!ignore_acpi_ev && send_acpi_ev) {
2287 acpi_bus_generate_netlink_event(
2288 ibm->acpi->device->pnp.device_class,
2289 ibm->acpi->device->dev.bus_id,
2290 event, hkey);
2291 }
2292 }
2293 }
2294
2295 static void hotkey_suspend(pm_message_t state)
2296 {
2297 /* Do these on suspend, we get the events on early resume! */
2298 hotkey_wakeup_reason = TP_ACPI_WAKEUP_NONE;
2299 hotkey_autosleep_ack = 0;
2300 }
2301
2302 static void hotkey_resume(void)
2303 {
2304 if (hotkey_mask_get())
2305 printk(TPACPI_ERR
2306 "error while trying to read hot key mask "
2307 "from firmware\n");
2308 tpacpi_input_send_radiosw();
2309 hotkey_radio_sw_notify_change();
2310 hotkey_tablet_mode_notify_change();
2311 hotkey_wakeup_reason_notify_change();
2312 hotkey_wakeup_hotunplug_complete_notify_change();
2313 hotkey_poll_setup_safe(0);
2314 }
2315
2316 /* procfs -------------------------------------------------------------- */
2317 static int hotkey_read(char *p)
2318 {
2319 int res, status;
2320 int len = 0;
2321
2322 if (!tp_features.hotkey) {
2323 len += sprintf(p + len, "status:\t\tnot supported\n");
2324 return len;
2325 }
2326
2327 if (mutex_lock_interruptible(&hotkey_mutex))
2328 return -ERESTARTSYS;
2329 res = hotkey_status_get(&status);
2330 if (!res)
2331 res = hotkey_mask_get();
2332 mutex_unlock(&hotkey_mutex);
2333 if (res)
2334 return res;
2335
2336 len += sprintf(p + len, "status:\t\t%s\n", enabled(status, 0));
2337 if (tp_features.hotkey_mask) {
2338 len += sprintf(p + len, "mask:\t\t0x%08x\n", hotkey_mask);
2339 len += sprintf(p + len,
2340 "commands:\tenable, disable, reset, <mask>\n");
2341 } else {
2342 len += sprintf(p + len, "mask:\t\tnot supported\n");
2343 len += sprintf(p + len, "commands:\tenable, disable, reset\n");
2344 }
2345
2346 return len;
2347 }
2348
2349 static int hotkey_write(char *buf)
2350 {
2351 int res, status;
2352 u32 mask;
2353 char *cmd;
2354
2355 if (!tp_features.hotkey)
2356 return -ENODEV;
2357
2358 if (mutex_lock_interruptible(&hotkey_mutex))
2359 return -ERESTARTSYS;
2360
2361 status = -1;
2362 mask = hotkey_mask;
2363
2364 res = 0;
2365 while ((cmd = next_cmd(&buf))) {
2366 if (strlencmp(cmd, "enable") == 0) {
2367 status = 1;
2368 } else if (strlencmp(cmd, "disable") == 0) {
2369 status = 0;
2370 } else if (strlencmp(cmd, "reset") == 0) {
2371 status = hotkey_orig_status;
2372 mask = hotkey_orig_mask;
2373 } else if (sscanf(cmd, "0x%x", &mask) == 1) {
2374 /* mask set */
2375 } else if (sscanf(cmd, "%x", &mask) == 1) {
2376 /* mask set */
2377 } else {
2378 res = -EINVAL;
2379 goto errexit;
2380 }
2381 }
2382 if (status != -1)
2383 res = hotkey_status_set(status);
2384
2385 if (!res && mask != hotkey_mask)
2386 res = hotkey_mask_set(mask);
2387
2388 errexit:
2389 mutex_unlock(&hotkey_mutex);
2390 return res;
2391 }
2392
2393 static const struct acpi_device_id ibm_htk_device_ids[] = {
2394 {TPACPI_ACPI_HKEY_HID, 0},
2395 {"", 0},
2396 };
2397
2398 static struct tp_acpi_drv_struct ibm_hotkey_acpidriver = {
2399 .hid = ibm_htk_device_ids,
2400 .notify = hotkey_notify,
2401 .handle = &hkey_handle,
2402 .type = ACPI_DEVICE_NOTIFY,
2403 };
2404
2405 static struct ibm_struct hotkey_driver_data = {
2406 .name = "hotkey",
2407 .read = hotkey_read,
2408 .write = hotkey_write,
2409 .exit = hotkey_exit,
2410 .resume = hotkey_resume,
2411 .suspend = hotkey_suspend,
2412 .acpi = &ibm_hotkey_acpidriver,
2413 };
2414
2415 /*************************************************************************
2416 * Bluetooth subdriver
2417 */
2418
2419 enum {
2420 /* ACPI GBDC/SBDC bits */
2421 TP_ACPI_BLUETOOTH_HWPRESENT = 0x01, /* Bluetooth hw available */
2422 TP_ACPI_BLUETOOTH_RADIOSSW = 0x02, /* Bluetooth radio enabled */
2423 TP_ACPI_BLUETOOTH_UNK = 0x04, /* unknown function */
2424 };
2425
2426 static int bluetooth_get_radiosw(void);
2427 static int bluetooth_set_radiosw(int radio_on);
2428
2429 /* sysfs bluetooth enable ---------------------------------------------- */
2430 static ssize_t bluetooth_enable_show(struct device *dev,
2431 struct device_attribute *attr,
2432 char *buf)
2433 {
2434 int status;
2435
2436 status = bluetooth_get_radiosw();
2437 if (status < 0)
2438 return status;
2439
2440 return snprintf(buf, PAGE_SIZE, "%d\n", status ? 1 : 0);
2441 }
2442
2443 static ssize_t bluetooth_enable_store(struct device *dev,
2444 struct device_attribute *attr,
2445 const char *buf, size_t count)
2446 {
2447 unsigned long t;
2448 int res;
2449
2450 if (parse_strtoul(buf, 1, &t))
2451 return -EINVAL;
2452
2453 res = bluetooth_set_radiosw(t);
2454
2455 return (res) ? res : count;
2456 }
2457
2458 static struct device_attribute dev_attr_bluetooth_enable =
2459 __ATTR(bluetooth_enable, S_IWUSR | S_IRUGO,
