Merge branch 'linux-2.6'

1 files changed, 205 insertions, 63 deletions

diff --git a/drivers/serial/imx.c b/drivers/serial/imx.c
index 04cc88cc528..e42faa4e428 100644
--- a/drivers/serial/imx.c
+++ b/drivers/serial/imx.c
@@ -46,6 +46,122 @@
 #include <asm/hardware.h>
 #include <asm/arch/imx-uart.h>
 
+/* Register definitions */
+#define URXD0 0x0  /* Receiver Register */
+#define URTX0 0x40 /* Transmitter Register */
+#define UCR1  0x80 /* Control Register 1 */
+#define UCR2  0x84 /* Control Register 2 */
+#define UCR3  0x88 /* Control Register 3 */
+#define UCR4  0x8c /* Control Register 4 */
+#define UFCR  0x90 /* FIFO Control Register */
+#define USR1  0x94 /* Status Register 1 */
+#define USR2  0x98 /* Status Register 2 */
+#define UESC  0x9c /* Escape Character Register */
+#define UTIM  0xa0 /* Escape Timer Register */
+#define UBIR  0xa4 /* BRM Incremental Register */
+#define UBMR  0xa8 /* BRM Modulator Register */
+#define UBRC  0xac /* Baud Rate Count Register */
+#define BIPR1 0xb0 /* Incremental Preset Register 1 */
+#define BIPR2 0xb4 /* Incremental Preset Register 2 */
+#define BIPR3 0xb8 /* Incremental Preset Register 3 */
+#define BIPR4 0xbc /* Incremental Preset Register 4 */
+#define BMPR1 0xc0 /* BRM Modulator Register 1 */
+#define BMPR2 0xc4 /* BRM Modulator Register 2 */
+#define BMPR3 0xc8 /* BRM Modulator Register 3 */
+#define BMPR4 0xcc /* BRM Modulator Register 4 */
+#define UTS   0xd0 /* UART Test Register */
+
+/* UART Control Register Bit Fields.*/
+#define  URXD_CHARRDY    (1<<15)
+#define  URXD_ERR        (1<<14)
+#define  URXD_OVRRUN     (1<<13)
+#define  URXD_FRMERR     (1<<12)
+#define  URXD_BRK        (1<<11)
+#define  URXD_PRERR      (1<<10)
+#define  UCR1_ADEN       (1<<15) /* Auto dectect interrupt */
+#define  UCR1_ADBR       (1<<14) /* Auto detect baud rate */
+#define  UCR1_TRDYEN     (1<<13) /* Transmitter ready interrupt enable */
+#define  UCR1_IDEN       (1<<12) /* Idle condition interrupt */
+#define  UCR1_RRDYEN     (1<<9)	 /* Recv ready interrupt enable */
+#define  UCR1_RDMAEN     (1<<8)	 /* Recv ready DMA enable */
+#define  UCR1_IREN       (1<<7)	 /* Infrared interface enable */
+#define  UCR1_TXMPTYEN   (1<<6)	 /* Transimitter empty interrupt enable */
+#define  UCR1_RTSDEN     (1<<5)	 /* RTS delta interrupt enable */
+#define  UCR1_SNDBRK     (1<<4)	 /* Send break */
+#define  UCR1_TDMAEN     (1<<3)	 /* Transmitter ready DMA enable */
+#define  UCR1_UARTCLKEN  (1<<2)	 /* UART clock enabled */
+#define  UCR1_DOZE       (1<<1)	 /* Doze */
+#define  UCR1_UARTEN     (1<<0)	 /* UART enabled */
+#define  UCR2_ESCI     	 (1<<15) /* Escape seq interrupt enable */
+#define  UCR2_IRTS  	 (1<<14) /* Ignore RTS pin */
+#define  UCR2_CTSC  	 (1<<13) /* CTS pin control */
+#define  UCR2_CTS        (1<<12) /* Clear to send */
+#define  UCR2_ESCEN      (1<<11) /* Escape enable */
+#define  UCR2_PREN       (1<<8)  /* Parity enable */
+#define  UCR2_PROE       (1<<7)  /* Parity odd/even */
+#define  UCR2_STPB       (1<<6)	 /* Stop */
+#define  UCR2_WS         (1<<5)	 /* Word size */
+#define  UCR2_RTSEN      (1<<4)	 /* Request to send interrupt enable */
+#define  UCR2_TXEN       (1<<2)	 /* Transmitter enabled */
+#define  UCR2_RXEN       (1<<1)	 /* Receiver enabled */
+#define  UCR2_SRST 	 (1<<0)	 /* SW reset */
+#define  UCR3_DTREN 	 (1<<13) /* DTR interrupt enable */
+#define  UCR3_PARERREN   (1<<12) /* Parity enable */
+#define  UCR3_FRAERREN   (1<<11) /* Frame error interrupt enable */
+#define  UCR3_DSR        (1<<10) /* Data set ready */
+#define  UCR3_DCD        (1<<9)  /* Data carrier detect */
