linux-kernel - Re: [PATCH v7 08/11] drm/mediatek: dp: Move PHY registration to new function

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Message-ID: <1533c98764b34896fc959bb03b748830f97437d0.camel@mediatek.com>
Date:   Thu, 27 Jul 2023 03:27:03 +0000
From:   CK Hu (胡俊光) <ck.hu@...iatek.com>
To:     "angelogioacchino.delregno@...labora.com" 
        <angelogioacchino.delregno@...labora.com>,
        "chunkuang.hu@...nel.org" <chunkuang.hu@...nel.org>
CC:     "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "linux-mediatek@...ts.infradead.org" 
        <linux-mediatek@...ts.infradead.org>,
        "wenst@...omium.org" <wenst@...omium.org>,
        "kernel@...labora.com" <kernel@...labora.com>,
        "dri-devel@...ts.freedesktop.org" <dri-devel@...ts.freedesktop.org>,
        "amergnat@...libre.com" <amergnat@...libre.com>,
        "ehristev@...labora.com" <ehristev@...labora.com>,
        "linux-arm-kernel@...ts.infradead.org" 
        <linux-arm-kernel@...ts.infradead.org>,
        "matthias.bgg@...il.com" <matthias.bgg@...il.com>,
        "nfraprado@...labora.com" <nfraprado@...labora.com>
Subject: Re: [PATCH v7 08/11] drm/mediatek: dp: Move PHY registration to new
 function

Hi, Angelo:

On Tue, 2023-07-25 at 09:32 +0200, AngeloGioacchino Del Regno wrote:
> In preparation for adding support for eDP, move the PHY registration
> code to a new mtk_dp_register_phy() function for better readability.
> 
> This commit brings no functional changes.

Reviewed-by: CK Hu <ck.hu@...iatek.com>

> 
> Signed-off-by: AngeloGioacchino Del Regno <
> angelogioacchino.delregno@...labora.com>
> Tested-by: Chen-Yu Tsai <wenst@...omium.org>
> Reviewed-by: Alexandre Mergnat <amergnat@...libre.com>
> ---
>  drivers/gpu/drm/mediatek/mtk_dp.c | 43 +++++++++++++++++++--------
> ----
>  1 file changed, 26 insertions(+), 17 deletions(-)
> 
> diff --git a/drivers/gpu/drm/mediatek/mtk_dp.c
> b/drivers/gpu/drm/mediatek/mtk_dp.c
> index c1d1a882f1db..1b4219e6a00b 100644
> --- a/drivers/gpu/drm/mediatek/mtk_dp.c
> +++ b/drivers/gpu/drm/mediatek/mtk_dp.c
> @@ -2478,6 +2478,29 @@ static int mtk_dp_register_audio_driver(struct
> device *dev)
>  	return PTR_ERR_OR_ZERO(mtk_dp->audio_pdev);
>  }
>  
> +static int mtk_dp_register_phy(struct mtk_dp *mtk_dp)
> +{
> +	struct device *dev = mtk_dp->dev;
> +
> +	mtk_dp->phy_dev = platform_device_register_data(dev, "mediatek-
> dp-phy",
> +							PLATFORM_DEVID_
> AUTO,
> +							&mtk_dp->regs,
> +							sizeof(struct
> regmap *));
> +	if (IS_ERR(mtk_dp->phy_dev))
> +		return dev_err_probe(dev, PTR_ERR(mtk_dp->phy_dev),
> +				     "Failed to create device mediatek-
> dp-phy\n");
> +
> +	mtk_dp_get_calibration_data(mtk_dp);
> +
> +	mtk_dp->phy = devm_phy_get(&mtk_dp->phy_dev->dev, "dp");
> +	if (IS_ERR(mtk_dp->phy)) {
> +		platform_device_unregister(mtk_dp->phy_dev);
> +		return dev_err_probe(dev, PTR_ERR(mtk_dp->phy), "Failed
> to get phy\n");
> +	}
> +
> +	return 0;
> +}
> +
>  static int mtk_dp_probe(struct platform_device *pdev)
>  {
>  	struct mtk_dp *mtk_dp;
> @@ -2536,23 +2559,9 @@ static int mtk_dp_probe(struct platform_device
> *pdev)
>  		}
>  	}
>  
> -	mtk_dp->phy_dev = platform_device_register_data(dev, "mediatek-
> dp-phy",
> -							PLATFORM_DEVID_
> AUTO,
> -							&mtk_dp->regs,
> -							sizeof(struct
> regmap *));
> -	if (IS_ERR(mtk_dp->phy_dev))
> -		return dev_err_probe(dev, PTR_ERR(mtk_dp->phy_dev),
> -				     "Failed to create device mediatek-
> dp-phy\n");
> -
> -	mtk_dp_get_calibration_data(mtk_dp);
> -
> -	mtk_dp->phy = devm_phy_get(&mtk_dp->phy_dev->dev, "dp");
> -
> -	if (IS_ERR(mtk_dp->phy)) {
> -		platform_device_unregister(mtk_dp->phy_dev);
> -		return dev_err_probe(dev, PTR_ERR(mtk_dp->phy),
> -				     "Failed to get phy\n");
> -	}
> +	ret = mtk_dp_register_phy(mtk_dp);
> +	if (ret)
> +		return ret;
>  
>  	mtk_dp->bridge.funcs = &mtk_dp_bridge_funcs;
>  	mtk_dp->bridge.of_node = dev->of_node;