[Intel-gfx] [PATCH 15/17] drm/i915/dp_mst: Add atomic state for all streams on pre-tgl platforms

[Imre Deak <imre.deak@intel.com>]

If an MST stream is modeset, its state must be checked along all the
other streams on the same MST link, for instance to resolve a BW
overallocation of a non-sink MST port or to make sure that the FEC is
enabled/disabled the same way for all these streams.

To prepare for that this patch adds all the stream CRTCs to the atomic
state and marks them for modeset similarly to tgl+ platforms. (If the
state computation doesn't change the state the CRTC is switched back to
fastset mode.)

Signed-off-by: Imre Deak <imre.deak@intel.com>
---
 drivers/gpu/drm/i915/display/intel_dp_mst.c | 3 ---
 1 file changed, 3 deletions(-)

diff --git a/drivers/gpu/drm/i915/display/intel_dp_mst.c b/drivers/gpu/drm/i915/display/intel_dp_mst.c
index 4fe10d7256630..b53254473e0d9 100644
--- a/drivers/gpu/drm/i915/display/intel_dp_mst.c
+++ b/drivers/gpu/drm/i915/display/intel_dp_mst.c
@@ -499,9 +499,6 @@ intel_dp_mst_atomic_master_trans_check(struct intel_connector *connector,
 	struct intel_connector *connector_iter;
 	int ret = 0;
 
-	if (DISPLAY_VER(dev_priv) < 12)
-		return  0;
-
 	if (!intel_connector_needs_modeset(state, &connector->base))
 		return 0;
 
-- 
2.37.2