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authorRodrigo Siqueira <Rodrigo.Siqueira@amd.com>2024-01-22 14:24:54 -0700
committerAlex Deucher <alexander.deucher@amd.com>2024-01-29 15:34:17 -0500
commitee0a54a6ef6b61588bf97e9d35ff80f4e1a1de05 (patch)
tree662deac538c9d0a00e4b991348ef8c3a484922a8
parenta91cf53a1077557f6b7ae6bdfdbc86804f26e79d (diff)
Documentation/gpu: Add basic page for HUBP
Create the HUBP documentation page and add the doc references to extract the HUBP code documentation. Cc: Mario Limonciello <mario.limonciello@amd.com> Cc: Alex Deucher <alexander.deucher@amd.com> Cc: Harry Wentland <Harry.Wentland@amd.com> Cc: Hamza Mahfooz <hamza.mahfooz@amd.com> Cc: Christian König <christian.koenig@amd.com> Cc: Aurabindo Pillai <aurabindo.pillai@amd.com> Reviewed-by: Mario Limonciello <mario.limonciello@amd.com> Acked-by: Christian König <christian.koenig@amd.com> Acked-by: Hamza Mahfooz <hamza.mahfooz@amd.com> Signed-off-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
-rw-r--r--Documentation/gpu/amdgpu/display/dcn-blocks.rst18
-rw-r--r--Documentation/gpu/amdgpu/display/index.rst1
-rw-r--r--drivers/gpu/drm/amd/display/dc/inc/hw/hubp.h13
3 files changed, 31 insertions, 1 deletions
diff --git a/Documentation/gpu/amdgpu/display/dcn-blocks.rst b/Documentation/gpu/amdgpu/display/dcn-blocks.rst
new file mode 100644
index 000000000000..5da34d5b73d8
--- /dev/null
+++ b/Documentation/gpu/amdgpu/display/dcn-blocks.rst
@@ -0,0 +1,18 @@
+==========
+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.
+
+HUBP
+----
+
+.. 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:
diff --git a/Documentation/gpu/amdgpu/display/index.rst b/Documentation/gpu/amdgpu/display/index.rst
index f8a4f53d70d8..b09d1434754d 100644
--- a/Documentation/gpu/amdgpu/display/index.rst
+++ b/Documentation/gpu/amdgpu/display/index.rst
@@ -28,5 +28,6 @@ table of content:
display-manager.rst
dc-debug.rst
dcn-overview.rst
+ dcn-blocks.rst
mpo-overview.rst
dc-glossary.rst
diff --git a/drivers/gpu/drm/amd/display/dc/inc/hw/hubp.h b/drivers/gpu/drm/amd/display/dc/inc/hw/hubp.h
index 7f3f9b69e903..dedc5370023e 100644
--- a/drivers/gpu/drm/amd/display/dc/inc/hw/hubp.h
+++ b/drivers/gpu/drm/amd/display/dc/inc/hw/hubp.h
@@ -26,13 +26,24 @@
#ifndef __DAL_HUBP_H__
#define __DAL_HUBP_H__
+/**
+ * DOC: overview
+ *
+ * Display Controller Hub (DCHUB) is the gateway between the Scalable Data Port
+ * (SDP) and DCN. This component has multiple features, such as memory
+ * arbitration, rotation, and cursor manipulation.
+ *
+ * There is one HUBP allocated per pipe, which fetches data and converts
+ * different pixel formats (i.e. ARGB8888, NV12, etc) into linear, interleaved
+ * and fixed-depth streams of pixel data.
+ */
+
#include "mem_input.h"
#include "cursor_reg_cache.h"
#define OPP_ID_INVALID 0xf
#define MAX_TTU 0xffffff
-
enum cursor_pitch {
CURSOR_PITCH_64_PIXELS = 0,
CURSOR_PITCH_128_PIXELS,