/*  ============================================================================
 *   Copyright (c) Texas Instruments Incorporated 2002, 2003, 2004, 2005, 2008, 2016                
 * 
 *  Redistribution and use in source and binary forms, with or without 
 *  modification, are permitted provided that the following conditions 
 *  are met:
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 *    Redistributions of source code must retain the above copyright 
 *    notice, this list of conditions and the following disclaimer.
 *
 *    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.
 *
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 *    its contributors may be used to endorse or promote products derived
 *    from this software without specific prior written permission.
 *
 *  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 
 *  "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 
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*/

/**
 *  @file  csl_intcClose.c
 *
 *  @brief   File for functional layer of CSL API CSL_intcClose()
 *
 *  PATH  $(CSLPATH)\src\intc
 */
 
/* =============================================================================
 *  Revision History
 *  ===============
 *  12-Jun-2004 Ruchika Kharwar File Created
 *
 *  16-Mar-2005 brn modified for doxygen documentation
 *  19-Nov-2008 Updated for Doxygen
 * =============================================================================
 */
 
#include <ti/csl/src/intc/csl_intc.h>
#include <ti/csl/src/intc/_csl_intc.h>
#include <ti/csl/src/intc/csl_intcAux.h>
#include <ti/csl/src/intc/csl_intcAsmUtils.h>

#if defined(_TMS320C6X)
CSL_SET_CSECT (CSL_intcClose, ".text:csl_section:intc")
#endif

CSL_Status  CSL_intcClose (
    CSL_IntcHandle      hIntc
)
{
    
    CSL_Status  closeStatus = (CSL_Status)CSL_ESYS_BADHANDLE;
    Uint32      evt;
    Uint32      x;
    Uint32      y;
    
    if (hIntc != (CSL_IntcHandle) CSL_INTC_BADHANDLE) {
        evt = (Uint32)(hIntc->eventId);
        y = evt >> 5;
        x = ((uint32_t)1U) << (evt & 0x1fU);
        
        CSL_dint();
        CSL_intcAllocMask[y] &= ~x; /* clear bit -> unused */
        if (CSL_intcEventOffsetMap[hIntc->eventId] != CSL_INTC_MAPPED_NONE) {
            CSL_intcEventHandlerRecord_p
            [CSL_intcEventOffsetMap[hIntc->eventId]].handler = 
                                                       CSL_INTC_EVTHANDLER_NONE;
            CSL_intcEventOffsetMap[hIntc->eventId] = (Int8)CSL_INTC_MAPPED_NONE;
        }   
        hIntc = (CSL_IntcHandle) CSL_INTC_BADHANDLE;
        CSL_rint();
        
        closeStatus = CSL_SOK;      
    }
    
    return closeStatus;
}
