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From:   Chun-Kuang Hu <chunkuang.hu@kernel.org>
Date:   Tue, 4 Apr 2023 00:36:32 +0800
Message-ID: <CAAOTY_-cd0gQ6AEK_bLZf6m87M0G7Ag_AYKKPBFyBXGgh-2y1g@mail.gmail.com>
Subject: Re: [PATCH 2/2] phy: mtk-mipi-csi: add driver for CSI phy
To:     Julien Stephan <jstephan@baylibre.com>
Cc:     Phi-bang Nguyen <pnguyen@baylibre.com>,
        Louis Kuo <louis.kuo@mediatek.com>,
        Chunfeng Yun <chunfeng.yun@mediatek.com>,
        Andy Hsieh <andy.hsieh@mediatek.com>,
        Vinod Koul <vkoul@kernel.org>,
        Kishon Vijay Abraham I <kishon@kernel.org>,
        Rob Herring <robh+dt@kernel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>,
        Chun-Kuang Hu <chunkuang.hu@kernel.org>,
        Philipp Zabel <p.zabel@pengutronix.de>,
        Matthias Brugger <matthias.bgg@gmail.com>,
        AngeloGioacchino Del Regno 
        <angelogioacchino.delregno@collabora.com>,
        "moderated list:ARM/Mediatek USB3 PHY DRIVER" 
        <linux-arm-kernel@lists.infradead.org>,
        "moderated list:ARM/Mediatek USB3 PHY DRIVER" 
        <linux-mediatek@lists.infradead.org>,
        "open list:GENERIC PHY FRAMEWORK" <linux-phy@lists.infradead.org>,
        "open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS" 
        <devicetree@vger.kernel.org>,
        open list <linux-kernel@vger.kernel.org>,
        "open list:DRM DRIVERS FOR MEDIATEK" 
        <dri-devel@lists.freedesktop.org>
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Hi, Julien:

Julien Stephan <jstephan@baylibre.com> =E6=96=BC 2023=E5=B9=B44=E6=9C=883=
=E6=97=A5 =E9=80=B1=E4=B8=80 =E4=B8=8B=E5=8D=883:20=E5=AF=AB=E9=81=93=EF=BC=
=9A
>
> From: Phi-bang Nguyen <pnguyen@baylibre.com>
>
> This is a new driver that supports the MIPI CSI CD-PHY for mediatek
> mt8365 soc
>
> Signed-off-by: Louis Kuo <louis.kuo@mediatek.com>
> Signed-off-by: Phi-bang Nguyen <pnguyen@baylibre.com>
> [Julien Stephan: use regmap]
> [Julien Stephan: use GENMASK]
> Co-developed-by: Julien Stephan <jstephan@baylibre.com>
> Signed-off-by: Julien Stephan <jstephan@baylibre.com>
> ---
>  .../bindings/phy/mediatek,csi-phy.yaml        |   9 +-
>  MAINTAINERS                                   |   1 +
>  drivers/phy/mediatek/Kconfig                  |   8 +
>  drivers/phy/mediatek/Makefile                 |   2 +
>  .../phy/mediatek/phy-mtk-mipi-csi-rx-reg.h    | 435 ++++++++++++++++++
>  drivers/phy/mediatek/phy-mtk-mipi-csi.c       | 392 ++++++++++++++++
>  6 files changed, 845 insertions(+), 2 deletions(-)
>  create mode 100644 drivers/phy/mediatek/phy-mtk-mipi-csi-rx-reg.h
>  create mode 100644 drivers/phy/mediatek/phy-mtk-mipi-csi.c
>

[snip]

> +
> +#define REGMAP_BIT(map, reg, field, val) \
> +       regmap_update_bits((map), reg, reg##_##field##_MASK, \
> +                          (val) << reg##_##field##_SHIFT)
> +

Use FIELD_PREP() macro  so you can drop the definition of SHIFT symbol.

Regards,
Chun-Kuang.