2 * Asus PC WMI hotkey driver
4 * Copyright(C) 2010 Intel Corporation.
5 * Copyright(C) 2010-2011 Corentin Chary <corentin.chary@gmail.com>
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>
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.
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.
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
27 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
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>
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>
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");
59 #define to_asus_wmi_driver(pdrv) \
60 (container_of((pdrv), struct asus_wmi_driver, platform_driver))
62 #define ASUS_WMI_MGMT_GUID "97845ED0-4E6D-11DE-8A39-0800200C9A66"
64 #define NOTIFY_BRNUP_MIN 0x11
65 #define NOTIFY_BRNUP_MAX 0x1f
66 #define NOTIFY_BRNDOWN_MIN 0x20
67 #define NOTIFY_BRNDOWN_MAX 0x2e
68 #define NOTIFY_KBD_BRTUP 0xc4
69 #define NOTIFY_KBD_BRTDWN 0xc5
70 #define NOTIFY_KBD_BRTTOGGLE 0xc7
73 #define ASUS_WMI_METHODID_SPEC 0x43455053 /* BIOS SPECification */
74 #define ASUS_WMI_METHODID_SFBD 0x44424653 /* Set First Boot Device */
75 #define ASUS_WMI_METHODID_GLCD 0x44434C47 /* Get LCD status */
76 #define ASUS_WMI_METHODID_GPID 0x44495047 /* Get Panel ID?? (Resol) */
77 #define ASUS_WMI_METHODID_QMOD 0x444F4D51 /* Quiet MODe */
78 #define ASUS_WMI_METHODID_SPLV 0x4C425053 /* Set Panel Light Value */
79 #define ASUS_WMI_METHODID_AGFN 0x4E464741 /* FaN? */
80 #define ASUS_WMI_METHODID_SFUN 0x4E554653 /* FUNCtionalities */
81 #define ASUS_WMI_METHODID_SDSP 0x50534453 /* Set DiSPlay output */
82 #define ASUS_WMI_METHODID_GDSP 0x50534447 /* Get DiSPlay output */
83 #define ASUS_WMI_METHODID_DEVP 0x50564544 /* DEVice Policy */
84 #define ASUS_WMI_METHODID_OSVR 0x5256534F /* OS VeRsion */
85 #define ASUS_WMI_METHODID_DSTS 0x53544344 /* Device STatuS */
86 #define ASUS_WMI_METHODID_DSTS2 0x53545344 /* Device STatuS #2*/
87 #define ASUS_WMI_METHODID_BSTS 0x53545342 /* Bios STatuS ? */
88 #define ASUS_WMI_METHODID_DEVS 0x53564544 /* DEVice Set */
89 #define ASUS_WMI_METHODID_CFVS 0x53564643 /* CPU Frequency Volt Set */
90 #define ASUS_WMI_METHODID_KBFT 0x5446424B /* KeyBoard FilTer */
91 #define ASUS_WMI_METHODID_INIT 0x54494E49 /* INITialize */
92 #define ASUS_WMI_METHODID_HKEY 0x59454B48 /* Hot KEY ?? */
94 #define ASUS_WMI_UNSUPPORTED_METHOD 0xFFFFFFFE
97 #define ASUS_WMI_DEVID_HW_SWITCH 0x00010001
98 #define ASUS_WMI_DEVID_WIRELESS_LED 0x00010002
99 #define ASUS_WMI_DEVID_CWAP 0x00010003
100 #define ASUS_WMI_DEVID_WLAN 0x00010011
101 #define ASUS_WMI_DEVID_WLAN_LED 0x00010012
102 #define ASUS_WMI_DEVID_BLUETOOTH 0x00010013
103 #define ASUS_WMI_DEVID_GPS 0x00010015
104 #define ASUS_WMI_DEVID_WIMAX 0x00010017
105 #define ASUS_WMI_DEVID_WWAN3G 0x00010019
106 #define ASUS_WMI_DEVID_UWB 0x00010021
109 /* 0x000200XX and 0x000400XX */
110 #define ASUS_WMI_DEVID_LED1 0x00020011
111 #define ASUS_WMI_DEVID_LED2 0x00020012
112 #define ASUS_WMI_DEVID_LED3 0x00020013
113 #define ASUS_WMI_DEVID_LED4 0x00020014
114 #define ASUS_WMI_DEVID_LED5 0x00020015
115 #define ASUS_WMI_DEVID_LED6 0x00020016
117 /* Backlight and Brightness */
118 #define ASUS_WMI_DEVID_ALS_ENABLE 0x00050001 /* Ambient Light Sensor */
119 #define ASUS_WMI_DEVID_BACKLIGHT 0x00050011
120 #define ASUS_WMI_DEVID_BRIGHTNESS 0x00050012
121 #define ASUS_WMI_DEVID_KBD_BACKLIGHT 0x00050021
122 #define ASUS_WMI_DEVID_LIGHT_SENSOR 0x00050022 /* ?? */
123 #define ASUS_WMI_DEVID_LIGHTBAR 0x00050025
126 #define ASUS_WMI_DEVID_CAMERA 0x00060013
129 #define ASUS_WMI_DEVID_CARDREADER 0x00080013
132 #define ASUS_WMI_DEVID_TOUCHPAD 0x00100011
133 #define ASUS_WMI_DEVID_TOUCHPAD_LED 0x00100012
136 #define ASUS_WMI_DEVID_THERMAL_CTRL 0x00110011
137 #define ASUS_WMI_DEVID_FAN_CTRL 0x00110012
140 #define ASUS_WMI_DEVID_PROCESSOR_STATE 0x00120012
142 /* Deep S3 / Resume on LID open */
143 #define ASUS_WMI_DEVID_LID_RESUME 0x00120031
146 #define ASUS_WMI_DSTS_STATUS_BIT 0x00000001
147 #define ASUS_WMI_DSTS_UNKNOWN_BIT 0x00000002
148 #define ASUS_WMI_DSTS_PRESENCE_BIT 0x00010000
149 #define ASUS_WMI_DSTS_USER_BIT 0x00020000
150 #define ASUS_WMI_DSTS_BIOS_BIT 0x00040000
151 #define ASUS_WMI_DSTS_BRIGHTNESS_MASK 0x000000FF
152 #define ASUS_WMI_DSTS_MAX_BRIGTH_MASK 0x0000FF00
153 #define ASUS_WMI_DSTS_LIGHTBAR_MASK 0x0000000F
155 #define ASUS_FAN_DESC "cpu_fan"
156 #define ASUS_FAN_MFUN 0x13
157 #define ASUS_FAN_SFUN_READ 0x06
158 #define ASUS_FAN_SFUN_WRITE 0x07
159 #define ASUS_FAN_CTRL_MANUAL 1
160 #define ASUS_FAN_CTRL_AUTO 2
162 #define USB_INTEL_XUSB2PR 0xD0
163 #define PCI_DEVICE_ID_INTEL_LYNXPOINT_LP_XHCI 0x9c31
165 static const char * const ashs_ids[] = { "ATK4001", "ATK4002", NULL };
167 static bool ashs_present(void)
170 while (ashs_ids[i]) {
171 if (acpi_dev_found(ashs_ids[i++]))
183 * Struct that's used for all methods called via AGFN. Naming is
184 * identically to the AML code.