+#define  UCR3_RI         (1<<8)  /* Ring indicator */
+#define  UCR3_TIMEOUTEN  (1<<7)  /* Timeout interrupt enable */
+#define  UCR3_RXDSEN	 (1<<6)  /* Receive status interrupt enable */
+#define  UCR3_AIRINTEN   (1<<5)  /* Async IR wake interrupt enable */
+#define  UCR3_AWAKEN	 (1<<4)  /* Async wake interrupt enable */
+#define  UCR3_REF25 	 (1<<3)  /* Ref freq 25 MHz */
+#define  UCR3_REF30 	 (1<<2)  /* Ref Freq 30 MHz */
+#define  UCR3_INVT  	 (1<<1)  /* Inverted Infrared transmission */
+#define  UCR3_BPEN  	 (1<<0)  /* Preset registers enable */
+#define  UCR4_CTSTL_32   (32<<10) /* CTS trigger level (32 chars) */
+#define  UCR4_INVR  	 (1<<9)  /* Inverted infrared reception */
+#define  UCR4_ENIRI 	 (1<<8)  /* Serial infrared interrupt enable */
+#define  UCR4_WKEN  	 (1<<7)  /* Wake interrupt enable */
+#define  UCR4_REF16 	 (1<<6)  /* Ref freq 16 MHz */
+#define  UCR4_IRSC  	 (1<<5)  /* IR special case */
+#define  UCR4_TCEN  	 (1<<3)  /* Transmit complete interrupt enable */
+#define  UCR4_BKEN  	 (1<<2)  /* Break condition interrupt enable */
+#define  UCR4_OREN  	 (1<<1)  /* Receiver overrun interrupt enable */
+#define  UCR4_DREN  	 (1<<0)  /* Recv data ready interrupt enable */
+#define  UFCR_RXTL_SHF   0       /* Receiver trigger level shift */
+#define  UFCR_RFDIV      (7<<7)  /* Reference freq divider mask */
+#define  UFCR_TXTL_SHF   10      /* Transmitter trigger level shift */
+#define  USR1_PARITYERR  (1<<15) /* Parity error interrupt flag */
+#define  USR1_RTSS  	 (1<<14) /* RTS pin status */
+#define  USR1_TRDY  	 (1<<13) /* Transmitter ready interrupt/dma flag */
+#define  USR1_RTSD  	 (1<<12) /* RTS delta */
+#define  USR1_ESCF  	 (1<<11) /* Escape seq interrupt flag */
+#define  USR1_FRAMERR    (1<<10) /* Frame error interrupt flag */
+#define  USR1_RRDY       (1<<9)	 /* Receiver ready interrupt/dma flag */
+#define  USR1_TIMEOUT    (1<<7)	 /* Receive timeout interrupt status */
+#define  USR1_RXDS  	 (1<<6)	 /* Receiver idle interrupt flag */
+#define  USR1_AIRINT	 (1<<5)	 /* Async IR wake interrupt flag */
+#define  USR1_AWAKE 	 (1<<4)	 /* Aysnc wake interrupt flag */
+#define  USR2_ADET  	 (1<<15) /* Auto baud rate detect complete */
+#define  USR2_TXFE  	 (1<<14) /* Transmit buffer FIFO empty */
+#define  USR2_DTRF  	 (1<<13) /* DTR edge interrupt flag */
+#define  USR2_IDLE  	 (1<<12) /* Idle condition */
+#define  USR2_IRINT 	 (1<<8)	 /* Serial infrared interrupt flag */
+#define  USR2_WAKE  	 (1<<7)	 /* Wake */
+#define  USR2_RTSF  	 (1<<4)	 /* RTS edge interrupt flag */
+#define  USR2_TXDC  	 (1<<3)	 /* Transmitter complete */
+#define  USR2_BRCD  	 (1<<2)	 /* Break condition */
+#define  USR2_ORE        (1<<1)	 /* Overrun error */
+#define  USR2_RDR        (1<<0)	 /* Recv data ready */
+#define  UTS_FRCPERR	 (1<<13) /* Force parity error */
+#define  UTS_LOOP        (1<<12) /* Loop tx and rx */
+#define  UTS_TXEMPTY	 (1<<6)	 /* TxFIFO empty */
+#define  UTS_RXEMPTY	 (1<<5)	 /* RxFIFO empty */
+#define  UTS_TXFULL 	 (1<<4)	 /* TxFIFO full */
+#define  UTS_RXFULL 	 (1<<3)	 /* RxFIFO full */
+#define  UTS_SOFTRST	 (1<<0)	 /* Software reset */
+
 /* We've been assigned a range on the "Low-density serial ports" major */
 #define SERIAL_IMX_MAJOR	204
 #define MINOR_START		41
@@ -128,7 +244,10 @@ static void imx_timeout(unsigned long data)
 static void imx_stop_tx(struct uart_port *port)
 {
 	struct imx_port *sport = (struct imx_port *)port;
-	UCR1((u32)sport->port.membase) &= ~UCR1_TXMPTYEN;
+	unsigned long temp;
+
+	temp = readl(sport->port.membase + UCR1);
+	writel(temp & ~UCR1_TXMPTYEN, sport->port.membase + UCR1);
 }
 
