drm: zte: add initial vou drm driver

It adds the initial ZTE VOU display controller DRM driver.  There are
still some features to be added, like overlay plane, scaling, and more
output devices support.  But it's already useful with dual CRTCs and
HDMI monitor working.

Signed-off-by: Shawn Guo <shawn.guo@linaro.org>

1 files changed, 46 insertions, 0 deletions

diff --git a/drivers/gpu/drm/zte/zx_vou.h b/drivers/gpu/drm/zte/zx_vou.h
new file mode 100644
index 000000000000..349e06cd86f4
--- /dev/null
+++ b/drivers/gpu/drm/zte/zx_vou.h
@@ -0,0 +1,46 @@
+/*
+ * Copyright 2016 Linaro Ltd.
+ * Copyright 2016 ZTE Corporation.
+ *
+ * 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.
+ *
+ */
+
+#ifndef __ZX_VOU_H__
+#define __ZX_VOU_H__
+
+#define VOU_CRTC_MASK		0x3
+
+/* VOU output interfaces */
+enum vou_inf_id {
+	VOU_HDMI	= 0,
+	VOU_RGB_LCD	= 1,
+	VOU_TV_ENC	= 2,
+	VOU_MIPI_DSI	= 3,
+	VOU_LVDS	= 4,
+	VOU_VGA		= 5,
+};
+
+enum vou_inf_data_sel {
+	VOU_YUV444	= 0,
+	VOU_RGB_101010	= 1,
+	VOU_RGB_888	= 2,
+	VOU_RGB_666	= 3,
+};
+
+struct vou_inf {
+	enum vou_inf_id id;
+	enum vou_inf_data_sel data_sel;
+	u32 clocks_en_bits;
+	u32 clocks_sel_bits;
+};
+
+void vou_inf_enable(const struct vou_inf *inf, struct drm_crtc *crtc);
+void vou_inf_disable(const struct vou_inf *inf, struct drm_crtc *crtc);
+
+int zx_vou_enable_vblank(struct drm_device *drm, unsigned int pipe);
+void zx_vou_disable_vblank(struct drm_device *drm, unsigned int pipe);
+
+#endif /* __ZX_VOU_H__ */