Durgadoss R | 71350db | 2012-09-18 11:04:53 +0530 | [diff] [blame] | 1 | /* |
| 2 | * thermal_core.h |
| 3 | * |
| 4 | * Copyright (C) 2012 Intel Corp |
| 5 | * Author: Durgadoss R <durgadoss.r@intel.com> |
| 6 | * |
| 7 | * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ |
| 8 | * This program is free software; you can redistribute it and/or modify |
| 9 | * it under the terms of the GNU General Public License as published by |
| 10 | * the Free Software Foundation; version 2 of the License. |
| 11 | * |
| 12 | * This program is distributed in the hope that it will be useful, but |
| 13 | * WITHOUT ANY WARRANTY; without even the implied warranty of |
| 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 15 | * General Public License for more details. |
| 16 | * |
| 17 | * You should have received a copy of the GNU General Public License along |
| 18 | * with this program; if not, write to the Free Software Foundation, Inc., |
| 19 | * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. |
| 20 | * |
| 21 | * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ |
| 22 | */ |
| 23 | |
| 24 | #ifndef __THERMAL_CORE_H__ |
| 25 | #define __THERMAL_CORE_H__ |
| 26 | |
| 27 | #include <linux/device.h> |
| 28 | #include <linux/thermal.h> |
| 29 | |
| 30 | /* Initial state of a cooling device during binding */ |
| 31 | #define THERMAL_NO_TARGET -1UL |
| 32 | |
| 33 | /* |
| 34 | * This structure is used to describe the behavior of |
| 35 | * a certain cooling device on a certain trip point |
| 36 | * in a certain thermal zone |
| 37 | */ |
| 38 | struct thermal_instance { |
| 39 | int id; |
| 40 | char name[THERMAL_NAME_LENGTH]; |
| 41 | struct thermal_zone_device *tz; |
| 42 | struct thermal_cooling_device *cdev; |
| 43 | int trip; |
Zhang Rui | bb431ba | 2015-10-30 16:31:47 +0800 | [diff] [blame] | 44 | bool initialized; |
Durgadoss R | 71350db | 2012-09-18 11:04:53 +0530 | [diff] [blame] | 45 | unsigned long upper; /* Highest cooling state for this trip point */ |
| 46 | unsigned long lower; /* Lowest cooling state for this trip point */ |
| 47 | unsigned long target; /* expected cooling state */ |
| 48 | char attr_name[THERMAL_NAME_LENGTH]; |
| 49 | struct device_attribute attr; |
Javi Merino | db91651 | 2015-02-18 16:04:24 +0000 | [diff] [blame] | 50 | char weight_attr_name[THERMAL_NAME_LENGTH]; |
| 51 | struct device_attribute weight_attr; |
Durgadoss R | 71350db | 2012-09-18 11:04:53 +0530 | [diff] [blame] | 52 | struct list_head tz_node; /* node in tz->thermal_instances */ |
| 53 | struct list_head cdev_node; /* node in cdev->thermal_instances */ |
Kapileshwar Singh | 6cd9e9f | 2015-02-18 16:04:21 +0000 | [diff] [blame] | 54 | unsigned int weight; /* The weight of the cooling device */ |
Durgadoss R | 71350db | 2012-09-18 11:04:53 +0530 | [diff] [blame] | 55 | }; |
| 56 | |
Eduardo Valentin | ba78da4 | 2016-11-07 21:08:57 -0800 | [diff] [blame^] | 57 | #define to_thermal_zone(_dev) \ |
| 58 | container_of(_dev, struct thermal_zone_device, device) |
| 59 | |
Zhang Rui | 80a26a5 | 2013-03-26 16:38:29 +0800 | [diff] [blame] | 60 | int thermal_register_governor(struct thermal_governor *); |
| 61 | void thermal_unregister_governor(struct thermal_governor *); |
Eduardo Valentin | 3d0055d | 2016-11-07 21:08:54 -0800 | [diff] [blame] | 62 | void thermal_zone_device_rebind_exception(struct thermal_zone_device *, |
| 63 | const char *, size_t); |
| 64 | void thermal_zone_device_unbind_exception(struct thermal_zone_device *, |
| 65 | const char *, size_t); |
Eduardo Valentin | 6b88520 | 2016-11-07 21:08:55 -0800 | [diff] [blame] | 66 | int thermal_zone_device_set_policy(struct thermal_zone_device *, char *); |
Eduardo Valentin | 97d2423 | 2016-11-07 21:08:56 -0800 | [diff] [blame] | 67 | int thermal_build_list_of_policies(char *buf); |
Zhang Rui | 80a26a5 | 2013-03-26 16:38:29 +0800 | [diff] [blame] | 68 | |
| 69 | #ifdef CONFIG_THERMAL_GOV_STEP_WISE |
| 70 | int thermal_gov_step_wise_register(void); |
| 71 | void thermal_gov_step_wise_unregister(void); |
| 72 | #else |
