cleanup ifxmips and add support for both ttyS

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@11578 3c298f89-4303-0410-b956-a3cf2f4a3e73

1 files changed, 185 insertions, 186 deletions

diff --git a/target/linux/ifxmips/files/drivers/serial/ifxmips_asc.c b/target/linux/ifxmips/files/drivers/serial/ifxmips_asc.c
index d4219925f..63a4c2af9 100644
--- a/target/linux/ifxmips/files/drivers/serial/ifxmips_asc.c
+++ b/target/linux/ifxmips/files/drivers/serial/ifxmips_asc.c
@@ -1,6 +1,4 @@
 /*
- *  Driver for IFXMIPSASC serial ports
- *
  *  Based on drivers/char/serial.c, by Linus Torvalds, Theodore Ts'o.
  *
  * This program is free software; you can redistribute it and/or modify
@@ -60,56 +58,50 @@
 
 static void ifxmipsasc_tx_chars(struct uart_port *port);
 extern void prom_printf(const char * fmt, ...);
-static struct uart_port ifxmipsasc_port;
+static struct uart_port ifxmipsasc_port[2];
 static struct uart_driver ifxmipsasc_reg;
 static unsigned int uartclk = 0;
 extern unsigned int ifxmips_get_fpi_hz(void);
 
 static void
-ifxmipsasc_stop_tx (struct uart_port *port)
+ifxmipsasc_stop_tx(struct uart_port *port)
 {
-	/* fifo underrun shuts up after firing once */
 	return;
 }
 
 static void
-ifxmipsasc_start_tx (struct uart_port *port)
+ifxmipsasc_start_tx(struct uart_port *port)
 {
 	unsigned long flags;
-
 	local_irq_save(flags);
 	ifxmipsasc_tx_chars(port);
 	local_irq_restore(flags);
-
 	return;
 }
 
 static void
-ifxmipsasc_stop_rx (struct uart_port *port)
+ifxmipsasc_stop_rx(struct uart_port *port)
 {
-	/* clear the RX enable bit */
-	ifxmips_w32(ASCWHBSTATE_CLRREN, IFXMIPS_ASC1_WHBSTATE);
+	ifxmips_w32(ASCWHBSTATE_CLRREN, port->membase + IFXMIPS_ASC_WHBSTATE);
 }
 
 static void
-ifxmipsasc_enable_ms (struct uart_port *port)
+ifxmipsasc_enable_ms(struct uart_port *port)
 {
-	/* no modem signals */
-	return;
 }
 
 static void
-ifxmipsasc_rx_chars (struct uart_port *port)
+ifxmipsasc_rx_chars(struct uart_port *port)
 {
 	struct tty_struct *tty = port->info->tty;
 	unsigned int ch = 0, rsr = 0, fifocnt;
 
-	fifocnt = ifxmips_r32(IFXMIPS_ASC1_FSTAT) & ASCFSTAT_RXFFLMASK;
-	while (fifocnt--)
+	fifocnt = ifxmips_r32(port->membase + IFXMIPS_ASC_FSTAT) & ASCFSTAT_RXFFLMASK;
+	while(fifocnt--)
 	{
 		u8 flag = TTY_NORMAL;
-		ch = ifxmips_r32(IFXMIPS_ASC1_RBUF);
-		rsr = (ifxmips_r32(IFXMIPS_ASC1_STATE) & ASCSTATE_ANY) | UART_DUMMY_UER_RX;
+		ch = ifxmips_r32(port->membase + IFXMIPS_ASC_RBUF);
+		rsr = (ifxmips_r32(port->membase + IFXMIPS_ASC_STATE) & ASCSTATE_ANY) | UART_DUMMY_UER_RX;
 		tty_flip_buffer_push(tty);
 		port->icount.rx++;
 
