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x86/mm: Add TLB purge to free pmd/pte page interfaces
[linux/fpc-iii.git] / drivers / platform / x86 / asus-wmi.c
blobed277685da1db3c5d2f22cf2a1f4fa3d29493d10
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
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
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_keymap;
283
284 return 0;
285
286 err_free_keymap:
287 sparse_keymap_free(asus->inputdev);
288 err_free_dev:
289 input_free_device(asus->inputdev);
290 return err;
291 }
292
293 static void asus_wmi_input_exit(struct asus_wmi *asus)
294 {
295 if (asus->inputdev) {
296 sparse_keymap_free(asus->inputdev);
297 input_unregister_device(asus->inputdev);
298 }
299
300 asus->inputdev = NULL;
301 }
302
303 static int asus_wmi_evaluate_method(u32 method_id, u32 arg0, u32 arg1,
304 u32 *retval)
305 {
306 struct bios_args args = {
307 .arg0 = arg0,
308 .arg1 = arg1,
309 };
310 struct acpi_buffer input = { (acpi_size) sizeof(args), &args };
311 struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
312 acpi_status status;
313 union acpi_object *obj;
314 u32 tmp = 0;
315
316 status = wmi_evaluate_method(ASUS_WMI_MGMT_GUID, 1, method_id,
317 &input, &output);
318
319 if (ACPI_FAILURE(status))
320 goto exit;
321
322 obj = (union acpi_object *)output.pointer;
323 if (obj && obj->type == ACPI_TYPE_INTEGER)
324 tmp = (u32) obj->integer.value;
325
326 if (retval)
327 *retval = tmp;
328
329 kfree(obj);
330
331 exit:
332 if (ACPI_FAILURE(status))
333 return -EIO;
334
335 if (tmp == ASUS_WMI_UNSUPPORTED_METHOD)
336 return -ENODEV;
337
338 return 0;
339 }
340
341 static int asus_wmi_evaluate_method_agfn(const struct acpi_buffer args)
342 {
343 struct acpi_buffer input;
344 u64 phys_addr;
345 u32 retval;
346 u32 status = -1;
347
348 /*
349 * Copy to dma capable address otherwise memory corruption occurs as
350 * bios has to be able to access it.
351 */
352 input.pointer = kzalloc(args.length, GFP_DMA | GFP_KERNEL);
353 input.length = args.length;
354 if (!input.pointer)
355 return -ENOMEM;
356 phys_addr = virt_to_phys(input.pointer);
357 memcpy(input.pointer, args.pointer, args.length);
358
359 status = asus_wmi_evaluate_method(ASUS_WMI_METHODID_AGFN,
360 phys_addr, 0, &retval);
361 if (!status)
362 memcpy(args.pointer, input.pointer, args.length);
363
364 kfree(input.pointer);
365 if (status)
366 return -ENXIO;
367
368 return retval;
369 }
370
371 static int asus_wmi_get_devstate(struct asus_wmi *asus, u32 dev_id, u32 *retval)
372 {
373 return asus_wmi_evaluate_method(asus->dsts_id, dev_id, 0, retval);
374 }
375
376 static int asus_wmi_set_devstate(u32 dev_id, u32 ctrl_param,
377 u32 *retval)
378 {
379 return asus_wmi_evaluate_method(ASUS_WMI_METHODID_DEVS, dev_id,
380 ctrl_param, retval);
381 }
382
383 /* Helper for special devices with magic return codes */
384 static int asus_wmi_get_devstate_bits(struct asus_wmi *asus,
385 u32 dev_id, u32 mask)
386 {
387 u32 retval = 0;
388 int err;
389
390 err = asus_wmi_get_devstate(asus, dev_id, &retval);
391
392 if (err < 0)
393 return err;
394
395 if (!(retval & ASUS_WMI_DSTS_PRESENCE_BIT))
396 return -ENODEV;
397
398 if (mask == ASUS_WMI_DSTS_STATUS_BIT) {
399 if (retval & ASUS_WMI_DSTS_UNKNOWN_BIT)
400 return -ENODEV;
401 }
402
403 return retval & mask;
404 }
405
406 static int asus_wmi_get_devstate_simple(struct asus_wmi *asus, u32 dev_id)
407 {
408 return asus_wmi_get_devstate_bits(asus, dev_id,
409 ASUS_WMI_DSTS_STATUS_BIT);
410 }
411
412 /*
413 * LEDs
414 */
415 /*
416 * These functions actually update the LED's, and are called from a
417 * workqueue. By doing this as separate work rather than when the LED
418 * subsystem asks, we avoid messing with the Asus ACPI stuff during a
419 * potentially bad time, such as a timer interrupt.
420 */
421 static void tpd_led_update(struct work_struct *work)
422 {
423 int ctrl_param;
424 struct asus_wmi *asus;
425
426 asus = container_of(work, struct asus_wmi, tpd_led_work);
427
428 ctrl_param = asus->tpd_led_wk;
429 asus_wmi_set_devstate(ASUS_WMI_DEVID_TOUCHPAD_LED, ctrl_param, NULL);
430 }
431
432 static void tpd_led_set(struct led_classdev *led_cdev,
433 enum led_brightness value)
434 {
435 struct asus_wmi *asus;
436
437 asus = container_of(led_cdev, struct asus_wmi, tpd_led);
438
439 asus->tpd_led_wk = !!value;
440 queue_work(asus->led_workqueue, &asus->tpd_led_work);
441 }
442
443 static int read_tpd_led_state(struct asus_wmi *asus)
444 {
445 return asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_TOUCHPAD_LED);
446 }
447
448 static enum led_brightness tpd_led_get(struct led_classdev *led_cdev)
449 {
450 struct asus_wmi *asus;
451
452 asus = container_of(led_cdev, struct asus_wmi, tpd_led);
453
454 return read_tpd_led_state(asus);
455 }
456
457 static void kbd_led_update(struct work_struct *work)
458 {
459 int ctrl_param = 0;
460 struct asus_wmi *asus;
461
462 asus = container_of(work, struct asus_wmi, kbd_led_work);
463
464 /*
465 * bits 0-2: level
466 * bit 7: light on/off
467 */
468 if (asus->kbd_led_wk > 0)
469 ctrl_param = 0x80 | (asus->kbd_led_wk & 0x7F);
470
471 asus_wmi_set_devstate(ASUS_WMI_DEVID_KBD_BACKLIGHT, ctrl_param, NULL);
472 }
473
474 static int kbd_led_read(struct asus_wmi *asus, int *level, int *env)
475 {
476 int retval;
477
478 /*
479 * bits 0-2: level
480 * bit 7: light on/off
481 * bit 8-10: environment (0: dark, 1: normal, 2: light)
482 * bit 17: status unknown
483 */
484 retval = asus_wmi_get_devstate_bits(asus, ASUS_WMI_DEVID_KBD_BACKLIGHT,
485 0xFFFF);
486
487 /* Unknown status is considered as off */
488 if (retval == 0x8000)
489 retval = 0;
490
491 if (retval >= 0) {
492 if (level)
493 *level = retval & 0x7F;
494 if (env)
495 *env = (retval >> 8) & 0x7F;
496 retval = 0;
497 }
498
499 return retval;
500 }
501
502 static void kbd_led_set(struct led_classdev *led_cdev,
503 enum led_brightness value)
504 {
505 struct asus_wmi *asus;
506
507 asus = container_of(led_cdev, struct asus_wmi, kbd_led);
508
509 if (value > asus->kbd_led.max_brightness)
510 value = asus->kbd_led.max_brightness;
511 else if (value < 0)
512 value = 0;
513
514 asus->kbd_led_wk = value;
515 queue_work(asus->led_workqueue, &asus->kbd_led_work);
516 }
517
518 static enum led_brightness kbd_led_get(struct led_classdev *led_cdev)
519 {
520 struct asus_wmi *asus;
521 int retval, value;
522
523 asus = container_of(led_cdev, struct asus_wmi, kbd_led);
524
525 retval = kbd_led_read(asus, &value, NULL);
526
527 if (retval < 0)
528 return retval;
529
530 return value;
531 }
532
533 static int wlan_led_unknown_state(struct asus_wmi *asus)
534 {
535 u32 result;
536
537 asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_WIRELESS_LED, &result);
538
539 return result & ASUS_WMI_DSTS_UNKNOWN_BIT;
540 }
541
542 static int wlan_led_presence(struct asus_wmi *asus)
543 {
544 u32 result;
545
546 asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_WIRELESS_LED, &result);
547
548 return result & ASUS_WMI_DSTS_PRESENCE_BIT;
549 }
550
551 static void wlan_led_update(struct work_struct *work)
552 {
553 int ctrl_param;
554 struct asus_wmi *asus;
555
556 asus = container_of(work, struct asus_wmi, wlan_led_work);
557
558 ctrl_param = asus->wlan_led_wk;
559 asus_wmi_set_devstate(ASUS_WMI_DEVID_WIRELESS_LED, ctrl_param, NULL);
560 }
561
562 static void wlan_led_set(struct led_classdev *led_cdev,
563 enum led_brightness value)
564 {
565 struct asus_wmi *asus;
566
567 asus = container_of(led_cdev, struct asus_wmi, wlan_led);
568
569 asus->wlan_led_wk = !!value;
570 queue_work(asus->led_workqueue, &asus->wlan_led_work);
571 }
572
573 static enum led_brightness wlan_led_get(struct led_classdev *led_cdev)
574 {
575 struct asus_wmi *asus;
576 u32 result;
577
578 asus = container_of(led_cdev, struct asus_wmi, wlan_led);
579 asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_WIRELESS_LED, &result);
580
581 return result & ASUS_WMI_DSTS_BRIGHTNESS_MASK;
582 }
583
584 static void asus_wmi_led_exit(struct asus_wmi *asus)
585 {
586 if (!IS_ERR_OR_NULL(asus->kbd_led.dev))
