From 3203b77954977f6e42bd469ce6cf8bfaaa3d07d1 Mon Sep 17 00:00:00 2001 From: Dmytro Laktyushkin Date: Fri, 8 Nov 2019 16:20:36 -0500 Subject: [PATCH 4688/4736] drm/amd/display: fix dml20 min_dst_y_next_start calculation Bring this calculation in line with HW programming guide. Signed-off-by: Dmytro Laktyushkin Reviewed-by: Tony Cheng Acked-by: Leo Li --- .../gpu/drm/amd/display/dc/dml/dcn20/display_rq_dlg_calc_20.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/drivers/gpu/drm/amd/display/dc/dml/dcn20/display_rq_dlg_calc_20.c b/drivers/gpu/drm/amd/display/dc/dml/dcn20/display_rq_dlg_calc_20.c index 2c7455e22a65..9df24ececcec 100644 --- a/drivers/gpu/drm/amd/display/dc/dml/dcn20/display_rq_dlg_calc_20.c +++ b/drivers/gpu/drm/amd/display/dc/dml/dcn20/display_rq_dlg_calc_20.c @@ -929,8 +929,7 @@ static void dml20_rq_dlg_get_dlg_params(struct display_mode_lib *mode_lib, min_dst_y_ttu_vblank = min_ttu_vblank * pclk_freq_in_mhz / (double) htotal; dlg_vblank_start = interlaced ? (vblank_start / 2) : vblank_start; - disp_dlg_regs->min_dst_y_next_start = (unsigned int) (((double) dlg_vblank_start - + min_dst_y_ttu_vblank) * dml_pow(2, 2)); + disp_dlg_regs->min_dst_y_next_start = (unsigned int) ((double) dlg_vblank_start * dml_pow(2, 2)); ASSERT(disp_dlg_regs->min_dst_y_next_start < (unsigned int) dml_pow(2, 18)); dml_print("DML_DLG: %s: min_dcfclk_mhz = %3.2f\n", -- 2.17.1