diff options
Diffstat (limited to 'include/linux/thermal.h')
| -rw-r--r-- | include/linux/thermal.h | 75 |
1 files changed, 64 insertions, 11 deletions
diff --git a/include/linux/thermal.h b/include/linux/thermal.h index fe82022478e..f7e11c7ea7d 100644 --- a/include/linux/thermal.h +++ b/include/linux/thermal.h @@ -25,6 +25,7 @@ #ifndef __THERMAL_H__ #define __THERMAL_H__ +#include <linux/of.h> #include <linux/idr.h> #include <linux/device.h> #include <linux/workqueue.h> @@ -33,8 +34,11 @@ #define THERMAL_MAX_TRIPS 12 #define THERMAL_NAME_LENGTH 20 +/* invalid cooling state */ +#define THERMAL_CSTATE_INVALID -1UL + /* No upper/lower limit requirement */ -#define THERMAL_NO_LIMIT -1UL +#define THERMAL_NO_LIMIT THERMAL_CSTATE_INVALID /* Unit conversion macros */ #define KELVIN_TO_CELSIUS(t) (long)(((long)t-2732 >= 0) ? \ @@ -44,7 +48,7 @@ /* 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" +#define THERMAL_GENL_MCAST_GROUP_NAME "thermal_mc_grp" /* Default Thermal Governor */ #if defined(CONFIG_THERMAL_DEFAULT_GOV_STEP_WISE) @@ -74,6 +78,8 @@ enum thermal_trend { THERMAL_TREND_STABLE, /* temperature is stable */ THERMAL_TREND_RAISING, /* temperature is raising */ THERMAL_TREND_DROPPING, /* temperature is dropping */ + THERMAL_TREND_RAISE_FULL, /* apply highest cooling action */ + THERMAL_TREND_DROP_FULL, /* apply lowest cooling action */ }; /* Events supported by Thermal Netlink */ @@ -121,6 +127,7 @@ struct thermal_zone_device_ops { int (*set_trip_hyst) (struct thermal_zone_device *, int, unsigned long); int (*get_crit_temp) (struct thermal_zone_device *, unsigned long *); + int (*set_emul_temp) (struct thermal_zone_device *, unsigned long); int (*get_trend) (struct thermal_zone_device *, int, enum thermal_trend *); int (*notify) (struct thermal_zone_device *, int, @@ -137,6 +144,7 @@ struct thermal_cooling_device { int id; char type[THERMAL_NAME_LENGTH]; struct device device; + struct device_node *np; void *devdata; const struct thermal_cooling_device_ops *ops; bool updated; /* true if the cooling device does not need update */ @@ -163,9 +171,10 @@ struct thermal_zone_device { int polling_delay; int temperature; int last_temperature; + int emul_temperature; int passive; unsigned int forced_passive; - const struct thermal_zone_device_ops *ops; + struct thermal_zone_device_ops *ops; const struct thermal_zone_params *tzp; struct thermal_governor *governor; struct list_head thermal_instances; @@ -180,7 +189,6 @@ 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; }; /* Structure that holds binding parameters for a zone */ @@ -201,6 +209,16 @@ struct thermal_bind_params { * See Documentation/thermal/sysfs-api.txt for more information. */ int trip_mask; + + /* + * This is an array of cooling state limits. Must have exactly + * 2 * thermal_zone.number_of_trip_points. It is an array consisting + * of tuples <lower-state upper-state> of state limits. Each trip + * will be associated with one state limit tuple when binding. + * A NULL pointer means <THERMAL_NO_LIMITS THERMAL_NO_LIMITS> + * on all trips. + */ + unsigned long *binding_limits; int (*match) (struct thermal_zone_device *tz, struct thermal_cooling_device *cdev); }; @@ -208,6 +226,14 @@ struct thermal_bind_params { /* Structure to define Thermal Zone parameters */ struct thermal_zone_params { char governor_name[THERMAL_NAME_LENGTH]; + + /* + * a boolean to indicate if the thermal to hwmon sysfs interface + * is required. when no_hwmon == false, a hwmon sysfs interface + * will be created. when no_hwmon == true, nothing will be done + */ + bool no_hwmon; + int num_tbps; /* Number of tbp entries */ struct thermal_bind_params *tbp; }; @@ -218,8 +244,31 @@ struct thermal_genl_event { }; /* Function declarations */ +#ifdef CONFIG_THERMAL_OF +struct thermal_zone_device * +thermal_zone_of_sensor_register(struct device *dev, int id, + void *data, int (*get_temp)(void *, long *), + int (*get_trend)(void *, long *)); +void thermal_zone_of_sensor_unregister(struct device *dev, + struct thermal_zone_device *tz); +#else +static inline struct thermal_zone_device * +thermal_zone_of_sensor_register(struct device *dev, int id, + void *data, int (*get_temp)(void *, long *), + int (*get_trend)(void *, long *)) +{ + return NULL; +} + +static inline +void thermal_zone_of_sensor_unregister(struct device *dev, + struct thermal_zone_device *tz) +{ +} + +#endif struct thermal_zone_device *thermal_zone_device_register(const char *, int, int, - void *, const struct thermal_zone_device_ops *, + void *, struct thermal_zone_device_ops *, const struct thermal_zone_params *, int, int); void thermal_zone_device_unregister(struct thermal_zone_device *); @@ -232,21 +281,25 @@ 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 *); +struct thermal_cooling_device * +thermal_of_cooling_device_register(struct device_node *np, char *, void *, + const struct thermal_cooling_device_ops *); void thermal_cooling_device_unregister(struct thermal_cooling_device *); +struct thermal_zone_device *thermal_zone_get_zone_by_name(const char *name); +int thermal_zone_get_temp(struct thermal_zone_device *tz, unsigned long *temp); 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 *); +void thermal_notify_framework(struct thermal_zone_device *, int); #ifdef CONFIG_NET -extern int thermal_generate_netlink_event(u32 orig, enum events event); +extern int thermal_generate_netlink_event(struct thermal_zone_device *tz, + enum events event); #else -static inline int thermal_generate_netlink_event(u32 orig, enum events event) +static inline int thermal_generate_netlink_event(struct thermal_zone_device *tz, + enum events event) { return 0; } |