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@@ -32,16 +32,18 @@ static int pwm_backlight_enable(struct udevice *dev)
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uint duty_cycle;
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int ret;
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- plat = dev_get_uclass_platdata(priv->reg);
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- debug("%s: Enable '%s', regulator '%s'/'%s'\n", __func__, dev->name,
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- priv->reg->name, plat->name);
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- ret = regulator_set_enable(priv->reg, true);
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- if (ret) {
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- debug("%s: Cannot enable regulator for PWM '%s'\n", __func__,
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- dev->name);
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- return ret;
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+ if (priv->reg) {
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+ plat = dev_get_uclass_platdata(priv->reg);
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+ debug("%s: Enable '%s', regulator '%s'/'%s'\n", __func__,
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+ dev->name, priv->reg->name, plat->name);
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+ ret = regulator_set_enable(priv->reg, true);
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+ if (ret) {
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+ debug("%s: Cannot enable regulator for PWM '%s'\n",
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+ __func__, dev->name);
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+ return ret;
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+ }
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+ mdelay(120);
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}
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- mdelay(120);
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duty_cycle = priv->period_ns * (priv->default_level - priv->min_level) /
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(priv->max_level - priv->min_level + 1);
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@@ -68,10 +70,8 @@ static int pwm_backlight_ofdata_to_platdata(struct udevice *dev)
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debug("%s: start\n", __func__);
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ret = uclass_get_device_by_phandle(UCLASS_REGULATOR, dev,
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"power-supply", &priv->reg);
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- if (ret) {
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+ if (ret)
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debug("%s: Cannot get power supply: ret=%d\n", __func__, ret);
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- return ret;
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- }
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ret = gpio_request_by_name(dev, "enable-gpios", 0, &priv->enable,
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GPIOD_IS_OUT);
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if (ret) {
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