diff --git a/drivers/gpu/drm/i915/Makefile b/drivers/gpu/drm/i915/Makefile
index 37a8ea56f7d6..c84a9cd8440d 100644
--- a/drivers/gpu/drm/i915/Makefile
+++ b/drivers/gpu/drm/i915/Makefile
@@ -244,6 +244,7 @@ i915-y += \
 	display/intel_hotplug.o \
 	display/intel_lpe_audio.o \
 	display/intel_modeset_verify.o \
+	display/intel_modeset_setup.o \
 	display/intel_overlay.o \
 	display/intel_pch_display.o \
 	display/intel_pch_refclk.o \
diff --git a/drivers/gpu/drm/i915/display/intel_display.c b/drivers/gpu/drm/i915/display/intel_display.c
index 3e014bd08188..a80dd408210a 100644
--- a/drivers/gpu/drm/i915/display/intel_display.c
+++ b/drivers/gpu/drm/i915/display/intel_display.c
@@ -101,6 +101,7 @@
 #include "intel_hdcp.h"
 #include "intel_hotplug.h"
 #include "intel_modeset_verify.h"
+#include "intel_modeset_setup.h"
 #include "intel_overlay.h"
 #include "intel_panel.h"
 #include "intel_pch_display.h"
@@ -130,8 +131,6 @@ static void ilk_set_pipeconf(const struct intel_crtc_state *crtc_state);
 static void hsw_set_transconf(const struct intel_crtc_state *crtc_state);
 static void bdw_set_pipemisc(const struct intel_crtc_state *crtc_state);
 static void ilk_pfit_enable(const struct intel_crtc_state *crtc_state);
-static void intel_modeset_setup_hw_state(struct drm_device *dev,
-					 struct drm_modeset_acquire_ctx *ctx);
 
 /**
  * intel_update_watermarks - update FIFO watermark values based on current modes
@@ -166,7 +165,7 @@ static void intel_modeset_setup_hw_state(struct drm_device *dev,
  * We don't use the sprite, so we can ignore that.  And on Crestline we have
  * to set the non-SR watermarks to 8.
  */
-static void intel_update_watermarks(struct drm_i915_private *dev_priv)
+void intel_update_watermarks(struct drm_i915_private *dev_priv)
 {
 	if (dev_priv->wm_disp->update_wm)
 		dev_priv->wm_disp->update_wm(dev_priv);
@@ -733,10 +732,9 @@ u32 intel_plane_fb_max_stride(struct drm_i915_private *dev_priv,
 				 DRM_MODE_ROTATE_0);
 }
 
-static void
-intel_set_plane_visible(struct intel_crtc_state *crtc_state,
-			struct intel_plane_state *plane_state,
-			bool visible)
+void intel_set_plane_visible(struct intel_crtc_state *crtc_state,
+			     struct intel_plane_state *plane_state,
+			     bool visible)
 {
 	struct intel_plane *plane = to_intel_plane(plane_state->uapi.plane);
 
@@ -748,7 +746,7 @@ intel_set_plane_visible(struct intel_crtc_state *crtc_state,
 		crtc_state->uapi.plane_mask &= ~drm_plane_mask(&plane->base);
 }
 
-static void fixup_plane_bitmasks(struct intel_crtc_state *crtc_state)
+void intel_plane_fixup_bitmasks(struct intel_crtc_state *crtc_state)
 {
 	struct drm_i915_private *dev_priv = to_i915(crtc_state->uapi.crtc->dev);
 	struct drm_plane *plane;
@@ -783,7 +781,7 @@ void intel_plane_disable_noatomic(struct intel_crtc *crtc,
 		    crtc->base.base.id, crtc->base.name);
 
 	intel_set_plane_visible(crtc_state, plane_state, false);
-	fixup_plane_bitmasks(crtc_state);
+	intel_plane_fixup_bitmasks(crtc_state);
 	crtc_state->data_rate[plane->id] = 0;
 	crtc_state->data_rate_y[plane->id] = 0;
 	crtc_state->rel_data_rate[plane->id] = 0;
@@ -2209,9 +2207,8 @@ static void get_crtc_power_domains(struct intel_crtc_state *crtc_state,
 		set_bit(intel_dsc_power_domain(crtc, cpu_transcoder), mask->bits);
 }
 
-static void
-modeset_get_crtc_power_domains(struct intel_crtc_state *crtc_state,
-			       struct intel_power_domain_mask *old_domains)
+void intel_modeset_get_crtc_power_domains(struct intel_crtc_state *crtc_state,
+					  struct intel_power_domain_mask *old_domains)
 {
 	struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
 	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
@@ -2235,8 +2232,8 @@ modeset_get_crtc_power_domains(struct intel_crtc_state *crtc_state,
 					       domain);
 }
 
-static void modeset_put_crtc_power_domains(struct intel_crtc *crtc,
-					   struct intel_power_domain_mask *domains)
+void intel_modeset_put_crtc_power_domains(struct intel_crtc *crtc,
+					  struct intel_power_domain_mask *domains)
 {
 	intel_display_power_put_mask_in_set(to_i915(crtc->base.dev),
 					    &crtc->enabled_power_domains,
@@ -2416,89 +2413,6 @@ static void i9xx_crtc_disable(struct intel_atomic_state *state,
 		i830_enable_pipe(dev_priv, pipe);
 }
 
-static void intel_crtc_disable_noatomic(struct intel_crtc *crtc,
-					struct drm_modeset_acquire_ctx *ctx)
-{
-	struct intel_encoder *encoder;
-	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
-	struct intel_bw_state *bw_state =
-		to_intel_bw_state(dev_priv->bw_obj.state);
-	struct intel_cdclk_state *cdclk_state =
-		to_intel_cdclk_state(dev_priv->cdclk.obj.state);
-	struct intel_dbuf_state *dbuf_state =
-		to_intel_dbuf_state(dev_priv->dbuf.obj.state);
-	struct intel_crtc_state *crtc_state =
-		to_intel_crtc_state(crtc->base.state);
-	struct intel_plane *plane;
-	struct drm_atomic_state *state;
-	struct intel_crtc_state *temp_crtc_state;
-	enum pipe pipe = crtc->pipe;
-	int ret;
-
-	if (!crtc_state->hw.active)
-		return;
-
-	for_each_intel_plane_on_crtc(&dev_priv->drm, crtc, plane) {
-		const struct intel_plane_state *plane_state =
-			to_intel_plane_state(plane->base.state);
-
-		if (plane_state->uapi.visible)
-			intel_plane_disable_noatomic(crtc, plane);
-	}
-
-	state = drm_atomic_state_alloc(&dev_priv->drm);
-	if (!state) {
-		drm_dbg_kms(&dev_priv->drm,
-			    "failed to disable [CRTC:%d:%s], out of memory",
-			    crtc->base.base.id, crtc->base.name);
-		return;
-	}
-
-	state->acquire_ctx = ctx;
-
-	/* Everything's already locked, -EDEADLK can't happen. */
-	temp_crtc_state = intel_atomic_get_crtc_state(state, crtc);
-	ret = drm_atomic_add_affected_connectors(state, &crtc->base);
-
-	drm_WARN_ON(&dev_priv->drm, IS_ERR(temp_crtc_state) || ret);
-
-	dev_priv->display->crtc_disable(to_intel_atomic_state(state), crtc);
-
-	drm_atomic_state_put(state);
-
-	drm_dbg_kms(&dev_priv->drm,
-		    "[CRTC:%d:%s] hw state adjusted, was enabled, now disabled\n",
-		    crtc->base.base.id, crtc->base.name);
-
-	crtc->active = false;
-	crtc->base.enabled = false;
-
-	drm_WARN_ON(&dev_priv->drm,
-		    drm_atomic_set_mode_for_crtc(&crtc_state->uapi, NULL) < 0);
-	crtc_state->uapi.active = false;
-	crtc_state->uapi.connector_mask = 0;
-	crtc_state->uapi.encoder_mask = 0;
-	intel_crtc_free_hw_state(crtc_state);
-	memset(&crtc_state->hw, 0, sizeof(crtc_state->hw));
-
-	for_each_encoder_on_crtc(&dev_priv->drm, &crtc->base, encoder)
-		encoder->base.crtc = NULL;
-
-	intel_fbc_disable(crtc);
-	intel_update_watermarks(dev_priv);
-	intel_disable_shared_dpll(crtc_state);
-
-	intel_display_power_put_all_in_set(dev_priv, &crtc->enabled_power_domains);
-
-	cdclk_state->min_cdclk[pipe] = 0;
-	cdclk_state->min_voltage_level[pipe] = 0;
-	cdclk_state->active_pipes &= ~BIT(pipe);
-
-	dbuf_state->active_pipes &= ~BIT(pipe);
-
-	bw_state->data_rate[pipe] = 0;
-	bw_state->num_active_planes[pipe] = 0;
-}
 
