]> git.proxmox.com Git - mirror_ubuntu-bionic-kernel.git/blame - drivers/misc/thinkpad_acpi.c
projects / mirror_ubuntu-bionic-kernel.git / blame
? search:
summary | shortlog | log | commit | commitdiff | tree
blob | blame (incremental) | history | HEAD
ACPI: thinkpad-acpi: rate-limit CMOS/EC unsynced error messages
[mirror_ubuntu-bionic-kernel.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>
6a2e293c 6 * Copyright (C) 2006-2008 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
1cee5cce 24#define TPACPI_VERSION "0.19"
50ebec09 25#define TPACPI_SYSFS_VERSION 0x020200
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 115/* ACPI HIDs */
e0c7dfe7 116#define TPACPI_ACPI_HKEY_HID "IBM0068"
b21a15f6
HMH		 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
e0c7dfe7
HMH		 127#define TPACPI_NAME "thinkpad"
128#define TPACPI_DESC "ThinkPad ACPI Extras"
129#define TPACPI_FILE TPACPI_NAME "_acpi"
130#define TPACPI_URL "http://ibm-acpi.sf.net/"
131#define TPACPI_MAIL "ibm-acpi-devel@lists.sourceforge.net"
b21a15f6 132
e0c7dfe7
HMH		 133#define TPACPI_PROC_DIR "ibm"
134#define TPACPI_ACPI_EVENT_PREFIX "ibm"
135#define TPACPI_DRVR_NAME TPACPI_FILE
136#define TPACPI_HWMON_DRVR_NAME TPACPI_NAME "_hwmon"
b21a15f6 137
e0c7dfe7 138#define TPACPI_MAX_ACPI_ARGS 3
b21a15f6 139
0c78039f 140/* Debugging */
e0c7dfe7
HMH		 141#define TPACPI_LOG TPACPI_FILE ": "
142#define TPACPI_ERR KERN_ERR TPACPI_LOG
143#define TPACPI_NOTICE KERN_NOTICE TPACPI_LOG
144#define TPACPI_INFO KERN_INFO TPACPI_LOG
145#define TPACPI_DEBUG KERN_DEBUG TPACPI_LOG
b21a15f6 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) \
35ff8b9f
HMH		 153 printk(TPACPI_DEBUG "%s: " format, __func__ , ## arg); \
154 } while (0)
0c78039f
HMH		 155#ifdef CONFIG_THINKPAD_ACPI_DEBUG
156#define vdbg_printk(a_dbg_level, format, arg...) \
157 dbg_printk(a_dbg_level, format, ## arg)
158static const char *str_supported(int is_supported);
159#else
160#define vdbg_printk(a_dbg_level, format, arg...)
161#endif
162
35ff8b9f
HMH		 163#define onoff(status, bit) ((status) & (1 << (bit)) ? "on" : "off")
164#define enabled(status, bit) ((status) & (1 << (bit)) ? "enabled" : "disabled")
165#define strlencmp(a, b) (strncmp((a), (b), strlen(b)))
0c78039f 166
0c78039f
HMH		 167
168/****************************************************************************
b21a15f6 169 * Driver-wide structs and misc. variables
0c78039f
HMH		 170 */
171
172struct ibm_struct;
173
174struct tp_acpi_drv_struct {
175 const struct acpi_device_id *hid;
176 struct acpi_driver *driver;
177
178 void (*notify) (struct ibm_struct *, u32);
179 acpi_handle *handle;
180 u32 type;
181 struct acpi_device *device;
182};
183
184struct ibm_struct {
185 char *name;
186
187 int (*read) (char *);
188 int (*write) (char *);
189 void (*exit) (void);
190 void (*resume) (void);
083f1760 191 void (*suspend) (pm_message_t state);
0c78039f
HMH		 192
193 struct list_head all_drivers;
194
195 struct tp_acpi_drv_struct *acpi;
196
197 struct {
198 u8 acpi_driver_registered:1;
199 u8 acpi_notify_installed:1;
200 u8 proc_created:1;
201 u8 init_called:1;
202 u8 experimental:1;
203 } flags;
204};
205
206struct ibm_init_struct {
207 char param[32];
208
209 int (*init) (struct ibm_init_struct *);
210 struct ibm_struct *data;
211};
212
213static struct {
214#ifdef CONFIG_THINKPAD_ACPI_BAY
215 u32 bay_status:1;
216 u32 bay_eject:1;
217 u32 bay_status2:1;
218 u32 bay_eject2:1;
219#endif
220 u32 bluetooth:1;
221 u32 hotkey:1;
222 u32 hotkey_mask:1;
223 u32 hotkey_wlsw:1;
6c231bd5 224 u32 hotkey_tablet:1;
0c78039f
HMH		 225 u32 light:1;
226 u32 light_status:1;
227 u32 bright_16levels:1;
b5972796 228 u32 bright_acpimode:1;
0c78039f
HMH		 229 u32 wan:1;
230 u32 fan_ctrl_status_undef:1;
231 u32 input_device_registered:1;
232 u32 platform_drv_registered:1;
233 u32 platform_drv_attrs_registered:1;
234 u32 sensors_pdrv_registered:1;
235 u32 sensors_pdrv_attrs_registered:1;
236 u32 sensors_pdev_attrs_registered:1;
237 u32 hotkey_poll_active:1;
238} tp_features;
239
92889022
HMH		 240static struct {
241 u16 hotkey_mask_ff:1;
2d5e94d7 242 u16 bright_cmos_ec_unsync:1;
92889022
HMH		 243} tp_warned;
244
0c78039f
HMH		 245struct thinkpad_id_data {
246 unsigned int vendor; /* ThinkPad vendor:
247 * PCI_VENDOR_ID_IBM/PCI_VENDOR_ID_LENOVO */
248
249 char *bios_version_str; /* Something like 1ZET51WW (1.03z) */
250 char *ec_version_str; /* Something like 1ZHT51WW-1.04a */
251
252 u16 bios_model; /* Big Endian, TP-1Y = 0x5931, 0 = unknown */
253 u16 ec_model;
254
8c74adbc
HMH		 255 char *model_str; /* ThinkPad T43 */
256 char *nummodel_str; /* 9384A9C for a 9384-A9C model */
0c78039f 257};
0c78039f
HMH		 258static struct thinkpad_id_data thinkpad_id;
259
8fef502e
HMH		 260static enum {
261 TPACPI_LIFE_INIT = 0,
262 TPACPI_LIFE_RUNNING,
263 TPACPI_LIFE_EXITING,
264} tpacpi_lifecycle;
265
b21a15f6
HMH		 266static int experimental;
267static u32 dbg_level;
268
56b6aeb0
HMH		 269/****************************************************************************
270 ****************************************************************************
271 *
272 * ACPI Helpers and device model
273 *
274 ****************************************************************************
275 ****************************************************************************/
276
277/*************************************************************************
278 * ACPI basic handles
279 */
1da177e4 280
94954cc6 281static acpi_handle root_handle;
1da177e4 282
e0c7dfe7 283#define TPACPI_HANDLE(object, parent, paths...) \
1da177e4
LT		 284 static acpi_handle object##_handle; \
285 static acpi_handle *object##_parent = &parent##_handle; \
78f81cc4 286 static char *object##_path; \
1da177e4
LT		 287 static char *object##_paths[] = { paths }
288
e0c7dfe7 289TPACPI_HANDLE(ec, root, "\\_SB.PCI0.ISA.EC0", /* 240, 240x */
78f81cc4
BD		 290 "\\_SB.PCI.ISA.EC", /* 570 */
291 "\\_SB.PCI0.ISA0.EC0", /* 600e/x, 770e, 770x */
292 "\\_SB.PCI0.ISA.EC", /* A21e, A2xm/p, T20-22, X20-21 */
293 "\\_SB.PCI0.AD4S.EC0", /* i1400, R30 */
294 "\\_SB.PCI0.ICH3.EC0", /* R31 */
295 "\\_SB.PCI0.LPC.EC", /* all others */
56b6aeb0 296 );
78f81cc4 297
e0c7dfe7
HMH		 298TPACPI_HANDLE(ecrd, ec, "ECRD"); /* 570 */
299TPACPI_HANDLE(ecwr, ec, "ECWR"); /* 570 */
78f81cc4 300
35ff8b9f
HMH		 301TPACPI_HANDLE(cmos, root, "\\UCMS", /* R50, R50e, R50p, R51, */
302 /* T4x, X31, X40 */
78f81cc4
BD		 303 "\\CMOS", /* A3x, G4x, R32, T23, T30, X22-24, X30 */
304 "\\CMS", /* R40, R40e */
56b6aeb0 305 ); /* all others */
78f81cc4 306
e0c7dfe7 307TPACPI_HANDLE(hkey, ec, "\\_SB.HKEY", /* 600e/x, 770e, 770x */
78f81cc4
BD		 308 "^HKEY", /* R30, R31 */
309 "HKEY", /* all others */
56b6aeb0 310 ); /* 570 */
78f81cc4 311
d7c1d17d
HMH		 312TPACPI_HANDLE(vid, root, "\\_SB.PCI.AGP.VGA", /* 570 */
313 "\\_SB.PCI0.AGP0.VID0", /* 600e/x, 770x */
314 "\\_SB.PCI0.VID0", /* 770e */
315 "\\_SB.PCI0.VID", /* A21e, G4x, R50e, X30, X40 */
316 "\\_SB.PCI0.AGP.VID", /* all others */
317 ); /* R30, R31 */
318
78f81cc4 319
56b6aeb0
HMH		 320/*************************************************************************
321 * ACPI helpers
a8b7a662
HMH		 322 */
323
1da177e4
LT		 324static int acpi_evalf(acpi_handle handle,
325 void *res, char *method, char *fmt, ...)
326{
327 char *fmt0 = fmt;
78f81cc4 328 struct acpi_object_list params;
e0c7dfe7 329 union acpi_object in_objs[TPACPI_MAX_ACPI_ARGS];
78f81cc4
BD		 330 struct acpi_buffer result, *resultp;
331 union acpi_object out_obj;
332 acpi_status status;
333 va_list ap;
334 char res_type;
335 int success;
336 int quiet;
1da177e4
LT		 337
338 if (!*fmt) {
e0c7dfe7 339 printk(TPACPI_ERR "acpi_evalf() called with empty format\n");
1da177e4
LT		 340 return 0;
341 }
342
343 if (*fmt == 'q') {
344 quiet = 1;
345 fmt++;
346 } else
347 quiet = 0;
348
349 res_type = *(fmt++);
350
351 params.count = 0;
352 params.pointer = &in_objs[0];
353
354 va_start(ap, fmt);
355 while (*fmt) {
356 char c = *(fmt++);
357 switch (c) {
358 case 'd': /* int */
359 in_objs[params.count].integer.value = va_arg(ap, int);
360 in_objs[params.count++].type = ACPI_TYPE_INTEGER;
361 break;
78f81cc4 362 /* add more types as needed */
1da177e4 363 default:
e0c7dfe7 364 printk(TPACPI_ERR "acpi_evalf() called "
1da177e4
LT		 365 "with invalid format character '%c'\n", c);
366 return 0;
367 }
368 }
369 va_end(ap);
370
78f81cc4
BD		 371 if (res_type != 'v') {
372 result.length = sizeof(out_obj);
373 result.pointer = &out_obj;
374 resultp = &result;
375 } else
376 resultp = NULL;
1da177e4 377
78f81cc4 378 status = acpi_evaluate_object(handle, method, &params, resultp);
1da177e4
LT		 379
380 switch (res_type) {
78f81cc4 381 case 'd': /* int */
1da177e4
LT		 382 if (res)
383 *(int *)res = out_obj.integer.value;
384 success = status == AE_OK && out_obj.type == ACPI_TYPE_INTEGER;
385 break;
78f81cc4 386 case 'v': /* void */
1da177e4
LT		 387 success = status == AE_OK;
388 break;
78f81cc4 389 /* add more types as needed */
1da177e4 390 default:
e0c7dfe7 391 printk(TPACPI_ERR "acpi_evalf() called "
1da177e4
LT		 392 "with invalid format character '%c'\n", res_type);
393 return 0;
394 }
395
56b6aeb0 396 if (!success && !quiet)
e0c7dfe7 397 printk(TPACPI_ERR "acpi_evalf(%s, %s, ...) failed: %d\n",
56b6aeb0
HMH		 398 method, fmt0, status);
399
400 return success;
401}
402
35ff8b9f 403static int acpi_ec_read(int i, u8 *p)
56b6aeb0
HMH		 404{
405 int v;
406
407 if (ecrd_handle) {
408 if (!acpi_evalf(ecrd_handle, &v, NULL, "dd", i))
409 return 0;
410 *p = v;
411 } else {
412 if (ec_read(i, p) < 0)
413 return 0;
414 }
415
416 return 1;
417}
418
419static int acpi_ec_write(int i, u8 v)
420{
421 if (ecwr_handle) {
422 if (!acpi_evalf(ecwr_handle, NULL, NULL, "vdd", i, v))
423 return 0;
424 } else {
425 if (ec_write(i, v) < 0)
426 return 0;
427 }
428
429 return 1;
430}
431
013c40e4 432#if defined(CONFIG_THINKPAD_ACPI_DOCK) || defined(CONFIG_THINKPAD_ACPI_BAY)
56b6aeb0
HMH		 433static int _sta(acpi_handle handle)
434{
435 int status;
436
437 if (!handle || !acpi_evalf(handle, &status, "_STA", "d"))
438 status = 0;
439
440 return status;
441}
013c40e4 442#endif
56b6aeb0 443
c9bea99c
HMH		 444static int issue_thinkpad_cmos_command(int cmos_cmd)
445{
446 if (!cmos_handle)
447 return -ENXIO;
448
449 if (!acpi_evalf(cmos_handle, NULL, NULL, "vd", cmos_cmd))
450 return -EIO;
451
452 return 0;
453}
454
56b6aeb0
HMH		 455/*************************************************************************
456 * ACPI device model
457 */
458
35ff8b9f
HMH		 459#define TPACPI_ACPIHANDLE_INIT(object) \
460 drv_acpi_handle_init(#object, &object##_handle, *object##_parent, \
f74a27d4
HMH		 461 object##_paths, ARRAY_SIZE(object##_paths), &object##_path)
462
8d376cd6 463static void drv_acpi_handle_init(char *name,
5fba344c
HMH		 464 acpi_handle *handle, acpi_handle parent,
465 char **paths, int num_paths, char **path)
56b6aeb0
HMH		 466{
467 int i;
468 acpi_status status;
469
5ae930e6
HMH		 470 vdbg_printk(TPACPI_DBG_INIT, "trying to locate ACPI handle for %s\n",
471 name);
472
56b6aeb0
HMH		 473 for (i = 0; i < num_paths; i++) {
474 status = acpi_get_handle(parent, paths[i], handle);
475 if (ACPI_SUCCESS(status)) {
476 *path = paths[i];
5ae930e6
HMH		 477 dbg_printk(TPACPI_DBG_INIT,
478 "Found ACPI handle %s for %s\n",
479 *path, name);
56b6aeb0
HMH		 480 return;
481 }
482 }
483
5ae930e6
HMH		 484 vdbg_printk(TPACPI_DBG_INIT, "ACPI handle for %s not found\n",
485 name);
56b6aeb0
HMH		 486 *handle = NULL;
487}
488
8d376cd6 489static void dispatch_acpi_notify(acpi_handle handle, u32 event, void *data)
56b6aeb0
HMH		 490{
491 struct ibm_struct *ibm = data;
492
8fef502e
HMH		 493 if (tpacpi_lifecycle != TPACPI_LIFE_RUNNING)
494 return;
495
8d376cd6 496 if (!ibm || !ibm->acpi || !ibm->acpi->notify)
56b6aeb0
HMH		 497 return;
498
8d376cd6 499 ibm->acpi->notify(ibm, event);
56b6aeb0
HMH		 500}
501
8d376cd6 502static int __init setup_acpi_notify(struct ibm_struct *ibm)
56b6aeb0
HMH		 503{
504 acpi_status status;
5ae930e6 505 int rc;
56b6aeb0 506
8d376cd6
HMH		 507 BUG_ON(!ibm->acpi);
508
509 if (!*ibm->acpi->handle)
56b6aeb0
HMH		 510 return 0;
511
5ae930e6 512 vdbg_printk(TPACPI_DBG_INIT,
fe08bc4b
HMH		 513 "setting up ACPI notify for %s\n", ibm->name);
514
5ae930e6
HMH		 515 rc = acpi_bus_get_device(*ibm->acpi->handle, &ibm->acpi->device);
516 if (rc < 0) {
e0c7dfe7 517 printk(TPACPI_ERR "acpi_bus_get_device(%s) failed: %d\n",
5ae930e6 518 ibm->name, rc);
56b6aeb0
HMH		 519 return -ENODEV;
520 }
521
8d376cd6
HMH		 522 acpi_driver_data(ibm->acpi->device) = ibm;
523 sprintf(acpi_device_class(ibm->acpi->device), "%s/%s",
e0c7dfe7 524 TPACPI_ACPI_EVENT_PREFIX,
643f12db 525 ibm->name);
56b6aeb0 526
8d376cd6
HMH		 527 status = acpi_install_notify_handler(*ibm->acpi->handle,
528 ibm->acpi->type, dispatch_acpi_notify, ibm);
56b6aeb0
HMH		 529 if (ACPI_FAILURE(status)) {
530 if (status == AE_ALREADY_EXISTS) {
35ff8b9f
HMH		 531 printk(TPACPI_NOTICE
532 "another device driver is already "
533 "handling %s events\n", ibm->name);
56b6aeb0 534 } else {
35ff8b9f
HMH		 535 printk(TPACPI_ERR
536 "acpi_install_notify_handler(%s) failed: %d\n",
537 ibm->name, status);
56b6aeb0
HMH		 538 }
539 return -ENODEV;
540 }
8d376cd6 541 ibm->flags.acpi_notify_installed = 1;
56b6aeb0
HMH		 542 return 0;
543}
544
8d376cd6 545static int __init tpacpi_device_add(struct acpi_device *device)
56b6aeb0
HMH		 546{
547 return 0;
548}
549
6700121b 550static int __init register_tpacpi_subdriver(struct ibm_struct *ibm)
56b6aeb0 551{
5ae930e6 552 int rc;
56b6aeb0 553
fe08bc4b
HMH		 554 dbg_printk(TPACPI_DBG_INIT,
555 "registering %s as an ACPI driver\n", ibm->name);
556
8d376cd6
HMH		 557 BUG_ON(!ibm->acpi);
558
559 ibm->acpi->driver = kzalloc(sizeof(struct acpi_driver), GFP_KERNEL);
560 if (!ibm->acpi->driver) {
e0c7dfe7 561 printk(TPACPI_ERR "kzalloc(ibm->driver) failed\n");
5fba344c 562 return -ENOMEM;
56b6aeb0
HMH		 563 }
564
e0c7dfe7 565 sprintf(ibm->acpi->driver->name, "%s_%s", TPACPI_NAME, ibm->name);
8d376cd6 566 ibm->acpi->driver->ids = ibm->acpi->hid;
1ba90e3a 567
8d376cd6 568 ibm->acpi->driver->ops.add = &tpacpi_device_add;
56b6aeb0 569
5ae930e6
HMH		 570 rc = acpi_bus_register_driver(ibm->acpi->driver);
571 if (rc < 0) {
e0c7dfe7 572 printk(TPACPI_ERR "acpi_bus_register_driver(%s) failed: %d\n",
1ba90e3a 573 ibm->name, rc);
8d376cd6
HMH		 574 kfree(ibm->acpi->driver);
575 ibm->acpi->driver = NULL;
5ae930e6 576 } else if (!rc)
8d376cd6 577 ibm->flags.acpi_driver_registered = 1;
56b6aeb0 578
5ae930e6 579 return rc;
56b6aeb0
HMH		 580}
581
582
583/****************************************************************************
584 ****************************************************************************
585 *
586 * Procfs Helpers
587 *
588 ****************************************************************************
589 ****************************************************************************/
590
8d376cd6
HMH		 591static int dispatch_procfs_read(char *page, char **start, off_t off,
592 int count, int *eof, void *data)
56b6aeb0
HMH		 593{
594 struct ibm_struct *ibm = data;
595 int len;
596
597 if (!ibm || !ibm->read)
598 return -EINVAL;
599
600 len = ibm->read(page);
601 if (len < 0)
602 return len;
603
604 if (len <= off + count)
605 *eof = 1;
606 *start = page + off;
607 len -= off;
608 if (len > count)
609 len = count;
610 if (len < 0)
611 len = 0;
612
613 return len;
614}
615
8d376cd6 616static int dispatch_procfs_write(struct file *file,
35ff8b9f 617 const char __user *userbuf,
8d376cd6 618 unsigned long count, void *data)
56b6aeb0
HMH		 619{
620 struct ibm_struct *ibm = data;
621 char *kernbuf;
622 int ret;
623
624 if (!ibm || !ibm->write)
625 return -EINVAL;
626
627 kernbuf = kmalloc(count + 2, GFP_KERNEL);
628 if (!kernbuf)
629 return -ENOMEM;
1da177e4 630
56b6aeb0
HMH		 631 if (copy_from_user(kernbuf, userbuf, count)) {
632 kfree(kernbuf);
633 return -EFAULT;
634 }
1da177e4 635
56b6aeb0
HMH		 636 kernbuf[count] = 0;
637 strcat(kernbuf, ",");
638 ret = ibm->write(kernbuf);
639 if (ret == 0)
640 ret = count;
1da177e4 641
56b6aeb0
HMH		 642 kfree(kernbuf);
643
644 return ret;
1da177e4
LT		 645}
646
647static char *next_cmd(char **cmds)
648{
649 char *start = *cmds;
650 char *end;
651
652 while ((end = strchr(start, ',')) && end == start)
653 start = end + 1;
654
655 if (!end)
656 return NULL;
657
658 *end = 0;
659 *cmds = end + 1;
660 return start;
661}
662
56b6aeb0 663
54ae1501
HMH		 664/****************************************************************************
665 ****************************************************************************
666 *
7f5d1cd6 667 * Device model: input, hwmon and platform
54ae1501
HMH		 668 *
669 ****************************************************************************
670 ****************************************************************************/
671
94954cc6 672static struct platform_device *tpacpi_pdev;
7fd40029 673static struct platform_device *tpacpi_sensors_pdev;
1beeffe4 674static struct device *tpacpi_hwmon;
7f5d1cd6 675static struct input_dev *tpacpi_inputdev;
8523ed6f 676static struct mutex tpacpi_inputdev_send_mutex;
b21a15f6 677static LIST_HEAD(tpacpi_all_drivers);
e295e850 678
083f1760
HMH		 679static int tpacpi_suspend_handler(struct platform_device *pdev,
680 pm_message_t state)
681{
682 struct ibm_struct *ibm, *itmp;
683
684 list_for_each_entry_safe(ibm, itmp,
685 &tpacpi_all_drivers,
686 all_drivers) {
687 if (ibm->suspend)
688 (ibm->suspend)(state);
689 }
690
691 return 0;
692}
693
e295e850
HMH		 694static int tpacpi_resume_handler(struct platform_device *pdev)
695{
696 struct ibm_struct *ibm, *itmp;
697
698 list_for_each_entry_safe(ibm, itmp,
699 &tpacpi_all_drivers,
700 all_drivers) {
701 if (ibm->resume)
702 (ibm->resume)();
703 }
704
705 return 0;
706}
707
54ae1501
HMH		 708static struct platform_driver tpacpi_pdriver = {
709 .driver = {
e0c7dfe7 710 .name = TPACPI_DRVR_NAME,
54ae1501
HMH		 711 .owner = THIS_MODULE,
712 },
083f1760 713 .suspend = tpacpi_suspend_handler,
e295e850 714 .resume = tpacpi_resume_handler,
54ae1501
HMH		 715};
716
7fd40029
HMH		 717static struct platform_driver tpacpi_hwmon_pdriver = {
718 .driver = {
e0c7dfe7 719 .name = TPACPI_HWMON_DRVR_NAME,
7fd40029
HMH		 720 .owner = THIS_MODULE,
721 },
722};
54ae1501 723
176750d6 724/*************************************************************************
b21a15f6 725 * sysfs support helpers
176750d6
HMH		 726 */
727
b21a15f6
HMH		 728struct attribute_set {
729 unsigned int members, max_members;
730 struct attribute_group group;
176750d6
HMH		 731};
732
7252374a
HMH		 733struct attribute_set_obj {
734 struct attribute_set s;
735 struct attribute *a;
736} __attribute__((packed));
737
738static struct attribute_set *create_attr_set(unsigned int max_members,
35ff8b9f 739 const char *name)
7252374a
HMH		 740{
741 struct attribute_set_obj *sobj;
742
743 if (max_members == 0)
744 return NULL;
745
746 /* Allocates space for implicit NULL at the end too */
747 sobj = kzalloc(sizeof(struct attribute_set_obj) +
748 max_members * sizeof(struct attribute *),
749 GFP_KERNEL);
750 if (!sobj)
751 return NULL;
752 sobj->s.max_members = max_members;
753 sobj->s.group.attrs = &sobj->a;
754 sobj->s.group.name = name;
755
756 return &sobj->s;
757}
758
f74a27d4
HMH		 759#define destroy_attr_set(_set) \
760 kfree(_set);
761
7252374a 762/* not multi-threaded safe, use it in a single thread per set */
35ff8b9f 763static int add_to_attr_set(struct attribute_set *s, struct attribute *attr)
7252374a
HMH		 764{
765 if (!s || !attr)
766 return -EINVAL;
767
768 if (s->members >= s->max_members)
769 return -ENOMEM;
770
771 s->group.attrs[s->members] = attr;
772 s->members++;
773
774 return 0;
775}
776
35ff8b9f 777static int add_many_to_attr_set(struct attribute_set *s,
7252374a
HMH		 778 struct attribute **attr,
779 unsigned int count)
780{
781 int i, res;
782
783 for (i = 0; i < count; i++) {
784 res = add_to_attr_set(s, attr[i]);
785 if (res)
786 return res;
787 }
788
789 return 0;
790}
791
35ff8b9f 792static void delete_attr_set(struct attribute_set *s, struct kobject *kobj)
7252374a
HMH		 793{
794 sysfs_remove_group(kobj, &s->group);
795 destroy_attr_set(s);
796}
797
f74a27d4
HMH		 798#define register_attr_set_with_sysfs(_attr_set, _kobj) \
799 sysfs_create_group(_kobj, &_attr_set->group)
800
7252374a
HMH		 801static int parse_strtoul(const char *buf,
802 unsigned long max, unsigned long *value)
803{
804 char *endp;
805
32afbf07
HMH		 806 while (*buf && isspace(*buf))
807 buf++;
7252374a
HMH		 808 *value = simple_strtoul(buf, &endp, 0);
809 while (*endp && isspace(*endp))
810 endp++;
811 if (*endp || *value > max)
812 return -EINVAL;
813
814 return 0;
815}
816
b5972796
HMH		 817static int __init tpacpi_query_bcl_levels(acpi_handle handle)
818{
819 struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
820 union acpi_object *obj;
821 int rc;
822
823 if (ACPI_SUCCESS(acpi_evaluate_object(handle, NULL, NULL, &buffer))) {
824 obj = (union acpi_object *)buffer.pointer;
825 if (!obj || (obj->type != ACPI_TYPE_PACKAGE)) {
826 printk(TPACPI_ERR "Unknown _BCL data, "
827 "please report this to %s\n", TPACPI_MAIL);
828 rc = 0;
829 } else {
830 rc = obj->package.count;
831 }
832 } else {
833 return 0;
834 }
835
836 kfree(buffer.pointer);
837 return rc;
838}
839
840static acpi_status __init tpacpi_acpi_walk_find_bcl(acpi_handle handle,
841 u32 lvl, void *context, void **rv)
842{
843 char name[ACPI_PATH_SEGMENT_LENGTH];
844 struct acpi_buffer buffer = { sizeof(name), &name };
845
846 if (ACPI_SUCCESS(acpi_get_name(handle, ACPI_SINGLE_NAME, &buffer)) &&
847 !strncmp("_BCL", name, sizeof(name) - 1)) {
848 BUG_ON(!rv || !*rv);
849 **(int **)rv = tpacpi_query_bcl_levels(handle);
850 return AE_CTRL_TERMINATE;
851 } else {
852 return AE_OK;
853 }
854}
855
856/*
857 * Returns 0 (no ACPI _BCL or _BCL invalid), or size of brightness map
858 */
859static int __init tpacpi_check_std_acpi_brightness_support(void)
860{
861 int status;
862 int bcl_levels = 0;
863 void *bcl_ptr = &bcl_levels;
864
865 if (!vid_handle) {
866 TPACPI_ACPIHANDLE_INIT(vid);
867 }
868 if (!vid_handle)
869 return 0;
870
871 /*
872 * Search for a _BCL method, and execute it. This is safe on all
873 * ThinkPads, and as a side-effect, _BCL will place a Lenovo Vista
874 * BIOS in ACPI backlight control mode. We do NOT have to care
875 * about calling the _BCL method in an enabled video device, any
876 * will do for our purposes.
877 */
878
879 status = acpi_walk_namespace(ACPI_TYPE_METHOD, vid_handle, 3,
880 tpacpi_acpi_walk_find_bcl, NULL,
881 &bcl_ptr);
882
883 if (ACPI_SUCCESS(status) && bcl_levels > 2) {
884 tp_features.bright_acpimode = 1;
885 return (bcl_levels - 2);
886 }
887
888 return 0;
889}
890
56b6aeb0 891/*************************************************************************
b21a15f6 892 * thinkpad-acpi driver attributes
56b6aeb0
HMH		 893 */
894
b21a15f6
HMH		 895/* interface_version --------------------------------------------------- */
896static ssize_t tpacpi_driver_interface_version_show(
897 struct device_driver *drv,
898 char *buf)
1da177e4 899{
b21a15f6
HMH		 900 return snprintf(buf, PAGE_SIZE, "0x%08x\n", TPACPI_SYSFS_VERSION);
901}
902
903static DRIVER_ATTR(interface_version, S_IRUGO,
904 tpacpi_driver_interface_version_show, NULL);
905
906/* debug_level --------------------------------------------------------- */
907static ssize_t tpacpi_driver_debug_show(struct device_driver *drv,
908 char *buf)
909{
910 return snprintf(buf, PAGE_SIZE, "0x%04x\n", dbg_level);
911}
912
913static ssize_t tpacpi_driver_debug_store(struct device_driver *drv,
914 const char *buf, size_t count)
915{
916 unsigned long t;
917
918 if (parse_strtoul(buf, 0xffff, &t))
919 return -EINVAL;
920
921 dbg_level = t;
922
923 return count;
924}
925
926static DRIVER_ATTR(debug_level, S_IWUSR | S_IRUGO,
927 tpacpi_driver_debug_show, tpacpi_driver_debug_store);
928
929/* version ------------------------------------------------------------- */
930static ssize_t tpacpi_driver_version_show(struct device_driver *drv,
931 char *buf)
932{
35ff8b9f
HMH		 933 return snprintf(buf, PAGE_SIZE, "%s v%s\n",
934 TPACPI_DESC, TPACPI_VERSION);
b21a15f6
HMH		 935}
936
937static DRIVER_ATTR(version, S_IRUGO,
938 tpacpi_driver_version_show, NULL);
939
940/* --------------------------------------------------------------------- */
941
35ff8b9f 942static struct driver_attribute *tpacpi_driver_attributes[] = {
b21a15f6
HMH		 943 &driver_attr_debug_level, &driver_attr_version,
944 &driver_attr_interface_version,
945};
946
947static int __init tpacpi_create_driver_attributes(struct device_driver *drv)
948{
949 int i, res;
950
951 i = 0;
952 res = 0;
953 while (!res && i < ARRAY_SIZE(tpacpi_driver_attributes)) {
954 res = driver_create_file(drv, tpacpi_driver_attributes[i]);
955 i++;
956 }
957
958 return res;
959}
960
961static void tpacpi_remove_driver_attributes(struct device_driver *drv)
962{
963 int i;
964
35ff8b9f 965 for (i = 0; i < ARRAY_SIZE(tpacpi_driver_attributes); i++)
b21a15f6
HMH		 966 driver_remove_file(drv, tpacpi_driver_attributes[i]);
967}
968
969/****************************************************************************
970 ****************************************************************************
971 *
972 * Subdrivers
973 *
974 ****************************************************************************
975 ****************************************************************************/
976
977/*************************************************************************
978 * thinkpad-acpi init subdriver
979 */
980
981static int __init thinkpad_acpi_driver_init(struct ibm_init_struct *iibm)
982{
e0c7dfe7
HMH		 983 printk(TPACPI_INFO "%s v%s\n", TPACPI_DESC, TPACPI_VERSION);
984 printk(TPACPI_INFO "%s\n", TPACPI_URL);
b21a15f6 985
e0c7dfe7 986 printk(TPACPI_INFO "ThinkPad BIOS %s, EC %s\n",
b21a15f6
HMH		 987 (thinkpad_id.bios_version_str) ?
988 thinkpad_id.bios_version_str : "unknown",
989 (thinkpad_id.ec_version_str) ?
990 thinkpad_id.ec_version_str : "unknown");
d5a2f2f1
HMH		 991
992 if (thinkpad_id.vendor && thinkpad_id.model_str)
8c74adbc 993 printk(TPACPI_INFO "%s %s, model %s\n",
d5a2f2f1
HMH		 994 (thinkpad_id.vendor == PCI_VENDOR_ID_IBM) ?
