#define OV8865_EXPOSURE_CTRL_L_REG 0x3502
#define OV8865_EXPOSURE_CTRL_L(v) ((v) & GENMASK(7, 0))
#define OV8865_EXPOSURE_GAIN_MANUAL_REG 0x3503
+#define OV8865_INTEGRATION_TIME_MARGIN 8
#define OV8865_GAIN_CTRL_H_REG 0x3508
#define OV8865_GAIN_CTRL_H(v) (((v) & GENMASK(12, 8)) >> 8)
struct v4l2_ctrl *pixel_rate;
struct v4l2_ctrl *hblank;
struct v4l2_ctrl *vblank;
+ struct v4l2_ctrl *exposure;
struct v4l2_ctrl_handler handler;
};
unsigned int index;
int ret;
+ /* If VBLANK is altered we need to update exposure to compensate */
+ if (ctrl->id == V4L2_CID_VBLANK) {
+ int exposure_max;
+
+ exposure_max = sensor->state.mode->output_size_y + ctrl->val -
+ OV8865_INTEGRATION_TIME_MARGIN;
+ __v4l2_ctrl_modify_range(sensor->ctrls.exposure,
+ sensor->ctrls.exposure->minimum,
+ exposure_max,
+ sensor->ctrls.exposure->step,
+ min(sensor->ctrls.exposure->val,
+ exposure_max));
+ }
+
/* Wait for the sensor to be on before setting controls. */
if (pm_runtime_suspended(sensor->dev))
return 0;
/* Exposure */
- v4l2_ctrl_new_std(handler, ops, V4L2_CID_EXPOSURE, 16, 1048575, 16,
- 512);
+ ctrls->exposure = v4l2_ctrl_new_std(handler, ops, V4L2_CID_EXPOSURE, 16,
+ 1048575, 16, 512);
/* Gain */
u32 mbus_code = 0;
unsigned int hblank;
unsigned int index;
+ int exposure_max;
int ret = 0;
mutex_lock(&sensor->mutex);
__v4l2_ctrl_modify_range(sensor->ctrls.hblank, hblank, hblank, 1,
hblank);
+ exposure_max = mode->vts - OV8865_INTEGRATION_TIME_MARGIN;
+ __v4l2_ctrl_modify_range(sensor->ctrls.exposure,
+ sensor->ctrls.exposure->minimum, exposure_max,
+ sensor->ctrls.exposure->step,
+ min(sensor->ctrls.exposure->val,
+ exposure_max));
+
complete:
mutex_unlock(&sensor->mutex);