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
|
/*
* Copyright 2006 Luc Verhaegen.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sub license,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice (including the
* next paragraph) shall be included in all copies or substantial portions
* of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*/
#ifdef HAVE_XORG_CONFIG_H
#include <xorg-config.h>
#endif
#include "xf86.h"
#include "xf86DDC.h"
#include <X11/Xatom.h>
#include "property.h"
#include "propertyst.h"
#include "xf86DDC.h"
#define EDID1_ATOM_NAME "XFree86_DDC_EDID1_RAWDATA"
#define EDID2_ATOM_NAME "XFree86_DDC_EDID2_RAWDATA"
static void
addRootWindowProperties(ScrnInfoPtr pScrn, xf86MonPtr DDC)
{
Atom EDID1Atom=-1, EDID2Atom=-1;
CARD8 *EDID1rawdata = NULL;
CARD8 *EDID2rawdata = NULL;
int i, scrnIndex = pScrn->scrnIndex;
Bool makeEDID1prop = FALSE;
Bool makeEDID2prop = FALSE;
if (DDC->ver.version == 1) {
makeEDID1prop = TRUE;
} else if (DDC->ver.version == 2) {
int checksum1;
int checksum2;
makeEDID2prop = TRUE;
/* Some monitors (eg Panasonic PanaSync4)
* report version==2 because they used EDID v2 spec document,
* although they use EDID v1 data structure :-(
*
* Try using checksum to determine when we have such a monitor.
*/
checksum2 = 0;
for (i = 0; i < 256; i++)
checksum2 += DDC->rawData[i];
if (checksum2 % 256) {
xf86DrvMsg(scrnIndex, X_INFO, "Monitor EDID v2 checksum failed\n");
xf86DrvMsg(scrnIndex, X_INFO,
"XFree86_DDC_EDID2_RAWDATA property may be bad\n");
checksum1 = 0;
for (i = 0; i < 128; i++)
checksum1 += DDC->rawData[i];
if (!(checksum1 % 256)) {
xf86DrvMsg(scrnIndex, X_INFO,
"Monitor EDID v1 checksum passed,\n");
xf86DrvMsg(scrnIndex, X_INFO,
"XFree86_DDC_EDID1_RAWDATA property created\n");
makeEDID1prop = TRUE;
}
}
} else {
xf86DrvMsg(scrnIndex, X_PROBED, "unexpected EDID version %d.%d\n",
DDC->ver.version, DDC->ver.revision);
return;
}
if (makeEDID1prop) {
int size = 128;
if (DDC->flags & EDID_COMPLETE_RAWDATA)
size += DDC->no_sections * 128;
if ((EDID1rawdata = xalloc(size*sizeof(CARD8)))==NULL)
return;
EDID1Atom = MakeAtom(EDID1_ATOM_NAME, sizeof(EDID1_ATOM_NAME) - 1, TRUE);
memcpy(EDID1rawdata, DDC->rawData, size);
xf86RegisterRootWindowProperty(scrnIndex, EDID1Atom, XA_INTEGER, 8,
size, (unsigned char *)EDID1rawdata);
}
if (makeEDID2prop) {
if ((EDID2rawdata = xalloc(256*sizeof(CARD8)))==NULL)
return;
memcpy(EDID2rawdata, DDC->rawData, 256);
EDID2Atom = MakeAtom(EDID2_ATOM_NAME, sizeof(EDID2_ATOM_NAME) - 1, TRUE);
xf86RegisterRootWindowProperty(scrnIndex, EDID2Atom, XA_INTEGER, 8,
256, (unsigned char *)EDID2rawdata);
}
}
_X_EXPORT Bool
xf86SetDDCproperties(ScrnInfoPtr pScrn, xf86MonPtr DDC)
{
if (!pScrn || !pScrn->monitor || !DDC)
return FALSE;
xf86DDCMonitorSet(pScrn->scrnIndex, pScrn->monitor, DDC);
addRootWindowProperties(pScrn, DDC);
return TRUE;
}
|
