mirror of
https://github.com/openwrt/openwrt.git
synced 2024-12-27 01:11:14 +00:00
793f8ab62c
Add kernel patches for version 6.1. Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
90 lines
3.1 KiB
Diff
90 lines
3.1 KiB
Diff
From 5003200e5b6e1485515fe18aa5031769930e465e Mon Sep 17 00:00:00 2001
|
|
From: Dave Stevenson <dave.stevenson@raspberrypi.com>
|
|
Date: Thu, 16 Feb 2023 00:29:54 +0200
|
|
Subject: [PATCH] media: i2c: imx290: Fix the pixel rate at 148.5Mpix/s
|
|
|
|
Should be upstream commit 4381df0c756f
|
|
|
|
The datasheet lists the link frequency changes between
|
|
1080p and 720p modes. This is correct that the link frequency
|
|
changes as measured on an oscilloscope.
|
|
|
|
Link frequency is not necessarily the same as pixel rate.
|
|
|
|
The datasheet gives standard configurations for 1080p and 720p
|
|
modes at a number of frame rates.
|
|
Looking at the 1080p mode it gives:
|
|
HMAX = 0x898 = 2200
|
|
VMAX = 0x465 = 1125
|
|
2200 * 1125 * 60fps = 148.5MPix/s
|
|
|
|
Looking at the 720p mode it gives:
|
|
HMAX = 0xce4 = 3300
|
|
VMAX = 0x2ee = 750
|
|
3300 * 750 * 60fps = 148.5Mpix/s
|
|
|
|
This driver currently scales the pixel rate proportionally to the
|
|
link frequency, however the above shows that this is not the
|
|
correct thing to do, and currently all frame rate and exposure
|
|
calculations give incorrect results.
|
|
|
|
Correctly report the pixel rate as being 148.5MPix/s under any
|
|
mode.
|
|
|
|
Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
|
|
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
|
|
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
|
|
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
|
|
---
|
|
drivers/media/i2c/imx290.c | 16 +++++-----------
|
|
1 file changed, 5 insertions(+), 11 deletions(-)
|
|
|
|
--- a/drivers/media/i2c/imx290.c
|
|
+++ b/drivers/media/i2c/imx290.c
|
|
@@ -110,6 +110,8 @@
|
|
|
|
#define IMX290_VMAX_DEFAULT 1125
|
|
|
|
+#define IMX290_PIXEL_RATE 148500000
|
|
+
|
|
/*
|
|
* The IMX290 pixel array is organized as follows:
|
|
*
|
|
@@ -208,7 +210,6 @@ struct imx290 {
|
|
|
|
struct v4l2_ctrl_handler ctrls;
|
|
struct v4l2_ctrl *link_freq;
|
|
- struct v4l2_ctrl *pixel_rate;
|
|
struct v4l2_ctrl *hblank;
|
|
struct v4l2_ctrl *vblank;
|
|
};
|
|
@@ -674,15 +675,8 @@ static void imx290_ctrl_update(struct im
|
|
{
|
|
unsigned int hblank = mode->hmax - mode->width;
|
|
unsigned int vblank = IMX290_VMAX_DEFAULT - mode->height;
|
|
- s64 link_freq = imx290_link_freqs_ptr(imx290)[mode->link_freq_index];
|
|
- u64 pixel_rate;
|
|
-
|
|
- /* pixel rate = link_freq * 2 * nr_of_lanes / bits_per_sample */
|
|
- pixel_rate = link_freq * 2 * imx290->nlanes;
|
|
- do_div(pixel_rate, imx290_format_info(imx290, format->code)->bpp);
|
|
|
|
__v4l2_ctrl_s_ctrl(imx290->link_freq, mode->link_freq_index);
|
|
- __v4l2_ctrl_s_ctrl_int64(imx290->pixel_rate, pixel_rate);
|
|
|
|
__v4l2_ctrl_modify_range(imx290->hblank, hblank, hblank, 1, hblank);
|
|
__v4l2_ctrl_modify_range(imx290->vblank, vblank, vblank, 1, vblank);
|
|
@@ -732,9 +726,9 @@ static int imx290_ctrl_init(struct imx29
|
|
if (imx290->link_freq)
|
|
imx290->link_freq->flags |= V4L2_CTRL_FLAG_READ_ONLY;
|
|
|
|
- imx290->pixel_rate = v4l2_ctrl_new_std(&imx290->ctrls, &imx290_ctrl_ops,
|
|
- V4L2_CID_PIXEL_RATE,
|
|
- 1, INT_MAX, 1, 1);
|
|
+ v4l2_ctrl_new_std(&imx290->ctrls, &imx290_ctrl_ops, V4L2_CID_PIXEL_RATE,
|
|
+ IMX290_PIXEL_RATE, IMX290_PIXEL_RATE, 1,
|
|
+ IMX290_PIXEL_RATE);
|
|
|
|
v4l2_ctrl_new_std_menu_items(&imx290->ctrls, &imx290_ctrl_ops,
|
|
V4L2_CID_TEST_PATTERN,
|