@@ -117,31 +109,35 @@ ifxmipsasc_rx_chars (struct uart_port *port)
 		 * Note that the error handling code is
 		 * out of the main execution path
 		 */
-		if (rsr & ASCSTATE_ANY) {
-			if (rsr & ASCSTATE_PE) {
+		if(rsr & ASCSTATE_ANY)
+		{
+			if(rsr & ASCSTATE_PE)
+			{
 				port->icount.parity++;
-				ifxmips_w32(ifxmips_r32(IFXMIPS_ASC1_WHBSTATE) | ASCWHBSTATE_CLRPE, IFXMIPS_ASC1_WHBSTATE);
-			} else if (rsr & ASCSTATE_FE) {
+				ifxmips_w32(ifxmips_r32(port->membase + IFXMIPS_ASC_WHBSTATE) | ASCWHBSTATE_CLRPE, port->membase + IFXMIPS_ASC_WHBSTATE);
+			} else if(rsr & ASCSTATE_FE)
+			{
 				port->icount.frame++;
-				ifxmips_w32(ifxmips_r32(IFXMIPS_ASC1_WHBSTATE) | ASCWHBSTATE_CLRFE, IFXMIPS_ASC1_WHBSTATE);
+				ifxmips_w32(ifxmips_r32(port->membase + IFXMIPS_ASC_WHBSTATE) | ASCWHBSTATE_CLRFE, port->membase + IFXMIPS_ASC_WHBSTATE);
 			}
-			if (rsr & ASCSTATE_ROE) {
+			if(rsr & ASCSTATE_ROE)
+			{
 				port->icount.overrun++;
-				ifxmips_w32(ifxmips_r32(IFXMIPS_ASC1_WHBSTATE) | ASCWHBSTATE_CLRROE, IFXMIPS_ASC1_WHBSTATE);
+				ifxmips_w32(ifxmips_r32(port->membase + IFXMIPS_ASC_WHBSTATE) | ASCWHBSTATE_CLRROE, port->membase + IFXMIPS_ASC_WHBSTATE);
 			}
 
 			rsr &= port->read_status_mask;
 
-			if (rsr & ASCSTATE_PE)
+			if(rsr & ASCSTATE_PE)
 				flag = TTY_PARITY;
-			else if (rsr & ASCSTATE_FE)
+			else if(rsr & ASCSTATE_FE)
 				flag = TTY_FRAME;
 		}
 
-		if ((rsr & port->ignore_status_mask) == 0)
+		if((rsr & port->ignore_status_mask) == 0)
 			tty_insert_flip_char(tty, ch, flag);
 
-		if (rsr & ASCSTATE_ROE)
+		if(rsr & ASCSTATE_ROE)
 			/*
 			 * Overrun is special, since it's reported
 			 * immediately, and doesn't affect the current
@@ -149,189 +145,167 @@ ifxmipsasc_rx_chars (struct uart_port *port)
 			 */
 			tty_insert_flip_char(tty, 0, TTY_OVERRUN);
 	}
-	if (ch != 0)
+	if(ch != 0)
 		tty_flip_buffer_push(tty);
-
 	return;
 }
 
 
 static void
-ifxmipsasc_tx_chars (struct uart_port *port)
+ifxmipsasc_tx_chars(struct uart_port *port)
 {
 	struct circ_buf *xmit = &port->info->xmit;
 
-	if (uart_tx_stopped(port)) {
+	if(uart_tx_stopped(port))
+	{
 		ifxmipsasc_stop_tx(port);
 		return;
 	}
 
-	while(((ifxmips_r32(IFXMIPS_ASC1_FSTAT) & ASCFSTAT_TXFFLMASK)
+	while(((ifxmips_r32(port->membase + IFXMIPS_ASC_FSTAT) & ASCFSTAT_TXFFLMASK)
 			        >> ASCFSTAT_TXFFLOFF) != IFXMIPSASC_TXFIFO_FULL)
 	{
-		if (port->x_char) {
-			ifxmips_w32(port->x_char, IFXMIPS_ASC1_TBUF);
+		if(port->x_char)
+		{
+			ifxmips_w32(port->x_char, port->membase + IFXMIPS_ASC_TBUF);
 			port->icount.tx++;
 			port->x_char = 0;
 			continue;
 		}
 
-		if (uart_circ_empty(xmit))
+		if(uart_circ_empty(xmit))
 			break;
 
-		ifxmips_w32(port->info->xmit.buf[port->info->xmit.tail], IFXMIPS_ASC1_TBUF);
+		ifxmips_w32(port->info->xmit.buf[port->info->xmit.tail], port->membase + IFXMIPS_ASC_TBUF);
 		xmit->tail = (xmit->tail + 1) & (UART_XMIT_SIZE - 1);
 		port->icount.tx++;
 	}
 
