/* * 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 pm_runtime_suspend(dev); } 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);