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bsps: Break out AArch32 portions of GPT driver

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This breaks AArch32-specific portions of the ARM GPT driver into their
own file so that the generic code can be moved for reuse by other
architectures.
This commit is contained in:
Kinsey Moore
2020-10-05 16:11:39 -05:00
committed by Joel Sherrill
parent 647a60e2c3
commit 1480c3f5e8
18 changed files with 189 additions and 52 deletions
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bsps/include/dev/clock/arm-generic-timer.h
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/* SPDX-License-Identifier: BSD-2-Clause */
/**
* @file
*
* @ingroup RTEMSBSPsShared
*
* @brief Header defining architecture-specific clock functions.
*/
/*
* Copyright (C) 2020 On-Line Applications Research Corporation (OAR)
* Written by Kinsey Moore <kinsey.moore@oarcorp.com>
*
* 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.
*/
#include <rtems/score/basedefs.h>
/**
* This function returns the current compare value for the ARM General Purpose
* Timer.
*
* @return The current compare value.
*/
uint64_t arm_gt_clock_get_compare_value(void);
/**
* This function sets the current compare value for the ARM General Purpose
* Timer.
*
* @param[in] cval The value to set as the compare value
*/
void arm_gt_clock_set_compare_value(uint64_t cval);
/**
* This function returns the count for the ARM General Purpose Timer.
*
* @return The current count.
*/
uint64_t arm_gt_clock_get_count(void);
/**
* This function sets the control register for the ARM General Purpose Timer.
*
* @param[in] ctl The value to set to the control register
*/
void arm_gt_clock_set_control(uint32_t ctl);
/**
* This function gets the frequency and IRQ number used by the ARM General
* Purpose Timer.
*
* @param[out] frequency The frequency at which the timer will fire.
* @param[out] irq The number of the IRQ on which the timer will fire.
*/
void arm_generic_timer_get_config(uint32_t *frequency, uint32_t *irq);