-	if (uart_circ_chars_pending(xmit) < WAKEUP_CHARS)
+	if(uart_circ_chars_pending(xmit) < WAKEUP_CHARS)
 		uart_write_wakeup(port);
 }
 
 static irqreturn_t
-ifxmipsasc_tx_int (int irq, void *port)
+ifxmipsasc_tx_int(int irq, void *_port)
 {
-	ifxmips_w32(ASC_IRNCR_TIR, IFXMIPS_ASC1_IRNCR);
+	struct uart_port *port = (struct uart_port*) _port;
+	ifxmips_w32(ASC_IRNCR_TIR, port->membase + IFXMIPS_ASC_IRNCR);
 	ifxmipsasc_start_tx(port);
 	ifxmips_mask_and_ack_irq(irq);
-
 	return IRQ_HANDLED;
 }
 
 static irqreturn_t
-ifxmipsasc_er_int (int irq, void *port)
+ifxmipsasc_er_int(int irq, void *_port)
 {
+	struct uart_port *port = (struct uart_port*) _port;
 	/* clear any pending interrupts */
-	ifxmips_w32(ifxmips_r32(IFXMIPS_ASC1_WHBSTATE) | ASCWHBSTATE_CLRPE |
-			ASCWHBSTATE_CLRFE | ASCWHBSTATE_CLRROE, IFXMIPS_ASC1_WHBSTATE);
-
+	ifxmips_w32(ifxmips_r32(port->membase + IFXMIPS_ASC_WHBSTATE) | ASCWHBSTATE_CLRPE |
+			ASCWHBSTATE_CLRFE | ASCWHBSTATE_CLRROE, port->membase + IFXMIPS_ASC_WHBSTATE);
 	return IRQ_HANDLED;
 }
 
 static irqreturn_t
-ifxmipsasc_rx_int (int irq, void *port)
+ifxmipsasc_rx_int(int irq, void *_port)
 {
-	ifxmips_w32(ASC_IRNCR_RIR, IFXMIPS_ASC1_IRNCR);
-	ifxmipsasc_rx_chars((struct uart_port *) port);
+	struct uart_port *port = (struct uart_port*)_port;
+	ifxmips_w32(ASC_IRNCR_RIR, port->membase + IFXMIPS_ASC_IRNCR);
+	ifxmipsasc_rx_chars((struct uart_port*)port);
 	ifxmips_mask_and_ack_irq(irq);
-
 	return IRQ_HANDLED;
 }
 
 static unsigned int
-ifxmipsasc_tx_empty (struct uart_port *port)
+ifxmipsasc_tx_empty(struct uart_port *port)
 {
 	int status;
-
-	status = ifxmips_r32(IFXMIPS_ASC1_FSTAT) & ASCFSTAT_TXFFLMASK;
-
+	status = ifxmips_r32(port->membase + IFXMIPS_ASC_FSTAT) & ASCFSTAT_TXFFLMASK;
 	return status ? 0 : TIOCSER_TEMT;
 }
 
 static unsigned int
-ifxmipsasc_get_mctrl (struct uart_port *port)
+ifxmipsasc_get_mctrl(struct uart_port *port)
 {
 	return TIOCM_CTS | TIOCM_CAR | TIOCM_DSR;
 }
 
 static void
-ifxmipsasc_set_mctrl (struct uart_port *port, u_int mctrl)
-{
-	return;
-}
-
-static void
-ifxmipsasc_break_ctl (struct uart_port *port, int break_state)
+ifxmipsasc_set_mctrl(struct uart_port *port, u_int mctrl)
 {
-	return;
 }
 
 static void
-ifxmipsasc1_hw_init (void)
+ifxmipsasc_break_ctl(struct uart_port *port, int break_state)
 {
-	/* this setup was probably already done in ROM/u-boot  but we do it again*/
-	/* TODO: GPIO pins are multifunction */
-	ifxmips_w32(ifxmips_r32(IFXMIPS_ASC1_CLC) & ~IFXMIPS_ASC1_CLC_DISS, IFXMIPS_ASC1_CLC);
-	ifxmips_w32((ifxmips_r32(IFXMIPS_ASC1_CLC) & ~ASCCLC_RMCMASK) | (1 << ASCCLC_RMCOFFSET), IFXMIPS_ASC1_CLC);
-	ifxmips_w32(0, IFXMIPS_ASC1_PISEL);
-	ifxmips_w32(((IFXMIPSASC_TXFIFO_FL << ASCTXFCON_TXFITLOFF) &
-		ASCTXFCON_TXFITLMASK) | ASCTXFCON_TXFEN | ASCTXFCON_TXFFLU, IFXMIPS_ASC1_TXFCON);
-	ifxmips_w32(((IFXMIPSASC_RXFIFO_FL << ASCRXFCON_RXFITLOFF) &
-		ASCRXFCON_RXFITLMASK) | ASCRXFCON_RXFEN | ASCRXFCON_RXFFLU, IFXMIPS_ASC1_RXFCON);
-	wmb ();
-
-	/*framing, overrun, enable */
-	ifxmips_w32(ifxmips_r32(IFXMIPS_ASC1_CON) | ASCCON_M_8ASYNC | ASCCON_FEN | ASCCON_TOEN | ASCCON_ROEN,
-		IFXMIPS_ASC1_CON);
 }
 
 static int
-ifxmipsasc_startup (struct uart_port *port)
+ifxmipsasc_startup(struct uart_port *port)
 {
 	unsigned long flags;
 	int retval;
 
