Release 4.11 drivers/gpu/drm/rcar-du/rcar_du_crtc.h

/*
 * rcar_du_crtc.h  --  R-Car Display Unit CRTCs
 *
 * Copyright (C) 2013-2014 Renesas Electronics Corporation
 *
 * Contact: Laurent Pinchart (laurent.pinchart@ideasonboard.com)
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 */

#ifndef __RCAR_DU_CRTC_H__

#define __RCAR_DU_CRTC_H__

#include <linux/mutex.h>
#include <linux/wait.h>

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

struct rcar_du_group;
struct rcar_du_vsp;

/**
 * struct rcar_du_crtc - the CRTC, representing a DU superposition processor
 * @crtc: base DRM CRTC
 * @clock: the CRTC functional clock
 * @extclock: external pixel dot clock (optional)
 * @mmio_offset: offset of the CRTC registers in the DU MMIO block
 * @index: CRTC software and hardware index
 * @started: whether the CRTC has been started and is running
 * @event: event to post when the pending page flip completes
 * @flip_wait: wait queue used to signal page flip completion
 * @outputs: bitmask of the outputs (enum rcar_du_output) driven by this CRTC
 * @group: CRTC group this CRTC belongs to
 */

struct rcar_du_crtc {
	
struct drm_crtc crtc;

	
struct clk *clock;
	
struct clk *extclock;
	
unsigned int mmio_offset;
	
unsigned int index;
	
bool started;

	
struct drm_pending_vblank_event *event;
	
wait_queue_head_t flip_wait;

	
unsigned int outputs;

	
struct rcar_du_group *group;
	
struct rcar_du_vsp *vsp;
};


#define to_rcar_crtc(c)	container_of(c, struct rcar_du_crtc, crtc)


enum rcar_du_output {
	
RCAR_DU_OUTPUT_DPAD0,
	
RCAR_DU_OUTPUT_DPAD1,
	
RCAR_DU_OUTPUT_LVDS0,
	
RCAR_DU_OUTPUT_LVDS1,
	
RCAR_DU_OUTPUT_TCON,
	
RCAR_DU_OUTPUT_MAX,
};

int rcar_du_crtc_create(struct rcar_du_group *rgrp, unsigned int index);
void rcar_du_crtc_enable_vblank(struct rcar_du_crtc *rcrtc, bool enable);
void rcar_du_crtc_suspend(struct rcar_du_crtc *rcrtc);
void rcar_du_crtc_resume(struct rcar_du_crtc *rcrtc);

void rcar_du_crtc_route_output(struct drm_crtc *crtc,
			       enum rcar_du_output output);

#endif /* __RCAR_DU_CRTC_H__ */
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Directory: drivers/gpu/drm/rcar-du

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