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iio: trigger: Move declaration of struct iio_poll_func to avoid warnings
[linux-2.6/linux-acpi-2.6/ibm-acpi-2.6.git] / drivers / platform / x86 / hp-wmi.c
blobf94017bcdd6e9c8b10d80c70f7fd56ed27788d83
1 /*
2 * HP WMI hotkeys
3 *
4 * Copyright (C) 2008 Red Hat <mjg@redhat.com>
5 * Copyright (C) 2010, 2011 Anssi Hannula <anssi.hannula@iki.fi>
6 *
7 * Portions based on wistron_btns.c:
8 * Copyright (C) 2005 Miloslav Trmac <mitr@volny.cz>
9 * Copyright (C) 2005 Bernhard Rosenkraenzer <bero@arklinux.org>
10 * Copyright (C) 2005 Dmitry Torokhov <dtor@mail.ru>
11 *
12 * This program is free software; you can redistribute it and/or modify
13 * it under the terms of the GNU General Public License as published by
14 * the Free Software Foundation; either version 2 of the License, or
15 * (at your option) any later version.
16 *
17 * This program is distributed in the hope that it will be useful,
18 * but WITHOUT ANY WARRANTY; without even the implied warranty of
19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20 * GNU General Public License for more details.
21 *
22 * You should have received a copy of the GNU General Public License
23 * along with this program; if not, write to the Free Software
24 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
25 */
26
27 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
28
29 #include <linux/kernel.h>
30 #include <linux/module.h>
31 #include <linux/init.h>
32 #include <linux/slab.h>
33 #include <linux/types.h>
34 #include <linux/input.h>
35 #include <linux/input/sparse-keymap.h>
36 #include <linux/platform_device.h>
37 #include <linux/acpi.h>
38 #include <linux/rfkill.h>
39 #include <linux/string.h>
40
41 MODULE_AUTHOR("Matthew Garrett <mjg59@srcf.ucam.org>");
42 MODULE_DESCRIPTION("HP laptop WMI hotkeys driver");
43 MODULE_LICENSE("GPL");
44
45 MODULE_ALIAS("wmi:95F24279-4D7B-4334-9387-ACCDC67EF61C");
46 MODULE_ALIAS("wmi:5FB7F034-2C63-45e9-BE91-3D44E2C707E4");
47
48 #define HPWMI_EVENT_GUID "95F24279-4D7B-4334-9387-ACCDC67EF61C"
49 #define HPWMI_BIOS_GUID "5FB7F034-2C63-45e9-BE91-3D44E2C707E4"
50
51 #define HPWMI_DISPLAY_QUERY 0x1
52 #define HPWMI_HDDTEMP_QUERY 0x2
53 #define HPWMI_ALS_QUERY 0x3
54 #define HPWMI_HARDWARE_QUERY 0x4
55 #define HPWMI_WIRELESS_QUERY 0x5
56 #define HPWMI_HOTKEY_QUERY 0xc
57 #define HPWMI_WIRELESS2_QUERY 0x1b
58
59 enum hp_wmi_radio {
60 HPWMI_WIFI = 0,
61 HPWMI_BLUETOOTH = 1,
62 HPWMI_WWAN = 2,
63 };
64
65 enum hp_wmi_event_ids {
66 HPWMI_DOCK_EVENT = 1,
67 HPWMI_PARK_HDD = 2,
68 HPWMI_SMART_ADAPTER = 3,
69 HPWMI_BEZEL_BUTTON = 4,
70 HPWMI_WIRELESS = 5,
71 HPWMI_CPU_BATTERY_THROTTLE = 6,
72 HPWMI_LOCK_SWITCH = 7,
73 };
74
75 static int __devinit hp_wmi_bios_setup(struct platform_device *device);
76 static int __exit hp_wmi_bios_remove(struct platform_device *device);
77 static int hp_wmi_resume_handler(struct device *device);
78
79 struct bios_args {
80 u32 signature;
81 u32 command;
82 u32 commandtype;
83 u32 datasize;
84 u32 data;
85 };
86
87 struct bios_return {
88 u32 sigpass;
89 u32 return_code;
90 };
91
92 enum 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
99 enum hp_wireless2_bits {
100 HPWMI_POWER_STATE = 0x01,
101 HPWMI_POWER_SOFT = 0x02,
102 HPWMI_POWER_BIOS = 0x04,
103 HPWMI_POWER_HARD = 0x08,
104 };
105
106 #define IS_HWBLOCKED(x) ((x & (HPWMI_POWER_BIOS | HPWMI_POWER_HARD)) \
