1 // SPDX-License-Identifier: GPL-2.0
12  * tb_lc_read_uuid() - Read switch UUID from link controller common register
18 	if (!sw->cap_lc)  in tb_lc_read_uuid()
19 		return -EINVAL;  in tb_lc_read_uuid()
20 	return tb_sw_read(sw, uuid, TB_CFG_SWITCH, sw->cap_lc + TB_LC_FUSE, 4);  in tb_lc_read_uuid()
25 	if (!sw->cap_lc)  in read_lc_desc()
26 		return -EINVAL;  in read_lc_desc()
27 	return tb_sw_read(sw, desc, TB_CFG_SWITCH, sw->cap_lc + TB_LC_DESC, 1);  in read_lc_desc()
32 	struct tb_switch *sw = port->sw;  in find_port_lc_cap()
43 	phys = tb_phy_port_from_link(port->port);  in find_port_lc_cap()
45 	return sw->cap_lc + start + phys * size;  in find_port_lc_cap()
51 	struct tb_switch *sw = port->sw;  in tb_lc_set_port_configured()
52 	u32 ctrl, lane;  in tb_lc_set_port_configured()  local
55 	if (sw->generation < 2)  in tb_lc_set_port_configured()
66 	/* Resolve correct lane */  in tb_lc_set_port_configured()
67 	if (port->port % 2)  in tb_lc_set_port_configured()
68 		lane = TB_LC_SX_CTRL_L1C;  in tb_lc_set_port_configured()
70 		lane = TB_LC_SX_CTRL_L2C;  in tb_lc_set_port_configured()
73 		ctrl |= lane;  in tb_lc_set_port_configured()
77 		ctrl &= ~lane;  in tb_lc_set_port_configured()
86  * tb_lc_configure_port() - Let LC know about configured port
97  * tb_lc_unconfigure_port() - Let LC know about unconfigured port
109 	struct tb_switch *sw = port->sw;  in tb_lc_set_xdomain_configured()
110 	u32 ctrl, lane;  in tb_lc_set_xdomain_configured()  local
113 	if (sw->generation < 2)  in tb_lc_set_xdomain_configured()
124 	/* Resolve correct lane */  in tb_lc_set_xdomain_configured()
125 	if (port->port % 2)  in tb_lc_set_xdomain_configured()
126 		lane = TB_LC_SX_CTRL_L1D;  in tb_lc_set_xdomain_configured()
128 		lane = TB_LC_SX_CTRL_L2D;  in tb_lc_set_xdomain_configured()
131 		ctrl |= lane;  in tb_lc_set_xdomain_configured()
133 		ctrl &= ~lane;  in tb_lc_set_xdomain_configured()
139  * tb_lc_configure_xdomain() - Inform LC that the link is XDomain
142  * Sets the lane configured for XDomain accordingly so that the LC knows
151  * tb_lc_unconfigure_xdomain() - Unconfigure XDomain from port
154  * Unsets the lane XDomain configuration.
190  * tb_lc_set_wake() - Enable/disable wake
201 	if (sw->generation < 2)  in tb_lc_set_wake()
218 		unsigned int offset = sw->cap_lc + start + i * size;  in tb_lc_set_wake()
229  * tb_lc_set_sleep() - Inform LC that the switch is going to sleep
240 	if (sw->generation < 2)  in tb_lc_set_sleep()
254 		unsigned int offset = sw->cap_lc + start + i * size;  in tb_lc_set_sleep()
273  * tb_lc_lane_bonding_possible() - Is lane bonding possible towards switch
276  * Checks whether conditions for lane bonding from parent to @sw are
285 	if (sw->generation < 2)  in tb_lc_lane_bonding_possible()
311 	return -EINVAL;  in tb_lc_dp_sink_from_port()
320 			 sw->cap_lc + TB_LC_SNK_ALLOCATION, 1);  in tb_lc_dp_sink_available()
339 	return -EBUSY;  in tb_lc_dp_sink_available()
343  * tb_lc_dp_sink_query() - Is DP sink available for DP IN port
358 	if (sw->generation < 3)  in tb_lc_dp_sink_query()
369  * tb_lc_dp_sink_alloc() - Allocate DP sink
375  * other cases returs negative errno. In particular %-EBUSY is returned if
383 	if (sw->generation < 3)  in tb_lc_dp_sink_alloc()
395 			 sw->cap_lc + TB_LC_SNK_ALLOCATION, 1);  in tb_lc_dp_sink_alloc()
409 			  sw->cap_lc + TB_LC_SNK_ALLOCATION, 1);  in tb_lc_dp_sink_alloc()
419  * tb_lc_dp_sink_dealloc() - De-allocate DP sink
420  * @sw: Switch whose DP sink is de-allocated
421  * @in: DP IN port whose DP sink is de-allocated
423  * De-allocate DP sink from @in using LC SNK_ALLOCATION registers.
430 	if (sw->generation < 3)  in tb_lc_dp_sink_dealloc()
443 			 sw->cap_lc + TB_LC_SNK_ALLOCATION, 1);  in tb_lc_dp_sink_dealloc()
453 			  sw->cap_lc + TB_LC_SNK_ALLOCATION, 1);  in tb_lc_dp_sink_dealloc()
457 	tb_port_dbg(in, "sink %d de-allocated\n", sink);  in tb_lc_dp_sink_dealloc()
462  * tb_lc_force_power() - Forces LC to be powered on