/* * ARM64 CPU idle arch support * * Copyright (C) 2014 ARM Ltd. * Author: Lorenzo Pieralisi <lorenzo.pieralisi@arm.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/of.h> #include <linux/of_device.h> #include <asm/cpuidle.h> #include <asm/cpu_ops.h> int cpu_init_idle(unsigned int cpu) { int ret = -EOPNOTSUPP; struct device_node *cpu_node = of_cpu_device_node_get(cpu); if (!cpu_node) return -ENODEV; if (cpu_ops[cpu] && cpu_ops[cpu]->cpu_init_idle) ret = cpu_ops[cpu]->cpu_init_idle(cpu_node, cpu); of_node_put(cpu_node); return ret; }