Display drivers kernel project initial snapshot

This change brings msm display driver including sde,
dp, dsi, rotator, dsi pll and dp pll from base 4.19 kernel
project. It is first source code snapshot from base kernel project.

Change-Id: Iec864c064ce5ea04e170f24414c728684002f284
Signed-off-by: Narendra Muppalla <NarendraM@codeaurora.org>

msm/dp/dp_ctrl.h

@@ -0,0 +1,48 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * Copyright (c) 2012-2019, The Linux Foundation. All rights reserved.
+ */
+
+#ifndef _DP_CTRL_H_
+#define _DP_CTRL_H_
+
+#include "dp_aux.h"
+#include "dp_panel.h"
+#include "dp_link.h"
+#include "dp_parser.h"
+#include "dp_power.h"
+#include "dp_catalog.h"
+
+struct dp_ctrl {
+	int (*init)(struct dp_ctrl *dp_ctrl, bool flip, bool reset);
+	void (*deinit)(struct dp_ctrl *dp_ctrl);
+	int (*on)(struct dp_ctrl *dp_ctrl, bool mst_mode, bool fec_en,
+			bool shallow);
+	void (*off)(struct dp_ctrl *dp_ctrl);
+	void (*abort)(struct dp_ctrl *dp_ctrl);
+	void (*isr)(struct dp_ctrl *dp_ctrl);
+	bool (*handle_sink_request)(struct dp_ctrl *dp_ctrl);
+	void (*process_phy_test_request)(struct dp_ctrl *dp_ctrl);
+	int (*link_maintenance)(struct dp_ctrl *dp_ctrl);
+	int (*stream_on)(struct dp_ctrl *dp_ctrl, struct dp_panel *panel);
+	void (*stream_off)(struct dp_ctrl *dp_ctrl, struct dp_panel *panel);
+	void (*stream_pre_off)(struct dp_ctrl *dp_ctrl, struct dp_panel *panel);
+	void (*set_mst_channel_info)(struct dp_ctrl *dp_ctrl,
+			enum dp_stream_id strm,
+			u32 ch_start_slot, u32 ch_tot_slots);
+};
+
+struct dp_ctrl_in {
+	struct device *dev;
+	struct dp_panel *panel;
+	struct dp_aux *aux;
+	struct dp_link *link;
+	struct dp_parser *parser;
+	struct dp_power *power;
+	struct dp_catalog_ctrl *catalog;
+};
+
+struct dp_ctrl *dp_ctrl_get(struct dp_ctrl_in *in);
+void dp_ctrl_put(struct dp_ctrl *dp_ctrl);
+
+#endif /* _DP_CTRL_H_ */