 /*
@@ -137,7 +256,10 @@ static void imx_stop_tx(struct uart_port *port)
 static void imx_stop_rx(struct uart_port *port)
 {
 	struct imx_port *sport = (struct imx_port *)port;
-	UCR2((u32)sport->port.membase) &= ~UCR2_RXEN;
+	unsigned long temp;
+
+	temp = readl(sport->port.membase + UCR2);
+	writel(temp &~ UCR2_RXEN, sport->port.membase + UCR2);
 }
 
 /*
@@ -154,10 +276,10 @@ static inline void imx_transmit_buffer(struct imx_port *sport)
 {
 	struct circ_buf *xmit = &sport->port.info->xmit;
 
-	while (!(UTS((u32)sport->port.membase) & UTS_TXFULL)) {
+	while (!(readl(sport->port.membase + UTS) & UTS_TXFULL)) {
 		/* send xmit->buf[xmit->tail]
 		 * out the port here */
-		URTX0((u32)sport->port.membase) = xmit->buf[xmit->tail];
+		writel(xmit->buf[xmit->tail], sport->port.membase + URTX0);
 		xmit->tail = (xmit->tail + 1) &
 		         (UART_XMIT_SIZE - 1);
 		sport->port.icount.tx++;
@@ -175,21 +297,24 @@ static inline void imx_transmit_buffer(struct imx_port *sport)
 static void imx_start_tx(struct uart_port *port)
 {
 	struct imx_port *sport = (struct imx_port *)port;
+	unsigned long temp;
 
