blob: e854af462271a6847cb4bb5ba3f6cb2e9a94f8f8 [file] [log] [blame]
/** @file
* @brief Modem pin setup for modem context driver
*
* GPIO-based pin handling for the modem context driver
*/
/*
* Copyright (c) 2019 Foundries.io
*
* SPDX-License-Identifier: Apache-2.0
*/
#include <zephyr/types.h>
#include <zephyr/device.h>
#include <zephyr/drivers/gpio.h>
#include "modem_context.h"
int modem_pin_read(struct modem_context *ctx, uint32_t pin)
{
if (pin >= ctx->pins_len) {
return -ENODEV;
}
return gpio_pin_get(ctx->pins[pin].gpio_port_dev,
ctx->pins[pin].pin);
}
int modem_pin_write(struct modem_context *ctx, uint32_t pin, uint32_t value)
{
if (pin >= ctx->pins_len) {
return -ENODEV;
}
return gpio_pin_set(ctx->pins[pin].gpio_port_dev,
ctx->pins[pin].pin, value);
}
int modem_pin_config(struct modem_context *ctx, uint32_t pin, bool enable)
{
if (pin >= ctx->pins_len) {
return -ENODEV;
}
return gpio_pin_configure(ctx->pins[pin].gpio_port_dev,
ctx->pins[pin].pin,
enable ? ctx->pins[pin].init_flags :
GPIO_INPUT);
}
int modem_pin_init(struct modem_context *ctx)
{
int ret;
size_t i;
/* setup port devices and pin directions */
for (i = 0; i < ctx->pins_len; i++) {
ctx->pins[i].gpio_port_dev =
device_get_binding(ctx->pins[i].dev_name);
if (!ctx->pins[i].gpio_port_dev) {
return -ENODEV;
}
ret = modem_pin_config(ctx, i, true);
if (ret < 0) {
return ret;
}
}
return 0;
}