// SPDX-License-Identifier: GPL-2.0+
/*
* vsp1_video.c -- R-Car VSP1 Video Node
*
* Copyright (C) 2013-2015 Renesas Electronics Corporation
*
* Contact: Laurent Pinchart (laurent.pinchart@ideasonboard.com)
*/
#include <linux/list.h>
#include <linux/module.h>
#include <linux/mutex.h>
#include <linux/slab.h>
#include <linux/v4l2-mediabus.h>
#include <linux/videodev2.h>
#include <linux/wait.h>
#include <media/media-entity.h>
#include <media/v4l2-dev.h>
#include <media/v4l2-fh.h>
#include <media/v4l2-ioctl.h>
#include <media/v4l2-subdev.h>
#include <media/videobuf2-v4l2.h>
#include <media/videobuf2-dma-contig.h>
#include "vsp1.h"
#include "vsp1_brx.h"
#include "vsp1_dl.h"
#include "vsp1_entity.h"
#include "vsp1_hgo.h"
#include "vsp1_hgt.h"
#include "vsp1_pipe.h"
#include "vsp1_rwpf.h"
#include "vsp1_uds.h"
#include "vsp1_video.h"
#define VSP1_VIDEO_DEF_FORMAT V4L2_PIX_FMT_YUYV
#define VSP1_VIDEO_DEF_WIDTH 1024
#define VSP1_VIDEO_DEF_HEIGHT 768
#define VSP1_VIDEO_MAX_WIDTH 8190U
#define VSP1_VIDEO_MAX_HEIGHT 8190U
/* -----------------------------------------------------------------------------
* Helper functions
*/
static struct v4l2_subdev *
vsp1_video_remote_subdev(struct media_pad *local, u32 *pad)
{
struct media_pad *remote;
remote = media_entity_remote_pad(local);
if (!remote || !is_media_entity_v4l2_subdev(remote->entity))
return NULL;
if (pad)
*pad = remote->index;
return media_entity_to_v4l2_subdev(remote->entity);
}
static int vsp1_video_verify_format(struct vsp1_video *video)
{
struct v4l2_subdev_format fmt;
struct v4l2_subdev *subdev;
int ret;
subdev = vsp1_video_remote_subdev(&video->pad, &fmt.pad);
if (subdev == NULL)
return -EINVAL;
fmt.which = V4L2_SUBDEV_FORMAT_ACTIVE;
ret = v4l2_subdev_call(subdev, pad, get_fmt, NULL, &fmt);
if (ret < 0)
return ret == -ENOIOCTLCMD ? -EINVAL : ret;
if (video->rwpf->fmtinfo->mbus != fmt.format.code ||
video->rwpf->format.height != fmt.format.height ||
video->rwpf->format.width != fmt.format.width)
return -EINVAL;
return 0;
}
static int __vsp1_video_try_format(struct vsp1_video *video,
struct v4l2_pix_format_mplane *pix,
const struct vsp1_format_info **fmtinfo)
{
static const u32 xrgb_formats[][2