Lines Matching refs:port
279 * @min_volt: Actual min voltage at the local port
280 * @req_min_volt: Requested min voltage to the port partner
281 * @max_volt: Actual max voltage at the local port
282 * @req_max_volt: Requested max voltage to the port partner
283 * @max_curr: Actual max current at the local port
284 * @req_max_curr: Requested max current of the port partner
285 * @req_out_volt: Requested output voltage to the port partner
286 * @req_op_curr: Requested operating current to the port partner
449 /* Requested current / voltage to the port partner */
452 /* Actual current / voltage limit of the local port */
488 /* port belongs to a self powered device */
507 * When set, port requests PD_P_SNK_STDBY_MW upon entering SNK_DISCOVERY and
535 * Prior to discovering the port partner's Specification Revision, the
538 * When the port partner's Specification Revision is discovered, the following
541 * between the port and partner (2), the port and partner will communicate
542 * on revision (2), but the port and cable will communicate on revision (1).
544 * between the port and partner (2), the port and partner will communicate
545 * on revision (2), and the port and cable will communicate on revision (2)
565 struct tcpm_port *port;
581 #define tcpm_port_is_sink(port) \
582 (tcpm_cc_is_sink((port)->cc1) || tcpm_cc_is_sink((port)->cc2))
588 #define tcpm_port_is_source(port) \
589 ((tcpm_cc_is_source((port)->cc1) && \
590 !tcpm_cc_is_source((port)->cc2)) || \
591 (tcpm_cc_is_source((port)->cc2) && \
592 !tcpm_cc_is_source((port)->cc1)))
594 #define tcpm_port_is_debug(port) \
595 (tcpm_cc_is_source((port)->cc1) && tcpm_cc_is_source((port)->cc2))
597 #define tcpm_port_is_audio(port) \
598 (tcpm_cc_is_audio((port)->cc1) && tcpm_cc_is_audio((port)->cc2))
600 #define tcpm_port_is_audio_detached(port) \
601 ((tcpm_cc_is_audio((port)->cc1) && tcpm_cc_is_open((port)->cc2)) || \
602 (tcpm_cc_is_audio((port)->cc2) && tcpm_cc_is_open((port)->cc1)))
604 #define tcpm_try_snk(port) \
605 ((port)->try_snk_count == 0 && (port)->try_role == TYPEC_SINK && \
606 (port)->port_type == TYPEC_PORT_DRP)
608 #define tcpm_try_src(port) \
609 ((port)->try_src_count == 0 && (port)->try_role == TYPEC_SOURCE && \
610 (port)->port_type == TYPEC_PORT_DRP)
612 #define tcpm_data_role_for_source(port) \
613 ((port)->typec_caps.data == TYPEC_PORT_UFP ? \
616 #define tcpm_data_role_for_sink(port) \
617 ((port)->typec_caps.data == TYPEC_PORT_DFP ? \
620 #define tcpm_sink_tx_ok(port) \
621 (tcpm_port_is_sink(port) && \
622 ((port)->cc1 == TYPEC_CC_RP_3_0 || (port)->cc2 == TYPEC_CC_RP_3_0))
624 #define tcpm_wait_for_discharge(port) \
625 (((port)->auto_vbus_discharge_enabled && !(port)->vbus_vsafe0v) ? PD_T_SAFE_0V : 0)
627 static enum tcpm_state tcpm_default_state(struct tcpm_port *port)
629 if (port->port_type == TYPEC_PORT_DRP) {
630 if (port->try_role == TYPEC_SINK)
632 else if (port->try_role == TYPEC_SOURCE)
635 } else if (port->port_type == TYPEC_PORT_SNK) {
641 static bool tcpm_port_is_disconnected(struct tcpm_port *port)
643 return (!port->attached && port->cc1 == TYPEC_CC_OPEN &&
644 port->cc2 == TYPEC_CC_OPEN) ||
645 (port->attached && ((port->polarity == TYPEC_POLARITY_CC1 &&
646 port->cc1 == TYPEC_CC_OPEN) ||
647 (port->polarity == TYPEC_POLARITY_CC2 &&
648 port->cc2 == TYPEC_CC_OPEN)));
657 static bool tcpm_log_full(struct tcpm_port *port)
659 return port->logbuffer_tail ==
660 (port->logbuffer_head + 1) % LOG_BUFFER_ENTRIES;
664 static void _tcpm_log(struct tcpm_port *port, const char *fmt, va_list args)
670 mutex_lock(&port->logbuffer_lock);
671 if (!port->logbuffer[port->logbuffer_head]) {
672 port->logbuffer[port->logbuffer_head] =
674 if (!port->logbuffer[port->logbuffer_head]) {
675 mutex_unlock(&port->logbuffer_lock);
682 if (tcpm_log_full(port)) {
683 port->logbuffer_head = max(port->logbuffer_head - 1, 0);
687 if (port->logbuffer_head < 0 ||
688 port->logbuffer_head >= LOG_BUFFER_ENTRIES) {
689 dev_warn(port->dev,
690 "Bad log buffer index %d\n", port->logbuffer_head);
694 if (!port->logbuffer[port->logbuffer_head]) {
695 dev_warn(port->dev,
696 "Log buffer index %d is NULL\n", port->logbuffer_head);
701 scnprintf(port->logbuffer[port->logbuffer_head],
705 port->logbuffer_head = (port->logbuffer_head + 1) % LOG_BUFFER_ENTRIES;
708 mutex_unlock(&port->logbuffer_lock);
712 static void tcpm_log(struct tcpm_port *port, const char *fmt, ...)
717 if (tcpm_port_is_disconnected(port) &&
718 (port->state == SRC_UNATTACHED || port->state == SNK_UNATTACHED ||
719 port->state == TOGGLING || port->state == CHECK_CONTAMINANT))
723 _tcpm_log(port, fmt, args);
728 static void tcpm_log_force(struct tcpm_port *port, const char *fmt, ...)
733 _tcpm_log(port, fmt, args);
737 static void tcpm_log_source_caps(struct tcpm_port *port)
741 for (i = 0; i < port->nr_source_caps; i++) {
742 u32 pdo = port->source_caps[i];
793 tcpm_log(port, " PDO %d: type %d, %s",
800 struct tcpm_port *port = s->private;
803 mutex_lock(&port->logbuffer_lock);
804 tail = port->logbuffer_tail;
805 while (tail != port->logbuffer_head) {
806 seq_printf(s, "%s\n", port->logbuffer[tail]);
810 port->logbuffer_tail = tail;
811 mutex_unlock(&port->logbuffer_lock);
817 static void tcpm_debugfs_init(struct tcpm_port *port)
821 mutex_init(&port->logbuffer_lock);
822 snprintf(name, NAME_MAX, "tcpm-%s", dev_name(port->dev));
823 port->dentry = debugfs_create_dir(name, usb_debug_root);
824 debugfs_create_file("log", S_IFREG | 0444, port->dentry, port,
828 static void tcpm_debugfs_exit(struct tcpm_port *port)
832 mutex_lock(&port->logbuffer_lock);
834 kfree(port->logbuffer[i]);
835 port->logbuffer[i] = NULL;
837 mutex_unlock(&port->logbuffer_lock);
839 debugfs_remove(port->dentry);
845 static void tcpm_log(const struct tcpm_port *port, const char *fmt, ...) { }
847 static void tcpm_log_force(struct tcpm_port *port, const char *fmt, ...) { }
848 static void tcpm_log_source_caps(struct tcpm_port *port) { }
849 static void tcpm_debugfs_init(const struct tcpm_port *port) { }
850 static void tcpm_debugfs_exit(const struct tcpm_port *port) { }
854 static void tcpm_set_cc(struct tcpm_port *port, enum typec_cc_status cc)
856 tcpm_log(port, "cc:=%d", cc);
857 port->cc_req = cc;
858 port->tcpc->set_cc(port->tcpc, cc);
861 static int tcpm_enable_auto_vbus_discharge(struct tcpm_port *port, bool enable)
865 if (port->tcpc->enable_auto_vbus_discharge) {
866 ret = port->tcpc->enable_auto_vbus_discharge(port->tcpc, enable);
867 tcpm_log_force(port, "%s vbus discharge ret:%d", enable ? "enable" : "disable",
870 port->auto_vbus_discharge_enabled = enable;
876 static void tcpm_apply_rc(struct tcpm_port *port)
882 if (port->tcpc->enable_auto_vbus_discharge && port->tcpc->apply_rc) {
883 tcpm_log(port, "Apply_RC");
884 port->tcpc->apply_rc(port->tcpc, port->cc_req, port->polarity);
885 tcpm_enable_auto_vbus_discharge(port, false);
891 * by a port if configured as source.
894 static enum typec_cc_status tcpm_rp_cc(struct tcpm_port *port)
896 const u32 *src_pdo = port->src_pdo;
897 int nr_pdo = port->nr_src_pdo;
900 if (!port->pd_supported)
901 return port->src_rp;
925 static void tcpm_ams_finish(struct tcpm_port *port)
927 tcpm_log(port, "AMS %s finished", tcpm_ams_str[port->ams]);
929 if (port->pd_capable && port->pwr_role == TYPEC_SOURCE) {
930 if (port->negotiated_rev >= PD_REV30)
931 tcpm_set_cc(port, SINK_TX_OK);
933 tcpm_set_cc(port, SINK_TX_NG);
934 } else if (port->pwr_role == TYPEC_SOURCE) {
935 tcpm_set_cc(port, tcpm_rp_cc(port));
938 port->in_ams = false;
939 port->ams = NONE_AMS;
942 static int tcpm_pd_transmit(struct tcpm_port *port,
952 negotiated_rev = port->negotiated_rev_prime;
956 negotiated_rev = port->negotiated_rev;
961 tcpm_log(port, "PD TX, header: %#x", le16_to_cpu(msg->header));
963 tcpm_log(port, "PD TX, type: %#x", tx_sop_type);
965 reinit_completion(&port->tx_complete);
966 ret = port->tcpc->pd_transmit(port->tcpc, tx_sop_type, msg, negotiated_rev);
970 mutex_unlock(&port->lock);
971 timeout = wait_for_completion_timeout(&port->tx_complete,
973 mutex_lock(&port->lock);
977 switch (port->tx_status) {
981 port->message_id_prime = (port->message_id_prime + 1) &
986 port->message_id = (port->message_id + 1) &
997 if (port->ams != NONE_AMS)
998 port->in_ams = true;
1010 if (port->ams == ATTENTION || port->ams == SOURCE_ALERT)
1011 tcpm_ams_finish(port);
1016 void tcpm_pd_transmit_complete(struct tcpm_port *port,
1019 tcpm_log(port, "PD TX complete, status: %u", status);
1020 port->tx_status = status;
1021 complete(&port->tx_complete);
1025 static int tcpm_mux_set(struct tcpm_port *port, int state,
1031 tcpm_log(port, "Requesting mux state %d, usb-role %d, orientation %d",
1034 ret = typec_set_orientation(port->typec_port, orientation);
1038 if (port->role_sw) {
1039 ret = usb_role_switch_set_role(port->role_sw, usb_role);
1044 return typec_set_mode(port->typec_port, state);
1047 static int tcpm_set_polarity(struct tcpm_port *port,
1052 tcpm_log(port, "polarity %d", polarity);
1054 ret = port->tcpc->set_polarity(port->tcpc, polarity);
1058 port->polarity = polarity;
1063 static int tcpm_set_vconn(struct tcpm_port *port, bool enable)
1067 tcpm_log(port, "vconn:=%d", enable);
1069 ret = port->tcpc->set_vconn(port->tcpc, enable);
1071 port->vconn_role = enable ? TYPEC_SOURCE : TYPEC_SINK;
1072 typec_set_vconn_role(port->typec_port, port->vconn_role);
1078 static u32 tcpm_get_current_limit(struct tcpm_port *port)
1083 cc = port->polarity ? port->cc2 : port->cc1;
1093 if (port->tcpc->get_current_limit)
1094 limit = port->tcpc->get_current_limit(port->tcpc);
1103 static int tcpm_set_current_limit(struct tcpm_port *port, u32 max_ma, u32 mv)
1107 tcpm_log(port, "Setting voltage/current limit %u mV %u mA", mv, max_ma);
1109 port->supply_voltage = mv;
1110 port->current_limit = max_ma;
1111 power_supply_changed(port->psy);
1113 if (port->tcpc->set_current_limit)
1114 ret = port->tcpc->set_current_limit(port->tcpc, max_ma, mv);
1119 static int tcpm_set_attached_state(struct tcpm_port *port, bool attached)
1121 return port->tcpc->set_roles(port->tcpc, attached, port->pwr_role,
1122 port->data_role);
1125 static int tcpm_set_roles(struct tcpm_port *port, bool attached,
1132 if (port->polarity == TYPEC_POLARITY_CC1)
1137 if (port->typec_caps.data == TYPEC_PORT_DRD) {
1142 } else if (port->typec_caps.data == TYPEC_PORT_DFP) {
1162 ret = tcpm_mux_set(port, TYPEC_STATE_USB, usb_role, orientation);
1166 ret = port->tcpc->set_roles(port->tcpc, attached, role, data);
1170 if (port->tcpc->set_orientation) {
1171 ret = port->tcpc->set_orientation(port->tcpc, orientation);
1176 port->pwr_role = role;
1177 port->data_role = data;
1178 typec_set_data_role(port->typec_port, data);
1179 typec_set_pwr_role(port->typec_port, role);
1184 static int tcpm_set_pwr_role(struct tcpm_port *port, enum typec_role role)
1188 ret = port->tcpc->set_roles(port->tcpc, true, role,
1189 port->data_role);
1193 port->pwr_role = role;
1194 typec_set_pwr_role(port->typec_port, role);
1204 static u32 tcpm_forge_legacy_pdo(struct tcpm_port *port, u32 pdo, enum typec_role role)
1221 static int tcpm_pd_send_source_caps(struct tcpm_port *port)
1229 for (i = 0; i < port->nr_src_pdo; i++) {
1230 if (port->negotiated_rev >= PD_REV30) {
1231 msg.payload[nr_pdo++] = cpu_to_le32(port->src_pdo[i]);
