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Publish the raw EDID block as a property on the root window. 

This was removed in the patch for bug #5386, but is still useful.
This commit is contained in:
Adam Jackson 2006-09-14 19:00:10 -04:00
parent 7939c8dfb7
commit 71a15a7d57
1 changed files with 88 additions and 3 deletions
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91
hw/xfree86/ddc/ddcProperty.c
View File

@ -27,6 +27,10 @@
#include "xf86.h"
#include "xf86DDC.h"
#include <X11/Xatom.h>
#include "property.h"
#include "propertyst.h"
#include "xf86DDC.h"
/*
* xf86Mode.c should have a some more DisplayModePtr list handling.
@ -407,9 +411,88 @@ xf86DDCMonitorSet(int scrnIndex, MonPtr Monitor, xf86MonPtr DDC)
}
}
/*
* Empty shell that keeps most drivers happy.
*/
#define EDID1_ATOM_NAME "XFree86_DDC_EDID1_RAWDATA"
#define EDID2_ATOM_NAME "XFree86_DDC_EDID2_RAWDATA"
#define VDIF_ATOM_NAME "XFree86_DDC_VDIF_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) {
if ((EDID1rawdata = xalloc(128*sizeof(CARD8)))==NULL)
return;
EDID1Atom = MakeAtom(EDID1_ATOM_NAME, sizeof(EDID1_ATOM_NAME), TRUE);
memcpy(EDID1rawdata, DDC->rawData, 128);
xf86RegisterRootWindowProperty(scrnIndex, EDID1Atom, XA_INTEGER, 8,
128, (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), TRUE);
xf86RegisterRootWindowProperty(scrnIndex, EDID2Atom, XA_INTEGER, 8,
256, (unsigned char *)EDID2rawdata);
}
#if 0
if (DDC->vdif) {
#define VDIF_DUMMY_STRING "setting dummy VDIF property - please insert correct values\n"
VDIFAtom = MakeAtom(VDIF_ATOM_NAME, sizeof(VDIF_ATOM_NAME), TRUE);
xf86RegisterRootWindowProperty(scrnIndex, VDIFAtom, XA_STRING, 8,
strlen(VDIF_DUMMY_STRING), VDIF_DUMMY_STRING);
}
#endif
}
Bool
xf86SetDDCproperties(ScrnInfoPtr pScrn, xf86MonPtr DDC)
{
@ -418,5 +501,7 @@ xf86SetDDCproperties(ScrnInfoPtr pScrn, xf86MonPtr DDC)
xf86DDCMonitorSet(pScrn->scrnIndex, pScrn->monitor, DDC);
addRootWindowProperties(pScrn, DDC);
return TRUE;
}