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perf tools: Don't clone maps from parent when synthesizing forks
[linux/fpc-iii.git] / drivers / platform / x86 / asus-wmi.c
blob93ee2d5466f8092978f57bf74ca84ee9c3cc1cc8
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 #define NOTIFY_KBD_BRTTOGGLE 0xc7
71
72 /* WMI Methods */
73 #define ASUS_WMI_METHODID_SPEC 0x43455053 /* BIOS SPECification */
74 #define ASUS_WMI_METHODID_SFBD 0x44424653 /* Set First Boot Device */
75 #define ASUS_WMI_METHODID_GLCD 0x44434C47 /* Get LCD status */
76 #define ASUS_WMI_METHODID_GPID 0x44495047 /* Get Panel ID?? (Resol) */
77 #define ASUS_WMI_METHODID_QMOD 0x444F4D51 /* Quiet MODe */
78 #define ASUS_WMI_METHODID_SPLV 0x4C425053 /* Set Panel Light Value */
79 #define ASUS_WMI_METHODID_AGFN 0x4E464741 /* FaN? */
80 #define ASUS_WMI_METHODID_SFUN 0x4E554653 /* FUNCtionalities */
81 #define ASUS_WMI_METHODID_SDSP 0x50534453 /* Set DiSPlay output */
82 #define ASUS_WMI_METHODID_GDSP 0x50534447 /* Get DiSPlay output */
83 #define ASUS_WMI_METHODID_DEVP 0x50564544 /* DEVice Policy */
84 #define ASUS_WMI_METHODID_OSVR 0x5256534F /* OS VeRsion */
85 #define ASUS_WMI_METHODID_DSTS 0x53544344 /* Device STatuS */
86 #define ASUS_WMI_METHODID_DSTS2 0x53545344 /* Device STatuS #2*/
87 #define ASUS_WMI_METHODID_BSTS 0x53545342 /* Bios STatuS ? */
88 #define ASUS_WMI_METHODID_DEVS 0x53564544 /* DEVice Set */
89 #define ASUS_WMI_METHODID_CFVS 0x53564643 /* CPU Frequency Volt Set */
90 #define ASUS_WMI_METHODID_KBFT 0x5446424B /* KeyBoard FilTer */
91 #define ASUS_WMI_METHODID_INIT 0x54494E49 /* INITialize */
92 #define ASUS_WMI_METHODID_HKEY 0x59454B48 /* Hot KEY ?? */
93
94 #define ASUS_WMI_UNSUPPORTED_METHOD 0xFFFFFFFE
95
96 /* Wireless */
97 #define ASUS_WMI_DEVID_HW_SWITCH 0x00010001
98 #define ASUS_WMI_DEVID_WIRELESS_LED 0x00010002
99 #define ASUS_WMI_DEVID_CWAP 0x00010003
100 #define ASUS_WMI_DEVID_WLAN 0x00010011
101 #define ASUS_WMI_DEVID_WLAN_LED 0x00010012
102 #define ASUS_WMI_DEVID_BLUETOOTH 0x00010013
103 #define ASUS_WMI_DEVID_GPS 0x00010015
104 #define ASUS_WMI_DEVID_WIMAX 0x00010017
105 #define ASUS_WMI_DEVID_WWAN3G 0x00010019
106 #define ASUS_WMI_DEVID_UWB 0x00010021
107
108 /* Leds */
109 /* 0x000200XX and 0x000400XX */
110 #define ASUS_WMI_DEVID_LED1 0x00020011
111 #define ASUS_WMI_DEVID_LED2 0x00020012
112 #define ASUS_WMI_DEVID_LED3 0x00020013
113 #define ASUS_WMI_DEVID_LED4 0x00020014
114 #define ASUS_WMI_DEVID_LED5 0x00020015
115 #define ASUS_WMI_DEVID_LED6 0x00020016
116
117 /* Backlight and Brightness */
118 #define ASUS_WMI_DEVID_ALS_ENABLE 0x00050001 /* Ambient Light Sensor */
119 #define ASUS_WMI_DEVID_BACKLIGHT 0x00050011
120 #define ASUS_WMI_DEVID_BRIGHTNESS 0x00050012
121 #define ASUS_WMI_DEVID_KBD_BACKLIGHT 0x00050021
122 #define ASUS_WMI_DEVID_LIGHT_SENSOR 0x00050022 /* ?? */
123 #define ASUS_WMI_DEVID_LIGHTBAR 0x00050025
124
125 /* Misc */
126 #define ASUS_WMI_DEVID_CAMERA 0x00060013
127
128 /* Storage */
129 #define ASUS_WMI_DEVID_CARDREADER 0x00080013
130
131 /* Input */
132 #define ASUS_WMI_DEVID_TOUCHPAD 0x00100011
133 #define ASUS_WMI_DEVID_TOUCHPAD_LED 0x00100012
134
135 /* Fan, Thermal */
136 #define ASUS_WMI_DEVID_THERMAL_CTRL 0x00110011
137 #define ASUS_WMI_DEVID_FAN_CTRL 0x00110012
138
139 /* Power */
140 #define ASUS_WMI_DEVID_PROCESSOR_STATE 0x00120012
141
142 /* Deep S3 / Resume on LID open */
143 #define ASUS_WMI_DEVID_LID_RESUME 0x00120031
144
145 /* DSTS masks */
146 #define ASUS_WMI_DSTS_STATUS_BIT 0x00000001
147 #define ASUS_WMI_DSTS_UNKNOWN_BIT 0x00000002
148 #define ASUS_WMI_DSTS_PRESENCE_BIT 0x00010000
149 #define ASUS_WMI_DSTS_USER_BIT 0x00020000
150 #define ASUS_WMI_DSTS_BIOS_BIT 0x00040000
151 #define ASUS_WMI_DSTS_BRIGHTNESS_MASK 0x000000FF
152 #define ASUS_WMI_DSTS_MAX_BRIGTH_MASK 0x0000FF00
153 #define ASUS_WMI_DSTS_LIGHTBAR_MASK 0x0000000F
154
155 #define ASUS_FAN_DESC "cpu_fan"
156 #define ASUS_FAN_MFUN 0x13
157 #define ASUS_FAN_SFUN_READ 0x06
158 #define ASUS_FAN_SFUN_WRITE 0x07
159 #define ASUS_FAN_CTRL_MANUAL 1
160 #define ASUS_FAN_CTRL_AUTO 2
161
162 #define USB_INTEL_XUSB2PR 0xD0
163 #define PCI_DEVICE_ID_INTEL_LYNXPOINT_LP_XHCI 0x9c31
164
165 static const char * const ashs_ids[] = { "ATK4001", "ATK4002", NULL };
166
167 static bool ashs_present(void)
168 {
169 int i = 0;
170 while (ashs_ids[i]) {
171 if (acpi_dev_found(ashs_ids[i++]))
172 return true;
173 }
174 return false;
175 }
176
177 struct bios_args {
178 u32 arg0;
179 u32 arg1;
180 } __packed;
181
182 /*
183 * Struct that's used for all methods called via AGFN. Naming is
184 * identically to the AML code.
