?  search:
summary | log | graphiclog1 | graphiclog2 | commit | commitdiff | tree | refs | edit | fork
blame | history | raw | HEAD
Linux 4.19.133
[linux/fpc-iii.git] / drivers / platform / x86 / asus-wmi.c
blob339b753ba447fdd8b2d4bac7ba3cd9e9f39cf138
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 ctrl_param = 0x80 | (asus->kbd_led_wk & 0x7F);
467 asus_wmi_set_devstate(ASUS_WMI_DEVID_KBD_BACKLIGHT, ctrl_param, NULL);
468 led_classdev_notify_brightness_hw_changed(&asus->kbd_led, asus->kbd_led_wk);
469 }
470
471 static int kbd_led_read(struct asus_wmi *asus, int *level, int *env)
472 {
473 int retval;
474
475 /*
476 * bits 0-2: level
477 * bit 7: light on/off
478 * bit 8-10: environment (0: dark, 1: normal, 2: light)
479 * bit 17: status unknown
480 */
481 retval = asus_wmi_get_devstate_bits(asus, ASUS_WMI_DEVID_KBD_BACKLIGHT,
482 0xFFFF);
483
484 /* Unknown status is considered as off */
485 if (retval == 0x8000)
486 retval = 0;
487
488 if (retval >= 0) {
489 if (level)
490 *level = retval & 0x7F;
491 if (env)
492 *env = (retval >> 8) & 0x7F;
493 retval = 0;
494 }
495
496 return retval;
497 }
498
499 static void do_kbd_led_set(struct led_classdev *led_cdev, int value)
500 {
501 struct asus_wmi *asus;
502 int max_level;
503
504 asus = container_of(led_cdev, struct asus_wmi, kbd_led);
505 max_level = asus->kbd_led.max_brightness;
506
507 if (value > max_level)
508 value = max_level;
509 else if (value < 0)
510 value = 0;
511
512 asus->kbd_led_wk = value;
513 queue_work(asus->led_workqueue, &asus->kbd_led_work);
514 }
515
516 static void kbd_led_set(struct led_classdev *led_cdev,
517 enum led_brightness value)
518 {
519 do_kbd_led_set(led_cdev, value);
520 }
521
522 static enum led_brightness kbd_led_get(struct led_classdev *led_cdev)
523 {
524 struct asus_wmi *asus;
525 int retval, value;
526
527 asus = container_of(led_cdev, struct asus_wmi, kbd_led);
528
529 retval = kbd_led_read(asus, &value, NULL);
530
531 if (retval < 0)
532 return retval;
533
534 return value;
535 }
536
537 static int wlan_led_unknown_state(struct asus_wmi *asus)
538 {
539 u32 result;
540
541 asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_WIRELESS_LED, &result);
542
543 return result & ASUS_WMI_DSTS_UNKNOWN_BIT;
544 }
545
546 static int wlan_led_presence(struct asus_wmi *asus)
547 {
548 u32 result;
549
550 asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_WIRELESS_LED, &result);
551
552 return result & ASUS_WMI_DSTS_PRESENCE_BIT;
553 }
554
555 static void wlan_led_update(struct work_struct *work)
556 {
557 int ctrl_param;
558 struct asus_wmi *asus;
559
560 asus = container_of(work, struct asus_wmi, wlan_led_work);
561
562 ctrl_param = asus->wlan_led_wk;
563 asus_wmi_set_devstate(ASUS_WMI_DEVID_WIRELESS_LED, ctrl_param, NULL);
564 }
565
566 static void wlan_led_set(struct led_classdev *led_cdev,
567 enum led_brightness value)
568 {
569 struct asus_wmi *asus;
570
571 asus = container_of(led_cdev, struct asus_wmi, wlan_led);
572
573 asus->wlan_led_wk = !!value;
574 queue_work(asus->led_workqueue, &asus->wlan_led_work);
575 }
576
577 static enum led_brightness wlan_led_get(struct led_classdev *led_cdev)
578 {
579 struct asus_wmi *asus;
580 u32 result;
581
582 asus = container_of(led_cdev, struct asus_wmi, wlan_led);
583 asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_WIRELESS_LED, &result);
584
585 return result & ASUS_WMI_DSTS_BRIGHTNESS_MASK;
586 }
587
588 static void lightbar_led_update(struct work_struct *work)
589 {
590 struct asus_wmi *asus;
591 int ctrl_param;
592
593 asus = container_of(work, struct asus_wmi, lightbar_led_work);
594
595 ctrl_param = asus->lightbar_led_wk;
596 asus_wmi_set_devstate(ASUS_WMI_DEVID_LIGHTBAR, ctrl_param, NULL);
597 }
598
599 static void lightbar_led_set(struct led_classdev *led_cdev,
600 enum led_brightness value)
601 {
602 struct asus_wmi *asus;
603
604 asus = container_of(led_cdev, struct asus_wmi, lightbar_led);
605
606 asus->lightbar_led_wk = !!value;
607 queue_work(asus->led_workqueue, &asus->lightbar_led_work);
608 }
609
610 static enum led_brightness lightbar_led_get(struct led_classdev *led_cdev)
611 {
612 struct asus_wmi *asus;
613 u32 result;
614
615 asus = container_of(led_cdev, struct asus_wmi, lightbar_led);
616 asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_LIGHTBAR, &result);
617
618 return result & ASUS_WMI_DSTS_LIGHTBAR_MASK;
619 }
620
621 static int lightbar_led_presence(struct asus_wmi *asus)
622 {
623 u32 result;
624
625 asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_LIGHTBAR, &result);
626
627 return result & ASUS_WMI_DSTS_PRESENCE_BIT;
628 }
629
630 static void asus_wmi_led_exit(struct asus_wmi *asus)
631 {
632 if (!IS_ERR_OR_NULL(asus->kbd_led.dev))
633 led_classdev_unregister(&asus->kbd_led);
634 if (!IS_ERR_OR_NULL(asus->tpd_led.dev))
635 led_classdev_unregister(&asus->tpd_led);
636 if (!IS_ERR_OR_NULL(asus->wlan_led.dev))
637 led_classdev_unregister(&asus->wlan_led);
638 if (!IS_ERR_OR_NULL(asus->lightbar_led.dev))
639 led_classdev_unregister(&asus->lightbar_led);
640 if (asus->led_workqueue)
641 destroy_workqueue(asus->led_workqueue);
642 }
643
644 static int asus_wmi_led_init(struct asus_wmi *asus)
645 {
646 int rv = 0, led_val;
647
648 asus->led_workqueue = create_singlethread_workqueue("led_workqueue");
649 if (!asus->led_workqueue)
650 return -ENOMEM;
651
652 if (read_tpd_led_state(asus) >= 0) {
653 INIT_WORK(&asus->tpd_led_work, tpd_led_update);
654
655 asus->tpd_led.name = "asus::touchpad";
656 asus->tpd_led.brightness_set = tpd_led_set;
657 asus->tpd_led.brightness_get = tpd_led_get;
658 asus->tpd_led.max_brightness = 1;
659
660 rv = led_classdev_register(&asus->platform_device->dev,
661 &asus->tpd_led);
662 if (rv)
663 goto error;
664 }
665
666 led_val = kbd_led_read(asus, NULL, NULL);
667 if (led_val >= 0) {
668 INIT_WORK(&asus->kbd_led_work, kbd_led_update);
669
670 asus->kbd_led_wk = led_val;
671 asus->kbd_led.name = "asus::kbd_backlight";
672 asus->kbd_led.flags = LED_BRIGHT_HW_CHANGED;
673 asus->kbd_led.brightness_set = kbd_led_set;
674 asus->kbd_led.brightness_get = kbd_led_get;
675 asus->kbd_led.max_brightness = 3;
676
677 rv = led_classdev_register(&asus->platform_device->dev,
678 &asus->kbd_led);
679 if (rv)
680 goto error;
681 }
682
683 if (wlan_led_presence(asus) && (asus->driver->quirks->wapf > 0)) {
684 INIT_WORK(&asus->wlan_led_work, wlan_led_update);
685
686 asus->wlan_led.name = "asus::wlan";
687 asus->wlan_led.brightness_set = wlan_led_set;
688 if (!wlan_led_unknown_state(asus))
689 asus->wlan_led.brightness_get = wlan_led_get;
690 asus->wlan_led.flags = LED_CORE_SUSPENDRESUME;
691 asus->wlan_led.max_brightness = 1;
692 asus->wlan_led.default_trigger = "asus-wlan";
693
694 rv = led_classdev_register(&asus->platform_device->dev,
695 &asus->wlan_led);
696 if (rv)
697 goto error;
698 }
699
700 if (lightbar_led_presence(asus)) {
701 INIT_WORK(&asus->lightbar_led_work, lightbar_led_update);
702
703 asus->lightbar_led.name = "asus::lightbar";
704 asus->lightbar_led.brightness_set = lightbar_led_set;
