linux-kernel - [PATCH 14/14] backlight: tdo24m: convert tdo24m to dev_pm

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Date:	Tue, 12 Mar 2013 14:53:46 +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 14/14] backlight: tdo24m: convert tdo24m 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/tdo24m.c |   18 ++++++++----------
 1 files changed, 8 insertions(+), 10 deletions(-)

diff --git a/drivers/video/backlight/tdo24m.c b/drivers/video/backlight/tdo24m.c
index 0016208..18cdf46 100644
--- a/drivers/video/backlight/tdo24m.c
+++ b/drivers/video/backlight/tdo24m.c
@@ -412,25 +412,24 @@ static int tdo24m_remove(struct spi_device *spi)
 	return 0;
 }
 
-#ifdef CONFIG_PM
-static int tdo24m_suspend(struct spi_device *spi, pm_message_t state)
+#ifdef CONFIG_PM_SLEEP
+static int tdo24m_suspend(struct device *dev)
 {
-	struct tdo24m *lcd = spi_get_drvdata(spi);
+	struct tdo24m *lcd = dev_get_drvdata(dev);
 
 	return tdo24m_power(lcd, FB_BLANK_POWERDOWN);
 }
 
-static int tdo24m_resume(struct spi_device *spi)
+static int tdo24m_resume(struct device *dev)
 {
-	struct tdo24m *lcd = spi_get_drvdata(spi);
+	struct tdo24m *lcd = dev_get_drvdata(dev);
 
 	return tdo24m_power(lcd, FB_BLANK_UNBLANK);
 }
-#else
-#define tdo24m_suspend	NULL
-#define tdo24m_resume	NULL
 #endif
 
+static SIMPLE_DEV_PM_OPS(tdo24m_pm_ops, tdo24m_suspend, tdo24m_resume);
+
 /* Power down all displays on reboot, poweroff or halt */
 static void tdo24m_shutdown(struct spi_device *spi)
 {
@@ -443,12 +442,11 @@ static struct spi_driver tdo24m_driver = {
 	.driver = {
 		.name		= "tdo24m",
 		.owner		= THIS_MODULE,
+		.pm		= &tdo24m_pm_ops,
 	},
 	.probe		= tdo24m_probe,
 	.remove		= tdo24m_remove,
 	.shutdown	= tdo24m_shutdown,
-	.suspend	= tdo24m_suspend,
-	.resume		= tdo24m_resume,
 };
 
 module_spi_driver(tdo24m_driver);
-- 
1.7.2.5


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