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path: root/drivers/serial/samsung.c
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Diffstat (limited to 'drivers/serial/samsung.c')
-rw-r--r--drivers/serial/samsung.c55
1 files changed, 32 insertions, 23 deletions
diff --git a/drivers/serial/samsung.c b/drivers/serial/samsung.c
index ebeda832c8a..ba2e8685f9f 100644
--- a/drivers/serial/samsung.c
+++ b/drivers/serial/samsung.c
@@ -47,9 +47,9 @@
#include <asm/irq.h>
#include <mach/hardware.h>
+#include <mach/map.h>
#include <plat/regs-serial.h>
-#include <mach/regs-gpio.h>
#include "samsung.h"
@@ -61,17 +61,12 @@
/* we can support 3 uarts, but not always use them */
-#ifdef CONFIG_CPU_S3C2400
+#if defined(CONFIG_CPU_S3C2400) || defined(CONFIG_CPU_S3C24A0)
#define NR_PORTS (2)
#else
#define NR_PORTS (3)
#endif
-/* port irq numbers */
-
-#define TX_IRQ(port) ((port)->irq + 1)
-#define RX_IRQ(port) ((port)->irq)
-
/* macros to change one thing to another */
#define tx_enabled(port) ((port)->unused[0])
@@ -137,8 +132,10 @@ static void s3c24xx_serial_rx_disable(struct uart_port *port)
static void s3c24xx_serial_stop_tx(struct uart_port *port)
{
+ struct s3c24xx_uart_port *ourport = to_ourport(port);
+
if (tx_enabled(port)) {
- disable_irq(TX_IRQ(port));
+ disable_irq(ourport->tx_irq);
tx_enabled(port) = 0;
if (port->flags & UPF_CONS_FLOW)
s3c24xx_serial_rx_enable(port);
@@ -147,11 +144,13 @@ static void s3c24xx_serial_stop_tx(struct uart_port *port)
static void s3c24xx_serial_start_tx(struct uart_port *port)
{
+ struct s3c24xx_uart_port *ourport = to_ourport(port);
+
if (!tx_enabled(port)) {
if (port->flags & UPF_CONS_FLOW)
s3c24xx_serial_rx_disable(port);
- enable_irq(TX_IRQ(port));
+ enable_irq(ourport->tx_irq);
tx_enabled(port) = 1;
}
}
@@ -159,9 +158,11 @@ static void s3c24xx_serial_start_tx(struct uart_port *port)
static void s3c24xx_serial_stop_rx(struct uart_port *port)
{
+ struct s3c24xx_uart_port *ourport = to_ourport(port);
+
if (rx_enabled(port)) {
dbg("s3c24xx_serial_stop_rx: port=%p\n", port);
- disable_irq(RX_IRQ(port));
+ disable_irq(ourport->rx_irq);
rx_enabled(port) = 0;
}
}
@@ -385,13 +386,13 @@ static void s3c24xx_serial_shutdown(struct uart_port *port)
struct s3c24xx_uart_port *ourport = to_ourport(port);
if (ourport->tx_claimed) {
- free_irq(TX_IRQ(port), ourport);
+ free_irq(ourport->tx_irq, ourport);
tx_enabled(port) = 0;
ourport->tx_claimed = 0;
}
if (ourport->rx_claimed) {
- free_irq(RX_IRQ(port), ourport);
+ free_irq(ourport->rx_irq, ourport);
ourport->rx_claimed = 0;
rx_enabled(port) = 0;
}
@@ -408,12 +409,11 @@ static int s3c24xx_serial_startup(struct uart_port *port)
rx_enabled(port) = 1;
- ret = request_irq(RX_IRQ(port),
- s3c24xx_serial_rx_chars, 0,
+ ret = request_irq(ourport->rx_irq, s3c24xx_serial_rx_chars, 0,
s3c24xx_serial_portname(port), ourport);
if (ret != 0) {
- printk(KERN_ERR "cannot get irq %d\n", RX_IRQ(port));
+ printk(KERN_ERR "cannot get irq %d\n", ourport->rx_irq);
return ret;
}
@@ -423,12 +423,11 @@ static int s3c24xx_serial_startup(struct uart_port *port)
tx_enabled(port) = 1;
- ret = request_irq(TX_IRQ(port),
- s3c24xx_serial_tx_chars, 0,
+ ret = request_irq(ourport->tx_irq, s3c24xx_serial_tx_chars, 0,
s3c24xx_serial_portname(port), ourport);
if (ret) {
- printk(KERN_ERR "cannot get irq %d\n", TX_IRQ(port));
+ printk(KERN_ERR "cannot get irq %d\n", ourport->tx_irq);
goto err;
}
@@ -756,6 +755,8 @@ static const char *s3c24xx_serial_type(struct uart_port *port)
return "S3C2440";
case PORT_S3C2412:
return "S3C2412";
+ case PORT_S3C6400:
+ return "S3C6400/10";
default:
return NULL;
}
@@ -1034,18 +1035,26 @@ static int s3c24xx_serial_init_port(struct s3c24xx_uart_port *ourport,
dbg("resource %p (%lx..%lx)\n", res, res->start, res->end);
- port->mapbase = res->start;
- port->membase = S3C24XX_VA_UART + (res->start - S3C24XX_PA_UART);
+ port->mapbase = res->start;
+ port->membase = S3C_VA_UART + res->start - (S3C_PA_UART & 0xfff00000);
ret = platform_get_irq(platdev, 0);
if (ret < 0)
port->irq = 0;
- else
+ else {
port->irq = ret;
+ ourport->rx_irq = ret;
+ ourport->tx_irq = ret + 1;
+ }
+
+ ret = platform_get_irq(platdev, 1);
+ if (ret > 0)
+ ourport->tx_irq = ret;
ourport->clk = clk_get(&platdev->dev, "uart");
- dbg("port: map=%08x, mem=%08x, irq=%d, clock=%ld\n",
- port->mapbase, port->membase, port->irq, port->uartclk);
+ dbg("port: map=%08x, mem=%08x, irq=%d (%d,%d), clock=%ld\n",
+ port->mapbase, port->membase, port->irq,
+ ourport->rx_irq, ourport->tx_irq, port->uartclk);
/* reset the fifos (and setup the uart) */
s3c24xx_serial_resetport(port, cfg);