Commit | Line | Data |
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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> | |
29 | #include <linux/types.h> | |
30 | #include <linux/input.h> | |
31 | #include <acpi/acpi_drivers.h> | |
32 | #include <linux/platform_device.h> | |
33 | #include <linux/acpi.h> | |
34 | #include <linux/rfkill.h> | |
35 | #include <linux/string.h> | |
36 | ||
37 | MODULE_AUTHOR("Matthew Garrett <mjg59@srcf.ucam.org>"); | |
38 | MODULE_DESCRIPTION("HP laptop WMI hotkeys driver"); | |
39 | MODULE_LICENSE("GPL"); | |
40 | ||
41 | MODULE_ALIAS("wmi:95F24279-4D7B-4334-9387-ACCDC67EF61C"); | |
42 | MODULE_ALIAS("wmi:5FB7F034-2C63-45e9-BE91-3D44E2C707E4"); | |
43 | ||
44 | #define HPWMI_EVENT_GUID "95F24279-4D7B-4334-9387-ACCDC67EF61C" | |
45 | #define HPWMI_BIOS_GUID "5FB7F034-2C63-45e9-BE91-3D44E2C707E4" | |
46 | ||
47 | #define HPWMI_DISPLAY_QUERY 0x1 | |
48 | #define HPWMI_HDDTEMP_QUERY 0x2 | |
49 | #define HPWMI_ALS_QUERY 0x3 | |
871043bc | 50 | #define HPWMI_HARDWARE_QUERY 0x4 |
62ec30d4 | 51 | #define HPWMI_WIRELESS_QUERY 0x5 |
a8823aef | 52 | #define HPWMI_HOTKEY_QUERY 0xc |
62ec30d4 MG |
53 | |
54 | static int __init hp_wmi_bios_setup(struct platform_device *device); | |
55 | static int __exit hp_wmi_bios_remove(struct platform_device *device); | |
8dd2b426 | 56 | static int hp_wmi_resume_handler(struct device *device); |
62ec30d4 MG |
57 | |
58 | struct bios_args { | |
59 | u32 signature; | |
60 | u32 command; | |
61 | u32 commandtype; | |
62 | u32 datasize; | |
63 | u32 data; | |
64 | }; | |
65 | ||
66 | struct bios_return { | |
67 | u32 sigpass; | |
68 | u32 return_code; | |
69 | u32 value; | |
70 | }; | |
71 | ||
72 | struct key_entry { | |
73 | char type; /* See KE_* below */ | |
a8823aef | 74 | u16 code; |
62ec30d4 MG |
75 | u16 keycode; |
76 | }; | |
77 | ||
871043bc | 78 | enum { KE_KEY, KE_END }; |
62ec30d4 MG |
79 | |
80 | static struct key_entry hp_wmi_keymap[] = { | |
62ec30d4 MG |
81 | {KE_KEY, 0x02, KEY_BRIGHTNESSUP}, |
82 | {KE_KEY, 0x03, KEY_BRIGHTNESSDOWN}, | |
a8823aef MG |
83 | {KE_KEY, 0x20e6, KEY_PROG1}, |
84 | {KE_KEY, 0x2142, KEY_MEDIA}, | |
5c624841 | 85 | {KE_KEY, 0x213b, KEY_INFO}, |
a8823aef | 86 | {KE_KEY, 0x231b, KEY_HELP}, |
62ec30d4 MG |
87 | {KE_END, 0} |
88 | }; | |
89 | ||
90 | static struct input_dev *hp_wmi_input_dev; | |
91 | static struct platform_device *hp_wmi_platform_dev; | |
92 | ||
93 | static struct rfkill *wifi_rfkill; | |
94 | static struct rfkill *bluetooth_rfkill; | |
95 | static struct rfkill *wwan_rfkill; | |
96 | ||
47145210 | 97 | static const struct dev_pm_ops hp_wmi_pm_ops = { |
8dd2b426 FP |
98 | .resume = hp_wmi_resume_handler, |
99 | .restore = hp_wmi_resume_handler, | |
100 | }; | |
101 | ||
62ec30d4 MG |
102 | static struct platform_driver hp_wmi_driver = { |
103 | .driver = { | |
8dd2b426 FP |
104 | .name = "hp-wmi", |
105 | .owner = THIS_MODULE, | |
106 | .pm = &hp_wmi_pm_ops, | |
62ec30d4 MG |
107 | }, |
108 | .probe = hp_wmi_bios_setup, | |
109 | .remove = hp_wmi_bios_remove, | |
110 | }; | |
111 | ||
112 | static int hp_wmi_perform_query(int query, int write, int value) | |
113 | { | |
114 | struct bios_return bios_return; | |
