#include <linux/module.h>
#include <linux/ioport.h>
-#include <linux/device.h>
+#include <linux/platform_device.h>
#include <linux/init.h>
#include <linux/sysrq.h>
#include <linux/console.h>
#include <linux/serial_core.h>
#include <linux/serial.h>
#include <linux/delay.h>
+#include <linux/clk.h>
#include <asm/io.h>
#include <asm/irq.h>
#include <asm/hardware.h>
-#include <asm/hardware/clock.h>
#include <asm/arch/regs-serial.h>
#include <asm/arch/regs-gpio.h>
-#include <asm/mach-types.h>
-
/* structures */
struct s3c24xx_uart_info {
/* we can support 3 uarts, but not always use them */
+#ifdef CONFIG_CPU_S3C2400
+#define NR_PORTS (2)
+#else
#define NR_PORTS (3)
+#endif
/* port irq numbers */
/* translate a port to the device name */
-static inline char *s3c24xx_serial_portname(struct uart_port *port)
+static inline const char *s3c24xx_serial_portname(struct uart_port *port)
{
return to_platform_device(port->dev)->name;
}
spin_unlock_irqrestore(&port->lock, flags);
}
-static void
-s3c24xx_serial_stop_tx(struct uart_port *port, unsigned int tty_stop)
+static void s3c24xx_serial_stop_tx(struct uart_port *port)
{
if (tx_enabled(port)) {
disable_irq(TX_IRQ(port));
}
}
-static void
-s3c24xx_serial_start_tx(struct uart_port *port, unsigned int tty_start)
+static void s3c24xx_serial_start_tx(struct uart_port *port)
{
if (!tx_enabled(port)) {
if (port->flags & UPF_CONS_FLOW)
if (s3c24xx_serial_rx_fifocnt(ourport, ufstat) == 0)
break;
- if (tty->flip.count >= TTY_FLIPBUF_SIZE) {
- if (tty->low_latency)
- tty_flip_buffer_push(tty);
-
- /*
- * If this failed then we will throw away the
- * bytes but must do so to clear interrupts
- */
- }
-
uerstat = rd_regl(port, S3C2410_UERSTAT);
ch = rd_regb(port, S3C2410_URXH);
*/
if (uart_circ_empty(xmit) || uart_tx_stopped(port)) {
- s3c24xx_serial_stop_tx(port, 0);
+ s3c24xx_serial_stop_tx(port);
goto out;
}
uart_write_wakeup(port);
if (uart_circ_empty(xmit))
- s3c24xx_serial_stop_tx(port, 0);
+ s3c24xx_serial_stop_tx(port);
out:
return IRQ_HANDLED;
static int s3c24xx_serial_startup(struct uart_port *port)
{
struct s3c24xx_uart_port *ourport = to_ourport(port);
- unsigned long flags;
int ret;
dbg("s3c24xx_serial_startup: port=%p (%08lx,%p)\n",
port->mapbase, port->membase);
- local_irq_save(flags);
-
rx_enabled(port) = 1;
ret = request_irq(RX_IRQ(port),
/* the port reset code should have done the correct
* register setup for the port controls */
- local_irq_restore(flags);
return ret;
err:
s3c24xx_serial_shutdown(port);
- local_irq_restore(flags);
return ret;
}
{
struct s3c2410_uartcfg *cfg = s3c24xx_port_to_cfg(port);
struct s3c24xx_uart_port *ourport = to_ourport(port);
- struct s3c24xx_uart_clksrc *clksrc;
- struct clk *clk;
+ struct s3c24xx_uart_clksrc *clksrc = NULL;
+ struct clk *clk = NULL;
unsigned long flags;
unsigned int baud, quot;
unsigned int ulcon;
if (ourport->baudclk != NULL && !IS_ERR(ourport->baudclk)) {
clk_disable(ourport->baudclk);
- clk_unuse(ourport->baudclk);
ourport->baudclk = NULL;
}
- clk_use(clk);
clk_enable(clk);
ourport->clksrc = clksrc;
static int s3c24xx_serial_request_port(struct uart_port *port)
