dm: video: Update pwm_backlight to support livetree

Update this driver to support a live device tree.

Signed-off-by: Simon Glass <sjg@chromium.org>
Acked-by: Anatolij Gustschin <agust@denx.de>
Tested-by: Marcel Ziswiler <marcel.ziswiler@toradex.com>
Tested-on: Beaver, Jetson-TK1

diff --git a/drivers/video/pwm_backlight.c b/drivers/video/pwm_backlight.c
index 3697f4905c92604477cd38d7aa45a6b450c582b2..fbd7bf783891655f3bedc10333d7f978ce0cdd0f 100644 (file)
--- a/drivers/video/pwm_backlight.c
+++ b/drivers/video/pwm_backlight.c
@@ -28,11 +28,13 @@ struct pwm_backlight_priv {
 static int pwm_backlight_enable(struct udevice *dev)
 {
        struct pwm_backlight_priv *priv = dev_get_priv(dev);
+       struct dm_regulator_uclass_platdata *plat;
        uint duty_cycle;
        int ret;
 
-       debug("%s: Enable '%s', regulator '%s'\n", __func__, dev->name,
-             priv->reg->name);
+       plat = dev_get_uclass_platdata(priv->reg);
+       debug("%s: Enable '%s', regulator '%s'/'%s'\n", __func__, dev->name,
+             priv->reg->name, plat->name);
        ret = regulator_set_enable(priv->reg, true);
        if (ret) {
                debug("%s: Cannot enable regulator for PWM '%s'\n", __func__,
@@ -59,12 +61,11 @@ static int pwm_backlight_enable(struct udevice *dev)
 static int pwm_backlight_ofdata_to_platdata(struct udevice *dev)
 {
        struct pwm_backlight_priv *priv = dev_get_priv(dev);
-       struct fdtdec_phandle_args args;
-       const void *blob = gd->fdt_blob;
-       int node = dev_of_offset(dev);
+       struct ofnode_phandle_args args;
        int index, ret, count, len;
        const u32 *cell;
 
+       debug("%s: start\n", __func__);
        ret = uclass_get_device_by_phandle(UCLASS_REGULATOR, dev,
                                           "power-supply", &priv->reg);
        if (ret) {
@@ -79,14 +80,14 @@ static int pwm_backlight_ofdata_to_platdata(struct udevice *dev)
                if (ret != -ENOENT)
                        return ret;
        }
-       ret = fdtdec_parse_phandle_with_args(blob, node, "pwms", "#pwm-cells",
-                                            0, 0, &args);
+       ret = dev_read_phandle_with_args(dev, "pwms", "#pwm-cells", 0, 0,
+                                        &args);
        if (ret) {
                debug("%s: Cannot get PWM phandle: ret=%d\n", __func__, ret);
                return ret;
        }
 
-       ret = uclass_get_device_by_of_offset(UCLASS_PWM, args.node, &priv->pwm);
+       ret = uclass_get_device_by_ofnode(UCLASS_PWM, args.node, &priv->pwm);
        if (ret) {
                debug("%s: Cannot get PWM: ret=%d\n", __func__, ret);
                return ret;
@@ -94,8 +95,8 @@ static int pwm_backlight_ofdata_to_platdata(struct udevice *dev)
        priv->channel = args.args[0];
        priv->period_ns = args.args[1];
 
-       index = fdtdec_get_int(blob, node, "default-brightness-level", 255);
-       cell = fdt_getprop(blob, node, "brightness-levels", &len);
+       index = dev_read_u32_default(dev, "default-brightness-level", 255);
+       cell = dev_read_prop(dev, "brightness-levels", &len);
        count = len / sizeof(u32);
        if (cell && count > index) {
                priv->default_level = fdt32_to_cpu(cell[index]);
@@ -104,6 +105,7 @@ static int pwm_backlight_ofdata_to_platdata(struct udevice *dev)
                priv->default_level = index;
                priv->max_level = 255;
        }
+       debug("%s: done\n", __func__);
 
 
        return 0;