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Merge tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost
[cris-mirror.git] / drivers / platform / x86 / asus-wmi.c
bloba32c5c00e0e7bdf9868e81c655f30f8fb6cc34be
1 /*
2 * Asus PC WMI hotkey driver
3 *
4 * Copyright(C) 2010 Intel Corporation.
5 * Copyright(C) 2010-2011 Corentin Chary <corentin.chary@gmail.com>
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/types.h>
33 #include <linux/slab.h>
34 #include <linux/input.h>
35 #include <linux/input/sparse-keymap.h>
36 #include <linux/fb.h>
37 #include <linux/backlight.h>
38 #include <linux/leds.h>
39 #include <linux/rfkill.h>
40 #include <linux/pci.h>
41 #include <linux/pci_hotplug.h>
42 #include <linux/hwmon.h>
43 #include <linux/hwmon-sysfs.h>
44 #include <linux/debugfs.h>
45 #include <linux/seq_file.h>
46 #include <linux/platform_device.h>
47 #include <linux/thermal.h>
48 #include <linux/acpi.h>
49 #include <linux/dmi.h>
50 #include <acpi/video.h>
51
52 #include "asus-wmi.h"
53
54 MODULE_AUTHOR("Corentin Chary <corentin.chary@gmail.com>, "
55 "Yong Wang <yong.y.wang@intel.com>");
56 MODULE_DESCRIPTION("Asus Generic WMI Driver");
57 MODULE_LICENSE("GPL");
58
59 #define to_asus_wmi_driver(pdrv) \
60 (container_of((pdrv), struct asus_wmi_driver, platform_driver))
61
62 #define ASUS_WMI_MGMT_GUID "97845ED0-4E6D-11DE-8A39-0800200C9A66"
63
64 #define NOTIFY_BRNUP_MIN 0x11
65 #define NOTIFY_BRNUP_MAX 0x1f
66 #define NOTIFY_BRNDOWN_MIN 0x20
67 #define NOTIFY_BRNDOWN_MAX 0x2e
68 #define NOTIFY_KBD_BRTUP 0xc4
69 #define NOTIFY_KBD_BRTDWN 0xc5
70
71 /* WMI Methods */
72 #define ASUS_WMI_METHODID_SPEC 0x43455053 /* BIOS SPECification */
73 #define ASUS_WMI_METHODID_SFBD 0x44424653 /* Set First Boot Device */
74 #define ASUS_WMI_METHODID_GLCD 0x44434C47 /* Get LCD status */
75 #define ASUS_WMI_METHODID_GPID 0x44495047 /* Get Panel ID?? (Resol) */
76 #define ASUS_WMI_METHODID_QMOD 0x444F4D51 /* Quiet MODe */
77 #define ASUS_WMI_METHODID_SPLV 0x4C425053 /* Set Panel Light Value */
78 #define ASUS_WMI_METHODID_AGFN 0x4E464741 /* FaN? */
79 #define ASUS_WMI_METHODID_SFUN 0x4E554653 /* FUNCtionalities */
80 #define ASUS_WMI_METHODID_SDSP 0x50534453 /* Set DiSPlay output */
81 #define ASUS_WMI_METHODID_GDSP 0x50534447 /* Get DiSPlay output */
82 #define ASUS_WMI_METHODID_DEVP 0x50564544 /* DEVice Policy */
83 #define ASUS_WMI_METHODID_OSVR 0x5256534F /* OS VeRsion */
84 #define ASUS_WMI_METHODID_DSTS 0x53544344 /* Device STatuS */
85 #define ASUS_WMI_METHODID_DSTS2 0x53545344 /* Device STatuS #2*/
86 #define ASUS_WMI_METHODID_BSTS 0x53545342 /* Bios STatuS ? */
87 #define ASUS_WMI_METHODID_DEVS 0x53564544 /* DEVice Set */
88 #define ASUS_WMI_METHODID_CFVS 0x53564643 /* CPU Frequency Volt Set */
89 #define ASUS_WMI_METHODID_KBFT 0x5446424B /* KeyBoard FilTer */
90 #define ASUS_WMI_METHODID_INIT 0x54494E49 /* INITialize */
91 #define ASUS_WMI_METHODID_HKEY 0x59454B48 /* Hot KEY ?? */
92
93 #define ASUS_WMI_UNSUPPORTED_METHOD 0xFFFFFFFE
94
95 /* Wireless */
96 #define ASUS_WMI_DEVID_HW_SWITCH 0x00010001
97 #define ASUS_WMI_DEVID_WIRELESS_LED 0x00010002
98 #define ASUS_WMI_DEVID_CWAP 0x00010003
99 #define ASUS_WMI_DEVID_WLAN 0x00010011
100 #define ASUS_WMI_DEVID_WLAN_LED 0x00010012
101 #define ASUS_WMI_DEVID_BLUETOOTH 0x00010013
102 #define ASUS_WMI_DEVID_GPS 0x00010015
103 #define ASUS_WMI_DEVID_WIMAX 0x00010017
104 #define ASUS_WMI_DEVID_WWAN3G 0x00010019
105 #define ASUS_WMI_DEVID_UWB 0x00010021
106
107 /* Leds */
108 /* 0x000200XX and 0x000400XX */
109 #define ASUS_WMI_DEVID_LED1 0x00020011
110 #define ASUS_WMI_DEVID_LED2 0x00020012
111 #define ASUS_WMI_DEVID_LED3 0x00020013
112 #define ASUS_WMI_DEVID_LED4 0x00020014
113 #define ASUS_WMI_DEVID_LED5 0x00020015
114 #define ASUS_WMI_DEVID_LED6 0x00020016
115
116 /* Backlight and Brightness */
117 #define ASUS_WMI_DEVID_ALS_ENABLE 0x00050001 /* Ambient Light Sensor */
118 #define ASUS_WMI_DEVID_BACKLIGHT 0x00050011
119 #define ASUS_WMI_DEVID_BRIGHTNESS 0x00050012
120 #define ASUS_WMI_DEVID_KBD_BACKLIGHT 0x00050021
121 #define ASUS_WMI_DEVID_LIGHT_SENSOR 0x00050022 /* ?? */
122 #define ASUS_WMI_DEVID_LIGHTBAR 0x00050025
123
124 /* Misc */
125 #define ASUS_WMI_DEVID_CAMERA 0x00060013
126
127 /* Storage */
128 #define ASUS_WMI_DEVID_CARDREADER 0x00080013
129
130 /* Input */
131 #define ASUS_WMI_DEVID_TOUCHPAD 0x00100011
132 #define ASUS_WMI_DEVID_TOUCHPAD_LED 0x00100012
133
134 /* Fan, Thermal */
135 #define ASUS_WMI_DEVID_THERMAL_CTRL 0x00110011
136 #define ASUS_WMI_DEVID_FAN_CTRL 0x00110012
137
138 /* Power */
139 #define ASUS_WMI_DEVID_PROCESSOR_STATE 0x00120012
140
141 /* Deep S3 / Resume on LID open */
142 #define ASUS_WMI_DEVID_LID_RESUME 0x00120031
143
144 /* DSTS masks */
145 #define ASUS_WMI_DSTS_STATUS_BIT 0x00000001
146 #define ASUS_WMI_DSTS_UNKNOWN_BIT 0x00000002
147 #define ASUS_WMI_DSTS_PRESENCE_BIT 0x00010000
148 #define ASUS_WMI_DSTS_USER_BIT 0x00020000
149 #define ASUS_WMI_DSTS_BIOS_BIT 0x00040000
150 #define ASUS_WMI_DSTS_BRIGHTNESS_MASK 0x000000FF
151 #define ASUS_WMI_DSTS_MAX_BRIGTH_MASK 0x0000FF00
152 #define ASUS_WMI_DSTS_LIGHTBAR_MASK 0x0000000F
153
154 #define ASUS_FAN_DESC "cpu_fan"
155 #define ASUS_FAN_MFUN 0x13
156 #define ASUS_FAN_SFUN_READ 0x06
157 #define ASUS_FAN_SFUN_WRITE 0x07
158 #define ASUS_FAN_CTRL_MANUAL 1
159 #define ASUS_FAN_CTRL_AUTO 2
160
161 #define USB_INTEL_XUSB2PR 0xD0
162 #define PCI_DEVICE_ID_INTEL_LYNXPOINT_LP_XHCI 0x9c31
163
164 static const char * const ashs_ids[] = { "ATK4001", "ATK4002", NULL };
165
166 struct bios_args {
167 u32 arg0;
168 u32 arg1;
169 } __packed;
170
171 /*
172 * Struct that's used for all methods called via AGFN. Naming is
173 * identically to the AML code.
