linux/drivers/serial/8250_au1x00.c
Freddy Spierenburg 8faaea3faa [SERIAL] Small time UART configuration fix for AU1100 processor
The AU1100 processor does not have an internal UART2. Only
UART0, UART1 and UART3 exist. This patch removes the non existing
UART2 and replaces it with a descriptive comment.

Signed-off-by: Freddy Spierenburg <freddy@dusktilldawn.nl>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-03-26 21:22:51 +01:00

101 lines
2.6 KiB
C

/*
* Serial Device Initialisation for Au1x00
*
* (C) Copyright Embedded Alley Solutions, Inc 2005
* Author: Pantelis Antoniou <pantelis@embeddedalley.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*/
#include <linux/errno.h>
#include <linux/init.h>
#include <linux/interrupt.h>
#include <linux/ioport.h>
#include <linux/module.h>
#include <linux/serial_core.h>
#include <linux/signal.h>
#include <linux/slab.h>
#include <linux/types.h>
#include <linux/serial_8250.h>
#include <asm/mach-au1x00/au1000.h>
#include "8250.h"
#define PORT(_base, _irq) \
{ \
.iobase = _base, \
.membase = (void __iomem *)_base,\
.mapbase = _base, \
.irq = _irq, \
.uartclk = 0, /* filled */ \
.regshift = 2, \
.iotype = UPIO_AU, \
.flags = UPF_SKIP_TEST | \
UPF_IOREMAP, \
}
static struct plat_serial8250_port au1x00_data[] = {
#if defined(CONFIG_SOC_AU1000)
PORT(UART0_ADDR, AU1000_UART0_INT),
PORT(UART1_ADDR, AU1000_UART1_INT),
PORT(UART2_ADDR, AU1000_UART2_INT),
PORT(UART3_ADDR, AU1000_UART3_INT),
#elif defined(CONFIG_SOC_AU1500)
PORT(UART0_ADDR, AU1500_UART0_INT),
PORT(UART3_ADDR, AU1500_UART3_INT),
#elif defined(CONFIG_SOC_AU1100)
PORT(UART0_ADDR, AU1100_UART0_INT),
PORT(UART1_ADDR, AU1100_UART1_INT),
/* The internal UART2 does not exist on the AU1100 processor. */
PORT(UART3_ADDR, AU1100_UART3_INT),
#elif defined(CONFIG_SOC_AU1550)
PORT(UART0_ADDR, AU1550_UART0_INT),
PORT(UART1_ADDR, AU1550_UART1_INT),
PORT(UART3_ADDR, AU1550_UART3_INT),
#elif defined(CONFIG_SOC_AU1200)
PORT(UART0_ADDR, AU1200_UART0_INT),
PORT(UART1_ADDR, AU1200_UART1_INT),
#endif
{ },
};
static struct platform_device au1x00_device = {
.name = "serial8250",
.id = PLAT8250_DEV_AU1X00,
.dev = {
.platform_data = au1x00_data,
},
};
static int __init au1x00_init(void)
{
int i;
unsigned int uartclk;
/* get uart clock */
uartclk = get_au1x00_uart_baud_base() * 16;
/* fill up uartclk */
for (i = 0; au1x00_data[i].flags ; i++)
au1x00_data[i].uartclk = uartclk;
return platform_device_register(&au1x00_device);
}
/* XXX: Yes, I know this doesn't yet work. */
static void __exit au1x00_exit(void)
{
platform_device_unregister(&au1x00_device);
}
module_init(au1x00_init);
module_exit(au1x00_exit);
MODULE_AUTHOR("Pantelis Antoniou <pantelis@embeddedalley.com>");
MODULE_DESCRIPTION("8250 serial probe module for Au1x000 cards");
MODULE_LICENSE("GPL");