MIPS: Loongson: Change the Email address of Wu Zhangjin
[kernel.git] / arch / mips / loongson / common / serial.c
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/init.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)                       \
23 {                                                               \
24         .irq            = int,                                  \
25         .uartclk        = 1843200,                              \
26         .iotype         = UPIO_PORT,                            \
27         .flags          = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST,    \
28         .regshift       = 0,                                    \
29 }
30
31 #define PORT_M(int)                             \
32 {                                                               \
33         .irq            = MIPS_CPU_IRQ_BASE + (int),            \
34         .uartclk        = 3686400,                              \
35         .iotype         = UPIO_MEM,                             \
36         .membase        = (void __iomem *)NULL,                 \
37         .flags          = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST,    \
38         .regshift       = 0,                                    \
39 }
40
41 static struct plat_serial8250_port uart8250_data[][2] = {
42         [MACH_LOONGSON_UNKNOWN]         {},
43         [MACH_LEMOTE_FL2E]              {PORT(4), {} },
44         [MACH_LEMOTE_FL2F]              {PORT(3), {} },
45         [MACH_LEMOTE_ML2F7]             {PORT_M(3), {} },
46         [MACH_LEMOTE_YL2F89]            {PORT_M(3), {} },
47         [MACH_DEXXON_GDIUM2F10]         {PORT_M(3), {} },
48         [MACH_LEMOTE_NAS]               {PORT_M(3), {} },
49         [MACH_LEMOTE_LL2F]              {PORT(3), {} },
50         [MACH_LOONGSON_END]             {},
51 };
52
53 static struct platform_device uart8250_device = {
54         .name = "serial8250",
55         .id = PLAT8250_DEV_PLATFORM,
56 };
57
58 static int __init serial_init(void)
59 {
60         unsigned char iotype;
61
62         iotype = uart8250_data[mips_machtype][0].iotype;
63
64         if (UPIO_MEM == iotype)
65                 uart8250_data[mips_machtype][0].membase =
66                         (void __iomem *)_loongson_uart_base;
67         else if (UPIO_PORT == iotype)
68                 uart8250_data[mips_machtype][0].iobase =
69                     loongson_uart_base - LOONGSON_PCIIO_BASE;
70
71         uart8250_device.dev.platform_data = uart8250_data[mips_machtype];
72
73         return platform_device_register(&uart8250_device);
74 }
75
76 device_initcall(serial_init);