1 files changed, 111 insertions, 0 deletions
diff --git a/drivers/video/bridge/video-bridge-uclass.c b/drivers/video/bridge/video-bridge-uclass.c
new file mode 100644
index 0000000..e1ea428
--- /dev/null
+++ b/drivers/video/bridge/video-bridge-uclass.c
@@ -0,0 +1,111 @@
+/*
+ * Copyright (C) 2015 Google, Inc
+ * Written by Simon Glass <sjg@chromium.org>
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#include <common.h>
+#include <dm.h>
+#include <errno.h>
+#include <video_bridge.h>
+
+int video_bridge_set_backlight(struct udevice *dev, int percent)
+{
+	struct video_bridge_ops *ops = video_bridge_get_ops(dev);
+
+	if (!ops->set_backlight)
+		return -ENOSYS;
+
+	return ops->set_backlight(dev, percent);
+}
+
+int video_bridge_attach(struct udevice *dev)
+{
+	struct video_bridge_ops *ops = video_bridge_get_ops(dev);
+
+	if (!ops->attach)
+		return -ENOSYS;
+
+	return ops->attach(dev);
+}
+
+int video_bridge_check_attached(struct udevice *dev)
+{
+	struct video_bridge_priv *uc_priv = dev_get_uclass_priv(dev);
+	struct video_bridge_ops *ops = video_bridge_get_ops(dev);
+	int ret;
+
+	if (!ops->check_attached) {
+		ret = dm_gpio_get_value(&uc_priv->hotplug);
+
+		return ret > 0 ? 0 : ret == 0 ? -ENOTCONN : ret;
+	}
+
+	return ops->check_attached(dev);
+}
+
+static int video_bridge_pre_probe(struct udevice *dev)
+{
+	struct video_bridge_priv *uc_priv = dev_get_uclass_priv(dev);
+	int ret;
+
+	debug("%s\n", __func__);
+	ret = gpio_request_by_name(dev, "sleep-gpios", 0,
+				   &uc_priv->sleep, GPIOD_IS_OUT);
+	if (ret) {
+		debug("%s: Could not decode sleep-gpios (%d)\n", __func__, ret);
+		return ret;
+	}
+	ret = dm_gpio_set_pull(&uc_priv->sleep, GPIO_PULL_NONE);
+	if (ret) {
+		debug("%s: Could not set sleep pull value\n", __func__);
+		return ret;
+	}
+	ret = gpio_request_by_name(dev, "reset-gpios", 0, &uc_priv->reset,
+				   GPIOD_IS_OUT);
+	if (ret) {
+		debug("%s: Could not decode reset-gpios (%d)\n", __func__, ret);
+		return ret;
+	}
+	ret = dm_gpio_set_pull(&uc_priv->reset, GPIO_PULL_NONE);
+	if (ret) {
+		debug("%s: Could not set reset pull value\n", __func__);
+		return ret;
+	}
+	ret = gpio_request_by_name(dev, "hotplug-gpios", 0, &uc_priv->hotplug,
+				   GPIOD_IS_IN);
+	if (ret && ret != -ENOENT) {
+		debug("%s: Could not decode hotplug (%d)\n", __func__, ret);
+		return ret;
+	}
+
+	return 0;
+}
+
+int video_bridge_set_active(struct udevice *dev, bool active)
+{
+	struct video_bridge_priv *uc_priv = dev_get_uclass_priv(dev);
+	int ret;
+
+	debug("%s: %d\n", __func__, active);
+	ret = dm_gpio_set_value(&uc_priv->sleep, !active);
+	if (ret)
+		return ret;
+	if (active) {
+		ret = dm_gpio_set_value(&uc_priv->reset, true);
+		if (ret)
+			return ret;
+		udelay(10);
+		ret = dm_gpio_set_value(&uc_priv->reset, false);
+	}
+
+	return ret;
+}
+
+UCLASS_DRIVER(video_bridge) = {
+	.id		= UCLASS_VIDEO_BRIDGE,
+	.name		= "video_bridge",
+	.per_device_auto_alloc_size	= sizeof(struct video_bridge_priv),
+	.pre_probe	= video_bridge_pre_probe,
+};