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/*
* Copyright (c) 2020 The ZMK Contributors
*
* SPDX-License-Identifier: MIT
*/
#include <sys/util.h>
#include <logging/log.h>
LOG_MODULE_DECLARE(zmk, CONFIG_ZMK_LOG_LEVEL);
#include <zmk/matrix.h>
#include <zmk/sensors.h>
#include <zmk/keymap.h>
#include <drivers/behavior.h>
#include <zmk/behavior.h>
#include <zmk/event-manager.h>
#include <zmk/events/position-state-changed.h>
#include <zmk/events/layer-state-changed.h>
#include <zmk/events/sensor-event.h>
static zmk_keymap_layers_state _zmk_keymap_layer_state = 0;
static uint8_t _zmk_keymap_layer_default = 0;
#define DT_DRV_COMPAT zmk_keymap
#define LAYER_CHILD_LEN(node) 1 +
#define ZMK_KEYMAP_NODE DT_DRV_INST(0)
#define ZMK_KEYMAP_LAYERS_LEN (DT_INST_FOREACH_CHILD(0, LAYER_CHILD_LEN) 0)
#define LAYER_NODE(l) DT_PHANDLE_BY_IDX(ZMK_KEYMAP_NODE, layers, l)
#define _TRANSFORM_ENTRY(idx, layer) \
{ \
.behavior_dev = DT_LABEL(DT_PHANDLE_BY_IDX(layer, bindings, idx)), \
.param1 = COND_CODE_0(DT_PHA_HAS_CELL_AT_IDX(layer, bindings, idx, param1), (0), \
(DT_PHA_BY_IDX(layer, bindings, idx, param1))), \
.param2 = COND_CODE_0(DT_PHA_HAS_CELL_AT_IDX(layer, bindings, idx, param2), (0), \
(DT_PHA_BY_IDX(layer, bindings, idx, param2))), \
},
#define TRANSFORMED_LAYER(node) {UTIL_LISTIFY(DT_PROP_LEN(node, bindings), _TRANSFORM_ENTRY, node)},
#if ZMK_KEYMAP_HAS_SENSORS
#define _TRANSFORM_SENSOR_ENTRY(idx, layer) \
{ \
.behavior_dev = DT_LABEL(DT_PHANDLE_BY_IDX(layer, sensor_bindings, idx)), \
.param1 = COND_CODE_0(DT_PHA_HAS_CELL_AT_IDX(layer, sensor_bindings, idx, param1), (0), \
(DT_PHA_BY_IDX(layer, sensor_bindings, idx, param1))), \
.param2 = COND_CODE_0(DT_PHA_HAS_CELL_AT_IDX(layer, sensor_bindings, idx, param2), (0), \
(DT_PHA_BY_IDX(layer, sensor_bindings, idx, param2))), \
},
#define SENSOR_LAYER(node) \
COND_CODE_1( \
DT_NODE_HAS_PROP(node, sensor_bindings), \
({UTIL_LISTIFY(DT_PROP_LEN(node, sensor_bindings), _TRANSFORM_SENSOR_ENTRY, node)}), \
({})),
#endif /* ZMK_KEYMAP_HAS_SENSORS */
// State
// When a behavior handles a key position "down" event, we record the layer state
// here so that even if that layer is deactivated before the "up", event, we
// still send the release event to the behavior in that layer also.
