projects / deliverable / linux.git / blame
? search:
summary | shortlog | log | commit | commitdiff | tree
blob | blame (incremental) | history | HEAD
ACPI: thinkpad-acpi: module glue cleanups
[deliverable/linux.git] / drivers / misc / thinkpad_acpi.c
CommitLineData
1da177e4 1/*
643f12db 2 * thinkpad_acpi.c - ThinkPad ACPI Extras
1da177e4
LT		 3 *
4 *
78f81cc4 5 * Copyright (C) 2004-2005 Borislav Deianov <borislav@users.sf.net>
a62bc916 6 * Copyright (C) 2006-2007 Henrique de Moraes Holschuh <hmh@hmh.eng.br>
1da177e4
LT		 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
a62bc916
HMH		 20 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
21 * 02110-1301, USA.
78f81cc4
BD		 22 */
23
50efd831 24#define IBM_VERSION "0.18"
01e88f25 25#define TPACPI_SYSFS_VERSION 0x020101
78f81cc4
BD		 26
27/*
1da177e4 28 * Changelog:
4b45cc07
HMH		 29 * 2007-10-20 changelog trimmed down
30 *
643f12db
HMH		 31 * 2007-03-27 0.14 renamed to thinkpad_acpi and moved to
32 * drivers/misc.
f9ff43a6
HMH		 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.
837ca6dd 37 *
78f81cc4
BD		 38 * 2005-03-17 0.11 support for 600e, 770x
39 * thanks to Jamie Lentin <lentinj@dial.pipex.com>
4b45cc07
HMH		 40 *
41 * 2005-01-16 0.9 use MODULE_VERSION
78f81cc4
BD		 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>
1da177e4
LT		 48 */
49
0c78039f
HMH		 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
0c78039f
HMH		 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 */
90enum 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 */
99enum {
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
b21a15f6
HMH		 115/* ACPI HIDs */
116#define IBM_HKEY_HID "IBM0068"
117
118/* Input IDs */
119#define TPACPI_HKEY_INPUT_PRODUCT 0x5054 /* "TP" */
120#define TPACPI_HKEY_INPUT_VERSION 0x4101
121
122
123/****************************************************************************
124 * Main driver
125 */
126
b21a15f6
HMH		 127#define IBM_NAME "thinkpad"
128#define IBM_DESC "ThinkPad ACPI Extras"
129#define IBM_FILE IBM_NAME "_acpi"
130#define IBM_URL "http://ibm-acpi.sf.net/"
131#define IBM_MAIL "ibm-acpi-devel@lists.sourceforge.net"
132
133#define IBM_PROC_DIR "ibm"
134#define IBM_ACPI_EVENT_PREFIX "ibm"
135#define IBM_DRVR_NAME IBM_FILE
136#define IBM_HWMON_DRVR_NAME IBM_NAME "_hwmon"
137
138#define IBM_MAX_ACPI_ARGS 3
139
0c78039f 140/* Debugging */
b21a15f6
HMH		 141#define IBM_LOG IBM_FILE ": "
142#define IBM_ERR KERN_ERR IBM_LOG
143#define IBM_NOTICE KERN_NOTICE IBM_LOG
144#define IBM_INFO KERN_INFO IBM_LOG
145#define IBM_DEBUG KERN_DEBUG IBM_LOG
146
0c78039f
HMH		 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(IBM_DEBUG "%s: " format, __func__ , ## arg); } while (0)
154#ifdef CONFIG_THINKPAD_ACPI_DEBUG
155#define vdbg_printk(a_dbg_level, format, arg...) \
156 dbg_printk(a_dbg_level, format, ## arg)
157static const char *str_supported(int is_supported);
158#else
159#define vdbg_printk(a_dbg_level, format, arg...)
160#endif
161
b21a15f6
HMH		 162#define onoff(status,bit) ((status) & (1 << (bit)) ? "on" : "off")
163#define enabled(status,bit) ((status) & (1 << (bit)) ? "enabled" : "disabled")
164#define strlencmp(a,b) (strncmp((a), (b), strlen(b)))
0c78039f 165
0c78039f
HMH		 166
167/****************************************************************************
b21a15f6 168 * Driver-wide structs and misc. variables
0c78039f
HMH		 169 */
170
171struct ibm_struct;
172
173struct tp_acpi_drv_struct {
174 const struct acpi_device_id *hid;
175 struct acpi_driver *driver;
176
177 void (*notify) (struct ibm_struct *, u32);
178 acpi_handle *handle;
179 u32 type;
180 struct acpi_device *device;
181};
182
183struct ibm_struct {
184 char *name;
185
186 int (*read) (char *);
187 int (*write) (char *);
188 void (*exit) (void);
189 void (*resume) (void);
190
191 struct list_head all_drivers;
192
193 struct tp_acpi_drv_struct *acpi;
194
195 struct {
196 u8 acpi_driver_registered:1;
197 u8 acpi_notify_installed:1;
198 u8 proc_created:1;
199 u8 init_called:1;
200 u8 experimental:1;
201 } flags;
202};
203
204struct ibm_init_struct {
205 char param[32];
206
207 int (*init) (struct ibm_init_struct *);
208 struct ibm_struct *data;
209};
210
211static struct {
212#ifdef CONFIG_THINKPAD_ACPI_BAY
213 u32 bay_status:1;
214 u32 bay_eject:1;
215 u32 bay_status2:1;
216 u32 bay_eject2:1;
217#endif
218 u32 bluetooth:1;
219 u32 hotkey:1;
220 u32 hotkey_mask:1;
221 u32 hotkey_wlsw:1;
222 u32 light:1;
223 u32 light_status:1;
224 u32 bright_16levels:1;
225 u32 wan:1;
226 u32 fan_ctrl_status_undef:1;
227 u32 input_device_registered:1;
228 u32 platform_drv_registered:1;
229 u32 platform_drv_attrs_registered:1;
230 u32 sensors_pdrv_registered:1;
231 u32 sensors_pdrv_attrs_registered:1;
232 u32 sensors_pdev_attrs_registered:1;
233 u32 hotkey_poll_active:1;
234} tp_features;
235
236struct thinkpad_id_data {
237 unsigned int vendor; /* ThinkPad vendor:
238 * PCI_VENDOR_ID_IBM/PCI_VENDOR_ID_LENOVO */
239
240 char *bios_version_str; /* Something like 1ZET51WW (1.03z) */
241 char *ec_version_str; /* Something like 1ZHT51WW-1.04a */
242
243 u16 bios_model; /* Big Endian, TP-1Y = 0x5931, 0 = unknown */
244 u16 ec_model;
245
246 char *model_str;
247};
0c78039f
HMH		 248static struct thinkpad_id_data thinkpad_id;
249
8fef502e
HMH		 250static enum {
251 TPACPI_LIFE_INIT = 0,
252 TPACPI_LIFE_RUNNING,
253 TPACPI_LIFE_EXITING,
254} tpacpi_lifecycle;
255
b21a15f6
HMH		 256static int experimental;
257static u32 dbg_level;
258
56b6aeb0
HMH		 259/****************************************************************************
260 ****************************************************************************
261 *
262 * ACPI Helpers and device model
263 *
264 ****************************************************************************
265 ****************************************************************************/
266
267/*************************************************************************
268 * ACPI basic handles
269 */
1da177e4 270
94954cc6 271static acpi_handle root_handle;
1da177e4
LT		 272
273#define IBM_HANDLE(object, parent, paths...) \
274 static acpi_handle object##_handle; \
275 static acpi_handle *object##_parent = &parent##_handle; \
78f81cc4 276 static char *object##_path; \
1da177e4
LT		 277 static char *object##_paths[] = { paths }
278
78f81cc4
BD		 279IBM_HANDLE(ec, root, "\\_SB.PCI0.ISA.EC0", /* 240, 240x */
280 "\\_SB.PCI.ISA.EC", /* 570 */
281 "\\_SB.PCI0.ISA0.EC0", /* 600e/x, 770e, 770x */
282 "\\_SB.PCI0.ISA.EC", /* A21e, A2xm/p, T20-22, X20-21 */
283 "\\_SB.PCI0.AD4S.EC0", /* i1400, R30 */
284 "\\_SB.PCI0.ICH3.EC0", /* R31 */
285 "\\_SB.PCI0.LPC.EC", /* all others */
56b6aeb0 286 );
78f81cc4 287
56b6aeb0
HMH		 288IBM_HANDLE(ecrd, ec, "ECRD"); /* 570 */
289IBM_HANDLE(ecwr, ec, "ECWR"); /* 570 */
78f81cc4 290
78f81cc4
BD		 291IBM_HANDLE(cmos, root, "\\UCMS", /* R50, R50e, R50p, R51, T4x, X31, X40 */
292 "\\CMOS", /* A3x, G4x, R32, T23, T30, X22-24, X30 */
293 "\\CMS", /* R40, R40e */
56b6aeb0 294 ); /* all others */
78f81cc4
BD		 295
296IBM_HANDLE(hkey, ec, "\\_SB.HKEY", /* 600e/x, 770e, 770x */
297 "^HKEY", /* R30, R31 */
298 "HKEY", /* all others */
56b6aeb0 299 ); /* 570 */
78f81cc4 300
78f81cc4 301
56b6aeb0
HMH		 302/*************************************************************************
303 * ACPI helpers
a8b7a662
HMH		 304 */
305
1da177e4
LT		 306static int acpi_evalf(acpi_handle handle,
307 void *res, char *method, char *fmt, ...)
308{
309 char *fmt0 = fmt;
78f81cc4
BD		 310 struct acpi_object_list params;
311 union acpi_object in_objs[IBM_MAX_ACPI_ARGS];
312 struct acpi_buffer result, *resultp;
313 union acpi_object out_obj;
314 acpi_status status;
315 va_list ap;
316 char res_type;
317 int success;
318 int quiet;
1da177e4
LT		 319
320 if (!*fmt) {
321 printk(IBM_ERR "acpi_evalf() called with empty format\n");
322 return 0;
323 }
324
325 if (*fmt == 'q') {
326 quiet = 1;
327 fmt++;
328 } else
329 quiet = 0;
330
331 res_type = *(fmt++);
332
333 params.count = 0;
334 params.pointer = &in_objs[0];
335
336 va_start(ap, fmt);
337 while (*fmt) {
338 char c = *(fmt++);
339 switch (c) {
340 case 'd': /* int */
341 in_objs[params.count].integer.value = va_arg(ap, int);
342 in_objs[params.count++].type = ACPI_TYPE_INTEGER;
343 break;
78f81cc4 344 /* add more types as needed */
1da177e4
LT		 345 default:
346 printk(IBM_ERR "acpi_evalf() called "
347 "with invalid format character '%c'\n", c);
348 return 0;
349 }
350 }
351 va_end(ap);
352
78f81cc4
BD		 353 if (res_type != 'v') {
354 result.length = sizeof(out_obj);
355 result.pointer = &out_obj;
356 resultp = &result;
357 } else
358 resultp = NULL;
1da177e4 359
78f81cc4 360 status = acpi_evaluate_object(handle, method, &params, resultp);
1da177e4
LT		 361
362 switch (res_type) {
78f81cc4 363 case 'd': /* int */
1da177e4
LT		 364 if (res)
365 *(int *)res = out_obj.integer.value;
366 success = status == AE_OK && out_obj.type == ACPI_TYPE_INTEGER;
367 break;
78f81cc4 368 case 'v': /* void */
1da177e4
LT		 369 success = status == AE_OK;
370 break;
78f81cc4 371 /* add more types as needed */
1da177e4
LT		 372 default:
373 printk(IBM_ERR "acpi_evalf() called "
374 "with invalid format character '%c'\n", res_type);
375 return 0;
376 }
377
56b6aeb0
HMH		 378 if (!success && !quiet)
379 printk(IBM_ERR "acpi_evalf(%s, %s, ...) failed: %d\n",
380 method, fmt0, status);
381
382 return success;
383}
384
56b6aeb0
HMH		 385static int acpi_ec_read(int i, u8 * p)
386{
387 int v;
388
389 if (ecrd_handle) {
390 if (!acpi_evalf(ecrd_handle, &v, NULL, "dd", i))
391 return 0;
392 *p = v;
393 } else {
394 if (ec_read(i, p) < 0)
395 return 0;
396 }
397
398 return 1;
399}
400
401static int acpi_ec_write(int i, u8 v)
402{
403 if (ecwr_handle) {
404 if (!acpi_evalf(ecwr_handle, NULL, NULL, "vdd", i, v))
405 return 0;
406 } else {
407 if (ec_write(i, v) < 0)
408 return 0;
409 }
410
411 return 1;
412}
413
414static int _sta(acpi_handle handle)
415{
416 int status;
417
418 if (!handle || !acpi_evalf(handle, &status, "_STA", "d"))
419 status = 0;
420
421 return status;
422}
423
c9bea99c
HMH		 424static int issue_thinkpad_cmos_command(int cmos_cmd)
425{
426 if (!cmos_handle)
427 return -ENXIO;
428
429 if (!acpi_evalf(cmos_handle, NULL, NULL, "vd", cmos_cmd))
430 return -EIO;
431
432 return 0;
433}
434
56b6aeb0
HMH		 435/*************************************************************************
436 * ACPI device model
437 */
438
f74a27d4
HMH		 439#define IBM_ACPIHANDLE_INIT(object) \
440 drv_acpi_handle_init(#object, &object##_handle, *object##_parent, \
441 object##_paths, ARRAY_SIZE(object##_paths), &object##_path)
442
8d376cd6 443static void drv_acpi_handle_init(char *name,
5fba344c
HMH		 444 acpi_handle *handle, acpi_handle parent,
445 char **paths, int num_paths, char **path)
56b6aeb0
HMH		 446{
447 int i;
448 acpi_status status;
449
5ae930e6
HMH		 450 vdbg_printk(TPACPI_DBG_INIT, "trying to locate ACPI handle for %s\n",
451 name);
452
56b6aeb0
HMH		 453 for (i = 0; i < num_paths; i++) {
454 status = acpi_get_handle(parent, paths[i], handle);
455 if (ACPI_SUCCESS(status)) {
456 *path = paths[i];
5ae930e6
HMH		 457 dbg_printk(TPACPI_DBG_INIT,
458 "Found ACPI handle %s for %s\n",
459 *path, name);
56b6aeb0
HMH		 460 return;
461 }
462 }
463
5ae930e6
HMH		 464 vdbg_printk(TPACPI_DBG_INIT, "ACPI handle for %s not found\n",
465 name);
56b6aeb0
HMH		 466 *handle = NULL;
467}
468
8d376cd6 469static void dispatch_acpi_notify(acpi_handle handle, u32 event, void *data)
56b6aeb0
HMH		 470{
471 struct ibm_struct *ibm = data;
472
8fef502e
HMH		 473 if (tpacpi_lifecycle != TPACPI_LIFE_RUNNING)
474 return;
475
8d376cd6 476 if (!ibm || !ibm->acpi || !ibm->acpi->notify)
56b6aeb0
HMH		 477 return;
478
8d376cd6 479 ibm->acpi->notify(ibm, event);
56b6aeb0
HMH		 480}
481
8d376cd6 482static int __init setup_acpi_notify(struct ibm_struct *ibm)
56b6aeb0
HMH		 483{
484 acpi_status status;
5ae930e6 485 int rc;
56b6aeb0 486
8d376cd6
HMH		 487 BUG_ON(!ibm->acpi);
488
489 if (!*ibm->acpi->handle)
56b6aeb0
HMH		 490 return 0;
491
5ae930e6 492 vdbg_printk(TPACPI_DBG_INIT,
fe08bc4b
HMH		 493 "setting up ACPI notify for %s\n", ibm->name);
494
5ae930e6
HMH		 495 rc = acpi_bus_get_device(*ibm->acpi->handle, &ibm->acpi->device);
496 if (rc < 0) {
497 printk(IBM_ERR "acpi_bus_get_device(%s) failed: %d\n",
498 ibm->name, rc);
56b6aeb0
HMH		 499 return -ENODEV;
500 }
501
8d376cd6
HMH		 502 acpi_driver_data(ibm->acpi->device) = ibm;
503 sprintf(acpi_device_class(ibm->acpi->device), "%s/%s",
643f12db
HMH		 504 IBM_ACPI_EVENT_PREFIX,
505 ibm->name);
56b6aeb0 506
8d376cd6
HMH		 507 status = acpi_install_notify_handler(*ibm->acpi->handle,
508 ibm->acpi->type, dispatch_acpi_notify, ibm);
56b6aeb0
HMH		 509 if (ACPI_FAILURE(status)) {
510 if (status == AE_ALREADY_EXISTS) {
511 printk(IBM_NOTICE "another device driver is already handling %s events\n",
512 ibm->name);
513 } else {
514 printk(IBM_ERR "acpi_install_notify_handler(%s) failed: %d\n",
515 ibm->name, status);
516 }
517 return -ENODEV;
518 }
8d376cd6 519 ibm->flags.acpi_notify_installed = 1;
56b6aeb0
HMH		 520 return 0;
521}
522
8d376cd6 523static int __init tpacpi_device_add(struct acpi_device *device)
56b6aeb0
HMH		 524{
525 return 0;
526}
527
6700121b 528static int __init register_tpacpi_subdriver(struct ibm_struct *ibm)
56b6aeb0 529{
5ae930e6 530 int rc;
56b6aeb0 531
fe08bc4b
HMH		 532 dbg_printk(TPACPI_DBG_INIT,
533 "registering %s as an ACPI driver\n", ibm->name);
534
8d376cd6
HMH		 535 BUG_ON(!ibm->acpi);
536
537 ibm->acpi->driver = kzalloc(sizeof(struct acpi_driver), GFP_KERNEL);
538 if (!ibm->acpi->driver) {
5fba344c
HMH		 539 printk(IBM_ERR "kzalloc(ibm->driver) failed\n");
540 return -ENOMEM;
56b6aeb0
HMH		 541 }
542
8d376cd6
HMH		 543 sprintf(ibm->acpi->driver->name, "%s_%s", IBM_NAME, ibm->name);
544 ibm->acpi->driver->ids = ibm->acpi->hid;
1ba90e3a 545
8d376cd6 546 ibm->acpi->driver->ops.add = &tpacpi_device_add;
56b6aeb0 547
5ae930e6
HMH		 548 rc = acpi_bus_register_driver(ibm->acpi->driver);
549 if (rc < 0) {
56b6aeb0 550 printk(IBM_ERR "acpi_bus_register_driver(%s) failed: %d\n",
1ba90e3a 551 ibm->name, rc);
8d376cd6
HMH		 552 kfree(ibm->acpi->driver);
553 ibm->acpi->driver = NULL;
5ae930e6 554 } else if (!rc)
8d376cd6 555 ibm->flags.acpi_driver_registered = 1;
56b6aeb0 556
5ae930e6 557 return rc;
56b6aeb0
HMH		 558}
559
560
561/****************************************************************************
562 ****************************************************************************
563 *
564 * Procfs Helpers
565 *
566 ****************************************************************************
567 ****************************************************************************/
568
8d376cd6
HMH		 569static int dispatch_procfs_read(char *page, char **start, off_t off,
570 int count, int *eof, void *data)
56b6aeb0
HMH		 571{
572 struct ibm_struct *ibm = data;
573 int len;
574
575 if (!ibm || !ibm->read)
576 return -EINVAL;
577
578 len = ibm->read(page);
579 if (len < 0)
580 return len;
581
582 if (len <= off + count)
583 *eof = 1;
584 *start = page + off;
585 len -= off;
586 if (len > count)
587 len = count;
588 if (len < 0)
589 len = 0;
590
591 return len;
592}
593
8d376cd6
HMH		 594static int dispatch_procfs_write(struct file *file,
595 const char __user * userbuf,
596 unsigned long count, void *data)
56b6aeb0
HMH		 597{
598 struct ibm_struct *ibm = data;
599 char *kernbuf;
600 int ret;
601
602 if (!ibm || !ibm->write)
603 return -EINVAL;
604
605 kernbuf = kmalloc(count + 2, GFP_KERNEL);
606 if (!kernbuf)
607 return -ENOMEM;
1da177e4 608
56b6aeb0
HMH		 609 if (copy_from_user(kernbuf, userbuf, count)) {
610 kfree(kernbuf);
611 return -EFAULT;
612 }
1da177e4 613
56b6aeb0
HMH		 614 kernbuf[count] = 0;
615 strcat(kernbuf, ",");
616 ret = ibm->write(kernbuf);
617 if (ret == 0)
618 ret = count;
1da177e4 619
56b6aeb0
HMH		 620 kfree(kernbuf);
621
622 return ret;
1da177e4
LT		 623}
624
625static char *next_cmd(char **cmds)
626{
627 char *start = *cmds;
628 char *end;
629
630 while ((end = strchr(start, ',')) && end == start)
631 start = end + 1;
632
633 if (!end)
634 return NULL;
635
636 *end = 0;
637 *cmds = end + 1;
638 return start;
639}
640
56b6aeb0 641
54ae1501
HMH		 642/****************************************************************************
643 ****************************************************************************
644 *
7f5d1cd6 645 * Device model: input, hwmon and platform
54ae1501
HMH		 646 *
647 ****************************************************************************
648 ****************************************************************************/
649
94954cc6 650static struct platform_device *tpacpi_pdev;
7fd40029 651static struct platform_device *tpacpi_sensors_pdev;
1beeffe4 652static struct device *tpacpi_hwmon;
7f5d1cd6 653static struct input_dev *tpacpi_inputdev;
8523ed6f 654static struct mutex tpacpi_inputdev_send_mutex;
b21a15f6 655static LIST_HEAD(tpacpi_all_drivers);
e295e850
HMH		 656
657static int tpacpi_resume_handler(struct platform_device *pdev)
658{
659 struct ibm_struct *ibm, *itmp;
660
661 list_for_each_entry_safe(ibm, itmp,
662 &tpacpi_all_drivers,
663 all_drivers) {
664 if (ibm->resume)
665 (ibm->resume)();
666 }
667
668 return 0;
669}
670
54ae1501
HMH		 671static struct platform_driver tpacpi_pdriver = {
672 .driver = {
673 .name = IBM_DRVR_NAME,
674 .owner = THIS_MODULE,
675 },
e295e850 676 .resume = tpacpi_resume_handler,
54ae1501
HMH		 677};
678
7fd40029
HMH		 679static struct platform_driver tpacpi_hwmon_pdriver = {
680 .driver = {
681 .name = IBM_HWMON_DRVR_NAME,
682 .owner = THIS_MODULE,
683 },
684};
54ae1501 685
176750d6 686/*************************************************************************
b21a15f6 687 * sysfs support helpers
176750d6
HMH		 688 */
689
b21a15f6
HMH		 690struct attribute_set {
691 unsigned int members, max_members;
692 struct attribute_group group;
176750d6
HMH		 693};
694
7252374a
HMH		 695struct attribute_set_obj {
696 struct attribute_set s;
697 struct attribute *a;
698} __attribute__((packed));
699
700static struct attribute_set *create_attr_set(unsigned int max_members,
701 const char* name)
702{
703 struct attribute_set_obj *sobj;
704
705 if (max_members == 0)
706 return NULL;
707
708 /* Allocates space for implicit NULL at the end too */
709 sobj = kzalloc(sizeof(struct attribute_set_obj) +
710 max_members * sizeof(struct attribute *),
711 GFP_KERNEL);
712 if (!sobj)
713 return NULL;
714 sobj->s.max_members = max_members;
715 sobj->s.group.attrs = &sobj->a;
716 sobj->s.group.name = name;
717
718 return &sobj->s;
719}
720
f74a27d4
HMH		 721#define destroy_attr_set(_set) \
722 kfree(_set);
723
7252374a
HMH		 724/* not multi-threaded safe, use it in a single thread per set */
725static int add_to_attr_set(struct attribute_set* s, struct attribute *attr)
726{
727 if (!s || !attr)
728 return -EINVAL;
729
730 if (s->members >= s->max_members)
731 return -ENOMEM;
732
733 s->group.attrs[s->members] = attr;
734 s->members++;
735
736 return 0;
737}
738
739static int add_many_to_attr_set(struct attribute_set* s,
740 struct attribute **attr,
741 unsigned int count)
742{
743 int i, res;
744
745 for (i = 0; i < count; i++) {
746 res = add_to_attr_set(s, attr[i]);
747 if (res)
748 return res;
749 }
750
751 return 0;
752}
753
754static void delete_attr_set(struct attribute_set* s, struct kobject *kobj)
755{
756 sysfs_remove_group(kobj, &s->group);
757 destroy_attr_set(s);
758}
759
f74a27d4
HMH		 760#define register_attr_set_with_sysfs(_attr_set, _kobj) \
761 sysfs_create_group(_kobj, &_attr_set->group)
762
7252374a
HMH		 763static int parse_strtoul(const char *buf,
764 unsigned long max, unsigned long *value)
765{
766 char *endp;
767
32afbf07
HMH		 768 while (*buf && isspace(*buf))
769 buf++;
7252374a
HMH		 770 *value = simple_strtoul(buf, &endp, 0);
771 while (*endp && isspace(*endp))
772 endp++;
773 if (*endp || *value > max)
774 return -EINVAL;
775
776 return 0;
777}
778
56b6aeb0 779/*************************************************************************
b21a15f6 780 * thinkpad-acpi driver attributes
56b6aeb0
HMH		 781 */
782
b21a15f6
HMH		 783/* interface_version --------------------------------------------------- */
784static ssize_t tpacpi_driver_interface_version_show(
785 struct device_driver *drv,
786 char *buf)
1da177e4 787{
b21a15f6
HMH		 788 return snprintf(buf, PAGE_SIZE, "0x%08x\n", TPACPI_SYSFS_VERSION);
789}
790
791static DRIVER_ATTR(interface_version, S_IRUGO,
792 tpacpi_driver_interface_version_show, NULL);
793
794/* debug_level --------------------------------------------------------- */
795static ssize_t tpacpi_driver_debug_show(struct device_driver *drv,
796 char *buf)
797{
798 return snprintf(buf, PAGE_SIZE, "0x%04x\n", dbg_level);
799}
800
801static ssize_t tpacpi_driver_debug_store(struct device_driver *drv,
802 const char *buf, size_t count)
803{
804 unsigned long t;
805
806 if (parse_strtoul(buf, 0xffff, &t))
807 return -EINVAL;
808
809 dbg_level = t;
810
811 return count;
812}
813
814static DRIVER_ATTR(debug_level, S_IWUSR | S_IRUGO,
815 tpacpi_driver_debug_show, tpacpi_driver_debug_store);
816
817/* version ------------------------------------------------------------- */
818static ssize_t tpacpi_driver_version_show(struct device_driver *drv,
819 char *buf)
820{
821 return snprintf(buf, PAGE_SIZE, "%s v%s\n", IBM_DESC, IBM_VERSION);
822}
823
824static DRIVER_ATTR(version, S_IRUGO,
825 tpacpi_driver_version_show, NULL);
826
827/* --------------------------------------------------------------------- */
828
829static struct driver_attribute* tpacpi_driver_attributes[] = {
830 &driver_attr_debug_level, &driver_attr_version,
831 &driver_attr_interface_version,
832};
833
834static int __init tpacpi_create_driver_attributes(struct device_driver *drv)
835{
836 int i, res;
837
838 i = 0;
839 res = 0;
840 while (!res && i < ARRAY_SIZE(tpacpi_driver_attributes)) {
841 res = driver_create_file(drv, tpacpi_driver_attributes[i]);
842 i++;
843 }
844
845 return res;
846}
847
848static void tpacpi_remove_driver_attributes(struct device_driver *drv)
849{
850 int i;
851
852 for(i = 0; i < ARRAY_SIZE(tpacpi_driver_attributes); i++)
853 driver_remove_file(drv, tpacpi_driver_attributes[i]);
854}
855
856/****************************************************************************
857 ****************************************************************************
858 *
859 * Subdrivers
860 *
861 ****************************************************************************
862 ****************************************************************************/
863
864/*************************************************************************
865 * thinkpad-acpi init subdriver
866 */
867
868static int __init thinkpad_acpi_driver_init(struct ibm_init_struct *iibm)
869{
870 printk(IBM_INFO "%s v%s\n", IBM_DESC, IBM_VERSION);
871 printk(IBM_INFO "%s\n", IBM_URL);
872
873 printk(IBM_INFO "ThinkPad BIOS %s, EC %s\n",
874 (thinkpad_id.bios_version_str) ?
875 thinkpad_id.bios_version_str : "unknown",
876 (thinkpad_id.ec_version_str) ?
877 thinkpad_id.ec_version_str : "unknown");
d5a2f2f1
HMH		 878
879 if (thinkpad_id.vendor && thinkpad_id.model_str)
880 printk(IBM_INFO "%s %s\n",
881 (thinkpad_id.vendor == PCI_VENDOR_ID_IBM) ?
