---

static int lpi2c_imx_pio_xfer(struct lpi2c_imx_struct *lpi2c_imx, struct i2c_msg *msg)
{
	int ret;
	reinit_completion(&lpi2c_imx->complete);
	if (msg->flags & I2C_M_RD)
		lpi2c_imx_read(lpi2c_imx, msg);
	else
		lpi2c_imx_write(lpi2c_imx, msg);
	ret = lpi2c_imx_pio_msg_complete(lpi2c_imx);
	if (ret)
		return ret;
	return 0;
}

static void lpi2c_imx_write_txfifo(struct lpi2c_imx_struct *lpi2c_imx)
{
	unsigned int data, txcnt;
	txcnt = readl(lpi2c_imx->base + LPI2C_MFSR) & 0xff;
	while (txcnt < lpi2c_imx->txfifosize) {
		if (lpi2c_imx->delivered == lpi2c_imx->msglen)
			break;
		data = lpi2c_imx->tx_buf[lpi2c_imx->delivered++];
		writel(data, lpi2c_imx->base + LPI2C_MTDR);
		txcnt++;
	}
	if (lpi2c_imx->delivered < lpi2c_imx->msglen)
		lpi2c_imx_intctrl(lpi2c_imx, MIER_TDIE | MIER_NDIE);
	else
		complete(&lpi2c_imx->complete);
}