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Diffstat (limited to 'drivers/thermal/thermal_core.h')
| -rw-r--r-- | drivers/thermal/thermal_core.h | 115 |
1 files changed, 115 insertions, 0 deletions
diff --git a/drivers/thermal/thermal_core.h b/drivers/thermal/thermal_core.h new file mode 100644 index 000000000..8e391812e --- /dev/null +++ b/drivers/thermal/thermal_core.h @@ -0,0 +1,115 @@ +/* + * thermal_core.h + * + * Copyright (C) 2012 Intel Corp + * Author: Durgadoss R <durgadoss.r@intel.com> + * + * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. + * + * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ + */ + +#ifndef __THERMAL_CORE_H__ +#define __THERMAL_CORE_H__ + +#include <linux/device.h> +#include <linux/thermal.h> + +/* Initial state of a cooling device during binding */ +#define THERMAL_NO_TARGET -1UL + +/* + * This structure is used to describe the behavior of + * a certain cooling device on a certain trip point + * in a certain thermal zone + */ +struct thermal_instance { + int id; + char name[THERMAL_NAME_LENGTH]; + struct thermal_zone_device *tz; + struct thermal_cooling_device *cdev; + int trip; + unsigned long upper; /* Highest cooling state for this trip point */ + unsigned long lower; /* Lowest cooling state for this trip point */ + unsigned long target; /* expected cooling state */ + char attr_name[THERMAL_NAME_LENGTH]; + struct device_attribute attr; + struct list_head tz_node; /* node in tz->thermal_instances */ + struct list_head cdev_node; /* node in cdev->thermal_instances */ +}; + +int thermal_register_governor(struct thermal_governor *); +void thermal_unregister_governor(struct thermal_governor *); + +#ifdef CONFIG_THERMAL_GOV_STEP_WISE +int thermal_gov_step_wise_register(void); +void thermal_gov_step_wise_unregister(void); +#else +static inline int thermal_gov_step_wise_register(void) { return 0; } +static inline void thermal_gov_step_wise_unregister(void) {} +#endif /* CONFIG_THERMAL_GOV_STEP_WISE */ + +#ifdef CONFIG_THERMAL_GOV_FAIR_SHARE +int thermal_gov_fair_share_register(void); +void thermal_gov_fair_share_unregister(void); +#else +static inline int thermal_gov_fair_share_register(void) { return 0; } +static inline void thermal_gov_fair_share_unregister(void) {} +#endif /* CONFIG_THERMAL_GOV_FAIR_SHARE */ + +#ifdef CONFIG_THERMAL_GOV_BANG_BANG +int thermal_gov_bang_bang_register(void); +void thermal_gov_bang_bang_unregister(void); +#else +static inline int thermal_gov_bang_bang_register(void) { return 0; } +static inline void thermal_gov_bang_bang_unregister(void) {} +#endif /* CONFIG_THERMAL_GOV_BANG_BANG */ + +#ifdef CONFIG_THERMAL_GOV_USER_SPACE +int thermal_gov_user_space_register(void); +void thermal_gov_user_space_unregister(void); +#else +static inline int thermal_gov_user_space_register(void) { return 0; } +static inline void thermal_gov_user_space_unregister(void) {} +#endif /* CONFIG_THERMAL_GOV_USER_SPACE */ + +/* device tree support */ +#ifdef CONFIG_THERMAL_OF +int of_parse_thermal_zones(void); +void of_thermal_destroy_zones(void); +int of_thermal_get_ntrips(struct thermal_zone_device *); +bool of_thermal_is_trip_valid(struct thermal_zone_device *, int); +const struct thermal_trip * +of_thermal_get_trip_points(struct thermal_zone_device *); +#else +static inline int of_parse_thermal_zones(void) { return 0; } +static inline void of_thermal_destroy_zones(void) { } +static inline int of_thermal_get_ntrips(struct thermal_zone_device *tz) +{ + return 0; +} +static inline bool of_thermal_is_trip_valid(struct thermal_zone_device *tz, + int trip) +{ + return false; +} +static inline const struct thermal_trip * +of_thermal_get_trip_points(struct thermal_zone_device *tz) +{ + return NULL; +} +#endif + +#endif /* __THERMAL_CORE_H__ */ |