Merge branch 'i915fb' of git://git.kernel.org/pub/scm/linux/kernel/git/airlied/intelf...

[powerpc.git] / drivers / serial / imx.c

diff --git a/drivers/serial/imx.c b/drivers/serial/imx.c
index 858048e..d202eb4 100644 (file)
--- a/drivers/serial/imx.c
+++ b/drivers/serial/imx.c
@@ -45,6 +45,7 @@
 #include <asm/io.h>
 #include <asm/irq.h>
 #include <asm/hardware.h>
+#include <asm/arch/imx-uart.h>
 
 /* We've been assigned a range on the "Low-density serial ports" major */
 #define SERIAL_IMX_MAJOR       204
@@ -73,7 +74,8 @@ struct imx_port {
        struct uart_port        port;
        struct timer_list       timer;
        unsigned int            old_status;
-       int txirq,rxirq,rtsirq;
+       int                     txirq,rxirq,rtsirq;
+       int                     have_rtscts:1;
 };
 
 /*
@@ -491,8 +493,12 @@ imx_set_termios(struct uart_port *port, struct termios *termios,
                ucr2 = UCR2_SRST | UCR2_IRTS;
 
        if (termios->c_cflag & CRTSCTS) {
-               ucr2 &= ~UCR2_IRTS;
-               ucr2 |= UCR2_CTSC;
+               if( sport->have_rtscts ) {
+                       ucr2 &= ~UCR2_IRTS;
+                       ucr2 |= UCR2_CTSC;
+               } else {
+                       termios->c_cflag &= ~CRTSCTS;
+               }
        }
 
        if (termios->c_cflag & CSTOPB)
@@ -668,7 +674,7 @@ static struct imx_port imx_ports[] = {
        .rtsirq = UART1_MINT_RTS,
        .port   = {
                .type           = PORT_IMX,
-               .iotype         = SERIAL_IO_MEM,
+               .iotype         = UPIO_MEM,
                .membase        = (void *)IMX_UART1_BASE,
                .mapbase        = IMX_UART1_BASE, /* FIXME */
                .irq            = UART1_MINT_RX,
@@ -684,7 +690,7 @@ static struct imx_port imx_ports[] = {
        .rtsirq = UART2_MINT_RTS,
        .port   = {
                .type           = PORT_IMX,
-               .iotype         = SERIAL_IO_MEM,
+               .iotype         = UPIO_MEM,
                .membase        = (void *)IMX_UART2_BASE,
                .mapbase        = IMX_UART2_BASE, /* FIXME */
                .irq            = UART2_MINT_RX,
@@ -719,30 +725,16 @@ static void __init imx_init_ports(void)
                imx_ports[i].timer.function = imx_timeout;
                imx_ports[i].timer.data     = (unsigned long)&imx_ports[i];
        }
-
-       imx_gpio_mode(PC9_PF_UART1_CTS);
-       imx_gpio_mode(PC10_PF_UART1_RTS);
-       imx_gpio_mode(PC11_PF_UART1_TXD);
-       imx_gpio_mode(PC12_PF_UART1_RXD);
-       imx_gpio_mode(PB28_PF_UART2_CTS);
-       imx_gpio_mode(PB29_PF_UART2_RTS);
-
-       imx_gpio_mode(PB30_PF_UART2_TXD);
-       imx_gpio_mode(PB31_PF_UART2_RXD);
-
-#if 0 /* We don't need these, on the mx1 the _modem_ side of the uart
-       * is implemented.
-       */
-       imx_gpio_mode(PD7_AF_UART2_DTR);
-       imx_gpio_mode(PD8_AF_UART2_DCD);
-       imx_gpio_mode(PD9_AF_UART2_RI);
-       imx_gpio_mode(PD10_AF_UART2_DSR);
-#endif
-
-
 }
 
 #ifdef CONFIG_SERIAL_IMX_CONSOLE
+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))
+               barrier();
+       URTX0((u32)sport->port.membase) = ch;
+}
 
 /*
  * Interrupts are disabled on entering
@@ -751,7 +743,7 @@ static void
 imx_console_write(struct console *co, const char *s, unsigned int count)
 {
        struct imx_port *sport = &imx_ports[co->index];
-       unsigned int old_ucr1, old_ucr2, i;
+       unsigned int old_ucr1, old_ucr2;
 
        /*
         *      First, save UCR1/2 and then disable interrupts
@@ -764,22 +756,7 @@ imx_console_write(struct console *co, const char *s, unsigned int count)
                           & ~(UCR1_TXMPTYEN | UCR1_RRDYEN | UCR1_RTSDEN);
        UCR2((u32)sport->port.membase) = old_ucr2 | UCR2_TXEN;
 
-       /*
-        *      Now, do each character
-        */
-       for (i = 0; i < count; i++) {
-
-               while ((UTS((u32)sport->port.membase) & UTS_TXFULL))
-                       barrier();
-
-               URTX0((u32)sport->port.membase) = s[i];
-
-               if (s[i] == '\n') {
-                       while ((UTS((u32)sport->port.membase) & UTS_TXFULL))
-                               barrier();
-                       URTX0((u32)sport->port.membase) = '\r';
-               }
-       }
+       uart_console_write(&sport->port, s, count, imx_console_putchar);
 
        /*
         *      Finally, wait for transmitter to become empty
@@ -940,7 +917,14 @@ static int serial_imx_resume(struct platform_device *dev)
 
 static int serial_imx_probe(struct platform_device *dev)
 {
+       struct imxuart_platform_data *pdata;
+
        imx_ports[dev->id].port.dev = &dev->dev;
+
+       pdata = (struct imxuart_platform_data *)dev->dev.platform_data;
+       if(pdata && (pdata->flags & IMXUART_HAVE_RTSCTS))
+               imx_ports[dev->id].have_rtscts = 1;
+
        uart_add_one_port(&imx_reg, &imx_ports[dev->id].port);
        platform_set_drvdata(dev, &imx_ports[dev->id]);
        return 0;