forked from Minki/linux
64292b3336
Fixes the following warning:
../include/drm/drm_atomic_state_helper.h:1: warning: no structured comments found
Fixes: 9ef8a9dc4b ("drm: Extract drm_atomic_state_helper.[hc]")
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Cc: Daniel Vetter <daniel.vetter@intel.com>
Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Cc: Maxime Ripard <mripard@kernel.org>
Cc: Sean Paul <sean@poorly.run>
Cc: David Airlie <airlied@linux.ie>
Cc: Daniel Vetter <daniel@ffwll.ch>
Cc: dri-devel@lists.freedesktop.org
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Sean Paul <seanpaul@chromium.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20191007151921.27099-1-sean@poorly.run
414 lines
10 KiB
ReStructuredText
414 lines
10 KiB
ReStructuredText
=============================
|
|
Mode Setting Helper Functions
|
|
=============================
|
|
|
|
The DRM subsystem aims for a strong separation between core code and helper
|
|
libraries. Core code takes care of general setup and teardown and decoding
|
|
userspace requests to kernel internal objects. Everything else is handled by a
|
|
large set of helper libraries, which can be combined freely to pick and choose
|
|
for each driver what fits, and avoid shared code where special behaviour is
|
|
needed.
|
|
|
|
This distinction between core code and helpers is especially strong in the
|
|
modesetting code, where there's a shared userspace ABI for all drivers. This is
|
|
in contrast to the render side, where pretty much everything (with very few
|
|
exceptions) can be considered optional helper code.
|
|
|
|
There are a few areas these helpers can grouped into:
|
|
|
|
* Helpers to implement modesetting. The important ones here are the atomic
|
|
helpers. Old drivers still often use the legacy CRTC helpers. They both share
|
|
the same set of common helper vtables. For really simple drivers (anything
|
|
that would have been a great fit in the deprecated fbdev subsystem) there's
|
|
also the simple display pipe helpers.
|
|
|
|
* There's a big pile of helpers for handling outputs. First the generic bridge
|
|
helpers for handling encoder and transcoder IP blocks. Second the panel helpers
|
|
for handling panel-related information and logic. Plus then a big set of
|
|
helpers for the various sink standards (DisplayPort, HDMI, MIPI DSI). Finally
|
|
there's also generic helpers for handling output probing, and for dealing with
|
|
EDIDs.
|
|
|
|
* The last group of helpers concerns itself with the frontend side of a display
|
|
pipeline: Planes, handling rectangles for visibility checking and scissoring,
|
|
flip queues and assorted bits.
|
|
|
|
Modeset Helper Reference for Common Vtables
|
|
===========================================
|
|
|
|
.. kernel-doc:: include/drm/drm_modeset_helper_vtables.h
|
|
:doc: overview
|
|
|
|
.. kernel-doc:: include/drm/drm_modeset_helper_vtables.h
|
|
:internal:
|
|
|
|
.. _drm_atomic_helper:
|
|
|
|
Atomic Modeset Helper Functions Reference
|
|
=========================================
|
|
|
|
Overview
|
|
--------
|
|
|
|
.. kernel-doc:: drivers/gpu/drm/drm_atomic_helper.c
|
|
:doc: overview
|
|
|
|
Implementing Asynchronous Atomic Commit
|
|
---------------------------------------
|
|
|
|
.. kernel-doc:: drivers/gpu/drm/drm_atomic_helper.c
|
|
:doc: implementing nonblocking commit
|
|
|
|
Helper Functions Reference
|
|
--------------------------
|
|
|
|
.. kernel-doc:: include/drm/drm_atomic_helper.h
|
|
