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
168 * Struct that's used for all methods called via AGFN. Naming is
169 * identically to the AML code.
172 u16 mfun; /* probably "Multi-function" to be called */
173 u16 sfun; /* probably "Sub-function" to be called */
174 u16 len; /* size of the hole struct, including subfunction fields */
175 u8 stas; /* not used by now */
176 u8 err; /* zero on success */
179 /* struct used for calling fan read and write methods */
181 struct agfn_args agfn; /* common fields */
182 u8 fan; /* fan number: 0: set auto mode 1: 1st fan */
183 u32 speed; /* read: RPM/100 - write: 0-255 */
187 * <platform>/ - debugfs root directory
188 * dev_id - current dev_id
189 * ctrl_param - current ctrl_param
190 * method_id - current method_id
191 * devs - call DEVS(dev_id, ctrl_param) and print result
192 * dsts - call DSTS(dev_id) and print result
193 * call - call method_id(dev_id, ctrl_param) and print result
195 struct asus_wmi_debug {
203 struct asus_wmi *asus;
204 struct rfkill *rfkill;
213 struct input_dev *inputdev;
214 struct backlight_device *backlight_device;
215 struct platform_device *platform_device;
217 struct led_classdev wlan_led;
219 struct led_classdev tpd_led;
221 struct led_classdev kbd_led;
223 struct workqueue_struct *led_workqueue;
224 struct work_struct tpd_led_work;
225 struct work_struct kbd_led_work;
226 struct work_struct wlan_led_work;
228 struct asus_rfkill wlan;
229 struct asus_rfkill bluetooth;
230 struct asus_rfkill wimax;
231 struct asus_rfkill wwan3g;
232 struct asus_rfkill gps;
233 struct asus_rfkill uwb;
235 bool asus_hwmon_fan_manual_mode;
236 int asus_hwmon_num_fans;
239 struct hotplug_slot *hotplug_slot;
240 struct mutex hotplug_lock;
241 struct mutex wmi_lock;
242 struct workqueue_struct *hotplug_workqueue;
243 struct work_struct hotplug_work;
245 struct asus_wmi_debug debug;
247 struct asus_wmi_driver *driver;
250 static int asus_wmi_input_init(struct asus_wmi *asus)
254 asus->inputdev = input_allocate_device();
258 asus->inputdev->name = asus->driver->input_name;
259 asus->inputdev->phys = asus->driver->input_phys;
260 asus->inputdev->id.bustype = BUS_HOST;
261 asus->inputdev->dev.parent = &asus->platform_device->dev;
262 set_bit(EV_REP, asus->inputdev->evbit);
264 err = sparse_keymap_setup(asus->inputdev, asus->driver->keymap, NULL);
268 err = input_register_device(asus->inputdev);
270 goto err_free_keymap;
275 sparse_keymap_free(asus->inputdev);
277 input_free_device(asus->inputdev);
281 static void asus_wmi_input_exit(struct asus_wmi *asus)
283 if (asus->inputdev) {
284 sparse_keymap_free(asus->inputdev);
285 input_unregister_device(asus->inputdev);
288 asus->inputdev = NULL;
291 static int asus_wmi_evaluate_method(u32 method_id, u32 arg0, u32 arg1,
294 struct bios_args args = {
298 struct acpi_buffer input = { (acpi_size) sizeof(args), &args };
299 struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
301 union acpi_object *obj;
304 status = wmi_evaluate_method(ASUS_WMI_MGMT_GUID, 1, method_id,
307 if (ACPI_FAILURE(status))
310 obj = (union acpi_object *)output.pointer;
311 if (obj && obj->type == ACPI_TYPE_INTEGER)
312 tmp = (u32) obj->integer.value;
320 if (ACPI_FAILURE(status))
323 if (tmp == ASUS_WMI_UNSUPPORTED_METHOD)
329 static int asus_wmi_evaluate_method_agfn(const struct acpi_buffer args)
331 struct acpi_buffer input;
337 * Copy to dma capable address otherwise memory corruption occurs as
338 * bios has to be able to access it.
340 input.pointer = kzalloc(args.length, GFP_DMA | GFP_KERNEL);
341 input.length = args.length;
344 phys_addr = virt_to_phys(input.pointer);
345 memcpy(input.pointer, args.pointer, args.length);
347 status = asus_wmi_evaluate_method(ASUS_WMI_METHODID_AGFN,
348 phys_addr, 0, &retval);
350 memcpy(args.pointer, input.pointer, args.length);
352 kfree(input.pointer);
359 static int asus_wmi_get_devstate(struct asus_wmi *asus, u32 dev_id, u32 *retval)
361 return asus_wmi_evaluate_method(asus->dsts_id, dev_id, 0, retval);
364 static int asus_wmi_set_devstate(u32 dev_id, u32 ctrl_param,
367 return asus_wmi_evaluate_method(ASUS_WMI_METHODID_DEVS, dev_id,
371 /* Helper for special devices with magic return codes */
372 static int asus_wmi_get_devstate_bits(struct asus_wmi *asus,
373 u32 dev_id, u32 mask)
378 err = asus_wmi_get_devstate(asus, dev_id, &retval);
383 if (!(retval & ASUS_WMI_DSTS_PRESENCE_BIT))
386 if (mask == ASUS_WMI_DSTS_STATUS_BIT) {
387 if (retval & ASUS_WMI_DSTS_UNKNOWN_BIT)
391 return retval & mask;
394 static int asus_wmi_get_devstate_simple(struct asus_wmi *asus, u32 dev_id)
396 return asus_wmi_get_devstate_bits(asus, dev_id,
397 ASUS_WMI_DSTS_STATUS_BIT);
404 * These functions actually update the LED's, and are called from a
405 * workqueue. By doing this as separate work rather than when the LED
406 * subsystem asks, we avoid messing with the Asus ACPI stuff during a
407 * potentially bad time, such as a timer interrupt.
