Documentation/gpu: use recommended order of heading markers

While splitting the document up, the headings "shifted" from what pandoc
generated. Use the following order for headings for consistency:

==============
Document title
==============

First
=====

Second
------

Third
~~~~~

Leave the lower level headings as they are; I think those are less
important. Although RST doesn't mandate a specific order ("Rather than
imposing a fixed number and order of section title adornment styles, the
order enforced will be the order as encountered."), having the higher
levels the same overall makes it easier to follow the documents.

[I'm sort of kind of writing the recommendation for docs-next in the
mean time, but this order seems sensible, and is what I'm proposing.]
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/126f42734defac6cbb8496a481d58db7b38461dd.1466506505.git.jani.nikula@intel.com

Documentation/gpu/drm-uapi.rst

+===================
 Userland interfaces
 ===================
 
@@ -14,7 +15,7 @@ Cover generic ioctls and sysfs layout here. We only need high-level
 info, since man pages should cover the rest.
 
 Render nodes
-------------
+============
 
 DRM core provides multiple character-devices for user-space to use.
 Depending on which device is opened, user-space can perform a different
@@ -67,7 +68,7 @@ visible to user-space and accessible beyond open-file boundaries, they
 cannot support render nodes.
 
 VBlank event handling
----------------------
+=====================
 
 The DRM core exposes two vertical blank related ioctls:
 

Documentation/gpu/i915.rst

-drm/i915 Intel GFX Driver
-=========================
+===========================
+ drm/i915 Intel GFX Driver
+===========================
 
 The drm/i915 driver supports all (with the exception of some very early
 models) integrated GFX chipsets with both Intel display and rendering
@@ -7,13 +8,13 @@ blocks. This excludes a set of SoC platforms with an SGX rendering unit,
 those have basic support through the gma500 drm driver.
 
 Core Driver Infrastructure
---------------------------
+==========================
 
 This section covers core driver infrastructure used by both the display
 and the GEM parts of the driver.
 
 Runtime Power Management
-~~~~~~~~~~~~~~~~~~~~~~~~
+------------------------
 
 .. kernel-doc:: drivers/gpu/drm/i915/intel_runtime_pm.c
    :doc: runtime pm
@@ -25,7 +26,7 @@ Runtime Power Management
    :internal:
 
 Interrupt Handling
-~~~~~~~~~~~~~~~~~~
+------------------
 
 .. kernel-doc:: drivers/gpu/drm/i915/i915_irq.c
    :doc: interrupt handling
@@ -40,7 +41,7 @@ Interrupt Handling
    :functions: intel_runtime_pm_enable_interrupts
 
 Intel GVT-g Guest Support(vGPU)
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+-------------------------------
 
 .. kernel-doc:: drivers/gpu/drm/i915/i915_vgpu.c
    :doc: Intel GVT-g guest support
@@ -49,14 +50,14 @@ Intel GVT-g Guest Support(vGPU)
    :internal:
 
 Display Hardware Handling
--------------------------
+=========================
 
 This section covers everything related to the display hardware including
 the mode setting infrastructure, plane, sprite and cursor handling and
 display, output probing and related topics.
 
 Mode Setting Infrastructure
-~~~~~~~~~~~~~~~~~~~~~~~~~~~
+---------------------------
 
 The i915 driver is thus far the only DRM driver which doesn't use the
 common DRM helper code to implement mode setting sequences. Thus it has
@@ -64,7 +65,7 @@ its own tailor-made infrastructure for executing a display configuration
 change.
 
 Frontbuffer Tracking
-~~~~~~~~~~~~~~~~~~~~
+--------------------
 
 .. kernel-doc:: drivers/gpu/drm/i915/intel_frontbuffer.c
    :doc: frontbuffer tracking
