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hp-wmi: check query return value in hp_wmi_perform_query
[deliverable/linux.git] / drivers / platform / x86 / hp-wmi.c
CommitLineData
62ec30d4
MG		 1/*
2 * HP WMI hotkeys
3 *
4 * Copyright (C) 2008 Red Hat <mjg@redhat.com>
5 *
6 * Portions based on wistron_btns.c:
7 * Copyright (C) 2005 Miloslav Trmac <mitr@volny.cz>
8 * Copyright (C) 2005 Bernhard Rosenkraenzer <bero@arklinux.org>
9 * Copyright (C) 2005 Dmitry Torokhov <dtor@mail.ru>
10 *
11 * This program is free software; you can redistribute it and/or modify
12 * it under the terms of the GNU General Public License as published by
13 * the Free Software Foundation; either version 2 of the License, or
14 * (at your option) any later version.
15 *
16 * This program is distributed in the hope that it will be useful,
17 * but WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 * GNU General Public License for more details.
20 *
21 * You should have received a copy of the GNU General Public License
22 * along with this program; if not, write to the Free Software
23 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
24 */
25
26#include <linux/kernel.h>
27#include <linux/module.h>
28#include <linux/init.h>
5a0e3ad6 29#include <linux/slab.h>
62ec30d4
MG		 30#include <linux/types.h>
31#include <linux/input.h>
4d291ed7 32#include <linux/input/sparse-keymap.h>
62ec30d4
MG		 33#include <linux/platform_device.h>
34#include <linux/acpi.h>
35#include <linux/rfkill.h>
36#include <linux/string.h>
37
38MODULE_AUTHOR("Matthew Garrett <mjg59@srcf.ucam.org>");
39MODULE_DESCRIPTION("HP laptop WMI hotkeys driver");
40MODULE_LICENSE("GPL");
41
42MODULE_ALIAS("wmi:95F24279-4D7B-4334-9387-ACCDC67EF61C");
43MODULE_ALIAS("wmi:5FB7F034-2C63-45e9-BE91-3D44E2C707E4");
44
45#define HPWMI_EVENT_GUID "95F24279-4D7B-4334-9387-ACCDC67EF61C"
46#define HPWMI_BIOS_GUID "5FB7F034-2C63-45e9-BE91-3D44E2C707E4"
47
48#define HPWMI_DISPLAY_QUERY 0x1
49#define HPWMI_HDDTEMP_QUERY 0x2
50#define HPWMI_ALS_QUERY 0x3
871043bc 51#define HPWMI_HARDWARE_QUERY 0x4
62ec30d4 52#define HPWMI_WIRELESS_QUERY 0x5
a8823aef 53#define HPWMI_HOTKEY_QUERY 0xc
62ec30d4 54
a2806c6f 55#define PREFIX "HP WMI: "
1bbdfd59 56#define UNIMP "Unimplemented "
a2806c6f 57
e5fbba85
AJ		 58enum hp_wmi_radio {
59 HPWMI_WIFI = 0,
60 HPWMI_BLUETOOTH = 1,
61 HPWMI_WWAN = 2,
62};
63
751ae808
TR		 64enum hp_wmi_event_ids {
65 HPWMI_DOCK_EVENT = 1,
1bbdfd59
TR		 66 HPWMI_PARK_HDD = 2,
67 HPWMI_SMART_ADAPTER = 3,
751ae808
TR		 68 HPWMI_BEZEL_BUTTON = 4,
69 HPWMI_WIRELESS = 5,
1bbdfd59
TR		 70 HPWMI_CPU_BATTERY_THROTTLE = 6,
71 HPWMI_LOCK_SWITCH = 7,
751ae808
TR		 72};
73
ea79632d 74static int __devinit hp_wmi_bios_setup(struct platform_device *device);
62ec30d4 75static int __exit hp_wmi_bios_remove(struct platform_device *device);
8dd2b426 76static int hp_wmi_resume_handler(struct device *device);
62ec30d4
MG		 77
78struct bios_args {
79 u32 signature;
80 u32 command;
81 u32 commandtype;
82 u32 datasize;
a8ec105c 83 u32 data;
62ec30d4
MG		 84};
85
