diff options
Diffstat (limited to 'drivers/staging/media/hantro/hantro_v4l2.c')
-rw-r--r-- | drivers/staging/media/hantro/hantro_v4l2.c | 686 |
1 files changed, 686 insertions, 0 deletions
diff --git a/drivers/staging/media/hantro/hantro_v4l2.c b/drivers/staging/media/hantro/hantro_v4l2.c new file mode 100644 index 000000000000..68f45ee66821 --- /dev/null +++ b/drivers/staging/media/hantro/hantro_v4l2.c @@ -0,0 +1,686 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Hantro VPU codec driver + * + * Copyright (C) 2018 Collabora, Ltd. + * Copyright (C) 2018 Rockchip Electronics Co., Ltd. + * Alpha Lin <Alpha.Lin@rock-chips.com> + * Jeffy Chen <jeffy.chen@rock-chips.com> + * + * Copyright 2018 Google LLC. + * Tomasz Figa <tfiga@chromium.org> + * + * Based on s5p-mfc driver by Samsung Electronics Co., Ltd. + * Copyright (C) 2010-2011 Samsung Electronics Co., Ltd. + */ + +#include <linux/interrupt.h> +#include <linux/io.h> +#include <linux/module.h> +#include <linux/pm_runtime.h> +#include <linux/videodev2.h> +#include <linux/workqueue.h> +#include <media/v4l2-ctrls.h> +#include <media/v4l2-event.h> +#include <media/v4l2-mem2mem.h> +#include <media/videobuf2-core.h> +#include <media/videobuf2-dma-sg.h> + +#include "hantro.h" +#include "hantro_hw.h" +#include "hantro_v4l2.h" + +static const struct hantro_fmt * +hantro_get_formats(const struct hantro_ctx *ctx, unsigned int *num_fmts) +{ + const struct hantro_fmt *formats; + + if (hantro_is_encoder_ctx(ctx)) { + formats = ctx->dev->variant->enc_fmts; + *num_fmts = ctx->dev->variant->num_enc_fmts; + } else { + formats = ctx->dev->variant->dec_fmts; + *num_fmts = ctx->dev->variant->num_dec_fmts; + } + + return formats; +} + +static const struct hantro_fmt * +hantro_find_format(const struct hantro_fmt *formats, unsigned int num_fmts, + u32 fourcc) +{ + unsigned int i; + + for (i = 0; i < num_fmts; i++) + if (formats[i].fourcc == fourcc) + return &formats[i]; + return NULL; +} + +static const struct hantro_fmt * +hantro_get_default_fmt(const struct hantro_fmt *formats, unsigned int num_fmts, + bool bitstream) +{ + unsigned int i; + + for (i = 0; i < num_fmts; i++) { + if (bitstream == (formats[i].codec_mode != + HANTRO_MODE_NONE)) + return &formats[i]; + } + return NULL; +} + +static int vidioc_querycap(struct file *file, void *priv, + struct v4l2_capability *cap) +{ + struct hantro_dev *vpu = video_drvdata(file); + struct video_device *vdev = video_devdata(file); + + strscpy(cap->driver, vpu->dev->driver->name, sizeof(cap->driver)); + strscpy(cap->card, vdev->name, sizeof(cap->card)); + snprintf(cap->bus_info, sizeof(cap->bus_info), "platform: %s", + vpu->dev->driver->name); + return 0; +} + +static int vidioc_enum_framesizes(struct file *file, void *priv, + struct v4l2_frmsizeenum *fsize) +{ + struct hantro_ctx *ctx = fh_to_ctx(priv); + const struct hantro_fmt *formats, *fmt; + unsigned int num_fmts; + + if (fsize->index != 0) { + vpu_debug(0, "invalid frame size index (expected 0, got %d)\n", + fsize->index); + return -EINVAL; + } + + formats = hantro_get_formats(ctx, &num_fmts); + fmt = hantro_find_format(formats, num_fmts, fsize->pixel_format); + if (!fmt) { + vpu_debug(0, "unsupported bitstream format (%08x)\n", + fsize->pixel_format); + return -EINVAL; + } + + /* This only makes sense for coded formats */ + if (fmt->codec_mode == HANTRO_MODE_NONE) + return -EINVAL; + + fsize->type = V4L2_FRMSIZE_TYPE_STEPWISE; + fsize->stepwise = fmt->frmsize; + + return 0; +} + +static int vidioc_enum_fmt(struct file *file, void *priv, + struct v4l2_fmtdesc *f, bool capture) + +{ + struct hantro_ctx *ctx = fh_to_ctx(priv); + const struct hantro_fmt *fmt, *formats; + unsigned int num_fmts, i, j = 0; + bool skip_mode_none; + + /* + * When dealing with an encoder: + * - on the capture side we want to filter out all MODE_NONE formats. + * - on the output side we want to filter out all formats that are + * not MODE_NONE. + * When dealing with a decoder: + * - on the capture side we want to filter out all formats that are + * not MODE_NONE. + * - on the output side we want to filter out all MODE_NONE formats. + */ + skip_mode_none = capture == hantro_is_encoder_ctx(ctx); + + formats = hantro_get_formats(ctx, &num_fmts); + for (i = 0; i < num_fmts; i++) { + bool mode_none = formats[i].codec_mode == HANTRO_MODE_NONE; + + if (skip_mode_none == mode_none) + continue; + if (j == f->index) { + fmt = &formats[i]; + f->pixelformat = fmt->fourcc; + return 0; + } + ++j; + } + return -EINVAL; +} + +static int vidioc_enum_fmt_vid_cap(struct file *file, void *priv, + struct v4l2_fmtdesc *f) +{ + return vidioc_enum_fmt(file, priv, f, true); +} + +static int vidioc_enum_fmt_vid_out(struct file *file, void *priv, + struct v4l2_fmtdesc *f) +{ + return vidioc_enum_fmt(file, priv, f, false); +} + +static int vidioc_g_fmt_out_mplane(struct file *file, void *priv, + struct v4l2_format *f) +{ + struct v4l2_pix_format_mplane *pix_mp = &f->fmt.pix_mp; + struct hantro_ctx *ctx = fh_to_ctx(priv); + + vpu_debug(4, "f->type = %d\n", f->type); + + *pix_mp = ctx->src_fmt; + + return 0; +} + +static int vidioc_g_fmt_cap_mplane(struct file *file, void *priv, + struct v4l2_format *f) +{ + struct v4l2_pix_format_mplane *pix_mp = &f->fmt.pix_mp; + struct hantro_ctx *ctx = fh_to_ctx(priv); + + vpu_debug(4, "f->type = %d\n", f->type); + + *pix_mp = ctx->dst_fmt; + + return 0; +} + +static int vidioc_try_fmt(struct file *file, void *priv, struct v4l2_format *f, + bool capture) +{ + struct hantro_ctx *ctx = fh_to_ctx(priv); + struct v4l2_pix_format_mplane *pix_mp = &f->fmt.pix_mp; + const struct hantro_fmt *formats, *fmt, *vpu_fmt; + unsigned int num_fmts; + bool coded; + + coded = capture == hantro_is_encoder_ctx(ctx); + + vpu_debug(4, "trying format %c%c%c%c\n", + (pix_mp->pixelformat & 0x7f), + (pix_mp->pixelformat >> 8) & 0x7f, + (pix_mp->pixelformat >> 16) & 0x7f, + (pix_mp->pixelformat >> 24) & 0x7f); + + formats = hantro_get_formats(ctx, &num_fmts); + fmt = hantro_find_format(formats, num_fmts, pix_mp->pixelformat); + if (!fmt) { + fmt = hantro_get_default_fmt(formats, num_fmts, coded); + f->fmt.pix_mp.pixelformat = fmt->fourcc; + } + + if (coded) { + pix_mp->num_planes = 1; + vpu_fmt = fmt; + } else if (hantro_is_encoder_ctx(ctx)) { + vpu_fmt = ctx->vpu_dst_fmt; + } else { + vpu_fmt = ctx->vpu_src_fmt; + /* + * Width/height on the CAPTURE end of a decoder are ignored and + * replaced by the OUTPUT ones. + */ + pix_mp->width = ctx->src_fmt.width; + pix_mp->height = ctx->src_fmt.height; + } + + pix_mp->field = V4L2_FIELD_NONE; + + v4l2_apply_frmsize_constraints(&pix_mp->width, &pix_mp->height, + &vpu_fmt->frmsize); + + if (!coded) { + /* Fill remaining fields */ + v4l2_fill_pixfmt_mp(pix_mp, fmt->fourcc, pix_mp->width, + pix_mp->height); + } else if (!pix_mp->plane_fmt[0].sizeimage) { + /* + * For coded formats the application can specify + * sizeimage. If the application passes a zero sizeimage, + * let's default to the maximum frame size. + */ + pix_mp->plane_fmt[0].sizeimage = fmt->header_size + + pix_mp->width * pix_mp->height * fmt->max_depth; + } + + return 0; +} + +static int vidioc_try_fmt_cap_mplane(struct file *file, void *priv, + struct v4l2_format *f) +{ + return vidioc_try_fmt(file, priv, f, true); +} + +static int vidioc_try_fmt_out_mplane(struct file *file, void *priv, + struct v4l2_format *f) +{ + return vidioc_try_fmt(file, priv, f, false); +} + +static void +hantro_reset_fmt(struct v4l2_pix_format_mplane *fmt, + const struct hantro_fmt *vpu_fmt) +{ + memset(fmt, 0, sizeof(*fmt)); + + fmt->pixelformat = vpu_fmt->fourcc; + fmt->field = V4L2_FIELD_NONE; + fmt->colorspace = V4L2_COLORSPACE_JPEG, + fmt->ycbcr_enc = V4L2_YCBCR_ENC_DEFAULT; + fmt->quantization = V4L2_QUANTIZATION_DEFAULT; + fmt->xfer_func = V4L2_XFER_FUNC_DEFAULT; +} + +static void +hantro_reset_encoded_fmt(struct hantro_ctx *ctx) +{ + const struct hantro_fmt *vpu_fmt, *formats; + struct v4l2_pix_format_mplane *fmt; + unsigned int num_fmts; + + formats = hantro_get_formats(ctx, &num_fmts); + vpu_fmt = hantro_get_default_fmt(formats, num_fmts, true); + + if (hantro_is_encoder_ctx(ctx)) { + ctx->vpu_dst_fmt = vpu_fmt; + fmt = &ctx->dst_fmt; + } else { + ctx->vpu_src_fmt = vpu_fmt; + fmt = &ctx->src_fmt; + } + + hantro_reset_fmt(fmt, vpu_fmt); + fmt->num_planes = 1; + fmt->width = vpu_fmt->frmsize.min_width; + fmt->height = vpu_fmt->frmsize.min_height; + fmt->plane_fmt[0].sizeimage = vpu_fmt->header_size + + fmt->width * fmt->height * vpu_fmt->max_depth; +} + +static void +hantro_reset_raw_fmt(struct hantro_ctx *ctx) +{ + const struct hantro_fmt *raw_vpu_fmt, *formats; + struct v4l2_pix_format_mplane *raw_fmt, *encoded_fmt; + unsigned int num_fmts; + + formats = hantro_get_formats(ctx, &num_fmts); + raw_vpu_fmt = hantro_get_default_fmt(formats, num_fmts, false); + + if (hantro_is_encoder_ctx(ctx)) { + ctx->vpu_src_fmt = raw_vpu_fmt; + raw_fmt = &ctx->src_fmt; + encoded_fmt = &ctx->dst_fmt; + } else { + ctx->vpu_dst_fmt = raw_vpu_fmt; + raw_fmt = &ctx->dst_fmt; + encoded_fmt = &ctx->src_fmt; + } + + hantro_reset_fmt(raw_fmt, raw_vpu_fmt); + v4l2_fill_pixfmt_mp(raw_fmt, raw_vpu_fmt->fourcc, + encoded_fmt->width, + encoded_fmt->height); +} + +void hantro_reset_fmts(struct hantro_ctx *ctx) +{ + hantro_reset_encoded_fmt(ctx); + hantro_reset_raw_fmt(ctx); +} + +static void +hantro_update_requires_request(struct hantro_ctx *ctx, u32 fourcc) +{ + switch (fourcc) { + case V4L2_PIX_FMT_JPEG: + ctx->fh.m2m_ctx->out_q_ctx.q.requires_requests = false; + break; + case V4L2_PIX_FMT_MPEG2_SLICE: + ctx->fh.m2m_ctx->out_q_ctx.q.requires_requests = true; + break; + default: + break; + } +} + +static int +vidioc_s_fmt_out_mplane(struct file *file, void *priv, struct v4l2_format *f) +{ + struct v4l2_pix_format_mplane *pix_mp = &f->fmt.pix_mp; + struct hantro_ctx *ctx = fh_to_ctx(priv); + const struct hantro_fmt *formats; + unsigned int num_fmts; + struct vb2_queue *vq; + int ret; + + /* Change not allowed if queue is busy. */ + vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, f->type); + if (vb2_is_busy(vq)) + return -EBUSY; + + if (!hantro_is_encoder_ctx(ctx)) { + struct vb2_queue *peer_vq; + + /* + * Since format change on the OUTPUT queue will reset + * the CAPTURE queue, we can't allow doing so + * when the CAPTURE queue has buffers allocated. + */ + peer_vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, + V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE); + if (vb2_is_busy(peer_vq)) + return -EBUSY; + } + + ret = vidioc_try_fmt_out_mplane(file, priv, f); + if (ret) + return ret; + + formats = hantro_get_formats(ctx, &num_fmts); + ctx->vpu_src_fmt = hantro_find_format(formats, num_fmts, + pix_mp->pixelformat); + ctx->src_fmt = *pix_mp; + + /* + * Current raw format might have become invalid with newly + * selected codec, so reset it to default just to be safe and + * keep internal driver state sane. User is mandated to set + * the raw format again after we return, so we don't need + * anything smarter. + * Note that hantro_reset_raw_fmt() also propagates size + * changes to the raw format. + */ + if (!hantro_is_encoder_ctx(ctx)) + hantro_reset_raw_fmt(ctx); + + /* Colorimetry information are always propagated. */ + ctx->dst_fmt.colorspace = pix_mp->colorspace; + ctx->dst_fmt.ycbcr_enc = pix_mp->ycbcr_enc; + ctx->dst_fmt.xfer_func = pix_mp->xfer_func; + ctx->dst_fmt.quantization = pix_mp->quantization; + + hantro_update_requires_request(ctx, pix_mp->pixelformat); + + vpu_debug(0, "OUTPUT codec mode: %d\n", ctx->vpu_src_fmt->codec_mode); + vpu_debug(0, "fmt - w: %d, h: %d\n", + pix_mp->width, pix_mp->height); + return 0; +} + +static int vidioc_s_fmt_cap_mplane(struct file *file, void *priv, + struct v4l2_format *f) +{ + struct v4l2_pix_format_mplane *pix_mp = &f->fmt.pix_mp; + struct hantro_ctx *ctx = fh_to_ctx(priv); + const struct hantro_fmt *formats; + struct vb2_queue *vq; + unsigned int num_fmts; + int ret; + + /* Change not allowed if queue is busy. */ + vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, f->type); + if (vb2_is_busy(vq)) + return -EBUSY; + + if (hantro_is_encoder_ctx(ctx)) { + struct vb2_queue *peer_vq; + + /* + * Since format change on the CAPTURE queue will reset + * the OUTPUT queue, we can't allow doing so + * when the OUTPUT queue has buffers allocated. + */ + peer_vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, + V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE); + if (vb2_is_busy(peer_vq) && + (pix_mp->pixelformat != ctx->dst_fmt.pixelformat || + pix_mp->height != ctx->dst_fmt.height || + pix_mp->width != ctx->dst_fmt.width)) + return -EBUSY; + } + + ret = vidioc_try_fmt_cap_mplane(file, priv, f); + if (ret) + return ret; + + formats = hantro_get_formats(ctx, &num_fmts); + ctx->vpu_dst_fmt = hantro_find_format(formats, num_fmts, + pix_mp->pixelformat); + ctx->dst_fmt = *pix_mp; + + /* + * Current raw format might have become invalid with newly + * selected codec, so reset it to default just to be safe and + * keep internal