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_data/x86/asus-wmi.h>
47 #include <linux/platform_device.h>
48 #include <linux/thermal.h>
49 #include <linux/acpi.h>
50 #include <linux/dmi.h>
51 #include <acpi/video.h>
55 MODULE_AUTHOR("Corentin Chary <corentin.chary@gmail.com>, "
56 "Yong Wang <yong.y.wang@intel.com>");
57 MODULE_DESCRIPTION("Asus Generic WMI Driver");
58 MODULE_LICENSE("GPL");
60 #define to_asus_wmi_driver(pdrv) \
61 (container_of((pdrv), struct asus_wmi_driver, platform_driver))
63 #define ASUS_WMI_MGMT_GUID "97845ED0-4E6D-11DE-8A39-0800200C9A66"
65 #define NOTIFY_BRNUP_MIN 0x11
66 #define NOTIFY_BRNUP_MAX 0x1f
67 #define NOTIFY_BRNDOWN_MIN 0x20
68 #define NOTIFY_BRNDOWN_MAX 0x2e
69 #define NOTIFY_KBD_BRTUP 0xc4
70 #define NOTIFY_KBD_BRTDWN 0xc5
71 #define NOTIFY_KBD_BRTTOGGLE 0xc7
73 #define ASUS_FAN_DESC "cpu_fan"
74 #define ASUS_FAN_MFUN 0x13
75 #define ASUS_FAN_SFUN_READ 0x06
76 #define ASUS_FAN_SFUN_WRITE 0x07
77 #define ASUS_FAN_CTRL_MANUAL 1
78 #define ASUS_FAN_CTRL_AUTO 2
80 #define USB_INTEL_XUSB2PR 0xD0
81 #define PCI_DEVICE_ID_INTEL_LYNXPOINT_LP_XHCI 0x9c31
83 static const char * const ashs_ids[] = { "ATK4001", "ATK4002", NULL };
85 static bool ashs_present(void)
89 if (acpi_dev_found(ashs_ids[i++]))
101 * Struct that's used for all methods called via AGFN. Naming is
102 * identically to the AML code.
105 u16 mfun; /* probably "Multi-function" to be called */
106 u16 sfun; /* probably "Sub-function" to be called */
107 u16 len; /* size of the hole struct, including subfunction fields */
108 u8 stas; /* not used by now */
109 u8 err; /* zero on success */
112 /* struct used for calling fan read and write methods */
114 struct agfn_args agfn; /* common fields */
115 u8 fan; /* fan number: 0: set auto mode 1: 1st fan */
116 u32 speed; /* read: RPM/100 - write: 0-255 */
120 * <platform>/ - debugfs root directory
121 * dev_id - current dev_id
122 * ctrl_param - current ctrl_param
123 * method_id - current method_id
124 * devs - call DEVS(dev_id, ctrl_param) and print result
125 * dsts - call DSTS(dev_id) and print result
126 * call - call method_id(dev_id, ctrl_param) and print result
128 struct asus_wmi_debug {
136 struct asus_wmi *asus;
137 struct rfkill *rfkill;
146 struct input_dev *inputdev;
147 struct backlight_device *backlight_device;
148 struct platform_device *platform_device;
150 struct led_classdev wlan_led;
152 struct led_classdev tpd_led;
154 struct led_classdev kbd_led;
156 struct led_classdev lightbar_led;
158 struct workqueue_struct *led_workqueue;
159 struct work_struct tpd_led_work;
160 struct work_struct wlan_led_work;
161 struct work_struct lightbar_led_work;
163 struct asus_rfkill wlan;
164 struct asus_rfkill bluetooth;
165 struct asus_rfkill wimax;
166 struct asus_rfkill wwan3g;
167 struct asus_rfkill gps;
168 struct asus_rfkill uwb;
170 bool asus_hwmon_fan_manual_mode;
171 int asus_hwmon_num_fans;
174 struct hotplug_slot hotplug_slot;
175 struct mutex hotplug_lock;
176 struct mutex wmi_lock;
177 struct workqueue_struct *hotplug_workqueue;
178 struct work_struct hotplug_work;
180 struct asus_wmi_debug debug;
182 struct asus_wmi_driver *driver;
185 static int asus_wmi_input_init(struct asus_wmi *asus)
189 asus->inputdev = input_allocate_device();
193 asus->inputdev->name = asus->driver->input_name;
194 asus->inputdev->phys = asus->driver->input_phys;
195 asus->inputdev->id.bustype = BUS_HOST;
196 asus->inputdev->dev.parent = &asus->platform_device->dev;
197 set_bit(EV_REP, asus->inputdev->evbit);
199 err = sparse_keymap_setup(asus->inputdev, asus->driver->keymap, NULL);
203 err = input_register_device(asus->inputdev);
210 input_free_device(asus->inputdev);
214 static void asus_wmi_input_exit(struct asus_wmi *asus)
217 input_unregister_device(asus->inputdev);
219 asus->inputdev = NULL;
222 int asus_wmi_evaluate_method(u32 method_id, u32 arg0, u32 arg1, u32 *retval)
224 struct bios_args args = {
228 struct acpi_buffer input = { (acpi_size) sizeof(args), &args };
229 struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
231 union acpi_object *obj;
234 status = wmi_evaluate_method(ASUS_WMI_MGMT_GUID, 0, method_id,
237 if (ACPI_FAILURE(status))
240 obj = (union acpi_object *)output.pointer;
241 if (obj && obj->type == ACPI_TYPE_INTEGER)
242 tmp = (u32) obj->integer.value;
250 if (ACPI_FAILURE(status))
253 if (tmp == ASUS_WMI_UNSUPPORTED_METHOD)
258 EXPORT_SYMBOL_GPL(asus_wmi_evaluate_method);
260 static int asus_wmi_evaluate_method_agfn(const struct acpi_buffer args)
262 struct acpi_buffer input;
268 * Copy to dma capable address otherwise memory corruption occurs as
269 * bios has to be able to access it.
271 input.pointer = kzalloc(args.length, GFP_DMA | GFP_KERNEL);
272 input.length = args.length;
275 phys_addr = virt_to_phys(input.pointer);
276 memcpy(input.pointer, args.pointer, args.length);
278 status = asus_wmi_evaluate_method(ASUS_WMI_METHODID_AGFN,
279 phys_addr, 0, &retval);
281 memcpy(args.pointer, input.pointer, args.length);
283 kfree(input.pointer);
290 static int asus_wmi_get_devstate(struct asus_wmi *asus, u32 dev_id, u32 *retval)
292 return asus_wmi_evaluate_method(asus->dsts_id, dev_id, 0, retval);
295 static int asus_wmi_set_devstate(u32 dev_id, u32 ctrl_param,
298 return asus_wmi_evaluate_method(ASUS_WMI_METHODID_DEVS, dev_id,
302 /* Helper for special devices with magic return codes */
303 static int asus_wmi_get_devstate_bits(struct asus_wmi *asus,
304 u32 dev_id, u32 mask)
309 err = asus_wmi_get_devstate(asus, dev_id, &retval);
314 if (!(retval & ASUS_WMI_DSTS_PRESENCE_BIT))
317 if (mask == ASUS_WMI_DSTS_STATUS_BIT) {
318 if (retval & ASUS_WMI_DSTS_UNKNOWN_BIT)
322 return retval & mask;
325 static int asus_wmi_get_devstate_simple(struct asus_wmi *asus, u32 dev_id)
327 return asus_wmi_get_devstate_bits(asus, dev_id,
328 ASUS_WMI_DSTS_STATUS_BIT);
335 * These functions actually update the LED's, and are called from a
336 * workqueue. By doing this as separate work rather than when the LED
337 * subsystem asks, we avoid messing with the Asus ACPI stuff during a
338 * potentially bad time, such as a timer interrupt.
