[ARM] S3C: Update serial driver IRQ handling

The S3C64XX code changes the order of the serial
interrupts, so change the registration process to
pickup the extra IRQ resources.

Signed-off-by: Ben Dooks <ben-linux@fluff.org>

2 files changed, 29 insertions, 19 deletions

diff --git a/drivers/serial/samsung.c b/drivers/serial/samsung.c
index 44fc38afa228..ba2e8685f9f5 100644
--- a/drivers/serial/samsung.c
+++ b/drivers/serial/samsung.c
@@ -67,11 +67,6 @@
 #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;
         }
 
@@ -1041,13 +1040,21 @@ static int s3c24xx_serial_init_port(struct s3c24xx_uart_port *ourport,
         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);
diff --git a/drivers/serial/samsung.h b/drivers/serial/samsung.h
index be263423205d..571d6b90d206 100644
--- a/drivers/serial/samsung.h
+++ b/drivers/serial/samsung.h
@@ -36,6 +36,9 @@ struct s3c24xx_uart_port {
         unsigned int                    pm_level;
         unsigned long                   baudclk_rate;
 
+        unsigned int                    rx_irq;
+        unsigned int                    tx_irq;
+
         struct s3c24xx_uart_info        *info;
         struct s3c24xx_uart_clksrc      *clksrc;
         struct clk                      *clk;