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Merge remote-tracking branches 'asoc/topic/wm8904', 'asoc/topic/wm8955' and 'asoc...
[mirror_ubuntu-zesty-kernel.git] / drivers / platform / x86 / hp-wmi.c
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_BIOS_QUERY 0x9
57 #define HPWMI_FEATURE_QUERY 0xb
58 #define HPWMI_HOTKEY_QUERY 0xc
59 #define HPWMI_FEATURE2_QUERY 0xd
60 #define HPWMI_WIRELESS2_QUERY 0x1b
61 #define HPWMI_POSTCODEERROR_QUERY 0x2a
62
63 enum hp_wmi_radio {
64 HPWMI_WIFI = 0,
65 HPWMI_BLUETOOTH = 1,
66 HPWMI_WWAN = 2,
67 HPWMI_GPS = 3,
68 };
69
70 enum hp_wmi_event_ids {
71 HPWMI_DOCK_EVENT = 1,
72 HPWMI_PARK_HDD = 2,
73 HPWMI_SMART_ADAPTER = 3,
74 HPWMI_BEZEL_BUTTON = 4,
75 HPWMI_WIRELESS = 5,
76 HPWMI_CPU_BATTERY_THROTTLE = 6,
77 HPWMI_LOCK_SWITCH = 7,
78 HPWMI_LID_SWITCH = 8,
79 HPWMI_SCREEN_ROTATION = 9,
80 HPWMI_COOLSENSE_SYSTEM_MOBILE = 0x0A,
81 HPWMI_COOLSENSE_SYSTEM_HOT = 0x0B,
82 HPWMI_PROXIMITY_SENSOR = 0x0C,
83 HPWMI_BACKLIT_KB_BRIGHTNESS = 0x0D,
84 HPWMI_PEAKSHIFT_PERIOD = 0x0F,
85 HPWMI_BATTERY_CHARGE_PERIOD = 0x10,
86 };
87
88 struct bios_args {
89 u32 signature;
90 u32 command;
91 u32 commandtype;
92 u32 datasize;
93 u32 data;
94 };
95
96 struct bios_return {
97 u32 sigpass;
98 u32 return_code;
99 };
100
101 enum hp_return_value {
102 HPWMI_RET_WRONG_SIGNATURE = 0x02,
103 HPWMI_RET_UNKNOWN_COMMAND = 0x03,
104 HPWMI_RET_UNKNOWN_CMDTYPE = 0x04,
105 HPWMI_RET_INVALID_PARAMETERS = 0x05,
106 };
107
108 enum hp_wireless2_bits {
109 HPWMI_POWER_STATE = 0x01,
110 HPWMI_POWER_SOFT = 0x02,
111 HPWMI_POWER_BIOS = 0x04,
112 HPWMI_POWER_HARD = 0x08,
113 };
114
115 #define IS_HWBLOCKED(x) ((x & (HPWMI_POWER_BIOS | HPWMI_POWER_HARD)) \
116 != (HPWMI_POWER_BIOS | HPWMI_POWER_HARD))
117 #define IS_SWBLOCKED(x) !(x & HPWMI_POWER_SOFT)
118
119 struct bios_rfkill2_device_state {
120 u8 radio_type;
121 u8 bus_type;
122 u16 vendor_id;
123 u16 product_id;
124 u16 subsys_vendor_id;
125 u16 subsys_product_id;
126 u8 rfkill_id;
127 u8 power;
128 u8 unknown[4];
129 };
130
131 /* 7 devices fit into the 128 byte buffer */
132 #define HPWMI_MAX_RFKILL2_DEVICES 7
133
134 struct bios_rfkill2_state {
135 u8 unknown[7];
136 u8 count;
137 u8 pad[8];
138 struct bios_rfkill2_device_state device[HPWMI_MAX_RFKILL2_DEVICES];
139 };
140
141 static const struct key_entry hp_wmi_keymap[] = {
142 { KE_KEY, 0x02, { KEY_BRIGHTNESSUP } },
143 { KE_KEY, 0x03, { KEY_BRIGHTNESSDOWN } },
144 { KE_KEY, 0x20e6, { KEY_PROG1 } },
145 { KE_KEY, 0x20e8, { KEY_MEDIA } },
146 { KE_KEY, 0x2142, { KEY_MEDIA } },
147 { KE_KEY, 0x213b, { KEY_INFO } },
148 { KE_KEY, 0x2169, { KEY_ROTATE_DISPLAY } },
149 { KE_KEY, 0x216a, { KEY_SETUP } },
150 { KE_KEY, 0x231b, { KEY_HELP } },
151 { KE_END, 0 }
152 };
153
154 static struct input_dev *hp_wmi_input_dev;
155 static struct platform_device *hp_wmi_platform_dev;
156
157 static struct rfkill *wifi_rfkill;
158 static struct rfkill *bluetooth_rfkill;
159 static struct rfkill *wwan_rfkill;
160 static struct rfkill *gps_rfkill;
161
162 struct rfkill2_device {
163 u8 id;
164 int num;
165 struct rfkill *rfkill;
166 };
167
168 static int rfkill2_count;
169 static struct rfkill2_device rfkill2[HPWMI_MAX_RFKILL2_DEVICES];
170
171 /*
172 * hp_wmi_perform_query
173 *
174 * query: The commandtype -> What should be queried
175 * write: The command -> 0 read, 1 write, 3 ODM specific