340 static void tpd_led_update(struct work_struct *work)
343 struct asus_wmi *asus;
345 asus = container_of(work, struct asus_wmi, tpd_led_work);
347 ctrl_param = asus->tpd_led_wk;
348 asus_wmi_set_devstate(ASUS_WMI_DEVID_TOUCHPAD_LED, ctrl_param, NULL);
351 static void tpd_led_set(struct led_classdev *led_cdev,
352 enum led_brightness value)
354 struct asus_wmi *asus;
356 asus = container_of(led_cdev, struct asus_wmi, tpd_led);
358 asus->tpd_led_wk = !!value;
359 queue_work(asus->led_workqueue, &asus->tpd_led_work);
362 static int read_tpd_led_state(struct asus_wmi *asus)
364 return asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_TOUCHPAD_LED);
367 static enum led_brightness tpd_led_get(struct led_classdev *led_cdev)
369 struct asus_wmi *asus;
371 asus = container_of(led_cdev, struct asus_wmi, tpd_led);
373 return read_tpd_led_state(asus);
376 static void kbd_led_update(struct asus_wmi *asus)
382 * bit 7: light on/off
384 if (asus->kbd_led_wk > 0)
385 ctrl_param = 0x80 | (asus->kbd_led_wk & 0x7F);
387 asus_wmi_set_devstate(ASUS_WMI_DEVID_KBD_BACKLIGHT, ctrl_param, NULL);
390 static int kbd_led_read(struct asus_wmi *asus, int *level, int *env)
396 * bit 7: light on/off
397 * bit 8-10: environment (0: dark, 1: normal, 2: light)
398 * bit 17: status unknown
400 retval = asus_wmi_get_devstate_bits(asus, ASUS_WMI_DEVID_KBD_BACKLIGHT,
403 /* Unknown status is considered as off */
404 if (retval == 0x8000)
409 *level = retval & 0x7F;
411 *env = (retval >> 8) & 0x7F;
418 static void do_kbd_led_set(struct led_classdev *led_cdev, int value)
420 struct asus_wmi *asus;
423 asus = container_of(led_cdev, struct asus_wmi, kbd_led);
424 max_level = asus->kbd_led.max_brightness;
426 if (value > max_level)
431 asus->kbd_led_wk = value;
432 kbd_led_update(asus);
435 static void kbd_led_set(struct led_classdev *led_cdev,
436 enum led_brightness value)
438 do_kbd_led_set(led_cdev, value);
441 static void kbd_led_set_by_kbd(struct asus_wmi *asus, enum led_brightness value)
443 struct led_classdev *led_cdev = &asus->kbd_led;
445 do_kbd_led_set(led_cdev, value);
446 led_classdev_notify_brightness_hw_changed(led_cdev, asus->kbd_led_wk);
449 static enum led_brightness kbd_led_get(struct led_classdev *led_cdev)
451 struct asus_wmi *asus;
454 asus = container_of(led_cdev, struct asus_wmi, kbd_led);
456 retval = kbd_led_read(asus, &value, NULL);
464 static int wlan_led_unknown_state(struct asus_wmi *asus)
468 asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_WIRELESS_LED, &result);
470 return result & ASUS_WMI_DSTS_UNKNOWN_BIT;
473 static int wlan_led_presence(struct asus_wmi *asus)
477 asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_WIRELESS_LED, &result);
479 return result & ASUS_WMI_DSTS_PRESENCE_BIT;
482 static void wlan_led_update(struct work_struct *work)
485 struct asus_wmi *asus;
487 asus = container_of(work, struct asus_wmi, wlan_led_work);
489 ctrl_param = asus->wlan_led_wk;
490 asus_wmi_set_devstate(ASUS_WMI_DEVID_WIRELESS_LED, ctrl_param, NULL);
493 static void wlan_led_set(struct led_classdev *led_cdev,
494 enum led_brightness value)
496 struct asus_wmi *asus;
498 asus = container_of(led_cdev, struct asus_wmi, wlan_led);
500 asus->wlan_led_wk = !!value;
501 queue_work(asus->led_workqueue, &asus->wlan_led_work);
504 static enum led_brightness wlan_led_get(struct led_classdev *led_cdev)
506 struct asus_wmi *asus;
509 asus = container_of(led_cdev, struct asus_wmi, wlan_led);
510 asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_WIRELESS_LED, &result);
512 return result & ASUS_WMI_DSTS_BRIGHTNESS_MASK;
515 static void lightbar_led_update(struct work_struct *work)
517 struct asus_wmi *asus;
520 asus = container_of(work, struct asus_wmi, lightbar_led_work);
522 ctrl_param = asus->lightbar_led_wk;
523 asus_wmi_set_devstate(ASUS_WMI_DEVID_LIGHTBAR, ctrl_param, NULL);
526 static void lightbar_led_set(struct led_classdev *led_cdev,
527 enum led_brightness value)
529 struct asus_wmi *asus;
531 asus = container_of(led_cdev, struct asus_wmi, lightbar_led);
533 asus->lightbar_led_wk = !!value;
534 queue_work(asus->led_workqueue, &asus->lightbar_led_work);
537 static enum led_brightness lightbar_led_get(struct led_classdev *led_cdev)
539 struct asus_wmi *asus;
542 asus = container_of(led_cdev, struct asus_wmi, lightbar_led);
543 asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_LIGHTBAR, &result);
545 return result & ASUS_WMI_DSTS_LIGHTBAR_MASK;
548 static int lightbar_led_presence(struct asus_wmi *asus)
552 asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_LIGHTBAR, &result);
554 return result & ASUS_WMI_DSTS_PRESENCE_BIT;
557 static void asus_wmi_led_exit(struct asus_wmi *asus)
559 if (!IS_ERR_OR_NULL(asus->kbd_led.dev))
560 led_classdev_unregister(&asus->kbd_led);
561 if (!IS_ERR_OR_NULL(asus->tpd_led.dev))
562 led_classdev_unregister(&asus->tpd_led);
563 if (!IS_ERR_OR_NULL(asus->wlan_led.dev))
564 led_classdev_unregister(&asus->wlan_led);
565 if (!IS_ERR_OR_NULL(asus->lightbar_led.dev))
566 led_classdev_unregister(&asus->lightbar_led);
567 if (asus->led_workqueue)
568 destroy_workqueue(asus->led_workqueue);
571 static int asus_wmi_led_init(struct asus_wmi *asus)
575 asus->led_workqueue = create_singlethread_workqueue("led_workqueue");
576 if (!asus->led_workqueue)
579 if (read_tpd_led_state(asus) >= 0) {
580 INIT_WORK(&asus->tpd_led_work, tpd_led_update);
582 asus->tpd_led.name = "asus::touchpad";
583 asus->tpd_led.brightness_set = tpd_led_set;
584 asus->tpd_led.brightness_get = tpd_led_get;
585 asus->tpd_led.max_brightness = 1;
587 rv = led_classdev_register(&asus->platform_device->dev,
593 led_val = kbd_led_read(asus, NULL, NULL);
595 asus->kbd_led_wk = led_val;
596 asus->kbd_led.name = "asus::kbd_backlight";
597 asus->kbd_led.flags = LED_BRIGHT_HW_CHANGED;
598 asus->kbd_led.brightness_set = kbd_led_set;
599 asus->kbd_led.brightness_get = kbd_led_get;
600 asus->kbd_led.max_brightness = 3;
602 rv = led_classdev_register(&asus->platform_device->dev,
608 if (wlan_led_presence(asus) && (asus->driver->quirks->wapf > 0)) {
609 INIT_WORK(&asus->wlan_led_work, wlan_led_update);
611 asus->wlan_led.name = "asus::wlan";
612 asus->wlan_led.brightness_set = wlan_led_set;
613 if (!wlan_led_unknown_state(asus))
614 asus->wlan_led.brightness_get = wlan_led_get;
615 asus->wlan_led.flags = LED_CORE_SUSPENDRESUME;
616 asus->wlan_led.max_brightness = 1;
617 asus->wlan_led.default_trigger = "asus-wlan";
619 rv = led_classdev_register(&asus->platform_device->dev,
625 if (lightbar_led_presence(asus)) {
626 INIT_WORK(&asus->lightbar_led_work, lightbar_led_update);
628 asus->lightbar_led.name = "asus::lightbar";
629 asus->lightbar_led.brightness_set = lightbar_led_set;
630 asus->lightbar_led.brightness_get = lightbar_led_get;
631 asus->lightbar_led.max_brightness = 1;
633 rv = led_classdev_register(&asus->platform_device->dev,
634 &asus->lightbar_led);
639 asus_wmi_led_exit(asus);
646 * PCI hotplug (for wlan rfkill)
648 static bool asus_wlan_rfkill_blocked(struct asus_wmi *asus)
650 int result = asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WLAN);
657 static void asus_rfkill_hotplug(struct asus_wmi *asus)
665 mutex_lock(&asus->wmi_lock);
666 blocked = asus_wlan_rfkill_blocked(asus);
667 mutex_unlock(&asus->wmi_lock);
669 mutex_lock(&asus->hotplug_lock);
670 pci_lock_rescan_remove();
672 if (asus->wlan.rfkill)
673 rfkill_set_sw_state(asus->wlan.rfkill, blocked);
675 if (asus->hotplug_slot.ops) {
676 bus = pci_find_bus(0, 1);
678 pr_warn("Unable to find PCI bus 1?\n");
682 if (pci_bus_read_config_dword(bus, 0, PCI_VENDOR_ID, &l)) {
683 pr_err("Unable to read PCI config space?\n");
686 absent = (l == 0xffffffff);
688 if (blocked != absent) {
689 pr_warn("BIOS says wireless lan is %s, "
690 "but the pci device is %s\n",
691 blocked ? "blocked" : "unblocked",
692 absent ? "absent" : "present");
693 pr_warn("skipped wireless hotplug as probably "
694 "inappropriate for this model\n");
699 dev = pci_get_slot(bus, 0);
701 /* Device already present */
705 dev = pci_scan_single_device(bus, 0);
707 pci_bus_assign_resources(bus);
708 pci_bus_add_device(dev);
711 dev = pci_get_slot(bus, 0);
713 pci_stop_and_remove_bus_device(dev);
720 pci_unlock_rescan_remove();
721 mutex_unlock(&asus->hotplug_lock);
724 static void asus_rfkill_notify(acpi_handle handle, u32 event, void *data)
726 struct asus_wmi *asus = data;
728 if (event != ACPI_NOTIFY_BUS_CHECK)
732 * We can't call directly asus_rfkill_hotplug because most
733 * of the time WMBC is still being executed and not reetrant.
