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
72 #define ASUS_WMI_METHODID_SPEC 0x43455053 /* BIOS SPECification */
73 #define ASUS_WMI_METHODID_SFBD 0x44424653 /* Set First Boot Device */
74 #define ASUS_WMI_METHODID_GLCD 0x44434C47 /* Get LCD status */
75 #define ASUS_WMI_METHODID_GPID 0x44495047 /* Get Panel ID?? (Resol) */
76 #define ASUS_WMI_METHODID_QMOD 0x444F4D51 /* Quiet MODe */
77 #define ASUS_WMI_METHODID_SPLV 0x4C425053 /* Set Panel Light Value */
78 #define ASUS_WMI_METHODID_AGFN 0x4E464741 /* FaN? */
79 #define ASUS_WMI_METHODID_SFUN 0x4E554653 /* FUNCtionalities */
80 #define ASUS_WMI_METHODID_SDSP 0x50534453 /* Set DiSPlay output */
81 #define ASUS_WMI_METHODID_GDSP 0x50534447 /* Get DiSPlay output */
82 #define ASUS_WMI_METHODID_DEVP 0x50564544 /* DEVice Policy */
83 #define ASUS_WMI_METHODID_OSVR 0x5256534F /* OS VeRsion */
84 #define ASUS_WMI_METHODID_DSTS 0x53544344 /* Device STatuS */
85 #define ASUS_WMI_METHODID_DSTS2 0x53545344 /* Device STatuS #2*/
86 #define ASUS_WMI_METHODID_BSTS 0x53545342 /* Bios STatuS ? */
87 #define ASUS_WMI_METHODID_DEVS 0x53564544 /* DEVice Set */
88 #define ASUS_WMI_METHODID_CFVS 0x53564643 /* CPU Frequency Volt Set */
89 #define ASUS_WMI_METHODID_KBFT 0x5446424B /* KeyBoard FilTer */
90 #define ASUS_WMI_METHODID_INIT 0x54494E49 /* INITialize */
91 #define ASUS_WMI_METHODID_HKEY 0x59454B48 /* Hot KEY ?? */
93 #define ASUS_WMI_UNSUPPORTED_METHOD 0xFFFFFFFE
96 #define ASUS_WMI_DEVID_HW_SWITCH 0x00010001
97 #define ASUS_WMI_DEVID_WIRELESS_LED 0x00010002
98 #define ASUS_WMI_DEVID_CWAP 0x00010003
99 #define ASUS_WMI_DEVID_WLAN 0x00010011
100 #define ASUS_WMI_DEVID_WLAN_LED 0x00010012
101 #define ASUS_WMI_DEVID_BLUETOOTH 0x00010013
102 #define ASUS_WMI_DEVID_GPS 0x00010015
103 #define ASUS_WMI_DEVID_WIMAX 0x00010017
104 #define ASUS_WMI_DEVID_WWAN3G 0x00010019
105 #define ASUS_WMI_DEVID_UWB 0x00010021
108 /* 0x000200XX and 0x000400XX */
109 #define ASUS_WMI_DEVID_LED1 0x00020011
110 #define ASUS_WMI_DEVID_LED2 0x00020012
111 #define ASUS_WMI_DEVID_LED3 0x00020013
112 #define ASUS_WMI_DEVID_LED4 0x00020014
113 #define ASUS_WMI_DEVID_LED5 0x00020015
114 #define ASUS_WMI_DEVID_LED6 0x00020016
116 /* Backlight and Brightness */
117 #define ASUS_WMI_DEVID_ALS_ENABLE 0x00050001 /* Ambient Light Sensor */
118 #define ASUS_WMI_DEVID_BACKLIGHT 0x00050011
119 #define ASUS_WMI_DEVID_BRIGHTNESS 0x00050012
120 #define ASUS_WMI_DEVID_KBD_BACKLIGHT 0x00050021
121 #define ASUS_WMI_DEVID_LIGHT_SENSOR 0x00050022 /* ?? */
124 #define ASUS_WMI_DEVID_CAMERA 0x00060013
127 #define ASUS_WMI_DEVID_CARDREADER 0x00080013
130 #define ASUS_WMI_DEVID_TOUCHPAD 0x00100011
131 #define ASUS_WMI_DEVID_TOUCHPAD_LED 0x00100012
134 #define ASUS_WMI_DEVID_THERMAL_CTRL 0x00110011
135 #define ASUS_WMI_DEVID_FAN_CTRL 0x00110012
138 #define ASUS_WMI_DEVID_PROCESSOR_STATE 0x00120012
140 /* Deep S3 / Resume on LID open */
141 #define ASUS_WMI_DEVID_LID_RESUME 0x00120031
144 #define ASUS_WMI_DSTS_STATUS_BIT 0x00000001
145 #define ASUS_WMI_DSTS_UNKNOWN_BIT 0x00000002
146 #define ASUS_WMI_DSTS_PRESENCE_BIT 0x00010000
147 #define ASUS_WMI_DSTS_USER_BIT 0x00020000
148 #define ASUS_WMI_DSTS_BIOS_BIT 0x00040000
149 #define ASUS_WMI_DSTS_BRIGHTNESS_MASK 0x000000FF
150 #define ASUS_WMI_DSTS_MAX_BRIGTH_MASK 0x0000FF00
152 #define ASUS_FAN_DESC "cpu_fan"
153 #define ASUS_FAN_MFUN 0x13
154 #define ASUS_FAN_SFUN_READ 0x06
155 #define ASUS_FAN_SFUN_WRITE 0x07
156 #define ASUS_FAN_CTRL_MANUAL 1
157 #define ASUS_FAN_CTRL_AUTO 2
159 #define USB_INTEL_XUSB2PR 0xD0
160 #define PCI_DEVICE_ID_INTEL_LYNXPOINT_LP_XHCI 0x9c31
162 static const char * const ashs_ids[] = { "ATK4001", "ATK4002", NULL };
170 * Struct that's used for all methods called via AGFN. Naming is
171 * identically to the AML code.
174 u16 mfun; /* probably "Multi-function" to be called */
175 u16 sfun; /* probably "Sub-function" to be called */
176 u16 len; /* size of the hole struct, including subfunction fields */
177 u8 stas; /* not used by now */
178 u8 err; /* zero on success */
181 /* struct used for calling fan read and write methods */
183 struct agfn_args agfn; /* common fields */
184 u8 fan; /* fan number: 0: set auto mode 1: 1st fan */
185 u32 speed; /* read: RPM/100 - write: 0-255 */
189 * <platform>/ - debugfs root directory
190 * dev_id - current dev_id
191 * ctrl_param - current ctrl_param
192 * method_id - current method_id
193 * devs - call DEVS(dev_id, ctrl_param) and print result
194 * dsts - call DSTS(dev_id) and print result
195 * call - call method_id(dev_id, ctrl_param) and print result
197 struct asus_wmi_debug {
205 struct asus_wmi *asus;
206 struct rfkill *rfkill;
215 struct input_dev *inputdev;
216 struct backlight_device *backlight_device;
217 struct platform_device *platform_device;
219 struct led_classdev wlan_led;
221 struct led_classdev tpd_led;
223 struct led_classdev kbd_led;
225 struct workqueue_struct *led_workqueue;
226 struct work_struct tpd_led_work;
227 struct work_struct kbd_led_work;
228 struct work_struct wlan_led_work;
230 struct asus_rfkill wlan;
231 struct asus_rfkill bluetooth;
232 struct asus_rfkill wimax;
233 struct asus_rfkill wwan3g;
234 struct asus_rfkill gps;
235 struct asus_rfkill uwb;
237 bool asus_hwmon_fan_manual_mode;
238 int asus_hwmon_num_fans;
241 struct hotplug_slot *hotplug_slot;
242 struct mutex hotplug_lock;
243 struct mutex wmi_lock;
244 struct workqueue_struct *hotplug_workqueue;
245 struct work_struct hotplug_work;
247 struct asus_wmi_debug debug;
249 struct asus_wmi_driver *driver;
252 static int asus_wmi_input_init(struct asus_wmi *asus)
256 asus->inputdev = input_allocate_device();
260 asus->inputdev->name = asus->driver->input_name;
261 asus->inputdev->phys = asus->driver->input_phys;
262 asus->inputdev->id.bustype = BUS_HOST;
263 asus->inputdev->dev.parent = &asus->platform_device->dev;
264 set_bit(EV_REP, asus->inputdev->evbit);
266 err = sparse_keymap_setup(asus->inputdev, asus->driver->keymap, NULL);
270 err = input_register_device(asus->inputdev);
272 goto err_free_keymap;
277 sparse_keymap_free(asus->inputdev);
279 input_free_device(asus->inputdev);
283 static void asus_wmi_input_exit(struct asus_wmi *asus)
285 if (asus->inputdev) {
286 sparse_keymap_free(asus->inputdev);
287 input_unregister_device(asus->inputdev);
290 asus->inputdev = NULL;
293 static int asus_wmi_evaluate_method(u32 method_id, u32 arg0, u32 arg1,
296 struct bios_args args = {
300 struct acpi_buffer input = { (acpi_size) sizeof(args), &args };
301 struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
303 union acpi_object *obj;
306 status = wmi_evaluate_method(ASUS_WMI_MGMT_GUID, 1, method_id,
309 if (ACPI_FAILURE(status))
312 obj = (union acpi_object *)output.pointer;
313 if (obj && obj->type == ACPI_TYPE_INTEGER)
314 tmp = (u32) obj->integer.value;
322 if (ACPI_FAILURE(status))
325 if (tmp == ASUS_WMI_UNSUPPORTED_METHOD)
331 static int asus_wmi_evaluate_method_agfn(const struct acpi_buffer args)
333 struct acpi_buffer input;
339 * Copy to dma capable address otherwise memory corruption occurs as
340 * bios has to be able to access it.