2460 bluetooth_enable_show, bluetooth_enable_store);
2461
2462 /* --------------------------------------------------------------------- */
2463
2464 static struct attribute *bluetooth_attributes[] = {
2465 &dev_attr_bluetooth_enable.attr,
2466 NULL
2467 };
2468
2469 static const struct attribute_group bluetooth_attr_group = {
2470 .attrs = bluetooth_attributes,
2471 };
2472
2473 static int __init bluetooth_init(struct ibm_init_struct *iibm)
2474 {
2475 int res;
2476 int status = 0;
2477
2478 vdbg_printk(TPACPI_DBG_INIT, "initializing bluetooth subdriver\n");
2479
2480 TPACPI_ACPIHANDLE_INIT(hkey);
2481
2482 /* bluetooth not supported on 570, 600e/x, 770e, 770x, A21e, A2xm/p,
2483 G4x, R30, R31, R40e, R50e, T20-22, X20-21 */
2484 tp_features.bluetooth = hkey_handle &&
2485 acpi_evalf(hkey_handle, &status, "GBDC", "qd");
2486
2487 vdbg_printk(TPACPI_DBG_INIT, "bluetooth is %s, status 0x%02x\n",
2488 str_supported(tp_features.bluetooth),
2489 status);
2490
2491 if (tp_features.bluetooth) {
2492 if (!(status & TP_ACPI_BLUETOOTH_HWPRESENT)) {
2493 /* no bluetooth hardware present in system */
2494 tp_features.bluetooth = 0;
2495 dbg_printk(TPACPI_DBG_INIT,
2496 "bluetooth hardware not installed\n");
2497 } else {
2498 res = sysfs_create_group(&tpacpi_pdev->dev.kobj,
2499 &bluetooth_attr_group);
2500 if (res)
2501 return res;
2502 }
2503 }
2504
2505 return (tp_features.bluetooth)? 0 : 1;
2506 }
2507
2508 static void bluetooth_exit(void)
2509 {
2510 sysfs_remove_group(&tpacpi_pdev->dev.kobj,
2511 &bluetooth_attr_group);
2512 }
2513
2514 static int bluetooth_get_radiosw(void)
2515 {
2516 int status;
2517
2518 if (!tp_features.bluetooth)
2519 return -ENODEV;
2520
2521 if (!acpi_evalf(hkey_handle, &status, "GBDC", "d"))
2522 return -EIO;
2523
2524 return ((status & TP_ACPI_BLUETOOTH_RADIOSSW) != 0);
2525 }
2526
2527 static int bluetooth_set_radiosw(int radio_on)
2528 {
2529 int status;
2530
2531 if (!tp_features.bluetooth)
2532 return -ENODEV;
2533
2534 if (!acpi_evalf(hkey_handle, &status, "GBDC", "d"))
2535 return -EIO;
2536 if (radio_on)
2537 status |= TP_ACPI_BLUETOOTH_RADIOSSW;
2538 else
2539 status &= ~TP_ACPI_BLUETOOTH_RADIOSSW;
2540 if (!acpi_evalf(hkey_handle, NULL, "SBDC", "vd", status))
2541 return -EIO;
2542
2543 return 0;
2544 }
2545
2546 /* procfs -------------------------------------------------------------- */
2547 static int bluetooth_read(char *p)
2548 {
2549 int len = 0;
2550 int status = bluetooth_get_radiosw();
2551
2552 if (!tp_features.bluetooth)
2553 len += sprintf(p + len, "status:\t\tnot supported\n");
2554 else {
2555 len += sprintf(p + len, "status:\t\t%s\n",
2556 (status)? "enabled" : "disabled");
2557 len += sprintf(p + len, "commands:\tenable, disable\n");
2558 }
2559
2560 return len;
2561 }
2562
2563 static int bluetooth_write(char *buf)
2564 {
2565 char *cmd;
2566
2567 if (!tp_features.bluetooth)
2568 return -ENODEV;
2569
2570 while ((cmd = next_cmd(&buf))) {
2571 if (strlencmp(cmd, "enable") == 0) {
2572 bluetooth_set_radiosw(1);
2573 } else if (strlencmp(cmd, "disable") == 0) {
2574 bluetooth_set_radiosw(0);
2575 } else
2576 return -EINVAL;
2577 }
2578
2579 return 0;
2580 }
2581
2582 static struct ibm_struct bluetooth_driver_data = {
2583 .name = "bluetooth",
2584 .read = bluetooth_read,
2585 .write = bluetooth_write,
2586 .exit = bluetooth_exit,
2587 };
2588
2589 /*************************************************************************
2590 * Wan subdriver
2591 */
2592
2593 enum {
2594 /* ACPI GWAN/SWAN bits */
2595 TP_ACPI_WANCARD_HWPRESENT = 0x01, /* Wan hw available */
2596 TP_ACPI_WANCARD_RADIOSSW = 0x02, /* Wan radio enabled */
2597 TP_ACPI_WANCARD_UNK = 0x04, /* unknown function */
2598 };
2599
2600 static int wan_get_radiosw(void);
2601 static int wan_set_radiosw(int radio_on);
2602
2603 /* sysfs wan enable ---------------------------------------------------- */
2604 static ssize_t wan_enable_show(struct device *dev,
2605 struct device_attribute *attr,
2606 char *buf)
2607 {
2608 int status;
2609
2610 status = wan_get_radiosw();
2611 if (status < 0)
2612 return status;
2613
2614 return snprintf(buf, PAGE_SIZE, "%d\n", status ? 1 : 0);
2615 }
2616
2617 static ssize_t wan_enable_store(struct device *dev,
2618 struct device_attribute *attr,
2619 const char *buf, size_t count)
2620 {
2621 unsigned long t;
2622 int res;
2623
2624 if (parse_strtoul(buf, 1, &t))
2625 return -EINVAL;
2626
2627 res = wan_set_radiosw(t);
2628
2629 return (res) ? res : count;
2630 }
2631
2632 static struct device_attribute dev_attr_wan_enable =
2633 __ATTR(wwan_enable, S_IWUSR | S_IRUGO,
2634 wan_enable_show, wan_enable_store);
2635
