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 <acpi/acpi_bus.h>
48 #include <acpi/acpi_drivers.h>
52 MODULE_AUTHOR("Corentin Chary <corentincj@iksaif.net>, "
53 "Yong Wang <yong.y.wang@intel.com>");
54 MODULE_DESCRIPTION("Asus Generic WMI Driver");
55 MODULE_LICENSE("GPL");
57 #define to_platform_driver(drv) \
58 (container_of((drv), struct platform_driver, driver))
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
73 #define ASUS_WMI_METHODID_SPEC 0x43455053 /* BIOS SPECification */
74 #define ASUS_WMI_METHODID_SFBD 0x44424653 /* Set First Boot Device */
75 #define ASUS_WMI_METHODID_GLCD 0x44434C47 /* Get LCD status */
76 #define ASUS_WMI_METHODID_GPID 0x44495047 /* Get Panel ID?? (Resol) */
77 #define ASUS_WMI_METHODID_QMOD 0x444F4D51 /* Quiet MODe */
78 #define ASUS_WMI_METHODID_SPLV 0x4C425053 /* Set Panel Light Value */
79 #define ASUS_WMI_METHODID_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_BLUETOOTH 0x00010013
101 #define ASUS_WMI_DEVID_GPS 0x00010015
102 #define ASUS_WMI_DEVID_WIMAX 0x00010017
103 #define ASUS_WMI_DEVID_WWAN3G 0x00010019
104 #define ASUS_WMI_DEVID_UWB 0x00010021
107 /* 0x000200XX and 0x000400XX */
108 #define ASUS_WMI_DEVID_LED1 0x00020011
109 #define ASUS_WMI_DEVID_LED2 0x00020012
110 #define ASUS_WMI_DEVID_LED3 0x00020013
111 #define ASUS_WMI_DEVID_LED4 0x00020014
112 #define ASUS_WMI_DEVID_LED5 0x00020015
113 #define ASUS_WMI_DEVID_LED6 0x00020016
115 /* Backlight and Brightness */
116 #define ASUS_WMI_DEVID_BACKLIGHT 0x00050011
117 #define ASUS_WMI_DEVID_BRIGHTNESS 0x00050012
118 #define ASUS_WMI_DEVID_KBD_BACKLIGHT 0x00050021
119 #define ASUS_WMI_DEVID_LIGHT_SENSOR 0x00050022 /* ?? */
122 #define ASUS_WMI_DEVID_CAMERA 0x00060013
125 #define ASUS_WMI_DEVID_CARDREADER 0x00080013
128 #define ASUS_WMI_DEVID_TOUCHPAD 0x00100011
129 #define ASUS_WMI_DEVID_TOUCHPAD_LED 0x00100012
132 #define ASUS_WMI_DEVID_THERMAL_CTRL 0x00110011
133 #define ASUS_WMI_DEVID_FAN_CTRL 0x00110012
136 #define ASUS_WMI_DEVID_PROCESSOR_STATE 0x00120012
139 #define ASUS_WMI_DSTS_STATUS_BIT 0x00000001
140 #define ASUS_WMI_DSTS_UNKNOWN_BIT 0x00000002
141 #define ASUS_WMI_DSTS_PRESENCE_BIT 0x00010000
142 #define ASUS_WMI_DSTS_USER_BIT 0x00020000
143 #define ASUS_WMI_DSTS_BIOS_BIT 0x00040000
144 #define ASUS_WMI_DSTS_BRIGHTNESS_MASK 0x000000FF
145 #define ASUS_WMI_DSTS_MAX_BRIGTH_MASK 0x0000FF00
153 * <platform>/ - debugfs root directory
154 * dev_id - current dev_id
155 * ctrl_param - current ctrl_param
156 * method_id - current method_id
157 * devs - call DEVS(dev_id, ctrl_param) and print result
158 * dsts - call DSTS(dev_id) and print result
159 * call - call method_id(dev_id, ctrl_param) and print result
161 struct asus_wmi_debug {
169 struct asus_wmi *asus;
170 struct rfkill *rfkill;
179 struct input_dev *inputdev;
180 struct backlight_device *backlight_device;
181 struct device *hwmon_device;
182 struct platform_device *platform_device;
184 struct led_classdev tpd_led;
186 struct led_classdev kbd_led;
188 struct workqueue_struct *led_workqueue;
189 struct work_struct tpd_led_work;
190 struct work_struct kbd_led_work;
192 struct asus_rfkill wlan;
193 struct asus_rfkill bluetooth;
194 struct asus_rfkill wimax;
195 struct asus_rfkill wwan3g;
197 struct hotplug_slot *hotplug_slot;
198 struct mutex hotplug_lock;
199 struct mutex wmi_lock;
200 struct workqueue_struct *hotplug_workqueue;
201 struct work_struct hotplug_work;
203 struct asus_wmi_debug debug;
205 struct asus_wmi_driver *driver;
208 static int asus_wmi_input_init(struct asus_wmi *asus)
212 asus->inputdev = input_allocate_device();
216 asus->inputdev->name = asus->driver->input_name;
217 asus->inputdev->phys = asus->driver->input_phys;
218 asus->inputdev->id.bustype = BUS_HOST;
219 asus->inputdev->dev.parent = &asus->platform_device->dev;
220 set_bit(EV_REP, asus->inputdev->evbit);
222 err = sparse_keymap_setup(asus->inputdev, asus->driver->keymap, NULL);
226 err = input_register_device(asus->inputdev);
228 goto err_free_keymap;
233 sparse_keymap_free(asus->inputdev);
235 input_free_device(asus->inputdev);
239 static void asus_wmi_input_exit(struct asus_wmi *asus)
241 if (asus->inputdev) {
242 sparse_keymap_free(asus->inputdev);
243 input_unregister_device(asus->inputdev);
246 asus->inputdev = NULL;
249 static int asus_wmi_evaluate_method(u32 method_id, u32 arg0, u32 arg1,
252 struct bios_args args = {
256 struct acpi_buffer input = { (acpi_size) sizeof(args), &args };
257 struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
259 union acpi_object *obj;
262 status = wmi_evaluate_method(ASUS_WMI_MGMT_GUID, 1, method_id,
265 if (ACPI_FAILURE(status))
268 obj = (union acpi_object *)output.pointer;
