root/drivers/media/platform/mediatek/vcodec/encoder/mtk_vcodec_enc.c
// SPDX-License-Identifier: GPL-2.0
/*
* Copyright (c) 2016 MediaTek Inc.
* Author: PC Chen <pc.chen@mediatek.com>
*         Tiffany Lin <tiffany.lin@mediatek.com>
*/

#include <media/v4l2-event.h>
#include <media/v4l2-mem2mem.h>
#include <media/videobuf2-dma-contig.h>
#include <linux/pm_runtime.h>

#include "mtk_vcodec_enc.h"
#include "venc_drv_if.h"

#define MTK_VENC_MIN_W  160U
#define MTK_VENC_MIN_H  128U
#define MTK_VENC_HD_MAX_W       1920U
#define MTK_VENC_HD_MAX_H       1088U
#define MTK_VENC_4K_MAX_W       3840U
#define MTK_VENC_4K_MAX_H       2176U

#define DFT_CFG_WIDTH   MTK_VENC_MIN_W
#define DFT_CFG_HEIGHT  MTK_VENC_MIN_H
#define MTK_MAX_CTRLS_HINT      20

#define MTK_DEFAULT_FRAMERATE_NUM 1001
#define MTK_DEFAULT_FRAMERATE_DENOM 30000
#define MTK_VENC_4K_CAPABILITY_ENABLE BIT(0)

static void mtk_venc_worker(struct work_struct *work);

static const struct v4l2_frmsize_stepwise mtk_venc_hd_framesizes = {
        MTK_VENC_MIN_W, MTK_VENC_HD_MAX_W, 16,
        MTK_VENC_MIN_H, MTK_VENC_HD_MAX_H, 16,
};

static const struct v4l2_frmsize_stepwise mtk_venc_4k_framesizes = {
        MTK_VENC_MIN_W, MTK_VENC_4K_MAX_W, 16,
        MTK_VENC_MIN_H, MTK_VENC_4K_MAX_H, 16,
};

static int vidioc_venc_s_ctrl(struct v4l2_ctrl *ctrl)
{
        struct mtk_vcodec_enc_ctx *ctx = ctrl_to_enc_ctx(ctrl);
        struct mtk_enc_params *p = &ctx->enc_params;
        int ret = 0;

        switch (ctrl->id) {
        case V4L2_CID_MPEG_VIDEO_BITRATE_MODE:
                mtk_v4l2_venc_dbg(2, ctx, "V4L2_CID_MPEG_VIDEO_BITRATE_MODE val= %d", ctrl->val);
                if (ctrl->val != V4L2_MPEG_VIDEO_BITRATE_MODE_CBR) {
                        mtk_v4l2_venc_err(ctx, "Unsupported bitrate mode =%d", ctrl->val);
                        ret = -EINVAL;
                }
                break;
        case V4L2_CID_MPEG_VIDEO_BITRATE:
                mtk_v4l2_venc_dbg(2, ctx, "V4L2_CID_MPEG_VIDEO_BITRATE val = %d", ctrl->val);
                p->bitrate = ctrl->val;
                ctx->param_change |= MTK_ENCODE_PARAM_BITRATE;
                break;
        case V4L2_CID_MPEG_VIDEO_B_FRAMES:
                mtk_v4l2_venc_dbg(2, ctx, "V4L2_CID_MPEG_VIDEO_B_FRAMES val = %d", ctrl->val);
                p->num_b_frame = ctrl->val;
                break;
        case V4L2_CID_MPEG_VIDEO_FRAME_RC_ENABLE:
                mtk_v4l2_venc_dbg(2, ctx, "V4L2_CID_MPEG_VIDEO_FRAME_RC_ENABLE val = %d",
                                  ctrl->val);
                p->rc_frame = ctrl->val;
                break;
        case V4L2_CID_MPEG_VIDEO_H264_MAX_QP:
                mtk_v4l2_venc_dbg(2, ctx, "V4L2_CID_MPEG_VIDEO_H264_MAX_QP val = %d", ctrl->val);
                p->h264_max_qp = ctrl->val;
                break;
        case V4L2_CID_MPEG_VIDEO_HEADER_MODE:
                mtk_v4l2_venc_dbg(2, ctx, "V4L2_CID_MPEG_VIDEO_HEADER_MODE val = %d", ctrl->val);
                p->seq_hdr_mode = ctrl->val;
                break;
        case V4L2_CID_MPEG_VIDEO_MB_RC_ENABLE:
                mtk_v4l2_venc_dbg(2, ctx, "V4L2_CID_MPEG_VIDEO_MB_RC_ENABLE val = %d", ctrl->val);
                p->rc_mb = ctrl->val;
                break;
        case V4L2_CID_MPEG_VIDEO_H264_PROFILE:
                mtk_v4l2_venc_dbg(2, ctx, "V4L2_CID_MPEG_VIDEO_H264_PROFILE val = %d", ctrl->val);
                p->h264_profile = ctrl->val;
                break;
        case V4L2_CID_MPEG_VIDEO_H264_LEVEL:
                mtk_v4l2_venc_dbg(2, ctx, "V4L2_CID_MPEG_VIDEO_H264_LEVEL val = %d", ctrl->val);
                p->h264_level = ctrl->val;
                break;
        case V4L2_CID_MPEG_VIDEO_H264_I_PERIOD:
                mtk_v4l2_venc_dbg(2, ctx, "V4L2_CID_MPEG_VIDEO_H264_I_PERIOD val = %d", ctrl->val);
                p->intra_period = ctrl->val;
                ctx->param_change |= MTK_ENCODE_PARAM_INTRA_PERIOD;
                break;
        case V4L2_CID_MPEG_VIDEO_GOP_SIZE:
                mtk_v4l2_venc_dbg(2, ctx, "V4L2_CID_MPEG_VIDEO_GOP_SIZE val = %d", ctrl->val);
                p->gop_size = ctrl->val;
                ctx->param_change |= MTK_ENCODE_PARAM_GOP_SIZE;
                break;
        case V4L2_CID_MPEG_VIDEO_VP8_PROFILE:
                /*
                 * FIXME - what vp8 profiles are actually supported?
                 * The ctrl is added (with only profile 0 supported) for now.
                 */
                mtk_v4l2_venc_dbg(2, ctx, "V4L2_CID_MPEG_VIDEO_VP8_PROFILE val = %d", ctrl->val);
                break;
        case V4L2_CID_MPEG_VIDEO_FORCE_KEY_FRAME:
                mtk_v4l2_venc_dbg(2, ctx, "V4L2_CID_MPEG_VIDEO_FORCE_KEY_FRAME");
                p->force_intra = 1;
                ctx->param_change |= MTK_ENCODE_PARAM_FORCE_INTRA;
                break;
        default:
                ret = -EINVAL;
                break;
        }

        return ret;
}

static const struct v4l2_ctrl_ops mtk_vcodec_enc_ctrl_ops = {
        .s_ctrl = vidioc_venc_s_ctrl,
};

static int vidioc_enum_fmt(struct v4l2_fmtdesc *f,
                           const struct mtk_video_fmt *formats,
                           size_t num_formats)
{
        if (f->index >= num_formats)
                return -EINVAL;

        f->pixelformat = formats[f->index].fourcc;

        return 0;
}

static const struct mtk_video_fmt *
mtk_venc_find_format(u32 fourcc, const struct mtk_vcodec_enc_pdata *pdata)
{
        const struct mtk_video_fmt *fmt;
        unsigned int k;

        for (k = 0; k < pdata->num_capture_formats; k++) {
                fmt = &pdata->capture_formats[k];
                if (fmt->fourcc == fourcc)
                        return fmt;
        }

        for (k = 0; k < pdata->num_output_formats; k++) {
                fmt = &pdata->output_formats[k];
                if (fmt->fourcc == fourcc)
                        return fmt;
        }

        return NULL;
}

static int vidioc_enum_framesizes(struct file *file, void *fh,
                                  struct v4l2_frmsizeenum *fsize)
{
        const struct mtk_video_fmt *fmt;
        struct mtk_vcodec_enc_ctx *ctx = file_to_enc_ctx(file);

