/drivers/tty/serial/samsung.h
C Header | 100 lines | 59 code | 26 blank | 15 comment | 1 complexity | c46c3458fb3abb9dd251eb399f1240bd MD5 | raw file
Possible License(s): LGPL-2.0, AGPL-1.0, GPL-2.0
1/* 2 * Driver for Samsung SoC onboard UARTs. 3 * 4 * Ben Dooks, Copyright (c) 2003-2008 Simtec Electronics 5 * http://armlinux.simtec.co.uk/ 6 * 7 * This program is free software; you can redistribute it and/or modify 8 * it under the terms of the GNU General Public License version 2 as 9 * published by the Free Software Foundation. 10*/ 11 12struct s3c24xx_uart_info { 13 char *name; 14 unsigned int type; 15 unsigned int fifosize; 16 unsigned long rx_fifomask; 17 unsigned long rx_fifoshift; 18 unsigned long rx_fifofull; 19 unsigned long tx_fifomask; 20 unsigned long tx_fifoshift; 21 unsigned long tx_fifofull; 22 23 /* uart port features */ 24 25 unsigned int has_divslot:1; 26 27 /* clock source control */ 28 29 int (*get_clksrc)(struct uart_port *, struct s3c24xx_uart_clksrc *clk); 30 int (*set_clksrc)(struct uart_port *, struct s3c24xx_uart_clksrc *clk); 31 32 /* uart controls */ 33 int (*reset_port)(struct uart_port *, struct s3c2410_uartcfg *); 34}; 35 36struct s3c24xx_uart_port { 37 unsigned char rx_claimed; 38 unsigned char tx_claimed; 39 unsigned int pm_level; 40 unsigned long baudclk_rate; 41 42 unsigned int rx_irq; 43 unsigned int tx_irq; 44 45 struct s3c24xx_uart_info *info; 46 struct s3c24xx_uart_clksrc *clksrc; 47 struct clk *clk; 48 struct clk *baudclk; 49 struct uart_port port; 50 51#ifdef CONFIG_CPU_FREQ 52 struct notifier_block freq_transition; 53#endif 54}; 55 56/* conversion functions */ 57 58#define s3c24xx_dev_to_port(__dev) (struct uart_port *)dev_get_drvdata(__dev) 59#define s3c24xx_dev_to_cfg(__dev) (struct s3c2410_uartcfg *)((__dev)->platform_data) 60 61/* register access controls */ 62 63#define portaddr(port, reg) ((port)->membase + (reg)) 64 65#define rd_regb(port, reg) (__raw_readb(portaddr(port, reg))) 66#define rd_regl(port, reg) (__raw_readl(portaddr(port, reg))) 67 68#define wr_regb(port, reg, val) __raw_writeb(val, portaddr(port, reg)) 69#define wr_regl(port, reg, val) __raw_writel(val, portaddr(port, reg)) 70 71extern int s3c24xx_serial_probe(struct platform_device *dev, 72 struct s3c24xx_uart_info *uart); 73 74extern int __devexit s3c24xx_serial_remove(struct platform_device *dev); 75 76extern int s3c24xx_serial_initconsole(struct platform_driver *drv, 77 struct s3c24xx_uart_info **uart); 78 79extern int s3c24xx_serial_init(struct platform_driver *drv, 80 struct s3c24xx_uart_info *info); 81 82#ifdef CONFIG_SERIAL_SAMSUNG_DEBUG 83 84extern void printascii(const char *); 85 86static void dbg(const char *fmt, ...) 87{ 88 va_list va; 89 char buff[256]; 90 91 va_start(va, fmt); 92 vsprintf(buff, fmt, va); 93 va_end(va); 94 95 printascii(buff); 96} 97 98#else 99#define dbg(x...) do { } while (0) 100#endif