/* * r8a7740 power management support * * Copyright (C) 2012 Renesas Solutions Corp. * Copyright (C) 2012 Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> * * This file is subject to the terms and conditions of the GNU General Public * License. See the file "COPYING" in the main directory of this archive * for more details. */ #include <linux/console.h> #include <linux/suspend.h> #include <mach/pm-rmobile.h> #include <mach/common.h> #ifdef CONFIG_PM static int r8a7740_pd_a4s_suspend(void) { /* * The A4S domain contains the CPU core and therefore it should * only be turned off if the CPU is in use. */ return -EBUSY; } static int r8a7740_pd_a3sp_suspend(void) { /* * Serial consoles make use of SCIF hardware located in A3SP, * keep such power domain on if "no_console_suspend" is set. */ return console_suspend_enabled ? 0 : -EBUSY; } static struct rmobile_pm_domain r8a7740_pm_domains[] = { { .genpd.name = "A4S", .bit_shift = 10, .gov = &pm_domain_always_on_gov, .no_debug = true, .suspend = r8a7740_pd_a4s_suspend, }, { .genpd.name = "A3SP", .bit_shift = 11, .gov = &pm_domain_always_on_gov, .no_debug = true, .suspend = r8a7740_pd_a3sp_suspend, }, { .genpd.name = "A4LC", .bit_shift = 1, }, }; void __init r8a7740_init_pm_domains(void) { rmobile_init_domains(r8a7740_pm_domains, ARRAY_SIZE(r8a7740_pm_domains)); pm_genpd_add_subdomain_names("A4S", "A3SP"); } #endif /* CONFIG_PM */ #ifdef CONFIG_SUSPEND static int r8a7740_enter_suspend(suspend_state_t suspend_state) { cpu_do_idle(); return 0; } static void r8a7740_suspend_init(void) { shmobile_suspend_ops.enter = r8a7740_enter_suspend; } #else static void r8a7740_suspend_init(void) {} #endif void __init r8a7740_pm_init(void) { r8a7740_suspend_init(); }