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().
80 lines
2.6 KiB
C
80 lines
2.6 KiB
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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#define DT_DRV_COMPAT zmk_behavior_ext_power
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#include <zephyr/device.h>
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#include <zephyr/devicetree.h>
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#include <drivers/behavior.h>
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#include <drivers/ext_power.h>
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#include <dt-bindings/zmk/ext_power.h>
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#include <zephyr/logging/log.h>
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LOG_MODULE_DECLARE(zmk, CONFIG_ZMK_LOG_LEVEL);
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#if DT_HAS_COMPAT_STATUS_OKAY(DT_DRV_COMPAT)
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static int
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on_keymap_binding_convert_central_state_dependent_params(struct zmk_behavior_binding *binding,
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struct zmk_behavior_binding_event event) {
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const struct device *ext_power = device_get_binding("EXT_POWER");
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if (ext_power == NULL) {
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LOG_ERR("Unable to retrieve ext_power device: %d", binding->param1);
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return -EIO;
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}
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if (binding->param1 == EXT_POWER_TOGGLE_CMD) {
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binding->param1 = ext_power_get(ext_power) > 0 ? EXT_POWER_OFF_CMD : EXT_POWER_ON_CMD;
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}
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return 0;
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}
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static int on_keymap_binding_pressed(struct zmk_behavior_binding *binding,
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struct zmk_behavior_binding_event event) {
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const struct device *ext_power = device_get_binding("EXT_POWER");
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if (ext_power == NULL) {
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LOG_ERR("Unable to retrieve ext_power device: %d", binding->param1);
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return -EIO;
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}
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switch (binding->param1) {
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case EXT_POWER_OFF_CMD:
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return ext_power_disable(ext_power);
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case EXT_POWER_ON_CMD:
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return ext_power_enable(ext_power);
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case EXT_POWER_TOGGLE_CMD:
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if (ext_power_get(ext_power) > 0)
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return ext_power_disable(ext_power);
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else
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return ext_power_enable(ext_power);
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default:
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LOG_ERR("Unknown ext_power command: %d", binding->param1);
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}
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return -ENOTSUP;
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}
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static int on_keymap_binding_released(struct zmk_behavior_binding *binding,
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struct zmk_behavior_binding_event event) {
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return ZMK_BEHAVIOR_OPAQUE;
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}
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static int behavior_ext_power_init(const struct device *dev) { return 0; };
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static const struct behavior_driver_api behavior_ext_power_driver_api = {
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.binding_convert_central_state_dependent_params =
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on_keymap_binding_convert_central_state_dependent_params,
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.binding_pressed = on_keymap_binding_pressed,
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.binding_released = on_keymap_binding_released,
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.locality = BEHAVIOR_LOCALITY_GLOBAL,
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};
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BEHAVIOR_DT_INST_DEFINE(0, behavior_ext_power_init, NULL, NULL, NULL, APPLICATION,
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CONFIG_APPLICATION_INIT_PRIORITY, &behavior_ext_power_driver_api);
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#endif /* DT_HAS_COMPAT_STATUS_OKAY(DT_DRV_COMPAT) */
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