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/*
* 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);
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