arch/mips/cobalt/rtc.c

   1 // SPDX-License-Identifier: GPL-2.0-or-later
   2 /*
   3  *  Registration of Cobalt RTC platform device.
   4  *
   5  *  Copyright (C) 2007  Yoichi Yuasa <yuasa@linux-mips.org>
   6  */
   7 #include <linux/errno.h>
   8 #include <linux/init.h>
   9 #include <linux/ioport.h>
  10 #include <linux/mc146818rtc.h>
  11 #include <linux/platform_device.h>
  12
  13 static struct resource cobalt_rtc_resource[] __initdata = {
  14         {
  15                 .start  = 0x70,
  16                 .end    = 0x77,
  17                 .flags  = IORESOURCE_IO,
  18         },
  19         {
  20                 .start  = RTC_IRQ,
  21                 .end    = RTC_IRQ,
  22                 .flags  = IORESOURCE_IRQ,
  23         },
  24 };
  25
  26 static __init int cobalt_rtc_add(void)
  27 {
  28         struct platform_device *pdev;
  29         int retval;
  30
  31         pdev = platform_device_alloc("rtc_cmos", -1);
  32         if (!pdev)
  33                 return -ENOMEM;
  34
  35         retval = platform_device_add_resources(pdev, cobalt_rtc_resource,
  36                                                ARRAY_SIZE(cobalt_rtc_resource));
  37         if (retval)
  38                 goto err_free_device;
  39
  40         retval = platform_device_add(pdev);
  41         if (retval)
  42                 goto err_free_device;
  43
  44         return 0;
  45
  46 err_free_device:
  47         platform_device_put(pdev);
  48
  49         return retval;
  50 }
  51 device_initcall(cobalt_rtc_add);