Re: [PATCH 08/14] media: medkatek: vcodec: support one plane capture buffer

["Yunfei Dong (董云飞)" <Yunfei.Dong@mediatek.com>]

Hi Nicolas,

Thanks for your advice.
On Mon, 2023-09-11 at 11:44 -0400, Nicolas Dufresne wrote:
> Hi,
> 
> Le lundi 11 septembre 2023 à 20:59 +0800, Yunfei Dong a écrit :
> > The capture buffer has two planes for format MM21, but user space
> > only
> > allocate secure memory for plane[0], and the size is Y data + uv
> > data.
> > The driver need to support one plane decoder for svp mode.
> 
> I'm sorry, but in current V4L2 status, you must introduce a new
> format. Assuming
> the second M means MPLANE, this format would be MT21 (though you
> already used
> that fourcc for MT21C) ?
> 

Just using the first plane for format MM21 in order to support svp mode
according google's suggestion. The plane[1] won't be used to allocate
memory. Whether it's better to add one format to support one plane? Not
using MM21.

Best Regards,
Yunfei Dong
> Nicolas
> 
> > 
> > Signed-off-by: Yunfei Dong <yunfei.dong@mediatek.com>
> > ---
> >  .../mediatek/vcodec/decoder/mtk_vcodec_dec.c  | 24 ++++++++++++---
> > ----
> >  .../vcodec/decoder/mtk_vcodec_dec_stateless.c | 13 ++++++----
> >  .../decoder/vdec/vdec_h264_req_common.c       | 16 +++++++------
> >  .../mediatek/vcodec/decoder/vdec_drv_if.c     |  4 ++--
> >  4 files changed, 34 insertions(+), 23 deletions(-)
> > 
> > diff --git
> > a/drivers/media/platform/mediatek/vcodec/decoder/mtk_vcodec_dec.c
> > b/drivers/media/platform/mediatek/vcodec/decoder/mtk_vcodec_dec.c
> > index 91ed576d6821..457c3e2979c9 100644
> > ---
> > a/drivers/media/platform/mediatek/vcodec/decoder/mtk_vcodec_dec.c
> > +++
> > b/drivers/media/platform/mediatek/vcodec/decoder/mtk_vcodec_dec.c
> > @@ -541,14 +541,15 @@ static int vidioc_vdec_s_fmt(struct file
> > *file, void *priv,
> >  			ctx->q_data[MTK_Q_DATA_DST].bytesperline[0] =
> >  				ctx->picinfo.buf_w;
> >  		} else {
> > -			ctx->q_data[MTK_Q_DATA_DST].sizeimage[0] =
> > -				ctx->picinfo.fb_sz[0];
> > -			ctx->q_data[MTK_Q_DATA_DST].bytesperline[0] =
> > -				ctx->picinfo.buf_w;
> > -			ctx->q_data[MTK_Q_DATA_DST].sizeimage[1] =
> > -				ctx->picinfo.fb_sz[1];
> > -			ctx->q_data[MTK_Q_DATA_DST].bytesperline[1] =
> > -				ctx->picinfo.buf_w;
> > +			if (ctx->is_svp_mode)
> > +				ctx-
> > >q_data[MTK_Q_DATA_DST].sizeimage[0] =
> > +					ctx->picinfo.fb_sz[0] + ctx-
> > >picinfo.fb_sz[1];
> > +			else
> > +				ctx-
> > >q_data[MTK_Q_DATA_DST].sizeimage[0] = ctx->picinfo.fb_sz[0];
> > +
> > +			ctx->q_data[MTK_Q_DATA_DST].bytesperline[0] =
> > ctx->picinfo.buf_w;
> > +			ctx->q_data[MTK_Q_DATA_DST].sizeimage[1] = ctx-
