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backlight: lms501kf03: convert lms501kf03 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@samsung.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Jingoo Han 2013-04-29 16:17:36 -07:00 committed by Linus Torvalds
parent eba3bfb4c0
commit 26cd2a440c
1 changed files with 10 additions and 12 deletions
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22
drivers/video/backlight/lms501kf03.c
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@ -387,13 +387,12 @@ static int lms501kf03_remove(struct spi_device *spi)
return 0; return 0;
} }
#if defined(CONFIG_PM) #ifdef CONFIG_PM_SLEEP
static int lms501kf03_suspend(struct device *dev)
static int lms501kf03_suspend(struct spi_device *spi, pm_message_t mesg)
{ {
struct lms501kf03 *lcd = spi_get_drvdata(spi); struct lms501kf03 *lcd = dev_get_drvdata(dev);
dev_dbg(&spi->dev, "lcd->power = %d\n", lcd->power); dev_dbg(dev, "lcd->power = %d\n", lcd->power);
/* /*
* when lcd panel is suspend, lcd panel becomes off * when lcd panel is suspend, lcd panel becomes off
@ -402,19 +401,19 @@ static int lms501kf03_suspend(struct spi_device *spi, pm_message_t mesg)
return lms501kf03_power(lcd, FB_BLANK_POWERDOWN); return lms501kf03_power(lcd, FB_BLANK_POWERDOWN);
} }
static int lms501kf03_resume(struct spi_device *spi) static int lms501kf03_resume(struct device *dev)
{ {
struct lms501kf03 *lcd = spi_get_drvdata(spi); struct lms501kf03 *lcd = dev_get_drvdata(dev);
lcd->power = FB_BLANK_POWERDOWN; lcd->power = FB_BLANK_POWERDOWN;
return lms501kf03_power(lcd, FB_BLANK_UNBLANK); return lms501kf03_power(lcd, FB_BLANK_UNBLANK);
} }
#else
#define lms501kf03_suspend NULL
#define lms501kf03_resume NULL
#endif #endif
static SIMPLE_DEV_PM_OPS(lms501kf03_pm_ops, lms501kf03_suspend,
lms501kf03_resume);
static void lms501kf03_shutdown(struct spi_device *spi) static void lms501kf03_shutdown(struct spi_device *spi)
{ {
struct lms501kf03 *lcd = spi_get_drvdata(spi); struct lms501kf03 *lcd = spi_get_drvdata(spi);
@ -426,12 +425,11 @@ static struct spi_driver lms501kf03_driver = {
.driver = { .driver = {
.name = "lms501kf03", .name = "lms501kf03",
.owner = THIS_MODULE, .owner = THIS_MODULE,
.pm = &lms501kf03_pm_ops,
}, },
.probe = lms501kf03_probe, .probe = lms501kf03_probe,
.remove = lms501kf03_remove, .remove = lms501kf03_remove,
.shutdown = lms501kf03_shutdown, .shutdown = lms501kf03_shutdown,
.suspend = lms501kf03_suspend,
.resume = lms501kf03_resume,
}; };
module_spi_driver(lms501kf03_driver); module_spi_driver(lms501kf03_driver);