115 | acpi_status status; | |
116 | union acpi_object *obj; | |
117 | struct bios_args args = { | |
118 | .signature = 0x55434553, | |
119 | .command = write ? 0x2 : 0x1, | |
120 | .commandtype = query, | |
121 | .datasize = write ? 0x4 : 0, | |
122 | .data = value, | |
123 | }; | |
124 | struct acpi_buffer input = { sizeof(struct bios_args), &args }; | |
125 | struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL }; | |
126 | ||
127 | status = wmi_evaluate_method(HPWMI_BIOS_GUID, 0, 0x3, &input, &output); | |
128 | ||
129 | obj = output.pointer; | |
130 | ||
131 | if (!obj || obj->type != ACPI_TYPE_BUFFER) | |
132 | return -EINVAL; | |
133 | ||
134 | bios_return = *((struct bios_return *)obj->buffer.pointer); | |
135 | if (bios_return.return_code > 0) | |
136 | return bios_return.return_code * -1; | |
137 | else | |
138 | return bios_return.value; | |
139 | } | |
140 | ||
141 | static int hp_wmi_display_state(void) | |
142 | { | |
143 | return hp_wmi_perform_query(HPWMI_DISPLAY_QUERY, 0, 0); | |
144 | } | |
145 | ||
146 | static int hp_wmi_hddtemp_state(void) | |
147 | { | |
148 | return hp_wmi_perform_query(HPWMI_HDDTEMP_QUERY, 0, 0); | |
149 | } | |
150 | ||
151 | static int hp_wmi_als_state(void) | |
152 | { | |
153 | return hp_wmi_perform_query(HPWMI_ALS_QUERY, 0, 0); | |
154 | } | |
155 | ||
156 | static int hp_wmi_dock_state(void) | |
157 | { | |
871043bc | 158 | int ret = hp_wmi_perform_query(HPWMI_HARDWARE_QUERY, 0, 0); |
62ec30d4 | 159 | |
871043bc MG |
160 | if (ret < 0) |
161 | return ret; | |
162 | ||
163 | return ret & 0x1; | |
62ec30d4 MG |
164 | } |
165 | ||
871043bc | 166 | static int hp_wmi_tablet_state(void) |
62ec30d4 | 167 | { |
871043bc MG |
168 | int ret = hp_wmi_perform_query(HPWMI_HARDWARE_QUERY, 0, 0); |
169 | ||
170 | if (ret < 0) | |
171 | return ret; | |
172 | ||
173 | return (ret & 0x4) ? 1 : 0; | |
62ec30d4 MG |
174 | } |
175 | ||
19d337df | 176 | static int hp_wmi_set_block(void *data, bool blocked) |
62ec30d4 | 177 | { |
19d337df | 178 | unsigned long b = (unsigned long) data; |
76d8b64e | 179 | int query = BIT(b + 8) | ((!blocked) << b); |
62ec30d4 | 180 | |
19d337df | 181 | return hp_wmi_perform_query(HPWMI_WIRELESS_QUERY, 1, query); |
62ec30d4 MG |
182 | } |
183 | ||
19d337df JB |
184 | static const struct rfkill_ops hp_wmi_rfkill_ops = { |
185 | .set_block = hp_wmi_set_block, | |
186 | }; | |
62ec30d4 | 187 | |
19d337df | 188 | static bool hp_wmi_wifi_state(void) |
62ec30d4 MG |
189 | { |
190 | int wireless = hp_wmi_perform_query(HPWMI_WIRELESS_QUERY, 0, 0); | |
191 | ||
192 | if (wireless & 0x100) | |
19d337df | 193 | return false; |
62ec30d4 | 194 | else |
19d337df | 195 | return true; |
62ec30d4 MG |
196 | } |
197 | ||
19d337df | 198 | static bool hp_wmi_bluetooth_state(void) |
62ec30d4 MG |
199 | { |
200 | int wireless = hp_wmi_perform_query(HPWMI_WIRELESS_QUERY, 0, 0); | |
201 | ||
202 | if (wireless & 0x10000) | |
19d337df | 203 | return false; |
62ec30d4 | 204 | else |
19d337df | 205 | return true; |
62ec30d4 MG |
206 | } |
207 | ||
19d337df | 208 | static bool hp_wmi_wwan_state(void) |
62ec30d4 MG |
209 | { |
210 | int wireless = hp_wmi_perform_query(HPWMI_WIRELESS_QUERY, 0, 0); | |
