blob: d57b82035dca441f6e5936e7f37dc920bc92c51f [file] [log] [blame]
/*
* Copyright 2024 NXP
* SPDX-License-Identifier: Apache-2.0
*/
#define DT_DRV_COMPAT adi_adp5585
#include <zephyr/drivers/gpio.h>
#include <zephyr/drivers/gpio/gpio_utils.h>
#include <zephyr/drivers/i2c.h>
#include <zephyr/logging/log.h>
#include <zephyr/kernel.h>
#include <zephyr/sys/byteorder.h>
#include <zephyr/drivers/mfd/adp5585.h>
LOG_MODULE_REGISTER(adp5585, CONFIG_GPIO_LOG_LEVEL);
static int mfd_adp5585_software_reset(const struct device *dev)
{
const struct mfd_adp5585_config *config = dev->config;
int ret = 0;
/** Set CONFIG to gpio by default */
uint8_t pin_config_buf[] = { ADP5585_PIN_CONFIG_A, 0x00U, 0x00U };
ret = i2c_write_dt(&config->i2c_bus, pin_config_buf, sizeof(pin_config_buf));
if (ret) {
goto out;
}
out:
if (ret) {
LOG_ERR("%s: software reset failed: %d", dev->name, ret);
}
return ret;
}
static void mfd_adp5585_int_gpio_handler(const struct device *dev, struct gpio_callback *gpio_cb,
uint32_t pins)
{
ARG_UNUSED(dev);
ARG_UNUSED(pins);
struct mfd_adp5585_data *data = CONTAINER_OF(gpio_cb, struct mfd_adp5585_data, int_gpio_cb);
k_work_submit(&data->work);
}
static void mfd_adp5585_work_handler(struct k_work *work)
{
struct mfd_adp5585_data *data = CONTAINER_OF(work, struct mfd_adp5585_data, work);
const struct mfd_adp5585_config *config = data->dev->config;
uint8_t reg_int_status;
int ret = 0;
k_sem_take(&data->lock, K_FOREVER);
/* Read Interrput Flag */
if (ret == 0) {
ret = i2c_reg_read_byte_dt(&config->i2c_bus, ADP5585_INT_STATUS, &reg_int_status);
}
/* Clear Interrput Flag */
if (ret == 0) {
ret = i2c_reg_write_byte_dt(&config->i2c_bus, ADP5585_INT_STATUS, reg_int_status);
}
k_sem_give(&data->lock);
#ifdef CONFIG_GPIO_ADP5585
if ((reg_int_status & ADP5585_INT_GPI) && device_is_ready(data->child.gpio_dev)) {
(void)gpio_adp5585_irq_handler(data->child.gpio_dev);
}
#endif /* CONFIG_GPIO_ADP5585 */
}
static int mfd_adp5585_init(const struct device *dev)
{
const struct mfd_adp5585_config *config = dev->config;
struct mfd_adp5585_data *data = dev->data;
int ret;
if (!i2c_is_ready_dt(&config->i2c_bus)) {
return -ENODEV;
}
/* reset gpio can be left float */
if (gpio_is_ready_dt(&config->reset_gpio)) {
ret = gpio_pin_configure_dt(&config->reset_gpio, GPIO_OUTPUT_INACTIVE);
if (ret) {
LOG_ERR("%s: configure reset pin failed: %d", dev->name, ret);
return ret;
}
} else {
LOG_WRN("%s: reset pin not configured", dev->name);
}
ret = mfd_adp5585_software_reset(dev);
if (ret) {
return ret;
}
if (gpio_is_ready_dt(&config->nint_gpio)) {
ret = gpio_pin_configure_dt(&config->nint_gpio, GPIO_INPUT);
if (ret < 0) {
return ret;
}
ret = gpio_pin_interrupt_configure_dt(&config->nint_gpio, GPIO_INT_EDGE_TO_ACTIVE);
if (ret != 0) {
LOG_ERR("%s: failed to configure INT interrupt: %d", dev->name, ret);
return ret;
}
gpio_init_callback(&data->int_gpio_cb, mfd_adp5585_int_gpio_handler,
BIT(config->nint_gpio.pin));
ret = gpio_add_callback_dt(&config->nint_gpio, &data->int_gpio_cb);
if (ret != 0) {
LOG_ERR("%s: failed to add INT callback: %d", dev->name, ret);
return ret;
}
} else {
LOG_WRN("%s: nint pin not configured", dev->name);
}
LOG_DBG("%s: init ok\r\n", dev->name);
return 0;
}
#define MFD_ADP5585_DEFINE(inst) \
static const struct mfd_adp5585_config mfd_adp5585_config_##inst = { \
.reset_gpio = GPIO_DT_SPEC_INST_GET_OR(inst, reset_gpios, {0}), \
.nint_gpio = GPIO_DT_SPEC_INST_GET_OR(n, nint_gpios, {0}), \
.i2c_bus = I2C_DT_SPEC_INST_GET(inst), \
}; \
static struct mfd_adp5585_data mfd_adp5585_data_##inst = { \
.work = Z_WORK_INITIALIZER(mfd_adp5585_work_handler), \
.lock = Z_SEM_INITIALIZER(mfd_adp5585_data_##inst.lock, 1, 1), \
.dev = DEVICE_DT_INST_GET(inst), \
}; \
\
DEVICE_DT_INST_DEFINE(inst, mfd_adp5585_init, NULL, &mfd_adp5585_data_##inst, \
&mfd_adp5585_config_##inst, POST_KERNEL, \
CONFIG_MFD_ADP5585_INIT_PRIORITY, NULL);
DT_INST_FOREACH_STATUS_OKAY(MFD_ADP5585_DEFINE);