From: Dmytro Laktyushkin Date: Fri, 8 Nov 2019 21:20:36 +0000 (-0500) Subject: drm/amd/display: fix dml20 min_dst_y_next_start calculation X-Git-Tag: v5.6-rc1~114^2~21^2~57 X-Git-Url: https://asedeno.scripts.mit.edu/gitweb/?a=commitdiff_plain;h=084e1de7b938a00608b36a032c59bf987ff91667;p=linux.git 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 Signed-off-by: Alex Deucher --- 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",