882 "IBM" : ((thinkpad_id.vendor ==
883 PCI_VENDOR_ID_LENOVO) ?
884 "Lenovo" : "Unknown vendor"),
885 thinkpad_id.model_str);
3945ac36 886
1da177e4
LT		 887 return 0;
888}
889
643f12db 890static int thinkpad_acpi_driver_read(char *p)
1da177e4
LT		 891{
892 int len = 0;
893
894 len += sprintf(p + len, "driver:\t\t%s\n", IBM_DESC);
895 len += sprintf(p + len, "version:\t%s\n", IBM_VERSION);
896
897 return len;
898}
899
a5763f22
HMH		 900static struct ibm_struct thinkpad_acpi_driver_data = {
901 .name = "driver",
902 .read = thinkpad_acpi_driver_read,
903};
904
56b6aeb0
HMH		 905/*************************************************************************
906 * Hotkey subdriver
907 */
908
f74a27d4
HMH		 909enum { /* hot key scan codes (derived from ACPI DSDT) */
910 TP_ACPI_HOTKEYSCAN_FNF1 = 0,
911 TP_ACPI_HOTKEYSCAN_FNF2,
912 TP_ACPI_HOTKEYSCAN_FNF3,
913 TP_ACPI_HOTKEYSCAN_FNF4,
914 TP_ACPI_HOTKEYSCAN_FNF5,
915 TP_ACPI_HOTKEYSCAN_FNF6,
916 TP_ACPI_HOTKEYSCAN_FNF7,
917 TP_ACPI_HOTKEYSCAN_FNF8,
918 TP_ACPI_HOTKEYSCAN_FNF9,
919 TP_ACPI_HOTKEYSCAN_FNF10,
920 TP_ACPI_HOTKEYSCAN_FNF11,
921 TP_ACPI_HOTKEYSCAN_FNF12,
922 TP_ACPI_HOTKEYSCAN_FNBACKSPACE,
923 TP_ACPI_HOTKEYSCAN_FNINSERT,
924 TP_ACPI_HOTKEYSCAN_FNDELETE,
925 TP_ACPI_HOTKEYSCAN_FNHOME,
926 TP_ACPI_HOTKEYSCAN_FNEND,
927 TP_ACPI_HOTKEYSCAN_FNPAGEUP,
928 TP_ACPI_HOTKEYSCAN_FNPAGEDOWN,
929 TP_ACPI_HOTKEYSCAN_FNSPACE,
930 TP_ACPI_HOTKEYSCAN_VOLUMEUP,
931 TP_ACPI_HOTKEYSCAN_VOLUMEDOWN,
932 TP_ACPI_HOTKEYSCAN_MUTE,
933 TP_ACPI_HOTKEYSCAN_THINKPAD,
934};
935
01e88f25
HMH		 936enum { /* Keys available through NVRAM polling */
937 TPACPI_HKEY_NVRAM_KNOWN_MASK = 0x00fb88c0U,
938 TPACPI_HKEY_NVRAM_GOOD_MASK = 0x00fb8000U,
939};
940
941enum { /* Positions of some of the keys in hotkey masks */
942 TP_ACPI_HKEY_DISPSWTCH_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNF7,
943 TP_ACPI_HKEY_DISPXPAND_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNF8,
944 TP_ACPI_HKEY_HIBERNATE_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNF12,
945 TP_ACPI_HKEY_BRGHTUP_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNHOME,
946 TP_ACPI_HKEY_BRGHTDWN_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNEND,
947 TP_ACPI_HKEY_THNKLGHT_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNPAGEUP,
948 TP_ACPI_HKEY_ZOOM_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNSPACE,
949 TP_ACPI_HKEY_VOLUP_MASK = 1 << TP_ACPI_HOTKEYSCAN_VOLUMEUP,
950 TP_ACPI_HKEY_VOLDWN_MASK = 1 << TP_ACPI_HOTKEYSCAN_VOLUMEDOWN,
951 TP_ACPI_HKEY_MUTE_MASK = 1 << TP_ACPI_HOTKEYSCAN_MUTE,
952 TP_ACPI_HKEY_THINKPAD_MASK = 1 << TP_ACPI_HOTKEYSCAN_THINKPAD,
953};
954
955enum { /* NVRAM to ACPI HKEY group map */
956 TP_NVRAM_HKEY_GROUP_HK2 = TP_ACPI_HKEY_THINKPAD_MASK |
957 TP_ACPI_HKEY_ZOOM_MASK |
958 TP_ACPI_HKEY_DISPSWTCH_MASK |
959 TP_ACPI_HKEY_HIBERNATE_MASK,
960 TP_NVRAM_HKEY_GROUP_BRIGHTNESS = TP_ACPI_HKEY_BRGHTUP_MASK |
961 TP_ACPI_HKEY_BRGHTDWN_MASK,
962 TP_NVRAM_HKEY_GROUP_VOLUME = TP_ACPI_HKEY_VOLUP_MASK |
963 TP_ACPI_HKEY_VOLDWN_MASK |
964 TP_ACPI_HKEY_MUTE_MASK,
965};
966
967#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
968struct tp_nvram_state {
969 u16 thinkpad_toggle:1;
970 u16 zoom_toggle:1;
971 u16 display_toggle:1;
972 u16 thinklight_toggle:1;
973 u16 hibernate_toggle:1;
974 u16 displayexp_toggle:1;
975 u16 display_state:1;
976 u16 brightness_toggle:1;
977 u16 volume_toggle:1;
978 u16 mute:1;
979
980 u8 brightness_level;
981 u8 volume_level;
982};
983
984static struct task_struct *tpacpi_hotkey_task;
985static u32 hotkey_source_mask; /* bit mask 0=ACPI,1=NVRAM */
986static int hotkey_poll_freq = 10; /* Hz */
987static struct mutex hotkey_thread_mutex;
988static struct mutex hotkey_thread_data_mutex;
989static unsigned int hotkey_config_change;
990
991#else /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
992
993#define hotkey_source_mask 0U
994
995#endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
996
f74a27d4
HMH		 997static struct mutex hotkey_mutex;
998
78f81cc4 999static int hotkey_orig_status;
ae92bd17 1000static u32 hotkey_orig_mask;
9b010de5 1001static u32 hotkey_all_mask;
6a38abbf 1002static u32 hotkey_reserved_mask;
b2c985e7 1003static u32 hotkey_mask;
6a38abbf 1004
b21a15f6
HMH		 1005static unsigned int hotkey_report_mode;
1006
edf0e0e5 1007static u16 *hotkey_keycode_map;
78f81cc4 1008
94954cc6 1009static struct attribute_set *hotkey_dev_attributes;
a0416420 1010
01e88f25
HMH		 1011#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
1012#define HOTKEY_CONFIG_CRITICAL_START \
1013 mutex_lock(&hotkey_thread_data_mutex); \
1014 hotkey_config_change++;
1015#define HOTKEY_CONFIG_CRITICAL_END \
1016 mutex_unlock(&hotkey_thread_data_mutex);
1017#else
1018#define HOTKEY_CONFIG_CRITICAL_START
1019#define HOTKEY_CONFIG_CRITICAL_END
1020#endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
1021
74941a69
HMH		 1022static int hotkey_get_wlsw(int *status)
1023{
1024 if (!acpi_evalf(hkey_handle, status, "WLSW", "d"))
1025 return -EIO;
1026 return 0;
1027}
1028
b2c985e7
HMH		 1029/*
1030 * Call with hotkey_mutex held
1031 */
1032static int hotkey_mask_get(void)
1033{
01e88f25
HMH		 1034 u32 m = 0;
1035
b2c985e7 1036 if (tp_features.hotkey_mask) {
01e88f25 1037 if (!acpi_evalf(hkey_handle, &m, "DHKN", "d"))
b2c985e7
HMH		 1038 return -EIO;
1039 }
01e88f25 1040 hotkey_mask = m | (hotkey_source_mask & hotkey_mask);
b2c985e7
HMH		 1041
1042 return 0;
1043}
1044
1045/*
1046 * Call with hotkey_mutex held
1047 */
1048static int hotkey_mask_set(u32 mask)
1049{
1050 int i;
1051 int rc = 0;
1052
1053 if (tp_features.hotkey_mask) {
01e88f25 1054 HOTKEY_CONFIG_CRITICAL_START
b2c985e7
HMH		 1055 for (i = 0; i < 32; i++) {
1056 u32 m = 1 << i;
01e88f25
HMH		 1057 /* enable in firmware mask only keys not in NVRAM
1058 * mode, but enable the key in the cached hotkey_mask
1059 * regardless of mode, or the key will end up
1060 * disabled by hotkey_mask_get() */
b2c985e7
HMH		 1061 if (!acpi_evalf(hkey_handle,
1062 NULL, "MHKM", "vdd", i + 1,
01e88f25 1063 !!((mask & ~hotkey_source_mask) & m))) {
b2c985e7
HMH		 1064 rc = -EIO;
1065 break;
1066 } else {
1067 hotkey_mask = (hotkey_mask & ~m) | (mask & m);
1068 }
1069 }
01e88f25 1070 HOTKEY_CONFIG_CRITICAL_END
b2c985e7
HMH		 1071
1072 /* hotkey_mask_get must be called unconditionally below */
01e88f25
HMH		 1073 if (!hotkey_mask_get() && !rc &&
1074 (hotkey_mask & ~hotkey_source_mask) !=
1075 (mask & ~hotkey_source_mask)) {
b2c985e7
HMH		 1076 printk(IBM_NOTICE
1077 "requested hot key mask 0x%08x, but "
1078 "firmware forced it to 0x%08x\n",
1079 mask, hotkey_mask);
1080 }
01e88f25
HMH		 1081 } else {
1082#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
1083 HOTKEY_CONFIG_CRITICAL_START
1084 hotkey_mask = mask & hotkey_source_mask;
1085 HOTKEY_CONFIG_CRITICAL_END
1086 hotkey_mask_get();
1087 if (hotkey_mask != mask) {
1088 printk(IBM_NOTICE
1089 "requested hot key mask 0x%08x, "
1090 "forced to 0x%08x (NVRAM poll mask is "
1091 "0x%08x): no firmware mask support\n",
1092 mask, hotkey_mask, hotkey_source_mask);
1093 }
1094#else
1095 hotkey_mask_get();
1096 rc = -ENXIO;
1097#endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
b2c985e7
HMH		 1098 }
1099
1100 return rc;
1101}
1102
1103static int hotkey_status_get(int *status)
1104{
1105 if (!acpi_evalf(hkey_handle, status, "DHKC", "d"))
1106 return -EIO;
1107
1108 return 0;
1109}
1110
1111static int hotkey_status_set(int status)
1112{
1113 if (!acpi_evalf(hkey_handle, NULL, "MHKC", "vd", status))
1114 return -EIO;
1115
1116 return 0;
1117}
1118
b7c8c200
HMH		 1119static void tpacpi_input_send_radiosw(void)
1120{
1121 int wlsw;
1122
1123 mutex_lock(&tpacpi_inputdev_send_mutex);
1124
1125 if (tp_features.hotkey_wlsw && !hotkey_get_wlsw(&wlsw)) {
1126 input_report_switch(tpacpi_inputdev,
1127 SW_RADIO, !!wlsw);
1128 input_sync(tpacpi_inputdev);
1129 }
1130
1131 mutex_unlock(&tpacpi_inputdev_send_mutex);
1132}
1133
1134static void tpacpi_input_send_key(unsigned int scancode)
1135{
1136 unsigned int keycode;
1137
1138 keycode = hotkey_keycode_map[scancode];
1139
1140 if (keycode != KEY_RESERVED) {
1141 mutex_lock(&tpacpi_inputdev_send_mutex);
1142
1143 input_report_key(tpacpi_inputdev, keycode, 1);
1144 if (keycode == KEY_UNKNOWN)
1145 input_event(tpacpi_inputdev, EV_MSC, MSC_SCAN,
1146 scancode);
1147 input_sync(tpacpi_inputdev);
1148
1149 input_report_key(tpacpi_inputdev, keycode, 0);
1150 if (keycode == KEY_UNKNOWN)
1151 input_event(tpacpi_inputdev, EV_MSC, MSC_SCAN,
1152 scancode);
1153 input_sync(tpacpi_inputdev);
1154
1155 mutex_unlock(&tpacpi_inputdev_send_mutex);
1156 }
1157}
1158
01e88f25
HMH		 1159#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
1160static struct tp_acpi_drv_struct ibm_hotkey_acpidriver;
1161
1162static void tpacpi_hotkey_send_key(unsigned int scancode)
1163{
1164 tpacpi_input_send_key(scancode);
1165 if (hotkey_report_mode < 2) {
1166 acpi_bus_generate_proc_event(ibm_hotkey_acpidriver.device,
1167 0x80, 0x1001 + scancode);
1168 }
1169}
1170
1171static void hotkey_read_nvram(struct tp_nvram_state *n, u32 m)
1172{
1173 u8 d;
1174
1175 if (m & TP_NVRAM_HKEY_GROUP_HK2) {
1176 d = nvram_read_byte(TP_NVRAM_ADDR_HK2);
1177 n->thinkpad_toggle = !!(d & TP_NVRAM_MASK_HKT_THINKPAD);
1178 n->zoom_toggle = !!(d & TP_NVRAM_MASK_HKT_ZOOM);
1179 n->display_toggle = !!(d & TP_NVRAM_MASK_HKT_DISPLAY);
1180 n->hibernate_toggle = !!(d & TP_NVRAM_MASK_HKT_HIBERNATE);
1181 }
1182 if (m & TP_ACPI_HKEY_THNKLGHT_MASK) {
1183 d = nvram_read_byte(TP_NVRAM_ADDR_THINKLIGHT);
1184 n->thinklight_toggle = !!(d & TP_NVRAM_MASK_THINKLIGHT);
1185 }
1186 if (m & TP_ACPI_HKEY_DISPXPAND_MASK) {
1187 d = nvram_read_byte(TP_NVRAM_ADDR_VIDEO);
1188 n->displayexp_toggle =
1189 !!(d & TP_NVRAM_MASK_HKT_DISPEXPND);
1190 }
1191 if (m & TP_NVRAM_HKEY_GROUP_BRIGHTNESS) {
1192 d = nvram_read_byte(TP_NVRAM_ADDR_BRIGHTNESS);
1193 n->brightness_level = (d & TP_NVRAM_MASK_LEVEL_BRIGHTNESS)
1194 >> TP_NVRAM_POS_LEVEL_BRIGHTNESS;
1195 n->brightness_toggle =
1196 !!(d & TP_NVRAM_MASK_HKT_BRIGHTNESS);
1197 }
1198 if (m & TP_NVRAM_HKEY_GROUP_VOLUME) {
1199 d = nvram_read_byte(TP_NVRAM_ADDR_MIXER);
1200 n->volume_level = (d & TP_NVRAM_MASK_LEVEL_VOLUME)
1201 >> TP_NVRAM_POS_LEVEL_VOLUME;
1202 n->mute = !!(d & TP_NVRAM_MASK_MUTE);
1203 n->volume_toggle = !!(d & TP_NVRAM_MASK_HKT_VOLUME);
1204 }
1205}
1206
1207#define TPACPI_COMPARE_KEY(__scancode, __member) \
1208 do { if ((mask & (1 << __scancode)) && oldn->__member != newn->__member) \
1209 tpacpi_hotkey_send_key(__scancode); } while (0)
1210
1211#define TPACPI_MAY_SEND_KEY(__scancode) \
1212 do { if (mask & (1 << __scancode)) \
1213 tpacpi_hotkey_send_key(__scancode); } while (0)
1214
1215static void hotkey_compare_and_issue_event(struct tp_nvram_state *oldn,
1216 struct tp_nvram_state *newn,
1217 u32 mask)
1218{
1219 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_THINKPAD, thinkpad_toggle);
1220 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNSPACE, zoom_toggle);
1221 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNF7, display_toggle);
1222 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNF12, hibernate_toggle);
1223
1224 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNPAGEUP, thinklight_toggle);
1225
1226 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNF8, displayexp_toggle);
1227
1228 /* handle volume */
1229 if (oldn->volume_toggle != newn->volume_toggle) {
1230 if (oldn->mute != newn->mute) {
1231 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_MUTE);
1232 }
1233 if (oldn->volume_level > newn->volume_level) {
1234 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEDOWN);
1235 } else if (oldn->volume_level < newn->volume_level) {
1236 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEUP);
1237 } else if (oldn->mute == newn->mute) {
1238 /* repeated key presses that didn't change state */
1239 if (newn->mute) {
1240 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_MUTE);
1241 } else if (newn->volume_level != 0) {
1242 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEUP);
1243 } else {
1244 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEDOWN);
1245 }
1246 }
1247 }
1248
1249 /* handle brightness */
1250 if (oldn->brightness_toggle != newn->brightness_toggle) {
1251 if (oldn->brightness_level < newn->brightness_level) {
1252 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNHOME);
1253 } else if (oldn->brightness_level > newn->brightness_level) {
1254 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNEND);
1255 } else {
1256 /* repeated key presses that didn't change state */
1257 if (newn->brightness_level != 0) {
1258 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNHOME);
1259 } else {
1260 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNEND);
1261 }
1262 }
1263 }
1264}
1265
1266#undef TPACPI_COMPARE_KEY
1267#undef TPACPI_MAY_SEND_KEY
1268
1269static int hotkey_kthread(void *data)
1270{
1271 struct tp_nvram_state s[2];
1272 u32 mask;
1273 unsigned int si, so;
1274 unsigned long t;
1275 unsigned int change_detector, must_reset;
1276
1277 mutex_lock(&hotkey_thread_mutex);
1278
1279 if (tpacpi_lifecycle == TPACPI_LIFE_EXITING)
1280 goto exit;
1281
1282 set_freezable();
1283
1284 so = 0;
1285 si = 1;
1286 t = 0;
1287
1288 /* Initial state for compares */
1289 mutex_lock(&hotkey_thread_data_mutex);
1290 change_detector = hotkey_config_change;
1291 mask = hotkey_source_mask & hotkey_mask;
1292 mutex_unlock(&hotkey_thread_data_mutex);
1293 hotkey_read_nvram(&s[so], mask);
1294
1295 while (!kthread_should_stop() && hotkey_poll_freq) {
1296 if (t == 0)
1297 t = 1000/hotkey_poll_freq;
1298 t = msleep_interruptible(t);
1299 if (unlikely(kthread_should_stop()))
1300 break;
1301 must_reset = try_to_freeze();
1302 if (t > 0 && !must_reset)
1303 continue;
1304
1305 mutex_lock(&hotkey_thread_data_mutex);
1306 if (must_reset || hotkey_config_change != change_detector) {
1307 /* forget old state on thaw or config change */
1308 si = so;
1309 t = 0;
1310 change_detector = hotkey_config_change;
1311 }
1312 mask = hotkey_source_mask & hotkey_mask;
1313 mutex_unlock(&hotkey_thread_data_mutex);
1314
1315 if (likely(mask)) {
1316 hotkey_read_nvram(&s[si], mask);
1317 if (likely(si != so)) {
1318 hotkey_compare_and_issue_event(&s[so], &s[si],
1319 mask);
1320 }
1321 }
1322
1323 so = si;
1324 si ^= 1;
1325 }
1326
1327exit:
1328 mutex_unlock(&hotkey_thread_mutex);
1329 return 0;
1330}
1331
1332static void hotkey_poll_stop_sync(void)
1333{
1334 if (tpacpi_hotkey_task) {
1335 if (frozen(tpacpi_hotkey_task) ||
1336 freezing(tpacpi_hotkey_task))
1337 thaw_process(tpacpi_hotkey_task);
1338
1339 kthread_stop(tpacpi_hotkey_task);
1340 tpacpi_hotkey_task = NULL;
1341 mutex_lock(&hotkey_thread_mutex);
1342 /* at this point, the thread did exit */
1343 mutex_unlock(&hotkey_thread_mutex);
1344 }
1345}
1346
1347/* call with hotkey_mutex held */
1348static void hotkey_poll_setup(int may_warn)
1349{
1350 if ((hotkey_source_mask & hotkey_mask) != 0 &&
1351 hotkey_poll_freq > 0 &&
1352 (tpacpi_inputdev->users > 0 || hotkey_report_mode < 2)) {
1353 if (!tpacpi_hotkey_task) {
1354 tpacpi_hotkey_task = kthread_run(hotkey_kthread,
1355 NULL, IBM_FILE "d");
1356 if (IS_ERR(tpacpi_hotkey_task)) {
1357 tpacpi_hotkey_task = NULL;
1358 printk(IBM_ERR "could not create kernel thread "
1359 "for hotkey polling\n");
1360 }
1361 }
1362 } else {
1363 hotkey_poll_stop_sync();
1364 if (may_warn &&
1365 hotkey_source_mask != 0 && hotkey_poll_freq == 0) {
1366 printk(IBM_NOTICE "hot keys 0x%08x require polling, "
1367 "which is currently disabled\n",
1368 hotkey_source_mask);
1369 }
1370 }
1371}
1372
1373static void hotkey_poll_setup_safe(int may_warn)
1374{
1375 mutex_lock(&hotkey_mutex);
1376 hotkey_poll_setup(may_warn);
1377 mutex_unlock(&hotkey_mutex);
1378}
1379
1380static int hotkey_inputdev_open(struct input_dev *dev)
1381{
1382 switch (tpacpi_lifecycle) {
1383 case TPACPI_LIFE_INIT:
1384 /*
1385 * hotkey_init will call hotkey_poll_setup_safe
1386 * at the appropriate moment
1387 */
1388 return 0;
1389 case TPACPI_LIFE_EXITING:
1390 return -EBUSY;
1391 case TPACPI_LIFE_RUNNING:
1392 hotkey_poll_setup_safe(0);
1393 return 0;
1394 }
1395
1396 /* Should only happen if tpacpi_lifecycle is corrupt */
1397 BUG();
1398 return -EBUSY;
1399}
1400
1401static void hotkey_inputdev_close(struct input_dev *dev)
1402{
1403 /* disable hotkey polling when possible */
1404 if (tpacpi_lifecycle == TPACPI_LIFE_RUNNING)
1405 hotkey_poll_setup_safe(0);
1406}
1407#endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
1408
a0416420
HMH		 1409/* sysfs hotkey enable ------------------------------------------------- */
1410static ssize_t hotkey_enable_show(struct device *dev,
1411 struct device_attribute *attr,
1412 char *buf)
1413{
ae92bd17 1414 int res, status;
a0416420 1415
b2c985e7 1416 res = hotkey_status_get(&status);
a0416420
HMH		 1417 if (res)
1418 return res;
1419
1420 return snprintf(buf, PAGE_SIZE, "%d\n", status);
1421}
1422
1423static ssize_t hotkey_enable_store(struct device *dev,
1424 struct device_attribute *attr,
1425 const char *buf, size_t count)
1426{
1427 unsigned long t;
b2c985e7 1428 int res;
a0416420
HMH		 1429
1430 if (parse_strtoul(buf, 1, &t))
1431 return -EINVAL;
1432
b2c985e7 1433 res = hotkey_status_set(t);
a0416420
HMH		 1434
1435 return (res) ? res : count;
1436}
1437
1438static struct device_attribute dev_attr_hotkey_enable =
cc4c24e1 1439 __ATTR(hotkey_enable, S_IWUSR | S_IRUGO,
a0416420
HMH		 1440 hotkey_enable_show, hotkey_enable_store);
1441
1442/* sysfs hotkey mask --------------------------------------------------- */
1443static ssize_t hotkey_mask_show(struct device *dev,
1444 struct device_attribute *attr,
1445 char *buf)
1446{
b2c985e7 1447 int res;
a0416420 1448
b2c985e7
HMH		 1449 if (mutex_lock_interruptible(&hotkey_mutex))
1450 return -ERESTARTSYS;
1451 res = hotkey_mask_get();
1452 mutex_unlock(&hotkey_mutex);
a0416420 1453
b2c985e7
HMH		 1454 return (res)?
1455 res : snprintf(buf, PAGE_SIZE, "0x%08x\n", hotkey_mask);
a0416420
HMH		 1456}
1457
1458static ssize_t hotkey_mask_store(struct device *dev,
1459 struct device_attribute *attr,
1460 const char *buf, size_t count)
1461{
1462 unsigned long t;
b2c985e7 1463 int res;
a0416420 1464
ae92bd17 1465 if (parse_strtoul(buf, 0xffffffffUL, &t))
a0416420
HMH		 1466 return -EINVAL;
1467
b2c985e7
HMH		 1468 if (mutex_lock_interruptible(&hotkey_mutex))
1469 return -ERESTARTSYS;
1470
1471 res = hotkey_mask_set(t);
01e88f25
HMH		 1472
1473#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
1474 hotkey_poll_setup(1);
1475#endif
1476
b2c985e7 1477 mutex_unlock(&hotkey_mutex);
a0416420
HMH		 1478
1479 return (res) ? res : count;
1480}
1481
1482static struct device_attribute dev_attr_hotkey_mask =
cc4c24e1 1483 __ATTR(hotkey_mask, S_IWUSR | S_IRUGO,
a0416420
HMH		 1484 hotkey_mask_show, hotkey_mask_store);
1485
1486/* sysfs hotkey bios_enabled ------------------------------------------- */
1487static ssize_t hotkey_bios_enabled_show(struct device *dev,
1488 struct device_attribute *attr,
1489 char *buf)
1490{
1491 return snprintf(buf, PAGE_SIZE, "%d\n", hotkey_orig_status);
1492}
1493
1494static struct device_attribute dev_attr_hotkey_bios_enabled =
cc4c24e1 1495 __ATTR(hotkey_bios_enabled, S_IRUGO, hotkey_bios_enabled_show, NULL);
a0416420
HMH		 1496
1497/* sysfs hotkey bios_mask ---------------------------------------------- */
1498static ssize_t hotkey_bios_mask_show(struct device *dev,
1499 struct device_attribute *attr,
1500 char *buf)
1501{
ae92bd17 1502 return snprintf(buf, PAGE_SIZE, "0x%08x\n", hotkey_orig_mask);
a0416420
HMH		 1503}
1504
1505static struct device_attribute dev_attr_hotkey_bios_mask =
cc4c24e1 1506 __ATTR(hotkey_bios_mask, S_IRUGO, hotkey_bios_mask_show, NULL);
a0416420 1507
9b010de5
HMH		 1508/* sysfs hotkey all_mask ----------------------------------------------- */
1509static ssize_t hotkey_all_mask_show(struct device *dev,
1510 struct device_attribute *attr,
1511 char *buf)
1512{
01e88f25
HMH		 1513 return snprintf(buf, PAGE_SIZE, "0x%08x\n",
1514 hotkey_all_mask | hotkey_source_mask);
9b010de5
HMH		 1515}
1516
1517static struct device_attribute dev_attr_hotkey_all_mask =
1518 __ATTR(hotkey_all_mask, S_IRUGO, hotkey_all_mask_show, NULL);
1519
1520/* sysfs hotkey recommended_mask --------------------------------------- */
1521static ssize_t hotkey_recommended_mask_show(struct device *dev,
1522 struct device_attribute *attr,
1523 char *buf)
1524{
1525 return snprintf(buf, PAGE_SIZE, "0x%08x\n",
01e88f25
HMH		 1526 (hotkey_all_mask | hotkey_source_mask)
1527 & ~hotkey_reserved_mask);
9b010de5
HMH		 1528}
1529
1530static struct device_attribute dev_attr_hotkey_recommended_mask =
1531 __ATTR(hotkey_recommended_mask, S_IRUGO,
1532 hotkey_recommended_mask_show, NULL);
1533
01e88f25
HMH		 1534#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
1535
1536/* sysfs hotkey hotkey_source_mask ------------------------------------- */
1537static ssize_t hotkey_source_mask_show(struct device *dev,
1538 struct device_attribute *attr,
1539 char *buf)
1540{
1541 return snprintf(buf, PAGE_SIZE, "0x%08x\n", hotkey_source_mask);
1542}
1543
1544static ssize_t hotkey_source_mask_store(struct device *dev,
1545 struct device_attribute *attr,
1546 const char *buf, size_t count)
1547{
1548 unsigned long t;
1549
1550 if (parse_strtoul(buf, 0xffffffffUL, &t) ||
1551 ((t & ~TPACPI_HKEY_NVRAM_KNOWN_MASK) != 0))
1552 return -EINVAL;
1553
1554 if (mutex_lock_interruptible(&hotkey_mutex))
1555 return -ERESTARTSYS;
1556
1557 HOTKEY_CONFIG_CRITICAL_START
1558 hotkey_source_mask = t;
1559 HOTKEY_CONFIG_CRITICAL_END
1560
1561 hotkey_poll_setup(1);
1562
1563 mutex_unlock(&hotkey_mutex);
1564
1565 return count;
1566}
1567
1568static struct device_attribute dev_attr_hotkey_source_mask =
1569 __ATTR(hotkey_source_mask, S_IWUSR | S_IRUGO,
1570 hotkey_source_mask_show, hotkey_source_mask_store);
1571
1572/* sysfs hotkey hotkey_poll_freq --------------------------------------- */
1573static ssize_t hotkey_poll_freq_show(struct device *dev,
1574 struct device_attribute *attr,
1575 char *buf)
1576{
1577 return snprintf(buf, PAGE_SIZE, "%d\n", hotkey_poll_freq);
1578}
1579
1580static ssize_t hotkey_poll_freq_store(struct device *dev,
1581 struct device_attribute *attr,
1582 const char *buf, size_t count)
1583{
1584 unsigned long t;
1585
1586 if (parse_strtoul(buf, 25, &t))
1587 return -EINVAL;
1588
1589 if (mutex_lock_interruptible(&hotkey_mutex))
1590 return -ERESTARTSYS;
1591
1592 hotkey_poll_freq = t;
1593
1594 hotkey_poll_setup(1);
1595 mutex_unlock(&hotkey_mutex);
1596
1597 return count;
1598}
1599
1600static struct device_attribute dev_attr_hotkey_poll_freq =
1601 __ATTR(hotkey_poll_freq, S_IWUSR | S_IRUGO,
1602 hotkey_poll_freq_show, hotkey_poll_freq_store);
1603
1604#endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
1605
74941a69
HMH		 1606/* sysfs hotkey radio_sw ----------------------------------------------- */
1607static ssize_t hotkey_radio_sw_show(struct device *dev,
1608 struct device_attribute *attr,
1609 char *buf)
1610{
1611 int res, s;
1612 res = hotkey_get_wlsw(&s);
1613 if (res < 0)
1614 return res;
1615
1616 return snprintf(buf, PAGE_SIZE, "%d\n", !!s);
1617}
1618
1619static struct device_attribute dev_attr_hotkey_radio_sw =
1620 __ATTR(hotkey_radio_sw, S_IRUGO, hotkey_radio_sw_show, NULL);
1621
ff80f137
HMH		 1622/* sysfs hotkey report_mode -------------------------------------------- */
1623static ssize_t hotkey_report_mode_show(struct device *dev,
1624 struct device_attribute *attr,
1625 char *buf)
1626{
1627 return snprintf(buf, PAGE_SIZE, "%d\n",
1628 (hotkey_report_mode != 0) ? hotkey_report_mode : 1);
1629}
1630
1631static struct device_attribute dev_attr_hotkey_report_mode =
1632 __ATTR(hotkey_report_mode, S_IRUGO, hotkey_report_mode_show, NULL);
1633
a0416420
HMH		 1634/* --------------------------------------------------------------------- */
1635
ff80f137
HMH		 1636static struct attribute *hotkey_attributes[] __initdata = {
1637 &dev_attr_hotkey_enable.attr,
01e88f25 1638 &dev_attr_hotkey_bios_enabled.attr,
ff80f137 1639 &dev_attr_hotkey_report_mode.attr,
01e88f25
HMH		 1640#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
1641 &dev_attr_hotkey_mask.attr,
1642 &dev_attr_hotkey_all_mask.attr,
1643 &dev_attr_hotkey_recommended_mask.attr,
1644 &dev_attr_hotkey_source_mask.attr,
1645 &dev_attr_hotkey_poll_freq.attr,
1646#endif
ff80f137
HMH		 1647};
1648
1649static struct attribute *hotkey_mask_attributes[] __initdata = {
a0416420 1650 &dev_attr_hotkey_bios_mask.attr,
01e88f25
HMH		 1651#ifndef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
1652 &dev_attr_hotkey_mask.attr,
9b010de5
HMH		 1653 &dev_attr_hotkey_all_mask.attr,
1654 &dev_attr_hotkey_recommended_mask.attr,
01e88f25 1655#endif
a0416420
HMH		 1656};
1657
a5763f22 1658static int __init hotkey_init(struct ibm_init_struct *iibm)
56b6aeb0 1659{
0f089147
HMH		 1660 /* Requirements for changing the default keymaps:
1661 *
1662 * 1. Many of the keys are mapped to KEY_RESERVED for very
1663 * good reasons. Do not change them unless you have deep
1664 * knowledge on the IBM and Lenovo ThinkPad firmware for
1665 * the various ThinkPad models. The driver behaves
1666 * differently for KEY_RESERVED: such keys have their
1667 * hot key mask *unset* in mask_recommended, and also
1668 * in the initial hot key mask programmed into the
1669 * firmware at driver load time, which means the firm-
1670 * ware may react very differently if you change them to
1671 * something else;
1672 *
1673 * 2. You must be subscribed to the linux-thinkpad and
1674 * ibm-acpi-devel mailing lists, and you should read the
1675 * list archives since 2007 if you want to change the
1676 * keymaps. This requirement exists so that you will
1677 * know the past history of problems with the thinkpad-
1678 * acpi driver keymaps, and also that you will be
1679 * listening to any bug reports;
1680 *
1681 * 3. Do not send thinkpad-acpi specific patches directly to
1682 * for merging, *ever*. Send them to the linux-acpi
1683 * mailinglist for comments. Merging is to be done only
1684 * through acpi-test and the ACPI maintainer.
