1 files changed, 83 insertions, 0 deletions
diff --git a/roms/u-boot/drivers/video/display-uclass.c b/roms/u-boot/drivers/video/display-uclass.c
new file mode 100644
index 000000000..068108e91
--- /dev/null
+++ b/roms/u-boot/drivers/video/display-uclass.c
@@ -0,0 +1,83 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright 2014 Google Inc.
+ */
+
+#include <common.h>
+#include <dm.h>
+#include <display.h>
+#include <edid.h>
+#include <errno.h>
+
+int display_read_edid(struct udevice *dev, u8 *buf, int buf_size)
+{
+	struct dm_display_ops *ops = display_get_ops(dev);
+
+	if (!ops || !ops->read_edid)
+		return -ENOSYS;
+	return ops->read_edid(dev, buf, buf_size);
+}
+
+int display_enable(struct udevice *dev, int panel_bpp,
+			const struct display_timing *timing)
+{
+	struct dm_display_ops *ops = display_get_ops(dev);
+	struct display_plat *disp_uc_plat;
+	int ret;
+
+	if (!ops || !ops->enable)
+		return -ENOSYS;
+	ret = ops->enable(dev, panel_bpp, timing);
+	if (ret)
+		return ret;
+
+	disp_uc_plat = dev_get_uclass_plat(dev);
+	disp_uc_plat->in_use = true;
+
+	return 0;
+}
+
+static bool display_mode_valid(void *priv, const struct display_timing *timing)
+{
+	struct udevice *dev = priv;
+	struct dm_display_ops *ops = display_get_ops(dev);
+
+	if (ops && ops->mode_valid)
+		return ops->mode_valid(dev, timing);
+
+	return true;
+}
+
+int display_read_timing(struct udevice *dev, struct display_timing *timing)
+{
+	struct dm_display_ops *ops = display_get_ops(dev);
+	int panel_bits_per_colour;
+	u8 buf[EDID_EXT_SIZE];
+	int ret;
+
+	if (ops && ops->read_timing)
+		return ops->read_timing(dev, timing);
+
+	if (!ops || !ops->read_edid)
+		return -ENOSYS;
+	ret = ops->read_edid(dev, buf, sizeof(buf));
+	if (ret < 0)
+		return ret;
+
+	return edid_get_timing_validate(buf, ret, timing,
+					&panel_bits_per_colour,
+					display_mode_valid, dev);
+}
+
+bool display_in_use(struct udevice *dev)
+{
+	struct display_plat *disp_uc_plat = dev_get_uclass_plat(dev);
+
+	return disp_uc_plat->in_use;
+}
+
+UCLASS_DRIVER(display) = {
+	.id		= UCLASS_DISPLAY,
+	.name		= "display",
+	.per_device_plat_auto	= sizeof(struct display_plat),
+};