126 lines
3.7 KiB
C
126 lines
3.7 KiB
C
/*
|
|
* 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"
|
|
#include <string.h>
|
|
|
|
#define EDID1_ATOM_NAME "XFree86_DDC_EDID1_RAWDATA"
|
|
#define EDID2_ATOM_NAME "XFree86_DDC_EDID2_RAWDATA"
|
|
|
|
static void
|
|
edidMakeAtom(int i, const char *name, CARD8 *data, int size)
|
|
{
|
|
Atom atom;
|
|
unsigned char *atom_data;
|
|
|
|
if (!(atom_data = xalloc(size*sizeof(CARD8))))
|
|
return;
|
|
|
|
atom = MakeAtom(name, strlen(name), TRUE);
|
|
memcpy(atom_data, data, size);
|
|
xf86RegisterRootWindowProperty(i, atom, XA_INTEGER, 8, size, atom_data);
|
|
}
|
|
|
|
static void
|
|
addRootWindowProperties(ScrnInfoPtr pScrn, xf86MonPtr DDC)
|
|
{
|
|
int i, scrnIndex = pScrn->scrnIndex;
|
|
Bool makeEDID1prop = FALSE;
|
|
Bool makeEDID2prop = FALSE;
|
|
|
|
if (DDC->flags & MONITOR_DISPLAYID) {
|
|
/* Don't bother, use RANDR already */
|
|
return;
|
|
} else 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 +
|
|
(DDC->flags & EDID_COMPLETE_RAWDATA ? DDC->no_sections * 128 : 0);
|
|
|
|
edidMakeAtom(scrnIndex, EDID1_ATOM_NAME, DDC->rawData, size);
|
|
}
|
|
|
|
if (makeEDID2prop)
|
|
edidMakeAtom(scrnIndex, EDID2_ATOM_NAME, DDC->rawData, 256);
|
|
}
|
|
|
|
Bool
|
|
xf86SetDDCproperties(ScrnInfoPtr pScrn, xf86MonPtr DDC)
|
|
{
|
|
if (!pScrn || !pScrn->monitor || !DDC)
|
|
return FALSE;
|
|
|
|
if (DDC->flags & MONITOR_DISPLAYID)
|
|
;
|
|
else
|
|
xf86EdidMonitorSet(pScrn->scrnIndex, pScrn->monitor, DDC);
|
|
|
|
addRootWindowProperties(pScrn, DDC);
|
|
|
|
return TRUE;
|
|
}
|