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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))
#if defined(CONFIG_SERIAL_SAMSUNG_DEBUG) && \
defined(CONFIG_DEBUG_LL) && \
!defined(MODULE)
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
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