1685 *
1686 * If the above is too much to ask, don't change the keymap.
1687 * Ask the thinkpad-acpi maintainer to do it, instead.
1688 */
edf0e0e5
HMH		 1689 static u16 ibm_keycode_map[] __initdata = {
1690 /* Scan Codes 0x00 to 0x0B: ACPI HKEY FN+F1..F12 */
1691 KEY_FN_F1, KEY_FN_F2, KEY_COFFEE, KEY_SLEEP,
1692 KEY_WLAN, KEY_FN_F6, KEY_SWITCHVIDEOMODE, KEY_FN_F8,
1693 KEY_FN_F9, KEY_FN_F10, KEY_FN_F11, KEY_SUSPEND,
0f089147
HMH		 1694
1695 /* Scan codes 0x0C to 0x1F: Other ACPI HKEY hot keys */
edf0e0e5
HMH		 1696 KEY_UNKNOWN, /* 0x0C: FN+BACKSPACE */
1697 KEY_UNKNOWN, /* 0x0D: FN+INSERT */
1698 KEY_UNKNOWN, /* 0x0E: FN+DELETE */
0f089147
HMH		 1699
1700 /* brightness: firmware always reacts to them, unless
1701 * X.org did some tricks in the radeon BIOS scratch
1702 * registers of *some* models */
e927c08d 1703 KEY_RESERVED, /* 0x0F: FN+HOME (brightness up) */
e927c08d 1704 KEY_RESERVED, /* 0x10: FN+END (brightness down) */
0f089147
HMH		 1705
1706 /* Thinklight: firmware always react to it */
edf0e0e5 1707 KEY_RESERVED, /* 0x11: FN+PGUP (thinklight toggle) */
0f089147 1708
edf0e0e5
HMH		 1709 KEY_UNKNOWN, /* 0x12: FN+PGDOWN */
1710 KEY_ZOOM, /* 0x13: FN+SPACE (zoom) */
0f089147
HMH		 1711
1712 /* Volume: firmware always react to it and reprograms
1713 * the built-in *extra* mixer. Never map it to control
1714 * another mixer by default. */
e927c08d
HMH		 1715 KEY_RESERVED, /* 0x14: VOLUME UP */
1716 KEY_RESERVED, /* 0x15: VOLUME DOWN */
1717 KEY_RESERVED, /* 0x16: MUTE */
0f089147 1718
edf0e0e5 1719 KEY_VENDOR, /* 0x17: Thinkpad/AccessIBM/Lenovo */
0f089147 1720
edf0e0e5
HMH		 1721 /* (assignments unknown, please report if found) */
1722 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN,
1723 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN,
1724 };
1725 static u16 lenovo_keycode_map[] __initdata = {
1726 /* Scan Codes 0x00 to 0x0B: ACPI HKEY FN+F1..F12 */
1727 KEY_FN_F1, KEY_COFFEE, KEY_BATTERY, KEY_SLEEP,
1728 KEY_WLAN, KEY_FN_F6, KEY_SWITCHVIDEOMODE, KEY_FN_F8,
1729 KEY_FN_F9, KEY_FN_F10, KEY_FN_F11, KEY_SUSPEND,
0f089147
HMH		 1730
1731 /* Scan codes 0x0C to 0x1F: Other ACPI HKEY hot keys */
edf0e0e5
HMH		 1732 KEY_UNKNOWN, /* 0x0C: FN+BACKSPACE */
1733 KEY_UNKNOWN, /* 0x0D: FN+INSERT */
1734 KEY_UNKNOWN, /* 0x0E: FN+DELETE */
0f089147 1735
56a185b4 1736 KEY_RESERVED, /* 0x0F: FN+HOME (brightness up) */
56a185b4 1737 KEY_RESERVED, /* 0x10: FN+END (brightness down) */
0f089147 1738
edf0e0e5 1739 KEY_RESERVED, /* 0x11: FN+PGUP (thinklight toggle) */
0f089147 1740
edf0e0e5
HMH		 1741 KEY_UNKNOWN, /* 0x12: FN+PGDOWN */
1742 KEY_ZOOM, /* 0x13: FN+SPACE (zoom) */
0f089147
HMH		 1743
1744 /* Volume: z60/z61, T60 (BIOS version?): firmware always
1745 * react to it and reprograms the built-in *extra* mixer.
1746 * Never map it to control another mixer by default.
1747 *
1748 * T60?, T61, R60?, R61: firmware and EC tries to send
1749 * these over the regular keyboard, so these are no-ops,
1750 * but there are still weird bugs re. MUTE, so do not
1751 * change unless you get test reports from all Lenovo
1752 * models. May cause the BIOS to interfere with the
1753 * HDA mixer.
1754 */
e927c08d
HMH		 1755 KEY_RESERVED, /* 0x14: VOLUME UP */
1756 KEY_RESERVED, /* 0x15: VOLUME DOWN */
1757 KEY_RESERVED, /* 0x16: MUTE */
0f089147 1758
edf0e0e5 1759 KEY_VENDOR, /* 0x17: Thinkpad/AccessIBM/Lenovo */
0f089147 1760
edf0e0e5
HMH		 1761 /* (assignments unknown, please report if found) */
1762 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN,
1763 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN,
1764 };
1765
1766#define TPACPI_HOTKEY_MAP_LEN ARRAY_SIZE(ibm_keycode_map)
1767#define TPACPI_HOTKEY_MAP_SIZE sizeof(ibm_keycode_map)
1768#define TPACPI_HOTKEY_MAP_TYPESIZE sizeof(ibm_keycode_map[0])
1769
6a38abbf 1770 int res, i;
74941a69 1771 int status;
1b6521dc 1772 int hkeyv;
b86c4722 1773
fe08bc4b
HMH		 1774 vdbg_printk(TPACPI_DBG_INIT, "initializing hotkey subdriver\n");
1775
6a38abbf 1776 BUG_ON(!tpacpi_inputdev);
01e88f25
HMH		 1777 BUG_ON(tpacpi_inputdev->open != NULL ||
1778 tpacpi_inputdev->close != NULL);
6a38abbf 1779
8d376cd6 1780 IBM_ACPIHANDLE_INIT(hkey);
40ca9fdf 1781 mutex_init(&hotkey_mutex);
5fba344c 1782
01e88f25
HMH		 1783#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
1784 mutex_init(&hotkey_thread_mutex);
1785 mutex_init(&hotkey_thread_data_mutex);
1786#endif
1787
56b6aeb0 1788 /* hotkey not supported on 570 */
d8fd94d9 1789 tp_features.hotkey = hkey_handle != NULL;
56b6aeb0 1790
fe08bc4b 1791 vdbg_printk(TPACPI_DBG_INIT, "hotkeys are %s\n",
d8fd94d9 1792 str_supported(tp_features.hotkey));
fe08bc4b 1793
d8fd94d9 1794 if (tp_features.hotkey) {
01e88f25 1795 hotkey_dev_attributes = create_attr_set(10, NULL);
a0416420
HMH		 1796 if (!hotkey_dev_attributes)
1797 return -ENOMEM;
ff80f137
HMH		 1798 res = add_many_to_attr_set(hotkey_dev_attributes,
1799 hotkey_attributes,
1800 ARRAY_SIZE(hotkey_attributes));
a0416420
HMH		 1801 if (res)
1802 return res;
1803
56b6aeb0 1804 /* mask not supported on 570, 600e/x, 770e, 770x, A21e, A2xm/p,
1b6521dc
HMH		 1805 A30, R30, R31, T20-22, X20-21, X22-24. Detected by checking
1806 for HKEY interface version 0x100 */
1807 if (acpi_evalf(hkey_handle, &hkeyv, "MHKV", "qd")) {
1808 if ((hkeyv >> 8) != 1) {
1809 printk(IBM_ERR "unknown version of the "
1810 "HKEY interface: 0x%x\n", hkeyv);
1811 printk(IBM_ERR "please report this to %s\n",
1812 IBM_MAIL);
1813 } else {
1814 /*
1815 * MHKV 0x100 in A31, R40, R40e,
1816 * T4x, X31, and later
01e88f25 1817 */
1b6521dc
HMH		 1818 tp_features.hotkey_mask = 1;
1819 }
1820 }
56b6aeb0 1821
fe08bc4b 1822 vdbg_printk(TPACPI_DBG_INIT, "hotkey masks are %s\n",
d8fd94d9 1823 str_supported(tp_features.hotkey_mask));
fe08bc4b 1824
9b010de5 1825 if (tp_features.hotkey_mask) {
9b010de5 1826 if (!acpi_evalf(hkey_handle, &hotkey_all_mask,
1b6521dc
HMH		 1827 "MHKA", "qd")) {
1828 printk(IBM_ERR
1829 "missing MHKA handler, "
1830 "please report this to %s\n",
1831 IBM_MAIL);
9b010de5 1832 hotkey_all_mask = 0x080cU; /* FN+F12, FN+F4, FN+F3 */
1b6521dc 1833 }
9b010de5
HMH		 1834 }
1835
01e88f25
HMH		 1836 /* hotkey_source_mask *must* be zero for
1837 * the first hotkey_mask_get */
b2c985e7 1838 res = hotkey_status_get(&hotkey_orig_status);
a0416420 1839 if (!res && tp_features.hotkey_mask) {
b2c985e7
HMH		 1840 res = hotkey_mask_get();
1841 hotkey_orig_mask = hotkey_mask;
1842 if (!res) {
1843 res = add_many_to_attr_set(
1844 hotkey_dev_attributes,
1845 hotkey_mask_attributes,
1846 ARRAY_SIZE(hotkey_mask_attributes));
1847 }
a0416420 1848 }
74941a69 1849
01e88f25
HMH		 1850#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
1851 if (tp_features.hotkey_mask) {
1852 hotkey_source_mask = TPACPI_HKEY_NVRAM_GOOD_MASK
1853 & ~hotkey_all_mask;
1854 } else {
1855 hotkey_source_mask = TPACPI_HKEY_NVRAM_GOOD_MASK;
1856 }
1857
1858 vdbg_printk(TPACPI_DBG_INIT,
1859 "hotkey source mask 0x%08x, polling freq %d\n",
1860 hotkey_source_mask, hotkey_poll_freq);
1861#endif
1862
74941a69
HMH		 1863 /* Not all thinkpads have a hardware radio switch */
1864 if (!res && acpi_evalf(hkey_handle, &status, "WLSW", "qd")) {
1865 tp_features.hotkey_wlsw = 1;
1866 printk(IBM_INFO
1867 "radio switch found; radios are %s\n",
1868 enabled(status, 0));
1869 res = add_to_attr_set(hotkey_dev_attributes,
1870 &dev_attr_hotkey_radio_sw.attr);
1871 }
1872
a0416420
HMH		 1873 if (!res)
1874 res = register_attr_set_with_sysfs(
1875 hotkey_dev_attributes,
1876 &tpacpi_pdev->dev.kobj);
b86c4722
HMH		 1877 if (res)
1878 return res;
6a38abbf 1879
edf0e0e5
HMH		 1880 /* Set up key map */
1881
1882 hotkey_keycode_map = kmalloc(TPACPI_HOTKEY_MAP_SIZE,
1883 GFP_KERNEL);
1884 if (!hotkey_keycode_map) {
1885 printk(IBM_ERR "failed to allocate memory for key map\n");
1886 return -ENOMEM;
1887 }
1888
1889 if (thinkpad_id.vendor == PCI_VENDOR_ID_LENOVO) {
1890 dbg_printk(TPACPI_DBG_INIT,
1891 "using Lenovo default hot key map\n");
1892 memcpy(hotkey_keycode_map, &lenovo_keycode_map,
1893 TPACPI_HOTKEY_MAP_SIZE);
1894 } else {
1895 dbg_printk(TPACPI_DBG_INIT,
1896 "using IBM default hot key map\n");
1897 memcpy(hotkey_keycode_map, &ibm_keycode_map,
1898 TPACPI_HOTKEY_MAP_SIZE);
1899 }
1900
6a38abbf
HMH		 1901 set_bit(EV_KEY, tpacpi_inputdev->evbit);
1902 set_bit(EV_MSC, tpacpi_inputdev->evbit);
1903 set_bit(MSC_SCAN, tpacpi_inputdev->mscbit);
edf0e0e5
HMH		 1904 tpacpi_inputdev->keycodesize = TPACPI_HOTKEY_MAP_TYPESIZE;
1905 tpacpi_inputdev->keycodemax = TPACPI_HOTKEY_MAP_LEN;
1906 tpacpi_inputdev->keycode = hotkey_keycode_map;
1907 for (i = 0; i < TPACPI_HOTKEY_MAP_LEN; i++) {
6a38abbf
HMH		 1908 if (hotkey_keycode_map[i] != KEY_RESERVED) {
1909 set_bit(hotkey_keycode_map[i],
1910 tpacpi_inputdev->keybit);
1911 } else {
1912 if (i < sizeof(hotkey_reserved_mask)*8)
1913 hotkey_reserved_mask |= 1 << i;
1914 }
1915 }
1916
5c29d58f
HMH		 1917 if (tp_features.hotkey_wlsw) {
1918 set_bit(EV_SW, tpacpi_inputdev->evbit);
1919 set_bit(SW_RADIO, tpacpi_inputdev->swbit);
1920 }
1921
1a343760
HMH		 1922 dbg_printk(TPACPI_DBG_INIT,
1923 "enabling hot key handling\n");
b2c985e7
HMH		 1924 res = hotkey_status_set(1);
1925 if (res)
1926 return res;
01e88f25
HMH		 1927 res = hotkey_mask_set(((hotkey_all_mask | hotkey_source_mask)
1928 & ~hotkey_reserved_mask)
1a343760 1929 | hotkey_orig_mask);
01e88f25 1930 if (res < 0 && res != -ENXIO)
1a343760 1931 return res;
ff80f137
HMH		 1932
1933 dbg_printk(TPACPI_DBG_INIT,
1934 "legacy hot key reporting over procfs %s\n",
1935 (hotkey_report_mode < 2) ?
1936 "enabled" : "disabled");
01e88f25
HMH		 1937
1938#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
1939 tpacpi_inputdev->open = &hotkey_inputdev_open;
1940 tpacpi_inputdev->close = &hotkey_inputdev_close;
1941
1942 hotkey_poll_setup_safe(1);
1943#endif
56b6aeb0
HMH		 1944 }
1945
d8fd94d9 1946 return (tp_features.hotkey)? 0 : 1;
56b6aeb0
HMH		 1947}
1948
1949static void hotkey_exit(void)
1950{
01e88f25
HMH		 1951#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
1952 hotkey_poll_stop_sync();
1953#endif
1954
d8fd94d9 1955 if (tp_features.hotkey) {
b2c985e7
HMH		 1956 dbg_printk(TPACPI_DBG_EXIT, "restoring original hot key mask\n");
1957 /* no short-circuit boolean operator below! */
1958 if ((hotkey_mask_set(hotkey_orig_mask) |
1959 hotkey_status_set(hotkey_orig_status)) != 0)
1960 printk(IBM_ERR "failed to restore hot key mask to BIOS defaults\n");
5fba344c 1961 }
a0416420
HMH		 1962
1963 if (hotkey_dev_attributes) {
1964 delete_attr_set(hotkey_dev_attributes, &tpacpi_pdev->dev.kobj);
1965 hotkey_dev_attributes = NULL;
1966 }
56b6aeb0
HMH		 1967}
1968
1969static void hotkey_notify(struct ibm_struct *ibm, u32 event)
1970{
6a38abbf 1971 u32 hkey;
b7c8c200 1972 unsigned int scancode;
3eea123d 1973 int send_acpi_ev;
3e5ce914 1974 int ignore_acpi_ev;
3eea123d
HMH		 1975
1976 if (event != 0x80) {
1977 printk(IBM_ERR "unknown HKEY notification event %d\n", event);
1978 /* forward it to userspace, maybe it knows how to handle it */
1979 acpi_bus_generate_netlink_event(ibm->acpi->device->pnp.device_class,
1980 ibm->acpi->device->dev.bus_id,
1981 event, 0);
1982 return;
1983 }
1984
1985 while (1) {
1986 if (!acpi_evalf(hkey_handle, &hkey, "MHKP", "d")) {
1987 printk(IBM_ERR "failed to retrieve HKEY event\n");
1988 return;
1989 }
1990
1991 if (hkey == 0) {
1992 /* queue empty */
1993 return;
1994 }
1995
1996 send_acpi_ev = 0;
3e5ce914 1997 ignore_acpi_ev = 0;
56b6aeb0 1998
ff80f137
HMH		 1999 switch (hkey >> 12) {
2000 case 1:
2001 /* 0x1000-0x1FFF: key presses */
2002 scancode = hkey & 0xfff;
2003 if (scancode > 0 && scancode < 0x21) {
2004 scancode--;
01e88f25
HMH		 2005 if (!(hotkey_source_mask & (1 << scancode))) {
2006 tpacpi_input_send_key(scancode);
2007 } else {
2008 ignore_acpi_ev = 1;
2009 }
ff80f137
HMH		 2010 } else {
2011 printk(IBM_ERR
2012 "hotkey 0x%04x out of range for keyboard map\n",
2013 hkey);
2014 send_acpi_ev = 1;
2015 }
2016 break;
2017 case 5:
2018 /* 0x5000-0x5FFF: LID */
2019 /* we don't handle it through this path, just
2020 * eat up known LID events */
2021 if (hkey != 0x5001 && hkey != 0x5002) {
2022 printk(IBM_ERR
3eea123d
HMH		 2023 "unknown LID-related HKEY event: 0x%04x\n",
2024 hkey);
ff80f137 2025 send_acpi_ev = 1;
3e5ce914
HMH		 2026 } else {
2027 ignore_acpi_ev = 1;
ff80f137
HMH		 2028 }
2029 break;
2030 case 7:
2031 /* 0x7000-0x7FFF: misc */
2032 if (tp_features.hotkey_wlsw && hkey == 0x7000) {
2033 tpacpi_input_send_radiosw();
6a38abbf 2034 break;
6a38abbf 2035 }
ff80f137
HMH		 2036 /* fallthrough to default */
2037 default:
2038 /* case 2: dock-related */
2039 /* 0x2305 - T43 waking up due to bay lever eject while aslept */
2040 /* case 3: ultra-bay related. maybe bay in dock? */
2041 /* 0x3003 - T43 after wake up by bay lever eject (0x2305) */
2042 printk(IBM_NOTICE "unhandled HKEY event 0x%04x\n", hkey);
2043 send_acpi_ev = 1;
6a38abbf 2044 }
ff80f137 2045
3eea123d 2046 /* Legacy events */
3e5ce914 2047 if (!ignore_acpi_ev && (send_acpi_ev || hotkey_report_mode < 2)) {
3eea123d 2048 acpi_bus_generate_proc_event(ibm->acpi->device, event, hkey);
3e5ce914 2049 }
ff80f137 2050
3eea123d 2051 /* netlink events */
3e5ce914 2052 if (!ignore_acpi_ev && send_acpi_ev) {
3eea123d
HMH		 2053 acpi_bus_generate_netlink_event(ibm->acpi->device->pnp.device_class,
2054 ibm->acpi->device->dev.bus_id,
2055 event, hkey);
2056 }
56b6aeb0
HMH		 2057 }
2058}
2059
5c29d58f
HMH		 2060static void hotkey_resume(void)
2061{
b2c985e7
HMH		 2062 if (hotkey_mask_get())
2063 printk(IBM_ERR "error while trying to read hot key mask from firmware\n");
5c29d58f 2064 tpacpi_input_send_radiosw();
01e88f25
HMH		 2065#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
2066 hotkey_poll_setup_safe(0);
2067#endif
5c29d58f
HMH		 2068}
2069
a0416420 2070/* procfs -------------------------------------------------------------- */
78f81cc4 2071static int hotkey_read(char *p)
1da177e4 2072{
ae92bd17 2073 int res, status;
1da177e4
LT		 2074 int len = 0;
2075
d8fd94d9 2076 if (!tp_features.hotkey) {
78f81cc4
BD		 2077 len += sprintf(p + len, "status:\t\tnot supported\n");
2078 return len;
2079 }
2080
fc589a3c
HMH		 2081 if (mutex_lock_interruptible(&hotkey_mutex))
2082 return -ERESTARTSYS;
b2c985e7
HMH		 2083 res = hotkey_status_get(&status);
2084 if (!res)
2085 res = hotkey_mask_get();
40ca9fdf 2086 mutex_unlock(&hotkey_mutex);
b86c4722
HMH		 2087 if (res)
2088 return res;
1da177e4
LT		 2089
2090 len += sprintf(p + len, "status:\t\t%s\n", enabled(status, 0));
d8fd94d9 2091 if (tp_features.hotkey_mask) {
b2c985e7 2092 len += sprintf(p + len, "mask:\t\t0x%08x\n", hotkey_mask);
1da177e4
LT		 2093 len += sprintf(p + len,
2094 "commands:\tenable, disable, reset, <mask>\n");
2095 } else {
2096 len += sprintf(p + len, "mask:\t\tnot supported\n");
2097 len += sprintf(p + len, "commands:\tenable, disable, reset\n");
2098 }
2099
2100 return len;
2101}
2102
78f81cc4 2103static int hotkey_write(char *buf)
1da177e4 2104{
ae92bd17
HMH		 2105 int res, status;
2106 u32 mask;
1da177e4 2107 char *cmd;
1da177e4 2108
d8fd94d9 2109 if (!tp_features.hotkey)
1da177e4
LT		 2110 return -ENODEV;
2111
fc589a3c
HMH		 2112 if (mutex_lock_interruptible(&hotkey_mutex))
2113 return -ERESTARTSYS;
40ca9fdf 2114
b2c985e7
HMH		 2115 status = -1;
2116 mask = hotkey_mask;
78f81cc4 2117
40ca9fdf 2118 res = 0;
1da177e4
LT		 2119 while ((cmd = next_cmd(&buf))) {
2120 if (strlencmp(cmd, "enable") == 0) {
2121 status = 1;
2122 } else if (strlencmp(cmd, "disable") == 0) {
2123 status = 0;
2124 } else if (strlencmp(cmd, "reset") == 0) {
78f81cc4
BD		 2125 status = hotkey_orig_status;
2126 mask = hotkey_orig_mask;
1da177e4
LT		 2127 } else if (sscanf(cmd, "0x%x", &mask) == 1) {
2128 /* mask set */
2129 } else if (sscanf(cmd, "%x", &mask) == 1) {
2130 /* mask set */
40ca9fdf
HMH		 2131 } else {
2132 res = -EINVAL;
2133 goto errexit;
2134 }
1da177e4 2135 }
b2c985e7
HMH		 2136 if (status != -1)
2137 res = hotkey_status_set(status);
1da177e4 2138
b2c985e7
HMH		 2139 if (!res && mask != hotkey_mask)
2140 res = hotkey_mask_set(mask);
1da177e4 2141
40ca9fdf
HMH		 2142errexit:
2143 mutex_unlock(&hotkey_mutex);
2144 return res;
78f81cc4 2145}
1da177e4 2146
1ba90e3a
TR		 2147static const struct acpi_device_id ibm_htk_device_ids[] = {
2148 {IBM_HKEY_HID, 0},
2149 {"", 0},
2150};
2151
8d376cd6 2152static struct tp_acpi_drv_struct ibm_hotkey_acpidriver = {
1ba90e3a 2153 .hid = ibm_htk_device_ids,
8d376cd6
HMH		 2154 .notify = hotkey_notify,
2155 .handle = &hkey_handle,
2156 .type = ACPI_DEVICE_NOTIFY,
2157};
2158
a5763f22
HMH		 2159static struct ibm_struct hotkey_driver_data = {
2160 .name = "hotkey",
a5763f22
HMH		 2161 .read = hotkey_read,
2162 .write = hotkey_write,
2163 .exit = hotkey_exit,
5c29d58f 2164 .resume = hotkey_resume,
8d376cd6 2165 .acpi = &ibm_hotkey_acpidriver,
a5763f22
HMH		 2166};
2167
56b6aeb0
HMH		 2168/*************************************************************************
2169 * Bluetooth subdriver
2170 */
1da177e4 2171
f74a27d4
HMH		 2172enum {
2173 /* ACPI GBDC/SBDC bits */
2174 TP_ACPI_BLUETOOTH_HWPRESENT = 0x01, /* Bluetooth hw available */
2175 TP_ACPI_BLUETOOTH_RADIOSSW = 0x02, /* Bluetooth radio enabled */
2176 TP_ACPI_BLUETOOTH_UNK = 0x04, /* unknown function */
2177};
2178
2179static int bluetooth_get_radiosw(void);
2180static int bluetooth_set_radiosw(int radio_on);
2181
d3a6ade4
HMH		 2182/* sysfs bluetooth enable ---------------------------------------------- */
2183static ssize_t bluetooth_enable_show(struct device *dev,
2184 struct device_attribute *attr,
2185 char *buf)
2186{
2187 int status;
2188
2189 status = bluetooth_get_radiosw();
2190 if (status < 0)
2191 return status;
2192
2193 return snprintf(buf, PAGE_SIZE, "%d\n", status ? 1 : 0);
2194}
2195
2196static ssize_t bluetooth_enable_store(struct device *dev,
2197 struct device_attribute *attr,
2198 const char *buf, size_t count)
2199{
2200 unsigned long t;
2201 int res;
2202
2203 if (parse_strtoul(buf, 1, &t))
2204 return -EINVAL;
2205
2206 res = bluetooth_set_radiosw(t);
2207
2208 return (res) ? res : count;
2209}
2210
2211static struct device_attribute dev_attr_bluetooth_enable =
cc4c24e1 2212 __ATTR(bluetooth_enable, S_IWUSR | S_IRUGO,
d3a6ade4
HMH		 2213 bluetooth_enable_show, bluetooth_enable_store);
2214
2215/* --------------------------------------------------------------------- */
2216
2217static struct attribute *bluetooth_attributes[] = {
2218 &dev_attr_bluetooth_enable.attr,
2219 NULL
2220};
2221
2222static const struct attribute_group bluetooth_attr_group = {
d3a6ade4
HMH		 2223 .attrs = bluetooth_attributes,
2224};
2225
a5763f22 2226static int __init bluetooth_init(struct ibm_init_struct *iibm)
1da177e4 2227{
d3a6ade4 2228 int res;
d6fdd1e9
HMH		 2229 int status = 0;
2230
fe08bc4b
HMH		 2231 vdbg_printk(TPACPI_DBG_INIT, "initializing bluetooth subdriver\n");
2232
8d376cd6 2233 IBM_ACPIHANDLE_INIT(hkey);
5fba344c 2234
78f81cc4
BD		 2235 /* bluetooth not supported on 570, 600e/x, 770e, 770x, A21e, A2xm/p,
2236 G4x, R30, R31, R40e, R50e, T20-22, X20-21 */
d8fd94d9 2237 tp_features.bluetooth = hkey_handle &&
d6fdd1e9
HMH		 2238 acpi_evalf(hkey_handle, &status, "GBDC", "qd");
2239
2240 vdbg_printk(TPACPI_DBG_INIT, "bluetooth is %s, status 0x%02x\n",
2241 str_supported(tp_features.bluetooth),
2242 status);
2243
d3a6ade4
HMH		 2244 if (tp_features.bluetooth) {
2245 if (!(status & TP_ACPI_BLUETOOTH_HWPRESENT)) {
2246 /* no bluetooth hardware present in system */
2247 tp_features.bluetooth = 0;
2248 dbg_printk(TPACPI_DBG_INIT,
2249 "bluetooth hardware not installed\n");
2250 } else {
2251 res = sysfs_create_group(&tpacpi_pdev->dev.kobj,
2252 &bluetooth_attr_group);
2253 if (res)
2254 return res;
2255 }
d6fdd1e9 2256 }
fe08bc4b 2257
d8fd94d9 2258 return (tp_features.bluetooth)? 0 : 1;
1da177e4
LT		 2259}
2260
d3a6ade4
HMH		 2261static void bluetooth_exit(void)
2262{
2263 sysfs_remove_group(&tpacpi_pdev->dev.kobj,
2264 &bluetooth_attr_group);
2265}
2266
d6fdd1e9 2267static int bluetooth_get_radiosw(void)
1da177e4
LT		 2268{
2269 int status;
2270
d6fdd1e9
HMH		 2271 if (!tp_features.bluetooth)
2272 return -ENODEV;
1da177e4 2273
d6fdd1e9
HMH		 2274 if (!acpi_evalf(hkey_handle, &status, "GBDC", "d"))
2275 return -EIO;
2276
2277 return ((status & TP_ACPI_BLUETOOTH_RADIOSSW) != 0);
2278}
2279
2280static int bluetooth_set_radiosw(int radio_on)
2281{
2282 int status;
2283
2284 if (!tp_features.bluetooth)
2285 return -ENODEV;
2286
2287 if (!acpi_evalf(hkey_handle, &status, "GBDC", "d"))
2288 return -EIO;
2289 if (radio_on)
2290 status |= TP_ACPI_BLUETOOTH_RADIOSSW;
2291 else
2292 status &= ~TP_ACPI_BLUETOOTH_RADIOSSW;
2293 if (!acpi_evalf(hkey_handle, NULL, "SBDC", "vd", status))
2294 return -EIO;
2295
2296 return 0;
1da177e4
LT		 2297}
2298
d3a6ade4 2299/* procfs -------------------------------------------------------------- */
78f81cc4 2300static int bluetooth_read(char *p)
1da177e4
LT		 2301{
2302 int len = 0;