        if (fsize->index != 0)
                return -EINVAL;

        fmt = mtk_venc_find_format(fsize->pixel_format,
                                   ctx->dev->venc_pdata);
        if (!fmt)
                return -EINVAL;

        fsize->type = V4L2_FRMSIZE_TYPE_STEPWISE;

        if (ctx->dev->enc_capability & MTK_VENC_4K_CAPABILITY_ENABLE)
                fsize->stepwise = mtk_venc_4k_framesizes;
        else
                fsize->stepwise = mtk_venc_hd_framesizes;

        return 0;
}

static int vidioc_enum_fmt_vid_cap(struct file *file, void *priv,
                                   struct v4l2_fmtdesc *f)
{
        const struct mtk_vcodec_enc_pdata *pdata =
                file_to_enc_ctx(file)->dev->venc_pdata;

        return vidioc_enum_fmt(f, pdata->capture_formats,
                               pdata->num_capture_formats);
}

static int vidioc_enum_fmt_vid_out(struct file *file, void *priv,
                                   struct v4l2_fmtdesc *f)
{
        const struct mtk_vcodec_enc_pdata *pdata =
                file_to_enc_ctx(file)->dev->venc_pdata;

        return vidioc_enum_fmt(f, pdata->output_formats,
                               pdata->num_output_formats);
}

static int mtk_vcodec_enc_get_chip_name(struct mtk_vcodec_enc_ctx *ctx)
{
        struct device *dev = &ctx->dev->plat_dev->dev;

        if (of_device_is_compatible(dev->of_node, "mediatek,mt8173-vcodec-enc"))
                return 8173;
        else if (of_device_is_compatible(dev->of_node, "mediatek,mt8183-vcodec-enc"))
                return 8183;
        else if (of_device_is_compatible(dev->of_node, "mediatek,mt8192-vcodec-enc"))
                return 8192;
        else if (of_device_is_compatible(dev->of_node, "mediatek,mt8195-vcodec-enc"))
                return 8195;
        else if (of_device_is_compatible(dev->of_node, "mediatek,mt8188-vcodec-enc"))
                return 8188;
        else
                return 8173;
}

static int vidioc_venc_querycap(struct file *file, void *priv,
                                struct v4l2_capability *cap)
{
        struct mtk_vcodec_enc_ctx *ctx = file_to_enc_ctx(file);
        struct device *dev = &ctx->dev->plat_dev->dev;
        int platform_name = mtk_vcodec_enc_get_chip_name(ctx);

        strscpy(cap->driver, dev->driver->name, sizeof(cap->driver));
        snprintf(cap->card, sizeof(cap->card), "MT%d video encoder", platform_name);

        return 0;
}

static int vidioc_venc_s_parm(struct file *file, void *priv,
                              struct v4l2_streamparm *a)
{
        struct mtk_vcodec_enc_ctx *ctx = file_to_enc_ctx(file);
        struct v4l2_fract *timeperframe = &a->parm.output.timeperframe;

        if (a->type != V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE)
                return -EINVAL;

        if (timeperframe->numerator == 0 || timeperframe->denominator == 0) {
                timeperframe->numerator = MTK_DEFAULT_FRAMERATE_NUM;
                timeperframe->denominator = MTK_DEFAULT_FRAMERATE_DENOM;
        }

        ctx->enc_params.framerate_num = timeperframe->denominator;
        ctx->enc_params.framerate_denom = timeperframe->numerator;
        ctx->param_change |= MTK_ENCODE_PARAM_FRAMERATE;

        a->parm.output.capability = V4L2_CAP_TIMEPERFRAME;

        return 0;
}

static int vidioc_venc_g_parm(struct file *file, void *priv,
                              struct v4l2_streamparm *a)
{
        struct mtk_vcodec_enc_ctx *ctx = file_to_enc_ctx(file);

        if (a->type != V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE)
                return -EINVAL;

        a->parm.output.capability = V4L2_CAP_TIMEPERFRAME;
        a->parm.output.timeperframe.denominator =
                        ctx->enc_params.framerate_num;
        a->parm.output.timeperframe.numerator =
                        ctx->enc_params.framerate_denom;

        return 0;
}

static struct mtk_q_data *mtk_venc_get_q_data(struct mtk_vcodec_enc_ctx *ctx,
                                              enum v4l2_buf_type type)
{
        if (V4L2_TYPE_IS_OUTPUT(type))
                return &ctx->q_data[MTK_Q_DATA_SRC];

        return &ctx->q_data[MTK_Q_DATA_DST];
}

static void vidioc_try_fmt_cap(struct v4l2_format *f)
{
        f->fmt.pix_mp.field = V4L2_FIELD_NONE;
        f->fmt.pix_mp.num_planes = 1;
        f->fmt.pix_mp.plane_fmt[0].bytesperline = 0;
        f->fmt.pix_mp.flags = 0;
}

/* V4L2 specification suggests the driver corrects the format struct if any of
 * the dimensions is unsupported
 */
static int vidioc_try_fmt_out(struct mtk_vcodec_enc_ctx *ctx, struct v4l2_format *f,
                              const struct mtk_video_fmt *fmt)
{
        struct v4l2_pix_format_mplane *pix_fmt_mp = &f->fmt.pix_mp;
        int tmp_w, tmp_h;
        unsigned int max_width, max_height;

        pix_fmt_mp->field = V4L2_FIELD_NONE;

        if (ctx->dev->enc_capability & MTK_VENC_4K_CAPABILITY_ENABLE) {
                max_width = MTK_VENC_4K_MAX_W;
                max_height = MTK_VENC_4K_MAX_H;
        } else {
                max_width = MTK_VENC_HD_MAX_W;
                max_height = MTK_VENC_HD_MAX_H;
        }

        pix_fmt_mp->height = clamp(pix_fmt_mp->height, MTK_VENC_MIN_H, max_height);
        pix_fmt_mp->width = clamp(pix_fmt_mp->width, MTK_VENC_MIN_W, max_width);

        /* find next closer width align 16, height align 32, size align
         * 64 rectangle
         */
        tmp_w = pix_fmt_mp->width;
        tmp_h = pix_fmt_mp->height;
        v4l_bound_align_image(&pix_fmt_mp->width,
                              MTK_VENC_MIN_W,
                              max_width, 4,
                              &pix_fmt_mp->height,
                              MTK_VENC_MIN_H,
                              max_height, 5, 6);

        if (pix_fmt_mp->width < tmp_w && (pix_fmt_mp->width + 16) <= max_width)
                pix_fmt_mp->width += 16;
        if (pix_fmt_mp->height < tmp_h && (pix_fmt_mp->height + 32) <= max_height)
                pix_fmt_mp->height += 32;

        mtk_v4l2_venc_dbg(0, ctx,
                          "before resize wxh=%dx%d, after resize wxh=%dx%d, sizeimage=%d %d",
                          tmp_w, tmp_h, pix_fmt_mp->width,
                          pix_fmt_mp->height,
                          pix_fmt_mp->plane_fmt[0].sizeimage,
                          pix_fmt_mp->plane_fmt[1].sizeimage);

        pix_fmt_mp->num_planes = fmt->num_planes;
        pix_fmt_mp->plane_fmt[0].sizeimage =
                        pix_fmt_mp->width * pix_fmt_mp->height +
                        ((ALIGN(pix_fmt_mp->width, 16) * 2) * 16);
        pix_fmt_mp->plane_fmt[0].bytesperline = pix_fmt_mp->width;

        if (pix_fmt_mp->num_planes == 2) {
                pix_fmt_mp->plane_fmt[1].sizeimage =
                        (pix_fmt_mp->width * pix_fmt_mp->height) / 2 +
                        (ALIGN(pix_fmt_mp->width, 16) * 16);
                pix_fmt_mp->plane_fmt[2].sizeimage = 0;
                pix_fmt_mp->plane_fmt[1].bytesperline =
                                                pix_fmt_mp->width;
                pix_fmt_mp->plane_fmt[2].bytesperline = 0;
        } else if (pix_fmt_mp->num_planes == 3) {
                pix_fmt_mp->plane_fmt[1].sizeimage =
                pix_fmt_mp->plane_fmt[2].sizeimage =
                        (pix_fmt_mp->width * pix_fmt_mp->height) / 4 +
                        ((ALIGN(pix_fmt_mp->width, 16) / 2) * 16);
                pix_fmt_mp->plane_fmt[1].bytesperline =
                        pix_fmt_mp->plane_fmt[2].bytesperline =
                        pix_fmt_mp->width / 2;
        }