86struct bios_return {
87 u32 sigpass;
88 u32 return_code;
a8ec105c 89 u32 value;
62ec30d4
MG		 90};
91
9af0e0fb
AH		 92enum hp_return_value {
93 HPWMI_RET_WRONG_SIGNATURE = 0x02,
94 HPWMI_RET_UNKNOWN_COMMAND = 0x03,
95 HPWMI_RET_UNKNOWN_CMDTYPE = 0x04,
96 HPWMI_RET_INVALID_PARAMETERS = 0x05,
97};
98
4d291ed7
DT		 99static const struct key_entry hp_wmi_keymap[] = {
100 { KE_KEY, 0x02, { KEY_BRIGHTNESSUP } },
101 { KE_KEY, 0x03, { KEY_BRIGHTNESSDOWN } },
102 { KE_KEY, 0x20e6, { KEY_PROG1 } },
103 { KE_KEY, 0x20e8, { KEY_MEDIA } },
104 { KE_KEY, 0x2142, { KEY_MEDIA } },
105 { KE_KEY, 0x213b, { KEY_INFO } },
106 { KE_KEY, 0x2169, { KEY_DIRECTION } },
107 { KE_KEY, 0x231b, { KEY_HELP } },
108 { KE_END, 0 }
62ec30d4
MG		 109};
110
111static struct input_dev *hp_wmi_input_dev;
112static struct platform_device *hp_wmi_platform_dev;
113
114static struct rfkill *wifi_rfkill;
115static struct rfkill *bluetooth_rfkill;
116static struct rfkill *wwan_rfkill;
117
47145210 118static const struct dev_pm_ops hp_wmi_pm_ops = {
8dd2b426
FP		 119 .resume = hp_wmi_resume_handler,
120 .restore = hp_wmi_resume_handler,
121};
122
62ec30d4
MG		 123static struct platform_driver hp_wmi_driver = {
124 .driver = {
8dd2b426
FP		 125 .name = "hp-wmi",
126 .owner = THIS_MODULE,
127 .pm = &hp_wmi_pm_ops,
62ec30d4
MG		 128 },
129 .probe = hp_wmi_bios_setup,
130 .remove = hp_wmi_bios_remove,
131};
132
6d96e00c
TR		 133/*
134 * hp_wmi_perform_query
135 *
136 * query: The commandtype -> What should be queried
137 * write: The command -> 0 read, 1 write, 3 ODM specific
138 * buffer: Buffer used as input and/or output
139 * buffersize: Size of buffer
140 *
141 * returns zero on success
142 * an HP WMI query specific error code (which is positive)
143 * -EINVAL if the query was not successful at all
144 * -EINVAL if the output buffer size exceeds buffersize
145 *
146 * Note: The buffersize must at least be the maximum of the input and output
147 * size. E.g. Battery info query (0x7) is defined to have 1 byte input
148 * and 128 byte output. The caller would do:
149 * buffer = kzalloc(128, GFP_KERNEL);
150 * ret = hp_wmi_perform_query(0x7, 0, buffer, 128)
151 */
a8ec105c 152static int hp_wmi_perform_query(int query, int write, u32 *buffer,
6d96e00c 153 int buffersize)
62ec30d4
MG		 154{
155 struct bios_return bios_return;
156 acpi_status status;
157 union acpi_object *obj;
158 struct bios_args args = {
159 .signature = 0x55434553,
160 .command = write ? 0x2 : 0x1,
161 .commandtype = query,
6d96e00c 162 .datasize = buffersize,
a8ec105c 163 .data = *buffer,
62ec30d4
MG		 164 };
165 struct acpi_buffer input = { sizeof(struct bios_args), &args };
166 struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
167
168 status = wmi_evaluate_method(HPWMI_BIOS_GUID, 0, 0x3, &input, &output);
169
170 obj = output.pointer;
171
44ef00e6 172 if (!obj)
62ec30d4 173 return -EINVAL;
44ef00e6
TR		 174 else if (obj->type != ACPI_TYPE_BUFFER) {
175 kfree(obj);
176 return -EINVAL;
177 }
62ec30d4
MG		 178
179 bios_return = *((struct bios_return *)obj->buffer.pointer);