 /*
  * turn all crtc's off, but do not adjust state
@@ -4948,39 +4862,6 @@ static int intel_crtc_atomic_check(struct intel_atomic_state *state,
 	return 0;
 }
 
-static void intel_modeset_update_connector_atomic_state(struct drm_device *dev)
-{
-	struct intel_connector *connector;
-	struct drm_connector_list_iter conn_iter;
-
-	drm_connector_list_iter_begin(dev, &conn_iter);
-	for_each_intel_connector_iter(connector, &conn_iter) {
-		struct drm_connector_state *conn_state = connector->base.state;
-		struct intel_encoder *encoder =
-			to_intel_encoder(connector->base.encoder);
-
-		if (conn_state->crtc)
-			drm_connector_put(&connector->base);
-
-		if (encoder) {
-			struct intel_crtc *crtc =
-				to_intel_crtc(encoder->base.crtc);
-			const struct intel_crtc_state *crtc_state =
-				to_intel_crtc_state(crtc->base.state);
-
-			conn_state->best_encoder = &encoder->base;
-			conn_state->crtc = &crtc->base;
-			conn_state->max_bpc = (crtc_state->pipe_bpp ?: 24) / 3;
-
-			drm_connector_get(&connector->base);
-		} else {
-			conn_state->best_encoder = NULL;
-			conn_state->crtc = NULL;
-		}
-	}
-	drm_connector_list_iter_end(&conn_iter);
-}
-
 static int
 compute_sink_pipe_bpp(const struct drm_connector_state *conn_state,
 		      struct intel_crtc_state *crtc_state)
@@ -5165,27 +5046,6 @@ intel_crtc_copy_uapi_to_hw_state_modeset(struct intel_atomic_state *state,
 	intel_crtc_copy_uapi_to_hw_state_nomodeset(state, crtc);
 }
 
-static void intel_crtc_copy_hw_to_uapi_state(struct intel_crtc_state *crtc_state)
-{
-	if (intel_crtc_is_bigjoiner_slave(crtc_state))
-		return;
-
-	crtc_state->uapi.enable = crtc_state->hw.enable;
-	crtc_state->uapi.active = crtc_state->hw.active;
-	drm_WARN_ON(crtc_state->uapi.crtc->dev,
-		    drm_atomic_set_mode_for_crtc(&crtc_state->uapi, &crtc_state->hw.mode) < 0);
-
-	crtc_state->uapi.adjusted_mode = crtc_state->hw.adjusted_mode;
-	crtc_state->uapi.scaling_filter = crtc_state->hw.scaling_filter;
-
-	drm_property_replace_blob(&crtc_state->uapi.degamma_lut,
-				  crtc_state->hw.degamma_lut);
-	drm_property_replace_blob(&crtc_state->uapi.gamma_lut,
-				  crtc_state->hw.gamma_lut);
-	drm_property_replace_blob(&crtc_state->uapi.ctm,
-				  crtc_state->hw.ctm);
-}
-
 static void
 copy_bigjoiner_crtc_state_nomodeset(struct intel_atomic_state *state,
 				    struct intel_crtc *slave_crtc)
@@ -6115,8 +5975,7 @@ int intel_modeset_all_pipes(struct intel_atomic_state *state)
 	return 0;
 }
 
-static void
-intel_crtc_update_active_timings(const struct intel_crtc_state *crtc_state)
+void intel_crtc_update_active_timings(const struct intel_crtc_state *crtc_state)
 {
 	struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
 	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
@@ -7670,7 +7529,7 @@ static void intel_atomic_commit_tail(struct intel_atomic_state *state)
 					    new_crtc_state, i) {
 		if (intel_crtc_needs_modeset(new_crtc_state) ||
 		    new_crtc_state->update_pipe) {
-			modeset_get_crtc_power_domains(new_crtc_state, &put_domains[crtc->pipe]);
+			intel_modeset_get_crtc_power_domains(new_crtc_state, &put_domains[crtc->pipe]);
 		}
 	}
 
@@ -7770,7 +7629,7 @@ static void intel_atomic_commit_tail(struct intel_atomic_state *state)
 	for_each_oldnew_intel_crtc_in_state(state, crtc, old_crtc_state, new_crtc_state, i) {
 		intel_post_plane_update(state, crtc);
 
-		modeset_put_crtc_power_domains(crtc, &put_domains[crtc->pipe]);
+		intel_modeset_put_crtc_power_domains(crtc, &put_domains[crtc->pipe]);
 
 		intel_modeset_verify_crtc(crtc, state, old_crtc_state, new_crtc_state);
 
@@ -9060,567 +8919,6 @@ void i830_disable_pipe(struct drm_i915_private *dev_priv, enum pipe pipe)
 	intel_de_posting_read(dev_priv, DPLL(pipe));
 }
 
