diff --git a/drivers/gpu/drm/i915/intel_crt.c b/drivers/gpu/drm/i915/intel_crt.c
index 9eba3dd5b434..af5e43bef4a4 100644
--- a/drivers/gpu/drm/i915/intel_crt.c
+++ b/drivers/gpu/drm/i915/intel_crt.c
@@ -236,53 +236,6 @@ static void intel_enable_crt(struct intel_encoder *encoder)
 	intel_crt_set_dpms(encoder, crt->connector->base.dpms);
 }
 
-/* Special dpms function to support cloning between dvo/sdvo/crt. */
-static int intel_crt_dpms(struct drm_connector *connector, int mode)
-{
-	struct drm_device *dev = connector->dev;
-	struct intel_encoder *encoder = intel_attached_encoder(connector);
-	struct drm_crtc *crtc;
-	int old_dpms;
-
-	/* PCH platforms and VLV only support on/off. */
-	if (INTEL_INFO(dev)->gen >= 5 && mode != DRM_MODE_DPMS_ON)
-		mode = DRM_MODE_DPMS_OFF;
-
-	if (mode == connector->dpms)
-		return 0;
-
-	old_dpms = connector->dpms;
-	connector->dpms = mode;
-
-	/* Only need to change hw state when actually enabled */
-	crtc = encoder->base.crtc;
-	if (!crtc) {
-		encoder->connectors_active = false;
-		return 0;
-	}
-
-	/* We need the pipe to run for anything but OFF. */
-	if (mode == DRM_MODE_DPMS_OFF)
-		encoder->connectors_active = false;
-	else
-		encoder->connectors_active = true;
-
-	/* We call connector dpms manually below in case pipe dpms doesn't
-	 * change due to cloning. */
-	if (mode < old_dpms) {
-		/* From off to on, enable the pipe first. */
-		intel_crtc_update_dpms(crtc);
-
-		intel_crt_set_dpms(encoder, mode);
-	} else {
-		intel_crt_set_dpms(encoder, mode);
-
-		intel_crtc_update_dpms(crtc);
-	}
-
-	return 0;
-}
-
 static enum drm_mode_status
 intel_crt_mode_valid(struct drm_connector *connector,
 		     struct drm_display_mode *mode)
@@ -798,7 +751,7 @@ static void intel_crt_reset(struct drm_connector *connector)
 
 static const struct drm_connector_funcs intel_crt_connector_funcs = {
 	.reset = intel_crt_reset,
-	.dpms = intel_crt_dpms,
+	.dpms = drm_atomic_helper_connector_dpms,
 	.detect = intel_crt_detect,
 	.fill_modes = drm_helper_probe_single_connector_modes,
 	.destroy = intel_crt_destroy,
diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index 4babecd1c99f..4837d14a5f8e 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -6271,67 +6271,6 @@ free:
 	return ret;
 }
 
-/* Master function to enable/disable CRTC and corresponding power wells */
-int intel_crtc_control(struct drm_crtc *crtc, bool enable)
-{
-	struct drm_device *dev = crtc->dev;
-	struct drm_mode_config *config = &dev->mode_config;
-	struct drm_modeset_acquire_ctx *ctx = config->acquire_ctx;
-	struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
-	struct intel_crtc_state *pipe_config;
-	struct drm_atomic_state *state;
-	int ret;
-
-	if (enable == intel_crtc->active)
-		return 0;
-
-	if (enable && !crtc->state->enable)
-		return 0;
-
-	/* this function should be called with drm_modeset_lock_all for now */
-	if (WARN_ON(!ctx))
-		return -EIO;
-	lockdep_assert_held(&ctx->ww_ctx);
-
-	state = drm_atomic_state_alloc(dev);
-	if (WARN_ON(!state))
-		return -ENOMEM;
-
-	state->acquire_ctx = ctx;
-	state->allow_modeset = true;
-
-	pipe_config = intel_atomic_get_crtc_state(state, intel_crtc);
-	if (IS_ERR(pipe_config)) {
-		ret = PTR_ERR(pipe_config);
-		goto err;
-	}
-	pipe_config->base.active = enable;
-
-	ret = drm_atomic_commit(state);
-	if (!ret)
-		return ret;
-
-err:
-	DRM_ERROR("Updating crtc active failed with %i\n", ret);
-	drm_atomic_state_free(state);
-	return ret;
-}
-
-/**
- * Sets the power management mode of the pipe and plane.
- */
-void intel_crtc_update_dpms(struct drm_crtc *crtc)
-{
-	struct drm_device *dev = crtc->dev;
-	struct intel_encoder *intel_encoder;
-	bool enable = false;
-
-	for_each_encoder_on_crtc(dev, crtc, intel_encoder)
-		enable |= intel_encoder->connectors_active;
-
-	intel_crtc_control(crtc, enable);
-}
-
 void intel_encoder_destroy(struct drm_encoder *encoder)
 {
 	struct intel_encoder *intel_encoder = to_intel_encoder(encoder);
@@ -6340,22 +6279,6 @@ void intel_encoder_destroy(struct drm_encoder *encoder)
 	kfree(intel_encoder);
 }
 
