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+.. -*- coding: utf-8; mode: rst -*-
+
+.. _VIDIOC_SUBDEV_ENUM_MBUS_CODE:
+
+**********************************
+ioctl VIDIOC_SUBDEV_ENUM_MBUS_CODE
+**********************************
+
+Name
+====
+
+VIDIOC_SUBDEV_ENUM_MBUS_CODE - Enumerate media bus formats
+
+
+Synopsis
+========
+
+.. cpp:function:: int ioctl( int fd, int request, struct v4l2_subdev_mbus_code_enum * argp )
+
+
+Arguments
+=========
+
+``fd``
+    File descriptor returned by :ref:`open() <func-open>`.
+
+``request``
+    VIDIOC_SUBDEV_ENUM_MBUS_CODE
+
+``argp``
+
+
+Description
+===========
+
+To enumerate media bus formats available at a given sub-device pad
+applications initialize the ``pad``, ``which`` and ``index`` fields of
+struct
+:ref:`v4l2_subdev_mbus_code_enum <v4l2-subdev-mbus-code-enum>` and
+call the :ref:`VIDIOC_SUBDEV_ENUM_MBUS_CODE` ioctl with a pointer to this
+structure. Drivers fill the rest of the structure or return an ``EINVAL``
+error code if either the ``pad`` or ``index`` are invalid. All media bus
+formats are enumerable by beginning at index zero and incrementing by
+one until ``EINVAL`` is returned.
+
+Available media bus formats may depend on the current 'try' formats at
+other pads of the sub-device, as well as on the current active links.
+See :ref:`VIDIOC_SUBDEV_G_FMT` for more
+information about the try formats.
+
+
+.. _v4l2-subdev-mbus-code-enum:
+
+.. flat-table:: struct v4l2_subdev_mbus_code_enum
+    :header-rows:  0
+    :stub-columns: 0
+    :widths:       1 1 2
+
+
+    -  .. row 1
+
+       -  __u32
+
+       -  ``pad``
+
+       -  Pad number as reported by the media controller API.
+
+    -  .. row 2
+
+       -  __u32
+
+       -  ``index``
+
+       -  Number of the format in the enumeration, set by the application.
+
+    -  .. row 3
+
+       -  __u32
+
+       -  ``code``
+
+       -  The media bus format code, as defined in
+	  :ref:`v4l2-mbus-format`.
+
+    -  .. row 4
+
+       -  __u32
+
+       -  ``which``
+
+       -  Media bus format codes to be enumerated, from enum
+	  :ref:`v4l2_subdev_format_whence <v4l2-subdev-format-whence>`.
+
+    -  .. row 5
+
+       -  __u32
+
+       -  ``reserved``\ [8]
+
+       -  Reserved for future extensions. Applications and drivers must set
+	  the array to zero.
+
+
+Return Value
+============
+
+On success 0 is returned, on error -1 and the ``errno`` variable is set
+appropriately. The generic error codes are described at the
+:ref:`Generic Error Codes <gen-errors>` chapter.
+
+EINVAL
+    The struct
+    :ref:`v4l2_subdev_mbus_code_enum <v4l2-subdev-mbus-code-enum>`
+    ``pad`` references a non-existing pad, or the ``index`` field is out
+    of bounds.