Merge branch 'for-linus' of git://repo.or.cz/cris-mirror
[kernel.git] / 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
13 struct 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
37 struct 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
72 extern int s3c24xx_serial_probe(struct platform_device *dev,
73                                 struct s3c24xx_uart_info *uart);
74
75 extern int s3c24xx_serial_remove(struct platform_device *dev);
76
77 extern int s3c24xx_serial_initconsole(struct platform_driver *drv,
78                                       struct s3c24xx_uart_info *uart);
79
80 extern 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)                      \
86 static int __init s3c_serial_console_init(void)                 \
87 {                                                               \
88         return s3c24xx_serial_initconsole(__drv, __inf);        \
89 }                                                               \
90                                                                 \
91 console_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
99 extern void printascii(const char *);
100
101 static 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