734 * There is currently no way to tell ACPICA that we want this
735 * method to be serialized, we schedule a asus_rfkill_hotplug
736 * call later, in a safer context.
738 queue_work(asus->hotplug_workqueue, &asus->hotplug_work);
741 static int asus_register_rfkill_notifier(struct asus_wmi *asus, char *node)
746 status = acpi_get_handle(NULL, node, &handle);
748 if (ACPI_SUCCESS(status)) {
749 status = acpi_install_notify_handler(handle,
751 asus_rfkill_notify, asus);
752 if (ACPI_FAILURE(status))
753 pr_warn("Failed to register notify on %s\n", node);
760 static void asus_unregister_rfkill_notifier(struct asus_wmi *asus, char *node)
762 acpi_status status = AE_OK;
765 status = acpi_get_handle(NULL, node, &handle);
767 if (ACPI_SUCCESS(status)) {
768 status = acpi_remove_notify_handler(handle,
771 if (ACPI_FAILURE(status))
772 pr_err("Error removing rfkill notify handler %s\n",
777 static int asus_get_adapter_status(struct hotplug_slot *hotplug_slot,
780 struct asus_wmi *asus = container_of(hotplug_slot,
781 struct asus_wmi, hotplug_slot);
782 int result = asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WLAN);
791 static const struct hotplug_slot_ops asus_hotplug_slot_ops = {
792 .get_adapter_status = asus_get_adapter_status,
793 .get_power_status = asus_get_adapter_status,
796 static void asus_hotplug_work(struct work_struct *work)
798 struct asus_wmi *asus;
800 asus = container_of(work, struct asus_wmi, hotplug_work);
801 asus_rfkill_hotplug(asus);
804 static int asus_setup_pci_hotplug(struct asus_wmi *asus)
807 struct pci_bus *bus = pci_find_bus(0, 1);
810 pr_err("Unable to find wifi PCI bus\n");
814 asus->hotplug_workqueue =
815 create_singlethread_workqueue("hotplug_workqueue");
816 if (!asus->hotplug_workqueue)
817 goto error_workqueue;
819 INIT_WORK(&asus->hotplug_work, asus_hotplug_work);
821 asus->hotplug_slot.ops = &asus_hotplug_slot_ops;
823 ret = pci_hp_register(&asus->hotplug_slot, bus, 0, "asus-wifi");
825 pr_err("Unable to register hotplug slot - %d\n", ret);
832 asus->hotplug_slot.ops = NULL;
833 destroy_workqueue(asus->hotplug_workqueue);
841 static int asus_rfkill_set(void *data, bool blocked)
843 struct asus_rfkill *priv = data;
844 u32 ctrl_param = !blocked;
845 u32 dev_id = priv->dev_id;
848 * If the user bit is set, BIOS can't set and record the wlan status,
849 * it will report the value read from id ASUS_WMI_DEVID_WLAN_LED
850 * while we query the wlan status through WMI(ASUS_WMI_DEVID_WLAN).
851 * So, we have to record wlan status in id ASUS_WMI_DEVID_WLAN_LED
852 * while setting the wlan status through WMI.
853 * This is also the behavior that windows app will do.
855 if ((dev_id == ASUS_WMI_DEVID_WLAN) &&
856 priv->asus->driver->wlan_ctrl_by_user)
857 dev_id = ASUS_WMI_DEVID_WLAN_LED;
859 return asus_wmi_set_devstate(dev_id, ctrl_param, NULL);
862 static void asus_rfkill_query(struct rfkill *rfkill, void *data)
864 struct asus_rfkill *priv = data;
867 result = asus_wmi_get_devstate_simple(priv->asus, priv->dev_id);
872 rfkill_set_sw_state(priv->rfkill, !result);
875 static int asus_rfkill_wlan_set(void *data, bool blocked)
877 struct asus_rfkill *priv = data;
878 struct asus_wmi *asus = priv->asus;
882 * This handler is enabled only if hotplug is enabled.
