[SERIAL] OMAP1510 serial fix for 115200 baud

[linux-2.6-omap-h63xx.git] / drivers / serial / 8250.c

diff --git a/drivers/serial/8250.c b/drivers/serial/8250.c
index 0ae9ced00ed4db899c591528a848f68a51c144a8..a07442ffefbdff05080fbec613069bffcf4f5e49 100644 (file)
--- a/drivers/serial/8250.c
+++ b/drivers/serial/8250.c
@@ -1896,6 +1896,17 @@ serial8250_set_termios(struct uart_port *port, struct termios *termios,
                serial_outp(up, UART_EFR, efr);
        }
 
+#ifdef CONFIG_ARCH_OMAP15XX
+       /* Workaround to enable 115200 baud on OMAP1510 internal ports */
+       if (cpu_is_omap1510() && is_omap_port((unsigned int)up->port.membase)) {
+               if (baud == 115200) {
+                       quot = 1;
+                       serial_out(up, UART_OMAP_OSC_12M_SEL, 1);
+               } else
+                       serial_out(up, UART_OMAP_OSC_12M_SEL, 0);
+       }
+#endif
+
        if (up->capabilities & UART_NATSEMI) {
                /* Switch to bank 2 not bank 1, to avoid resetting EXCR2 */
                serial_outp(up, UART_LCR, 0xe0);
@@ -1949,6 +1960,8 @@ static int serial8250_request_std_resource(struct uart_8250_port *up)
        case UPIO_AU:
                size = 0x100000;
                /* fall thru */
+       case UPIO_TSI:
+       case UPIO_MEM32:
        case UPIO_MEM:
                if (!up->port.mapbase)
                        break;
@@ -1984,6 +1997,8 @@ static void serial8250_release_std_resource(struct uart_8250_port *up)
        case UPIO_AU:
                size = 0x100000;
                /* fall thru */
+       case UPIO_TSI:
+       case UPIO_MEM32:
        case UPIO_MEM:
                if (!up->port.mapbase)
                        break;
@@ -2007,17 +2022,15 @@ static int serial8250_request_rsa_resource(struct uart_8250_port *up)
 {
        unsigned long start = UART_RSA_BASE << up->port.regshift;
        unsigned int size = 8 << up->port.regshift;
-       int ret = 0;
+       int ret = -EINVAL;
 
        switch (up->port.iotype) {
-       case UPIO_MEM:
-               ret = -EINVAL;
-               break;
-
        case UPIO_HUB6:
        case UPIO_PORT:
                start += up->port.iobase;
-               if (!request_region(start, size, "serial-rsa"))
+               if (request_region(start, size, "serial-rsa"))
+                       ret = 0;
+               else
                        ret = -EBUSY;
                break;
        }
@@ -2031,9 +2044,6 @@ static void serial8250_release_rsa_resource(struct uart_8250_port *up)
        unsigned int size = 8 << up->port.regshift;
 
        switch (up->port.iotype) {
-       case UPIO_MEM:
-               break;
-
        case UPIO_HUB6:
        case UPIO_PORT:
                release_region(up->port.iobase + offset, size);
@@ -2397,7 +2407,6 @@ int __init early_serial_setup(struct uart_port *port)
 /**
  *     serial8250_suspend_port - suspend one serial port
  *     @line:  serial line number
- *      @level: the level of port suspension, as per uart_suspend_port
  *
  *     Suspend one serial port.
  */
@@ -2409,7 +2418,6 @@ void serial8250_suspend_port(int line)
 /**
  *     serial8250_resume_port - resume one serial port
  *     @line:  serial line number
- *      @level: the level of port resumption, as per uart_resume_port
  *
  *     Resume one serial port.
  */