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weston: add --drm-device option for DRM-backend

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Developers with testing rigs having multiple graphics cards plugged in
often want to test things on a specific card. We have ways to choose a
card through seat assignments, but configuring that run by run is
awkward.

Add a command line option for opening a specific DRM device.

v2: call it --drm-device instead of --device

Signed-off-by: Pekka Paalanen <pekka.paalanen@collabora.co.uk>
Reviewed-by: Daniel Stone <daniels@collabora.com>
This commit is contained in:
Pekka Paalanen
2017-03-28 18:14:37 +03:00
parent b45ed8baf0
commit 8a9c8b08cf
2 changed files with 9 additions and 0 deletions
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man/weston-drm.man
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@@ -91,6 +91,13 @@ will understand the following additional command line options.
By default, use the current video mode of all outputs, instead of
switching to the monitor preferred mode.
.TP
\fB\-\-drm\-device\fR=\fIcardN\fR
Use the DRM device
.I cardN
instead of the default heuristics based on seat assignments and boot VGA
status. For example, use
.BR card0 .
.TP
\fB\-\-seat\fR=\fIseatid\fR
Use graphics and input devices designated for seat
.I seatid