1233 pdo = tcpm_forge_legacy_pdo(port, port->src_pdo[i], TYPEC_SOURCE);
1242 port->pwr_role,
1243 port->data_role,
1244 port->negotiated_rev,
1245 port->message_id, 0);
1248 port->pwr_role,
1249 port->data_role,
1250 port->negotiated_rev,
1251 port->message_id,
1255 return tcpm_pd_transmit(port, TCPC_TX_SOP, &msg);
1258 static int tcpm_pd_send_sink_caps(struct tcpm_port *port)
1266 for (i = 0; i < port->nr_snk_pdo; i++) {
1267 if (port->negotiated_rev >= PD_REV30) {
1268 msg.payload[nr_pdo++] = cpu_to_le32(port->snk_pdo[i]);
1270 pdo = tcpm_forge_legacy_pdo(port, port->snk_pdo[i], TYPEC_SINK);
1279 port->pwr_role,
1280 port->data_role,
1281 port->negotiated_rev,
1282 port->message_id, 0);
1285 port->pwr_role,
1286 port->data_role,
1287 port->negotiated_rev,
1288 port->message_id,
1292 return tcpm_pd_transmit(port, TCPC_TX_SOP, &msg);
1295 static void mod_tcpm_delayed_work(struct tcpm_port *port, unsigned int delay_ms)
1298 hrtimer_start(&port->state_machine_timer, ms_to_ktime(delay_ms), HRTIMER_MODE_REL);
1300 hrtimer_cancel(&port->state_machine_timer);
1301 kthread_queue_work(port->wq, &port->state_machine);
1305 static void mod_vdm_delayed_work(struct tcpm_port *port, unsigned int delay_ms)
1308 hrtimer_start(&port->vdm_state_machine_timer, ms_to_ktime(delay_ms),
1311 hrtimer_cancel(&port->vdm_state_machine_timer);
1312 kthread_queue_work(port->wq, &port->vdm_state_machine);
1316 static void mod_enable_frs_delayed_work(struct tcpm_port *port, unsigned int delay_ms)
1319 hrtimer_start(&port->enable_frs_timer, ms_to_ktime(delay_ms), HRTIMER_MODE_REL);
1321 hrtimer_cancel(&port->enable_frs_timer);
1322 kthread_queue_work(port->wq, &port->enable_frs);
1326 static void mod_send_discover_delayed_work(struct tcpm_port *port, unsigned int delay_ms)
1329 hrtimer_start(&port->send_discover_timer, ms_to_ktime(delay_ms), HRTIMER_MODE_REL);
1331 hrtimer_cancel(&port->send_discover_timer);
1332 kthread_queue_work(port->wq, &port->send_discover_work);
1336 static void tcpm_set_state(struct tcpm_port *port, enum tcpm_state state,
1340 tcpm_log(port, "pending state change %s -> %s @ %u ms [%s %s]",
1341 tcpm_states[port->state], tcpm_states[state], delay_ms,
1342 pd_rev[port->negotiated_rev], tcpm_ams_str[port->ams]);
1343 port->delayed_state = state;
1344 mod_tcpm_delayed_work(port, delay_ms);
1345 port->delayed_runtime = ktime_add(ktime_get(), ms_to_ktime(delay_ms));
1346 port->delay_ms = delay_ms;
1348 tcpm_log(port, "state change %s -> %s [%s %s]",
1349 tcpm_states[port->state], tcpm_states[state],
1350 pd_rev[port->negotiated_rev], tcpm_ams_str[port->ams]);
1351 port->delayed_state = INVALID_STATE;
1352 port->prev_state = port->state;
1353 port->state = state;
1360 if (!port->state_machine_running)
1361 mod_tcpm_delayed_work(port, 0);
1365 static void tcpm_set_state_cond(struct tcpm_port *port, enum tcpm_state state,
1368 if (port->enter_state == port->state)
1369 tcpm_set_state(port, state, delay_ms);
1371 tcpm_log(port,
1374 tcpm_states[port->state], tcpm_states[state],
1375 delay_ms, tcpm_states[port->enter_state],
1376 pd_rev[port->negotiated_rev], tcpm_ams_str[port->ams]);
1379 static void tcpm_queue_message(struct tcpm_port *port,
1382 port->queued_message = message;
1383 mod_tcpm_delayed_work(port, 0);
1386 static bool tcpm_vdm_ams(struct tcpm_port *port)
1388 switch (port->ams) {
1408 static bool tcpm_ams_interruptible(struct tcpm_port *port)
1410 switch (port->ams) {
1430 if (port->in_ams)
1438 static int tcpm_ams_start(struct tcpm_port *port, enum tcpm_ams ams)
1442 tcpm_log(port, "AMS %s start", tcpm_ams_str[ams]);
1444 if (!tcpm_ams_interruptible(port) &&
1446 port->upcoming_state = INVALID_STATE;
1447 tcpm_log(port, "AMS %s not interruptible, aborting",
1448 tcpm_ams_str[port->ams]);
1452 if (port->pwr_role == TYPEC_SOURCE) {
1453 enum typec_cc_status cc_req = port->cc_req;
1455 port->ams = ams;
1458 tcpm_set_cc(port, tcpm_rp_cc(port));
1459 tcpm_pd_transmit(port, TCPC_TX_HARD_RESET, NULL);
1460 tcpm_set_state(port, HARD_RESET_START, 0);
1463 if (!port->explicit_contract)
1464 tcpm_set_cc(port, tcpm_rp_cc(port));
1465 tcpm_set_state(port, SOFT_RESET_SEND, 0);
1467 } else if (tcpm_vdm_ams(port)) {
1469 if (port->negotiated_rev >= PD_REV30)
1470 tcpm_set_cc(port, SINK_TX_NG);
1474 if (port->negotiated_rev >= PD_REV30)
1475 tcpm_set_cc(port, SINK_TX_NG);
1477 switch (port->state) {
1483 if (port->negotiated_rev >= PD_REV30)
1484 tcpm_set_state(port, AMS_START,
1488 tcpm_set_state(port, AMS_START, 0);
1491 if (port->negotiated_rev >= PD_REV30)
1492 tcpm_set_state(port, SRC_READY,
1496 tcpm_set_state(port, SRC_READY, 0);
1500 if (port->negotiated_rev >= PD_REV30 &&
1501 !tcpm_sink_tx_ok(port) &&
1504 port->upcoming_state = INVALID_STATE;
1505 tcpm_log(port, "Sink TX No Go");
1509 port->ams = ams;
1512 tcpm_pd_transmit(port, TCPC_TX_HARD_RESET, NULL);
1513 tcpm_set_state(port, HARD_RESET_START, 0);
1515 } else if (tcpm_vdm_ams(port)) {
1519 if (port->state == SNK_READY ||
1520 port->state == SNK_SOFT_RESET)
1521 tcpm_set_state(port, AMS_START, 0);
1523 tcpm_set_state(port, SNK_READY, 0);
1532 static void tcpm_queue_vdm(struct tcpm_port *port, const u32 header,
1535 u32 vdo_hdr = port->vdo_data[0];
1537 WARN_ON(!mutex_is_locked(&port->lock));
1542 port->send_discover_prime = true;
1544 port->send_discover = true;
1545 mod_send_discover_delayed_work(port, SEND_DISCOVER_RETRY_MS);
1548 WARN_ON(port->vdm_state > VDM_STATE_DONE);
1551 port->vdo_count = cnt + 1;
1552 port->vdo_data[0] = header;
1553 memcpy(&port->vdo_data[1], data, sizeof(u32) * cnt);
1555 port->vdm_retries = 0;
1556 port->vdm_state = VDM_STATE_READY;
1557 port->vdm_sm_running = true;
1559 port->tx_sop_type = tx_sop_type;
1561 mod_vdm_delayed_work(port, 0);
1564 static void tcpm_queue_vdm_unlocked(struct tcpm_port *port, const u32 header,
1567 mutex_lock(&port->lock);
1568 tcpm_queue_vdm(port, header, data, cnt, TCPC_TX_SOP);
1569 mutex_unlock(&port->lock);
1572 static void svdm_consume_identity(struct tcpm_port *port, const u32 *p, int cnt)
1577 memset(&port->mode_data, 0, sizeof(port->mode_data));
1579 port->partner_ident.id_header = vdo;
1580 port->partner_ident.cert_stat = p[VDO_INDEX_CSTAT];
1581 port->partner_ident.product = product;
1583 typec_partner_set_identity(port->partner);
1585 tcpm_log(port, "Identity: %04x:%04x.%04x",
1590 static void svdm_consume_identity_sop_prime(struct tcpm_port *port, const u32 *p, int cnt)
1599 if (!IS_ERR_OR_NULL(port->cable))
1603 memset(&port->cable_ident, 0, sizeof(port->cable_ident));
1606 port->cable_ident.id_header = idh;
1607 port->cable_ident.cert_stat = p[VDO_INDEX_CSTAT];
1608 port->cable_ident.product = product;
1609 port->cable_ident.vdo[0] = p[VDO_INDEX_CABLE_1];
1612 port->cable_desc.type = (enum typec_plug_type) (VDO_TYPEC_CABLE_TYPE(p[VDO_INDEX_CABLE_1]) +
1614 port->cable_desc.active = PD_IDH_PTYPE(idh) == IDH_PTYPE_ACABLE ? 1 : 0;
1616 switch (port->negotiated_rev_prime) {
1618 port->cable_desc.pd_revision = 0x0300;
1619 if (port->cable_desc.active)
1620 port->cable_ident.vdo[1] = p[VDO_INDEX_CABLE_2];
1623 port->cable_desc.pd_revision = 0x0200;
1626 port->cable_desc.pd_revision = 0x0200;
1629 port->cable_desc.identity = &port->cable_ident;
1631 port->cable = typec_register_cable(port->typec_port, &port->cable_desc);
1632 if (IS_ERR_OR_NULL(port->cable))
1634 typec_cable_set_identity(port->cable);
1637 typec_cable_set_svdm_version(port->cable, svdm_version);
1640 if (IS_ERR_OR_NULL(port->plug_prime)) {
1641 port->plug_prime_desc.index = TYPEC_PLUG_SOP_P;
1642 port->plug_prime = typec_register_plug(port->cable,
1643 &port->plug_prime_desc);
1647 static bool svdm_consume_svids(struct tcpm_port *port, const u32 *p, int cnt,
1651 &port->mode_data_prime : &port->mode_data;
1665 tcpm_log(port, "SVID %d: 0x%x", pmdata->nsvids, svid);
1675 tcpm_log(port, "SVID %d: 0x%x", pmdata->nsvids, svid);
1693 tcpm_log(port, "SVID_DISCOVERY_MAX(%d) too low!", SVID_DISCOVERY_MAX);
1697 static void svdm_consume_modes(struct tcpm_port *port, const u32 *p, int cnt,
1700 struct pd_mode_data *pmdata = &port->mode_data;
1706 pmdata = &port->mode_data_prime;
1707 if (pmdata->altmodes >= ARRAY_SIZE(port->plug_prime_altmode)) {
1713 pmdata = &port->mode_data;
1714 if (pmdata->altmodes >= ARRAY_SIZE(port->partner_altmode)) {
1731 tcpm_log(port, " Alternate mode %d: SVID 0x%04x, VDO %d: 0x%08x",
1739 static void tcpm_register_partner_altmodes(struct tcpm_port *port)
1741 struct pd_mode_data *modep = &port->mode_data;
1746 altmode = typec_partner_register_altmode(port->partner,
1749 tcpm_log(port, "Failed to register partner SVID 0x%04x",
1753 port->partner_altmode[i] = altmode;
1757 static void tcpm_register_plug_altmodes(struct tcpm_port *port)
1759 struct pd_mode_data *modep = &port->mode_data_prime;
1763 typec_plug_set_num_altmodes(port->plug_prime, modep->altmodes);
1766 altmode = typec_plug_register_altmode(port->plug_prime,
1769 tcpm_log(port, "Failed to register plug SVID 0x%04x",
1773 port->plug_prime_altmode[i] = altmode;
1777 #define supports_modal(port) PD_IDH_MODAL_SUPP((port)->partner_ident.id_header)
1778 #define supports_modal_cable(port) PD_IDH_MODAL_SUPP((port)->cable_ident.id_header)
1779 #define supports_host(port) PD_IDH_HOST_SUPP((port->partner_ident.id_header))
1782 * Helper to determine whether the port is capable of SOP' communication at the
1785 static bool tcpm_can_communicate_sop_prime(struct tcpm_port *port)
1788 if (!port->tcpc->cable_comm_capable || !port->tcpc->cable_comm_capable(port->tcpc))
1803 if (port->vconn_role != TYPEC_SOURCE)
1813 * port that is supplying Vconn is allowed to send packets to a Cable
1816 if (!port->explicit_contract)
1817 return port->pwr_role == TYPEC_SOURCE;
1818 if (port->negotiated_rev == PD_REV30)
1827 if (port->negotiated_rev == PD_REV20)
1828 return port->data_role == TYPEC_HOST;
1832 static bool tcpm_attempt_vconn_swap_discovery(struct tcpm_port *port)
1834 if (!port->tcpc->attempt_vconn_swap_discovery)
1838 if (port->vconn_role == TYPEC_SOURCE)
1846 if (!supports_modal(port) || supports_host(port))
1849 if ((port->negotiated_rev == PD_REV20 && port->data_role == TYPEC_HOST) ||
1850 port->negotiated_rev == PD_REV30)
1851 return port->tcpc->attempt_vconn_swap_discovery(port->tcpc);
1857 static bool tcpm_cable_vdm_supported(struct tcpm_port *port)
1859 return !IS_ERR_OR_NULL(port->cable) &&
1860 typec_cable_is_active(port->cable) &&
1861 supports_modal_cable(port) &&
1862 tcpm_can_communicate_sop_prime(port);
1865 static int tcpm_pd_svdm(struct tcpm_port *port, struct typec_altmode *adev,
1871 struct typec_port *typec = port->typec_port;
1884 tcpm_log(port, "Rx VDM cmd 0x%x type %d cmd %d len %d",
1889 modep_prime = &port->mode_data_prime;
1890 pdev_prime = typec_match_altmode(port->plug_prime_altmode,
1896 * Update SVDM version if cable was discovered before port partner.
1898 if (!IS_ERR_OR_NULL(port->cable) &&
1900 typec_cable_set_svdm_version(port->cable, svdm_version);
1903 modep = &port->mode_data;
1904 pdev = typec_match_altmode(port->partner_altmode,
1913 modep = &port->mode_data;
1914 pdev = typec_match_altmode(port->partner_altmode,
1927 * Only the port or port partner is allowed to initialize SVDM
1928 * commands over SOP'. In case the port partner initializes a
1930 * the message should the TCPM port try to process it.