2636 /* --------------------------------------------------------------------- */
2637
2638 static struct attribute *wan_attributes[] = {
2639 &dev_attr_wan_enable.attr,
2640 NULL
2641 };
2642
2643 static const struct attribute_group wan_attr_group = {
2644 .attrs = wan_attributes,
2645 };
2646
2647 static int __init wan_init(struct ibm_init_struct *iibm)
2648 {
2649 int res;
2650 int status = 0;
2651
2652 vdbg_printk(TPACPI_DBG_INIT, "initializing wan subdriver\n");
2653
2654 TPACPI_ACPIHANDLE_INIT(hkey);
2655
2656 tp_features.wan = hkey_handle &&
2657 acpi_evalf(hkey_handle, &status, "GWAN", "qd");
2658
2659 vdbg_printk(TPACPI_DBG_INIT, "wan is %s, status 0x%02x\n",
2660 str_supported(tp_features.wan),
2661 status);
2662
2663 if (tp_features.wan) {
2664 if (!(status & TP_ACPI_WANCARD_HWPRESENT)) {
2665 /* no wan hardware present in system */
2666 tp_features.wan = 0;
2667 dbg_printk(TPACPI_DBG_INIT,
2668 "wan hardware not installed\n");
2669 } else {
2670 res = sysfs_create_group(&tpacpi_pdev->dev.kobj,
2671 &wan_attr_group);
2672 if (res)
2673 return res;
2674 }
2675 }
2676
2677 return (tp_features.wan)? 0 : 1;
2678 }
2679
2680 static void wan_exit(void)
2681 {
2682 sysfs_remove_group(&tpacpi_pdev->dev.kobj,
2683 &wan_attr_group);
2684 }
2685
2686 static int wan_get_radiosw(void)
2687 {
2688 int status;
2689
2690 if (!tp_features.wan)
2691 return -ENODEV;
2692
2693 if (!acpi_evalf(hkey_handle, &status, "GWAN", "d"))
2694 return -EIO;
2695
2696 return ((status & TP_ACPI_WANCARD_RADIOSSW) != 0);
2697 }
2698
2699 static int wan_set_radiosw(int radio_on)
2700 {
2701 int status;
2702
2703 if (!tp_features.wan)
2704 return -ENODEV;
2705
2706 if (!acpi_evalf(hkey_handle, &status, "GWAN", "d"))
2707 return -EIO;
2708 if (radio_on)
2709 status |= TP_ACPI_WANCARD_RADIOSSW;
2710 else
2711 status &= ~TP_ACPI_WANCARD_RADIOSSW;
2712 if (!acpi_evalf(hkey_handle, NULL, "SWAN", "vd", status))
2713 return -EIO;
2714
2715 return 0;
2716 }
2717
2718 /* procfs -------------------------------------------------------------- */
2719 static int wan_read(char *p)
2720 {
2721 int len = 0;
2722 int status = wan_get_radiosw();
2723
2724 if (!tp_features.wan)
2725 len += sprintf(p + len, "status:\t\tnot supported\n");
2726 else {
2727 len += sprintf(p + len, "status:\t\t%s\n",
2728 (status)? "enabled" : "disabled");
2729 len += sprintf(p + len, "commands:\tenable, disable\n");
2730 }
2731
2732 return len;
2733 }
2734
2735 static int wan_write(char *buf)
2736 {
2737 char *cmd;
2738
2739 if (!tp_features.wan)
2740 return -ENODEV;
2741
2742 while ((cmd = next_cmd(&buf))) {
2743 if (strlencmp(cmd, "enable") == 0) {
2744 wan_set_radiosw(1);
2745 } else if (strlencmp(cmd, "disable") == 0) {
2746 wan_set_radiosw(0);
2747 } else
2748 return -EINVAL;
2749 }
2750
2751 return 0;
2752 }
2753
2754 static struct ibm_struct wan_driver_data = {
2755 .name = "wan",
2756 .read = wan_read,
2757 .write = wan_write,
2758 .exit = wan_exit,
2759 .flags.experimental = 1,
2760 };
2761
2762 /*************************************************************************
2763 * Video subdriver
2764 */
2765
2766 #ifdef CONFIG_THINKPAD_ACPI_VIDEO
2767
2768 enum video_access_mode {
2769 TPACPI_VIDEO_NONE = 0,
2770 TPACPI_VIDEO_570, /* 570 */
2771 TPACPI_VIDEO_770, /* 600e/x, 770e, 770x */
2772 TPACPI_VIDEO_NEW, /* all others */
2773 };
2774
2775 enum { /* video status flags, based on VIDEO_570 */
2776 TP_ACPI_VIDEO_S_LCD = 0x01, /* LCD output enabled */
2777 TP_ACPI_VIDEO_S_CRT = 0x02, /* CRT output enabled */
2778 TP_ACPI_VIDEO_S_DVI = 0x08, /* DVI output enabled */
2779 };
2780
2781 enum { /* TPACPI_VIDEO_570 constants */
2782 TP_ACPI_VIDEO_570_PHSCMD = 0x87, /* unknown magic constant :( */
2783 TP_ACPI_VIDEO_570_PHSMASK = 0x03, /* PHS bits that map to
2784 * video_status_flags */
2785 TP_ACPI_VIDEO_570_PHS2CMD = 0x8b, /* unknown magic constant :( */
2786 TP_ACPI_VIDEO_570_PHS2SET = 0x80, /* unknown magic constant :( */
2787 };
2788
2789 static enum video_access_mode video_supported;
2790 static int video_orig_autosw;
2791
2792 static int video_autosw_get(void);
2793 static int video_autosw_set(int enable);
2794
2795 TPACPI_HANDLE(vid2, root, "\\_SB.PCI0.AGPB.VID"); /* G41 */
2796
2797 static int __init video_init(struct ibm_init_struct *iibm)
2798 {
2799 int ivga;
2800
2801 vdbg_printk(TPACPI_DBG_INIT, "initializing video subdriver\n");
2802
2803 TPACPI_ACPIHANDLE_INIT(vid);
2804 TPACPI_ACPIHANDLE_INIT(vid2);
2805
2806 if (vid2_handle && acpi_evalf(NULL, &ivga, "\\IVGA", "d") && ivga)
2807 /* G41, assume IVGA doesn't change */
2808 vid_handle = vid2_handle;
2809
2810 if (!vid_handle)
2811 /* video switching not supported on R30, R31 */
2812 video_supported = TPACPI_VIDEO_NONE;