211 | ||
212 | if (wireless & 0x1000000) | |
19d337df | 213 | return false; |
62ec30d4 | 214 | else |
19d337df | 215 | return true; |
62ec30d4 MG |
216 | } |
217 | ||
218 | static ssize_t show_display(struct device *dev, struct device_attribute *attr, | |
219 | char *buf) | |
220 | { | |
221 | int value = hp_wmi_display_state(); | |
222 | if (value < 0) | |
223 | return -EINVAL; | |
224 | return sprintf(buf, "%d\n", value); | |
225 | } | |
226 | ||
227 | static ssize_t show_hddtemp(struct device *dev, struct device_attribute *attr, | |
228 | char *buf) | |
229 | { | |
230 | int value = hp_wmi_hddtemp_state(); | |
231 | if (value < 0) | |
232 | return -EINVAL; | |
233 | return sprintf(buf, "%d\n", value); | |
234 | } | |
235 | ||
236 | static ssize_t show_als(struct device *dev, struct device_attribute *attr, | |
237 | char *buf) | |
238 | { | |
239 | int value = hp_wmi_als_state(); | |
240 | if (value < 0) | |
241 | return -EINVAL; | |
242 | return sprintf(buf, "%d\n", value); | |
243 | } | |
244 | ||
245 | static ssize_t show_dock(struct device *dev, struct device_attribute *attr, | |
246 | char *buf) | |
247 | { | |
248 | int value = hp_wmi_dock_state(); | |
249 | if (value < 0) | |
250 | return -EINVAL; | |
251 | return sprintf(buf, "%d\n", value); | |
252 | } | |
253 | ||
871043bc MG |
254 | static ssize_t show_tablet(struct device *dev, struct device_attribute *attr, |
255 | char *buf) | |
256 | { | |
257 | int value = hp_wmi_tablet_state(); | |
258 | if (value < 0) | |
259 | return -EINVAL; | |
260 | return sprintf(buf, "%d\n", value); | |
261 | } | |
262 | ||
62ec30d4 MG |
263 | static ssize_t set_als(struct device *dev, struct device_attribute *attr, |
264 | const char *buf, size_t count) | |
265 | { | |
266 | u32 tmp = simple_strtoul(buf, NULL, 10); | |
267 | hp_wmi_perform_query(HPWMI_ALS_QUERY, 1, tmp); | |
268 | return count; | |
269 | } | |
270 | ||
271 | static DEVICE_ATTR(display, S_IRUGO, show_display, NULL); | |
272 | static DEVICE_ATTR(hddtemp, S_IRUGO, show_hddtemp, NULL); | |
273 | static DEVICE_ATTR(als, S_IRUGO | S_IWUSR, show_als, set_als); | |
274 | static DEVICE_ATTR(dock, S_IRUGO, show_dock, NULL); | |
871043bc | 275 | static DEVICE_ATTR(tablet, S_IRUGO, show_tablet, NULL); |
62ec30d4 MG |
276 | |
277 | static struct key_entry *hp_wmi_get_entry_by_scancode(int code) | |
278 | { | |
279 | struct key_entry *key; | |
280 | ||
281 | for (key = hp_wmi_keymap; key->type != KE_END; key++) | |
282 | if (code == key->code) | |
283 | return key; | |
284 | ||
285 | return NULL; | |
286 | } | |
287 | ||
288 | static struct key_entry *hp_wmi_get_entry_by_keycode(int keycode) | |
289 | { | |
290 | struct key_entry *key; | |
291 | ||
292 | for (key = hp_wmi_keymap; key->type != KE_END; key++) | |
293 | if (key->type == KE_KEY && keycode == key->keycode) | |
294 | return key; | |
295 | ||
296 | return NULL; | |
297 | } | |
298 | ||
299 | static int hp_wmi_getkeycode(struct input_dev *dev, int scancode, int *keycode) | |
300 | { | |
301 | struct key_entry *key = hp_wmi_get_entry_by_scancode(scancode); | |
302 | ||
303 | if (key && key->type == KE_KEY) { | |
304 | *keycode = key->keycode; | |
305 | return 0; | |
306 | } | |
