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media: i2c: ov9282: add strobe output enable v4l2 control

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Add V4L2_CID_FLASH_STROBE_OE enable/disable support using the
"strobe output enable" feature of the sensor.

All values are based on the OV9281 datasheet v1.53 (january 2019) and
tested using an ov9281 VisionComponents module.

Signed-off-by: Richard Leitner <richard.leitner@linux.dev>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Hans Verkuil <hverkuil+cisco@kernel.org>
This commit is contained in:
Richard Leitner 2025-12-09 23:44:40 +01:00 committed by Hans Verkuil
parent 47bc0d294d
commit f007ad65d7
1 changed files with 25 additions and 1 deletions
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26
drivers/media/i2c/ov9282.c
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@ -670,6 +670,23 @@ static int ov9282_set_ctrl_vflip(struct ov9282 *ov9282, int value)
current_val);
}
static int ov9282_set_ctrl_flash_strobe_oe(struct ov9282 *ov9282, bool enable)
{
u32 current_val;
int ret;
ret = ov9282_read_reg(ov9282, OV9282_REG_OUTPUT_ENABLE6, 1, &current_val);
if (ret)
return ret;
if (enable)
current_val |= OV9282_OUTPUT_ENABLE6_STROBE;
else
current_val &= ~OV9282_OUTPUT_ENABLE6_STROBE;
return ov9282_write_reg(ov9282, OV9282_REG_OUTPUT_ENABLE6, 1, current_val);
}
/**
* ov9282_set_ctrl() - Set subdevice control
* @ctrl: pointer to v4l2_ctrl structure
@ -736,6 +753,9 @@ static int ov9282_set_ctrl(struct v4l2_ctrl *ctrl)
ret = ov9282_write_reg(ov9282, OV9282_REG_TIMING_HTS, 2,
(ctrl->val + ov9282->cur_mode->width) >> 1);
break;
case V4L2_CID_FLASH_STROBE_OE:
ret = ov9282_set_ctrl_flash_strobe_oe(ov9282, ctrl->val);
break;
default:
dev_err(ov9282->dev, "Invalid control %d", ctrl->id);
ret = -EINVAL;
@ -1325,7 +1345,7 @@ static int ov9282_init_controls(struct ov9282 *ov9282)
u32 lpfr;
int ret;
ret = v4l2_ctrl_handler_init(ctrl_hdlr, 10);
ret = v4l2_ctrl_handler_init(ctrl_hdlr, 11);
if (ret)
return ret;
@ -1390,6 +1410,10 @@ static int ov9282_init_controls(struct ov9282 *ov9282)
OV9282_TIMING_HTS_MAX - mode->width,
1, hblank_min);
/* Flash/Strobe controls */
v4l2_ctrl_new_std(ctrl_hdlr, &ov9282_ctrl_ops,
V4L2_CID_FLASH_STROBE_OE, 0, 1, 1, 0);
ret = v4l2_fwnode_device_parse(ov9282->dev, &props);
if (!ret) {
/* Failure sets ctrl_hdlr->error, which we check afterwards anyway */