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 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/