linux-kernel - [PATCH v4 02/15] media: rcar-csi2: Improve FLD_FLD

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Message-Id: <20251216-rcar-streams-v4-2-f28b4831cc67@ideasonboard.com>
Date: Tue, 16 Dec 2025 17:18:19 +0200
From: Tomi Valkeinen <tomi.valkeinen+renesas@...asonboard.com>
To: Niklas Söderlund <niklas.soderlund@...natech.se>, 
 Mauro Carvalho Chehab <mchehab@...nel.org>, 
 Sakari Ailus <sakari.ailus@...ux.intel.com>
Cc: linux-media@...r.kernel.org, linux-renesas-soc@...r.kernel.org, 
 linux-kernel@...r.kernel.org, 
 Niklas Söderlund <niklas.soderlund+renesas@...natech.se>, 
 Mauro Carvalho Chehab <mchehab+huawei@...nel.org>, 
 Laurent Pinchart <laurent.pinchart@...asonboard.com>, 
 Jacopo Mondi <jacopo.mondi@...asonboard.com>, 
 Tomi Valkeinen <tomi.valkeinen+renesas@...asonboard.com>
Subject: [PATCH v4 02/15] media: rcar-csi2: Improve FLD_FLD_EN macros

Instead of having four macros for FLD_FLD_EN for different channels,
have just one FLD_FLD_EN(ch).

Signed-off-by: Tomi Valkeinen <tomi.valkeinen+renesas@...asonboard.com>
---
 drivers/media/platform/renesas/rcar-csi2.c | 9 +++------
 1 file changed, 3 insertions(+), 6 deletions(-)

diff --git a/drivers/media/platform/renesas/rcar-csi2.c b/drivers/media/platform/renesas/rcar-csi2.c
index d1b31ab8b8c4..3cd35adb6803 100644
--- a/drivers/media/platform/renesas/rcar-csi2.c
+++ b/drivers/media/platform/renesas/rcar-csi2.c
@@ -71,10 +71,7 @@ struct rcar_csi2;
 #define FLD_REG				0x1c
 #define FLD_FLD_NUM(n)			(((n) & 0xff) << 16)
 #define FLD_DET_SEL(n)			(((n) & 0x3) << 4)
-#define FLD_FLD_EN4			BIT(3)
-#define FLD_FLD_EN3			BIT(2)
-#define FLD_FLD_EN2			BIT(1)
-#define FLD_FLD_EN			BIT(0)
+#define FLD_FLD_EN(ch)			BIT(ch)
 
 /* Automatic Standby Control */
 #define ASTBY_REG			0x20
@@ -1082,8 +1079,8 @@ static int rcsi2_start_receiver_gen3(struct rcar_csi2 *priv,
 	}
 
 	if (fmt->field == V4L2_FIELD_ALTERNATE)
-		fld = FLD_DET_SEL(1) | FLD_FLD_EN4 | FLD_FLD_EN3 | FLD_FLD_EN2
-			| FLD_FLD_EN;
+		fld = FLD_DET_SEL(1) | FLD_FLD_EN(3) | FLD_FLD_EN(2) |
+		      FLD_FLD_EN(1) | FLD_FLD_EN(0);
 
 	/*
 	 * Get the number of active data lanes inspecting the remote mbus

-- 
2.43.0