995 "IBM" : ((thinkpad_id.vendor ==
996 PCI_VENDOR_ID_LENOVO) ?
997 "Lenovo" : "Unknown vendor"),
8c74adbc
HMH		 998 thinkpad_id.model_str,
999 (thinkpad_id.nummodel_str) ?
1000 thinkpad_id.nummodel_str : "unknown");
3945ac36 1001
1da177e4
LT		 1002 return 0;
1003}
1004
643f12db 1005static int thinkpad_acpi_driver_read(char *p)
1da177e4
LT		 1006{
1007 int len = 0;
1008
e0c7dfe7
HMH		 1009 len += sprintf(p + len, "driver:\t\t%s\n", TPACPI_DESC);
1010 len += sprintf(p + len, "version:\t%s\n", TPACPI_VERSION);
1da177e4
LT		 1011
1012 return len;
1013}
1014
a5763f22
HMH		 1015static struct ibm_struct thinkpad_acpi_driver_data = {
1016 .name = "driver",
1017 .read = thinkpad_acpi_driver_read,
1018};
1019
56b6aeb0
HMH		 1020/*************************************************************************
1021 * Hotkey subdriver
1022 */
1023
f74a27d4
HMH		 1024enum { /* hot key scan codes (derived from ACPI DSDT) */
1025 TP_ACPI_HOTKEYSCAN_FNF1 = 0,
1026 TP_ACPI_HOTKEYSCAN_FNF2,
1027 TP_ACPI_HOTKEYSCAN_FNF3,
1028 TP_ACPI_HOTKEYSCAN_FNF4,
1029 TP_ACPI_HOTKEYSCAN_FNF5,
1030 TP_ACPI_HOTKEYSCAN_FNF6,
1031 TP_ACPI_HOTKEYSCAN_FNF7,
1032 TP_ACPI_HOTKEYSCAN_FNF8,
1033 TP_ACPI_HOTKEYSCAN_FNF9,
1034 TP_ACPI_HOTKEYSCAN_FNF10,
1035 TP_ACPI_HOTKEYSCAN_FNF11,
1036 TP_ACPI_HOTKEYSCAN_FNF12,
1037 TP_ACPI_HOTKEYSCAN_FNBACKSPACE,
1038 TP_ACPI_HOTKEYSCAN_FNINSERT,
1039 TP_ACPI_HOTKEYSCAN_FNDELETE,
1040 TP_ACPI_HOTKEYSCAN_FNHOME,
1041 TP_ACPI_HOTKEYSCAN_FNEND,
1042 TP_ACPI_HOTKEYSCAN_FNPAGEUP,
1043 TP_ACPI_HOTKEYSCAN_FNPAGEDOWN,
1044 TP_ACPI_HOTKEYSCAN_FNSPACE,
1045 TP_ACPI_HOTKEYSCAN_VOLUMEUP,
1046 TP_ACPI_HOTKEYSCAN_VOLUMEDOWN,
1047 TP_ACPI_HOTKEYSCAN_MUTE,
1048 TP_ACPI_HOTKEYSCAN_THINKPAD,
1049};
1050
01e88f25
HMH		 1051enum { /* Keys available through NVRAM polling */
1052 TPACPI_HKEY_NVRAM_KNOWN_MASK = 0x00fb88c0U,
1053 TPACPI_HKEY_NVRAM_GOOD_MASK = 0x00fb8000U,
1054};
1055
1056enum { /* Positions of some of the keys in hotkey masks */
1057 TP_ACPI_HKEY_DISPSWTCH_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNF7,
1058 TP_ACPI_HKEY_DISPXPAND_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNF8,
1059 TP_ACPI_HKEY_HIBERNATE_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNF12,
1060 TP_ACPI_HKEY_BRGHTUP_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNHOME,
1061 TP_ACPI_HKEY_BRGHTDWN_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNEND,
1062 TP_ACPI_HKEY_THNKLGHT_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNPAGEUP,
1063 TP_ACPI_HKEY_ZOOM_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNSPACE,
1064 TP_ACPI_HKEY_VOLUP_MASK = 1 << TP_ACPI_HOTKEYSCAN_VOLUMEUP,
1065 TP_ACPI_HKEY_VOLDWN_MASK = 1 << TP_ACPI_HOTKEYSCAN_VOLUMEDOWN,
1066 TP_ACPI_HKEY_MUTE_MASK = 1 << TP_ACPI_HOTKEYSCAN_MUTE,
1067 TP_ACPI_HKEY_THINKPAD_MASK = 1 << TP_ACPI_HOTKEYSCAN_THINKPAD,
1068};
1069
1070enum { /* NVRAM to ACPI HKEY group map */
1071 TP_NVRAM_HKEY_GROUP_HK2 = TP_ACPI_HKEY_THINKPAD_MASK |
1072 TP_ACPI_HKEY_ZOOM_MASK |
1073 TP_ACPI_HKEY_DISPSWTCH_MASK |
1074 TP_ACPI_HKEY_HIBERNATE_MASK,
1075 TP_NVRAM_HKEY_GROUP_BRIGHTNESS = TP_ACPI_HKEY_BRGHTUP_MASK |
1076 TP_ACPI_HKEY_BRGHTDWN_MASK,
1077 TP_NVRAM_HKEY_GROUP_VOLUME = TP_ACPI_HKEY_VOLUP_MASK |
1078 TP_ACPI_HKEY_VOLDWN_MASK |
1079 TP_ACPI_HKEY_MUTE_MASK,
1080};
1081
1082#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
1083struct tp_nvram_state {
1084 u16 thinkpad_toggle:1;
1085 u16 zoom_toggle:1;
1086 u16 display_toggle:1;
1087 u16 thinklight_toggle:1;
1088 u16 hibernate_toggle:1;
1089 u16 displayexp_toggle:1;
1090 u16 display_state:1;
1091 u16 brightness_toggle:1;
1092 u16 volume_toggle:1;
1093 u16 mute:1;
1094
1095 u8 brightness_level;
1096 u8 volume_level;
1097};
1098
1099static struct task_struct *tpacpi_hotkey_task;
1100static u32 hotkey_source_mask; /* bit mask 0=ACPI,1=NVRAM */
1101static int hotkey_poll_freq = 10; /* Hz */
1102static struct mutex hotkey_thread_mutex;
1103static struct mutex hotkey_thread_data_mutex;
1104static unsigned int hotkey_config_change;
1105
1106#else /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
1107
1108#define hotkey_source_mask 0U
1109
1110#endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
1111
f74a27d4
HMH		 1112static struct mutex hotkey_mutex;
1113
a713b4d7
HMH		 1114static enum { /* Reasons for waking up */
1115 TP_ACPI_WAKEUP_NONE = 0, /* None or unknown */
1116 TP_ACPI_WAKEUP_BAYEJ, /* Bay ejection request */
1117 TP_ACPI_WAKEUP_UNDOCK, /* Undock request */
1118} hotkey_wakeup_reason;
1119
1120static int hotkey_autosleep_ack;
1121
78f81cc4 1122static int hotkey_orig_status;
ae92bd17 1123static u32 hotkey_orig_mask;
9b010de5 1124static u32 hotkey_all_mask;
6a38abbf 1125static u32 hotkey_reserved_mask;
b2c985e7 1126static u32 hotkey_mask;
6a38abbf 1127
b21a15f6
HMH		 1128static unsigned int hotkey_report_mode;
1129
edf0e0e5 1130static u16 *hotkey_keycode_map;
78f81cc4 1131
94954cc6 1132static struct attribute_set *hotkey_dev_attributes;
a0416420 1133
01e88f25
HMH		 1134#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
1135#define HOTKEY_CONFIG_CRITICAL_START \
35ff8b9f
HMH		 1136 do { \
1137 mutex_lock(&hotkey_thread_data_mutex); \
1138 hotkey_config_change++; \
1139 } while (0);
01e88f25
HMH		 1140#define HOTKEY_CONFIG_CRITICAL_END \
1141 mutex_unlock(&hotkey_thread_data_mutex);
1142#else
1143#define HOTKEY_CONFIG_CRITICAL_START
1144#define HOTKEY_CONFIG_CRITICAL_END
1145#endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
1146
6c231bd5
HMH		 1147/* HKEY.MHKG() return bits */
1148#define TP_HOTKEY_TABLET_MASK (1 << 3)
1149
74941a69
HMH		 1150static int hotkey_get_wlsw(int *status)
1151{
1152 if (!acpi_evalf(hkey_handle, status, "WLSW", "d"))
1153 return -EIO;
1154 return 0;
1155}
1156
6c231bd5
HMH		 1157static int hotkey_get_tablet_mode(int *status)
1158{
1159 int s;
1160
1161 if (!acpi_evalf(hkey_handle, &s, "MHKG", "d"))
1162 return -EIO;
1163
cee47f5a
HMH		 1164 *status = ((s & TP_HOTKEY_TABLET_MASK) != 0);
1165 return 0;
6c231bd5
HMH		 1166}
1167
b2c985e7
HMH		 1168/*
1169 * Call with hotkey_mutex held
1170 */
1171static int hotkey_mask_get(void)
1172{
01e88f25
HMH		 1173 u32 m = 0;
1174
b2c985e7 1175 if (tp_features.hotkey_mask) {
01e88f25 1176 if (!acpi_evalf(hkey_handle, &m, "DHKN", "d"))
b2c985e7
HMH		 1177 return -EIO;
1178 }
01e88f25 1179 hotkey_mask = m | (hotkey_source_mask & hotkey_mask);
b2c985e7
HMH		 1180
1181 return 0;
1182}
1183
1184/*
1185 * Call with hotkey_mutex held
1186 */
1187static int hotkey_mask_set(u32 mask)
1188{
1189 int i;
1190 int rc = 0;
1191
1192 if (tp_features.hotkey_mask) {
92889022
HMH		 1193 if (!tp_warned.hotkey_mask_ff &&
1194 (mask == 0xffff || mask == 0xffffff ||
1195 mask == 0xffffffff)) {
1196 tp_warned.hotkey_mask_ff = 1;
1197 printk(TPACPI_NOTICE
1198 "setting the hotkey mask to 0x%08x is likely "
1199 "not the best way to go about it\n", mask);
1200 printk(TPACPI_NOTICE
1201 "please consider using the driver defaults, "
1202 "and refer to up-to-date thinkpad-acpi "
1203 "documentation\n");
1204 }
1205
01e88f25 1206 HOTKEY_CONFIG_CRITICAL_START
b2c985e7
HMH		 1207 for (i = 0; i < 32; i++) {
1208 u32 m = 1 << i;
01e88f25
HMH		 1209 /* enable in firmware mask only keys not in NVRAM
1210 * mode, but enable the key in the cached hotkey_mask
1211 * regardless of mode, or the key will end up
1212 * disabled by hotkey_mask_get() */
b2c985e7
HMH		 1213 if (!acpi_evalf(hkey_handle,
1214 NULL, "MHKM", "vdd", i + 1,
01e88f25 1215 !!((mask & ~hotkey_source_mask) & m))) {
b2c985e7
HMH		 1216 rc = -EIO;
1217 break;
1218 } else {
1219 hotkey_mask = (hotkey_mask & ~m) | (mask & m);
1220 }
1221 }
01e88f25 1222 HOTKEY_CONFIG_CRITICAL_END
b2c985e7
HMH		 1223
1224 /* hotkey_mask_get must be called unconditionally below */
01e88f25
HMH		 1225 if (!hotkey_mask_get() && !rc &&
1226 (hotkey_mask & ~hotkey_source_mask) !=
1227 (mask & ~hotkey_source_mask)) {
e0c7dfe7 1228 printk(TPACPI_NOTICE
b2c985e7
HMH		 1229 "requested hot key mask 0x%08x, but "
1230 "firmware forced it to 0x%08x\n",
1231 mask, hotkey_mask);
1232 }
01e88f25
HMH		 1233 } else {
1234#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
1235 HOTKEY_CONFIG_CRITICAL_START
1236 hotkey_mask = mask & hotkey_source_mask;
1237 HOTKEY_CONFIG_CRITICAL_END
1238 hotkey_mask_get();
1239 if (hotkey_mask != mask) {
e0c7dfe7 1240 printk(TPACPI_NOTICE
01e88f25
HMH		 1241 "requested hot key mask 0x%08x, "
1242 "forced to 0x%08x (NVRAM poll mask is "
1243 "0x%08x): no firmware mask support\n",
1244 mask, hotkey_mask, hotkey_source_mask);
1245 }
1246#else
1247 hotkey_mask_get();
1248 rc = -ENXIO;
1249#endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
b2c985e7
HMH		 1250 }
1251
1252 return rc;
1253}
1254
1255static int hotkey_status_get(int *status)
1256{
1257 if (!acpi_evalf(hkey_handle, status, "DHKC", "d"))
1258 return -EIO;
1259
1260 return 0;
1261}
1262
1263static int hotkey_status_set(int status)
1264{
1265 if (!acpi_evalf(hkey_handle, NULL, "MHKC", "vd", status))
1266 return -EIO;
1267
1268 return 0;
1269}
1270
b7c8c200
HMH		 1271static void tpacpi_input_send_radiosw(void)
1272{
1273 int wlsw;
1274
b7c8c200 1275 if (tp_features.hotkey_wlsw && !hotkey_get_wlsw(&wlsw)) {
d147da73
HMH		 1276 mutex_lock(&tpacpi_inputdev_send_mutex);
1277
b7c8c200
HMH		 1278 input_report_switch(tpacpi_inputdev,
1279 SW_RADIO, !!wlsw);
1280 input_sync(tpacpi_inputdev);
b7c8c200 1281
d147da73
HMH		 1282 mutex_unlock(&tpacpi_inputdev_send_mutex);
1283 }
b7c8c200
HMH		 1284}
1285
6c231bd5 1286static void tpacpi_input_send_tabletsw(void)
b3ec6f91 1287{
6c231bd5 1288 int state;
b3ec6f91 1289
6c231bd5
HMH		 1290 if (tp_features.hotkey_tablet &&
1291 !hotkey_get_tablet_mode(&state)) {
1292 mutex_lock(&tpacpi_inputdev_send_mutex);
b3ec6f91 1293
6c231bd5
HMH		 1294 input_report_switch(tpacpi_inputdev,
1295 SW_TABLET_MODE, !!state);
1296 input_sync(tpacpi_inputdev);
1297
1298 mutex_unlock(&tpacpi_inputdev_send_mutex);
1299 }
b3ec6f91
HMH		 1300}
1301
b7c8c200
HMH		 1302static void tpacpi_input_send_key(unsigned int scancode)
1303{
1304 unsigned int keycode;
1305
1306 keycode = hotkey_keycode_map[scancode];
1307
1308 if (keycode != KEY_RESERVED) {
1309 mutex_lock(&tpacpi_inputdev_send_mutex);
1310
1311 input_report_key(tpacpi_inputdev, keycode, 1);
1312 if (keycode == KEY_UNKNOWN)
1313 input_event(tpacpi_inputdev, EV_MSC, MSC_SCAN,
1314 scancode);
1315 input_sync(tpacpi_inputdev);
1316
1317 input_report_key(tpacpi_inputdev, keycode, 0);
1318 if (keycode == KEY_UNKNOWN)
1319 input_event(tpacpi_inputdev, EV_MSC, MSC_SCAN,
1320 scancode);
1321 input_sync(tpacpi_inputdev);
1322
1323 mutex_unlock(&tpacpi_inputdev_send_mutex);
1324 }
1325}
1326
01e88f25
HMH		 1327#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
1328static struct tp_acpi_drv_struct ibm_hotkey_acpidriver;
1329
1330static void tpacpi_hotkey_send_key(unsigned int scancode)
1331{
1332 tpacpi_input_send_key(scancode);
1333 if (hotkey_report_mode < 2) {
1334 acpi_bus_generate_proc_event(ibm_hotkey_acpidriver.device,
1335 0x80, 0x1001 + scancode);
1336 }
1337}
1338
1339static void hotkey_read_nvram(struct tp_nvram_state *n, u32 m)
1340{
1341 u8 d;
1342
1343 if (m & TP_NVRAM_HKEY_GROUP_HK2) {
1344 d = nvram_read_byte(TP_NVRAM_ADDR_HK2);
1345 n->thinkpad_toggle = !!(d & TP_NVRAM_MASK_HKT_THINKPAD);
1346 n->zoom_toggle = !!(d & TP_NVRAM_MASK_HKT_ZOOM);
1347 n->display_toggle = !!(d & TP_NVRAM_MASK_HKT_DISPLAY);
1348 n->hibernate_toggle = !!(d & TP_NVRAM_MASK_HKT_HIBERNATE);
1349 }
1350 if (m & TP_ACPI_HKEY_THNKLGHT_MASK) {
1351 d = nvram_read_byte(TP_NVRAM_ADDR_THINKLIGHT);
1352 n->thinklight_toggle = !!(d & TP_NVRAM_MASK_THINKLIGHT);
1353 }
1354 if (m & TP_ACPI_HKEY_DISPXPAND_MASK) {
1355 d = nvram_read_byte(TP_NVRAM_ADDR_VIDEO);
1356 n->displayexp_toggle =
1357 !!(d & TP_NVRAM_MASK_HKT_DISPEXPND);
1358 }
1359 if (m & TP_NVRAM_HKEY_GROUP_BRIGHTNESS) {
1360 d = nvram_read_byte(TP_NVRAM_ADDR_BRIGHTNESS);
1361 n->brightness_level = (d & TP_NVRAM_MASK_LEVEL_BRIGHTNESS)
1362 >> TP_NVRAM_POS_LEVEL_BRIGHTNESS;
1363 n->brightness_toggle =
1364 !!(d & TP_NVRAM_MASK_HKT_BRIGHTNESS);
1365 }
1366 if (m & TP_NVRAM_HKEY_GROUP_VOLUME) {
1367 d = nvram_read_byte(TP_NVRAM_ADDR_MIXER);
1368 n->volume_level = (d & TP_NVRAM_MASK_LEVEL_VOLUME)
1369 >> TP_NVRAM_POS_LEVEL_VOLUME;
1370 n->mute = !!(d & TP_NVRAM_MASK_MUTE);
1371 n->volume_toggle = !!(d & TP_NVRAM_MASK_HKT_VOLUME);
1372 }
1373}
1374
1375#define TPACPI_COMPARE_KEY(__scancode, __member) \
35ff8b9f
HMH		 1376 do { \
1377 if ((mask & (1 << __scancode)) && \
1378 oldn->__member != newn->__member) \
1379 tpacpi_hotkey_send_key(__scancode); \
1380 } while (0)
01e88f25
HMH		 1381
1382#define TPACPI_MAY_SEND_KEY(__scancode) \
1383 do { if (mask & (1 << __scancode)) \
1384 tpacpi_hotkey_send_key(__scancode); } while (0)
1385
1386static void hotkey_compare_and_issue_event(struct tp_nvram_state *oldn,
35ff8b9f 1387 struct tp_nvram_state *newn,
01e88f25
HMH		 1388 u32 mask)
1389{
1390 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_THINKPAD, thinkpad_toggle);
1391 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNSPACE, zoom_toggle);
1392 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNF7, display_toggle);
1393 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNF12, hibernate_toggle);
1394
1395 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNPAGEUP, thinklight_toggle);
1396
1397 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNF8, displayexp_toggle);
1398
1399 /* handle volume */
1400 if (oldn->volume_toggle != newn->volume_toggle) {
1401 if (oldn->mute != newn->mute) {
1402 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_MUTE);
1403 }
1404 if (oldn->volume_level > newn->volume_level) {
1405 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEDOWN);
1406 } else if (oldn->volume_level < newn->volume_level) {
1407 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEUP);
1408 } else if (oldn->mute == newn->mute) {
1409 /* repeated key presses that didn't change state */
1410 if (newn->mute) {
1411 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_MUTE);
1412 } else if (newn->volume_level != 0) {
1413 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEUP);
1414 } else {
1415 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEDOWN);
1416 }
1417 }
1418 }
1419
1420 /* handle brightness */
1421 if (oldn->brightness_toggle != newn->brightness_toggle) {
1422 if (oldn->brightness_level < newn->brightness_level) {
1423 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNHOME);
1424 } else if (oldn->brightness_level > newn->brightness_level) {
1425 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNEND);
1426 } else {
1427 /* repeated key presses that didn't change state */
1428 if (newn->brightness_level != 0) {
1429 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNHOME);
1430 } else {
1431 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNEND);
1432 }
1433 }
1434 }
1435}
1436
1437#undef TPACPI_COMPARE_KEY
1438#undef TPACPI_MAY_SEND_KEY
1439
1440static int hotkey_kthread(void *data)
1441{
1442 struct tp_nvram_state s[2];
1443 u32 mask;
1444 unsigned int si, so;
1445 unsigned long t;
1446 unsigned int change_detector, must_reset;
1447
1448 mutex_lock(&hotkey_thread_mutex);
1449
1450 if (tpacpi_lifecycle == TPACPI_LIFE_EXITING)
1451 goto exit;
1452
1453 set_freezable();
1454
1455 so = 0;
1456 si = 1;
1457 t = 0;
1458
1459 /* Initial state for compares */
1460 mutex_lock(&hotkey_thread_data_mutex);
1461 change_detector = hotkey_config_change;
1462 mask = hotkey_source_mask & hotkey_mask;
1463 mutex_unlock(&hotkey_thread_data_mutex);
1464 hotkey_read_nvram(&s[so], mask);
1465
1466 while (!kthread_should_stop() && hotkey_poll_freq) {
1467 if (t == 0)
1468 t = 1000/hotkey_poll_freq;
1469 t = msleep_interruptible(t);
1470 if (unlikely(kthread_should_stop()))
1471 break;
1472 must_reset = try_to_freeze();
1473 if (t > 0 && !must_reset)
1474 continue;
1475
1476 mutex_lock(&hotkey_thread_data_mutex);
1477 if (must_reset || hotkey_config_change != change_detector) {
1478 /* forget old state on thaw or config change */
1479 si = so;
1480 t = 0;
1481 change_detector = hotkey_config_change;
1482 }
1483 mask = hotkey_source_mask & hotkey_mask;
1484 mutex_unlock(&hotkey_thread_data_mutex);
1485
1486 if (likely(mask)) {
1487 hotkey_read_nvram(&s[si], mask);
1488 if (likely(si != so)) {
1489 hotkey_compare_and_issue_event(&s[so], &s[si],
35ff8b9f 1490 mask);
01e88f25
HMH		 1491 }
1492 }
1493
1494 so = si;
1495 si ^= 1;
1496 }
1497
1498exit:
1499 mutex_unlock(&hotkey_thread_mutex);
1500 return 0;
1501}
1502
1503static void hotkey_poll_stop_sync(void)
1504{
1505 if (tpacpi_hotkey_task) {
1506 if (frozen(tpacpi_hotkey_task) ||
1507 freezing(tpacpi_hotkey_task))
1508 thaw_process(tpacpi_hotkey_task);
1509
1510 kthread_stop(tpacpi_hotkey_task);
1511 tpacpi_hotkey_task = NULL;
1512 mutex_lock(&hotkey_thread_mutex);
1513 /* at this point, the thread did exit */
1514 mutex_unlock(&hotkey_thread_mutex);
1515 }
1516}
1517
1518/* call with hotkey_mutex held */
1519static void hotkey_poll_setup(int may_warn)
1520{
1521 if ((hotkey_source_mask & hotkey_mask) != 0 &&
1522 hotkey_poll_freq > 0 &&
1523 (tpacpi_inputdev->users > 0 || hotkey_report_mode < 2)) {
1524 if (!tpacpi_hotkey_task) {
1525 tpacpi_hotkey_task = kthread_run(hotkey_kthread,
35ff8b9f
HMH		 1526 NULL,
1527 TPACPI_FILE "d");
01e88f25
HMH		 1528 if (IS_ERR(tpacpi_hotkey_task)) {
1529 tpacpi_hotkey_task = NULL;
35ff8b9f
HMH		 1530 printk(TPACPI_ERR
1531 "could not create kernel thread "
01e88f25
HMH		 1532 "for hotkey polling\n");
1533 }
1534 }
1535 } else {
1536 hotkey_poll_stop_sync();
1537 if (may_warn &&
1538 hotkey_source_mask != 0 && hotkey_poll_freq == 0) {
35ff8b9f
HMH		 1539 printk(TPACPI_NOTICE
1540 "hot keys 0x%08x require polling, "
01e88f25
HMH		 1541 "which is currently disabled\n",
1542 hotkey_source_mask);
1543 }
1544 }
1545}
1546
1547static void hotkey_poll_setup_safe(int may_warn)
1548{
1549 mutex_lock(&hotkey_mutex);
1550 hotkey_poll_setup(may_warn);
1551 mutex_unlock(&hotkey_mutex);
1552}
1553
1bc6b9cd
HMH		 1554#else /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
1555
1556static void hotkey_poll_setup_safe(int __unused)
1557{
1558}
1559
1560#endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
1561
01e88f25
HMH		 1562static int hotkey_inputdev_open(struct input_dev *dev)
1563{
1564 switch (tpacpi_lifecycle) {
1565 case TPACPI_LIFE_INIT:
1566 /*
1567 * hotkey_init will call hotkey_poll_setup_safe
1568 * at the appropriate moment
1569 */
1570 return 0;
1571 case TPACPI_LIFE_EXITING:
1572 return -EBUSY;
1573 case TPACPI_LIFE_RUNNING:
1574 hotkey_poll_setup_safe(0);
1575 return 0;
1576 }
1577
1578 /* Should only happen if tpacpi_lifecycle is corrupt */
1579 BUG();
1580 return -EBUSY;
1581}
1582
1583static void hotkey_inputdev_close(struct input_dev *dev)
1584{
1585 /* disable hotkey polling when possible */
1586 if (tpacpi_lifecycle == TPACPI_LIFE_RUNNING)
1587 hotkey_poll_setup_safe(0);
1588}
01e88f25 1589
a0416420
HMH		 1590/* sysfs hotkey enable ------------------------------------------------- */
1591static ssize_t hotkey_enable_show(struct device *dev,
1592 struct device_attribute *attr,
1593 char *buf)
1594{
ae92bd17 1595 int res, status;
a0416420 1596
b2c985e7 1597 res = hotkey_status_get(&status);
a0416420
HMH		 1598 if (res)
1599 return res;
1600
1601 return snprintf(buf, PAGE_SIZE, "%d\n", status);
1602}
1603
1604static ssize_t hotkey_enable_store(struct device *dev,
1605 struct device_attribute *attr,
1606 const char *buf, size_t count)
1607{
1608 unsigned long t;
b2c985e7 1609 int res;
a0416420
HMH		 1610
1611 if (parse_strtoul(buf, 1, &t))
1612 return -EINVAL;
1613
b2c985e7 1614 res = hotkey_status_set(t);
a0416420
HMH		 1615
1616 return (res) ? res : count;
1617}
1618
1619static struct device_attribute dev_attr_hotkey_enable =
cc4c24e1 1620 __ATTR(hotkey_enable, S_IWUSR | S_IRUGO,
a0416420
HMH		 1621 hotkey_enable_show, hotkey_enable_store);
1622
1623/* sysfs hotkey mask --------------------------------------------------- */
1624static ssize_t hotkey_mask_show(struct device *dev,
1625 struct device_attribute *attr,
1626 char *buf)
1627{
b2c985e7 1628 int res;
a0416420 1629
b2c985e7
HMH		 1630 if (mutex_lock_interruptible(&hotkey_mutex))
1631 return -ERESTARTSYS;
1632 res = hotkey_mask_get();
1633 mutex_unlock(&hotkey_mutex);
a0416420 1634
b2c985e7
HMH		 1635 return (res)?
