diff options
Diffstat (limited to 'include/linux/thermal.h')
| -rw-r--r-- | include/linux/thermal.h | 134 |
1 files changed, 100 insertions, 34 deletions
diff --git a/include/linux/thermal.h b/include/linux/thermal.h index 91b34812cd8..fe82022478e 100644 --- a/include/linux/thermal.h +++ b/include/linux/thermal.h @@ -29,6 +29,32 @@ #include <linux/device.h> #include <linux/workqueue.h> +#define THERMAL_TRIPS_NONE -1 +#define THERMAL_MAX_TRIPS 12 +#define THERMAL_NAME_LENGTH 20 + +/* No upper/lower limit requirement */ +#define THERMAL_NO_LIMIT -1UL + +/* Unit conversion macros */ +#define KELVIN_TO_CELSIUS(t) (long)(((long)t-2732 >= 0) ? \ + ((long)t-2732+5)/10 : ((long)t-2732-5)/10) +#define CELSIUS_TO_KELVIN(t) ((t)*10+2732) + +/* Adding event notification support elements */ +#define THERMAL_GENL_FAMILY_NAME "thermal_event" +#define THERMAL_GENL_VERSION 0x01 +#define THERMAL_GENL_MCAST_GROUP_NAME "thermal_mc_group" + +/* Default Thermal Governor */ +#if defined(CONFIG_THERMAL_DEFAULT_GOV_STEP_WISE) +#define DEFAULT_THERMAL_GOVERNOR "step_wise" +#elif defined(CONFIG_THERMAL_DEFAULT_GOV_FAIR_SHARE) +#define DEFAULT_THERMAL_GOVERNOR "fair_share" +#elif defined(CONFIG_THERMAL_DEFAULT_GOV_USER_SPACE) +#define DEFAULT_THERMAL_GOVERNOR "user_space" +#endif + struct thermal_zone_device; struct thermal_cooling_device; @@ -50,6 +76,30 @@ enum thermal_trend { THERMAL_TREND_DROPPING, /* temperature is dropping */ }; +/* Events supported by Thermal Netlink */ +enum events { + THERMAL_AUX0, + THERMAL_AUX1, + THERMAL_CRITICAL, + THERMAL_DEV_FAULT, +}; + +/* attributes of thermal_genl_family */ +enum { + THERMAL_GENL_ATTR_UNSPEC, + THERMAL_GENL_ATTR_EVENT, + __THERMAL_GENL_ATTR_MAX, +}; +#define THERMAL_GENL_ATTR_MAX (__THERMAL_GENL_ATTR_MAX - 1) + +/* commands supported by the thermal_genl_family */ +enum { + THERMAL_GENL_CMD_UNSPEC, + THERMAL_GENL_CMD_EVENT, + __THERMAL_GENL_CMD_MAX, +}; +#define THERMAL_GENL_CMD_MAX (__THERMAL_GENL_CMD_MAX - 1) + struct thermal_zone_device_ops { int (*bind) (struct thermal_zone_device *, struct thermal_cooling_device *); @@ -83,11 +133,6 @@ struct thermal_cooling_device_ops { int (*set_cur_state) (struct thermal_cooling_device *, unsigned long); }; -#define THERMAL_NO_LIMIT -1UL /* no upper/lower limit requirement */ - -#define THERMAL_TRIPS_NONE -1 -#define THERMAL_MAX_TRIPS 12 -#define THERMAL_NAME_LENGTH 20 struct thermal_cooling_device { int id; char type[THERMAL_NAME_LENGTH]; @@ -100,10 +145,6 @@ struct thermal_cooling_device { struct list_head node; }; -#define KELVIN_TO_CELSIUS(t) (long)(((long)t-2732 >= 0) ? \ - ((long)t-2732+5)/10 : ((long)t-2732-5)/10) -#define CELSIUS_TO_KELVIN(t) ((t)*10+2732) - struct thermal_attr { struct device_attribute attr; char name[THERMAL_NAME_LENGTH]; @@ -125,46 +166,61 @@ struct thermal_zone_device { int passive; unsigned int forced_passive; const struct thermal_zone_device_ops *ops; + const struct thermal_zone_params *tzp; + struct thermal_governor *governor; struct list_head thermal_instances; struct idr idr; struct mutex lock; /* protect thermal_instances list */ struct list_head node; struct delayed_work poll_queue; }; -/* Adding event notification support elements */ -#define THERMAL_GENL_FAMILY_NAME "thermal_event" -#define