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drm/amd/display: Monitor patch to delay setting ignore MSA bit

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[Why]
Some displays clear ignore MSA bit on mode change, which cause
blackscreen when programming variable vtotals. Ignore MSA bit needs
programming needs to be delayed or re-set to be retained.

[How]
Create patch to delay programming ignore MSA bit after unblanking
stream.

Signed-off-by: Jaehyun Chung <jaehyun.chung@amd.com>
Reviewed-by: Aric Cyr <Aric.Cyr@amd.com>
Acked-by: Anthony Koo <Anthony.Koo@amd.com>
Acked-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Acked-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Jaehyun Chung 2020-02-11 11:19:41 -05:00 committed by Alex Deucher
parent b01f22ec88
commit dc326f61c5
2 changed files with 4 additions and 0 deletions
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3
drivers/gpu/drm/amd/display/dc/core/dc_link.c
View file

@ -3095,6 +3095,9 @@ void core_link_enable_stream(
dc->hwss.unblank_stream(pipe_ctx,
&pipe_ctx->stream->link->cur_link_settings);
if (stream->link->local_sink->edid_caps.panel_patch.delay_ignore_msa > 0)
msleep(stream->link->local_sink->edid_caps.panel_patch.delay_ignore_msa);
if (dc_is_dp_signal(pipe_ctx->stream->signal))
enable_stream_features(pipe_ctx);
#if defined(CONFIG_DRM_AMD_DC_HDCP)

1
drivers/gpu/drm/amd/display/dc/dc_types.h
View file

@ -230,6 +230,7 @@ struct dc_panel_patch {
unsigned int extra_delay_backlight_off;
unsigned int extra_t7_ms;
unsigned int skip_scdc_overwrite;
unsigned int delay_ignore_msa;
};
struct dc_edid_caps {