409 static void tpd_led_update(struct work_struct *work)
412 struct asus_wmi *asus;
414 asus = container_of(work, struct asus_wmi, tpd_led_work);
416 ctrl_param = asus->tpd_led_wk;
417 asus_wmi_set_devstate(ASUS_WMI_DEVID_TOUCHPAD_LED, ctrl_param, NULL);
420 static void tpd_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, tpd_led);
427 asus->tpd_led_wk = !!value;
428 queue_work(asus->led_workqueue, &asus->tpd_led_work);
431 static int read_tpd_led_state(struct asus_wmi *asus)
433 return asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_TOUCHPAD_LED);
436 static enum led_brightness tpd_led_get(struct led_classdev *led_cdev)
438 struct asus_wmi *asus;
440 asus = container_of(led_cdev, struct asus_wmi, tpd_led);
442 return read_tpd_led_state(asus);
445 static void kbd_led_update(struct work_struct *work)
448 struct asus_wmi *asus;
450 asus = container_of(work, struct asus_wmi, kbd_led_work);
454 * bit 7: light on/off
456 if (asus->kbd_led_wk > 0)
457 ctrl_param = 0x80 | (asus->kbd_led_wk & 0x7F);
459 asus_wmi_set_devstate(ASUS_WMI_DEVID_KBD_BACKLIGHT, ctrl_param, NULL);
462 static int kbd_led_read(struct asus_wmi *asus, int *level, int *env)
468 * bit 7: light on/off
469 * bit 8-10: environment (0: dark, 1: normal, 2: light)
470 * bit 17: status unknown
472 retval = asus_wmi_get_devstate_bits(asus, ASUS_WMI_DEVID_KBD_BACKLIGHT,
475 /* Unknown status is considered as off */
476 if (retval == 0x8000)
481 *level = retval & 0x7F;
483 *env = (retval >> 8) & 0x7F;
490 static void kbd_led_set(struct led_classdev *led_cdev,
491 enum led_brightness value)
493 struct asus_wmi *asus;
495 asus = container_of(led_cdev, struct asus_wmi, kbd_led);
497 if (value > asus->kbd_led.max_brightness)
498 value = asus->kbd_led.max_brightness;
502 asus->kbd_led_wk = value;
503 queue_work(asus->led_workqueue, &asus->kbd_led_work);
506 static enum led_brightness kbd_led_get(struct led_classdev *led_cdev)
508 struct asus_wmi *asus;
511 asus = container_of(led_cdev, struct asus_wmi, kbd_led);
513 retval = kbd_led_read(asus, &value, NULL);
521 static int wlan_led_unknown_state(struct asus_wmi *asus)
525 asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_WIRELESS_LED, &result);
527 return result & ASUS_WMI_DSTS_UNKNOWN_BIT;
530 static int wlan_led_presence(struct asus_wmi *asus)
534 asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_WIRELESS_LED, &result);
536 return result & ASUS_WMI_DSTS_PRESENCE_BIT;
539 static void wlan_led_update(struct work_struct *work)
542 struct asus_wmi *asus;
544 asus = container_of(work, struct asus_wmi, wlan_led_work);
546 ctrl_param = asus->wlan_led_wk;
547 asus_wmi_set_devstate(ASUS_WMI_DEVID_WIRELESS_LED, ctrl_param, NULL);
550 static void wlan_led_set(struct led_classdev *led_cdev,
551 enum led_brightness value)
553 struct asus_wmi *asus;
555 asus = container_of(led_cdev, struct asus_wmi, wlan_led);
557 asus->wlan_led_wk = !!value;
558 queue_work(asus->led_workqueue, &asus->wlan_led_work);
561 static enum led_brightness wlan_led_get(struct led_classdev *led_cdev)
563 struct asus_wmi *asus;
566 asus = container_of(led_cdev, struct asus_wmi, wlan_led);
567 asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_WIRELESS_LED, &result);
569 return result & ASUS_WMI_DSTS_BRIGHTNESS_MASK;
572 static void asus_wmi_led_exit(struct asus_wmi *asus)
574 if (!IS_ERR_OR_NULL(asus->kbd_led.dev))
575 led_classdev_unregister(&asus->kbd_led);
576 if (!IS_ERR_OR_NULL(asus->tpd_led.dev))
577 led_classdev_unregister(&asus->tpd_led);
578 if (!IS_ERR_OR_NULL(asus->wlan_led.dev))
579 led_classdev_unregister(&asus->wlan_led);
580 if (asus->led_workqueue)
581 destroy_workqueue(asus->led_workqueue);
584 static int asus_wmi_led_init(struct asus_wmi *asus)
588 asus->led_workqueue = create_singlethread_workqueue("led_workqueue");
589 if (!asus->led_workqueue)
592 if (read_tpd_led_state(asus) >= 0) {
593 INIT_WORK(&asus->tpd_led_work, tpd_led_update);
595 asus->tpd_led.name = "asus::touchpad";
596 asus->tpd_led.brightness_set = tpd_led_set;
597 asus->tpd_led.brightness_get = tpd_led_get;
598 asus->tpd_led.max_brightness = 1;
600 rv = led_classdev_register(&asus->platform_device->dev,
606 led_val = kbd_led_read(asus, NULL, NULL);
608 INIT_WORK(&asus->kbd_led_work, kbd_led_update);
610 asus->kbd_led_wk = led_val;
611 asus->kbd_led.name = "asus::kbd_backlight";
612 asus->kbd_led.brightness_set = kbd_led_set;
613 asus->kbd_led.brightness_get = kbd_led_get;
614 asus->kbd_led.max_brightness = 3;
616 rv = led_classdev_register(&asus->platform_device->dev,
622 if (wlan_led_presence(asus) && (asus->driver->quirks->wapf > 0)) {
623 INIT_WORK(&asus->wlan_led_work, wlan_led_update);
625 asus->wlan_led.name = "asus::wlan";
626 asus->wlan_led.brightness_set = wlan_led_set;
627 if (!wlan_led_unknown_state(asus))
628 asus->wlan_led.brightness_get = wlan_led_get;
629 asus->wlan_led.flags = LED_CORE_SUSPENDRESUME;
630 asus->wlan_led.max_brightness = 1;
631 asus->wlan_led.default_trigger = "asus-wlan";
633 rv = led_classdev_register(&asus->platform_device->dev,
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) {
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 = hotplug_slot->private;
781 int result = asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WLAN);
790 static void asus_cleanup_pci_hotplug(struct hotplug_slot *hotplug_slot)
792 kfree(hotplug_slot->info);
796 static struct hotplug_slot_ops asus_hotplug_slot_ops = {
797 .owner = THIS_MODULE,
798 .get_adapter_status = asus_get_adapter_status,
799 .get_power_status = asus_get_adapter_status,
802 static void asus_hotplug_work(struct work_struct *work)
804 struct asus_wmi *asus;
806 asus = container_of(work, struct asus_wmi, hotplug_work);
807 asus_rfkill_hotplug(asus);
810 static int asus_setup_pci_hotplug(struct asus_wmi *asus)
813 struct pci_bus *bus = pci_find_bus(0, 1);
816 pr_err("Unable to find wifi PCI bus\n");
820 asus->hotplug_workqueue =
821 create_singlethread_workqueue("hotplug_workqueue");
822 if (!asus->hotplug_workqueue)
823 goto error_workqueue;
825 INIT_WORK(&asus->hotplug_work, asus_hotplug_work);
827 asus->hotplug_slot = kzalloc(sizeof(struct hotplug_slot), GFP_KERNEL);
828 if (!asus->hotplug_slot)
831 asus->hotplug_slot->info = kzalloc(sizeof(struct hotplug_slot_info),
833 if (!asus->hotplug_slot->info)
836 asus->hotplug_slot->private = asus;
837 asus->hotplug_slot->release = &asus_cleanup_pci_hotplug;
838 asus->hotplug_slot->ops = &asus_hotplug_slot_ops;
839 asus_get_adapter_status(asus->hotplug_slot,
840 &asus->hotplug_slot->info->adapter_status);
842 ret = pci_hp_register(asus->hotplug_slot, bus, 0, "asus-wifi");
844 pr_err("Unable to register hotplug slot - %d\n", ret);
851 kfree(asus->hotplug_slot->info);
853 kfree(asus->hotplug_slot);
854 asus->hotplug_slot = NULL;
856 destroy_workqueue(asus->hotplug_workqueue);
864 static int asus_rfkill_set(void *data, bool blocked)
866 struct asus_rfkill *priv = data;
867 u32 ctrl_param = !blocked;
868 u32 dev_id = priv->dev_id;
871 * If the user bit is set, BIOS can't set and record the wlan status,
872 * it will report the value read from id ASUS_WMI_DEVID_WLAN_LED
873 * while we query the wlan status through WMI(ASUS_WMI_DEVID_WLAN).