2813 else if (acpi_evalf(vid_handle, &video_orig_autosw, "SWIT", "qd"))
2814 /* 570 */
2815 video_supported = TPACPI_VIDEO_570;
2816 else if (acpi_evalf(vid_handle, &video_orig_autosw, "^VADL", "qd"))
2817 /* 600e/x, 770e, 770x */
2818 video_supported = TPACPI_VIDEO_770;
2819 else
2820 /* all others */
2821 video_supported = TPACPI_VIDEO_NEW;
2822
2823 vdbg_printk(TPACPI_DBG_INIT, "video is %s, mode %d\n",
2824 str_supported(video_supported != TPACPI_VIDEO_NONE),
2825 video_supported);
2826
2827 return (video_supported != TPACPI_VIDEO_NONE)? 0 : 1;
2828 }
2829
2830 static void video_exit(void)
2831 {
2832 dbg_printk(TPACPI_DBG_EXIT,
2833 "restoring original video autoswitch mode\n");
2834 if (video_autosw_set(video_orig_autosw))
2835 printk(TPACPI_ERR "error while trying to restore original "
2836 "video autoswitch mode\n");
2837 }
2838
2839 static int video_outputsw_get(void)
2840 {
2841 int status = 0;
2842 int i;
2843
2844 switch (video_supported) {
2845 case TPACPI_VIDEO_570:
2846 if (!acpi_evalf(NULL, &i, "\\_SB.PHS", "dd",
2847 TP_ACPI_VIDEO_570_PHSCMD))
2848 return -EIO;
2849 status = i & TP_ACPI_VIDEO_570_PHSMASK;
2850 break;
2851 case TPACPI_VIDEO_770:
2852 if (!acpi_evalf(NULL, &i, "\\VCDL", "d"))
2853 return -EIO;
2854 if (i)
2855 status |= TP_ACPI_VIDEO_S_LCD;
2856 if (!acpi_evalf(NULL, &i, "\\VCDC", "d"))
2857 return -EIO;
2858 if (i)
2859 status |= TP_ACPI_VIDEO_S_CRT;
2860 break;
2861 case TPACPI_VIDEO_NEW:
2862 if (!acpi_evalf(NULL, NULL, "\\VUPS", "vd", 1) ||
2863 !acpi_evalf(NULL, &i, "\\VCDC", "d"))
2864 return -EIO;
2865 if (i)
2866 status |= TP_ACPI_VIDEO_S_CRT;
2867
2868 if (!acpi_evalf(NULL, NULL, "\\VUPS", "vd", 0) ||
2869 !acpi_evalf(NULL, &i, "\\VCDL", "d"))
2870 return -EIO;
2871 if (i)
2872 status |= TP_ACPI_VIDEO_S_LCD;
2873 if (!acpi_evalf(NULL, &i, "\\VCDD", "d"))
2874 return -EIO;
2875 if (i)
2876 status |= TP_ACPI_VIDEO_S_DVI;
2877 break;
2878 default:
2879 return -ENOSYS;
2880 }
2881
2882 return status;
2883 }
2884
2885 static int video_outputsw_set(int status)
2886 {
2887 int autosw;
2888 int res = 0;
2889
2890 switch (video_supported) {
2891 case TPACPI_VIDEO_570:
2892 res = acpi_evalf(NULL, NULL,
2893 "\\_SB.PHS2", "vdd",
2894 TP_ACPI_VIDEO_570_PHS2CMD,
2895 status | TP_ACPI_VIDEO_570_PHS2SET);
2896 break;
2897 case TPACPI_VIDEO_770:
2898 autosw = video_autosw_get();
2899 if (autosw < 0)
2900 return autosw;
2901
2902 res = video_autosw_set(1);
2903 if (res)
2904 return res;
2905 res = acpi_evalf(vid_handle, NULL,
2906 "ASWT", "vdd", status * 0x100, 0);
2907 if (!autosw && video_autosw_set(autosw)) {
2908 printk(TPACPI_ERR
2909 "video auto-switch left enabled due to error\n");
2910 return -EIO;
2911 }
2912 break;
2913 case TPACPI_VIDEO_NEW:
2914 res = acpi_evalf(NULL, NULL, "\\VUPS", "vd", 0x80) &&
2915 acpi_evalf(NULL, NULL, "\\VSDS", "vdd", status, 1);
2916 break;
2917 default:
2918 return -ENOSYS;
2919 }
2920
2921 return (res)? 0 : -EIO;
2922 }
2923
2924 static int video_autosw_get(void)
2925 {
2926 int autosw = 0;
2927
2928 switch (video_supported) {
2929 case TPACPI_VIDEO_570:
2930 if (!acpi_evalf(vid_handle, &autosw, "SWIT", "d"))
2931 return -EIO;
2932 break;
2933 case TPACPI_VIDEO_770:
2934 case TPACPI_VIDEO_NEW:
2935 if (!acpi_evalf(vid_handle, &autosw, "^VDEE", "d"))
2936 return -EIO;
2937 break;
2938 default:
2939 return -ENOSYS;
2940 }
2941
2942 return autosw & 1;
2943 }
2944
2945 static int video_autosw_set(int enable)
2946 {
2947 if (!acpi_evalf(vid_handle, NULL, "_DOS", "vd", (enable)? 1 : 0))
2948 return -EIO;
2949 return 0;
2950 }
2951
2952 static int video_outputsw_cycle(void)
2953 {
2954 int autosw = video_autosw_get();
2955 int res;
2956
2957 if (autosw < 0)
2958 return autosw;
2959
2960 switch (video_supported) {
2961 case TPACPI_VIDEO_570:
2962 res = video_autosw_set(1);
2963 if (res)
2964 return res;
2965 res = acpi_evalf(ec_handle, NULL, "_Q16", "v");
2966 break;
2967 case TPACPI_VIDEO_770:
2968 case TPACPI_VIDEO_NEW:
2969 res = video_autosw_set(1);
2970 if (res)
2971 return res;
2972 res = acpi_evalf(vid_handle, NULL, "VSWT", "v");
2973 break;
2974 default:
2975 return -ENOSYS;
2976 }
2977 if (!autosw && video_autosw_set(autosw)) {
2978 printk(TPACPI_ERR
2979 "video auto-switch left enabled due to error\n");
2980 return -EIO;
2981 }
2982
2983 return (res)? 0 : -EIO;
2984 }
2985
2986 static int video_expand_toggle(void)
2987 {
2988 switch (video_supported) {
2989 case TPACPI_VIDEO_570:
2990 return acpi_evalf(ec_handle, NULL, "_Q17", "v")?
2991 0 : -EIO;
2992 case TPACPI_VIDEO_770:
2993 return acpi_evalf(vid_handle, NULL, "VEXP", "v")?
2994 0 : -EIO;
2995 case TPACPI_VIDEO_NEW:
2996 return acpi_evalf(NULL, NULL, "\\VEXP", "v")?
