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hp-wmi: Add support for SMBus hotkeys
[deliverable/linux.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_HOTKEY_QUERY 0xc
57 #define HPWMI_WIRELESS2_QUERY 0x1b
58
59 enum hp_wmi_radio {
60 HPWMI_WIFI = 0,
61 HPWMI_BLUETOOTH = 1,
62 HPWMI_WWAN = 2,
63 HPWMI_GPS = 3,
64 };
65
66 enum hp_wmi_event_ids {
67 HPWMI_DOCK_EVENT = 1,
68 HPWMI_PARK_HDD = 2,
69 HPWMI_SMART_ADAPTER = 3,
70 HPWMI_BEZEL_BUTTON = 4,
71 HPWMI_WIRELESS = 5,
72 HPWMI_CPU_BATTERY_THROTTLE = 6,
73 HPWMI_LOCK_SWITCH = 7,
74 };
75
76 static int hp_wmi_bios_setup(struct platform_device *device);
77 static int __exit hp_wmi_bios_remove(struct platform_device *device);
78 static int hp_wmi_resume_handler(struct device *device);
79
80 struct bios_args {
81 u32 signature;
82 u32 command;
83 u32 commandtype;
84 u32 datasize;
85 u32 data;
86 };
87
88 struct bios_return {
89 u32 sigpass;
90 u32 return_code;
91 };
92
93 enum hp_return_value {
94 HPWMI_RET_WRONG_SIGNATURE = 0x02,
95 HPWMI_RET_UNKNOWN_COMMAND = 0x03,
96 HPWMI_RET_UNKNOWN_CMDTYPE = 0x04,
97 HPWMI_RET_INVALID_PARAMETERS = 0x05,
98 };
99
100 enum hp_wireless2_bits {
101 HPWMI_POWER_STATE = 0x01,
102 HPWMI_POWER_SOFT = 0x02,
103 HPWMI_POWER_BIOS = 0x04,
104 HPWMI_POWER_HARD = 0x08,
105 };
106
107 #define IS_HWBLOCKED(x) ((x & (HPWMI_POWER_BIOS | HPWMI_POWER_HARD)) \
108 != (HPWMI_POWER_BIOS | HPWMI_POWER_HARD))
109 #define IS_SWBLOCKED(x) !(x & HPWMI_POWER_SOFT)
110
111 struct bios_rfkill2_device_state {
112 u8 radio_type;
113 u8 bus_type;
114 u16 vendor_id;
115 u16 product_id;
116 u16 subsys_vendor_id;
117 u16 subsys_product_id;
118 u8 rfkill_id;
119 u8 power;
120 u8 unknown[4];
121 };
122
123 /* 7 devices fit into the 128 byte buffer */
124 #define HPWMI_MAX_RFKILL2_DEVICES 7
125
126 struct bios_rfkill2_state {
127 u8 unknown[7];
128 u8 count;
129 u8 pad[8];
130 struct bios_rfkill2_device_state device[HPWMI_MAX_RFKILL2_DEVICES];
131 };
132
133 static const struct key_entry hp_wmi_keymap[] = {
134 { KE_KEY, 0x02, { KEY_BRIGHTNESSUP } },
135 { KE_KEY, 0x03, { KEY_BRIGHTNESSDOWN } },
136 { KE_KEY, 0x20e6, { KEY_PROG1 } },
137 { KE_KEY, 0x20e8, { KEY_MEDIA } },
138 { KE_KEY, 0x2142, { KEY_MEDIA } },
139 { KE_KEY, 0x213b, { KEY_INFO } },
140 { KE_KEY, 0x2169, { KEY_DIRECTION } },
141 { KE_KEY, 0x216a, { KEY_SETUP } },
142 { KE_KEY, 0x231b, { KEY_HELP } },
143 { KE_END, 0 }
144 };
145
146 static struct input_dev *hp_wmi_input_dev;
147 static struct platform_device *hp_wmi_platform_dev;
148
149 static struct rfkill *wifi_rfkill;
150 static struct rfkill *bluetooth_rfkill;
151 static struct rfkill *wwan_rfkill;
152 static struct rfkill *gps_rfkill;
153
154 struct rfkill2_device {
155 u8 id;
156 int num;
157 struct rfkill *rfkill;
158 };
159
160 static int rfkill2_count;
161 static struct rfkill2_device rfkill2[HPWMI_MAX_RFKILL2_DEVICES];
162
163 static const struct dev_pm_ops hp_wmi_pm_ops = {
164 .resume = hp_wmi_resume_handler,
165 .restore = hp_wmi_resume_handler,
166 };
167
168 static struct platform_driver hp_wmi_driver = {
169 .driver = {
170 .name = "hp-wmi",
171 .owner = THIS_MODULE,
172 .pm = &hp_wmi_pm_ops,
