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 #include <linux/kernel.h>
28 #include <linux/module.h>
29 #include <linux/init.h>
30 #include <linux/slab.h>
31 #include <linux/types.h>
32 #include <linux/input.h>
33 #include <linux/input/sparse-keymap.h>
34 #include <linux/platform_device.h>
35 #include <linux/acpi.h>
36 #include <linux/rfkill.h>
37 #include <linux/string.h>
38
39 MODULE_AUTHOR("Matthew Garrett <mjg59@srcf.ucam.org>");
40 MODULE_DESCRIPTION("HP laptop WMI hotkeys driver");
41 MODULE_LICENSE("GPL");
42
43 MODULE_ALIAS("wmi:95F24279-4D7B-4334-9387-ACCDC67EF61C");
44 MODULE_ALIAS("wmi:5FB7F034-2C63-45e9-BE91-3D44E2C707E4");
45
46 #define HPWMI_EVENT_GUID "95F24279-4D7B-4334-9387-ACCDC67EF61C"
47 #define HPWMI_BIOS_GUID "5FB7F034-2C63-45e9-BE91-3D44E2C707E4"
48
49 #define HPWMI_DISPLAY_QUERY 0x1
50 #define HPWMI_HDDTEMP_QUERY 0x2
51 #define HPWMI_ALS_QUERY 0x3
52 #define HPWMI_HARDWARE_QUERY 0x4
53 #define HPWMI_WIRELESS_QUERY 0x5
54 #define HPWMI_HOTKEY_QUERY 0xc
55 #define HPWMI_WIRELESS2_QUERY 0x1b
56
57 #define PREFIX "HP WMI: "
58 #define UNIMP "Unimplemented "
59
60 enum hp_wmi_radio {
61 HPWMI_WIFI = 0,
62 HPWMI_BLUETOOTH = 1,
63 HPWMI_WWAN = 2,
64 };
65
66 enum hp_wmi_event_ids {
67 HPWMI_DOCK_EVENT = 1,
68 HPWMI_PARK_HDD = 2,
69 HPWMI_SMART_ADAPTER = 3,
70 HPWMI_BEZEL_BUTTON = 4,
71 HPWMI_WIRELESS = 5,
72 HPWMI_CPU_BATTERY_THROTTLE = 6,
73 HPWMI_LOCK_SWITCH = 7,
74 };
75
76 static int __devinit hp_wmi_bios_setup(struct platform_device *device);
77 static int __exit hp_wmi_bios_remove(struct platform_device *device);
78 static int hp_wmi_resume_handler(struct device *device);
79
80 struct bios_args {
81 u32 signature;
82 u32 command;
83 u32 commandtype;
84 u32 datasize;
85 u32 data;
86 };
87
88 struct bios_return {
89 u32 sigpass;
90 u32 return_code;
91 };
92
93 enum hp_return_value {
94 HPWMI_RET_WRONG_SIGNATURE = 0x02,
95 HPWMI_RET_UNKNOWN_COMMAND = 0x03,
96 HPWMI_RET_UNKNOWN_CMDTYPE = 0x04,
97 HPWMI_RET_INVALID_PARAMETERS = 0x05,
98 };
99
100 enum hp_wireless2_bits {
101 HPWMI_POWER_STATE = 0x01,
102 HPWMI_POWER_SOFT = 0x02,
103 HPWMI_POWER_BIOS = 0x04,
104 HPWMI_POWER_HARD = 0x08,
105 };
106
107 #define IS_HWBLOCKED(x) ((x & (HPWMI_POWER_BIOS | HPWMI_POWER_HARD)) \
108 != (HPWMI_POWER_BIOS | HPWMI_POWER_HARD))
109 #define IS_SWBLOCKED(x) !(x & HPWMI_POWER_SOFT)
110
111 struct bios_rfkill2_device_state {
112 u8 radio_type;
113 u8 bus_type;
114 u16 vendor_id;
115 u16 product_id;
116 u16 subsys_vendor_id;
117 u16 subsys_product_id;
118 u8 rfkill_id;
119 u8 power;
120 u8 unknown[4];
121 };
122
123 /* 7 devices fit into the 128 byte buffer */
124 #define HPWMI_MAX_RFKILL2_DEVICES 7
125
126 struct bios_rfkill2_state {
127 u8 unknown[7];
128 u8 count;
129 u8 pad[8];
130 struct bios_rfkill2_device_state device[HPWMI_MAX_RFKILL2_DEVICES];
131 };
132
133 static const struct key_entry hp_wmi_keymap[] = {
134 { KE_KEY, 0x02, { KEY_BRIGHTNESSUP } },
135 { KE_KEY, 0x03, { KEY_BRIGHTNESSDOWN } },
136 { KE_KEY, 0x20e6, { KEY_PROG1 } },
137 { KE_KEY, 0x20e8, { KEY_MEDIA } },
138 { KE_KEY, 0x2142, { KEY_MEDIA } },
139 { KE_KEY, 0x213b, { KEY_INFO } },
140 { KE_KEY, 0x2169, { KEY_DIRECTION } },
141 { KE_KEY, 0x231b, { KEY_HELP } },
142 { KE_END, 0 }
143 };
144
145 static struct input_dev *hp_wmi_input_dev;
146 static struct platform_device *hp_wmi_platform_dev;