{
- char *name = s3c24xx_serial_portname(port);
+ const char *name = s3c24xx_serial_portname(port);
return request_mem_region(port->mapbase, MAP_SIZE, name) ? 0 : -EBUSY;
}
dbg("resource %p (%lx..%lx)\n", res, res->start, res->end);
port->mapbase = res->start;
- port->membase = S3C24XX_VA_UART + (res->start - S3C2410_PA_UART);
+ port->membase = S3C24XX_VA_UART + (res->start - S3C24XX_PA_UART);
port->irq = platform_get_irq(platdev, 0);
+ if (port->irq < 0)
+ port->irq = 0;
ourport->clk = clk_get(&platdev->dev, "uart");
- if (ourport->clk != NULL && !IS_ERR(ourport->clk))
- clk_use(ourport->clk);
-
dbg("port: map=%08x, mem=%08x, irq=%d, clock=%ld\n",
port->mapbase, port->membase, port->irq, port->uartclk);
static int probe_index = 0;
-int s3c24xx_serial_probe(struct device *_dev,
- struct s3c24xx_uart_info *info)
+static int s3c24xx_serial_probe(struct platform_device *dev,
+ struct s3c24xx_uart_info *info)
{
struct s3c24xx_uart_port *ourport;
- struct platform_device *dev = to_platform_device(_dev);
int ret;
- dbg("s3c24xx_serial_probe(%p, %p) %d\n", _dev, info, probe_index);
+ dbg("s3c24xx_serial_probe(%p, %p) %d\n", dev, info, probe_index);
ourport = &s3c24xx_serial_ports[probe_index];
probe_index++;
dbg("%s: adding port\n", __FUNCTION__);
uart_add_one_port(&s3c24xx_uart_drv, &ourport->port);
- dev_set_drvdata(_dev, &ourport->port);
+ platform_set_drvdata(dev, &ourport->port);
return 0;
return ret;
}
-int s3c24xx_serial_remove(struct device *_dev)
+static int s3c24xx_serial_remove(struct platform_device *dev)
{
- struct uart_port *port = s3c24xx_dev_to_port(_dev);
+ struct uart_port *port = s3c24xx_dev_to_port(&dev->dev);
if (port)
uart_remove_one_port(&s3c24xx_uart_drv, port);
#ifdef CONFIG_PM
-int s3c24xx_serial_suspend(struct device *dev, pm_message_t state, u32 level)
+static int s3c24xx_serial_suspend(struct platform_device *dev, pm_message_t state)
{
- struct uart_port *port = s3c24xx_dev_to_port(dev);
+ struct uart_port *port = s3c24xx_dev_to_port(&dev->dev);
- if (port && level == SUSPEND_DISABLE)
+ if (port)
uart_suspend_port(&s3c24xx_uart_drv, port);
return 0;
}
-int s3c24xx_serial_resume(struct device *dev, u32 level)
+static int s3c24xx_serial_resume(struct platform_device *dev)
{
- struct uart_port *port = s3c24xx_dev_to_port(dev);
+ struct uart_port *port = s3c24xx_dev_to_port(&dev->dev);
struct s3c24xx_uart_port *ourport = to_ourport(port);
- if (port && level == RESUME_ENABLE) {
+ if (port) {
clk_enable(ourport->clk);
s3c24xx_serial_resetport(port, s3c24xx_port_to_cfg(port));
clk_disable(ourport->clk);
#define s3c24xx_serial_resume NULL
#endif
-int s3c24xx_serial_init(struct device_driver *drv,
- struct s3c24xx_uart_info *info)
+static int s3c24xx_serial_init(struct platform_driver *drv,
+ struct s3c24xx_uart_info *info)
{
dbg("s3c24xx_serial_init(%p,%p)\n", drv, info);
- return driver_register(drv);
+ return platform_driver_register(drv);
}
.reset_port = s3c2400_serial_resetport,
};
-static int s3c2400_serial_probe(struct device *dev)
+static int s3c2400_serial_probe(struct platform_device *dev)
{
