LXR linux/drivers/sh/pm

   1/*
   2 * Runtime PM support code
   3 *
   4 *  Copyright (C) 2009-2010 Magnus Damm
   5 *
   6 * This file is subject to the terms and conditions of the GNU General Public
   7 * License.  See the file "COPYING" in the main directory of this archive
   8 * for more details.
   9 */
  10
  11#include <linux/init.h>
  12#include <linux/kernel.h>
  13#include <linux/io.h>
  14#include <linux/pm_runtime.h>
  15#include <linux/pm_domain.h>
  16#include <linux/pm_clock.h>
  17#include <linux/platform_device.h>
  18#include <linux/clk.h>
  19#include <linux/sh_clk.h>
  20#include <linux/bitmap.h>
  21#include <linux/slab.h>
  22
  23static struct dev_pm_domain default_pm_domain = {
  24        .ops = {
  25                USE_PM_CLK_RUNTIME_OPS
  26                USE_PLATFORM_PM_SLEEP_OPS
  27        },
  28};
  29
  30static struct pm_clk_notifier_block platform_bus_notifier = {
  31        .pm_domain = &default_pm_domain,
  32        .con_ids = { NULL, },
  33};
  34
  35static int __init sh_pm_runtime_init(void)
  36{
  37        if (IS_ENABLED(CONFIG_ARCH_SHMOBILE_MULTI)) {
  38                if (!of_find_compatible_node(NULL, NULL,
  39                                             "renesas,cpg-mstp-clocks"))
  40                        return 0;
  41                if (IS_ENABLED(CONFIG_PM_GENERIC_DOMAINS_OF) &&
  42                    of_find_node_with_property(NULL, "#power-domain-cells"))
  43                        return 0;
  44        }
  45
  46        pm_clk_add_notifier(&platform_bus_type, &platform_bus_notifier);
  47        return 0;
  48}
  49core_initcall(sh_pm_runtime_init);
  50