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path: root/drivers/video/backlight/pm8941-wled.c
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Diffstat (limited to 'drivers/video/backlight/pm8941-wled.c')
-rw-r--r--drivers/video/backlight/pm8941-wled.c13
1 files changed, 9 insertions, 4 deletions
diff --git a/drivers/video/backlight/pm8941-wled.c b/drivers/video/backlight/pm8941-wled.c
index c704c3236..0b6d21955 100644
--- a/drivers/video/backlight/pm8941-wled.c
+++ b/drivers/video/backlight/pm8941-wled.c
@@ -17,6 +17,9 @@
#include <linux/of_device.h>
#include <linux/regmap.h>
+/* From DT binding */
+#define PM8941_WLED_DEFAULT_BRIGHTNESS 2048
+
#define PM8941_WLED_REG_VAL_BASE 0x40
#define PM8941_WLED_REG_VAL_MAX 0xFFF
@@ -373,6 +376,7 @@ static int pm8941_wled_probe(struct platform_device *pdev)
struct backlight_device *bl;
struct pm8941_wled *wled;
struct regmap *regmap;
+ u32 val;
int rc;
regmap = dev_get_regmap(pdev->dev.parent, NULL);
@@ -395,16 +399,17 @@ static int pm8941_wled_probe(struct platform_device *pdev)
if (rc)
return rc;
+ val = PM8941_WLED_DEFAULT_BRIGHTNESS;
+ of_property_read_u32(pdev->dev.of_node, "default-brightness", &val);
+
memset(&props, 0, sizeof(struct backlight_properties));
props.type = BACKLIGHT_RAW;
+ props.brightness = val;
props.max_brightness = PM8941_WLED_REG_VAL_MAX;
bl = devm_backlight_device_register(&pdev->dev, wled->name,
&pdev->dev, wled,
&pm8941_wled_ops, &props);
- if (IS_ERR(bl))
- return PTR_ERR(bl);
-
- return 0;
+ return PTR_ERR_OR_ZERO(bl);
};
static const struct of_device_id pm8941_wled_match_table[] = {