174 */
175 struct agfn_args {
176 u16 mfun; /* probably "Multi-function" to be called */
177 u16 sfun; /* probably "Sub-function" to be called */
178 u16 len; /* size of the hole struct, including subfunction fields */
179 u8 stas; /* not used by now */
180 u8 err; /* zero on success */
181 } __packed;
182
183 /* struct used for calling fan read and write methods */
184 struct fan_args {
185 struct agfn_args agfn; /* common fields */
186 u8 fan; /* fan number: 0: set auto mode 1: 1st fan */
187 u32 speed; /* read: RPM/100 - write: 0-255 */
188 } __packed;
189
190 /*
191 * <platform>/ - debugfs root directory
192 * dev_id - current dev_id
193 * ctrl_param - current ctrl_param
194 * method_id - current method_id
195 * devs - call DEVS(dev_id, ctrl_param) and print result
196 * dsts - call DSTS(dev_id) and print result
197 * call - call method_id(dev_id, ctrl_param) and print result
198 */
199 struct asus_wmi_debug {
200 struct dentry *root;
201 u32 method_id;
202 u32 dev_id;
203 u32 ctrl_param;
204 };
205
206 struct asus_rfkill {
207 struct asus_wmi *asus;
208 struct rfkill *rfkill;
209 u32 dev_id;
210 };
211
212 struct asus_wmi {
213 int dsts_id;
214 int spec;
215 int sfun;
216
217 struct input_dev *inputdev;
218 struct backlight_device *backlight_device;
219 struct platform_device *platform_device;
220
221 struct led_classdev wlan_led;
222 int wlan_led_wk;
223 struct led_classdev tpd_led;
224 int tpd_led_wk;
225 struct led_classdev kbd_led;
226 int kbd_led_wk;
227 struct led_classdev lightbar_led;
228 int lightbar_led_wk;
229 struct workqueue_struct *led_workqueue;
230 struct work_struct tpd_led_work;
231 struct work_struct kbd_led_work;
232 struct work_struct wlan_led_work;
233 struct work_struct lightbar_led_work;
234
235 struct asus_rfkill wlan;
236 struct asus_rfkill bluetooth;
237 struct asus_rfkill wimax;
238 struct asus_rfkill wwan3g;
239 struct asus_rfkill gps;
240 struct asus_rfkill uwb;
241
242 bool asus_hwmon_fan_manual_mode;
243 int asus_hwmon_num_fans;
244 int asus_hwmon_pwm;
245
246 struct hotplug_slot *hotplug_slot;
247 struct mutex hotplug_lock;
248 struct mutex wmi_lock;
249 struct workqueue_struct *hotplug_workqueue;
250 struct work_struct hotplug_work;
251
252 struct asus_wmi_debug debug;
253
254 struct asus_wmi_driver *driver;
255 };
256
257 static int asus_wmi_input_init(struct asus_wmi *asus)
258 {
259 int err;
260
261 asus->inputdev = input_allocate_device();
262 if (!asus->inputdev)
263 return -ENOMEM;
264
265 asus->inputdev->name = asus->driver->input_name;
266 asus->inputdev->phys = asus->driver->input_phys;
267 asus->inputdev->id.bustype = BUS_HOST;
268 asus->inputdev->dev.parent = &asus->platform_device->dev;
269 set_bit(EV_REP, asus->inputdev->evbit);
270
271 err = sparse_keymap_setup(asus->inputdev, asus->driver->keymap, NULL);
272 if (err)
273 goto err_free_dev;
274
275 err = input_register_device(asus->inputdev);
276 if (err)
277 goto err_free_dev;
278
279 return 0;
280
281 err_free_dev:
282 input_free_device(asus->inputdev);
283 return err;
284 }
285
286 static void asus_wmi_input_exit(struct asus_wmi *asus)
287 {
288 if (asus->inputdev)
289 input_unregister_device(asus->inputdev);
290
291 asus->inputdev = NULL;
292 }
293
294 static int asus_wmi_evaluate_method(u32 method_id, u32 arg0, u32 arg1,
295 u32 *retval)
296 {
297 struct bios_args args = {
298 .arg0 = arg0,
299 .arg1 = arg1,
300 };
301 struct acpi_buffer input = { (acpi_size) sizeof(args), &args };
302 struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
303 acpi_status status;
304 union acpi_object *obj;
305 u32 tmp = 0;
306
307 status = wmi_evaluate_method(ASUS_WMI_MGMT_GUID, 0, method_id,
308 &input, &output);
309
310 if (ACPI_FAILURE(status))
311 goto exit;
312
313 obj = (union acpi_object *)output.pointer;
314 if (obj && obj->type == ACPI_TYPE_INTEGER)
315 tmp = (u32) obj->integer.value;
316
317 if (retval)
318 *retval = tmp;
319
320 kfree(obj);
321
322 exit:
323 if (ACPI_FAILURE(status))
324 return -EIO;
325
326 if (tmp == ASUS_WMI_UNSUPPORTED_METHOD)
327 return -ENODEV;
328
329 return 0;
330 }
331
332 static int asus_wmi_evaluate_method_agfn(const struct acpi_buffer args)
333 {
334 struct acpi_buffer input;
335 u64 phys_addr;
336 u32 retval;
337 u32 status = -1;
338
339 /*
340 * Copy to dma capable address otherwise memory corruption occurs as
341 * bios has to be able to access it.
342 */
343 input.pointer = kzalloc(args.length, GFP_DMA | GFP_KERNEL);
344 input.length = args.length;
345 if (!input.pointer)
346 return -ENOMEM;
347 phys_addr = virt_to_phys(input.pointer);
348 memcpy(input.pointer, args.pointer, args.length);
349
350 status = asus_wmi_evaluate_method(ASUS_WMI_METHODID_AGFN,
351 phys_addr, 0, &retval);
352 if (!status)
353 memcpy(args.pointer, input.pointer, args.length);
354
355 kfree(input.pointer);
356 if (status)
357 return -ENXIO;
358
359 return retval;
360 }
361
362 static int asus_wmi_get_devstate(struct asus_wmi *asus, u32 dev_id, u32 *retval)
363 {
364 return asus_wmi_evaluate_method(asus->dsts_id, dev_id, 0, retval);
365 }
366
367 static int asus_wmi_set_devstate(u32 dev_id, u32 ctrl_param,
368 u32 *retval)
369 {
370 return asus_wmi_evaluate_method(ASUS_WMI_METHODID_DEVS, dev_id,
371 ctrl_param, retval);
372 }
373
374 /* Helper for special devices with magic return codes */
375 static int asus_wmi_get_devstate_bits(struct asus_wmi *asus,
376 u32 dev_id, u32 mask)
377 {
378 u32 retval = 0;
379 int err;
380
381 err = asus_wmi_get_devstate(asus, dev_id, &retval);
382
383 if (err < 0)
384 return err;
385
386 if (!(retval & ASUS_WMI_DSTS_PRESENCE_BIT))
387 return -ENODEV;
388
389 if (mask == ASUS_WMI_DSTS_STATUS_BIT) {
390 if (retval & ASUS_WMI_DSTS_UNKNOWN_BIT)
391 return -ENODEV;
392 }
393
394 return retval & mask;
395 }
396
397 static int asus_wmi_get_devstate_simple(struct asus_wmi *asus, u32 dev_id)
398 {
399 return asus_wmi_get_devstate_bits(asus, dev_id,
400 ASUS_WMI_DSTS_STATUS_BIT);
401 }
402
403 /*
404 * LEDs
405 */
406 /*
407 * These functions actually update the LED's, and are called from a
408 * workqueue. By doing this as separate work rather than when the LED
409 * subsystem asks, we avoid messing with the Asus ACPI stuff during a
410 * potentially bad time, such as a timer interrupt.
411 */
412 static void tpd_led_update(struct work_struct *work)
413 {
414 int ctrl_param;
415 struct asus_wmi *asus;
416
417 asus = container_of(work, struct asus_wmi, tpd_led_work);
418
419 ctrl_param = asus->tpd_led_wk;
420 asus_wmi_set_devstate(ASUS_WMI_DEVID_TOUCHPAD_LED, ctrl_param, NULL);
421 }
422
423 static void tpd_led_set(struct led_classdev *led_cdev,
424 enum led_brightness value)
425 {
426 struct asus_wmi *asus;
427
428 asus = container_of(led_cdev, struct asus_wmi, tpd_led);
429
430 asus->tpd_led_wk = !!value;
431 queue_work(asus->led_workqueue, &asus->tpd_led_work);
432 }
433
434 static int read_tpd_led_state(struct asus_wmi *asus)
435 {
436 return asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_TOUCHPAD_LED);
437 }
438
439 static enum led_brightness tpd_led_get(struct led_classdev *led_cdev)
440 {
441 struct asus_wmi *asus;
442
443 asus = container_of(led_cdev, struct asus_wmi, tpd_led);
444
445 return read_tpd_led_state(asus);
446 }
447
448 static void kbd_led_update(struct work_struct *work)
449 {
450 int ctrl_param = 0;
451 struct asus_wmi *asus;
452
453 asus = container_of(work, struct asus_wmi, kbd_led_work);
454
455 /*
456 * bits 0-2: level
457 * bit 7: light on/off
458 */
459 if (asus->kbd_led_wk > 0)
460 ctrl_param = 0x80 | (asus->kbd_led_wk & 0x7F);
461
462 asus_wmi_set_devstate(ASUS_WMI_DEVID_KBD_BACKLIGHT, ctrl_param, NULL);
463 }
464
465 static int kbd_led_read(struct asus_wmi *asus, int *level, int *env)
466 {
467 int retval;
468
469 /*
470 * bits 0-2: level
471 * bit 7: light on/off
472 * bit 8-10: environment (0: dark, 1: normal, 2: light)
473 * bit 17: status unknown
474 */
475 retval = asus_wmi_get_devstate_bits(asus, ASUS_WMI_DEVID_KBD_BACKLIGHT,
476 0xFFFF);
477
478 /* Unknown status is considered as off */
479 if (retval == 0x8000)
480 retval = 0;
481
482 if (retval >= 0) {
483 if (level)
484 *level = retval & 0x7F;
485 if (env)
486 *env = (retval >> 8) & 0x7F;
487 retval = 0;
488 }
489
490 return retval;
491 }
492
493 static void kbd_led_set(struct led_classdev *led_cdev,
494 enum led_brightness value)
495 {
496 struct asus_wmi *asus;
497
498 asus = container_of(led_cdev, struct asus_wmi, kbd_led);
499
500 if (value > asus->kbd_led.max_brightness)
501 value = asus->kbd_led.max_brightness;
502 else if (value < 0)
503 value = 0;
504
505 asus->kbd_led_wk = value;
506 queue_work(asus->led_workqueue, &asus->kbd_led_work);
507 }
508
509 static enum led_brightness kbd_led_get(struct led_classdev *led_cdev)
510 {
511 struct asus_wmi *asus;
512 int retval, value;
513
514 asus = container_of(led_cdev, struct asus_wmi, kbd_led);
515
516 retval = kbd_led_read(asus, &value, NULL);
517
518 if (retval < 0)
519 return retval;
520
521 return value;
522 }
523
524 static int wlan_led_unknown_state(struct asus_wmi *asus)
525 {
526 u32 result;
527
528 asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_WIRELESS_LED, &result);
529
530 return result & ASUS_WMI_DSTS_UNKNOWN_BIT;
531 }
532
533 static int wlan_led_presence(struct asus_wmi *asus)
534 {
535 u32 result;
536
537 asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_WIRELESS_LED, &result);
538
539 return result & ASUS_WMI_DSTS_PRESENCE_BIT;
540 }
541
542 static void wlan_led_update(struct work_struct *work)
543 {
544 int ctrl_param;
545 struct asus_wmi *asus;
546
547 asus = container_of(work, struct asus_wmi, wlan_led_work);
548
549 ctrl_param = asus->wlan_led_wk;
550 asus_wmi_set_devstate(ASUS_WMI_DEVID_WIRELESS_LED, ctrl_param, NULL);
551 }
552
553 static void wlan_led_set(struct led_classdev *led_cdev,
554 enum led_brightness value)
555 {
556 struct asus_wmi *asus;
557
558 asus = container_of(led_cdev, struct asus_wmi, wlan_led);
559
560 asus->wlan_led_wk = !!value;
561 queue_work(asus->led_workqueue, &asus->wlan_led_work);
562 }
563
564 static enum led_brightness wlan_led_get(struct led_classdev *led_cdev)
565 {
566 struct asus_wmi *asus;
