Re: [PATCH v2 02/12] drm/i915: Update atomic state when removing mst connector.

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Reviewed-by: Ander Conselvan de Oliveira <conselvan2@xxxxxxxxx>

On Mon, 2015-07-27 at 14:35 +0200, Maarten Lankhorst wrote:
> Signed-off-by: Maarten Lankhorst <maarten.lankhorst@xxxxxxxxxxxxxxx>
> ---
>  drivers/gpu/drm/i915/intel_display.c |  7 ------
>  drivers/gpu/drm/i915/intel_dp_mst.c  | 45 
> +++++++++++++++++++++++++++++++++++-
>  2 files changed, 44 insertions(+), 8 deletions(-)
> 
> diff --git a/drivers/gpu/drm/i915/intel_display.c 
> b/drivers/gpu/drm/i915/intel_display.c
> index 7747520bf9f6..3ab0a8a8e702 100644
> --- a/drivers/gpu/drm/i915/intel_display.c
> +++ b/drivers/gpu/drm/i915/intel_display.c
> @@ -12751,13 +12751,6 @@ check_encoder_state(struct drm_device *dev)
>  					encoder->base.crtc,
>  			     "connector's crtc doesn't match encoder 
> crtc\n");
>  		}
> -		/*
> -		 * for MST connectors if we unplug the connector is 
> gone
> -		 * away but the encoder is still connected to a crtc
> -		 * until a modeset happens in response to the 
> hotplug.
> -		 */
> -		if (!enabled && encoder->base.encoder_type == 
> DRM_MODE_ENCODER_DPMST)
> -			continue;
>  
>  		I915_STATE_WARN(!!encoder->base.crtc != enabled,
>  		     "encoder's enabled state mismatch "
> diff --git a/drivers/gpu/drm/i915/intel_dp_mst.c 
> b/drivers/gpu/drm/i915/intel_dp_mst.c
> index 585f0a45b3f1..35f2eb59818a 100644
> --- a/drivers/gpu/drm/i915/intel_dp_mst.c
> +++ b/drivers/gpu/drm/i915/intel_dp_mst.c
> @@ -448,6 +448,49 @@ 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;
> +		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)
>  {
> @@ -455,7 +498,7 @@ static void intel_dp_destroy_mst_connector(struct 
> drm_dp_mst_topology_mgr *mgr,
>  	struct drm_device *dev = connector->dev;
>  	/* need to nuke the connector */
>  	drm_modeset_lock_all(dev);
> -	intel_connector_dpms(connector, DRM_MODE_DPMS_OFF);
> +	intel_dp_unbind_mst_connector(dev, connector);
>  	drm_modeset_unlock_all(dev);
>  
>  	intel_connector->unregister(intel_connector);
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