linux-kernel - Re: [PATCH v1 1/2] drm/komeda: Update HW up-sampling on D71

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Date:   Mon, 20 May 2019 05:49:46 +0000
From:   "james qian wang (Arm Technology China)" <james.qian.wang@....com>
To:     "Lowry Li (Arm Technology China)" <Lowry.Li@....com>
CC:     Liviu Dudau <Liviu.Dudau@....com>,
        "maarten.lankhorst@...ux.intel.com" 
        <maarten.lankhorst@...ux.intel.com>,
        "seanpaul@...omium.org" <seanpaul@...omium.org>,
        "airlied@...ux.ie" <airlied@...ux.ie>,
        Brian Starkey <Brian.Starkey@....com>,
        "Julien Yin (Arm Technology China)" <Julien.Yin@....com>,
        "Jonathan Chai (Arm Technology China)" <Jonathan.Chai@....com>,
        Ayan Halder <Ayan.Halder@....com>,
        "dri-devel@...ts.freedesktop.org" <dri-devel@...ts.freedesktop.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        nd <nd@....com>
Subject: Re: [PATCH v1 1/2] drm/komeda: Update HW up-sampling on D71

On Thu, May 16, 2019 at 02:13:09PM +0800, Lowry Li (Arm Technology China) wrote:
> Updates HW up-sampling method according to the format type.
> 
> Signed-off-by: Lowry Li (Arm Technology China) <lowry.li@....com>
> ---
>  .../gpu/drm/arm/display/komeda/d71/d71_component.c | 29 ++++++++++++++++++++++
>  1 file changed, 29 insertions(+)
> 
> diff --git a/drivers/gpu/drm/arm/display/komeda/d71/d71_component.c b/drivers/gpu/drm/arm/display/komeda/d71/d71_component.c
> index f8846c6..dfc70f5 100644
> --- a/drivers/gpu/drm/arm/display/komeda/d71/d71_component.c
> +++ b/drivers/gpu/drm/arm/display/komeda/d71/d71_component.c
> @@ -212,6 +212,35 @@ static void d71_layer_update(struct komeda_component *c,
>  		malidp_write32(reg, BLK_P1_PTR_HIGH, upper_32_bits(addr));
>  	}
>  
> +	if (fb->format->is_yuv) {
> +		u32 upsampling = 0;
> +
> +		switch (kfb->format_caps->fourcc) {
> +		case DRM_FORMAT_YUYV:
> +			upsampling = fb->modifier ? LR_CHI422_BILINEAR :
> +				     LR_CHI422_REPLICATION;
> +			break;
> +		case DRM_FORMAT_UYVY:
> +			upsampling = LR_CHI422_REPLICATION;
> +			break;
> +		case DRM_FORMAT_NV12:
> +		case DRM_FORMAT_YUV420_8BIT:
> +		case DRM_FORMAT_YUV420_10BIT:
> +		case DRM_FORMAT_YUV420:
> +		case DRM_FORMAT_P010:
> +		/* these fmt support MPGE/JPEG both, here perfer JPEG*/
> +			upsampling = LR_CHI420_JPEG;
> +			break;
> +		case DRM_FORMAT_X0L2:
> +			upsampling = LR_CHI420_JPEG;
> +			break;
> +		default:
> +			break;
> +		}
> +
> +		malidp_write32(reg, LAYER_R_CONTROL, upsampling);
> +	}
> +
>  	malidp_write32(reg, LAYER_FMT, kfb->format_caps->hw_id);
>  	malidp_write32(reg, BLK_IN_SIZE, HV_SIZE(st->hsize, st->vsize));
>  
> -- 
> 1.9.1
> 
 
Reviewed-by: James Qian Wang (Arm Technology China) <james.qian.wang@....com>

Looks good to me.

Thank you