387183a2d6ddd4405c8430137e8da3c4595b5407
[linux-3.10.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 };
64
65 enum hp_wmi_event_ids {
66         HPWMI_DOCK_EVENT = 1,
67         HPWMI_PARK_HDD = 2,
68         HPWMI_SMART_ADAPTER = 3,
69         HPWMI_BEZEL_BUTTON = 4,
70         HPWMI_WIRELESS = 5,
71         HPWMI_CPU_BATTERY_THROTTLE = 6,
72         HPWMI_LOCK_SWITCH = 7,
73 };
74
75 static int __devinit hp_wmi_bios_setup(struct platform_device *device);
76 static int __exit hp_wmi_bios_remove(struct platform_device *device);
77 static int hp_wmi_resume_handler(struct device *device);
78
79 struct bios_args {
80         u32 signature;
81         u32 command;
82         u32 commandtype;
83         u32 datasize;
84         u32 data;
85 };
86
87 struct bios_return {
88         u32 sigpass;
89         u32 return_code;
90 };
91
92 enum hp_return_value {
93         HPWMI_RET_WRONG_SIGNATURE       = 0x02,
94         HPWMI_RET_UNKNOWN_COMMAND       = 0x03,
95         HPWMI_RET_UNKNOWN_CMDTYPE       = 0x04,
96         HPWMI_RET_INVALID_PARAMETERS    = 0x05,
97 };
98
99 enum hp_wireless2_bits {
100         HPWMI_POWER_STATE       = 0x01,
101         HPWMI_POWER_SOFT        = 0x02,
102         HPWMI_POWER_BIOS        = 0x04,
103         HPWMI_POWER_HARD        = 0x08,
104 };
105
106 #define IS_HWBLOCKED(x) ((x & (HPWMI_POWER_BIOS | HPWMI_POWER_HARD)) \
107                          != (HPWMI_POWER_BIOS | HPWMI_POWER_HARD))
108 #define IS_SWBLOCKED(x) !(x & HPWMI_POWER_SOFT)
109
110 struct bios_rfkill2_device_state {
111         u8 radio_type;
112         u8 bus_type;
113         u16 vendor_id;
114         u16 product_id;
115         u16 subsys_vendor_id;
116         u16 subsys_product_id;
117         u8 rfkill_id;
118         u8 power;
119         u8 unknown[4];
120 };
121
122 /* 7 devices fit into the 128 byte buffer */
123 #define HPWMI_MAX_RFKILL2_DEVICES       7
124
125 struct bios_rfkill2_state {
126         u8 unknown[7];
127         u8 count;
128         u8 pad[8];
129         struct bios_rfkill2_device_state device[HPWMI_MAX_RFKILL2_DEVICES];
130 };
131
132 static const struct key_entry hp_wmi_keymap[] = {
133         { KE_KEY, 0x02,   { KEY_BRIGHTNESSUP } },
134         { KE_KEY, 0x03,   { KEY_BRIGHTNESSDOWN } },
135         { KE_KEY, 0x20e6, { KEY_PROG1 } },
136         { KE_KEY, 0x20e8, { KEY_MEDIA } },
137         { KE_KEY, 0x2142, { KEY_MEDIA } },
138         { KE_KEY, 0x213b, { KEY_INFO } },
139         { KE_KEY, 0x2169, { KEY_DIRECTION } },
140         { KE_KEY, 0x231b, { KEY_HELP } },
141         { KE_END, 0 }
142 };
143
144 static struct input_dev *hp_wmi_input_dev;
145 static struct platform_device *hp_wmi_platform_dev;
146
147 static struct rfkill *wifi_rfkill;
148 static struct rfkill *bluetooth_rfkill;
149 static struct rfkill *wwan_rfkill;
150
151 struct rfkill2_device {
152         u8 id;
153         int num;
154         struct rfkill *rfkill;
155 };
156
157 static int rfkill2_count;
158 static struct rfkill2_device rfkill2[HPWMI_MAX_RFKILL2_DEVICES];
159
160 static const struct dev_pm_ops hp_wmi_pm_ops = {
161         .resume  = hp_wmi_resume_handler,
162         .restore  = hp_wmi_resume_handler,
163 };
164
165 static struct platform_driver hp_wmi_driver = {
166         .driver = {
167                 .name = "hp-wmi",
168                 .owner = THIS_MODULE,
169                 .pm = &hp_wmi_pm_ops,
170         },
171         .probe = hp_wmi_bios_setup,
172         .remove = hp_wmi_bios_remove,
173 };
174
175 /*
176  * hp_wmi_perform_query
177  *
