abdb1ef3bc
When no 'display' property is present in LVGL input dev node in DT, we should default to LVGL Default Display to preserve the old behavior and not break LV Input on setups with only one display. Signed-off-by: Abderrahmane JARMOUNI <git@jarmouni.me>
135 lines
4.1 KiB
C
135 lines
4.1 KiB
C
/*
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* Copyright 2023 Fabian Blatz <fabianblatz@gmail.com>
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* Copyright 2025 Abderrahmane JARMOUNI
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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 <lvgl_input_device.h>
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#include <lvgl_display.h>
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#include <zephyr/logging/log.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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#include "lvgl_keypad_input.h"
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LOG_MODULE_DECLARE(lvgl, CONFIG_LV_Z_LOG_LEVEL);
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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_t *indev, lv_indev_data_t *data)
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{
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const struct device *dev = lv_indev_get_user_data(indev);
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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 (lv_indev_get_type(indev) == 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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static lv_display_t *lvgl_input_get_display(const struct device *dev)
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{
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const struct lvgl_common_input_config *cfg = dev->config;
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const struct device *disp_dev = cfg->display_dev;
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struct lvgl_disp_data *lv_disp_data;
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lv_display_t *lv_disp = NULL;
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if (disp_dev == NULL) {
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LOG_DBG("No display phandle is passed in DT, defaulting to LV Default Display");
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return lv_display_get_default();
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}
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for (int i = 0; i < DT_ZEPHYR_DISPLAYS_COUNT; i++) {
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lv_disp = lv_display_get_next(lv_disp);
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if (lv_disp == NULL) {
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LOG_ERR("Could not find LV display objects of all Zephyr displays");
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break;
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}
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lv_disp_data = (struct lvgl_disp_data *)lv_display_get_user_data(lv_disp);
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if (disp_dev == lv_disp_data->display_dev) {
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return lv_disp;
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}
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}
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LOG_ERR("LV display corresponding to display device %s not found", disp_dev->name);
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__ASSERT_NO_MSG(false);
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return NULL;
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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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/* Ensure that `lvgl_common_input_data` remains the first member
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* of indev dedicated data
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*/
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struct lvgl_common_input_data *common_data = dev->data;
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lv_display_t *disp;
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if (common_data == NULL) {
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return -EINVAL;
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}
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common_data->indev = lv_indev_create();
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if (common_data->indev == NULL) {
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return -EINVAL;
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}
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lv_indev_set_type(common_data->indev, indev_type);
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lv_indev_set_read_cb(common_data->indev, lvgl_input_read_cb);
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lv_indev_set_user_data(common_data->indev, (void *)dev);
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disp = lvgl_input_get_display(dev);
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lv_indev_set_display(common_data->indev, disp);
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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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#ifdef CONFIG_LV_Z_KEYPAD_INPUT
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DT_FOREACH_STATUS_OKAY_VARGS(zephyr_lvgl_keypad_input, LV_DEV_INIT, lvgl_keypad_input_init);
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#endif /* CONFIG_LV_Z_KEYPAD_INPUT */
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return 0;
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}
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