cbb7fa49c7
Some VSP instances have two blending units named BRU (Blend/ROP Unit) and BRS (Blend/ROP Sub unit). The BRS is a smaller version of the BRU with only two inputs, but otherwise offers similar features and offers the same register interface. The BRU and BRS can be used exchangeably in VSP pipelines (provided no more than two inputs are needed). Due to historical reasons, the VSP1 driver implements support for both the BRU and BRS through objects named vsp1_bru. The code uses the name BRU to refer to either the BRU or the BRS, except in a few places where noted explicitly. This creates confusion. In an effort to avoid confusion, rename the vsp1_bru object and the corresponding API to vsp1_brx, and use BRx to refer to blend unit instances regardless of their type. The names BRU and BRS are retained where reference to a particular blend unit type is needed, as well as in hardware registers to stay close to the datasheet. Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> Acked-by: Kieran Bingham <kieran.bingham+renesas@ideasonboard.com> Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
74 lines
2.0 KiB
C
74 lines
2.0 KiB
C
/*
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* vsp1_drm.h -- R-Car VSP1 DRM/KMS Interface
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*
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* Copyright (C) 2015 Renesas Electronics 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 __VSP1_DRM_H__
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#define __VSP1_DRM_H__
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#include <linux/mutex.h>
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#include <linux/videodev2.h>
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#include <linux/wait.h>
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#include "vsp1_pipe.h"
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/**
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* vsp1_drm_pipeline - State for the API exposed to the DRM driver
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* @pipe: the VSP1 pipeline used for display
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* @width: output display width
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* @height: output display height
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* @force_brx_release: when set, release the BRx during the next reconfiguration
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* @wait_queue: wait queue to wait for BRx release completion
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* @du_complete: frame completion callback for the DU driver (optional)
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* @du_private: data to be passed to the du_complete callback
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*/
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struct vsp1_drm_pipeline {
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struct vsp1_pipeline pipe;
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unsigned int width;
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unsigned int height;
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bool force_brx_release;
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wait_queue_head_t wait_queue;
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/* Frame synchronisation */
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void (*du_complete)(void *, bool);
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void *du_private;
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};
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/**
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* vsp1_drm - State for the API exposed to the DRM driver
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* @pipe: the VSP1 DRM pipeline used for display
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* @lock: protects the BRU and BRS allocation
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* @inputs: source crop rectangle, destination compose rectangle and z-order
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* position for every input (indexed by RPF index)
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*/
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struct vsp1_drm {
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struct vsp1_drm_pipeline pipe[VSP1_MAX_LIF];
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struct mutex lock;
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struct {
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struct v4l2_rect crop;
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struct v4l2_rect compose;
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unsigned int zpos;
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} inputs[VSP1_MAX_RPF];
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};
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static inline struct vsp1_drm_pipeline *
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to_vsp1_drm_pipeline(struct vsp1_pipeline *pipe)
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{
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return container_of(pipe, struct vsp1_drm_pipeline, pipe);
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}
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int vsp1_drm_init(struct vsp1_device *vsp1);
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void vsp1_drm_cleanup(struct vsp1_device *vsp1);
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#endif /* __VSP1_DRM_H__ */
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