1 /*
2 * Asus PC WMI hotkey driver
3 *
4 * Copyright(C) 2010 Intel Corporation.
5 * Copyright(C) 2010-2011 Corentin Chary <corentin.chary@gmail.com>
6 *
7 * Portions based on wistron_btns.c:
8 * Copyright (C) 2005 Miloslav Trmac <mitr@volny.cz>
9 * Copyright (C) 2005 Bernhard Rosenkraenzer <bero@arklinux.org>
10 * Copyright (C) 2005 Dmitry Torokhov <dtor@mail.ru>
11 *
12 * This program is free software; you can redistribute it and/or modify
13 * it under the terms of the GNU General Public License as published by
14 * the Free Software Foundation; either version 2 of the License, or
15 * (at your option) any later version.
16 *
17 * This program is distributed in the hope that it will be useful,
18 * but WITHOUT ANY WARRANTY; without even the implied warranty of
19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20 * GNU General Public License for more details.
21 *
22 * You should have received a copy of the GNU General Public License
23 * along with this program; if not, write to the Free Software
24 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
25 */
26
27 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
28
29 #include <linux/kernel.h>
30 #include <linux/module.h>
31 #include <linux/init.h>
32 #include <linux/types.h>
33 #include <linux/slab.h>
34 #include <linux/input.h>
35 #include <linux/input/sparse-keymap.h>
36 #include <linux/fb.h>
37 #include <linux/backlight.h>
38 #include <linux/leds.h>
39 #include <linux/rfkill.h>
40 #include <linux/pci.h>
41 #include <linux/pci_hotplug.h>
42 #include <linux/hwmon.h>
43 #include <linux/hwmon-sysfs.h>
44 #include <linux/debugfs.h>
45 #include <linux/seq_file.h>
46 #include <linux/platform_device.h>
47 #include <linux/thermal.h>
48 #include <linux/acpi.h>
49 #include <linux/dmi.h>
50 #include <acpi/video.h>
51
52 #include "asus-wmi.h"
53
54 MODULE_AUTHOR("Corentin Chary <corentin.chary@gmail.com>, "
55 "Yong Wang <yong.y.wang@intel.com>");
56 MODULE_DESCRIPTION("Asus Generic WMI Driver");
57 MODULE_LICENSE("GPL");
58
59 #define to_asus_wmi_driver(pdrv) \
60 (container_of((pdrv), struct asus_wmi_driver, platform_driver))
61
62 #define ASUS_WMI_MGMT_GUID "97845ED0-4E6D-11DE-8A39-0800200C9A66"
63
64 #define NOTIFY_BRNUP_MIN 0x11
65 #define NOTIFY_BRNUP_MAX 0x1f
66 #define NOTIFY_BRNDOWN_MIN 0x20
67 #define NOTIFY_BRNDOWN_MAX 0x2e
68 #define NOTIFY_KBD_BRTUP 0xc4
69 #define NOTIFY_KBD_BRTDWN 0xc5
70
71 /* WMI Methods */
72 #define ASUS_WMI_METHODID_SPEC 0x43455053 /* BIOS SPECification */
73 #define ASUS_WMI_METHODID_SFBD 0x44424653 /* Set First Boot Device */
74 #define ASUS_WMI_METHODID_GLCD 0x44434C47 /* Get LCD status */
75 #define ASUS_WMI_METHODID_GPID 0x44495047 /* Get Panel ID?? (Resol) */
76 #define ASUS_WMI_METHODID_QMOD 0x444F4D51 /* Quiet MODe */
77 #define ASUS_WMI_METHODID_SPLV 0x4C425053 /* Set Panel Light Value */
78 #define ASUS_WMI_METHODID_AGFN 0x4E464741 /* FaN? */
79 #define ASUS_WMI_METHODID_SFUN 0x4E554653 /* FUNCtionalities */
80 #define ASUS_WMI_METHODID_SDSP 0x50534453 /* Set DiSPlay output */
81 #define ASUS_WMI_METHODID_GDSP 0x50534447 /* Get DiSPlay output */
82 #define ASUS_WMI_METHODID_DEVP 0x50564544 /* DEVice Policy */
83 #define ASUS_WMI_METHODID_OSVR 0x5256534F /* OS VeRsion */
84 #define ASUS_WMI_METHODID_DSTS 0x53544344 /* Device STatuS */
85 #define ASUS_WMI_METHODID_DSTS2 0x53545344 /* Device STatuS #2*/
86 #define ASUS_WMI_METHODID_BSTS 0x53545342 /* Bios STatuS ? */
87 #define ASUS_WMI_METHODID_DEVS 0x53564544 /* DEVice Set */
88 #define ASUS_WMI_METHODID_CFVS 0x53564643 /* CPU Frequency Volt Set */
89 #define ASUS_WMI_METHODID_KBFT 0x5446424B /* KeyBoard FilTer */
90 #define ASUS_WMI_METHODID_INIT 0x54494E49 /* INITialize */
91 #define ASUS_WMI_METHODID_HKEY 0x59454B48 /* Hot KEY ?? */
92
93 #define ASUS_WMI_UNSUPPORTED_METHOD 0xFFFFFFFE
94
95 /* Wireless */
96 #define ASUS_WMI_DEVID_HW_SWITCH 0x00010001
97 #define ASUS_WMI_DEVID_WIRELESS_LED 0x00010002
98 #define ASUS_WMI_DEVID_CWAP 0x00010003
99 #define ASUS_WMI_DEVID_WLAN 0x00010011
100 #define ASUS_WMI_DEVID_WLAN_LED 0x00010012
101 #define ASUS_WMI_DEVID_BLUETOOTH 0x00010013
102 #define ASUS_WMI_DEVID_GPS 0x00010015
103 #define ASUS_WMI_DEVID_WIMAX 0x00010017
104 #define ASUS_WMI_DEVID_WWAN3G 0x00010019
105 #define ASUS_WMI_DEVID_UWB 0x00010021
106
107 /* Leds */
108 /* 0x000200XX and 0x000400XX */
109 #define ASUS_WMI_DEVID_LED1 0x00020011
110 #define ASUS_WMI_DEVID_LED2 0x00020012
111 #define ASUS_WMI_DEVID_LED3 0x00020013
112 #define ASUS_WMI_DEVID_LED4 0x00020014
113 #define ASUS_WMI_DEVID_LED5 0x00020015
114 #define ASUS_WMI_DEVID_LED6 0x00020016
115
116 /* Backlight and Brightness */
117 #define ASUS_WMI_DEVID_ALS_ENABLE 0x00050001 /* Ambient Light Sensor */
118 #define ASUS_WMI_DEVID_BACKLIGHT 0x00050011
119 #define ASUS_WMI_DEVID_BRIGHTNESS 0x00050012
120 #define ASUS_WMI_DEVID_KBD_BACKLIGHT 0x00050021
121 #define ASUS_WMI_DEVID_LIGHT_SENSOR 0x00050022 /* ?? */
122
123 /* Misc */
124 #define ASUS_WMI_DEVID_CAMERA 0x00060013
125
126 /* Storage */
127 #define ASUS_WMI_DEVID_CARDREADER 0x00080013
128
129 /* Input */
130 #define ASUS_WMI_DEVID_TOUCHPAD 0x00100011
131 #define ASUS_WMI_DEVID_TOUCHPAD_LED 0x00100012
132
133 /* Fan, Thermal */
134 #define ASUS_WMI_DEVID_THERMAL_CTRL 0x00110011
135 #define ASUS_WMI_DEVID_FAN_CTRL 0x00110012
136
137 /* Power */
138 #define ASUS_WMI_DEVID_PROCESSOR_STATE 0x00120012
139
140 /* Deep S3 / Resume on LID open */
141 #define ASUS_WMI_DEVID_LID_RESUME 0x00120031
142
143 /* DSTS masks */
144 #define ASUS_WMI_DSTS_STATUS_BIT 0x00000001
145 #define ASUS_WMI_DSTS_UNKNOWN_BIT 0x00000002
146 #define ASUS_WMI_DSTS_PRESENCE_BIT 0x00010000
147 #define ASUS_WMI_DSTS_USER_BIT 0x00020000
148 #define ASUS_WMI_DSTS_BIOS_BIT 0x00040000
149 #define ASUS_WMI_DSTS_BRIGHTNESS_MASK 0x000000FF
150 #define ASUS_WMI_DSTS_MAX_BRIGTH_MASK 0x0000FF00
151
152 #define ASUS_FAN_DESC "cpu_fan"
153 #define ASUS_FAN_MFUN 0x13
154 #define ASUS_FAN_SFUN_READ 0x06
155 #define ASUS_FAN_SFUN_WRITE 0x07
156 #define ASUS_FAN_CTRL_MANUAL 1
157 #define ASUS_FAN_CTRL_AUTO 2
158
159 #define USB_INTEL_XUSB2PR 0xD0
160 #define PCI_DEVICE_ID_INTEL_LYNXPOINT_LP_XHCI 0x9c31
161
162 static const char * const ashs_ids[] = { "ATK4001", "ATK4002", NULL };
163
ashs_present(void)164 static bool ashs_present(void)
165 {
166 int i = 0;
167 while (ashs_ids[i]) {
168 if (acpi_dev_found(ashs_ids[i++]))
169 return true;
170 }
171 return false;
172 }
173
174 struct bios_args {
175 u32 arg0;
176 u32 arg1;
177 } __packed;
178
179 /*
180 * Struct that's used for all methods called via AGFN. Naming is
181 * identically to the AML code.