178  * query:       The commandtype -> What should be queried
179  * write:       The command -> 0 read, 1 write, 3 ODM specific
180  * buffer:      Buffer used as input and/or output
181  * insize:      Size of input buffer
182  * outsize:     Size of output buffer
183  *
184  * returns zero on success
185  *         an HP WMI query specific error code (which is positive)
186  *         -EINVAL if the query was not successful at all
187  *         -EINVAL if the output buffer size exceeds buffersize
188  *
189  * Note: The buffersize must at least be the maximum of the input and output
190  *       size. E.g. Battery info query (0x7) is defined to have 1 byte input
191  *       and 128 byte output. The caller would do:
192  *       buffer = kzalloc(128, GFP_KERNEL);
193  *       ret = hp_wmi_perform_query(0x7, 0, buffer, 1, 128)
194  */
195 static int hp_wmi_perform_query(int query, int write, void *buffer,
196                                 int insize, int outsize)
197 {
198         struct bios_return *bios_return;
199         int actual_outsize;
200         union acpi_object *obj;
201         struct bios_args args = {
202                 .signature = 0x55434553,
203                 .command = write ? 0x2 : 0x1,
204                 .commandtype = query,
205                 .datasize = insize,
206                 .data = 0,
207         };
208         struct acpi_buffer input = { sizeof(struct bios_args), &args };
209         struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
210         u32 rc;
211
212         if (WARN_ON(insize > sizeof(args.data)))
213                 return -EINVAL;
214         memcpy(&args.data, buffer, insize);
215
216         wmi_evaluate_method(HPWMI_BIOS_GUID, 0, 0x3, &input, &output);
217
218         obj = output.pointer;
219
220         if (!obj)
221                 return -EINVAL;
222         else if (obj->type != ACPI_TYPE_BUFFER) {
223                 kfree(obj);
224                 return -EINVAL;
225         }
226
227         bios_return = (struct bios_return *)obj->buffer.pointer;
228         rc = bios_return->return_code;
229
230         if (rc) {
231                 if (rc != HPWMI_RET_UNKNOWN_CMDTYPE)
232                         pr_warn("query 0x%x returned error 0x%x\n", query, rc);
233                 kfree(obj);
234                 return rc;
235         }
236
237         if (!outsize) {
238                 /* ignore output data */
239                 kfree(obj);
240                 return 0;
241         }
242
243         actual_outsize = min(outsize, (int)(obj->buffer.length - sizeof(*bios_return)));
244         memcpy(buffer, obj->buffer.pointer + sizeof(*bios_return), actual_outsize);
245         memset(buffer + actual_outsize, 0, outsize - actual_outsize);
246         kfree(obj);
247         return 0;
248 }
249
250 static int hp_wmi_display_state(void)
251 {
252         int state = 0;
253         int ret = hp_wmi_perform_query(HPWMI_DISPLAY_QUERY, 0, &state,
254                                        sizeof(state), sizeof(state));
255         if (ret)
256                 return -EINVAL;
257         return state;
258 }
259
260 static int hp_wmi_hddtemp_state(void)
261 {
262         int state = 0;
263         int ret = hp_wmi_perform_query(HPWMI_HDDTEMP_QUERY, 0, &state,
264                                        sizeof(state), sizeof(state));
265         if (ret)
266                 return -EINVAL;
267         return state;
268 }
269
270 static int hp_wmi_als_state(void)
271 {
272         int state = 0;
273         int ret = hp_wmi_perform_query(HPWMI_ALS_QUERY, 0, &state,
