1/*
 2 * rcar_du_crtc.h  --  R-Car Display Unit CRTCs
 3 *
 4 * Copyright (C) 2013-2014 Renesas Electronics Corporation
 5 *
 6 * Contact: Laurent Pinchart (laurent.pinchart@ideasonboard.com)
 7 *
 8 * This program is free software; you can redistribute it and/or modify
 9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
12 */
13
14#ifndef __RCAR_DU_CRTC_H__
15#define __RCAR_DU_CRTC_H__
16
17#include <linux/mutex.h>
18#include <linux/wait.h>
19
20#include <drm/drmP.h>
21#include <drm/drm_crtc.h>
22
23struct rcar_du_group;
24struct rcar_du_vsp;
25
26/**
27 * struct rcar_du_crtc - the CRTC, representing a DU superposition processor
28 * @crtc: base DRM CRTC
29 * @clock: the CRTC functional clock
30 * @extclock: external pixel dot clock (optional)
31 * @mmio_offset: offset of the CRTC registers in the DU MMIO block
32 * @index: CRTC software and hardware index
33 * @started: whether the CRTC has been started and is running
34 * @event: event to post when the pending page flip completes
35 * @flip_wait: wait queue used to signal page flip completion
36 * @outputs: bitmask of the outputs (enum rcar_du_output) driven by this CRTC
37 * @group: CRTC group this CRTC belongs to
38 */
39struct rcar_du_crtc {
40	struct drm_crtc crtc;
41
42	struct clk *clock;
43	struct clk *extclock;
44	unsigned int mmio_offset;
45	unsigned int index;
46	bool started;
47
48	struct drm_pending_vblank_event *event;
49	wait_queue_head_t flip_wait;
50
51	unsigned int outputs;
52
53	struct rcar_du_group *group;
54	struct rcar_du_vsp *vsp;
55};
56
57#define to_rcar_crtc(c)	container_of(c, struct rcar_du_crtc, crtc)
58
59enum rcar_du_output {
60	RCAR_DU_OUTPUT_DPAD0,
61	RCAR_DU_OUTPUT_DPAD1,
62	RCAR_DU_OUTPUT_LVDS0,
63	RCAR_DU_OUTPUT_LVDS1,
64	RCAR_DU_OUTPUT_TCON,
65	RCAR_DU_OUTPUT_MAX,
66};
67
68int rcar_du_crtc_create(struct rcar_du_group *rgrp, unsigned int index);
69void rcar_du_crtc_enable_vblank(struct rcar_du_crtc *rcrtc, bool enable);
70void rcar_du_crtc_suspend(struct rcar_du_crtc *rcrtc);
71void rcar_du_crtc_resume(struct rcar_du_crtc *rcrtc);
72
73void rcar_du_crtc_route_output(struct drm_crtc *crtc,
74			       enum rcar_du_output output);
75
76#endif /* __RCAR_DU_CRTC_H__ */