1636 res : snprintf(buf, PAGE_SIZE, "0x%08x\n", hotkey_mask);
a0416420
HMH		 1637}
1638
1639static ssize_t hotkey_mask_store(struct device *dev,
1640 struct device_attribute *attr,
1641 const char *buf, size_t count)
1642{
1643 unsigned long t;
b2c985e7 1644 int res;
a0416420 1645
ae92bd17 1646 if (parse_strtoul(buf, 0xffffffffUL, &t))
a0416420
HMH		 1647 return -EINVAL;
1648
b2c985e7
HMH		 1649 if (mutex_lock_interruptible(&hotkey_mutex))
1650 return -ERESTARTSYS;
1651
1652 res = hotkey_mask_set(t);
01e88f25
HMH		 1653
1654#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
1655 hotkey_poll_setup(1);
1656#endif
1657
b2c985e7 1658 mutex_unlock(&hotkey_mutex);
a0416420
HMH		 1659
1660 return (res) ? res : count;
1661}
1662
1663static struct device_attribute dev_attr_hotkey_mask =
cc4c24e1 1664 __ATTR(hotkey_mask, S_IWUSR | S_IRUGO,
a0416420
HMH		 1665 hotkey_mask_show, hotkey_mask_store);
1666
1667/* sysfs hotkey bios_enabled ------------------------------------------- */
1668static ssize_t hotkey_bios_enabled_show(struct device *dev,
1669 struct device_attribute *attr,
1670 char *buf)
1671{
1672 return snprintf(buf, PAGE_SIZE, "%d\n", hotkey_orig_status);
1673}
1674
1675static struct device_attribute dev_attr_hotkey_bios_enabled =
cc4c24e1 1676 __ATTR(hotkey_bios_enabled, S_IRUGO, hotkey_bios_enabled_show, NULL);
a0416420
HMH		 1677
1678/* sysfs hotkey bios_mask ---------------------------------------------- */
1679static ssize_t hotkey_bios_mask_show(struct device *dev,
1680 struct device_attribute *attr,
1681 char *buf)
1682{
ae92bd17 1683 return snprintf(buf, PAGE_SIZE, "0x%08x\n", hotkey_orig_mask);
a0416420
HMH		 1684}
1685
1686static struct device_attribute dev_attr_hotkey_bios_mask =
cc4c24e1 1687 __ATTR(hotkey_bios_mask, S_IRUGO, hotkey_bios_mask_show, NULL);
a0416420 1688
9b010de5
HMH		 1689/* sysfs hotkey all_mask ----------------------------------------------- */
1690static ssize_t hotkey_all_mask_show(struct device *dev,
1691 struct device_attribute *attr,
1692 char *buf)
1693{
01e88f25
HMH		 1694 return snprintf(buf, PAGE_SIZE, "0x%08x\n",
1695 hotkey_all_mask | hotkey_source_mask);
9b010de5
HMH		 1696}
1697
1698static struct device_attribute dev_attr_hotkey_all_mask =
1699 __ATTR(hotkey_all_mask, S_IRUGO, hotkey_all_mask_show, NULL);
1700
1701/* sysfs hotkey recommended_mask --------------------------------------- */
1702static ssize_t hotkey_recommended_mask_show(struct device *dev,
1703 struct device_attribute *attr,
1704 char *buf)
1705{
1706 return snprintf(buf, PAGE_SIZE, "0x%08x\n",
01e88f25
HMH		 1707 (hotkey_all_mask | hotkey_source_mask)
1708 & ~hotkey_reserved_mask);
9b010de5
HMH		 1709}
1710
1711static struct device_attribute dev_attr_hotkey_recommended_mask =
1712 __ATTR(hotkey_recommended_mask, S_IRUGO,
1713 hotkey_recommended_mask_show, NULL);
1714
01e88f25
HMH		 1715#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
1716
1717/* sysfs hotkey hotkey_source_mask ------------------------------------- */
1718static ssize_t hotkey_source_mask_show(struct device *dev,
1719 struct device_attribute *attr,
1720 char *buf)
1721{
1722 return snprintf(buf, PAGE_SIZE, "0x%08x\n", hotkey_source_mask);
1723}
1724
1725static ssize_t hotkey_source_mask_store(struct device *dev,
1726 struct device_attribute *attr,
1727 const char *buf, size_t count)
1728{
1729 unsigned long t;
1730
1731 if (parse_strtoul(buf, 0xffffffffUL, &t) ||
1732 ((t & ~TPACPI_HKEY_NVRAM_KNOWN_MASK) != 0))
1733 return -EINVAL;
1734
1735 if (mutex_lock_interruptible(&hotkey_mutex))
1736 return -ERESTARTSYS;
1737
1738 HOTKEY_CONFIG_CRITICAL_START
1739 hotkey_source_mask = t;
1740 HOTKEY_CONFIG_CRITICAL_END
1741
1742 hotkey_poll_setup(1);
1743
1744 mutex_unlock(&hotkey_mutex);
1745
1746 return count;
1747}
1748
1749static struct device_attribute dev_attr_hotkey_source_mask =
1750 __ATTR(hotkey_source_mask, S_IWUSR | S_IRUGO,
1751 hotkey_source_mask_show, hotkey_source_mask_store);
1752
1753/* sysfs hotkey hotkey_poll_freq --------------------------------------- */
1754static ssize_t hotkey_poll_freq_show(struct device *dev,
1755 struct device_attribute *attr,
1756 char *buf)
1757{
1758 return snprintf(buf, PAGE_SIZE, "%d\n", hotkey_poll_freq);
1759}
1760
1761static ssize_t hotkey_poll_freq_store(struct device *dev,
1762 struct device_attribute *attr,
1763 const char *buf, size_t count)
1764{
1765 unsigned long t;
1766
1767 if (parse_strtoul(buf, 25, &t))
1768 return -EINVAL;
1769
1770 if (mutex_lock_interruptible(&hotkey_mutex))
1771 return -ERESTARTSYS;
1772
1773 hotkey_poll_freq = t;
1774
1775 hotkey_poll_setup(1);
1776 mutex_unlock(&hotkey_mutex);
1777
1778 return count;
1779}
1780
1781static struct device_attribute dev_attr_hotkey_poll_freq =
1782 __ATTR(hotkey_poll_freq, S_IWUSR | S_IRUGO,
1783 hotkey_poll_freq_show, hotkey_poll_freq_store);
1784
1785#endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
1786
50ebec09 1787/* sysfs hotkey radio_sw (pollable) ------------------------------------ */
74941a69
HMH		 1788static ssize_t hotkey_radio_sw_show(struct device *dev,
1789 struct device_attribute *attr,
1790 char *buf)
1791{
1792 int res, s;
1793 res = hotkey_get_wlsw(&s);
1794 if (res < 0)
1795 return res;
1796
1797 return snprintf(buf, PAGE_SIZE, "%d\n", !!s);
1798}
1799
1800static struct device_attribute dev_attr_hotkey_radio_sw =
1801 __ATTR(hotkey_radio_sw, S_IRUGO, hotkey_radio_sw_show, NULL);
1802
50ebec09
HMH		 1803static void hotkey_radio_sw_notify_change(void)
1804{
1805 if (tp_features.hotkey_wlsw)
1806 sysfs_notify(&tpacpi_pdev->dev.kobj, NULL,
1807 "hotkey_radio_sw");
1808}
1809
6c231bd5
HMH		 1810/* sysfs hotkey tablet mode (pollable) --------------------------------- */
1811static ssize_t hotkey_tablet_mode_show(struct device *dev,
1812 struct device_attribute *attr,
1813 char *buf)
1814{
1815 int res, s;
1816 res = hotkey_get_tablet_mode(&s);
1817 if (res < 0)
1818 return res;
1819
1820 return snprintf(buf, PAGE_SIZE, "%d\n", !!s);
1821}
1822
1823static struct device_attribute dev_attr_hotkey_tablet_mode =
1824 __ATTR(hotkey_tablet_mode, S_IRUGO, hotkey_tablet_mode_show, NULL);
1825
1826static void hotkey_tablet_mode_notify_change(void)
1827{
1828 if (tp_features.hotkey_tablet)
1829 sysfs_notify(&tpacpi_pdev->dev.kobj, NULL,
1830 "hotkey_tablet_mode");
1831}
1832
ff80f137
HMH		 1833/* sysfs hotkey report_mode -------------------------------------------- */
1834static ssize_t hotkey_report_mode_show(struct device *dev,
1835 struct device_attribute *attr,
1836 char *buf)
1837{
1838 return snprintf(buf, PAGE_SIZE, "%d\n",
1839 (hotkey_report_mode != 0) ? hotkey_report_mode : 1);
1840}
1841
1842static struct device_attribute dev_attr_hotkey_report_mode =
1843 __ATTR(hotkey_report_mode, S_IRUGO, hotkey_report_mode_show, NULL);
1844
50ebec09 1845/* sysfs wakeup reason (pollable) -------------------------------------- */
a713b4d7
HMH		 1846static ssize_t hotkey_wakeup_reason_show(struct device *dev,
1847 struct device_attribute *attr,
1848 char *buf)
1849{
1850 return snprintf(buf, PAGE_SIZE, "%d\n", hotkey_wakeup_reason);
1851}
1852
1853static struct device_attribute dev_attr_hotkey_wakeup_reason =
1854 __ATTR(wakeup_reason, S_IRUGO, hotkey_wakeup_reason_show, NULL);
1855
1d5a2b54 1856static void hotkey_wakeup_reason_notify_change(void)
50ebec09
HMH		 1857{
1858 if (tp_features.hotkey_mask)
1859 sysfs_notify(&tpacpi_pdev->dev.kobj, NULL,
1860 "wakeup_reason");
1861}
1862
1863/* sysfs wakeup hotunplug_complete (pollable) -------------------------- */
a713b4d7
HMH		 1864static ssize_t hotkey_wakeup_hotunplug_complete_show(struct device *dev,
1865 struct device_attribute *attr,
1866 char *buf)
1867{
1868 return snprintf(buf, PAGE_SIZE, "%d\n", hotkey_autosleep_ack);
1869}
1870
1871static struct device_attribute dev_attr_hotkey_wakeup_hotunplug_complete =
1872 __ATTR(wakeup_hotunplug_complete, S_IRUGO,
1873 hotkey_wakeup_hotunplug_complete_show, NULL);
1874
1d5a2b54 1875static void hotkey_wakeup_hotunplug_complete_notify_change(void)
50ebec09
HMH		 1876{
1877 if (tp_features.hotkey_mask)
1878 sysfs_notify(&tpacpi_pdev->dev.kobj, NULL,
1879 "wakeup_hotunplug_complete");
1880}
1881
a0416420
HMH		 1882/* --------------------------------------------------------------------- */
1883
ff80f137
HMH		 1884static struct attribute *hotkey_attributes[] __initdata = {
1885 &dev_attr_hotkey_enable.attr,
01e88f25 1886 &dev_attr_hotkey_bios_enabled.attr,
ff80f137 1887 &dev_attr_hotkey_report_mode.attr,
01e88f25
HMH		 1888#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
1889 &dev_attr_hotkey_mask.attr,
1890 &dev_attr_hotkey_all_mask.attr,
1891 &dev_attr_hotkey_recommended_mask.attr,
1892 &dev_attr_hotkey_source_mask.attr,
1893 &dev_attr_hotkey_poll_freq.attr,
1894#endif
ff80f137
HMH		 1895};
1896
1897static struct attribute *hotkey_mask_attributes[] __initdata = {
a0416420 1898 &dev_attr_hotkey_bios_mask.attr,
01e88f25
HMH		 1899#ifndef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
1900 &dev_attr_hotkey_mask.attr,
9b010de5
HMH		 1901 &dev_attr_hotkey_all_mask.attr,
1902 &dev_attr_hotkey_recommended_mask.attr,
01e88f25 1903#endif
a713b4d7
HMH		 1904 &dev_attr_hotkey_wakeup_reason.attr,
1905 &dev_attr_hotkey_wakeup_hotunplug_complete.attr,
a0416420
HMH		 1906};
1907
a5763f22 1908static int __init hotkey_init(struct ibm_init_struct *iibm)
56b6aeb0 1909{
0f089147
HMH		 1910 /* Requirements for changing the default keymaps:
1911 *
1912 * 1. Many of the keys are mapped to KEY_RESERVED for very
1913 * good reasons. Do not change them unless you have deep
1914 * knowledge on the IBM and Lenovo ThinkPad firmware for
1915 * the various ThinkPad models. The driver behaves
1916 * differently for KEY_RESERVED: such keys have their
1917 * hot key mask *unset* in mask_recommended, and also
1918 * in the initial hot key mask programmed into the
1919 * firmware at driver load time, which means the firm-
1920 * ware may react very differently if you change them to
1921 * something else;
1922 *
1923 * 2. You must be subscribed to the linux-thinkpad and
1924 * ibm-acpi-devel mailing lists, and you should read the
1925 * list archives since 2007 if you want to change the
1926 * keymaps. This requirement exists so that you will
1927 * know the past history of problems with the thinkpad-
1928 * acpi driver keymaps, and also that you will be
1929 * listening to any bug reports;
1930 *
1931 * 3. Do not send thinkpad-acpi specific patches directly to
1932 * for merging, *ever*. Send them to the linux-acpi
1933 * mailinglist for comments. Merging is to be done only
1934 * through acpi-test and the ACPI maintainer.
1935 *
1936 * If the above is too much to ask, don't change the keymap.
1937 * Ask the thinkpad-acpi maintainer to do it, instead.
1938 */
edf0e0e5
HMH		 1939 static u16 ibm_keycode_map[] __initdata = {
1940 /* Scan Codes 0x00 to 0x0B: ACPI HKEY FN+F1..F12 */
1941 KEY_FN_F1, KEY_FN_F2, KEY_COFFEE, KEY_SLEEP,
1942 KEY_WLAN, KEY_FN_F6, KEY_SWITCHVIDEOMODE, KEY_FN_F8,
1943 KEY_FN_F9, KEY_FN_F10, KEY_FN_F11, KEY_SUSPEND,
0f089147
HMH		 1944
1945 /* Scan codes 0x0C to 0x1F: Other ACPI HKEY hot keys */
edf0e0e5
HMH		 1946 KEY_UNKNOWN, /* 0x0C: FN+BACKSPACE */
1947 KEY_UNKNOWN, /* 0x0D: FN+INSERT */
1948 KEY_UNKNOWN, /* 0x0E: FN+DELETE */
0f089147
HMH		 1949
1950 /* brightness: firmware always reacts to them, unless
1951 * X.org did some tricks in the radeon BIOS scratch
1952 * registers of *some* models */
e927c08d 1953 KEY_RESERVED, /* 0x0F: FN+HOME (brightness up) */
e927c08d 1954 KEY_RESERVED, /* 0x10: FN+END (brightness down) */
0f089147
HMH		 1955
1956 /* Thinklight: firmware always react to it */
edf0e0e5 1957 KEY_RESERVED, /* 0x11: FN+PGUP (thinklight toggle) */
0f089147 1958
edf0e0e5
HMH		 1959 KEY_UNKNOWN, /* 0x12: FN+PGDOWN */
1960 KEY_ZOOM, /* 0x13: FN+SPACE (zoom) */
0f089147
HMH		 1961
1962 /* Volume: firmware always react to it and reprograms
1963 * the built-in *extra* mixer. Never map it to control
1964 * another mixer by default. */
e927c08d
HMH		 1965 KEY_RESERVED, /* 0x14: VOLUME UP */
1966 KEY_RESERVED, /* 0x15: VOLUME DOWN */
1967 KEY_RESERVED, /* 0x16: MUTE */
0f089147 1968
edf0e0e5 1969 KEY_VENDOR, /* 0x17: Thinkpad/AccessIBM/Lenovo */
0f089147 1970
edf0e0e5
HMH		 1971 /* (assignments unknown, please report if found) */
1972 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN,
1973 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN,
1974 };
1975 static u16 lenovo_keycode_map[] __initdata = {
1976 /* Scan Codes 0x00 to 0x0B: ACPI HKEY FN+F1..F12 */
1977 KEY_FN_F1, KEY_COFFEE, KEY_BATTERY, KEY_SLEEP,
1978 KEY_WLAN, KEY_FN_F6, KEY_SWITCHVIDEOMODE, KEY_FN_F8,
1979 KEY_FN_F9, KEY_FN_F10, KEY_FN_F11, KEY_SUSPEND,
0f089147
HMH		 1980
1981 /* Scan codes 0x0C to 0x1F: Other ACPI HKEY hot keys */
edf0e0e5
HMH		 1982 KEY_UNKNOWN, /* 0x0C: FN+BACKSPACE */
1983 KEY_UNKNOWN, /* 0x0D: FN+INSERT */
1984 KEY_UNKNOWN, /* 0x0E: FN+DELETE */
0f089147 1985
b5972796
HMH		 1986 /* These either have to go through ACPI video, or
1987 * act like in the IBM ThinkPads, so don't ever
1988 * enable them by default */
56a185b4 1989 KEY_RESERVED, /* 0x0F: FN+HOME (brightness up) */
56a185b4 1990 KEY_RESERVED, /* 0x10: FN+END (brightness down) */
0f089147 1991
edf0e0e5 1992 KEY_RESERVED, /* 0x11: FN+PGUP (thinklight toggle) */
0f089147 1993
edf0e0e5
HMH		 1994 KEY_UNKNOWN, /* 0x12: FN+PGDOWN */
1995 KEY_ZOOM, /* 0x13: FN+SPACE (zoom) */
0f089147
HMH		 1996
1997 /* Volume: z60/z61, T60 (BIOS version?): firmware always
1998 * react to it and reprograms the built-in *extra* mixer.
1999 * Never map it to control another mixer by default.
2000 *
2001 * T60?, T61, R60?, R61: firmware and EC tries to send
2002 * these over the regular keyboard, so these are no-ops,
2003 * but there are still weird bugs re. MUTE, so do not
2004 * change unless you get test reports from all Lenovo
2005 * models. May cause the BIOS to interfere with the
2006 * HDA mixer.
2007 */
e927c08d
HMH		 2008 KEY_RESERVED, /* 0x14: VOLUME UP */
2009 KEY_RESERVED, /* 0x15: VOLUME DOWN */
2010 KEY_RESERVED, /* 0x16: MUTE */
0f089147 2011
edf0e0e5 2012 KEY_VENDOR, /* 0x17: Thinkpad/AccessIBM/Lenovo */
0f089147 2013
edf0e0e5
HMH		 2014 /* (assignments unknown, please report if found) */
2015 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN,
2016 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN,
2017 };
2018
2019#define TPACPI_HOTKEY_MAP_LEN ARRAY_SIZE(ibm_keycode_map)
2020#define TPACPI_HOTKEY_MAP_SIZE sizeof(ibm_keycode_map)
2021#define TPACPI_HOTKEY_MAP_TYPESIZE sizeof(ibm_keycode_map[0])
2022
6a38abbf 2023 int res, i;
74941a69 2024 int status;
1b6521dc 2025 int hkeyv;
b86c4722 2026
fe08bc4b
HMH		 2027 vdbg_printk(TPACPI_DBG_INIT, "initializing hotkey subdriver\n");
2028
6a38abbf 2029 BUG_ON(!tpacpi_inputdev);
01e88f25
HMH		 2030 BUG_ON(tpacpi_inputdev->open != NULL ||
2031 tpacpi_inputdev->close != NULL);
6a38abbf 2032
e0c7dfe7 2033 TPACPI_ACPIHANDLE_INIT(hkey);
40ca9fdf 2034 mutex_init(&hotkey_mutex);
5fba344c 2035
01e88f25
HMH		 2036#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
2037 mutex_init(&hotkey_thread_mutex);
2038 mutex_init(&hotkey_thread_data_mutex);
2039#endif
2040
56b6aeb0 2041 /* hotkey not supported on 570 */
d8fd94d9 2042 tp_features.hotkey = hkey_handle != NULL;
56b6aeb0 2043
fe08bc4b 2044 vdbg_printk(TPACPI_DBG_INIT, "hotkeys are %s\n",
d8fd94d9 2045 str_supported(tp_features.hotkey));
fe08bc4b 2046
d8fd94d9 2047 if (tp_features.hotkey) {
6c231bd5 2048 hotkey_dev_attributes = create_attr_set(13, NULL);
a0416420
HMH		 2049 if (!hotkey_dev_attributes)
2050 return -ENOMEM;
ff80f137
HMH		 2051 res = add_many_to_attr_set(hotkey_dev_attributes,
2052 hotkey_attributes,
2053 ARRAY_SIZE(hotkey_attributes));
a0416420
HMH		 2054 if (res)
2055 return res;
2056
56b6aeb0 2057 /* mask not supported on 570, 600e/x, 770e, 770x, A21e, A2xm/p,
1b6521dc
HMH		 2058 A30, R30, R31, T20-22, X20-21, X22-24. Detected by checking
2059 for HKEY interface version 0x100 */
2060 if (acpi_evalf(hkey_handle, &hkeyv, "MHKV", "qd")) {
2061 if ((hkeyv >> 8) != 1) {
e0c7dfe7 2062 printk(TPACPI_ERR "unknown version of the "
1b6521dc 2063 "HKEY interface: 0x%x\n", hkeyv);
e0c7dfe7
HMH		 2064 printk(TPACPI_ERR "please report this to %s\n",
2065 TPACPI_MAIL);
1b6521dc
HMH		 2066 } else {
2067 /*
2068 * MHKV 0x100 in A31, R40, R40e,
2069 * T4x, X31, and later
01e88f25 2070 */
1b6521dc
HMH		 2071 tp_features.hotkey_mask = 1;
2072 }
2073 }
56b6aeb0 2074
fe08bc4b 2075 vdbg_printk(TPACPI_DBG_INIT, "hotkey masks are %s\n",
d8fd94d9 2076 str_supported(tp_features.hotkey_mask));
fe08bc4b 2077
9b010de5 2078 if (tp_features.hotkey_mask) {
9b010de5 2079 if (!acpi_evalf(hkey_handle, &hotkey_all_mask,
1b6521dc 2080 "MHKA", "qd")) {
e0c7dfe7 2081 printk(TPACPI_ERR
1b6521dc
HMH		 2082 "missing MHKA handler, "
2083 "please report this to %s\n",
e0c7dfe7 2084 TPACPI_MAIL);
35ff8b9f
HMH		 2085 /* FN+F12, FN+F4, FN+F3 */
2086 hotkey_all_mask = 0x080cU;
1b6521dc 2087 }
9b010de5
HMH		 2088 }
2089
01e88f25
HMH		 2090 /* hotkey_source_mask *must* be zero for
2091 * the first hotkey_mask_get */
b2c985e7 2092 res = hotkey_status_get(&hotkey_orig_status);
a0416420 2093 if (!res && tp_features.hotkey_mask) {
b2c985e7
HMH		 2094 res = hotkey_mask_get();
2095 hotkey_orig_mask = hotkey_mask;
2096 if (!res) {
2097 res = add_many_to_attr_set(
2098 hotkey_dev_attributes,
2099 hotkey_mask_attributes,
2100 ARRAY_SIZE(hotkey_mask_attributes));
2101 }
a0416420 2102 }
74941a69 2103
01e88f25
HMH		 2104#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
2105 if (tp_features.hotkey_mask) {
2106 hotkey_source_mask = TPACPI_HKEY_NVRAM_GOOD_MASK
2107 & ~hotkey_all_mask;
2108 } else {
2109 hotkey_source_mask = TPACPI_HKEY_NVRAM_GOOD_MASK;
2110 }
2111
2112 vdbg_printk(TPACPI_DBG_INIT,
2113 "hotkey source mask 0x%08x, polling freq %d\n",
2114 hotkey_source_mask, hotkey_poll_freq);
2115#endif
2116
74941a69
HMH		 2117 /* Not all thinkpads have a hardware radio switch */
2118 if (!res && acpi_evalf(hkey_handle, &status, "WLSW", "qd")) {
2119 tp_features.hotkey_wlsw = 1;
e0c7dfe7 2120 printk(TPACPI_INFO
74941a69
HMH		 2121 "radio switch found; radios are %s\n",
2122 enabled(status, 0));
2123 res = add_to_attr_set(hotkey_dev_attributes,
2124 &dev_attr_hotkey_radio_sw.attr);
2125 }
2126
6c231bd5
HMH		 2127 /* For X41t, X60t, X61t Tablets... */
2128 if (!res && acpi_evalf(hkey_handle, &status, "MHKG", "qd")) {
2129 tp_features.hotkey_tablet = 1;
2130 printk(TPACPI_INFO
2131 "possible tablet mode switch found; "
2132 "ThinkPad in %s mode\n",
2133 (status & TP_HOTKEY_TABLET_MASK)?
2134 "tablet" : "laptop");
2135 res = add_to_attr_set(hotkey_dev_attributes,
2136 &dev_attr_hotkey_tablet_mode.attr);
2137 }
2138
a0416420
HMH		 2139 if (!res)
2140 res = register_attr_set_with_sysfs(
2141 hotkey_dev_attributes,
2142 &tpacpi_pdev->dev.kobj);
b86c4722
HMH		 2143 if (res)
2144 return res;
6a38abbf 2145
edf0e0e5
HMH		 2146 /* Set up key map */
2147
2148 hotkey_keycode_map = kmalloc(TPACPI_HOTKEY_MAP_SIZE,
2149 GFP_KERNEL);
2150 if (!hotkey_keycode_map) {
35ff8b9f
HMH		 2151 printk(TPACPI_ERR
2152 "failed to allocate memory for key map\n");
edf0e0e5
HMH		 2153 return -ENOMEM;
2154 }
2155
2156 if (thinkpad_id.vendor == PCI_VENDOR_ID_LENOVO) {
2157 dbg_printk(TPACPI_DBG_INIT,
2158 "using Lenovo default hot key map\n");
2159 memcpy(hotkey_keycode_map, &lenovo_keycode_map,
2160 TPACPI_HOTKEY_MAP_SIZE);
2161 } else {
2162 dbg_printk(TPACPI_DBG_INIT,
2163 "using IBM default hot key map\n");
2164 memcpy(hotkey_keycode_map, &ibm_keycode_map,
2165 TPACPI_HOTKEY_MAP_SIZE);
2166 }
2167
6a38abbf
HMH		 2168 set_bit(EV_KEY, tpacpi_inputdev->evbit);
2169 set_bit(EV_MSC, tpacpi_inputdev->evbit);
2170 set_bit(MSC_SCAN, tpacpi_inputdev->mscbit);
edf0e0e5
HMH		 2171 tpacpi_inputdev->keycodesize = TPACPI_HOTKEY_MAP_TYPESIZE;
2172 tpacpi_inputdev->keycodemax = TPACPI_HOTKEY_MAP_LEN;
2173 tpacpi_inputdev->keycode = hotkey_keycode_map;
2174 for (i = 0; i < TPACPI_HOTKEY_MAP_LEN; i++) {
6a38abbf
HMH		 2175 if (hotkey_keycode_map[i] != KEY_RESERVED) {
2176 set_bit(hotkey_keycode_map[i],
2177 tpacpi_inputdev->keybit);
2178 } else {
2179 if (i < sizeof(hotkey_reserved_mask)*8)
2180 hotkey_reserved_mask |= 1 << i;
2181 }
2182 }
2183
5c29d58f
HMH		 2184 if (tp_features.hotkey_wlsw) {
2185 set_bit(EV_SW, tpacpi_inputdev->evbit);
2186 set_bit(SW_RADIO, tpacpi_inputdev->swbit);
2187 }
6c231bd5 2188 if (tp_features.hotkey_tablet) {
b3ec6f91
HMH		 2189 set_bit(EV_SW, tpacpi_inputdev->evbit);
2190 set_bit(SW_TABLET_MODE, tpacpi_inputdev->swbit);
2191 }
5c29d58f 2192
b5972796
HMH		 2193 /* Do not issue duplicate brightness change events to
2194 * userspace */
2195 if (!tp_features.bright_acpimode)
2196 /* update bright_acpimode... */
2197 tpacpi_check_std_acpi_brightness_support();
2198
2199 if (tp_features.bright_acpimode) {
2200 printk(TPACPI_INFO
2201 "This ThinkPad has standard ACPI backlight "
2202 "brightness control, supported by the ACPI "
2203 "video driver\n");
2204 printk(TPACPI_NOTICE
2205 "Disabling thinkpad-acpi brightness events "
2206 "by default...\n");
2207
2208 /* The hotkey_reserved_mask change below is not
2209 * necessary while the keys are at KEY_RESERVED in the
2210 * default map, but better safe than sorry, leave it
2211 * here as a marker of what we have to do, especially
2212 * when we finally become able to set this at runtime
2213 * on response to X.org requests */
2214 hotkey_reserved_mask |=
2215 (1 << TP_ACPI_HOTKEYSCAN_FNHOME)
2216 | (1 << TP_ACPI_HOTKEYSCAN_FNEND);
2217 }
2218
1a343760
HMH		 2219 dbg_printk(TPACPI_DBG_INIT,
2220 "enabling hot key handling\n");
b2c985e7
HMH		 2221 res = hotkey_status_set(1);
2222 if (res)
2223 return res;
01e88f25
HMH		 2224 res = hotkey_mask_set(((hotkey_all_mask | hotkey_source_mask)
2225 & ~hotkey_reserved_mask)
1a343760 2226 | hotkey_orig_mask);
01e88f25 2227 if (res < 0 && res != -ENXIO)
1a343760 2228 return res;
ff80f137
HMH		 2229
2230 dbg_printk(TPACPI_DBG_INIT,
2231 "legacy hot key reporting over procfs %s\n",
2232 (hotkey_report_mode < 2) ?
2233 "enabled" : "disabled");
01e88f25 2234
01e88f25
HMH		 2235 tpacpi_inputdev->open = &hotkey_inputdev_open;
2236 tpacpi_inputdev->close = &hotkey_inputdev_close;
2237
2238 hotkey_poll_setup_safe(1);
7526696a 2239 tpacpi_input_send_radiosw();
6c231bd5 2240 tpacpi_input_send_tabletsw();
56b6aeb0
HMH		 2241 }
2242
d8fd94d9 2243 return (tp_features.hotkey)? 0 : 1;
56b6aeb0
HMH		 2244}
2245
2246static void hotkey_exit(void)
2247{
01e88f25
HMH		 2248#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
2249 hotkey_poll_stop_sync();
2250#endif
2251
d8fd94d9 2252 if (tp_features.hotkey) {
35ff8b9f
HMH		 2253 dbg_printk(TPACPI_DBG_EXIT,
2254 "restoring original hot key mask\n");
b2c985e7
HMH		 2255 /* no short-circuit boolean operator below! */
2256 if ((hotkey_mask_set(hotkey_orig_mask) |
2257 hotkey_status_set(hotkey_orig_status)) != 0)
35ff8b9f
HMH		 2258 printk(TPACPI_ERR
2259 "failed to restore hot key mask "
2260 "to BIOS defaults\n");
5fba344c 2261 }
a0416420
HMH		 2262
2263 if (hotkey_dev_attributes) {
2264 delete_attr_set(hotkey_dev_attributes, &tpacpi_pdev->dev.kobj);
2265 hotkey_dev_attributes = NULL;
2266 }
56b6aeb0
HMH		 2267}
2268
2269static void hotkey_notify(struct ibm_struct *ibm, u32 event)
2270{
6a38abbf 2271 u32 hkey;
b7c8c200 2272 unsigned int scancode;
3eea123d 2273 int send_acpi_ev;
3e5ce914 2274 int ignore_acpi_ev;
3b64b51d 2275 int unk_ev;
3eea123d
HMH		 2276
2277 if (event != 0x80) {
35ff8b9f
HMH		 2278 printk(TPACPI_ERR
2279 "unknown HKEY notification event %d\n", event);
3eea123d 2280 /* forward it to userspace, maybe it knows how to handle it */
35ff8b9f
HMH		 2281 acpi_bus_generate_netlink_event(
2282 ibm->acpi->device->pnp.device_class,
2283 ibm->acpi->device->dev.bus_id,
2284 event, 0);
3eea123d
HMH		 2285 return;
2286 }
2287
2288 while (1) {
2289 if (!acpi_evalf(hkey_handle, &hkey, "MHKP", "d")) {
e0c7dfe7 2290 printk(TPACPI_ERR "failed to retrieve HKEY event\n");
3eea123d
HMH		 2291 return;
2292 }
2293
2294 if (hkey == 0) {
2295 /* queue empty */
2296 return;
2297 }
2298
3b64b51d 2299 send_acpi_ev = 1;
3e5ce914 2300 ignore_acpi_ev = 0;
3b64b51d 2301 unk_ev = 0;
56b6aeb0 2302
ff80f137
HMH		 2303 switch (hkey >> 12) {
2304 case 1:
2305 /* 0x1000-0x1FFF: key presses */
2306 scancode = hkey & 0xfff;
2307 if (scancode > 0 && scancode < 0x21) {
2308 scancode--;
01e88f25
HMH		 2309 if (!(hotkey_source_mask & (1 << scancode))) {
2310 tpacpi_input_send_key(scancode);
3b64b51d 2311 send_acpi_ev = 0;
01e88f25
HMH		 2312 } else {
2313 ignore_acpi_ev = 1;
2314 }
ff80f137 2315 } else {
3b64b51d 2316 unk_ev = 1;
ff80f137
HMH		 2317 }
2318 break;
a713b4d7
HMH		 2319 case 2:
2320 /* Wakeup reason */
2321 switch (hkey) {
2322 case 0x2304: /* suspend, undock */
2323 case 0x2404: /* hibernation, undock */
2324 hotkey_wakeup_reason = TP_ACPI_WAKEUP_UNDOCK;
2325 ignore_acpi_ev = 1;
2326 break;
2327 case 0x2305: /* suspend, bay eject */
2328 case 0x2405: /* hibernation, bay eject */
2329 hotkey_wakeup_reason = TP_ACPI_WAKEUP_BAYEJ;
2330 ignore_acpi_ev = 1;
2331 break;
2332 default:
2333 unk_ev = 1;
2334 }
2335 if (hotkey_wakeup_reason != TP_ACPI_WAKEUP_NONE) {
2336 printk(TPACPI_INFO
2337 "woke up due to a hot-unplug "
2338 "request...\n");
50ebec09 2339 hotkey_wakeup_reason_notify_change();
a713b4d7
HMH		 2340 }
2341 break;
2342 case 3:
2343 /* bay-related wakeups */
2344 if (hkey == 0x3003) {
2345 hotkey_autosleep_ack = 1;
2346 printk(TPACPI_INFO
2347 "bay ejected\n");
50ebec09 2348 hotkey_wakeup_hotunplug_complete_notify_change();
a713b4d7
HMH		 2349 } else {
2350 unk_ev = 1;
2351 }
2352 break;
2353 case 4:
2354 /* dock-related wakeups */
2355 if (hkey == 0x4003) {
2356 hotkey_autosleep_ack = 1;
2357 printk(TPACPI_INFO
2358 "undocked\n");
50ebec09 2359 hotkey_wakeup_hotunplug_complete_notify_change();
a713b4d7
HMH		 2360 } else {
2361 unk_ev = 1;
2362 }
2363 break;
ff80f137 2364 case 5:
d1edb2b5 2365 /* 0x5000-0x5FFF: human interface helpers */
3b64b51d 2366 switch (hkey) {
d1edb2b5 2367 case 0x5010: /* Lenovo new BIOS: brightness changed */
d1edb2b5
HMH		 2368 case 0x500b: /* X61t: tablet pen inserted into bay */
2369 case 0x500c: /* X61t: tablet pen removed from bay */
3b64b51d 2370 break;
6c231bd5
HMH		 2371 case 0x5009: /* X41t-X61t: swivel up (tablet mode) */
2372 case 0x500a: /* X41t-X61t: swivel down (normal mode) */
2373 tpacpi_input_send_tabletsw();
2374 hotkey_tablet_mode_notify_change();
b3ec6f91
HMH		 2375 send_acpi_ev = 0;
2376 break;
3b64b51d
HMH		 2377 case 0x5001:
2378 case 0x5002:
2379 /* LID switch events. Do not propagate */
3e5ce914 2380 ignore_acpi_ev = 1;
3b64b51d
HMH		 2381 break;
2382 default:
2383 unk_ev = 1;
ff80f137
HMH		 2384 }
2385 break;
2386 case 7:
2387 /* 0x7000-0x7FFF: misc */
2388 if (tp_features.hotkey_wlsw && hkey == 0x7000) {
2389 tpacpi_input_send_radiosw();
50ebec09 2390 hotkey_radio_sw_notify_change();
3b64b51d 2391 send_acpi_ev = 0;
6a38abbf 2392 break;
6a38abbf 2393 }
ff80f137
HMH		 2394 /* fallthrough to default */
2395 default:
3b64b51d
HMH		 2396 unk_ev = 1;
2397 }
2398 if (unk_ev) {
35ff8b9f
HMH		 2399 printk(TPACPI_NOTICE
2400 "unhandled HKEY event 0x%04x\n", hkey);
6a38abbf 2401 }
ff80f137 2402
3eea123d 2403 /* Legacy events */
35ff8b9f
HMH		 2404 if (!ignore_acpi_ev &&
2405 (send_acpi_ev || hotkey_report_mode < 2)) {
2406 acpi_bus_generate_proc_event(ibm->acpi->device,
2407 event, hkey);
3e5ce914 2408 }
ff80f137 2409
3eea123d 2410 /* netlink events */
3e5ce914 2411 if (!ignore_acpi_ev && send_acpi_ev) {
35ff8b9f