274                                        sizeof(state), sizeof(state));
275         if (ret)
276                 return -EINVAL;
277         return state;
278 }
279
280 static int hp_wmi_dock_state(void)
281 {
282         int state = 0;
283         int ret = hp_wmi_perform_query(HPWMI_HARDWARE_QUERY, 0, &state,
284                                        sizeof(state), sizeof(state));
285
286         if (ret)
287                 return -EINVAL;
288
289         return state & 0x1;
290 }
291
292 static int hp_wmi_tablet_state(void)
293 {
294         int state = 0;
295         int ret = hp_wmi_perform_query(HPWMI_HARDWARE_QUERY, 0, &state,
296                                        sizeof(state), sizeof(state));
297         if (ret)
298                 return ret;
299
300         return (state & 0x4) ? 1 : 0;
301 }
302
303 static int hp_wmi_set_block(void *data, bool blocked)
304 {
305         enum hp_wmi_radio r = (enum hp_wmi_radio) data;
306         int query = BIT(r + 8) | ((!blocked) << r);
307         int ret;
308
309         ret = hp_wmi_perform_query(HPWMI_WIRELESS_QUERY, 1,
310                                    &query, sizeof(query), 0);
311         if (ret)
312                 return -EINVAL;
313         return 0;
314 }
315
316 static const struct rfkill_ops hp_wmi_rfkill_ops = {
317         .set_block = hp_wmi_set_block,
318 };
319
320 static bool hp_wmi_get_sw_state(enum hp_wmi_radio r)
321 {
322         int wireless = 0;
323         int mask;
324         hp_wmi_perform_query(HPWMI_WIRELESS_QUERY, 0,
325                              &wireless, sizeof(wireless),
326                              sizeof(wireless));
327         /* TBD: Pass error */
328
329         mask = 0x200 << (r * 8);
330
331         if (wireless & mask)
332                 return false;
333         else
334                 return true;
335 }
336
337 static bool hp_wmi_get_hw_state(enum hp_wmi_radio r)
338 {
339         int wireless = 0;
340         int mask;
341         hp_wmi_perform_query(HPWMI_WIRELESS_QUERY, 0,
342                              &wireless, sizeof(wireless),
343                              sizeof(wireless));
344         /* TBD: Pass error */
345
346         mask = 0x800 << (r * 8);
347
348         if (wireless & mask)
349                 return false;
350         else
351                 return true;
352 }
353
354 static int hp_wmi_rfkill2_set_block(void *data, bool blocked)
355 {
356         int rfkill_id = (int)(long)data;
357         char buffer[4] = { 0x01, 0x00, rfkill_id, !blocked };
358
359         if (hp_wmi_perform_query(HPWMI_WIRELESS2_QUERY, 1,
360                                    buffer, sizeof(buffer), 0))
361                 return -EINVAL;
362         return 0;
363 }
364
365 static const struct rfkill_ops hp_wmi_rfkill2_ops = {
366         .set_block = hp_wmi_rfkill2_set_block,
367 };
368
369 static int hp_wmi_rfkill2_refresh(void)
370 {
371         int err, i;
372         struct bios_rfkill2_state state;
373
374         err = hp_wmi_perform_query(HPWMI_WIRELESS2_QUERY, 0, &state,
375                                    0, sizeof(state));
376         if (err)
377                 return err;
378
379         for (i = 0; i < rfkill2_count; i++) {
380                 int num = rfkill2[i].num;
381                 struct bios_rfkill2_device_state *devstate;
382                 devstate = &state.device[num];
383
384                 if (num >= state.count ||
385                     devstate->rfkill_id != rfkill2[i].id) {
386                         pr_warn("power configuration of the wireless devices unexpectedly changed\n");