342 input.pointer = kzalloc(args.length, GFP_DMA | GFP_KERNEL);
343 input.length = args.length;
346 phys_addr = virt_to_phys(input.pointer);
347 memcpy(input.pointer, args.pointer, args.length);
349 status = asus_wmi_evaluate_method(ASUS_WMI_METHODID_AGFN,
350 phys_addr, 0, &retval);
352 memcpy(args.pointer, input.pointer, args.length);
354 kfree(input.pointer);
361 static int asus_wmi_get_devstate(struct asus_wmi *asus, u32 dev_id, u32 *retval)
363 return asus_wmi_evaluate_method(asus->dsts_id, dev_id, 0, retval);
366 static int asus_wmi_set_devstate(u32 dev_id, u32 ctrl_param,
369 return asus_wmi_evaluate_method(ASUS_WMI_METHODID_DEVS, dev_id,
373 /* Helper for special devices with magic return codes */
374 static int asus_wmi_get_devstate_bits(struct asus_wmi *asus,
375 u32 dev_id, u32 mask)
380 err = asus_wmi_get_devstate(asus, dev_id, &retval);
385 if (!(retval & ASUS_WMI_DSTS_PRESENCE_BIT))
388 if (mask == ASUS_WMI_DSTS_STATUS_BIT) {
389 if (retval & ASUS_WMI_DSTS_UNKNOWN_BIT)
393 return retval & mask;
396 static int asus_wmi_get_devstate_simple(struct asus_wmi *asus, u32 dev_id)
398 return asus_wmi_get_devstate_bits(asus, dev_id,
399 ASUS_WMI_DSTS_STATUS_BIT);
406 * These functions actually update the LED's, and are called from a
407 * workqueue. By doing this as separate work rather than when the LED
408 * subsystem asks, we avoid messing with the Asus ACPI stuff during a
409 * potentially bad time, such as a timer interrupt.
411 static void tpd_led_update(struct work_struct *work)
414 struct asus_wmi *asus;
416 asus = container_of(work, struct asus_wmi, tpd_led_work);
418 ctrl_param = asus->tpd_led_wk;
419 asus_wmi_set_devstate(ASUS_WMI_DEVID_TOUCHPAD_LED, ctrl_param, NULL);
422 static void tpd_led_set(struct led_classdev *led_cdev,
423 enum led_brightness value)
425 struct asus_wmi *asus;
427 asus = container_of(led_cdev, struct asus_wmi, tpd_led);
429 asus->tpd_led_wk = !!value;
430 queue_work(asus->led_workqueue, &asus->tpd_led_work);
433 static int read_tpd_led_state(struct asus_wmi *asus)
435 return asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_TOUCHPAD_LED);
438 static enum led_brightness tpd_led_get(struct led_classdev *led_cdev)
440 struct asus_wmi *asus;
442 asus = container_of(led_cdev, struct asus_wmi, tpd_led);
444 return read_tpd_led_state(asus);
447 static void kbd_led_update(struct work_struct *work)
450 struct asus_wmi *asus;
452 asus = container_of(work, struct asus_wmi, kbd_led_work);
456 * bit 7: light on/off
458 if (asus->kbd_led_wk > 0)
459 ctrl_param = 0x80 | (asus->kbd_led_wk & 0x7F);
461 asus_wmi_set_devstate(ASUS_WMI_DEVID_KBD_BACKLIGHT, ctrl_param, NULL);
464 static int kbd_led_read(struct asus_wmi *asus, int *level, int *env)
470 * bit 7: light on/off
471 * bit 8-10: environment (0: dark, 1: normal, 2: light)
472 * bit 17: status unknown
474 retval = asus_wmi_get_devstate_bits(asus, ASUS_WMI_DEVID_KBD_BACKLIGHT,
477 /* Unknown status is considered as off */
478 if (retval == 0x8000)
483 *level = retval & 0x7F;
485 *env = (retval >> 8) & 0x7F;
492 static void kbd_led_set(struct led_classdev *led_cdev,
493 enum led_brightness value)
495 struct asus_wmi *asus;
497 asus = container_of(led_cdev, struct asus_wmi, kbd_led);
499 if (value > asus->kbd_led.max_brightness)
500 value = asus->kbd_led.max_brightness;
504 asus->kbd_led_wk = value;
505 queue_work(asus->led_workqueue, &asus->kbd_led_work);
508 static enum led_brightness kbd_led_get(struct led_classdev *led_cdev)
510 struct asus_wmi *asus;
513 asus = container_of(led_cdev, struct asus_wmi, kbd_led);
515 retval = kbd_led_read(asus, &value, NULL);
523 static int wlan_led_unknown_state(struct asus_wmi *asus)
527 asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_WIRELESS_LED, &result);
529 return result & ASUS_WMI_DSTS_UNKNOWN_BIT;
532 static int wlan_led_presence(struct asus_wmi *asus)
536 asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_WIRELESS_LED, &result);
538 return result & ASUS_WMI_DSTS_PRESENCE_BIT;
541 static void wlan_led_update(struct work_struct *work)
544 struct asus_wmi *asus;
546 asus = container_of(work, struct asus_wmi, wlan_led_work);
548 ctrl_param = asus->wlan_led_wk;
549 asus_wmi_set_devstate(ASUS_WMI_DEVID_WIRELESS_LED, ctrl_param, NULL);
552 static void wlan_led_set(struct led_classdev *led_cdev,
553 enum led_brightness value)
555 struct asus_wmi *asus;
557 asus = container_of(led_cdev, struct asus_wmi, wlan_led);
559 asus->wlan_led_wk = !!value;
560 queue_work(asus->led_workqueue, &asus->wlan_led_work);
563 static enum led_brightness wlan_led_get(struct led_classdev *led_cdev)
565 struct asus_wmi *asus;
568 asus = container_of(led_cdev, struct asus_wmi, wlan_led);
569 asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_WIRELESS_LED, &result);
571 return result & ASUS_WMI_DSTS_BRIGHTNESS_MASK;
574 static void asus_wmi_led_exit(struct asus_wmi *asus)
576 if (!IS_ERR_OR_NULL(asus->kbd_led.dev))
577 led_classdev_unregister(&asus->kbd_led);
578 if (!IS_ERR_OR_NULL(asus->tpd_led.dev))
579 led_classdev_unregister(&asus->tpd_led);
580 if (!IS_ERR_OR_NULL(asus->wlan_led.dev))
581 led_classdev_unregister(&asus->wlan_led);
582 if (asus->led_workqueue)
583 destroy_workqueue(asus->led_workqueue);
586 static int asus_wmi_led_init(struct asus_wmi *asus)
590 asus->led_workqueue = create_singlethread_workqueue("led_workqueue");
591 if (!asus->led_workqueue)
594 if (read_tpd_led_state(asus) >= 0) {
595 INIT_WORK(&asus->tpd_led_work, tpd_led_update);
597 asus->tpd_led.name = "asus::touchpad";
598 asus->tpd_led.brightness_set = tpd_led_set;
599 asus->tpd_led.brightness_get = tpd_led_get;
600 asus->tpd_led.max_brightness = 1;
602 rv = led_classdev_register(&asus->platform_device->dev,
608 led_val = kbd_led_read(asus, NULL, NULL);
610 INIT_WORK(&asus->kbd_led_work, kbd_led_update);
612 asus->kbd_led_wk = led_val;
613 asus->kbd_led.name = "asus::kbd_backlight";
614 asus->kbd_led.brightness_set = kbd_led_set;
615 asus->kbd_led.brightness_get = kbd_led_get;
616 asus->kbd_led.max_brightness = 3;
