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- // 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,
- };
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