387                         continue;
388                 }
389
390                 rfkill_set_states(rfkill2[i].rfkill,
391                                   IS_SWBLOCKED(devstate->power),
392                                   IS_HWBLOCKED(devstate->power));
393         }
394
395         return 0;
396 }
397
398 static ssize_t show_display(struct device *dev, struct device_attribute *attr,
399                             char *buf)
400 {
401         int value = hp_wmi_display_state();
402         if (value < 0)
403                 return -EINVAL;
404         return sprintf(buf, "%d\n", value);
405 }
406
407 static ssize_t show_hddtemp(struct device *dev, struct device_attribute *attr,
408                             char *buf)
409 {
410         int value = hp_wmi_hddtemp_state();
411         if (value < 0)
412                 return -EINVAL;
413         return sprintf(buf, "%d\n", value);
414 }
415
416 static ssize_t show_als(struct device *dev, struct device_attribute *attr,
417                         char *buf)
418 {
419         int value = hp_wmi_als_state();
420         if (value < 0)
421                 return -EINVAL;
422         return sprintf(buf, "%d\n", value);
423 }
424
425 static ssize_t show_dock(struct device *dev, struct device_attribute *attr,
426                          char *buf)
427 {
428         int value = hp_wmi_dock_state();
429         if (value < 0)
430                 return -EINVAL;
431         return sprintf(buf, "%d\n", value);
432 }
433
434 static ssize_t show_tablet(struct device *dev, struct device_attribute *attr,
435                          char *buf)
436 {
437         int value = hp_wmi_tablet_state();
438         if (value < 0)
439                 return -EINVAL;
440         return sprintf(buf, "%d\n", value);
441 }
442
443 static ssize_t set_als(struct device *dev, struct device_attribute *attr,
444                        const char *buf, size_t count)
445 {
446         u32 tmp = simple_strtoul(buf, NULL, 10);
447         int ret = hp_wmi_perform_query(HPWMI_ALS_QUERY, 1, &tmp,
448                                        sizeof(tmp), sizeof(tmp));
449         if (ret)
450                 return -EINVAL;
451
452         return count;
453 }
454
455 static DEVICE_ATTR(display, S_IRUGO, show_display, NULL);
456 static DEVICE_ATTR(hddtemp, S_IRUGO, show_hddtemp, NULL);
457 static DEVICE_ATTR(als, S_IRUGO | S_IWUSR, show_als, set_als);
458 static DEVICE_ATTR(dock, S_IRUGO, show_dock, NULL);
459 static DEVICE_ATTR(tablet, S_IRUGO, show_tablet, NULL);
460
461 static void hp_wmi_notify(u32 value, void *context)
462 {
463         struct acpi_buffer response = { ACPI_ALLOCATE_BUFFER, NULL };
464         union acpi_object *obj;
465         u32 event_id, event_data;
466         int key_code = 0, ret;
467         u32 *location;
468         acpi_status status;
469
470         status = wmi_get_event_data(value, &response);
471         if (status != AE_OK) {
472                 pr_info("bad event status 0x%x\n", status);
473                 return;
474         }
475
476         obj = (union acpi_object *)response.pointer;
477
478         if (!obj)
479                 return;
480         if (obj->type != ACPI_TYPE_BUFFER) {
481                 pr_info("Unknown response received %d\n", obj->type);
482                 kfree(obj);
483                 return;
484         }
485
486         /*
487          * Depending on ACPI version the concatenation of id and event data
488          * inside _WED function will result in a 8 or 16 byte buffer.