618 rv = led_classdev_register(&asus->platform_device->dev,
624 if (wlan_led_presence(asus) && (asus->driver->quirks->wapf > 0)) {
625 INIT_WORK(&asus->wlan_led_work, wlan_led_update);
627 asus->wlan_led.name = "asus::wlan";
628 asus->wlan_led.brightness_set = wlan_led_set;
629 if (!wlan_led_unknown_state(asus))
630 asus->wlan_led.brightness_get = wlan_led_get;
631 asus->wlan_led.flags = LED_CORE_SUSPENDRESUME;
632 asus->wlan_led.max_brightness = 1;
633 asus->wlan_led.default_trigger = "asus-wlan";
635 rv = led_classdev_register(&asus->platform_device->dev,
641 asus_wmi_led_exit(asus);
648 * PCI hotplug (for wlan rfkill)
650 static bool asus_wlan_rfkill_blocked(struct asus_wmi *asus)
652 int result = asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WLAN);
659 static void asus_rfkill_hotplug(struct asus_wmi *asus)
667 mutex_lock(&asus->wmi_lock);
668 blocked = asus_wlan_rfkill_blocked(asus);
669 mutex_unlock(&asus->wmi_lock);
671 mutex_lock(&asus->hotplug_lock);
672 pci_lock_rescan_remove();
674 if (asus->wlan.rfkill)
675 rfkill_set_sw_state(asus->wlan.rfkill, blocked);
677 if (asus->hotplug_slot) {
678 bus = pci_find_bus(0, 1);
680 pr_warn("Unable to find PCI bus 1?\n");
684 if (pci_bus_read_config_dword(bus, 0, PCI_VENDOR_ID, &l)) {
685 pr_err("Unable to read PCI config space?\n");
688 absent = (l == 0xffffffff);
690 if (blocked != absent) {
691 pr_warn("BIOS says wireless lan is %s, "
692 "but the pci device is %s\n",
693 blocked ? "blocked" : "unblocked",
694 absent ? "absent" : "present");
695 pr_warn("skipped wireless hotplug as probably "
696 "inappropriate for this model\n");
701 dev = pci_get_slot(bus, 0);
703 /* Device already present */
707 dev = pci_scan_single_device(bus, 0);
709 pci_bus_assign_resources(bus);
710 pci_bus_add_device(dev);
713 dev = pci_get_slot(bus, 0);
715 pci_stop_and_remove_bus_device(dev);
722 pci_unlock_rescan_remove();
723 mutex_unlock(&asus->hotplug_lock);
726 static void asus_rfkill_notify(acpi_handle handle, u32 event, void *data)
728 struct asus_wmi *asus = data;
730 if (event != ACPI_NOTIFY_BUS_CHECK)
734 * We can't call directly asus_rfkill_hotplug because most
735 * of the time WMBC is still being executed and not reetrant.
736 * There is currently no way to tell ACPICA that we want this
737 * method to be serialized, we schedule a asus_rfkill_hotplug
738 * call later, in a safer context.
740 queue_work(asus->hotplug_workqueue, &asus->hotplug_work);
743 static int asus_register_rfkill_notifier(struct asus_wmi *asus, char *node)
748 status = acpi_get_handle(NULL, node, &handle);
750 if (ACPI_SUCCESS(status)) {
751 status = acpi_install_notify_handler(handle,
753 asus_rfkill_notify, asus);
754 if (ACPI_FAILURE(status))
755 pr_warn("Failed to register notify on %s\n", node);
762 static void asus_unregister_rfkill_notifier(struct asus_wmi *asus, char *node)
764 acpi_status status = AE_OK;
767 status = acpi_get_handle(NULL, node, &handle);
769 if (ACPI_SUCCESS(status)) {
770 status = acpi_remove_notify_handler(handle,
773 if (ACPI_FAILURE(status))
774 pr_err("Error removing rfkill notify handler %s\n",
779 static int asus_get_adapter_status(struct hotplug_slot *hotplug_slot,
782 struct asus_wmi *asus = hotplug_slot->private;
783 int result = asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WLAN);
792 static void asus_cleanup_pci_hotplug(struct hotplug_slot *hotplug_slot)
794 kfree(hotplug_slot->info);
798 static struct hotplug_slot_ops asus_hotplug_slot_ops = {
799 .owner = THIS_MODULE,
800 .get_adapter_status = asus_get_adapter_status,
801 .get_power_status = asus_get_adapter_status,
804 static void asus_hotplug_work(struct work_struct *work)
806 struct asus_wmi *asus;
808 asus = container_of(work, struct asus_wmi, hotplug_work);
809 asus_rfkill_hotplug(asus);
812 static int asus_setup_pci_hotplug(struct asus_wmi *asus)
815 struct pci_bus *bus = pci_find_bus(0, 1);
818 pr_err("Unable to find wifi PCI bus\n");
822 asus->hotplug_workqueue =
823 create_singlethread_workqueue("hotplug_workqueue");
824 if (!asus->hotplug_workqueue)
825 goto error_workqueue;
827 INIT_WORK(&asus->hotplug_work, asus_hotplug_work);
829 asus->hotplug_slot = kzalloc(sizeof(struct hotplug_slot), GFP_KERNEL);
830 if (!asus->hotplug_slot)
833 asus->hotplug_slot->info = kzalloc(sizeof(struct hotplug_slot_info),
835 if (!asus->hotplug_slot->info)
838 asus->hotplug_slot->private = asus;
839 asus->hotplug_slot->release = &asus_cleanup_pci_hotplug;
840 asus->hotplug_slot->ops = &asus_hotplug_slot_ops;
841 asus_get_adapter_status(asus->hotplug_slot,
842 &asus->hotplug_slot->info->adapter_status);
844 ret = pci_hp_register(asus->hotplug_slot, bus, 0, "asus-wifi");
846 pr_err("Unable to register hotplug slot - %d\n", ret);
853 kfree(asus->hotplug_slot->info);
855 kfree(asus->hotplug_slot);
856 asus->hotplug_slot = NULL;
858 destroy_workqueue(asus->hotplug_workqueue);
866 static int asus_rfkill_set(void *data, bool blocked)
868 struct asus_rfkill *priv = data;
869 u32 ctrl_param = !blocked;
870 u32 dev_id = priv->dev_id;
873 * If the user bit is set, BIOS can't set and record the wlan status,
874 * it will report the value read from id ASUS_WMI_DEVID_WLAN_LED
875 * while we query the wlan status through WMI(ASUS_WMI_DEVID_WLAN).
876 * So, we have to record wlan status in id ASUS_WMI_DEVID_WLAN_LED
877 * while setting the wlan status through WMI.
878 * This is also the behavior that windows app will do.
880 if ((dev_id == ASUS_WMI_DEVID_WLAN) &&
881 priv->asus->driver->wlan_ctrl_by_user)
882 dev_id = ASUS_WMI_DEVID_WLAN_LED;
884 return asus_wmi_set_devstate(dev_id, ctrl_param, NULL);
887 static void asus_rfkill_query(struct rfkill *rfkill, void *data)
889 struct asus_rfkill *priv = data;
892 result = asus_wmi_get_devstate_simple(priv->asus, priv->dev_id);
897 rfkill_set_sw_state(priv->rfkill, !result);
900 static int asus_rfkill_wlan_set(void *data, bool blocked)
902 struct asus_rfkill *priv = data;
903 struct asus_wmi *asus = priv->asus;
907 * This handler is enabled only if hotplug is enabled.
