2 * Runtime PM support code
4 * Copyright (C) 2009-2010 Magnus Damm
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
11 #include <linux/init.h>
12 #include <linux/kernel.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>
23 #ifdef CONFIG_PM_RUNTIME
25 static int default_platform_runtime_idle(struct device *dev)
27 /* suspend synchronously to disable clocks immediately */
31 static struct dev_pm_domain default_pm_domain = {
33 .runtime_suspend = pm_clk_suspend,
34 .runtime_resume = pm_clk_resume,
35 .runtime_idle = default_platform_runtime_idle,
36 USE_PLATFORM_PM_SLEEP_OPS
40 #define DEFAULT_PM_DOMAIN_PTR (&default_pm_domain)
44 #define DEFAULT_PM_DOMAIN_PTR NULL
46 #endif /* CONFIG_PM_RUNTIME */
48 static struct pm_clk_notifier_block platform_bus_notifier = {
49 .pm_domain = DEFAULT_PM_DOMAIN_PTR,
53 static bool default_pm_on;
55 static int __init sh_pm_runtime_init(void)
57 if (IS_ENABLED(CONFIG_ARCH_SHMOBILE_MULTI)) {
58 if (!of_machine_is_compatible("renesas,emev2") &&
59 !of_machine_is_compatible("renesas,r7s72100") &&
60 !of_machine_is_compatible("renesas,r8a73a4") &&
61 !of_machine_is_compatible("renesas,r8a7740") &&
62 !of_machine_is_compatible("renesas,r8a7778") &&
63 !of_machine_is_compatible("renesas,r8a7779") &&
64 !of_machine_is_compatible("renesas,r8a7790") &&
65 !of_machine_is_compatible("renesas,r8a7791") &&
66 !of_machine_is_compatible("renesas,sh7372") &&
67 !of_machine_is_compatible("renesas,sh73a0"))
72 pm_clk_add_notifier(&platform_bus_type, &platform_bus_notifier);
75 core_initcall(sh_pm_runtime_init);
77 static int __init sh_pm_runtime_late_init(void)
80 pm_genpd_poweroff_unused();
83 late_initcall(sh_pm_runtime_late_init);