106 lines
3.2 KiB
C
106 lines
3.2 KiB
C
/****************************************************************************
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* boards/arm/sama5/sama5d3x-ek/src/sam_touchscreen.c
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership. The
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* ASF licenses this file to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance with the
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* License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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*
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****************************************************************************/
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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 <sys/types.h>
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#include <assert.h>
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#include <errno.h>
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#include <debug.h>
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#include "sam_adc.h"
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#include "sam_tsd.h"
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#include "sama5d3x-ek.h"
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#include <nuttx/board.h>
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#ifdef 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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#ifndef CONFIG_INPUT
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# error "Touchscreen support requires CONFIG_INPUT"
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#endif
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#ifndef CONFIG_SAMA5D3XEK_TSD_DEVMINOR
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# define CONFIG_SAMA5D3XEK_TSD_DEVMINOR 0
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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_tsc_setup
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*
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* Description:
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* This function is called by board-bringup logic to configure the
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* touchscreen device. This function 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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* 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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int sam_tsc_setup(int minor)
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{
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struct sam_adc_s *adc;
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int ret;
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iinfo("minor:%d\n", minor);
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DEBUGASSERT(minor == 0);
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/* Initialize the ADC driver */
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adc = (struct sam_adc_s *)sam_adc_initialize();
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if (!adc)
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{
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ierr("ERROR: Failed to initialize the ADC driver\n");
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return -ENODEV;
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}
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/* Initialize and register the SPI touchscreen device */
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ret = sam_tsd_register(adc, CONFIG_SAMA5D3XEK_TSD_DEVMINOR);
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if (ret < 0)
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{
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ierr("ERROR: Failed to register touchscreen device /dev/input%d: %d\n",
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CONFIG_SAMA5D3XEK_TSD_DEVMINOR, ret);
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return -ENODEV;
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}
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return OK;
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}
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#endif /* CONFIG_INPUT_ADS7843E */
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