883 * In this case, the asus_wmi_set_devstate() will
884 * trigger a wmi notification and we need to wait
885 * this call to finish before being able to call
888 mutex_lock(&asus->wmi_lock);
889 ret = asus_rfkill_set(data, blocked);
890 mutex_unlock(&asus->wmi_lock);
894 static const struct rfkill_ops asus_rfkill_wlan_ops = {
895 .set_block = asus_rfkill_wlan_set,
896 .query = asus_rfkill_query,
899 static const struct rfkill_ops asus_rfkill_ops = {
900 .set_block = asus_rfkill_set,
901 .query = asus_rfkill_query,
904 static int asus_new_rfkill(struct asus_wmi *asus,
905 struct asus_rfkill *arfkill,
906 const char *name, enum rfkill_type type, int dev_id)
908 int result = asus_wmi_get_devstate_simple(asus, dev_id);
909 struct rfkill **rfkill = &arfkill->rfkill;
914 arfkill->dev_id = dev_id;
915 arfkill->asus = asus;
917 if (dev_id == ASUS_WMI_DEVID_WLAN &&
918 asus->driver->quirks->hotplug_wireless)
919 *rfkill = rfkill_alloc(name, &asus->platform_device->dev, type,
920 &asus_rfkill_wlan_ops, arfkill);
922 *rfkill = rfkill_alloc(name, &asus->platform_device->dev, type,
923 &asus_rfkill_ops, arfkill);
928 if ((dev_id == ASUS_WMI_DEVID_WLAN) &&
929 (asus->driver->quirks->wapf > 0))
930 rfkill_set_led_trigger_name(*rfkill, "asus-wlan");
932 rfkill_init_sw_state(*rfkill, !result);
933 result = rfkill_register(*rfkill);
935 rfkill_destroy(*rfkill);
942 static void asus_wmi_rfkill_exit(struct asus_wmi *asus)
944 if (asus->driver->wlan_ctrl_by_user && ashs_present())
947 asus_unregister_rfkill_notifier(asus, "\\_SB.PCI0.P0P5");
948 asus_unregister_rfkill_notifier(asus, "\\_SB.PCI0.P0P6");
949 asus_unregister_rfkill_notifier(asus, "\\_SB.PCI0.P0P7");
950 if (asus->wlan.rfkill) {
951 rfkill_unregister(asus->wlan.rfkill);
952 rfkill_destroy(asus->wlan.rfkill);
953 asus->wlan.rfkill = NULL;
956 * Refresh pci hotplug in case the rfkill state was changed after
957 * asus_unregister_rfkill_notifier()
959 asus_rfkill_hotplug(asus);
960 if (asus->hotplug_slot.ops)
961 pci_hp_deregister(&asus->hotplug_slot);
962 if (asus->hotplug_workqueue)
963 destroy_workqueue(asus->hotplug_workqueue);
965 if (asus->bluetooth.rfkill) {
966 rfkill_unregister(asus->bluetooth.rfkill);
967 rfkill_destroy(asus->bluetooth.rfkill);
968 asus->bluetooth.rfkill = NULL;
970 if (asus->wimax.rfkill) {
971 rfkill_unregister(asus->wimax.rfkill);
972 rfkill_destroy(asus->wimax.rfkill);
973 asus->wimax.rfkill = NULL;
975 if (asus->wwan3g.rfkill) {
976 rfkill_unregister(asus->wwan3g.rfkill);
977 rfkill_destroy(asus->wwan3g.rfkill);
978 asus->wwan3g.rfkill = NULL;
980 if (asus->gps.rfkill) {
981 rfkill_unregister(asus->gps.rfkill);
982 rfkill_destroy(asus->gps.rfkill);
983 asus->gps.rfkill = NULL;
985 if (asus->uwb.rfkill) {
986 rfkill_unregister(asus->uwb.rfkill);
987 rfkill_destroy(asus->uwb.rfkill);
988 asus->uwb.rfkill = NULL;
992 static int asus_wmi_rfkill_init(struct asus_wmi *asus)
996 mutex_init(&asus->hotplug_lock);
997 mutex_init(&asus->wmi_lock);
999 result = asus_new_rfkill(asus, &asus->wlan, "asus-wlan",
1000 RFKILL_TYPE_WLAN, ASUS_WMI_DEVID_WLAN);
1002 if (result && result != -ENODEV)
1005 result = asus_new_rfkill(asus, &asus->bluetooth,
1006 "asus-bluetooth", RFKILL_TYPE_BLUETOOTH,
1007 ASUS_WMI_DEVID_BLUETOOTH);
1009 if (result && result != -ENODEV)
1012 result = asus_new_rfkill(asus, &asus->wimax, "asus-wimax",
1013 RFKILL_TYPE_WIMAX, ASUS_WMI_DEVID_WIMAX);
1015 if (result && result != -ENODEV)
1018 result = asus_new_rfkill(asus, &asus->wwan3g, "asus-wwan3g",
1019 RFKILL_TYPE_WWAN, ASUS_WMI_DEVID_WWAN3G);
1021 if (result && result != -ENODEV)
1024 result = asus_new_rfkill(asus, &asus->gps, "asus-gps",
1025 RFKILL_TYPE_GPS, ASUS_WMI_DEVID_GPS);
1027 if (result && result != -ENODEV)
1030 result = asus_new_rfkill(asus, &asus->uwb, "asus-uwb",
1031 RFKILL_TYPE_UWB, ASUS_WMI_DEVID_UWB);
1033 if (result && result != -ENODEV)
1036 if (!asus->driver->quirks->hotplug_wireless)
1039 result = asus_setup_pci_hotplug(asus);
1041 * If we get -EBUSY then something else is handling the PCI hotplug -
1042 * don't fail in this case
1044 if (result == -EBUSY)
1047 asus_register_rfkill_notifier(asus, "\\_SB.PCI0.P0P5");
1048 asus_register_rfkill_notifier(asus, "\\_SB.PCI0.P0P6");
1049 asus_register_rfkill_notifier(asus, "\\_SB.PCI0.P0P7");
1051 * Refresh pci hotplug in case the rfkill state was changed during
1054 asus_rfkill_hotplug(asus);
1057 if (result && result != -ENODEV)
1058 asus_wmi_rfkill_exit(asus);
1060 if (result == -ENODEV)
1066 static void asus_wmi_set_xusb2pr(struct asus_wmi *asus)
1068 struct pci_dev *xhci_pdev;
1069 u32 orig_ports_available;
1070 u32 ports_available = asus->driver->quirks->xusb2pr;
1072 xhci_pdev = pci_get_device(PCI_VENDOR_ID_INTEL,
1073 PCI_DEVICE_ID_INTEL_LYNXPOINT_LP_XHCI,
1079 pci_read_config_dword(xhci_pdev, USB_INTEL_XUSB2PR,
1080 &orig_ports_available);
1082 pci_write_config_dword(xhci_pdev, USB_INTEL_XUSB2PR,
1083 cpu_to_le32(ports_available));
1085 pr_info("set USB_INTEL_XUSB2PR old: 0x%04x, new: 0x%04x\n",
1086 orig_ports_available, ports_available);
1090 * Some devices dont support or have borcken get_als method
1091 * but still support set method.
1093 static void asus_wmi_set_als(void)
1095 asus_wmi_set_devstate(ASUS_WMI_DEVID_ALS_ENABLE, 1, NULL);
1101 static int asus_hwmon_agfn_fan_speed_read(struct asus_wmi *asus, int fan,
1104 struct fan_args args = {
1105 .agfn.len = sizeof(args),
1106 .agfn.mfun = ASUS_FAN_MFUN,
1107 .agfn.sfun = ASUS_FAN_SFUN_READ,
1111 struct acpi_buffer input = { (acpi_size) sizeof(args), &args };
1117 status = asus_wmi_evaluate_method_agfn(input);
1119 if (status || args.agfn.err)
1123 *speed = args.speed;
1128 static int asus_hwmon_agfn_fan_speed_write(struct asus_wmi *asus, int fan,
1131 struct fan_args args = {
1132 .agfn.len = sizeof(args),
1133 .agfn.mfun = ASUS_FAN_MFUN,
1134 .agfn.sfun = ASUS_FAN_SFUN_WRITE,
1136 .speed = speed ? *speed : 0,
1138 struct acpi_buffer input = { (acpi_size) sizeof(args), &args };
1141 /* 1: for setting 1st fan's speed 0: setting auto mode */
1142 if (fan != 1 && fan != 0)
1145 status = asus_wmi_evaluate_method_agfn(input);
1147 if (status || args.agfn.err)
1150 if (speed && fan == 1)
1151 asus->asus_hwmon_pwm = *speed;
1157 * Check if we can read the speed of one fan. If true we assume we can also
1160 static int asus_hwmon_get_fan_number(struct asus_wmi *asus, int *num_fans)
1167 status = asus_hwmon_agfn_fan_speed_read(asus, 1, &speed);
1174 static int asus_hwmon_fan_set_auto(struct asus_wmi *asus)
1178 status = asus_hwmon_agfn_fan_speed_write(asus, 0, NULL);
1182 asus->asus_hwmon_fan_manual_mode = false;
1187 static int asus_hwmon_fan_rpm_show(struct device *dev, int fan)
1189 struct asus_wmi *asus = dev_get_drvdata(dev);
1193 /* no speed readable on manual mode */
1194 if (asus->asus_hwmon_fan_manual_mode)
1197 ret = asus_hwmon_agfn_fan_speed_read(asus, fan+1, &value);
1199 pr_warn("reading fan speed failed: %d\n", ret);
1206 static void asus_hwmon_pwm_show(struct asus_wmi *asus, int fan, int *value)
1210 if (asus->asus_hwmon_pwm >= 0) {