185 */
186 struct agfn_args {
187 u16 mfun; /* probably "Multi-function" to be called */
188 u16 sfun; /* probably "Sub-function" to be called */
189 u16 len; /* size of the hole struct, including subfunction fields */
190 u8 stas; /* not used by now */
191 u8 err; /* zero on success */
192 } __packed;
193
194 /* struct used for calling fan read and write methods */
195 struct fan_args {
196 struct agfn_args agfn; /* common fields */
197 u8 fan; /* fan number: 0: set auto mode 1: 1st fan */
198 u32 speed; /* read: RPM/100 - write: 0-255 */
199 } __packed;
200
201 /*
202 * <platform>/ - debugfs root directory
203 * dev_id - current dev_id
204 * ctrl_param - current ctrl_param
205 * method_id - current method_id
206 * devs - call DEVS(dev_id, ctrl_param) and print result
207 * dsts - call DSTS(dev_id) and print result
208 * call - call method_id(dev_id, ctrl_param) and print result
209 */
210 struct asus_wmi_debug {
211 struct dentry *root;
212 u32 method_id;
213 u32 dev_id;
214 u32 ctrl_param;
215 };
216
217 struct asus_rfkill {
218 struct asus_wmi *asus;
219 struct rfkill *rfkill;
220 u32 dev_id;
221 };
222
223 struct asus_wmi {
224 int dsts_id;
225 int spec;
226 int sfun;
227
228 struct input_dev *inputdev;
229 struct backlight_device *backlight_device;
230 struct platform_device *platform_device;
231
232 struct led_classdev wlan_led;
233 int wlan_led_wk;
234 struct led_classdev tpd_led;
235 int tpd_led_wk;
236 struct led_classdev kbd_led;
237 int kbd_led_wk;
238 struct led_classdev lightbar_led;
239 int lightbar_led_wk;
240 struct workqueue_struct *led_workqueue;
241 struct work_struct tpd_led_work;
242 struct work_struct kbd_led_work;
243 struct work_struct wlan_led_work;
244 struct work_struct lightbar_led_work;
245
246 struct asus_rfkill wlan;
247 struct asus_rfkill bluetooth;
248 struct asus_rfkill wimax;
249 struct asus_rfkill wwan3g;
250 struct asus_rfkill gps;
251 struct asus_rfkill uwb;
252
253 bool asus_hwmon_fan_manual_mode;
254 int asus_hwmon_num_fans;
255 int asus_hwmon_pwm;
256
257 struct hotplug_slot hotplug_slot;
258 struct mutex hotplug_lock;
259 struct mutex wmi_lock;
260 struct workqueue_struct *hotplug_workqueue;
261 struct work_struct hotplug_work;
262
263 struct asus_wmi_debug debug;
264
265 struct asus_wmi_driver *driver;
266 };
267
268 static int asus_wmi_input_init(struct asus_wmi *asus)
269 {
270 int err;
271
272 asus->inputdev = input_allocate_device();
273 if (!asus->inputdev)
274 return -ENOMEM;
275
276 asus->inputdev->name = asus->driver->input_name;
277 asus->inputdev->phys = asus->driver->input_phys;
278 asus->inputdev->id.bustype = BUS_HOST;
279 asus->inputdev->dev.parent = &asus->platform_device->dev;
280 set_bit(EV_REP, asus->inputdev->evbit);
281
282 err = sparse_keymap_setup(asus->inputdev, asus->driver->keymap, NULL);
283 if (err)
284 goto err_free_dev;
285
286 err = input_register_device(asus->inputdev);
287 if (err)
288 goto err_free_dev;
289
290 return 0;
291
292 err_free_dev:
293 input_free_device(asus->inputdev);
294 return err;
295 }
296
297 static void asus_wmi_input_exit(struct asus_wmi *asus)
298 {
299 if (asus->inputdev)
300 input_unregister_device(asus->inputdev);
301
302 asus->inputdev = NULL;
303 }
304
305 static int asus_wmi_evaluate_method(u32 method_id, u32 arg0, u32 arg1,
306 u32 *retval)
307 {
308 struct bios_args args = {
309 .arg0 = arg0,
310 .arg1 = arg1,
311 };
312 struct acpi_buffer input = { (acpi_size) sizeof(args), &args };
313 struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
314 acpi_status status;
315 union acpi_object *obj;
316 u32 tmp = 0;
317
318 status = wmi_evaluate_method(ASUS_WMI_MGMT_GUID, 0, method_id,
319 &input, &output);
320
321 if (ACPI_FAILURE(status))
322 goto exit;
323
324 obj = (union acpi_object *)output.pointer;
325 if (obj && obj->type == ACPI_TYPE_INTEGER)
326 tmp = (u32) obj->integer.value;
327
328 if (retval)
329 *retval = tmp;
330
331 kfree(obj);
332
333 exit:
334 if (ACPI_FAILURE(status))
335 return -EIO;
336
337 if (tmp == ASUS_WMI_UNSUPPORTED_METHOD)
338 return -ENODEV;
339
340 return 0;
341 }
342
343 static int asus_wmi_evaluate_method_agfn(const struct acpi_buffer args)
344 {
345 struct acpi_buffer input;
346 u64 phys_addr;
347 u32 retval;
348 u32 status = -1;
349
350 /*
351 * Copy to dma capable address otherwise memory corruption occurs as
352 * bios has to be able to access it.
353 */
354 input.pointer = kzalloc(args.length, GFP_DMA | GFP_KERNEL);
355 input.length = args.length;
356 if (!input.pointer)
357 return -ENOMEM;
358 phys_addr = virt_to_phys(input.pointer);
359 memcpy(input.pointer, args.pointer, args.length);
360
361 status = asus_wmi_evaluate_method(ASUS_WMI_METHODID_AGFN,
362 phys_addr, 0, &retval);
363 if (!status)
364 memcpy(args.pointer, input.pointer, args.length);
365
366 kfree(input.pointer);
367 if (status)
368 return -ENXIO;
369
370 return retval;
371 }
372
373 static int asus_wmi_get_devstate(struct asus_wmi *asus, u32 dev_id, u32 *retval)
374 {
375 return asus_wmi_evaluate_method(asus->dsts_id, dev_id, 0, retval);
376 }
377
378 static int asus_wmi_set_devstate(u32 dev_id, u32 ctrl_param,
379 u32 *retval)
380 {
381 return asus_wmi_evaluate_method(ASUS_WMI_METHODID_DEVS, dev_id,
382 ctrl_param, retval);
383 }
384
385 /* Helper for special devices with magic return codes */
386 static int asus_wmi_get_devstate_bits(struct asus_wmi *asus,
387 u32 dev_id, u32 mask)
388 {
389 u32 retval = 0;
390 int err;
391
392 err = asus_wmi_get_devstate(asus, dev_id, &retval);
393
394 if (err < 0)
395 return err;
396
397 if (!(retval & ASUS_WMI_DSTS_PRESENCE_BIT))
398 return -ENODEV;
399
400 if (mask == ASUS_WMI_DSTS_STATUS_BIT) {
401 if (retval & ASUS_WMI_DSTS_UNKNOWN_BIT)
402 return -ENODEV;
403 }
404
405 return retval & mask;
406 }
407
408 static int asus_wmi_get_devstate_simple(struct asus_wmi *asus, u32 dev_id)
409 {
410 return asus_wmi_get_devstate_bits(asus, dev_id,
411 ASUS_WMI_DSTS_STATUS_BIT);
412 }
413
414 /*
415 * LEDs
416 */
417 /*
418 * These functions actually update the LED's, and are called from a
419 * workqueue. By doing this as separate work rather than when the LED
420 * subsystem asks, we avoid messing with the Asus ACPI stuff during a
421 * potentially bad time, such as a timer interrupt.
