diff --git a/include/hardware/gralloc1.h b/include/hardware/gralloc1.h
index a1a2d69..f58403c 100644
--- a/include/hardware/gralloc1.h
+++ b/include/hardware/gralloc1.h
@@ -36,7 +36,10 @@
      * allocate may be NULL, which instructs the device to report whether the
      * given allocation is possible or not. */
     GRALLOC1_CAPABILITY_TEST_ALLOCATE = 1,
-    GRALLOC1_LAST_CAPABILITY = 1,
+    /* If this capability is supported, then the implementation supports
+     * allocating buffers with more than one image layer. */
+    GRALLOC1_CAPABILITY_LAYERED_BUFFERS = 2,
+    GRALLOC1_LAST_CAPABILITY = 2,
 } gralloc1_capability_t;
 
 typedef enum {
@@ -141,7 +144,9 @@
     GRALLOC1_FUNCTION_LOCK = 18,
     GRALLOC1_FUNCTION_LOCK_FLEX = 19,
     GRALLOC1_FUNCTION_UNLOCK = 20,
-    GRALLOC1_LAST_FUNCTION = 20,
+    GRALLOC1_FUNCTION_SET_LAYER_COUNT = 21,
+    GRALLOC1_FUNCTION_GET_LAYER_COUNT = 22,
+    GRALLOC1_LAST_FUNCTION = 22,
 } gralloc1_function_descriptor_t;
 
 typedef enum {
@@ -440,6 +445,30 @@
         gralloc1_device_t* device, gralloc1_buffer_descriptor_t descriptor,
         int32_t /*android_pixel_format_t*/ format);
 
+/* setLayerCount(..., layerCount)
+ * Function descriptor: GRALLOC1_FUNCTION_SET_LAYER_COUNT
+ * Must be provided by all gralloc1 devices that provide the
+ * GRALLOC1_CAPABILITY_LAYERED_BUFFERS capability.
+ *
+ * Sets the number of layers in the buffer.
+ *
+ * A buffer with multiple layers may be used as the backing store of an array
+ * texture. All layers of a buffer share the same characteristics (e.g.,
+ * dimensions, format, usage). Devices that do not support
+ * GRALLOC1_CAPABILITY_LAYERED_BUFFERS must allocate only buffers with a single
+ * layer.
+ *
+ * Parameters:
+ *   layerCount - the desired number of layers, must be non-zero
+ *
+ * Returns GRALLOC1_ERROR_NONE or one of the following errors:
+ *   GRALLOC1_ERROR_BAD_DESCRIPTOR - the buffer descriptor is invalid
+ *   GRALLOC1_ERROR_BAD_VALUE - the layer count is invalid
+ */
+typedef int32_t /*gralloc1_error_t*/ (*GRALLOC1_PFN_SET_LAYER_COUNT)(
+        gralloc1_device_t* device, gralloc1_buffer_descriptor_t descriptor,
+        uint32_t layerCount);
+
 /* setProducerUsage(..., usage)
  * Function descriptor: GRALLOC1_FUNCTION_SET_PRODUCER_USAGE
  * Must be provided by all gralloc1 devices
@@ -564,6 +593,28 @@
         gralloc1_device_t* device, buffer_handle_t descriptor,
         int32_t* outFormat);
 
+/* getLayerCount(..., outLayerCount)
+ * Function descriptor: GRALLOC1_FUNCTION_GET_LAYER_COUNT
+ * Must be provided by all gralloc1 devices that provide the
+ * GRALLOC1_CAPABILITY_LAYERED_BUFFERS capability.
+ *
+ * Gets the number of layers of the buffer.
+ *
+ * See setLayerCount for more information about this value.
+ *
+ * Parameters:
+ *   outLayerCount - the number of layers in the image, must be non-NULL
+ *
+ * Returns GRALLOC1_ERROR_NONE or one of the following errors:
+ *   GRALLOC1_ERROR_BAD_HANDLE - the buffer handle is invalid
+ *   GRALLOC1_ERROR_UNSUPPORTED - the device is unable to retrieve the
+ *       layer count from the buffer; see note [1] in this section's header for
+ *       more information
+ */
+typedef int32_t /*gralloc1_error_t*/ (*GRALLOC1_PFN_GET_LAYER_COUNT)(
+        gralloc1_device_t* device, buffer_handle_t buffer,
+        uint32_t* outLayerCount);
+
 /* getProducerUsage(..., outUsage)
  * Function descriptor: GRALLOC1_FUNCTION_GET_PRODUCER_USAGE
  * Must be provided by all gralloc1 devices