From 38916dcf6c5069d9fad913fbb3beaffdb7d219cb Mon Sep 17 00:00:00 2001 From: Inderpal Singh Date: Thu, 5 Jul 2012 08:31:46 +0530 Subject: [PATCH 1/2] BACKLIGHT: PWM: Implement shutdown function Implemented shutdown function so that LCD backlight can be turned off during system halt. Signed-off-by: Inderpal Singh --- drivers/video/backlight/pwm_bl.c | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/drivers/video/backlight/pwm_bl.c b/drivers/video/backlight/pwm_bl.c index 342b7d7..b9f3c40 100644 --- a/drivers/video/backlight/pwm_bl.c +++ b/drivers/video/backlight/pwm_bl.c @@ -165,6 +165,15 @@ static int pwm_backlight_remove(struct platform_device *pdev) return 0; } +static void pwm_backlight_shutdown(struct platform_device *pdev) +{ + struct backlight_device *bl = platform_get_drvdata(pdev); + struct pwm_bl_data *pb = dev_get_drvdata(&bl->dev); + + pwm_config(pb->pwm, 0, pb->period); + pwm_disable(pb->pwm); +} + #ifdef CONFIG_PM static int pwm_backlight_suspend(struct device *dev) { @@ -203,6 +212,7 @@ static struct platform_driver pwm_backlight_driver = { }, .probe = pwm_backlight_probe, .remove = pwm_backlight_remove, + .shutdown = pwm_backlight_shutdown, }; module_platform_driver(pwm_backlight_driver); -- 1.7.9.5