/*
|
* 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[MACH_LOONGSON_END + 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_END] = {},
|
};
|
|
static struct platform_device uart8250_device = {
|
.name = "serial8250",
|
.id = PLAT8250_DEV_PLATFORM,
|
};
|
|
static int __init serial_init(void)
|
{
|
unsigned char iotype;
|
|
iotype = uart8250_data[mips_machtype].iotype;
|
|
if (UPIO_MEM == iotype) {
|
uart8250_data[mips_machtype].mapbase =
|
loongson_uart_base;
|
uart8250_data[mips_machtype].membase =
|
(void __iomem *)_loongson_uart_base;
|
}
|
else if (UPIO_PORT == iotype)
|
uart8250_data[mips_machtype].iobase =
|
loongson_uart_base - LOONGSON_PCIIO_BASE;
|
|
memset(&uart8250_data[mips_machtype + 1], 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);
|
