| /* |
| * Copyright (c) 2021 Linumiz |
| * |
| * SPDX-License-Identifier: Apache-2.0 |
| */ |
| |
| #define DT_DRV_COMPAT hzgrow_r502a |
| |
| #include <zephyr/kernel.h> |
| #include <zephyr/drivers/gpio.h> |
| #include <zephyr/drivers/sensor.h> |
| #include <zephyr/drivers/uart.h> |
| #include <zephyr/logging/log.h> |
| |
| #include <zephyr/drivers/sensor/grow_r502a.h> |
| #include "grow_r502a.h" |
| |
| LOG_MODULE_DECLARE(GROW_R502A, CONFIG_SENSOR_LOG_LEVEL); |
| |
| static void setup_int(const struct device *dev, bool enable) |
| { |
| const struct grow_r502a_config *cfg = dev->config; |
| |
| gpio_flags_t flags = |
| enable ? GPIO_INT_EDGE_TO_ACTIVE : GPIO_INT_DISABLE; |
| |
| gpio_pin_interrupt_configure_dt(&cfg->int_gpios, flags); |
| } |
| |
| static void process_int(const struct device *dev) |
| { |
| struct grow_r502a_data *drv_data = dev->data; |
| |
| if (drv_data->th_handler != NULL) { |
| drv_data->th_handler(dev, drv_data->th_trigger); |
| } |
| setup_int(dev, true); |
| } |
| |
| int grow_r502a_trigger_set(const struct device *dev, |
| const struct sensor_trigger *trig, |
| sensor_trigger_handler_t handler) |
| { |
| struct grow_r502a_data *drv_data = dev->data; |
| |
| if ((enum sensor_trigger_type_grow_r502a)trig->type == SENSOR_TRIG_TOUCH) { |
| drv_data->th_handler = handler; |
| drv_data->th_trigger = trig; |
| setup_int(dev, true); |
| } else { |
| LOG_ERR("Unsupported sensor trigger"); |
| return -ENOTSUP; |
| } |
| |
| return 0; |
| } |
| |
| static void grow_r502a_gpio_callback(const struct device *dev, |
| struct gpio_callback *cb, uint32_t pins) |
| { |
| struct grow_r502a_data *drv_data = |
| CONTAINER_OF(cb, struct grow_r502a_data, gpio_cb); |
| |
| setup_int(drv_data->gpio_dev, false); |
| |
| #if defined(CONFIG_GROW_R502A_TRIGGER_OWN_THREAD) |
| k_sem_give(&drv_data->gpio_sem); |
| #elif defined(CONFIG_GROW_R502A_TRIGGER_GLOBAL_THREAD) |
| k_work_submit(&drv_data->work); |
| #endif |
| } |
| |
| #if defined(CONFIG_GROW_R502A_TRIGGER_OWN_THREAD) |
| static void grow_r502a_thread(void *p1, void *p2, void *p3) |
| { |
| ARG_UNUSED(p2); |
| ARG_UNUSED(p3); |
| |
| struct grow_r502a_data *drv_data = p1; |
| |
| while (true) { |
| k_sem_take(&drv_data->gpio_sem, K_FOREVER); |
| process_int(drv_data->gpio_dev); |
| } |
| } |
| |
| #elif defined(CONFIG_GROW_R502A_TRIGGER_GLOBAL_THREAD) |
| static void grow_r502a_work_cb(struct k_work *work) |
| { |
| struct grow_r502a_data *drv_data = |
| CONTAINER_OF(work, struct grow_r502a_data, work); |
| |
| process_int(drv_data->gpio_dev); |
| } |
| #endif |
| |
| int grow_r502a_init_interrupt(const struct device *dev) |
| { |
| struct grow_r502a_data *drv_data = dev->data; |
| const struct grow_r502a_config *cfg = dev->config; |
| int rc; |
| |
| if (!gpio_is_ready_dt(&cfg->int_gpios)) { |
| LOG_ERR("GPIO port %s not ready", cfg->int_gpios.port->name); |
| return -ENODEV; |
| } |
| |
| rc = gpio_pin_configure_dt(&cfg->int_gpios, GPIO_INPUT); |
| if (rc < 0) { |
| return rc; |
| } |
| |
| drv_data->gpio_dev = dev; |
| #if defined(CONFIG_GROW_R502A_TRIGGER_OWN_THREAD) |
| k_sem_init(&drv_data->gpio_sem, 0, K_SEM_MAX_LIMIT); |
| |
| k_thread_create(&drv_data->thread, drv_data->thread_stack, |
| CONFIG_GROW_R502A_THREAD_STACK_SIZE, |
| grow_r502a_thread, drv_data, NULL, |
| NULL, K_PRIO_COOP(CONFIG_GROW_R502A_THREAD_PRIORITY), 0, |
| K_NO_WAIT); |
| #elif defined(CONFIG_GROW_R502A_TRIGGER_GLOBAL_THREAD) |
| drv_data->work.handler = grow_r502a_work_cb; |
| #endif |
| |
| gpio_init_callback(&drv_data->gpio_cb, grow_r502a_gpio_callback, |
| BIT(cfg->int_gpios.pin)); |
| |
| rc = gpio_add_callback(cfg->int_gpios.port, &drv_data->gpio_cb); |
| if (rc < 0) { |
| LOG_ERR("Could not set gpio callback."); |
| return rc; |
| } |
| |
| return 0; |
| } |