1211 *value = asus->asus_hwmon_pwm;
1215 err = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_FAN_CTRL, value);
1221 if (*value == 1) /* Low Speed */
1223 else if (*value == 2)
1225 else if (*value == 3)
1228 pr_err("Unknown fan speed %#x\n", *value);
1233 static ssize_t pwm1_show(struct device *dev,
1234 struct device_attribute *attr,
1237 struct asus_wmi *asus = dev_get_drvdata(dev);
1240 asus_hwmon_pwm_show(asus, 0, &value);
1242 return sprintf(buf, "%d\n", value);
1245 static ssize_t pwm1_store(struct device *dev,
1246 struct device_attribute *attr,
1247 const char *buf, size_t count) {
1248 struct asus_wmi *asus = dev_get_drvdata(dev);
1253 ret = kstrtouint(buf, 10, &value);
1258 value = clamp(value, 0, 255);
1260 state = asus_hwmon_agfn_fan_speed_write(asus, 1, &value);
1262 pr_warn("Setting fan speed failed: %d\n", state);
1264 asus->asus_hwmon_fan_manual_mode = true;
1269 static ssize_t fan1_input_show(struct device *dev,
1270 struct device_attribute *attr,
1273 int value = asus_hwmon_fan_rpm_show(dev, 0);
1275 return sprintf(buf, "%d\n", value < 0 ? -1 : value*100);
1279 static ssize_t pwm1_enable_show(struct device *dev,
1280 struct device_attribute *attr,
1283 struct asus_wmi *asus = dev_get_drvdata(dev);
1285 if (asus->asus_hwmon_fan_manual_mode)
1286 return sprintf(buf, "%d\n", ASUS_FAN_CTRL_MANUAL);
1288 return sprintf(buf, "%d\n", ASUS_FAN_CTRL_AUTO);
1291 static ssize_t pwm1_enable_store(struct device *dev,
1292 struct device_attribute *attr,
1293 const char *buf, size_t count)
1295 struct asus_wmi *asus = dev_get_drvdata(dev);
1300 ret = kstrtouint(buf, 10, &state);
1305 if (state == ASUS_FAN_CTRL_MANUAL)
1306 asus->asus_hwmon_fan_manual_mode = true;
1308 status = asus_hwmon_fan_set_auto(asus);
1316 static ssize_t fan1_label_show(struct device *dev,
1317 struct device_attribute *attr,
1320 return sprintf(buf, "%s\n", ASUS_FAN_DESC);
1323 static ssize_t asus_hwmon_temp1(struct device *dev,
1324 struct device_attribute *attr,
1327 struct asus_wmi *asus = dev_get_drvdata(dev);
1331 err = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_THERMAL_CTRL, &value);
1336 value = DECI_KELVIN_TO_CELSIUS((value & 0xFFFF)) * 1000;
1338 return sprintf(buf, "%d\n", value);
1342 static DEVICE_ATTR_RW(pwm1);
1343 static DEVICE_ATTR_RW(pwm1_enable);
1344 static DEVICE_ATTR_RO(fan1_input);
1345 static DEVICE_ATTR_RO(fan1_label);
1348 static DEVICE_ATTR(temp1_input, S_IRUGO, asus_hwmon_temp1, NULL);
1350 static struct attribute *hwmon_attributes[] = {
1351 &dev_attr_pwm1.attr,
1352 &dev_attr_pwm1_enable.attr,
1353 &dev_attr_fan1_input.attr,
1354 &dev_attr_fan1_label.attr,
1356 &dev_attr_temp1_input.attr,
1360 static umode_t asus_hwmon_sysfs_is_visible(struct kobject *kobj,
1361 struct attribute *attr, int idx)
1363 struct device *dev = container_of(kobj, struct device, kobj);
1364 struct platform_device *pdev = to_platform_device(dev->parent);
1365 struct asus_wmi *asus = platform_get_drvdata(pdev);
1368 u32 value = ASUS_WMI_UNSUPPORTED_METHOD;
1371 if (attr == &dev_attr_pwm1.attr)
1372 dev_id = ASUS_WMI_DEVID_FAN_CTRL;
1373 else if (attr == &dev_attr_temp1_input.attr)
1374 dev_id = ASUS_WMI_DEVID_THERMAL_CTRL;
1377 if (attr == &dev_attr_fan1_input.attr
1378 || attr == &dev_attr_fan1_label.attr
1379 || attr == &dev_attr_pwm1.attr
1380 || attr == &dev_attr_pwm1_enable.attr) {
1385 int err = asus_wmi_get_devstate(asus, dev_id, &value);
1387 if (err < 0 && fan_attr == -1)
1388 return 0; /* can't return negative here */
1391 if (dev_id == ASUS_WMI_DEVID_FAN_CTRL) {
1393 * We need to find a better way, probably using sfun,
1395 * Currently we disable it if:
1396 * - ASUS_WMI_UNSUPPORTED_METHOD is returned
1397 * - reverved bits are non-zero
1398 * - sfun and presence bit are not set
1400 if (value == ASUS_WMI_UNSUPPORTED_METHOD || value & 0xFFF80000
1401 || (!asus->sfun && !(value & ASUS_WMI_DSTS_PRESENCE_BIT)))
1404 ok = fan_attr <= asus->asus_hwmon_num_fans;
1405 } else if (dev_id == ASUS_WMI_DEVID_THERMAL_CTRL) {
1406 /* If value is zero, something is clearly wrong */
1409 } else if (fan_attr <= asus->asus_hwmon_num_fans && fan_attr != -1) {
1415 return ok ? attr->mode : 0;
1418 static const struct attribute_group hwmon_attribute_group = {
1419 .is_visible = asus_hwmon_sysfs_is_visible,
1420 .attrs = hwmon_attributes
1422 __ATTRIBUTE_GROUPS(hwmon_attribute);
1424 static int asus_wmi_hwmon_init(struct asus_wmi *asus)
1426 struct device *hwmon;
1428 hwmon = hwmon_device_register_with_groups(&asus->platform_device->dev,
1430 hwmon_attribute_groups);
1431 if (IS_ERR(hwmon)) {
1432 pr_err("Could not register asus hwmon device\n");
1433 return PTR_ERR(hwmon);
1441 static int read_backlight_power(struct asus_wmi *asus)
1444 if (asus->driver->quirks->store_backlight_power)
1445 ret = !asus->driver->panel_power;
1447 ret = asus_wmi_get_devstate_simple(asus,
1448 ASUS_WMI_DEVID_BACKLIGHT);
1453 return ret ? FB_BLANK_UNBLANK : FB_BLANK_POWERDOWN;
1456 static int read_brightness_max(struct asus_wmi *asus)
1461 err = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_BRIGHTNESS, &retval);
1466 retval = retval & ASUS_WMI_DSTS_MAX_BRIGTH_MASK;
1475 static int read_brightness(struct backlight_device *bd)
1477 struct asus_wmi *asus = bl_get_data(bd);
1481 err = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_BRIGHTNESS, &retval);
1486 return retval & ASUS_WMI_DSTS_BRIGHTNESS_MASK;
1489 static u32 get_scalar_command(struct backlight_device *bd)
1491 struct asus_wmi *asus = bl_get_data(bd);
1494 if ((asus->driver->brightness < bd->props.brightness) ||
1495 bd->props.brightness == bd->props.max_brightness)
1496 ctrl_param = 0x00008001;
1497 else if ((asus->driver->brightness > bd->props.brightness) ||
1498 bd->props.brightness == 0)
1499 ctrl_param = 0x00008000;
1501 asus->driver->brightness = bd->props.brightness;
1506 static int update_bl_status(struct backlight_device *bd)
1508 struct asus_wmi *asus = bl_get_data(bd);
1512 power = read_backlight_power(asus);
1513 if (power != -ENODEV && bd->props.power != power) {
1514 ctrl_param = !!(bd->props.power == FB_BLANK_UNBLANK);
1515 err = asus_wmi_set_devstate(ASUS_WMI_DEVID_BACKLIGHT,
1517 if (asus->driver->quirks->store_backlight_power)
1518 asus->driver->panel_power = bd->props.power;
1520 /* When using scalar brightness, updating the brightness
1521 * will mess with the backlight power */
1522 if (asus->driver->quirks->scalar_panel_brightness)
1526 if (asus->driver->quirks->scalar_panel_brightness)
1527 ctrl_param = get_scalar_command(bd);
1529 ctrl_param = bd->props.brightness;
1531 err = asus_wmi_set_devstate(ASUS_WMI_DEVID_BRIGHTNESS,
1537 static const struct backlight_ops asus_wmi_bl_ops = {
1538 .get_brightness = read_brightness,
1539 .update_status = update_bl_status,
1542 static int asus_wmi_backlight_notify(struct asus_wmi *asus, int code)
1544 struct backlight_device *bd = asus->backlight_device;
1545 int old = bd->props.brightness;
1548 if (code >= NOTIFY_BRNUP_MIN && code <= NOTIFY_BRNUP_MAX)
1549 new = code - NOTIFY_BRNUP_MIN + 1;
