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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
41MODULE_AUTHOR("Matthew Garrett <mjg59@srcf.ucam.org>");
42MODULE_DESCRIPTION("HP laptop WMI hotkeys driver");
43MODULE_LICENSE("GPL");
44
45MODULE_ALIAS("wmi:95F24279-4D7B-4334-9387-ACCDC67EF61C");
46MODULE_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
63enum hp_wmi_radio {
64 HPWMI_WIFI = 0,
65 HPWMI_BLUETOOTH = 1,
66 HPWMI_WWAN = 2,
67 HPWMI_GPS = 3,
68};
69
70enum 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
88struct bios_args {
89 u32 signature;
90 u32 command;
91 u32 commandtype;
92 u32 datasize;
93 u32 data;
94};
95
96struct bios_return {
97 u32 sigpass;
98 u32 return_code;
99};
100
101enum 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
108enum 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
119struct 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
134struct 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
141static 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
154static struct input_dev *hp_wmi_input_dev;
155static struct platform_device *hp_wmi_platform_dev;
156
157static struct rfkill *wifi_rfkill;
158static struct rfkill *bluetooth_rfkill;
159static struct rfkill *wwan_rfkill;
160
161struct rfkill2_device {
162 u8 id;
163 int num;
164 struct rfkill *rfkill;
165};
166
167static int rfkill2_count;
168static struct rfkill2_device rfkill2[HPWMI_MAX_RFKILL2_DEVICES];
169
170/*
171 * hp_wmi_perform_query
172 *
173 * query: The commandtype -> What should be queried
174 * write: The command -> 0 read, 1 write, 3 ODM specific
175 * buffer: Buffer used as input and/or output
176 * insize: Size of input buffer
177 * outsize: Size of output buffer
178 *
179 * returns zero on success
180 * an HP WMI query specific error code (which is positive)
181 * -EINVAL if the query was not successful at all
182 * -EINVAL if the output buffer size exceeds buffersize
183 *
184 * Note: The buffersize must at least be the maximum of the input and output
185 * size. E.g. Battery info query (0x7) is defined to have 1 byte input
186 * and 128 byte output. The caller would do:
187 * buffer = kzalloc(128, GFP_KERNEL);
188 * ret = hp_wmi_perform_query(0x7, 0, buffer, 1, 128)
189 */
190static int hp_wmi_perform_query(int query, int write, void *buffer,
191 int insize, int outsize)
192{
193 struct bios_return *bios_return;
194 int actual_outsize;
195 union acpi_object *obj;
196 struct bios_args args = {
197 .signature = 0x55434553,
198 .command = write ? 0x2 : 0x1,
199 .commandtype = query,
200 .datasize = insize,
201 .data = 0,
202 };
203 struct acpi_buffer input = { sizeof(struct bios_args), &args };
204 struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
205 u32 rc;
206
207 if (WARN_ON(insize > sizeof(args.data)))
208 return -EINVAL;
209 memcpy(&args.data, buffer, insize);
210
211 wmi_evaluate_method(HPWMI_BIOS_GUID, 0, 0x3, &input, &output);
212
213 obj = output.pointer;
214
215 if (!obj)
216 return -EINVAL;
217 else if (obj->type != ACPI_TYPE_BUFFER) {
218 kfree(obj);
219 return -EINVAL;
220 }
221
222 bios_return = (struct bios_return *)obj->buffer.pointer;
223 rc = bios_return->return_code;
224
225 if (rc) {
226 if (rc != HPWMI_RET_UNKNOWN_CMDTYPE)
227 pr_warn("query 0x%x returned error 0x%x\n", query, rc);
228 kfree(obj);
229 return rc;
230 }
231
232 if (!outsize) {
233 /* ignore output data */
234 kfree(obj);
235 return 0;
236 }
237
238 actual_outsize = min(outsize, (int)(obj->buffer.length - sizeof(*bios_return)));
239 memcpy(buffer, obj->buffer.pointer + sizeof(*bios_return), actual_outsize);
240 memset(buffer + actual_outsize, 0, outsize - actual_outsize);
241 kfree(obj);
242 return 0;
243}
244
245static int hp_wmi_display_state(void)
246{
247 int state = 0;
248 int ret = hp_wmi_perform_query(HPWMI_DISPLAY_QUERY, 0, &state,
249 sizeof(state), sizeof(state));
250 if (ret)
251 return -EINVAL;
252 return state;
253}
254
255static int hp_wmi_hddtemp_state(void)
256{
257 int state = 0;
258 int ret = hp_wmi_perform_query(HPWMI_HDDTEMP_QUERY, 0, &state,
259 sizeof(state), sizeof(state));
260 if (ret)
261 return -EINVAL;
262 return state;
263}
264
265static int hp_wmi_als_state(void)
266{
267 int state = 0;
268 int ret = hp_wmi_perform_query(HPWMI_ALS_QUERY, 0, &state,
269 sizeof(state), sizeof(state));
270 if (ret)
271 return -EINVAL;
272 return state;
273}
274
275static int hp_wmi_dock_state(void)
276{
277 int state = 0;
278 int ret = hp_wmi_perform_query(HPWMI_HARDWARE_QUERY, 0, &state,
279 sizeof(state), sizeof(state));
280
281 if (ret)
282 return -EINVAL;
283
284 return state & 0x1;
285}
286
287static int hp_wmi_tablet_state(void)
288{
289 int state = 0;
290 int ret = hp_wmi_perform_query(HPWMI_HARDWARE_QUERY, 0, &state,
291 sizeof(state), sizeof(state));
292 if (ret)
293 return ret;
294
295 return (state & 0x4) ? 1 : 0;
296}
297
298static int __init hp_wmi_bios_2008_later(void)
299{
300 int state = 0;
301 int ret = hp_wmi_perform_query(HPWMI_FEATURE_QUERY, 0, &state,
302 sizeof(state), sizeof(state));
303 if (!ret)
304 return 1;
305
306 return (ret == HPWMI_RET_UNKNOWN_CMDTYPE) ? 0 : -ENXIO;
307}
308
309static int __init hp_wmi_bios_2009_later(void)
310{
311 int state = 0;
312 int ret = hp_wmi_perform_query(HPWMI_FEATURE2_QUERY, 0, &state,
313 sizeof(state), sizeof(state));
314 if (!ret)
315 return 1;
316
317 return (ret == HPWMI_RET_UNKNOWN_CMDTYPE) ? 0 : -ENXIO;
318}
319
320static int __init hp_wmi_enable_hotkeys(void)
321{
322 int value = 0x6e;
323 int ret = hp_wmi_perform_query(HPWMI_BIOS_QUERY, 1, &value,
324 sizeof(value), 0);
325 if (ret)
326 return -EINVAL;
327 return 0;
328}
329
330static int hp_wmi_set_block(void *data, bool blocked)
331{
332 enum hp_wmi_radio r = (enum hp_wmi_radio) data;
333 int query = BIT(r + 8) | ((!blocked) << r);
334 int ret;
335
336 ret = hp_wmi_perform_query(HPWMI_WIRELESS_QUERY, 1,
337 &query, sizeof(query), 0);
338 if (ret)
339 return -EINVAL;
340 return 0;
341}
342
343static const struct rfkill_ops hp_wmi_rfkill_ops = {
344 .set_block = hp_wmi_set_block,
345};
346
347static bool hp_wmi_get_sw_state(enum hp_wmi_radio r)
348{
349 int wireless = 0;
350 int mask;
351 hp_wmi_perform_query(HPWMI_WIRELESS_QUERY, 0,
352 &wireless, sizeof(wireless),
353 sizeof(wireless));
354 /* TBD: Pass error */
355
356 mask = 0x200 << (r * 8);
357
358 if (wireless & mask)
359 return false;
360 else
361 return true;
362}
363
364static bool hp_wmi_get_hw_state(enum hp_wmi_radio r)
365{
366 int wireless = 0;
367 int mask;
368 hp_wmi_perform_query(HPWMI_WIRELESS_QUERY, 0,
369 &wireless, sizeof(wireless),
370 sizeof(wireless));
371 /* TBD: Pass error */
372
373 mask = 0x800 << (r * 8);
374
375 if (wireless & mask)
376 return false;
377 else
378 return true;
379}
380
381static int hp_wmi_rfkill2_set_block(void *data, bool blocked)
382{
383 int rfkill_id = (int)(long)data;
384 char buffer[4] = { 0x01, 0x00, rfkill_id, !blocked };
385
386 if (hp_wmi_perform_query(HPWMI_WIRELESS2_QUERY, 1,
387 buffer, sizeof(buffer), 0))
388 return -EINVAL;
389 return 0;
390}
391
392static const struct rfkill_ops hp_wmi_rfkill2_ops = {
393 .set_block = hp_wmi_rfkill2_set_block,
394};
395
396static int hp_wmi_rfkill2_refresh(void)
397{
398 int err, i;
399 struct bios_rfkill2_state state;
400