587 led_classdev_unregister(&asus->kbd_led);
588 if (!IS_ERR_OR_NULL(asus->tpd_led.dev))
589 led_classdev_unregister(&asus->tpd_led);
590 if (!IS_ERR_OR_NULL(asus->wlan_led.dev))
591 led_classdev_unregister(&asus->wlan_led);
592 if (asus->led_workqueue)
593 destroy_workqueue(asus->led_workqueue);
594 }
595
596 static int asus_wmi_led_init(struct asus_wmi *asus)
597 {
598 int rv = 0, led_val;
599
600 asus->led_workqueue = create_singlethread_workqueue("led_workqueue");
601 if (!asus->led_workqueue)
602 return -ENOMEM;
603
604 if (read_tpd_led_state(asus) >= 0) {
605 INIT_WORK(&asus->tpd_led_work, tpd_led_update);
606
607 asus->tpd_led.name = "asus::touchpad";
608 asus->tpd_led.brightness_set = tpd_led_set;
609 asus->tpd_led.brightness_get = tpd_led_get;
610 asus->tpd_led.max_brightness = 1;
611
612 rv = led_classdev_register(&asus->platform_device->dev,
613 &asus->tpd_led);
614 if (rv)
615 goto error;
616 }
617
618 led_val = kbd_led_read(asus, NULL, NULL);
619 if (led_val >= 0) {
620 INIT_WORK(&asus->kbd_led_work, kbd_led_update);
621
622 asus->kbd_led_wk = led_val;
623 asus->kbd_led.name = "asus::kbd_backlight";
624 asus->kbd_led.brightness_set = kbd_led_set;
625 asus->kbd_led.brightness_get = kbd_led_get;
626 asus->kbd_led.max_brightness = 3;
627
628 rv = led_classdev_register(&asus->platform_device->dev,
629 &asus->kbd_led);
630 if (rv)
631 goto error;
632 }
633
634 if (wlan_led_presence(asus) && (asus->driver->quirks->wapf > 0)) {
635 INIT_WORK(&asus->wlan_led_work, wlan_led_update);
636
637 asus->wlan_led.name = "asus::wlan";
638 asus->wlan_led.brightness_set = wlan_led_set;
639 if (!wlan_led_unknown_state(asus))
640 asus->wlan_led.brightness_get = wlan_led_get;
641 asus->wlan_led.flags = LED_CORE_SUSPENDRESUME;
642 asus->wlan_led.max_brightness = 1;
643 asus->wlan_led.default_trigger = "asus-wlan";
644
645 rv = led_classdev_register(&asus->platform_device->dev,
646 &asus->wlan_led);
647 }
648
649 error:
650 if (rv)
651 asus_wmi_led_exit(asus);
652
653 return rv;
654 }
655
656
657 /*
658 * PCI hotplug (for wlan rfkill)
659 */
660 static bool asus_wlan_rfkill_blocked(struct asus_wmi *asus)
661 {
662 int result = asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WLAN);
663
664 if (result < 0)
665 return false;
666 return !result;
667 }
668
669 static void asus_rfkill_hotplug(struct asus_wmi *asus)
670 {
671 struct pci_dev *dev;
672 struct pci_bus *bus;
673 bool blocked;
674 bool absent;
675 u32 l;
676
677 mutex_lock(&asus->wmi_lock);
678 blocked = asus_wlan_rfkill_blocked(asus);
679 mutex_unlock(&asus->wmi_lock);
680
681 mutex_lock(&asus->hotplug_lock);
682 pci_lock_rescan_remove();
683
684 if (asus->wlan.rfkill)
685 rfkill_set_sw_state(asus->wlan.rfkill, blocked);
686
687 if (asus->hotplug_slot) {
688 bus = pci_find_bus(0, 1);
689 if (!bus) {
690 pr_warn("Unable to find PCI bus 1?\n");
691 goto out_unlock;
692 }
693
694 if (pci_bus_read_config_dword(bus, 0, PCI_VENDOR_ID, &l)) {
695 pr_err("Unable to read PCI config space?\n");
696 goto out_unlock;
697 }
698 absent = (l == 0xffffffff);
699
700 if (blocked != absent) {
701 pr_warn("BIOS says wireless lan is %s, "
702 "but the pci device is %s\n",
703 blocked ? "blocked" : "unblocked",
704 absent ? "absent" : "present");
705 pr_warn("skipped wireless hotplug as probably "
706 "inappropriate for this model\n");
707 goto out_unlock;
708 }
709
710 if (!blocked) {
711 dev = pci_get_slot(bus, 0);
712 if (dev) {
713 /* Device already present */
714 pci_dev_put(dev);
715 goto out_unlock;
716 }
717 dev = pci_scan_single_device(bus, 0);
718 if (dev) {
719 pci_bus_assign_resources(bus);
720 pci_bus_add_device(dev);
721 }
722 } else {
723 dev = pci_get_slot(bus, 0);
724 if (dev) {
725 pci_stop_and_remove_bus_device(dev);
726 pci_dev_put(dev);
727 }
728 }
729 }
730
731 out_unlock:
732 pci_unlock_rescan_remove();
733 mutex_unlock(&asus->hotplug_lock);
734 }
735
736 static void asus_rfkill_notify(acpi_handle handle, u32 event, void *data)
737 {
738 struct asus_wmi *asus = data;
739
740 if (event != ACPI_NOTIFY_BUS_CHECK)
741 return;
742
743 /*
744 * We can't call directly asus_rfkill_hotplug because most
745 * of the time WMBC is still being executed and not reetrant.
746 * There is currently no way to tell ACPICA that we want this
747 * method to be serialized, we schedule a asus_rfkill_hotplug
748 * call later, in a safer context.
749 */
750 queue_work(asus->hotplug_workqueue, &asus->hotplug_work);
751 }
752
753 static int asus_register_rfkill_notifier(struct asus_wmi *asus, char *node)
754 {
755 acpi_status status;
756 acpi_handle handle;
757
758 status = acpi_get_handle(NULL, node, &handle);
759
760 if (ACPI_SUCCESS(status)) {
761 status = acpi_install_notify_handler(handle,
762 ACPI_SYSTEM_NOTIFY,
763 asus_rfkill_notify, asus);
764 if (ACPI_FAILURE(status))
765 pr_warn("Failed to register notify on %s\n", node);
766 } else
767 return -ENODEV;
768
769 return 0;
770 }
771
772 static void asus_unregister_rfkill_notifier(struct asus_wmi *asus, char *node)
773 {
774 acpi_status status = AE_OK;
775 acpi_handle handle;
776
777 status = acpi_get_handle(NULL, node, &handle);
778
779 if (ACPI_SUCCESS(status)) {
780 status = acpi_remove_notify_handler(handle,
781 ACPI_SYSTEM_NOTIFY,
782 asus_rfkill_notify);
783 if (ACPI_FAILURE(status))
784 pr_err("Error removing rfkill notify handler %s\n",
785 node);
786 }
787 }
788
789 static int asus_get_adapter_status(struct hotplug_slot *hotplug_slot,
790 u8 *value)
791 {
792 struct asus_wmi *asus = hotplug_slot->private;
793 int result = asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WLAN);
794
795 if (result < 0)
796 return result;
797
798 *value = !!result;
799 return 0;
800 }
801
802 static void asus_cleanup_pci_hotplug(struct hotplug_slot *hotplug_slot)
803 {
804 kfree(hotplug_slot->info);
805 kfree(hotplug_slot);
806 }
807
808 static struct hotplug_slot_ops asus_hotplug_slot_ops = {
809 .owner = THIS_MODULE,
810 .get_adapter_status = asus_get_adapter_status,
811 .get_power_status = asus_get_adapter_status,
812 };
813
814 static void asus_hotplug_work(struct work_struct *work)
815 {
816 struct asus_wmi *asus;
817
818 asus = container_of(work, struct asus_wmi, hotplug_work);
819 asus_rfkill_hotplug(asus);
820 }
821
822 static int asus_setup_pci_hotplug(struct asus_wmi *asus)
823 {
824 int ret = -ENOMEM;
825 struct pci_bus *bus = pci_find_bus(0, 1);
826
827 if (!bus) {
828 pr_err("Unable to find wifi PCI bus\n");
829 return -ENODEV;
830 }
831
832 asus->hotplug_workqueue =
833 create_singlethread_workqueue("hotplug_workqueue");
834 if (!asus->hotplug_workqueue)
835 goto error_workqueue;
836
837 INIT_WORK(&asus->hotplug_work, asus_hotplug_work);
838
839 asus->hotplug_slot = kzalloc(sizeof(struct hotplug_slot), GFP_KERNEL);
840 if (!asus->hotplug_slot)
841 goto error_slot;
842
843 asus->hotplug_slot->info = kzalloc(sizeof(struct hotplug_slot_info),
844 GFP_KERNEL);
845 if (!asus->hotplug_slot->info)
846 goto error_info;
847
848 asus->hotplug_slot->private = asus;
849 asus->hotplug_slot->release = &asus_cleanup_pci_hotplug;
850 asus->hotplug_slot->ops = &asus_hotplug_slot_ops;
851 asus_get_adapter_status(asus->hotplug_slot,
852 &asus->hotplug_slot->info->adapter_status);
853
854 ret = pci_hp_register(asus->hotplug_slot, bus, 0, "asus-wifi");
855 if (ret) {
856 pr_err("Unable to register hotplug slot - %d\n", ret);
857 goto error_register;
858 }
859
860 return 0;
861
862 error_register:
863 kfree(asus->hotplug_slot->info);
864 error_info:
865 kfree(asus->hotplug_slot);
866 asus->hotplug_slot = NULL;
867 error_slot:
868 destroy_workqueue(asus->hotplug_workqueue);
869 error_workqueue:
870 return ret;
871 }
872
873 /*
874 * Rfkill devices
875 */
876 static int asus_rfkill_set(void *data, bool blocked)
877 {
878 struct asus_rfkill *priv = data;
879 u32 ctrl_param = !blocked;
880 u32 dev_id = priv->dev_id;
881
882 /*
883 * If the user bit is set, BIOS can't set and record the wlan status,
884 * it will report the value read from id ASUS_WMI_DEVID_WLAN_LED
885 * while we query the wlan status through WMI(ASUS_WMI_DEVID_WLAN).
