From: Jingoo Han <jg1.han@samsung.com>
To: "'Andrew Morton'" <akpm@linux-foundation.org>,
"'LKML'" <linux-kernel@vger.kernel.org>
Cc: "'Richard Purdie'" <rpurdie@rpsys.net>,
"'Jingoo Han'" <jg1.han@samsung.com>
Subject: [PATCH] backlight: convert platform_lcd to dev_pm_ops
Date: Mon, 20 Feb 2012 19:16:51 +0900 [thread overview]
Message-ID: <017001ccefb8$c37e5880$4a7b0980$%han@samsung.com> (raw)
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>
Cc: Richard Purdie <rpurdie@rpsys.net>
---
drivers/video/backlight/platform_lcd.c | 19 ++++++++++---------
1 files changed, 10 insertions(+), 9 deletions(-)
diff --git a/drivers/video/backlight/platform_lcd.c b/drivers/video/backlight/platform_lcd.c
index f0bf491..b667234 100644
--- a/drivers/video/backlight/platform_lcd.c
+++ b/drivers/video/backlight/platform_lcd.c
@@ -121,9 +121,9 @@ static int __devexit platform_lcd_remove(struct platform_device *pdev)
}
#ifdef CONFIG_PM
-static int platform_lcd_suspend(struct platform_device *pdev, pm_message_t st)
+static int platform_lcd_suspend(struct device *dev)
{
- struct platform_lcd *plcd = platform_get_drvdata(pdev);
+ struct platform_lcd *plcd = dev_get_drvdata(dev);
plcd->suspended = 1;
platform_lcd_set_power(plcd->lcd, plcd->power);
@@ -131,29 +131,30 @@ static int platform_lcd_suspend(struct platform_device *pdev, pm_message_t st)
return 0;
}
-static int platform_lcd_resume(struct platform_device *pdev)
+static int platform_lcd_resume(struct device *dev)
{
- struct platform_lcd *plcd = platform_get_drvdata(pdev);
+ struct platform_lcd *plcd = dev_get_drvdata(dev);
plcd->suspended = 0;
platform_lcd_set_power(plcd->lcd, plcd->power);
return 0;
}
-#else
-#define platform_lcd_suspend NULL
-#define platform_lcd_resume NULL
+
+static SIMPLE_DEV_PM_OPS(platform_lcd_pm_ops, platform_lcd_suspend,
+ platform_lcd_resume);
#endif
static struct platform_driver platform_lcd_driver = {
.driver = {
.name = "platform-lcd",
.owner = THIS_MODULE,
+#ifdef CONFIG_PM
+ .pm = &platform_lcd_pm_ops,
+#endif
},
.probe = platform_lcd_probe,
.remove = __devexit_p(platform_lcd_remove),
- .suspend = platform_lcd_suspend,
- .resume = platform_lcd_resume,
};
module_platform_driver(platform_lcd_driver);
--
1.7.1
reply other threads:[~2012-02-20 10:16 UTC|newest]
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