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/*
* Copyright (c) 2013 Corey Tabaka
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files
* (the "Software"), to deal in the Software without restriction,
* including without limitation the rights to use, copy, modify, merge,
* publish, distribute, sublicense, and/or sell copies of the Software,
* and to permit persons to whom the Software is furnished to do so,
* subject to the following conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
#include <err.h>
#include <dev/class/uart.h>
ssize_t class_uart_read(struct device *dev, void *buf, size_t len)
{
struct uart_ops *ops = device_get_driver_ops(dev, struct uart_ops, std);
if (!ops)
return ERR_NOT_CONFIGURED;
if (ops->read)
return ops->read(dev, buf, len);
else
return ERR_NOT_SUPPORTED;
}
ssize_t class_uart_write(struct device *dev, const void *buf, size_t len)
{
struct uart_ops *ops = device_get_driver_ops(dev, struct uart_ops, std);
if (!ops)
return ERR_NOT_CONFIGURED;
if (ops->write)
return ops->write(dev, buf, len);
else
return ERR_NOT_SUPPORTED;
}
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