-static void
-intel_sanitize_plane_mapping(struct drm_i915_private *dev_priv)
-{
-	struct intel_crtc *crtc;
-
-	if (DISPLAY_VER(dev_priv) >= 4)
-		return;
-
-	for_each_intel_crtc(&dev_priv->drm, crtc) {
-		struct intel_plane *plane =
-			to_intel_plane(crtc->base.primary);
-		struct intel_crtc *plane_crtc;
-		enum pipe pipe;
-
-		if (!plane->get_hw_state(plane, &pipe))
-			continue;
-
-		if (pipe == crtc->pipe)
-			continue;
-
-		drm_dbg_kms(&dev_priv->drm,
-			    "[PLANE:%d:%s] attached to the wrong pipe, disabling plane\n",
-			    plane->base.base.id, plane->base.name);
-
-		plane_crtc = intel_crtc_for_pipe(dev_priv, pipe);
-		intel_plane_disable_noatomic(plane_crtc, plane);
-	}
-}
-
-static bool intel_crtc_has_encoders(struct intel_crtc *crtc)
-{
-	struct drm_device *dev = crtc->base.dev;
-	struct intel_encoder *encoder;
-
-	for_each_encoder_on_crtc(dev, &crtc->base, encoder)
-		return true;
-
-	return false;
-}
-
-static struct intel_connector *intel_encoder_find_connector(struct intel_encoder *encoder)
-{
-	struct drm_device *dev = encoder->base.dev;
-	struct intel_connector *connector;
-
-	for_each_connector_on_encoder(dev, &encoder->base, connector)
-		return connector;
-
-	return NULL;
-}
-
-static void intel_sanitize_crtc(struct intel_crtc *crtc,
-				struct drm_modeset_acquire_ctx *ctx)
-{
-	struct drm_device *dev = crtc->base.dev;
-	struct drm_i915_private *dev_priv = to_i915(dev);
-	struct intel_crtc_state *crtc_state = to_intel_crtc_state(crtc->base.state);
-
-	if (crtc_state->hw.active) {
-		struct intel_plane *plane;
-
-		/* Disable everything but the primary plane */
-		for_each_intel_plane_on_crtc(dev, crtc, plane) {
-			const struct intel_plane_state *plane_state =
-				to_intel_plane_state(plane->base.state);
-
-			if (plane_state->uapi.visible &&
-			    plane->base.type != DRM_PLANE_TYPE_PRIMARY)
-				intel_plane_disable_noatomic(crtc, plane);
-		}
-
-		/* Disable any background color/etc. set by the BIOS */
-		intel_color_commit_noarm(crtc_state);
-		intel_color_commit_arm(crtc_state);
-	}
-
-	/* Adjust the state of the output pipe according to whether we
-	 * have active connectors/encoders. */
-	if (crtc_state->hw.active && !intel_crtc_has_encoders(crtc) &&
-	    !intel_crtc_is_bigjoiner_slave(crtc_state))
-		intel_crtc_disable_noatomic(crtc, ctx);
-
-	if (crtc_state->hw.active || HAS_GMCH(dev_priv)) {
-		/*
-		 * We start out with underrun reporting disabled to avoid races.
-		 * For correct bookkeeping mark this on active crtcs.
-		 *
-		 * Also on gmch platforms we dont have any hardware bits to
-		 * disable the underrun reporting. Which means we need to start
-		 * out with underrun reporting disabled also on inactive pipes,
-		 * since otherwise we'll complain about the garbage we read when
-		 * e.g. coming up after runtime pm.
-		 *
-		 * No protection against concurrent access is required - at
-		 * worst a fifo underrun happens which also sets this to false.
-		 */
-		crtc->cpu_fifo_underrun_disabled = true;
-		/*
-		 * We track the PCH trancoder underrun reporting state
-		 * within the crtc. With crtc for pipe A housing the underrun
-		 * reporting state for PCH transcoder A, crtc for pipe B housing
-		 * it for PCH transcoder B, etc. LPT-H has only PCH transcoder A,
-		 * and marking underrun reporting as disabled for the non-existing
-		 * PCH transcoders B and C would prevent enabling the south
-		 * error interrupt (see cpt_can_enable_serr_int()).
-		 */
-		if (intel_has_pch_trancoder(dev_priv, crtc->pipe))
-			crtc->pch_fifo_underrun_disabled = true;
-	}
-}
-
-static bool has_bogus_dpll_config(const struct intel_crtc_state *crtc_state)
-{
-	struct drm_i915_private *dev_priv = to_i915(crtc_state->uapi.crtc->dev);
-
-	/*
-	 * Some SNB BIOSen (eg. ASUS K53SV) are known to misprogram
-	 * the hardware when a high res displays plugged in. DPLL P
-	 * divider is zero, and the pipe timings are bonkers. We'll
-	 * try to disable everything in that case.
-	 *
-	 * FIXME would be nice to be able to sanitize this state
-	 * without several WARNs, but for now let's take the easy
-	 * road.
-	 */
-	return IS_SANDYBRIDGE(dev_priv) &&
-		crtc_state->hw.active &&
-		crtc_state->shared_dpll &&
-		crtc_state->port_clock == 0;
-}
-
-static void intel_sanitize_encoder(struct intel_encoder *encoder)
-{
-	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
-	struct intel_connector *connector;
-	struct intel_crtc *crtc = to_intel_crtc(encoder->base.crtc);
-	struct intel_crtc_state *crtc_state = crtc ?
-		to_intel_crtc_state(crtc->base.state) : NULL;
-
-	/* We need to check both for a crtc link (meaning that the
-	 * encoder is active and trying to read from a pipe) and the
-	 * pipe itself being active. */
-	bool has_active_crtc = crtc_state &&
-		crtc_state->hw.active;
-
-	if (crtc_state && has_bogus_dpll_config(crtc_state)) {
-		drm_dbg_kms(&dev_priv->drm,
-			    "BIOS has misprogrammed the hardware. Disabling pipe %c\n",
-			    pipe_name(crtc->pipe));
-		has_active_crtc = false;
-	}
-
-	connector = intel_encoder_find_connector(encoder);
-	if (connector && !has_active_crtc) {
-		drm_dbg_kms(&dev_priv->drm,
-			    "[ENCODER:%d:%s] has active connectors but no active pipe!\n",
-			    encoder->base.base.id,
-			    encoder->base.name);
-
-		/* Connector is active, but has no active pipe. This is
-		 * fallout from our resume register restoring. Disable
-		 * the encoder manually again. */
-		if (crtc_state) {
-			struct drm_encoder *best_encoder;
-
-			drm_dbg_kms(&dev_priv->drm,
-				    "[ENCODER:%d:%s] manually disabled\n",
-				    encoder->base.base.id,
-				    encoder->base.name);
-
-			/* avoid oopsing in case the hooks consult best_encoder */
-			best_encoder = connector->base.state->best_encoder;
-			connector->base.state->best_encoder = &encoder->base;
-
-			/* FIXME NULL atomic state passed! */
-			if (encoder->disable)
-				encoder->disable(NULL, encoder, crtc_state,
-						 connector->base.state);
-			if (encoder->post_disable)
-				encoder->post_disable(NULL, encoder, crtc_state,
-						      connector->base.state);
-
-			connector->base.state->best_encoder = best_encoder;
-		}
-		encoder->base.crtc = NULL;
-
-		/* Inconsistent output/port/pipe state happens presumably due to
-		 * a bug in one of the get_hw_state functions. Or someplace else
-		 * in our code, like the register restore mess on resume. Clamp
-		 * things to off as a safer default. */
-
-		connector->base.dpms = DRM_MODE_DPMS_OFF;
-		connector->base.encoder = NULL;
-	}
-
-	/* notify opregion of the sanitized encoder state */
-	intel_opregion_notify_encoder(encoder, connector && has_active_crtc);
-
-	if (HAS_DDI(dev_priv))
-		intel_ddi_sanitize_encoder_pll_mapping(encoder);
-}
-
-/* FIXME read out full plane state for all planes */
-static void readout_plane_state(struct drm_i915_private *dev_priv)
-{
-	struct intel_plane *plane;
-	struct intel_crtc *crtc;
-
-	for_each_intel_plane(&dev_priv->drm, plane) {
-		struct intel_plane_state *plane_state =
-			to_intel_plane_state(plane->base.state);
-		struct intel_crtc_state *crtc_state;
-		enum pipe pipe = PIPE_A;
-		bool visible;
-
-		visible = plane->get_hw_state(plane, &pipe);
-
-		crtc = intel_crtc_for_pipe(dev_priv, pipe);
-		crtc_state = to_intel_crtc_state(crtc->base.state);
-
-		intel_set_plane_visible(crtc_state, plane_state, visible);
-
-		drm_dbg_kms(&dev_priv->drm,
-			    "[PLANE:%d:%s] hw state readout: %s, pipe %c\n",
-			    plane->base.base.id, plane->base.name,
-			    str_enabled_disabled(visible), pipe_name(pipe));
-	}
-
-	for_each_intel_crtc(&dev_priv->drm, crtc) {
-		struct intel_crtc_state *crtc_state =
-			to_intel_crtc_state(crtc->base.state);
-
-		fixup_plane_bitmasks(crtc_state);
-	}
-}
-
-static void intel_modeset_readout_hw_state(struct drm_device *dev)
-{
-	struct drm_i915_private *dev_priv = to_i915(dev);
-	struct intel_cdclk_state *cdclk_state =
-		to_intel_cdclk_state(dev_priv->cdclk.obj.state);
-	struct intel_dbuf_state *dbuf_state =
-		to_intel_dbuf_state(dev_priv->dbuf.obj.state);
-	enum pipe pipe;
-	struct intel_crtc *crtc;
-	struct intel_encoder *encoder;
-	struct intel_connector *connector;
-	struct drm_connector_list_iter conn_iter;
-	u8 active_pipes = 0;
-
-	for_each_intel_crtc(dev, crtc) {
-		struct intel_crtc_state *crtc_state =
-			to_intel_crtc_state(crtc->base.state);
-
-		__drm_atomic_helper_crtc_destroy_state(&crtc_state->uapi);
-		intel_crtc_free_hw_state(crtc_state);
-		intel_crtc_state_reset(crtc_state, crtc);
-
-		intel_crtc_get_pipe_config(crtc_state);
-
-		crtc_state->hw.enable = crtc_state->hw.active;
-
-		crtc->base.enabled = crtc_state->hw.enable;
-		crtc->active = crtc_state->hw.active;
-
-		if (crtc_state->hw.active)
-			active_pipes |= BIT(crtc->pipe);
-
-		drm_dbg_kms(&dev_priv->drm,
-			    "[CRTC:%d:%s] hw state readout: %s\n",
-			    crtc->base.base.id, crtc->base.name,
-			    str_enabled_disabled(crtc_state->hw.active));
-	}
-
-	cdclk_state->active_pipes = dbuf_state->active_pipes = active_pipes;
-
-	readout_plane_state(dev_priv);
-
-	for_each_intel_encoder(dev, encoder) {
-		struct intel_crtc_state *crtc_state = NULL;
-
-		pipe = 0;
-
-		if (encoder->get_hw_state(encoder, &pipe)) {
-			crtc = intel_crtc_for_pipe(dev_priv, pipe);