874 * So, we have to record wlan status in id ASUS_WMI_DEVID_WLAN_LED
875 * while setting the wlan status through WMI.
876 * This is also the behavior that windows app will do.
878 if ((dev_id == ASUS_WMI_DEVID_WLAN) &&
879 priv->asus->driver->wlan_ctrl_by_user)
880 dev_id = ASUS_WMI_DEVID_WLAN_LED;
882 return asus_wmi_set_devstate(dev_id, ctrl_param, NULL);
885 static void asus_rfkill_query(struct rfkill *rfkill, void *data)
887 struct asus_rfkill *priv = data;
890 result = asus_wmi_get_devstate_simple(priv->asus, priv->dev_id);
895 rfkill_set_sw_state(priv->rfkill, !result);
898 static int asus_rfkill_wlan_set(void *data, bool blocked)
900 struct asus_rfkill *priv = data;
901 struct asus_wmi *asus = priv->asus;
905 * This handler is enabled only if hotplug is enabled.
906 * In this case, the asus_wmi_set_devstate() will
907 * trigger a wmi notification and we need to wait
908 * this call to finish before being able to call
911 mutex_lock(&asus->wmi_lock);
912 ret = asus_rfkill_set(data, blocked);
913 mutex_unlock(&asus->wmi_lock);
917 static const struct rfkill_ops asus_rfkill_wlan_ops = {
918 .set_block = asus_rfkill_wlan_set,
919 .query = asus_rfkill_query,
922 static const struct rfkill_ops asus_rfkill_ops = {
923 .set_block = asus_rfkill_set,
924 .query = asus_rfkill_query,
927 static int asus_new_rfkill(struct asus_wmi *asus,
928 struct asus_rfkill *arfkill,
929 const char *name, enum rfkill_type type, int dev_id)
931 int result = asus_wmi_get_devstate_simple(asus, dev_id);
932 struct rfkill **rfkill = &arfkill->rfkill;
937 arfkill->dev_id = dev_id;
938 arfkill->asus = asus;
940 if (dev_id == ASUS_WMI_DEVID_WLAN &&
941 asus->driver->quirks->hotplug_wireless)
942 *rfkill = rfkill_alloc(name, &asus->platform_device->dev, type,
943 &asus_rfkill_wlan_ops, arfkill);
945 *rfkill = rfkill_alloc(name, &asus->platform_device->dev, type,
946 &asus_rfkill_ops, arfkill);
951 if ((dev_id == ASUS_WMI_DEVID_WLAN) &&
952 (asus->driver->quirks->wapf > 0))
953 rfkill_set_led_trigger_name(*rfkill, "asus-wlan");
955 rfkill_init_sw_state(*rfkill, !result);
956 result = rfkill_register(*rfkill);
958 rfkill_destroy(*rfkill);
965 static void asus_wmi_rfkill_exit(struct asus_wmi *asus)
967 asus_unregister_rfkill_notifier(asus, "\\_SB.PCI0.P0P5");
968 asus_unregister_rfkill_notifier(asus, "\\_SB.PCI0.P0P6");
969 asus_unregister_rfkill_notifier(asus, "\\_SB.PCI0.P0P7");
970 if (asus->wlan.rfkill) {
971 rfkill_unregister(asus->wlan.rfkill);
972 rfkill_destroy(asus->wlan.rfkill);
973 asus->wlan.rfkill = NULL;
976 * Refresh pci hotplug in case the rfkill state was changed after
977 * asus_unregister_rfkill_notifier()
979 asus_rfkill_hotplug(asus);
980 if (asus->hotplug_slot)
981 pci_hp_deregister(asus->hotplug_slot);
982 if (asus->hotplug_workqueue)
983 destroy_workqueue(asus->hotplug_workqueue);
985 if (asus->bluetooth.rfkill) {
986 rfkill_unregister(asus->bluetooth.rfkill);
987 rfkill_destroy(asus->bluetooth.rfkill);
988 asus->bluetooth.rfkill = NULL;
990 if (asus->wimax.rfkill) {
991 rfkill_unregister(asus->wimax.rfkill);
992 rfkill_destroy(asus->wimax.rfkill);
993 asus->wimax.rfkill = NULL;
995 if (asus->wwan3g.rfkill) {
996 rfkill_unregister(asus->wwan3g.rfkill);
997 rfkill_destroy(asus->wwan3g.rfkill);
998 asus->wwan3g.rfkill = NULL;
1000 if (asus->gps.rfkill) {
1001 rfkill_unregister(asus->gps.rfkill);
1002 rfkill_destroy(asus->gps.rfkill);
1003 asus->gps.rfkill = NULL;
1005 if (asus->uwb.rfkill) {
1006 rfkill_unregister(asus->uwb.rfkill);
1007 rfkill_destroy(asus->uwb.rfkill);
1008 asus->uwb.rfkill = NULL;
1012 static int asus_wmi_rfkill_init(struct asus_wmi *asus)
1016 mutex_init(&asus->hotplug_lock);
1017 mutex_init(&asus->wmi_lock);
1019 result = asus_new_rfkill(asus, &asus->wlan, "asus-wlan",
1020 RFKILL_TYPE_WLAN, ASUS_WMI_DEVID_WLAN);
1022 if (result && result != -ENODEV)
1025 result = asus_new_rfkill(asus, &asus->bluetooth,
1026 "asus-bluetooth", RFKILL_TYPE_BLUETOOTH,
1027 ASUS_WMI_DEVID_BLUETOOTH);
1029 if (result && result != -ENODEV)
1032 result = asus_new_rfkill(asus, &asus->wimax, "asus-wimax",
1033 RFKILL_TYPE_WIMAX, ASUS_WMI_DEVID_WIMAX);
1035 if (result && result != -ENODEV)
1038 result = asus_new_rfkill(asus, &asus->wwan3g, "asus-wwan3g",
1039 RFKILL_TYPE_WWAN, ASUS_WMI_DEVID_WWAN3G);
1041 if (result && result != -ENODEV)
1044 result = asus_new_rfkill(asus, &asus->gps, "asus-gps",
1045 RFKILL_TYPE_GPS, ASUS_WMI_DEVID_GPS);
1047 if (result && result != -ENODEV)
1050 result = asus_new_rfkill(asus, &asus->uwb, "asus-uwb",
1051 RFKILL_TYPE_UWB, ASUS_WMI_DEVID_UWB);
1053 if (result && result != -ENODEV)
1056 if (!asus->driver->quirks->hotplug_wireless)
1059 result = asus_setup_pci_hotplug(asus);
1061 * If we get -EBUSY then something else is handling the PCI hotplug -
1062 * don't fail in this case
1064 if (result == -EBUSY)
1067 asus_register_rfkill_notifier(asus, "\\_SB.PCI0.P0P5");
1068 asus_register_rfkill_notifier(asus, "\\_SB.PCI0.P0P6");
1069 asus_register_rfkill_notifier(asus, "\\_SB.PCI0.P0P7");
1071 * Refresh pci hotplug in case the rfkill state was changed during
1074 asus_rfkill_hotplug(asus);
1077 if (result && result != -ENODEV)
1078 asus_wmi_rfkill_exit(asus);
1080 if (result == -ENODEV)
1086 static void asus_wmi_set_xusb2pr(struct asus_wmi *asus)
1088 struct pci_dev *xhci_pdev;
1089 u32 orig_ports_available;