static uint32_t zmk_keymap_active_behavior_layer[ZMK_KEYMAP_LEN];
static struct zmk_behavior_binding zmk_keymap[ZMK_KEYMAP_LAYERS_LEN][ZMK_KEYMAP_LEN] = {
DT_INST_FOREACH_CHILD(0, TRANSFORMED_LAYER)};
#if ZMK_KEYMAP_HAS_SENSORS
static struct zmk_behavior_binding zmk_sensor_keymap[ZMK_KEYMAP_LAYERS_LEN]
[ZMK_KEYMAP_SENSORS_LEN] = {
DT_INST_FOREACH_CHILD(0, SENSOR_LAYER)};
#endif /* ZMK_KEYMAP_HAS_SENSORS */
static inline int set_layer_state(uint8_t layer, bool state) {
if (layer >= 32) {
return -EINVAL;
}
WRITE_BIT(_zmk_keymap_layer_state, layer, state);
ZMK_EVENT_RAISE(create_layer_state_changed(layer, state));
return 0;
}
uint8_t zmk_keymap_layer_default() { return _zmk_keymap_layer_default; }
zmk_keymap_layers_state zmk_keymap_layer_state() { return _zmk_keymap_layer_state; }
bool zmk_keymap_layer_active(uint8_t layer) {
return (_zmk_keymap_layer_state & (BIT(layer))) == (BIT(layer));
};
uint8_t zmk_keymap_highest_layer_active() {
for (uint8_t layer = 31; layer > 0; layer--) {
if (zmk_keymap_layer_active(layer)) {
return layer;
}
}
return zmk_keymap_layer_default();
}
int zmk_keymap_layer_activate(uint8_t layer) { return set_layer_state(layer, true); };
int zmk_keymap_layer_deactivate(uint8_t layer) { return set_layer_state(layer, false); };
int zmk_keymap_layer_toggle(uint8_t layer) {
if (zmk_keymap_layer_active(layer)) {
return zmk_keymap_layer_deactivate(layer);
}
return zmk_keymap_layer_activate(layer);
};
bool is_active_layer(uint8_t layer, zmk_keymap_layers_state layer_state) {
return (layer_state & BIT(layer)) == BIT(layer) || layer == _zmk_keymap_layer_default;
}
int zmk_keymap_apply_position_state(int layer, uint32_t position, bool pressed, int64_t timestamp) {
struct zmk_behavior_binding *binding = &zmk_keymap[layer][position];
const struct device *behavior;
struct zmk_behavior_binding_event event = {
.layer = layer,
.position = position,
.timestamp = timestamp,
};
LOG_DBG("layer: %d position: %d, binding name: %s", layer, position,
log_strdup(binding->behavior_dev));
behavior = device_get_binding(binding->behavior_dev);
if (!behavior) {
LOG_DBG("No behavior assigned to %d on layer %d", position, layer);
return 1;
}
if (pressed) {
return behavior_keymap_binding_pressed(binding, event);
} else {
return behavior_keymap_binding_released(binding, event);
}
}
int zmk_keymap_position_state_changed(uint32_t position, bool pressed, int64_t timestamp) {
if (pressed) {
zmk_keymap_active_behavior_layer[position] = _zmk_keymap_layer_state;
}
for (int layer = ZMK_KEYMAP_LAYERS_LEN - 1; layer >= _zmk_keymap_layer_default; layer--) {
if (is_active_layer(layer, zmk_keymap_active_behavior_layer[position])) {
int ret = zmk_keymap_apply_position_state(layer, position, pressed, timestamp);
if (ret > 0) {
LOG_DBG("behavior processing to continue to next layer");
continue;
} else if (ret < 0) {
LOG_DBG("Behavior returned error: %d", ret);
return ret;
} else {
return ret;
}
}
}
return -ENOTSUP;
}
#if ZMK_KEYMAP_HAS_SENSORS
int zmk_keymap_sensor_triggered(uint8_t sensor_number, const struct device *sensor,
int64_t timestamp) {
for (int layer = ZMK_KEYMAP_LAYERS_LEN - 1; layer >= _zmk_keymap_layer_default; layer--) {
if (((_zmk_keymap_layer_state & BIT(layer)) == BIT(layer) ||
layer == _zmk_keymap_layer_default) &&
zmk_sensor_keymap[layer] != NULL) {
struct zmk_behavior_binding *binding = &zmk_sensor_keymap[layer][sensor_number];
const struct device *behavior;
int ret;
LOG_DBG("layer: %d sensor_number: %d, binding name: %s", layer, sensor_number,
log_strdup(binding->behavior_dev));
behavior = device_get_binding(binding->behavior_dev);
if (!behavior) {
LOG_DBG("No behavior assigned to %d on layer %d", sensor_number, layer);
continue;
}
ret = behavior_sensor_keymap_binding_triggered(binding, sensor, timestamp);
if (ret > 0) {
LOG_DBG("behavior processing to continue to next layer");
continue;
} else if (ret < 0) {
LOG_DBG("Behavior returned error: %d", ret);
return ret;
} else {
return ret;
}
}
}
return -ENOTSUP;
}
#endif /* ZMK_KEYMAP_HAS_SENSORS */
int keymap_listener(const struct zmk_event_header *eh) {
if (is_position_state_changed(eh)) {
const struct position_state_changed *ev = cast_position_state_changed(eh);
return zmk_keymap_position_state_changed(ev->position, ev->state, ev->timestamp);
#if ZMK_KEYMAP_HAS_SENSORS
} else if (is_sensor_event(eh)) {
const struct sensor_event *ev = cast_sensor_event(eh);
return zmk_keymap_sensor_triggered(ev->sensor_number, ev->sensor, ev->timestamp);
#endif /* ZMK_KEYMAP_HAS_SENSORS */
}
return -ENOTSUP;
}
ZMK_LISTENER(keymap, keymap_listener);
ZMK_SUBSCRIPTION(keymap, position_state_changed);
#if ZMK_KEYMAP_HAS_SENSORS
ZMK_SUBSCRIPTION(keymap, sensor_event);
#endif /* ZMK_KEYMAP_HAS_SENSORS */
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