1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
|
/*
* Driver for Samsung SoC onboard UARTs.
*
* Ben Dooks, Copyright (c) 2003-2005 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.
*/
#include <linux/module.h>
#include <linux/ioport.h>
#include <linux/io.h>
#include <linux/platform_device.h>
#include <asm/irq.h>
#include <mach/hardware.h>
#include <plat/regs-serial.h>
#include <mach/regs-gpio.h>
#include "samsung.h"
static int s3c2400_serial_getsource(struct uart_port *port,
struct s3c24xx_uart_clksrc *clk)
{
clk->divisor = 1;
clk->name = "pclk";
return 0;
}
static int s3c2400_serial_setsource(struct uart_port *port,
struct s3c24xx_uart_clksrc *clk)
{
return 0;
}
static int s3c2400_serial_resetport(struct uart_port *port,
struct s3c2410_uartcfg *cfg)
{
dbg("s3c2400_serial_resetport: port=%p (%08lx), cfg=%p\n",
port, port->mapbase, cfg);
wr_regl(port, S3C2410_UCON, cfg->ucon);
wr_regl(port, S3C2410_ULCON, cfg->ulcon);
/* reset both fifos */
wr_regl(port, S3C2410_UFCON, cfg->ufcon | S3C2410_UFCON_RESETBOTH);
wr_regl(port, S3C2410_UFCON, cfg->ufcon);
return 0;
}
static struct s3c24xx_uart_info s3c2400_uart_inf = {
.name = "Samsung S3C2400 UART",
.type = PORT_S3C2400,
.fifosize = 16,
.rx_fifomask = S3C2410_UFSTAT_RXMASK,
.rx_fifoshift = S3C2410_UFSTAT_RXSHIFT,
.rx_fifofull = S3C2410_UFSTAT_RXFULL,
.tx_fifofull = S3C2410_UFSTAT_TXFULL,
.tx_fifomask = S3C2410_UFSTAT_TXMASK,
.tx_fifoshift = S3C2410_UFSTAT_TXSHIFT,
.get_clksrc = s3c2400_serial_getsource,
.set_clksrc = s3c2400_serial_setsource,
.reset_port = s3c2400_serial_resetport,
};
static int s3c2400_serial_probe(struct platform_device *dev)
{
return s3c24xx_serial_probe(dev, &s3c2400_uart_inf);
}
static struct platform_driver s3c2400_serial_driver = {
.probe = s3c2400_serial_probe,
.remove = __devexit_p(s3c24xx_serial_remove),
.driver = {
.name = "s3c2400-uart",
.owner = THIS_MODULE,
},
};
s3c24xx_console_init(&s3c2400_serial_driver, &s3c2400_uart_inf);
static inline int s3c2400_serial_init(void)
{
return s3c24xx_serial_init(&s3c2400_serial_driver, &s3c2400_uart_inf);
}
static inline void s3c2400_serial_exit(void)
{
platform_driver_unregister(&s3c2400_serial_driver);
}
module_init(s3c2400_serial_init);
module_exit(s3c2400_serial_exit);
MODULE_LICENSE("GPL v2");
MODULE_AUTHOR("Ben Dooks <ben@simtec.co.uk>");
MODULE_DESCRIPTION("Samsung S3C2400 SoC Serial port driver");
MODULE_ALIAS("platform:s3c2400-uart");
|
