/* SPDX-License-Identifier: BSD-2-Clause */
/**
* @file
*
* @brief Real-Time Clock Driver Interface
*
* Real-time clock driver interface.
*/
/*
* COPYRIGHT (c) 1989-2001.
* On-Line Applications Research Corporation (OAR).
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. 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.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "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 COPYRIGHT OWNER OR CONTRIBUTORS 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.
*/
#ifndef _RTEMS_RTC_H
#define _RTEMS_RTC_H
#include <rtems.h>
#ifdef __cplusplus
extern "C" {
#endif
/**
* @defgroup rtems_rtc Real-Time Clock Driver Interface
*
* @ingroup RTEMSDeviceDrivers
*
* This driver interface provides support to read and set the real-time clock
* and to initialize the time of day for the system.
*/
/**@{**/
/**
* Device file name path.
*/
#define RTC_DEVICE_NAME "/dev/rtc"
/**
* Device driver table entry.
*/
#define RTC_DRIVER_TABLE_ENTRY \
{ rtc_initialize, rtc_open, rtc_close, \
rtc_read, rtc_write, rtc_control }
/**
* Initializes the real-time clock device and sets the time of day for the
* system.
*
* If the real-time clock provides an invalid time of day value the system time
* of day must remain untouched.
*/
rtems_device_driver rtc_initialize(
rtems_device_major_number,
rtems_device_minor_number,
void *
);
/**
* Opens the real-time clock device.
*/
rtems_device_driver rtc_open(
rtems_device_major_number,
rtems_device_minor_number,
void *
);
/**
* Closes the real-time clock device.
*/
rtems_device_driver rtc_close(
rtems_device_major_number,
rtems_device_minor_number,
void *
);
/**
* Reads the real-time clock value.
*
* The value will be returned in a @ref rtems_time_of_day structure.
*/
rtems_device_driver rtc_read(
rtems_device_major_number,
rtems_device_minor_number,
void *
);
/**
* Sets the real-time clock value.
*
* The value will be set from a @ref rtems_time_of_day structure.
*/
rtems_device_driver rtc_write(
rtems_device_major_number,
rtems_device_minor_number,
void *
);
/**
* Controls the real-time clock.
*/
rtems_device_driver rtc_control(
rtems_device_major_number,
rtems_device_minor_number,
void *
);
/** @} */
#ifdef __cplusplus
}
#endif
#endif