-	/* this assumes: CON.BRS = CON.FDE = 0 */
-	if (uartclk == 0)
+	if(uartclk == 0)
 		uartclk = ifxmips_get_fpi_hz();
 
-	ifxmipsasc_port.uartclk = uartclk;
+	port->uartclk = uartclk;
 
-	ifxmipsasc1_hw_init();
+	ifxmips_w32(ifxmips_r32(port->membase + IFXMIPS_ASC_CLC) & ~IFXMIPS_ASC_CLC_DISS, port->membase + IFXMIPS_ASC_CLC);
+	ifxmips_w32(((ifxmips_r32(port->membase + IFXMIPS_ASC_CLC) & ~ASCCLC_RMCMASK)) | (1 << ASCCLC_RMCOFFSET), port->membase + IFXMIPS_ASC_CLC);
+	ifxmips_w32(0, port->membase + IFXMIPS_ASC_PISEL);
+	ifxmips_w32(((IFXMIPSASC_TXFIFO_FL << ASCTXFCON_TXFITLOFF) & ASCTXFCON_TXFITLMASK) | ASCTXFCON_TXFEN | ASCTXFCON_TXFFLU, port->membase + IFXMIPS_ASC_TXFCON);
+	ifxmips_w32(((IFXMIPSASC_RXFIFO_FL << ASCRXFCON_RXFITLOFF) & ASCRXFCON_RXFITLMASK) | ASCRXFCON_RXFEN | ASCRXFCON_RXFFLU, port->membase + IFXMIPS_ASC_RXFCON);
+	wmb ();
+	ifxmips_w32(ifxmips_r32(port->membase + IFXMIPS_ASC_CON) | ASCCON_M_8ASYNC | ASCCON_FEN | ASCCON_TOEN | ASCCON_ROEN, port->membase + IFXMIPS_ASC_CON);
 
 	local_irq_save(flags);
 
-	retval = request_irq(IFXMIPSASC1_RIR, ifxmipsasc_rx_int, IRQF_DISABLED, "asc_rx", port);
-	if (retval){
+	retval = request_irq(port->irq, ifxmipsasc_rx_int, IRQF_DISABLED, "asc_rx", port);
+	if(retval)
+	{
 		printk("failed to request ifxmipsasc_rx_int\n");
 		return retval;
 	}
 
-	retval = request_irq(IFXMIPSASC1_TIR, ifxmipsasc_tx_int, IRQF_DISABLED, "asc_tx", port);
-	if (retval){
+	retval = request_irq(port->irq + 2, ifxmipsasc_tx_int, IRQF_DISABLED, "asc_tx", port);
+	if(retval)
+	{
 		printk("failed to request ifxmipsasc_tx_int\n");
 		goto err1;
 	}
 
-	retval = request_irq(IFXMIPSASC1_EIR, ifxmipsasc_er_int, IRQF_DISABLED, "asc_er", port);
-	if (retval){
+	retval = request_irq(port->irq + 3, ifxmipsasc_er_int, IRQF_DISABLED, "asc_er", port);
+	if(retval)
+	{
 		printk("failed to request ifxmipsasc_er_int\n");
 		goto err2;
 	}
 
-	ifxmips_w32(ASC_IRNREN_RX_BUF | ASC_IRNREN_TX_BUF | ASC_IRNREN_ERR | ASC_IRNREN_TX,
-		IFXMIPS_ASC1_IRNREN);
+	ifxmips_w32(ASC_IRNREN_RX_BUF | ASC_IRNREN_TX_BUF | ASC_IRNREN_ERR | ASC_IRNREN_TX, port->membase + IFXMIPS_ASC_IRNREN);
 
 	local_irq_restore(flags);
-
 	return 0;
 
 err2:
-	free_irq(IFXMIPSASC1_TIR, port);
-
+	free_irq(port->irq + 2, port);
 err1:
-	free_irq(IFXMIPSASC1_RIR, port);
+	free_irq(port->irq, port);
 	local_irq_restore(flags);
-
 	return retval;
 }
 