401 err = hp_wmi_perform_query(HPWMI_WIRELESS2_QUERY, 0, &state,
402 0, sizeof(state));
403 if (err)
404 return err;
405
406 for (i = 0; i < rfkill2_count; i++) {
407 int num = rfkill2[i].num;
408 struct bios_rfkill2_device_state *devstate;
409 devstate = &state.device[num];
410
411 if (num >= state.count ||
412 devstate->rfkill_id != rfkill2[i].id) {
413 pr_warn("power configuration of the wireless devices unexpectedly changed\n");
414 continue;
415 }
416
417 rfkill_set_states(rfkill2[i].rfkill,
418 IS_SWBLOCKED(devstate->power),
419 IS_HWBLOCKED(devstate->power));
420 }
421
422 return 0;
423}
424
425static int hp_wmi_post_code_state(void)
426{
427 int state = 0;
428 int ret = hp_wmi_perform_query(HPWMI_POSTCODEERROR_QUERY, 0, &state,
429 sizeof(state), sizeof(state));
430 if (ret)
431 return -EINVAL;
432 return state;
433}
434
435static ssize_t show_display(struct device *dev, struct device_attribute *attr,
436 char *buf)
437{
438 int value = hp_wmi_display_state();
439 if (value < 0)
440 return -EINVAL;
441 return sprintf(buf, "%d\n", value);
442}
443
444static ssize_t show_hddtemp(struct device *dev, struct device_attribute *attr,
445 char *buf)
446{
447 int value = hp_wmi_hddtemp_state();
448 if (value < 0)
449 return -EINVAL;
450 return sprintf(buf, "%d\n", value);
451}
452
453static ssize_t show_als(struct device *dev, struct device_attribute *attr,
454 char *buf)
455{
456 int value = hp_wmi_als_state();
457 if (value < 0)
458 return -EINVAL;
459 return sprintf(buf, "%d\n", value);
460}
461
462static ssize_t show_dock(struct device *dev, struct device_attribute *attr,
463 char *buf)
464{
465 int value = hp_wmi_dock_state();
466 if (value < 0)
467 return -EINVAL;
468 return sprintf(buf, "%d\n", value);
469}
470
471static ssize_t show_tablet(struct device *dev, struct device_attribute *attr,
472 char *buf)
473{
474 int value = hp_wmi_tablet_state();
475 if (value < 0)
476 return -EINVAL;
477 return sprintf(buf, "%d\n", value);
478}
479
480static ssize_t show_postcode(struct device *dev, struct device_attribute *attr,
481 char *buf)
482{
483 /* Get the POST error code of previous boot failure. */
484 int value = hp_wmi_post_code_state();
485 if (value < 0)
486 return -EINVAL;
487 return sprintf(buf, "0x%x\n", value);
488}
489
490static ssize_t set_als(struct device *dev, struct device_attribute *attr,
491 const char *buf, size_t count)
492{
493 u32 tmp = simple_strtoul(buf, NULL, 10);
494 int ret = hp_wmi_perform_query(HPWMI_ALS_QUERY, 1, &tmp,
495 sizeof(tmp), sizeof(tmp));
496 if (ret)
497 return -EINVAL;
498
499 return count;
500}
501
502static ssize_t set_postcode(struct device *dev, struct device_attribute *attr,
503 const char *buf, size_t count)
504{
505 int ret;
506 u32 tmp;
507 long unsigned int tmp2;
508
509 ret = kstrtoul(buf, 10, &tmp2);
510 if (ret || tmp2 != 1)
511 return -EINVAL;
512
513 /* Clear the POST error code. It is kept until until cleared. */
514 tmp = (u32) tmp2;
515 ret = hp_wmi_perform_query(HPWMI_POSTCODEERROR_QUERY, 1, &tmp,
516 sizeof(tmp), sizeof(tmp));
517 if (ret)
518 return -EINVAL;
519
520 return count;
521}
522
523static DEVICE_ATTR(display, S_IRUGO, show_display, NULL);
524static DEVICE_ATTR(hddtemp, S_IRUGO, show_hddtemp, NULL);
525static DEVICE_ATTR(als, S_IRUGO | S_IWUSR, show_als, set_als);
526static DEVICE_ATTR(dock, S_IRUGO, show_dock, NULL);
527static DEVICE_ATTR(tablet, S_IRUGO, show_tablet, NULL);
528static DEVICE_ATTR(postcode, S_IRUGO | S_IWUSR, show_postcode, set_postcode);
529
530static void hp_wmi_notify(u32 value, void *context)
531{
532 struct acpi_buffer response = { ACPI_ALLOCATE_BUFFER, NULL };
533 union acpi_object *obj;
534 u32 event_id, event_data;
535 int key_code = 0, ret;
536 u32 *location;
537 acpi_status status;
538
539 status = wmi_get_event_data(value, &response);
540 if (status != AE_OK) {
541 pr_info("bad event status 0x%x\n", status);
542 return;
543 }
544
545 obj = (union acpi_object *)response.pointer;
546
547 if (!obj)
548 return;
549 if (obj->type != ACPI_TYPE_BUFFER) {
550 pr_info("Unknown response received %d\n", obj->type);
551 kfree(obj);
552 return;
553 }
554
555 /*
556 * Depending on ACPI version the concatenation of id and event data
557 * inside _WED function will result in a 8 or 16 byte buffer.
558 */
559 location = (u32 *)obj->buffer.pointer;
560 if (obj->buffer.length == 8) {
561 event_id = *location;
562 event_data = *(location + 1);
563 } else if (obj->buffer.length == 16) {
564 event_id = *location;
565 event_data = *(location + 2);
566 } else {
567 pr_info("Unknown buffer length %d\n", obj->buffer.length);
568 kfree(obj);
569 return;
570 }
571 kfree(obj);
572
573 switch (event_id) {
574 case HPWMI_DOCK_EVENT:
575 input_report_switch(hp_wmi_input_dev, SW_DOCK,
576 hp_wmi_dock_state());
577 input_report_switch(hp_wmi_input_dev, SW_TABLET_MODE,
578 hp_wmi_tablet_state());
579 input_sync(hp_wmi_input_dev);
580 break;
581 case HPWMI_PARK_HDD:
582 break;
583 case HPWMI_SMART_ADAPTER:
584 break;
585 case HPWMI_BEZEL_BUTTON:
586 ret = hp_wmi_perform_query(HPWMI_HOTKEY_QUERY, 0,
587 &key_code,
588 sizeof(key_code),
589 sizeof(key_code));
590 if (ret)
591 break;
592
593 if (!sparse_keymap_report_event(hp_wmi_input_dev,
594 key_code, 1, true))
595 pr_info("Unknown key code - 0x%x\n", key_code);
596 break;
597 case HPWMI_WIRELESS:
598 if (rfkill2_count) {
599 hp_wmi_rfkill2_refresh();
600 break;
601 }
602
603 if (wifi_rfkill)
604 rfkill_set_states(wifi_rfkill,
605 hp_wmi_get_sw_state(HPWMI_WIFI),
606 hp_wmi_get_hw_state(HPWMI_WIFI));
607 if (bluetooth_rfkill)
608 rfkill_set_states(bluetooth_rfkill,
609 hp_wmi_get_sw_state(HPWMI_BLUETOOTH),
610 hp_wmi_get_hw_state(HPWMI_BLUETOOTH));
611 if (wwan_rfkill)
612 rfkill_set_states(wwan_rfkill,
613 hp_wmi_get_sw_state(HPWMI_WWAN),
614 hp_wmi_get_hw_state(HPWMI_WWAN));
615 break;
616 case HPWMI_CPU_BATTERY_THROTTLE:
617 pr_info("Unimplemented CPU throttle because of 3 Cell battery event detected\n");
618 break;
619 case HPWMI_LOCK_SWITCH:
620 break;
621 case HPWMI_LID_SWITCH:
622 break;
623 case HPWMI_SCREEN_ROTATION:
624 break;
625 case HPWMI_COOLSENSE_SYSTEM_MOBILE:
626 break;
627 case HPWMI_COOLSENSE_SYSTEM_HOT:
628 break;
629 case HPWMI_PROXIMITY_SENSOR:
630 break;
631 case HPWMI_BACKLIT_KB_BRIGHTNESS:
632 break;
633 case HPWMI_PEAKSHIFT_PERIOD:
634 break;
635 case HPWMI_BATTERY_CHARGE_PERIOD:
636 break;
637 default:
638 pr_info("Unknown event_id - %d - 0x%x\n", event_id, event_data);
639 break;
640 }
641}
642
643static int __init hp_wmi_input_setup(void)
644{
645 acpi_status status;
646 int err;
647
648 hp_wmi_input_dev = input_allocate_device();
649 if (!hp_wmi_input_dev)
650 return -ENOMEM;
651
652 hp_wmi_input_dev->name = "HP WMI hotkeys";
653 hp_wmi_input_dev->phys = "wmi/input0";
654 hp_wmi_input_dev->id.bustype = BUS_HOST;
655
656 __set_bit(EV_SW, hp_wmi_input_dev->evbit);
657 __set_bit(SW_DOCK, hp_wmi_input_dev->swbit);
658 __set_bit(SW_TABLET_MODE, hp_wmi_input_dev->swbit);
659
660 err = sparse_keymap_setup(hp_wmi_input_dev, hp_wmi_keymap, NULL);
661 if (err)
662 goto err_free_dev;
663
664 /* Set initial hardware state */
665 input_report_switch(hp_wmi_input_dev, SW_DOCK, hp_wmi_dock_state());
666 input_report_switch(hp_wmi_input_dev, SW_TABLET_MODE,
667 hp_wmi_tablet_state());
668 input_sync(hp_wmi_input_dev);
669