422 */
423 static void tpd_led_update(struct work_struct *work)
424 {
425 int ctrl_param;
426 struct asus_wmi *asus;
427
428 asus = container_of(work, struct asus_wmi, tpd_led_work);
429
430 ctrl_param = asus->tpd_led_wk;
431 asus_wmi_set_devstate(ASUS_WMI_DEVID_TOUCHPAD_LED, ctrl_param, NULL);
432 }
433
434 static void tpd_led_set(struct led_classdev *led_cdev,
435 enum led_brightness value)
436 {
437 struct asus_wmi *asus;
438
439 asus = container_of(led_cdev, struct asus_wmi, tpd_led);
440
441 asus->tpd_led_wk = !!value;
442 queue_work(asus->led_workqueue, &asus->tpd_led_work);
443 }
444
445 static int read_tpd_led_state(struct asus_wmi *asus)
446 {
447 return asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_TOUCHPAD_LED);
448 }
449
450 static enum led_brightness tpd_led_get(struct led_classdev *led_cdev)
451 {
452 struct asus_wmi *asus;
453
454 asus = container_of(led_cdev, struct asus_wmi, tpd_led);
455
456 return read_tpd_led_state(asus);
457 }
458
459 static void kbd_led_update(struct work_struct *work)
460 {
461 int ctrl_param = 0;
462 struct asus_wmi *asus;
463
464 asus = container_of(work, struct asus_wmi, kbd_led_work);
465
466 /*
467 * bits 0-2: level
468 * bit 7: light on/off
469 */
470 if (asus->kbd_led_wk > 0)
471 ctrl_param = 0x80 | (asus->kbd_led_wk & 0x7F);
472
473 asus_wmi_set_devstate(ASUS_WMI_DEVID_KBD_BACKLIGHT, ctrl_param, NULL);
474 led_classdev_notify_brightness_hw_changed(&asus->kbd_led, asus->kbd_led_wk);
475 }
476
477 static int kbd_led_read(struct asus_wmi *asus, int *level, int *env)
478 {
479 int retval;
480
481 /*
482 * bits 0-2: level
483 * bit 7: light on/off
484 * bit 8-10: environment (0: dark, 1: normal, 2: light)
485 * bit 17: status unknown
486 */
487 retval = asus_wmi_get_devstate_bits(asus, ASUS_WMI_DEVID_KBD_BACKLIGHT,
488 0xFFFF);
489
490 /* Unknown status is considered as off */
491 if (retval == 0x8000)
492 retval = 0;
493
494 if (retval >= 0) {
495 if (level)
496 *level = retval & 0x7F;
497 if (env)
498 *env = (retval >> 8) & 0x7F;
499 retval = 0;
500 }
501
502 return retval;
503 }
504
505 static void do_kbd_led_set(struct led_classdev *led_cdev, int value)
506 {
507 struct asus_wmi *asus;
508 int max_level;
509
510 asus = container_of(led_cdev, struct asus_wmi, kbd_led);
511 max_level = asus->kbd_led.max_brightness;
512
513 if (value > max_level)
514 value = max_level;
515 else if (value < 0)
516 value = 0;
517
518 asus->kbd_led_wk = value;
519 queue_work(asus->led_workqueue, &asus->kbd_led_work);
520 }
521
522 static void kbd_led_set(struct led_classdev *led_cdev,
523 enum led_brightness value)
524 {
525 do_kbd_led_set(led_cdev, value);
526 }
527
528 static enum led_brightness kbd_led_get(struct led_classdev *led_cdev)
529 {
530 struct asus_wmi *asus;
531 int retval, value;
532
533 asus = container_of(led_cdev, struct asus_wmi, kbd_led);
534
535 retval = kbd_led_read(asus, &value, NULL);
536
537 if (retval < 0)
538 return retval;
539
540 return value;
541 }
542
543 static int wlan_led_unknown_state(struct asus_wmi *asus)
544 {
545 u32 result;
546
547 asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_WIRELESS_LED, &result);
548
549 return result & ASUS_WMI_DSTS_UNKNOWN_BIT;
550 }
551
552 static int wlan_led_presence(struct asus_wmi *asus)
553 {
554 u32 result;
555
556 asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_WIRELESS_LED, &result);
557
558 return result & ASUS_WMI_DSTS_PRESENCE_BIT;
559 }
560
561 static void wlan_led_update(struct work_struct *work)
562 {
563 int ctrl_param;
564 struct asus_wmi *asus;
565
566 asus = container_of(work, struct asus_wmi, wlan_led_work);
567
568 ctrl_param = asus->wlan_led_wk;
569 asus_wmi_set_devstate(ASUS_WMI_DEVID_WIRELESS_LED, ctrl_param, NULL);
570 }
571
572 static void wlan_led_set(struct led_classdev *led_cdev,
573 enum led_brightness value)
574 {
575 struct asus_wmi *asus;
576
577 asus = container_of(led_cdev, struct asus_wmi, wlan_led);
578
579 asus->wlan_led_wk = !!value;
580 queue_work(asus->led_workqueue, &asus->wlan_led_work);
581 }
582
583 static enum led_brightness wlan_led_get(struct led_classdev *led_cdev)
584 {
585 struct asus_wmi *asus;
586 u32 result;
587
588 asus = container_of(led_cdev, struct asus_wmi, wlan_led);
589 asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_WIRELESS_LED, &result);
590
591 return result & ASUS_WMI_DSTS_BRIGHTNESS_MASK;
592 }
593
594 static void lightbar_led_update(struct work_struct *work)
595 {
596 struct asus_wmi *asus;
597 int ctrl_param;
598
599 asus = container_of(work, struct asus_wmi, lightbar_led_work);
600
601 ctrl_param = asus->lightbar_led_wk;
602 asus_wmi_set_devstate(ASUS_WMI_DEVID_LIGHTBAR, ctrl_param, NULL);
603 }
604
605 static void lightbar_led_set(struct led_classdev *led_cdev,
606 enum led_brightness value)
607 {
608 struct asus_wmi *asus;
609
610 asus = container_of(led_cdev, struct asus_wmi, lightbar_led);
611
612 asus->lightbar_led_wk = !!value;
613 queue_work(asus->led_workqueue, &asus->lightbar_led_work);
614 }
615
616 static enum led_brightness lightbar_led_get(struct led_classdev *led_cdev)
617 {
618 struct asus_wmi *asus;
619 u32 result;
620
621 asus = container_of(led_cdev, struct asus_wmi, lightbar_led);
622 asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_LIGHTBAR, &result);
623
624 return result & ASUS_WMI_DSTS_LIGHTBAR_MASK;
625 }
626
627 static int lightbar_led_presence(struct asus_wmi *asus)
628 {
629 u32 result;
630
631 asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_LIGHTBAR, &result);
632
633 return result & ASUS_WMI_DSTS_PRESENCE_BIT;
634 }
635
636 static void asus_wmi_led_exit(struct asus_wmi *asus)
637 {
638 if (!IS_ERR_OR_NULL(asus->kbd_led.dev))
639 led_classdev_unregister(&asus->kbd_led);
640 if (!IS_ERR_OR_NULL(asus->tpd_led.dev))
641 led_classdev_unregister(&asus->tpd_led);
642 if (!IS_ERR_OR_NULL(asus->wlan_led.dev))
643 led_classdev_unregister(&asus->wlan_led);
644 if (!IS_ERR_OR_NULL(asus->lightbar_led.dev))
645 led_classdev_unregister(&asus->lightbar_led);
646 if (asus->led_workqueue)
647 destroy_workqueue(asus->led_workqueue);
648 }
649
650 static int asus_wmi_led_init(struct asus_wmi *asus)
651 {
652 int rv = 0, led_val;
653
654 asus->led_workqueue = create_singlethread_workqueue("led_workqueue");
655 if (!asus->led_workqueue)
656 return -ENOMEM;
657
658 if (read_tpd_led_state(asus) >= 0) {
659 INIT_WORK(&asus->tpd_led_work, tpd_led_update);
660
661 asus->tpd_led.name = "asus::touchpad";
662 asus->tpd_led.brightness_set = tpd_led_set;
663 asus->tpd_led.brightness_get = tpd_led_get;
664 asus->tpd_led.max_brightness = 1;
665
666 rv = led_classdev_register(&asus->platform_device->dev,
667 &asus->tpd_led);
668 if (rv)
669 goto error;
670 }
671
672 led_val = kbd_led_read(asus, NULL, NULL);
673 if (led_val >= 0) {
674 INIT_WORK(&asus->kbd_led_work, kbd_led_update);
