linux-kernel - Re: [PATCH] drm/mediatek: Fix wrong dither settings

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Message-ID: <10a9c90d-aacf-5283-526d-b3ae42b86ea3@gmail.com>
Date:   Thu, 8 Sep 2022 16:18:38 +0200
From:   Matthias Brugger <matthias.bgg@...il.com>
To:     Allen-KH Cheng <allen-kh.cheng@...iatek.com>,
        Chun-Kuang Hu <chunkuang.hu@...nel.org>,
        Philipp Zabel <p.zabel@...gutronix.de>,
        David Airlie <airlied@...ux.ie>,
        Daniel Vetter <daniel@...ll.ch>
Cc:     dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org,
        Project_Global_Chrome_Upstream_Group@...iatek.com,
        devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-mediatek@...ts.infradead.org,
        Yongqiang Niu <yongqiang.niu@...iatek.com>
Subject: Re: [PATCH] drm/mediatek: Fix wrong dither settings



On 08/09/2022 16:12, Allen-KH Cheng wrote:
> The width and height arguments in the cmdq packet for mtk_dither_config()
> are inverted. We fix the incorrect width and height for dither settings
> in mtk_dither_config().
> 
> Fixes: 73d3724745db ("drm/mediatek: Adjust to the alphabetic order for mediatek-drm")
> Co-developed-by: Yongqiang Niu <yongqiang.niu@...iatek.com>
> Signed-off-by: Yongqiang Niu <yongqiang.niu@...iatek.com>
> Signed-off-by: Allen-KH Cheng <allen-kh.cheng@...iatek.com>

Reviewed-by: Matthias Brugger <matthias.bgg@...il.com>

> ---
>   drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.c | 2 +-
>   1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.c b/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.c
> index 2d72cc5ddaba..6b6d5335c834 100644
> --- a/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.c
> +++ b/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.c
> @@ -157,7 +157,7 @@ static void mtk_dither_config(struct device *dev, unsigned int w,
>   {
>   	struct mtk_ddp_comp_dev *priv = dev_get_drvdata(dev);
>   
> -	mtk_ddp_write(cmdq_pkt, h << 16 | w, &priv->cmdq_reg, priv->regs, DISP_REG_DITHER_SIZE);
> +	mtk_ddp_write(cmdq_pkt, w << 16 | h, &priv->cmdq_reg, priv->regs, DISP_REG_DITHER_SIZE);
>   	mtk_ddp_write(cmdq_pkt, DITHER_RELAY_MODE, &priv->cmdq_reg, priv->regs,
>   		      DISP_REG_DITHER_CFG);
>   	mtk_dither_set_common(priv->regs, &priv->cmdq_reg, bpc, DISP_REG_DITHER_CFG,