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/****************************************************************************
* arch/arm/src/sam34/sam4cm_supc.c
*
* Copyright (C) 2014 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <gnutt@nuttx.org>
*
* 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 NuttX 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; 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.
*
****************************************************************************/
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/config.h>
#include <stdint.h>
#include <time.h>
#include <errno.h>
#include <debug.h>
#include <nuttx/arch.h>
#include <arch/board/board.h>
#include "up_internal.h"
#include "up_arch.h"
#include "chip.h"
#include "chip/sam_supc.h"
#include "sam4cm_supc.h"
/****************************************************************************
* Definitions
****************************************************************************/
/****************************************************************************
* Private Types
****************************************************************************/
/****************************************************************************
* Private Data
****************************************************************************/
/****************************************************************************
* Global Functions
****************************************************************************/
uint32_t supc_get_slcd_power_mode(void)
{
return getreg32(SAM_SUPC_MR) & SUPC_MR_LCDMODE_MASK;
}
void supc_set_slcd_power_mode(uint32_t mode)
{
uint32_t regval = getreg32(SAM_SUPC_MR);
regval &= ~SUPC_MR_LCDMODE_MASK;
regval |= SUPC_MR_KEY | mode;
putreg32(regval, SAM_SUPC_MR);
if (mode == SUPC_MR_LCDMODE_LCDOFF)
{
while(getreg32(SAM_SUPC_SR) & SUPC_SR_LCDS);
}
else
{
while(!(getreg32(SAM_SUPC_SR) & SUPC_SR_LCDS));
}
}
void supc_set_slcd_ldo_output(uint32_t vrout)
{
uint32_t regval = getreg32(SAM_SUPC_MR);
regval &= ~SUPC_MR_LCDVROUT_MASK;
regval |= SUPC_MR_KEY | vrout;
putreg32(regval, SAM_SUPC_MR);
}
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