HMH		 2412 acpi_bus_generate_netlink_event(
2413 ibm->acpi->device->pnp.device_class,
2414 ibm->acpi->device->dev.bus_id,
2415 event, hkey);
3eea123d 2416 }
56b6aeb0
HMH		 2417 }
2418}
2419
a713b4d7
HMH		 2420static void hotkey_suspend(pm_message_t state)
2421{
2422 /* Do these on suspend, we get the events on early resume! */
2423 hotkey_wakeup_reason = TP_ACPI_WAKEUP_NONE;
2424 hotkey_autosleep_ack = 0;
2425}
2426
5c29d58f
HMH		 2427static void hotkey_resume(void)
2428{
b2c985e7 2429 if (hotkey_mask_get())
35ff8b9f
HMH		 2430 printk(TPACPI_ERR
2431 "error while trying to read hot key mask "
2432 "from firmware\n");
5c29d58f 2433 tpacpi_input_send_radiosw();
50ebec09 2434 hotkey_radio_sw_notify_change();
6c231bd5 2435 hotkey_tablet_mode_notify_change();
50ebec09
HMH		 2436 hotkey_wakeup_reason_notify_change();
2437 hotkey_wakeup_hotunplug_complete_notify_change();
01e88f25 2438 hotkey_poll_setup_safe(0);
5c29d58f
HMH		 2439}
2440
a0416420 2441/* procfs -------------------------------------------------------------- */
78f81cc4 2442static int hotkey_read(char *p)
1da177e4 2443{
ae92bd17 2444 int res, status;
1da177e4
LT		 2445 int len = 0;
2446
d8fd94d9 2447 if (!tp_features.hotkey) {
78f81cc4
BD		 2448 len += sprintf(p + len, "status:\t\tnot supported\n");
2449 return len;
2450 }
2451
fc589a3c
HMH		 2452 if (mutex_lock_interruptible(&hotkey_mutex))
2453 return -ERESTARTSYS;
b2c985e7
HMH		 2454 res = hotkey_status_get(&status);
2455 if (!res)
2456 res = hotkey_mask_get();
40ca9fdf 2457 mutex_unlock(&hotkey_mutex);
b86c4722
HMH		 2458 if (res)
2459 return res;
1da177e4
LT		 2460
2461 len += sprintf(p + len, "status:\t\t%s\n", enabled(status, 0));
d8fd94d9 2462 if (tp_features.hotkey_mask) {
b2c985e7 2463 len += sprintf(p + len, "mask:\t\t0x%08x\n", hotkey_mask);
1da177e4
LT		 2464 len += sprintf(p + len,
2465 "commands:\tenable, disable, reset, <mask>\n");
2466 } else {
2467 len += sprintf(p + len, "mask:\t\tnot supported\n");
2468 len += sprintf(p + len, "commands:\tenable, disable, reset\n");
2469 }
2470
2471 return len;
2472}
2473
78f81cc4 2474static int hotkey_write(char *buf)
1da177e4 2475{
ae92bd17
HMH		 2476 int res, status;
2477 u32 mask;
1da177e4 2478 char *cmd;
1da177e4 2479
d8fd94d9 2480 if (!tp_features.hotkey)
1da177e4
LT		 2481 return -ENODEV;
2482
fc589a3c
HMH		 2483 if (mutex_lock_interruptible(&hotkey_mutex))
2484 return -ERESTARTSYS;
40ca9fdf 2485
b2c985e7
HMH		 2486 status = -1;
2487 mask = hotkey_mask;
78f81cc4 2488
40ca9fdf 2489 res = 0;
1da177e4
LT		 2490 while ((cmd = next_cmd(&buf))) {
2491 if (strlencmp(cmd, "enable") == 0) {
2492 status = 1;
2493 } else if (strlencmp(cmd, "disable") == 0) {
2494 status = 0;
2495 } else if (strlencmp(cmd, "reset") == 0) {
78f81cc4
BD		 2496 status = hotkey_orig_status;
2497 mask = hotkey_orig_mask;
1da177e4
LT		 2498 } else if (sscanf(cmd, "0x%x", &mask) == 1) {
2499 /* mask set */
2500 } else if (sscanf(cmd, "%x", &mask) == 1) {
2501 /* mask set */
40ca9fdf
HMH		 2502 } else {
2503 res = -EINVAL;
2504 goto errexit;
2505 }
1da177e4 2506 }
b2c985e7
HMH		 2507 if (status != -1)
2508 res = hotkey_status_set(status);
1da177e4 2509
b2c985e7
HMH		 2510 if (!res && mask != hotkey_mask)
2511 res = hotkey_mask_set(mask);
1da177e4 2512
40ca9fdf
HMH		 2513errexit:
2514 mutex_unlock(&hotkey_mutex);
2515 return res;
78f81cc4 2516}
1da177e4 2517
1ba90e3a 2518static const struct acpi_device_id ibm_htk_device_ids[] = {
e0c7dfe7 2519 {TPACPI_ACPI_HKEY_HID, 0},
1ba90e3a
TR		 2520 {"", 0},
2521};
2522
8d376cd6 2523static struct tp_acpi_drv_struct ibm_hotkey_acpidriver = {
1ba90e3a 2524 .hid = ibm_htk_device_ids,
8d376cd6
HMH		 2525 .notify = hotkey_notify,
2526 .handle = &hkey_handle,
2527 .type = ACPI_DEVICE_NOTIFY,
2528};
2529
a5763f22
HMH		 2530static struct ibm_struct hotkey_driver_data = {
2531 .name = "hotkey",
a5763f22
HMH		 2532 .read = hotkey_read,
2533 .write = hotkey_write,
2534 .exit = hotkey_exit,
5c29d58f 2535 .resume = hotkey_resume,
a713b4d7 2536 .suspend = hotkey_suspend,
8d376cd6 2537 .acpi = &ibm_hotkey_acpidriver,
a5763f22
HMH		 2538};
2539
56b6aeb0
HMH		 2540/*************************************************************************
2541 * Bluetooth subdriver
2542 */
1da177e4 2543
f74a27d4
HMH		 2544enum {
2545 /* ACPI GBDC/SBDC bits */
2546 TP_ACPI_BLUETOOTH_HWPRESENT = 0x01, /* Bluetooth hw available */
2547 TP_ACPI_BLUETOOTH_RADIOSSW = 0x02, /* Bluetooth radio enabled */
2548 TP_ACPI_BLUETOOTH_UNK = 0x04, /* unknown function */
2549};
2550
2551static int bluetooth_get_radiosw(void);
2552static int bluetooth_set_radiosw(int radio_on);
2553
d3a6ade4
HMH		 2554/* sysfs bluetooth enable ---------------------------------------------- */
2555static ssize_t bluetooth_enable_show(struct device *dev,
2556 struct device_attribute *attr,
2557 char *buf)
2558{
2559 int status;
2560
2561 status = bluetooth_get_radiosw();
2562 if (status < 0)
2563 return status;
2564
2565 return snprintf(buf, PAGE_SIZE, "%d\n", status ? 1 : 0);
2566}
2567
2568static ssize_t bluetooth_enable_store(struct device *dev,
2569 struct device_attribute *attr,
2570 const char *buf, size_t count)
2571{
2572 unsigned long t;
2573 int res;
2574
2575 if (parse_strtoul(buf, 1, &t))
2576 return -EINVAL;
2577
2578 res = bluetooth_set_radiosw(t);
2579
2580 return (res) ? res : count;
2581}
2582
2583static struct device_attribute dev_attr_bluetooth_enable =
cc4c24e1 2584 __ATTR(bluetooth_enable, S_IWUSR | S_IRUGO,
d3a6ade4
HMH		 2585 bluetooth_enable_show, bluetooth_enable_store);
2586
2587/* --------------------------------------------------------------------- */
2588
2589static struct attribute *bluetooth_attributes[] = {
2590 &dev_attr_bluetooth_enable.attr,
2591 NULL
2592};
2593
2594static const struct attribute_group bluetooth_attr_group = {
d3a6ade4
HMH		 2595 .attrs = bluetooth_attributes,
2596};
2597
a5763f22 2598static int __init bluetooth_init(struct ibm_init_struct *iibm)
1da177e4 2599{
d3a6ade4 2600 int res;
d6fdd1e9
HMH		 2601 int status = 0;
2602
fe08bc4b
HMH		 2603 vdbg_printk(TPACPI_DBG_INIT, "initializing bluetooth subdriver\n");
2604
e0c7dfe7 2605 TPACPI_ACPIHANDLE_INIT(hkey);
5fba344c 2606
78f81cc4
BD		 2607 /* bluetooth not supported on 570, 600e/x, 770e, 770x, A21e, A2xm/p,
2608 G4x, R30, R31, R40e, R50e, T20-22, X20-21 */
d8fd94d9 2609 tp_features.bluetooth = hkey_handle &&
d6fdd1e9
HMH		 2610 acpi_evalf(hkey_handle, &status, "GBDC", "qd");
2611
2612 vdbg_printk(TPACPI_DBG_INIT, "bluetooth is %s, status 0x%02x\n",
2613 str_supported(tp_features.bluetooth),
2614 status);
2615
d3a6ade4
HMH		 2616 if (tp_features.bluetooth) {
2617 if (!(status & TP_ACPI_BLUETOOTH_HWPRESENT)) {
2618 /* no bluetooth hardware present in system */
2619 tp_features.bluetooth = 0;
2620 dbg_printk(TPACPI_DBG_INIT,
2621 "bluetooth hardware not installed\n");
2622 } else {
2623 res = sysfs_create_group(&tpacpi_pdev->dev.kobj,
2624 &bluetooth_attr_group);
2625 if (res)
2626 return res;
2627 }
d6fdd1e9 2628 }
fe08bc4b 2629
d8fd94d9 2630 return (tp_features.bluetooth)? 0 : 1;
1da177e4
LT		 2631}
2632
d3a6ade4
HMH		 2633static void bluetooth_exit(void)
2634{
2635 sysfs_remove_group(&tpacpi_pdev->dev.kobj,
2636 &bluetooth_attr_group);
2637}
2638
d6fdd1e9 2639static int bluetooth_get_radiosw(void)
1da177e4
LT		 2640{
2641 int status;
2642
d6fdd1e9
HMH		 2643 if (!tp_features.bluetooth)
2644 return -ENODEV;
1da177e4 2645
d6fdd1e9
HMH		 2646 if (!acpi_evalf(hkey_handle, &status, "GBDC", "d"))
2647 return -EIO;
2648
2649 return ((status & TP_ACPI_BLUETOOTH_RADIOSSW) != 0);
2650}
2651
2652static int bluetooth_set_radiosw(int radio_on)
2653{
2654 int status;
2655
2656 if (!tp_features.bluetooth)
2657 return -ENODEV;
2658
2659 if (!acpi_evalf(hkey_handle, &status, "GBDC", "d"))
2660 return -EIO;
2661 if (radio_on)
2662 status |= TP_ACPI_BLUETOOTH_RADIOSSW;
2663 else
2664 status &= ~TP_ACPI_BLUETOOTH_RADIOSSW;
2665 if (!acpi_evalf(hkey_handle, NULL, "SBDC", "vd", status))
2666 return -EIO;
2667
2668 return 0;
1da177e4
LT		 2669}
2670
d3a6ade4 2671/* procfs -------------------------------------------------------------- */
78f81cc4 2672static int bluetooth_read(char *p)
1da177e4
LT		 2673{
2674 int len = 0;
d6fdd1e9 2675 int status = bluetooth_get_radiosw();
1da177e4 2676
d8fd94d9 2677 if (!tp_features.bluetooth)
1da177e4 2678 len += sprintf(p + len, "status:\t\tnot supported\n");
1da177e4 2679 else {
d6fdd1e9
HMH		 2680 len += sprintf(p + len, "status:\t\t%s\n",
2681 (status)? "enabled" : "disabled");
1da177e4
LT		 2682 len += sprintf(p + len, "commands:\tenable, disable\n");
2683 }
2684
2685 return len;
2686}
2687
78f81cc4 2688static int bluetooth_write(char *buf)
1da177e4 2689{
1da177e4 2690 char *cmd;
1da177e4 2691
d8fd94d9 2692 if (!tp_features.bluetooth)
78f81cc4 2693 return -ENODEV;
1da177e4
LT		 2694
2695 while ((cmd = next_cmd(&buf))) {
2696 if (strlencmp(cmd, "enable") == 0) {
d6fdd1e9 2697 bluetooth_set_radiosw(1);
1da177e4 2698 } else if (strlencmp(cmd, "disable") == 0) {
d6fdd1e9 2699 bluetooth_set_radiosw(0);
1da177e4
LT		 2700 } else
2701 return -EINVAL;
1da177e4
LT		 2702 }
2703
1da177e4
LT		 2704 return 0;
2705}
2706
a5763f22
HMH		 2707static struct ibm_struct bluetooth_driver_data = {
2708 .name = "bluetooth",
2709 .read = bluetooth_read,
2710 .write = bluetooth_write,
d3a6ade4 2711 .exit = bluetooth_exit,
a5763f22
HMH		 2712};
2713
56b6aeb0
HMH		 2714/*************************************************************************
2715 * Wan subdriver
2716 */
2717
f74a27d4
HMH		 2718enum {
2719 /* ACPI GWAN/SWAN bits */
2720 TP_ACPI_WANCARD_HWPRESENT = 0x01, /* Wan hw available */
2721 TP_ACPI_WANCARD_RADIOSSW = 0x02, /* Wan radio enabled */
2722 TP_ACPI_WANCARD_UNK = 0x04, /* unknown function */
2723};
2724
2725static int wan_get_radiosw(void);
2726static int wan_set_radiosw(int radio_on);
2727
d3a6ade4
HMH		 2728/* sysfs wan enable ---------------------------------------------------- */
2729static ssize_t wan_enable_show(struct device *dev,
2730 struct device_attribute *attr,
2731 char *buf)
2732{
2733 int status;
2734
2735 status = wan_get_radiosw();
2736 if (status < 0)
2737 return status;
2738
2739 return snprintf(buf, PAGE_SIZE, "%d\n", status ? 1 : 0);
2740}
2741
2742static ssize_t wan_enable_store(struct device *dev,
2743 struct device_attribute *attr,
2744 const char *buf, size_t count)
2745{
2746 unsigned long t;
2747 int res;
2748
2749 if (parse_strtoul(buf, 1, &t))
2750 return -EINVAL;
2751
2752 res = wan_set_radiosw(t);
2753
2754 return (res) ? res : count;
2755}
2756
2757static struct device_attribute dev_attr_wan_enable =
cc4c24e1 2758 __ATTR(wwan_enable, S_IWUSR | S_IRUGO,
d3a6ade4
HMH		 2759 wan_enable_show, wan_enable_store);
2760
2761/* --------------------------------------------------------------------- */
2762
2763static struct attribute *wan_attributes[] = {
2764 &dev_attr_wan_enable.attr,
2765 NULL
2766};
2767
2768static const struct attribute_group wan_attr_group = {
d3a6ade4
HMH		 2769 .attrs = wan_attributes,
2770};
2771
a5763f22 2772static int __init wan_init(struct ibm_init_struct *iibm)
42adb53c 2773{
d3a6ade4 2774 int res;
d6fdd1e9
HMH		 2775 int status = 0;
2776
fe08bc4b
HMH		 2777 vdbg_printk(TPACPI_DBG_INIT, "initializing wan subdriver\n");
2778
e0c7dfe7 2779 TPACPI_ACPIHANDLE_INIT(hkey);
5fba344c 2780
d8fd94d9 2781 tp_features.wan = hkey_handle &&
d6fdd1e9
HMH		 2782 acpi_evalf(hkey_handle, &status, "GWAN", "qd");
2783
2784 vdbg_printk(TPACPI_DBG_INIT, "wan is %s, status 0x%02x\n",
2785 str_supported(tp_features.wan),
2786 status);
2787
d3a6ade4
HMH		 2788 if (tp_features.wan) {
2789 if (!(status & TP_ACPI_WANCARD_HWPRESENT)) {
2790 /* no wan hardware present in system */
2791 tp_features.wan = 0;
2792 dbg_printk(TPACPI_DBG_INIT,
2793 "wan hardware not installed\n");
2794 } else {
2795 res = sysfs_create_group(&tpacpi_pdev->dev.kobj,
2796 &wan_attr_group);
2797 if (res)
2798 return res;
2799 }
d6fdd1e9 2800 }
fe08bc4b 2801
d8fd94d9 2802 return (tp_features.wan)? 0 : 1;
42adb53c
JF		 2803}
2804
d3a6ade4
HMH		 2805static void wan_exit(void)
2806{
2807 sysfs_remove_group(&tpacpi_pdev->dev.kobj,
2808 &wan_attr_group);
2809}
2810
d6fdd1e9 2811static int wan_get_radiosw(void)
42adb53c
JF		 2812{
2813 int status;
2814
d6fdd1e9
HMH		 2815 if (!tp_features.wan)
2816 return -ENODEV;
42adb53c 2817
d6fdd1e9
HMH		 2818 if (!acpi_evalf(hkey_handle, &status, "GWAN", "d"))
2819 return -EIO;
2820
2821 return ((status & TP_ACPI_WANCARD_RADIOSSW) != 0);
2822}
2823
2824static int wan_set_radiosw(int radio_on)
2825{
2826 int status;
2827
2828 if (!tp_features.wan)
2829 return -ENODEV;
2830
2831 if (!acpi_evalf(hkey_handle, &status, "GWAN", "d"))
2832 return -EIO;
2833 if (radio_on)
2834 status |= TP_ACPI_WANCARD_RADIOSSW;
2835 else
2836 status &= ~TP_ACPI_WANCARD_RADIOSSW;
2837 if (!acpi_evalf(hkey_handle, NULL, "SWAN", "vd", status))
2838 return -EIO;
2839
2840 return 0;
42adb53c
JF		 2841}
2842
d3a6ade4 2843/* procfs -------------------------------------------------------------- */
42adb53c
JF		 2844static int wan_read(char *p)
2845{
2846 int len = 0;
d6fdd1e9 2847 int status = wan_get_radiosw();
42adb53c 2848
d8fd94d9 2849 if (!tp_features.wan)
42adb53c 2850 len += sprintf(p + len, "status:\t\tnot supported\n");
42adb53c 2851 else {
d6fdd1e9
HMH		 2852 len += sprintf(p + len, "status:\t\t%s\n",
2853 (status)? "enabled" : "disabled");
42adb53c
JF		 2854 len += sprintf(p + len, "commands:\tenable, disable\n");
2855 }
2856
2857 return len;
2858}
2859
2860static int wan_write(char *buf)
2861{
42adb53c 2862 char *cmd;
42adb53c 2863
d8fd94d9 2864 if (!tp_features.wan)
42adb53c
JF		 2865 return -ENODEV;
2866
2867 while ((cmd = next_cmd(&buf))) {
2868 if (strlencmp(cmd, "enable") == 0) {
d6fdd1e9 2869 wan_set_radiosw(1);
42adb53c 2870 } else if (strlencmp(cmd, "disable") == 0) {
d6fdd1e9 2871 wan_set_radiosw(0);
42adb53c
JF		 2872 } else
2873 return -EINVAL;
42adb53c
JF		 2874 }
2875
42adb53c
JF		 2876 return 0;
2877}
2878
a5763f22
HMH		 2879static struct ibm_struct wan_driver_data = {
2880 .name = "wan",
2881 .read = wan_read,
2882 .write = wan_write,
d3a6ade4 2883 .exit = wan_exit,
92641177 2884 .flags.experimental = 1,
a5763f22
HMH		 2885};
2886
56b6aeb0
HMH		 2887/*************************************************************************
2888 * Video subdriver
2889 */
2890
d7c1d17d
HMH		 2891#ifdef CONFIG_THINKPAD_ACPI_VIDEO
2892
f74a27d4
HMH		 2893enum video_access_mode {
2894 TPACPI_VIDEO_NONE = 0,
2895 TPACPI_VIDEO_570, /* 570 */
2896 TPACPI_VIDEO_770, /* 600e/x, 770e, 770x */
2897 TPACPI_VIDEO_NEW, /* all others */
2898};
2899
2900enum { /* video status flags, based on VIDEO_570 */
2901 TP_ACPI_VIDEO_S_LCD = 0x01, /* LCD output enabled */
2902 TP_ACPI_VIDEO_S_CRT = 0x02, /* CRT output enabled */
2903 TP_ACPI_VIDEO_S_DVI = 0x08, /* DVI output enabled */
2904};
2905
2906enum { /* TPACPI_VIDEO_570 constants */
2907 TP_ACPI_VIDEO_570_PHSCMD = 0x87, /* unknown magic constant :( */
2908 TP_ACPI_VIDEO_570_PHSMASK = 0x03, /* PHS bits that map to
2909 * video_status_flags */
2910 TP_ACPI_VIDEO_570_PHS2CMD = 0x8b, /* unknown magic constant :( */
2911 TP_ACPI_VIDEO_570_PHS2SET = 0x80, /* unknown magic constant :( */
2912};
2913
9a8e1738
HMH		 2914static enum video_access_mode video_supported;
2915static int video_orig_autosw;
78f81cc4 2916
f74a27d4
HMH		 2917static int video_autosw_get(void);
2918static int video_autosw_set(int enable);
2919
e0c7dfe7 2920TPACPI_HANDLE(vid2, root, "\\_SB.PCI0.AGPB.VID"); /* G41 */
56b6aeb0 2921
a5763f22 2922static int __init video_init(struct ibm_init_struct *iibm)
1da177e4 2923{
78f81cc4
BD		 2924 int ivga;
2925
fe08bc4b
HMH		 2926 vdbg_printk(TPACPI_DBG_INIT, "initializing video subdriver\n");
2927
e0c7dfe7
HMH		 2928 TPACPI_ACPIHANDLE_INIT(vid);
2929 TPACPI_ACPIHANDLE_INIT(vid2);
5fba344c 2930
78f81cc4
BD		 2931 if (vid2_handle && acpi_evalf(NULL, &ivga, "\\IVGA", "d") && ivga)
2932 /* G41, assume IVGA doesn't change */
2933 vid_handle = vid2_handle;
2934
2935 if (!vid_handle)
2936 /* video switching not supported on R30, R31 */
efa27145 2937 video_supported = TPACPI_VIDEO_NONE;
78f81cc4
BD		 2938 else if (acpi_evalf(vid_handle, &video_orig_autosw, "SWIT", "qd"))
2939 /* 570 */
efa27145 2940 video_supported = TPACPI_VIDEO_570;
78f81cc4
BD		 2941 else if (acpi_evalf(vid_handle, &video_orig_autosw, "^VADL", "qd"))
2942 /* 600e/x, 770e, 770x */
efa27145 2943 video_supported = TPACPI_VIDEO_770;
78f81cc4
BD		 2944 else
2945 /* all others */
efa27145 2946 video_supported = TPACPI_VIDEO_NEW;
1da177e4 2947
fe08bc4b
HMH		 2948 vdbg_printk(TPACPI_DBG_INIT, "video is %s, mode %d\n",
2949 str_supported(video_supported != TPACPI_VIDEO_NONE),
2950 video_supported);
2951
5fba344c 2952 return (video_supported != TPACPI_VIDEO_NONE)? 0 : 1;
1da177e4
LT		 2953}
2954
56b6aeb0
HMH		 2955static void video_exit(void)
2956{
83f34724
HMH		 2957 dbg_printk(TPACPI_DBG_EXIT,
2958 "restoring original video autoswitch mode\n");
2959 if (video_autosw_set(video_orig_autosw))
e0c7dfe7 2960 printk(TPACPI_ERR "error while trying to restore original "
83f34724 2961 "video autoswitch mode\n");
56b6aeb0
HMH		 2962}
2963
83f34724 2964static int video_outputsw_get(void)
1da177e4
LT		 2965{
2966 int status = 0;
2967 int i;
2968
83f34724
HMH		 2969 switch (video_supported) {
2970 case TPACPI_VIDEO_570:
2971 if (!acpi_evalf(NULL, &i, "\\_SB.PHS", "dd",
2972 TP_ACPI_VIDEO_570_PHSCMD))
2973 return -EIO;
2974 status = i & TP_ACPI_VIDEO_570_PHSMASK;
2975 break;
2976 case TPACPI_VIDEO_770:
2977 if (!acpi_evalf(NULL, &i, "\\VCDL", "d"))
2978 return -EIO;
2979 if (i)
2980 status |= TP_ACPI_VIDEO_S_LCD;
2981 if (!acpi_evalf(NULL, &i, "\\VCDC", "d"))
2982 return -EIO;
2983 if (i)
2984 status |= TP_ACPI_VIDEO_S_CRT;
2985 break;
2986 case TPACPI_VIDEO_NEW:
2987 if (!acpi_evalf(NULL, NULL, "\\VUPS", "vd", 1) ||
2988 !acpi_evalf(NULL, &i, "\\VCDC", "d"))
2989 return -EIO;
2990 if (i)
2991 status |= TP_ACPI_VIDEO_S_CRT;
2992
2993 if (!acpi_evalf(NULL, NULL, "\\VUPS", "vd", 0) ||
2994 !acpi_evalf(NULL, &i, "\\VCDL", "d"))
2995 return -EIO;
2996 if (i)
2997 status |= TP_ACPI_VIDEO_S_LCD;
2998 if (!acpi_evalf(NULL, &i, "\\VCDD", "d"))
2999 return -EIO;
3000 if (i)
3001 status |= TP_ACPI_VIDEO_S_DVI;
3002 break;
3003 default:
3004 return -ENOSYS;
78f81cc4
BD		 3005 }
3006
3007 return status;
3008}
1da177e4 3009
83f34724 3010static int video_outputsw_set(int status)
78f81cc4 3011{
83f34724
HMH		 3012 int autosw;
3013 int res = 0;
3014
3015 switch (video_supported) {
3016 case TPACPI_VIDEO_570:
3017 res = acpi_evalf(NULL, NULL,
3018 "\\_SB.PHS2", "vdd",
3019 TP_ACPI_VIDEO_570_PHS2CMD,
3020 status | TP_ACPI_VIDEO_570_PHS2SET);
3021 break;
3022 case TPACPI_VIDEO_770:
3023 autosw = video_autosw_get();
3024 if (autosw < 0)
3025 return autosw;
1da177e4 3026
83f34724
HMH		 3027 res = video_autosw_set(1);
3028 if (res)
3029 return res;
3030 res = acpi_evalf(vid_handle, NULL,
3031 "ASWT", "vdd", status * 0x100, 0);
3032 if (!autosw && video_autosw_set(autosw)) {
35ff8b9f
HMH		 3033 printk(TPACPI_ERR
3034 "video auto-switch left enabled due to error\n");
83f34724
HMH		 3035 return -EIO;
3036 }
3037 break;
3038 case TPACPI_VIDEO_NEW:
3039 res = acpi_evalf(NULL, NULL, "\\VUPS", "vd", 0x80) &&
35ff8b9f 3040 acpi_evalf(NULL, NULL, "\\VSDS", "vdd", status, 1);
83f34724
HMH		 3041 break;
3042 default:
3043 return -ENOSYS;
3044 }
1da177e4 3045
83f34724 3046 return (res)? 0 : -EIO;
1da177e4
LT		 3047}
3048
83f34724 3049static int video_autosw_get(void)
78f81cc4 3050{
83f34724 3051 int autosw = 0;
78f81cc4 3052
83f34724
HMH		 3053 switch (video_supported) {
3054 case TPACPI_VIDEO_570:
3055 if (!acpi_evalf(vid_handle, &autosw, "SWIT", "d"))
3056 return -EIO;
3057 break;
3058 case TPACPI_VIDEO_770:
3059 case TPACPI_VIDEO_NEW:
3060 if (!acpi_evalf(vid_handle, &autosw, "^VDEE", "d"))
3061 return -EIO;
3062 break;
3063 default:
3064 return -ENOSYS;
3065 }
78f81cc4 3066
83f34724 3067 return autosw & 1;
78f81cc4
BD		 3068}
3069
83f34724 3070static int video_autosw_set(int enable)
78f81cc4 3071{
83f34724
HMH		 3072 if (!acpi_evalf(vid_handle, NULL, "_DOS", "vd", (enable)? 1 : 0))
3073 return -EIO;
3074 return 0;
78f81cc4
BD		 3075}
3076
83f34724 3077static int video_outputsw_cycle(void)
78f81cc4 3078{
83f34724
HMH		 3079 int autosw = video_autosw_get();
3080 int res;
78f81cc4 3081
83f34724
HMH		 3082 if (autosw < 0)
3083 return autosw;
78f81cc4 3084
83f34724
HMH		 3085 switch (video_supported) {
3086 case TPACPI_VIDEO_570:
3087 res = video_autosw_set(1);
3088 if (res)
3089 return res;
3090 res = acpi_evalf(ec_handle, NULL, "_Q16", "v");
3091 break;
3092 case TPACPI_VIDEO_770:
3093 case TPACPI_VIDEO_NEW:
3094 res = video_autosw_set(1);
3095 if (res)
3096 return res;
3097 res = acpi_evalf(vid_handle, NULL, "VSWT", "v");
3098 break;
3099 default:
3100 return -ENOSYS;
3101 }
3102 if (!autosw && video_autosw_set(autosw)) {
35ff8b9f
HMH		 3103 printk(TPACPI_ERR
3104 "video auto-switch left enabled due to error\n");
83f34724 3105 return -EIO;
78f81cc4
BD		 3106 }
3107
83f34724
HMH		 3108 return (res)? 0 : -EIO;
3109}
3110
3111static int video_expand_toggle(void)
3112{
3113 switch (video_supported) {
3114 case TPACPI_VIDEO_570:
3115 return acpi_evalf(ec_handle, NULL, "_Q17", "v")?
3116 0 : -EIO;
3117 case TPACPI_VIDEO_770:
3118 return acpi_evalf(vid_handle, NULL, "VEXP", "v")?
3119 0 : -EIO;
3120 case TPACPI_VIDEO_NEW:
3121 return acpi_evalf(NULL, NULL, "\\VEXP", "v")?
3122 0 : -EIO;
3123 default:
3124 return -ENOSYS;
3125 }
3126 /* not reached */
78f81cc4
BD		 3127}
3128
56b6aeb0
HMH		 3129static int video_read(char *p)
3130{
83f34724 3131 int status, autosw;
56b6aeb0
HMH		 3132 int len = 0;
3133
83f34724 3134 if (video_supported == TPACPI_VIDEO_NONE) {
56b6aeb0
HMH		 3135 len += sprintf(p + len, "status:\t\tnot supported\n");
3136 return len;
3137 }
3138
83f34724
HMH		 3139 status = video_outputsw_get();
3140 if (status < 0)
3141 return status;
3142
3143 autosw = video_autosw_get();
3144 if (autosw < 0)
3145 return autosw;
3146
56b6aeb0
HMH		 3147 len += sprintf(p + len, "status:\t\tsupported\n");
3148 len += sprintf(p + len, "lcd:\t\t%s\n", enabled(status, 0));
3149 len += sprintf(p + len, "crt:\t\t%s\n", enabled(status, 1));
efa27145 3150 if (video_supported == TPACPI_VIDEO_NEW)
56b6aeb0
HMH		 3151 len += sprintf(p + len, "dvi:\t\t%s\n", enabled(status, 3));
3152 len += sprintf(p + len, "auto:\t\t%s\n", enabled(autosw, 0));
3153 len += sprintf(p + len, "commands:\tlcd_enable, lcd_disable\n");
3154 len += sprintf(p + len, "commands:\tcrt_enable, crt_disable\n");
efa27145 3155 if (video_supported == TPACPI_VIDEO_NEW)
56b6aeb0
HMH		 3156 len += sprintf(p + len, "commands:\tdvi_enable, dvi_disable\n");
3157 len += sprintf(p + len, "commands:\tauto_enable, auto_disable\n");
3158 len += sprintf(p + len, "commands:\tvideo_switch, expand_toggle\n");
3159
3160 return len;
3161}
3162
78f81cc4 3163static int video_write(char *buf)
1da177e4
LT		 3164{
3165 char *cmd;
3166 int enable, disable, status;
83f34724 3167 int res;
1da177e4 3168
83f34724 3169 if (video_supported == TPACPI_VIDEO_NONE)
78f81cc4
BD		 3170 return -ENODEV;
3171
83f34724
HMH		 3172 enable = 0;
3173 disable = 0;
1da177e4
LT		 3174
3175 while ((cmd = next_cmd(&buf))) {
3176 if (strlencmp(cmd, "lcd_enable") == 0) {
83f34724 3177 enable |= TP_ACPI_VIDEO_S_LCD;
1da177e4 3178 } else if (strlencmp(cmd, "lcd_disable") == 0) {
83f34724 3179 disable |= TP_ACPI_VIDEO_S_LCD;
1da177e4 3180 } else if (strlencmp(cmd, "crt_enable") == 0) {
83f34724 3181 enable |= TP_ACPI_VIDEO_S_CRT;
1da177e4 3182 } else if (strlencmp(cmd, "crt_disable") == 0) {
83f34724 3183 disable |= TP_ACPI_VIDEO_S_CRT;
efa27145 3184 } else if (video_supported == TPACPI_VIDEO_NEW &&
78f81cc4 3185 strlencmp(cmd, "dvi_enable") == 0) {
83f34724 3186 enable |= TP_ACPI_VIDEO_S_DVI;
efa27145 3187 } else if (video_supported == TPACPI_VIDEO_NEW &&
78f81cc4 3188 strlencmp(cmd, "dvi_disable") == 0) {
83f34724 3189 disable |= TP_ACPI_VIDEO_S_DVI;
1da177e4 3190 } else if (strlencmp(cmd, "auto_enable") == 0) {
83f34724
HMH		 3191 res = video_autosw_set(1);
3192 if (res)
3193 return res;
1da177e4 3194 } else if (strlencmp(cmd, "auto_disable") == 0) {
83f34724
HMH		 3195 res = video_autosw_set(0);
3196 if (res)
3197 return res;
1da177e4 3198 } else if (strlencmp(cmd, "video_switch") == 0) {
83f34724
HMH		 3199 res = video_outputsw_cycle();
3200 if (res)
3201 return res;
1da177e4 3202 } else if (strlencmp(cmd, "expand_toggle") == 0) {
83f34724
HMH		 3203 res = video_expand_toggle();
3204 if (res)
3205 return res;
1da177e4
LT		 3206 } else
3207 return -EINVAL;
3208 }
3209
3210 if (enable || disable) {
83f34724
HMH		 3211 status = video_outputsw_get();
3212 if (status < 0)
3213 return status;
3214 res = video_outputsw_set((status & ~disable) | enable);
3215 if (res)
3216 return res;
1da177e4
LT		 3217 }
3218
3219 return 0;
3220}
3221
a5763f22
HMH		 3222static struct ibm_struct video_driver_data = {
3223 .name = "video",
3224 .read = video_read,
3225 .write = video_write,
3226 .exit = video_exit,
3227};
3228
d7c1d17d
HMH		 3229#endif /* CONFIG_THINKPAD_ACPI_VIDEO */
3230
56b6aeb0
HMH		 3231/*************************************************************************
3232 * Light (thinklight) subdriver
3233 */
1da177e4 3234
e0c7dfe7
HMH		 3235TPACPI_HANDLE(lght, root, "\\LGHT"); /* A21e, A2xm/p, T20-22, X20-21 */
3236TPACPI_HANDLE(ledb, ec, "LEDB"); /* G4x */
56b6aeb0 3237
a5763f22 3238static int __init light_init(struct ibm_init_struct *iibm)
1da177e4 3239{
fe08bc4b
HMH		 3240 vdbg_printk(TPACPI_DBG_INIT, "initializing light subdriver\n");
3241
e0c7dfe7
HMH		 3242 TPACPI_ACPIHANDLE_INIT(ledb);
3243 TPACPI_ACPIHANDLE_INIT(lght);
3244 TPACPI_ACPIHANDLE_INIT(cmos);
5fba344c 3245
78f81cc4 3246 /* light not supported on 570, 600e/x, 770e, 770x, G4x, R30, R31 */
d8fd94d9 3247 tp_features.light = (cmos_handle || lght_handle) && !ledb_handle;
78f81cc4 3248
d8fd94d9 3249 if (tp_features.light)
78f81cc4
BD		 3250 /* light status not supported on
3251 570, 600e/x, 770e, 770x, G4x, R30, R31, R32, X20 */
d8fd94d9
HMH		 3252 tp_features.light_status =
3253 acpi_evalf(ec_handle, NULL, "KBLT", "qv");
1da177e4 3254
fe08bc4b 3255 vdbg_printk(TPACPI_DBG_INIT, "light is %s\n",
d8fd94d9 3256 str_supported(tp_features.light));
fe08bc4b 3257
d8fd94d9 3258 return (tp_features.light)? 0 : 1;
1da177e4
LT		 3259}
3260
78f81cc4 3261static int light_read(char *p)
1da177e4
LT		 3262{
3263 int len = 0;
3264 int status = 0;
3265
d8fd94d9 3266 if (!tp_features.light) {
78f81cc4 3267 len += sprintf(p + len, "status:\t\tnot supported\n");
d8fd94d9 3268 } else if (!tp_features.light_status) {
78f81cc4
BD		 3269 len += sprintf(p + len, "status:\t\tunknown\n");
3270 len += sprintf(p + len, "commands:\ton, off\n");
3271 } else {
1da177e4
LT		 3272 if (!acpi_evalf(ec_handle, &status, "KBLT", "d"))
3273 return -EIO;
3274 len += sprintf(p + len, "status:\t\t%s\n", onoff(status, 0));
78f81cc4
BD		 3275 len += sprintf(p + len, "commands:\ton, off\n");
3276 }
1da177e4
LT		 3277
3278 return len;
3279}
3280
78f81cc4 3281static int light_write(char *buf)
1da177e4
LT		 3282{
3283 int cmos_cmd, lght_cmd;
3284 char *cmd;
3285 int success;
78f81cc4 3286
d8fd94d9 3287 if (!tp_features.light)
78f81cc4
BD		 3288 return -ENODEV;
3289
1da177e4
LT		 3290 while ((cmd = next_cmd(&buf))) {
3291 if (strlencmp(cmd, "on") == 0) {
3292 cmos_cmd = 0x0c;
3293 lght_cmd = 1;
3294 } else if (strlencmp(cmd, "off") == 0) {
3295 cmos_cmd = 0x0d;
3296 lght_cmd = 0;
3297 } else
3298 return -EINVAL;
78f81cc4 3299
1da177e4 3300 success = cmos_handle ?
