backlight: lm3533_bl: convert lm3533_bl 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>

1 files changed, 10 insertions, 12 deletions

diff --git a/drivers/video/backlight/lm3533_bl.c b/drivers/video/backlight/lm3533_bl.c
index 5d18d4d7f470..1d1dbfb789e3 100644
--- a/drivers/video/backlight/lm3533_bl.c
+++ b/drivers/video/backlight/lm3533_bl.c
@@ -368,29 +368,28 @@ static int lm3533_bl_remove(struct platform_device *pdev)
         return 0;
 }
 
-#ifdef CONFIG_PM
-static int lm3533_bl_suspend(struct platform_device *pdev, pm_message_t state)
+#ifdef CONFIG_PM_SLEEP
+static int lm3533_bl_suspend(struct device *dev)
 {
-        struct lm3533_bl *bl = platform_get_drvdata(pdev);
+        struct lm3533_bl *bl = dev_get_drvdata(dev);
 
-        dev_dbg(&pdev->dev, "%s\n", __func__);
+        dev_dbg(dev, "%s\n", __func__);
 
         return lm3533_ctrlbank_disable(&bl->cb);
 }
 
-static int lm3533_bl_resume(struct platform_device *pdev)
+static int lm3533_bl_resume(struct device *dev)
 {
-        struct lm3533_bl *bl = platform_get_drvdata(pdev);
+        struct lm3533_bl *bl = dev_get_drvdata(dev);
 
-        dev_dbg(&pdev->dev, "%s\n", __func__);
+        dev_dbg(dev, "%s\n", __func__);
 
         return lm3533_ctrlbank_enable(&bl->cb);
 }
-#else
-#define lm3533_bl_suspend       NULL
-#define lm3533_bl_resume        NULL
 #endif
 
+static SIMPLE_DEV_PM_OPS(lm3533_bl_pm_ops, lm3533_bl_suspend, lm3533_bl_resume);
+
 static void lm3533_bl_shutdown(struct platform_device *pdev)
 {
         struct lm3533_bl *bl = platform_get_drvdata(pdev);
@@ -404,12 +403,11 @@ static struct platform_driver lm3533_bl_driver = {
         .driver = {
                 .name   = "lm3533-backlight",
                 .owner  = THIS_MODULE,
+                .pm     = &lm3533_bl_pm_ops,
         },
         .probe          = lm3533_bl_probe,
         .remove         = lm3533_bl_remove,
         .shutdown       = lm3533_bl_shutdown,
-        .suspend        = lm3533_bl_suspend,
-        .resume         = lm3533_bl_resume,
 };
 module_platform_driver(lm3533_bl_driver);