 static void
-ifxmipsasc_shutdown (struct uart_port *port)
+ifxmipsasc_shutdown(struct uart_port *port)
 {
-	free_irq(IFXMIPSASC1_RIR, port);
-	free_irq(IFXMIPSASC1_TIR, port);
-	free_irq(IFXMIPSASC1_EIR, port);
-	/*
-	 * disable the baudrate generator to disable the ASC
-	 */
-	ifxmips_w32(0, IFXMIPS_ASC1_CON);
-
-	/* flush and then disable the fifos */
-	ifxmips_w32(ifxmips_r32(IFXMIPS_ASC1_RXFCON) | ASCRXFCON_RXFFLU, IFXMIPS_ASC1_RXFCON);
-	ifxmips_w32(ifxmips_r32(IFXMIPS_ASC1_RXFCON) & ~ASCRXFCON_RXFEN, IFXMIPS_ASC1_RXFCON);
-	ifxmips_w32(ifxmips_r32(IFXMIPS_ASC1_TXFCON) | ASCTXFCON_TXFFLU, IFXMIPS_ASC1_TXFCON);
-	ifxmips_w32(ifxmips_r32(IFXMIPS_ASC1_TXFCON) & ~ASCTXFCON_TXFEN, IFXMIPS_ASC1_TXFCON);
+	free_irq(port->irq, port);
+	free_irq(port->irq + 2, port);
+	free_irq(port->irq + 3, port);
+
+	ifxmips_w32(0, port->membase + IFXMIPS_ASC_CON);
+	ifxmips_w32(ifxmips_r32(port->membase + IFXMIPS_ASC_RXFCON) | ASCRXFCON_RXFFLU, port->membase + IFXMIPS_ASC_RXFCON);
+	ifxmips_w32(ifxmips_r32(port->membase + IFXMIPS_ASC_RXFCON) & ~ASCRXFCON_RXFEN, port->membase + IFXMIPS_ASC_RXFCON);
+	ifxmips_w32(ifxmips_r32(port->membase + IFXMIPS_ASC_TXFCON) | ASCTXFCON_TXFFLU, port->membase + IFXMIPS_ASC_TXFCON);
+	ifxmips_w32(ifxmips_r32(port->membase + IFXMIPS_ASC_TXFCON) & ~ASCTXFCON_TXFEN, port->membase + IFXMIPS_ASC_TXFCON);
 }
 
 static void ifxmipsasc_set_termios(struct uart_port *port, struct ktermios *new, struct ktermios *old)
@@ -346,8 +320,8 @@ static void ifxmipsasc_set_termios(struct uart_port *port, struct ktermios *new,
 	cflag = new->c_cflag;
 	iflag = new->c_iflag;
 
-	/* byte size and parity */
-	switch (cflag & CSIZE) {
+	switch(cflag & CSIZE)
+	{
 	case CS7:
 		con = ASCCON_M_7ASYNC;
 		break;
@@ -359,34 +333,36 @@ static void ifxmipsasc_set_termios(struct uart_port *port, struct ktermios *new,
 		break;
 	}
 
-	if (cflag & CSTOPB)
+	if(cflag & CSTOPB)
 		con |= ASCCON_STP;
 
-	if (cflag & PARENB) {
-		if (!(cflag & PARODD))
+	if(cflag & PARENB)
+	{
+		if(!(cflag & PARODD))
 			con &= ~ASCCON_ODD;
 		else
 			con |= ASCCON_ODD;
 	}
 
 	port->read_status_mask = ASCSTATE_ROE;
-	if (iflag & INPCK)
+	if(iflag & INPCK)
 		port->read_status_mask |= ASCSTATE_FE | ASCSTATE_PE;
 
 	port->ignore_status_mask = 0;
-	if (iflag & IGNPAR)
+	if(iflag & IGNPAR)
 		port->ignore_status_mask |= ASCSTATE_FE | ASCSTATE_PE;
 
-	if (iflag & IGNBRK) {
+	if(iflag & IGNBRK)
+	{
 		/*
 		 * If we're ignoring parity and break indicators,
 		 * ignore overruns too (for real raw support).
 		 */
-		if (iflag & IGNPAR)
+		if(iflag & IGNPAR)
 			port->ignore_status_mask |= ASCSTATE_ROE;
 	}
 
-	if ((cflag & CREAD) == 0)
+	if((cflag & CREAD) == 0)
 		port->ignore_status_mask |= UART_DUMMY_UER_RX;
 
