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; |
Ram Chandrasekar | a66af145 | 2017-03-28 15:16:39 -0600 | [diff] [blame] | 52 | char upper_attr_name[THERMAL_NAME_LENGTH]; |
| 53 | struct device_attribute upper_attr; |
| 54 | char lower_attr_name[THERMAL_NAME_LENGTH]; |
| 55 | struct device_attribute lower_attr; |
Durgadoss R | 71350db | 2012-09-18 11:04:53 +0530 | [diff] [blame] | 56 | struct list_head tz_node; /* node in tz->thermal_instances */ |
| 57 | struct list_head cdev_node; /* node in cdev->thermal_instances */ |
Kapileshwar Singh | 6cd9e9f | 2015-02-18 16:04:21 +0000 | [diff] [blame] | 58 | unsigned int weight; /* The weight of the cooling device */ |
Durgadoss R | 71350db | 2012-09-18 11:04:53 +0530 | [diff] [blame] | 59 | }; |
| 60 | |
Zhang Rui | 80a26a5 | 2013-03-26 16:38:29 +0800 | [diff] [blame] | 61 | int thermal_register_governor(struct thermal_governor *); |
| 62 | void thermal_unregister_governor(struct thermal_governor *); |
Ram Chandrasekar | cf54360 | 2017-03-13 22:59:01 -0600 | [diff] [blame] | 63 | void handle_thermal_trip(struct thermal_zone_device *tz, int trip); |
Zhang Rui | 80a26a5 | 2013-03-26 16:38:29 +0800 | [diff] [blame] | 64 | |
| 65 | #ifdef CONFIG_THERMAL_GOV_STEP_WISE |
| 66 | int thermal_gov_step_wise_register(void); |
| 67 | void thermal_gov_step_wise_unregister(void); |
| 68 | #else |
| 69 | static inline int thermal_gov_step_wise_register(void) { return 0; } |
| 70 | static inline void thermal_gov_step_wise_unregister(void) {} |
| 71 | #endif /* CONFIG_THERMAL_GOV_STEP_WISE */ |
| 72 | |
| 73 | #ifdef CONFIG_THERMAL_GOV_FAIR_SHARE |
| 74 | int thermal_gov_fair_share_register(void); |
| 75 | void thermal_gov_fair_share_unregister(void); |
| 76 | #else |
| 77 | static inline int thermal_gov_fair_share_register(void) { return 0; } |
| 78 | static inline void thermal_gov_fair_share_unregister(void) {} |
| 79 | #endif /* CONFIG_THERMAL_GOV_FAIR_SHARE */ |
| 80 | |
Peter Feuerer | e4dbf98 | 2014-07-22 17:37:13 +0200 | [diff] [blame] | 81 | #ifdef CONFIG_THERMAL_GOV_BANG_BANG |
| 82 | int thermal_gov_bang_bang_register(void); |
| 83 | void thermal_gov_bang_bang_unregister(void); |
| 84 | #else |
| 85 | static inline int thermal_gov_bang_bang_register(void) { return 0; } |
| 86 | static inline void thermal_gov_bang_bang_unregister(void) {} |
| 87 | #endif /* CONFIG_THERMAL_GOV_BANG_BANG */ |
| 88 | |
Zhang Rui | 80a26a5 | 2013-03-26 16:38:29 +0800 | [diff] [blame] | 89 | #ifdef CONFIG_THERMAL_GOV_USER_SPACE |
| 90 | int thermal_gov_user_space_register(void); |
| 91 | void thermal_gov_user_space_unregister(void); |
| 92 | #else |
| 93 | static inline int thermal_gov_user_space_register(void) { return 0; } |
| 94 | static inline void thermal_gov_user_space_unregister(void) {} |
| 95 | #endif /* CONFIG_THERMAL_GOV_USER_SPACE */ |
| 96 | |
Javi Merino | 6b775e8 | 2015-03-02 17:17:19 +0000 | [diff] [blame] | 97 | #ifdef CONFIG_THERMAL_GOV_POWER_ALLOCATOR |
| 98 | int thermal_gov_power_allocator_register(void); |
| 99 | void thermal_gov_power_allocator_unregister(void); |
| 100 | #else |
| 101 | static inline int thermal_gov_power_allocator_register(void) { return 0; } |
| 102 | static inline void thermal_gov_power_allocator_unregister(void) {} |
| 103 | #endif /* CONFIG_THERMAL_GOV_POWER_ALLOCATOR */ |
| 104 | |