567 u32 result;
568
569 asus = container_of(led_cdev, struct asus_wmi, wlan_led);
570 asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_WIRELESS_LED, &result);
571
572 return result & ASUS_WMI_DSTS_BRIGHTNESS_MASK;
573 }
574
575 static void lightbar_led_update(struct work_struct *work)
576 {
577 struct asus_wmi *asus;
578 int ctrl_param;
579
580 asus = container_of(work, struct asus_wmi, lightbar_led_work);
581
582 ctrl_param = asus->lightbar_led_wk;
583 asus_wmi_set_devstate(ASUS_WMI_DEVID_LIGHTBAR, ctrl_param, NULL);
584 }
585
586 static void lightbar_led_set(struct led_classdev *led_cdev,
587 enum led_brightness value)
588 {
589 struct asus_wmi *asus;
590
591 asus = container_of(led_cdev, struct asus_wmi, lightbar_led);
592
593 asus->lightbar_led_wk = !!value;
594 queue_work(asus->led_workqueue, &asus->lightbar_led_work);
595 }
596
597 static enum led_brightness lightbar_led_get(struct led_classdev *led_cdev)
598 {
599 struct asus_wmi *asus;
600 u32 result;
601
602 asus = container_of(led_cdev, struct asus_wmi, lightbar_led);
603 asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_LIGHTBAR, &result);
604
605 return result & ASUS_WMI_DSTS_LIGHTBAR_MASK;
606 }
607
608 static int lightbar_led_presence(struct asus_wmi *asus)
609 {
610 u32 result;
611
612 asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_LIGHTBAR, &result);
613
614 return result & ASUS_WMI_DSTS_PRESENCE_BIT;
615 }
616
617 static void asus_wmi_led_exit(struct asus_wmi *asus)
618 {
619 if (!IS_ERR_OR_NULL(asus->kbd_led.dev))
620 led_classdev_unregister(&asus->kbd_led);
621 if (!IS_ERR_OR_NULL(asus->tpd_led.dev))
622 led_classdev_unregister(&asus->tpd_led);
623 if (!IS_ERR_OR_NULL(asus->wlan_led.dev))
624 led_classdev_unregister(&asus->wlan_led);
625 if (!IS_ERR_OR_NULL(asus->lightbar_led.dev))
626 led_classdev_unregister(&asus->lightbar_led);
627 if (asus->led_workqueue)
628 destroy_workqueue(asus->led_workqueue);
629 }
630
631 static int asus_wmi_led_init(struct asus_wmi *asus)
632 {
633 int rv = 0, led_val;
634
635 asus->led_workqueue = create_singlethread_workqueue("led_workqueue");
636 if (!asus->led_workqueue)
637 return -ENOMEM;
638
639 if (read_tpd_led_state(asus) >= 0) {
640 INIT_WORK(&asus->tpd_led_work, tpd_led_update);
641
642 asus->tpd_led.name = "asus::touchpad";
643 asus->tpd_led.brightness_set = tpd_led_set;
644 asus->tpd_led.brightness_get = tpd_led_get;
645 asus->tpd_led.max_brightness = 1;
646
647 rv = led_classdev_register(&asus->platform_device->dev,
648 &asus->tpd_led);
649 if (rv)
650 goto error;
651 }
652
653 led_val = kbd_led_read(asus, NULL, NULL);
654 if (led_val >= 0) {
655 INIT_WORK(&asus->kbd_led_work, kbd_led_update);
656
657 asus->kbd_led_wk = led_val;
658 asus->kbd_led.name = "asus::kbd_backlight";
659 asus->kbd_led.brightness_set = kbd_led_set;
660 asus->kbd_led.brightness_get = kbd_led_get;
661 asus->kbd_led.max_brightness = 3;
662
663 rv = led_classdev_register(&asus->platform_device->dev,
664 &asus->kbd_led);
665 if (rv)
666 goto error;
667 }
668
669 if (wlan_led_presence(asus) && (asus->driver->quirks->wapf > 0)) {
670 INIT_WORK(&asus->wlan_led_work, wlan_led_update);
671
672 asus->wlan_led.name = "asus::wlan";
673 asus->wlan_led.brightness_set = wlan_led_set;
674 if (!wlan_led_unknown_state(asus))
675 asus->wlan_led.brightness_get = wlan_led_get;
676 asus->wlan_led.flags = LED_CORE_SUSPENDRESUME;
677 asus->wlan_led.max_brightness = 1;
678 asus->wlan_led.default_trigger = "asus-wlan";
679
680 rv = led_classdev_register(&asus->platform_device->dev,
681 &asus->wlan_led);
682 if (rv)
683 goto error;
684 }
685
686 if (lightbar_led_presence(asus)) {
687 INIT_WORK(&asus->lightbar_led_work, lightbar_led_update);
688
689 asus->lightbar_led.name = "asus::lightbar";
690 asus->lightbar_led.brightness_set = lightbar_led_set;
691 asus->lightbar_led.brightness_get = lightbar_led_get;
692 asus->lightbar_led.max_brightness = 1;
693
694 rv = led_classdev_register(&asus->platform_device->dev,
695 &asus->lightbar_led);
696 }
697
698 error:
699 if (rv)
700 asus_wmi_led_exit(asus);
701
702 return rv;
703 }
704
705
706 /*
707 * PCI hotplug (for wlan rfkill)
708 */
709 static bool asus_wlan_rfkill_blocked(struct asus_wmi *asus)
710 {
711 int result = asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WLAN);
712
713 if (result < 0)
714 return false;
715 return !result;
716 }
717
718 static void asus_rfkill_hotplug(struct asus_wmi *asus)
719 {
720 struct pci_dev *dev;
721 struct pci_bus *bus;
722 bool blocked;
723 bool absent;
724 u32 l;
725
726 mutex_lock(&asus->wmi_lock);
727 blocked = asus_wlan_rfkill_blocked(asus);
728 mutex_unlock(&asus->wmi_lock);
729
730 mutex_lock(&asus->hotplug_lock);
731 pci_lock_rescan_remove();
732
733 if (asus->wlan.rfkill)
734 rfkill_set_sw_state(asus->wlan.rfkill, blocked);
735
736 if (asus->hotplug_slot) {
737 bus = pci_find_bus(0, 1);
738 if (!bus) {
739 pr_warn("Unable to find PCI bus 1?\n");
740 goto out_unlock;
741 }
742
743 if (pci_bus_read_config_dword(bus, 0, PCI_VENDOR_ID, &l)) {
744 pr_err("Unable to read PCI config space?\n");
745 goto out_unlock;
746 }
747 absent = (l == 0xffffffff);
748
749 if (blocked != absent) {
750 pr_warn("BIOS says wireless lan is %s, "
751 "but the pci device is %s\n",
752 blocked ? "blocked" : "unblocked",
753 absent ? "absent" : "present");
754 pr_warn("skipped wireless hotplug as probably "
755 "inappropriate for this model\n");
756 goto out_unlock;
757 }
758
759 if (!blocked) {
760 dev = pci_get_slot(bus, 0);
761 if (dev) {
762 /* Device already present */
763 pci_dev_put(dev);
764 goto out_unlock;
765 }
766 dev = pci_scan_single_device(bus, 0);
767 if (dev) {
768 pci_bus_assign_resources(bus);
769 pci_bus_add_device(dev);
770 }
771 } else {
772 dev = pci_get_slot(bus, 0);
773 if (dev) {
774 pci_stop_and_remove_bus_device(dev);
775 pci_dev_put(dev);
776 }
777 }
778 }
779
780 out_unlock:
781 pci_unlock_rescan_remove();
782 mutex_unlock(&asus->hotplug_lock);
783 }
784
785 static void asus_rfkill_notify(acpi_handle handle, u32 event, void *data)
786 {
787 struct asus_wmi *asus = data;
788
789 if (event != ACPI_NOTIFY_BUS_CHECK)
790 return;
791
792 /*
793 * We can't call directly asus_rfkill_hotplug because most
794 * of the time WMBC is still being executed and not reetrant.
795 * There is currently no way to tell ACPICA that we want this
796 * method to be serialized, we schedule a asus_rfkill_hotplug
797 * call later, in a safer context.
798 */
799 queue_work(asus->hotplug_workqueue, &asus->hotplug_work);
800 }
801
802 static int asus_register_rfkill_notifier(struct asus_wmi *asus, char *node)
803 {
804 acpi_status status;
805 acpi_handle handle;
806
807 status = acpi_get_handle(NULL, node, &handle);
808
809 if (ACPI_SUCCESS(status)) {
810 status = acpi_install_notify_handler(handle,
811 ACPI_SYSTEM_NOTIFY,
812 asus_rfkill_notify, asus);
813 if (ACPI_FAILURE(status))
814 pr_warn("Failed to register notify on %s\n", node);
815 } else
816 return -ENODEV;
817
818 return 0;
819 }
820
821 static void asus_unregister_rfkill_notifier(struct asus_wmi *asus, char *node)
822 {
823 acpi_status status = AE_OK;
824 acpi_handle handle;
825
826 status = acpi_get_handle(NULL, node, &handle);
827
828 if (ACPI_SUCCESS(status)) {
829 status = acpi_remove_notify_handler(handle,
830 ACPI_SYSTEM_NOTIFY,
831 asus_rfkill_notify);
832 if (ACPI_FAILURE(status))
833 pr_err("Error removing rfkill notify handler %s\n",
834 node);
835 }
836 }
837
838 static int asus_get_adapter_status(struct hotplug_slot *hotplug_slot,
839 u8 *value)
840 {
841 struct asus_wmi *asus = hotplug_slot->private;
842 int result = asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WLAN);
843
844 if (result < 0)
845 return result;
846
847 *value = !!result;
848 return 0;
849 }
850
851 static void asus_cleanup_pci_hotplug(struct hotplug_slot *hotplug_slot)
852 {
853 kfree(hotplug_slot->info);
854 kfree(hotplug_slot);
855 }
856
857 static struct hotplug_slot_ops asus_hotplug_slot_ops = {
858 .owner = THIS_MODULE,
859 .get_adapter_status = asus_get_adapter_status,
860 .get_power_status = asus_get_adapter_status,
861 };
862
863 static void asus_hotplug_work(struct work_struct *work)
864 {
865 struct asus_wmi *asus;
866
867 asus = container_of(work, struct asus_wmi, hotplug_work);
868 asus_rfkill_hotplug(asus);
869 }
870
871 static int asus_setup_pci_hotplug(struct asus_wmi *asus)
872 {
873 int ret = -ENOMEM;
874 struct pci_bus *bus = pci_find_bus(0, 1);
875
876 if (!bus) {
877 pr_err("Unable to find wifi PCI bus\n");
878 return -ENODEV;
879 }
880
881 asus->hotplug_workqueue =
882 create_singlethread_workqueue("hotplug_workqueue");
883 if (!asus->hotplug_workqueue)
884 goto error_workqueue;
885
886 INIT_WORK(&asus->hotplug_work, asus_hotplug_work);
887
888 asus->hotplug_slot = kzalloc(sizeof(struct hotplug_slot), GFP_KERNEL);
889 if (!asus->hotplug_slot)
890 goto error_slot;
891
892 asus->hotplug_slot->info = kzalloc(sizeof(struct hotplug_slot_info),
893 GFP_KERNEL);
894 if (!asus->hotplug_slot->info)
895 goto error_info;
896
897 asus->hotplug_slot->private = asus;
898 asus->hotplug_slot->release = &asus_cleanup_pci_hotplug;
899 asus->hotplug_slot->ops = &asus_hotplug_slot_ops;
900 asus_get_adapter_status(asus->hotplug_slot,
901 &asus->hotplug_slot->info->adapter_status);
902
903 ret = pci_hp_register(asus->hotplug_slot, bus, 0, "asus-wifi");
904 if (ret) {
905 pr_err("Unable to register hotplug slot - %d\n", ret);
906 goto error_register;
907 }
908
909 return 0;
910
911 error_register:
912 kfree(asus->hotplug_slot->info);
913 error_info:
914 kfree(asus->hotplug_slot);
915 asus->hotplug_slot = NULL;
916 error_slot:
917 destroy_workqueue(asus->hotplug_workqueue);
918 error_workqueue:
919 return ret;
920 }
921
922 /*
923 * Rfkill devices
924 */
925 static int asus_rfkill_set(void *data, bool blocked)
926 {
927 struct asus_rfkill *priv = data;
928 u32 ctrl_param = !blocked;
929 u32 dev_id = priv->dev_id;
930
931 /*
932 * If the user bit is set, BIOS can't set and record the wlan status,
933 * it will report the value read from id ASUS_WMI_DEVID_WLAN_LED
934 * while we query the wlan status through WMI(ASUS_WMI_DEVID_WLAN).