:internal:
|
|
|
|
.. kernel-doc:: drivers/gpu/drm/drm_atomic_helper.c
|
|
:export:
|
|
|
|
Atomic State Reset and Initialization
|
|
-------------------------------------
|
|
|
|
.. kernel-doc:: drivers/gpu/drm/drm_atomic_state_helper.c
|
|
:doc: atomic state reset and initialization
|
|
|
|
Atomic State Helper Reference
|
|
-----------------------------
|
|
|
|
.. kernel-doc:: drivers/gpu/drm/drm_atomic_state_helper.c
|
|
:export:
|
|
|
|
Simple KMS Helper Reference
|
|
===========================
|
|
|
|
.. kernel-doc:: drivers/gpu/drm/drm_simple_kms_helper.c
|
|
:doc: overview
|
|
|
|
.. kernel-doc:: include/drm/drm_simple_kms_helper.h
|
|
:internal:
|
|
|
|
.. kernel-doc:: drivers/gpu/drm/drm_simple_kms_helper.c
|
|
:export:
|
|
|
|
fbdev Helper Functions Reference
|
|
================================
|
|
|
|
.. kernel-doc:: drivers/gpu/drm/drm_fb_helper.c
|
|
:doc: fbdev helpers
|
|
|
|
.. kernel-doc:: include/drm/drm_fb_helper.h
|
|
:internal:
|
|
|
|
.. kernel-doc:: drivers/gpu/drm/drm_fb_helper.c
|
|
:export:
|
|
|
|
format Helper Functions Reference
|
|
=================================
|
|
|
|
.. kernel-doc:: drivers/gpu/drm/drm_format_helper.c
|
|
:export:
|
|
|
|
Framebuffer CMA Helper Functions Reference
|
|
==========================================
|
|
|
|
.. kernel-doc:: drivers/gpu/drm/drm_fb_cma_helper.c
|
|
:doc: framebuffer cma helper functions
|
|
|
|
.. kernel-doc:: drivers/gpu/drm/drm_fb_cma_helper.c
|
|
:export:
|
|
|
|
Framebuffer GEM Helper Reference
|
|
================================
|
|
|
|
.. kernel-doc:: drivers/gpu/drm/drm_gem_framebuffer_helper.c
|
|
:doc: overview
|
|
|
|
.. kernel-doc:: drivers/gpu/drm/drm_gem_framebuffer_helper.c
|
|
:export:
|
|
|
|
.. _drm_bridges:
|
|
|
|
Bridges
|
|
=======
|
|
|
|
Overview
|
|
--------
|
|
|
|
.. kernel-doc:: drivers/gpu/drm/drm_bridge.c
|
|
:doc: overview
|
|
|
|
Default bridge callback sequence
|
|
--------------------------------
|
|
|
|
.. kernel-doc:: drivers/gpu/drm/drm_bridge.c
|
|
:doc: bridge callbacks
|
|
|
|
|
|
Bridge Helper Reference
|
|
-------------------------
|
|
|
|
.. kernel-doc:: include/drm/drm_bridge.h
|
|
:internal:
|
|
|
|
.. kernel-doc:: drivers/gpu/drm/drm_bridge.c
|
|
:export:
|
|
|
|
Panel-Bridge Helper Reference
|
|
-----------------------------
|
|
|
|
.. kernel-doc:: drivers/gpu/drm/bridge/panel.c
|
|
:export:
|
|
|
|
.. _drm_panel_helper:
|
|
|
|
Panel Helper Reference
|
|
======================
|
|
|
|
.. kernel-doc:: drivers/gpu/drm/drm_panel.c
|
|
:doc: drm panel
|
|
|
|
.. kernel-doc:: include/drm/drm_panel.h
|
|
:internal:
|
|
|
|
.. kernel-doc:: drivers/gpu/drm/drm_panel.c
|
|
:export:
|
|
|
|
.. kernel-doc:: drivers/gpu/drm/drm_panel_orientation_quirks.c
|
|
:export:
|
|
|
|
Panel Self Refresh Helper Reference
|
|
===================================
|
|
|
|
.. kernel-doc:: drivers/gpu/drm/drm_self_refresh_helper.c
|
|
:doc: overview
|
|
|
|
.. kernel-doc:: drivers/gpu/drm/drm_self_refresh_helper.c
|
|
:export:
|
|
|
|
HDCP Helper Functions Reference
|
|
===============================
|
|
|
|
.. kernel-doc:: drivers/gpu/drm/drm_hdcp.c
|
|
:export:
|
|
|
|
Display Port Helper Functions Reference
|
|
=======================================
|
|
|
|
.. kernel-doc:: drivers/gpu/drm/drm_dp_helper.c
|
|
:doc: dp helpers
|
|
|
|
.. kernel-doc:: include/drm/drm_dp_helper.h
|
|
:internal:
|
|
|
|
.. kernel-doc:: drivers/gpu/drm/drm_dp_helper.c
|
|
:export:
|
|
|
|
Display Port CEC Helper Functions Reference
|
|
