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);
468 * bit 7: light on/off
470 if (asus->kbd_led_wk > 0)
471 ctrl_param = 0x80 | (asus->kbd_led_wk & 0x7F);
473 asus_wmi_set_devstate(ASUS_WMI_DEVID_KBD_BACKLIGHT, ctrl_param, NULL);
474 led_classdev_notify_brightness_hw_changed(&asus->kbd_led, asus->kbd_led_wk);
477 static int kbd_led_read(struct asus_wmi *asus, int *level, int *env)
483 * bit 7: light on/off
484 * bit 8-10: environment (0: dark, 1: normal, 2: light)
485 * bit 17: status unknown
487 retval = asus_wmi_get_devstate_bits(asus, ASUS_WMI_DEVID_KBD_BACKLIGHT,
490 /* Unknown status is considered as off */
491 if (retval == 0x8000)
496 *level = retval & 0x7F;
498 *env = (retval >> 8) & 0x7F;
505 static void do_kbd_led_set(struct led_classdev *led_cdev, int value)
507 struct asus_wmi *asus;
510 asus = container_of(led_cdev, struct asus_wmi, kbd_led);
511 max_level = asus->kbd_led.max_brightness;
513 if (value > max_level)
518 asus->kbd_led_wk = value;
519 queue_work(asus->led_workqueue, &asus->kbd_led_work);
522 static void kbd_led_set(struct led_classdev *led_cdev,
523 enum led_brightness value)
525 do_kbd_led_set(led_cdev, value);
528 static enum led_brightness kbd_led_get(struct led_classdev *led_cdev)
530 struct asus_wmi *asus;
533 asus = container_of(led_cdev, struct asus_wmi, kbd_led);
535 retval = kbd_led_read(asus, &value, NULL);
543 static int wlan_led_unknown_state(struct asus_wmi *asus)
547 asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_WIRELESS_LED, &result);
549 return result & ASUS_WMI_DSTS_UNKNOWN_BIT;
552 static int wlan_led_presence(struct asus_wmi *asus)
556 asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_WIRELESS_LED, &result);
558 return result & ASUS_WMI_DSTS_PRESENCE_BIT;
561 static void wlan_led_update(struct work_struct *work)
564 struct asus_wmi *asus;
566 asus = container_of(work, struct asus_wmi, wlan_led_work);
568 ctrl_param = asus->wlan_led_wk;
569 asus_wmi_set_devstate(ASUS_WMI_DEVID_WIRELESS_LED, ctrl_param, NULL);
572 static void wlan_led_set(struct led_classdev *led_cdev,
573 enum led_brightness value)
575 struct asus_wmi *asus;
577 asus = container_of(led_cdev, struct asus_wmi, wlan_led);
579 asus->wlan_led_wk = !!value;
580 queue_work(asus->led_workqueue, &asus->wlan_led_work);
583 static enum led_brightness wlan_led_get(struct led_classdev *led_cdev)
585 struct asus_wmi *asus;
588 asus = container_of(led_cdev, struct asus_wmi, wlan_led);
589 asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_WIRELESS_LED, &result);
591 return result & ASUS_WMI_DSTS_BRIGHTNESS_MASK;
594 static void lightbar_led_update(struct work_struct *work)
596 struct asus_wmi *asus;
599 asus = container_of(work, struct asus_wmi, lightbar_led_work);
601 ctrl_param = asus->lightbar_led_wk;
602 asus_wmi_set_devstate(ASUS_WMI_DEVID_LIGHTBAR, ctrl_param, NULL);
605 static void lightbar_led_set(struct led_classdev *led_cdev,
606 enum led_brightness value)
608 struct asus_wmi *asus;
610 asus = container_of(led_cdev, struct asus_wmi, lightbar_led);
612 asus->lightbar_led_wk = !!value;
613 queue_work(asus->led_workqueue, &asus->lightbar_led_work);
616 static enum led_brightness lightbar_led_get(struct led_classdev *led_cdev)
618 struct asus_wmi *asus;
621 asus = container_of(led_cdev, struct asus_wmi, lightbar_led);
622 asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_LIGHTBAR, &result);
624 return result & ASUS_WMI_DSTS_LIGHTBAR_MASK;
627 static int lightbar_led_presence(struct asus_wmi *asus)
631 asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_LIGHTBAR, &result);
633 return result & ASUS_WMI_DSTS_PRESENCE_BIT;
636 static void asus_wmi_led_exit(struct asus_wmi *asus)
638 if (!IS_ERR_OR_NULL(asus->kbd_led.dev))
639 led_classdev_unregister(&asus->kbd_led);
640 if (!IS_ERR_OR_NULL(asus->tpd_led.dev))
641 led_classdev_unregister(&asus->tpd_led);
642 if (!IS_ERR_OR_NULL(asus->wlan_led.dev))
643 led_classdev_unregister(&asus->wlan_led);
644 if (!IS_ERR_OR_NULL(asus->lightbar_led.dev))
645 led_classdev_unregister(&asus->lightbar_led);
646 if (asus->led_workqueue)
647 destroy_workqueue(asus->led_workqueue);
650 static int asus_wmi_led_init(struct asus_wmi *asus)
654 asus->led_workqueue = create_singlethread_workqueue("led_workqueue");
655 if (!asus->led_workqueue)
658 if (read_tpd_led_state(asus) >= 0) {
659 INIT_WORK(&asus->tpd_led_work, tpd_led_update);
661 asus->tpd_led.name = "asus::touchpad";
662 asus->tpd_led.brightness_set = tpd_led_set;
663 asus->tpd_led.brightness_get = tpd_led_get;
664 asus->tpd_led.max_brightness = 1;
666 rv = led_classdev_register(&asus->platform_device->dev,
672 led_val = kbd_led_read(asus, NULL, NULL);
674 INIT_WORK(&asus->kbd_led_work, kbd_led_update);
676 asus->kbd_led_wk = led_val;
677 asus->kbd_led.name = "asus::kbd_backlight";
678 asus->kbd_led.flags = LED_BRIGHT_HW_CHANGED;
679 asus->kbd_led.brightness_set = kbd_led_set;
680 asus->kbd_led.brightness_get = kbd_led_get;
681 asus->kbd_led.max_brightness = 3;
683 rv = led_classdev_register(&asus->platform_device->dev,
689 if (wlan_led_presence(asus) && (asus->driver->quirks->wapf > 0)) {
690 INIT_WORK(&asus->wlan_led_work, wlan_led_update);
692 asus->wlan_led.name = "asus::wlan";
693 asus->wlan_led.brightness_set = wlan_led_set;
694 if (!wlan_led_unknown_state(asus))
695 asus->wlan_led.brightness_get = wlan_led_get;
696 asus->wlan_led.flags = LED_CORE_SUSPENDRESUME;
697 asus->wlan_led.max_brightness = 1;