675
676 asus->kbd_led_wk = led_val;
677 asus->kbd_led.name = "asus::kbd_backlight";
678 asus->kbd_led.flags = LED_BRIGHT_HW_CHANGED;
679 asus->kbd_led.brightness_set = kbd_led_set;
680 asus->kbd_led.brightness_get = kbd_led_get;
681 asus->kbd_led.max_brightness = 3;
682
683 rv = led_classdev_register(&asus->platform_device->dev,
684 &asus->kbd_led);
685 if (rv)
686 goto error;
687 }
688
689 if (wlan_led_presence(asus) && (asus->driver->quirks->wapf > 0)) {
690 INIT_WORK(&asus->wlan_led_work, wlan_led_update);
691
692 asus->wlan_led.name = "asus::wlan";
693 asus->wlan_led.brightness_set = wlan_led_set;
694 if (!wlan_led_unknown_state(asus))
695 asus->wlan_led.brightness_get = wlan_led_get;
696 asus->wlan_led.flags = LED_CORE_SUSPENDRESUME;
697 asus->wlan_led.max_brightness = 1;
698 asus->wlan_led.default_trigger = "asus-wlan";
699
700 rv = led_classdev_register(&asus->platform_device->dev,
701 &asus->wlan_led);
702 if (rv)
703 goto error;
704 }
705
706 if (lightbar_led_presence(asus)) {
707 INIT_WORK(&asus->lightbar_led_work, lightbar_led_update);
708
709 asus->lightbar_led.name = "asus::lightbar";
710 asus->lightbar_led.brightness_set = lightbar_led_set;
711 asus->lightbar_led.brightness_get = lightbar_led_get;
712 asus->lightbar_led.max_brightness = 1;
713
714 rv = led_classdev_register(&asus->platform_device->dev,
715 &asus->lightbar_led);
716 }
717
718 error:
719 if (rv)
720 asus_wmi_led_exit(asus);
721
722 return rv;
723 }
724
725
726 /*
727 * PCI hotplug (for wlan rfkill)
728 */
729 static bool asus_wlan_rfkill_blocked(struct asus_wmi *asus)
730 {
731 int result = asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WLAN);
732
733 if (result < 0)
734 return false;
735 return !result;
736 }
737
738 static void asus_rfkill_hotplug(struct asus_wmi *asus)
739 {
740 struct pci_dev *dev;
741 struct pci_bus *bus;
742 bool blocked;
743 bool absent;
744 u32 l;
745
746 mutex_lock(&asus->wmi_lock);
747 blocked = asus_wlan_rfkill_blocked(asus);
748 mutex_unlock(&asus->wmi_lock);
749
750 mutex_lock(&asus->hotplug_lock);
751 pci_lock_rescan_remove();
752
753 if (asus->wlan.rfkill)
754 rfkill_set_sw_state(asus->wlan.rfkill, blocked);
755
756 if (asus->hotplug_slot.ops) {
757 bus = pci_find_bus(0, 1);
758 if (!bus) {
759 pr_warn("Unable to find PCI bus 1?\n");
760 goto out_unlock;
761 }
762
763 if (pci_bus_read_config_dword(bus, 0, PCI_VENDOR_ID, &l)) {
764 pr_err("Unable to read PCI config space?\n");
765 goto out_unlock;
766 }
767 absent = (l == 0xffffffff);
768
769 if (blocked != absent) {
770 pr_warn("BIOS says wireless lan is %s, "
771 "but the pci device is %s\n",
772 blocked ? "blocked" : "unblocked",
773 absent ? "absent" : "present");
774 pr_warn("skipped wireless hotplug as probably "
775 "inappropriate for this model\n");
776 goto out_unlock;
777 }
778
779 if (!blocked) {
780 dev = pci_get_slot(bus, 0);
781 if (dev) {
782 /* Device already present */
783 pci_dev_put(dev);
784 goto out_unlock;
785 }
786 dev = pci_scan_single_device(bus, 0);
787 if (dev) {
788 pci_bus_assign_resources(bus);
789 pci_bus_add_device(dev);
790 }
791 } else {
792 dev = pci_get_slot(bus, 0);
793 if (dev) {
794 pci_stop_and_remove_bus_device(dev);
795 pci_dev_put(dev);
796 }
797 }
798 }
799
800 out_unlock:
801 pci_unlock_rescan_remove();
802 mutex_unlock(&asus->hotplug_lock);
803 }
804
805 static void asus_rfkill_notify(acpi_handle handle, u32 event, void *data)
806 {
807 struct asus_wmi *asus = data;
808
809 if (event != ACPI_NOTIFY_BUS_CHECK)
810 return;
811
812 /*
813 * We can't call directly asus_rfkill_hotplug because most
814 * of the time WMBC is still being executed and not reetrant.
815 * There is currently no way to tell ACPICA that we want this
816 * method to be serialized, we schedule a asus_rfkill_hotplug
817 * call later, in a safer context.
818 */
819 queue_work(asus->hotplug_workqueue, &asus->hotplug_work);
820 }
821
822 static int asus_register_rfkill_notifier(struct asus_wmi *asus, char *node)
823 {
824 acpi_status status;
825 acpi_handle handle;
826
827 status = acpi_get_handle(NULL, node, &handle);
828
829 if (ACPI_SUCCESS(status)) {
830 status = acpi_install_notify_handler(handle,
831 ACPI_SYSTEM_NOTIFY,
832 asus_rfkill_notify, asus);
833 if (ACPI_FAILURE(status))
834 pr_warn("Failed to register notify on %s\n", node);
835 } else
836 return -ENODEV;
837
838 return 0;
839 }
840
841 static void asus_unregister_rfkill_notifier(struct asus_wmi *asus, char *node)
842 {
843 acpi_status status = AE_OK;
844 acpi_handle handle;
845
846 status = acpi_get_handle(NULL, node, &handle);
847
848 if (ACPI_SUCCESS(status)) {
849 status = acpi_remove_notify_handler(handle,
850 ACPI_SYSTEM_NOTIFY,
851 asus_rfkill_notify);
852 if (ACPI_FAILURE(status))
853 pr_err("Error removing rfkill notify handler %s\n",
854 node);
855 }
856 }
857
858 static int asus_get_adapter_status(struct hotplug_slot *hotplug_slot,
859 u8 *value)
860 {
861 struct asus_wmi *asus = container_of(hotplug_slot,
862 struct asus_wmi, hotplug_slot);
863 int result = asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WLAN);
864
865 if (result < 0)
866 return result;
867
868 *value = !!result;
869 return 0;
870 }
871
872 static const struct hotplug_slot_ops asus_hotplug_slot_ops = {
873 .get_adapter_status = asus_get_adapter_status,
874 .get_power_status = asus_get_adapter_status,
875 };
876
877 static void asus_hotplug_work(struct work_struct *work)
878 {
879 struct asus_wmi *asus;
880
881 asus = container_of(work, struct asus_wmi, hotplug_work);
882 asus_rfkill_hotplug(asus);
883 }
884
885 static int asus_setup_pci_hotplug(struct asus_wmi *asus)
886 {
887 int ret = -ENOMEM;
888 struct pci_bus *bus = pci_find_bus(0, 1);
889
890 if (!bus) {
891 pr_err("Unable to find wifi PCI bus\n");
892 return -ENODEV;
893 }
894
895 asus->hotplug_workqueue =
896 create_singlethread_workqueue("hotplug_workqueue");
897 if (!asus->hotplug_workqueue)
898 goto error_workqueue;
899
900 INIT_WORK(&asus->hotplug_work, asus_hotplug_work);
901
902 asus->hotplug_slot.ops = &asus_hotplug_slot_ops;
903
904 ret = pci_hp_register(&asus->hotplug_slot, bus, 0, "asus-wifi");
905 if (ret) {
906 pr_err("Unable to register hotplug slot - %d\n", ret);
907 goto error_register;
908 }
909
910 return 0;
911
912 error_register:
913 asus->hotplug_slot.ops = NULL;
914 destroy_workqueue(asus->hotplug_workqueue);
915 error_workqueue:
916 return ret;
917 }
918
919 /*
920 * Rfkill devices
921 */
922 static int asus_rfkill_set(void *data, bool blocked)
923 {
924 struct asus_rfkill *priv = data;
925 u32 ctrl_param = !blocked;
926 u32 dev_id = priv->dev_id;
927
928 /*
929 * If the user bit is set, BIOS can't set and record the wlan status,
930 * it will report the value read from id ASUS_WMI_DEVID_WLAN_LED
931 * while we query the wlan status through WMI(ASUS_WMI_DEVID_WLAN).
