serial.c
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/*
* Registration of Lasat UART platform device.
*
* Copyright (C) 2007 Brian Murphy <brian@murphy.dk>
*
* 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.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include <linux/errno.h>
#include <linux/init.h>
#include <linux/ioport.h>
#include <linux/platform_device.h>
#include <linux/serial_8250.h>
#include <asm/lasat/lasat.h>
#include <asm/lasat/serial.h>
static struct resource lasat_serial_res[2] __initdata;
static struct plat_serial8250_port lasat_serial8250_port[] = {
{
.iotype = UPIO_MEM,
.flags = UPF_IOREMAP | UPF_BOOT_AUTOCONF |
UPF_SKIP_TEST,
},
{},
};
static __init int lasat_uart_add(void)
{
struct platform_device *pdev;
int retval;
pdev = platform_device_alloc("serial8250", -1);
if (!pdev)
return -ENOMEM;
if (!IS_LASAT_200()) {
lasat_serial_res[0].start = KSEG1ADDR(LASAT_UART_REGS_BASE_100);
lasat_serial_res[0].end = lasat_serial_res[0].start + LASAT_UART_REGS_SHIFT_100 * 8 - 1;
lasat_serial_res[0].flags = IORESOURCE_MEM;
lasat_serial_res[1].start = LASATINT_UART_100;
lasat_serial_res[1].end = LASATINT_UART_100;
lasat_serial_res[1].flags = IORESOURCE_IRQ;
lasat_serial8250_port[0].mapbase = LASAT_UART_REGS_BASE_100;
lasat_serial8250_port[0].uartclk = LASAT_BASE_BAUD_100 * 16;
lasat_serial8250_port[0].regshift = LASAT_UART_REGS_SHIFT_100;
lasat_serial8250_port[0].irq = LASATINT_UART_100;
} else {
lasat_serial_res[0].start = KSEG1ADDR(LASAT_UART_REGS_BASE_200);
lasat_serial_res[0].end = lasat_serial_res[0].start + LASAT_UART_REGS_SHIFT_200 * 8 - 1;
lasat_serial_res[0].flags = IORESOURCE_MEM;
lasat_serial_res[1].start = LASATINT_UART_200;
lasat_serial_res[1].end = LASATINT_UART_200;
lasat_serial_res[1].flags = IORESOURCE_IRQ;
lasat_serial8250_port[0].mapbase = LASAT_UART_REGS_BASE_200;
lasat_serial8250_port[0].uartclk = LASAT_BASE_BAUD_200 * 16;
lasat_serial8250_port[0].regshift = LASAT_UART_REGS_SHIFT_200;
lasat_serial8250_port[0].irq = LASATINT_UART_200;
}
pdev->id = PLAT8250_DEV_PLATFORM;
pdev->dev.platform_data = lasat_serial8250_port;
retval = platform_device_add_resources(pdev, lasat_serial_res, ARRAY_SIZE(lasat_serial_res));
if (retval)
goto err_free_device;
retval = platform_device_add(pdev);
if (retval)
goto err_free_device;
return 0;
err_free_device:
platform_device_put(pdev);
return retval;
}
device_initcall(lasat_uart_add);