269 if (obj && obj->type == ACPI_TYPE_INTEGER)
270 tmp = (u32) obj->integer.value;
280 if (ACPI_FAILURE(status))
283 if (tmp == ASUS_WMI_UNSUPPORTED_METHOD)
289 static int asus_wmi_get_devstate(struct asus_wmi *asus, u32 dev_id, u32 *retval)
291 return asus_wmi_evaluate_method(asus->dsts_id, dev_id, 0, retval);
294 static int asus_wmi_set_devstate(u32 dev_id, u32 ctrl_param,
297 return asus_wmi_evaluate_method(ASUS_WMI_METHODID_DEVS, dev_id,
301 /* Helper for special devices with magic return codes */
302 static int asus_wmi_get_devstate_bits(struct asus_wmi *asus,
303 u32 dev_id, u32 mask)
308 err = asus_wmi_get_devstate(asus, dev_id, &retval);
313 if (!(retval & ASUS_WMI_DSTS_PRESENCE_BIT))
316 if (mask == ASUS_WMI_DSTS_STATUS_BIT) {
317 if (retval & ASUS_WMI_DSTS_UNKNOWN_BIT)
321 return retval & mask;
324 static int asus_wmi_get_devstate_simple(struct asus_wmi *asus, u32 dev_id)
326 return asus_wmi_get_devstate_bits(asus, dev_id,
327 ASUS_WMI_DSTS_STATUS_BIT);
334 * These functions actually update the LED's, and are called from a
335 * workqueue. By doing this as separate work rather than when the LED
336 * subsystem asks, we avoid messing with the Asus ACPI stuff during a
337 * potentially bad time, such as a timer interrupt.
339 static void tpd_led_update(struct work_struct *work)
342 struct asus_wmi *asus;
344 asus = container_of(work, struct asus_wmi, tpd_led_work);
346 ctrl_param = asus->tpd_led_wk;
347 asus_wmi_set_devstate(ASUS_WMI_DEVID_TOUCHPAD_LED, ctrl_param, NULL);
350 static void tpd_led_set(struct led_classdev *led_cdev,
351 enum led_brightness value)
353 struct asus_wmi *asus;
355 asus = container_of(led_cdev, struct asus_wmi, tpd_led);
357 asus->tpd_led_wk = !!value;
358 queue_work(asus->led_workqueue, &asus->tpd_led_work);
361 static int read_tpd_led_state(struct asus_wmi *asus)
363 return asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_TOUCHPAD_LED);
366 static enum led_brightness tpd_led_get(struct led_classdev *led_cdev)
368 struct asus_wmi *asus;
370 asus = container_of(led_cdev, struct asus_wmi, tpd_led);
372 return read_tpd_led_state(asus);
375 static void kbd_led_update(struct work_struct *work)
378 struct asus_wmi *asus;
380 asus = container_of(work, struct asus_wmi, kbd_led_work);
384 * bit 7: light on/off
386 if (asus->kbd_led_wk > 0)
387 ctrl_param = 0x80 | (asus->kbd_led_wk & 0x7F);
389 asus_wmi_set_devstate(ASUS_WMI_DEVID_KBD_BACKLIGHT, ctrl_param, NULL);
392 static int kbd_led_read(struct asus_wmi *asus, int *level, int *env)
398 * bit 7: light on/off
399 * bit 8-10: environment (0: dark, 1: normal, 2: light)
400 * bit 17: status unknown
402 retval = asus_wmi_get_devstate_bits(asus, ASUS_WMI_DEVID_KBD_BACKLIGHT,
405 /* Unknown status is considered as off */
406 if (retval == 0x8000)
411 *level = retval & 0x80 ? retval & 0x7F : 0;
413 *env = (retval >> 8) & 0x7F;
420 static void kbd_led_set(struct led_classdev *led_cdev,
421 enum led_brightness value)
423 struct asus_wmi *asus;
425 asus = container_of(led_cdev, struct asus_wmi, kbd_led);
427 if (value > asus->kbd_led.max_brightness)
428 value = asus->kbd_led.max_brightness;
432 asus->kbd_led_wk = value;
433 queue_work(asus->led_workqueue, &asus->kbd_led_work);
436 static enum led_brightness kbd_led_get(struct led_classdev *led_cdev)
438 struct asus_wmi *asus;
441 asus = container_of(led_cdev, struct asus_wmi, kbd_led);
443 retval = kbd_led_read(asus, &value, NULL);
451 static void asus_wmi_led_exit(struct asus_wmi *asus)
453 if (asus->tpd_led.dev)
454 led_classdev_unregister(&asus->tpd_led);
455 if (asus->led_workqueue)
456 destroy_workqueue(asus->led_workqueue);
459 static int asus_wmi_led_init(struct asus_wmi *asus)
463 asus->led_workqueue = create_singlethread_workqueue("led_workqueue");
464 if (!asus->led_workqueue)
467 if (read_tpd_led_state(asus) >= 0) {
468 INIT_WORK(&asus->tpd_led_work, tpd_led_update);
470 asus->tpd_led.name = "asus::touchpad";
471 asus->tpd_led.brightness_set = tpd_led_set;
472 asus->tpd_led.brightness_get = tpd_led_get;
473 asus->tpd_led.max_brightness = 1;
475 rv = led_classdev_register(&asus->platform_device->dev,
481 if (kbd_led_read(asus, NULL, NULL) >= 0) {
482 INIT_WORK(&asus->kbd_led_work, kbd_led_update);
484 asus->kbd_led.name = "asus::kbd_backlight";
485 asus->kbd_led.brightness_set = kbd_led_set;
486 asus->kbd_led.brightness_get = kbd_led_get;
487 asus->kbd_led.max_brightness = 3;
489 rv = led_classdev_register(&asus->platform_device->dev,
495 asus_wmi_led_exit(asus);
502 * PCI hotplug (for wlan rfkill)
504 static bool asus_wlan_rfkill_blocked(struct asus_wmi *asus)
506 int result = asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WLAN);