705 asus->lightbar_led.brightness_get = lightbar_led_get;
706 asus->lightbar_led.max_brightness = 1;
707
708 rv = led_classdev_register(&asus->platform_device->dev,
709 &asus->lightbar_led);
710 }
711
712 error:
713 if (rv)
714 asus_wmi_led_exit(asus);
715
716 return rv;
717 }
718
719
720 /*
721 * PCI hotplug (for wlan rfkill)
722 */
723 static bool asus_wlan_rfkill_blocked(struct asus_wmi *asus)
724 {
725 int result = asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WLAN);
726
727 if (result < 0)
728 return false;
729 return !result;
730 }
731
732 static void asus_rfkill_hotplug(struct asus_wmi *asus)
733 {
734 struct pci_dev *dev;
735 struct pci_bus *bus;
736 bool blocked;
737 bool absent;
738 u32 l;
739
740 mutex_lock(&asus->wmi_lock);
741 blocked = asus_wlan_rfkill_blocked(asus);
742 mutex_unlock(&asus->wmi_lock);
743
744 mutex_lock(&asus->hotplug_lock);
745 pci_lock_rescan_remove();
746
747 if (asus->wlan.rfkill)
748 rfkill_set_sw_state(asus->wlan.rfkill, blocked);
749
750 if (asus->hotplug_slot) {
751 bus = pci_find_bus(0, 1);
752 if (!bus) {
753 pr_warn("Unable to find PCI bus 1?\n");
754 goto out_unlock;
755 }
756
757 if (pci_bus_read_config_dword(bus, 0, PCI_VENDOR_ID, &l)) {
758 pr_err("Unable to read PCI config space?\n");
759 goto out_unlock;
760 }
761 absent = (l == 0xffffffff);
762
763 if (blocked != absent) {
764 pr_warn("BIOS says wireless lan is %s, "
765 "but the pci device is %s\n",
766 blocked ? "blocked" : "unblocked",
767 absent ? "absent" : "present");
768 pr_warn("skipped wireless hotplug as probably "
769 "inappropriate for this model\n");
770 goto out_unlock;
771 }
772
773 if (!blocked) {
774 dev = pci_get_slot(bus, 0);
775 if (dev) {
776 /* Device already present */
777 pci_dev_put(dev);
778 goto out_unlock;
779 }
780 dev = pci_scan_single_device(bus, 0);
781 if (dev) {
782 pci_bus_assign_resources(bus);
783 pci_bus_add_device(dev);
784 }
785 } else {
786 dev = pci_get_slot(bus, 0);
787 if (dev) {
788 pci_stop_and_remove_bus_device(dev);
789 pci_dev_put(dev);
790 }
791 }
792 }
793
794 out_unlock:
795 pci_unlock_rescan_remove();
796 mutex_unlock(&asus->hotplug_lock);
797 }
798
799 static void asus_rfkill_notify(acpi_handle handle, u32 event, void *data)
800 {
801 struct asus_wmi *asus = data;
802
803 if (event != ACPI_NOTIFY_BUS_CHECK)
804 return;
805
806 /*
807 * We can't call directly asus_rfkill_hotplug because most
808 * of the time WMBC is still being executed and not reetrant.
809 * There is currently no way to tell ACPICA that we want this
810 * method to be serialized, we schedule a asus_rfkill_hotplug
811 * call later, in a safer context.
812 */
813 queue_work(asus->hotplug_workqueue, &asus->hotplug_work);
814 }
815
816 static int asus_register_rfkill_notifier(struct asus_wmi *asus, char *node)
817 {
818 acpi_status status;
819 acpi_handle handle;
820
821 status = acpi_get_handle(NULL, node, &handle);
822
823 if (ACPI_SUCCESS(status)) {
824 status = acpi_install_notify_handler(handle,
825 ACPI_SYSTEM_NOTIFY,
826 asus_rfkill_notify, asus);
827 if (ACPI_FAILURE(status))
828 pr_warn("Failed to register notify on %s\n", node);
829 } else
830 return -ENODEV;
831
832 return 0;
833 }
834
835 static void asus_unregister_rfkill_notifier(struct asus_wmi *asus, char *node)
836 {
837 acpi_status status = AE_OK;
838 acpi_handle handle;
839
840 status = acpi_get_handle(NULL, node, &handle);
841
842 if (ACPI_SUCCESS(status)) {
843 status = acpi_remove_notify_handler(handle,
844 ACPI_SYSTEM_NOTIFY,
845 asus_rfkill_notify);
846 if (ACPI_FAILURE(status))
847 pr_err("Error removing rfkill notify handler %s\n",
848 node);
849 }
850 }
851
852 static int asus_get_adapter_status(struct hotplug_slot *hotplug_slot,
853 u8 *value)
854 {
855 struct asus_wmi *asus = hotplug_slot->private;
856 int result = asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WLAN);
857
858 if (result < 0)
859 return result;
860
861 *value = !!result;
862 return 0;
863 }
864
865 static struct hotplug_slot_ops asus_hotplug_slot_ops = {
866 .owner = THIS_MODULE,
867 .get_adapter_status = asus_get_adapter_status,
868 .get_power_status = asus_get_adapter_status,
869 };
870
871 static void asus_hotplug_work(struct work_struct *work)
872 {
873 struct asus_wmi *asus;
874
875 asus = container_of(work, struct asus_wmi, hotplug_work);
876 asus_rfkill_hotplug(asus);
877 }
878
879 static int asus_setup_pci_hotplug(struct asus_wmi *asus)
880 {
881 int ret = -ENOMEM;
882 struct pci_bus *bus = pci_find_bus(0, 1);
883
884 if (!bus) {
885 pr_err("Unable to find wifi PCI bus\n");
886 return -ENODEV;
887 }
888
889 asus->hotplug_workqueue =
890 create_singlethread_workqueue("hotplug_workqueue");
891 if (!asus->hotplug_workqueue)
892 goto error_workqueue;
893
894 INIT_WORK(&asus->hotplug_work, asus_hotplug_work);
895
896 asus->hotplug_slot = kzalloc(sizeof(struct hotplug_slot), GFP_KERNEL);
897 if (!asus->hotplug_slot)
898 goto error_slot;
899
900 asus->hotplug_slot->info = kzalloc(sizeof(struct hotplug_slot_info),
901 GFP_KERNEL);
902 if (!asus->hotplug_slot->info)
903 goto error_info;
904
905 asus->hotplug_slot->private = asus;
906 asus->hotplug_slot->ops = &asus_hotplug_slot_ops;
907 asus_get_adapter_status(asus->hotplug_slot,
908 &asus->hotplug_slot->info->adapter_status);
909
910 ret = pci_hp_register(asus->hotplug_slot, bus, 0, "asus-wifi");
911 if (ret) {
912 pr_err("Unable to register hotplug slot - %d\n", ret);
913 goto error_register;
914 }
915
916 return 0;
917
918 error_register:
919 kfree(asus->hotplug_slot->info);
920 error_info:
921 kfree(asus->hotplug_slot);
922 asus->hotplug_slot = NULL;
923 error_slot:
924 destroy_workqueue(asus->hotplug_workqueue);
925 error_workqueue:
926 return ret;
927 }
928
929 /*
930 * Rfkill devices
931 */
932 static int asus_rfkill_set(void *data, bool blocked)
933 {
934 struct asus_rfkill *priv = data;
935 u32 ctrl_param = !blocked;
936 u32 dev_id = priv->dev_id;
937
938 /*
939 * If the user bit is set, BIOS can't set and record the wlan status,
940 * it will report the value read from id ASUS_WMI_DEVID_WLAN_LED
941 * while we query the wlan status through WMI(ASUS_WMI_DEVID_WLAN).
942 * So, we have to record wlan status in id ASUS_WMI_DEVID_WLAN_LED
943 * while setting the wlan status through WMI.
944 * This is also the behavior that windows app will do.
945 */
946 if ((dev_id == ASUS_WMI_DEVID_WLAN) &&
947 priv->asus->driver->wlan_ctrl_by_user)
948 dev_id = ASUS_WMI_DEVID_WLAN_LED;
949
950 return asus_wmi_set_devstate(dev_id, ctrl_param, NULL);
951 }
952
953 static void asus_rfkill_query(struct rfkill *rfkill, void *data)
954 {
955 struct asus_rfkill *priv = data;
956 int result;
957
958 result = asus_wmi_get_devstate_simple(priv->asus, priv->dev_id);
959
960 if (result < 0)
961 return;
962
963 rfkill_set_sw_state(priv->rfkill, !result);
964 }
965
966 static int asus_rfkill_wlan_set(void *data, bool blocked)
967 {
968 struct asus_rfkill *priv = data;
969 struct asus_wmi *asus = priv->asus;
970 int ret;
971
972 /*
973 * This handler is enabled only if hotplug is enabled.