-/* Simple dpms helper for encoders with just one connector, no cloning and only
- * one kind of off state. It clamps all !ON modes to fully OFF and changes the
- * state of the entire output pipe. */
-static void intel_encoder_dpms(struct intel_encoder *encoder, int mode)
-{
-	if (mode == DRM_MODE_DPMS_ON) {
-		encoder->connectors_active = true;
-
-		intel_crtc_update_dpms(encoder->base.crtc);
-	} else {
-		encoder->connectors_active = false;
-
-		intel_crtc_update_dpms(encoder->base.crtc);
-	}
-}
-
 /* Cross check the actual hw state with our own modeset state tracking (and it's
  * internal consistency). */
 static void intel_connector_check_state(struct intel_connector *connector)
@@ -6385,6 +6308,8 @@ static void intel_connector_check_state(struct intel_connector *connector)
 		I915_STATE_WARN(conn_state->crtc != encoder->crtc,
 			"attached encoder crtc differs from connector crtc\n");
 	} else {
+		I915_STATE_WARN(crtc && crtc->state->active,
+			"attached crtc is active, but connector isn't\n");
 		I915_STATE_WARN(!crtc && connector->base.state->best_encoder,
 			"best encoder set without crtc!\n");
 	}
@@ -6418,26 +6343,6 @@ struct intel_connector *intel_connector_alloc(void)
 	return connector;
 }
 
-/* Even simpler default implementation, if there's really no special case to
- * consider. */
-int intel_connector_dpms(struct drm_connector *connector, int mode)
-{
-	/* All the simple cases only support two dpms states. */
-	if (mode != DRM_MODE_DPMS_ON)
-		mode = DRM_MODE_DPMS_OFF;
-
-	if (mode == connector->dpms)
-		return 0;
-
-	connector->dpms = mode;
-
-	/* Only need to change hw state when actually enabled */
-	if (connector->encoder)
-		intel_encoder_dpms(to_intel_encoder(connector->encoder), mode);
-
-	return 0;
-}
-
 /* Simple connector->get_hw_state implementation for encoders that support only
  * one connector and no cloning and hence the encoder state determines the state
  * of the connector. */
diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c
index 44f8a32e4d1e..3c243dee72c2 100644
--- a/drivers/gpu/drm/i915/intel_dp.c
+++ b/drivers/gpu/drm/i915/intel_dp.c
@@ -4825,7 +4825,7 @@ static void intel_dp_encoder_reset(struct drm_encoder *encoder)
 }
 
 static const struct drm_connector_funcs intel_dp_connector_funcs = {
-	.dpms = intel_connector_dpms,
+	.dpms = drm_atomic_helper_connector_dpms,
 	.detect = intel_dp_detect,
 	.force = intel_dp_force,
 	.fill_modes = drm_helper_probe_single_connector_modes,
diff --git a/drivers/gpu/drm/i915/intel_dp_mst.c b/drivers/gpu/drm/i915/intel_dp_mst.c
index 36bd9394f789..fa7033094c95 100644
--- a/drivers/gpu/drm/i915/intel_dp_mst.c
+++ b/drivers/gpu/drm/i915/intel_dp_mst.c
@@ -328,7 +328,7 @@ intel_dp_mst_connector_destroy(struct drm_connector *connector)
 }
 