d6fdd1e9 2303 int status = bluetooth_get_radiosw();
1da177e4 2304
d8fd94d9 2305 if (!tp_features.bluetooth)
1da177e4 2306 len += sprintf(p + len, "status:\t\tnot supported\n");
1da177e4 2307 else {
d6fdd1e9
HMH		 2308 len += sprintf(p + len, "status:\t\t%s\n",
2309 (status)? "enabled" : "disabled");
1da177e4
LT		 2310 len += sprintf(p + len, "commands:\tenable, disable\n");
2311 }
2312
2313 return len;
2314}
2315
78f81cc4 2316static int bluetooth_write(char *buf)
1da177e4 2317{
1da177e4 2318 char *cmd;
1da177e4 2319
d8fd94d9 2320 if (!tp_features.bluetooth)
78f81cc4 2321 return -ENODEV;
1da177e4
LT		 2322
2323 while ((cmd = next_cmd(&buf))) {
2324 if (strlencmp(cmd, "enable") == 0) {
d6fdd1e9 2325 bluetooth_set_radiosw(1);
1da177e4 2326 } else if (strlencmp(cmd, "disable") == 0) {
d6fdd1e9 2327 bluetooth_set_radiosw(0);
1da177e4
LT		 2328 } else
2329 return -EINVAL;
1da177e4
LT		 2330 }
2331
1da177e4
LT		 2332 return 0;
2333}
2334
a5763f22
HMH		 2335static struct ibm_struct bluetooth_driver_data = {
2336 .name = "bluetooth",
2337 .read = bluetooth_read,
2338 .write = bluetooth_write,
d3a6ade4 2339 .exit = bluetooth_exit,
a5763f22
HMH		 2340};
2341
56b6aeb0
HMH		 2342/*************************************************************************
2343 * Wan subdriver
2344 */
2345
f74a27d4
HMH		 2346enum {
2347 /* ACPI GWAN/SWAN bits */
2348 TP_ACPI_WANCARD_HWPRESENT = 0x01, /* Wan hw available */
2349 TP_ACPI_WANCARD_RADIOSSW = 0x02, /* Wan radio enabled */
2350 TP_ACPI_WANCARD_UNK = 0x04, /* unknown function */
2351};
2352
2353static int wan_get_radiosw(void);
2354static int wan_set_radiosw(int radio_on);
2355
d3a6ade4
HMH		 2356/* sysfs wan enable ---------------------------------------------------- */
2357static ssize_t wan_enable_show(struct device *dev,
2358 struct device_attribute *attr,
2359 char *buf)
2360{
2361 int status;
2362
2363 status = wan_get_radiosw();
2364 if (status < 0)
2365 return status;
2366
2367 return snprintf(buf, PAGE_SIZE, "%d\n", status ? 1 : 0);
2368}
2369
2370static ssize_t wan_enable_store(struct device *dev,
2371 struct device_attribute *attr,
2372 const char *buf, size_t count)
2373{
2374 unsigned long t;
2375 int res;
2376
2377 if (parse_strtoul(buf, 1, &t))
2378 return -EINVAL;
2379
2380 res = wan_set_radiosw(t);
2381
2382 return (res) ? res : count;
2383}
2384
2385static struct device_attribute dev_attr_wan_enable =
cc4c24e1 2386 __ATTR(wwan_enable, S_IWUSR | S_IRUGO,
d3a6ade4
HMH		 2387 wan_enable_show, wan_enable_store);
2388
2389/* --------------------------------------------------------------------- */
2390
2391static struct attribute *wan_attributes[] = {
2392 &dev_attr_wan_enable.attr,
2393 NULL
2394};
2395
2396static const struct attribute_group wan_attr_group = {
d3a6ade4
HMH		 2397 .attrs = wan_attributes,
2398};
2399
a5763f22 2400static int __init wan_init(struct ibm_init_struct *iibm)
42adb53c 2401{
d3a6ade4 2402 int res;
d6fdd1e9
HMH		 2403 int status = 0;
2404
fe08bc4b
HMH		 2405 vdbg_printk(TPACPI_DBG_INIT, "initializing wan subdriver\n");
2406
8d376cd6 2407 IBM_ACPIHANDLE_INIT(hkey);
5fba344c 2408
d8fd94d9 2409 tp_features.wan = hkey_handle &&
d6fdd1e9
HMH		 2410 acpi_evalf(hkey_handle, &status, "GWAN", "qd");
2411
2412 vdbg_printk(TPACPI_DBG_INIT, "wan is %s, status 0x%02x\n",
2413 str_supported(tp_features.wan),
2414 status);
2415
d3a6ade4
HMH		 2416 if (tp_features.wan) {
2417 if (!(status & TP_ACPI_WANCARD_HWPRESENT)) {
2418 /* no wan hardware present in system */
2419 tp_features.wan = 0;
2420 dbg_printk(TPACPI_DBG_INIT,
2421 "wan hardware not installed\n");
2422 } else {
2423 res = sysfs_create_group(&tpacpi_pdev->dev.kobj,
2424 &wan_attr_group);
2425 if (res)
2426 return res;
2427 }
d6fdd1e9 2428 }
fe08bc4b 2429
d8fd94d9 2430 return (tp_features.wan)? 0 : 1;
42adb53c
JF		 2431}
2432
d3a6ade4
HMH		 2433static void wan_exit(void)
2434{
2435 sysfs_remove_group(&tpacpi_pdev->dev.kobj,
2436 &wan_attr_group);
2437}
2438
d6fdd1e9 2439static int wan_get_radiosw(void)
42adb53c
JF		 2440{
2441 int status;
2442
d6fdd1e9
HMH		 2443 if (!tp_features.wan)
2444 return -ENODEV;
42adb53c 2445
d6fdd1e9
HMH		 2446 if (!acpi_evalf(hkey_handle, &status, "GWAN", "d"))
2447 return -EIO;
2448
2449 return ((status & TP_ACPI_WANCARD_RADIOSSW) != 0);
2450}
2451
2452static int wan_set_radiosw(int radio_on)
2453{
2454 int status;
2455
2456 if (!tp_features.wan)
2457 return -ENODEV;
2458
2459 if (!acpi_evalf(hkey_handle, &status, "GWAN", "d"))
2460 return -EIO;
2461 if (radio_on)
2462 status |= TP_ACPI_WANCARD_RADIOSSW;
2463 else
2464 status &= ~TP_ACPI_WANCARD_RADIOSSW;
2465 if (!acpi_evalf(hkey_handle, NULL, "SWAN", "vd", status))
2466 return -EIO;
2467
2468 return 0;
42adb53c
JF		 2469}
2470
d3a6ade4 2471/* procfs -------------------------------------------------------------- */
42adb53c
JF		 2472static int wan_read(char *p)
2473{
2474 int len = 0;
d6fdd1e9 2475 int status = wan_get_radiosw();
42adb53c 2476
d8fd94d9 2477 if (!tp_features.wan)
42adb53c 2478 len += sprintf(p + len, "status:\t\tnot supported\n");
42adb53c 2479 else {
d6fdd1e9
HMH		 2480 len += sprintf(p + len, "status:\t\t%s\n",
2481 (status)? "enabled" : "disabled");
42adb53c
JF		 2482 len += sprintf(p + len, "commands:\tenable, disable\n");
2483 }
2484
2485 return len;
2486}
2487
2488static int wan_write(char *buf)
2489{
42adb53c 2490 char *cmd;
42adb53c 2491
d8fd94d9 2492 if (!tp_features.wan)
42adb53c
JF		 2493 return -ENODEV;
2494
2495 while ((cmd = next_cmd(&buf))) {
2496 if (strlencmp(cmd, "enable") == 0) {
d6fdd1e9 2497 wan_set_radiosw(1);
42adb53c 2498 } else if (strlencmp(cmd, "disable") == 0) {
d6fdd1e9 2499 wan_set_radiosw(0);
42adb53c
JF		 2500 } else
2501 return -EINVAL;
42adb53c
JF		 2502 }
2503
42adb53c
JF		 2504 return 0;
2505}
2506
a5763f22
HMH		 2507static struct ibm_struct wan_driver_data = {
2508 .name = "wan",
2509 .read = wan_read,
2510 .write = wan_write,
d3a6ade4 2511 .exit = wan_exit,
92641177 2512 .flags.experimental = 1,
a5763f22
HMH		 2513};
2514
56b6aeb0
HMH		 2515/*************************************************************************
2516 * Video subdriver
2517 */
2518
f74a27d4
HMH		 2519enum video_access_mode {
2520 TPACPI_VIDEO_NONE = 0,
2521 TPACPI_VIDEO_570, /* 570 */
2522 TPACPI_VIDEO_770, /* 600e/x, 770e, 770x */
2523 TPACPI_VIDEO_NEW, /* all others */
2524};
2525
2526enum { /* video status flags, based on VIDEO_570 */
2527 TP_ACPI_VIDEO_S_LCD = 0x01, /* LCD output enabled */
2528 TP_ACPI_VIDEO_S_CRT = 0x02, /* CRT output enabled */
2529 TP_ACPI_VIDEO_S_DVI = 0x08, /* DVI output enabled */
2530};
2531
2532enum { /* TPACPI_VIDEO_570 constants */
2533 TP_ACPI_VIDEO_570_PHSCMD = 0x87, /* unknown magic constant :( */
2534 TP_ACPI_VIDEO_570_PHSMASK = 0x03, /* PHS bits that map to
2535 * video_status_flags */
2536 TP_ACPI_VIDEO_570_PHS2CMD = 0x8b, /* unknown magic constant :( */
2537 TP_ACPI_VIDEO_570_PHS2SET = 0x80, /* unknown magic constant :( */
2538};
2539
9a8e1738
HMH		 2540static enum video_access_mode video_supported;
2541static int video_orig_autosw;
78f81cc4 2542
f74a27d4
HMH		 2543static int video_autosw_get(void);
2544static int video_autosw_set(int enable);
2545
56b6aeb0
HMH		 2546IBM_HANDLE(vid, root, "\\_SB.PCI.AGP.VGA", /* 570 */
2547 "\\_SB.PCI0.AGP0.VID0", /* 600e/x, 770x */
2548 "\\_SB.PCI0.VID0", /* 770e */
2549 "\\_SB.PCI0.VID", /* A21e, G4x, R50e, X30, X40 */
2550 "\\_SB.PCI0.AGP.VID", /* all others */
2551 ); /* R30, R31 */
2552
2553IBM_HANDLE(vid2, root, "\\_SB.PCI0.AGPB.VID"); /* G41 */
2554
a5763f22 2555static int __init video_init(struct ibm_init_struct *iibm)
1da177e4 2556{
78f81cc4
BD		 2557 int ivga;
2558
fe08bc4b
HMH		 2559 vdbg_printk(TPACPI_DBG_INIT, "initializing video subdriver\n");
2560
8d376cd6
HMH		 2561 IBM_ACPIHANDLE_INIT(vid);
2562 IBM_ACPIHANDLE_INIT(vid2);
5fba344c 2563
78f81cc4
BD		 2564 if (vid2_handle && acpi_evalf(NULL, &ivga, "\\IVGA", "d") && ivga)
2565 /* G41, assume IVGA doesn't change */
2566 vid_handle = vid2_handle;
2567
2568 if (!vid_handle)
2569 /* video switching not supported on R30, R31 */
efa27145 2570 video_supported = TPACPI_VIDEO_NONE;
78f81cc4
BD		 2571 else if (acpi_evalf(vid_handle, &video_orig_autosw, "SWIT", "qd"))
2572 /* 570 */
efa27145 2573 video_supported = TPACPI_VIDEO_570;
78f81cc4
BD		 2574 else if (acpi_evalf(vid_handle, &video_orig_autosw, "^VADL", "qd"))
2575 /* 600e/x, 770e, 770x */
efa27145 2576 video_supported = TPACPI_VIDEO_770;
78f81cc4
BD		 2577 else
2578 /* all others */
efa27145 2579 video_supported = TPACPI_VIDEO_NEW;
1da177e4 2580
fe08bc4b
HMH		 2581 vdbg_printk(TPACPI_DBG_INIT, "video is %s, mode %d\n",
2582 str_supported(video_supported != TPACPI_VIDEO_NONE),
2583 video_supported);
2584
5fba344c 2585 return (video_supported != TPACPI_VIDEO_NONE)? 0 : 1;
1da177e4
LT		 2586}
2587
56b6aeb0
HMH		 2588static void video_exit(void)
2589{
83f34724
HMH		 2590 dbg_printk(TPACPI_DBG_EXIT,
2591 "restoring original video autoswitch mode\n");
2592 if (video_autosw_set(video_orig_autosw))
2593 printk(IBM_ERR "error while trying to restore original "
2594 "video autoswitch mode\n");
56b6aeb0
HMH		 2595}
2596
83f34724 2597static int video_outputsw_get(void)
1da177e4
LT		 2598{
2599 int status = 0;
2600 int i;
2601
83f34724
HMH		 2602 switch (video_supported) {
2603 case TPACPI_VIDEO_570:
2604 if (!acpi_evalf(NULL, &i, "\\_SB.PHS", "dd",
2605 TP_ACPI_VIDEO_570_PHSCMD))
2606 return -EIO;
2607 status = i & TP_ACPI_VIDEO_570_PHSMASK;
2608 break;
2609 case TPACPI_VIDEO_770:
2610 if (!acpi_evalf(NULL, &i, "\\VCDL", "d"))
2611 return -EIO;
2612 if (i)
2613 status |= TP_ACPI_VIDEO_S_LCD;
2614 if (!acpi_evalf(NULL, &i, "\\VCDC", "d"))
2615 return -EIO;
2616 if (i)
2617 status |= TP_ACPI_VIDEO_S_CRT;
2618 break;
2619 case TPACPI_VIDEO_NEW:
2620 if (!acpi_evalf(NULL, NULL, "\\VUPS", "vd", 1) ||
2621 !acpi_evalf(NULL, &i, "\\VCDC", "d"))
2622 return -EIO;
2623 if (i)
2624 status |= TP_ACPI_VIDEO_S_CRT;
2625
2626 if (!acpi_evalf(NULL, NULL, "\\VUPS", "vd", 0) ||
2627 !acpi_evalf(NULL, &i, "\\VCDL", "d"))
2628 return -EIO;
2629 if (i)
2630 status |= TP_ACPI_VIDEO_S_LCD;
2631 if (!acpi_evalf(NULL, &i, "\\VCDD", "d"))
2632 return -EIO;
2633 if (i)
2634 status |= TP_ACPI_VIDEO_S_DVI;
2635 break;
2636 default:
2637 return -ENOSYS;
78f81cc4
BD		 2638 }
2639
2640 return status;
2641}
1da177e4 2642
83f34724 2643static int video_outputsw_set(int status)
78f81cc4 2644{
83f34724
HMH		 2645 int autosw;
2646 int res = 0;
2647
2648 switch (video_supported) {
2649 case TPACPI_VIDEO_570:
2650 res = acpi_evalf(NULL, NULL,
2651 "\\_SB.PHS2", "vdd",
2652 TP_ACPI_VIDEO_570_PHS2CMD,
2653 status | TP_ACPI_VIDEO_570_PHS2SET);
2654 break;
2655 case TPACPI_VIDEO_770:
2656 autosw = video_autosw_get();
2657 if (autosw < 0)
2658 return autosw;
1da177e4 2659
83f34724
HMH		 2660 res = video_autosw_set(1);
2661 if (res)
2662 return res;
2663 res = acpi_evalf(vid_handle, NULL,
2664 "ASWT", "vdd", status * 0x100, 0);
2665 if (!autosw && video_autosw_set(autosw)) {
2666 printk(IBM_ERR "video auto-switch left enabled due to error\n");
2667 return -EIO;
2668 }
2669 break;
2670 case TPACPI_VIDEO_NEW:
2671 res = acpi_evalf(NULL, NULL, "\\VUPS", "vd", 0x80) &&
2672 acpi_evalf(NULL, NULL, "\\VSDS", "vdd", status, 1);
2673 break;
2674 default:
2675 return -ENOSYS;
2676 }
1da177e4 2677
83f34724 2678 return (res)? 0 : -EIO;
1da177e4
LT		 2679}
2680
83f34724 2681static int video_autosw_get(void)
78f81cc4 2682{
83f34724 2683 int autosw = 0;
78f81cc4 2684
83f34724
HMH		 2685 switch (video_supported) {
2686 case TPACPI_VIDEO_570:
2687 if (!acpi_evalf(vid_handle, &autosw, "SWIT", "d"))
2688 return -EIO;
2689 break;
2690 case TPACPI_VIDEO_770:
2691 case TPACPI_VIDEO_NEW:
2692 if (!acpi_evalf(vid_handle, &autosw, "^VDEE", "d"))
2693 return -EIO;
2694 break;
2695 default:
2696 return -ENOSYS;
2697 }
78f81cc4 2698
83f34724 2699 return autosw & 1;
78f81cc4
BD		 2700}
2701
83f34724 2702static int video_autosw_set(int enable)
78f81cc4 2703{
83f34724
HMH		 2704 if (!acpi_evalf(vid_handle, NULL, "_DOS", "vd", (enable)? 1 : 0))
2705 return -EIO;
2706 return 0;
78f81cc4
BD		 2707}
2708
83f34724 2709static int video_outputsw_cycle(void)
78f81cc4 2710{
83f34724
HMH		 2711 int autosw = video_autosw_get();
2712 int res;
78f81cc4 2713
83f34724
HMH		 2714 if (autosw < 0)
2715 return autosw;
78f81cc4 2716
83f34724
HMH		 2717 switch (video_supported) {
2718 case TPACPI_VIDEO_570:
2719 res = video_autosw_set(1);
2720 if (res)
2721 return res;
2722 res = acpi_evalf(ec_handle, NULL, "_Q16", "v");
2723 break;
2724 case TPACPI_VIDEO_770:
2725 case TPACPI_VIDEO_NEW:
2726 res = video_autosw_set(1);
2727 if (res)
2728 return res;
2729 res = acpi_evalf(vid_handle, NULL, "VSWT", "v");
2730 break;
2731 default:
2732 return -ENOSYS;
2733 }
2734 if (!autosw && video_autosw_set(autosw)) {
2735 printk(IBM_ERR "video auto-switch left enabled due to error\n");
2736 return -EIO;
78f81cc4
BD		 2737 }
2738
83f34724
HMH		 2739 return (res)? 0 : -EIO;
2740}
2741
2742static int video_expand_toggle(void)
2743{
2744 switch (video_supported) {
2745 case TPACPI_VIDEO_570:
2746 return acpi_evalf(ec_handle, NULL, "_Q17", "v")?
2747 0 : -EIO;
2748 case TPACPI_VIDEO_770:
2749 return acpi_evalf(vid_handle, NULL, "VEXP", "v")?
2750 0 : -EIO;
2751 case TPACPI_VIDEO_NEW:
2752 return acpi_evalf(NULL, NULL, "\\VEXP", "v")?
2753 0 : -EIO;
2754 default:
2755 return -ENOSYS;
2756 }
2757 /* not reached */
78f81cc4
BD		 2758}
2759
56b6aeb0
HMH		 2760static int video_read(char *p)
2761{
83f34724 2762 int status, autosw;
56b6aeb0
HMH		 2763 int len = 0;
2764
83f34724 2765 if (video_supported == TPACPI_VIDEO_NONE) {
56b6aeb0
HMH		 2766 len += sprintf(p + len, "status:\t\tnot supported\n");
2767 return len;
2768 }
2769
83f34724
HMH		 2770 status = video_outputsw_get();
2771 if (status < 0)
2772 return status;
2773
2774 autosw = video_autosw_get();
2775 if (autosw < 0)
2776 return autosw;
2777
56b6aeb0
HMH		 2778 len += sprintf(p + len, "status:\t\tsupported\n");
2779 len += sprintf(p + len, "lcd:\t\t%s\n", enabled(status, 0));
2780 len += sprintf(p + len, "crt:\t\t%s\n", enabled(status, 1));
efa27145 2781 if (video_supported == TPACPI_VIDEO_NEW)
56b6aeb0
HMH		 2782 len += sprintf(p + len, "dvi:\t\t%s\n", enabled(status, 3));
2783 len += sprintf(p + len, "auto:\t\t%s\n", enabled(autosw, 0));
2784 len += sprintf(p + len, "commands:\tlcd_enable, lcd_disable\n");
2785 len += sprintf(p + len, "commands:\tcrt_enable, crt_disable\n");
efa27145 2786 if (video_supported == TPACPI_VIDEO_NEW)
56b6aeb0
HMH		 2787 len += sprintf(p + len, "commands:\tdvi_enable, dvi_disable\n");
2788 len += sprintf(p + len, "commands:\tauto_enable, auto_disable\n");
2789 len += sprintf(p + len, "commands:\tvideo_switch, expand_toggle\n");
2790
2791 return len;
2792}
2793
78f81cc4 2794static int video_write(char *buf)
1da177e4
LT		 2795{
2796 char *cmd;
2797 int enable, disable, status;
83f34724 2798 int res;
1da177e4 2799
83f34724 2800 if (video_supported == TPACPI_VIDEO_NONE)
78f81cc4
BD		 2801 return -ENODEV;
2802
83f34724
HMH		 2803 enable = 0;
2804 disable = 0;
1da177e4
LT		 2805
2806 while ((cmd = next_cmd(&buf))) {
2807 if (strlencmp(cmd, "lcd_enable") == 0) {
83f34724 2808 enable |= TP_ACPI_VIDEO_S_LCD;
1da177e4 2809 } else if (strlencmp(cmd, "lcd_disable") == 0) {
83f34724 2810 disable |= TP_ACPI_VIDEO_S_LCD;
1da177e4 2811 } else if (strlencmp(cmd, "crt_enable") == 0) {
83f34724 2812 enable |= TP_ACPI_VIDEO_S_CRT;
1da177e4 2813 } else if (strlencmp(cmd, "crt_disable") == 0) {
83f34724 2814 disable |= TP_ACPI_VIDEO_S_CRT;
efa27145 2815 } else if (video_supported == TPACPI_VIDEO_NEW &&
78f81cc4 2816 strlencmp(cmd, "dvi_enable") == 0) {
83f34724 2817 enable |= TP_ACPI_VIDEO_S_DVI;
efa27145 2818 } else if (video_supported == TPACPI_VIDEO_NEW &&
78f81cc4 2819 strlencmp(cmd, "dvi_disable") == 0) {
83f34724 2820 disable |= TP_ACPI_VIDEO_S_DVI;
1da177e4 2821 } else if (strlencmp(cmd, "auto_enable") == 0) {
83f34724
HMH		 2822 res = video_autosw_set(1);
2823 if (res)
2824 return res;
1da177e4 2825 } else if (strlencmp(cmd, "auto_disable") == 0) {
83f34724
HMH		 2826 res = video_autosw_set(0);
2827 if (res)
2828 return res;
1da177e4 2829 } else if (strlencmp(cmd, "video_switch") == 0) {
83f34724
HMH		 2830 res = video_outputsw_cycle();
2831 if (res)
2832 return res;
1da177e4 2833 } else if (strlencmp(cmd, "expand_toggle") == 0) {
83f34724
HMH		 2834 res = video_expand_toggle();
2835 if (res)
2836 return res;
1da177e4
LT		 2837 } else
2838 return -EINVAL;
2839 }
2840
2841 if (enable || disable) {
83f34724
HMH		 2842 status = video_outputsw_get();
2843 if (status < 0)
2844 return status;
2845 res = video_outputsw_set((status & ~disable) | enable);
2846 if (res)
2847 return res;
1da177e4
LT		 2848 }
2849
2850 return 0;
2851}
2852
a5763f22
HMH		 2853static struct ibm_struct video_driver_data = {
2854 .name = "video",
2855 .read = video_read,
2856 .write = video_write,
2857 .exit = video_exit,
2858};
2859
56b6aeb0
HMH		 2860/*************************************************************************
2861 * Light (thinklight) subdriver
2862 */
1da177e4 2863
56b6aeb0
HMH		 2864IBM_HANDLE(lght, root, "\\LGHT"); /* A21e, A2xm/p, T20-22, X20-21 */
2865IBM_HANDLE(ledb, ec, "LEDB"); /* G4x */
2866
a5763f22 2867static int __init light_init(struct ibm_init_struct *iibm)
1da177e4 2868{
fe08bc4b
HMH		 2869 vdbg_printk(TPACPI_DBG_INIT, "initializing light subdriver\n");
2870
8d376cd6
HMH		 2871 IBM_ACPIHANDLE_INIT(ledb);
2872 IBM_ACPIHANDLE_INIT(lght);
2873 IBM_ACPIHANDLE_INIT(cmos);
5fba344c 2874
78f81cc4 2875 /* light not supported on 570, 600e/x, 770e, 770x, G4x, R30, R31 */
d8fd94d9 2876 tp_features.light = (cmos_handle || lght_handle) && !ledb_handle;
78f81cc4 2877
d8fd94d9 2878 if (tp_features.light)
78f81cc4
BD		 2879 /* light status not supported on
2880 570, 600e/x, 770e, 770x, G4x, R30, R31, R32, X20 */
d8fd94d9
HMH		 2881 tp_features.light_status =
2882 acpi_evalf(ec_handle, NULL, "KBLT", "qv");
1da177e4 2883
fe08bc4b 2884 vdbg_printk(TPACPI_DBG_INIT, "light is %s\n",
d8fd94d9 2885 str_supported(tp_features.light));
fe08bc4b 2886
d8fd94d9 2887 return (tp_features.light)? 0 : 1;
1da177e4
LT		 2888}
2889
78f81cc4 2890static int light_read(char *p)
1da177e4
LT		 2891{
2892 int len = 0;
2893 int status = 0;
2894
d8fd94d9 2895 if (!tp_features.light) {
78f81cc4 2896 len += sprintf(p + len, "status:\t\tnot supported\n");
d8fd94d9 2897 } else if (!tp_features.light_status) {
78f81cc4
BD		 2898 len += sprintf(p + len, "status:\t\tunknown\n");
2899 len += sprintf(p + len, "commands:\ton, off\n");
2900 } else {
1da177e4
LT		 2901 if (!acpi_evalf(ec_handle, &status, "KBLT", "d"))
2902 return -EIO;
2903 len += sprintf(p + len, "status:\t\t%s\n", onoff(status, 0));
78f81cc4
BD		 2904 len += sprintf(p + len, "commands:\ton, off\n");
2905 }
1da177e4
LT		 2906
2907 return len;
2908}
2909
78f81cc4 2910static int light_write(char *buf)
1da177e4
LT		 2911{
2912 int cmos_cmd, lght_cmd;
2913 char *cmd;
2914 int success;
78f81cc4 2915
d8fd94d9 2916 if (!tp_features.light)
78f81cc4
BD		 2917 return -ENODEV;
2918
1da177e4
LT		 2919 while ((cmd = next_cmd(&buf))) {
2920 if (strlencmp(cmd, "on") == 0) {
2921 cmos_cmd = 0x0c;
2922 lght_cmd = 1;
2923 } else if (strlencmp(cmd, "off") == 0) {
2924 cmos_cmd = 0x0d;
2925 lght_cmd = 0;
2926 } else
2927 return -EINVAL;
78f81cc4 2928
1da177e4 2929 success = cmos_handle ?
78f81cc4
BD		 2930 acpi_evalf(cmos_handle, NULL, NULL, "vd", cmos_cmd) :
2931 acpi_evalf(lght_handle, NULL, NULL, "vd", lght_cmd);
1da177e4
LT		 2932 if (!success)
2933 return -EIO;
2934 }
2935
2936 return 0;
2937}
2938
a5763f22
HMH		 2939static struct ibm_struct light_driver_data = {
2940 .name = "light",
2941 .read = light_read,
2942 .write = light_write,
2943};
2944
56b6aeb0
HMH		 2945/*************************************************************************
2946 * Dock subdriver
2947 */
1da177e4 2948
85998248 2949#ifdef CONFIG_THINKPAD_ACPI_DOCK
56b6aeb0 2950
f74a27d4
HMH		 2951static void dock_notify(struct ibm_struct *ibm, u32 event);
2952static int dock_read(char *p);
2953static int dock_write(char *buf);
2954
56b6aeb0
HMH		 2955IBM_HANDLE(dock, root, "\\_SB.GDCK", /* X30, X31, X40 */
2956 "\\_SB.PCI0.DOCK", /* 600e/x,770e,770x,A2xm/p,T20-22,X20-21 */
2957 "\\_SB.PCI0.PCI1.DOCK", /* all others */
2958 "\\_SB.PCI.ISA.SLCE", /* 570 */
2959 ); /* A21e,G4x,R30,R31,R32,R40,R40e,R50e */
2960
5fba344c
HMH		 2961/* don't list other alternatives as we install a notify handler on the 570 */
2962IBM_HANDLE(pci, root, "\\_SB.PCI"); /* 570 */
2963
1ba90e3a
TR		 2964static const struct acpi_device_id ibm_pci_device_ids[] = {
2965 {PCI_ROOT_HID_STRING, 0},
2966 {"", 0},
2967};
2968
d94a7f16
HMH		 2969static struct tp_acpi_drv_struct ibm_dock_acpidriver[2] = {
2970 {
2971 .notify = dock_notify,
2972 .handle = &dock_handle,
2973 .type = ACPI_SYSTEM_NOTIFY,
2974 },
2975 {
996fba08
HMH		 2976 /* THIS ONE MUST NEVER BE USED FOR DRIVER AUTOLOADING.
