diff options
author | Ben Dooks <ben-linux@fluff.org> | 2008-12-18 14:52:04 +0000 |
---|---|---|
committer | Ben Dooks <ben-linux@fluff.org> | 2008-12-18 14:52:04 +0000 |
commit | 7f2754378f3522a42daafdbb9d2385f341008454 (patch) | |
tree | 7a6223f270cdf53067a70c2e86b2190d3577c23d /drivers/serial/samsung.c | |
parent | c6ad115876763e4f15055982ecb9579cb7abab5f (diff) | |
parent | a9c5d23ac724a3b908833cafbbbd49abe4741b86 (diff) |
Merge branch 'next-s3c64xx' into next-merged
Diffstat (limited to 'drivers/serial/samsung.c')
-rw-r--r-- | drivers/serial/samsung.c | 55 |
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); |