From: Alvin Lee <[email protected]> [Why] New formula + cursor change causing underflow on certain configs
[How] Rever to old formula Signed-off-by: Alvin Lee <[email protected]> Reviewed-by: Yongqiang Sun <[email protected]> Acked-by: Rodrigo Siqueira <[email protected]> --- drivers/gpu/drm/amd/display/dc/dcn10/dcn10_optc.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_optc.c b/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_optc.c index 17d96ec6acd8..ec0ab42becba 100644 --- a/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_optc.c +++ b/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_optc.c @@ -299,6 +299,7 @@ void optc1_set_vtg_params(struct timing_generator *optc, uint32_t asic_blank_end; uint32_t v_init; uint32_t v_fp2 = 0; + int32_t vertical_line_start; struct optc *optc1 = DCN10TG_FROM_TG(optc); @@ -315,8 +316,9 @@ void optc1_set_vtg_params(struct timing_generator *optc, patched_crtc_timing.v_border_top; /* if VSTARTUP is before VSYNC, FP2 is the offset, otherwise 0 */ - if (optc1->vstartup_start > asic_blank_end) - v_fp2 = optc1->vstartup_start - asic_blank_end; + vertical_line_start = asic_blank_end - optc1->vstartup_start + 1; + if (vertical_line_start < 0) + v_fp2 = -vertical_line_start; /* Interlace */ if (REG(OTG_INTERLACE_CONTROL)) { -- 2.26.0 _______________________________________________ amd-gfx mailing list [email protected] https://lists.freedesktop.org/mailman/listinfo/amd-gfx