107 != (HPWMI_POWER_BIOS | HPWMI_POWER_HARD))
108 #define IS_SWBLOCKED(x) !(x & HPWMI_POWER_SOFT)
109
110 struct bios_rfkill2_device_state {
111 u8 radio_type;
112 u8 bus_type;
113 u16 vendor_id;
114 u16 product_id;
115 u16 subsys_vendor_id;
116 u16 subsys_product_id;
117 u8 rfkill_id;
118 u8 power;
119 u8 unknown[4];
120 };
121
122 /* 7 devices fit into the 128 byte buffer */
123 #define HPWMI_MAX_RFKILL2_DEVICES 7
124
125 struct bios_rfkill2_state {
126 u8 unknown[7];
127 u8 count;
128 u8 pad[8];
129 struct bios_rfkill2_device_state device[HPWMI_MAX_RFKILL2_DEVICES];
130 };
131
132 static const struct key_entry hp_wmi_keymap[] = {
133 { KE_KEY, 0x02, { KEY_BRIGHTNESSUP } },
134 { KE_KEY, 0x03, { KEY_BRIGHTNESSDOWN } },
135 { KE_KEY, 0x20e6, { KEY_PROG1 } },
136 { KE_KEY, 0x20e8, { KEY_MEDIA } },
137 { KE_KEY, 0x2142, { KEY_MEDIA } },
138 { KE_KEY, 0x213b, { KEY_INFO } },
139 { KE_KEY, 0x2169, { KEY_DIRECTION } },
140 { KE_KEY, 0x231b, { KEY_HELP } },
141 { KE_END, 0 }
142 };
143
144 static struct input_dev *hp_wmi_input_dev;
145 static struct platform_device *hp_wmi_platform_dev;
146
147 static struct rfkill *wifi_rfkill;
148 static struct rfkill *bluetooth_rfkill;
149 static struct rfkill *wwan_rfkill;
150
151 struct rfkill2_device {
152 u8 id;
153 int num;
154 struct rfkill *rfkill;
155 };
156
157 static int rfkill2_count;
158 static struct rfkill2_device rfkill2[HPWMI_MAX_RFKILL2_DEVICES];
159
160 static const struct dev_pm_ops hp_wmi_pm_ops = {
161 .resume = hp_wmi_resume_handler,
162 .restore = hp_wmi_resume_handler,
163 };
164
165 static struct platform_driver hp_wmi_driver = {
166 .driver = {
167 .name = "hp-wmi",
168 .owner = THIS_MODULE,
169 .pm = &hp_wmi_pm_ops,
170 },
171 .probe = hp_wmi_bios_setup,
172 .remove = hp_wmi_bios_remove,
173 };
174
175 /*
176 * hp_wmi_perform_query
177 *
178 * query: The commandtype -> What should be queried
179 * write: The command -> 0 read, 1 write, 3 ODM specific
180 * buffer: Buffer used as input and/or output
181 * insize: Size of input buffer
182 * outsize: Size of output buffer
183 *
184 * returns zero on success
185 * an HP WMI query specific error code (which is positive)
186 * -EINVAL if the query was not successful at all
187 * -EINVAL if the output buffer size exceeds buffersize
188 *
189 * Note: The buffersize must at least be the maximum of the input and output
190 * size. E.g. Battery info query (0x7) is defined to have 1 byte input
191 * and 128 byte output. The caller would do:
192 * buffer = kzalloc(128, GFP_KERNEL);
193 * ret = hp_wmi_perform_query(0x7, 0, buffer, 1, 128)
194 */
195 static int hp_wmi_perform_query(int query, int write, void *buffer,
196 int insize, int outsize)
197 {
198 struct bios_return *bios_return;
199 int actual_outsize;
200 union acpi_object *obj;
201 struct bios_args args = {
202 .signature = 0x55434553,
203 .command = write ? 0x2 : 0x1,
204 .commandtype = query,
205 .datasize = insize,
206 .data = 0,
207 };
208 struct acpi_buffer input = { sizeof(struct bios_args), &args };
209 struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
210
211 if (WARN_ON(insize > sizeof(args.data)))
212 return -EINVAL;
213 memcpy(&args.data, buffer, insize);
214
215 wmi_evaluate_method(HPWMI_BIOS_GUID, 0, 0x3, &input, &output);
216
217 obj = output.pointer;
218
219 if (!obj)
220 return -EINVAL;