-	UCR1((u32)sport->port.membase) |= UCR1_TXMPTYEN;
+	temp = readl(sport->port.membase + UCR1);
+	writel(temp | UCR1_TXMPTYEN, sport->port.membase + UCR1);
 
-	imx_transmit_buffer(sport);
+	if (readl(sport->port.membase + UTS) & UTS_TXEMPTY)
+		imx_transmit_buffer(sport);
 }
 
 static irqreturn_t imx_rtsint(int irq, void *dev_id)
 {
 	struct imx_port *sport = (struct imx_port *)dev_id;
-	unsigned int val = USR1((u32)sport->port.membase)&USR1_RTSS;
+	unsigned int val = readl(sport->port.membase + USR1) & USR1_RTSS;
 	unsigned long flags;
 
 	spin_lock_irqsave(&sport->port.lock, flags);
 
-	USR1((u32)sport->port.membase) = USR1_RTSD;
+	writel(USR1_RTSD, sport->port.membase + USR1);
 	uart_handle_cts_change(&sport->port, !!val);
 	wake_up_interruptible(&sport->port.info->delta_msr_wait);
 
@@ -207,7 +332,7 @@ static irqreturn_t imx_txint(int irq, void *dev_id)
 	if (sport->port.x_char)
 	{
 		/* Send next char */
-		URTX0((u32)sport->port.membase) = sport->port.x_char;
+		writel(sport->port.x_char, sport->port.membase + URTX0);
 		goto out;
 	}
 
@@ -231,17 +356,18 @@ static irqreturn_t imx_rxint(int irq, void *dev_id)
 	struct imx_port *sport = dev_id;
 	unsigned int rx,flg,ignored = 0;
 	struct tty_struct *tty = sport->port.info->tty;
-	unsigned long flags;
+	unsigned long flags, temp;
 
-	rx = URXD0((u32)sport->port.membase);
+	rx = readl(sport->port.membase + URXD0);
 	spin_lock_irqsave(&sport->port.lock,flags);
 
 	do {
 		flg = TTY_NORMAL;
 		sport->port.icount.rx++;
 
-		if( USR2((u32)sport->port.membase) & USR2_BRCD ) {
-			USR2((u32)sport->port.membase) |= USR2_BRCD;
+		temp = readl(sport->port.membase + USR2);
+		if( temp & USR2_BRCD ) {
+			writel(temp | USR2_BRCD, sport->port.membase + USR2);
 			if(uart_handle_break(&sport->port))
 				goto ignore_char;
 		}
@@ -257,7 +383,7 @@ static irqreturn_t imx_rxint(int irq, void *dev_id)
 		tty_insert_flip_char(tty, rx, flg);
 
 	ignore_char:
-		rx = URXD0((u32)sport->port.membase);
+		rx = readl(sport->port.membase + URXD0);
 	} while(rx & URXD_CHARRDY);
 
 out:
@@ -301,7 +427,7 @@ static unsigned int imx_tx_empty(struct uart_port *port)
 {
 	struct imx_port *sport = (struct imx_port *)port;
 
-	return USR2((u32)sport->port.membase) & USR2_TXDC ?  TIOCSER_TEMT : 0;
+	return (readl(sport->port.membase + USR2) & USR2_TXDC) ?  TIOCSER_TEMT : 0;
 }
 
 /*
@@ -312,10 +438,10 @@ static unsigned int imx_get_mctrl(struct uart_port *port)
         struct imx_port *sport = (struct imx_port *)port;
         unsigned int tmp = TIOCM_DSR | TIOCM_CAR;
 
-        if (USR1((u32)sport->port.membase) & USR1_RTSS)
+        if (readl(sport->port.membase + USR1) & USR1_RTSS)
                 tmp |= TIOCM_CTS;
 
