On Fri, Oct 9, 2020 at 11:24 AM Simon Ser <[email protected]> wrote: > > User-space should avoid parsing EDIDs for metadata already exposed via > other KMS interfaces and properties. For instance, user-space should not > try to extract a list of modes from the EDID: the kernel might mutate > the mode list (because of link capabilities or quirks for instance). > > Other metadata not exposed by KMS can be parsed by user-space. This > includes for instance monitor identification (make/model/serial) and > supported color-spaces. > > Signed-off-by: Simon Ser <[email protected]> > Suggested-by: Daniel Vetter <[email protected]> > Cc: Daniel Vetter <[email protected]> > Cc: Pekka Paalanen <[email protected]> > Cc: Ville Syrjälä <[email protected]>
Reviewed-by: Daniel Vetter <[email protected]> > --- > drivers/gpu/drm/drm_connector.c | 4 ++++ > 1 file changed, 4 insertions(+) > > diff --git a/drivers/gpu/drm/drm_connector.c b/drivers/gpu/drm/drm_connector.c > index 717c4e7271b0..00e58fd2d292 100644 > --- a/drivers/gpu/drm/drm_connector.c > +++ b/drivers/gpu/drm/drm_connector.c > @@ -960,6 +960,10 @@ static const struct drm_prop_enum_list dp_colorspaces[] > = { > * drm_connector_update_edid_property(), usually after having parsed > * the EDID using drm_add_edid_modes(). Userspace cannot change this > * property. > + * > + * User-space should not parse the EDID to obtain information exposed via > + * other KMS properties. For instance, user-space should not try to parse > + * mode lists from the EDID. > * DPMS: > * Legacy property for setting the power state of the connector. For > atomic > * drivers this is only provided for backwards compatibility with > existing > -- > 2.28.0 > > > _______________________________________________ > dri-devel mailing list > [email protected] > https://lists.freedesktop.org/mailman/listinfo/dri-devel -- Daniel Vetter Software Engineer, Intel Corporation http://blog.ffwll.ch _______________________________________________ dri-devel mailing list [email protected] https://lists.freedesktop.org/mailman/listinfo/dri-devel
