linux-kernel - [PATCH 1/3] media: i2c: alvium: removal of dft_fr, min_fr and max

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Message-Id: <20231215082452.1720481-2-tomm.merciai@gmail.com>
Date: Fri, 15 Dec 2023 09:24:50 +0100
From: Tommaso Merciai <tomm.merciai@...il.com>
To: 
Cc: linuxfancy@...glegroups.com,
	sakari.ailus@...ux.intel.com,
	laurent.pinchart@...asonboard.com,
	tomm.merciai@...il.com,
	Martin Hecht <martin.hecht@...et.eu>,
	Mauro Carvalho Chehab <mchehab@...nel.org>,
	linux-media@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH 1/3] media: i2c: alvium: removal of dft_fr, min_fr and max_fr

Remove driver private data dft_fr, min_fr and max_fr.
Those are used only in alvium_set_frame_interval function.
Use local ones instead.

Signed-off-by: Tommaso Merciai <tomm.merciai@...il.com>
---
 drivers/media/i2c/alvium-csi2.c | 45 +++++++++++++++------------------
 drivers/media/i2c/alvium-csi2.h |  3 ---
 2 files changed, 21 insertions(+), 27 deletions(-)

diff --git a/drivers/media/i2c/alvium-csi2.c b/drivers/media/i2c/alvium-csi2.c
index 34ff7fad3877..c4b7851045a1 100644
--- a/drivers/media/i2c/alvium-csi2.c
+++ b/drivers/media/i2c/alvium-csi2.c
@@ -1170,40 +1170,36 @@ static int alvium_set_bayer_pattern(struct alvium_dev *alvium,
 	return 0;
 }
 
-static int alvium_get_frame_interval(struct alvium_dev *alvium)
+static int alvium_get_frame_interval(struct alvium_dev *alvium,
+				     u64 *dft_fr, u64 *min_fr, u64 *max_fr)
 {
-	u64 dft_fr, min_fr, max_fr;
 	int ret = 0;
 
 	alvium_read(alvium, REG_BCRM_ACQUISITION_FRAME_RATE_RW,
-		    &dft_fr, &ret);
+		    dft_fr, &ret);
 	alvium_read(alvium, REG_BCRM_ACQUISITION_FRAME_RATE_MIN_R,
-		    &min_fr, &ret);
+		    min_fr, &ret);
 	alvium_read(alvium, REG_BCRM_ACQUISITION_FRAME_RATE_MAX_R,
-		    &max_fr, &ret);
+		    max_fr, &ret);
 	if (ret)
 		return ret;
 
-	alvium->dft_fr = dft_fr;
-	alvium->min_fr = min_fr;
-	alvium->max_fr = max_fr;
-
 	return 0;
 }
 
-static int alvium_set_frame_rate(struct alvium_dev *alvium)
+static int alvium_set_frame_rate(struct alvium_dev *alvium, u64 fr)
 {
 	struct device *dev = &alvium->i2c_client->dev;
 	int ret;
 
 	ret = alvium_write_hshake(alvium, REG_BCRM_ACQUISITION_FRAME_RATE_RW,
-				  alvium->fr);
+				  fr);
 	if (ret) {
 		dev_err(dev, "Fail to set frame rate lanes reg\n");
 		return ret;
 	}
 
-	dev_dbg(dev, "set frame rate: %llu us\n", alvium->fr);
+	dev_dbg(dev, "set frame rate: %llu us\n", fr);
 
 	return 0;
 }
@@ -1667,36 +1663,36 @@ static int alvium_g_frame_interval(struct v4l2_subdev *sd,
 }
 
 static int alvium_set_frame_interval(struct alvium_dev *alvium,
-				     struct v4l2_subdev_frame_interval *fi)
+				     struct v4l2_subdev *sd,
+				     struct v4l2_subdev_state *sd_state,
+				     struct v4l2_subdev_frame_interval *fi,
+				     u64 *req_fr)
 {
 	struct device *dev = &alvium->i2c_client->dev;
-	u64 req_fr, min_fr, max_fr;
+	u64 dft_fr, min_fr, max_fr;
 	int ret;
 
 	if (fi->interval.denominator == 0)
 		return -EINVAL;
 
-	ret = alvium_get_frame_interval(alvium);
+	ret = alvium_get_frame_interval(alvium, &dft_fr, &min_fr, &max_fr);
 	if (ret) {
 		dev_err(dev, "Fail to get frame interval\n");
 		return ret;
 	}
 
-	min_fr = alvium->min_fr;
-	max_fr = alvium->max_fr;
-
 	dev_dbg(dev, "fi->interval.numerator = %d\n",
 		fi->interval.numerator);
 	dev_dbg(dev, "fi->interval.denominator = %d\n",
 		fi->interval.denominator);
 
-	req_fr = (u64)((fi->interval.denominator * USEC_PER_SEC) /
+	*req_fr = (u64)((fi->interval.denominator * USEC_PER_SEC) /
 		       fi->interval.numerator);
 
-	if (req_fr >= max_fr && req_fr <= min_fr)
-		req_fr = alvium->dft_fr;
+	if (*req_fr >= max_fr && *req_fr <= min_fr)
+		*req_fr = dft_fr;
 
-	alvium->fr = req_fr;
+	alvium->fr = *req_fr;
 	alvium->frame_interval.numerator = fi->interval.numerator;
 	alvium->frame_interval.denominator = fi->interval.denominator;
 
@@ -1708,6 +1704,7 @@ static int alvium_s_frame_interval(struct v4l2_subdev *sd,
 				   struct v4l2_subdev_frame_interval *fi)
 {
 	struct alvium_dev *alvium = sd_to_alvium(sd);
+	u64 req_fr;
 	int ret;
 
 	/*
@@ -1720,9 +1717,9 @@ static int alvium_s_frame_interval(struct v4l2_subdev *sd,
 	if (alvium->streaming)
 		return -EBUSY;
 
-	ret = alvium_set_frame_interval(alvium, fi);
+	ret = alvium_set_frame_interval(alvium, sd, sd_state, fi, &req_fr);
 	if (!ret)
-		ret = alvium_set_frame_rate(alvium);
+		ret = alvium_set_frame_rate(alvium, req_fr);
 
 	return ret;
 }
diff --git a/drivers/media/i2c/alvium-csi2.h b/drivers/media/i2c/alvium-csi2.h
index 8b554bffdc39..a6529b28e7dd 100644
--- a/drivers/media/i2c/alvium-csi2.h
+++ b/drivers/media/i2c/alvium-csi2.h
@@ -443,9 +443,6 @@ struct alvium_dev {
 
 	struct alvium_mode mode;
 	struct v4l2_fract frame_interval;
-	u64 dft_fr;
-	u64 min_fr;
-	u64 max_fr;
 	u64 fr;
 
 	u8 h_sup_csi_lanes;
-- 
2.34.1