698 asus->wlan_led.default_trigger = "asus-wlan";
700 rv = led_classdev_register(&asus->platform_device->dev,
706 if (lightbar_led_presence(asus)) {
707 INIT_WORK(&asus->lightbar_led_work, lightbar_led_update);
709 asus->lightbar_led.name = "asus::lightbar";
710 asus->lightbar_led.brightness_set = lightbar_led_set;
711 asus->lightbar_led.brightness_get = lightbar_led_get;
712 asus->lightbar_led.max_brightness = 1;
714 rv = led_classdev_register(&asus->platform_device->dev,
715 &asus->lightbar_led);
720 asus_wmi_led_exit(asus);
727 * PCI hotplug (for wlan rfkill)
729 static bool asus_wlan_rfkill_blocked(struct asus_wmi *asus)
731 int result = asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WLAN);
738 static void asus_rfkill_hotplug(struct asus_wmi *asus)
746 mutex_lock(&asus->wmi_lock);
747 blocked = asus_wlan_rfkill_blocked(asus);
748 mutex_unlock(&asus->wmi_lock);
750 mutex_lock(&asus->hotplug_lock);
751 pci_lock_rescan_remove();
753 if (asus->wlan.rfkill)
754 rfkill_set_sw_state(asus->wlan.rfkill, blocked);
756 if (asus->hotplug_slot.ops) {
757 bus = pci_find_bus(0, 1);
759 pr_warn("Unable to find PCI bus 1?\n");
763 if (pci_bus_read_config_dword(bus, 0, PCI_VENDOR_ID, &l)) {
764 pr_err("Unable to read PCI config space?\n");
767 absent = (l == 0xffffffff);
769 if (blocked != absent) {
770 pr_warn("BIOS says wireless lan is %s, "
771 "but the pci device is %s\n",
772 blocked ? "blocked" : "unblocked",
773 absent ? "absent" : "present");
774 pr_warn("skipped wireless hotplug as probably "
775 "inappropriate for this model\n");
780 dev = pci_get_slot(bus, 0);
782 /* Device already present */
786 dev = pci_scan_single_device(bus, 0);
788 pci_bus_assign_resources(bus);
789 pci_bus_add_device(dev);
792 dev = pci_get_slot(bus, 0);
794 pci_stop_and_remove_bus_device(dev);
801 pci_unlock_rescan_remove();
802 mutex_unlock(&asus->hotplug_lock);
805 static void asus_rfkill_notify(acpi_handle handle, u32 event, void *data)
807 struct asus_wmi *asus = data;
809 if (event != ACPI_NOTIFY_BUS_CHECK)
813 * We can't call directly asus_rfkill_hotplug because most
814 * of the time WMBC is still being executed and not reetrant.
815 * There is currently no way to tell ACPICA that we want this
816 * method to be serialized, we schedule a asus_rfkill_hotplug
817 * call later, in a safer context.
819 queue_work(asus->hotplug_workqueue, &asus->hotplug_work);
822 static int asus_register_rfkill_notifier(struct asus_wmi *asus, char *node)
827 status = acpi_get_handle(NULL, node, &handle);
829 if (ACPI_SUCCESS(status)) {
830 status = acpi_install_notify_handler(handle,
832 asus_rfkill_notify, asus);
833 if (ACPI_FAILURE(status))
834 pr_warn("Failed to register notify on %s\n", node);
841 static void asus_unregister_rfkill_notifier(struct asus_wmi *asus, char *node)
843 acpi_status status = AE_OK;
846 status = acpi_get_handle(NULL, node, &handle);
848 if (ACPI_SUCCESS(status)) {
849 status = acpi_remove_notify_handler(handle,
852 if (ACPI_FAILURE(status))
853 pr_err("Error removing rfkill notify handler %s\n",
858 static int asus_get_adapter_status(struct hotplug_slot *hotplug_slot,
861 struct asus_wmi *asus = container_of(hotplug_slot,
862 struct asus_wmi, hotplug_slot);
863 int result = asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WLAN);
872 static const struct hotplug_slot_ops asus_hotplug_slot_ops = {
873 .get_adapter_status = asus_get_adapter_status,
874 .get_power_status = asus_get_adapter_status,
877 static void asus_hotplug_work(struct work_struct *work)
879 struct asus_wmi *asus;
881 asus = container_of(work, struct asus_wmi, hotplug_work);
882 asus_rfkill_hotplug(asus);
885 static int asus_setup_pci_hotplug(struct asus_wmi *asus)
888 struct pci_bus *bus = pci_find_bus(0, 1);
891 pr_err("Unable to find wifi PCI bus\n");
895 asus->hotplug_workqueue =
896 create_singlethread_workqueue("hotplug_workqueue");
897 if (!asus->hotplug_workqueue)
898 goto error_workqueue;
900 INIT_WORK(&asus->hotplug_work, asus_hotplug_work);
902 asus->hotplug_slot.ops = &asus_hotplug_slot_ops;
904 ret = pci_hp_register(&asus->hotplug_slot, bus, 0, "asus-wifi");
906 pr_err("Unable to register hotplug slot - %d\n", ret);
913 asus->hotplug_slot.ops = NULL;
914 destroy_workqueue(asus->hotplug_workqueue);
922 static int asus_rfkill_set(void *data, bool blocked)
924 struct asus_rfkill *priv = data;
925 u32 ctrl_param = !blocked;
926 u32 dev_id = priv->dev_id;
929 * If the user bit is set, BIOS can't set and record the wlan status,
930 * it will report the value read from id ASUS_WMI_DEVID_WLAN_LED
931 * while we query the wlan status through WMI(ASUS_WMI_DEVID_WLAN).
932 * So, we have to record wlan status in id ASUS_WMI_DEVID_WLAN_LED
933 * while setting the wlan status through WMI.
934 * This is also the behavior that windows app will do.
936 if ((dev_id == ASUS_WMI_DEVID_WLAN) &&
937 priv->asus->driver->wlan_ctrl_by_user)
938 dev_id = ASUS_WMI_DEVID_WLAN_LED;
940 return asus_wmi_set_devstate(dev_id, ctrl_param, NULL);
943 static void asus_rfkill_query(struct rfkill *rfkill, void *data)
945 struct asus_rfkill *priv = data;
948 result = asus_wmi_get_devstate_simple(priv->asus, priv->dev_id);
953 rfkill_set_sw_state(priv->rfkill, !result);
956 static int asus_rfkill_wlan_set(void *data, bool blocked)
958 struct asus_rfkill *priv = data;
959 struct asus_wmi *asus = priv->asus;
963 * This handler is enabled only if hotplug is enabled.
