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xfree86: Add Option "PreferCloneMode" 

When the default behaviour was changed from clone mode to horizontal
extended layout, a boolean ScrnInfoRec member preferClone was introduced
to choose the old default behaviour. Option "PreferCloneMode" allows
setting this preferClone member.

Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Michel Dänzer 2017-05-25 16:19:35 +09:00
parent 87db150d8a
commit d164c10850
2 changed files with 9 additions and 0 deletions
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5
hw/xfree86/man/xorg.conf.man
View File

@ -1495,6 +1495,11 @@ option.
.BI "Option \*qModeDebug\*q \*q" boolean \*q
Enable printing of additional debugging information about modesetting to
the server log.
.TP 7
.BI "Option \*qPreferCloneMode\*q \*q" boolean \*q
If enabled, bring up monitors of a screen in clone mode instead of horizontal
extended layout by default. (Defaults to off; the video driver can change the
default value, but this option can always override it)
.ig
.TP 7
This optional entry allows an IRQ number to be specified.

4
hw/xfree86/modes/xf86Crtc.c
View File

@ -469,10 +469,12 @@ static OptionInfoRec xf86OutputOptions[] = {
enum {
OPTION_MODEDEBUG,
OPTION_PREFER_CLONEMODE,
};
static OptionInfoRec xf86DeviceOptions[] = {
{OPTION_MODEDEBUG, "ModeDebug", OPTV_BOOLEAN, {0}, FALSE},
{OPTION_PREFER_CLONEMODE, "PreferCloneMode", OPTV_BOOLEAN, {0}, FALSE},
{-1, NULL, OPTV_NONE, {0}, FALSE},
};
@ -2134,6 +2136,8 @@ xf86TargetRightOf(ScrnInfoPtr scrn, xf86CrtcConfigPtr config,
Bool has_tile = FALSE;
uint32_t configured_outputs;
xf86GetOptValBool(config->options, OPTION_PREFER_CLONEMODE,
&scrn->preferClone);
if (scrn->preferClone)
return FALSE;