935 * So, we have to record wlan status in id ASUS_WMI_DEVID_WLAN_LED
936 * while setting the wlan status through WMI.
937 * This is also the behavior that windows app will do.
938 */
939 if ((dev_id == ASUS_WMI_DEVID_WLAN) &&
940 priv->asus->driver->wlan_ctrl_by_user)
941 dev_id = ASUS_WMI_DEVID_WLAN_LED;
942
943 return asus_wmi_set_devstate(dev_id, ctrl_param, NULL);
944 }
945
946 static void asus_rfkill_query(struct rfkill *rfkill, void *data)
947 {
948 struct asus_rfkill *priv = data;
949 int result;
950
951 result = asus_wmi_get_devstate_simple(priv->asus, priv->dev_id);
952
953 if (result < 0)
954 return;
955
956 rfkill_set_sw_state(priv->rfkill, !result);
957 }
958
959 static int asus_rfkill_wlan_set(void *data, bool blocked)
960 {
961 struct asus_rfkill *priv = data;
962 struct asus_wmi *asus = priv->asus;
963 int ret;
964
965 /*
966 * This handler is enabled only if hotplug is enabled.
967 * In this case, the asus_wmi_set_devstate() will
968 * trigger a wmi notification and we need to wait
969 * this call to finish before being able to call
970 * any wmi method
971 */
972 mutex_lock(&asus->wmi_lock);
973 ret = asus_rfkill_set(data, blocked);
974 mutex_unlock(&asus->wmi_lock);
975 return ret;
976 }
977
978 static const struct rfkill_ops asus_rfkill_wlan_ops = {
979 .set_block = asus_rfkill_wlan_set,
980 .query = asus_rfkill_query,
981 };
982
983 static const struct rfkill_ops asus_rfkill_ops = {
984 .set_block = asus_rfkill_set,
985 .query = asus_rfkill_query,
986 };
987
988 static int asus_new_rfkill(struct asus_wmi *asus,
989 struct asus_rfkill *arfkill,
990 const char *name, enum rfkill_type type, int dev_id)
991 {
992 int result = asus_wmi_get_devstate_simple(asus, dev_id);
993 struct rfkill **rfkill = &arfkill->rfkill;
994
995 if (result < 0)
996 return result;
997
998 arfkill->dev_id = dev_id;
999 arfkill->asus = asus;
1000
1001 if (dev_id == ASUS_WMI_DEVID_WLAN &&
1002 asus->driver->quirks->hotplug_wireless)
1003 *rfkill = rfkill_alloc(name, &asus->platform_device->dev, type,
1004 &asus_rfkill_wlan_ops, arfkill);
1005 else
1006 *rfkill = rfkill_alloc(name, &asus->platform_device->dev, type,
1007 &asus_rfkill_ops, arfkill);
1008
1009 if (!*rfkill)
1010 return -EINVAL;
1011
1012 if ((dev_id == ASUS_WMI_DEVID_WLAN) &&
1013 (asus->driver->quirks->wapf > 0))
1014 rfkill_set_led_trigger_name(*rfkill, "asus-wlan");
1015
1016 rfkill_init_sw_state(*rfkill, !result);
1017 result = rfkill_register(*rfkill);
1018 if (result) {
1019 rfkill_destroy(*rfkill);
1020 *rfkill = NULL;
1021 return result;
1022 }
1023 return 0;
1024 }
1025
1026 static void asus_wmi_rfkill_exit(struct asus_wmi *asus)
1027 {
1028 asus_unregister_rfkill_notifier(asus, "\\_SB.PCI0.P0P5");
1029 asus_unregister_rfkill_notifier(asus, "\\_SB.PCI0.P0P6");
1030 asus_unregister_rfkill_notifier(asus, "\\_SB.PCI0.P0P7");
1031 if (asus->wlan.rfkill) {
1032 rfkill_unregister(asus->wlan.rfkill);
1033 rfkill_destroy(asus->wlan.rfkill);
1034 asus->wlan.rfkill = NULL;
1035 }
1036 /*
1037 * Refresh pci hotplug in case the rfkill state was changed after
1038 * asus_unregister_rfkill_notifier()
1039 */
1040 asus_rfkill_hotplug(asus);
1041 if (asus->hotplug_slot)
1042 pci_hp_deregister(asus->hotplug_slot);
1043 if (asus->hotplug_workqueue)
1044 destroy_workqueue(asus->hotplug_workqueue);
1045
1046 if (asus->bluetooth.rfkill) {
1047 rfkill_unregister(asus->bluetooth.rfkill);
1048 rfkill_destroy(asus->bluetooth.rfkill);
1049 asus->bluetooth.rfkill = NULL;
1050 }
1051 if (asus->wimax.rfkill) {
1052 rfkill_unregister(asus->wimax.rfkill);
1053 rfkill_destroy(asus->wimax.rfkill);
1054 asus->wimax.rfkill = NULL;
1055 }
1056 if (asus->wwan3g.rfkill) {
1057 rfkill_unregister(asus->wwan3g.rfkill);
1058 rfkill_destroy(asus->wwan3g.rfkill);
1059 asus->wwan3g.rfkill = NULL;
1060 }
1061 if (asus->gps.rfkill) {
1062 rfkill_unregister(asus->gps.rfkill);
1063 rfkill_destroy(asus->gps.rfkill);
1064 asus->gps.rfkill = NULL;
1065 }
1066 if (asus->uwb.rfkill) {
1067 rfkill_unregister(asus->uwb.rfkill);
1068 rfkill_destroy(asus->uwb.rfkill);
1069 asus->uwb.rfkill = NULL;
1070 }
1071 }
1072
1073 static int asus_wmi_rfkill_init(struct asus_wmi *asus)
1074 {
1075 int result = 0;
1076
1077 mutex_init(&asus->hotplug_lock);
1078 mutex_init(&asus->wmi_lock);
1079
1080 result = asus_new_rfkill(asus, &asus->wlan, "asus-wlan",
1081 RFKILL_TYPE_WLAN, ASUS_WMI_DEVID_WLAN);
1082
1083 if (result && result != -ENODEV)
1084 goto exit;
1085
1086 result = asus_new_rfkill(asus, &asus->bluetooth,
1087 "asus-bluetooth", RFKILL_TYPE_BLUETOOTH,
1088 ASUS_WMI_DEVID_BLUETOOTH);
1089
1090 if (result && result != -ENODEV)
1091 goto exit;
1092
1093 result = asus_new_rfkill(asus, &asus->wimax, "asus-wimax",
1094 RFKILL_TYPE_WIMAX, ASUS_WMI_DEVID_WIMAX);
1095
1096 if (result && result != -ENODEV)
1097 goto exit;
1098
1099 result = asus_new_rfkill(asus, &asus->wwan3g, "asus-wwan3g",
1100 RFKILL_TYPE_WWAN, ASUS_WMI_DEVID_WWAN3G);
1101
1102 if (result && result != -ENODEV)
1103 goto exit;
1104
1105 result = asus_new_rfkill(asus, &asus->gps, "asus-gps",
1106 RFKILL_TYPE_GPS, ASUS_WMI_DEVID_GPS);
1107
1108 if (result && result != -ENODEV)
1109 goto exit;
1110
1111 result = asus_new_rfkill(asus, &asus->uwb, "asus-uwb",
1112 RFKILL_TYPE_UWB, ASUS_WMI_DEVID_UWB);
1113
1114 if (result && result != -ENODEV)
1115 goto exit;
1116
1117 if (!asus->driver->quirks->hotplug_wireless)
1118 goto exit;
1119
1120 result = asus_setup_pci_hotplug(asus);
1121 /*
1122 * If we get -EBUSY then something else is handling the PCI hotplug -
1123 * don't fail in this case
1124 */
1125 if (result == -EBUSY)
1126 result = 0;
1127
1128 asus_register_rfkill_notifier(asus, "\\_SB.PCI0.P0P5");
1129 asus_register_rfkill_notifier(asus, "\\_SB.PCI0.P0P6");
1130 asus_register_rfkill_notifier(asus, "\\_SB.PCI0.P0P7");
1131 /*
1132 * Refresh pci hotplug in case the rfkill state was changed during
1133 * setup.
1134 */
1135 asus_rfkill_hotplug(asus);
1136
1137 exit:
1138 if (result && result != -ENODEV)
1139 asus_wmi_rfkill_exit(asus);
1140
1141 if (result == -ENODEV)
1142 result = 0;
1143
1144 return result;
1145 }
1146
1147 static void asus_wmi_set_xusb2pr(struct asus_wmi *asus)
1148 {
1149 struct pci_dev *xhci_pdev;
1150 u32 orig_ports_available;
1151 u32 ports_available = asus->driver->quirks->xusb2pr;
1152
1153 xhci_pdev = pci_get_device(PCI_VENDOR_ID_INTEL,
1154 PCI_DEVICE_ID_INTEL_LYNXPOINT_LP_XHCI,
1155 NULL);
1156
1157 if (!xhci_pdev)
1158 return;
1159
1160 pci_read_config_dword(xhci_pdev, USB_INTEL_XUSB2PR,
1161 &orig_ports_available);
1162
1163 pci_write_config_dword(xhci_pdev, USB_INTEL_XUSB2PR,
1164 cpu_to_le32(ports_available));
1165
1166 pr_info("set USB_INTEL_XUSB2PR old: 0x%04x, new: 0x%04x\n",
1167 orig_ports_available, ports_available);
1168 }
1169
1170 /*
1171 * Some devices dont support or have borcken get_als method
1172 * but still support set method.