908 * In this case, the asus_wmi_set_devstate() will
909 * trigger a wmi notification and we need to wait
910 * this call to finish before being able to call
913 mutex_lock(&asus->wmi_lock);
914 ret = asus_rfkill_set(data, blocked);
915 mutex_unlock(&asus->wmi_lock);
919 static const struct rfkill_ops asus_rfkill_wlan_ops = {
920 .set_block = asus_rfkill_wlan_set,
921 .query = asus_rfkill_query,
924 static const struct rfkill_ops asus_rfkill_ops = {
925 .set_block = asus_rfkill_set,
926 .query = asus_rfkill_query,
929 static int asus_new_rfkill(struct asus_wmi *asus,
930 struct asus_rfkill *arfkill,
931 const char *name, enum rfkill_type type, int dev_id)
933 int result = asus_wmi_get_devstate_simple(asus, dev_id);
934 struct rfkill **rfkill = &arfkill->rfkill;
939 arfkill->dev_id = dev_id;
940 arfkill->asus = asus;
942 if (dev_id == ASUS_WMI_DEVID_WLAN &&
943 asus->driver->quirks->hotplug_wireless)
944 *rfkill = rfkill_alloc(name, &asus->platform_device->dev, type,
945 &asus_rfkill_wlan_ops, arfkill);
947 *rfkill = rfkill_alloc(name, &asus->platform_device->dev, type,
948 &asus_rfkill_ops, arfkill);
953 if ((dev_id == ASUS_WMI_DEVID_WLAN) &&
954 (asus->driver->quirks->wapf > 0))
955 rfkill_set_led_trigger_name(*rfkill, "asus-wlan");
957 rfkill_init_sw_state(*rfkill, !result);
958 result = rfkill_register(*rfkill);
960 rfkill_destroy(*rfkill);
967 static void asus_wmi_rfkill_exit(struct asus_wmi *asus)
969 asus_unregister_rfkill_notifier(asus, "\\_SB.PCI0.P0P5");
970 asus_unregister_rfkill_notifier(asus, "\\_SB.PCI0.P0P6");
971 asus_unregister_rfkill_notifier(asus, "\\_SB.PCI0.P0P7");
972 if (asus->wlan.rfkill) {
973 rfkill_unregister(asus->wlan.rfkill);
974 rfkill_destroy(asus->wlan.rfkill);
975 asus->wlan.rfkill = NULL;
978 * Refresh pci hotplug in case the rfkill state was changed after
979 * asus_unregister_rfkill_notifier()
981 asus_rfkill_hotplug(asus);
982 if (asus->hotplug_slot)
983 pci_hp_deregister(asus->hotplug_slot);
984 if (asus->hotplug_workqueue)
985 destroy_workqueue(asus->hotplug_workqueue);
987 if (asus->bluetooth.rfkill) {
988 rfkill_unregister(asus->bluetooth.rfkill);
989 rfkill_destroy(asus->bluetooth.rfkill);
990 asus->bluetooth.rfkill = NULL;
992 if (asus->wimax.rfkill) {
993 rfkill_unregister(asus->wimax.rfkill);
994 rfkill_destroy(asus->wimax.rfkill);
995 asus->wimax.rfkill = NULL;
997 if (asus->wwan3g.rfkill) {
998 rfkill_unregister(asus->wwan3g.rfkill);
999 rfkill_destroy(asus->wwan3g.rfkill);
1000 asus->wwan3g.rfkill = NULL;
1002 if (asus->gps.rfkill) {
1003 rfkill_unregister(asus->gps.rfkill);
1004 rfkill_destroy(asus->gps.rfkill);
1005 asus->gps.rfkill = NULL;
1007 if (asus->uwb.rfkill) {
1008 rfkill_unregister(asus->uwb.rfkill);
1009 rfkill_destroy(asus->uwb.rfkill);
1010 asus->uwb.rfkill = NULL;
1014 static int asus_wmi_rfkill_init(struct asus_wmi *asus)
1018 mutex_init(&asus->hotplug_lock);
1019 mutex_init(&asus->wmi_lock);
1021 result = asus_new_rfkill(asus, &asus->wlan, "asus-wlan",
1022 RFKILL_TYPE_WLAN, ASUS_WMI_DEVID_WLAN);
1024 if (result && result != -ENODEV)
1027 result = asus_new_rfkill(asus, &asus->bluetooth,
1028 "asus-bluetooth", RFKILL_TYPE_BLUETOOTH,
1029 ASUS_WMI_DEVID_BLUETOOTH);
1031 if (result && result != -ENODEV)
1034 result = asus_new_rfkill(asus, &asus->wimax, "asus-wimax",
1035 RFKILL_TYPE_WIMAX, ASUS_WMI_DEVID_WIMAX);
1037 if (result && result != -ENODEV)
1040 result = asus_new_rfkill(asus, &asus->wwan3g, "asus-wwan3g",
1041 RFKILL_TYPE_WWAN, ASUS_WMI_DEVID_WWAN3G);
1043 if (result && result != -ENODEV)
1046 result = asus_new_rfkill(asus, &asus->gps, "asus-gps",
1047 RFKILL_TYPE_GPS, ASUS_WMI_DEVID_GPS);
1049 if (result && result != -ENODEV)
1052 result = asus_new_rfkill(asus, &asus->uwb, "asus-uwb",
1053 RFKILL_TYPE_UWB, ASUS_WMI_DEVID_UWB);
1055 if (result && result != -ENODEV)
1058 if (!asus->driver->quirks->hotplug_wireless)
1061 result = asus_setup_pci_hotplug(asus);
1063 * If we get -EBUSY then something else is handling the PCI hotplug -
1064 * don't fail in this case
1066 if (result == -EBUSY)
1069 asus_register_rfkill_notifier(asus, "\\_SB.PCI0.P0P5");
1070 asus_register_rfkill_notifier(asus, "\\_SB.PCI0.P0P6");
1071 asus_register_rfkill_notifier(asus, "\\_SB.PCI0.P0P7");
1073 * Refresh pci hotplug in case the rfkill state was changed during
1076 asus_rfkill_hotplug(asus);
1079 if (result && result != -ENODEV)
1080 asus_wmi_rfkill_exit(asus);
1082 if (result == -ENODEV)
1088 static void asus_wmi_set_xusb2pr(struct asus_wmi *asus)
1090 struct pci_dev *xhci_pdev;
1091 u32 orig_ports_available;
1092 u32 ports_available = asus->driver->quirks->xusb2pr;
1094 xhci_pdev = pci_get_device(PCI_VENDOR_ID_INTEL,
1095 PCI_DEVICE_ID_INTEL_LYNXPOINT_LP_XHCI,
1101 pci_read_config_dword(xhci_pdev, USB_INTEL_XUSB2PR,
1102 &orig_ports_available);
1104 pci_write_config_dword(xhci_pdev, USB_INTEL_XUSB2PR,
1105 cpu_to_le32(ports_available));
1107 pr_info("set USB_INTEL_XUSB2PR old: 0x%04x, new: 0x%04x\n",
1108 orig_ports_available, ports_available);
1114 static int asus_hwmon_agfn_fan_speed_read(struct asus_wmi *asus, int fan,
1117 struct fan_args args = {
1118 .agfn.len = sizeof(args),
1119 .agfn.mfun = ASUS_FAN_MFUN,
1120 .agfn.sfun = ASUS_FAN_SFUN_READ,
1124 struct acpi_buffer input = { (acpi_size) sizeof(args), &args };
1130 status = asus_wmi_evaluate_method_agfn(input);
1132 if (status || args.agfn.err)
1136 *speed = args.speed;
1141 static int asus_hwmon_agfn_fan_speed_write(struct asus_wmi *asus, int fan,
1144 struct fan_args args = {
1145 .agfn.len = sizeof(args),
1146 .agfn.mfun = ASUS_FAN_MFUN,
1147 .agfn.sfun = ASUS_FAN_SFUN_WRITE,
1149 .speed = speed ? *speed : 0,
1151 struct acpi_buffer input = { (acpi_size) sizeof(args), &args };
1154 /* 1: for setting 1st fan's speed 0: setting auto mode */
1155 if (fan != 1 && fan != 0)
1158 status = asus_wmi_evaluate_method_agfn(input);
1160 if (status || args.agfn.err)
1163 if (speed && fan == 1)
1164 asus->asus_hwmon_pwm = *speed;
1170 * Check if we can read the speed of one fan. If true we assume we can also
1173 static int asus_hwmon_get_fan_number(struct asus_wmi *asus, int *num_fans)
1180 status = asus_hwmon_agfn_fan_speed_read(asus, 1, &speed);
1187 static int asus_hwmon_fan_set_auto(struct asus_wmi *asus)
1191 status = asus_hwmon_agfn_fan_speed_write(asus, 0, NULL);
1195 asus->asus_hwmon_fan_manual_mode = false;
1200 static int asus_hwmon_fan_rpm_show(struct device *dev, int fan)
1202 struct asus_wmi *asus = dev_get_drvdata(dev);
1206 /* no speed readable on manual mode */
1207 if (asus->asus_hwmon_fan_manual_mode)
1210 ret = asus_hwmon_agfn_fan_speed_read(asus, fan+1, &value);
1212 pr_warn("reading fan speed failed: %d\n", ret);
1219 static void asus_hwmon_pwm_show(struct asus_wmi *asus, int fan, int *value)
1223 if (asus->asus_hwmon_pwm >= 0) {
1224 *value = asus->asus_hwmon_pwm;
1228 err = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_FAN_CTRL, value);
