arm_big_little.h 1.3 KB

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  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. #include <linux/cpufreq.h>
  22. #include <linux/device.h>
  23. #include <linux/types.h>
  24. struct cpufreq_arm_bL_ops {
  25. char name[CPUFREQ_NAME_LEN];
  26. /*
  27. * This must set opp table for cpu_dev in a similar way as done by
  28. * dev_pm_opp_of_add_table().
  29. */
  30. int (*init_opp_table)(const struct cpumask *cpumask);
  31. /* Optional */
  32. int (*get_transition_latency)(struct device *cpu_dev);
  33. void (*free_opp_table)(const struct cpumask *cpumask);
  34. };
  35. int bL_cpufreq_register(struct cpufreq_arm_bL_ops *ops);
  36. void bL_cpufreq_unregister(struct cpufreq_arm_bL_ops *ops);
  37. #endif /* CPUFREQ_ARM_BIG_LITTLE_H */