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Commit aca234f6 authored by Oleksij Rempel's avatar Oleksij Rempel Committed by Darren Hart
Browse files

asus-wmi: provide access to ALS control 



Asus Zenbook ux31a is providing ACPI0008 interface for ALS
(Ambient Light Sensor), which is accessible for OS => Win 7.
This sensor can be used with iio/acpi-als driver.
Since it is disabled by default, we should use asus-wmi
interface to enable it.

Signed-off-by: default avatarOleksij Rempel <linux@rempel-privat.de>
Signed-off-by: default avatarDarren Hart <dvhart@linux.intel.com>
parent 2d98e0b9

drivers/platform/x86/asus-wmi.c

+5 −0
Original line number Diff line number Diff line
@@ -114,6 +114,7 @@ MODULE_LICENSE("GPL"); 
#define ASUS_WMI_DEVID_LED6		0x00020016



/* Backlight and Brightness */

#define ASUS_WMI_DEVID_ALS_ENABLE	0x00050001 /* Ambient Light Sensor */

#define ASUS_WMI_DEVID_BACKLIGHT	0x00050011

#define ASUS_WMI_DEVID_BRIGHTNESS	0x00050012

#define ASUS_WMI_DEVID_KBD_BACKLIGHT	0x00050021
@@ -1730,6 +1731,7 @@ ASUS_WMI_CREATE_DEVICE_ATTR(touchpad, 0644, ASUS_WMI_DEVID_TOUCHPAD); 
ASUS_WMI_CREATE_DEVICE_ATTR(camera, 0644, ASUS_WMI_DEVID_CAMERA);

ASUS_WMI_CREATE_DEVICE_ATTR(cardr, 0644, ASUS_WMI_DEVID_CARDREADER);

ASUS_WMI_CREATE_DEVICE_ATTR(lid_resume, 0644, ASUS_WMI_DEVID_LID_RESUME);

ASUS_WMI_CREATE_DEVICE_ATTR(als_enable, 0644, ASUS_WMI_DEVID_ALS_ENABLE);



static ssize_t store_cpufv(struct device *dev, struct device_attribute *attr,

			   const char *buf, size_t count)
@@ -1756,6 +1758,7 @@ static struct attribute *platform_attributes[] = { 
	&dev_attr_cardr.attr,

	&dev_attr_touchpad.attr,

	&dev_attr_lid_resume.attr,

	&dev_attr_als_enable.attr,

	NULL

};
@@ -1776,6 +1779,8 @@ static umode_t asus_sysfs_is_visible(struct kobject *kobj, 
		devid = ASUS_WMI_DEVID_TOUCHPAD;

	else if (attr == &dev_attr_lid_resume.attr)

		devid = ASUS_WMI_DEVID_LID_RESUME;

	else if (attr == &dev_attr_als_enable.attr)

		devid = ASUS_WMI_DEVID_ALS_ENABLE;



	if (devid != -1)

		ok = !(asus_wmi_get_devstate_simple(asus, devid) < 0);