1173 */
1174 static void asus_wmi_set_als(void)
1175 {
1176 asus_wmi_set_devstate(ASUS_WMI_DEVID_ALS_ENABLE, 1, NULL);
1177 }
1178
1179 /*
1180 * Hwmon device
1181 */
1182 static int asus_hwmon_agfn_fan_speed_read(struct asus_wmi *asus, int fan,
1183 int *speed)
1184 {
1185 struct fan_args args = {
1186 .agfn.len = sizeof(args),
1187 .agfn.mfun = ASUS_FAN_MFUN,
1188 .agfn.sfun = ASUS_FAN_SFUN_READ,
1189 .fan = fan,
1190 .speed = 0,
1191 };
1192 struct acpi_buffer input = { (acpi_size) sizeof(args), &args };
1193 int status;
1194
1195 if (fan != 1)
1196 return -EINVAL;
1197
1198 status = asus_wmi_evaluate_method_agfn(input);
1199
1200 if (status || args.agfn.err)
1201 return -ENXIO;
1202
1203 if (speed)
1204 *speed = args.speed;
1205
1206 return 0;
1207 }
1208
1209 static int asus_hwmon_agfn_fan_speed_write(struct asus_wmi *asus, int fan,
1210 int *speed)
1211 {
1212 struct fan_args args = {
1213 .agfn.len = sizeof(args),
1214 .agfn.mfun = ASUS_FAN_MFUN,
1215 .agfn.sfun = ASUS_FAN_SFUN_WRITE,
1216 .fan = fan,
1217 .speed = speed ? *speed : 0,
1218 };
1219 struct acpi_buffer input = { (acpi_size) sizeof(args), &args };
1220 int status;
1221
1222 /* 1: for setting 1st fan's speed 0: setting auto mode */
1223 if (fan != 1 && fan != 0)
1224 return -EINVAL;
1225
1226 status = asus_wmi_evaluate_method_agfn(input);
1227
1228 if (status || args.agfn.err)
1229 return -ENXIO;
1230
1231 if (speed && fan == 1)
1232 asus->asus_hwmon_pwm = *speed;
1233
1234 return 0;
1235 }
1236
1237 /*
1238 * Check if we can read the speed of one fan. If true we assume we can also
1239 * control it.
1240 */
1241 static int asus_hwmon_get_fan_number(struct asus_wmi *asus, int *num_fans)
1242 {
1243 int status;
1244 int speed = 0;
1245
1246 *num_fans = 0;
1247
1248 status = asus_hwmon_agfn_fan_speed_read(asus, 1, &speed);
1249 if (!status)
1250 *num_fans = 1;
1251
1252 return 0;
1253 }
1254
1255 static int asus_hwmon_fan_set_auto(struct asus_wmi *asus)
1256 {
1257 int status;
1258
1259 status = asus_hwmon_agfn_fan_speed_write(asus, 0, NULL);
1260 if (status)
1261 return -ENXIO;
1262
1263 asus->asus_hwmon_fan_manual_mode = false;
1264
1265 return 0;
1266 }
1267
1268 static int asus_hwmon_fan_rpm_show(struct device *dev, int fan)
1269 {
1270 struct asus_wmi *asus = dev_get_drvdata(dev);
1271 int value;
1272 int ret;
1273
1274 /* no speed readable on manual mode */
1275 if (asus->asus_hwmon_fan_manual_mode)
1276 return -ENXIO;
1277
1278 ret = asus_hwmon_agfn_fan_speed_read(asus, fan+1, &value);
1279 if (ret) {
1280 pr_warn("reading fan speed failed: %d\n", ret);
1281 return -ENXIO;
1282 }
1283
1284 return value;
1285 }
1286
1287 static void asus_hwmon_pwm_show(struct asus_wmi *asus, int fan, int *value)
1288 {
1289 int err;
1290
1291 if (asus->asus_hwmon_pwm >= 0) {
1292 *value = asus->asus_hwmon_pwm;
1293 return;
1294 }
1295
1296 err = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_FAN_CTRL, value);
1297 if (err < 0)
1298 return;
1299
1300 *value &= 0xFF;
1301
1302 if (*value == 1) /* Low Speed */
1303 *value = 85;
1304 else if (*value == 2)
1305 *value = 170;
1306 else if (*value == 3)
1307 *value = 255;
1308 else if (*value) {
1309 pr_err("Unknown fan speed %#x\n", *value);
1310 *value = -1;
1311 }
1312 }
1313
1314 static ssize_t pwm1_show(struct device *dev,
1315 struct device_attribute *attr,
1316 char *buf)
1317 {
1318 struct asus_wmi *asus = dev_get_drvdata(dev);
1319 int value;
1320
1321 asus_hwmon_pwm_show(asus, 0, &value);
1322
1323 return sprintf(buf, "%d\n", value);
1324 }
1325
1326 static ssize_t pwm1_store(struct device *dev,
1327 struct device_attribute *attr,
1328 const char *buf, size_t count) {
1329 struct asus_wmi *asus = dev_get_drvdata(dev);
1330 int value;
1331 int state;
1332 int ret;
1333
1334 ret = kstrtouint(buf, 10, &value);
1335
1336 if (ret)
1337 return ret;
1338
1339 value = clamp(value, 0, 255);
1340
1341 state = asus_hwmon_agfn_fan_speed_write(asus, 1, &value);
1342 if (state)
1343 pr_warn("Setting fan speed failed: %d\n", state);
1344 else
1345 asus->asus_hwmon_fan_manual_mode = true;
1346
1347 return count;
1348 }
1349
1350 static ssize_t fan1_input_show(struct device *dev,
1351 struct device_attribute *attr,
1352 char *buf)
1353 {
1354 int value = asus_hwmon_fan_rpm_show(dev, 0);
1355
1356 return sprintf(buf, "%d\n", value < 0 ? -1 : value*100);
1357
1358 }
1359
1360 static ssize_t pwm1_enable_show(struct device *dev,
1361 struct device_attribute *attr,
1362 char *buf)
1363 {
1364 struct asus_wmi *asus = dev_get_drvdata(dev);
1365
1366 if (asus->asus_hwmon_fan_manual_mode)
1367 return sprintf(buf, "%d\n", ASUS_FAN_CTRL_MANUAL);
1368
1369 return sprintf(buf, "%d\n", ASUS_FAN_CTRL_AUTO);
1370 }
1371
1372 static ssize_t pwm1_enable_store(struct device *dev,
1373 struct device_attribute *attr,
1374 const char *buf, size_t count)
1375 {
1376 struct asus_wmi *asus = dev_get_drvdata(dev);
1377 int status = 0;
1378 int state;
1379 int ret;
1380
1381 ret = kstrtouint(buf, 10, &state);
1382
1383 if (ret)
1384 return ret;
1385
1386 if (state == ASUS_FAN_CTRL_MANUAL)
1387 asus->asus_hwmon_fan_manual_mode = true;
1388 else
1389 status = asus_hwmon_fan_set_auto(asus);
1390
1391 if (status)
1392 return status;
1393
1394 return count;
1395 }
1396
1397 static ssize_t fan1_label_show(struct device *dev,
1398 struct device_attribute *attr,
1399 char *buf)
1400 {
1401 return sprintf(buf, "%s\n", ASUS_FAN_DESC);
1402 }
1403
1404 static ssize_t asus_hwmon_temp1(struct device *dev,
1405 struct device_attribute *attr,
1406 char *buf)
1407 {
1408 struct asus_wmi *asus = dev_get_drvdata(dev);
1409 u32 value;
1410 int err;
1411
1412 err = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_THERMAL_CTRL, &value);
1413
1414 if (err < 0)
1415 return err;
1416
1417 value = DECI_KELVIN_TO_CELSIUS((value & 0xFFFF)) * 1000;
1418
1419 return sprintf(buf, "%d\n", value);
1420 }
1421
1422 /* Fan1 */
1423 static DEVICE_ATTR_RW(pwm1);
1424 static DEVICE_ATTR_RW(pwm1_enable);
1425 static DEVICE_ATTR_RO(fan1_input);
1426 static DEVICE_ATTR_RO(fan1_label);
1427
1428 /* Temperature */
1429 static DEVICE_ATTR(temp1_input, S_IRUGO, asus_hwmon_temp1, NULL);
1430
1431 static struct attribute *hwmon_attributes[] = {
1432 &dev_attr_pwm1.attr,
1433 &dev_attr_pwm1_enable.attr,
1434 &dev_attr_fan1_input.attr,
1435 &dev_attr_fan1_label.attr,
1436
1437 &dev_attr_temp1_input.attr,
1438 NULL
1439 };
1440
1441 static umode_t asus_hwmon_sysfs_is_visible(struct kobject *kobj,
1442 struct attribute *attr, int idx)
1443 {
1444 struct device *dev = container_of(kobj, struct device, kobj);
1445 struct platform_device *pdev = to_platform_device(dev->parent);
1446 struct asus_wmi *asus = platform_get_drvdata(pdev);
1447 int dev_id = -1;
1448 int fan_attr = -1;
1449 u32 value = ASUS_WMI_UNSUPPORTED_METHOD;
1450 bool ok = true;
1451
1452 if (attr == &dev_attr_pwm1.attr)
1453 dev_id = ASUS_WMI_DEVID_FAN_CTRL;
1454 else if (attr == &dev_attr_temp1_input.attr)
1455 dev_id = ASUS_WMI_DEVID_THERMAL_CTRL;
1456
1457
1458 if (attr == &dev_attr_fan1_input.attr
1459 || attr == &dev_attr_fan1_label.attr
1460 || attr == &dev_attr_pwm1.attr
1461 || attr == &dev_attr_pwm1_enable.attr) {
1462 fan_attr = 1;
1463 }
1464
1465 if (dev_id != -1) {
1466 int err = asus_wmi_get_devstate(asus, dev_id, &value);
1467
1468 if (err < 0 && fan_attr == -1)
1469 return 0; /* can't return negative here */
1470 }
1471
1472 if (dev_id == ASUS_WMI_DEVID_FAN_CTRL) {
1473 /*
1474 * We need to find a better way, probably using sfun,
1475 * bits or spec ...
