drivers/serial/samsung.h

   1 /* linux/drivers/serial/samsung.h
   2  *
   3  * Driver for Samsung SoC onboard UARTs.
   4  *
   5  * Ben Dooks, Copyright (c) 2003-2005,2008 Simtec Electronics
   6  *      http://armlinux.simtec.co.uk/
   7  *
   8  * This program is free software; you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License version 2 as
  10  * published by the Free Software Foundation.
  11 */
  12
  13 struct s3c24xx_uart_info {
  14         char                    *name;
  15         unsigned int            type;
  16         unsigned int            fifosize;
  17         unsigned long           rx_fifomask;
  18         unsigned long           rx_fifoshift;
  19         unsigned long           rx_fifofull;
  20         unsigned long           tx_fifomask;
  21         unsigned long           tx_fifoshift;
  22         unsigned long           tx_fifofull;
  23
  24         /* clock source control */
  25
  26         int (*get_clksrc)(struct uart_port *, struct s3c24xx_uart_clksrc *clk);
  27         int (*set_clksrc)(struct uart_port *, struct s3c24xx_uart_clksrc *clk);
  28
  29         /* uart controls */
  30         int (*reset_port)(struct uart_port *, struct s3c2410_uartcfg *);
  31 };
  32
  33 struct s3c24xx_uart_port {
  34         unsigned char                   rx_claimed;
  35         unsigned char                   tx_claimed;
  36
  37         struct s3c24xx_uart_info        *info;
  38         struct s3c24xx_uart_clksrc      *clksrc;
  39         struct clk                      *clk;
  40         struct clk                      *baudclk;
  41         struct uart_port                port;
  42 };
  43
  44 /* conversion functions */
  45
  46 #define s3c24xx_dev_to_port(__dev) (struct uart_port *)dev_get_drvdata(__dev)
  47 #define s3c24xx_dev_to_cfg(__dev) (struct s3c2410_uartcfg *)((__dev)->platform_data)
  48
  49 /* register access controls */
  50
  51 #define portaddr(port, reg) ((port)->membase + (reg))
  52
  53 #define rd_regb(port, reg) (__raw_readb(portaddr(port, reg)))
  54 #define rd_regl(port, reg) (__raw_readl(portaddr(port, reg)))
  55
  56 #define wr_regb(port, reg, val) __raw_writeb(val, portaddr(port, reg))
  57 #define wr_regl(port, reg, val) __raw_writel(val, portaddr(port, reg))
  58
  59 extern int s3c24xx_serial_probe(struct platform_device *dev,
  60                                 struct s3c24xx_uart_info *uart);
  61
  62 extern int s3c24xx_serial_remove(struct platform_device *dev);
  63
  64 extern int s3c24xx_serial_initconsole(struct platform_driver *drv,
  65                                       struct s3c24xx_uart_info *uart);
  66
  67 extern int s3c24xx_serial_init(struct platform_driver *drv,
  68                                struct s3c24xx_uart_info *info);
  69
  70 #ifdef CONFIG_SERIAL_SAMSUNG_CONSOLE
  71
  72 #define s3c24xx_console_init(__drv, __inf)                      \
  73 static int __init s3c_serial_console_init(void)                 \
  74 {                                                               \
  75         return s3c24xx_serial_initconsole(__drv, __inf);        \
  76 }                                                               \
  77                                                                 \
  78 console_initcall(s3c_serial_console_init)
  79
  80 #else
  81 #define s3c24xx_console_init(drv, inf) extern void no_console(void)
  82 #endif
  83
  84 #ifdef CONFIG_SERIAL_SAMSUNG_DEBUG
  85
  86 extern void printascii(const char *);
  87
  88 static void dbg(const char *fmt, ...)
  89 {
  90         va_list va;
  91         char buff[256];
  92
  93         va_start(va, fmt);
  94         vsprintf(buff, fmt, va);
  95         va_end(va);
  96
  97         printascii(buff);
  98 }
  99
 100 #else
 101 #define dbg(x...) do { } while (0)
 102 #endif