187 u16 mfun; /* probably "Multi-function" to be called */
188 u16 sfun; /* probably "Sub-function" to be called */
189 u16 len; /* size of the hole struct, including subfunction fields */
190 u8 stas; /* not used by now */
191 u8 err; /* zero on success */
194 /* struct used for calling fan read and write methods */
196 struct agfn_args agfn; /* common fields */
197 u8 fan; /* fan number: 0: set auto mode 1: 1st fan */
198 u32 speed; /* read: RPM/100 - write: 0-255 */
202 * <platform>/ - debugfs root directory
203 * dev_id - current dev_id
204 * ctrl_param - current ctrl_param
205 * method_id - current method_id
206 * devs - call DEVS(dev_id, ctrl_param) and print result
207 * dsts - call DSTS(dev_id) and print result
208 * call - call method_id(dev_id, ctrl_param) and print result
210 struct asus_wmi_debug {
218 struct asus_wmi *asus;
219 struct rfkill *rfkill;
228 struct input_dev *inputdev;
229 struct backlight_device *backlight_device;
230 struct platform_device *platform_device;
232 struct led_classdev wlan_led;
234 struct led_classdev tpd_led;
236 struct led_classdev kbd_led;
238 struct led_classdev lightbar_led;
240 struct workqueue_struct *led_workqueue;
241 struct work_struct tpd_led_work;
242 struct work_struct kbd_led_work;
243 struct work_struct wlan_led_work;
244 struct work_struct lightbar_led_work;
246 struct asus_rfkill wlan;
247 struct asus_rfkill bluetooth;
248 struct asus_rfkill wimax;
249 struct asus_rfkill wwan3g;
250 struct asus_rfkill gps;
251 struct asus_rfkill uwb;
253 bool asus_hwmon_fan_manual_mode;
254 int asus_hwmon_num_fans;
257 struct hotplug_slot *hotplug_slot;
258 struct mutex hotplug_lock;
259 struct mutex wmi_lock;
260 struct workqueue_struct *hotplug_workqueue;
261 struct work_struct hotplug_work;
263 struct asus_wmi_debug debug;
265 struct asus_wmi_driver *driver;
268 static int asus_wmi_input_init(struct asus_wmi *asus)
272 asus->inputdev = input_allocate_device();
276 asus->inputdev->name = asus->driver->input_name;
277 asus->inputdev->phys = asus->driver->input_phys;
278 asus->inputdev->id.bustype = BUS_HOST;
279 asus->inputdev->dev.parent = &asus->platform_device->dev;
280 set_bit(EV_REP, asus->inputdev->evbit);
282 err = sparse_keymap_setup(asus->inputdev, asus->driver->keymap, NULL);
286 err = input_register_device(asus->inputdev);
293 input_free_device(asus->inputdev);
297 static void asus_wmi_input_exit(struct asus_wmi *asus)
300 input_unregister_device(asus->inputdev);
302 asus->inputdev = NULL;
305 static int asus_wmi_evaluate_method(u32 method_id, u32 arg0, u32 arg1,
308 struct bios_args args = {
312 struct acpi_buffer input = { (acpi_size) sizeof(args), &args };
313 struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
315 union acpi_object *obj;
318 status = wmi_evaluate_method(ASUS_WMI_MGMT_GUID, 0, method_id,
321 if (ACPI_FAILURE(status))
324 obj = (union acpi_object *)output.pointer;
325 if (obj && obj->type == ACPI_TYPE_INTEGER)
326 tmp = (u32) obj->integer.value;
334 if (ACPI_FAILURE(status))
337 if (tmp == ASUS_WMI_UNSUPPORTED_METHOD)
343 static int asus_wmi_evaluate_method_agfn(const struct acpi_buffer args)
345 struct acpi_buffer input;
351 * Copy to dma capable address otherwise memory corruption occurs as
352 * bios has to be able to access it.
354 input.pointer = kzalloc(args.length, GFP_DMA | GFP_KERNEL);
355 input.length = args.length;
358 phys_addr = virt_to_phys(input.pointer);
359 memcpy(input.pointer, args.pointer, args.length);
361 status = asus_wmi_evaluate_method(ASUS_WMI_METHODID_AGFN,
362 phys_addr, 0, &retval);
364 memcpy(args.pointer, input.pointer, args.length);
366 kfree(input.pointer);
373 static int asus_wmi_get_devstate(struct asus_wmi *asus, u32 dev_id, u32 *retval)
375 return asus_wmi_evaluate_method(asus->dsts_id, dev_id, 0, retval);
378 static int asus_wmi_set_devstate(u32 dev_id, u32 ctrl_param,
381 return asus_wmi_evaluate_method(ASUS_WMI_METHODID_DEVS, dev_id,
385 /* Helper for special devices with magic return codes */
386 static int asus_wmi_get_devstate_bits(struct asus_wmi *asus,
387 u32 dev_id, u32 mask)
392 err = asus_wmi_get_devstate(asus, dev_id, &retval);
397 if (!(retval & ASUS_WMI_DSTS_PRESENCE_BIT))
400 if (mask == ASUS_WMI_DSTS_STATUS_BIT) {
401 if (retval & ASUS_WMI_DSTS_UNKNOWN_BIT)
405 return retval & mask;
408 static int asus_wmi_get_devstate_simple(struct asus_wmi *asus, u32 dev_id)
410 return asus_wmi_get_devstate_bits(asus, dev_id,
411 ASUS_WMI_DSTS_STATUS_BIT);
418 * These functions actually update the LED's, and are called from a
419 * workqueue. By doing this as separate work rather than when the LED
420 * subsystem asks, we avoid messing with the Asus ACPI stuff during a
421 * potentially bad time, such as a timer interrupt.
423 static void tpd_led_update(struct work_struct *work)
426 struct asus_wmi *asus;
428 asus = container_of(work, struct asus_wmi, tpd_led_work);
430 ctrl_param = asus->tpd_led_wk;
431 asus_wmi_set_devstate(ASUS_WMI_DEVID_TOUCHPAD_LED, ctrl_param, NULL);
434 static void tpd_led_set(struct led_classdev *led_cdev,
435 enum led_brightness value)
437 struct asus_wmi *asus;
439 asus = container_of(led_cdev, struct asus_wmi, tpd_led);
441 asus->tpd_led_wk = !!value;
442 queue_work(asus->led_workqueue, &asus->tpd_led_work);
445 static int read_tpd_led_state(struct asus_wmi *asus)
447 return asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_TOUCHPAD_LED);
450 static enum led_brightness tpd_led_get(struct led_classdev *led_cdev)
452 struct asus_wmi *asus;
454 asus = container_of(led_cdev, struct asus_wmi, tpd_led);
456 return read_tpd_led_state(asus);
459 static void kbd_led_update(struct work_struct *work)
462 struct asus_wmi *asus;
464 asus = container_of(work, struct asus_wmi, kbd_led_work);
466 ctrl_param = 0x80 | (asus->kbd_led_wk & 0x7F);
467 asus_wmi_set_devstate(ASUS_WMI_DEVID_KBD_BACKLIGHT, ctrl_param, NULL);
468 led_classdev_notify_brightness_hw_changed(&asus->kbd_led, asus->kbd_led_wk);
471 static int kbd_led_read(struct asus_wmi *asus, int *level, int *env)
477 * bit 7: light on/off
478 * bit 8-10: environment (0: dark, 1: normal, 2: light)
479 * bit 17: status unknown
481 retval = asus_wmi_get_devstate_bits(asus, ASUS_WMI_DEVID_KBD_BACKLIGHT,
484 /* Unknown status is considered as off */
485 if (retval == 0x8000)
490 *level = retval & 0x7F;
492 *env = (retval >> 8) & 0x7F;
499 static void do_kbd_led_set(struct led_classdev *led_cdev, int value)
501 struct asus_wmi *asus;
504 asus = container_of(led_cdev, struct asus_wmi, kbd_led);
505 max_level = asus->kbd_led.max_brightness;
507 if (value > max_level)
512 asus->kbd_led_wk = value;
513 queue_work(asus->led_workqueue, &asus->kbd_led_work);
516 static void kbd_led_set(struct led_classdev *led_cdev,
517 enum led_brightness value)
519 do_kbd_led_set(led_cdev, value);
522 static enum led_brightness kbd_led_get(struct led_classdev *led_cdev)
524 struct asus_wmi *asus;
527 asus = container_of(led_cdev, struct asus_wmi, kbd_led);
529 retval = kbd_led_read(asus, &value, NULL);
537 static int wlan_led_unknown_state(struct asus_wmi *asus)
541 asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_WIRELESS_LED, &result);
543 return result & ASUS_WMI_DSTS_UNKNOWN_BIT;
546 static int wlan_led_presence(struct asus_wmi *asus)
550 asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_WIRELESS_LED, &result);
552 return result & ASUS_WMI_DSTS_PRESENCE_BIT;
555 static void wlan_led_update(struct work_struct *work)
558 struct asus_wmi *asus;
560 asus = container_of(work, struct asus_wmi, wlan_led_work);
562 ctrl_param = asus->wlan_led_wk;
563 asus_wmi_set_devstate(ASUS_WMI_DEVID_WIRELESS_LED, ctrl_param, NULL);
566 static void wlan_led_set(struct led_classdev *led_cdev,
567 enum led_brightness value)
569 struct asus_wmi *asus;
571 asus = container_of(led_cdev, struct asus_wmi, wlan_led);
573 asus->wlan_led_wk = !!value;
574 queue_work(asus->led_workqueue, &asus->wlan_led_work);
577 static enum led_brightness wlan_led_get(struct led_classdev *led_cdev)
579 struct asus_wmi *asus;
