return 0;
}
+static void tb_dp_dump(struct tb_tunnel *tunnel)
+{
+ struct tb_port *in, *out;
+ u32 dp_cap, rate, lanes;
+
+ in = tunnel->src_port;
+ out = tunnel->dst_port;
+
+ if (tb_port_read(in, &dp_cap, TB_CFG_PORT,
+ in->cap_adap + DP_LOCAL_CAP, 1))
+ return;
+
+ rate = tb_dp_cap_get_rate(dp_cap);
+ lanes = tb_dp_cap_get_lanes(dp_cap);
+
+ tb_port_dbg(in, "maximum supported bandwidth %u Mb/s x%u = %u Mb/s\n",
+ rate, lanes, tb_dp_bandwidth(rate, lanes));
+
+ out = tunnel->dst_port;
+
+ if (tb_port_read(out, &dp_cap, TB_CFG_PORT,
+ out->cap_adap + DP_LOCAL_CAP, 1))
+ return;
+
+ rate = tb_dp_cap_get_rate(dp_cap);
+ lanes = tb_dp_cap_get_lanes(dp_cap);
+
+ tb_port_dbg(out, "maximum supported bandwidth %u Mb/s x%u = %u Mb/s\n",
+ rate, lanes, tb_dp_bandwidth(rate, lanes));
+
+ if (tb_port_read(in, &dp_cap, TB_CFG_PORT,
+ in->cap_adap + DP_REMOTE_CAP, 1))
+ return;
+
+ rate = tb_dp_cap_get_rate(dp_cap);
+ lanes = tb_dp_cap_get_lanes(dp_cap);
+
+ tb_port_dbg(in, "reduced bandwidth %u Mb/s x%u = %u Mb/s\n",
+ rate, lanes, tb_dp_bandwidth(rate, lanes));
+}
+
/**
* tb_tunnel_discover_dp() - Discover existing Display Port tunnels
* @tb: Pointer to the domain structure
goto err_deactivate;
}
+ tb_dp_dump(tunnel);
+
tb_tunnel_dbg(tunnel, "discovered\n");
return tunnel;