        pix_fmt_mp->flags = 0;

        return 0;
}

static void mtk_venc_set_param(struct mtk_vcodec_enc_ctx *ctx,
                               struct venc_enc_param *param)
{
        struct mtk_q_data *q_data_src = &ctx->q_data[MTK_Q_DATA_SRC];
        struct mtk_enc_params *enc_params = &ctx->enc_params;

        switch (q_data_src->fmt->fourcc) {
        case V4L2_PIX_FMT_YUV420M:
                param->input_yuv_fmt = VENC_YUV_FORMAT_I420;
                break;
        case V4L2_PIX_FMT_YVU420M:
                param->input_yuv_fmt = VENC_YUV_FORMAT_YV12;
                break;
        case V4L2_PIX_FMT_NV12M:
                param->input_yuv_fmt = VENC_YUV_FORMAT_NV12;
                break;
        case V4L2_PIX_FMT_NV21M:
                param->input_yuv_fmt = VENC_YUV_FORMAT_NV21;
                break;
        default:
                mtk_v4l2_venc_err(ctx, "Unsupported fourcc =%d", q_data_src->fmt->fourcc);
                break;
        }
        param->h264_profile = enc_params->h264_profile;
        param->h264_level = enc_params->h264_level;

        /* Config visible resolution */
        param->width = q_data_src->visible_width;
        param->height = q_data_src->visible_height;
        /* Config coded resolution */
        param->buf_width = q_data_src->coded_width;
        param->buf_height = q_data_src->coded_height;
        param->frm_rate = enc_params->framerate_num /
                        enc_params->framerate_denom;
        param->intra_period = enc_params->intra_period;
        param->gop_size = enc_params->gop_size;
        param->bitrate = enc_params->bitrate;

        mtk_v4l2_venc_dbg(0, ctx,
                          "fmt 0x%x, P/L %d/%d w/h %d/%d buf %d/%d fps/bps %d/%d gop %d i_per %d",
                          param->input_yuv_fmt, param->h264_profile,
                          param->h264_level, param->width, param->height,
                          param->buf_width, param->buf_height,
                          param->frm_rate, param->bitrate,
                          param->gop_size, param->intra_period);
}

static int vidioc_venc_s_fmt_cap(struct file *file, void *priv,
                             struct v4l2_format *f)
{
        struct mtk_vcodec_enc_ctx *ctx = file_to_enc_ctx(file);
        const struct mtk_vcodec_enc_pdata *pdata = ctx->dev->venc_pdata;
        struct vb2_queue *vq;
        struct mtk_q_data *q_data = mtk_venc_get_q_data(ctx, f->type);
        int i, ret;
        const struct mtk_video_fmt *fmt;

        vq = v4l2_m2m_get_vq(ctx->m2m_ctx, f->type);

        if (vb2_is_busy(vq)) {
                mtk_v4l2_venc_err(ctx, "queue busy");
                return -EBUSY;
        }

        fmt = mtk_venc_find_format(f->fmt.pix.pixelformat, pdata);
        if (!fmt) {
                fmt = &ctx->dev->venc_pdata->capture_formats[0];
                f->fmt.pix.pixelformat = fmt->fourcc;
        }

        q_data->fmt = fmt;
        vidioc_try_fmt_cap(f);

        q_data->coded_width = f->fmt.pix_mp.width;
        q_data->coded_height = f->fmt.pix_mp.height;
        q_data->field = f->fmt.pix_mp.field;

        for (i = 0; i < f->fmt.pix_mp.num_planes; i++) {
                struct v4l2_plane_pix_format    *plane_fmt;

                plane_fmt = &f->fmt.pix_mp.plane_fmt[i];
                q_data->bytesperline[i] = plane_fmt->bytesperline;
                q_data->sizeimage[i] = plane_fmt->sizeimage;
        }

        if (ctx->state == MTK_STATE_FREE) {
                ret = venc_if_init(ctx, q_data->fmt->fourcc);
                if (ret) {
                        mtk_v4l2_venc_err(ctx, "venc_if_init failed=%d, codec type=%x",
                                          ret, q_data->fmt->fourcc);
                        return -EBUSY;
                }
                ctx->state = MTK_STATE_INIT;
        }

        return 0;
}

static int vidioc_venc_s_fmt_out(struct file *file, void *priv,
                             struct v4l2_format *f)
{
        struct mtk_vcodec_enc_ctx *ctx = file_to_enc_ctx(file);
        const struct mtk_vcodec_enc_pdata *pdata = ctx->dev->venc_pdata;
        struct vb2_queue *vq;
        struct mtk_q_data *q_data = mtk_venc_get_q_data(ctx, f->type);
        int ret, i;
        const struct mtk_video_fmt *fmt;

        vq = v4l2_m2m_get_vq(ctx->m2m_ctx, f->type);

        if (vb2_is_busy(vq)) {
                mtk_v4l2_venc_err(ctx, "queue busy");
                return -EBUSY;
        }

        fmt = mtk_venc_find_format(f->fmt.pix.pixelformat, pdata);
        if (!fmt) {
                fmt = &ctx->dev->venc_pdata->output_formats[0];
                f->fmt.pix.pixelformat = fmt->fourcc;
        }

        ret = vidioc_try_fmt_out(ctx, f, fmt);
        if (ret)
                return ret;

        q_data->fmt = fmt;
        q_data->visible_width = f->fmt.pix_mp.width;
        q_data->visible_height = f->fmt.pix_mp.height;
        q_data->coded_width = f->fmt.pix_mp.width;
        q_data->coded_height = f->fmt.pix_mp.height;

        q_data->field = f->fmt.pix_mp.field;
        ctx->colorspace = f->fmt.pix_mp.colorspace;
        ctx->ycbcr_enc = f->fmt.pix_mp.ycbcr_enc;
        ctx->quantization = f->fmt.pix_mp.quantization;
        ctx->xfer_func = f->fmt.pix_mp.xfer_func;

        for (i = 0; i < f->fmt.pix_mp.num_planes; i++) {
                struct v4l2_plane_pix_format *plane_fmt;

                plane_fmt = &f->fmt.pix_mp.plane_fmt[i];
                q_data->bytesperline[i] = plane_fmt->bytesperline;
                q_data->sizeimage[i] = plane_fmt->sizeimage;
        }

        return 0;
}

static int vidioc_venc_g_fmt(struct file *file, void *priv,
                             struct v4l2_format *f)
{
        struct v4l2_pix_format_mplane *pix = &f->fmt.pix_mp;
        struct mtk_vcodec_enc_ctx *ctx = file_to_enc_ctx(file);
        struct mtk_q_data *q_data = mtk_venc_get_q_data(ctx, f->type);
        int i;

        pix->width = q_data->coded_width;
        pix->height = q_data->coded_height;
        pix->pixelformat = q_data->fmt->fourcc;
        pix->field = q_data->field;
        pix->num_planes = q_data->fmt->num_planes;
        for (i = 0; i < pix->num_planes; i++) {
                pix->plane_fmt[i].bytesperline = q_data->bytesperline[i];
                pix->plane_fmt[i].sizeimage = q_data->sizeimage[i];
        }

        pix->flags = 0;
        pix->colorspace = ctx->colorspace;
        pix->ycbcr_enc = ctx->ycbcr_enc;
        pix->quantization = ctx->quantization;
        pix->xfer_func = ctx->xfer_func;

        return 0;
}

static int vidioc_try_fmt_vid_cap_mplane(struct file *file, void *priv,
                                         struct v4l2_format *f)
{
        const struct mtk_video_fmt *fmt;
        struct mtk_vcodec_enc_ctx *ctx = file_to_enc_ctx(file);
        const struct mtk_vcodec_enc_pdata *pdata = ctx->dev->venc_pdata;

