Merge mulgrave-w:git/scsi-misc-2.6

[pandora-kernel.git] / drivers / serial / s3c2410.c

diff --git a/drivers/serial/s3c2410.c b/drivers/serial/s3c2410.c
index 53c2465..95738a1 100644 (file)
--- a/drivers/serial/s3c2410.c
+++ b/drivers/serial/s3c2410.c
@@ -55,7 +55,6 @@
  * BJD, 04-Nov-2004
 */
 
-#include <linux/config.h>
 
 #if defined(CONFIG_SERIAL_S3C2410_CONSOLE) && defined(CONFIG_MAGIC_SYSRQ)
 #define SUPPORT_SYSRQ
@@ -149,7 +148,6 @@ s3c24xx_serial_dbg(const char *fmt, ...)
 /* UART name and device definitions */
 
 #define S3C24XX_SERIAL_NAME    "ttySAC"
-#define S3C24XX_SERIAL_DEVFS    "tts/"
 #define S3C24XX_SERIAL_MAJOR   204
 #define S3C24XX_SERIAL_MINOR   64
 
@@ -872,6 +870,8 @@ static const char *s3c24xx_serial_type(struct uart_port *port)
                return "S3C2410";
        case PORT_S3C2440:
                return "S3C2440";
+       case PORT_S3C2412:
+               return "S3C2412";
        default:
                return NULL;
        }
@@ -950,7 +950,6 @@ static struct uart_driver s3c24xx_uart_drv = {
        .nr             = 3,
        .cons           = S3C24XX_SERIAL_CONSOLE,
        .driver_name    = S3C24XX_SERIAL_NAME,
-       .devfs_name     = S3C24XX_SERIAL_DEVFS,
        .major          = S3C24XX_SERIAL_MAJOR,
        .minor          = S3C24XX_SERIAL_MINOR,
 };
@@ -1528,6 +1527,141 @@ static inline void s3c2440_serial_exit(void)
 #define s3c2440_uart_inf_at NULL
 #endif /* CONFIG_CPU_S3C2440 */
 
