| Lorenzo Pieralisi | d64f84f | 2014-07-17 10:30:07 +0100 | [diff] [blame^] | 1 | /* |
| 2 | * ARM64 CPU idle arch support |
| 3 | * |
| 4 | * Copyright (C) 2014 ARM Ltd. |
| 5 | * Author: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> |
| 6 | * |
| 7 | * This program is free software; you can redistribute it and/or modify |
| 8 | * it under the terms of the GNU General Public License version 2 as |
| 9 | * published by the Free Software Foundation. |
| 10 | */ |
| 11 | |
| 12 | #include <linux/of.h> |
| 13 | #include <linux/of_device.h> |
| 14 | |
| 15 | #include <asm/cpuidle.h> |
| 16 | #include <asm/cpu_ops.h> |
| 17 | |
| 18 | int cpu_init_idle(unsigned int cpu) |
| 19 | { |
| 20 | int ret = -EOPNOTSUPP; |
| 21 | struct device_node *cpu_node = of_cpu_device_node_get(cpu); |
| 22 | |
| 23 | if (!cpu_node) |
| 24 | return -ENODEV; |
| 25 | |
| 26 | if (cpu_ops[cpu] && cpu_ops[cpu]->cpu_init_idle) |
| 27 | ret = cpu_ops[cpu]->cpu_init_idle(cpu_node, cpu); |
| 28 | |
| 29 | of_node_put(cpu_node); |
| 30 | return ret; |
| 31 | } |