diff --git a/drivers/gpu/drm/drm_atomic_uapi.c b/drivers/gpu/drm/drm_atomic_uapi.c
index d5b7f315098c..39db6e31c565 100644
--- a/drivers/gpu/drm/drm_atomic_uapi.c
+++ b/drivers/gpu/drm/drm_atomic_uapi.c
@@ -740,6 +740,12 @@ static int drm_atomic_connector_set_property(struct drm_connector *connector,
 
 		return set_out_fence_for_connector(state->state, connector,
 						   fence_ptr);
+	} else if (property == connector->underscan_mode_property) {
+		state->underscan.mode = val;
+	} else if (property == connector->underscan_hborder_property) {
+		state->underscan.hborder = val;
+	} else if (property == connector->underscan_vborder_property) {
+		state->underscan.vborder = val;
 	} else if (connector->funcs->atomic_set_property) {
 		return connector->funcs->atomic_set_property(connector,
 				state, property, val);
@@ -799,6 +805,12 @@ drm_atomic_connector_get_property(struct drm_connector *connector,
 		*val = state->scaling_mode;
 	} else if (property == connector->content_protection_property) {
 		*val = state->content_protection;
+	} else if (property == connector->underscan_mode_property) {
+		*val = state->underscan.mode;
+	} else if (property == connector->underscan_hborder_property) {
+		*val = state->underscan.hborder;
+	} else if (property == connector->underscan_vborder_property) {
+		*val = state->underscan.vborder;
 	} else if (property == config->writeback_fb_id_property) {
 		/* Writeback framebuffer is one-shot, write and forget */
 		*val = 0;
diff --git a/drivers/gpu/drm/drm_connector.c b/drivers/gpu/drm/drm_connector.c
index c555e17ab8d7..170317248da6 100644
--- a/drivers/gpu/drm/drm_connector.c
+++ b/drivers/gpu/drm/drm_connector.c
@@ -971,6 +971,38 @@ DRM_ENUM_NAME_FN(drm_get_content_protection_name, drm_cp_enum_list)
  *	can also expose this property to external outputs, in which case they
  *	must support "None", which should be the default (since external screens
  *	have a built-in scaler).
+ *
+ * Connectors for non-analog outputs may also have standardized underscan
+ * properties (drivers can set this up by calling
+ * drm_connector_attach_content_protection_property() on initialization):
+ *
+ * underscan:
+ *	This properties defines whether underscan is activated or not, and when
+ *	it is activated, how the horizontal and vertical borders are calculated:
+ *
+ *	off:
+ *		Underscan is disabled. The output image shouldn't be scaled to
+ *		take screen borders into account.
+ *	on:
+ *		Underscan is activated and horizontal and vertical borders are
+ *		specified through the "underscan hborder" and
+ *		"underscan vborder" properties.
+ *	auto:
+ *		Underscan is activated only for HDMI monitors.
+ *
+ * underscan hborder:
+ *	Horizontal border expressed in pixels. The border is symmetric, which
+ *	means you'll have a border of 'hborder' pixels on the left and on the
+ *	same border on the right.
+ *	When this value is 0 and underscan is "on" or "auto", the driver will
+ *	pick a default value (the default value is driver dependent).
+ *
+ * underscan vborder:
+ *	Vertical border expressed in pixels. The border is symmetric, which
+ *	means you'll have a border of 'vborder' pixels on the top and the same
+ *	border on the bottom.
+ *	When this value is 0 and underscan is "on" or "auto", the driver will
+ *	pick a default value (the default value is driver dependent).
  */
 
 int drm_connector_create_standard_properties(struct drm_device *dev)
@@ -1241,6 +1273,101 @@ int drm_mode_create_tv_properties(struct drm_device *dev,
 }
 EXPORT_SYMBOL(drm_mode_create_tv_properties);
 
