On Wed, May 20, 2015 at 06:04:27PM +0200, maarten.lankho...@linux.intel.com 
wrote:
> From: Ander Conselvan de Oliveira <ander.conselvan.de.olive...@intel.com>
> 
> To make this work we load the new hardware state into the
> atomic_state, then swap it with the sw state.
> 
> This lets us change the force restore path in setup_hw_state()
> to use a single call to intel_mode_set() to restore all the
> previous state.
> 
> As a nice bonus this kills off encoder->new_encoder,
> connector->new_enabled and crtc->new_enabled. They were used only
> to restore the state after a modeset.
> 
> Signed-off-by: Ander Conselvan de Oliveira 
> <ander.conselvan.de.olive...@intel.com>
> Signed-off-by: Maarten Lankhorst <maarten.lankho...@linux.intel.com>
> ---
>  drivers/gpu/drm/i915/intel_atomic.c  |   2 +-
>  drivers/gpu/drm/i915/intel_display.c | 377 
> ++++++++++++++++++++++-------------
>  drivers/gpu/drm/i915/intel_drv.h     |  14 +-
>  3 files changed, 241 insertions(+), 152 deletions(-)
> 
> diff --git a/drivers/gpu/drm/i915/intel_atomic.c 
> b/drivers/gpu/drm/i915/intel_atomic.c
> index 83078763ba14..17bf9e80c557 100644
> --- a/drivers/gpu/drm/i915/intel_atomic.c
> +++ b/drivers/gpu/drm/i915/intel_atomic.c
> @@ -395,7 +395,7 @@ int intel_atomic_setup_scalers(struct drm_device *dev,
>       return 0;
>  }
>  
> -static void
> +void
>  intel_atomic_duplicate_dpll_state(struct drm_i915_private *dev_priv,
>                                 struct intel_shared_dpll_config *shared_dpll)
>  {
> diff --git a/drivers/gpu/drm/i915/intel_display.c 
> b/drivers/gpu/drm/i915/intel_display.c
> index e7aa8610cbdc..a42e7d7bf86b 100644
> --- a/drivers/gpu/drm/i915/intel_display.c
> +++ b/drivers/gpu/drm/i915/intel_display.c
> @@ -9639,7 +9639,7 @@ bool intel_get_load_detect_pipe(struct drm_connector 
> *connector,
>  retry:
>       ret = drm_modeset_lock(&config->connection_mutex, ctx);
>       if (ret)
> -             goto fail_unlock;
> +             goto fail;
>  
>       /*
>        * Algorithm gets a little messy:
> @@ -9657,10 +9657,10 @@ retry:
>  
>               ret = drm_modeset_lock(&crtc->mutex, ctx);
>               if (ret)
> -                     goto fail_unlock;
> +                     goto fail;
>               ret = drm_modeset_lock(&crtc->primary->mutex, ctx);
>               if (ret)
> -                     goto fail_unlock;
> +                     goto fail;
>  
>               old->dpms_mode = connector->dpms;
>               old->load_detect_temp = false;
> @@ -9679,9 +9679,6 @@ retry:
>                       continue;
>               if (possible_crtc->state->enable)
>                       continue;
> -             /* This can occur when applying the pipe A quirk on resume. */
> -             if (to_intel_crtc(possible_crtc)->new_enabled)
> -                     continue;
>  
>               crtc = possible_crtc;
>               break;
> @@ -9692,20 +9689,17 @@ retry:
>        */
>       if (!crtc) {
>               DRM_DEBUG_KMS("no pipe available for load-detect\n");
> -             goto fail_unlock;
> +             goto fail;
>       }
>  
>       ret = drm_modeset_lock(&crtc->mutex, ctx);
>       if (ret)
> -             goto fail_unlock;
> +             goto fail;
>       ret = drm_modeset_lock(&crtc->primary->mutex, ctx);
>       if (ret)
> -             goto fail_unlock;
> -     intel_encoder->new_crtc = to_intel_crtc(crtc);
> -     to_intel_connector(connector)->new_encoder = intel_encoder;
> +             goto fail;
>  
>       intel_crtc = to_intel_crtc(crtc);
> -     intel_crtc->new_enabled = true;
>       old->dpms_mode = connector->dpms;
>       old->load_detect_temp = true;
>       old->release_fb = NULL;
> @@ -9773,9 +9767,7 @@ retry:
>       intel_wait_for_vblank(dev, intel_crtc->pipe);
>       return true;
