diff options
| author | Dave Airlie <airlied@redhat.com> | 2015-02-24 09:23:55 +1000 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2015-03-19 12:26:45 -0400 |
| commit | 87f5942d1f7bc320a0ec70ac4a8a3396024c7091 (patch) | |
| tree | 2ce292b4c6afea3ac0c48af3bcf734660f6ff42f /drivers | |
| parent | 875711f0e217b00cba1a851eee01c4e33041a91c (diff) | |
drm/dp_mst: add a function to retrieve vcpi slots
radeon requires this to get the slots for later filling
out a table on every transition.
Signed-off-by: Dave Airlie <airlied@redhat.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/gpu/drm/drm_dp_mst_topology.c | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/drivers/gpu/drm/drm_dp_mst_topology.c b/drivers/gpu/drm/drm_dp_mst_topology.c index 9a5b68717ec8..0d15e6e30732 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 |