drm/dp/mst: add some defines for logical/physical ports
This just removes the magic number.
Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Dave Airlie <airlied@redhat.com>
diff --git a/drivers/gpu/drm/drm_dp_mst_topology.c b/drivers/gpu/drm/drm_dp_mst_topology.c
index 3084b3a7..bf27a07 100644
--- a/drivers/gpu/drm/drm_dp_mst_topology.c
+++ b/drivers/gpu/drm/drm_dp_mst_topology.c
@@ -1125,7 +1125,7 @@
drm_dp_put_port(port);
goto out;
}
- if (port->port_num >= 8) {
+ if (port->port_num >= DP_MST_LOGICAL_PORT_0) {
port->cached_edid = drm_get_edid(port->connector, &port->aux.ddc);
drm_mode_connector_set_tile_property(port->connector);
}
diff --git a/include/drm/drm_dp_helper.h b/include/drm/drm_dp_helper.h
index 499e9f6..0212d13 100644
--- a/include/drm/drm_dp_helper.h
+++ b/include/drm/drm_dp_helper.h
@@ -568,6 +568,10 @@
#define MODE_I2C_READ 4
#define MODE_I2C_STOP 8
+/* DP 1.2 MST PORTs - Section 2.5.1 v1.2a spec */
+#define DP_MST_PHYSICAL_PORT_0 0
+#define DP_MST_LOGICAL_PORT_0 8
+
#define DP_LINK_STATUS_SIZE 6
bool drm_dp_channel_eq_ok(const u8 link_status[DP_LINK_STATUS_SIZE],
int lane_count);