974 * In this case, the asus_wmi_set_devstate() will
975 * trigger a wmi notification and we need to wait
976 * this call to finish before being able to call
977 * any wmi method
978 */
979 mutex_lock(&asus->wmi_lock);
980 ret = asus_rfkill_set(data, blocked);
981 mutex_unlock(&asus->wmi_lock);
982 return ret;
983 }
984
985 static const struct rfkill_ops asus_rfkill_wlan_ops = {
986 .set_block = asus_rfkill_wlan_set,
987 .query = asus_rfkill_query,
988 };
989
990 static const struct rfkill_ops asus_rfkill_ops = {
991 .set_block = asus_rfkill_set,
992 .query = asus_rfkill_query,
993 };
994
995 static int asus_new_rfkill(struct asus_wmi *asus,
996 struct asus_rfkill *arfkill,
997 const char *name, enum rfkill_type type, int dev_id)
998 {
999 int result = asus_wmi_get_devstate_simple(asus, dev_id);
1000 struct rfkill **rfkill = &arfkill->rfkill;
1001
1002 if (result < 0)
1003 return result;
1004
1005 arfkill->dev_id = dev_id;
1006 arfkill->asus = asus;
1007
1008 if (dev_id == ASUS_WMI_DEVID_WLAN &&
1009 asus->driver->quirks->hotplug_wireless)
1010 *rfkill = rfkill_alloc(name, &asus->platform_device->dev, type,
1011 &asus_rfkill_wlan_ops, arfkill);
1012 else
1013 *rfkill = rfkill_alloc(name, &asus->platform_device->dev, type,
1014 &asus_rfkill_ops, arfkill);
1015
1016 if (!*rfkill)
1017 return -EINVAL;
1018
1019 if ((dev_id == ASUS_WMI_DEVID_WLAN) &&
1020 (asus->driver->quirks->wapf > 0))
1021 rfkill_set_led_trigger_name(*rfkill, "asus-wlan");
1022
1023 rfkill_init_sw_state(*rfkill, !result);
1024 result = rfkill_register(*rfkill);
1025 if (result) {
1026 rfkill_destroy(*rfkill);
1027 *rfkill = NULL;
1028 return result;
1029 }
1030 return 0;
1031 }
1032
1033 static void asus_wmi_rfkill_exit(struct asus_wmi *asus)
1034 {
1035 if (asus->driver->wlan_ctrl_by_user && ashs_present())
1036 return;
1037
1038 asus_unregister_rfkill_notifier(asus, "\\_SB.PCI0.P0P5");
1039 asus_unregister_rfkill_notifier(asus, "\\_SB.PCI0.P0P6");
1040 asus_unregister_rfkill_notifier(asus, "\\_SB.PCI0.P0P7");
1041 if (asus->wlan.rfkill) {
1042 rfkill_unregister(asus->wlan.rfkill);
1043 rfkill_destroy(asus->wlan.rfkill);
1044 asus->wlan.rfkill = NULL;
1045 }
1046 /*
1047 * Refresh pci hotplug in case the rfkill state was changed after
1048 * asus_unregister_rfkill_notifier()
1049 */
1050 asus_rfkill_hotplug(asus);
1051 if (asus->hotplug_slot) {
1052 pci_hp_deregister(asus->hotplug_slot);
1053 kfree(asus->hotplug_slot->info);
1054 kfree(asus->hotplug_slot);
1055 }
1056 if (asus->hotplug_workqueue)
1057 destroy_workqueue(asus->hotplug_workqueue);
1058
1059 if (asus->bluetooth.rfkill) {
1060 rfkill_unregister(asus->bluetooth.rfkill);
1061 rfkill_destroy(asus->bluetooth.rfkill);
1062 asus->bluetooth.rfkill = NULL;
1063 }
1064 if (asus->wimax.rfkill) {
1065 rfkill_unregister(asus->wimax.rfkill);
1066 rfkill_destroy(asus->wimax.rfkill);
1067 asus->wimax.rfkill = NULL;
1068 }
1069 if (asus->wwan3g.rfkill) {
1070 rfkill_unregister(asus->wwan3g.rfkill);
1071 rfkill_destroy(asus->wwan3g.rfkill);
1072 asus->wwan3g.rfkill = NULL;
1073 }
1074 if (asus->gps.rfkill) {
1075 rfkill_unregister(asus->gps.rfkill);
1076 rfkill_destroy(asus->gps.rfkill);
1077 asus->gps.rfkill = NULL;
1078 }
1079 if (asus->uwb.rfkill) {
1080 rfkill_unregister(asus->uwb.rfkill);
1081 rfkill_destroy(asus->uwb.rfkill);
1082 asus->uwb.rfkill = NULL;
1083 }
1084 }
1085
1086 static int asus_wmi_rfkill_init(struct asus_wmi *asus)
1087 {
1088 int result = 0;
1089
1090 mutex_init(&asus->hotplug_lock);
1091 mutex_init(&asus->wmi_lock);
1092
1093 result = asus_new_rfkill(asus, &asus->wlan, "asus-wlan",
1094 RFKILL_TYPE_WLAN, ASUS_WMI_DEVID_WLAN);
1095
1096 if (result && result != -ENODEV)
1097 goto exit;
1098
1099 result = asus_new_rfkill(asus, &asus->bluetooth,
1100 "asus-bluetooth", RFKILL_TYPE_BLUETOOTH,
1101 ASUS_WMI_DEVID_BLUETOOTH);
1102
1103 if (result && result != -ENODEV)
1104 goto exit;
1105
1106 result = asus_new_rfkill(asus, &asus->wimax, "asus-wimax",
1107 RFKILL_TYPE_WIMAX, ASUS_WMI_DEVID_WIMAX);
1108
1109 if (result && result != -ENODEV)
1110 goto exit;
1111
1112 result = asus_new_rfkill(asus, &asus->wwan3g, "asus-wwan3g",
1113 RFKILL_TYPE_WWAN, ASUS_WMI_DEVID_WWAN3G);
1114
1115 if (result && result != -ENODEV)
1116 goto exit;
1117
1118 result = asus_new_rfkill(asus, &asus->gps, "asus-gps",
1119 RFKILL_TYPE_GPS, ASUS_WMI_DEVID_GPS);
1120
1121 if (result && result != -ENODEV)
1122 goto exit;
1123
1124 result = asus_new_rfkill(asus, &asus->uwb, "asus-uwb",
1125 RFKILL_TYPE_UWB, ASUS_WMI_DEVID_UWB);
1126
1127 if (result && result != -ENODEV)
1128 goto exit;
1129
1130 if (!asus->driver->quirks->hotplug_wireless)
1131 goto exit;
1132
1133 result = asus_setup_pci_hotplug(asus);
1134 /*
1135 * If we get -EBUSY then something else is handling the PCI hotplug -
1136 * don't fail in this case
1137 */
1138 if (result == -EBUSY)
1139 result = 0;
1140
1141 asus_register_rfkill_notifier(asus, "\\_SB.PCI0.P0P5");
1142 asus_register_rfkill_notifier(asus, "\\_SB.PCI0.P0P6");
1143 asus_register_rfkill_notifier(asus, "\\_SB.PCI0.P0P7");
1144 /*
1145 * Refresh pci hotplug in case the rfkill state was changed during
1146 * setup.
1147 */
1148 asus_rfkill_hotplug(asus);
1149
1150 exit:
1151 if (result && result != -ENODEV)
1152 asus_wmi_rfkill_exit(asus);
1153
1154 if (result == -ENODEV)
1155 result = 0;
1156
1157 return result;
1158 }
1159
1160 static void asus_wmi_set_xusb2pr(struct asus_wmi *asus)
1161 {
1162 struct pci_dev *xhci_pdev;
1163 u32 orig_ports_available;
1164 u32 ports_available = asus->driver->quirks->xusb2pr;
1165
1166 xhci_pdev = pci_get_device(PCI_VENDOR_ID_INTEL,
1167 PCI_DEVICE_ID_INTEL_LYNXPOINT_LP_XHCI,
1168 NULL);
1169
1170 if (!xhci_pdev)
1171 return;
1172
1173 pci_read_config_dword(xhci_pdev, USB_INTEL_XUSB2PR,
1174 &orig_ports_available);
1175
1176 pci_write_config_dword(xhci_pdev, USB_INTEL_XUSB2PR,
1177 cpu_to_le32(ports_available));
1178
1179 pr_info("set USB_INTEL_XUSB2PR old: 0x%04x, new: 0x%04x\n",
1180 orig_ports_available, ports_available);
1181 }
1182
1183 /*
1184 * Some devices dont support or have borcken get_als method
1185 * but still support set method.