1090 u32 ports_available = asus->driver->quirks->xusb2pr;
1092 xhci_pdev = pci_get_device(PCI_VENDOR_ID_INTEL,
1093 PCI_DEVICE_ID_INTEL_LYNXPOINT_LP_XHCI,
1099 pci_read_config_dword(xhci_pdev, USB_INTEL_XUSB2PR,
1100 &orig_ports_available);
1102 pci_write_config_dword(xhci_pdev, USB_INTEL_XUSB2PR,
1103 cpu_to_le32(ports_available));
1105 pr_info("set USB_INTEL_XUSB2PR old: 0x%04x, new: 0x%04x\n",
1106 orig_ports_available, ports_available);
1112 static int asus_hwmon_agfn_fan_speed_read(struct asus_wmi *asus, int fan,
1115 struct fan_args args = {
1116 .agfn.len = sizeof(args),
1117 .agfn.mfun = ASUS_FAN_MFUN,
1118 .agfn.sfun = ASUS_FAN_SFUN_READ,
1122 struct acpi_buffer input = { (acpi_size) sizeof(args), &args };
1128 status = asus_wmi_evaluate_method_agfn(input);
1130 if (status || args.agfn.err)
1134 *speed = args.speed;
1139 static int asus_hwmon_agfn_fan_speed_write(struct asus_wmi *asus, int fan,
1142 struct fan_args args = {
1143 .agfn.len = sizeof(args),
1144 .agfn.mfun = ASUS_FAN_MFUN,
1145 .agfn.sfun = ASUS_FAN_SFUN_WRITE,
1147 .speed = speed ? *speed : 0,
1149 struct acpi_buffer input = { (acpi_size) sizeof(args), &args };
1152 /* 1: for setting 1st fan's speed 0: setting auto mode */
1153 if (fan != 1 && fan != 0)
1156 status = asus_wmi_evaluate_method_agfn(input);
1158 if (status || args.agfn.err)
1161 if (speed && fan == 1)
1162 asus->asus_hwmon_pwm = *speed;
1168 * Check if we can read the speed of one fan. If true we assume we can also
1171 static int asus_hwmon_get_fan_number(struct asus_wmi *asus, int *num_fans)
1178 status = asus_hwmon_agfn_fan_speed_read(asus, 1, &speed);
1185 static int asus_hwmon_fan_set_auto(struct asus_wmi *asus)
1189 status = asus_hwmon_agfn_fan_speed_write(asus, 0, NULL);
1193 asus->asus_hwmon_fan_manual_mode = false;
1198 static int asus_hwmon_fan_rpm_show(struct device *dev, int fan)
1200 struct asus_wmi *asus = dev_get_drvdata(dev);
1204 /* no speed readable on manual mode */
1205 if (asus->asus_hwmon_fan_manual_mode)
1208 ret = asus_hwmon_agfn_fan_speed_read(asus, fan+1, &value);
1210 pr_warn("reading fan speed failed: %d\n", ret);
1217 static void asus_hwmon_pwm_show(struct asus_wmi *asus, int fan, int *value)
1221 if (asus->asus_hwmon_pwm >= 0) {
1222 *value = asus->asus_hwmon_pwm;
1226 err = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_FAN_CTRL, value);
1232 if (*value == 1) /* Low Speed */
1234 else if (*value == 2)
1236 else if (*value == 3)
1239 pr_err("Unknown fan speed %#x\n", *value);
1244 static ssize_t pwm1_show(struct device *dev,
1245 struct device_attribute *attr,
1248 struct asus_wmi *asus = dev_get_drvdata(dev);
1251 asus_hwmon_pwm_show(asus, 0, &value);
1253 return sprintf(buf, "%d\n", value);
1256 static ssize_t pwm1_store(struct device *dev,
1257 struct device_attribute *attr,
1258 const char *buf, size_t count) {
1259 struct asus_wmi *asus = dev_get_drvdata(dev);
1264 ret = kstrtouint(buf, 10, &value);
1269 value = clamp(value, 0, 255);
1271 state = asus_hwmon_agfn_fan_speed_write(asus, 1, &value);
1273 pr_warn("Setting fan speed failed: %d\n", state);
1275 asus->asus_hwmon_fan_manual_mode = true;
1280 static ssize_t fan1_input_show(struct device *dev,
1281 struct device_attribute *attr,
1284 int value = asus_hwmon_fan_rpm_show(dev, 0);
1286 return sprintf(buf, "%d\n", value < 0 ? -1 : value*100);
1290 static ssize_t pwm1_enable_show(struct device *dev,
1291 struct device_attribute *attr,
1294 struct asus_wmi *asus = dev_get_drvdata(dev);
1296 if (asus->asus_hwmon_fan_manual_mode)
1297 return sprintf(buf, "%d\n", ASUS_FAN_CTRL_MANUAL);
1299 return sprintf(buf, "%d\n", ASUS_FAN_CTRL_AUTO);
1302 static ssize_t pwm1_enable_store(struct device *dev,
1303 struct device_attribute *attr,
1304 const char *buf, size_t count)
1306 struct asus_wmi *asus = dev_get_drvdata(dev);
1311 ret = kstrtouint(buf, 10, &state);
1316 if (state == ASUS_FAN_CTRL_MANUAL)
1317 asus->asus_hwmon_fan_manual_mode = true;
1319 status = asus_hwmon_fan_set_auto(asus);
1327 static ssize_t fan1_label_show(struct device *dev,
1328 struct device_attribute *attr,
1331 return sprintf(buf, "%s\n", ASUS_FAN_DESC);
1334 static ssize_t asus_hwmon_temp1(struct device *dev,
1335 struct device_attribute *attr,
1338 struct asus_wmi *asus = dev_get_drvdata(dev);
1342 err = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_THERMAL_CTRL, &value);
1347 value = DECI_KELVIN_TO_CELSIUS((value & 0xFFFF)) * 1000;
1349 return sprintf(buf, "%d\n", value);
1353 static DEVICE_ATTR_RW(pwm1);
1354 static DEVICE_ATTR_RW(pwm1_enable);
1355 static DEVICE_ATTR_RO(fan1_input);
1356 static DEVICE_ATTR_RO(fan1_label);
1359 static DEVICE_ATTR(temp1_input, S_IRUGO, asus_hwmon_temp1, NULL);
1361 static struct attribute *hwmon_attributes[] = {
1362 &dev_attr_pwm1.attr,
1363 &dev_attr_pwm1_enable.attr,
1364 &dev_attr_fan1_input.attr,
1365 &dev_attr_fan1_label.attr,
1367 &dev_attr_temp1_input.attr,
1371 static umode_t asus_hwmon_sysfs_is_visible(struct kobject *kobj,
1372 struct attribute *attr, int idx)
1374 struct device *dev = container_of(kobj, struct device, kobj);
1375 struct platform_device *pdev = to_platform_device(dev->parent);
1376 struct asus_wmi *asus = platform_get_drvdata(pdev);
1379 u32 value = ASUS_WMI_UNSUPPORTED_METHOD;
1382 if (attr == &dev_attr_pwm1.attr)
1383 dev_id = ASUS_WMI_DEVID_FAN_CTRL;
1384 else if (attr == &dev_attr_temp1_input.attr)
