drm/sde: add bridge chip support for drm driver

Display Bridgechip Abstration layer is a common framework to support
different kind of bridge chips with multi client accessing. This
change is to add a DRM bridge driver and hook it up with DBA
framework.

Change-Id: Ie225a7cdb55a4982199c1735c37986950c5fad05
Signed-off-by: Jin Li <jinl@codeaurora.org>
Signed-off-by: Yunyun Cao <yunyunc@codeaurora.org>

1 files changed, 65 insertions, 0 deletions

diff --git a/drivers/gpu/drm/msm/dba_bridge.h b/drivers/gpu/drm/msm/dba_bridge.h
new file mode 100644
index 000000000000..42a43846c3c6
--- /dev/null
+++ b/drivers/gpu/drm/msm/dba_bridge.h
@@ -0,0 +1,65 @@
+/*
+ * Copyright (c) 2016-2017, The Linux Foundation. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 and
+ * only 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 _DBA_BRIDGE_H_
+#define _DBA_BRIDGE_H_
+
+#include <linux/types.h>
+#include <drm/drmP.h>
+#include <drm/drm_crtc.h>
+#include <drm/drm_crtc_helper.h>
+
+#include "msm_drv.h"
+
+/**
+ * struct dba_bridge_init - Init parameters for DBA bridge
+ * @client_name:          Client's name who calls the init
+ * @chip_name:            Bridge chip name
+ * @id:                   Bridge driver index
+ * @display:              Private display handle
+ * @hdmi_mode:            HDMI or DVI mode for the sink
+ * @num_of_input_lanes:   Number of input lanes in case of DSI/LVDS
+ * @precede_bridge:       Precede bridge chip
+ * @pluggable:            If it's pluggable
+ */
+struct dba_bridge_init {
+	const char *client_name;
+	const char *chip_name;
+	u32 id;
+	void *display;
+	bool hdmi_mode;
+	u32 num_of_input_lanes;
+	struct drm_bridge *precede_bridge;
+	bool pluggable;
+};
+
+/**
+ * dba_bridge_init - Initialize the DBA bridge
+ * @dev:           Pointer to drm device handle
+ * @encoder:       Pointer to drm encoder handle
+ * @data:          Pointer to init data
+ * Returns: pointer of struct drm_bridge
+ */
+struct drm_bridge *dba_bridge_init(struct drm_device *dev,
+				struct drm_encoder *encoder,
+				struct dba_bridge_init *data);
+
+/**
+ * dba_bridge_cleanup - Clean up the DBA bridge
+ * @bridge:           Pointer to DBA bridge handle
+ * Returns: void
+ */
+void dba_bridge_cleanup(struct drm_bridge *bridge);
+
+#endif /* _DBA_BRIDGE_H_ */