3  * devfreq: Generic Dynamic Voltage and Frequency Scaling (DVFS) Framework
18 /* DEVFREQ governor name */
25 /* DEVFREQ notifier interface */
32 /* DEVFREQ work timers */
39 struct devfreq;
44  * struct devfreq_dev_status - Data given from devfreq user device to
52  * @private_data:	An entry not specified by the devfreq framework.
75  * struct devfreq_dev_profile - Devfreq's user device profile
88  *			status to devfreq. Governors are recommended not to
91  *			devfreq.last_status.
94  * @exit:		An optional callback that is called when devfreq
95  *			is removing the devfreq object due to error or
97  *			has registered devfreq->nb at a notifier-head,
123  * struct devfreq_stats - Statistics of devfreq device behavior
124  * @total_trans:	Number of devfreq transitions.
125  * @trans_table:	Statistics of devfreq transitions.
126  * @time_in_state:	Statistics of devfreq states.
137  * struct devfreq - Device devfreq structure
138  * @node:	list node - contains the devices with devfreq that have been
140  * @lock:	a mutex to protect accessing devfreq.
141  * @dev:	device registered by devfreq class. dev.parent is the device
142  *		using devfreq.
143  * @profile:	device-specific devfreq profile
146  * @nb:		notifier block used to notify devfreq object that it should
147  *		reevaluate operable frequencies. Devfreq users may use
148  *		devfreq.nb to the corresponding register notifier call chain.
151  * @last_status:	devfreq user device info, performance statistics
152  * @data:	Private data of the governor. The devfreq framework does not
158  * @stop_polling:	 devfreq polling status of a device.
162  * @stats:	Statistics of devfreq device behavior
164  * @cdev:	Cooling device pointer if the devfreq has cooling property
168  * This structure stores the devfreq information for a given device.
170  * Note that when a governor accesses entries in struct devfreq in its
173  * struct mutex lock in struct devfreq. A governor may use this mutex
176 struct devfreq {  struct
220 struct devfreq *devfreq_add_device(struct device *dev,  argument
224 int devfreq_remove_device(struct devfreq *devfreq);
225 struct devfreq *devm_devfreq_add_device(struct device *dev,
229 void devm_devfreq_remove_device(struct device *dev, struct devfreq *devfreq);
232 int devfreq_suspend_device(struct devfreq *devfreq);
233 int devfreq_resume_device(struct devfreq *devfreq);
239 int update_devfreq(struct devfreq *devfreq);
241 /* Helper functions for devfreq user device driver with OPP. */
245 				struct devfreq *devfreq);
247 				struct devfreq *devfreq);
249 				struct devfreq *devfreq);
251 				struct devfreq *devfreq);
252 int devfreq_register_notifier(struct devfreq *devfreq,
255 int devfreq_unregister_notifier(struct devfreq *devfreq,
259 				struct devfreq *devfreq,
263 				struct devfreq *devfreq,
266 struct devfreq *devfreq_get_devfreq_by_node(struct device_node *node);
267 struct devfreq *devfreq_get_devfreq_by_phandle(struct device *dev,
272  * struct devfreq_simple_ondemand_data - ``void *data`` fed to struct devfreq
292  * struct devfreq_passive_data - ``void *data`` fed to struct devfreq
294  * @parent:	the devfreq instance of parent device.
298  *			by using the new frequency of parent devfreq device
300  *			If the devfreq device has the specific method to decide
302  * @this:	the devfreq instance of own device.
305  * The devfreq_passive_data have to set the devfreq instance of parent
307  * initialize the 'this' and 'nb' field because the devfreq core will handle
311 	/* Should set the devfreq instance of parent device */
312 	struct devfreq *parent;
315 	int (*get_target_freq)(struct devfreq *this, unsigned long *freq);
318 	struct devfreq *this;
324 static inline struct devfreq *devfreq_add_device(struct device *dev,  in devfreq_add_device()
332 static inline int devfreq_remove_device(struct devfreq *devfreq)  in devfreq_remove_device()  argument
337 static inline struct devfreq *devm_devfreq_add_device(struct device *dev,  in devm_devfreq_add_device()
346 					struct devfreq *devfreq)  in devm_devfreq_remove_device()  argument
350 static inline int devfreq_suspend_device(struct devfreq *devfreq)  in devfreq_suspend_device()  argument
355 static inline int devfreq_resume_device(struct devfreq *devfreq)  in devfreq_resume_device()  argument
370 					struct devfreq *devfreq)  in devfreq_register_opp_notifier()  argument
376 					struct devfreq *devfreq)  in devfreq_unregister_opp_notifier()  argument
382 					struct devfreq *devfreq)  in devm_devfreq_register_opp_notifier()  argument
388 					struct devfreq *devfreq)  in devm_devfreq_unregister_opp_notifier()  argument
392 static inline int devfreq_register_notifier(struct devfreq *devfreq,  in devfreq_register_notifier()  argument
399 static inline int devfreq_unregister_notifier(struct devfreq *devfreq,  in devfreq_unregister_notifier()  argument
407 					struct devfreq *devfreq,  in devm_devfreq_register_notifier()  argument
415 					struct devfreq *devfreq,  in devm_devfreq_unregister_notifier()  argument
421 static inline struct devfreq *devfreq_get_devfreq_by_node(struct device_node *node)  in devfreq_get_devfreq_by_node()
426 static inline struct devfreq *devfreq_get_devfreq_by_phandle(struct device *dev,  in devfreq_get_devfreq_by_phandle()
432 static inline int devfreq_update_stats(struct devfreq *df)  in devfreq_update_stats()