drm/amd/display: handle max_vstartup larger than vblank_end (72942b3d) · Commits · 戴 / test

When vstartup is larger than vblank end we need to set v_fp2 to allow for this early start Signed-off-by:

drivers/gpu/drm/amd/display/dc/dcn10/dcn10_optc.c

+5 −6

Original line number	Diff line number	Diff line
		@@ -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) {