| /* |
| * SPDX-License-Identifier: Apache-2.0 |
| * |
| * Copyright (c) 2023 Linumiz |
| */ |
| |
| #include "mc3419.h" |
| #include <zephyr/logging/log.h> |
| |
| LOG_MODULE_DECLARE(MC3419, CONFIG_SENSOR_LOG_LEVEL); |
| |
| static void mc3419_gpio_callback(const struct device *dev, |
| struct gpio_callback *cb, |
| uint32_t pin_mask) |
| { |
| struct mc3419_driver_data *data = CONTAINER_OF(cb, |
| struct mc3419_driver_data, gpio_cb); |
| |
| const struct mc3419_config *cfg = data->gpio_dev->config; |
| |
| if ((pin_mask & BIT(cfg->int_gpio.pin)) == 0U) { |
| return; |
| } |
| |
| #if defined(CONFIG_MC3419_TRIGGER_OWN_THREAD) |
| k_sem_give(&data->trig_sem); |
| #else |
| k_work_submit(&data->work); |
| #endif |
| } |
| |
| static void mc3419_process_int(const struct device *dev) |
| { |
| int ret = 0; |
| const struct mc3419_config *cfg = dev->config; |
| const struct mc3419_driver_data *data = dev->data; |
| uint8_t int_source = 0; |
| |
| ret = i2c_reg_read_byte_dt(&cfg->i2c, MC3419_REG_INT_STATUS, &int_source); |
| if (ret < 0) { |
| goto exit; |
| } |
| |
| if (int_source & MC3419_DATA_READY_MASK) { |
| if (data->handler[MC3419_TRIG_DATA_READY]) { |
| data->handler[MC3419_TRIG_DATA_READY](dev, |
| data->trigger[MC3419_TRIG_DATA_READY]); |
| } |
| } |
| |
| if (int_source & MC3419_ANY_MOTION_MASK) { |
| if (data->handler[MC3419_TRIG_ANY_MOTION]) { |
| data->handler[MC3419_TRIG_ANY_MOTION](dev, |
| data->trigger[MC3419_TRIG_ANY_MOTION]); |
| } |
| } |
| exit: |
| ret = i2c_reg_write_byte_dt(&cfg->i2c, MC3419_REG_INT_STATUS, |
| MC3419_INT_CLEAR); |
| if (ret < 0) { |
| LOG_ERR("Failed to clear interrupt (%d)", ret); |
| } |
| } |
| |
| #if defined(CONFIG_MC3419_TRIGGER_OWN_THREAD) |
| static void mc3419_thread(struct mc3419_driver_data *data) |
| { |
| while (1) { |
| k_sem_take(&data->trig_sem, K_FOREVER); |
| mc3419_process_int(data->gpio_dev); |
| } |
| } |
| #else |
| static void mc3419_work_cb(struct k_work *work) |
| { |
| struct mc3419_driver_data *data = CONTAINER_OF(work, |
| struct mc3419_driver_data, work); |
| |
| mc3419_process_int(data->gpio_dev); |
| } |
| #endif |
| |
| int mc3419_configure_trigger(const struct device *dev, |
| const struct sensor_trigger *trig, |
| sensor_trigger_handler_t handler) |
| { |
| int ret = 0; |
| uint8_t buf = 0; |
| const struct mc3419_config *cfg = dev->config; |
| struct mc3419_driver_data *data = dev->data; |
| |
| if (!(trig->type & SENSOR_TRIG_DATA_READY) && |
| !(trig->type & SENSOR_TRIG_MOTION)) { |
| LOG_ERR("Unsupported sensor trigger"); |
| return -ENOTSUP; |
| } |
| |
| if (trig->type & SENSOR_TRIG_DATA_READY) { |
| data->handler[MC3419_TRIG_DATA_READY] = handler; |
| data->trigger[MC3419_TRIG_DATA_READY] = trig; |
| buf |= MC3419_DATA_READY_MASK; |
| } |
| |
| if (trig->type & SENSOR_TRIG_MOTION) { |
| uint8_t int_mask = MC3419_ANY_MOTION_MASK; |
| |
| buf |= MC3419_ANY_MOTION_MASK; |
| data->handler[MC3419_TRIG_ANY_MOTION] = handler; |
| data->trigger[MC3419_TRIG_ANY_MOTION] = trig; |
| |
| ret = i2c_reg_update_byte_dt(&cfg->i2c, MC3419_REG_MOTION_CTRL, |
| int_mask, handler ? int_mask : 0); |
| if (ret < 0) { |
| LOG_ERR("Failed to configure motion interrupt (%d)", ret); |
| return ret; |
| } |
| } |
| |
| ret = i2c_reg_update_byte_dt(&cfg->i2c, MC3419_REG_INT_CTRL, |
| buf, buf); |
| if (ret < 0) { |
| LOG_ERR("Failed to configure interrupt (%d)", ret); |
| return ret; |
| } |
| |
| gpio_pin_interrupt_configure_dt(&cfg->int_gpio, GPIO_INT_EDGE_FALLING); |
| |
| return ret; |
| } |
| |
| int mc3419_trigger_init(const struct device *dev) |
| { |
| int ret = 0; |
| struct mc3419_driver_data *data = dev->data; |
| const struct mc3419_config *cfg = dev->config; |
| |
| if (!gpio_is_ready_dt(&cfg->int_gpio)) { |
| LOG_ERR("GPIO port %s not ready", cfg->int_gpio.port->name); |
| return -ENODEV; |
| } |
| |
| ret = gpio_pin_configure_dt(&cfg->int_gpio, GPIO_INPUT); |
| if (ret < 0) { |
| LOG_ERR("Failed to configure interrupt gpio"); |
| return ret; |
| } |
| |
| data->gpio_dev = dev; |
| |
| #if defined(CONFIG_MC3419_TRIGGER_OWN_THREAD) |
| k_sem_init(&data->trig_sem, 0, 1); |
| k_thread_create(&data->thread, data->thread_stack, |
| CONFIG_MC3419_THREAD_STACK_SIZE, |
| (k_thread_entry_t)mc3419_thread, data, NULL, |
| NULL, K_PRIO_COOP(CONFIG_MC3419_THREAD_PRIORITY), 0, |
| K_NO_WAIT); |
| #else |
| k_work_init(&data->work, mc3419_work_cb); |
| #endif |
| gpio_init_callback(&data->gpio_cb, mc3419_gpio_callback, |
| BIT(cfg->int_gpio.pin)); |
| ret = gpio_add_callback(cfg->int_gpio.port, &data->gpio_cb); |
| if (ret < 0) { |
| LOG_ERR("Failed to set int callback"); |
| return ret; |
| } |
| |
| if (cfg->int_cfg) { |
| ret = i2c_reg_write_byte_dt(&cfg->i2c, MC3419_REG_COMM_CTRL, |
| MC3419_INT_ROUTE); |
| if (ret < 0) { |
| LOG_ERR("Failed to route the interrupt to INT2 pin (%d)", ret); |
| return ret; |
| } |
| } |
| |
| return 0; |
| } |