932 * So, we have to record wlan status in id ASUS_WMI_DEVID_WLAN_LED
933 * while setting the wlan status through WMI.
934 * This is also the behavior that windows app will do.
935 */
936 if ((dev_id == ASUS_WMI_DEVID_WLAN) &&
937 priv->asus->driver->wlan_ctrl_by_user)
938 dev_id = ASUS_WMI_DEVID_WLAN_LED;
939
940 return asus_wmi_set_devstate(dev_id, ctrl_param, NULL);
941 }
942
943 static void asus_rfkill_query(struct rfkill *rfkill, void *data)
944 {
945 struct asus_rfkill *priv = data;
946 int result;
947
948 result = asus_wmi_get_devstate_simple(priv->asus, priv->dev_id);
949
950 if (result < 0)
951 return;
952
953 rfkill_set_sw_state(priv->rfkill, !result);
954 }
955
956 static int asus_rfkill_wlan_set(void *data, bool blocked)
957 {
958 struct asus_rfkill *priv = data;
959 struct asus_wmi *asus = priv->asus;
960 int ret;
961
962 /*
963 * This handler is enabled only if hotplug is enabled.
964 * In this case, the asus_wmi_set_devstate() will
965 * trigger a wmi notification and we need to wait
966 * this call to finish before being able to call
967 * any wmi method
968 */
969 mutex_lock(&asus->wmi_lock);
970 ret = asus_rfkill_set(data, blocked);
971 mutex_unlock(&asus->wmi_lock);
972 return ret;
973 }
974
975 static const struct rfkill_ops asus_rfkill_wlan_ops = {
976 .set_block = asus_rfkill_wlan_set,
977 .query = asus_rfkill_query,
978 };
979
980 static const struct rfkill_ops asus_rfkill_ops = {
981 .set_block = asus_rfkill_set,
982 .query = asus_rfkill_query,
983 };
984
985 static int asus_new_rfkill(struct asus_wmi *asus,
986 struct asus_rfkill *arfkill,
987 const char *name, enum rfkill_type type, int dev_id)
988 {
989 int result = asus_wmi_get_devstate_simple(asus, dev_id);
990 struct rfkill **rfkill = &arfkill->rfkill;
991
992 if (result < 0)
993 return result;
994
995 arfkill->dev_id = dev_id;
996 arfkill->asus = asus;
997
998 if (dev_id == ASUS_WMI_DEVID_WLAN &&
999 asus->driver->quirks->hotplug_wireless)
1000 *rfkill = rfkill_alloc(name, &asus->platform_device->dev, type,
1001 &asus_rfkill_wlan_ops, arfkill);
1002 else
1003 *rfkill = rfkill_alloc(name, &asus->platform_device->dev, type,
1004 &asus_rfkill_ops, arfkill);
1005
1006 if (!*rfkill)
1007 return -EINVAL;
1008
1009 if ((dev_id == ASUS_WMI_DEVID_WLAN) &&
1010 (asus->driver->quirks->wapf > 0))
1011 rfkill_set_led_trigger_name(*rfkill, "asus-wlan");
1012
1013 rfkill_init_sw_state(*rfkill, !result);
1014 result = rfkill_register(*rfkill);
1015 if (result) {
1016 rfkill_destroy(*rfkill);
1017 *rfkill = NULL;
1018 return result;
1019 }
1020 return 0;
1021 }
1022
1023 static void asus_wmi_rfkill_exit(struct asus_wmi *asus)
1024 {
1025 if (asus->driver->wlan_ctrl_by_user && ashs_present())
1026 return;
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.ops)
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 (code == NOTIFY_KBD_BRTUP) {
1749 do_kbd_led_set(&asus->kbd_led, asus->kbd_led_wk + 1);
1750 goto exit;
1751 }
1752 if (code == NOTIFY_KBD_BRTDWN) {
1753 do_kbd_led_set(&asus->kbd_led, asus->kbd_led_wk - 1);
1754 goto exit;
1755 }
1756 if (code == NOTIFY_KBD_BRTTOGGLE) {
1757 if (asus->kbd_led_wk == asus->kbd_led.max_brightness)
1758 do_kbd_led_set(&asus->kbd_led, 0);
1759 else
1760 do_kbd_led_set(&asus->kbd_led, asus->kbd_led_wk + 1);
1761 goto exit;
1762 }
1763
1764 if (is_display_toggle(code) &&
1765 asus->driver->quirks->no_display_toggle)
1766 goto exit;
1767
1768 if (!sparse_keymap_report_event(asus->inputdev, code,
1769 key_value, autorelease))
1770 pr_info("Unknown key %x pressed\n", code);
1771
1772 exit:
1773 kfree(obj);
1774 }
1775
1776 /*
1777 * Sys helpers
1778 */
1779 static int parse_arg(const char *buf, unsigned long count, int *val)
1780 {
1781 if (!count)
1782 return 0;
1783 if (sscanf(buf, "%i", val) != 1)
1784 return -EINVAL;
1785 return count;
1786 }
1787
1788 static ssize_t store_sys_wmi(struct asus_wmi *asus, int devid,
1789 const char *buf, size_t count)
1790 {
1791 u32 retval;
1792 int rv, err, value;
1793
1794 value = asus_wmi_get_devstate_simple(asus, devid);
1795 if (value < 0)
1796 return value;
1797
1798 rv = parse_arg(buf, count, &value);
1799 err = asus_wmi_set_devstate(devid, value, &retval);
1800
1801 if (err < 0)
1802 return err;
1803
1804 return rv;
1805 }
1806
1807 static ssize_t show_sys_wmi(struct asus_wmi *asus, int devid, char *buf)
1808 {
1809 int value = asus_wmi_get_devstate_simple(asus, devid);
1810
1811 if (value < 0)
1812 return value;
1813
1814 return sprintf(buf, "%d\n", value);
1815 }
1816
