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_keypad_input
8
9 #include "lvgl_common_input.h"
10 #include "lvgl_keypad_input.h"
11 #include <zephyr/sys/util.h>
12
13 #include <zephyr/logging/log.h>
14
15 LOG_MODULE_DECLARE(lvgl, CONFIG_LV_Z_LOG_LEVEL);
16
17 struct lvgl_keypad_input_config {
18 struct lvgl_common_input_config common_config; /* Needs to be first member */
19 const uint16_t *input_codes;
20 const uint16_t *lvgl_codes;
21 uint8_t num_codes;
22 };
23
lvgl_keypad_process_event(struct input_event * evt,void * user_data)24 static void lvgl_keypad_process_event(struct input_event *evt, void *user_data)
25 {
26 const struct device *dev = user_data;
27 struct lvgl_common_input_data *data = dev->data;
28 const struct lvgl_keypad_input_config *cfg = dev->config;
29 uint8_t i;
30
31 for (i = 0; i < cfg->num_codes; i++) {
32 if (evt->code == cfg->input_codes[i]) {
33 data->pending_event.key = cfg->lvgl_codes[i];
34 break;
35 }
36 }
37
38 if (i == cfg->num_codes) {
39 LOG_WRN("Ignored input event: %u", evt->code);
40 return;
41 }
42
43 data->pending_event.state = evt->value ? LV_INDEV_STATE_PRESSED : LV_INDEV_STATE_RELEASED;
44 if (k_msgq_put(cfg->common_config.event_msgq, &data->pending_event, K_NO_WAIT) != 0) {
45 LOG_WRN("Could not put input data into keypad queue");
46 }
47 }
48
lvgl_keypad_input_init(const struct device * dev)49 int lvgl_keypad_input_init(const struct device *dev)
50 {
51 return lvgl_input_register_driver(LV_INDEV_TYPE_KEYPAD, dev);
52 }
53
54 #define ASSERT_PROPERTIES(inst) \
55 BUILD_ASSERT(DT_INST_PROP_LEN(inst, input_codes) == DT_INST_PROP_LEN(inst, lvgl_codes), \
56 "Property input-codes must have the same length as lvgl-codes.");
57
58 #define LVGL_KEYPAD_INPUT_DEFINE(inst) \
59 ASSERT_PROPERTIES(inst); \
60 LVGL_INPUT_DEFINE(inst, keypad, CONFIG_LV_Z_KEYPAD_INPUT_MSGQ_COUNT, \
61 lvgl_keypad_process_event); \
62 static const uint16_t lvgl_keypad_input_codes_##inst[] = DT_INST_PROP(inst, input_codes); \
63 static const uint16_t lvgl_keypad_lvgl_codes_##inst[] = DT_INST_PROP(inst, lvgl_codes); \
64 static const struct lvgl_keypad_input_config lvgl_keypad_input_config_##inst = { \
65 .common_config.event_msgq = &LVGL_INPUT_EVENT_MSGQ(inst, keypad), \
66 .input_codes = lvgl_keypad_input_codes_##inst, \
67 .lvgl_codes = lvgl_keypad_lvgl_codes_##inst, \
68 .num_codes = DT_INST_PROP_LEN(inst, input_codes), \
69 }; \
70 static struct lvgl_common_input_data lvgl_common_input_data_##inst; \
71 DEVICE_DT_INST_DEFINE(inst, NULL, NULL, &lvgl_common_input_data_##inst, \
72 &lvgl_keypad_input_config_##inst, POST_KERNEL, \
73 CONFIG_INPUT_INIT_PRIORITY, NULL);
74
75 DT_INST_FOREACH_STATUS_OKAY(LVGL_KEYPAD_INPUT_DEFINE)
76