182 */
183 struct agfn_args {
184 u16 mfun; /* probably "Multi-function" to be called */
185 u16 sfun; /* probably "Sub-function" to be called */
186 u16 len; /* size of the hole struct, including subfunction fields */
187 u8 stas; /* not used by now */
188 u8 err; /* zero on success */
189 } __packed;
190
191 /* struct used for calling fan read and write methods */
192 struct fan_args {
193 struct agfn_args agfn; /* common fields */
194 u8 fan; /* fan number: 0: set auto mode 1: 1st fan */
195 u32 speed; /* read: RPM/100 - write: 0-255 */
196 } __packed;
197
198 /*
199 * <platform>/ - debugfs root directory
200 * dev_id - current dev_id
201 * ctrl_param - current ctrl_param
202 * method_id - current method_id
203 * devs - call DEVS(dev_id, ctrl_param) and print result
204 * dsts - call DSTS(dev_id) and print result
205 * call - call method_id(dev_id, ctrl_param) and print result
206 */
207 struct asus_wmi_debug {
208 struct dentry *root;
209 u32 method_id;
210 u32 dev_id;
211 u32 ctrl_param;
212 };
213
214 struct asus_rfkill {
215 struct asus_wmi *asus;
216 struct rfkill *rfkill;
217 u32 dev_id;
218 };
219
220 struct asus_wmi {
221 int dsts_id;
222 int spec;
223 int sfun;
224
225 struct input_dev *inputdev;
226 struct backlight_device *backlight_device;
227 struct platform_device *platform_device;
228
229 struct led_classdev wlan_led;
230 int wlan_led_wk;
231 struct led_classdev tpd_led;
232 int tpd_led_wk;
233 struct led_classdev kbd_led;
234 int kbd_led_wk;
235 struct workqueue_struct *led_workqueue;
236 struct work_struct tpd_led_work;
237 struct work_struct kbd_led_work;
238 struct work_struct wlan_led_work;
239
240 struct asus_rfkill wlan;
241 struct asus_rfkill bluetooth;
242 struct asus_rfkill wimax;
243 struct asus_rfkill wwan3g;
244 struct asus_rfkill gps;
245 struct asus_rfkill uwb;
246
247 bool asus_hwmon_fan_manual_mode;
248 int asus_hwmon_num_fans;
249 int asus_hwmon_pwm;
250
251 struct hotplug_slot *hotplug_slot;
252 struct mutex hotplug_lock;
253 struct mutex wmi_lock;
254 struct workqueue_struct *hotplug_workqueue;
255 struct work_struct hotplug_work;
256
257 struct asus_wmi_debug debug;
258
259 struct asus_wmi_driver *driver;
260 };
261
asus_wmi_input_init(struct asus_wmi * asus)262 static int asus_wmi_input_init(struct asus_wmi *asus)
263 {
264 int err;
265
266 asus->inputdev = input_allocate_device();
267 if (!asus->inputdev)
268 return -ENOMEM;
269
270 asus->inputdev->name = asus->driver->input_name;
271 asus->inputdev->phys = asus->driver->input_phys;
272 asus->inputdev->id.bustype = BUS_HOST;
273 asus->inputdev->dev.parent = &asus->platform_device->dev;
274 set_bit(EV_REP, asus->inputdev->evbit);
275
276 err = sparse_keymap_setup(asus->inputdev, asus->driver->keymap, NULL);
277 if (err)
278 goto err_free_dev;
279
280 err = input_register_device(asus->inputdev);
281 if (err)
282 goto err_free_dev;
283
284 return 0;
285
286 err_free_dev:
287 input_free_device(asus->inputdev);
288 return err;
289 }
290
asus_wmi_input_exit(struct asus_wmi * asus)291 static void asus_wmi_input_exit(struct asus_wmi *asus)
292 {
293 if (asus->inputdev)
294 input_unregister_device(asus->inputdev);
295
296 asus->inputdev = NULL;
297 }
298
asus_wmi_evaluate_method(u32 method_id,u32 arg0,u32 arg1,u32 * retval)299 static int asus_wmi_evaluate_method(u32 method_id, u32 arg0, u32 arg1,
300 u32 *retval)
301 {
302 struct bios_args args = {
303 .arg0 = arg0,
304 .arg1 = arg1,
305 };
306 struct acpi_buffer input = { (acpi_size) sizeof(args), &args };
307 struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
308 acpi_status status;
309 union acpi_object *obj;
310 u32 tmp = 0;
311
312 status = wmi_evaluate_method(ASUS_WMI_MGMT_GUID, 0, method_id,
313 &input, &output);
314
315 if (ACPI_FAILURE(status))
316 goto exit;
317
318 obj = (union acpi_object *)output.pointer;
319 if (obj && obj->type == ACPI_TYPE_INTEGER)
320 tmp = (u32) obj->integer.value;
321
322 if (retval)
323 *retval = tmp;
324
325 kfree(obj);
326
327 exit:
328 if (ACPI_FAILURE(status))
329 return -EIO;
330
331 if (tmp == ASUS_WMI_UNSUPPORTED_METHOD)
332 return -ENODEV;
333
334 return 0;
335 }
336
asus_wmi_evaluate_method_agfn(const struct acpi_buffer args)337 static int asus_wmi_evaluate_method_agfn(const struct acpi_buffer args)
338 {
339 struct acpi_buffer input;
340 u64 phys_addr;
341 u32 retval;
342 u32 status = -1;
343
344 /*
345 * Copy to dma capable address otherwise memory corruption occurs as
346 * bios has to be able to access it.
347 */
348 input.pointer = kzalloc(args.length, GFP_DMA | GFP_KERNEL);
349 input.length = args.length;
350 if (!input.pointer)
351 return -ENOMEM;
352 phys_addr = virt_to_phys(input.pointer);
353 memcpy(input.pointer, args.pointer, args.length);
354
355 status = asus_wmi_evaluate_method(ASUS_WMI_METHODID_AGFN,
356 phys_addr, 0, &retval);
357 if (!status)
358 memcpy(args.pointer, input.pointer, args.length);
359
360 kfree(input.pointer);
361 if (status)
362 return -ENXIO;
363
364 return retval;
365 }
366
asus_wmi_get_devstate(struct asus_wmi * asus,u32 dev_id,u32 * retval)367 static int asus_wmi_get_devstate(struct asus_wmi *asus, u32 dev_id, u32 *retval)
368 {
369 return asus_wmi_evaluate_method(asus->dsts_id, dev_id, 0, retval);
370 }
371
asus_wmi_set_devstate(u32 dev_id,u32 ctrl_param,u32 * retval)372 static int asus_wmi_set_devstate(u32 dev_id, u32 ctrl_param,
373 u32 *retval)
374 {
375 return asus_wmi_evaluate_method(ASUS_WMI_METHODID_DEVS, dev_id,
376 ctrl_param, retval);
377 }
378
379 /* Helper for special devices with magic return codes */
asus_wmi_get_devstate_bits(struct asus_wmi * asus,u32 dev_id,u32 mask)380 static int asus_wmi_get_devstate_bits(struct asus_wmi *asus,
381 u32 dev_id, u32 mask)
382 {
383 u32 retval = 0;
384 int err;
385
386 err = asus_wmi_get_devstate(asus, dev_id, &retval);
387
388 if (err < 0)
389 return err;
390
391 if (!(retval & ASUS_WMI_DSTS_PRESENCE_BIT))
392 return -ENODEV;
393
394 if (mask == ASUS_WMI_DSTS_STATUS_BIT) {
395 if (retval & ASUS_WMI_DSTS_UNKNOWN_BIT)
396 return -ENODEV;
397 }
398
399 return retval & mask;
400 }
401
asus_wmi_get_devstate_simple(struct asus_wmi * asus,u32 dev_id)402 static int asus_wmi_get_devstate_simple(struct asus_wmi *asus, u32 dev_id)
403 {
404 return asus_wmi_get_devstate_bits(asus, dev_id,
405 ASUS_WMI_DSTS_STATUS_BIT);
406 }
407
408 /*
409 * LEDs
410 */
411 /*
412 * These functions actually update the LED's, and are called from a
413 * workqueue. By doing this as separate work rather than when the LED
414 * subsystem asks, we avoid messing with the Asus ACPI stuff during a
415 * potentially bad time, such as a timer interrupt.
416 */
tpd_led_update(struct work_struct * work)417 static void tpd_led_update(struct work_struct *work)
418 {
419 int ctrl_param;
420 struct asus_wmi *asus;
421
422 asus = container_of(work, struct asus_wmi, tpd_led_work);
423
424 ctrl_param = asus->tpd_led_wk;
425 asus_wmi_set_devstate(ASUS_WMI_DEVID_TOUCHPAD_LED, ctrl_param, NULL);
426 }
427
tpd_led_set(struct led_classdev * led_cdev,enum led_brightness value)428 static void tpd_led_set(struct led_classdev *led_cdev,
429 enum led_brightness value)
430 {
431 struct asus_wmi *asus;
432
433 asus = container_of(led_cdev, struct asus_wmi, tpd_led);
434
435 asus->tpd_led_wk = !!value;
436 queue_work(asus->led_workqueue, &asus->tpd_led_work);
437 }
438
read_tpd_led_state(struct asus_wmi * asus)439 static int read_tpd_led_state(struct asus_wmi *asus)
440 {
441 return asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_TOUCHPAD_LED);
442 }
443
tpd_led_get(struct led_classdev * led_cdev)444 static enum led_brightness tpd_led_get(struct led_classdev *led_cdev)
445 {
446 struct asus_wmi *asus;
447
448 asus = container_of(led_cdev, struct asus_wmi, tpd_led);
449
450 return read_tpd_led_state(asus);
451 }
452
kbd_led_update(struct work_struct * work)453 static void kbd_led_update(struct work_struct *work)
454 {
455 int ctrl_param = 0;
456 struct asus_wmi *asus;
457
458 asus = container_of(work, struct asus_wmi, kbd_led_work);
459
460 ctrl_param = 0x80 | (asus->kbd_led_wk & 0x7F);
461 asus_wmi_set_devstate(ASUS_WMI_DEVID_KBD_BACKLIGHT, ctrl_param, NULL);
462 }
463
kbd_led_read(struct asus_wmi * asus,int * level,int * env)464 static int kbd_led_read(struct asus_wmi *asus, int *level, int *env)
465 {
466 int retval;
467
468 /*
469 * bits 0-2: level
470 * bit 7: light on/off
471 * bit 8-10: environment (0: dark, 1: normal, 2: light)
472 * bit 17: status unknown
473 */
474 retval = asus_wmi_get_devstate_bits(asus, ASUS_WMI_DEVID_KBD_BACKLIGHT,
475 0xFFFF);
476
477 /* Unknown status is considered as off */
478 if (retval == 0x8000)
479 retval = 0;
480
481 if (retval >= 0) {
482 if (level)
483 *level = retval & 0x7F;
484 if (env)
485 *env = (retval >> 8) & 0x7F;
486 retval = 0;
487 }
488
489 return retval;
490 }
491
kbd_led_set(struct led_classdev * led_cdev,enum led_brightness value)492 static void kbd_led_set(struct led_classdev *led_cdev,
493 enum led_brightness value)
494 {
495 struct asus_wmi *asus;
496
497 asus = container_of(led_cdev, struct asus_wmi, kbd_led);
498
499 if (value > asus->kbd_led.max_brightness)
500 value = asus->kbd_led.max_brightness;
501 else if (value < 0)
502 value = 0;
503
504 asus->kbd_led_wk = value;
505 queue_work(asus->led_workqueue, &asus->kbd_led_work);
506 }
507
kbd_led_get(struct led_classdev * led_cdev)508 static enum led_brightness kbd_led_get(struct led_classdev *led_cdev)
509 {
510 struct asus_wmi *asus;
511 int retval, value;
512
513 asus = container_of(led_cdev, struct asus_wmi, kbd_led);
514
515 retval = kbd_led_read(asus, &value, NULL);
516
517 if (retval < 0)
518 return retval;
519
520 return value;
521 }
522
wlan_led_unknown_state(struct asus_wmi * asus)523 static int wlan_led_unknown_state(struct asus_wmi *asus)
524 {
525 u32 result;
526
527 asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_WIRELESS_LED, &result);
528
529 return result & ASUS_WMI_DSTS_UNKNOWN_BIT;
530 }
531
wlan_led_presence(struct asus_wmi * asus)532 static int wlan_led_presence(struct asus_wmi *asus)
533 {
534 u32 result;
535
536 asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_WIRELESS_LED, &result);