173 },
174 .probe = hp_wmi_bios_setup,
175 .remove = hp_wmi_bios_remove,
176 };
177
178 /*
179 * hp_wmi_perform_query
180 *
181 * query: The commandtype -> What should be queried
182 * write: The command -> 0 read, 1 write, 3 ODM specific
183 * buffer: Buffer used as input and/or output
184 * insize: Size of input buffer
185 * outsize: Size of output buffer
186 *
187 * returns zero on success
188 * an HP WMI query specific error code (which is positive)
189 * -EINVAL if the query was not successful at all
190 * -EINVAL if the output buffer size exceeds buffersize
191 *
192 * Note: The buffersize must at least be the maximum of the input and output
193 * size. E.g. Battery info query (0x7) is defined to have 1 byte input
194 * and 128 byte output. The caller would do:
195 * buffer = kzalloc(128, GFP_KERNEL);
196 * ret = hp_wmi_perform_query(0x7, 0, buffer, 1, 128)
197 */
198 static int hp_wmi_perform_query(int query, int write, void *buffer,
199 int insize, int outsize)
200 {
201 struct bios_return *bios_return;
202 int actual_outsize;
203 union acpi_object *obj;
204 struct bios_args args = {
205 .signature = 0x55434553,
206 .command = write ? 0x2 : 0x1,
207 .commandtype = query,
208 .datasize = insize,
209 .data = 0,
210 };
211 struct acpi_buffer input = { sizeof(struct bios_args), &args };
212 struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
213 u32 rc;
214
215 if (WARN_ON(insize > sizeof(args.data)))
216 return -EINVAL;
217 memcpy(&args.data, buffer, insize);
218
219 wmi_evaluate_method(HPWMI_BIOS_GUID, 0, 0x3, &input, &output);
220
221 obj = output.pointer;
222
223 if (!obj)
224 return -EINVAL;
225 else if (obj->type != ACPI_TYPE_BUFFER) {
226 kfree(obj);
227 return -EINVAL;
228 }
229
230 bios_return = (struct bios_return *)obj->buffer.pointer;
231 rc = bios_return->return_code;
232
233 if (rc) {
234 if (rc != HPWMI_RET_UNKNOWN_CMDTYPE)
235 pr_warn("query 0x%x returned error 0x%x\n", query, rc);
236 kfree(obj);
237 return rc;
238 }
239
240 if (!outsize) {
241 /* ignore output data */
242 kfree(obj);
243 return 0;
244 }
245
246 actual_outsize = min(outsize, (int)(obj->buffer.length - sizeof(*bios_return)));
247 memcpy(buffer, obj->buffer.pointer + sizeof(*bios_return), actual_outsize);
248 memset(buffer + actual_outsize, 0, outsize - actual_outsize);
249 kfree(obj);
250 return 0;
251 }
252
253 static int hp_wmi_display_state(void)
254 {
255 int state = 0;
256 int ret = hp_wmi_perform_query(HPWMI_DISPLAY_QUERY, 0, &state,
257 sizeof(state), sizeof(state));
258 if (ret)
259 return -EINVAL;
260 return state;
261 }
262
263 static int hp_wmi_hddtemp_state(void)
264 {
265 int state = 0;
266 int ret = hp_wmi_perform_query(HPWMI_HDDTEMP_QUERY, 0, &state,
267 sizeof(state), sizeof(state));
268 if (ret)
269 return -EINVAL;
270 return state;
271 }
272
273 static int hp_wmi_als_state(void)
274 {
275 int state = 0;
276 int ret = hp_wmi_perform_query(HPWMI_ALS_QUERY, 0, &state,
277 sizeof(state), sizeof(state));
278 if (ret)
279 return -EINVAL;
280 return state;
281 }
282
283 static int hp_wmi_dock_state(void)
284 {
285 int state = 0;
286 int ret = hp_wmi_perform_query(HPWMI_HARDWARE_QUERY, 0, &state,
