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drivers
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cpuidle
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cpuidle.h

cpuidle.h 2.0 KB
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  1. /*
    2. 

  2.  * cpuidle.h - The internal header file
    3. 

  3.  */
    4. 

  4. 

  5. #ifndef __DRIVER_CPUIDLE_H
    6. 

  6. #define __DRIVER_CPUIDLE_H
    7. 

  7. 

  8. /* For internal use only */
    9. 

  9. extern struct cpuidle_governor *cpuidle_curr_governor;
    10. 

  10. extern struct list_head cpuidle_governors;
    11. 

  11. extern struct list_head cpuidle_detected_devices;
    12. 

  12. extern struct mutex cpuidle_lock;
    13. 

  13. extern spinlock_t cpuidle_driver_lock;
    14. 

  14. extern int cpuidle_disabled(void);
    15. 

  15. extern int cpuidle_enter_state(struct cpuidle_device *dev,
    16. 

  16. 		struct cpuidle_driver *drv, int next_state);
    17. 

  17. 

  18. /* idle loop */
    19. 

  19. extern void cpuidle_install_idle_handler(void);
    20. 

  20. extern void cpuidle_uninstall_idle_handler(void);
    21. 

  21. 

  22. /* governors */
    23. 

  23. extern int cpuidle_switch_governor(struct cpuidle_governor *gov);
    24. 

  24. 

  25. /* sysfs */
    26. 

  26. 

  27. struct device;
    28. 

  28. 

  29. extern int cpuidle_add_interface(struct device *dev);
    30. 

  30. extern void cpuidle_remove_interface(struct device *dev);
    31. 

  31. extern int cpuidle_add_device_sysfs(struct cpuidle_device *device);
    32. 

  32. extern void cpuidle_remove_device_sysfs(struct cpuidle_device *device);
    33. 

  33. extern int cpuidle_add_sysfs(struct cpuidle_device *dev);
    34. 

  34. extern void cpuidle_remove_sysfs(struct cpuidle_device *dev);
    35. 

  35. 

  36. #ifdef CONFIG_ARCH_NEEDS_CPU_IDLE_COUPLED
    37. 

  37. bool cpuidle_state_is_coupled(struct cpuidle_driver *drv, int state);
    38. 

  38. int cpuidle_coupled_state_verify(struct cpuidle_driver *drv);
    39. 

  39. int cpuidle_enter_state_coupled(struct cpuidle_device *dev,
    40. 

  40. 		struct cpuidle_driver *drv, int next_state);
    41. 

  41. int cpuidle_coupled_register_device(struct cpuidle_device *dev);
    42. 

  42. void cpuidle_coupled_unregister_device(struct cpuidle_device *dev);
    43. 

  43. #else
    44. 

  44. static inline
    45. 

  45. bool cpuidle_state_is_coupled(struct cpuidle_driver *drv, int state)
    46. 

  46. {
    47. 

  47. 	return false;
    48. 

  48. }
    49. 

  49. 

  50. static inline int cpuidle_coupled_state_verify(struct cpuidle_driver *drv)
    51. 

  51. {
    52. 

  52. 	return 0;
    53. 

  53. }
    54. 

  54. 

  55. static inline int cpuidle_enter_state_coupled(struct cpuidle_device *dev,
    56. 

  56. 		struct cpuidle_driver *drv, int next_state)
    57. 

  57. {
    58. 

  58. 	return -1;
    59. 

  59. }
    60. 

  60. 

  61. static inline int cpuidle_coupled_register_device(struct cpuidle_device *dev)
    62. 

  62. {
    63. 

  63. 	return 0;
    64. 

  64. }
    65. 

  65. 

  66. static inline void cpuidle_coupled_unregister_device(struct cpuidle_device *dev)
    67. 

  67. {
    68. 

  68. }
    69. 

  69. #endif
    70. 

  70. 

  71. #endif /* __DRIVER_CPUIDLE_H */
    72.