drm/amd/display: Re-arrange FPU code structure for dcn2x

[Why]
Current FPU code for DCN2x is located under dml/dcn2x.
This is not aligned with DC's general source tree
structure.

[How]
Move FPU code for DCN2x to dml/dcn20.
Reviewed-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Acked-by: Solomon Chiu <solomon.chiu@amd.com>
Signed-off-by: Qingqing Zhuo <qingqing.zhuo@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/display/amdgpu_dm/dc_fpu.c

@@ -52,7 +52,7 @@ static DEFINE_PER_CPU(int, fpu_recursion_depth);
  * This function tells if the code is already under FPU protection or not. A
  * function that works as an API for a set of FPU operations can use this
  * function for checking if the caller invoked it after DC_FP_START(). For
- * example, take a look at dcn2x.c file.
+ * example, take a look at dcn20_fpu.c file.
  */
 inline void dc_assert_fp_enabled(void)
 {

drivers/gpu/drm/amd/display/dc/dcn20/dcn20_resource.c

@@ -35,7 +35,7 @@
 #include "include/irq_service_interface.h"
 #include "dcn20/dcn20_resource.h"
 
-#include "dml/dcn2x/dcn2x.h"
+#include "dml/dcn20/dcn20_fpu.h"
 
 #include "dcn10/dcn10_hubp.h"
 #include "dcn10/dcn10_ipp.h"

drivers/gpu/drm/amd/display/dc/dcn201/dcn201_resource.c

@@ -27,7 +27,7 @@
 #include "dc.h"
 
 #include "dcn201_init.h"
-#include "dml/dcn2x/dcn2x.h"
+#include "dml/dcn20/dcn20_fpu.h"
 #include "resource.h"
 #include "include/irq_service_interface.h"
 #include "dcn201_resource.h"

drivers/gpu/drm/amd/display/dc/dcn21/dcn21_resource.c

@@ -35,7 +35,7 @@
 #include "include/irq_service_interface.h"
 #include "dcn20/dcn20_resource.h"
 
-#include "dml/dcn2x/dcn2x.h"
+#include "dml/dcn20/dcn20_fpu.h"
 
 #include "clk_mgr.h"
 #include "dcn10/dcn10_hubp.h"

drivers/gpu/drm/amd/display/dc/dml/Makefile

@@ -58,7 +58,7 @@ CFLAGS_$(AMDDALPATH)/dc/dml/display_mode_lib.o := $(dml_ccflags)
 
 ifdef CONFIG_DRM_AMD_DC_DCN
 CFLAGS_$(AMDDALPATH)/dc/dml/display_mode_vba.o := $(dml_ccflags)
-CFLAGS_$(AMDDALPATH)/dc/dml/dcn2x/dcn2x.o := $(dml_ccflags)
+CFLAGS_$(AMDDALPATH)/dc/dml/dcn20/dcn20_fpu.o := $(dml_ccflags)
 CFLAGS_$(AMDDALPATH)/dc/dml/dcn20/display_mode_vba_20.o := $(dml_ccflags)
 CFLAGS_$(AMDDALPATH)/dc/dml/dcn20/display_mode_vba_20.o := $(dml_ccflags)
 CFLAGS_$(AMDDALPATH)/dc/dml/dcn20/display_rq_dlg_calc_20.o := $(dml_ccflags)
@@ -93,8 +93,8 @@ CFLAGS_REMOVE_$(AMDDALPATH)/dc/dml/display_rq_dlg_helpers.o := $(dml_rcflags)
 DML = display_mode_lib.o display_rq_dlg_helpers.o dml1_display_rq_dlg_calc.o \
 
 ifdef CONFIG_DRM_AMD_DC_DCN
+DML += dcn20/dcn20_fpu.o
 DML += display_mode_vba.o dcn20/display_rq_dlg_calc_20.o dcn20/display_mode_vba_20.o
-DML += dcn2x/dcn2x.o
 DML += dcn20/display_rq_dlg_calc_20v2.o dcn20/display_mode_vba_20v2.o
 DML += dcn21/display_rq_dlg_calc_21.o dcn21/display_mode_vba_21.o
 DML += dcn30/display_mode_vba_30.o dcn30/display_rq_dlg_calc_30.o

drivers/gpu/drm/amd/display/dc/dml/dcn2x/dcn2x.c → drivers/gpu/drm/amd/display/dc/dml/dcn20/dcn20_fpu.c

@@ -26,7 +26,7 @@
 
 #include "resource.h"
 
-#include "dcn2x.h"
+#include "dcn20_fpu.h"
 
 /**
  * DOC: DCN2x FPU manipulation Overview

drivers/gpu/drm/amd/display/dc/dml/dcn2x/dcn2x.h → drivers/gpu/drm/amd/display/dc/dml/dcn20/dcn20_fpu.h

@@ -24,11 +24,11 @@
  *
  */
 
-#ifndef __DCN2X_H__
-#define __DCN2X_H__
+#ifndef __DCN20_FPU_H__
+#define __DCN20_FPU_H__
 
 void dcn20_populate_dml_writeback_from_context(struct dc *dc,
 					       struct resource_context *res_ctx,
 					       display_e2e_pipe_params_st *pipes);
 
-#endif /* __DCN2X_H__ */
+#endif /* __DCN20_FPU_H__ */