670 if (!hp_wmi_bios_2009_later() && hp_wmi_bios_2008_later())
671 hp_wmi_enable_hotkeys();
672
673 status = wmi_install_notify_handler(HPWMI_EVENT_GUID, hp_wmi_notify, NULL);
674 if (ACPI_FAILURE(status)) {
675 err = -EIO;
676 goto err_free_keymap;
677 }
678
679 err = input_register_device(hp_wmi_input_dev);
680 if (err)
681 goto err_uninstall_notifier;
682
683 return 0;
684
685 err_uninstall_notifier:
686 wmi_remove_notify_handler(HPWMI_EVENT_GUID);
687 err_free_keymap:
688 sparse_keymap_free(hp_wmi_input_dev);
689 err_free_dev:
690 input_free_device(hp_wmi_input_dev);
691 return err;
692}
693
694static void hp_wmi_input_destroy(void)
695{
696 wmi_remove_notify_handler(HPWMI_EVENT_GUID);
697 sparse_keymap_free(hp_wmi_input_dev);
698 input_unregister_device(hp_wmi_input_dev);
699}
700
701static void cleanup_sysfs(struct platform_device *device)
702{
703 device_remove_file(&device->dev, &dev_attr_display);
704 device_remove_file(&device->dev, &dev_attr_hddtemp);
705 device_remove_file(&device->dev, &dev_attr_als);
706 device_remove_file(&device->dev, &dev_attr_dock);
707 device_remove_file(&device->dev, &dev_attr_tablet);
708 device_remove_file(&device->dev, &dev_attr_postcode);
709}
710
711static int __init hp_wmi_rfkill_setup(struct platform_device *device)
712{
713 int err;
714 int wireless = 0;
715
716 err = hp_wmi_perform_query(HPWMI_WIRELESS_QUERY, 0, &wireless,
717 sizeof(wireless), sizeof(wireless));
718 if (err)
719 return err;
720
721 if (wireless & 0x1) {
722 wifi_rfkill = rfkill_alloc("hp-wifi", &device->dev,
723 RFKILL_TYPE_WLAN,
724 &hp_wmi_rfkill_ops,
725 (void *) HPWMI_WIFI);
726 if (!wifi_rfkill)
727 return -ENOMEM;
728 rfkill_init_sw_state(wifi_rfkill,
729 hp_wmi_get_sw_state(HPWMI_WIFI));
730 rfkill_set_hw_state(wifi_rfkill,
731 hp_wmi_get_hw_state(HPWMI_WIFI));
732 err = rfkill_register(wifi_rfkill);
733 if (err)
734 goto register_wifi_error;
735 }
736
737 if (wireless & 0x2) {
738 bluetooth_rfkill = rfkill_alloc("hp-bluetooth", &device->dev,
739 RFKILL_TYPE_BLUETOOTH,
740 &hp_wmi_rfkill_ops,
741 (void *) HPWMI_BLUETOOTH);
742 if (!bluetooth_rfkill) {
743 err = -ENOMEM;
744 goto register_bluetooth_error;
745 }
746 rfkill_init_sw_state(bluetooth_rfkill,
747 hp_wmi_get_sw_state(HPWMI_BLUETOOTH));
748 rfkill_set_hw_state(bluetooth_rfkill,
749 hp_wmi_get_hw_state(HPWMI_BLUETOOTH));
750 err = rfkill_register(bluetooth_rfkill);
751 if (err)
752 goto register_bluetooth_error;
753 }
754
755 if (wireless & 0x4) {
756 wwan_rfkill = rfkill_alloc("hp-wwan", &device->dev,
757 RFKILL_TYPE_WWAN,
758 &hp_wmi_rfkill_ops,
759 (void *) HPWMI_WWAN);
760 if (!wwan_rfkill) {
761 err = -ENOMEM;
762 goto register_wwan_error;
763 }
764 rfkill_init_sw_state(wwan_rfkill,
765 hp_wmi_get_sw_state(HPWMI_WWAN));
766 rfkill_set_hw_state(wwan_rfkill,
767 hp_wmi_get_hw_state(HPWMI_WWAN));
768 err = rfkill_register(wwan_rfkill);
769 if (err)
770 goto register_wwan_error;
771 }
772
773 return 0;
774
775register_wwan_error:
776 rfkill_destroy(wwan_rfkill);
777 wwan_rfkill = NULL;
778 if (bluetooth_rfkill)
779 rfkill_unregister(bluetooth_rfkill);
780register_bluetooth_error:
781 rfkill_destroy(bluetooth_rfkill);
782 bluetooth_rfkill = NULL;
783 if (wifi_rfkill)
784 rfkill_unregister(wifi_rfkill);
785register_wifi_error:
786 rfkill_destroy(wifi_rfkill);
787 wifi_rfkill = NULL;
788 return err;
789}
790
791static int __init hp_wmi_rfkill2_setup(struct platform_device *device)
792{
793 int err, i;
794 struct bios_rfkill2_state state;
795 err = hp_wmi_perform_query(HPWMI_WIRELESS2_QUERY, 0, &state,
796 0, sizeof(state));
797 if (err)
798 return err;
799
800 if (state.count > HPWMI_MAX_RFKILL2_DEVICES) {
801 pr_warn("unable to parse 0x1b query output\n");
802 return -EINVAL;
803 }
804
805 for (i = 0; i < state.count; i++) {
806 struct rfkill *rfkill;
807 enum rfkill_type type;
808 char *name;
809 switch (state.device[i].radio_type) {
810 case HPWMI_WIFI:
811 type = RFKILL_TYPE_WLAN;
812 name = "hp-wifi";
813 break;
814 case HPWMI_BLUETOOTH:
815 type = RFKILL_TYPE_BLUETOOTH;
816 name = "hp-bluetooth";
817 break;
818 case HPWMI_WWAN:
819 type = RFKILL_TYPE_WWAN;
820 name = "hp-wwan";
821 break;
822 case HPWMI_GPS:
823 type = RFKILL_TYPE_GPS;
824 name = "hp-gps";
825 break;
826 default:
827 pr_warn("unknown device type 0x%x\n",
828 state.device[i].radio_type);
829 continue;
830 }
831
832 if (!state.device[i].vendor_id) {
833 pr_warn("zero device %d while %d reported\n",
834 i, state.count);
835 continue;
836 }
837
838 rfkill = rfkill_alloc(name, &device->dev, type,
839 &hp_wmi_rfkill2_ops, (void *)(long)i);
840 if (!rfkill) {
841 err = -ENOMEM;
842 goto fail;
843 }
844
845 rfkill2[rfkill2_count].id = state.device[i].rfkill_id;
846 rfkill2[rfkill2_count].num = i;
847 rfkill2[rfkill2_count].rfkill = rfkill;
848
849 rfkill_init_sw_state(rfkill,
850 IS_SWBLOCKED(state.device[i].power));
851 rfkill_set_hw_state(rfkill,
852 IS_HWBLOCKED(state.device[i].power));
853
854 if (!(state.device[i].power & HPWMI_POWER_BIOS))
855 pr_info("device %s blocked by BIOS\n", name);
856
857 err = rfkill_register(rfkill);
858 if (err) {
859 rfkill_destroy(rfkill);
860 goto fail;
861 }
862
863 rfkill2_count++;
864 }
865
866 return 0;
867fail:
868 for (; rfkill2_count > 0; rfkill2_count--) {
869 rfkill_unregister(rfkill2[rfkill2_count - 1].rfkill);
870 rfkill_destroy(rfkill2[rfkill2_count - 1].rfkill);
871 }
872 return err;
873}
874
875static int __init hp_wmi_bios_setup(struct platform_device *device)
876{
877 int err;
878
879 /* clear detected rfkill devices */
880 wifi_rfkill = NULL;
881 bluetooth_rfkill = NULL;
882 wwan_rfkill = NULL;
883 rfkill2_count = 0;
884
885 if (hp_wmi_bios_2009_later() || hp_wmi_rfkill_setup(device))
886 hp_wmi_rfkill2_setup(device);
887
888 err = device_create_file(&device->dev, &dev_attr_display);
889 if (err)
890 goto add_sysfs_error;
891 err = device_create_file(&device->dev, &dev_attr_hddtemp);
892 if (err)
893 goto add_sysfs_error;
894 err = device_create_file(&device->dev, &dev_attr_als);
895 if (err)
896 goto add_sysfs_error;
897 err = device_create_file(&device->dev, &dev_attr_dock);
898 if (err)
899 goto add_sysfs_error;
900 err = device_create_file(&device->dev, &dev_attr_tablet);
901 if (err)
902 goto add_sysfs_error;
903 err = device_create_file(&device->dev, &dev_attr_postcode);
904 if (err)
905 goto add_sysfs_error;
906 return 0;
907
908add_sysfs_error:
909 cleanup_sysfs(device);
910 return err;
911}
912
913static int __exit hp_wmi_bios_remove(struct platform_device *device)
914{
915 int i;
916 cleanup_sysfs(device);
917
918 for (i = 0; i < rfkill2_count; i++) {
919 rfkill_unregister(rfkill2[i].rfkill);
920 rfkill_destroy(rfkill2[i].rfkill);
921 }
922
923 if (wifi_rfkill) {
924 rfkill_unregister(wifi_rfkill);
925 rfkill_destroy(wifi_rfkill);
926 }
927 if (bluetooth_rfkill) {
928 rfkill_unregister(bluetooth_rfkill);
929 rfkill_destroy(bluetooth_rfkill);
930 }
931 if (wwan_rfkill) {
932 rfkill_unregister(wwan_rfkill);
933 rfkill_destroy(wwan_rfkill);
934 }
935
936 return 0;
937}
938
939static int hp_wmi_resume_handler(struct device *device)
940{
941 /*
942 * Hardware state may have changed while suspended, so trigger
943 * input events for the current state. As this is a switch,
944 * the input layer will only actually pass it on if the state
945 * changed.