        fmt = mtk_venc_find_format(f->fmt.pix.pixelformat, pdata);
        if (!fmt) {
                fmt = &ctx->dev->venc_pdata->capture_formats[0];
                f->fmt.pix.pixelformat = fmt->fourcc;
        }
        f->fmt.pix_mp.colorspace = ctx->colorspace;
        f->fmt.pix_mp.ycbcr_enc = ctx->ycbcr_enc;
        f->fmt.pix_mp.quantization = ctx->quantization;
        f->fmt.pix_mp.xfer_func = ctx->xfer_func;

        vidioc_try_fmt_cap(f);

        return 0;
}

static int vidioc_try_fmt_vid_out_mplane(struct file *file, void *priv,
                                         struct v4l2_format *f)
{
        const struct mtk_video_fmt *fmt;
        struct mtk_vcodec_enc_ctx *ctx = file_to_enc_ctx(file);
        const struct mtk_vcodec_enc_pdata *pdata = ctx->dev->venc_pdata;

        fmt = mtk_venc_find_format(f->fmt.pix.pixelformat, pdata);
        if (!fmt) {
                fmt = &ctx->dev->venc_pdata->output_formats[0];
                f->fmt.pix.pixelformat = fmt->fourcc;
        }
        if (!f->fmt.pix_mp.colorspace) {
                f->fmt.pix_mp.colorspace = V4L2_COLORSPACE_REC709;
                f->fmt.pix_mp.ycbcr_enc = V4L2_YCBCR_ENC_DEFAULT;
                f->fmt.pix_mp.quantization = V4L2_QUANTIZATION_DEFAULT;
                f->fmt.pix_mp.xfer_func = V4L2_XFER_FUNC_DEFAULT;
        }

        return vidioc_try_fmt_out(ctx, f, fmt);
}

static int vidioc_venc_g_selection(struct file *file, void *priv,
                                     struct v4l2_selection *s)
{
        struct mtk_vcodec_enc_ctx *ctx = file_to_enc_ctx(file);
        struct mtk_q_data *q_data = mtk_venc_get_q_data(ctx, s->type);

        if (s->type != V4L2_BUF_TYPE_VIDEO_OUTPUT)
                return -EINVAL;

        switch (s->target) {
        case V4L2_SEL_TGT_CROP_DEFAULT:
        case V4L2_SEL_TGT_CROP_BOUNDS:
                s->r.top = 0;
                s->r.left = 0;
                s->r.width = q_data->coded_width;
                s->r.height = q_data->coded_height;
                break;
        case V4L2_SEL_TGT_CROP:
                s->r.top = 0;
                s->r.left = 0;
                s->r.width = q_data->visible_width;
                s->r.height = q_data->visible_height;
                break;
        default:
                return -EINVAL;
        }

        return 0;
}

static int vidioc_venc_s_selection(struct file *file, void *priv,
                                     struct v4l2_selection *s)
{
        struct mtk_vcodec_enc_ctx *ctx = file_to_enc_ctx(file);
        struct mtk_q_data *q_data = mtk_venc_get_q_data(ctx, s->type);

        if (s->type != V4L2_BUF_TYPE_VIDEO_OUTPUT)
                return -EINVAL;

        switch (s->target) {
        case V4L2_SEL_TGT_CROP:
                /* Only support crop from (0,0) */
                s->r.top = 0;
                s->r.left = 0;
                s->r.width = min(s->r.width, q_data->coded_width);
                s->r.height = min(s->r.height, q_data->coded_height);
                q_data->visible_width = s->r.width;
                q_data->visible_height = s->r.height;
                break;
        default:
                return -EINVAL;
        }
        return 0;
}

static int vidioc_venc_qbuf(struct file *file, void *priv,
                            struct v4l2_buffer *buf)
{
        struct mtk_vcodec_enc_ctx *ctx = file_to_enc_ctx(file);

        if (ctx->state == MTK_STATE_ABORT) {
                mtk_v4l2_venc_err(ctx, "[%d] Call on QBUF after unrecoverable error",
                                  ctx->id);
                return -EIO;
        }

        return v4l2_m2m_qbuf(file, ctx->m2m_ctx, buf);
}

static int vidioc_venc_dqbuf(struct file *file, void *priv,
                             struct v4l2_buffer *buf)
{
        struct mtk_vcodec_enc_ctx *ctx = file_to_enc_ctx(file);
        int ret;

        if (ctx->state == MTK_STATE_ABORT) {
                mtk_v4l2_venc_err(ctx, "[%d] Call on QBUF after unrecoverable error",
                                  ctx->id);
                return -EIO;
        }

        ret = v4l2_m2m_dqbuf(file, ctx->m2m_ctx, buf);
        if (ret)
                return ret;

        /*
         * Complete flush if the user dequeued the 0-payload LAST buffer.
         * We check the payload because a buffer with the LAST flag can also
         * be seen during resolution changes. If we happen to be flushing at
         * that time, the last buffer before the resolution changes could be
         * misinterpreted for the buffer generated by the flush and terminate
         * it earlier than we want.
         */
        if (!V4L2_TYPE_IS_OUTPUT(buf->type) &&
            buf->flags & V4L2_BUF_FLAG_LAST &&
            buf->m.planes[0].bytesused == 0 &&
            ctx->is_flushing) {
                /*
                 * Last CAPTURE buffer is dequeued, we can allow another flush
                 * to take place.
                 */
                ctx->is_flushing = false;
        }

        return 0;
}

static int vidioc_encoder_cmd(struct file *file, void *priv,
                              struct v4l2_encoder_cmd *cmd)
{
        struct mtk_vcodec_enc_ctx *ctx = file_to_enc_ctx(file);
        struct vb2_queue *src_vq, *dst_vq;
        int ret;

        if (ctx->state == MTK_STATE_ABORT) {
                mtk_v4l2_venc_err(ctx, "[%d] Call to CMD after unrecoverable error",
                                  ctx->id);
                return -EIO;
        }

        ret = v4l2_m2m_ioctl_try_encoder_cmd(file, priv, cmd);
        if (ret)
                return ret;

        /* Calling START or STOP is invalid if a flush is in progress */
        if (ctx->is_flushing)
                return -EBUSY;

        mtk_v4l2_venc_dbg(1, ctx, "encoder cmd=%u", cmd->cmd);

        dst_vq = v4l2_m2m_get_vq(ctx->m2m_ctx,
                                 V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE);
        switch (cmd->cmd) {
        case V4L2_ENC_CMD_STOP:
                src_vq = v4l2_m2m_get_vq(ctx->m2m_ctx,
                                         V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE);
                if (!vb2_is_streaming(src_vq)) {
                        mtk_v4l2_venc_dbg(1, ctx, "Output stream is off. No need to flush.");
                        return 0;
                }
                if (!vb2_is_streaming(dst_vq)) {
                        mtk_v4l2_venc_dbg(1, ctx, "Capture stream is off. No need to flush.");
                        return 0;
                }
                ctx->is_flushing = true;
                v4l2_m2m_buf_queue(ctx->m2m_ctx, &ctx->empty_flush_buf.vb);
                v4l2_m2m_try_schedule(ctx->m2m_ctx);
                break;

        case V4L2_ENC_CMD_START:
                vb2_clear_last_buffer_dequeued(dst_vq);
                break;

        default:
                return -EINVAL;
        }

        return 0;
}

const struct v4l2_ioctl_ops mtk_venc_ioctl_ops = {
        .vidioc_streamon                = v4l2_m2m_ioctl_streamon,
        .vidioc_streamoff               = v4l2_m2m_ioctl_streamoff,

        .vidioc_reqbufs                 = v4l2_m2m_ioctl_reqbufs,
        .vidioc_querybuf                = v4l2_m2m_ioctl_querybuf,
        .vidioc_qbuf                    = vidioc_venc_qbuf,
        .vidioc_dqbuf                   = vidioc_venc_dqbuf,

        .vidioc_querycap                = vidioc_venc_querycap,
        .vidioc_enum_fmt_vid_cap        = vidioc_enum_fmt_vid_cap,
        .vidioc_enum_fmt_vid_out        = vidioc_enum_fmt_vid_out,
        .vidioc_enum_framesizes         = vidioc_enum_framesizes,