147
148 static struct rfkill *wifi_rfkill;
149 static struct rfkill *bluetooth_rfkill;
150 static struct rfkill *wwan_rfkill;
151
152 struct rfkill2_device {
153 u8 id;
154 int num;
155 struct rfkill *rfkill;
156 };
157
158 static int rfkill2_count;
159 static struct rfkill2_device rfkill2[HPWMI_MAX_RFKILL2_DEVICES];
160
161 static const struct dev_pm_ops hp_wmi_pm_ops = {
162 .resume = hp_wmi_resume_handler,
163 .restore = hp_wmi_resume_handler,
164 };
165
166 static struct platform_driver hp_wmi_driver = {
167 .driver = {
168 .name = "hp-wmi",
169 .owner = THIS_MODULE,
170 .pm = &hp_wmi_pm_ops,
171 },
172 .probe = hp_wmi_bios_setup,
173 .remove = hp_wmi_bios_remove,
174 };
175
176 /*
177 * hp_wmi_perform_query
178 *
179 * query: The commandtype -> What should be queried
180 * write: The command -> 0 read, 1 write, 3 ODM specific
181 * buffer: Buffer used as input and/or output
182 * insize: Size of input buffer
183 * outsize: Size of output buffer
184 *
185 * returns zero on success
186 * an HP WMI query specific error code (which is positive)
187 * -EINVAL if the query was not successful at all
188 * -EINVAL if the output buffer size exceeds buffersize
189 *
190 * Note: The buffersize must at least be the maximum of the input and output
191 * size. E.g. Battery info query (0x7) is defined to have 1 byte input
192 * and 128 byte output. The caller would do:
193 * buffer = kzalloc(128, GFP_KERNEL);
194 * ret = hp_wmi_perform_query(0x7, 0, buffer, 1, 128)
195 */
hp_wmi_perform_query(int query,int write,void * buffer,int insize,int outsize)196 static int hp_wmi_perform_query(int query, int write, void *buffer,
197 int insize, int outsize)
198 {
199 struct bios_return *bios_return;
200 int actual_outsize;
201 union acpi_object *obj;
202 struct bios_args args = {
203 .signature = 0x55434553,
204 .command = write ? 0x2 : 0x1,
205 .commandtype = query,
206 .datasize = insize,
207 .data = 0,
208 };
209 struct acpi_buffer input = { sizeof(struct bios_args), &args };
210 struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
211
212 if (WARN_ON(insize > sizeof(args.data)))
213 return -EINVAL;
214 memcpy(&args.data, buffer, insize);
215
216 wmi_evaluate_method(HPWMI_BIOS_GUID, 0, 0x3, &input, &output);
217
218 obj = output.pointer;
219
220 if (!obj)
221 return -EINVAL;
222 else if (obj->type != ACPI_TYPE_BUFFER) {
223 kfree(obj);
224 return -EINVAL;
225 }
226
227 bios_return = (struct bios_return *)obj->buffer.pointer;
228
229 if (bios_return->return_code) {
230 if (bios_return->return_code != HPWMI_RET_UNKNOWN_CMDTYPE)
231 printk(KERN_WARNING PREFIX "query 0x%x returned "
232 "error 0x%x\n",
233 query, bios_return->return_code);
234 kfree(obj);
235 return bios_return->return_code;
236 }
237
238 if (!outsize) {
239 /* ignore output data */
240 kfree(obj);
241 return 0;
242 }
243
244 actual_outsize = min(outsize, (int)(obj->buffer.length - sizeof(*bios_return)));
245 memcpy(buffer, obj->buffer.pointer + sizeof(*bios_return), actual_outsize);
246 memset(buffer + actual_outsize, 0, outsize - actual_outsize);
247 kfree(obj);
248 return 0;
249 }
250
hp_wmi_display_state(void)251 static int hp_wmi_display_state(void)
252 {
253 int state = 0;
254 int ret = hp_wmi_perform_query(HPWMI_DISPLAY_QUERY, 0, &state,
255 sizeof(state), sizeof(state));
256 if (ret)
