video: bridge: Allow GPIOs to be optional

Some video bridges will not have GPIOs to control reset, etc. Allow these
to be optional.

Signed-off-by: Simon Glass <sjg@chromium.org>

diff --git a/drivers/video/bridge/video-bridge-uclass.c b/drivers/video/bridge/video-bridge-uclass.c
index 6c5990f..07270ba 100644 (file)
--- a/drivers/video/bridge/video-bridge-uclass.c
+++ b/drivers/video/bridge/video-bridge-uclass.c
@@ -55,7 +55,8 @@ static int video_bridge_pre_probe(struct udevice *dev)
                                   &uc_priv->sleep, GPIOD_IS_OUT);
        if (ret) {
                debug("%s: Could not decode sleep-gpios (%d)\n", __func__, ret);
-               return ret;
+               if (ret != -ENOENT)
+                       return ret;
        }
        /*
         * Drop this for now as we do not have driver model pinctrl support
@@ -70,7 +71,8 @@ static int video_bridge_pre_probe(struct udevice *dev)
                                   GPIOD_IS_OUT);
        if (ret) {
                debug("%s: Could not decode reset-gpios (%d)\n", __func__, ret);
-               return ret;
+               if (ret != -ENOENT)
+                       return ret;
        }
        /*
         * Drop this for now as we do not have driver model pinctrl support
@@ -83,9 +85,10 @@ static int video_bridge_pre_probe(struct udevice *dev)
         */
        ret = gpio_request_by_name(dev, "hotplug-gpios", 0, &uc_priv->hotplug,
                                   GPIOD_IS_IN);
-       if (ret && ret != -ENOENT) {
+       if (ret) {
                debug("%s: Could not decode hotplug (%d)\n", __func__, ret);
-               return ret;
+               if (ret != -ENOENT)
+                       return ret;
        }
 
        return 0;