drm/i915: Use drm_atomic_helper_update_legacy_modeset_state, v2.

Now that the helper is exported there's no need to duplicate
this code any more.

Changes since v1:
- move intel_modeset_update_staged_output_state call to the right place.

Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Reviewed-by: Matt Roper <matthew.d.roper@intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>

1 files changed, 4 insertions, 57 deletions

diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index aab75d3b7d20..c1042ea50136 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -11737,43 +11737,6 @@ static void intel_modeset_update_connector_atomic_state(struct drm_device *dev)
         }
 }
 
-/* Fixup legacy state after an atomic state swap.
- */
-static void intel_modeset_fixup_state(struct drm_atomic_state *state)
-{
-        struct intel_crtc *crtc;
-        struct intel_encoder *encoder;
-        struct intel_connector *connector;
-
-        for_each_intel_connector(state->dev, connector) {
-                connector->base.encoder = connector->base.state->best_encoder;
-                if (connector->base.encoder)
-                        connector->base.encoder->crtc =
-                                connector->base.state->crtc;
-        }
-
-        /* Update crtc of disabled encoders */
-        for_each_intel_encoder(state->dev, encoder) {
-                int num_connectors = 0;
-
-                for_each_intel_connector(state->dev, connector)
-                        if (connector->base.encoder == &encoder->base)
-                                num_connectors++;
-
-                if (num_connectors == 0)
-                        encoder->base.crtc = NULL;
-        }
-
-        for_each_intel_crtc(state->dev, crtc) {
-                crtc->base.enabled = crtc->base.state->enable;
-                crtc->config = to_intel_crtc_state(crtc->base.state);
-        }
-
-        /* Copy the new configuration to the staged state, to keep the few
-         * pieces of code that haven't been converted yet happy */
-        intel_modeset_update_staged_output_state(state->dev);
-}
-
 static void
 connected_sink_compute_bpp(struct intel_connector *connector,
                            struct intel_crtc_state *pipe_config)
@@ -12261,11 +12224,14 @@ intel_modeset_update_state(struct drm_atomic_state *state)
                 intel_encoder->connectors_active = false;
         }
 
-        intel_modeset_fixup_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) {
                 WARN_ON(crtc->state->enable != intel_crtc_in_use(crtc));
+
+                to_intel_crtc(crtc)->config = to_intel_crtc_state(crtc->state);
         }
 
         list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
@@ -12972,25 +12938,6 @@ static int __intel_set_mode(struct drm_crtc *modeset_crtc,
                         drm_plane_helper_disable(crtc->primary);
         }
 
-        /* crtc->mode is already used by the ->mode_set callbacks, hence we need
-         * to set it here already despite that we pass it down the callchain.
-         *
-         * Note we'll need to fix this up when we start tracking multiple
-         * pipes; here we assume a single modeset_pipe and only track the
-         * single crtc and mode.
-         */
-        if (pipe_config->base.enable && needs_modeset(&pipe_config->base)) {
-                modeset_crtc->mode = pipe_config->base.mode;
-
-                /*
-                 * Calculate and store various constants which
-                 * are later needed by vblank and swap-completion
-                 * timestamping. They are derived from true hwmode.
-                 */
-                drm_calc_timestamping_constants(modeset_crtc,
-                                                &pipe_config->base.adjusted_mode);
-        }
-
         /* Only after disabling all output pipelines that will be changed can we
          * update the the output configuration. */
         intel_modeset_update_state(state);