linux-kernel - [PATCH v2 2/5] media: nxp: imx8-isi: Simplify code by using helper macro

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Message-Id: <20250905-isi_imx93-v2-2-37db5f768c57@nxp.com>
Date: Fri, 05 Sep 2025 14:55:59 +0800
From: Guoniu Zhou <guoniu.zhou@....com>
To: 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>, Frank Li <Frank.Li@....com>
Cc: linux-media@...r.kernel.org, devicetree@...r.kernel.org, 
 imx@...ts.linux.dev, linux-arm-kernel@...ts.infradead.org, 
 linux-kernel@...r.kernel.org, Guoniu Zhou <guoniu.zhou@....com>
Subject: [PATCH v2 2/5] media: nxp: imx8-isi: Simplify code by using helper
 macro

Simplify code by using helper macro FIELD_PREP() and GENMASK().

No functions changed.

Reviewed-by: Frank Li <Frank.Li@....com>
Signed-off-by: Guoniu Zhou <guoniu.zhou@....com>
---
 drivers/media/platform/nxp/imx8-isi/imx8-isi-gasket.c | 7 ++++---
 1 file changed, 4 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..2f5e7299b537d612fb1fe6688c1b75bfd2d6049b 100644
--- a/drivers/media/platform/nxp/imx8-isi/imx8-isi-gasket.c
+++ b/drivers/media/platform/nxp/imx8-isi/imx8-isi-gasket.c
@@ -3,6 +3,8 @@
  * Copyright 2019-2023 NXP
  */
 
+#include <linux/bitfield.h>
+#include <linux/bits.h>
 #include <linux/regmap.h>
 
 #include <media/mipi-csi2.h>
@@ -16,8 +18,7 @@
 #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 +59,7 @@ 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