backlight: convert pwm_bl to dev_pm_ops

Should be no functional changes, mainly a reorganisation to support future
work.

[akpm@linux-foundation.org: fix CONFIG_PM=n build]
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Cc: Richard Purdie <rpurdie@rpsys.net>
Cc: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 11 insertions, 10 deletions

diff --git a/drivers/video/backlight/pwm_bl.c b/drivers/video/backlight/pwm_bl.c
index b811e8fb4062..7496d04e1d3c 100644
--- a/drivers/video/backlight/pwm_bl.c
+++ b/drivers/video/backlight/pwm_bl.c
@@ -169,10 +169,9 @@ static int pwm_backlight_remove(struct platform_device *pdev)
 }
 
 #ifdef CONFIG_PM
-static int pwm_backlight_suspend(struct platform_device *pdev,
-                                 pm_message_t state)
+static int pwm_backlight_suspend(struct device *dev)
 {
-        struct backlight_device *bl = platform_get_drvdata(pdev);
+        struct backlight_device *bl = dev_get_drvdata(dev);
         struct pwm_bl_data *pb = dev_get_drvdata(&bl->dev);
 
         if (pb->notify)
@@ -184,27 +183,29 @@ static int pwm_backlight_suspend(struct platform_device *pdev,
         return 0;
 }
 
-static int pwm_backlight_resume(struct platform_device *pdev)
+static int pwm_backlight_resume(struct device *dev)
 {
-        struct backlight_device *bl = platform_get_drvdata(pdev);
+        struct backlight_device *bl = dev_get_drvdata(dev);
 
         backlight_update_status(bl);
         return 0;
 }
-#else
-#define pwm_backlight_suspend   NULL
-#define pwm_backlight_resume    NULL
+
+static SIMPLE_DEV_PM_OPS(pwm_backlight_pm_ops, pwm_backlight_suspend,
+                         pwm_backlight_resume);
+
 #endif
 
 static struct platform_driver pwm_backlight_driver = {
         .driver         = {
                 .name   = "pwm-backlight",
                 .owner  = THIS_MODULE,
+#ifdef CONFIG_PM
+                .pm     = &pwm_backlight_pm_ops,
+#endif
         },
         .probe          = pwm_backlight_probe,
         .remove         = pwm_backlight_remove,
-        .suspend        = pwm_backlight_suspend,
-        .resume         = pwm_backlight_resume,
 };
 
 module_platform_driver(pwm_backlight_driver);