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