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Merge tag 'for-linus-20160523' of git://git.infradead.org/linux-mtd
[deliverable/linux.git] / drivers / platform / x86 / hp-wmi.c
CommitLineData
62ec30d4
MG		 1/*
2 * HP WMI hotkeys
3 *
4 * Copyright (C) 2008 Red Hat <mjg@redhat.com>
c0b9c649 5 * Copyright (C) 2010, 2011 Anssi Hannula <anssi.hannula@iki.fi>
62ec30d4
MG		 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
b5a4223c
JP		 27#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
28
62ec30d4
MG		 29#include <linux/kernel.h>
30#include <linux/module.h>
31#include <linux/init.h>
5a0e3ad6 32#include <linux/slab.h>
62ec30d4
MG		 33#include <linux/types.h>
34#include <linux/input.h>
4d291ed7 35#include <linux/input/sparse-keymap.h>
62ec30d4
MG		 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
871043bc 54#define HPWMI_HARDWARE_QUERY 0x4
62ec30d4 55#define HPWMI_WIRELESS_QUERY 0x5
f82bdd0d 56#define HPWMI_BIOS_QUERY 0x9
8a1513b4 57#define HPWMI_FEATURE_QUERY 0xb
a8823aef 58#define HPWMI_HOTKEY_QUERY 0xc
8a1513b4 59#define HPWMI_FEATURE2_QUERY 0xd
c0b9c649 60#define HPWMI_WIRELESS2_QUERY 0x1b
8667ca95 61#define HPWMI_POSTCODEERROR_QUERY 0x2a
62ec30d4 62
e5fbba85
AJ		 63enum hp_wmi_radio {
64 HPWMI_WIFI = 0,
65 HPWMI_BLUETOOTH = 1,
66 HPWMI_WWAN = 2,
4fca7ce3 67 HPWMI_GPS = 3,
e5fbba85
AJ		 68};
69
751ae808
TR		 70enum hp_wmi_event_ids {
71 HPWMI_DOCK_EVENT = 1,
1bbdfd59
TR		 72 HPWMI_PARK_HDD = 2,
73 HPWMI_SMART_ADAPTER = 3,
751ae808
TR		 74 HPWMI_BEZEL_BUTTON = 4,
75 HPWMI_WIRELESS = 5,
1bbdfd59
TR		 76 HPWMI_CPU_BATTERY_THROTTLE = 6,
77 HPWMI_LOCK_SWITCH = 7,
d9e290a0
AH		 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,
751ae808
TR		 86};
87
62ec30d4
MG		 88struct bios_args {
89 u32 signature;
90 u32 command;
91 u32 commandtype;
92 u32 datasize;
a8ec105c 93 u32 data;
62ec30d4
MG		 94};
95
96struct bios_return {
97 u32 sigpass;
98 u32 return_code;
62ec30d4
MG		 99};
100
9af0e0fb
AH		 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
c0b9c649
AH		 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
4d291ed7
DT		 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 } },
e92865ed 148 { KE_KEY, 0x2169, { KEY_ROTATE_DISPLAY } },
f82bdd0d 149 { KE_KEY, 0x216a, { KEY_SETUP } },
4d291ed7
DT		 150 { KE_KEY, 0x231b, { KEY_HELP } },
151 { KE_END, 0 }
62ec30d4
MG		 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
c0b9c649
AH		 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
6d96e00c
TR		 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
c3021ea1
AH		 176 * insize: Size of input buffer
177 * outsize: Size of output buffer
6d96e00c
TR		 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);
c3021ea1 188 * ret = hp_wmi_perform_query(0x7, 0, buffer, 1, 128)
6d96e00c 189 */
c3021ea1
AH		 190static int hp_wmi_perform_query(int query, int write, void *buffer,
191 int insize, int outsize)
62ec30d4 192{
c3021ea1
AH		 193 struct bios_return *bios_return;
194 int actual_outsize;
62ec30d4
MG		 195 union acpi_object *obj;
196 struct bios_args args = {
197 .signature = 0x55434553,
198 .command = write ? 0x2 : 0x1,
199 .commandtype = query,
c3021ea1
AH		 200 .datasize = insize,
201 .data = 0,
62ec30d4
MG		 202 };
203 struct acpi_buffer input = { sizeof(struct bios_args), &args };
