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path: root/drivers/serial/8250.c
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Diffstat (limited to 'drivers/serial/8250.c')
-rw-r--r--drivers/serial/8250.c35
1 files changed, 22 insertions, 13 deletions
diff --git a/drivers/serial/8250.c b/drivers/serial/8250.c
index 10c2daab99a..cc2a205d423 100644
--- 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);
@@ -2222,9 +2232,10 @@ static inline void wait_for_xmitr(struct uart_8250_port *up, int bits)
/* Wait up to 1s for flow control if necessary */
if (up->port.flags & UPF_CONS_FLOW) {
tmout = 1000000;
- while (--tmout &&
- ((serial_in(up, UART_MSR) & UART_MSR_CTS) == 0))
+ while (!(serial_in(up, UART_MSR) & UART_MSR_CTS) && --tmout) {
udelay(1);
+ touch_nmi_watchdog();
+ }
}
}
@@ -2397,7 +2408,6 @@ 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 +2419,6 @@ 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.
*/