2 * Driver for Samsung SoC onboard UARTs.
4 * Ben Dooks, Copyright (c) 2003-2008 Simtec Electronics
5 * http://armlinux.simtec.co.uk/
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.
12 struct s3c24xx_uart_info
{
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 unsigned int def_clk_sel
;
23 unsigned long num_clks
;
24 unsigned long clksel_mask
;
25 unsigned long clksel_shift
;
27 /* uart port features */
29 unsigned int has_divslot
:1;
32 int (*reset_port
)(struct uart_port
*, struct s3c2410_uartcfg
*);
35 struct s3c24xx_serial_drv_data
{
36 struct s3c24xx_uart_info
*info
;
37 struct s3c2410_uartcfg
*def_cfg
;
38 unsigned int fifosize
[CONFIG_SERIAL_SAMSUNG_UARTS
];
41 struct s3c24xx_uart_port
{
42 unsigned char rx_claimed
;
43 unsigned char tx_claimed
;
44 unsigned int pm_level
;
45 unsigned long baudclk_rate
;
50 struct s3c24xx_uart_info
*info
;
53 struct uart_port port
;
54 struct s3c24xx_serial_drv_data
*drv_data
;
56 /* reference to platform data */
57 struct s3c2410_uartcfg
*cfg
;
59 #ifdef CONFIG_CPU_FREQ
60 struct notifier_block freq_transition
;
64 /* conversion functions */
66 #define s3c24xx_dev_to_port(__dev) (struct uart_port *)dev_get_drvdata(__dev)
68 /* register access controls */
70 #define portaddr(port, reg) ((port)->membase + (reg))
71 #define portaddrl(port, reg) ((unsigned long *)((port)->membase + (reg)))
73 #define rd_regb(port, reg) (__raw_readb(portaddr(port, reg)))
74 #define rd_regl(port, reg) (__raw_readl(portaddr(port, reg)))
76 #define wr_regb(port, reg, val) __raw_writeb(val, portaddr(port, reg))
77 #define wr_regl(port, reg, val) __raw_writel(val, portaddr(port, reg))
79 #if defined(CONFIG_SERIAL_SAMSUNG_DEBUG) && \
80 defined(CONFIG_DEBUG_LL) && \
83 extern void printascii(const char *);
85 static void dbg(const char *fmt
, ...)
91 vsprintf(buff
, fmt
, va
);
98 #define dbg(x...) do { } while (0)