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/*
* 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;
}
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