hp-wmi: add rfkill support for wireless query 0x1b
[linux-2.6.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 #include <linux/kernel.h>
28 #include <linux/module.h>
29 #include <linux/init.h>
30 #include <linux/slab.h>
31 #include <linux/types.h>
32 #include <linux/input.h>
33 #include <linux/input/sparse-keymap.h>
34 #include <linux/platform_device.h>
35 #include <linux/acpi.h>
36 #include <linux/rfkill.h>
37 #include <linux/string.h>
38
39 MODULE_AUTHOR("Matthew Garrett <mjg59@srcf.ucam.org>");
40 MODULE_DESCRIPTION("HP laptop WMI hotkeys driver");
41 MODULE_LICENSE("GPL");
42
43 MODULE_ALIAS("wmi:95F24279-4D7B-4334-9387-ACCDC67EF61C");
44 MODULE_ALIAS("wmi:5FB7F034-2C63-45e9-BE91-3D44E2C707E4");
45
46 #define HPWMI_EVENT_GUID "95F24279-4D7B-4334-9387-ACCDC67EF61C"
47 #define HPWMI_BIOS_GUID "5FB7F034-2C63-45e9-BE91-3D44E2C707E4"
48
49 #define HPWMI_DISPLAY_QUERY 0x1
50 #define HPWMI_HDDTEMP_QUERY 0x2
51 #define HPWMI_ALS_QUERY 0x3
52 #define HPWMI_HARDWARE_QUERY 0x4
53 #define HPWMI_WIRELESS_QUERY 0x5
54 #define HPWMI_HOTKEY_QUERY 0xc
55 #define HPWMI_WIRELESS2_QUERY 0x1b
56
57 #define PREFIX "HP WMI: "
58 #define UNIMP "Unimplemented "
59
60 enum hp_wmi_radio {
61         HPWMI_WIFI = 0,
62         HPWMI_BLUETOOTH = 1,
63         HPWMI_WWAN = 2,
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 __devinit 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, 0x231b, { KEY_HELP } },
142         { KE_END, 0 }
143 };
144
145 static struct input_dev *hp_wmi_input_dev;
146 static struct platform_device *hp_wmi_platform_dev;
147
148 static struct rfkill *wifi_rfkill;
149 static struct rfkill *bluetooth_rfkill;
150 static struct rfkill *wwan_rfkill;
151
152 struct rfkill2_device {
153         u8 id;
154         int num;
155         struct rfkill *rfkill;
156 };
157
158 static int rfkill2_count;
159 static struct rfkill2_device rfkill2[HPWMI_MAX_RFKILL2_DEVICES];
160
161 static const struct dev_pm_ops hp_wmi_pm_ops = {
162         .resume  = hp_wmi_resume_handler,
163         .restore  = hp_wmi_resume_handler,
164 };
165
166 static struct platform_driver hp_wmi_driver = {
167         .driver = {
168                 .name = "hp-wmi",
169                 .owner = THIS_MODULE,
170                 .pm = &hp_wmi_pm_ops,
171         },
172         .probe = hp_wmi_bios_setup,
173         .remove = hp_wmi_bios_remove,
174 };
175
176 /*
177  * hp_wmi_perform_query
178  *
179  * query:       The commandtype -> What should be queried
180  * write:       The command -> 0 read, 1 write, 3 ODM specific
181  * buffer:      Buffer used as input and/or output
182  * insize:      Size of input buffer
183  * outsize:     Size of output buffer
184  *
185  * returns zero on success
186  *         an HP WMI query specific error code (which is positive)
187  *         -EINVAL if the query was not successful at all
188  *         -EINVAL if the output buffer size exceeds buffersize
189  *
190  * Note: The buffersize must at least be the maximum of the input and output
191  *       size. E.g. Battery info query (0x7) is defined to have 1 byte input
192  *       and 128 byte output. The caller would do:
193  *       buffer = kzalloc(128, GFP_KERNEL);
194  *       ret = hp_wmi_perform_query(0x7, 0, buffer, 1, 128)
195  */
196 static int hp_wmi_perform_query(int query, int write, void *buffer,
197                                 int insize, int outsize)
198 {
199         struct bios_return *bios_return;
200         int actual_outsize;
201         union acpi_object *obj;
202         struct bios_args args = {
203                 .signature = 0x55434553,
204                 .command = write ? 0x2 : 0x1,
205                 .commandtype = query,
206                 .datasize = insize,
207                 .data = 0,
208         };
209         struct acpi_buffer input = { sizeof(struct bios_args), &args };
210         struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
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
229         if (bios_return->return_code) {
230                 if (bios_return->return_code != HPWMI_RET_UNKNOWN_CMDTYPE)
231                         printk(KERN_WARNING PREFIX "query 0x%x returned "
232                                                    "error 0x%x\n",
233                                query, bios_return->return_code);
234                 kfree(obj);
235                 return bios_return->return_code;
236         }
237
238         if (!outsize) {