 	/* set error signals  - framing, parity  and overrun, enable receiver */
@@ -395,7 +371,7 @@ static void ifxmipsasc_set_termios(struct uart_port *port, struct ktermios *new,
 	local_irq_save(flags);
 
 	/* set up CON */
-	ifxmips_w32(ifxmips_r32(IFXMIPS_ASC1_CON) | con, IFXMIPS_ASC1_CON);
+	ifxmips_w32(ifxmips_r32(port->membase + IFXMIPS_ASC_CON) | con, port->membase + IFXMIPS_ASC_CON);
 
 	/* Set baud rate - take a divider of 2 into account */
     baud = uart_get_baud_rate(port, new, old, 0, port->uartclk / 16);
@@ -403,67 +379,68 @@ static void ifxmipsasc_set_termios(struct uart_port *port, struct ktermios *new,
 	quot = quot / 2 - 1;
 
 	/* disable the baudrate generator */
-	ifxmips_w32(ifxmips_r32(IFXMIPS_ASC1_CON) & ~ASCCON_R, IFXMIPS_ASC1_CON);
+	ifxmips_w32(ifxmips_r32(port->membase + IFXMIPS_ASC_CON) & ~ASCCON_R, port->membase + IFXMIPS_ASC_CON);
 
 	/* make sure the fractional divider is off */
-	ifxmips_w32(ifxmips_r32(IFXMIPS_ASC1_CON) & ~ASCCON_FDE, IFXMIPS_ASC1_CON);
+	ifxmips_w32(ifxmips_r32(port->membase + IFXMIPS_ASC_CON) & ~ASCCON_FDE, port->membase + IFXMIPS_ASC_CON);
 
 	/* set up to use divisor of 2 */
-	ifxmips_w32(ifxmips_r32(IFXMIPS_ASC1_CON) & ~ASCCON_BRS, IFXMIPS_ASC1_CON);
+	ifxmips_w32(ifxmips_r32(port->membase + IFXMIPS_ASC_CON) & ~ASCCON_BRS, port->membase + IFXMIPS_ASC_CON);
 
 	/* now we can write the new baudrate into the register */
-	ifxmips_w32(quot, IFXMIPS_ASC1_BG);
+	ifxmips_w32(quot, port->membase + IFXMIPS_ASC_BG);
 
 	/* turn the baudrate generator back on */
-	ifxmips_w32(ifxmips_r32(IFXMIPS_ASC1_CON) | ASCCON_R, IFXMIPS_ASC1_CON);
+	ifxmips_w32(ifxmips_r32(port->membase + IFXMIPS_ASC_CON) | ASCCON_R, port->membase + IFXMIPS_ASC_CON);
 
 	/* enable rx */
-	ifxmips_w32(ASCWHBSTATE_SETREN, IFXMIPS_ASC1_WHBSTATE);
+	ifxmips_w32(ASCWHBSTATE_SETREN, port->membase + IFXMIPS_ASC_WHBSTATE);
 
 	local_irq_restore(flags);
 }
 
 static const char*
-ifxmipsasc_type (struct uart_port *port)
+ifxmipsasc_type(struct uart_port *port)
 {
 	return port->type == PORT_IFXMIPSASC ? "IFXMIPSASC" : NULL;
 }
 
 static void
-ifxmipsasc_release_port (struct uart_port *port)
+ifxmipsasc_release_port(struct uart_port *port)
 {
-	return;
 }
 
 static int
-ifxmipsasc_request_port (struct uart_port *port)
+ifxmipsasc_request_port(struct uart_port *port)
 {
 	return 0;
 }
 
 static void
-ifxmipsasc_config_port (struct uart_port *port, int flags)
+ifxmipsasc_config_port(struct uart_port *port, int flags)
 {
-	if (flags & UART_CONFIG_TYPE) {
+	if(flags & UART_CONFIG_TYPE)
+	{
 		port->type = PORT_IFXMIPSASC;
 		ifxmipsasc_request_port(port);
 	}
 }
 
 static int
-ifxmipsasc_verify_port (struct uart_port *port, struct serial_struct *ser)
+ifxmipsasc_verify_port(struct uart_port *port, struct serial_struct *ser)
 {
 	int ret = 0;
-	if (ser->type != PORT_UNKNOWN && ser->type != PORT_IFXMIPSASC)
+	if(ser->type != PORT_UNKNOWN && ser->type != PORT_IFXMIPSASC)
 		ret = -EINVAL;
-	if (ser->irq < 0 || ser->irq >= NR_IRQS)
+	if(ser->irq < 0 || ser->irq >= NR_IRQS)
 		ret = -EINVAL;
-	if (ser->baud_base < 9600)
+	if(ser->baud_base < 9600)
 		ret = -EINVAL;
 	return ret;
 }
 
