diff options
| author | Gwan-gyeong Mun <gwan-gyeong.mun@intel.com> | 2019-11-07 00:26:36 +0300 |
|---|---|---|
| committer | Ville Syrjälä <ville.syrjala@linux.intel.com> | 2019-11-11 17:25:16 +0300 |
| commit | bd8c9cca88765caee0dfa93967c6d8f16b4cbfb9 (patch) | |
| tree | a551a542f0769f6c0faac77c27b9003c9e4b3dd2 /drivers/gpu/drm/i915/display/intel_dp_mst.c | |
| parent | 69a48c1d28e05893607b89515442b993cd5326ed (diff) | |
| download | linux-bd8c9cca88765caee0dfa93967c6d8f16b4cbfb9.tar.xz | |
drm/i915: Split a setting of MSA to MST and SST
The setting of MSA is done by the DDI .pre_enable() hook. And when we are
using MST, the MSA is only set to first mst stream by calling of
DDI .pre_eanble() hook. It raies issues to non-first mst streams.
Wrong MSA or missed MSA packets might show scrambled screen or wrong
screen.
This splits a setting of MSA to MST and SST cases. And In the MST case it
will call a setting of MSA after an allocating of Virtual Channel from
MST encoder pre_enable callback.
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Cc: Stanislav Lisovskiy <stanislav.lisovskiy@intel.com>
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=112212
Fixes: 0c06fa156006 ("drm/i915/dp: Add support of BT.2020 Colorimetry to DP MSA")
Fixes: d4a415dcda35 ("drm/i915: Fix MST oops due to MSA changes")
Signed-off-by: Gwan-gyeong Mun <gwan-gyeong.mun@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191106212636.502471-1-gwan-gyeong.mun@intel.com
Reviewed-by: Lucas De Marchi <lucas.demarchi@intel.com>
[vsyrjala: nuke spurious newline]
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Diffstat (limited to 'drivers/gpu/drm/i915/display/intel_dp_mst.c')
| -rw-r--r-- | drivers/gpu/drm/i915/display/intel_dp_mst.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/display/intel_dp_mst.c b/drivers/gpu/drm/i915/display/intel_dp_mst.c index 27494aa48b0b..21e81830d525 100644 --- a/drivers/gpu/drm/i915/display/intel_dp_mst.c +++ b/drivers/gpu/drm/i915/display/intel_dp_mst.c @@ -345,6 +345,8 @@ static void intel_mst_pre_enable_dp(struct intel_encoder *encoder, */ if (INTEL_GEN(dev_priv) < 12 || !first_mst_stream) intel_ddi_enable_pipe_clock(pipe_config); + + intel_ddi_set_dp_msa(pipe_config, conn_state); } static void intel_mst_enable_dp(struct intel_encoder *encoder, |