 static const struct drm_connector_funcs intel_dp_mst_connector_funcs = {
-	.dpms = intel_connector_dpms,
+	.dpms = drm_atomic_helper_connector_dpms,
 	.detect = intel_dp_mst_detect,
 	.fill_modes = drm_helper_probe_single_connector_modes,
 	.set_property = intel_dp_mst_set_property,
diff --git a/drivers/gpu/drm/i915/intel_drv.h b/drivers/gpu/drm/i915/intel_drv.h
index 0da4236dc85a..62073d2f83fa 100644
--- a/drivers/gpu/drm/i915/intel_drv.h
+++ b/drivers/gpu/drm/i915/intel_drv.h
@@ -992,12 +992,9 @@ void intel_mark_busy(struct drm_device *dev);
 void intel_mark_idle(struct drm_device *dev);
 void intel_crtc_restore_mode(struct drm_crtc *crtc);
 int intel_display_suspend(struct drm_device *dev);
-int intel_crtc_control(struct drm_crtc *crtc, bool enable);
-void intel_crtc_update_dpms(struct drm_crtc *crtc);
 void intel_encoder_destroy(struct drm_encoder *encoder);
 int intel_connector_init(struct intel_connector *);
 struct intel_connector *intel_connector_alloc(void);
-int intel_connector_dpms(struct drm_connector *, int mode);
 bool intel_connector_get_hw_state(struct intel_connector *connector);
 bool ibx_digital_port_connected(struct drm_i915_private *dev_priv,
 				struct intel_digital_port *port);
diff --git a/drivers/gpu/drm/i915/intel_dsi.c b/drivers/gpu/drm/i915/intel_dsi.c
index 18dd7d7360a0..4a601cf90f16 100644
--- a/drivers/gpu/drm/i915/intel_dsi.c
+++ b/drivers/gpu/drm/i915/intel_dsi.c
@@ -982,7 +982,7 @@ static const struct drm_connector_helper_funcs intel_dsi_connector_helper_funcs
 };
 
 static const struct drm_connector_funcs intel_dsi_connector_funcs = {
-	.dpms = intel_connector_dpms,
+	.dpms = drm_atomic_helper_connector_dpms,
 	.detect = intel_dsi_detect,
 	.destroy = intel_dsi_connector_destroy,
 	.fill_modes = drm_helper_probe_single_connector_modes,
diff --git a/drivers/gpu/drm/i915/intel_dvo.c b/drivers/gpu/drm/i915/intel_dvo.c
index 600f7fb855d8..dc532bb61d22 100644
--- a/drivers/gpu/drm/i915/intel_dvo.c
+++ b/drivers/gpu/drm/i915/intel_dvo.c
@@ -196,50 +196,6 @@ static void intel_enable_dvo(struct intel_encoder *encoder)
 	intel_dvo->dev.dev_ops->dpms(&intel_dvo->dev, true);
 }
 
-/* Special dpms function to support cloning between dvo/sdvo/crt. */
-static int intel_dvo_dpms(struct drm_connector *connector, int mode)
-{
-	struct intel_dvo *intel_dvo = intel_attached_dvo(connector);
-	struct drm_crtc *crtc;
-	struct intel_crtc_state *config;
-
-	/* dvo supports only 2 dpms states. */
-	if (mode != DRM_MODE_DPMS_ON)
-		mode = DRM_MODE_DPMS_OFF;
-
-	if (mode == connector->dpms)
-		return 0;
-
-	connector->dpms = mode;
-
-	/* Only need to change hw state when actually enabled */
-	crtc = intel_dvo->base.base.crtc;
-	if (!crtc) {
-		intel_dvo->base.connectors_active = false;
-		return 0;
-	}
-
-	/* We call connector dpms manually below in case pipe dpms doesn't
-	 * change due to cloning. */
-	if (mode == DRM_MODE_DPMS_ON) {
-		config = to_intel_crtc(crtc)->config;
-
-		intel_dvo->base.connectors_active = true;
-
-		intel_crtc_update_dpms(crtc);
-
-		intel_dvo->dev.dev_ops->dpms(&intel_dvo->dev, true);
-	} else {
-		intel_dvo->dev.dev_ops->dpms(&intel_dvo->dev, false);
-
-		intel_dvo->base.connectors_active = false;
-
-		intel_crtc_update_dpms(crtc);
-	}
-
-	return 0;
-}
-
 static enum drm_mode_status
 intel_dvo_mode_valid(struct drm_connector *connector,
 		     struct drm_display_mode *mode)
@@ -387,7 +343,7 @@ static void intel_dvo_destroy(struct drm_connector *connector)
 }
 
 static const struct drm_connector_funcs intel_dvo_connector_funcs = {
-	.dpms = intel_dvo_dpms,
+	.dpms = drm_atomic_helper_connector_dpms,
 	.detect = intel_dvo_detect,
 	.destroy = intel_dvo_destroy,
 	.fill_modes = drm_helper_probe_single_connector_modes,
diff --git a/drivers/gpu/drm/i915/intel_hdmi.c b/drivers/gpu/drm/i915/intel_hdmi.c
index 70bad5bf1d48..51cbea8247fe 100644
--- a/drivers/gpu/drm/i915/intel_hdmi.c
+++ b/drivers/gpu/drm/i915/intel_hdmi.c
@@ -1909,7 +1909,7 @@ static void intel_hdmi_destroy(struct drm_connector *connector)
 }
 