489          */
490         location = (u32 *)obj->buffer.pointer;
491         if (obj->buffer.length == 8) {
492                 event_id = *location;
493                 event_data = *(location + 1);
494         } else if (obj->buffer.length == 16) {
495                 event_id = *location;
496                 event_data = *(location + 2);
497         } else {
498                 pr_info("Unknown buffer length %d\n", obj->buffer.length);
499                 kfree(obj);
500                 return;
501         }
502         kfree(obj);
503
504         switch (event_id) {
505         case HPWMI_DOCK_EVENT:
506                 input_report_switch(hp_wmi_input_dev, SW_DOCK,
507                                     hp_wmi_dock_state());
508                 input_report_switch(hp_wmi_input_dev, SW_TABLET_MODE,
509                                     hp_wmi_tablet_state());
510                 input_sync(hp_wmi_input_dev);
511                 break;
512         case HPWMI_PARK_HDD:
513                 break;
514         case HPWMI_SMART_ADAPTER:
515                 break;
516         case HPWMI_BEZEL_BUTTON:
517                 ret = hp_wmi_perform_query(HPWMI_HOTKEY_QUERY, 0,
518                                            &key_code,
519                                            sizeof(key_code),
520                                            sizeof(key_code));
521                 if (ret)
522                         break;
523
524                 if (!sparse_keymap_report_event(hp_wmi_input_dev,
525                                                 key_code, 1, true))
526                         pr_info("Unknown key code - 0x%x\n", key_code);
527                 break;
528         case HPWMI_WIRELESS:
529                 if (rfkill2_count) {
530                         hp_wmi_rfkill2_refresh();
531                         break;
532                 }
533
534                 if (wifi_rfkill)
535                         rfkill_set_states(wifi_rfkill,
536                                           hp_wmi_get_sw_state(HPWMI_WIFI),
537                                           hp_wmi_get_hw_state(HPWMI_WIFI));
538                 if (bluetooth_rfkill)
539                         rfkill_set_states(bluetooth_rfkill,
540                                           hp_wmi_get_sw_state(HPWMI_BLUETOOTH),
541                                           hp_wmi_get_hw_state(HPWMI_BLUETOOTH));
542                 if (wwan_rfkill)
543                         rfkill_set_states(wwan_rfkill,
544                                           hp_wmi_get_sw_state(HPWMI_WWAN),
545                                           hp_wmi_get_hw_state(HPWMI_WWAN));
546                 break;
547         case HPWMI_CPU_BATTERY_THROTTLE:
548                 pr_info("Unimplemented CPU throttle because of 3 Cell battery event detected\n");
549                 break;
550         case HPWMI_LOCK_SWITCH:
551                 break;
552         default:
553                 pr_info("Unknown event_id - %d - 0x%x\n", event_id, event_data);
554                 break;
555         }
556 }
557
558 static int __init hp_wmi_input_setup(void)
559 {
560         acpi_status status;
561         int err;
562
563         hp_wmi_input_dev = input_allocate_device();
564         if (!hp_wmi_input_dev)
565                 return -ENOMEM;
566
567         hp_wmi_input_dev->name = "HP WMI hotkeys";
568         hp_wmi_input_dev->phys = "wmi/input0";
569         hp_wmi_input_dev->id.bustype = BUS_HOST;
570
571         __set_bit(EV_SW, hp_wmi_input_dev->evbit);
572         __set_bit(SW_DOCK, hp_wmi_input_dev->swbit);
573         __set_bit(SW_TABLET_MODE, hp_wmi_input_dev->swbit);
574
575         err = sparse_keymap_setup(hp_wmi_input_dev, hp_wmi_keymap, NULL);
576         if (err)
577                 goto err_free_dev;
578
579         /* Set initial hardware state */
580         input_report_switch(hp_wmi_input_dev, SW_DOCK, hp_wmi_dock_state());
581         input_report_switch(hp_wmi_input_dev, SW_TABLET_MODE,
582                             hp_wmi_tablet_state());
583         input_sync(hp_wmi_input_dev);
584
585         status = wmi_install_notify_handler(HPWMI_EVENT_GUID, hp_wmi_notify, NULL);
586         if (ACPI_FAILURE(status)) {
587                 err = -EIO;
588                 goto err_free_keymap;
589         }
590
591         err = input_register_device(hp_wmi_input_dev);
592         if (err)
593                 goto err_uninstall_notifier;
594
595         return 0;
596
597  err_uninstall_notifier:
598         wmi_remove_notify_handler(HPWMI_EVENT_GUID);
599  err_free_keymap:
600         sparse_keymap_free(hp_wmi_input_dev);
601  err_free_dev:
602         input_free_device(hp_wmi_input_dev);
603         return err;
604 }
605
606 static void hp_wmi_input_destroy(void)
