Implement the ->atomic_release() callback to release the shared link
bandwidth that was originally acquired during compute_config()
Signed-off-by: Dhinakaran Pandiyan <dhinakaran.pandi...@intel.com>
---
drivers/gpu/drm/i915/intel_dp_mst.c | 28 ++++++++++++++++++++++++++++
1 file changed, 28 insertions(+)
diff --git a/drivers/gpu/drm/i915/intel_dp_mst.c
b/drivers/gpu/drm/i915/intel_dp_mst.c
index f51574f..2f57a56 100644
--- a/drivers/gpu/drm/i915/intel_dp_mst.c
+++ b/drivers/gpu/drm/i915/intel_dp_mst.c
@@ -78,6 +78,33 @@ static bool intel_dp_mst_compute_config(struct intel_encoder
*encoder,
}
+static void intel_dp_mst_atomic_release(struct drm_connector *connector,
+ struct drm_connector_state *conn_state)
+{
+ struct intel_dp_mst_encoder *intel_mst;
+ struct drm_dp_mst_topology_mgr *mgr;
+ struct drm_dp_mst_topology_state *topology_state;
+ struct drm_encoder *encoder;
+ struct intel_connector *intel_connector = to_intel_connector(connector);
+
+ encoder = connector->state->best_encoder;
+ if (!encoder || to_intel_encoder(encoder)->type != INTEL_OUTPUT_DP_MST)
+ return;
+
+ intel_mst = enc_to_mst(encoder);
+ mgr = &intel_mst->primary->dp.mst_mgr;
+
+ topology_state = drm_atomic_get_mst_topology_state(conn_state->state,
+ mgr);
+ if (IS_ERR(topology_state)) {
+ DRM_DEBUG_KMS("failed to create MST topology state %ld\n",
+ PTR_ERR(topology_state));
+ return;
+ }
+
+ drm_dp_atomic_release_vcpi_slots(topology_state, intel_connector->port);
+}
+
static void intel_mst_disable_dp(struct intel_encoder *encoder,
struct intel_crtc_state *old_crtc_state,
struct drm_connector_state *old_conn_state)
@@ -401,6 +428,7 @@ static const struct drm_connector_helper_funcs
intel_dp_mst_connector_helper_fun
.mode_valid = intel_dp_mst_mode_valid,
.atomic_best_encoder = intel_mst_atomic_best_encoder,
.best_encoder = intel_mst_best_encoder,
+ .atomic_release = intel_dp_mst_atomic_release,
};
static void intel_dp_mst_encoder_destroy(struct drm_encoder *encoder)
--
2.7.4
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