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
|
#include <assert.h>
#include <errno.h>
#include <fcntl.h>
#include <stdint.h>
#include <stdio.h>
#include <string.h>
#include <sysexits.h>
#include <unistd.h>
#include <sys/stat.h>
#include "compatible_devices.h"
#include "exynos4412_gpios.h"
#include "exynos4412_gpios_data.h"
#include "modem_gpios_data.h"
#include "tests.h"
int usage(char* progname)
{
printf("Usage: %s <flash|gpl1|gpl2|modem|test>\n", progname);
printf("\n");
printf("Available commands:\n");
printf("\tflash: dump flash GPIO (gpj1 1) status\n");
printf("\tgpl1: dump GPL1 GPIOs status"
" (for tests on gpio127 and gpio128)\n");
printf("\tgpl2: dump GPL2 GPIOs status"
" (for tests on gpio127 and gpio128)\n");
printf("\tgpy0: dump GPY0 GPIOs status"
" (for tests on gpio127 and gpio128)\n");
printf("\tmodem: dump the modem GPIOs status\n");
printf("\ttest: run self tests\n");
return 0;
}
int dump_flash_gpio_status(int debug, char* devmem, int fd, size_t page_size)
{
int rc;
rc = dump_gpio_infos(devmem, fd, page_size, "gpj1", 1);
if (rc == -1) {
printf("dump_gpio_infos failed with error %d\n", rc);
/* TODO: return more precise error */
return EX_UNAVAILABLE;
}
return 0;
}
int dump_gpio_bank_status(int debug, char* devmem, int fd, size_t page_size,
char* bank)
{
int i;
int nr_gpios;
int rc;
nr_gpios = get_bank_gpio_numbers(debug, bank);
if (nr_gpios == -1) {
/* The get_bank_gpio_numbers function
* already prints some error
*/
/* TODO: return more precise error */
return EX_UNAVAILABLE;
}
for (i=0; i < nr_gpios; i++) {
rc = dump_gpio_infos(devmem, fd, page_size, bank, i);
if (rc == -1) {
printf("dump_gpio_infos failed with error %d\n", rc);
/* TODO: return more precise error */
return EX_UNAVAILABLE;
}
}
return 0;
}
int main(int argc, char *argv[])
{
int fd = 0;
int rc = 0;
int debug = 0;
char *devmem = "/dev/mem";
size_t page_size = 4096;
assert(argc >= 1);
if (argc != 2) {
usage(argv[0]);
return EX_USAGE;
}
if (!device_is_compatible(debug)) {
printf("Exiting due to incompatible device\n");
return 0;
}
/*
* TODO: check if root or tell the user to become root in case or
* access error
*/
fd = open(devmem, O_RDWR | O_SYNC);
if (fd == -1) {
rc = errno;
printf("Opening %s failed with error %d: %s\n",
devmem, rc, strerror(rc));
/* TODO: return more precise error */
return EX_UNAVAILABLE;
}
if (argc == 2 && !strcmp("test", argv[1])) {
return run_tests(debug, devmem, fd, page_size);
} else if (argc == 2 && !strcmp("flash", argv[1])) {
return dump_flash_gpio_status(debug, devmem, fd, page_size);
} else if (argc == 2 && !strcmp("gpl1", argv[1])) {
return dump_gpio_bank_status(debug, devmem, fd, page_size,
"gpl1");
} else if (argc == 2 && !strcmp("gpl2", argv[1])) {
return dump_gpio_bank_status(debug, devmem, fd, page_size,
"gpl2");
} else if (argc == 2 && !strcmp("gpy0", argv[1])) {
return dump_gpio_bank_status(debug, devmem, fd, page_size,
"gpy0");
} else if (argc == 2 && !strcmp("modem", argv[1])) {
return dump_modem_gpio_infos(debug, devmem, fd, page_size);
} else {
usage(argv[0]);
return EX_USAGE;
}
rc = close(fd);
if (rc == -1) {
rc = errno;
printf("Closing %s failed with error %d: %s\n",
devmem, rc, strerror(rc));
/* TODO: return more precise error */
return EX_UNAVAILABLE;
}
return 0;
}
|