 static const struct drm_connector_funcs intel_hdmi_connector_funcs = {
-	.dpms = intel_connector_dpms,
+	.dpms = drm_atomic_helper_connector_dpms,
 	.detect = intel_hdmi_detect,
 	.force = intel_hdmi_force,
 	.fill_modes = drm_helper_probe_single_connector_modes,
diff --git a/drivers/gpu/drm/i915/intel_lvds.c b/drivers/gpu/drm/i915/intel_lvds.c
index cb634f48e7d9..881b5d13592e 100644
--- a/drivers/gpu/drm/i915/intel_lvds.c
+++ b/drivers/gpu/drm/i915/intel_lvds.c
@@ -549,7 +549,7 @@ static const struct drm_connector_helper_funcs intel_lvds_connector_helper_funcs
 };
 
 static const struct drm_connector_funcs intel_lvds_connector_funcs = {
-	.dpms = intel_connector_dpms,
+	.dpms = drm_atomic_helper_connector_dpms,
 	.detect = intel_lvds_detect,
 	.fill_modes = drm_helper_probe_single_connector_modes,
 	.set_property = intel_lvds_set_property,
diff --git a/drivers/gpu/drm/i915/intel_sdvo.c b/drivers/gpu/drm/i915/intel_sdvo.c
index 8911e0e417ee..c98098e884cc 100644
--- a/drivers/gpu/drm/i915/intel_sdvo.c
+++ b/drivers/gpu/drm/i915/intel_sdvo.c
@@ -1508,51 +1508,6 @@ static void intel_enable_sdvo(struct intel_encoder *encoder)
 	intel_sdvo_set_active_outputs(intel_sdvo, intel_sdvo->attached_output);
 }
 
-/* Special dpms function to support cloning between dvo/sdvo/crt. */
-static int intel_sdvo_dpms(struct drm_connector *connector, int mode)
-{
-	struct drm_crtc *crtc;
-	struct intel_sdvo *intel_sdvo = intel_attached_sdvo(connector);
-
-	/* dvo supports only 2 dpms states. */
-	if (mode != DRM_MODE_DPMS_ON)
-		mode = DRM_MODE_DPMS_OFF;
-
-	if (mode == connector->dpms)
-		return 0;
-
-	connector->dpms = mode;
-
-	/* Only need to change hw state when actually enabled */
-	crtc = intel_sdvo->base.base.crtc;
-	if (!crtc) {
-		intel_sdvo->base.connectors_active = false;
-		return 0;
-	}
-
-	/* We set active outputs manually below in case pipe dpms doesn't change
-	 * due to cloning. */
-	if (mode != DRM_MODE_DPMS_ON) {
-		intel_sdvo_set_active_outputs(intel_sdvo, 0);
-		if (0)
-			intel_sdvo_set_encoder_power_state(intel_sdvo, mode);
-
-		intel_sdvo->base.connectors_active = false;
-
-		intel_crtc_update_dpms(crtc);
-	} else {
-		intel_sdvo->base.connectors_active = true;
-
-		intel_crtc_update_dpms(crtc);
-
-		if (0)
-			intel_sdvo_set_encoder_power_state(intel_sdvo, mode);
-		intel_sdvo_set_active_outputs(intel_sdvo, intel_sdvo->attached_output);
-	}
-
-	return 0;
-}
-
 static enum drm_mode_status
 intel_sdvo_mode_valid(struct drm_connector *connector,
 		      struct drm_display_mode *mode)
@@ -2190,7 +2145,7 @@ done:
 }
 
 static const struct drm_connector_funcs intel_sdvo_connector_funcs = {
-	.dpms = intel_sdvo_dpms,
+	.dpms = drm_atomic_helper_connector_dpms,
 	.detect = intel_sdvo_detect,
 	.fill_modes = drm_helper_probe_single_connector_modes,
 	.set_property = intel_sdvo_set_property,
diff --git a/drivers/gpu/drm/i915/intel_tv.c b/drivers/gpu/drm/i915/intel_tv.c
index 8b9d325bda3c..0568ae6ec9dd 100644
--- a/drivers/gpu/drm/i915/intel_tv.c
+++ b/drivers/gpu/drm/i915/intel_tv.c
@@ -1509,7 +1509,7 @@ out:
 }
 
 static const struct drm_connector_funcs intel_tv_connector_funcs = {
-	.dpms = intel_connector_dpms,
+	.dpms = drm_atomic_helper_connector_dpms,
 	.detect = intel_tv_detect,
 	.destroy = intel_tv_destroy,
 	.set_property = intel_tv_set_property,
