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 | |
50 | #define HPWMI_DOCK_QUERY 0x4 | |
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); | |
4c395bdd | 56 | static int hp_wmi_resume_handler(struct platform_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 | ||
78 | enum { KE_KEY, KE_SW, KE_END }; | |
79 | ||
80 | static struct key_entry hp_wmi_keymap[] = { | |
81 | {KE_SW, 0x01, SW_DOCK}, | |
82 | {KE_KEY, 0x02, KEY_BRIGHTNESSUP}, | |
83 | {KE_KEY, 0x03, KEY_BRIGHTNESSDOWN}, | |
a8823aef MG |
84 | {KE_KEY, 0x20e6, KEY_PROG1}, |
85 | {KE_KEY, 0x2142, KEY_MEDIA}, | |
5c624841 | 86 | {KE_KEY, 0x213b, KEY_INFO}, |
a8823aef | 87 | {KE_KEY, 0x231b, KEY_HELP}, |
62ec30d4 MG |
88 | {KE_END, 0} |
89 | }; | |
90 | ||
91 | static struct input_dev *hp_wmi_input_dev; | |
92 | static struct platform_device *hp_wmi_platform_dev; | |
93 | ||
94 | static struct rfkill *wifi_rfkill; | |
95 | static struct rfkill *bluetooth_rfkill; | |
96 | static struct rfkill *wwan_rfkill; | |
97 | ||
98 | static struct platform_driver hp_wmi_driver = { | |
99 | .driver = { | |
100 | .name = "hp-wmi", | |
101 | .owner = THIS_MODULE, | |
102 | }, | |
103 | .probe = hp_wmi_bios_setup, | |
104 | .remove = hp_wmi_bios_remove, | |
4c395bdd | 105 | .resume = hp_wmi_resume_handler, |
62ec30d4 MG |
106 | }; |
107 | ||
108 | static int hp_wmi_perform_query(int query, int write, int value) | |
109 | { | |
110 | struct bios_return bios_return; | |
111 | acpi_status status; | |
112 | union acpi_object *obj; | |
113 | struct bios_args args = { | |
114 | .signature = 0x55434553, | |
115 | .command = write ? 0x2 : 0x1, | |
116 | .commandtype = query, | |
117 | .datasize = write ? 0x4 : 0, | |
118 | .data = value, | |
119 | }; | |
120 | struct acpi_buffer input = { sizeof(struct bios_args), &args }; | |
121 | struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL }; | |
122 | ||
123 | status = wmi_evaluate_method(HPWMI_BIOS_GUID, 0, 0x3, &input, &output); | |
124 | ||
125 | obj = output.pointer; | |
126 | ||
127 | if (!obj || obj->type != ACPI_TYPE_BUFFER) | |
128 | return -EINVAL; | |
129 | ||
130 | bios_return = *((struct bios_return *)obj->buffer.pointer); | |
131 | if (bios_return.return_code > 0) | |
132 | return bios_return.return_code * -1; | |
133 | else | |
134 | return bios_return.value; | |
135 | } | |
136 | ||
137 | static int hp_wmi_display_state(void) | |
138 | { | |
139 | return hp_wmi_perform_query(HPWMI_DISPLAY_QUERY, 0, 0); | |
140 | } | |
141 | ||
142 | static int hp_wmi_hddtemp_state(void) | |
143 | { | |
144 | return hp_wmi_perform_query(HPWMI_HDDTEMP_QUERY, 0, 0); | |
145 | } | |
146 | ||
147 | static int hp_wmi_als_state(void) | |
148 | { | |
149 | return hp_wmi_perform_query(HPWMI_ALS_QUERY, 0, 0); | |
150 | } | |
151 | ||
152 | static int hp_wmi_dock_state(void) | |
153 | { | |
154 | return hp_wmi_perform_query(HPWMI_DOCK_QUERY, 0, 0); | |
155 | } | |
156 | ||
19d337df | 157 | static int hp_wmi_set_block(void *data, bool blocked) |
62ec30d4 | 158 | { |
19d337df JB |
159 | unsigned long b = (unsigned long) data; |
160 | int query = BIT(b + 8) | ((!!blocked) << b); | |
62ec30d4 | 161 | |
19d337df | 162 | return hp_wmi_perform_query(HPWMI_WIRELESS_QUERY, 1, query); |
62ec30d4 MG |