+#if defined(CONFIG_CPU_S3C2412) || defined(CONFIG_CPU_S3C2413)
+
+static int s3c2412_serial_setsource(struct uart_port *port,
+                                    struct s3c24xx_uart_clksrc *clk)
+{
+       unsigned long ucon = rd_regl(port, S3C2410_UCON);
+
+       ucon &= ~S3C2412_UCON_CLKMASK;
+
+       if (strcmp(clk->name, "uclk") == 0)
+               ucon |= S3C2440_UCON_UCLK;
+       else if (strcmp(clk->name, "pclk") == 0)
+               ucon |= S3C2440_UCON_PCLK;
+       else if (strcmp(clk->name, "usysclk") == 0)
+               ucon |= S3C2412_UCON_USYSCLK;
+       else {
+               printk(KERN_ERR "unknown clock source %s\n", clk->name);
+               return -EINVAL;
+       }
+
+       wr_regl(port, S3C2410_UCON, ucon);
+       return 0;
+}
+
+
+static int s3c2412_serial_getsource(struct uart_port *port,
+                                   struct s3c24xx_uart_clksrc *clk)
+{
+       unsigned long ucon = rd_regl(port, S3C2410_UCON);
+
+       switch (ucon & S3C2412_UCON_CLKMASK) {
+       case S3C2412_UCON_UCLK:
+               clk->divisor = 1;
+               clk->name = "uclk";
+               break;
+
+       case S3C2412_UCON_PCLK:
+       case S3C2412_UCON_PCLK2:
+               clk->divisor = 1;
+               clk->name = "pclk";
+               break;
+
+       case S3C2412_UCON_USYSCLK:
+               clk->divisor = 1;
+               clk->name = "usysclk";
+               break;
+       }
+
+       return 0;
+}
+
+static int s3c2412_serial_resetport(struct uart_port *port,
+                                   struct s3c2410_uartcfg *cfg)
+{
+       unsigned long ucon = rd_regl(port, S3C2410_UCON);
+
+       dbg("%s: port=%p (%08lx), cfg=%p\n",
+           __FUNCTION__, port, port->mapbase, cfg);
+
+       /* ensure we don't change the clock settings... */
+
+       ucon &= S3C2412_UCON_CLKMASK;
+
+       wr_regl(port, S3C2410_UCON,  ucon | cfg->ucon);
+       wr_regl(port, S3C2410_ULCON, cfg->ulcon);
+
+       /* reset both fifos */
+
+       wr_regl(port, S3C2410_UFCON, cfg->ufcon | S3C2410_UFCON_RESETBOTH);
+       wr_regl(port, S3C2410_UFCON, cfg->ufcon);
+
+       return 0;
+}
+
+static struct s3c24xx_uart_info s3c2412_uart_inf = {
+       .name           = "Samsung S3C2412 UART",
+       .type           = PORT_S3C2412,
+       .fifosize       = 64,
+       .rx_fifomask    = S3C2440_UFSTAT_RXMASK,
+       .rx_fifoshift   = S3C2440_UFSTAT_RXSHIFT,
+       .rx_fifofull    = S3C2440_UFSTAT_RXFULL,
+       .tx_fifofull    = S3C2440_UFSTAT_TXFULL,
+       .tx_fifomask    = S3C2440_UFSTAT_TXMASK,
+       .tx_fifoshift   = S3C2440_UFSTAT_TXSHIFT,
+       .get_clksrc     = s3c2412_serial_getsource,
+       .set_clksrc     = s3c2412_serial_setsource,
+       .reset_port     = s3c2412_serial_resetport,
+};
+
+/* device management */
+
+static int s3c2412_serial_probe(struct platform_device *dev)
+{
+       dbg("s3c2440_serial_probe: dev=%p\n", dev);
+       return s3c24xx_serial_probe(dev, &s3c2412_uart_inf);
+}
+
+static struct platform_driver s3c2412_serial_drv = {
+       .probe          = s3c2412_serial_probe,
+       .remove         = s3c24xx_serial_remove,
+       .suspend        = s3c24xx_serial_suspend,
+       .resume         = s3c24xx_serial_resume,
+       .driver         = {
+               .name   = "s3c2412-uart",
+               .owner  = THIS_MODULE,
+       },
+};
+
+
+static inline int s3c2412_serial_init(void)
+{
+       return s3c24xx_serial_init(&s3c2412_serial_drv, &s3c2412_uart_inf);
+}
+
+static inline void s3c2412_serial_exit(void)
+{
+       platform_driver_unregister(&s3c2412_serial_drv);
+}
+
+#define s3c2412_uart_inf_at &s3c2412_uart_inf
+#else
+
+static inline int s3c2412_serial_init(void)
+{
+       return 0;
+}
+
+static inline void s3c2412_serial_exit(void)
+{
+}
+
+#define s3c2412_uart_inf_at NULL
+#endif /* CONFIG_CPU_S3C2440 */
+
+
 /* module initialisation code */
 
 static int __init s3c24xx_serial_modinit(void)
@@ -1542,6 +1676,7 @@ static int __init s3c24xx_serial_modinit(void)
 
        s3c2400_serial_init();
        s3c2410_serial_init();
+       s3c2412_serial_init();
        s3c2440_serial_init();
 
        return 0;
@@ -1551,6 +1686,7 @@ static void __exit s3c24xx_serial_modexit(void)
 {
        s3c2400_serial_exit();
        s3c2410_serial_exit();
+       s3c2412_serial_exit();
        s3c2440_serial_exit();
 
        uart_unregister_driver(&s3c24xx_uart_drv);
@@ -1773,6 +1909,8 @@ static int s3c24xx_serial_initconsole(void)
                info = s3c2410_uart_inf_at;
        } else if (strcmp(dev->name, "s3c2440-uart") == 0) {
                info = s3c2440_uart_inf_at;
+       } else if (strcmp(dev->name, "s3c2412-uart") == 0) {
+               info = s3c2412_uart_inf_at;
        } else {
                printk(KERN_ERR "s3c24xx: no driver for %s\n", dev->name);
                return 0;
@@ -1796,4 +1934,4 @@ console_initcall(s3c24xx_serial_initconsole);
 
 MODULE_LICENSE("GPL");
 MODULE_AUTHOR("Ben Dooks <ben@simtec.co.uk>");
-MODULE_DESCRIPTION("Samsung S3C2410/S3C2440 Serial port driver");
+MODULE_DESCRIPTION("Samsung S3C2410/S3C2440/S3C2412 Serial port driver");