139 lines
5.2 KiB
C
139 lines
5.2 KiB
C
/****************************************************************************
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* arch/arm/src/sama5/sam_tsd.h
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*
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* Copyright (C) 2013 Gregory Nutt. All rights reserved.
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* Author: Gregory Nutt <gnutt@nuttx.org>
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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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* 1. 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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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* 3. Neither the name NuttX nor the names of its contributors may be
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* used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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****************************************************************************/
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#ifndef __ARCH_ARM_SRC_SAMA5_SAM_TSD_H
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#define __ARCH_ARM_SRC_SAMA5_SAM_TSD_H
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <nuttx/config.h>
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#include "chip/sam_adc.h"
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#if defined(CONFIG_SAMA5_ADC) && defined(CONFIG_SAMA5_TSD)
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/****************************************************************************
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* Pre-processor Definitions
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****************************************************************************/
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/* Configuration ************************************************************/
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#ifdef CONFIG_SAMA_TSD_RXP
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# define CONFIG_SAMA_TSD_RXP 6
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#endif
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/* Touchscreen interrupt event sets
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*
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* ADC_INT_XRDY TSD Measure XPOS Ready Interrupt
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* ADC_INT_YRDY TSD Measure YPOS Ready Interrupt
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* ADC_INT_PRDY TSD Measure Pressure Ready Interrupt
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* ADC_INT_PEN Pen Contact Interrupt
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* ADC_INT_NOPEN No Pen Contact Interrupt
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* ADC_SR_PENS Pen detect Status (Not an interrupt)
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*/
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#define ADC_TSD_CMNINTS (ADC_INT_XRDY | ADC_INT_YRDY | ADC_INT_PRDY | ADC_INT_NOPEN)
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#define ADC_TSD_ALLINTS (ADC_TSD_CMNINTS | ADC_INT_PEN)
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#define ADC_TSD_ALLSTATUS (ADC_TSD_ALLINTS | ADC_SR_PENS)
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#define ADC_TSD_RELEASEINTS ADC_TSD_CMNINTS
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/****************************************************************************
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* Public Types
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****************************************************************************/
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/****************************************************************************
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* Public Data
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****************************************************************************/
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#undef EXTERN
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#if defined(__cplusplus)
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#define EXTERN extern "C"
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extern "C"
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{
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#else
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#define EXTERN extern
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#endif
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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/****************************************************************************
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* Name: sam_tsd_register
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*
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* Description:
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* Configure the SAMA5 touchscreen. This will register the driver as
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* /dev/inputN where N is the minor device number
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*
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* Input Parameters:
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* dev - The ADC device handle received from sam_adc_initialize()
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* minor - The input device minor number
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*
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* Returned Value:
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* Zero is returned on success. Otherwise, a negated errno value is
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* returned to indicate the nature of the failure.
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*
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****************************************************************************/
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struct sam_adc_s;
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int sam_tsd_register(FAR struct sam_adc_s *adc, int minor);
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/****************************************************************************
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* Interfaces exported from the touchscreen to the ADC driver
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****************************************************************************/
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/****************************************************************************
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* Name: sam_tsd_interrupt
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*
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* Description:
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* Handles ADC interrupts associated with touchscreen channels
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*
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* Input parmeters:
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* pending - Current set of pending interrupts being handled
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*
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* Returned Value:
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* None
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*
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****************************************************************************/
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void sam_tsd_interrupt(uint32_t pending);
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#undef EXTERN
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#ifdef __cplusplus
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}
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#endif
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#endif /* CONFIG_SAMA5_ADC && CONFIG_SAMA5_TSD */
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#endif /* __ARCH_ARM_SRC_SAMA5_SAM_TSD_H */
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