aon_ioc.c

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/******************************************************************************
*  Filename:       aon_ioc.c
*  Revised:        2015-01-13 16:59:55 +0100 (Tue, 13 Jan 2015)
*  Revision:       42365
*
*  Description:    Driver for the AON IO Controller
*
*  Copyright (c) 2015, Texas Instruments Incorporated
*  All rights reserved.
*
*  Redistribution and use in source and binary forms, with or without
*  modification, are permitted provided that the following conditions are met:
*
*  1) Redistributions of source code must retain the above copyright notice,
*     this list of conditions and the following disclaimer.
*
*  2) 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.
*
*  3) Neither the name of the ORGANIZATION nor the names of 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 LIMITED TO, THE
*  IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
*  ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
*  LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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*  ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
*  POSSIBILITY OF SUCH DAMAGE.
*
******************************************************************************/

#include <driverlib/aon_ioc.h>

//*****************************************************************************
//
// Handle support for DriverLib in ROM:
// This section will undo prototype renaming made in the header file
//
//*****************************************************************************
#if !defined(DOXYGEN)
    #undef  AONIOCDriveStrengthSet
    #define AONIOCDriveStrengthSet          NOROM_AONIOCDriveStrengthSet
    #undef  AONIOCDriveStrengthGet
    #define AONIOCDriveStrengthGet          NOROM_AONIOCDriveStrengthGet
#endif

//*****************************************************************************
//
//
//*****************************************************************************
void
AONIOCDriveStrengthSet(uint32_t ui32LowDrvStr, uint32_t ui32MedDrvStr,
                       uint32_t ui32MaxDrvStr)
{
    ASSERT((ui32LowDrvStr == AONIOC_DRV_STR5_7_14) ||
           (ui32LowDrvStr == AONIOC_DRV_STR5_10_20) ||
           (ui32LowDrvStr == AONIOC_DRV_STR7_14_28) ||
           (ui32LowDrvStr == AONIOC_DRV_STR10_20_40) ||
           (ui32LowDrvStr == AONIOC_DRV_STR14_28_56) ||
           (ui32LowDrvStr == AONIOC_DRV_STR20_40_80) ||
           (ui32LowDrvStr == AONIOC_DRV_STR28_56_112) ||
           (ui32LowDrvStr == AONIOC_DRV_STR40_80_112));
    ASSERT((ui32MedDrvStr == AONIOC_DRV_STR5_7_14) ||
           (ui32MedDrvStr == AONIOC_DRV_STR5_10_20) ||
           (ui32MedDrvStr == AONIOC_DRV_STR7_14_28) ||
           (ui32MedDrvStr == AONIOC_DRV_STR10_20_40) ||
           (ui32MedDrvStr == AONIOC_DRV_STR14_28_56) ||
           (ui32MedDrvStr == AONIOC_DRV_STR20_40_80) ||
           (ui32MedDrvStr == AONIOC_DRV_STR28_56_112) ||
           (ui32MedDrvStr == AONIOC_DRV_STR40_80_112));
    ASSERT((ui32MaxDrvStr == AONIOC_DRV_STR5_7_14) ||
           (ui32MaxDrvStr == AONIOC_DRV_STR5_10_20) ||
           (ui32MaxDrvStr == AONIOC_DRV_STR7_14_28) ||
           (ui32MaxDrvStr == AONIOC_DRV_STR10_20_40) ||
           (ui32MaxDrvStr == AONIOC_DRV_STR14_28_56) ||
           (ui32MaxDrvStr == AONIOC_DRV_STR20_40_80) ||
           (ui32MaxDrvStr == AONIOC_DRV_STR28_56_112) ||
           (ui32MaxDrvStr == AONIOC_DRV_STR40_80_112));

    //
    // Set the minimum drive strength.
    //
    HWREG(AON_IOC_BASE + AON_IOC_O_IOSTRMIN) = ui32LowDrvStr &
                                               AON_IOC_IOSTRMIN_GRAY_CODE_M;
    //
    // Set the medium drive strength.
    //
    HWREG(AON_IOC_BASE + AON_IOC_O_IOSTRMED) = ui32MedDrvStr &
                                               AON_IOC_IOSTRMED_GRAY_CODE_M;
    //
    // Set the maximum drive strength.
    //
    HWREG(AON_IOC_BASE + AON_IOC_O_IOSTRMAX) = ui32MaxDrvStr &
                                               AON_IOC_IOSTRMAX_GRAY_CODE_M;

}

//*****************************************************************************
//
//
//*****************************************************************************
uint32_t
AONIOCDriveStrengthGet(uint32_t ui32DriveLevel)
{
    uint32_t ui32DrvStr;

    //
    // Check the arguments.
    //
    ASSERT((ui32DriveLevel == AONIOC_MAX_DRIVE) ||
           (ui32DriveLevel == AONIOC_MED_DRIVE) ||
           (ui32DriveLevel == AONIOC_MIN_DRIVE));

    //
    // Get the specified drive strength level.
    //
    if(ui32DriveLevel == AONIOC_MAX_DRIVE)
    {
        ui32DrvStr = HWREG(AON_IOC_BASE + AON_IOC_O_IOSTRMAX);
    }
    else if(ui32DriveLevel == AONIOC_MED_DRIVE)
    {
        ui32DrvStr = HWREG(AON_IOC_BASE + AON_IOC_O_IOSTRMED);
    }
    else
    {
        ui32DrvStr = HWREG(AON_IOC_BASE + AON_IOC_O_IOSTRMIN);
    }

    //
    // Return the drive strength value.
    //
    return(ui32DrvStr);
}