/*
* 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/init.h>
#include <linux/serial_8250.h>
#include <asm/bootinfo.h>
#include <loongson.h>
#include <machine.h>
#define PORT(int) \
{ \
.irq = int, \
.uartclk = 1843200, \
.iotype = UPIO_PORT, \
.flags = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST, \
.regshift = 0, \
}
#define PORT_M(int) \
{ \
.irq = MIPS_CPU_IRQ_BASE + (int), \
.uartclk = 3686400, \
.iotype = UPIO_MEM, \
.membase = (void __iomem *)NULL, \
.flags = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST, \
.regshift = 0, \
}
static struct plat_serial8250_port uart8250_data[][2] = {
[MACH_LOONGSON_UNKNOWN] {},
[MACH_LEMOTE_FL2E] {PORT(4), {} },
[MACH_LEMOTE_FL2F] {PORT(3), {} },
[MACH_LEMOTE_ML2F7] {PORT_M(3), {} },
[MACH_LEMOTE_YL2F89] {PORT_M(3), {} },
[MACH_DEXXON_GDIUM2F10] {PORT_M(3), {} },
[MACH_LEMOTE_NAS] {PORT_M(3), {} },
[MACH_LEMOTE_LL2F] {PORT(3), {} },
[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][0].iotype;
if (UPIO_MEM == iotype)
uart8250_data[mips_machtype][0].membase =
(void __iomem *)_loongson_uart_base;
else if (UPIO_PORT == iotype)
uart8250_data[mips_machtype][0].iobase =
loongson_uart_base - LOONGSON_PCIIO_BASE;
uart8250_device.dev.platform_data = uart8250_data[mips_machtype];
return platform_device_register(&uart8250_device);
}
device_initcall(serial_init);