307 | ||
308 | return -EINVAL; | |
309 | } | |
310 | ||
311 | static int hp_wmi_setkeycode(struct input_dev *dev, int scancode, int keycode) | |
312 | { | |
313 | struct key_entry *key; | |
314 | int old_keycode; | |
315 | ||
316 | if (keycode < 0 || keycode > KEY_MAX) | |
317 | return -EINVAL; | |
318 | ||
319 | key = hp_wmi_get_entry_by_scancode(scancode); | |
320 | if (key && key->type == KE_KEY) { | |
321 | old_keycode = key->keycode; | |
322 | key->keycode = keycode; | |
323 | set_bit(keycode, dev->keybit); | |
324 | if (!hp_wmi_get_entry_by_keycode(old_keycode)) | |
325 | clear_bit(old_keycode, dev->keybit); | |
326 | return 0; | |
327 | } | |
328 | ||
329 | return -EINVAL; | |
330 | } | |
331 | ||
88429a10 | 332 | static void hp_wmi_notify(u32 value, void *context) |
62ec30d4 MG |
333 | { |
334 | struct acpi_buffer response = { ACPI_ALLOCATE_BUFFER, NULL }; | |
335 | static struct key_entry *key; | |
336 | union acpi_object *obj; | |
337 | ||
338 | wmi_get_event_data(value, &response); | |
339 | ||
340 | obj = (union acpi_object *)response.pointer; | |
341 | ||
342 | if (obj && obj->type == ACPI_TYPE_BUFFER && obj->buffer.length == 8) { | |
343 | int eventcode = *((u8 *) obj->buffer.pointer); | |
a8823aef MG |
344 | if (eventcode == 0x4) |
345 | eventcode = hp_wmi_perform_query(HPWMI_HOTKEY_QUERY, 0, | |
346 | 0); | |
62ec30d4 MG |
347 | key = hp_wmi_get_entry_by_scancode(eventcode); |
348 | if (key) { | |
349 | switch (key->type) { | |
350 | case KE_KEY: | |
351 | input_report_key(hp_wmi_input_dev, | |
352 | key->keycode, 1); | |
353 | input_sync(hp_wmi_input_dev); | |
354 | input_report_key(hp_wmi_input_dev, | |
355 | key->keycode, 0); | |
356 | input_sync(hp_wmi_input_dev); | |
357 | break; | |
62ec30d4 | 358 | } |
871043bc MG |
359 | } else if (eventcode == 0x1) { |
360 | input_report_switch(hp_wmi_input_dev, SW_DOCK, | |
361 | hp_wmi_dock_state()); | |
362 | input_report_switch(hp_wmi_input_dev, SW_TABLET_MODE, | |
363 | hp_wmi_tablet_state()); | |
364 | input_sync(hp_wmi_input_dev); | |
62ec30d4 MG |
365 | } else if (eventcode == 0x5) { |
366 | if (wifi_rfkill) | |
19d337df JB |
367 | rfkill_set_sw_state(wifi_rfkill, |
368 | hp_wmi_wifi_state()); | |
62ec30d4 | 369 | if (bluetooth_rfkill) |
19d337df JB |
370 | rfkill_set_sw_state(bluetooth_rfkill, |
371 | hp_wmi_bluetooth_state()); | |
62ec30d4 | 372 | if (wwan_rfkill) |
19d337df JB |
373 | rfkill_set_sw_state(wwan_rfkill, |
374 | hp_wmi_wwan_state()); | |
62ec30d4 MG |
375 | } else |
376 | printk(KERN_INFO "HP WMI: Unknown key pressed - %x\n", | |
377 | eventcode); | |
378 | } else | |
379 | printk(KERN_INFO "HP WMI: Unknown response received\n"); | |
380 | } | |
381 | ||
382 | static int __init hp_wmi_input_setup(void) | |
383 | { | |
384 | struct key_entry *key; | |
385 | int err; | |
386 | ||
387 | hp_wmi_input_dev = input_allocate_device(); | |
388 | ||
389 | hp_wmi_input_dev->name = "HP WMI hotkeys"; | |
390 | hp_wmi_input_dev->phys = "wmi/input0"; | |
391 | hp_wmi_input_dev->id.bustype = BUS_HOST; | |
392 | hp_wmi_input_dev->getkeycode = hp_wmi_getkeycode; | |
393 | hp_wmi_input_dev->setkeycode = hp_wmi_setkeycode; | |
394 | ||
