drm/amd/display: move FPU-related code from dcn20 to dml folder

Move parts of dcn20 code that uses FPU to dml folder. It aims to isolate
FPU operations as described by series:

drm/amd/display: Introduce FPU directory inside DC
https://patchwork.freedesktop.org/series/93042/

This patch moves the following functions from dcn20_resource to
dml/dcn20_fpu and calls of public functions in dcn20_resource are
wrapped by DC_FP_START/END():

- void dcn20_populate_dml_writeback_from_context
- static bool is_dtbclk_required()
- static enum dcn_zstate_support_state()
- void dcn20_calculate_dlg_params()
- static void swizzle_to_dml_params()
- int dcn20_populate_dml_pipes_from_context()
- void dcn20_calculate_wm()
- void dcn20_cap_soc_clocks()
- void dcn20_update_bounding_box()
- void dcn20_patch_bounding_box()
- bool dcn20_validate_bandwidth_fp()

This movement also affects dcn21/30/31, as dcn20_calculate_dlg_params()
is used by them. For this reason, I included dcn20_fpu headers in
dcn20_resource headers to make dcn20_calculate_dlg_params() visible to
dcn21/30/31.

Three new functions are created to isolate well-delimited FPU
operations:

- void dcn20_fpu_set_wb_arb_params(): set cli_watermark,
  pstate_watermark and time_per_pixel from wb_arb_params (struct
mcif_arb_params), since those uses FPU operations on double types:
WritebackUrgentWatermark, WritebackDRAMClockChangeWatermark, '16.0'.
- void dcn20_fpu_set_wm_ranges(): set min_fill_clk_mhz and
  max_fill_clk_mhz involves FPU calcs on dram_speed_mts (double type);
- void dcn20_fpu_adjust_dppclk(): adjust operation on RequiredDPPCLK
  that is a double.

Signed-off-by: Melissa Wen <mwen@igalia.com>
Acked-by: Alan Liu <HaoPing.Liu@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

1 files changed, 7 insertions, 1 deletions

diff --git a/drivers/gpu/drm/amd/display/dc/dcn21/dcn21_resource.c b/drivers/gpu/drm/amd/display/dc/dcn21/dcn21_resource.c
index e5cc6bf45743..116a8ccf6c93 100644
--- a/drivers/gpu/drm/amd/display/dc/dcn21/dcn21_resource.c
+++ b/drivers/gpu/drm/amd/display/dc/dcn21/dcn21_resource.c
@@ -1363,7 +1363,9 @@ static noinline bool dcn21_validate_bandwidth_fp(struct dc *dc,
 	}
 
 	dcn21_calculate_wm(dc, context, pipes, &pipe_cnt, pipe_split_from, vlevel, fast_validate);
+	DC_FP_START();
 	dcn20_calculate_dlg_params(dc, context, pipes, pipe_cnt, vlevel);
+	DC_FP_END();
 
 	BW_VAL_TRACE_END_WATERMARKS();
 
@@ -1902,9 +1904,13 @@ static int dcn21_populate_dml_pipes_from_context(
 		display_e2e_pipe_params_st *pipes,
 		bool fast_validate)
 {
-	uint32_t pipe_cnt = dcn20_populate_dml_pipes_from_context(dc, context, pipes, fast_validate);
+	uint32_t pipe_cnt;
 	int i;
 
+	DC_FP_START();
+	pipe_cnt = dcn20_populate_dml_pipes_from_context(dc, context, pipes, fast_validate);
+	DC_FP_END();
+
 	for (i = 0; i < pipe_cnt; i++) {
 
 		pipes[i].pipe.src.hostvm = dc->res_pool->hubbub->riommu_active;