1186 */
1187 static void asus_wmi_set_als(void)
1188 {
1189 asus_wmi_set_devstate(ASUS_WMI_DEVID_ALS_ENABLE, 1, NULL);
1190 }
1191
1192 /*
1193 * Hwmon device
1194 */
1195 static int asus_hwmon_agfn_fan_speed_read(struct asus_wmi *asus, int fan,
1196 int *speed)
1197 {
1198 struct fan_args args = {
1199 .agfn.len = sizeof(args),
1200 .agfn.mfun = ASUS_FAN_MFUN,
1201 .agfn.sfun = ASUS_FAN_SFUN_READ,
1202 .fan = fan,
1203 .speed = 0,
1204 };
1205 struct acpi_buffer input = { (acpi_size) sizeof(args), &args };
1206 int status;
1207
1208 if (fan != 1)
1209 return -EINVAL;
1210
1211 status = asus_wmi_evaluate_method_agfn(input);
1212
1213 if (status || args.agfn.err)
1214 return -ENXIO;
1215
1216 if (speed)
1217 *speed = args.speed;
1218
1219 return 0;
1220 }
1221
1222 static int asus_hwmon_agfn_fan_speed_write(struct asus_wmi *asus, int fan,
1223 int *speed)
1224 {
1225 struct fan_args args = {
1226 .agfn.len = sizeof(args),
1227 .agfn.mfun = ASUS_FAN_MFUN,
1228 .agfn.sfun = ASUS_FAN_SFUN_WRITE,
1229 .fan = fan,
1230 .speed = speed ? *speed : 0,
1231 };
1232 struct acpi_buffer input = { (acpi_size) sizeof(args), &args };
1233 int status;
1234
1235 /* 1: for setting 1st fan's speed 0: setting auto mode */
1236 if (fan != 1 && fan != 0)
1237 return -EINVAL;
1238
1239 status = asus_wmi_evaluate_method_agfn(input);
1240
1241 if (status || args.agfn.err)
1242 return -ENXIO;
1243
1244 if (speed && fan == 1)
1245 asus->asus_hwmon_pwm = *speed;
1246
1247 return 0;
1248 }
1249
1250 /*
1251 * Check if we can read the speed of one fan. If true we assume we can also
1252 * control it.
1253 */
1254 static int asus_hwmon_get_fan_number(struct asus_wmi *asus, int *num_fans)
1255 {
1256 int status;
1257 int speed = 0;
1258
1259 *num_fans = 0;
1260
1261 status = asus_hwmon_agfn_fan_speed_read(asus, 1, &speed);
1262 if (!status)
1263 *num_fans = 1;
1264
1265 return 0;
1266 }
1267
1268 static int asus_hwmon_fan_set_auto(struct asus_wmi *asus)
1269 {
1270 int status;
1271
1272 status = asus_hwmon_agfn_fan_speed_write(asus, 0, NULL);
1273 if (status)
1274 return -ENXIO;
1275
1276 asus->asus_hwmon_fan_manual_mode = false;
1277
1278 return 0;
1279 }
1280
1281 static int asus_hwmon_fan_rpm_show(struct device *dev, int fan)
1282 {
1283 struct asus_wmi *asus = dev_get_drvdata(dev);
1284 int value;
1285 int ret;
1286
1287 /* no speed readable on manual mode */
1288 if (asus->asus_hwmon_fan_manual_mode)
1289 return -ENXIO;
1290
1291 ret = asus_hwmon_agfn_fan_speed_read(asus, fan+1, &value);
1292 if (ret) {
1293 pr_warn("reading fan speed failed: %d\n", ret);
1294 return -ENXIO;
1295 }
1296
1297 return value;
1298 }
1299
1300 static void asus_hwmon_pwm_show(struct asus_wmi *asus, int fan, int *value)
1301 {
1302 int err;
1303
1304 if (asus->asus_hwmon_pwm >= 0) {
1305 *value = asus->asus_hwmon_pwm;
1306 return;
1307 }
1308
1309 err = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_FAN_CTRL, value);
1310 if (err < 0)
1311 return;
1312
1313 *value &= 0xFF;
1314
1315 if (*value == 1) /* Low Speed */
1316 *value = 85;
1317 else if (*value == 2)
1318 *value = 170;
1319 else if (*value == 3)
1320 *value = 255;
1321 else if (*value) {
1322 pr_err("Unknown fan speed %#x\n", *value);
1323 *value = -1;
1324 }
1325 }
1326
1327 static ssize_t pwm1_show(struct device *dev,
1328 struct device_attribute *attr,
1329 char *buf)
1330 {
1331 struct asus_wmi *asus = dev_get_drvdata(dev);
1332 int value;
1333
1334 asus_hwmon_pwm_show(asus, 0, &value);
1335
1336 return sprintf(buf, "%d\n", value);
1337 }
1338
1339 static ssize_t pwm1_store(struct device *dev,
1340 struct device_attribute *attr,
1341 const char *buf, size_t count) {
1342 struct asus_wmi *asus = dev_get_drvdata(dev);
1343 int value;
1344 int state;
1345 int ret;
1346
1347 ret = kstrtouint(buf, 10, &value);
1348
1349 if (ret)
1350 return ret;
1351
1352 value = clamp(value, 0, 255);
1353
1354 state = asus_hwmon_agfn_fan_speed_write(asus, 1, &value);
1355 if (state)
1356 pr_warn("Setting fan speed failed: %d\n", state);
1357 else
1358 asus->asus_hwmon_fan_manual_mode = true;
1359
1360 return count;
1361 }
1362
1363 static ssize_t fan1_input_show(struct device *dev,
1364 struct device_attribute *attr,
1365 char *buf)
1366 {
1367 int value = asus_hwmon_fan_rpm_show(dev, 0);
1368
1369 return sprintf(buf, "%d\n", value < 0 ? -1 : value*100);
1370
1371 }
1372
1373 static ssize_t pwm1_enable_show(struct device *dev,
1374 struct device_attribute *attr,
1375 char *buf)
1376 {
1377 struct asus_wmi *asus = dev_get_drvdata(dev);
1378
1379 if (asus->asus_hwmon_fan_manual_mode)
1380 return sprintf(buf, "%d\n", ASUS_FAN_CTRL_MANUAL);
1381
1382 return sprintf(buf, "%d\n", ASUS_FAN_CTRL_AUTO);
1383 }
1384
1385 static ssize_t pwm1_enable_store(struct device *dev,
1386 struct device_attribute *attr,
1387 const char *buf, size_t count)
1388 {
1389 struct asus_wmi *asus = dev_get_drvdata(dev);
1390 int status = 0;
1391 int state;
1392 int ret;
1393
1394 ret = kstrtouint(buf, 10, &state);
1395
1396 if (ret)
1397 return ret;
1398
1399 if (state == ASUS_FAN_CTRL_MANUAL)
1400 asus->asus_hwmon_fan_manual_mode = true;
1401 else
1402 status = asus_hwmon_fan_set_auto(asus);
1403
1404 if (status)
1405 return status;
1406
1407 return count;
1408 }
1409
1410 static ssize_t fan1_label_show(struct device *dev,
1411 struct device_attribute *attr,
1412 char *buf)
1413 {
1414 return sprintf(buf, "%s\n", ASUS_FAN_DESC);
1415 }
1416
1417 static ssize_t asus_hwmon_temp1(struct device *dev,
1418 struct device_attribute *attr,
1419 char *buf)
1420 {
1421 struct asus_wmi *asus = dev_get_drvdata(dev);
1422 u32 value;
1423 int err;
1424
1425 err = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_THERMAL_CTRL, &value);
1426
1427 if (err < 0)
1428 return err;
1429
1430 value = DECI_KELVIN_TO_CELSIUS((value & 0xFFFF)) * 1000;
1431
1432 return sprintf(buf, "%d\n", value);
1433 }
1434
1435 /* Fan1 */
1436 static DEVICE_ATTR_RW(pwm1);
1437 static DEVICE_ATTR_RW(pwm1_enable);
1438 static DEVICE_ATTR_RO(fan1_input);
1439 static DEVICE_ATTR_RO(fan1_label);
1440
1441 /* Temperature */
1442 static DEVICE_ATTR(temp1_input, S_IRUGO, asus_hwmon_temp1, NULL);
1443
1444 static struct attribute *hwmon_attributes[] = {
1445 &dev_attr_pwm1.attr,
1446 &dev_attr_pwm1_enable.attr,
1447 &dev_attr_fan1_input.attr,
1448 &dev_attr_fan1_label.attr,
1449
1450 &dev_attr_temp1_input.attr,
1451 NULL
1452 };
1453
1454 static umode_t asus_hwmon_sysfs_is_visible(struct kobject *kobj,
1455 struct attribute *attr, int idx)
1456 {
1457 struct device *dev = container_of(kobj, struct device, kobj);
1458 struct platform_device *pdev = to_platform_device(dev->parent);
1459 struct asus_wmi *asus = platform_get_drvdata(pdev);
1460 int dev_id = -1;
1461 int fan_attr = -1;
1462 u32 value = ASUS_WMI_UNSUPPORTED_METHOD;
1463 bool ok = true;
1464
1465 if (attr == &dev_attr_pwm1.attr)
1466 dev_id = ASUS_WMI_DEVID_FAN_CTRL;
1467 else if (attr == &dev_attr_temp1_input.attr)
1468 dev_id = ASUS_WMI_DEVID_THERMAL_CTRL;
1469
1470
1471 if (attr == &dev_attr_fan1_input.attr
1472 || attr == &dev_attr_fan1_label.attr
1473 || attr == &dev_attr_pwm1.attr
1474 || attr == &dev_attr_pwm1_enable.attr) {
1475 fan_attr = 1;
1476 }
1477
1478 if (dev_id != -1) {
1479 int err = asus_wmi_get_devstate(asus, dev_id, &value);
1480
1481 if (err < 0 && fan_attr == -1)
1482 return 0; /* can't return negative here */
1483 }
1484
1485 if (dev_id == ASUS_WMI_DEVID_FAN_CTRL) {
1486 /*
1487 * We need to find a better way, probably using sfun,
1488 * bits or spec ...