176 * buffer: Buffer used as input and/or output
177 * insize: Size of input buffer
178 * outsize: Size of output buffer
179 *
180 * returns zero on success
181 * an HP WMI query specific error code (which is positive)
182 * -EINVAL if the query was not successful at all
183 * -EINVAL if the output buffer size exceeds buffersize
184 *
185 * Note: The buffersize must at least be the maximum of the input and output
186 * size. E.g. Battery info query (0x7) is defined to have 1 byte input
187 * and 128 byte output. The caller would do:
188 * buffer = kzalloc(128, GFP_KERNEL);
189 * ret = hp_wmi_perform_query(0x7, 0, buffer, 1, 128)
190 */
191 static int hp_wmi_perform_query(int query, int write, void *buffer,
192 int insize, int outsize)
193 {
194 struct bios_return *bios_return;
195 int actual_outsize;
196 union acpi_object *obj;
197 struct bios_args args = {
198 .signature = 0x55434553,
199 .command = write ? 0x2 : 0x1,
200 .commandtype = query,
201 .datasize = insize,
202 .data = 0,
203 };
204 struct acpi_buffer input = { sizeof(struct bios_args), &args };
205 struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
206 u32 rc;
207
208 if (WARN_ON(insize > sizeof(args.data)))
209 return -EINVAL;
210 memcpy(&args.data, buffer, insize);
211
212 wmi_evaluate_method(HPWMI_BIOS_GUID, 0, 0x3, &input, &output);
213
214 obj = output.pointer;
215
216 if (!obj)
217 return -EINVAL;
218 else if (obj->type != ACPI_TYPE_BUFFER) {
219 kfree(obj);
220 return -EINVAL;
221 }
222
223 bios_return = (struct bios_return *)obj->buffer.pointer;
224 rc = bios_return->return_code;
225
226 if (rc) {
227 if (rc != HPWMI_RET_UNKNOWN_CMDTYPE)
228 pr_warn("query 0x%x returned error 0x%x\n", query, rc);
229 kfree(obj);
230 return rc;
231 }
232
233 if (!outsize) {
234 /* ignore output data */
235 kfree(obj);
236 return 0;
237 }
238
239 actual_outsize = min(outsize, (int)(obj->buffer.length - sizeof(*bios_return)));
240 memcpy(buffer, obj->buffer.pointer + sizeof(*bios_return), actual_outsize);
241 memset(buffer + actual_outsize, 0, outsize - actual_outsize);
242 kfree(obj);
243 return 0;
244 }
245
246 static int hp_wmi_display_state(void)
247 {
248 int state = 0;
249 int ret = hp_wmi_perform_query(HPWMI_DISPLAY_QUERY, 0, &state,
250 sizeof(state), sizeof(state));
251 if (ret)
252 return -EINVAL;
253 return state;
254 }
255
256 static int hp_wmi_hddtemp_state(void)
257 {
258 int state = 0;
259 int ret = hp_wmi_perform_query(HPWMI_HDDTEMP_QUERY, 0, &state,
260 sizeof(state), sizeof(state));
261 if (ret)
262 return -EINVAL;
263 return state;
264 }
265
266 static int hp_wmi_als_state(void)
267 {
268 int state = 0;
269 int ret = hp_wmi_perform_query(HPWMI_ALS_QUERY, 0, &state,
270 sizeof(state), sizeof(state));
271 if (ret)
272 return -EINVAL;
273 return state;
274 }
275
276 static int hp_wmi_dock_state(void)
277 {
278 int state = 0;
279 int ret = hp_wmi_perform_query(HPWMI_HARDWARE_QUERY, 0, &state,
280 sizeof(state), sizeof(state));
281
282 if (ret)
283 return -EINVAL;
284
285 return state & 0x1;
286 }
287
288 static int hp_wmi_tablet_state(void)
289 {
290 int state = 0;
291 int ret = hp_wmi_perform_query(HPWMI_HARDWARE_QUERY, 0, &state,
292 sizeof(state), sizeof(state));
293 if (ret)
294 return ret;
295
296 return (state & 0x4) ? 1 : 0;
297 }
298
299 static int __init hp_wmi_bios_2008_later(void)
