Commit b73c289c authored by Ben Dooks's avatar Ben Dooks

[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: default avatarBen Dooks <ben-linux@fluff.org>
parent b690ace5
......@@ -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);
......
......@@ -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;
......
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