Commit e32df0c7 authored by Wenjing Liu's avatar Wenjing Liu Committed by Alex Deucher
Browse files

drm/amd/display: polling vid stream status in hpo dp blank 



[why]
vid stream control is double bufferred, if we don't wait for video
stream enable set to 0, we may get temporary image corruption
showing on the stream when setting PIXEL_TO_SYMBOL_FIFO_ENABLE to 0.

Reviewed-by: default avatarAriel Bernstein <Eric.Bernstein@amd.com>
Acked-by: default avatarJasdeep Dhillon <jdhillon@amd.com>
Signed-off-by: default avatarWenjing Liu <wenjing.liu@amd.com>
Tested-by: default avatarDaniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
parent 5caa63c7

drivers/gpu/drm/amd/display/dc/dcn31/dcn31_hpo_dp_stream_encoder.c

+3 −3
Original line number Diff line number Diff line
@@ -150,9 +150,9 @@ static void dcn31_hpo_dp_stream_enc_dp_blank( 
	 * 10us*5000=50ms. This covers 41.7ms of minimum 24 Hz mode +

	 * a little more because we may not trust delay accuracy.

	 */

	//REG_WAIT(DP_SYM32_ENC_VID_STREAM_CONTROL,

	//		VID_STREAM_STATUS, 0,

	//		10, 5000);

	REG_WAIT(DP_SYM32_ENC_VID_STREAM_CONTROL,

			VID_STREAM_STATUS, 0,

			10, 5000);



	/* Disable SDP tranmission */

	REG_UPDATE(DP_SYM32_ENC_SDP_CONTROL,