300 {
301 int state = 0;
302 int ret = hp_wmi_perform_query(HPWMI_FEATURE_QUERY, 0, &state,
303 sizeof(state), sizeof(state));
304 if (!ret)
305 return 1;
306
307 return (ret == HPWMI_RET_UNKNOWN_CMDTYPE) ? 0 : -ENXIO;
308 }
309
310 static int __init hp_wmi_bios_2009_later(void)
311 {
312 int state = 0;
313 int ret = hp_wmi_perform_query(HPWMI_FEATURE2_QUERY, 0, &state,
314 sizeof(state), sizeof(state));
315 if (!ret)
316 return 1;
317
318 return (ret == HPWMI_RET_UNKNOWN_CMDTYPE) ? 0 : -ENXIO;
319 }
320
321 static int __init hp_wmi_enable_hotkeys(void)
322 {
323 int value = 0x6e;
324 int ret = hp_wmi_perform_query(HPWMI_BIOS_QUERY, 1, &value,
325 sizeof(value), 0);
326 if (ret)
327 return -EINVAL;
328 return 0;
329 }
330
331 static int hp_wmi_set_block(void *data, bool blocked)
332 {
333 enum hp_wmi_radio r = (enum hp_wmi_radio) data;
334 int query = BIT(r + 8) | ((!blocked) << r);
335 int ret;
336
337 ret = hp_wmi_perform_query(HPWMI_WIRELESS_QUERY, 1,
338 &query, sizeof(query), 0);
339 if (ret)
340 return -EINVAL;
341 return 0;
342 }
343
344 static const struct rfkill_ops hp_wmi_rfkill_ops = {
345 .set_block = hp_wmi_set_block,
346 };
347
348 static bool hp_wmi_get_sw_state(enum hp_wmi_radio r)
349 {
350 int wireless = 0;
351 int mask;
352 hp_wmi_perform_query(HPWMI_WIRELESS_QUERY, 0,
353 &wireless, sizeof(wireless),
354 sizeof(wireless));
355 /* TBD: Pass error */
356
357 mask = 0x200 << (r * 8);
358
359 if (wireless & mask)
360 return false;
361 else
362 return true;
363 }
364
365 static bool hp_wmi_get_hw_state(enum hp_wmi_radio r)
366 {
367 int wireless = 0;
368 int mask;
369 hp_wmi_perform_query(HPWMI_WIRELESS_QUERY, 0,
370 &wireless, sizeof(wireless),
371 sizeof(wireless));
372 /* TBD: Pass error */
373
374 mask = 0x800 << (r * 8);
375
376 if (wireless & mask)
377 return false;
378 else
379 return true;
380 }
381
382 static int hp_wmi_rfkill2_set_block(void *data, bool blocked)
383 {
384 int rfkill_id = (int)(long)data;
385 char buffer[4] = { 0x01, 0x00, rfkill_id, !blocked };
386
387 if (hp_wmi_perform_query(HPWMI_WIRELESS2_QUERY, 1,
388 buffer, sizeof(buffer), 0))
389 return -EINVAL;
390 return 0;
391 }
392
393 static const struct rfkill_ops hp_wmi_rfkill2_ops = {
394 .set_block = hp_wmi_rfkill2_set_block,
395 };
396
397 static int hp_wmi_rfkill2_refresh(void)
398 {
399 int err, i;
400 struct bios_rfkill2_state state;
401
402 err = hp_wmi_perform_query(HPWMI_WIRELESS2_QUERY, 0, &state,
403 0, sizeof(state));
404 if (err)
405 return err;
406
407 for (i = 0; i < rfkill2_count; i++) {
408 int num = rfkill2[i].num;
409 struct bios_rfkill2_device_state *devstate;
410 devstate = &state.device[num];
411
412 if (num >= state.count ||
413 devstate->rfkill_id != rfkill2[i].id) {
414 pr_warn("power configuration of the wireless devices unexpectedly changed\n");
415 continue;
416 }
417
418 rfkill_set_states(rfkill2[i].rfkill,
419 IS_SWBLOCKED(devstate->power),
420 IS_HWBLOCKED(devstate->power));
421 }
422
423 return 0;
424 }
425
426 static int hp_wmi_post_code_state(void)
427 {
428 int state = 0;
429 int ret = hp_wmi_perform_query(HPWMI_POSTCODEERROR_QUERY, 0, &state,
430 sizeof(state), sizeof(state));
431 if (ret)
432 return -EINVAL;
433 return state;
434 }
435
436 static ssize_t show_display(struct device *dev, struct device_attribute *attr,
437 char *buf)
438 {