221 else if (obj->type != ACPI_TYPE_BUFFER) {
222 kfree(obj);
223 return -EINVAL;
224 }
225
226 bios_return = (struct bios_return *)obj->buffer.pointer;
227
228 if (bios_return->return_code) {
229 if (bios_return->return_code != HPWMI_RET_UNKNOWN_CMDTYPE)
230 pr_warn("query 0x%x returned error 0x%x\n",
231 query, bios_return->return_code);
232 kfree(obj);
233 return bios_return->return_code;
234 }
235
236 if (!outsize) {
237 /* ignore output data */
238 kfree(obj);
239 return 0;
240 }
241
242 actual_outsize = min(outsize, (int)(obj->buffer.length - sizeof(*bios_return)));
243 memcpy(buffer, obj->buffer.pointer + sizeof(*bios_return), actual_outsize);
244 memset(buffer + actual_outsize, 0, outsize - actual_outsize);
245 kfree(obj);
246 return 0;
247 }
248
249 static int hp_wmi_display_state(void)
250 {
251 int state = 0;
252 int ret = hp_wmi_perform_query(HPWMI_DISPLAY_QUERY, 0, &state,
253 sizeof(state), sizeof(state));
254 if (ret)
255 return -EINVAL;
256 return state;
257 }
258
259 static int hp_wmi_hddtemp_state(void)
260 {
261 int state = 0;
262 int ret = hp_wmi_perform_query(HPWMI_HDDTEMP_QUERY, 0, &state,
263 sizeof(state), sizeof(state));
264 if (ret)
265 return -EINVAL;
266 return state;
267 }
268
269 static int hp_wmi_als_state(void)
270 {
271 int state = 0;
272 int ret = hp_wmi_perform_query(HPWMI_ALS_QUERY, 0, &state,
273 sizeof(state), sizeof(state));
274 if (ret)
275 return -EINVAL;
276 return state;
277 }
278
279 static int hp_wmi_dock_state(void)
280 {
281 int state = 0;
282 int ret = hp_wmi_perform_query(HPWMI_HARDWARE_QUERY, 0, &state,
283 sizeof(state), sizeof(state));
284
285 if (ret)
286 return -EINVAL;
287
288 return state & 0x1;
289 }
290
291 static int hp_wmi_tablet_state(void)
292 {
293 int state = 0;
294 int ret = hp_wmi_perform_query(HPWMI_HARDWARE_QUERY, 0, &state,
295 sizeof(state), sizeof(state));
296 if (ret)
297 return ret;
298
299 return (state & 0x4) ? 1 : 0;
300 }
301
302 static int hp_wmi_set_block(void *data, bool blocked)
303 {
304 enum hp_wmi_radio r = (enum hp_wmi_radio) data;
305 int query = BIT(r + 8) | ((!blocked) << r);
306 int ret;
307
308 ret = hp_wmi_perform_query(HPWMI_WIRELESS_QUERY, 1,
309 &query, sizeof(query), 0);
310 if (ret)
311 return -EINVAL;
312 return 0;
313 }
314
315 static const struct rfkill_ops hp_wmi_rfkill_ops = {
316 .set_block = hp_wmi_set_block,
317 };
318
319 static bool hp_wmi_get_sw_state(enum hp_wmi_radio r)
320 {
321 int wireless = 0;
322 int mask;
323 hp_wmi_perform_query(HPWMI_WIRELESS_QUERY, 0,
324 &wireless, sizeof(wireless),
325 sizeof(wireless));
326 /* TBD: Pass error */
327
328 mask = 0x200 << (r * 8);
329
330 if (wireless & mask)
331 return false;
332 else
333 return true;
334 }
335
336 static bool hp_wmi_get_hw_state(enum hp_wmi_radio r)
337 {
338 int wireless = 0;
339 int mask;
340 hp_wmi_perform_query(HPWMI_WIRELESS_QUERY, 0,
341 &wireless, sizeof(wireless),
342 sizeof(wireless));
343 /* TBD: Pass error */
344
345 mask = 0x800 << (r * 8);
346
347 if (wireless & mask)
348 return false;
349 else
350 return true;
351 }
352
353 static int hp_wmi_rfkill2_set_block(void *data, bool blocked)
354 {
355 int rfkill_id = (int)(long)data;
356 char buffer[4] = { 0x01, 0x00, rfkill_id, !blocked };
357
358 if (hp_wmi_perform_query(HPWMI_WIRELESS2_QUERY, 1,
359 buffer, sizeof(buffer), 0))
360 return -EINVAL;
361 return 0;
362 }
363