204 struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
0401846c 205 u32 rc;
62ec30d4 206
c3021ea1
AH		 207 if (WARN_ON(insize > sizeof(args.data)))
208 return -EINVAL;
209 memcpy(&args.data, buffer, insize);
210
25bb067a 211 wmi_evaluate_method(HPWMI_BIOS_GUID, 0, 0x3, &input, &output);
62ec30d4
MG		 212
213 obj = output.pointer;
214
44ef00e6 215 if (!obj)
62ec30d4 216 return -EINVAL;
44ef00e6
TR		 217 else if (obj->type != ACPI_TYPE_BUFFER) {
218 kfree(obj);
219 return -EINVAL;
220 }
62ec30d4 221
c3021ea1 222 bios_return = (struct bios_return *)obj->buffer.pointer;
0401846c 223 rc = bios_return->return_code;
6d96e00c 224
0401846c
ED		 225 if (rc) {
226 if (rc != HPWMI_RET_UNKNOWN_CMDTYPE)
227 pr_warn("query 0x%x returned error 0x%x\n", query, rc);
9af0e0fb 228 kfree(obj);
0401846c 229 return rc;
9af0e0fb
AH		 230 }
231
c3021ea1
AH		 232 if (!outsize) {
233 /* ignore output data */
234 kfree(obj);
235 return 0;
236 }
53c96dfd 237
c3021ea1
AH		 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);
53c96dfd 241 kfree(obj);
6d96e00c 242 return 0;
62ec30d4
MG		 243}
244
245static int hp_wmi_display_state(void)
246{
a8ec105c
MG		 247 int state = 0;
248 int ret = hp_wmi_perform_query(HPWMI_DISPLAY_QUERY, 0, &state,
c3021ea1 249 sizeof(state), sizeof(state));
6d96e00c
TR		 250 if (ret)
251 return -EINVAL;
252 return state;
62ec30d4
MG		 253}
254
255static int hp_wmi_hddtemp_state(void)
256{
a8ec105c
MG		 257 int state = 0;
258 int ret = hp_wmi_perform_query(HPWMI_HDDTEMP_QUERY, 0, &state,
c3021ea1 259 sizeof(state), sizeof(state));
6d96e00c
TR		 260 if (ret)
261 return -EINVAL;
262 return state;
62ec30d4
MG		 263}
264
265static int hp_wmi_als_state(void)
266{
a8ec105c
MG		 267 int state = 0;
268 int ret = hp_wmi_perform_query(HPWMI_ALS_QUERY, 0, &state,
c3021ea1 269 sizeof(state), sizeof(state));
6d96e00c
TR		 270 if (ret)
271 return -EINVAL;
272 return state;
62ec30d4
MG		 273}
274
275static int hp_wmi_dock_state(void)
276{
a8ec105c
MG		 277 int state = 0;
278 int ret = hp_wmi_perform_query(HPWMI_HARDWARE_QUERY, 0, &state,
c3021ea1 279 sizeof(state), sizeof(state));
62ec30d4 280
6d96e00c
TR		 281 if (ret)
282 return -EINVAL;
871043bc 283
6d96e00c 284 return state & 0x1;
62ec30d4
MG		 285}
286
871043bc 287static int hp_wmi_tablet_state(void)
62ec30d4 288{
a8ec105c
MG		 289 int state = 0;
290 int ret = hp_wmi_perform_query(HPWMI_HARDWARE_QUERY, 0, &state,
c3021ea1 291 sizeof(state), sizeof(state));
6d96e00c 292 if (ret)
871043bc
MG		 293 return ret;
294
6d96e00c 295 return (state & 0x4) ? 1 : 0;
62ec30d4
MG		 296}
297
8a1513b4 298static int __init hp_wmi_bios_2008_later(void)
997daa1b
AH		 299{
300 int state = 0;
301 int ret = hp_wmi_perform_query(HPWMI_FEATURE_QUERY, 0, &state,
302 sizeof(state), sizeof(state));
8a1513b4
KE		 303 if (!ret)
304 return 1;
997daa1b 305
8a1513b4 306 return (ret == HPWMI_RET_UNKNOWN_CMDTYPE) ? 0 : -ENXIO;
997daa1b
AH		 307}
308
8a1513b4 309static int __init hp_wmi_bios_2009_later(void)
f82bdd0d 310{
8a1513b4
KE		 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;
f82bdd0d 316
8a1513b4
KE		 317 return (ret == HPWMI_RET_UNKNOWN_CMDTYPE) ? 0 : -ENXIO;
318}
f82bdd0d 319
8a1513b4
KE		 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);