2997 0 : -EIO;
2998 default:
2999 return -ENOSYS;
3000 }
3001 /* not reached */
3002 }
3003
3004 static int video_read(char *p)
3005 {
3006 int status, autosw;
3007 int len = 0;
3008
3009 if (video_supported == TPACPI_VIDEO_NONE) {
3010 len += sprintf(p + len, "status:\t\tnot supported\n");
3011 return len;
3012 }
3013
3014 status = video_outputsw_get();
3015 if (status < 0)
3016 return status;
3017
3018 autosw = video_autosw_get();
3019 if (autosw < 0)
3020 return autosw;
3021
3022 len += sprintf(p + len, "status:\t\tsupported\n");
3023 len += sprintf(p + len, "lcd:\t\t%s\n", enabled(status, 0));
3024 len += sprintf(p + len, "crt:\t\t%s\n", enabled(status, 1));
3025 if (video_supported == TPACPI_VIDEO_NEW)
3026 len += sprintf(p + len, "dvi:\t\t%s\n", enabled(status, 3));
3027 len += sprintf(p + len, "auto:\t\t%s\n", enabled(autosw, 0));
3028 len += sprintf(p + len, "commands:\tlcd_enable, lcd_disable\n");
3029 len += sprintf(p + len, "commands:\tcrt_enable, crt_disable\n");
3030 if (video_supported == TPACPI_VIDEO_NEW)
3031 len += sprintf(p + len, "commands:\tdvi_enable, dvi_disable\n");
3032 len += sprintf(p + len, "commands:\tauto_enable, auto_disable\n");
3033 len += sprintf(p + len, "commands:\tvideo_switch, expand_toggle\n");
3034
3035 return len;
3036 }
3037
3038 static int video_write(char *buf)
3039 {
3040 char *cmd;
3041 int enable, disable, status;
3042 int res;
3043
3044 if (video_supported == TPACPI_VIDEO_NONE)
3045 return -ENODEV;
3046
3047 enable = 0;
3048 disable = 0;
3049
3050 while ((cmd = next_cmd(&buf))) {
3051 if (strlencmp(cmd, "lcd_enable") == 0) {
3052 enable |= TP_ACPI_VIDEO_S_LCD;
3053 } else if (strlencmp(cmd, "lcd_disable") == 0) {
3054 disable |= TP_ACPI_VIDEO_S_LCD;
3055 } else if (strlencmp(cmd, "crt_enable") == 0) {
3056 enable |= TP_ACPI_VIDEO_S_CRT;
3057 } else if (strlencmp(cmd, "crt_disable") == 0) {
3058 disable |= TP_ACPI_VIDEO_S_CRT;
3059 } else if (video_supported == TPACPI_VIDEO_NEW &&
3060 strlencmp(cmd, "dvi_enable") == 0) {
3061 enable |= TP_ACPI_VIDEO_S_DVI;
3062 } else if (video_supported == TPACPI_VIDEO_NEW &&
3063 strlencmp(cmd, "dvi_disable") == 0) {
3064 disable |= TP_ACPI_VIDEO_S_DVI;
3065 } else if (strlencmp(cmd, "auto_enable") == 0) {
3066 res = video_autosw_set(1);
3067 if (res)
3068 return res;
3069 } else if (strlencmp(cmd, "auto_disable") == 0) {
3070 res = video_autosw_set(0);
3071 if (res)
3072 return res;
3073 } else if (strlencmp(cmd, "video_switch") == 0) {
3074 res = video_outputsw_cycle();
3075 if (res)
3076 return res;
3077 } else if (strlencmp(cmd, "expand_toggle") == 0) {
3078 res = video_expand_toggle();
3079 if (res)
3080 return res;
3081 } else
3082 return -EINVAL;
3083 }
3084
3085 if (enable || disable) {
3086 status = video_outputsw_get();
3087 if (status < 0)
3088 return status;
3089 res = video_outputsw_set((status & ~disable) | enable);
3090 if (res)
3091 return res;
3092 }
3093
3094 return 0;
3095 }
3096
3097 static struct ibm_struct video_driver_data = {
3098 .name = "video",
3099 .read = video_read,
3100 .write = video_write,
3101 .exit = video_exit,
3102 };
3103
3104 #endif /* CONFIG_THINKPAD_ACPI_VIDEO */
3105
3106 /*************************************************************************
3107 * Light (thinklight) subdriver
3108 */
3109
3110 TPACPI_HANDLE(lght, root, "\\LGHT"); /* A21e, A2xm/p, T20-22, X20-21 */
3111 TPACPI_HANDLE(ledb, ec, "LEDB"); /* G4x */
3112
3113 static int __init light_init(struct ibm_init_struct *iibm)
3114 {
3115 vdbg_printk(TPACPI_DBG_INIT, "initializing light subdriver\n");
3116
3117 TPACPI_ACPIHANDLE_INIT(ledb);
3118 TPACPI_ACPIHANDLE_INIT(lght);
3119 TPACPI_ACPIHANDLE_INIT(cmos);
3120
3121 /* light not supported on 570, 600e/x, 770e, 770x, G4x, R30, R31 */
3122 tp_features.light = (cmos_handle || lght_handle) && !ledb_handle;
3123
3124 if (tp_features.light)
3125 /* light status not supported on
3126 570, 600e/x, 770e, 770x, G4x, R30, R31, R32, X20 */
3127 tp_features.light_status =
3128 acpi_evalf(ec_handle, NULL, "KBLT", "qv");
3129
3130 vdbg_printk(TPACPI_DBG_INIT, "light is %s\n",
3131 str_supported(tp_features.light));
3132
3133 return (tp_features.light)? 0 : 1;
3134 }
3135
3136 static int light_read(char *p)
3137 {
3138 int len = 0;
3139 int status = 0;
3140
3141 if (!tp_features.light) {
3142 len += sprintf(p + len, "status:\t\tnot supported\n");
3143 } else if (!tp_features.light_status) {
3144 len += sprintf(p + len, "status:\t\tunknown\n");
3145 len += sprintf(p + len, "commands:\ton, off\n");
3146 } else {
3147 if (!acpi_evalf(ec_handle, &status, "KBLT", "d"))
3148 return -EIO;
3149 len += sprintf(p + len, "status:\t\t%s\n", onoff(status, 0));
3150 len += sprintf(p + len, "commands:\ton, off\n");
3151 }
3152
3153 return len;
3154 }
3155
3156 static int light_write(char *buf)
3157 {
3158 int cmos_cmd, lght_cmd;
3159 char *cmd;
3160 int success;
3161
3162 if (!tp_features.light)
3163 return -ENODEV;
3164
3165 while ((cmd = next_cmd(&buf))) {
3166 if (strlencmp(cmd, "on") == 0) {
3167 cmos_cmd = 0x0c;
3168 lght_cmd = 1;
3169 } else if (strlencmp(cmd, "off") == 0) {
3170 cmos_cmd = 0x0d;
3171 lght_cmd = 0;
3172 } else
3173 return -EINVAL;
3174
3175 success = cmos_handle ?
