mirror of
https://github.com/openwrt/openwrt.git
synced 2024-12-30 02:29:01 +00:00
793f8ab62c
Add kernel patches for version 6.1. Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
85 lines
3.0 KiB
Diff
85 lines
3.0 KiB
Diff
From 6b0cce78e4c84189c93ad0fbad7b8d08439135d4 Mon Sep 17 00:00:00 2001
|
|
From: Naushir Patuck <naush@raspberrypi.com>
|
|
Date: Tue, 14 Mar 2023 12:56:14 +0000
|
|
Subject: [PATCH] media: i2c: imx296: Add helper for hblank control
|
|
|
|
Add a helper function to setup the horizontal blanking control. Update
|
|
the control limits on set_format as the horizontal blanking time must
|
|
remain constant regardless of sensor output width.
|
|
|
|
Signed-off-by: Naushir Patuck <naush@raspberrypi.com>
|
|
---
|
|
drivers/media/i2c/imx296.c | 44 ++++++++++++++++++++++++++------------
|
|
1 file changed, 30 insertions(+), 14 deletions(-)
|
|
|
|
--- a/drivers/media/i2c/imx296.c
|
|
+++ b/drivers/media/i2c/imx296.c
|
|
@@ -384,10 +384,36 @@ static const struct v4l2_ctrl_ops imx296
|
|
.s_ctrl = imx296_s_ctrl,
|
|
};
|
|
|
|
+static void imx296_setup_hblank(struct imx296 *sensor, unsigned int width)
|
|
+{
|
|
+ /*
|
|
+ * Horizontal blanking is controlled through the HMAX register, which
|
|
+ * contains a line length in contains a line length in units of an
|
|
+ * internal 74.25 MHz clock derived from the INCLK. The HMAX value is
|
|
+ * currently fixed to 1100, convert it to a number of pixels based on
|
|
+ * the nominal pixel rate.
|
|
+ *
|
|
+ * Horizontal blanking is fixed, regardless of the crop width, so
|
|
+ * ensure the hblank limits are adjusted to account for this.
|
|
+ */
|
|
+ unsigned int hblank = 1100 * 1188000000ULL / 10 / 74250000 - width;
|
|
+
|
|
+ if (!sensor->hblank) {
|
|
+ sensor->hblank = v4l2_ctrl_new_std(&sensor->ctrls,
|
|
+ &imx296_ctrl_ops,
|
|
+ V4L2_CID_HBLANK, hblank,
|
|
+ hblank, 1, hblank);
|
|
+ if (sensor->hblank)
|
|
+ sensor->hblank->flags |= V4L2_CTRL_FLAG_READ_ONLY;
|
|
+ } else {
|
|
+ __v4l2_ctrl_modify_range(sensor->hblank, hblank, hblank, 1,
|
|
+ hblank);
|
|
+ }
|
|
+}
|
|
+
|
|
static int imx296_ctrls_init(struct imx296 *sensor)
|
|
{
|
|
struct v4l2_fwnode_device_properties props;
|
|
- unsigned int hblank;
|
|
int ret;
|
|
|
|
ret = v4l2_fwnode_device_parse(sensor->dev, &props);
|
|
@@ -402,19 +428,7 @@ static int imx296_ctrls_init(struct imx2
|
|
V4L2_CID_ANALOGUE_GAIN, IMX296_GAIN_MIN,
|
|
IMX296_GAIN_MAX, 1, IMX296_GAIN_MIN);
|
|
|
|
- /*
|
|
- * Horizontal blanking is controlled through the HMAX register, which
|
|
- * contains a line length in INCK clock units. The INCK frequency is
|
|
- * fixed to 74.25 MHz. The HMAX value is currently fixed to 1100,
|
|
- * convert it to a number of pixels based on the nominal pixel rate.
|
|
- */
|
|
- hblank = 1100 * 1188000000ULL / 10 / 74250000
|
|
- - IMX296_PIXEL_ARRAY_WIDTH;
|
|
- sensor->hblank = v4l2_ctrl_new_std(&sensor->ctrls, &imx296_ctrl_ops,
|
|
- V4L2_CID_HBLANK, hblank, hblank, 1,
|
|
- hblank);
|
|
- if (sensor->hblank)
|
|
- sensor->hblank->flags |= V4L2_CTRL_FLAG_READ_ONLY;
|
|
+ imx296_setup_hblank(sensor, IMX296_PIXEL_ARRAY_WIDTH);
|
|
|
|
sensor->vblank = v4l2_ctrl_new_std(&sensor->ctrls, &imx296_ctrl_ops,
|
|
V4L2_CID_VBLANK, 30,
|
|
@@ -739,6 +753,8 @@ static int imx296_set_format(struct v4l2
|
|
format->height = crop->height;
|
|
}
|
|
|
|
+ imx296_setup_hblank(sensor, format->width);
|
|
+
|
|
format->code = sensor->mono ? MEDIA_BUS_FMT_Y10_1X10
|
|
: MEDIA_BUS_FMT_SBGGR10_1X10;
|
|
format->field = V4L2_FIELD_NONE;
|