18c2ecf20Sopenharmony_ci/* 28c2ecf20Sopenharmony_ci * Runtime PM support code for DaVinci 38c2ecf20Sopenharmony_ci * 48c2ecf20Sopenharmony_ci * Author: Kevin Hilman 58c2ecf20Sopenharmony_ci * 68c2ecf20Sopenharmony_ci * Copyright (C) 2012 Texas Instruments, Inc. 78c2ecf20Sopenharmony_ci * 88c2ecf20Sopenharmony_ci * This file is licensed under the terms of the GNU General Public 98c2ecf20Sopenharmony_ci * License version 2. This program is licensed "as is" without any 108c2ecf20Sopenharmony_ci * warranty of any kind, whether express or implied. 118c2ecf20Sopenharmony_ci */ 128c2ecf20Sopenharmony_ci#include <linux/init.h> 138c2ecf20Sopenharmony_ci#include <linux/pm_runtime.h> 148c2ecf20Sopenharmony_ci#include <linux/pm_clock.h> 158c2ecf20Sopenharmony_ci#include <linux/platform_device.h> 168c2ecf20Sopenharmony_ci#include <linux/of.h> 178c2ecf20Sopenharmony_ci 188c2ecf20Sopenharmony_cistatic struct dev_pm_domain davinci_pm_domain = { 198c2ecf20Sopenharmony_ci .ops = { 208c2ecf20Sopenharmony_ci USE_PM_CLK_RUNTIME_OPS 218c2ecf20Sopenharmony_ci USE_PLATFORM_PM_SLEEP_OPS 228c2ecf20Sopenharmony_ci }, 238c2ecf20Sopenharmony_ci}; 248c2ecf20Sopenharmony_ci 258c2ecf20Sopenharmony_cistatic struct pm_clk_notifier_block platform_bus_notifier = { 268c2ecf20Sopenharmony_ci .pm_domain = &davinci_pm_domain, 278c2ecf20Sopenharmony_ci .con_ids = { "fck", "master", "slave", NULL }, 288c2ecf20Sopenharmony_ci}; 298c2ecf20Sopenharmony_ci 308c2ecf20Sopenharmony_cistatic int __init davinci_pm_runtime_init(void) 318c2ecf20Sopenharmony_ci{ 328c2ecf20Sopenharmony_ci if (of_have_populated_dt()) 338c2ecf20Sopenharmony_ci return 0; 348c2ecf20Sopenharmony_ci 358c2ecf20Sopenharmony_ci /* Use pm_clk as fallback if we're not using genpd. */ 368c2ecf20Sopenharmony_ci pm_clk_add_notifier(&platform_bus_type, &platform_bus_notifier); 378c2ecf20Sopenharmony_ci 388c2ecf20Sopenharmony_ci return 0; 398c2ecf20Sopenharmony_ci} 408c2ecf20Sopenharmony_cicore_initcall(davinci_pm_runtime_init); 41