@@ -76,7 +77,7 @@ Frontbuffer Tracking
    :functions: i915_gem_track_fb
 
 Display FIFO Underrun Reporting
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+-------------------------------
 
 .. kernel-doc:: drivers/gpu/drm/i915/intel_fifo_underrun.c
    :doc: fifo underrun handling
@@ -85,7 +86,7 @@ Display FIFO Underrun Reporting
    :internal:
 
 Plane Configuration
-~~~~~~~~~~~~~~~~~~~
+-------------------
 
 This section covers plane configuration and composition with the primary
 plane, sprites, cursors and overlays. This includes the infrastructure
@@ -94,7 +95,7 @@ topics like watermark setup and computation, framebuffer compression and
 panel self refresh.
 
 Atomic Plane Helpers
-~~~~~~~~~~~~~~~~~~~~
+--------------------
 
 .. kernel-doc:: drivers/gpu/drm/i915/intel_atomic_plane.c
    :doc: atomic plane helpers
@@ -103,7 +104,7 @@ Atomic Plane Helpers
    :internal:
 
 Output Probing
-~~~~~~~~~~~~~~
+--------------
 
 This section covers output probing and related infrastructure like the
 hotplug interrupt storm detection and mitigation code. Note that the
@@ -111,7 +112,7 @@ i915 driver still uses most of the common DRM helper code for output
 probing, so those sections fully apply.
 
 Hotplug
-~~~~~~~
+-------
 
 .. kernel-doc:: drivers/gpu/drm/i915/intel_hotplug.c
    :doc: Hotplug
@@ -120,7 +121,7 @@ Hotplug
    :internal:
 
 High Definition Audio
-~~~~~~~~~~~~~~~~~~~~~
+---------------------
 
 .. kernel-doc:: drivers/gpu/drm/i915/intel_audio.c
    :doc: High Definition Audio over HDMI and Display Port
@@ -132,7 +133,7 @@ High Definition Audio
    :internal:
 
 Panel Self Refresh PSR (PSR/SRD)
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+--------------------------------
 
 .. kernel-doc:: drivers/gpu/drm/i915/intel_psr.c
    :doc: Panel Self Refresh (PSR/SRD)
@@ -141,7 +142,7 @@ Panel Self Refresh PSR (PSR/SRD)
    :internal:
 
 Frame Buffer Compression (FBC)
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+------------------------------
 
 .. kernel-doc:: drivers/gpu/drm/i915/intel_fbc.c
    :doc: Frame Buffer Compression (FBC)
@@ -150,7 +151,7 @@ Frame Buffer Compression (FBC)
    :internal:
 
 Display Refresh Rate Switching (DRRS)
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+-------------------------------------
 
 .. kernel-doc:: drivers/gpu/drm/i915/intel_dp.c
    :doc: Display Refresh Rate Switching (DRRS)
@@ -174,13 +175,13 @@ Display Refresh Rate Switching (DRRS)
    :functions: intel_dp_drrs_init
 
 DPIO
-~~~~
+----
 
 .. kernel-doc:: drivers/gpu/drm/i915/i915_reg.h
    :doc: DPIO
 
 CSR firmware support for DMC
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+----------------------------
 
 .. kernel-doc:: drivers/gpu/drm/i915/intel_csr.c
    :doc: csr support for dmc
@@ -189,7 +190,7 @@ CSR firmware support for DMC
    :internal:
 
 Video BIOS Table (VBT)
-~~~~~~~~~~~~~~~~~~~~~~
+----------------------
 
 .. kernel-doc:: drivers/gpu/drm/i915/intel_bios.c
    :doc: Video BIOS Table (VBT)
@@ -201,13 +202,13 @@ Video BIOS Table (VBT)
    :internal:
 
 Memory Management and Command Submission
-----------------------------------------
+========================================
 
 This sections covers all things related to the GEM implementation in the
 i915 driver.
 
 Batchbuffer Parsing
-~~~~~~~~~~~~~~~~~~~
+-------------------
 
 .. kernel-doc:: drivers/gpu/drm/i915/i915_cmd_parser.c
    :doc: batch buffer command parser
@@ -216,7 +217,7 @@ Batchbuffer Parsing
    :internal:
 
 Batchbuffer Pools
-~~~~~~~~~~~~~~~~~
+-----------------
 
 .. kernel-doc:: drivers/gpu/drm/i915/i915_gem_batch_pool.c
    :doc: batch pool
@@ -225,7 +226,7 @@ Batchbuffer Pools
    :internal:
 
 Logical Rings, Logical Ring Contexts and Execlists
