This patch implements cpuidle_ops using psci. After this patch, we can
use cpuidle-arm.c with psci backend for both arm and arm64.
Signed-off-by: Jisheng Zhang <jszh...@marvell.com>
---
arch/arm/kernel/Makefile | 1 +
arch/arm/kernel/psci_cpuidle.c | 29 +++++++++++++++++++++++++++++
2 files changed, 30 insertions(+)
create mode 100644 arch/arm/kernel/psci_cpuidle.c
diff --git a/arch/arm/kernel/Makefile b/arch/arm/kernel/Makefile
index 3b995f5..96383d8 100644
--- a/arch/arm/kernel/Makefile
+++ b/arch/arm/kernel/Makefile
@@ -91,6 +91,7 @@ obj-$(CONFIG_ARM_VIRT_EXT) += hyp-stub.o
ifeq ($(CONFIG_ARM_PSCI),y)
obj-y += psci-call.o
obj-$(CONFIG_SMP) += psci_smp.o
+obj-$(CONFIG_CPU_IDLE) += psci_cpuidle.o
endif
extra-y := $(head-y) vmlinux.lds
diff --git a/arch/arm/kernel/psci_cpuidle.c b/arch/arm/kernel/psci_cpuidle.c
new file mode 100644
index 0000000..ae85d97
--- /dev/null
+++ b/arch/arm/kernel/psci_cpuidle.c
@@ -0,0 +1,29 @@
+/*
+ * Copyright (C) 2015 Marvell Technology Group Ltd.
+ * Author: Jisheng Zhang <jszh...@marvell.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/cpuidle.h>
+#include <linux/psci.h>
+
+#include <asm/cpuidle.h>
+
+static int psci_cpuidle_suspend(int cpu, unsigned long arg)
+{
+ return cpu_psci_cpu_suspend(arg);
+}
+
+static int psci_cpuidle_init(struct device_node *node, int cpu)
+{
+ return cpu_psci_cpu_init_idle(cpu);
+}
+
+static struct cpuidle_ops psci_cpuidle_ops __initdata = {
+ .suspend = psci_cpuidle_suspend,
+ .init = psci_cpuidle_init,
+};
+CPUIDLE_METHOD_OF_DECLARE(psci_cpuidle, "psci", &psci_cpuidle_ops);
--
2.1.4
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