1940 if (IS_ERR_OR_NULL(port->partner))
1944 typec_partner_set_svdm_version(port->partner,
1949 port->ams = DISCOVER_IDENTITY;
1955 if ((port->data_role == TYPEC_DEVICE || svdm_version >= SVDM_VER_2_0) &&
1956 port->nr_snk_vdo) {
1958 for (i = 0; i < port->nr_snk_vdo_v1; i++)
1959 response[i + 1] = port->snk_vdo_v1[i];
1960 rlen = port->nr_snk_vdo_v1 + 1;
1963 for (i = 0; i < port->nr_snk_vdo; i++)
1964 response[i + 1] = port->snk_vdo[i];
1965 rlen = port->nr_snk_vdo + 1;
1970 port->ams = DISCOVER_SVIDS;
1973 port->ams = DISCOVER_MODES;
1976 port->ams = DFP_TO_UFP_ENTER_MODE;
1979 port->ams = DFP_TO_UFP_EXIT_MODE;
2005 if (IS_ERR_OR_NULL(port->partner) &&
2009 tcpm_ams_finish(port);
2022 * Perform Discover SOP' if the port can communicate with cable
2029 typec_partner_set_svdm_version(port->partner,
2032 if (!IS_ERR_OR_NULL(port->cable) &&
2033 (typec_get_cable_svdm_version(port->typec_port) >
2035 typec_cable_set_svdm_version(port->cable,
2039 svdm_consume_identity(port, p, cnt);
2041 if (tcpm_attempt_vconn_swap_discovery(port)) {
2042 port->send_discover_prime = true;
2043 port->upcoming_state = VCONN_SWAP_SEND;
2044 ret = tcpm_ams_start(port, VCONN_SWAP);
2048 port->upcoming_state = INVALID_STATE;
2049 port->send_discover_prime = false;
2057 if (IS_ERR_OR_NULL(port->cable) &&
2058 tcpm_can_communicate_sop_prime(port)) {
2060 port->send_discover_prime = true;
2078 svdm_consume_identity_sop_prime(port, p, cnt);
2084 if (port->state == SRC_VDM_IDENTITY_REQUEST) {
2085 tcpm_set_state(port, SRC_SEND_CAPABILITIES, 0);
2102 if (svdm_consume_svids(port, p, cnt, rx_sop_type)) {
2107 if (modep->nsvids && supports_modal(port)) {
2124 svdm_consume_modes(port, p, cnt, rx_sop_type);
2132 } else if (tcpm_cable_vdm_supported(port)) {
2139 tcpm_register_partner_altmodes(port);
2143 svdm_consume_modes(port, p, cnt, rx_sop_type);
2153 tcpm_register_plug_altmodes(port);
2154 tcpm_register_partner_altmodes(port);
2195 tcpm_ams_finish(port);
2228 static void tcpm_pd_handle_msg(struct tcpm_port *port,
2232 static void tcpm_handle_vdm_request(struct tcpm_port *port,
2246 adev = typec_match_altmode(port->port_altmode, ALTMODE_DISCOVERY_MAX,
2249 if (port->vdm_state == VDM_STATE_BUSY) {
2252 port->vdm_state = VDM_STATE_WAIT_RSP_BUSY;
2253 port->vdo_retry = (p[0] & ~VDO_CMDT_MASK) |
2255 mod_vdm_delayed_work(port, PD_T_VDM_BUSY);
2258 port->vdm_state = VDM_STATE_DONE;
2261 if (PD_VDO_SVDM(p[0]) && (adev || tcpm_vdm_ams(port) || port->nr_snk_vdo)) {
2275 port->vdm_sm_running = true;
2276 rlen = tcpm_pd_svdm(port, adev, p, cnt, response, &adev_action,
2279 if (port->negotiated_rev >= PD_REV30)
2280 tcpm_pd_handle_msg(port, PD_MSG_CTRL_NOT_SUPP, NONE_AMS);
2284 * We are done with any state stored in the port struct now, except
2285 * for any port struct changes done by the tcpm_queue_vdm() call
2292 * 1. tcpm_pd_rx_handler take the tcpm port lock
2298 * tcpm port lock
2302 mutex_unlock(&port->lock);
2323 port->typec_port);
2335 port->typec_port);
2348 tcpm_log(port, "typec_altmode_attention no port partner altmode");
2360 mutex_lock(&port->lock);
2363 tcpm_queue_vdm(port, response[0], &response[1], rlen - 1, response_tx_sop_type);
2365 port->vdm_sm_running = false;
2368 static void tcpm_send_vdm(struct tcpm_port *port, u32 vid, int cmd,
2377 * If the port partner is discovered, then the port partner's
2380 svdm_version = typec_get_cable_svdm_version(port->typec_port);
2385 svdm_version = typec_get_negotiated_svdm_version(port->typec_port);
2390 svdm_version = typec_get_negotiated_svdm_version(port->typec_port);
2403 tcpm_queue_vdm(port, header, data, count, tx_sop_type);
2432 static void vdm_run_state_machine(struct tcpm_port *port)
2436 u32 vdo_hdr = port->vdo_data[0];
2439 switch (port->vdm_state) {
2442 if (!port->attached) {
2443 port->vdm_state = VDM_STATE_ERR_BUSY;
2451 if (port->state != SRC_READY && port->state != SNK_READY &&
2452 port->state != SRC_VDM_IDENTITY_REQUEST) {
2453 port->vdm_sm_running = false;
2461 res = tcpm_ams_start(port, DISCOVER_IDENTITY);
2463 switch (port->tx_sop_type) {
2465 port->send_discover_prime = false;
2468 port->send_discover = false;
2471 port->send_discover = false;
2475 port->vdo_data[0] = 0;
2476 mod_send_discover_delayed_work(port,
2481 res = tcpm_ams_start(port, DISCOVER_SVIDS);
2484 res = tcpm_ams_start(port, DISCOVER_MODES);
2487 res = tcpm_ams_start(port, DFP_TO_UFP_ENTER_MODE);
2490 res = tcpm_ams_start(port, DFP_TO_UFP_EXIT_MODE);
2493 res = tcpm_ams_start(port, ATTENTION);
2496 res = tcpm_ams_start(port, STRUCTURED_VDMS);
2504 port->vdm_state = VDM_STATE_ERR_BUSY;
2509 port->vdm_state = VDM_STATE_SEND_MESSAGE;
2510 mod_vdm_delayed_work(port, (port->negotiated_rev >= PD_REV30 &&
2511 port->pwr_role == TYPEC_SOURCE &&
2517 port->vdo_data[0] = port->vdo_retry;
2518 port->vdo_count = 1;
2519 port->vdm_state = VDM_STATE_READY;
2520 tcpm_ams_finish(port);
2523 port->vdm_state = VDM_STATE_ERR_TMOUT;
2524 if (port->ams != NONE_AMS)
2525 tcpm_ams_finish(port);
2533 if (port->state == SRC_VDM_IDENTITY_REQUEST) {
2534 tcpm_ams_finish(port);
2535 port->vdm_state = VDM_STATE_DONE;
2536 tcpm_set_state(port, SRC_SEND_CAPABILITIES, 0);
2543 } else if (port->vdm_retries < 3) {
2544 tcpm_log(port, "VDM Tx error, retry");
2545 port->vdm_retries++;
2546 port->vdm_state = VDM_STATE_READY;
2548 tcpm_ams_finish(port);
2550 tcpm_ams_finish(port);
2551 if (port->tx_sop_type == TCPC_TX_SOP)
2560 port->vdo_data[0] = 0;
2563 port->typec_port),
2565 tcpm_queue_vdm(port, response[0], &response[1],
2573 tcpm_register_partner_altmodes(port);
2576 tcpm_register_partner_altmodes(port);
2586 if (port->tx_sop_type == TCPC_TX_SOP_PRIME) {
2590 port->negotiated_rev_prime,
2591 port->message_id_prime,
2592 port->vdo_count);
2595 port->pwr_role,
2596 port->data_role,
2597 port->negotiated_rev,
2598 port->message_id,
2599 port->vdo_count);
2601 for (i = 0; i < port->vdo_count; i++)
2602 msg.payload[i] = cpu_to_le32(port->vdo_data[i]);
2603 res = tcpm_pd_transmit(port, port->tx_sop_type, &msg);
2605 port->vdm_state = VDM_STATE_ERR_SEND;
2609 port->vdm_retries = 0;
2610 port->vdo_data[0] = 0;
2611 port->vdm_state = VDM_STATE_BUSY;
2613 mod_vdm_delayed_work(port, timeout);
2623 struct tcpm_port *port = container_of(work, struct tcpm_port, vdm_state_machine);
2626 mutex_lock(&port->lock);
2629 * Continue running as long as the port is not busy and there was
2633 prev_state = port->vdm_state;
2634 vdm_run_state_machine(port);
2635 } while (port->vdm_state != prev_state &&
2636 port->vdm_state != VDM_STATE_BUSY &&
2637 port->vdm_state != VDM_STATE_SEND_MESSAGE);
2639 if (port->vdm_state < VDM_STATE_READY)
2640 port->vdm_sm_running = false;
2642 mutex_unlock(&port->lock);
2676 static enum pdo_err tcpm_caps_err(struct tcpm_port *port, const u32 *pdo,
2744 tcpm_log_force(port, " Unknown pdo type");
2752 static int tcpm_validate_caps(struct tcpm_port *port, const u32 *pdo,
2755 enum pdo_err err_index = tcpm_caps_err(port, pdo, nr_pdo);
2758 tcpm_log_force(port, " %s", pdo_err_msg[err_index]);
2767 struct tcpm_port *port = typec_altmode_get_drvdata(altmode);
2771 svdm_version = typec_get_negotiated_svdm_version(port->typec_port);
2778 tcpm_queue_vdm_unlocked(port, header, vdo, vdo ? 1 : 0, TCPC_TX_SOP);
2784 struct tcpm_port *port = typec_altmode_get_drvdata(altmode);
2788 svdm_version = typec_get_negotiated_svdm_version(port->typec_port);
2795 tcpm_queue_vdm_unlocked(port, header, NULL, 0, TCPC_TX_SOP);
2802 struct tcpm_port *port = typec_altmode_get_drvdata(altmode);
2804 tcpm_queue_vdm_unlocked(port, header, data, count - 1, TCPC_TX_SOP);
2819 struct tcpm_port *port = typec_altmode_get_drvdata(altmode);
2823 svdm_version = typec_get_cable_svdm_version(port->typec_port);
2830 tcpm_queue_vdm_unlocked(port, header, vdo, vdo ? 1 : 0, TCPC_TX_SOP_PRIME);
2836 struct tcpm_port *port = typec_altmode_get_drvdata(altmode);
2840 svdm_version = typec_get_cable_svdm_version(port->typec_port);
2847 tcpm_queue_vdm_unlocked(port, header, NULL, 0, TCPC_TX_SOP_PRIME);
2854 struct tcpm_port *port = typec_altmode_get_drvdata(altmode);
2856 tcpm_queue_vdm_unlocked(port, header, data, count - 1, TCPC_TX_SOP_PRIME);
2870 static inline enum tcpm_state ready_state(struct tcpm_port *port)
2872 if (port->pwr_role == TYPEC_SOURCE)
2878 static int tcpm_pd_send_control(struct tcpm_port *port,
2882 static void tcpm_handle_alert(struct tcpm_port *port, const __le32 *payload,
2889 tcpm_log(port, "Alert message received with no type");
2890 tcpm_queue_message(port, PD_MSG_CTRL_NOT_SUPP);
2896 if (port->pwr_role == TYPEC_SOURCE) {
2897 port->upcoming_state = GET_STATUS_SEND;
2898 tcpm_ams_start(port, GETTING_SOURCE_SINK_STATUS);
2904 port->ams = GETTING_SOURCE_SINK_STATUS;
2905 tcpm_set_state(port, GET_STATUS_SEND, 0);
2908 tcpm_queue_message(port, PD_MSG_CTRL_NOT_SUPP);
2912 static int tcpm_set_auto_vbus_discharge_threshold(struct tcpm_port *port,
2918 if (!port->tcpc->set_auto_vbus_discharge_threshold)
2921 ret = port->tcpc->set_auto_vbus_discharge_threshold(port->tcpc, mode, pps_active,
2923 tcpm_log_force(port,
2930 static void tcpm_pd_handle_state(struct tcpm_port *port,
2935 switch (port->state) {
2938 port->ams = ams;
2939 tcpm_set_state(port, state, delay_ms);
2945 tcpm_set_state(port, HARD_RESET_SEND, 0);
2948 if (!tcpm_ams_interruptible(port)) {
2949 tcpm_set_state(port, port->pwr_role == TYPEC_SOURCE ?
2955 port->upcoming_state = state;
2956 port->next_ams = ams;
2957 tcpm_set_state(port, ready_state(port), delay_ms);
2963 static void tcpm_pd_handle_msg(struct tcpm_port *port,
2967 switch (port->state) {
2970 port->ams = ams;
2971 tcpm_queue_message(port, message);
2977 tcpm_set_state(port, HARD_RESET_SEND, 0);
2980 if (!tcpm_ams_interruptible(port)) {
2981 tcpm_set_state(port, port->pwr_role == TYPEC_SOURCE ?
2986 port->next_ams = ams;
2987 tcpm_set_state(port, ready_state(port), 0);
2989 tcpm_queue_message(port, message);
2995 static int tcpm_register_source_caps(struct tcpm_port *port)
2997 struct usb_power_delivery_desc desc = { port->negotiated_rev };
3001 if (!port->partner_pd)
3002 port->partner_pd = usb_power_delivery_register(NULL, &desc);
3003 if (IS_ERR(port->partner_pd))
3004 return PTR_ERR(port->partner_pd);
3006 memcpy(caps.pdo, port->source_caps, sizeof(u32) * port->nr_source_caps);
3009 cap = usb_power_delivery_register_capabilities(port->partner_pd, &caps);
3013 port->partner_source_caps = cap;
3018 static int tcpm_register_sink_caps(struct tcpm_port *port)
3020 struct usb_power_delivery_desc desc = { port->negotiated_rev };
3024 if (!port->partner_pd)
3025 port->partner_pd = usb_power_delivery_register(NULL, &desc);
3026 if (IS_ERR(port->partner_pd))
3027 return PTR_ERR(port->partner_pd);
3029 memcpy(caps.pdo, port->sink_caps, sizeof(u32) * port->nr_sink_caps);
3032 cap = usb_power_delivery_register_capabilities(port->partner_pd, &caps);
3036 port->partner_sink_caps = cap;
3041 static void tcpm_pd_data_request(struct tcpm_port *port,
3053 if (tcpm_vdm_ams(port) && type != PD_DATA_VENDOR_DEF) {
3054 port->vdm_state = VDM_STATE_ERR_BUSY;
3055 tcpm_ams_finish(port);
3056 mod_vdm_delayed_work(port, 0);
3062 port->source_caps[i] = le32_to_cpu(msg->payload[i]);
3064 port->nr_source_caps = cnt;
3066 tcpm_log_source_caps(port);
3068 tcpm_validate_caps(port, port->source_caps,
3069 port->nr_source_caps);
3071 tcpm_register_source_caps(port);
3079 if (port->ams == GET_SOURCE_CAPABILITIES)
3080 tcpm_ams_finish(port);
3085 port->negotiated_rev = rev;
3086 if (port->negotiated_rev_prime > port->negotiated_rev)
3087 port->negotiated_rev_prime = port->negotiated_rev;
3090 if (port->pwr_role == TYPEC_SOURCE) {
3091 if (port->ams == GET_SOURCE_CAPABILITIES)
3092 tcpm_pd_handle_state(port, SRC_READY, NONE_AMS, 0);
3095 tcpm_pd_handle_msg(port,
3096 port->negotiated_rev < PD_REV30 ?
3100 } else if (port->state == SNK_WAIT_CAPABILITIES) {
3114 port->ams = POWER_NEGOTIATION;
3115 port->in_ams = true;
3116 tcpm_set_state(port, SNK_NEGOTIATE_CAPABILITIES, 0);
3118 if (port->ams == GET_SOURCE_CAPABILITIES)
3119 tcpm_ams_finish(port);
3120 tcpm_pd_handle_state(port, SNK_NEGOTIATE_CAPABILITIES,
3131 tcpm_pd_handle_msg(port,
3132 port->negotiated_rev < PD_REV30 ?
3140 port->negotiated_rev = rev;
3141 if (port->negotiated_rev_prime > port->negotiated_rev)
3142 port->negotiated_rev_prime = port->negotiated_rev;
3145 if (port->pwr_role != TYPEC_SOURCE || cnt != 1) {
3146 tcpm_pd_handle_msg(port,
3147 port->negotiated_rev < PD_REV30 ?
3154 port->sink_request = le32_to_cpu(msg->payload[0]);
3156 if (port->vdm_sm_running && port->explicit_contract) {
3157 tcpm_pd_handle_msg(port, PD_MSG_CTRL_WAIT, port->ams);
3161 if (port->state == SRC_SEND_CAPABILITIES)
3162 tcpm_set_state(port, SRC_NEGOTIATE_CAPABILITIES, 0);
3164 tcpm_pd_handle_state(port, SRC_NEGOTIATE_CAPABILITIES,
3170 port->sink_caps[i] = le32_to_cpu(msg->payload[i]);
3172 partner_frs_current = (port->sink_caps[0] & PDO_FIXED_FRS_CURR_MASK) >>
3175 port->new_source_frs_current);
3176 tcpm_log(port,
3178 partner_frs_current, port->new_source_frs_current, frs_enable ? 'y' : 'n');
3180 ret = port->tcpc->enable_frs(port->tcpc, true);
3181 tcpm_log(port, "Enable FRS %s, ret:%d\n", ret ? "fail" : "success", ret);
3184 port->nr_sink_caps = cnt;
3185 port->sink_cap_done = true;
3186 tcpm_register_sink_caps(port);
3188 if (port->ams == GET_SINK_CAPABILITIES)
3189 tcpm_set_state(port, ready_state(port), 0);
3192 tcpm_pd_handle_msg(port,
3193 port->negotiated_rev < PD_REV30 ?
