Release 4.17 drivers/gpu/drm/tegra/hub.h

/*
 * Copyright (C) 2017 NVIDIA CORPORATION.  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 as
 * published by the Free Software Foundation.
 */

#ifndef TEGRA_HUB_H

#define TEGRA_HUB_H 1

#include <drm/drmP.h>
#include <drm/drm_plane.h>

#include "plane.h"

struct tegra_dc;


struct tegra_windowgroup {
	
unsigned int usecount;
	
struct mutex lock;

	
unsigned int index;
	
struct device *parent;
	
struct reset_control *rst;
};


struct tegra_shared_plane {
	
struct tegra_plane base;
	
struct tegra_windowgroup *wgrp;
};


static inline struct tegra_shared_plane *

to_tegra_shared_plane(struct drm_plane *plane)
{
	return container_of(plane, struct tegra_shared_plane, base.base);
}

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struct tegra_display_hub_soc {
	
unsigned int num_wgrps;
};


struct tegra_display_hub {
	
struct drm_private_obj base;
	
struct host1x_client client;
	
struct clk *clk_disp;
	
struct clk *clk_dsc;
	
struct clk *clk_hub;
	
struct reset_control *rst;

	
const struct tegra_display_hub_soc *soc;
	
struct tegra_windowgroup *wgrps;
};


static inline struct tegra_display_hub *

to_tegra_display_hub(struct host1x_client *client)
{
	return container_of(client, struct tegra_display_hub, client);
}

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struct tegra_display_hub_state {
	
struct drm_private_state base;

	
struct tegra_dc *dc;
	
unsigned long rate;
	
struct clk *clk;
};


static inline struct tegra_display_hub_state *

to_tegra_display_hub_state(struct drm_private_state *priv)
{
	return container_of(priv, struct tegra_display_hub_state, base);
}

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struct tegra_dc;
struct tegra_plane;

int tegra_display_hub_prepare(struct tegra_display_hub *hub);
void tegra_display_hub_cleanup(struct tegra_display_hub *hub);

struct drm_plane *tegra_shared_plane_create(struct drm_device *drm,
					    struct tegra_dc *dc,
					    unsigned int wgrp,
					    unsigned int index);

int tegra_display_hub_atomic_check(struct drm_device *drm,
				   struct drm_atomic_state *state);
void tegra_display_hub_atomic_commit(struct drm_device *drm,
				     struct drm_atomic_state *state);


#define DC_CMD_IHUB_COMMON_MISC_CTL 0x068

#define  LATENCY_EVENT (1 << 3)


#define DC_DISP_IHUB_COMMON_DISPLAY_FETCH_METER 0x451

#define  CURS_SLOTS(x) (((x) & 0xff) << 8)

#define  WGRP_SLOTS(x) (((x) & 0xff) << 0)

#endif /* TEGRA_HUB_H */
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Directory: drivers/gpu/drm/tegra

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