>  
> - fail:
> -     intel_crtc->new_enabled = crtc->state->enable;
> -fail_unlock:
> +fail:
>       drm_atomic_state_free(state);
>       state = NULL;
>  
> @@ -9821,10 +9813,6 @@ void intel_release_load_detect_pipe(struct 
> drm_connector *connector,
>               if (IS_ERR(crtc_state))
>                       goto fail;
>  
> -             to_intel_connector(connector)->new_encoder = NULL;
> -             intel_encoder->new_crtc = NULL;
> -             intel_crtc->new_enabled = false;
> -
>               connector_state->best_encoder = NULL;
>               connector_state->crtc = NULL;
>  
> @@ -10969,33 +10957,6 @@ static const struct drm_crtc_helper_funcs 
> intel_helper_funcs = {
>       .atomic_flush = intel_finish_crtc_commit,
>  };
>  
> -/**
> - * intel_modeset_update_staged_output_state
> - *
> - * Updates the staged output configuration state, e.g. after we've read out 
> the
> - * current hw state.
> - */
> -static void intel_modeset_update_staged_output_state(struct drm_device *dev)
> -{
> -     struct intel_crtc *crtc;
> -     struct intel_encoder *encoder;
> -     struct intel_connector *connector;
> -
> -     for_each_intel_connector(dev, connector) {
> -             connector->new_encoder =
> -                     to_intel_encoder(connector->base.encoder);
> -     }
> -
> -     for_each_intel_encoder(dev, encoder) {
> -             encoder->new_crtc =
> -                     to_intel_crtc(encoder->base.crtc);
> -     }
> -
> -     for_each_intel_crtc(dev, crtc) {
> -             crtc->new_enabled = crtc->base.state->enable;
> -     }
> -}
> -
>  /* Transitional helper to copy current connector/encoder state to
>   * connector->state. This is needed so that code that is partially
>   * converted to atomic does the right thing.
> @@ -11526,7 +11487,6 @@ intel_modeset_update_state(struct drm_atomic_state 
> *state)
>       }
>  
>       drm_atomic_helper_update_legacy_modeset_state(state->dev, state);
> -     intel_modeset_update_staged_output_state(state->dev);
>  
>       /* Double check state. */
>       for_each_crtc(dev, crtc) {
> @@ -11832,11 +11792,14 @@ check_connector_state(struct drm_device *dev)
>       struct intel_connector *connector;
>  
>       for_each_intel_connector(dev, connector) {
> +             struct drm_encoder *encoder = connector->base.encoder;
> +             struct drm_connector_state *state = connector->base.state;
> +
>               /* This also checks the encoder/connector hw state with the
>                * ->get_hw_state callbacks. */
>               intel_connector_check_state(connector);
>  
> -             I915_STATE_WARN(&connector->new_encoder->base != 
> connector->base.encoder,
> +             I915_STATE_WARN(state->best_encoder != encoder,
>                    "connector's staged encoder doesn't match current 
> encoder\n");
>       }
>  }
> @@ -11856,8 +11819,6 @@ check_encoder_state(struct drm_device *dev)
>                             encoder->base.base.id,
>                             encoder->base.name);
>  
> -             I915_STATE_WARN(&encoder->new_crtc->base != encoder->base.crtc,
> -                  "encoder's stage crtc doesn't match current crtc\n");
>               I915_STATE_WARN(encoder->connectors_active && 
> !encoder->base.crtc,
>                    "encoder's active_connectors set, but no crtc\n");
>  
> @@ -11867,6 +11828,9 @@ check_encoder_state(struct drm_device *dev)
>                       enabled = true;
>                       if (connector->base.dpms != DRM_MODE_DPMS_OFF)
>                               active = true;
> +
> +                     I915_STATE_WARN(connector->base.state->crtc != 
> encoder->base.crtc,
> +                          "encoder's stage crtc doesn't match current 
> crtc\n");
>               }
