1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
|
/************************************************************************************
* configs/sama5d3x-ek/src/sam_touchscreen.c
*
* 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.
*
************************************************************************************/
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/config.h>
#include <sys/types.h>
#include <errno.h>
#include <debug.h>
#include "sam_adc.h"
#include "sam_tsd.h"
#include "sama5d3x-ek.h"
#include <nuttx/board.h>
#ifdef CONFIG_SAMA5_TSD
/****************************************************************************
* Pre-Processor Definitions
****************************************************************************/
/* Configuration ************************************************************/
#ifndef CONFIG_INPUT
# error "Touchscreen support requires CONFIG_INPUT"
#endif
#ifndef CONFIG_SAMA5D3xEK_TSD_DEVMINOR
# define CONFIG_SAMA5D3xEK_TSD_DEVMINOR 0
#endif
/****************************************************************************
* Private Types
****************************************************************************/
/****************************************************************************
* Private Function Prototypes
****************************************************************************/
/****************************************************************************
* Private Data
****************************************************************************/
/****************************************************************************
* Private Functions
****************************************************************************/
/****************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
* Name: board_tsc_setup
*
* Description:
* Each board that supports a touchscreen device must provide this
* function. This function is called by application-specific, setup logic
* to configure the touchscreen device. This function will register the
* driver as /dev/inputN where N is the minor device number.
*
* Input Parameters:
* 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.
*
****************************************************************************/
int board_tsc_setup(int minor)
{
struct sam_adc_s *adc;
static bool initialized = false;
int ret;
idbg("initialized:%d minor:%d\n", initialized, minor);
DEBUGASSERT(minor == 0);
/* Since there is no uninitialized logic, this initialization can be
* performed only one time.
*/
if (!initialized)
{
/* Initialize the ADC driver */
adc = sam_adc_initialize();
if (!adc)
{
idbg("ERROR: Failed to initialize the ADC driver\n");
return -ENODEV;
}
/* Initialize and register the SPI touchscreen device */
ret = sam_tsd_register(adc, CONFIG_SAMA5D3xEK_TSD_DEVMINOR);
if (ret < 0)
{
idbg("ERROR: Failed to register touchscreen device /dev/input%d: %d\n",
CONFIG_SAMA5D3xEK_TSD_DEVMINOR, ret);
return -ENODEV;
}
initialized = true;
}
return OK;
}
/****************************************************************************
* Name: board_tsc_teardown
*
* Description:
* Each board that supports a touchscreen device must provide this function.
* This function is called by application-specific, setup logic to
* uninitialize the touchscreen device.
*
* Input Parameters:
* None
*
* Returned Value:
* None.
*
****************************************************************************/
void board_tsc_teardown(void)
{
/* No support for un-initializing the touchscreen yet */
}
#endif /* CONFIG_INPUT_ADS7843E */
|