886 * So, we have to record wlan status in id ASUS_WMI_DEVID_WLAN_LED
887 * while setting the wlan status through WMI.
888 * This is also the behavior that windows app will do.
889 */
890 if ((dev_id == ASUS_WMI_DEVID_WLAN) &&
891 priv->asus->driver->wlan_ctrl_by_user)
892 dev_id = ASUS_WMI_DEVID_WLAN_LED;
893
894 return asus_wmi_set_devstate(dev_id, ctrl_param, NULL);
895 }
896
897 static void asus_rfkill_query(struct rfkill *rfkill, void *data)
898 {
899 struct asus_rfkill *priv = data;
900 int result;
901
902 result = asus_wmi_get_devstate_simple(priv->asus, priv->dev_id);
903
904 if (result < 0)
905 return;
906
907 rfkill_set_sw_state(priv->rfkill, !result);
908 }
909
910 static int asus_rfkill_wlan_set(void *data, bool blocked)
911 {
912 struct asus_rfkill *priv = data;
913 struct asus_wmi *asus = priv->asus;
914 int ret;
915
916 /*
917 * This handler is enabled only if hotplug is enabled.
918 * In this case, the asus_wmi_set_devstate() will
919 * trigger a wmi notification and we need to wait
920 * this call to finish before being able to call
921 * any wmi method
922 */
923 mutex_lock(&asus->wmi_lock);
924 ret = asus_rfkill_set(data, blocked);
925 mutex_unlock(&asus->wmi_lock);
926 return ret;
927 }
928
929 static const struct rfkill_ops asus_rfkill_wlan_ops = {
930 .set_block = asus_rfkill_wlan_set,
931 .query = asus_rfkill_query,
932 };
933
934 static const struct rfkill_ops asus_rfkill_ops = {
935 .set_block = asus_rfkill_set,
936 .query = asus_rfkill_query,
937 };
938
939 static int asus_new_rfkill(struct asus_wmi *asus,
940 struct asus_rfkill *arfkill,
941 const char *name, enum rfkill_type type, int dev_id)
942 {
943 int result = asus_wmi_get_devstate_simple(asus, dev_id);
944 struct rfkill **rfkill = &arfkill->rfkill;
945
946 if (result < 0)
947 return result;
948
949 arfkill->dev_id = dev_id;
950 arfkill->asus = asus;
951
952 if (dev_id == ASUS_WMI_DEVID_WLAN &&
953 asus->driver->quirks->hotplug_wireless)
954 *rfkill = rfkill_alloc(name, &asus->platform_device->dev, type,
955 &asus_rfkill_wlan_ops, arfkill);
956 else
957 *rfkill = rfkill_alloc(name, &asus->platform_device->dev, type,
958 &asus_rfkill_ops, arfkill);
959
960 if (!*rfkill)
961 return -EINVAL;
962
963 if ((dev_id == ASUS_WMI_DEVID_WLAN) &&
964 (asus->driver->quirks->wapf > 0))
965 rfkill_set_led_trigger_name(*rfkill, "asus-wlan");
966
967 rfkill_init_sw_state(*rfkill, !result);
968 result = rfkill_register(*rfkill);
969 if (result) {
970 rfkill_destroy(*rfkill);
971 *rfkill = NULL;
972 return result;
973 }
974 return 0;
975 }
976
977 static void asus_wmi_rfkill_exit(struct asus_wmi *asus)
978 {
979 if (asus->driver->wlan_ctrl_by_user && ashs_present())
980 return;
981
982 asus_unregister_rfkill_notifier(asus, "\\_SB.PCI0.P0P5");
983 asus_unregister_rfkill_notifier(asus, "\\_SB.PCI0.P0P6");
984 asus_unregister_rfkill_notifier(asus, "\\_SB.PCI0.P0P7");
985 if (asus->wlan.rfkill) {
986 rfkill_unregister(asus->wlan.rfkill);
987 rfkill_destroy(asus->wlan.rfkill);
988 asus->wlan.rfkill = NULL;
989 }
990 /*
991 * Refresh pci hotplug in case the rfkill state was changed after
992 * asus_unregister_rfkill_notifier()
993 */
994 asus_rfkill_hotplug(asus);
995 if (asus->hotplug_slot)
996 pci_hp_deregister(asus->hotplug_slot);
997 if (asus->hotplug_workqueue)
998 destroy_workqueue(asus->hotplug_workqueue);
999
1000 if (asus->bluetooth.rfkill) {
1001 rfkill_unregister(asus->bluetooth.rfkill);
1002 rfkill_destroy(asus->bluetooth.rfkill);
1003 asus->bluetooth.rfkill = NULL;
1004 }
1005 if (asus->wimax.rfkill) {
1006 rfkill_unregister(asus->wimax.rfkill);
1007 rfkill_destroy(asus->wimax.rfkill);
1008 asus->wimax.rfkill = NULL;
1009 }
1010 if (asus->wwan3g.rfkill) {
1011 rfkill_unregister(asus->wwan3g.rfkill);
1012 rfkill_destroy(asus->wwan3g.rfkill);
1013 asus->wwan3g.rfkill = NULL;
1014 }
1015 if (asus->gps.rfkill) {
1016 rfkill_unregister(asus->gps.rfkill);
1017 rfkill_destroy(asus->gps.rfkill);
1018 asus->gps.rfkill = NULL;
1019 }
1020 if (asus->uwb.rfkill) {
1021 rfkill_unregister(asus->uwb.rfkill);
1022 rfkill_destroy(asus->uwb.rfkill);
1023 asus->uwb.rfkill = NULL;
1024 }
1025 }
1026
1027 static int asus_wmi_rfkill_init(struct asus_wmi *asus)
1028 {
1029 int result = 0;
1030
1031 mutex_init(&asus->hotplug_lock);
1032 mutex_init(&asus->wmi_lock);
1033
1034 result = asus_new_rfkill(asus, &asus->wlan, "asus-wlan",
1035 RFKILL_TYPE_WLAN, ASUS_WMI_DEVID_WLAN);
1036
1037 if (result && result != -ENODEV)
1038 goto exit;
1039
1040 result = asus_new_rfkill(asus, &asus->bluetooth,
1041 "asus-bluetooth", RFKILL_TYPE_BLUETOOTH,
1042 ASUS_WMI_DEVID_BLUETOOTH);
1043
1044 if (result && result != -ENODEV)
1045 goto exit;
1046
1047 result = asus_new_rfkill(asus, &asus->wimax, "asus-wimax",
1048 RFKILL_TYPE_WIMAX, ASUS_WMI_DEVID_WIMAX);
1049
1050 if (result && result != -ENODEV)
1051 goto exit;
1052
1053 result = asus_new_rfkill(asus, &asus->wwan3g, "asus-wwan3g",
1054 RFKILL_TYPE_WWAN, ASUS_WMI_DEVID_WWAN3G);
1055
1056 if (result && result != -ENODEV)
1057 goto exit;
1058
1059 result = asus_new_rfkill(asus, &asus->gps, "asus-gps",
1060 RFKILL_TYPE_GPS, ASUS_WMI_DEVID_GPS);
1061
1062 if (result && result != -ENODEV)
1063 goto exit;
1064
1065 result = asus_new_rfkill(asus, &asus->uwb, "asus-uwb",
1066 RFKILL_TYPE_UWB, ASUS_WMI_DEVID_UWB);
1067
1068 if (result && result != -ENODEV)
1069 goto exit;
1070
1071 if (!asus->driver->quirks->hotplug_wireless)
1072 goto exit;
1073
1074 result = asus_setup_pci_hotplug(asus);
1075 /*
1076 * If we get -EBUSY then something else is handling the PCI hotplug -
1077 * don't fail in this case
1078 */
1079 if (result == -EBUSY)
1080 result = 0;
1081
1082 asus_register_rfkill_notifier(asus, "\\_SB.PCI0.P0P5");
1083 asus_register_rfkill_notifier(asus, "\\_SB.PCI0.P0P6");
1084 asus_register_rfkill_notifier(asus, "\\_SB.PCI0.P0P7");
1085 /*
1086 * Refresh pci hotplug in case the rfkill state was changed during
1087 * setup.