>               /*
>                * for MST connectors if we unplug the connector is gone
> @@ -12296,11 +12260,11 @@ void intel_crtc_restore_mode(struct drm_crtc *crtc)
>        * need to copy the staged config to the atomic state, otherwise the
>        * mode set will just reapply the state the HW is already in. */
>       for_each_intel_encoder(dev, encoder) {
> -             if (&encoder->new_crtc->base != crtc)
> +             if (encoder->base.crtc != crtc)
>                       continue;
>  
>               for_each_intel_connector(dev, connector) {
> -                     if (connector->new_encoder != encoder)
> +                     if (connector->base.state->best_encoder != 
> &encoder->base)
>                               continue;
>  
>                       connector_state = drm_atomic_get_connector_state(state, 
> &connector->base);
> @@ -12313,14 +12277,10 @@ void intel_crtc_restore_mode(struct drm_crtc *crtc)
>                       }
>  
>                       connector_state->crtc = crtc;
> -                     connector_state->best_encoder = &encoder->base;
>               }
>       }
>  
>       for_each_intel_crtc(dev, intel_crtc) {
> -             if (intel_crtc->new_enabled == intel_crtc->base.enabled)
> -                     continue;
> -
>               crtc_state = intel_atomic_get_crtc_state(state, intel_crtc);
>               if (IS_ERR(crtc_state)) {
>                       DRM_DEBUG_KMS("Failed to add [CRTC:%d] to state: %ld\n",
> @@ -12329,9 +12289,6 @@ void intel_crtc_restore_mode(struct drm_crtc *crtc)
>                       continue;
>               }
>  
> -             crtc_state->base.active = crtc_state->base.enable =
> -                     intel_crtc->new_enabled;
> -
>               if (&intel_crtc->base == crtc)
>                       drm_mode_copy(&crtc_state->base.mode, &crtc->mode);
>       }
> @@ -14552,99 +14509,224 @@ static bool primary_get_hw_state(struct intel_crtc 
> *crtc)
>  {
>       struct drm_i915_private *dev_priv = crtc->base.dev->dev_private;
>  
> -     if (!crtc->active)
> +     if (!crtc->base.enabled)
>               return false;
>  
>       return I915_READ(DSPCNTR(crtc->plane)) & DISPLAY_PLANE_ENABLE;
>  }
>  
> -static void intel_modeset_readout_hw_state(struct drm_device *dev)
> +static int readout_hw_crtc_state(struct drm_atomic_state *state,
> +                              struct intel_crtc *crtc)
>  {
> -     struct drm_i915_private *dev_priv = dev->dev_private;
> -     enum pipe pipe;
> -     struct intel_crtc *crtc;
> -     struct intel_encoder *encoder;
> -     struct intel_connector *connector;
> -     int i;
> +     struct drm_i915_private *dev_priv = to_i915(state->dev);
> +     struct intel_crtc_state *crtc_state;
> +     struct drm_plane *primary = crtc->base.primary;
> +     struct drm_plane_state *drm_plane_state;
> +     struct intel_plane_state *plane_state;
> +     int ret;
>  
> -     for_each_intel_crtc(dev, crtc) {
> -             struct drm_plane *primary = crtc->base.primary;
> -             struct intel_plane_state *plane_state;
> +     crtc_state = intel_atomic_get_crtc_state(state, crtc);
> +     if (IS_ERR(crtc_state))
> +             return PTR_ERR(crtc_state);
>  
> -             memset(crtc->config, 0, sizeof(*crtc->config));
> -             crtc->config->base.crtc = &crtc->base;
> +     ret = drm_atomic_add_affected_planes(state, &crtc->base);
> +     if (ret)
> +             return ret;

Do we actually try to handle non-primary planes in this function?  If
I'm following this properly, at bootup we won't add any sprite or cursor
planes here, even though it's possible that a graphics firmware has
turned some of them on.  It seems like our sw and hw states will still
be a bit inconsistent in that case.