239                 /* ignore output data */
240                 kfree(obj);
241                 return 0;
242         }
243
244         actual_outsize = min(outsize, (int)(obj->buffer.length - sizeof(*bios_return)));
245         memcpy(buffer, obj->buffer.pointer + sizeof(*bios_return), actual_outsize);
246         memset(buffer + actual_outsize, 0, outsize - actual_outsize);
247         kfree(obj);
248         return 0;
249 }
250
251 static int hp_wmi_display_state(void)
252 {
253         int state = 0;
254         int ret = hp_wmi_perform_query(HPWMI_DISPLAY_QUERY, 0, &state,
255                                        sizeof(state), sizeof(state));
256         if (ret)
257                 return -EINVAL;
258         return state;
259 }
260
261 static int hp_wmi_hddtemp_state(void)
262 {
263         int state = 0;
264         int ret = hp_wmi_perform_query(HPWMI_HDDTEMP_QUERY, 0, &state,
265                                        sizeof(state), sizeof(state));
266         if (ret)
267                 return -EINVAL;
268         return state;
269 }
270
271 static int hp_wmi_als_state(void)
272 {
273         int state = 0;
274         int ret = hp_wmi_perform_query(HPWMI_ALS_QUERY, 0, &state,
275                                        sizeof(state), sizeof(state));
276         if (ret)
277                 return -EINVAL;
278         return state;
279 }
280
281 static int hp_wmi_dock_state(void)
282 {
283         int state = 0;
284         int ret = hp_wmi_perform_query(HPWMI_HARDWARE_QUERY, 0, &state,
285                                        sizeof(state), sizeof(state));
286
287         if (ret)
288                 return -EINVAL;
289
290         return state & 0x1;
291 }
292
293 static int hp_wmi_tablet_state(void)
294 {
295         int state = 0;
296         int ret = hp_wmi_perform_query(HPWMI_HARDWARE_QUERY, 0, &state,
297                                        sizeof(state), sizeof(state));
298         if (ret)
299                 return ret;
300
301         return (state & 0x4) ? 1 : 0;
302 }
303
304 static int hp_wmi_set_block(void *data, bool blocked)
305 {
306         enum hp_wmi_radio r = (enum hp_wmi_radio) data;
307         int query = BIT(r + 8) | ((!blocked) << r);
308         int ret;
309
310         ret = hp_wmi_perform_query(HPWMI_WIRELESS_QUERY, 1,
311                                    &query, sizeof(query), 0);
312         if (ret)
313                 return -EINVAL;
314         return 0;
315 }
316
317 static const struct rfkill_ops hp_wmi_rfkill_ops = {
318         .set_block = hp_wmi_set_block,
319 };
320
321 static bool hp_wmi_get_sw_state(enum hp_wmi_radio r)
322 {
323         int wireless = 0;
324         int mask;
325         hp_wmi_perform_query(HPWMI_WIRELESS_QUERY, 0,
326                              &wireless, sizeof(wireless),
327                              sizeof(wireless));
328         /* TBD: Pass error */
329
330         mask = 0x200 << (r * 8);
331
332         if (wireless & mask)
333                 return false;
334         else
335                 return true;
336 }
337
338 static bool hp_wmi_get_hw_state(enum hp_wmi_radio r)
339 {
340         int wireless = 0;
341         int mask;
342         hp_wmi_perform_query(HPWMI_WIRELESS_QUERY, 0,
343                              &wireless, sizeof(wireless),
344                              sizeof(wireless));
345         /* TBD: Pass error */
346
347         mask = 0x800 << (r * 8);
348
349         if (wireless & mask)
350                 return false;
351         else
352                 return true;
353 }
354
355 static int hp_wmi_rfkill2_set_block(void *data, bool blocked)
356 {
357         int rfkill_id = (int)(long)data;
358         char buffer[4] = { 0x01, 0x00, rfkill_id, !blocked };
359
360         if (hp_wmi_perform_query(HPWMI_WIRELESS2_QUERY, 1,
361                                    buffer, sizeof(buffer), 0))
362                 return -EINVAL;
363         return 0;
364 }
365
366 static const struct rfkill_ops hp_wmi_rfkill2_ops = {
367         .set_block = hp_wmi_rfkill2_set_block,
368 };
369
370 static int hp_wmi_rfkill2_refresh(void)
371 {
372         int err, i;
373         struct bios_rfkill2_state state;
374
375         err = hp_wmi_perform_query(HPWMI_WIRELESS2_QUERY, 0, &state,
376                                    0, sizeof(state));
377         if (err)
378                 return err;
379
380         for (i = 0; i < rfkill2_count; i++) {