395 | for (key = hp_wmi_keymap; key->type != KE_END; key++) { | |
396 | switch (key->type) { | |
397 | case KE_KEY: | |
398 | set_bit(EV_KEY, hp_wmi_input_dev->evbit); | |
399 | set_bit(key->keycode, hp_wmi_input_dev->keybit); | |
400 | break; | |
62ec30d4 MG |
401 | } |
402 | } | |
403 | ||
871043bc MG |
404 | set_bit(EV_SW, hp_wmi_input_dev->evbit); |
405 | set_bit(SW_DOCK, hp_wmi_input_dev->swbit); | |
406 | set_bit(SW_TABLET_MODE, hp_wmi_input_dev->swbit); | |
407 | ||
408 | /* Set initial hardware state */ | |
409 | input_report_switch(hp_wmi_input_dev, SW_DOCK, 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); | |
413 | ||
62ec30d4 MG |
414 | err = input_register_device(hp_wmi_input_dev); |
415 | ||
416 | if (err) { | |
417 | input_free_device(hp_wmi_input_dev); | |
418 | return err; | |
419 | } | |
420 | ||
421 | return 0; | |
422 | } | |
423 | ||
424 | static void cleanup_sysfs(struct platform_device *device) | |
425 | { | |
426 | device_remove_file(&device->dev, &dev_attr_display); | |
427 | device_remove_file(&device->dev, &dev_attr_hddtemp); | |
428 | device_remove_file(&device->dev, &dev_attr_als); | |
429 | device_remove_file(&device->dev, &dev_attr_dock); | |
871043bc | 430 | device_remove_file(&device->dev, &dev_attr_tablet); |
62ec30d4 MG |
431 | } |
432 | ||
433 | static int __init hp_wmi_bios_setup(struct platform_device *device) | |
434 | { | |
435 | int err; | |
3f6e2f13 | 436 | int wireless = hp_wmi_perform_query(HPWMI_WIRELESS_QUERY, 0, 0); |
62ec30d4 MG |
437 | |
438 | err = device_create_file(&device->dev, &dev_attr_display); | |
439 | if (err) | |
440 | goto add_sysfs_error; | |
441 | err = device_create_file(&device->dev, &dev_attr_hddtemp); | |
442 | if (err) | |
443 | goto add_sysfs_error; | |
444 | err = device_create_file(&device->dev, &dev_attr_als); | |
445 | if (err) | |
446 | goto add_sysfs_error; | |
447 | err = device_create_file(&device->dev, &dev_attr_dock); | |
871043bc MG |
448 | if (err) |
449 | goto add_sysfs_error; | |
450 | err = device_create_file(&device->dev, &dev_attr_tablet); | |
62ec30d4 MG |
451 | if (err) |
452 | goto add_sysfs_error; | |
453 | ||
3f6e2f13 | 454 | if (wireless & 0x1) { |
19d337df JB |
455 | wifi_rfkill = rfkill_alloc("hp-wifi", &device->dev, |
456 | RFKILL_TYPE_WLAN, | |
457 | &hp_wmi_rfkill_ops, | |
458 | (void *) 0); | |
fe8e4e03 LF |
459 | err = rfkill_register(wifi_rfkill); |
460 | if (err) | |
19d337df | 461 | goto register_wifi_error; |
3f6e2f13 MG |
462 | } |
463 | ||
464 | if (wireless & 0x2) { | |
19d337df JB |
465 | bluetooth_rfkill = rfkill_alloc("hp-bluetooth", &device->dev, |
466 | RFKILL_TYPE_BLUETOOTH, | |
467 | &hp_wmi_rfkill_ops, | |
468 | (void *) 1); | |
fe8e4e03 | 469 | err = rfkill_register(bluetooth_rfkill); |
6989d565 | 470 | if (err) |
fe8e4e03 | 471 | goto register_bluetooth_error; |
3f6e2f13 MG |
472 | } |
473 | ||
474 | if (wireless & 0x4) { | |
19d337df JB |
475 | wwan_rfkill = rfkill_alloc("hp-wwan", &device->dev, |
476 | RFKILL_TYPE_WWAN, | |
477 | &hp_wmi_rfkill_ops, | |
478 | (void *) 2); | |
fe8e4e03 LF |
479 | err = rfkill_register(wwan_rfkill); |
480 | if (err) | |
481 | goto register_wwan_err; | |
3f6e2f13 | 482 | } |
62ec30d4 MG |
483 | |
484 | return 0; | |
