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....@samsung.com>
---
drivers/video/backlight/ld9040.c | 20 +++++++++-----------
1 files changed, 9 insertions(+), 11 deletions(-)
diff --git a/drivers/video/backlight/ld9040.c b/drivers/video/backlight/ld9040.c
index 1b642f5f..1e0a309 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);
--
1.7.2.5
--
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