ctrl_set_cfg_afe_gain
ctrl_set_cfg_afe_gain(struct drx_demod_instance *demod, struct drxj_cfg_afe_gain *afe_gain);
rc = ctrl_set_cfg_afe_gain(demod, &vsb_pga_cfg);
rc = ctrl_set_cfg_afe_gain(demod, &qam_pga_cfg);