/* ----------------------------------------------------------------------------
 *         ATMEL Microcontroller Software Support
 * ----------------------------------------------------------------------------
 * Copyright (c) 2010, Atmel Corporation
 *
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 * - Redistributions of source code must retain the above copyright notice,
 * this list of conditions and the disclaimer below.
 *
 * Atmel's name may not be used to endorse or promote products derived from
 * this software without specific prior written permission.
 *
 * DISCLAIMER: THIS SOFTWARE IS PROVIDED BY ATMEL "AS IS" AND ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT ARE
 * DISCLAIMED. IN NO EVENT SHALL ATMEL 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.
 * ----------------------------------------------------------------------------
 */

/*----------------------------------------------------------------------------
 *        Headers
 *----------------------------------------------------------------------------*/

#include "chip.h"

#include <assert.h>

/*----------------------------------------------------------------------------
 *        Exported functions
 *----------------------------------------------------------------------------*/

/**
 * \brief Enables the clock of a peripheral. The peripheral ID is used
 * to identify which peripheral is targetted.
 *
 * \note The ID must NOT be shifted (i.e. 1 << ID_xxx).
 *
 * \param id  Peripheral ID (ID_xxx).
 */
extern void PMC_EnablePeripheral( uint32_t dwId )
{
    assert( dwId < 32 ) ;

    if ( (PMC->PMC_PCSR & ((uint32_t)1 << dwId)) == ((uint32_t)1 << dwId) )
    {
        TRACE_DEBUG( "PMC_EnablePeripheral: clock of peripheral"  " %lu is already enabled\n\r", dwId ) ;
    }
    else
    {
        PMC->PMC_PCER = 1 << dwId ;
    }
}

/**
 * \brief Disables the clock of a peripheral. The peripheral ID is used
 * to identify which peripheral is targetted.
 *
 * \note The ID must NOT be shifted (i.e. 1 << ID_xxx).
 *
 * \param id  Peripheral ID (ID_xxx).
 */
extern void PMC_DisablePeripheral( uint32_t dwId )
{
    assert( dwId < 32 ) ;

    if ( (PMC->PMC_PCSR & ((uint32_t)1 << dwId)) != ((uint32_t)1 << dwId) )
    {
        TRACE_DEBUG("PMC_DisablePeripheral: clock of peripheral" " %lu is not enabled\n\r", dwId ) ;
    }
    else
    {
        PMC->PMC_PCDR = 1 << dwId ;
    }
}

/**
 * \brief Enable all the periph clock via PMC.
 */
extern void PMC_EnableAllPeripherals( void )
{
    PMC->PMC_PCER = 0xFFFFFFFF ;
    while ( (PMC->PMC_PCSR & 0xFFFFFFFF) != 0xFFFFFFFF ) ;

    TRACE_DEBUG( "Enable all periph clocks\n\r" ) ;
}

/**
 * \brief Disable all the periph clock via PMC.
 */
extern void PMC_DisableAllPeripherals( void )
{
    PMC->PMC_PCDR = 0xFFFFFFFF ;
    while ( (PMC->PMC_PCSR & 0xFFFFFFFF) != 0 ) ;


    TRACE_DEBUG( "Disable all periph clocks\n\r" ) ;
}

/**
 * \brief Get Periph Status for the given peripheral ID.
 *
 * \param id  Peripheral ID (ID_xxx).
 */
extern uint32_t PMC_IsPeriphEnabled( uint32_t dwId )
{
    assert( dwId < 32 ) ;

    return ( PMC->PMC_PCSR & (1 << dwId) ) ;
    
}