1234 if (*value == 1) /* Low Speed */
1236 else if (*value == 2)
1238 else if (*value == 3)
1241 pr_err("Unknown fan speed %#x\n", *value);
1246 static ssize_t pwm1_show(struct device *dev,
1247 struct device_attribute *attr,
1250 struct asus_wmi *asus = dev_get_drvdata(dev);
1253 asus_hwmon_pwm_show(asus, 0, &value);
1255 return sprintf(buf, "%d\n", value);
1258 static ssize_t pwm1_store(struct device *dev,
1259 struct device_attribute *attr,
1260 const char *buf, size_t count) {
1261 struct asus_wmi *asus = dev_get_drvdata(dev);
1266 ret = kstrtouint(buf, 10, &value);
1271 value = clamp(value, 0, 255);
1273 state = asus_hwmon_agfn_fan_speed_write(asus, 1, &value);
1275 pr_warn("Setting fan speed failed: %d\n", state);
1277 asus->asus_hwmon_fan_manual_mode = true;
1282 static ssize_t fan1_input_show(struct device *dev,
1283 struct device_attribute *attr,
1286 int value = asus_hwmon_fan_rpm_show(dev, 0);
1288 return sprintf(buf, "%d\n", value < 0 ? -1 : value*100);
1292 static ssize_t pwm1_enable_show(struct device *dev,
1293 struct device_attribute *attr,
1296 struct asus_wmi *asus = dev_get_drvdata(dev);
1298 if (asus->asus_hwmon_fan_manual_mode)
1299 return sprintf(buf, "%d\n", ASUS_FAN_CTRL_MANUAL);
1301 return sprintf(buf, "%d\n", ASUS_FAN_CTRL_AUTO);
1304 static ssize_t pwm1_enable_store(struct device *dev,
1305 struct device_attribute *attr,
1306 const char *buf, size_t count)
1308 struct asus_wmi *asus = dev_get_drvdata(dev);
1313 ret = kstrtouint(buf, 10, &state);
1318 if (state == ASUS_FAN_CTRL_MANUAL)
1319 asus->asus_hwmon_fan_manual_mode = true;
1321 status = asus_hwmon_fan_set_auto(asus);
1329 static ssize_t fan1_label_show(struct device *dev,
1330 struct device_attribute *attr,
1333 return sprintf(buf, "%s\n", ASUS_FAN_DESC);
1336 static ssize_t asus_hwmon_temp1(struct device *dev,
1337 struct device_attribute *attr,
1340 struct asus_wmi *asus = dev_get_drvdata(dev);
1344 err = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_THERMAL_CTRL, &value);
1349 value = DECI_KELVIN_TO_CELSIUS((value & 0xFFFF)) * 1000;
1351 return sprintf(buf, "%d\n", value);
1355 static DEVICE_ATTR_RW(pwm1);
1356 static DEVICE_ATTR_RW(pwm1_enable);
1357 static DEVICE_ATTR_RO(fan1_input);
1358 static DEVICE_ATTR_RO(fan1_label);
1361 static DEVICE_ATTR(temp1_input, S_IRUGO, asus_hwmon_temp1, NULL);
1363 static struct attribute *hwmon_attributes[] = {
1364 &dev_attr_pwm1.attr,
1365 &dev_attr_pwm1_enable.attr,
1366 &dev_attr_fan1_input.attr,
1367 &dev_attr_fan1_label.attr,
1369 &dev_attr_temp1_input.attr,
1373 static umode_t asus_hwmon_sysfs_is_visible(struct kobject *kobj,
1374 struct attribute *attr, int idx)
1376 struct device *dev = container_of(kobj, struct device, kobj);
1377 struct platform_device *pdev = to_platform_device(dev->parent);
1378 struct asus_wmi *asus = platform_get_drvdata(pdev);
1381 u32 value = ASUS_WMI_UNSUPPORTED_METHOD;
1384 if (attr == &dev_attr_pwm1.attr)
1385 dev_id = ASUS_WMI_DEVID_FAN_CTRL;
1386 else if (attr == &dev_attr_temp1_input.attr)
1387 dev_id = ASUS_WMI_DEVID_THERMAL_CTRL;
1390 if (attr == &dev_attr_fan1_input.attr
1391 || attr == &dev_attr_fan1_label.attr
1392 || attr == &dev_attr_pwm1.attr
1393 || attr == &dev_attr_pwm1_enable.attr) {
1398 int err = asus_wmi_get_devstate(asus, dev_id, &value);
1400 if (err < 0 && fan_attr == -1)
1401 return 0; /* can't return negative here */
1404 if (dev_id == ASUS_WMI_DEVID_FAN_CTRL) {
1406 * We need to find a better way, probably using sfun,
1408 * Currently we disable it if:
1409 * - ASUS_WMI_UNSUPPORTED_METHOD is returned
1410 * - reverved bits are non-zero
1411 * - sfun and presence bit are not set
1413 if (value == ASUS_WMI_UNSUPPORTED_METHOD || value & 0xFFF80000
1414 || (!asus->sfun && !(value & ASUS_WMI_DSTS_PRESENCE_BIT)))
1417 ok = fan_attr <= asus->asus_hwmon_num_fans;
1418 } else if (dev_id == ASUS_WMI_DEVID_THERMAL_CTRL) {
1419 /* If value is zero, something is clearly wrong */
1422 } else if (fan_attr <= asus->asus_hwmon_num_fans && fan_attr != -1) {
1428 return ok ? attr->mode : 0;
1431 static struct attribute_group hwmon_attribute_group = {
1432 .is_visible = asus_hwmon_sysfs_is_visible,
1433 .attrs = hwmon_attributes
1435 __ATTRIBUTE_GROUPS(hwmon_attribute);
1437 static int asus_wmi_hwmon_init(struct asus_wmi *asus)
1439 struct device *hwmon;
1441 hwmon = hwmon_device_register_with_groups(&asus->platform_device->dev,
1443 hwmon_attribute_groups);
1444 if (IS_ERR(hwmon)) {
1445 pr_err("Could not register asus hwmon device\n");
1446 return PTR_ERR(hwmon);
1454 static int read_backlight_power(struct asus_wmi *asus)
1457 if (asus->driver->quirks->store_backlight_power)
1458 ret = !asus->driver->panel_power;
1460 ret = asus_wmi_get_devstate_simple(asus,
1461 ASUS_WMI_DEVID_BACKLIGHT);
1466 return ret ? FB_BLANK_UNBLANK : FB_BLANK_POWERDOWN;
1469 static int read_brightness_max(struct asus_wmi *asus)
1474 err = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_BRIGHTNESS, &retval);
1479 retval = retval & ASUS_WMI_DSTS_MAX_BRIGTH_MASK;
1488 static int read_brightness(struct backlight_device *bd)
1490 struct asus_wmi *asus = bl_get_data(bd);
1494 err = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_BRIGHTNESS, &retval);
1499 return retval & ASUS_WMI_DSTS_BRIGHTNESS_MASK;
1502 static u32 get_scalar_command(struct backlight_device *bd)
1504 struct asus_wmi *asus = bl_get_data(bd);
1507 if ((asus->driver->brightness < bd->props.brightness) ||
1508 bd->props.brightness == bd->props.max_brightness)
1509 ctrl_param = 0x00008001;
1510 else if ((asus->driver->brightness > bd->props.brightness) ||
1511 bd->props.brightness == 0)
1512 ctrl_param = 0x00008000;
1514 asus->driver->brightness = bd->props.brightness;
1519 static int update_bl_status(struct backlight_device *bd)
1521 struct asus_wmi *asus = bl_get_data(bd);
1525 power = read_backlight_power(asus);
1526 if (power != -ENODEV && bd->props.power != power) {
1527 ctrl_param = !!(bd->props.power == FB_BLANK_UNBLANK);
1528 err = asus_wmi_set_devstate(ASUS_WMI_DEVID_BACKLIGHT,
1530 if (asus->driver->quirks->store_backlight_power)
1531 asus->driver->panel_power = bd->props.power;
1533 /* When using scalar brightness, updating the brightness
1534 * will mess with the backlight power */
1535 if (asus->driver->quirks->scalar_panel_brightness)
1539 if (asus->driver->quirks->scalar_panel_brightness)
1540 ctrl_param = get_scalar_command(bd);
1542 ctrl_param = bd->props.brightness;
1544 err = asus_wmi_set_devstate(ASUS_WMI_DEVID_BRIGHTNESS,
1550 static const struct backlight_ops asus_wmi_bl_ops = {
1551 .get_brightness = read_brightness,
1552 .update_status = update_bl_status,
1555 static int asus_wmi_backlight_notify(struct asus_wmi *asus, int code)
1557 struct backlight_device *bd = asus->backlight_device;
1558 int old = bd->props.brightness;
1561 if (code >= NOTIFY_BRNUP_MIN && code <= NOTIFY_BRNUP_MAX)