582 asus = container_of(led_cdev, struct asus_wmi, wlan_led);
583 asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_WIRELESS_LED, &result);
585 return result & ASUS_WMI_DSTS_BRIGHTNESS_MASK;
588 static void lightbar_led_update(struct work_struct *work)
590 struct asus_wmi *asus;
593 asus = container_of(work, struct asus_wmi, lightbar_led_work);
595 ctrl_param = asus->lightbar_led_wk;
596 asus_wmi_set_devstate(ASUS_WMI_DEVID_LIGHTBAR, ctrl_param, NULL);
599 static void lightbar_led_set(struct led_classdev *led_cdev,
600 enum led_brightness value)
602 struct asus_wmi *asus;
604 asus = container_of(led_cdev, struct asus_wmi, lightbar_led);
606 asus->lightbar_led_wk = !!value;
607 queue_work(asus->led_workqueue, &asus->lightbar_led_work);
610 static enum led_brightness lightbar_led_get(struct led_classdev *led_cdev)
612 struct asus_wmi *asus;
615 asus = container_of(led_cdev, struct asus_wmi, lightbar_led);
616 asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_LIGHTBAR, &result);
618 return result & ASUS_WMI_DSTS_LIGHTBAR_MASK;
621 static int lightbar_led_presence(struct asus_wmi *asus)
625 asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_LIGHTBAR, &result);
627 return result & ASUS_WMI_DSTS_PRESENCE_BIT;
630 static void asus_wmi_led_exit(struct asus_wmi *asus)
632 if (!IS_ERR_OR_NULL(asus->kbd_led.dev))
633 led_classdev_unregister(&asus->kbd_led);
634 if (!IS_ERR_OR_NULL(asus->tpd_led.dev))
635 led_classdev_unregister(&asus->tpd_led);
636 if (!IS_ERR_OR_NULL(asus->wlan_led.dev))
637 led_classdev_unregister(&asus->wlan_led);
638 if (!IS_ERR_OR_NULL(asus->lightbar_led.dev))
639 led_classdev_unregister(&asus->lightbar_led);
640 if (asus->led_workqueue)
641 destroy_workqueue(asus->led_workqueue);
644 static int asus_wmi_led_init(struct asus_wmi *asus)
648 asus->led_workqueue = create_singlethread_workqueue("led_workqueue");
649 if (!asus->led_workqueue)
652 if (read_tpd_led_state(asus) >= 0) {
653 INIT_WORK(&asus->tpd_led_work, tpd_led_update);
655 asus->tpd_led.name = "asus::touchpad";
656 asus->tpd_led.brightness_set = tpd_led_set;
657 asus->tpd_led.brightness_get = tpd_led_get;
658 asus->tpd_led.max_brightness = 1;
660 rv = led_classdev_register(&asus->platform_device->dev,
666 led_val = kbd_led_read(asus, NULL, NULL);
668 INIT_WORK(&asus->kbd_led_work, kbd_led_update);
670 asus->kbd_led_wk = led_val;
671 asus->kbd_led.name = "asus::kbd_backlight";
672 asus->kbd_led.flags = LED_BRIGHT_HW_CHANGED;
673 asus->kbd_led.brightness_set = kbd_led_set;
674 asus->kbd_led.brightness_get = kbd_led_get;
675 asus->kbd_led.max_brightness = 3;
677 rv = led_classdev_register(&asus->platform_device->dev,
683 if (wlan_led_presence(asus) && (asus->driver->quirks->wapf > 0)) {
684 INIT_WORK(&asus->wlan_led_work, wlan_led_update);
686 asus->wlan_led.name = "asus::wlan";
687 asus->wlan_led.brightness_set = wlan_led_set;
688 if (!wlan_led_unknown_state(asus))
689 asus->wlan_led.brightness_get = wlan_led_get;
690 asus->wlan_led.flags = LED_CORE_SUSPENDRESUME;
691 asus->wlan_led.max_brightness = 1;
692 asus->wlan_led.default_trigger = "asus-wlan";
694 rv = led_classdev_register(&asus->platform_device->dev,
700 if (lightbar_led_presence(asus)) {
701 INIT_WORK(&asus->lightbar_led_work, lightbar_led_update);
703 asus->lightbar_led.name = "asus::lightbar";
704 asus->lightbar_led.brightness_set = lightbar_led_set;
705 asus->lightbar_led.brightness_get = lightbar_led_get;
706 asus->lightbar_led.max_brightness = 1;
708 rv = led_classdev_register(&asus->platform_device->dev,
709 &asus->lightbar_led);
714 asus_wmi_led_exit(asus);
721 * PCI hotplug (for wlan rfkill)
723 static bool asus_wlan_rfkill_blocked(struct asus_wmi *asus)
725 int result = asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WLAN);
732 static void asus_rfkill_hotplug(struct asus_wmi *asus)
740 mutex_lock(&asus->wmi_lock);
741 blocked = asus_wlan_rfkill_blocked(asus);
742 mutex_unlock(&asus->wmi_lock);
744 mutex_lock(&asus->hotplug_lock);
745 pci_lock_rescan_remove();
747 if (asus->wlan.rfkill)
748 rfkill_set_sw_state(asus->wlan.rfkill, blocked);
750 if (asus->hotplug_slot) {
751 bus = pci_find_bus(0, 1);
753 pr_warn("Unable to find PCI bus 1?\n");
757 if (pci_bus_read_config_dword(bus, 0, PCI_VENDOR_ID, &l)) {
758 pr_err("Unable to read PCI config space?\n");
761 absent = (l == 0xffffffff);
763 if (blocked != absent) {
764 pr_warn("BIOS says wireless lan is %s, "
765 "but the pci device is %s\n",
766 blocked ? "blocked" : "unblocked",
767 absent ? "absent" : "present");
768 pr_warn("skipped wireless hotplug as probably "
769 "inappropriate for this model\n");
774 dev = pci_get_slot(bus, 0);
776 /* Device already present */
780 dev = pci_scan_single_device(bus, 0);
782 pci_bus_assign_resources(bus);
783 pci_bus_add_device(dev);
786 dev = pci_get_slot(bus, 0);
788 pci_stop_and_remove_bus_device(dev);
795 pci_unlock_rescan_remove();
796 mutex_unlock(&asus->hotplug_lock);
799 static void asus_rfkill_notify(acpi_handle handle, u32 event, void *data)
801 struct asus_wmi *asus = data;
803 if (event != ACPI_NOTIFY_BUS_CHECK)
807 * We can't call directly asus_rfkill_hotplug because most
808 * of the time WMBC is still being executed and not reetrant.
809 * There is currently no way to tell ACPICA that we want this
810 * method to be serialized, we schedule a asus_rfkill_hotplug
811 * call later, in a safer context.
813 queue_work(asus->hotplug_workqueue, &asus->hotplug_work);
816 static int asus_register_rfkill_notifier(struct asus_wmi *asus, char *node)
821 status = acpi_get_handle(NULL, node, &handle);
823 if (ACPI_SUCCESS(status)) {
824 status = acpi_install_notify_handler(handle,
826 asus_rfkill_notify, asus);
827 if (ACPI_FAILURE(status))
828 pr_warn("Failed to register notify on %s\n", node);
835 static void asus_unregister_rfkill_notifier(struct asus_wmi *asus, char *node)
837 acpi_status status = AE_OK;
840 status = acpi_get_handle(NULL, node, &handle);
842 if (ACPI_SUCCESS(status)) {
843 status = acpi_remove_notify_handler(handle,
846 if (ACPI_FAILURE(status))
847 pr_err("Error removing rfkill notify handler %s\n",
852 static int asus_get_adapter_status(struct hotplug_slot *hotplug_slot,
855 struct asus_wmi *asus = hotplug_slot->private;
856 int result = asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WLAN);
865 static struct hotplug_slot_ops asus_hotplug_slot_ops = {
866 .owner = THIS_MODULE,
867 .get_adapter_status = asus_get_adapter_status,
868 .get_power_status = asus_get_adapter_status,
871 static void asus_hotplug_work(struct work_struct *work)
873 struct asus_wmi *asus;
875 asus = container_of(work, struct asus_wmi, hotplug_work);
876 asus_rfkill_hotplug(asus);
879 static int asus_setup_pci_hotplug(struct asus_wmi *asus)
882 struct pci_bus *bus = pci_find_bus(0, 1);
885 pr_err("Unable to find wifi PCI bus\n");
889 asus->hotplug_workqueue =
890 create_singlethread_workqueue("hotplug_workqueue");
891 if (!asus->hotplug_workqueue)
892 goto error_workqueue;
894 INIT_WORK(&asus->hotplug_work, asus_hotplug_work);
896 asus->hotplug_slot = kzalloc(sizeof(struct hotplug_slot), GFP_KERNEL);
897 if (!asus->hotplug_slot)
900 asus->hotplug_slot->info = kzalloc(sizeof(struct hotplug_slot_info),
902 if (!asus->hotplug_slot->info)
905 asus->hotplug_slot->private = asus;
906 asus->hotplug_slot->ops = &asus_hotplug_slot_ops;
907 asus_get_adapter_status(asus->hotplug_slot,
908 &asus->hotplug_slot->info->adapter_status);
910 ret = pci_hp_register(asus->hotplug_slot, bus, 0, "asus-wifi");
912 pr_err("Unable to register hotplug slot - %d\n", ret);
919 kfree(asus->hotplug_slot->info);
921 kfree(asus->hotplug_slot);
922 asus->hotplug_slot = NULL;
924 destroy_workqueue(asus->hotplug_workqueue);
932 static int asus_rfkill_set(void *data, bool blocked)
934 struct asus_rfkill *priv = data;
935 u32 ctrl_param = !blocked;
936 u32 dev_id = priv->dev_id;
939 * If the user bit is set, BIOS can't set and record the wlan status,
940 * it will report the value read from id ASUS_WMI_DEVID_WLAN_LED
941 * while we query the wlan status through WMI(ASUS_WMI_DEVID_WLAN).
