linux-kernel - [PATCH 10/14] backlight: kb3886_bl: convert kb3886bl to dev_pm

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Message-id: <004701ce1ee5$c321f650$4965e2f0$%han@samsung.com>
Date:	Tue, 12 Mar 2013 14:52:20 +0900
From:	Jingoo Han <jg1.han@...sung.com>
To:	'Andrew Morton' <akpm@...ux-foundation.org>
Cc:	'LKML' <linux-kernel@...r.kernel.org>,
	'Richard Purdie' <rpurdie@...ys.net>,
	'Jingoo Han' <jg1.han@...sung.com>
Subject: [PATCH 10/14] backlight: kb3886_bl: convert kb3886bl 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@...sung.com>
---
 drivers/video/backlight/kb3886_bl.c |   18 ++++++++----------
 1 files changed, 8 insertions(+), 10 deletions(-)

diff --git a/drivers/video/backlight/kb3886_bl.c b/drivers/video/backlight/kb3886_bl.c
index 6c5ed6b..bca6ccc 100644
--- a/drivers/video/backlight/kb3886_bl.c
+++ b/drivers/video/backlight/kb3886_bl.c
@@ -106,29 +106,28 @@ static int kb3886bl_send_intensity(struct backlight_device *bd)
 	return 0;
 }
 
-#ifdef CONFIG_PM
-static int kb3886bl_suspend(struct platform_device *pdev, pm_message_t state)
+#ifdef CONFIG_PM_SLEEP
+static int kb3886bl_suspend(struct device *dev)
 {
-	struct backlight_device *bd = platform_get_drvdata(pdev);
+	struct backlight_device *bd = dev_get_drvdata(dev);
 
 	kb3886bl_flags |= KB3886BL_SUSPENDED;
 	backlight_update_status(bd);
 	return 0;
 }
 
-static int kb3886bl_resume(struct platform_device *pdev)
+static int kb3886bl_resume(struct device *dev)
 {
-	struct backlight_device *bd = platform_get_drvdata(pdev);
+	struct backlight_device *bd = dev_get_drvdata(dev);
 
 	kb3886bl_flags &= ~KB3886BL_SUSPENDED;
 	backlight_update_status(bd);
 	return 0;
 }
-#else
-#define kb3886bl_suspend	NULL
-#define kb3886bl_resume		NULL
 #endif
 
+static SIMPLE_DEV_PM_OPS(kb3886bl_pm_ops, kb3886bl_suspend, kb3886bl_resume);
+
 static int kb3886bl_get_intensity(struct backlight_device *bd)
 {
 	return kb3886bl_intensity;
@@ -179,10 +178,9 @@ static int kb3886bl_remove(struct platform_device *pdev)
 static struct platform_driver kb3886bl_driver = {
 	.probe		= kb3886bl_probe,
 	.remove		= kb3886bl_remove,
-	.suspend	= kb3886bl_suspend,
-	.resume		= kb3886bl_resume,
 	.driver		= {
 		.name	= "kb3886-bl",
+		.pm	= &kb3886bl_pm_ops,
 	},
 };
 
-- 
1.7.2.5


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