537
538 return result & ASUS_WMI_DSTS_PRESENCE_BIT;
539 }
540
wlan_led_update(struct work_struct * work)541 static void wlan_led_update(struct work_struct *work)
542 {
543 int ctrl_param;
544 struct asus_wmi *asus;
545
546 asus = container_of(work, struct asus_wmi, wlan_led_work);
547
548 ctrl_param = asus->wlan_led_wk;
549 asus_wmi_set_devstate(ASUS_WMI_DEVID_WIRELESS_LED, ctrl_param, NULL);
550 }
551
wlan_led_set(struct led_classdev * led_cdev,enum led_brightness value)552 static void wlan_led_set(struct led_classdev *led_cdev,
553 enum led_brightness value)
554 {
555 struct asus_wmi *asus;
556
557 asus = container_of(led_cdev, struct asus_wmi, wlan_led);
558
559 asus->wlan_led_wk = !!value;
560 queue_work(asus->led_workqueue, &asus->wlan_led_work);
561 }
562
wlan_led_get(struct led_classdev * led_cdev)563 static enum led_brightness wlan_led_get(struct led_classdev *led_cdev)
564 {
565 struct asus_wmi *asus;
566 u32 result;
567
568 asus = container_of(led_cdev, struct asus_wmi, wlan_led);
569 asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_WIRELESS_LED, &result);
570
571 return result & ASUS_WMI_DSTS_BRIGHTNESS_MASK;
572 }
573
asus_wmi_led_exit(struct asus_wmi * asus)574 static void asus_wmi_led_exit(struct asus_wmi *asus)
575 {
576 if (!IS_ERR_OR_NULL(asus->kbd_led.dev))
577 led_classdev_unregister(&asus->kbd_led);
578 if (!IS_ERR_OR_NULL(asus->tpd_led.dev))
579 led_classdev_unregister(&asus->tpd_led);
580 if (!IS_ERR_OR_NULL(asus->wlan_led.dev))
581 led_classdev_unregister(&asus->wlan_led);
582 if (asus->led_workqueue)
583 destroy_workqueue(asus->led_workqueue);
584 }
585
asus_wmi_led_init(struct asus_wmi * asus)586 static int asus_wmi_led_init(struct asus_wmi *asus)
587 {
588 int rv = 0, led_val;
589
590 asus->led_workqueue = create_singlethread_workqueue("led_workqueue");
591 if (!asus->led_workqueue)
592 return -ENOMEM;
593
594 if (read_tpd_led_state(asus) >= 0) {
595 INIT_WORK(&asus->tpd_led_work, tpd_led_update);
596
597 asus->tpd_led.name = "asus::touchpad";
598 asus->tpd_led.brightness_set = tpd_led_set;
599 asus->tpd_led.brightness_get = tpd_led_get;
600 asus->tpd_led.max_brightness = 1;
601
602 rv = led_classdev_register(&asus->platform_device->dev,
603 &asus->tpd_led);
604 if (rv)
605 goto error;
606 }
607
608 led_val = kbd_led_read(asus, NULL, NULL);
609 if (led_val >= 0) {
610 INIT_WORK(&asus->kbd_led_work, kbd_led_update);
611
612 asus->kbd_led_wk = led_val;
613 asus->kbd_led.name = "asus::kbd_backlight";
614 asus->kbd_led.brightness_set = kbd_led_set;
615 asus->kbd_led.brightness_get = kbd_led_get;
616 asus->kbd_led.max_brightness = 3;
617
618 rv = led_classdev_register(&asus->platform_device->dev,
619 &asus->kbd_led);
620 if (rv)
621 goto error;
622 }
623
624 if (wlan_led_presence(asus) && (asus->driver->quirks->wapf > 0)) {
625 INIT_WORK(&asus->wlan_led_work, wlan_led_update);
626
627 asus->wlan_led.name = "asus::wlan";
628 asus->wlan_led.brightness_set = wlan_led_set;
629 if (!wlan_led_unknown_state(asus))
630 asus->wlan_led.brightness_get = wlan_led_get;
631 asus->wlan_led.flags = LED_CORE_SUSPENDRESUME;
632 asus->wlan_led.max_brightness = 1;
633 asus->wlan_led.default_trigger = "asus-wlan";
634
635 rv = led_classdev_register(&asus->platform_device->dev,
636 &asus->wlan_led);
637 }
638
639 error:
640 if (rv)
641 asus_wmi_led_exit(asus);
642
643 return rv;
644 }
645
646
647 /*
648 * PCI hotplug (for wlan rfkill)
649 */
asus_wlan_rfkill_blocked(struct asus_wmi * asus)650 static bool asus_wlan_rfkill_blocked(struct asus_wmi *asus)
651 {
652 int result = asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WLAN);
653
654 if (result < 0)
655 return false;
656 return !result;
657 }
658
asus_rfkill_hotplug(struct asus_wmi * asus)659 static void asus_rfkill_hotplug(struct asus_wmi *asus)
660 {
661 struct pci_dev *dev;
662 struct pci_bus *bus;
663 bool blocked;
664 bool absent;
665 u32 l;
666
667 mutex_lock(&asus->wmi_lock);
668 blocked = asus_wlan_rfkill_blocked(asus);
669 mutex_unlock(&asus->wmi_lock);
670
671 mutex_lock(&asus->hotplug_lock);
672 pci_lock_rescan_remove();
673
674 if (asus->wlan.rfkill)
675 rfkill_set_sw_state(asus->wlan.rfkill, blocked);
676
677 if (asus->hotplug_slot) {
678 bus = pci_find_bus(0, 1);
679 if (!bus) {
680 pr_warn("Unable to find PCI bus 1?\n");
681 goto out_unlock;
682 }
683
684 if (pci_bus_read_config_dword(bus, 0, PCI_VENDOR_ID, &l)) {
685 pr_err("Unable to read PCI config space?\n");
686 goto out_unlock;
687 }
688 absent = (l == 0xffffffff);
689
690 if (blocked != absent) {
691 pr_warn("BIOS says wireless lan is %s, "
692 "but the pci device is %s\n",
693 blocked ? "blocked" : "unblocked",
694 absent ? "absent" : "present");
695 pr_warn("skipped wireless hotplug as probably "
696 "inappropriate for this model\n");
697 goto out_unlock;
698 }
699
700 if (!blocked) {
701 dev = pci_get_slot(bus, 0);
702 if (dev) {
703 /* Device already present */
704 pci_dev_put(dev);
705 goto out_unlock;
706 }
707 dev = pci_scan_single_device(bus, 0);
708 if (dev) {
709 pci_bus_assign_resources(bus);
710 pci_bus_add_device(dev);
711 }
712 } else {
713 dev = pci_get_slot(bus, 0);
714 if (dev) {
715 pci_stop_and_remove_bus_device(dev);
716 pci_dev_put(dev);
717 }
718 }
719 }
720
721 out_unlock:
722 pci_unlock_rescan_remove();
723 mutex_unlock(&asus->hotplug_lock);
724 }
725
asus_rfkill_notify(acpi_handle handle,u32 event,void * data)726 static void asus_rfkill_notify(acpi_handle handle, u32 event, void *data)
727 {
728 struct asus_wmi *asus = data;
729
730 if (event != ACPI_NOTIFY_BUS_CHECK)
731 return;
732
733 /*
734 * We can't call directly asus_rfkill_hotplug because most
735 * of the time WMBC is still being executed and not reetrant.
736 * There is currently no way to tell ACPICA that we want this
737 * method to be serialized, we schedule a asus_rfkill_hotplug
738 * call later, in a safer context.
739 */
740 queue_work(asus->hotplug_workqueue, &asus->hotplug_work);
741 }
742
asus_register_rfkill_notifier(struct asus_wmi * asus,char * node)743 static int asus_register_rfkill_notifier(struct asus_wmi *asus, char *node)
744 {
745 acpi_status status;
746 acpi_handle handle;
747
748 status = acpi_get_handle(NULL, node, &handle);
749
750 if (ACPI_SUCCESS(status)) {
751 status = acpi_install_notify_handler(handle,
752 ACPI_SYSTEM_NOTIFY,
753 asus_rfkill_notify, asus);
754 if (ACPI_FAILURE(status))
755 pr_warn("Failed to register notify on %s\n", node);
756 } else
757 return -ENODEV;
758
759 return 0;
760 }
761
asus_unregister_rfkill_notifier(struct asus_wmi * asus,char * node)762 static void asus_unregister_rfkill_notifier(struct asus_wmi *asus, char *node)
763 {
764 acpi_status status = AE_OK;
765 acpi_handle handle;
766
767 status = acpi_get_handle(NULL, node, &handle);
768
769 if (ACPI_SUCCESS(status)) {
770 status = acpi_remove_notify_handler(handle,
771 ACPI_SYSTEM_NOTIFY,
772 asus_rfkill_notify);
773 if (ACPI_FAILURE(status))
774 pr_err("Error removing rfkill notify handler %s\n",
775 node);
776 }
777 }
778
asus_get_adapter_status(struct hotplug_slot * hotplug_slot,u8 * value)779 static int asus_get_adapter_status(struct hotplug_slot *hotplug_slot,
780 u8 *value)
781 {
782 struct asus_wmi *asus = hotplug_slot->private;
783 int result = asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WLAN);
784
785 if (result < 0)
786 return result;
787
788 *value = !!result;
789 return 0;
790 }
791
asus_cleanup_pci_hotplug(struct hotplug_slot * hotplug_slot)792 static void asus_cleanup_pci_hotplug(struct hotplug_slot *hotplug_slot)
793 {
794 kfree(hotplug_slot->info);
795 kfree(hotplug_slot);
796 }
797
798 static struct hotplug_slot_ops asus_hotplug_slot_ops = {
799 .owner = THIS_MODULE,
800 .get_adapter_status = asus_get_adapter_status,
801 .get_power_status = asus_get_adapter_status,
802 };
803
asus_hotplug_work(struct work_struct * work)804 static void asus_hotplug_work(struct work_struct *work)
805 {
806 struct asus_wmi *asus;
807
808 asus = container_of(work, struct asus_wmi, hotplug_work);
809 asus_rfkill_hotplug(asus);
810 }
811
asus_setup_pci_hotplug(struct asus_wmi * asus)812 static int asus_setup_pci_hotplug(struct asus_wmi *asus)
813 {
814 int ret = -ENOMEM;
815 struct pci_bus *bus = pci_find_bus(0, 1);
816
817 if (!bus) {
818 pr_err("Unable to find wifi PCI bus\n");
819 return -ENODEV;
820 }
821
822 asus->hotplug_workqueue =
823 create_singlethread_workqueue("hotplug_workqueue");
824 if (!asus->hotplug_workqueue)
825 goto error_workqueue;
826
827 INIT_WORK(&asus->hotplug_work, asus_hotplug_work);
828
829 asus->hotplug_slot = kzalloc(sizeof(struct hotplug_slot), GFP_KERNEL);
830 if (!asus->hotplug_slot)
831 goto error_slot;
832
833 asus->hotplug_slot->info = kzalloc(sizeof(struct hotplug_slot_info),
834 GFP_KERNEL);
835 if (!asus->hotplug_slot->info)
836 goto error_info;
837
838 asus->hotplug_slot->private = asus;
839 asus->hotplug_slot->release = &asus_cleanup_pci_hotplug;
840 asus->hotplug_slot->ops = &asus_hotplug_slot_ops;
841 asus_get_adapter_status(asus->hotplug_slot,
842 &asus->hotplug_slot->info->adapter_status);
843
844 ret = pci_hp_register(asus->hotplug_slot, bus, 0, "asus-wifi");
845 if (ret) {
846 pr_err("Unable to register hotplug slot - %d\n", ret);
847 goto error_register;
848 }
849
850 return 0;
851
852 error_register:
853 kfree(asus->hotplug_slot->info);
854 error_info:
855 kfree(asus->hotplug_slot);
856 asus->hotplug_slot = NULL;
857 error_slot:
858 destroy_workqueue(asus->hotplug_workqueue);
859 error_workqueue:
860 return ret;
861 }
862
863 /*
864 * Rfkill devices
865 */
asus_rfkill_set(void * data,bool blocked)866 static int asus_rfkill_set(void *data, bool blocked)
867 {
868 struct asus_rfkill *priv = data;
869 u32 ctrl_param = !blocked;
870 u32 dev_id = priv->dev_id;
871
872 /*
873 * If the user bit is set, BIOS can't set and record the wlan status,
874 * it will report the value read from id ASUS_WMI_DEVID_WLAN_LED
875 * while we query the wlan status through WMI(ASUS_WMI_DEVID_WLAN).
876 * So, we have to record wlan status in id ASUS_WMI_DEVID_WLAN_LED
877 * while setting the wlan status through WMI.