163 | } |
164 | ||
19d337df JB |
165 | static const struct rfkill_ops hp_wmi_rfkill_ops = { |
166 | .set_block = hp_wmi_set_block, | |
167 | }; | |
62ec30d4 | 168 | |
19d337df | 169 | static bool hp_wmi_wifi_state(void) |
62ec30d4 MG |
170 | { |
171 | int wireless = hp_wmi_perform_query(HPWMI_WIRELESS_QUERY, 0, 0); | |
172 | ||
173 | if (wireless & 0x100) | |
19d337df | 174 | return false; |
62ec30d4 | 175 | else |
19d337df | 176 | return true; |
62ec30d4 MG |
177 | } |
178 | ||
19d337df | 179 | static bool hp_wmi_bluetooth_state(void) |
62ec30d4 MG |
180 | { |
181 | int wireless = hp_wmi_perform_query(HPWMI_WIRELESS_QUERY, 0, 0); | |
182 | ||
183 | if (wireless & 0x10000) | |
19d337df | 184 | return false; |
62ec30d4 | 185 | else |
19d337df | 186 | return true; |
62ec30d4 MG |
187 | } |
188 | ||
19d337df | 189 | static bool hp_wmi_wwan_state(void) |
62ec30d4 MG |
190 | { |
191 | int wireless = hp_wmi_perform_query(HPWMI_WIRELESS_QUERY, 0, 0); | |
192 | ||
193 | if (wireless & 0x1000000) | |
19d337df | 194 | return false; |
62ec30d4 | 195 | else |
19d337df | 196 | return true; |
62ec30d4 MG |
197 | } |
198 | ||
199 | static ssize_t show_display(struct device *dev, struct device_attribute *attr, | |
200 | char *buf) | |
201 | { | |
202 | int value = hp_wmi_display_state(); | |
203 | if (value < 0) | |
204 | return -EINVAL; | |
205 | return sprintf(buf, "%d\n", value); | |
206 | } | |
207 | ||
208 | static ssize_t show_hddtemp(struct device *dev, struct device_attribute *attr, | |
209 | char *buf) | |
210 | { | |
211 | int value = hp_wmi_hddtemp_state(); | |
212 | if (value < 0) | |
213 | return -EINVAL; | |
214 | return sprintf(buf, "%d\n", value); | |
215 | } | |
216 | ||
217 | static ssize_t show_als(struct device *dev, struct device_attribute *attr, | |
218 | char *buf) | |
219 | { | |
220 | int value = hp_wmi_als_state(); | |
221 | if (value < 0) | |
222 | return -EINVAL; | |
223 | return sprintf(buf, "%d\n", value); | |
224 | } | |
225 | ||
226 | static ssize_t show_dock(struct device *dev, struct device_attribute *attr, | |
227 | char *buf) | |
228 | { | |
229 | int value = hp_wmi_dock_state(); | |
230 | if (value < 0) | |
231 | return -EINVAL; | |
232 | return sprintf(buf, "%d\n", value); | |
233 | } | |
234 | ||
235 | static ssize_t set_als(struct device *dev, struct device_attribute *attr, | |
236 | const char *buf, size_t count) | |
237 | { | |
238 | u32 tmp = simple_strtoul(buf, NULL, 10); | |
239 | hp_wmi_perform_query(HPWMI_ALS_QUERY, 1, tmp); | |
240 | return count; | |
241 | } | |
242 | ||
243 | static DEVICE_ATTR(display, S_IRUGO, show_display, NULL); | |
244 | static DEVICE_ATTR(hddtemp, S_IRUGO, show_hddtemp, NULL); | |
245 | static DEVICE_ATTR(als, S_IRUGO | S_IWUSR, show_als, set_als); | |
246 | static DEVICE_ATTR(dock, S_IRUGO, show_dock, NULL); | |
247 | ||
248 | static struct key_entry *hp_wmi_get_entry_by_scancode(int code) | |
249 | { | |
250 | struct key_entry *key; | |
251 | ||
252 | for (key = hp_wmi_keymap; key->type != KE_END; key++) | |
253 | if (code == key->code) | |
254 | return key; | |
255 | ||
256 | return NULL; | |
257 | } | |
258 | ||
259 | static struct key_entry *hp_wmi_get_entry_by_keycode(int keycode) | |
260 | { | |
261 | struct key_entry *key; | |