1385 dev_id = ASUS_WMI_DEVID_THERMAL_CTRL;
1388 if (attr == &dev_attr_fan1_input.attr
1389 || attr == &dev_attr_fan1_label.attr
1390 || attr == &dev_attr_pwm1.attr
1391 || attr == &dev_attr_pwm1_enable.attr) {
1396 int err = asus_wmi_get_devstate(asus, dev_id, &value);
1398 if (err < 0 && fan_attr == -1)
1399 return 0; /* can't return negative here */
1402 if (dev_id == ASUS_WMI_DEVID_FAN_CTRL) {
1404 * We need to find a better way, probably using sfun,
1406 * Currently we disable it if:
1407 * - ASUS_WMI_UNSUPPORTED_METHOD is returned
1408 * - reverved bits are non-zero
1409 * - sfun and presence bit are not set
1411 if (value == ASUS_WMI_UNSUPPORTED_METHOD || value & 0xFFF80000
1412 || (!asus->sfun && !(value & ASUS_WMI_DSTS_PRESENCE_BIT)))
1415 ok = fan_attr <= asus->asus_hwmon_num_fans;
1416 } else if (dev_id == ASUS_WMI_DEVID_THERMAL_CTRL) {
1417 /* If value is zero, something is clearly wrong */
1420 } else if (fan_attr <= asus->asus_hwmon_num_fans && fan_attr != -1) {
1426 return ok ? attr->mode : 0;
1429 static struct attribute_group hwmon_attribute_group = {
1430 .is_visible = asus_hwmon_sysfs_is_visible,
1431 .attrs = hwmon_attributes
1433 __ATTRIBUTE_GROUPS(hwmon_attribute);
1435 static int asus_wmi_hwmon_init(struct asus_wmi *asus)
1437 struct device *hwmon;
1439 hwmon = hwmon_device_register_with_groups(&asus->platform_device->dev,
1441 hwmon_attribute_groups);
1442 if (IS_ERR(hwmon)) {
1443 pr_err("Could not register asus hwmon device\n");
1444 return PTR_ERR(hwmon);
1452 static int read_backlight_power(struct asus_wmi *asus)
1455 if (asus->driver->quirks->store_backlight_power)
1456 ret = !asus->driver->panel_power;
1458 ret = asus_wmi_get_devstate_simple(asus,
1459 ASUS_WMI_DEVID_BACKLIGHT);
1464 return ret ? FB_BLANK_UNBLANK : FB_BLANK_POWERDOWN;
1467 static int read_brightness_max(struct asus_wmi *asus)
1472 err = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_BRIGHTNESS, &retval);
1477 retval = retval & ASUS_WMI_DSTS_MAX_BRIGTH_MASK;
1486 static int read_brightness(struct backlight_device *bd)
1488 struct asus_wmi *asus = bl_get_data(bd);
1492 err = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_BRIGHTNESS, &retval);
1497 return retval & ASUS_WMI_DSTS_BRIGHTNESS_MASK;
1500 static u32 get_scalar_command(struct backlight_device *bd)
1502 struct asus_wmi *asus = bl_get_data(bd);
1505 if ((asus->driver->brightness < bd->props.brightness) ||
1506 bd->props.brightness == bd->props.max_brightness)
1507 ctrl_param = 0x00008001;
1508 else if ((asus->driver->brightness > bd->props.brightness) ||
1509 bd->props.brightness == 0)
1510 ctrl_param = 0x00008000;
1512 asus->driver->brightness = bd->props.brightness;
1517 static int update_bl_status(struct backlight_device *bd)
1519 struct asus_wmi *asus = bl_get_data(bd);
1523 power = read_backlight_power(asus);
1524 if (power != -ENODEV && bd->props.power != power) {
1525 ctrl_param = !!(bd->props.power == FB_BLANK_UNBLANK);
1526 err = asus_wmi_set_devstate(ASUS_WMI_DEVID_BACKLIGHT,
1528 if (asus->driver->quirks->store_backlight_power)
1529 asus->driver->panel_power = bd->props.power;
1531 /* When using scalar brightness, updating the brightness
1532 * will mess with the backlight power */
1533 if (asus->driver->quirks->scalar_panel_brightness)
1537 if (asus->driver->quirks->scalar_panel_brightness)
1538 ctrl_param = get_scalar_command(bd);
1540 ctrl_param = bd->props.brightness;
1542 err = asus_wmi_set_devstate(ASUS_WMI_DEVID_BRIGHTNESS,
1548 static const struct backlight_ops asus_wmi_bl_ops = {
1549 .get_brightness = read_brightness,
1550 .update_status = update_bl_status,
1553 static int asus_wmi_backlight_notify(struct asus_wmi *asus, int code)
1555 struct backlight_device *bd = asus->backlight_device;
1556 int old = bd->props.brightness;
1559 if (code >= NOTIFY_BRNUP_MIN && code <= NOTIFY_BRNUP_MAX)
1560 new = code - NOTIFY_BRNUP_MIN + 1;
1561 else if (code >= NOTIFY_BRNDOWN_MIN && code <= NOTIFY_BRNDOWN_MAX)
1562 new = code - NOTIFY_BRNDOWN_MIN;
1564 bd->props.brightness = new;
1565 backlight_update_status(bd);
1566 backlight_force_update(bd, BACKLIGHT_UPDATE_HOTKEY);
1571 static int asus_wmi_backlight_init(struct asus_wmi *asus)
1573 struct backlight_device *bd;
1574 struct backlight_properties props;
1578 max = read_brightness_max(asus);
1582 power = read_backlight_power(asus);
1584 if (power == -ENODEV)
1585 power = FB_BLANK_UNBLANK;
1589 memset(&props, 0, sizeof(struct backlight_properties));
1590 props.type = BACKLIGHT_PLATFORM;
1591 props.max_brightness = max;
1592 bd = backlight_device_register(asus->driver->name,
1593 &asus->platform_device->dev, asus,
1594 &asus_wmi_bl_ops, &props);
1596 pr_err("Could not register backlight device\n");
1600 asus->backlight_device = bd;
1602 if (asus->driver->quirks->store_backlight_power)
1603 asus->driver->panel_power = power;
1605 bd->props.brightness = read_brightness(bd);
1606 bd->props.power = power;
1607 backlight_update_status(bd);
1609 asus->driver->brightness = bd->props.brightness;
1614 static void asus_wmi_backlight_exit(struct asus_wmi *asus)
1616 backlight_device_unregister(asus->backlight_device);
1618 asus->backlight_device = NULL;
1621 static int is_display_toggle(int code)
1623 /* display toggle keys */
1624 if ((code >= 0x61 && code <= 0x67) ||
1625 (code >= 0x8c && code <= 0x93) ||