        .vidioc_try_fmt_vid_cap_mplane  = vidioc_try_fmt_vid_cap_mplane,
        .vidioc_try_fmt_vid_out_mplane  = vidioc_try_fmt_vid_out_mplane,
        .vidioc_expbuf                  = v4l2_m2m_ioctl_expbuf,
        .vidioc_subscribe_event         = v4l2_ctrl_subscribe_event,
        .vidioc_unsubscribe_event       = v4l2_event_unsubscribe,

        .vidioc_s_parm                  = vidioc_venc_s_parm,
        .vidioc_g_parm                  = vidioc_venc_g_parm,
        .vidioc_s_fmt_vid_cap_mplane    = vidioc_venc_s_fmt_cap,
        .vidioc_s_fmt_vid_out_mplane    = vidioc_venc_s_fmt_out,

        .vidioc_g_fmt_vid_cap_mplane    = vidioc_venc_g_fmt,
        .vidioc_g_fmt_vid_out_mplane    = vidioc_venc_g_fmt,

        .vidioc_create_bufs             = v4l2_m2m_ioctl_create_bufs,
        .vidioc_prepare_buf             = v4l2_m2m_ioctl_prepare_buf,

        .vidioc_g_selection             = vidioc_venc_g_selection,
        .vidioc_s_selection             = vidioc_venc_s_selection,

        .vidioc_encoder_cmd             = vidioc_encoder_cmd,
        .vidioc_try_encoder_cmd         = v4l2_m2m_ioctl_try_encoder_cmd,
};

static int vb2ops_venc_queue_setup(struct vb2_queue *vq,
                                   unsigned int *nbuffers,
                                   unsigned int *nplanes,
                                   unsigned int sizes[],
                                   struct device *alloc_devs[])
{
        struct mtk_vcodec_enc_ctx *ctx = vb2_get_drv_priv(vq);
        struct mtk_q_data *q_data = mtk_venc_get_q_data(ctx, vq->type);
        unsigned int i;

        if (q_data == NULL)
                return -EINVAL;

        if (*nplanes) {
                if (*nplanes != q_data->fmt->num_planes)
                        return -EINVAL;
                for (i = 0; i < *nplanes; i++)
                        if (sizes[i] < q_data->sizeimage[i])
                                return -EINVAL;
        } else {
                *nplanes = q_data->fmt->num_planes;
                for (i = 0; i < *nplanes; i++)
                        sizes[i] = q_data->sizeimage[i];
        }

        return 0;
}

static int vb2ops_venc_buf_prepare(struct vb2_buffer *vb)
{
        struct mtk_vcodec_enc_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue);
        struct mtk_q_data *q_data = mtk_venc_get_q_data(ctx, vb->vb2_queue->type);
        int i;

        for (i = 0; i < q_data->fmt->num_planes; i++) {
                if (vb2_plane_size(vb, i) < q_data->sizeimage[i]) {
                        mtk_v4l2_venc_err(ctx, "data will not fit into plane %d (%lu < %d)",
                                          i, vb2_plane_size(vb, i), q_data->sizeimage[i]);
                        return -EINVAL;
                }
        }

        return 0;
}

static void vb2ops_venc_buf_queue(struct vb2_buffer *vb)
{
        struct mtk_vcodec_enc_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue);
        struct vb2_v4l2_buffer *vb2_v4l2 =
                        container_of(vb, struct vb2_v4l2_buffer, vb2_buf);

        struct mtk_video_enc_buf *mtk_buf =
                        container_of(vb2_v4l2, struct mtk_video_enc_buf,
                                     m2m_buf.vb);

        if ((vb->vb2_queue->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) &&
            (ctx->param_change != MTK_ENCODE_PARAM_NONE)) {
                mtk_v4l2_venc_dbg(1, ctx, "[%d] Before id=%d encode parameter change %x",
                                  ctx->id, vb2_v4l2->vb2_buf.index, ctx->param_change);
                mtk_buf->param_change = ctx->param_change;
                mtk_buf->enc_params = ctx->enc_params;
                ctx->param_change = MTK_ENCODE_PARAM_NONE;
        }

        v4l2_m2m_buf_queue(ctx->m2m_ctx, to_vb2_v4l2_buffer(vb));
}

static int vb2ops_venc_start_streaming(struct vb2_queue *q, unsigned int count)
{
        struct mtk_vcodec_enc_ctx *ctx = vb2_get_drv_priv(q);
        struct venc_enc_param param = { };
        int ret;
        int i;

        /* Once state turn into MTK_STATE_ABORT, we need stop_streaming
          * to clear it
          */
        if ((ctx->state == MTK_STATE_ABORT) || (ctx->state == MTK_STATE_FREE)) {
                ret = -EIO;
                goto err_start_stream;
        }

        /* Do the initialization when both start_streaming have been called */
        if (V4L2_TYPE_IS_OUTPUT(q->type)) {
                if (!vb2_start_streaming_called(&ctx->m2m_ctx->cap_q_ctx.q))
                        return 0;
        } else {
                if (!vb2_start_streaming_called(&ctx->m2m_ctx->out_q_ctx.q))
                        return 0;
        }

        mtk_venc_set_param(ctx, &param);
        ret = venc_if_set_param(ctx, VENC_SET_PARAM_ENC, &param);
        if (ret) {
                mtk_v4l2_venc_err(ctx, "venc_if_set_param failed=%d", ret);
                ctx->state = MTK_STATE_ABORT;
                goto err_start_stream;
        }
        ctx->param_change = MTK_ENCODE_PARAM_NONE;

        if ((ctx->q_data[MTK_Q_DATA_DST].fmt->fourcc == V4L2_PIX_FMT_H264) &&
            (ctx->enc_params.seq_hdr_mode !=
                                V4L2_MPEG_VIDEO_HEADER_MODE_SEPARATE)) {
                ret = venc_if_set_param(ctx,
                                        VENC_SET_PARAM_PREPEND_HEADER,
                                        NULL);
                if (ret) {
                        mtk_v4l2_venc_err(ctx, "venc_if_set_param failed=%d", ret);
                        ctx->state = MTK_STATE_ABORT;
                        goto err_start_stream;
                }
                ctx->state = MTK_STATE_HEADER;
        }

        return 0;

err_start_stream:
        for (i = 0; i < vb2_get_num_buffers(q); ++i) {
                struct vb2_buffer *buf = vb2_get_buffer(q, i);

                /*
                 * FIXME: This check is not needed as only active buffers
                 * can be marked as done.
                 */
                if (buf && buf->state == VB2_BUF_STATE_ACTIVE) {
                        mtk_v4l2_venc_dbg(0, ctx, "[%d] id=%d, type=%d, %d->VB2_BUF_STATE_QUEUED",
                                          ctx->id, i, q->type, (int)buf->state);
                        v4l2_m2m_buf_done(to_vb2_v4l2_buffer(buf),
                                          VB2_BUF_STATE_QUEUED);
                }
        }

        return ret;
}

static void vb2ops_venc_stop_streaming(struct vb2_queue *q)
{
        struct mtk_vcodec_enc_ctx *ctx = vb2_get_drv_priv(q);
        struct vb2_v4l2_buffer *src_buf, *dst_buf;
        int ret;

        mtk_v4l2_venc_dbg(2, ctx, "[%d]-> type=%d", ctx->id, q->type);

        if (q->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) {
                while ((dst_buf = v4l2_m2m_dst_buf_remove(ctx->m2m_ctx))) {
                        vb2_set_plane_payload(&dst_buf->vb2_buf, 0, 0);
                        v4l2_m2m_buf_done(dst_buf, VB2_BUF_STATE_ERROR);
                }
                /* STREAMOFF on the CAPTURE queue completes any ongoing flush */
                if (ctx->is_flushing) {
                        struct v4l2_m2m_buffer *b, *n;