946 */
947 if (hp_wmi_input_dev) {
948 input_report_switch(hp_wmi_input_dev, SW_DOCK,
949 hp_wmi_dock_state());
950 input_report_switch(hp_wmi_input_dev, SW_TABLET_MODE,
951 hp_wmi_tablet_state());
952 input_sync(hp_wmi_input_dev);
953 }
954
955 if (rfkill2_count)
956 hp_wmi_rfkill2_refresh();
957
958 if (wifi_rfkill)
959 rfkill_set_states(wifi_rfkill,
960 hp_wmi_get_sw_state(HPWMI_WIFI),
961 hp_wmi_get_hw_state(HPWMI_WIFI));
962 if (bluetooth_rfkill)
963 rfkill_set_states(bluetooth_rfkill,
964 hp_wmi_get_sw_state(HPWMI_BLUETOOTH),
965 hp_wmi_get_hw_state(HPWMI_BLUETOOTH));
966 if (wwan_rfkill)
967 rfkill_set_states(wwan_rfkill,
968 hp_wmi_get_sw_state(HPWMI_WWAN),
969 hp_wmi_get_hw_state(HPWMI_WWAN));
970
971 return 0;
972}
973
974static const struct dev_pm_ops hp_wmi_pm_ops = {
975 .resume = hp_wmi_resume_handler,
976 .restore = hp_wmi_resume_handler,
977};
978
979static struct platform_driver hp_wmi_driver = {
980 .driver = {
981 .name = "hp-wmi",
982 .pm = &hp_wmi_pm_ops,
983 },
984 .remove = __exit_p(hp_wmi_bios_remove),
985};
986
987static int __init hp_wmi_init(void)
988{
989 int err;
990 int event_capable = wmi_has_guid(HPWMI_EVENT_GUID);
991 int bios_capable = wmi_has_guid(HPWMI_BIOS_GUID);
992
993 if (!bios_capable && !event_capable)
994 return -ENODEV;
995
996 if (event_capable) {
997 err = hp_wmi_input_setup();
998 if (err)
999 return err;
1000 }
1001
1002 if (bios_capable) {
1003 hp_wmi_platform_dev =
1004 platform_device_register_simple("hp-wmi", -1, NULL, 0);
1005 if (IS_ERR(hp_wmi_platform_dev)) {
1006 err = PTR_ERR(hp_wmi_platform_dev);
1007 goto err_destroy_input;
1008 }
1009
1010 err = platform_driver_probe(&hp_wmi_driver, hp_wmi_bios_setup);
1011 if (err)
1012 goto err_unregister_device;
1013 }
1014
1015 return 0;
1016
1017err_unregister_device:
1018 platform_device_unregister(hp_wmi_platform_dev);
1019err_destroy_input:
1020 if (event_capable)
1021 hp_wmi_input_destroy();
1022
1023 return err;
1024}
1025module_init(hp_wmi_init);
1026
1027static void __exit hp_wmi_exit(void)
1028{
1029 if (wmi_has_guid(HPWMI_EVENT_GUID))
1030 hp_wmi_input_destroy();
1031
1032 if (hp_wmi_platform_dev) {
1033 platform_device_unregister(hp_wmi_platform_dev);
1034 platform_driver_unregister(&hp_wmi_driver);
1035 }
1036}
1037module_exit(hp_wmi_exit);
1// SPDX-License-Identifier: GPL-2.0-or-later
2/*
3 * HP WMI hotkeys
4 *
5 * Copyright (C) 2008 Red Hat <mjg@redhat.com>
6 * Copyright (C) 2010, 2011 Anssi Hannula <anssi.hannula@iki.fi>
7 *
8 * Portions based on wistron_btns.c:
9 * Copyright (C) 2005 Miloslav Trmac <mitr@volny.cz>
10 * Copyright (C) 2005 Bernhard Rosenkraenzer <bero@arklinux.org>
11 * Copyright (C) 2005 Dmitry Torokhov <dtor@mail.ru>
12 */
13
14#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
15
16#include <linux/kernel.h>
17#include <linux/module.h>
18#include <linux/init.h>
19#include <linux/slab.h>
20#include <linux/types.h>
21#include <linux/input.h>
22#include <linux/input/sparse-keymap.h>
23#include <linux/platform_device.h>
24#include <linux/platform_profile.h>
25#include <linux/acpi.h>
26#include <linux/rfkill.h>
27#include <linux/string.h>
28
29MODULE_AUTHOR("Matthew Garrett <mjg59@srcf.ucam.org>");
30MODULE_DESCRIPTION("HP laptop WMI hotkeys driver");
31MODULE_LICENSE("GPL");
32
33MODULE_ALIAS("wmi:95F24279-4D7B-4334-9387-ACCDC67EF61C");
34MODULE_ALIAS("wmi:5FB7F034-2C63-45e9-BE91-3D44E2C707E4");
35
36static int enable_tablet_mode_sw = -1;
37module_param(enable_tablet_mode_sw, int, 0444);
38MODULE_PARM_DESC(enable_tablet_mode_sw, "Enable SW_TABLET_MODE reporting (-1=auto, 0=no, 1=yes)");
39
40#define HPWMI_EVENT_GUID "95F24279-4D7B-4334-9387-ACCDC67EF61C"
41#define HPWMI_BIOS_GUID "5FB7F034-2C63-45e9-BE91-3D44E2C707E4"
42
43enum hp_wmi_radio {
44 HPWMI_WIFI = 0x0,
45 HPWMI_BLUETOOTH = 0x1,
46 HPWMI_WWAN = 0x2,
47 HPWMI_GPS = 0x3,
48};
49
50enum hp_wmi_event_ids {
51 HPWMI_DOCK_EVENT = 0x01,
52 HPWMI_PARK_HDD = 0x02,
53 HPWMI_SMART_ADAPTER = 0x03,
54 HPWMI_BEZEL_BUTTON = 0x04,
55 HPWMI_WIRELESS = 0x05,
56 HPWMI_CPU_BATTERY_THROTTLE = 0x06,
57 HPWMI_LOCK_SWITCH = 0x07,
58 HPWMI_LID_SWITCH = 0x08,
59 HPWMI_SCREEN_ROTATION = 0x09,
60 HPWMI_COOLSENSE_SYSTEM_MOBILE = 0x0A,
61 HPWMI_COOLSENSE_SYSTEM_HOT = 0x0B,
62 HPWMI_PROXIMITY_SENSOR = 0x0C,
63 HPWMI_BACKLIT_KB_BRIGHTNESS = 0x0D,
64 HPWMI_PEAKSHIFT_PERIOD = 0x0F,
65 HPWMI_BATTERY_CHARGE_PERIOD = 0x10,
66};
67
68struct bios_args {
69 u32 signature;
70 u32 command;
71 u32 commandtype;
72 u32 datasize;
73 u8 data[128];
74};
75
76enum hp_wmi_commandtype {
77 HPWMI_DISPLAY_QUERY = 0x01,
78 HPWMI_HDDTEMP_QUERY = 0x02,
79 HPWMI_ALS_QUERY = 0x03,
80 HPWMI_HARDWARE_QUERY = 0x04,
81 HPWMI_WIRELESS_QUERY = 0x05,
82 HPWMI_BATTERY_QUERY = 0x07,
83 HPWMI_BIOS_QUERY = 0x09,
84 HPWMI_FEATURE_QUERY = 0x0b,
85 HPWMI_HOTKEY_QUERY = 0x0c,
86 HPWMI_FEATURE2_QUERY = 0x0d,
87 HPWMI_WIRELESS2_QUERY = 0x1b,
88 HPWMI_POSTCODEERROR_QUERY = 0x2a,
89 HPWMI_THERMAL_PROFILE_QUERY = 0x4c,
90};
91
92enum hp_wmi_command {
93 HPWMI_READ = 0x01,
94 HPWMI_WRITE = 0x02,
95 HPWMI_ODM = 0x03,
96};
97
98enum hp_wmi_hardware_mask {
99 HPWMI_DOCK_MASK = 0x01,
100 HPWMI_TABLET_MASK = 0x04,
101};
102
103struct bios_return {
104 u32 sigpass;
105 u32 return_code;
106};
107
108enum hp_return_value {
109 HPWMI_RET_WRONG_SIGNATURE = 0x02,
110 HPWMI_RET_UNKNOWN_COMMAND = 0x03,
111 HPWMI_RET_UNKNOWN_CMDTYPE = 0x04,
112 HPWMI_RET_INVALID_PARAMETERS = 0x05,
113};
114
115enum hp_wireless2_bits {
116 HPWMI_POWER_STATE = 0x01,
117 HPWMI_POWER_SOFT = 0x02,
118 HPWMI_POWER_BIOS = 0x04,
119 HPWMI_POWER_HARD = 0x08,
120 HPWMI_POWER_FW_OR_HW = HPWMI_POWER_BIOS | HPWMI_POWER_HARD,
121};
122
123enum hp_thermal_profile {
124 HP_THERMAL_PROFILE_PERFORMANCE = 0x00,
125 HP_THERMAL_PROFILE_DEFAULT = 0x01,
