On Tue, Jul 21, 2015 at 09:56:15AM +0200, Maarten Lankhorst wrote:
> Signed-off-by: Maarten Lankhorst <maarten.lankhorst@xxxxxxxxxxxxxxx>
> ---
> drivers/gpu/drm/i915/intel_dp_mst.c | 44 ++++++++++++++++++++++++++++++++++++-
> 1 file changed, 43 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/gpu/drm/i915/intel_dp_mst.c b/drivers/gpu/drm/i915/intel_dp_mst.c
> index edd8fa41e85e..fb4f2715c96f 100644
> --- a/drivers/gpu/drm/i915/intel_dp_mst.c
> +++ b/drivers/gpu/drm/i915/intel_dp_mst.c
> @@ -449,6 +449,48 @@ static struct drm_connector *intel_dp_add_mst_connector(struct drm_dp_mst_topolo
> return connector;
> }
>
> +static void intel_dp_unbind_mst_connector(struct drm_device *dev,
> + struct drm_connector *connector)
> +{
> + struct drm_atomic_state *state;
> + struct drm_connector_state *conn_state;
> + struct drm_crtc *crtc = connector->state->crtc;
> + int ret;
> +
> + if (!crtc)
> + return;
> +
> + state = drm_atomic_state_alloc(dev);
> + if (!state)
> + return;
> +
> + state->acquire_ctx = dev->mode_config.acquire_ctx;
> +
> + conn_state = drm_atomic_get_connector_state(state, connector);
> + ret = PTR_ERR_OR_ZERO(conn_state);
> + if (!ret)
> + ret = drm_atomic_set_crtc_for_connector(conn_state, NULL);
> +
> + if (!ret)
> + ret = drm_atomic_add_affected_connectors(state, crtc);
> +
> + if (!ret && !drm_atomic_connectors_for_crtc(state, crtc)) {
> + struct drm_crtc_state *crtc_state =
> + drm_atomic_get_existing_crtc_state(state, crtc);
> +
> + crtc_state->active = false;
The connector will completely disappear, and we don't support cloning.
Which means there's still going to be state check failures. I think we
need a
crtc_state->enable = false;
here, plus cleaning out the connector_state->crtc link.
-Daniel
> + ret = drm_atomic_set_mode_for_crtc(crtc_state, NULL);
> + }
> +
> + if (!ret)
> + ret = drm_atomic_commit(state);
> +
> + if (ret)
> + drm_atomic_state_free(state);
> +
> + I915_STATE_WARN_ON(ret);
> +}
> +
> static void intel_dp_destroy_mst_connector(struct drm_dp_mst_topology_mgr *mgr,
> struct drm_connector *connector)
> {
> @@ -456,7 +498,7 @@ static void intel_dp_destroy_mst_connector(struct drm_dp_mst_topology_mgr *mgr,
> struct drm_device *dev = connector->dev;
>
> drm_modeset_lock_all(dev);
> - drm_atomic_helper_connector_dpms(connector, DRM_MODE_DPMS_OFF);
> + intel_dp_unbind_mst_connector(dev, connector);
> drm_modeset_unlock_all(dev);
>
> intel_connector->unregister(intel_connector);
> --
> 2.1.0
>
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--
Daniel Vetter
Software Engineer, Intel Corporation
http://blog.ffwll.ch
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