IMX274_GAIN_CONST
gain_reg = (u32)IMX274_GAIN_CONST -
(IMX274_GAIN_CONST << IMX274_GAIN_SHIFT) / analog_gain;
if (IMX274_GAIN_CONST - gain_reg == 0) {
ctrl->val = (IMX274_GAIN_CONST << IMX274_GAIN_SHIFT)
/ (IMX274_GAIN_CONST - gain_reg) * digital_gain;