364 static const struct rfkill_ops hp_wmi_rfkill2_ops = {
365 .set_block = hp_wmi_rfkill2_set_block,
366 };
367
368 static int hp_wmi_rfkill2_refresh(void)
369 {
370 int err, i;
371 struct bios_rfkill2_state state;
372
373 err = hp_wmi_perform_query(HPWMI_WIRELESS2_QUERY, 0, &state,
374 0, sizeof(state));
375 if (err)
376 return err;
377
378 for (i = 0; i < rfkill2_count; i++) {
379 int num = rfkill2[i].num;
380 struct bios_rfkill2_device_state *devstate;
381 devstate = &state.device[num];
382
383 if (num >= state.count ||
384 devstate->rfkill_id != rfkill2[i].id) {
385 pr_warn("power configuration of the wireless devices unexpectedly changed\n");
386 continue;
387 }
388
389 rfkill_set_states(rfkill2[i].rfkill,
390 IS_SWBLOCKED(devstate->power),
391 IS_HWBLOCKED(devstate->power));
392 }
393
394 return 0;
395 }
396
397 static ssize_t show_display(struct device *dev, struct device_attribute *attr,
398 char *buf)
399 {
400 int value = hp_wmi_display_state();
401 if (value < 0)
402 return -EINVAL;
403 return sprintf(buf, "%d\n", value);
404 }
405
406 static ssize_t show_hddtemp(struct device *dev, struct device_attribute *attr,
407 char *buf)
408 {
409 int value = hp_wmi_hddtemp_state();
410 if (value < 0)
411 return -EINVAL;
412 return sprintf(buf, "%d\n", value);
413 }
414
415 static ssize_t show_als(struct device *dev, struct device_attribute *attr,
416 char *buf)
417 {
418 int value = hp_wmi_als_state();
419 if (value < 0)
420 return -EINVAL;
421 return sprintf(buf, "%d\n", value);
422 }
423
424 static ssize_t show_dock(struct device *dev, struct device_attribute *attr,
425 char *buf)
426 {
427 int value = hp_wmi_dock_state();
428 if (value < 0)
429 return -EINVAL;
430 return sprintf(buf, "%d\n", value);
431 }
432
433 static ssize_t show_tablet(struct device *dev, struct device_attribute *attr,
434 char *buf)
435 {
436 int value = hp_wmi_tablet_state();
437 if (value < 0)
438 return -EINVAL;
439 return sprintf(buf, "%d\n", value);
440 }
441
442 static ssize_t set_als(struct device *dev, struct device_attribute *attr,
443 const char *buf, size_t count)
444 {
445 u32 tmp = simple_strtoul(buf, NULL, 10);
446 int ret = hp_wmi_perform_query(HPWMI_ALS_QUERY, 1, &tmp,
447 sizeof(tmp), sizeof(tmp));
448 if (ret)
449 return -EINVAL;
450
451 return count;
452 }
453
454 static DEVICE_ATTR(display, S_IRUGO, show_display, NULL);
455 static DEVICE_ATTR(hddtemp, S_IRUGO, show_hddtemp, NULL);
456 static DEVICE_ATTR(als, S_IRUGO | S_IWUSR, show_als, set_als);
457 static DEVICE_ATTR(dock, S_IRUGO, show_dock, NULL);
458 static DEVICE_ATTR(tablet, S_IRUGO, show_tablet, NULL);
459
460 static void hp_wmi_notify(u32 value, void *context)
461 {
462 struct acpi_buffer response = { ACPI_ALLOCATE_BUFFER, NULL };
463 union acpi_object *obj;
464 u32 event_id, event_data;
465 int key_code = 0, ret;
466 u32 *location;
467 acpi_status status;
468
469 status = wmi_get_event_data(value, &response);
470 if (status != AE_OK) {
471 pr_info("bad event status 0x%x\n", status);
472 return;
473 }
474
475 obj = (union acpi_object *)response.pointer;
476
477 if (!obj)
478 return;
479 if (obj->type != ACPI_TYPE_BUFFER) {
480 pr_info("Unknown response received %d\n", obj->type);
481 kfree(obj);
482 return;
483 }
484
485 /*
486 * Depending on ACPI version the concatenation of id and event data
487 * inside _WED function will result in a 8 or 16 byte buffer.