return s3c24xx_serial_probe(dev, &s3c2400_uart_inf);
}
-static struct device_driver s3c2400_serial_drv = {
- .name = "s3c2400-uart",
- .bus = &platform_bus_type,
+static struct platform_driver s3c2400_serial_drv = {
.probe = s3c2400_serial_probe,
.remove = s3c24xx_serial_remove,
.suspend = s3c24xx_serial_suspend,
.resume = s3c24xx_serial_resume,
+ .driver = {
+ .name = "s3c2400-uart",
+ .owner = THIS_MODULE,
+ },
};
static inline int s3c2400_serial_init(void)
static inline void s3c2400_serial_exit(void)
{
- driver_unregister(&s3c2400_serial_drv);
+ platform_driver_unregister(&s3c2400_serial_drv);
}
#define s3c2400_uart_inf_at &s3c2400_uart_inf
/* device management */
-static int s3c2410_serial_probe(struct device *dev)
+static int s3c2410_serial_probe(struct platform_device *dev)
{
return s3c24xx_serial_probe(dev, &s3c2410_uart_inf);
}
-static struct device_driver s3c2410_serial_drv = {
- .name = "s3c2410-uart",
- .bus = &platform_bus_type,
+static struct platform_driver s3c2410_serial_drv = {
.probe = s3c2410_serial_probe,
.remove = s3c24xx_serial_remove,
.suspend = s3c24xx_serial_suspend,
.resume = s3c24xx_serial_resume,
+ .driver = {
+ .name = "s3c2410-uart",
+ .owner = THIS_MODULE,
+ },
};
static inline int s3c2410_serial_init(void)
static inline void s3c2410_serial_exit(void)
{
- driver_unregister(&s3c2410_serial_drv);
+ platform_driver_unregister(&s3c2410_serial_drv);
}
#define s3c2410_uart_inf_at &s3c2410_uart_inf
/* device management */
-static int s3c2440_serial_probe(struct device *dev)
+static int s3c2440_serial_probe(struct platform_device *dev)
{
dbg("s3c2440_serial_probe: dev=%p\n", dev);
return s3c24xx_serial_probe(dev, &s3c2440_uart_inf);
}
-static struct device_driver s3c2440_serial_drv = {
- .name = "s3c2440-uart",
- .bus = &platform_bus_type,
+static struct platform_driver s3c2440_serial_drv = {
.probe = s3c2440_serial_probe,
.remove = s3c24xx_serial_remove,
.suspend = s3c24xx_serial_suspend,
.resume = s3c24xx_serial_resume,
+ .driver = {
+ .name = "s3c2440-uart",
+ .owner = THIS_MODULE,
+ },
};
static inline void s3c2440_serial_exit(void)
{
- driver_unregister(&s3c2440_serial_drv);
+ platform_driver_unregister(&s3c2440_serial_drv);
}
#define s3c2440_uart_inf_at &s3c2440_uart_inf
}
static void
-s3c24xx_serial_console_write(struct console *co, const char *s,
- unsigned int count)
+s3c24xx_serial_console_putchar(struct uart_port *port, int ch)
{
- int i;
unsigned int ufcon = rd_regl(cons_uart, S3C2410_UFCON);
+ while (!s3c24xx_serial_console_txrdy(port, ufcon))
+ barrier();
+ wr_regb(cons_uart, S3C2410_UTXH, ch);
+}
- for (i = 0; i < count; i++) {
- while (!s3c24xx_serial_console_txrdy(cons_uart, ufcon))
- barrier();
-
- wr_regb(cons_uart, S3C2410_UTXH, s[i]);
-
- if (s[i] == '\n') {
- while (!s3c24xx_serial_console_txrdy(cons_uart, ufcon))
- barrier();
-
- wr_regb(cons_uart, S3C2410_UTXH, '\r');
- }
- }
+static void
+s3c24xx_serial_console_write(struct console *co, const char *s,
+ unsigned int count)
+{
+ uart_console_write(cons_uart, s, count, s3c24xx_serial_console_putchar);
}
static void __init
git://git.onelab.eu / linux-2.6.git / blobdiff