2977 * We just use it to get notifications of dock hotplug
2978 * in very old thinkpads */
1ba90e3a 2979 .hid = ibm_pci_device_ids,
d94a7f16
HMH		 2980 .notify = dock_notify,
2981 .handle = &pci_handle,
2982 .type = ACPI_SYSTEM_NOTIFY,
2983 },
2984};
2985
2986static struct ibm_struct dock_driver_data[2] = {
2987 {
2988 .name = "dock",
2989 .read = dock_read,
2990 .write = dock_write,
2991 .acpi = &ibm_dock_acpidriver[0],
2992 },
2993 {
2994 .name = "dock",
2995 .acpi = &ibm_dock_acpidriver[1],
2996 },
2997};
2998
1da177e4
LT		 2999#define dock_docked() (_sta(dock_handle) & 1)
3000
a5763f22 3001static int __init dock_init(struct ibm_init_struct *iibm)
5fba344c 3002{
fe08bc4b
HMH		 3003 vdbg_printk(TPACPI_DBG_INIT, "initializing dock subdriver\n");
3004
8d376cd6 3005 IBM_ACPIHANDLE_INIT(dock);
5fba344c 3006
fe08bc4b
HMH		 3007 vdbg_printk(TPACPI_DBG_INIT, "dock is %s\n",
3008 str_supported(dock_handle != NULL));
3009
5fba344c
HMH		 3010 return (dock_handle)? 0 : 1;
3011}
3012
d94a7f16
HMH		 3013static int __init dock_init2(struct ibm_init_struct *iibm)
3014{
3015 int dock2_needed;
3016
3017 vdbg_printk(TPACPI_DBG_INIT, "initializing dock subdriver part 2\n");
3018
3019 if (dock_driver_data[0].flags.acpi_driver_registered &&
3020 dock_driver_data[0].flags.acpi_notify_installed) {
3021 IBM_ACPIHANDLE_INIT(pci);
3022 dock2_needed = (pci_handle != NULL);
3023 vdbg_printk(TPACPI_DBG_INIT,
3024 "dock PCI handler for the TP 570 is %s\n",
3025 str_supported(dock2_needed));
3026 } else {
3027 vdbg_printk(TPACPI_DBG_INIT,
3028 "dock subdriver part 2 not required\n");
3029 dock2_needed = 0;
3030 }
3031
3032 return (dock2_needed)? 0 : 1;
3033}
3034
56b6aeb0
HMH		 3035static void dock_notify(struct ibm_struct *ibm, u32 event)
3036{
3037 int docked = dock_docked();
1ba90e3a
TR		 3038 int pci = ibm->acpi->hid && ibm->acpi->device &&
3039 acpi_match_device_ids(ibm->acpi->device, ibm_pci_device_ids);
962ce8ca 3040 int data;
56b6aeb0
HMH		 3041
3042 if (event == 1 && !pci) /* 570 */
962ce8ca 3043 data = 1; /* button */
56b6aeb0 3044 else if (event == 1 && pci) /* 570 */
962ce8ca 3045 data = 3; /* dock */
56b6aeb0 3046 else if (event == 3 && docked)
962ce8ca 3047 data = 1; /* button */
56b6aeb0 3048 else if (event == 3 && !docked)
962ce8ca 3049 data = 2; /* undock */
56b6aeb0 3050 else if (event == 0 && docked)
962ce8ca 3051 data = 3; /* dock */
56b6aeb0
HMH		 3052 else {
3053 printk(IBM_ERR "unknown dock event %d, status %d\n",
3054 event, _sta(dock_handle));
962ce8ca 3055 data = 0; /* unknown */
56b6aeb0 3056 }
14e04fb3 3057 acpi_bus_generate_proc_event(ibm->acpi->device, event, data);
962ce8ca
ZR		 3058 acpi_bus_generate_netlink_event(ibm->acpi->device->pnp.device_class,
3059 ibm->acpi->device->dev.bus_id,
3060 event, data);
56b6aeb0
HMH		 3061}
3062
78f81cc4 3063static int dock_read(char *p)
1da177e4
LT		 3064{
3065 int len = 0;
3066 int docked = dock_docked();
3067
3068 if (!dock_handle)
3069 len += sprintf(p + len, "status:\t\tnot supported\n");
3070 else if (!docked)
3071 len += sprintf(p + len, "status:\t\tundocked\n");
3072 else {
3073 len += sprintf(p + len, "status:\t\tdocked\n");
3074 len += sprintf(p + len, "commands:\tdock, undock\n");
3075 }
3076
3077 return len;
3078}
3079
78f81cc4 3080static int dock_write(char *buf)
1da177e4
LT		 3081{
3082 char *cmd;
3083
3084 if (!dock_docked())
78f81cc4 3085 return -ENODEV;
1da177e4
LT		 3086
3087 while ((cmd = next_cmd(&buf))) {
3088 if (strlencmp(cmd, "undock") == 0) {
78f81cc4
BD		 3089 if (!acpi_evalf(dock_handle, NULL, "_DCK", "vd", 0) ||
3090 !acpi_evalf(dock_handle, NULL, "_EJ0", "vd", 1))
56b6aeb0
HMH		 3091 return -EIO;
3092 } else if (strlencmp(cmd, "dock") == 0) {
3093 if (!acpi_evalf(dock_handle, NULL, "_DCK", "vd", 1))
3094 return -EIO;
3095 } else
3096 return -EINVAL;
1da177e4 3097 }
56b6aeb0
HMH		 3098
3099 return 0;
1da177e4 3100}
56b6aeb0 3101
85998248 3102#endif /* CONFIG_THINKPAD_ACPI_DOCK */
56b6aeb0
HMH		 3103
3104/*************************************************************************
3105 * Bay subdriver
3106 */
1da177e4 3107
85998248 3108#ifdef CONFIG_THINKPAD_ACPI_BAY
f74a27d4 3109
56b6aeb0
HMH		 3110IBM_HANDLE(bay, root, "\\_SB.PCI.IDE.SECN.MAST", /* 570 */
3111 "\\_SB.PCI0.IDE0.IDES.IDSM", /* 600e/x, 770e, 770x */
3112 "\\_SB.PCI0.SATA.SCND.MSTR", /* T60, X60, Z60 */
3113 "\\_SB.PCI0.IDE0.SCND.MSTR", /* all others */
3114 ); /* A21e, R30, R31 */
3115IBM_HANDLE(bay_ej, bay, "_EJ3", /* 600e/x, A2xm/p, A3x */
3116 "_EJ0", /* all others */
3117 ); /* 570,A21e,G4x,R30,R31,R32,R40e,R50e */
3118IBM_HANDLE(bay2, root, "\\_SB.PCI0.IDE0.PRIM.SLAV", /* A3x, R32 */
3119 "\\_SB.PCI0.IDE0.IDEP.IDPS", /* 600e/x, 770e, 770x */
3120 ); /* all others */
3121IBM_HANDLE(bay2_ej, bay2, "_EJ3", /* 600e/x, 770e, A3x */
3122 "_EJ0", /* 770x */
3123 ); /* all others */
3124
a5763f22 3125static int __init bay_init(struct ibm_init_struct *iibm)
1da177e4 3126{
fe08bc4b
HMH		 3127 vdbg_printk(TPACPI_DBG_INIT, "initializing bay subdriver\n");
3128
8d376cd6 3129 IBM_ACPIHANDLE_INIT(bay);
5fba344c 3130 if (bay_handle)
8d376cd6
HMH		 3131 IBM_ACPIHANDLE_INIT(bay_ej);
3132 IBM_ACPIHANDLE_INIT(bay2);
5fba344c 3133 if (bay2_handle)
8d376cd6 3134 IBM_ACPIHANDLE_INIT(bay2_ej);
5fba344c 3135
d8fd94d9
HMH		 3136 tp_features.bay_status = bay_handle &&
3137 acpi_evalf(bay_handle, NULL, "_STA", "qv");
3138 tp_features.bay_status2 = bay2_handle &&
3139 acpi_evalf(bay2_handle, NULL, "_STA", "qv");
78f81cc4 3140
d8fd94d9
HMH		 3141 tp_features.bay_eject = bay_handle && bay_ej_handle &&
3142 (strlencmp(bay_ej_path, "_EJ0") == 0 || experimental);
3143 tp_features.bay_eject2 = bay2_handle && bay2_ej_handle &&
3144 (strlencmp(bay2_ej_path, "_EJ0") == 0 || experimental);
1da177e4 3145
fe08bc4b
HMH		 3146 vdbg_printk(TPACPI_DBG_INIT,
3147 "bay 1: status %s, eject %s; bay 2: status %s, eject %s\n",
d8fd94d9
HMH		 3148 str_supported(tp_features.bay_status),
3149 str_supported(tp_features.bay_eject),
3150 str_supported(tp_features.bay_status2),
3151 str_supported(tp_features.bay_eject2));
fe08bc4b 3152
d8fd94d9
HMH		 3153 return (tp_features.bay_status || tp_features.bay_eject ||
3154 tp_features.bay_status2 || tp_features.bay_eject2)? 0 : 1;
1da177e4
LT		 3155}
3156
56b6aeb0
HMH		 3157static void bay_notify(struct ibm_struct *ibm, u32 event)
3158{
14e04fb3 3159 acpi_bus_generate_proc_event(ibm->acpi->device, event, 0);
962ce8ca
ZR		 3160 acpi_bus_generate_netlink_event(ibm->acpi->device->pnp.device_class,
3161 ibm->acpi->device->dev.bus_id,
3162 event, 0);
56b6aeb0
HMH		 3163}
3164
78f81cc4
BD		 3165#define bay_occupied(b) (_sta(b##_handle) & 1)
3166
3167static int bay_read(char *p)
1da177e4
LT		 3168{
3169 int len = 0;
78f81cc4
BD		 3170 int occupied = bay_occupied(bay);
3171 int occupied2 = bay_occupied(bay2);
3172 int eject, eject2;
3173
d8fd94d9
HMH		 3174 len += sprintf(p + len, "status:\t\t%s\n",
3175 tp_features.bay_status ?
3176 (occupied ? "occupied" : "unoccupied") :
3177 "not supported");
3178 if (tp_features.bay_status2)
78f81cc4
BD		 3179 len += sprintf(p + len, "status2:\t%s\n", occupied2 ?
3180 "occupied" : "unoccupied");
3181
d8fd94d9
HMH		 3182 eject = tp_features.bay_eject && occupied;
3183 eject2 = tp_features.bay_eject2 && occupied2;
78f81cc4
BD		 3184
3185 if (eject && eject2)
3186 len += sprintf(p + len, "commands:\teject, eject2\n");
3187 else if (eject)
1da177e4 3188 len += sprintf(p + len, "commands:\teject\n");
78f81cc4
BD		 3189 else if (eject2)
3190 len += sprintf(p + len, "commands:\teject2\n");
1da177e4
LT		 3191
3192 return len;
3193}
3194
78f81cc4 3195static int bay_write(char *buf)
1da177e4
LT		 3196{
3197 char *cmd;
3198
d8fd94d9 3199 if (!tp_features.bay_eject && !tp_features.bay_eject2)
78f81cc4
BD		 3200 return -ENODEV;
3201
1da177e4 3202 while ((cmd = next_cmd(&buf))) {
d8fd94d9 3203 if (tp_features.bay_eject && strlencmp(cmd, "eject") == 0) {
78f81cc4
BD		 3204 if (!acpi_evalf(bay_ej_handle, NULL, NULL, "vd", 1))
3205 return -EIO;
d8fd94d9 3206 } else if (tp_features.bay_eject2 &&
78f81cc4
BD		 3207 strlencmp(cmd, "eject2") == 0) {
3208 if (!acpi_evalf(bay2_ej_handle, NULL, NULL, "vd", 1))
1da177e4
LT		 3209 return -EIO;
3210 } else
3211 return -EINVAL;
3212 }
3213
3214 return 0;
78f81cc4 3215}
a5763f22 3216
8d376cd6
HMH		 3217static struct tp_acpi_drv_struct ibm_bay_acpidriver = {
3218 .notify = bay_notify,
3219 .handle = &bay_handle,
3220 .type = ACPI_SYSTEM_NOTIFY,
3221};
3222
a5763f22
HMH		 3223static struct ibm_struct bay_driver_data = {
3224 .name = "bay",
3225 .read = bay_read,
3226 .write = bay_write,
8d376cd6 3227 .acpi = &ibm_bay_acpidriver,
a5763f22
HMH		 3228};
3229
85998248 3230#endif /* CONFIG_THINKPAD_ACPI_BAY */
1da177e4 3231
56b6aeb0
HMH		 3232/*************************************************************************
3233 * CMOS subdriver
3234 */
3235
b616004c
HMH		 3236/* sysfs cmos_command -------------------------------------------------- */
3237static ssize_t cmos_command_store(struct device *dev,
3238 struct device_attribute *attr,
3239 const char *buf, size_t count)
3240{
3241 unsigned long cmos_cmd;
3242 int res;
3243
3244 if (parse_strtoul(buf, 21, &cmos_cmd))
3245 return -EINVAL;
3246
3247 res = issue_thinkpad_cmos_command(cmos_cmd);
3248 return (res)? res : count;
3249}
3250
3251static struct device_attribute dev_attr_cmos_command =
3252 __ATTR(cmos_command, S_IWUSR, NULL, cmos_command_store);
3253
3254/* --------------------------------------------------------------------- */
3255
a5763f22 3256static int __init cmos_init(struct ibm_init_struct *iibm)
5fba344c 3257{
b616004c
HMH		 3258 int res;
3259
fe08bc4b
HMH		 3260 vdbg_printk(TPACPI_DBG_INIT,
3261 "initializing cmos commands subdriver\n");
3262
8d376cd6 3263 IBM_ACPIHANDLE_INIT(cmos);
5fba344c 3264
fe08bc4b
HMH		 3265 vdbg_printk(TPACPI_DBG_INIT, "cmos commands are %s\n",
3266 str_supported(cmos_handle != NULL));
b616004c
HMH		 3267
3268 res = device_create_file(&tpacpi_pdev->dev, &dev_attr_cmos_command);
3269 if (res)
3270 return res;
3271
5fba344c
HMH		 3272 return (cmos_handle)? 0 : 1;
3273}
3274
b616004c
HMH		 3275static void cmos_exit(void)
3276{
3277 device_remove_file(&tpacpi_pdev->dev, &dev_attr_cmos_command);
3278}
3279
78f81cc4 3280static int cmos_read(char *p)
1da177e4
LT		 3281{
3282 int len = 0;
3283
78f81cc4
BD		 3284 /* cmos not supported on 570, 600e/x, 770e, 770x, A21e, A2xm/p,
3285 R30, R31, T20-22, X20-21 */
1da177e4
LT		 3286 if (!cmos_handle)
3287 len += sprintf(p + len, "status:\t\tnot supported\n");
3288 else {
3289 len += sprintf(p + len, "status:\t\tsupported\n");
78f81cc4 3290 len += sprintf(p + len, "commands:\t<cmd> (<cmd> is 0-21)\n");
1da177e4
LT		 3291 }
3292
3293 return len;
3294}
3295
78f81cc4 3296static int cmos_write(char *buf)
1da177e4
LT		 3297{
3298 char *cmd;
c9bea99c 3299 int cmos_cmd, res;
1da177e4
LT		 3300
3301 while ((cmd = next_cmd(&buf))) {
78f81cc4
BD		 3302 if (sscanf(cmd, "%u", &cmos_cmd) == 1 &&
3303 cmos_cmd >= 0 && cmos_cmd <= 21) {
1da177e4
LT		 3304 /* cmos_cmd set */
3305 } else
3306 return -EINVAL;
3307
c9bea99c
HMH		 3308 res = issue_thinkpad_cmos_command(cmos_cmd);
3309 if (res)
3310 return res;
1da177e4
LT		 3311 }
3312
3313 return 0;
78f81cc4
BD		 3314}
3315
a5763f22
HMH		 3316static struct ibm_struct cmos_driver_data = {
3317 .name = "cmos",
3318 .read = cmos_read,
3319 .write = cmos_write,
b616004c 3320 .exit = cmos_exit,
a5763f22 3321};
56b6aeb0
HMH		 3322
3323/*************************************************************************
3324 * LED subdriver
3325 */
3326
f74a27d4
HMH		 3327enum led_access_mode {
3328 TPACPI_LED_NONE = 0,
3329 TPACPI_LED_570, /* 570 */
3330 TPACPI_LED_OLD, /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20-21 */
3331 TPACPI_LED_NEW, /* all others */
3332};
3333
3334enum { /* For TPACPI_LED_OLD */
3335 TPACPI_LED_EC_HLCL = 0x0c, /* EC reg to get led to power on */
3336 TPACPI_LED_EC_HLBL = 0x0d, /* EC reg to blink a lit led */
3337 TPACPI_LED_EC_HLMS = 0x0e, /* EC reg to select led to command */
3338};
3339
9a8e1738 3340static enum led_access_mode led_supported;
78f81cc4 3341
56b6aeb0
HMH		 3342IBM_HANDLE(led, ec, "SLED", /* 570 */
3343 "SYSL", /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20-21 */
3344 "LED", /* all others */
3345 ); /* R30, R31 */
3346
a5763f22 3347static int __init led_init(struct ibm_init_struct *iibm)
78f81cc4 3348{
fe08bc4b
HMH		 3349 vdbg_printk(TPACPI_DBG_INIT, "initializing LED subdriver\n");
3350
8d376cd6 3351 IBM_ACPIHANDLE_INIT(led);
5fba344c 3352
78f81cc4
BD		 3353 if (!led_handle)
3354 /* led not supported on R30, R31 */
efa27145 3355 led_supported = TPACPI_LED_NONE;
78f81cc4
BD		 3356 else if (strlencmp(led_path, "SLED") == 0)
3357 /* 570 */
efa27145 3358 led_supported = TPACPI_LED_570;
78f81cc4
BD		 3359 else if (strlencmp(led_path, "SYSL") == 0)
3360 /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20-21 */
efa27145 3361 led_supported = TPACPI_LED_OLD;
78f81cc4
BD		 3362 else
3363 /* all others */
efa27145 3364 led_supported = TPACPI_LED_NEW;
78f81cc4 3365
fe08bc4b
HMH		 3366 vdbg_printk(TPACPI_DBG_INIT, "LED commands are %s, mode %d\n",
3367 str_supported(led_supported), led_supported);
3368
5fba344c 3369 return (led_supported != TPACPI_LED_NONE)? 0 : 1;
78f81cc4
BD		 3370}
3371
3372#define led_status(s) ((s) == 0 ? "off" : ((s) == 1 ? "on" : "blinking"))
3373
3374static int led_read(char *p)
1da177e4
LT		 3375{
3376 int len = 0;
3377
78f81cc4
BD		 3378 if (!led_supported) {
3379 len += sprintf(p + len, "status:\t\tnot supported\n");
3380 return len;
3381 }
3382 len += sprintf(p + len, "status:\t\tsupported\n");
3383
efa27145 3384 if (led_supported == TPACPI_LED_570) {
78f81cc4
BD		 3385 /* 570 */
3386 int i, status;
3387 for (i = 0; i < 8; i++) {
3388 if (!acpi_evalf(ec_handle,
3389 &status, "GLED", "dd", 1 << i))
3390 return -EIO;
3391 len += sprintf(p + len, "%d:\t\t%s\n",
3392 i, led_status(status));
3393 }
3394 }
3395
1da177e4 3396 len += sprintf(p + len, "commands:\t"
78f81cc4 3397 "<led> on, <led> off, <led> blink (<led> is 0-7)\n");
1da177e4
LT		 3398
3399 return len;
3400}
3401
78f81cc4
BD		 3402/* off, on, blink */
3403static const int led_sled_arg1[] = { 0, 1, 3 };
3404static const int led_exp_hlbl[] = { 0, 0, 1 }; /* led# * */
3405static const int led_exp_hlcl[] = { 0, 1, 1 }; /* led# * */
3406static const int led_led_arg1[] = { 0, 0x80, 0xc0 };
3407
78f81cc4 3408static int led_write(char *buf)
1da177e4
LT		 3409{
3410 char *cmd;
78f81cc4
BD		 3411 int led, ind, ret;
3412
3413 if (!led_supported)
3414 return -ENODEV;
1da177e4
LT		 3415
3416 while ((cmd = next_cmd(&buf))) {
78f81cc4 3417 if (sscanf(cmd, "%d", &led) != 1 || led < 0 || led > 7)
1da177e4
LT		 3418 return -EINVAL;
3419
78f81cc4
BD		 3420 if (strstr(cmd, "off")) {
3421 ind = 0;
1da177e4 3422 } else if (strstr(cmd, "on")) {
78f81cc4
BD		 3423 ind = 1;
3424 } else if (strstr(cmd, "blink")) {
3425 ind = 2;
1da177e4
LT		 3426 } else
3427 return -EINVAL;
78f81cc4 3428
efa27145 3429 if (led_supported == TPACPI_LED_570) {
78f81cc4
BD		 3430 /* 570 */
3431 led = 1 << led;
1da177e4 3432 if (!acpi_evalf(led_handle, NULL, NULL, "vdd",
78f81cc4 3433 led, led_sled_arg1[ind]))
1da177e4 3434 return -EIO;
efa27145 3435 } else if (led_supported == TPACPI_LED_OLD) {
78f81cc4
BD		 3436 /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20 */
3437 led = 1 << led;
efa27145 3438 ret = ec_write(TPACPI_LED_EC_HLMS, led);
78f81cc4
BD		 3439 if (ret >= 0)
3440 ret =
efa27145 3441 ec_write(TPACPI_LED_EC_HLBL,
e062e034 3442 led * led_exp_hlbl[ind]);
78f81cc4
BD		 3443 if (ret >= 0)
3444 ret =
efa27145 3445 ec_write(TPACPI_LED_EC_HLCL,
e062e034 3446 led * led_exp_hlcl[ind]);
78f81cc4
BD		 3447 if (ret < 0)
3448 return ret;
3449 } else {
3450 /* all others */
3451 if (!acpi_evalf(led_handle, NULL, NULL, "vdd",
3452 led, led_led_arg1[ind]))
1da177e4 3453 return -EIO;
78f81cc4
BD		 3454 }
3455 }
3456
3457 return 0;
3458}
3459
a5763f22
HMH		 3460static struct ibm_struct led_driver_data = {
3461 .name = "led",
3462 .read = led_read,
3463 .write = led_write,
3464};
3465
56b6aeb0
HMH		 3466/*************************************************************************
3467 * Beep subdriver
3468 */
3469
3470IBM_HANDLE(beep, ec, "BEEP"); /* all except R30, R31 */
3471
a5763f22 3472static int __init beep_init(struct ibm_init_struct *iibm)
5fba344c 3473{
fe08bc4b
HMH		 3474 vdbg_printk(TPACPI_DBG_INIT, "initializing beep subdriver\n");
3475
8d376cd6 3476 IBM_ACPIHANDLE_INIT(beep);
5fba344c 3477
fe08bc4b
HMH		 3478 vdbg_printk(TPACPI_DBG_INIT, "beep is %s\n",
3479 str_supported(beep_handle != NULL));
3480
5fba344c
HMH		 3481 return (beep_handle)? 0 : 1;
3482}
3483
78f81cc4
BD		 3484static int beep_read(char *p)
3485{
3486 int len = 0;
3487
3488 if (!beep_handle)
3489 len += sprintf(p + len, "status:\t\tnot supported\n");
3490 else {
3491 len += sprintf(p + len, "status:\t\tsupported\n");
3492 len += sprintf(p + len, "commands:\t<cmd> (<cmd> is 0-17)\n");
3493 }
3494
3495 return len;
3496}
3497
3498static int beep_write(char *buf)
3499{
3500 char *cmd;
3501 int beep_cmd;
3502
3503 if (!beep_handle)
3504 return -ENODEV;
3505
3506 while ((cmd = next_cmd(&buf))) {
3507 if (sscanf(cmd, "%u", &beep_cmd) == 1 &&
3508 beep_cmd >= 0 && beep_cmd <= 17) {
3509 /* beep_cmd set */
3510 } else
3511 return -EINVAL;
3512 if (!acpi_evalf(beep_handle, NULL, NULL, "vdd", beep_cmd, 0))
3513 return -EIO;
3514 }
3515
3516 return 0;
3517}
3518
a5763f22
HMH		 3519static struct ibm_struct beep_driver_data = {
3520 .name = "beep",
3521 .read = beep_read,
3522 .write = beep_write,
3523};
3524
56b6aeb0
HMH		 3525/*************************************************************************
3526 * Thermal subdriver
3527 */
78f81cc4 3528
f74a27d4
HMH		 3529enum thermal_access_mode {
3530 TPACPI_THERMAL_NONE = 0, /* No thermal support */
3531 TPACPI_THERMAL_ACPI_TMP07, /* Use ACPI TMP0-7 */
3532 TPACPI_THERMAL_ACPI_UPDT, /* Use ACPI TMP0-7 with UPDT */
3533 TPACPI_THERMAL_TPEC_8, /* Use ACPI EC regs, 8 sensors */
3534 TPACPI_THERMAL_TPEC_16, /* Use ACPI EC regs, 16 sensors */
3535};
3536
3537enum { /* TPACPI_THERMAL_TPEC_* */
3538 TP_EC_THERMAL_TMP0 = 0x78, /* ACPI EC regs TMP 0..7 */
3539 TP_EC_THERMAL_TMP8 = 0xC0, /* ACPI EC regs TMP 8..15 */
3540 TP_EC_THERMAL_TMP_NA = -128, /* ACPI EC sensor not available */
3541};
3542
3543#define TPACPI_MAX_THERMAL_SENSORS 16 /* Max thermal sensors supported */
3544struct ibm_thermal_sensors_struct {
3545 s32 temp[TPACPI_MAX_THERMAL_SENSORS];
3546};
3547
a26f878a 3548static enum thermal_access_mode thermal_read_mode;
78f81cc4 3549
b21a15f6
HMH		 3550/* idx is zero-based */
3551static int thermal_get_sensor(int idx, s32 *value)
3552{
3553 int t;
3554 s8 tmp;
3555 char tmpi[5];
3556
3557 t = TP_EC_THERMAL_TMP0;
3558
3559 switch (thermal_read_mode) {
3560#if TPACPI_MAX_THERMAL_SENSORS >= 16
3561 case TPACPI_THERMAL_TPEC_16:
3562 if (idx >= 8 && idx <= 15) {
3563 t = TP_EC_THERMAL_TMP8;
3564 idx -= 8;
3565 }
3566 /* fallthrough */
3567#endif
3568 case TPACPI_THERMAL_TPEC_8:
3569 if (idx <= 7) {
3570 if (!acpi_ec_read(t + idx, &tmp))
3571 return -EIO;
3572 *value = tmp * 1000;
3573 return 0;
3574 }
3575 break;
3576
3577 case TPACPI_THERMAL_ACPI_UPDT:
3578 if (idx <= 7) {
3579 snprintf(tmpi, sizeof(tmpi), "TMP%c", '0' + idx);
3580 if (!acpi_evalf(ec_handle, NULL, "UPDT", "v"))
3581 return -EIO;
3582 if (!acpi_evalf(ec_handle, &t, tmpi, "d"))
3583 return -EIO;
3584 *value = (t - 2732) * 100;
3585 return 0;
3586 }
3587 break;
3588
3589 case TPACPI_THERMAL_ACPI_TMP07:
3590 if (idx <= 7) {
3591 snprintf(tmpi, sizeof(tmpi), "TMP%c", '0' + idx);
3592 if (!acpi_evalf(ec_handle, &t, tmpi, "d"))
3593 return -EIO;
3594 if (t > 127 || t < -127)
3595 t = TP_EC_THERMAL_TMP_NA;
3596 *value = t * 1000;
3597 return 0;
3598 }
3599 break;
3600
3601 case TPACPI_THERMAL_NONE:
3602 default:
3603 return -ENOSYS;
3604 }
3605
3606 return -EINVAL;
3607}
3608
3609static int thermal_get_sensors(struct ibm_thermal_sensors_struct *s)
3610{
3611 int res, i;
3612 int n;
3613
3614 n = 8;
3615 i = 0;
3616
3617 if (!s)
3618 return -EINVAL;
3619
3620 if (thermal_read_mode == TPACPI_THERMAL_TPEC_16)
3621 n = 16;
3622
3623 for(i = 0 ; i < n; i++) {
3624 res = thermal_get_sensor(i, &s->temp[i]);
3625 if (res)
3626 return res;
3627 }
3628
3629 return n;
3630}
f74a27d4 3631
2c37aa4e
HMH		 3632/* sysfs temp##_input -------------------------------------------------- */
3633
3634static ssize_t thermal_temp_input_show(struct device *dev,
3635 struct device_attribute *attr,
3636 char *buf)
3637{
3638 struct sensor_device_attribute *sensor_attr =
3639 to_sensor_dev_attr(attr);
3640 int idx = sensor_attr->index;
3641 s32 value;
3642 int res;
3643
3644 res = thermal_get_sensor(idx, &value);
3645 if (res)
3646 return res;
3647 if (value == TP_EC_THERMAL_TMP_NA * 1000)
3648 return -ENXIO;
3649
3650 return snprintf(buf, PAGE_SIZE, "%d\n", value);
3651}
3652
3653#define THERMAL_SENSOR_ATTR_TEMP(_idxA, _idxB) \
3654 SENSOR_ATTR(temp##_idxA##_input, S_IRUGO, thermal_temp_input_show, NULL, _idxB)
3655
3656static struct sensor_device_attribute sensor_dev_attr_thermal_temp_input[] = {
3657 THERMAL_SENSOR_ATTR_TEMP(1, 0),
3658 THERMAL_SENSOR_ATTR_TEMP(2, 1),
3659 THERMAL_SENSOR_ATTR_TEMP(3, 2),
3660 THERMAL_SENSOR_ATTR_TEMP(4, 3),
3661 THERMAL_SENSOR_ATTR_TEMP(5, 4),
3662 THERMAL_SENSOR_ATTR_TEMP(6, 5),
3663 THERMAL_SENSOR_ATTR_TEMP(7, 6),
3664 THERMAL_SENSOR_ATTR_TEMP(8, 7),
3665 THERMAL_SENSOR_ATTR_TEMP(9, 8),
3666 THERMAL_SENSOR_ATTR_TEMP(10, 9),
3667 THERMAL_SENSOR_ATTR_TEMP(11, 10),
3668 THERMAL_SENSOR_ATTR_TEMP(12, 11),
3669 THERMAL_SENSOR_ATTR_TEMP(13, 12),
3670 THERMAL_SENSOR_ATTR_TEMP(14, 13),
3671 THERMAL_SENSOR_ATTR_TEMP(15, 14),
3672 THERMAL_SENSOR_ATTR_TEMP(16, 15),
3673};
3674
3675#define THERMAL_ATTRS(X) \
3676 &sensor_dev_attr_thermal_temp_input[X].dev_attr.attr
3677
3678static struct attribute *thermal_temp_input_attr[] = {
3679 THERMAL_ATTRS(8),
3680 THERMAL_ATTRS(9),
3681 THERMAL_ATTRS(10),
3682 THERMAL_ATTRS(11),
3683 THERMAL_ATTRS(12),
3684 THERMAL_ATTRS(13),
3685 THERMAL_ATTRS(14),
3686 THERMAL_ATTRS(15),
3687 THERMAL_ATTRS(0),
3688 THERMAL_ATTRS(1),
3689 THERMAL_ATTRS(2),
3690 THERMAL_ATTRS(3),
3691 THERMAL_ATTRS(4),
3692 THERMAL_ATTRS(5),
3693 THERMAL_ATTRS(6),
3694 THERMAL_ATTRS(7),
3695 NULL
3696};
3697
3698static const struct attribute_group thermal_temp_input16_group = {
3699 .attrs = thermal_temp_input_attr
3700};
3701
3702static const struct attribute_group thermal_temp_input8_group = {
3703 .attrs = &thermal_temp_input_attr[8]
3704};
3705
3706#undef THERMAL_SENSOR_ATTR_TEMP
3707#undef THERMAL_ATTRS
3708
3709/* --------------------------------------------------------------------- */
3710
a5763f22 3711static int __init thermal_init(struct ibm_init_struct *iibm)
78f81cc4 3712{
60eb0b35
HMH		 3713 u8 t, ta1, ta2;
3714 int i;
5fba344c 3715 int acpi_tmp7;
2c37aa4e 3716 int res;
5fba344c 3717
fe08bc4b
HMH		 3718 vdbg_printk(TPACPI_DBG_INIT, "initializing thermal subdriver\n");
3719
5fba344c 3720 acpi_tmp7 = acpi_evalf(ec_handle, NULL, "TMP7", "qv");
60eb0b35 3721
3d6f99ca 3722 if (thinkpad_id.ec_model) {
60eb0b35
HMH		 3723 /*
3724 * Direct EC access mode: sensors at registers
3725 * 0x78-0x7F, 0xC0-0xC7. Registers return 0x00 for
3726 * non-implemented, thermal sensors return 0x80 when
3727 * not available
3728 */
78f81cc4 3729
60eb0b35
HMH		 3730 ta1 = ta2 = 0;
3731 for (i = 0; i < 8; i++) {
04cc862c 3732 if (acpi_ec_read(TP_EC_THERMAL_TMP0 + i, &t)) {
60eb0b35
HMH		 3733 ta1 |= t;
3734 } else {
3735 ta1 = 0;
3736 break;
3737 }
04cc862c 3738 if (acpi_ec_read(TP_EC_THERMAL_TMP8 + i, &t)) {
60eb0b35
HMH		 3739 ta2 |= t;
3740 } else {
3741 ta1 = 0;
3742 break;
3743 }
3744 }
3745 if (ta1 == 0) {
3746 /* This is sheer paranoia, but we handle it anyway */
3747 if (acpi_tmp7) {
3748 printk(IBM_ERR
3749 "ThinkPad ACPI EC access misbehaving, "
3750 "falling back to ACPI TMPx access mode\n");
efa27145 3751 thermal_read_mode = TPACPI_THERMAL_ACPI_TMP07;
60eb0b35
HMH		 3752 } else {
3753 printk(IBM_ERR
3754 "ThinkPad ACPI EC access misbehaving, "
3755 "disabling thermal sensors access\n");
efa27145 3756 thermal_read_mode = TPACPI_THERMAL_NONE;
60eb0b35
HMH		 3757 }
3758 } else {
3759 thermal_read_mode =
3760 (ta2 != 0) ?
