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ddc: Skeleton for xf86DoDisplayID()

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This commit is contained in:
Adam Jackson 2009-06-08 17:42:10 -04:00
parent 0b36f68efb
commit c302a5ff49
1 changed files with 59 additions and 1 deletions
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60
hw/xfree86/ddc/ddc.c
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@ -426,7 +426,7 @@ xf86DoEEDID(int scrnIndex, I2CBusPtr pBus, Bool complete)
}
if (tmp && complete)
tmp->flags |= EDID_COMPLETE_RAWDATA;
tmp->flags |= MONITOR_EDID_COMPLETE_RAWDATA;
return tmp;
}
@ -447,3 +447,61 @@ xf86DoEDID_DDC2(int scrnIndex, I2CBusPtr pBus)
{
return xf86DoEEDID(scrnIndex, pBus, FALSE);
}
/* XXX write me */
static void *
DDC2ReadDisplayID(void)
{
return FALSE;
}
/**
* Attempts to probe the monitor for DisplayID information, if NoDDC and
* NoDDC2 are unset. DisplayID 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 DisplayID information.
*
* @return pointer to a new xf86MonPtr containing the DisplayID information.
* @return NULL if no monitor attached or failure to interpret the DisplayID.
*/
xf86MonPtr
xf86DoDisplayID(int scrnIndex, I2CBusPtr pBus)
{
ScrnInfoPtr pScrn = xf86Screens[scrnIndex];
unsigned char *did = NULL;
xf86MonPtr tmp = NULL;
I2CDevPtr dev = NULL;
/* Default DDC and DDC2 to enabled. */
Bool noddc = FALSE, noddc2 = FALSE;
OptionInfoPtr options;
options = xalloc(sizeof(DDCOptions));
if (!options)
return NULL;
memcpy(options, DDCOptions, sizeof(DDCOptions));
xf86ProcessOptions(pScrn->scrnIndex, pScrn->options, options);
xf86GetOptValBool(options, DDCOPT_NODDC, &noddc);
xf86GetOptValBool(options, DDCOPT_NODDC2, &noddc2);
xfree(options);
if (noddc || noddc2)
return NULL;
if (!(dev = DDC2Init(scrnIndex, pBus)))
return NULL;
if ((did = DDC2ReadDisplayID())) {
tmp = xcalloc(1, sizeof(*tmp));
if (!tmp)
return NULL;
tmp->scrnIndex = scrnIndex;
tmp->flags |= MONITOR_DISPLAYID;
tmp->rawData = did;
}
return tmp;
}