On Thu, Nov 19, 2015 at 12:12:28PM +0200, Ville Syrjälä wrote:
> On Wed, Nov 18, 2015 at 06:46:48PM +0100, Daniel Vetter wrote:
> > This was totally lost when I originally created the atomic helpers.
> >
> > We probably should also check possible_clones in the helpers, but
> > since the legacy ones didn't do that this is for a separate patch.
> >
> > Reported-by: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>
> > Cc: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>
> > Cc: Daniel Stone <daniels@xxxxxxxxxxxxx>
> > Signed-off-by: Daniel Vetter <daniel.vetter@xxxxxxxxx>
>
> Reviewed-by: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>
> Tested-by: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>
>
> But the rest of update_connector_routing() still looks somewhat bonkers
> to me. For one, it assumes that both the old and new crtc for the
> connector are part of the atomic state, but drm_atomic_set_crtc_for_connector()
> only adds the new crtc, not the old one.
Nothing bonkers about it since drm_atomic_get_connector_state ensures that
the corresponding crtc state is part of the update. Same logic applies for
planes.
-Daniel
>
> > ---
> > drivers/gpu/drm/drm_atomic_helper.c | 8 ++++++++
> > 1 file changed, 8 insertions(+)
> >
> > diff --git a/drivers/gpu/drm/drm_atomic_helper.c b/drivers/gpu/drm/drm_atomic_helper.c
> > index 0c6f62168776..cfdc9931b08a 100644
> > --- a/drivers/gpu/drm/drm_atomic_helper.c
> > +++ b/drivers/gpu/drm/drm_atomic_helper.c
> > @@ -210,6 +210,14 @@ update_connector_routing(struct drm_atomic_state *state, int conn_idx)
> > return -EINVAL;
> > }
> >
> > + if (!drm_encoder_crtc_ok(new_encoder, connector_state->crtc)) {
> > + DRM_DEBUG_ATOMIC("[ENCODER:%d:%s] incompatible with [CRTC:%d]\n",
> > + new_encoder->base.id,
> > + new_encoder->name,
> > + connector_state->crtc->base.id);
> > + return -EINVAL;
> > + }
> > +
> > if (new_encoder == connector_state->best_encoder) {
> > DRM_DEBUG_ATOMIC("[CONNECTOR:%d:%s] keeps [ENCODER:%d:%s], now on [CRTC:%d]\n",
> > connector->base.id,
> > --
> > 2.5.1
>
> --
> Ville Syrjälä
> Intel OTC
--
Daniel Vetter
Software Engineer, Intel Corporation
http://blog.ffwll.ch
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