3199 tcpm_handle_vdm_request(port, msg->payload, cnt, rx_sop_type);
3202 port->bist_request = le32_to_cpu(msg->payload[0]);
3203 tcpm_pd_handle_state(port, BIST_RX, BIST, 0);
3206 if (port->state != SRC_READY && port->state != SNK_READY)
3207 tcpm_pd_handle_state(port, port->pwr_role == TYPEC_SOURCE ?
3211 tcpm_handle_alert(port, msg->payload, cnt);
3216 tcpm_pd_handle_msg(port, port->negotiated_rev < PD_REV30 ?
3222 tcpm_pd_handle_msg(port, port->negotiated_rev < PD_REV30 ?
3226 tcpm_log(port, "Unrecognized data message type %#x", type);
3231 static void tcpm_pps_complete(struct tcpm_port *port, int result)
3233 if (port->pps_pending) {
3234 port->pps_status = result;
3235 port->pps_pending = false;
3236 complete(&port->pps_complete);
3240 static void tcpm_pd_ctrl_request(struct tcpm_port *port,
3252 if (tcpm_vdm_ams(port) && type != PD_CTRL_NOT_SUPP && type != PD_CTRL_GOOD_CRC) {
3253 port->vdm_state = VDM_STATE_ERR_BUSY;
3254 tcpm_ams_finish(port);
3255 mod_vdm_delayed_work(port, 0);
3263 tcpm_pd_handle_msg(port, PD_MSG_DATA_SOURCE_CAP, GET_SOURCE_CAPABILITIES);
3266 tcpm_pd_handle_msg(port, PD_MSG_DATA_SINK_CAP, GET_SINK_CAPABILITIES);
3271 switch (port->state) {
3273 if (port->vbus_present) {
3274 tcpm_set_current_limit(port,
3275 port->req_current_limit,
3276 port->req_supply_voltage);
3277 port->explicit_contract = true;
3278 tcpm_set_auto_vbus_discharge_threshold(port,
3280 port->pps_data.active,
3281 port->supply_voltage);
3282 tcpm_set_state(port, SNK_READY, 0);
3288 tcpm_set_state(port,
3293 tcpm_set_state(port, PR_SWAP_SRC_SNK_SINK_ON, 0);
3296 tcpm_set_state(port, PR_SWAP_SNK_SRC_SOURCE_ON, 0);
3299 tcpm_set_state(port, VCONN_SWAP_TURN_OFF_VCONN, 0);
3302 tcpm_set_state(port, FR_SWAP_SNK_SRC_NEW_SINK_READY, 0);
3305 tcpm_pd_handle_state(port,
3306 port->pwr_role == TYPEC_SOURCE ?
3316 switch (port->state) {
3319 if (port->explicit_contract)
3325 tcpm_set_auto_vbus_discharge_threshold(port, TYPEC_PWR_MODE_PD,
3326 port->pps_data.active,
3327 port->supply_voltage);
3328 tcpm_set_state(port, next_state, 0);
3332 port->pps_data.req_out_volt = port->supply_voltage;
3333 port->pps_data.req_op_curr = port->current_limit;
3334 port->pps_status = (type == PD_CTRL_WAIT ?
3338 tcpm_set_auto_vbus_discharge_threshold(port, TYPEC_PWR_MODE_PD,
3339 port->pps_data.active,
3340 port->supply_voltage);
3342 tcpm_set_state(port, SNK_READY, 0);
3345 port->swap_status = (type == PD_CTRL_WAIT ?
3347 tcpm_set_state(port, DR_SWAP_CANCEL, 0);
3350 port->swap_status = (type == PD_CTRL_WAIT ?
3352 tcpm_set_state(port, PR_SWAP_CANCEL, 0);
3355 port->swap_status = (type == PD_CTRL_WAIT ?
3357 tcpm_set_state(port, VCONN_SWAP_CANCEL, 0);
3360 tcpm_set_state(port, FR_SWAP_CANCEL, 0);
3363 port->sink_cap_done = true;
3364 tcpm_set_state(port, ready_state(port), 0);
3367 * Some port partners do not support GET_STATUS, avoid soft reset the link to
3371 tcpm_set_state(port, ready_state(port), 0);
3375 if (port->vdm_state > VDM_STATE_READY) {
3376 port->vdm_state = VDM_STATE_DONE;
3377 if (tcpm_vdm_ams(port))
3378 tcpm_ams_finish(port);
3379 mod_vdm_delayed_work(port, 0);
3384 tcpm_pd_handle_state(port,
3385 port->pwr_role == TYPEC_SOURCE ?
3393 switch (port->state) {
3395 port->pps_data.active = false;
3396 tcpm_set_state(port, SNK_TRANSITION_SINK, 0);
3399 port->pps_data.active = true;
3400 port->pps_data.min_volt = port->pps_data.req_min_volt;
3401 port->pps_data.max_volt = port->pps_data.req_max_volt;
3402 port->pps_data.max_curr = port->pps_data.req_max_curr;
3403 port->req_supply_voltage = port->pps_data.req_out_volt;
3404 port->req_current_limit = port->pps_data.req_op_curr;
3405 power_supply_changed(port->psy);
3406 tcpm_set_state(port, SNK_TRANSITION_SINK, 0);
3409 if (port->ams == SOFT_RESET_AMS)
3410 tcpm_ams_finish(port);
3416 if (rev < port->negotiated_rev_prime)
3417 port->negotiated_rev_prime = rev;
3418 tcpm_set_state(port, ready_state(port), 0);
3421 if (port->pwr_role == TYPEC_SOURCE) {
3422 port->upcoming_state = SRC_SEND_CAPABILITIES;
3423 tcpm_ams_start(port, POWER_NEGOTIATION);
3425 tcpm_set_state(port, SNK_WAIT_CAPABILITIES, 0);
3429 tcpm_set_state(port, DR_SWAP_CHANGE_DR, 0);
3432 tcpm_set_state(port, PR_SWAP_START, 0);
3435 tcpm_set_state(port, VCONN_SWAP_START, 0);
3438 tcpm_set_state(port, FR_SWAP_SNK_SRC_TRANSITION_TO_OFF, 0);
3441 tcpm_pd_handle_state(port,
3442 port->pwr_role == TYPEC_SOURCE ?
3450 port->ams = SOFT_RESET_AMS;
3451 tcpm_set_state(port, SOFT_RESET, 0);
3457 * alternate modes shall trigger a port reset.
3459 if (port->typec_caps.data != TYPEC_PORT_DRD) {
3460 tcpm_pd_handle_msg(port,
3461 port->negotiated_rev < PD_REV30 ?
3466 if (port->send_discover && port->negotiated_rev < PD_REV30) {
3467 tcpm_queue_message(port, PD_MSG_CTRL_WAIT);
3471 tcpm_pd_handle_state(port, DR_SWAP_ACCEPT, DATA_ROLE_SWAP, 0);
3475 if (port->port_type != TYPEC_PORT_DRP) {
3476 tcpm_pd_handle_msg(port,
3477 port->negotiated_rev < PD_REV30 ?
3482 if (port->send_discover && port->negotiated_rev < PD_REV30) {
3483 tcpm_queue_message(port, PD_MSG_CTRL_WAIT);
3487 tcpm_pd_handle_state(port, PR_SWAP_ACCEPT, POWER_ROLE_SWAP, 0);
3491 if (port->send_discover && port->negotiated_rev < PD_REV30) {
3492 tcpm_queue_message(port, PD_MSG_CTRL_WAIT);
3496 tcpm_pd_handle_state(port, VCONN_SWAP_ACCEPT, VCONN_SWAP, 0);
3504 tcpm_pd_handle_msg(port,
3505 port->negotiated_rev < PD_REV30 ?
3511 tcpm_pd_handle_msg(port,
3512 port->negotiated_rev < PD_REV30 ?
3516 tcpm_log(port, "Unrecognized ctrl message type %#x", type);
3521 static void tcpm_pd_ext_msg_request(struct tcpm_port *port,
3528 if (tcpm_vdm_ams(port)) {
3529 port->vdm_state = VDM_STATE_ERR_BUSY;
3530 tcpm_ams_finish(port);
3531 mod_vdm_delayed_work(port, 0);
3535 tcpm_pd_handle_msg(port, PD_MSG_CTRL_NOT_SUPP, NONE_AMS);
3536 tcpm_log(port, "Unchunked extended messages unsupported");
3541 tcpm_pd_handle_state(port, CHUNK_NOT_SUPP, NONE_AMS, PD_T_CHUNK_NOT_SUPP);
3542 tcpm_log(port, "Chunk handling not yet supported");
3549 if (port->ams == GETTING_SOURCE_SINK_STATUS) {
3550 tcpm_ams_finish(port);
3551 tcpm_set_state(port, ready_state(port), 0);
3554 tcpm_pd_handle_state(port, port->pwr_role == TYPEC_SOURCE ?
3571 tcpm_pd_handle_msg(port, PD_MSG_CTRL_NOT_SUPP, NONE_AMS);
3574 tcpm_pd_handle_msg(port, PD_MSG_CTRL_NOT_SUPP, NONE_AMS);
3575 tcpm_log(port, "Unrecognized extended message type %#x", type);
3586 struct tcpm_port *port = event->port;
3589 mutex_lock(&port->lock);
3591 tcpm_log(port, "PD RX, header: %#x [%d]", le16_to_cpu(msg->header),
3592 port->attached);
3594 if (port->attached) {
3603 !tcpm_can_communicate_sop_prime(port))
3617 if (msgid == port->rx_msgid_prime)
3619 port->rx_msgid_prime = msgid;
3623 if (msgid == port->rx_msgid && type != PD_CTRL_SOFT_RESET)
3625 port->rx_msgid = msgid;
3634 (port->data_role == TYPEC_HOST) && rx_sop_type == TCPC_TX_SOP) {
3635 tcpm_log(port,
3637 tcpm_set_state(port, ERROR_RECOVERY, 0);
3640 tcpm_pd_ext_msg_request(port, msg);
3642 tcpm_pd_data_request(port, msg, rx_sop_type);
3644 tcpm_pd_ctrl_request(port, msg, rx_sop_type);
3649 mutex_unlock(&port->lock);
3653 void tcpm_pd_receive(struct tcpm_port *port, const struct pd_message *msg,
3663 event->port = port;
3666 kthread_queue_work(port->wq, &event->work);
3670 static int tcpm_pd_send_control(struct tcpm_port *port,
3682 port->negotiated_rev,
3683 port->message_id_prime,
3688 port->pwr_role,
3689 port->data_role,
3690 port->negotiated_rev,
3691 port->message_id,
3696 port->pwr_role,
3697 port->data_role,
3698 port->negotiated_rev,
3699 port->message_id,
3704 return tcpm_pd_transmit(port, tx_sop_type, &msg);
3712 static bool tcpm_send_queued_message(struct tcpm_port *port)
3718 queued_message = port->queued_message;
3719 port->queued_message = PD_MSG_NONE;
3723 tcpm_pd_send_control(port, PD_CTRL_WAIT, TCPC_TX_SOP);
3726 tcpm_pd_send_control(port, PD_CTRL_REJECT, TCPC_TX_SOP);
3729 tcpm_pd_send_control(port, PD_CTRL_NOT_SUPP, TCPC_TX_SOP);
3732 ret = tcpm_pd_send_sink_caps(port);
3734 tcpm_log(port, "Unable to send snk caps, ret=%d", ret);
3735 tcpm_set_state(port, SNK_SOFT_RESET, 0);
3737 tcpm_ams_finish(port);
3740 ret = tcpm_pd_send_source_caps(port);
3742 tcpm_log(port,
3745 tcpm_set_state(port, SOFT_RESET_SEND, 0);
3746 } else if (port->pwr_role == TYPEC_SOURCE) {
3747 tcpm_ams_finish(port);
3748 tcpm_set_state(port, HARD_RESET_SEND,
3751 tcpm_ams_finish(port);
3757 } while (port->queued_message != PD_MSG_NONE);
3759 if (port->delayed_state != INVALID_STATE) {
3760 if (ktime_after(port->delayed_runtime, ktime_get())) {
3761 mod_tcpm_delayed_work(port, ktime_to_ms(ktime_sub(port->delayed_runtime,
3765 port->delayed_state = INVALID_STATE;
3770 static int tcpm_pd_check_request(struct tcpm_port *port)
3772 u32 pdo, rdo = port->sink_request;
3777 if (!index || index > port->nr_src_pdo)
3780 pdo = port->src_pdo[index - 1];
3795 tcpm_log(port,
3799 tcpm_log(port,
3813 tcpm_log(port,
3822 port->op_vsafe5v = index == 1;
3830 static int tcpm_pd_select_pdo(struct tcpm_port *port, int *sink_pdo,
3838 port->pps_data.supported = false;
3839 port->usb_type = POWER_SUPPLY_USB_TYPE_PD;
3840 power_supply_changed(port->psy);
3846 for (i = 0; i < port->nr_source_caps; i++) {
3847 u32 pdo = port->source_caps[i];
3862 port->pps_data.supported = true;
3863 port->usb_type =
3865 power_supply_changed(port->psy);
3869 tcpm_log(port, "Invalid source PDO type, ignoring");
3885 tcpm_log(port, "Invalid source PDO type, ignoring");
3889 for (j = 0; j < port->nr_snk_pdo; j++) {
3890 pdo = port->snk_pdo[j];
3905 tcpm_log(port, "Invalid sink PDO type, ignoring");
3927 static unsigned int tcpm_pd_select_pps_apdo(struct tcpm_port *port)
3933 for (i = 1; i < port->nr_source_caps; ++i) {
3934 pdo = port->source_caps[i];
3939 tcpm_log(port, "Not PPS APDO (source), ignoring");
3943 if (port->pps_data.req_out_volt > pdo_pps_apdo_max_voltage(pdo) ||
3944 port->pps_data.req_out_volt < pdo_pps_apdo_min_voltage(pdo))
3948 max_op_ma = min(src_ma, port->pps_data.req_op_curr);
3949 op_mw = max_op_ma * port->pps_data.req_out_volt / 1000;
3956 tcpm_log(port, "Not APDO type (source), ignoring");
3962 src = port->source_caps[src_pdo];
3964 port->pps_data.req_min_volt = pdo_pps_apdo_min_voltage(src);
3965 port->pps_data.req_max_volt = pdo_pps_apdo_max_voltage(src);
3966 port->pps_data.req_max_curr = pdo_pps_apdo_max_current(src);
3967 port->pps_data.req_op_curr = min(port->pps_data.req_max_curr,
3968 port->pps_data.req_op_curr);