6d96e00c 180
9af0e0fb
AH		 181 if (bios_return.return_code) {
182 if (bios_return.return_code != HPWMI_RET_UNKNOWN_CMDTYPE)
183 printk(KERN_WARNING PREFIX "query 0x%x returned "
184 "error 0x%x\n",
185 query, bios_return.return_code);
186 kfree(obj);
187 return bios_return.return_code;
188 }
189
a8ec105c 190 memcpy(buffer, &bios_return.value, sizeof(bios_return.value));
53c96dfd
ZZ		 191
192 kfree(obj);
6d96e00c 193 return 0;
62ec30d4
MG		 194}
195
196static int hp_wmi_display_state(void)
197{
a8ec105c
MG		 198 int state = 0;
199 int ret = hp_wmi_perform_query(HPWMI_DISPLAY_QUERY, 0, &state,
6d96e00c
TR		 200 sizeof(state));
201 if (ret)
202 return -EINVAL;
203 return state;
62ec30d4
MG		 204}
205
206static int hp_wmi_hddtemp_state(void)
207{
a8ec105c
MG		 208 int state = 0;
209 int ret = hp_wmi_perform_query(HPWMI_HDDTEMP_QUERY, 0, &state,
6d96e00c
TR		 210 sizeof(state));
211 if (ret)
212 return -EINVAL;
213 return state;
62ec30d4
MG		 214}
215
216static int hp_wmi_als_state(void)
217{
a8ec105c
MG		 218 int state = 0;
219 int ret = hp_wmi_perform_query(HPWMI_ALS_QUERY, 0, &state,
6d96e00c
TR		 220 sizeof(state));
221 if (ret)
222 return -EINVAL;
223 return state;
62ec30d4
MG		 224}
225
226static int hp_wmi_dock_state(void)
227{
a8ec105c
MG		 228 int state = 0;
229 int ret = hp_wmi_perform_query(HPWMI_HARDWARE_QUERY, 0, &state,
6d96e00c 230 sizeof(state));
62ec30d4 231
6d96e00c
TR		 232 if (ret)
233 return -EINVAL;
871043bc 234
6d96e00c 235 return state & 0x1;
62ec30d4
MG		 236}
237
871043bc 238static int hp_wmi_tablet_state(void)
62ec30d4 239{
a8ec105c
MG		 240 int state = 0;
241 int ret = hp_wmi_perform_query(HPWMI_HARDWARE_QUERY, 0, &state,
6d96e00c
TR		 242 sizeof(state));
243 if (ret)
871043bc
MG		 244 return ret;
245
6d96e00c 246 return (state & 0x4) ? 1 : 0;
62ec30d4
MG		 247}
248
19d337df 249static int hp_wmi_set_block(void *data, bool blocked)
62ec30d4 250{
e5fbba85
AJ		 251 enum hp_wmi_radio r = (enum hp_wmi_radio) data;
252 int query = BIT(r + 8) | ((!blocked) << r);
6d96e00c 253 int ret;
62ec30d4 254
6d96e00c 255 ret = hp_wmi_perform_query(HPWMI_WIRELESS_QUERY, 1,
a8ec105c 256 &query, sizeof(query));
6d96e00c
TR		 257 if (ret)
258 return -EINVAL;
259 return 0;
62ec30d4
MG		 260}
261
19d337df
JB		 262static const struct rfkill_ops hp_wmi_rfkill_ops = {
263 .set_block = hp_wmi_set_block,
264};
62ec30d4 265
e5fbba85 266static bool hp_wmi_get_sw_state(enum hp_wmi_radio r)
62ec30d4 267{
a8ec105c 268 int wireless = 0;
6d96e00c
TR		 269 int mask;
270 hp_wmi_perform_query(HPWMI_WIRELESS_QUERY, 0,
a8ec105c 271 &wireless, sizeof(wireless));
6d96e00c
TR		 272 /* TBD: Pass error */
273
274 mask = 0x200 << (r * 8);
62ec30d4 275
e5fbba85 276 if (wireless & mask)
19d337df 277 return false;
62ec30d4 278 else
19d337df 279 return true;
62ec30d4
MG		 280}
281
e5fbba85 282static bool hp_wmi_get_hw_state(enum hp_wmi_radio r)
62ec30d4 283{
a8ec105c 284 int wireless = 0;
6d96e00c
TR		 285 int mask;
286 hp_wmi_perform_query(HPWMI_WIRELESS_QUERY, 0,
a8ec105c 287 &wireless, sizeof(wireless));
