IMX274_MAX_DIGITAL_GAIN
if (gain > IMX274_MAX_DIGITAL_GAIN * IMX274_MAX_ANALOG_GAIN)
gain = IMX274_MAX_DIGITAL_GAIN * IMX274_MAX_ANALOG_GAIN;
digital_gain = IMX274_MAX_DIGITAL_GAIN;
IMX274_MAX_DIGITAL_GAIN * IMX274_MAX_ANALOG_GAIN, 1,