backlight: pm8941-wled: Add default-brightness property

[cascardo/linux.git] / drivers / video / backlight / pm8941-wled.c

diff --git a/drivers/video/backlight/pm8941-wled.c b/drivers/video/backlight/pm8941-wled.c
index 78bba87..0b6d219 100644 (file)
--- 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);
@@ -395,8 +399,12 @@ 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,