964 * In this case, the asus_wmi_set_devstate() will
965 * trigger a wmi notification and we need to wait
966 * this call to finish before being able to call
969 mutex_lock(&asus->wmi_lock);
970 ret = asus_rfkill_set(data, blocked);
971 mutex_unlock(&asus->wmi_lock);
975 static const struct rfkill_ops asus_rfkill_wlan_ops = {
976 .set_block = asus_rfkill_wlan_set,
977 .query = asus_rfkill_query,
980 static const struct rfkill_ops asus_rfkill_ops = {
981 .set_block = asus_rfkill_set,
982 .query = asus_rfkill_query,
985 static int asus_new_rfkill(struct asus_wmi *asus,
986 struct asus_rfkill *arfkill,
987 const char *name, enum rfkill_type type, int dev_id)
989 int result = asus_wmi_get_devstate_simple(asus, dev_id);
990 struct rfkill **rfkill = &arfkill->rfkill;
995 arfkill->dev_id = dev_id;
996 arfkill->asus = asus;
998 if (dev_id == ASUS_WMI_DEVID_WLAN &&
999 asus->driver->quirks->hotplug_wireless)
1000 *rfkill = rfkill_alloc(name, &asus->platform_device->dev, type,
1001 &asus_rfkill_wlan_ops, arfkill);
1003 *rfkill = rfkill_alloc(name, &asus->platform_device->dev, type,
1004 &asus_rfkill_ops, arfkill);
1009 if ((dev_id == ASUS_WMI_DEVID_WLAN) &&
1010 (asus->driver->quirks->wapf > 0))
1011 rfkill_set_led_trigger_name(*rfkill, "asus-wlan");
1013 rfkill_init_sw_state(*rfkill, !result);
1014 result = rfkill_register(*rfkill);
1016 rfkill_destroy(*rfkill);
1023 static void asus_wmi_rfkill_exit(struct asus_wmi *asus)
1025 if (asus->driver->wlan_ctrl_by_user && ashs_present())
1028 asus_unregister_rfkill_notifier(asus, "\\_SB.PCI0.P0P5");
1029 asus_unregister_rfkill_notifier(asus, "\\_SB.PCI0.P0P6");
1030 asus_unregister_rfkill_notifier(asus, "\\_SB.PCI0.P0P7");
1031 if (asus->wlan.rfkill) {
1032 rfkill_unregister(asus->wlan.rfkill);
1033 rfkill_destroy(asus->wlan.rfkill);
1034 asus->wlan.rfkill = NULL;
1037 * Refresh pci hotplug in case the rfkill state was changed after
1038 * asus_unregister_rfkill_notifier()
1040 asus_rfkill_hotplug(asus);
1041 if (asus->hotplug_slot.ops)
1042 pci_hp_deregister(&asus->hotplug_slot);
1043 if (asus->hotplug_workqueue)
1044 destroy_workqueue(asus->hotplug_workqueue);
1046 if (asus->bluetooth.rfkill) {
1047 rfkill_unregister(asus->bluetooth.rfkill);
1048 rfkill_destroy(asus->bluetooth.rfkill);
1049 asus->bluetooth.rfkill = NULL;
1051 if (asus->wimax.rfkill) {
1052 rfkill_unregister(asus->wimax.rfkill);
1053 rfkill_destroy(asus->wimax.rfkill);
1054 asus->wimax.rfkill = NULL;
1056 if (asus->wwan3g.rfkill) {
1057 rfkill_unregister(asus->wwan3g.rfkill);
1058 rfkill_destroy(asus->wwan3g.rfkill);
1059 asus->wwan3g.rfkill = NULL;
1061 if (asus->gps.rfkill) {
1062 rfkill_unregister(asus->gps.rfkill);
1063 rfkill_destroy(asus->gps.rfkill);
1064 asus->gps.rfkill = NULL;
1066 if (asus->uwb.rfkill) {
1067 rfkill_unregister(asus->uwb.rfkill);
1068 rfkill_destroy(asus->uwb.rfkill);
1069 asus->uwb.rfkill = NULL;
1073 static int asus_wmi_rfkill_init(struct asus_wmi *asus)
1077 mutex_init(&asus->hotplug_lock);
1078 mutex_init(&asus->wmi_lock);
1080 result = asus_new_rfkill(asus, &asus->wlan, "asus-wlan",
1081 RFKILL_TYPE_WLAN, ASUS_WMI_DEVID_WLAN);
1083 if (result && result != -ENODEV)
1086 result = asus_new_rfkill(asus, &asus->bluetooth,
1087 "asus-bluetooth", RFKILL_TYPE_BLUETOOTH,
1088 ASUS_WMI_DEVID_BLUETOOTH);
1090 if (result && result != -ENODEV)
1093 result = asus_new_rfkill(asus, &asus->wimax, "asus-wimax",
1094 RFKILL_TYPE_WIMAX, ASUS_WMI_DEVID_WIMAX);
1096 if (result && result != -ENODEV)
1099 result = asus_new_rfkill(asus, &asus->wwan3g, "asus-wwan3g",
1100 RFKILL_TYPE_WWAN, ASUS_WMI_DEVID_WWAN3G);
1102 if (result && result != -ENODEV)
1105 result = asus_new_rfkill(asus, &asus->gps, "asus-gps",
1106 RFKILL_TYPE_GPS, ASUS_WMI_DEVID_GPS);
1108 if (result && result != -ENODEV)
1111 result = asus_new_rfkill(asus, &asus->uwb, "asus-uwb",
1112 RFKILL_TYPE_UWB, ASUS_WMI_DEVID_UWB);
1114 if (result && result != -ENODEV)
1117 if (!asus->driver->quirks->hotplug_wireless)
1120 result = asus_setup_pci_hotplug(asus);
1122 * If we get -EBUSY then something else is handling the PCI hotplug -
1123 * don't fail in this case
1125 if (result == -EBUSY)
1128 asus_register_rfkill_notifier(asus, "\\_SB.PCI0.P0P5");
1129 asus_register_rfkill_notifier(asus, "\\_SB.PCI0.P0P6");
1130 asus_register_rfkill_notifier(asus, "\\_SB.PCI0.P0P7");
1132 * Refresh pci hotplug in case the rfkill state was changed during
1135 asus_rfkill_hotplug(asus);
1138 if (result && result != -ENODEV)
1139 asus_wmi_rfkill_exit(asus);
1141 if (result == -ENODEV)
1147 static void asus_wmi_set_xusb2pr(struct asus_wmi *asus)
1149 struct pci_dev *xhci_pdev;
1150 u32 orig_ports_available;
1151 u32 ports_available = asus->driver->quirks->xusb2pr;
1153 xhci_pdev = pci_get_device(PCI_VENDOR_ID_INTEL,
1154 PCI_DEVICE_ID_INTEL_LYNXPOINT_LP_XHCI,
1160 pci_read_config_dword(xhci_pdev, USB_INTEL_XUSB2PR,
1161 &orig_ports_available);
1163 pci_write_config_dword(xhci_pdev, USB_INTEL_XUSB2PR,
1164 cpu_to_le32(ports_available));
1166 pr_info("set USB_INTEL_XUSB2PR old: 0x%04x, new: 0x%04x\n",
1167 orig_ports_available, ports_available);
1171 * Some devices dont support or have borcken get_als method
1172 * but still support set method.
