void exar7250_init(struct channel *sc)
{
	exar7250_write(sc, SBE_2T3E3_FRAMER_REG_OPERATING_MODE,
		       SBE_2T3E3_FRAMER_VAL_T3_CBIT |
		       SBE_2T3E3_FRAMER_VAL_INTERRUPT_ENABLE_RESET |
		       SBE_2T3E3_FRAMER_VAL_TIMING_ASYNCH_TXINCLK);

	exar7250_write(sc, SBE_2T3E3_FRAMER_REG_IO_CONTROL,
		       SBE_2T3E3_FRAMER_VAL_DISABLE_TX_LOSS_OF_CLOCK |
		       SBE_2T3E3_FRAMER_VAL_DISABLE_RX_LOSS_OF_CLOCK |
		       SBE_2T3E3_FRAMER_VAL_AMI_LINE_CODE |
		       SBE_2T3E3_FRAMER_VAL_RX_LINE_CLOCK_INVERT);

	exar7250_set_frame_type(sc, SBE_2T3E3_FRAME_TYPE_T3_CBIT);
}
void t3e3_set_frame_type(struct channel *sc, u32 mode)
{
	if (sc->p.frame_type == mode)
		return;

	if (sc->r.flags & SBE_2T3E3_FLAG_NETWORK_UP) {
		dev_err(&sc->pdev->dev, "SBE 2T3E3: changing frame type during active connection\n");
		return;
	}

	exar7300_set_frame_type(sc, mode);
	exar7250_set_frame_type(sc, mode);
	cpld_set_frame_type(sc, mode);

	sc->p.frame_type = mode;
}