hal_ti/simplelink/source/ti/devices/cc13x2_cc26x2/driverlib/vims.c

177 lines
6.0 KiB
C

/******************************************************************************
* Filename: vims.c
* Revised: 2020-02-14 11:30:20 +0100 (Fri, 14 Feb 2020)
* Revision: 56760
*
* Description: Driver for the VIMS.
*
* Copyright (c) 2015 - 2017, 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
* 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.
*
******************************************************************************/
#include "vims.h"
//*****************************************************************************
//
// Handle support for DriverLib in ROM:
// This section will undo prototype renaming made in the header file
//
//*****************************************************************************
#if !defined(DOXYGEN)
#undef VIMSConfigure
#define VIMSConfigure NOROM_VIMSConfigure
#undef VIMSModeSet
#define VIMSModeSet NOROM_VIMSModeSet
#undef VIMSModeGet
#define VIMSModeGet NOROM_VIMSModeGet
#undef VIMSModeSafeSet
#define VIMSModeSafeSet NOROM_VIMSModeSafeSet
#endif
//*****************************************************************************
//
// Configures the VIMS.
//
//*****************************************************************************
void
VIMSConfigure(uint32_t ui32Base, bool bRoundRobin, bool bPrefetch)
{
uint32_t ui32Reg;
// Check the arguments.
ASSERT(VIMSBaseValid(ui32Base));
ui32Reg = HWREG(ui32Base + VIMS_O_CTL);
ui32Reg &= ~(VIMS_CTL_PREF_EN | VIMS_CTL_ARB_CFG);
if(bRoundRobin)
{
ui32Reg |= VIMS_CTL_ARB_CFG;
}
if(bPrefetch)
{
ui32Reg |= VIMS_CTL_PREF_EN;
}
// Set the Arbitration and prefetch mode.
HWREG(ui32Base + VIMS_O_CTL) = ui32Reg;
}
//*****************************************************************************
//
// Set the operational mode of the VIMS
//
//*****************************************************************************
void
VIMSModeSet(uint32_t ui32Base, uint32_t ui32Mode)
{
uint32_t ui32Reg;
// Check the arguments.
ASSERT(VIMSBaseValid(ui32Base));
ASSERT((ui32Mode == VIMS_MODE_DISABLED) ||
(ui32Mode == VIMS_MODE_ENABLED) ||
(ui32Mode == VIMS_MODE_OFF));
// Set the mode.
ui32Reg = HWREG(ui32Base + VIMS_O_CTL);
ui32Reg &= ~VIMS_CTL_MODE_M;
ui32Reg |= (ui32Mode & VIMS_CTL_MODE_M);
HWREG(ui32Base + VIMS_O_CTL) = ui32Reg;
}
//*****************************************************************************
//
// Get the current operational mode of the VIMS.
//
//*****************************************************************************
uint32_t
VIMSModeGet(uint32_t ui32Base)
{
uint32_t ui32Reg;
// Check the arguments.
ASSERT(VIMSBaseValid(ui32Base));
ui32Reg = HWREG(ui32Base + VIMS_O_STAT);
if(ui32Reg & VIMS_STAT_MODE_CHANGING)
{
return (VIMS_MODE_CHANGING);
}
else
{
return (ui32Reg & VIMS_STAT_MODE_M);
}
}
//*****************************************************************************
//
// Safe setting of new VIMS mode
// - Function might be blocking
// - Can be called for any mode change (also if actually not changing mode)
//
//*****************************************************************************
void
VIMSModeSafeSet( uint32_t ui32Base, uint32_t ui32NewMode, bool blocking )
{
uint32_t currentMode;
// Check the arguments.
ASSERT(VIMSBaseValid(ui32Base));
ASSERT((ui32NewMode == VIMS_MODE_DISABLED) ||
(ui32NewMode == VIMS_MODE_ENABLED) ||
(ui32NewMode == VIMS_MODE_OFF));
// Make sure that only the mode bits are set in the input parameter
// (done just for security since it is critical to the code flow)
ui32NewMode &= VIMS_CTL_MODE_M;
// Wait for any pending change to complete and get current VIMS mode
// (This is a blocking point but will typically only be a blocking point
// only if mode is changed multiple times with blocking=0)
do {
currentMode = VIMSModeGet( ui32Base );
} while ( currentMode == VIMS_MODE_CHANGING );
// First check that it actually is a mode change request
if ( ui32NewMode != currentMode ) {
// Set new mode
VIMSModeSet( ui32Base, ui32NewMode );
// Wait for final mode change to complete - if blocking is requested
if ( blocking ) {
while ( HWREGBITW( VIMS_BASE + VIMS_O_STAT, VIMS_STAT_MODE_CHANGING_BITN )) {
// Do nothing - wait for change to complete.
}
}
}
}