Commit 33df94e1 authored by Guo, Bing's avatar Guo, Bing Committed by Alex Deucher
Browse files

drm/amd/display: Get ceiling for v_total calc 



Updating certain variable blanking calculations to use ceiling function.

Reviewed-by: default avatarChris Park <chris.park@amd.com>
Tested-by: default avatarDaniel Wheeler <daniel.wheeler@amd.com>
Acked-by: default avatarAgustin Gutierrez <agustin.gutierrez@amd.com>
Signed-off-by: default avatarBing Guo <Bing.Guo@amd.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
parent bc39a69a

drivers/gpu/drm/amd/display/modules/freesync/freesync.c

+12 −3
Original line number Diff line number Diff line
@@ -155,9 +155,18 @@ static unsigned int calc_v_total_from_duration( 
	if (duration_in_us > vrr->max_duration_in_us)

		duration_in_us = vrr->max_duration_in_us;



	if (dc_is_hdmi_signal(stream->signal)) {

		uint32_t h_total_up_scaled;



		h_total_up_scaled = stream->timing.h_total * 10000;

		v_total = div_u64((unsigned long long)duration_in_us

					* stream->timing.pix_clk_100hz + (h_total_up_scaled - 1),

					h_total_up_scaled);

	} else {

		v_total = div64_u64(div64_u64(((unsigned long long)(

					duration_in_us) * (stream->timing.pix_clk_100hz / 10)),

					stream->timing.h_total), 1000);

	}



	/* v_total cannot be less than nominal */

	if (v_total < stream->timing.v_total) {