linux/drivers/gpu/drm/rcar-du/rcar_du_plane.h
Laurent Pinchart cb2025d250 drm/rcar-du: Introduce CRTCs groups
The R8A7779 DU is split in per-CRTC resources (scan-out engine, blending
unit, timings generator, ...) and device-global resources (start/stop
control, planes, ...) shared between the two CRTCs.

The R8A7790 introduced a third CRTC with its own set of global resources
This would be modeled as two separate DU device instances if it wasn't
for a handful or resources that are shared between the three CRTCs
(mostly related to input and output routing). For this reason the
R8A7790 DU must be modeled as a single device with three CRTCs, two sets
of "semi-global" resources, and a few device-global resources.

Introduce a new rcar_du_group driver-specific object, without any real
counterpart in the DU documentation, that models those semi-global
resources.

Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
2013-08-09 23:17:46 +02:00

82 lines
2.1 KiB
C

/*
* rcar_du_plane.h -- R-Car Display Unit Planes
*
* Copyright (C) 2013 Renesas 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_PLANE_H__
#define __RCAR_DU_PLANE_H__
#include <linux/mutex.h>
#include <drm/drmP.h>
#include <drm/drm_crtc.h>
struct rcar_du_format_info;
struct rcar_du_group;
/* The RCAR DU has 8 hardware planes, shared between KMS planes and CRTCs. As
* using KMS planes requires at least one of the CRTCs being enabled, no more
* than 7 KMS planes can be available. We thus create 7 KMS planes and
* 9 software planes (one for each KMS planes and one for each CRTC).
*/
#define RCAR_DU_NUM_KMS_PLANES 7
#define RCAR_DU_NUM_HW_PLANES 8
#define RCAR_DU_NUM_SW_PLANES 9
struct rcar_du_plane {
struct rcar_du_group *group;
struct drm_crtc *crtc;
bool enabled;
int hwindex; /* 0-based, -1 means unused */
unsigned int alpha;
unsigned int colorkey;
unsigned int zpos;
const struct rcar_du_format_info *format;
unsigned long dma[2];
unsigned int pitch;
unsigned int width;
unsigned int height;
unsigned int src_x;
unsigned int src_y;
unsigned int dst_x;
unsigned int dst_y;
};
struct rcar_du_planes {
struct rcar_du_plane planes[RCAR_DU_NUM_SW_PLANES];
unsigned int free;
struct mutex lock;
struct drm_property *alpha;
struct drm_property *colorkey;
struct drm_property *zpos;
};
int rcar_du_planes_init(struct rcar_du_group *rgrp);
int rcar_du_planes_register(struct rcar_du_group *rgrp);
void rcar_du_plane_setup(struct rcar_du_plane *plane);
void rcar_du_plane_update_base(struct rcar_du_plane *plane);
void rcar_du_plane_compute_base(struct rcar_du_plane *plane,
struct drm_framebuffer *fb);
int rcar_du_plane_reserve(struct rcar_du_plane *plane,
const struct rcar_du_format_info *format);
void rcar_du_plane_release(struct rcar_du_plane *plane);
#endif /* __RCAR_DU_PLANE_H__ */