942 * So, we have to record wlan status in id ASUS_WMI_DEVID_WLAN_LED
943 * while setting the wlan status through WMI.
944 * This is also the behavior that windows app will do.
946 if ((dev_id == ASUS_WMI_DEVID_WLAN) &&
947 priv->asus->driver->wlan_ctrl_by_user)
948 dev_id = ASUS_WMI_DEVID_WLAN_LED;
950 return asus_wmi_set_devstate(dev_id, ctrl_param, NULL);
953 static void asus_rfkill_query(struct rfkill *rfkill, void *data)
955 struct asus_rfkill *priv = data;
958 result = asus_wmi_get_devstate_simple(priv->asus, priv->dev_id);
963 rfkill_set_sw_state(priv->rfkill, !result);
966 static int asus_rfkill_wlan_set(void *data, bool blocked)
968 struct asus_rfkill *priv = data;
969 struct asus_wmi *asus = priv->asus;
973 * This handler is enabled only if hotplug is enabled.
974 * In this case, the asus_wmi_set_devstate() will
975 * trigger a wmi notification and we need to wait
976 * this call to finish before being able to call
979 mutex_lock(&asus->wmi_lock);
980 ret = asus_rfkill_set(data, blocked);
981 mutex_unlock(&asus->wmi_lock);
985 static const struct rfkill_ops asus_rfkill_wlan_ops = {
986 .set_block = asus_rfkill_wlan_set,
987 .query = asus_rfkill_query,
990 static const struct rfkill_ops asus_rfkill_ops = {
991 .set_block = asus_rfkill_set,
992 .query = asus_rfkill_query,
995 static int asus_new_rfkill(struct asus_wmi *asus,
996 struct asus_rfkill *arfkill,
997 const char *name, enum rfkill_type type, int dev_id)
999 int result = asus_wmi_get_devstate_simple(asus, dev_id);
1000 struct rfkill **rfkill = &arfkill->rfkill;
1005 arfkill->dev_id = dev_id;
1006 arfkill->asus = asus;
1008 if (dev_id == ASUS_WMI_DEVID_WLAN &&
1009 asus->driver->quirks->hotplug_wireless)
1010 *rfkill = rfkill_alloc(name, &asus->platform_device->dev, type,
1011 &asus_rfkill_wlan_ops, arfkill);
1013 *rfkill = rfkill_alloc(name, &asus->platform_device->dev, type,
1014 &asus_rfkill_ops, arfkill);
1019 if ((dev_id == ASUS_WMI_DEVID_WLAN) &&
1020 (asus->driver->quirks->wapf > 0))
1021 rfkill_set_led_trigger_name(*rfkill, "asus-wlan");
1023 rfkill_init_sw_state(*rfkill, !result);
1024 result = rfkill_register(*rfkill);
1026 rfkill_destroy(*rfkill);
1033 static void asus_wmi_rfkill_exit(struct asus_wmi *asus)
1035 if (asus->driver->wlan_ctrl_by_user && ashs_present())
1038 asus_unregister_rfkill_notifier(asus, "\\_SB.PCI0.P0P5");
1039 asus_unregister_rfkill_notifier(asus, "\\_SB.PCI0.P0P6");
1040 asus_unregister_rfkill_notifier(asus, "\\_SB.PCI0.P0P7");
1041 if (asus->wlan.rfkill) {
1042 rfkill_unregister(asus->wlan.rfkill);
1043 rfkill_destroy(asus->wlan.rfkill);
1044 asus->wlan.rfkill = NULL;
1047 * Refresh pci hotplug in case the rfkill state was changed after
1048 * asus_unregister_rfkill_notifier()
1050 asus_rfkill_hotplug(asus);
1051 if (asus->hotplug_slot) {
1052 pci_hp_deregister(asus->hotplug_slot);
1053 kfree(asus->hotplug_slot->info);
1054 kfree(asus->hotplug_slot);
1056 if (asus->hotplug_workqueue)
1057 destroy_workqueue(asus->hotplug_workqueue);
1059 if (asus->bluetooth.rfkill) {
1060 rfkill_unregister(asus->bluetooth.rfkill);
1061 rfkill_destroy(asus->bluetooth.rfkill);
1062 asus->bluetooth.rfkill = NULL;
1064 if (asus->wimax.rfkill) {
1065 rfkill_unregister(asus->wimax.rfkill);
1066 rfkill_destroy(asus->wimax.rfkill);
1067 asus->wimax.rfkill = NULL;
1069 if (asus->wwan3g.rfkill) {
1070 rfkill_unregister(asus->wwan3g.rfkill);
1071 rfkill_destroy(asus->wwan3g.rfkill);
1072 asus->wwan3g.rfkill = NULL;
1074 if (asus->gps.rfkill) {
1075 rfkill_unregister(asus->gps.rfkill);
1076 rfkill_destroy(asus->gps.rfkill);
1077 asus->gps.rfkill = NULL;
1079 if (asus->uwb.rfkill) {
1080 rfkill_unregister(asus->uwb.rfkill);
1081 rfkill_destroy(asus->uwb.rfkill);
1082 asus->uwb.rfkill = NULL;
1086 static int asus_wmi_rfkill_init(struct asus_wmi *asus)
1090 mutex_init(&asus->hotplug_lock);
1091 mutex_init(&asus->wmi_lock);
1093 result = asus_new_rfkill(asus, &asus->wlan, "asus-wlan",
1094 RFKILL_TYPE_WLAN, ASUS_WMI_DEVID_WLAN);
1096 if (result && result != -ENODEV)
1099 result = asus_new_rfkill(asus, &asus->bluetooth,
1100 "asus-bluetooth", RFKILL_TYPE_BLUETOOTH,
1101 ASUS_WMI_DEVID_BLUETOOTH);
1103 if (result && result != -ENODEV)
1106 result = asus_new_rfkill(asus, &asus->wimax, "asus-wimax",
1107 RFKILL_TYPE_WIMAX, ASUS_WMI_DEVID_WIMAX);
1109 if (result && result != -ENODEV)
1112 result = asus_new_rfkill(asus, &asus->wwan3g, "asus-wwan3g",
1113 RFKILL_TYPE_WWAN, ASUS_WMI_DEVID_WWAN3G);
1115 if (result && result != -ENODEV)
1118 result = asus_new_rfkill(asus, &asus->gps, "asus-gps",
1119 RFKILL_TYPE_GPS, ASUS_WMI_DEVID_GPS);
1121 if (result && result != -ENODEV)
1124 result = asus_new_rfkill(asus, &asus->uwb, "asus-uwb",
1125 RFKILL_TYPE_UWB, ASUS_WMI_DEVID_UWB);
1127 if (result && result != -ENODEV)
1130 if (!asus->driver->quirks->hotplug_wireless)
1133 result = asus_setup_pci_hotplug(asus);
1135 * If we get -EBUSY then something else is handling the PCI hotplug -
1136 * don't fail in this case
1138 if (result == -EBUSY)
1141 asus_register_rfkill_notifier(asus, "\\_SB.PCI0.P0P5");
1142 asus_register_rfkill_notifier(asus, "\\_SB.PCI0.P0P6");
1143 asus_register_rfkill_notifier(asus, "\\_SB.PCI0.P0P7");
1145 * Refresh pci hotplug in case the rfkill state was changed during
1148 asus_rfkill_hotplug(asus);
1151 if (result && result != -ENODEV)
1152 asus_wmi_rfkill_exit(asus);
1154 if (result == -ENODEV)
1160 static void asus_wmi_set_xusb2pr(struct asus_wmi *asus)
1162 struct pci_dev *xhci_pdev;
1163 u32 orig_ports_available;
1164 u32 ports_available = asus->driver->quirks->xusb2pr;
1166 xhci_pdev = pci_get_device(PCI_VENDOR_ID_INTEL,
1167 PCI_DEVICE_ID_INTEL_LYNXPOINT_LP_XHCI,
1173 pci_read_config_dword(xhci_pdev, USB_INTEL_XUSB2PR,
1174 &orig_ports_available);
1176 pci_write_config_dword(xhci_pdev, USB_INTEL_XUSB2PR,
1177 cpu_to_le32(ports_available));
1179 pci_dev_put(xhci_pdev);
1181 pr_info("set USB_INTEL_XUSB2PR old: 0x%04x, new: 0x%04x\n",
1182 orig_ports_available, ports_available);
1186 * Some devices dont support or have borcken get_als method
1187 * but still support set method.
