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drm/amd/display: Limit nv21 dst_y

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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: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Signed-off-by: Dmytro Laktyushkin <Dmytro.Laktyushkin@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Dmytro Laktyushkin 2020-04-30 15:38:04 -04:00 committed by Alex Deucher
parent 2c30f85551
commit 4424371911
1 changed files with 3 additions and 1 deletions
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4
drivers/gpu/drm/amd/display/dc/dml/dcn30/display_rq_dlg_calc_30.c
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@ -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",