1476 * Currently we disable it if:
1477 * - ASUS_WMI_UNSUPPORTED_METHOD is returned
1478 * - reverved bits are non-zero
1479 * - sfun and presence bit are not set
1480 */
1481 if (value == ASUS_WMI_UNSUPPORTED_METHOD || value & 0xFFF80000
1482 || (!asus->sfun && !(value & ASUS_WMI_DSTS_PRESENCE_BIT)))
1483 ok = false;
1484 else
1485 ok = fan_attr <= asus->asus_hwmon_num_fans;
1486 } else if (dev_id == ASUS_WMI_DEVID_THERMAL_CTRL) {
1487 /* If value is zero, something is clearly wrong */
1488 if (!value)
1489 ok = false;
1490 } else if (fan_attr <= asus->asus_hwmon_num_fans && fan_attr != -1) {
1491 ok = true;
1492 } else {
1493 ok = false;
1494 }
1495
1496 return ok ? attr->mode : 0;
1497 }
1498
1499 static const struct attribute_group hwmon_attribute_group = {
1500 .is_visible = asus_hwmon_sysfs_is_visible,
1501 .attrs = hwmon_attributes
1502 };
1503 __ATTRIBUTE_GROUPS(hwmon_attribute);
1504
1505 static int asus_wmi_hwmon_init(struct asus_wmi *asus)
1506 {
1507 struct device *hwmon;
1508
1509 hwmon = hwmon_device_register_with_groups(&asus->platform_device->dev,
1510 "asus", asus,
1511 hwmon_attribute_groups);
1512 if (IS_ERR(hwmon)) {
1513 pr_err("Could not register asus hwmon device\n");
1514 return PTR_ERR(hwmon);
1515 }
1516 return 0;
1517 }
1518
1519 /*
1520 * Backlight
1521 */
1522 static int read_backlight_power(struct asus_wmi *asus)
1523 {
1524 int ret;
1525 if (asus->driver->quirks->store_backlight_power)
1526 ret = !asus->driver->panel_power;
1527 else
1528 ret = asus_wmi_get_devstate_simple(asus,
1529 ASUS_WMI_DEVID_BACKLIGHT);
1530
1531 if (ret < 0)
1532 return ret;
1533
1534 return ret ? FB_BLANK_UNBLANK : FB_BLANK_POWERDOWN;
1535 }
1536
1537 static int read_brightness_max(struct asus_wmi *asus)
1538 {
1539 u32 retval;
1540 int err;
1541
1542 err = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_BRIGHTNESS, &retval);
1543
1544 if (err < 0)
1545 return err;
1546
1547 retval = retval & ASUS_WMI_DSTS_MAX_BRIGTH_MASK;
1548 retval >>= 8;
1549
1550 if (!retval)
1551 return -ENODEV;
1552
1553 return retval;
1554 }
1555
1556 static int read_brightness(struct backlight_device *bd)
1557 {
1558 struct asus_wmi *asus = bl_get_data(bd);
1559 u32 retval;
1560 int err;
1561
1562 err = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_BRIGHTNESS, &retval);
1563
1564 if (err < 0)
1565 return err;
1566
1567 return retval & ASUS_WMI_DSTS_BRIGHTNESS_MASK;
1568 }
1569
1570 static u32 get_scalar_command(struct backlight_device *bd)
1571 {
1572 struct asus_wmi *asus = bl_get_data(bd);
1573 u32 ctrl_param = 0;
1574
1575 if ((asus->driver->brightness < bd->props.brightness) ||
1576 bd->props.brightness == bd->props.max_brightness)
1577 ctrl_param = 0x00008001;
1578 else if ((asus->driver->brightness > bd->props.brightness) ||
1579 bd->props.brightness == 0)
1580 ctrl_param = 0x00008000;
1581
1582 asus->driver->brightness = bd->props.brightness;
1583
1584 return ctrl_param;
1585 }
1586
1587 static int update_bl_status(struct backlight_device *bd)
1588 {
1589 struct asus_wmi *asus = bl_get_data(bd);
1590 u32 ctrl_param;
1591 int power, err = 0;
1592
1593 power = read_backlight_power(asus);
1594 if (power != -ENODEV && bd->props.power != power) {
1595 ctrl_param = !!(bd->props.power == FB_BLANK_UNBLANK);
1596 err = asus_wmi_set_devstate(ASUS_WMI_DEVID_BACKLIGHT,
1597 ctrl_param, NULL);
1598 if (asus->driver->quirks->store_backlight_power)
1599 asus->driver->panel_power = bd->props.power;
1600
1601 /* When using scalar brightness, updating the brightness
1602 * will mess with the backlight power */
1603 if (asus->driver->quirks->scalar_panel_brightness)
1604 return err;
1605 }
1606
1607 if (asus->driver->quirks->scalar_panel_brightness)
1608 ctrl_param = get_scalar_command(bd);
1609 else
1610 ctrl_param = bd->props.brightness;
1611
1612 err = asus_wmi_set_devstate(ASUS_WMI_DEVID_BRIGHTNESS,
1613 ctrl_param, NULL);
1614
1615 return err;
1616 }
1617
1618 static const struct backlight_ops asus_wmi_bl_ops = {
1619 .get_brightness = read_brightness,
1620 .update_status = update_bl_status,
1621 };
1622
1623 static int asus_wmi_backlight_notify(struct asus_wmi *asus, int code)
1624 {
1625 struct backlight_device *bd = asus->backlight_device;
1626 int old = bd->props.brightness;
1627 int new = old;
1628
1629 if (code >= NOTIFY_BRNUP_MIN && code <= NOTIFY_BRNUP_MAX)
1630 new = code - NOTIFY_BRNUP_MIN + 1;
1631 else if (code >= NOTIFY_BRNDOWN_MIN && code <= NOTIFY_BRNDOWN_MAX)
1632 new = code - NOTIFY_BRNDOWN_MIN;
1633
1634 bd->props.brightness = new;
1635 backlight_update_status(bd);
1636 backlight_force_update(bd, BACKLIGHT_UPDATE_HOTKEY);
1637
1638 return old;
1639 }
1640
1641 static int asus_wmi_backlight_init(struct asus_wmi *asus)
1642 {
1643 struct backlight_device *bd;
1644 struct backlight_properties props;
1645 int max;
1646 int power;
1647
1648 max = read_brightness_max(asus);
1649 if (max < 0)
1650 return max;
1651
1652 power = read_backlight_power(asus);
1653
1654 if (power == -ENODEV)
1655 power = FB_BLANK_UNBLANK;
1656 else if (power < 0)
1657 return power;
1658
1659 memset(&props, 0, sizeof(struct backlight_properties));
1660 props.type = BACKLIGHT_PLATFORM;
1661 props.max_brightness = max;
1662 bd = backlight_device_register(asus->driver->name,
1663 &asus->platform_device->dev, asus,
1664 &asus_wmi_bl_ops, &props);
1665 if (IS_ERR(bd)) {
1666 pr_err("Could not register backlight device\n");
1667 return PTR_ERR(bd);
1668 }
1669
1670 asus->backlight_device = bd;
1671
1672 if (asus->driver->quirks->store_backlight_power)
1673 asus->driver->panel_power = power;
1674
1675 bd->props.brightness = read_brightness(bd);
1676 bd->props.power = power;
1677 backlight_update_status(bd);
1678
1679 asus->driver->brightness = bd->props.brightness;
1680
1681 return 0;
1682 }
1683
1684 static void asus_wmi_backlight_exit(struct asus_wmi *asus)
1685 {
1686 backlight_device_unregister(asus->backlight_device);
1687
1688 asus->backlight_device = NULL;
1689 }
1690
1691 static int is_display_toggle(int code)
1692 {
1693 /* display toggle keys */
1694 if ((code >= 0x61 && code <= 0x67) ||
1695 (code >= 0x8c && code <= 0x93) ||
1696 (code >= 0xa0 && code <= 0xa7) ||
1697 (code >= 0xd0 && code <= 0xd5))
1698 return 1;
1699
1700 return 0;
1701 }
1702
1703 static void asus_wmi_notify(u32 value, void *context)
1704 {
1705 struct asus_wmi *asus = context;
1706 struct acpi_buffer response = { ACPI_ALLOCATE_BUFFER, NULL };
1707 union acpi_object *obj;
1708 acpi_status status;
1709 int code;
1710 int orig_code;
1711 unsigned int key_value = 1;
1712 bool autorelease = 1;
1713
1714 status = wmi_get_event_data(value, &response);
1715 if (status != AE_OK) {
1716 pr_err("bad event status 0x%x\n", status);
1717 return;
1718 }
1719
1720 obj = (union acpi_object *)response.pointer;
1721
1722 if (!obj || obj->type != ACPI_TYPE_INTEGER)
1723 goto exit;
1724
1725 code = obj->integer.value;
1726 orig_code = code;
1727
1728 if (asus->driver->key_filter) {
1729 asus->driver->key_filter(asus->driver, &code, &key_value,
1730 &autorelease);
1731 if (code == ASUS_WMI_KEY_IGNORE)
1732 goto exit;
1733 }
1734
1735 if (code >= NOTIFY_BRNUP_MIN && code <= NOTIFY_BRNUP_MAX)
1736 code = ASUS_WMI_BRN_UP;
1737 else if (code >= NOTIFY_BRNDOWN_MIN &&
1738 code <= NOTIFY_BRNDOWN_MAX)
1739 code = ASUS_WMI_BRN_DOWN;
1740
1741 if (code == ASUS_WMI_BRN_DOWN || code == ASUS_WMI_BRN_UP) {
1742 if (acpi_video_get_backlight_type() == acpi_backlight_vendor) {
1743 asus_wmi_backlight_notify(asus, orig_code);
1744 goto exit;
1745 }
1746 }
1747
1748 if (is_display_toggle(code) &&
1749 asus->driver->quirks->no_display_toggle)
1750 goto exit;
1751
1752 if (!sparse_keymap_report_event(asus->inputdev, code,
1753 key_value, autorelease))
1754 pr_info("Unknown key %x pressed\n", code);
1755
1756 exit:
1757 kfree(obj);
1758 }
1759
1760 /*
1761 * Sys helpers
1762 */
1763 static int parse_arg(const char *buf, unsigned long count, int *val)
1764 {
1765 if (!count)
1766 return 0;
1767 if (sscanf(buf, "%i", val) != 1)
1768 return -EINVAL;
1769 return count;
1770 }
1771
1772 static ssize_t store_sys_wmi(struct asus_wmi *asus, int devid,
1773 const char *buf, size_t count)
1774 {
1775 u32 retval;
1776 int rv, err, value;
1777
1778 value = asus_wmi_get_devstate_simple(asus, devid);
1779 if (value < 0)
1780 return value;
1781
1782 rv = parse_arg(buf, count, &value);
1783 err = asus_wmi_set_devstate(devid, value, &retval);
1784
1785 if (err < 0)
1786 return err;
1787
1788 return rv;
1789 }
1790
1791 static ssize_t show_sys_wmi(struct asus_wmi *asus, int devid, char *buf)
1792 {
1793 int value = asus_wmi_get_devstate_simple(asus, devid);
1794
1795 if (value < 0)
1796 return value;
1797
1798 return sprintf(buf, "%d\n", value);
1799 }
1800
1801 #define ASUS_WMI_CREATE_DEVICE_ATTR(_name, _mode, _cm) \
1802 static ssize_t show_##_name(struct device *dev, \
1803 struct device_attribute *attr, \
1804 char *buf) \
1805 { \
