LXR linux/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
  13struct 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        /* uart port features */
  25
  26        unsigned int            has_divslot:1;
  27
  28        /* clock source control */
  29
  30        int (*get_clksrc)(struct uart_port *, struct s3c24xx_uart_clksrc *clk);
  31        int (*set_clksrc)(struct uart_port *, struct s3c24xx_uart_clksrc *clk);
  32
  33        /* uart controls */
  34        int (*reset_port)(struct uart_port *, struct s3c2410_uartcfg *);
  35};
  36
  37struct s3c24xx_uart_port {
  38        unsigned char                   rx_claimed;
  39        unsigned char                   tx_claimed;
  40        unsigned int                    pm_level;
  41        unsigned long                   baudclk_rate;
  42
  43        unsigned int                    rx_irq;
  44        unsigned int                    tx_irq;
  45
  46        struct s3c24xx_uart_info        *info;
  47        struct s3c24xx_uart_clksrc      *clksrc;
  48        struct clk                      *clk;
  49        struct clk                      *baudclk;
  50        struct uart_port                port;
  51
  52#ifdef CONFIG_CPU_FREQ
  53        struct notifier_block           freq_transition;
  54#endif
  55};
  56
  57/* conversion functions */
  58
  59#define s3c24xx_dev_to_port(__dev) (struct uart_port *)dev_get_drvdata(__dev)
  60#define s3c24xx_dev_to_cfg(__dev) (struct s3c2410_uartcfg *)((__dev)->platform_data)
  61
  62/* register access controls */
  63
  64#define portaddr(port, reg) ((port)->membase + (reg))
  65
  66#define rd_regb(port, reg) (__raw_readb(portaddr(port, reg)))
  67#define rd_regl(port, reg) (__raw_readl(portaddr(port, reg)))
  68
  69#define wr_regb(port, reg, val) __raw_writeb(val, portaddr(port, reg))
  70#define wr_regl(port, reg, val) __raw_writel(val, portaddr(port, reg))
  71
  72extern int s3c24xx_serial_probe(struct platform_device *dev,
  73                                struct s3c24xx_uart_info *uart);
  74
  75extern int __devexit s3c24xx_serial_remove(struct platform_device *dev);
  76
  77extern int s3c24xx_serial_initconsole(struct platform_driver *drv,
  78                                      struct s3c24xx_uart_info *uart);
  79
  80extern int s3c24xx_serial_init(struct platform_driver *drv,
  81                               struct s3c24xx_uart_info *info);
  82
  83#ifdef CONFIG_SERIAL_SAMSUNG_CONSOLE
  84
  85#define s3c24xx_console_init(__drv, __inf)                      \
  86static int __init s3c_serial_console_init(void)                 \
  87{                                                               \
  88        return s3c24xx_serial_initconsole(__drv, __inf);        \
  89}                                                               \
  90                                                                \
  91console_initcall(s3c_serial_console_init)
  92
  93#else
  94#define s3c24xx_console_init(drv, inf) extern void no_console(void)
  95#endif
  96
  97#ifdef CONFIG_SERIAL_SAMSUNG_DEBUG
  98
  99extern void printascii(const char *);
 100
 101static void dbg(const char *fmt, ...)
 102{
 103        va_list va;
 104        char buff[256];
 105
 106        va_start(va, fmt);
 107        vsprintf(buff, fmt, va);
 108        va_end(va);
 109
 110        printascii(buff);
 111}
 112
 113#else
 114#define dbg(x...) do { } while (0)
 115#endif
 116