257 return -EINVAL;
258 return state;
259 }
260
hp_wmi_hddtemp_state(void)261 static int hp_wmi_hddtemp_state(void)
262 {
263 int state = 0;
264 int ret = hp_wmi_perform_query(HPWMI_HDDTEMP_QUERY, 0, &state,
265 sizeof(state), sizeof(state));
266 if (ret)
267 return -EINVAL;
268 return state;
269 }
270
hp_wmi_als_state(void)271 static int hp_wmi_als_state(void)
272 {
273 int state = 0;
274 int ret = hp_wmi_perform_query(HPWMI_ALS_QUERY, 0, &state,
275 sizeof(state), sizeof(state));
276 if (ret)
277 return -EINVAL;
278 return state;
279 }
280
hp_wmi_dock_state(void)281 static int hp_wmi_dock_state(void)
282 {
283 int state = 0;
284 int ret = hp_wmi_perform_query(HPWMI_HARDWARE_QUERY, 0, &state,
285 sizeof(state), sizeof(state));
286
287 if (ret)
288 return -EINVAL;
289
290 return state & 0x1;
291 }
292
hp_wmi_tablet_state(void)293 static int hp_wmi_tablet_state(void)
294 {
295 int state = 0;
296 int ret = hp_wmi_perform_query(HPWMI_HARDWARE_QUERY, 0, &state,
297 sizeof(state), sizeof(state));
298 if (ret)
299 return ret;
300
301 return (state & 0x4) ? 1 : 0;
302 }
303
hp_wmi_set_block(void * data,bool blocked)304 static int hp_wmi_set_block(void *data, bool blocked)
305 {
306 enum hp_wmi_radio r = (enum hp_wmi_radio) data;
307 int query = BIT(r + 8) | ((!blocked) << r);
308 int ret;
309
310 ret = hp_wmi_perform_query(HPWMI_WIRELESS_QUERY, 1,
311 &query, sizeof(query), 0);
312 if (ret)
313 return -EINVAL;
314 return 0;
315 }
316
317 static const struct rfkill_ops hp_wmi_rfkill_ops = {
318 .set_block = hp_wmi_set_block,
319 };
320
hp_wmi_get_sw_state(enum hp_wmi_radio r)321 static bool hp_wmi_get_sw_state(enum hp_wmi_radio r)
322 {
323 int wireless = 0;
324 int mask;
325 hp_wmi_perform_query(HPWMI_WIRELESS_QUERY, 0,
326 &wireless, sizeof(wireless),
327 sizeof(wireless));
328 /* TBD: Pass error */
329
330 mask = 0x200 << (r * 8);
331
332 if (wireless & mask)
333 return false;
334 else
335 return true;
336 }
337
hp_wmi_get_hw_state(enum hp_wmi_radio r)338 static bool hp_wmi_get_hw_state(enum hp_wmi_radio r)
339 {
340 int wireless = 0;
341 int mask;
342 hp_wmi_perform_query(HPWMI_WIRELESS_QUERY, 0,
343 &wireless, sizeof(wireless),
344 sizeof(wireless));
345 /* TBD: Pass error */
346
347 mask = 0x800 << (r * 8);
348
349 if (wireless & mask)
350 return false;
351 else
352 return true;
353 }
354
hp_wmi_rfkill2_set_block(void * data,bool blocked)355 static int hp_wmi_rfkill2_set_block(void *data, bool blocked)
356 {
357 int rfkill_id = (int)(long)data;
358 char buffer[4] = { 0x01, 0x00, rfkill_id, !blocked };
359
360 if (hp_wmi_perform_query(HPWMI_WIRELESS2_QUERY, 1,
361 buffer, sizeof(buffer), 0))
362 return -EINVAL;
363 return 0;
364 }
365
366 static const struct rfkill_ops hp_wmi_rfkill2_ops = {
367 .set_block = hp_wmi_rfkill2_set_block,
368 };
369
hp_wmi_rfkill2_refresh(void)370 static int hp_wmi_rfkill2_refresh(void)
371 {
372 int err, i;
373 struct bios_rfkill2_state state;
374
375 err = hp_wmi_perform_query(HPWMI_WIRELESS2_QUERY, 0, &state,
376 0, sizeof(state));
377 if (err)
378 return err;
379
380 for (i = 0; i < rfkill2_count; i++) {
381 int num = rfkill2[i].num;
382 struct bios_rfkill2_device_state *devstate;
383 devstate = &state.device[num];
384
385 if (num >= state.count ||
386 devstate->rfkill_id != rfkill2[i].id) {
387 printk(KERN_WARNING PREFIX "power configuration of "
