backlight: hp680_bl: convert hp680bl to dev_pm_ops

Instead of using legacy suspend/resume methods, using newer dev_pm_ops
structure allows better control over power management.
Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

drivers/video/backlight/hp680_bl.c

@@ -64,29 +64,28 @@ static void hp680bl_send_intensity(struct backlight_device *bd)
 }
 
 
-#ifdef CONFIG_PM
-static int hp680bl_suspend(struct platform_device *pdev, pm_message_t state)
+#ifdef CONFIG_PM_SLEEP
+static int hp680bl_suspend(struct device *dev)
 {
-	struct backlight_device *bd = platform_get_drvdata(pdev);
+	struct backlight_device *bd = dev_get_drvdata(dev);
 
 	hp680bl_suspended = 1;
 	hp680bl_send_intensity(bd);
 	return 0;
 }
 
-static int hp680bl_resume(struct platform_device *pdev)
+static int hp680bl_resume(struct device *dev)
 {
-	struct backlight_device *bd = platform_get_drvdata(pdev);
+	struct backlight_device *bd = dev_get_drvdata(dev);
 
 	hp680bl_suspended = 0;
 	hp680bl_send_intensity(bd);
 	return 0;
 }
-#else
-#define hp680bl_suspend	NULL
-#define hp680bl_resume	NULL
 #endif
 
+static SIMPLE_DEV_PM_OPS(hp680bl_pm_ops, hp680bl_suspend, hp680bl_resume);
+
 static int hp680bl_set_intensity(struct backlight_device *bd)
 {
 	hp680bl_send_intensity(bd);
@@ -140,10 +139,9 @@ static int hp680bl_remove(struct platform_device *pdev)
 static struct platform_driver hp680bl_driver = {
 	.probe		= hp680bl_probe,
 	.remove		= hp680bl_remove,
-	.suspend	= hp680bl_suspend,
-	.resume		= hp680bl_resume,
 	.driver		= {
 		.name	= "hp680-bl",
+		.pm	= &hp680bl_pm_ops,
 	},
 };