arch/arm/mach-omap1/pm_bus.c

   1 // SPDX-License-Identifier: GPL-2.0-only
   2 /*
   3  * Runtime PM support code for OMAP1
   4  *
   5  * Author: Kevin Hilman, Deep Root Systems, LLC
   6  *
   7  * Copyright (C) 2010 Texas Instruments, Inc.
   8  */
   9 #include <linux/init.h>
  10 #include <linux/kernel.h>
  11 #include <linux/io.h>
  12 #include <linux/pm_runtime.h>
  13 #include <linux/pm_clock.h>
  14 #include <linux/platform_device.h>
  15 #include <linux/mutex.h>
  16 #include <linux/clk.h>
  17 #include <linux/err.h>
  18
  19 #include "soc.h"
  20
  21 static struct dev_pm_domain default_pm_domain = {
  22         .ops = {
  23                 USE_PM_CLK_RUNTIME_OPS
  24                 USE_PLATFORM_PM_SLEEP_OPS
  25         },
  26 };
  27
  28 static struct pm_clk_notifier_block platform_bus_notifier = {
  29         .pm_domain = &default_pm_domain,
  30         .con_ids = { "ick", "fck", NULL, },
  31 };
  32
  33 static int __init omap1_pm_runtime_init(void)
  34 {
  35         if (!cpu_class_is_omap1())
  36                 return -ENODEV;
  37
  38         pm_clk_add_notifier(&platform_bus_type, &platform_bus_notifier);
  39
  40         return 0;
  41 }
  42 core_initcall(omap1_pm_runtime_init);