1189 static void asus_wmi_set_als(void)
1191 asus_wmi_set_devstate(ASUS_WMI_DEVID_ALS_ENABLE, 1, NULL);
1197 static int asus_hwmon_agfn_fan_speed_read(struct asus_wmi *asus, int fan,
1200 struct fan_args args = {
1201 .agfn.len = sizeof(args),
1202 .agfn.mfun = ASUS_FAN_MFUN,
1203 .agfn.sfun = ASUS_FAN_SFUN_READ,
1207 struct acpi_buffer input = { (acpi_size) sizeof(args), &args };
1213 status = asus_wmi_evaluate_method_agfn(input);
1215 if (status || args.agfn.err)
1219 *speed = args.speed;
1224 static int asus_hwmon_agfn_fan_speed_write(struct asus_wmi *asus, int fan,
1227 struct fan_args args = {
1228 .agfn.len = sizeof(args),
1229 .agfn.mfun = ASUS_FAN_MFUN,
1230 .agfn.sfun = ASUS_FAN_SFUN_WRITE,
1232 .speed = speed ? *speed : 0,
1234 struct acpi_buffer input = { (acpi_size) sizeof(args), &args };
1237 /* 1: for setting 1st fan's speed 0: setting auto mode */
1238 if (fan != 1 && fan != 0)
1241 status = asus_wmi_evaluate_method_agfn(input);
1243 if (status || args.agfn.err)
1246 if (speed && fan == 1)
1247 asus->asus_hwmon_pwm = *speed;
1253 * Check if we can read the speed of one fan. If true we assume we can also
1256 static int asus_hwmon_get_fan_number(struct asus_wmi *asus, int *num_fans)
1263 status = asus_hwmon_agfn_fan_speed_read(asus, 1, &speed);
1270 static int asus_hwmon_fan_set_auto(struct asus_wmi *asus)
1274 status = asus_hwmon_agfn_fan_speed_write(asus, 0, NULL);
1278 asus->asus_hwmon_fan_manual_mode = false;
1283 static int asus_hwmon_fan_rpm_show(struct device *dev, int fan)
1285 struct asus_wmi *asus = dev_get_drvdata(dev);
1289 /* no speed readable on manual mode */
1290 if (asus->asus_hwmon_fan_manual_mode)
1293 ret = asus_hwmon_agfn_fan_speed_read(asus, fan+1, &value);
1295 pr_warn("reading fan speed failed: %d\n", ret);
1302 static void asus_hwmon_pwm_show(struct asus_wmi *asus, int fan, int *value)
1306 if (asus->asus_hwmon_pwm >= 0) {
1307 *value = asus->asus_hwmon_pwm;
1311 err = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_FAN_CTRL, value);
1317 if (*value == 1) /* Low Speed */
1319 else if (*value == 2)
1321 else if (*value == 3)
1324 pr_err("Unknown fan speed %#x\n", *value);
1329 static ssize_t pwm1_show(struct device *dev,
1330 struct device_attribute *attr,
1333 struct asus_wmi *asus = dev_get_drvdata(dev);
1336 asus_hwmon_pwm_show(asus, 0, &value);
1338 return sprintf(buf, "%d\n", value);
1341 static ssize_t pwm1_store(struct device *dev,
1342 struct device_attribute *attr,
1343 const char *buf, size_t count) {
1344 struct asus_wmi *asus = dev_get_drvdata(dev);
1349 ret = kstrtouint(buf, 10, &value);
1354 value = clamp(value, 0, 255);
1356 state = asus_hwmon_agfn_fan_speed_write(asus, 1, &value);
1358 pr_warn("Setting fan speed failed: %d\n", state);
1360 asus->asus_hwmon_fan_manual_mode = true;
1365 static ssize_t fan1_input_show(struct device *dev,
1366 struct device_attribute *attr,
1369 int value = asus_hwmon_fan_rpm_show(dev, 0);
1371 return sprintf(buf, "%d\n", value < 0 ? -1 : value*100);
1375 static ssize_t pwm1_enable_show(struct device *dev,
1376 struct device_attribute *attr,
1379 struct asus_wmi *asus = dev_get_drvdata(dev);
1381 if (asus->asus_hwmon_fan_manual_mode)
1382 return sprintf(buf, "%d\n", ASUS_FAN_CTRL_MANUAL);
1384 return sprintf(buf, "%d\n", ASUS_FAN_CTRL_AUTO);
1387 static ssize_t pwm1_enable_store(struct device *dev,
1388 struct device_attribute *attr,
1389 const char *buf, size_t count)
1391 struct asus_wmi *asus = dev_get_drvdata(dev);
1396 ret = kstrtouint(buf, 10, &state);
1401 if (state == ASUS_FAN_CTRL_MANUAL)
1402 asus->asus_hwmon_fan_manual_mode = true;
1404 status = asus_hwmon_fan_set_auto(asus);
1412 static ssize_t fan1_label_show(struct device *dev,
1413 struct device_attribute *attr,
1416 return sprintf(buf, "%s\n", ASUS_FAN_DESC);
1419 static ssize_t asus_hwmon_temp1(struct device *dev,
1420 struct device_attribute *attr,
1423 struct asus_wmi *asus = dev_get_drvdata(dev);
1427 err = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_THERMAL_CTRL, &value);
1432 value = DECI_KELVIN_TO_CELSIUS((value & 0xFFFF)) * 1000;
1434 return sprintf(buf, "%d\n", value);
1438 static DEVICE_ATTR_RW(pwm1);
1439 static DEVICE_ATTR_RW(pwm1_enable);
1440 static DEVICE_ATTR_RO(fan1_input);
1441 static DEVICE_ATTR_RO(fan1_label);
1444 static DEVICE_ATTR(temp1_input, S_IRUGO, asus_hwmon_temp1, NULL);
1446 static struct attribute *hwmon_attributes[] = {
1447 &dev_attr_pwm1.attr,
1448 &dev_attr_pwm1_enable.attr,
1449 &dev_attr_fan1_input.attr,
1450 &dev_attr_fan1_label.attr,
1452 &dev_attr_temp1_input.attr,
1456 static umode_t asus_hwmon_sysfs_is_visible(struct kobject *kobj,
1457 struct attribute *attr, int idx)
1459 struct device *dev = container_of(kobj, struct device, kobj);
1460 struct platform_device *pdev = to_platform_device(dev->parent);
1461 struct asus_wmi *asus = platform_get_drvdata(pdev);
1464 u32 value = ASUS_WMI_UNSUPPORTED_METHOD;
1467 if (attr == &dev_attr_pwm1.attr)
1468 dev_id = ASUS_WMI_DEVID_FAN_CTRL;
1469 else if (attr == &dev_attr_temp1_input.attr)
1470 dev_id = ASUS_WMI_DEVID_THERMAL_CTRL;
1473 if (attr == &dev_attr_fan1_input.attr
1474 || attr == &dev_attr_fan1_label.attr
1475 || attr == &dev_attr_pwm1.attr
1476 || attr == &dev_attr_pwm1_enable.attr) {
1481 int err = asus_wmi_get_devstate(asus, dev_id, &value);
1483 if (err < 0 && fan_attr == -1)
1484 return 0; /* can't return negative here */
1487 if (dev_id == ASUS_WMI_DEVID_FAN_CTRL) {
1489 * We need to find a better way, probably using sfun,
1491 * Currently we disable it if:
1492 * - ASUS_WMI_UNSUPPORTED_METHOD is returned
1493 * - reverved bits are non-zero
1494 * - sfun and presence bit are not set
1496 if (value == ASUS_WMI_UNSUPPORTED_METHOD || value & 0xFFF80000
1497 || (!asus->sfun && !(value & ASUS_WMI_DSTS_PRESENCE_BIT)))
1500 ok = fan_attr <= asus->asus_hwmon_num_fans;
1501 } else if (dev_id == ASUS_WMI_DEVID_THERMAL_CTRL) {
1502 /* If value is zero, something is clearly wrong */
1505 } else if (fan_attr <= asus->asus_hwmon_num_fans && fan_attr != -1) {
1511 return ok ? attr->mode : 0;
1514 static const struct attribute_group hwmon_attribute_group = {
1515 .is_visible = asus_hwmon_sysfs_is_visible,
1516 .attrs = hwmon_attributes
1518 __ATTRIBUTE_GROUPS(hwmon_attribute);
1520 static int asus_wmi_hwmon_init(struct asus_wmi *asus)
1522 struct device *hwmon;
1524 hwmon = hwmon_device_register_with_groups(&asus->platform_device->dev,
1526 hwmon_attribute_groups);
1527 if (IS_ERR(hwmon)) {
1528 pr_err("Could not register asus hwmon device\n");
1529 return PTR_ERR(hwmon);
1537 static int read_backlight_power(struct asus_wmi *asus)
1540 if (asus->driver->quirks->store_backlight_power)
1541 ret = !asus->driver->panel_power;
1543 ret = asus_wmi_get_devstate_simple(asus,
1544 ASUS_WMI_DEVID_BACKLIGHT);