> > >picinfo.fb_sz[1];
> > +			ctx->q_data[MTK_Q_DATA_DST].bytesperline[1] =
> > ctx->picinfo.buf_w;
> >  		}
> >  
> >  		ctx->q_data[MTK_Q_DATA_DST].coded_width = ctx-
> > >picinfo.buf_w;
> > @@ -673,7 +674,12 @@ static int vidioc_vdec_g_fmt(struct file
> > *file, void *priv,
> >  		 * So we just return picinfo yet, and update picinfo in
> >  		 * stop_streaming hook function
> >  		 */
> > -		q_data->sizeimage[0] = ctx->picinfo.fb_sz[0];
> > +
> > +		if (ctx->is_svp_mode)
> > +			q_data->sizeimage[0] = ctx->picinfo.fb_sz[0] +
> > ctx->picinfo.fb_sz[1];
> > +		else
> > +			q_data->sizeimage[0] = ctx->picinfo.fb_sz[0];
> > +
> >  		q_data->sizeimage[1] = ctx->picinfo.fb_sz[1];
> >  		q_data->bytesperline[0] = ctx-
> > >last_decoded_picinfo.buf_w;
> >  		q_data->bytesperline[1] = ctx-
> > >last_decoded_picinfo.buf_w;
> > diff --git
> > a/drivers/media/platform/mediatek/vcodec/decoder/mtk_vcodec_dec_sta
> > teless.c
> > b/drivers/media/platform/mediatek/vcodec/decoder/mtk_vcodec_dec_sta
> > teless.c
> > index e29c9c58f3da..2ea517883a86 100644
> > ---
> > a/drivers/media/platform/mediatek/vcodec/decoder/mtk_vcodec_dec_sta
> > teless.c
> > +++
> > b/drivers/media/platform/mediatek/vcodec/decoder/mtk_vcodec_dec_sta
> > teless.c
> > @@ -256,11 +256,12 @@ static struct vdec_fb
> > *vdec_get_cap_buffer(struct mtk_vcodec_dec_ctx *ctx)
> >  	framebuf = container_of(vb2_v4l2, struct mtk_video_dec_buf,
> > m2m_buf.vb);
> >  
> >  	pfb = &framebuf->frame_buffer;
> > -	pfb->base_y.va = vb2_plane_vaddr(dst_buf, 0);
> > +	if (!ctx->is_svp_mode)
> > +		pfb->base_y.va = vb2_plane_vaddr(dst_buf, 0);
> >  	pfb->base_y.dma_addr = vb2_dma_contig_plane_dma_addr(dst_buf,
> > 0);
> >  	pfb->base_y.size = ctx->q_data[MTK_Q_DATA_DST].sizeimage[0];
> >  
> > -	if (ctx->q_data[MTK_Q_DATA_DST].fmt->num_planes == 2) {
> > +	if (ctx->q_data[MTK_Q_DATA_DST].fmt->num_planes == 2 && !ctx-
> > >is_svp_mode) {
> >  		pfb->base_c.va = vb2_plane_vaddr(dst_buf, 1);
> >  		pfb->base_c.dma_addr =
> >  			vb2_dma_contig_plane_dma_addr(dst_buf, 1);
> > @@ -310,16 +311,18 @@ static void mtk_vdec_worker(struct
> > work_struct *work)
> >  	mtk_v4l2_vdec_dbg(3, ctx, "[%d] (%d) id=%d, vb=%p", ctx->id,
> >  			  vb2_src->vb2_queue->type, vb2_src->index,
> > vb2_src);
> >  
> > -	bs_src->va = vb2_plane_vaddr(vb2_src, 0);
> > -	bs_src->dma_addr = vb2_dma_contig_plane_dma_addr(vb2_src, 0);
> > -	bs_src->size = (size_t)vb2_src->planes[0].bytesused;
> > +	if (!ctx->is_svp_mode) {
> > +		bs_src->va = vb2_plane_vaddr(vb2_src, 0);
> >  	if (!bs_src->va) {
> >  		v4l2_m2m_job_finish(dev->m2m_dev_dec, ctx->m2m_ctx);
