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/****************************************************************************
* arch/arm/src/sama5/sam_tsd.h
*
* Copyright (C) 2013 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.
*
****************************************************************************/
#ifndef __ARCH_ARM_SRC_SAMA5_SAM_TSD_H
#define __ARCH_ARM_SRC_SAMA5_SAM_TSD_H
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/config.h>
#include "chip/sam_adc.h"
#if defined(CONFIG_SAMA5_ADC) && defined(CONFIG_SAMA5_TSD)
/****************************************************************************
* Pre-processor Definitions
****************************************************************************/
/* Configuration ************************************************************/
#ifdef CONFIG_SAMA_TSD_RXP
# define CONFIG_SAMA_TSD_RXP 6
#endif
/* Touchscreen interrupt event sets
*
* ADC_INT_XRDY TSD Measure XPOS Ready Interrupt
* ADC_INT_YRDY TSD Measure YPOS Ready Interrupt
* ADC_INT_PRDY TSD Measure Pressure Ready Interrupt
* ADC_INT_PEN Pen Contact Interrupt
* ADC_INT_NOPEN No Pen Contact Interrupt
* ADC_SR_PENS Pen detect Status (Not an interrupt)
*/
#define ADC_TSD_CMNINTS (ADC_INT_XRDY | ADC_INT_YRDY | ADC_INT_PRDY | ADC_INT_NOPEN)
#define ADC_TSD_ALLINTS (ADC_TSD_CMNINTS | ADC_INT_PEN)
#define ADC_TSD_ALLSTATUS (ADC_TSD_ALLINTS | ADC_SR_PENS)
#define ADC_TSD_RELEASEINTS ADC_TSD_CMNINTS
/****************************************************************************
* Public Types
****************************************************************************/
/****************************************************************************
* Public Data
****************************************************************************/
#undef EXTERN
#if defined(__cplusplus)
#define EXTERN extern "C"
extern "C"
{
#else
#define EXTERN extern
#endif
/****************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
* Name: sam_tsd_register
*
* Description:
* Configure the SAMA5 touchscreen. This will register the driver as
* /dev/inputN where N is the minor device number
*
* Input Parameters:
* dev - The ADC device handle received from sam_adc_initialize()
* minor - The input device minor number
*
* Returned Value:
* Zero is returned on success. Otherwise, a negated errno value is
* returned to indicate the nature of the failure.
*
****************************************************************************/
struct sam_adc_s;
int sam_tsd_register(FAR struct sam_adc_s *adc, int minor);
/****************************************************************************
* Interfaces exported from the touchscreen to the ADC driver
****************************************************************************/
/****************************************************************************
* Name: sam_tsd_interrupt
*
* Description:
* Handles ADC interrupts associated with touchscreen channels
*
* Input parmeters:
* pending - Current set of pending interrupts being handled
*
* Returned Value:
* None
*
****************************************************************************/
void sam_tsd_interrupt(uint32_t pending);
#undef EXTERN
#ifdef __cplusplus
}
#endif
#endif /* CONFIG_SAMA5_ADC && CONFIG_SAMA5_TSD */
#endif /* __ARCH_ARM_SRC_SAMA5_SAM_TSD_H */
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