1626 (code >= 0xa0 && code <= 0xa7) ||
1627 (code >= 0xd0 && code <= 0xd5))
1633 static void asus_wmi_notify(u32 value, void *context)
1635 struct asus_wmi *asus = context;
1636 struct acpi_buffer response = { ACPI_ALLOCATE_BUFFER, NULL };
1637 union acpi_object *obj;
1641 unsigned int key_value = 1;
1642 bool autorelease = 1;
1644 status = wmi_get_event_data(value, &response);
1645 if (status != AE_OK) {
1646 pr_err("bad event status 0x%x\n", status);
1650 obj = (union acpi_object *)response.pointer;
1652 if (!obj || obj->type != ACPI_TYPE_INTEGER)
1655 code = obj->integer.value;
1658 if (asus->driver->key_filter) {
1659 asus->driver->key_filter(asus->driver, &code, &key_value,
1661 if (code == ASUS_WMI_KEY_IGNORE)
1665 if (code >= NOTIFY_BRNUP_MIN && code <= NOTIFY_BRNUP_MAX)
1666 code = ASUS_WMI_BRN_UP;
1667 else if (code >= NOTIFY_BRNDOWN_MIN &&
1668 code <= NOTIFY_BRNDOWN_MAX)
1669 code = ASUS_WMI_BRN_DOWN;
1671 if (code == ASUS_WMI_BRN_DOWN || code == ASUS_WMI_BRN_UP) {
1672 if (acpi_video_get_backlight_type() == acpi_backlight_vendor) {
1673 asus_wmi_backlight_notify(asus, orig_code);
1678 if (is_display_toggle(code) &&
1679 asus->driver->quirks->no_display_toggle)
1682 if (!sparse_keymap_report_event(asus->inputdev, code,
1683 key_value, autorelease))
1684 pr_info("Unknown key %x pressed\n", code);
1693 static int parse_arg(const char *buf, unsigned long count, int *val)
1697 if (sscanf(buf, "%i", val) != 1)
1702 static ssize_t store_sys_wmi(struct asus_wmi *asus, int devid,
1703 const char *buf, size_t count)
1708 value = asus_wmi_get_devstate_simple(asus, devid);
1712 rv = parse_arg(buf, count, &value);
1713 err = asus_wmi_set_devstate(devid, value, &retval);
1721 static ssize_t show_sys_wmi(struct asus_wmi *asus, int devid, char *buf)
1723 int value = asus_wmi_get_devstate_simple(asus, devid);
1728 return sprintf(buf, "%d\n", value);
1731 #define ASUS_WMI_CREATE_DEVICE_ATTR(_name, _mode, _cm) \
1732 static ssize_t show_##_name(struct device *dev, \
1733 struct device_attribute *attr, \
1736 struct asus_wmi *asus = dev_get_drvdata(dev); \
1738 return show_sys_wmi(asus, _cm, buf); \
1740 static ssize_t store_##_name(struct device *dev, \
1741 struct device_attribute *attr, \
1742 const char *buf, size_t count) \
1744 struct asus_wmi *asus = dev_get_drvdata(dev); \
1746 return store_sys_wmi(asus, _cm, buf, count); \
1748 static struct device_attribute dev_attr_##_name = { \
1750 .name = __stringify(_name), \
1752 .show = show_##_name, \
1753 .store = store_##_name, \
1756 ASUS_WMI_CREATE_DEVICE_ATTR(touchpad, 0644, ASUS_WMI_DEVID_TOUCHPAD);
1757 ASUS_WMI_CREATE_DEVICE_ATTR(camera, 0644, ASUS_WMI_DEVID_CAMERA);
1758 ASUS_WMI_CREATE_DEVICE_ATTR(cardr, 0644, ASUS_WMI_DEVID_CARDREADER);
1759 ASUS_WMI_CREATE_DEVICE_ATTR(lid_resume, 0644, ASUS_WMI_DEVID_LID_RESUME);
1760 ASUS_WMI_CREATE_DEVICE_ATTR(als_enable, 0644, ASUS_WMI_DEVID_ALS_ENABLE);
1762 static ssize_t store_cpufv(struct device *dev, struct device_attribute *attr,
1763 const char *buf, size_t count)
1767 if (!count || sscanf(buf, "%i", &value) != 1)
1769 if (value < 0 || value > 2)
1772 rv = asus_wmi_evaluate_method(ASUS_WMI_METHODID_CFVS, value, 0, NULL);
1779 static DEVICE_ATTR(cpufv, S_IRUGO | S_IWUSR, NULL, store_cpufv);
1781 static struct attribute *platform_attributes[] = {
1782 &dev_attr_cpufv.attr,
1783 &dev_attr_camera.attr,
1784 &dev_attr_cardr.attr,
1785 &dev_attr_touchpad.attr,
1786 &dev_attr_lid_resume.attr,
1787 &dev_attr_als_enable.attr,
1791 static umode_t asus_sysfs_is_visible(struct kobject *kobj,
1792 struct attribute *attr, int idx)
1794 struct device *dev = container_of(kobj, struct device, kobj);
1795 struct platform_device *pdev = to_platform_device(dev);
1796 struct asus_wmi *asus = platform_get_drvdata(pdev);
1800 if (attr == &dev_attr_camera.attr)
1801 devid = ASUS_WMI_DEVID_CAMERA;
1802 else if (attr == &dev_attr_cardr.attr)
1803 devid = ASUS_WMI_DEVID_CARDREADER;
1804 else if (attr == &dev_attr_touchpad.attr)
1805 devid = ASUS_WMI_DEVID_TOUCHPAD;
1806 else if (attr == &dev_attr_lid_resume.attr)
1807 devid = ASUS_WMI_DEVID_LID_RESUME;
1808 else if (attr == &dev_attr_als_enable.attr)
1809 devid = ASUS_WMI_DEVID_ALS_ENABLE;
1812 ok = !(asus_wmi_get_devstate_simple(asus, devid) < 0);
1814 return ok ? attr->mode : 0;
1817 static struct attribute_group platform_attribute_group = {
1818 .is_visible = asus_sysfs_is_visible,
1819 .attrs = platform_attributes
1822 static void asus_wmi_sysfs_exit(struct platform_device *device)
1824 sysfs_remove_group(&device->dev.kobj, &platform_attribute_group);
1827 static int asus_wmi_sysfs_init(struct platform_device *device)
1829 return sysfs_create_group(&device->dev.kobj, &platform_attribute_group);
1835 static int asus_wmi_platform_init(struct asus_wmi *asus)
1839 /* INIT enable hotkeys on some models */
1840 if (!asus_wmi_evaluate_method(ASUS_WMI_METHODID_INIT, 0, 0, &rv))
1841 pr_info("Initialization: %#x\n", rv);
1843 /* We don't know yet what to do with this version... */
1844 if (!asus_wmi_evaluate_method(ASUS_WMI_METHODID_SPEC, 0, 0x9, &rv)) {
1845 pr_info("BIOS WMI version: %d.%d\n", rv >> 16, rv & 0xFF);
1850 * The SFUN method probably allows the original driver to get the list
1851 * of features supported by a given model. For now, 0x0100 or 0x0800
1852 * bit signifies that the laptop is equipped with a Wi-Fi MiniPCI card.
