drivers/thunderbolt/lc.c

15  * @sw: Switch whose UUID is read
18 int tb_lc_read_uuid(struct tb_switch *sw, u32 *uuid)
20 	if (!sw->cap_lc)
22 	return tb_sw_read(sw, uuid, TB_CFG_SWITCH, sw->cap_lc + TB_LC_FUSE, 4);
25 static int read_lc_desc(struct tb_switch *sw, u32 *desc)
27 	if (!sw->cap_lc)
29 	return tb_sw_read(sw, desc, TB_CFG_SWITCH, sw->cap_lc + TB_LC_DESC, 1);
34 	struct tb_switch *sw = port->sw;
38 	ret = read_lc_desc(sw, &desc);
47 	return sw->cap_lc + start + phys * size;
61 	struct tb_switch *sw = port->sw;
65 	if (sw->generation < 2)
72 	ret = tb_sw_read(sw, &mode, TB_CFG_SWITCH, cap + TB_LC_PORT_MODE, 1);
78 	ret = tb_sw_write(sw, &mode, TB_CFG_SWITCH, cap + TB_LC_PORT_MODE, 1);
84 	ret = tb_sw_read(sw, &mode, TB_CFG_SWITCH, cap + TB_LC_PORT_MODE, 1);
90 	return tb_sw_write(sw, &mode, TB_CFG_SWITCH, cap + TB_LC_PORT_MODE, 1);
96 	struct tb_switch *sw = port->sw;
100 	if (sw->generation < 2)
107 	ret = tb_sw_read(sw, &ctrl, TB_CFG_SWITCH, cap + TB_LC_SX_CTRL, 1);
127 	return tb_sw_write(sw, &ctrl, TB_CFG_SWITCH, cap + TB_LC_SX_CTRL, 1);
154 	struct tb_switch *sw = port->sw;
158 	if (sw->generation < 2)
165 	ret = tb_sw_read(sw, &ctrl, TB_CFG_SWITCH, cap + TB_LC_SX_CTRL, 1);
180 	return tb_sw_write(sw, &ctrl, TB_CFG_SWITCH, cap + TB_LC_SX_CTRL, 1);
218 	struct tb_switch *sw = port->sw;
222 	if (!tb_route(sw))
225 	if (sw->generation < 2)
232 	ret = tb_sw_read(sw, &ctrl, TB_CFG_SWITCH, cap + TB_LC_SX_CTRL, 1);
238 	return tb_sw_write(sw, &ctrl, TB_CFG_SWITCH, cap + TB_LC_SX_CTRL, 1);
250 	struct tb_switch *sw = port->sw;
258 	ret = tb_sw_read(sw, &val, TB_CFG_SWITCH, cap + TB_LC_LINK_ATTR, 1);
273 	struct tb_switch *sw = port->sw;
277 	if (sw->generation != 3)
284 	ret = tb_sw_read(sw, &val, TB_CFG_SWITCH, cap + TB_LC_CS_42, 1);
299 	struct tb_switch *sw = port->sw;
303 	if (sw->generation != 3)
310 	ret = tb_sw_read(sw, &val, TB_CFG_SWITCH, cap + TB_LC_LINK_REQ, 1);
319 	struct tb_switch *sw = port->sw;
323 	if (sw->generation != 3)
330 	ret = tb_sw_read(sw, &val, TB_CFG_SWITCH, cap + TB_LC_LINK_REQ, 1);
339 	return tb_sw_write(sw, &val, TB_CFG_SWITCH, cap + TB_LC_LINK_REQ, 1);
375 static int tb_lc_set_wake_one(struct tb_switch *sw, unsigned int offset,
385 	ret = tb_sw_read(sw, &ctrl, TB_CFG_SWITCH,
402 	return tb_sw_write(sw, &ctrl, TB_CFG_SWITCH, offset + TB_LC_SX_CTRL, 1);
407  * @sw: Switch whose wakes to configure
412 int tb_lc_set_wake(struct tb_switch *sw, unsigned int flags)
417 	if (sw->generation < 2)
420 	if (!tb_route(sw))
423 	ret = read_lc_desc(sw, &desc);
434 		unsigned int offset = sw->cap_lc + start + i * size;
436 		ret = tb_lc_set_wake_one(sw, offset, flags);
446  * @sw: Switch to set sleep
451 int tb_lc_set_sleep(struct tb_switch *sw)
456 	if (sw->generation < 2)
459 	ret = read_lc_desc(sw, &desc);
470 		unsigned int offset = sw->cap_lc + start + i * size;
473 		ret = tb_sw_read(sw, &ctrl, TB_CFG_SWITCH,
479 		ret = tb_sw_write(sw, &ctrl, TB_CFG_SWITCH,
490  * @sw: Switch to check
492  * Checks whether conditions for lane bonding from parent to @sw are
495 bool tb_lc_lane_bonding_possible(struct tb_switch *sw)
501 	if (sw->generation < 2)
504 	up = tb_upstream_port(sw);
509 	ret = tb_sw_read(sw, &val, TB_CFG_SWITCH, cap + TB_LC_PORT_ATTR, 1);
516 static int tb_lc_dp_sink_from_port(const struct tb_switch *sw,
522 	tb_switch_for_each_port(sw, port) {
530 static int tb_lc_dp_sink_available(struct tb_switch *sw, int sink)
535 	ret = tb_sw_read(sw, &val, TB_CFG_SWITCH,
536 			 sw->cap_lc + TB_LC_SNK_ALLOCATION, 1);
560  * @sw: Switch whose DP sink is queried
566 bool tb_lc_dp_sink_query(struct tb_switch *sw, struct tb_port *in)
574 	if (sw->generation < 3)
577 	sink = tb_lc_dp_sink_from_port(sw, in);
581 	return !tb_lc_dp_sink_available(sw, sink);
586  * @sw: Switch whose DP sink is allocated
594 int tb_lc_dp_sink_alloc(struct tb_switch *sw, struct tb_port *in)
599 	if (sw->generation < 3)
602 	sink = tb_lc_dp_sink_from_port(sw, in);
606 	ret = tb_lc_dp_sink_available(sw, sink);
610 	ret = tb_sw_read(sw, &val, TB_CFG_SWITCH,
611 			 sw->cap_lc + TB_LC_SNK_ALLOCATION, 1);
624 	ret = tb_sw_write(sw, &val, TB_CFG_SWITCH,
625 			  sw->cap_lc + TB_LC_SNK_ALLOCATION, 1);
636  * @sw: Switch whose DP sink is de-allocated
641 int tb_lc_dp_sink_dealloc(struct tb_switch *sw, struct tb_port *in)
646 	if (sw->generation < 3)
649 	sink = tb_lc_dp_sink_from_port(sw, in);
654 	ret = tb_lc_dp_sink_available(sw, sink);
658 	ret = tb_sw_read(sw, &val, TB_CFG_SWITCH,
659 			 sw->cap_lc + TB_LC_SNK_ALLOCATION, 1);
668 	ret = tb_sw_write(sw, &val, TB_CFG_SWITCH,
669 			  sw->cap_lc + TB_LC_SNK_ALLOCATION, 1);
679  * @sw: Thunderbolt switch
684 int tb_lc_force_power(struct tb_switch *sw)
688 	return tb_sw_write(sw, &in, TB_CFG_SWITCH, TB_LC_POWER, 1);