led: pwm: Use NOP uclass driver for top-level node

The top level DT node of pwm-leds is not a LED itself, bind NOP uclass
driver to it, and bind different LED uclass driver to its subnodes which
represent the actual LEDs. This change removes the top-level node from
the 'led list' command output and is based on the commit 01074697801b
("led: gpio: Use NOP uclass driver for top-level node").

Signed-off-by: Stefan Herbrechtsmeier <stefan.herbrechtsmeier@weidmueller.com>

diff --git a/drivers/led/led_pwm.c b/drivers/led/led_pwm.c
index 10bd163..0ebae35 100644 (file)
--- a/drivers/led/led_pwm.c
+++ b/drivers/led/led_pwm.c
@@ -95,27 +95,17 @@ static enum led_state_t led_pwm_get_state(struct udevice *dev)
 static int led_pwm_probe(struct udevice *dev)
 {
        struct led_pwm_priv *priv = dev_get_priv(dev);
-       struct led_uc_plat *uc_plat = dev_get_uclass_plat(dev);
-
-       /* Ignore the top-level LED node */
-       if (!uc_plat->label)
-               return 0;
 
        return led_pwm_set_state(dev, (priv->enabled) ? LEDST_ON : LEDST_OFF);
 }
 
 static int led_pwm_of_to_plat(struct udevice *dev)
 {
-       struct led_uc_plat *uc_plat = dev_get_uclass_plat(dev);
        struct led_pwm_priv *priv = dev_get_priv(dev);
        struct ofnode_phandle_args args;
        uint def_brightness, max_brightness;
        int ret;
 
-       /* Ignore the top-level LED node */
-       if (!uc_plat->label)
-               return 0;
-
        ret = dev_read_phandle_with_args(dev, "pwms", "#pwm-cells", 0, 0, &args);
        if (ret)
                return ret;
@@ -173,10 +163,15 @@ static const struct udevice_id led_pwm_ids[] = {
 U_BOOT_DRIVER(led_pwm) = {
        .name = LEDS_PWM_DRIVER_NAME,
        .id = UCLASS_LED,
-       .of_match = led_pwm_ids,
        .ops = &led_pwm_ops,
        .priv_auto = sizeof(struct led_pwm_priv),
-       .bind = led_pwm_bind,
        .probe = led_pwm_probe,
        .of_to_plat = led_pwm_of_to_plat,
 };
+
+U_BOOT_DRIVER(led_pwm_wrap) = {
+       .name = LEDS_PWM_DRIVER_NAME "_wrap",
+       .id = UCLASS_NOP,
+       .of_match = led_pwm_ids,
+       .bind = led_pwm_bind,
+};