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authorChristian König <christian.koenig@amd.com>2021-09-07 10:07:29 +0300
committerChristian König <christian.koenig@amd.com>2021-09-09 14:25:45 +0300
commitfcd0bbd619b349a03fcf132bfd65ce8bffc581b7 (patch)
tree1aac7794f67936be1c7850f14c048b40b46bd55e
parentb998ba95d2849b6b917a02750bf96f5596937ce4 (diff)
downloadlinux-fcd0bbd619b349a03fcf132bfd65ce8bffc581b7.tar.xz
drm/ttm: add some general module kerneldoc
For now just a brief description of what TTM is all about. Signed-off-by: Christian König <christian.koenig@amd.com> Reviewed-by: Matthew Auld <matthew.auld@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20210908132933.3269-3-christian.koenig@amd.com
-rw-r--r--Documentation/gpu/drm-mm.rst3
-rw-r--r--drivers/gpu/drm/ttm/ttm_module.c12
2 files changed, 14 insertions, 1 deletions
diff --git a/Documentation/gpu/drm-mm.rst b/Documentation/gpu/drm-mm.rst
index 8ca981065e1a..6b7717af4f88 100644
--- a/Documentation/gpu/drm-mm.rst
+++ b/Documentation/gpu/drm-mm.rst
@@ -28,7 +28,8 @@ UMA devices.
The Translation Table Manager (TTM)
===================================
-TTM design background and information belongs here.
+.. kernel-doc:: drivers/gpu/drm/ttm/ttm_module.c
+ :doc: TTM
The Graphics Execution Manager (GEM)
====================================
diff --git a/drivers/gpu/drm/ttm/ttm_module.c b/drivers/gpu/drm/ttm/ttm_module.c
index 997c458f68a9..6c19290f7ea9 100644
--- a/drivers/gpu/drm/ttm/ttm_module.c
+++ b/drivers/gpu/drm/ttm/ttm_module.c
@@ -40,6 +40,18 @@
#include "ttm_module.h"
/**
+ * DOC: TTM
+ *
+ * TTM is a memory manager for accelerator devices with dedicated memory.
+ *
+ * The basic idea is that resources are grouped together in buffer objects of
+ * certain size and TTM handles lifetime, movement and CPU mappings of those
+ * objects.
+ *
+ * TODO: Add more design background and information here.
+ */
+
+/**
* ttm_prot_from_caching - Modify the page protection according to the
* ttm cacing mode
* @caching: The ttm caching mode