linux-kernel - [PATCH 3/3] backlight: vgg2432a4: convert vgg2432a4_driver to dev_pm

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Date:	Thu, 28 Mar 2013 15:24:24 +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 3/3] backlight: vgg2432a4: convert vgg2432a4_driver to
 dev_pm_ops

Instead of using legacy suspend/resume methods, using newer dev_pm_ops
structure allows better control over power management. Also, use of
pm_message_t is deprecated. Thus, it is removed.

Signed-off-by: Jingoo Han <jg1.han@...sung.com>
---
 drivers/video/backlight/ili9320.c   |   24 +++++++++---------------
 drivers/video/backlight/ili9320.h   |    2 +-
 drivers/video/backlight/vgg2432a4.c |   18 ++++++++----------
 3 files changed, 18 insertions(+), 26 deletions(-)

diff --git a/drivers/video/backlight/ili9320.c b/drivers/video/backlight/ili9320.c
index 1235bf9..f5edbbe 100644
--- a/drivers/video/backlight/ili9320.c
+++ b/drivers/video/backlight/ili9320.c
@@ -270,27 +270,21 @@ int ili9320_remove(struct ili9320 *ili)
 }
 EXPORT_SYMBOL_GPL(ili9320_remove);
 
-#ifdef CONFIG_PM
-int ili9320_suspend(struct ili9320 *lcd, pm_message_t state)
+#ifdef CONFIG_PM_SLEEP
+int ili9320_suspend(struct ili9320 *lcd)
 {
 	int ret;
 
-	dev_dbg(lcd->dev, "%s: event %d\n", __func__, state.event);
+	ret = ili9320_power(lcd, FB_BLANK_POWERDOWN);
 
-	if (state.event == PM_EVENT_SUSPEND) {
-		ret = ili9320_power(lcd, FB_BLANK_POWERDOWN);
-
-		if (lcd->platdata->suspend == ILI9320_SUSPEND_DEEP) {
-			ili9320_write(lcd, ILI9320_POWER1, lcd->power1 |
-				      ILI9320_POWER1_SLP |
-				      ILI9320_POWER1_DSTB);
-			lcd->initialised = 0;
-		}
-
-		return ret;
+	if (lcd->platdata->suspend == ILI9320_SUSPEND_DEEP) {
+		ili9320_write(lcd, ILI9320_POWER1, lcd->power1 |
+			      ILI9320_POWER1_SLP |
+			      ILI9320_POWER1_DSTB);
+		lcd->initialised = 0;
 	}
 
-	return 0;
+	return ret;
 }
 EXPORT_SYMBOL_GPL(ili9320_suspend);
 
diff --git a/drivers/video/backlight/ili9320.h b/drivers/video/backlight/ili9320.h
index e0db738..42329e7 100644
--- a/drivers/video/backlight/ili9320.h
+++ b/drivers/video/backlight/ili9320.h
@@ -76,5 +76,5 @@ extern void ili9320_shutdown(struct ili9320 *lcd);
 
 /* PM */
 
-extern int ili9320_suspend(struct ili9320 *lcd, pm_message_t state);
+extern int ili9320_suspend(struct ili9320 *lcd);
 extern int ili9320_resume(struct ili9320 *lcd);
diff --git a/drivers/video/backlight/vgg2432a4.c b/drivers/video/backlight/vgg2432a4.c
index 84d582f..d538947 100644
--- a/drivers/video/backlight/vgg2432a4.c
+++ b/drivers/video/backlight/vgg2432a4.c
@@ -205,18 +205,15 @@ static int vgg2432a4_lcd_init(struct ili9320 *lcd,
 	return ret;
 }
 
-#ifdef CONFIG_PM
-static int vgg2432a4_suspend(struct spi_device *spi, pm_message_t state)
+#ifdef CONFIG_PM_SLEEP
+static int vgg2432a4_suspend(struct device *dev)
 {
-	return ili9320_suspend(spi_get_drvdata(spi), state);
+	return ili9320_suspend(dev_get_drvdata(dev));
 }
-static int vgg2432a4_resume(struct spi_device *spi)
+static int vgg2432a4_resume(struct device *dev)
 {
-	return ili9320_resume(spi_get_drvdata(spi));
+	return ili9320_resume(dev_get_drvdata(dev));
 }
-#else
-#define vgg2432a4_suspend	NULL
-#define vgg2432a4_resume	NULL
 #endif
 
 static struct ili9320_client vgg2432a4_client = {
@@ -249,16 +246,17 @@ static void vgg2432a4_shutdown(struct spi_device *spi)
 	ili9320_shutdown(spi_get_drvdata(spi));
 }
 
+static SIMPLE_DEV_PM_OPS(vgg2432a4_pm_ops, vgg2432a4_suspend, vgg2432a4_resume);
+
 static struct spi_driver vgg2432a4_driver = {
 	.driver = {
 		.name		= "VGG2432A4",
 		.owner		= THIS_MODULE,
+		.pm		= &vgg2432a4_pm_ops,
 	},
 	.probe		= vgg2432a4_probe,
 	.remove		= vgg2432a4_remove,
 	.shutdown	= vgg2432a4_shutdown,
-	.suspend	= vgg2432a4_suspend,
-	.resume		= vgg2432a4_resume,
 };
 
 module_spi_driver(vgg2432a4_driver);
-- 
1.7.2.5


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