71 lines
2.7 KiB
C
71 lines
2.7 KiB
C
/*
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* Copyright (c) 2020, Texas Instruments Incorporated
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* * Neither the name of Texas Instruments Incorporated nor the names of
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* its contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
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* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
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* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
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* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
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* EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <ti/driverlib/dl_trng.h>
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#ifdef __MSPM0_HAS_TRNG__
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bool DL_TRNG_saveConfiguration(
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const TRNG_Regs *trng, DL_TRNG_backupConfig *ptr)
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{
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bool stateSaved = !ptr->backupRdy;
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if (stateSaved) {
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ptr->controlWord = trng->CTL;
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ptr->clockDivider = trng->CLKDIVIDE;
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ptr->interruptMask = trng->CPU_INT.IMASK;
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ptr->backupRdy = true;
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}
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return stateSaved;
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}
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bool DL_TRNG_restoreConfiguration(TRNG_Regs *trng, DL_TRNG_backupConfig *ptr)
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{
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bool stateRestored = ptr->backupRdy;
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if (stateRestored) {
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DL_Common_updateReg(
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&trng->CTL, ptr->controlWord, TRNG_CTL_DECIM_RATE_MASK);
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trng->CLKDIVIDE = ptr->clockDivider;
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trng->CPU_INT.IMASK = ptr->interruptMask;
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/* If TRNG was originally in OFF state, then send PWROFF command */
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if (((ptr->controlWord & TRNG_STAT_FSM_STATE_MASK) >>
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TRNG_STAT_FSM_STATE_OFS) == (uint32_t) DL_TRNG_STATE_OFF) {
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DL_TRNG_sendCommand(trng, DL_TRNG_CMD_PWROFF);
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}
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ptr->backupRdy = false;
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}
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return stateRestored;
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}
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#endif /* __MSPM0_HAS_TRNG__ */
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