f82bdd0d
KE		 325 if (ret)
326 return -EINVAL;
327 return 0;
328}
329
19d337df 330static int hp_wmi_set_block(void *data, bool blocked)
62ec30d4 331{
e5fbba85
AJ		 332 enum hp_wmi_radio r = (enum hp_wmi_radio) data;
333 int query = BIT(r + 8) | ((!blocked) << r);
6d96e00c 334 int ret;
62ec30d4 335
6d96e00c 336 ret = hp_wmi_perform_query(HPWMI_WIRELESS_QUERY, 1,
c3021ea1 337 &query, sizeof(query), 0);
6d96e00c
TR		 338 if (ret)
339 return -EINVAL;
340 return 0;
62ec30d4
MG		 341}
342
19d337df
JB		 343static const struct rfkill_ops hp_wmi_rfkill_ops = {
344 .set_block = hp_wmi_set_block,
345};
62ec30d4 346
e5fbba85 347static bool hp_wmi_get_sw_state(enum hp_wmi_radio r)
62ec30d4 348{
a8ec105c 349 int wireless = 0;
6d96e00c
TR		 350 int mask;
351 hp_wmi_perform_query(HPWMI_WIRELESS_QUERY, 0,
c3021ea1
AH		 352 &wireless, sizeof(wireless),
353 sizeof(wireless));
6d96e00c
TR		 354 /* TBD: Pass error */
355
356 mask = 0x200 << (r * 8);
62ec30d4 357
e5fbba85 358 if (wireless & mask)
19d337df 359 return false;
62ec30d4 360 else
19d337df 361 return true;
62ec30d4
MG		 362}
363
e5fbba85 364static bool hp_wmi_get_hw_state(enum hp_wmi_radio r)
62ec30d4 365{
a8ec105c 366 int wireless = 0;
6d96e00c
TR		 367 int mask;
368 hp_wmi_perform_query(HPWMI_WIRELESS_QUERY, 0,
c3021ea1
AH		 369 &wireless, sizeof(wireless),
370 sizeof(wireless));
6d96e00c
TR		 371 /* TBD: Pass error */
372
373 mask = 0x800 << (r * 8);
62ec30d4 374
e5fbba85 375 if (wireless & mask)
19d337df 376 return false;
62ec30d4 377 else
19d337df 378 return true;
62ec30d4
MG		 379}
380
c0b9c649
AH		 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) {
b5a4223c 413 pr_warn("power configuration of the wireless devices unexpectedly changed\n");
c0b9c649
AH		 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
8667ca95
AH		 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
62ec30d4
MG		 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
871043bc
MG		 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
8667ca95
AH		 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
62ec30d4
MG		 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);
a8ec105c 494 int ret = hp_wmi_perform_query(HPWMI_ALS_QUERY, 1, &tmp,
c3021ea1 495 sizeof(tmp), sizeof(tmp));
6d96e00c
TR		 496 if (ret)
497 return -EINVAL;
498
62ec30d4
MG		 499 return count;
500}
501
8667ca95
AH		 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
62ec30d4
MG		 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);
871043bc 527static DEVICE_ATTR(tablet, S_IRUGO, show_tablet, NULL);
8667ca95 528static DEVICE_ATTR(postcode, S_IRUGO | S_IWUSR, show_postcode, set_postcode);
62ec30d4 529
88429a10 530static void hp_wmi_notify(u32 value, void *context)
62ec30d4
MG		 531{
532 struct acpi_buffer response = { ACPI_ALLOCATE_BUFFER, NULL };
62ec30d4 533 union acpi_object *obj;
8dda6b04 534 u32 event_id, event_data;
a8ec105c 535 int key_code = 0, ret;
8dda6b04 536 u32 *location;
fda11e61 537 acpi_status status;
62ec30d4 538
fda11e61
LB		 539 status = wmi_get_event_data(value, &response);
540 if (status != AE_OK) {
b5a4223c 541 pr_info("bad event status 0x%x\n", status);
fda11e61
LB		 542 return;
543 }
62ec30d4
MG		 544
545 obj = (union acpi_object *)response.pointer;
546
c4775062