-			crtc_state = to_intel_crtc_state(crtc->base.state);
-
-			encoder->base.crtc = &crtc->base;
-			intel_encoder_get_config(encoder, crtc_state);
-
-			/* read out to slave crtc as well for bigjoiner */
-			if (crtc_state->bigjoiner_pipes) {
-				struct intel_crtc *slave_crtc;
-
-				/* encoder should read be linked to bigjoiner master */
-				WARN_ON(intel_crtc_is_bigjoiner_slave(crtc_state));
-
-				for_each_intel_crtc_in_pipe_mask(&dev_priv->drm, slave_crtc,
-								 intel_crtc_bigjoiner_slave_pipes(crtc_state)) {
-					struct intel_crtc_state *slave_crtc_state;
-
-					slave_crtc_state = to_intel_crtc_state(slave_crtc->base.state);
-					intel_encoder_get_config(encoder, slave_crtc_state);
-				}
-			}
-		} else {
-			encoder->base.crtc = NULL;
-		}
-
-		if (encoder->sync_state)
-			encoder->sync_state(encoder, crtc_state);
-
-		drm_dbg_kms(&dev_priv->drm,
-			    "[ENCODER:%d:%s] hw state readout: %s, pipe %c\n",
-			    encoder->base.base.id, encoder->base.name,
-			    str_enabled_disabled(encoder->base.crtc),
-			    pipe_name(pipe));
-	}
-
-	intel_dpll_readout_hw_state(dev_priv);
-
-	drm_connector_list_iter_begin(dev, &conn_iter);
-	for_each_intel_connector_iter(connector, &conn_iter) {
-		if (connector->get_hw_state(connector)) {
-			struct intel_crtc_state *crtc_state;
-			struct intel_crtc *crtc;
-
-			connector->base.dpms = DRM_MODE_DPMS_ON;
-
-			encoder = intel_attached_encoder(connector);
-			connector->base.encoder = &encoder->base;
-
-			crtc = to_intel_crtc(encoder->base.crtc);
-			crtc_state = crtc ? to_intel_crtc_state(crtc->base.state) : NULL;
-
-			if (crtc_state && crtc_state->hw.active) {
-				/*
-				 * This has to be done during hardware readout
-				 * because anything calling .crtc_disable may
-				 * rely on the connector_mask being accurate.
-				 */
-				crtc_state->uapi.connector_mask |=
-					drm_connector_mask(&connector->base);
-				crtc_state->uapi.encoder_mask |=
-					drm_encoder_mask(&encoder->base);
-			}
-		} else {
-			connector->base.dpms = DRM_MODE_DPMS_OFF;
-			connector->base.encoder = NULL;
-		}
-		drm_dbg_kms(&dev_priv->drm,
-			    "[CONNECTOR:%d:%s] hw state readout: %s\n",
-			    connector->base.base.id, connector->base.name,
-			    str_enabled_disabled(connector->base.encoder));
-	}
-	drm_connector_list_iter_end(&conn_iter);
-
-	for_each_intel_crtc(dev, crtc) {
-		struct intel_bw_state *bw_state =
-			to_intel_bw_state(dev_priv->bw_obj.state);
-		struct intel_crtc_state *crtc_state =
-			to_intel_crtc_state(crtc->base.state);
-		struct intel_plane *plane;
-		int min_cdclk = 0;
-
-		if (crtc_state->hw.active) {
-			/*
-			 * The initial mode needs to be set in order to keep
-			 * the atomic core happy. It wants a valid mode if the
-			 * crtc's enabled, so we do the above call.
-			 *
-			 * But we don't set all the derived state fully, hence
-			 * set a flag to indicate that a full recalculation is
-			 * needed on the next commit.
-			 */
-			crtc_state->inherited = true;
-
-			intel_crtc_update_active_timings(crtc_state);
-
-			intel_crtc_copy_hw_to_uapi_state(crtc_state);
-		}
-
-		for_each_intel_plane_on_crtc(&dev_priv->drm, crtc, plane) {
-			const struct intel_plane_state *plane_state =
-				to_intel_plane_state(plane->base.state);
-
-			/*
-			 * FIXME don't have the fb yet, so can't
-			 * use intel_plane_data_rate() :(
-			 */
-			if (plane_state->uapi.visible)
-				crtc_state->data_rate[plane->id] =
-					4 * crtc_state->pixel_rate;
-			/*
-			 * FIXME don't have the fb yet, so can't
-			 * use plane->min_cdclk() :(
-			 */
-			if (plane_state->uapi.visible && plane->min_cdclk) {
-				if (crtc_state->double_wide || DISPLAY_VER(dev_priv) >= 10)
-					crtc_state->min_cdclk[plane->id] =
-						DIV_ROUND_UP(crtc_state->pixel_rate, 2);
-				else
-					crtc_state->min_cdclk[plane->id] =
-						crtc_state->pixel_rate;
-			}
-			drm_dbg_kms(&dev_priv->drm,
-				    "[PLANE:%d:%s] min_cdclk %d kHz\n",
-				    plane->base.base.id, plane->base.name,
-				    crtc_state->min_cdclk[plane->id]);
-		}
-
-		if (crtc_state->hw.active) {
-			min_cdclk = intel_crtc_compute_min_cdclk(crtc_state);
-			if (drm_WARN_ON(dev, min_cdclk < 0))
-				min_cdclk = 0;
-		}
-
-		cdclk_state->min_cdclk[crtc->pipe] = min_cdclk;
-		cdclk_state->min_voltage_level[crtc->pipe] =
-			crtc_state->min_voltage_level;
-
-		intel_bw_crtc_update(bw_state, crtc_state);
-	}
-}
-
-static void
-get_encoder_power_domains(struct drm_i915_private *dev_priv)
-{
-	struct intel_encoder *encoder;
-
-	for_each_intel_encoder(&dev_priv->drm, encoder) {
-		struct intel_crtc_state *crtc_state;
-
-		if (!encoder->get_power_domains)
-			continue;
-
-		/*
-		 * MST-primary and inactive encoders don't have a crtc state
-		 * and neither of these require any power domain references.
-		 */
-		if (!encoder->base.crtc)
-			continue;
-
-		crtc_state = to_intel_crtc_state(encoder->base.crtc->state);
-		encoder->get_power_domains(encoder, crtc_state);
-	}
-}
-
-static void intel_early_display_was(struct drm_i915_private *dev_priv)
-{
-	/*
-	 * Display WA #1185 WaDisableDARBFClkGating:glk,icl,ehl,tgl
-	 * Also known as Wa_14010480278.
-	 */
-	if (IS_DISPLAY_VER(dev_priv, 10, 12))
-		intel_de_write(dev_priv, GEN9_CLKGATE_DIS_0,
-			       intel_de_read(dev_priv, GEN9_CLKGATE_DIS_0) | DARBF_GATING_DIS);
-
-	if (IS_HASWELL(dev_priv)) {
-		/*
-		 * WaRsPkgCStateDisplayPMReq:hsw
-		 * System hang if this isn't done before disabling all planes!
-		 */
-		intel_de_write(dev_priv, CHICKEN_PAR1_1,
-			       intel_de_read(dev_priv, CHICKEN_PAR1_1) | FORCE_ARB_IDLE_PLANES);
-	}
-
-	if (IS_KABYLAKE(dev_priv) || IS_COFFEELAKE(dev_priv) || IS_COMETLAKE(dev_priv)) {
-		/* Display WA #1142:kbl,cfl,cml */
-		intel_de_rmw(dev_priv, CHICKEN_PAR1_1,
-			     KBL_ARB_FILL_SPARE_22, KBL_ARB_FILL_SPARE_22);
-		intel_de_rmw(dev_priv, CHICKEN_MISC_2,
-			     KBL_ARB_FILL_SPARE_13 | KBL_ARB_FILL_SPARE_14,
-			     KBL_ARB_FILL_SPARE_14);
-	}
-}
-
-
-/* Scan out the current hw modeset state,
- * and sanitizes it to the current state
- */
-static void
-intel_modeset_setup_hw_state(struct drm_device *dev,
-			     struct drm_modeset_acquire_ctx *ctx)
-{
-	struct drm_i915_private *dev_priv = to_i915(dev);
-	struct intel_encoder *encoder;
-	struct intel_crtc *crtc;
-	intel_wakeref_t wakeref;
-
-	wakeref = intel_display_power_get(dev_priv, POWER_DOMAIN_INIT);
-
-	intel_early_display_was(dev_priv);
-	intel_modeset_readout_hw_state(dev);
-
-	/* HW state is read out, now we need to sanitize this mess. */
-	get_encoder_power_domains(dev_priv);
-
-	intel_pch_sanitize(dev_priv);
-
-	/*
-	 * intel_sanitize_plane_mapping() may need to do vblank
-	 * waits, so we need vblank interrupts restored beforehand.
-	 */
-	for_each_intel_crtc(&dev_priv->drm, crtc) {
-		struct intel_crtc_state *crtc_state =
-			to_intel_crtc_state(crtc->base.state);
-
-		drm_crtc_vblank_reset(&crtc->base);
-
-		if (crtc_state->hw.active)
-			intel_crtc_vblank_on(crtc_state);
-	}
-
-	intel_fbc_sanitize(dev_priv);
-
-	intel_sanitize_plane_mapping(dev_priv);
-
-	for_each_intel_encoder(dev, encoder)
-		intel_sanitize_encoder(encoder);
-
-	for_each_intel_crtc(&dev_priv->drm, crtc) {
-		struct intel_crtc_state *crtc_state =
-			to_intel_crtc_state(crtc->base.state);
-
-		intel_sanitize_crtc(crtc, ctx);
-		intel_crtc_state_dump(crtc_state, NULL, "setup_hw_state");
-	}
-
-	intel_modeset_update_connector_atomic_state(dev);
-
-	intel_dpll_sanitize_state(dev_priv);
-
-	if (IS_G4X(dev_priv)) {
-		g4x_wm_get_hw_state(dev_priv);
-		g4x_wm_sanitize(dev_priv);
-	} else if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv)) {
-		vlv_wm_get_hw_state(dev_priv);
-		vlv_wm_sanitize(dev_priv);
-	} else if (DISPLAY_VER(dev_priv) >= 9) {
-		skl_wm_get_hw_state(dev_priv);
-		skl_wm_sanitize(dev_priv);
-	} else if (HAS_PCH_SPLIT(dev_priv)) {
-		ilk_wm_get_hw_state(dev_priv);
-	}
-
-	for_each_intel_crtc(dev, crtc) {
-		struct intel_crtc_state *crtc_state =
-			to_intel_crtc_state(crtc->base.state);
-		struct intel_power_domain_mask put_domains;
-
-		modeset_get_crtc_power_domains(crtc_state, &put_domains);
-		if (drm_WARN_ON(dev, !bitmap_empty(put_domains.bits, POWER_DOMAIN_NUM)))
-			modeset_put_crtc_power_domains(crtc, &put_domains);
-	}
-
-	intel_display_power_put(dev_priv, POWER_DOMAIN_INIT, wakeref);
-
-	intel_power_domains_sanitize_state(dev_priv);
-}
-
 void intel_display_resume(struct drm_device *dev)
 {
 	struct drm_i915_private *dev_priv = to_i915(dev);
diff --git a/drivers/gpu/drm/i915/display/intel_display.h b/drivers/gpu/drm/i915/display/intel_display.h
index 2feb8ae5d5d4..8610e17cc593 100644
--- a/drivers/gpu/drm/i915/display/intel_display.h
+++ b/drivers/gpu/drm/i915/display/intel_display.h
@@ -56,6 +56,7 @@ struct intel_initial_plane_config;
 struct intel_load_detect_pipe;
 struct intel_plane;
 struct intel_plane_state;
+struct intel_power_domain_mask;
 struct intel_remapped_info;
 struct intel_rotation_info;
 struct pci_dev;
@@ -563,6 +564,7 @@ bool intel_crtc_get_pipe_config(struct intel_crtc_state *crtc_state);
 bool intel_pipe_config_compare(const struct intel_crtc_state *current_config,
 			       const struct intel_crtc_state *pipe_config,
 			       bool fastset);
+void intel_crtc_update_active_timings(const struct intel_crtc_state *crtc_state);
 
