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58 lines
1.4 KiB
58 lines
1.4 KiB
/* SPDX-License-Identifier: GPL-2.0-only */ |
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/* Copyright (c) 2021 Intel Corporation */ |
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#include <linux/mutex.h> |
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#include <linux/types.h> |
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#ifndef __PECI_HWMON_COMMON_H |
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#define __PECI_HWMON_COMMON_H |
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#define PECI_HWMON_UPDATE_INTERVAL HZ |
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/** |
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* struct peci_sensor_state - PECI state information |
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* @valid: flag to indicate the sensor value is valid |
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* @last_updated: time of the last update in jiffies |
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* @lock: mutex to protect sensor access |
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*/ |
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struct peci_sensor_state { |
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bool valid; |
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unsigned long last_updated; |
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struct mutex lock; /* protect sensor access */ |
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}; |
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/** |
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* struct peci_sensor_data - PECI sensor information |
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* @value: sensor value in milli units |
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* @state: sensor update state |
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*/ |
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struct peci_sensor_data { |
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s32 value; |
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struct peci_sensor_state state; |
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}; |
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/** |
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* peci_sensor_need_update() - check whether sensor update is needed or not |
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* @sensor: pointer to sensor data struct |
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* |
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* Return: true if update is needed, false if not. |
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*/ |
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static inline bool peci_sensor_need_update(struct peci_sensor_state *state) |
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{ |
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return !state->valid || |
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time_after(jiffies, state->last_updated + PECI_HWMON_UPDATE_INTERVAL); |
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} |
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/** |
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* peci_sensor_mark_updated() - mark the sensor is updated |
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* @sensor: pointer to sensor data struct |
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*/ |
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static inline void peci_sensor_mark_updated(struct peci_sensor_state *state) |
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{ |
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state->valid = true; |
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state->last_updated = jiffies; |
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} |
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#endif /* __PECI_HWMON_COMMON_H */
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