1489 * Currently we disable it if:
1490 * - ASUS_WMI_UNSUPPORTED_METHOD is returned
1491 * - reverved bits are non-zero
1492 * - sfun and presence bit are not set
1493 */
1494 if (value == ASUS_WMI_UNSUPPORTED_METHOD || value & 0xFFF80000
1495 || (!asus->sfun && !(value & ASUS_WMI_DSTS_PRESENCE_BIT)))
1496 ok = false;
1497 else
1498 ok = fan_attr <= asus->asus_hwmon_num_fans;
1499 } else if (dev_id == ASUS_WMI_DEVID_THERMAL_CTRL) {
1500 /* If value is zero, something is clearly wrong */
1501 if (!value)
1502 ok = false;
1503 } else if (fan_attr <= asus->asus_hwmon_num_fans && fan_attr != -1) {
1504 ok = true;
1505 } else {
1506 ok = false;
1507 }
1508
1509 return ok ? attr->mode : 0;
1510 }
1511
1512 static const struct attribute_group hwmon_attribute_group = {
1513 .is_visible = asus_hwmon_sysfs_is_visible,
1514 .attrs = hwmon_attributes
1515 };
1516 __ATTRIBUTE_GROUPS(hwmon_attribute);
1517
1518 static int asus_wmi_hwmon_init(struct asus_wmi *asus)
1519 {
1520 struct device *hwmon;
1521
1522 hwmon = hwmon_device_register_with_groups(&asus->platform_device->dev,
1523 "asus", asus,
1524 hwmon_attribute_groups);
1525 if (IS_ERR(hwmon)) {
1526 pr_err("Could not register asus hwmon device\n");
1527 return PTR_ERR(hwmon);
1528 }
1529 return 0;
1530 }
1531
1532 /*
1533 * Backlight
1534 */
1535 static int read_backlight_power(struct asus_wmi *asus)
1536 {
1537 int ret;
1538 if (asus->driver->quirks->store_backlight_power)
1539 ret = !asus->driver->panel_power;
1540 else
1541 ret = asus_wmi_get_devstate_simple(asus,
1542 ASUS_WMI_DEVID_BACKLIGHT);
1543
1544 if (ret < 0)
1545 return ret;
1546
1547 return ret ? FB_BLANK_UNBLANK : FB_BLANK_POWERDOWN;
1548 }
1549
1550 static int read_brightness_max(struct asus_wmi *asus)
1551 {
1552 u32 retval;
1553 int err;
1554
1555 err = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_BRIGHTNESS, &retval);
1556
1557 if (err < 0)
1558 return err;
1559
1560 retval = retval & ASUS_WMI_DSTS_MAX_BRIGTH_MASK;
1561 retval >>= 8;
1562
1563 if (!retval)
1564 return -ENODEV;
1565
1566 return retval;
1567 }
1568
1569 static int read_brightness(struct backlight_device *bd)
1570 {
1571 struct asus_wmi *asus = bl_get_data(bd);
1572 u32 retval;
1573 int err;
1574
1575 err = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_BRIGHTNESS, &retval);
1576
1577 if (err < 0)
1578 return err;
1579
1580 return retval & ASUS_WMI_DSTS_BRIGHTNESS_MASK;
1581 }
1582
1583 static u32 get_scalar_command(struct backlight_device *bd)
1584 {
1585 struct asus_wmi *asus = bl_get_data(bd);
1586 u32 ctrl_param = 0;
1587
1588 if ((asus->driver->brightness < bd->props.brightness) ||
1589 bd->props.brightness == bd->props.max_brightness)
1590 ctrl_param = 0x00008001;
1591 else if ((asus->driver->brightness > bd->props.brightness) ||
1592 bd->props.brightness == 0)
1593 ctrl_param = 0x00008000;
1594
1595 asus->driver->brightness = bd->props.brightness;
1596
1597 return ctrl_param;
1598 }
1599
1600 static int update_bl_status(struct backlight_device *bd)
1601 {
1602 struct asus_wmi *asus = bl_get_data(bd);
1603 u32 ctrl_param;
1604 int power, err = 0;
1605
1606 power = read_backlight_power(asus);
1607 if (power != -ENODEV && bd->props.power != power) {
1608 ctrl_param = !!(bd->props.power == FB_BLANK_UNBLANK);
1609 err = asus_wmi_set_devstate(ASUS_WMI_DEVID_BACKLIGHT,
1610 ctrl_param, NULL);
1611 if (asus->driver->quirks->store_backlight_power)
1612 asus->driver->panel_power = bd->props.power;
1613
1614 /* When using scalar brightness, updating the brightness
1615 * will mess with the backlight power */
1616 if (asus->driver->quirks->scalar_panel_brightness)
1617 return err;
1618 }
1619
1620 if (asus->driver->quirks->scalar_panel_brightness)
1621 ctrl_param = get_scalar_command(bd);
1622 else
1623 ctrl_param = bd->props.brightness;
1624
1625 err = asus_wmi_set_devstate(ASUS_WMI_DEVID_BRIGHTNESS,
1626 ctrl_param, NULL);
1627
1628 return err;
1629 }
1630
1631 static const struct backlight_ops asus_wmi_bl_ops = {
1632 .get_brightness = read_brightness,
1633 .update_status = update_bl_status,
1634 };
1635
1636 static int asus_wmi_backlight_notify(struct asus_wmi *asus, int code)
1637 {
1638 struct backlight_device *bd = asus->backlight_device;
1639 int old = bd->props.brightness;
1640 int new = old;
1641
1642 if (code >= NOTIFY_BRNUP_MIN && code <= NOTIFY_BRNUP_MAX)
1643 new = code - NOTIFY_BRNUP_MIN + 1;
1644 else if (code >= NOTIFY_BRNDOWN_MIN && code <= NOTIFY_BRNDOWN_MAX)
1645 new = code - NOTIFY_BRNDOWN_MIN;
1646
1647 bd->props.brightness = new;
1648 backlight_update_status(bd);
1649 backlight_force_update(bd, BACKLIGHT_UPDATE_HOTKEY);
1650
1651 return old;
1652 }
1653
1654 static int asus_wmi_backlight_init(struct asus_wmi *asus)
1655 {
1656 struct backlight_device *bd;
1657 struct backlight_properties props;
1658 int max;
1659 int power;
1660
1661 max = read_brightness_max(asus);
1662 if (max < 0)
1663 return max;
1664
1665 power = read_backlight_power(asus);
1666
1667 if (power == -ENODEV)
1668 power = FB_BLANK_UNBLANK;
1669 else if (power < 0)
1670 return power;
1671
1672 memset(&props, 0, sizeof(struct backlight_properties));
1673 props.type = BACKLIGHT_PLATFORM;
1674 props.max_brightness = max;
1675 bd = backlight_device_register(asus->driver->name,
1676 &asus->platform_device->dev, asus,
1677 &asus_wmi_bl_ops, &props);
1678 if (IS_ERR(bd)) {
1679 pr_err("Could not register backlight device\n");
1680 return PTR_ERR(bd);
1681 }
1682
1683 asus->backlight_device = bd;
1684
1685 if (asus->driver->quirks->store_backlight_power)
1686 asus->driver->panel_power = power;
1687
1688 bd->props.brightness = read_brightness(bd);
1689 bd->props.power = power;
1690 backlight_update_status(bd);
1691
1692 asus->driver->brightness = bd->props.brightness;
1693
1694 return 0;
1695 }
1696
1697 static void asus_wmi_backlight_exit(struct asus_wmi *asus)
1698 {
1699 backlight_device_unregister(asus->backlight_device);
1700
1701 asus->backlight_device = NULL;
1702 }
1703
1704 static int is_display_toggle(int code)
1705 {
1706 /* display toggle keys */
1707 if ((code >= 0x61 && code <= 0x67) ||
1708 (code >= 0x8c && code <= 0x93) ||
1709 (code >= 0xa0 && code <= 0xa7) ||
1710 (code >= 0xd0 && code <= 0xd5))
1711 return 1;
1712
1713 return 0;
1714 }
1715
1716 static void asus_wmi_notify(u32 value, void *context)
1717 {
1718 struct asus_wmi *asus = context;
1719 struct acpi_buffer response = { ACPI_ALLOCATE_BUFFER, NULL };
1720 union acpi_object *obj;
1721 acpi_status status;
1722 int code;
1723 int orig_code;
1724 unsigned int key_value = 1;
1725 bool autorelease = 1;
1726
1727 status = wmi_get_event_data(value, &response);
