diff options
author | Chanwoo Choi <cw00.choi@samsung.com> | 2017-04-06 07:19:35 +0300 |
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committer | MyungJoo Ham <myungjoo.ham@samsung.com> | 2017-04-12 06:42:14 +0300 |
commit | 3ea6b7001ef5da9f9816ee3c4fe731f4fe08b865 (patch) | |
tree | 40b519f4a28a95c9728e581d258292bfa55ac20c /drivers/devfreq | |
parent | 39da7c509acff13fc8cb12ec1bb20337c988ed36 (diff) | |
download | linux-3ea6b7001ef5da9f9816ee3c4fe731f4fe08b865.tar.xz |
PM / devfreq: Move struct devfreq_governor to devfreq directory
This patch moves the struct devfreq_governor from header file
to the devfreq directory because this structure is private data
and it have to be only accessed by the devfreq core.
Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
Signed-off-by: MyungJoo Ham <myungjoo.ham@samsung.com>
Diffstat (limited to 'drivers/devfreq')
-rw-r--r-- | drivers/devfreq/governor.h | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/drivers/devfreq/governor.h b/drivers/devfreq/governor.h index 71576b8bdfef..a4f2fa1091e4 100644 --- a/drivers/devfreq/governor.h +++ b/drivers/devfreq/governor.h @@ -25,6 +25,35 @@ #define DEVFREQ_GOV_SUSPEND 0x4 #define DEVFREQ_GOV_RESUME 0x5 +/** + * struct devfreq_governor - Devfreq policy governor + * @node: list node - contains registered devfreq governors + * @name: Governor's name + * @immutable: Immutable flag for governor. If the value is 1, + * this govenror is never changeable to other governor. + * @get_target_freq: Returns desired operating frequency for the device. + * Basically, get_target_freq will run + * devfreq_dev_profile.get_dev_status() to get the + * status of the device (load = busy_time / total_time). + * If no_central_polling is set, this callback is called + * only with update_devfreq() notified by OPP. + * @event_handler: Callback for devfreq core framework to notify events + * to governors. Events include per device governor + * init and exit, opp changes out of devfreq, suspend + * and resume of per device devfreq during device idle. + * + * Note that the callbacks are called with devfreq->lock locked by devfreq. + */ +struct devfreq_governor { + struct list_head node; + + const char name[DEVFREQ_NAME_LEN]; + const unsigned int immutable; + int (*get_target_freq)(struct devfreq *this, unsigned long *freq); + int (*event_handler)(struct devfreq *devfreq, + unsigned int event, void *data); +}; + /* Caution: devfreq->lock must be locked before calling update_devfreq */ extern int update_devfreq(struct devfreq *devfreq); |