6d96e00c
TR		 288 /* TBD: Pass error */
289
290 mask = 0x800 << (r * 8);
62ec30d4 291
e5fbba85 292 if (wireless & mask)
19d337df 293 return false;
62ec30d4 294 else
19d337df 295 return true;
62ec30d4
MG		 296}
297
298static ssize_t show_display(struct device *dev, struct device_attribute *attr,
299 char *buf)
300{
301 int value = hp_wmi_display_state();
302 if (value < 0)
303 return -EINVAL;
304 return sprintf(buf, "%d\n", value);
305}
306
307static ssize_t show_hddtemp(struct device *dev, struct device_attribute *attr,
308 char *buf)
309{
310 int value = hp_wmi_hddtemp_state();
311 if (value < 0)
312 return -EINVAL;
313 return sprintf(buf, "%d\n", value);
314}
315
316static ssize_t show_als(struct device *dev, struct device_attribute *attr,
317 char *buf)
318{
319 int value = hp_wmi_als_state();
320 if (value < 0)
321 return -EINVAL;
322 return sprintf(buf, "%d\n", value);
323}
324
325static ssize_t show_dock(struct device *dev, struct device_attribute *attr,
326 char *buf)
327{
328 int value = hp_wmi_dock_state();
329 if (value < 0)
330 return -EINVAL;
331 return sprintf(buf, "%d\n", value);
332}
333
871043bc
MG		 334static ssize_t show_tablet(struct device *dev, struct device_attribute *attr,
335 char *buf)
336{
337 int value = hp_wmi_tablet_state();
338 if (value < 0)
339 return -EINVAL;
340 return sprintf(buf, "%d\n", value);
341}
342
62ec30d4
MG		 343static ssize_t set_als(struct device *dev, struct device_attribute *attr,
344 const char *buf, size_t count)
345{
346 u32 tmp = simple_strtoul(buf, NULL, 10);
a8ec105c 347 int ret = hp_wmi_perform_query(HPWMI_ALS_QUERY, 1, &tmp,
6d96e00c
TR		 348 sizeof(tmp));
349 if (ret)
350 return -EINVAL;
351
62ec30d4
MG		 352 return count;
353}
354
355static DEVICE_ATTR(display, S_IRUGO, show_display, NULL);
356static DEVICE_ATTR(hddtemp, S_IRUGO, show_hddtemp, NULL);
357static DEVICE_ATTR(als, S_IRUGO | S_IWUSR, show_als, set_als);
358static DEVICE_ATTR(dock, S_IRUGO, show_dock, NULL);
871043bc 359static DEVICE_ATTR(tablet, S_IRUGO, show_tablet, NULL);
62ec30d4 360
88429a10 361static void hp_wmi_notify(u32 value, void *context)
62ec30d4
MG		 362{
363 struct acpi_buffer response = { ACPI_ALLOCATE_BUFFER, NULL };
62ec30d4 364 union acpi_object *obj;
8dda6b04 365 u32 event_id, event_data;
a8ec105c 366 int key_code = 0, ret;
8dda6b04 367 u32 *location;
fda11e61 368 acpi_status status;
62ec30d4 369
fda11e61
LB		 370 status = wmi_get_event_data(value, &response);
371 if (status != AE_OK) {
a2806c6f 372 printk(KERN_INFO PREFIX "bad event status 0x%x\n", status);
fda11e61
LB		 373 return;
374 }
62ec30d4
MG		 375
376 obj = (union acpi_object *)response.pointer;
377
c4775062
TR		 378 if (!obj)
379 return;
380 if (obj->type != ACPI_TYPE_BUFFER) {
8dda6b04
TR		 381 printk(KERN_INFO "hp-wmi: Unknown response received %d\n",
382 obj->type);
44ef00e6 383 kfree(obj);
e5fbba85
AJ		 384 return;
385 }
386
8dda6b04
TR		 387 /*
388 * Depending on ACPI version the concatenation of id and event data
389 * inside _WED function will result in a 8 or 16 byte buffer.