3176 acpi_evalf(cmos_handle, NULL, NULL, "vd", cmos_cmd) :
3177 acpi_evalf(lght_handle, NULL, NULL, "vd", lght_cmd);
3178 if (!success)
3179 return -EIO;
3180 }
3181
3182 return 0;
3183 }
3184
3185 static struct ibm_struct light_driver_data = {
3186 .name = "light",
3187 .read = light_read,
3188 .write = light_write,
3189 };
3190
3191 /*************************************************************************
3192 * Dock subdriver
3193 */
3194
3195 #ifdef CONFIG_THINKPAD_ACPI_DOCK
3196
3197 static void dock_notify(struct ibm_struct *ibm, u32 event);
3198 static int dock_read(char *p);
3199 static int dock_write(char *buf);
3200
3201 TPACPI_HANDLE(dock, root, "\\_SB.GDCK", /* X30, X31, X40 */
3202 "\\_SB.PCI0.DOCK", /* 600e/x,770e,770x,A2xm/p,T20-22,X20-21 */
3203 "\\_SB.PCI0.PCI1.DOCK", /* all others */
3204 "\\_SB.PCI.ISA.SLCE", /* 570 */
3205 ); /* A21e,G4x,R30,R31,R32,R40,R40e,R50e */
3206
3207 /* don't list other alternatives as we install a notify handler on the 570 */
3208 TPACPI_HANDLE(pci, root, "\\_SB.PCI"); /* 570 */
3209
3210 static const struct acpi_device_id ibm_pci_device_ids[] = {
3211 {PCI_ROOT_HID_STRING, 0},
3212 {"", 0},
3213 };
3214
3215 static struct tp_acpi_drv_struct ibm_dock_acpidriver[2] = {
3216 {
3217 .notify = dock_notify,
3218 .handle = &dock_handle,
3219 .type = ACPI_SYSTEM_NOTIFY,
3220 },
3221 {
3222 /* THIS ONE MUST NEVER BE USED FOR DRIVER AUTOLOADING.
3223 * We just use it to get notifications of dock hotplug
3224 * in very old thinkpads */
3225 .hid = ibm_pci_device_ids,
3226 .notify = dock_notify,
3227 .handle = &pci_handle,
3228 .type = ACPI_SYSTEM_NOTIFY,
3229 },
3230 };
3231
3232 static struct ibm_struct dock_driver_data[2] = {
3233 {
3234 .name = "dock",
3235 .read = dock_read,
3236 .write = dock_write,
3237 .acpi = &ibm_dock_acpidriver[0],
3238 },
3239 {
3240 .name = "dock",
3241 .acpi = &ibm_dock_acpidriver[1],
3242 },
3243 };
3244
3245 #define dock_docked() (_sta(dock_handle) & 1)
3246
3247 static int __init dock_init(struct ibm_init_struct *iibm)
3248 {
3249 vdbg_printk(TPACPI_DBG_INIT, "initializing dock subdriver\n");
3250
3251 TPACPI_ACPIHANDLE_INIT(dock);
3252
3253 vdbg_printk(TPACPI_DBG_INIT, "dock is %s\n",
3254 str_supported(dock_handle != NULL));
3255
3256 return (dock_handle)? 0 : 1;
3257 }
3258
3259 static int __init dock_init2(struct ibm_init_struct *iibm)
3260 {
3261 int dock2_needed;
3262
3263 vdbg_printk(TPACPI_DBG_INIT, "initializing dock subdriver part 2\n");
3264
3265 if (dock_driver_data[0].flags.acpi_driver_registered &&
3266 dock_driver_data[0].flags.acpi_notify_installed) {
3267 TPACPI_ACPIHANDLE_INIT(pci);
3268 dock2_needed = (pci_handle != NULL);
3269 vdbg_printk(TPACPI_DBG_INIT,
3270 "dock PCI handler for the TP 570 is %s\n",
3271 str_supported(dock2_needed));
3272 } else {
3273 vdbg_printk(TPACPI_DBG_INIT,
3274 "dock subdriver part 2 not required\n");
3275 dock2_needed = 0;
3276 }
3277
3278 return (dock2_needed)? 0 : 1;
3279 }
3280
3281 static void dock_notify(struct ibm_struct *ibm, u32 event)
3282 {
3283 int docked = dock_docked();
3284 int pci = ibm->acpi->hid && ibm->acpi->device &&
3285 acpi_match_device_ids(ibm->acpi->device, ibm_pci_device_ids);
3286 int data;
3287
3288 if (event == 1 && !pci) /* 570 */
3289 data = 1; /* button */
3290 else if (event == 1 && pci) /* 570 */
3291 data = 3; /* dock */
3292 else if (event == 3 && docked)
3293 data = 1; /* button */
3294 else if (event == 3 && !docked)
3295 data = 2; /* undock */
3296 else if (event == 0 && docked)
3297 data = 3; /* dock */
3298 else {
3299 printk(TPACPI_ERR "unknown dock event %d, status %d\n",
3300 event, _sta(dock_handle));
3301 data = 0; /* unknown */
3302 }
3303 acpi_bus_generate_proc_event(ibm->acpi->device, event, data);
3304 acpi_bus_generate_netlink_event(ibm->acpi->device->pnp.device_class,
3305 ibm->acpi->device->dev.bus_id,
3306 event, data);
3307 }
3308
3309 static int dock_read(char *p)
3310 {
3311 int len = 0;
3312 int docked = dock_docked();
3313
3314 if (!dock_handle)
3315 len += sprintf(p + len, "status:\t\tnot supported\n");
3316 else if (!docked)
3317 len += sprintf(p + len, "status:\t\tundocked\n");
3318 else {
3319 len += sprintf(p + len, "status:\t\tdocked\n");
3320 len += sprintf(p + len, "commands:\tdock, undock\n");
3321 }
3322
3323 return len;
3324 }
3325
3326 static int dock_write(char *buf)
3327 {
3328 char *cmd;
3329
3330 if (!dock_docked())
3331 return -ENODEV;
3332
3333 while ((cmd = next_cmd(&buf))) {
3334 if (strlencmp(cmd, "undock") == 0) {
3335 if (!acpi_evalf(dock_handle, NULL, "_DCK", "vd", 0) ||
3336 !acpi_evalf(dock_handle, NULL, "_EJ0", "vd", 1))
3337 return -EIO;
3338 } else if (strlencmp(cmd, "dock") == 0) {
3339 if (!acpi_evalf(dock_handle, NULL, "_DCK", "vd", 1))
3340 return -EIO;
3341 } else
3342 return -EINVAL;
3343 }
3344
3345 return 0;
3346 }
3347
