drm/mediatek: Add DRM Driver for Mediatek SoC MT8173.

This patch adds an initial DRM driver for the Mediatek MT8173 DISP
subsystem. It currently supports two fixed output streams from the
OVL0/OVL1 sources to the DSI0/DPI0 sinks, respectively.

Signed-off-by: CK Hu <ck.hu@mediatek.com>
Signed-off-by: YT Shen <yt.shen@mediatek.com>
Signed-off-by: Daniel Kurtz <djkurtz@chromium.org>
Signed-off-by: Bibby Hsieh <bibby.hsieh@mediatek.com>
Signed-off-by: Mao Huang <littlecvr@chromium.org>
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>

1 files changed, 59 insertions, 0 deletions

diff --git a/drivers/gpu/drm/mediatek/mtk_drm_plane.h b/drivers/gpu/drm/mediatek/mtk_drm_plane.h
new file mode 100644
index 000000000000..72a7b3e4c126
--- /dev/null
+++ b/drivers/gpu/drm/mediatek/mtk_drm_plane.h
@@ -0,0 +1,59 @@
+/*
+ * Copyright (c) 2015 MediaTek Inc.
+ * Author: CK Hu <ck.hu@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_DRM_PLANE_H_
+#define _MTK_DRM_PLANE_H_
+
+#include <drm/drm_crtc.h>
+#include <linux/types.h>
+
+struct mtk_drm_plane {
+	struct drm_plane		base;
+	unsigned int			idx;
+};
+
+struct mtk_plane_pending_state {
+	bool				config;
+	bool				enable;
+	dma_addr_t			addr;
+	unsigned int			pitch;
+	unsigned int			format;
+	unsigned int			x;
+	unsigned int			y;
+	unsigned int			width;
+	unsigned int			height;
+	bool				dirty;
+};
+
+struct mtk_plane_state {
+	struct drm_plane_state		base;
+	struct mtk_plane_pending_state	pending;
+};
+
+static inline struct mtk_drm_plane *to_mtk_plane(struct drm_plane *plane)
+{
+	return container_of(plane, struct mtk_drm_plane, base);
+}
+
+static inline struct mtk_plane_state *
+to_mtk_plane_state(struct drm_plane_state *state)
+{
+	return container_of(state, struct mtk_plane_state, base);
+}
+
+int mtk_plane_init(struct drm_device *dev, struct mtk_drm_plane *mtk_plane,
+		   unsigned long possible_crtcs, enum drm_plane_type type,
+		   unsigned int zpos);
+
+#endif