fe8e4e03 | 485 | register_wwan_err: |
19d337df | 486 | rfkill_destroy(wwan_rfkill); |
44f0606d AM |
487 | if (bluetooth_rfkill) |
488 | rfkill_unregister(bluetooth_rfkill); | |
fe8e4e03 | 489 | register_bluetooth_error: |
19d337df | 490 | rfkill_destroy(bluetooth_rfkill); |
44f0606d AM |
491 | if (wifi_rfkill) |
492 | rfkill_unregister(wifi_rfkill); | |
19d337df JB |
493 | register_wifi_error: |
494 | rfkill_destroy(wifi_rfkill); | |
62ec30d4 MG |
495 | add_sysfs_error: |
496 | cleanup_sysfs(device); | |
497 | return err; | |
498 | } | |
499 | ||
500 | static int __exit hp_wmi_bios_remove(struct platform_device *device) | |
501 | { | |
502 | cleanup_sysfs(device); | |
503 | ||
19d337df | 504 | if (wifi_rfkill) { |
3f6e2f13 | 505 | rfkill_unregister(wifi_rfkill); |
19d337df JB |
506 | rfkill_destroy(wifi_rfkill); |
507 | } | |
508 | if (bluetooth_rfkill) { | |
3f6e2f13 | 509 | rfkill_unregister(bluetooth_rfkill); |
09729f0b | 510 | rfkill_destroy(bluetooth_rfkill); |
19d337df JB |
511 | } |
512 | if (wwan_rfkill) { | |
3f6e2f13 | 513 | rfkill_unregister(wwan_rfkill); |
19d337df JB |
514 | rfkill_destroy(wwan_rfkill); |
515 | } | |
62ec30d4 MG |
516 | |
517 | return 0; | |
518 | } | |
519 | ||
8dd2b426 | 520 | static int hp_wmi_resume_handler(struct device *device) |
4c395bdd | 521 | { |
4c395bdd | 522 | /* |
871043bc MG |
523 | * Hardware state may have changed while suspended, so trigger |
524 | * input events for the current state. As this is a switch, | |
4c395bdd FP |
525 | * the input layer will only actually pass it on if the state |
526 | * changed. | |
527 | */ | |
daed9537 FP |
528 | if (hp_wmi_input_dev) { |
529 | input_report_switch(hp_wmi_input_dev, SW_DOCK, | |
530 | hp_wmi_dock_state()); | |
531 | input_report_switch(hp_wmi_input_dev, SW_TABLET_MODE, | |
532 | hp_wmi_tablet_state()); | |
533 | input_sync(hp_wmi_input_dev); | |
534 | } | |
4c395bdd FP |
535 | |
536 | return 0; | |
537 | } | |
538 | ||
62ec30d4 MG |
539 | static int __init hp_wmi_init(void) |
540 | { | |
541 | int err; | |
542 | ||
543 | if (wmi_has_guid(HPWMI_EVENT_GUID)) { | |
544 | err = wmi_install_notify_handler(HPWMI_EVENT_GUID, | |
545 | hp_wmi_notify, NULL); | |
546 | if (!err) | |
547 | hp_wmi_input_setup(); | |
548 | } | |
549 | ||
550 | if (wmi_has_guid(HPWMI_BIOS_GUID)) { | |
551 | err = platform_driver_register(&hp_wmi_driver); | |
552 | if (err) | |
553 | return 0; | |
554 | hp_wmi_platform_dev = platform_device_alloc("hp-wmi", -1); | |
555 | if (!hp_wmi_platform_dev) { | |
556 | platform_driver_unregister(&hp_wmi_driver); | |
557 | return 0; | |
558 | } | |
559 | platform_device_add(hp_wmi_platform_dev); | |
560 | } | |
561 | ||
562 | return 0; | |
563 | } | |
564 | ||
565 | static void __exit hp_wmi_exit(void) | |
566 | { | |
567 | if (wmi_has_guid(HPWMI_EVENT_GUID)) { | |
568 | wmi_remove_notify_handler(HPWMI_EVENT_GUID); | |
569 | input_unregister_device(hp_wmi_input_dev); | |
570 | } | |
571 | if (hp_wmi_platform_dev) { | |
572 | platform_device_del(hp_wmi_platform_dev); | |
573 | platform_driver_unregister(&hp_wmi_driver); | |
574 | } | |
575 | } | |
576 | ||
577 | module_init(hp_wmi_init); | |
578 | module_exit(hp_wmi_exit); |