1550 else if (code >= NOTIFY_BRNDOWN_MIN && code <= NOTIFY_BRNDOWN_MAX)
1551 new = code - NOTIFY_BRNDOWN_MIN;
1553 bd->props.brightness = new;
1554 backlight_update_status(bd);
1555 backlight_force_update(bd, BACKLIGHT_UPDATE_HOTKEY);
1560 static int asus_wmi_backlight_init(struct asus_wmi *asus)
1562 struct backlight_device *bd;
1563 struct backlight_properties props;
1567 max = read_brightness_max(asus);
1571 power = read_backlight_power(asus);
1573 if (power == -ENODEV)
1574 power = FB_BLANK_UNBLANK;
1578 memset(&props, 0, sizeof(struct backlight_properties));
1579 props.type = BACKLIGHT_PLATFORM;
1580 props.max_brightness = max;
1581 bd = backlight_device_register(asus->driver->name,
1582 &asus->platform_device->dev, asus,
1583 &asus_wmi_bl_ops, &props);
1585 pr_err("Could not register backlight device\n");
1589 asus->backlight_device = bd;
1591 if (asus->driver->quirks->store_backlight_power)
1592 asus->driver->panel_power = power;
1594 bd->props.brightness = read_brightness(bd);
1595 bd->props.power = power;
1596 backlight_update_status(bd);
1598 asus->driver->brightness = bd->props.brightness;
1603 static void asus_wmi_backlight_exit(struct asus_wmi *asus)
1605 backlight_device_unregister(asus->backlight_device);
1607 asus->backlight_device = NULL;
1610 static int is_display_toggle(int code)
1612 /* display toggle keys */
1613 if ((code >= 0x61 && code <= 0x67) ||
1614 (code >= 0x8c && code <= 0x93) ||
1615 (code >= 0xa0 && code <= 0xa7) ||
1616 (code >= 0xd0 && code <= 0xd5))
1622 static void asus_wmi_notify(u32 value, void *context)
1624 struct asus_wmi *asus = context;
1625 struct acpi_buffer response = { ACPI_ALLOCATE_BUFFER, NULL };
1626 union acpi_object *obj;
1630 unsigned int key_value = 1;
1631 bool autorelease = 1;
1633 status = wmi_get_event_data(value, &response);
1634 if (status != AE_OK) {
1635 pr_err("bad event status 0x%x\n", status);
1639 obj = (union acpi_object *)response.pointer;
1641 if (!obj || obj->type != ACPI_TYPE_INTEGER)
1644 code = obj->integer.value;
1647 if (asus->driver->key_filter) {
1648 asus->driver->key_filter(asus->driver, &code, &key_value,
1650 if (code == ASUS_WMI_KEY_IGNORE)
1654 if (code >= NOTIFY_BRNUP_MIN && code <= NOTIFY_BRNUP_MAX)
1655 code = ASUS_WMI_BRN_UP;
1656 else if (code >= NOTIFY_BRNDOWN_MIN &&
1657 code <= NOTIFY_BRNDOWN_MAX)
1658 code = ASUS_WMI_BRN_DOWN;
1660 if (code == ASUS_WMI_BRN_DOWN || code == ASUS_WMI_BRN_UP) {
1661 if (acpi_video_get_backlight_type() == acpi_backlight_vendor) {
1662 asus_wmi_backlight_notify(asus, orig_code);
1667 if (code == NOTIFY_KBD_BRTUP) {
1668 kbd_led_set_by_kbd(asus, asus->kbd_led_wk + 1);
1671 if (code == NOTIFY_KBD_BRTDWN) {
1672 kbd_led_set_by_kbd(asus, asus->kbd_led_wk - 1);
1675 if (code == NOTIFY_KBD_BRTTOGGLE) {
1676 if (asus->kbd_led_wk == asus->kbd_led.max_brightness)
1677 kbd_led_set_by_kbd(asus, 0);
1679 kbd_led_set_by_kbd(asus, asus->kbd_led_wk + 1);
1683 if (is_display_toggle(code) &&
1684 asus->driver->quirks->no_display_toggle)
1687 if (!sparse_keymap_report_event(asus->inputdev, code,
1688 key_value, autorelease))
1689 pr_info("Unknown key %x pressed\n", code);
1698 static int parse_arg(const char *buf, unsigned long count, int *val)
1702 if (sscanf(buf, "%i", val) != 1)
1707 static ssize_t store_sys_wmi(struct asus_wmi *asus, int devid,
1708 const char *buf, size_t count)
1713 value = asus_wmi_get_devstate_simple(asus, devid);
1717 rv = parse_arg(buf, count, &value);
1718 err = asus_wmi_set_devstate(devid, value, &retval);
1726 static ssize_t show_sys_wmi(struct asus_wmi *asus, int devid, char *buf)
1728 int value = asus_wmi_get_devstate_simple(asus, devid);
1733 return sprintf(buf, "%d\n", value);
1736 #define ASUS_WMI_CREATE_DEVICE_ATTR(_name, _mode, _cm) \
1737 static ssize_t show_##_name(struct device *dev, \
1738 struct device_attribute *attr, \
1741 struct asus_wmi *asus = dev_get_drvdata(dev); \
1743 return show_sys_wmi(asus, _cm, buf); \
1745 static ssize_t store_##_name(struct device *dev, \
1746 struct device_attribute *attr, \
1747 const char *buf, size_t count) \
1749 struct asus_wmi *asus = dev_get_drvdata(dev); \
1751 return store_sys_wmi(asus, _cm, buf, count); \
1753 static struct device_attribute dev_attr_##_name = { \
1755 .name = __stringify(_name), \
1757 .show = show_##_name, \
1758 .store = store_##_name, \
1761 ASUS_WMI_CREATE_DEVICE_ATTR(touchpad, 0644, ASUS_WMI_DEVID_TOUCHPAD);
1762 ASUS_WMI_CREATE_DEVICE_ATTR(camera, 0644, ASUS_WMI_DEVID_CAMERA);
1763 ASUS_WMI_CREATE_DEVICE_ATTR(cardr, 0644, ASUS_WMI_DEVID_CARDREADER);
1764 ASUS_WMI_CREATE_DEVICE_ATTR(lid_resume, 0644, ASUS_WMI_DEVID_LID_RESUME);
1765 ASUS_WMI_CREATE_DEVICE_ATTR(als_enable, 0644, ASUS_WMI_DEVID_ALS_ENABLE);
1767 static ssize_t cpufv_store(struct device *dev, struct device_attribute *attr,
1768 const char *buf, size_t count)
1772 if (!count || sscanf(buf, "%i", &value) != 1)
1774 if (value < 0 || value > 2)
1777 rv = asus_wmi_evaluate_method(ASUS_WMI_METHODID_CFVS, value, 0, NULL);
1784 static DEVICE_ATTR_WO(cpufv);
1786 static struct attribute *platform_attributes[] = {
1787 &dev_attr_cpufv.attr,
1788 &dev_attr_camera.attr,
1789 &dev_attr_cardr.attr,
1790 &dev_attr_touchpad.attr,
1791 &dev_attr_lid_resume.attr,
1792 &dev_attr_als_enable.attr,
1796 static umode_t asus_sysfs_is_visible(struct kobject *kobj,
1797 struct attribute *attr, int idx)
1799 struct device *dev = container_of(kobj, struct device, kobj);
1800 struct asus_wmi *asus = dev_get_drvdata(dev);
1804 if (attr == &dev_attr_camera.attr)
1805 devid = ASUS_WMI_DEVID_CAMERA;
1806 else if (attr == &dev_attr_cardr.attr)
1807 devid = ASUS_WMI_DEVID_CARDREADER;
1808 else if (attr == &dev_attr_touchpad.attr)
1809 devid = ASUS_WMI_DEVID_TOUCHPAD;
1810 else if (attr == &dev_attr_lid_resume.attr)
1811 devid = ASUS_WMI_DEVID_LID_RESUME;
1812 else if (attr == &dev_attr_als_enable.attr)
1813 devid = ASUS_WMI_DEVID_ALS_ENABLE;
1816 ok = !(asus_wmi_get_devstate_simple(asus, devid) < 0);
1818 return ok ? attr->mode : 0;
1821 static const struct attribute_group platform_attribute_group = {
1822 .is_visible = asus_sysfs_is_visible,
1823 .attrs = platform_attributes
1826 static void asus_wmi_sysfs_exit(struct platform_device *device)
1828 sysfs_remove_group(&device->dev.kobj, &platform_attribute_group);
1831 static int asus_wmi_sysfs_init(struct platform_device *device)
1833 return sysfs_create_group(&device->dev.kobj, &platform_attribute_group);
1839 static int asus_wmi_platform_init(struct asus_wmi *asus)
1843 /* INIT enable hotkeys on some models */
1844 if (!asus_wmi_evaluate_method(ASUS_WMI_METHODID_INIT, 0, 0, &rv))
1845 pr_info("Initialization: %#x\n", rv);
1847 /* We don't know yet what to do with this version... */
1848 if (!asus_wmi_evaluate_method(ASUS_WMI_METHODID_SPEC, 0, 0x9, &rv)) {
1849 pr_info("BIOS WMI version: %d.%d\n", rv >> 16, rv & 0xFF);
1854 * The SFUN method probably allows the original driver to get the list
1855 * of features supported by a given model. For now, 0x0100 or 0x0800
1856 * bit signifies that the laptop is equipped with a Wi-Fi MiniPCI card.
