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Commit 91939509 authored by Xu Yang's avatar Xu Yang
Browse files

msm: mdss: Add support to read BL level for userspace 



Add parameter to indicate backlight level set from
userspace. And get the value by sysfs read function.

Change-Id: Iaecb0076e1f664fe87f3351edeecce40935cbae4
Signed-off-by: default avatarXu Yang <yangxu@codeaurora.org>
parent ba53c451

drivers/video/fbdev/msm/mdss_fb.c

+3 −1
Original line number Diff line number Diff line
@@ -301,6 +301,7 @@ static void mdss_fb_set_bl_brightness(struct led_classdev *led_cdev, 
		mdss_fb_set_backlight(mfd, bl_lvl);

		mutex_unlock(&mfd->bl_lock);

	}

	mfd->bl_level_usr = bl_lvl;

}



static enum led_brightness mdss_fb_get_bl_brightness(
@@ -309,7 +310,7 @@ static enum led_brightness mdss_fb_get_bl_brightness( 
	struct msm_fb_data_type *mfd = dev_get_drvdata(led_cdev->dev->parent);

	enum led_brightness value;



	MDSS_BL_TO_BRIGHT(value, mfd->bl_level, mfd->panel_info->bl_max,

	MDSS_BL_TO_BRIGHT(value, mfd->bl_level_usr, mfd->panel_info->bl_max,

			  mfd->panel_info->brightness_max);



	return value;
@@ -1276,6 +1277,7 @@ static int mdss_fb_probe(struct platform_device *pdev) 
	mfd->calib_mode_bl = 0;

	mfd->unset_bl_level = U32_MAX;

	mfd->bl_extn_level = -1;

	mfd->bl_level_usr = backlight_led.brightness;



	mfd->pdev = pdev;

drivers/video/fbdev/msm/mdss_fb.h

+1 −0
Original line number Diff line number Diff line
@@ -314,6 +314,7 @@ struct msm_fb_data_type { 
	u32 unset_bl_level;

	bool allow_bl_update;

	u32 bl_level_scaled;

	u32 bl_level_usr;

	struct mutex bl_lock;

	struct mutex mdss_sysfs_lock;

	bool ipc_resume;

drivers/video/fbdev/msm/mdss_mdp_ctl.c

+1 −0
Original line number Diff line number Diff line
@@ -6061,6 +6061,7 @@ int mdss_mdp_display_commit(struct mdss_mdp_ctl *ctl, void *arg, 
			mutex_lock(&ctl->mfd->bl_lock);

			mdss_fb_set_backlight(ctl->mfd,

					      ctl->mfd->bl_extn_level);

			ctl->mfd->bl_level_usr = ctl->mfd->bl_extn_level;

			mutex_unlock(&ctl->mfd->bl_lock);

		}

	}