[PATCH 1/4] backlight: aat2870: Use backlight helper

[Stephen Kitt]

Instead of retrieving the backlight brightness in struct
backlight_properties manually, and then checking whether the backlight
should be on at all, use backlight_get_brightness() which does all
this and insulates this from future changes.

Signed-off-by: Stephen Kitt <steve@xxxxxxx>
Cc: Lee Jones <lee.jones@xxxxxxxxxx>
Cc: Daniel Thompson <daniel.thompson@xxxxxxxxxx>
Cc: Jingoo Han <jingoohan1@xxxxxxxxx>
Cc: Helge Deller <deller@xxxxxx>
Cc: dri-devel@xxxxxxxxxxxxxxxxxxxxx
Cc: linux-fbdev@xxxxxxxxxxxxxxx
---
 drivers/video/backlight/aat2870_bl.c | 7 +------
 1 file changed, 1 insertion(+), 6 deletions(-)

diff --git a/drivers/video/backlight/aat2870_bl.c b/drivers/video/backlight/aat2870_bl.c
index a7af9adafad6..1cbb303e9c88 100644
--- a/drivers/video/backlight/aat2870_bl.c
+++ b/drivers/video/backlight/aat2870_bl.c
@@ -59,7 +59,7 @@ static int aat2870_bl_update_status(struct backlight_device *bd)
 	struct aat2870_bl_driver_data *aat2870_bl = bl_get_data(bd);
 	struct aat2870_data *aat2870 =
 			dev_get_drvdata(aat2870_bl->pdev->dev.parent);
-	int brightness = bd->props.brightness;
+	int brightness = backlight_get_brightness(bd);
 	int ret;
 
 	if ((brightness < 0) || (bd->props.max_brightness < brightness)) {
@@ -70,11 +70,6 @@ static int aat2870_bl_update_status(struct backlight_device *bd)
 	dev_dbg(&bd->dev, "brightness=%d, power=%d, state=%d\n",
 		 bd->props.brightness, bd->props.power, bd->props.state);
 
-	if ((bd->props.power != FB_BLANK_UNBLANK) ||
-			(bd->props.state & BL_CORE_FBBLANK) ||
-			(bd->props.state & BL_CORE_SUSPENDED))
-		brightness = 0;
-
 	ret = aat2870->write(aat2870, AAT2870_BLM,
 			     (u8)aat2870_brightness(aat2870_bl, brightness));
 	if (ret < 0)
-- 
2.30.2