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
106
107
108
109
110
111
112
113
114
115
116
117
|
/*
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file "COPYING" in the main directory of this archive
* for more details.
*
* Copyright (C) 2007 Ralf Baechle (ralf@linux-mips.org)
*
* Copyright (C) 2009 Lemote, Inc.
* Author: Yan hua (yanhua@lemote.com)
* Author: Wu Zhangjin (wuzhangjin@gmail.com)
*/
#include <linux/io.h>
#include <linux/module.h>
#include <linux/serial_8250.h>
#include <asm/bootinfo.h>
#include <loongson.h>
#include <machine.h>
#define PORT(int, clk) \
{ \
.irq = int, \
.uartclk = clk, \
.iotype = UPIO_PORT, \
.flags = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST, \
.regshift = 0, \
}
#define PORT_M(int, clk) \
{ \
.irq = MIPS_CPU_IRQ_BASE + (int), \
.uartclk = clk, \
.iotype = UPIO_MEM, \
.membase = (void __iomem *)NULL, \
.flags = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST, \
.regshift = 0, \
}
static struct plat_serial8250_port uart8250_data[][MAX_UARTS + 1] = {
[MACH_LOONGSON_UNKNOWN] = {},
[MACH_LEMOTE_FL2E] = {PORT(4, 1843200), {} },
[MACH_LEMOTE_FL2F] = {PORT(3, 1843200), {} },
[MACH_LEMOTE_ML2F7] = {PORT_M(3, 3686400), {} },
[MACH_LEMOTE_YL2F89] = {PORT_M(3, 3686400), {} },
[MACH_DEXXON_GDIUM2F10] = {PORT_M(3, 3686400), {} },
[MACH_LEMOTE_NAS] = {PORT_M(3, 3686400), {} },
[MACH_LEMOTE_LL2F] = {PORT(3, 1843200), {} },
[MACH_LOONGSON_GENERIC] = {PORT_M(2, 25000000), {} },
[MACH_LOONGSON_END] = {},
};
static struct platform_device uart8250_device = {
.name = "serial8250",
.id = PLAT8250_DEV_PLATFORM,
};
static int __init serial_init(void)
{
int i;
unsigned char iotype;
iotype = uart8250_data[mips_machtype][0].iotype;
if (UPIO_MEM == iotype) {
uart8250_data[mips_machtype][0].mapbase =
loongson_uart_base[0];
uart8250_data[mips_machtype][0].membase =
(void __iomem *)_loongson_uart_base[0];
}
else if (UPIO_PORT == iotype)
uart8250_data[mips_machtype][0].iobase =
loongson_uart_base[0] - LOONGSON_PCIIO_BASE;
if (loongson_sysconf.uarts[0].uartclk)
uart8250_data[mips_machtype][0].uartclk =
loongson_sysconf.uarts[0].uartclk;
for (i = 1; i < loongson_sysconf.nr_uarts; i++) {
iotype = loongson_sysconf.uarts[i].iotype;
uart8250_data[mips_machtype][i].iotype = iotype;
loongson_uart_base[i] = loongson_sysconf.uarts[i].uart_base;
if (UPIO_MEM == iotype) {
uart8250_data[mips_machtype][i].irq =
MIPS_CPU_IRQ_BASE + loongson_sysconf.uarts[i].int_offset;
uart8250_data[mips_machtype][i].mapbase =
loongson_uart_base[i];
uart8250_data[mips_machtype][i].membase =
ioremap_nocache(loongson_uart_base[i], 8);
} else if (UPIO_PORT == iotype) {
uart8250_data[mips_machtype][i].irq =
loongson_sysconf.uarts[i].int_offset;
uart8250_data[mips_machtype][i].iobase =
loongson_uart_base[i] - LOONGSON_PCIIO_BASE;
}
uart8250_data[mips_machtype][i].uartclk =
loongson_sysconf.uarts[i].uartclk;
uart8250_data[mips_machtype][i].flags =
UPF_BOOT_AUTOCONF | UPF_SKIP_TEST;
}
memset(&uart8250_data[mips_machtype][loongson_sysconf.nr_uarts],
0, sizeof(struct plat_serial8250_port));
uart8250_device.dev.platform_data = uart8250_data[mips_machtype];
return platform_device_register(&uart8250_device);
}
module_init(serial_init);
static void __exit serial_exit(void)
{
platform_device_unregister(&uart8250_device);
}
module_exit(serial_exit);
|