 void intel_plane_destroy(struct drm_plane *plane);
 void intel_enable_transcoder(const struct intel_crtc_state *new_crtc_state);
@@ -659,10 +661,16 @@ intel_get_crtc_new_encoder(const struct intel_atomic_state *state,
 			   const struct intel_crtc_state *crtc_state);
 void intel_plane_disable_noatomic(struct intel_crtc *crtc,
 				  struct intel_plane *plane);
+void intel_set_plane_visible(struct intel_crtc_state *crtc_state,
+			     struct intel_plane_state *plane_state,
+			     bool visible);
+void intel_plane_fixup_bitmasks(struct intel_crtc_state *crtc_state);
 
 void intel_display_driver_register(struct drm_i915_private *i915);
 void intel_display_driver_unregister(struct drm_i915_private *i915);
 
+void intel_update_watermarks(struct drm_i915_private *i915);
+
 /* modesetting */
 bool intel_modeset_probe_defer(struct pci_dev *pdev);
 void intel_modeset_init_hw(struct drm_i915_private *i915);
@@ -674,6 +682,10 @@ void intel_modeset_driver_remove_noirq(struct drm_i915_private *i915);
 void intel_modeset_driver_remove_nogem(struct drm_i915_private *i915);
 void intel_display_resume(struct drm_device *dev);
 int intel_modeset_all_pipes(struct intel_atomic_state *state);
+void intel_modeset_get_crtc_power_domains(struct intel_crtc_state *crtc_state,
+					  struct intel_power_domain_mask *old_domains);
+void intel_modeset_put_crtc_power_domains(struct intel_crtc *crtc,
+					  struct intel_power_domain_mask *domains);
 
