drm/i915: Use atomic state in intel_fb_initial_config.

This is another step in removing legacy state.
Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1455697119-31416-6-git-send-email-maarten.lankhorst@linux.intel.com

drivers/gpu/drm/i915/intel_fbdev.c

@@ -406,8 +406,8 @@ static bool intel_fb_initial_config(struct drm_fb_helper *fb_helper,
 			continue;
 		}
 
-		encoder = connector->encoder;
-		if (!encoder || WARN_ON(!encoder->crtc)) {
+		encoder = connector->state->best_encoder;
+		if (!encoder || WARN_ON(!connector->state->crtc)) {
 			if (connector->force > DRM_FORCE_OFF)
 				goto bail;
 
@@ -420,7 +420,7 @@ static bool intel_fb_initial_config(struct drm_fb_helper *fb_helper,
 
 		num_connectors_enabled++;
 
-		new_crtc = intel_fb_helper_crtc(fb_helper, encoder->crtc);
+		new_crtc = intel_fb_helper_crtc(fb_helper, connector->state->crtc);
 
 		/*
 		 * Make sure we're not trying to drive multiple connectors
@@ -466,17 +466,22 @@ static bool intel_fb_initial_config(struct drm_fb_helper *fb_helper,
 			 * usually contains. But since our current
 			 * code puts a mode derived from the post-pfit timings
 			 * into crtc->mode this works out correctly.
+			 *
+			 * This is crtc->mode and not crtc->state->mode for the
+			 * fastboot check to work correctly. crtc_state->mode has
+			 * I915_MODE_FLAG_INHERITED, which we clear to force check
+			 * state.
 			 */
 			DRM_DEBUG_KMS("looking for current mode on connector %s\n",
 				      connector->name);
-			modes[i] = &encoder->crtc->mode;
+			modes[i] = &connector->state->crtc->mode;
 		}
 		crtcs[i] = new_crtc;
 
 		DRM_DEBUG_KMS("connector %s on pipe %c [CRTC:%d]: %dx%d%s\n",
 			      connector->name,
-			      pipe_name(to_intel_crtc(encoder->crtc)->pipe),
-			      encoder->crtc->base.id,
+			      pipe_name(to_intel_crtc(connector->state->crtc)->pipe),
+			      connector->state->crtc->base.id,
 			      modes[i]->hdisplay, modes[i]->vdisplay,
 			      modes[i]->flags & DRM_MODE_FLAG_INTERLACE ? "i" :"");