521 	/* The first DP IN port is sink 0 and second is sink 1 */  in tb_lc_dp_sink_from_port()
530 static int tb_lc_dp_sink_available(struct tb_switch *sw, int sink)  in tb_lc_dp_sink_available()  argument
541 	 * Sink is available for CM/SW to use if the allocation valie is  in tb_lc_dp_sink_available()
544 	if (!sink) {  in tb_lc_dp_sink_available()
559  * tb_lc_dp_sink_query() - Is DP sink available for DP IN port
560  * @sw: Switch whose DP sink is queried
563  * Queries through LC SNK_ALLOCATION registers whether DP sink is available
568 	int sink;  in tb_lc_dp_sink_query()  local
571 	 * For older generations sink is always available as there is no  in tb_lc_dp_sink_query()
577 	sink = tb_lc_dp_sink_from_port(sw, in);  in tb_lc_dp_sink_query()
578 	if (sink < 0)  in tb_lc_dp_sink_query()
581 	return !tb_lc_dp_sink_available(sw, sink);  in tb_lc_dp_sink_query()
585  * tb_lc_dp_sink_alloc() - Allocate DP sink
586  * @sw: Switch whose DP sink is allocated
587  * @in: DP IN port the DP sink is allocated for
589  * Allocate DP sink for @in via LC SNK_ALLOCATION registers. If the
596 	int ret, sink;  in tb_lc_dp_sink_alloc()  local
602 	sink = tb_lc_dp_sink_from_port(sw, in);  in tb_lc_dp_sink_alloc()
603 	if (sink < 0)  in tb_lc_dp_sink_alloc()
604 		return sink;  in tb_lc_dp_sink_alloc()
606 	ret = tb_lc_dp_sink_available(sw, sink);  in tb_lc_dp_sink_alloc()
615 	if (!sink) {  in tb_lc_dp_sink_alloc()
630 	tb_port_dbg(in, "sink %d allocated\n", sink);  in tb_lc_dp_sink_alloc()
635  * tb_lc_dp_sink_dealloc() - De-allocate DP sink
636  * @sw: Switch whose DP sink is de-allocated
637  * @in: DP IN port whose DP sink is de-allocated
639  * De-allocate DP sink from @in using LC SNK_ALLOCATION registers.
643 	int ret, sink;  in tb_lc_dp_sink_dealloc()  local
649 	sink = tb_lc_dp_sink_from_port(sw, in);  in tb_lc_dp_sink_dealloc()
650 	if (sink < 0)  in tb_lc_dp_sink_dealloc()
651 		return sink;  in tb_lc_dp_sink_dealloc()
654 	ret = tb_lc_dp_sink_available(sw, sink);  in tb_lc_dp_sink_dealloc()
663 	if (!sink)  in tb_lc_dp_sink_dealloc()
673 	tb_port_dbg(in, "sink %d de-allocated\n", sink);  in tb_lc_dp_sink_dealloc()