                        mtk_v4l2_venc_dbg(1, ctx, "STREAMOFF called while flushing");
                        /*
                         * STREAMOFF could be called before the flush buffer is
                         * dequeued. Check whether empty flush buf is still in
                         * queue before removing it.
                         */
                        v4l2_m2m_for_each_src_buf_safe(ctx->m2m_ctx, b, n) {
                                if (b == &ctx->empty_flush_buf) {
                                        v4l2_m2m_src_buf_remove_by_buf(ctx->m2m_ctx, &b->vb);
                                        break;
                                }
                        }
                        ctx->is_flushing = false;
                }
        } else {
                while ((src_buf = v4l2_m2m_src_buf_remove(ctx->m2m_ctx))) {
                        if (src_buf != &ctx->empty_flush_buf.vb)
                                v4l2_m2m_buf_done(src_buf, VB2_BUF_STATE_ERROR);
                }
                if (ctx->is_flushing) {
                        /*
                         * If we are in the middle of a flush, put the flush
                         * buffer back into the queue so the next CAPTURE
                         * buffer gets returned with the LAST flag set.
                         */
                        v4l2_m2m_buf_queue(ctx->m2m_ctx,
                                           &ctx->empty_flush_buf.vb);
                }
        }

        if ((q->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE &&
             vb2_is_streaming(&ctx->m2m_ctx->out_q_ctx.q)) ||
            (q->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE &&
             vb2_is_streaming(&ctx->m2m_ctx->cap_q_ctx.q))) {
                mtk_v4l2_venc_dbg(1, ctx, "[%d]-> q type %d out=%d cap=%d",
                                  ctx->id, q->type,
                                  vb2_is_streaming(&ctx->m2m_ctx->out_q_ctx.q),
                                  vb2_is_streaming(&ctx->m2m_ctx->cap_q_ctx.q));
                return;
        }

        /* Release the encoder if both streams are stopped. */
        ret = venc_if_deinit(ctx);
        if (ret)
                mtk_v4l2_venc_err(ctx, "venc_if_deinit failed=%d", ret);

        ctx->state = MTK_STATE_FREE;
}

static int vb2ops_venc_buf_out_validate(struct vb2_buffer *vb)
{
        struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);

        vbuf->field = V4L2_FIELD_NONE;
        return 0;
}

static const struct vb2_ops mtk_venc_vb2_ops = {
        .queue_setup            = vb2ops_venc_queue_setup,
        .buf_out_validate       = vb2ops_venc_buf_out_validate,
        .buf_prepare            = vb2ops_venc_buf_prepare,
        .buf_queue              = vb2ops_venc_buf_queue,
        .start_streaming        = vb2ops_venc_start_streaming,
        .stop_streaming         = vb2ops_venc_stop_streaming,
};

static int mtk_venc_encode_header(void *priv)
{
        struct mtk_vcodec_enc_ctx *ctx = priv;
        int ret;
        struct vb2_v4l2_buffer *src_buf, *dst_buf;
        struct mtk_vcodec_mem bs_buf;
        struct venc_done_result enc_result = { };

        dst_buf = v4l2_m2m_dst_buf_remove(ctx->m2m_ctx);
        if (!dst_buf) {
                mtk_v4l2_venc_dbg(1, ctx, "No dst buffer");
                return -EINVAL;
        }

        bs_buf.va = vb2_plane_vaddr(&dst_buf->vb2_buf, 0);
        bs_buf.dma_addr = vb2_dma_contig_plane_dma_addr(&dst_buf->vb2_buf, 0);
        bs_buf.size = (size_t)dst_buf->vb2_buf.planes[0].length;

        mtk_v4l2_venc_dbg(1, ctx,
                          "[%d] buf id=%d va=0x%p dma_addr=0x%llx size=%zu",
                          ctx->id, dst_buf->vb2_buf.index, bs_buf.va,
                          (u64)bs_buf.dma_addr, bs_buf.size);

        ret = venc_if_encode(ctx,
                        VENC_START_OPT_ENCODE_SEQUENCE_HEADER,
                        NULL, &bs_buf, &enc_result);

        if (ret) {
                vb2_set_plane_payload(&dst_buf->vb2_buf, 0, 0);
                ctx->state = MTK_STATE_ABORT;
                v4l2_m2m_buf_done(dst_buf, VB2_BUF_STATE_ERROR);
                mtk_v4l2_venc_err(ctx, "venc_if_encode failed=%d", ret);
                return -EINVAL;
        }
        src_buf = v4l2_m2m_next_src_buf(ctx->m2m_ctx);
        if (src_buf) {
                dst_buf->vb2_buf.timestamp = src_buf->vb2_buf.timestamp;
                dst_buf->timecode = src_buf->timecode;
        } else {
                mtk_v4l2_venc_err(ctx, "No timestamp for the header buffer.");
        }

        ctx->state = MTK_STATE_HEADER;
        vb2_set_plane_payload(&dst_buf->vb2_buf, 0, enc_result.bs_size);
        v4l2_m2m_buf_done(dst_buf, VB2_BUF_STATE_DONE);

        return 0;
}

static int mtk_venc_param_change(struct mtk_vcodec_enc_ctx *ctx)
{
        struct venc_enc_param enc_prm = { };
        struct vb2_v4l2_buffer *vb2_v4l2 = v4l2_m2m_next_src_buf(ctx->m2m_ctx);
        struct mtk_video_enc_buf *mtk_buf;
        int ret = 0;

        /* Don't upcast the empty flush buffer */
        if (vb2_v4l2 == &ctx->empty_flush_buf.vb)
                return 0;

        mtk_buf = container_of(vb2_v4l2, struct mtk_video_enc_buf, m2m_buf.vb);

        if (mtk_buf->param_change == MTK_ENCODE_PARAM_NONE)
                return 0;

        if (mtk_buf->param_change & MTK_ENCODE_PARAM_BITRATE) {
                enc_prm.bitrate = mtk_buf->enc_params.bitrate;
                mtk_v4l2_venc_dbg(1, ctx, "[%d] id=%d, change param br=%d",
                                  ctx->id, vb2_v4l2->vb2_buf.index, enc_prm.bitrate);
                ret |= venc_if_set_param(ctx,
                                         VENC_SET_PARAM_ADJUST_BITRATE,
                                         &enc_prm);
        }
        if (!ret && mtk_buf->param_change & MTK_ENCODE_PARAM_FRAMERATE) {
                enc_prm.frm_rate = mtk_buf->enc_params.framerate_num /
                                   mtk_buf->enc_params.framerate_denom;
                mtk_v4l2_venc_dbg(1, ctx, "[%d] id=%d, change param fr=%d",
                                  ctx->id, vb2_v4l2->vb2_buf.index, enc_prm.frm_rate);
                ret |= venc_if_set_param(ctx,
                                         VENC_SET_PARAM_ADJUST_FRAMERATE,
                                         &enc_prm);
        }
        if (!ret && mtk_buf->param_change & MTK_ENCODE_PARAM_GOP_SIZE) {
                enc_prm.gop_size = mtk_buf->enc_params.gop_size;
                mtk_v4l2_venc_dbg(1, ctx, "change param intra period=%d", enc_prm.gop_size);
                ret |= venc_if_set_param(ctx,
                                         VENC_SET_PARAM_GOP_SIZE,
                                         &enc_prm);
        }
        if (!ret && mtk_buf->param_change & MTK_ENCODE_PARAM_FORCE_INTRA) {
                mtk_v4l2_venc_dbg(1, ctx, "[%d] id=%d, change param force I=%d",
                                  ctx->id, vb2_v4l2->vb2_buf.index,
                                  mtk_buf->enc_params.force_intra);
                if (mtk_buf->enc_params.force_intra)
                        ret |= venc_if_set_param(ctx,
                                                 VENC_SET_PARAM_FORCE_INTRA,
                                                 NULL);
        }

        mtk_buf->param_change = MTK_ENCODE_PARAM_NONE;

        if (ret) {
                ctx->state = MTK_STATE_ABORT;
                mtk_v4l2_venc_err(ctx, "venc_if_set_param %d failed=%d",
                                  mtk_buf->param_change, ret);
                return -1;
        }

        return 0;
}

/*
 * v4l2_m2m_streamoff() holds dev_mutex and waits mtk_venc_worker()
 * to call v4l2_m2m_job_finish().
 * If mtk_venc_worker() tries to acquire dev_mutex, it will deadlock.
 * So this function must not try to acquire dev->dev_mutex.
 * This means v4l2 ioctls and mtk_venc_worker() can run at the same time.
 * mtk_venc_worker() should be carefully implemented to avoid bugs.
 */
static void mtk_venc_worker(struct work_struct *work)
{
        struct mtk_vcodec_enc_ctx *ctx = container_of(work, struct mtk_vcodec_enc_ctx,
                                    encode_work);
        struct vb2_v4l2_buffer *src_buf, *dst_buf;
        struct venc_frm_buf frm_buf = { };
        struct mtk_vcodec_mem bs_buf;
        struct venc_done_result enc_result = { };
        int ret, i;