390 */
391 location = (u32 *)obj->buffer.pointer;
392 if (obj->buffer.length == 8) {
393 event_id = *location;
394 event_data = *(location + 1);
395 } else if (obj->buffer.length == 16) {
396 event_id = *location;
397 event_data = *(location + 2);
398 } else {
399 printk(KERN_INFO "hp-wmi: Unknown buffer length %d\n",
400 obj->buffer.length);
401 kfree(obj);
402 return;
403 }
44ef00e6 404 kfree(obj);
8dda6b04
TR		 405
406 switch (event_id) {
751ae808 407 case HPWMI_DOCK_EVENT:
e5fbba85
AJ		 408 input_report_switch(hp_wmi_input_dev, SW_DOCK,
409 hp_wmi_dock_state());
410 input_report_switch(hp_wmi_input_dev, SW_TABLET_MODE,
411 hp_wmi_tablet_state());
412 input_sync(hp_wmi_input_dev);
751ae808 413 break;
1bbdfd59
TR		 414 case HPWMI_PARK_HDD:
415 break;
416 case HPWMI_SMART_ADAPTER:
417 break;
751ae808 418 case HPWMI_BEZEL_BUTTON:
6d96e00c 419 ret = hp_wmi_perform_query(HPWMI_HOTKEY_QUERY, 0,
a8ec105c 420 &key_code,
6d96e00c
TR		 421 sizeof(key_code));
422 if (ret)
423 break;
4d291ed7
DT		 424
425 if (!sparse_keymap_report_event(hp_wmi_input_dev,
426 key_code, 1, true))
a2806c6f 427 printk(KERN_INFO PREFIX "Unknown key code - 0x%x\n",
da9a79ba 428 key_code);
751ae808
TR		 429 break;
430 case HPWMI_WIRELESS:
e5fbba85
AJ		 431 if (wifi_rfkill)
432 rfkill_set_states(wifi_rfkill,
433 hp_wmi_get_sw_state(HPWMI_WIFI),
434 hp_wmi_get_hw_state(HPWMI_WIFI));
435 if (bluetooth_rfkill)
436 rfkill_set_states(bluetooth_rfkill,
437 hp_wmi_get_sw_state(HPWMI_BLUETOOTH),
438 hp_wmi_get_hw_state(HPWMI_BLUETOOTH));
439 if (wwan_rfkill)
440 rfkill_set_states(wwan_rfkill,
441 hp_wmi_get_sw_state(HPWMI_WWAN),
442 hp_wmi_get_hw_state(HPWMI_WWAN));
751ae808 443 break;
1bbdfd59
TR		 444 case HPWMI_CPU_BATTERY_THROTTLE:
445 printk(KERN_INFO PREFIX UNIMP "CPU throttle because of 3 Cell"
446 " battery event detected\n");
447 break;
448 case HPWMI_LOCK_SWITCH:
449 break;
751ae808 450 default:
8dda6b04
TR		 451 printk(KERN_INFO PREFIX "Unknown event_id - %d - 0x%x\n",
452 event_id, event_data);
751ae808
TR		 453 break;
454 }
62ec30d4
MG		 455}
456
457static int __init hp_wmi_input_setup(void)
458{
4d291ed7 459 acpi_status status;
62ec30d4
MG		 460 int err;
461
462 hp_wmi_input_dev = input_allocate_device();
bc28596a
AL		 463 if (!hp_wmi_input_dev)
464 return -ENOMEM;
62ec30d4
MG		 465
466 hp_wmi_input_dev->name = "HP WMI hotkeys";
467 hp_wmi_input_dev->phys = "wmi/input0";
468 hp_wmi_input_dev->id.bustype = BUS_HOST;
62ec30d4 469
4d291ed7
DT		 470 __set_bit(EV_SW, hp_wmi_input_dev->evbit);
471 __set_bit(SW_DOCK, hp_wmi_input_dev->swbit);
472 __set_bit(SW_TABLET_MODE, hp_wmi_input_dev->swbit);
