diff options
Diffstat (limited to 'include/linux/devfreq.h')
| -rw-r--r-- | include/linux/devfreq.h | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/include/linux/devfreq.h b/include/linux/devfreq.h index b3be3d3cbaa7..afb94583960c 100644 --- a/include/linux/devfreq.h +++ b/include/linux/devfreq.h @@ -166,6 +166,36 @@ extern int devfreq_register_opp_notifier(struct device *dev, extern int devfreq_unregister_opp_notifier(struct device *dev, struct devfreq *devfreq); +#ifdef CONFIG_DEVFREQ_GOV_POWERSAVE +extern const struct devfreq_governor devfreq_powersave; +#endif +#ifdef CONFIG_DEVFREQ_GOV_PERFORMANCE +extern const struct devfreq_governor devfreq_performance; +#endif +#ifdef CONFIG_DEVFREQ_GOV_USERSPACE +extern const struct devfreq_governor devfreq_userspace; +#endif +#ifdef CONFIG_DEVFREQ_GOV_SIMPLE_ONDEMAND +extern const struct devfreq_governor devfreq_simple_ondemand; +/** + * struct devfreq_simple_ondemand_data - void *data fed to struct devfreq + * and devfreq_add_device + * @ upthreshold If the load is over this value, the frequency jumps. + * Specify 0 to use the default. Valid value = 0 to 100. + * @ downdifferential If the load is under upthreshold - downdifferential, + * the governor may consider slowing the frequency down. + * Specify 0 to use the default. Valid value = 0 to 100. + * downdifferential < upthreshold must hold. + * + * If the fed devfreq_simple_ondemand_data pointer is NULL to the governor, + * the governor uses the default values. + */ +struct devfreq_simple_ondemand_data { + unsigned int upthreshold; + unsigned int downdifferential; +}; +#endif + #else /* !CONFIG_PM_DEVFREQ */ static struct devfreq *devfreq_add_device(struct device *dev, struct devfreq_dev_profile *profile, @@ -198,6 +228,11 @@ static int devfreq_unregister_opp_notifier(struct device *dev, return -EINVAL; } +#define devfreq_powersave NULL +#define devfreq_performance NULL +#define devfreq_userspace NULL +#define devfreq_simple_ondemand NULL + #endif /* CONFIG_PM_DEVFREQ */ #endif /* __LINUX_DEVFREQ_H__ */ |