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+--------------------------------------------------
 
 .. kernel-doc:: drivers/gpu/drm/i915/intel_lrc.c
    :doc: Logical Rings, Logical Ring Contexts and Execlists
@@ -234,7 +235,7 @@ Logical Rings, Logical Ring Contexts and Execlists
    :internal:
 
 Global GTT views
-~~~~~~~~~~~~~~~~
+----------------
 
 .. kernel-doc:: drivers/gpu/drm/i915/i915_gem_gtt.c
    :doc: Global GTT views
@@ -243,25 +244,25 @@ Global GTT views
    :internal:
 
 GTT Fences and Swizzling
-~~~~~~~~~~~~~~~~~~~~~~~~
+------------------------
 
 .. kernel-doc:: drivers/gpu/drm/i915/i915_gem_fence.c
    :internal:
 
 Global GTT Fence Handling
-^^^^^^^^^^^^^^^^^^^^^^^^^
+~~~~~~~~~~~~~~~~~~~~~~~~~
 
 .. kernel-doc:: drivers/gpu/drm/i915/i915_gem_fence.c
    :doc: fence register handling
 
 Hardware Tiling and Swizzling Details
-^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 
 .. kernel-doc:: drivers/gpu/drm/i915/i915_gem_fence.c
    :doc: tiling swizzling details
 
 Object Tiling IOCTLs
-~~~~~~~~~~~~~~~~~~~~
+--------------------
 
 .. kernel-doc:: drivers/gpu/drm/i915/i915_gem_tiling.c
    :internal:
@@ -270,7 +271,7 @@ Object Tiling IOCTLs
    :doc: buffer object tiling
 
 Buffer Object Eviction
-~~~~~~~~~~~~~~~~~~~~~~
+----------------------
 
 This section documents the interface functions for evicting buffer
 objects to make space available in the virtual gpu address spaces. Note
@@ -282,7 +283,7 @@ unified memory architecture) available.
    :internal:
 
 Buffer Object Memory Shrinking
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+------------------------------
 
 This section documents the interface function for shrinking memory usage
 of buffer object caches. Shrinking is used to make main memory
@@ -293,10 +294,10 @@ objects, which has the goal to make space in gpu virtual address spaces.
    :internal:
 
 GuC
----
+===
 
 GuC-specific firmware loader
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+----------------------------
 
 .. kernel-doc:: drivers/gpu/drm/i915/intel_guc_loader.c
    :doc: GuC-specific firmware loader
@@ -305,7 +306,7 @@ GuC-specific firmware loader
    :internal:
 
 GuC-based command submission
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+----------------------------
 
 .. kernel-doc:: drivers/gpu/drm/i915/i915_guc_submission.c
    :doc: GuC-based command submission
@@ -314,31 +315,31 @@ GuC-based command submission
    :internal:
 
 GuC Firmware Layout
-~~~~~~~~~~~~~~~~~~~
+-------------------
 
 .. kernel-doc:: drivers/gpu/drm/i915/intel_guc_fwif.h
    :doc: GuC Firmware Layout
 
 Tracing
--------
+=======
 
 This sections covers all things related to the tracepoints implemented
 in the i915 driver.
 
 i915_ppgtt_create and i915_ppgtt_release
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+----------------------------------------
 
 .. kernel-doc:: drivers/gpu/drm/i915/i915_trace.h
    :doc: i915_ppgtt_create and i915_ppgtt_release tracepoints
 
 i915_context_create and i915_context_free
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+-----------------------------------------
 
 .. kernel-doc:: drivers/gpu/drm/i915/i915_trace.h
    :doc: i915_context_create and i915_context_free tracepoints
 
 switch_mm
-~~~~~~~~~~
+---------
 
 .. kernel-doc:: drivers/gpu/drm/i915/i915_trace.h
    :doc: switch_mm tracepoint

Documentation/gpu/introduction.rst

+============
 Introduction
 ============
 
@@ -16,7 +17,7 @@ found in current kernels.
 [Insert diagram of typical DRM stack here]
 
 Style Guidelines
-----------------
+================
 
 For consistency this documentation uses American English. Abbreviations
 are written as all-uppercase, for example: DRM, KMS, IOCTL, CRTC, and so