513 static void asus_rfkill_hotplug(struct asus_wmi *asus)
521 mutex_lock(&asus->wmi_lock);
522 blocked = asus_wlan_rfkill_blocked(asus);
523 mutex_unlock(&asus->wmi_lock);
525 mutex_lock(&asus->hotplug_lock);
527 if (asus->wlan.rfkill)
528 rfkill_set_sw_state(asus->wlan.rfkill, blocked);
530 if (asus->hotplug_slot) {
531 bus = pci_find_bus(0, 1);
533 pr_warn("Unable to find PCI bus 1?\n");
537 if (pci_bus_read_config_dword(bus, 0, PCI_VENDOR_ID, &l)) {
538 pr_err("Unable to read PCI config space?\n");
541 absent = (l == 0xffffffff);
543 if (blocked != absent) {
544 pr_warn("BIOS says wireless lan is %s, "
545 "but the pci device is %s\n",
546 blocked ? "blocked" : "unblocked",
547 absent ? "absent" : "present");
548 pr_warn("skipped wireless hotplug as probably "
549 "inappropriate for this model\n");
554 dev = pci_get_slot(bus, 0);
556 /* Device already present */
560 dev = pci_scan_single_device(bus, 0);
562 pci_bus_assign_resources(bus);
563 if (pci_bus_add_device(dev))
564 pr_err("Unable to hotplug wifi\n");
567 dev = pci_get_slot(bus, 0);
569 pci_remove_bus_device(dev);
576 mutex_unlock(&asus->hotplug_lock);
579 static void asus_rfkill_notify(acpi_handle handle, u32 event, void *data)
581 struct asus_wmi *asus = data;
583 if (event != ACPI_NOTIFY_BUS_CHECK)
587 * We can't call directly asus_rfkill_hotplug because most
588 * of the time WMBC is still being executed and not reetrant.
589 * There is currently no way to tell ACPICA that we want this
590 * method to be serialized, we schedule a asus_rfkill_hotplug
591 * call later, in a safer context.
593 queue_work(asus->hotplug_workqueue, &asus->hotplug_work);
596 static int asus_register_rfkill_notifier(struct asus_wmi *asus, char *node)
601 status = acpi_get_handle(NULL, node, &handle);
603 if (ACPI_SUCCESS(status)) {
604 status = acpi_install_notify_handler(handle,
606 asus_rfkill_notify, asus);
607 if (ACPI_FAILURE(status))
608 pr_warn("Failed to register notify on %s\n", node);
615 static void asus_unregister_rfkill_notifier(struct asus_wmi *asus, char *node)
617 acpi_status status = AE_OK;
620 status = acpi_get_handle(NULL, node, &handle);
622 if (ACPI_SUCCESS(status)) {
623 status = acpi_remove_notify_handler(handle,
626 if (ACPI_FAILURE(status))
627 pr_err("Error removing rfkill notify handler %s\n",
632 static int asus_get_adapter_status(struct hotplug_slot *hotplug_slot,
635 struct asus_wmi *asus = hotplug_slot->private;
636 int result = asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WLAN);
645 static void asus_cleanup_pci_hotplug(struct hotplug_slot *hotplug_slot)
647 kfree(hotplug_slot->info);
651 static struct hotplug_slot_ops asus_hotplug_slot_ops = {
652 .owner = THIS_MODULE,
653 .get_adapter_status = asus_get_adapter_status,
654 .get_power_status = asus_get_adapter_status,
657 static void asus_hotplug_work(struct work_struct *work)
659 struct asus_wmi *asus;
661 asus = container_of(work, struct asus_wmi, hotplug_work);
662 asus_rfkill_hotplug(asus);
665 static int asus_setup_pci_hotplug(struct asus_wmi *asus)
668 struct pci_bus *bus = pci_find_bus(0, 1);
671 pr_err("Unable to find wifi PCI bus\n");
675 asus->hotplug_workqueue =
676 create_singlethread_workqueue("hotplug_workqueue");
677 if (!asus->hotplug_workqueue)
678 goto error_workqueue;
680 INIT_WORK(&asus->hotplug_work, asus_hotplug_work);
682 asus->hotplug_slot = kzalloc(sizeof(struct hotplug_slot), GFP_KERNEL);
683 if (!asus->hotplug_slot)
686 asus->hotplug_slot->info = kzalloc(sizeof(struct hotplug_slot_info),
688 if (!asus->hotplug_slot->info)
691 asus->hotplug_slot->private = asus;
692 asus->hotplug_slot->release = &asus_cleanup_pci_hotplug;
693 asus->hotplug_slot->ops = &asus_hotplug_slot_ops;
694 asus_get_adapter_status(asus->hotplug_slot,
695 &asus->hotplug_slot->info->adapter_status);
697 ret = pci_hp_register(asus->hotplug_slot, bus, 0, "asus-wifi");
699 pr_err("Unable to register hotplug slot - %d\n", ret);
706 kfree(asus->hotplug_slot->info);
708 kfree(asus->hotplug_slot);
709 asus->hotplug_slot = NULL;
711 destroy_workqueue(asus->hotplug_workqueue);
719 static int asus_rfkill_set(void *data, bool blocked)
721 struct asus_rfkill *priv = data;
722 u32 ctrl_param = !blocked;
724 return asus_wmi_set_devstate(priv->dev_id, ctrl_param, NULL);
727 static void asus_rfkill_query(struct rfkill *rfkill, void *data)
729 struct asus_rfkill *priv = data;
732 result = asus_wmi_get_devstate_simple(priv->asus, priv->dev_id);
737 rfkill_set_sw_state(priv->rfkill, !result);
740 static int asus_rfkill_wlan_set(void *data, bool blocked)
742 struct asus_rfkill *priv = data;
743 struct asus_wmi *asus = priv->asus;
747 * This handler is enabled only if hotplug is enabled.
