diff --git a/core/includes/form.inc b/core/includes/form.inc
index 9e0b7c7..ae60c90 100644
--- a/core/includes/form.inc
+++ b/core/includes/form.inc
@@ -685,27 +685,6 @@ function form_type_select_value($element, $input = FALSE) {
 }
 
 /**
- * Determines the value for a textfield form element.
- *
- * @param $element
- *   The form element whose value is being populated.
- * @param $input
- *   The incoming input to populate the form element. If this is FALSE,
- *   the element's default value should be returned.
- *
- * @return
- *   The data that will appear in the $element_state['values'] collection
- *   for this element. Return nothing to use the default.
- */
-function form_type_textfield_value($element, $input = FALSE) {
-  if ($input !== FALSE && $input !== NULL) {
-    // Equate $input to the form value to ensure it's marked for
-    // validation.
-    return str_replace(array("\r", "\n"), '', $input);
-  }
-}
-
-/**
  * Determines the value for form's token value.
  *
  * @param $element
diff --git a/core/lib/Drupal/Core/Form/FormBuilder.php b/core/lib/Drupal/Core/Form/FormBuilder.php
index c150c29..5885eaa 100644
--- a/core/lib/Drupal/Core/Form/FormBuilder.php
+++ b/core/lib/Drupal/Core/Form/FormBuilder.php
@@ -1042,7 +1042,14 @@ protected function handleInputElement($form_id, &$element, &$form_state) {
 
     // Set the element's #value property.
     if (!isset($element['#value']) && !array_key_exists('#value', $element)) {
+      // @todo Once all elements are converted to plugins in
+      //   https://www.drupal.org/node/2311393, rely on
+      //   $element['#value_callback'] directly.
       $value_callable = !empty($element['#value_callback']) ? $element['#value_callback'] : 'form_type_' . $element['#type'] . '_value';
+      if (!is_callable($value_callable)) {
+        $value_callable = '\Drupal\Core\Render\Element\FormElement::valueCallback';
+      }
+
       if ($process_input) {
         // Get the input for the current element. NULL values in the input need
         // to be explicitly distinguished from missing input. (see below)
@@ -1066,9 +1073,8 @@ protected function handleInputElement($form_id, &$element, &$form_state) {
         // If we have input for the current element, assign it to the #value
         // property, optionally filtered through $value_callback.
         if ($input_exists) {
-          if (is_callable($value_callable)) {
-            $element['#value'] = call_user_func_array($value_callable, array(&$element, $input, &$form_state));
-          }
+          $element['#value'] = call_user_func_array($value_callable, array(&$element, $input, &$form_state));
+
           if (!isset($element['#value']) && isset($input)) {
             $element['#value'] = $input;
           }
@@ -1082,9 +1088,8 @@ protected function handleInputElement($form_id, &$element, &$form_state) {
       if (!isset($element['#value'])) {
         // Call #type_value without a second argument to request default_value
         // handling.
-        if (is_callable($value_callable)) {
-          $element['#value'] = call_user_func_array($value_callable, array(&$element, FALSE, &$form_state));
-        }
+        $element['#value'] = call_user_func_array($value_callable, array(&$element, FALSE, &$form_state));
+
         // Final catch. If we haven't set a value yet, use the explicit default
         // value. Avoid image buttons (which come with garbage value), so we
         // only get value for the button actually clicked.
diff --git a/core/lib/Drupal/Core/Render/Element/FormElement.php b/core/lib/Drupal/Core/Render/Element/FormElement.php
index a118f0a..82a4bd2 100644
--- a/core/lib/Drupal/Core/Render/Element/FormElement.php
+++ b/core/lib/Drupal/Core/Render/Element/FormElement.php
@@ -19,6 +19,24 @@
 abstract class FormElement extends RenderElement {
 
   /**
+   * Determines how user input is mapped to an element's #value property.
+   *
+   * @param array $element
+   *   An associative array containing the properties of the element.
+   * @param mixed $input
+   *   The incoming input to populate the form element. If this is FALSE,
+   *   the element's default value should be returned.
+   * @param array $form_state
+   *   An associative array containing the current state of the form.
+   *
+   * @return mixed
+   *   The value to assign to the element.
+   */
+  public static function valueCallback(&$element, $input, &$form_state) {
+    return NULL;
+  }
+
+  /**
    * Form element processing handler for the #ajax form property.
    *
    * @param array $element
diff --git a/core/lib/Drupal/Core/Render/Element/MachineName.php b/core/lib/Drupal/Core/Render/Element/MachineName.php
index 457bb62..f318262 100644
--- a/core/lib/Drupal/Core/Render/Element/MachineName.php
+++ b/core/lib/Drupal/Core/Render/Element/MachineName.php
@@ -51,6 +51,13 @@ public function getInfo() {
   }
 
   /**
+   * {@inheritdoc}
+   */
+  public static function valueCallback(&$element, $input, &$form_state) {
+    return NULL;
+  }
+
+  /**
    * Processes a machine-readable name form element.
    *
    * @param array $element
diff --git a/core/lib/Drupal/Core/Render/Element/Textfield.php b/core/lib/Drupal/Core/Render/Element/Textfield.php
index 7799a03..75b4c4c 100644
--- a/core/lib/Drupal/Core/Render/Element/Textfield.php
+++ b/core/lib/Drupal/Core/Render/Element/Textfield.php
@@ -42,6 +42,17 @@ public function getInfo() {
   }
 
   /**
+   * {@inheritdoc}
+   */
+  public static function valueCallback(&$element, $input, &$form_state) {
+    if ($input !== FALSE && $input !== NULL) {
+      // Equate $input to the form value to ensure it's marked for
+      // validation.
+      return str_replace(array("\r", "\n"), '', $input);
+    }
+  }
+
+  /**
    * Prepares a #type 'textfield' render element for theme_input().
    *
    * @param array $element
diff --git a/core/lib/Drupal/Core/Render/ElementInfoManager.php b/core/lib/Drupal/Core/Render/ElementInfoManager.php
index a60e54d..1d65fb08 100644
--- a/core/lib/Drupal/Core/Render/ElementInfoManager.php
+++ b/core/lib/Drupal/Core/Render/ElementInfoManager.php
@@ -10,6 +10,7 @@
 use Drupal\Core\Cache\CacheBackendInterface;
 use Drupal\Core\Extension\ModuleHandlerInterface;
 use Drupal\Core\Plugin\DefaultPluginManager;
+use Drupal\Core\Render\Element\FormElement;
 
 /**
  * Provides a plugin manager for element plugins.
@@ -64,7 +65,16 @@ protected function buildInfo() {
     $info = $this->moduleHandler->invokeAll('element_info');
 
     foreach ($this->getDefinitions() as $element_type => $definition) {
-      $info[$element_type] = $this->createInstance($element_type)->getInfo();
+      $element = $this->createInstance($element_type);
+      $element_info = $element->getInfo();
+
+      // If this is element is to be used exclusively in a form, denote that it
+      // will receive input, and assign the value callback.
+      if ($element instanceof FormElement) {
+        $element_info['#input'] = TRUE;
+        $element_info['#value_callback'] = array(get_class($element), 'valueCallback');
+      }
+      $info[$element_type] = $element_info;
     }
     foreach ($info as $element_type => $element) {
       $info[$element_type]['#type'] = $element_type;