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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)
*/
#include <linux/init.h>
#include <linux/module.h>
#include <linux/serial_8250.h>
#include <asm/jazz.h>
/*
* Confusion ... It seems the original Microsoft Jazz machine used to have a
* 4.096MHz clock for its UART while the MIPS Magnum and Millenium systems
* had 8MHz. The Olivetti M700-10 and the Acer PICA have 1.8432MHz like PCs.
*/
#ifdef CONFIG_OLIVETTI_M700
#define JAZZ_BASE_BAUD 1843200
#else
#define JAZZ_BASE_BAUD 8000000 /* 3072000 */
#endif
#define JAZZ_UART_FLAGS (UPF_BOOT_AUTOCONF | UPF_SKIP_TEST | UPF_IOREMAP)
#define JAZZ_PORT(base, int) \
{ \
.mapbase = base, \
.irq = int, \
.uartclk = JAZZ_BASE_BAUD, \
.iotype = UPIO_MEM, \
.flags = JAZZ_UART_FLAGS, \
.regshift = 0, \
}
static struct plat_serial8250_port uart8250_data[] = {
JAZZ_PORT(JAZZ_SERIAL1_BASE, JAZZ_SERIAL1_IRQ),
JAZZ_PORT(JAZZ_SERIAL2_BASE, JAZZ_SERIAL2_IRQ),
{ },
};
static struct platform_device uart8250_device = {
.name = "serial8250",
.id = PLAT8250_DEV_PLATFORM,
.dev = {
.platform_data = uart8250_data,
},
};
static int __init uart8250_init(void)
{
return platform_device_register(&uart8250_device);
}
module_init(uart8250_init);
MODULE_AUTHOR("Ralf Baechle <ralf@linux-mips.org>");
MODULE_LICENSE("GPL");
MODULE_DESCRIPTION("8250 UART probe driver for the Jazz family");
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