488 */
489 location = (u32 *)obj->buffer.pointer;
490 if (obj->buffer.length == 8) {
491 event_id = *location;
492 event_data = *(location + 1);
493 } else if (obj->buffer.length == 16) {
494 event_id = *location;
495 event_data = *(location + 2);
496 } else {
497 pr_info("Unknown buffer length %d\n", obj->buffer.length);
498 kfree(obj);
499 return;
500 }
501 kfree(obj);
502
503 switch (event_id) {
504 case HPWMI_DOCK_EVENT:
505 input_report_switch(hp_wmi_input_dev, SW_DOCK,
506 hp_wmi_dock_state());
507 input_report_switch(hp_wmi_input_dev, SW_TABLET_MODE,
508 hp_wmi_tablet_state());
509 input_sync(hp_wmi_input_dev);
510 break;
511 case HPWMI_PARK_HDD:
512 break;
513 case HPWMI_SMART_ADAPTER:
514 break;
515 case HPWMI_BEZEL_BUTTON:
516 ret = hp_wmi_perform_query(HPWMI_HOTKEY_QUERY, 0,
517 &key_code,
518 sizeof(key_code),
519 sizeof(key_code));
520 if (ret)
521 break;
522
523 if (!sparse_keymap_report_event(hp_wmi_input_dev,
524 key_code, 1, true))
525 pr_info("Unknown key code - 0x%x\n", key_code);
526 break;
527 case HPWMI_WIRELESS:
528 if (rfkill2_count) {
529 hp_wmi_rfkill2_refresh();
530 break;
531 }
532
533 if (wifi_rfkill)
534 rfkill_set_states(wifi_rfkill,
535 hp_wmi_get_sw_state(HPWMI_WIFI),
536 hp_wmi_get_hw_state(HPWMI_WIFI));
537 if (bluetooth_rfkill)
538 rfkill_set_states(bluetooth_rfkill,
539 hp_wmi_get_sw_state(HPWMI_BLUETOOTH),
540 hp_wmi_get_hw_state(HPWMI_BLUETOOTH));
541 if (wwan_rfkill)
542 rfkill_set_states(wwan_rfkill,
543 hp_wmi_get_sw_state(HPWMI_WWAN),
544 hp_wmi_get_hw_state(HPWMI_WWAN));
545 break;
546 case HPWMI_CPU_BATTERY_THROTTLE:
547 pr_info("Unimplemented CPU throttle because of 3 Cell battery event detected\n");
548 break;
549 case HPWMI_LOCK_SWITCH:
550 break;
551 default:
552 pr_info("Unknown event_id - %d - 0x%x\n", event_id, event_data);
553 break;
554 }
555 }
556
557 static int __init hp_wmi_input_setup(void)
558 {
559 acpi_status status;
560 int err;
561
562 hp_wmi_input_dev = input_allocate_device();
563 if (!hp_wmi_input_dev)
564 return -ENOMEM;
565
566 hp_wmi_input_dev->name = "HP WMI hotkeys";
567 hp_wmi_input_dev->phys = "wmi/input0";
568 hp_wmi_input_dev->id.bustype = BUS_HOST;
569
570 __set_bit(EV_SW, hp_wmi_input_dev->evbit);
571 __set_bit(SW_DOCK, hp_wmi_input_dev->swbit);
572 __set_bit(SW_TABLET_MODE, hp_wmi_input_dev->swbit);
573
574 err = sparse_keymap_setup(hp_wmi_input_dev, hp_wmi_keymap, NULL);
575 if (err)
576 goto err_free_dev;
577
578 /* Set initial hardware state */
579 input_report_switch(hp_wmi_input_dev, SW_DOCK, hp_wmi_dock_state());
580 input_report_switch(hp_wmi_input_dev, SW_TABLET_MODE,
581 hp_wmi_tablet_state());
582 input_sync(hp_wmi_input_dev);
583
584 status = wmi_install_notify_handler(HPWMI_EVENT_GUID, hp_wmi_notify, NULL);
585 if (ACPI_FAILURE(status)) {
586 err = -EIO;
587 goto err_free_keymap;
588 }
589
590 err = input_register_device(hp_wmi_input_dev);
591 if (err)
592 goto err_uninstall_notifier;
593
594 return 0;
595
596 err_uninstall_notifier:
597 wmi_remove_notify_handler(HPWMI_EVENT_GUID);
598 err_free_keymap:
599 sparse_keymap_free(hp_wmi_input_dev);
600 err_free_dev:
601 input_free_device(hp_wmi_input_dev);