262 | ||
263 | for (key = hp_wmi_keymap; key->type != KE_END; key++) | |
264 | if (key->type == KE_KEY && keycode == key->keycode) | |
265 | return key; | |
266 | ||
267 | return NULL; | |
268 | } | |
269 | ||
270 | static int hp_wmi_getkeycode(struct input_dev *dev, int scancode, int *keycode) | |
271 | { | |
272 | struct key_entry *key = hp_wmi_get_entry_by_scancode(scancode); | |
273 | ||
274 | if (key && key->type == KE_KEY) { | |
275 | *keycode = key->keycode; | |
276 | return 0; | |
277 | } | |
278 | ||
279 | return -EINVAL; | |
280 | } | |
281 | ||
282 | static int hp_wmi_setkeycode(struct input_dev *dev, int scancode, int keycode) | |
283 | { | |
284 | struct key_entry *key; | |
285 | int old_keycode; | |
286 | ||
287 | if (keycode < 0 || keycode > KEY_MAX) | |
288 | return -EINVAL; | |
289 | ||
290 | key = hp_wmi_get_entry_by_scancode(scancode); | |
291 | if (key && key->type == KE_KEY) { | |
292 | old_keycode = key->keycode; | |
293 | key->keycode = keycode; | |
294 | set_bit(keycode, dev->keybit); | |
295 | if (!hp_wmi_get_entry_by_keycode(old_keycode)) | |
296 | clear_bit(old_keycode, dev->keybit); | |
297 | return 0; | |
298 | } | |
299 | ||
300 | return -EINVAL; | |
301 | } | |
302 | ||
88429a10 | 303 | static void hp_wmi_notify(u32 value, void *context) |
62ec30d4 MG |
304 | { |
305 | struct acpi_buffer response = { ACPI_ALLOCATE_BUFFER, NULL }; | |
306 | static struct key_entry *key; | |
307 | union acpi_object *obj; | |
308 | ||
309 | wmi_get_event_data(value, &response); | |
310 | ||
311 | obj = (union acpi_object *)response.pointer; | |
312 | ||
313 | if (obj && obj->type == ACPI_TYPE_BUFFER && obj->buffer.length == 8) { | |
314 | int eventcode = *((u8 *) obj->buffer.pointer); | |
a8823aef MG |
315 | if (eventcode == 0x4) |
316 | eventcode = hp_wmi_perform_query(HPWMI_HOTKEY_QUERY, 0, | |
317 | 0); | |
62ec30d4 MG |
318 | key = hp_wmi_get_entry_by_scancode(eventcode); |
319 | if (key) { | |
320 | switch (key->type) { | |
321 | case KE_KEY: | |
322 | input_report_key(hp_wmi_input_dev, | |
323 | key->keycode, 1); | |
324 | input_sync(hp_wmi_input_dev); | |
325 | input_report_key(hp_wmi_input_dev, | |
326 | key->keycode, 0); | |
327 | input_sync(hp_wmi_input_dev); | |
328 | break; | |
329 | case KE_SW: | |
330 | input_report_switch(hp_wmi_input_dev, | |
331 | key->keycode, | |
332 | hp_wmi_dock_state()); | |
333 | input_sync(hp_wmi_input_dev); | |
334 | break; | |
335 | } | |
336 | } else if (eventcode == 0x5) { | |
337 | if (wifi_rfkill) | |
19d337df JB |
338 | rfkill_set_sw_state(wifi_rfkill, |
339 | hp_wmi_wifi_state()); | |
62ec30d4 | 340 | if (bluetooth_rfkill) |
19d337df JB |
341 | rfkill_set_sw_state(bluetooth_rfkill, |
342 | hp_wmi_bluetooth_state()); | |
62ec30d4 | 343 | if (wwan_rfkill) |
19d337df JB |
344 | rfkill_set_sw_state(wwan_rfkill, |
345 | hp_wmi_wwan_state()); | |
62ec30d4 MG |
346 | } else |
347 | printk(KERN_INFO "HP WMI: Unknown key pressed - %x\n", | |
348 | eventcode); | |
349 | } else | |
350 | printk(KERN_INFO "HP WMI: Unknown response received\n"); | |
351 | } | |
352 | ||
353 | static int __init hp_wmi_input_setup(void) | |
354 | { | |
355 | struct key_entry *key; | |
356 | int err; | |
357 | ||
358 | hp_wmi_input_dev = input_allocate_device(); | |