126 HP_THERMAL_PROFILE_COOL = 0x02
127};
128
129#define IS_HWBLOCKED(x) ((x & HPWMI_POWER_FW_OR_HW) != HPWMI_POWER_FW_OR_HW)
130#define IS_SWBLOCKED(x) !(x & HPWMI_POWER_SOFT)
131
132struct bios_rfkill2_device_state {
133 u8 radio_type;
134 u8 bus_type;
135 u16 vendor_id;
136 u16 product_id;
137 u16 subsys_vendor_id;
138 u16 subsys_product_id;
139 u8 rfkill_id;
140 u8 power;
141 u8 unknown[4];
142};
143
144/* 7 devices fit into the 128 byte buffer */
145#define HPWMI_MAX_RFKILL2_DEVICES 7
146
147struct bios_rfkill2_state {
148 u8 unknown[7];
149 u8 count;
150 u8 pad[8];
151 struct bios_rfkill2_device_state device[HPWMI_MAX_RFKILL2_DEVICES];
152};
153
154static const struct key_entry hp_wmi_keymap[] = {
155 { KE_KEY, 0x02, { KEY_BRIGHTNESSUP } },
156 { KE_KEY, 0x03, { KEY_BRIGHTNESSDOWN } },
157 { KE_KEY, 0x20e6, { KEY_PROG1 } },
158 { KE_KEY, 0x20e8, { KEY_MEDIA } },
159 { KE_KEY, 0x2142, { KEY_MEDIA } },
160 { KE_KEY, 0x213b, { KEY_INFO } },
161 { KE_KEY, 0x2169, { KEY_ROTATE_DISPLAY } },
162 { KE_KEY, 0x216a, { KEY_SETUP } },
163 { KE_KEY, 0x231b, { KEY_HELP } },
164 { KE_END, 0 }
165};
166
167static struct input_dev *hp_wmi_input_dev;
168static struct platform_device *hp_wmi_platform_dev;
169static struct platform_profile_handler platform_profile_handler;
170static bool platform_profile_support;
171
172static struct rfkill *wifi_rfkill;
173static struct rfkill *bluetooth_rfkill;
174static struct rfkill *wwan_rfkill;
175
176struct rfkill2_device {
177 u8 id;
178 int num;
179 struct rfkill *rfkill;
180};
181
182static int rfkill2_count;
183static struct rfkill2_device rfkill2[HPWMI_MAX_RFKILL2_DEVICES];
184
185/* map output size to the corresponding WMI method id */
186static inline int encode_outsize_for_pvsz(int outsize)
187{
188 if (outsize > 4096)
189 return -EINVAL;
190 if (outsize > 1024)
191 return 5;
192 if (outsize > 128)
193 return 4;
194 if (outsize > 4)
195 return 3;
196 if (outsize > 0)
197 return 2;
198 return 1;
199}
200
201/*
202 * hp_wmi_perform_query
203 *
204 * query: The commandtype (enum hp_wmi_commandtype)
205 * write: The command (enum hp_wmi_command)
206 * buffer: Buffer used as input and/or output
207 * insize: Size of input buffer
208 * outsize: Size of output buffer
209 *
210 * returns zero on success
211 * an HP WMI query specific error code (which is positive)
212 * -EINVAL if the query was not successful at all
213 * -EINVAL if the output buffer size exceeds buffersize
214 *
215 * Note: The buffersize must at least be the maximum of the input and output
216 * size. E.g. Battery info query is defined to have 1 byte input
217 * and 128 byte output. The caller would do:
218 * buffer = kzalloc(128, GFP_KERNEL);
219 * ret = hp_wmi_perform_query(HPWMI_BATTERY_QUERY, HPWMI_READ, buffer, 1, 128)
220 */
221static int hp_wmi_perform_query(int query, enum hp_wmi_command command,
222 void *buffer, int insize, int outsize)
223{
224 int mid;
225 struct bios_return *bios_return;
226 int actual_outsize;
227 union acpi_object *obj;
228 struct bios_args args = {
229 .signature = 0x55434553,
230 .command = command,
231 .commandtype = query,
232 .datasize = insize,
233 .data = { 0 },
234 };
235 struct acpi_buffer input = { sizeof(struct bios_args), &args };
236 struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
237 int ret = 0;
238
239 mid = encode_outsize_for_pvsz(outsize);
240 if (WARN_ON(mid < 0))
241 return mid;
242
243 if (WARN_ON(insize > sizeof(args.data)))
244 return -EINVAL;
245 memcpy(&args.data[0], buffer, insize);
246
247 wmi_evaluate_method(HPWMI_BIOS_GUID, 0, mid, &input, &output);
248
249 obj = output.pointer;
250
251 if (!obj)
252 return -EINVAL;
253
254 if (obj->type != ACPI_TYPE_BUFFER) {
255 ret = -EINVAL;
256 goto out_free;
257 }
258
259 bios_return = (struct bios_return *)obj->buffer.pointer;
260 ret = bios_return->return_code;
261
262 if (ret) {
263 if (ret != HPWMI_RET_UNKNOWN_COMMAND &&
264 ret != HPWMI_RET_UNKNOWN_CMDTYPE)
265 pr_warn("query 0x%x returned error 0x%x\n", query, ret);
266 goto out_free;
267 }
268
269 /* Ignore output data of zero size */
270 if (!outsize)
271 goto out_free;
272
273 actual_outsize = min(outsize, (int)(obj->buffer.length - sizeof(*bios_return)));
274 memcpy(buffer, obj->buffer.pointer + sizeof(*bios_return), actual_outsize);
275 memset(buffer + actual_outsize, 0, outsize - actual_outsize);
276
277out_free:
278 kfree(obj);
279 return ret;
280}
281
282static int hp_wmi_read_int(int query)
283{
284 int val = 0, ret;
285
286 ret = hp_wmi_perform_query(query, HPWMI_READ, &val,
287 sizeof(val), sizeof(val));
288
289 if (ret)
290 return ret < 0 ? ret : -EINVAL;
291
292 return val;
293}
294
295static int hp_wmi_hw_state(int mask)
296{
297 int state = hp_wmi_read_int(HPWMI_HARDWARE_QUERY);
298
299 if (state < 0)
300 return state;
301
302 return !!(state & mask);
303}
304
305static int __init hp_wmi_bios_2008_later(void)
306{
307 int state = 0;
308 int ret = hp_wmi_perform_query(HPWMI_FEATURE_QUERY, HPWMI_READ, &state,
309 sizeof(state), sizeof(state));
310 if (!ret)
311 return 1;
312
313 return (ret == HPWMI_RET_UNKNOWN_CMDTYPE) ? 0 : -ENXIO;
314}
315
316static int __init hp_wmi_bios_2009_later(void)
317{
318 u8 state[128];
319 int ret = hp_wmi_perform_query(HPWMI_FEATURE2_QUERY, HPWMI_READ, &state,
320 sizeof(state), sizeof(state));
321 if (!ret)
322 return 1;
323
324 return (ret == HPWMI_RET_UNKNOWN_CMDTYPE) ? 0 : -ENXIO;
325}
326
327static int __init hp_wmi_enable_hotkeys(void)
328{
329 int value = 0x6e;
330 int ret = hp_wmi_perform_query(HPWMI_BIOS_QUERY, HPWMI_WRITE, &value,
331 sizeof(value), 0);
332
333 return ret <= 0 ? ret : -EINVAL;
334}
335
336static int hp_wmi_set_block(void *data, bool blocked)
337{
338 enum hp_wmi_radio r = (enum hp_wmi_radio) data;