1853 * The significance of others is yet to be found.
1855 if (!asus_wmi_evaluate_method(ASUS_WMI_METHODID_SFUN, 0, 0, &rv)) {
1856 pr_info("SFUN value: %#x\n", rv);
1861 * Eee PC and Notebooks seems to have different method_id for DSTS,
1862 * but it may also be related to the BIOS's SPEC.
1863 * Note, on most Eeepc, there is no way to check if a method exist
1864 * or note, while on notebooks, they returns 0xFFFFFFFE on failure,
1865 * but once again, SPEC may probably be used for that kind of things.
1867 if (!asus_wmi_evaluate_method(ASUS_WMI_METHODID_DSTS, 0, 0, NULL))
1868 asus->dsts_id = ASUS_WMI_METHODID_DSTS;
1870 asus->dsts_id = ASUS_WMI_METHODID_DSTS2;
1872 /* CWAP allow to define the behavior of the Fn+F2 key,
1873 * this method doesn't seems to be present on Eee PCs */
1874 if (asus->driver->quirks->wapf >= 0)
1875 asus_wmi_set_devstate(ASUS_WMI_DEVID_CWAP,
1876 asus->driver->quirks->wapf, NULL);
1878 return asus_wmi_sysfs_init(asus->platform_device);
1881 static void asus_wmi_platform_exit(struct asus_wmi *asus)
1883 asus_wmi_sysfs_exit(asus->platform_device);
1889 struct asus_wmi_debugfs_node {
1890 struct asus_wmi *asus;
1892 int (*show) (struct seq_file *m, void *data);
1895 static int show_dsts(struct seq_file *m, void *data)
1897 struct asus_wmi *asus = m->private;
1901 err = asus_wmi_get_devstate(asus, asus->debug.dev_id, &retval);
1906 seq_printf(m, "DSTS(%#x) = %#x\n", asus->debug.dev_id, retval);
1911 static int show_devs(struct seq_file *m, void *data)
1913 struct asus_wmi *asus = m->private;
1917 err = asus_wmi_set_devstate(asus->debug.dev_id, asus->debug.ctrl_param,
1923 seq_printf(m, "DEVS(%#x, %#x) = %#x\n", asus->debug.dev_id,
1924 asus->debug.ctrl_param, retval);
1929 static int show_call(struct seq_file *m, void *data)
1931 struct asus_wmi *asus = m->private;
1932 struct bios_args args = {
1933 .arg0 = asus->debug.dev_id,
1934 .arg1 = asus->debug.ctrl_param,
1936 struct acpi_buffer input = { (acpi_size) sizeof(args), &args };
1937 struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
1938 union acpi_object *obj;
1941 status = wmi_evaluate_method(ASUS_WMI_MGMT_GUID,
1942 1, asus->debug.method_id,
1945 if (ACPI_FAILURE(status))
1948 obj = (union acpi_object *)output.pointer;
1949 if (obj && obj->type == ACPI_TYPE_INTEGER)
1950 seq_printf(m, "%#x(%#x, %#x) = %#x\n", asus->debug.method_id,
1951 asus->debug.dev_id, asus->debug.ctrl_param,
1952 (u32) obj->integer.value);
1954 seq_printf(m, "%#x(%#x, %#x) = t:%d\n", asus->debug.method_id,
1955 asus->debug.dev_id, asus->debug.ctrl_param,
1956 obj ? obj->type : -1);
1963 static struct asus_wmi_debugfs_node asus_wmi_debug_files[] = {
1964 {NULL, "devs", show_devs},
1965 {NULL, "dsts", show_dsts},
1966 {NULL, "call", show_call},
1969 static int asus_wmi_debugfs_open(struct inode *inode, struct file *file)
1971 struct asus_wmi_debugfs_node *node = inode->i_private;
1973 return single_open(file, node->show, node->asus);
1976 static const struct file_operations asus_wmi_debugfs_io_ops = {
1977 .owner = THIS_MODULE,
1978 .open = asus_wmi_debugfs_open,
1980 .llseek = seq_lseek,
1981 .release = single_release,
1984 static void asus_wmi_debugfs_exit(struct asus_wmi *asus)
1986 debugfs_remove_recursive(asus->debug.root);
1989 static int asus_wmi_debugfs_init(struct asus_wmi *asus)
1991 struct dentry *dent;
1994 asus->debug.root = debugfs_create_dir(asus->driver->name, NULL);
1995 if (!asus->debug.root) {
1996 pr_err("failed to create debugfs directory\n");
2000 dent = debugfs_create_x32("method_id", S_IRUGO | S_IWUSR,
2001 asus->debug.root, &asus->debug.method_id);
2005 dent = debugfs_create_x32("dev_id", S_IRUGO | S_IWUSR,
2006 asus->debug.root, &asus->debug.dev_id);
2010 dent = debugfs_create_x32("ctrl_param", S_IRUGO | S_IWUSR,
2011 asus->debug.root, &asus->debug.ctrl_param);
2015 for (i = 0; i < ARRAY_SIZE(asus_wmi_debug_files); i++) {
2016 struct asus_wmi_debugfs_node *node = &asus_wmi_debug_files[i];
2019 dent = debugfs_create_file(node->name, S_IFREG | S_IRUGO,
2020 asus->debug.root, node,
2021 &asus_wmi_debugfs_io_ops);
2023 pr_err("failed to create debug file: %s\n", node->name);
2031 asus_wmi_debugfs_exit(asus);
2035 static int asus_wmi_fan_init(struct asus_wmi *asus)
2039 asus->asus_hwmon_pwm = -1;
2040 asus->asus_hwmon_num_fans = -1;
2041 asus->asus_hwmon_fan_manual_mode = false;
2043 status = asus_hwmon_get_fan_number(asus, &asus->asus_hwmon_num_fans);
2045 asus->asus_hwmon_num_fans = 0;
2046 pr_warn("Could not determine number of fans: %d\n", status);
2050 pr_info("Number of fans: %d\n", asus->asus_hwmon_num_fans);
2057 static int asus_wmi_add(struct platform_device *pdev)
2059 struct platform_driver *pdrv = to_platform_driver(pdev->dev.driver);
2060 struct asus_wmi_driver *wdrv = to_asus_wmi_driver(pdrv);
2061 struct asus_wmi *asus;
2062 const char *chassis_type;
2067 asus = kzalloc(sizeof(struct asus_wmi), GFP_KERNEL);
2071 asus->driver = wdrv;
2072 asus->platform_device = pdev;
2073 wdrv->platform_device = pdev;
2074 platform_set_drvdata(asus->platform_device, asus);
2076 if (wdrv->detect_quirks)
2077 wdrv->detect_quirks(asus->driver);
2079 err = asus_wmi_platform_init(asus);
2083 err = asus_wmi_input_init(asus);
2087 err = asus_wmi_fan_init(asus); /* probably no problems on error */
2088 asus_hwmon_fan_set_auto(asus);
2090 err = asus_wmi_hwmon_init(asus);
2094 err = asus_wmi_led_init(asus);
2098 if (!asus->driver->quirks->no_rfkill) {
2099 err = asus_wmi_rfkill_init(asus);
