| /* |
| * Copyright (c) 2022 Würth Elektronik eiSos GmbH & Co. KG |
| * |
| * SPDX-License-Identifier: Apache-2.0 |
| */ |
| |
| #define DT_DRV_COMPAT we_wsen_hids |
| |
| #include <zephyr/logging/log.h> |
| |
| #include "wsen_hids.h" |
| |
| LOG_MODULE_DECLARE(WSEN_HIDS, CONFIG_SENSOR_LOG_LEVEL); |
| |
| static inline void hids_setup_drdy_interrupt(const struct device *dev, bool enable) |
| { |
| const struct hids_config *cfg = dev->config; |
| unsigned int flags = enable ? GPIO_INT_EDGE_TO_ACTIVE : GPIO_INT_DISABLE; |
| |
| gpio_pin_interrupt_configure_dt(&cfg->gpio_drdy, flags); |
| } |
| |
| static inline void hids_handle_drdy_interrupt(const struct device *dev) |
| { |
| struct hids_data *data = dev->data; |
| |
| hids_setup_drdy_interrupt(dev, false); |
| |
| #if defined(CONFIG_WSEN_HIDS_TRIGGER_OWN_THREAD) |
| k_sem_give(&data->drdy_sem); |
| #elif defined(CONFIG_WSEN_HIDS_TRIGGER_GLOBAL_THREAD) |
| k_work_submit(&data->work); |
| #endif |
| } |
| |
| static void hids_process_drdy_interrupt(const struct device *dev) |
| { |
| struct hids_data *data = dev->data; |
| |
| if (data->data_ready_handler != NULL) { |
| data->data_ready_handler(dev, data->data_ready_trigger); |
| } |
| |
| if (data->data_ready_handler != NULL) { |
| hids_setup_drdy_interrupt(dev, true); |
| } |
| } |
| |
| int hids_trigger_set(const struct device *dev, const struct sensor_trigger *trig, |
| sensor_trigger_handler_t handler) |
| { |
| struct hids_data *data = dev->data; |
| const struct hids_config *cfg = dev->config; |
| |
| if (trig->type != SENSOR_TRIG_DATA_READY) { |
| LOG_ERR("Unsupported sensor trigger"); |
| return -ENOTSUP; |
| } |
| |
| hids_setup_drdy_interrupt(dev, false); |
| |
| data->data_ready_handler = handler; |
| if (handler == NULL) { |
| return 0; |
| } |
| |
| data->data_ready_trigger = trig; |
| |
| hids_setup_drdy_interrupt(dev, true); |
| |
| /* |
| * If DRDY is active we probably won't get the rising edge, so |
| * invoke the callback manually. |
| */ |
| if (gpio_pin_get_dt(&cfg->gpio_drdy) > 0) { |
| hids_handle_drdy_interrupt(dev); |
| } |
| |
| return 0; |
| } |
| |
| static void hids_drdy_callback(const struct device *dev, struct gpio_callback *cb, uint32_t pins) |
| { |
| struct hids_data *data = CONTAINER_OF(cb, struct hids_data, data_ready_cb); |
| |
| ARG_UNUSED(pins); |
| |
| hids_handle_drdy_interrupt(data->dev); |
| } |
| |
| #ifdef CONFIG_WSEN_HIDS_TRIGGER_OWN_THREAD |
| static void hids_thread(struct hids_data *data) |
| { |
| while (true) { |
| k_sem_take(&data->drdy_sem, K_FOREVER); |
| hids_process_drdy_interrupt(data->dev); |
| } |
| } |
| #endif /* CONFIG_WSEN_HIDS_TRIGGER_OWN_THREAD */ |
| |
| #ifdef CONFIG_WSEN_HIDS_TRIGGER_GLOBAL_THREAD |
| static void hids_work_cb(struct k_work *work) |
| { |
| struct hids_data *data = CONTAINER_OF(work, struct hids_data, work); |
| |
| hids_process_drdy_interrupt(data->dev); |
| } |
| #endif /* CONFIG_WSEN_HIDS_TRIGGER_GLOBAL_THREAD */ |
| |
| int hids_init_interrupt(const struct device *dev) |
| { |
| struct hids_data *data = dev->data; |
| const struct hids_config *cfg = dev->config; |
| int status; |
| |
| data->dev = dev; |
| |
| if (cfg->gpio_drdy.port == NULL) { |
| LOG_ERR("drdy-gpios is not defined in the device tree."); |
| return -EINVAL; |
| } |
| |
| if (!device_is_ready(cfg->gpio_drdy.port)) { |
| LOG_ERR("Device %s is not ready", cfg->gpio_drdy.port->name); |
| return -ENODEV; |
| } |
| |
| /* Setup data-ready gpio interrupt */ |
| status = gpio_pin_configure_dt(&cfg->gpio_drdy, GPIO_INPUT); |
| if (status < 0) { |
| LOG_ERR("Could not configure %s.%02u", cfg->gpio_drdy.port->name, |
| cfg->gpio_drdy.pin); |
| return status; |
| } |
| |
| gpio_init_callback(&data->data_ready_cb, hids_drdy_callback, BIT(cfg->gpio_drdy.pin)); |
| |
| status = gpio_add_callback(cfg->gpio_drdy.port, &data->data_ready_cb); |
| if (status < 0) { |
| LOG_ERR("Could not set gpio callback."); |
| return status; |
| } |
| |
| /* Enable data-ready interrupt */ |
| if (HIDS_enableDataReadyInterrupt(&data->sensor_interface, HIDS_enable) != WE_SUCCESS) { |
| LOG_ERR("Could not enable data-ready interrupt."); |
| return -EIO; |
| } |
| |
| #if defined(CONFIG_WSEN_HIDS_TRIGGER_OWN_THREAD) |
| k_sem_init(&data->drdy_sem, 0, K_SEM_MAX_LIMIT); |
| |
| k_thread_create(&data->thread, data->thread_stack, CONFIG_WSEN_HIDS_THREAD_STACK_SIZE, |
| (k_thread_entry_t)hids_thread, data, NULL, NULL, |
| K_PRIO_COOP(CONFIG_WSEN_HIDS_THREAD_PRIORITY), 0, K_NO_WAIT); |
| #elif defined(CONFIG_WSEN_HIDS_TRIGGER_GLOBAL_THREAD) |
| data->work.handler = hids_work_cb; |
| #endif |
| |
| hids_setup_drdy_interrupt(dev, true); |
| |
| return 0; |
| } |