388 "the wireless devices unexpectedly changed\n");
389 continue;
390 }
391
392 rfkill_set_states(rfkill2[i].rfkill,
393 IS_SWBLOCKED(devstate->power),
394 IS_HWBLOCKED(devstate->power));
395 }
396
397 return 0;
398 }
399
show_display(struct device * dev,struct device_attribute * attr,char * buf)400 static ssize_t show_display(struct device *dev, struct device_attribute *attr,
401 char *buf)
402 {
403 int value = hp_wmi_display_state();
404 if (value < 0)
405 return -EINVAL;
406 return sprintf(buf, "%d\n", value);
407 }
408
show_hddtemp(struct device * dev,struct device_attribute * attr,char * buf)409 static ssize_t show_hddtemp(struct device *dev, struct device_attribute *attr,
410 char *buf)
411 {
412 int value = hp_wmi_hddtemp_state();
413 if (value < 0)
414 return -EINVAL;
415 return sprintf(buf, "%d\n", value);
416 }
417
show_als(struct device * dev,struct device_attribute * attr,char * buf)418 static ssize_t show_als(struct device *dev, struct device_attribute *attr,
419 char *buf)
420 {
421 int value = hp_wmi_als_state();
422 if (value < 0)
423 return -EINVAL;
424 return sprintf(buf, "%d\n", value);
425 }
426
show_dock(struct device * dev,struct device_attribute * attr,char * buf)427 static ssize_t show_dock(struct device *dev, struct device_attribute *attr,
428 char *buf)
429 {
430 int value = hp_wmi_dock_state();
431 if (value < 0)
432 return -EINVAL;
433 return sprintf(buf, "%d\n", value);
434 }
435
show_tablet(struct device * dev,struct device_attribute * attr,char * buf)436 static ssize_t show_tablet(struct device *dev, struct device_attribute *attr,
437 char *buf)
438 {
439 int value = hp_wmi_tablet_state();
440 if (value < 0)
441 return -EINVAL;
442 return sprintf(buf, "%d\n", value);
443 }
444
set_als(struct device * dev,struct device_attribute * attr,const char * buf,size_t count)445 static ssize_t set_als(struct device *dev, struct device_attribute *attr,
446 const char *buf, size_t count)
447 {
448 u32 tmp = simple_strtoul(buf, NULL, 10);
449 int ret = hp_wmi_perform_query(HPWMI_ALS_QUERY, 1, &tmp,
450 sizeof(tmp), sizeof(tmp));
451 if (ret)
452 return -EINVAL;
453
454 return count;
455 }
456
457 static DEVICE_ATTR(display, S_IRUGO, show_display, NULL);
458 static DEVICE_ATTR(hddtemp, S_IRUGO, show_hddtemp, NULL);
459 static DEVICE_ATTR(als, S_IRUGO | S_IWUSR, show_als, set_als);
460 static DEVICE_ATTR(dock, S_IRUGO, show_dock, NULL);
461 static DEVICE_ATTR(tablet, S_IRUGO, show_tablet, NULL);
462
hp_wmi_notify(u32 value,void * context)463 static void hp_wmi_notify(u32 value, void *context)
464 {
465 struct acpi_buffer response = { ACPI_ALLOCATE_BUFFER, NULL };
466 union acpi_object *obj;
467 u32 event_id, event_data;
468 int key_code = 0, ret;
469 u32 *location;
470 acpi_status status;
471
472 status = wmi_get_event_data(value, &response);
473 if (status != AE_OK) {
474 printk(KERN_INFO PREFIX "bad event status 0x%x\n", status);
475 return;
476 }
477
478 obj = (union acpi_object *)response.pointer;
479
480 if (!obj)
481 return;
482 if (obj->type != ACPI_TYPE_BUFFER) {
483 printk(KERN_INFO "hp-wmi: Unknown response received %d\n",
484 obj->type);
485 kfree(obj);
486 return;
487 }
488
489 /*
490 * Depending on ACPI version the concatenation of id and event data
491 * inside _WED function will result in a 8 or 16 byte buffer.
