1 /* 2 * Runtime PM support code 3 * 4 * Copyright (C) 2009-2010 Magnus Damm 5 * 6 * This file is subject to the terms and conditions of the GNU General Public 7 * License. See the file "COPYING" in the main directory of this archive 8 * for more details. 9 */ 10 11 #include <linux/init.h> 12 #include <linux/kernel.h> 13 #include <linux/io.h> 14 #include <linux/pm_runtime.h> 15 #include <linux/pm_domain.h> 16 #include <linux/pm_clock.h> 17 #include <linux/platform_device.h> 18 #include <linux/clk.h> 19 #include <linux/sh_clk.h> 20 #include <linux/bitmap.h> 21 #include <linux/slab.h> 22 23 static struct dev_pm_domain default_pm_domain = { 24 .ops = { 25 USE_PM_CLK_RUNTIME_OPS 26 USE_PLATFORM_PM_SLEEP_OPS 27 }, 28 }; 29 30 static struct pm_clk_notifier_block platform_bus_notifier = { 31 .pm_domain = &default_pm_domain, 32 .con_ids = { NULL, }, 33 }; 34 35 static int __init sh_pm_runtime_init(void) 36 { 37 if (IS_ENABLED(CONFIG_OF) && IS_ENABLED(CONFIG_ARCH_SHMOBILE)) { 38 if (!of_find_compatible_node(NULL, NULL, 39 "renesas,cpg-mstp-clocks")) 40 return 0; 41 if (IS_ENABLED(CONFIG_PM_GENERIC_DOMAINS_OF) && 42 of_find_node_with_property(NULL, "#power-domain-cells")) 43 return 0; 44 } 45 46 pm_clk_add_notifier(&platform_bus_type, &platform_bus_notifier); 47 return 0; 48 } 49 core_initcall(sh_pm_runtime_init); 50