748 * In this case, the asus_wmi_set_devstate() will
749 * trigger a wmi notification and we need to wait
750 * this call to finish before being able to call
753 mutex_lock(&asus->wmi_lock);
754 ret = asus_rfkill_set(data, blocked);
755 mutex_unlock(&asus->wmi_lock);
759 static const struct rfkill_ops asus_rfkill_wlan_ops = {
760 .set_block = asus_rfkill_wlan_set,
761 .query = asus_rfkill_query,
764 static const struct rfkill_ops asus_rfkill_ops = {
765 .set_block = asus_rfkill_set,
766 .query = asus_rfkill_query,
769 static int asus_new_rfkill(struct asus_wmi *asus,
770 struct asus_rfkill *arfkill,
771 const char *name, enum rfkill_type type, int dev_id)
773 int result = asus_wmi_get_devstate_simple(asus, dev_id);
774 struct rfkill **rfkill = &arfkill->rfkill;
779 arfkill->dev_id = dev_id;
780 arfkill->asus = asus;
782 if (dev_id == ASUS_WMI_DEVID_WLAN && asus->driver->hotplug_wireless)
783 *rfkill = rfkill_alloc(name, &asus->platform_device->dev, type,
784 &asus_rfkill_wlan_ops, arfkill);
786 *rfkill = rfkill_alloc(name, &asus->platform_device->dev, type,
787 &asus_rfkill_ops, arfkill);
792 rfkill_init_sw_state(*rfkill, !result);
793 result = rfkill_register(*rfkill);
795 rfkill_destroy(*rfkill);
802 static void asus_wmi_rfkill_exit(struct asus_wmi *asus)
804 asus_unregister_rfkill_notifier(asus, "\\_SB.PCI0.P0P5");
805 asus_unregister_rfkill_notifier(asus, "\\_SB.PCI0.P0P6");
806 asus_unregister_rfkill_notifier(asus, "\\_SB.PCI0.P0P7");
807 if (asus->wlan.rfkill) {
808 rfkill_unregister(asus->wlan.rfkill);
809 rfkill_destroy(asus->wlan.rfkill);
810 asus->wlan.rfkill = NULL;
813 * Refresh pci hotplug in case the rfkill state was changed after
814 * asus_unregister_rfkill_notifier()
816 asus_rfkill_hotplug(asus);
817 if (asus->hotplug_slot)
818 pci_hp_deregister(asus->hotplug_slot);
819 if (asus->hotplug_workqueue)
820 destroy_workqueue(asus->hotplug_workqueue);
822 if (asus->bluetooth.rfkill) {
823 rfkill_unregister(asus->bluetooth.rfkill);
824 rfkill_destroy(asus->bluetooth.rfkill);
825 asus->bluetooth.rfkill = NULL;
827 if (asus->wimax.rfkill) {
828 rfkill_unregister(asus->wimax.rfkill);
829 rfkill_destroy(asus->wimax.rfkill);
830 asus->wimax.rfkill = NULL;
832 if (asus->wwan3g.rfkill) {
833 rfkill_unregister(asus->wwan3g.rfkill);
834 rfkill_destroy(asus->wwan3g.rfkill);
835 asus->wwan3g.rfkill = NULL;
839 static int asus_wmi_rfkill_init(struct asus_wmi *asus)
843 mutex_init(&asus->hotplug_lock);
844 mutex_init(&asus->wmi_lock);
846 result = asus_new_rfkill(asus, &asus->wlan, "asus-wlan",
847 RFKILL_TYPE_WLAN, ASUS_WMI_DEVID_WLAN);
849 if (result && result != -ENODEV)
852 result = asus_new_rfkill(asus, &asus->bluetooth,
853 "asus-bluetooth", RFKILL_TYPE_BLUETOOTH,
854 ASUS_WMI_DEVID_BLUETOOTH);
856 if (result && result != -ENODEV)
859 result = asus_new_rfkill(asus, &asus->wimax, "asus-wimax",
860 RFKILL_TYPE_WIMAX, ASUS_WMI_DEVID_WIMAX);
862 if (result && result != -ENODEV)
865 result = asus_new_rfkill(asus, &asus->wwan3g, "asus-wwan3g",
866 RFKILL_TYPE_WWAN, ASUS_WMI_DEVID_WWAN3G);
868 if (result && result != -ENODEV)
871 if (!asus->driver->hotplug_wireless)
874 result = asus_setup_pci_hotplug(asus);
876 * If we get -EBUSY then something else is handling the PCI hotplug -
877 * don't fail in this case
879 if (result == -EBUSY)
882 asus_register_rfkill_notifier(asus, "\\_SB.PCI0.P0P5");
883 asus_register_rfkill_notifier(asus, "\\_SB.PCI0.P0P6");
884 asus_register_rfkill_notifier(asus, "\\_SB.PCI0.P0P7");
886 * Refresh pci hotplug in case the rfkill state was changed during
889 asus_rfkill_hotplug(asus);
892 if (result && result != -ENODEV)
893 asus_wmi_rfkill_exit(asus);
895 if (result == -ENODEV)
904 static ssize_t asus_hwmon_pwm1(struct device *dev,
905 struct device_attribute *attr,
908 struct asus_wmi *asus = dev_get_drvdata(dev);
912 err = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_FAN_CTRL, &value);
919 if (value == 1) /* Low Speed */
925 else if (value != 0) {
926 pr_err("Unknown fan speed %#x", value);
930 return sprintf(buf, "%d\n", value);
933 static SENSOR_DEVICE_ATTR(pwm1, S_IRUGO, asus_hwmon_pwm1, NULL, 0);
936 show_name(struct device *dev, struct device_attribute *attr, char *buf)
938 return sprintf(buf, "asus\n");
940 static SENSOR_DEVICE_ATTR(name, S_IRUGO, show_name, NULL, 0);
942 static struct attribute *hwmon_attributes[] = {
943 &sensor_dev_attr_pwm1.dev_attr.attr,
944 &sensor_dev_attr_name.dev_attr.attr,
948 static mode_t asus_hwmon_sysfs_is_visible(struct kobject *kobj,
949 struct attribute *attr, int idx)
