debug-devices.c

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/*
 * linux/arch/arm/plat-omap/debug-devices.c
 *
 * Copyright (C) 2005 Nokia Corporation
 * Modified from mach-omap2/board-h4.c
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 */
#include <linux/gpio.h>
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/platform_device.h>
#include <linux/io.h>
#include <linux/smc91x.h>

#include <mach/hardware.h>
#include "../mach-omap2/debug-devices.h"

/* Many OMAP development platforms reuse the same "debug board"; these
 * platforms include H2, H3, H4, and Perseus2.
 */

static struct smc91x_platdata smc91x_info = {
    .flags  = SMC91X_USE_16BIT | SMC91X_NOWAIT,
    .leda   = RPC_LED_100_10,
    .ledb   = RPC_LED_TX_RX,
};

static struct resource smc91x_resources[] = {
    [0] = {
        .flags  = IORESOURCE_MEM,
    },
    [1] = {
        .flags  = IORESOURCE_IRQ | IORESOURCE_IRQ_LOWEDGE,
    },
};

static struct platform_device smc91x_device = {
    .name       = "smc91x",
    .id     = -1,
    .dev        = {
        .platform_data = &smc91x_info,
    },
    .num_resources  = ARRAY_SIZE(smc91x_resources),
    .resource   = smc91x_resources,
};

static struct resource led_resources[] = {
    [0] = {
        .flags  = IORESOURCE_MEM,
    },
};

static struct platform_device led_device = {
    .name       = "omap_dbg_led",
    .id     = -1,
    .num_resources  = ARRAY_SIZE(led_resources),
    .resource   = led_resources,
};

static struct platform_device *debug_devices[] __initdata = {
    &smc91x_device,
    &led_device,
    /* ps2 kbd + mouse ports */
    /* 4 extra uarts */
    /* 6 input dip switches */
    /* 8 output pins */
};

int __init debug_card_init(u32 addr, unsigned gpio)
{
    int status;

    smc91x_resources[0].start = addr + 0x300;
    smc91x_resources[0].end   = addr + 0x30f;

    smc91x_resources[1].start = gpio_to_irq(gpio);
    smc91x_resources[1].end   = gpio_to_irq(gpio);

    status = gpio_request(gpio, "SMC91x irq");
    if (status < 0) {
        printk(KERN_ERR "GPIO%d unavailable for smc91x IRQ\n", gpio);
        return status;
    }
    gpio_direction_input(gpio);

    led_resources[0].start = addr;
    led_resources[0].end   = addr + SZ_4K - 1;

    return platform_add_devices(debug_devices, ARRAY_SIZE(debug_devices));
}