3974 static int tcpm_pd_build_request(struct tcpm_port *port, u32 *rdo)
3984 ret = tcpm_pd_select_pdo(port, &snk_pdo_index, &src_pdo_index);
3988 pdo = port->source_caps[src_pdo_index];
3989 matching_snk_pdo = port->snk_pdo[snk_pdo_index];
4001 tcpm_log(port, "Invalid PDO selected!");
4019 if (mw < port->operating_snk_mw) {
4029 tcpm_log(port, "cc=%d cc1=%d cc2=%d vbus=%d vconn=%s polarity=%d",
4030 port->cc_req, port->cc1, port->cc2, port->vbus_source,
4031 port->vconn_role == TYPEC_SOURCE ? "source" : "sink",
4032 port->polarity);
4037 tcpm_log(port, "Requesting PDO %d: %u mV, %u mW%s",
4043 tcpm_log(port, "Requesting PDO %d: %u mV, %u mA%s",
4048 port->req_current_limit = ma;
4049 port->req_supply_voltage = mv;
4054 static int tcpm_pd_send_request(struct tcpm_port *port)
4060 ret = tcpm_pd_build_request(port, &rdo);
4068 tcpm_set_auto_vbus_discharge_threshold(port, TYPEC_PWR_MODE_USB, false, 0);
4072 port->pwr_role,
4073 port->data_role,
4074 port->negotiated_rev,
4075 port->message_id, 1);
4078 return tcpm_pd_transmit(port, TCPC_TX_SOP, &msg);
4081 static int tcpm_pd_build_pps_request(struct tcpm_port *port, u32 *rdo)
4086 src_pdo_index = tcpm_pd_select_pps_apdo(port);
4090 max_mv = port->pps_data.req_max_volt;
4091 max_ma = port->pps_data.req_max_curr;
4092 out_mv = port->pps_data.req_out_volt;
4093 op_ma = port->pps_data.req_op_curr;
4098 if (op_mw < port->operating_snk_mw) {
4105 op_ma = (port->operating_snk_mw * 1000) / out_mv;
4106 if ((port->operating_snk_mw * 1000) % out_mv)
4112 out_mv = (port->operating_snk_mw * 1000) / op_ma;
4113 if ((port->operating_snk_mw * 1000) % op_ma)
4119 tcpm_log(port, "Invalid PPS APDO selected!");
4125 tcpm_log(port, "cc=%d cc1=%d cc2=%d vbus=%d vconn=%s polarity=%d",
4126 port->cc_req, port->cc1, port->cc2, port->vbus_source,
4127 port->vconn_role == TYPEC_SOURCE ? "source" : "sink",
4128 port->polarity);
4132 tcpm_log(port, "Requesting APDO %d: %u mV, %u mA",
4135 port->pps_data.req_op_curr = op_ma;
4136 port->pps_data.req_out_volt = out_mv;
4141 static int tcpm_pd_send_pps_request(struct tcpm_port *port)
4147 ret = tcpm_pd_build_pps_request(port, &rdo);
4152 tcpm_set_auto_vbus_discharge_threshold(port, TYPEC_PWR_MODE_USB, false, 0);
4156 port->pwr_role,
4157 port->data_role,
4158 port->negotiated_rev,
4159 port->message_id, 1);
4162 return tcpm_pd_transmit(port, TCPC_TX_SOP, &msg);
4165 static int tcpm_set_vbus(struct tcpm_port *port, bool enable)
4169 if (enable && port->vbus_charge)
4172 tcpm_log(port, "vbus:=%d charge=%d", enable, port->vbus_charge);
4174 ret = port->tcpc->set_vbus(port->tcpc, enable, port->vbus_charge);
4178 port->vbus_source = enable;
4182 static int tcpm_set_charge(struct tcpm_port *port, bool charge)
4186 if (charge && port->vbus_source)
4189 if (charge != port->vbus_charge) {
4190 tcpm_log(port, "vbus=%d charge:=%d", port->vbus_source, charge);
4191 ret = port->tcpc->set_vbus(port->tcpc, port->vbus_source,
4196 port->vbus_charge = charge;
4197 power_supply_changed(port->psy);
4201 static bool tcpm_start_toggling(struct tcpm_port *port, enum typec_cc_status cc)
4205 if (!port->tcpc->start_toggling)
4208 tcpm_log_force(port, "Start toggling");
4209 ret = port->tcpc->start_toggling(port->tcpc, port->port_type, cc);
4213 static int tcpm_init_vbus(struct tcpm_port *port)
4217 ret = port->tcpc->set_vbus(port->tcpc, false, false);
4218 port->vbus_source = false;
4219 port->vbus_charge = false;
4223 static int tcpm_init_vconn(struct tcpm_port *port)
4227 ret = port->tcpc->set_vconn(port->tcpc, false);
4228 port->vconn_role = TYPEC_SINK;
4232 static void tcpm_typec_connect(struct tcpm_port *port)
4234 if (!port->connected) {
4236 memset(&port->partner_ident, 0, sizeof(port->partner_ident));
4237 port->partner_desc.usb_pd = port->pd_capable;
4238 if (tcpm_port_is_debug(port))
4239 port->partner_desc.accessory = TYPEC_ACCESSORY_DEBUG;
4240 else if (tcpm_port_is_audio(port))
4241 port->partner_desc.accessory = TYPEC_ACCESSORY_AUDIO;
4243 port->partner_desc.accessory = TYPEC_ACCESSORY_NONE;
4244 port->partner = typec_register_partner(port->typec_port,
4245 &port->partner_desc);
4246 port->connected = true;
4247 typec_partner_set_usb_power_delivery(port->partner, port->partner_pd);
4251 static int tcpm_src_attach(struct tcpm_port *port)
4254 port->cc2 == TYPEC_CC_RD ? TYPEC_POLARITY_CC2
4258 if (port->attached)
4261 ret = tcpm_set_polarity(port, polarity);
4265 tcpm_enable_auto_vbus_discharge(port, true);
4267 ret = tcpm_set_roles(port, true, TYPEC_SOURCE, tcpm_data_role_for_source(port));
4271 if (port->pd_supported) {
4272 ret = port->tcpc->set_pd_rx(port->tcpc, true);
4280 * Enable VCONN only if the non-RD port is set to RA.
4282 if ((polarity == TYPEC_POLARITY_CC1 && port->cc2 == TYPEC_CC_RA) ||
4283 (polarity == TYPEC_POLARITY_CC2 && port->cc1 == TYPEC_CC_RA)) {
4284 ret = tcpm_set_vconn(port, true);
4289 ret = tcpm_set_vbus(port, true);
4293 port->pd_capable = false;
4295 port->partner = NULL;
4297 port->attached = true;
4298 port->send_discover = true;
4299 port->send_discover_prime = false;
4304 tcpm_set_vconn(port, false);
4306 if (port->pd_supported)
4307 port->tcpc->set_pd_rx(port->tcpc, false);
4309 tcpm_mux_set(port, TYPEC_STATE_SAFE, USB_ROLE_NONE,
4314 static void tcpm_typec_disconnect(struct tcpm_port *port)
4317 * Unregister plug/cable outside of port->connected because cable can
4318 * be discovered before SRC_READY/SNK_READY states where port->connected
4321 typec_unregister_plug(port->plug_prime);
4322 typec_unregister_cable(port->cable);
4323 port->plug_prime = NULL;
4324 port->cable = NULL;
4325 if (port->connected) {
4326 typec_partner_set_usb_power_delivery(port->partner, NULL);
4327 typec_unregister_partner(port->partner);
4328 port->partner = NULL;
4329 port->connected = false;
4333 static void tcpm_unregister_altmodes(struct tcpm_port *port)
4335 struct pd_mode_data *modep = &port->mode_data;
4336 struct pd_mode_data *modep_prime = &port->mode_data_prime;
4340 typec_unregister_altmode(port->partner_altmode[i]);
4341 port->partner_altmode[i] = NULL;
4344 typec_unregister_altmode(port->plug_prime_altmode[i]);
4345 port->plug_prime_altmode[i] = NULL;
4352 static void tcpm_set_partner_usb_comm_capable(struct tcpm_port *port, bool capable)
4354 tcpm_log(port, "Setting usb_comm capable %s", capable ? "true" : "false");
4356 if (port->tcpc->set_partner_usb_comm_capable)
4357 port->tcpc->set_partner_usb_comm_capable(port->tcpc, capable);
4360 static void tcpm_reset_port(struct tcpm_port *port)
4362 tcpm_enable_auto_vbus_discharge(port, false);
4363 port->in_ams = false;
4364 port->ams = NONE_AMS;
4365 port->vdm_sm_running = false;
4366 tcpm_unregister_altmodes(port);
4367 tcpm_typec_disconnect(port);
4368 port->attached = false;
4369 port->pd_capable = false;
4370 port->pps_data.supported = false;
4371 tcpm_set_partner_usb_comm_capable(port, false);
4377 port->rx_msgid = -1;
4378 port->rx_msgid_prime = -1;
4380 port->tcpc->set_pd_rx(port->tcpc, false);
4381 tcpm_init_vbus(port); /* also disables charging */
4382 tcpm_init_vconn(port);
4383 tcpm_set_current_limit(port, 0, 0);
4384 tcpm_set_polarity(port, TYPEC_POLARITY_CC1);
4385 tcpm_mux_set(port, TYPEC_STATE_SAFE, USB_ROLE_NONE,
4387 tcpm_set_attached_state(port, false);
4388 port->try_src_count = 0;
4389 port->try_snk_count = 0;
4390 port->usb_type = POWER_SUPPLY_USB_TYPE_C;
4391 power_supply_changed(port->psy);
4392 port->nr_sink_caps = 0;
4393 port->sink_cap_done = false;
4394 if (port->tcpc->enable_frs)
4395 port->tcpc->enable_frs(port->tcpc, false);
4397 usb_power_delivery_unregister_capabilities(port->partner_sink_caps);
4398 port->partner_sink_caps = NULL;
4399 usb_power_delivery_unregister_capabilities(port->partner_source_caps);
4400 port->partner_source_caps = NULL;
4401 usb_power_delivery_unregister(port->partner_pd);
4402 port->partner_pd = NULL;
4405 static void tcpm_detach(struct tcpm_port *port)
4407 if (tcpm_port_is_disconnected(port))
4408 port->hard_reset_count = 0;
4410 if (!port->attached)
4413 if (port->tcpc->set_bist_data) {
4414 tcpm_log(port, "disable BIST MODE TESTDATA");
4415 port->tcpc->set_bist_data(port->tcpc, false);
4418 tcpm_reset_port(port);
4421 static void tcpm_src_detach(struct tcpm_port *port)
4423 tcpm_detach(port);
4426 static int tcpm_snk_attach(struct tcpm_port *port)
4430 if (port->attached)
4433 ret = tcpm_set_polarity(port, port->cc2 != TYPEC_CC_OPEN ?
4438 tcpm_enable_auto_vbus_discharge(port, true);
4440 ret = tcpm_set_roles(port, true, TYPEC_SINK, tcpm_data_role_for_sink(port));
4444 port->pd_capable = false;
4446 port->partner = NULL;
4448 port->attached = true;
4449 port->send_discover = true;
4450 port->send_discover_prime = false;
4455 static void tcpm_snk_detach(struct tcpm_port *port)
4457 tcpm_detach(port);
4460 static int tcpm_acc_attach(struct tcpm_port *port)
4464 if (port->attached)
4467 ret = tcpm_set_roles(port, true, TYPEC_SOURCE,
4468 tcpm_data_role_for_source(port));
4472 port->partner = NULL;
4474 tcpm_typec_connect(port);
4476 port->attached = true;
4481 static void tcpm_acc_detach(struct tcpm_port *port)
4483 tcpm_detach(port);
4486 static inline enum tcpm_state hard_reset_state(struct tcpm_port *port)
4488 if (port->hard_reset_count < PD_N_HARD_RESET_COUNT)
4490 if (port->pd_capable)
4492 if (port->pwr_role == TYPEC_SOURCE)
4494 if (port->state == SNK_WAIT_CAPABILITIES)
4499 static inline enum tcpm_state unattached_state(struct tcpm_port *port)
4501 if (port->port_type == TYPEC_PORT_DRP) {
4502 if (port->pwr_role == TYPEC_SOURCE)
4506 } else if (port->port_type == TYPEC_PORT_SRC) {
4513 static void tcpm_swap_complete(struct tcpm_port *port, int result)
4515 if (port->swap_pending) {
4516 port->swap_status = result;
4517 port->swap_pending = false;
4518 port->non_pd_role_swap = false;
4519 complete(&port->swap_complete);
4550 static void tcpm_set_initial_svdm_version(struct tcpm_port *port)
4552 switch (port->negotiated_rev) {
4565 typec_partner_set_svdm_version(port->partner, SVDM_VER_1_0);
4568 typec_partner_set_svdm_version(port->partner, SVDM_VER_1_0);
4573 static void run_state_machine(struct tcpm_port *port)
4580 if (port->tcpc->check_contaminant && port->state != CHECK_CONTAMINANT)
4581 port->potential_contaminant = ((port->enter_state == SRC_ATTACH_WAIT &&
4582 port->state == SRC_UNATTACHED) ||
4583 (port->enter_state == SNK_ATTACH_WAIT &&
4584 port->state == SNK_UNATTACHED) ||
4585 (port->enter_state == SNK_DEBOUNCED &&