473
474 err = sparse_keymap_setup(hp_wmi_input_dev, hp_wmi_keymap, NULL);
475 if (err)
476 goto err_free_dev;
871043bc
MG		 477
478 /* Set initial hardware state */
479 input_report_switch(hp_wmi_input_dev, SW_DOCK, hp_wmi_dock_state());
480 input_report_switch(hp_wmi_input_dev, SW_TABLET_MODE,
481 hp_wmi_tablet_state());
482 input_sync(hp_wmi_input_dev);
483
4d291ed7
DT		 484 status = wmi_install_notify_handler(HPWMI_EVENT_GUID, hp_wmi_notify, NULL);
485 if (ACPI_FAILURE(status)) {
486 err = -EIO;
487 goto err_free_keymap;
62ec30d4
MG		 488 }
489
4d291ed7
DT		 490 err = input_register_device(hp_wmi_input_dev);
491 if (err)
492 goto err_uninstall_notifier;
493
62ec30d4 494 return 0;
4d291ed7
DT		 495
496 err_uninstall_notifier:
497 wmi_remove_notify_handler(HPWMI_EVENT_GUID);
498 err_free_keymap:
499 sparse_keymap_free(hp_wmi_input_dev);
500 err_free_dev:
501 input_free_device(hp_wmi_input_dev);
502 return err;
503}
504
505static void hp_wmi_input_destroy(void)
506{
507 wmi_remove_notify_handler(HPWMI_EVENT_GUID);
508 sparse_keymap_free(hp_wmi_input_dev);
509 input_unregister_device(hp_wmi_input_dev);
62ec30d4
MG		 510}
511
512static void cleanup_sysfs(struct platform_device *device)
513{
514 device_remove_file(&device->dev, &dev_attr_display);
515 device_remove_file(&device->dev, &dev_attr_hddtemp);
516 device_remove_file(&device->dev, &dev_attr_als);
517 device_remove_file(&device->dev, &dev_attr_dock);
871043bc 518 device_remove_file(&device->dev, &dev_attr_tablet);
62ec30d4
MG		 519}
520
ea79632d 521static int __devinit hp_wmi_bios_setup(struct platform_device *device)
62ec30d4
MG		 522{
523 int err;
a8ec105c 524 int wireless = 0;
6d96e00c 525
a8ec105c 526 err = hp_wmi_perform_query(HPWMI_WIRELESS_QUERY, 0, &wireless,
6d96e00c
TR		 527 sizeof(wireless));
528 if (err)
529 return err;
62ec30d4
MG		 530
531 err = device_create_file(&device->dev, &dev_attr_display);
532 if (err)
533 goto add_sysfs_error;
534 err = device_create_file(&device->dev, &dev_attr_hddtemp);
535 if (err)
536 goto add_sysfs_error;
537 err = device_create_file(&device->dev, &dev_attr_als);
538 if (err)
539 goto add_sysfs_error;
540 err = device_create_file(&device->dev, &dev_attr_dock);
871043bc
MG		 541 if (err)
542 goto add_sysfs_error;
543 err = device_create_file(&device->dev, &dev_attr_tablet);
62ec30d4
MG		 544 if (err)
545 goto add_sysfs_error;
546
3f6e2f13 547 if (wireless & 0x1) {
19d337df
JB		 548 wifi_rfkill = rfkill_alloc("hp-wifi", &device->dev,
549 RFKILL_TYPE_WLAN,
550 &hp_wmi_rfkill_ops,
e5fbba85
AJ		 551 (void *) HPWMI_WIFI);
552 rfkill_init_sw_state(wifi_rfkill,
