| /* |
| * Copyright 2023 Fabian Blatz <fabianblatz@gmail.com> |
| * |
| * SPDX-License-Identifier: Apache-2.0 |
| */ |
| |
| #define DT_DRV_COMPAT zephyr_lvgl_encoder_input |
| |
| #include "lvgl_common_input.h" |
| #include "lvgl_encoder_input.h" |
| |
| #include <zephyr/logging/log.h> |
| |
| LOG_MODULE_DECLARE(lvgl, CONFIG_LV_Z_LOG_LEVEL); |
| |
| struct lvgl_encoder_input_config { |
| struct lvgl_common_input_config common_config; /* Needs to be first member */ |
| int rotation_input_code; |
| int button_input_code; |
| }; |
| |
| static void lvgl_encoder_process_event(const struct device *dev, struct input_event *evt) |
| { |
| struct lvgl_common_input_data *data = dev->data; |
| const struct lvgl_encoder_input_config *cfg = dev->config; |
| |
| if (evt->code == cfg->rotation_input_code) { |
| data->pending_event.enc_diff = evt->value; |
| } else if (evt->code == cfg->button_input_code) { |
| data->pending_event.state = evt->value ? LV_INDEV_STATE_PR : LV_INDEV_STATE_REL; |
| } else { |
| LOG_DBG("Ignored input event: %u", evt->code); |
| return; |
| } |
| |
| if (k_msgq_put(cfg->common_config.event_msgq, &data->pending_event, K_NO_WAIT) != 0) { |
| LOG_WRN("Could not put input data into queue"); |
| } |
| } |
| |
| int lvgl_encoder_input_init(const struct device *dev) |
| { |
| return lvgl_input_register_driver(LV_INDEV_TYPE_ENCODER, dev); |
| } |
| |
| #define BUTTON_CODE(inst) DT_INST_PROP_OR(inst, button_input_code, -1) |
| #define ROTATION_CODE(inst) DT_INST_PROP(inst, rotation_input_code) |
| |
| #define ASSERT_PROPERTIES(inst) \ |
| BUILD_ASSERT(IN_RANGE(ROTATION_CODE(inst), 0, 65536), \ |
| "Property rotation-input-code needs to be between 0 and 65536."); \ |
| BUILD_ASSERT(!DT_INST_NODE_HAS_PROP(inst, button_input_code) || \ |
| IN_RANGE(BUTTON_CODE(inst), 0, 65536), \ |
| "Property button-input-code needs to be between 0 and 65536."); \ |
| BUILD_ASSERT(ROTATION_CODE(inst) != BUTTON_CODE(inst), \ |
| "Property rotation-input-code and button-input-code should not be equal.") |
| |
| #define LVGL_ENCODER_INPUT_DEFINE(inst) \ |
| ASSERT_PROPERTIES(inst); \ |
| LVGL_INPUT_DEFINE(inst, encoder, CONFIG_LV_Z_ENCODER_INPUT_MSGQ_COUNT, \ |
| lvgl_encoder_process_event); \ |
| static const struct lvgl_encoder_input_config lvgl_encoder_input_config_##inst = { \ |
| .common_config.event_msgq = &LVGL_INPUT_EVENT_MSGQ(inst, encoder), \ |
| .rotation_input_code = ROTATION_CODE(inst), \ |
| .button_input_code = BUTTON_CODE(inst), \ |
| }; \ |
| static struct lvgl_common_input_data lvgl_common_input_data_##inst; \ |
| DEVICE_DT_INST_DEFINE(inst, NULL, NULL, &lvgl_common_input_data_##inst, \ |
| &lvgl_encoder_input_config_##inst, POST_KERNEL, \ |
| CONFIG_INPUT_INIT_PRIORITY, NULL); |
| |
| DT_INST_FOREACH_STATUS_OKAY(LVGL_ENCODER_INPUT_DEFINE) |