78f81cc4
BD		 3301 acpi_evalf(cmos_handle, NULL, NULL, "vd", cmos_cmd) :
3302 acpi_evalf(lght_handle, NULL, NULL, "vd", lght_cmd);
1da177e4
LT		 3303 if (!success)
3304 return -EIO;
3305 }
3306
3307 return 0;
3308}
3309
a5763f22
HMH		 3310static struct ibm_struct light_driver_data = {
3311 .name = "light",
3312 .read = light_read,
3313 .write = light_write,
3314};
3315
56b6aeb0
HMH		 3316/*************************************************************************
3317 * Dock subdriver
3318 */
1da177e4 3319
85998248 3320#ifdef CONFIG_THINKPAD_ACPI_DOCK
56b6aeb0 3321
f74a27d4
HMH		 3322static void dock_notify(struct ibm_struct *ibm, u32 event);
3323static int dock_read(char *p);
3324static int dock_write(char *buf);
3325
e0c7dfe7 3326TPACPI_HANDLE(dock, root, "\\_SB.GDCK", /* X30, X31, X40 */
56b6aeb0
HMH		 3327 "\\_SB.PCI0.DOCK", /* 600e/x,770e,770x,A2xm/p,T20-22,X20-21 */
3328 "\\_SB.PCI0.PCI1.DOCK", /* all others */
3329 "\\_SB.PCI.ISA.SLCE", /* 570 */
3330 ); /* A21e,G4x,R30,R31,R32,R40,R40e,R50e */
3331
5fba344c 3332/* don't list other alternatives as we install a notify handler on the 570 */
e0c7dfe7 3333TPACPI_HANDLE(pci, root, "\\_SB.PCI"); /* 570 */
5fba344c 3334
1ba90e3a
TR		 3335static const struct acpi_device_id ibm_pci_device_ids[] = {
3336 {PCI_ROOT_HID_STRING, 0},
3337 {"", 0},
3338};
3339
d94a7f16
HMH		 3340static struct tp_acpi_drv_struct ibm_dock_acpidriver[2] = {
3341 {
3342 .notify = dock_notify,
3343 .handle = &dock_handle,
3344 .type = ACPI_SYSTEM_NOTIFY,
3345 },
3346 {
996fba08
HMH		 3347 /* THIS ONE MUST NEVER BE USED FOR DRIVER AUTOLOADING.
3348 * We just use it to get notifications of dock hotplug
3349 * in very old thinkpads */
1ba90e3a 3350 .hid = ibm_pci_device_ids,
d94a7f16
HMH		 3351 .notify = dock_notify,
3352 .handle = &pci_handle,
3353 .type = ACPI_SYSTEM_NOTIFY,
3354 },
3355};
3356
3357static struct ibm_struct dock_driver_data[2] = {
3358 {
3359 .name = "dock",
3360 .read = dock_read,
3361 .write = dock_write,
3362 .acpi = &ibm_dock_acpidriver[0],
3363 },
3364 {
3365 .name = "dock",
3366 .acpi = &ibm_dock_acpidriver[1],
3367 },
3368};
3369
1da177e4
LT		 3370#define dock_docked() (_sta(dock_handle) & 1)
3371
a5763f22 3372static int __init dock_init(struct ibm_init_struct *iibm)
5fba344c 3373{
fe08bc4b
HMH		 3374 vdbg_printk(TPACPI_DBG_INIT, "initializing dock subdriver\n");
3375
e0c7dfe7 3376 TPACPI_ACPIHANDLE_INIT(dock);
5fba344c 3377
fe08bc4b
HMH		 3378 vdbg_printk(TPACPI_DBG_INIT, "dock is %s\n",
3379 str_supported(dock_handle != NULL));
3380
5fba344c
HMH		 3381 return (dock_handle)? 0 : 1;
3382}
3383
d94a7f16
HMH		 3384static int __init dock_init2(struct ibm_init_struct *iibm)
3385{
3386 int dock2_needed;
3387
3388 vdbg_printk(TPACPI_DBG_INIT, "initializing dock subdriver part 2\n");
3389
3390 if (dock_driver_data[0].flags.acpi_driver_registered &&
3391 dock_driver_data[0].flags.acpi_notify_installed) {
e0c7dfe7 3392 TPACPI_ACPIHANDLE_INIT(pci);
d94a7f16
HMH		 3393 dock2_needed = (pci_handle != NULL);
3394 vdbg_printk(TPACPI_DBG_INIT,
3395 "dock PCI handler for the TP 570 is %s\n",
3396 str_supported(dock2_needed));
3397 } else {
3398 vdbg_printk(TPACPI_DBG_INIT,
3399 "dock subdriver part 2 not required\n");
3400 dock2_needed = 0;
3401 }
3402
3403 return (dock2_needed)? 0 : 1;
3404}
3405
56b6aeb0
HMH		 3406static void dock_notify(struct ibm_struct *ibm, u32 event)
3407{
3408 int docked = dock_docked();
1ba90e3a
TR		 3409 int pci = ibm->acpi->hid && ibm->acpi->device &&
3410 acpi_match_device_ids(ibm->acpi->device, ibm_pci_device_ids);
962ce8ca 3411 int data;
56b6aeb0
HMH		 3412
3413 if (event == 1 && !pci) /* 570 */
962ce8ca 3414 data = 1; /* button */
56b6aeb0 3415 else if (event == 1 && pci) /* 570 */
962ce8ca 3416 data = 3; /* dock */
56b6aeb0 3417 else if (event == 3 && docked)
962ce8ca 3418 data = 1; /* button */
56b6aeb0 3419 else if (event == 3 && !docked)
962ce8ca 3420 data = 2; /* undock */
56b6aeb0 3421 else if (event == 0 && docked)
962ce8ca 3422 data = 3; /* dock */
56b6aeb0 3423 else {
e0c7dfe7 3424 printk(TPACPI_ERR "unknown dock event %d, status %d\n",
56b6aeb0 3425 event, _sta(dock_handle));
962ce8ca 3426 data = 0; /* unknown */
56b6aeb0 3427 }
14e04fb3 3428 acpi_bus_generate_proc_event(ibm->acpi->device, event, data);
962ce8ca
ZR		 3429 acpi_bus_generate_netlink_event(ibm->acpi->device->pnp.device_class,
3430 ibm->acpi->device->dev.bus_id,
3431 event, data);
56b6aeb0
HMH		 3432}
3433
78f81cc4 3434static int dock_read(char *p)
1da177e4
LT		 3435{
3436 int len = 0;
3437 int docked = dock_docked();
3438
3439 if (!dock_handle)
3440 len += sprintf(p + len, "status:\t\tnot supported\n");
3441 else if (!docked)
3442 len += sprintf(p + len, "status:\t\tundocked\n");
3443 else {
3444 len += sprintf(p + len, "status:\t\tdocked\n");
3445 len += sprintf(p + len, "commands:\tdock, undock\n");
3446 }
3447
3448 return len;
3449}
3450
78f81cc4 3451static int dock_write(char *buf)
1da177e4
LT		 3452{
3453 char *cmd;
3454
3455 if (!dock_docked())
78f81cc4 3456 return -ENODEV;
1da177e4
LT		 3457
3458 while ((cmd = next_cmd(&buf))) {
3459 if (strlencmp(cmd, "undock") == 0) {
78f81cc4
BD		 3460 if (!acpi_evalf(dock_handle, NULL, "_DCK", "vd", 0) ||
3461 !acpi_evalf(dock_handle, NULL, "_EJ0", "vd", 1))
56b6aeb0
HMH		 3462 return -EIO;
3463 } else if (strlencmp(cmd, "dock") == 0) {
3464 if (!acpi_evalf(dock_handle, NULL, "_DCK", "vd", 1))
3465 return -EIO;
3466 } else
3467 return -EINVAL;
1da177e4 3468 }
56b6aeb0
HMH		 3469
3470 return 0;
1da177e4 3471}
56b6aeb0 3472
85998248 3473#endif /* CONFIG_THINKPAD_ACPI_DOCK */
56b6aeb0
HMH		 3474
3475/*************************************************************************
3476 * Bay subdriver
3477 */
1da177e4 3478
85998248 3479#ifdef CONFIG_THINKPAD_ACPI_BAY
f74a27d4 3480
e0c7dfe7 3481TPACPI_HANDLE(bay, root, "\\_SB.PCI.IDE.SECN.MAST", /* 570 */
56b6aeb0
HMH		 3482 "\\_SB.PCI0.IDE0.IDES.IDSM", /* 600e/x, 770e, 770x */
3483 "\\_SB.PCI0.SATA.SCND.MSTR", /* T60, X60, Z60 */
3484 "\\_SB.PCI0.IDE0.SCND.MSTR", /* all others */
3485 ); /* A21e, R30, R31 */
e0c7dfe7 3486TPACPI_HANDLE(bay_ej, bay, "_EJ3", /* 600e/x, A2xm/p, A3x */
56b6aeb0
HMH		 3487 "_EJ0", /* all others */
3488 ); /* 570,A21e,G4x,R30,R31,R32,R40e,R50e */
e0c7dfe7 3489TPACPI_HANDLE(bay2, root, "\\_SB.PCI0.IDE0.PRIM.SLAV", /* A3x, R32 */
56b6aeb0
HMH		 3490 "\\_SB.PCI0.IDE0.IDEP.IDPS", /* 600e/x, 770e, 770x */
3491 ); /* all others */
e0c7dfe7 3492TPACPI_HANDLE(bay2_ej, bay2, "_EJ3", /* 600e/x, 770e, A3x */
56b6aeb0
HMH		 3493 "_EJ0", /* 770x */
3494 ); /* all others */
3495
a5763f22 3496static int __init bay_init(struct ibm_init_struct *iibm)
1da177e4 3497{
fe08bc4b
HMH		 3498 vdbg_printk(TPACPI_DBG_INIT, "initializing bay subdriver\n");
3499
e0c7dfe7 3500 TPACPI_ACPIHANDLE_INIT(bay);
5fba344c 3501 if (bay_handle)
e0c7dfe7
HMH		 3502 TPACPI_ACPIHANDLE_INIT(bay_ej);
3503 TPACPI_ACPIHANDLE_INIT(bay2);
5fba344c 3504 if (bay2_handle)
e0c7dfe7 3505 TPACPI_ACPIHANDLE_INIT(bay2_ej);
5fba344c 3506
d8fd94d9
HMH		 3507 tp_features.bay_status = bay_handle &&
3508 acpi_evalf(bay_handle, NULL, "_STA", "qv");
3509 tp_features.bay_status2 = bay2_handle &&
3510 acpi_evalf(bay2_handle, NULL, "_STA", "qv");
78f81cc4 3511
d8fd94d9
HMH		 3512 tp_features.bay_eject = bay_handle && bay_ej_handle &&
3513 (strlencmp(bay_ej_path, "_EJ0") == 0 || experimental);
3514 tp_features.bay_eject2 = bay2_handle && bay2_ej_handle &&
3515 (strlencmp(bay2_ej_path, "_EJ0") == 0 || experimental);
1da177e4 3516
fe08bc4b
HMH		 3517 vdbg_printk(TPACPI_DBG_INIT,
3518 "bay 1: status %s, eject %s; bay 2: status %s, eject %s\n",
d8fd94d9
HMH		 3519 str_supported(tp_features.bay_status),
3520 str_supported(tp_features.bay_eject),
3521 str_supported(tp_features.bay_status2),
3522 str_supported(tp_features.bay_eject2));
fe08bc4b 3523
d8fd94d9
HMH		 3524 return (tp_features.bay_status || tp_features.bay_eject ||
3525 tp_features.bay_status2 || tp_features.bay_eject2)? 0 : 1;
1da177e4
LT		 3526}
3527
56b6aeb0
HMH		 3528static void bay_notify(struct ibm_struct *ibm, u32 event)
3529{
14e04fb3 3530 acpi_bus_generate_proc_event(ibm->acpi->device, event, 0);
962ce8ca
ZR		 3531 acpi_bus_generate_netlink_event(ibm->acpi->device->pnp.device_class,
3532 ibm->acpi->device->dev.bus_id,
3533 event, 0);
56b6aeb0
HMH		 3534}
3535
78f81cc4
BD		 3536#define bay_occupied(b) (_sta(b##_handle) & 1)
3537
3538static int bay_read(char *p)
1da177e4
LT		 3539{
3540 int len = 0;
78f81cc4
BD		 3541 int occupied = bay_occupied(bay);
3542 int occupied2 = bay_occupied(bay2);
3543 int eject, eject2;
3544
d8fd94d9
HMH		 3545 len += sprintf(p + len, "status:\t\t%s\n",
3546 tp_features.bay_status ?
3547 (occupied ? "occupied" : "unoccupied") :
3548 "not supported");
3549 if (tp_features.bay_status2)
78f81cc4
BD		 3550 len += sprintf(p + len, "status2:\t%s\n", occupied2 ?
3551 "occupied" : "unoccupied");
3552
d8fd94d9
HMH		 3553 eject = tp_features.bay_eject && occupied;
3554 eject2 = tp_features.bay_eject2 && occupied2;
78f81cc4
BD		 3555
3556 if (eject && eject2)
3557 len += sprintf(p + len, "commands:\teject, eject2\n");
3558 else if (eject)
1da177e4 3559 len += sprintf(p + len, "commands:\teject\n");
78f81cc4
BD		 3560 else if (eject2)
3561 len += sprintf(p + len, "commands:\teject2\n");
1da177e4
LT		 3562
3563 return len;
3564}
3565
78f81cc4 3566static int bay_write(char *buf)
1da177e4
LT		 3567{
3568 char *cmd;
3569
d8fd94d9 3570 if (!tp_features.bay_eject && !tp_features.bay_eject2)
78f81cc4
BD		 3571 return -ENODEV;
3572
1da177e4 3573 while ((cmd = next_cmd(&buf))) {
d8fd94d9 3574 if (tp_features.bay_eject && strlencmp(cmd, "eject") == 0) {
78f81cc4
BD		 3575 if (!acpi_evalf(bay_ej_handle, NULL, NULL, "vd", 1))
3576 return -EIO;
d8fd94d9 3577 } else if (tp_features.bay_eject2 &&
78f81cc4
BD		 3578 strlencmp(cmd, "eject2") == 0) {
3579 if (!acpi_evalf(bay2_ej_handle, NULL, NULL, "vd", 1))
1da177e4
LT		 3580 return -EIO;
3581 } else
3582 return -EINVAL;
3583 }
3584
3585 return 0;
78f81cc4 3586}
a5763f22 3587
8d376cd6
HMH		 3588static struct tp_acpi_drv_struct ibm_bay_acpidriver = {
3589 .notify = bay_notify,
3590 .handle = &bay_handle,
3591 .type = ACPI_SYSTEM_NOTIFY,
3592};
3593
a5763f22
HMH		 3594static struct ibm_struct bay_driver_data = {
3595 .name = "bay",
3596 .read = bay_read,
3597 .write = bay_write,
8d376cd6 3598 .acpi = &ibm_bay_acpidriver,
a5763f22
HMH		 3599};
3600
85998248 3601#endif /* CONFIG_THINKPAD_ACPI_BAY */
1da177e4 3602
56b6aeb0
HMH		 3603/*************************************************************************
3604 * CMOS subdriver
3605 */
3606
b616004c
HMH		 3607/* sysfs cmos_command -------------------------------------------------- */
3608static ssize_t cmos_command_store(struct device *dev,
3609 struct device_attribute *attr,
3610 const char *buf, size_t count)
3611{
3612 unsigned long cmos_cmd;
3613 int res;
3614
3615 if (parse_strtoul(buf, 21, &cmos_cmd))
3616 return -EINVAL;
3617
3618 res = issue_thinkpad_cmos_command(cmos_cmd);
3619 return (res)? res : count;
3620}
3621
3622static struct device_attribute dev_attr_cmos_command =
3623 __ATTR(cmos_command, S_IWUSR, NULL, cmos_command_store);
3624
3625/* --------------------------------------------------------------------- */
3626
a5763f22 3627static int __init cmos_init(struct ibm_init_struct *iibm)
5fba344c 3628{
b616004c
HMH		 3629 int res;
3630
fe08bc4b
HMH		 3631 vdbg_printk(TPACPI_DBG_INIT,
3632 "initializing cmos commands subdriver\n");
3633
e0c7dfe7 3634 TPACPI_ACPIHANDLE_INIT(cmos);
5fba344c 3635
fe08bc4b
HMH		 3636 vdbg_printk(TPACPI_DBG_INIT, "cmos commands are %s\n",
3637 str_supported(cmos_handle != NULL));
b616004c
HMH		 3638
3639 res = device_create_file(&tpacpi_pdev->dev, &dev_attr_cmos_command);
3640 if (res)
3641 return res;
3642
5fba344c
HMH		 3643 return (cmos_handle)? 0 : 1;
3644}
3645
b616004c
HMH		 3646static void cmos_exit(void)
3647{
3648 device_remove_file(&tpacpi_pdev->dev, &dev_attr_cmos_command);
3649}
3650
78f81cc4 3651static int cmos_read(char *p)
1da177e4
LT		 3652{
3653 int len = 0;
3654
78f81cc4
BD		 3655 /* cmos not supported on 570, 600e/x, 770e, 770x, A21e, A2xm/p,
3656 R30, R31, T20-22, X20-21 */
1da177e4
LT		 3657 if (!cmos_handle)
3658 len += sprintf(p + len, "status:\t\tnot supported\n");
3659 else {
3660 len += sprintf(p + len, "status:\t\tsupported\n");
78f81cc4 3661 len += sprintf(p + len, "commands:\t<cmd> (<cmd> is 0-21)\n");
1da177e4
LT		 3662 }
3663
3664 return len;
3665}
3666
78f81cc4 3667static int cmos_write(char *buf)
1da177e4
LT		 3668{
3669 char *cmd;
c9bea99c 3670 int cmos_cmd, res;
1da177e4
LT		 3671
3672 while ((cmd = next_cmd(&buf))) {
78f81cc4
BD		 3673 if (sscanf(cmd, "%u", &cmos_cmd) == 1 &&
3674 cmos_cmd >= 0 && cmos_cmd <= 21) {
1da177e4
LT		 3675 /* cmos_cmd set */
3676 } else
3677 return -EINVAL;
3678
c9bea99c
HMH		 3679 res = issue_thinkpad_cmos_command(cmos_cmd);
3680 if (res)
3681 return res;
1da177e4
LT		 3682 }
3683
3684 return 0;
78f81cc4
BD		 3685}
3686
a5763f22
HMH		 3687static struct ibm_struct cmos_driver_data = {
3688 .name = "cmos",
3689 .read = cmos_read,
3690 .write = cmos_write,
b616004c 3691 .exit = cmos_exit,
a5763f22 3692};
56b6aeb0
HMH		 3693
3694/*************************************************************************
3695 * LED subdriver
3696 */
3697
f74a27d4
HMH		 3698enum led_access_mode {
3699 TPACPI_LED_NONE = 0,
3700 TPACPI_LED_570, /* 570 */
3701 TPACPI_LED_OLD, /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20-21 */
3702 TPACPI_LED_NEW, /* all others */
3703};
3704
3705enum { /* For TPACPI_LED_OLD */
3706 TPACPI_LED_EC_HLCL = 0x0c, /* EC reg to get led to power on */
3707 TPACPI_LED_EC_HLBL = 0x0d, /* EC reg to blink a lit led */
3708 TPACPI_LED_EC_HLMS = 0x0e, /* EC reg to select led to command */
3709};
3710
9a8e1738 3711static enum led_access_mode led_supported;
78f81cc4 3712
e0c7dfe7 3713TPACPI_HANDLE(led, ec, "SLED", /* 570 */
35ff8b9f
HMH		 3714 "SYSL", /* 600e/x, 770e, 770x, A21e, A2xm/p, */
3715 /* T20-22, X20-21 */
56b6aeb0
HMH		 3716 "LED", /* all others */
3717 ); /* R30, R31 */
3718
a5763f22 3719static int __init led_init(struct ibm_init_struct *iibm)
78f81cc4 3720{
fe08bc4b
HMH		 3721 vdbg_printk(TPACPI_DBG_INIT, "initializing LED subdriver\n");
3722
e0c7dfe7 3723 TPACPI_ACPIHANDLE_INIT(led);
5fba344c 3724
78f81cc4
BD		 3725 if (!led_handle)
3726 /* led not supported on R30, R31 */
efa27145 3727 led_supported = TPACPI_LED_NONE;
78f81cc4
BD		 3728 else if (strlencmp(led_path, "SLED") == 0)
3729 /* 570 */
efa27145 3730 led_supported = TPACPI_LED_570;
78f81cc4
BD		 3731 else if (strlencmp(led_path, "SYSL") == 0)
3732 /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20-21 */
efa27145 3733 led_supported = TPACPI_LED_OLD;
78f81cc4
BD		 3734 else
3735 /* all others */
efa27145 3736 led_supported = TPACPI_LED_NEW;
78f81cc4 3737
fe08bc4b
HMH		 3738 vdbg_printk(TPACPI_DBG_INIT, "LED commands are %s, mode %d\n",
3739 str_supported(led_supported), led_supported);
3740
5fba344c 3741 return (led_supported != TPACPI_LED_NONE)? 0 : 1;
78f81cc4
BD		 3742}
3743
3744#define led_status(s) ((s) == 0 ? "off" : ((s) == 1 ? "on" : "blinking"))
3745
3746static int led_read(char *p)
1da177e4
LT		 3747{
3748 int len = 0;
3749
78f81cc4
BD		 3750 if (!led_supported) {
3751 len += sprintf(p + len, "status:\t\tnot supported\n");
3752 return len;
3753 }
3754 len += sprintf(p + len, "status:\t\tsupported\n");
3755
efa27145 3756 if (led_supported == TPACPI_LED_570) {
78f81cc4
BD		 3757 /* 570 */
3758 int i, status;
3759 for (i = 0; i < 8; i++) {
3760 if (!acpi_evalf(ec_handle,
3761 &status, "GLED", "dd", 1 << i))
3762 return -EIO;
3763 len += sprintf(p + len, "%d:\t\t%s\n",
3764 i, led_status(status));
3765 }
3766 }
3767
1da177e4 3768 len += sprintf(p + len, "commands:\t"
78f81cc4 3769 "<led> on, <led> off, <led> blink (<led> is 0-7)\n");
1da177e4
LT		 3770
3771 return len;
3772}
3773
78f81cc4
BD		 3774/* off, on, blink */
3775static const int led_sled_arg1[] = { 0, 1, 3 };
3776static const int led_exp_hlbl[] = { 0, 0, 1 }; /* led# * */
3777static const int led_exp_hlcl[] = { 0, 1, 1 }; /* led# * */
3778static const int led_led_arg1[] = { 0, 0x80, 0xc0 };
3779
78f81cc4 3780static int led_write(char *buf)
1da177e4
LT		 3781{
3782 char *cmd;
78f81cc4
BD		 3783 int led, ind, ret;
3784
3785 if (!led_supported)
3786 return -ENODEV;
1da177e4
LT		 3787
3788 while ((cmd = next_cmd(&buf))) {
78f81cc4 3789 if (sscanf(cmd, "%d", &led) != 1 || led < 0 || led > 7)
1da177e4
LT		 3790 return -EINVAL;
3791
78f81cc4
BD		 3792 if (strstr(cmd, "off")) {
3793 ind = 0;
1da177e4 3794 } else if (strstr(cmd, "on")) {
78f81cc4
BD		 3795 ind = 1;
3796 } else if (strstr(cmd, "blink")) {
3797 ind = 2;
1da177e4
LT		 3798 } else
3799 return -EINVAL;
78f81cc4 3800
efa27145 3801 if (led_supported == TPACPI_LED_570) {
78f81cc4
BD		 3802 /* 570 */
3803 led = 1 << led;
1da177e4 3804 if (!acpi_evalf(led_handle, NULL, NULL, "vdd",
78f81cc4 3805 led, led_sled_arg1[ind]))
1da177e4 3806 return -EIO;
efa27145 3807 } else if (led_supported == TPACPI_LED_OLD) {
78f81cc4
BD		 3808 /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20 */
3809 led = 1 << led;
efa27145 3810 ret = ec_write(TPACPI_LED_EC_HLMS, led);
78f81cc4 3811 if (ret >= 0)
35ff8b9f
HMH		 3812 ret = ec_write(TPACPI_LED_EC_HLBL,
3813 led * led_exp_hlbl[ind]);
78f81cc4 3814 if (ret >= 0)
35ff8b9f
HMH		 3815 ret = ec_write(TPACPI_LED_EC_HLCL,
3816 led * led_exp_hlcl[ind]);
78f81cc4
BD		 3817 if (ret < 0)
3818 return ret;
3819 } else {
3820 /* all others */
3821 if (!acpi_evalf(led_handle, NULL, NULL, "vdd",
3822 led, led_led_arg1[ind]))
1da177e4 3823 return -EIO;
78f81cc4
BD		 3824 }
3825 }
3826
3827 return 0;
3828}
3829
a5763f22
HMH		 3830static struct ibm_struct led_driver_data = {
3831 .name = "led",
3832 .read = led_read,
3833 .write = led_write,
3834};
3835
56b6aeb0
HMH		 3836/*************************************************************************
3837 * Beep subdriver
3838 */
3839
e0c7dfe7 3840TPACPI_HANDLE(beep, ec, "BEEP"); /* all except R30, R31 */
56b6aeb0 3841
a5763f22 3842static int __init beep_init(struct ibm_init_struct *iibm)
5fba344c 3843{
fe08bc4b
HMH		 3844 vdbg_printk(TPACPI_DBG_INIT, "initializing beep subdriver\n");
3845
e0c7dfe7 3846 TPACPI_ACPIHANDLE_INIT(beep);
5fba344c 3847
fe08bc4b
HMH		 3848 vdbg_printk(TPACPI_DBG_INIT, "beep is %s\n",
3849 str_supported(beep_handle != NULL));
3850
5fba344c
HMH		 3851 return (beep_handle)? 0 : 1;
3852}
3853
78f81cc4
BD		 3854static int beep_read(char *p)
3855{
3856 int len = 0;
3857
3858 if (!beep_handle)
3859 len += sprintf(p + len, "status:\t\tnot supported\n");
3860 else {
3861 len += sprintf(p + len, "status:\t\tsupported\n");
3862 len += sprintf(p + len, "commands:\t<cmd> (<cmd> is 0-17)\n");
3863 }
3864
3865 return len;
3866}
3867
3868static int beep_write(char *buf)
3869{
3870 char *cmd;
3871 int beep_cmd;
3872
3873 if (!beep_handle)
3874 return -ENODEV;
3875
3876 while ((cmd = next_cmd(&buf))) {
3877 if (sscanf(cmd, "%u", &beep_cmd) == 1 &&
3878 beep_cmd >= 0 && beep_cmd <= 17) {
3879 /* beep_cmd set */
3880 } else
3881 return -EINVAL;
3882 if (!acpi_evalf(beep_handle, NULL, NULL, "vdd", beep_cmd, 0))
3883 return -EIO;
3884 }
3885
3886 return 0;
3887}
3888
a5763f22
HMH		 3889static struct ibm_struct beep_driver_data = {
3890 .name = "beep",
3891 .read = beep_read,
3892 .write = beep_write,
3893};
3894
56b6aeb0
HMH		 3895/*************************************************************************
3896 * Thermal subdriver
3897 */
78f81cc4 3898
f74a27d4
HMH		 3899enum thermal_access_mode {
3900 TPACPI_THERMAL_NONE = 0, /* No thermal support */
3901 TPACPI_THERMAL_ACPI_TMP07, /* Use ACPI TMP0-7 */
3902 TPACPI_THERMAL_ACPI_UPDT, /* Use ACPI TMP0-7 with UPDT */
3903 TPACPI_THERMAL_TPEC_8, /* Use ACPI EC regs, 8 sensors */
3904 TPACPI_THERMAL_TPEC_16, /* Use ACPI EC regs, 16 sensors */
3905};
3906
3907enum { /* TPACPI_THERMAL_TPEC_* */
3908 TP_EC_THERMAL_TMP0 = 0x78, /* ACPI EC regs TMP 0..7 */
3909 TP_EC_THERMAL_TMP8 = 0xC0, /* ACPI EC regs TMP 8..15 */
3910 TP_EC_THERMAL_TMP_NA = -128, /* ACPI EC sensor not available */
3911};
3912
3913#define TPACPI_MAX_THERMAL_SENSORS 16 /* Max thermal sensors supported */
3914struct ibm_thermal_sensors_struct {
3915 s32 temp[TPACPI_MAX_THERMAL_SENSORS];
3916};
3917
a26f878a 3918static enum thermal_access_mode thermal_read_mode;
78f81cc4 3919
b21a15f6
HMH		 3920/* idx is zero-based */
3921static int thermal_get_sensor(int idx, s32 *value)
3922{
3923 int t;
3924 s8 tmp;
3925 char tmpi[5];
3926
3927 t = TP_EC_THERMAL_TMP0;
3928
3929 switch (thermal_read_mode) {
3930#if TPACPI_MAX_THERMAL_SENSORS >= 16
3931 case TPACPI_THERMAL_TPEC_16:
3932 if (idx >= 8 && idx <= 15) {
3933 t = TP_EC_THERMAL_TMP8;
3934 idx -= 8;
3935 }
3936 /* fallthrough */
3937#endif
3938 case TPACPI_THERMAL_TPEC_8:
3939 if (idx <= 7) {
3940 if (!acpi_ec_read(t + idx, &tmp))
3941 return -EIO;
3942 *value = tmp * 1000;
3943 return 0;
3944 }
3945 break;
3946
3947 case TPACPI_THERMAL_ACPI_UPDT:
3948 if (idx <= 7) {
3949 snprintf(tmpi, sizeof(tmpi), "TMP%c", '0' + idx);
3950 if (!acpi_evalf(ec_handle, NULL, "UPDT", "v"))
3951 return -EIO;
3952 if (!acpi_evalf(ec_handle, &t, tmpi, "d"))
3953 return -EIO;
3954 *value = (t - 2732) * 100;
3955 return 0;
3956 }
3957 break;
3958
3959 case TPACPI_THERMAL_ACPI_TMP07:
3960 if (idx <= 7) {
3961 snprintf(tmpi, sizeof(tmpi), "TMP%c", '0' + idx);
3962 if (!acpi_evalf(ec_handle, &t, tmpi, "d"))
3963 return -EIO;
3964 if (t > 127 || t < -127)
3965 t = TP_EC_THERMAL_TMP_NA;
3966 *value = t * 1000;
3967 return 0;
3968 }
3969 break;
3970
3971 case TPACPI_THERMAL_NONE:
3972 default:
3973 return -ENOSYS;
3974 }
3975
3976 return -EINVAL;
3977}
3978
3979static int thermal_get_sensors(struct ibm_thermal_sensors_struct *s)
3980{
3981 int res, i;
3982 int n;
3983
3984 n = 8;
3985 i = 0;
3986
3987 if (!s)
3988 return -EINVAL;
3989
3990 if (thermal_read_mode == TPACPI_THERMAL_TPEC_16)
3991 n = 16;
3992
35ff8b9f 3993 for (i = 0 ; i < n; i++) {
b21a15f6
HMH		 3994 res = thermal_get_sensor(i, &s->temp[i]);
3995 if (res)
3996 return res;
3997 }
3998
3999 return n;
4000}
f74a27d4 4001
2c37aa4e
HMH		 4002/* sysfs temp##_input -------------------------------------------------- */
4003
4004static ssize_t thermal_temp_input_show(struct device *dev,
4005 struct device_attribute *attr,
4006 char *buf)
4007{
4008 struct sensor_device_attribute *sensor_attr =
4009 to_sensor_dev_attr(attr);
4010 int idx = sensor_attr->index;
4011 s32 value;
4012 int res;
4013
4014 res = thermal_get_sensor(idx, &value);
4015 if (res)
4016 return res;
4017 if (value == TP_EC_THERMAL_TMP_NA * 1000)
4018 return -ENXIO;
4019
4020 return snprintf(buf, PAGE_SIZE, "%d\n", value);
4021}
4022
4023#define THERMAL_SENSOR_ATTR_TEMP(_idxA, _idxB) \
35ff8b9f
HMH		 4024 SENSOR_ATTR(temp##_idxA##_input, S_IRUGO, \
4025 thermal_temp_input_show, NULL, _idxB)
2c37aa4e
HMH		 4026
4027static struct sensor_device_attribute sensor_dev_attr_thermal_temp_input[] = {
4028 THERMAL_SENSOR_ATTR_TEMP(1, 0),
4029 THERMAL_SENSOR_ATTR_TEMP(2, 1),
4030 THERMAL_SENSOR_ATTR_TEMP(3, 2),
4031 THERMAL_SENSOR_ATTR_TEMP(4, 3),
4032 THERMAL_SENSOR_ATTR_TEMP(5, 4),
4033 THERMAL_SENSOR_ATTR_TEMP(6, 5),
4034 THERMAL_SENSOR_ATTR_TEMP(7, 6),
4035 THERMAL_SENSOR_ATTR_TEMP(8, 7),
4036 THERMAL_SENSOR_ATTR_TEMP(9, 8),
4037 THERMAL_SENSOR_ATTR_TEMP(10, 9),
4038 THERMAL_SENSOR_ATTR_TEMP(11, 10),
4039 THERMAL_SENSOR_ATTR_TEMP(12, 11),
4040 THERMAL_SENSOR_ATTR_TEMP(13, 12),
4041 THERMAL_SENSOR_ATTR_TEMP(14, 13),
4042 THERMAL_SENSOR_ATTR_TEMP(15, 14),
4043 THERMAL_SENSOR_ATTR_TEMP(16, 15),
4044};
4045
4046#define THERMAL_ATTRS(X) \
4047 &sensor_dev_attr_thermal_temp_input[X].dev_attr.attr
4048
4049static struct attribute *thermal_temp_input_attr[] = {
4050 THERMAL_ATTRS(8),
4051 THERMAL_ATTRS(9),
4052 THERMAL_ATTRS(10),
4053 THERMAL_ATTRS(11),
4054 THERMAL_ATTRS(12),
4055 THERMAL_ATTRS(13),
4056 THERMAL_ATTRS(14),
4057 THERMAL_ATTRS(15),
4058 THERMAL_ATTRS(0),
4059 THERMAL_ATTRS(1),
4060 THERMAL_ATTRS(2),
4061 THERMAL_ATTRS(3),
4062 THERMAL_ATTRS(4),
4063 THERMAL_ATTRS(5),
4064 THERMAL_ATTRS(6),
4065 THERMAL_ATTRS(7),
4066 NULL
4067};
4068
4069static const struct attribute_group thermal_temp_input16_group = {
4070 .attrs = thermal_temp_input_attr
4071};
4072
4073static const struct attribute_group thermal_temp_input8_group = {
4074 .attrs = &thermal_temp_input_attr[8]
4075};
4076
4077#undef THERMAL_SENSOR_ATTR_TEMP
4078#undef THERMAL_ATTRS
4079
4080/* --------------------------------------------------------------------- */
4081
a5763f22 4082static int __init thermal_init(struct ibm_init_struct *iibm)
78f81cc4 4083{
60eb0b35
HMH		 4084 u8 t, ta1, ta2;
4085 int i;
5fba344c 4086 int acpi_tmp7;
2c37aa4e 4087 int res;
5fba344c 4088
fe08bc4b
HMH		 4089 vdbg_printk(TPACPI_DBG_INIT, "initializing thermal subdriver\n");
4090
5fba344c 4091 acpi_tmp7 = acpi_evalf(ec_handle, NULL, "TMP7", "qv");
60eb0b35 4092
3d6f99ca 4093 if (thinkpad_id.ec_model) {
60eb0b35
HMH		 4094 /*
4095 * Direct EC access mode: sensors at registers
4096 * 0x78-0x7F, 0xC0-0xC7. Registers return 0x00 for
4097 * non-implemented, thermal sensors return 0x80 when
4098 * not available
4099 */
78f81cc4 4100
60eb0b35
HMH		 4101 ta1 = ta2 = 0;
4102 for (i = 0; i < 8; i++) {
04cc862c 4103 if (acpi_ec_read(TP_EC_THERMAL_TMP0 + i, &t)) {
60eb0b35
HMH		 4104 ta1 |= t;
4105 } else {
4106 ta1 = 0;
4107 break;
4108 }
04cc862c 4109 if (acpi_ec_read(TP_EC_THERMAL_TMP8 + i, &t)) {
60eb0b35
HMH		 4110 ta2 |= t;
4111 } else {
4112 ta1 = 0;
4113 break;
4114 }
4115 }
4116 if (ta1 == 0) {
4117 /* This is sheer paranoia, but we handle it anyway */
4118 if (acpi_tmp7) {
e0c7dfe7 4119 printk(TPACPI_ERR
60eb0b35 4120 "ThinkPad ACPI EC access misbehaving, "
35ff8b9f
HMH		 4121 "falling back to ACPI TMPx access "
4122 "mode\n");
efa27145 4123 thermal_read_mode = TPACPI_THERMAL_ACPI_TMP07;
60eb0b35 4124 } else {
e0c7dfe7 4125 printk(TPACPI_ERR
60eb0b35
HMH		 4126 "ThinkPad ACPI EC access misbehaving, "
4127 "disabling thermal sensors access\n");
efa27145 4128 thermal_read_mode = TPACPI_THERMAL_NONE;
60eb0b35
HMH		 4129 }
4130 } else {
4131 thermal_read_mode =
4132 (ta2 != 0) ?