951 struct device *dev = container_of(kobj, struct device, kobj);
952 struct platform_device *pdev = to_platform_device(dev->parent);
953 struct asus_wmi *asus = platform_get_drvdata(pdev);
956 u32 value = ASUS_WMI_UNSUPPORTED_METHOD;
958 if (attr == &sensor_dev_attr_pwm1.dev_attr.attr)
959 dev_id = ASUS_WMI_DEVID_FAN_CTRL;
962 int err = asus_wmi_get_devstate(asus, dev_id, &value);
965 return 0; /* can't return negative here */
968 if (dev_id == ASUS_WMI_DEVID_FAN_CTRL) {
970 * We need to find a better way, probably using sfun,
972 * Currently we disable it if:
973 * - ASUS_WMI_UNSUPPORTED_METHOD is returned
974 * - reverved bits are non-zero
975 * - sfun and presence bit are not set
977 if (value == ASUS_WMI_UNSUPPORTED_METHOD || value & 0xFFF80000
978 || (!asus->sfun && !(value & ASUS_WMI_DSTS_PRESENCE_BIT)))
982 return ok ? attr->mode : 0;
985 static struct attribute_group hwmon_attribute_group = {
986 .is_visible = asus_hwmon_sysfs_is_visible,
987 .attrs = hwmon_attributes
990 static void asus_wmi_hwmon_exit(struct asus_wmi *asus)
992 struct device *hwmon;
994 hwmon = asus->hwmon_device;
997 sysfs_remove_group(&hwmon->kobj, &hwmon_attribute_group);
998 hwmon_device_unregister(hwmon);
999 asus->hwmon_device = NULL;
1002 static int asus_wmi_hwmon_init(struct asus_wmi *asus)
1004 struct device *hwmon;
1007 hwmon = hwmon_device_register(&asus->platform_device->dev);
1008 if (IS_ERR(hwmon)) {
1009 pr_err("Could not register asus hwmon device\n");
1010 return PTR_ERR(hwmon);
1012 dev_set_drvdata(hwmon, asus);
1013 asus->hwmon_device = hwmon;
1014 result = sysfs_create_group(&hwmon->kobj, &hwmon_attribute_group);
1016 asus_wmi_hwmon_exit(asus);
1023 static int read_backlight_power(struct asus_wmi *asus)
1025 int ret = asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_BACKLIGHT);
1030 return ret ? FB_BLANK_UNBLANK : FB_BLANK_POWERDOWN;
1033 static int read_brightness_max(struct asus_wmi *asus)
1038 err = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_BRIGHTNESS, &retval);
1043 retval = retval & ASUS_WMI_DSTS_MAX_BRIGTH_MASK;
1052 static int read_brightness(struct backlight_device *bd)
1054 struct asus_wmi *asus = bl_get_data(bd);
1058 err = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_BRIGHTNESS, &retval);
1063 return retval & ASUS_WMI_DSTS_BRIGHTNESS_MASK;
1066 static int update_bl_status(struct backlight_device *bd)
1068 struct asus_wmi *asus = bl_get_data(bd);
1072 ctrl_param = bd->props.brightness;
1074 err = asus_wmi_set_devstate(ASUS_WMI_DEVID_BRIGHTNESS,
1080 power = read_backlight_power(asus);
1081 if (power != -ENODEV && bd->props.power != power) {
1082 ctrl_param = !!(bd->props.power == FB_BLANK_UNBLANK);
1083 err = asus_wmi_set_devstate(ASUS_WMI_DEVID_BACKLIGHT,
1089 static const struct backlight_ops asus_wmi_bl_ops = {
1090 .get_brightness = read_brightness,
1091 .update_status = update_bl_status,
1094 static int asus_wmi_backlight_notify(struct asus_wmi *asus, int code)
1096 struct backlight_device *bd = asus->backlight_device;
1097 int old = bd->props.brightness;
1100 if (code >= NOTIFY_BRNUP_MIN && code <= NOTIFY_BRNUP_MAX)
1101 new = code - NOTIFY_BRNUP_MIN + 1;
1102 else if (code >= NOTIFY_BRNDOWN_MIN && code <= NOTIFY_BRNDOWN_MAX)
1103 new = code - NOTIFY_BRNDOWN_MIN;
1105 bd->props.brightness = new;
1106 backlight_update_status(bd);
1107 backlight_force_update(bd, BACKLIGHT_UPDATE_HOTKEY);
1112 static int asus_wmi_backlight_init(struct asus_wmi *asus)
1114 struct backlight_device *bd;
1115 struct backlight_properties props;
1119 max = read_brightness_max(asus);
1126 power = read_backlight_power(asus);
1128 if (power == -ENODEV)
1129 power = FB_BLANK_UNBLANK;
1133 memset(&props, 0, sizeof(struct backlight_properties));
1134 props.type = BACKLIGHT_PLATFORM;
1135 props.max_brightness = max;
1136 bd = backlight_device_register(asus->driver->name,
1137 &asus->platform_device->dev, asus,
1138 &asus_wmi_bl_ops, &props);
1140 pr_err("Could not register backlight device\n");
1144 asus->backlight_device = bd;
1146 bd->props.brightness = read_brightness(bd);
1147 bd->props.power = power;
1148 backlight_update_status(bd);
1153 static void asus_wmi_backlight_exit(struct asus_wmi *asus)
1155 if (asus->backlight_device)
1156 backlight_device_unregister(asus->backlight_device);
1158 asus->backlight_device = NULL;
1161 static void asus_wmi_notify(u32 value, void *context)
1163 struct asus_wmi *asus = context;
1164 struct acpi_buffer response = { ACPI_ALLOCATE_BUFFER, NULL };
1165 union acpi_object *obj;
1169 unsigned int key_value = 1;
1170 bool autorelease = 1;