287 sizeof(state), sizeof(state));
288
289 if (ret)
290 return -EINVAL;
291
292 return state & 0x1;
293 }
294
295 static int hp_wmi_tablet_state(void)
296 {
297 int state = 0;
298 int ret = hp_wmi_perform_query(HPWMI_HARDWARE_QUERY, 0, &state,
299 sizeof(state), sizeof(state));
300 if (ret)
301 return ret;
302
303 return (state & 0x4) ? 1 : 0;
304 }
305
306 static int hp_wmi_set_block(void *data, bool blocked)
307 {
308 enum hp_wmi_radio r = (enum hp_wmi_radio) data;
309 int query = BIT(r + 8) | ((!blocked) << r);
310 int ret;
311
312 ret = hp_wmi_perform_query(HPWMI_WIRELESS_QUERY, 1,
313 &query, sizeof(query), 0);
314 if (ret)
315 return -EINVAL;
316 return 0;
317 }
318
319 static const struct rfkill_ops hp_wmi_rfkill_ops = {
320 .set_block = hp_wmi_set_block,
321 };
322
323 static bool hp_wmi_get_sw_state(enum hp_wmi_radio r)
324 {
325 int wireless = 0;
326 int mask;
327 hp_wmi_perform_query(HPWMI_WIRELESS_QUERY, 0,
328 &wireless, sizeof(wireless),
329 sizeof(wireless));
330 /* TBD: Pass error */
331
332 mask = 0x200 << (r * 8);
333
334 if (wireless & mask)
335 return false;
336 else
337 return true;
338 }
339
340 static bool hp_wmi_get_hw_state(enum hp_wmi_radio r)
341 {
342 int wireless = 0;
343 int mask;
344 hp_wmi_perform_query(HPWMI_WIRELESS_QUERY, 0,
345 &wireless, sizeof(wireless),
346 sizeof(wireless));
347 /* TBD: Pass error */
348
349 mask = 0x800 << (r * 8);
350
351 if (wireless & mask)
352 return false;
353 else
354 return true;
355 }
356
357 static int hp_wmi_rfkill2_set_block(void *data, bool blocked)
358 {
359 int rfkill_id = (int)(long)data;
360 char buffer[4] = { 0x01, 0x00, rfkill_id, !blocked };
361
362 if (hp_wmi_perform_query(HPWMI_WIRELESS2_QUERY, 1,
363 buffer, sizeof(buffer), 0))
364 return -EINVAL;
365 return 0;
366 }
367
368 static const struct rfkill_ops hp_wmi_rfkill2_ops = {
369 .set_block = hp_wmi_rfkill2_set_block,
370 };
371
372 static int hp_wmi_rfkill2_refresh(void)
373 {
374 int err, i;
375 struct bios_rfkill2_state state;
376
377 err = hp_wmi_perform_query(HPWMI_WIRELESS2_QUERY, 0, &state,
378 0, sizeof(state));
379 if (err)
380 return err;
381
382 for (i = 0; i < rfkill2_count; i++) {
383 int num = rfkill2[i].num;
384 struct bios_rfkill2_device_state *devstate;
385 devstate = &state.device[num];
386
387 if (num >= state.count ||
388 devstate->rfkill_id != rfkill2[i].id) {
389 pr_warn("power configuration of the wireless devices unexpectedly changed\n");
390 continue;
391 }
392
393 rfkill_set_states(rfkill2[i].rfkill,
394 IS_SWBLOCKED(devstate->power),
395 IS_HWBLOCKED(devstate->power));
396 }
397
398 return 0;
399 }
400
401 static ssize_t show_display(struct device *dev, struct device_attribute *attr,
402 char *buf)
403 {
404 int value = hp_wmi_display_state();
405 if (value < 0)
406 return -EINVAL;
407 return sprintf(buf, "%d\n", value);
408 }
409
410 static ssize_t show_hddtemp(struct device *dev, struct device_attribute *attr,
411 char *buf)
412 {
413 int value = hp_wmi_hddtemp_state();
414 if (value < 0)
415 return -EINVAL;
416 return sprintf(buf, "%d\n", value);
417 }
418
419 static ssize_t show_als(struct device *dev, struct device_attribute *attr,