1549 return ret ? FB_BLANK_UNBLANK : FB_BLANK_POWERDOWN;
1552 static int read_brightness_max(struct asus_wmi *asus)
1557 err = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_BRIGHTNESS, &retval);
1562 retval = retval & ASUS_WMI_DSTS_MAX_BRIGTH_MASK;
1571 static int read_brightness(struct backlight_device *bd)
1573 struct asus_wmi *asus = bl_get_data(bd);
1577 err = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_BRIGHTNESS, &retval);
1582 return retval & ASUS_WMI_DSTS_BRIGHTNESS_MASK;
1585 static u32 get_scalar_command(struct backlight_device *bd)
1587 struct asus_wmi *asus = bl_get_data(bd);
1590 if ((asus->driver->brightness < bd->props.brightness) ||
1591 bd->props.brightness == bd->props.max_brightness)
1592 ctrl_param = 0x00008001;
1593 else if ((asus->driver->brightness > bd->props.brightness) ||
1594 bd->props.brightness == 0)
1595 ctrl_param = 0x00008000;
1597 asus->driver->brightness = bd->props.brightness;
1602 static int update_bl_status(struct backlight_device *bd)
1604 struct asus_wmi *asus = bl_get_data(bd);
1608 power = read_backlight_power(asus);
1609 if (power != -ENODEV && bd->props.power != power) {
1610 ctrl_param = !!(bd->props.power == FB_BLANK_UNBLANK);
1611 err = asus_wmi_set_devstate(ASUS_WMI_DEVID_BACKLIGHT,
1613 if (asus->driver->quirks->store_backlight_power)
1614 asus->driver->panel_power = bd->props.power;
1616 /* When using scalar brightness, updating the brightness
1617 * will mess with the backlight power */
1618 if (asus->driver->quirks->scalar_panel_brightness)
1622 if (asus->driver->quirks->scalar_panel_brightness)
1623 ctrl_param = get_scalar_command(bd);
1625 ctrl_param = bd->props.brightness;
1627 err = asus_wmi_set_devstate(ASUS_WMI_DEVID_BRIGHTNESS,
1633 static const struct backlight_ops asus_wmi_bl_ops = {
1634 .get_brightness = read_brightness,
1635 .update_status = update_bl_status,
1638 static int asus_wmi_backlight_notify(struct asus_wmi *asus, int code)
1640 struct backlight_device *bd = asus->backlight_device;
1641 int old = bd->props.brightness;
1644 if (code >= NOTIFY_BRNUP_MIN && code <= NOTIFY_BRNUP_MAX)
1645 new = code - NOTIFY_BRNUP_MIN + 1;
1646 else if (code >= NOTIFY_BRNDOWN_MIN && code <= NOTIFY_BRNDOWN_MAX)
1647 new = code - NOTIFY_BRNDOWN_MIN;
1649 bd->props.brightness = new;
1650 backlight_update_status(bd);
1651 backlight_force_update(bd, BACKLIGHT_UPDATE_HOTKEY);
1656 static int asus_wmi_backlight_init(struct asus_wmi *asus)
1658 struct backlight_device *bd;
1659 struct backlight_properties props;
1663 max = read_brightness_max(asus);
1667 power = read_backlight_power(asus);
1669 if (power == -ENODEV)
1670 power = FB_BLANK_UNBLANK;
1674 memset(&props, 0, sizeof(struct backlight_properties));
1675 props.type = BACKLIGHT_PLATFORM;
1676 props.max_brightness = max;
1677 bd = backlight_device_register(asus->driver->name,
1678 &asus->platform_device->dev, asus,
1679 &asus_wmi_bl_ops, &props);
1681 pr_err("Could not register backlight device\n");
1685 asus->backlight_device = bd;
1687 if (asus->driver->quirks->store_backlight_power)
1688 asus->driver->panel_power = power;
1690 bd->props.brightness = read_brightness(bd);
1691 bd->props.power = power;
1692 backlight_update_status(bd);
1694 asus->driver->brightness = bd->props.brightness;
1699 static void asus_wmi_backlight_exit(struct asus_wmi *asus)
1701 backlight_device_unregister(asus->backlight_device);
1703 asus->backlight_device = NULL;
1706 static int is_display_toggle(int code)
1708 /* display toggle keys */
1709 if ((code >= 0x61 && code <= 0x67) ||
1710 (code >= 0x8c && code <= 0x93) ||
1711 (code >= 0xa0 && code <= 0xa7) ||
1712 (code >= 0xd0 && code <= 0xd5))
1718 static void asus_wmi_notify(u32 value, void *context)
1720 struct asus_wmi *asus = context;
1721 struct acpi_buffer response = { ACPI_ALLOCATE_BUFFER, NULL };
1722 union acpi_object *obj;
1726 unsigned int key_value = 1;
1727 bool autorelease = 1;
1729 status = wmi_get_event_data(value, &response);
1730 if (status != AE_OK) {
1731 pr_err("bad event status 0x%x\n", status);
1735 obj = (union acpi_object *)response.pointer;
1737 if (!obj || obj->type != ACPI_TYPE_INTEGER)
1740 code = obj->integer.value;
1743 if (asus->driver->key_filter) {
1744 asus->driver->key_filter(asus->driver, &code, &key_value,
1746 if (code == ASUS_WMI_KEY_IGNORE)
1750 if (code >= NOTIFY_BRNUP_MIN && code <= NOTIFY_BRNUP_MAX)
1751 code = ASUS_WMI_BRN_UP;
1752 else if (code >= NOTIFY_BRNDOWN_MIN &&
1753 code <= NOTIFY_BRNDOWN_MAX)
1754 code = ASUS_WMI_BRN_DOWN;
1756 if (code == ASUS_WMI_BRN_DOWN || code == ASUS_WMI_BRN_UP) {
1757 if (acpi_video_get_backlight_type() == acpi_backlight_vendor) {
1758 asus_wmi_backlight_notify(asus, orig_code);
1763 if (code == NOTIFY_KBD_BRTUP) {
1764 do_kbd_led_set(&asus->kbd_led, asus->kbd_led_wk + 1);
1767 if (code == NOTIFY_KBD_BRTDWN) {
1768 do_kbd_led_set(&asus->kbd_led, asus->kbd_led_wk - 1);
1771 if (code == NOTIFY_KBD_BRTTOGGLE) {
1772 if (asus->kbd_led_wk == asus->kbd_led.max_brightness)
1773 do_kbd_led_set(&asus->kbd_led, 0);
1775 do_kbd_led_set(&asus->kbd_led, asus->kbd_led_wk + 1);
1779 if (is_display_toggle(code) &&
1780 asus->driver->quirks->no_display_toggle)
1783 if (!sparse_keymap_report_event(asus->inputdev, code,
1784 key_value, autorelease))
1785 pr_info("Unknown key %x pressed\n", code);
1794 static int parse_arg(const char *buf, unsigned long count, int *val)
1798 if (sscanf(buf, "%i", val) != 1)
1803 static ssize_t store_sys_wmi(struct asus_wmi *asus, int devid,
1804 const char *buf, size_t count)
1809 value = asus_wmi_get_devstate_simple(asus, devid);
1813 rv = parse_arg(buf, count, &value);
1814 err = asus_wmi_set_devstate(devid, value, &retval);
1822 static ssize_t show_sys_wmi(struct asus_wmi *asus, int devid, char *buf)
1824 int value = asus_wmi_get_devstate_simple(asus, devid);
1829 return sprintf(buf, "%d\n", value);
1832 #define ASUS_WMI_CREATE_DEVICE_ATTR(_name, _mode, _cm) \
1833 static ssize_t show_##_name(struct device *dev, \
1834 struct device_attribute *attr, \
1837 struct asus_wmi *asus = dev_get_drvdata(dev); \
1839 return show_sys_wmi(asus, _cm, buf); \
1841 static ssize_t store_##_name(struct device *dev, \
1842 struct device_attribute *attr, \
1843 const char *buf, size_t count) \
1845 struct asus_wmi *asus = dev_get_drvdata(dev); \
1847 return store_sys_wmi(asus, _cm, buf, count); \
1849 static struct device_attribute dev_attr_##_name = { \
1851 .name = __stringify(_name), \
1853 .show = show_##_name, \
1854 .store = store_##_name, \
1857 ASUS_WMI_CREATE_DEVICE_ATTR(touchpad, 0644, ASUS_WMI_DEVID_TOUCHPAD);
1858 ASUS_WMI_CREATE_DEVICE_ATTR(camera, 0644, ASUS_WMI_DEVID_CAMERA);
1859 ASUS_WMI_CREATE_DEVICE_ATTR(cardr, 0644, ASUS_WMI_DEVID_CARDREADER);
1860 ASUS_WMI_CREATE_DEVICE_ATTR(lid_resume, 0644, ASUS_WMI_DEVID_LID_RESUME);