359 | ||
360 | hp_wmi_input_dev->name = "HP WMI hotkeys"; | |
361 | hp_wmi_input_dev->phys = "wmi/input0"; | |
362 | hp_wmi_input_dev->id.bustype = BUS_HOST; | |
363 | hp_wmi_input_dev->getkeycode = hp_wmi_getkeycode; | |
364 | hp_wmi_input_dev->setkeycode = hp_wmi_setkeycode; | |
365 | ||
366 | for (key = hp_wmi_keymap; key->type != KE_END; key++) { | |
367 | switch (key->type) { | |
368 | case KE_KEY: | |
369 | set_bit(EV_KEY, hp_wmi_input_dev->evbit); | |
370 | set_bit(key->keycode, hp_wmi_input_dev->keybit); | |
371 | break; | |
372 | case KE_SW: | |
373 | set_bit(EV_SW, hp_wmi_input_dev->evbit); | |
374 | set_bit(key->keycode, hp_wmi_input_dev->swbit); | |
3095eb87 FP |
375 | |
376 | /* Set initial dock state */ | |
377 | input_report_switch(hp_wmi_input_dev, key->keycode, | |
378 | hp_wmi_dock_state()); | |
379 | input_sync(hp_wmi_input_dev); | |
62ec30d4 MG |
380 | break; |
381 | } | |
382 | } | |
383 | ||
384 | err = input_register_device(hp_wmi_input_dev); | |
385 | ||
386 | if (err) { | |
387 | input_free_device(hp_wmi_input_dev); | |
388 | return err; | |
389 | } | |
390 | ||
391 | return 0; | |
392 | } | |
393 | ||
394 | static void cleanup_sysfs(struct platform_device *device) | |
395 | { | |
396 | device_remove_file(&device->dev, &dev_attr_display); | |
397 | device_remove_file(&device->dev, &dev_attr_hddtemp); | |
398 | device_remove_file(&device->dev, &dev_attr_als); | |
399 | device_remove_file(&device->dev, &dev_attr_dock); | |
400 | } | |
401 | ||
402 | static int __init hp_wmi_bios_setup(struct platform_device *device) | |
403 | { | |
404 | int err; | |
3f6e2f13 | 405 | int wireless = hp_wmi_perform_query(HPWMI_WIRELESS_QUERY, 0, 0); |
62ec30d4 MG |
406 | |
407 | err = device_create_file(&device->dev, &dev_attr_display); | |
408 | if (err) | |
409 | goto add_sysfs_error; | |
410 | err = device_create_file(&device->dev, &dev_attr_hddtemp); | |
411 | if (err) | |
412 | goto add_sysfs_error; | |
413 | err = device_create_file(&device->dev, &dev_attr_als); | |
414 | if (err) | |
415 | goto add_sysfs_error; | |
416 | err = device_create_file(&device->dev, &dev_attr_dock); | |
417 | if (err) | |
418 | goto add_sysfs_error; | |
419 | ||
3f6e2f13 | 420 | if (wireless & 0x1) { |
19d337df JB |
421 | wifi_rfkill = rfkill_alloc("hp-wifi", &device->dev, |
422 | RFKILL_TYPE_WLAN, | |
423 | &hp_wmi_rfkill_ops, | |
424 | (void *) 0); | |
fe8e4e03 LF |
425 | err = rfkill_register(wifi_rfkill); |
426 | if (err) | |
19d337df | 427 | goto register_wifi_error; |
3f6e2f13 MG |
428 | } |
429 | ||
430 | if (wireless & 0x2) { | |
19d337df JB |
431 | bluetooth_rfkill = rfkill_alloc("hp-bluetooth", &device->dev, |
432 | RFKILL_TYPE_BLUETOOTH, | |
433 | &hp_wmi_rfkill_ops, | |
434 | (void *) 1); | |
fe8e4e03 | 435 | err = rfkill_register(bluetooth_rfkill); |
6989d565 | 436 | if (err) |
fe8e4e03 | 437 | goto register_bluetooth_error; |
3f6e2f13 MG |
438 | } |
439 | ||
440 | if (wireless & 0x4) { | |
19d337df JB |
441 | wwan_rfkill = rfkill_alloc("hp-wwan", &device->dev, |
442 | RFKILL_TYPE_WWAN, | |
443 | &hp_wmi_rfkill_ops, | |
444 | (void *) 2); | |
fe8e4e03 LF |
445 | err = rfkill_register(wwan_rfkill); |
446 | if (err) | |
447 | goto register_wwan_err; | |
