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authorMatt Reimer <mreimer@vpop.net>2005-10-28 16:25:02 +0100
committerRussell King <rmk+kernel@arm.linux.org.uk>2005-10-28 16:25:02 +0100
commitd9e29649875df82828167dd45c802d942db863ba (patch)
tree8ce0d5d46bde4a92e212aabe18a3a86f508c8fd4 /drivers/serial
parent80a18573cea2e6d8e95abe4d42bfc5f97761999a (diff)
downloadop-kernel-dev-d9e29649875df82828167dd45c802d942db863ba.zip
op-kernel-dev-d9e29649875df82828167dd45c802d942db863ba.tar.gz
[ARM] 3029/1: Add HWUART support for PXA 255/26x
Patch from Matt Reimer Adds support for HWUART on PXA 255 / 26x. This patch originally came from http://svn.rungie.com/svn/gumstix-buildroot/trunk/sources/kernel-patches/000-gumstix-hwuart.patch and has been tweaked by me. Signed-off-by: Matt Reimer <mreimer@vpop.net> Signed-off-by: Nicolas Pitre <nico@cam.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'drivers/serial')
-rw-r--r--drivers/serial/pxa.c21
1 files changed, 20 insertions, 1 deletions
diff --git a/drivers/serial/pxa.c b/drivers/serial/pxa.c
index 90c2a86..005f027 100644
--- a/drivers/serial/pxa.c
+++ b/drivers/serial/pxa.c
@@ -358,6 +358,9 @@ static int serial_pxa_startup(struct uart_port *port)
unsigned long flags;
int retval;
+ if (port->line == 3) /* HWUART */
+ up->mcr |= UART_MCR_AFE;
+ else
up->mcr = 0;
/*
@@ -481,8 +484,10 @@ serial_pxa_set_termios(struct uart_port *port, struct termios *termios,
if ((up->port.uartclk / quot) < (2400 * 16))
fcr = UART_FCR_ENABLE_FIFO | UART_FCR_PXAR1;
- else
+ else if ((up->port.uartclk / quot) < (230400 * 16))
fcr = UART_FCR_ENABLE_FIFO | UART_FCR_PXAR8;
+ else
+ fcr = UART_FCR_ENABLE_FIFO | UART_FCR_PXAR32;
/*
* Ok, we're now changing the port state. Do it with
@@ -772,6 +777,20 @@ static struct uart_pxa_port serial_pxa_ports[] = {
.ops = &serial_pxa_pops,
.line = 2,
},
+ }, { /* HWUART */
+ .name = "HWUART",
+ .cken = CKEN4_HWUART,
+ .port = {
+ .type = PORT_PXA,
+ .iotype = UPIO_MEM,
+ .membase = (void *)&HWUART,
+ .mapbase = __PREG(HWUART),
+ .irq = IRQ_HWUART,
+ .uartclk = 921600 * 16,
+ .fifosize = 64,
+ .ops = &serial_pxa_pops,
+ .line = 3,
+ },
}
};
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