blob: 1bd99d88cf2d33a1c3b92c292a2cce5a5d59ad2d [file] [log] [blame] [edit]
/*
* Copyright (c) 2019 Vestas Wind Systems A/S
*
* SPDX-License-Identifier: Apache-2.0
*/
/**
* @file
* @brief GPIO driver for the LMP90xxx AFE.
*/
#define DT_DRV_COMPAT ti_lmp90xxx_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_lmp90xxx);
#include <zephyr/drivers/adc/lmp90xxx.h>
#include <zephyr/drivers/gpio/gpio_utils.h>
struct gpio_lmp90xxx_config {
/* gpio_driver_config needs to be first */
struct gpio_driver_config common;
const struct device *parent;
};
struct gpio_lmp90xxx_data {
/* gpio_driver_data needs to be first */
struct gpio_driver_data common;
};
static int gpio_lmp90xxx_config(const struct device *dev,
gpio_pin_t pin, gpio_flags_t flags)
{
const struct gpio_lmp90xxx_config *config = dev->config;
int err = 0;
if (pin > LMP90XXX_GPIO_MAX) {
return -EINVAL;
}
if ((flags & GPIO_SINGLE_ENDED) != 0) {
return -ENOTSUP;
}
if ((flags & (GPIO_PULL_UP | GPIO_PULL_DOWN)) != 0) {
return -ENOTSUP;
}
if (flags & GPIO_INT_ENABLE) {
/* LMP90xxx GPIOs do not support interrupts */
return -ENOTSUP;
}
switch (flags & GPIO_DIR_MASK) {
case GPIO_INPUT:
err = lmp90xxx_gpio_set_input(config->parent, pin);
break;
case GPIO_OUTPUT:
if ((flags & GPIO_OUTPUT_INIT_HIGH) != 0) {
err = lmp90xxx_gpio_set_pin_value(config->parent, pin,
true);
} else if ((flags & GPIO_OUTPUT_INIT_LOW) != 0) {
err = lmp90xxx_gpio_set_pin_value(config->parent, pin,
false);
}
if (err) {
return err;
}
err = lmp90xxx_gpio_set_output(config->parent, pin);
break;
default:
return -ENOTSUP;
}
return err;
}
static int gpio_lmp90xxx_port_get_raw(const struct device *dev,
gpio_port_value_t *value)
{
const struct gpio_lmp90xxx_config *config = dev->config;
return lmp90xxx_gpio_port_get_raw(config->parent, value);
}
static int gpio_lmp90xxx_port_set_masked_raw(const struct device *dev,
gpio_port_pins_t mask,
gpio_port_value_t value)
{
const struct gpio_lmp90xxx_config *config = dev->config;
return lmp90xxx_gpio_port_set_masked_raw(config->parent, mask, value);
}
static int gpio_lmp90xxx_port_set_bits_raw(const struct device *dev,
gpio_port_pins_t pins)
{
const struct gpio_lmp90xxx_config *config = dev->config;
return lmp90xxx_gpio_port_set_bits_raw(config->parent, pins);
}
static int gpio_lmp90xxx_port_clear_bits_raw(const struct device *dev,
gpio_port_pins_t pins)
{
const struct gpio_lmp90xxx_config *config = dev->config;
return lmp90xxx_gpio_port_clear_bits_raw(config->parent, pins);
}
static int gpio_lmp90xxx_port_toggle_bits(const struct device *dev,
gpio_port_pins_t pins)
{
const struct gpio_lmp90xxx_config *config = dev->config;
return lmp90xxx_gpio_port_toggle_bits(config->parent, pins);
}
static int gpio_lmp90xxx_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_lmp90xxx_init(const struct device *dev)
{
const struct gpio_lmp90xxx_config *config = dev->config;
if (!device_is_ready(config->parent)) {
LOG_ERR("parent LMP90xxx device '%s' not ready",
config->parent->name);
return -EINVAL;
}
return 0;
}
static const struct gpio_driver_api gpio_lmp90xxx_api = {
.pin_configure = gpio_lmp90xxx_config,
.port_set_masked_raw = gpio_lmp90xxx_port_set_masked_raw,
.port_set_bits_raw = gpio_lmp90xxx_port_set_bits_raw,
.port_clear_bits_raw = gpio_lmp90xxx_port_clear_bits_raw,
.port_toggle_bits = gpio_lmp90xxx_port_toggle_bits,
.pin_interrupt_configure = gpio_lmp90xxx_pin_interrupt_configure,
.port_get_raw = gpio_lmp90xxx_port_get_raw,
};
BUILD_ASSERT(CONFIG_GPIO_LMP90XXX_INIT_PRIORITY >
CONFIG_ADC_INIT_PRIORITY,
"LMP90xxx GPIO driver must be initialized after LMP90xxx ADC "
"driver");
#define GPIO_LMP90XXX_DEVICE(id) \
static const struct gpio_lmp90xxx_config gpio_lmp90xxx_##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_lmp90xxx_data gpio_lmp90xxx_##id##_data; \
\
DEVICE_DT_INST_DEFINE(id, \
&gpio_lmp90xxx_init, \
NULL, \
&gpio_lmp90xxx_##id##_data, \
&gpio_lmp90xxx_##id##_cfg, POST_KERNEL, \
CONFIG_GPIO_LMP90XXX_INIT_PRIORITY, \
&gpio_lmp90xxx_api);
DT_INST_FOREACH_STATUS_OKAY(GPIO_LMP90XXX_DEVICE)