553 hp_wmi_get_sw_state(HPWMI_WIFI));
554 rfkill_set_hw_state(wifi_rfkill,
555 hp_wmi_get_hw_state(HPWMI_WIFI));
fe8e4e03
LF		 556 err = rfkill_register(wifi_rfkill);
557 if (err)
19d337df 558 goto register_wifi_error;
3f6e2f13
MG		 559 }
560
561 if (wireless & 0x2) {
19d337df
JB		 562 bluetooth_rfkill = rfkill_alloc("hp-bluetooth", &device->dev,
563 RFKILL_TYPE_BLUETOOTH,
564 &hp_wmi_rfkill_ops,
e5fbba85
AJ		 565 (void *) HPWMI_BLUETOOTH);
566 rfkill_init_sw_state(bluetooth_rfkill,
567 hp_wmi_get_sw_state(HPWMI_BLUETOOTH));
568 rfkill_set_hw_state(bluetooth_rfkill,
569 hp_wmi_get_hw_state(HPWMI_BLUETOOTH));
fe8e4e03 570 err = rfkill_register(bluetooth_rfkill);
6989d565 571 if (err)
fe8e4e03 572 goto register_bluetooth_error;
3f6e2f13
MG		 573 }
574
575 if (wireless & 0x4) {
19d337df
JB		 576 wwan_rfkill = rfkill_alloc("hp-wwan", &device->dev,
577 RFKILL_TYPE_WWAN,
578 &hp_wmi_rfkill_ops,
e5fbba85
AJ		 579 (void *) HPWMI_WWAN);
580 rfkill_init_sw_state(wwan_rfkill,
581 hp_wmi_get_sw_state(HPWMI_WWAN));
582 rfkill_set_hw_state(wwan_rfkill,
583 hp_wmi_get_hw_state(HPWMI_WWAN));
fe8e4e03
LF		 584 err = rfkill_register(wwan_rfkill);
585 if (err)
586 goto register_wwan_err;
3f6e2f13 587 }
62ec30d4
MG		 588
589 return 0;
fe8e4e03 590register_wwan_err:
19d337df 591 rfkill_destroy(wwan_rfkill);
44f0606d
AM		 592 if (bluetooth_rfkill)
593 rfkill_unregister(bluetooth_rfkill);
fe8e4e03 594register_bluetooth_error:
19d337df 595 rfkill_destroy(bluetooth_rfkill);
44f0606d
AM		 596 if (wifi_rfkill)
597 rfkill_unregister(wifi_rfkill);
19d337df
JB		 598register_wifi_error:
599 rfkill_destroy(wifi_rfkill);
62ec30d4
MG		 600add_sysfs_error:
601 cleanup_sysfs(device);
602 return err;
603}
604
605static int __exit hp_wmi_bios_remove(struct platform_device *device)
606{
607 cleanup_sysfs(device);
608
19d337df 609 if (wifi_rfkill) {
3f6e2f13 610 rfkill_unregister(wifi_rfkill);
19d337df
JB		 611 rfkill_destroy(wifi_rfkill);
612 }
613 if (bluetooth_rfkill) {
3f6e2f13 614 rfkill_unregister(bluetooth_rfkill);
09729f0b 615 rfkill_destroy(bluetooth_rfkill);
19d337df
JB		 616 }
617 if (wwan_rfkill) {
3f6e2f13 618 rfkill_unregister(wwan_rfkill);
19d337df
JB		 619 rfkill_destroy(wwan_rfkill);
620 }
62ec30d4
MG		 621
622 return 0;
623}
624
8dd2b426 625static int hp_wmi_resume_handler(struct device *device)
4c395bdd 626{
4c395bdd 627 /*
871043bc
MG		 628 * Hardware state may have changed while suspended, so trigger
629 * input events for the current state. As this is a switch,
4c395bdd
FP		 630 * the input layer will only actually pass it on if the state
631 * changed.
