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 * Copyright (c) 2022, Texas Instruments Incorporated
 * All rights reserved.
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 * modification, are permitted provided that the following conditions
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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.
 *
 * *  Neither the name of Texas Instruments Incorporated 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 OWNER OR
 * CONTRIBUTORS 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;
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 * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

#include <ti/driverlib/dl_opa.h>

#ifdef __MSPM0_HAS_OA__

DL_OPA_GAIN DL_OPA_increaseGain(OA_Regs *opa)
{
    DL_OPA_GAIN currentGain = DL_OPA_getGain(opa);

    /* if CFG.GAIN 0x5 do nothing */
    if (currentGain == DL_OPA_GAIN_N31_P32) {
        return DL_OPA_GAIN_N31_P32;
    } else {
        DL_OPA_setGain(opa,
            (uint32_t)(currentGain + (((uint32_t) 0x1) << OA_CFG_GAIN_OFS)));
        return DL_OPA_getGain(opa);
    }
}

DL_OPA_GAIN DL_OPA_decreaseGain(OA_Regs *opa)
{
    DL_OPA_GAIN currentGain = DL_OPA_getGain(opa);

    /* if CFG.GAIN is 0x1 do nothing */
    if (currentGain == DL_OPA_GAIN_N1_P2) {
        return DL_OPA_GAIN_N1_P2;
    } else {
        DL_OPA_setGain(opa,
            (uint32_t)(currentGain - (((uint32_t) 0x1) << OA_CFG_GAIN_OFS)));
        return DL_OPA_getGain(opa);
    }
}

#endif /* __MSPM0_HAS_OA__ */