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
|
#ifdef __powerpc__
#include <sys/types.h>
#include <sys/mman.h>
#include <netinet/in.h>
#include <stdlib.h>
#include <string.h>
#include <stdio.h>
#include <assert.h>
#include <limits.h>
#include <ctype.h>
#include <fcntl.h>
#include <sys/ioctl.h>
#include <linux/fb.h>
#include "vbe.h"
#include "minifind.h"
/* misnomer */
int vbe_get_vbe_info(struct vbe_info *ret)
{
struct fb_fix_screeninfo fix;
unsigned char *mem;
int rc = 0;
int fd = -1;
int i;
if (ret == NULL)
return 0;
if (!rc && !(fd = open("/dev/fb0", O_RDONLY)))
{
rc = 1;
fprintf(stderr, "Unable to open /dev/fb0. Exiting.\n");
}
if ((!rc) && (ioctl(fd, FBIOGET_FSCREENINFO, &fix)))
{
rc = 1;
fprintf(stderr, "Framebuffer ioctl failed. Exiting.\n");
}
if (fd > 0)
close(fd);
if (!rc)
{
// Note: if OFfb, vram info is unreliable!
if (strcmp(fix.id, "OFfb"))
{
mem = strdup(fix.id);
while(((i = strlen(mem)) > 0) && isspace(mem[i - 1])) {
mem[i - 1] = '\0';
}
ret->oem_name = strdup(mem);
ret->product_name = NULL;
ret->vendor_name = NULL;
ret->product_revision = NULL;
ret->memory_size = fix.smem_len;
}
}
return !rc;
}
int get_edid_supported()
{
int ret = 0;
struct findNode *list;
struct pathNode *n;
list = (struct findNode *) malloc(sizeof(struct findNode));
list->result = (struct pathNode *) malloc(sizeof(struct pathNode));
list->result->path = NULL;
list->result->next = list->result;
minifind("/proc/device-tree", "EDID", list);
/* Supported */
for (n = list->result->next; n != list->result; n = n->next)
ret = 1;
/* Clean up and return. */
return ret;
}
/* Get EDID info. */
int vbe_get_edid_info(struct vbe_edid1_info * ret)
{
unsigned char *mem;
struct pathNode *n;
struct findNode *list;
u_int16_t man;
unsigned char edid[0x80];
FILE* edid_file = NULL;
char *path = NULL;
if (ret == NULL)
return 0;
list = (struct findNode *) malloc(sizeof(struct findNode));
list->result = (struct pathNode *) malloc(sizeof(struct pathNode));
list->result->path = NULL;
list->result->next = list->result;
minifind("/proc/device-tree", "EDID", list);
for (n = list->result->next; n != list->result; n = n->next)
{
path = n->path;
break;
}
if (path)
edid_file = fopen(path, "rb" );
if (!edid_file)
return 0;
if (fread(edid, sizeof(unsigned char), 0x80, edid_file) != 0x80)
return 0;
fclose(edid_file);
mem = malloc(sizeof(struct vbe_edid1_info));
if(mem == NULL) {
return 0;
}
memcpy(mem, edid, 0x80);
/* Copy the buffer for return. */
memcpy(ret, mem, sizeof(struct vbe_edid1_info));
memcpy(&man, &ret->manufacturer_name, 2);
man = ntohs(man);
memcpy(&ret->manufacturer_name, &man, 2);
/* byteswap to match the contents of MonitorsDB */
ret->product_code = ((ret->product_code >> 8) & 0xff) | ((ret->product_code & 0xff) << 8);
free(mem);
return 1;
}
#endif /* __powerpc__ */
|