878 * This is also the behavior that windows app will do.
879 */
880 if ((dev_id == ASUS_WMI_DEVID_WLAN) &&
881 priv->asus->driver->wlan_ctrl_by_user)
882 dev_id = ASUS_WMI_DEVID_WLAN_LED;
883
884 return asus_wmi_set_devstate(dev_id, ctrl_param, NULL);
885 }
886
asus_rfkill_query(struct rfkill * rfkill,void * data)887 static void asus_rfkill_query(struct rfkill *rfkill, void *data)
888 {
889 struct asus_rfkill *priv = data;
890 int result;
891
892 result = asus_wmi_get_devstate_simple(priv->asus, priv->dev_id);
893
894 if (result < 0)
895 return;
896
897 rfkill_set_sw_state(priv->rfkill, !result);
898 }
899
asus_rfkill_wlan_set(void * data,bool blocked)900 static int asus_rfkill_wlan_set(void *data, bool blocked)
901 {
902 struct asus_rfkill *priv = data;
903 struct asus_wmi *asus = priv->asus;
904 int ret;
905
906 /*
907 * This handler is enabled only if hotplug is enabled.
908 * In this case, the asus_wmi_set_devstate() will
909 * trigger a wmi notification and we need to wait
910 * this call to finish before being able to call
911 * any wmi method
912 */
913 mutex_lock(&asus->wmi_lock);
914 ret = asus_rfkill_set(data, blocked);
915 mutex_unlock(&asus->wmi_lock);
916 return ret;
917 }
918
919 static const struct rfkill_ops asus_rfkill_wlan_ops = {
920 .set_block = asus_rfkill_wlan_set,
921 .query = asus_rfkill_query,
922 };
923
924 static const struct rfkill_ops asus_rfkill_ops = {
925 .set_block = asus_rfkill_set,
926 .query = asus_rfkill_query,
927 };
928
asus_new_rfkill(struct asus_wmi * asus,struct asus_rfkill * arfkill,const char * name,enum rfkill_type type,int dev_id)929 static int asus_new_rfkill(struct asus_wmi *asus,
930 struct asus_rfkill *arfkill,
931 const char *name, enum rfkill_type type, int dev_id)
932 {
933 int result = asus_wmi_get_devstate_simple(asus, dev_id);
934 struct rfkill **rfkill = &arfkill->rfkill;
935
936 if (result < 0)
937 return result;
938
939 arfkill->dev_id = dev_id;
940 arfkill->asus = asus;
941
942 if (dev_id == ASUS_WMI_DEVID_WLAN &&
943 asus->driver->quirks->hotplug_wireless)
944 *rfkill = rfkill_alloc(name, &asus->platform_device->dev, type,
945 &asus_rfkill_wlan_ops, arfkill);
946 else
947 *rfkill = rfkill_alloc(name, &asus->platform_device->dev, type,
948 &asus_rfkill_ops, arfkill);
949
950 if (!*rfkill)
951 return -EINVAL;
952
953 if ((dev_id == ASUS_WMI_DEVID_WLAN) &&
954 (asus->driver->quirks->wapf > 0))
955 rfkill_set_led_trigger_name(*rfkill, "asus-wlan");
956
957 rfkill_init_sw_state(*rfkill, !result);
958 result = rfkill_register(*rfkill);
959 if (result) {
960 rfkill_destroy(*rfkill);
961 *rfkill = NULL;
962 return result;
963 }
964 return 0;
965 }
966
asus_wmi_rfkill_exit(struct asus_wmi * asus)967 static void asus_wmi_rfkill_exit(struct asus_wmi *asus)
968 {
969 if (asus->driver->wlan_ctrl_by_user && ashs_present())
970 return;
971
972 asus_unregister_rfkill_notifier(asus, "\\_SB.PCI0.P0P5");
973 asus_unregister_rfkill_notifier(asus, "\\_SB.PCI0.P0P6");
974 asus_unregister_rfkill_notifier(asus, "\\_SB.PCI0.P0P7");
975 if (asus->wlan.rfkill) {
976 rfkill_unregister(asus->wlan.rfkill);
977 rfkill_destroy(asus->wlan.rfkill);
978 asus->wlan.rfkill = NULL;
979 }
980 /*
981 * Refresh pci hotplug in case the rfkill state was changed after
982 * asus_unregister_rfkill_notifier()
983 */
984 asus_rfkill_hotplug(asus);
985 if (asus->hotplug_slot)
986 pci_hp_deregister(asus->hotplug_slot);
987 if (asus->hotplug_workqueue)
988 destroy_workqueue(asus->hotplug_workqueue);
989
990 if (asus->bluetooth.rfkill) {
991 rfkill_unregister(asus->bluetooth.rfkill);
992 rfkill_destroy(asus->bluetooth.rfkill);
993 asus->bluetooth.rfkill = NULL;
994 }
995 if (asus->wimax.rfkill) {
996 rfkill_unregister(asus->wimax.rfkill);
997 rfkill_destroy(asus->wimax.rfkill);
998 asus->wimax.rfkill = NULL;
999 }
1000 if (asus->wwan3g.rfkill) {
1001 rfkill_unregister(asus->wwan3g.rfkill);
1002 rfkill_destroy(asus->wwan3g.rfkill);
1003 asus->wwan3g.rfkill = NULL;
1004 }
1005 if (asus->gps.rfkill) {
1006 rfkill_unregister(asus->gps.rfkill);
1007 rfkill_destroy(asus->gps.rfkill);
1008 asus->gps.rfkill = NULL;
1009 }
1010 if (asus->uwb.rfkill) {
1011 rfkill_unregister(asus->uwb.rfkill);
1012 rfkill_destroy(asus->uwb.rfkill);
1013 asus->uwb.rfkill = NULL;
1014 }
1015 }
1016
asus_wmi_rfkill_init(struct asus_wmi * asus)1017 static int asus_wmi_rfkill_init(struct asus_wmi *asus)
1018 {
1019 int result = 0;
1020
1021 mutex_init(&asus->hotplug_lock);
1022 mutex_init(&asus->wmi_lock);
1023
1024 result = asus_new_rfkill(asus, &asus->wlan, "asus-wlan",
1025 RFKILL_TYPE_WLAN, ASUS_WMI_DEVID_WLAN);
1026
1027 if (result && result != -ENODEV)
1028 goto exit;
1029
1030 result = asus_new_rfkill(asus, &asus->bluetooth,
1031 "asus-bluetooth", RFKILL_TYPE_BLUETOOTH,
1032 ASUS_WMI_DEVID_BLUETOOTH);
1033
1034 if (result && result != -ENODEV)
1035 goto exit;
1036
1037 result = asus_new_rfkill(asus, &asus->wimax, "asus-wimax",
1038 RFKILL_TYPE_WIMAX, ASUS_WMI_DEVID_WIMAX);
1039
1040 if (result && result != -ENODEV)
1041 goto exit;
1042
1043 result = asus_new_rfkill(asus, &asus->wwan3g, "asus-wwan3g",
1044 RFKILL_TYPE_WWAN, ASUS_WMI_DEVID_WWAN3G);
1045
1046 if (result && result != -ENODEV)
1047 goto exit;
1048
1049 result = asus_new_rfkill(asus, &asus->gps, "asus-gps",
1050 RFKILL_TYPE_GPS, ASUS_WMI_DEVID_GPS);
1051
1052 if (result && result != -ENODEV)
1053 goto exit;
1054
1055 result = asus_new_rfkill(asus, &asus->uwb, "asus-uwb",
1056 RFKILL_TYPE_UWB, ASUS_WMI_DEVID_UWB);
1057
1058 if (result && result != -ENODEV)
1059 goto exit;
1060
1061 if (!asus->driver->quirks->hotplug_wireless)
1062 goto exit;
1063
1064 result = asus_setup_pci_hotplug(asus);
1065 /*
1066 * If we get -EBUSY then something else is handling the PCI hotplug -
1067 * don't fail in this case
1068 */
1069 if (result == -EBUSY)
1070 result = 0;
1071
1072 asus_register_rfkill_notifier(asus, "\\_SB.PCI0.P0P5");
1073 asus_register_rfkill_notifier(asus, "\\_SB.PCI0.P0P6");
1074 asus_register_rfkill_notifier(asus, "\\_SB.PCI0.P0P7");
1075 /*
1076 * Refresh pci hotplug in case the rfkill state was changed during
1077 * setup.
1078 */
1079 asus_rfkill_hotplug(asus);
1080
1081 exit:
1082 if (result && result != -ENODEV)
1083 asus_wmi_rfkill_exit(asus);
1084
1085 if (result == -ENODEV)
1086 result = 0;
1087
1088 return result;
1089 }
1090
asus_wmi_set_xusb2pr(struct asus_wmi * asus)1091 static void asus_wmi_set_xusb2pr(struct asus_wmi *asus)
1092 {
1093 struct pci_dev *xhci_pdev;
1094 u32 orig_ports_available;
1095 u32 ports_available = asus->driver->quirks->xusb2pr;
1096
1097 xhci_pdev = pci_get_device(PCI_VENDOR_ID_INTEL,
1098 PCI_DEVICE_ID_INTEL_LYNXPOINT_LP_XHCI,
1099 NULL);
1100
1101 if (!xhci_pdev)
1102 return;
1103
1104 pci_read_config_dword(xhci_pdev, USB_INTEL_XUSB2PR,
1105 &orig_ports_available);
1106
1107 pci_write_config_dword(xhci_pdev, USB_INTEL_XUSB2PR,
1108 cpu_to_le32(ports_available));
1109
1110 pr_info("set USB_INTEL_XUSB2PR old: 0x%04x, new: 0x%04x\n",
1111 orig_ports_available, ports_available);
1112 }
1113
1114 /*
1115 * Some devices dont support or have borcken get_als method
1116 * but still support set method.
1117 */
asus_wmi_set_als(void)1118 static void asus_wmi_set_als(void)
1119 {
1120 asus_wmi_set_devstate(ASUS_WMI_DEVID_ALS_ENABLE, 1, NULL);
1121 }
1122
1123 /*
1124 * Hwmon device
1125 */
asus_hwmon_agfn_fan_speed_read(struct asus_wmi * asus,int fan,int * speed)1126 static int asus_hwmon_agfn_fan_speed_read(struct asus_wmi *asus, int fan,
1127 int *speed)
1128 {
1129 struct fan_args args = {
1130 .agfn.len = sizeof(args),
1131 .agfn.mfun = ASUS_FAN_MFUN,
1132 .agfn.sfun = ASUS_FAN_SFUN_READ,
1133 .fan = fan,
1134 .speed = 0,
1135 };
1136 struct acpi_buffer input = { (acpi_size) sizeof(args), &args };
1137 int status;
1138
1139 if (fan != 1)
1140 return -EINVAL;
1141
1142 status = asus_wmi_evaluate_method_agfn(input);
1143
1144 if (status || args.agfn.err)
1145 return -ENXIO;
1146
1147 if (speed)
1148 *speed = args.speed;
1149
1150 return 0;
1151 }
1152
asus_hwmon_agfn_fan_speed_write(struct asus_wmi * asus,int fan,int * speed)1153 static int asus_hwmon_agfn_fan_speed_write(struct asus_wmi *asus, int fan,
1154 int *speed)
1155 {
1156 struct fan_args args = {
1157 .agfn.len = sizeof(args),
1158 .agfn.mfun = ASUS_FAN_MFUN,
1159 .agfn.sfun = ASUS_FAN_SFUN_WRITE,
1160 .fan = fan,
1161 .speed = speed ? *speed : 0,
1162 };
1163 struct acpi_buffer input = { (acpi_size) sizeof(args), &args };
1164 int status;
1165
1166 /* 1: for setting 1st fan's speed 0: setting auto mode */
1167 if (fan != 1 && fan != 0)
1168 return -EINVAL;
1169
1170 status = asus_wmi_evaluate_method_agfn(input);
1171
1172 if (status || args.agfn.err)
1173 return -ENXIO;
1174
1175 if (speed && fan == 1)
1176 asus->asus_hwmon_pwm = *speed;
1177
1178 return 0;
1179 }
1180
1181 /*
1182 * Check if we can read the speed of one fan. If true we assume we can also
1183 * control it.
