linux-kernel - Re: [PATCH 2/2] media: cedrus: Add support for the D1 variant

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Message-ID: <5766379.lOV4Wx5bFT@kista>
Date:   Fri, 19 Nov 2021 16:53:41 +0100
From:   Jernej Škrabec <jernej.skrabec@...il.com>
To:     Paul Kocialkowski <paul.kocialkowski@...tlin.com>,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        linux-media@...r.kernel.org, Samuel Holland <samuel@...lland.org>
Cc:     Rob Herring <robh+dt@...nel.org>, devicetree@...r.kernel.org,
        Maxime Ripard <mripard@...nel.org>,
        Chen-Yu Tsai <wens@...e.org>, linux-sunxi@...ts.linux.dev,
        Samuel Holland <samuel@...lland.org>,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        linux-staging@...ts.linux.dev
Subject: Re: [PATCH 2/2] media: cedrus: Add support for the D1 variant

Hi Samuel!

Dne petek, 19. november 2021 ob 04:15:18 CET je Samuel Holland napisal(a):
> D1 has a unique variant of the video engine, which appears to drop the
> VP8 support found on most earlier variants.
> 
> Signed-off-by: Samuel Holland <samuel@...lland.org>
> ---
> 
>  drivers/staging/media/sunxi/cedrus/cedrus.c | 12 ++++++++++++
>  1 file changed, 12 insertions(+)
> 
> diff --git a/drivers/staging/media/sunxi/cedrus/cedrus.c b/drivers/staging/
media/sunxi/cedrus/cedrus.c
> index c76fc97d97a0..4a4b714b0f26 100644
> --- a/drivers/staging/media/sunxi/cedrus/cedrus.c
> +++ b/drivers/staging/media/sunxi/cedrus/cedrus.c
> @@ -580,6 +580,14 @@ static const struct cedrus_variant 
sun8i_r40_cedrus_variant = {
>  	.mod_rate	= 297000000,
>  };
>  
> +static const struct cedrus_variant sun20i_d1_cedrus_variant = {
> +	.capabilities	= CEDRUS_CAPABILITY_UNTILED |
> +			  CEDRUS_CAPABILITY_MPEG2_DEC |
> +			  CEDRUS_CAPABILITY_H264_DEC |
> +			  CEDRUS_CAPABILITY_H265_DEC,

Did you check if VP8 really doesn't work? It would be strange because it 
shares decoding blocks with H264 and VP8 is present in (almost) all SoCs.

Best regards,
Jernej

> +	.mod_rate	= 432000000,
> +};
> +
>  static const struct cedrus_variant sun50i_a64_cedrus_variant = {
>  	.capabilities	= CEDRUS_CAPABILITY_UNTILED |
>  			  CEDRUS_CAPABILITY_MPEG2_DEC |
> @@ -637,6 +645,10 @@ static const struct of_device_id cedrus_dt_match[] = {
>  		.compatible = "allwinner,sun8i-r40-video-engine",
>  		.data = &sun8i_r40_cedrus_variant,
>  	},
> +	{
> +		.compatible = "allwinner,sun20i-d1-video-engine",
> +		.data = &sun20i_d1_cedrus_variant,
> +	},
>  	{
>  		.compatible = "allwinner,sun50i-a64-video-engine",
>  		.data = &sun50i_a64_cedrus_variant,
> -- 
> 2.32.0
> 
>