-static struct uart_ops ifxmipsasc_pops = {
+static struct uart_ops ifxmipsasc_pops =
+{
 	.tx_empty =		ifxmipsasc_tx_empty,
 	.set_mctrl =	ifxmipsasc_set_mctrl,
 	.get_mctrl =	ifxmipsasc_get_mctrl,
@@ -482,57 +459,67 @@ static struct uart_ops ifxmipsasc_pops = {
 	.verify_port =	ifxmipsasc_verify_port,
 };
 
-static struct uart_port ifxmipsasc_port = {
-		membase:	(void *)IFXMIPS_ASC1_BASE_ADDR,
-		mapbase:	IFXMIPS_ASC1_BASE_ADDR,
-		iotype:		SERIAL_IO_MEM,
-		irq:		IFXMIPSASC1_RIR,
-		uartclk:	0,
-		fifosize:	16,
-		unused:		{IFXMIPSASC1_TIR, IFXMIPSASC1_EIR},
-		type:		PORT_IFXMIPSASC,
-		ops:		&ifxmipsasc_pops,
-		flags:		ASYNC_BOOT_AUTOCONF,
+static struct uart_port ifxmipsasc_port[2] =
+{
+	{
+		membase:		(void *)IFXMIPS_ASC_BASE_ADDR,
+		mapbase:		IFXMIPS_ASC_BASE_ADDR,
+		iotype:			SERIAL_IO_MEM,
+		irq:			IFXMIPSASC_RIR(0),
+		uartclk:		0,
+		fifosize:		16,
+		type:			PORT_IFXMIPSASC,
+		ops:			&ifxmipsasc_pops,
+		flags:			ASYNC_BOOT_AUTOCONF,
+	}, {
+		membase:		(void *)(IFXMIPS_ASC_BASE_ADDR + IFXMIPS_ASC_BASE_DIFF),
+		mapbase:		IFXMIPS_ASC_BASE_ADDR + IFXMIPS_ASC_BASE_DIFF,
+		iotype:			SERIAL_IO_MEM,
+		irq:			IFXMIPSASC_RIR(1),
+		uartclk:		0,
+		fifosize:		16,
+		type:			PORT_IFXMIPSASC,
+		ops:			&ifxmipsasc_pops,
+		flags:			ASYNC_BOOT_AUTOCONF,
+	}
 };
 
 static void
-ifxmipsasc_console_write (struct console *co, const char *s, u_int count)
+ifxmipsasc_console_write(struct console *co, const char *s, u_int count)
 {
 	int i, fifocnt;
 	unsigned long flags;
 
 	local_irq_save(flags);
-	for (i = 0; i < count; i++)
+	for(i = 0; i < count; i++)
 	{
 		/* wait until the FIFO is not full */
 		do
 		{
-			fifocnt = (ifxmips_r32(IFXMIPS_ASC1_FSTAT) & ASCFSTAT_TXFFLMASK)
+			fifocnt = (ifxmips_r32((u32*)(IFXMIPS_ASC_BASE_ADDR + (co->index * IFXMIPS_ASC_BASE_DIFF) + IFXMIPS_ASC_FSTAT)) & ASCFSTAT_TXFFLMASK)
 			                >> ASCFSTAT_TXFFLOFF;
-		} while (fifocnt == IFXMIPSASC_TXFIFO_FULL);
+		}while(fifocnt == IFXMIPSASC_TXFIFO_FULL);
 