efa27145 3761 TPACPI_THERMAL_TPEC_16 : TPACPI_THERMAL_TPEC_8;
60eb0b35
HMH		 3762 }
3763 } else if (acpi_tmp7) {
a26f878a
HMH		 3764 if (acpi_evalf(ec_handle, NULL, "UPDT", "qv")) {
3765 /* 600e/x, 770e, 770x */
efa27145 3766 thermal_read_mode = TPACPI_THERMAL_ACPI_UPDT;
a26f878a
HMH		 3767 } else {
3768 /* Standard ACPI TMPx access, max 8 sensors */
efa27145 3769 thermal_read_mode = TPACPI_THERMAL_ACPI_TMP07;
a26f878a
HMH		 3770 }
3771 } else {
3772 /* temperatures not supported on 570, G4x, R30, R31, R32 */
efa27145 3773 thermal_read_mode = TPACPI_THERMAL_NONE;
a26f878a 3774 }
78f81cc4 3775
fe08bc4b
HMH		 3776 vdbg_printk(TPACPI_DBG_INIT, "thermal is %s, mode %d\n",
3777 str_supported(thermal_read_mode != TPACPI_THERMAL_NONE),
3778 thermal_read_mode);
3779
2c37aa4e
HMH		 3780 switch(thermal_read_mode) {
3781 case TPACPI_THERMAL_TPEC_16:
7fd40029 3782 res = sysfs_create_group(&tpacpi_sensors_pdev->dev.kobj,
2c37aa4e
HMH		 3783 &thermal_temp_input16_group);
3784 if (res)
3785 return res;
3786 break;
3787 case TPACPI_THERMAL_TPEC_8:
3788 case TPACPI_THERMAL_ACPI_TMP07:
3789 case TPACPI_THERMAL_ACPI_UPDT:
7fd40029 3790 res = sysfs_create_group(&tpacpi_sensors_pdev->dev.kobj,
2c37aa4e
HMH		 3791 &thermal_temp_input8_group);
3792 if (res)
3793 return res;
3794 break;
3795 case TPACPI_THERMAL_NONE:
3796 default:
3797 return 1;
3798 }
3799
3800 return 0;
3801}
3802
3803static void thermal_exit(void)
3804{
3805 switch(thermal_read_mode) {
3806 case TPACPI_THERMAL_TPEC_16:
7fd40029 3807 sysfs_remove_group(&tpacpi_sensors_pdev->dev.kobj,
2c37aa4e
HMH		 3808 &thermal_temp_input16_group);
3809 break;
3810 case TPACPI_THERMAL_TPEC_8:
3811 case TPACPI_THERMAL_ACPI_TMP07:
3812 case TPACPI_THERMAL_ACPI_UPDT:
7fd40029 3813 sysfs_remove_group(&tpacpi_sensors_pdev->dev.kobj,
2c37aa4e
HMH		 3814 &thermal_temp_input16_group);
3815 break;
3816 case TPACPI_THERMAL_NONE:
3817 default:
3818 break;
3819 }
78f81cc4
BD		 3820}
3821
a26f878a
HMH		 3822static int thermal_read(char *p)
3823{
3824 int len = 0;
3825 int n, i;
3826 struct ibm_thermal_sensors_struct t;
3827
3828 n = thermal_get_sensors(&t);
3829 if (unlikely(n < 0))
3830 return n;
3831
3832 len += sprintf(p + len, "temperatures:\t");
3833
3834 if (n > 0) {
3835 for (i = 0; i < (n - 1); i++)
3836 len += sprintf(p + len, "%d ", t.temp[i] / 1000);
3837 len += sprintf(p + len, "%d\n", t.temp[i] / 1000);
3838 } else
3839 len += sprintf(p + len, "not supported\n");
78f81cc4
BD		 3840
3841 return len;
3842}
3843
a5763f22
HMH		 3844static struct ibm_struct thermal_driver_data = {
3845 .name = "thermal",
3846 .read = thermal_read,
2c37aa4e 3847 .exit = thermal_exit,
a5763f22
HMH		 3848};
3849
56b6aeb0
HMH		 3850/*************************************************************************
3851 * EC Dump subdriver
3852 */
3853
78f81cc4
BD		 3854static u8 ecdump_regs[256];
3855
3856static int ecdump_read(char *p)
3857{
3858 int len = 0;
3859 int i, j;
3860 u8 v;
3861
3862 len += sprintf(p + len, "EC "
3863 " +00 +01 +02 +03 +04 +05 +06 +07"
3864 " +08 +09 +0a +0b +0c +0d +0e +0f\n");
3865 for (i = 0; i < 256; i += 16) {
3866 len += sprintf(p + len, "EC 0x%02x:", i);
3867 for (j = 0; j < 16; j++) {
3868 if (!acpi_ec_read(i + j, &v))
3869 break;
3870 if (v != ecdump_regs[i + j])
3871 len += sprintf(p + len, " *%02x", v);
3872 else
3873 len += sprintf(p + len, " %02x", v);
3874 ecdump_regs[i + j] = v;
3875 }
3876 len += sprintf(p + len, "\n");
3877 if (j != 16)
3878 break;
3879 }
3880
3881 /* These are way too dangerous to advertise openly... */
3882#if 0
3883 len += sprintf(p + len, "commands:\t0x<offset> 0x<value>"
3884 " (<offset> is 00-ff, <value> is 00-ff)\n");
3885 len += sprintf(p + len, "commands:\t0x<offset> <value> "
3886 " (<offset> is 00-ff, <value> is 0-255)\n");
3887#endif
3888 return len;
3889}
3890
3891static int ecdump_write(char *buf)
3892{
3893 char *cmd;
3894 int i, v;
3895
3896 while ((cmd = next_cmd(&buf))) {
3897 if (sscanf(cmd, "0x%x 0x%x", &i, &v) == 2) {
3898 /* i and v set */
3899 } else if (sscanf(cmd, "0x%x %u", &i, &v) == 2) {
3900 /* i and v set */
3901 } else
3902 return -EINVAL;
3903 if (i >= 0 && i < 256 && v >= 0 && v < 256) {
3904 if (!acpi_ec_write(i, v))
1da177e4
LT		 3905 return -EIO;
3906 } else
3907 return -EINVAL;
3908 }
3909
3910 return 0;
78f81cc4
BD		 3911}
3912
a5763f22
HMH		 3913static struct ibm_struct ecdump_driver_data = {
3914 .name = "ecdump",
3915 .read = ecdump_read,
3916 .write = ecdump_write,
92641177 3917 .flags.experimental = 1,
a5763f22
HMH		 3918};
3919
56b6aeb0
HMH		 3920/*************************************************************************
3921 * Backlight/brightness subdriver
3922 */
3923
f74a27d4
HMH		 3924#define TPACPI_BACKLIGHT_DEV_NAME "thinkpad_screen"
3925
94954cc6 3926static struct backlight_device *ibm_backlight_device;
f74a27d4
HMH		 3927static int brightness_offset = 0x31;
3928static int brightness_mode;
3929static unsigned int brightness_enable = 2; /* 2 = auto, 0 = no, 1 = yes */
3930
b21a15f6 3931static struct mutex brightness_mutex;
56b6aeb0 3932
b21a15f6
HMH		 3933/*
3934 * ThinkPads can read brightness from two places: EC 0x31, or
3935 * CMOS NVRAM byte 0x5E, bits 0-3.
3936 */
3937static int brightness_get(struct backlight_device *bd)
3938{
3939 u8 lec = 0, lcmos = 0, level = 0;
3940
3941 if (brightness_mode & 1) {
3942 if (!acpi_ec_read(brightness_offset, &lec))
3943 return -EIO;
3944 lec &= (tp_features.bright_16levels)? 0x0f : 0x07;
3945 level = lec;
3946 };
3947 if (brightness_mode & 2) {
3948 lcmos = (nvram_read_byte(TP_NVRAM_ADDR_BRIGHTNESS)
3949 & TP_NVRAM_MASK_LEVEL_BRIGHTNESS)
3950 >> TP_NVRAM_POS_LEVEL_BRIGHTNESS;
3951 lcmos &= (tp_features.bright_16levels)? 0x0f : 0x07;
3952 level = lcmos;
3953 }
3954
3955 if (brightness_mode == 3 && lec != lcmos) {
3956 printk(IBM_ERR
3957 "CMOS NVRAM (%u) and EC (%u) do not agree "
3958 "on display brightness level\n",
3959 (unsigned int) lcmos,
3960 (unsigned int) lec);
3961 return -EIO;
3962 }
3963
3964 return level;
3965}
3966
3967/* May return EINTR which can always be mapped to ERESTARTSYS */
3968static int brightness_set(int value)
3969{
3970 int cmos_cmd, inc, i, res;
3971 int current_value;
3972
3973 if (value > ((tp_features.bright_16levels)? 15 : 7))
3974 return -EINVAL;
3975
3976 res = mutex_lock_interruptible(&brightness_mutex);
3977 if (res < 0)
3978 return res;
3979
3980 current_value = brightness_get(NULL);
3981 if (current_value < 0) {
3982 res = current_value;
3983 goto errout;
3984 }
3985
3986 cmos_cmd = value > current_value ?
3987 TP_CMOS_BRIGHTNESS_UP :
3988 TP_CMOS_BRIGHTNESS_DOWN;
3989 inc = (value > current_value)? 1 : -1;
3990
3991 res = 0;
3992 for (i = current_value; i != value; i += inc) {
3993 if ((brightness_mode & 2) &&
3994 issue_thinkpad_cmos_command(cmos_cmd)) {
3995 res = -EIO;
3996 goto errout;
3997 }
3998 if ((brightness_mode & 1) &&
3999 !acpi_ec_write(brightness_offset, i + inc)) {
4000 res = -EIO;
4001 goto errout;;
4002 }
4003 }
4004
4005errout:
4006 mutex_unlock(&brightness_mutex);
4007 return res;
4008}
4009
4010/* sysfs backlight class ----------------------------------------------- */
4011
4012static int brightness_update_status(struct backlight_device *bd)
4013{
4014 /* it is the backlight class's job (caller) to handle
4015 * EINTR and other errors properly */
4016 return brightness_set(
4017 (bd->props.fb_blank == FB_BLANK_UNBLANK &&
4018 bd->props.power == FB_BLANK_UNBLANK) ?
4019 bd->props.brightness : 0);
4020}
4021
4022static struct backlight_ops ibm_backlight_data = {
4023 .get_brightness = brightness_get,
56b6aeb0
HMH		 4024 .update_status = brightness_update_status,
4025};
4026
b21a15f6 4027/* --------------------------------------------------------------------- */
f432255e 4028
a3f104c0
HMH		 4029static int __init tpacpi_query_bcll_levels(acpi_handle handle)
4030{
4031 struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
4032 union acpi_object *obj;
4033 int rc;
4034
4035 if (ACPI_SUCCESS(acpi_evaluate_object(handle, NULL, NULL, &buffer))) {
4036 obj = (union acpi_object *)buffer.pointer;
4037 if (!obj || (obj->type != ACPI_TYPE_PACKAGE)) {
4038 printk(IBM_ERR "Unknown BCLL data, "
4039 "please report this to %s\n", IBM_MAIL);
4040 rc = 0;
4041 } else {
4042 rc = obj->package.count;
4043 }
4044 } else {
4045 return 0;
4046 }
4047
4048 kfree(buffer.pointer);
4049 return rc;
4050}
4051
4052static acpi_status __init brightness_find_bcll(acpi_handle handle, u32 lvl,
4053 void *context, void **rv)
4054{
4055 char name[ACPI_PATH_SEGMENT_LENGTH];
4056 struct acpi_buffer buffer = { sizeof(name), &name };
4057
4058 if (ACPI_SUCCESS(acpi_get_name(handle, ACPI_SINGLE_NAME, &buffer)) &&
4059 !strncmp("BCLL", name, sizeof(name) - 1)) {
4060 if (tpacpi_query_bcll_levels(handle) == 16) {
4061 *rv = handle;
4062 return AE_CTRL_TERMINATE;
4063 } else {
4064 return AE_OK;
4065 }
4066 } else {
4067 return AE_OK;
4068 }
4069}
4070
4071static int __init brightness_check_levels(void)
4072{
4073 int status;
4074 void *found_node = NULL;
4075
4076 if (!vid_handle) {
4077 IBM_ACPIHANDLE_INIT(vid);
4078 }
4079 if (!vid_handle)
4080 return 0;
4081
4082 /* Search for a BCLL package with 16 levels */
4083 status = acpi_walk_namespace(ACPI_TYPE_PACKAGE, vid_handle, 3,
4084 brightness_find_bcll, NULL, &found_node);
4085
4086 return (ACPI_SUCCESS(status) && found_node != NULL);
4087}
4088
e11e211a
HMH		 4089static acpi_status __init brightness_find_bcl(acpi_handle handle, u32 lvl,
4090 void *context, void **rv)
4091{
4092 char name[ACPI_PATH_SEGMENT_LENGTH];
4093 struct acpi_buffer buffer = { sizeof(name), &name };
4094
4095 if (ACPI_SUCCESS(acpi_get_name(handle, ACPI_SINGLE_NAME, &buffer)) &&
4096 !strncmp("_BCL", name, sizeof(name) - 1)) {
4097 *rv = handle;
4098 return AE_CTRL_TERMINATE;
4099 } else {
4100 return AE_OK;
4101 }
4102}
4103
4104static int __init brightness_check_std_acpi_support(void)
4105{
4106 int status;
4107 void *found_node = NULL;
4108
4109 if (!vid_handle) {
4110 IBM_ACPIHANDLE_INIT(vid);
4111 }
4112 if (!vid_handle)
4113 return 0;
4114
4115 /* Search for a _BCL method, but don't execute it */
4116 status = acpi_walk_namespace(ACPI_TYPE_METHOD, vid_handle, 3,
4117 brightness_find_bcl, NULL, &found_node);
4118
4119 return (ACPI_SUCCESS(status) && found_node != NULL);
4120}
4121
a5763f22 4122static int __init brightness_init(struct ibm_init_struct *iibm)
56b6aeb0
HMH		 4123{
4124 int b;
4125
fe08bc4b
HMH		 4126 vdbg_printk(TPACPI_DBG_INIT, "initializing brightness subdriver\n");
4127
f432255e
HMH		 4128 mutex_init(&brightness_mutex);
4129
87cc537a
HMH		 4130 if (!brightness_enable) {
4131 dbg_printk(TPACPI_DBG_INIT,
4132 "brightness support disabled by module parameter\n");
4133 return 1;
e11e211a
HMH		 4134 } else if (brightness_enable > 1) {
4135 if (brightness_check_std_acpi_support()) {
4136 printk(IBM_NOTICE
4137 "standard ACPI backlight interface available, not loading native one...\n");
4138 return 1;
4139 }
87cc537a
HMH		 4140 }
4141
24d3b774
HMH		 4142 if (!brightness_mode) {
4143 if (thinkpad_id.vendor == PCI_VENDOR_ID_LENOVO)
4144 brightness_mode = 2;
4145 else
4146 brightness_mode = 3;
4147
4148 dbg_printk(TPACPI_DBG_INIT, "selected brightness_mode=%d\n",
4149 brightness_mode);
4150 }
4151
4152 if (brightness_mode > 3)
4153 return -EINVAL;
4154
a3f104c0
HMH		 4155 tp_features.bright_16levels =
4156 thinkpad_id.vendor == PCI_VENDOR_ID_LENOVO &&
4157 brightness_check_levels();
4158
56b6aeb0
HMH		 4159 b = brightness_get(NULL);
4160 if (b < 0)
24d3b774 4161 return 1;
56b6aeb0 4162
a3f104c0
HMH		 4163 if (tp_features.bright_16levels)
4164 printk(IBM_INFO "detected a 16-level brightness capable ThinkPad\n");
4165
7d5a015e
HMH		 4166 ibm_backlight_device = backlight_device_register(
4167 TPACPI_BACKLIGHT_DEV_NAME, NULL, NULL,
4168 &ibm_backlight_data);
56b6aeb0
HMH		 4169 if (IS_ERR(ibm_backlight_device)) {
4170 printk(IBM_ERR "Could not register backlight device\n");
4171 return PTR_ERR(ibm_backlight_device);
4172 }
fe08bc4b 4173 vdbg_printk(TPACPI_DBG_INIT, "brightness is supported\n");
56b6aeb0 4174
a3f104c0
HMH		 4175 ibm_backlight_device->props.max_brightness =
4176 (tp_features.bright_16levels)? 15 : 7;
56b6aeb0
HMH		 4177 ibm_backlight_device->props.brightness = b;
4178 backlight_update_status(ibm_backlight_device);
4179
4180 return 0;
4181}
4182
4183static void brightness_exit(void)
4184{
4185 if (ibm_backlight_device) {
fe08bc4b
HMH		 4186 vdbg_printk(TPACPI_DBG_EXIT,
4187 "calling backlight_device_unregister()\n");
56b6aeb0
HMH		 4188 backlight_device_unregister(ibm_backlight_device);
4189 ibm_backlight_device = NULL;
4190 }
4191}
4192
56b6aeb0
HMH		 4193static int brightness_read(char *p)
4194{
4195 int len = 0;
4196 int level;
4197
4198 if ((level = brightness_get(NULL)) < 0) {
4199 len += sprintf(p + len, "level:\t\tunreadable\n");
4200 } else {
a3f104c0 4201 len += sprintf(p + len, "level:\t\t%d\n", level);
56b6aeb0
HMH		 4202 len += sprintf(p + len, "commands:\tup, down\n");
4203 len += sprintf(p + len, "commands:\tlevel <level>"
a3f104c0
HMH		 4204 " (<level> is 0-%d)\n",
4205 (tp_features.bright_16levels) ? 15 : 7);
56b6aeb0
HMH		 4206 }
4207
4208 return len;
4209}
4210
8acb0250
HM		 4211static int brightness_write(char *buf)
4212{
4213 int level;
4273af8d 4214 int rc;
1da177e4 4215 char *cmd;
a3f104c0 4216 int max_level = (tp_features.bright_16levels) ? 15 : 7;
1da177e4 4217
4273af8d
HMH		 4218 level = brightness_get(NULL);
4219 if (level < 0)
4220 return level;
78f81cc4 4221
4273af8d 4222 while ((cmd = next_cmd(&buf))) {
78f81cc4 4223 if (strlencmp(cmd, "up") == 0) {
4273af8d
HMH		 4224 if (level < max_level)
4225 level++;
78f81cc4 4226 } else if (strlencmp(cmd, "down") == 0) {
4273af8d
HMH		 4227 if (level > 0)
4228 level--;
4229 } else if (sscanf(cmd, "level %d", &level) == 1 &&
4230 level >= 0 && level <= max_level) {
4231 /* new level set */
78f81cc4
BD		 4232 } else
4233 return -EINVAL;
78f81cc4
BD		 4234 }
4235
4273af8d
HMH		 4236 /*
4237 * Now we know what the final level should be, so we try to set it.
4238 * Doing it this way makes the syscall restartable in case of EINTR
4239 */
4240 rc = brightness_set(level);
4241 return (rc == -EINTR)? ERESTARTSYS : rc;
78f81cc4
BD		 4242}
4243
a5763f22
HMH		 4244static struct ibm_struct brightness_driver_data = {
4245 .name = "brightness",
4246 .read = brightness_read,
4247 .write = brightness_write,
4248 .exit = brightness_exit,
4249};
4250
56b6aeb0
HMH		 4251/*************************************************************************
4252 * Volume subdriver
4253 */
fb87a811 4254
f74a27d4
HMH		 4255static int volume_offset = 0x30;
4256
78f81cc4
BD		 4257static int volume_read(char *p)
4258{
4259 int len = 0;
4260 u8 level;
4261
4262 if (!acpi_ec_read(volume_offset, &level)) {
4263 len += sprintf(p + len, "level:\t\tunreadable\n");
4264 } else {
4265 len += sprintf(p + len, "level:\t\t%d\n", level & 0xf);
4266 len += sprintf(p + len, "mute:\t\t%s\n", onoff(level, 6));
4267 len += sprintf(p + len, "commands:\tup, down, mute\n");
4268 len += sprintf(p + len, "commands:\tlevel <level>"
4269 " (<level> is 0-15)\n");
4270 }
4271
4272 return len;
4273}
4274
78f81cc4
BD		 4275static int volume_write(char *buf)
4276{
4277 int cmos_cmd, inc, i;
4278 u8 level, mute;
4279 int new_level, new_mute;
4280 char *cmd;
4281
4282 while ((cmd = next_cmd(&buf))) {
4283 if (!acpi_ec_read(volume_offset, &level))
4284 return -EIO;
4285 new_mute = mute = level & 0x40;
4286 new_level = level = level & 0xf;
4287
4288 if (strlencmp(cmd, "up") == 0) {
4289 if (mute)
4290 new_mute = 0;
4291 else
4292 new_level = level == 15 ? 15 : level + 1;
4293 } else if (strlencmp(cmd, "down") == 0) {
4294 if (mute)
4295 new_mute = 0;
4296 else
4297 new_level = level == 0 ? 0 : level - 1;
4298 } else if (sscanf(cmd, "level %d", &new_level) == 1 &&
4299 new_level >= 0 && new_level <= 15) {
4300 /* new_level set */
4301 } else if (strlencmp(cmd, "mute") == 0) {
4302 new_mute = 0x40;
1da177e4
LT		 4303 } else
4304 return -EINVAL;
4305
78f81cc4 4306 if (new_level != level) { /* mute doesn't change */
56b6aeb0 4307 cmos_cmd = new_level > level ? TP_CMOS_VOLUME_UP : TP_CMOS_VOLUME_DOWN;
78f81cc4
BD		 4308 inc = new_level > level ? 1 : -1;
4309
c9bea99c 4310 if (mute && (issue_thinkpad_cmos_command(cmos_cmd) ||
78f81cc4
BD		 4311 !acpi_ec_write(volume_offset, level)))
4312 return -EIO;
4313
4314 for (i = level; i != new_level; i += inc)
c9bea99c 4315 if (issue_thinkpad_cmos_command(cmos_cmd) ||
78f81cc4
BD		 4316 !acpi_ec_write(volume_offset, i + inc))
4317 return -EIO;
4318
c9bea99c 4319 if (mute && (issue_thinkpad_cmos_command(TP_CMOS_VOLUME_MUTE) ||
78f81cc4
BD		 4320 !acpi_ec_write(volume_offset,
4321 new_level + mute)))
4322 return -EIO;
4323 }
4324
4325 if (new_mute != mute) { /* level doesn't change */
56b6aeb0 4326 cmos_cmd = new_mute ? TP_CMOS_VOLUME_MUTE : TP_CMOS_VOLUME_UP;
78f81cc4 4327
c9bea99c 4328 if (issue_thinkpad_cmos_command(cmos_cmd) ||
78f81cc4
BD		 4329 !acpi_ec_write(volume_offset, level + new_mute))
4330 return -EIO;
4331 }
4332 }
4333
4334 return 0;
4335}
4336
a5763f22
HMH		 4337static struct ibm_struct volume_driver_data = {
4338 .name = "volume",
4339 .read = volume_read,
4340 .write = volume_write,
4341};
56b6aeb0
HMH		 4342
4343/*************************************************************************
4344 * Fan subdriver
4345 */
4346
4347/*
4348 * FAN ACCESS MODES
4349 *
efa27145 4350 * TPACPI_FAN_RD_ACPI_GFAN:
56b6aeb0
HMH		 4351 * ACPI GFAN method: returns fan level
4352 *
efa27145 4353 * see TPACPI_FAN_WR_ACPI_SFAN
f51d1a39 4354 * EC 0x2f (HFSP) not available if GFAN exists
56b6aeb0 4355 *
efa27145 4356 * TPACPI_FAN_WR_ACPI_SFAN:
56b6aeb0
HMH		 4357 * ACPI SFAN method: sets fan level, 0 (stop) to 7 (max)
4358 *
f51d1a39
HMH		 4359 * EC 0x2f (HFSP) might be available *for reading*, but do not use
4360 * it for writing.
56b6aeb0 4361 *
efa27145 4362 * TPACPI_FAN_WR_TPEC:
f51d1a39
HMH		 4363 * ThinkPad EC register 0x2f (HFSP): fan control loop mode
4364 * Supported on almost all ThinkPads
56b6aeb0
HMH		 4365 *
4366 * Fan speed changes of any sort (including those caused by the
4367 * disengaged mode) are usually done slowly by the firmware as the
4368 * maximum ammount of fan duty cycle change per second seems to be
4369 * limited.
4370 *
4371 * Reading is not available if GFAN exists.
4372 * Writing is not available if SFAN exists.
4373 *
4374 * Bits
4375 * 7 automatic mode engaged;
4376 * (default operation mode of the ThinkPad)
4377 * fan level is ignored in this mode.
f51d1a39 4378 * 6 full speed mode (takes precedence over bit 7);
56b6aeb0 4379 * not available on all thinkpads. May disable
f51d1a39
HMH		 4380 * the tachometer while the fan controller ramps up
4381 * the speed (which can take up to a few *minutes*).
4382 * Speeds up fan to 100% duty-cycle, which is far above
4383 * the standard RPM levels. It is not impossible that
4384 * it could cause hardware damage.
56b6aeb0
HMH		 4385 * 5-3 unused in some models. Extra bits for fan level
4386 * in others, but still useless as all values above
4387 * 7 map to the same speed as level 7 in these models.
4388 * 2-0 fan level (0..7 usually)
4389 * 0x00 = stop
4390 * 0x07 = max (set when temperatures critical)
4391 * Some ThinkPads may have other levels, see
efa27145 4392 * TPACPI_FAN_WR_ACPI_FANS (X31/X40/X41)
56b6aeb0
HMH		 4393 *
4394 * FIRMWARE BUG: on some models, EC 0x2f might not be initialized at
4395 * boot. Apparently the EC does not intialize it, so unless ACPI DSDT
4396 * does so, its initial value is meaningless (0x07).
4397 *
4398 * For firmware bugs, refer to:
4399 * http://thinkwiki.org/wiki/Embedded_Controller_Firmware#Firmware_Issues
4400 *
4401 * ----
4402 *
4403 * ThinkPad EC register 0x84 (LSB), 0x85 (MSB):
4404 * Main fan tachometer reading (in RPM)
4405 *
4406 * This register is present on all ThinkPads with a new-style EC, and
4407 * it is known not to be present on the A21m/e, and T22, as there is
4408 * something else in offset 0x84 according to the ACPI DSDT. Other
4409 * ThinkPads from this same time period (and earlier) probably lack the
4410 * tachometer as well.
4411 *
4412 * Unfortunately a lot of ThinkPads with new-style ECs but whose firwmare
4413 * was never fixed by IBM to report the EC firmware version string
4414 * probably support the tachometer (like the early X models), so
4415 * detecting it is quite hard. We need more data to know for sure.
4416 *
4417 * FIRMWARE BUG: always read 0x84 first, otherwise incorrect readings
4418 * might result.
4419 *
f51d1a39
HMH		 4420 * FIRMWARE BUG: may go stale while the EC is switching to full speed
4421 * mode.
56b6aeb0
HMH		 4422 *
4423 * For firmware bugs, refer to:
4424 * http://thinkwiki.org/wiki/Embedded_Controller_Firmware#Firmware_Issues
4425 *
efa27145 4426 * TPACPI_FAN_WR_ACPI_FANS:
56b6aeb0
HMH		 4427 * ThinkPad X31, X40, X41. Not available in the X60.
4428 *
4429 * FANS ACPI handle: takes three arguments: low speed, medium speed,
4430 * high speed. ACPI DSDT seems to map these three speeds to levels
4431 * as follows: STOP LOW LOW MED MED HIGH HIGH HIGH HIGH
4432 * (this map is stored on FAN0..FAN8 as "0,1,1,2,2,3,3,3,3")
4433 *
4434 * The speeds are stored on handles
4435 * (FANA:FAN9), (FANC:FANB), (FANE:FAND).
4436 *
4437 * There are three default speed sets, acessible as handles:
4438 * FS1L,FS1M,FS1H; FS2L,FS2M,FS2H; FS3L,FS3M,FS3H
4439 *
4440 * ACPI DSDT switches which set is in use depending on various
4441 * factors.
4442 *
efa27145 4443 * TPACPI_FAN_WR_TPEC is also available and should be used to
56b6aeb0
HMH		 4444 * command the fan. The X31/X40/X41 seems to have 8 fan levels,
4445 * but the ACPI tables just mention level 7.
