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authorThierry Reding <treding@nvidia.com>2014-04-29 17:28:59 +0200
committerThierry Reding <thierry.reding@gmail.com>2014-05-02 13:25:59 +0200
commit5f33b896246a2d9bdf01352de11d4dab96ba2fc9 (patch)
treeafc09c8181b95ce366318486f2f2e9fe5584a8a5 /drivers
parent093e00bb3f82f3c67e2d1682e316fc012bcd0d92 (diff)
downloadlinux-stericsson-5f33b896246a2d9bdf01352de11d4dab96ba2fc9.tar.gz
pwm-backlight: Disable backlight on shutdown
When a device is shut down, make sure to disable the backlight. If it stays lit, it gives the impression that the device hasn't turned off. Furthermore keeping the backlight on may consume power, which is not what users expect when they shut down a device. Tested-by: Stephen Warren <swarren@nvidia.com> Signed-off-by: Thierry Reding <treding@nvidia.com>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/video/backlight/pwm_bl.c9
1 files changed, 9 insertions, 0 deletions
diff --git a/drivers/video/backlight/pwm_bl.c b/drivers/video/backlight/pwm_bl.c
index b75201ff46f6..fa7f5c35b7fb 100644
--- a/drivers/video/backlight/pwm_bl.c
+++ b/drivers/video/backlight/pwm_bl.c
@@ -359,6 +359,14 @@ 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 = bl_get_data(bl);
+
+ pwm_backlight_power_off(pb);
+}
+
#ifdef CONFIG_PM_SLEEP
static int pwm_backlight_suspend(struct device *dev)
{
@@ -404,6 +412,7 @@ 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);