 /* modesetting asserts */
 void assert_transcoder(struct drm_i915_private *dev_priv,
diff --git a/drivers/gpu/drm/i915/display/intel_modeset_setup.c b/drivers/gpu/drm/i915/display/intel_modeset_setup.c
new file mode 100644
index 000000000000..75aa314279c9
--- /dev/null
+++ b/drivers/gpu/drm/i915/display/intel_modeset_setup.c
@@ -0,0 +1,727 @@
+// SPDX-License-Identifier: MIT
+/*
+ * Copyright © 2022 Intel Corporation
+ *
+ * Read out the current hardware modeset state, and sanitize it to the current
+ * state.
+ */
+
+#include <drm/drm_atomic_uapi.h>
+#include <drm/drm_atomic_state_helper.h>
+
+#include "i915_drv.h"
+#include "intel_atomic.h"
+#include "intel_bw.h"
+#include "intel_color.h"
+#include "intel_crtc.h"
+#include "intel_crtc_state_dump.h"
+#include "intel_ddi.h"
+#include "intel_de.h"
+#include "intel_display.h"
+#include "intel_display_power.h"
+#include "intel_display_types.h"
+#include "intel_modeset_setup.h"
+#include "intel_pch_display.h"
+#include "intel_pm.h"
+
+static void intel_crtc_disable_noatomic(struct intel_crtc *crtc,
+					struct drm_modeset_acquire_ctx *ctx)
+{
+	struct intel_encoder *encoder;
+	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
+	struct intel_bw_state *bw_state =
+		to_intel_bw_state(dev_priv->bw_obj.state);
+	struct intel_cdclk_state *cdclk_state =
+		to_intel_cdclk_state(dev_priv->cdclk.obj.state);
+	struct intel_dbuf_state *dbuf_state =
+		to_intel_dbuf_state(dev_priv->dbuf.obj.state);
+	struct intel_crtc_state *crtc_state =
+		to_intel_crtc_state(crtc->base.state);
+	struct intel_plane *plane;
+	struct drm_atomic_state *state;
+	struct intel_crtc_state *temp_crtc_state;
+	enum pipe pipe = crtc->pipe;
+	int ret;
+
+	if (!crtc_state->hw.active)
+		return;
+
+	for_each_intel_plane_on_crtc(&dev_priv->drm, crtc, plane) {
+		const struct intel_plane_state *plane_state =
+			to_intel_plane_state(plane->base.state);
+
+		if (plane_state->uapi.visible)
+			intel_plane_disable_noatomic(crtc, plane);
+	}
+
+	state = drm_atomic_state_alloc(&dev_priv->drm);
+	if (!state) {
+		drm_dbg_kms(&dev_priv->drm,
+			    "failed to disable [CRTC:%d:%s], out of memory",
+			    crtc->base.base.id, crtc->base.name);
+		return;
+	}
+
+	state->acquire_ctx = ctx;
+
+	/* Everything's already locked, -EDEADLK can't happen. */
+	temp_crtc_state = intel_atomic_get_crtc_state(state, crtc);
+	ret = drm_atomic_add_affected_connectors(state, &crtc->base);
+
+	drm_WARN_ON(&dev_priv->drm, IS_ERR(temp_crtc_state) || ret);
+
+	dev_priv->display->crtc_disable(to_intel_atomic_state(state), crtc);
+
+	drm_atomic_state_put(state);
+
+	drm_dbg_kms(&dev_priv->drm,
+		    "[CRTC:%d:%s] hw state adjusted, was enabled, now disabled\n",
+		    crtc->base.base.id, crtc->base.name);
+
+	crtc->active = false;
+	crtc->base.enabled = false;
+
+	drm_WARN_ON(&dev_priv->drm,
+		    drm_atomic_set_mode_for_crtc(&crtc_state->uapi, NULL) < 0);
+	crtc_state->uapi.active = false;
+	crtc_state->uapi.connector_mask = 0;
+	crtc_state->uapi.encoder_mask = 0;
+	intel_crtc_free_hw_state(crtc_state);
+	memset(&crtc_state->hw, 0, sizeof(crtc_state->hw));
+
+	for_each_encoder_on_crtc(&dev_priv->drm, &crtc->base, encoder)
+		encoder->base.crtc = NULL;
+
+	intel_fbc_disable(crtc);
+	intel_update_watermarks(dev_priv);
+	intel_disable_shared_dpll(crtc_state);
+
+	intel_display_power_put_all_in_set(dev_priv, &crtc->enabled_power_domains);
+
+	cdclk_state->min_cdclk[pipe] = 0;
+	cdclk_state->min_voltage_level[pipe] = 0;
+	cdclk_state->active_pipes &= ~BIT(pipe);
+
+	dbuf_state->active_pipes &= ~BIT(pipe);
+
+	bw_state->data_rate[pipe] = 0;
+	bw_state->num_active_planes[pipe] = 0;
+}
+
+static void intel_modeset_update_connector_atomic_state(struct drm_device *dev)
+{
+	struct intel_connector *connector;
+	struct drm_connector_list_iter conn_iter;
+
+	drm_connector_list_iter_begin(dev, &conn_iter);
+	for_each_intel_connector_iter(connector, &conn_iter) {
+		struct drm_connector_state *conn_state = connector->base.state;
+		struct intel_encoder *encoder =
+			to_intel_encoder(connector->base.encoder);
+
+		if (conn_state->crtc)
+			drm_connector_put(&connector->base);
+
+		if (encoder) {
+			struct intel_crtc *crtc =
+				to_intel_crtc(encoder->base.crtc);
+			const struct intel_crtc_state *crtc_state =
+				to_intel_crtc_state(crtc->base.state);
+
+			conn_state->best_encoder = &encoder->base;
+			conn_state->crtc = &crtc->base;
+			conn_state->max_bpc = (crtc_state->pipe_bpp ?: 24) / 3;
+
+			drm_connector_get(&connector->base);
+		} else {
+			conn_state->best_encoder = NULL;
+			conn_state->crtc = NULL;
+		}
+	}
+	drm_connector_list_iter_end(&conn_iter);
+}
+
+static void intel_crtc_copy_hw_to_uapi_state(struct intel_crtc_state *crtc_state)
+{
+	if (intel_crtc_is_bigjoiner_slave(crtc_state))
+		return;
+
+	crtc_state->uapi.enable = crtc_state->hw.enable;
+	crtc_state->uapi.active = crtc_state->hw.active;
+	drm_WARN_ON(crtc_state->uapi.crtc->dev,
+		    drm_atomic_set_mode_for_crtc(&crtc_state->uapi, &crtc_state->hw.mode) < 0);
+
+	crtc_state->uapi.adjusted_mode = crtc_state->hw.adjusted_mode;
+	crtc_state->uapi.scaling_filter = crtc_state->hw.scaling_filter;
+
+	drm_property_replace_blob(&crtc_state->uapi.degamma_lut,
+				  crtc_state->hw.degamma_lut);
+	drm_property_replace_blob(&crtc_state->uapi.gamma_lut,
+				  crtc_state->hw.gamma_lut);
+	drm_property_replace_blob(&crtc_state->uapi.ctm,
+				  crtc_state->hw.ctm);
+}
+
+static void
+intel_sanitize_plane_mapping(struct drm_i915_private *dev_priv)
+{
+	struct intel_crtc *crtc;
+
+	if (DISPLAY_VER(dev_priv) >= 4)
+		return;
+
+	for_each_intel_crtc(&dev_priv->drm, crtc) {
+		struct intel_plane *plane =
+			to_intel_plane(crtc->base.primary);
+		struct intel_crtc *plane_crtc;
+		enum pipe pipe;
+
+		if (!plane->get_hw_state(plane, &pipe))
+			continue;
+
+		if (pipe == crtc->pipe)
+			continue;
+
+		drm_dbg_kms(&dev_priv->drm,
+			    "[PLANE:%d:%s] attached to the wrong pipe, disabling plane\n",
+			    plane->base.base.id, plane->base.name);
+
+		plane_crtc = intel_crtc_for_pipe(dev_priv, pipe);
+		intel_plane_disable_noatomic(plane_crtc, plane);
+	}
+}
+
+static bool intel_crtc_has_encoders(struct intel_crtc *crtc)
+{
+	struct drm_device *dev = crtc->base.dev;
+	struct intel_encoder *encoder;
+
+	for_each_encoder_on_crtc(dev, &crtc->base, encoder)
+		return true;
+
+	return false;
+}
+
+static struct intel_connector *intel_encoder_find_connector(struct intel_encoder *encoder)
+{
+	struct drm_device *dev = encoder->base.dev;
+	struct intel_connector *connector;
+
+	for_each_connector_on_encoder(dev, &encoder->base, connector)
+		return connector;
+
+	return NULL;
+}
+
+static void intel_sanitize_crtc(struct intel_crtc *crtc,
+				struct drm_modeset_acquire_ctx *ctx)
+{
+	struct drm_device *dev = crtc->base.dev;
+	struct drm_i915_private *dev_priv = to_i915(dev);
+	struct intel_crtc_state *crtc_state = to_intel_crtc_state(crtc->base.state);
+
+	if (crtc_state->hw.active) {
+		struct intel_plane *plane;
+
+		/* Disable everything but the primary plane */
+		for_each_intel_plane_on_crtc(dev, crtc, plane) {
+			const struct intel_plane_state *plane_state =
+				to_intel_plane_state(plane->base.state);
+
+			if (plane_state->uapi.visible &&
+			    plane->base.type != DRM_PLANE_TYPE_PRIMARY)
+				intel_plane_disable_noatomic(crtc, plane);
+		}
+
+		/* Disable any background color/etc. set by the BIOS */
+		intel_color_commit_noarm(crtc_state);
+		intel_color_commit_arm(crtc_state);
+	}
+
+	/*
+	 * Adjust the state of the output pipe according to whether we have
+	 * active connectors/encoders.
+	 */
+	if (crtc_state->hw.active && !intel_crtc_has_encoders(crtc) &&
+	    !intel_crtc_is_bigjoiner_slave(crtc_state))
+		intel_crtc_disable_noatomic(crtc, ctx);
+
+	if (crtc_state->hw.active || HAS_GMCH(dev_priv)) {
+		/*
+		 * We start out with underrun reporting disabled to avoid races.
