linux-kernel - [PATCH 3/3] media: i2c: alvium: store frame interval in subdev state

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Message-Id: <20231215082452.1720481-4-tomm.merciai@gmail.com>
Date: Fri, 15 Dec 2023 09:24:52 +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 3/3] media: i2c: alvium: store frame interval in subdev state

Use the newly added storage for frame interval in the subdev state to
simplify the driver.

Signed-off-by: Tommaso Merciai <tomm.merciai@...il.com>
---
 drivers/media/i2c/alvium-csi2.c | 40 ++++++++++-----------------------
 drivers/media/i2c/alvium-csi2.h |  2 --
 2 files changed, 12 insertions(+), 30 deletions(-)

diff --git a/drivers/media/i2c/alvium-csi2.c b/drivers/media/i2c/alvium-csi2.c
index fde456357be1..81f683b3c849 100644
--- a/drivers/media/i2c/alvium-csi2.c
+++ b/drivers/media/i2c/alvium-csi2.c
@@ -1643,25 +1643,6 @@ static int alvium_hw_init(struct alvium_dev *alvium)
 }
 
 /* --------------- Subdev Operations --------------- */
-
-static int alvium_g_frame_interval(struct v4l2_subdev *sd,
-				   struct v4l2_subdev_state *sd_state,
-				   struct v4l2_subdev_frame_interval *fi)
-{
-	struct alvium_dev *alvium = sd_to_alvium(sd);
-
-	/*
-	 * FIXME: Implement support for V4L2_SUBDEV_FORMAT_TRY, using the V4L2
-	 * subdev active state API.
-	 */
-	if (fi->which != V4L2_SUBDEV_FORMAT_ACTIVE)
-		return -EINVAL;
-
-	fi->interval = alvium->frame_interval;
-
-	return 0;
-}
-
 static int alvium_s_frame_interval(struct v4l2_subdev *sd,
 				   struct v4l2_subdev_state *sd_state,
 				   struct v4l2_subdev_frame_interval *fi)
@@ -1669,6 +1650,7 @@ static int alvium_s_frame_interval(struct v4l2_subdev *sd,
 	struct alvium_dev *alvium = sd_to_alvium(sd);
 	struct device *dev = &alvium->i2c_client->dev;
 	u64 req_fr, dft_fr, min_fr, max_fr;
+	struct v4l2_fract *interval;
 	int ret;
 
 	/*
@@ -1701,9 +1683,10 @@ static int alvium_s_frame_interval(struct v4l2_subdev *sd,
 	if (req_fr >= max_fr && req_fr <= min_fr)
 		req_fr = dft_fr;
 
-	alvium->fr = req_fr;
-	alvium->frame_interval.numerator = fi->interval.numerator;
-	alvium->frame_interval.denominator = fi->interval.denominator;
+	interval = v4l2_subdev_state_get_interval(sd_state, 0);
+
+	interval->numerator = fi->interval.numerator;
+	interval->denominator = fi->interval.denominator;
 
 	return alvium_set_frame_rate(alvium, req_fr);
 }
@@ -1853,6 +1836,7 @@ static int alvium_init_state(struct v4l2_subdev *sd,
 {
 	struct alvium_dev *alvium = sd_to_alvium(sd);
 	struct alvium_mode *mode = &alvium->mode;
+	struct v4l2_fract *interval;
 	struct v4l2_subdev_format sd_fmt = {
 		.which = V4L2_SUBDEV_FORMAT_TRY,
 		.format = alvium_csi2_default_fmt,
@@ -1870,6 +1854,11 @@ static int alvium_init_state(struct v4l2_subdev *sd,
 	*v4l2_subdev_state_get_crop(state, 0) = sd_crop.rect;
 	*v4l2_subdev_state_get_format(state, 0) = sd_fmt.format;
 
+	/* Setup initial frame interval*/
+	interval = v4l2_subdev_state_get_interval(state, 0);
+	interval->numerator = 1;
+	interval->denominator = ALVIUM_DEFAULT_FR_HZ;
+
 	return 0;
 }
 
@@ -2239,7 +2228,7 @@ static const struct v4l2_subdev_pad_ops alvium_pad_ops = {
 	.set_fmt = alvium_set_fmt,
 	.get_selection = alvium_get_selection,
 	.set_selection = alvium_set_selection,
-	.get_frame_interval = alvium_g_frame_interval,
+	.get_frame_interval = v4l2_subdev_get_frame_interval,
 	.set_frame_interval = alvium_s_frame_interval,
 };
 
@@ -2260,11 +2249,6 @@ static int alvium_subdev_init(struct alvium_dev *alvium)
 	struct v4l2_subdev *sd = &alvium->sd;
 	int ret;
 
-	/* Setup initial frame interval*/
-	alvium->frame_interval.numerator = 1;
-	alvium->frame_interval.denominator = ALVIUM_DEFAULT_FR_HZ;
-	alvium->fr = ALVIUM_DEFAULT_FR_HZ;
-
 	/* Setup the initial mode */
 	alvium->mode.fmt = alvium_csi2_default_fmt;
 	alvium->mode.width = alvium_csi2_default_fmt.width;
diff --git a/drivers/media/i2c/alvium-csi2.h b/drivers/media/i2c/alvium-csi2.h
index a6529b28e7dd..f5e26257b042 100644
--- a/drivers/media/i2c/alvium-csi2.h
+++ b/drivers/media/i2c/alvium-csi2.h
@@ -442,8 +442,6 @@ struct alvium_dev {
 	s32 inc_sharp;
 
 	struct alvium_mode mode;
-	struct v4l2_fract frame_interval;
-	u64 fr;
 
 	u8 h_sup_csi_lanes;
 	u64 link_freq;
-- 
2.34.1