602 return err;
603 }
604
605 static void hp_wmi_input_destroy(void)
606 {
607 wmi_remove_notify_handler(HPWMI_EVENT_GUID);
608 sparse_keymap_free(hp_wmi_input_dev);
609 input_unregister_device(hp_wmi_input_dev);
610 }
611
612 static void cleanup_sysfs(struct platform_device *device)
613 {
614 device_remove_file(&device->dev, &dev_attr_display);
615 device_remove_file(&device->dev, &dev_attr_hddtemp);
616 device_remove_file(&device->dev, &dev_attr_als);
617 device_remove_file(&device->dev, &dev_attr_dock);
618 device_remove_file(&device->dev, &dev_attr_tablet);
619 }
620
621 static int __devinit hp_wmi_rfkill_setup(struct platform_device *device)
622 {
623 int err;
624 int wireless = 0;
625
626 err = hp_wmi_perform_query(HPWMI_WIRELESS_QUERY, 0, &wireless,
627 sizeof(wireless), sizeof(wireless));
628 if (err)
629 return err;
630
631 if (wireless & 0x1) {
632 wifi_rfkill = rfkill_alloc("hp-wifi", &device->dev,
633 RFKILL_TYPE_WLAN,
634 &hp_wmi_rfkill_ops,
635 (void *) HPWMI_WIFI);
636 rfkill_init_sw_state(wifi_rfkill,
637 hp_wmi_get_sw_state(HPWMI_WIFI));
638 rfkill_set_hw_state(wifi_rfkill,
639 hp_wmi_get_hw_state(HPWMI_WIFI));
640 err = rfkill_register(wifi_rfkill);
641 if (err)
642 goto register_wifi_error;
643 }
644
645 if (wireless & 0x2) {
646 bluetooth_rfkill = rfkill_alloc("hp-bluetooth", &device->dev,
647 RFKILL_TYPE_BLUETOOTH,
648 &hp_wmi_rfkill_ops,
649 (void *) HPWMI_BLUETOOTH);
650 rfkill_init_sw_state(bluetooth_rfkill,
651 hp_wmi_get_sw_state(HPWMI_BLUETOOTH));
652 rfkill_set_hw_state(bluetooth_rfkill,
653 hp_wmi_get_hw_state(HPWMI_BLUETOOTH));
654 err = rfkill_register(bluetooth_rfkill);
655 if (err)
656 goto register_bluetooth_error;
657 }
658
659 if (wireless & 0x4) {
660 wwan_rfkill = rfkill_alloc("hp-wwan", &device->dev,
661 RFKILL_TYPE_WWAN,
662 &hp_wmi_rfkill_ops,
663 (void *) HPWMI_WWAN);
664 rfkill_init_sw_state(wwan_rfkill,
665 hp_wmi_get_sw_state(HPWMI_WWAN));
666 rfkill_set_hw_state(wwan_rfkill,
667 hp_wmi_get_hw_state(HPWMI_WWAN));
668 err = rfkill_register(wwan_rfkill);
669 if (err)
670 goto register_wwan_err;
671 }
672
673 return 0;
674 register_wwan_err:
675 rfkill_destroy(wwan_rfkill);
676 wwan_rfkill = NULL;
677 if (bluetooth_rfkill)
678 rfkill_unregister(bluetooth_rfkill);
679 register_bluetooth_error:
680 rfkill_destroy(bluetooth_rfkill);
681 bluetooth_rfkill = NULL;
682 if (wifi_rfkill)
683 rfkill_unregister(wifi_rfkill);
684 register_wifi_error:
685 rfkill_destroy(wifi_rfkill);
686 wifi_rfkill = NULL;
687 return err;
688 }
689
690 static int __devinit hp_wmi_rfkill2_setup(struct platform_device *device)
691 {
692 int err, i;
693 struct bios_rfkill2_state state;
694 err = hp_wmi_perform_query(HPWMI_WIRELESS2_QUERY, 0, &state,
695 0, sizeof(state));
696 if (err)
697 return err;
698
699 if (state.count > HPWMI_MAX_RFKILL2_DEVICES) {
700 pr_warn("unable to parse 0x1b query output\n");
701 return -EINVAL;
702 }
703
704 for (i = 0; i < state.count; i++) {
705 struct rfkill *rfkill;
706 enum rfkill_type type;
707 char *name;
708 switch (state.device[i].radio_type) {
709 case HPWMI_WIFI:
710 type = RFKILL_TYPE_WLAN;
711 name = "hp-wifi";