3348 #endif /* CONFIG_THINKPAD_ACPI_DOCK */
3349
3350 /*************************************************************************
3351 * Bay subdriver
3352 */
3353
3354 #ifdef CONFIG_THINKPAD_ACPI_BAY
3355
3356 TPACPI_HANDLE(bay, root, "\\_SB.PCI.IDE.SECN.MAST", /* 570 */
3357 "\\_SB.PCI0.IDE0.IDES.IDSM", /* 600e/x, 770e, 770x */
3358 "\\_SB.PCI0.SATA.SCND.MSTR", /* T60, X60, Z60 */
3359 "\\_SB.PCI0.IDE0.SCND.MSTR", /* all others */
3360 ); /* A21e, R30, R31 */
3361 TPACPI_HANDLE(bay_ej, bay, "_EJ3", /* 600e/x, A2xm/p, A3x */
3362 "_EJ0", /* all others */
3363 ); /* 570,A21e,G4x,R30,R31,R32,R40e,R50e */
3364 TPACPI_HANDLE(bay2, root, "\\_SB.PCI0.IDE0.PRIM.SLAV", /* A3x, R32 */
3365 "\\_SB.PCI0.IDE0.IDEP.IDPS", /* 600e/x, 770e, 770x */
3366 ); /* all others */
3367 TPACPI_HANDLE(bay2_ej, bay2, "_EJ3", /* 600e/x, 770e, A3x */
3368 "_EJ0", /* 770x */
3369 ); /* all others */
3370
3371 static int __init bay_init(struct ibm_init_struct *iibm)
3372 {
3373 vdbg_printk(TPACPI_DBG_INIT, "initializing bay subdriver\n");
3374
3375 TPACPI_ACPIHANDLE_INIT(bay);
3376 if (bay_handle)
3377 TPACPI_ACPIHANDLE_INIT(bay_ej);
3378 TPACPI_ACPIHANDLE_INIT(bay2);
3379 if (bay2_handle)
3380 TPACPI_ACPIHANDLE_INIT(bay2_ej);
3381
3382 tp_features.bay_status = bay_handle &&
3383 acpi_evalf(bay_handle, NULL, "_STA", "qv");
3384 tp_features.bay_status2 = bay2_handle &&
3385 acpi_evalf(bay2_handle, NULL, "_STA", "qv");
3386
3387 tp_features.bay_eject = bay_handle && bay_ej_handle &&
3388 (strlencmp(bay_ej_path, "_EJ0") == 0 || experimental);
3389 tp_features.bay_eject2 = bay2_handle && bay2_ej_handle &&
3390 (strlencmp(bay2_ej_path, "_EJ0") == 0 || experimental);
3391
3392 vdbg_printk(TPACPI_DBG_INIT,
3393 "bay 1: status %s, eject %s; bay 2: status %s, eject %s\n",
3394 str_supported(tp_features.bay_status),
3395 str_supported(tp_features.bay_eject),
3396 str_supported(tp_features.bay_status2),
3397 str_supported(tp_features.bay_eject2));
3398
3399 return (tp_features.bay_status || tp_features.bay_eject ||
3400 tp_features.bay_status2 || tp_features.bay_eject2)? 0 : 1;
3401 }
3402
3403 static void bay_notify(struct ibm_struct *ibm, u32 event)
3404 {
3405 acpi_bus_generate_proc_event(ibm->acpi->device, event, 0);
3406 acpi_bus_generate_netlink_event(ibm->acpi->device->pnp.device_class,
3407 ibm->acpi->device->dev.bus_id,
3408 event, 0);
3409 }
3410
3411 #define bay_occupied(b) (_sta(b##_handle) & 1)
3412
3413 static int bay_read(char *p)
3414 {
3415 int len = 0;
3416 int occupied = bay_occupied(bay);
3417 int occupied2 = bay_occupied(bay2);
3418 int eject, eject2;
3419
3420 len += sprintf(p + len, "status:\t\t%s\n",
3421 tp_features.bay_status ?
3422 (occupied ? "occupied" : "unoccupied") :
3423 "not supported");
3424 if (tp_features.bay_status2)
3425 len += sprintf(p + len, "status2:\t%s\n", occupied2 ?
3426 "occupied" : "unoccupied");
3427
3428 eject = tp_features.bay_eject && occupied;
3429 eject2 = tp_features.bay_eject2 && occupied2;
3430
3431 if (eject && eject2)
3432 len += sprintf(p + len, "commands:\teject, eject2\n");
3433 else if (eject)
3434 len += sprintf(p + len, "commands:\teject\n");
3435 else if (eject2)
3436 len += sprintf(p + len, "commands:\teject2\n");
3437
3438 return len;
3439 }
3440
3441 static int bay_write(char *buf)
3442 {
3443 char *cmd;
3444
3445 if (!tp_features.bay_eject && !tp_features.bay_eject2)
3446 return -ENODEV;
3447
3448 while ((cmd = next_cmd(&buf))) {
3449 if (tp_features.bay_eject && strlencmp(cmd, "eject") == 0) {
3450 if (!acpi_evalf(bay_ej_handle, NULL, NULL, "vd", 1))
3451 return -EIO;
3452 } else if (tp_features.bay_eject2 &&
3453 strlencmp(cmd, "eject2") == 0) {
3454 if (!acpi_evalf(bay2_ej_handle, NULL, NULL, "vd", 1))
3455 return -EIO;
3456 } else
3457 return -EINVAL;
3458 }
3459
3460 return 0;
3461 }
3462
3463 static struct tp_acpi_drv_struct ibm_bay_acpidriver = {
3464 .notify = bay_notify,
3465 .handle = &bay_handle,
3466 .type = ACPI_SYSTEM_NOTIFY,
3467 };
3468
3469 static struct ibm_struct bay_driver_data = {
3470 .name = "bay",
3471 .read = bay_read,
3472 .write = bay_write,
3473 .acpi = &ibm_bay_acpidriver,
3474 };
3475
3476 #endif /* CONFIG_THINKPAD_ACPI_BAY */
3477
3478 /*************************************************************************
3479 * CMOS subdriver
3480 */
3481
3482 /* sysfs cmos_command -------------------------------------------------- */
3483 static ssize_t cmos_command_store(struct device *dev,
3484 struct device_attribute *attr,
3485 const char *buf, size_t count)
3486 {
3487 unsigned long cmos_cmd;
3488 int res;
3489
3490 if (parse_strtoul(buf, 21, &cmos_cmd))
3491 return -EINVAL;
3492
3493 res = issue_thinkpad_cmos_command(cmos_cmd);
3494 return (res)? res : count;
3495 }
3496
3497 static struct device_attribute dev_attr_cmos_command =
3498 __ATTR(cmos_command, S_IWUSR, NULL, cmos_command_store);