1184 */
asus_hwmon_get_fan_number(struct asus_wmi * asus,int * num_fans)1185 static int asus_hwmon_get_fan_number(struct asus_wmi *asus, int *num_fans)
1186 {
1187 int status;
1188 int speed = 0;
1189
1190 *num_fans = 0;
1191
1192 status = asus_hwmon_agfn_fan_speed_read(asus, 1, &speed);
1193 if (!status)
1194 *num_fans = 1;
1195
1196 return 0;
1197 }
1198
asus_hwmon_fan_set_auto(struct asus_wmi * asus)1199 static int asus_hwmon_fan_set_auto(struct asus_wmi *asus)
1200 {
1201 int status;
1202
1203 status = asus_hwmon_agfn_fan_speed_write(asus, 0, NULL);
1204 if (status)
1205 return -ENXIO;
1206
1207 asus->asus_hwmon_fan_manual_mode = false;
1208
1209 return 0;
1210 }
1211
asus_hwmon_fan_rpm_show(struct device * dev,int fan)1212 static int asus_hwmon_fan_rpm_show(struct device *dev, int fan)
1213 {
1214 struct asus_wmi *asus = dev_get_drvdata(dev);
1215 int value;
1216 int ret;
1217
1218 /* no speed readable on manual mode */
1219 if (asus->asus_hwmon_fan_manual_mode)
1220 return -ENXIO;
1221
1222 ret = asus_hwmon_agfn_fan_speed_read(asus, fan+1, &value);
1223 if (ret) {
1224 pr_warn("reading fan speed failed: %d\n", ret);
1225 return -ENXIO;
1226 }
1227
1228 return value;
1229 }
1230
asus_hwmon_pwm_show(struct asus_wmi * asus,int fan,int * value)1231 static void asus_hwmon_pwm_show(struct asus_wmi *asus, int fan, int *value)
1232 {
1233 int err;
1234
1235 if (asus->asus_hwmon_pwm >= 0) {
1236 *value = asus->asus_hwmon_pwm;
1237 return;
1238 }
1239
1240 err = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_FAN_CTRL, value);
1241 if (err < 0)
1242 return;
1243
1244 *value &= 0xFF;
1245
1246 if (*value == 1) /* Low Speed */
1247 *value = 85;
1248 else if (*value == 2)
1249 *value = 170;
1250 else if (*value == 3)
1251 *value = 255;
1252 else if (*value) {
1253 pr_err("Unknown fan speed %#x\n", *value);
1254 *value = -1;
1255 }
1256 }
1257
pwm1_show(struct device * dev,struct device_attribute * attr,char * buf)1258 static ssize_t pwm1_show(struct device *dev,
1259 struct device_attribute *attr,
1260 char *buf)
1261 {
1262 struct asus_wmi *asus = dev_get_drvdata(dev);
1263 int value;
1264
1265 asus_hwmon_pwm_show(asus, 0, &value);
1266
1267 return sprintf(buf, "%d\n", value);
1268 }
1269
pwm1_store(struct device * dev,struct device_attribute * attr,const char * buf,size_t count)1270 static ssize_t pwm1_store(struct device *dev,
1271 struct device_attribute *attr,
1272 const char *buf, size_t count) {
1273 struct asus_wmi *asus = dev_get_drvdata(dev);
1274 int value;
1275 int state;
1276 int ret;
1277
1278 ret = kstrtouint(buf, 10, &value);
1279
1280 if (ret)
1281 return ret;
1282
1283 value = clamp(value, 0, 255);
1284
1285 state = asus_hwmon_agfn_fan_speed_write(asus, 1, &value);
1286 if (state)
1287 pr_warn("Setting fan speed failed: %d\n", state);
1288 else
1289 asus->asus_hwmon_fan_manual_mode = true;
1290
1291 return count;
1292 }
1293
fan1_input_show(struct device * dev,struct device_attribute * attr,char * buf)1294 static ssize_t fan1_input_show(struct device *dev,
1295 struct device_attribute *attr,
1296 char *buf)
1297 {
1298 int value = asus_hwmon_fan_rpm_show(dev, 0);
1299
1300 return sprintf(buf, "%d\n", value < 0 ? -1 : value*100);
1301
1302 }
1303
pwm1_enable_show(struct device * dev,struct device_attribute * attr,char * buf)1304 static ssize_t pwm1_enable_show(struct device *dev,
1305 struct device_attribute *attr,
1306 char *buf)
1307 {
1308 struct asus_wmi *asus = dev_get_drvdata(dev);
1309
1310 if (asus->asus_hwmon_fan_manual_mode)
1311 return sprintf(buf, "%d\n", ASUS_FAN_CTRL_MANUAL);
1312
1313 return sprintf(buf, "%d\n", ASUS_FAN_CTRL_AUTO);
1314 }
1315
pwm1_enable_store(struct device * dev,struct device_attribute * attr,const char * buf,size_t count)1316 static ssize_t pwm1_enable_store(struct device *dev,
1317 struct device_attribute *attr,
1318 const char *buf, size_t count)
1319 {
1320 struct asus_wmi *asus = dev_get_drvdata(dev);
1321 int status = 0;
1322 int state;
1323 int ret;
1324
1325 ret = kstrtouint(buf, 10, &state);
1326
1327 if (ret)
1328 return ret;
1329
1330 if (state == ASUS_FAN_CTRL_MANUAL)
1331 asus->asus_hwmon_fan_manual_mode = true;
1332 else
1333 status = asus_hwmon_fan_set_auto(asus);
1334
1335 if (status)
1336 return status;
1337
1338 return count;
1339 }
1340
fan1_label_show(struct device * dev,struct device_attribute * attr,char * buf)1341 static ssize_t fan1_label_show(struct device *dev,
1342 struct device_attribute *attr,
1343 char *buf)
1344 {
1345 return sprintf(buf, "%s\n", ASUS_FAN_DESC);
1346 }
1347
asus_hwmon_temp1(struct device * dev,struct device_attribute * attr,char * buf)1348 static ssize_t asus_hwmon_temp1(struct device *dev,
1349 struct device_attribute *attr,
1350 char *buf)
1351 {
1352 struct asus_wmi *asus = dev_get_drvdata(dev);
1353 u32 value;
1354 int err;
1355
1356 err = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_THERMAL_CTRL, &value);
1357
1358 if (err < 0)
1359 return err;
1360
1361 value = DECI_KELVIN_TO_CELSIUS((value & 0xFFFF)) * 1000;
1362
1363 return sprintf(buf, "%d\n", value);
1364 }
1365
1366 /* Fan1 */
1367 static DEVICE_ATTR_RW(pwm1);
1368 static DEVICE_ATTR_RW(pwm1_enable);
1369 static DEVICE_ATTR_RO(fan1_input);
1370 static DEVICE_ATTR_RO(fan1_label);
1371
1372 /* Temperature */
1373 static DEVICE_ATTR(temp1_input, S_IRUGO, asus_hwmon_temp1, NULL);
1374
1375 static struct attribute *hwmon_attributes[] = {
1376 &dev_attr_pwm1.attr,
1377 &dev_attr_pwm1_enable.attr,
1378 &dev_attr_fan1_input.attr,
1379 &dev_attr_fan1_label.attr,
1380
1381 &dev_attr_temp1_input.attr,
1382 NULL
1383 };
1384
asus_hwmon_sysfs_is_visible(struct kobject * kobj,struct attribute * attr,int idx)1385 static umode_t asus_hwmon_sysfs_is_visible(struct kobject *kobj,
1386 struct attribute *attr, int idx)
1387 {
1388 struct device *dev = container_of(kobj, struct device, kobj);
1389 struct platform_device *pdev = to_platform_device(dev->parent);
1390 struct asus_wmi *asus = platform_get_drvdata(pdev);
1391 int dev_id = -1;
1392 int fan_attr = -1;
1393 u32 value = ASUS_WMI_UNSUPPORTED_METHOD;
1394 bool ok = true;
1395
1396 if (attr == &dev_attr_pwm1.attr)
1397 dev_id = ASUS_WMI_DEVID_FAN_CTRL;
1398 else if (attr == &dev_attr_temp1_input.attr)
1399 dev_id = ASUS_WMI_DEVID_THERMAL_CTRL;
1400
1401
1402 if (attr == &dev_attr_fan1_input.attr
1403 || attr == &dev_attr_fan1_label.attr
1404 || attr == &dev_attr_pwm1.attr
1405 || attr == &dev_attr_pwm1_enable.attr) {
1406 fan_attr = 1;
1407 }
1408
1409 if (dev_id != -1) {
1410 int err = asus_wmi_get_devstate(asus, dev_id, &value);
1411
1412 if (err < 0 && fan_attr == -1)
1413 return 0; /* can't return negative here */
1414 }
1415
1416 if (dev_id == ASUS_WMI_DEVID_FAN_CTRL) {
1417 /*
1418 * We need to find a better way, probably using sfun,
1419 * bits or spec ...
