61 lines
1.5 KiB
C
61 lines
1.5 KiB
C
|
/*
|
||
|
|
* 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");
|