projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 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) | |
| f7a904df | 10 | * Author: Wu Zhangjin (wuzhangjin@gmail.com) |
| e8be5283 WZ |
11 | */ |
| 12 | ||
| 13 | #include <linux/io.h> | |
| 85cc0288 | 14 | #include <linux/module.h> |
| e8be5283 WZ |
15 | #include <linux/serial_8250.h> |
| 16 | ||
| 17 | #include <asm/bootinfo.h> | |
| 18 | ||
| 19 | #include <loongson.h> | |
| 20 | #include <machine.h> | |
| 21 | ||
| 7546d2f4 | 22 | #define PORT(int, clk) \ |
| e8be5283 WZ |
23 | { \ |
| 24 | .irq = int, \ | |
| 7546d2f4 | 25 | .uartclk = clk, \ |
| e8be5283 WZ |
26 | .iotype = UPIO_PORT, \ |
| 27 | .flags = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST, \ | |
| 28 | .regshift = 0, \ | |
| 29 | } | |
| 30 | ||
| 7546d2f4 | 31 | #define PORT_M(int, clk) \ |
| e8be5283 WZ |
32 | { \ |
| 33 | .irq = MIPS_CPU_IRQ_BASE + (int), \ | |
| 7546d2f4 | 34 | .uartclk = clk, \ |
| e8be5283 WZ |
35 | .iotype = UPIO_MEM, \ |
| 36 | .membase = (void __iomem *)NULL, \ | |
| 37 | .flags = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST, \ | |
| 38 | .regshift = 0, \ | |
| 39 | } | |
| 40 | ||
| 3adeb256 | 41 | static struct plat_serial8250_port uart8250_data[][MAX_UARTS + 1] = { |
| efa386f3 AK |
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_GENERIC] = {PORT_M(2, 25000000), {} }, | |
| 51 | [MACH_LOONGSON_END] = {}, | |
| e8be5283 WZ |
52 | }; |
| 53 | ||
| 54 | static struct platform_device uart8250_device = { | |
| 55 | .name = "serial8250", | |
| 56 | .id = PLAT8250_DEV_PLATFORM, | |
| e8be5283 WZ |
57 | }; |
| 58 | ||
| 59 | static int __init serial_init(void) | |
| 60 | { | |
| 3adeb256 | 61 | int i; |
| c3d8d850 WZ |
62 | unsigned char iotype; |
| 63 | ||
| 64 | iotype = uart8250_data[mips_machtype][0].iotype; | |
| 65 | ||
| 3adeb256 HC |
66 | if (UPIO_MEM == iotype) { |
| 67 | uart8250_data[mips_machtype][0].mapbase = | |
| 68 | loongson_uart_base[0]; | |
| a3ed4951 | 69 | uart8250_data[mips_machtype][0].membase = |
| 3adeb256 HC |
70 | (void __iomem *)_loongson_uart_base[0]; |
| 71 | } | |
| c3d8d850 | 72 | else if (UPIO_PORT == iotype) |
| a3ed4951 | 73 | uart8250_data[mips_machtype][0].iobase = |
| 3adeb256 | 74 | loongson_uart_base[0] - LOONGSON_PCIIO_BASE; |
| e8be5283 | 75 | |
| 3adeb256 HC |
76 | if (loongson_sysconf.uarts[0].uartclk) |
| 77 | uart8250_data[mips_machtype][0].uartclk = | |
| 78 | loongson_sysconf.uarts[0].uartclk; | |
| 79 | ||
| 80 | for (i = 1; i < loongson_sysconf.nr_uarts; i++) { | |
| 81 | iotype = loongson_sysconf.uarts[i].iotype; | |
| 82 | uart8250_data[mips_machtype][i].iotype = iotype; | |
| 83 | loongson_uart_base[i] = loongson_sysconf.uarts[i].uart_base; | |
| 84 | ||
| 85 | if (UPIO_MEM == iotype) { | |
| 86 | uart8250_data[mips_machtype][i].irq = | |
| 87 | MIPS_CPU_IRQ_BASE + loongson_sysconf.uarts[i].int_offset; | |
| 88 | uart8250_data[mips_machtype][i].mapbase = | |
| 89 | loongson_uart_base[i]; | |
| 90 | uart8250_data[mips_machtype][i].membase = | |
| 91 | ioremap_nocache(loongson_uart_base[i], 8); | |
| 92 | } else if (UPIO_PORT == iotype) { | |
| 93 | uart8250_data[mips_machtype][i].irq = | |
| 94 | loongson_sysconf.uarts[i].int_offset; | |
| 95 | uart8250_data[mips_machtype][i].iobase = | |
| 96 | loongson_uart_base[i] - LOONGSON_PCIIO_BASE; | |
| 97 | } | |
| 98 | ||
| 99 | uart8250_data[mips_machtype][i].uartclk = | |
| 100 | loongson_sysconf.uarts[i].uartclk; | |
| 101 | uart8250_data[mips_machtype][i].flags = | |
| 102 | UPF_BOOT_AUTOCONF | UPF_SKIP_TEST; | |
| 103 | } | |
| 104 | ||
| 105 | memset(&uart8250_data[mips_machtype][loongson_sysconf.nr_uarts], | |
| 106 | 0, sizeof(struct plat_serial8250_port)); | |
| a3ed4951 | 107 | uart8250_device.dev.platform_data = uart8250_data[mips_machtype]; |
| e8be5283 | 108 | |
| a3ed4951 | 109 | return platform_device_register(&uart8250_device); |
| e8be5283 | 110 | } |
| 85cc0288 | 111 | module_init(serial_init); |
| e8be5283 | 112 | |
| 85cc0288 PG |
113 | static void __init serial_exit(void) |
| 114 | { | |
| 115 | platform_device_unregister(&uart8250_device); | |
| 116 | } | |
| 117 | module_exit(serial_exit); |