712 break;
713 case HPWMI_BLUETOOTH:
714 type = RFKILL_TYPE_BLUETOOTH;
715 name = "hp-bluetooth";
716 break;
717 case HPWMI_WWAN:
718 type = RFKILL_TYPE_WWAN;
719 name = "hp-wwan";
720 break;
721 default:
722 pr_warn("unknown device type 0x%x\n",
723 state.device[i].radio_type);
724 continue;
725 }
726
727 if (!state.device[i].vendor_id) {
728 pr_warn("zero device %d while %d reported\n",
729 i, state.count);
730 continue;
731 }
732
733 rfkill = rfkill_alloc(name, &device->dev, type,
734 &hp_wmi_rfkill2_ops, (void *)(long)i);
735 if (!rfkill) {
736 err = -ENOMEM;
737 goto fail;
738 }
739
740 rfkill2[rfkill2_count].id = state.device[i].rfkill_id;
741 rfkill2[rfkill2_count].num = i;
742 rfkill2[rfkill2_count].rfkill = rfkill;
743
744 rfkill_init_sw_state(rfkill,
745 IS_SWBLOCKED(state.device[i].power));
746 rfkill_set_hw_state(rfkill,
747 IS_HWBLOCKED(state.device[i].power));
748
749 if (!(state.device[i].power & HPWMI_POWER_BIOS))
750 pr_info("device %s blocked by BIOS\n", name);
751
752 err = rfkill_register(rfkill);
753 if (err) {
754 rfkill_destroy(rfkill);
755 goto fail;
756 }
757
758 rfkill2_count++;
759 }
760
761 return 0;
762 fail:
763 for (; rfkill2_count > 0; rfkill2_count--) {
764 rfkill_unregister(rfkill2[rfkill2_count - 1].rfkill);
765 rfkill_destroy(rfkill2[rfkill2_count - 1].rfkill);
766 }
767 return err;
768 }
769
770 static int __devinit hp_wmi_bios_setup(struct platform_device *device)
771 {
772 int err;
773
774 /* clear detected rfkill devices */
775 wifi_rfkill = NULL;
776 bluetooth_rfkill = NULL;
777 wwan_rfkill = NULL;
778 rfkill2_count = 0;
779
780 if (hp_wmi_rfkill_setup(device))
781 hp_wmi_rfkill2_setup(device);
782
783 err = device_create_file(&device->dev, &dev_attr_display);
784 if (err)
785 goto add_sysfs_error;
786 err = device_create_file(&device->dev, &dev_attr_hddtemp);
787 if (err)
788 goto add_sysfs_error;
789 err = device_create_file(&device->dev, &dev_attr_als);
790 if (err)
791 goto add_sysfs_error;
792 err = device_create_file(&device->dev, &dev_attr_dock);
793 if (err)
794 goto add_sysfs_error;
795 err = device_create_file(&device->dev, &dev_attr_tablet);
796 if (err)
797 goto add_sysfs_error;
798 return 0;
799
800 add_sysfs_error:
801 cleanup_sysfs(device);
802 return err;
803 }
804
805 static int __exit hp_wmi_bios_remove(struct platform_device *device)
806 {
807 int i;
808 cleanup_sysfs(device);
809
810 for (i = 0; i < rfkill2_count; i++) {
811 rfkill_unregister(rfkill2[i].rfkill);
812 rfkill_destroy(rfkill2[i].rfkill);
813 }
814
815 if (wifi_rfkill) {
816 rfkill_unregister(wifi_rfkill);
817 rfkill_destroy(wifi_rfkill);
818 }
819 if (bluetooth_rfkill) {
820 rfkill_unregister(bluetooth_rfkill);
821 rfkill_destroy(bluetooth_rfkill);
822 }
823 if (wwan_rfkill) {
824 rfkill_unregister(wwan_rfkill);
825 rfkill_destroy(wwan_rfkill);
826 }
827
828 return 0;
829 }
830
831 static int hp_wmi_resume_handler(struct device *device)
832 {
833 /*
834 * Hardware state may have changed while suspended, so trigger
835 * input events for the current state. As this is a switch,
836 * the input layer will only actually pass it on if the state
837 * changed.
