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From 544832fb1443e964b187d1484aebdbb1bb30a4be Mon Sep 17 00:00:00 2001
From: Leo Li <sunpeng.li@amd.com>
Date: Mon, 25 Mar 2019 21:11:07 -0400
Subject: [PATCH 2498/2940] drm/amd/display: Properly guard display_mode_vba
with DCN2
[Why]
display_mode_vba is for DCN2 and up. When building for upstream (DCN1
enabled only), there will be a build error, since display_mode_vba.c/h
is stripped out.
Note that building DCN1 only with internal dal-dev is still fine, since
display_mode_vba.h is not stripped out internally - only in upstream.
The make directives therefore stll work, and so will any #include's.
[How]
Since subsequent generations require DCN2 enabled anyways, guard the
makefile directive for display_mode_vba.o with DCN2. Guard any includes
with DCN2. In addition, guard the entire contents of display_mode_vba.h
with DCN2, to simulate the file being stripped out in upstream.
A forward declaration for 'struct display_mode_lib' also needs to be
added in display_mode_lib.h. Previously, display_mode_vba.h contained
the forward declaration, and display_mode_lib.h in turn included it.
This won't work if mode_vba.h is stripped out, requring mode_lib.h to do
so itself.
Signed-off-by: Leo Li <sunpeng.li@amd.com>
Reviewed-by: Harry Wentland <Harry.Wentland@amd.com>
Acked-by: Bhawanpreet Lakha <Bhawanpreet.Lakha@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
---
drivers/gpu/drm/amd/display/dc/dml/Makefile | 7 ++++---
drivers/gpu/drm/amd/display/dc/dml/display_mode_lib.h | 4 ++++
drivers/gpu/drm/amd/display/dc/dml/display_mode_vba.h | 3 +++
3 files changed, 11 insertions(+), 3 deletions(-)
diff --git a/drivers/gpu/drm/amd/display/dc/dml/Makefile b/drivers/gpu/drm/amd/display/dc/dml/Makefile
index 744fefb67789..0bb7a20675c4 100644
--- a/drivers/gpu/drm/amd/display/dc/dml/Makefile
+++ b/drivers/gpu/drm/amd/display/dc/dml/Makefile
@@ -33,8 +33,9 @@ endif
dml_ccflags := -mhard-float -msse $(cc_stack_align)
CFLAGS_display_mode_lib.o := $(dml_ccflags)
-CFLAGS_display_mode_vba.o := $(dml_ccflags)
+
ifdef CONFIG_DRM_AMD_DC_DCN2_0
+CFLAGS_display_mode_vba.o := $(dml_ccflags)
CFLAGS_display_mode_vba_20.o := $(dml_ccflags)
CFLAGS_display_rq_dlg_calc_20.o := $(dml_ccflags)
endif
@@ -46,10 +47,10 @@ CFLAGS_display_rq_dlg_helpers.o := $(dml_ccflags)
CFLAGS_dml_common_defs.o := $(dml_ccflags)
DML = display_mode_lib.o display_rq_dlg_helpers.o dml1_display_rq_dlg_calc.o \
- dml_common_defs.o display_mode_vba.o
+ dml_common_defs.o
ifdef CONFIG_DRM_AMD_DC_DCN2_0
-DML += dcn20/display_rq_dlg_calc_20.o dcn20/display_mode_vba_20.o
+DML += display_mode_vba.o dcn20/display_rq_dlg_calc_20.o dcn20/display_mode_vba_20.o
endif
AMD_DAL_DML = $(addprefix $(AMDDALPATH)/dc/dml/,$(DML))
diff --git a/drivers/gpu/drm/amd/display/dc/dml/display_mode_lib.h b/drivers/gpu/drm/amd/display/dc/dml/display_mode_lib.h
index f2331c09fad8..61541c431110 100644
--- a/drivers/gpu/drm/amd/display/dc/dml/display_mode_lib.h
+++ b/drivers/gpu/drm/amd/display/dc/dml/display_mode_lib.h
@@ -27,7 +27,9 @@
#include "dml_common_defs.h"
+#ifdef CONFIG_DRM_AMD_DC_DCN2_0
#include "display_mode_vba.h"
+#endif
enum dml_project {
DML_PROJECT_UNDEFINED,
@@ -37,6 +39,8 @@ enum dml_project {
#endif
};
+struct display_mode_lib;
+
struct dml_funcs {
void (*rq_dlg_get_dlg_reg)(
struct display_mode_lib *mode_lib,
diff --git a/drivers/gpu/drm/amd/display/dc/dml/display_mode_vba.h b/drivers/gpu/drm/amd/display/dc/dml/display_mode_vba.h
index 38fc0ab32d7b..4e0183dd634a 100644
--- a/drivers/gpu/drm/amd/display/dc/dml/display_mode_vba.h
+++ b/drivers/gpu/drm/amd/display/dc/dml/display_mode_vba.h
@@ -23,6 +23,8 @@
*
*/
+#ifdef CONFIG_DRM_AMD_DC_DCN2_0
+
#ifndef __DML2_DISPLAY_MODE_VBA_H__
#define __DML2_DISPLAY_MODE_VBA_H__
@@ -847,3 +849,4 @@ double CalculateWriteBackDISPCLK(
unsigned int WritebackChromaLineBufferWidth);
#endif /* _DML2_DISPLAY_MODE_VBA_H_ */
+#endif
--
2.17.1
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