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

   1/*
   2 *  Registration of Cobalt RTC 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#include <linux/errno.h>
  21#include <linux/init.h>
  22#include <linux/ioport.h>
  23#include <linux/mc146818rtc.h>
  24#include <linux/platform_device.h>
  25
  26static struct resource cobalt_rtc_resource[] __initdata = {
  27        {
  28                .start  = 0x70,
  29                .end    = 0x77,
  30                .flags  = IORESOURCE_IO,
  31        },
  32        {
  33                .start  = RTC_IRQ,
  34                .end    = RTC_IRQ,
  35                .flags  = IORESOURCE_IRQ,
  36        },
  37};
  38
  39static __init int cobalt_rtc_add(void)
  40{
  41        struct platform_device *pdev;
  42        int retval;
  43
  44        pdev = platform_device_alloc("rtc_cmos", -1);
  45        if (!pdev)
  46                return -ENOMEM;
  47
  48        retval = platform_device_add_resources(pdev, cobalt_rtc_resource,
  49                                               ARRAY_SIZE(cobalt_rtc_resource));
  50        if (retval)
  51                goto err_free_device;
  52
  53        retval = platform_device_add(pdev);
  54        if (retval)
  55                goto err_free_device;
  56
  57        return 0;
  58
  59err_free_device:
  60        platform_device_put(pdev);
  61
  62        return retval;
  63}
  64device_initcall(cobalt_rtc_add);
  65