efa27145 4133 TPACPI_THERMAL_TPEC_16 : TPACPI_THERMAL_TPEC_8;
60eb0b35
HMH		 4134 }
4135 } else if (acpi_tmp7) {
a26f878a
HMH		 4136 if (acpi_evalf(ec_handle, NULL, "UPDT", "qv")) {
4137 /* 600e/x, 770e, 770x */
efa27145 4138 thermal_read_mode = TPACPI_THERMAL_ACPI_UPDT;
a26f878a
HMH		 4139 } else {
4140 /* Standard ACPI TMPx access, max 8 sensors */
efa27145 4141 thermal_read_mode = TPACPI_THERMAL_ACPI_TMP07;
a26f878a
HMH		 4142 }
4143 } else {
4144 /* temperatures not supported on 570, G4x, R30, R31, R32 */
efa27145 4145 thermal_read_mode = TPACPI_THERMAL_NONE;
a26f878a 4146 }
78f81cc4 4147
fe08bc4b
HMH		 4148 vdbg_printk(TPACPI_DBG_INIT, "thermal is %s, mode %d\n",
4149 str_supported(thermal_read_mode != TPACPI_THERMAL_NONE),
4150 thermal_read_mode);
4151
35ff8b9f 4152 switch (thermal_read_mode) {
2c37aa4e 4153 case TPACPI_THERMAL_TPEC_16:
7fd40029 4154 res = sysfs_create_group(&tpacpi_sensors_pdev->dev.kobj,
2c37aa4e
HMH		 4155 &thermal_temp_input16_group);
4156 if (res)
4157 return res;
4158 break;
4159 case TPACPI_THERMAL_TPEC_8:
4160 case TPACPI_THERMAL_ACPI_TMP07:
4161 case TPACPI_THERMAL_ACPI_UPDT:
7fd40029 4162 res = sysfs_create_group(&tpacpi_sensors_pdev->dev.kobj,
2c37aa4e
HMH		 4163 &thermal_temp_input8_group);
4164 if (res)
4165 return res;
4166 break;
4167 case TPACPI_THERMAL_NONE:
4168 default:
4169 return 1;
4170 }
4171
4172 return 0;
4173}
4174
4175static void thermal_exit(void)
4176{
35ff8b9f 4177 switch (thermal_read_mode) {
2c37aa4e 4178 case TPACPI_THERMAL_TPEC_16:
7fd40029 4179 sysfs_remove_group(&tpacpi_sensors_pdev->dev.kobj,
2c37aa4e
HMH		 4180 &thermal_temp_input16_group);
4181 break;
4182 case TPACPI_THERMAL_TPEC_8:
4183 case TPACPI_THERMAL_ACPI_TMP07:
4184 case TPACPI_THERMAL_ACPI_UPDT:
7fd40029 4185 sysfs_remove_group(&tpacpi_sensors_pdev->dev.kobj,
2c37aa4e
HMH		 4186 &thermal_temp_input16_group);
4187 break;
4188 case TPACPI_THERMAL_NONE:
4189 default:
4190 break;
4191 }
78f81cc4
BD		 4192}
4193
a26f878a
HMH		 4194static int thermal_read(char *p)
4195{
4196 int len = 0;
4197 int n, i;
4198 struct ibm_thermal_sensors_struct t;
4199
4200 n = thermal_get_sensors(&t);
4201 if (unlikely(n < 0))
4202 return n;
4203
4204 len += sprintf(p + len, "temperatures:\t");
4205
4206 if (n > 0) {
4207 for (i = 0; i < (n - 1); i++)
4208 len += sprintf(p + len, "%d ", t.temp[i] / 1000);
4209 len += sprintf(p + len, "%d\n", t.temp[i] / 1000);
4210 } else
4211 len += sprintf(p + len, "not supported\n");
78f81cc4
BD		 4212
4213 return len;
4214}
4215
a5763f22
HMH		 4216static struct ibm_struct thermal_driver_data = {
4217 .name = "thermal",
4218 .read = thermal_read,
2c37aa4e 4219 .exit = thermal_exit,
a5763f22
HMH		 4220};
4221
56b6aeb0
HMH		 4222/*************************************************************************
4223 * EC Dump subdriver
4224 */
4225
78f81cc4
BD		 4226static u8 ecdump_regs[256];
4227
4228static int ecdump_read(char *p)
4229{
4230 int len = 0;
4231 int i, j;
4232 u8 v;
4233
4234 len += sprintf(p + len, "EC "
4235 " +00 +01 +02 +03 +04 +05 +06 +07"
4236 " +08 +09 +0a +0b +0c +0d +0e +0f\n");
4237 for (i = 0; i < 256; i += 16) {
4238 len += sprintf(p + len, "EC 0x%02x:", i);
4239 for (j = 0; j < 16; j++) {
4240 if (!acpi_ec_read(i + j, &v))
4241 break;
4242 if (v != ecdump_regs[i + j])
4243 len += sprintf(p + len, " *%02x", v);
4244 else
4245 len += sprintf(p + len, " %02x", v);
4246 ecdump_regs[i + j] = v;
4247 }
4248 len += sprintf(p + len, "\n");
4249 if (j != 16)
4250 break;
4251 }
4252
4253 /* These are way too dangerous to advertise openly... */
4254#if 0
4255 len += sprintf(p + len, "commands:\t0x<offset> 0x<value>"
4256 " (<offset> is 00-ff, <value> is 00-ff)\n");
4257 len += sprintf(p + len, "commands:\t0x<offset> <value> "
4258 " (<offset> is 00-ff, <value> is 0-255)\n");
4259#endif
4260 return len;
4261}
4262
4263static int ecdump_write(char *buf)
4264{
4265 char *cmd;
4266 int i, v;
4267
4268 while ((cmd = next_cmd(&buf))) {
4269 if (sscanf(cmd, "0x%x 0x%x", &i, &v) == 2) {
4270 /* i and v set */
4271 } else if (sscanf(cmd, "0x%x %u", &i, &v) == 2) {
4272 /* i and v set */
4273 } else
4274 return -EINVAL;
4275 if (i >= 0 && i < 256 && v >= 0 && v < 256) {
4276 if (!acpi_ec_write(i, v))
1da177e4
LT		 4277 return -EIO;
4278 } else
4279 return -EINVAL;
4280 }
4281
4282 return 0;
78f81cc4
BD		 4283}
4284
a5763f22
HMH		 4285static struct ibm_struct ecdump_driver_data = {
4286 .name = "ecdump",
4287 .read = ecdump_read,
4288 .write = ecdump_write,
92641177 4289 .flags.experimental = 1,
a5763f22
HMH		 4290};
4291
56b6aeb0
HMH		 4292/*************************************************************************
4293 * Backlight/brightness subdriver
4294 */
4295
f74a27d4
HMH		 4296#define TPACPI_BACKLIGHT_DEV_NAME "thinkpad_screen"
4297
94954cc6 4298static struct backlight_device *ibm_backlight_device;
f74a27d4
HMH		 4299static int brightness_offset = 0x31;
4300static int brightness_mode;
4301static unsigned int brightness_enable = 2; /* 2 = auto, 0 = no, 1 = yes */
4302
b21a15f6 4303static struct mutex brightness_mutex;
56b6aeb0 4304
b21a15f6
HMH		 4305/*
4306 * ThinkPads can read brightness from two places: EC 0x31, or
4307 * CMOS NVRAM byte 0x5E, bits 0-3.
4308 */
4309static int brightness_get(struct backlight_device *bd)
4310{
4311 u8 lec = 0, lcmos = 0, level = 0;
4312
4313 if (brightness_mode & 1) {
4314 if (!acpi_ec_read(brightness_offset, &lec))
4315 return -EIO;
4316 lec &= (tp_features.bright_16levels)? 0x0f : 0x07;
4317 level = lec;
4318 };
4319 if (brightness_mode & 2) {
4320 lcmos = (nvram_read_byte(TP_NVRAM_ADDR_BRIGHTNESS)
4321 & TP_NVRAM_MASK_LEVEL_BRIGHTNESS)
4322 >> TP_NVRAM_POS_LEVEL_BRIGHTNESS;
4323 lcmos &= (tp_features.bright_16levels)? 0x0f : 0x07;
4324 level = lcmos;
4325 }
4326
2d5e94d7
HMH		 4327 if (brightness_mode == 3) {
4328 if (lec == lcmos)
4329 tp_warned.bright_cmos_ec_unsync = 0;
4330 else {
4331 if (!tp_warned.bright_cmos_ec_unsync) {
4332 printk(TPACPI_ERR
4333 "CMOS NVRAM (%u) and EC (%u) do not "
4334 "agree on display brightness level\n",
4335 (unsigned int) lcmos,
4336 (unsigned int) lec);
4337 tp_warned.bright_cmos_ec_unsync = 1;
4338 }
4339 return -EIO;
4340 }
b21a15f6
HMH		 4341 }
4342
4343 return level;
4344}
4345
4346/* May return EINTR which can always be mapped to ERESTARTSYS */
4347static int brightness_set(int value)
4348{
4349 int cmos_cmd, inc, i, res;
4350 int current_value;
4351
4352 if (value > ((tp_features.bright_16levels)? 15 : 7))
4353 return -EINVAL;
4354
4355 res = mutex_lock_interruptible(&brightness_mutex);
4356 if (res < 0)
4357 return res;
4358
4359 current_value = brightness_get(NULL);
4360 if (current_value < 0) {
4361 res = current_value;
4362 goto errout;
4363 }
4364
4365 cmos_cmd = value > current_value ?
4366 TP_CMOS_BRIGHTNESS_UP :
4367 TP_CMOS_BRIGHTNESS_DOWN;
4368 inc = (value > current_value)? 1 : -1;
4369
4370 res = 0;
4371 for (i = current_value; i != value; i += inc) {
4372 if ((brightness_mode & 2) &&
4373 issue_thinkpad_cmos_command(cmos_cmd)) {
4374 res = -EIO;
4375 goto errout;
4376 }
4377 if ((brightness_mode & 1) &&
4378 !acpi_ec_write(brightness_offset, i + inc)) {
4379 res = -EIO;
4380 goto errout;;
4381 }
4382 }
4383
4384errout:
4385 mutex_unlock(&brightness_mutex);
4386 return res;
4387}
4388
4389/* sysfs backlight class ----------------------------------------------- */
4390
4391static int brightness_update_status(struct backlight_device *bd)
4392{
4393 /* it is the backlight class's job (caller) to handle
4394 * EINTR and other errors properly */
4395 return brightness_set(
4396 (bd->props.fb_blank == FB_BLANK_UNBLANK &&
4397 bd->props.power == FB_BLANK_UNBLANK) ?
4398 bd->props.brightness : 0);
4399}
4400
4401static struct backlight_ops ibm_backlight_data = {
35ff8b9f
HMH		 4402 .get_brightness = brightness_get,
4403 .update_status = brightness_update_status,
56b6aeb0
HMH		 4404};
4405
b21a15f6 4406/* --------------------------------------------------------------------- */
f432255e 4407
a5763f22 4408static int __init brightness_init(struct ibm_init_struct *iibm)
56b6aeb0
HMH		 4409{
4410 int b;
4411
fe08bc4b
HMH		 4412 vdbg_printk(TPACPI_DBG_INIT, "initializing brightness subdriver\n");
4413
f432255e
HMH		 4414 mutex_init(&brightness_mutex);
4415
b5972796
HMH		 4416 /*
4417 * We always attempt to detect acpi support, so as to switch
4418 * Lenovo Vista BIOS to ACPI brightness mode even if we are not
4419 * going to publish a backlight interface
4420 */
4421 b = tpacpi_check_std_acpi_brightness_support();
4422 if (b > 0) {
4423 if (thinkpad_id.vendor == PCI_VENDOR_ID_LENOVO) {
4424 printk(TPACPI_NOTICE
4425 "Lenovo BIOS switched to ACPI backlight "
4426 "control mode\n");
4427 }
4428 if (brightness_enable > 1) {
e0c7dfe7 4429 printk(TPACPI_NOTICE
35ff8b9f
HMH		 4430 "standard ACPI backlight interface "
4431 "available, not loading native one...\n");
e11e211a
HMH		 4432 return 1;
4433 }
87cc537a
HMH		 4434 }
4435
b5972796
HMH		 4436 if (!brightness_enable) {
4437 dbg_printk(TPACPI_DBG_INIT,
4438 "brightness support disabled by "
4439 "module parameter\n");
4440 return 1;
4441 }
4442
4443 if (b > 16) {
4444 printk(TPACPI_ERR
4445 "Unsupported brightness interface, "
4446 "please contact %s\n", TPACPI_MAIL);
4447 return 1;
4448 }
4449 if (b == 16)
4450 tp_features.bright_16levels = 1;
4451
24d3b774
HMH		 4452 if (!brightness_mode) {
4453 if (thinkpad_id.vendor == PCI_VENDOR_ID_LENOVO)
4454 brightness_mode = 2;
4455 else
4456 brightness_mode = 3;
4457
4458 dbg_printk(TPACPI_DBG_INIT, "selected brightness_mode=%d\n",
4459 brightness_mode);
4460 }
4461
4462 if (brightness_mode > 3)
4463 return -EINVAL;
4464
56b6aeb0
HMH		 4465 b = brightness_get(NULL);
4466 if (b < 0)
24d3b774 4467 return 1;
56b6aeb0 4468
a3f104c0 4469 if (tp_features.bright_16levels)
35ff8b9f
HMH		 4470 printk(TPACPI_INFO
4471 "detected a 16-level brightness capable ThinkPad\n");
a3f104c0 4472
7d5a015e
HMH		 4473 ibm_backlight_device = backlight_device_register(
4474 TPACPI_BACKLIGHT_DEV_NAME, NULL, NULL,
4475 &ibm_backlight_data);
56b6aeb0 4476 if (IS_ERR(ibm_backlight_device)) {
e0c7dfe7 4477 printk(TPACPI_ERR "Could not register backlight device\n");
56b6aeb0
HMH		 4478 return PTR_ERR(ibm_backlight_device);
4479 }
fe08bc4b 4480 vdbg_printk(TPACPI_DBG_INIT, "brightness is supported\n");
56b6aeb0 4481
a3f104c0
HMH		 4482 ibm_backlight_device->props.max_brightness =
4483 (tp_features.bright_16levels)? 15 : 7;
56b6aeb0
HMH		 4484 ibm_backlight_device->props.brightness = b;
4485 backlight_update_status(ibm_backlight_device);
4486
4487 return 0;
4488}
4489
4490static void brightness_exit(void)
4491{
4492 if (ibm_backlight_device) {
fe08bc4b
HMH		 4493 vdbg_printk(TPACPI_DBG_EXIT,
4494 "calling backlight_device_unregister()\n");
56b6aeb0
HMH		 4495 backlight_device_unregister(ibm_backlight_device);
4496 ibm_backlight_device = NULL;
4497 }
4498}
4499
56b6aeb0
HMH		 4500static int brightness_read(char *p)
4501{
4502 int len = 0;
4503 int level;
4504
35ff8b9f
HMH		 4505 level = brightness_get(NULL);
4506 if (level < 0) {
56b6aeb0
HMH		 4507 len += sprintf(p + len, "level:\t\tunreadable\n");
4508 } else {
a3f104c0 4509 len += sprintf(p + len, "level:\t\t%d\n", level);
56b6aeb0
HMH		 4510 len += sprintf(p + len, "commands:\tup, down\n");
4511 len += sprintf(p + len, "commands:\tlevel <level>"
a3f104c0
HMH		 4512 " (<level> is 0-%d)\n",
4513 (tp_features.bright_16levels) ? 15 : 7);
56b6aeb0
HMH		 4514 }
4515
4516 return len;
4517}
4518
8acb0250
HM		 4519static int brightness_write(char *buf)
4520{
4521 int level;
4273af8d 4522 int rc;
1da177e4 4523 char *cmd;
a3f104c0 4524 int max_level = (tp_features.bright_16levels) ? 15 : 7;
1da177e4 4525
4273af8d
HMH		 4526 level = brightness_get(NULL);
4527 if (level < 0)
4528 return level;
78f81cc4 4529
4273af8d 4530 while ((cmd = next_cmd(&buf))) {
78f81cc4 4531 if (strlencmp(cmd, "up") == 0) {
4273af8d
HMH		 4532 if (level < max_level)
4533 level++;
78f81cc4 4534 } else if (strlencmp(cmd, "down") == 0) {
4273af8d
HMH		 4535 if (level > 0)
4536 level--;
4537 } else if (sscanf(cmd, "level %d", &level) == 1 &&
4538 level >= 0 && level <= max_level) {
4539 /* new level set */
78f81cc4
BD		 4540 } else
4541 return -EINVAL;
78f81cc4
BD		 4542 }
4543
4273af8d
HMH		 4544 /*
4545 * Now we know what the final level should be, so we try to set it.
4546 * Doing it this way makes the syscall restartable in case of EINTR
4547 */
4548 rc = brightness_set(level);
4549 return (rc == -EINTR)? ERESTARTSYS : rc;
78f81cc4
BD		 4550}
4551
a5763f22
HMH		 4552static struct ibm_struct brightness_driver_data = {
4553 .name = "brightness",
4554 .read = brightness_read,
4555 .write = brightness_write,
4556 .exit = brightness_exit,
4557};
4558
56b6aeb0
HMH		 4559/*************************************************************************
4560 * Volume subdriver
4561 */
fb87a811 4562
f74a27d4
HMH		 4563static int volume_offset = 0x30;
4564
78f81cc4
BD		 4565static int volume_read(char *p)
4566{
4567 int len = 0;
4568 u8 level;
4569
4570 if (!acpi_ec_read(volume_offset, &level)) {
4571 len += sprintf(p + len, "level:\t\tunreadable\n");
4572 } else {
4573 len += sprintf(p + len, "level:\t\t%d\n", level & 0xf);
4574 len += sprintf(p + len, "mute:\t\t%s\n", onoff(level, 6));
4575 len += sprintf(p + len, "commands:\tup, down, mute\n");
4576 len += sprintf(p + len, "commands:\tlevel <level>"
4577 " (<level> is 0-15)\n");
4578 }
4579
4580 return len;
4581}
4582
78f81cc4
BD		 4583static int volume_write(char *buf)
4584{
4585 int cmos_cmd, inc, i;
4586 u8 level, mute;
4587 int new_level, new_mute;
4588 char *cmd;
4589
4590 while ((cmd = next_cmd(&buf))) {
4591 if (!acpi_ec_read(volume_offset, &level))
4592 return -EIO;
4593 new_mute = mute = level & 0x40;
4594 new_level = level = level & 0xf;
4595
4596 if (strlencmp(cmd, "up") == 0) {
4597 if (mute)
4598 new_mute = 0;
4599 else
4600 new_level = level == 15 ? 15 : level + 1;
4601 } else if (strlencmp(cmd, "down") == 0) {
4602 if (mute)
4603 new_mute = 0;
4604 else
4605 new_level = level == 0 ? 0 : level - 1;
4606 } else if (sscanf(cmd, "level %d", &new_level) == 1 &&
4607 new_level >= 0 && new_level <= 15) {
4608 /* new_level set */
4609 } else if (strlencmp(cmd, "mute") == 0) {
4610 new_mute = 0x40;
1da177e4
LT		 4611 } else
4612 return -EINVAL;
4613
35ff8b9f
HMH		 4614 if (new_level != level) {
4615 /* mute doesn't change */
4616
4617 cmos_cmd = (new_level > level) ?
4618 TP_CMOS_VOLUME_UP : TP_CMOS_VOLUME_DOWN;
78f81cc4
BD		 4619 inc = new_level > level ? 1 : -1;
4620
c9bea99c 4621 if (mute && (issue_thinkpad_cmos_command(cmos_cmd) ||
78f81cc4
BD		 4622 !acpi_ec_write(volume_offset, level)))
4623 return -EIO;
4624
4625 for (i = level; i != new_level; i += inc)
c9bea99c 4626 if (issue_thinkpad_cmos_command(cmos_cmd) ||
78f81cc4
BD		 4627 !acpi_ec_write(volume_offset, i + inc))
4628 return -EIO;
4629
35ff8b9f
HMH		 4630 if (mute &&
4631 (issue_thinkpad_cmos_command(TP_CMOS_VOLUME_MUTE) ||
4632 !acpi_ec_write(volume_offset, new_level + mute))) {
78f81cc4 4633 return -EIO;
35ff8b9f 4634 }
78f81cc4
BD		 4635 }
4636
35ff8b9f
HMH		 4637 if (new_mute != mute) {
4638 /* level doesn't change */
4639
4640 cmos_cmd = (new_mute) ?
4641 TP_CMOS_VOLUME_MUTE : TP_CMOS_VOLUME_UP;
78f81cc4 4642
c9bea99c 4643 if (issue_thinkpad_cmos_command(cmos_cmd) ||
78f81cc4
BD		 4644 !acpi_ec_write(volume_offset, level + new_mute))
4645 return -EIO;
4646 }
4647 }
4648
4649 return 0;
4650}
4651
a5763f22
HMH		 4652static struct ibm_struct volume_driver_data = {
4653 .name = "volume",
4654 .read = volume_read,
4655 .write = volume_write,
4656};
56b6aeb0
HMH		 4657
4658/*************************************************************************
4659 * Fan subdriver
4660 */
4661
4662/*
4663 * FAN ACCESS MODES
4664 *
efa27145 4665 * TPACPI_FAN_RD_ACPI_GFAN:
56b6aeb0
HMH		 4666 * ACPI GFAN method: returns fan level
4667 *
efa27145 4668 * see TPACPI_FAN_WR_ACPI_SFAN
f51d1a39 4669 * EC 0x2f (HFSP) not available if GFAN exists
56b6aeb0 4670 *
efa27145 4671 * TPACPI_FAN_WR_ACPI_SFAN:
56b6aeb0
HMH		 4672 * ACPI SFAN method: sets fan level, 0 (stop) to 7 (max)
4673 *
f51d1a39
HMH		 4674 * EC 0x2f (HFSP) might be available *for reading*, but do not use
4675 * it for writing.
56b6aeb0 4676 *
efa27145 4677 * TPACPI_FAN_WR_TPEC:
f51d1a39
HMH		 4678 * ThinkPad EC register 0x2f (HFSP): fan control loop mode
4679 * Supported on almost all ThinkPads
56b6aeb0
HMH		 4680 *
4681 * Fan speed changes of any sort (including those caused by the
4682 * disengaged mode) are usually done slowly by the firmware as the
4683 * maximum ammount of fan duty cycle change per second seems to be
4684 * limited.
4685 *
4686 * Reading is not available if GFAN exists.
4687 * Writing is not available if SFAN exists.
4688 *
4689 * Bits
4690 * 7 automatic mode engaged;
4691 * (default operation mode of the ThinkPad)
4692 * fan level is ignored in this mode.
f51d1a39 4693 * 6 full speed mode (takes precedence over bit 7);
56b6aeb0 4694 * not available on all thinkpads. May disable
f51d1a39
HMH		 4695 * the tachometer while the fan controller ramps up
4696 * the speed (which can take up to a few *minutes*).
4697 * Speeds up fan to 100% duty-cycle, which is far above
4698 * the standard RPM levels. It is not impossible that
4699 * it could cause hardware damage.
56b6aeb0
HMH		 4700 * 5-3 unused in some models. Extra bits for fan level
4701 * in others, but still useless as all values above
4702 * 7 map to the same speed as level 7 in these models.
4703 * 2-0 fan level (0..7 usually)
4704 * 0x00 = stop
4705 * 0x07 = max (set when temperatures critical)
4706 * Some ThinkPads may have other levels, see
efa27145 4707 * TPACPI_FAN_WR_ACPI_FANS (X31/X40/X41)
56b6aeb0
HMH		 4708 *
4709 * FIRMWARE BUG: on some models, EC 0x2f might not be initialized at
4710 * boot. Apparently the EC does not intialize it, so unless ACPI DSDT
4711 * does so, its initial value is meaningless (0x07).
4712 *
4713 * For firmware bugs, refer to:
4714 * http://thinkwiki.org/wiki/Embedded_Controller_Firmware#Firmware_Issues
4715 *
4716 * ----
4717 *
4718 * ThinkPad EC register 0x84 (LSB), 0x85 (MSB):
4719 * Main fan tachometer reading (in RPM)
4720 *
4721 * This register is present on all ThinkPads with a new-style EC, and
4722 * it is known not to be present on the A21m/e, and T22, as there is
4723 * something else in offset 0x84 according to the ACPI DSDT. Other
4724 * ThinkPads from this same time period (and earlier) probably lack the
4725 * tachometer as well.
4726 *
4727 * Unfortunately a lot of ThinkPads with new-style ECs but whose firwmare
4728 * was never fixed by IBM to report the EC firmware version string
4729 * probably support the tachometer (like the early X models), so
4730 * detecting it is quite hard. We need more data to know for sure.
4731 *
4732 * FIRMWARE BUG: always read 0x84 first, otherwise incorrect readings
4733 * might result.
4734 *
f51d1a39
HMH		 4735 * FIRMWARE BUG: may go stale while the EC is switching to full speed
4736 * mode.
56b6aeb0
HMH		 4737 *
4738 * For firmware bugs, refer to:
4739 * http://thinkwiki.org/wiki/Embedded_Controller_Firmware#Firmware_Issues
4740 *
efa27145 4741 * TPACPI_FAN_WR_ACPI_FANS:
56b6aeb0
HMH		 4742 * ThinkPad X31, X40, X41. Not available in the X60.
4743 *
4744 * FANS ACPI handle: takes three arguments: low speed, medium speed,
4745 * high speed. ACPI DSDT seems to map these three speeds to levels
4746 * as follows: STOP LOW LOW MED MED HIGH HIGH HIGH HIGH
4747 * (this map is stored on FAN0..FAN8 as "0,1,1,2,2,3,3,3,3")
4748 *
4749 * The speeds are stored on handles
4750 * (FANA:FAN9), (FANC:FANB), (FANE:FAND).
4751 *
4752 * There are three default speed sets, acessible as handles:
4753 * FS1L,FS1M,FS1H; FS2L,FS2M,FS2H; FS3L,FS3M,FS3H
4754 *
4755 * ACPI DSDT switches which set is in use depending on various
4756 * factors.
4757 *
efa27145 4758 * TPACPI_FAN_WR_TPEC is also available and should be used to
56b6aeb0
HMH		 4759 * command the fan. The X31/X40/X41 seems to have 8 fan levels,
4760 * but the ACPI tables just mention level 7.
