linux-kernel - Re: [PATCH 11/20] media: s5p-mfc: Add support for UHD encoding.

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Date:   Wed, 18 May 2022 11:50:43 +0200
From:   Hans Verkuil <hverkuil-cisco@...all.nl>
To:     Smitha T Murthy <smitha.t@...sung.com>,
        linux-arm-kernel@...ts.infradead.org, linux-media@...r.kernel.org,
        linux-kernel@...r.kernel.org, devicetree@...r.kernel.org
Cc:     m.szyprowski@...sung.com, andrzej.hajda@...el.com,
        mchehab@...nel.org, ezequiel@...guardiasur.com.ar,
        jernej.skrabec@...il.com, benjamin.gaignard@...labora.com,
        stanimir.varbanov@...aro.org, dillon.minfei@...il.com,
        david.plowman@...pberrypi.com, mark.rutland@....com,
        robh+dt@...nel.org, krzk+dt@...nel.org, andi@...zian.org,
        alim.akhtar@...sung.com, aswani.reddy@...sung.com,
        pankaj.dubey@...sung.com, linux-fsd@...la.com
Subject: Re: [PATCH 11/20] media: s5p-mfc: Add support for UHD encoding.

Hi Smitha,

On 5/17/22 14:55, Smitha T Murthy wrote:
> MFC driver had restriction on max resolution of 1080p,
> updated it for UHD. Added corresponding support to
> set recommended profile and level for H264 in UHD scenario.
> 
> Cc: linux-fsd@...la.com
> Signed-off-by: Smitha T Murthy <smitha.t@...sung.com>
> ---
>  drivers/media/platform/samsung/s5p-mfc/s5p_mfc_enc.c |  4 ++--
>  .../media/platform/samsung/s5p-mfc/s5p_mfc_opr_v6.c  | 12 ++++++++++++
>  2 files changed, 14 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/media/platform/samsung/s5p-mfc/s5p_mfc_enc.c b/drivers/media/platform/samsung/s5p-mfc/s5p_mfc_enc.c
> index 456edcfebba7..9b624f17e32b 100644
> --- a/drivers/media/platform/samsung/s5p-mfc/s5p_mfc_enc.c
> +++ b/drivers/media/platform/samsung/s5p-mfc/s5p_mfc_enc.c
> @@ -1630,8 +1630,8 @@ static int vidioc_try_fmt(struct file *file, void *priv, struct v4l2_format *f)
>  			return -EINVAL;
>  		}
>  
> -		v4l_bound_align_image(&pix_fmt_mp->width, 8, 1920, 1,
> -			&pix_fmt_mp->height, 4, 1080, 1, 0);
> +		v4l_bound_align_image(&pix_fmt_mp->width, 8, 3840, 1,
> +			&pix_fmt_mp->height, 4, 2160, 1, 0);

Is this supported by older MFC versions as well? This seems to enable UHD support
for all MFC versions.

Regards,

	Hans

>  	} else {
>  		mfc_err("invalid buf type\n");
>  		return -EINVAL;
> diff --git a/drivers/media/platform/samsung/s5p-mfc/s5p_mfc_opr_v6.c b/drivers/media/platform/samsung/s5p-mfc/s5p_mfc_opr_v6.c
> index 7db7945ea80f..2b6d6259a209 100644
> --- a/drivers/media/platform/samsung/s5p-mfc/s5p_mfc_opr_v6.c
> +++ b/drivers/media/platform/samsung/s5p-mfc/s5p_mfc_opr_v6.c
> @@ -1127,6 +1127,18 @@ static int s5p_mfc_set_enc_params_h264(struct s5p_mfc_ctx *ctx)
>  	reg |= ((p->num_b_frame & 0x3) << 16);
>  	writel(reg, mfc_regs->e_gop_config);
>  
> +	/* UHD encoding case */
> +	if ((ctx->img_width == 3840) && ctx->img_height == 2160) {
> +		if (p_h264->level < 51) {
> +			mfc_debug(2, "Set Level 5.1 for UHD\n");
> +			p_h264->level = 51;
> +		}
> +		if (p_h264->profile != 0x2) {
> +			mfc_debug(2, "Set High profile for UHD\n");
> +			p_h264->profile = 0x2;
> +		}
> +	}
> +
>  	/* profile & level */
>  	reg = 0;
>  	/** level */