+static const struct drm_prop_enum_list drm_underscan_mode_enum_list[] = {
+	{ DRM_UNDERSCAN_OFF, "off" },
+	{ DRM_UNDERSCAN_ON, "on" },
+	{ DRM_UNDERSCAN_AUTO, "auto" },
+};
+
+/**
+ * drm_connector_attach_underscan_properties - attach atomic underscan
+ *					       properties
+ * @connector: connector to attach underscan mode properties on.
+ * @mode_mask: bitmask of %DRM_UNDERSCAN_XX modes encoding the supported
+ *	       underscan modes.
+ * @max_hborder: maximum size of the horizontal border expressed in pixels.
+ *		 Should be > 0.
+ * @max_vborder: maximum size of the vertical border expressed in pixels.
+ *		 Should be > 0.
+ *
+ * This is used to add support for underscan to atomic drivers.
+ * The underscan config will be set to &drm_connector_state.underscan
+ * and can be used from &drm_connector_helper_funcs->atomic_check for
+ * validation.
+ *
+ * Returns:
+ * Zero on success, negative errno on failure.
+ */
+int drm_connector_attach_underscan_properties(struct drm_connector *connector,
+					      u32 mode_mask, u64 max_hborder,
+					      u64 max_vborder)
+{
+	unsigned int i, nmodes = ARRAY_SIZE(drm_underscan_mode_enum_list);
+	struct drm_device *dev = connector->dev;
+	struct drm_property *prop;
+
+	if (!max_hborder || !max_vborder)
+		return -EINVAL;
+
+	if (!hweight32(mode_mask) || (mode_mask & ~GENMASK(nmodes - 1, 0)))
+		return -EINVAL;
+
+	prop = drm_property_create(dev, DRM_MODE_PROP_ENUM, "underscan",
+				   hweight32(mode_mask));
+	if (!prop)
+		return -ENOMEM;
+
+	for (i = 0; i < ARRAY_SIZE(drm_underscan_mode_enum_list); i++) {
+		const struct drm_prop_enum_list *entry;
+		int ret;
+
+		if (!(BIT(i) & mode_mask))
+			continue;
+
+		entry = &drm_underscan_mode_enum_list[i];
+		ret = drm_property_add_enum(prop, entry->type, entry->name);
+		if (ret)
+			goto err_free_mode_prop;
+	}
+
+	connector->underscan_mode_property = prop;
+
+	prop = drm_property_create_range(dev, 0, "underscan hborder", 0,
+					 max_hborder);
+	if (!prop)
+		goto err_free_mode_prop;
+
+	connector->underscan_hborder_property = prop;
+
+	prop = drm_property_create_range(dev, 0, "underscan vborder", 0,
+					 max_vborder);
+	if (!prop)
+		goto err_free_hborder_prop;
+
+	connector->underscan_vborder_property = prop;
+
+	drm_object_attach_property(&connector->base,
+				   connector->underscan_mode_property,
+				   DRM_UNDERSCAN_OFF);
+	drm_object_attach_property(&connector->base,
+				   connector->underscan_hborder_property, 0);
+	drm_object_attach_property(&connector->base,
+				   connector->underscan_vborder_property, 0);
+
+	return 0;
+
+err_free_hborder_prop:
+	drm_property_destroy(dev, connector->underscan_hborder_property);
+	connector->underscan_hborder_property = NULL;
+
+err_free_mode_prop:
+	drm_property_destroy(dev, connector->underscan_mode_property);
+	connector->underscan_mode_property = NULL;
+
+	return -ENOMEM;
+}
+EXPORT_SYMBOL(drm_connector_attach_underscan_properties);
+
 /**
  * drm_mode_create_scaling_mode_property - create scaling mode property
  * @dev: DRM device
diff --git a/include/drm/drm_connector.h b/include/drm/drm_connector.h
index 5b3cf909fd5e..14d423dc7a14 100644
--- a/include/drm/drm_connector.h
+++ b/include/drm/drm_connector.h
@@ -377,6 +377,53 @@ struct drm_tv_connector_state {
 	unsigned int hue;
 };
 