1817 #define ASUS_WMI_CREATE_DEVICE_ATTR(_name, _mode, _cm) \
1818 static ssize_t show_##_name(struct device *dev, \
1819 struct device_attribute *attr, \
1820 char *buf) \
1821 { \
1822 struct asus_wmi *asus = dev_get_drvdata(dev); \
1823 \
1824 return show_sys_wmi(asus, _cm, buf); \
1825 } \
1826 static ssize_t store_##_name(struct device *dev, \
1827 struct device_attribute *attr, \
1828 const char *buf, size_t count) \
1829 { \
1830 struct asus_wmi *asus = dev_get_drvdata(dev); \
1831 \
1832 return store_sys_wmi(asus, _cm, buf, count); \
1833 } \
1834 static struct device_attribute dev_attr_##_name = { \
1835 .attr = { \
1836 .name = __stringify(_name), \
1837 .mode = _mode }, \
1838 .show = show_##_name, \
1839 .store = store_##_name, \
1840 }
1841
1842 ASUS_WMI_CREATE_DEVICE_ATTR(touchpad, 0644, ASUS_WMI_DEVID_TOUCHPAD);
1843 ASUS_WMI_CREATE_DEVICE_ATTR(camera, 0644, ASUS_WMI_DEVID_CAMERA);
1844 ASUS_WMI_CREATE_DEVICE_ATTR(cardr, 0644, ASUS_WMI_DEVID_CARDREADER);
1845 ASUS_WMI_CREATE_DEVICE_ATTR(lid_resume, 0644, ASUS_WMI_DEVID_LID_RESUME);
1846 ASUS_WMI_CREATE_DEVICE_ATTR(als_enable, 0644, ASUS_WMI_DEVID_ALS_ENABLE);
1847
1848 static ssize_t cpufv_store(struct device *dev, struct device_attribute *attr,
1849 const char *buf, size_t count)
1850 {
1851 int value, rv;
1852
1853 if (!count || sscanf(buf, "%i", &value) != 1)
1854 return -EINVAL;
1855 if (value < 0 || value > 2)
1856 return -EINVAL;
1857
1858 rv = asus_wmi_evaluate_method(ASUS_WMI_METHODID_CFVS, value, 0, NULL);
1859 if (rv < 0)
1860 return rv;
1861
1862 return count;
1863 }
1864
1865 static DEVICE_ATTR_WO(cpufv);
1866
1867 static struct attribute *platform_attributes[] = {
1868 &dev_attr_cpufv.attr,
1869 &dev_attr_camera.attr,
1870 &dev_attr_cardr.attr,
1871 &dev_attr_touchpad.attr,
1872 &dev_attr_lid_resume.attr,
1873 &dev_attr_als_enable.attr,
1874 NULL
1875 };
1876
1877 static umode_t asus_sysfs_is_visible(struct kobject *kobj,
1878 struct attribute *attr, int idx)
1879 {
1880 struct device *dev = container_of(kobj, struct device, kobj);
1881 struct asus_wmi *asus = dev_get_drvdata(dev);
1882 bool ok = true;
1883 int devid = -1;
1884
1885 if (attr == &dev_attr_camera.attr)
1886 devid = ASUS_WMI_DEVID_CAMERA;
1887 else if (attr == &dev_attr_cardr.attr)
1888 devid = ASUS_WMI_DEVID_CARDREADER;
1889 else if (attr == &dev_attr_touchpad.attr)
1890 devid = ASUS_WMI_DEVID_TOUCHPAD;
1891 else if (attr == &dev_attr_lid_resume.attr)
1892 devid = ASUS_WMI_DEVID_LID_RESUME;
1893 else if (attr == &dev_attr_als_enable.attr)
1894 devid = ASUS_WMI_DEVID_ALS_ENABLE;
1895
1896 if (devid != -1)
1897 ok = !(asus_wmi_get_devstate_simple(asus, devid) < 0);
1898
1899 return ok ? attr->mode : 0;
1900 }
1901
1902 static const struct attribute_group platform_attribute_group = {
1903 .is_visible = asus_sysfs_is_visible,
1904 .attrs = platform_attributes
1905 };
1906
1907 static void asus_wmi_sysfs_exit(struct platform_device *device)
1908 {
1909 sysfs_remove_group(&device->dev.kobj, &platform_attribute_group);
1910 }
1911
1912 static int asus_wmi_sysfs_init(struct platform_device *device)
1913 {
1914 return sysfs_create_group(&device->dev.kobj, &platform_attribute_group);
1915 }
1916
1917 /*
1918 * Platform device
1919 */
1920 static int asus_wmi_platform_init(struct asus_wmi *asus)
1921 {
1922 int rv;
1923
1924 /* INIT enable hotkeys on some models */
1925 if (!asus_wmi_evaluate_method(ASUS_WMI_METHODID_INIT, 0, 0, &rv))
1926 pr_info("Initialization: %#x\n", rv);
1927
1928 /* We don't know yet what to do with this version... */
1929 if (!asus_wmi_evaluate_method(ASUS_WMI_METHODID_SPEC, 0, 0x9, &rv)) {
1930 pr_info("BIOS WMI version: %d.%d\n", rv >> 16, rv & 0xFF);
1931 asus->spec = rv;
1932 }
1933
1934 /*
1935 * The SFUN method probably allows the original driver to get the list
1936 * of features supported by a given model. For now, 0x0100 or 0x0800
1937 * bit signifies that the laptop is equipped with a Wi-Fi MiniPCI card.
1938 * The significance of others is yet to be found.
1939 */
1940 if (!asus_wmi_evaluate_method(ASUS_WMI_METHODID_SFUN, 0, 0, &rv)) {
1941 pr_info("SFUN value: %#x\n", rv);
1942 asus->sfun = rv;
1943 }
1944
1945 /*
1946 * Eee PC and Notebooks seems to have different method_id for DSTS,
1947 * but it may also be related to the BIOS's SPEC.
1948 * Note, on most Eeepc, there is no way to check if a method exist
1949 * or note, while on notebooks, they returns 0xFFFFFFFE on failure,
1950 * but once again, SPEC may probably be used for that kind of things.
