[Intel-gfx] [PATCH 2/2] drm/i915: eDP DRRS limited to only one panel at a time

[Ramalingam C]

In case of multiple eDP panels, only one can have
the DRRS enabled on it.

In future eDP DRRS will be extended for multiple panels.

Signed-off-by: Ramalingam C <ramalingam.c at intel.com>
---
 drivers/gpu/drm/i915/intel_dp.c |    5 +++++
 1 file changed, 5 insertions(+)

diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c
index 0b26df9..ec40d19 100644
--- a/drivers/gpu/drm/i915/intel_dp.c
+++ b/drivers/gpu/drm/i915/intel_dp.c
@@ -5311,6 +5311,11 @@ intel_dp_drrs_init(struct intel_connector *intel_connector,
 		return NULL;
 	}
 
+	if (dev_priv->drrs.type == SEAMLESS_DRRS_SUPPORT) {
+		DRM_DEBUG_KMS("DRRS already enabled on previous connector\n");
+		return NULL;
+	}
+
 	INIT_DELAYED_WORK(&dev_priv->drrs.work, intel_edp_drrs_downclock_work);
 
 	mutex_init(&dev_priv->drrs.mutex);
-- 
1.7.9.5