1806 struct asus_wmi *asus = dev_get_drvdata(dev); \
1807 \
1808 return show_sys_wmi(asus, _cm, buf); \
1809 } \
1810 static ssize_t store_##_name(struct device *dev, \
1811 struct device_attribute *attr, \
1812 const char *buf, size_t count) \
1813 { \
1814 struct asus_wmi *asus = dev_get_drvdata(dev); \
1815 \
1816 return store_sys_wmi(asus, _cm, buf, count); \
1817 } \
1818 static struct device_attribute dev_attr_##_name = { \
1819 .attr = { \
1820 .name = __stringify(_name), \
1821 .mode = _mode }, \
1822 .show = show_##_name, \
1823 .store = store_##_name, \
1824 }
1825
1826 ASUS_WMI_CREATE_DEVICE_ATTR(touchpad, 0644, ASUS_WMI_DEVID_TOUCHPAD);
1827 ASUS_WMI_CREATE_DEVICE_ATTR(camera, 0644, ASUS_WMI_DEVID_CAMERA);
1828 ASUS_WMI_CREATE_DEVICE_ATTR(cardr, 0644, ASUS_WMI_DEVID_CARDREADER);
1829 ASUS_WMI_CREATE_DEVICE_ATTR(lid_resume, 0644, ASUS_WMI_DEVID_LID_RESUME);
1830 ASUS_WMI_CREATE_DEVICE_ATTR(als_enable, 0644, ASUS_WMI_DEVID_ALS_ENABLE);
1831
1832 static ssize_t cpufv_store(struct device *dev, struct device_attribute *attr,
1833 const char *buf, size_t count)
1834 {
1835 int value, rv;
1836
1837 if (!count || sscanf(buf, "%i", &value) != 1)
1838 return -EINVAL;
1839 if (value < 0 || value > 2)
1840 return -EINVAL;
1841
1842 rv = asus_wmi_evaluate_method(ASUS_WMI_METHODID_CFVS, value, 0, NULL);
1843 if (rv < 0)
1844 return rv;
1845
1846 return count;
1847 }
1848
1849 static DEVICE_ATTR_WO(cpufv);
1850
1851 static struct attribute *platform_attributes[] = {
1852 &dev_attr_cpufv.attr,
1853 &dev_attr_camera.attr,
1854 &dev_attr_cardr.attr,
1855 &dev_attr_touchpad.attr,
1856 &dev_attr_lid_resume.attr,
1857 &dev_attr_als_enable.attr,
1858 NULL
1859 };
1860
1861 static umode_t asus_sysfs_is_visible(struct kobject *kobj,
1862 struct attribute *attr, int idx)
1863 {
1864 struct device *dev = container_of(kobj, struct device, kobj);
1865 struct platform_device *pdev = to_platform_device(dev);
1866 struct asus_wmi *asus = platform_get_drvdata(pdev);
1867 bool ok = true;
1868 int devid = -1;
1869
1870 if (attr == &dev_attr_camera.attr)
1871 devid = ASUS_WMI_DEVID_CAMERA;
1872 else if (attr == &dev_attr_cardr.attr)
1873 devid = ASUS_WMI_DEVID_CARDREADER;
1874 else if (attr == &dev_attr_touchpad.attr)
1875 devid = ASUS_WMI_DEVID_TOUCHPAD;
1876 else if (attr == &dev_attr_lid_resume.attr)
1877 devid = ASUS_WMI_DEVID_LID_RESUME;
1878 else if (attr == &dev_attr_als_enable.attr)
1879 devid = ASUS_WMI_DEVID_ALS_ENABLE;
1880
1881 if (devid != -1)
1882 ok = !(asus_wmi_get_devstate_simple(asus, devid) < 0);
1883
1884 return ok ? attr->mode : 0;
1885 }
1886
1887 static const struct attribute_group platform_attribute_group = {
1888 .is_visible = asus_sysfs_is_visible,
1889 .attrs = platform_attributes
1890 };
1891
1892 static void asus_wmi_sysfs_exit(struct platform_device *device)
1893 {
1894 sysfs_remove_group(&device->dev.kobj, &platform_attribute_group);
1895 }
1896
1897 static int asus_wmi_sysfs_init(struct platform_device *device)
1898 {
1899 return sysfs_create_group(&device->dev.kobj, &platform_attribute_group);
1900 }
1901
1902 /*
1903 * Platform device
1904 */
1905 static int asus_wmi_platform_init(struct asus_wmi *asus)
1906 {
1907 int rv;
1908
1909 /* INIT enable hotkeys on some models */
1910 if (!asus_wmi_evaluate_method(ASUS_WMI_METHODID_INIT, 0, 0, &rv))
1911 pr_info("Initialization: %#x\n", rv);
1912
1913 /* We don't know yet what to do with this version... */
1914 if (!asus_wmi_evaluate_method(ASUS_WMI_METHODID_SPEC, 0, 0x9, &rv)) {
1915 pr_info("BIOS WMI version: %d.%d\n", rv >> 16, rv & 0xFF);
1916 asus->spec = rv;
1917 }
1918
1919 /*
1920 * The SFUN method probably allows the original driver to get the list
1921 * of features supported by a given model. For now, 0x0100 or 0x0800
1922 * bit signifies that the laptop is equipped with a Wi-Fi MiniPCI card.
1923 * The significance of others is yet to be found.
1924 */
1925 if (!asus_wmi_evaluate_method(ASUS_WMI_METHODID_SFUN, 0, 0, &rv)) {
1926 pr_info("SFUN value: %#x\n", rv);
1927 asus->sfun = rv;
1928 }
1929
1930 /*
1931 * Eee PC and Notebooks seems to have different method_id for DSTS,
1932 * but it may also be related to the BIOS's SPEC.
1933 * Note, on most Eeepc, there is no way to check if a method exist
1934 * or note, while on notebooks, they returns 0xFFFFFFFE on failure,
1935 * but once again, SPEC may probably be used for that kind of things.
1936 */
1937 if (!asus_wmi_evaluate_method(ASUS_WMI_METHODID_DSTS, 0, 0, NULL))
1938 asus->dsts_id = ASUS_WMI_METHODID_DSTS;
1939 else
1940 asus->dsts_id = ASUS_WMI_METHODID_DSTS2;
1941
1942 /* CWAP allow to define the behavior of the Fn+F2 key,
1943 * this method doesn't seems to be present on Eee PCs */
1944 if (asus->driver->quirks->wapf >= 0)
1945 asus_wmi_set_devstate(ASUS_WMI_DEVID_CWAP,
1946 asus->driver->quirks->wapf, NULL);
1947
1948 return asus_wmi_sysfs_init(asus->platform_device);
1949 }
1950
1951 static void asus_wmi_platform_exit(struct asus_wmi *asus)
1952 {
1953 asus_wmi_sysfs_exit(asus->platform_device);
1954 }
1955
1956 /*
1957 * debugfs
1958 */
1959 struct asus_wmi_debugfs_node {
1960 struct asus_wmi *asus;
1961 char *name;
1962 int (*show) (struct seq_file *m, void *data);
1963 };
1964
1965 static int show_dsts(struct seq_file *m, void *data)
1966 {
1967 struct asus_wmi *asus = m->private;
1968 int err;
1969 u32 retval = -1;
1970
1971 err = asus_wmi_get_devstate(asus, asus->debug.dev_id, &retval);
1972
1973 if (err < 0)
1974 return err;
1975
1976 seq_printf(m, "DSTS(%#x) = %#x\n", asus->debug.dev_id, retval);
1977
1978 return 0;
1979 }
1980
1981 static int show_devs(struct seq_file *m, void *data)
1982 {
1983 struct asus_wmi *asus = m->private;
1984 int err;
1985 u32 retval = -1;
1986
1987 err = asus_wmi_set_devstate(asus->debug.dev_id, asus->debug.ctrl_param,
1988 &retval);
1989
1990 if (err < 0)
1991 return err;
1992
1993 seq_printf(m, "DEVS(%#x, %#x) = %#x\n", asus->debug.dev_id,
1994 asus->debug.ctrl_param, retval);
1995
1996 return 0;
1997 }
1998
1999 static int show_call(struct seq_file *m, void *data)
2000 {
2001 struct asus_wmi *asus = m->private;
2002 struct bios_args args = {
2003 .arg0 = asus->debug.dev_id,
2004 .arg1 = asus->debug.ctrl_param,
2005 };
2006 struct acpi_buffer input = { (acpi_size) sizeof(args), &args };
2007 struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
2008 union acpi_object *obj;
2009 acpi_status status;
2010
2011 status = wmi_evaluate_method(ASUS_WMI_MGMT_GUID,
2012 0, asus->debug.method_id,
2013 &input, &output);
2014
2015 if (ACPI_FAILURE(status))
2016 return -EIO;
2017
2018 obj = (union acpi_object *)output.pointer;
2019 if (obj && obj->type == ACPI_TYPE_INTEGER)
2020 seq_printf(m, "%#x(%#x, %#x) = %#x\n", asus->debug.method_id,
2021 asus->debug.dev_id, asus->debug.ctrl_param,
2022 (u32) obj->integer.value);
2023 else
2024 seq_printf(m, "%#x(%#x, %#x) = t:%d\n", asus->debug.method_id,
2025 asus->debug.dev_id, asus->debug.ctrl_param,
2026 obj ? obj->type : -1);
2027
2028 kfree(obj);
2029
2030 return 0;
2031 }
2032
2033 static struct asus_wmi_debugfs_node asus_wmi_debug_files[] = {
2034 {NULL, "devs", show_devs},
2035 {NULL, "dsts", show_dsts},
2036 {NULL, "call", show_call},
2037 };
2038
2039 static int asus_wmi_debugfs_open(struct inode *inode, struct file *file)
2040 {
2041 struct asus_wmi_debugfs_node *node = inode->i_private;
2042
2043 return single_open(file, node->show, node->asus);
2044 }
2045
2046 static const struct file_operations asus_wmi_debugfs_io_ops = {
2047 .owner = THIS_MODULE,
2048 .open = asus_wmi_debugfs_open,
2049 .read = seq_read,
2050 .llseek = seq_lseek,
2051 .release = single_release,
2052 };
2053
2054 static void asus_wmi_debugfs_exit(struct asus_wmi *asus)
2055 {
2056 debugfs_remove_recursive(asus->debug.root);
2057 }
2058
2059 static int asus_wmi_debugfs_init(struct asus_wmi *asus)
2060 {
2061 struct dentry *dent;
2062 int i;
2063
2064 asus->debug.root = debugfs_create_dir(asus->driver->name, NULL);
2065 if (!asus->debug.root) {
2066 pr_err("failed to create debugfs directory\n");
2067 goto error_debugfs;
2068 }
2069
2070 dent = debugfs_create_x32("method_id", S_IRUGO | S_IWUSR,
2071 asus->debug.root, &asus->debug.method_id);
2072 if (!dent)
2073 goto error_debugfs;
2074
2075 dent = debugfs_create_x32("dev_id", S_IRUGO | S_IWUSR,
2076 asus->debug.root, &asus->debug.dev_id);
2077 if (!dent)
2078 goto error_debugfs;
2079
2080 dent = debugfs_create_x32("ctrl_param", S_IRUGO | S_IWUSR,
2081 asus->debug.root, &asus->debug.ctrl_param);
2082 if (!dent)
2083 goto error_debugfs;
2084
2085 for (i = 0; i < ARRAY_SIZE(asus_wmi_debug_files); i++) {
2086 struct asus_wmi_debugfs_node *node = &asus_wmi_debug_files[i];
2087
2088 node->asus = asus;
2089 dent = debugfs_create_file(node->name, S_IFREG | S_IRUGO,
2090 asus->debug.root, node,
2091 &asus_wmi_debugfs_io_ops);
2092 if (!dent) {
2093 pr_err("failed to create debug file: %s\n", node->name);