Matt

>  
> -             crtc->config->quirks |= PIPE_CONFIG_QUIRK_INHERITED_MODE;
> +     memset(crtc_state, 0, sizeof(*crtc_state));
> +     crtc_state->base.crtc = &crtc->base;
> +     crtc_state->base.state = state;
>  
> -             crtc->active = dev_priv->display.get_pipe_config(crtc,
> -                                                              crtc->config);
> +     crtc_state->quirks |= PIPE_CONFIG_QUIRK_INHERITED_MODE;
>  
> -             crtc->base.state->enable = crtc->active;
> -             crtc->base.state->active = crtc->active;
> -             crtc->base.enabled = crtc->active;
> +     crtc_state->base.enable = crtc_state->base.active =
> +     crtc->base.enabled = dev_priv->display.get_pipe_config(crtc, 
> crtc_state);
>  
> -             plane_state = to_intel_plane_state(primary->state);
> -             plane_state->visible = primary_get_hw_state(crtc);
> +     /* update transitional state */
> +     crtc->active = crtc_state->base.active;
> +     crtc->config = crtc_state;
>  
> -             DRM_DEBUG_KMS("[CRTC:%d] hw state readout: %s\n",
> -                           crtc->base.base.id,
> -                           crtc->active ? "enabled" : "disabled");
> -     }
> +     drm_plane_state = drm_atomic_get_plane_state(state, primary);
> +     if (IS_ERR(drm_plane_state))
> +             return PTR_ERR(drm_plane_state);
> +
> +     plane_state = to_intel_plane_state(drm_plane_state);
> +     plane_state->visible = primary_get_hw_state(crtc);
> +
> +     if (plane_state->visible)
> +             crtc_state->base.plane_mask |= 1 << drm_plane_index(primary);
> +     else
> +             crtc_state->base.plane_mask &= ~(1 << drm_plane_index(primary));
> +
> +     DRM_DEBUG_KMS("[CRTC:%d] hw state readout: %s\n",
> +                   crtc->base.base.id,
> +                   crtc_state->base.active ? "enabled" : "disabled");
> +
> +     return 0;
> +}
> +
> +static int readout_hw_pll_state(struct drm_atomic_state *state)
> +{
> +     struct drm_i915_private *dev_priv = to_i915(state->dev);
> +     struct intel_shared_dpll_config *shared_dpll;
> +     struct intel_crtc *crtc;
> +     struct intel_crtc_state *crtc_state;
> +     int i;
>  
> +     shared_dpll = intel_atomic_get_shared_dpll_state(state);
>       for (i = 0; i < dev_priv->num_shared_dpll; i++) {
>               struct intel_shared_dpll *pll = &dev_priv->shared_dplls[i];
>  
>               pll->on = pll->get_hw_state(dev_priv, pll,
> -                                         &pll->config.hw_state);
> +                                         &shared_dpll[i].hw_state);
> +
>               pll->active = 0;
> -             pll->config.crtc_mask = 0;
> -             for_each_intel_crtc(dev, crtc) {
> -                     if (crtc->active && intel_crtc_to_shared_dpll(crtc) == 
> pll) {
> +             shared_dpll[i].crtc_mask = 0;
> +
> +             for_each_intel_crtc(state->dev, crtc) {
> +                     crtc_state = intel_atomic_get_crtc_state(state, crtc);
> +                     if (IS_ERR(crtc_state))
> +                             return PTR_ERR(crtc_state);
> +
> +                     if (crtc_state->base.active &&
> +                         crtc_state->shared_dpll == i) {
>                               pll->active++;
> -                             pll->config.crtc_mask |= 1 << crtc->pipe;
> +                             shared_dpll[i].crtc_mask |=
> +                                     1 << crtc->pipe;
>                       }
>               }
>  
>               DRM_DEBUG_KMS("%s hw state readout: crtc_mask 0x%08x, on %i\n",
> -                           pll->name, pll->config.crtc_mask, pll->on);
> +                           pll->name, shared_dpll[i].crtc_mask,
> +                           pll->on);
>  
> -             if (pll->config.crtc_mask)
> +             if (shared_dpll[i].crtc_mask)
>                       intel_display_power_get(dev_priv, POWER_DOMAIN_PLLS);
>       }
>  
> -     for_each_intel_encoder(dev, encoder) {
> -             pipe = 0;
> +     return 0;
> +}
>  
> -             if (encoder->get_hw_state(encoder, &pipe)) {
> -                     crtc = 
> to_intel_crtc(dev_priv->pipe_to_crtc_mapping[pipe]);
> -                     encoder->base.crtc = &crtc->base;
> -                     encoder->get_config(encoder, crtc->config);
