/*
* Copyright (c) 2017 Jiri Svoboda
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* - Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* - Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* - The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <async.h>
#include <errno.h>
#include <io/serial.h>
#include <ipc/serial_ctl.h>
#include <ipc/services.h>
#include <stdlib.h>
/** Open serial port device.
*
* @param sess Session with the serial port device
* @param rchardev Place to store pointer to the new serial port device structure
*
* @return EOK on success, ENOMEM if out of memory, EIO on I/O error
*/
errno_t serial_open(async_sess_t *sess, serial_t **rserial)
{
serial_t *serial;
serial = calloc(1, sizeof(serial_t));
if (serial == NULL)
return ENOMEM;
serial->sess = sess;
*rserial = serial;
return EOK;
}
/** Close serial port device.
*
* Frees the serial port device structure. The underlying session is
* not affected.
*
* @param serial Serial port device or @c NULL
*/
void serial_close(serial_t *serial)
{
free(serial);
}
/** Set serial port communication properties. */
errno_t serial_set_comm_props(serial_t *serial, unsigned rate,
serial_parity_t parity, unsigned datab, unsigned stopb)
{
async_exch_t *exch = async_exchange_begin(serial->sess);
errno_t rc = async_req_4_0(exch, SERIAL_SET_COM_PROPS, rate, parity,
datab, stopb);
async_exchange_end(exch);
return rc;
}
/** Get serial port communication properties. */
errno_t serial_get_comm_props(serial_t *serial, unsigned *rrate,
serial_parity_t *rparity, unsigned *rdatab, unsigned *rstopb)
{
async_exch_t *exch = async_exchange_begin(serial->sess);
sysarg_t rate, parity, datab, stopb;
errno_t rc = async_req_0_4(exch, SERIAL_GET_COM_PROPS, &rate, &parity,
&datab, &stopb);
async_exchange_end(exch);
if (rc != EOK)
return rc;
*rrate = rate;
*rparity = parity;
*rdatab = datab;
*rstopb = stopb;
return EOK;
}
/** @}
*/