420 char *buf)
421 {
422 int value = hp_wmi_als_state();
423 if (value < 0)
424 return -EINVAL;
425 return sprintf(buf, "%d\n", value);
426 }
427
428 static ssize_t show_dock(struct device *dev, struct device_attribute *attr,
429 char *buf)
430 {
431 int value = hp_wmi_dock_state();
432 if (value < 0)
433 return -EINVAL;
434 return sprintf(buf, "%d\n", value);
435 }
436
437 static ssize_t show_tablet(struct device *dev, struct device_attribute *attr,
438 char *buf)
439 {
440 int value = hp_wmi_tablet_state();
441 if (value < 0)
442 return -EINVAL;
443 return sprintf(buf, "%d\n", value);
444 }
445
446 static ssize_t set_als(struct device *dev, struct device_attribute *attr,
447 const char *buf, size_t count)
448 {
449 u32 tmp = simple_strtoul(buf, NULL, 10);
450 int ret = hp_wmi_perform_query(HPWMI_ALS_QUERY, 1, &tmp,
451 sizeof(tmp), sizeof(tmp));
452 if (ret)
453 return -EINVAL;
454
455 return count;
456 }
457
458 static DEVICE_ATTR(display, S_IRUGO, show_display, NULL);
459 static DEVICE_ATTR(hddtemp, S_IRUGO, show_hddtemp, NULL);
460 static DEVICE_ATTR(als, S_IRUGO | S_IWUSR, show_als, set_als);
461 static DEVICE_ATTR(dock, S_IRUGO, show_dock, NULL);
462 static DEVICE_ATTR(tablet, S_IRUGO, show_tablet, NULL);
463
464 static void hp_wmi_notify(u32 value, void *context)
465 {
466 struct acpi_buffer response = { ACPI_ALLOCATE_BUFFER, NULL };
467 union acpi_object *obj;
468 u32 event_id, event_data;
469 int key_code = 0, ret;
470 u32 *location;
471 acpi_status status;
472
473 status = wmi_get_event_data(value, &response);
474 if (status != AE_OK) {
475 pr_info("bad event status 0x%x\n", status);
476 return;
477 }
478
479 obj = (union acpi_object *)response.pointer;
480
481 if (!obj)
482 return;
483 if (obj->type != ACPI_TYPE_BUFFER) {
484 pr_info("Unknown response received %d\n", obj->type);
485 kfree(obj);
486 return;
487 }
488
489 /*
490 * Depending on ACPI version the concatenation of id and event data
491 * inside _WED function will result in a 8 or 16 byte buffer.
492 */
493 location = (u32 *)obj->buffer.pointer;
494 if (obj->buffer.length == 8) {
495 event_id = *location;
496 event_data = *(location + 1);
497 } else if (obj->buffer.length == 16) {
498 event_id = *location;
499 event_data = *(location + 2);
500 } else {
501 pr_info("Unknown buffer length %d\n", obj->buffer.length);
502 kfree(obj);
503 return;
504 }
505 kfree(obj);
506
507 switch (event_id) {
508 case HPWMI_DOCK_EVENT:
509 input_report_switch(hp_wmi_input_dev, SW_DOCK,
510 hp_wmi_dock_state());
511 input_report_switch(hp_wmi_input_dev, SW_TABLET_MODE,
512 hp_wmi_tablet_state());
513 input_sync(hp_wmi_input_dev);
514 break;
515 case HPWMI_PARK_HDD:
516 break;
517 case HPWMI_SMART_ADAPTER:
518 break;
519 case HPWMI_BEZEL_BUTTON:
520 ret = hp_wmi_perform_query(HPWMI_HOTKEY_QUERY, 0,
521 &key_code,
522 sizeof(key_code),
523 sizeof(key_code));
524 if (ret)
525 break;
526
527 if (!sparse_keymap_report_event(hp_wmi_input_dev,
528 key_code, 1, true))
529 pr_info("Unknown key code - 0x%x\n", key_code);
530 break;
531 case HPWMI_WIRELESS:
532 if (rfkill2_count) {
533 hp_wmi_rfkill2_refresh();
