serial_nulldev.c
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/*
* Copyright (c) 2015 National Instruments
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <dm.h>
#include <serial.h>
static int nulldev_serial_setbrg(struct udevice *dev, int baudrate)
{
return 0;
}
static int nulldev_serial_getc(struct udevice *dev)
{
return -EAGAIN;
}
static int nulldev_serial_pending(struct udevice *dev, bool input)
{
return 0;
}
static int nulldev_serial_input(struct udevice *dev)
{
return 0;
}
static int nulldev_serial_putc(struct udevice *dev, const char ch)
{
return 0;
}
static const struct udevice_id nulldev_serial_ids[] = {
{ .compatible = "nulldev-serial" },
{ }
};
const struct dm_serial_ops nulldev_serial_ops = {
.putc = nulldev_serial_putc,
.pending = nulldev_serial_pending,
.getc = nulldev_serial_getc,
.setbrg = nulldev_serial_setbrg,
};
U_BOOT_DRIVER(serial_nulldev) = {
.name = "serial_nulldev",
.id = UCLASS_SERIAL,
.of_match = nulldev_serial_ids,
.ops = &nulldev_serial_ops,
};