diff options
| -rw-r--r-- | Documentation/devicetree/bindings/video/backlight/pm8941-wled.txt | 2 | ||||
| -rw-r--r-- | drivers/video/backlight/88pm860x_bl.c | 1 | ||||
| -rw-r--r-- | drivers/video/backlight/adp8860_bl.c | 1 | ||||
| -rw-r--r-- | drivers/video/backlight/adp8870_bl.c | 1 | ||||
| -rw-r--r-- | drivers/video/backlight/lp855x_bl.c | 1 | ||||
| -rw-r--r-- | drivers/video/backlight/pm8941-wled.c | 13 | ||||
| -rw-r--r-- | drivers/video/backlight/pwm_bl.c | 19 |
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"); |