xf86MonPtr
xf86DoEDID_DDC1(
int scrnIndex, void (*DDC1SetSpeed)(ScrnInfoPtr, xf86ddcSpeed),
unsigned int (*DDC1Read)(ScrnInfoPtr)
)
{
ScrnInfoPtr pScrn = xf86Screens[scrnIndex];
unsigned char *EDID_block = NULL;
xf86MonPtr tmp = NULL;
EDID_block = EDIDRead_DDC1(pScrn,DDC1SetSpeed,DDC1Read);
if (EDID_block){
tmp = xf86InterpretEDID(scrnIndex,EDID_block);
}
else LOGV("No EDID block returned\n");
if (!tmp)
LOGV("Cannot interpret EDID block\n");
return tmp;
}
xf86MonPtr
xf86DoEDID_DDC1(
int scrnIndex, void (*DDC1SetSpeed)(ScrnInfoPtr, xf86ddcSpeed),
unsigned int (*DDC1Read)(ScrnInfoPtr)
)
{
ScrnInfoPtr pScrn = xf86Screens[scrnIndex];
unsigned char *EDID_block = NULL;
xf86MonPtr tmp = NULL;
int sigio;
/* Default DDC and DDC1 to enabled. */
Bool noddc = FALSE, noddc1 = FALSE;
OptionInfoPtr options;
options = xnfalloc(sizeof(DDCOptions));
(void)memcpy(options, DDCOptions, sizeof(DDCOptions));
xf86ProcessOptions(pScrn->scrnIndex, pScrn->options, options);
xf86GetOptValBool(options, DDCOPT_NODDC, &noddc);
xf86GetOptValBool(options, DDCOPT_NODDC1, &noddc1);
xfree(options);
if (noddc || noddc1)
return NULL;
sigio = xf86BlockSIGIO();
EDID_block = EDIDRead_DDC1(pScrn,DDC1SetSpeed,DDC1Read);
xf86UnblockSIGIO(sigio);
if (EDID_block){
tmp = xf86InterpretEDID(scrnIndex,EDID_block);
}
#ifdef DEBUG
else ErrorF("No EDID block returned\n");
if (!tmp)
ErrorF("Cannot interpret EDID block\n");
#endif
return tmp;
}
/**
* Attempts to probe the monitor for EDID information, if NoDDC and NoDDC1 are
* unset. EDID information blocks are interpreted and the results returned in
* an xf86MonPtr.
*
* This function does not affect the list of modes used by drivers -- it is up
* to the driver to decide policy on what to do with EDID information.
*
* @return pointer to a new xf86MonPtr containing the EDID information.
* @return NULL if no monitor attached or failure to interpret the EDID.
*/
xf86MonPtr
xf86DoEDID_DDC1(ScrnInfoPtr pScrn, DDC1SetSpeedProc DDC1SetSpeed,
unsigned int (*DDC1Read) (ScrnInfoPtr))
{
unsigned char *EDID_block = NULL;
xf86MonPtr tmp = NULL;
/* Default DDC and DDC1 to enabled. */
Bool noddc = FALSE, noddc1 = FALSE;
OptionInfoPtr options;
options = xnfalloc(sizeof(DDCOptions));
(void) memcpy(options, DDCOptions, sizeof(DDCOptions));
xf86ProcessOptions(pScrn->scrnIndex, pScrn->options, options);
xf86GetOptValBool(options, DDCOPT_NODDC, &noddc);
xf86GetOptValBool(options, DDCOPT_NODDC1, &noddc1);
free(options);
if (noddc || noddc1)
return NULL;
OsBlockSignals();
EDID_block = EDIDRead_DDC1(pScrn, DDC1SetSpeed, DDC1Read);
OsReleaseSignals();
if (EDID_block) {
tmp = xf86InterpretEDID(pScrn->scrnIndex, EDID_block);
}
#ifdef DEBUG
else
ErrorF("No EDID block returned\n");
if (!tmp)
ErrorF("Cannot interpret EDID block\n");
#endif
return tmp;
}