1420 * Currently we disable it if:
1421 * - ASUS_WMI_UNSUPPORTED_METHOD is returned
1422 * - reverved bits are non-zero
1423 * - sfun and presence bit are not set
1424 */
1425 if (value == ASUS_WMI_UNSUPPORTED_METHOD || value & 0xFFF80000
1426 || (!asus->sfun && !(value & ASUS_WMI_DSTS_PRESENCE_BIT)))
1427 ok = false;
1428 else
1429 ok = fan_attr <= asus->asus_hwmon_num_fans;
1430 } else if (dev_id == ASUS_WMI_DEVID_THERMAL_CTRL) {
1431 /* If value is zero, something is clearly wrong */
1432 if (!value)
1433 ok = false;
1434 } else if (fan_attr <= asus->asus_hwmon_num_fans && fan_attr != -1) {
1435 ok = true;
1436 } else {
1437 ok = false;
1438 }
1439
1440 return ok ? attr->mode : 0;
1441 }
1442
1443 static const struct attribute_group hwmon_attribute_group = {
1444 .is_visible = asus_hwmon_sysfs_is_visible,
1445 .attrs = hwmon_attributes
1446 };
1447 __ATTRIBUTE_GROUPS(hwmon_attribute);
1448
asus_wmi_hwmon_init(struct asus_wmi * asus)1449 static int asus_wmi_hwmon_init(struct asus_wmi *asus)
1450 {
1451 struct device *hwmon;
1452
1453 hwmon = hwmon_device_register_with_groups(&asus->platform_device->dev,
1454 "asus", asus,
1455 hwmon_attribute_groups);
1456 if (IS_ERR(hwmon)) {
1457 pr_err("Could not register asus hwmon device\n");
1458 return PTR_ERR(hwmon);
1459 }
1460 return 0;
1461 }
1462
1463 /*
1464 * Backlight
1465 */
read_backlight_power(struct asus_wmi * asus)1466 static int read_backlight_power(struct asus_wmi *asus)
1467 {
1468 int ret;
1469 if (asus->driver->quirks->store_backlight_power)
1470 ret = !asus->driver->panel_power;
1471 else
1472 ret = asus_wmi_get_devstate_simple(asus,
1473 ASUS_WMI_DEVID_BACKLIGHT);
1474
1475 if (ret < 0)
1476 return ret;
1477
1478 return ret ? FB_BLANK_UNBLANK : FB_BLANK_POWERDOWN;
1479 }
1480
read_brightness_max(struct asus_wmi * asus)1481 static int read_brightness_max(struct asus_wmi *asus)
1482 {
1483 u32 retval;
1484 int err;
1485
1486 err = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_BRIGHTNESS, &retval);
1487
1488 if (err < 0)
1489 return err;
1490
1491 retval = retval & ASUS_WMI_DSTS_MAX_BRIGTH_MASK;
1492 retval >>= 8;
1493
1494 if (!retval)
1495 return -ENODEV;
1496
1497 return retval;
1498 }
1499
read_brightness(struct backlight_device * bd)1500 static int read_brightness(struct backlight_device *bd)
1501 {
1502 struct asus_wmi *asus = bl_get_data(bd);
1503 u32 retval;
1504 int err;
1505
1506 err = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_BRIGHTNESS, &retval);
1507
1508 if (err < 0)
1509 return err;
1510
1511 return retval & ASUS_WMI_DSTS_BRIGHTNESS_MASK;
1512 }
1513
get_scalar_command(struct backlight_device * bd)1514 static u32 get_scalar_command(struct backlight_device *bd)
1515 {
1516 struct asus_wmi *asus = bl_get_data(bd);
1517 u32 ctrl_param = 0;
1518
1519 if ((asus->driver->brightness < bd->props.brightness) ||
1520 bd->props.brightness == bd->props.max_brightness)
1521 ctrl_param = 0x00008001;
1522 else if ((asus->driver->brightness > bd->props.brightness) ||
1523 bd->props.brightness == 0)
1524 ctrl_param = 0x00008000;
1525
1526 asus->driver->brightness = bd->props.brightness;
1527
1528 return ctrl_param;
1529 }
1530
update_bl_status(struct backlight_device * bd)1531 static int update_bl_status(struct backlight_device *bd)
1532 {
1533 struct asus_wmi *asus = bl_get_data(bd);
1534 u32 ctrl_param;
1535 int power, err = 0;
1536
1537 power = read_backlight_power(asus);
1538 if (power != -ENODEV && bd->props.power != power) {
1539 ctrl_param = !!(bd->props.power == FB_BLANK_UNBLANK);
1540 err = asus_wmi_set_devstate(ASUS_WMI_DEVID_BACKLIGHT,
1541 ctrl_param, NULL);
1542 if (asus->driver->quirks->store_backlight_power)
1543 asus->driver->panel_power = bd->props.power;
1544
1545 /* When using scalar brightness, updating the brightness
1546 * will mess with the backlight power */
1547 if (asus->driver->quirks->scalar_panel_brightness)
1548 return err;
1549 }
1550
1551 if (asus->driver->quirks->scalar_panel_brightness)
1552 ctrl_param = get_scalar_command(bd);
1553 else
1554 ctrl_param = bd->props.brightness;
1555
1556 err = asus_wmi_set_devstate(ASUS_WMI_DEVID_BRIGHTNESS,
1557 ctrl_param, NULL);
1558
1559 return err;
1560 }
1561
1562 static const struct backlight_ops asus_wmi_bl_ops = {
1563 .get_brightness = read_brightness,
1564 .update_status = update_bl_status,
1565 };
1566
asus_wmi_backlight_notify(struct asus_wmi * asus,int code)1567 static int asus_wmi_backlight_notify(struct asus_wmi *asus, int code)
1568 {
1569 struct backlight_device *bd = asus->backlight_device;
1570 int old = bd->props.brightness;
1571 int new = old;
1572
1573 if (code >= NOTIFY_BRNUP_MIN && code <= NOTIFY_BRNUP_MAX)
1574 new = code - NOTIFY_BRNUP_MIN + 1;
1575 else if (code >= NOTIFY_BRNDOWN_MIN && code <= NOTIFY_BRNDOWN_MAX)
1576 new = code - NOTIFY_BRNDOWN_MIN;
1577
1578 bd->props.brightness = new;
1579 backlight_update_status(bd);
1580 backlight_force_update(bd, BACKLIGHT_UPDATE_HOTKEY);
1581
1582 return old;
1583 }
1584
asus_wmi_backlight_init(struct asus_wmi * asus)1585 static int asus_wmi_backlight_init(struct asus_wmi *asus)
1586 {
1587 struct backlight_device *bd;
1588 struct backlight_properties props;
1589 int max;
1590 int power;
1591
1592 max = read_brightness_max(asus);
1593 if (max < 0)
1594 return max;
1595
1596 power = read_backlight_power(asus);
1597
1598 if (power == -ENODEV)
1599 power = FB_BLANK_UNBLANK;
1600 else if (power < 0)
1601 return power;
1602
1603 memset(&props, 0, sizeof(struct backlight_properties));
1604 props.type = BACKLIGHT_PLATFORM;
1605 props.max_brightness = max;
1606 bd = backlight_device_register(asus->driver->name,
1607 &asus->platform_device->dev, asus,
1608 &asus_wmi_bl_ops, &props);
1609 if (IS_ERR(bd)) {
1610 pr_err("Could not register backlight device\n");
1611 return PTR_ERR(bd);
1612 }
1613
1614 asus->backlight_device = bd;
1615
1616 if (asus->driver->quirks->store_backlight_power)
1617 asus->driver->panel_power = power;
1618
1619 bd->props.brightness = read_brightness(bd);
1620 bd->props.power = power;
1621 backlight_update_status(bd);
1622
1623 asus->driver->brightness = bd->props.brightness;
1624
1625 return 0;
1626 }
1627
asus_wmi_backlight_exit(struct asus_wmi * asus)1628 static void asus_wmi_backlight_exit(struct asus_wmi *asus)
1629 {
1630 backlight_device_unregister(asus->backlight_device);
1631
1632 asus->backlight_device = NULL;
1633 }
1634
is_display_toggle(int code)1635 static int is_display_toggle(int code)
1636 {
1637 /* display toggle keys */
1638 if ((code >= 0x61 && code <= 0x67) ||
1639 (code >= 0x8c && code <= 0x93) ||
1640 (code >= 0xa0 && code <= 0xa7) ||
1641 (code >= 0xd0 && code <= 0xd5))
1642 return 1;
1643
1644 return 0;
1645 }
1646
asus_wmi_notify(u32 value,void * context)1647 static void asus_wmi_notify(u32 value, void *context)
1648 {
1649 struct asus_wmi *asus = context;
1650 struct acpi_buffer response = { ACPI_ALLOCATE_BUFFER, NULL };
1651 union acpi_object *obj;
1652 acpi_status status;
1653 int code;
1654 int orig_code;
1655 unsigned int key_value = 1;
1656 bool autorelease = 1;
1657
1658 status = wmi_get_event_data(value, &response);
1659 if (status != AE_OK) {
1660 pr_err("bad event status 0x%x\n", status);
1661 return;
1662 }
1663
1664 obj = (union acpi_object *)response.pointer;
1665
1666 if (!obj || obj->type != ACPI_TYPE_INTEGER)
1667 goto exit;
1668
1669 code = obj->integer.value;
1670 orig_code = code;
1671
1672 if (asus->driver->key_filter) {
1673 asus->driver->key_filter(asus->driver, &code, &key_value,
1674 &autorelease);
1675 if (code == ASUS_WMI_KEY_IGNORE)
1676 goto exit;
1677 }
1678
1679 if (code >= NOTIFY_BRNUP_MIN && code <= NOTIFY_BRNUP_MAX)
1680 code = ASUS_WMI_BRN_UP;
1681 else if (code >= NOTIFY_BRNDOWN_MIN &&
1682 code <= NOTIFY_BRNDOWN_MAX)
1683 code = ASUS_WMI_BRN_DOWN;
1684
1685 if (code == ASUS_WMI_BRN_DOWN || code == ASUS_WMI_BRN_UP) {
1686 if (acpi_video_get_backlight_type() == acpi_backlight_vendor) {
1687 asus_wmi_backlight_notify(asus, orig_code);
1688 goto exit;
1689 }
1690 }
1691
1692 if (is_display_toggle(code) &&
1693 asus->driver->quirks->no_display_toggle)
1694 goto exit;
1695
1696 if (!sparse_keymap_report_event(asus->inputdev, code,
1697 key_value, autorelease))
1698 pr_info("Unknown key %x pressed\n", code);
1699
1700 exit:
1701 kfree(obj);
1702 }
1703
1704 /*
1705 * Sys helpers
1706 */
parse_arg(const char * buf,unsigned long count,int * val)1707 static int parse_arg(const char *buf, unsigned long count, int *val)
1708 {
1709 if (!count)
1710 return 0;
1711 if (sscanf(buf, "%i", val) != 1)
1712 return -EINVAL;
1713 return count;
1714 }
1715
store_sys_wmi(struct asus_wmi * asus,int devid,const char * buf,size_t count)1716 static ssize_t store_sys_wmi(struct asus_wmi *asus, int devid,
1717 const char *buf, size_t count)
1718 {
1719 u32 retval;
1720 int rv, err, value;
1721
1722 value = asus_wmi_get_devstate_simple(asus, devid);
1723 if (value < 0)
1724 return value;
1725
1726 rv = parse_arg(buf, count, &value);
1727 err = asus_wmi_set_devstate(devid, value, &retval);
1728
1729 if (err < 0)
1730 return err;
1731
1732 return rv;
1733 }
1734
show_sys_wmi(struct asus_wmi * asus,int devid,char * buf)1735 static ssize_t show_sys_wmi(struct asus_wmi *asus, int devid, char *buf)
1736 {
1737 int value = asus_wmi_get_devstate_simple(asus, devid);
1738
1739 if (value < 0)
1740 return value;
1741
1742 return sprintf(buf, "%d\n", value);
1743 }
1744
1745 #define ASUS_WMI_CREATE_DEVICE_ATTR(_name, _mode, _cm) \
