On Tue, 2020-03-10 at 21:06 +0200, Ville Syrjälä wrote:
> On Tue, Mar 10, 2020 at 02:54:16PM -0400, Lyude Paul wrote:
> > i915 can enable aux device nodes for DP MST by calling
> > drm_dp_mst_connector_late_register()/drm_dp_mst_connector_early_unregister
> > (),
> > so let's hook that up.
> >
> > Changes since v1:
> > * Call intel_connector_register/unregister() from
> > intel_dp_mst_connector_late_register/unregister() so we don't lose
> > error injection - Ville Syrjälä
> >
> > Cc: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>
> > Cc: Manasi Navare <manasi.d.navare@xxxxxxxxx>
> > Cc: "Lee, Shawn C" <shawn.c.lee@xxxxxxxxx>
> > Signed-off-by: Lyude Paul <lyude@xxxxxxxxxx>
> > ---
> > drivers/gpu/drm/i915/display/intel_dp_mst.c | 28 +++++++++++++++++++--
> > 1 file changed, 26 insertions(+), 2 deletions(-)
> >
> > diff --git a/drivers/gpu/drm/i915/display/intel_dp_mst.c
> > b/drivers/gpu/drm/i915/display/intel_dp_mst.c
> > index d53978ed3c12..9311c10f5b1b 100644
> > --- a/drivers/gpu/drm/i915/display/intel_dp_mst.c
> > +++ b/drivers/gpu/drm/i915/display/intel_dp_mst.c
> > @@ -548,12 +548,36 @@ static int intel_dp_mst_get_ddc_modes(struct
> > drm_connector *connector)
> > return ret;
> > }
> >
> > +static int
> > +intel_dp_mst_connector_late_register(struct drm_connector *connector)
> > +{
> > + struct intel_connector *intel_connector =
> > to_intel_connector(connector);
> > + int ret;
> > +
> > + ret = drm_dp_mst_connector_late_register(connector,
> > + intel_connector->port);
> > + if (ret < 0)
> > + return ret;
> > +
> > + return intel_connector_register(connector);
>
> Don't we have to undo the damage if this fails?
Yep, whoops. Will send out another respin with this fixed
>
> > +}
> > +
> > +static void
> > +intel_dp_mst_connector_early_unregister(struct drm_connector *connector)
> > +{
> > + struct intel_connector *intel_connector =
> > to_intel_connector(connector);
> > +
> > + intel_connector_unregister(connector);
> > + drm_dp_mst_connector_early_unregister(connector,
> > + intel_connector->port);
> > +}
> > +
> > static const struct drm_connector_funcs intel_dp_mst_connector_funcs = {
> > .fill_modes = drm_helper_probe_single_connector_modes,
> > .atomic_get_property = intel_digital_connector_atomic_get_property,
> > .atomic_set_property = intel_digital_connector_atomic_set_property,
> > - .late_register = intel_connector_register,
> > - .early_unregister = intel_connector_unregister,
> > + .late_register = intel_dp_mst_connector_late_register,
> > + .early_unregister = intel_dp_mst_connector_early_unregister,
> > .destroy = intel_connector_destroy,
> > .atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
> > .atomic_duplicate_state = intel_digital_connector_duplicate_state,
> > --
> > 2.24.1
--
Cheers,
Lyude Paul (she/her)
Associate Software Engineer at Red Hat
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