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authorJingoo Han <jg1.han@samsung.com>2013-04-29 16:17:35 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2013-04-29 18:28:15 -0700
commiteba3bfb4c086ead379430439f7bf710697e62c45 (patch)
treec209abcb092844b8046c7de4c3d4b976f92967a2 /drivers/video/backlight
parentef73e632fe48b97e67cbff339f9e7d30535d682f (diff)
backlight: ld9040: convert ld9040 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>
Diffstat (limited to 'drivers/video/backlight')
-rw-r--r--drivers/video/backlight/ld9040.c20
1 files changed, 9 insertions, 11 deletions
diff --git a/drivers/video/backlight/ld9040.c b/drivers/video/backlight/ld9040.c
index 1b642f5f381..1e0a3093ce5 100644
--- a/drivers/video/backlight/ld9040.c
+++ b/drivers/video/backlight/ld9040.c
@@ -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);