[PATCH 2/8] Documentation/gpu: Add simple doc page for DCHUBBUB

[Rodrigo Siqueira]

Enable the documentation to extract code documentation from dchubbub.h
file.

Cc: Mario Limonciello <mario.limonciello at amd.com>
Cc: Alex Deucher <alexander.deucher at amd.com>
Cc: Harry Wentland <Harry.Wentland at amd.com>
Cc: Hamza Mahfooz <hamza.mahfooz at amd.com>
Signed-off-by: Rodrigo Siqueira <Rodrigo.Siqueira at amd.com>
---
 Documentation/gpu/amdgpu/display/dcn-blocks.rst  | 12 ++++++++++++
 drivers/gpu/drm/amd/display/dc/inc/hw/dchubbub.h |  6 ++++++
 2 files changed, 18 insertions(+)

diff --git a/Documentation/gpu/amdgpu/display/dcn-blocks.rst b/Documentation/gpu/amdgpu/display/dcn-blocks.rst
index 5da34d5b73d8..e4e0a4ddca4e 100644
--- a/Documentation/gpu/amdgpu/display/dcn-blocks.rst
+++ b/Documentation/gpu/amdgpu/display/dcn-blocks.rst
@@ -5,6 +5,18 @@ DCN Blocks
 In this section, you will find some extra details about some of the DCN blocks
 and the code documentation when it is automatically generated.
 
+DCHUBBUB
+--------
+
+.. kernel-doc:: drivers/gpu/drm/amd/display/dc/inc/hw/hubp.h
+   :doc: overview
+
+.. kernel-doc:: drivers/gpu/drm/amd/display/dc/inc/hw/hubp.h
+   :export:
+
+.. kernel-doc:: drivers/gpu/drm/amd/display/dc/inc/hw/hubp.h
+   :internal:
+
 HUBP
 ----
 
diff --git a/drivers/gpu/drm/amd/display/dc/inc/hw/dchubbub.h b/drivers/gpu/drm/amd/display/dc/inc/hw/dchubbub.h
index cea05843990c..580a9f3f07c0 100644
--- a/drivers/gpu/drm/amd/display/dc/inc/hw/dchubbub.h
+++ b/drivers/gpu/drm/amd/display/dc/inc/hw/dchubbub.h
@@ -26,6 +26,12 @@
 #ifndef __DAL_DCHUBBUB_H__
 #define __DAL_DCHUBBUB_H__
 
+/**
+ * DOC: overview
+ *
+ * There is only one common DCHUBBUB. It contains the common request and return
+ * blocks for the Data Fabric Interface that are not clock/power gated.
+ */
 
 enum dcc_control {
 	dcc_control__256_256_xxx,
-- 
2.42.0