        /* check dst_buf, dst_buf may be removed in device_run
         * to stored encdoe header so we need check dst_buf and
         * call job_finish here to prevent recursion
         */
        dst_buf = v4l2_m2m_dst_buf_remove(ctx->m2m_ctx);
        if (!dst_buf) {
                v4l2_m2m_job_finish(ctx->dev->m2m_dev_enc, ctx->m2m_ctx);
                return;
        }

        src_buf = v4l2_m2m_src_buf_remove(ctx->m2m_ctx);

        /*
         * If we see the flush buffer, send an empty buffer with the LAST flag
         * to the client. is_flushing will be reset at the time the buffer
         * is dequeued.
         */
        if (src_buf == &ctx->empty_flush_buf.vb) {
                vb2_set_plane_payload(&dst_buf->vb2_buf, 0, 0);
                dst_buf->flags |= V4L2_BUF_FLAG_LAST;
                v4l2_m2m_buf_done(dst_buf, VB2_BUF_STATE_DONE);
                v4l2_m2m_job_finish(ctx->dev->m2m_dev_enc, ctx->m2m_ctx);
                return;
        }

        for (i = 0; i < src_buf->vb2_buf.num_planes ; i++) {
                frm_buf.fb_addr[i].dma_addr =
                                vb2_dma_contig_plane_dma_addr(&src_buf->vb2_buf, i);
                frm_buf.fb_addr[i].size =
                                (size_t)src_buf->vb2_buf.planes[i].length;
        }
        bs_buf.va = vb2_plane_vaddr(&dst_buf->vb2_buf, 0);
        bs_buf.dma_addr = vb2_dma_contig_plane_dma_addr(&dst_buf->vb2_buf, 0);
        bs_buf.size = (size_t)dst_buf->vb2_buf.planes[0].length;

        mtk_v4l2_venc_dbg(2, ctx,
                          "Framebuf PA=%llx Size=0x%zx;PA=0x%llx Size=0x%zx;PA=0x%llx Size=%zu",
                          (u64)frm_buf.fb_addr[0].dma_addr, frm_buf.fb_addr[0].size,
                          (u64)frm_buf.fb_addr[1].dma_addr, frm_buf.fb_addr[1].size,
                          (u64)frm_buf.fb_addr[2].dma_addr, frm_buf.fb_addr[2].size);

        ret = venc_if_encode(ctx, VENC_START_OPT_ENCODE_FRAME,
                             &frm_buf, &bs_buf, &enc_result);

        dst_buf->vb2_buf.timestamp = src_buf->vb2_buf.timestamp;
        dst_buf->timecode = src_buf->timecode;

        if (enc_result.is_key_frm)
                dst_buf->flags |= V4L2_BUF_FLAG_KEYFRAME;

        if (ret) {
                v4l2_m2m_buf_done(src_buf, VB2_BUF_STATE_ERROR);
                vb2_set_plane_payload(&dst_buf->vb2_buf, 0, 0);
                v4l2_m2m_buf_done(dst_buf, VB2_BUF_STATE_ERROR);
                mtk_v4l2_venc_err(ctx, "venc_if_encode failed=%d", ret);
        } else {
                v4l2_m2m_buf_done(src_buf, VB2_BUF_STATE_DONE);
                vb2_set_plane_payload(&dst_buf->vb2_buf, 0, enc_result.bs_size);
                v4l2_m2m_buf_done(dst_buf, VB2_BUF_STATE_DONE);
                mtk_v4l2_venc_dbg(2, ctx, "venc_if_encode bs size=%d",
                                  enc_result.bs_size);
        }

        v4l2_m2m_job_finish(ctx->dev->m2m_dev_enc, ctx->m2m_ctx);

        mtk_v4l2_venc_dbg(1, ctx, "<=== src_buf[%d] dst_buf[%d] venc_if_encode ret=%d Size=%u===>",
                          src_buf->vb2_buf.index, dst_buf->vb2_buf.index, ret, enc_result.bs_size);
}

static void m2mops_venc_device_run(void *priv)
{
        struct mtk_vcodec_enc_ctx *ctx = priv;

        if ((ctx->q_data[MTK_Q_DATA_DST].fmt->fourcc == V4L2_PIX_FMT_H264) &&
            (ctx->state != MTK_STATE_HEADER)) {
                /* encode h264 sps/pps header */
                mtk_venc_encode_header(ctx);
                queue_work(ctx->dev->encode_workqueue, &ctx->encode_work);
                return;
        }

        mtk_venc_param_change(ctx);
        queue_work(ctx->dev->encode_workqueue, &ctx->encode_work);
}

static int m2mops_venc_job_ready(void *m2m_priv)
{
        struct mtk_vcodec_enc_ctx *ctx = m2m_priv;

        if (ctx->state == MTK_STATE_ABORT || ctx->state == MTK_STATE_FREE) {
                mtk_v4l2_venc_dbg(3, ctx, "[%d]Not ready: state=0x%x.", ctx->id, ctx->state);
                return 0;
        }

        return 1;
}

static void m2mops_venc_job_abort(void *priv)
{
        struct mtk_vcodec_enc_ctx *ctx = priv;

        ctx->state = MTK_STATE_ABORT;
}

const struct v4l2_m2m_ops mtk_venc_m2m_ops = {
        .device_run     = m2mops_venc_device_run,
        .job_ready      = m2mops_venc_job_ready,
        .job_abort      = m2mops_venc_job_abort,
};

void mtk_vcodec_enc_set_default_params(struct mtk_vcodec_enc_ctx *ctx)
{
        struct mtk_q_data *q_data;

        ctx->m2m_ctx->q_lock = &ctx->q_mutex;
        ctx->fh.m2m_ctx = ctx->m2m_ctx;
        ctx->fh.ctrl_handler = &ctx->ctrl_hdl;
        INIT_WORK(&ctx->encode_work, mtk_venc_worker);

        ctx->colorspace = V4L2_COLORSPACE_REC709;
        ctx->ycbcr_enc = V4L2_YCBCR_ENC_DEFAULT;
        ctx->quantization = V4L2_QUANTIZATION_DEFAULT;
        ctx->xfer_func = V4L2_XFER_FUNC_DEFAULT;

        q_data = &ctx->q_data[MTK_Q_DATA_SRC];
        memset(q_data, 0, sizeof(struct mtk_q_data));
        q_data->visible_width = DFT_CFG_WIDTH;
        q_data->visible_height = DFT_CFG_HEIGHT;
        q_data->coded_width = DFT_CFG_WIDTH;
        q_data->coded_height = DFT_CFG_HEIGHT;
        q_data->field = V4L2_FIELD_NONE;

        q_data->fmt = &ctx->dev->venc_pdata->output_formats[0];

        v4l_bound_align_image(&q_data->coded_width,
                                MTK_VENC_MIN_W,
                                MTK_VENC_HD_MAX_W, 4,
                                &q_data->coded_height,
                                MTK_VENC_MIN_H,
                                MTK_VENC_HD_MAX_H, 5, 6);

        if (q_data->coded_width < DFT_CFG_WIDTH &&
                (q_data->coded_width + 16) <= MTK_VENC_HD_MAX_W)
                q_data->coded_width += 16;
        if (q_data->coded_height < DFT_CFG_HEIGHT &&
                (q_data->coded_height + 32) <= MTK_VENC_HD_MAX_H)
                q_data->coded_height += 32;