-        if (UCR2((u32)sport->port.membase) & UCR2_CTS)
+        if (readl(sport->port.membase + UCR2) & UCR2_CTS)
                 tmp |= TIOCM_RTS;
 
         return tmp;
@@ -324,11 +450,14 @@ static unsigned int imx_get_mctrl(struct uart_port *port)
 static void imx_set_mctrl(struct uart_port *port, unsigned int mctrl)
 {
         struct imx_port *sport = (struct imx_port *)port;
+	unsigned long temp;
+
+	temp = readl(sport->port.membase + UCR2) & ~UCR2_CTS;
 
         if (mctrl & TIOCM_RTS)
-                UCR2((u32)sport->port.membase) |= UCR2_CTS;
-        else
-                UCR2((u32)sport->port.membase) &= ~UCR2_CTS;
+		temp |= UCR2_CTS;
+
+	writel(temp, sport->port.membase + UCR2);
 }
 
 /*
@@ -337,14 +466,16 @@ static void imx_set_mctrl(struct uart_port *port, unsigned int mctrl)
 static void imx_break_ctl(struct uart_port *port, int break_state)
 {
 	struct imx_port *sport = (struct imx_port *)port;
-	unsigned long flags;
+	unsigned long flags, temp;
 
 	spin_lock_irqsave(&sport->port.lock, flags);
 
+	temp = readl(sport->port.membase + UCR1) & ~UCR1_SNDBRK;
+
 	if ( break_state != 0 )
-		UCR1((u32)sport->port.membase) |= UCR1_SNDBRK;
-	else
-		UCR1((u32)sport->port.membase) &= ~UCR1_SNDBRK;
+		temp |= UCR1_SNDBRK;
+
+	writel(temp, sport->port.membase + UCR1);
 
 	spin_unlock_irqrestore(&sport->port.lock, flags);
 }
@@ -360,7 +491,7 @@ static int imx_setup_ufcr(struct imx_port *sport, unsigned int mode)
 	/* set receiver / transmitter trigger level.
 	 * RFDIV is set such way to satisfy requested uartclk value
 	 */
-	val = TXTL<<10 | RXTL;
+	val = TXTL << 10 | RXTL;
 	ufcr_rfdiv = (imx_get_perclk1() + sport->port.uartclk / 2) / sport->port.uartclk;
 
 	if(!ufcr_rfdiv)
@@ -373,7 +504,7 @@ static int imx_setup_ufcr(struct imx_port *sport, unsigned int mode)
 
 	val |= UFCR_RFDIV & (ufcr_rfdiv << 7);
 
-	UFCR((u32)sport->port.membase) = val;
+	writel(val, sport->port.membase + UFCR);
 
 	return 0;
 }
@@ -382,14 +513,15 @@ static int imx_startup(struct uart_port *port)
 {
 	struct imx_port *sport = (struct imx_port *)port;
 	int retval;
-	unsigned long flags;
+	unsigned long flags, temp;
 
 	imx_setup_ufcr(sport, 0);
 
 	/* disable the DREN bit (Data Ready interrupt enable) before
 	 * requesting IRQs
 	 */
-	UCR4((u32)sport->port.membase) &= ~UCR4_DREN;
+	temp = readl(sport->port.membase + UCR4);
+	writel(temp & ~UCR4_DREN, sport->port.membase + UCR4);
 
 	/*
 	 * Allocate the IRQ
@@ -411,12 +543,16 @@ static int imx_startup(struct uart_port *port)
 	/*
 	 * Finally, clear and enable interrupts
 	 */
+	writel(USR1_RTSD, sport->port.membase + USR1);
+
+	temp = readl(sport->port.membase + UCR1);
+	temp |= (UCR1_TXMPTYEN | UCR1_RRDYEN | UCR1_RTSDEN | UCR1_UARTEN);
+	writel(temp, sport->port.membase + UCR1);
 
