4  * SPDX-License-Identifier: Apache-2.0
10 #include <zephyr/drivers/gpio.h>
11 #include <zephyr/drivers/gpio/gpio_nct38xx.h>
12 #include <zephyr/drivers/mfd/nct38xx.h>
22 	/* Lock for NCT38xx register access */
30 	/* Alert GPIO pin */
32 	/* NCT38XX devices which share the same alert pin */
34 	/* Number of NCT38XX devices on the alert pin */
46 	/* Lock for NCT38xx register access */
56 	k_work_submit(&data->alert_worker);  in nct38xx_alert_callback()
64 	k_sem_take(mfd->lock, K_FOREVER);  in nct38xx_alert_is_active()
67 	ret = i2c_burst_read_dt(mfd->i2c_dev, NCT38XX_REG_ALERT, (uint8_t *)&alert,  in nct38xx_alert_is_active()
72 	ret = i2c_burst_read_dt(mfd->i2c_dev, NCT38XX_REG_ALERT_MASK,  in nct38xx_alert_is_active()
80 		ret = i2c_burst_write_dt(mfd->i2c_dev, NCT38XX_REG_ALERT,  in nct38xx_alert_is_active()
85 	k_sem_give(mfd->lock);  in nct38xx_alert_is_active()
103 	const struct nct38xx_alert_config *const config = data->alert_dev->config;  in nct38xx_alert_worker()
106 		/* NCT38XX device handler */  in nct38xx_alert_worker()
107 		for (int i = 0; i < config->nct38xx_num; i++) {  in nct38xx_alert_worker()
108 			struct nct38xx_mfd *mfd = &data->mfd[i];  in nct38xx_alert_worker()
111 				nct38xx_gpio_alert_handler(config->nct38xx_dev[i]);  in nct38xx_alert_worker()
115 	} while (gpio_pin_get_dt(&config->irq_gpio));  in nct38xx_alert_worker()
120 	const struct nct38xx_alert_config *const config = dev->config;  in nct38xx_alert_init()
121 	struct nct38xx_alert_data *const data = dev->data;  in nct38xx_alert_init()
124 	/* Check NCT38XX devices are all ready. */  in nct38xx_alert_init()
125 	for (int i = 0; i < config->nct38xx_num; i++) {  in nct38xx_alert_init()
126 		if (!device_is_ready(config->nct38xx_dev[i])) {  in nct38xx_alert_init()
127 			LOG_ERR("%s device not ready", config->nct38xx_dev[i]->name);  in nct38xx_alert_init()
128 			return -ENODEV;  in nct38xx_alert_init()
131 		data->mfd[i].lock = mfd_nct38xx_get_lock_reference(config->nct38xx_dev[i]);  in nct38xx_alert_init()
132 		data->mfd[i].i2c_dev = mfd_nct38xx_get_i2c_dt_spec(config->nct38xx_dev[i]);  in nct38xx_alert_init()
136 	k_work_init(&data->alert_worker, nct38xx_alert_worker);  in nct38xx_alert_init()
138 	if (!gpio_is_ready_dt(&config->irq_gpio)) {  in nct38xx_alert_init()
139 		LOG_ERR("%s device not ready", config->irq_gpio.port->name);  in nct38xx_alert_init()
140 		return -ENODEV;  in nct38xx_alert_init()
143 	gpio_pin_configure_dt(&config->irq_gpio, GPIO_INPUT);  in nct38xx_alert_init()
145 	gpio_init_callback(&data->gpio_cb, nct38xx_alert_callback, BIT(config->irq_gpio.pin));  in nct38xx_alert_init()
147 	ret = gpio_add_callback(config->irq_gpio.port, &data->gpio_cb);  in nct38xx_alert_init()
152 	gpio_pin_interrupt_configure_dt(&config->irq_gpio, GPIO_INT_EDGE_TO_ACTIVE);  in nct38xx_alert_init()
157 /* NCT38XX alert driver must be initialized after NCT38XX GPIO driver */