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

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>
dev
Pekka Paalanen 8 years ago
parent b45ed8baf0
commit 8a9c8b08cf
  1. 2
      compositor/main.c
  2. 7
      man/weston-drm.man

@ -565,6 +565,7 @@ usage(int error_code)
"Options for drm-backend.so:\n\n"
" --seat=SEAT\t\tThe seat that weston should run on\n"
" --tty=TTY\t\tThe tty to use\n"
" --drm-device=CARD\tThe DRM device to use, e.g. \"card0\".\n"
" --use-pixman\t\tUse the pixman (CPU) renderer\n"
" --current-mode\tPrefer current KMS mode over EDID preferred mode\n\n");
#endif
@ -1225,6 +1226,7 @@ load_drm_backend(struct weston_compositor *c,
const struct weston_option options[] = {
{ WESTON_OPTION_STRING, "seat", 0, &config.seat_id },
{ WESTON_OPTION_INTEGER, "tty", 0, &config.tty },
{ WESTON_OPTION_STRING, "drm-device", 0, &config.specific_device },
{ WESTON_OPTION_BOOLEAN, "current-mode", 0, &wet->drm_use_current_mode },
{ WESTON_OPTION_BOOLEAN, "use-pixman", 0, &config.use_pixman },
};

@ -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

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