1/*
2 * This file is subject to the terms and conditions of the GNU General Public
3 * License.  See the file "COPYING" in the main directory of this archive
4 * for more details.
5 *
6 * Copyright (C) 2007 Ralf Baechle (ralf@linux-mips.org)
7 *
8 * Copyright (C) 2009 Lemote, Inc.
9 * Author: Yan hua (yanhua@lemote.com)
10 * Author: Wu Zhangjin (wuzhangjin@gmail.com)
11 */
12
13#include <linux/io.h>
14#include <linux/module.h>
15#include <linux/serial_8250.h>
16
17#include <asm/bootinfo.h>
18
19#include <loongson.h>
20#include <machine.h>
21
22#define PORT(int, clk)			\
23{								\
24	.irq		= int,					\
25	.uartclk	= clk,					\
26	.iotype		= UPIO_PORT,				\
27	.flags		= UPF_BOOT_AUTOCONF | UPF_SKIP_TEST,	\
28	.regshift	= 0,					\
29}
30
31#define PORT_M(int, clk)				\
32{								\
33	.irq		= MIPS_CPU_IRQ_BASE + (int),		\
34	.uartclk	= clk,					\
35	.iotype		= UPIO_MEM,				\
36	.membase	= (void __iomem *)NULL,			\
37	.flags		= UPF_BOOT_AUTOCONF | UPF_SKIP_TEST,	\
38	.regshift	= 0,					\
39}
40
41static struct plat_serial8250_port uart8250_data[MACH_LOONGSON_END + 1] = {
42	[MACH_LOONGSON_UNKNOWN]	= {},
43	[MACH_LEMOTE_FL2E]	= PORT(4, 1843200),
44	[MACH_LEMOTE_FL2F]	= PORT(3, 1843200),
45	[MACH_LEMOTE_ML2F7]	= PORT_M(3, 3686400),
46	[MACH_LEMOTE_YL2F89]	= PORT_M(3, 3686400),
47	[MACH_DEXXON_GDIUM2F10]	= PORT_M(3, 3686400),
48	[MACH_LEMOTE_NAS]	= PORT_M(3, 3686400),
49	[MACH_LEMOTE_LL2F]	= PORT(3, 1843200),
50	[MACH_LOONGSON_END]	= {},
51};
52
53static struct platform_device uart8250_device = {
54	.name = "serial8250",
55	.id = PLAT8250_DEV_PLATFORM,
56};
57
58static int __init serial_init(void)
59{
60	unsigned char iotype;
61
62	iotype = uart8250_data[mips_machtype].iotype;
63
64	if (UPIO_MEM == iotype) {
65		uart8250_data[mips_machtype].mapbase =
66			loongson_uart_base;
67		uart8250_data[mips_machtype].membase =
68			(void __iomem *)_loongson_uart_base;
69	}
70	else if (UPIO_PORT == iotype)
71		uart8250_data[mips_machtype].iobase =
72			loongson_uart_base - LOONGSON_PCIIO_BASE;
73
74	memset(&uart8250_data[mips_machtype + 1], 0,
75			sizeof(struct plat_serial8250_port));
76	uart8250_device.dev.platform_data = &uart8250_data[mips_machtype];
77
78	return platform_device_register(&uart8250_device);
79}
80module_init(serial_init);
81
82static void __exit serial_exit(void)
83{
84	platform_device_unregister(&uart8250_device);
85}
86module_exit(serial_exit);
87