tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
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
13struct 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 /* clock source control */
25
26 int (*get_clksrc)(struct uart_port *, struct s3c24xx_uart_clksrc *clk);
27 int (*set_clksrc)(struct uart_port *, struct s3c24xx_uart_clksrc *clk);
28
29 /* uart controls */
30 int (*reset_port)(struct uart_port *, struct s3c2410_uartcfg *);
31};
32
33struct s3c24xx_uart_port {
34 unsigned char rx_claimed;
35 unsigned char tx_claimed;
36 unsigned int pm_level;
37 unsigned long baudclk_rate;
38
39 unsigned int rx_irq;
40 unsigned int tx_irq;
41
42 struct s3c24xx_uart_info *info;
43 struct s3c24xx_uart_clksrc *clksrc;
44 struct clk *clk;
45 struct clk *baudclk;
46 struct uart_port port;
47
48#ifdef CONFIG_CPU_FREQ
49 struct notifier_block freq_transition;
50#endif
51};
52
53/* conversion functions */
54
55#define s3c24xx_dev_to_port(__dev) (struct uart_port *)dev_get_drvdata(__dev)
56#define s3c24xx_dev_to_cfg(__dev) (struct s3c2410_uartcfg *)((__dev)->platform_data)
57
58/* register access controls */
59
60#define portaddr(port, reg) ((port)->membase + (reg))
61
62#define rd_regb(port, reg) (__raw_readb(portaddr(port, reg)))
63#define rd_regl(port, reg) (__raw_readl(portaddr(port, reg)))
64
65#define wr_regb(port, reg, val) __raw_writeb(val, portaddr(port, reg))
66#define wr_regl(port, reg, val) __raw_writel(val, portaddr(port, reg))
67
68extern int s3c24xx_serial_probe(struct platform_device *dev,
69 struct s3c24xx_uart_info *uart);
70
71extern int s3c24xx_serial_remove(struct platform_device *dev);
72
73extern int s3c24xx_serial_initconsole(struct platform_driver *drv,
74 struct s3c24xx_uart_info *uart);
75
76extern int s3c24xx_serial_init(struct platform_driver *drv,
77 struct s3c24xx_uart_info *info);
78
79#ifdef CONFIG_SERIAL_SAMSUNG_CONSOLE
80
81#define s3c24xx_console_init(__drv, __inf) \
82static int __init s3c_serial_console_init(void) \
83{ \
84 return s3c24xx_serial_initconsole(__drv, __inf); \
85} \
86 \
87console_initcall(s3c_serial_console_init)
88
89#else
90#define s3c24xx_console_init(drv, inf) extern void no_console(void)
91#endif
92
93#ifdef CONFIG_SERIAL_SAMSUNG_DEBUG
94
95extern void printascii(const char *);
96
97static void dbg(const char *fmt, ...)
98{
99 va_list va;
100 char buff[256];
101
102 va_start(va, fmt);
103 vsprintf(buff, fmt, va);
104 va_end(va);
105
106 printascii(buff);
107}
108
109#else
110#define dbg(x...) do { } while (0)
111#endif