127 lines
3.6 KiB
C
127 lines
3.6 KiB
C
/*
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* Copyright (c) 2015, Freescale Semiconductor, Inc.
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* Copyright 2016-2019 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_xbarb.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.xbarb"
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#endif
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typedef union
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{
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uint8_t _u8[2];
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uint16_t _u16;
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} xbarb_u8_u16_t;
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/*******************************************************************************
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* Prototypes
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******************************************************************************/
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/*!
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* @brief Get the XBARB instance from peripheral base address.
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*
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* @param base XBARB peripheral base address.
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* @return XBARB instance.
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*/
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static uint32_t XBARB_GetInstance(XBARB_Type *base);
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/*******************************************************************************
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* Variables
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******************************************************************************/
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/* Array of XBARB peripheral base address. */
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static XBARB_Type *const s_xbarbBases[] = XBARB_BASE_PTRS;
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#if !(defined(FSL_SDK_DISABLE_DRIVER_CLOCK_CONTROL) && FSL_SDK_DISABLE_DRIVER_CLOCK_CONTROL)
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/* Array of XBARB clock name. */
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static const clock_ip_name_t s_xbarbClock[] = XBARB_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 XBARB_GetInstance(XBARB_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_xbarbBases); instance++)
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{
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if (s_xbarbBases[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_xbarbBases));
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return instance;
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}
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/*!
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* brief Initializes the XBARB module.
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*
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* This function un-gates the XBARB clock.
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*
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* param base XBARB peripheral address.
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*/
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void XBARB_Init(XBARB_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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/* Enable XBARB module clock. */
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CLOCK_EnableClock(s_xbarbClock[XBARB_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 Shuts down the XBARB module.
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*
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* This function disables XBARB clock.
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*
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* param base XBARB peripheral address.
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*/
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void XBARB_Deinit(XBARB_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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/* Disable XBARB module clock. */
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CLOCK_DisableClock(s_xbarbClock[XBARB_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 Configures a connection between the selected XBARB_IN[*] input and the XBARB_OUT[*] output signal.
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*
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* This function configures which XBARB input is connected to the selected XBARB output.
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* If more than one XBARB module is available, only the inputs and outputs from the same module
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* can be connected.
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*
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* param base XBARB peripheral address.
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* param input XBARB input signal.
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* param output XBARB output signal.
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*/
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void XBARB_SetSignalsConnection(XBARB_Type *base, xbar_input_signal_t input, xbar_output_signal_t output)
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{
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xbarb_u8_u16_t regVal;
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uint8_t byteInReg;
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uint8_t outputIndex = (uint8_t)output;
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byteInReg = outputIndex % 2U;
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regVal._u16 = XBARB_SELx(base, outputIndex);
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regVal._u8[byteInReg] = (uint8_t)input;
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XBARB_SELx(base, outputIndex) = regVal._u16;
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}
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