4586 port->state == SNK_UNATTACHED));
4588 port->enter_state = port->state;
4589 switch (port->state) {
4593 port->tcpc->check_contaminant(port->tcpc);
4597 if (!port->non_pd_role_swap)
4598 tcpm_swap_complete(port, -ENOTCONN);
4599 tcpm_src_detach(port);
4600 if (port->potential_contaminant) {
4601 tcpm_set_state(port, CHECK_CONTAMINANT, 0);
4604 if (tcpm_start_toggling(port, tcpm_rp_cc(port))) {
4605 tcpm_set_state(port, TOGGLING, 0);
4608 tcpm_set_cc(port, tcpm_rp_cc(port));
4609 if (port->port_type == TYPEC_PORT_DRP)
4610 tcpm_set_state(port, SNK_UNATTACHED, PD_T_DRP_SNK);
4613 if (tcpm_port_is_debug(port))
4614 tcpm_set_state(port, DEBUG_ACC_ATTACHED,
4616 else if (tcpm_port_is_audio(port))
4617 tcpm_set_state(port, AUDIO_ACC_ATTACHED,
4619 else if (tcpm_port_is_source(port) && port->vbus_vsafe0v)
4620 tcpm_set_state(port,
4621 tcpm_try_snk(port) ? SNK_TRY
4627 port->try_snk_count++;
4636 tcpm_set_cc(port, TYPEC_CC_RD);
4637 tcpm_set_state(port, SNK_TRY_WAIT, PD_T_DRP_TRY);
4640 if (tcpm_port_is_sink(port)) {
4641 tcpm_set_state(port, SNK_TRY_WAIT_DEBOUNCE, 0);
4643 tcpm_set_state(port, SRC_TRYWAIT, 0);
4644 port->max_wait = 0;
4648 tcpm_set_state(port, SNK_TRY_WAIT_DEBOUNCE_CHECK_VBUS,
4652 if (port->vbus_present && tcpm_port_is_sink(port))
4653 tcpm_set_state(port, SNK_ATTACHED, 0);
4655 port->max_wait = 0;
4658 tcpm_set_cc(port, tcpm_rp_cc(port));
4659 if (port->max_wait == 0) {
4660 port->max_wait = jiffies +
4662 tcpm_set_state(port, SRC_TRYWAIT_UNATTACHED,
4665 if (time_is_after_jiffies(port->max_wait))
4666 tcpm_set_state(port, SRC_TRYWAIT_UNATTACHED,
4667 jiffies_to_msecs(port->max_wait -
4670 tcpm_set_state(port, SNK_UNATTACHED, 0);
4674 tcpm_set_state(port, SRC_ATTACHED, PD_T_CC_DEBOUNCE);
4677 tcpm_set_state(port, SNK_UNATTACHED, 0);
4681 ret = tcpm_src_attach(port);
4682 tcpm_set_state(port, SRC_UNATTACHED,
4686 opmode = tcpm_get_pwr_opmode(tcpm_rp_cc(port));
4687 typec_set_pwr_opmode(port->typec_port, opmode);
4688 port->pwr_opmode = TYPEC_PWR_MODE_USB;
4689 port->caps_count = 0;
4690 port->negotiated_rev = PD_MAX_REV;
4691 port->negotiated_rev_prime = PD_MAX_REV;
4692 port->message_id = 0;
4693 port->message_id_prime = 0;
4694 port->rx_msgid = -1;
4695 port->rx_msgid_prime = -1;
4696 port->explicit_contract = false;
4698 if (port->ams == POWER_ROLE_SWAP ||
4699 port->ams == FAST_ROLE_SWAP)
4700 tcpm_ams_finish(port);
4701 if (!port->pd_supported) {
4702 tcpm_set_state(port, SRC_READY, 0);
4705 port->upcoming_state = SRC_SEND_CAPABILITIES;
4706 tcpm_ams_start(port, POWER_NEGOTIATION);
4709 port->caps_count++;
4710 if (port->caps_count > PD_N_CAPS_COUNT) {
4711 tcpm_set_state(port, SRC_READY, 0);
4714 ret = tcpm_pd_send_source_caps(port);
4716 if (tcpm_can_communicate_sop_prime(port) &&
4717 IS_ERR_OR_NULL(port->cable))
4718 tcpm_set_state(port, SRC_VDM_IDENTITY_REQUEST, 0);
4720 tcpm_set_state(port, SRC_SEND_CAPABILITIES,
4728 /* port->hard_reset_count = 0; */
4729 port->caps_count = 0;
4730 port->pd_capable = true;
4731 tcpm_set_state_cond(port, SRC_SEND_CAPABILITIES_TIMEOUT,
4749 if (port->hard_reset_count < PD_N_HARD_RESET_COUNT) {
4750 tcpm_set_state(port, HARD_RESET_SEND, 0);
4751 } else if (port->negotiated_rev > PD_REV20) {
4752 port->negotiated_rev--;
4753 port->hard_reset_count = 0;
4754 tcpm_set_state(port, SRC_SEND_CAPABILITIES, 0);
4756 tcpm_set_state(port, hard_reset_state(port), 0);
4760 ret = tcpm_pd_check_request(port);
4762 tcpm_pd_send_control(port, PD_CTRL_REJECT, TCPC_TX_SOP);
4763 if (!port->explicit_contract) {
4764 tcpm_set_state(port,
4767 tcpm_set_state(port, SRC_READY, 0);
4770 tcpm_pd_send_control(port, PD_CTRL_ACCEPT, TCPC_TX_SOP);
4771 tcpm_set_partner_usb_comm_capable(port,
4772 !!(port->sink_request & RDO_USB_COMM));
4773 tcpm_set_state(port, SRC_TRANSITION_SUPPLY,
4779 tcpm_pd_send_control(port, PD_CTRL_PS_RDY, TCPC_TX_SOP);
4780 port->explicit_contract = true;
4781 typec_set_pwr_opmode(port->typec_port, TYPEC_PWR_MODE_PD);
4782 port->pwr_opmode = TYPEC_PWR_MODE_PD;
4783 tcpm_set_state_cond(port, SRC_READY, 0);
4787 port->hard_reset_count = 0;
4789 port->try_src_count = 0;
4791 tcpm_swap_complete(port, 0);
4792 tcpm_typec_connect(port);
4794 if (port->ams != NONE_AMS)
4795 tcpm_ams_finish(port);
4796 if (port->next_ams != NONE_AMS) {
4797 port->ams = port->next_ams;
4798 port->next_ams = NONE_AMS;
4805 if (port->upcoming_state != INVALID_STATE) {
4806 upcoming_state = port->upcoming_state;
4807 port->upcoming_state = INVALID_STATE;
4808 tcpm_set_state(port, upcoming_state, 0);
4822 if (port->explicit_contract) {
4823 if (port->send_discover_prime) {
4824 port->tx_sop_type = TCPC_TX_SOP_PRIME;
4826 port->tx_sop_type = TCPC_TX_SOP;
4827 tcpm_set_initial_svdm_version(port);
4829 mod_send_discover_delayed_work(port, 0);
4831 port->send_discover = false;
4832 port->send_discover_prime = false;
4845 * port type-c and the spec does not clearly say whether PD is
4855 if (!port->non_pd_role_swap)
4856 tcpm_swap_complete(port, -ENOTCONN);
4857 tcpm_pps_complete(port, -ENOTCONN);
4858 tcpm_snk_detach(port);
4859 if (port->potential_contaminant) {
4860 tcpm_set_state(port, CHECK_CONTAMINANT, 0);
4863 if (tcpm_start_toggling(port, TYPEC_CC_RD)) {
4864 tcpm_set_state(port, TOGGLING, 0);
4867 tcpm_set_cc(port, TYPEC_CC_RD);
4868 if (port->port_type == TYPEC_PORT_DRP)
4869 tcpm_set_state(port, SRC_UNATTACHED, PD_T_DRP_SRC);
4872 if ((port->cc1 == TYPEC_CC_OPEN &&
4873 port->cc2 != TYPEC_CC_OPEN) ||
4874 (port->cc1 != TYPEC_CC_OPEN &&
4875 port->cc2 == TYPEC_CC_OPEN))
4876 tcpm_set_state(port, SNK_DEBOUNCED,
4878 else if (tcpm_port_is_disconnected(port))
4879 tcpm_set_state(port, SNK_UNATTACHED,
4883 if (tcpm_port_is_disconnected(port))
4884 tcpm_set_state(port, SNK_UNATTACHED,
4886 else if (port->vbus_present)
4887 tcpm_set_state(port,
4888 tcpm_try_src(port) ? SRC_TRY
4893 port->try_src_count++;
4894 tcpm_set_cc(port, tcpm_rp_cc(port));
4895 port->max_wait = 0;
4896 tcpm_set_state(port, SRC_TRY_WAIT, 0);
4899 if (port->max_wait == 0) {
4900 port->max_wait = jiffies +
4904 if (time_is_after_jiffies(port->max_wait))
4905 msecs = jiffies_to_msecs(port->max_wait -
4910 tcpm_set_state(port, SNK_TRYWAIT, msecs);
4913 tcpm_set_state(port, SRC_ATTACHED, PD_T_PD_DEBOUNCE);
4916 tcpm_set_cc(port, TYPEC_CC_RD);
4917 tcpm_set_state(port, SNK_TRYWAIT_VBUS, PD_T_CC_DEBOUNCE);
4925 if (port->vbus_present && tcpm_port_is_sink(port)) {
4926 tcpm_set_state(port, SNK_ATTACHED, 0);
4929 if (!tcpm_port_is_sink(port))
4930 tcpm_set_state(port, SNK_TRYWAIT_DEBOUNCE, 0);
4933 tcpm_set_state(port, SNK_UNATTACHED, PD_T_PD_DEBOUNCE);
4936 ret = tcpm_snk_attach(port);
4938 tcpm_set_state(port, SNK_UNATTACHED, 0);
4940 tcpm_set_state(port, SNK_STARTUP, 0);
4943 opmode = tcpm_get_pwr_opmode(port->polarity ?
4944 port->cc2 : port->cc1);
4945 typec_set_pwr_opmode(port->typec_port, opmode);
4946 port->pwr_opmode = TYPEC_PWR_MODE_USB;
4947 port->negotiated_rev = PD_MAX_REV;
4948 port->negotiated_rev_prime = PD_MAX_REV;
4949 port->message_id = 0;
4950 port->message_id_prime = 0;
4951 port->rx_msgid = -1;
4952 port->rx_msgid_prime = -1;
4953 port->explicit_contract = false;
4955 if (port->ams == POWER_ROLE_SWAP ||
4956 port->ams == FAST_ROLE_SWAP)
4958 tcpm_ams_finish(port);
4960 tcpm_set_state(port, SNK_DISCOVERY, 0);
4963 if (port->vbus_present) {
4964 u32 current_lim = tcpm_get_current_limit(port);
4966 if (port->slow_charger_loop && (current_lim > PD_P_SNK_STDBY_MW / 5))
4968 tcpm_set_current_limit(port, current_lim, 5000);
4970 tcpm_set_charge(port, !port->pd_supported ||
4971 pdo_max_current(port->snk_pdo[0]));
4973 if (!port->pd_supported)
4974 tcpm_set_state(port, SNK_READY, 0);
4976 tcpm_set_state(port, SNK_WAIT_CAPABILITIES, 0);
4984 tcpm_set_state(port, hard_reset_state(port),
4985 port->port_type == TYPEC_PORT_DRP ?
4989 tcpm_set_state(port, SNK_DISCOVERY_DEBOUNCE_DONE,
4993 if (!tcpm_port_is_disconnected(port) &&
4994 tcpm_port_is_sink(port) &&
4995 ktime_after(port->delayed_runtime, ktime_get())) {
4996 tcpm_set_state(port, SNK_DISCOVERY,
4997 ktime_to_ms(ktime_sub(port->delayed_runtime, ktime_get())));
5000 tcpm_set_state(port, unattached_state(port), 0);
5003 ret = port->tcpc->set_pd_rx(port->tcpc, true);
5005 tcpm_set_state(port, SNK_READY, 0);
5014 if (port->vbus_never_low) {
5015 port->vbus_never_low = false;
5016 tcpm_set_state(port, SNK_SOFT_RESET,
5019 tcpm_set_state(port, hard_reset_state(port),
5024 port->pd_capable = true;
5025 tcpm_set_partner_usb_comm_capable(port,
5026 !!(port->source_caps[0] & PDO_FIXED_USB_COMM));
5027 port->hard_reset_count = 0;
5028 ret = tcpm_pd_send_request(port);
5031 tcpm_set_auto_vbus_discharge_threshold(port, TYPEC_PWR_MODE_PD,
5032 port->pps_data.active,
5033 port->supply_voltage);
5035 tcpm_set_state(port, SNK_WAIT_CAPABILITIES, 0);
5037 tcpm_set_state_cond(port, hard_reset_state(port),
5042 ret = tcpm_pd_send_pps_request(port);
5045 tcpm_set_auto_vbus_discharge_threshold(port, TYPEC_PWR_MODE_PD,
5046 port->pps_data.active,
5047 port->supply_voltage);
5048 port->pps_status = ret;
5054 if (port->update_sink_caps)
5055 tcpm_set_state(port, SNK_NEGOTIATE_CAPABILITIES, 0);
5057 tcpm_set_state(port, SNK_READY, 0);
5059 tcpm_set_state_cond(port, hard_reset_state(port),
5069 * This is not applicable to PPS though as the port can continue
5072 if (port->supply_voltage != port->req_supply_voltage && !port->pps_data.active &&
5073 port->current_limit * port->supply_voltage / 1000 > PD_P_SNK_STDBY_MW) {
5074 u32 stdby_ma = PD_P_SNK_STDBY_MW * 1000 / port->supply_voltage;
5076 tcpm_log(port, "Setting standby current %u mV @ %u mA",
5077 port->supply_voltage, stdby_ma);
5078 tcpm_set_current_limit(port, stdby_ma, port->supply_voltage);
5082 tcpm_set_state(port, hard_reset_state(port),
5086 port->try_snk_count = 0;
5087 port->update_sink_caps = false;
5088 if (port->explicit_contract) {
5089 typec_set_pwr_opmode(port->typec_port,
5091 port->pwr_opmode = TYPEC_PWR_MODE_PD;
5094 if (!port->pd_capable && port->slow_charger_loop)
5095 tcpm_set_current_limit(port, tcpm_get_current_limit(port), 5000);
5096 tcpm_swap_complete(port, 0);
5097 tcpm_typec_connect(port);
5098 if (port->pd_capable && port->source_caps[0] & PDO_FIXED_DUAL_ROLE)
5099 mod_enable_frs_delayed_work(port, 0);
5100 tcpm_pps_complete(port, port->pps_status);
5102 if (port->ams != NONE_AMS)
5103 tcpm_ams_finish(port);
5104 if (port->next_ams != NONE_AMS) {
5105 port->ams = port->next_ams;
