tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1/*
2 * Serial Device Initialisation for Au1x00
3 *
4 * (C) Copyright Embedded Alley Solutions, Inc 2005
5 * Author: Pantelis Antoniou <pantelis@embeddedalley.com>
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 as published by
9 * the Free Software Foundation; either version 2 of the License, or
10 * (at your option) any later version.
11 */
12
13#include <linux/errno.h>
14#include <linux/init.h>
15#include <linux/interrupt.h>
16#include <linux/ioport.h>
17#include <linux/module.h>
18#include <linux/serial_core.h>
19#include <linux/signal.h>
20#include <linux/slab.h>
21#include <linux/types.h>
22
23#include <linux/serial_8250.h>
24
25#include <asm/mach-au1x00/au1000.h>
26
27#include "8250.h"
28
29#define PORT(_base, _irq) \
30 { \
31 .iobase = _base, \
32 .membase = (void __iomem *)_base,\
33 .mapbase = _base, \
34 .irq = _irq, \
35 .uartclk = 0, /* filled */ \
36 .regshift = 2, \
37 .iotype = UPIO_AU, \
38 .flags = UPF_SKIP_TEST | \
39 UPF_IOREMAP, \
40 }
41
42static struct plat_serial8250_port au1x00_data[] = {
43#if defined(CONFIG_SOC_AU1000)
44 PORT(UART0_ADDR, AU1000_UART0_INT),
45 PORT(UART1_ADDR, AU1000_UART1_INT),
46 PORT(UART2_ADDR, AU1000_UART2_INT),
47 PORT(UART3_ADDR, AU1000_UART3_INT),
48#elif defined(CONFIG_SOC_AU1500)
49 PORT(UART0_ADDR, AU1500_UART0_INT),
50 PORT(UART3_ADDR, AU1500_UART3_INT),
51#elif defined(CONFIG_SOC_AU1100)
52 PORT(UART0_ADDR, AU1100_UART0_INT),
53 PORT(UART1_ADDR, AU1100_UART1_INT),
54 PORT(UART2_ADDR, AU1100_UART2_INT),
55 PORT(UART3_ADDR, AU1100_UART3_INT),
56#elif defined(CONFIG_SOC_AU1550)
57 PORT(UART0_ADDR, AU1550_UART0_INT),
58 PORT(UART1_ADDR, AU1550_UART1_INT),
59 PORT(UART2_ADDR, AU1550_UART2_INT),
60 PORT(UART3_ADDR, AU1550_UART3_INT),
61#elif defined(CONFIG_SOC_AU1200)
62 PORT(UART0_ADDR, AU1200_UART0_INT),
63 PORT(UART1_ADDR, AU1200_UART1_INT),
64#endif
65 { },
66};
67
68static struct platform_device au1x00_device = {
69 .name = "serial8250",
70 .id = PLAT8250_DEV_AU1X00,
71 .dev = {
72 .platform_data = au1x00_data,
73 },
74};
75
76static int __init au1x00_init(void)
77{
78 int i;
79 unsigned int uartclk;
80
81 /* get uart clock */
82 uartclk = get_au1x00_uart_baud_base() * 16;
83
84 /* fill up uartclk */
85 for (i = 0; au1x00_data[i].flags ; i++)
86 au1x00_data[i].uartclk = uartclk;
87
88 return platform_device_register(&au1x00_device);
89}
90
91/* XXX: Yes, I know this doesn't yet work. */
92static void __exit au1x00_exit(void)
93{
94 platform_device_unregister(&au1x00_device);
95}
96
97module_init(au1x00_init);
98module_exit(au1x00_exit);
99
100MODULE_AUTHOR("Pantelis Antoniou <pantelis@embeddedalley.com>");
101MODULE_DESCRIPTION("8250 serial probe module for Au1x000 cards");
102MODULE_LICENSE("GPL");