samsung.h

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/*
 * Driver for Samsung SoC onboard UARTs.
 *
 * Ben Dooks, Copyright (c) 2003-2008 Simtec Electronics
 *  http://armlinux.simtec.co.uk/
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
*/

struct s3c24xx_uart_info {
    char            *name;
    unsigned int        type;
    unsigned int        fifosize;
    unsigned long       rx_fifomask;
    unsigned long       rx_fifoshift;
    unsigned long       rx_fifofull;
    unsigned long       tx_fifomask;
    unsigned long       tx_fifoshift;
    unsigned long       tx_fifofull;
    unsigned int        def_clk_sel;
    unsigned long       num_clks;
    unsigned long       clksel_mask;
    unsigned long       clksel_shift;

    /* uart port features */

    unsigned int        has_divslot:1;

    /* uart controls */
    int (*reset_port)(struct uart_port *, struct s3c2410_uartcfg *);
};

struct s3c24xx_serial_drv_data {
    struct s3c24xx_uart_info    *info;
    struct s3c2410_uartcfg      *def_cfg;
    unsigned int            fifosize[CONFIG_SERIAL_SAMSUNG_UARTS];
};

struct s3c24xx_uart_port {
    unsigned char           rx_claimed;
    unsigned char           tx_claimed;
    unsigned int            pm_level;
    unsigned long           baudclk_rate;

    unsigned int            rx_irq;
    unsigned int            tx_irq;

    struct s3c24xx_uart_info    *info;
    struct clk          *clk;
    struct clk          *baudclk;
    struct uart_port        port;
    struct s3c24xx_serial_drv_data  *drv_data;

    /* reference to platform data */
    struct s3c2410_uartcfg      *cfg;

#ifdef CONFIG_CPU_FREQ
    struct notifier_block       freq_transition;
#endif
};

/* conversion functions */

#define s3c24xx_dev_to_port(__dev) (struct uart_port *)dev_get_drvdata(__dev)

/* register access controls */

#define portaddr(port, reg) ((port)->membase + (reg))
#define portaddrl(port, reg) ((unsigned long *)((port)->membase + (reg)))

#define rd_regb(port, reg) (__raw_readb(portaddr(port, reg)))
#define rd_regl(port, reg) (__raw_readl(portaddr(port, reg)))

#define wr_regb(port, reg, val) __raw_writeb(val, portaddr(port, reg))
#define wr_regl(port, reg, val) __raw_writel(val, portaddr(port, reg))

#ifdef CONFIG_SERIAL_SAMSUNG_DEBUG

extern void printascii(const char *);

static void dbg(const char *fmt, ...)
{
    va_list va;
    char buff[256];

    va_start(va, fmt);
    vsprintf(buff, fmt, va);
    va_end(va);

    printascii(buff);
}

#else
#define dbg(x...) do { } while (0)
#endif