1951 */
1952 if (!asus_wmi_evaluate_method(ASUS_WMI_METHODID_DSTS, 0, 0, NULL))
1953 asus->dsts_id = ASUS_WMI_METHODID_DSTS;
1954 else
1955 asus->dsts_id = ASUS_WMI_METHODID_DSTS2;
1956
1957 /* CWAP allow to define the behavior of the Fn+F2 key,
1958 * this method doesn't seems to be present on Eee PCs */
1959 if (asus->driver->quirks->wapf >= 0)
1960 asus_wmi_set_devstate(ASUS_WMI_DEVID_CWAP,
1961 asus->driver->quirks->wapf, NULL);
1962
1963 return asus_wmi_sysfs_init(asus->platform_device);
1964 }
1965
1966 static void asus_wmi_platform_exit(struct asus_wmi *asus)
1967 {
1968 asus_wmi_sysfs_exit(asus->platform_device);
1969 }
1970
1971 /*
1972 * debugfs
1973 */
1974 struct asus_wmi_debugfs_node {
1975 struct asus_wmi *asus;
1976 char *name;
1977 int (*show) (struct seq_file *m, void *data);
1978 };
1979
1980 static int show_dsts(struct seq_file *m, void *data)
1981 {
1982 struct asus_wmi *asus = m->private;
1983 int err;
1984 u32 retval = -1;
1985
1986 err = asus_wmi_get_devstate(asus, asus->debug.dev_id, &retval);
1987
1988 if (err < 0)
1989 return err;
1990
1991 seq_printf(m, "DSTS(%#x) = %#x\n", asus->debug.dev_id, retval);
1992
1993 return 0;
1994 }
1995
1996 static int show_devs(struct seq_file *m, void *data)
1997 {
1998 struct asus_wmi *asus = m->private;
1999 int err;
2000 u32 retval = -1;
2001
2002 err = asus_wmi_set_devstate(asus->debug.dev_id, asus->debug.ctrl_param,
2003 &retval);
2004
2005 if (err < 0)
2006 return err;
2007
2008 seq_printf(m, "DEVS(%#x, %#x) = %#x\n", asus->debug.dev_id,
2009 asus->debug.ctrl_param, retval);
2010
2011 return 0;
2012 }
2013
2014 static int show_call(struct seq_file *m, void *data)
2015 {
2016 struct asus_wmi *asus = m->private;
2017 struct bios_args args = {
2018 .arg0 = asus->debug.dev_id,
2019 .arg1 = asus->debug.ctrl_param,
2020 };
2021 struct acpi_buffer input = { (acpi_size) sizeof(args), &args };
2022 struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
2023 union acpi_object *obj;
2024 acpi_status status;
2025
2026 status = wmi_evaluate_method(ASUS_WMI_MGMT_GUID,
2027 0, asus->debug.method_id,
2028 &input, &output);
2029
2030 if (ACPI_FAILURE(status))
2031 return -EIO;
2032
2033 obj = (union acpi_object *)output.pointer;
2034 if (obj && obj->type == ACPI_TYPE_INTEGER)
2035 seq_printf(m, "%#x(%#x, %#x) = %#x\n", asus->debug.method_id,
2036 asus->debug.dev_id, asus->debug.ctrl_param,
2037 (u32) obj->integer.value);
2038 else
2039 seq_printf(m, "%#x(%#x, %#x) = t:%d\n", asus->debug.method_id,
2040 asus->debug.dev_id, asus->debug.ctrl_param,
2041 obj ? obj->type : -1);
2042
2043 kfree(obj);
2044
2045 return 0;
2046 }
2047
2048 static struct asus_wmi_debugfs_node asus_wmi_debug_files[] = {
2049 {NULL, "devs", show_devs},
2050 {NULL, "dsts", show_dsts},
2051 {NULL, "call", show_call},
2052 };
2053
2054 static int asus_wmi_debugfs_open(struct inode *inode, struct file *file)
2055 {
2056 struct asus_wmi_debugfs_node *node = inode->i_private;
2057
2058 return single_open(file, node->show, node->asus);
2059 }
2060
2061 static const struct file_operations asus_wmi_debugfs_io_ops = {
2062 .owner = THIS_MODULE,
2063 .open = asus_wmi_debugfs_open,
2064 .read = seq_read,
2065 .llseek = seq_lseek,
2066 .release = single_release,
2067 };
2068
2069 static void asus_wmi_debugfs_exit(struct asus_wmi *asus)
2070 {
2071 debugfs_remove_recursive(asus->debug.root);
2072 }
2073
2074 static int asus_wmi_debugfs_init(struct asus_wmi *asus)
2075 {
2076 struct dentry *dent;
2077 int i;
2078
2079 asus->debug.root = debugfs_create_dir(asus->driver->name, NULL);
2080 if (!asus->debug.root) {
2081 pr_err("failed to create debugfs directory\n");
2082 goto error_debugfs;
2083 }
2084
2085 dent = debugfs_create_x32("method_id", S_IRUGO | S_IWUSR,
2086 asus->debug.root, &asus->debug.method_id);
2087 if (!dent)
2088 goto error_debugfs;
2089
2090 dent = debugfs_create_x32("dev_id", S_IRUGO | S_IWUSR,
2091 asus->debug.root, &asus->debug.dev_id);
2092 if (!dent)
2093 goto error_debugfs;
2094
2095 dent = debugfs_create_x32("ctrl_param", S_IRUGO | S_IWUSR,
2096 asus->debug.root, &asus->debug.ctrl_param);
2097 if (!dent)
2098 goto error_debugfs;
2099
2100 for (i = 0; i < ARRAY_SIZE(asus_wmi_debug_files); i++) {
2101 struct asus_wmi_debugfs_node *node = &asus_wmi_debug_files[i];
2102
2103 node->asus = asus;
2104 dent = debugfs_create_file(node->name, S_IFREG | S_IRUGO,
2105 asus->debug.root, node,
2106 &asus_wmi_debugfs_io_ops);
2107 if (!dent) {
2108 pr_err("failed to create debug file: %s\n", node->name);
2109 goto error_debugfs;
2110 }
2111 }
2112
2113 return 0;
2114
2115 error_debugfs:
2116 asus_wmi_debugfs_exit(asus);
2117 return -ENOMEM;
2118 }
2119
2120 static int asus_wmi_fan_init(struct asus_wmi *asus)
2121 {
2122 int status;
2123
2124 asus->asus_hwmon_pwm = -1;
2125 asus->asus_hwmon_num_fans = -1;
2126 asus->asus_hwmon_fan_manual_mode = false;
2127
2128 status = asus_hwmon_get_fan_number(asus, &asus->asus_hwmon_num_fans);
2129 if (status) {
2130 asus->asus_hwmon_num_fans = 0;
2131 pr_warn("Could not determine number of fans: %d\n", status);
2132 return -ENXIO;
2133 }
2134
2135 pr_info("Number of fans: %d\n", asus->asus_hwmon_num_fans);
2136 return 0;
2137 }
2138
2139 /*
2140 * WMI Driver
2141 */
2142 static int asus_wmi_add(struct platform_device *pdev)
2143 {
2144 struct platform_driver *pdrv = to_platform_driver(pdev->dev.driver);
2145 struct asus_wmi_driver *wdrv = to_asus_wmi_driver(pdrv);
2146 struct asus_wmi *asus;
2147 const char *chassis_type;
2148 acpi_status status;
2149 int err;
2150 u32 result;
2151
2152 asus = kzalloc(sizeof(struct asus_wmi), GFP_KERNEL);
2153 if (!asus)
2154 return -ENOMEM;
2155
2156 asus->driver = wdrv;
2157 asus->platform_device = pdev;
2158 wdrv->platform_device = pdev;
2159 platform_set_drvdata(asus->platform_device, asus);
2160
2161 if (wdrv->detect_quirks)
2162 wdrv->detect_quirks(asus->driver);
2163
2164 err = asus_wmi_platform_init(asus);
2165 if (err)
2166 goto fail_platform;
2167
2168 err = asus_wmi_input_init(asus);
2169 if (err)
2170 goto fail_input;
2171
2172 err = asus_wmi_fan_init(asus); /* probably no problems on error */
2173 asus_hwmon_fan_set_auto(asus);
2174
2175 err = asus_wmi_hwmon_init(asus);
2176 if (err)
2177 goto fail_hwmon;
2178
2179 err = asus_wmi_led_init(asus);
2180 if (err)
2181 goto fail_leds;
2182
2183 asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_WLAN, &result);
2184 if (result & (ASUS_WMI_DSTS_PRESENCE_BIT | ASUS_WMI_DSTS_USER_BIT))
2185 asus->driver->wlan_ctrl_by_user = 1;
2186
2187 if (!(asus->driver->wlan_ctrl_by_user && ashs_present())) {
2188 err = asus_wmi_rfkill_init(asus);