+		 * For correct bookkeeping mark this on active crtcs.
+		 *
+		 * Also on gmch platforms we dont have any hardware bits to
+		 * disable the underrun reporting. Which means we need to start
+		 * out with underrun reporting disabled also on inactive pipes,
+		 * since otherwise we'll complain about the garbage we read when
+		 * e.g. coming up after runtime pm.
+		 *
+		 * No protection against concurrent access is required - at
+		 * worst a fifo underrun happens which also sets this to false.
+		 */
+		crtc->cpu_fifo_underrun_disabled = true;
+		/*
+		 * We track the PCH trancoder underrun reporting state
+		 * within the crtc. With crtc for pipe A housing the underrun
+		 * reporting state for PCH transcoder A, crtc for pipe B housing
+		 * it for PCH transcoder B, etc. LPT-H has only PCH transcoder A,
+		 * and marking underrun reporting as disabled for the non-existing
+		 * PCH transcoders B and C would prevent enabling the south
+		 * error interrupt (see cpt_can_enable_serr_int()).
+		 */
+		if (intel_has_pch_trancoder(dev_priv, crtc->pipe))
+			crtc->pch_fifo_underrun_disabled = true;
+	}
+}
+
+static bool has_bogus_dpll_config(const struct intel_crtc_state *crtc_state)
+{
+	struct drm_i915_private *dev_priv = to_i915(crtc_state->uapi.crtc->dev);
+
+	/*
+	 * Some SNB BIOSen (eg. ASUS K53SV) are known to misprogram
+	 * the hardware when a high res displays plugged in. DPLL P
+	 * divider is zero, and the pipe timings are bonkers. We'll
+	 * try to disable everything in that case.
+	 *
+	 * FIXME would be nice to be able to sanitize this state
+	 * without several WARNs, but for now let's take the easy
+	 * road.
+	 */
+	return IS_SANDYBRIDGE(dev_priv) &&
+		crtc_state->hw.active &&
+		crtc_state->shared_dpll &&
+		crtc_state->port_clock == 0;
+}
+
+static void intel_sanitize_encoder(struct intel_encoder *encoder)
+{
+	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+	struct intel_connector *connector;
+	struct intel_crtc *crtc = to_intel_crtc(encoder->base.crtc);
+	struct intel_crtc_state *crtc_state = crtc ?
+		to_intel_crtc_state(crtc->base.state) : NULL;
+
+	/*
+	 * We need to check both for a crtc link (meaning that the encoder is
+	 * active and trying to read from a pipe) and the pipe itself being
+	 * active.
+	 */
+	bool has_active_crtc = crtc_state &&
+		crtc_state->hw.active;
+
+	if (crtc_state && has_bogus_dpll_config(crtc_state)) {
+		drm_dbg_kms(&dev_priv->drm,
+			    "BIOS has misprogrammed the hardware. Disabling pipe %c\n",
+			    pipe_name(crtc->pipe));
+		has_active_crtc = false;
+	}
+
+	connector = intel_encoder_find_connector(encoder);
+	if (connector && !has_active_crtc) {
+		drm_dbg_kms(&dev_priv->drm,
+			    "[ENCODER:%d:%s] has active connectors but no active pipe!\n",
+			    encoder->base.base.id,
+			    encoder->base.name);
+
+		/*
+		 * Connector is active, but has no active pipe. This is fallout
+		 * from our resume register restoring. Disable the encoder
+		 * manually again.
+		 */
+		if (crtc_state) {
+			struct drm_encoder *best_encoder;
+
+			drm_dbg_kms(&dev_priv->drm,
+				    "[ENCODER:%d:%s] manually disabled\n",
+				    encoder->base.base.id,
+				    encoder->base.name);
+
+			/* avoid oopsing in case the hooks consult best_encoder */
+			best_encoder = connector->base.state->best_encoder;
+			connector->base.state->best_encoder = &encoder->base;
+
+			/* FIXME NULL atomic state passed! */
+			if (encoder->disable)
+				encoder->disable(NULL, encoder, crtc_state,
+						 connector->base.state);
+			if (encoder->post_disable)
+				encoder->post_disable(NULL, encoder, crtc_state,
+						      connector->base.state);
+
+			connector->base.state->best_encoder = best_encoder;
+		}
+		encoder->base.crtc = NULL;
+
+		/*
+		 * Inconsistent output/port/pipe state happens presumably due to
+		 * a bug in one of the get_hw_state functions. Or someplace else
+		 * in our code, like the register restore mess on resume. Clamp
+		 * things to off as a safer default.
+		 */
+		connector->base.dpms = DRM_MODE_DPMS_OFF;
+		connector->base.encoder = NULL;
+	}
+
+	/* notify opregion of the sanitized encoder state */
+	intel_opregion_notify_encoder(encoder, connector && has_active_crtc);
+
+	if (HAS_DDI(dev_priv))
+		intel_ddi_sanitize_encoder_pll_mapping(encoder);
+}
+
+/* FIXME read out full plane state for all planes */
+static void readout_plane_state(struct drm_i915_private *dev_priv)
+{
+	struct intel_plane *plane;
+	struct intel_crtc *crtc;
+
+	for_each_intel_plane(&dev_priv->drm, plane) {
+		struct intel_plane_state *plane_state =
+			to_intel_plane_state(plane->base.state);
+		struct intel_crtc_state *crtc_state;
+		enum pipe pipe = PIPE_A;
+		bool visible;
+
+		visible = plane->get_hw_state(plane, &pipe);
+
+		crtc = intel_crtc_for_pipe(dev_priv, pipe);
+		crtc_state = to_intel_crtc_state(crtc->base.state);
+
+		intel_set_plane_visible(crtc_state, plane_state, visible);
+
+		drm_dbg_kms(&dev_priv->drm,
+			    "[PLANE:%d:%s] hw state readout: %s, pipe %c\n",
+			    plane->base.base.id, plane->base.name,
+			    str_enabled_disabled(visible), pipe_name(pipe));
+	}
+
+	for_each_intel_crtc(&dev_priv->drm, crtc) {
+		struct intel_crtc_state *crtc_state =
+			to_intel_crtc_state(crtc->base.state);
+
+		intel_plane_fixup_bitmasks(crtc_state);
+	}
+}
+
+static void intel_modeset_readout_hw_state(struct drm_device *dev)
+{
+	struct drm_i915_private *dev_priv = to_i915(dev);
+	struct intel_cdclk_state *cdclk_state =
+		to_intel_cdclk_state(dev_priv->cdclk.obj.state);
+	struct intel_dbuf_state *dbuf_state =
+		to_intel_dbuf_state(dev_priv->dbuf.obj.state);
+	enum pipe pipe;
+	struct intel_crtc *crtc;
+	struct intel_encoder *encoder;
+	struct intel_connector *connector;
+	struct drm_connector_list_iter conn_iter;
+	u8 active_pipes = 0;
+
+	for_each_intel_crtc(dev, crtc) {
+		struct intel_crtc_state *crtc_state =
+			to_intel_crtc_state(crtc->base.state);
+
+		__drm_atomic_helper_crtc_destroy_state(&crtc_state->uapi);
+		intel_crtc_free_hw_state(crtc_state);
+		intel_crtc_state_reset(crtc_state, crtc);
+
+		intel_crtc_get_pipe_config(crtc_state);
+
+		crtc_state->hw.enable = crtc_state->hw.active;
+
+		crtc->base.enabled = crtc_state->hw.enable;
+		crtc->active = crtc_state->hw.active;
+
+		if (crtc_state->hw.active)
+			active_pipes |= BIT(crtc->pipe);
+
+		drm_dbg_kms(&dev_priv->drm,
+			    "[CRTC:%d:%s] hw state readout: %s\n",
+			    crtc->base.base.id, crtc->base.name,
+			    str_enabled_disabled(crtc_state->hw.active));
+	}
+
+	cdclk_state->active_pipes = active_pipes;
+	dbuf_state->active_pipes = active_pipes;
+
+	readout_plane_state(dev_priv);
+
+	for_each_intel_encoder(dev, encoder) {
+		struct intel_crtc_state *crtc_state = NULL;
+
+		pipe = 0;
+
+		if (encoder->get_hw_state(encoder, &pipe)) {
+			crtc = intel_crtc_for_pipe(dev_priv, pipe);
+			crtc_state = to_intel_crtc_state(crtc->base.state);
+
+			encoder->base.crtc = &crtc->base;
+			intel_encoder_get_config(encoder, crtc_state);
+
+			/* read out to slave crtc as well for bigjoiner */
+			if (crtc_state->bigjoiner_pipes) {
+				struct intel_crtc *slave_crtc;
+
+				/* encoder should read be linked to bigjoiner master */
+				WARN_ON(intel_crtc_is_bigjoiner_slave(crtc_state));
+
+				for_each_intel_crtc_in_pipe_mask(&dev_priv->drm, slave_crtc,
+								 intel_crtc_bigjoiner_slave_pipes(crtc_state)) {
+					struct intel_crtc_state *slave_crtc_state;
+
+					slave_crtc_state = to_intel_crtc_state(slave_crtc->base.state);
+					intel_encoder_get_config(encoder, slave_crtc_state);
+				}
+			}
+		} else {
+			encoder->base.crtc = NULL;
+		}
+
+		if (encoder->sync_state)
+			encoder->sync_state(encoder, crtc_state);
+
+		drm_dbg_kms(&dev_priv->drm,
+			    "[ENCODER:%d:%s] hw state readout: %s, pipe %c\n",
+			    encoder->base.base.id, encoder->base.name,
