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Date:   Thu, 14 Oct 2021 19:42:41 +0200
From:   Jernej Škrabec <jernej.skrabec@...il.com>
To:     linux-media@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-kernel@...r.kernel.org, linux-rockchip@...ts.infradead.org,
        linux-staging@...ts.linux.dev,
        Andrzej Pietrasiewicz <andrzej.p@...labora.com>
Cc:     Andrzej Pietrasiewicz <andrzej.p@...labora.com>,
        Benjamin Gaignard <benjamin.gaignard@...labora.com>,
        Boris Brezillon <boris.brezillon@...labora.com>,
        Ezequiel Garcia <ezequiel@...guardiasur.com.ar>,
        Fabio Estevam <festevam@...il.com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Hans Verkuil <hverkuil-cisco@...all.nl>,
        Heiko Stuebner <heiko@...ech.de>,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        Nicolas Dufresne <nicolas.dufresne@...labora.com>,
        NXP Linux Team <linux-imx@....com>,
        Pengutronix Kernel Team <kernel@...gutronix.de>,
        Philipp Zabel <p.zabel@...gutronix.de>,
        Sascha Hauer <s.hauer@...gutronix.de>,
        Shawn Guo <shawnguo@...nel.org>, kernel@...labora.com,
        Ezequiel Garcia <ezequiel@...labora.com>
Subject: Re: [PATCH v7 11/11] media: hantro: Support NV12 on the G2 core

Hi Andrzej!

Dne sreda, 29. september 2021 ob 18:04:39 CEST je Andrzej Pietrasiewicz 
napisal(a):
> The G2 decoder block produces NV12 4x4 tiled format (NV12_4L4).
> Enable the G2 post-processor block, in order to produce regular NV12.
> 
> The logic in hantro_postproc.c is leveraged to take care of allocating
> the extra buffers and configure the post-processor, which is
> significantly simpler than the one on the G1.

Quick summary of discussion on LibreELEC Slack:
When using NV12 format on Allwinner H6 variant of G2 (needs some driver 
changes), I get frames out of order. If I use native NV12 tiled format, frames 
are ordered correctly.

Currently I'm not sure if this is issue with my changes or is this general 
issue.

I would be grateful if anyone can test frame order with and without 
postprocessing enabled on imx8. Take some dynamic video with a lot of short 
scenes. It's pretty obvious when frames are out of order.

However, given that frames themself are correctly decoded and without 
postprocessing in right order, that shouldn't block merging previous patches. 
I tried few different videos and frames were all decoded correctly.

