linux-kernel - Re: [PATCH 2/5] media: nxp: imx8-isi: Simplify code by using helper macro

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Message-ID: <aK8WBvQdkY2ciQs9@lizhi-Precision-Tower-5810>
Date: Wed, 27 Aug 2025 10:28:22 -0400
From: Frank Li <Frank.li@....com>
To: Guoniu Zhou <guoniu.zhou@....com>
Cc: Laurent Pinchart <laurent.pinchart@...asonboard.com>,
	Mauro Carvalho Chehab <mchehab@...nel.org>,
	Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>, Shawn Guo <shawnguo@...nel.org>,
	Sascha Hauer <s.hauer@...gutronix.de>,
	Pengutronix Kernel Team <kernel@...gutronix.de>,
	Fabio Estevam <festevam@...il.com>, linux-media@...r.kernel.org,
	devicetree@...r.kernel.org, imx@...ts.linux.dev,
	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 2/5] media: nxp: imx8-isi: Simplify code by using helper
 macro

On Wed, Aug 27, 2025 at 05:53:49PM +0800, Guoniu Zhou wrote:
> Simplify code by using helper macro FIELD_PREP() and GENMASK().
>
> No functions changed.
>
> Signed-off-by: Guoniu Zhou <guoniu.zhou@....com>

Reviewed-by: Frank Li <Frank.Li@....com>

> ---
>  drivers/media/platform/nxp/imx8-isi/imx8-isi-gasket.c | 5 ++---
>  1 file changed, 2 insertions(+), 3 deletions(-)
>
> diff --git a/drivers/media/platform/nxp/imx8-isi/imx8-isi-gasket.c b/drivers/media/platform/nxp/imx8-isi/imx8-isi-gasket.c
> index f69c3b5d478209c083738477edf380e3f280c471..c05e26798032367813c8730550a7eec2f237b4eb 100644
> --- a/drivers/media/platform/nxp/imx8-isi/imx8-isi-gasket.c
> +++ b/drivers/media/platform/nxp/imx8-isi/imx8-isi-gasket.c
> @@ -16,8 +16,7 @@
>  #define GASKET_BASE(n)				(0x0060 + (n) * 0x30)
>
>  #define GASKET_CTRL				0x0000
> -#define GASKET_CTRL_DATA_TYPE(dt)		((dt) << 8)
> -#define GASKET_CTRL_DATA_TYPE_MASK		(0x3f << 8)
> +#define GASKET_CTRL_DATA_TYPE(dt)		FIELD_PREP(GENMASK(13, 8), (dt))
>  #define GASKET_CTRL_DUAL_COMP_ENABLE		BIT(1)
>  #define GASKET_CTRL_ENABLE			BIT(0)
>
> @@ -58,7 +57,7 @@ const struct mxc_gasket_ops mxc_imx8_gasket_ops = {
>   */
>
>  #define DISP_MIX_CAMERA_MUX                     0x30
> -#define DISP_MIX_CAMERA_MUX_DATA_TYPE(x)        (((x) & 0x3f) << 3)
> +#define DISP_MIX_CAMERA_MUX_DATA_TYPE(x)        FIELD_PREP(GENMASK(8, 3), (x))
>  #define DISP_MIX_CAMERA_MUX_GASKET_ENABLE       BIT(16)
>
>  static void mxc_imx93_gasket_enable(struct mxc_isi_dev *isi,
>
> --
> 2.34.1
>