LXR linux/arch/mips/cobalt/buttons.c

   1/*
   2 *  Cobalt buttons platform device.
   3 *
   4 *  Copyright (C) 2007  Yoichi Yuasa <yuasa@linux-mips.org>
   5 *
   6 *  This program is free software; you can redistribute it and/or modify
   7 *  it under the terms of the GNU General Public License as published by
   8 *  the Free Software Foundation; either version 2 of the License, or
   9 *  (at your option) any later version.
  10 *
  11 *  This program is distributed in the hope that it will be useful,
  12 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 *  GNU General Public License for more details.
  15 *
  16 *  You should have received a copy of the GNU General Public License
  17 *  along with this program; if not, write to the Free Software
  18 *  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
  19 */
  20
  21#include <linux/platform_device.h>
  22#include <linux/errno.h>
  23#include <linux/init.h>
  24
  25static struct resource cobalt_buttons_resource __initdata = {
  26        .start  = 0x1d000000,
  27        .end    = 0x1d000003,
  28        .flags  = IORESOURCE_MEM,
  29};
  30
  31static __init int cobalt_add_buttons(void)
  32{
  33        struct platform_device *pd;
  34        int error;
  35
  36        pd = platform_device_alloc("Cobalt buttons", -1);
  37        if (!pd)
  38                return -ENOMEM;
  39
  40        error = platform_device_add_resources(pd, &cobalt_buttons_resource, 1);
  41        if (error)
  42                goto err_free_device;
  43
  44        error = platform_device_add(pd);
  45        if (error)
  46                goto err_free_device;
  47
  48        return 0;
  49
  50 err_free_device:
  51        platform_device_put(pd);
  52        return error;
  53}
  54device_initcall(cobalt_add_buttons);
  55