[ARM] 3490/1: i.MX: move uart resources to board files

Patch from Sascha Hauer

This patch moves the i.MX uart resources and the gpio pin setup to the
board files. This allows the boards to decide how many internal uarts
are connected to the outside world and whether they use rts/cts or
not.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

1 files changed, 16 insertions, 24 deletions

diff --git a/drivers/serial/imx.c b/drivers/serial/imx.c
index c3b7a6673e9c..d202eb4f3848 100644
--- 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)
@@ -719,27 +725,6 @@ 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
@@ -932,7 +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;