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Commit f2b585b4 authored by Carlos Corbacho's avatar Carlos Corbacho Committed by Andi Kleen
Browse files

acer-wmi: Respect framebuffer blanking in backlight 



If the framebuffer has requested blanking, turn the backlight down. Also
offer the user the option to do this.

Reported-by: default avatarMichal Pecio <michal.pecio@gmail.com>
Signed-off-by: default avatarCarlos Corbacho <carlos@strangeworlds.co.uk>
Signed-off-by: default avatarLen Brown <len.brown@intel.com>
Signed-off-by: default avatarAndi Kleen <ak@linux.intel.com>
parent 9991d9f2

drivers/misc/acer-wmi.c

+12 −2
Original line number Diff line number Diff line
@@ -29,6 +29,7 @@ 
#include <linux/init.h>

#include <linux/types.h>

#include <linux/dmi.h>

#include <linux/fb.h>

#include <linux/backlight.h>

#include <linux/leds.h>

#include <linux/platform_device.h>
@@ -830,7 +831,15 @@ static int read_brightness(struct backlight_device *bd) 


static int update_bl_status(struct backlight_device *bd)

{

	set_u32(bd->props.brightness, ACER_CAP_BRIGHTNESS);

	int intensity = bd->props.brightness;



	if (bd->props.power != FB_BLANK_UNBLANK)

		intensity = 0;

	if (bd->props.fb_blank != FB_BLANK_UNBLANK)

		intensity = 0;



	set_u32(intensity, ACER_CAP_BRIGHTNESS);



	return 0;

}
@@ -852,8 +861,9 @@ static int __devinit acer_backlight_init(struct device *dev) 


	acer_backlight_device = bd;



	bd->props.power = FB_BLANK_UNBLANK;

	bd->props.brightness = max_brightness;

	bd->props.max_brightness = max_brightness;

	bd->props.brightness = read_brightness(NULL);

	backlight_update_status(bd);

	return 0;

}