1746 static ssize_t show_##_name(struct device *dev, \
1747 struct device_attribute *attr, \
1748 char *buf) \
1749 { \
1750 struct asus_wmi *asus = dev_get_drvdata(dev); \
1751 \
1752 return show_sys_wmi(asus, _cm, buf); \
1753 } \
1754 static ssize_t store_##_name(struct device *dev, \
1755 struct device_attribute *attr, \
1756 const char *buf, size_t count) \
1757 { \
1758 struct asus_wmi *asus = dev_get_drvdata(dev); \
1759 \
1760 return store_sys_wmi(asus, _cm, buf, count); \
1761 } \
1762 static struct device_attribute dev_attr_##_name = { \
1763 .attr = { \
1764 .name = __stringify(_name), \
1765 .mode = _mode }, \
1766 .show = show_##_name, \
1767 .store = store_##_name, \
1768 }
1769
1770 ASUS_WMI_CREATE_DEVICE_ATTR(touchpad, 0644, ASUS_WMI_DEVID_TOUCHPAD);
1771 ASUS_WMI_CREATE_DEVICE_ATTR(camera, 0644, ASUS_WMI_DEVID_CAMERA);
1772 ASUS_WMI_CREATE_DEVICE_ATTR(cardr, 0644, ASUS_WMI_DEVID_CARDREADER);
1773 ASUS_WMI_CREATE_DEVICE_ATTR(lid_resume, 0644, ASUS_WMI_DEVID_LID_RESUME);
1774 ASUS_WMI_CREATE_DEVICE_ATTR(als_enable, 0644, ASUS_WMI_DEVID_ALS_ENABLE);
1775
cpufv_store(struct device * dev,struct device_attribute * attr,const char * buf,size_t count)1776 static ssize_t cpufv_store(struct device *dev, struct device_attribute *attr,
1777 const char *buf, size_t count)
1778 {
1779 int value, rv;
1780
1781 if (!count || sscanf(buf, "%i", &value) != 1)
1782 return -EINVAL;
1783 if (value < 0 || value > 2)
1784 return -EINVAL;
1785
1786 rv = asus_wmi_evaluate_method(ASUS_WMI_METHODID_CFVS, value, 0, NULL);
1787 if (rv < 0)
1788 return rv;
1789
1790 return count;
1791 }
1792
1793 static DEVICE_ATTR_WO(cpufv);
1794
1795 static struct attribute *platform_attributes[] = {
1796 &dev_attr_cpufv.attr,
1797 &dev_attr_camera.attr,
1798 &dev_attr_cardr.attr,
1799 &dev_attr_touchpad.attr,
1800 &dev_attr_lid_resume.attr,
1801 &dev_attr_als_enable.attr,
1802 NULL
1803 };
1804
asus_sysfs_is_visible(struct kobject * kobj,struct attribute * attr,int idx)1805 static umode_t asus_sysfs_is_visible(struct kobject *kobj,
1806 struct attribute *attr, int idx)
1807 {
1808 struct device *dev = container_of(kobj, struct device, kobj);
1809 struct platform_device *pdev = to_platform_device(dev);
1810 struct asus_wmi *asus = platform_get_drvdata(pdev);
1811 bool ok = true;
1812 int devid = -1;
1813
1814 if (attr == &dev_attr_camera.attr)
1815 devid = ASUS_WMI_DEVID_CAMERA;
1816 else if (attr == &dev_attr_cardr.attr)
1817 devid = ASUS_WMI_DEVID_CARDREADER;
1818 else if (attr == &dev_attr_touchpad.attr)
1819 devid = ASUS_WMI_DEVID_TOUCHPAD;
1820 else if (attr == &dev_attr_lid_resume.attr)
1821 devid = ASUS_WMI_DEVID_LID_RESUME;
1822 else if (attr == &dev_attr_als_enable.attr)
1823 devid = ASUS_WMI_DEVID_ALS_ENABLE;
1824
1825 if (devid != -1)
1826 ok = !(asus_wmi_get_devstate_simple(asus, devid) < 0);
1827
1828 return ok ? attr->mode : 0;
1829 }
1830
1831 static const struct attribute_group platform_attribute_group = {
1832 .is_visible = asus_sysfs_is_visible,
1833 .attrs = platform_attributes
1834 };
1835
asus_wmi_sysfs_exit(struct platform_device * device)1836 static void asus_wmi_sysfs_exit(struct platform_device *device)
1837 {
1838 sysfs_remove_group(&device->dev.kobj, &platform_attribute_group);
1839 }
1840
asus_wmi_sysfs_init(struct platform_device * device)1841 static int asus_wmi_sysfs_init(struct platform_device *device)
1842 {
1843 return sysfs_create_group(&device->dev.kobj, &platform_attribute_group);
1844 }
1845
1846 /*
1847 * Platform device
1848 */
asus_wmi_platform_init(struct asus_wmi * asus)1849 static int asus_wmi_platform_init(struct asus_wmi *asus)
1850 {
1851 int rv;
1852
1853 /* INIT enable hotkeys on some models */
1854 if (!asus_wmi_evaluate_method(ASUS_WMI_METHODID_INIT, 0, 0, &rv))
1855 pr_info("Initialization: %#x\n", rv);
1856
1857 /* We don't know yet what to do with this version... */
1858 if (!asus_wmi_evaluate_method(ASUS_WMI_METHODID_SPEC, 0, 0x9, &rv)) {
1859 pr_info("BIOS WMI version: %d.%d\n", rv >> 16, rv & 0xFF);
1860 asus->spec = rv;
1861 }
1862
1863 /*
1864 * The SFUN method probably allows the original driver to get the list
1865 * of features supported by a given model. For now, 0x0100 or 0x0800
1866 * bit signifies that the laptop is equipped with a Wi-Fi MiniPCI card.
1867 * The significance of others is yet to be found.
1868 */
1869 if (!asus_wmi_evaluate_method(ASUS_WMI_METHODID_SFUN, 0, 0, &rv)) {
1870 pr_info("SFUN value: %#x\n", rv);
1871 asus->sfun = rv;
1872 }
1873
1874 /*
1875 * Eee PC and Notebooks seems to have different method_id for DSTS,
1876 * but it may also be related to the BIOS's SPEC.
1877 * Note, on most Eeepc, there is no way to check if a method exist
1878 * or note, while on notebooks, they returns 0xFFFFFFFE on failure,
1879 * but once again, SPEC may probably be used for that kind of things.
1880 */
1881 if (!asus_wmi_evaluate_method(ASUS_WMI_METHODID_DSTS, 0, 0, NULL))
1882 asus->dsts_id = ASUS_WMI_METHODID_DSTS;
1883 else
1884 asus->dsts_id = ASUS_WMI_METHODID_DSTS2;
1885
1886 /* CWAP allow to define the behavior of the Fn+F2 key,
1887 * this method doesn't seems to be present on Eee PCs */
1888 if (asus->driver->quirks->wapf >= 0)
1889 asus_wmi_set_devstate(ASUS_WMI_DEVID_CWAP,
1890 asus->driver->quirks->wapf, NULL);
1891
1892 return asus_wmi_sysfs_init(asus->platform_device);
1893 }
1894
asus_wmi_platform_exit(struct asus_wmi * asus)1895 static void asus_wmi_platform_exit(struct asus_wmi *asus)
1896 {
1897 asus_wmi_sysfs_exit(asus->platform_device);
1898 }
1899
1900 /*
1901 * debugfs
1902 */
1903 struct asus_wmi_debugfs_node {
1904 struct asus_wmi *asus;
1905 char *name;
1906 int (*show) (struct seq_file *m, void *data);
1907 };
1908
show_dsts(struct seq_file * m,void * data)1909 static int show_dsts(struct seq_file *m, void *data)
1910 {
1911 struct asus_wmi *asus = m->private;
1912 int err;
1913 u32 retval = -1;
1914
1915 err = asus_wmi_get_devstate(asus, asus->debug.dev_id, &retval);
1916
1917 if (err < 0)
1918 return err;
1919
1920 seq_printf(m, "DSTS(%#x) = %#x\n", asus->debug.dev_id, retval);
1921
1922 return 0;
1923 }
1924
show_devs(struct seq_file * m,void * data)1925 static int show_devs(struct seq_file *m, void *data)
1926 {
1927 struct asus_wmi *asus = m->private;
1928 int err;
1929 u32 retval = -1;
1930
1931 err = asus_wmi_set_devstate(asus->debug.dev_id, asus->debug.ctrl_param,
1932 &retval);
1933
1934 if (err < 0)
1935 return err;
1936
1937 seq_printf(m, "DEVS(%#x, %#x) = %#x\n", asus->debug.dev_id,
1938 asus->debug.ctrl_param, retval);
1939
1940 return 0;
1941 }
1942
show_call(struct seq_file * m,void * data)1943 static int show_call(struct seq_file *m, void *data)
1944 {
1945 struct asus_wmi *asus = m->private;
1946 struct bios_args args = {
1947 .arg0 = asus->debug.dev_id,
1948 .arg1 = asus->debug.ctrl_param,
1949 };
1950 struct acpi_buffer input = { (acpi_size) sizeof(args), &args };
1951 struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
1952 union acpi_object *obj;
1953 acpi_status status;
1954
1955 status = wmi_evaluate_method(ASUS_WMI_MGMT_GUID,
1956 0, asus->debug.method_id,
1957 &input, &output);
1958
1959 if (ACPI_FAILURE(status))
1960 return -EIO;
1961
1962 obj = (union acpi_object *)output.pointer;
1963 if (obj && obj->type == ACPI_TYPE_INTEGER)
1964 seq_printf(m, "%#x(%#x, %#x) = %#x\n", asus->debug.method_id,
1965 asus->debug.dev_id, asus->debug.ctrl_param,
1966 (u32) obj->integer.value);
1967 else
1968 seq_printf(m, "%#x(%#x, %#x) = t:%d\n", asus->debug.method_id,
1969 asus->debug.dev_id, asus->debug.ctrl_param,
1970 obj ? obj->type : -1);
1971
1972 kfree(obj);
1973
1974 return 0;
1975 }
1976
1977 static struct asus_wmi_debugfs_node asus_wmi_debug_files[] = {
1978 {NULL, "devs", show_devs},
1979 {NULL, "dsts", show_dsts},
1980 {NULL, "call", show_call},
1981 };
1982
asus_wmi_debugfs_open(struct inode * inode,struct file * file)1983 static int asus_wmi_debugfs_open(struct inode *inode, struct file *file)
1984 {
1985 struct asus_wmi_debugfs_node *node = inode->i_private;
1986
1987 return single_open(file, node->show, node->asus);
1988 }
1989
1990 static const struct file_operations asus_wmi_debugfs_io_ops = {
1991 .owner = THIS_MODULE,
1992 .open = asus_wmi_debugfs_open,
1993 .read = seq_read,
1994 .llseek = seq_lseek,
1995 .release = single_release,
1996 };
1997
asus_wmi_debugfs_exit(struct asus_wmi * asus)1998 static void asus_wmi_debugfs_exit(struct asus_wmi *asus)
1999 {
2000 debugfs_remove_recursive(asus->debug.root);
2001 }
2002
asus_wmi_debugfs_init(struct asus_wmi * asus)2003 static int asus_wmi_debugfs_init(struct asus_wmi *asus)
2004 {
2005 struct dentry *dent;
2006 int i;
2007
2008 asus->debug.root = debugfs_create_dir(asus->driver->name, NULL);
2009 if (!asus->debug.root) {
2010 pr_err("failed to create debugfs directory\n");
2011 goto error_debugfs;
2012 }
2013
2014 dent = debugfs_create_x32("method_id", S_IRUGO | S_IWUSR,
2015 asus->debug.root, &asus->debug.method_id);
2016 if (!dent)
2017 goto error_debugfs;
2018
2019 dent = debugfs_create_x32("dev_id", S_IRUGO | S_IWUSR,
2020 asus->debug.root, &asus->debug.dev_id);
2021 if (!dent)
2022 goto error_debugfs;
2023
2024 dent = debugfs_create_x32("ctrl_param", S_IRUGO | S_IWUSR,
2025 asus->debug.root, &asus->debug.ctrl_param);
2026 if (!dent)
2027 goto error_debugfs;
2028
2029 for (i = 0; i < ARRAY_SIZE(asus_wmi_debug_files); i++) {
2030 struct asus_wmi_debugfs_node *node = &asus_wmi_debug_files[i];
2031
2032 node->asus = asus;
