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Commit 8b857353 authored by Corentin Chary's avatar Corentin Chary Committed by Len Brown
Browse files

asus-laptop: add light sensor support 



/proc/acpi/asus/lslvl is now /sys/.../asus-laptop/ls_level
/proc/acpi/asus/lssw is now /sys/.../asus-laptop/ls_switch nothing
else ..

Signed-off-by: default avatarCorentin Chary <corentincj@iksaif.net>
Signed-off-by: default avatarLen Brown <len.brown@intel.com>
parent 722ad971

drivers/misc/asus-laptop.c

+84 −0
Original line number Diff line number Diff line
@@ -145,6 +145,9 @@ ASUS_HANDLE(display_get, 
	    "\\INFB", /* A2H D1 L2D L3D L3H L2E L5D L5C M1A M2E L4L W3V */

	    "\\SSTE"); /* A3F A6F A3N A3L M6N W3N W6A */



ASUS_HANDLE(ls_switch, ASUS_HOTK_PREFIX "ALSC"); /* Z71A Z71V */

ASUS_HANDLE(ls_level, ASUS_HOTK_PREFIX "ALSL"); /* Z71A Z71V */



/*

 * This is the main structure, we can use it to store anything interesting

 * about the hotk device
@@ -155,6 +158,8 @@ struct asus_hotk { 
	acpi_handle handle;	//the handle of the hotk device

	char status;		//status of the hotk, for LEDs, ...

	u32 ledd_status;	//status of the LED display

	u8 light_level;    //light sensor level

	u8 light_switch;    //light sensor switch value

	u16 event_count[128];	//count for each event TODO make this better

};
@@ -590,6 +595,62 @@ static ssize_t store_disp(struct device *dev, struct device_attribute *attr, 
	return rv;

}



/*

 * Light Sens

 */

static void set_light_sens_switch(int value)

{

	if (!write_acpi_int(ls_switch_handle, NULL, value, NULL))

		printk(ASUS_WARNING "Error setting light sensor switch\n");

	hotk->light_switch = value;

}



static ssize_t show_lssw(struct device *dev,

			 struct device_attribute *attr, char *buf)

{

	return sprintf(buf, "%d\n", hotk->light_switch);

}



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

			  const char *buf, size_t count)

{

	int rv, value;



	rv = parse_arg(buf, count, &value);

	if (rv > 0)

		set_light_sens_switch(value ? 1 : 0);



	return rv;

}



static void set_light_sens_level(int value)

{

	if (!write_acpi_int(ls_level_handle, NULL, value, NULL))

		printk(ASUS_WARNING "Error setting light sensor level\n");

	hotk->light_level = value;

}



static ssize_t show_lslvl(struct device *dev,

			  struct device_attribute *attr, char *buf)

{

	return sprintf(buf, "%d\n", hotk->light_level);

}



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

			   const char *buf, size_t count)

{

	int rv, value;



	rv = parse_arg(buf, count, &value);

	if (rv > 0) {

		value = (0 < value) ? ((15 < value) ? 15 : value) : 0;

		/* 0 <= value <= 15 */

		set_light_sens_level(value);

	}



	return rv;

}



static void asus_hotk_notify(acpi_handle handle, u32 event, void *data)

{

	/* TODO Find a better way to handle events count. */
@@ -636,6 +697,8 @@ static ASUS_CREATE_DEVICE_ATTR(wlan); 
static ASUS_CREATE_DEVICE_ATTR(bluetooth);

static ASUS_CREATE_DEVICE_ATTR(display);

static ASUS_CREATE_DEVICE_ATTR(ledd);

static ASUS_CREATE_DEVICE_ATTR(ls_switch);

static ASUS_CREATE_DEVICE_ATTR(ls_level);



static struct attribute *asuspf_attributes[] = {

        &dev_attr_infos.attr,
@@ -643,6 +706,8 @@ static struct attribute *asuspf_attributes[] = { 
        &dev_attr_bluetooth.attr,

        &dev_attr_display.attr,

        &dev_attr_ledd.attr,

        &dev_attr_ls_switch.attr,

        &dev_attr_ls_level.attr,

        NULL

};
@@ -679,6 +744,10 @@ static void asus_hotk_add_fs(void) 
	if (ledd_set_handle)

		ASUS_SET_DEVICE_ATTR(ledd, 0644, show_ledd, store_ledd);



	if (ls_switch_handle && ls_level_handle) {

		ASUS_SET_DEVICE_ATTR(ls_level, 0644, show_lslvl, store_lslvl);

		ASUS_SET_DEVICE_ATTR(ls_switch, 0644, show_lssw, store_lssw);

	}

}



static int asus_handle_init(char *name, acpi_handle *handle,
@@ -800,6 +869,11 @@ static int asus_hotk_get_info(void) 
	ASUS_HANDLE_INIT(display_set);

	ASUS_HANDLE_INIT(display_get);



	/* There is a lot of models with "ALSL", but a few get

	   a real light sens, so we need to check it. */

	if(ASUS_HANDLE_INIT(ls_switch))

		ASUS_HANDLE_INIT(ls_level);



	kfree(model);



	return AE_OK;
@@ -874,6 +948,16 @@ static int asus_hotk_add(struct acpi_device *device) 
	/* LED display is off by default */

	hotk->ledd_status = 0xFFF;



 	/* Set initial values of light sensor and level */

 	hotk->light_switch = 1; /* Default to light sensor disabled */

 	hotk->light_level = 0; /* level 5 for sensor sensitivity */



 	if (ls_switch_handle)

 		set_light_sens_switch(hotk->light_switch);



 	if (ls_level_handle)

 		set_light_sens_level(hotk->light_level);



      end:

	if (result) {

		kfree(hotk->name);