drm/mediatek: Add HDMI support

This patch adds drivers for the HDMI bridge connected to the DPI0
display subsystem function block, for the HDMI DDC block, and for
the HDMI PHY to support HDMI output.
This includes an interface to the generic hdmi-codec driver to start
or stop audio playback and to retrieve ELD (EDID like data) to limit the
supported audio formats to the HDMI sink capabilities.

Signed-off-by: Jie Qiu <jie.qiu@mediatek.com>
Signed-off-by: Junzhi Zhao <junzhi.zhao@mediatek.com>
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>

1 files changed, 26 insertions, 0 deletions

diff --git a/drivers/gpu/drm/mediatek/mtk_cec.h b/drivers/gpu/drm/mediatek/mtk_cec.h
new file mode 100644
index 000000000000..10057b7eabec
--- /dev/null
+++ b/drivers/gpu/drm/mediatek/mtk_cec.h
@@ -0,0 +1,26 @@
+/*
+ * Copyright (c) 2014 MediaTek Inc.
+ * Author: Jie Qiu <jie.qiu@mediatek.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ */
+#ifndef _MTK_CEC_H
+#define _MTK_CEC_H
+
+#include <linux/types.h>
+
+struct device;
+
+void mtk_cec_set_hpd_event(struct device *dev,
+			   void (*hotplug_event)(bool hpd, struct device *dev),
+			   struct device *hdmi_dev);
+bool mtk_cec_hpd_high(struct device *dev);
+
+#endif /* _MTK_CEC_H */