534 break;
535 }
536
537 if (wifi_rfkill)
538 rfkill_set_states(wifi_rfkill,
539 hp_wmi_get_sw_state(HPWMI_WIFI),
540 hp_wmi_get_hw_state(HPWMI_WIFI));
541 if (bluetooth_rfkill)
542 rfkill_set_states(bluetooth_rfkill,
543 hp_wmi_get_sw_state(HPWMI_BLUETOOTH),
544 hp_wmi_get_hw_state(HPWMI_BLUETOOTH));
545 if (wwan_rfkill)
546 rfkill_set_states(wwan_rfkill,
547 hp_wmi_get_sw_state(HPWMI_WWAN),
548 hp_wmi_get_hw_state(HPWMI_WWAN));
549 if (gps_rfkill)
550 rfkill_set_states(gps_rfkill,
551 hp_wmi_get_sw_state(HPWMI_GPS),
552 hp_wmi_get_hw_state(HPWMI_GPS));
553 break;
554 case HPWMI_CPU_BATTERY_THROTTLE:
555 pr_info("Unimplemented CPU throttle because of 3 Cell battery event detected\n");
556 break;
557 case HPWMI_LOCK_SWITCH:
558 break;
559 default:
560 pr_info("Unknown event_id - %d - 0x%x\n", event_id, event_data);
561 break;
562 }
563 }
564
565 static int __init hp_wmi_input_setup(void)
566 {
567 acpi_status status;
568 int err;
569
570 hp_wmi_input_dev = input_allocate_device();
571 if (!hp_wmi_input_dev)
572 return -ENOMEM;
573
574 hp_wmi_input_dev->name = "HP WMI hotkeys";
575 hp_wmi_input_dev->phys = "wmi/input0";
576 hp_wmi_input_dev->id.bustype = BUS_HOST;
577
578 __set_bit(EV_SW, hp_wmi_input_dev->evbit);
579 __set_bit(SW_DOCK, hp_wmi_input_dev->swbit);
580 __set_bit(SW_TABLET_MODE, hp_wmi_input_dev->swbit);
581
582 err = sparse_keymap_setup(hp_wmi_input_dev, hp_wmi_keymap, NULL);
583 if (err)
584 goto err_free_dev;
585
586 /* Set initial hardware state */
587 input_report_switch(hp_wmi_input_dev, SW_DOCK, hp_wmi_dock_state());
588 input_report_switch(hp_wmi_input_dev, SW_TABLET_MODE,
589 hp_wmi_tablet_state());
590 input_sync(hp_wmi_input_dev);
591
592 status = wmi_install_notify_handler(HPWMI_EVENT_GUID, hp_wmi_notify, NULL);
593 if (ACPI_FAILURE(status)) {
594 err = -EIO;
595 goto err_free_keymap;
596 }
597
598 err = input_register_device(hp_wmi_input_dev);
599 if (err)
600 goto err_uninstall_notifier;
601
602 return 0;
603
604 err_uninstall_notifier:
605 wmi_remove_notify_handler(HPWMI_EVENT_GUID);
606 err_free_keymap:
607 sparse_keymap_free(hp_wmi_input_dev);
608 err_free_dev:
609 input_free_device(hp_wmi_input_dev);
610 return err;
611 }
612
613 static void hp_wmi_input_destroy(void)
614 {
615 wmi_remove_notify_handler(HPWMI_EVENT_GUID);
616 sparse_keymap_free(hp_wmi_input_dev);
617 input_unregister_device(hp_wmi_input_dev);
618 }
619
620 static void cleanup_sysfs(struct platform_device *device)
621 {
622 device_remove_file(&device->dev, &dev_attr_display);
623 device_remove_file(&device->dev, &dev_attr_hddtemp);
624 device_remove_file(&device->dev, &dev_attr_als);
625 device_remove_file(&device->dev, &dev_attr_dock);
626 device_remove_file(&device->dev, &dev_attr_tablet);
627 }
628
629 static int hp_wmi_rfkill_setup(struct platform_device *device)
630 {
631 int err;
632 int wireless = 0;
633
634 err = hp_wmi_perform_query(HPWMI_WIRELESS_QUERY, 0, &wireless,
635 sizeof(wireless), sizeof(wireless));
636 if (err)
637 return err;
638
639 if (wireless & 0x1) {
640 wifi_rfkill = rfkill_alloc("hp-wifi", &device->dev,
641 RFKILL_TYPE_WLAN,
642 &hp_wmi_rfkill_ops,