339 int query = BIT(r + 8) | ((!blocked) << r);
340 int ret;
341
342 ret = hp_wmi_perform_query(HPWMI_WIRELESS_QUERY, HPWMI_WRITE,
343 &query, sizeof(query), 0);
344
345 return ret <= 0 ? ret : -EINVAL;
346}
347
348static const struct rfkill_ops hp_wmi_rfkill_ops = {
349 .set_block = hp_wmi_set_block,
350};
351
352static bool hp_wmi_get_sw_state(enum hp_wmi_radio r)
353{
354 int mask = 0x200 << (r * 8);
355
356 int wireless = hp_wmi_read_int(HPWMI_WIRELESS_QUERY);
357
358 /* TBD: Pass error */
359 WARN_ONCE(wireless < 0, "error executing HPWMI_WIRELESS_QUERY");
360
361 return !(wireless & mask);
362}
363
364static bool hp_wmi_get_hw_state(enum hp_wmi_radio r)
365{
366 int mask = 0x800 << (r * 8);
367
368 int wireless = hp_wmi_read_int(HPWMI_WIRELESS_QUERY);
369
370 /* TBD: Pass error */
371 WARN_ONCE(wireless < 0, "error executing HPWMI_WIRELESS_QUERY");
372
373 return !(wireless & mask);
374}
375
376static int hp_wmi_rfkill2_set_block(void *data, bool blocked)
377{
378 int rfkill_id = (int)(long)data;
379 char buffer[4] = { 0x01, 0x00, rfkill_id, !blocked };
380 int ret;
381
382 ret = hp_wmi_perform_query(HPWMI_WIRELESS2_QUERY, HPWMI_WRITE,
383 buffer, sizeof(buffer), 0);
384
385 return ret <= 0 ? ret : -EINVAL;
386}
387
388static const struct rfkill_ops hp_wmi_rfkill2_ops = {
389 .set_block = hp_wmi_rfkill2_set_block,
390};
391
392static int hp_wmi_rfkill2_refresh(void)
393{
394 struct bios_rfkill2_state state;
395 int err, i;
396
397 err = hp_wmi_perform_query(HPWMI_WIRELESS2_QUERY, HPWMI_READ, &state,
398 sizeof(state), sizeof(state));
399 if (err)
400 return err;
401
402 for (i = 0; i < rfkill2_count; i++) {
403 int num = rfkill2[i].num;
404 struct bios_rfkill2_device_state *devstate;
405 devstate = &state.device[num];
406
407 if (num >= state.count ||
408 devstate->rfkill_id != rfkill2[i].id) {
409 pr_warn("power configuration of the wireless devices unexpectedly changed\n");
410 continue;
411 }
412
413 rfkill_set_states(rfkill2[i].rfkill,
414 IS_SWBLOCKED(devstate->power),
415 IS_HWBLOCKED(devstate->power));
416 }
417
418 return 0;
419}
420
421static ssize_t display_show(struct device *dev, struct device_attribute *attr,
422 char *buf)
423{
424 int value = hp_wmi_read_int(HPWMI_DISPLAY_QUERY);
425 if (value < 0)
426 return value;
427 return sprintf(buf, "%d\n", value);
428}
429
430static ssize_t hddtemp_show(struct device *dev, struct device_attribute *attr,
431 char *buf)
432{
433 int value = hp_wmi_read_int(HPWMI_HDDTEMP_QUERY);
434 if (value < 0)
435 return value;
436 return sprintf(buf, "%d\n", value);
437}
438
439static ssize_t als_show(struct device *dev, struct device_attribute *attr,
440 char *buf)
441{
442 int value = hp_wmi_read_int(HPWMI_ALS_QUERY);
443 if (value < 0)
444 return value;
445 return sprintf(buf, "%d\n", value);
446}
447
448static ssize_t dock_show(struct device *dev, struct device_attribute *attr,
449 char *buf)
450{
451 int value = hp_wmi_hw_state(HPWMI_DOCK_MASK);
452 if (value < 0)
453 return value;
454 return sprintf(buf, "%d\n", value);
455}
456
457static ssize_t tablet_show(struct device *dev, struct device_attribute *attr,
458 char *buf)
459{
460 int value = hp_wmi_hw_state(HPWMI_TABLET_MASK);
461 if (value < 0)
462 return value;
463 return sprintf(buf, "%d\n", value);
464}
465
466static ssize_t postcode_show(struct device *dev, struct device_attribute *attr,
467 char *buf)
468{
469 /* Get the POST error code of previous boot failure. */
470 int value = hp_wmi_read_int(HPWMI_POSTCODEERROR_QUERY);
471 if (value < 0)
472 return value;
473 return sprintf(buf, "0x%x\n", value);
474}
475
476static ssize_t als_store(struct device *dev, struct device_attribute *attr,
477 const char *buf, size_t count)
478{
479 u32 tmp;
480 int ret;
481
482 ret = kstrtou32(buf, 10, &tmp);
483 if (ret)
484 return ret;
485
486 ret = hp_wmi_perform_query(HPWMI_ALS_QUERY, HPWMI_WRITE, &tmp,
487 sizeof(tmp), sizeof(tmp));
488 if (ret)
489 return ret < 0 ? ret : -EINVAL;
490
491 return count;
492}
493
494static ssize_t postcode_store(struct device *dev, struct device_attribute *attr,
495 const char *buf, size_t count)
496{
497 u32 tmp = 1;
498 bool clear;
499 int ret;
500
501 ret = kstrtobool(buf, &clear);
502 if (ret)
503 return ret;
504
505 if (clear == false)
506 return -EINVAL;
507
508 /* Clear the POST error code. It is kept until until cleared. */
509 ret = hp_wmi_perform_query(HPWMI_POSTCODEERROR_QUERY, HPWMI_WRITE, &tmp,
510 sizeof(tmp), sizeof(tmp));
511 if (ret)
512 return ret < 0 ? ret : -EINVAL;
513
514 return count;
515}
516
517static DEVICE_ATTR_RO(display);
518static DEVICE_ATTR_RO(hddtemp);
519static DEVICE_ATTR_RW(als);
520static DEVICE_ATTR_RO(dock);
521static DEVICE_ATTR_RO(tablet);
522static DEVICE_ATTR_RW(postcode);
523
524static struct attribute *hp_wmi_attrs[] = {
525 &dev_attr_display.attr,
526 &dev_attr_hddtemp.attr,
527 &dev_attr_als.attr,
528 &dev_attr_dock.attr,
529 &dev_attr_tablet.attr,
530 &dev_attr_postcode.attr,
531 NULL,
532};
533ATTRIBUTE_GROUPS(hp_wmi);
534
535static void hp_wmi_notify(u32 value, void *context)
536{
537 struct acpi_buffer response = { ACPI_ALLOCATE_BUFFER, NULL };
538 u32 event_id, event_data;
539 union acpi_object *obj;
540 acpi_status status;
541 u32 *location;
542 int key_code;
543
544 status = wmi_get_event_data(value, &response);
545 if (status != AE_OK) {
546 pr_info("bad event status 0x%x\n", status);
547 return;
548 }
549
550 obj = (union acpi_object *)response.pointer;
551
552 if (!obj)
553 return;
554 if (obj->type != ACPI_TYPE_BUFFER) {
555 pr_info("Unknown response received %d\n", obj->type);
556 kfree(obj);
557 return;
558 }
559
560 /*
561 * Depending on ACPI version the concatenation of id and event data
562 * inside _WED function will result in a 8 or 16 byte buffer.