4761 */
4762
f74a27d4
HMH		 4763enum { /* Fan control constants */
4764 fan_status_offset = 0x2f, /* EC register 0x2f */
4765 fan_rpm_offset = 0x84, /* EC register 0x84: LSB, 0x85 MSB (RPM)
4766 * 0x84 must be read before 0x85 */
4767
4768 TP_EC_FAN_FULLSPEED = 0x40, /* EC fan mode: full speed */
4769 TP_EC_FAN_AUTO = 0x80, /* EC fan mode: auto fan control */
4770
4771 TPACPI_FAN_LAST_LEVEL = 0x100, /* Use cached last-seen fan level */
4772};
4773
4774enum fan_status_access_mode {
4775 TPACPI_FAN_NONE = 0, /* No fan status or control */
4776 TPACPI_FAN_RD_ACPI_GFAN, /* Use ACPI GFAN */
4777 TPACPI_FAN_RD_TPEC, /* Use ACPI EC regs 0x2f, 0x84-0x85 */
4778};
4779
4780enum fan_control_access_mode {
4781 TPACPI_FAN_WR_NONE = 0, /* No fan control */
4782 TPACPI_FAN_WR_ACPI_SFAN, /* Use ACPI SFAN */
4783 TPACPI_FAN_WR_TPEC, /* Use ACPI EC reg 0x2f */
4784 TPACPI_FAN_WR_ACPI_FANS, /* Use ACPI FANS and EC reg 0x2f */
4785};
4786
4787enum fan_control_commands {
4788 TPACPI_FAN_CMD_SPEED = 0x0001, /* speed command */
4789 TPACPI_FAN_CMD_LEVEL = 0x0002, /* level command */
4790 TPACPI_FAN_CMD_ENABLE = 0x0004, /* enable/disable cmd,
4791 * and also watchdog cmd */
4792};
4793
4794static int fan_control_allowed;
4795
69ba91cb
HMH		 4796static enum fan_status_access_mode fan_status_access_mode;
4797static enum fan_control_access_mode fan_control_access_mode;
4798static enum fan_control_commands fan_control_commands;
78f81cc4 4799
778b4d74 4800static u8 fan_control_initial_status;
fe98a52c 4801static u8 fan_control_desired_level;
f74a27d4
HMH		 4802static int fan_watchdog_maxinterval;
4803
4804static struct mutex fan_mutex;
778b4d74 4805
25c68a33 4806static void fan_watchdog_fire(struct work_struct *ignored);
25c68a33 4807static DECLARE_DELAYED_WORK(fan_watchdog_task, fan_watchdog_fire);
16663a87 4808
e0c7dfe7
HMH		 4809TPACPI_HANDLE(fans, ec, "FANS"); /* X31, X40, X41 */
4810TPACPI_HANDLE(gfan, ec, "GFAN", /* 570 */
56b6aeb0
HMH		 4811 "\\FSPD", /* 600e/x, 770e, 770x */
4812 ); /* all others */
e0c7dfe7 4813TPACPI_HANDLE(sfan, ec, "SFAN", /* 570 */
56b6aeb0
HMH		 4814 "JFNS", /* 770x-JL */
4815 ); /* all others */
4816
fe98a52c 4817/*
b21a15f6 4818 * Call with fan_mutex held
fe98a52c 4819 */
b21a15f6 4820static void fan_update_desired_level(u8 status)
fe98a52c 4821{
b21a15f6
HMH		 4822 if ((status &
4823 (TP_EC_FAN_AUTO | TP_EC_FAN_FULLSPEED)) == 0) {
4824 if (status > 7)
4825 fan_control_desired_level = 7;
4826 else
4827 fan_control_desired_level = status;
4828 }
4829}
fe98a52c 4830
b21a15f6
HMH		 4831static int fan_get_status(u8 *status)
4832{
4833 u8 s;
fe98a52c 4834
b21a15f6
HMH		 4835 /* TODO:
4836 * Add TPACPI_FAN_RD_ACPI_FANS ? */
fe98a52c 4837
b21a15f6
HMH		 4838 switch (fan_status_access_mode) {
4839 case TPACPI_FAN_RD_ACPI_GFAN:
4840 /* 570, 600e/x, 770e, 770x */
fe98a52c 4841
b21a15f6
HMH		 4842 if (unlikely(!acpi_evalf(gfan_handle, &s, NULL, "d")))
4843 return -EIO;
fe98a52c 4844
b21a15f6
HMH		 4845 if (likely(status))
4846 *status = s & 0x07;
fe98a52c 4847
b21a15f6
HMH		 4848 break;
4849
4850 case TPACPI_FAN_RD_TPEC:
4851 /* all except 570, 600e/x, 770e, 770x */
4852 if (unlikely(!acpi_ec_read(fan_status_offset, &s)))
4853 return -EIO;
4854
4855 if (likely(status))
4856 *status = s;
fe98a52c 4857
fe98a52c 4858 break;
b21a15f6 4859
fe98a52c 4860 default:
b21a15f6 4861 return -ENXIO;
fe98a52c
HMH		 4862 }
4863
b21a15f6
HMH		 4864 return 0;
4865}
fe98a52c 4866
b21a15f6
HMH		 4867static int fan_get_status_safe(u8 *status)
4868{
4869 int rc;
4870 u8 s;
fe98a52c 4871
b21a15f6
HMH		 4872 if (mutex_lock_interruptible(&fan_mutex))
4873 return -ERESTARTSYS;
4874 rc = fan_get_status(&s);
4875 if (!rc)
4876 fan_update_desired_level(s);
4877 mutex_unlock(&fan_mutex);
fe98a52c 4878
b21a15f6
HMH		 4879 if (status)
4880 *status = s;
fe98a52c 4881
b21a15f6
HMH		 4882 return rc;
4883}
4884
4885static int fan_get_speed(unsigned int *speed)
fe98a52c 4886{
b21a15f6 4887 u8 hi, lo;
fe98a52c 4888
b21a15f6
HMH		 4889 switch (fan_status_access_mode) {
4890 case TPACPI_FAN_RD_TPEC:
4891 /* all except 570, 600e/x, 770e, 770x */
4892 if (unlikely(!acpi_ec_read(fan_rpm_offset, &lo) ||
4893 !acpi_ec_read(fan_rpm_offset + 1, &hi)))
4894 return -EIO;
fe98a52c 4895
b21a15f6
HMH		 4896 if (likely(speed))
4897 *speed = (hi << 8) | lo;
fe98a52c 4898
b21a15f6 4899 break;
fe98a52c 4900
b21a15f6
HMH		 4901 default:
4902 return -ENXIO;
4903 }
fe98a52c 4904
b21a15f6 4905 return 0;
fe98a52c
HMH		 4906}
4907
b21a15f6 4908static int fan_set_level(int level)
fe98a52c 4909{
b21a15f6
HMH		 4910 if (!fan_control_allowed)
4911 return -EPERM;
fe98a52c 4912
b21a15f6
HMH		 4913 switch (fan_control_access_mode) {
4914 case TPACPI_FAN_WR_ACPI_SFAN:
4915 if (level >= 0 && level <= 7) {
4916 if (!acpi_evalf(sfan_handle, NULL, NULL, "vd", level))
4917 return -EIO;
4918 } else
4919 return -EINVAL;
4920 break;
fe98a52c 4921
b21a15f6
HMH		 4922 case TPACPI_FAN_WR_ACPI_FANS:
4923 case TPACPI_FAN_WR_TPEC:
4924 if ((level != TP_EC_FAN_AUTO) &&
4925 (level != TP_EC_FAN_FULLSPEED) &&
4926 ((level < 0) || (level > 7)))
4927 return -EINVAL;
fe98a52c 4928
b21a15f6
HMH		 4929 /* safety net should the EC not support AUTO
4930 * or FULLSPEED mode bits and just ignore them */
4931 if (level & TP_EC_FAN_FULLSPEED)
4932 level |= 7; /* safety min speed 7 */
547266e4 4933 else if (level & TP_EC_FAN_AUTO)
b21a15f6 4934 level |= 4; /* safety min speed 4 */
fe98a52c 4935
b21a15f6
HMH		 4936 if (!acpi_ec_write(fan_status_offset, level))
4937 return -EIO;
4938 else
4939 tp_features.fan_ctrl_status_undef = 0;
4940 break;
fe98a52c 4941
b21a15f6
HMH		 4942 default:
4943 return -ENXIO;
4944 }
4945 return 0;
fe98a52c
HMH		 4946}
4947
b21a15f6 4948static int fan_set_level_safe(int level)
fe98a52c 4949{
b21a15f6 4950 int rc;
fe98a52c 4951
b21a15f6
HMH		 4952 if (!fan_control_allowed)
4953 return -EPERM;
fe98a52c 4954
b21a15f6
HMH		 4955 if (mutex_lock_interruptible(&fan_mutex))
4956 return -ERESTARTSYS;
fe98a52c 4957
b21a15f6
HMH		 4958 if (level == TPACPI_FAN_LAST_LEVEL)
4959 level = fan_control_desired_level;
fe98a52c 4960
b21a15f6
HMH		 4961 rc = fan_set_level(level);
4962 if (!rc)
4963 fan_update_desired_level(level);
4964
4965 mutex_unlock(&fan_mutex);
4966 return rc;
fe98a52c
HMH		 4967}
4968
b21a15f6 4969static int fan_set_enable(void)
fe98a52c 4970{
b21a15f6
HMH		 4971 u8 s;
4972 int rc;
fe98a52c 4973
ecf2a80a
HMH		 4974 if (!fan_control_allowed)
4975 return -EPERM;
4976
b21a15f6
HMH		 4977 if (mutex_lock_interruptible(&fan_mutex))
4978 return -ERESTARTSYS;
fe98a52c 4979
b21a15f6
HMH		 4980 switch (fan_control_access_mode) {
4981 case TPACPI_FAN_WR_ACPI_FANS:
4982 case TPACPI_FAN_WR_TPEC:
4983 rc = fan_get_status(&s);
4984 if (rc < 0)
4985 break;
fe98a52c 4986
b21a15f6
HMH		 4987 /* Don't go out of emergency fan mode */
4988 if (s != 7) {
4989 s &= 0x07;
4990 s |= TP_EC_FAN_AUTO | 4; /* min fan speed 4 */
4991 }
fe98a52c 4992
b21a15f6
HMH		 4993 if (!acpi_ec_write(fan_status_offset, s))
4994 rc = -EIO;
4995 else {
4996 tp_features.fan_ctrl_status_undef = 0;
4997 rc = 0;
4998 }
4999 break;
fe98a52c 5000
b21a15f6
HMH		 5001 case TPACPI_FAN_WR_ACPI_SFAN:
5002 rc = fan_get_status(&s);
5003 if (rc < 0)
5004 break;
fe98a52c 5005
b21a15f6 5006 s &= 0x07;
fe98a52c 5007
b21a15f6
HMH		 5008 /* Set fan to at least level 4 */
5009 s |= 4;
fe08bc4b 5010
b21a15f6 5011 if (!acpi_evalf(sfan_handle, NULL, NULL, "vd", s))
35ff8b9f 5012 rc = -EIO;
b21a15f6
HMH		 5013 else
5014 rc = 0;
5015 break;
78f81cc4 5016
b21a15f6
HMH		 5017 default:
5018 rc = -ENXIO;
5019 }
5fba344c 5020
b21a15f6
HMH		 5021 mutex_unlock(&fan_mutex);
5022 return rc;
69ba91cb 5023}
78f81cc4 5024
b21a15f6 5025static int fan_set_disable(void)
78f81cc4 5026{
b21a15f6 5027 int rc;
c52f0aa5 5028
b21a15f6
HMH		 5029 if (!fan_control_allowed)
5030 return -EPERM;
78f81cc4 5031
b21a15f6
HMH		 5032 if (mutex_lock_interruptible(&fan_mutex))
5033 return -ERESTARTSYS;
3ef8a609 5034
b21a15f6
HMH		 5035 rc = 0;
5036 switch (fan_control_access_mode) {
5037 case TPACPI_FAN_WR_ACPI_FANS:
5038 case TPACPI_FAN_WR_TPEC:
5039 if (!acpi_ec_write(fan_status_offset, 0x00))
5040 rc = -EIO;
5041 else {
5042 fan_control_desired_level = 0;
5043 tp_features.fan_ctrl_status_undef = 0;
5044 }
3ef8a609
HMH		 5045 break;
5046
b21a15f6
HMH		 5047 case TPACPI_FAN_WR_ACPI_SFAN:
5048 if (!acpi_evalf(sfan_handle, NULL, NULL, "vd", 0x00))
5049 rc = -EIO;
5050 else
5051 fan_control_desired_level = 0;
c52f0aa5
HMH		 5052 break;
5053
5054 default:
b21a15f6 5055 rc = -ENXIO;
78f81cc4
BD		 5056 }
5057
fe98a52c 5058
fe98a52c 5059 mutex_unlock(&fan_mutex);
fe98a52c
HMH		 5060 return rc;
5061}
5062
b21a15f6 5063static int fan_set_speed(int speed)
c52f0aa5 5064{
b21a15f6 5065 int rc;
c52f0aa5 5066
b21a15f6
HMH		 5067 if (!fan_control_allowed)
5068 return -EPERM;
3ef8a609 5069
b21a15f6
HMH		 5070 if (mutex_lock_interruptible(&fan_mutex))
5071 return -ERESTARTSYS;
c52f0aa5 5072
b21a15f6
HMH		 5073 rc = 0;
5074 switch (fan_control_access_mode) {
5075 case TPACPI_FAN_WR_ACPI_FANS:
5076 if (speed >= 0 && speed <= 65535) {
5077 if (!acpi_evalf(fans_handle, NULL, NULL, "vddd",
5078 speed, speed, speed))
5079 rc = -EIO;
5080 } else
5081 rc = -EINVAL;
c52f0aa5
HMH		 5082 break;
5083
5084 default:
b21a15f6 5085 rc = -ENXIO;
c52f0aa5
HMH		 5086 }
5087
b21a15f6
HMH		 5088 mutex_unlock(&fan_mutex);
5089 return rc;
16663a87
HMH		 5090}
5091
5092static void fan_watchdog_reset(void)
5093{
94954cc6 5094 static int fan_watchdog_active;
16663a87 5095
4985cd0a
HMH		 5096 if (fan_control_access_mode == TPACPI_FAN_WR_NONE)
5097 return;
5098
16663a87
HMH		 5099 if (fan_watchdog_active)
5100 cancel_delayed_work(&fan_watchdog_task);
5101
8fef502e
HMH		 5102 if (fan_watchdog_maxinterval > 0 &&
5103 tpacpi_lifecycle != TPACPI_LIFE_EXITING) {
16663a87
HMH		 5104 fan_watchdog_active = 1;
5105 if (!schedule_delayed_work(&fan_watchdog_task,
5106 msecs_to_jiffies(fan_watchdog_maxinterval
5107 * 1000))) {
35ff8b9f
HMH		 5108 printk(TPACPI_ERR
5109 "failed to schedule the fan watchdog, "
16663a87
HMH		 5110 "watchdog will not trigger\n");
5111 }
5112 } else
5113 fan_watchdog_active = 0;
5114}
5115
b21a15f6 5116static void fan_watchdog_fire(struct work_struct *ignored)
78f81cc4 5117{
b21a15f6 5118 int rc;
18ad7996 5119
b21a15f6
HMH		 5120 if (tpacpi_lifecycle != TPACPI_LIFE_RUNNING)
5121 return;
a12095c2 5122
e0c7dfe7 5123 printk(TPACPI_NOTICE "fan watchdog: enabling fan\n");
b21a15f6
HMH		 5124 rc = fan_set_enable();
5125 if (rc < 0) {
e0c7dfe7 5126 printk(TPACPI_ERR "fan watchdog: error %d while enabling fan, "
b21a15f6
HMH		 5127 "will try again later...\n", -rc);
5128 /* reschedule for later */
5129 fan_watchdog_reset();
5130 }
5131}
eaa7571b 5132
b21a15f6
HMH		 5133/*
5134 * SYSFS fan layout: hwmon compatible (device)
5135 *
5136 * pwm*_enable:
5137 * 0: "disengaged" mode
5138 * 1: manual mode
5139 * 2: native EC "auto" mode (recommended, hardware default)
5140 *
5141 * pwm*: set speed in manual mode, ignored otherwise.
5142 * 0 is level 0; 255 is level 7. Intermediate points done with linear
5143 * interpolation.
5144 *
5145 * fan*_input: tachometer reading, RPM
5146 *
5147 *
5148 * SYSFS fan layout: extensions
5149 *
5150 * fan_watchdog (driver):
5151 * fan watchdog interval in seconds, 0 disables (default), max 120
5152 */
5153
5154/* sysfs fan pwm1_enable ----------------------------------------------- */
5155static ssize_t fan_pwm1_enable_show(struct device *dev,
5156 struct device_attribute *attr,
5157 char *buf)
5158{
5159 int res, mode;
5160 u8 status;
5161
5162 res = fan_get_status_safe(&status);
5163 if (res)
5164 return res;
5165
5166 if (unlikely(tp_features.fan_ctrl_status_undef)) {
5167 if (status != fan_control_initial_status) {
d8fd94d9 5168 tp_features.fan_ctrl_status_undef = 0;
b21a15f6
HMH		 5169 } else {
5170 /* Return most likely status. In fact, it
5171 * might be the only possible status */
5172 status = TP_EC_FAN_AUTO;
5173 }
5174 }
5175
5176 if (status & TP_EC_FAN_FULLSPEED) {
5177 mode = 0;
5178 } else if (status & TP_EC_FAN_AUTO) {
5179 mode = 2;
5180 } else
5181 mode = 1;
5182
5183 return snprintf(buf, PAGE_SIZE, "%d\n", mode);
5184}
a12095c2 5185
b21a15f6
HMH		 5186static ssize_t fan_pwm1_enable_store(struct device *dev,
5187 struct device_attribute *attr,
5188 const char *buf, size_t count)
5189{
5190 unsigned long t;
5191 int res, level;
5192
5193 if (parse_strtoul(buf, 2, &t))
5194 return -EINVAL;
5195
5196 switch (t) {
5197 case 0:
5198 level = TP_EC_FAN_FULLSPEED;
5199 break;
5200 case 1:
5201 level = TPACPI_FAN_LAST_LEVEL;
5202 break;
5203 case 2:
5204 level = TP_EC_FAN_AUTO;
5205 break;
5206 case 3:
5207 /* reserved for software-controlled auto mode */
5208 return -ENOSYS;
18ad7996 5209 default:
b21a15f6 5210 return -EINVAL;
18ad7996 5211 }
b21a15f6
HMH		 5212
5213 res = fan_set_level_safe(level);
5214 if (res == -ENXIO)
5215 return -EINVAL;
5216 else if (res < 0)
5217 return res;
5218
5219 fan_watchdog_reset();
5220
5221 return count;
18ad7996
HMH		 5222}
5223
b21a15f6
HMH		 5224static struct device_attribute dev_attr_fan_pwm1_enable =
5225 __ATTR(pwm1_enable, S_IWUSR | S_IRUGO,
5226 fan_pwm1_enable_show, fan_pwm1_enable_store);
5227
5228/* sysfs fan pwm1 ------------------------------------------------------ */
5229static ssize_t fan_pwm1_show(struct device *dev,
5230 struct device_attribute *attr,
5231 char *buf)
fe98a52c 5232{
b21a15f6
HMH		 5233 int res;
5234 u8 status;
fe98a52c 5235
b21a15f6
HMH		 5236 res = fan_get_status_safe(&status);
5237 if (res)
5238 return res;
ecf2a80a 5239
b21a15f6
HMH		 5240 if (unlikely(tp_features.fan_ctrl_status_undef)) {
5241 if (status != fan_control_initial_status) {
5242 tp_features.fan_ctrl_status_undef = 0;
5243 } else {
5244 status = TP_EC_FAN_AUTO;
5245 }
5246 }
fe98a52c 5247
b21a15f6
HMH		 5248 if ((status &
5249 (TP_EC_FAN_AUTO | TP_EC_FAN_FULLSPEED)) != 0)
5250 status = fan_control_desired_level;
fe98a52c 5251
b21a15f6
HMH		 5252 if (status > 7)
5253 status = 7;
fe98a52c 5254
b21a15f6 5255 return snprintf(buf, PAGE_SIZE, "%u\n", (status * 255) / 7);
fe98a52c
HMH		 5256}
5257
b21a15f6
HMH		 5258static ssize_t fan_pwm1_store(struct device *dev,
5259 struct device_attribute *attr,
5260 const char *buf, size_t count)
18ad7996 5261{
b21a15f6 5262 unsigned long s;
1c6a334e 5263 int rc;
b21a15f6 5264 u8 status, newlevel;
1c6a334e 5265
b21a15f6
HMH		 5266 if (parse_strtoul(buf, 255, &s))
5267 return -EINVAL;
5268
5269 /* scale down from 0-255 to 0-7 */
5270 newlevel = (s >> 5) & 0x07;
ecf2a80a 5271
fc589a3c
HMH		 5272 if (mutex_lock_interruptible(&fan_mutex))
5273 return -ERESTARTSYS;
40ca9fdf 5274
b21a15f6
HMH		 5275 rc = fan_get_status(&status);
5276 if (!rc && (status &
5277 (TP_EC_FAN_AUTO | TP_EC_FAN_FULLSPEED)) == 0) {
5278 rc = fan_set_level(newlevel);
5279 if (rc == -ENXIO)
5280 rc = -EINVAL;
5281 else if (!rc) {
5282 fan_update_desired_level(newlevel);
5283 fan_watchdog_reset();
eaa7571b 5284 }
b21a15f6 5285 }
1c6a334e 5286
b21a15f6
HMH		 5287 mutex_unlock(&fan_mutex);
5288 return (rc)? rc : count;
5289}
1c6a334e 5290
b21a15f6
HMH		 5291static struct device_attribute dev_attr_fan_pwm1 =
5292 __ATTR(pwm1, S_IWUSR | S_IRUGO,
5293 fan_pwm1_show, fan_pwm1_store);
1c6a334e 5294
b21a15f6
HMH		 5295/* sysfs fan fan1_input ------------------------------------------------ */
5296static ssize_t fan_fan1_input_show(struct device *dev,
5297 struct device_attribute *attr,
5298 char *buf)
5299{
5300 int res;
5301 unsigned int speed;
1c6a334e 5302
b21a15f6
HMH		 5303 res = fan_get_speed(&speed);
5304 if (res < 0)
5305 return res;
1c6a334e 5306
b21a15f6
HMH		 5307 return snprintf(buf, PAGE_SIZE, "%u\n", speed);
5308}
18ad7996 5309
b21a15f6
HMH		 5310static struct device_attribute dev_attr_fan_fan1_input =
5311 __ATTR(fan1_input, S_IRUGO,
5312 fan_fan1_input_show, NULL);
40ca9fdf 5313
b21a15f6
HMH		 5314/* sysfs fan fan_watchdog (hwmon driver) ------------------------------- */
5315static ssize_t fan_fan_watchdog_show(struct device_driver *drv,
5316 char *buf)
5317{
5318 return snprintf(buf, PAGE_SIZE, "%u\n", fan_watchdog_maxinterval);
18ad7996
HMH		 5319}
5320
b21a15f6
HMH		 5321static ssize_t fan_fan_watchdog_store(struct device_driver *drv,
5322 const char *buf, size_t count)
18ad7996 5323{
b21a15f6
HMH		 5324 unsigned long t;
5325
5326 if (parse_strtoul(buf, 120, &t))
5327 return -EINVAL;
40ca9fdf 5328
ecf2a80a
HMH		 5329 if (!fan_control_allowed)
5330 return -EPERM;
5331
b21a15f6
HMH		 5332 fan_watchdog_maxinterval = t;
5333 fan_watchdog_reset();
40ca9fdf 5334
b21a15f6
HMH		 5335 return count;
5336}
5337
5338static DRIVER_ATTR(fan_watchdog, S_IWUSR | S_IRUGO,
5339 fan_fan_watchdog_show, fan_fan_watchdog_store);
5340
5341/* --------------------------------------------------------------------- */
5342static struct attribute *fan_attributes[] = {
5343 &dev_attr_fan_pwm1_enable.attr, &dev_attr_fan_pwm1.attr,
5344 &dev_attr_fan_fan1_input.attr,
5345 NULL
5346};
5347
5348static const struct attribute_group fan_attr_group = {
5349 .attrs = fan_attributes,
5350};
5351
5352static int __init fan_init(struct ibm_init_struct *iibm)
5353{
5354 int rc;
5355
5356 vdbg_printk(TPACPI_DBG_INIT, "initializing fan subdriver\n");
5357
5358 mutex_init(&fan_mutex);
5359 fan_status_access_mode = TPACPI_FAN_NONE;
5360 fan_control_access_mode = TPACPI_FAN_WR_NONE;
5361 fan_control_commands = 0;
5362 fan_watchdog_maxinterval = 0;
5363 tp_features.fan_ctrl_status_undef = 0;
5364 fan_control_desired_level = 7;
5365
e0c7dfe7
HMH		 5366 TPACPI_ACPIHANDLE_INIT(fans);
5367 TPACPI_ACPIHANDLE_INIT(gfan);
5368 TPACPI_ACPIHANDLE_INIT(sfan);
b21a15f6
HMH		 5369
5370 if (gfan_handle) {
5371 /* 570, 600e/x, 770e, 770x */
5372 fan_status_access_mode = TPACPI_FAN_RD_ACPI_GFAN;
5373 } else {
5374 /* all other ThinkPads: note that even old-style
5375 * ThinkPad ECs supports the fan control register */
5376 if (likely(acpi_ec_read(fan_status_offset,
5377 &fan_control_initial_status))) {
5378 fan_status_access_mode = TPACPI_FAN_RD_TPEC;
5379
5380 /* In some ThinkPads, neither the EC nor the ACPI
5381 * DSDT initialize the fan status, and it ends up
5382 * being set to 0x07 when it *could* be either
5383 * 0x07 or 0x80.