1172 status = wmi_get_event_data(value, &response);
1173 if (status != AE_OK) {
1174 pr_err("bad event status 0x%x\n", status);
1178 obj = (union acpi_object *)response.pointer;
1180 if (!obj || obj->type != ACPI_TYPE_INTEGER)
1183 code = obj->integer.value;
1186 if (asus->driver->key_filter) {
1187 asus->driver->key_filter(asus->driver, &code, &key_value,
1189 if (code == ASUS_WMI_KEY_IGNORE)
1193 if (code >= NOTIFY_BRNUP_MIN && code <= NOTIFY_BRNUP_MAX)
1194 code = NOTIFY_BRNUP_MIN;
1195 else if (code >= NOTIFY_BRNDOWN_MIN &&
1196 code <= NOTIFY_BRNDOWN_MAX)
1197 code = NOTIFY_BRNDOWN_MIN;
1199 if (code == NOTIFY_BRNUP_MIN || code == NOTIFY_BRNDOWN_MIN) {
1200 if (!acpi_video_backlight_support())
1201 asus_wmi_backlight_notify(asus, orig_code);
1202 } else if (!sparse_keymap_report_event(asus->inputdev, code,
1203 key_value, autorelease))
1204 pr_info("Unknown key %x pressed\n", code);
1213 static int parse_arg(const char *buf, unsigned long count, int *val)
1217 if (sscanf(buf, "%i", val) != 1)
1222 static ssize_t store_sys_wmi(struct asus_wmi *asus, int devid,
1223 const char *buf, size_t count)
1228 value = asus_wmi_get_devstate_simple(asus, devid);
1229 if (value == -ENODEV) /* Check device presence */
1232 rv = parse_arg(buf, count, &value);
1233 err = asus_wmi_set_devstate(devid, value, &retval);
1241 static ssize_t show_sys_wmi(struct asus_wmi *asus, int devid, char *buf)
1243 int value = asus_wmi_get_devstate_simple(asus, devid);
1248 return sprintf(buf, "%d\n", value);
1251 #define ASUS_WMI_CREATE_DEVICE_ATTR(_name, _mode, _cm) \
1252 static ssize_t show_##_name(struct device *dev, \
1253 struct device_attribute *attr, \
1256 struct asus_wmi *asus = dev_get_drvdata(dev); \
1258 return show_sys_wmi(asus, _cm, buf); \
1260 static ssize_t store_##_name(struct device *dev, \
1261 struct device_attribute *attr, \
1262 const char *buf, size_t count) \
1264 struct asus_wmi *asus = dev_get_drvdata(dev); \
1266 return store_sys_wmi(asus, _cm, buf, count); \
1268 static struct device_attribute dev_attr_##_name = { \
1270 .name = __stringify(_name), \
1272 .show = show_##_name, \
1273 .store = store_##_name, \
1276 ASUS_WMI_CREATE_DEVICE_ATTR(touchpad, 0644, ASUS_WMI_DEVID_TOUCHPAD);
1277 ASUS_WMI_CREATE_DEVICE_ATTR(camera, 0644, ASUS_WMI_DEVID_CAMERA);
1278 ASUS_WMI_CREATE_DEVICE_ATTR(cardr, 0644, ASUS_WMI_DEVID_CARDREADER);
1280 static ssize_t store_cpufv(struct device *dev, struct device_attribute *attr,
1281 const char *buf, size_t count)
1285 if (!count || sscanf(buf, "%i", &value) != 1)
1287 if (value < 0 || value > 2)
1290 return asus_wmi_evaluate_method(ASUS_WMI_METHODID_CFVS, value, 0, NULL);
1293 static DEVICE_ATTR(cpufv, S_IRUGO | S_IWUSR, NULL, store_cpufv);
1295 static struct attribute *platform_attributes[] = {
1296 &dev_attr_cpufv.attr,
1297 &dev_attr_camera.attr,
1298 &dev_attr_cardr.attr,
1299 &dev_attr_touchpad.attr,
1303 static mode_t asus_sysfs_is_visible(struct kobject *kobj,
1304 struct attribute *attr, int idx)
1306 struct device *dev = container_of(kobj, struct device, kobj);
1307 struct platform_device *pdev = to_platform_device(dev);
1308 struct asus_wmi *asus = platform_get_drvdata(pdev);
1312 if (attr == &dev_attr_camera.attr)
1313 devid = ASUS_WMI_DEVID_CAMERA;
1314 else if (attr == &dev_attr_cardr.attr)
1315 devid = ASUS_WMI_DEVID_CARDREADER;
1316 else if (attr == &dev_attr_touchpad.attr)
1317 devid = ASUS_WMI_DEVID_TOUCHPAD;
1320 ok = !(asus_wmi_get_devstate_simple(asus, devid) < 0);
1322 return ok ? attr->mode : 0;
1325 static struct attribute_group platform_attribute_group = {
1326 .is_visible = asus_sysfs_is_visible,
1327 .attrs = platform_attributes
1330 static void asus_wmi_sysfs_exit(struct platform_device *device)
1332 sysfs_remove_group(&device->dev.kobj, &platform_attribute_group);
1335 static int asus_wmi_sysfs_init(struct platform_device *device)
1337 return sysfs_create_group(&device->dev.kobj, &platform_attribute_group);
1343 static int asus_wmi_platform_init(struct asus_wmi *asus)
1347 /* INIT enable hotkeys on some models */
1348 if (!asus_wmi_evaluate_method(ASUS_WMI_METHODID_INIT, 0, 0, &rv))
1349 pr_info("Initialization: %#x", rv);
1351 /* We don't know yet what to do with this version... */
1352 if (!asus_wmi_evaluate_method(ASUS_WMI_METHODID_SPEC, 0, 0x9, &rv)) {
1353 pr_info("BIOS WMI version: %d.%d", rv >> 16, rv & 0xFF);
1358 * The SFUN method probably allows the original driver to get the list
1359 * of features supported by a given model. For now, 0x0100 or 0x0800
1360 * bit signifies that the laptop is equipped with a Wi-Fi MiniPCI card.
