Commit 05911836 authored by Leo Ma's avatar Leo Ma Committed by Alex Deucher
Browse files

drm/amd/display: Fix HDMI VSIF V3 incorrect issue 



[Why]
Reported from customer the checksum in AMD VSIF V3 is incorrect and
causing blank screen issue.

[How]
Fix the packet length issue on AMD HDMI VSIF V3.

Reviewed-by: default avatarAnthony Koo <Anthony.Koo@amd.com>
Acked-by: default avatarTom Chung <chiahsuan.chung@amd.com>
Signed-off-by: default avatarLeo Ma <hanghong.ma@amd.com>
Tested-by: default avatarDaniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
parent 615fc502

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

+3 −12
Original line number Diff line number Diff line
@@ -613,10 +613,6 @@ static void build_vrr_infopacket_data_v1(const struct mod_vrr_params *vrr, 
	 * Note: We should never go above the field rate of the mode timing set.

	 */

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



	/* FreeSync HDR */

	infopacket->sb[9] = 0;

	infopacket->sb[10] = 0;

}



static void build_vrr_infopacket_data_v3(const struct mod_vrr_params *vrr,
@@ -684,10 +680,6 @@ static void build_vrr_infopacket_data_v3(const struct mod_vrr_params *vrr, 


	/* PB16 : Reserved bits 7:1, FixedRate bit 0 */

	infopacket->sb[16] = (vrr->state == VRR_STATE_ACTIVE_FIXED) ? 1 : 0;



	//FreeSync HDR

	infopacket->sb[9] = 0;

	infopacket->sb[10] = 0;

}



static void build_vrr_infopacket_fs2_data(enum color_transfer_func app_tf,
@@ -772,8 +764,7 @@ static void build_vrr_infopacket_header_v2(enum signal_type signal, 
		/* HB2  = [Bits 7:5 = 0] [Bits 4:0 = Length = 0x09] */

		infopacket->hb2 = 0x09;



		*payload_size = 0x0A;



		*payload_size = 0x09;

	} else if (dc_is_dp_signal(signal)) {



		/* HEADER */
@@ -822,9 +813,9 @@ static void build_vrr_infopacket_header_v3(enum signal_type signal, 
		infopacket->hb1 = version;



		/* HB2  = [Bits 7:5 = 0] [Bits 4:0 = Length] */

		*payload_size = 0x10;

		infopacket->hb2 = *payload_size - 1; //-1 for checksum

		infopacket->hb2 = 0x10;



		*payload_size = 0x10;

	} else if (dc_is_dp_signal(signal)) {



		/* HEADER */