381                 int num = rfkill2[i].num;
382                 struct bios_rfkill2_device_state *devstate;
383                 devstate = &state.device[num];
384
385                 if (num >= state.count ||
386                     devstate->rfkill_id != rfkill2[i].id) {
387                         printk(KERN_WARNING PREFIX "power configuration of "
388                                "the wireless devices unexpectedly changed\n");
389                         continue;
390                 }
391
392                 rfkill_set_states(rfkill2[i].rfkill,
393                                   IS_SWBLOCKED(devstate->power),
394                                   IS_HWBLOCKED(devstate->power));
395         }
396
397         return 0;
398 }
399
400 static ssize_t show_display(struct device *dev, struct device_attribute *attr,
401                             char *buf)
402 {
403         int value = hp_wmi_display_state();
404         if (value < 0)
405                 return -EINVAL;
406         return sprintf(buf, "%d\n", value);
407 }
408
409 static ssize_t show_hddtemp(struct device *dev, struct device_attribute *attr,
410                             char *buf)
411 {
412         int value = hp_wmi_hddtemp_state();
413         if (value < 0)
414                 return -EINVAL;
415         return sprintf(buf, "%d\n", value);
416 }
417
418 static ssize_t show_als(struct device *dev, struct device_attribute *attr,
419                         char *buf)
420 {
421         int value = hp_wmi_als_state();
422         if (value < 0)
423                 return -EINVAL;
424         return sprintf(buf, "%d\n", value);
425 }
426
427 static ssize_t show_dock(struct device *dev, struct device_attribute *attr,
428                          char *buf)
429 {
430         int value = hp_wmi_dock_state();
431         if (value < 0)
432                 return -EINVAL;
433         return sprintf(buf, "%d\n", value);
434 }
435
436 static ssize_t show_tablet(struct device *dev, struct device_attribute *attr,
437                          char *buf)
438 {
439         int value = hp_wmi_tablet_state();
440         if (value < 0)
441                 return -EINVAL;
442         return sprintf(buf, "%d\n", value);
443 }
444
445 static ssize_t set_als(struct device *dev, struct device_attribute *attr,
446                        const char *buf, size_t count)
447 {
448         u32 tmp = simple_strtoul(buf, NULL, 10);
449         int ret = hp_wmi_perform_query(HPWMI_ALS_QUERY, 1, &tmp,
450                                        sizeof(tmp), sizeof(tmp));
451         if (ret)
452                 return -EINVAL;
453
454         return count;
455 }
456
457 static DEVICE_ATTR(display, S_IRUGO, show_display, NULL);
458 static DEVICE_ATTR(hddtemp, S_IRUGO, show_hddtemp, NULL);
459 static DEVICE_ATTR(als, S_IRUGO | S_IWUSR, show_als, set_als);
460 static DEVICE_ATTR(dock, S_IRUGO, show_dock, NULL);
461 static DEVICE_ATTR(tablet, S_IRUGO, show_tablet, NULL);
462
463 static void hp_wmi_notify(u32 value, void *context)
464 {
465         struct acpi_buffer response = { ACPI_ALLOCATE_BUFFER, NULL };
466         union acpi_object *obj;
467         u32 event_id, event_data;
468         int key_code = 0, ret;
469         u32 *location;
470         acpi_status status;
471
472         status = wmi_get_event_data(value, &response);
473         if (status != AE_OK) {
474                 printk(KERN_INFO PREFIX "bad event status 0x%x\n", status);
475                 return;
476         }
477
478         obj = (union acpi_object *)response.pointer;
479
480         if (!obj)
481                 return;
482         if (obj->type != ACPI_TYPE_BUFFER) {
483                 printk(KERN_INFO "hp-wmi: Unknown response received %d\n",
484                        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                 printk(KERN_INFO "hp-wmi: Unknown buffer length %d\n",
502                        obj->buffer.length);
503                 kfree(obj);
504                 return;
505         }
506         kfree(obj);
507
508         switch (event_id) {
509         case HPWMI_DOCK_EVENT:
510                 input_report_switch(hp_wmi_input_dev, SW_DOCK,
511                                     hp_wmi_dock_state());
512                 input_report_switch(hp_wmi_input_dev, SW_TABLET_MODE,
513                                     hp_wmi_tablet_state());
514                 input_sync(hp_wmi_input_dev);