5106 port->next_ams = NONE_AMS;
5113 if (port->upcoming_state != INVALID_STATE) {
5114 upcoming_state = port->upcoming_state;
5115 port->upcoming_state = INVALID_STATE;
5116 tcpm_set_state(port, upcoming_state, 0);
5130 if (port->explicit_contract) {
5131 if (port->send_discover_prime) {
5132 port->tx_sop_type = TCPC_TX_SOP_PRIME;
5134 port->tx_sop_type = TCPC_TX_SOP;
5135 tcpm_set_initial_svdm_version(port);
5137 mod_send_discover_delayed_work(port, 0);
5139 port->send_discover = false;
5140 port->send_discover_prime = false;
5143 power_supply_changed(port->psy);
5148 tcpm_acc_detach(port);
5149 tcpm_set_state(port, SRC_UNATTACHED, 0);
5153 ret = tcpm_acc_attach(port);
5155 tcpm_set_state(port, ACC_UNATTACHED, 0);
5158 tcpm_set_state(port, ACC_UNATTACHED, PD_T_CC_DEBOUNCE);
5163 if (port->ams != NONE_AMS)
5164 tcpm_ams_finish(port);
5169 port->upcoming_state = INVALID_STATE;
5170 tcpm_ams_start(port, HARD_RESET);
5173 port->sink_cap_done = false;
5174 if (port->tcpc->enable_frs)
5175 port->tcpc->enable_frs(port->tcpc, false);
5176 port->hard_reset_count++;
5177 port->tcpc->set_pd_rx(port->tcpc, false);
5178 tcpm_unregister_altmodes(port);
5179 port->nr_sink_caps = 0;
5180 port->send_discover = true;
5181 port->send_discover_prime = false;
5182 if (port->pwr_role == TYPEC_SOURCE)
5183 tcpm_set_state(port, SRC_HARD_RESET_VBUS_OFF,
5186 tcpm_set_state(port, SNK_HARD_RESET_SINK_OFF, 0);
5195 tcpm_set_vconn(port, false);
5196 tcpm_set_vbus(port, false);
5197 tcpm_set_roles(port, port->self_powered, TYPEC_SOURCE,
5198 tcpm_data_role_for_source(port));
5210 tcpm_set_state(port, SRC_HARD_RESET_VBUS_ON, PD_T_SAFE_0V + PD_T_SRC_RECOVER);
5213 tcpm_set_vconn(port, true);
5214 tcpm_set_vbus(port, true);
5215 if (port->ams == HARD_RESET)
5216 tcpm_ams_finish(port);
5217 if (port->pd_supported)
5218 port->tcpc->set_pd_rx(port->tcpc, true);
5219 tcpm_set_attached_state(port, true);
5220 tcpm_set_state(port, SRC_UNATTACHED, PD_T_PS_SOURCE_ON);
5224 tcpm_set_auto_vbus_discharge_threshold(port, TYPEC_PWR_MODE_USB, false, 0);
5225 memset(&port->pps_data, 0, sizeof(port->pps_data));
5226 tcpm_set_vconn(port, false);
5227 if (port->pd_capable)
5228 tcpm_set_charge(port, false);
5229 tcpm_set_roles(port, port->self_powered, TYPEC_SINK,
5230 tcpm_data_role_for_sink(port));
5236 tcpm_set_state(port, SNK_HARD_RESET_SINK_ON, PD_T_SAFE_0V);
5239 if (port->ams == HARD_RESET)
5240 tcpm_ams_finish(port);
5242 tcpm_set_state(port, SNK_UNATTACHED,
5262 if (port->pd_capable) {
5263 tcpm_set_current_limit(port,
5264 tcpm_get_current_limit(port),
5267 tcpm_set_charge(port, !!pdo_max_current(port->snk_pdo[0]));
5269 if (port->ams == HARD_RESET)
5270 tcpm_ams_finish(port);
5271 tcpm_set_attached_state(port, true);
5272 tcpm_set_auto_vbus_discharge_threshold(port, TYPEC_PWR_MODE_USB, false, VSAFE5V);
5273 tcpm_set_state(port, SNK_STARTUP, 0);
5278 port->message_id = 0;
5279 port->rx_msgid = -1;
5281 usb_power_delivery_unregister_capabilities(port->partner_source_caps);
5282 port->partner_source_caps = NULL;
5283 tcpm_pd_send_control(port, PD_CTRL_ACCEPT, TCPC_TX_SOP);
5284 tcpm_ams_finish(port);
5285 if (port->pwr_role == TYPEC_SOURCE) {
5286 port->upcoming_state = SRC_SEND_CAPABILITIES;
5287 tcpm_ams_start(port, POWER_NEGOTIATION);
5289 tcpm_set_state(port, SNK_WAIT_CAPABILITIES, 0);
5294 if (port->ams != NONE_AMS)
5295 tcpm_ams_finish(port);
5296 port->upcoming_state = SOFT_RESET_SEND;
5297 tcpm_ams_start(port, SOFT_RESET_AMS);
5306 if (port->tx_sop_type == TCPC_TX_SOP_PRIME) {
5307 port->message_id_prime = 0;
5308 port->rx_msgid_prime = -1;
5309 tcpm_pd_send_control(port, PD_CTRL_SOFT_RESET, TCPC_TX_SOP_PRIME);
5310 tcpm_set_state_cond(port, ready_state(port), PD_T_SENDER_RESPONSE);
5312 port->message_id = 0;
5313 port->rx_msgid = -1;
5315 usb_power_delivery_unregister_capabilities(port->partner_source_caps);
5316 port->partner_source_caps = NULL;
5317 if (tcpm_pd_send_control(port, PD_CTRL_SOFT_RESET, TCPC_TX_SOP))
5318 tcpm_set_state_cond(port, hard_reset_state(port), 0);
5320 tcpm_set_state_cond(port, hard_reset_state(port),
5327 tcpm_pd_send_control(port, PD_CTRL_DR_SWAP, TCPC_TX_SOP);
5328 if (port->data_role == TYPEC_DEVICE || port->negotiated_rev > PD_REV20) {
5329 port->send_discover = true;
5330 port->send_discover_prime = false;
5332 tcpm_set_state_cond(port, DR_SWAP_SEND_TIMEOUT,
5336 tcpm_pd_send_control(port, PD_CTRL_ACCEPT, TCPC_TX_SOP);
5337 if (port->data_role == TYPEC_DEVICE || port->negotiated_rev > PD_REV20) {
5338 port->send_discover = true;
5339 port->send_discover_prime = false;
5341 tcpm_set_state_cond(port, DR_SWAP_CHANGE_DR, 0);
5344 tcpm_swap_complete(port, -ETIMEDOUT);
5345 port->send_discover = false;
5346 port->send_discover_prime = false;
5347 tcpm_ams_finish(port);
5348 tcpm_set_state(port, ready_state(port), 0);
5351 tcpm_unregister_altmodes(port);
5352 if (port->data_role == TYPEC_HOST)
5353 tcpm_set_roles(port, true, port->pwr_role,
5356 tcpm_set_roles(port, true, port->pwr_role,
5358 tcpm_ams_finish(port);
5359 tcpm_set_state(port, ready_state(port), 0);
5363 if (tcpm_pd_send_control(port, PD_CTRL_FR_SWAP, TCPC_TX_SOP)) {
5364 tcpm_set_state(port, ERROR_RECOVERY, 0);
5367 tcpm_set_state_cond(port, FR_SWAP_SEND_TIMEOUT, PD_T_SENDER_RESPONSE);
5370 tcpm_set_state(port, ERROR_RECOVERY, 0);
5373 tcpm_set_state(port, ERROR_RECOVERY, PD_T_PS_SOURCE_OFF);
5376 if (port->vbus_source)
5377 tcpm_set_state(port, FR_SWAP_SNK_SRC_SOURCE_VBUS_APPLIED, 0);
5379 tcpm_set_state(port, ERROR_RECOVERY, PD_T_RECEIVER_RESPONSE);
5382 tcpm_set_pwr_role(port, TYPEC_SOURCE);
5383 if (tcpm_pd_send_control(port, PD_CTRL_PS_RDY, TCPC_TX_SOP)) {
5384 tcpm_set_state(port, ERROR_RECOVERY, 0);
5387 tcpm_set_cc(port, tcpm_rp_cc(port));
5388 tcpm_set_state(port, SRC_STARTUP, PD_T_SWAP_SRC_START);
5393 tcpm_pd_send_control(port, PD_CTRL_ACCEPT, TCPC_TX_SOP);
5394 tcpm_set_state(port, PR_SWAP_START, 0);
5397 tcpm_pd_send_control(port, PD_CTRL_PR_SWAP, TCPC_TX_SOP);
5398 tcpm_set_state_cond(port, PR_SWAP_SEND_TIMEOUT,
5402 tcpm_swap_complete(port, -ETIMEDOUT);
5403 tcpm_set_state(port, ready_state(port), 0);
5406 tcpm_apply_rc(port);
5407 if (port->pwr_role == TYPEC_SOURCE)
5408 tcpm_set_state(port, PR_SWAP_SRC_SNK_TRANSITION_OFF,
5411 tcpm_set_state(port, PR_SWAP_SNK_SRC_SINK_OFF, 0);
5418 tcpm_set_vbus(port, false);
5419 port->explicit_contract = false;
5421 tcpm_set_state(port, PR_SWAP_SRC_SNK_SOURCE_OFF,
5425 tcpm_set_cc(port, TYPEC_CC_RD);
5427 tcpm_set_state(port, PR_SWAP_SRC_SNK_SOURCE_OFF_CC_DEBOUNCED,
5438 tcpm_set_pwr_role(port, TYPEC_SINK);
5439 if (tcpm_pd_send_control(port, PD_CTRL_PS_RDY, TCPC_TX_SOP)) {
5440 tcpm_set_state(port, ERROR_RECOVERY, 0);
5443 tcpm_set_state(port, ERROR_RECOVERY, PD_T_PS_SOURCE_ON_PRS);
5446 tcpm_enable_auto_vbus_discharge(port, true);
5448 tcpm_set_auto_vbus_discharge_threshold(port, TYPEC_PWR_MODE_USB, false, VSAFE5V);
5449 tcpm_set_state(port, SNK_STARTUP, 0);
5453 usb_power_delivery_unregister_capabilities(port->partner_source_caps);
5454 port->partner_source_caps = NULL;
5459 tcpm_set_auto_vbus_discharge_threshold(port, TYPEC_PWR_MODE_USB,
5460 port->pps_data.active, 0);
5461 tcpm_set_charge(port, false);
5462 tcpm_set_state(port, hard_reset_state(port),
5466 tcpm_enable_auto_vbus_discharge(port, true);
5467 tcpm_set_cc(port, tcpm_rp_cc(port));
5468 tcpm_set_vbus(port, true);
5474 tcpm_set_state(port, PR_SWAP_SNK_SRC_SOURCE_ON_VBUS_RAMPED_UP,
5485 tcpm_set_pwr_role(port, TYPEC_SOURCE);
5486 tcpm_pd_send_control(port, PD_CTRL_PS_RDY, TCPC_TX_SOP);
5487 tcpm_set_state(port, SRC_STARTUP, PD_T_SWAP_SRC_START);
5491 tcpm_pd_send_control(port, PD_CTRL_ACCEPT, TCPC_TX_SOP);
5492 tcpm_ams_finish(port);
5493 tcpm_set_state(port, VCONN_SWAP_START, 0);
5496 tcpm_pd_send_control(port, PD_CTRL_VCONN_SWAP, TCPC_TX_SOP);
5497 tcpm_set_state(port, VCONN_SWAP_SEND_TIMEOUT,
5501 tcpm_swap_complete(port, -ETIMEDOUT);
5502 tcpm_set_state(port, ready_state(port), 0);
5505 if (port->vconn_role == TYPEC_SOURCE)
5506 tcpm_set_state(port, VCONN_SWAP_WAIT_FOR_VCONN, 0);
5508 tcpm_set_state(port, VCONN_SWAP_TURN_ON_VCONN, 0);
5511 tcpm_set_state(port, hard_reset_state(port),
5515 ret = tcpm_set_vconn(port, true);
5516 tcpm_pd_send_control(port, PD_CTRL_PS_RDY, TCPC_TX_SOP);
5524 tcpm_set_state(port, VCONN_SWAP_SEND_SOFT_RESET,
5527 tcpm_set_state(port, ready_state(port), 0);
5530 tcpm_set_vconn(port, false);
5531 tcpm_set_state(port, ready_state(port), 0);
5534 tcpm_swap_complete(port, port->swap_status);
5535 if (tcpm_can_communicate_sop_prime(port)) {
5536 port->tx_sop_type = TCPC_TX_SOP_PRIME;
5537 port->upcoming_state = SOFT_RESET_SEND;
5538 tcpm_ams_start(port, SOFT_RESET_AMS);
5540 tcpm_set_state(port, ready_state(port), 0);
5547 tcpm_swap_complete(port, port->swap_status);
5548 if (port->pwr_role == TYPEC_SOURCE)
5549 tcpm_set_state(port, SRC_READY, 0);
5551 tcpm_set_state(port, SNK_READY, 0);
5554 if (port->pwr_role == TYPEC_SOURCE)
5555 tcpm_set_state(port, SRC_READY, 0);
5557 tcpm_set_state(port, SNK_READY, 0);
5561 switch (BDO_MODE_MASK(port->bist_request)) {
5563 tcpm_pd_transmit(port, TCPC_TX_BIST_MODE_2, NULL);
5564 tcpm_set_state(port, unattached_state(port),
5568 if (port->tcpc->set_bist_data) {
5569 tcpm_log(port, "Enable BIST MODE TESTDATA");
5570 port->tcpc->set_bist_data(port->tcpc, true);
5578 tcpm_pd_send_control(port, PD_CTRL_GET_STATUS, TCPC_TX_SOP);
5579 tcpm_set_state(port, GET_STATUS_SEND_TIMEOUT,
5583 tcpm_set_state(port, ready_state(port), 0);
5586 tcpm_pd_send_control(port, PD_CTRL_GET_PPS_STATUS, TCPC_TX_SOP);
5587 tcpm_set_state(port, GET_PPS_STATUS_SEND_TIMEOUT,
5591 tcpm_set_state(port, ready_state(port), 0);
5594 tcpm_pd_send_control(port, PD_CTRL_GET_SINK_CAP, TCPC_TX_SOP);
5595 tcpm_set_state(port, GET_SINK_CAP_TIMEOUT, PD_T_SENDER_RESPONSE);
5598 port->sink_cap_done = true;
5599 tcpm_set_state(port, ready_state(port), 0);
5602 tcpm_swap_complete(port, -EPROTO);
5603 tcpm_pps_complete(port, -EPROTO);
5604 tcpm_set_state(port, PORT_RESET, 0);
5607 tcpm_reset_port(port);
5608 if (port->self_powered)
5609 tcpm_set_cc(port, TYPEC_CC_OPEN);
5611 tcpm_set_cc(port, tcpm_default_state(port) == SNK_UNATTACHED ?
5612 TYPEC_CC_RD : tcpm_rp_cc(port));
5613 tcpm_set_state(port, PORT_RESET_WAIT_OFF,
5617 tcpm_set_state(port,
5618 tcpm_default_state(port),
5619 port->vbus_present ? PD_T_PS_SOURCE_OFF : 0);
5624 if (port->upcoming_state == INVALID_STATE) {
5625 tcpm_set_state(port, port->pwr_role == TYPEC_SOURCE ?
