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authorMark Brown <broonie@kernel.org>2018-07-23 18:02:28 +0100
committerMark Brown <broonie@kernel.org>2018-07-23 18:02:28 +0100
commit0afdd676f6e575478634d961286094169adbc50d (patch)
treedc04a98e56287b9375626457c6cdd56062e5f899 /drivers/gpu/drm/i915/intel_dp_mst.c
parente594a0636b0213d058aec2406e13f276b70791ed (diff)
parenteef5ba1aa148ca5e6deb1e0aa1de797fa4e12cb7 (diff)
Merge branch 'i2c/smbus_xfer_unlock-immutable' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux into regmap-4.19 for sccb dependency
Diffstat (limited to 'drivers/gpu/drm/i915/intel_dp_mst.c')
-rw-r--r--drivers/gpu/drm/i915/intel_dp_mst.c6
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/intel_dp_mst.c b/drivers/gpu/drm/i915/intel_dp_mst.c
index 9e6956c08688..5890500a3a8b 100644
--- a/drivers/gpu/drm/i915/intel_dp_mst.c
+++ b/drivers/gpu/drm/i915/intel_dp_mst.c
@@ -48,6 +48,9 @@ static bool intel_dp_mst_compute_config(struct intel_encoder *encoder,
bool reduce_m_n = drm_dp_has_quirk(&intel_dp->desc,
DP_DPCD_QUIRK_LIMITED_M_N);
+ if (adjusted_mode->flags & DRM_MODE_FLAG_DBLSCAN)
+ return false;
+
pipe_config->has_pch_encoder = false;
bpp = 24;
if (intel_dp->compliance.test_data.bpc) {
@@ -366,6 +369,9 @@ intel_dp_mst_mode_valid(struct drm_connector *connector,
if (!intel_dp)
return MODE_ERROR;
+ if (mode->flags & DRM_MODE_FLAG_DBLSCAN)
+ return MODE_NO_DBLESCAN;
+
max_link_clock = intel_dp_max_link_rate(intel_dp);
max_lanes = intel_dp_max_lane_count(intel_dp);