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wgt634u.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 Aurelien Jarno <aurelien@aurel32.net>
 */

#include <linux/platform_device.h>
#include <linux/module.h>
#include <linux/leds.h>
#include <linux/ssb/ssb.h>
#include <asm/mach-bcm47xx/bcm47xx.h>

/* GPIO definitions for the WGT634U */
#define WGT634U_GPIO_LED      3
#define WGT634U_GPIO_RESET    2
#define WGT634U_GPIO_TP1      7
#define WGT634U_GPIO_TP2      6
#define WGT634U_GPIO_TP3      5
#define WGT634U_GPIO_TP4      4
#define WGT634U_GPIO_TP5      1

static struct gpio_led wgt634u_leds[] = {
      {
            .name = "power",
            .gpio = WGT634U_GPIO_LED,
            .active_low = 1,
            .default_trigger = "heartbeat",
      },
};

static struct gpio_led_platform_data wgt634u_led_data = {
      .num_leds =     ARRAY_SIZE(wgt634u_leds),
      .leds =         wgt634u_leds,
};

static struct platform_device wgt634u_gpio_leds = {
      .name =         "leds-gpio",
      .id =           -1,
      .dev = {
            .platform_data = &wgt634u_led_data,
      }
};

static int __init wgt634u_init(void)
{
      /* There is no easy way to detect that we are running on a WGT634U
       * machine. Use the MAC address as an heuristic. Netgear Inc. has
       * been allocated ranges 00:09:5b:xx:xx:xx and 00:0f:b5:xx:xx:xx.
       */

      u8 *et0mac = ssb_bcm47xx.sprom.r1.et0mac;

      if (et0mac[0] == 0x00 &&
          ((et0mac[1] == 0x09 && et0mac[2] == 0x5b) ||
           (et0mac[1] == 0x0f && et0mac[2] == 0xb5)))
            return platform_device_register(&wgt634u_gpio_leds);
      else
            return -ENODEV;
}

module_init(wgt634u_init);


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