Ram Chandrasekar | 6d44a34 | 2016-07-07 11:09:52 -0600 | [diff] [blame] | 105 | #ifdef CONFIG_THERMAL_GOV_LOW_LIMITS |
| 106 | int thermal_gov_low_limits_register(void); |
| 107 | void thermal_gov_low_limits_unregister(void); |
| 108 | #else |
| 109 | static inline int thermal_gov_low_limits_register(void) { return 0; } |
| 110 | static inline void thermal_gov_low_limits_unregister(void) {} |
| 111 | #endif /* CONFIG_THERMAL_GOV_LOW_LIMITS */ |
| 112 | |
Eduardo Valentin | 4e5e470 | 2013-07-03 15:35:39 -0400 | [diff] [blame] | 113 | /* device tree support */ |
| 114 | #ifdef CONFIG_THERMAL_OF |
| 115 | int of_parse_thermal_zones(void); |
| 116 | void of_thermal_destroy_zones(void); |
Lukasz Majewski | 08dab66 | 2014-12-08 18:04:17 +0100 | [diff] [blame] | 117 | int of_thermal_get_ntrips(struct thermal_zone_device *); |
Lukasz Majewski | a9bf2cc | 2014-12-08 18:04:18 +0100 | [diff] [blame] | 118 | bool of_thermal_is_trip_valid(struct thermal_zone_device *, int); |
Geert Uytterhoeven | ebc3193 | 2015-01-03 22:56:56 +0100 | [diff] [blame] | 119 | const struct thermal_trip * |
Lukasz Majewski | ce8be77 | 2014-12-08 18:04:20 +0100 | [diff] [blame] | 120 | of_thermal_get_trip_points(struct thermal_zone_device *); |
Lina Iyer | 01ffea2 | 2016-07-27 13:46:32 -0600 | [diff] [blame] | 121 | int of_thermal_aggregate_trip(struct thermal_zone_device *tz, |
| 122 | enum thermal_trip_type type, |
| 123 | int *low, int *high); |
Ram Chandrasekar | cf54360 | 2017-03-13 22:59:01 -0600 | [diff] [blame] | 124 | void of_thermal_handle_trip(struct thermal_zone_device *tz); |
Eduardo Valentin | 4e5e470 | 2013-07-03 15:35:39 -0400 | [diff] [blame] | 125 | #else |
| 126 | static inline int of_parse_thermal_zones(void) { return 0; } |
| 127 | static inline void of_thermal_destroy_zones(void) { } |
Lukasz Majewski | 08dab66 | 2014-12-08 18:04:17 +0100 | [diff] [blame] | 128 | static inline int of_thermal_get_ntrips(struct thermal_zone_device *tz) |
| 129 | { |
| 130 | return 0; |
| 131 | } |
Lukasz Majewski | a9bf2cc | 2014-12-08 18:04:18 +0100 | [diff] [blame] | 132 | static inline bool of_thermal_is_trip_valid(struct thermal_zone_device *tz, |
| 133 | int trip) |
| 134 | { |
Joe Perches | ce1d949 | 2015-03-30 10:43:22 -0700 | [diff] [blame] | 135 | return false; |
Lukasz Majewski | a9bf2cc | 2014-12-08 18:04:18 +0100 | [diff] [blame] | 136 | } |
Geert Uytterhoeven | ebc3193 | 2015-01-03 22:56:56 +0100 | [diff] [blame] | 137 | static inline const struct thermal_trip * |
Lukasz Majewski | ce8be77 | 2014-12-08 18:04:20 +0100 | [diff] [blame] | 138 | of_thermal_get_trip_points(struct thermal_zone_device *tz) |
| 139 | { |
| 140 | return NULL; |
| 141 | } |
Lina Iyer | 01ffea2 | 2016-07-27 13:46:32 -0600 | [diff] [blame] | 142 | static inline int of_thermal_aggregate_trip(struct thermal_zone_device *tz, |
| 143 | enum thermal_trip_type type, |
| 144 | int *low, int *high) |
| 145 | { |
| 146 | return -ENODEV; |
| 147 | } |
Ram Chandrasekar | cf54360 | 2017-03-13 22:59:01 -0600 | [diff] [blame] | 148 | static inline |
| 149 | void of_thermal_handle_trip(struct thermal_zone_device *tz) |
| 150 | { } |
Eduardo Valentin | 4e5e470 | 2013-07-03 15:35:39 -0400 | [diff] [blame] | 151 | #endif |
| 152 | |
Durgadoss R | 71350db | 2012-09-18 11:04:53 +0530 | [diff] [blame] | 153 | #endif /* __THERMAL_CORE_H__ */ |