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drm: add tile_group support. (v3)
authorDave Airlie <airlied@redhat.com>
Mon, 20 Oct 2014 06:17:17 +0000 (16:17 +1000)
committerDave Airlie <airlied@redhat.com>
Mon, 8 Dec 2014 23:56:46 +0000 (09:56 +1000)
commit138f9ebb9755a8cf09fd6a9ff8d011aaf5fb478f
tree167bcb1d1c10d7ea77ac084399698c7ad7c616ac
parentb49b55bd4fba6aa9bb25459e0ac3991c60c4aba4
drm: add tile_group support. (v3)

A tile group is an identifier shared by a single monitor,
DisplayID topology has 8 bytes we can use for this, just
use those for now until something else comes up in the
future. We assign these to an idr and use the idr to
tell userspace what connectors are in the same tile group.

DisplayID v1.3 says the serial number must be unique for
displays from the same manufacturer.

v2:
destroy idr (dvdhrm)
add docbook (danvet)
airlied:- not sure how to make docbook add fns to tile group section.

v3: fix missing unlock.

Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Documentation/DocBook/drm.tmpl
drivers/gpu/drm/drm_crtc.c
include/drm/drm_crtc.h