From: Alvin Lee <Alvin.Lee2@amd.com>
Date: Fri, 5 Aug 2022 20:18:31 +0000 (-0400)
Subject: drm/amd/display: Don't set DSC for phantom pipes
X-Git-Tag: v6.6.17~6361^2~19^2~201
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=31ec699ac5d8d17c4f696888708bb6b2567dfcd4;p=platform%2Fkernel%2Flinux-rpi.git

drm/amd/display: Don't set DSC for phantom pipes

[Description]
Don't set DSC bit for phantom pipes, not
required since phantom pipe don't have
any actual output

Reviewed-by: Jun Lei <Jun.Lei@amd.com>
Acked-by: Brian Chang <Brian.Chang@amd.com>
Signed-off-by: Alvin Lee <Alvin.Lee2@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
---

diff --git a/drivers/gpu/drm/amd/display/dc/dml/dcn32/dcn32_fpu.c b/drivers/gpu/drm/amd/display/dc/dml/dcn32/dcn32_fpu.c
index 3316c4a64901..8118cfc5b405 100644
--- a/drivers/gpu/drm/amd/display/dc/dml/dcn32/dcn32_fpu.c
+++ b/drivers/gpu/drm/amd/display/dc/dml/dcn32/dcn32_fpu.c
@@ -493,6 +493,7 @@ void dcn32_set_phantom_stream_timing(struct dc *dc,
 						phantom_stream->timing.v_front_porch +
 						phantom_stream->timing.v_sync_width +
 						phantom_bp;
+	phantom_stream->timing.flags.DSC = 0; // Don't need DSC for phantom timing
 }
 
 /**