THERMAL_GENL_VERSION 0x01 -#define THERMAL_GENL_MCAST_GROUP_NAME "thermal_mc_group" -enum events { - THERMAL_AUX0, - THERMAL_AUX1, - THERMAL_CRITICAL, - THERMAL_DEV_FAULT, +/* Structure that holds thermal governor information */ +struct thermal_governor { + char name[THERMAL_NAME_LENGTH]; + int (*throttle)(struct thermal_zone_device *tz, int trip); + struct list_head governor_list; + struct module *owner; }; -struct thermal_genl_event { - u32 orig; - enum events event; +/* Structure that holds binding parameters for a zone */ +struct thermal_bind_params { + struct thermal_cooling_device *cdev; + + /* + * This is a measure of 'how effectively these devices can + * cool 'this' thermal zone. The shall be determined by platform + * characterization. This is on a 'percentage' scale. + * See Documentation/thermal/sysfs-api.txt for more information. + */ + int weight; + + /* + * This is a bit mask that gives the binding relation between this + * thermal zone and cdev, for a particular trip point. + * See Documentation/thermal/sysfs-api.txt for more information. + */ + int trip_mask; + int (*match) (struct thermal_zone_device *tz, + struct thermal_cooling_device *cdev); }; -/* attributes of thermal_genl_family */ -enum { - THERMAL_GENL_ATTR_UNSPEC, - THERMAL_GENL_ATTR_EVENT, - __THERMAL_GENL_ATTR_MAX, + +/* Structure to define Thermal Zone parameters */ +struct thermal_zone_params { + char governor_name[THERMAL_NAME_LENGTH]; + int num_tbps; /* Number of tbp entries */ + struct thermal_bind_params *tbp; }; -#define THERMAL_GENL_ATTR_MAX (__THERMAL_GENL_ATTR_MAX - 1) -/* commands supported by the thermal_genl_family */ -enum { - THERMAL_GENL_CMD_UNSPEC, - THERMAL_GENL_CMD_EVENT, - __THERMAL_GENL_CMD_MAX, +struct thermal_genl_event { + u32 orig; + enum events event; }; -#define THERMAL_GENL_CMD_MAX (__THERMAL_GENL_CMD_MAX - 1) +/* Function declarations */ struct thermal_zone_device *thermal_zone_device_register(const char *, int, int, - void *, const struct thermal_zone_device_ops *, int, int); + void *, const struct thermal_zone_device_ops *, + const struct thermal_zone_params *, int, int); void thermal_zone_device_unregister(struct thermal_zone_device *); int thermal_zone_bind_cooling_device(struct thermal_zone_device *, int, @@ -173,10 +229,20 @@ int thermal_zone_bind_cooling_device(struct thermal_zone_device *, int, int thermal_zone_unbind_cooling_device(struct thermal_zone_device *, int, struct thermal_cooling_device *); void thermal_zone_device_update(struct thermal_zone_device *); + struct thermal_cooling_device *thermal_cooling_device_register(char *, void *, const struct thermal_cooling_device_ops *); void thermal_cooling_device_unregister(struct thermal_cooling_device *); +int get_tz_trend(struct thermal_zone_device *, int); +struct thermal_instance *get_thermal_instance(struct thermal_zone_device *, + struct thermal_cooling_device *, int); +void thermal_cdev_update(struct thermal_cooling_device *); +void notify_thermal_framework(struct thermal_zone_device *, int); + +int thermal_register_governor(struct thermal_governor *); +void thermal_unregister_governor(struct thermal_governor *); + #ifdef CONFIG_NET extern int thermal_generate_netlink_event(u32 orig, enum events event); #else |