36eda571b7
Added BEHAVIOR_DT_DEFINE() and BEHAVIOR_DT_INST_DEFINE(), which work exactly like the DEVICE_*_DEFINE() macros, except they also register the device as a behavior by adding a pointer to it to a memory section. Added zmk_behavior_get_binding(), which works like device_get_binding() except that it only searches the devices that have been registered as behaviors. This ensures that behaviors cannot have name collisions with other devices defined by the SoC, which will be important when we remove the label property from behaviors so they are given their node names. As an added benefit, this is faster since it searches a smaller list. Some basic benchmark code I wrote indicates it takes 30-70% as long, depending on where the behavior is in the list and whether the name string is an exact pointer match. From now on, behaviors should use BEHAVIOR_*_DEFINe() instead of DEVICE_*_DEFINE(), and any code that looks up a behavior by name should use zmk_behavior_get_binding() instead of device_get_binding().
38 lines
978 B
C
38 lines
978 B
C
/*
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* Copyright (c) 2020 The ZMK Contributors
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*
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* SPDX-License-Identifier: MIT
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*/
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#pragma once
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#include <zephyr/device.h>
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#define ZMK_BEHAVIOR_OPAQUE 0
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#define ZMK_BEHAVIOR_TRANSPARENT 1
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struct zmk_behavior_binding {
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char *behavior_dev;
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uint32_t param1;
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uint32_t param2;
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};
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struct zmk_behavior_binding_event {
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int layer;
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uint32_t position;
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int64_t timestamp;
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};
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/**
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* @brief Get a const struct device* for a behavior from its @p name field.
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*
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* @param name Behavior name to search for.
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*
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* @retval Pointer to the device structure for the behavior with the given name.
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* @retval NULL if the behavior is not found or its initialization function failed.
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*
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* @note This is equivalent to device_get_binding(), except it only searches
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* behavior devices, so it is faster and there is no chance of it returning an
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* unrelated node which shares the same name as a behavior.
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*/
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const struct device *zmk_behavior_get_binding(const char *name);
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