Best regards,
Jernej

> 
> Signed-off-by: Ezequiel Garcia <ezequiel@...labora.com>
> Signed-off-by: Andrzej Pietrasiewicz <andrzej.p@...labora.com>
> ---
>  .../staging/media/hantro/hantro_g2_vp9_dec.c  |  6 ++--
>  drivers/staging/media/hantro/hantro_hw.h      |  1 +
>  .../staging/media/hantro/hantro_postproc.c    | 31 +++++++++++++++++++
>  drivers/staging/media/hantro/imx8m_vpu_hw.c   | 11 +++++++
>  4 files changed, 46 insertions(+), 3 deletions(-)
> 
> diff --git a/drivers/staging/media/hantro/hantro_g2_vp9_dec.c b/drivers/
staging/media/hantro/hantro_g2_vp9_dec.c
> index 7f827b9f0133..1a26be72c878 100644
> --- a/drivers/staging/media/hantro/hantro_g2_vp9_dec.c
> +++ b/drivers/staging/media/hantro/hantro_g2_vp9_dec.c
> @@ -152,7 +152,7 @@ static void config_output(struct hantro_ctx *ctx,
>  	hantro_reg_write(ctx->dev, &g2_out_dis, 0);
>  	hantro_reg_write(ctx->dev, &g2_output_format, 0);
>  
> -	luma_addr = vb2_dma_contig_plane_dma_addr(&dst->base.vb.vb2_buf, 
0);
> +	luma_addr = hantro_get_dec_buf_addr(ctx, &dst->base.vb.vb2_buf);
>  	hantro_write_addr(ctx->dev, G2_OUT_LUMA_ADDR, luma_addr);
>  
>  	chroma_addr = luma_addr + chroma_offset(ctx, dec_params);
> @@ -191,7 +191,7 @@ static void config_ref(struct hantro_ctx *ctx,
>  	hantro_reg_write(ctx->dev, &ref_reg->hor_scale, (refw << 14) / 
dst->vp9.width);
>  	hantro_reg_write(ctx->dev, &ref_reg->ver_scale, (refh << 14) / 
dst->vp9.height);
>  
> -	luma_addr = vb2_dma_contig_plane_dma_addr(&buf->base.vb.vb2_buf, 
0);
> +	luma_addr = hantro_get_dec_buf_addr(ctx, &buf->base.vb.vb2_buf);
>  	hantro_write_addr(ctx->dev, ref_reg->y_base, luma_addr);
>  
>  	chroma_addr = luma_addr + chroma_offset(ctx, dec_params);
> @@ -236,7 +236,7 @@ static void config_ref_registers(struct hantro_ctx *ctx,
>  	config_ref(ctx, dst, &ref_regs[1], dec_params, dec_params-
>golden_frame_ts);
>  	config_ref(ctx, dst, &ref_regs[2], dec_params, dec_params-
>alt_frame_ts);
>  
> -	mv_addr = vb2_dma_contig_plane_dma_addr(&mv_ref->base.vb.vb2_buf, 
0) +
> +	mv_addr = hantro_get_dec_buf_addr(ctx, &mv_ref->base.vb.vb2_buf) +
>  		  mv_offset(ctx, dec_params);
>  	hantro_write_addr(ctx->dev, G2_REF_MV_ADDR(0), mv_addr);
>  
> diff --git a/drivers/staging/media/hantro/hantro_hw.h b/drivers/staging/
media/hantro/hantro_hw.h
> index 2961d399fd60..3d4a5dc1e6d5 100644
> --- a/drivers/staging/media/hantro/hantro_hw.h
> +++ b/drivers/staging/media/hantro/hantro_hw.h
> @@ -274,6 +274,7 @@ extern const struct hantro_variant rk3399_vpu_variant;
>  extern const struct hantro_variant sama5d4_vdec_variant;
>  
>  extern const struct hantro_postproc_ops hantro_g1_postproc_ops;
> +extern const struct hantro_postproc_ops hantro_g2_postproc_ops;
>  
>  extern const u32 hantro_vp8_dec_mc_filter[8][6];
>  
> diff --git a/drivers/staging/media/hantro/hantro_postproc.c b/drivers/
staging/media/hantro/hantro_postproc.c
> index 4549aec08feb..79a66d001738 100644
> --- a/drivers/staging/media/hantro/hantro_postproc.c
> +++ b/drivers/staging/media/hantro/hantro_postproc.c
> @@ -11,6 +11,7 @@
>  #include "hantro.h"
>  #include "hantro_hw.h"
>  #include "hantro_g1_regs.h"
> +#include "hantro_g2_regs.h"
>  
>  #define HANTRO_PP_REG_WRITE(vpu, reg_name, val) \
>  { \