1088 */
1089 asus_rfkill_hotplug(asus);
1090
1091 exit:
1092 if (result && result != -ENODEV)
1093 asus_wmi_rfkill_exit(asus);
1094
1095 if (result == -ENODEV)
1096 result = 0;
1097
1098 return result;
1099 }
1100
1101 static void asus_wmi_set_xusb2pr(struct asus_wmi *asus)
1102 {
1103 struct pci_dev *xhci_pdev;
1104 u32 orig_ports_available;
1105 u32 ports_available = asus->driver->quirks->xusb2pr;
1106
1107 xhci_pdev = pci_get_device(PCI_VENDOR_ID_INTEL,
1108 PCI_DEVICE_ID_INTEL_LYNXPOINT_LP_XHCI,
1109 NULL);
1110
1111 if (!xhci_pdev)
1112 return;
1113
1114 pci_read_config_dword(xhci_pdev, USB_INTEL_XUSB2PR,
1115 &orig_ports_available);
1116
1117 pci_write_config_dword(xhci_pdev, USB_INTEL_XUSB2PR,
1118 cpu_to_le32(ports_available));
1119
1120 pr_info("set USB_INTEL_XUSB2PR old: 0x%04x, new: 0x%04x\n",
1121 orig_ports_available, ports_available);
1122 }
1123
1124 /*
1125 * Some devices dont support or have borcken get_als method
1126 * but still support set method.
1127 */
1128 static void asus_wmi_set_als(void)
1129 {
1130 asus_wmi_set_devstate(ASUS_WMI_DEVID_ALS_ENABLE, 1, NULL);
1131 }
1132
1133 /*
1134 * Hwmon device
1135 */
1136 static int asus_hwmon_agfn_fan_speed_read(struct asus_wmi *asus, int fan,
1137 int *speed)
1138 {
1139 struct fan_args args = {
1140 .agfn.len = sizeof(args),
1141 .agfn.mfun = ASUS_FAN_MFUN,
1142 .agfn.sfun = ASUS_FAN_SFUN_READ,
1143 .fan = fan,
1144 .speed = 0,
1145 };
1146 struct acpi_buffer input = { (acpi_size) sizeof(args), &args };
1147 int status;
1148
1149 if (fan != 1)
1150 return -EINVAL;
1151
1152 status = asus_wmi_evaluate_method_agfn(input);
1153
1154 if (status || args.agfn.err)
1155 return -ENXIO;
1156
1157 if (speed)
1158 *speed = args.speed;
1159
1160 return 0;
1161 }
1162
1163 static int asus_hwmon_agfn_fan_speed_write(struct asus_wmi *asus, int fan,
1164 int *speed)
1165 {
1166 struct fan_args args = {
1167 .agfn.len = sizeof(args),
1168 .agfn.mfun = ASUS_FAN_MFUN,
1169 .agfn.sfun = ASUS_FAN_SFUN_WRITE,
1170 .fan = fan,
1171 .speed = speed ? *speed : 0,
1172 };
1173 struct acpi_buffer input = { (acpi_size) sizeof(args), &args };
1174 int status;
1175
1176 /* 1: for setting 1st fan's speed 0: setting auto mode */
1177 if (fan != 1 && fan != 0)
1178 return -EINVAL;
1179
1180 status = asus_wmi_evaluate_method_agfn(input);
1181
1182 if (status || args.agfn.err)
1183 return -ENXIO;
1184
1185 if (speed && fan == 1)
1186 asus->asus_hwmon_pwm = *speed;
1187
1188 return 0;
1189 }
1190
1191 /*
1192 * Check if we can read the speed of one fan. If true we assume we can also
1193 * control it.
1194 */
1195 static int asus_hwmon_get_fan_number(struct asus_wmi *asus, int *num_fans)
1196 {
1197 int status;
1198 int speed = 0;
1199
1200 *num_fans = 0;
1201
1202 status = asus_hwmon_agfn_fan_speed_read(asus, 1, &speed);
1203 if (!status)
1204 *num_fans = 1;
1205
1206 return 0;
1207 }
1208
1209 static int asus_hwmon_fan_set_auto(struct asus_wmi *asus)
1210 {
1211 int status;
1212
1213 status = asus_hwmon_agfn_fan_speed_write(asus, 0, NULL);
1214 if (status)
1215 return -ENXIO;
1216
1217 asus->asus_hwmon_fan_manual_mode = false;
1218
1219 return 0;
1220 }
1221
1222 static int asus_hwmon_fan_rpm_show(struct device *dev, int fan)
1223 {
1224 struct asus_wmi *asus = dev_get_drvdata(dev);
1225 int value;
1226 int ret;
1227
1228 /* no speed readable on manual mode */
1229 if (asus->asus_hwmon_fan_manual_mode)
1230 return -ENXIO;
1231
1232 ret = asus_hwmon_agfn_fan_speed_read(asus, fan+1, &value);
1233 if (ret) {
1234 pr_warn("reading fan speed failed: %d\n", ret);
1235 return -ENXIO;
1236 }
1237
1238 return value;
1239 }
1240
1241 static void asus_hwmon_pwm_show(struct asus_wmi *asus, int fan, int *value)
1242 {
1243 int err;
1244
1245 if (asus->asus_hwmon_pwm >= 0) {
1246 *value = asus->asus_hwmon_pwm;
1247 return;
1248 }
1249
1250 err = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_FAN_CTRL, value);
1251 if (err < 0)
1252 return;
1253
1254 *value &= 0xFF;
1255
1256 if (*value == 1) /* Low Speed */
1257 *value = 85;
1258 else if (*value == 2)
1259 *value = 170;
1260 else if (*value == 3)
1261 *value = 255;
1262 else if (*value) {
1263 pr_err("Unknown fan speed %#x\n", *value);
1264 *value = -1;
1265 }
1266 }
1267
1268 static ssize_t pwm1_show(struct device *dev,
1269 struct device_attribute *attr,
1270 char *buf)
1271 {
1272 struct asus_wmi *asus = dev_get_drvdata(dev);
1273 int value;
1274
1275 asus_hwmon_pwm_show(asus, 0, &value);
1276
1277 return sprintf(buf, "%d\n", value);
1278 }
1279
1280 static ssize_t pwm1_store(struct device *dev,
1281 struct device_attribute *attr,
1282 const char *buf, size_t count) {
1283 struct asus_wmi *asus = dev_get_drvdata(dev);
1284 int value;
1285 int state;
1286 int ret;
1287
1288 ret = kstrtouint(buf, 10, &value);
1289
1290 if (ret)
1291 return ret;
1292
1293 value = clamp(value, 0, 255);
1294
1295 state = asus_hwmon_agfn_fan_speed_write(asus, 1, &value);
1296 if (state)
1297 pr_warn("Setting fan speed failed: %d\n", state);
1298 else
1299 asus->asus_hwmon_fan_manual_mode = true;
1300
1301 return count;
1302 }
1303
1304 static ssize_t fan1_input_show(struct device *dev,
1305 struct device_attribute *attr,
1306 char *buf)
1307 {
1308 int value = asus_hwmon_fan_rpm_show(dev, 0);
1309
1310 return sprintf(buf, "%d\n", value < 0 ? -1 : value*100);
1311
1312 }
1313
1314 static ssize_t pwm1_enable_show(struct device *dev,
1315 struct device_attribute *attr,
1316 char *buf)
1317 {
1318 struct asus_wmi *asus = dev_get_drvdata(dev);
1319
1320 if (asus->asus_hwmon_fan_manual_mode)
1321 return sprintf(buf, "%d\n", ASUS_FAN_CTRL_MANUAL);
1322
1323 return sprintf(buf, "%d\n", ASUS_FAN_CTRL_AUTO);
1324 }
1325
1326 static ssize_t pwm1_enable_store(struct device *dev,
1327 struct device_attribute *attr,
1328 const char *buf, size_t count)
1329 {
1330 struct asus_wmi *asus = dev_get_drvdata(dev);
1331 int status = 0;
1332 int state;
1333 int ret;
1334
1335 ret = kstrtouint(buf, 10, &state);
1336
1337 if (ret)
1338 return ret;
1339
1340 if (state == ASUS_FAN_CTRL_MANUAL)
1341 asus->asus_hwmon_fan_manual_mode = true;
1342 else
1343 status = asus_hwmon_fan_set_auto(asus);
1344
1345 if (status)
1346 return status;
1347
1348 return count;
1349 }
1350
1351 static ssize_t fan1_label_show(struct device *dev,
1352 struct device_attribute *attr,
1353 char *buf)
1354 {
1355 return sprintf(buf, "%s\n", ASUS_FAN_DESC);
1356 }
1357
1358 static ssize_t asus_hwmon_temp1(struct device *dev,
1359 struct device_attribute *attr,
1360 char *buf)
1361 {
1362 struct asus_wmi *asus = dev_get_drvdata(dev);
1363 u32 value;
1364 int err;
1365
1366 err = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_THERMAL_CTRL, &value);
1367
1368 if (err < 0)
1369 return err;
1370
1371 value = DECI_KELVIN_TO_CELSIUS((value & 0xFFFF)) * 1000;
1372
1373 return sprintf(buf, "%d\n", value);
1374 }
1375
1376 /* Fan1 */
1377 static DEVICE_ATTR_RW(pwm1);
1378 static DEVICE_ATTR_RW(pwm1_enable);
1379 static DEVICE_ATTR_RO(fan1_input);
1380 static DEVICE_ATTR_RO(fan1_label);
1381
1382 /* Temperature */
1383 static DEVICE_ATTR(temp1_input, S_IRUGO, asus_hwmon_temp1, NULL);
1384
1385 static struct attribute *hwmon_attributes[] = {
1386 &dev_attr_pwm1.attr,
1387 &dev_attr_pwm1_enable.attr,
1388 &dev_attr_fan1_input.attr,
1389 &dev_attr_fan1_label.attr,
1390
1391 &dev_attr_temp1_input.attr,
1392 NULL
1393 };
1394
1395 static umode_t asus_hwmon_sysfs_is_visible(struct kobject *kobj,
1396 struct attribute *attr, int idx)
1397 {
1398 struct device *dev = container_of(kobj, struct device, kobj);
1399 struct platform_device *pdev = to_platform_device(dev->parent);
1400 struct asus_wmi *asus = platform_get_drvdata(pdev);
1401 int dev_id = -1;
1402 int fan_attr = -1;
1403 u32 value = ASUS_WMI_UNSUPPORTED_METHOD;
1404 bool ok = true;
1405
1406 if (attr == &dev_attr_pwm1.attr)
1407 dev_id = ASUS_WMI_DEVID_FAN_CTRL;
1408 else if (attr == &dev_attr_temp1_input.attr)
1409 dev_id = ASUS_WMI_DEVID_THERMAL_CTRL;
1410
1411
1412 if (attr == &dev_attr_fan1_input.attr
1413 || attr == &dev_attr_fan1_label.attr
1414 || attr == &dev_attr_pwm1.attr
1415 || attr == &dev_attr_pwm1_enable.attr) {
1416 fan_attr = 1;
1417 }
1418
1419 if (dev_id != -1) {
1420 int err = asus_wmi_get_devstate(asus, dev_id, &value);
1421
1422 if (err < 0 && fan_attr == -1)
1423 return 0; /* can't return negative here */
1424 }
1425
1426 if (dev_id == ASUS_WMI_DEVID_FAN_CTRL) {
1427 /*
1428 * We need to find a better way, probably using sfun,
1429 * bits or spec ...
