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weston: add force-on option for DRM

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Add a new boolean output section key "force-on". When set to true, the
output will be enabled regardless of connector status. This is the
opposite of the mode=off setting.

Forcing connectors on is useful in special circumstances: avoid output
configuration changes due to hotplug e.g. with KVM switches, or hardware
with unreliable connector status readout for example.

Signed-off-by: Pekka Paalanen <pekka.paalanen@collabora.co.uk>
Reviewed-by: Ian Ray <ian.ray@ge.com>
This commit is contained in:
Pekka Paalanen
2018-05-23 14:34:36 +03:00
parent 944dd235b4
commit 9071817089
2 changed files with 28 additions and 2 deletions
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man/weston-drm.man
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@@ -95,6 +95,14 @@ NOTE: cms-colord plugin does not work correctly with this option. The plugin
chooses an arbitrary monitor to load the color profile for, but the
profile is applied equally to all cloned monitors regardless of their
properties.
.TP
\fBforce-on\fR=\fItrue\fR
Force the output to be enabled even if the connector is disconnected.
Defaults to false. Note that
.BR mode=off " will override " force-on=true .
When a connector is disconnected, there is no EDID information to provide
a list of video modes. Therefore a forced output should also have a
detailed mode line specified.
.
.\" ***************************************************************
.SH OPTIONS