> -             } else {
> -                     encoder->base.crtc = NULL;
> -             }
> +static struct drm_connector_state *
> +get_connector_state_for_encoder(struct drm_atomic_state *state,
> +                             struct intel_encoder *encoder)
> +{
> +     struct drm_connector *connector;
> +     struct drm_connector_state *connector_state;
> +     int i;
>  
> -             encoder->connectors_active = false;
> -             DRM_DEBUG_KMS("[ENCODER:%d:%s] hw state readout: %s, pipe %c\n",
> -                           encoder->base.base.id,
> -                           encoder->base.name,
> -                           encoder->base.crtc ? "enabled" : "disabled",
> -                           pipe_name(pipe));
> -     }
> +     for_each_connector_in_state(state, connector, connector_state, i)
> +             if (connector_state->best_encoder == &encoder->base)
> +                     return connector_state;
> +
> +     return NULL;
> +}
> +
> +static int readout_hw_connector_encoder_state(struct drm_atomic_state *state)
> +{
> +     struct drm_device *dev = state->dev;
> +     struct drm_i915_private *dev_priv = to_i915(state->dev);
> +     struct intel_crtc *crtc;
> +     struct drm_crtc_state *drm_crtc_state;
> +     struct intel_crtc_state *crtc_state;
> +     struct intel_encoder *encoder;
> +     struct intel_connector *connector;
> +     struct drm_connector_state *connector_state;
> +     enum pipe pipe;
>  
>       for_each_intel_connector(dev, connector) {
> +             connector_state =
> +                     drm_atomic_get_connector_state(state, &connector->base);
> +             if (IS_ERR(connector_state))
> +                     return PTR_ERR(connector_state);
> +
>               if (connector->get_hw_state(connector)) {
>                       connector->base.dpms = DRM_MODE_DPMS_ON;
> -                     connector->encoder->connectors_active = true;
>                       connector->base.encoder = &connector->encoder->base;
>               } else {
>                       connector->base.dpms = DRM_MODE_DPMS_OFF;
>                       connector->base.encoder = NULL;
>               }
> +
> +             /* We'll update the crtc field when reading encoder state */
> +             connector_state->crtc = NULL;
> +
> +             connector_state->best_encoder = connector->base.encoder;
> +
>               DRM_DEBUG_KMS("[CONNECTOR:%d:%s] hw state readout: %s\n",
>                             connector->base.base.id,
>                             connector->base.name,
>                             connector->base.encoder ? "enabled" : "disabled");
>       }
> +
> +     for_each_intel_encoder(dev, encoder) {
> +             pipe = 0;
> +
> +             connector_state =
> +                     get_connector_state_for_encoder(state, encoder);
> +
> +             encoder->connectors_active = !!connector_state;
> +
> +             if (encoder->get_hw_state(encoder, &pipe)) {
> +                     encoder->base.crtc =
> +                             dev_priv->pipe_to_crtc_mapping[pipe];
> +                     crtc = to_intel_crtc(encoder->base.crtc);
> +
> +                     drm_crtc_state =
> +                             state->crtc_states[drm_crtc_index(&crtc->base)];
> +                     crtc_state = to_intel_crtc_state(drm_crtc_state);
> +
> +                     encoder->get_config(encoder, crtc_state);
> +
> +                     if (connector_state)
> +                             connector_state->crtc = &crtc->base;
> +             } else {
> +                     encoder->base.crtc = NULL;
> +             }
> +
> +             DRM_DEBUG_KMS("[ENCODER:%d:%s] hw state readout: %s, pipe %c\n",
> +                           encoder->base.base.id,
> +                           encoder->base.name,
> +                           encoder->base.crtc ? "enabled" : "disabled",
> +                           pipe_name(pipe));
> +     }
> +
> +     return 0;
> +}
> +
> +static struct drm_atomic_state *
> +intel_modeset_readout_hw_state(struct drm_device *dev)
> +{
> +     struct intel_crtc *crtc;
> +     int ret = 0;
> +
> +     struct drm_atomic_state *state;
> +
> +     state = drm_atomic_state_alloc(dev);
> +     if (!state)
> +             return ERR_PTR(-ENOMEM);
> +