-	USR1((u32)sport->port.membase) = USR1_RTSD;
-	UCR1((u32)sport->port.membase) |=
-	                 (UCR1_TXMPTYEN | UCR1_RRDYEN | UCR1_RTSDEN | UCR1_UARTEN);
+	temp = readl(sport->port.membase + UCR2);
+	temp |= (UCR2_RXEN | UCR2_TXEN);
+	writel(temp, sport->port.membase + UCR2);
 
-	UCR2((u32)sport->port.membase) |= (UCR2_RXEN | UCR2_TXEN);
 	/*
 	 * Enable modem status interrupts
 	 */
@@ -437,6 +573,7 @@ error_out1:
 static void imx_shutdown(struct uart_port *port)
 {
 	struct imx_port *sport = (struct imx_port *)port;
+	unsigned long temp;
 
 	/*
 	 * Stop our timer.
@@ -454,8 +591,9 @@ static void imx_shutdown(struct uart_port *port)
 	 * Disable all interrupts, port and break condition.
 	 */
 
-	UCR1((u32)sport->port.membase) &=
-	                 ~(UCR1_TXMPTYEN | UCR1_RRDYEN | UCR1_RTSDEN | UCR1_UARTEN);
+	temp = readl(sport->port.membase + UCR1);
+	temp &= ~(UCR1_TXMPTYEN | UCR1_RRDYEN | UCR1_RTSDEN | UCR1_UARTEN);
+	writel(temp, sport->port.membase + UCR1);
 }
 
 static void
@@ -548,18 +686,18 @@ imx_set_termios(struct uart_port *port, struct ktermios *termios,
 	/*
 	 * disable interrupts and drain transmitter
 	 */
-	old_ucr1 = UCR1((u32)sport->port.membase);
-	UCR1((u32)sport->port.membase) &= ~(UCR1_TXMPTYEN | UCR1_RRDYEN | UCR1_RTSDEN);
+	old_ucr1 = readl(sport->port.membase + UCR1);
+	writel(old_ucr1 & ~(UCR1_TXMPTYEN | UCR1_RRDYEN | UCR1_RTSDEN),
+			sport->port.membase + UCR1);
 
-	while ( !(USR2((u32)sport->port.membase) & USR2_TXDC))
+	while ( !(readl(sport->port.membase + USR2) & USR2_TXDC))
 		barrier();
 
 	/* then, disable everything */
-	old_txrxen = UCR2((u32)sport->port.membase) & ( UCR2_TXEN | UCR2_RXEN );
-	UCR2((u32)sport->port.membase) &= ~( UCR2_TXEN | UCR2_RXEN);
-
-	/* set the parity, stop bits and data size */
-	UCR2((u32)sport->port.membase) = ucr2;
+	old_txrxen = readl(sport->port.membase + UCR2);
+	writel(old_txrxen & ~( UCR2_TXEN | UCR2_RXEN),
+			sport->port.membase + UCR2);
+	old_txrxen &= (UCR2_TXEN | UCR2_RXEN);
 
 	/* set the baud rate. We assume uartclk = 16 MHz
 	 *
@@ -567,11 +705,13 @@ imx_set_termios(struct uart_port *port, struct ktermios *termios,
 	 * --------- = --------
 	 *  uartclk    UBMR - 1
 	 */
-	UBIR((u32)sport->port.membase) = (baud / 100) - 1;
-	UBMR((u32)sport->port.membase) = 10000 - 1;
+	writel((baud / 100) - 1, sport->port.membase + UBIR);
+	writel(10000 - 1, sport->port.membase + UBMR);
+
+	writel(old_ucr1, sport->port.membase + UCR1);
 
-	UCR1((u32)sport->port.membase) = old_ucr1;
-	UCR2((u32)sport->port.membase) |= old_txrxen;
+	/* set the parity, stop bits and data size */
+	writel(ucr2 | old_txrxen, sport->port.membase + UCR2);
 
 	if (UART_ENABLE_MS(&sport->port, termios->c_cflag))
 		imx_enable_ms(&sport->port);
@@ -730,9 +870,11 @@ static void __init imx_init_ports(void)
 static void imx_console_putchar(struct uart_port *port, int ch)
 {
 	struct imx_port *sport = (struct imx_port *)port;
-	while ((UTS((u32)sport->port.membase) & UTS_TXFULL))
+
+	while (readl(sport->port.membase + UTS) & UTS_TXFULL)
 		barrier();
-	URTX0((u32)sport->port.membase) = ch;
+
+	writel(ch, sport->port.membase + URTX0);
 }
 