515                 break;
516         case HPWMI_PARK_HDD:
517                 break;
518         case HPWMI_SMART_ADAPTER:
519                 break;
520         case HPWMI_BEZEL_BUTTON:
521                 ret = hp_wmi_perform_query(HPWMI_HOTKEY_QUERY, 0,
522                                            &key_code,
523                                            sizeof(key_code),
524                                            sizeof(key_code));
525                 if (ret)
526                         break;
527
528                 if (!sparse_keymap_report_event(hp_wmi_input_dev,
529                                                 key_code, 1, true))
530                         printk(KERN_INFO PREFIX "Unknown key code - 0x%x\n",
531                                key_code);
532                 break;
533         case HPWMI_WIRELESS:
534                 if (rfkill2_count) {
535                         hp_wmi_rfkill2_refresh();
536                         break;
537                 }
538
539                 if (wifi_rfkill)
540                         rfkill_set_states(wifi_rfkill,
541                                           hp_wmi_get_sw_state(HPWMI_WIFI),
542                                           hp_wmi_get_hw_state(HPWMI_WIFI));
543                 if (bluetooth_rfkill)
544                         rfkill_set_states(bluetooth_rfkill,
545                                           hp_wmi_get_sw_state(HPWMI_BLUETOOTH),
546                                           hp_wmi_get_hw_state(HPWMI_BLUETOOTH));
547                 if (wwan_rfkill)
548                         rfkill_set_states(wwan_rfkill,
549                                           hp_wmi_get_sw_state(HPWMI_WWAN),
550                                           hp_wmi_get_hw_state(HPWMI_WWAN));
551                 break;
552         case HPWMI_CPU_BATTERY_THROTTLE:
553                 printk(KERN_INFO PREFIX UNIMP "CPU throttle because of 3 Cell"
554                        " battery event detected\n");
555                 break;
556         case HPWMI_LOCK_SWITCH:
557                 break;
558         default:
559                 printk(KERN_INFO PREFIX "Unknown event_id - %d - 0x%x\n",
560                        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 __devinit 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                 rfkill_init_sw_state(wifi_rfkill,
645                                      hp_wmi_get_sw_state(HPWMI_WIFI));
646                 rfkill_set_hw_state(wifi_rfkill,
647                                     hp_wmi_get_hw_state(HPWMI_WIFI));
648                 err = rfkill_register(wifi_rfkill);
649                 if (err)
650                         goto register_wifi_error;
651         }
652
653         if (wireless & 0x2) {
654                 bluetooth_rfkill = rfkill_alloc("hp-bluetooth", &device->dev,
655                                                 RFKILL_TYPE_BLUETOOTH,
656                                                 &hp_wmi_rfkill_ops,
657                                                 (void *) HPWMI_BLUETOOTH);
658                 rfkill_init_sw_state(bluetooth_rfkill,
659                                      hp_wmi_get_sw_state(HPWMI_BLUETOOTH));
660                 rfkill_set_hw_state(bluetooth_rfkill,
661                                     hp_wmi_get_hw_state(HPWMI_BLUETOOTH));
662                 err = rfkill_register(bluetooth_rfkill);
663                 if (err)
664                         goto register_bluetooth_error;
665         }
666
667         if (wireless & 0x4) {
668                 wwan_rfkill = rfkill_alloc("hp-wwan", &device->dev,
669                                            RFKILL_TYPE_WWAN,
670                                            &hp_wmi_rfkill_ops,
671                                            (void *) HPWMI_WWAN);
672                 rfkill_init_sw_state(wwan_rfkill,
673                                      hp_wmi_get_sw_state(HPWMI_WWAN));
674                 rfkill_set_hw_state(wwan_rfkill,
675                                     hp_wmi_get_hw_state(HPWMI_WWAN));
676                 err = rfkill_register(wwan_rfkill);
677                 if (err)
678                         goto register_wwan_err;
679         }
680
681         return 0;
682 register_wwan_err:
683         rfkill_destroy(wwan_rfkill);
684         wwan_rfkill = NULL;
685         if (bluetooth_rfkill)
686                 rfkill_unregister(bluetooth_rfkill);