607 {
608         wmi_remove_notify_handler(HPWMI_EVENT_GUID);
609         sparse_keymap_free(hp_wmi_input_dev);
610         input_unregister_device(hp_wmi_input_dev);
611 }
612
613 static void cleanup_sysfs(struct platform_device *device)
614 {
615         device_remove_file(&device->dev, &dev_attr_display);
616         device_remove_file(&device->dev, &dev_attr_hddtemp);
617         device_remove_file(&device->dev, &dev_attr_als);
618         device_remove_file(&device->dev, &dev_attr_dock);
619         device_remove_file(&device->dev, &dev_attr_tablet);
620 }
621
622 static int __devinit hp_wmi_rfkill_setup(struct platform_device *device)
623 {
624         int err;
625         int wireless = 0;
626
627         err = hp_wmi_perform_query(HPWMI_WIRELESS_QUERY, 0, &wireless,
628                                    sizeof(wireless), sizeof(wireless));
629         if (err)
630                 return err;
631
632         if (wireless & 0x1) {
633                 wifi_rfkill = rfkill_alloc("hp-wifi", &device->dev,
634                                            RFKILL_TYPE_WLAN,
635                                            &hp_wmi_rfkill_ops,
636                                            (void *) HPWMI_WIFI);
637                 if (!wifi_rfkill)
638                         return -ENOMEM;
639                 rfkill_init_sw_state(wifi_rfkill,
640                                      hp_wmi_get_sw_state(HPWMI_WIFI));
641                 rfkill_set_hw_state(wifi_rfkill,
642                                     hp_wmi_get_hw_state(HPWMI_WIFI));
643                 err = rfkill_register(wifi_rfkill);
644                 if (err)
645                         goto register_wifi_error;
646         }
647
648         if (wireless & 0x2) {
649                 bluetooth_rfkill = rfkill_alloc("hp-bluetooth", &device->dev,
650                                                 RFKILL_TYPE_BLUETOOTH,
651                                                 &hp_wmi_rfkill_ops,
652                                                 (void *) HPWMI_BLUETOOTH);
653                 if (!bluetooth_rfkill) {
654                         err = -ENOMEM;
655                         goto register_wifi_error;
656                 }
657                 rfkill_init_sw_state(bluetooth_rfkill,
658                                      hp_wmi_get_sw_state(HPWMI_BLUETOOTH));
659                 rfkill_set_hw_state(bluetooth_rfkill,
660                                     hp_wmi_get_hw_state(HPWMI_BLUETOOTH));
661                 err = rfkill_register(bluetooth_rfkill);
662                 if (err)
663                         goto register_bluetooth_error;
664         }
665
666         if (wireless & 0x4) {
667                 wwan_rfkill = rfkill_alloc("hp-wwan", &device->dev,
668                                            RFKILL_TYPE_WWAN,
669                                            &hp_wmi_rfkill_ops,
670                                            (void *) HPWMI_WWAN);
671                 if (!wwan_rfkill) {
672                         err = -ENOMEM;
673                         goto register_bluetooth_error;
674                 }
675                 rfkill_init_sw_state(wwan_rfkill,
676                                      hp_wmi_get_sw_state(HPWMI_WWAN));
677                 rfkill_set_hw_state(wwan_rfkill,
678                                     hp_wmi_get_hw_state(HPWMI_WWAN));
679                 err = rfkill_register(wwan_rfkill);
680                 if (err)
681                         goto register_wwan_err;
682         }
683
684         return 0;
685 register_wwan_err:
686         rfkill_destroy(wwan_rfkill);
687         wwan_rfkill = NULL;
688         if (bluetooth_rfkill)
689                 rfkill_unregister(bluetooth_rfkill);
690 register_bluetooth_error:
691         rfkill_destroy(bluetooth_rfkill);
692         bluetooth_rfkill = NULL;
693         if (wifi_rfkill)
694                 rfkill_unregister(wifi_rfkill);
695 register_wifi_error:
696         rfkill_destroy(wifi_rfkill);
697         wifi_rfkill = NULL;
698         return err;
699 }
700
701 static int __devinit hp_wmi_rfkill2_setup(struct platform_device *device)
702 {
703         int err, i;
704         struct bios_rfkill2_state state;
705         err = hp_wmi_perform_query(HPWMI_WIRELESS2_QUERY, 0, &state,
706                                    0, sizeof(state));
707         if (err)
708                 return err;
709
710         if (state.count > HPWMI_MAX_RFKILL2_DEVICES) {
711                 pr_warn("unable to parse 0x1b query output\n");
712                 return -EINVAL;
713         }
714
715         for (i = 0; i < state.count; i++) {
716                 struct rfkill *rfkill;
717                 enum rfkill_type type;
718                 char *name;