1174 static void asus_wmi_set_als(void)
1176 asus_wmi_set_devstate(ASUS_WMI_DEVID_ALS_ENABLE, 1, NULL);
1182 static int asus_hwmon_agfn_fan_speed_read(struct asus_wmi *asus, int fan,
1185 struct fan_args args = {
1186 .agfn.len = sizeof(args),
1187 .agfn.mfun = ASUS_FAN_MFUN,
1188 .agfn.sfun = ASUS_FAN_SFUN_READ,
1192 struct acpi_buffer input = { (acpi_size) sizeof(args), &args };
1198 status = asus_wmi_evaluate_method_agfn(input);
1200 if (status || args.agfn.err)
1204 *speed = args.speed;
1209 static int asus_hwmon_agfn_fan_speed_write(struct asus_wmi *asus, int fan,
1212 struct fan_args args = {
1213 .agfn.len = sizeof(args),
1214 .agfn.mfun = ASUS_FAN_MFUN,
1215 .agfn.sfun = ASUS_FAN_SFUN_WRITE,
1217 .speed = speed ? *speed : 0,
1219 struct acpi_buffer input = { (acpi_size) sizeof(args), &args };
1222 /* 1: for setting 1st fan's speed 0: setting auto mode */
1223 if (fan != 1 && fan != 0)
1226 status = asus_wmi_evaluate_method_agfn(input);
1228 if (status || args.agfn.err)
1231 if (speed && fan == 1)
1232 asus->asus_hwmon_pwm = *speed;
1238 * Check if we can read the speed of one fan. If true we assume we can also
1241 static int asus_hwmon_get_fan_number(struct asus_wmi *asus, int *num_fans)
1248 status = asus_hwmon_agfn_fan_speed_read(asus, 1, &speed);
1255 static int asus_hwmon_fan_set_auto(struct asus_wmi *asus)
1259 status = asus_hwmon_agfn_fan_speed_write(asus, 0, NULL);
1263 asus->asus_hwmon_fan_manual_mode = false;
1268 static int asus_hwmon_fan_rpm_show(struct device *dev, int fan)
1270 struct asus_wmi *asus = dev_get_drvdata(dev);
1274 /* no speed readable on manual mode */
1275 if (asus->asus_hwmon_fan_manual_mode)
1278 ret = asus_hwmon_agfn_fan_speed_read(asus, fan+1, &value);
1280 pr_warn("reading fan speed failed: %d\n", ret);
1287 static void asus_hwmon_pwm_show(struct asus_wmi *asus, int fan, int *value)
1291 if (asus->asus_hwmon_pwm >= 0) {
1292 *value = asus->asus_hwmon_pwm;
1296 err = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_FAN_CTRL, value);
1302 if (*value == 1) /* Low Speed */
1304 else if (*value == 2)
1306 else if (*value == 3)
1309 pr_err("Unknown fan speed %#x\n", *value);
1314 static ssize_t pwm1_show(struct device *dev,
1315 struct device_attribute *attr,
1318 struct asus_wmi *asus = dev_get_drvdata(dev);
1321 asus_hwmon_pwm_show(asus, 0, &value);
1323 return sprintf(buf, "%d\n", value);
1326 static ssize_t pwm1_store(struct device *dev,
1327 struct device_attribute *attr,
1328 const char *buf, size_t count) {
1329 struct asus_wmi *asus = dev_get_drvdata(dev);
1334 ret = kstrtouint(buf, 10, &value);
1339 value = clamp(value, 0, 255);
1341 state = asus_hwmon_agfn_fan_speed_write(asus, 1, &value);
1343 pr_warn("Setting fan speed failed: %d\n", state);
1345 asus->asus_hwmon_fan_manual_mode = true;
1350 static ssize_t fan1_input_show(struct device *dev,
1351 struct device_attribute *attr,
1354 int value = asus_hwmon_fan_rpm_show(dev, 0);
1356 return sprintf(buf, "%d\n", value < 0 ? -1 : value*100);
1360 static ssize_t pwm1_enable_show(struct device *dev,
1361 struct device_attribute *attr,
1364 struct asus_wmi *asus = dev_get_drvdata(dev);
1366 if (asus->asus_hwmon_fan_manual_mode)
1367 return sprintf(buf, "%d\n", ASUS_FAN_CTRL_MANUAL);
1369 return sprintf(buf, "%d\n", ASUS_FAN_CTRL_AUTO);
1372 static ssize_t pwm1_enable_store(struct device *dev,
1373 struct device_attribute *attr,
1374 const char *buf, size_t count)
1376 struct asus_wmi *asus = dev_get_drvdata(dev);
1381 ret = kstrtouint(buf, 10, &state);
1386 if (state == ASUS_FAN_CTRL_MANUAL)
1387 asus->asus_hwmon_fan_manual_mode = true;
1389 status = asus_hwmon_fan_set_auto(asus);
1397 static ssize_t fan1_label_show(struct device *dev,
1398 struct device_attribute *attr,
1401 return sprintf(buf, "%s\n", ASUS_FAN_DESC);
1404 static ssize_t asus_hwmon_temp1(struct device *dev,
1405 struct device_attribute *attr,
1408 struct asus_wmi *asus = dev_get_drvdata(dev);
1412 err = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_THERMAL_CTRL, &value);
1417 value = DECI_KELVIN_TO_CELSIUS((value & 0xFFFF)) * 1000;
1419 return sprintf(buf, "%d\n", value);
1423 static DEVICE_ATTR_RW(pwm1);
1424 static DEVICE_ATTR_RW(pwm1_enable);
1425 static DEVICE_ATTR_RO(fan1_input);
1426 static DEVICE_ATTR_RO(fan1_label);
1429 static DEVICE_ATTR(temp1_input, S_IRUGO, asus_hwmon_temp1, NULL);
1431 static struct attribute *hwmon_attributes[] = {
1432 &dev_attr_pwm1.attr,
1433 &dev_attr_pwm1_enable.attr,
1434 &dev_attr_fan1_input.attr,
1435 &dev_attr_fan1_label.attr,
1437 &dev_attr_temp1_input.attr,
1441 static umode_t asus_hwmon_sysfs_is_visible(struct kobject *kobj,
1442 struct attribute *attr, int idx)
1444 struct device *dev = container_of(kobj, struct device, kobj);
1445 struct platform_device *pdev = to_platform_device(dev->parent);
1446 struct asus_wmi *asus = platform_get_drvdata(pdev);
1449 u32 value = ASUS_WMI_UNSUPPORTED_METHOD;
1452 if (attr == &dev_attr_pwm1.attr)
1453 dev_id = ASUS_WMI_DEVID_FAN_CTRL;
1454 else if (attr == &dev_attr_temp1_input.attr)
1455 dev_id = ASUS_WMI_DEVID_THERMAL_CTRL;
1458 if (attr == &dev_attr_fan1_input.attr
1459 || attr == &dev_attr_fan1_label.attr
1460 || attr == &dev_attr_pwm1.attr
1461 || attr == &dev_attr_pwm1_enable.attr) {
1466 int err = asus_wmi_get_devstate(asus, dev_id, &value);
1468 if (err < 0 && fan_attr == -1)
