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