719                 switch (state.device[i].radio_type) {
720                 case HPWMI_WIFI:
721                         type = RFKILL_TYPE_WLAN;
722                         name = "hp-wifi";
723                         break;
724                 case HPWMI_BLUETOOTH:
725                         type = RFKILL_TYPE_BLUETOOTH;
726                         name = "hp-bluetooth";
727                         break;
728                 case HPWMI_WWAN:
729                         type = RFKILL_TYPE_WWAN;
730                         name = "hp-wwan";
731                         break;
732                 default:
733                         pr_warn("unknown device type 0x%x\n",
734                                 state.device[i].radio_type);
735                         continue;
736                 }
737
738                 if (!state.device[i].vendor_id) {
739                         pr_warn("zero device %d while %d reported\n",
740                                 i, state.count);
741                         continue;
742                 }
743
744                 rfkill = rfkill_alloc(name, &device->dev, type,
745                                       &hp_wmi_rfkill2_ops, (void *)(long)i);
746                 if (!rfkill) {
747                         err = -ENOMEM;
748                         goto fail;
749                 }
750
751                 rfkill2[rfkill2_count].id = state.device[i].rfkill_id;
752                 rfkill2[rfkill2_count].num = i;
753                 rfkill2[rfkill2_count].rfkill = rfkill;
754
755                 rfkill_init_sw_state(rfkill,
756                                      IS_SWBLOCKED(state.device[i].power));
757                 rfkill_set_hw_state(rfkill,
758                                     IS_HWBLOCKED(state.device[i].power));
759
760                 if (!(state.device[i].power & HPWMI_POWER_BIOS))
761                         pr_info("device %s blocked by BIOS\n", name);
762
763                 err = rfkill_register(rfkill);
764                 if (err) {
765                         rfkill_destroy(rfkill);
766                         goto fail;
767                 }
768
769                 rfkill2_count++;
770         }
771
772         return 0;
773 fail:
774         for (; rfkill2_count > 0; rfkill2_count--) {
775                 rfkill_unregister(rfkill2[rfkill2_count - 1].rfkill);
776                 rfkill_destroy(rfkill2[rfkill2_count - 1].rfkill);
777         }
778         return err;
779 }
780
781 static int __devinit hp_wmi_bios_setup(struct platform_device *device)
782 {
783         int err;
784
785         /* clear detected rfkill devices */
786         wifi_rfkill = NULL;
787         bluetooth_rfkill = NULL;
788         wwan_rfkill = NULL;
789         rfkill2_count = 0;
790
791         if (hp_wmi_rfkill_setup(device))
792                 hp_wmi_rfkill2_setup(device);
793
794         err = device_create_file(&device->dev, &dev_attr_display);
795         if (err)
796                 goto add_sysfs_error;
797         err = device_create_file(&device->dev, &dev_attr_hddtemp);
798         if (err)
799                 goto add_sysfs_error;
800         err = device_create_file(&device->dev, &dev_attr_als);
801         if (err)
802                 goto add_sysfs_error;
803         err = device_create_file(&device->dev, &dev_attr_dock);
804         if (err)
805                 goto add_sysfs_error;
806         err = device_create_file(&device->dev, &dev_attr_tablet);
807         if (err)
808                 goto add_sysfs_error;
809         return 0;
810
811 add_sysfs_error:
812         cleanup_sysfs(device);
813         return err;
814 }
815
816 static int __exit hp_wmi_bios_remove(struct platform_device *device)
817 {
818         int i;
819         cleanup_sysfs(device);
820
821         for (i = 0; i < rfkill2_count; i++) {
822                 rfkill_unregister(rfkill2[i].rfkill);
823                 rfkill_destroy(rfkill2[i].rfkill);
824         }
825
826         if (wifi_rfkill) {
827                 rfkill_unregister(wifi_rfkill);
828                 rfkill_destroy(wifi_rfkill);
829         }
830         if (bluetooth_rfkill) {
831                 rfkill_unregister(bluetooth_rfkill);
832                 rfkill_destroy(bluetooth_rfkill);
833         }
834         if (wwan_rfkill) {
835                 rfkill_unregister(wwan_rfkill);
836                 rfkill_destroy(wwan_rfkill);
837         }
838
839         return 0;
840 }
841
842 static int hp_wmi_resume_handler(struct device *device)
843 {
844         /*
845          * Hardware state may have changed while suspended, so trigger
846          * input events for the current state. As this is a switch,
847          * the input layer will only actually pass it on if the state
848          * changed.
