pm_runtime.c
1.44 KB
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/*
* Runtime PM support code
*
* Copyright (C) 2009-2010 Magnus Damm
*
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file "COPYING" in the main directory of this archive
* for more details.
*/
#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/io.h>
#include <linux/pm_runtime.h>
#include <linux/pm_domain.h>
#include <linux/pm_clock.h>
#include <linux/platform_device.h>
#include <linux/clk.h>
#include <linux/sh_clk.h>
#include <linux/bitmap.h>
#include <linux/slab.h>
#ifdef CONFIG_PM_RUNTIME
static int default_platform_runtime_idle(struct device *dev)
{
/* suspend synchronously to disable clocks immediately */
return 0;
}
static struct dev_pm_domain default_pm_domain = {
.ops = {
.runtime_suspend = pm_clk_suspend,
.runtime_resume = pm_clk_resume,
.runtime_idle = default_platform_runtime_idle,
USE_PLATFORM_PM_SLEEP_OPS
},
};
#define DEFAULT_PM_DOMAIN_PTR (&default_pm_domain)
#else
#define DEFAULT_PM_DOMAIN_PTR NULL
#endif /* CONFIG_PM_RUNTIME */
static struct pm_clk_notifier_block platform_bus_notifier = {
.pm_domain = DEFAULT_PM_DOMAIN_PTR,
.con_ids = { NULL, },
};
static int __init sh_pm_runtime_init(void)
{
pm_clk_add_notifier(&platform_bus_type, &platform_bus_notifier);
return 0;
}
core_initcall(sh_pm_runtime_init);
static int __init sh_pm_runtime_late_init(void)
{
pm_genpd_poweroff_unused();
return 0;
}
late_initcall(sh_pm_runtime_late_init);