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e8be5283 WZ |
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 (wuzj@lemote.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, \ | |
e8be5283 WZ |
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_LOONGSON_END] {}, | |
49 | }; | |
50 | ||
51 | static struct platform_device uart8250_device = { | |
52 | .name = "serial8250", | |
53 | .id = PLAT8250_DEV_PLATFORM, | |
e8be5283 WZ |
54 | }; |
55 | ||
56 | static int __init serial_init(void) | |
57 | { | |
a3ed4951 WZ |
58 | if (uart8250_data[mips_machtype][0].iotype == UPIO_MEM) |
59 | uart8250_data[mips_machtype][0].membase = | |
60 | (void __iomem *)_loongson_uart_base; | |
61 | else if (uart8250_data[mips_machtype][0].iotype == UPIO_PORT) | |
62 | uart8250_data[mips_machtype][0].iobase = | |
63 | uart8250_base[mips_machtype] - LOONGSON_PCIIO_BASE; | |
e8be5283 | 64 | |
a3ed4951 | 65 | uart8250_device.dev.platform_data = uart8250_data[mips_machtype]; |
e8be5283 | 66 | |
a3ed4951 | 67 | return platform_device_register(&uart8250_device); |
e8be5283 WZ |
68 | } |
69 | ||
70 | device_initcall(serial_init); |