        q_data->sizeimage[0] =
                q_data->coded_width * q_data->coded_height+
                ((ALIGN(q_data->coded_width, 16) * 2) * 16);
        q_data->bytesperline[0] = q_data->coded_width;
        q_data->sizeimage[1] =
                (q_data->coded_width * q_data->coded_height) / 2 +
                (ALIGN(q_data->coded_width, 16) * 16);
        q_data->bytesperline[1] = q_data->coded_width;

        q_data = &ctx->q_data[MTK_Q_DATA_DST];
        memset(q_data, 0, sizeof(struct mtk_q_data));
        q_data->coded_width = DFT_CFG_WIDTH;
        q_data->coded_height = DFT_CFG_HEIGHT;
        q_data->fmt = &ctx->dev->venc_pdata->capture_formats[0];
        q_data->field = V4L2_FIELD_NONE;
        ctx->q_data[MTK_Q_DATA_DST].sizeimage[0] =
                DFT_CFG_WIDTH * DFT_CFG_HEIGHT;
        ctx->q_data[MTK_Q_DATA_DST].bytesperline[0] = 0;

        ctx->enc_params.framerate_num = MTK_DEFAULT_FRAMERATE_NUM;
        ctx->enc_params.framerate_denom = MTK_DEFAULT_FRAMERATE_DENOM;
}

int mtk_vcodec_enc_ctrls_setup(struct mtk_vcodec_enc_ctx *ctx)
{
        const struct v4l2_ctrl_ops *ops = &mtk_vcodec_enc_ctrl_ops;
        struct v4l2_ctrl_handler *handler = &ctx->ctrl_hdl;
        u8 h264_max_level;

        if (ctx->dev->enc_capability & MTK_VENC_4K_CAPABILITY_ENABLE)
                h264_max_level = V4L2_MPEG_VIDEO_H264_LEVEL_5_1;
        else
                h264_max_level = V4L2_MPEG_VIDEO_H264_LEVEL_4_2;

        v4l2_ctrl_handler_init(handler, MTK_MAX_CTRLS_HINT);

        v4l2_ctrl_new_std(handler, ops, V4L2_CID_MIN_BUFFERS_FOR_OUTPUT,
                          1, 1, 1, 1);
        v4l2_ctrl_new_std(handler, ops, V4L2_CID_MPEG_VIDEO_BITRATE,
                          ctx->dev->venc_pdata->min_bitrate,
                          ctx->dev->venc_pdata->max_bitrate, 1, 4000000);
        v4l2_ctrl_new_std(handler, ops, V4L2_CID_MPEG_VIDEO_B_FRAMES,
                        0, 2, 1, 0);
        v4l2_ctrl_new_std(handler, ops, V4L2_CID_MPEG_VIDEO_FRAME_RC_ENABLE,
                        0, 1, 1, 1);
        v4l2_ctrl_new_std(handler, ops, V4L2_CID_MPEG_VIDEO_H264_MAX_QP,
                        0, 51, 1, 51);
        v4l2_ctrl_new_std(handler, ops, V4L2_CID_MPEG_VIDEO_H264_I_PERIOD,
                        0, 65535, 1, 0);
        v4l2_ctrl_new_std(handler, ops, V4L2_CID_MPEG_VIDEO_GOP_SIZE,
                        0, 65535, 1, 0);
        v4l2_ctrl_new_std(handler, ops, V4L2_CID_MPEG_VIDEO_MB_RC_ENABLE,
                        0, 1, 1, 0);
        v4l2_ctrl_new_std(handler, ops, V4L2_CID_MPEG_VIDEO_FORCE_KEY_FRAME,
                        0, 0, 0, 0);
        v4l2_ctrl_new_std_menu(handler, ops,
                        V4L2_CID_MPEG_VIDEO_HEADER_MODE,
                        V4L2_MPEG_VIDEO_HEADER_MODE_JOINED_WITH_1ST_FRAME,
                        0, V4L2_MPEG_VIDEO_HEADER_MODE_SEPARATE);
        v4l2_ctrl_new_std_menu(handler, ops, V4L2_CID_MPEG_VIDEO_H264_PROFILE,
                        V4L2_MPEG_VIDEO_H264_PROFILE_HIGH,
                        ~((1 << V4L2_MPEG_VIDEO_H264_PROFILE_BASELINE) |
                          (1 << V4L2_MPEG_VIDEO_H264_PROFILE_MAIN) |
                          (1 << V4L2_MPEG_VIDEO_H264_PROFILE_HIGH)),
                        V4L2_MPEG_VIDEO_H264_PROFILE_HIGH);
        v4l2_ctrl_new_std_menu(handler, ops, V4L2_CID_MPEG_VIDEO_H264_LEVEL,
                               h264_max_level,
                               0, V4L2_MPEG_VIDEO_H264_LEVEL_4_0);
        v4l2_ctrl_new_std_menu(handler, ops, V4L2_CID_MPEG_VIDEO_VP8_PROFILE,
                               V4L2_MPEG_VIDEO_VP8_PROFILE_0, 0, V4L2_MPEG_VIDEO_VP8_PROFILE_0);
        v4l2_ctrl_new_std_menu(handler, ops, V4L2_CID_MPEG_VIDEO_BITRATE_MODE,
                               V4L2_MPEG_VIDEO_BITRATE_MODE_CBR,
                               ~(1 << V4L2_MPEG_VIDEO_BITRATE_MODE_CBR),
                               V4L2_MPEG_VIDEO_BITRATE_MODE_CBR);


        if (handler->error) {
                mtk_v4l2_venc_err(ctx, "Init control handler fail %d", handler->error);
                return handler->error;
        }

        v4l2_ctrl_handler_setup(&ctx->ctrl_hdl);

        return 0;
}

int mtk_vcodec_enc_queue_init(void *priv, struct vb2_queue *src_vq,
                              struct vb2_queue *dst_vq)
{
        struct mtk_vcodec_enc_ctx *ctx = priv;
        int ret;

        /* Note: VB2_USERPTR works with dma-contig because mt8173
         * support iommu
         * https://patchwork.kernel.org/patch/8335461/
         * https://patchwork.kernel.org/patch/7596181/
         */
        src_vq->type            = V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE;
        src_vq->io_modes        = VB2_DMABUF | VB2_MMAP | VB2_USERPTR;
        src_vq->drv_priv        = ctx;
        src_vq->buf_struct_size = sizeof(struct mtk_video_enc_buf);
        src_vq->ops             = &mtk_venc_vb2_ops;
        src_vq->mem_ops         = &vb2_dma_contig_memops;
        src_vq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY;
        src_vq->lock            = &ctx->q_mutex;
        src_vq->dev             = &ctx->dev->plat_dev->dev;

        ret = vb2_queue_init(src_vq);
        if (ret)
                return ret;

        dst_vq->type            = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE;
        dst_vq->io_modes        = VB2_DMABUF | VB2_MMAP | VB2_USERPTR;
        dst_vq->drv_priv        = ctx;
        dst_vq->buf_struct_size = sizeof(struct v4l2_m2m_buffer);
        dst_vq->ops             = &mtk_venc_vb2_ops;
        dst_vq->mem_ops         = &vb2_dma_contig_memops;
        dst_vq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY;
        dst_vq->lock            = &ctx->q_mutex;
        dst_vq->dev             = &ctx->dev->plat_dev->dev;

        return vb2_queue_init(dst_vq);
}

int mtk_venc_unlock(struct mtk_vcodec_enc_ctx *ctx)
{
        struct mtk_vcodec_enc_dev *dev = ctx->dev;

        mutex_unlock(&dev->enc_mutex);
        return 0;
}

int mtk_venc_lock(struct mtk_vcodec_enc_ctx *ctx)
{
        struct mtk_vcodec_enc_dev *dev = ctx->dev;

        mutex_lock(&dev->enc_mutex);
        return 0;
}

void mtk_vcodec_enc_release(struct mtk_vcodec_enc_ctx *ctx)
{
        int ret = venc_if_deinit(ctx);

        if (ret)
                mtk_v4l2_venc_err(ctx, "venc_if_deinit failed=%d", ret);

        ctx->state = MTK_STATE_FREE;
}