| 73 | static inline int thermal_gov_step_wise_register(void) { return 0; } |
| 74 | static inline void thermal_gov_step_wise_unregister(void) {} |
| 75 | #endif /* CONFIG_THERMAL_GOV_STEP_WISE */ |
| 76 | |
| 77 | #ifdef CONFIG_THERMAL_GOV_FAIR_SHARE |
| 78 | int thermal_gov_fair_share_register(void); |
| 79 | void thermal_gov_fair_share_unregister(void); |
| 80 | #else |
| 81 | static inline int thermal_gov_fair_share_register(void) { return 0; } |
| 82 | static inline void thermal_gov_fair_share_unregister(void) {} |
| 83 | #endif /* CONFIG_THERMAL_GOV_FAIR_SHARE */ |
| 84 | |
Peter Feuerer | e4dbf98 | 2014-07-22 17:37:13 +0200 | [diff] [blame] | 85 | #ifdef CONFIG_THERMAL_GOV_BANG_BANG |
| 86 | int thermal_gov_bang_bang_register(void); |
| 87 | void thermal_gov_bang_bang_unregister(void); |
| 88 | #else |
| 89 | static inline int thermal_gov_bang_bang_register(void) { return 0; } |
| 90 | static inline void thermal_gov_bang_bang_unregister(void) {} |
| 91 | #endif /* CONFIG_THERMAL_GOV_BANG_BANG */ |
| 92 | |
Zhang Rui | 80a26a5 | 2013-03-26 16:38:29 +0800 | [diff] [blame] | 93 | #ifdef CONFIG_THERMAL_GOV_USER_SPACE |
| 94 | int thermal_gov_user_space_register(void); |
| 95 | void thermal_gov_user_space_unregister(void); |
| 96 | #else |
| 97 | static inline int thermal_gov_user_space_register(void) { return 0; } |
| 98 | static inline void thermal_gov_user_space_unregister(void) {} |
| 99 | #endif /* CONFIG_THERMAL_GOV_USER_SPACE */ |
| 100 | |
Javi Merino | 6b775e8 | 2015-03-02 17:17:19 +0000 | [diff] [blame] | 101 | #ifdef CONFIG_THERMAL_GOV_POWER_ALLOCATOR |
| 102 | int thermal_gov_power_allocator_register(void); |
| 103 | void thermal_gov_power_allocator_unregister(void); |
| 104 | #else |
| 105 | static inline int thermal_gov_power_allocator_register(void) { return 0; } |
| 106 | static inline void thermal_gov_power_allocator_unregister(void) {} |
| 107 | #endif /* CONFIG_THERMAL_GOV_POWER_ALLOCATOR */ |
| 108 | |
Eduardo Valentin | 4e5e470 | 2013-07-03 15:35:39 -0400 | [diff] [blame] | 109 | /* device tree support */ |
| 110 | #ifdef CONFIG_THERMAL_OF |
| 111 | int of_parse_thermal_zones(void); |
| 112 | void of_thermal_destroy_zones(void); |
Lukasz Majewski | 08dab66 | 2014-12-08 18:04:17 +0100 | [diff] [blame] | 113 | int of_thermal_get_ntrips(struct thermal_zone_device *); |
Lukasz Majewski | a9bf2cc | 2014-12-08 18:04:18 +0100 | [diff] [blame] | 114 | bool of_thermal_is_trip_valid(struct thermal_zone_device *, int); |
Geert Uytterhoeven | ebc3193 | 2015-01-03 22:56:56 +0100 | [diff] [blame] | 115 | const struct thermal_trip * |
Lukasz Majewski | ce8be77 | 2014-12-08 18:04:20 +0100 | [diff] [blame] | 116 | of_thermal_get_trip_points(struct thermal_zone_device *); |
Eduardo Valentin | 4e5e470 | 2013-07-03 15:35:39 -0400 | [diff] [blame] | 117 | #else |
| 118 | static inline int of_parse_thermal_zones(void) { return 0; } |
| 119 | static inline void of_thermal_destroy_zones(void) { } |
Lukasz Majewski | 08dab66 | 2014-12-08 18:04:17 +0100 | [diff] [blame] | 120 | static inline int of_thermal_get_ntrips(struct thermal_zone_device *tz) |
| 121 | { |
| 122 | return 0; |
| 123 | } |
Lukasz Majewski | a9bf2cc | 2014-12-08 18:04:18 +0100 | [diff] [blame] | 124 | static inline bool of_thermal_is_trip_valid(struct thermal_zone_device *tz, |
| 125 | int trip) |
| 126 | { |
Joe Perches | ce1d949 | 2015-03-30 10:43:22 -0700 | [diff] [blame] | 127 | return false; |
Lukasz Majewski | a9bf2cc | 2014-12-08 18:04:18 +0100 | [diff] [blame] | 128 | } |
Geert Uytterhoeven | ebc3193 | 2015-01-03 22:56:56 +0100 | [diff] [blame] | 129 | static inline const struct thermal_trip * |
Lukasz Majewski | ce8be77 | 2014-12-08 18:04:20 +0100 | [diff] [blame] | 130 | of_thermal_get_trip_points(struct thermal_zone_device *tz) |
| 131 | { |
| 132 | return NULL; |
| 133 | } |
Eduardo Valentin | 4e5e470 | 2013-07-03 15:35:39 -0400 | [diff] [blame] | 134 | #endif |
| 135 | |
Durgadoss R | 71350db | 2012-09-18 11:04:53 +0530 | [diff] [blame] | 136 | #endif /* __THERMAL_CORE_H__ */ |