Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit cc7993f6 authored by Dilan Lee's avatar Dilan Lee Committed by Linus Torvalds
Browse files

backlight: add a callback 'notify_after' for backlight control 



We need a callback to do some things after pwm_enable, pwm_disable
and pwm_config.

Signed-off-by: default avatarDilan Lee <dilee@nvidia.com>
Reviewed-by: default avatarRobert Morell <rmorell@nvidia.com>
Reviewed-by: default avatarArun Murthy <arun.murthy@stericsson.com>
Cc: Richard Purdie <rpurdie@rpsys.net>
Cc: Paul Mundt <lethal@linux-sh.org>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent 23751be0

drivers/video/backlight/pwm_bl.c

+9 −0
Original line number Diff line number Diff line
@@ -28,6 +28,8 @@ struct pwm_bl_data { 
	unsigned int		lth_brightness;

	int			(*notify)(struct device *,

					  int brightness);

	void			(*notify_after)(struct device *,

					int brightness);

	int			(*check_fb)(struct device *, struct fb_info *);

};
@@ -55,6 +57,10 @@ static int pwm_backlight_update_status(struct backlight_device *bl) 
		pwm_config(pb->pwm, brightness, pb->period);

		pwm_enable(pb->pwm);

	}



	if (pb->notify_after)

		pb->notify_after(pb->dev, brightness);



	return 0;

}
@@ -105,6 +111,7 @@ static int pwm_backlight_probe(struct platform_device *pdev) 


	pb->period = data->pwm_period_ns;

	pb->notify = data->notify;

	pb->notify_after = data->notify_after;

	pb->check_fb = data->check_fb;

	pb->lth_brightness = data->lth_brightness *

		(data->pwm_period_ns / data->max_brightness);
@@ -172,6 +179,8 @@ static int pwm_backlight_suspend(struct platform_device *pdev, 
		pb->notify(pb->dev, 0);

	pwm_config(pb->pwm, 0, pb->period);

	pwm_disable(pb->pwm);

	if (pb->notify_after)

		pb->notify_after(pb->dev, 0);

	return 0;

}

include/linux/pwm_backlight.h

+1 −0
Original line number Diff line number Diff line
@@ -14,6 +14,7 @@ struct platform_pwm_backlight_data { 
	unsigned int pwm_period_ns;

	int (*init)(struct device *dev);

	int (*notify)(struct device *dev, int brightness);

	void (*notify_after)(struct device *dev, int brightness);

	void (*exit)(struct device *dev);

	int (*check_fb)(struct device *dev, struct fb_info *info);

};