linux-kernel - Re: [PATCH v3 2/2] venus: venc: Add support for intra-refresh mode

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Date:   Mon, 14 Mar 2022 09:13:20 +0100
From:   Hans Verkuil <hverkuil-cisco@...all.nl>
To:     quic_dikshita@...cinc.com, linux-media@...r.kernel.org,
        linux-kernel@...r.kernel.org
Cc:     linux-arm-msm@...r.kernel.org, ezequiel@...labora.com,
        stanimir.varbanov@...aro.org, quic_vgarodia@...cinc.com,
        quic_majja@...cinc.com, quic_jdas@...cinc.com
Subject: Re: [PATCH v3 2/2] venus: venc: Add support for intra-refresh mode



On 3/14/22 09:00, quic_dikshita@...cinc.com wrote:
> From: Dikshita Agarwal <quic_dikshita@...cinc.com>
> 
> Add support for intra-refresh type v4l2 control.
> 
> Signed-off-by: Dikshita Agarwal <quic_dikshita@...cinc.com>
> ---
>  drivers/media/platform/qcom/venus/core.h       | 1 +
>  drivers/media/platform/qcom/venus/venc.c       | 4 +++-
>  drivers/media/platform/qcom/venus/venc_ctrls.c | 8 ++++++++
>  3 files changed, 12 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/media/platform/qcom/venus/core.h b/drivers/media/platform/qcom/venus/core.h
> index 7c3bac0..814ec3c 100644
> --- a/drivers/media/platform/qcom/venus/core.h
> +++ b/drivers/media/platform/qcom/venus/core.h
> @@ -260,6 +260,7 @@ struct venc_controls {
>  
>  	u32 header_mode;
>  	bool aud_enable;
> +	u32 intra_refresh_mode;

To be consistent with the control name rename this field to intra_refresh_type.

>  	u32 intra_refresh_period;
>  
>  	struct {
> diff --git a/drivers/media/platform/qcom/venus/venc.c b/drivers/media/platform/qcom/venus/venc.c
> index 84bafc3..3b38624 100644
> --- a/drivers/media/platform/qcom/venus/venc.c
> +++ b/drivers/media/platform/qcom/venus/venc.c
> @@ -893,8 +893,10 @@ static int venc_set_properties(struct venus_inst *inst)
>  				mbs++;
>  			mbs /= ctr->intra_refresh_period;
>  
> -			intra_refresh.mode = HFI_INTRA_REFRESH_RANDOM;
>  			intra_refresh.cir_mbs = mbs;
> +			if (ctr->intra_refresh_mode ==
> +			    V4L2_CID_MPEG_VIDEO_INTRA_REFRESH_PERIOD_TYPE_RANDOM)
> +				intra_refresh.mode = HFI_INTRA_REFRESH_RANDOM;
>  		}
>  
>  		ptype = HFI_PROPERTY_PARAM_VENC_INTRA_REFRESH;
> diff --git a/drivers/media/platform/qcom/venus/venc_ctrls.c b/drivers/media/platform/qcom/venus/venc_ctrls.c
> index 1ada42d..29dbe3b4 100644
> --- a/drivers/media/platform/qcom/venus/venc_ctrls.c
> +++ b/drivers/media/platform/qcom/venus/venc_ctrls.c
> @@ -316,6 +316,9 @@ static int venc_op_s_ctrl(struct v4l2_ctrl *ctrl)
>  	case V4L2_CID_COLORIMETRY_HDR10_MASTERING_DISPLAY:
>  		ctr->mastering = *ctrl->p_new.p_hdr10_mastering;
>  		break;
> +	case V4L2_CID_MPEG_VIDEO_INTRA_REFRESH_PERIOD_TYPE:
> +		ctr->intra_refresh_mode = ctrl->val;
> +		break;
>  	case V4L2_CID_MPEG_VIDEO_INTRA_REFRESH_PERIOD:
>  		ctr->intra_refresh_period = ctrl->val;
>  		break;
> @@ -582,6 +585,11 @@ int venc_ctrl_init(struct venus_inst *inst)
>  				   V4L2_CID_COLORIMETRY_HDR10_MASTERING_DISPLAY,
>  				   v4l2_ctrl_ptr_create(NULL));
>  
> +	v4l2_ctrl_new_std_menu(&inst->ctrl_handler, &venc_ctrl_ops,
> +			       V4L2_CID_MPEG_VIDEO_INTRA_REFRESH_PERIOD_TYPE,
> +			       V4L2_CID_MPEG_VIDEO_INTRA_REFRESH_PERIOD_TYPE_RANDOM,
> +			       0, V4L2_CID_MPEG_VIDEO_INTRA_REFRESH_PERIOD_TYPE_RANDOM);

The range consists only of RANDOM, is that intended? Why add this control if
there is no choice?

Regards,

	Hans

> +
>  	v4l2_ctrl_new_std(&inst->ctrl_handler, &venc_ctrl_ops,
>  			  V4L2_CID_MPEG_VIDEO_INTRA_REFRESH_PERIOD, 0,
>  			  ((4096 * 2304) >> 8), 1, 0);