1857 * The significance of others is yet to be found.
1859 if (!asus_wmi_evaluate_method(ASUS_WMI_METHODID_SFUN, 0, 0, &rv)) {
1860 pr_info("SFUN value: %#x\n", rv);
1865 * Eee PC and Notebooks seems to have different method_id for DSTS,
1866 * but it may also be related to the BIOS's SPEC.
1867 * Note, on most Eeepc, there is no way to check if a method exist
1868 * or note, while on notebooks, they returns 0xFFFFFFFE on failure,
1869 * but once again, SPEC may probably be used for that kind of things.
1871 if (!asus_wmi_evaluate_method(ASUS_WMI_METHODID_DSTS, 0, 0, NULL))
1872 asus->dsts_id = ASUS_WMI_METHODID_DSTS;
1874 asus->dsts_id = ASUS_WMI_METHODID_DSTS2;
1876 /* CWAP allow to define the behavior of the Fn+F2 key,
1877 * this method doesn't seems to be present on Eee PCs */
1878 if (asus->driver->quirks->wapf >= 0)
1879 asus_wmi_set_devstate(ASUS_WMI_DEVID_CWAP,
1880 asus->driver->quirks->wapf, NULL);
1882 return asus_wmi_sysfs_init(asus->platform_device);
1885 static void asus_wmi_platform_exit(struct asus_wmi *asus)
1887 asus_wmi_sysfs_exit(asus->platform_device);
1893 struct asus_wmi_debugfs_node {
1894 struct asus_wmi *asus;
1896 int (*show) (struct seq_file *m, void *data);
1899 static int show_dsts(struct seq_file *m, void *data)
1901 struct asus_wmi *asus = m->private;
1905 err = asus_wmi_get_devstate(asus, asus->debug.dev_id, &retval);
1910 seq_printf(m, "DSTS(%#x) = %#x\n", asus->debug.dev_id, retval);
1915 static int show_devs(struct seq_file *m, void *data)
1917 struct asus_wmi *asus = m->private;
1921 err = asus_wmi_set_devstate(asus->debug.dev_id, asus->debug.ctrl_param,
1927 seq_printf(m, "DEVS(%#x, %#x) = %#x\n", asus->debug.dev_id,
1928 asus->debug.ctrl_param, retval);
1933 static int show_call(struct seq_file *m, void *data)
1935 struct asus_wmi *asus = m->private;
1936 struct bios_args args = {
1937 .arg0 = asus->debug.dev_id,
1938 .arg1 = asus->debug.ctrl_param,
1940 struct acpi_buffer input = { (acpi_size) sizeof(args), &args };
1941 struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
1942 union acpi_object *obj;
1945 status = wmi_evaluate_method(ASUS_WMI_MGMT_GUID,
1946 0, asus->debug.method_id,
1949 if (ACPI_FAILURE(status))
1952 obj = (union acpi_object *)output.pointer;
1953 if (obj && obj->type == ACPI_TYPE_INTEGER)
1954 seq_printf(m, "%#x(%#x, %#x) = %#x\n", asus->debug.method_id,
1955 asus->debug.dev_id, asus->debug.ctrl_param,
1956 (u32) obj->integer.value);
1958 seq_printf(m, "%#x(%#x, %#x) = t:%d\n", asus->debug.method_id,
1959 asus->debug.dev_id, asus->debug.ctrl_param,
1960 obj ? obj->type : -1);
1967 static struct asus_wmi_debugfs_node asus_wmi_debug_files[] = {
1968 {NULL, "devs", show_devs},
1969 {NULL, "dsts", show_dsts},
1970 {NULL, "call", show_call},
1973 static int asus_wmi_debugfs_open(struct inode *inode, struct file *file)
1975 struct asus_wmi_debugfs_node *node = inode->i_private;
1977 return single_open(file, node->show, node->asus);
1980 static const struct file_operations asus_wmi_debugfs_io_ops = {
1981 .owner = THIS_MODULE,
1982 .open = asus_wmi_debugfs_open,
1984 .llseek = seq_lseek,
1985 .release = single_release,
1988 static void asus_wmi_debugfs_exit(struct asus_wmi *asus)
1990 debugfs_remove_recursive(asus->debug.root);
1993 static int asus_wmi_debugfs_init(struct asus_wmi *asus)
1995 struct dentry *dent;
1998 asus->debug.root = debugfs_create_dir(asus->driver->name, NULL);
1999 if (!asus->debug.root) {
2000 pr_err("failed to create debugfs directory\n");
2004 dent = debugfs_create_x32("method_id", S_IRUGO | S_IWUSR,
2005 asus->debug.root, &asus->debug.method_id);
2009 dent = debugfs_create_x32("dev_id", S_IRUGO | S_IWUSR,
2010 asus->debug.root, &asus->debug.dev_id);
2014 dent = debugfs_create_x32("ctrl_param", S_IRUGO | S_IWUSR,
2015 asus->debug.root, &asus->debug.ctrl_param);
2019 for (i = 0; i < ARRAY_SIZE(asus_wmi_debug_files); i++) {
2020 struct asus_wmi_debugfs_node *node = &asus_wmi_debug_files[i];
2023 dent = debugfs_create_file(node->name, S_IFREG | S_IRUGO,
2024 asus->debug.root, node,
2025 &asus_wmi_debugfs_io_ops);
2027 pr_err("failed to create debug file: %s\n", node->name);
2035 asus_wmi_debugfs_exit(asus);
2039 static int asus_wmi_fan_init(struct asus_wmi *asus)
2043 asus->asus_hwmon_pwm = -1;
2044 asus->asus_hwmon_num_fans = -1;
2045 asus->asus_hwmon_fan_manual_mode = false;
2047 status = asus_hwmon_get_fan_number(asus, &asus->asus_hwmon_num_fans);
2049 asus->asus_hwmon_num_fans = 0;
2050 pr_warn("Could not determine number of fans: %d\n", status);
2054 pr_info("Number of fans: %d\n", asus->asus_hwmon_num_fans);
2061 static int asus_wmi_add(struct platform_device *pdev)
2063 struct platform_driver *pdrv = to_platform_driver(pdev->dev.driver);
2064 struct asus_wmi_driver *wdrv = to_asus_wmi_driver(pdrv);
2065 struct asus_wmi *asus;
2066 const char *chassis_type;
2071 asus = kzalloc(sizeof(struct asus_wmi), GFP_KERNEL);
2075 asus->driver = wdrv;
2076 asus->platform_device = pdev;
2077 wdrv->platform_device = pdev;
2078 platform_set_drvdata(asus->platform_device, asus);
2080 if (wdrv->detect_quirks)
2081 wdrv->detect_quirks(asus->driver);
2083 err = asus_wmi_platform_init(asus);
2087 err = asus_wmi_input_init(asus);
2091 err = asus_wmi_fan_init(asus); /* probably no problems on error */
2092 asus_hwmon_fan_set_auto(asus);
2094 err = asus_wmi_hwmon_init(asus);
2098 err = asus_wmi_led_init(asus);
2102 asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_WLAN, &result);