TR		 547 if (!obj)
548 return;
549 if (obj->type != ACPI_TYPE_BUFFER) {
b5a4223c 550 pr_info("Unknown response received %d\n", obj->type);
44ef00e6 551 kfree(obj);
e5fbba85
AJ		 552 return;
553 }
554
8dda6b04
TR		 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 {
b5a4223c 567 pr_info("Unknown buffer length %d\n", obj->buffer.length);
8dda6b04
TR		 568 kfree(obj);
569 return;
570 }
44ef00e6 571 kfree(obj);
8dda6b04
TR		 572
573 switch (event_id) {
751ae808 574 case HPWMI_DOCK_EVENT:
e5fbba85
AJ		 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);
751ae808 580 break;
1bbdfd59
TR		 581 case HPWMI_PARK_HDD:
582 break;
583 case HPWMI_SMART_ADAPTER:
584 break;
751ae808 585 case HPWMI_BEZEL_BUTTON:
6d96e00c 586 ret = hp_wmi_perform_query(HPWMI_HOTKEY_QUERY, 0,
a8ec105c 587 &key_code,
c3021ea1 588 sizeof(key_code),
6d96e00c
TR		 589 sizeof(key_code));
590 if (ret)
591 break;
4d291ed7
DT		 592
593 if (!sparse_keymap_report_event(hp_wmi_input_dev,
594 key_code, 1, true))
b5a4223c 595 pr_info("Unknown key code - 0x%x\n", key_code);
751ae808
TR		 596 break;
597 case HPWMI_WIRELESS:
c0b9c649
AH		 598 if (rfkill2_count) {
599 hp_wmi_rfkill2_refresh();
600 break;
601 }
602
e5fbba85
AJ		 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));
751ae808 615 break;
1bbdfd59 616 case HPWMI_CPU_BATTERY_THROTTLE:
b5a4223c 617 pr_info("Unimplemented CPU throttle because of 3 Cell battery event detected\n");
1bbdfd59
TR		 618 break;
619 case HPWMI_LOCK_SWITCH:
620 break;
d9e290a0
AH		 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;
751ae808 637 default:
b5a4223c 638 pr_info("Unknown event_id - %d - 0x%x\n", event_id, event_data);
751ae808
TR		 639 break;
640 }
62ec30d4
MG		 641}
642
643static int __init hp_wmi_input_setup(void)
644{
4d291ed7 645 acpi_status status;
62ec30d4
MG		 646 int err;
647
648 hp_wmi_input_dev = input_allocate_device();
bc28596a
AL		 649 if (!hp_wmi_input_dev)
650 return -ENOMEM;
62ec30d4
MG		 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;
62ec30d4 655
4d291ed7
DT		 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;
871043bc
MG		 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
8a1513b4 670 if (!hp_wmi_bios_2009_later() && hp_wmi_bios_2008_later())
f82bdd0d
KE		 671 hp_wmi_enable_hotkeys();
672
4d291ed7
DT		 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;
62ec30d4
MG		 677 }
678
4d291ed7
DT		 679 err = input_register_device(hp_wmi_input_dev);
680 if (err)
681 goto err_uninstall_notifier;
682
62ec30d4 683 return 0;
4d291ed7
DT		 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);
62ec30d4
MG		 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);
871043bc 707 device_remove_file(&device->dev, &dev_attr_tablet);
8667ca95 708 device_remove_file(&device->dev, &dev_attr_postcode);
62ec30d4
MG		 709}
710
702ef542 711static int __init hp_wmi_rfkill_setup(struct platform_device *device)
62ec30d4
MG		 712{
713 int err;
a8ec105c 714 int wireless = 0;
6d96e00c 715
a8ec105c 716 err = hp_wmi_perform_query(HPWMI_WIRELESS_QUERY, 0, &wireless,
c3021ea1 717 sizeof(wireless), sizeof(wireless));
6d96e00c
TR		 718 if (err)
719 return err;
62ec30d4 720
3f6e2f13 721 if (wireless & 0x1) {
19d337df
JB		 722 wifi_rfkill = rfkill_alloc("hp-wifi", &device->dev,
723 RFKILL_TYPE_WLAN,
