forked from Imagelibrary/rtems
1480c3f5e8
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.
77 lines
2.6 KiB
C
77 lines
2.6 KiB
C
/* SPDX-License-Identifier: BSD-2-Clause */
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/**
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* @file
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*
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* @ingroup RTEMSBSPsShared
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*
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* @brief Header defining architecture-specific clock functions.
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*/
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/*
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* Copyright (C) 2020 On-Line Applications Research Corporation (OAR)
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* Written by Kinsey Moore <kinsey.moore@oarcorp.com>
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <rtems/score/basedefs.h>
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/**
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* This function returns the current compare value for the ARM General Purpose
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* Timer.
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*
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* @return The current compare value.
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*/
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uint64_t arm_gt_clock_get_compare_value(void);
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/**
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* This function sets the current compare value for the ARM General Purpose
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* Timer.
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*
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* @param[in] cval The value to set as the compare value
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*/
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void arm_gt_clock_set_compare_value(uint64_t cval);
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/**
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* This function returns the count for the ARM General Purpose Timer.
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*
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* @return The current count.
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*/
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uint64_t arm_gt_clock_get_count(void);
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/**
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* This function sets the control register for the ARM General Purpose Timer.
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*
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* @param[in] ctl The value to set to the control register
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*/
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void arm_gt_clock_set_control(uint32_t ctl);
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/**
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* This function gets the frequency and IRQ number used by the ARM General
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* Purpose Timer.
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*
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* @param[out] frequency The frequency at which the timer will fire.
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* @param[out] irq The number of the IRQ on which the timer will fire.
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*/
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void arm_generic_timer_get_config(uint32_t *frequency, uint32_t *irq);
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