643 (void *) HPWMI_WIFI);
644 if (!wifi_rfkill)
645 return -ENOMEM;
646 rfkill_init_sw_state(wifi_rfkill,
647 hp_wmi_get_sw_state(HPWMI_WIFI));
648 rfkill_set_hw_state(wifi_rfkill,
649 hp_wmi_get_hw_state(HPWMI_WIFI));
650 err = rfkill_register(wifi_rfkill);
651 if (err)
652 goto register_wifi_error;
653 }
654
655 if (wireless & 0x2) {
656 bluetooth_rfkill = rfkill_alloc("hp-bluetooth", &device->dev,
657 RFKILL_TYPE_BLUETOOTH,
658 &hp_wmi_rfkill_ops,
659 (void *) HPWMI_BLUETOOTH);
660 if (!bluetooth_rfkill) {
661 err = -ENOMEM;
662 goto register_wifi_error;
663 }
664 rfkill_init_sw_state(bluetooth_rfkill,
665 hp_wmi_get_sw_state(HPWMI_BLUETOOTH));
666 rfkill_set_hw_state(bluetooth_rfkill,
667 hp_wmi_get_hw_state(HPWMI_BLUETOOTH));
668 err = rfkill_register(bluetooth_rfkill);
669 if (err)
670 goto register_bluetooth_error;
671 }
672
673 if (wireless & 0x4) {
674 wwan_rfkill = rfkill_alloc("hp-wwan", &device->dev,
675 RFKILL_TYPE_WWAN,
676 &hp_wmi_rfkill_ops,
677 (void *) HPWMI_WWAN);
678 if (!wwan_rfkill) {
679 err = -ENOMEM;
680 goto register_gps_error;
681 }
682 rfkill_init_sw_state(wwan_rfkill,
683 hp_wmi_get_sw_state(HPWMI_WWAN));
684 rfkill_set_hw_state(wwan_rfkill,
685 hp_wmi_get_hw_state(HPWMI_WWAN));
686 err = rfkill_register(wwan_rfkill);
687 if (err)
688 goto register_wwan_err;
689 }
690
691 if (wireless & 0x8) {
692 gps_rfkill = rfkill_alloc("hp-gps", &device->dev,
693 RFKILL_TYPE_GPS,
694 &hp_wmi_rfkill_ops,
695 (void *) HPWMI_GPS);
696 if (!gps_rfkill) {
697 err = -ENOMEM;
698 goto register_bluetooth_error;
699 }
700 rfkill_init_sw_state(gps_rfkill,
701 hp_wmi_get_sw_state(HPWMI_GPS));
702 rfkill_set_hw_state(bluetooth_rfkill,
703 hp_wmi_get_hw_state(HPWMI_GPS));
704 err = rfkill_register(gps_rfkill);
705 if (err)
706 goto register_gps_error;
707 }
708
709 return 0;
710 register_wwan_err:
711 rfkill_destroy(wwan_rfkill);
712 wwan_rfkill = NULL;
713 if (gps_rfkill)
714 rfkill_unregister(gps_rfkill);
715 register_gps_error:
716 rfkill_destroy(gps_rfkill);
717 gps_rfkill = NULL;
718 if (bluetooth_rfkill)
719 rfkill_unregister(bluetooth_rfkill);
720 register_bluetooth_error:
721 rfkill_destroy(bluetooth_rfkill);
722 bluetooth_rfkill = NULL;
723 if (wifi_rfkill)
724 rfkill_unregister(wifi_rfkill);
725 register_wifi_error:
726 rfkill_destroy(wifi_rfkill);
727 wifi_rfkill = NULL;
728 return err;
729 }
730
731 static int hp_wmi_rfkill2_setup(struct platform_device *device)
732 {
733 int err, i;
734 struct bios_rfkill2_state state;
735 err = hp_wmi_perform_query(HPWMI_WIRELESS2_QUERY, 0, &state,
736 0, sizeof(state));
737 if (err)
738 return err;
739
740 if (state.count > HPWMI_MAX_RFKILL2_DEVICES) {
741 pr_warn("unable to parse 0x1b query output\n");
742 return -EINVAL;
743 }
744
745 for (i = 0; i < state.count; i++) {
746 struct rfkill *rfkill;
747 enum rfkill_type type;
748 char *name;
749 switch (state.device[i].radio_type) {
750 case HPWMI_WIFI:
751 type = RFKILL_TYPE_WLAN;
752 name = "hp-wifi";
753 break;
754 case HPWMI_BLUETOOTH:
755 type = RFKILL_TYPE_BLUETOOTH;
756 name = "hp-bluetooth";
757 break;
758 case HPWMI_WWAN:
759 type = RFKILL_TYPE_WWAN;
760 name = "hp-wwan";