492 */
493 location = (u32 *)obj->buffer.pointer;
494 if (obj->buffer.length == 8) {
495 event_id = *location;
496 event_data = *(location + 1);
497 } else if (obj->buffer.length == 16) {
498 event_id = *location;
499 event_data = *(location + 2);
500 } else {
501 printk(KERN_INFO "hp-wmi: Unknown buffer length %d\n",
502 obj->buffer.length);
503 kfree(obj);
504 return;
505 }
506 kfree(obj);
507
508 switch (event_id) {
509 case HPWMI_DOCK_EVENT:
510 input_report_switch(hp_wmi_input_dev, SW_DOCK,
511 hp_wmi_dock_state());
512 input_report_switch(hp_wmi_input_dev, SW_TABLET_MODE,
513 hp_wmi_tablet_state());
514 input_sync(hp_wmi_input_dev);
515 break;
516 case HPWMI_PARK_HDD:
517 break;
518 case HPWMI_SMART_ADAPTER:
519 break;
520 case HPWMI_BEZEL_BUTTON:
521 ret = hp_wmi_perform_query(HPWMI_HOTKEY_QUERY, 0,
522 &key_code,
523 sizeof(key_code),
524 sizeof(key_code));
525 if (ret)
526 break;
527
528 if (!sparse_keymap_report_event(hp_wmi_input_dev,
529 key_code, 1, true))
530 printk(KERN_INFO PREFIX "Unknown key code - 0x%x\n",
531 key_code);
532 break;
533 case HPWMI_WIRELESS:
534 if (rfkill2_count) {
535 hp_wmi_rfkill2_refresh();
536 break;
537 }
538
539 if (wifi_rfkill)
540 rfkill_set_states(wifi_rfkill,
541 hp_wmi_get_sw_state(HPWMI_WIFI),
542 hp_wmi_get_hw_state(HPWMI_WIFI));
543 if (bluetooth_rfkill)
544 rfkill_set_states(bluetooth_rfkill,
545 hp_wmi_get_sw_state(HPWMI_BLUETOOTH),
546 hp_wmi_get_hw_state(HPWMI_BLUETOOTH));
547 if (wwan_rfkill)
548 rfkill_set_states(wwan_rfkill,
549 hp_wmi_get_sw_state(HPWMI_WWAN),
550 hp_wmi_get_hw_state(HPWMI_WWAN));
551 break;
552 case HPWMI_CPU_BATTERY_THROTTLE:
553 printk(KERN_INFO PREFIX UNIMP "CPU throttle because of 3 Cell"
554 " battery event detected\n");
555 break;
556 case HPWMI_LOCK_SWITCH:
557 break;
558 default:
559 printk(KERN_INFO PREFIX "Unknown event_id - %d - 0x%x\n",
560 event_id, event_data);
561 break;
562 }
563 }
564
hp_wmi_input_setup(void)565 static int __init hp_wmi_input_setup(void)
566 {
567 acpi_status status;
568 int err;
569
570 hp_wmi_input_dev = input_allocate_device();
571 if (!hp_wmi_input_dev)
572 return -ENOMEM;
573
574 hp_wmi_input_dev->name = "HP WMI hotkeys";
575 hp_wmi_input_dev->phys = "wmi/input0";
576 hp_wmi_input_dev->id.bustype = BUS_HOST;
577
578 __set_bit(EV_SW, hp_wmi_input_dev->evbit);
579 __set_bit(SW_DOCK, hp_wmi_input_dev->swbit);
580 __set_bit(SW_TABLET_MODE, hp_wmi_input_dev->swbit);
581
582 err = sparse_keymap_setup(hp_wmi_input_dev, hp_wmi_keymap, NULL);
583 if (err)
584 goto err_free_dev;
585
586 /* Set initial hardware state */
587 input_report_switch(hp_wmi_input_dev, SW_DOCK, hp_wmi_dock_state());
588 input_report_switch(hp_wmi_input_dev, SW_TABLET_MODE,
589 hp_wmi_tablet_state());
590 input_sync(hp_wmi_input_dev);
591
592 status = wmi_install_notify_handler(HPWMI_EVENT_GUID, hp_wmi_notify, NULL);
593 if (ACPI_FAILURE(status)) {
594 err = -EIO;
595 goto err_free_keymap;
596 }
597
598 err = input_register_device(hp_wmi_input_dev);
599 if (err)
