1 files changed, 82 insertions, 0 deletions
diff --git a/arch/arm/mach-shmobile/pm-r8a7740.c b/arch/arm/mach-shmobile/pm-r8a7740.c
new file mode 100644
index 00000000000..40b87aa1d44
--- /dev/null
+++ b/arch/arm/mach-shmobile/pm-r8a7740.c
@@ -0,0 +1,82 @@
+/*
+ * 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();
+}