1430 * Currently we disable it if:
1431 * - ASUS_WMI_UNSUPPORTED_METHOD is returned
1432 * - reverved bits are non-zero
1433 * - sfun and presence bit are not set
1434 */
1435 if (value == ASUS_WMI_UNSUPPORTED_METHOD || value & 0xFFF80000
1436 || (!asus->sfun && !(value & ASUS_WMI_DSTS_PRESENCE_BIT)))
1437 ok = false;
1438 else
1439 ok = fan_attr <= asus->asus_hwmon_num_fans;
1440 } else if (dev_id == ASUS_WMI_DEVID_THERMAL_CTRL) {
1441 /* If value is zero, something is clearly wrong */
1442 if (!value)
1443 ok = false;
1444 } else if (fan_attr <= asus->asus_hwmon_num_fans && fan_attr != -1) {
1445 ok = true;
1446 } else {
1447 ok = false;
1448 }
1449
1450 return ok ? attr->mode : 0;
1451 }
1452
1453 static struct attribute_group hwmon_attribute_group = {
1454 .is_visible = asus_hwmon_sysfs_is_visible,
1455 .attrs = hwmon_attributes
1456 };
1457 __ATTRIBUTE_GROUPS(hwmon_attribute);
1458
1459 static int asus_wmi_hwmon_init(struct asus_wmi *asus)
1460 {
1461 struct device *hwmon;
1462
1463 hwmon = hwmon_device_register_with_groups(&asus->platform_device->dev,
1464 "asus", asus,
1465 hwmon_attribute_groups);
1466 if (IS_ERR(hwmon)) {
1467 pr_err("Could not register asus hwmon device\n");
1468 return PTR_ERR(hwmon);
1469 }
1470 return 0;
1471 }
1472
1473 /*
1474 * Backlight
1475 */
1476 static int read_backlight_power(struct asus_wmi *asus)
1477 {
1478 int ret;
1479 if (asus->driver->quirks->store_backlight_power)
1480 ret = !asus->driver->panel_power;
1481 else
1482 ret = asus_wmi_get_devstate_simple(asus,
1483 ASUS_WMI_DEVID_BACKLIGHT);
1484
1485 if (ret < 0)
1486 return ret;
1487
1488 return ret ? FB_BLANK_UNBLANK : FB_BLANK_POWERDOWN;
1489 }
1490
1491 static int read_brightness_max(struct asus_wmi *asus)
1492 {
1493 u32 retval;
1494 int err;
1495
1496 err = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_BRIGHTNESS, &retval);
1497
1498 if (err < 0)
1499 return err;
1500
1501 retval = retval & ASUS_WMI_DSTS_MAX_BRIGTH_MASK;
1502 retval >>= 8;
1503
1504 if (!retval)
1505 return -ENODEV;
1506
1507 return retval;
1508 }
1509
1510 static int read_brightness(struct backlight_device *bd)
1511 {
1512 struct asus_wmi *asus = bl_get_data(bd);
1513 u32 retval;
1514 int err;
1515
1516 err = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_BRIGHTNESS, &retval);
1517
1518 if (err < 0)
1519 return err;
1520
1521 return retval & ASUS_WMI_DSTS_BRIGHTNESS_MASK;
1522 }
1523
1524 static u32 get_scalar_command(struct backlight_device *bd)
1525 {
1526 struct asus_wmi *asus = bl_get_data(bd);
1527 u32 ctrl_param = 0;
1528
1529 if ((asus->driver->brightness < bd->props.brightness) ||
1530 bd->props.brightness == bd->props.max_brightness)
1531 ctrl_param = 0x00008001;
1532 else if ((asus->driver->brightness > bd->props.brightness) ||
1533 bd->props.brightness == 0)
1534 ctrl_param = 0x00008000;
1535
1536 asus->driver->brightness = bd->props.brightness;
1537
1538 return ctrl_param;
1539 }
1540
1541 static int update_bl_status(struct backlight_device *bd)
1542 {
1543 struct asus_wmi *asus = bl_get_data(bd);
1544 u32 ctrl_param;
1545 int power, err = 0;
1546
1547 power = read_backlight_power(asus);
1548 if (power != -ENODEV && bd->props.power != power) {
1549 ctrl_param = !!(bd->props.power == FB_BLANK_UNBLANK);
1550 err = asus_wmi_set_devstate(ASUS_WMI_DEVID_BACKLIGHT,
1551 ctrl_param, NULL);
1552 if (asus->driver->quirks->store_backlight_power)
1553 asus->driver->panel_power = bd->props.power;
1554
1555 /* When using scalar brightness, updating the brightness
1556 * will mess with the backlight power */
1557 if (asus->driver->quirks->scalar_panel_brightness)
1558 return err;
1559 }
1560
1561 if (asus->driver->quirks->scalar_panel_brightness)
1562 ctrl_param = get_scalar_command(bd);
1563 else
1564 ctrl_param = bd->props.brightness;
1565
1566 err = asus_wmi_set_devstate(ASUS_WMI_DEVID_BRIGHTNESS,
1567 ctrl_param, NULL);
1568
1569 return err;
1570 }
1571
1572 static const struct backlight_ops asus_wmi_bl_ops = {
1573 .get_brightness = read_brightness,
1574 .update_status = update_bl_status,
1575 };
1576
1577 static int asus_wmi_backlight_notify(struct asus_wmi *asus, int code)
1578 {
1579 struct backlight_device *bd = asus->backlight_device;
1580 int old = bd->props.brightness;
1581 int new = old;
1582
1583 if (code >= NOTIFY_BRNUP_MIN && code <= NOTIFY_BRNUP_MAX)
1584 new = code - NOTIFY_BRNUP_MIN + 1;
1585 else if (code >= NOTIFY_BRNDOWN_MIN && code <= NOTIFY_BRNDOWN_MAX)
1586 new = code - NOTIFY_BRNDOWN_MIN;
1587
1588 bd->props.brightness = new;
1589 backlight_update_status(bd);
1590 backlight_force_update(bd, BACKLIGHT_UPDATE_HOTKEY);
1591
1592 return old;
1593 }
1594
1595 static int asus_wmi_backlight_init(struct asus_wmi *asus)
1596 {
1597 struct backlight_device *bd;
1598 struct backlight_properties props;
1599 int max;
1600 int power;
1601
1602 max = read_brightness_max(asus);
1603 if (max < 0)
1604 return max;
1605
1606 power = read_backlight_power(asus);
1607
1608 if (power == -ENODEV)
1609 power = FB_BLANK_UNBLANK;
1610 else if (power < 0)
1611 return power;
1612
1613 memset(&props, 0, sizeof(struct backlight_properties));
1614 props.type = BACKLIGHT_PLATFORM;
1615 props.max_brightness = max;
1616 bd = backlight_device_register(asus->driver->name,
1617 &asus->platform_device->dev, asus,
1618 &asus_wmi_bl_ops, &props);
1619 if (IS_ERR(bd)) {
1620 pr_err("Could not register backlight device\n");
1621 return PTR_ERR(bd);
1622 }
1623
1624 asus->backlight_device = bd;
1625
1626 if (asus->driver->quirks->store_backlight_power)
1627 asus->driver->panel_power = power;
1628
1629 bd->props.brightness = read_brightness(bd);
1630 bd->props.power = power;
1631 backlight_update_status(bd);
1632
1633 asus->driver->brightness = bd->props.brightness;
1634
1635 return 0;
1636 }
1637
1638 static void asus_wmi_backlight_exit(struct asus_wmi *asus)
1639 {
1640 backlight_device_unregister(asus->backlight_device);
1641
1642 asus->backlight_device = NULL;
1643 }
1644
1645 static int is_display_toggle(int code)
1646 {
1647 /* display toggle keys */
1648 if ((code >= 0x61 && code <= 0x67) ||
1649 (code >= 0x8c && code <= 0x93) ||
1650 (code >= 0xa0 && code <= 0xa7) ||
1651 (code >= 0xd0 && code <= 0xd5))
1652 return 1;
1653
1654 return 0;
1655 }
1656
1657 static void asus_wmi_notify(u32 value, void *context)
1658 {
1659 struct asus_wmi *asus = context;