439 int value = hp_wmi_display_state();
440 if (value < 0)
441 return -EINVAL;
442 return sprintf(buf, "%d\n", value);
443 }
444
445 static ssize_t show_hddtemp(struct device *dev, struct device_attribute *attr,
446 char *buf)
447 {
448 int value = hp_wmi_hddtemp_state();
449 if (value < 0)
450 return -EINVAL;
451 return sprintf(buf, "%d\n", value);
452 }
453
454 static ssize_t show_als(struct device *dev, struct device_attribute *attr,
455 char *buf)
456 {
457 int value = hp_wmi_als_state();
458 if (value < 0)
459 return -EINVAL;
460 return sprintf(buf, "%d\n", value);
461 }
462
463 static ssize_t show_dock(struct device *dev, struct device_attribute *attr,
464 char *buf)
465 {
466 int value = hp_wmi_dock_state();
467 if (value < 0)
468 return -EINVAL;
469 return sprintf(buf, "%d\n", value);
470 }
471
472 static ssize_t show_tablet(struct device *dev, struct device_attribute *attr,
473 char *buf)
474 {
475 int value = hp_wmi_tablet_state();
476 if (value < 0)
477 return -EINVAL;
478 return sprintf(buf, "%d\n", value);
479 }
480
481 static ssize_t show_postcode(struct device *dev, struct device_attribute *attr,
482 char *buf)
483 {
484 /* Get the POST error code of previous boot failure. */
485 int value = hp_wmi_post_code_state();
486 if (value < 0)
487 return -EINVAL;
488 return sprintf(buf, "0x%x\n", value);
489 }
490
491 static ssize_t set_als(struct device *dev, struct device_attribute *attr,
492 const char *buf, size_t count)
493 {
494 u32 tmp = simple_strtoul(buf, NULL, 10);
495 int ret = hp_wmi_perform_query(HPWMI_ALS_QUERY, 1, &tmp,
496 sizeof(tmp), sizeof(tmp));
497 if (ret)
498 return -EINVAL;
499
500 return count;
501 }
502
503 static ssize_t set_postcode(struct device *dev, struct device_attribute *attr,
504 const char *buf, size_t count)
505 {
506 int ret;
507 u32 tmp;
508 long unsigned int tmp2;
509
510 ret = kstrtoul(buf, 10, &tmp2);
511 if (ret || tmp2 != 1)
512 return -EINVAL;
513
514 /* Clear the POST error code. It is kept until until cleared. */
515 tmp = (u32) tmp2;
516 ret = hp_wmi_perform_query(HPWMI_POSTCODEERROR_QUERY, 1, &tmp,
517 sizeof(tmp), sizeof(tmp));
518 if (ret)
519 return -EINVAL;
520
521 return count;
522 }
523
524 static DEVICE_ATTR(display, S_IRUGO, show_display, NULL);
525 static DEVICE_ATTR(hddtemp, S_IRUGO, show_hddtemp, NULL);
526 static DEVICE_ATTR(als, S_IRUGO | S_IWUSR, show_als, set_als);
527 static DEVICE_ATTR(dock, S_IRUGO, show_dock, NULL);
528 static DEVICE_ATTR(tablet, S_IRUGO, show_tablet, NULL);
529 static DEVICE_ATTR(postcode, S_IRUGO | S_IWUSR, show_postcode, set_postcode);
530
531 static void hp_wmi_notify(u32 value, void *context)
532 {
533 struct acpi_buffer response = { ACPI_ALLOCATE_BUFFER, NULL };
534 union acpi_object *obj;
535 u32 event_id, event_data;
536 int key_code = 0, ret;
537 u32 *location;
538 acpi_status status;
539
540 status = wmi_get_event_data(value, &response);
541 if (status != AE_OK) {
542 pr_info("bad event status 0x%x\n", status);
543 return;
544 }
545
546 obj = (union acpi_object *)response.pointer;
547
548 if (!obj)
549 return;
550 if (obj->type != ACPI_TYPE_BUFFER) {
551 pr_info("Unknown response received %d\n", obj->type);
552 kfree(obj);
553 return;
554 }
555
556 /*
557 * Depending on ACPI version the concatenation of id and event data
558 * inside _WED function will result in a 8 or 16 byte buffer.