2104 /* Some Asus desktop boards export an acpi-video backlight interface,
2105 stop this from showing up */
2106 chassis_type = dmi_get_system_info(DMI_CHASSIS_TYPE);
2107 if (chassis_type && !strcmp(chassis_type, "3"))
2108 acpi_video_set_dmi_backlight_type(acpi_backlight_vendor);
2110 if (asus->driver->quirks->wmi_backlight_power)
2111 acpi_video_set_dmi_backlight_type(acpi_backlight_vendor);
2113 if (asus->driver->quirks->wmi_backlight_native)
2114 acpi_video_set_dmi_backlight_type(acpi_backlight_native);
2116 if (asus->driver->quirks->xusb2pr)
2117 asus_wmi_set_xusb2pr(asus);
2119 if (acpi_video_get_backlight_type() == acpi_backlight_vendor) {
2120 err = asus_wmi_backlight_init(asus);
2121 if (err && err != -ENODEV)
2122 goto fail_backlight;
2125 status = wmi_install_notify_handler(asus->driver->event_guid,
2126 asus_wmi_notify, asus);
2127 if (ACPI_FAILURE(status)) {
2128 pr_err("Unable to register notify handler - %d\n", status);
2130 goto fail_wmi_handler;
2133 err = asus_wmi_debugfs_init(asus);
2137 asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_WLAN, &result);
2138 if (result & (ASUS_WMI_DSTS_PRESENCE_BIT | ASUS_WMI_DSTS_USER_BIT))
2139 asus->driver->wlan_ctrl_by_user = 1;
2144 wmi_remove_notify_handler(asus->driver->event_guid);
2146 asus_wmi_backlight_exit(asus);
2148 asus_wmi_rfkill_exit(asus);
2150 asus_wmi_led_exit(asus);
2153 asus_wmi_input_exit(asus);
2155 asus_wmi_platform_exit(asus);
2161 static int asus_wmi_remove(struct platform_device *device)
2163 struct asus_wmi *asus;
2165 asus = platform_get_drvdata(device);
2166 wmi_remove_notify_handler(asus->driver->event_guid);
2167 asus_wmi_backlight_exit(asus);
2168 asus_wmi_input_exit(asus);
2169 asus_wmi_led_exit(asus);
2170 asus_wmi_rfkill_exit(asus);
2171 asus_wmi_debugfs_exit(asus);
2172 asus_wmi_platform_exit(asus);
2173 asus_hwmon_fan_set_auto(asus);
2180 * Platform driver - hibernate/resume callbacks
2182 static int asus_hotk_thaw(struct device *device)
2184 struct asus_wmi *asus = dev_get_drvdata(device);
2186 if (asus->wlan.rfkill) {
2190 * Work around bios bug - acpi _PTS turns off the wireless led
2191 * during suspend. Normally it restores it on resume, but
2192 * we should kick it ourselves in case hibernation is aborted.
2194 wlan = asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WLAN);
2195 asus_wmi_set_devstate(ASUS_WMI_DEVID_WLAN, wlan, NULL);
2201 static int asus_hotk_resume(struct device *device)
2203 struct asus_wmi *asus = dev_get_drvdata(device);
2205 if (!IS_ERR_OR_NULL(asus->kbd_led.dev))
2206 queue_work(asus->led_workqueue, &asus->kbd_led_work);
2211 static int asus_hotk_restore(struct device *device)
2213 struct asus_wmi *asus = dev_get_drvdata(device);
2216 /* Refresh both wlan rfkill state and pci hotplug */
2217 if (asus->wlan.rfkill)
2218 asus_rfkill_hotplug(asus);
2220 if (asus->bluetooth.rfkill) {
2221 bl = !asus_wmi_get_devstate_simple(asus,
2222 ASUS_WMI_DEVID_BLUETOOTH);
2223 rfkill_set_sw_state(asus->bluetooth.rfkill, bl);
2225 if (asus->wimax.rfkill) {
2226 bl = !asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WIMAX);
2227 rfkill_set_sw_state(asus->wimax.rfkill, bl);
2229 if (asus->wwan3g.rfkill) {
2230 bl = !asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WWAN3G);
2231 rfkill_set_sw_state(asus->wwan3g.rfkill, bl);
2233 if (asus->gps.rfkill) {
2234 bl = !asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_GPS);
2235 rfkill_set_sw_state(asus->gps.rfkill, bl);
2237 if (asus->uwb.rfkill) {
2238 bl = !asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_UWB);
2239 rfkill_set_sw_state(asus->uwb.rfkill, bl);
2241 if (!IS_ERR_OR_NULL(asus->kbd_led.dev))
2242 queue_work(asus->led_workqueue, &asus->kbd_led_work);
2247 static const struct dev_pm_ops asus_pm_ops = {
2248 .thaw = asus_hotk_thaw,
2249 .restore = asus_hotk_restore,
2250 .resume = asus_hotk_resume,
2253 static int asus_wmi_probe(struct platform_device *pdev)
2255 struct platform_driver *pdrv = to_platform_driver(pdev->dev.driver);
2256 struct asus_wmi_driver *wdrv = to_asus_wmi_driver(pdrv);
2259 if (!wmi_has_guid(ASUS_WMI_MGMT_GUID)) {
2260 pr_warn("Management GUID not found\n");
2264 if (wdrv->event_guid && !wmi_has_guid(wdrv->event_guid)) {
2265 pr_warn("Event GUID not found\n");
2270 ret = wdrv->probe(pdev);
2275 return asus_wmi_add(pdev);
2280 int __init_or_module asus_wmi_register_driver(struct asus_wmi_driver *driver)
2282 struct platform_driver *platform_driver;
2283 struct platform_device *platform_device;
2288 platform_driver = &driver->platform_driver;
2289 platform_driver->remove = asus_wmi_remove;
2290 platform_driver->driver.owner = driver->owner;
2291 platform_driver->driver.name = driver->name;
2292 platform_driver->driver.pm = &asus_pm_ops;
2294 platform_device = platform_create_bundle(platform_driver,
2297 if (IS_ERR(platform_device))
2298 return PTR_ERR(platform_device);
2303 EXPORT_SYMBOL_GPL(asus_wmi_register_driver);
2305 void asus_wmi_unregister_driver(struct asus_wmi_driver *driver)
2307 platform_device_unregister(driver->platform_device);
2308 platform_driver_unregister(&driver->platform_driver);
2311 EXPORT_SYMBOL_GPL(asus_wmi_unregister_driver);
2313 static int __init asus_wmi_init(void)
2315 if (!wmi_has_guid(ASUS_WMI_MGMT_GUID)) {
2316 pr_info("Asus Management GUID not found\n");
2320 pr_info("ASUS WMI generic driver loaded\n");
2324 static void __exit asus_wmi_exit(void)
2326 pr_info("ASUS WMI generic driver unloaded\n");
2329 module_init(asus_wmi_init);
2330 module_exit(asus_wmi_exit);