Linux Media Controller development
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From: Dave Stevenson <dave.stevenson@raspberrypi.com>
To: Tianshu Qiu <tian.shu.qiu@intel.com>,
	 Sakari Ailus <sakari.ailus@linux.intel.com>,
	 Mauro Carvalho Chehab <mchehab@kernel.org>
Cc: linux-media@vger.kernel.org, linux-kernel@vger.kernel.org,
	 David Heidelberg <david@ixit.cz>,
	 20260414-imx355-24mhz-v1-1-9ae77bc6e7ec@ixit.cz,
	 Dave Stevenson <dave.stevenson@raspberrypi.com>
Subject: [PATCH 08/13] media: imx355: pixel_rate never changes, so don't recompute
Date: Wed, 06 May 2026 19:23:46 +0100	[thread overview]
Message-ID: <20260506-media-imx355-v1-8-660685030455@raspberrypi.com> (raw)
In-Reply-To: <20260506-media-imx355-v1-0-660685030455@raspberrypi.com>

The pixel rate is always the same, so there is no need to try and
recompute it in imx355_set_pad_format, and then no need to have the
pointer to it stored.

Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
---
 drivers/media/i2c/imx355.c | 10 ++--------
 1 file changed, 2 insertions(+), 8 deletions(-)

diff --git a/drivers/media/i2c/imx355.c b/drivers/media/i2c/imx355.c
index b0cddb614775..12005bc40f36 100644
--- a/drivers/media/i2c/imx355.c
+++ b/drivers/media/i2c/imx355.c
@@ -161,7 +161,6 @@ struct imx355 {
 	struct v4l2_ctrl_handler ctrl_handler;
 	/* V4L2 Controls */
 	struct v4l2_ctrl *link_freq;
-	struct v4l2_ctrl *pixel_rate;
 	struct v4l2_ctrl *vblank;
 	struct v4l2_ctrl *hblank;
 	struct v4l2_ctrl *exposure;
@@ -860,7 +859,6 @@ imx355_set_pad_format(struct v4l2_subdev *sd,
 	s32 vblank_def;
 	s32 vblank_min;
 	s64 h_blank;
-	u64 pixel_rate;
 	u32 height;
 
 	mutex_lock(&imx355->mutex);
@@ -881,9 +879,6 @@ imx355_set_pad_format(struct v4l2_subdev *sd,
 		*framefmt = fmt->format;
 	} else {
 		imx355->cur_mode = mode;
-		pixel_rate = IMX355_LINK_FREQ_DEFAULT * 2 * 4;
-		do_div(pixel_rate, 10);
-		__v4l2_ctrl_s_ctrl_int64(imx355->pixel_rate, pixel_rate);
 		/* Update limits and set FPS to default */
 		height = imx355->cur_mode->height;
 		vblank_def = imx355->cur_mode->fll_def - height;
@@ -1175,9 +1170,8 @@ static int imx355_init_controls(struct imx355 *imx355)
 	pixel_rate = IMX355_LINK_FREQ_DEFAULT * 2 * 4;
 	do_div(pixel_rate, 10);
 	/* By default, PIXEL_RATE is read only */
-	imx355->pixel_rate = v4l2_ctrl_new_std(ctrl_hdlr, &imx355_ctrl_ops,
-					       V4L2_CID_PIXEL_RATE, pixel_rate,
-					       pixel_rate, 1, pixel_rate);
+	v4l2_ctrl_new_std(ctrl_hdlr, &imx355_ctrl_ops, V4L2_CID_PIXEL_RATE,
+			  pixel_rate, pixel_rate, 1, pixel_rate);
 
 	/* Initialize vblank/hblank/exposure parameters based on current mode */
 	mode = imx355->cur_mode;

-- 
2.34.1


  parent reply	other threads:[~2026-05-06 18:24 UTC|newest]

Thread overview: 29+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-05-06 18:23 [PATCH 00/13] media/imx355: General code cleanups, and adding support for 2 lane operation Dave Stevenson
2026-05-06 18:23 ` [PATCH 01/13] media: imx355: Remove duplicated registers from the mode tables Dave Stevenson
2026-05-07 13:41   ` Jacopo Mondi
2026-05-06 18:23 ` [PATCH 02/13] media: imx355: Remove setting FRM_LENGTH_LINES in the mode regs Dave Stevenson
2026-05-07 13:50   ` Jacopo Mondi
2026-05-06 18:23 ` [PATCH 03/13] media: imx355: Programmatically set the crop parameters for each mode Dave Stevenson
2026-05-07 14:00   ` Jacopo Mondi
2026-05-07 16:01     ` Dave Stevenson
2026-05-06 18:23 ` [PATCH 04/13] media: imx355: Remove the duplication between width/height and x/y_out_size Dave Stevenson
2026-05-06 18:23 ` [PATCH 05/13] media: imx355: Set register LINE_LENGTH_PCK programmatically Dave Stevenson
2026-05-07 14:09   ` Jacopo Mondi
2026-05-07 15:18     ` Dave Stevenson
2026-05-06 18:23 ` [PATCH 06/13] media: imx355: Set binning mode registers programmatically Dave Stevenson
2026-05-07 14:12   ` Jacopo Mondi
2026-05-06 18:23 ` [PATCH 07/13] media: imx355: Remove link_freq_index from each mode as ununsed Dave Stevenson
2026-05-07 14:12   ` Jacopo Mondi
2026-05-06 18:23 ` Dave Stevenson [this message]
2026-05-07 14:13   ` [PATCH 08/13] media: imx355: pixel_rate never changes, so don't recompute Jacopo Mondi
2026-05-06 18:23 ` [PATCH 09/13] media: imx355: Remove redundant fll_min, and implement fixed offset Dave Stevenson
2026-05-07 14:29   ` Jacopo Mondi
2026-05-07 15:21     ` Dave Stevenson
2026-05-06 18:23 ` [PATCH 10/13] media: imx355: Add support for get_selection Dave Stevenson
2026-05-07 14:42   ` Jacopo Mondi
2026-05-07 15:02     ` Dave Stevenson
2026-05-06 18:23 ` [PATCH 11/13] media: imx355: Use pm_runtime autosuspend_delay Dave Stevenson
2026-05-07 14:43   ` Jacopo Mondi
2026-05-06 18:23 ` [PATCH 12/13] media: imx355: Convert to new CCI register access helpers Dave Stevenson
2026-05-07 14:49   ` Jacopo Mondi
2026-05-06 18:23 ` [PATCH 13/13] media: imx355: Support 2 lane readout Dave Stevenson

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