5384 *
5385 * Enable for TP-1Y (T43), TP-78 (R51e),
5386 * TP-76 (R52), TP-70 (T43, R52), which are known
5387 * to be buggy. */
5388 if (fan_control_initial_status == 0x07) {
5389 switch (thinkpad_id.ec_model) {
5390 case 0x5931: /* TP-1Y */
5391 case 0x3837: /* TP-78 */
5392 case 0x3637: /* TP-76 */
5393 case 0x3037: /* TP-70 */
e0c7dfe7 5394 printk(TPACPI_NOTICE
35ff8b9f
HMH		 5395 "fan_init: initial fan status "
5396 "is unknown, assuming it is "
5397 "in auto mode\n");
b21a15f6
HMH		 5398 tp_features.fan_ctrl_status_undef = 1;
5399 ;;
5400 }
5401 }
5402 } else {
e0c7dfe7 5403 printk(TPACPI_ERR
b21a15f6
HMH		 5404 "ThinkPad ACPI EC access misbehaving, "
5405 "fan status and control unavailable\n");
5406 return 1;
5407 }
5408 }
5409
5410 if (sfan_handle) {
5411 /* 570, 770x-JL */
5412 fan_control_access_mode = TPACPI_FAN_WR_ACPI_SFAN;
5413 fan_control_commands |=
5414 TPACPI_FAN_CMD_LEVEL | TPACPI_FAN_CMD_ENABLE;
5415 } else {
5416 if (!gfan_handle) {
5417 /* gfan without sfan means no fan control */
5418 /* all other models implement TP EC 0x2f control */
5419
5420 if (fans_handle) {
5421 /* X31, X40, X41 */
5422 fan_control_access_mode =
5423 TPACPI_FAN_WR_ACPI_FANS;
5424 fan_control_commands |=
5425 TPACPI_FAN_CMD_SPEED |
5426 TPACPI_FAN_CMD_LEVEL |
5427 TPACPI_FAN_CMD_ENABLE;
5428 } else {
5429 fan_control_access_mode = TPACPI_FAN_WR_TPEC;
5430 fan_control_commands |=
5431 TPACPI_FAN_CMD_LEVEL |
5432 TPACPI_FAN_CMD_ENABLE;
5433 }
fe98a52c 5434 }
b21a15f6 5435 }
18ad7996 5436
b21a15f6
HMH		 5437 vdbg_printk(TPACPI_DBG_INIT, "fan is %s, modes %d, %d\n",
5438 str_supported(fan_status_access_mode != TPACPI_FAN_NONE ||
5439 fan_control_access_mode != TPACPI_FAN_WR_NONE),
5440 fan_status_access_mode, fan_control_access_mode);
1c6a334e 5441
b21a15f6
HMH		 5442 /* fan control master switch */
5443 if (!fan_control_allowed) {
5444 fan_control_access_mode = TPACPI_FAN_WR_NONE;
5445 fan_control_commands = 0;
5446 dbg_printk(TPACPI_DBG_INIT,
5447 "fan control features disabled by parameter\n");
18ad7996 5448 }
40ca9fdf 5449
b21a15f6
HMH		 5450 /* update fan_control_desired_level */
5451 if (fan_status_access_mode != TPACPI_FAN_NONE)
5452 fan_get_status_safe(NULL);
fe98a52c 5453
b21a15f6
HMH		 5454 if (fan_status_access_mode != TPACPI_FAN_NONE ||
5455 fan_control_access_mode != TPACPI_FAN_WR_NONE) {
5456 rc = sysfs_create_group(&tpacpi_sensors_pdev->dev.kobj,
5457 &fan_attr_group);
5458 if (!(rc < 0))
5459 rc = driver_create_file(&tpacpi_hwmon_pdriver.driver,
5460 &driver_attr_fan_watchdog);
5461 if (rc < 0)
5462 return rc;
5463 return 0;
5464 } else
5465 return 1;
56b6aeb0
HMH		 5466}
5467
b21a15f6 5468static void fan_exit(void)
56b6aeb0 5469{
35ff8b9f
HMH		 5470 vdbg_printk(TPACPI_DBG_EXIT,
5471 "cancelling any pending fan watchdog tasks\n");
56b6aeb0 5472
b21a15f6
HMH		 5473 /* FIXME: can we really do this unconditionally? */
5474 sysfs_remove_group(&tpacpi_sensors_pdev->dev.kobj, &fan_attr_group);
35ff8b9f
HMH		 5475 driver_remove_file(&tpacpi_hwmon_pdriver.driver,
5476 &driver_attr_fan_watchdog);
40ca9fdf 5477
b21a15f6
HMH		 5478 cancel_delayed_work(&fan_watchdog_task);
5479 flush_scheduled_work();
56b6aeb0
HMH		 5480}
5481
5482static int fan_read(char *p)
5483{
5484 int len = 0;
5485 int rc;
5486 u8 status;
5487 unsigned int speed = 0;
5488
5489 switch (fan_status_access_mode) {
efa27145 5490 case TPACPI_FAN_RD_ACPI_GFAN:
56b6aeb0 5491 /* 570, 600e/x, 770e, 770x */
35ff8b9f
HMH		 5492 rc = fan_get_status_safe(&status);
5493 if (rc < 0)
56b6aeb0
HMH		 5494 return rc;
5495
5496 len += sprintf(p + len, "status:\t\t%s\n"
5497 "level:\t\t%d\n",
5498 (status != 0) ? "enabled" : "disabled", status);
5499 break;
5500
efa27145 5501 case TPACPI_FAN_RD_TPEC:
56b6aeb0 5502 /* all except 570, 600e/x, 770e, 770x */
35ff8b9f
HMH		 5503 rc = fan_get_status_safe(&status);
5504 if (rc < 0)
56b6aeb0
HMH		 5505 return rc;
5506
d8fd94d9 5507 if (unlikely(tp_features.fan_ctrl_status_undef)) {
56b6aeb0 5508 if (status != fan_control_initial_status)
d8fd94d9 5509 tp_features.fan_ctrl_status_undef = 0;
56b6aeb0
HMH		 5510 else
5511 /* Return most likely status. In fact, it
5512 * might be the only possible status */
efa27145 5513 status = TP_EC_FAN_AUTO;
56b6aeb0
HMH		 5514 }
5515
5516 len += sprintf(p + len, "status:\t\t%s\n",
5517 (status != 0) ? "enabled" : "disabled");
5518
35ff8b9f
HMH		 5519 rc = fan_get_speed(&speed);
5520 if (rc < 0)
56b6aeb0
HMH		 5521 return rc;
5522
5523 len += sprintf(p + len, "speed:\t\t%d\n", speed);
5524
efa27145 5525 if (status & TP_EC_FAN_FULLSPEED)
56b6aeb0
HMH		 5526 /* Disengaged mode takes precedence */
5527 len += sprintf(p + len, "level:\t\tdisengaged\n");
efa27145 5528 else if (status & TP_EC_FAN_AUTO)
56b6aeb0
HMH		 5529 len += sprintf(p + len, "level:\t\tauto\n");
5530 else
5531 len += sprintf(p + len, "level:\t\t%d\n", status);
5532 break;
5533
efa27145 5534 case TPACPI_FAN_NONE:
56b6aeb0
HMH		 5535 default:
5536 len += sprintf(p + len, "status:\t\tnot supported\n");
5537 }
5538
efa27145 5539 if (fan_control_commands & TPACPI_FAN_CMD_LEVEL) {
56b6aeb0
HMH		 5540 len += sprintf(p + len, "commands:\tlevel <level>");
5541
5542 switch (fan_control_access_mode) {
efa27145 5543 case TPACPI_FAN_WR_ACPI_SFAN:
56b6aeb0
HMH		 5544 len += sprintf(p + len, " (<level> is 0-7)\n");
5545 break;
5546
5547 default:
5548 len += sprintf(p + len, " (<level> is 0-7, "
fe98a52c 5549 "auto, disengaged, full-speed)\n");
56b6aeb0
HMH		 5550 break;
5551 }
5552 }
18ad7996 5553
efa27145 5554 if (fan_control_commands & TPACPI_FAN_CMD_ENABLE)
56b6aeb0 5555 len += sprintf(p + len, "commands:\tenable, disable\n"
35ff8b9f
HMH		 5556 "commands:\twatchdog <timeout> (<timeout> "
5557 "is 0 (off), 1-120 (seconds))\n");
1da177e4 5558
efa27145 5559 if (fan_control_commands & TPACPI_FAN_CMD_SPEED)
56b6aeb0
HMH		 5560 len += sprintf(p + len, "commands:\tspeed <speed>"
5561 " (<speed> is 0-65535)\n");
5562
5563 return len;
78f81cc4
BD		 5564}
5565
18ad7996
HMH		 5566static int fan_write_cmd_level(const char *cmd, int *rc)
5567{
5568 int level;
5569
a12095c2 5570 if (strlencmp(cmd, "level auto") == 0)
efa27145 5571 level = TP_EC_FAN_AUTO;
fe98a52c 5572 else if ((strlencmp(cmd, "level disengaged") == 0) |
35ff8b9f 5573 (strlencmp(cmd, "level full-speed") == 0))
efa27145 5574 level = TP_EC_FAN_FULLSPEED;
a12095c2 5575 else if (sscanf(cmd, "level %d", &level) != 1)
18ad7996
HMH		 5576 return 0;
5577
35ff8b9f
HMH		 5578 *rc = fan_set_level_safe(level);
5579 if (*rc == -ENXIO)
e0c7dfe7 5580 printk(TPACPI_ERR "level command accepted for unsupported "
18ad7996
HMH		 5581 "access mode %d", fan_control_access_mode);
5582
5583 return 1;
5584}
5585
5586static int fan_write_cmd_enable(const char *cmd, int *rc)
5587{
5588 if (strlencmp(cmd, "enable") != 0)
5589 return 0;
5590
35ff8b9f
HMH		 5591 *rc = fan_set_enable();
5592 if (*rc == -ENXIO)
e0c7dfe7 5593 printk(TPACPI_ERR "enable command accepted for unsupported "
18ad7996
HMH		 5594 "access mode %d", fan_control_access_mode);
5595
5596 return 1;
5597}
5598
5599static int fan_write_cmd_disable(const char *cmd, int *rc)
5600{
5601 if (strlencmp(cmd, "disable") != 0)
5602 return 0;
5603
35ff8b9f
HMH		 5604 *rc = fan_set_disable();
5605 if (*rc == -ENXIO)
e0c7dfe7 5606 printk(TPACPI_ERR "disable command accepted for unsupported "
18ad7996
HMH		 5607 "access mode %d", fan_control_access_mode);
5608
5609 return 1;
5610}
5611
5612static int fan_write_cmd_speed(const char *cmd, int *rc)
5613{
5614 int speed;
5615
a8b7a662
HMH		 5616 /* TODO:
5617 * Support speed <low> <medium> <high> ? */
5618
18ad7996
HMH		 5619 if (sscanf(cmd, "speed %d", &speed) != 1)
5620 return 0;
5621
35ff8b9f
HMH		 5622 *rc = fan_set_speed(speed);
5623 if (*rc == -ENXIO)
e0c7dfe7 5624 printk(TPACPI_ERR "speed command accepted for unsupported "
18ad7996
HMH		 5625 "access mode %d", fan_control_access_mode);
5626
5627 return 1;
5628}
5629
16663a87
HMH		 5630static int fan_write_cmd_watchdog(const char *cmd, int *rc)
5631{
5632 int interval;
5633
5634 if (sscanf(cmd, "watchdog %d", &interval) != 1)
5635 return 0;
5636
5637 if (interval < 0 || interval > 120)
5638 *rc = -EINVAL;
5639 else
5640 fan_watchdog_maxinterval = interval;
5641
5642 return 1;
5643}
5644
18ad7996
HMH		 5645static int fan_write(char *buf)
5646{
5647 char *cmd;
5648 int rc = 0;
5649
5650 while (!rc && (cmd = next_cmd(&buf))) {
efa27145 5651 if (!((fan_control_commands & TPACPI_FAN_CMD_LEVEL) &&
18ad7996 5652 fan_write_cmd_level(cmd, &rc)) &&
efa27145 5653 !((fan_control_commands & TPACPI_FAN_CMD_ENABLE) &&
18ad7996 5654 (fan_write_cmd_enable(cmd, &rc) ||
16663a87
HMH		 5655 fan_write_cmd_disable(cmd, &rc) ||
5656 fan_write_cmd_watchdog(cmd, &rc))) &&
efa27145 5657 !((fan_control_commands & TPACPI_FAN_CMD_SPEED) &&
18ad7996
HMH		 5658 fan_write_cmd_speed(cmd, &rc))
5659 )
5660 rc = -EINVAL;
16663a87
HMH		 5661 else if (!rc)
5662 fan_watchdog_reset();
18ad7996
HMH		 5663 }
5664
5665 return rc;
5666}
5667
a5763f22
HMH		 5668static struct ibm_struct fan_driver_data = {
5669 .name = "fan",
5670 .read = fan_read,
5671 .write = fan_write,
5672 .exit = fan_exit,
a5763f22
HMH		 5673};
5674
56b6aeb0
HMH		 5675/****************************************************************************
5676 ****************************************************************************
5677 *
5678 * Infrastructure
5679 *
5680 ****************************************************************************
5681 ****************************************************************************/
5682
7fd40029
HMH		 5683/* sysfs name ---------------------------------------------------------- */
5684static ssize_t thinkpad_acpi_pdev_name_show(struct device *dev,
5685 struct device_attribute *attr,
5686 char *buf)
5687{
e0c7dfe7 5688 return snprintf(buf, PAGE_SIZE, "%s\n", TPACPI_NAME);
7fd40029
HMH		 5689}
5690
5691static struct device_attribute dev_attr_thinkpad_acpi_pdev_name =
5692 __ATTR(name, S_IRUGO, thinkpad_acpi_pdev_name_show, NULL);
5693
5694/* --------------------------------------------------------------------- */
5695
56b6aeb0 5696/* /proc support */
94954cc6 5697static struct proc_dir_entry *proc_dir;
16663a87 5698
56b6aeb0
HMH		 5699/*
5700 * Module and infrastructure proble, init and exit handling
5701 */
1da177e4 5702
b21a15f6
HMH		 5703static int force_load;
5704
fe08bc4b 5705#ifdef CONFIG_THINKPAD_ACPI_DEBUG
a5763f22 5706static const char * __init str_supported(int is_supported)
fe08bc4b 5707{
a5763f22 5708 static char text_unsupported[] __initdata = "not supported";
fe08bc4b 5709
a5763f22 5710 return (is_supported)? &text_unsupported[4] : &text_unsupported[0];
fe08bc4b
HMH		 5711}
5712#endif /* CONFIG_THINKPAD_ACPI_DEBUG */
5713
b21a15f6
HMH		 5714static void ibm_exit(struct ibm_struct *ibm)
5715{
5716 dbg_printk(TPACPI_DBG_EXIT, "removing %s\n", ibm->name);
5717
5718 list_del_init(&ibm->all_drivers);
5719
5720 if (ibm->flags.acpi_notify_installed) {
5721 dbg_printk(TPACPI_DBG_EXIT,
5722 "%s: acpi_remove_notify_handler\n", ibm->name);
5723 BUG_ON(!ibm->acpi);
5724 acpi_remove_notify_handler(*ibm->acpi->handle,
5725 ibm->acpi->type,
5726 dispatch_acpi_notify);
5727 ibm->flags.acpi_notify_installed = 0;
5728 ibm->flags.acpi_notify_installed = 0;
5729 }
5730
5731 if (ibm->flags.proc_created) {
5732 dbg_printk(TPACPI_DBG_EXIT,
5733 "%s: remove_proc_entry\n", ibm->name);
5734 remove_proc_entry(ibm->name, proc_dir);
5735 ibm->flags.proc_created = 0;
5736 }
5737
5738 if (ibm->flags.acpi_driver_registered) {
5739 dbg_printk(TPACPI_DBG_EXIT,
5740 "%s: acpi_bus_unregister_driver\n", ibm->name);
5741 BUG_ON(!ibm->acpi);
5742 acpi_bus_unregister_driver(ibm->acpi->driver);
5743 kfree(ibm->acpi->driver);
5744 ibm->acpi->driver = NULL;
5745 ibm->flags.acpi_driver_registered = 0;
5746 }
5747
5748 if (ibm->flags.init_called && ibm->exit) {
5749 ibm->exit();
5750 ibm->flags.init_called = 0;
5751 }
5752
5753 dbg_printk(TPACPI_DBG_INIT, "finished removing %s\n", ibm->name);
5754}
f74a27d4 5755
a5763f22 5756static int __init ibm_init(struct ibm_init_struct *iibm)
1da177e4
LT		 5757{
5758 int ret;
a5763f22 5759 struct ibm_struct *ibm = iibm->data;
1da177e4
LT		 5760 struct proc_dir_entry *entry;
5761
a5763f22
HMH		 5762 BUG_ON(ibm == NULL);
5763
5764 INIT_LIST_HEAD(&ibm->all_drivers);
5765
92641177 5766 if (ibm->flags.experimental && !experimental)
1da177e4
LT		 5767 return 0;
5768
fe08bc4b
HMH		 5769 dbg_printk(TPACPI_DBG_INIT,
5770 "probing for %s\n", ibm->name);
5771
a5763f22
HMH		 5772 if (iibm->init) {
5773 ret = iibm->init(iibm);
5fba344c
HMH		 5774 if (ret > 0)
5775 return 0; /* probe failed */
5776 if (ret)
1da177e4 5777 return ret;
a5763f22 5778
92641177 5779 ibm->flags.init_called = 1;
1da177e4
LT		 5780 }
5781
8d376cd6
HMH		 5782 if (ibm->acpi) {
5783 if (ibm->acpi->hid) {
5784 ret = register_tpacpi_subdriver(ibm);
5785 if (ret)
5786 goto err_out;
5787 }
5fba344c 5788
8d376cd6
HMH		 5789 if (ibm->acpi->notify) {
5790 ret = setup_acpi_notify(ibm);
5791 if (ret == -ENODEV) {
e0c7dfe7 5792 printk(TPACPI_NOTICE "disabling subdriver %s\n",
8d376cd6
HMH		 5793 ibm->name);
5794 ret = 0;
5795 goto err_out;
5796 }
5797 if (ret < 0)
5798 goto err_out;
5fba344c 5799 }
5fba344c
HMH		 5800 }
5801
fe08bc4b
HMH		 5802 dbg_printk(TPACPI_DBG_INIT,
5803 "%s installed\n", ibm->name);
5804
78f81cc4
BD		 5805 if (ibm->read) {
5806 entry = create_proc_entry(ibm->name,
5807 S_IFREG | S_IRUGO | S_IWUSR,
5808 proc_dir);
5809 if (!entry) {
e0c7dfe7 5810 printk(TPACPI_ERR "unable to create proc entry %s\n",
78f81cc4 5811 ibm->name);
5fba344c
HMH		 5812 ret = -ENODEV;
5813 goto err_out;
78f81cc4
BD		 5814 }
5815 entry->owner = THIS_MODULE;
5816 entry->data = ibm;
8d376cd6 5817 entry->read_proc = &dispatch_procfs_read;
78f81cc4 5818 if (ibm->write)
8d376cd6 5819 entry->write_proc = &dispatch_procfs_write;
92641177 5820 ibm->flags.proc_created = 1;
78f81cc4 5821 }
1da177e4 5822
a5763f22
HMH		 5823 list_add_tail(&ibm->all_drivers, &tpacpi_all_drivers);
5824
1da177e4 5825 return 0;
5fba344c
HMH		 5826
5827err_out:
fe08bc4b
HMH		 5828 dbg_printk(TPACPI_DBG_INIT,
5829 "%s: at error exit path with result %d\n",
5830 ibm->name, ret);
5831
5fba344c
HMH		 5832 ibm_exit(ibm);
5833 return (ret < 0)? ret : 0;
1da177e4
LT		 5834}
5835
56b6aeb0
HMH		 5836/* Probing */
5837
d5a2f2f1 5838static void __init get_thinkpad_model_data(struct thinkpad_id_data *tp)
1da177e4 5839{
1855256c 5840 const struct dmi_device *dev = NULL;
56b6aeb0 5841 char ec_fw_string[18];
1da177e4 5842
d5a2f2f1
HMH		 5843 if (!tp)
5844 return;
5845
5846 memset(tp, 0, sizeof(*tp));
5847
5848 if (dmi_name_in_vendors("IBM"))
5849 tp->vendor = PCI_VENDOR_ID_IBM;
5850 else if (dmi_name_in_vendors("LENOVO"))
5851 tp->vendor = PCI_VENDOR_ID_LENOVO;
5852 else
5853 return;
5854
5855 tp->bios_version_str = kstrdup(dmi_get_system_info(DMI_BIOS_VERSION),
5856 GFP_KERNEL);
5857 if (!tp->bios_version_str)
5858 return;
5859 tp->bios_model = tp->bios_version_str[0]
5860 | (tp->bios_version_str[1] << 8);
5861
56b6aeb0
HMH		 5862 /*
5863 * ThinkPad T23 or newer, A31 or newer, R50e or newer,
5864 * X32 or newer, all Z series; Some models must have an
5865 * up-to-date BIOS or they will not be detected.
5866 *
5867 * See http://thinkwiki.org/wiki/List_of_DMI_IDs
5868 */
5869 while ((dev = dmi_find_device(DMI_DEV_TYPE_OEM_STRING, NULL, dev))) {
5870 if (sscanf(dev->name,
5871 "IBM ThinkPad Embedded Controller -[%17c",
5872 ec_fw_string) == 1) {
5873 ec_fw_string[sizeof(ec_fw_string) - 1] = 0;
5874 ec_fw_string[strcspn(ec_fw_string, " ]")] = 0;
d5a2f2f1
HMH		 5875
5876 tp->ec_version_str = kstrdup(ec_fw_string, GFP_KERNEL);
5877 tp->ec_model = ec_fw_string[0]
5878 | (ec_fw_string[1] << 8);
5879 break;
78f81cc4 5880 }
1da177e4 5881 }
d5a2f2f1
HMH		 5882
5883 tp->model_str = kstrdup(dmi_get_system_info(DMI_PRODUCT_VERSION),
5884 GFP_KERNEL);
5885 if (strnicmp(tp->model_str, "ThinkPad", 8) != 0) {
5886 kfree(tp->model_str);
5887 tp->model_str = NULL;
5888 }
8c74adbc
HMH		 5889
5890 tp->nummodel_str = kstrdup(dmi_get_system_info(DMI_PRODUCT_NAME),
5891 GFP_KERNEL);
1da177e4
LT		 5892}
5893
5fba344c
HMH		 5894static int __init probe_for_thinkpad(void)
5895{
5896 int is_thinkpad;
5897
5898 if (acpi_disabled)
5899 return -ENODEV;
5900
5901 /*
5902 * Non-ancient models have better DMI tagging, but very old models
5903 * don't.
5904 */
d5a2f2f1 5905 is_thinkpad = (thinkpad_id.model_str != NULL);
5fba344c
HMH		 5906
5907 /* ec is required because many other handles are relative to it */
e0c7dfe7 5908 TPACPI_ACPIHANDLE_INIT(ec);
5fba344c
HMH		 5909 if (!ec_handle) {
5910 if (is_thinkpad)
e0c7dfe7 5911 printk(TPACPI_ERR
5fba344c
HMH		 5912 "Not yet supported ThinkPad detected!\n");
5913 return -ENODEV;
5914 }
5915
0dcef77c
HMH		 5916 /*
5917 * Risks a regression on very old machines, but reduces potential
5918 * false positives a damn great deal
5919 */
5920 if (!is_thinkpad)
d5a2f2f1 5921 is_thinkpad = (thinkpad_id.vendor == PCI_VENDOR_ID_IBM);
0dcef77c
HMH		 5922
5923 if (!is_thinkpad && !force_load)
5924 return -ENODEV;
5925
5fba344c
HMH		 5926 return 0;
5927}
5928
5929
56b6aeb0 5930/* Module init, exit, parameters */
1da177e4 5931
a5763f22
HMH		 5932static struct ibm_init_struct ibms_init[] __initdata = {
5933 {
5934 .init = thinkpad_acpi_driver_init,
5935 .data = &thinkpad_acpi_driver_data,
5936 },
5937 {
5938 .init = hotkey_init,
5939 .data = &hotkey_driver_data,
5940 },
5941 {
5942 .init = bluetooth_init,
5943 .data = &bluetooth_driver_data,
5944 },
5945 {
5946 .init = wan_init,
5947 .data = &wan_driver_data,
5948 },
d7c1d17d 5949#ifdef CONFIG_THINKPAD_ACPI_VIDEO
a5763f22
HMH		 5950 {
5951 .init = video_init,
5952 .data = &video_driver_data,
5953 },
d7c1d17d 5954#endif
a5763f22
HMH		 5955 {
5956 .init = light_init,
5957 .data = &light_driver_data,
5958 },
5959#ifdef CONFIG_THINKPAD_ACPI_DOCK
5960 {
5961 .init = dock_init,
5962 .data = &dock_driver_data[0],
5963 },
5964 {
d94a7f16 5965 .init = dock_init2,
a5763f22
HMH		 5966 .data = &dock_driver_data[1],
5967 },
5968#endif
5969#ifdef CONFIG_THINKPAD_ACPI_BAY
5970 {
5971 .init = bay_init,
5972 .data = &bay_driver_data,
5973 },
5974#endif
5975 {
5976 .init = cmos_init,
5977 .data = &cmos_driver_data,
5978 },
5979 {
5980 .init = led_init,
5981 .data = &led_driver_data,
5982 },
5983 {
5984 .init = beep_init,
5985 .data = &beep_driver_data,
5986 },
5987 {
5988 .init = thermal_init,
5989 .data = &thermal_driver_data,
5990 },
5991 {
5992 .data = &ecdump_driver_data,
5993 },
5994 {
5995 .init = brightness_init,
5996 .data = &brightness_driver_data,
5997 },
5998 {
5999 .data = &volume_driver_data,
6000 },
6001 {
6002 .init = fan_init,
6003 .data = &fan_driver_data,
6004 },
6005};
6006
3945ac36 6007static int __init set_ibm_param(const char *val, struct kernel_param *kp)
1da177e4
LT		 6008{
6009 unsigned int i;
a5763f22 6010 struct ibm_struct *ibm;
1da177e4 6011
59f91ff1
HMH		 6012 if (!kp || !kp->name || !val)
6013 return -EINVAL;
6014
a5763f22
HMH		 6015 for (i = 0; i < ARRAY_SIZE(ibms_init); i++) {
6016 ibm = ibms_init[i].data;
59f91ff1
HMH		 6017 WARN_ON(ibm == NULL);
6018
6019 if (!ibm || !ibm->name)
6020 continue;
a5763f22
HMH		 6021
6022 if (strcmp(ibm->name, kp->name) == 0 && ibm->write) {
6023 if (strlen(val) > sizeof(ibms_init[i].param) - 2)
78f81cc4 6024 return -ENOSPC;
a5763f22
HMH		 6025 strcpy(ibms_init[i].param, val);
6026 strcat(ibms_init[i].param, ",");
78f81cc4
BD		 6027 return 0;
6028 }
a5763f22 6029 }
1da177e4 6030
1da177e4
LT		 6031 return -EINVAL;
6032}
6033
56b6aeb0 6034module_param(experimental, int, 0);
f68080f8 6035MODULE_PARM_DESC(experimental,
35ff8b9f 6036 "Enables experimental features when non-zero");
56b6aeb0 6037
132ce091 6038module_param_named(debug, dbg_level, uint, 0);
f68080f8 6039MODULE_PARM_DESC(debug, "Sets debug level bit-mask");
132ce091 6040
86cc9445 6041module_param(force_load, bool, 0);
f68080f8 6042MODULE_PARM_DESC(force_load,
35ff8b9f
HMH		 6043 "Attempts to load the driver even on a "
6044 "mis-identified ThinkPad when true");
0dcef77c 6045
86cc9445 6046module_param_named(fan_control, fan_control_allowed, bool, 0);
f68080f8 6047MODULE_PARM_DESC(fan_control,
35ff8b9f 6048 "Enables setting fan parameters features when true");
ecf2a80a 6049
24d3b774 6050module_param_named(brightness_mode, brightness_mode, int, 0);
f68080f8 6051MODULE_PARM_DESC(brightness_mode,
35ff8b9f
HMH		 6052 "Selects brightness control strategy: "
6053 "0=auto, 1=EC, 2=CMOS, 3=both");
24d3b774 6054
87cc537a 6055module_param(brightness_enable, uint, 0);
f68080f8 6056MODULE_PARM_DESC(brightness_enable,
35ff8b9f 6057 "Enables backlight control when 1, disables when 0");
87cc537a 6058
ff80f137 6059module_param(hotkey_report_mode, uint, 0);
f68080f8 6060MODULE_PARM_DESC(hotkey_report_mode,
35ff8b9f
HMH		 6061 "used for backwards compatibility with userspace, "
6062 "see documentation");
ff80f137 6063
e0c7dfe7 6064#define TPACPI_PARAM(feature) \
f68080f8 6065 module_param_call(feature, set_ibm_param, NULL, NULL, 0); \
cbb14842 6066 MODULE_PARM_DESC(feature, "Simulates thinkpad-acpi procfs command " \
35ff8b9f 6067 "at module load, see documentation")
1da177e4 6068
e0c7dfe7
HMH		 6069TPACPI_PARAM(hotkey);
6070TPACPI_PARAM(bluetooth);
6071TPACPI_PARAM(video);
6072TPACPI_PARAM(light);
85998248 6073#ifdef CONFIG_THINKPAD_ACPI_DOCK
e0c7dfe7 6074TPACPI_PARAM(dock);
63e5f248 6075#endif
85998248 6076#ifdef CONFIG_THINKPAD_ACPI_BAY
e0c7dfe7 6077TPACPI_PARAM(bay);
85998248 6078#endif /* CONFIG_THINKPAD_ACPI_BAY */
e0c7dfe7
HMH		 6079TPACPI_PARAM(cmos);
6080TPACPI_PARAM(led);
6081TPACPI_PARAM(beep);
6082TPACPI_PARAM(ecdump);
6083TPACPI_PARAM(brightness);
6084TPACPI_PARAM(volume);
6085TPACPI_PARAM(fan);
78f81cc4 6086
b21a15f6
HMH		 6087static void thinkpad_acpi_module_exit(void)
6088{
6089 struct ibm_struct *ibm, *itmp;
6090
6091 tpacpi_lifecycle = TPACPI_LIFE_EXITING;
6092
6093 list_for_each_entry_safe_reverse(ibm, itmp,
6094 &tpacpi_all_drivers,
6095 all_drivers) {
6096 ibm_exit(ibm);
6097 }
6098
6099 dbg_printk(TPACPI_DBG_INIT, "finished subdriver exit path...\n");
6100
6101 if (tpacpi_inputdev) {
6102 if (tp_features.input_device_registered)
6103 input_unregister_device(tpacpi_inputdev);
6104 else
6105 input_free_device(tpacpi_inputdev);
6106 }
6107
6108 if (tpacpi_hwmon)
6109 hwmon_device_unregister(tpacpi_hwmon);
6110
6111 if (tp_features.sensors_pdev_attrs_registered)
6112 device_remove_file(&tpacpi_sensors_pdev->dev,
6113 &dev_attr_thinkpad_acpi_pdev_name);
6114 if (tpacpi_sensors_pdev)
6115 platform_device_unregister(tpacpi_sensors_pdev);
6116 if (tpacpi_pdev)
6117 platform_device_unregister(tpacpi_pdev);
6118
6119 if (tp_features.sensors_pdrv_attrs_registered)
6120 tpacpi_remove_driver_attributes(&tpacpi_hwmon_pdriver.driver);
6121 if (tp_features.platform_drv_attrs_registered)
6122 tpacpi_remove_driver_attributes(&tpacpi_pdriver.driver);
6123
6124 if (tp_features.sensors_pdrv_registered)
6125 platform_driver_unregister(&tpacpi_hwmon_pdriver);
6126
6127 if (tp_features.platform_drv_registered)
6128 platform_driver_unregister(&tpacpi_pdriver);
6129
6130 if (proc_dir)
e0c7dfe7 6131 remove_proc_entry(TPACPI_PROC_DIR, acpi_root_dir);
b21a15f6
HMH		 6132
6133 kfree(thinkpad_id.bios_version_str);
6134 kfree(thinkpad_id.ec_version_str);
6135 kfree(thinkpad_id.model_str);
6136}
6137
f74a27d4 6138
1def7115 6139static int __init thinkpad_acpi_module_init(void)
1da177e4
LT		 6140{
6141 int ret, i;
6142
8fef502e
HMH		 6143 tpacpi_lifecycle = TPACPI_LIFE_INIT;
6144
ff80f137
HMH		 6145 /* Parameter checking */
6146 if (hotkey_report_mode > 2)
6147 return -EINVAL;
6148
54ae1501 6149 /* Driver-level probe */
d5a2f2f1
HMH		 6150
6151 get_thinkpad_model_data(&thinkpad_id);
5fba344c 6152 ret = probe_for_thinkpad();
d5a2f2f1
HMH		 6153 if (ret) {
6154 thinkpad_acpi_module_exit();
5fba344c 6155 return ret;
d5a2f2f1 6156 }
1da177e4 6157
54ae1501 6158 /* Driver initialization */
d5a2f2f1 6159
e0c7dfe7
HMH		 6160 TPACPI_ACPIHANDLE_INIT(ecrd);
6161 TPACPI_ACPIHANDLE_INIT(ecwr);
1da177e4 6162
e0c7dfe7 6163 proc_dir = proc_mkdir(TPACPI_PROC_DIR, acpi_root_dir);
1da177e4 6164 if (!proc_dir) {
35ff8b9f
HMH		 6165 printk(TPACPI_ERR
6166 "unable to create proc dir " TPACPI_PROC_DIR);
1def7115 6167 thinkpad_acpi_module_exit();
1da177e4
LT		 6168 return -ENODEV;
6169 }
6170 proc_dir->owner = THIS_MODULE;
78f81cc4 6171
54ae1501
HMH		 6172 ret = platform_driver_register(&tpacpi_pdriver);
6173 if (ret) {
35ff8b9f
HMH		 6174 printk(TPACPI_ERR
6175 "unable to register main platform driver\n");
54ae1501
HMH		 6176 thinkpad_acpi_module_exit();
6177 return ret;
6178 }
ac36393d
HMH		 6179 tp_features.platform_drv_registered = 1;
6180
7fd40029
HMH		 6181 ret = platform_driver_register(&tpacpi_hwmon_pdriver);
6182 if (ret) {
35ff8b9f
HMH		 6183 printk(TPACPI_ERR
6184 "unable to register hwmon platform driver\n");
7fd40029
HMH		 6185 thinkpad_acpi_module_exit();
6186 return ret;
6187 }
6188 tp_features.sensors_pdrv_registered = 1;
6189
176750d6 6190 ret = tpacpi_create_driver_attributes(&tpacpi_pdriver.driver);
2369cc94
HMH		 6191 if (!ret) {
6192 tp_features.platform_drv_attrs_registered = 1;
35ff8b9f
HMH		 6193 ret = tpacpi_create_driver_attributes(
6194 &tpacpi_hwmon_pdriver.driver);
2369cc94 6195 }
176750d6 6196 if (ret) {
35ff8b9f
HMH		 6197 printk(TPACPI_ERR
6198 "unable to create sysfs driver attributes\n");
176750d6
HMH		 6199 thinkpad_acpi_module_exit();
6200 return ret;
6201 }
2369cc94 6202 tp_features.sensors_pdrv_attrs_registered = 1;
176750d6 6203
54ae1501
HMH		 6204
6205 /* Device initialization */
e0c7dfe7 6206 tpacpi_pdev = platform_device_register_simple(TPACPI_DRVR_NAME, -1,
54ae1501
HMH		 6207 NULL, 0);
6208 if (IS_ERR(tpacpi_pdev)) {
6209 ret = PTR_ERR(tpacpi_pdev);
6210 tpacpi_pdev = NULL;
e0c7dfe7 6211 printk(TPACPI_ERR "unable to register platform device\n");
54ae1501
HMH		 6212 thinkpad_acpi_module_exit();
6213 return ret;
6214 }
7fd40029 6215 tpacpi_sensors_pdev = platform_device_register_simple(
35ff8b9f
HMH		 6216 TPACPI_HWMON_DRVR_NAME,
6217 -1, NULL, 0);
7fd40029
HMH		 6218 if (IS_ERR(tpacpi_sensors_pdev)) {
6219 ret = PTR_ERR(tpacpi_sensors_pdev);
6220 tpacpi_sensors_pdev = NULL;
35ff8b9f
HMH		 6221 printk(TPACPI_ERR
6222 "unable to register hwmon platform device\n");
7fd40029
HMH		 6223 thinkpad_acpi_module_exit();
6224 return ret;
6225 }
6226 ret = device_create_file(&tpacpi_sensors_pdev->dev,
6227 &dev_attr_thinkpad_acpi_pdev_name);
6228 if (ret) {
e0c7dfe7 6229 printk(TPACPI_ERR
35ff8b9f 6230 "unable to create sysfs hwmon device attributes\n");
7fd40029
HMH		 6231 thinkpad_acpi_module_exit();
6232 return ret;
6233 }
6234 tp_features.sensors_pdev_attrs_registered = 1;
6235 tpacpi_hwmon = hwmon_device_register(&tpacpi_sensors_pdev->dev);
54ae1501
HMH		 6236 if (IS_ERR(tpacpi_hwmon)) {
6237 ret = PTR_ERR(tpacpi_hwmon);
6238 tpacpi_hwmon = NULL;
e0c7dfe7 6239 printk(TPACPI_ERR "unable to register hwmon device\n");
54ae1501
HMH		 6240 thinkpad_acpi_module_exit();
6241 return ret;
6242 }
8523ed6f 6243 mutex_init(&tpacpi_inputdev_send_mutex);
7f5d1cd6
HMH		 6244 tpacpi_inputdev = input_allocate_device();
6245 if (!tpacpi_inputdev) {
e0c7dfe7 6246 printk(TPACPI_ERR "unable to allocate input device\n");
7f5d1cd6
HMH		 6247 thinkpad_acpi_module_exit();
6248 return -ENOMEM;
6249 } else {
6250 /* Prepare input device, but don't register */
6251 tpacpi_inputdev->name = "ThinkPad Extra Buttons";
e0c7dfe7 6252 tpacpi_inputdev->phys = TPACPI_DRVR_NAME "/input0";
7f5d1cd6 6253 tpacpi_inputdev->id.bustype = BUS_HOST;
edf0e0e5
HMH		 6254 tpacpi_inputdev->id.vendor = (thinkpad_id.vendor) ?
6255 thinkpad_id.vendor :
6256 PCI_VENDOR_ID_IBM;
7f5d1cd6
HMH		 6257 tpacpi_inputdev->id.product = TPACPI_HKEY_INPUT_PRODUCT;
6258 tpacpi_inputdev->id.version = TPACPI_HKEY_INPUT_VERSION;
6259 }
a5763f22
HMH		 6260 for (i = 0; i < ARRAY_SIZE(ibms_init); i++) {
6261 ret = ibm_init(&ibms_init[i]);
6262 if (ret >= 0 && *ibms_init[i].param)
6263 ret = ibms_init[i].data->write(ibms_init[i].param);
1da177e4 6264 if (ret < 0) {
1def7115 6265 thinkpad_acpi_module_exit();
1da177e4
LT		 6266 return ret;
6267 }
6268 }
7f5d1cd6
HMH		 6269 ret = input_register_device(tpacpi_inputdev);
6270 if (ret < 0) {
e0c7dfe7 6271 printk(TPACPI_ERR "unable to register input device\n");
7f5d1cd6
HMH		 6272 thinkpad_acpi_module_exit();
6273 return ret;
6274 } else {
6275 tp_features.input_device_registered = 1;
6276 }
1da177e4 6277
8fef502e 6278 tpacpi_lifecycle = TPACPI_LIFE_RUNNING;
1da177e4
LT		 6279 return 0;
6280}
6281
f68080f8
HMH		 6282/* Please remove this in year 2009 */
6283MODULE_ALIAS("ibm_acpi");
6284
6285/*
6286 * DMI matching for module autoloading
6287 *
6288 * See http://thinkwiki.org/wiki/List_of_DMI_IDs
6289 * See http://thinkwiki.org/wiki/BIOS_Upgrade_Downloads
6290 *
6291 * Only models listed in thinkwiki will be supported, so add yours
6292 * if it is not there yet.
6293 */
6294#define IBM_BIOS_MODULE_ALIAS(__type) \
6295 MODULE_ALIAS("dmi:bvnIBM:bvr" __type "ET??WW")
6296
6297/* Non-ancient thinkpads */
6298MODULE_ALIAS("dmi:bvnIBM:*:svnIBM:*:pvrThinkPad*:rvnIBM:*");
6299MODULE_ALIAS("dmi:bvnLENOVO:*:svnLENOVO:*:pvrThinkPad*:rvnLENOVO:*");
6300
6301/* Ancient thinkpad BIOSes have to be identified by
6302 * BIOS type or model number, and there are far less
6303 * BIOS types than model numbers... */
6304IBM_BIOS_MODULE_ALIAS("I[B,D,H,I,M,N,O,T,W,V,Y,Z]");
6305IBM_BIOS_MODULE_ALIAS("1[0,3,6,8,A-G,I,K,M-P,S,T]");
6306IBM_BIOS_MODULE_ALIAS("K[U,X-Z]");
6307
6308MODULE_AUTHOR("Borislav Deianov, Henrique de Moraes Holschuh");
e0c7dfe7
HMH		 6309MODULE_DESCRIPTION(TPACPI_DESC);
6310MODULE_VERSION(TPACPI_VERSION);
f68080f8
HMH		 6311MODULE_LICENSE("GPL");
6312
1def7115
HMH		 6313module_init(thinkpad_acpi_module_init);
6314module_exit(thinkpad_acpi_module_exit);
ubuntu-bionic-kernel mirror