linux-kernel - [PATCH 08/18] media: rcar-csi2: Move rcar2_calc

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Message-Id: <20250219-rcar-streams-v1-8-f1b93e370aab@ideasonboard.com>
Date: Wed, 19 Feb 2025 15:49:02 +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 08/18] media: rcar-csi2: Move rcar2_calc_mbps()

Move the function so that it can call rcsi2_get_active_lanes() in the
following patch.

Signed-off-by: Tomi Valkeinen <tomi.valkeinen+renesas@...asonboard.com>
---
 drivers/media/platform/renesas/rcar-csi2.c | 62 +++++++++++++++---------------
 1 file changed, 31 insertions(+), 31 deletions(-)

diff --git a/drivers/media/platform/renesas/rcar-csi2.c b/drivers/media/platform/renesas/rcar-csi2.c
index 92697ea3df01..8de0f88aca61 100644
--- a/drivers/media/platform/renesas/rcar-csi2.c
+++ b/drivers/media/platform/renesas/rcar-csi2.c
@@ -951,37 +951,6 @@ static int rcsi2_set_phypll(struct rcar_csi2 *priv, unsigned int mbps)
 	return 0;
 }
 
-static int rcsi2_calc_mbps(struct rcar_csi2 *priv, unsigned int bpp,
-			   unsigned int lanes)
-{
-	struct v4l2_subdev *source;
-	s64 freq;
-	u64 mbps;
-
-	if (!priv->remote)
-		return -ENODEV;
-
-	source = priv->remote;
-
-	freq = v4l2_get_link_freq(source->ctrl_handler, bpp, 2 * lanes);
-	if (freq < 0) {
-		int ret = (int)freq;
-
-		dev_err(priv->dev, "failed to get link freq for %s: %d\n",
-			source->name, ret);
-
-		return ret;
-	}
-
-	mbps = div_u64(freq * 2, MEGA);
-
-	/* Adjust for C-PHY, divide by 2.8. */
-	if (priv->cphy)
-		mbps = div_u64(mbps * 5, 14);
-
-	return mbps;
-}
-
 static int rcsi2_get_active_lanes(struct rcar_csi2 *priv,
 				  unsigned int *lanes)
 {
@@ -1029,6 +998,37 @@ static int rcsi2_get_active_lanes(struct rcar_csi2 *priv,
 	return 0;
 }
 
+static int rcsi2_calc_mbps(struct rcar_csi2 *priv, unsigned int bpp,
+			   unsigned int lanes)
+{
+	struct v4l2_subdev *source;
+	s64 freq;
+	u64 mbps;
+
+	if (!priv->remote)
+		return -ENODEV;
+
+	source = priv->remote;
+
+	freq = v4l2_get_link_freq(source->ctrl_handler, bpp, 2 * lanes);
+	if (freq < 0) {
+		int ret = (int)freq;
+
+		dev_err(priv->dev, "failed to get link freq for %s: %d\n",
+			source->name, ret);
+
+		return ret;
+	}
+
+	mbps = div_u64(freq * 2, MEGA);
+
+	/* Adjust for C-PHY, divide by 2.8. */
+	if (priv->cphy)
+		mbps = div_u64(mbps * 5, 14);
+
+	return mbps;
+}
+
 static int rcsi2_start_receiver_gen3(struct rcar_csi2 *priv,
 				     struct v4l2_subdev_state *state)
 {

-- 
2.43.0