1728 if (status != AE_OK) {
1729 pr_err("bad event status 0x%x\n", status);
1730 return;
1731 }
1732
1733 obj = (union acpi_object *)response.pointer;
1734
1735 if (!obj || obj->type != ACPI_TYPE_INTEGER)
1736 goto exit;
1737
1738 code = obj->integer.value;
1739 orig_code = code;
1740
1741 if (asus->driver->key_filter) {
1742 asus->driver->key_filter(asus->driver, &code, &key_value,
1743 &autorelease);
1744 if (code == ASUS_WMI_KEY_IGNORE)
1745 goto exit;
1746 }
1747
1748 if (code >= NOTIFY_BRNUP_MIN && code <= NOTIFY_BRNUP_MAX)
1749 code = ASUS_WMI_BRN_UP;
1750 else if (code >= NOTIFY_BRNDOWN_MIN &&
1751 code <= NOTIFY_BRNDOWN_MAX)
1752 code = ASUS_WMI_BRN_DOWN;
1753
1754 if (code == ASUS_WMI_BRN_DOWN || code == ASUS_WMI_BRN_UP) {
1755 if (acpi_video_get_backlight_type() == acpi_backlight_vendor) {
1756 asus_wmi_backlight_notify(asus, orig_code);
1757 goto exit;
1758 }
1759 }
1760
1761 if (code == NOTIFY_KBD_BRTUP) {
1762 do_kbd_led_set(&asus->kbd_led, asus->kbd_led_wk + 1);
1763 goto exit;
1764 }
1765 if (code == NOTIFY_KBD_BRTDWN) {
1766 do_kbd_led_set(&asus->kbd_led, asus->kbd_led_wk - 1);
1767 goto exit;
1768 }
1769 if (code == NOTIFY_KBD_BRTTOGGLE) {
1770 if (asus->kbd_led_wk == asus->kbd_led.max_brightness)
1771 do_kbd_led_set(&asus->kbd_led, 0);
1772 else
1773 do_kbd_led_set(&asus->kbd_led, asus->kbd_led_wk + 1);
1774 goto exit;
1775 }
1776
1777 if (is_display_toggle(code) &&
1778 asus->driver->quirks->no_display_toggle)
1779 goto exit;
1780
1781 if (!sparse_keymap_report_event(asus->inputdev, code,
1782 key_value, autorelease))
1783 pr_info("Unknown key %x pressed\n", code);
1784
1785 exit:
1786 kfree(obj);
1787 }
1788
1789 /*
1790 * Sys helpers
1791 */
1792 static int parse_arg(const char *buf, unsigned long count, int *val)
1793 {
1794 if (!count)
1795 return 0;
1796 if (sscanf(buf, "%i", val) != 1)
1797 return -EINVAL;
1798 return count;
1799 }
1800
1801 static ssize_t store_sys_wmi(struct asus_wmi *asus, int devid,
1802 const char *buf, size_t count)
1803 {
1804 u32 retval;
1805 int rv, err, value;
1806
1807 value = asus_wmi_get_devstate_simple(asus, devid);
1808 if (value < 0)
1809 return value;
1810
1811 rv = parse_arg(buf, count, &value);
1812 err = asus_wmi_set_devstate(devid, value, &retval);
1813
1814 if (err < 0)
1815 return err;
1816
1817 return rv;
1818 }
1819
1820 static ssize_t show_sys_wmi(struct asus_wmi *asus, int devid, char *buf)
1821 {
1822 int value = asus_wmi_get_devstate_simple(asus, devid);
1823
1824 if (value < 0)
1825 return value;
1826
1827 return sprintf(buf, "%d\n", value);
1828 }
1829
1830 #define ASUS_WMI_CREATE_DEVICE_ATTR(_name, _mode, _cm) \
1831 static ssize_t show_##_name(struct device *dev, \
1832 struct device_attribute *attr, \
1833 char *buf) \
1834 { \
1835 struct asus_wmi *asus = dev_get_drvdata(dev); \
1836 \
1837 return show_sys_wmi(asus, _cm, buf); \
1838 } \
1839 static ssize_t store_##_name(struct device *dev, \
1840 struct device_attribute *attr, \
1841 const char *buf, size_t count) \
1842 { \
1843 struct asus_wmi *asus = dev_get_drvdata(dev); \
1844 \
1845 return store_sys_wmi(asus, _cm, buf, count); \
1846 } \
1847 static struct device_attribute dev_attr_##_name = { \
1848 .attr = { \
1849 .name = __stringify(_name), \
1850 .mode = _mode }, \
1851 .show = show_##_name, \
1852 .store = store_##_name, \
1853 }
1854
1855 ASUS_WMI_CREATE_DEVICE_ATTR(touchpad, 0644, ASUS_WMI_DEVID_TOUCHPAD);
1856 ASUS_WMI_CREATE_DEVICE_ATTR(camera, 0644, ASUS_WMI_DEVID_CAMERA);
1857 ASUS_WMI_CREATE_DEVICE_ATTR(cardr, 0644, ASUS_WMI_DEVID_CARDREADER);
1858 ASUS_WMI_CREATE_DEVICE_ATTR(lid_resume, 0644, ASUS_WMI_DEVID_LID_RESUME);
1859 ASUS_WMI_CREATE_DEVICE_ATTR(als_enable, 0644, ASUS_WMI_DEVID_ALS_ENABLE);
1860
1861 static ssize_t cpufv_store(struct device *dev, struct device_attribute *attr,
1862 const char *buf, size_t count)
1863 {
1864 int value, rv;
1865
1866 if (!count || sscanf(buf, "%i", &value) != 1)
1867 return -EINVAL;
1868 if (value < 0 || value > 2)
1869 return -EINVAL;
1870
1871 rv = asus_wmi_evaluate_method(ASUS_WMI_METHODID_CFVS, value, 0, NULL);
1872 if (rv < 0)
1873 return rv;
1874
1875 return count;
1876 }
1877
1878 static DEVICE_ATTR_WO(cpufv);
1879
1880 static struct attribute *platform_attributes[] = {
1881 &dev_attr_cpufv.attr,
1882 &dev_attr_camera.attr,
1883 &dev_attr_cardr.attr,
1884 &dev_attr_touchpad.attr,
1885 &dev_attr_lid_resume.attr,
1886 &dev_attr_als_enable.attr,
1887 NULL
1888 };
1889
1890 static umode_t asus_sysfs_is_visible(struct kobject *kobj,
1891 struct attribute *attr, int idx)
1892 {
1893 struct device *dev = container_of(kobj, struct device, kobj);
1894 struct asus_wmi *asus = dev_get_drvdata(dev);
1895 bool ok = true;
1896 int devid = -1;
1897
1898 if (attr == &dev_attr_camera.attr)
1899 devid = ASUS_WMI_DEVID_CAMERA;
1900 else if (attr == &dev_attr_cardr.attr)
1901 devid = ASUS_WMI_DEVID_CARDREADER;
1902 else if (attr == &dev_attr_touchpad.attr)
1903 devid = ASUS_WMI_DEVID_TOUCHPAD;
1904 else if (attr == &dev_attr_lid_resume.attr)
1905 devid = ASUS_WMI_DEVID_LID_RESUME;
1906 else if (attr == &dev_attr_als_enable.attr)
1907 devid = ASUS_WMI_DEVID_ALS_ENABLE;
1908
1909 if (devid != -1)
1910 ok = !(asus_wmi_get_devstate_simple(asus, devid) < 0);
1911
1912 return ok ? attr->mode : 0;
1913 }
1914
1915 static const struct attribute_group platform_attribute_group = {
1916 .is_visible = asus_sysfs_is_visible,
1917 .attrs = platform_attributes
1918 };
1919
1920 static void asus_wmi_sysfs_exit(struct platform_device *device)
1921 {
1922 sysfs_remove_group(&device->dev.kobj, &platform_attribute_group);
1923 }
1924
1925 static int asus_wmi_sysfs_init(struct platform_device *device)
1926 {
1927 return sysfs_create_group(&device->dev.kobj, &platform_attribute_group);
1928 }
1929
1930 /*
1931 * Platform device
1932 */
1933 static int asus_wmi_platform_init(struct asus_wmi *asus)
1934 {
1935 int rv;
1936
1937 /* INIT enable hotkeys on some models */
1938 if (!asus_wmi_evaluate_method(ASUS_WMI_METHODID_INIT, 0, 0, &rv))
1939 pr_info("Initialization: %#x\n", rv);
1940
1941 /* We don't know yet what to do with this version... */
1942 if (!asus_wmi_evaluate_method(ASUS_WMI_METHODID_SPEC, 0, 0x9, &rv)) {
1943 pr_info("BIOS WMI version: %d.%d\n", rv >> 16, rv & 0xFF);
1944 asus->spec = rv;
1945 }
1946
1947 /*
1948 * The SFUN method probably allows the original driver to get the list
1949 * of features supported by a given model. For now, 0x0100 or 0x0800
1950 * bit signifies that the laptop is equipped with a Wi-Fi MiniPCI card.
1951 * The significance of others is yet to be found.