761 break;
762 case HPWMI_GPS:
763 type = RFKILL_TYPE_GPS;
764 name = "hp-gps";
765 break;
766 default:
767 pr_warn("unknown device type 0x%x\n",
768 state.device[i].radio_type);
769 continue;
770 }
771
772 if (!state.device[i].vendor_id) {
773 pr_warn("zero device %d while %d reported\n",
774 i, state.count);
775 continue;
776 }
777
778 rfkill = rfkill_alloc(name, &device->dev, type,
779 &hp_wmi_rfkill2_ops, (void *)(long)i);
780 if (!rfkill) {
781 err = -ENOMEM;
782 goto fail;
783 }
784
785 rfkill2[rfkill2_count].id = state.device[i].rfkill_id;
786 rfkill2[rfkill2_count].num = i;
787 rfkill2[rfkill2_count].rfkill = rfkill;
788
789 rfkill_init_sw_state(rfkill,
790 IS_SWBLOCKED(state.device[i].power));
791 rfkill_set_hw_state(rfkill,
792 IS_HWBLOCKED(state.device[i].power));
793
794 if (!(state.device[i].power & HPWMI_POWER_BIOS))
795 pr_info("device %s blocked by BIOS\n", name);
796
797 err = rfkill_register(rfkill);
798 if (err) {
799 rfkill_destroy(rfkill);
800 goto fail;
801 }
802
803 rfkill2_count++;
804 }
805
806 return 0;
807 fail:
808 for (; rfkill2_count > 0; rfkill2_count--) {
809 rfkill_unregister(rfkill2[rfkill2_count - 1].rfkill);
810 rfkill_destroy(rfkill2[rfkill2_count - 1].rfkill);
811 }
812 return err;
813 }
814
815 static int hp_wmi_bios_setup(struct platform_device *device)
816 {
817 int err;
818
819 /* clear detected rfkill devices */
820 wifi_rfkill = NULL;
821 bluetooth_rfkill = NULL;
822 wwan_rfkill = NULL;
823 gps_rfkill = NULL;
824 rfkill2_count = 0;
825
826 if (hp_wmi_rfkill_setup(device))
827 hp_wmi_rfkill2_setup(device);
828
829 err = device_create_file(&device->dev, &dev_attr_display);
830 if (err)
831 goto add_sysfs_error;
832 err = device_create_file(&device->dev, &dev_attr_hddtemp);
833 if (err)
834 goto add_sysfs_error;
835 err = device_create_file(&device->dev, &dev_attr_als);
836 if (err)
837 goto add_sysfs_error;
838 err = device_create_file(&device->dev, &dev_attr_dock);
839 if (err)
840 goto add_sysfs_error;
841 err = device_create_file(&device->dev, &dev_attr_tablet);
842 if (err)
843 goto add_sysfs_error;
844 return 0;
845
846 add_sysfs_error:
847 cleanup_sysfs(device);
848 return err;
849 }
850
851 static int __exit hp_wmi_bios_remove(struct platform_device *device)
852 {
853 int i;
854 cleanup_sysfs(device);
855
856 for (i = 0; i < rfkill2_count; i++) {
857 rfkill_unregister(rfkill2[i].rfkill);
858 rfkill_destroy(rfkill2[i].rfkill);
859 }
860
861 if (wifi_rfkill) {
862 rfkill_unregister(wifi_rfkill);
863 rfkill_destroy(wifi_rfkill);
864 }
865 if (bluetooth_rfkill) {
866 rfkill_unregister(bluetooth_rfkill);
867 rfkill_destroy(bluetooth_rfkill);
868 }
869 if (wwan_rfkill) {
870 rfkill_unregister(wwan_rfkill);
871 rfkill_destroy(wwan_rfkill);
872 }
873 if (gps_rfkill) {
874 rfkill_unregister(gps_rfkill);
875 rfkill_destroy(gps_rfkill);
876 }
877
878 return 0;
879 }
880
881 static int hp_wmi_resume_handler(struct device *device)
882 {
883 /*
884 * Hardware state may have changed while suspended, so trigger
885 * input events for the current state. As this is a switch,
886 * the input layer will only actually pass it on if the state
887 * changed.