632 */
daed9537
FP		 633 if (hp_wmi_input_dev) {
634 input_report_switch(hp_wmi_input_dev, SW_DOCK,
635 hp_wmi_dock_state());
636 input_report_switch(hp_wmi_input_dev, SW_TABLET_MODE,
637 hp_wmi_tablet_state());
638 input_sync(hp_wmi_input_dev);
639 }
4c395bdd 640
e5fbba85
AJ		 641 if (wifi_rfkill)
642 rfkill_set_states(wifi_rfkill,
643 hp_wmi_get_sw_state(HPWMI_WIFI),
644 hp_wmi_get_hw_state(HPWMI_WIFI));
645 if (bluetooth_rfkill)
646 rfkill_set_states(bluetooth_rfkill,
647 hp_wmi_get_sw_state(HPWMI_BLUETOOTH),
648 hp_wmi_get_hw_state(HPWMI_BLUETOOTH));
649 if (wwan_rfkill)
650 rfkill_set_states(wwan_rfkill,
651 hp_wmi_get_sw_state(HPWMI_WWAN),
652 hp_wmi_get_hw_state(HPWMI_WWAN));
653
4c395bdd
FP		 654 return 0;
655}
656
62ec30d4
MG		 657static int __init hp_wmi_init(void)
658{
659 int err;
b096667b
TR		 660 int event_capable = wmi_has_guid(HPWMI_EVENT_GUID);
661 int bios_capable = wmi_has_guid(HPWMI_BIOS_GUID);
62ec30d4 662
b096667b 663 if (event_capable) {
dfec5c48 664 err = hp_wmi_input_setup();
4d291ed7 665 if (err)
dfec5c48 666 return err;
62ec30d4
MG		 667 }
668
b096667b 669 if (bios_capable) {
62ec30d4
MG		 670 err = platform_driver_register(&hp_wmi_driver);
671 if (err)
dfec5c48 672 goto err_driver_reg;
62ec30d4
MG		 673 hp_wmi_platform_dev = platform_device_alloc("hp-wmi", -1);
674 if (!hp_wmi_platform_dev) {
dfec5c48
AL		 675 err = -ENOMEM;
676 goto err_device_alloc;
62ec30d4 677 }
dfec5c48
AL		 678 err = platform_device_add(hp_wmi_platform_dev);
679 if (err)
680 goto err_device_add;
62ec30d4
MG		 681 }
682
b096667b
TR		 683 if (!bios_capable && !event_capable)
684 return -ENODEV;
685
62ec30d4 686 return 0;
dfec5c48
AL		 687
688err_device_add:
689 platform_device_put(hp_wmi_platform_dev);
690err_device_alloc:
691 platform_driver_unregister(&hp_wmi_driver);
692err_driver_reg:
4d291ed7
DT		 693 if (event_capable)
694 hp_wmi_input_destroy();
dfec5c48
AL		 695
696 return err;
62ec30d4
MG		 697}
698
699static void __exit hp_wmi_exit(void)
700{
4d291ed7
DT		 701 if (wmi_has_guid(HPWMI_EVENT_GUID))
702 hp_wmi_input_destroy();
703
62ec30d4 704 if (hp_wmi_platform_dev) {
97ba0af0 705 platform_device_unregister(hp_wmi_platform_dev);
62ec30d4
MG		 706 platform_driver_unregister(&hp_wmi_driver);
707 }
708}
709
710module_init(hp_wmi_init);
711module_exit(hp_wmi_exit);
Linux kernel - Deliverables
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