From: Dave Airlie <airlied@xxxxxxxxxx>
radeon requires this to get the slots for later filling
out a table on every transition.
Signed-off-by: Dave Airlie <airlied@xxxxxxxxxx>
---
drivers/gpu/drm/drm_dp_mst_topology.c | 13 +++++++++++++
include/drm/drm_dp_mst_helper.h | 2 ++
2 files changed, 15 insertions(+)
diff --git a/drivers/gpu/drm/drm_dp_mst_topology.c b/drivers/gpu/drm/drm_dp_mst_topology.c
index 9a5b687..0d15e6e 100644
--- a/drivers/gpu/drm/drm_dp_mst_topology.c
+++ b/drivers/gpu/drm/drm_dp_mst_topology.c
@@ -2319,6 +2319,19 @@ out:
}
EXPORT_SYMBOL(drm_dp_mst_allocate_vcpi);
+int drm_dp_mst_get_vcpi_slots(struct drm_dp_mst_topology_mgr *mgr, struct drm_dp_mst_port *port)
+{
+ int slots = 0;
+ port = drm_dp_get_validated_port_ref(mgr, port);
+ if (!port)
+ return slots;
+
+ slots = port->vcpi.num_slots;
+ drm_dp_put_port(port);
+ return slots;
+}
+EXPORT_SYMBOL(drm_dp_mst_get_vcpi_slots);
+
/**
* drm_dp_mst_reset_vcpi_slots() - Reset number of slots to 0 for VCPI
* @mgr: manager for this port
diff --git a/include/drm/drm_dp_mst_helper.h b/include/drm/drm_dp_mst_helper.h
index 00c1da9..a250781 100644
--- a/include/drm/drm_dp_mst_helper.h
+++ b/include/drm/drm_dp_mst_helper.h
@@ -486,6 +486,8 @@ int drm_dp_calc_pbn_mode(int clock, int bpp);
bool drm_dp_mst_allocate_vcpi(struct drm_dp_mst_topology_mgr *mgr, struct drm_dp_mst_port *port, int pbn, int *slots);
+int drm_dp_mst_get_vcpi_slots(struct drm_dp_mst_topology_mgr *mgr, struct drm_dp_mst_port *port);
+
void drm_dp_mst_reset_vcpi_slots(struct drm_dp_mst_topology_mgr *mgr, struct drm_dp_mst_port *port);
--
2.1.0
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