724 &hp_wmi_rfkill_ops,
e5fbba85 725 (void *) HPWMI_WIFI);
dd258c00
DC		 726 if (!wifi_rfkill)
727 return -ENOMEM;
e5fbba85
AJ		 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));
fe8e4e03
LF		 732 err = rfkill_register(wifi_rfkill);
733 if (err)
19d337df 734 goto register_wifi_error;
3f6e2f13
MG		 735 }
736
737 if (wireless & 0x2) {
19d337df
JB		 738 bluetooth_rfkill = rfkill_alloc("hp-bluetooth", &device->dev,
739 RFKILL_TYPE_BLUETOOTH,
740 &hp_wmi_rfkill_ops,
e5fbba85 741 (void *) HPWMI_BLUETOOTH);
dd258c00
DC		 742 if (!bluetooth_rfkill) {
743 err = -ENOMEM;
c7805e54 744 goto register_bluetooth_error;
dd258c00 745 }
e5fbba85
AJ		 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));
fe8e4e03 750 err = rfkill_register(bluetooth_rfkill);
6989d565 751 if (err)
fe8e4e03 752 goto register_bluetooth_error;
3f6e2f13
MG		 753 }
754
755 if (wireless & 0x4) {
19d337df
JB		 756 wwan_rfkill = rfkill_alloc("hp-wwan", &device->dev,
757 RFKILL_TYPE_WWAN,
758 &hp_wmi_rfkill_ops,
e5fbba85 759 (void *) HPWMI_WWAN);
dd258c00
DC		 760 if (!wwan_rfkill) {
761 err = -ENOMEM;
c7805e54 762 goto register_wwan_error;
dd258c00 763 }
e5fbba85
AJ		 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));
fe8e4e03
LF		 768 err = rfkill_register(wwan_rfkill);
769 if (err)
5b5c2b3c 770 goto register_wwan_error;
3f6e2f13 771 }
62ec30d4
MG		 772
773 return 0;
fffcad87 774
5b5c2b3c
KT		 775register_wwan_error:
776 rfkill_destroy(wwan_rfkill);
777 wwan_rfkill = NULL;
c7805e54
MS		 778 if (bluetooth_rfkill)
779 rfkill_unregister(bluetooth_rfkill);
fe8e4e03 780register_bluetooth_error:
19d337df 781 rfkill_destroy(bluetooth_rfkill);
6d97db59 782 bluetooth_rfkill = NULL;
44f0606d
AM		 783 if (wifi_rfkill)
784 rfkill_unregister(wifi_rfkill);
19d337df
JB		 785register_wifi_error:
786 rfkill_destroy(wifi_rfkill);
6d97db59 787 wifi_rfkill = NULL;
eceb7bdf
AH		 788 return err;
789}
790
702ef542 791static int __init hp_wmi_rfkill2_setup(struct platform_device *device)
c0b9c649
AH		 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) {
b5a4223c 801 pr_warn("unable to parse 0x1b query output\n");
c0b9c649
AH		 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;
4fca7ce3
TV		 822 case HPWMI_GPS:
823 type = RFKILL_TYPE_GPS;
824 name = "hp-gps";
825 break;
c0b9c649 826 default:
b5a4223c
JP		 827 pr_warn("unknown device type 0x%x\n",
828 state.device[i].radio_type);
c0b9c649
AH		 829 continue;
830 }
831
832 if (!state.device[i].vendor_id) {
b5a4223c
JP		 833 pr_warn("zero device %d while %d reported\n",
834 i, state.count);
c0b9c649
AH		 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))
b5a4223c 855 pr_info("device %s blocked by BIOS\n", name);
c0b9c649
AH		 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
c165b80c 875static int __init hp_wmi_bios_setup(struct platform_device *device)
eceb7bdf
AH		 876{
877 int err;
878
6d97db59
AH		 879 /* clear detected rfkill devices */
880 wifi_rfkill = NULL;
881 bluetooth_rfkill = NULL;
882 wwan_rfkill = NULL;
c0b9c649 883 rfkill2_count = 0;
6d97db59 884
997daa1b 885 if (hp_wmi_bios_2009_later() || hp_wmi_rfkill_setup(device))
c0b9c649 886 hp_wmi_rfkill2_setup(device);
eceb7bdf
AH		 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);
8667ca95
AH		 901 if (err)