driver state sane. User is mandated to set + * the raw format again after we return, so we don't need + * anything smarter. + * Note that hantro_reset_raw_fmt() also propagates size + * changes to the raw format. + */ + if (hantro_is_encoder_ctx(ctx)) + hantro_reset_raw_fmt(ctx); + + /* Colorimetry information are always propagated. */ + ctx->src_fmt.colorspace = pix_mp->colorspace; + ctx->src_fmt.ycbcr_enc = pix_mp->ycbcr_enc; + ctx->src_fmt.xfer_func = pix_mp->xfer_func; + ctx->src_fmt.quantization = pix_mp->quantization; + + vpu_debug(0, "CAPTURE codec mode: %d\n", ctx->vpu_dst_fmt->codec_mode); + vpu_debug(0, "fmt - w: %d, h: %d\n", + pix_mp->width, pix_mp->height); + + hantro_update_requires_request(ctx, pix_mp->pixelformat); + + return 0; +} + +const struct v4l2_ioctl_ops hantro_ioctl_ops = { + .vidioc_querycap = vidioc_querycap, + .vidioc_enum_framesizes = vidioc_enum_framesizes, + + .vidioc_try_fmt_vid_cap_mplane = vidioc_try_fmt_cap_mplane, + .vidioc_try_fmt_vid_out_mplane = vidioc_try_fmt_out_mplane, + .vidioc_s_fmt_vid_out_mplane = vidioc_s_fmt_out_mplane, + .vidioc_s_fmt_vid_cap_mplane = vidioc_s_fmt_cap_mplane, + .vidioc_g_fmt_vid_out_mplane = vidioc_g_fmt_out_mplane, + .vidioc_g_fmt_vid_cap_mplane = vidioc_g_fmt_cap_mplane, + .vidioc_enum_fmt_vid_out = vidioc_enum_fmt_vid_out, + .vidioc_enum_fmt_vid_cap = vidioc_enum_fmt_vid_cap, + + .vidioc_reqbufs = v4l2_m2m_ioctl_reqbufs, + .vidioc_querybuf = v4l2_m2m_ioctl_querybuf, + .vidioc_qbuf = v4l2_m2m_ioctl_qbuf, + .vidioc_dqbuf = v4l2_m2m_ioctl_dqbuf, + .vidioc_prepare_buf = v4l2_m2m_ioctl_prepare_buf, + .vidioc_create_bufs = v4l2_m2m_ioctl_create_bufs, + .vidioc_expbuf = v4l2_m2m_ioctl_expbuf, + + .vidioc_subscribe_event = v4l2_ctrl_subscribe_event, + .vidioc_unsubscribe_event = v4l2_event_unsubscribe, + + .vidioc_streamon = v4l2_m2m_ioctl_streamon, + .vidioc_streamoff = v4l2_m2m_ioctl_streamoff, +}; + +static int +hantro_queue_setup(struct vb2_queue *vq, unsigned int *num_buffers, + unsigned int *num_planes, unsigned int sizes[], + struct device *alloc_devs[]) +{ + struct hantro_ctx *ctx = vb2_get_drv_priv(vq); + struct v4l2_pix_format_mplane *pixfmt; + int i; + + switch (vq->type) { + case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE: + pixfmt = &ctx->dst_fmt; + break; + case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE: + pixfmt = &ctx->src_fmt; + break; + default: + vpu_err("invalid queue type: %d\n", vq->type); + return -EINVAL; + } + + if (*num_planes) { + if (*num_planes != pixfmt->num_planes) + return -EINVAL; + for (i = 0; i < pixfmt->num_planes; ++i) + if (sizes[i] < pixfmt->plane_fmt[i].sizeimage) + return -EINVAL; + return 0; + } + + *num_planes = pixfmt->num_planes; + for (i = 0; i < pixfmt->num_planes; ++i) + sizes[i] = pixfmt->plane_fmt[i].sizeimage; + return 0; +} + +static int +hantro_buf_plane_check(struct vb2_buffer *vb, const struct hantro_fmt *vpu_fmt, + struct v4l2_pix_format_mplane *pixfmt) +{ + unsigned int sz; + int i; + + for (i = 0; i < pixfmt->num_planes; ++i) { + sz = pixfmt->plane_fmt[i].sizeimage; + vpu_debug(4, "plane %d size: %ld, sizeimage: %u\n", + i, vb2_plane_size(vb, i), sz); + if (vb2_plane_size(vb, i) < sz) { + vpu_err("plane %d is too small for output\n", i); + return -EINVAL; + } + } + return 0; +} + +static int hantro_buf_prepare(struct vb2_buffer *vb) +{ + struct vb2_queue *vq = vb->vb2_queue; + struct hantro_ctx *ctx = vb2_get_drv_priv(vq); + + if (V4L2_TYPE_IS_OUTPUT(vq->type)) + return hantro_buf_plane_check(vb, ctx->vpu_src_fmt, + &ctx->src_fmt); + + return hantro_buf_plane_check(vb, ctx->vpu_dst_fmt, &ctx->dst_fmt); +} + +static void hantro_buf_queue(struct vb2_buffer *vb) +{ + struct hantro_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue); + struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb); + + v4l2_m2m_buf_queue(ctx->fh.m2m_ctx, vbuf); +} + +static bool hantro_vq_is_coded(struct vb2_queue *q) +{ + struct hantro_ctx *ctx = vb2_get_drv_priv(q); + + return hantro_is_encoder_ctx(ctx) != V4L2_TYPE_IS_OUTPUT(q->type); +} + +static int hantro_start_streaming(struct vb2_queue *q, unsigned int count) +{ + struct hantro_ctx *ctx = vb2_get_drv_priv(q); + int ret = 0; + + if (V4L2_TYPE_IS_OUTPUT(q->type)) + ctx->sequence_out = 0; + else + ctx->sequence_cap = 0; + + if (hantro_vq_is_coded(q)) { + enum hantro_codec_mode codec_mode; + + if (V4L2_TYPE_IS_OUTPUT(q->type)) + codec_mode = ctx->vpu_src_fmt->codec_mode; + else + codec_mode = ctx->vpu_dst_fmt->codec_mode; + + vpu_debug(4, "Codec mode = %d\n", codec_mode); + ctx->codec_ops = &ctx->dev->variant->codec_ops[codec_mode]; + if (ctx->codec_ops->init) + ret = ctx->codec_ops->init(ctx); + } + + return ret; +} + +static void +hantro_return_bufs(struct vb2_queue *q, + struct vb2_v4l2_buffer *(*buf_remove)(struct v4l2_m2m_ctx *)) +{ + struct hantro_ctx *ctx = vb2_get_drv_priv(q); + + for (;;) { + struct vb2_v4l2_buffer *vbuf; + + vbuf = buf_remove(ctx->fh.m2m_ctx); + if (!vbuf) + break; + v4l2_ctrl_request_complete(vbuf->vb2_buf.req_obj.req, + &ctx->ctrl_handler); + v4l2_m2m_buf_done(vbuf, VB2_BUF_STATE_ERROR); + } +} + +static void hantro_stop_streaming(struct vb2_queue *q) +{ + struct hantro_ctx *ctx = vb2_get_drv_priv(q); + + if (hantro_vq_is_coded(q)) { + if (ctx->codec_ops && ctx->codec_ops->exit) + ctx->codec_ops->exit(ctx); + } + + /* + * The mem2mem framework calls v4l2_m2m_cancel_job before + * .stop_streaming, so there isn't any job running and + * it is safe to return all the buffers. + */ + if (V4L2_TYPE_IS_OUTPUT(q->type)) + hantro_return_bufs(q, v4l2_m2m_src_buf_remove); + else + hantro_return_bufs(q, v4l2_m2m_dst_buf_remove); +} + +static void hantro_buf_request_complete(struct vb2_buffer *vb) +{ + struct hantro_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue); + + v4l2_ctrl_request_complete(vb->req_obj.req, &ctx->ctrl_handler); +} + +static int hantro_buf_out_validate(struct vb2_buffer *vb) +{ + struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb); + + vbuf->field = V4L2_FIELD_NONE; + return 0; +} + +const struct vb2_ops hantro_queue_ops = { + .queue_setup = hantro_queue_setup, + .buf_prepare = hantro_buf_prepare, + .buf_queue = hantro_buf_queue, + .buf_out_validate = hantro_buf_out_validate, + .buf_request_complete = hantro_buf_request_complete, + .start_streaming = hantro_start_streaming, + .stop_streaming = hantro_stop_streaming, + .wait_prepare = vb2_ops_wait_prepare, + .wait_finish = vb2_ops_wait_finish, +}; 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