1 /* 2 * Runtime PM support code for DaVinci 3 * 4 * Author: Kevin Hilman 5 * 6 * Copyright (C) 2012 Texas Instruments, Inc. 7 * 8 * This file is licensed under the terms of the GNU General Public 9 * License version 2. This program is licensed "as is" without any 10 * warranty of any kind, whether express or implied. 11 */ 12 #include <linux/init.h> 13 #include <linux/pm_runtime.h> 14 #include <linux/pm_clock.h> 15 #include <linux/platform_device.h> 16 #include <linux/of.h> 17 18 static struct dev_pm_domain davinci_pm_domain = { 19 .ops = { 20 USE_PM_CLK_RUNTIME_OPS 21 USE_PLATFORM_PM_SLEEP_OPS 22 }, 23 }; 24 25 static struct pm_clk_notifier_block platform_bus_notifier = { 26 .pm_domain = &davinci_pm_domain, 27 .con_ids = { "fck", "master", "slave", NULL }, 28 }; 29 30 static int __init davinci_pm_runtime_init(void) 31 { 32 if (of_have_populated_dt()) 33 return 0; 34 35 /* Use pm_clk as fallback if we're not using genpd. */ 36 pm_clk_add_notifier(&platform_bus_type, &platform_bus_notifier); 37 38 return 0; 39 } 40 core_initcall(davinci_pm_runtime_init); 41