600 goto err_uninstall_notifier;
601
602 return 0;
603
604 err_uninstall_notifier:
605 wmi_remove_notify_handler(HPWMI_EVENT_GUID);
606 err_free_keymap:
607 sparse_keymap_free(hp_wmi_input_dev);
608 err_free_dev:
609 input_free_device(hp_wmi_input_dev);
610 return err;
611 }
612
hp_wmi_input_destroy(void)613 static void hp_wmi_input_destroy(void)
614 {
615 wmi_remove_notify_handler(HPWMI_EVENT_GUID);
616 sparse_keymap_free(hp_wmi_input_dev);
617 input_unregister_device(hp_wmi_input_dev);
618 }
619
cleanup_sysfs(struct platform_device * device)620 static void cleanup_sysfs(struct platform_device *device)
621 {
622 device_remove_file(&device->dev, &dev_attr_display);
623 device_remove_file(&device->dev, &dev_attr_hddtemp);
624 device_remove_file(&device->dev, &dev_attr_als);
625 device_remove_file(&device->dev, &dev_attr_dock);
626 device_remove_file(&device->dev, &dev_attr_tablet);
627 }
628
hp_wmi_rfkill_setup(struct platform_device * device)629 static int __devinit hp_wmi_rfkill_setup(struct platform_device *device)
630 {
631 int err;
632 int wireless = 0;
633
634 err = hp_wmi_perform_query(HPWMI_WIRELESS_QUERY, 0, &wireless,
635 sizeof(wireless), sizeof(wireless));
636 if (err)
637 return err;
638
639 if (wireless & 0x1) {
640 wifi_rfkill = rfkill_alloc("hp-wifi", &device->dev,
641 RFKILL_TYPE_WLAN,
642 &hp_wmi_rfkill_ops,
643 (void *) HPWMI_WIFI);
644 rfkill_init_sw_state(wifi_rfkill,
645 hp_wmi_get_sw_state(HPWMI_WIFI));
646 rfkill_set_hw_state(wifi_rfkill,
647 hp_wmi_get_hw_state(HPWMI_WIFI));
648 err = rfkill_register(wifi_rfkill);
649 if (err)
650 goto register_wifi_error;
651 }
652
653 if (wireless & 0x2) {
654 bluetooth_rfkill = rfkill_alloc("hp-bluetooth", &device->dev,
655 RFKILL_TYPE_BLUETOOTH,
656 &hp_wmi_rfkill_ops,
657 (void *) HPWMI_BLUETOOTH);
658 rfkill_init_sw_state(bluetooth_rfkill,
659 hp_wmi_get_sw_state(HPWMI_BLUETOOTH));
660 rfkill_set_hw_state(bluetooth_rfkill,
661 hp_wmi_get_hw_state(HPWMI_BLUETOOTH));
662 err = rfkill_register(bluetooth_rfkill);
663 if (err)
664 goto register_bluetooth_error;
665 }
666
667 if (wireless & 0x4) {
668 wwan_rfkill = rfkill_alloc("hp-wwan", &device->dev,
669 RFKILL_TYPE_WWAN,
670 &hp_wmi_rfkill_ops,
671 (void *) HPWMI_WWAN);
672 rfkill_init_sw_state(wwan_rfkill,
673 hp_wmi_get_sw_state(HPWMI_WWAN));
674 rfkill_set_hw_state(wwan_rfkill,
675 hp_wmi_get_hw_state(HPWMI_WWAN));
676 err = rfkill_register(wwan_rfkill);
677 if (err)
678 goto register_wwan_err;
679 }
680
681 return 0;
682 register_wwan_err:
683 rfkill_destroy(wwan_rfkill);
684 wwan_rfkill = NULL;
685 if (bluetooth_rfkill)
686 rfkill_unregister(bluetooth_rfkill);
687 register_bluetooth_error:
688 rfkill_destroy(bluetooth_rfkill);
689 bluetooth_rfkill = NULL;
690 if (wifi_rfkill)
691 rfkill_unregister(wifi_rfkill);
692 register_wifi_error:
693 rfkill_destroy(wifi_rfkill);
694 wifi_rfkill = NULL;
695 return err;
696 }
697
hp_wmi_rfkill2_setup(struct platform_device * device)698 static int __devinit hp_wmi_rfkill2_setup(struct platform_device *device)