1952 */
1953 if (!asus_wmi_evaluate_method(ASUS_WMI_METHODID_SFUN, 0, 0, &rv)) {
1954 pr_info("SFUN value: %#x\n", rv);
1955 asus->sfun = rv;
1956 }
1957
1958 /*
1959 * Eee PC and Notebooks seems to have different method_id for DSTS,
1960 * but it may also be related to the BIOS's SPEC.
1961 * Note, on most Eeepc, there is no way to check if a method exist
1962 * or note, while on notebooks, they returns 0xFFFFFFFE on failure,
1963 * but once again, SPEC may probably be used for that kind of things.
1964 */
1965 if (!asus_wmi_evaluate_method(ASUS_WMI_METHODID_DSTS, 0, 0, NULL))
1966 asus->dsts_id = ASUS_WMI_METHODID_DSTS;
1967 else
1968 asus->dsts_id = ASUS_WMI_METHODID_DSTS2;
1969
1970 /* CWAP allow to define the behavior of the Fn+F2 key,
1971 * this method doesn't seems to be present on Eee PCs */
1972 if (asus->driver->quirks->wapf >= 0)
1973 asus_wmi_set_devstate(ASUS_WMI_DEVID_CWAP,
1974 asus->driver->quirks->wapf, NULL);
1975
1976 return asus_wmi_sysfs_init(asus->platform_device);
1977 }
1978
1979 static void asus_wmi_platform_exit(struct asus_wmi *asus)
1980 {
1981 asus_wmi_sysfs_exit(asus->platform_device);
1982 }
1983
1984 /*
1985 * debugfs
1986 */
1987 struct asus_wmi_debugfs_node {
1988 struct asus_wmi *asus;
1989 char *name;
1990 int (*show) (struct seq_file *m, void *data);
1991 };
1992
1993 static int show_dsts(struct seq_file *m, void *data)
1994 {
1995 struct asus_wmi *asus = m->private;
1996 int err;
1997 u32 retval = -1;
1998
1999 err = asus_wmi_get_devstate(asus, asus->debug.dev_id, &retval);
2000
2001 if (err < 0)
2002 return err;
2003
2004 seq_printf(m, "DSTS(%#x) = %#x\n", asus->debug.dev_id, retval);
2005
2006 return 0;
2007 }
2008
2009 static int show_devs(struct seq_file *m, void *data)
2010 {
2011 struct asus_wmi *asus = m->private;
2012 int err;
2013 u32 retval = -1;
2014
2015 err = asus_wmi_set_devstate(asus->debug.dev_id, asus->debug.ctrl_param,
2016 &retval);
2017
2018 if (err < 0)
2019 return err;
2020
2021 seq_printf(m, "DEVS(%#x, %#x) = %#x\n", asus->debug.dev_id,
2022 asus->debug.ctrl_param, retval);
2023
2024 return 0;
2025 }
2026
2027 static int show_call(struct seq_file *m, void *data)
2028 {
2029 struct asus_wmi *asus = m->private;
2030 struct bios_args args = {
2031 .arg0 = asus->debug.dev_id,
2032 .arg1 = asus->debug.ctrl_param,
2033 };
2034 struct acpi_buffer input = { (acpi_size) sizeof(args), &args };
2035 struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
2036 union acpi_object *obj;
2037 acpi_status status;
2038
2039 status = wmi_evaluate_method(ASUS_WMI_MGMT_GUID,
2040 0, asus->debug.method_id,
2041 &input, &output);
2042
2043 if (ACPI_FAILURE(status))
2044 return -EIO;
2045
2046 obj = (union acpi_object *)output.pointer;
2047 if (obj && obj->type == ACPI_TYPE_INTEGER)
2048 seq_printf(m, "%#x(%#x, %#x) = %#x\n", asus->debug.method_id,
2049 asus->debug.dev_id, asus->debug.ctrl_param,
2050 (u32) obj->integer.value);
2051 else
2052 seq_printf(m, "%#x(%#x, %#x) = t:%d\n", asus->debug.method_id,
2053 asus->debug.dev_id, asus->debug.ctrl_param,
2054 obj ? obj->type : -1);
2055
2056 kfree(obj);
2057
2058 return 0;
2059 }
2060
2061 static struct asus_wmi_debugfs_node asus_wmi_debug_files[] = {
2062 {NULL, "devs", show_devs},
2063 {NULL, "dsts", show_dsts},
2064 {NULL, "call", show_call},
2065 };
2066
2067 static int asus_wmi_debugfs_open(struct inode *inode, struct file *file)
2068 {
2069 struct asus_wmi_debugfs_node *node = inode->i_private;
2070
2071 return single_open(file, node->show, node->asus);
2072 }
2073
2074 static const struct file_operations asus_wmi_debugfs_io_ops = {
2075 .owner = THIS_MODULE,
2076 .open = asus_wmi_debugfs_open,
2077 .read = seq_read,
2078 .llseek = seq_lseek,
2079 .release = single_release,
2080 };
2081
2082 static void asus_wmi_debugfs_exit(struct asus_wmi *asus)
2083 {
2084 debugfs_remove_recursive(asus->debug.root);
2085 }
2086
2087 static int asus_wmi_debugfs_init(struct asus_wmi *asus)
2088 {
2089 struct dentry *dent;
2090 int i;
2091
2092 asus->debug.root = debugfs_create_dir(asus->driver->name, NULL);
2093 if (!asus->debug.root) {
2094 pr_err("failed to create debugfs directory\n");
2095 goto error_debugfs;
2096 }
2097
2098 dent = debugfs_create_x32("method_id", S_IRUGO | S_IWUSR,
2099 asus->debug.root, &asus->debug.method_id);
2100 if (!dent)
2101 goto error_debugfs;
2102
2103 dent = debugfs_create_x32("dev_id", S_IRUGO | S_IWUSR,
2104 asus->debug.root, &asus->debug.dev_id);
2105 if (!dent)
2106 goto error_debugfs;
2107
2108 dent = debugfs_create_x32("ctrl_param", S_IRUGO | S_IWUSR,
2109 asus->debug.root, &asus->debug.ctrl_param);
2110 if (!dent)
2111 goto error_debugfs;
2112
2113 for (i = 0; i < ARRAY_SIZE(asus_wmi_debug_files); i++) {
2114 struct asus_wmi_debugfs_node *node = &asus_wmi_debug_files[i];
2115
2116 node->asus = asus;
2117 dent = debugfs_create_file(node->name, S_IFREG | S_IRUGO,
2118 asus->debug.root, node,
2119 &asus_wmi_debugfs_io_ops);
2120 if (!dent) {
2121 pr_err("failed to create debug file: %s\n", node->name);
2122 goto error_debugfs;
2123 }
2124 }
2125
2126 return 0;
2127
2128 error_debugfs:
2129 asus_wmi_debugfs_exit(asus);
2130 return -ENOMEM;
2131 }
2132
2133 static int asus_wmi_fan_init(struct asus_wmi *asus)
2134 {
2135 int status;
2136
2137 asus->asus_hwmon_pwm = -1;
2138 asus->asus_hwmon_num_fans = -1;
2139 asus->asus_hwmon_fan_manual_mode = false;
2140
2141 status = asus_hwmon_get_fan_number(asus, &asus->asus_hwmon_num_fans);
2142 if (status) {
2143 asus->asus_hwmon_num_fans = 0;
2144 pr_warn("Could not determine number of fans: %d\n", status);
2145 return -ENXIO;
2146 }
2147
2148 pr_info("Number of fans: %d\n", asus->asus_hwmon_num_fans);
2149 return 0;
2150 }
2151
2152 /*
2153 * WMI Driver
2154 */
2155 static int asus_wmi_add(struct platform_device *pdev)
2156 {
2157 struct platform_driver *pdrv = to_platform_driver(pdev->dev.driver);
2158 struct asus_wmi_driver *wdrv = to_asus_wmi_driver(pdrv);
2159 struct asus_wmi *asus;
2160 const char *chassis_type;
2161 acpi_status status;
2162 int err;
2163 u32 result;
2164
2165 asus = kzalloc(sizeof(struct asus_wmi), GFP_KERNEL);
2166 if (!asus)
2167 return -ENOMEM;
2168
2169 asus->driver = wdrv;
2170 asus->platform_device = pdev;
2171 wdrv->platform_device = pdev;
2172 platform_set_drvdata(asus->platform_device, asus);
2173
2174 if (wdrv->detect_quirks)
2175 wdrv->detect_quirks(asus->driver);
2176
2177 err = asus_wmi_platform_init(asus);
2178 if (err)
2179 goto fail_platform;
2180
2181 err = asus_wmi_input_init(asus);
2182 if (err)
2183 goto fail_input;
2184
2185 err = asus_wmi_fan_init(asus); /* probably no problems on error */
2186 asus_hwmon_fan_set_auto(asus);
2187
2188 err = asus_wmi_hwmon_init(asus);
2189 if (err)
2190 goto fail_hwmon;
2191
2192 err = asus_wmi_led_init(asus);
2193 if (err)
2194 goto fail_leds;
2195
2196 asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_WLAN, &result);