2189 if (err)
2190 goto fail_rfkill;
2191 }
2192
2193 if (asus->driver->quirks->wmi_force_als_set)
2194 asus_wmi_set_als();
2195
2196 /* Some Asus desktop boards export an acpi-video backlight interface,
2197 stop this from showing up */
2198 chassis_type = dmi_get_system_info(DMI_CHASSIS_TYPE);
2199 if (chassis_type && !strcmp(chassis_type, "3"))
2200 acpi_video_set_dmi_backlight_type(acpi_backlight_vendor);
2201
2202 if (asus->driver->quirks->wmi_backlight_power)
2203 acpi_video_set_dmi_backlight_type(acpi_backlight_vendor);
2204
2205 if (asus->driver->quirks->wmi_backlight_native)
2206 acpi_video_set_dmi_backlight_type(acpi_backlight_native);
2207
2208 if (asus->driver->quirks->xusb2pr)
2209 asus_wmi_set_xusb2pr(asus);
2210
2211 if (acpi_video_get_backlight_type() == acpi_backlight_vendor) {
2212 err = asus_wmi_backlight_init(asus);
2213 if (err && err != -ENODEV)
2214 goto fail_backlight;
2215 }
2216
2217 status = wmi_install_notify_handler(asus->driver->event_guid,
2218 asus_wmi_notify, asus);
2219 if (ACPI_FAILURE(status)) {
2220 pr_err("Unable to register notify handler - %d\n", status);
2221 err = -ENODEV;
2222 goto fail_wmi_handler;
2223 }
2224
2225 err = asus_wmi_debugfs_init(asus);
2226 if (err)
2227 goto fail_debugfs;
2228
2229 return 0;
2230
2231 fail_debugfs:
2232 wmi_remove_notify_handler(asus->driver->event_guid);
2233 fail_wmi_handler:
2234 asus_wmi_backlight_exit(asus);
2235 fail_backlight:
2236 asus_wmi_rfkill_exit(asus);
2237 fail_rfkill:
2238 asus_wmi_led_exit(asus);
2239 fail_leds:
2240 fail_hwmon:
2241 asus_wmi_input_exit(asus);
2242 fail_input:
2243 asus_wmi_platform_exit(asus);
2244 fail_platform:
2245 kfree(asus);
2246 return err;
2247 }
2248
2249 static int asus_wmi_remove(struct platform_device *device)
2250 {
2251 struct asus_wmi *asus;
2252
2253 asus = platform_get_drvdata(device);
2254 wmi_remove_notify_handler(asus->driver->event_guid);
2255 asus_wmi_backlight_exit(asus);
2256 asus_wmi_input_exit(asus);
2257 asus_wmi_led_exit(asus);
2258 asus_wmi_rfkill_exit(asus);
2259 asus_wmi_debugfs_exit(asus);
2260 asus_wmi_platform_exit(asus);
2261 asus_hwmon_fan_set_auto(asus);
2262
2263 kfree(asus);
2264 return 0;
2265 }
2266
2267 /*
2268 * Platform driver - hibernate/resume callbacks
2269 */
2270 static int asus_hotk_thaw(struct device *device)
2271 {
2272 struct asus_wmi *asus = dev_get_drvdata(device);
2273
2274 if (asus->wlan.rfkill) {
2275 bool wlan;
2276
2277 /*
2278 * Work around bios bug - acpi _PTS turns off the wireless led
2279 * during suspend. Normally it restores it on resume, but
2280 * we should kick it ourselves in case hibernation is aborted.
2281 */
2282 wlan = asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WLAN);
2283 asus_wmi_set_devstate(ASUS_WMI_DEVID_WLAN, wlan, NULL);
2284 }
2285
2286 return 0;
2287 }
2288
2289 static int asus_hotk_resume(struct device *device)
2290 {
2291 struct asus_wmi *asus = dev_get_drvdata(device);
2292
2293 if (!IS_ERR_OR_NULL(asus->kbd_led.dev))
2294 queue_work(asus->led_workqueue, &asus->kbd_led_work);
2295
2296 return 0;
2297 }
2298
2299 static int asus_hotk_restore(struct device *device)
2300 {
2301 struct asus_wmi *asus = dev_get_drvdata(device);
2302 int bl;
2303
2304 /* Refresh both wlan rfkill state and pci hotplug */
2305 if (asus->wlan.rfkill)
2306 asus_rfkill_hotplug(asus);
2307
2308 if (asus->bluetooth.rfkill) {
2309 bl = !asus_wmi_get_devstate_simple(asus,
2310 ASUS_WMI_DEVID_BLUETOOTH);
2311 rfkill_set_sw_state(asus->bluetooth.rfkill, bl);
2312 }
2313 if (asus->wimax.rfkill) {
2314 bl = !asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WIMAX);
2315 rfkill_set_sw_state(asus->wimax.rfkill, bl);
2316 }
2317 if (asus->wwan3g.rfkill) {
2318 bl = !asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WWAN3G);
2319 rfkill_set_sw_state(asus->wwan3g.rfkill, bl);
2320 }
2321 if (asus->gps.rfkill) {
2322 bl = !asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_GPS);
2323 rfkill_set_sw_state(asus->gps.rfkill, bl);
2324 }
2325 if (asus->uwb.rfkill) {
2326 bl = !asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_UWB);
2327 rfkill_set_sw_state(asus->uwb.rfkill, bl);
2328 }
2329 if (!IS_ERR_OR_NULL(asus->kbd_led.dev))
2330 queue_work(asus->led_workqueue, &asus->kbd_led_work);
2331
2332 return 0;
2333 }
2334
2335 static const struct dev_pm_ops asus_pm_ops = {
2336 .thaw = asus_hotk_thaw,
2337 .restore = asus_hotk_restore,
2338 .resume = asus_hotk_resume,
2339 };
2340
2341 static int asus_wmi_probe(struct platform_device *pdev)
2342 {
2343 struct platform_driver *pdrv = to_platform_driver(pdev->dev.driver);
2344 struct asus_wmi_driver *wdrv = to_asus_wmi_driver(pdrv);
2345 int ret;
2346
2347 if (!wmi_has_guid(ASUS_WMI_MGMT_GUID)) {
2348 pr_warn("Management GUID not found\n");
2349 return -ENODEV;
2350 }
2351
2352 if (wdrv->event_guid && !wmi_has_guid(wdrv->event_guid)) {
2353 pr_warn("Event GUID not found\n");
2354 return -ENODEV;
2355 }
2356
2357 if (wdrv->probe) {
2358 ret = wdrv->probe(pdev);
2359 if (ret)
2360 return ret;
2361 }
2362
2363 return asus_wmi_add(pdev);
2364 }
2365
2366 static bool used;
2367
2368 int __init_or_module asus_wmi_register_driver(struct asus_wmi_driver *driver)
2369 {
2370 struct platform_driver *platform_driver;
2371 struct platform_device *platform_device;
2372
2373 if (used)
2374 return -EBUSY;
2375
2376 platform_driver = &driver->platform_driver;
2377 platform_driver->remove = asus_wmi_remove;
2378 platform_driver->driver.owner = driver->owner;
2379 platform_driver->driver.name = driver->name;
2380 platform_driver->driver.pm = &asus_pm_ops;
2381
2382 platform_device = platform_create_bundle(platform_driver,
2383 asus_wmi_probe,
2384 NULL, 0, NULL, 0);
2385 if (IS_ERR(platform_device))
2386 return PTR_ERR(platform_device);
2387
2388 used = true;
2389 return 0;
2390 }
2391 EXPORT_SYMBOL_GPL(asus_wmi_register_driver);
2392
2393 void asus_wmi_unregister_driver(struct asus_wmi_driver *driver)
2394 {
2395 platform_device_unregister(driver->platform_device);
2396 platform_driver_unregister(&driver->platform_driver);
2397 used = false;
2398 }
2399 EXPORT_SYMBOL_GPL(asus_wmi_unregister_driver);
2400
2401 static int __init asus_wmi_init(void)
2402 {
2403 if (!wmi_has_guid(ASUS_WMI_MGMT_GUID)) {
2404 pr_info("Asus Management GUID not found\n");
2405 return -ENODEV;
2406 }
2407
2408 pr_info("ASUS WMI generic driver loaded\n");
2409 return 0;
2410 }
2411
2412 static void __exit asus_wmi_exit(void)
2413 {
2414 pr_info("ASUS WMI generic driver unloaded\n");
2415 }
2416
2417 module_init(asus_wmi_init);
2418 module_exit(asus_wmi_exit);
Linux with added FPC-III support