> >  		mtk_v4l2_vdec_err(ctx, "[%d] id=%d source buffer is
> > NULL", ctx->id,
> >  				  vb2_src->index);
> >  		return;
> > +		}
> >  	}
> >  
> > +	bs_src->dma_addr = vb2_dma_contig_plane_dma_addr(vb2_src, 0);
> > +	bs_src->size = (size_t)vb2_src->planes[0].bytesused;
> >  	mtk_v4l2_vdec_dbg(3, ctx, "[%d] Bitstream VA=%p DMA=%pad
> > Size=%zx vb=%p",
> >  			  ctx->id, bs_src->va, &bs_src->dma_addr,
> > bs_src->size, vb2_src);
> >  	/* Apply request controls. */
> > diff --git
> > a/drivers/media/platform/mediatek/vcodec/decoder/vdec/vdec_h264_req
> > _common.c
> > b/drivers/media/platform/mediatek/vcodec/decoder/vdec/vdec_h264_req
> > _common.c
> > index 5ca20d75dc8e..838f0eeea6e2 100644
> > ---
> > a/drivers/media/platform/mediatek/vcodec/decoder/vdec/vdec_h264_req
> > _common.c
> > +++
> > b/drivers/media/platform/mediatek/vcodec/decoder/vdec/vdec_h264_req
> > _common.c
> > @@ -81,13 +81,15 @@ void mtk_vdec_h264_fill_dpb_info(struct
> > mtk_vcodec_dec_ctx *ctx,
> >  
> >  		h264_dpb_info[index].y_dma_addr =
> >  			vb2_dma_contig_plane_dma_addr(vb, 0);
> > -		if (ctx->q_data[MTK_Q_DATA_DST].fmt->num_planes == 2)
> > -			h264_dpb_info[index].c_dma_addr =
> > -				vb2_dma_contig_plane_dma_addr(vb, 1);
> > -		else
> > -			h264_dpb_info[index].c_dma_addr =
> > -				h264_dpb_info[index].y_dma_addr +
> > -				ctx->picinfo.fb_sz[0];
> > +		if (!ctx->is_svp_mode) {
> > +			if (ctx->q_data[MTK_Q_DATA_DST].fmt->num_planes 
> > == 2)
> > +				h264_dpb_info[index].c_dma_addr =
> > +					vb2_dma_contig_plane_dma_addr(v
> > b, 1);
> > +			else
> > +				h264_dpb_info[index].c_dma_addr =
> > +					h264_dpb_info[index].y_dma_addr
> > +
> > +					ctx->picinfo.fb_sz[0];
> > +		}
> >  	}
> >  }
> >  
> > diff --git
> > a/drivers/media/platform/mediatek/vcodec/decoder/vdec_drv_if.c
> > b/drivers/media/platform/mediatek/vcodec/decoder/vdec_drv_if.c
> > index d0b459b1603f..c7d33e540a13 100644
> > --- a/drivers/media/platform/mediatek/vcodec/decoder/vdec_drv_if.c
> > +++ b/drivers/media/platform/mediatek/vcodec/decoder/vdec_drv_if.c
> > @@ -73,14 +73,14 @@ int vdec_if_decode(struct mtk_vcodec_dec_ctx
> > *ctx, struct mtk_vcodec_mem *bs,
> >  {
> >  	int ret = 0;
> >  
> > -	if (bs) {
> > +	if (bs && !ctx->is_svp_mode) {
> >  		if ((bs->dma_addr & 63) != 0) {
> >  			mtk_v4l2_vdec_err(ctx, "bs dma_addr should 64
> > byte align");
> >  			return -EINVAL;
> >  		}
> >  	}
> >  
> > -	if (fb) {
> > +	if (fb && !ctx->is_svp_mode) {
> >  		if (((fb->base_y.dma_addr & 511) != 0) ||
> >  		    ((fb->base_c.dma_addr & 511) != 0)) {
> >  			mtk_v4l2_vdec_err(ctx, "frame buffer dma_addr
> > should 512 byte align");
> 
>