serial.c

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/*
 *  Registration of WRPPMC UART platform device.
 *
 *  Copyright (C) 2007  Yoichi Yuasa <[email protected]>
 *
 *  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 Street, 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/gt64120.h>

static struct resource wrppmc_uart_resource[] __initdata = {
    {
        .start  = WRPPMC_UART16550_BASE,
        .end    = WRPPMC_UART16550_BASE + 7,
        .flags  = IORESOURCE_MEM,
    },
    {
        .start  = WRPPMC_UART16550_IRQ,
        .end    = WRPPMC_UART16550_IRQ,
        .flags  = IORESOURCE_IRQ,
    },
};

static struct plat_serial8250_port wrppmc_serial8250_port[] = {
    {
        .irq        = WRPPMC_UART16550_IRQ,
        .uartclk    = WRPPMC_UART16550_CLOCK,
        .iotype     = UPIO_MEM,
        .flags      = UPF_IOREMAP | UPF_SKIP_TEST,
        .mapbase    = WRPPMC_UART16550_BASE,
    },
    {},
};

static __init int wrppmc_uart_add(void)
{
    struct platform_device *pdev;
    int retval;

    pdev = platform_device_alloc("serial8250", -1);
    if (!pdev)
        return -ENOMEM;

    pdev->id = PLAT8250_DEV_PLATFORM;
    pdev->dev.platform_data = wrppmc_serial8250_port;

    retval = platform_device_add_resources(pdev, wrppmc_uart_resource,
                    ARRAY_SIZE(wrppmc_uart_resource));
    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(wrppmc_uart_add);