1562 new = code - NOTIFY_BRNUP_MIN + 1;
1563 else if (code >= NOTIFY_BRNDOWN_MIN && code <= NOTIFY_BRNDOWN_MAX)
1564 new = code - NOTIFY_BRNDOWN_MIN;
1566 bd->props.brightness = new;
1567 backlight_update_status(bd);
1568 backlight_force_update(bd, BACKLIGHT_UPDATE_HOTKEY);
1573 static int asus_wmi_backlight_init(struct asus_wmi *asus)
1575 struct backlight_device *bd;
1576 struct backlight_properties props;
1580 max = read_brightness_max(asus);
1584 power = read_backlight_power(asus);
1586 if (power == -ENODEV)
1587 power = FB_BLANK_UNBLANK;
1591 memset(&props, 0, sizeof(struct backlight_properties));
1592 props.type = BACKLIGHT_PLATFORM;
1593 props.max_brightness = max;
1594 bd = backlight_device_register(asus->driver->name,
1595 &asus->platform_device->dev, asus,
1596 &asus_wmi_bl_ops, &props);
1598 pr_err("Could not register backlight device\n");
1602 asus->backlight_device = bd;
1604 if (asus->driver->quirks->store_backlight_power)
1605 asus->driver->panel_power = power;
1607 bd->props.brightness = read_brightness(bd);
1608 bd->props.power = power;
1609 backlight_update_status(bd);
1611 asus->driver->brightness = bd->props.brightness;
1616 static void asus_wmi_backlight_exit(struct asus_wmi *asus)
1618 backlight_device_unregister(asus->backlight_device);
1620 asus->backlight_device = NULL;
1623 static int is_display_toggle(int code)
1625 /* display toggle keys */
1626 if ((code >= 0x61 && code <= 0x67) ||
1627 (code >= 0x8c && code <= 0x93) ||
1628 (code >= 0xa0 && code <= 0xa7) ||
1629 (code >= 0xd0 && code <= 0xd5))
1635 static void asus_wmi_notify(u32 value, void *context)
1637 struct asus_wmi *asus = context;
1638 struct acpi_buffer response = { ACPI_ALLOCATE_BUFFER, NULL };
1639 union acpi_object *obj;
1643 unsigned int key_value = 1;
1644 bool autorelease = 1;
1646 status = wmi_get_event_data(value, &response);
1647 if (status != AE_OK) {
1648 pr_err("bad event status 0x%x\n", status);
1652 obj = (union acpi_object *)response.pointer;
1654 if (!obj || obj->type != ACPI_TYPE_INTEGER)
1657 code = obj->integer.value;
1660 if (asus->driver->key_filter) {
1661 asus->driver->key_filter(asus->driver, &code, &key_value,
1663 if (code == ASUS_WMI_KEY_IGNORE)
1667 if (code >= NOTIFY_BRNUP_MIN && code <= NOTIFY_BRNUP_MAX)
1668 code = ASUS_WMI_BRN_UP;
1669 else if (code >= NOTIFY_BRNDOWN_MIN &&
1670 code <= NOTIFY_BRNDOWN_MAX)
1671 code = ASUS_WMI_BRN_DOWN;
1673 if (code == ASUS_WMI_BRN_DOWN || code == ASUS_WMI_BRN_UP) {
1674 if (acpi_video_get_backlight_type() == acpi_backlight_vendor) {
1675 asus_wmi_backlight_notify(asus, orig_code);
1680 if (is_display_toggle(code) &&
1681 asus->driver->quirks->no_display_toggle)
1684 if (!sparse_keymap_report_event(asus->inputdev, code,
1685 key_value, autorelease))
1686 pr_info("Unknown key %x pressed\n", code);
1695 static int parse_arg(const char *buf, unsigned long count, int *val)
1699 if (sscanf(buf, "%i", val) != 1)
1704 static ssize_t store_sys_wmi(struct asus_wmi *asus, int devid,
1705 const char *buf, size_t count)
1710 value = asus_wmi_get_devstate_simple(asus, devid);
1714 rv = parse_arg(buf, count, &value);
1715 err = asus_wmi_set_devstate(devid, value, &retval);
1723 static ssize_t show_sys_wmi(struct asus_wmi *asus, int devid, char *buf)
1725 int value = asus_wmi_get_devstate_simple(asus, devid);
1730 return sprintf(buf, "%d\n", value);
1733 #define ASUS_WMI_CREATE_DEVICE_ATTR(_name, _mode, _cm) \
1734 static ssize_t show_##_name(struct device *dev, \
1735 struct device_attribute *attr, \
1738 struct asus_wmi *asus = dev_get_drvdata(dev); \
1740 return show_sys_wmi(asus, _cm, buf); \
1742 static ssize_t store_##_name(struct device *dev, \
1743 struct device_attribute *attr, \
1744 const char *buf, size_t count) \
1746 struct asus_wmi *asus = dev_get_drvdata(dev); \
1748 return store_sys_wmi(asus, _cm, buf, count); \
1750 static struct device_attribute dev_attr_##_name = { \
1752 .name = __stringify(_name), \
1754 .show = show_##_name, \
1755 .store = store_##_name, \
1758 ASUS_WMI_CREATE_DEVICE_ATTR(touchpad, 0644, ASUS_WMI_DEVID_TOUCHPAD);
1759 ASUS_WMI_CREATE_DEVICE_ATTR(camera, 0644, ASUS_WMI_DEVID_CAMERA);
1760 ASUS_WMI_CREATE_DEVICE_ATTR(cardr, 0644, ASUS_WMI_DEVID_CARDREADER);
1761 ASUS_WMI_CREATE_DEVICE_ATTR(lid_resume, 0644, ASUS_WMI_DEVID_LID_RESUME);
1762 ASUS_WMI_CREATE_DEVICE_ATTR(als_enable, 0644, ASUS_WMI_DEVID_ALS_ENABLE);
1764 static ssize_t store_cpufv(struct device *dev, struct device_attribute *attr,
1765 const char *buf, size_t count)
1769 if (!count || sscanf(buf, "%i", &value) != 1)
1771 if (value < 0 || value > 2)
1774 rv = asus_wmi_evaluate_method(ASUS_WMI_METHODID_CFVS, value, 0, NULL);
1781 static DEVICE_ATTR(cpufv, S_IRUGO | S_IWUSR, NULL, store_cpufv);
1783 static struct attribute *platform_attributes[] = {
1784 &dev_attr_cpufv.attr,
1785 &dev_attr_camera.attr,
1786 &dev_attr_cardr.attr,
1787 &dev_attr_touchpad.attr,
1788 &dev_attr_lid_resume.attr,
1789 &dev_attr_als_enable.attr,
1793 static umode_t asus_sysfs_is_visible(struct kobject *kobj,
1794 struct attribute *attr, int idx)
1796 struct device *dev = container_of(kobj, struct device, kobj);
1797 struct platform_device *pdev = to_platform_device(dev);
1798 struct asus_wmi *asus = platform_get_drvdata(pdev);
1802 if (attr == &dev_attr_camera.attr)
1803 devid = ASUS_WMI_DEVID_CAMERA;
1804 else if (attr == &dev_attr_cardr.attr)
1805 devid = ASUS_WMI_DEVID_CARDREADER;
1806 else if (attr == &dev_attr_touchpad.attr)
1807 devid = ASUS_WMI_DEVID_TOUCHPAD;
1808 else if (attr == &dev_attr_lid_resume.attr)
1809 devid = ASUS_WMI_DEVID_LID_RESUME;
1810 else if (attr == &dev_attr_als_enable.attr)
1811 devid = ASUS_WMI_DEVID_ALS_ENABLE;
1814 ok = !(asus_wmi_get_devstate_simple(asus, devid) < 0);
1816 return ok ? attr->mode : 0;
1819 static struct attribute_group platform_attribute_group = {
1820 .is_visible = asus_sysfs_is_visible,
1821 .attrs = platform_attributes
1824 static void asus_wmi_sysfs_exit(struct platform_device *device)
1826 sysfs_remove_group(&device->dev.kobj, &platform_attribute_group);
1829 static int asus_wmi_sysfs_init(struct platform_device *device)
1831 return sysfs_create_group(&device->dev.kobj, &platform_attribute_group);
1837 static int asus_wmi_platform_init(struct asus_wmi *asus)
1841 /* INIT enable hotkeys on some models */
1842 if (!asus_wmi_evaluate_method(ASUS_WMI_METHODID_INIT, 0, 0, &rv))
1843 pr_info("Initialization: %#x\n", rv);
1845 /* We don't know yet what to do with this version... */
1846 if (!asus_wmi_evaluate_method(ASUS_WMI_METHODID_SPEC, 0, 0x9, &rv)) {
1847 pr_info("BIOS WMI version: %d.%d\n", rv >> 16, rv & 0xFF);
1852 * The SFUN method probably allows the original driver to get the list
1853 * of features supported by a given model. For now, 0x0100 or 0x0800
1854 * bit signifies that the laptop is equipped with a Wi-Fi MiniPCI card.
