linux-kernel - Re: [PATCH 4/7] media: cedrus: Remove dst

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Date:   Mon, 12 Aug 2019 10:42:44 -0300
From:   Ezequiel Garcia <ezequiel@...labora.com>
To:     Jernej Skrabec <jernej.skrabec@...l.net>,
        paul.kocialkowski@...tlin.com, maxime.ripard@...tlin.com
Cc:     wens@...e.org, mchehab@...nel.org, gregkh@...uxfoundation.org,
        linux-media@...r.kernel.org, devel@...verdev.osuosl.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 4/7] media: cedrus: Remove dst_bufs from context

On Thu, 2019-05-30 at 23:15 +0200, Jernej Skrabec wrote:
> This array is just duplicated capture buffer queue. Remove it and adjust
> code to look into capture buffer queue instead.
> 
> Signed-off-by: Jernej Skrabec <jernej.skrabec@...l.net>
> ---
>  drivers/staging/media/sunxi/cedrus/cedrus.h   |  4 +---
>  .../staging/media/sunxi/cedrus/cedrus_h264.c  |  4 ++--
>  .../staging/media/sunxi/cedrus/cedrus_video.c | 22 -------------------
>  3 files changed, 3 insertions(+), 27 deletions(-)
> 
> diff --git a/drivers/staging/media/sunxi/cedrus/cedrus.h b/drivers/staging/media/sunxi/cedrus/cedrus.h
> index 3f476d0fd981..d8e6777e5e27 100644
> --- a/drivers/staging/media/sunxi/cedrus/cedrus.h
> +++ b/drivers/staging/media/sunxi/cedrus/cedrus.h
> @@ -100,8 +100,6 @@ struct cedrus_ctx {
>  	struct v4l2_ctrl_handler	hdl;
>  	struct v4l2_ctrl		**ctrls;
>  
> -	struct vb2_buffer		*dst_bufs[VIDEO_MAX_FRAME];
> -
>  	union {
>  		struct {
>  			void		*mv_col_buf;
> @@ -187,7 +185,7 @@ static inline dma_addr_t cedrus_dst_buf_addr(struct cedrus_ctx *ctx,
>  	if (index < 0)
>  		return 0;
>  
> -	buf = ctx->dst_bufs[index];
> +	buf = ctx->fh.m2m_ctx->cap_q_ctx.q.bufs[index];

I think you can use v4l2_m2m_get_dst_vq() to access the queue,
and vb2_get_buffer() to access buffers in a vb2 queue.

>  	return buf ? cedrus_buf_addr(buf, &ctx->dst_fmt, plane) : 0;
>  }
>  
> diff --git a/drivers/staging/media/sunxi/cedrus/cedrus_h264.c b/drivers/staging/media/sunxi/cedrus/cedrus_h264.c
> index d0ee3f90ff46..b2290f98d81a 100644
> --- a/drivers/staging/media/sunxi/cedrus/cedrus_h264.c
> +++ b/drivers/staging/media/sunxi/cedrus/cedrus_h264.c
> @@ -119,7 +119,7 @@ static void cedrus_write_frame_list(struct cedrus_ctx *ctx,
>  		if (buf_idx < 0)
>  			continue;
>  
> -		cedrus_buf = vb2_to_cedrus_buffer(ctx->dst_bufs[buf_idx]);
> +		cedrus_buf = vb2_to_cedrus_buffer(cap_q->bufs[buf_idx]);

Ditto about vb2_get_buffer.

>  		position = cedrus_buf->codec.h264.position;
>  		used_dpbs |= BIT(position);
>  
> @@ -194,7 +194,7 @@ static void _cedrus_write_ref_list(struct cedrus_ctx *ctx,
>  		if (buf_idx < 0)
>  			continue;
>  
> -		ref_buf = to_vb2_v4l2_buffer(ctx->dst_bufs[buf_idx]);
> +		ref_buf = to_vb2_v4l2_buffer(cap_q->bufs[buf_idx]);

Ditto about vb2_get_buffer.

With those changes:

Reviewed-by: Ezequiel Garcia <ezequiel@...labora.com>

Thanks,
Ezequiel