699 {
700 int err, i;
701 struct bios_rfkill2_state state;
702 err = hp_wmi_perform_query(HPWMI_WIRELESS2_QUERY, 0, &state,
703 0, sizeof(state));
704 if (err)
705 return err;
706
707 if (state.count > HPWMI_MAX_RFKILL2_DEVICES) {
708 printk(KERN_WARNING PREFIX "unable to parse 0x1b query output\n");
709 return -EINVAL;
710 }
711
712 for (i = 0; i < state.count; i++) {
713 struct rfkill *rfkill;
714 enum rfkill_type type;
715 char *name;
716 switch (state.device[i].radio_type) {
717 case HPWMI_WIFI:
718 type = RFKILL_TYPE_WLAN;
719 name = "hp-wifi";
720 break;
721 case HPWMI_BLUETOOTH:
722 type = RFKILL_TYPE_BLUETOOTH;
723 name = "hp-bluetooth";
724 break;
725 case HPWMI_WWAN:
726 type = RFKILL_TYPE_WWAN;
727 name = "hp-wwan";
728 break;
729 default:
730 printk(KERN_WARNING PREFIX "unknown device type 0x%x\n",
731 state.device[i].radio_type);
732 continue;
733 }
734
735 if (!state.device[i].vendor_id) {
736 printk(KERN_WARNING PREFIX "zero device %d while %d "
737 "reported\n", i, state.count);
738 continue;
739 }
740
741 rfkill = rfkill_alloc(name, &device->dev, type,
742 &hp_wmi_rfkill2_ops, (void *)(long)i);
743 if (!rfkill) {
744 err = -ENOMEM;
745 goto fail;
746 }
747
748 rfkill2[rfkill2_count].id = state.device[i].rfkill_id;
749 rfkill2[rfkill2_count].num = i;
750 rfkill2[rfkill2_count].rfkill = rfkill;
751
752 rfkill_init_sw_state(rfkill,
753 IS_SWBLOCKED(state.device[i].power));
754 rfkill_set_hw_state(rfkill,
755 IS_HWBLOCKED(state.device[i].power));
756
757 if (!(state.device[i].power & HPWMI_POWER_BIOS))
758 printk(KERN_INFO PREFIX "device %s blocked by BIOS\n",
759 name);
760
761 err = rfkill_register(rfkill);
762 if (err) {
763 rfkill_destroy(rfkill);
764 goto fail;
765 }
766
767 rfkill2_count++;
768 }
769
770 return 0;
771 fail:
772 for (; rfkill2_count > 0; rfkill2_count--) {
773 rfkill_unregister(rfkill2[rfkill2_count - 1].rfkill);
774 rfkill_destroy(rfkill2[rfkill2_count - 1].rfkill);
775 }
776 return err;
777 }
778
hp_wmi_bios_setup(struct platform_device * device)779 static int __devinit hp_wmi_bios_setup(struct platform_device *device)
780 {
781 int err;
782
783 /* clear detected rfkill devices */
784 wifi_rfkill = NULL;
785 bluetooth_rfkill = NULL;
786 wwan_rfkill = NULL;
787 rfkill2_count = 0;
788
789 if (hp_wmi_rfkill_setup(device))
790 hp_wmi_rfkill2_setup(device);
791
792 err = device_create_file(&device->dev, &dev_attr_display);
793 if (err)
794 goto add_sysfs_error;
795 err = device_create_file(&device->dev, &dev_attr_hddtemp);
796 if (err)
797 goto add_sysfs_error;
798 err = device_create_file(&device->dev, &dev_attr_als);
799 if (err)
800 goto add_sysfs_error;
801 err = device_create_file(&device->dev, &dev_attr_dock);
802 if (err)
803 goto add_sysfs_error;
804 err = device_create_file(&device->dev, &dev_attr_tablet);
805 if (err)
806 goto add_sysfs_error;
807 return 0;
808
809 add_sysfs_error:
810 cleanup_sysfs(device);
811 return err;
812 }
813
