/* * Runtime PM support code for DaVinci * * Author: Kevin Hilman * * Copyright (C) 2012 Texas Instruments, Inc. * * This file is licensed under the terms of the GNU General Public * License version 2. This program is licensed "as is" without any * warranty of any kind, whether express or implied. */ #include <linux/init.h> #include <linux/pm_runtime.h> #include <linux/pm_clock.h> #include <linux/platform_device.h> #ifdef CONFIG_PM_RUNTIME static int davinci_pm_runtime_suspend(struct device *dev) { int ret; dev_dbg(dev, "%s\n", __func__); ret = pm_generic_runtime_suspend(dev); if (ret) return ret; ret = pm_clk_suspend(dev); if (ret) { pm_generic_runtime_resume(dev); return ret; } return 0; } static int davinci_pm_runtime_resume(struct device *dev) { dev_dbg(dev, "%s\n", __func__); pm_clk_resume(dev); return pm_generic_runtime_resume(dev); } #endif static struct dev_pm_domain davinci_pm_domain = { .ops = { SET_RUNTIME_PM_OPS(davinci_pm_runtime_suspend, davinci_pm_runtime_resume, NULL) USE_PLATFORM_PM_SLEEP_OPS }, }; static struct pm_clk_notifier_block platform_bus_notifier = { .pm_domain = &davinci_pm_domain, .con_ids = { "fck", NULL, }, }; static int __init davinci_pm_runtime_init(void) { pm_clk_add_notifier(&platform_bus_type, &platform_bus_notifier); return 0; } core_initcall(davinci_pm_runtime_init);