3f6e2f13 | 448 | } |
62ec30d4 MG |
449 | |
450 | return 0; | |
fe8e4e03 | 451 | register_wwan_err: |
19d337df | 452 | rfkill_destroy(wwan_rfkill); |
44f0606d AM |
453 | if (bluetooth_rfkill) |
454 | rfkill_unregister(bluetooth_rfkill); | |
fe8e4e03 | 455 | register_bluetooth_error: |
19d337df | 456 | rfkill_destroy(bluetooth_rfkill); |
44f0606d AM |
457 | if (wifi_rfkill) |
458 | rfkill_unregister(wifi_rfkill); | |
19d337df JB |
459 | register_wifi_error: |
460 | rfkill_destroy(wifi_rfkill); | |
62ec30d4 MG |
461 | add_sysfs_error: |
462 | cleanup_sysfs(device); | |
463 | return err; | |
464 | } | |
465 | ||
466 | static int __exit hp_wmi_bios_remove(struct platform_device *device) | |
467 | { | |
468 | cleanup_sysfs(device); | |
469 | ||
19d337df | 470 | if (wifi_rfkill) { |
3f6e2f13 | 471 | rfkill_unregister(wifi_rfkill); |
19d337df JB |
472 | rfkill_destroy(wifi_rfkill); |
473 | } | |
474 | if (bluetooth_rfkill) { | |
3f6e2f13 | 475 | rfkill_unregister(bluetooth_rfkill); |
19d337df JB |
476 | rfkill_destroy(wifi_rfkill); |
477 | } | |
478 | if (wwan_rfkill) { | |
3f6e2f13 | 479 | rfkill_unregister(wwan_rfkill); |
19d337df JB |
480 | rfkill_destroy(wwan_rfkill); |
481 | } | |
62ec30d4 MG |
482 | |
483 | return 0; | |
484 | } | |
485 | ||
4c395bdd FP |
486 | static int hp_wmi_resume_handler(struct platform_device *device) |
487 | { | |
488 | struct key_entry *key; | |
489 | ||
490 | /* | |
491 | * Docking state may have changed while suspended, so trigger | |
492 | * an input event for the current state. As this is a switch, | |
493 | * the input layer will only actually pass it on if the state | |
494 | * changed. | |
495 | */ | |
496 | for (key = hp_wmi_keymap; key->type != KE_END; key++) { | |
497 | switch (key->type) { | |
498 | case KE_SW: | |
499 | input_report_switch(hp_wmi_input_dev, key->keycode, | |
500 | hp_wmi_dock_state()); | |
501 | input_sync(hp_wmi_input_dev); | |
502 | break; | |
503 | } | |
504 | } | |
505 | ||
506 | return 0; | |
507 | } | |
508 | ||
62ec30d4 MG |
509 | static int __init hp_wmi_init(void) |
510 | { | |
511 | int err; | |
512 | ||
513 | if (wmi_has_guid(HPWMI_EVENT_GUID)) { | |
514 | err = wmi_install_notify_handler(HPWMI_EVENT_GUID, | |
515 | hp_wmi_notify, NULL); | |
516 | if (!err) | |
517 | hp_wmi_input_setup(); | |
518 | } | |
519 | ||
520 | if (wmi_has_guid(HPWMI_BIOS_GUID)) { | |
521 | err = platform_driver_register(&hp_wmi_driver); | |
522 | if (err) | |
523 | return 0; | |
524 | hp_wmi_platform_dev = platform_device_alloc("hp-wmi", -1); | |
525 | if (!hp_wmi_platform_dev) { | |
526 | platform_driver_unregister(&hp_wmi_driver); | |
527 | return 0; | |
528 | } | |
529 | platform_device_add(hp_wmi_platform_dev); | |
530 | } | |
531 | ||
532 | return 0; | |
533 | } | |
534 | ||
535 | static void __exit hp_wmi_exit(void) | |
536 | { | |
537 | if (wmi_has_guid(HPWMI_EVENT_GUID)) { | |
538 | wmi_remove_notify_handler(HPWMI_EVENT_GUID); | |
539 | input_unregister_device(hp_wmi_input_dev); | |
540 | } | |
541 | if (hp_wmi_platform_dev) { | |
542 | platform_device_del(hp_wmi_platform_dev); | |
543 | platform_driver_unregister(&hp_wmi_driver); | |
544 | } | |
545 | } | |
546 | ||
547 | module_init(hp_wmi_init); | |
548 | module_exit(hp_wmi_exit); |