hp_wmi_bios_remove(struct platform_device * device)814 static int __exit hp_wmi_bios_remove(struct platform_device *device)
815 {
816 int i;
817 cleanup_sysfs(device);
818
819 for (i = 0; i < rfkill2_count; i++) {
820 rfkill_unregister(rfkill2[i].rfkill);
821 rfkill_destroy(rfkill2[i].rfkill);
822 }
823
824 if (wifi_rfkill) {
825 rfkill_unregister(wifi_rfkill);
826 rfkill_destroy(wifi_rfkill);
827 }
828 if (bluetooth_rfkill) {
829 rfkill_unregister(bluetooth_rfkill);
830 rfkill_destroy(bluetooth_rfkill);
831 }
832 if (wwan_rfkill) {
833 rfkill_unregister(wwan_rfkill);
834 rfkill_destroy(wwan_rfkill);
835 }
836
837 return 0;
838 }
839
hp_wmi_resume_handler(struct device * device)840 static int hp_wmi_resume_handler(struct device *device)
841 {
842 /*
843 * Hardware state may have changed while suspended, so trigger
844 * input events for the current state. As this is a switch,
845 * the input layer will only actually pass it on if the state
846 * changed.
847 */
848 if (hp_wmi_input_dev) {
849 input_report_switch(hp_wmi_input_dev, SW_DOCK,
850 hp_wmi_dock_state());
851 input_report_switch(hp_wmi_input_dev, SW_TABLET_MODE,
852 hp_wmi_tablet_state());
853 input_sync(hp_wmi_input_dev);
854 }
855
856 if (rfkill2_count)
857 hp_wmi_rfkill2_refresh();
858
859 if (wifi_rfkill)
860 rfkill_set_states(wifi_rfkill,
861 hp_wmi_get_sw_state(HPWMI_WIFI),
862 hp_wmi_get_hw_state(HPWMI_WIFI));
863 if (bluetooth_rfkill)
864 rfkill_set_states(bluetooth_rfkill,
865 hp_wmi_get_sw_state(HPWMI_BLUETOOTH),
866 hp_wmi_get_hw_state(HPWMI_BLUETOOTH));
867 if (wwan_rfkill)
868 rfkill_set_states(wwan_rfkill,
869 hp_wmi_get_sw_state(HPWMI_WWAN),
870 hp_wmi_get_hw_state(HPWMI_WWAN));
871
872 return 0;
873 }
874
hp_wmi_init(void)875 static int __init hp_wmi_init(void)
876 {
877 int err;
878 int event_capable = wmi_has_guid(HPWMI_EVENT_GUID);
879 int bios_capable = wmi_has_guid(HPWMI_BIOS_GUID);
880
881 if (event_capable) {
882 err = hp_wmi_input_setup();
883 if (err)
884 return err;
885 }
886
887 if (bios_capable) {
888 err = platform_driver_register(&hp_wmi_driver);
889 if (err)
890 goto err_driver_reg;
891 hp_wmi_platform_dev = platform_device_alloc("hp-wmi", -1);
892 if (!hp_wmi_platform_dev) {
893 err = -ENOMEM;
894 goto err_device_alloc;
895 }
896 err = platform_device_add(hp_wmi_platform_dev);
897 if (err)
898 goto err_device_add;
899 }
900
901 if (!bios_capable && !event_capable)
902 return -ENODEV;
903
904 return 0;
905
906 err_device_add:
907 platform_device_put(hp_wmi_platform_dev);
908 err_device_alloc:
909 platform_driver_unregister(&hp_wmi_driver);
910 err_driver_reg:
911 if (event_capable)
912 hp_wmi_input_destroy();
913
914 return err;
915 }
916
hp_wmi_exit(void)917 static void __exit hp_wmi_exit(void)
918 {
919 if (wmi_has_guid(HPWMI_EVENT_GUID))
920 hp_wmi_input_destroy();
921
922 if (hp_wmi_platform_dev) {
923 platform_device_unregister(hp_wmi_platform_dev);
924 platform_driver_unregister(&hp_wmi_driver);
925 }
926 }
927
928 module_init(hp_wmi_init);
929 module_exit(hp_wmi_exit);
930