+			    str_enabled_disabled(encoder->base.crtc),
+			    pipe_name(pipe));
+	}
+
+	intel_dpll_readout_hw_state(dev_priv);
+
+	drm_connector_list_iter_begin(dev, &conn_iter);
+	for_each_intel_connector_iter(connector, &conn_iter) {
+		if (connector->get_hw_state(connector)) {
+			struct intel_crtc_state *crtc_state;
+			struct intel_crtc *crtc;
+
+			connector->base.dpms = DRM_MODE_DPMS_ON;
+
+			encoder = intel_attached_encoder(connector);
+			connector->base.encoder = &encoder->base;
+
+			crtc = to_intel_crtc(encoder->base.crtc);
+			crtc_state = crtc ? to_intel_crtc_state(crtc->base.state) : NULL;
+
+			if (crtc_state && crtc_state->hw.active) {
+				/*
+				 * This has to be done during hardware readout
+				 * because anything calling .crtc_disable may
+				 * rely on the connector_mask being accurate.
+				 */
+				crtc_state->uapi.connector_mask |=
+					drm_connector_mask(&connector->base);
+				crtc_state->uapi.encoder_mask |=
+					drm_encoder_mask(&encoder->base);
+			}
+		} else {
+			connector->base.dpms = DRM_MODE_DPMS_OFF;
+			connector->base.encoder = NULL;
+		}
+		drm_dbg_kms(&dev_priv->drm,
+			    "[CONNECTOR:%d:%s] hw state readout: %s\n",
+			    connector->base.base.id, connector->base.name,
+			    str_enabled_disabled(connector->base.encoder));
+	}
+	drm_connector_list_iter_end(&conn_iter);
+
+	for_each_intel_crtc(dev, crtc) {
+		struct intel_bw_state *bw_state =
+			to_intel_bw_state(dev_priv->bw_obj.state);
+		struct intel_crtc_state *crtc_state =
+			to_intel_crtc_state(crtc->base.state);
+		struct intel_plane *plane;
+		int min_cdclk = 0;
+
+		if (crtc_state->hw.active) {
+			/*
+			 * The initial mode needs to be set in order to keep
+			 * the atomic core happy. It wants a valid mode if the
+			 * crtc's enabled, so we do the above call.
+			 *
+			 * But we don't set all the derived state fully, hence
+			 * set a flag to indicate that a full recalculation is
+			 * needed on the next commit.
+			 */
+			crtc_state->inherited = true;
+
+			intel_crtc_update_active_timings(crtc_state);
+
+			intel_crtc_copy_hw_to_uapi_state(crtc_state);
+		}
+
+		for_each_intel_plane_on_crtc(&dev_priv->drm, crtc, plane) {
+			const struct intel_plane_state *plane_state =
+				to_intel_plane_state(plane->base.state);
+
+			/*
+			 * FIXME don't have the fb yet, so can't
+			 * use intel_plane_data_rate() :(
+			 */
+			if (plane_state->uapi.visible)
+				crtc_state->data_rate[plane->id] =
+					4 * crtc_state->pixel_rate;
+			/*
+			 * FIXME don't have the fb yet, so can't
+			 * use plane->min_cdclk() :(
+			 */
+			if (plane_state->uapi.visible && plane->min_cdclk) {
+				if (crtc_state->double_wide || DISPLAY_VER(dev_priv) >= 10)
+					crtc_state->min_cdclk[plane->id] =
+						DIV_ROUND_UP(crtc_state->pixel_rate, 2);
+				else
+					crtc_state->min_cdclk[plane->id] =
+						crtc_state->pixel_rate;
+			}
+			drm_dbg_kms(&dev_priv->drm,
+				    "[PLANE:%d:%s] min_cdclk %d kHz\n",
+				    plane->base.base.id, plane->base.name,
+				    crtc_state->min_cdclk[plane->id]);
+		}
+
+		if (crtc_state->hw.active) {
+			min_cdclk = intel_crtc_compute_min_cdclk(crtc_state);
+			if (drm_WARN_ON(dev, min_cdclk < 0))
+				min_cdclk = 0;
+		}
+
+		cdclk_state->min_cdclk[crtc->pipe] = min_cdclk;
+		cdclk_state->min_voltage_level[crtc->pipe] =
+			crtc_state->min_voltage_level;
+
+		intel_bw_crtc_update(bw_state, crtc_state);
+	}
+}
+
+static void
+get_encoder_power_domains(struct drm_i915_private *dev_priv)
+{
+	struct intel_encoder *encoder;
+
+	for_each_intel_encoder(&dev_priv->drm, encoder) {
+		struct intel_crtc_state *crtc_state;
+
+		if (!encoder->get_power_domains)
+			continue;
+
+		/*
+		 * MST-primary and inactive encoders don't have a crtc state
+		 * and neither of these require any power domain references.
+		 */
+		if (!encoder->base.crtc)
+			continue;
+
+		crtc_state = to_intel_crtc_state(encoder->base.crtc->state);
+		encoder->get_power_domains(encoder, crtc_state);
+	}
+}
+
+static void intel_early_display_was(struct drm_i915_private *dev_priv)
+{
+	/*
+	 * Display WA #1185 WaDisableDARBFClkGating:glk,icl,ehl,tgl
+	 * Also known as Wa_14010480278.
+	 */
+	if (IS_DISPLAY_VER(dev_priv, 10, 12))
+		intel_de_write(dev_priv, GEN9_CLKGATE_DIS_0,
+			       intel_de_read(dev_priv, GEN9_CLKGATE_DIS_0) | DARBF_GATING_DIS);
+
+	if (IS_HASWELL(dev_priv)) {
+		/*
+		 * WaRsPkgCStateDisplayPMReq:hsw
+		 * System hang if this isn't done before disabling all planes!
+		 */
+		intel_de_write(dev_priv, CHICKEN_PAR1_1,
+			       intel_de_read(dev_priv, CHICKEN_PAR1_1) | FORCE_ARB_IDLE_PLANES);
+	}
+
+	if (IS_KABYLAKE(dev_priv) || IS_COFFEELAKE(dev_priv) || IS_COMETLAKE(dev_priv)) {
+		/* Display WA #1142:kbl,cfl,cml */
+		intel_de_rmw(dev_priv, CHICKEN_PAR1_1,
+			     KBL_ARB_FILL_SPARE_22, KBL_ARB_FILL_SPARE_22);
+		intel_de_rmw(dev_priv, CHICKEN_MISC_2,
+			     KBL_ARB_FILL_SPARE_13 | KBL_ARB_FILL_SPARE_14,
+			     KBL_ARB_FILL_SPARE_14);
+	}
+}
+
+void intel_modeset_setup_hw_state(struct drm_device *dev,
+				  struct drm_modeset_acquire_ctx *ctx)
+{
+	struct drm_i915_private *dev_priv = to_i915(dev);
+	struct intel_encoder *encoder;
+	struct intel_crtc *crtc;
+	intel_wakeref_t wakeref;
+
+	wakeref = intel_display_power_get(dev_priv, POWER_DOMAIN_INIT);
+
+	intel_early_display_was(dev_priv);
+	intel_modeset_readout_hw_state(dev);
+
+	/* HW state is read out, now we need to sanitize this mess. */
+	get_encoder_power_domains(dev_priv);
+
+	intel_pch_sanitize(dev_priv);
+
+	/*
+	 * intel_sanitize_plane_mapping() may need to do vblank
+	 * waits, so we need vblank interrupts restored beforehand.
+	 */
+	for_each_intel_crtc(&dev_priv->drm, crtc) {
+		struct intel_crtc_state *crtc_state =
+			to_intel_crtc_state(crtc->base.state);
+
+		drm_crtc_vblank_reset(&crtc->base);
+
+		if (crtc_state->hw.active)
+			intel_crtc_vblank_on(crtc_state);
+	}
+
+	intel_fbc_sanitize(dev_priv);
+
+	intel_sanitize_plane_mapping(dev_priv);
+
+	for_each_intel_encoder(dev, encoder)
+		intel_sanitize_encoder(encoder);
+
+	for_each_intel_crtc(&dev_priv->drm, crtc) {
+		struct intel_crtc_state *crtc_state =
+			to_intel_crtc_state(crtc->base.state);
+
+		intel_sanitize_crtc(crtc, ctx);
+		intel_crtc_state_dump(crtc_state, NULL, "setup_hw_state");
+	}
+
+	intel_modeset_update_connector_atomic_state(dev);
+
+	intel_dpll_sanitize_state(dev_priv);
+
+	if (IS_G4X(dev_priv)) {
+		g4x_wm_get_hw_state(dev_priv);
+		g4x_wm_sanitize(dev_priv);
+	} else if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv)) {
+		vlv_wm_get_hw_state(dev_priv);
+		vlv_wm_sanitize(dev_priv);
+	} else if (DISPLAY_VER(dev_priv) >= 9) {
+		skl_wm_get_hw_state(dev_priv);
+		skl_wm_sanitize(dev_priv);
+	} else if (HAS_PCH_SPLIT(dev_priv)) {
+		ilk_wm_get_hw_state(dev_priv);
+	}
+
+	for_each_intel_crtc(dev, crtc) {
+		struct intel_crtc_state *crtc_state =
+			to_intel_crtc_state(crtc->base.state);
+		struct intel_power_domain_mask put_domains;
+
+		intel_modeset_get_crtc_power_domains(crtc_state, &put_domains);
+		if (drm_WARN_ON(dev, !bitmap_empty(put_domains.bits, POWER_DOMAIN_NUM)))
+			intel_modeset_put_crtc_power_domains(crtc, &put_domains);
+	}
+
+	intel_display_power_put(dev_priv, POWER_DOMAIN_INIT, wakeref);
+
+	intel_power_domains_sanitize_state(dev_priv);
+}
diff --git a/drivers/gpu/drm/i915/display/intel_modeset_setup.h b/drivers/gpu/drm/i915/display/intel_modeset_setup.h
new file mode 100644
index 000000000000..c29b34c6a7b0
--- /dev/null
+++ b/drivers/gpu/drm/i915/display/intel_modeset_setup.h
@@ -0,0 +1,15 @@
+/* SPDX-License-Identifier: MIT */
+/*
+ * Copyright © 2022 Intel Corporation
+ */
+
+#ifndef __INTEL_MODESET_SETUP_H__
+#define __INTEL_MODESET_SETUP_H__
+
+struct drm_device;
+struct drm_modeset_acquire_ctx;
+
+void intel_modeset_setup_hw_state(struct drm_device *dev,
+				  struct drm_modeset_acquire_ctx *ctx);
+
+#endif /* __INTEL_MODESET_SETUP_H__ */