> @@ -99,6 +100,21 @@ static void hantro_postproc_g1_enable(struct hantro_ctx 
*ctx)
>  	HANTRO_PP_REG_WRITE(vpu, display_width, ctx->dst_fmt.width);
>  }
>  
> +static void hantro_postproc_g2_enable(struct hantro_ctx *ctx)
> +{
> +	struct hantro_dev *vpu = ctx->dev;
> +	struct vb2_v4l2_buffer *dst_buf;
> +	size_t chroma_offset = ctx->dst_fmt.width * ctx->dst_fmt.height;
> +	dma_addr_t dst_dma;
> +
> +	dst_buf = hantro_get_dst_buf(ctx);
> +	dst_dma = vb2_dma_contig_plane_dma_addr(&dst_buf->vb2_buf, 0);
> +
> +	hantro_write_addr(vpu, G2_RS_OUT_LUMA_ADDR, dst_dma);
> +	hantro_write_addr(vpu, G2_RS_OUT_CHROMA_ADDR, dst_dma + 
chroma_offset);
> +	hantro_reg_write(vpu, &g2_out_rs_e, 1);
> +}
> +
>  void hantro_postproc_free(struct hantro_ctx *ctx)
>  {
>  	struct hantro_dev *vpu = ctx->dev;
> @@ -127,6 +143,9 @@ int hantro_postproc_alloc(struct hantro_ctx *ctx)
>  	if (ctx->vpu_src_fmt->fourcc == V4L2_PIX_FMT_H264_SLICE)
>  		buf_size += hantro_h264_mv_size(ctx->dst_fmt.width,
>  						ctx-
>dst_fmt.height);
> +	else if (ctx->vpu_src_fmt->fourcc == V4L2_PIX_FMT_VP9_FRAME)
> +		buf_size += hantro_vp9_mv_size(ctx->dst_fmt.width,
> +					       ctx-
>dst_fmt.height);
>  
>  	for (i = 0; i < num_buffers; ++i) {
>  		struct hantro_aux_buf *priv = &ctx->postproc.dec_q[i];
> @@ -152,6 +171,13 @@ static void hantro_postproc_g1_disable(struct 
hantro_ctx *ctx)
>  	HANTRO_PP_REG_WRITE_S(vpu, pipeline_en, 0x0);
>  }
>  
> +static void hantro_postproc_g2_disable(struct hantro_ctx *ctx)
> +{
> +	struct hantro_dev *vpu = ctx->dev;
> +
> +	hantro_reg_write(vpu, &g2_out_rs_e, 0);
> +}
> +
>  void hantro_postproc_disable(struct hantro_ctx *ctx)
>  {
>  	struct hantro_dev *vpu = ctx->dev;
> @@ -172,3 +198,8 @@ const struct hantro_postproc_ops hantro_g1_postproc_ops 
= {
>  	.enable = hantro_postproc_g1_enable,
>  	.disable = hantro_postproc_g1_disable,
>  };
> +
> +const struct hantro_postproc_ops hantro_g2_postproc_ops = {
> +	.enable = hantro_postproc_g2_enable,
> +	.disable = hantro_postproc_g2_disable,
> +};
> diff --git a/drivers/staging/media/hantro/imx8m_vpu_hw.c b/drivers/staging/
media/hantro/imx8m_vpu_hw.c
> index 455a107ffb02..1a43f6fceef9 100644
> --- a/drivers/staging/media/hantro/imx8m_vpu_hw.c
> +++ b/drivers/staging/media/hantro/imx8m_vpu_hw.c
> @@ -132,6 +132,14 @@ static const struct hantro_fmt imx8m_vpu_dec_fmts[] = {
>  	},
>  };
>  
> +static const struct hantro_fmt imx8m_vpu_g2_postproc_fmts[] = {
> +	{
> +		.fourcc = V4L2_PIX_FMT_NV12,
> +		.codec_mode = HANTRO_MODE_NONE,
> +		.postprocessed = true,
> +	},
> +};
> +
>  static const struct hantro_fmt imx8m_vpu_g2_dec_fmts[] = {
>  	{
>  		.fourcc = V4L2_PIX_FMT_NV12_4L4,
> @@ -301,6 +309,9 @@ const struct hantro_variant imx8mq_vpu_g2_variant = {
>  	.dec_offset = 0x0,
>  	.dec_fmts = imx8m_vpu_g2_dec_fmts,
>  	.num_dec_fmts = ARRAY_SIZE(imx8m_vpu_g2_dec_fmts),
> +	.postproc_fmts = imx8m_vpu_g2_postproc_fmts,
> +	.num_postproc_fmts = ARRAY_SIZE(imx8m_vpu_g2_postproc_fmts),
> +	.postproc_ops = &hantro_g2_postproc_ops,
>  	.codec = HANTRO_HEVC_DECODER | HANTRO_VP9_DECODER,
>  	.codec_ops = imx8mq_vpu_g2_codec_ops,
>  	.init = imx8mq_vpu_hw_init,
> -- 
> 2.17.1
> 
> 


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