2103 if (result & (ASUS_WMI_DSTS_PRESENCE_BIT | ASUS_WMI_DSTS_USER_BIT))
2104 asus->driver->wlan_ctrl_by_user = 1;
2106 if (!(asus->driver->wlan_ctrl_by_user && ashs_present())) {
2107 err = asus_wmi_rfkill_init(asus);
2112 if (asus->driver->quirks->wmi_force_als_set)
2115 /* Some Asus desktop boards export an acpi-video backlight interface,
2116 stop this from showing up */
2117 chassis_type = dmi_get_system_info(DMI_CHASSIS_TYPE);
2118 if (chassis_type && !strcmp(chassis_type, "3"))
2119 acpi_video_set_dmi_backlight_type(acpi_backlight_vendor);
2121 if (asus->driver->quirks->wmi_backlight_power)
2122 acpi_video_set_dmi_backlight_type(acpi_backlight_vendor);
2124 if (asus->driver->quirks->wmi_backlight_native)
2125 acpi_video_set_dmi_backlight_type(acpi_backlight_native);
2127 if (asus->driver->quirks->xusb2pr)
2128 asus_wmi_set_xusb2pr(asus);
2130 if (acpi_video_get_backlight_type() == acpi_backlight_vendor) {
2131 err = asus_wmi_backlight_init(asus);
2132 if (err && err != -ENODEV)
2133 goto fail_backlight;
2136 status = wmi_install_notify_handler(asus->driver->event_guid,
2137 asus_wmi_notify, asus);
2138 if (ACPI_FAILURE(status)) {
2139 pr_err("Unable to register notify handler - %d\n", status);
2141 goto fail_wmi_handler;
2144 err = asus_wmi_debugfs_init(asus);
2151 wmi_remove_notify_handler(asus->driver->event_guid);
2153 asus_wmi_backlight_exit(asus);
2155 asus_wmi_rfkill_exit(asus);
2157 asus_wmi_led_exit(asus);
2160 asus_wmi_input_exit(asus);
2162 asus_wmi_platform_exit(asus);
2168 static int asus_wmi_remove(struct platform_device *device)
2170 struct asus_wmi *asus;
2172 asus = platform_get_drvdata(device);
2173 wmi_remove_notify_handler(asus->driver->event_guid);
2174 asus_wmi_backlight_exit(asus);
2175 asus_wmi_input_exit(asus);
2176 asus_wmi_led_exit(asus);
2177 asus_wmi_rfkill_exit(asus);
2178 asus_wmi_debugfs_exit(asus);
2179 asus_wmi_platform_exit(asus);
2180 asus_hwmon_fan_set_auto(asus);
2187 * Platform driver - hibernate/resume callbacks
2189 static int asus_hotk_thaw(struct device *device)
2191 struct asus_wmi *asus = dev_get_drvdata(device);
2193 if (asus->wlan.rfkill) {
2197 * Work around bios bug - acpi _PTS turns off the wireless led
2198 * during suspend. Normally it restores it on resume, but
2199 * we should kick it ourselves in case hibernation is aborted.
2201 wlan = asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WLAN);
2202 asus_wmi_set_devstate(ASUS_WMI_DEVID_WLAN, wlan, NULL);
2208 static int asus_hotk_resume(struct device *device)
2210 struct asus_wmi *asus = dev_get_drvdata(device);
2212 if (!IS_ERR_OR_NULL(asus->kbd_led.dev))
2213 kbd_led_update(asus);
2218 static int asus_hotk_restore(struct device *device)
2220 struct asus_wmi *asus = dev_get_drvdata(device);
2223 /* Refresh both wlan rfkill state and pci hotplug */
2224 if (asus->wlan.rfkill)
2225 asus_rfkill_hotplug(asus);
2227 if (asus->bluetooth.rfkill) {
2228 bl = !asus_wmi_get_devstate_simple(asus,
2229 ASUS_WMI_DEVID_BLUETOOTH);
2230 rfkill_set_sw_state(asus->bluetooth.rfkill, bl);
2232 if (asus->wimax.rfkill) {
2233 bl = !asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WIMAX);
2234 rfkill_set_sw_state(asus->wimax.rfkill, bl);
2236 if (asus->wwan3g.rfkill) {
2237 bl = !asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WWAN3G);
2238 rfkill_set_sw_state(asus->wwan3g.rfkill, bl);
2240 if (asus->gps.rfkill) {
2241 bl = !asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_GPS);
2242 rfkill_set_sw_state(asus->gps.rfkill, bl);
2244 if (asus->uwb.rfkill) {
2245 bl = !asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_UWB);
2246 rfkill_set_sw_state(asus->uwb.rfkill, bl);
2248 if (!IS_ERR_OR_NULL(asus->kbd_led.dev))
2249 kbd_led_update(asus);
2254 static const struct dev_pm_ops asus_pm_ops = {
2255 .thaw = asus_hotk_thaw,
2256 .restore = asus_hotk_restore,
2257 .resume = asus_hotk_resume,
2260 static int asus_wmi_probe(struct platform_device *pdev)
2262 struct platform_driver *pdrv = to_platform_driver(pdev->dev.driver);
2263 struct asus_wmi_driver *wdrv = to_asus_wmi_driver(pdrv);
2266 if (!wmi_has_guid(ASUS_WMI_MGMT_GUID)) {
2267 pr_warn("Management GUID not found\n");
2271 if (wdrv->event_guid && !wmi_has_guid(wdrv->event_guid)) {
2272 pr_warn("Event GUID not found\n");
2277 ret = wdrv->probe(pdev);
2282 return asus_wmi_add(pdev);
2287 int __init_or_module asus_wmi_register_driver(struct asus_wmi_driver *driver)
2289 struct platform_driver *platform_driver;
2290 struct platform_device *platform_device;
2295 platform_driver = &driver->platform_driver;
2296 platform_driver->remove = asus_wmi_remove;
2297 platform_driver->driver.owner = driver->owner;
2298 platform_driver->driver.name = driver->name;
2299 platform_driver->driver.pm = &asus_pm_ops;
2301 platform_device = platform_create_bundle(platform_driver,
2304 if (IS_ERR(platform_device))
2305 return PTR_ERR(platform_device);
2310 EXPORT_SYMBOL_GPL(asus_wmi_register_driver);
2312 void asus_wmi_unregister_driver(struct asus_wmi_driver *driver)
2314 platform_device_unregister(driver->platform_device);
2315 platform_driver_unregister(&driver->platform_driver);
2318 EXPORT_SYMBOL_GPL(asus_wmi_unregister_driver);
2320 static int __init asus_wmi_init(void)
2322 if (!wmi_has_guid(ASUS_WMI_MGMT_GUID)) {
2323 pr_info("Asus Management GUID not found\n");
2327 pr_info("ASUS WMI generic driver loaded\n");
2331 static void __exit asus_wmi_exit(void)
2333 pr_info("ASUS WMI generic driver unloaded\n");
2336 module_init(asus_wmi_init);
2337 module_exit(asus_wmi_exit);