meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.19.8/3569-drm-amd-display-fix-dp-stream-enable.patch


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From bf45b96d8d332f785f6458adb98ee68afaffc323 Mon Sep 17 00:00:00 2001
From: Dmytro Laktyushkin <Dmytro.Laktyushkin@amd.com>
Date: Wed, 31 Jul 2019 14:08:45 -0400
Subject: [PATCH 3569/4256] drm/amd/display: fix dp stream enable

A previous odm change broke stream enable by always setting
n_multiply as if odm was on.

This fixes the check for odm by making sure opp count is >1
rather than not 0.

Signed-off-by: Dmytro Laktyushkin <Dmytro.Laktyushkin@amd.com>
Reviewed-by: Charlene Liu <Charlene.Liu@amd.com>
Acked-by: Bhawanpreet Lakha <Bhawanpreet.Lakha@amd.com>
---
 drivers/gpu/drm/amd/display/dc/dcn20/dcn20_hwseq.c          | 4 ++--
 drivers/gpu/drm/amd/display/dc/dcn20/dcn20_stream_encoder.c | 2 +-
 2 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_hwseq.c b/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_hwseq.c
index 125c466ebffa..3bc75176bf2d 100644
--- a/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_hwseq.c
+++ b/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_hwseq.c
@@ -1581,10 +1581,10 @@ void dcn20_unblank_stream(struct pipe_ctx *pipe_ctx,
 	params.link_settings.link_rate = link_settings->link_rate;
 
 	if (dc_is_dp_signal(pipe_ctx->stream->signal)) {
-		if (optc1_is_two_pixels_per_containter(&stream->timing) || params.opp_cnt)
+		if (optc1_is_two_pixels_per_containter(&stream->timing) || params.opp_cnt > 1)
 			params.timing.pix_clk_100hz /= 2;
 		pipe_ctx->stream_res.stream_enc->funcs->dp_set_odm_combine(
-				pipe_ctx->stream_res.stream_enc, params.opp_cnt);
+				pipe_ctx->stream_res.stream_enc, params.opp_cnt > 1);
 		pipe_ctx->stream_res.stream_enc->funcs->dp_unblank(pipe_ctx->stream_res.stream_enc, &params);
 	}
 
diff --git a/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_stream_encoder.c b/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_stream_encoder.c
index 9cfc69ccdb39..b7d977b4b0d5 100644
--- a/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_stream_encoder.c
+++ b/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_stream_encoder.c
@@ -458,7 +458,7 @@ void enc2_stream_encoder_dp_unblank(
 		uint64_t m_vid_l = n_vid;
 
 		/* YCbCr 4:2:0 : Computed VID_M will be 2X the input rate */
-		if (is_two_pixels_per_containter(&param->timing) || param->opp_cnt) {
+		if (is_two_pixels_per_containter(&param->timing) || param->opp_cnt > 1) {
 			/*this logic should be the same in get_pixel_clock_parameters() */
 			n_multiply = 1;
 		}
-- 
2.17.1