1 files changed, 49 insertions, 0 deletions
diff --git a/arch/arm/mach-highbank/pm.c b/arch/arm/mach-highbank/pm.c
new file mode 100644
index 000000000..561941bae
--- /dev/null
+++ b/arch/arm/mach-highbank/pm.c
@@ -0,0 +1,49 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright 2011 Calxeda, Inc.
+ */
+
+#include <linux/cpu_pm.h>
+#include <linux/init.h>
+#include <linux/psci.h>
+#include <linux/suspend.h>
+
+#include <asm/suspend.h>
+
+#include <uapi/linux/psci.h>
+
+#define HIGHBANK_SUSPEND_PARAM \
+	((0 << PSCI_0_2_POWER_STATE_ID_SHIFT) | \
+	 (1 << PSCI_0_2_POWER_STATE_AFFL_SHIFT) | \
+	 (PSCI_POWER_STATE_TYPE_POWER_DOWN << PSCI_0_2_POWER_STATE_TYPE_SHIFT))
+
+static int highbank_suspend_finish(unsigned long val)
+{
+	return psci_ops.cpu_suspend(HIGHBANK_SUSPEND_PARAM, __pa(cpu_resume));
+}
+
+static int highbank_pm_enter(suspend_state_t state)
+{
+	cpu_pm_enter();
+	cpu_cluster_pm_enter();
+
+	cpu_suspend(0, highbank_suspend_finish);
+
+	cpu_cluster_pm_exit();
+	cpu_pm_exit();
+
+	return 0;
+}
+
+static const struct platform_suspend_ops highbank_pm_ops = {
+	.enter = highbank_pm_enter,
+	.valid = suspend_valid_only_mem,
+};
+
+void __init highbank_pm_init(void)
+{
+	if (!psci_ops.cpu_suspend)
+		return;
+
+	suspend_set_ops(&highbank_pm_ops);
+}