1361 * The significance of others is yet to be found.
1363 if (!asus_wmi_evaluate_method(ASUS_WMI_METHODID_SFUN, 0, 0, &rv)) {
1364 pr_info("SFUN value: %#x", rv);
1369 * Eee PC and Notebooks seems to have different method_id for DSTS,
1370 * but it may also be related to the BIOS's SPEC.
1371 * Note, on most Eeepc, there is no way to check if a method exist
1372 * or note, while on notebooks, they returns 0xFFFFFFFE on failure,
1373 * but once again, SPEC may probably be used for that kind of things.
1375 if (!asus_wmi_evaluate_method(ASUS_WMI_METHODID_DSTS, 0, 0, NULL))
1376 asus->dsts_id = ASUS_WMI_METHODID_DSTS;
1377 else if (!asus_wmi_evaluate_method(ASUS_WMI_METHODID_DSTS2, 0, 0, NULL))
1378 asus->dsts_id = ASUS_WMI_METHODID_DSTS2;
1380 if (!asus->dsts_id) {
1381 pr_err("Can't find DSTS");
1385 return asus_wmi_sysfs_init(asus->platform_device);
1388 static void asus_wmi_platform_exit(struct asus_wmi *asus)
1390 asus_wmi_sysfs_exit(asus->platform_device);
1396 struct asus_wmi_debugfs_node {
1397 struct asus_wmi *asus;
1399 int (*show) (struct seq_file *m, void *data);
1402 static int show_dsts(struct seq_file *m, void *data)
1404 struct asus_wmi *asus = m->private;
1408 err = asus_wmi_get_devstate(asus, asus->debug.dev_id, &retval);
1413 seq_printf(m, "DSTS(%#x) = %#x\n", asus->debug.dev_id, retval);
1418 static int show_devs(struct seq_file *m, void *data)
1420 struct asus_wmi *asus = m->private;
1424 err = asus_wmi_set_devstate(asus->debug.dev_id, asus->debug.ctrl_param,
1430 seq_printf(m, "DEVS(%#x, %#x) = %#x\n", asus->debug.dev_id,
1431 asus->debug.ctrl_param, retval);
1436 static int show_call(struct seq_file *m, void *data)
1438 struct asus_wmi *asus = m->private;
1439 struct bios_args args = {
1440 .arg0 = asus->debug.dev_id,
1441 .arg1 = asus->debug.ctrl_param,
1443 struct acpi_buffer input = { (acpi_size) sizeof(args), &args };
1444 struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
1445 union acpi_object *obj;
1448 status = wmi_evaluate_method(ASUS_WMI_MGMT_GUID,
1449 1, asus->debug.method_id,
1452 if (ACPI_FAILURE(status))
1455 obj = (union acpi_object *)output.pointer;
1456 if (obj && obj->type == ACPI_TYPE_INTEGER)
1457 seq_printf(m, "%#x(%#x, %#x) = %#x\n", asus->debug.method_id,
1458 asus->debug.dev_id, asus->debug.ctrl_param,
1459 (u32) obj->integer.value);
1461 seq_printf(m, "%#x(%#x, %#x) = t:%d\n", asus->debug.method_id,
1462 asus->debug.dev_id, asus->debug.ctrl_param,
1463 obj ? obj->type : -1);
1470 static struct asus_wmi_debugfs_node asus_wmi_debug_files[] = {
1471 {NULL, "devs", show_devs},
1472 {NULL, "dsts", show_dsts},
1473 {NULL, "call", show_call},
1476 static int asus_wmi_debugfs_open(struct inode *inode, struct file *file)
1478 struct asus_wmi_debugfs_node *node = inode->i_private;
1480 return single_open(file, node->show, node->asus);
1483 static const struct file_operations asus_wmi_debugfs_io_ops = {
1484 .owner = THIS_MODULE,
1485 .open = asus_wmi_debugfs_open,
1487 .llseek = seq_lseek,
1488 .release = single_release,
1491 static void asus_wmi_debugfs_exit(struct asus_wmi *asus)
1493 debugfs_remove_recursive(asus->debug.root);
1496 static int asus_wmi_debugfs_init(struct asus_wmi *asus)
1498 struct dentry *dent;
1501 asus->debug.root = debugfs_create_dir(asus->driver->name, NULL);
1502 if (!asus->debug.root) {
1503 pr_err("failed to create debugfs directory");
1507 dent = debugfs_create_x32("method_id", S_IRUGO | S_IWUSR,
1508 asus->debug.root, &asus->debug.method_id);
1512 dent = debugfs_create_x32("dev_id", S_IRUGO | S_IWUSR,
1513 asus->debug.root, &asus->debug.dev_id);
1517 dent = debugfs_create_x32("ctrl_param", S_IRUGO | S_IWUSR,
1518 asus->debug.root, &asus->debug.ctrl_param);
1522 for (i = 0; i < ARRAY_SIZE(asus_wmi_debug_files); i++) {
1523 struct asus_wmi_debugfs_node *node = &asus_wmi_debug_files[i];
1526 dent = debugfs_create_file(node->name, S_IFREG | S_IRUGO,
1527 asus->debug.root, node,
1528 &asus_wmi_debugfs_io_ops);
1530 pr_err("failed to create debug file: %s\n", node->name);
1538 asus_wmi_debugfs_exit(asus);
1545 static int asus_wmi_add(struct platform_device *pdev)
1547 struct platform_driver *pdrv = to_platform_driver(pdev->dev.driver);
1548 struct asus_wmi_driver *wdrv = to_asus_wmi_driver(pdrv);
1549 struct asus_wmi *asus;
1553 asus = kzalloc(sizeof(struct asus_wmi), GFP_KERNEL);
1557 asus->driver = wdrv;
1558 asus->platform_device = pdev;
1559 wdrv->platform_device = pdev;