===========================================
|
|
|
|
.. kernel-doc:: drivers/gpu/drm/drm_dp_cec.c
|
|
:doc: dp cec helpers
|
|
|
|
.. kernel-doc:: drivers/gpu/drm/drm_dp_cec.c
|
|
:export:
|
|
|
|
Display Port Dual Mode Adaptor Helper Functions Reference
|
|
=========================================================
|
|
|
|
.. kernel-doc:: drivers/gpu/drm/drm_dp_dual_mode_helper.c
|
|
:doc: dp dual mode helpers
|
|
|
|
.. kernel-doc:: include/drm/drm_dp_dual_mode_helper.h
|
|
:internal:
|
|
|
|
.. kernel-doc:: drivers/gpu/drm/drm_dp_dual_mode_helper.c
|
|
:export:
|
|
|
|
Display Port MST Helpers
|
|
========================
|
|
|
|
Overview
|
|
--------
|
|
|
|
.. kernel-doc:: drivers/gpu/drm/drm_dp_mst_topology.c
|
|
:doc: dp mst helper
|
|
|
|
.. kernel-doc:: drivers/gpu/drm/drm_dp_mst_topology.c
|
|
:doc: Branch device and port refcounting
|
|
|
|
Functions Reference
|
|
-------------------
|
|
|
|
.. kernel-doc:: include/drm/drm_dp_mst_helper.h
|
|
:internal:
|
|
|
|
.. kernel-doc:: drivers/gpu/drm/drm_dp_mst_topology.c
|
|
:export:
|
|
|
|
Topology Lifetime Internals
|
|
---------------------------
|
|
|
|
These functions aren't exported to drivers, but are documented here to help make
|
|
the MST topology helpers easier to understand
|
|
|
|
.. kernel-doc:: drivers/gpu/drm/drm_dp_mst_topology.c
|
|
:functions: drm_dp_mst_topology_try_get_mstb drm_dp_mst_topology_get_mstb
|
|
drm_dp_mst_topology_put_mstb
|
|
drm_dp_mst_topology_try_get_port drm_dp_mst_topology_get_port
|
|
drm_dp_mst_topology_put_port
|
|
drm_dp_mst_get_mstb_malloc drm_dp_mst_put_mstb_malloc
|
|
|
|
MIPI DBI Helper Functions Reference
|
|
===================================
|
|
|
|
.. kernel-doc:: drivers/gpu/drm/drm_mipi_dbi.c
|
|
:doc: overview
|
|
|
|
.. kernel-doc:: include/drm/drm_mipi_dbi.h
|
|
:internal:
|
|
|
|
.. kernel-doc:: drivers/gpu/drm/drm_mipi_dbi.c
|
|
:export:
|
|
|
|
MIPI DSI Helper Functions Reference
|
|
===================================
|
|
|
|
.. kernel-doc:: drivers/gpu/drm/drm_mipi_dsi.c
|
|
:doc: dsi helpers
|
|
|
|
.. kernel-doc:: include/drm/drm_mipi_dsi.h
|
|
:internal:
|
|
|
|
.. kernel-doc:: drivers/gpu/drm/drm_mipi_dsi.c
|
|
:export:
|
|
|
|
Display Stream Compression Helper Functions Reference
|
|
=====================================================
|
|
|
|
.. kernel-doc:: drivers/gpu/drm/drm_dsc.c
|
|
:doc: dsc helpers
|
|
|
|
.. kernel-doc:: include/drm/drm_dsc.h
|
|
:internal:
|
|
|
|
.. kernel-doc:: drivers/gpu/drm/drm_dsc.c
|
|
:export:
|
|
|
|
Output Probing Helper Functions Reference
|
|
=========================================
|
|
|
|
.. kernel-doc:: drivers/gpu/drm/drm_probe_helper.c
|
|
:doc: output probing helper overview
|
|
|
|
.. kernel-doc:: drivers/gpu/drm/drm_probe_helper.c
|
|
:export:
|
|
|
|
EDID Helper Functions Reference
|
|
===============================
|
|
|
|
.. kernel-doc:: include/drm/drm_edid.h
|
|
:internal:
|
|
|
|
.. kernel-doc:: drivers/gpu/drm/drm_edid.c
|
|
:export:
|
|
|
|
SCDC Helper Functions Reference
|
|
===============================
|
|
|
|
.. kernel-doc:: drivers/gpu/drm/drm_scdc_helper.c
|
|
:doc: scdc helpers
|
|
|
|
.. kernel-doc:: include/drm/drm_scdc_helper.h
|
|
:internal:
|
|
|
|
.. kernel-doc:: drivers/gpu/drm/drm_scdc_helper.c
|
|
:export:
|
|
|
|
HDMI Infoframes Helper Reference
|
|
================================
|
|
|
|
Strictly speaking this is not a DRM helper library but generally useable
|
|
by any driver interfacing with HDMI outputs like v4l or alsa drivers.