559 */
560 location = (u32 *)obj->buffer.pointer;
561 if (obj->buffer.length == 8) {
562 event_id = *location;
563 event_data = *(location + 1);
564 } else if (obj->buffer.length == 16) {
565 event_id = *location;
566 event_data = *(location + 2);
567 } else {
568 pr_info("Unknown buffer length %d\n", obj->buffer.length);
569 kfree(obj);
570 return;
571 }
572 kfree(obj);
573
574 switch (event_id) {
575 case HPWMI_DOCK_EVENT:
576 input_report_switch(hp_wmi_input_dev, SW_DOCK,
577 hp_wmi_dock_state());
578 input_report_switch(hp_wmi_input_dev, SW_TABLET_MODE,
579 hp_wmi_tablet_state());
580 input_sync(hp_wmi_input_dev);
581 break;
582 case HPWMI_PARK_HDD:
583 break;
584 case HPWMI_SMART_ADAPTER:
585 break;
586 case HPWMI_BEZEL_BUTTON:
587 ret = hp_wmi_perform_query(HPWMI_HOTKEY_QUERY, 0,
588 &key_code,
589 sizeof(key_code),
590 sizeof(key_code));
591 if (ret)
592 break;
593
594 if (!sparse_keymap_report_event(hp_wmi_input_dev,
595 key_code, 1, true))
596 pr_info("Unknown key code - 0x%x\n", key_code);
597 break;
598 case HPWMI_WIRELESS:
599 if (rfkill2_count) {
600 hp_wmi_rfkill2_refresh();
601 break;
602 }
603
604 if (wifi_rfkill)
605 rfkill_set_states(wifi_rfkill,
606 hp_wmi_get_sw_state(HPWMI_WIFI),
607 hp_wmi_get_hw_state(HPWMI_WIFI));
608 if (bluetooth_rfkill)
609 rfkill_set_states(bluetooth_rfkill,
610 hp_wmi_get_sw_state(HPWMI_BLUETOOTH),
611 hp_wmi_get_hw_state(HPWMI_BLUETOOTH));
612 if (wwan_rfkill)
613 rfkill_set_states(wwan_rfkill,
614 hp_wmi_get_sw_state(HPWMI_WWAN),
615 hp_wmi_get_hw_state(HPWMI_WWAN));
616 if (gps_rfkill)
617 rfkill_set_states(gps_rfkill,
618 hp_wmi_get_sw_state(HPWMI_GPS),
619 hp_wmi_get_hw_state(HPWMI_GPS));
620 break;
621 case HPWMI_CPU_BATTERY_THROTTLE:
622 pr_info("Unimplemented CPU throttle because of 3 Cell battery event detected\n");
623 break;
624 case HPWMI_LOCK_SWITCH:
625 break;
626 case HPWMI_LID_SWITCH:
627 break;
628 case HPWMI_SCREEN_ROTATION:
629 break;
630 case HPWMI_COOLSENSE_SYSTEM_MOBILE:
631 break;
632 case HPWMI_COOLSENSE_SYSTEM_HOT:
633 break;
634 case HPWMI_PROXIMITY_SENSOR:
635 break;
636 case HPWMI_BACKLIT_KB_BRIGHTNESS:
637 break;
638 case HPWMI_PEAKSHIFT_PERIOD:
639 break;
640 case HPWMI_BATTERY_CHARGE_PERIOD:
641 break;
642 default:
643 pr_info("Unknown event_id - %d - 0x%x\n", event_id, event_data);
644 break;
645 }
646 }
647
648 static int __init hp_wmi_input_setup(void)
649 {
650 acpi_status status;
651 int err;
652
653 hp_wmi_input_dev = input_allocate_device();
654 if (!hp_wmi_input_dev)
655 return -ENOMEM;
656
657 hp_wmi_input_dev->name = "HP WMI hotkeys";
658 hp_wmi_input_dev->phys = "wmi/input0";
659 hp_wmi_input_dev->id.bustype = BUS_HOST;
660
661 __set_bit(EV_SW, hp_wmi_input_dev->evbit);
662 __set_bit(SW_DOCK, hp_wmi_input_dev->swbit);
663 __set_bit(SW_TABLET_MODE, hp_wmi_input_dev->swbit);
664
665 err = sparse_keymap_setup(hp_wmi_input_dev, hp_wmi_keymap, NULL);
666 if (err)
667 goto err_free_dev;
668
669 /* Set initial hardware state */
670 input_report_switch(hp_wmi_input_dev, SW_DOCK, hp_wmi_dock_state());
671 input_report_switch(hp_wmi_input_dev, SW_TABLET_MODE,
672 hp_wmi_tablet_state());
673 input_sync(hp_wmi_input_dev);
674
675 if (!hp_wmi_bios_2009_later() && hp_wmi_bios_2008_later())
676 hp_wmi_enable_hotkeys();
677
678 status = wmi_install_notify_handler(HPWMI_EVENT_GUID, hp_wmi_notify, NULL);
679 if (ACPI_FAILURE(status)) {
680 err = -EIO;
681 goto err_free_keymap;
682 }
683
684 err = input_register_device(hp_wmi_input_dev);
685 if (err)
686 goto err_uninstall_notifier;
687
688 return 0;
689
690 err_uninstall_notifier:
691 wmi_remove_notify_handler(HPWMI_EVENT_GUID);
692 err_free_keymap:
693 sparse_keymap_free(hp_wmi_input_dev);
694 err_free_dev:
695 input_free_device(hp_wmi_input_dev);
