kerver version:5.10.72
platform:DART-MX8M-PLUS
Key driver file path:
L5.10.72_2.2.1\kernel-source\drivers\media\i2c\ov5640.c
static int ov5640_s_ctrl(struct v4l2_ctrl *ctrl)
{
struct v4l2_subdev *sd = ctrl_to_sd(ctrl);
struct ov5640_dev *sensor = to_ov5640_dev(sd);
int ret;
/* v4l2_ctrl_lock() locks our own mutex */
/*
* If the device is not powered up by the host driver do
* not apply any controls to H/W at this time. Instead
* the controls will be restored right after power-up.
*/
if (sensor->power_count == 0)
return 0;
switch (ctrl->id) {
case V4L2_CID_AUTOGAIN:
ret = ov5640_set_ctrl_gain(sensor, ctrl->val);
break;
case V4L2_CID_EXPOSURE_AUTO:
ret = ov5640_set_ctrl_exposure(sensor, ctrl->val);
break;
case V4L2_CID_AUTO_WHITE_BALANCE:
ret = ov5640_set_ctrl_white_balance(sensor, ctrl->val);
break;
case V4L2_CID_HUE:
ret = ov5640_set_ctrl_hue(sensor, ctrl->val);
break;
case V4L2_CID_CONTRAST:
ret = ov5640_set_ctrl_contrast(sensor, ctrl->val);
break;
case V4L2_CID_SATURATION:
ret = ov5640_set_ctrl_saturation(sensor, ctrl->val);
break;
case V4L2_CID_TEST_PATTERN:
ret = ov5640_set_ctrl_test_pattern(sensor, ctrl->val);
break;
case V4L2_CID_POWER_LINE_FREQUENCY:
ret = ov5640_set_ctrl_light_freq(sensor, ctrl->val);
break;
case V4L2_CID_HFLIP:
ret = ov5640_set_ctrl_hflip(sensor, ctrl->val);
break;
case V4L2_CID_VFLIP:
ret = ov5640_set_ctrl_vflip(sensor, ctrl->val);
break;
default:
ret = -EINVAL;
break;
}
return ret;
}
L5.10.72_2.2.1\kernel-source\drivers\staging\media\imx\imx8-mipi-csi2-sam.c
L5.10.72_2.2.1\kernel-source\drivers\staging\media\imx\imx8-isi-cap.c
static int mxc_isi_s_ctrl(struct v4l2_ctrl *ctrl)
{
struct mxc_isi_cap_dev *isi_cap = ctrl_to_isi_cap(ctrl);
struct mxc_isi_dev *mxc_isi = mxc_isi_get_hostdata(isi_cap->pdev);
unsigned long flags;
dev_dbg(&isi_cap->pdev->dev, "%s\n", __func__);
if (ctrl->flags & V4L2_CTRL_FLAG_INACTIVE)
return 0;
spin_lock_irqsave(&mxc_isi->slock, flags);
switch (ctrl->id) {
case V4L2_CID_HFLIP:
if (ctrl->val < 0)
return -EINVAL;
mxc_isi->hflip = (ctrl->val > 0) ? 1 : 0;
break;
case V4L2_CID_VFLIP:
if (ctrl->val < 0)
return -EINVAL;
mxc_isi->vflip = (ctrl->val > 0) ? 1 : 0;
break;
case V4L2_CID_ALPHA_COMPONENT:
if (ctrl->val < 0 || ctrl->val > 255)
return -EINVAL;
mxc_isi->alpha = ctrl->val;
mxc_isi->alphaen = 1;
break;
default:
dev_err(&isi_cap->pdev->dev,
"%s: Not support %d CID\n", __func__, ctrl->id);
return -EINVAL;
}
spin_unlock_irqrestore(&mxc_isi->slock, flags);
return 0;
}
Message:
root@imx8mp-var-dart:~# v4l2-ctl --list-ctrls -d /dev/video1
User Controls
horizontal_flip 0x00980914 (bool) : default=0 value=0
vertical_flip 0x00980915 (bool) : default=0 value=0
alpha_component 0x00980929 (int) : min=0 max=255 step=1 default=0 value=0
There is s_ctrl control in OV5640, but it does not seem to be registered, so usr v4l2-ctrl -list-ctrls are not enumerated, what should I do to make these commands work?
