| /* |
| * Copyright (c) 2023 Andriy Gelman <andriy.gelman@gmail.com> |
| * |
| * SPDX-License-Identifier: Apache-2.0 |
| */ |
| |
| #include <zephyr/device.h> |
| #include <zephyr/drivers/gpio.h> |
| #include <zephyr/drivers/sensor.h> |
| #include <zephyr/drivers/spi.h> |
| #include <zephyr/kernel.h> |
| #include <zephyr/sys/util.h> |
| #include <zephyr/types.h> |
| |
| #include "adt7310.h" |
| |
| #include <zephyr/logging/log.h> |
| LOG_MODULE_DECLARE(ADT7310, CONFIG_SENSOR_LOG_LEVEL); |
| |
| static void adt7310_gpio_callback(const struct device *dev, struct gpio_callback *cb, |
| uint32_t pins) |
| { |
| struct adt7310_data *drv_data = CONTAINER_OF(cb, struct adt7310_data, gpio_cb); |
| |
| #if defined(CONFIG_ADT7310_TRIGGER_OWN_THREAD) |
| k_sem_give(&drv_data->gpio_sem); |
| #elif defined(CONFIG_ADT7310_TRIGGER_GLOBAL_THREAD) |
| k_work_submit(&drv_data->work); |
| #endif |
| } |
| |
| #if defined(CONFIG_ADT7310_TRIGGER_OWN_THREAD) |
| static void adt7310_thread(void *p1, void *p2, void *p3) |
| { |
| ARG_UNUSED(p2); |
| ARG_UNUSED(p3); |
| |
| struct adt7310_data *drv_data = p1; |
| |
| while (true) { |
| k_sem_take(&drv_data->gpio_sem, K_FOREVER); |
| if (drv_data->th_handler != NULL) { |
| drv_data->th_handler(drv_data->dev, drv_data->th_trigger); |
| } |
| } |
| } |
| |
| #elif defined(CONFIG_ADT7310_TRIGGER_GLOBAL_THREAD) |
| static void adt7310_work_cb(struct k_work *work) |
| { |
| struct adt7310_data *drv_data = CONTAINER_OF(work, struct adt7310_data, work); |
| |
| if (drv_data->th_handler != NULL) { |
| drv_data->th_handler(drv_data->dev, drv_data->th_trigger); |
| } |
| } |
| #endif |
| |
| int adt7310_trigger_set(const struct device *dev, const struct sensor_trigger *trig, |
| sensor_trigger_handler_t handler) |
| { |
| struct adt7310_data *drv_data = dev->data; |
| const struct adt7310_dev_config *cfg = dev->config; |
| |
| if (!cfg->int_gpio.port) { |
| return -ENOTSUP; |
| } |
| |
| if (trig->type != SENSOR_TRIG_THRESHOLD) { |
| LOG_ERR("Unsupported sensor trigger"); |
| return -ENOTSUP; |
| } |
| |
| /* disable the interrupt but ignore error if it's first */ |
| /* time this function is called */ |
| gpio_pin_interrupt_configure_dt(&cfg->int_gpio, GPIO_INT_DISABLE); |
| |
| drv_data->th_handler = handler; |
| |
| if (handler != NULL) { |
| int value, ret; |
| gpio_flags_t flags = GPIO_INT_EDGE_TO_ACTIVE; |
| |
| drv_data->th_trigger = trig; |
| |
| ret = gpio_pin_interrupt_configure_dt(&cfg->int_gpio, flags); |
| if (ret) { |
| drv_data->th_handler = NULL; |
| return ret; |
| } |
| |
| value = gpio_pin_get_dt(&cfg->int_gpio); |
| if (value > 0) { |
| #if defined(CONFIG_ADT7310_TRIGGER_OWN_THREAD) |
| k_sem_give(&drv_data->gpio_sem); |
| #elif defined(CONFIG_ADT7310_TRIGGER_GLOBAL_THREAD) |
| k_work_submit(&drv_data->work); |
| #endif |
| } |
| } |
| |
| return 0; |
| } |
| |
| int adt7310_init_interrupt(const struct device *dev) |
| { |
| struct adt7310_data *drv_data = dev->data; |
| const struct adt7310_dev_config *cfg = dev->config; |
| int ret; |
| |
| if (!gpio_is_ready_dt(&cfg->int_gpio)) { |
| LOG_ERR("%s: device %s is not ready", dev->name, cfg->int_gpio.port->name); |
| return -ENODEV; |
| } |
| |
| gpio_init_callback(&drv_data->gpio_cb, adt7310_gpio_callback, BIT(cfg->int_gpio.pin)); |
| |
| ret = gpio_pin_configure_dt(&cfg->int_gpio, GPIO_INPUT | GPIO_ACTIVE_LOW); |
| if (ret < 0) { |
| return ret; |
| } |
| |
| ret = gpio_add_callback(cfg->int_gpio.port, &drv_data->gpio_cb); |
| if (ret < 0) { |
| return ret; |
| } |
| |
| drv_data->dev = dev; |
| #if defined(CONFIG_ADT7310_TRIGGER_OWN_THREAD) |
| k_sem_init(&drv_data->gpio_sem, 0, 1); |
| k_thread_create(&drv_data->thread, drv_data->thread_stack, |
| CONFIG_ADT7310_THREAD_STACK_SIZE, |
| adt7310_thread, drv_data, |
| NULL, NULL, K_PRIO_COOP(CONFIG_ADT7310_THREAD_PRIORITY), |
| 0, K_NO_WAIT); |
| #elif defined(CONFIG_ADT7310_TRIGGER_GLOBAL_THREAD) |
| drv_data->work.handler = adt7310_work_cb; |
| #endif |
| |
| return 0; |
| } |