696 return err;
697 }
698
699 static void hp_wmi_input_destroy(void)
700 {
701 wmi_remove_notify_handler(HPWMI_EVENT_GUID);
702 sparse_keymap_free(hp_wmi_input_dev);
703 input_unregister_device(hp_wmi_input_dev);
704 }
705
706 static void cleanup_sysfs(struct platform_device *device)
707 {
708 device_remove_file(&device->dev, &dev_attr_display);
709 device_remove_file(&device->dev, &dev_attr_hddtemp);
710 device_remove_file(&device->dev, &dev_attr_als);
711 device_remove_file(&device->dev, &dev_attr_dock);
712 device_remove_file(&device->dev, &dev_attr_tablet);
713 device_remove_file(&device->dev, &dev_attr_postcode);
714 }
715
716 static int __init hp_wmi_rfkill_setup(struct platform_device *device)
717 {
718 int err;
719 int wireless = 0;
720
721 err = hp_wmi_perform_query(HPWMI_WIRELESS_QUERY, 0, &wireless,
722 sizeof(wireless), sizeof(wireless));
723 if (err)
724 return err;
725
726 if (wireless & 0x1) {
727 wifi_rfkill = rfkill_alloc("hp-wifi", &device->dev,
728 RFKILL_TYPE_WLAN,
729 &hp_wmi_rfkill_ops,
730 (void *) HPWMI_WIFI);
731 if (!wifi_rfkill)
732 return -ENOMEM;
733 rfkill_init_sw_state(wifi_rfkill,
734 hp_wmi_get_sw_state(HPWMI_WIFI));
735 rfkill_set_hw_state(wifi_rfkill,
736 hp_wmi_get_hw_state(HPWMI_WIFI));
737 err = rfkill_register(wifi_rfkill);
738 if (err)
739 goto register_wifi_error;
740 }
741
742 if (wireless & 0x2) {
743 bluetooth_rfkill = rfkill_alloc("hp-bluetooth", &device->dev,
744 RFKILL_TYPE_BLUETOOTH,
745 &hp_wmi_rfkill_ops,
746 (void *) HPWMI_BLUETOOTH);
747 if (!bluetooth_rfkill) {
748 err = -ENOMEM;
749 goto register_wifi_error;
750 }
751 rfkill_init_sw_state(bluetooth_rfkill,
752 hp_wmi_get_sw_state(HPWMI_BLUETOOTH));
753 rfkill_set_hw_state(bluetooth_rfkill,
754 hp_wmi_get_hw_state(HPWMI_BLUETOOTH));
755 err = rfkill_register(bluetooth_rfkill);
756 if (err)
757 goto register_bluetooth_error;
758 }
759
760 if (wireless & 0x4) {
761 wwan_rfkill = rfkill_alloc("hp-wwan", &device->dev,
762 RFKILL_TYPE_WWAN,
763 &hp_wmi_rfkill_ops,
764 (void *) HPWMI_WWAN);
765 if (!wwan_rfkill) {
766 err = -ENOMEM;
767 goto register_bluetooth_error;
768 }
769 rfkill_init_sw_state(wwan_rfkill,
770 hp_wmi_get_sw_state(HPWMI_WWAN));
771 rfkill_set_hw_state(wwan_rfkill,
772 hp_wmi_get_hw_state(HPWMI_WWAN));
773 err = rfkill_register(wwan_rfkill);
774 if (err)
775 goto register_wwan_error;
776 }
777
778 if (wireless & 0x8) {
779 gps_rfkill = rfkill_alloc("hp-gps", &device->dev,
780 RFKILL_TYPE_GPS,
781 &hp_wmi_rfkill_ops,
782 (void *) HPWMI_GPS);
783 if (!gps_rfkill) {
784 err = -ENOMEM;
785 goto register_wwan_error;
786 }
787 rfkill_init_sw_state(gps_rfkill,
788 hp_wmi_get_sw_state(HPWMI_GPS));
789 rfkill_set_hw_state(gps_rfkill,
790 hp_wmi_get_hw_state(HPWMI_GPS));
791 err = rfkill_register(gps_rfkill);
792 if (err)
793 goto register_gps_error;
794 }
795
796 return 0;
797 register_gps_error:
798 rfkill_destroy(gps_rfkill);
799 gps_rfkill = NULL;
800 if (bluetooth_rfkill)
801 rfkill_unregister(bluetooth_rfkill);
802 register_wwan_error:
803 rfkill_destroy(wwan_rfkill);
804 wwan_rfkill = NULL;
805 if (gps_rfkill)
806 rfkill_unregister(gps_rfkill);
807 register_bluetooth_error:
808 rfkill_destroy(bluetooth_rfkill);
809 bluetooth_rfkill = NULL;
810 if (wifi_rfkill)
811 rfkill_unregister(wifi_rfkill);
812 register_wifi_error:
813 rfkill_destroy(wifi_rfkill);
814 wifi_rfkill = NULL;
815 return err;
816 }
817
818 static int __init hp_wmi_rfkill2_setup(struct platform_device *device)
819 {
820 int err, i;
821 struct bios_rfkill2_state state;
822 err = hp_wmi_perform_query(HPWMI_WIRELESS2_QUERY, 0, &state,
823 0, sizeof(state));
824 if (err)
825 return err;
826
827 if (state.count > HPWMI_MAX_RFKILL2_DEVICES) {
828 pr_warn("unable to parse 0x1b query output\n");