687 register_bluetooth_error:
688         rfkill_destroy(bluetooth_rfkill);
689         bluetooth_rfkill = NULL;
690         if (wifi_rfkill)
691                 rfkill_unregister(wifi_rfkill);
692 register_wifi_error:
693         rfkill_destroy(wifi_rfkill);
694         wifi_rfkill = NULL;
695         return err;
696 }
697
698 static int __devinit hp_wmi_rfkill2_setup(struct platform_device *device)
699 {
700         int err, i;
701         struct bios_rfkill2_state state;
702         err = hp_wmi_perform_query(HPWMI_WIRELESS2_QUERY, 0, &state,
703                                    0, sizeof(state));
704         if (err)
705                 return err;
706
707         if (state.count > HPWMI_MAX_RFKILL2_DEVICES) {
708                 printk(KERN_WARNING PREFIX "unable to parse 0x1b query output\n");
709                 return -EINVAL;
710         }
711
712         for (i = 0; i < state.count; i++) {
713                 struct rfkill *rfkill;
714                 enum rfkill_type type;
715                 char *name;
716                 switch (state.device[i].radio_type) {
717                 case HPWMI_WIFI:
718                         type = RFKILL_TYPE_WLAN;
719                         name = "hp-wifi";
720                         break;
721                 case HPWMI_BLUETOOTH:
722                         type = RFKILL_TYPE_BLUETOOTH;
723                         name = "hp-bluetooth";
724                         break;
725                 case HPWMI_WWAN:
726                         type = RFKILL_TYPE_WWAN;
727                         name = "hp-wwan";
728                         break;
729                 default:
730                         printk(KERN_WARNING PREFIX "unknown device type 0x%x\n",
731                                  state.device[i].radio_type);
732                         continue;
733                 }
734
735                 if (!state.device[i].vendor_id) {
736                         printk(KERN_WARNING PREFIX "zero device %d while %d "
737                                "reported\n", i, state.count);
738                         continue;
739                 }
740
741                 rfkill = rfkill_alloc(name, &device->dev, type,
742                                       &hp_wmi_rfkill2_ops, (void *)(long)i);
743                 if (!rfkill) {
744                         err = -ENOMEM;
745                         goto fail;
746                 }
747
748                 rfkill2[rfkill2_count].id = state.device[i].rfkill_id;
749                 rfkill2[rfkill2_count].num = i;
750                 rfkill2[rfkill2_count].rfkill = rfkill;
751
752                 rfkill_init_sw_state(rfkill,
753                                      IS_SWBLOCKED(state.device[i].power));
754                 rfkill_set_hw_state(rfkill,
755                                     IS_HWBLOCKED(state.device[i].power));
756
757                 if (!(state.device[i].power & HPWMI_POWER_BIOS))
758                         printk(KERN_INFO PREFIX "device %s blocked by BIOS\n",
759                                name);
760
761                 err = rfkill_register(rfkill);
762                 if (err) {
763                         rfkill_destroy(rfkill);
764                         goto fail;
765                 }
766
767                 rfkill2_count++;
768         }
769
770         return 0;
771 fail:
772         for (; rfkill2_count > 0; rfkill2_count--) {
773                 rfkill_unregister(rfkill2[rfkill2_count - 1].rfkill);
774                 rfkill_destroy(rfkill2[rfkill2_count - 1].rfkill);
775         }
776         return err;
777 }
778
779 static int __devinit hp_wmi_bios_setup(struct platform_device *device)
780 {
781         int err;
782
783         /* clear detected rfkill devices */
784         wifi_rfkill = NULL;
785         bluetooth_rfkill = NULL;
786         wwan_rfkill = NULL;
787         rfkill2_count = 0;
788
789         if (hp_wmi_rfkill_setup(device))
790                 hp_wmi_rfkill2_setup(device);
791
792         err = device_create_file(&device->dev, &dev_attr_display);
793         if (err)
794                 goto add_sysfs_error;
795         err = device_create_file(&device->dev, &dev_attr_hddtemp);
796         if (err)
797                 goto add_sysfs_error;
798         err = device_create_file(&device->dev, &dev_attr_als);
799         if (err)
800                 goto add_sysfs_error;