3499
3500 /* --------------------------------------------------------------------- */
3501
3502 static int __init cmos_init(struct ibm_init_struct *iibm)
3503 {
3504 int res;
3505
3506 vdbg_printk(TPACPI_DBG_INIT,
3507 "initializing cmos commands subdriver\n");
3508
3509 TPACPI_ACPIHANDLE_INIT(cmos);
3510
3511 vdbg_printk(TPACPI_DBG_INIT, "cmos commands are %s\n",
3512 str_supported(cmos_handle != NULL));
3513
3514 res = device_create_file(&tpacpi_pdev->dev, &dev_attr_cmos_command);
3515 if (res)
3516 return res;
3517
3518 return (cmos_handle)? 0 : 1;
3519 }
3520
3521 static void cmos_exit(void)
3522 {
3523 device_remove_file(&tpacpi_pdev->dev, &dev_attr_cmos_command);
3524 }
3525
3526 static int cmos_read(char *p)
3527 {
3528 int len = 0;
3529
3530 /* cmos not supported on 570, 600e/x, 770e, 770x, A21e, A2xm/p,
3531 R30, R31, T20-22, X20-21 */
3532 if (!cmos_handle)
3533 len += sprintf(p + len, "status:\t\tnot supported\n");
3534 else {
3535 len += sprintf(p + len, "status:\t\tsupported\n");
3536 len += sprintf(p + len, "commands:\t<cmd> (<cmd> is 0-21)\n");
3537 }
3538
3539 return len;
3540 }
3541
3542 static int cmos_write(char *buf)
3543 {
3544 char *cmd;
3545 int cmos_cmd, res;
3546
3547 while ((cmd = next_cmd(&buf))) {
3548 if (sscanf(cmd, "%u", &cmos_cmd) == 1 &&
3549 cmos_cmd >= 0 && cmos_cmd <= 21) {
3550 /* cmos_cmd set */
3551 } else
3552 return -EINVAL;
3553
3554 res = issue_thinkpad_cmos_command(cmos_cmd);
3555 if (res)
3556 return res;
3557 }
3558
3559 return 0;
3560 }
3561
3562 static struct ibm_struct cmos_driver_data = {
3563 .name = "cmos",
3564 .read = cmos_read,
3565 .write = cmos_write,
3566 .exit = cmos_exit,
3567 };
3568
3569 /*************************************************************************
3570 * LED subdriver
3571 */
3572
3573 enum led_access_mode {
3574 TPACPI_LED_NONE = 0,
3575 TPACPI_LED_570, /* 570 */
3576 TPACPI_LED_OLD, /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20-21 */
3577 TPACPI_LED_NEW, /* all others */
3578 };
3579
3580 enum { /* For TPACPI_LED_OLD */
3581 TPACPI_LED_EC_HLCL = 0x0c, /* EC reg to get led to power on */
3582 TPACPI_LED_EC_HLBL = 0x0d, /* EC reg to blink a lit led */
3583 TPACPI_LED_EC_HLMS = 0x0e, /* EC reg to select led to command */
3584 };
3585
3586 static enum led_access_mode led_supported;
3587
3588 TPACPI_HANDLE(led, ec, "SLED", /* 570 */
3589 "SYSL", /* 600e/x, 770e, 770x, A21e, A2xm/p, */
3590 /* T20-22, X20-21 */
3591 "LED", /* all others */
3592 ); /* R30, R31 */
3593
3594 static int __init led_init(struct ibm_init_struct *iibm)
3595 {
3596 vdbg_printk(TPACPI_DBG_INIT, "initializing LED subdriver\n");
3597
3598 TPACPI_ACPIHANDLE_INIT(led);
3599
3600 if (!led_handle)
3601 /* led not supported on R30, R31 */
3602 led_supported = TPACPI_LED_NONE;
3603 else if (strlencmp(led_path, "SLED") == 0)
3604 /* 570 */
3605 led_supported = TPACPI_LED_570;
3606 else if (strlencmp(led_path, "SYSL") == 0)
3607 /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20-21 */
3608 led_supported = TPACPI_LED_OLD;
3609 else
3610 /* all others */
3611 led_supported = TPACPI_LED_NEW;
3612
3613 vdbg_printk(TPACPI_DBG_INIT, "LED commands are %s, mode %d\n",
3614 str_supported(led_supported), led_supported);
3615
3616 return (led_supported != TPACPI_LED_NONE)? 0 : 1;
3617 }
3618
3619 #define led_status(s) ((s) == 0 ? "off" : ((s) == 1 ? "on" : "blinking"))
3620
3621 static int led_read(char *p)
3622 {
3623 int len = 0;
3624
3625 if (!led_supported) {
3626 len += sprintf(p + len, "status:\t\tnot supported\n");
3627 return len;
3628 }
3629 len += sprintf(p + len, "status:\t\tsupported\n");
3630
3631 if (led_supported == TPACPI_LED_570) {
3632 /* 570 */
3633 int i, status;
3634 for (i = 0; i < 8; i++) {
3635 if (!acpi_evalf(ec_handle,
3636 &status, "GLED", "dd", 1 << i))
3637 return -EIO;
3638 len += sprintf(p + len, "%d:\t\t%s\n",
3639 i, led_status(status));
3640 }
3641 }
3642
3643 len += sprintf(p + len, "commands:\t"
3644 "<led> on, <led> off, <led> blink (<led> is 0-7)\n");
3645
3646 return len;
3647 }
3648
3649 /* off, on, blink */
3650 static const int led_sled_arg1[] = { 0, 1, 3 };
3651 static const int led_exp_hlbl[] = { 0, 0, 1 }; /* led# * */
3652 static const int led_exp_hlcl[] = { 0, 1, 1 }; /* led# * */
3653 static const int led_led_arg1[] = { 0, 0x80, 0xc0 };
3654
3655 static int led_write(char *buf)
3656 {
3657 char *cmd;
3658 int led, ind, ret;
3659
3660 if (!led_supported)
3661 return -ENODEV;
3662
3663 while ((cmd = next_cmd(&buf))) {
3664 if (sscanf(cmd, "%d", &led) != 1 || led < 0 || led > 7)
3665 return -EINVAL;
3666
3667 if (strstr(cmd, "off")) {
3668 ind = 0;
3669 } else if (strstr(cmd, "on")) {
3670 ind = 1;
3671 } else if (strstr(cmd, "blink")) {
3672 ind = 2;
3673 } else
3674 return -EINVAL;
3675
3676 if (led_supported == TPACPI_LED_570) {
3677 /* 570 */
3678