1469 return 0; /* can't return negative here */
1472 if (dev_id == ASUS_WMI_DEVID_FAN_CTRL) {
1474 * We need to find a better way, probably using sfun,
1476 * Currently we disable it if:
1477 * - ASUS_WMI_UNSUPPORTED_METHOD is returned
1478 * - reverved bits are non-zero
1479 * - sfun and presence bit are not set
1481 if (value == ASUS_WMI_UNSUPPORTED_METHOD || value & 0xFFF80000
1482 || (!asus->sfun && !(value & ASUS_WMI_DSTS_PRESENCE_BIT)))
1485 ok = fan_attr <= asus->asus_hwmon_num_fans;
1486 } else if (dev_id == ASUS_WMI_DEVID_THERMAL_CTRL) {
1487 /* If value is zero, something is clearly wrong */
1490 } else if (fan_attr <= asus->asus_hwmon_num_fans && fan_attr != -1) {
1496 return ok ? attr->mode : 0;
1499 static const struct attribute_group hwmon_attribute_group = {
1500 .is_visible = asus_hwmon_sysfs_is_visible,
1501 .attrs = hwmon_attributes
1503 __ATTRIBUTE_GROUPS(hwmon_attribute);
1505 static int asus_wmi_hwmon_init(struct asus_wmi *asus)
1507 struct device *hwmon;
1509 hwmon = hwmon_device_register_with_groups(&asus->platform_device->dev,
1511 hwmon_attribute_groups);
1512 if (IS_ERR(hwmon)) {
1513 pr_err("Could not register asus hwmon device\n");
1514 return PTR_ERR(hwmon);
1522 static int read_backlight_power(struct asus_wmi *asus)
1525 if (asus->driver->quirks->store_backlight_power)
1526 ret = !asus->driver->panel_power;
1528 ret = asus_wmi_get_devstate_simple(asus,
1529 ASUS_WMI_DEVID_BACKLIGHT);
1534 return ret ? FB_BLANK_UNBLANK : FB_BLANK_POWERDOWN;
1537 static int read_brightness_max(struct asus_wmi *asus)
1542 err = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_BRIGHTNESS, &retval);
1547 retval = retval & ASUS_WMI_DSTS_MAX_BRIGTH_MASK;
1556 static int read_brightness(struct backlight_device *bd)
1558 struct asus_wmi *asus = bl_get_data(bd);
1562 err = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_BRIGHTNESS, &retval);
1567 return retval & ASUS_WMI_DSTS_BRIGHTNESS_MASK;
1570 static u32 get_scalar_command(struct backlight_device *bd)
1572 struct asus_wmi *asus = bl_get_data(bd);
1575 if ((asus->driver->brightness < bd->props.brightness) ||
1576 bd->props.brightness == bd->props.max_brightness)
1577 ctrl_param = 0x00008001;
1578 else if ((asus->driver->brightness > bd->props.brightness) ||
1579 bd->props.brightness == 0)
1580 ctrl_param = 0x00008000;
1582 asus->driver->brightness = bd->props.brightness;
1587 static int update_bl_status(struct backlight_device *bd)
1589 struct asus_wmi *asus = bl_get_data(bd);
1593 power = read_backlight_power(asus);
1594 if (power != -ENODEV && bd->props.power != power) {
1595 ctrl_param = !!(bd->props.power == FB_BLANK_UNBLANK);
1596 err = asus_wmi_set_devstate(ASUS_WMI_DEVID_BACKLIGHT,
1598 if (asus->driver->quirks->store_backlight_power)
1599 asus->driver->panel_power = bd->props.power;
1601 /* When using scalar brightness, updating the brightness
1602 * will mess with the backlight power */
1603 if (asus->driver->quirks->scalar_panel_brightness)
1607 if (asus->driver->quirks->scalar_panel_brightness)
1608 ctrl_param = get_scalar_command(bd);
1610 ctrl_param = bd->props.brightness;
1612 err = asus_wmi_set_devstate(ASUS_WMI_DEVID_BRIGHTNESS,
1618 static const struct backlight_ops asus_wmi_bl_ops = {
1619 .get_brightness = read_brightness,
1620 .update_status = update_bl_status,
1623 static int asus_wmi_backlight_notify(struct asus_wmi *asus, int code)
1625 struct backlight_device *bd = asus->backlight_device;
1626 int old = bd->props.brightness;
1629 if (code >= NOTIFY_BRNUP_MIN && code <= NOTIFY_BRNUP_MAX)
1630 new = code - NOTIFY_BRNUP_MIN + 1;
1631 else if (code >= NOTIFY_BRNDOWN_MIN && code <= NOTIFY_BRNDOWN_MAX)
1632 new = code - NOTIFY_BRNDOWN_MIN;
1634 bd->props.brightness = new;
1635 backlight_update_status(bd);
1636 backlight_force_update(bd, BACKLIGHT_UPDATE_HOTKEY);
1641 static int asus_wmi_backlight_init(struct asus_wmi *asus)
1643 struct backlight_device *bd;
1644 struct backlight_properties props;
1648 max = read_brightness_max(asus);
1652 power = read_backlight_power(asus);
1654 if (power == -ENODEV)
1655 power = FB_BLANK_UNBLANK;
1659 memset(&props, 0, sizeof(struct backlight_properties));
1660 props.type = BACKLIGHT_PLATFORM;
1661 props.max_brightness = max;
1662 bd = backlight_device_register(asus->driver->name,
1663 &asus->platform_device->dev, asus,
1664 &asus_wmi_bl_ops, &props);
1666 pr_err("Could not register backlight device\n");
1670 asus->backlight_device = bd;
1672 if (asus->driver->quirks->store_backlight_power)
1673 asus->driver->panel_power = power;
1675 bd->props.brightness = read_brightness(bd);
1676 bd->props.power = power;
1677 backlight_update_status(bd);
1679 asus->driver->brightness = bd->props.brightness;
1684 static void asus_wmi_backlight_exit(struct asus_wmi *asus)
1686 backlight_device_unregister(asus->backlight_device);
1688 asus->backlight_device = NULL;
1691 static int is_display_toggle(int code)
1693 /* display toggle keys */
1694 if ((code >= 0x61 && code <= 0x67) ||
1695 (code >= 0x8c && code <= 0x93) ||
1696 (code >= 0xa0 && code <= 0xa7) ||
1697 (code >= 0xd0 && code <= 0xd5))
1703 static void asus_wmi_notify(u32 value, void *context)
1705 struct asus_wmi *asus = context;
1706 struct acpi_buffer response = { ACPI_ALLOCATE_BUFFER, NULL };
1707 union acpi_object *obj;
1711 unsigned int key_value = 1;
1712 bool autorelease = 1;
