drm/amd/display: Roll back unit correction

[why]
This Unit correction exposes a Replay corruption.

[how]
This reverts commit:
commit dbd29029c7b5 ("drm/amd/display: Correct unit conversion for vstartup")

Roll back unit conversion until Replay can fix their corruption.

Fixes: dbd29029c7b5 ("drm/amd/display: Correct unit conversion for vstartup")
Reviewed-by: Reza Amini <reza.amini@amd.com>
Acked-by: Wayne Lin <wayne.lin@amd.com>
Signed-off-by: Ovidiu Bunea <ovidiu.bunea@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

diff --git a/drivers/gpu/drm/amd/display/dc/dml/dcn314/dcn314_fpu.c b/drivers/gpu/drm/amd/display/dc/dml/dcn314/dcn314_fpu.c
index 07adb61..ed8ddb7 100644 (file)
--- a/drivers/gpu/drm/amd/display/dc/dml/dcn314/dcn314_fpu.c
+++ b/drivers/gpu/drm/amd/display/dc/dml/dcn314/dcn314_fpu.c
@@ -31,7 +31,6 @@
 #include "dml/dcn20/dcn20_fpu.h"
 #include "dml/dcn31/dcn31_fpu.h"
 #include "dml/display_mode_vba.h"
-#include "dml/dml_inline_defs.h"
 
 struct _vcs_dpi_ip_params_st dcn3_14_ip = {
        .VBlankNomDefaultUS = 668,
@@ -274,25 +273,6 @@ static bool is_dual_plane(enum surface_pixel_format format)
        return format >= SURFACE_PIXEL_FORMAT_VIDEO_BEGIN || format == SURFACE_PIXEL_FORMAT_GRPH_RGBE_ALPHA;
 }
 
-/*
- * micro_sec_to_vert_lines () - converts time to number of vertical lines for a given timing
- *
- * @param: num_us: number of microseconds
- * @return: number of vertical lines. If exact number of vertical lines is not found then
- *          it will round up to next number of lines to guarantee num_us
- */
-static unsigned int micro_sec_to_vert_lines(unsigned int num_us, struct dc_crtc_timing *timing)
-{
-       unsigned int num_lines = 0;
-       unsigned int lines_time_in_ns = 1000.0 *
-                       (((float)timing->h_total * 1000.0) /
-                        ((float)timing->pix_clk_100hz / 10.0));
-
-       num_lines = dml_ceil(1000.0 * num_us / lines_time_in_ns, 1.0);
-
-       return num_lines;
-}
-
 int dcn314_populate_dml_pipes_from_context_fpu(struct dc *dc, struct dc_state *context,
                                               display_e2e_pipe_params_st *pipes,
                                               bool fast_validate)
@@ -309,22 +289,19 @@ int dcn314_populate_dml_pipes_from_context_fpu(struct dc *dc, struct dc_state *c
 
        for (i = 0, pipe_cnt = 0; i < dc->res_pool->pipe_count; i++) {
                struct dc_crtc_timing *timing;
-               unsigned int num_lines = 0;
 
                if (!res_ctx->pipe_ctx[i].stream)
                        continue;
                pipe = &res_ctx->pipe_ctx[i];
                timing = &pipe->stream->timing;
 
-               num_lines = micro_sec_to_vert_lines(dcn3_14_ip.VBlankNomDefaultUS, timing);
-
                if (pipe->stream->adjust.v_total_min != 0)
                        pipes[pipe_cnt].pipe.dest.vtotal = pipe->stream->adjust.v_total_min;
                else
                        pipes[pipe_cnt].pipe.dest.vtotal = timing->v_total;
 
                pipes[pipe_cnt].pipe.dest.vblank_nom = timing->v_total - pipes[pipe_cnt].pipe.dest.vactive;
-               pipes[pipe_cnt].pipe.dest.vblank_nom = min(pipes[pipe_cnt].pipe.dest.vblank_nom, num_lines);
+               pipes[pipe_cnt].pipe.dest.vblank_nom = min(pipes[pipe_cnt].pipe.dest.vblank_nom, dcn3_14_ip.VBlankNomDefaultUS);
                pipes[pipe_cnt].pipe.dest.vblank_nom = max(pipes[pipe_cnt].pipe.dest.vblank_nom, timing->v_sync_width);
                pipes[pipe_cnt].pipe.dest.vblank_nom = min(pipes[pipe_cnt].pipe.dest.vblank_nom, max_allowed_vblank_nom);