> +     state->acquire_ctx = dev->mode_config.acquire_ctx;
> +
> +     for_each_intel_crtc(dev, crtc) {
> +             ret = readout_hw_crtc_state(state, crtc);
> +             if (ret)
> +                     goto err_free;
> +     }
> +
> +     ret = readout_hw_pll_state(state);
> +     if (ret)
> +             goto err_free;
> +
> +     ret = readout_hw_connector_encoder_state(state);
> +     if (ret)
> +             goto err_free;
> +
> +     return state;
> +
> +err_free:
> +     drm_atomic_state_free(state);
> +     return ERR_PTR(ret);
>  }
>  
>  /* Scan out the current hw modeset state, sanitizes it and maps it into the 
> drm
> @@ -14653,37 +14735,57 @@ void intel_modeset_setup_hw_state(struct drm_device 
> *dev,
>                                 bool force_restore)
>  {
>       struct drm_i915_private *dev_priv = dev->dev_private;
> -     enum pipe pipe;
> -     struct intel_crtc *crtc;
> +     struct drm_crtc *crtc;
> +     struct drm_crtc_state *crtc_state;
>       struct intel_encoder *encoder;
> +     struct drm_atomic_state *state;
> +     struct intel_shared_dpll_config shared_dplls[I915_NUM_PLLS];
>       int i;
>  
> -     intel_modeset_readout_hw_state(dev);
> -
> -     /*
> -      * Now that we have the config, copy it to each CRTC struct
> -      * Note that this could go away if we move to using crtc_config
> -      * checking everywhere.
> -      */
> -     for_each_intel_crtc(dev, crtc) {
> -             if (crtc->active && i915.fastboot) {
> -                     intel_mode_from_pipe_config(&crtc->base.mode,
> -                                                 crtc->config);
> -                     DRM_DEBUG_KMS("[CRTC:%d] found active mode: ",
> -                                   crtc->base.base.id);
> -                     drm_mode_debug_printmodeline(&crtc->base.mode);
> -             }
> +     state = intel_modeset_readout_hw_state(dev);
> +     if (IS_ERR(state)) {
> +             DRM_ERROR("Failed to read out hw state\n");
> +             return;
>       }
>  
> +     drm_atomic_helper_swap_state(dev, state);
> +
> +     /* swap sw/hw dpll state */
> +     intel_atomic_duplicate_dpll_state(dev_priv, shared_dplls);
> +     intel_shared_dpll_commit(state);
> +     memcpy(to_intel_atomic_state(state)->shared_dpll,
> +            shared_dplls, sizeof(*shared_dplls) * dev_priv->num_shared_dpll);
> +
>       /* HW state is read out, now we need to sanitize this mess. */
>       for_each_intel_encoder(dev, encoder) {
>               intel_sanitize_encoder(encoder);
>       }
>  
> -     for_each_pipe(dev_priv, pipe) {
> -             crtc = to_intel_crtc(dev_priv->pipe_to_crtc_mapping[pipe]);
> -             intel_sanitize_crtc(crtc);
> -             intel_dump_pipe_config(crtc, crtc->config,
> +     for_each_crtc_in_state(state, crtc, crtc_state, i) {
> +             struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
> +
> +             /* prevent unnneeded restores with force_restore */
> +             crtc_state->active_changed =
> +             crtc_state->mode_changed =
> +             crtc_state->planes_changed = false;
> +
> +             if (crtc->enabled) {
> +                     intel_mode_from_pipe_config(&crtc->state->mode,
> +                             to_intel_crtc_state(crtc->state));
> +
> +                     drm_mode_copy(&crtc->mode, &crtc->state->mode);
> +                     drm_mode_copy(&crtc->hwmode,
> +                                   &crtc->state->adjusted_mode);
> +             }
> +
> +             intel_sanitize_crtc(intel_crtc);
> +
> +             /*
> +              * sanitize_crtc may have forced an update of crtc->state,
> +              * so reload in intel_dump_pipe_config
> +              */
> +             intel_dump_pipe_config(intel_crtc,
> +                                    to_intel_crtc_state(crtc->state),
>                                      "[setup_hw_state]");
>       }
>  
> @@ -14707,20 +14809,17 @@ void intel_modeset_setup_hw_state(struct drm_device 
> *dev,
>               ilk_wm_get_hw_state(dev);
>  
>       if (force_restore) {
> -             i915_redisable_vga(dev);
> +             int ret;
>  
> -             /*
> -              * We need to use raw interfaces for restoring state to avoid
> -              * checking (bogus) intermediate states.