888 */
889 if (hp_wmi_input_dev) {
890 input_report_switch(hp_wmi_input_dev, SW_DOCK,
891 hp_wmi_dock_state());
892 input_report_switch(hp_wmi_input_dev, SW_TABLET_MODE,
893 hp_wmi_tablet_state());
894 input_sync(hp_wmi_input_dev);
895 }
896
897 if (rfkill2_count)
898 hp_wmi_rfkill2_refresh();
899
900 if (wifi_rfkill)
901 rfkill_set_states(wifi_rfkill,
902 hp_wmi_get_sw_state(HPWMI_WIFI),
903 hp_wmi_get_hw_state(HPWMI_WIFI));
904 if (bluetooth_rfkill)
905 rfkill_set_states(bluetooth_rfkill,
906 hp_wmi_get_sw_state(HPWMI_BLUETOOTH),
907 hp_wmi_get_hw_state(HPWMI_BLUETOOTH));
908 if (wwan_rfkill)
909 rfkill_set_states(wwan_rfkill,
910 hp_wmi_get_sw_state(HPWMI_WWAN),
911 hp_wmi_get_hw_state(HPWMI_WWAN));
912 if (gps_rfkill)
913 rfkill_set_states(gps_rfkill,
914 hp_wmi_get_sw_state(HPWMI_GPS),
915 hp_wmi_get_hw_state(HPWMI_GPS));
916
917 return 0;
918 }
919
920 static int __init hp_wmi_init(void)
921 {
922 int err;
923 int event_capable = wmi_has_guid(HPWMI_EVENT_GUID);
924 int bios_capable = wmi_has_guid(HPWMI_BIOS_GUID);
925
926 if (event_capable) {
927 err = hp_wmi_input_setup();
928 if (err)
929 return err;
930
931 //Enable magic for hotkeys that run on the SMBus
932 ec_write(0xe6,0x6e);
933 }
934
935 if (bios_capable) {
936 err = platform_driver_register(&hp_wmi_driver);
937 if (err)
938 goto err_driver_reg;
939 hp_wmi_platform_dev = platform_device_alloc("hp-wmi", -1);
940 if (!hp_wmi_platform_dev) {
941 err = -ENOMEM;
942 goto err_device_alloc;
943 }
944 err = platform_device_add(hp_wmi_platform_dev);
945 if (err)
946 goto err_device_add;
947 }
948
949 if (!bios_capable && !event_capable)
950 return -ENODEV;
951
952 return 0;
953
954 err_device_add:
955 platform_device_put(hp_wmi_platform_dev);
956 err_device_alloc:
957 platform_driver_unregister(&hp_wmi_driver);
958 err_driver_reg:
959 if (event_capable)
960 hp_wmi_input_destroy();
961
962 return err;
963 }
964
965 static void __exit hp_wmi_exit(void)
966 {
967 if (wmi_has_guid(HPWMI_EVENT_GUID))
968 hp_wmi_input_destroy();
969
970 if (hp_wmi_platform_dev) {
971 platform_device_unregister(hp_wmi_platform_dev);
972 platform_driver_unregister(&hp_wmi_driver);
973 }
974 }
975
976 module_init(hp_wmi_init);
977 module_exit(hp_wmi_exit);
Linux kernel - Deliverables
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