1660 struct acpi_buffer response = { ACPI_ALLOCATE_BUFFER, NULL };
1661 union acpi_object *obj;
1662 acpi_status status;
1663 int code;
1664 int orig_code;
1665 unsigned int key_value = 1;
1666 bool autorelease = 1;
1667
1668 status = wmi_get_event_data(value, &response);
1669 if (status != AE_OK) {
1670 pr_err("bad event status 0x%x\n", status);
1671 return;
1672 }
1673
1674 obj = (union acpi_object *)response.pointer;
1675
1676 if (!obj || obj->type != ACPI_TYPE_INTEGER)
1677 goto exit;
1678
1679 code = obj->integer.value;
1680 orig_code = code;
1681
1682 if (asus->driver->key_filter) {
1683 asus->driver->key_filter(asus->driver, &code, &key_value,
1684 &autorelease);
1685 if (code == ASUS_WMI_KEY_IGNORE)
1686 goto exit;
1687 }
1688
1689 if (code >= NOTIFY_BRNUP_MIN && code <= NOTIFY_BRNUP_MAX)
1690 code = ASUS_WMI_BRN_UP;
1691 else if (code >= NOTIFY_BRNDOWN_MIN &&
1692 code <= NOTIFY_BRNDOWN_MAX)
1693 code = ASUS_WMI_BRN_DOWN;
1694
1695 if (code == ASUS_WMI_BRN_DOWN || code == ASUS_WMI_BRN_UP) {
1696 if (acpi_video_get_backlight_type() == acpi_backlight_vendor) {
1697 asus_wmi_backlight_notify(asus, orig_code);
1698 goto exit;
1699 }
1700 }
1701
1702 if (is_display_toggle(code) &&
1703 asus->driver->quirks->no_display_toggle)
1704 goto exit;
1705
1706 if (!sparse_keymap_report_event(asus->inputdev, code,
1707 key_value, autorelease))
1708 pr_info("Unknown key %x pressed\n", code);
1709
1710 exit:
1711 kfree(obj);
1712 }
1713
1714 /*
1715 * Sys helpers
1716 */
1717 static int parse_arg(const char *buf, unsigned long count, int *val)
1718 {
1719 if (!count)
1720 return 0;
1721 if (sscanf(buf, "%i", val) != 1)
1722 return -EINVAL;
1723 return count;
1724 }
1725
1726 static ssize_t store_sys_wmi(struct asus_wmi *asus, int devid,
1727 const char *buf, size_t count)
1728 {
1729 u32 retval;
1730 int rv, err, value;
1731
1732 value = asus_wmi_get_devstate_simple(asus, devid);
1733 if (value < 0)
1734 return value;
1735
1736 rv = parse_arg(buf, count, &value);
1737 err = asus_wmi_set_devstate(devid, value, &retval);
1738
1739 if (err < 0)
1740 return err;
1741
1742 return rv;
1743 }
1744
1745 static ssize_t show_sys_wmi(struct asus_wmi *asus, int devid, char *buf)
1746 {
1747 int value = asus_wmi_get_devstate_simple(asus, devid);
1748
1749 if (value < 0)
1750 return value;
1751
1752 return sprintf(buf, "%d\n", value);
1753 }
1754
1755 #define ASUS_WMI_CREATE_DEVICE_ATTR(_name, _mode, _cm) \
1756 static ssize_t show_##_name(struct device *dev, \
1757 struct device_attribute *attr, \
1758 char *buf) \
1759 { \
1760 struct asus_wmi *asus = dev_get_drvdata(dev); \
1761 \
1762 return show_sys_wmi(asus, _cm, buf); \
1763 } \
1764 static ssize_t store_##_name(struct device *dev, \
1765 struct device_attribute *attr, \
1766 const char *buf, size_t count) \
1767 { \
1768 struct asus_wmi *asus = dev_get_drvdata(dev); \
1769 \
1770 return store_sys_wmi(asus, _cm, buf, count); \
1771 } \
1772 static struct device_attribute dev_attr_##_name = { \
1773 .attr = { \
1774 .name = __stringify(_name), \
1775 .mode = _mode }, \
1776 .show = show_##_name, \
1777 .store = store_##_name, \
1778 }
1779
1780 ASUS_WMI_CREATE_DEVICE_ATTR(touchpad, 0644, ASUS_WMI_DEVID_TOUCHPAD);
1781 ASUS_WMI_CREATE_DEVICE_ATTR(camera, 0644, ASUS_WMI_DEVID_CAMERA);
1782 ASUS_WMI_CREATE_DEVICE_ATTR(cardr, 0644, ASUS_WMI_DEVID_CARDREADER);
1783 ASUS_WMI_CREATE_DEVICE_ATTR(lid_resume, 0644, ASUS_WMI_DEVID_LID_RESUME);
1784 ASUS_WMI_CREATE_DEVICE_ATTR(als_enable, 0644, ASUS_WMI_DEVID_ALS_ENABLE);
1785
1786 static ssize_t store_cpufv(struct device *dev, struct device_attribute *attr,
1787 const char *buf, size_t count)
1788 {
1789 int value, rv;
1790
1791 if (!count || sscanf(buf, "%i", &value) != 1)
1792 return -EINVAL;
1793 if (value < 0 || value > 2)
1794 return -EINVAL;
1795
1796 rv = asus_wmi_evaluate_method(ASUS_WMI_METHODID_CFVS, value, 0, NULL);
1797 if (rv < 0)
1798 return rv;
1799
1800 return count;
1801 }
1802
1803 static DEVICE_ATTR(cpufv, S_IRUGO | S_IWUSR, NULL, store_cpufv);
1804
1805 static struct attribute *platform_attributes[] = {
1806 &dev_attr_cpufv.attr,
1807 &dev_attr_camera.attr,
1808 &dev_attr_cardr.attr,
1809 &dev_attr_touchpad.attr,
1810 &dev_attr_lid_resume.attr,
1811 &dev_attr_als_enable.attr,
1812 NULL
1813 };
1814
1815 static umode_t asus_sysfs_is_visible(struct kobject *kobj,
1816 struct attribute *attr, int idx)
1817 {
1818 struct device *dev = container_of(kobj, struct device, kobj);
1819 struct platform_device *pdev = to_platform_device(dev);
1820 struct asus_wmi *asus = platform_get_drvdata(pdev);
1821 bool ok = true;
1822 int devid = -1;
1823
1824 if (attr == &dev_attr_camera.attr)
1825 devid = ASUS_WMI_DEVID_CAMERA;
1826 else if (attr == &dev_attr_cardr.attr)
1827 devid = ASUS_WMI_DEVID_CARDREADER;
1828 else if (attr == &dev_attr_touchpad.attr)
1829 devid = ASUS_WMI_DEVID_TOUCHPAD;
1830 else if (attr == &dev_attr_lid_resume.attr)
1831 devid = ASUS_WMI_DEVID_LID_RESUME;
1832 else if (attr == &dev_attr_als_enable.attr)
1833 devid = ASUS_WMI_DEVID_ALS_ENABLE;
1834
1835 if (devid != -1)
1836 ok = !(asus_wmi_get_devstate_simple(asus, devid) < 0);
1837
1838 return ok ? attr->mode : 0;
1839 }
1840
1841 static struct attribute_group platform_attribute_group = {
1842 .is_visible = asus_sysfs_is_visible,
1843 .attrs = platform_attributes
1844 };
1845
1846 static void asus_wmi_sysfs_exit(struct platform_device *device)
1847 {
1848 sysfs_remove_group(&device->dev.kobj, &platform_attribute_group);
1849 }
1850
1851 static int asus_wmi_sysfs_init(struct platform_device *device)
1852 {
1853 return sysfs_create_group(&device->dev.kobj, &platform_attribute_group);
1854 }
1855
1856 /*
1857 * Platform device
1858 */
1859 static int asus_wmi_platform_init(struct asus_wmi *asus)
1860 {
1861 int rv;
1862
1863 /* INIT enable hotkeys on some models */
1864 if (!asus_wmi_evaluate_method(ASUS_WMI_METHODID_INIT, 0, 0, &rv))
1865 pr_info("Initialization: %#x\n", rv);
1866
1867 /* We don't know yet what to do with this version... */
1868 if (!asus_wmi_evaluate_method(ASUS_WMI_METHODID_SPEC, 0, 0x9, &rv)) {
1869 pr_info("BIOS WMI version: %d.%d\n", rv >> 16, rv & 0xFF);
1870 asus->spec = rv;
1871 }
1872
1873 /*
1874 * The SFUN method probably allows the original driver to get the list
1875 * of features supported by a given model. For now, 0x0100 or 0x0800
1876 * bit signifies that the laptop is equipped with a Wi-Fi MiniPCI card.