1861 ASUS_WMI_CREATE_DEVICE_ATTR(als_enable, 0644, ASUS_WMI_DEVID_ALS_ENABLE);
1863 static ssize_t cpufv_store(struct device *dev, struct device_attribute *attr,
1864 const char *buf, size_t count)
1868 if (!count || sscanf(buf, "%i", &value) != 1)
1870 if (value < 0 || value > 2)
1873 rv = asus_wmi_evaluate_method(ASUS_WMI_METHODID_CFVS, value, 0, NULL);
1880 static DEVICE_ATTR_WO(cpufv);
1882 static struct attribute *platform_attributes[] = {
1883 &dev_attr_cpufv.attr,
1884 &dev_attr_camera.attr,
1885 &dev_attr_cardr.attr,
1886 &dev_attr_touchpad.attr,
1887 &dev_attr_lid_resume.attr,
1888 &dev_attr_als_enable.attr,
1892 static umode_t asus_sysfs_is_visible(struct kobject *kobj,
1893 struct attribute *attr, int idx)
1895 struct device *dev = container_of(kobj, struct device, kobj);
1896 struct asus_wmi *asus = dev_get_drvdata(dev);
1900 if (attr == &dev_attr_camera.attr)
1901 devid = ASUS_WMI_DEVID_CAMERA;
1902 else if (attr == &dev_attr_cardr.attr)
1903 devid = ASUS_WMI_DEVID_CARDREADER;
1904 else if (attr == &dev_attr_touchpad.attr)
1905 devid = ASUS_WMI_DEVID_TOUCHPAD;
1906 else if (attr == &dev_attr_lid_resume.attr)
1907 devid = ASUS_WMI_DEVID_LID_RESUME;
1908 else if (attr == &dev_attr_als_enable.attr)
1909 devid = ASUS_WMI_DEVID_ALS_ENABLE;
1912 ok = !(asus_wmi_get_devstate_simple(asus, devid) < 0);
1914 return ok ? attr->mode : 0;
1917 static const struct attribute_group platform_attribute_group = {
1918 .is_visible = asus_sysfs_is_visible,
1919 .attrs = platform_attributes
1922 static void asus_wmi_sysfs_exit(struct platform_device *device)
1924 sysfs_remove_group(&device->dev.kobj, &platform_attribute_group);
1927 static int asus_wmi_sysfs_init(struct platform_device *device)
1929 return sysfs_create_group(&device->dev.kobj, &platform_attribute_group);
1935 static int asus_wmi_platform_init(struct asus_wmi *asus)
1939 /* INIT enable hotkeys on some models */
1940 if (!asus_wmi_evaluate_method(ASUS_WMI_METHODID_INIT, 0, 0, &rv))
1941 pr_info("Initialization: %#x\n", rv);
1943 /* We don't know yet what to do with this version... */
1944 if (!asus_wmi_evaluate_method(ASUS_WMI_METHODID_SPEC, 0, 0x9, &rv)) {
1945 pr_info("BIOS WMI version: %d.%d\n", rv >> 16, rv & 0xFF);
1950 * The SFUN method probably allows the original driver to get the list
1951 * of features supported by a given model. For now, 0x0100 or 0x0800
1952 * bit signifies that the laptop is equipped with a Wi-Fi MiniPCI card.
1953 * The significance of others is yet to be found.
1955 if (!asus_wmi_evaluate_method(ASUS_WMI_METHODID_SFUN, 0, 0, &rv)) {
1956 pr_info("SFUN value: %#x\n", rv);
1961 * Eee PC and Notebooks seems to have different method_id for DSTS,
1962 * but it may also be related to the BIOS's SPEC.
1963 * Note, on most Eeepc, there is no way to check if a method exist
1964 * or note, while on notebooks, they returns 0xFFFFFFFE on failure,
1965 * but once again, SPEC may probably be used for that kind of things.
1967 if (!asus_wmi_evaluate_method(ASUS_WMI_METHODID_DSTS, 0, 0, NULL))
1968 asus->dsts_id = ASUS_WMI_METHODID_DSTS;
1970 asus->dsts_id = ASUS_WMI_METHODID_DSTS2;
1972 /* CWAP allow to define the behavior of the Fn+F2 key,
1973 * this method doesn't seems to be present on Eee PCs */
1974 if (asus->driver->quirks->wapf >= 0)
1975 asus_wmi_set_devstate(ASUS_WMI_DEVID_CWAP,
1976 asus->driver->quirks->wapf, NULL);
1978 return asus_wmi_sysfs_init(asus->platform_device);
1981 static void asus_wmi_platform_exit(struct asus_wmi *asus)
1983 asus_wmi_sysfs_exit(asus->platform_device);
1989 struct asus_wmi_debugfs_node {
1990 struct asus_wmi *asus;
1992 int (*show) (struct seq_file *m, void *data);
1995 static int show_dsts(struct seq_file *m, void *data)
1997 struct asus_wmi *asus = m->private;
2001 err = asus_wmi_get_devstate(asus, asus->debug.dev_id, &retval);
2006 seq_printf(m, "DSTS(%#x) = %#x\n", asus->debug.dev_id, retval);
2011 static int show_devs(struct seq_file *m, void *data)
2013 struct asus_wmi *asus = m->private;
2017 err = asus_wmi_set_devstate(asus->debug.dev_id, asus->debug.ctrl_param,
2023 seq_printf(m, "DEVS(%#x, %#x) = %#x\n", asus->debug.dev_id,
2024 asus->debug.ctrl_param, retval);
2029 static int show_call(struct seq_file *m, void *data)
2031 struct asus_wmi *asus = m->private;
2032 struct bios_args args = {
2033 .arg0 = asus->debug.dev_id,
2034 .arg1 = asus->debug.ctrl_param,
2036 struct acpi_buffer input = { (acpi_size) sizeof(args), &args };
2037 struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
2038 union acpi_object *obj;
2041 status = wmi_evaluate_method(ASUS_WMI_MGMT_GUID,
2042 0, asus->debug.method_id,
2045 if (ACPI_FAILURE(status))
2048 obj = (union acpi_object *)output.pointer;
2049 if (obj && obj->type == ACPI_TYPE_INTEGER)
2050 seq_printf(m, "%#x(%#x, %#x) = %#x\n", asus->debug.method_id,
2051 asus->debug.dev_id, asus->debug.ctrl_param,
2052 (u32) obj->integer.value);
2054 seq_printf(m, "%#x(%#x, %#x) = t:%d\n", asus->debug.method_id,
2055 asus->debug.dev_id, asus->debug.ctrl_param,
2056 obj ? obj->type : -1);
2063 static struct asus_wmi_debugfs_node asus_wmi_debug_files[] = {
2064 {NULL, "devs", show_devs},
2065 {NULL, "dsts", show_dsts},
2066 {NULL, "call", show_call},
2069 static int asus_wmi_debugfs_open(struct inode *inode, struct file *file)
2071 struct asus_wmi_debugfs_node *node = inode->i_private;
2073 return single_open(file, node->show, node->asus);
2076 static const struct file_operations asus_wmi_debugfs_io_ops = {
2077 .owner = THIS_MODULE,
2078 .open = asus_wmi_debugfs_open,
2080 .llseek = seq_lseek,
2081 .release = single_release,
2084 static void asus_wmi_debugfs_exit(struct asus_wmi *asus)
2086 debugfs_remove_recursive(asus->debug.root);
2089 static int asus_wmi_debugfs_init(struct asus_wmi *asus)
2091 struct dentry *dent;
2094 asus->debug.root = debugfs_create_dir(asus->driver->name, NULL);
2095 if (!asus->debug.root) {
2096 pr_err("failed to create debugfs directory\n");
2100 dent = debugfs_create_x32("method_id", S_IRUGO | S_IWUSR,
2101 asus->debug.root, &asus->debug.method_id);
2105 dent = debugfs_create_x32("dev_id", S_IRUGO | S_IWUSR,
2106 asus->debug.root, &asus->debug.dev_id);
2110 dent = debugfs_create_x32("ctrl_param", S_IRUGO | S_IWUSR,
2111 asus->debug.root, &asus->debug.ctrl_param);
2115 for (i = 0; i < ARRAY_SIZE(asus_wmi_debug_files); i++) {
2116 struct asus_wmi_debugfs_node *node = &asus_wmi_debug_files[i];
2119 dent = debugfs_create_file(node->name, S_IFREG | S_IRUGO,
2120 asus->debug.root, node,
2121 &asus_wmi_debugfs_io_ops);
2123 pr_err("failed to create debug file: %s\n", node->name);
2131 asus_wmi_debugfs_exit(asus);
2135 static int asus_wmi_fan_init(struct asus_wmi *asus)
2139 asus->asus_hwmon_pwm = -1;
2140 asus->asus_hwmon_num_fans = -1;
2141 asus->asus_hwmon_fan_manual_mode = false;
2143 status = asus_hwmon_get_fan_number(asus, &asus->asus_hwmon_num_fans);