 /*
@@ -747,13 +889,14 @@ imx_console_write(struct console *co, const char *s, unsigned int count)
 	/*
 	 *	First, save UCR1/2 and then disable interrupts
 	 */
-	old_ucr1 = UCR1((u32)sport->port.membase);
-	old_ucr2 = UCR2((u32)sport->port.membase);
+	old_ucr1 = readl(sport->port.membase + UCR1);
+	old_ucr2 = readl(sport->port.membase + UCR2);
 
-	UCR1((u32)sport->port.membase) =
-	                   (old_ucr1 | UCR1_UARTCLKEN | UCR1_UARTEN)
-	                   & ~(UCR1_TXMPTYEN | UCR1_RRDYEN | UCR1_RTSDEN);
-	UCR2((u32)sport->port.membase) = old_ucr2 | UCR2_TXEN;
+	writel((old_ucr1 | UCR1_UARTCLKEN | UCR1_UARTEN) &
+		~(UCR1_TXMPTYEN | UCR1_RRDYEN | UCR1_RTSDEN),
+		sport->port.membase + UCR1);
+
+	writel(old_ucr2 | UCR2_TXEN, sport->port.membase + UCR2);
 
 	uart_console_write(&sport->port, s, count, imx_console_putchar);
 
@@ -761,10 +904,10 @@ imx_console_write(struct console *co, const char *s, unsigned int count)
 	 *	Finally, wait for transmitter to become empty
 	 *	and restore UCR1/2
 	 */
-	while (!(USR2((u32)sport->port.membase) & USR2_TXDC));
+	while (!(readl(sport->port.membase + USR2) & USR2_TXDC));
 
-	UCR1((u32)sport->port.membase) = old_ucr1;
-	UCR2((u32)sport->port.membase) = old_ucr2;
+	writel(old_ucr1, sport->port.membase + UCR1);
+	writel(old_ucr2, sport->port.membase + UCR2);
 }
 
 /*
@@ -776,13 +919,13 @@ imx_console_get_options(struct imx_port *sport, int *baud,
 			   int *parity, int *bits)
 {
 
-	if ( UCR1((u32)sport->port.membase) | UCR1_UARTEN ) {
+	if ( readl(sport->port.membase + UCR1) | UCR1_UARTEN ) {
 		/* ok, the port was enabled */
 		unsigned int ucr2, ubir,ubmr, uartclk;
 		unsigned int baud_raw;
 		unsigned int ucfr_rfdiv;
 
-		ucr2 = UCR2((u32)sport->port.membase);
+		ucr2 = readl(sport->port.membase + UCR2);
 
 		*parity = 'n';
 		if (ucr2 & UCR2_PREN) {
@@ -797,11 +940,10 @@ imx_console_get_options(struct imx_port *sport, int *baud,
 		else
 			*bits = 7;
 
-		ubir = UBIR((u32)sport->port.membase) & 0xffff;
-		ubmr = UBMR((u32)sport->port.membase) & 0xffff;
-
+		ubir = readl(sport->port.membase + UBIR) & 0xffff;
+		ubmr = readl(sport->port.membase + UBMR) & 0xffff;
 
-		ucfr_rfdiv = (UFCR((u32)sport->port.membase) & UFCR_RFDIV) >> 7;
+		ucfr_rfdiv = (readl(sport->port.membase + UFCR) & UFCR_RFDIV) >> 7;
 		if (ucfr_rfdiv == 6)
 			ucfr_rfdiv = 7;
 		else