4446 */
4447
f74a27d4
HMH		 4448enum { /* Fan control constants */
4449 fan_status_offset = 0x2f, /* EC register 0x2f */
4450 fan_rpm_offset = 0x84, /* EC register 0x84: LSB, 0x85 MSB (RPM)
4451 * 0x84 must be read before 0x85 */
4452
4453 TP_EC_FAN_FULLSPEED = 0x40, /* EC fan mode: full speed */
4454 TP_EC_FAN_AUTO = 0x80, /* EC fan mode: auto fan control */
4455
4456 TPACPI_FAN_LAST_LEVEL = 0x100, /* Use cached last-seen fan level */
4457};
4458
4459enum fan_status_access_mode {
4460 TPACPI_FAN_NONE = 0, /* No fan status or control */
4461 TPACPI_FAN_RD_ACPI_GFAN, /* Use ACPI GFAN */
4462 TPACPI_FAN_RD_TPEC, /* Use ACPI EC regs 0x2f, 0x84-0x85 */
4463};
4464
4465enum fan_control_access_mode {
4466 TPACPI_FAN_WR_NONE = 0, /* No fan control */
4467 TPACPI_FAN_WR_ACPI_SFAN, /* Use ACPI SFAN */
4468 TPACPI_FAN_WR_TPEC, /* Use ACPI EC reg 0x2f */
4469 TPACPI_FAN_WR_ACPI_FANS, /* Use ACPI FANS and EC reg 0x2f */
4470};
4471
4472enum fan_control_commands {
4473 TPACPI_FAN_CMD_SPEED = 0x0001, /* speed command */
4474 TPACPI_FAN_CMD_LEVEL = 0x0002, /* level command */
4475 TPACPI_FAN_CMD_ENABLE = 0x0004, /* enable/disable cmd,
4476 * and also watchdog cmd */
4477};
4478
4479static int fan_control_allowed;
4480
69ba91cb
HMH		 4481static enum fan_status_access_mode fan_status_access_mode;
4482static enum fan_control_access_mode fan_control_access_mode;
4483static enum fan_control_commands fan_control_commands;
78f81cc4 4484
778b4d74 4485static u8 fan_control_initial_status;
fe98a52c 4486static u8 fan_control_desired_level;
f74a27d4
HMH		 4487static int fan_watchdog_maxinterval;
4488
4489static struct mutex fan_mutex;
778b4d74 4490
25c68a33 4491static void fan_watchdog_fire(struct work_struct *ignored);
25c68a33 4492static DECLARE_DELAYED_WORK(fan_watchdog_task, fan_watchdog_fire);
16663a87 4493
56b6aeb0
HMH		 4494IBM_HANDLE(fans, ec, "FANS"); /* X31, X40, X41 */
4495IBM_HANDLE(gfan, ec, "GFAN", /* 570 */
4496 "\\FSPD", /* 600e/x, 770e, 770x */
4497 ); /* all others */
4498IBM_HANDLE(sfan, ec, "SFAN", /* 570 */
4499 "JFNS", /* 770x-JL */
4500 ); /* all others */
4501
fe98a52c 4502/*
b21a15f6 4503 * Call with fan_mutex held
fe98a52c 4504 */
b21a15f6 4505static void fan_update_desired_level(u8 status)
fe98a52c 4506{
b21a15f6
HMH		 4507 if ((status &
4508 (TP_EC_FAN_AUTO | TP_EC_FAN_FULLSPEED)) == 0) {
4509 if (status > 7)
4510 fan_control_desired_level = 7;
4511 else
4512 fan_control_desired_level = status;
4513 }
4514}
fe98a52c 4515
b21a15f6
HMH		 4516static int fan_get_status(u8 *status)
4517{
4518 u8 s;
fe98a52c 4519
b21a15f6
HMH		 4520 /* TODO:
4521 * Add TPACPI_FAN_RD_ACPI_FANS ? */
fe98a52c 4522
b21a15f6
HMH		 4523 switch (fan_status_access_mode) {
4524 case TPACPI_FAN_RD_ACPI_GFAN:
4525 /* 570, 600e/x, 770e, 770x */
fe98a52c 4526
b21a15f6
HMH		 4527 if (unlikely(!acpi_evalf(gfan_handle, &s, NULL, "d")))
4528 return -EIO;
fe98a52c 4529
b21a15f6
HMH		 4530 if (likely(status))
4531 *status = s & 0x07;
fe98a52c 4532
b21a15f6
HMH		 4533 break;
4534
4535 case TPACPI_FAN_RD_TPEC:
4536 /* all except 570, 600e/x, 770e, 770x */
4537 if (unlikely(!acpi_ec_read(fan_status_offset, &s)))
4538 return -EIO;
4539
4540 if (likely(status))
4541 *status = s;
fe98a52c 4542
fe98a52c 4543 break;
b21a15f6 4544
fe98a52c 4545 default:
b21a15f6 4546 return -ENXIO;
fe98a52c
HMH		 4547 }
4548
b21a15f6
HMH		 4549 return 0;
4550}
fe98a52c 4551
b21a15f6
HMH		 4552static int fan_get_status_safe(u8 *status)
4553{
4554 int rc;
4555 u8 s;
fe98a52c 4556
b21a15f6
HMH		 4557 if (mutex_lock_interruptible(&fan_mutex))
4558 return -ERESTARTSYS;
4559 rc = fan_get_status(&s);
4560 if (!rc)
4561 fan_update_desired_level(s);
4562 mutex_unlock(&fan_mutex);
fe98a52c 4563
b21a15f6
HMH		 4564 if (status)
4565 *status = s;
fe98a52c 4566
b21a15f6
HMH		 4567 return rc;
4568}
4569
4570static int fan_get_speed(unsigned int *speed)
fe98a52c 4571{
b21a15f6 4572 u8 hi, lo;
fe98a52c 4573
b21a15f6
HMH		 4574 switch (fan_status_access_mode) {
4575 case TPACPI_FAN_RD_TPEC:
4576 /* all except 570, 600e/x, 770e, 770x */
4577 if (unlikely(!acpi_ec_read(fan_rpm_offset, &lo) ||
4578 !acpi_ec_read(fan_rpm_offset + 1, &hi)))
4579 return -EIO;
fe98a52c 4580
b21a15f6
HMH		 4581 if (likely(speed))
4582 *speed = (hi << 8) | lo;
fe98a52c 4583
b21a15f6 4584 break;
fe98a52c 4585
b21a15f6
HMH		 4586 default:
4587 return -ENXIO;
4588 }
fe98a52c 4589
b21a15f6 4590 return 0;
fe98a52c
HMH		 4591}
4592
b21a15f6 4593static int fan_set_level(int level)
fe98a52c 4594{
b21a15f6
HMH		 4595 if (!fan_control_allowed)
4596 return -EPERM;
fe98a52c 4597
b21a15f6
HMH		 4598 switch (fan_control_access_mode) {
4599 case TPACPI_FAN_WR_ACPI_SFAN:
4600 if (level >= 0 && level <= 7) {
4601 if (!acpi_evalf(sfan_handle, NULL, NULL, "vd", level))
4602 return -EIO;
4603 } else
4604 return -EINVAL;
4605 break;
fe98a52c 4606
b21a15f6
HMH		 4607 case TPACPI_FAN_WR_ACPI_FANS:
4608 case TPACPI_FAN_WR_TPEC:
4609 if ((level != TP_EC_FAN_AUTO) &&
4610 (level != TP_EC_FAN_FULLSPEED) &&
4611 ((level < 0) || (level > 7)))
4612 return -EINVAL;
fe98a52c 4613
b21a15f6
HMH		 4614 /* safety net should the EC not support AUTO
4615 * or FULLSPEED mode bits and just ignore them */
4616 if (level & TP_EC_FAN_FULLSPEED)
4617 level |= 7; /* safety min speed 7 */
4618 else if (level & TP_EC_FAN_FULLSPEED)
4619 level |= 4; /* safety min speed 4 */
fe98a52c 4620
b21a15f6
HMH		 4621 if (!acpi_ec_write(fan_status_offset, level))
4622 return -EIO;
4623 else
4624 tp_features.fan_ctrl_status_undef = 0;
4625 break;
fe98a52c 4626
b21a15f6
HMH		 4627 default:
4628 return -ENXIO;
4629 }
4630 return 0;
fe98a52c
HMH		 4631}
4632
b21a15f6 4633static int fan_set_level_safe(int level)
fe98a52c 4634{
b21a15f6 4635 int rc;
fe98a52c 4636
b21a15f6
HMH		 4637 if (!fan_control_allowed)
4638 return -EPERM;
fe98a52c 4639
b21a15f6
HMH		 4640 if (mutex_lock_interruptible(&fan_mutex))
4641 return -ERESTARTSYS;
fe98a52c 4642
b21a15f6
HMH		 4643 if (level == TPACPI_FAN_LAST_LEVEL)
4644 level = fan_control_desired_level;
fe98a52c 4645
b21a15f6
HMH		 4646 rc = fan_set_level(level);
4647 if (!rc)
4648 fan_update_desired_level(level);
4649
4650 mutex_unlock(&fan_mutex);
4651 return rc;
fe98a52c
HMH		 4652}
4653
b21a15f6 4654static int fan_set_enable(void)
fe98a52c 4655{
b21a15f6
HMH		 4656 u8 s;
4657 int rc;
fe98a52c 4658
ecf2a80a
HMH		 4659 if (!fan_control_allowed)
4660 return -EPERM;
4661
b21a15f6
HMH		 4662 if (mutex_lock_interruptible(&fan_mutex))
4663 return -ERESTARTSYS;
fe98a52c 4664
b21a15f6
HMH		 4665 switch (fan_control_access_mode) {
4666 case TPACPI_FAN_WR_ACPI_FANS:
4667 case TPACPI_FAN_WR_TPEC:
4668 rc = fan_get_status(&s);
4669 if (rc < 0)
4670 break;
fe98a52c 4671
b21a15f6
HMH		 4672 /* Don't go out of emergency fan mode */
4673 if (s != 7) {
4674 s &= 0x07;
4675 s |= TP_EC_FAN_AUTO | 4; /* min fan speed 4 */
4676 }
fe98a52c 4677
b21a15f6
HMH		 4678 if (!acpi_ec_write(fan_status_offset, s))
4679 rc = -EIO;
4680 else {
4681 tp_features.fan_ctrl_status_undef = 0;
4682 rc = 0;
4683 }
4684 break;
fe98a52c 4685
b21a15f6
HMH		 4686 case TPACPI_FAN_WR_ACPI_SFAN:
4687 rc = fan_get_status(&s);
4688 if (rc < 0)
4689 break;
fe98a52c 4690
b21a15f6 4691 s &= 0x07;
fe98a52c 4692
b21a15f6
HMH		 4693 /* Set fan to at least level 4 */
4694 s |= 4;
fe08bc4b 4695
b21a15f6
HMH		 4696 if (!acpi_evalf(sfan_handle, NULL, NULL, "vd", s))
4697 rc= -EIO;
4698 else
4699 rc = 0;
4700 break;
78f81cc4 4701
b21a15f6
HMH		 4702 default:
4703 rc = -ENXIO;
4704 }
5fba344c 4705
b21a15f6
HMH		 4706 mutex_unlock(&fan_mutex);
4707 return rc;
69ba91cb 4708}
78f81cc4 4709
b21a15f6 4710static int fan_set_disable(void)
78f81cc4 4711{
b21a15f6 4712 int rc;
c52f0aa5 4713
b21a15f6
HMH		 4714 if (!fan_control_allowed)
4715 return -EPERM;
78f81cc4 4716
b21a15f6
HMH		 4717 if (mutex_lock_interruptible(&fan_mutex))
4718 return -ERESTARTSYS;
3ef8a609 4719
b21a15f6
HMH		 4720 rc = 0;
4721 switch (fan_control_access_mode) {
4722 case TPACPI_FAN_WR_ACPI_FANS:
4723 case TPACPI_FAN_WR_TPEC:
4724 if (!acpi_ec_write(fan_status_offset, 0x00))
4725 rc = -EIO;
4726 else {
4727 fan_control_desired_level = 0;
4728 tp_features.fan_ctrl_status_undef = 0;
4729 }
3ef8a609
HMH		 4730 break;
4731
b21a15f6
HMH		 4732 case TPACPI_FAN_WR_ACPI_SFAN:
4733 if (!acpi_evalf(sfan_handle, NULL, NULL, "vd", 0x00))
4734 rc = -EIO;
4735 else
4736 fan_control_desired_level = 0;
c52f0aa5
HMH		 4737 break;
4738
4739 default:
b21a15f6 4740 rc = -ENXIO;
78f81cc4
BD		 4741 }
4742
fe98a52c 4743
fe98a52c 4744 mutex_unlock(&fan_mutex);
fe98a52c
HMH		 4745 return rc;
4746}
4747
b21a15f6 4748static int fan_set_speed(int speed)
c52f0aa5 4749{
b21a15f6 4750 int rc;
c52f0aa5 4751
b21a15f6
HMH		 4752 if (!fan_control_allowed)
4753 return -EPERM;
3ef8a609 4754
b21a15f6
HMH		 4755 if (mutex_lock_interruptible(&fan_mutex))
4756 return -ERESTARTSYS;
c52f0aa5 4757
b21a15f6
HMH		 4758 rc = 0;
4759 switch (fan_control_access_mode) {
4760 case TPACPI_FAN_WR_ACPI_FANS:
4761 if (speed >= 0 && speed <= 65535) {
4762 if (!acpi_evalf(fans_handle, NULL, NULL, "vddd",
4763 speed, speed, speed))
4764 rc = -EIO;
4765 } else
4766 rc = -EINVAL;
c52f0aa5
HMH		 4767 break;
4768
4769 default:
b21a15f6 4770 rc = -ENXIO;
c52f0aa5
HMH		 4771 }
4772
b21a15f6
HMH		 4773 mutex_unlock(&fan_mutex);
4774 return rc;
16663a87
HMH		 4775}
4776
4777static void fan_watchdog_reset(void)
4778{
94954cc6 4779 static int fan_watchdog_active;
16663a87 4780
4985cd0a
HMH		 4781 if (fan_control_access_mode == TPACPI_FAN_WR_NONE)
4782 return;
4783
16663a87
HMH		 4784 if (fan_watchdog_active)
4785 cancel_delayed_work(&fan_watchdog_task);
4786
8fef502e
HMH		 4787 if (fan_watchdog_maxinterval > 0 &&
4788 tpacpi_lifecycle != TPACPI_LIFE_EXITING) {
16663a87
HMH		 4789 fan_watchdog_active = 1;
4790 if (!schedule_delayed_work(&fan_watchdog_task,
4791 msecs_to_jiffies(fan_watchdog_maxinterval
4792 * 1000))) {
4793 printk(IBM_ERR "failed to schedule the fan watchdog, "
4794 "watchdog will not trigger\n");
4795 }
4796 } else
4797 fan_watchdog_active = 0;
4798}
4799
b21a15f6 4800static void fan_watchdog_fire(struct work_struct *ignored)
78f81cc4 4801{
b21a15f6 4802 int rc;
18ad7996 4803
b21a15f6
HMH		 4804 if (tpacpi_lifecycle != TPACPI_LIFE_RUNNING)
4805 return;
a12095c2 4806
b21a15f6
HMH		 4807 printk(IBM_NOTICE "fan watchdog: enabling fan\n");
4808 rc = fan_set_enable();
4809 if (rc < 0) {
4810 printk(IBM_ERR "fan watchdog: error %d while enabling fan, "
4811 "will try again later...\n", -rc);
4812 /* reschedule for later */
4813 fan_watchdog_reset();
4814 }
4815}
eaa7571b 4816
b21a15f6
HMH		 4817/*
4818 * SYSFS fan layout: hwmon compatible (device)
4819 *
4820 * pwm*_enable:
4821 * 0: "disengaged" mode
4822 * 1: manual mode
4823 * 2: native EC "auto" mode (recommended, hardware default)
4824 *
4825 * pwm*: set speed in manual mode, ignored otherwise.
4826 * 0 is level 0; 255 is level 7. Intermediate points done with linear
4827 * interpolation.
4828 *
4829 * fan*_input: tachometer reading, RPM
4830 *
4831 *
4832 * SYSFS fan layout: extensions
4833 *
4834 * fan_watchdog (driver):
4835 * fan watchdog interval in seconds, 0 disables (default), max 120
4836 */
4837
4838/* sysfs fan pwm1_enable ----------------------------------------------- */
4839static ssize_t fan_pwm1_enable_show(struct device *dev,
4840 struct device_attribute *attr,
4841 char *buf)
4842{
4843 int res, mode;
4844 u8 status;
4845
4846 res = fan_get_status_safe(&status);
4847 if (res)
4848 return res;
4849
4850 if (unlikely(tp_features.fan_ctrl_status_undef)) {
4851 if (status != fan_control_initial_status) {
d8fd94d9 4852 tp_features.fan_ctrl_status_undef = 0;
b21a15f6
HMH		 4853 } else {
4854 /* Return most likely status. In fact, it
4855 * might be the only possible status */
4856 status = TP_EC_FAN_AUTO;
4857 }
4858 }
4859
4860 if (status & TP_EC_FAN_FULLSPEED) {
4861 mode = 0;
4862 } else if (status & TP_EC_FAN_AUTO) {
4863 mode = 2;
4864 } else
4865 mode = 1;
4866
4867 return snprintf(buf, PAGE_SIZE, "%d\n", mode);
4868}
a12095c2 4869
b21a15f6
HMH		 4870static ssize_t fan_pwm1_enable_store(struct device *dev,
4871 struct device_attribute *attr,
4872 const char *buf, size_t count)
4873{
4874 unsigned long t;
4875 int res, level;
4876
4877 if (parse_strtoul(buf, 2, &t))
4878 return -EINVAL;
4879
4880 switch (t) {
4881 case 0:
4882 level = TP_EC_FAN_FULLSPEED;
4883 break;
4884 case 1:
4885 level = TPACPI_FAN_LAST_LEVEL;
4886 break;
4887 case 2:
4888 level = TP_EC_FAN_AUTO;
4889 break;
4890 case 3:
4891 /* reserved for software-controlled auto mode */
4892 return -ENOSYS;
18ad7996 4893 default:
b21a15f6 4894 return -EINVAL;
18ad7996 4895 }
b21a15f6
HMH		 4896
4897 res = fan_set_level_safe(level);
4898 if (res == -ENXIO)
4899 return -EINVAL;
4900 else if (res < 0)
4901 return res;
4902
4903 fan_watchdog_reset();
4904
4905 return count;
18ad7996
HMH		 4906}
4907
b21a15f6
HMH		 4908static struct device_attribute dev_attr_fan_pwm1_enable =
4909 __ATTR(pwm1_enable, S_IWUSR | S_IRUGO,
4910 fan_pwm1_enable_show, fan_pwm1_enable_store);
4911
4912/* sysfs fan pwm1 ------------------------------------------------------ */
4913static ssize_t fan_pwm1_show(struct device *dev,
4914 struct device_attribute *attr,
4915 char *buf)
fe98a52c 4916{
b21a15f6
HMH		 4917 int res;
4918 u8 status;
fe98a52c 4919
b21a15f6
HMH		 4920 res = fan_get_status_safe(&status);
4921 if (res)
4922 return res;
ecf2a80a 4923
b21a15f6
HMH		 4924 if (unlikely(tp_features.fan_ctrl_status_undef)) {
4925 if (status != fan_control_initial_status) {
4926 tp_features.fan_ctrl_status_undef = 0;
4927 } else {
4928 status = TP_EC_FAN_AUTO;
4929 }
4930 }
fe98a52c 4931
b21a15f6
HMH		 4932 if ((status &
4933 (TP_EC_FAN_AUTO | TP_EC_FAN_FULLSPEED)) != 0)
4934 status = fan_control_desired_level;
fe98a52c 4935
b21a15f6
HMH		 4936 if (status > 7)
4937 status = 7;
fe98a52c 4938
b21a15f6 4939 return snprintf(buf, PAGE_SIZE, "%u\n", (status * 255) / 7);
fe98a52c
HMH		 4940}
4941
b21a15f6
HMH		 4942static ssize_t fan_pwm1_store(struct device *dev,
4943 struct device_attribute *attr,
4944 const char *buf, size_t count)
18ad7996 4945{
b21a15f6 4946 unsigned long s;
1c6a334e 4947 int rc;
b21a15f6 4948 u8 status, newlevel;
1c6a334e 4949
b21a15f6
HMH		 4950 if (parse_strtoul(buf, 255, &s))
4951 return -EINVAL;
4952
4953 /* scale down from 0-255 to 0-7 */
4954 newlevel = (s >> 5) & 0x07;
ecf2a80a 4955
fc589a3c
HMH		 4956 if (mutex_lock_interruptible(&fan_mutex))
4957 return -ERESTARTSYS;
40ca9fdf 4958
b21a15f6
HMH		 4959 rc = fan_get_status(&status);
4960 if (!rc && (status &
4961 (TP_EC_FAN_AUTO | TP_EC_FAN_FULLSPEED)) == 0) {
4962 rc = fan_set_level(newlevel);
4963 if (rc == -ENXIO)
4964 rc = -EINVAL;
4965 else if (!rc) {
4966 fan_update_desired_level(newlevel);
4967 fan_watchdog_reset();
eaa7571b 4968 }
b21a15f6 4969 }
1c6a334e 4970
b21a15f6
HMH		 4971 mutex_unlock(&fan_mutex);
4972 return (rc)? rc : count;
4973}
1c6a334e 4974
b21a15f6
HMH		 4975static struct device_attribute dev_attr_fan_pwm1 =
4976 __ATTR(pwm1, S_IWUSR | S_IRUGO,
4977 fan_pwm1_show, fan_pwm1_store);
1c6a334e 4978
b21a15f6
HMH		 4979/* sysfs fan fan1_input ------------------------------------------------ */
4980static ssize_t fan_fan1_input_show(struct device *dev,
4981 struct device_attribute *attr,
4982 char *buf)
4983{
4984 int res;
4985 unsigned int speed;
1c6a334e 4986
b21a15f6
HMH		 4987 res = fan_get_speed(&speed);
4988 if (res < 0)
4989 return res;
1c6a334e 4990
b21a15f6
HMH		 4991 return snprintf(buf, PAGE_SIZE, "%u\n", speed);
4992}
18ad7996 4993
b21a15f6
HMH		 4994static struct device_attribute dev_attr_fan_fan1_input =
4995 __ATTR(fan1_input, S_IRUGO,
4996 fan_fan1_input_show, NULL);
40ca9fdf 4997
b21a15f6
HMH		 4998/* sysfs fan fan_watchdog (hwmon driver) ------------------------------- */
4999static ssize_t fan_fan_watchdog_show(struct device_driver *drv,
5000 char *buf)
5001{
5002 return snprintf(buf, PAGE_SIZE, "%u\n", fan_watchdog_maxinterval);
18ad7996
HMH		 5003}
5004
b21a15f6
HMH		 5005static ssize_t fan_fan_watchdog_store(struct device_driver *drv,
5006 const char *buf, size_t count)
18ad7996 5007{
b21a15f6
HMH		 5008 unsigned long t;
5009
5010 if (parse_strtoul(buf, 120, &t))
5011 return -EINVAL;
40ca9fdf 5012
ecf2a80a
HMH		 5013 if (!fan_control_allowed)
5014 return -EPERM;
5015
b21a15f6
HMH		 5016 fan_watchdog_maxinterval = t;
5017 fan_watchdog_reset();
40ca9fdf 5018
b21a15f6
HMH		 5019 return count;
5020}
5021
5022static DRIVER_ATTR(fan_watchdog, S_IWUSR | S_IRUGO,
5023 fan_fan_watchdog_show, fan_fan_watchdog_store);
5024
5025/* --------------------------------------------------------------------- */
5026static struct attribute *fan_attributes[] = {
5027 &dev_attr_fan_pwm1_enable.attr, &dev_attr_fan_pwm1.attr,
5028 &dev_attr_fan_fan1_input.attr,
5029 NULL
5030};
5031
5032static const struct attribute_group fan_attr_group = {
5033 .attrs = fan_attributes,
5034};
5035
5036static int __init fan_init(struct ibm_init_struct *iibm)
5037{
5038 int rc;
5039
5040 vdbg_printk(TPACPI_DBG_INIT, "initializing fan subdriver\n");
5041
5042 mutex_init(&fan_mutex);
5043 fan_status_access_mode = TPACPI_FAN_NONE;
5044 fan_control_access_mode = TPACPI_FAN_WR_NONE;
5045 fan_control_commands = 0;
5046 fan_watchdog_maxinterval = 0;
5047 tp_features.fan_ctrl_status_undef = 0;
5048 fan_control_desired_level = 7;
5049
5050 IBM_ACPIHANDLE_INIT(fans);
5051 IBM_ACPIHANDLE_INIT(gfan);
5052 IBM_ACPIHANDLE_INIT(sfan);
5053
5054 if (gfan_handle) {
5055 /* 570, 600e/x, 770e, 770x */
5056 fan_status_access_mode = TPACPI_FAN_RD_ACPI_GFAN;
5057 } else {
5058 /* all other ThinkPads: note that even old-style
5059 * ThinkPad ECs supports the fan control register */
5060 if (likely(acpi_ec_read(fan_status_offset,
5061 &fan_control_initial_status))) {
5062 fan_status_access_mode = TPACPI_FAN_RD_TPEC;
5063
5064 /* In some ThinkPads, neither the EC nor the ACPI
5065 * DSDT initialize the fan status, and it ends up
5066 * being set to 0x07 when it *could* be either
5067 * 0x07 or 0x80.