2094 goto error_debugfs;
2095 }
2096 }
2097
2098 return 0;
2099
2100 error_debugfs:
2101 asus_wmi_debugfs_exit(asus);
2102 return -ENOMEM;
2103 }
2104
2105 static int asus_wmi_fan_init(struct asus_wmi *asus)
2106 {
2107 int status;
2108
2109 asus->asus_hwmon_pwm = -1;
2110 asus->asus_hwmon_num_fans = -1;
2111 asus->asus_hwmon_fan_manual_mode = false;
2112
2113 status = asus_hwmon_get_fan_number(asus, &asus->asus_hwmon_num_fans);
2114 if (status) {
2115 asus->asus_hwmon_num_fans = 0;
2116 pr_warn("Could not determine number of fans: %d\n", status);
2117 return -ENXIO;
2118 }
2119
2120 pr_info("Number of fans: %d\n", asus->asus_hwmon_num_fans);
2121 return 0;
2122 }
2123
2124 static bool ashs_present(void)
2125 {
2126 int i = 0;
2127 while (ashs_ids[i]) {
2128 if (acpi_dev_found(ashs_ids[i++]))
2129 return true;
2130 }
2131 return false;
2132 }
2133
2134 /*
2135 * WMI Driver
2136 */
2137 static int asus_wmi_add(struct platform_device *pdev)
2138 {
2139 struct platform_driver *pdrv = to_platform_driver(pdev->dev.driver);
2140 struct asus_wmi_driver *wdrv = to_asus_wmi_driver(pdrv);
2141 struct asus_wmi *asus;
2142 const char *chassis_type;
2143 acpi_status status;
2144 int err;
2145 u32 result;
2146
2147 asus = kzalloc(sizeof(struct asus_wmi), GFP_KERNEL);
2148 if (!asus)
2149 return -ENOMEM;
2150
2151 asus->driver = wdrv;
2152 asus->platform_device = pdev;
2153 wdrv->platform_device = pdev;
2154 platform_set_drvdata(asus->platform_device, asus);
2155
2156 if (wdrv->detect_quirks)
2157 wdrv->detect_quirks(asus->driver);
2158
2159 err = asus_wmi_platform_init(asus);
2160 if (err)
2161 goto fail_platform;
2162
2163 err = asus_wmi_input_init(asus);
2164 if (err)
2165 goto fail_input;
2166
2167 err = asus_wmi_fan_init(asus); /* probably no problems on error */
2168 asus_hwmon_fan_set_auto(asus);
2169
2170 err = asus_wmi_hwmon_init(asus);
2171 if (err)
2172 goto fail_hwmon;
2173
2174 err = asus_wmi_led_init(asus);
2175 if (err)
2176 goto fail_leds;
2177
2178 asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_WLAN, &result);
2179 if (result & (ASUS_WMI_DSTS_PRESENCE_BIT | ASUS_WMI_DSTS_USER_BIT))
2180 asus->driver->wlan_ctrl_by_user = 1;
2181
2182 if (!(asus->driver->wlan_ctrl_by_user && ashs_present())) {
2183 err = asus_wmi_rfkill_init(asus);
2184 if (err)
2185 goto fail_rfkill;
2186 }
2187
2188 if (asus->driver->quirks->wmi_force_als_set)
2189 asus_wmi_set_als();
2190
2191 /* Some Asus desktop boards export an acpi-video backlight interface,
2192 stop this from showing up */
2193 chassis_type = dmi_get_system_info(DMI_CHASSIS_TYPE);
2194 if (chassis_type && !strcmp(chassis_type, "3"))
2195 acpi_video_set_dmi_backlight_type(acpi_backlight_vendor);
2196
2197 if (asus->driver->quirks->wmi_backlight_power)
2198 acpi_video_set_dmi_backlight_type(acpi_backlight_vendor);
2199
2200 if (asus->driver->quirks->wmi_backlight_native)
2201 acpi_video_set_dmi_backlight_type(acpi_backlight_native);
2202
2203 if (asus->driver->quirks->xusb2pr)
2204 asus_wmi_set_xusb2pr(asus);
2205
2206 if (acpi_video_get_backlight_type() == acpi_backlight_vendor) {
2207 err = asus_wmi_backlight_init(asus);
2208 if (err && err != -ENODEV)
2209 goto fail_backlight;
2210 }
2211
2212 status = wmi_install_notify_handler(asus->driver->event_guid,
2213 asus_wmi_notify, asus);
2214 if (ACPI_FAILURE(status)) {
2215 pr_err("Unable to register notify handler - %d\n", status);
2216 err = -ENODEV;
2217 goto fail_wmi_handler;
2218 }
2219
2220 err = asus_wmi_debugfs_init(asus);
2221 if (err)
2222 goto fail_debugfs;
2223
2224 return 0;
2225
2226 fail_debugfs:
2227 wmi_remove_notify_handler(asus->driver->event_guid);
2228 fail_wmi_handler:
2229 asus_wmi_backlight_exit(asus);
2230 fail_backlight:
2231 asus_wmi_rfkill_exit(asus);
2232 fail_rfkill:
2233 asus_wmi_led_exit(asus);
2234 fail_leds:
2235 fail_hwmon:
2236 asus_wmi_input_exit(asus);
2237 fail_input:
2238 asus_wmi_platform_exit(asus);
2239 fail_platform:
2240 kfree(asus);
2241 return err;
2242 }
2243
2244 static int asus_wmi_remove(struct platform_device *device)
2245 {
2246 struct asus_wmi *asus;
2247
2248 asus = platform_get_drvdata(device);
2249 wmi_remove_notify_handler(asus->driver->event_guid);
2250 asus_wmi_backlight_exit(asus);
2251 asus_wmi_input_exit(asus);
2252 asus_wmi_led_exit(asus);
2253 asus_wmi_rfkill_exit(asus);
2254 asus_wmi_debugfs_exit(asus);
2255 asus_wmi_platform_exit(asus);
2256 asus_hwmon_fan_set_auto(asus);
2257
2258 kfree(asus);
2259 return 0;
2260 }
2261
2262 /*
2263 * Platform driver - hibernate/resume callbacks
2264 */
2265 static int asus_hotk_thaw(struct device *device)
2266 {
2267 struct asus_wmi *asus = dev_get_drvdata(device);
2268
2269 if (asus->wlan.rfkill) {
2270 bool wlan;
2271
2272 /*
2273 * Work around bios bug - acpi _PTS turns off the wireless led
2274 * during suspend. Normally it restores it on resume, but
2275 * we should kick it ourselves in case hibernation is aborted.
2276 */
2277 wlan = asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WLAN);
2278 asus_wmi_set_devstate(ASUS_WMI_DEVID_WLAN, wlan, NULL);
2279 }
2280
2281 return 0;
2282 }
2283
2284 static int asus_hotk_resume(struct device *device)
2285 {
2286 struct asus_wmi *asus = dev_get_drvdata(device);
2287
2288 if (!IS_ERR_OR_NULL(asus->kbd_led.dev))
2289 queue_work(asus->led_workqueue, &asus->kbd_led_work);
2290
2291 return 0;
2292 }
2293
2294 static int asus_hotk_restore(struct device *device)
2295 {
2296 struct asus_wmi *asus = dev_get_drvdata(device);
2297 int bl;
2298
2299 /* Refresh both wlan rfkill state and pci hotplug */
2300 if (asus->wlan.rfkill)
2301 asus_rfkill_hotplug(asus);
2302
2303 if (asus->bluetooth.rfkill) {
2304 bl = !asus_wmi_get_devstate_simple(asus,
2305 ASUS_WMI_DEVID_BLUETOOTH);
2306 rfkill_set_sw_state(asus->bluetooth.rfkill, bl);
2307 }
2308 if (asus->wimax.rfkill) {
2309 bl = !asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WIMAX);
2310 rfkill_set_sw_state(asus->wimax.rfkill, bl);
2311 }
2312 if (asus->wwan3g.rfkill) {
2313 bl = !asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WWAN3G);
2314 rfkill_set_sw_state(asus->wwan3g.rfkill, bl);
2315 }
2316 if (asus->gps.rfkill) {
2317 bl = !asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_GPS);
2318 rfkill_set_sw_state(asus->gps.rfkill, bl);
2319 }
2320 if (asus->uwb.rfkill) {
2321 bl = !asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_UWB);
2322 rfkill_set_sw_state(asus->uwb.rfkill, bl);
2323 }
2324 if (!IS_ERR_OR_NULL(asus->kbd_led.dev))
2325 queue_work(asus->led_workqueue, &asus->kbd_led_work);
2326
2327 return 0;
2328 }
2329
2330 static const struct dev_pm_ops asus_pm_ops = {
2331 .thaw = asus_hotk_thaw,
2332 .restore = asus_hotk_restore,
2333 .resume = asus_hotk_resume,
2334 };
2335
2336 static int asus_wmi_probe(struct platform_device *pdev)
2337 {
2338 struct platform_driver *pdrv = to_platform_driver(pdev->dev.driver);
2339 struct asus_wmi_driver *wdrv = to_asus_wmi_driver(pdrv);
2340 int ret;
2341
2342 if (!wmi_has_guid(ASUS_WMI_MGMT_GUID)) {
2343 pr_warn("Management GUID not found\n");
2344 return -ENODEV;
2345 }
2346
2347 if (wdrv->event_guid && !wmi_has_guid(wdrv->event_guid)) {
2348 pr_warn("Event GUID not found\n");
2349 return -ENODEV;
2350 }
2351
2352 if (wdrv->probe) {
2353 ret = wdrv->probe(pdev);
2354 if (ret)
2355 return ret;
2356 }
2357
2358 return asus_wmi_add(pdev);
2359 }
2360
2361 static bool used;
2362
2363 int __init_or_module asus_wmi_register_driver(struct asus_wmi_driver *driver)
2364 {
2365 struct platform_driver *platform_driver;
2366 struct platform_device *platform_device;
2367
2368 if (used)
2369 return -EBUSY;
2370
2371 platform_driver = &driver->platform_driver;
2372 platform_driver->remove = asus_wmi_remove;
2373 platform_driver->driver.owner = driver->owner;
2374 platform_driver->driver.name = driver->name;
2375 platform_driver->driver.pm = &asus_pm_ops;
2376
2377 platform_device = platform_create_bundle(platform_driver,
2378 asus_wmi_probe,
2379 NULL, 0, NULL, 0);
2380 if (IS_ERR(platform_device))
2381 return PTR_ERR(platform_device);
2382
2383 used = true;
2384 return 0;
2385 }
2386 EXPORT_SYMBOL_GPL(asus_wmi_register_driver);
2387
2388 void asus_wmi_unregister_driver(struct asus_wmi_driver *driver)
2389 {
2390 platform_device_unregister(driver->platform_device);
2391 platform_driver_unregister(&driver->platform_driver);
2392 used = false;
2393 }
2394 EXPORT_SYMBOL_GPL(asus_wmi_unregister_driver);
2395
2396 static int __init asus_wmi_init(void)
2397 {
2398 if (!wmi_has_guid(ASUS_WMI_MGMT_GUID)) {
2399 pr_info("Asus Management GUID not found\n");
2400 return -ENODEV;
2401 }
2402
2403 pr_info("ASUS WMI generic driver loaded\n");
2404 return 0;
2405 }
2406
2407 static void __exit asus_wmi_exit(void)
2408 {
2409 pr_info("ASUS WMI generic driver unloaded\n");
2410 }
2411
2412 module_init(asus_wmi_init);
2413 module_exit(asus_wmi_exit);
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