92 lines
2.7 KiB
C
92 lines
2.7 KiB
C
/*
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* Copyright (c) 2015, Freescale Semiconductor, Inc.
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* Copyright 2016-2017 NXP
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* All rights reserved.
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*
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* SPDX-License-Identifier: BSD-3-Clause
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*/
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#include "fsl_dmamux.h"
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/*******************************************************************************
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* Definitions
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******************************************************************************/
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/* Component ID definition, used by tools. */
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#ifndef FSL_COMPONENT_ID
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#define FSL_COMPONENT_ID "platform.drivers.dmamux"
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#endif
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/*******************************************************************************
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* Prototypes
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******************************************************************************/
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/*!
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* @brief Get instance number for DMAMUX.
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*
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* @param base DMAMUX peripheral base address.
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*/
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static uint32_t DMAMUX_GetInstance(DMAMUX_Type *base);
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/*******************************************************************************
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* Variables
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******************************************************************************/
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/*! @brief Array to map DMAMUX instance number to base pointer. */
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static DMAMUX_Type *const s_dmamuxBases[] = DMAMUX_BASE_PTRS;
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#if !(defined(FSL_SDK_DISABLE_DRIVER_CLOCK_CONTROL) && FSL_SDK_DISABLE_DRIVER_CLOCK_CONTROL)
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/*! @brief Array to map DMAMUX instance number to clock name. */
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static const clock_ip_name_t s_dmamuxClockName[] = DMAMUX_CLOCKS;
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#endif /* FSL_SDK_DISABLE_DRIVER_CLOCK_CONTROL */
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/*******************************************************************************
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* Code
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******************************************************************************/
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static uint32_t DMAMUX_GetInstance(DMAMUX_Type *base)
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{
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uint32_t instance;
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/* Find the instance index from base address mappings. */
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for (instance = 0; instance < ARRAY_SIZE(s_dmamuxBases); instance++)
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{
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if (s_dmamuxBases[instance] == base)
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{
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break;
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}
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}
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assert(instance < ARRAY_SIZE(s_dmamuxBases));
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return instance;
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}
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/*!
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* brief Initializes the DMAMUX peripheral.
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*
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* This function ungates the DMAMUX clock.
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*
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* param base DMAMUX peripheral base address.
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*
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*/
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void DMAMUX_Init(DMAMUX_Type *base)
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{
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#if !(defined(FSL_SDK_DISABLE_DRIVER_CLOCK_CONTROL) && FSL_SDK_DISABLE_DRIVER_CLOCK_CONTROL)
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CLOCK_EnableClock(s_dmamuxClockName[DMAMUX_GetInstance(base)]);
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#endif /* FSL_SDK_DISABLE_DRIVER_CLOCK_CONTROL */
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}
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/*!
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* brief Deinitializes the DMAMUX peripheral.
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*
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* This function gates the DMAMUX clock.
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*
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* param base DMAMUX peripheral base address.
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*/
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void DMAMUX_Deinit(DMAMUX_Type *base)
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{
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#if !(defined(FSL_SDK_DISABLE_DRIVER_CLOCK_CONTROL) && FSL_SDK_DISABLE_DRIVER_CLOCK_CONTROL)
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CLOCK_DisableClock(s_dmamuxClockName[DMAMUX_GetInstance(base)]);
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#endif /* FSL_SDK_DISABLE_DRIVER_CLOCK_CONTROL */
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}
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