2145 asus->asus_hwmon_num_fans = 0;
2146 pr_warn("Could not determine number of fans: %d\n", status);
2150 pr_info("Number of fans: %d\n", asus->asus_hwmon_num_fans);
2157 static int asus_wmi_add(struct platform_device *pdev)
2159 struct platform_driver *pdrv = to_platform_driver(pdev->dev.driver);
2160 struct asus_wmi_driver *wdrv = to_asus_wmi_driver(pdrv);
2161 struct asus_wmi *asus;
2162 const char *chassis_type;
2167 asus = kzalloc(sizeof(struct asus_wmi), GFP_KERNEL);
2171 asus->driver = wdrv;
2172 asus->platform_device = pdev;
2173 wdrv->platform_device = pdev;
2174 platform_set_drvdata(asus->platform_device, asus);
2176 if (wdrv->detect_quirks)
2177 wdrv->detect_quirks(asus->driver);
2179 err = asus_wmi_platform_init(asus);
2183 err = asus_wmi_input_init(asus);
2187 err = asus_wmi_fan_init(asus); /* probably no problems on error */
2188 asus_hwmon_fan_set_auto(asus);
2190 err = asus_wmi_hwmon_init(asus);
2194 err = asus_wmi_led_init(asus);
2198 asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_WLAN, &result);
2199 if (result & (ASUS_WMI_DSTS_PRESENCE_BIT | ASUS_WMI_DSTS_USER_BIT))
2200 asus->driver->wlan_ctrl_by_user = 1;
2202 if (!(asus->driver->wlan_ctrl_by_user && ashs_present())) {
2203 err = asus_wmi_rfkill_init(asus);
2208 if (asus->driver->quirks->wmi_force_als_set)
2211 /* Some Asus desktop boards export an acpi-video backlight interface,
2212 stop this from showing up */
2213 chassis_type = dmi_get_system_info(DMI_CHASSIS_TYPE);
2214 if (chassis_type && !strcmp(chassis_type, "3"))
2215 acpi_video_set_dmi_backlight_type(acpi_backlight_vendor);
2217 if (asus->driver->quirks->wmi_backlight_power)
2218 acpi_video_set_dmi_backlight_type(acpi_backlight_vendor);
2220 if (asus->driver->quirks->wmi_backlight_native)
2221 acpi_video_set_dmi_backlight_type(acpi_backlight_native);
2223 if (asus->driver->quirks->xusb2pr)
2224 asus_wmi_set_xusb2pr(asus);
2226 if (acpi_video_get_backlight_type() == acpi_backlight_vendor) {
2227 err = asus_wmi_backlight_init(asus);
2228 if (err && err != -ENODEV)
2229 goto fail_backlight;
2230 } else if (asus->driver->quirks->wmi_backlight_set_devstate)
2231 err = asus_wmi_set_devstate(ASUS_WMI_DEVID_BACKLIGHT, 2, NULL);
2233 status = wmi_install_notify_handler(asus->driver->event_guid,
2234 asus_wmi_notify, asus);
2235 if (ACPI_FAILURE(status)) {
2236 pr_err("Unable to register notify handler - %d\n", status);
2238 goto fail_wmi_handler;
2241 err = asus_wmi_debugfs_init(asus);
2248 wmi_remove_notify_handler(asus->driver->event_guid);
2250 asus_wmi_backlight_exit(asus);
2252 asus_wmi_rfkill_exit(asus);
2254 asus_wmi_led_exit(asus);
2257 asus_wmi_input_exit(asus);
2259 asus_wmi_platform_exit(asus);
2265 static int asus_wmi_remove(struct platform_device *device)
2267 struct asus_wmi *asus;
2269 asus = platform_get_drvdata(device);
2270 wmi_remove_notify_handler(asus->driver->event_guid);
2271 asus_wmi_backlight_exit(asus);
2272 asus_wmi_input_exit(asus);
2273 asus_wmi_led_exit(asus);
2274 asus_wmi_rfkill_exit(asus);
2275 asus_wmi_debugfs_exit(asus);
2276 asus_wmi_platform_exit(asus);
2277 asus_hwmon_fan_set_auto(asus);
2284 * Platform driver - hibernate/resume callbacks
2286 static int asus_hotk_thaw(struct device *device)
2288 struct asus_wmi *asus = dev_get_drvdata(device);
2290 if (asus->wlan.rfkill) {
2294 * Work around bios bug - acpi _PTS turns off the wireless led
2295 * during suspend. Normally it restores it on resume, but
2296 * we should kick it ourselves in case hibernation is aborted.
2298 wlan = asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WLAN);
2299 asus_wmi_set_devstate(ASUS_WMI_DEVID_WLAN, wlan, NULL);
2305 static int asus_hotk_resume(struct device *device)
2307 struct asus_wmi *asus = dev_get_drvdata(device);
2309 if (!IS_ERR_OR_NULL(asus->kbd_led.dev))
2310 queue_work(asus->led_workqueue, &asus->kbd_led_work);
2315 static int asus_hotk_restore(struct device *device)
2317 struct asus_wmi *asus = dev_get_drvdata(device);
2320 /* Refresh both wlan rfkill state and pci hotplug */
2321 if (asus->wlan.rfkill)
2322 asus_rfkill_hotplug(asus);
2324 if (asus->bluetooth.rfkill) {
2325 bl = !asus_wmi_get_devstate_simple(asus,
2326 ASUS_WMI_DEVID_BLUETOOTH);
2327 rfkill_set_sw_state(asus->bluetooth.rfkill, bl);
2329 if (asus->wimax.rfkill) {
2330 bl = !asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WIMAX);
2331 rfkill_set_sw_state(asus->wimax.rfkill, bl);
2333 if (asus->wwan3g.rfkill) {
2334 bl = !asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WWAN3G);
2335 rfkill_set_sw_state(asus->wwan3g.rfkill, bl);
2337 if (asus->gps.rfkill) {
2338 bl = !asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_GPS);
2339 rfkill_set_sw_state(asus->gps.rfkill, bl);
2341 if (asus->uwb.rfkill) {
2342 bl = !asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_UWB);
2343 rfkill_set_sw_state(asus->uwb.rfkill, bl);
2345 if (!IS_ERR_OR_NULL(asus->kbd_led.dev))
2346 queue_work(asus->led_workqueue, &asus->kbd_led_work);
2351 static const struct dev_pm_ops asus_pm_ops = {
2352 .thaw = asus_hotk_thaw,
2353 .restore = asus_hotk_restore,
2354 .resume = asus_hotk_resume,
2357 static int asus_wmi_probe(struct platform_device *pdev)
2359 struct platform_driver *pdrv = to_platform_driver(pdev->dev.driver);
2360 struct asus_wmi_driver *wdrv = to_asus_wmi_driver(pdrv);
2363 if (!wmi_has_guid(ASUS_WMI_MGMT_GUID)) {
2364 pr_warn("Management GUID not found\n");
2368 if (wdrv->event_guid && !wmi_has_guid(wdrv->event_guid)) {
2369 pr_warn("Event GUID not found\n");
2374 ret = wdrv->probe(pdev);
2379 return asus_wmi_add(pdev);
2384 int __init_or_module asus_wmi_register_driver(struct asus_wmi_driver *driver)
2386 struct platform_driver *platform_driver;
2387 struct platform_device *platform_device;
2392 platform_driver = &driver->platform_driver;
2393 platform_driver->remove = asus_wmi_remove;
2394 platform_driver->driver.owner = driver->owner;
2395 platform_driver->driver.name = driver->name;
2396 platform_driver->driver.pm = &asus_pm_ops;
2398 platform_device = platform_create_bundle(platform_driver,
2401 if (IS_ERR(platform_device))
2402 return PTR_ERR(platform_device);
2407 EXPORT_SYMBOL_GPL(asus_wmi_register_driver);
2409 void asus_wmi_unregister_driver(struct asus_wmi_driver *driver)
2411 platform_device_unregister(driver->platform_device);
2412 platform_driver_unregister(&driver->platform_driver);
2415 EXPORT_SYMBOL_GPL(asus_wmi_unregister_driver);
2417 static int __init asus_wmi_init(void)
2419 if (!wmi_has_guid(ASUS_WMI_MGMT_GUID)) {
2420 pr_info("Asus Management GUID not found\n");
2424 pr_info("ASUS WMI generic driver loaded\n");
2428 static void __exit asus_wmi_exit(void)
2430 pr_info("ASUS WMI generic driver unloaded\n");
2433 module_init(asus_wmi_init);
2434 module_exit(asus_wmi_exit);