arm_big_little.h revision 4521adf85cd18e4652b9285846835f74418bd88f 
1/*
2 * ARM big.LITTLE platform's CPUFreq header file
3 *
4 * Copyright (C) 2013 ARM Ltd.
5 * Sudeep KarkadaNagesha <sudeep.karkadanagesha@arm.com>
6 *
7 * Copyright (C) 2013 Linaro.
8 * Viresh Kumar <viresh.kumar@linaro.org>
9 *
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License version 2 as
12 * published by the Free Software Foundation.
13 *
14 * This program is distributed "as is" WITHOUT ANY WARRANTY of any
15 * kind, whether express or implied; without even the implied warranty
16 * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
18 */
19#ifndef CPUFREQ_ARM_BIG_LITTLE_H
20#define CPUFREQ_ARM_BIG_LITTLE_H
21
22#include <linux/cpufreq.h>
23#include <linux/device.h>
24#include <linux/types.h>
25
26struct cpufreq_arm_bL_ops {
27	char name[CPUFREQ_NAME_LEN];
28	int (*get_transition_latency)(struct device *cpu_dev);
29
30	/*
31	 * This must set opp table for cpu_dev in a similar way as done by
32	 * of_init_opp_table().
33	 */
34	int (*init_opp_table)(struct device *cpu_dev);
35};
36
37static inline int cpu_to_cluster(int cpu)
38{
39	return topology_physical_package_id(cpu);
40}
41
42int bL_cpufreq_register(struct cpufreq_arm_bL_ops *ops);
43void bL_cpufreq_unregister(struct cpufreq_arm_bL_ops *ops);
44
45#endif /* CPUFREQ_ARM_BIG_LITTLE_H */
46