Commit 3fc6376e authored by Aric Cyr's avatar Aric Cyr Committed by Alex Deucher
Browse files

drm/amd/display: Only round InfoFrame refresh rates 



[Why]
When calculating nominal refresh rates, don't round.
Only the VSIF needs to be rounded.

[How]
Revert rounding change for nominal and just round when forming the
FreeSync VSIF.

Signed-off-by: default avatarAric Cyr <aric.cyr@amd.com>
Reviewed-by: default avatarAnthony Koo <Anthony.Koo@amd.com>
Acked-by: default avatarRodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Acked-by: default avatarHarry Wentland <harry.wentland@amd.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
parent 0062972b

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

+2 −6
Original line number Diff line number Diff line
@@ -524,12 +524,12 @@ static void build_vrr_infopacket_data(const struct mod_vrr_params *vrr, 
		infopacket->sb[6] |= 0x04;



	/* PB7 = FreeSync Minimum refresh rate (Hz) */

	infopacket->sb[7] = (unsigned char)(vrr->min_refresh_in_uhz / 1000000);

	infopacket->sb[7] = (unsigned char)((vrr->min_refresh_in_uhz + 500000) / 1000000);



	/* PB8 = FreeSync Maximum refresh rate (Hz)

	 * Note: We should never go above the field rate of the mode timing set.

	 */

	infopacket->sb[8] = (unsigned char)(vrr->max_refresh_in_uhz / 1000000);

	infopacket->sb[8] = (unsigned char)((vrr->max_refresh_in_uhz + 500000) / 1000000);





	//FreeSync HDR
@@ -747,10 +747,6 @@ void mod_freesync_build_vrr_params(struct mod_freesync *mod_freesync, 
	nominal_field_rate_in_uhz =

			mod_freesync_calc_nominal_field_rate(stream);



	/* Rounded to the nearest Hz */

	nominal_field_rate_in_uhz = 1000000ULL *

			div_u64(nominal_field_rate_in_uhz + 500000, 1000000);



	min_refresh_in_uhz = in_config->min_refresh_in_uhz;

	max_refresh_in_uhz = in_config->max_refresh_in_uhz;

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