1714 status = wmi_get_event_data(value, &response);
1715 if (status != AE_OK) {
1716 pr_err("bad event status 0x%x\n", status);
1720 obj = (union acpi_object *)response.pointer;
1722 if (!obj || obj->type != ACPI_TYPE_INTEGER)
1725 code = obj->integer.value;
1728 if (asus->driver->key_filter) {
1729 asus->driver->key_filter(asus->driver, &code, &key_value,
1731 if (code == ASUS_WMI_KEY_IGNORE)
1735 if (code >= NOTIFY_BRNUP_MIN && code <= NOTIFY_BRNUP_MAX)
1736 code = ASUS_WMI_BRN_UP;
1737 else if (code >= NOTIFY_BRNDOWN_MIN &&
1738 code <= NOTIFY_BRNDOWN_MAX)
1739 code = ASUS_WMI_BRN_DOWN;
1741 if (code == ASUS_WMI_BRN_DOWN || code == ASUS_WMI_BRN_UP) {
1742 if (acpi_video_get_backlight_type() == acpi_backlight_vendor) {
1743 asus_wmi_backlight_notify(asus, orig_code);
1748 if (code == NOTIFY_KBD_BRTUP) {
1749 do_kbd_led_set(&asus->kbd_led, asus->kbd_led_wk + 1);
1752 if (code == NOTIFY_KBD_BRTDWN) {
1753 do_kbd_led_set(&asus->kbd_led, asus->kbd_led_wk - 1);
1756 if (code == NOTIFY_KBD_BRTTOGGLE) {
1757 if (asus->kbd_led_wk == asus->kbd_led.max_brightness)
1758 do_kbd_led_set(&asus->kbd_led, 0);
1760 do_kbd_led_set(&asus->kbd_led, asus->kbd_led_wk + 1);
1764 if (is_display_toggle(code) &&
1765 asus->driver->quirks->no_display_toggle)
1768 if (!sparse_keymap_report_event(asus->inputdev, code,
1769 key_value, autorelease))
1770 pr_info("Unknown key %x pressed\n", code);
1779 static int parse_arg(const char *buf, unsigned long count, int *val)
1783 if (sscanf(buf, "%i", val) != 1)
1788 static ssize_t store_sys_wmi(struct asus_wmi *asus, int devid,
1789 const char *buf, size_t count)
1794 value = asus_wmi_get_devstate_simple(asus, devid);
1798 rv = parse_arg(buf, count, &value);
1799 err = asus_wmi_set_devstate(devid, value, &retval);
1807 static ssize_t show_sys_wmi(struct asus_wmi *asus, int devid, char *buf)
1809 int value = asus_wmi_get_devstate_simple(asus, devid);
1814 return sprintf(buf, "%d\n", value);
1817 #define ASUS_WMI_CREATE_DEVICE_ATTR(_name, _mode, _cm) \
1818 static ssize_t show_##_name(struct device *dev, \
1819 struct device_attribute *attr, \
1822 struct asus_wmi *asus = dev_get_drvdata(dev); \
1824 return show_sys_wmi(asus, _cm, buf); \
1826 static ssize_t store_##_name(struct device *dev, \
1827 struct device_attribute *attr, \
1828 const char *buf, size_t count) \
1830 struct asus_wmi *asus = dev_get_drvdata(dev); \
1832 return store_sys_wmi(asus, _cm, buf, count); \
1834 static struct device_attribute dev_attr_##_name = { \
1836 .name = __stringify(_name), \
1838 .show = show_##_name, \
1839 .store = store_##_name, \
1842 ASUS_WMI_CREATE_DEVICE_ATTR(touchpad, 0644, ASUS_WMI_DEVID_TOUCHPAD);
1843 ASUS_WMI_CREATE_DEVICE_ATTR(camera, 0644, ASUS_WMI_DEVID_CAMERA);
1844 ASUS_WMI_CREATE_DEVICE_ATTR(cardr, 0644, ASUS_WMI_DEVID_CARDREADER);
1845 ASUS_WMI_CREATE_DEVICE_ATTR(lid_resume, 0644, ASUS_WMI_DEVID_LID_RESUME);
1846 ASUS_WMI_CREATE_DEVICE_ATTR(als_enable, 0644, ASUS_WMI_DEVID_ALS_ENABLE);
1848 static ssize_t cpufv_store(struct device *dev, struct device_attribute *attr,
1849 const char *buf, size_t count)
1853 if (!count || sscanf(buf, "%i", &value) != 1)
1855 if (value < 0 || value > 2)
1858 rv = asus_wmi_evaluate_method(ASUS_WMI_METHODID_CFVS, value, 0, NULL);
1865 static DEVICE_ATTR_WO(cpufv);
1867 static struct attribute *platform_attributes[] = {
1868 &dev_attr_cpufv.attr,
1869 &dev_attr_camera.attr,
1870 &dev_attr_cardr.attr,
1871 &dev_attr_touchpad.attr,
1872 &dev_attr_lid_resume.attr,
1873 &dev_attr_als_enable.attr,
1877 static umode_t asus_sysfs_is_visible(struct kobject *kobj,
1878 struct attribute *attr, int idx)
1880 struct device *dev = container_of(kobj, struct device, kobj);
1881 struct asus_wmi *asus = dev_get_drvdata(dev);
1885 if (attr == &dev_attr_camera.attr)
1886 devid = ASUS_WMI_DEVID_CAMERA;
1887 else if (attr == &dev_attr_cardr.attr)
1888 devid = ASUS_WMI_DEVID_CARDREADER;
1889 else if (attr == &dev_attr_touchpad.attr)
1890 devid = ASUS_WMI_DEVID_TOUCHPAD;
1891 else if (attr == &dev_attr_lid_resume.attr)
1892 devid = ASUS_WMI_DEVID_LID_RESUME;
1893 else if (attr == &dev_attr_als_enable.attr)
1894 devid = ASUS_WMI_DEVID_ALS_ENABLE;
1897 ok = !(asus_wmi_get_devstate_simple(asus, devid) < 0);
1899 return ok ? attr->mode : 0;
1902 static const struct attribute_group platform_attribute_group = {
1903 .is_visible = asus_sysfs_is_visible,
1904 .attrs = platform_attributes
1907 static void asus_wmi_sysfs_exit(struct platform_device *device)
1909 sysfs_remove_group(&device->dev.kobj, &platform_attribute_group);
1912 static int asus_wmi_sysfs_init(struct platform_device *device)
1914 return sysfs_create_group(&device->dev.kobj, &platform_attribute_group);
1920 static int asus_wmi_platform_init(struct asus_wmi *asus)
1924 /* INIT enable hotkeys on some models */
1925 if (!asus_wmi_evaluate_method(ASUS_WMI_METHODID_INIT, 0, 0, &rv))
1926 pr_info("Initialization: %#x\n", rv);
1928 /* We don't know yet what to do with this version... */
1929 if (!asus_wmi_evaluate_method(ASUS_WMI_METHODID_SPEC, 0, 0x9, &rv)) {
1930 pr_info("BIOS WMI version: %d.%d\n", rv >> 16, rv & 0xFF);
1935 * The SFUN method probably allows the original driver to get the list
1936 * of features supported by a given model. For now, 0x0100 or 0x0800
1937 * bit signifies that the laptop is equipped with a Wi-Fi MiniPCI card.
1938 * The significance of others is yet to be found.
