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/****************************************************************************
* arch/arm/src/tiva/tiva_adc.h
*
* Copyright (C) 2015 TRD2 Inc. All rights reserved.
* Author: Calvin Maguranis <calvin.maguranis@trd2inc.com>
*
* 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.
*
****************************************************************************/
#ifndef __ARCH_ARM_SRC_TIVA_TIVA_ADC_H
#define __ARCH_ARM_SRC_TIVA_TIVA_ADC_H
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/config.h>
#include <nuttx/analog/adc.h>
#include <nuttx/fs/ioctl.h>
#include "chip.h"
#include "chip/tiva_adc.h"
#ifdef CONFIG_TIVA_ADC
/****************************************************************************
* Pre-processor Definitions
****************************************************************************/
#define TIVA_ADC_PWM_TRIG_IOCTL _ANIOC(0x00F0)
/* PWM trigger ioctl support ***********************************************/
#define TIVA_ADC_PWM_TRIG(sse, pwm, mod) ((((mod) << 4) << ((pwm) * 8)) + (sse))
/****************************************************************************
* Public Functions
****************************************************************************/
#ifndef __ASSEMBLY__
# ifdef __cplusplus
# define EXTERN extern "C"
extern "C"
{
# else
# define EXTERN extern
#endif
/****************************************************************************
* Name: tiva_adc_initialize
*
* Description:
* Initialize the ADC
*
* Returned Value:
* Valid can device structure reference on succcess; a NULL on failure
*
****************************************************************************/
FAR struct adc_dev_s *tiva_adc_initialize(int adc_num);
/****************************************************************************
* Interfaces exported from the ADC driver
****************************************************************************/
struct tiva_adc_s;
/****************************************************************************
* Name: tiva_adc_lock
*
* Description:
* Get exclusive access to the ADC interface
*
****************************************************************************/
void tiva_adc_lock(FAR struct tiva_adc_s *priv, int sse);
/****************************************************************************
* Name: tiva_adc_unlock
*
* Description:
* Relinquish the lock on the ADC interface
*
****************************************************************************/
void tiva_adc_unlock(FAR struct tiva_adc_s *priv, int sse);
/****************************************************************************
* Name: tiva_adc_getreg
*
* Description:
* Read any 32-bit register using an absolute address.
*
****************************************************************************/
#ifdef CONFIG_TIVA_ADC_REGDEBUG
uint32_t tiva_adc_getreg(FAR struct tiva_adc_s *priv, uintptr_t address);
#else
# define tiva_adc_getreg(handle,addr) getreg32(addr)
#endif
/****************************************************************************
* Name: tiva_adc_putreg
*
* Description:
* Write to any 32-bit register using an absolute address.
*
****************************************************************************/
#ifdef CONFIG_TIVA_ADC_REGDEBUG
void tiva_adc_putreg(FAR struct tiva_adc_s *priv, uintptr_t address,
uint32_t regval);
#else
# define tiva_adc_putreg(handle,addr,val) putreg32(val,addr)
#endif
# undef EXTERN
# ifdef __cplusplus
}
# endif
#endif /* __ASSEMBLY__ */
#endif /* CONFIG_TIVA_ADC */
#endif /* __ARCH_ARM_SRC_TIVA_TIVA_ADC_H */
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