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drm/amd/display: Keep PHY active for dp config

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commit 2b02d746c1818baf741f4eeeff9b97ab4b81e1cf upstream.

[Why]
Current hotplug sequence causes temporary hang at the re-entry of the
optimized power state.

[How]
Keep a PHY active when detecting DP signal + DPMS active

Reviewed-by: Nicholas Kazlauskas <Nicholas.Kazlauskas@amd.com>
Acked-by: Qingqing Zhuo <qingqing.zhuo@amd.com>
Signed-off-by: Agustin Gutierrez <agustin.gutierrez@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Agustin Gutierrez 2023-02-21 16:08:15 -05:00 committed by Greg Kroah-Hartman
parent 2bb9121616
commit a9174f0d7a
1 changed files with 5 additions and 0 deletions
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5
drivers/gpu/drm/amd/display/dc/clk_mgr/dcn314/dcn314_clk_mgr.c
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@ -108,6 +108,11 @@ static int dcn314_get_active_display_cnt_wa(
stream->signal == SIGNAL_TYPE_DVI_SINGLE_LINK || stream->signal == SIGNAL_TYPE_DVI_SINGLE_LINK ||
stream->signal == SIGNAL_TYPE_DVI_DUAL_LINK) stream->signal == SIGNAL_TYPE_DVI_DUAL_LINK)
tmds_present = true; tmds_present = true;
/* Checking stream / link detection ensuring that PHY is active*/
if (dc_is_dp_signal(stream->signal) && !stream->dpms_off)
display_count++;
} }
for (i = 0; i < dc->link_count; i++) { for (i = 0; i < dc->link_count; i++) {