563 */
564 location = (u32 *)obj->buffer.pointer;
565 if (obj->buffer.length == 8) {
566 event_id = *location;
567 event_data = *(location + 1);
568 } else if (obj->buffer.length == 16) {
569 event_id = *location;
570 event_data = *(location + 2);
571 } else {
572 pr_info("Unknown buffer length %d\n", obj->buffer.length);
573 kfree(obj);
574 return;
575 }
576 kfree(obj);
577
578 switch (event_id) {
579 case HPWMI_DOCK_EVENT:
580 if (test_bit(SW_DOCK, hp_wmi_input_dev->swbit))
581 input_report_switch(hp_wmi_input_dev, SW_DOCK,
582 hp_wmi_hw_state(HPWMI_DOCK_MASK));
583 if (test_bit(SW_TABLET_MODE, hp_wmi_input_dev->swbit))
584 input_report_switch(hp_wmi_input_dev, SW_TABLET_MODE,
585 hp_wmi_hw_state(HPWMI_TABLET_MASK));
586 input_sync(hp_wmi_input_dev);
587 break;
588 case HPWMI_PARK_HDD:
589 break;
590 case HPWMI_SMART_ADAPTER:
591 break;
592 case HPWMI_BEZEL_BUTTON:
593 key_code = hp_wmi_read_int(HPWMI_HOTKEY_QUERY);
594 if (key_code < 0)
595 break;
596
597 if (!sparse_keymap_report_event(hp_wmi_input_dev,
598 key_code, 1, true))
599 pr_info("Unknown key code - 0x%x\n", key_code);
600 break;
601 case HPWMI_WIRELESS:
602 if (rfkill2_count) {
603 hp_wmi_rfkill2_refresh();
604 break;
605 }
606
607 if (wifi_rfkill)
608 rfkill_set_states(wifi_rfkill,
609 hp_wmi_get_sw_state(HPWMI_WIFI),
610 hp_wmi_get_hw_state(HPWMI_WIFI));
611 if (bluetooth_rfkill)
612 rfkill_set_states(bluetooth_rfkill,
613 hp_wmi_get_sw_state(HPWMI_BLUETOOTH),
614 hp_wmi_get_hw_state(HPWMI_BLUETOOTH));
615 if (wwan_rfkill)
616 rfkill_set_states(wwan_rfkill,
617 hp_wmi_get_sw_state(HPWMI_WWAN),
618 hp_wmi_get_hw_state(HPWMI_WWAN));
619 break;
620 case HPWMI_CPU_BATTERY_THROTTLE:
621 pr_info("Unimplemented CPU throttle because of 3 Cell battery event detected\n");
622 break;
623 case HPWMI_LOCK_SWITCH:
624 break;
625 case HPWMI_LID_SWITCH:
626 break;
627 case HPWMI_SCREEN_ROTATION:
628 break;
629 case HPWMI_COOLSENSE_SYSTEM_MOBILE:
630 break;
631 case HPWMI_COOLSENSE_SYSTEM_HOT:
632 break;
633 case HPWMI_PROXIMITY_SENSOR:
634 break;
635 case HPWMI_BACKLIT_KB_BRIGHTNESS:
636 break;
637 case HPWMI_PEAKSHIFT_PERIOD:
638 break;
639 case HPWMI_BATTERY_CHARGE_PERIOD:
640 break;
641 default:
642 pr_info("Unknown event_id - %d - 0x%x\n", event_id, event_data);
643 break;
644 }
645}
646
647static int __init hp_wmi_input_setup(void)
648{
649 acpi_status status;
650 int err, val;
651
652 hp_wmi_input_dev = input_allocate_device();
653 if (!hp_wmi_input_dev)
654 return -ENOMEM;
655
656 hp_wmi_input_dev->name = "HP WMI hotkeys";
657 hp_wmi_input_dev->phys = "wmi/input0";
658 hp_wmi_input_dev->id.bustype = BUS_HOST;
659
660 __set_bit(EV_SW, hp_wmi_input_dev->evbit);
661
662 /* Dock */
663 val = hp_wmi_hw_state(HPWMI_DOCK_MASK);
664 if (!(val < 0)) {
665 __set_bit(SW_DOCK, hp_wmi_input_dev->swbit);
666 input_report_switch(hp_wmi_input_dev, SW_DOCK, val);
667 }
668
669 /* Tablet mode */
670 if (enable_tablet_mode_sw > 0) {
671 val = hp_wmi_hw_state(HPWMI_TABLET_MASK);
672 if (val >= 0) {
673 __set_bit(SW_TABLET_MODE, hp_wmi_input_dev->swbit);
674 input_report_switch(hp_wmi_input_dev, SW_TABLET_MODE, val);
675 }
676 }
677
678 err = sparse_keymap_setup(hp_wmi_input_dev, hp_wmi_keymap, NULL);
679 if (err)
680 goto err_free_dev;
681
682 /* Set initial hardware state */
683 input_sync(hp_wmi_input_dev);
684
685 if (!hp_wmi_bios_2009_later() && hp_wmi_bios_2008_later())
686 hp_wmi_enable_hotkeys();
687
688 status = wmi_install_notify_handler(HPWMI_EVENT_GUID, hp_wmi_notify, NULL);
689 if (ACPI_FAILURE(status)) {
690 err = -EIO;
691 goto err_free_dev;
692 }
693
694 err = input_register_device(hp_wmi_input_dev);
695 if (err)
696 goto err_uninstall_notifier;
697
698 return 0;
699
700 err_uninstall_notifier:
701 wmi_remove_notify_handler(HPWMI_EVENT_GUID);
702 err_free_dev:
703 input_free_device(hp_wmi_input_dev);
704 return err;
705}
706
707static void hp_wmi_input_destroy(void)
708{
709 wmi_remove_notify_handler(HPWMI_EVENT_GUID);
710 input_unregister_device(hp_wmi_input_dev);
711}
712
713static int __init hp_wmi_rfkill_setup(struct platform_device *device)
714{
715 int err, wireless;
716
717 wireless = hp_wmi_read_int(HPWMI_WIRELESS_QUERY);
718 if (wireless < 0)
719 return wireless;
720
721 err = hp_wmi_perform_query(HPWMI_WIRELESS_QUERY, HPWMI_WRITE, &wireless,
722 sizeof(wireless), 0);
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_bluetooth_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_wwan_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 return 0;
779
780register_wwan_error:
781 rfkill_destroy(wwan_rfkill);
782 wwan_rfkill = NULL;
783 if (bluetooth_rfkill)
784 rfkill_unregister(bluetooth_rfkill);
785register_bluetooth_error:
786 rfkill_destroy(bluetooth_rfkill);
787 bluetooth_rfkill = NULL;
788 if (wifi_rfkill)
789 rfkill_unregister(wifi_rfkill);
790register_wifi_error:
791 rfkill_destroy(wifi_rfkill);
792 wifi_rfkill = NULL;
793 return err;
794}
795
796static int __init hp_wmi_rfkill2_setup(struct platform_device *device)
797{
798 struct bios_rfkill2_state state;
799 int err, i;
800
801 err = hp_wmi_perform_query(HPWMI_WIRELESS2_QUERY, HPWMI_READ, &state,
802 sizeof(state), sizeof(state));
803 if (err)
804 return err < 0 ? err : -EINVAL;
805
806 if (state.count > HPWMI_MAX_RFKILL2_DEVICES) {
807 pr_warn("unable to parse 0x1b query output\n");
808 return -EINVAL;
809 }
810
811 for (i = 0; i < state.count; i++) {
812 struct rfkill *rfkill;
813 enum rfkill_type type;
814 char *name;
815 switch (state.device[i].radio_type) {
816 case HPWMI_WIFI:
817 type = RFKILL_TYPE_WLAN;
818 name = "hp-wifi";
819 break;
820 case HPWMI_BLUETOOTH:
821 type = RFKILL_TYPE_BLUETOOTH;
822 name = "hp-bluetooth";
823 break;
824 case HPWMI_WWAN:
825 type = RFKILL_TYPE_WWAN;
826 name = "hp-wwan";
827 break;
828 case HPWMI_GPS:
829 type = RFKILL_TYPE_GPS;
830 name = "hp-gps";
831 break;
832 default:
833 pr_warn("unknown device type 0x%x\n",
834 state.device[i].radio_type);
835 continue;
836 }
837
838 if (!state.device[i].vendor_id) {
839 pr_warn("zero device %d while %d reported\n",
840 i, state.count);
841 continue;
842 }
843
844 rfkill = rfkill_alloc(name, &device->dev, type,
845 &hp_wmi_rfkill2_ops, (void *)(long)i);
846 if (!rfkill) {
847 err = -ENOMEM;
848 goto fail;
849 }
850
851 rfkill2[rfkill2_count].id = state.device[i].rfkill_id;
852 rfkill2[rfkill2_count].num = i;
853 rfkill2[rfkill2_count].rfkill = rfkill;
854
855 rfkill_init_sw_state(rfkill,
856 IS_SWBLOCKED(state.device[i].power));
857 rfkill_set_hw_state(rfkill,
858 IS_HWBLOCKED(state.device[i].power));
859
