linux/drivers/media/platform/vsp1/vsp1_rwpf.h
Laurent Pinchart 9ec5742b69 media: vsp1: wpf: Add writeback support
Add support for the writeback feature of the WPF, to enable capturing
frames at the WPF output for display pipelines. To enable writeback the
vsp1_rwpf structure mem field must be set to the address of the
writeback buffer and the writeback field set to true before the WPF
.configure_stream() and .configure_partition() are called. The WPF will
enable writeback in the display list for a single frame, and writeback
will then be automatically disabled.

Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Reviewed-by: Kieran Bingham <kieran.bingham+renesas@ideasonboard.com>
Reviewed-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
2019-03-18 17:24:01 +02:00

90 lines
1.9 KiB
C

/* SPDX-License-Identifier: GPL-2.0+ */
/*
* vsp1_rwpf.h -- R-Car VSP1 Read and Write Pixel Formatters
*
* Copyright (C) 2013-2014 Renesas Electronics Corporation
*
* Contact: Laurent Pinchart (laurent.pinchart@ideasonboard.com)
*/
#ifndef __VSP1_RWPF_H__
#define __VSP1_RWPF_H__
#include <linux/spinlock.h>
#include <media/media-entity.h>
#include <media/v4l2-ctrls.h>
#include <media/v4l2-subdev.h>
#include "vsp1.h"
#include "vsp1_entity.h"
#define RWPF_PAD_SINK 0
#define RWPF_PAD_SOURCE 1
struct v4l2_ctrl;
struct vsp1_dl_manager;
struct vsp1_rwpf;
struct vsp1_video;
struct vsp1_rwpf_memory {
dma_addr_t addr[3];
};
struct vsp1_rwpf {
struct vsp1_entity entity;
struct v4l2_ctrl_handler ctrls;
struct vsp1_video *video;
unsigned int max_width;
unsigned int max_height;
struct v4l2_pix_format_mplane format;
const struct vsp1_format_info *fmtinfo;
unsigned int brx_input;
unsigned int alpha;
u32 mult_alpha;
u32 outfmt;
struct {
spinlock_t lock;
struct {
struct v4l2_ctrl *vflip;
struct v4l2_ctrl *hflip;
struct v4l2_ctrl *rotate;
} ctrls;
unsigned int pending;
unsigned int active;
bool rotate;
} flip;
struct vsp1_rwpf_memory mem;
bool writeback;
struct vsp1_dl_manager *dlm;
};
static inline struct vsp1_rwpf *to_rwpf(struct v4l2_subdev *subdev)
{
return container_of(subdev, struct vsp1_rwpf, entity.subdev);
}
static inline struct vsp1_rwpf *entity_to_rwpf(struct vsp1_entity *entity)
{
return container_of(entity, struct vsp1_rwpf, entity);
}
struct vsp1_rwpf *vsp1_rpf_create(struct vsp1_device *vsp1, unsigned int index);
struct vsp1_rwpf *vsp1_wpf_create(struct vsp1_device *vsp1, unsigned int index);
int vsp1_rwpf_init_ctrls(struct vsp1_rwpf *rwpf, unsigned int ncontrols);
extern const struct v4l2_subdev_pad_ops vsp1_rwpf_pad_ops;
struct v4l2_rect *vsp1_rwpf_get_crop(struct vsp1_rwpf *rwpf,
struct v4l2_subdev_pad_config *config);
#endif /* __VSP1_RWPF_H__ */