801         err = device_create_file(&device->dev, &dev_attr_dock);
802         if (err)
803                 goto add_sysfs_error;
804         err = device_create_file(&device->dev, &dev_attr_tablet);
805         if (err)
806                 goto add_sysfs_error;
807         return 0;
808
809 add_sysfs_error:
810         cleanup_sysfs(device);
811         return err;
812 }
813
814 static int __exit hp_wmi_bios_remove(struct platform_device *device)
815 {
816         int i;
817         cleanup_sysfs(device);
818
819         for (i = 0; i < rfkill2_count; i++) {
820                 rfkill_unregister(rfkill2[i].rfkill);
821                 rfkill_destroy(rfkill2[i].rfkill);
822         }
823
824         if (wifi_rfkill) {
825                 rfkill_unregister(wifi_rfkill);
826                 rfkill_destroy(wifi_rfkill);
827         }
828         if (bluetooth_rfkill) {
829                 rfkill_unregister(bluetooth_rfkill);
830                 rfkill_destroy(bluetooth_rfkill);
831         }
832         if (wwan_rfkill) {
833                 rfkill_unregister(wwan_rfkill);
834                 rfkill_destroy(wwan_rfkill);
835         }
836
837         return 0;
838 }
839
840 static int hp_wmi_resume_handler(struct device *device)
841 {
842         /*
843          * Hardware state may have changed while suspended, so trigger
844          * input events for the current state. As this is a switch,
845          * the input layer will only actually pass it on if the state
846          * changed.
847          */
848         if (hp_wmi_input_dev) {
849                 input_report_switch(hp_wmi_input_dev, SW_DOCK,
850                                     hp_wmi_dock_state());
851                 input_report_switch(hp_wmi_input_dev, SW_TABLET_MODE,
852                                     hp_wmi_tablet_state());
853                 input_sync(hp_wmi_input_dev);
854         }
855
856         if (rfkill2_count)
857                 hp_wmi_rfkill2_refresh();
858
859         if (wifi_rfkill)
860                 rfkill_set_states(wifi_rfkill,
861                                   hp_wmi_get_sw_state(HPWMI_WIFI),
862                                   hp_wmi_get_hw_state(HPWMI_WIFI));
863         if (bluetooth_rfkill)
864                 rfkill_set_states(bluetooth_rfkill,
865                                   hp_wmi_get_sw_state(HPWMI_BLUETOOTH),
866                                   hp_wmi_get_hw_state(HPWMI_BLUETOOTH));
867         if (wwan_rfkill)
868                 rfkill_set_states(wwan_rfkill,
869                                   hp_wmi_get_sw_state(HPWMI_WWAN),
870                                   hp_wmi_get_hw_state(HPWMI_WWAN));
871
872         return 0;
873 }
874
875 static int __init hp_wmi_init(void)
876 {
877         int err;
878         int event_capable = wmi_has_guid(HPWMI_EVENT_GUID);
879         int bios_capable = wmi_has_guid(HPWMI_BIOS_GUID);
880
881         if (event_capable) {
882                 err = hp_wmi_input_setup();
883                 if (err)
884                         return err;
885         }
886
887         if (bios_capable) {
888                 err = platform_driver_register(&hp_wmi_driver);
889                 if (err)
890                         goto err_driver_reg;
891                 hp_wmi_platform_dev = platform_device_alloc("hp-wmi", -1);
892                 if (!hp_wmi_platform_dev) {
893                         err = -ENOMEM;
894                         goto err_device_alloc;
895                 }
896                 err = platform_device_add(hp_wmi_platform_dev);
897                 if (err)
898                         goto err_device_add;
899         }
900
901         if (!bios_capable && !event_capable)
902                 return -ENODEV;
903
904         return 0;
905
906 err_device_add:
907         platform_device_put(hp_wmi_platform_dev);
908 err_device_alloc:
909         platform_driver_unregister(&hp_wmi_driver);
910 err_driver_reg:
911         if (event_capable)
912                 hp_wmi_input_destroy();
913
914         return err;
915 }
916
917 static void __exit hp_wmi_exit(void)
918 {
919         if (wmi_has_guid(HPWMI_EVENT_GUID))
920                 hp_wmi_input_destroy();
921
922         if (hp_wmi_platform_dev) {
923                 platform_device_unregister(hp_wmi_platform_dev);
924                 platform_driver_unregister(&hp_wmi_driver);
925         }
926 }
927
928 module_init(hp_wmi_init);
929 module_exit(hp_wmi_exit);