> -              */
> -             for_each_pipe(dev_priv, pipe) {
> -                     struct drm_crtc *crtc =
> -                             dev_priv->pipe_to_crtc_mapping[pipe];
> +             i915_redisable_vga(dev);
>  
> -                     intel_crtc_restore_mode(crtc);
> +             ret = intel_set_mode(state);
> +             if (ret) {
> +                     DRM_ERROR("Failed to restore previous mode\n");
> +                     drm_atomic_state_free(state);
>               }
>       } else {
> -             intel_modeset_update_staged_output_state(dev);
> +             drm_atomic_state_free(state);
>       }
>  
>       intel_modeset_check_state(dev);
> diff --git a/drivers/gpu/drm/i915/intel_drv.h 
> b/drivers/gpu/drm/i915/intel_drv.h
> index 7012c67de8d5..65f5f3d41b5a 100644
> --- a/drivers/gpu/drm/i915/intel_drv.h
> +++ b/drivers/gpu/drm/i915/intel_drv.h
> @@ -130,11 +130,6 @@ struct intel_fbdev {
>  
>  struct intel_encoder {
>       struct drm_encoder base;
> -     /*
> -      * The new crtc this encoder will be driven from. Only differs from
> -      * base->crtc while a modeset is in progress.
> -      */
> -     struct intel_crtc *new_crtc;
>  
>       enum intel_output_type type;
>       unsigned int cloneable;
> @@ -195,12 +190,6 @@ struct intel_connector {
>        */
>       struct intel_encoder *encoder;
>  
> -     /*
> -      * The new encoder this connector will be driven. Only differs from
> -      * encoder while a modeset is in progress.
> -      */
> -     struct intel_encoder *new_encoder;
> -
>       /* Reads out the current hw, returning true if the connector is enabled
>        * and active (i.e. dpms ON state). */
>       bool (*get_hw_state)(struct intel_connector *);
> @@ -534,7 +523,6 @@ struct intel_crtc {
>  
>       struct intel_initial_plane_config plane_config;
>       struct intel_crtc_state *config;
> -     bool new_enabled;
>  
>       /* reset counter value when the last flip was submitted */
>       unsigned int reset_counter;
> @@ -1414,6 +1402,8 @@ struct drm_atomic_state 
> *intel_atomic_state_alloc(struct drm_device *dev);
>  void intel_atomic_state_clear(struct drm_atomic_state *);
>  struct intel_shared_dpll_config *
>  intel_atomic_get_shared_dpll_state(struct drm_atomic_state *s);
> +void intel_atomic_duplicate_dpll_state(struct drm_i915_private *,
> +                                    struct intel_shared_dpll_config *);
>  
>  static inline struct intel_crtc_state *
>  intel_atomic_get_crtc_state(struct drm_atomic_state *state,
> -- 
> 2.1.0
> 
> _______________________________________________
> Intel-gfx mailing list
> Intel-gfx@lists.freedesktop.org
> http://lists.freedesktop.org/mailman/listinfo/intel-gfx

-- 
Matt Roper
Graphics Software Engineer
IoTG Platform Enabling & Development
Intel Corporation
(916) 356-2795
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