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xfree86: Make xf86SetDDCproperties work more than once (v2)

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We can call this more than once via xf86OutputSetEDID since hotplug is
actually a thing in RANDR 1.2, but xf86RegisterRootWindowProperty merely
adds the data to a list to be applied to the root at CreateWindow time,
so calls past the first (for a given screen) would have no effect until
server regen.

Once we've initialised pScrn->pScreen is filled in, so we can just set
the property directly.

v2: Removed pointless version check, deobfuscate math (Walter Harms)

Reviewed-by: Michel Dänzer <michel.daenzer@amd.com>
Signed-off-by: Adam Jackson <ajax@redhat.com>
This commit is contained in:
Adam Jackson 2016-01-06 08:47:37 -05:00
parent 8be83fff04
commit 7961377567
1 changed files with 29 additions and 6 deletions
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35
hw/xfree86/ddc/ddcProperty.c
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@ -27,6 +27,7 @@
#include "xf86.h"
#include "xf86DDC.h"
#include "xf86Priv.h"
#include <X11/Xatom.h>
#include "property.h"
#include "propertyst.h"
@ -34,17 +35,39 @@
#define EDID1_ATOM_NAME "XFree86_DDC_EDID1_RAWDATA"
static int
edidSize(const xf86MonPtr DDC)
{
int ret = 128;
if (DDC->flags & EDID_COMPLETE_RAWDATA)
ret += DDC->no_sections * 128;
return ret;
}
static void
edidMakeAtom(int i, const char *name, CARD8 *data, int size)
setRootWindowEDID(ScreenPtr pScreen, xf86MonPtr DDC)
{
Atom atom = MakeAtom(EDID1_ATOM_NAME, strlen(EDID1_ATOM_NAME), TRUE);
dixChangeWindowProperty(serverClient, pScreen->root, atom, XA_INTEGER,
8, PropModeReplace, edidSize(DDC), DDC->rawData,
FALSE);
}
static void
edidMakeAtom(int i, const char *name, xf86MonPtr DDC)
{
Atom atom;
unsigned char *atom_data;
int size = edidSize(DDC);
if (!(atom_data = malloc(size * sizeof(CARD8))))
return;
atom = MakeAtom(name, strlen(name), TRUE);
memcpy(atom_data, data, size);
memcpy(atom_data, DDC->rawData, size);
xf86RegisterRootWindowProperty(i, atom, XA_INTEGER, 8, size, atom_data);
}
@ -54,10 +77,10 @@ addRootWindowProperties(ScrnInfoPtr pScrn, xf86MonPtr DDC)
int scrnIndex = pScrn->scrnIndex;
if (DDC->ver.version == 1) {
int size = 128 +
(DDC->flags & EDID_COMPLETE_RAWDATA ? DDC->no_sections * 128 : 0);
edidMakeAtom(scrnIndex, EDID1_ATOM_NAME, DDC->rawData, size);
if (xf86Initialising)
edidMakeAtom(scrnIndex, EDID1_ATOM_NAME, DDC);
else
setRootWindowEDID(pScrn->pScreen, DDC);
}
else {
xf86DrvMsg(scrnIndex, X_PROBED, "unexpected EDID version %d.%d\n",