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-rw-r--r--Documentation/devicetree/bindings/video/backlight/pm8941-wled.txt2
-rw-r--r--drivers/video/backlight/88pm860x_bl.c1
-rw-r--r--drivers/video/backlight/adp8860_bl.c1
-rw-r--r--drivers/video/backlight/adp8870_bl.c1
-rw-r--r--drivers/video/backlight/lp855x_bl.c1
-rw-r--r--drivers/video/backlight/pm8941-wled.c13
-rw-r--r--drivers/video/backlight/pwm_bl.c19
7 files changed, 22 insertions, 16 deletions
diff --git a/Documentation/devicetree/bindings/video/backlight/pm8941-wled.txt b/Documentation/devicetree/bindings/video/backlight/pm8941-wled.txt
index 424f8444a6cd..e5b294dafc58 100644
--- a/Documentation/devicetree/bindings/video/backlight/pm8941-wled.txt
+++ b/Documentation/devicetree/bindings/video/backlight/pm8941-wled.txt
@@ -5,6 +5,8 @@ Required properties:
- reg: slave address
Optional properties:
+- default-brightness: brightness value on boot, value from: 0-4095
+ default: 2048
- label: The name of the backlight device
- qcom,cs-out: bool; enable current sink output
- qcom,cabc: bool; enable content adaptive backlight control
diff --git a/drivers/video/backlight/88pm860x_bl.c b/drivers/video/backlight/88pm860x_bl.c
index 2da5862876d1..6d8dc2c77520 100644
--- a/drivers/video/backlight/88pm860x_bl.c
+++ b/drivers/video/backlight/88pm860x_bl.c
@@ -180,6 +180,7 @@ static int pm860x_backlight_dt_init(struct platform_device *pdev,
data->iset = PM8606_WLED_CURRENT(iset);
of_property_read_u32(np, "marvell,88pm860x-pwm",
&data->pwm);
+ of_node_put(np);
break;
}
}
diff --git a/drivers/video/backlight/adp8860_bl.c b/drivers/video/backlight/adp8860_bl.c
index 71147f4461b8..98ffe71e8af2 100644
--- a/drivers/video/backlight/adp8860_bl.c
+++ b/drivers/video/backlight/adp8860_bl.c
@@ -819,4 +819,3 @@ module_i2c_driver(adp8860_driver);
MODULE_LICENSE("GPL v2");
MODULE_AUTHOR("Michael Hennerich <hennerich@blackfin.uclinux.org>");
MODULE_DESCRIPTION("ADP8860 Backlight driver");
-MODULE_ALIAS("i2c:adp8860-backlight");
diff --git a/drivers/video/backlight/adp8870_bl.c b/drivers/video/backlight/adp8870_bl.c
index 037e43083343..9d738352d7d4 100644
--- a/drivers/video/backlight/adp8870_bl.c
+++ b/drivers/video/backlight/adp8870_bl.c
@@ -992,4 +992,3 @@ module_i2c_driver(adp8870_driver);
MODULE_LICENSE("GPL v2");
MODULE_AUTHOR("Michael Hennerich <hennerich@blackfin.uclinux.org>");
MODULE_DESCRIPTION("ADP8870 Backlight driver");
-MODULE_ALIAS("i2c:adp8870-backlight");
diff --git a/drivers/video/backlight/lp855x_bl.c b/drivers/video/backlight/lp855x_bl.c
index f88df9ec08d0..daca9e6a2bb3 100644
--- a/drivers/video/backlight/lp855x_bl.c
+++ b/drivers/video/backlight/lp855x_bl.c
@@ -283,6 +283,7 @@ static int lp855x_backlight_register(struct lp855x *lp)
struct lp855x_platform_data *pdata = lp->pdata;
const char *name = pdata->name ? : DEFAULT_BL_NAME;
+ memset(&props, 0, sizeof(props));
props.type = BACKLIGHT_PLATFORM;
props.max_brightness = MAX_BRIGHTNESS;
diff --git a/drivers/video/backlight/pm8941-wled.c b/drivers/video/backlight/pm8941-wled.c
index c704c3236034..0b6d21955d91 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[] = {
diff --git a/drivers/video/backlight/pwm_bl.c b/drivers/video/backlight/pwm_bl.c
index eff379b234cc..ae3c6b6fd5db 100644
--- a/drivers/video/backlight/pwm_bl.c
+++ b/drivers/video/backlight/pwm_bl.c
@@ -271,19 +271,18 @@ static int pwm_backlight_probe(struct platform_device *pdev)
}
pb->pwm = devm_pwm_get(&pdev->dev, NULL);
- if (IS_ERR(pb->pwm)) {
- ret = PTR_ERR(pb->pwm);
- if (ret == -EPROBE_DEFER)
- goto err_alloc;
-
+ if (IS_ERR(pb->pwm) && PTR_ERR(pb->pwm) != -EPROBE_DEFER
+ && !pdev->dev.of_node) {
dev_err(&pdev->dev, "unable to request PWM, trying legacy API\n");
pb->legacy = true;
pb->pwm = pwm_request(data->pwm_id, "pwm-backlight");
- if (IS_ERR(pb->pwm)) {
- dev_err(&pdev->dev, "unable to request legacy PWM\n");
- ret = PTR_ERR(pb->pwm);
- goto err_alloc;
- }
+ }
+
+ if (IS_ERR(pb->pwm)) {
+ ret = PTR_ERR(pb->pwm);
+ if (ret != -EPROBE_DEFER)
+ dev_err(&pdev->dev, "unable to request PWM\n");
+ goto err_alloc;
}
dev_dbg(&pdev->dev, "got pwm for backlight\n");