-		if (s[i] == '\0')
-		{
+		if(s[i] == '\0')
 			break;
-		}
 
-		if (s[i] == '\n')
+		if(s[i] == '\n')
 		{
-			ifxmips_w32('\r', IFXMIPS_ASC1_TBUF);
+			ifxmips_w32('\r', (u32*)(IFXMIPS_ASC_BASE_ADDR + (co->index * IFXMIPS_ASC_BASE_DIFF) + IFXMIPS_ASC_TBUF));
 			do
 			{
-				fifocnt = (ifxmips_r32(IFXMIPS_ASC1_FSTAT) & ASCFSTAT_TXFFLMASK)
+				fifocnt = (ifxmips_r32((u32*)(IFXMIPS_ASC_BASE_ADDR + (co->index * IFXMIPS_ASC_BASE_DIFF) + IFXMIPS_ASC_FSTAT)) & ASCFSTAT_TXFFLMASK)
 					>> ASCFSTAT_TXFFLOFF;
-			} while (fifocnt == IFXMIPSASC_TXFIFO_FULL);
+			} while(fifocnt == IFXMIPSASC_TXFIFO_FULL);
 		}
-		ifxmips_w32(s[i], IFXMIPS_ASC1_TBUF);
+		ifxmips_w32(s[i], (u32*)(IFXMIPS_ASC_BASE_ADDR + (co->index * IFXMIPS_ASC_BASE_DIFF) + IFXMIPS_ASC_TBUF));
 	}
 
 	local_irq_restore(flags);
 }
 
 static int __init
-ifxmipsasc_console_setup (struct console *co, char *options)
+ifxmipsasc_console_setup(struct console *co, char *options)
 {
 	struct uart_port *port;
 	int baud = 115200;
@@ -540,62 +527,74 @@ ifxmipsasc_console_setup (struct console *co, char *options)
 	int parity = 'n';
 	int flow = 'n';
 
-	if (uartclk == 0)
+	if(uartclk == 0)
 		uartclk = ifxmips_get_fpi_hz();
 	co->index = 0;
-	port = &ifxmipsasc_port;
-	ifxmipsasc_port.uartclk = uartclk;
-	ifxmipsasc_port.type = PORT_IFXMIPSASC;
+	port = &ifxmipsasc_port[co->index];
+	ifxmipsasc_port[co->index].uartclk = uartclk;
+	ifxmipsasc_port[co->index].type = PORT_IFXMIPSASC;
 
-	if (options){
+	if(options)
 		uart_parse_options(options, &baud, &parity, &bits, &flow);
-	}
 
 	return uart_set_options(port, co, baud, parity, bits, flow);
 }
 
-static struct uart_driver ifxmipsasc_reg;
-static struct console ifxmipsasc_console = {
-	name:		"ttyS",
-	write:		ifxmipsasc_console_write,
-	device:		uart_console_device,
-	setup:		ifxmipsasc_console_setup,
-	flags:		CON_PRINTBUFFER,
-	index:		-1,
-	data:		&ifxmipsasc_reg,
+static struct console ifxmipsasc_console[2] =
+{
+	{
+		name:		"ttyS",
+		write:		ifxmipsasc_console_write,
+		device:		uart_console_device,
+		setup:		ifxmipsasc_console_setup,
+		flags:		CON_PRINTBUFFER,
+		index:		0,
+		data:		&ifxmipsasc_reg,
+	}, {
+		name:		"ttyS",
+		write:		ifxmipsasc_console_write,
+		device:		uart_console_device,
+		setup:		ifxmipsasc_console_setup,
+		flags:		CON_PRINTBUFFER,
+		index:		1,
+		data:		&ifxmipsasc_reg,
+	}
 };
 
 static int __init
-ifxmipsasc_console_init (void)
+ifxmipsasc_console_init(void)
 {
-	register_console(&ifxmipsasc_console);
+	register_console(&ifxmipsasc_console[0]);
+	register_console(&ifxmipsasc_console[1]);
 	return 0;
 }
 console_initcall(ifxmipsasc_console_init);
 
-static struct uart_driver ifxmipsasc_reg = {
+static struct uart_driver ifxmipsasc_reg =
+{
 	.owner =			THIS_MODULE,
 	.driver_name =		"serial",
 	.dev_name =			"ttyS",
 	.major =			TTY_MAJOR,
 	.minor =			64,
-	.nr =				1,
-	.cons =				&ifxmipsasc_console,
+	.nr =				2,
+	.cons =				ifxmipsasc_console,
 };
 
 static int __init
-ifxmipsasc_init (void)
+ifxmipsasc_init(void)
 {
 	unsigned char res;
 
 	uart_register_driver(&ifxmipsasc_reg);
-	res = uart_add_one_port(&ifxmipsasc_reg, &ifxmipsasc_port);
+	res = uart_add_one_port(&ifxmipsasc_reg, &ifxmipsasc_port[0]);
+	res = uart_add_one_port(&ifxmipsasc_reg, &ifxmipsasc_port[1]);
 
 	return res;
 }
 
 static void __exit
-ifxmipsasc_exit (void)
+ifxmipsasc_exit(void)
 {
 	uart_unregister_driver(&ifxmipsasc_reg);
 }