|
|
But it nicely fits into the overall topic of mode setting helper
|
|
libraries and hence is also included here.
|
|
|
|
.. kernel-doc:: include/linux/hdmi.h
|
|
:internal:
|
|
|
|
.. kernel-doc:: drivers/video/hdmi.c
|
|
:export:
|
|
|
|
Rectangle Utilities Reference
|
|
=============================
|
|
|
|
.. kernel-doc:: include/drm/drm_rect.h
|
|
:doc: rect utils
|
|
|
|
.. kernel-doc:: include/drm/drm_rect.h
|
|
:internal:
|
|
|
|
.. kernel-doc:: drivers/gpu/drm/drm_rect.c
|
|
:export:
|
|
|
|
Flip-work Helper Reference
|
|
==========================
|
|
|
|
.. kernel-doc:: include/drm/drm_flip_work.h
|
|
:doc: flip utils
|
|
|
|
.. kernel-doc:: include/drm/drm_flip_work.h
|
|
:internal:
|
|
|
|
.. kernel-doc:: drivers/gpu/drm/drm_flip_work.c
|
|
:export:
|
|
|
|
Auxiliary Modeset Helpers
|
|
=========================
|
|
|
|
.. kernel-doc:: drivers/gpu/drm/drm_modeset_helper.c
|
|
:doc: aux kms helpers
|
|
|
|
.. kernel-doc:: drivers/gpu/drm/drm_modeset_helper.c
|
|
:export:
|
|
|
|
OF/DT Helpers
|
|
=============
|
|
|
|
.. kernel-doc:: drivers/gpu/drm/drm_of.c
|
|
:doc: overview
|
|
|
|
.. kernel-doc:: drivers/gpu/drm/drm_of.c
|
|
:export:
|
|
|
|
Legacy Plane Helper Reference
|
|
=============================
|
|
|
|
.. kernel-doc:: drivers/gpu/drm/drm_plane_helper.c
|
|
:doc: overview
|
|
|
|
.. kernel-doc:: drivers/gpu/drm/drm_plane_helper.c
|
|
:export:
|
|
|
|
Legacy CRTC/Modeset Helper Functions Reference
|
|
==============================================
|
|
|
|
.. kernel-doc:: drivers/gpu/drm/drm_crtc_helper.c
|
|
:doc: overview
|
|
|
|
.. kernel-doc:: drivers/gpu/drm/drm_crtc_helper.c
|
|
:export:
|
|
|
|
SHMEM GEM Helper Reference
|
|
==========================
|
|
|
|
.. kernel-doc:: drivers/gpu/drm/drm_gem_shmem_helper.c
|
|
:doc: overview
|
|
|
|
.. kernel-doc:: include/drm/drm_gem_shmem_helper.h
|
|
:internal:
|
|
|
|
.. kernel-doc:: drivers/gpu/drm/drm_gem_shmem_helper.c
|
|
:export:
|