1877 * The significance of others is yet to be found.
1878 */
1879 if (!asus_wmi_evaluate_method(ASUS_WMI_METHODID_SFUN, 0, 0, &rv)) {
1880 pr_info("SFUN value: %#x\n", rv);
1881 asus->sfun = rv;
1882 }
1883
1884 /*
1885 * Eee PC and Notebooks seems to have different method_id for DSTS,
1886 * but it may also be related to the BIOS's SPEC.
1887 * Note, on most Eeepc, there is no way to check if a method exist
1888 * or note, while on notebooks, they returns 0xFFFFFFFE on failure,
1889 * but once again, SPEC may probably be used for that kind of things.
1890 */
1891 if (!asus_wmi_evaluate_method(ASUS_WMI_METHODID_DSTS, 0, 0, NULL))
1892 asus->dsts_id = ASUS_WMI_METHODID_DSTS;
1893 else
1894 asus->dsts_id = ASUS_WMI_METHODID_DSTS2;
1895
1896 /* CWAP allow to define the behavior of the Fn+F2 key,
1897 * this method doesn't seems to be present on Eee PCs */
1898 if (asus->driver->quirks->wapf >= 0)
1899 asus_wmi_set_devstate(ASUS_WMI_DEVID_CWAP,
1900 asus->driver->quirks->wapf, NULL);
1901
1902 return asus_wmi_sysfs_init(asus->platform_device);
1903 }
1904
1905 static void asus_wmi_platform_exit(struct asus_wmi *asus)
1906 {
1907 asus_wmi_sysfs_exit(asus->platform_device);
1908 }
1909
1910 /*
1911 * debugfs
1912 */
1913 struct asus_wmi_debugfs_node {
1914 struct asus_wmi *asus;
1915 char *name;
1916 int (*show) (struct seq_file *m, void *data);
1917 };
1918
1919 static int show_dsts(struct seq_file *m, void *data)
1920 {
1921 struct asus_wmi *asus = m->private;
1922 int err;
1923 u32 retval = -1;
1924
1925 err = asus_wmi_get_devstate(asus, asus->debug.dev_id, &retval);
1926
1927 if (err < 0)
1928 return err;
1929
1930 seq_printf(m, "DSTS(%#x) = %#x\n", asus->debug.dev_id, retval);
1931
1932 return 0;
1933 }
1934
1935 static int show_devs(struct seq_file *m, void *data)
1936 {
1937 struct asus_wmi *asus = m->private;
1938 int err;
1939 u32 retval = -1;
1940
1941 err = asus_wmi_set_devstate(asus->debug.dev_id, asus->debug.ctrl_param,
1942 &retval);
1943
1944 if (err < 0)
1945 return err;
1946
1947 seq_printf(m, "DEVS(%#x, %#x) = %#x\n", asus->debug.dev_id,
1948 asus->debug.ctrl_param, retval);
1949
1950 return 0;
1951 }
1952
1953 static int show_call(struct seq_file *m, void *data)
1954 {
1955 struct asus_wmi *asus = m->private;
1956 struct bios_args args = {
1957 .arg0 = asus->debug.dev_id,
1958 .arg1 = asus->debug.ctrl_param,
1959 };
1960 struct acpi_buffer input = { (acpi_size) sizeof(args), &args };
1961 struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
1962 union acpi_object *obj;
1963 acpi_status status;
1964
1965 status = wmi_evaluate_method(ASUS_WMI_MGMT_GUID,
1966 1, asus->debug.method_id,
1967 &input, &output);
1968
1969 if (ACPI_FAILURE(status))
1970 return -EIO;
1971
1972 obj = (union acpi_object *)output.pointer;
1973 if (obj && obj->type == ACPI_TYPE_INTEGER)
1974 seq_printf(m, "%#x(%#x, %#x) = %#x\n", asus->debug.method_id,
1975 asus->debug.dev_id, asus->debug.ctrl_param,
1976 (u32) obj->integer.value);
1977 else
1978 seq_printf(m, "%#x(%#x, %#x) = t:%d\n", asus->debug.method_id,
1979 asus->debug.dev_id, asus->debug.ctrl_param,
1980 obj ? obj->type : -1);
1981
1982 kfree(obj);
1983
1984 return 0;
1985 }
1986
1987 static struct asus_wmi_debugfs_node asus_wmi_debug_files[] = {
1988 {NULL, "devs", show_devs},
1989 {NULL, "dsts", show_dsts},
1990 {NULL, "call", show_call},
1991 };
1992
1993 static int asus_wmi_debugfs_open(struct inode *inode, struct file *file)
1994 {
1995 struct asus_wmi_debugfs_node *node = inode->i_private;
1996
1997 return single_open(file, node->show, node->asus);
1998 }
1999
2000 static const struct file_operations asus_wmi_debugfs_io_ops = {
2001 .owner = THIS_MODULE,
2002 .open = asus_wmi_debugfs_open,
2003 .read = seq_read,
2004 .llseek = seq_lseek,
2005 .release = single_release,
2006 };
2007
2008 static void asus_wmi_debugfs_exit(struct asus_wmi *asus)
2009 {
2010 debugfs_remove_recursive(asus->debug.root);
2011 }
2012
2013 static int asus_wmi_debugfs_init(struct asus_wmi *asus)
2014 {
2015 struct dentry *dent;
2016 int i;
2017
2018 asus->debug.root = debugfs_create_dir(asus->driver->name, NULL);
2019 if (!asus->debug.root) {
2020 pr_err("failed to create debugfs directory\n");
2021 goto error_debugfs;
2022 }
2023
2024 dent = debugfs_create_x32("method_id", S_IRUGO | S_IWUSR,
2025 asus->debug.root, &asus->debug.method_id);
2026 if (!dent)
2027 goto error_debugfs;
2028
2029 dent = debugfs_create_x32("dev_id", S_IRUGO | S_IWUSR,
2030 asus->debug.root, &asus->debug.dev_id);
2031 if (!dent)
2032 goto error_debugfs;
2033
2034 dent = debugfs_create_x32("ctrl_param", S_IRUGO | S_IWUSR,
2035 asus->debug.root, &asus->debug.ctrl_param);
2036 if (!dent)
2037 goto error_debugfs;
2038
2039 for (i = 0; i < ARRAY_SIZE(asus_wmi_debug_files); i++) {
2040 struct asus_wmi_debugfs_node *node = &asus_wmi_debug_files[i];
2041
2042 node->asus = asus;
2043 dent = debugfs_create_file(node->name, S_IFREG | S_IRUGO,
2044 asus->debug.root, node,
2045 &asus_wmi_debugfs_io_ops);
2046 if (!dent) {
2047 pr_err("failed to create debug file: %s\n", node->name);
2048 goto error_debugfs;
2049 }
2050 }
2051
2052 return 0;
2053
2054 error_debugfs:
2055 asus_wmi_debugfs_exit(asus);
2056 return -ENOMEM;
2057 }
2058
2059 static int asus_wmi_fan_init(struct asus_wmi *asus)
2060 {
2061 int status;
2062
2063 asus->asus_hwmon_pwm = -1;
2064 asus->asus_hwmon_num_fans = -1;
2065 asus->asus_hwmon_fan_manual_mode = false;
2066
2067 status = asus_hwmon_get_fan_number(asus, &asus->asus_hwmon_num_fans);
2068 if (status) {
2069 asus->asus_hwmon_num_fans = 0;
2070 pr_warn("Could not determine number of fans: %d\n", status);
2071 return -ENXIO;
2072 }
2073
2074 pr_info("Number of fans: %d\n", asus->asus_hwmon_num_fans);
2075 return 0;
2076 }
2077
2078 /*
2079 * WMI Driver
2080 */
2081 static int asus_wmi_add(struct platform_device *pdev)
2082 {
2083 struct platform_driver *pdrv = to_platform_driver(pdev->dev.driver);
2084 struct asus_wmi_driver *wdrv = to_asus_wmi_driver(pdrv);
2085 struct asus_wmi *asus;
2086 const char *chassis_type;
2087 acpi_status status;
2088 int err;
2089 u32 result;
2090
2091 asus = kzalloc(sizeof(struct asus_wmi), GFP_KERNEL);
2092 if (!asus)
2093 return -ENOMEM;
2094
2095 asus->driver = wdrv;
2096 asus->platform_device = pdev;
2097 wdrv->platform_device = pdev;
2098 platform_set_drvdata(asus->platform_device, asus);
2099
2100 if (wdrv->detect_quirks)
2101 wdrv->detect_quirks(asus->driver);
2102
2103 err = asus_wmi_platform_init(asus);
2104 if (err)
2105 goto fail_platform;
2106
2107 err = asus_wmi_input_init(asus);
2108 if (err)
2109 goto fail_input;
2110
2111 err = asus_wmi_fan_init(asus); /* probably no problems on error */
2112 asus_hwmon_fan_set_auto(asus);
2113
2114 err = asus_wmi_hwmon_init(asus);
2115 if (err)
2116 goto fail_hwmon;
2117
2118 err = asus_wmi_led_init(asus);
2119 if (err)
2120 goto fail_leds;
2121
2122 asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_WLAN, &result);