1855 * The significance of others is yet to be found.
1857 if (!asus_wmi_evaluate_method(ASUS_WMI_METHODID_SFUN, 0, 0, &rv)) {
1858 pr_info("SFUN value: %#x\n", rv);
1863 * Eee PC and Notebooks seems to have different method_id for DSTS,
1864 * but it may also be related to the BIOS's SPEC.
1865 * Note, on most Eeepc, there is no way to check if a method exist
1866 * or note, while on notebooks, they returns 0xFFFFFFFE on failure,
1867 * but once again, SPEC may probably be used for that kind of things.
1869 if (!asus_wmi_evaluate_method(ASUS_WMI_METHODID_DSTS, 0, 0, NULL))
1870 asus->dsts_id = ASUS_WMI_METHODID_DSTS;
1872 asus->dsts_id = ASUS_WMI_METHODID_DSTS2;
1874 /* CWAP allow to define the behavior of the Fn+F2 key,
1875 * this method doesn't seems to be present on Eee PCs */
1876 if (asus->driver->quirks->wapf >= 0)
1877 asus_wmi_set_devstate(ASUS_WMI_DEVID_CWAP,
1878 asus->driver->quirks->wapf, NULL);
1880 return asus_wmi_sysfs_init(asus->platform_device);
1883 static void asus_wmi_platform_exit(struct asus_wmi *asus)
1885 asus_wmi_sysfs_exit(asus->platform_device);
1891 struct asus_wmi_debugfs_node {
1892 struct asus_wmi *asus;
1894 int (*show) (struct seq_file *m, void *data);
1897 static int show_dsts(struct seq_file *m, void *data)
1899 struct asus_wmi *asus = m->private;
1903 err = asus_wmi_get_devstate(asus, asus->debug.dev_id, &retval);
1908 seq_printf(m, "DSTS(%#x) = %#x\n", asus->debug.dev_id, retval);
1913 static int show_devs(struct seq_file *m, void *data)
1915 struct asus_wmi *asus = m->private;
1919 err = asus_wmi_set_devstate(asus->debug.dev_id, asus->debug.ctrl_param,
1925 seq_printf(m, "DEVS(%#x, %#x) = %#x\n", asus->debug.dev_id,
1926 asus->debug.ctrl_param, retval);
1931 static int show_call(struct seq_file *m, void *data)
1933 struct asus_wmi *asus = m->private;
1934 struct bios_args args = {
1935 .arg0 = asus->debug.dev_id,
1936 .arg1 = asus->debug.ctrl_param,
1938 struct acpi_buffer input = { (acpi_size) sizeof(args), &args };
1939 struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
1940 union acpi_object *obj;
1943 status = wmi_evaluate_method(ASUS_WMI_MGMT_GUID,
1944 1, asus->debug.method_id,
1947 if (ACPI_FAILURE(status))
1950 obj = (union acpi_object *)output.pointer;
1951 if (obj && obj->type == ACPI_TYPE_INTEGER)
1952 seq_printf(m, "%#x(%#x, %#x) = %#x\n", asus->debug.method_id,
1953 asus->debug.dev_id, asus->debug.ctrl_param,
1954 (u32) obj->integer.value);
1956 seq_printf(m, "%#x(%#x, %#x) = t:%d\n", asus->debug.method_id,
1957 asus->debug.dev_id, asus->debug.ctrl_param,
1958 obj ? obj->type : -1);
1965 static struct asus_wmi_debugfs_node asus_wmi_debug_files[] = {
1966 {NULL, "devs", show_devs},
1967 {NULL, "dsts", show_dsts},
1968 {NULL, "call", show_call},
1971 static int asus_wmi_debugfs_open(struct inode *inode, struct file *file)
1973 struct asus_wmi_debugfs_node *node = inode->i_private;
1975 return single_open(file, node->show, node->asus);
1978 static const struct file_operations asus_wmi_debugfs_io_ops = {
1979 .owner = THIS_MODULE,
1980 .open = asus_wmi_debugfs_open,
1982 .llseek = seq_lseek,
1983 .release = single_release,
1986 static void asus_wmi_debugfs_exit(struct asus_wmi *asus)
1988 debugfs_remove_recursive(asus->debug.root);
1991 static int asus_wmi_debugfs_init(struct asus_wmi *asus)
1993 struct dentry *dent;
1996 asus->debug.root = debugfs_create_dir(asus->driver->name, NULL);
1997 if (!asus->debug.root) {
1998 pr_err("failed to create debugfs directory\n");
2002 dent = debugfs_create_x32("method_id", S_IRUGO | S_IWUSR,
2003 asus->debug.root, &asus->debug.method_id);
2007 dent = debugfs_create_x32("dev_id", S_IRUGO | S_IWUSR,
2008 asus->debug.root, &asus->debug.dev_id);
2012 dent = debugfs_create_x32("ctrl_param", S_IRUGO | S_IWUSR,
2013 asus->debug.root, &asus->debug.ctrl_param);
2017 for (i = 0; i < ARRAY_SIZE(asus_wmi_debug_files); i++) {
2018 struct asus_wmi_debugfs_node *node = &asus_wmi_debug_files[i];
2021 dent = debugfs_create_file(node->name, S_IFREG | S_IRUGO,
2022 asus->debug.root, node,
2023 &asus_wmi_debugfs_io_ops);
2025 pr_err("failed to create debug file: %s\n", node->name);
2033 asus_wmi_debugfs_exit(asus);
2037 static int asus_wmi_fan_init(struct asus_wmi *asus)
2041 asus->asus_hwmon_pwm = -1;
2042 asus->asus_hwmon_num_fans = -1;
2043 asus->asus_hwmon_fan_manual_mode = false;
2045 status = asus_hwmon_get_fan_number(asus, &asus->asus_hwmon_num_fans);
2047 asus->asus_hwmon_num_fans = 0;
2048 pr_warn("Could not determine number of fans: %d\n", status);
2052 pr_info("Number of fans: %d\n", asus->asus_hwmon_num_fans);
2056 static bool ashs_present(void)
2059 while (ashs_ids[i]) {
2060 if (acpi_dev_found(ashs_ids[i++]))
2069 static int asus_wmi_add(struct platform_device *pdev)
2071 struct platform_driver *pdrv = to_platform_driver(pdev->dev.driver);
2072 struct asus_wmi_driver *wdrv = to_asus_wmi_driver(pdrv);
2073 struct asus_wmi *asus;
2074 const char *chassis_type;
2079 asus = kzalloc(sizeof(struct asus_wmi), GFP_KERNEL);
2083 asus->driver = wdrv;
2084 asus->platform_device = pdev;
2085 wdrv->platform_device = pdev;
2086 platform_set_drvdata(asus->platform_device, asus);
2088 if (wdrv->detect_quirks)
2089 wdrv->detect_quirks(asus->driver);
2091 err = asus_wmi_platform_init(asus);
2095 err = asus_wmi_input_init(asus);
2099 err = asus_wmi_fan_init(asus); /* probably no problems on error */
2100 asus_hwmon_fan_set_auto(asus);
2102 err = asus_wmi_hwmon_init(asus);
2106 err = asus_wmi_led_init(asus);
2110 asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_WLAN, &result);
