blob: 79383d3815428bd8c24f519c523c25482aceec01 [file] [log] [blame] [edit]
/*
* Copyright (c) 2023 SILA Embedded Solutions GmbH
*
* SPDX-License-Identifier: Apache-2.0
*/
/**
* @file
* @brief GPIO driver for the ADS114S0x AFE.
*/
#define DT_DRV_COMPAT ti_ads114s0x_gpio
#include <zephyr/drivers/gpio.h>
#include <zephyr/kernel.h>
#define LOG_LEVEL CONFIG_GPIO_LOG_LEVEL
#include <zephyr/logging/log.h>
LOG_MODULE_REGISTER(gpio_ads114s0x);
#include <zephyr/drivers/adc/ads114s0x.h>
#include <zephyr/drivers/gpio/gpio_utils.h>
struct gpio_ads114s0x_config {
/* gpio_driver_config needs to be first */
struct gpio_driver_config common;
const struct device *parent;
};
struct gpio_ads114s0x_data {
/* gpio_driver_data needs to be first */
struct gpio_driver_data common;
};
static int gpio_ads114s0x_config(const struct device *dev, gpio_pin_t pin, gpio_flags_t flags)
{
const struct gpio_ads114s0x_config *config = dev->config;
int err = 0;
if ((flags & (GPIO_INPUT | GPIO_OUTPUT)) == GPIO_DISCONNECTED) {
return ads114s0x_gpio_deconfigure(config->parent, pin);
}
if ((flags & GPIO_SINGLE_ENDED) != 0) {
return -ENOTSUP;
}
if ((flags & (GPIO_PULL_UP | GPIO_PULL_DOWN)) != 0) {
return -ENOTSUP;
}
if (flags & GPIO_INT_ENABLE) {
/* ads114s0x GPIOs do not support interrupts */
return -ENOTSUP;
}
switch (flags & GPIO_DIR_MASK) {
case GPIO_INPUT:
err = ads114s0x_gpio_set_input(config->parent, pin);
break;
case GPIO_OUTPUT:
err = ads114s0x_gpio_set_output(config->parent, pin,
(flags & GPIO_OUTPUT_INIT_HIGH) != 0);
break;
default:
return -ENOTSUP;
}
return err;
}
static int gpio_ads114s0x_port_get_raw(const struct device *dev, gpio_port_value_t *value)
{
const struct gpio_ads114s0x_config *config = dev->config;
return ads114s0x_gpio_port_get_raw(config->parent, value);
}
static int gpio_ads114s0x_port_set_masked_raw(const struct device *dev, gpio_port_pins_t mask,
gpio_port_value_t value)
{
const struct gpio_ads114s0x_config *config = dev->config;
return ads114s0x_gpio_port_set_masked_raw(config->parent, mask, value);
}
static int gpio_ads114s0x_port_set_bits_raw(const struct device *dev, gpio_port_pins_t pins)
{
const struct gpio_ads114s0x_config *config = dev->config;
return ads114s0x_gpio_port_set_masked_raw(config->parent, pins, pins);
}
static int gpio_ads114s0x_port_clear_bits_raw(const struct device *dev, gpio_port_pins_t pins)
{
const struct gpio_ads114s0x_config *config = dev->config;
return ads114s0x_gpio_port_set_masked_raw(config->parent, pins, 0);
}
static int gpio_ads114s0x_port_toggle_bits(const struct device *dev, gpio_port_pins_t pins)
{
const struct gpio_ads114s0x_config *config = dev->config;
return ads114s0x_gpio_port_toggle_bits(config->parent, pins);
}
static int gpio_ads114s0x_pin_interrupt_configure(const struct device *dev, gpio_pin_t pin,
enum gpio_int_mode mode, enum gpio_int_trig trig)
{
ARG_UNUSED(dev);
ARG_UNUSED(pin);
ARG_UNUSED(mode);
ARG_UNUSED(trig);
return -ENOTSUP;
}
static int gpio_ads114s0x_init(const struct device *dev)
{
const struct gpio_ads114s0x_config *config = dev->config;
if (!device_is_ready(config->parent)) {
LOG_ERR("parent ads114s0x device '%s' not ready", config->parent->name);
return -EINVAL;
}
return 0;
}
static const struct gpio_driver_api gpio_ads114s0x_api = {
.pin_configure = gpio_ads114s0x_config,
.port_set_masked_raw = gpio_ads114s0x_port_set_masked_raw,
.port_set_bits_raw = gpio_ads114s0x_port_set_bits_raw,
.port_clear_bits_raw = gpio_ads114s0x_port_clear_bits_raw,
.port_toggle_bits = gpio_ads114s0x_port_toggle_bits,
.pin_interrupt_configure = gpio_ads114s0x_pin_interrupt_configure,
.port_get_raw = gpio_ads114s0x_port_get_raw,
};
BUILD_ASSERT(CONFIG_GPIO_ADS114S0X_INIT_PRIORITY > CONFIG_ADC_INIT_PRIORITY,
"ADS114S0X GPIO driver must be initialized after ADS114S0X ADC driver");
#define GPIO_ADS114S0X_DEVICE(id) \
static const struct gpio_ads114s0x_config gpio_ads114s0x_##id##_cfg = { \
.common = {.port_pin_mask = GPIO_PORT_PIN_MASK_FROM_DT_INST(id)}, \
.parent = DEVICE_DT_GET(DT_INST_BUS(id)), \
}; \
\
static struct gpio_ads114s0x_data gpio_ads114s0x_##id##_data; \
\
DEVICE_DT_INST_DEFINE(id, &gpio_ads114s0x_init, NULL, &gpio_ads114s0x_##id##_data, \
&gpio_ads114s0x_##id##_cfg, POST_KERNEL, \
CONFIG_GPIO_ADS114S0X_INIT_PRIORITY, &gpio_ads114s0x_api);
DT_INST_FOREACH_STATUS_OKAY(GPIO_ADS114S0X_DEVICE)