2123 if (result & (ASUS_WMI_DSTS_PRESENCE_BIT | ASUS_WMI_DSTS_USER_BIT))
2124 asus->driver->wlan_ctrl_by_user = 1;
2125
2126 if (asus->driver->wlan_ctrl_by_user && ashs_present())
2127 asus->driver->quirks->no_rfkill = 1;
2128
2129 if (!asus->driver->quirks->no_rfkill) {
2130 err = asus_wmi_rfkill_init(asus);
2131 if (err)
2132 goto fail_rfkill;
2133 }
2134
2135 if (asus->driver->quirks->wmi_force_als_set)
2136 asus_wmi_set_als();
2137
2138 /* Some Asus desktop boards export an acpi-video backlight interface,
2139 stop this from showing up */
2140 chassis_type = dmi_get_system_info(DMI_CHASSIS_TYPE);
2141 if (chassis_type && !strcmp(chassis_type, "3"))
2142 acpi_video_set_dmi_backlight_type(acpi_backlight_vendor);
2143
2144 if (asus->driver->quirks->wmi_backlight_power)
2145 acpi_video_set_dmi_backlight_type(acpi_backlight_vendor);
2146
2147 if (asus->driver->quirks->wmi_backlight_native)
2148 acpi_video_set_dmi_backlight_type(acpi_backlight_native);
2149
2150 if (asus->driver->quirks->xusb2pr)
2151 asus_wmi_set_xusb2pr(asus);
2152
2153 if (acpi_video_get_backlight_type() == acpi_backlight_vendor) {
2154 err = asus_wmi_backlight_init(asus);
2155 if (err && err != -ENODEV)
2156 goto fail_backlight;
2157 }
2158
2159 status = wmi_install_notify_handler(asus->driver->event_guid,
2160 asus_wmi_notify, asus);
2161 if (ACPI_FAILURE(status)) {
2162 pr_err("Unable to register notify handler - %d\n", status);
2163 err = -ENODEV;
2164 goto fail_wmi_handler;
2165 }
2166
2167 err = asus_wmi_debugfs_init(asus);
2168 if (err)
2169 goto fail_debugfs;
2170
2171 return 0;
2172
2173 fail_debugfs:
2174 wmi_remove_notify_handler(asus->driver->event_guid);
2175 fail_wmi_handler:
2176 asus_wmi_backlight_exit(asus);
2177 fail_backlight:
2178 asus_wmi_rfkill_exit(asus);
2179 fail_rfkill:
2180 asus_wmi_led_exit(asus);
2181 fail_leds:
2182 fail_hwmon:
2183 asus_wmi_input_exit(asus);
2184 fail_input:
2185 asus_wmi_platform_exit(asus);
2186 fail_platform:
2187 kfree(asus);
2188 return err;
2189 }
2190
2191 static int asus_wmi_remove(struct platform_device *device)
2192 {
2193 struct asus_wmi *asus;
2194
2195 asus = platform_get_drvdata(device);
2196 wmi_remove_notify_handler(asus->driver->event_guid);
2197 asus_wmi_backlight_exit(asus);
2198 asus_wmi_input_exit(asus);
2199 asus_wmi_led_exit(asus);
2200 asus_wmi_rfkill_exit(asus);
2201 asus_wmi_debugfs_exit(asus);
2202 asus_wmi_platform_exit(asus);
2203 asus_hwmon_fan_set_auto(asus);
2204
2205 kfree(asus);
2206 return 0;
2207 }
2208
2209 /*
2210 * Platform driver - hibernate/resume callbacks
2211 */
2212 static int asus_hotk_thaw(struct device *device)
2213 {
2214 struct asus_wmi *asus = dev_get_drvdata(device);
2215
2216 if (asus->wlan.rfkill) {
2217 bool wlan;
2218
2219 /*
2220 * Work around bios bug - acpi _PTS turns off the wireless led
2221 * during suspend. Normally it restores it on resume, but
2222 * we should kick it ourselves in case hibernation is aborted.
2223 */
2224 wlan = asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WLAN);
2225 asus_wmi_set_devstate(ASUS_WMI_DEVID_WLAN, wlan, NULL);
2226 }
2227
2228 return 0;
2229 }
2230
2231 static int asus_hotk_resume(struct device *device)
2232 {
2233 struct asus_wmi *asus = dev_get_drvdata(device);
2234
2235 if (!IS_ERR_OR_NULL(asus->kbd_led.dev))
2236 queue_work(asus->led_workqueue, &asus->kbd_led_work);
2237
2238 return 0;
2239 }
2240
2241 static int asus_hotk_restore(struct device *device)
2242 {
2243 struct asus_wmi *asus = dev_get_drvdata(device);
2244 int bl;
2245
2246 /* Refresh both wlan rfkill state and pci hotplug */
2247 if (asus->wlan.rfkill)
2248 asus_rfkill_hotplug(asus);
2249
2250 if (asus->bluetooth.rfkill) {
2251 bl = !asus_wmi_get_devstate_simple(asus,
2252 ASUS_WMI_DEVID_BLUETOOTH);
2253 rfkill_set_sw_state(asus->bluetooth.rfkill, bl);
2254 }
2255 if (asus->wimax.rfkill) {
2256 bl = !asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WIMAX);
2257 rfkill_set_sw_state(asus->wimax.rfkill, bl);
2258 }
2259 if (asus->wwan3g.rfkill) {
2260 bl = !asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WWAN3G);
2261 rfkill_set_sw_state(asus->wwan3g.rfkill, bl);
2262 }
2263 if (asus->gps.rfkill) {
2264 bl = !asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_GPS);
2265 rfkill_set_sw_state(asus->gps.rfkill, bl);
2266 }
2267 if (asus->uwb.rfkill) {
2268 bl = !asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_UWB);
2269 rfkill_set_sw_state(asus->uwb.rfkill, bl);
2270 }
2271 if (!IS_ERR_OR_NULL(asus->kbd_led.dev))
2272 queue_work(asus->led_workqueue, &asus->kbd_led_work);
2273
2274 return 0;
2275 }
2276
2277 static const struct dev_pm_ops asus_pm_ops = {
2278 .thaw = asus_hotk_thaw,
2279 .restore = asus_hotk_restore,
2280 .resume = asus_hotk_resume,
2281 };
2282
2283 static int asus_wmi_probe(struct platform_device *pdev)
2284 {
2285 struct platform_driver *pdrv = to_platform_driver(pdev->dev.driver);
2286 struct asus_wmi_driver *wdrv = to_asus_wmi_driver(pdrv);
2287 int ret;
2288
2289 if (!wmi_has_guid(ASUS_WMI_MGMT_GUID)) {
2290 pr_warn("Management GUID not found\n");
2291 return -ENODEV;
2292 }
2293
2294 if (wdrv->event_guid && !wmi_has_guid(wdrv->event_guid)) {
2295 pr_warn("Event GUID not found\n");
2296 return -ENODEV;
2297 }
2298
2299 if (wdrv->probe) {
2300 ret = wdrv->probe(pdev);
2301 if (ret)
2302 return ret;
2303 }
2304
2305 return asus_wmi_add(pdev);
2306 }
2307
2308 static bool used;
2309
2310 int __init_or_module asus_wmi_register_driver(struct asus_wmi_driver *driver)
2311 {
2312 struct platform_driver *platform_driver;
2313 struct platform_device *platform_device;
2314
2315 if (used)
2316 return -EBUSY;
2317
2318 platform_driver = &driver->platform_driver;
2319 platform_driver->remove = asus_wmi_remove;
2320 platform_driver->driver.owner = driver->owner;
2321 platform_driver->driver.name = driver->name;
2322 platform_driver->driver.pm = &asus_pm_ops;
2323
2324 platform_device = platform_create_bundle(platform_driver,
2325 asus_wmi_probe,
2326 NULL, 0, NULL, 0);
2327 if (IS_ERR(platform_device))
2328 return PTR_ERR(platform_device);
2329
2330 used = true;
2331 return 0;
2332 }
2333 EXPORT_SYMBOL_GPL(asus_wmi_register_driver);
2334
2335 void asus_wmi_unregister_driver(struct asus_wmi_driver *driver)
2336 {
2337 platform_device_unregister(driver->platform_device);
2338 platform_driver_unregister(&driver->platform_driver);
2339 used = false;
2340 }
2341 EXPORT_SYMBOL_GPL(asus_wmi_unregister_driver);
2342
2343 static int __init asus_wmi_init(void)
2344 {
2345 if (!wmi_has_guid(ASUS_WMI_MGMT_GUID)) {
2346 pr_info("Asus Management GUID not found\n");
2347 return -ENODEV;
2348 }
2349
2350 pr_info("ASUS WMI generic driver loaded\n");
2351 return 0;
2352 }
2353
2354 static void __exit asus_wmi_exit(void)
2355 {
2356 pr_info("ASUS WMI generic driver unloaded\n");
2357 }
2358
2359 module_init(asus_wmi_init);
2360 module_exit(asus_wmi_exit);
Linux with added FPC-III support