2111 if (result & (ASUS_WMI_DSTS_PRESENCE_BIT | ASUS_WMI_DSTS_USER_BIT))
2112 asus->driver->wlan_ctrl_by_user = 1;
2114 if (!(asus->driver->wlan_ctrl_by_user && ashs_present())) {
2115 err = asus_wmi_rfkill_init(asus);
2120 /* Some Asus desktop boards export an acpi-video backlight interface,
2121 stop this from showing up */
2122 chassis_type = dmi_get_system_info(DMI_CHASSIS_TYPE);
2123 if (chassis_type && !strcmp(chassis_type, "3"))
2124 acpi_video_set_dmi_backlight_type(acpi_backlight_vendor);
2126 if (asus->driver->quirks->wmi_backlight_power)
2127 acpi_video_set_dmi_backlight_type(acpi_backlight_vendor);
2129 if (asus->driver->quirks->wmi_backlight_native)
2130 acpi_video_set_dmi_backlight_type(acpi_backlight_native);
2132 if (asus->driver->quirks->xusb2pr)
2133 asus_wmi_set_xusb2pr(asus);
2135 if (acpi_video_get_backlight_type() == acpi_backlight_vendor) {
2136 err = asus_wmi_backlight_init(asus);
2137 if (err && err != -ENODEV)
2138 goto fail_backlight;
2141 status = wmi_install_notify_handler(asus->driver->event_guid,
2142 asus_wmi_notify, asus);
2143 if (ACPI_FAILURE(status)) {
2144 pr_err("Unable to register notify handler - %d\n", status);
2146 goto fail_wmi_handler;
2149 err = asus_wmi_debugfs_init(asus);
2156 wmi_remove_notify_handler(asus->driver->event_guid);
2158 asus_wmi_backlight_exit(asus);
2160 asus_wmi_rfkill_exit(asus);
2162 asus_wmi_led_exit(asus);
2165 asus_wmi_input_exit(asus);
2167 asus_wmi_platform_exit(asus);
2173 static int asus_wmi_remove(struct platform_device *device)
2175 struct asus_wmi *asus;
2177 asus = platform_get_drvdata(device);
2178 wmi_remove_notify_handler(asus->driver->event_guid);
2179 asus_wmi_backlight_exit(asus);
2180 asus_wmi_input_exit(asus);
2181 asus_wmi_led_exit(asus);
2182 asus_wmi_rfkill_exit(asus);
2183 asus_wmi_debugfs_exit(asus);
2184 asus_wmi_platform_exit(asus);
2185 asus_hwmon_fan_set_auto(asus);
2192 * Platform driver - hibernate/resume callbacks
2194 static int asus_hotk_thaw(struct device *device)
2196 struct asus_wmi *asus = dev_get_drvdata(device);
2198 if (asus->wlan.rfkill) {
2202 * Work around bios bug - acpi _PTS turns off the wireless led
2203 * during suspend. Normally it restores it on resume, but
2204 * we should kick it ourselves in case hibernation is aborted.
2206 wlan = asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WLAN);
2207 asus_wmi_set_devstate(ASUS_WMI_DEVID_WLAN, wlan, NULL);
2213 static int asus_hotk_resume(struct device *device)
2215 struct asus_wmi *asus = dev_get_drvdata(device);
2217 if (!IS_ERR_OR_NULL(asus->kbd_led.dev))
2218 queue_work(asus->led_workqueue, &asus->kbd_led_work);
2223 static int asus_hotk_restore(struct device *device)
2225 struct asus_wmi *asus = dev_get_drvdata(device);
2228 /* Refresh both wlan rfkill state and pci hotplug */
2229 if (asus->wlan.rfkill)
2230 asus_rfkill_hotplug(asus);
2232 if (asus->bluetooth.rfkill) {
2233 bl = !asus_wmi_get_devstate_simple(asus,
2234 ASUS_WMI_DEVID_BLUETOOTH);
2235 rfkill_set_sw_state(asus->bluetooth.rfkill, bl);
2237 if (asus->wimax.rfkill) {
2238 bl = !asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WIMAX);
2239 rfkill_set_sw_state(asus->wimax.rfkill, bl);
2241 if (asus->wwan3g.rfkill) {
2242 bl = !asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WWAN3G);
2243 rfkill_set_sw_state(asus->wwan3g.rfkill, bl);
2245 if (asus->gps.rfkill) {
2246 bl = !asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_GPS);
2247 rfkill_set_sw_state(asus->gps.rfkill, bl);
2249 if (asus->uwb.rfkill) {
2250 bl = !asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_UWB);
2251 rfkill_set_sw_state(asus->uwb.rfkill, bl);
2253 if (!IS_ERR_OR_NULL(asus->kbd_led.dev))
2254 queue_work(asus->led_workqueue, &asus->kbd_led_work);
2259 static const struct dev_pm_ops asus_pm_ops = {
2260 .thaw = asus_hotk_thaw,
2261 .restore = asus_hotk_restore,
2262 .resume = asus_hotk_resume,
2265 static int asus_wmi_probe(struct platform_device *pdev)
2267 struct platform_driver *pdrv = to_platform_driver(pdev->dev.driver);
2268 struct asus_wmi_driver *wdrv = to_asus_wmi_driver(pdrv);
2271 if (!wmi_has_guid(ASUS_WMI_MGMT_GUID)) {
2272 pr_warn("Management GUID not found\n");
2276 if (wdrv->event_guid && !wmi_has_guid(wdrv->event_guid)) {
2277 pr_warn("Event GUID not found\n");
2282 ret = wdrv->probe(pdev);
2287 return asus_wmi_add(pdev);
2292 int __init_or_module asus_wmi_register_driver(struct asus_wmi_driver *driver)
2294 struct platform_driver *platform_driver;
2295 struct platform_device *platform_device;
2300 platform_driver = &driver->platform_driver;
2301 platform_driver->remove = asus_wmi_remove;
2302 platform_driver->driver.owner = driver->owner;
2303 platform_driver->driver.name = driver->name;
2304 platform_driver->driver.pm = &asus_pm_ops;
2306 platform_device = platform_create_bundle(platform_driver,
2309 if (IS_ERR(platform_device))
2310 return PTR_ERR(platform_device);
2315 EXPORT_SYMBOL_GPL(asus_wmi_register_driver);
2317 void asus_wmi_unregister_driver(struct asus_wmi_driver *driver)
2319 platform_device_unregister(driver->platform_device);
2320 platform_driver_unregister(&driver->platform_driver);
2323 EXPORT_SYMBOL_GPL(asus_wmi_unregister_driver);
2325 static int __init asus_wmi_init(void)
2327 if (!wmi_has_guid(ASUS_WMI_MGMT_GUID)) {
2328 pr_info("Asus Management GUID not found\n");
2332 pr_info("ASUS WMI generic driver loaded\n");
2336 static void __exit asus_wmi_exit(void)
2338 pr_info("ASUS WMI generic driver unloaded\n");
2341 module_init(asus_wmi_init);
2342 module_exit(asus_wmi_exit);