2197 if (result & (ASUS_WMI_DSTS_PRESENCE_BIT | ASUS_WMI_DSTS_USER_BIT))
2198 asus->driver->wlan_ctrl_by_user = 1;
2199
2200 if (!(asus->driver->wlan_ctrl_by_user && ashs_present())) {
2201 err = asus_wmi_rfkill_init(asus);
2202 if (err)
2203 goto fail_rfkill;
2204 }
2205
2206 if (asus->driver->quirks->wmi_force_als_set)
2207 asus_wmi_set_als();
2208
2209 /* Some Asus desktop boards export an acpi-video backlight interface,
2210 stop this from showing up */
2211 chassis_type = dmi_get_system_info(DMI_CHASSIS_TYPE);
2212 if (chassis_type && !strcmp(chassis_type, "3"))
2213 acpi_video_set_dmi_backlight_type(acpi_backlight_vendor);
2214
2215 if (asus->driver->quirks->wmi_backlight_power)
2216 acpi_video_set_dmi_backlight_type(acpi_backlight_vendor);
2217
2218 if (asus->driver->quirks->wmi_backlight_native)
2219 acpi_video_set_dmi_backlight_type(acpi_backlight_native);
2220
2221 if (asus->driver->quirks->xusb2pr)
2222 asus_wmi_set_xusb2pr(asus);
2223
2224 if (acpi_video_get_backlight_type() == acpi_backlight_vendor) {
2225 err = asus_wmi_backlight_init(asus);
2226 if (err && err != -ENODEV)
2227 goto fail_backlight;
2228 } else if (asus->driver->quirks->wmi_backlight_set_devstate)
2229 err = asus_wmi_set_devstate(ASUS_WMI_DEVID_BACKLIGHT, 2, NULL);
2230
2231 status = wmi_install_notify_handler(asus->driver->event_guid,
2232 asus_wmi_notify, asus);
2233 if (ACPI_FAILURE(status)) {
2234 pr_err("Unable to register notify handler - %d\n", status);
2235 err = -ENODEV;
2236 goto fail_wmi_handler;
2237 }
2238
2239 err = asus_wmi_debugfs_init(asus);
2240 if (err)
2241 goto fail_debugfs;
2242
2243 return 0;
2244
2245 fail_debugfs:
2246 wmi_remove_notify_handler(asus->driver->event_guid);
2247 fail_wmi_handler:
2248 asus_wmi_backlight_exit(asus);
2249 fail_backlight:
2250 asus_wmi_rfkill_exit(asus);
2251 fail_rfkill:
2252 asus_wmi_led_exit(asus);
2253 fail_leds:
2254 fail_hwmon:
2255 asus_wmi_input_exit(asus);
2256 fail_input:
2257 asus_wmi_platform_exit(asus);
2258 fail_platform:
2259 kfree(asus);
2260 return err;
2261 }
2262
2263 static int asus_wmi_remove(struct platform_device *device)
2264 {
2265 struct asus_wmi *asus;
2266
2267 asus = platform_get_drvdata(device);
2268 wmi_remove_notify_handler(asus->driver->event_guid);
2269 asus_wmi_backlight_exit(asus);
2270 asus_wmi_input_exit(asus);
2271 asus_wmi_led_exit(asus);
2272 asus_wmi_rfkill_exit(asus);
2273 asus_wmi_debugfs_exit(asus);
2274 asus_wmi_platform_exit(asus);
2275 asus_hwmon_fan_set_auto(asus);
2276
2277 kfree(asus);
2278 return 0;
2279 }
2280
2281 /*
2282 * Platform driver - hibernate/resume callbacks
2283 */
2284 static int asus_hotk_thaw(struct device *device)
2285 {
2286 struct asus_wmi *asus = dev_get_drvdata(device);
2287
2288 if (asus->wlan.rfkill) {
2289 bool wlan;
2290
2291 /*
2292 * Work around bios bug - acpi _PTS turns off the wireless led
2293 * during suspend. Normally it restores it on resume, but
2294 * we should kick it ourselves in case hibernation is aborted.
2295 */
2296 wlan = asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WLAN);
2297 asus_wmi_set_devstate(ASUS_WMI_DEVID_WLAN, wlan, NULL);
2298 }
2299
2300 return 0;
2301 }
2302
2303 static int asus_hotk_resume(struct device *device)
2304 {
2305 struct asus_wmi *asus = dev_get_drvdata(device);
2306
2307 if (!IS_ERR_OR_NULL(asus->kbd_led.dev))
2308 queue_work(asus->led_workqueue, &asus->kbd_led_work);
2309
2310 return 0;
2311 }
2312
2313 static int asus_hotk_restore(struct device *device)
2314 {
2315 struct asus_wmi *asus = dev_get_drvdata(device);
2316 int bl;
2317
2318 /* Refresh both wlan rfkill state and pci hotplug */
2319 if (asus->wlan.rfkill)
2320 asus_rfkill_hotplug(asus);
2321
2322 if (asus->bluetooth.rfkill) {
2323 bl = !asus_wmi_get_devstate_simple(asus,
2324 ASUS_WMI_DEVID_BLUETOOTH);
2325 rfkill_set_sw_state(asus->bluetooth.rfkill, bl);
2326 }
2327 if (asus->wimax.rfkill) {
2328 bl = !asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WIMAX);
2329 rfkill_set_sw_state(asus->wimax.rfkill, bl);
2330 }
2331 if (asus->wwan3g.rfkill) {
2332 bl = !asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WWAN3G);
2333 rfkill_set_sw_state(asus->wwan3g.rfkill, bl);
2334 }
2335 if (asus->gps.rfkill) {
2336 bl = !asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_GPS);
2337 rfkill_set_sw_state(asus->gps.rfkill, bl);
2338 }
2339 if (asus->uwb.rfkill) {
2340 bl = !asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_UWB);
2341 rfkill_set_sw_state(asus->uwb.rfkill, bl);
2342 }
2343 if (!IS_ERR_OR_NULL(asus->kbd_led.dev))
2344 queue_work(asus->led_workqueue, &asus->kbd_led_work);
2345
2346 return 0;
2347 }
2348
2349 static const struct dev_pm_ops asus_pm_ops = {
2350 .thaw = asus_hotk_thaw,
2351 .restore = asus_hotk_restore,
2352 .resume = asus_hotk_resume,
2353 };
2354
2355 static int asus_wmi_probe(struct platform_device *pdev)
2356 {
2357 struct platform_driver *pdrv = to_platform_driver(pdev->dev.driver);
2358 struct asus_wmi_driver *wdrv = to_asus_wmi_driver(pdrv);
2359 int ret;
2360
2361 if (!wmi_has_guid(ASUS_WMI_MGMT_GUID)) {
2362 pr_warn("Management GUID not found\n");
2363 return -ENODEV;
2364 }
2365
2366 if (wdrv->event_guid && !wmi_has_guid(wdrv->event_guid)) {
2367 pr_warn("Event GUID not found\n");
2368 return -ENODEV;
2369 }
2370
2371 if (wdrv->probe) {
2372 ret = wdrv->probe(pdev);
2373 if (ret)
2374 return ret;
2375 }
2376
2377 return asus_wmi_add(pdev);
2378 }
2379
2380 static bool used;
2381
2382 int __init_or_module asus_wmi_register_driver(struct asus_wmi_driver *driver)
2383 {
2384 struct platform_driver *platform_driver;
2385 struct platform_device *platform_device;
2386
2387 if (used)
2388 return -EBUSY;
2389
2390 platform_driver = &driver->platform_driver;
2391 platform_driver->remove = asus_wmi_remove;
2392 platform_driver->driver.owner = driver->owner;
2393 platform_driver->driver.name = driver->name;
2394 platform_driver->driver.pm = &asus_pm_ops;
2395
2396 platform_device = platform_create_bundle(platform_driver,
2397 asus_wmi_probe,
2398 NULL, 0, NULL, 0);
2399 if (IS_ERR(platform_device))
2400 return PTR_ERR(platform_device);
2401
2402 used = true;
2403 return 0;
2404 }
2405 EXPORT_SYMBOL_GPL(asus_wmi_register_driver);
2406
2407 void asus_wmi_unregister_driver(struct asus_wmi_driver *driver)
2408 {
2409 platform_device_unregister(driver->platform_device);
2410 platform_driver_unregister(&driver->platform_driver);
2411 used = false;
2412 }
2413 EXPORT_SYMBOL_GPL(asus_wmi_unregister_driver);
2414
2415 static int __init asus_wmi_init(void)
2416 {
2417 if (!wmi_has_guid(ASUS_WMI_MGMT_GUID)) {
2418 pr_info("Asus Management GUID not found\n");
2419 return -ENODEV;
2420 }
2421
2422 pr_info("ASUS WMI generic driver loaded\n");
2423 return 0;
2424 }
2425
2426 static void __exit asus_wmi_exit(void)
2427 {
2428 pr_info("ASUS WMI generic driver unloaded\n");
2429 }
2430
2431 module_init(asus_wmi_init);
2432 module_exit(asus_wmi_exit);
Linux with added FPC-III support