cb2025d250
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>
82 lines
2.1 KiB
C
82 lines
2.1 KiB
C
/*
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* rcar_du_plane.h -- R-Car Display Unit Planes
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*
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* Copyright (C) 2013 Renesas Corporation
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*
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* Contact: Laurent Pinchart (laurent.pinchart@ideasonboard.com)
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*/
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#ifndef __RCAR_DU_PLANE_H__
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#define __RCAR_DU_PLANE_H__
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#include <linux/mutex.h>
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#include <drm/drmP.h>
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#include <drm/drm_crtc.h>
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struct rcar_du_format_info;
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struct rcar_du_group;
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/* The RCAR DU has 8 hardware planes, shared between KMS planes and CRTCs. As
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* using KMS planes requires at least one of the CRTCs being enabled, no more
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* than 7 KMS planes can be available. We thus create 7 KMS planes and
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* 9 software planes (one for each KMS planes and one for each CRTC).
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*/
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#define RCAR_DU_NUM_KMS_PLANES 7
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#define RCAR_DU_NUM_HW_PLANES 8
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#define RCAR_DU_NUM_SW_PLANES 9
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struct rcar_du_plane {
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struct rcar_du_group *group;
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struct drm_crtc *crtc;
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bool enabled;
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int hwindex; /* 0-based, -1 means unused */
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unsigned int alpha;
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unsigned int colorkey;
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unsigned int zpos;
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const struct rcar_du_format_info *format;
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unsigned long dma[2];
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unsigned int pitch;
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unsigned int width;
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unsigned int height;
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unsigned int src_x;
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unsigned int src_y;
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unsigned int dst_x;
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unsigned int dst_y;
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};
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struct rcar_du_planes {
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struct rcar_du_plane planes[RCAR_DU_NUM_SW_PLANES];
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unsigned int free;
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struct mutex lock;
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struct drm_property *alpha;
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struct drm_property *colorkey;
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struct drm_property *zpos;
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};
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int rcar_du_planes_init(struct rcar_du_group *rgrp);
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int rcar_du_planes_register(struct rcar_du_group *rgrp);
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void rcar_du_plane_setup(struct rcar_du_plane *plane);
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void rcar_du_plane_update_base(struct rcar_du_plane *plane);
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void rcar_du_plane_compute_base(struct rcar_du_plane *plane,
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struct drm_framebuffer *fb);
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int rcar_du_plane_reserve(struct rcar_du_plane *plane,
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const struct rcar_du_format_info *format);
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void rcar_du_plane_release(struct rcar_du_plane *plane);
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#endif /* __RCAR_DU_PLANE_H__ */
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