Commit 44243719 authored by Dmytro Laktyushkin's avatar Dmytro Laktyushkin Committed by Alex Deucher
Browse files

drm/amd/display: Limit nv21 dst_y 



Dst_y can become negative in extreme odm 4to1 cases. While not strictly
invalid, this should be limited to 0 for rq/dlg/ttu calculation.

Reviewed-by: default avatarRodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Signed-off-by: default avatarDmytro Laktyushkin <Dmytro.Laktyushkin@amd.com>
Tested-by: default avatarDaniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
parent 2c30f855

drivers/gpu/drm/amd/display/dc/dml/dcn30/display_rq_dlg_calc_30.c

+3 −1
Original line number Diff line number Diff line
@@ -980,7 +980,7 @@ static void dml_rq_dlg_get_dlg_params(struct display_mode_lib *mode_lib, 


	unsigned int vstartup_start = 0;

	unsigned int dst_x_after_scaler = 0;

	unsigned int dst_y_after_scaler = 0;

	int dst_y_after_scaler = 0;

	double line_wait = 0;

	double dst_y_prefetch = 0;

	double dst_y_per_vm_vblank = 0;
@@ -1171,6 +1171,8 @@ static void dml_rq_dlg_get_dlg_params(struct display_mode_lib *mode_lib, 


	dst_x_after_scaler = get_dst_x_after_scaler(mode_lib, e2e_pipe_param, num_pipes, pipe_idx);

	dst_y_after_scaler = get_dst_y_after_scaler(mode_lib, e2e_pipe_param, num_pipes, pipe_idx);

	if (dst_y_after_scaler < 0)

		dst_y_after_scaler = 0;



	// do some adjustment on the dst_after scaler to account for odm combine mode

	dml_print("DML_DLG: %s: input dst_x_after_scaler                     = %d\n",