backlight: da903x_bl: use BL_CORE_SUSPENDRESUME option

Use BL_CORE_SUSPENDRESUME option to support suspend/resume.  It reduces
code size.

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Cc: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

diff --git a/drivers/video/backlight/da903x_bl.c b/drivers/video/backlight/da903x_bl.c
index 8179cef..67cadd3 100644 (file)
--- a/drivers/video/backlight/da903x_bl.c
+++ b/drivers/video/backlight/da903x_bl.c
@@ -88,16 +88,21 @@ static int da903x_backlight_update_status(struct backlight_device *bl)
        if (bl->props.fb_blank != FB_BLANK_UNBLANK)
                brightness = 0;
 
+       if (bl->props.state & BL_CORE_SUSPENDED)
+               brightness = 0;
+
        return da903x_backlight_set(bl, brightness);
 }
 
 static int da903x_backlight_get_brightness(struct backlight_device *bl)
 {
        struct da903x_backlight_data *data = bl_get_data(bl);
+
        return data->current_brightness;
 }
 
 static const struct backlight_ops da903x_backlight_ops = {
+       .options        = BL_CORE_SUSPENDRESUME,
        .update_status  = da903x_backlight_update_status,
        .get_brightness = da903x_backlight_get_brightness,
 };
@@ -161,35 +166,10 @@ static int da903x_backlight_remove(struct platform_device *pdev)
        return 0;
 }
 
-#ifdef CONFIG_PM
-static int da903x_backlight_suspend(struct device *dev)
-{
-       struct backlight_device *bl = dev_get_drvdata(dev);
-
-       return da903x_backlight_set(bl, 0);
-}
-
-static int da903x_backlight_resume(struct device *dev)
-{
-       struct backlight_device *bl = dev_get_drvdata(dev);
-
-       backlight_update_status(bl);
-       return 0;
-}
-
-static const struct dev_pm_ops da903x_backlight_pm_ops = {
-       .suspend        = da903x_backlight_suspend,
-       .resume         = da903x_backlight_resume,
-};
-#endif
-
 static struct platform_driver da903x_backlight_driver = {
        .driver         = {
                .name   = "da903x-backlight",
                .owner  = THIS_MODULE,
-#ifdef CONFIG_PM
-               .pm     = &da903x_backlight_pm_ops,
-#endif
        },
        .probe          = da903x_backlight_probe,
        .remove         = da903x_backlight_remove,