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
26 struct cpufreq_arm_bL_ops {
27 char name[CPUFREQ_NAME_LEN];
28
29 /*
30 * This must set opp table for cpu_dev in a similar way as done by
31 * dev_pm_opp_of_add_table().
32 */
33 int (*init_opp_table)(const struct cpumask *cpumask);
34
35 /* Optional */
36 int (*get_transition_latency)(struct device *cpu_dev);
37 void (*free_opp_table)(const struct cpumask *cpumask);
38 };
39
40 int bL_cpufreq_register(const struct cpufreq_arm_bL_ops *ops);
41 void bL_cpufreq_unregister(const struct cpufreq_arm_bL_ops *ops);
42
43 #endif /* CPUFREQ_ARM_BIG_LITTLE_H */