838 */
839 if (hp_wmi_input_dev) {
840 input_report_switch(hp_wmi_input_dev, SW_DOCK,
841 hp_wmi_dock_state());
842 input_report_switch(hp_wmi_input_dev, SW_TABLET_MODE,
843 hp_wmi_tablet_state());
844 input_sync(hp_wmi_input_dev);
845 }
846
847 if (rfkill2_count)
848 hp_wmi_rfkill2_refresh();
849
850 if (wifi_rfkill)
851 rfkill_set_states(wifi_rfkill,
852 hp_wmi_get_sw_state(HPWMI_WIFI),
853 hp_wmi_get_hw_state(HPWMI_WIFI));
854 if (bluetooth_rfkill)
855 rfkill_set_states(bluetooth_rfkill,
856 hp_wmi_get_sw_state(HPWMI_BLUETOOTH),
857 hp_wmi_get_hw_state(HPWMI_BLUETOOTH));
858 if (wwan_rfkill)
859 rfkill_set_states(wwan_rfkill,
860 hp_wmi_get_sw_state(HPWMI_WWAN),
861 hp_wmi_get_hw_state(HPWMI_WWAN));
862
863 return 0;
864 }
865
866 static int __init hp_wmi_init(void)
867 {
868 int err;
869 int event_capable = wmi_has_guid(HPWMI_EVENT_GUID);
870 int bios_capable = wmi_has_guid(HPWMI_BIOS_GUID);
871
872 if (event_capable) {
873 err = hp_wmi_input_setup();
874 if (err)
875 return err;
876 }
877
878 if (bios_capable) {
879 err = platform_driver_register(&hp_wmi_driver);
880 if (err)
881 goto err_driver_reg;
882 hp_wmi_platform_dev = platform_device_alloc("hp-wmi", -1);
883 if (!hp_wmi_platform_dev) {
884 err = -ENOMEM;
885 goto err_device_alloc;
886 }
887 err = platform_device_add(hp_wmi_platform_dev);
888 if (err)
889 goto err_device_add;
890 }
891
892 if (!bios_capable && !event_capable)
893 return -ENODEV;
894
895 return 0;
896
897 err_device_add:
898 platform_device_put(hp_wmi_platform_dev);
899 err_device_alloc:
900 platform_driver_unregister(&hp_wmi_driver);
901 err_driver_reg:
902 if (event_capable)
903 hp_wmi_input_destroy();
904
905 return err;
906 }
907
908 static void __exit hp_wmi_exit(void)
909 {
910 if (wmi_has_guid(HPWMI_EVENT_GUID))
911 hp_wmi_input_destroy();
912
913 if (hp_wmi_platform_dev) {
914 platform_device_unregister(hp_wmi_platform_dev);
915 platform_driver_unregister(&hp_wmi_driver);
916 }
917 }
918
919 module_init(hp_wmi_init);
920 module_exit(hp_wmi_exit);
Linux 2.6 ibm-acpi/thinkpad-acpi driver git tree