1940 if (!asus_wmi_evaluate_method(ASUS_WMI_METHODID_SFUN, 0, 0, &rv)) {
1941 pr_info("SFUN value: %#x\n", rv);
1946 * Eee PC and Notebooks seems to have different method_id for DSTS,
1947 * but it may also be related to the BIOS's SPEC.
1948 * Note, on most Eeepc, there is no way to check if a method exist
1949 * or note, while on notebooks, they returns 0xFFFFFFFE on failure,
1950 * but once again, SPEC may probably be used for that kind of things.
1952 if (!asus_wmi_evaluate_method(ASUS_WMI_METHODID_DSTS, 0, 0, NULL))
1953 asus->dsts_id = ASUS_WMI_METHODID_DSTS;
1955 asus->dsts_id = ASUS_WMI_METHODID_DSTS2;
1957 /* CWAP allow to define the behavior of the Fn+F2 key,
1958 * this method doesn't seems to be present on Eee PCs */
1959 if (asus->driver->quirks->wapf >= 0)
1960 asus_wmi_set_devstate(ASUS_WMI_DEVID_CWAP,
1961 asus->driver->quirks->wapf, NULL);
1963 return asus_wmi_sysfs_init(asus->platform_device);
1966 static void asus_wmi_platform_exit(struct asus_wmi *asus)
1968 asus_wmi_sysfs_exit(asus->platform_device);
1974 struct asus_wmi_debugfs_node {
1975 struct asus_wmi *asus;
1977 int (*show) (struct seq_file *m, void *data);
1980 static int show_dsts(struct seq_file *m, void *data)
1982 struct asus_wmi *asus = m->private;
1986 err = asus_wmi_get_devstate(asus, asus->debug.dev_id, &retval);
1991 seq_printf(m, "DSTS(%#x) = %#x\n", asus->debug.dev_id, retval);
1996 static int show_devs(struct seq_file *m, void *data)
1998 struct asus_wmi *asus = m->private;
2002 err = asus_wmi_set_devstate(asus->debug.dev_id, asus->debug.ctrl_param,
2008 seq_printf(m, "DEVS(%#x, %#x) = %#x\n", asus->debug.dev_id,
2009 asus->debug.ctrl_param, retval);
2014 static int show_call(struct seq_file *m, void *data)
2016 struct asus_wmi *asus = m->private;
2017 struct bios_args args = {
2018 .arg0 = asus->debug.dev_id,
2019 .arg1 = asus->debug.ctrl_param,
2021 struct acpi_buffer input = { (acpi_size) sizeof(args), &args };
2022 struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
2023 union acpi_object *obj;
2026 status = wmi_evaluate_method(ASUS_WMI_MGMT_GUID,
2027 0, asus->debug.method_id,
2030 if (ACPI_FAILURE(status))
2033 obj = (union acpi_object *)output.pointer;
2034 if (obj && obj->type == ACPI_TYPE_INTEGER)
2035 seq_printf(m, "%#x(%#x, %#x) = %#x\n", asus->debug.method_id,
2036 asus->debug.dev_id, asus->debug.ctrl_param,
2037 (u32) obj->integer.value);
2039 seq_printf(m, "%#x(%#x, %#x) = t:%d\n", asus->debug.method_id,
2040 asus->debug.dev_id, asus->debug.ctrl_param,
2041 obj ? obj->type : -1);
2048 static struct asus_wmi_debugfs_node asus_wmi_debug_files[] = {
2049 {NULL, "devs", show_devs},
2050 {NULL, "dsts", show_dsts},
2051 {NULL, "call", show_call},
2054 static int asus_wmi_debugfs_open(struct inode *inode, struct file *file)
2056 struct asus_wmi_debugfs_node *node = inode->i_private;
2058 return single_open(file, node->show, node->asus);
2061 static const struct file_operations asus_wmi_debugfs_io_ops = {
2062 .owner = THIS_MODULE,
2063 .open = asus_wmi_debugfs_open,
2065 .llseek = seq_lseek,
2066 .release = single_release,
2069 static void asus_wmi_debugfs_exit(struct asus_wmi *asus)
2071 debugfs_remove_recursive(asus->debug.root);
2074 static int asus_wmi_debugfs_init(struct asus_wmi *asus)
2076 struct dentry *dent;
2079 asus->debug.root = debugfs_create_dir(asus->driver->name, NULL);
2080 if (!asus->debug.root) {
2081 pr_err("failed to create debugfs directory\n");
2085 dent = debugfs_create_x32("method_id", S_IRUGO | S_IWUSR,
2086 asus->debug.root, &asus->debug.method_id);
2090 dent = debugfs_create_x32("dev_id", S_IRUGO | S_IWUSR,
2091 asus->debug.root, &asus->debug.dev_id);
2095 dent = debugfs_create_x32("ctrl_param", S_IRUGO | S_IWUSR,
2096 asus->debug.root, &asus->debug.ctrl_param);
2100 for (i = 0; i < ARRAY_SIZE(asus_wmi_debug_files); i++) {
2101 struct asus_wmi_debugfs_node *node = &asus_wmi_debug_files[i];
2104 dent = debugfs_create_file(node->name, S_IFREG | S_IRUGO,
2105 asus->debug.root, node,
2106 &asus_wmi_debugfs_io_ops);
2108 pr_err("failed to create debug file: %s\n", node->name);
2116 asus_wmi_debugfs_exit(asus);
2120 static int asus_wmi_fan_init(struct asus_wmi *asus)
2124 asus->asus_hwmon_pwm = -1;
2125 asus->asus_hwmon_num_fans = -1;
2126 asus->asus_hwmon_fan_manual_mode = false;
2128 status = asus_hwmon_get_fan_number(asus, &asus->asus_hwmon_num_fans);
2130 asus->asus_hwmon_num_fans = 0;
2131 pr_warn("Could not determine number of fans: %d\n", status);
2135 pr_info("Number of fans: %d\n", asus->asus_hwmon_num_fans);
2142 static int asus_wmi_add(struct platform_device *pdev)
2144 struct platform_driver *pdrv = to_platform_driver(pdev->dev.driver);
2145 struct asus_wmi_driver *wdrv = to_asus_wmi_driver(pdrv);
2146 struct asus_wmi *asus;
2147 const char *chassis_type;
2152 asus = kzalloc(sizeof(struct asus_wmi), GFP_KERNEL);
2156 asus->driver = wdrv;
2157 asus->platform_device = pdev;
2158 wdrv->platform_device = pdev;
2159 platform_set_drvdata(asus->platform_device, asus);
2161 if (wdrv->detect_quirks)
2162 wdrv->detect_quirks(asus->driver);
2164 err = asus_wmi_platform_init(asus);
2168 err = asus_wmi_input_init(asus);
2172 err = asus_wmi_fan_init(asus); /* probably no problems on error */
2173 asus_hwmon_fan_set_auto(asus);
2175 err = asus_wmi_hwmon_init(asus);
2179 err = asus_wmi_led_init(asus);
2183 asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_WLAN, &result);
2184 if (result & (ASUS_WMI_DSTS_PRESENCE_BIT | ASUS_WMI_DSTS_USER_BIT))