860 if (!(state.device[i].power & HPWMI_POWER_BIOS))
861 pr_info("device %s blocked by BIOS\n", name);
862
863 err = rfkill_register(rfkill);
864 if (err) {
865 rfkill_destroy(rfkill);
866 goto fail;
867 }
868
869 rfkill2_count++;
870 }
871
872 return 0;
873fail:
874 for (; rfkill2_count > 0; rfkill2_count--) {
875 rfkill_unregister(rfkill2[rfkill2_count - 1].rfkill);
876 rfkill_destroy(rfkill2[rfkill2_count - 1].rfkill);
877 }
878 return err;
879}
880
881static int thermal_profile_get(void)
882{
883 return hp_wmi_read_int(HPWMI_THERMAL_PROFILE_QUERY);
884}
885
886static int thermal_profile_set(int thermal_profile)
887{
888 return hp_wmi_perform_query(HPWMI_THERMAL_PROFILE_QUERY, HPWMI_WRITE, &thermal_profile,
889 sizeof(thermal_profile), 0);
890}
891
892static int platform_profile_get(struct platform_profile_handler *pprof,
893 enum platform_profile_option *profile)
894{
895 int tp;
896
897 tp = thermal_profile_get();
898 if (tp < 0)
899 return tp;
900
901 switch (tp) {
902 case HP_THERMAL_PROFILE_PERFORMANCE:
903 *profile = PLATFORM_PROFILE_PERFORMANCE;
904 break;
905 case HP_THERMAL_PROFILE_DEFAULT:
906 *profile = PLATFORM_PROFILE_BALANCED;
907 break;
908 case HP_THERMAL_PROFILE_COOL:
909 *profile = PLATFORM_PROFILE_COOL;
910 break;
911 default:
912 return -EINVAL;
913 }
914
915 return 0;
916}
917
918static int platform_profile_set(struct platform_profile_handler *pprof,
919 enum platform_profile_option profile)
920{
921 int err, tp;
922
923 switch (profile) {
924 case PLATFORM_PROFILE_PERFORMANCE:
925 tp = HP_THERMAL_PROFILE_PERFORMANCE;
926 break;
927 case PLATFORM_PROFILE_BALANCED:
928 tp = HP_THERMAL_PROFILE_DEFAULT;
929 break;
930 case PLATFORM_PROFILE_COOL:
931 tp = HP_THERMAL_PROFILE_COOL;
932 break;
933 default:
934 return -EOPNOTSUPP;
935 }
936
937 err = thermal_profile_set(tp);
938 if (err)
939 return err;
940
941 return 0;
942}
943
944static int thermal_profile_setup(void)
945{
946 int err, tp;
947
948 tp = thermal_profile_get();
949 if (tp < 0)
950 return tp;
951
952 /*
953 * call thermal profile write command to ensure that the firmware correctly
954 * sets the OEM variables for the DPTF
955 */
956 err = thermal_profile_set(tp);
957 if (err)
958 return err;
959
960 platform_profile_handler.profile_get = platform_profile_get,
961 platform_profile_handler.profile_set = platform_profile_set,
962
963 set_bit(PLATFORM_PROFILE_COOL, platform_profile_handler.choices);
964 set_bit(PLATFORM_PROFILE_BALANCED, platform_profile_handler.choices);
965 set_bit(PLATFORM_PROFILE_PERFORMANCE, platform_profile_handler.choices);
966
967 err = platform_profile_register(&platform_profile_handler);
968 if (err)
969 return err;
970
971 platform_profile_support = true;
972
973 return 0;
974}
975
976static int __init hp_wmi_bios_setup(struct platform_device *device)
977{
978 /* clear detected rfkill devices */
979 wifi_rfkill = NULL;
980 bluetooth_rfkill = NULL;
981 wwan_rfkill = NULL;
982 rfkill2_count = 0;
983
984 if (hp_wmi_rfkill_setup(device))
985 hp_wmi_rfkill2_setup(device);
986
987 thermal_profile_setup();
988
989 return 0;
990}
991
992static int __exit hp_wmi_bios_remove(struct platform_device *device)
993{
994 int i;
995
996 for (i = 0; i < rfkill2_count; i++) {
997 rfkill_unregister(rfkill2[i].rfkill);
998 rfkill_destroy(rfkill2[i].rfkill);
999 }
1000
1001 if (wifi_rfkill) {
1002 rfkill_unregister(wifi_rfkill);
1003 rfkill_destroy(wifi_rfkill);
1004 }
1005 if (bluetooth_rfkill) {
1006 rfkill_unregister(bluetooth_rfkill);
1007 rfkill_destroy(bluetooth_rfkill);
1008 }
1009 if (wwan_rfkill) {
1010 rfkill_unregister(wwan_rfkill);
1011 rfkill_destroy(wwan_rfkill);
1012 }
1013
1014 if (platform_profile_support)
1015 platform_profile_remove();
1016
1017 return 0;
1018}
1019
1020static int hp_wmi_resume_handler(struct device *device)
1021{
1022 /*
1023 * Hardware state may have changed while suspended, so trigger
1024 * input events for the current state. As this is a switch,
1025 * the input layer will only actually pass it on if the state
1026 * changed.
1027 */
1028 if (hp_wmi_input_dev) {
1029 if (test_bit(SW_DOCK, hp_wmi_input_dev->swbit))
1030 input_report_switch(hp_wmi_input_dev, SW_DOCK,
1031 hp_wmi_hw_state(HPWMI_DOCK_MASK));
1032 if (test_bit(SW_TABLET_MODE, hp_wmi_input_dev->swbit))
1033 input_report_switch(hp_wmi_input_dev, SW_TABLET_MODE,
1034 hp_wmi_hw_state(HPWMI_TABLET_MASK));
1035 input_sync(hp_wmi_input_dev);
1036 }
1037
1038 if (rfkill2_count)
1039 hp_wmi_rfkill2_refresh();
1040
1041 if (wifi_rfkill)
1042 rfkill_set_states(wifi_rfkill,
1043 hp_wmi_get_sw_state(HPWMI_WIFI),
1044 hp_wmi_get_hw_state(HPWMI_WIFI));
1045 if (bluetooth_rfkill)
1046 rfkill_set_states(bluetooth_rfkill,
1047 hp_wmi_get_sw_state(HPWMI_BLUETOOTH),
1048 hp_wmi_get_hw_state(HPWMI_BLUETOOTH));
1049 if (wwan_rfkill)
1050 rfkill_set_states(wwan_rfkill,
1051 hp_wmi_get_sw_state(HPWMI_WWAN),
1052 hp_wmi_get_hw_state(HPWMI_WWAN));
1053
1054 return 0;
1055}
1056
1057static const struct dev_pm_ops hp_wmi_pm_ops = {
1058 .resume = hp_wmi_resume_handler,
1059 .restore = hp_wmi_resume_handler,
1060};
1061
1062static struct platform_driver hp_wmi_driver = {
1063 .driver = {
1064 .name = "hp-wmi",
1065 .pm = &hp_wmi_pm_ops,
1066 .dev_groups = hp_wmi_groups,
1067 },
1068 .remove = __exit_p(hp_wmi_bios_remove),
1069};
1070
1071static int __init hp_wmi_init(void)
1072{
1073 int event_capable = wmi_has_guid(HPWMI_EVENT_GUID);
1074 int bios_capable = wmi_has_guid(HPWMI_BIOS_GUID);
1075 int err;
1076
1077 if (!bios_capable && !event_capable)
1078 return -ENODEV;
1079
1080 if (event_capable) {
1081 err = hp_wmi_input_setup();
1082 if (err)
1083 return err;
1084 }
1085
1086 if (bios_capable) {
1087 hp_wmi_platform_dev =
1088 platform_device_register_simple("hp-wmi", -1, NULL, 0);
1089 if (IS_ERR(hp_wmi_platform_dev)) {
1090 err = PTR_ERR(hp_wmi_platform_dev);
1091 goto err_destroy_input;
1092 }
1093
1094 err = platform_driver_probe(&hp_wmi_driver, hp_wmi_bios_setup);
1095 if (err)
1096 goto err_unregister_device;
1097 }
1098
1099 return 0;
1100
1101err_unregister_device:
1102 platform_device_unregister(hp_wmi_platform_dev);
1103err_destroy_input:
1104 if (event_capable)
1105 hp_wmi_input_destroy();
1106
1107 return err;
1108}
1109module_init(hp_wmi_init);
1110
1111static void __exit hp_wmi_exit(void)
1112{
1113 if (wmi_has_guid(HPWMI_EVENT_GUID))
1114 hp_wmi_input_destroy();
1115
1116 if (hp_wmi_platform_dev) {
1117 platform_device_unregister(hp_wmi_platform_dev);
1118 platform_driver_unregister(&hp_wmi_driver);
1119 }
1120}
1121module_exit(hp_wmi_exit);