Files
SDK_SG200x_V2/u-boot-2021.10/drivers/serial/serial_nulldev.c
carbon 0545e9dc6d init version 2024-05-07
commit d1edce71135cc6d98c0a4b5729774542b676e769
Author: sophgo-forum-service <forum_service@sophgo.com>
Date:   Fri Mar 15 16:07:33 2024 +0800

    [fix] recommend using ssh method to clone repo.
    [fix] fix sensor driver repo branch name.
2024-05-07 19:36:36 +08:00

54 lines
973 B
C

// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright (c) 2015 National Instruments
*/
#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,
};