849          */
850         if (hp_wmi_input_dev) {
851                 input_report_switch(hp_wmi_input_dev, SW_DOCK,
852                                     hp_wmi_dock_state());
853                 input_report_switch(hp_wmi_input_dev, SW_TABLET_MODE,
854                                     hp_wmi_tablet_state());
855                 input_sync(hp_wmi_input_dev);
856         }
857
858         if (rfkill2_count)
859                 hp_wmi_rfkill2_refresh();
860
861         if (wifi_rfkill)
862                 rfkill_set_states(wifi_rfkill,
863                                   hp_wmi_get_sw_state(HPWMI_WIFI),
864                                   hp_wmi_get_hw_state(HPWMI_WIFI));
865         if (bluetooth_rfkill)
866                 rfkill_set_states(bluetooth_rfkill,
867                                   hp_wmi_get_sw_state(HPWMI_BLUETOOTH),
868                                   hp_wmi_get_hw_state(HPWMI_BLUETOOTH));
869         if (wwan_rfkill)
870                 rfkill_set_states(wwan_rfkill,
871                                   hp_wmi_get_sw_state(HPWMI_WWAN),
872                                   hp_wmi_get_hw_state(HPWMI_WWAN));
873
874         return 0;
875 }
876
877 static int __init hp_wmi_init(void)
878 {
879         int err;
880         int event_capable = wmi_has_guid(HPWMI_EVENT_GUID);
881         int bios_capable = wmi_has_guid(HPWMI_BIOS_GUID);
882
883         if (event_capable) {
884                 err = hp_wmi_input_setup();
885                 if (err)
886                         return err;
887         }
888
889         if (bios_capable) {
890                 err = platform_driver_register(&hp_wmi_driver);
891                 if (err)
892                         goto err_driver_reg;
893                 hp_wmi_platform_dev = platform_device_alloc("hp-wmi", -1);
894                 if (!hp_wmi_platform_dev) {
895                         err = -ENOMEM;
896                         goto err_device_alloc;
897                 }
898                 err = platform_device_add(hp_wmi_platform_dev);
899                 if (err)
900                         goto err_device_add;
901         }
902
903         if (!bios_capable && !event_capable)
904                 return -ENODEV;
905
906         return 0;
907
908 err_device_add:
909         platform_device_put(hp_wmi_platform_dev);
910 err_device_alloc:
911         platform_driver_unregister(&hp_wmi_driver);
912 err_driver_reg:
913         if (event_capable)
914                 hp_wmi_input_destroy();
915
916         return err;
917 }
918
919 static void __exit hp_wmi_exit(void)
920 {
921         if (wmi_has_guid(HPWMI_EVENT_GUID))
922                 hp_wmi_input_destroy();
923
924         if (hp_wmi_platform_dev) {
925                 platform_device_unregister(hp_wmi_platform_dev);
926                 platform_driver_unregister(&hp_wmi_driver);
927         }
928 }
929
930 module_init(hp_wmi_init);
931 module_exit(hp_wmi_exit);