+/**
+ * enum drm_underscan_mode - Underscan mode
+ *
+ * This enum is used to track the underscan mode.
+ *
+ * @DRM_UNDERSCAN_OFF: No underscan applied, the output image will be unchanged
+ * @DRM_UNDERSCAN_ON: Underscan is enabled, and horizontal/vertical border size
+ *		      are specified through the &struct_drm_underscan->hborder
+ *		      and &struct_drm_underscan->vborder fields.
+ * @DRM_UNDERSCAN_AUTO: Underscan is enabled and &struct_drm_underscan->hborder
+ *			and &struct_drm_underscan->vborder are guessed by the
+ *			driver.
+ */
+enum drm_underscan_mode {
+	DRM_UNDERSCAN_OFF,
+	DRM_UNDERSCAN_ON,
+	DRM_UNDERSCAN_AUTO,
+};
+
+/**
+ * struct drm_underscan_state - Underscan properties attached to a connector
+ *				state
+ *
+ * This can be used to tell the CRTC how the image should be scaled/placed in
+ * order to cover fit in the display connected through this connector. Most of
+ * the time used to address situations where the display borders are hidden.
+ * Can also be used to compensate overscan done on the display side.
+ */
+struct drm_underscan_state {
+	/**
+	 * @mode: Underscan mode.
+	 */
+	enum drm_underscan_mode mode;
+
+	/**
+	 * @hborder: Horizontal border. This values encodes both the left and
+	 * right borders: left_border = right_border = hborder / 2.
+	 */
+	unsigned int hborder;
+
+	/**
+	 * @vborder: Vertical border. This values encodes both the top and
+	 * bottom borders: top_border = bottom_border = vborder / 2.
+	 */
+	unsigned int vborder;
+};
+
 /**
  * struct drm_connector_state - mutable connector state
  */
@@ -461,6 +508,13 @@ struct drm_connector_state {
 	 * drm_writeback_signal_completion()
 	 */
 	struct drm_writeback_job *writeback_job;
+
+	/**
+	 * @underscan: Underscan information. Most commonly used to adjust
+	 * image when the display has borders covering part of the image of
+	 * when it's doing overscan on its own.
+	 */
+	struct drm_underscan_state underscan;
 };
 
 /**
@@ -924,6 +978,29 @@ struct drm_connector {
 	 */
 	struct drm_property_blob *path_blob_ptr;
 
+	/**
+	 * @underscan_mode_property: Optional connector underscan mode. Used by
+	 * the driver to scale the output image and compensate an overscan done
+	 * on the display side.
+	 */
+	struct drm_property *underscan_mode_property;
+
+	/**
+	 * @underscan_hborder_property: Optional connector underscan horizontal
+	 * border (expressed in pixels). Used by the driver to adjust the
+	 * output image position and compensate an overscan done on the display
+	 * side.
+	 */
+	struct drm_property *underscan_hborder_property;
+
+	/**
+	 * @underscan_hborder_property: Optional connector underscan vertical
+	 * border (expressed in pixels). Used by the driver to adjust the
+	 * output image position and compensate an overscan done on the display
+	 * side.
+	 */
+	struct drm_property *underscan_vborder_property;
+
 #define DRM_CONNECTOR_POLL_HPD (1 << 0)
 #define DRM_CONNECTOR_POLL_CONNECT (1 << 1)
 #define DRM_CONNECTOR_POLL_DISCONNECT (1 << 2)
@@ -1180,6 +1257,9 @@ int drm_mode_create_dvi_i_properties(struct drm_device *dev);
 int drm_mode_create_tv_properties(struct drm_device *dev,
 				  unsigned int num_modes,
 				  const char * const modes[]);
+int drm_connector_attach_underscan_properties(struct drm_connector *connector,
+					      u32 mode_mask, u64 max_hborder,
+					      u64 max_vborder);
 int drm_mode_create_scaling_mode_property(struct drm_device *dev);
 int drm_connector_attach_content_type_property(struct drm_connector *dev);
 int drm_connector_attach_scaling_mode_property(struct drm_connector *connector,
