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backlight: ld9040: convert ld9040 to dev_pm_ops

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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 16:17:35 -07:00 committed by Linus Torvalds
parent ef73e632fe
commit eba3bfb4c0
1 changed files with 9 additions and 11 deletions
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20
drivers/video/backlight/ld9040.c
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@ -775,12 +775,12 @@ static int ld9040_remove(struct spi_device *spi)
return 0;
}
#if defined(CONFIG_PM)
static int ld9040_suspend(struct spi_device *spi, pm_message_t mesg)
#ifdef CONFIG_PM_SLEEP
static int ld9040_suspend(struct device *dev)
{
struct ld9040 *lcd = spi_get_drvdata(spi);
struct ld9040 *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
@ -789,19 +789,18 @@ static int ld9040_suspend(struct spi_device *spi, pm_message_t mesg)
return ld9040_power(lcd, FB_BLANK_POWERDOWN);
}
static int ld9040_resume(struct spi_device *spi)
static int ld9040_resume(struct device *dev)
{
struct ld9040 *lcd = spi_get_drvdata(spi);
struct ld9040 *lcd = dev_get_drvdata(dev);
lcd->power = FB_BLANK_POWERDOWN;
return ld9040_power(lcd, FB_BLANK_UNBLANK);
}
#else
#define ld9040_suspend NULL
#define ld9040_resume NULL
#endif
static SIMPLE_DEV_PM_OPS(ld9040_pm_ops, ld9040_suspend, ld9040_resume);
/* Power down all displays on reboot, poweroff or halt. */
static void ld9040_shutdown(struct spi_device *spi)
{
@ -814,12 +813,11 @@ static struct spi_driver ld9040_driver = {
.driver = {
.name = "ld9040",
.owner = THIS_MODULE,
.pm = &ld9040_pm_ops,
},
.probe = ld9040_probe,
.remove = ld9040_remove,
.shutdown = ld9040_shutdown,
.suspend = ld9040_suspend,
.resume = ld9040_resume,
};
module_spi_driver(ld9040_driver);