902 goto add_sysfs_error;
903 err = device_create_file(&device->dev, &dev_attr_postcode);
eceb7bdf
AH		 904 if (err)
905 goto add_sysfs_error;
906 return 0;
907
62ec30d4
MG		 908add_sysfs_error:
909 cleanup_sysfs(device);
910 return err;
911}
912
913static int __exit hp_wmi_bios_remove(struct platform_device *device)
914{
c0b9c649 915 int i;
62ec30d4
MG		 916 cleanup_sysfs(device);
917
c0b9c649
AH		 918 for (i = 0; i < rfkill2_count; i++) {
919 rfkill_unregister(rfkill2[i].rfkill);
920 rfkill_destroy(rfkill2[i].rfkill);
921 }
922
19d337df 923 if (wifi_rfkill) {
3f6e2f13 924 rfkill_unregister(wifi_rfkill);
19d337df
JB		 925 rfkill_destroy(wifi_rfkill);
926 }
927 if (bluetooth_rfkill) {
3f6e2f13 928 rfkill_unregister(bluetooth_rfkill);
09729f0b 929 rfkill_destroy(bluetooth_rfkill);
19d337df
JB		 930 }
931 if (wwan_rfkill) {
3f6e2f13 932 rfkill_unregister(wwan_rfkill);
19d337df
JB		 933 rfkill_destroy(wwan_rfkill);
934 }
62ec30d4
MG		 935
936 return 0;
937}
938
8dd2b426 939static int hp_wmi_resume_handler(struct device *device)
4c395bdd 940{
4c395bdd 941 /*
871043bc
MG		 942 * Hardware state may have changed while suspended, so trigger
943 * input events for the current state. As this is a switch,
4c395bdd
FP		 944 * the input layer will only actually pass it on if the state
945 * changed.
946 */
daed9537
FP		 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 }
4c395bdd 954
c0b9c649
AH		 955 if (rfkill2_count)
956 hp_wmi_rfkill2_refresh();
957
e5fbba85
AJ		 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
4c395bdd
FP		 971 return 0;
972}
973
c165b80c
DT		 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",
c165b80c
DT		 982 .pm = &hp_wmi_pm_ops,
983 },
984 .remove = __exit_p(hp_wmi_bios_remove),
985};
986
62ec30d4
MG		 987static int __init hp_wmi_init(void)
988{
989 int err;
b096667b
TR		 990 int event_capable = wmi_has_guid(HPWMI_EVENT_GUID);
991 int bios_capable = wmi_has_guid(HPWMI_BIOS_GUID);
62ec30d4 992
c165b80c
DT		 993 if (!bios_capable && !event_capable)
994 return -ENODEV;
995
b096667b 996 if (event_capable) {
dfec5c48 997 err = hp_wmi_input_setup();
4d291ed7 998 if (err)
dfec5c48 999 return err;
62ec30d4
MG		 1000 }
1001
b096667b 1002 if (bios_capable) {
c165b80c
DT		 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;
62ec30d4 1008 }
c165b80c
DT		 1009
1010 err = platform_driver_probe(&hp_wmi_driver, hp_wmi_bios_setup);
dfec5c48 1011 if (err)
c165b80c 1012 goto err_unregister_device;
62ec30d4
MG		 1013 }
1014
1015 return 0;
dfec5c48 1016
c165b80c
DT		 1017err_unregister_device:
1018 platform_device_unregister(hp_wmi_platform_dev);
1019err_destroy_input:
4d291ed7
DT		 1020 if (event_capable)
1021 hp_wmi_input_destroy();
dfec5c48
AL		 1022
1023 return err;
62ec30d4 1024}
c165b80c 1025module_init(hp_wmi_init);
62ec30d4
MG		 1026
1027static void __exit hp_wmi_exit(void)
1028{
4d291ed7
DT		 1029 if (wmi_has_guid(HPWMI_EVENT_GUID))
1030 hp_wmi_input_destroy();
1031
62ec30d4 1032 if (hp_wmi_platform_dev) {
97ba0af0 1033 platform_device_unregister(hp_wmi_platform_dev);
62ec30d4
MG		 1034 platform_driver_unregister(&hp_wmi_driver);
1035 }
1036}
62ec30d4 1037module_exit(hp_wmi_exit);
Linux kernel - Deliverables
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