From 72942b3de8dadf92095cd14ca1aeb92c54280799 Mon Sep 17 00:00:00 2001 From: Dmytro Laktyushkin Date: Fri, 14 Sep 2018 15:32:33 -0400 Subject: [PATCH] drm/amd/display: handle max_vstartup larger than vblank_end When vstartup is larger than vblank end we need to set v_fp2 to allow for this early start Signed-off-by: Dmytro Laktyushkin Reviewed-by: Tony Cheng Acked-by: Bhawanpreet Lakha Signed-off-by: Alex Deucher --- drivers/gpu/drm/amd/display/dc/dcn10/dcn10_optc.c | 11 +++++------ 1 file changed, 5 insertions(+), 6 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 54626682bab2..47f80e0e8be8 100644 --- a/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_optc.c +++ b/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_optc.c @@ -274,10 +274,12 @@ void optc1_program_timing( * program the reg for interrupt postition. */ vertical_line_start = asic_blank_end - optc->dlg_otg_param.vstartup_start + 1; - if (vertical_line_start < 0) { - ASSERT(0); + v_fp2 = 0; + if (vertical_line_start < 0) + v_fp2 = -vertical_line_start; + if (vertical_line_start < 0) vertical_line_start = 0; - } + REG_SET(OTG_VERTICAL_INTERRUPT2_POSITION, 0, OTG_VERTICAL_INTERRUPT2_LINE_START, vertical_line_start); @@ -296,9 +298,6 @@ void optc1_program_timing( if (patched_crtc_timing.flags.INTERLACE == 1) field_num = 1; } - v_fp2 = 0; - if (optc->dlg_otg_param.vstartup_start > asic_blank_end) - v_fp2 = optc->dlg_otg_param.vstartup_start > asic_blank_end; /* Interlace */ if (patched_crtc_timing.flags.INTERLACE == 1) { -- 2.30.2