829 return -EINVAL;
830 }
831
832 for (i = 0; i < state.count; i++) {
833 struct rfkill *rfkill;
834 enum rfkill_type type;
835 char *name;
836 switch (state.device[i].radio_type) {
837 case HPWMI_WIFI:
838 type = RFKILL_TYPE_WLAN;
839 name = "hp-wifi";
840 break;
841 case HPWMI_BLUETOOTH:
842 type = RFKILL_TYPE_BLUETOOTH;
843 name = "hp-bluetooth";
844 break;
845 case HPWMI_WWAN:
846 type = RFKILL_TYPE_WWAN;
847 name = "hp-wwan";
848 break;
849 case HPWMI_GPS:
850 type = RFKILL_TYPE_GPS;
851 name = "hp-gps";
852 break;
853 default:
854 pr_warn("unknown device type 0x%x\n",
855 state.device[i].radio_type);
856 continue;
857 }
858
859 if (!state.device[i].vendor_id) {
860 pr_warn("zero device %d while %d reported\n",
861 i, state.count);
862 continue;
863 }
864
865 rfkill = rfkill_alloc(name, &device->dev, type,
866 &hp_wmi_rfkill2_ops, (void *)(long)i);
867 if (!rfkill) {
868 err = -ENOMEM;
869 goto fail;
870 }
871
872 rfkill2[rfkill2_count].id = state.device[i].rfkill_id;
873 rfkill2[rfkill2_count].num = i;
874 rfkill2[rfkill2_count].rfkill = rfkill;
875
876 rfkill_init_sw_state(rfkill,
877 IS_SWBLOCKED(state.device[i].power));
878 rfkill_set_hw_state(rfkill,
879 IS_HWBLOCKED(state.device[i].power));
880
881 if (!(state.device[i].power & HPWMI_POWER_BIOS))
882 pr_info("device %s blocked by BIOS\n", name);
883
884 err = rfkill_register(rfkill);
885 if (err) {
886 rfkill_destroy(rfkill);
887 goto fail;
888 }
889
890 rfkill2_count++;
891 }
892
893 return 0;
894 fail:
895 for (; rfkill2_count > 0; rfkill2_count--) {
896 rfkill_unregister(rfkill2[rfkill2_count - 1].rfkill);
897 rfkill_destroy(rfkill2[rfkill2_count - 1].rfkill);
898 }
899 return err;
900 }
901
902 static int __init hp_wmi_bios_setup(struct platform_device *device)
903 {
904 int err;
905
906 /* clear detected rfkill devices */
907 wifi_rfkill = NULL;
908 bluetooth_rfkill = NULL;
909 wwan_rfkill = NULL;
910 gps_rfkill = NULL;
911 rfkill2_count = 0;
912
913 if (hp_wmi_bios_2009_later() || hp_wmi_rfkill_setup(device))
914 hp_wmi_rfkill2_setup(device);
915
916 err = device_create_file(&device->dev, &dev_attr_display);
917 if (err)
918 goto add_sysfs_error;
919 err = device_create_file(&device->dev, &dev_attr_hddtemp);
920 if (err)
921 goto add_sysfs_error;
922 err = device_create_file(&device->dev, &dev_attr_als);
923 if (err)
924 goto add_sysfs_error;
925 err = device_create_file(&device->dev, &dev_attr_dock);
926 if (err)
927 goto add_sysfs_error;
928 err = device_create_file(&device->dev, &dev_attr_tablet);
929 if (err)
930 goto add_sysfs_error;
931 err = device_create_file(&device->dev, &dev_attr_postcode);
932 if (err)
933 goto add_sysfs_error;
934 return 0;
935
936 add_sysfs_error:
937 cleanup_sysfs(device);
938 return err;
939 }
940
941 static int __exit hp_wmi_bios_remove(struct platform_device *device)
942 {
943 int i;
944 cleanup_sysfs(device);
945
946 for (i = 0; i < rfkill2_count; i++) {
947 rfkill_unregister(rfkill2[i].rfkill);
948 rfkill_destroy(rfkill2[i].rfkill);
949 }
950
951 if (wifi_rfkill) {
952 rfkill_unregister(wifi_rfkill);
953 rfkill_destroy(wifi_rfkill);
954 }
955 if (bluetooth_rfkill) {
956 rfkill_unregister(bluetooth_rfkill);
957 rfkill_destroy(bluetooth_rfkill);
958 }
959 if (wwan_rfkill) {
960 rfkill_unregister(wwan_rfkill);
961 rfkill_destroy(wwan_rfkill);
962 }
963 if (gps_rfkill) {
964 rfkill_unregister(gps_rfkill);
965 rfkill_destroy(gps_rfkill);
966 }
967
968 return 0;
969 }
970
971 static int hp_wmi_resume_handler(struct device *device)
972 {
973 /*
974 * Hardware state may have changed while suspended, so trigger
975 * input events for the current state. As this is a switch,
976 * the input layer will only actually pass it on if the state
977 * changed.
