arch/arm/mach-omap1/pm_bus.c

   1 /*
   2  * Runtime PM support code for OMAP1
   3  *
   4  * Author: Kevin Hilman, Deep Root Systems, LLC
   5  *
   6  * Copyright (C) 2010 Texas Instruments, Inc.
   7  *
   8  * This file is licensed under the terms of the GNU General Public
   9  * License version 2. This program is licensed "as is" without any
  10  * warranty of any kind, whether express or implied.
  11  */
  12 #include <linux/init.h>
  13 #include <linux/kernel.h>
  14 #include <linux/io.h>
  15 #include <linux/pm_runtime.h>
  16 #include <linux/pm_clock.h>
  17 #include <linux/platform_device.h>
  18 #include <linux/mutex.h>
  19 #include <linux/clk.h>
  20 #include <linux/err.h>
  21
  22 #include "soc.h"
  23
  24 static struct dev_pm_domain default_pm_domain = {
  25         .ops = {
  26                 USE_PM_CLK_RUNTIME_OPS
  27                 USE_PLATFORM_PM_SLEEP_OPS
  28         },
  29 };
  30
  31 static struct pm_clk_notifier_block platform_bus_notifier = {
  32         .pm_domain = &default_pm_domain,
  33         .con_ids = { "ick", "fck", NULL, },
  34 };
  35
  36 static int __init omap1_pm_runtime_init(void)
  37 {
  38         if (!cpu_class_is_omap1())
  39                 return -ENODEV;
  40
  41         pm_clk_add_notifier(&platform_bus_type, &platform_bus_notifier);
  42
  43         return 0;
  44 }
  45 core_initcall(omap1_pm_runtime_init);
  46