1 /*
2 * Copyright 2023 Fabian Blatz <fabianblatz@gmail.com>
3 *
4 * SPDX-License-Identifier: Apache-2.0
5 */
6
7 #define DT_DRV_COMPAT zephyr_lvgl_button_input
8
9 #include "lvgl_common_input.h"
10 #include "lvgl_button_input.h"
11
12 #include <zephyr/logging/log.h>
13
14 LOG_MODULE_DECLARE(lvgl);
15
16 struct lvgl_button_input_config {
17 struct lvgl_common_input_config common_config; /* Needs to be first member */
18 const uint16_t *input_codes;
19 uint8_t num_codes;
20 const lv_coord_t *coordinates;
21 };
22
lvgl_button_process_event(const struct device * dev,struct input_event * evt)23 static void lvgl_button_process_event(const struct device *dev, struct input_event *evt)
24 {
25 struct lvgl_common_input_data *data = dev->data;
26 const struct lvgl_button_input_config *cfg = dev->config;
27 uint8_t i;
28
29 for (i = 0; i < cfg->num_codes; i++) {
30 if (evt->code == cfg->input_codes[i]) {
31 break;
32 }
33 }
34
35 if (i == cfg->num_codes) {
36 LOG_DBG("Ignored input event: %u", evt->code);
37 return;
38 }
39
40 data->pending_event.btn_id = i;
41 data->pending_event.state = evt->value ? LV_INDEV_STATE_PR : LV_INDEV_STATE_REL;
42
43 if (k_msgq_put(cfg->common_config.event_msgq, &data->pending_event, K_NO_WAIT) != 0) {
44 LOG_WRN("Could not put input data into queue");
45 }
46 }
47
lvgl_button_input_init(const struct device * dev)48 int lvgl_button_input_init(const struct device *dev)
49 {
50 struct lvgl_common_input_data *data = dev->data;
51 const struct lvgl_button_input_config *cfg = dev->config;
52 int ret;
53
54 ret = lvgl_input_register_driver(LV_INDEV_TYPE_BUTTON, dev);
55 if (ret < 0) {
56 return ret;
57 }
58
59 lv_indev_set_button_points(data->indev, (const lv_point_t *)cfg->coordinates);
60
61 return ret;
62 }
63
64 #define ASSERT_PROPERTIES(inst) \
65 BUILD_ASSERT(DT_INST_PROP_LEN(inst, input_codes) * 2 == \
66 DT_INST_PROP_LEN(inst, coordinates), \
67 "Property coordinates must contain one coordinate per input-code.")
68
69 #define LVGL_BUTTON_INPUT_DEFINE(inst) \
70 ASSERT_PROPERTIES(inst); \
71 LVGL_INPUT_DEFINE(inst, button, CONFIG_LV_Z_BUTTON_INPUT_MSGQ_COUNT, \
72 lvgl_button_process_event); \
73 static const uint16_t lvgl_button_input_codes_##inst[] = DT_INST_PROP(inst, input_codes); \
74 static const lv_coord_t lvgl_button_coordinates_##inst[] = \
75 DT_INST_PROP(inst, coordinates); \
76 static const struct lvgl_button_input_config lvgl_button_input_config_##inst = { \
77 .common_config.event_msgq = &LVGL_INPUT_EVENT_MSGQ(inst, button), \
78 .input_codes = lvgl_button_input_codes_##inst, \
79 .num_codes = DT_INST_PROP_LEN(inst, input_codes), \
80 .coordinates = lvgl_button_coordinates_##inst, \
81 }; \
82 static struct lvgl_common_input_data lvgl_common_input_data_##inst; \
83 DEVICE_DT_INST_DEFINE(inst, NULL, NULL, &lvgl_common_input_data_##inst, \
84 &lvgl_button_input_config_##inst, POST_KERNEL, \
85 CONFIG_INPUT_INIT_PRIORITY, NULL);
86
87 DT_INST_FOREACH_STATUS_OKAY(LVGL_BUTTON_INPUT_DEFINE)
88
