1*4882a593Smuzhiyun /* 2*4882a593Smuzhiyun * Runtime PM support code for DaVinci 3*4882a593Smuzhiyun * 4*4882a593Smuzhiyun * Author: Kevin Hilman 5*4882a593Smuzhiyun * 6*4882a593Smuzhiyun * Copyright (C) 2012 Texas Instruments, Inc. 7*4882a593Smuzhiyun * 8*4882a593Smuzhiyun * This file is licensed under the terms of the GNU General Public 9*4882a593Smuzhiyun * License version 2. This program is licensed "as is" without any 10*4882a593Smuzhiyun * warranty of any kind, whether express or implied. 11*4882a593Smuzhiyun */ 12*4882a593Smuzhiyun #include <linux/init.h> 13*4882a593Smuzhiyun #include <linux/pm_runtime.h> 14*4882a593Smuzhiyun #include <linux/pm_clock.h> 15*4882a593Smuzhiyun #include <linux/platform_device.h> 16*4882a593Smuzhiyun #include <linux/of.h> 17*4882a593Smuzhiyun 18*4882a593Smuzhiyun static struct dev_pm_domain davinci_pm_domain = { 19*4882a593Smuzhiyun .ops = { 20*4882a593Smuzhiyun USE_PM_CLK_RUNTIME_OPS 21*4882a593Smuzhiyun USE_PLATFORM_PM_SLEEP_OPS 22*4882a593Smuzhiyun }, 23*4882a593Smuzhiyun }; 24*4882a593Smuzhiyun 25*4882a593Smuzhiyun static struct pm_clk_notifier_block platform_bus_notifier = { 26*4882a593Smuzhiyun .pm_domain = &davinci_pm_domain, 27*4882a593Smuzhiyun .con_ids = { "fck", "master", "slave", NULL }, 28*4882a593Smuzhiyun }; 29*4882a593Smuzhiyun davinci_pm_runtime_init(void)30*4882a593Smuzhiyunstatic int __init davinci_pm_runtime_init(void) 31*4882a593Smuzhiyun { 32*4882a593Smuzhiyun if (of_have_populated_dt()) 33*4882a593Smuzhiyun return 0; 34*4882a593Smuzhiyun 35*4882a593Smuzhiyun /* Use pm_clk as fallback if we're not using genpd. */ 36*4882a593Smuzhiyun pm_clk_add_notifier(&platform_bus_type, &platform_bus_notifier); 37*4882a593Smuzhiyun 38*4882a593Smuzhiyun return 0; 39*4882a593Smuzhiyun } 40*4882a593Smuzhiyun core_initcall(davinci_pm_runtime_init); 41