2 * r8a7740 power management support
4 * Copyright (C) 2012 Renesas Solutions Corp.
5 * Copyright (C) 2012 Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
7 * This file is subject to the terms and conditions of the GNU General Public
8 * License. See the file "COPYING" in the main directory of this archive
11 #include <linux/console.h>
12 #include <linux/suspend.h>
14 #include "pm-rmobile.h"
16 #if defined(CONFIG_PM) && !defined(CONFIG_ARCH_MULTIPLATFORM)
17 static int r8a7740_pd_a4s_suspend(void)
20 * The A4S domain contains the CPU core and therefore it should
21 * only be turned off if the CPU is not in use.
26 static int r8a7740_pd_a3sp_suspend(void)
29 * Serial consoles make use of SCIF hardware located in A3SP,
30 * keep such power domain on if "no_console_suspend" is set.
32 return console_suspend_enabled ? 0 : -EBUSY;
35 static struct rmobile_pm_domain r8a7740_pm_domains[] = {
42 .gov = &pm_domain_always_on_gov,
44 .suspend = r8a7740_pd_a4s_suspend,
48 .gov = &pm_domain_always_on_gov,
50 .suspend = r8a7740_pd_a3sp_suspend,
54 void __init r8a7740_init_pm_domains(void)
56 rmobile_init_domains(r8a7740_pm_domains, ARRAY_SIZE(r8a7740_pm_domains));
57 pm_genpd_add_subdomain_names("A4S", "A3SP");
59 #endif /* CONFIG_PM && !CONFIG_ARCH_MULTIPLATFORM */
62 static int r8a7740_enter_suspend(suspend_state_t suspend_state)
68 static void r8a7740_suspend_init(void)
70 shmobile_suspend_ops.enter = r8a7740_enter_suspend;
73 static void r8a7740_suspend_init(void) {}
76 void __init r8a7740_pm_init(void)
78 r8a7740_suspend_init();