2ea2d37d60
Adds saving of the last lv_indev_data_t for button and pointer type devices. This is needed because there is currently no way to tell LVGL in the read callback that no event is pending. Preservation of the last state is expected to happen in the port layer for the input devices. This resolves issue #62512. Signed-off-by: Fabian Blatz <fabianblatz@gmail.com>
95 lines
2.9 KiB
C
95 lines
2.9 KiB
C
/*
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* Copyright 2023 Fabian Blatz <fabianblatz@gmail.com>
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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#include "lvgl_common_input.h"
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#include <zephyr/device.h>
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#include <zephyr/kernel.h>
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#include <zephyr/logging/log.h>
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#include <lvgl_input_device.h>
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#include "lvgl_pointer_input.h"
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#include "lvgl_button_input.h"
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#include "lvgl_encoder_input.h"
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LOG_MODULE_DECLARE(lvgl);
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lv_indev_t *lvgl_input_get_indev(const struct device *dev)
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{
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struct lvgl_common_input_data *common_data = dev->data;
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return common_data->indev;
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}
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static void lvgl_input_read_cb(lv_indev_drv_t *drv, lv_indev_data_t *data)
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{
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const struct device *dev = drv->user_data;
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const struct lvgl_common_input_config *cfg = dev->config;
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struct lvgl_common_input_data *common_data = dev->data;
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if (k_msgq_get(cfg->event_msgq, data, K_NO_WAIT) != 0) {
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memcpy(data, &common_data->previous_event, sizeof(lv_indev_data_t));
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if (drv->type == LV_INDEV_TYPE_ENCODER) {
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data->enc_diff = 0; /* For encoders, clear last movement */
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}
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data->continue_reading = false;
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return;
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}
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memcpy(&common_data->previous_event, data, sizeof(lv_indev_data_t));
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data->continue_reading = k_msgq_num_used_get(cfg->event_msgq) > 0;
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}
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int lvgl_input_register_driver(lv_indev_type_t indev_type, const struct device *dev)
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{
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/* Currently no indev binding has its dedicated data
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* if that ever changes ensure that `lvgl_common_input_data`
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* remains the first member
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*/
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struct lvgl_common_input_data *common_data = dev->data;
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if (common_data == NULL) {
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return -EINVAL;
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}
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lv_indev_drv_init(&common_data->indev_drv);
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common_data->indev_drv.type = indev_type;
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common_data->indev_drv.read_cb = lvgl_input_read_cb;
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common_data->indev_drv.user_data = (void *)dev;
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common_data->indev = lv_indev_drv_register(&common_data->indev_drv);
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if (common_data->indev == NULL) {
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return -EINVAL;
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}
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return 0;
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}
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#define LV_DEV_INIT(node_id, init_fn) \
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do { \
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int ret = init_fn(DEVICE_DT_GET(node_id)); \
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if (ret) { \
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return ret; \
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} \
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} while (0)
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int lvgl_init_input_devices(void)
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{
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#ifdef CONFIG_LV_Z_POINTER_INPUT
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DT_FOREACH_STATUS_OKAY_VARGS(zephyr_lvgl_pointer_input, LV_DEV_INIT,
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lvgl_pointer_input_init);
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#endif /* CONFIG_LV_Z_POINTER_INPUT */
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#ifdef CONFIG_LV_Z_BUTTON_INPUT
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DT_FOREACH_STATUS_OKAY_VARGS(zephyr_lvgl_button_input, LV_DEV_INIT, lvgl_button_input_init);
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#endif /* CONFIG_LV_Z_BUTTON_INPUT */
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#ifdef CONFIG_LV_Z_ENCODER_INPUT
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DT_FOREACH_STATUS_OKAY_VARGS(zephyr_lvgl_encoder_input, LV_DEV_INIT,
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lvgl_encoder_input_init);
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#endif /* CONFIG_LV_Z_ENCODER_INPUT */
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return 0;
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}
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