5068 *
5069 * Enable for TP-1Y (T43), TP-78 (R51e),
5070 * TP-76 (R52), TP-70 (T43, R52), which are known
5071 * to be buggy. */
5072 if (fan_control_initial_status == 0x07) {
5073 switch (thinkpad_id.ec_model) {
5074 case 0x5931: /* TP-1Y */
5075 case 0x3837: /* TP-78 */
5076 case 0x3637: /* TP-76 */
5077 case 0x3037: /* TP-70 */
5078 printk(IBM_NOTICE
5079 "fan_init: initial fan status is "
5080 "unknown, assuming it is in auto "
5081 "mode\n");
5082 tp_features.fan_ctrl_status_undef = 1;
5083 ;;
5084 }
5085 }
5086 } else {
5087 printk(IBM_ERR
5088 "ThinkPad ACPI EC access misbehaving, "
5089 "fan status and control unavailable\n");
5090 return 1;
5091 }
5092 }
5093
5094 if (sfan_handle) {
5095 /* 570, 770x-JL */
5096 fan_control_access_mode = TPACPI_FAN_WR_ACPI_SFAN;
5097 fan_control_commands |=
5098 TPACPI_FAN_CMD_LEVEL | TPACPI_FAN_CMD_ENABLE;
5099 } else {
5100 if (!gfan_handle) {
5101 /* gfan without sfan means no fan control */
5102 /* all other models implement TP EC 0x2f control */
5103
5104 if (fans_handle) {
5105 /* X31, X40, X41 */
5106 fan_control_access_mode =
5107 TPACPI_FAN_WR_ACPI_FANS;
5108 fan_control_commands |=
5109 TPACPI_FAN_CMD_SPEED |
5110 TPACPI_FAN_CMD_LEVEL |
5111 TPACPI_FAN_CMD_ENABLE;
5112 } else {
5113 fan_control_access_mode = TPACPI_FAN_WR_TPEC;
5114 fan_control_commands |=
5115 TPACPI_FAN_CMD_LEVEL |
5116 TPACPI_FAN_CMD_ENABLE;
5117 }
fe98a52c 5118 }
b21a15f6 5119 }
18ad7996 5120
b21a15f6
HMH		 5121 vdbg_printk(TPACPI_DBG_INIT, "fan is %s, modes %d, %d\n",
5122 str_supported(fan_status_access_mode != TPACPI_FAN_NONE ||
5123 fan_control_access_mode != TPACPI_FAN_WR_NONE),
5124 fan_status_access_mode, fan_control_access_mode);
1c6a334e 5125
b21a15f6
HMH		 5126 /* fan control master switch */
5127 if (!fan_control_allowed) {
5128 fan_control_access_mode = TPACPI_FAN_WR_NONE;
5129 fan_control_commands = 0;
5130 dbg_printk(TPACPI_DBG_INIT,
5131 "fan control features disabled by parameter\n");
18ad7996 5132 }
40ca9fdf 5133
b21a15f6
HMH		 5134 /* update fan_control_desired_level */
5135 if (fan_status_access_mode != TPACPI_FAN_NONE)
5136 fan_get_status_safe(NULL);
fe98a52c 5137
b21a15f6
HMH		 5138 if (fan_status_access_mode != TPACPI_FAN_NONE ||
5139 fan_control_access_mode != TPACPI_FAN_WR_NONE) {
5140 rc = sysfs_create_group(&tpacpi_sensors_pdev->dev.kobj,
5141 &fan_attr_group);
5142 if (!(rc < 0))
5143 rc = driver_create_file(&tpacpi_hwmon_pdriver.driver,
5144 &driver_attr_fan_watchdog);
5145 if (rc < 0)
5146 return rc;
5147 return 0;
5148 } else
5149 return 1;
56b6aeb0
HMH		 5150}
5151
b21a15f6 5152static void fan_exit(void)
56b6aeb0 5153{
b21a15f6 5154 vdbg_printk(TPACPI_DBG_EXIT, "cancelling any pending fan watchdog tasks\n");
56b6aeb0 5155
b21a15f6
HMH		 5156 /* FIXME: can we really do this unconditionally? */
5157 sysfs_remove_group(&tpacpi_sensors_pdev->dev.kobj, &fan_attr_group);
5158 driver_remove_file(&tpacpi_hwmon_pdriver.driver, &driver_attr_fan_watchdog);
40ca9fdf 5159
b21a15f6
HMH		 5160 cancel_delayed_work(&fan_watchdog_task);
5161 flush_scheduled_work();
56b6aeb0
HMH		 5162}
5163
5164static int fan_read(char *p)
5165{
5166 int len = 0;
5167 int rc;
5168 u8 status;
5169 unsigned int speed = 0;
5170
5171 switch (fan_status_access_mode) {
efa27145 5172 case TPACPI_FAN_RD_ACPI_GFAN:
56b6aeb0 5173 /* 570, 600e/x, 770e, 770x */
fe98a52c 5174 if ((rc = fan_get_status_safe(&status)) < 0)
56b6aeb0
HMH		 5175 return rc;
5176
5177 len += sprintf(p + len, "status:\t\t%s\n"
5178 "level:\t\t%d\n",
5179 (status != 0) ? "enabled" : "disabled", status);
5180 break;
5181
efa27145 5182 case TPACPI_FAN_RD_TPEC:
56b6aeb0 5183 /* all except 570, 600e/x, 770e, 770x */
fe98a52c 5184 if ((rc = fan_get_status_safe(&status)) < 0)
56b6aeb0
HMH		 5185 return rc;
5186
d8fd94d9 5187 if (unlikely(tp_features.fan_ctrl_status_undef)) {
56b6aeb0 5188 if (status != fan_control_initial_status)
d8fd94d9 5189 tp_features.fan_ctrl_status_undef = 0;
56b6aeb0
HMH		 5190 else
5191 /* Return most likely status. In fact, it
5192 * might be the only possible status */
efa27145 5193 status = TP_EC_FAN_AUTO;
56b6aeb0
HMH		 5194 }
5195
5196 len += sprintf(p + len, "status:\t\t%s\n",
5197 (status != 0) ? "enabled" : "disabled");
5198
56b6aeb0
HMH		 5199 if ((rc = fan_get_speed(&speed)) < 0)
5200 return rc;
5201
5202 len += sprintf(p + len, "speed:\t\t%d\n", speed);
5203
efa27145 5204 if (status & TP_EC_FAN_FULLSPEED)
56b6aeb0
HMH		 5205 /* Disengaged mode takes precedence */
5206 len += sprintf(p + len, "level:\t\tdisengaged\n");
efa27145 5207 else if (status & TP_EC_FAN_AUTO)
56b6aeb0
HMH		 5208 len += sprintf(p + len, "level:\t\tauto\n");
5209 else
5210 len += sprintf(p + len, "level:\t\t%d\n", status);
5211 break;
5212
efa27145 5213 case TPACPI_FAN_NONE:
56b6aeb0
HMH		 5214 default:
5215 len += sprintf(p + len, "status:\t\tnot supported\n");
5216 }
5217
efa27145 5218 if (fan_control_commands & TPACPI_FAN_CMD_LEVEL) {
56b6aeb0
HMH		 5219 len += sprintf(p + len, "commands:\tlevel <level>");
5220
5221 switch (fan_control_access_mode) {
efa27145 5222 case TPACPI_FAN_WR_ACPI_SFAN:
56b6aeb0
HMH		 5223 len += sprintf(p + len, " (<level> is 0-7)\n");
5224 break;
5225
5226 default:
5227 len += sprintf(p + len, " (<level> is 0-7, "
fe98a52c 5228 "auto, disengaged, full-speed)\n");
56b6aeb0
HMH		 5229 break;
5230 }
5231 }
18ad7996 5232
efa27145 5233 if (fan_control_commands & TPACPI_FAN_CMD_ENABLE)
56b6aeb0
HMH		 5234 len += sprintf(p + len, "commands:\tenable, disable\n"
5235 "commands:\twatchdog <timeout> (<timeout> is 0 (off), "
5236 "1-120 (seconds))\n");
1da177e4 5237
efa27145 5238 if (fan_control_commands & TPACPI_FAN_CMD_SPEED)
56b6aeb0
HMH		 5239 len += sprintf(p + len, "commands:\tspeed <speed>"
5240 " (<speed> is 0-65535)\n");
5241
5242 return len;
78f81cc4
BD		 5243}
5244
18ad7996
HMH		 5245static int fan_write_cmd_level(const char *cmd, int *rc)
5246{
5247 int level;
5248
a12095c2 5249 if (strlencmp(cmd, "level auto") == 0)
efa27145 5250 level = TP_EC_FAN_AUTO;
fe98a52c
HMH		 5251 else if ((strlencmp(cmd, "level disengaged") == 0) |
5252 (strlencmp(cmd, "level full-speed") == 0))
efa27145 5253 level = TP_EC_FAN_FULLSPEED;
a12095c2 5254 else if (sscanf(cmd, "level %d", &level) != 1)
18ad7996
HMH		 5255 return 0;
5256
fe98a52c 5257 if ((*rc = fan_set_level_safe(level)) == -ENXIO)
18ad7996
HMH		 5258 printk(IBM_ERR "level command accepted for unsupported "
5259 "access mode %d", fan_control_access_mode);
5260
5261 return 1;
5262}
5263
5264static int fan_write_cmd_enable(const char *cmd, int *rc)
5265{
5266 if (strlencmp(cmd, "enable") != 0)
5267 return 0;
5268
5269 if ((*rc = fan_set_enable()) == -ENXIO)
5270 printk(IBM_ERR "enable command accepted for unsupported "
5271 "access mode %d", fan_control_access_mode);
5272
5273 return 1;
5274}
5275
5276static int fan_write_cmd_disable(const char *cmd, int *rc)
5277{
5278 if (strlencmp(cmd, "disable") != 0)
5279 return 0;
5280
5281 if ((*rc = fan_set_disable()) == -ENXIO)
5282 printk(IBM_ERR "disable command accepted for unsupported "
5283 "access mode %d", fan_control_access_mode);
5284
5285 return 1;
5286}
5287
5288static int fan_write_cmd_speed(const char *cmd, int *rc)
5289{
5290 int speed;
5291
a8b7a662
HMH		 5292 /* TODO:
5293 * Support speed <low> <medium> <high> ? */
5294
18ad7996
HMH		 5295 if (sscanf(cmd, "speed %d", &speed) != 1)
5296 return 0;
5297
5298 if ((*rc = fan_set_speed(speed)) == -ENXIO)
5299 printk(IBM_ERR "speed command accepted for unsupported "
5300 "access mode %d", fan_control_access_mode);
5301
5302 return 1;
5303}
5304
16663a87
HMH		 5305static int fan_write_cmd_watchdog(const char *cmd, int *rc)
5306{
5307 int interval;
5308
5309 if (sscanf(cmd, "watchdog %d", &interval) != 1)
5310 return 0;
5311
5312 if (interval < 0 || interval > 120)
5313 *rc = -EINVAL;
5314 else
5315 fan_watchdog_maxinterval = interval;
5316
5317 return 1;
5318}
5319
18ad7996
HMH		 5320static int fan_write(char *buf)
5321{
5322 char *cmd;
5323 int rc = 0;
5324
5325 while (!rc && (cmd = next_cmd(&buf))) {
efa27145 5326 if (!((fan_control_commands & TPACPI_FAN_CMD_LEVEL) &&
18ad7996 5327 fan_write_cmd_level(cmd, &rc)) &&
efa27145 5328 !((fan_control_commands & TPACPI_FAN_CMD_ENABLE) &&
18ad7996 5329 (fan_write_cmd_enable(cmd, &rc) ||
16663a87
HMH		 5330 fan_write_cmd_disable(cmd, &rc) ||
5331 fan_write_cmd_watchdog(cmd, &rc))) &&
efa27145 5332 !((fan_control_commands & TPACPI_FAN_CMD_SPEED) &&
18ad7996
HMH		 5333 fan_write_cmd_speed(cmd, &rc))
5334 )
5335 rc = -EINVAL;
16663a87
HMH		 5336 else if (!rc)
5337 fan_watchdog_reset();
18ad7996
HMH		 5338 }
5339
5340 return rc;
5341}
5342
a5763f22
HMH		 5343static struct ibm_struct fan_driver_data = {
5344 .name = "fan",
5345 .read = fan_read,
5346 .write = fan_write,
5347 .exit = fan_exit,
a5763f22
HMH		 5348};
5349
56b6aeb0
HMH		 5350/****************************************************************************
5351 ****************************************************************************
5352 *
5353 * Infrastructure
5354 *
5355 ****************************************************************************
5356 ****************************************************************************/
5357
7fd40029
HMH		 5358/* sysfs name ---------------------------------------------------------- */
5359static ssize_t thinkpad_acpi_pdev_name_show(struct device *dev,
5360 struct device_attribute *attr,
5361 char *buf)
5362{
5363 return snprintf(buf, PAGE_SIZE, "%s\n", IBM_NAME);
5364}
5365
5366static struct device_attribute dev_attr_thinkpad_acpi_pdev_name =
5367 __ATTR(name, S_IRUGO, thinkpad_acpi_pdev_name_show, NULL);
5368
5369/* --------------------------------------------------------------------- */
5370
56b6aeb0 5371/* /proc support */
94954cc6 5372static struct proc_dir_entry *proc_dir;
16663a87 5373
56b6aeb0
HMH		 5374/*
5375 * Module and infrastructure proble, init and exit handling
5376 */
1da177e4 5377
b21a15f6
HMH		 5378static int force_load;
5379
fe08bc4b 5380#ifdef CONFIG_THINKPAD_ACPI_DEBUG
a5763f22 5381static const char * __init str_supported(int is_supported)
fe08bc4b 5382{
a5763f22 5383 static char text_unsupported[] __initdata = "not supported";
fe08bc4b 5384
a5763f22 5385 return (is_supported)? &text_unsupported[4] : &text_unsupported[0];
fe08bc4b
HMH		 5386}
5387#endif /* CONFIG_THINKPAD_ACPI_DEBUG */
5388
b21a15f6
HMH		 5389static void ibm_exit(struct ibm_struct *ibm)
5390{
5391 dbg_printk(TPACPI_DBG_EXIT, "removing %s\n", ibm->name);
5392
5393 list_del_init(&ibm->all_drivers);
5394
5395 if (ibm->flags.acpi_notify_installed) {
5396 dbg_printk(TPACPI_DBG_EXIT,
5397 "%s: acpi_remove_notify_handler\n", ibm->name);
5398 BUG_ON(!ibm->acpi);
5399 acpi_remove_notify_handler(*ibm->acpi->handle,
5400 ibm->acpi->type,
5401 dispatch_acpi_notify);
5402 ibm->flags.acpi_notify_installed = 0;
5403 ibm->flags.acpi_notify_installed = 0;
5404 }
5405
5406 if (ibm->flags.proc_created) {
5407 dbg_printk(TPACPI_DBG_EXIT,
5408 "%s: remove_proc_entry\n", ibm->name);
5409 remove_proc_entry(ibm->name, proc_dir);
5410 ibm->flags.proc_created = 0;
5411 }
5412
5413 if (ibm->flags.acpi_driver_registered) {
5414 dbg_printk(TPACPI_DBG_EXIT,
5415 "%s: acpi_bus_unregister_driver\n", ibm->name);
5416 BUG_ON(!ibm->acpi);
5417 acpi_bus_unregister_driver(ibm->acpi->driver);
5418 kfree(ibm->acpi->driver);
5419 ibm->acpi->driver = NULL;
5420 ibm->flags.acpi_driver_registered = 0;
5421 }
5422
5423 if (ibm->flags.init_called && ibm->exit) {
5424 ibm->exit();
5425 ibm->flags.init_called = 0;
5426 }
5427
5428 dbg_printk(TPACPI_DBG_INIT, "finished removing %s\n", ibm->name);
5429}
f74a27d4 5430
a5763f22 5431static int __init ibm_init(struct ibm_init_struct *iibm)
1da177e4
LT		 5432{
5433 int ret;
a5763f22 5434 struct ibm_struct *ibm = iibm->data;
1da177e4
LT		 5435 struct proc_dir_entry *entry;
5436
a5763f22
HMH		 5437 BUG_ON(ibm == NULL);
5438
5439 INIT_LIST_HEAD(&ibm->all_drivers);
5440
92641177 5441 if (ibm->flags.experimental && !experimental)
1da177e4
LT		 5442 return 0;
5443
fe08bc4b
HMH		 5444 dbg_printk(TPACPI_DBG_INIT,
5445 "probing for %s\n", ibm->name);
5446
a5763f22
HMH		 5447 if (iibm->init) {
5448 ret = iibm->init(iibm);
5fba344c
HMH		 5449 if (ret > 0)
5450 return 0; /* probe failed */
5451 if (ret)
1da177e4 5452 return ret;
a5763f22 5453
92641177 5454 ibm->flags.init_called = 1;
1da177e4
LT		 5455 }
5456
8d376cd6
HMH		 5457 if (ibm->acpi) {
5458 if (ibm->acpi->hid) {
5459 ret = register_tpacpi_subdriver(ibm);
5460 if (ret)
5461 goto err_out;
5462 }
5fba344c 5463
8d376cd6
HMH		 5464 if (ibm->acpi->notify) {
5465 ret = setup_acpi_notify(ibm);
5466 if (ret == -ENODEV) {
5467 printk(IBM_NOTICE "disabling subdriver %s\n",
5468 ibm->name);
5469 ret = 0;
5470 goto err_out;
5471 }
5472 if (ret < 0)
5473 goto err_out;
5fba344c 5474 }
5fba344c
HMH		 5475 }
5476
fe08bc4b
HMH		 5477 dbg_printk(TPACPI_DBG_INIT,
5478 "%s installed\n", ibm->name);
5479
78f81cc4
BD		 5480 if (ibm->read) {
5481 entry = create_proc_entry(ibm->name,
5482 S_IFREG | S_IRUGO | S_IWUSR,
5483 proc_dir);
5484 if (!entry) {
5485 printk(IBM_ERR "unable to create proc entry %s\n",
5486 ibm->name);
5fba344c
HMH		 5487 ret = -ENODEV;
5488 goto err_out;
78f81cc4
BD		 5489 }
5490 entry->owner = THIS_MODULE;
5491 entry->data = ibm;
8d376cd6 5492 entry->read_proc = &dispatch_procfs_read;
78f81cc4 5493 if (ibm->write)
8d376cd6 5494 entry->write_proc = &dispatch_procfs_write;
92641177 5495 ibm->flags.proc_created = 1;
78f81cc4 5496 }
1da177e4 5497
a5763f22
HMH		 5498 list_add_tail(&ibm->all_drivers, &tpacpi_all_drivers);
5499
1da177e4 5500 return 0;
5fba344c
HMH		 5501
5502err_out:
fe08bc4b
HMH		 5503 dbg_printk(TPACPI_DBG_INIT,
5504 "%s: at error exit path with result %d\n",
5505 ibm->name, ret);
5506
5fba344c
HMH		 5507 ibm_exit(ibm);
5508 return (ret < 0)? ret : 0;
1da177e4
LT		 5509}
5510
56b6aeb0
HMH		 5511/* Probing */
5512
d5a2f2f1 5513static void __init get_thinkpad_model_data(struct thinkpad_id_data *tp)
1da177e4 5514{
1855256c 5515 const struct dmi_device *dev = NULL;
56b6aeb0 5516 char ec_fw_string[18];
1da177e4 5517
d5a2f2f1
HMH		 5518 if (!tp)
5519 return;
5520
5521 memset(tp, 0, sizeof(*tp));
5522
5523 if (dmi_name_in_vendors("IBM"))
5524 tp->vendor = PCI_VENDOR_ID_IBM;
5525 else if (dmi_name_in_vendors("LENOVO"))
5526 tp->vendor = PCI_VENDOR_ID_LENOVO;
5527 else
5528 return;
5529
5530 tp->bios_version_str = kstrdup(dmi_get_system_info(DMI_BIOS_VERSION),
5531 GFP_KERNEL);
5532 if (!tp->bios_version_str)
5533 return;
5534 tp->bios_model = tp->bios_version_str[0]
5535 | (tp->bios_version_str[1] << 8);
5536
56b6aeb0
HMH		 5537 /*
5538 * ThinkPad T23 or newer, A31 or newer, R50e or newer,
5539 * X32 or newer, all Z series; Some models must have an
5540 * up-to-date BIOS or they will not be detected.
5541 *
5542 * See http://thinkwiki.org/wiki/List_of_DMI_IDs
5543 */
5544 while ((dev = dmi_find_device(DMI_DEV_TYPE_OEM_STRING, NULL, dev))) {
5545 if (sscanf(dev->name,
5546 "IBM ThinkPad Embedded Controller -[%17c",
5547 ec_fw_string) == 1) {
5548 ec_fw_string[sizeof(ec_fw_string) - 1] = 0;
5549 ec_fw_string[strcspn(ec_fw_string, " ]")] = 0;
d5a2f2f1
HMH		 5550
5551 tp->ec_version_str = kstrdup(ec_fw_string, GFP_KERNEL);
5552 tp->ec_model = ec_fw_string[0]
5553 | (ec_fw_string[1] << 8);
5554 break;
78f81cc4 5555 }
1da177e4 5556 }
d5a2f2f1
HMH		 5557
5558 tp->model_str = kstrdup(dmi_get_system_info(DMI_PRODUCT_VERSION),
5559 GFP_KERNEL);
5560 if (strnicmp(tp->model_str, "ThinkPad", 8) != 0) {
5561 kfree(tp->model_str);
5562 tp->model_str = NULL;
5563 }
1da177e4
LT		 5564}
5565
5fba344c
HMH		 5566static int __init probe_for_thinkpad(void)
5567{
5568 int is_thinkpad;
5569
5570 if (acpi_disabled)
5571 return -ENODEV;
5572
5573 /*
5574 * Non-ancient models have better DMI tagging, but very old models
5575 * don't.
5576 */
d5a2f2f1 5577 is_thinkpad = (thinkpad_id.model_str != NULL);
5fba344c
HMH		 5578
5579 /* ec is required because many other handles are relative to it */
8d376cd6 5580 IBM_ACPIHANDLE_INIT(ec);
5fba344c
HMH		 5581 if (!ec_handle) {
5582 if (is_thinkpad)
5583 printk(IBM_ERR
5584 "Not yet supported ThinkPad detected!\n");
5585 return -ENODEV;
5586 }
5587
0dcef77c
HMH		 5588 /*
5589 * Risks a regression on very old machines, but reduces potential
5590 * false positives a damn great deal
5591 */
5592 if (!is_thinkpad)
d5a2f2f1 5593 is_thinkpad = (thinkpad_id.vendor == PCI_VENDOR_ID_IBM);
0dcef77c
HMH		 5594
5595 if (!is_thinkpad && !force_load)
5596 return -ENODEV;
5597
5fba344c
HMH		 5598 return 0;
5599}
5600
5601
56b6aeb0 5602/* Module init, exit, parameters */
1da177e4 5603
a5763f22
HMH		 5604static struct ibm_init_struct ibms_init[] __initdata = {
5605 {
5606 .init = thinkpad_acpi_driver_init,
5607 .data = &thinkpad_acpi_driver_data,
5608 },
5609 {
5610 .init = hotkey_init,
5611 .data = &hotkey_driver_data,
5612 },
5613 {
5614 .init = bluetooth_init,
5615 .data = &bluetooth_driver_data,
5616 },
5617 {
5618 .init = wan_init,
5619 .data = &wan_driver_data,
5620 },
5621 {
5622 .init = video_init,
5623 .data = &video_driver_data,
5624 },
5625 {
5626 .init = light_init,
5627 .data = &light_driver_data,
5628 },
5629#ifdef CONFIG_THINKPAD_ACPI_DOCK
5630 {
5631 .init = dock_init,
5632 .data = &dock_driver_data[0],
5633 },
5634 {
d94a7f16 5635 .init = dock_init2,
a5763f22
HMH		 5636 .data = &dock_driver_data[1],
5637 },
5638#endif
5639#ifdef CONFIG_THINKPAD_ACPI_BAY
5640 {
5641 .init = bay_init,
5642 .data = &bay_driver_data,
5643 },
5644#endif
5645 {
5646 .init = cmos_init,
5647 .data = &cmos_driver_data,
5648 },
5649 {
5650 .init = led_init,
5651 .data = &led_driver_data,
5652 },
5653 {
5654 .init = beep_init,
5655 .data = &beep_driver_data,
5656 },
5657 {
5658 .init = thermal_init,
5659 .data = &thermal_driver_data,
5660 },
5661 {
5662 .data = &ecdump_driver_data,
5663 },
5664 {
5665 .init = brightness_init,
5666 .data = &brightness_driver_data,
5667 },
5668 {
5669 .data = &volume_driver_data,
5670 },
5671 {
5672 .init = fan_init,
5673 .data = &fan_driver_data,
5674 },
5675};
5676
3945ac36 5677static int __init set_ibm_param(const char *val, struct kernel_param *kp)
1da177e4
LT		 5678{
5679 unsigned int i;
a5763f22 5680 struct ibm_struct *ibm;
1da177e4 5681
59f91ff1
HMH		 5682 if (!kp || !kp->name || !val)
5683 return -EINVAL;
5684
a5763f22
HMH		 5685 for (i = 0; i < ARRAY_SIZE(ibms_init); i++) {
5686 ibm = ibms_init[i].data;
59f91ff1
HMH		 5687 WARN_ON(ibm == NULL);
5688
5689 if (!ibm || !ibm->name)
5690 continue;
a5763f22
HMH		 5691
5692 if (strcmp(ibm->name, kp->name) == 0 && ibm->write) {
5693 if (strlen(val) > sizeof(ibms_init[i].param) - 2)
78f81cc4 5694 return -ENOSPC;
a5763f22
HMH		 5695 strcpy(ibms_init[i].param, val);
5696 strcat(ibms_init[i].param, ",");
78f81cc4
BD		 5697 return 0;
5698 }
a5763f22 5699 }
1da177e4 5700
1da177e4
LT		 5701 return -EINVAL;
5702}
5703
56b6aeb0 5704module_param(experimental, int, 0);
f68080f8
HMH		 5705MODULE_PARM_DESC(experimental,
5706 "Enables experimental features when non-zero");
56b6aeb0 5707
132ce091 5708module_param_named(debug, dbg_level, uint, 0);
f68080f8 5709MODULE_PARM_DESC(debug, "Sets debug level bit-mask");
132ce091 5710
86cc9445 5711module_param(force_load, bool, 0);
f68080f8
HMH		 5712MODULE_PARM_DESC(force_load,
5713 "Attempts to load the driver even on a "
5714 "mis-identified ThinkPad when true");
0dcef77c 5715
86cc9445 5716module_param_named(fan_control, fan_control_allowed, bool, 0);
f68080f8
HMH		 5717MODULE_PARM_DESC(fan_control,
5718 "Enables setting fan parameters features when true");
ecf2a80a 5719
24d3b774 5720module_param_named(brightness_mode, brightness_mode, int, 0);
f68080f8
HMH		 5721MODULE_PARM_DESC(brightness_mode,
5722 "Selects brightness control strategy: "
5723 "0=auto, 1=EC, 2=CMOS, 3=both");
24d3b774 5724
87cc537a 5725module_param(brightness_enable, uint, 0);
f68080f8
HMH		 5726MODULE_PARM_DESC(brightness_enable,
5727 "Enables backlight control when 1, disables when 0");
87cc537a 5728
ff80f137 5729module_param(hotkey_report_mode, uint, 0);
f68080f8
HMH		 5730MODULE_PARM_DESC(hotkey_report_mode,
5731 "used for backwards compatibility with userspace, "
5732 "see documentation");
ff80f137 5733
1da177e4 5734#define IBM_PARAM(feature) \
f68080f8
HMH		 5735 module_param_call(feature, set_ibm_param, NULL, NULL, 0); \
5736 MODULE_PARM_DESC(feature, "Simulates thinkpad-aci procfs command " \
5737 "at module load, see documentation")
1da177e4 5738
78f81cc4
BD		 5739IBM_PARAM(hotkey);
5740IBM_PARAM(bluetooth);
5741IBM_PARAM(video);
5742IBM_PARAM(light);
85998248 5743#ifdef CONFIG_THINKPAD_ACPI_DOCK
78f81cc4 5744IBM_PARAM(dock);
63e5f248 5745#endif
85998248 5746#ifdef CONFIG_THINKPAD_ACPI_BAY
78f81cc4 5747IBM_PARAM(bay);
85998248 5748#endif /* CONFIG_THINKPAD_ACPI_BAY */
78f81cc4
BD		 5749IBM_PARAM(cmos);
5750IBM_PARAM(led);
5751IBM_PARAM(beep);
5752IBM_PARAM(ecdump);
5753IBM_PARAM(brightness);
5754IBM_PARAM(volume);
5755IBM_PARAM(fan);
5756
b21a15f6
HMH		 5757static void thinkpad_acpi_module_exit(void)
5758{
5759 struct ibm_struct *ibm, *itmp;
5760
5761 tpacpi_lifecycle = TPACPI_LIFE_EXITING;
5762
5763 list_for_each_entry_safe_reverse(ibm, itmp,
5764 &tpacpi_all_drivers,
5765 all_drivers) {
5766 ibm_exit(ibm);
5767 }
5768
5769 dbg_printk(TPACPI_DBG_INIT, "finished subdriver exit path...\n");
5770
5771 if (tpacpi_inputdev) {
5772 if (tp_features.input_device_registered)
5773 input_unregister_device(tpacpi_inputdev);
5774 else
5775 input_free_device(tpacpi_inputdev);
5776 }
5777
5778 if (tpacpi_hwmon)
5779 hwmon_device_unregister(tpacpi_hwmon);
5780
5781 if (tp_features.sensors_pdev_attrs_registered)
5782 device_remove_file(&tpacpi_sensors_pdev->dev,
5783 &dev_attr_thinkpad_acpi_pdev_name);
5784 if (tpacpi_sensors_pdev)
5785 platform_device_unregister(tpacpi_sensors_pdev);
5786 if (tpacpi_pdev)
5787 platform_device_unregister(tpacpi_pdev);
5788
5789 if (tp_features.sensors_pdrv_attrs_registered)
5790 tpacpi_remove_driver_attributes(&tpacpi_hwmon_pdriver.driver);
5791 if (tp_features.platform_drv_attrs_registered)
5792 tpacpi_remove_driver_attributes(&tpacpi_pdriver.driver);
5793
5794 if (tp_features.sensors_pdrv_registered)
5795 platform_driver_unregister(&tpacpi_hwmon_pdriver);
5796
5797 if (tp_features.platform_drv_registered)
5798 platform_driver_unregister(&tpacpi_pdriver);
5799
5800 if (proc_dir)
5801 remove_proc_entry(IBM_PROC_DIR, acpi_root_dir);
5802
5803 kfree(thinkpad_id.bios_version_str);
5804 kfree(thinkpad_id.ec_version_str);
5805 kfree(thinkpad_id.model_str);
5806}
5807
f74a27d4 5808
1def7115 5809static int __init thinkpad_acpi_module_init(void)
1da177e4
LT		 5810{
5811 int ret, i;
5812
8fef502e
HMH		 5813 tpacpi_lifecycle = TPACPI_LIFE_INIT;
5814
ff80f137
HMH		 5815 /* Parameter checking */
5816 if (hotkey_report_mode > 2)
5817 return -EINVAL;
5818
54ae1501 5819 /* Driver-level probe */
d5a2f2f1
HMH		 5820
5821 get_thinkpad_model_data(&thinkpad_id);
5fba344c 5822 ret = probe_for_thinkpad();
d5a2f2f1
HMH		 5823 if (ret) {
5824 thinkpad_acpi_module_exit();
5fba344c 5825 return ret;
d5a2f2f1 5826 }
1da177e4 5827
54ae1501 5828 /* Driver initialization */
d5a2f2f1 5829
8d376cd6
HMH		 5830 IBM_ACPIHANDLE_INIT(ecrd);
5831 IBM_ACPIHANDLE_INIT(ecwr);
1da177e4 5832
8d376cd6 5833 proc_dir = proc_mkdir(IBM_PROC_DIR, acpi_root_dir);
1da177e4 5834 if (!proc_dir) {
8d376cd6 5835 printk(IBM_ERR "unable to create proc dir " IBM_PROC_DIR);
1def7115 5836 thinkpad_acpi_module_exit();
1da177e4
LT		 5837 return -ENODEV;
5838 }
5839 proc_dir->owner = THIS_MODULE;
78f81cc4 5840
54ae1501
HMH		 5841 ret = platform_driver_register(&tpacpi_pdriver);
5842 if (ret) {
7fd40029 5843 printk(IBM_ERR "unable to register main platform driver\n");
54ae1501
HMH		 5844 thinkpad_acpi_module_exit();
5845 return ret;
5846 }
ac36393d
HMH		 5847 tp_features.platform_drv_registered = 1;
5848
7fd40029
HMH		 5849 ret = platform_driver_register(&tpacpi_hwmon_pdriver);
5850 if (ret) {
5851 printk(IBM_ERR "unable to register hwmon platform driver\n");
5852 thinkpad_acpi_module_exit();
5853 return ret;
5854 }
5855 tp_features.sensors_pdrv_registered = 1;
5856
176750d6 5857 ret = tpacpi_create_driver_attributes(&tpacpi_pdriver.driver);
2369cc94
HMH		 5858 if (!ret) {
5859 tp_features.platform_drv_attrs_registered = 1;
5860 ret = tpacpi_create_driver_attributes(&tpacpi_hwmon_pdriver.driver);
5861 }
176750d6
HMH		 5862 if (ret) {
5863 printk(IBM_ERR "unable to create sysfs driver attributes\n");
5864 thinkpad_acpi_module_exit();
5865 return ret;
5866 }
2369cc94 5867 tp_features.sensors_pdrv_attrs_registered = 1;
176750d6 5868
54ae1501
HMH		 5869
5870 /* Device initialization */
5871 tpacpi_pdev = platform_device_register_simple(IBM_DRVR_NAME, -1,
5872 NULL, 0);
5873 if (IS_ERR(tpacpi_pdev)) {
5874 ret = PTR_ERR(tpacpi_pdev);
5875 tpacpi_pdev = NULL;
5876 printk(IBM_ERR "unable to register platform device\n");
5877 thinkpad_acpi_module_exit();
5878 return ret;
5879 }
7fd40029
HMH		 5880 tpacpi_sensors_pdev = platform_device_register_simple(
5881 IBM_HWMON_DRVR_NAME,
5882 -1, NULL, 0);
5883 if (IS_ERR(tpacpi_sensors_pdev)) {
5884 ret = PTR_ERR(tpacpi_sensors_pdev);
5885 tpacpi_sensors_pdev = NULL;
5886 printk(IBM_ERR "unable to register hwmon platform device\n");
5887 thinkpad_acpi_module_exit();
5888 return ret;
5889 }
5890 ret = device_create_file(&tpacpi_sensors_pdev->dev,
5891 &dev_attr_thinkpad_acpi_pdev_name);
5892 if (ret) {
5893 printk(IBM_ERR
5894 "unable to create sysfs hwmon device attributes\n");
5895 thinkpad_acpi_module_exit();
5896 return ret;
5897 }
5898 tp_features.sensors_pdev_attrs_registered = 1;
5899 tpacpi_hwmon = hwmon_device_register(&tpacpi_sensors_pdev->dev);
54ae1501
HMH		 5900 if (IS_ERR(tpacpi_hwmon)) {
5901 ret = PTR_ERR(tpacpi_hwmon);
5902 tpacpi_hwmon = NULL;
5903 printk(IBM_ERR "unable to register hwmon device\n");
5904 thinkpad_acpi_module_exit();
5905 return ret;
5906 }
8523ed6f 5907 mutex_init(&tpacpi_inputdev_send_mutex);
7f5d1cd6
HMH		 5908 tpacpi_inputdev = input_allocate_device();
5909 if (!tpacpi_inputdev) {
5910 printk(IBM_ERR "unable to allocate input device\n");
5911 thinkpad_acpi_module_exit();
5912 return -ENOMEM;
5913 } else {
5914 /* Prepare input device, but don't register */
5915 tpacpi_inputdev->name = "ThinkPad Extra Buttons";
5916 tpacpi_inputdev->phys = IBM_DRVR_NAME "/input0";
5917 tpacpi_inputdev->id.bustype = BUS_HOST;
edf0e0e5
HMH		 5918 tpacpi_inputdev->id.vendor = (thinkpad_id.vendor) ?
5919 thinkpad_id.vendor :
5920 PCI_VENDOR_ID_IBM;
7f5d1cd6
HMH		 5921 tpacpi_inputdev->id.product = TPACPI_HKEY_INPUT_PRODUCT;
5922 tpacpi_inputdev->id.version = TPACPI_HKEY_INPUT_VERSION;
5923 }
a5763f22
HMH		 5924 for (i = 0; i < ARRAY_SIZE(ibms_init); i++) {
5925 ret = ibm_init(&ibms_init[i]);
5926 if (ret >= 0 && *ibms_init[i].param)
5927 ret = ibms_init[i].data->write(ibms_init[i].param);
1da177e4 5928 if (ret < 0) {
1def7115 5929 thinkpad_acpi_module_exit();
1da177e4
LT		 5930 return ret;
5931 }
5932 }
7f5d1cd6
HMH		 5933 ret = input_register_device(tpacpi_inputdev);
5934 if (ret < 0) {
5935 printk(IBM_ERR "unable to register input device\n");
5936 thinkpad_acpi_module_exit();
5937 return ret;
5938 } else {
5939 tp_features.input_device_registered = 1;
5940 }
1da177e4 5941
8fef502e 5942 tpacpi_lifecycle = TPACPI_LIFE_RUNNING;
1da177e4
LT		 5943 return 0;
5944}
5945
f68080f8
HMH		 5946/* Please remove this in year 2009 */
5947MODULE_ALIAS("ibm_acpi");
5948
5949/*
5950 * DMI matching for module autoloading
5951 *
5952 * See http://thinkwiki.org/wiki/List_of_DMI_IDs
5953 * See http://thinkwiki.org/wiki/BIOS_Upgrade_Downloads
5954 *
5955 * Only models listed in thinkwiki will be supported, so add yours
5956 * if it is not there yet.
5957 */
5958#define IBM_BIOS_MODULE_ALIAS(__type) \
5959 MODULE_ALIAS("dmi:bvnIBM:bvr" __type "ET??WW")
5960
5961/* Non-ancient thinkpads */
5962MODULE_ALIAS("dmi:bvnIBM:*:svnIBM:*:pvrThinkPad*:rvnIBM:*");
5963MODULE_ALIAS("dmi:bvnLENOVO:*:svnLENOVO:*:pvrThinkPad*:rvnLENOVO:*");
5964
5965/* Ancient thinkpad BIOSes have to be identified by
5966 * BIOS type or model number, and there are far less
5967 * BIOS types than model numbers... */
5968IBM_BIOS_MODULE_ALIAS("I[B,D,H,I,M,N,O,T,W,V,Y,Z]");
5969IBM_BIOS_MODULE_ALIAS("1[0,3,6,8,A-G,I,K,M-P,S,T]");
5970IBM_BIOS_MODULE_ALIAS("K[U,X-Z]");
5971
5972MODULE_AUTHOR("Borislav Deianov, Henrique de Moraes Holschuh");
5973MODULE_DESCRIPTION(IBM_DESC);
5974MODULE_VERSION(IBM_VERSION);
5975MODULE_LICENSE("GPL");
5976
1def7115
HMH		 5977module_init(thinkpad_acpi_module_init);
5978module_exit(thinkpad_acpi_module_exit);
Linux kernel - Deliverables
This page took 0.708463 seconds and 5 git commands to generate.