2033 dent = debugfs_create_file(node->name, S_IFREG | S_IRUGO,
2034 asus->debug.root, node,
2035 &asus_wmi_debugfs_io_ops);
2036 if (!dent) {
2037 pr_err("failed to create debug file: %s\n", node->name);
2038 goto error_debugfs;
2039 }
2040 }
2041
2042 return 0;
2043
2044 error_debugfs:
2045 asus_wmi_debugfs_exit(asus);
2046 return -ENOMEM;
2047 }
2048
asus_wmi_fan_init(struct asus_wmi * asus)2049 static int asus_wmi_fan_init(struct asus_wmi *asus)
2050 {
2051 int status;
2052
2053 asus->asus_hwmon_pwm = -1;
2054 asus->asus_hwmon_num_fans = -1;
2055 asus->asus_hwmon_fan_manual_mode = false;
2056
2057 status = asus_hwmon_get_fan_number(asus, &asus->asus_hwmon_num_fans);
2058 if (status) {
2059 asus->asus_hwmon_num_fans = 0;
2060 pr_warn("Could not determine number of fans: %d\n", status);
2061 return -ENXIO;
2062 }
2063
2064 pr_info("Number of fans: %d\n", asus->asus_hwmon_num_fans);
2065 return 0;
2066 }
2067
2068 /*
2069 * WMI Driver
2070 */
asus_wmi_add(struct platform_device * pdev)2071 static int asus_wmi_add(struct platform_device *pdev)
2072 {
2073 struct platform_driver *pdrv = to_platform_driver(pdev->dev.driver);
2074 struct asus_wmi_driver *wdrv = to_asus_wmi_driver(pdrv);
2075 struct asus_wmi *asus;
2076 const char *chassis_type;
2077 acpi_status status;
2078 int err;
2079 u32 result;
2080
2081 asus = kzalloc(sizeof(struct asus_wmi), GFP_KERNEL);
2082 if (!asus)
2083 return -ENOMEM;
2084
2085 asus->driver = wdrv;
2086 asus->platform_device = pdev;
2087 wdrv->platform_device = pdev;
2088 platform_set_drvdata(asus->platform_device, asus);
2089
2090 if (wdrv->detect_quirks)
2091 wdrv->detect_quirks(asus->driver);
2092
2093 err = asus_wmi_platform_init(asus);
2094 if (err)
2095 goto fail_platform;
2096
2097 err = asus_wmi_input_init(asus);
2098 if (err)
2099 goto fail_input;
2100
2101 err = asus_wmi_fan_init(asus); /* probably no problems on error */
2102 asus_hwmon_fan_set_auto(asus);
2103
2104 err = asus_wmi_hwmon_init(asus);
2105 if (err)
2106 goto fail_hwmon;
2107
2108 err = asus_wmi_led_init(asus);
2109 if (err)
2110 goto fail_leds;
2111
2112 asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_WLAN, &result);
2113 if (result & (ASUS_WMI_DSTS_PRESENCE_BIT | ASUS_WMI_DSTS_USER_BIT))
2114 asus->driver->wlan_ctrl_by_user = 1;
2115
2116 if (!(asus->driver->wlan_ctrl_by_user && ashs_present())) {
2117 err = asus_wmi_rfkill_init(asus);
2118 if (err)
2119 goto fail_rfkill;
2120 }
2121
2122 if (asus->driver->quirks->wmi_force_als_set)
2123 asus_wmi_set_als();
2124
2125 /* Some Asus desktop boards export an acpi-video backlight interface,
2126 stop this from showing up */
2127 chassis_type = dmi_get_system_info(DMI_CHASSIS_TYPE);
2128 if (chassis_type && !strcmp(chassis_type, "3"))
2129 acpi_video_set_dmi_backlight_type(acpi_backlight_vendor);
2130
2131 if (asus->driver->quirks->wmi_backlight_power)
2132 acpi_video_set_dmi_backlight_type(acpi_backlight_vendor);
2133
2134 if (asus->driver->quirks->wmi_backlight_native)
2135 acpi_video_set_dmi_backlight_type(acpi_backlight_native);
2136
2137 if (asus->driver->quirks->xusb2pr)
2138 asus_wmi_set_xusb2pr(asus);
2139
2140 if (acpi_video_get_backlight_type() == acpi_backlight_vendor) {
2141 err = asus_wmi_backlight_init(asus);
2142 if (err && err != -ENODEV)
2143 goto fail_backlight;
2144 } else if (asus->driver->quirks->wmi_backlight_set_devstate)
2145 err = asus_wmi_set_devstate(ASUS_WMI_DEVID_BACKLIGHT, 2, NULL);
2146
2147 status = wmi_install_notify_handler(asus->driver->event_guid,
2148 asus_wmi_notify, asus);
2149 if (ACPI_FAILURE(status)) {
2150 pr_err("Unable to register notify handler - %d\n", status);
2151 err = -ENODEV;
2152 goto fail_wmi_handler;
2153 }
2154
2155 err = asus_wmi_debugfs_init(asus);
2156 if (err)
2157 goto fail_debugfs;
2158
2159 return 0;
2160
2161 fail_debugfs:
2162 wmi_remove_notify_handler(asus->driver->event_guid);
2163 fail_wmi_handler:
2164 asus_wmi_backlight_exit(asus);
2165 fail_backlight:
2166 asus_wmi_rfkill_exit(asus);
2167 fail_rfkill:
2168 asus_wmi_led_exit(asus);
2169 fail_leds:
2170 fail_hwmon:
2171 asus_wmi_input_exit(asus);
2172 fail_input:
2173 asus_wmi_platform_exit(asus);
2174 fail_platform:
2175 kfree(asus);
2176 return err;
2177 }
2178
asus_wmi_remove(struct platform_device * device)2179 static int asus_wmi_remove(struct platform_device *device)
2180 {
2181 struct asus_wmi *asus;
2182
2183 asus = platform_get_drvdata(device);
2184 wmi_remove_notify_handler(asus->driver->event_guid);
2185 asus_wmi_backlight_exit(asus);
2186 asus_wmi_input_exit(asus);
2187 asus_wmi_led_exit(asus);
2188 asus_wmi_rfkill_exit(asus);
2189 asus_wmi_debugfs_exit(asus);
2190 asus_wmi_platform_exit(asus);
2191 asus_hwmon_fan_set_auto(asus);
2192
2193 kfree(asus);
2194 return 0;
2195 }
2196
2197 /*
2198 * Platform driver - hibernate/resume callbacks
2199 */
asus_hotk_thaw(struct device * device)2200 static int asus_hotk_thaw(struct device *device)
2201 {
2202 struct asus_wmi *asus = dev_get_drvdata(device);
2203
2204 if (asus->wlan.rfkill) {
2205 bool wlan;
2206
2207 /*
2208 * Work around bios bug - acpi _PTS turns off the wireless led
2209 * during suspend. Normally it restores it on resume, but
2210 * we should kick it ourselves in case hibernation is aborted.
2211 */
2212 wlan = asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WLAN);
2213 asus_wmi_set_devstate(ASUS_WMI_DEVID_WLAN, wlan, NULL);
2214 }
2215
2216 return 0;
2217 }
2218
asus_hotk_resume(struct device * device)2219 static int asus_hotk_resume(struct device *device)
2220 {
2221 struct asus_wmi *asus = dev_get_drvdata(device);
2222
2223 if (!IS_ERR_OR_NULL(asus->kbd_led.dev))
2224 queue_work(asus->led_workqueue, &asus->kbd_led_work);
2225
2226 return 0;
2227 }
2228
asus_hotk_restore(struct device * device)2229 static int asus_hotk_restore(struct device *device)
2230 {
2231 struct asus_wmi *asus = dev_get_drvdata(device);
2232 int bl;
2233
2234 /* Refresh both wlan rfkill state and pci hotplug */
2235 if (asus->wlan.rfkill)
2236 asus_rfkill_hotplug(asus);
2237
2238 if (asus->bluetooth.rfkill) {
2239 bl = !asus_wmi_get_devstate_simple(asus,
2240 ASUS_WMI_DEVID_BLUETOOTH);
2241 rfkill_set_sw_state(asus->bluetooth.rfkill, bl);
2242 }
2243 if (asus->wimax.rfkill) {
2244 bl = !asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WIMAX);
2245 rfkill_set_sw_state(asus->wimax.rfkill, bl);
2246 }
2247 if (asus->wwan3g.rfkill) {
2248 bl = !asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WWAN3G);
2249 rfkill_set_sw_state(asus->wwan3g.rfkill, bl);
2250 }
2251 if (asus->gps.rfkill) {
2252 bl = !asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_GPS);
2253 rfkill_set_sw_state(asus->gps.rfkill, bl);
2254 }
2255 if (asus->uwb.rfkill) {
2256 bl = !asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_UWB);
2257 rfkill_set_sw_state(asus->uwb.rfkill, bl);
2258 }
2259 if (!IS_ERR_OR_NULL(asus->kbd_led.dev))
2260 queue_work(asus->led_workqueue, &asus->kbd_led_work);
2261
2262 return 0;
2263 }
2264
2265 static const struct dev_pm_ops asus_pm_ops = {
2266 .thaw = asus_hotk_thaw,
2267 .restore = asus_hotk_restore,
2268 .resume = asus_hotk_resume,
2269 };
2270
asus_wmi_probe(struct platform_device * pdev)2271 static int asus_wmi_probe(struct platform_device *pdev)
2272 {
2273 struct platform_driver *pdrv = to_platform_driver(pdev->dev.driver);
2274 struct asus_wmi_driver *wdrv = to_asus_wmi_driver(pdrv);
2275 int ret;
2276
2277 if (!wmi_has_guid(ASUS_WMI_MGMT_GUID)) {
2278 pr_warn("Management GUID not found\n");
2279 return -ENODEV;
2280 }
2281
2282 if (wdrv->event_guid && !wmi_has_guid(wdrv->event_guid)) {
2283 pr_warn("Event GUID not found\n");
2284 return -ENODEV;
2285 }
2286
2287 if (wdrv->probe) {
2288 ret = wdrv->probe(pdev);
2289 if (ret)
2290 return ret;
2291 }
2292
2293 return asus_wmi_add(pdev);
2294 }
2295
2296 static bool used;
2297
asus_wmi_register_driver(struct asus_wmi_driver * driver)2298 int __init_or_module asus_wmi_register_driver(struct asus_wmi_driver *driver)
2299 {
2300 struct platform_driver *platform_driver;
2301 struct platform_device *platform_device;
2302
2303 if (used)
2304 return -EBUSY;
2305
2306 platform_driver = &driver->platform_driver;
2307 platform_driver->remove = asus_wmi_remove;
2308 platform_driver->driver.owner = driver->owner;
2309 platform_driver->driver.name = driver->name;
2310 platform_driver->driver.pm = &asus_pm_ops;
2311
2312 platform_device = platform_create_bundle(platform_driver,
2313 asus_wmi_probe,
2314 NULL, 0, NULL, 0);
2315 if (IS_ERR(platform_device))
2316 return PTR_ERR(platform_device);
2317
2318 used = true;
2319 return 0;
2320 }
2321 EXPORT_SYMBOL_GPL(asus_wmi_register_driver);
2322
asus_wmi_unregister_driver(struct asus_wmi_driver * driver)2323 void asus_wmi_unregister_driver(struct asus_wmi_driver *driver)
2324 {
2325 platform_device_unregister(driver->platform_device);
2326 platform_driver_unregister(&driver->platform_driver);
2327 used = false;
2328 }
2329 EXPORT_SYMBOL_GPL(asus_wmi_unregister_driver);
2330
asus_wmi_init(void)2331 static int __init asus_wmi_init(void)
2332 {
2333 if (!wmi_has_guid(ASUS_WMI_MGMT_GUID)) {
2334 pr_info("Asus Management GUID not found\n");
2335 return -ENODEV;
2336 }
2337
2338 pr_info("ASUS WMI generic driver loaded\n");
2339 return 0;
2340 }
2341
asus_wmi_exit(void)2342 static void __exit asus_wmi_exit(void)
2343 {
2344 pr_info("ASUS WMI generic driver unloaded\n");
2345 }
2346
2347 module_init(asus_wmi_init);
2348 module_exit(asus_wmi_exit);
2349