978 */
979 if (hp_wmi_input_dev) {
980 input_report_switch(hp_wmi_input_dev, SW_DOCK,
981 hp_wmi_dock_state());
982 input_report_switch(hp_wmi_input_dev, SW_TABLET_MODE,
983 hp_wmi_tablet_state());
984 input_sync(hp_wmi_input_dev);
985 }
986
987 if (rfkill2_count)
988 hp_wmi_rfkill2_refresh();
989
990 if (wifi_rfkill)
991 rfkill_set_states(wifi_rfkill,
992 hp_wmi_get_sw_state(HPWMI_WIFI),
993 hp_wmi_get_hw_state(HPWMI_WIFI));
994 if (bluetooth_rfkill)
995 rfkill_set_states(bluetooth_rfkill,
996 hp_wmi_get_sw_state(HPWMI_BLUETOOTH),
997 hp_wmi_get_hw_state(HPWMI_BLUETOOTH));
998 if (wwan_rfkill)
999 rfkill_set_states(wwan_rfkill,
1000 hp_wmi_get_sw_state(HPWMI_WWAN),
1001 hp_wmi_get_hw_state(HPWMI_WWAN));
1002 if (gps_rfkill)
1003 rfkill_set_states(gps_rfkill,
1004 hp_wmi_get_sw_state(HPWMI_GPS),
1005 hp_wmi_get_hw_state(HPWMI_GPS));
1006
1007 return 0;
1008 }
1009
1010 static const struct dev_pm_ops hp_wmi_pm_ops = {
1011 .resume = hp_wmi_resume_handler,
1012 .restore = hp_wmi_resume_handler,
1013 };
1014
1015 static struct platform_driver hp_wmi_driver = {
1016 .driver = {
1017 .name = "hp-wmi",
1018 .pm = &hp_wmi_pm_ops,
1019 },
1020 .remove = __exit_p(hp_wmi_bios_remove),
1021 };
1022
1023 static int __init hp_wmi_init(void)
1024 {
1025 int err;
1026 int event_capable = wmi_has_guid(HPWMI_EVENT_GUID);
1027 int bios_capable = wmi_has_guid(HPWMI_BIOS_GUID);
1028
1029 if (!bios_capable && !event_capable)
1030 return -ENODEV;
1031
1032 if (event_capable) {
1033 err = hp_wmi_input_setup();
1034 if (err)
1035 return err;
1036 }
1037
1038 if (bios_capable) {
1039 hp_wmi_platform_dev =
1040 platform_device_register_simple("hp-wmi", -1, NULL, 0);
1041 if (IS_ERR(hp_wmi_platform_dev)) {
1042 err = PTR_ERR(hp_wmi_platform_dev);
1043 goto err_destroy_input;
1044 }
1045
1046 err = platform_driver_probe(&hp_wmi_driver, hp_wmi_bios_setup);
1047 if (err)
1048 goto err_unregister_device;
1049 }
1050
1051 return 0;
1052
1053 err_unregister_device:
1054 platform_device_unregister(hp_wmi_platform_dev);
1055 err_destroy_input:
1056 if (event_capable)
1057 hp_wmi_input_destroy();
1058
1059 return err;
1060 }
1061 module_init(hp_wmi_init);
1062
1063 static void __exit hp_wmi_exit(void)
1064 {
1065 if (wmi_has_guid(HPWMI_EVENT_GUID))
1066 hp_wmi_input_destroy();
1067
1068 if (hp_wmi_platform_dev) {
1069 platform_device_unregister(hp_wmi_platform_dev);
1070 platform_driver_unregister(&hp_wmi_driver);
1071 }
1072 }
1073 module_exit(hp_wmi_exit);
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