1560 platform_set_drvdata(asus->platform_device, asus);
1563 wdrv->quirks(asus->driver);
1565 err = asus_wmi_platform_init(asus);
1569 err = asus_wmi_input_init(asus);
1573 err = asus_wmi_hwmon_init(asus);
1577 err = asus_wmi_led_init(asus);
1581 err = asus_wmi_rfkill_init(asus);
1585 if (!acpi_video_backlight_support()) {
1586 err = asus_wmi_backlight_init(asus);
1587 if (err && err != -ENODEV)
1588 goto fail_backlight;
1590 pr_info("Backlight controlled by ACPI video driver\n");
1592 status = wmi_install_notify_handler(asus->driver->event_guid,
1593 asus_wmi_notify, asus);
1594 if (ACPI_FAILURE(status)) {
1595 pr_err("Unable to register notify handler - %d\n", status);
1597 goto fail_wmi_handler;
1600 err = asus_wmi_debugfs_init(asus);
1607 wmi_remove_notify_handler(asus->driver->event_guid);
1609 asus_wmi_backlight_exit(asus);
1611 asus_wmi_rfkill_exit(asus);
1613 asus_wmi_led_exit(asus);
1615 asus_wmi_hwmon_exit(asus);
1617 asus_wmi_input_exit(asus);
1619 asus_wmi_platform_exit(asus);
1625 static int asus_wmi_remove(struct platform_device *device)
1627 struct asus_wmi *asus;
1629 asus = platform_get_drvdata(device);
1630 wmi_remove_notify_handler(asus->driver->event_guid);
1631 asus_wmi_backlight_exit(asus);
1632 asus_wmi_input_exit(asus);
1633 asus_wmi_hwmon_exit(asus);
1634 asus_wmi_led_exit(asus);
1635 asus_wmi_rfkill_exit(asus);
1636 asus_wmi_debugfs_exit(asus);
1637 asus_wmi_platform_exit(asus);
1644 * Platform driver - hibernate/resume callbacks
1646 static int asus_hotk_thaw(struct device *device)
1648 struct asus_wmi *asus = dev_get_drvdata(device);
1650 if (asus->wlan.rfkill) {
1654 * Work around bios bug - acpi _PTS turns off the wireless led
1655 * during suspend. Normally it restores it on resume, but
1656 * we should kick it ourselves in case hibernation is aborted.
1658 wlan = asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WLAN);
1659 asus_wmi_set_devstate(ASUS_WMI_DEVID_WLAN, wlan, NULL);
1665 static int asus_hotk_restore(struct device *device)
1667 struct asus_wmi *asus = dev_get_drvdata(device);
1670 /* Refresh both wlan rfkill state and pci hotplug */
1671 if (asus->wlan.rfkill)
1672 asus_rfkill_hotplug(asus);
1674 if (asus->bluetooth.rfkill) {
1675 bl = !asus_wmi_get_devstate_simple(asus,
1676 ASUS_WMI_DEVID_BLUETOOTH);
1677 rfkill_set_sw_state(asus->bluetooth.rfkill, bl);
1679 if (asus->wimax.rfkill) {
1680 bl = !asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WIMAX);
1681 rfkill_set_sw_state(asus->wimax.rfkill, bl);
1683 if (asus->wwan3g.rfkill) {
1684 bl = !asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WWAN3G);
1685 rfkill_set_sw_state(asus->wwan3g.rfkill, bl);
1691 static const struct dev_pm_ops asus_pm_ops = {
1692 .thaw = asus_hotk_thaw,
1693 .restore = asus_hotk_restore,
1696 static int asus_wmi_probe(struct platform_device *pdev)
1698 struct platform_driver *pdrv = to_platform_driver(pdev->dev.driver);
1699 struct asus_wmi_driver *wdrv = to_asus_wmi_driver(pdrv);
1702 if (!wmi_has_guid(ASUS_WMI_MGMT_GUID)) {
1703 pr_warn("Management GUID not found\n");
1707 if (wdrv->event_guid && !wmi_has_guid(wdrv->event_guid)) {
1708 pr_warn("Event GUID not found\n");
1713 ret = wdrv->probe(pdev);
1718 return asus_wmi_add(pdev);
1723 int __init_or_module asus_wmi_register_driver(struct asus_wmi_driver *driver)
1725 struct platform_driver *platform_driver;
1726 struct platform_device *platform_device;
1731 platform_driver = &driver->platform_driver;
1732 platform_driver->remove = asus_wmi_remove;
1733 platform_driver->driver.owner = driver->owner;
1734 platform_driver->driver.name = driver->name;
1735 platform_driver->driver.pm = &asus_pm_ops;
1737 platform_device = platform_create_bundle(platform_driver,
1740 if (IS_ERR(platform_device))
1741 return PTR_ERR(platform_device);
1746 EXPORT_SYMBOL_GPL(asus_wmi_register_driver);
1748 void asus_wmi_unregister_driver(struct asus_wmi_driver *driver)
1750 platform_device_unregister(driver->platform_device);
1751 platform_driver_unregister(&driver->platform_driver);
1754 EXPORT_SYMBOL_GPL(asus_wmi_unregister_driver);
1756 static int __init asus_wmi_init(void)
1758 if (!wmi_has_guid(ASUS_WMI_MGMT_GUID)) {
1759 pr_info("Asus Management GUID not found");
1763 pr_info("ASUS WMI generic driver loaded");
1767 static void __exit asus_wmi_exit(void)
1769 pr_info("ASUS WMI generic driver unloaded");
1772 module_init(asus_wmi_init);
1773 module_exit(asus_wmi_exit);