LXR linux/arch/arm/mach-davinci/pm

   1/*
   2 * Runtime PM support code for DaVinci
   3 *
   4 * Author: Kevin Hilman
   5 *
   6 * Copyright (C) 2012 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/pm_runtime.h>
  14#include <linux/pm_clock.h>
  15#include <linux/platform_device.h>
  16#include <linux/of.h>
  17
  18static struct dev_pm_domain davinci_pm_domain = {
  19        .ops = {
  20                USE_PM_CLK_RUNTIME_OPS
  21                USE_PLATFORM_PM_SLEEP_OPS
  22        },
  23};
  24
  25static struct pm_clk_notifier_block platform_bus_notifier = {
  26        .pm_domain = &davinci_pm_domain,
  27        .con_ids = { "fck", "master", "slave", NULL },
  28};
  29
  30static int __init davinci_pm_runtime_init(void)
  31{
  32        if (of_have_populated_dt())
  33                return 0;
  34
  35        /* Use pm_clk as fallback if we're not using genpd. */
  36        pm_clk_add_notifier(&platform_bus_type, &platform_bus_notifier);
  37
  38        return 0;
  39}
  40core_initcall(davinci_pm_runtime_init);
  41