2185 asus->driver->wlan_ctrl_by_user = 1;
2187 if (!(asus->driver->wlan_ctrl_by_user && ashs_present())) {
2188 err = asus_wmi_rfkill_init(asus);
2193 if (asus->driver->quirks->wmi_force_als_set)
2196 /* Some Asus desktop boards export an acpi-video backlight interface,
2197 stop this from showing up */
2198 chassis_type = dmi_get_system_info(DMI_CHASSIS_TYPE);
2199 if (chassis_type && !strcmp(chassis_type, "3"))
2200 acpi_video_set_dmi_backlight_type(acpi_backlight_vendor);
2202 if (asus->driver->quirks->wmi_backlight_power)
2203 acpi_video_set_dmi_backlight_type(acpi_backlight_vendor);
2205 if (asus->driver->quirks->wmi_backlight_native)
2206 acpi_video_set_dmi_backlight_type(acpi_backlight_native);
2208 if (asus->driver->quirks->xusb2pr)
2209 asus_wmi_set_xusb2pr(asus);
2211 if (acpi_video_get_backlight_type() == acpi_backlight_vendor) {
2212 err = asus_wmi_backlight_init(asus);
2213 if (err && err != -ENODEV)
2214 goto fail_backlight;
2217 status = wmi_install_notify_handler(asus->driver->event_guid,
2218 asus_wmi_notify, asus);
2219 if (ACPI_FAILURE(status)) {
2220 pr_err("Unable to register notify handler - %d\n", status);
2222 goto fail_wmi_handler;
2225 err = asus_wmi_debugfs_init(asus);
2232 wmi_remove_notify_handler(asus->driver->event_guid);
2234 asus_wmi_backlight_exit(asus);
2236 asus_wmi_rfkill_exit(asus);
2238 asus_wmi_led_exit(asus);
2241 asus_wmi_input_exit(asus);
2243 asus_wmi_platform_exit(asus);
2249 static int asus_wmi_remove(struct platform_device *device)
2251 struct asus_wmi *asus;
2253 asus = platform_get_drvdata(device);
2254 wmi_remove_notify_handler(asus->driver->event_guid);
2255 asus_wmi_backlight_exit(asus);
2256 asus_wmi_input_exit(asus);
2257 asus_wmi_led_exit(asus);
2258 asus_wmi_rfkill_exit(asus);
2259 asus_wmi_debugfs_exit(asus);
2260 asus_wmi_platform_exit(asus);
2261 asus_hwmon_fan_set_auto(asus);
2268 * Platform driver - hibernate/resume callbacks
2270 static int asus_hotk_thaw(struct device *device)
2272 struct asus_wmi *asus = dev_get_drvdata(device);
2274 if (asus->wlan.rfkill) {
2278 * Work around bios bug - acpi _PTS turns off the wireless led
2279 * during suspend. Normally it restores it on resume, but
2280 * we should kick it ourselves in case hibernation is aborted.
2282 wlan = asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WLAN);
2283 asus_wmi_set_devstate(ASUS_WMI_DEVID_WLAN, wlan, NULL);
2289 static int asus_hotk_resume(struct device *device)
2291 struct asus_wmi *asus = dev_get_drvdata(device);
2293 if (!IS_ERR_OR_NULL(asus->kbd_led.dev))
2294 queue_work(asus->led_workqueue, &asus->kbd_led_work);
2299 static int asus_hotk_restore(struct device *device)
2301 struct asus_wmi *asus = dev_get_drvdata(device);
2304 /* Refresh both wlan rfkill state and pci hotplug */
2305 if (asus->wlan.rfkill)
2306 asus_rfkill_hotplug(asus);
2308 if (asus->bluetooth.rfkill) {
2309 bl = !asus_wmi_get_devstate_simple(asus,
2310 ASUS_WMI_DEVID_BLUETOOTH);
2311 rfkill_set_sw_state(asus->bluetooth.rfkill, bl);
2313 if (asus->wimax.rfkill) {
2314 bl = !asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WIMAX);
2315 rfkill_set_sw_state(asus->wimax.rfkill, bl);
2317 if (asus->wwan3g.rfkill) {
2318 bl = !asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WWAN3G);
2319 rfkill_set_sw_state(asus->wwan3g.rfkill, bl);
2321 if (asus->gps.rfkill) {
2322 bl = !asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_GPS);
2323 rfkill_set_sw_state(asus->gps.rfkill, bl);
2325 if (asus->uwb.rfkill) {
2326 bl = !asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_UWB);
2327 rfkill_set_sw_state(asus->uwb.rfkill, bl);
2329 if (!IS_ERR_OR_NULL(asus->kbd_led.dev))
2330 queue_work(asus->led_workqueue, &asus->kbd_led_work);
2335 static const struct dev_pm_ops asus_pm_ops = {
2336 .thaw = asus_hotk_thaw,
2337 .restore = asus_hotk_restore,
2338 .resume = asus_hotk_resume,
2341 static int asus_wmi_probe(struct platform_device *pdev)
2343 struct platform_driver *pdrv = to_platform_driver(pdev->dev.driver);
2344 struct asus_wmi_driver *wdrv = to_asus_wmi_driver(pdrv);
2347 if (!wmi_has_guid(ASUS_WMI_MGMT_GUID)) {
2348 pr_warn("Management GUID not found\n");
2352 if (wdrv->event_guid && !wmi_has_guid(wdrv->event_guid)) {
2353 pr_warn("Event GUID not found\n");
2358 ret = wdrv->probe(pdev);
2363 return asus_wmi_add(pdev);
2368 int __init_or_module asus_wmi_register_driver(struct asus_wmi_driver *driver)
2370 struct platform_driver *platform_driver;
2371 struct platform_device *platform_device;
2376 platform_driver = &driver->platform_driver;
2377 platform_driver->remove = asus_wmi_remove;
2378 platform_driver->driver.owner = driver->owner;
2379 platform_driver->driver.name = driver->name;
2380 platform_driver->driver.pm = &asus_pm_ops;
2382 platform_device = platform_create_bundle(platform_driver,
2385 if (IS_ERR(platform_device))
2386 return PTR_ERR(platform_device);
2391 EXPORT_SYMBOL_GPL(asus_wmi_register_driver);
2393 void asus_wmi_unregister_driver(struct asus_wmi_driver *driver)
2395 platform_device_unregister(driver->platform_device);
2396 platform_driver_unregister(&driver->platform_driver);
2399 EXPORT_SYMBOL_GPL(asus_wmi_unregister_driver);
2401 static int __init asus_wmi_init(void)
2403 if (!wmi_has_guid(ASUS_WMI_MGMT_GUID)) {
2404 pr_info("Asus Management GUID not found\n");
2408 pr_info("ASUS WMI generic driver loaded\n");
2412 static void __exit asus_wmi_exit(void)
2414 pr_info("ASUS WMI generic driver unloaded\n");
2417 module_init(asus_wmi_init);
2418 module_exit(asus_wmi_exit);