5630 upcoming_state = port->upcoming_state;
5631 port->upcoming_state = INVALID_STATE;
5632 tcpm_set_state(port, upcoming_state, 0);
5637 tcpm_pd_send_control(port, PD_CTRL_NOT_SUPP, TCPC_TX_SOP);
5638 tcpm_set_state(port, port->pwr_role == TYPEC_SOURCE ? SRC_READY : SNK_READY, 0);
5643 port->send_discover_prime = true;
5644 port->tx_sop_type = TCPC_TX_SOP_PRIME;
5645 mod_send_discover_delayed_work(port, 0);
5646 port->upcoming_state = SRC_SEND_CAPABILITIES;
5650 WARN(1, "Unexpected port state %d\n", port->state);
5657 struct tcpm_port *port = container_of(work, struct tcpm_port, state_machine);
5660 mutex_lock(&port->lock);
5661 port->state_machine_running = true;
5663 if (port->queued_message && tcpm_send_queued_message(port))
5667 if (port->delayed_state) {
5668 tcpm_log(port, "state change %s -> %s [delayed %ld ms]",
5669 tcpm_states[port->state],
5670 tcpm_states[port->delayed_state], port->delay_ms);
5671 port->prev_state = port->state;
5672 port->state = port->delayed_state;
5673 port->delayed_state = INVALID_STATE;
5681 prev_state = port->state;
5682 run_state_machine(port);
5683 if (port->queued_message)
5684 tcpm_send_queued_message(port);
5685 } while (port->state != prev_state && !port->delayed_state);
5688 port->state_machine_running = false;
5689 mutex_unlock(&port->lock);
5692 static void _tcpm_cc_change(struct tcpm_port *port, enum typec_cc_status cc1,
5698 old_cc1 = port->cc1;
5699 old_cc2 = port->cc2;
5700 port->cc1 = cc1;
5701 port->cc2 = cc2;
5703 tcpm_log_force(port,
5705 old_cc1, cc1, old_cc2, cc2, tcpm_states[port->state],
5706 port->polarity,
5707 tcpm_port_is_disconnected(port) ? "disconnected"
5710 switch (port->state) {
5712 if (tcpm_port_is_debug(port) || tcpm_port_is_audio(port) ||
5713 tcpm_port_is_source(port))
5714 tcpm_set_state(port, SRC_ATTACH_WAIT, 0);
5715 else if (tcpm_port_is_sink(port))
5716 tcpm_set_state(port, SNK_ATTACH_WAIT, 0);
5723 if (tcpm_port_is_debug(port) || tcpm_port_is_audio(port) ||
5724 tcpm_port_is_source(port))
5725 tcpm_set_state(port, SRC_ATTACH_WAIT, 0);
5728 if (tcpm_port_is_disconnected(port) ||
5729 tcpm_port_is_audio_detached(port))
5730 tcpm_set_state(port, SRC_UNATTACHED, 0);
5732 tcpm_set_state(port, SRC_ATTACH_WAIT, 0);
5738 if (tcpm_port_is_disconnected(port) ||
5739 !tcpm_port_is_source(port)) {
5740 if (port->port_type == TYPEC_PORT_SRC)
5741 tcpm_set_state(port, SRC_UNATTACHED, tcpm_wait_for_discharge(port));
5743 tcpm_set_state(port, SNK_UNATTACHED, tcpm_wait_for_discharge(port));
5747 if (tcpm_port_is_sink(port))
5748 tcpm_set_state(port, SNK_ATTACH_WAIT, 0);
5751 if ((port->cc1 == TYPEC_CC_OPEN &&
5752 port->cc2 != TYPEC_CC_OPEN) ||
5753 (port->cc1 != TYPEC_CC_OPEN &&
5754 port->cc2 == TYPEC_CC_OPEN))
5756 else if (tcpm_port_is_disconnected(port))
5760 if (new_state != port->delayed_state)
5761 tcpm_set_state(port, SNK_ATTACH_WAIT, 0);
5764 if (tcpm_port_is_disconnected(port))
5766 else if (port->vbus_present)
5767 new_state = tcpm_try_src(port) ? SRC_TRY : SNK_ATTACHED;
5770 if (new_state != port->delayed_state)
5771 tcpm_set_state(port, SNK_DEBOUNCED, 0);
5776 * "A port that has entered into USB PD communications with the Source and
5780 * A port that is monitoring the CC voltage for disconnect (but is not in
5790 if (!port->auto_vbus_discharge_enabled && tcpm_port_is_disconnected(port))
5791 tcpm_set_state(port, unattached_state(port), 0);
5792 else if (!port->pd_capable &&
5794 tcpm_set_current_limit(port,
5795 tcpm_get_current_limit(port),
5801 tcpm_set_state(port, AUDIO_ACC_DEBOUNCE, 0);
5804 if (tcpm_port_is_audio(port))
5805 tcpm_set_state(port, AUDIO_ACC_ATTACHED, 0);
5810 tcpm_set_state(port, ACC_UNATTACHED, 0);
5819 if (tcpm_port_is_disconnected(port))
5820 tcpm_set_state(port, SNK_DISCOVERY_DEBOUNCE, 0);
5827 if (!port->vbus_present && tcpm_port_is_source(port))
5828 tcpm_set_state(port, SRC_TRYWAIT_DEBOUNCE, 0);
5831 if (port->vbus_present || !tcpm_port_is_source(port))
5832 tcpm_set_state(port, SRC_TRYWAIT, 0);
5835 if (!tcpm_port_is_sink(port)) {
5836 port->max_wait = 0;
5837 tcpm_set_state(port, SRC_TRYWAIT, 0);
5841 if (tcpm_port_is_source(port))
5842 tcpm_set_state(port, SRC_TRY_DEBOUNCE, 0);
5845 tcpm_set_state(port, SRC_TRY_WAIT, 0);
5848 if (tcpm_port_is_sink(port))
5849 tcpm_set_state(port, SNK_TRYWAIT_VBUS, 0);
5852 if (!tcpm_port_is_sink(port))
5853 tcpm_set_state(port, SNK_TRYWAIT_DEBOUNCE, 0);
5856 if (!tcpm_port_is_sink(port))
5857 tcpm_set_state(port, SRC_TRYWAIT, PD_T_TRY_CC_DEBOUNCE);
5859 tcpm_set_state(port, SNK_TRY_WAIT_DEBOUNCE_CHECK_VBUS, 0);
5894 if (tcpm_port_is_disconnected(port) && !(port->pwr_role == TYPEC_SINK &&
5895 port->auto_vbus_discharge_enabled))
5896 tcpm_set_state(port, unattached_state(port), 0);
5901 static void _tcpm_pd_vbus_on(struct tcpm_port *port)
5903 tcpm_log_force(port, "VBUS on");
5904 port->vbus_present = true;
5909 port->vbus_vsafe0v = false;
5911 switch (port->state) {
5913 port->explicit_contract = true;
5914 tcpm_set_state(port, SNK_READY, 0);
5917 tcpm_set_state(port, SNK_DISCOVERY, 0);
5921 tcpm_set_state(port, tcpm_try_src(port) ? SRC_TRY
5926 tcpm_set_state(port, SNK_HARD_RESET_SINK_ON, 0);
5929 tcpm_set_state(port, SRC_STARTUP, 0);
5932 tcpm_set_state(port, SRC_STARTUP, 0);
5942 tcpm_set_state(port, SRC_TRYWAIT, 0);
5951 if (tcpm_port_is_sink(port))
5952 tcpm_set_state(port, SNK_ATTACHED, 0);
5958 if (port->vbus_present && tcpm_port_is_sink(port))
5959 tcpm_set_state(port, SNK_ATTACHED, 0);
5969 if (port->tcpc->frs_sourcing_vbus)
5970 port->tcpc->frs_sourcing_vbus(port->tcpc);
5973 if (port->tcpc->frs_sourcing_vbus)
5974 port->tcpc->frs_sourcing_vbus(port->tcpc);
5975 tcpm_set_state(port, FR_SWAP_SNK_SRC_SOURCE_VBUS_APPLIED, 0);
5991 static void _tcpm_pd_vbus_off(struct tcpm_port *port)
5993 tcpm_log_force(port, "VBUS off");
5994 port->vbus_present = false;
5995 port->vbus_never_low = false;
5996 switch (port->state) {
5998 tcpm_set_state(port, SNK_HARD_RESET_WAIT_VBUS, 0);
6007 if (tcpm_port_is_source(port))
6008 tcpm_set_state(port, SRC_TRYWAIT_DEBOUNCE, 0);
6026 tcpm_set_state(port, PR_SWAP_SRC_SNK_SOURCE_OFF, 0);
6042 tcpm_set_state(port, tcpm_default_state(port), 0);
6059 * DRP port should move to Unattached.SNK instead of Unattached.SRC if
6063 if (port->port_type == TYPEC_PORT_SRC)
6064 tcpm_set_state(port, SRC_UNATTACHED, tcpm_wait_for_discharge(port));
6066 tcpm_set_state(port, SNK_UNATTACHED, tcpm_wait_for_discharge(port));
6089 if (port->pwr_role == TYPEC_SINK && port->attached)
6090 tcpm_set_state(port, SNK_UNATTACHED, tcpm_wait_for_discharge(port));
6095 static void _tcpm_pd_vbus_vsafe0v(struct tcpm_port *port)
6097 tcpm_log_force(port, "VBUS VSAFE0V");
6098 port->vbus_vsafe0v = true;
6099 switch (port->state) {
6105 tcpm_set_state(port, SRC_HARD_RESET_VBUS_ON, PD_T_SRC_RECOVER);
6108 if (tcpm_port_is_source(port))
6109 tcpm_set_state(port, tcpm_try_snk(port) ? SNK_TRY : SRC_ATTACHED,
6119 if (port->auto_vbus_discharge_enabled) {
6120 if (port->port_type == TYPEC_PORT_SRC)
6121 tcpm_set_state(port, SRC_UNATTACHED, 0);
6123 tcpm_set_state(port, SNK_UNATTACHED, 0);
6138 if (port->pwr_role == TYPEC_SINK && port->auto_vbus_discharge_enabled)
6139 tcpm_set_state(port, SNK_UNATTACHED, 0);
6144 static void _tcpm_pd_hard_reset(struct tcpm_port *port)
6146 tcpm_log_force(port, "Received hard reset");
6147 if (port->bist_request == BDO_MODE_TESTDATA && port->tcpc->set_bist_data)
6148 port->tcpc->set_bist_data(port->tcpc, false);
6150 switch (port->state) {
6159 if (port->ams != NONE_AMS)
6160 port->ams = NONE_AMS;
6161 if (port->hard_reset_count < PD_N_HARD_RESET_COUNT)
6162 port->ams = HARD_RESET;
6167 tcpm_set_state(port,
6168 port->hard_reset_count < PD_N_HARD_RESET_COUNT ?
6175 struct tcpm_port *port = container_of(work, struct tcpm_port,
6179 mutex_lock(&port->lock);
6181 spin_lock(&port->pd_event_lock);
6182 while (port->pd_events) {
6183 events = port->pd_events;
6184 port->pd_events = 0;
6185 spin_unlock(&port->pd_event_lock);
6187 _tcpm_pd_hard_reset(port);
6191 vbus = port->tcpc->get_vbus(port->tcpc);
6193 _tcpm_pd_vbus_on(port);
6195 _tcpm_pd_vbus_off(port);
6201 if (!port->tcpc->is_vbus_vsafe0v ||
6202 port->tcpc->is_vbus_vsafe0v(port->tcpc))
6203 _tcpm_pd_vbus_vsafe0v(port);
6209 if (port->tcpc->get_cc(port->tcpc, &cc1, &cc2) == 0)
6210 _tcpm_cc_change(port, cc1, cc2);
6213 if (port->state == SNK_READY) {
6216 port->upcoming_state = FR_SWAP_SEND;
6217 ret = tcpm_ams_start(port, FAST_ROLE_SWAP);
6219 port->upcoming_state = INVALID_STATE;
6221 tcpm_log(port, "Discarding FRS_SIGNAL! Not in sink ready");
6225 tcpm_log(port, "sourcing vbus");
6233 port->vbus_source = true;
6234 _tcpm_pd_vbus_on(port);
6237 tcpm_log(port, "port clean");
6238 if (port->state == CHECK_CONTAMINANT) {
6239 if (tcpm_start_toggling(port, tcpm_rp_cc(port)))
6240 tcpm_set_state(port, TOGGLING, 0);
6242 tcpm_set_state(port, tcpm_default_state(port), 0);
6246 tcpm_log(port, "port triggering error recovery");
6247 tcpm_set_state(port, ERROR_RECOVERY, 0);
6250 spin_lock(&port->pd_event_lock);
6252 spin_unlock(&port->pd_event_lock);
6253 mutex_unlock(&port->lock);
6256 void tcpm_cc_change(struct tcpm_port *port)
6258 spin_lock(&port->pd_event_lock);
6259 port->pd_events |= TCPM_CC_EVENT;
6260 spin_unlock(&port->pd_event_lock);
6261 kthread_queue_work(port->wq, &port->event_work);
6265 void tcpm_vbus_change(struct tcpm_port *port)
6267 spin_lock(&port->pd_event_lock);
6268 port->pd_events |= TCPM_VBUS_EVENT;
6269 spin_unlock(&port->pd_event_lock);
6270 kthread_queue_work(port->wq, &port->event_work);
6274 void tcpm_pd_hard_reset(struct tcpm_port *port)
6276 spin_lock(&port->pd_event_lock);
6277 port->pd_events = TCPM_RESET_EVENT;
6278 spin_unlock(&port->pd_event_lock);
6279 kthread_queue_work(port->wq, &port->event_work);
6283 void tcpm_sink_frs(struct tcpm_port *port)
6285 spin_lock(&port->pd_event_lock);
6286 port->pd_events |= TCPM_FRS_EVENT;
6287 spin_unlock(&port->pd_event_lock);
6288 kthread_queue_work(port->wq, &port->event_work);
6292 void tcpm_sourcing_vbus(struct tcpm_port *port)
6294 spin_lock(&port->pd_event_lock);
6295 port->pd_events |= TCPM_SOURCING_VBUS;
6296 spin_unlock(&port->pd_event_lock);
6297 kthread_queue_work(port->wq, &port->event_work);
6301 void tcpm_port_clean(struct tcpm_port *port)
6303 spin_lock(&port->pd_event_lock);
6304 port->pd_events |= TCPM_PORT_CLEAN;
6305 spin_unlock(&port->pd_event_lock);
6306 kthread_queue_work(port->wq, &port->event_work);
6310 bool tcpm_port_is_toggling(struct tcpm_port *port)
6312 return port->port_type == TYPEC_PORT_DRP && port->state == TOGGLING;
6316 void tcpm_port_error_recovery(struct tcpm_port *port)
6318 spin_lock(&port->pd_event_lock);
6319 port->pd_events |= TCPM_PORT_ERROR;
6320 spin_unlock(&port->pd_event_lock);
6321 kthread_queue_work(port->wq, &port->event_work);
6327 struct tcpm_port *port = container_of(work, struct tcpm_port, enable_frs);
6330 mutex_lock(&port->lock);
6332 if (!port->connected || port->port_type != TYPEC_PORT_DRP ||
6333 port->pwr_opmode != TYPEC_PWR_MODE_PD ||
6334 !port->tcpc->enable_frs ||
6336 port->sink_cap_done || port->negotiated_rev < PD_REV30)
6340 if (port->state != SNK_READY || port->vdm_sm_running || port->send_discover ||
6341 port->send_discover_prime)
6344 port->upcoming_state = GET_SINK_CAP;
6345 ret = tcpm_ams_start(port, GET_SINK_CAPABILITIES);
6347 port->upcoming_state = INVALID_STATE;
6349 port->sink_cap_done = true;
6353 mod_enable_frs_delayed_work(port, GET_SINK_CAP_RETRY_MS);
6355 mutex_unlock(&port->lock);
6360 struct tcpm_port *port = container_of(work, struct tcpm_port, send_discover_work);
6362 mutex_lock(&port->lock);
6364 if (!port->send_discover && !port->send_discover_prime)
6367 if (port->data_role == TYPEC_DEVICE && port->negotiated_rev < PD_REV30) {
6368 port->send_discover = false;
6369 port->send_discover_prime = false;
6373 /* Retry if the port is not idle */
6374 if ((port->state != SRC_READY && port->state != SNK_READY &&
6375 port->state != SRC_VDM_IDENTITY_REQUEST) || port->vdm_sm_running) {
6376 mod_send_discover_delayed_work(port, SEND_DISCOVER_RETRY_MS);
6380 tcpm_send_vdm(port, USB_SID_PD, CMD_DISCOVER_IDENT, NULL, 0, port->tx_sop_type);
6383 mutex_unlock(&port->lock);
6388 struct tcpm_port *port = typec_get_drvdata(p);
6391 mutex_lock(&port->swap_lock);
6392 mutex_lock(&port->lock);
6394 if (port->typec_caps.data != TYPEC_PORT_DRD) {
6398 if (port->state != SRC_READY && port->state != SNK_READY) {
6403 if (port->data_role == data) {
6411 * alternate modes shall trigger a port reset.
6415 if (!port->pd_capable) {
6417 * If the partner is not PD capable, reset the port to
6421 if (port->try_role == TYPEC_NO_PREFERRED_ROLE ||
6422 port->try_role == port->pwr_role) {
6426 port->non_pd_role_swap = true;
6427 tcpm_set_state(port, PORT_RESET, 0);
6429 port->upcoming_state = DR_SWAP_SEND;
6430 ret = tcpm_ams_start(port, DATA_ROLE_SWAP);
6432 port->upcoming_state = INVALID_STATE;
6437 port->swap_status = 0;
6438 port->swap_pending = true;
6439 reinit_completion(&port->swap_complete);
6440 mutex_unlock(&port->lock);
6442 if (!wait_for_completion_timeout(&port->swap_complete,
6446 ret = port->swap_status;
6448 port->non_pd_role_swap = false;
6452 mutex_unlock(&port->lock);
6454 mutex_unlock(&port->swap_lock);
6460 struct tcpm_port *port = typec_get_drvdata(p);
6463 mutex_lock(&port->swap_lock);
6464 mutex_lock(&port->lock);
6466 if (port->port_type != TYPEC_PORT_DRP) {
6470 if (port->state != SRC_READY && port->state != SNK_READY) {
6475 if (role == port->pwr_role) {
6480 port->upcoming_state = PR_SWAP_SEND;
6481 ret = tcpm_ams_start(port, POWER_ROLE_SWAP);
6483 port->upcoming_state = INVALID_STATE;
6487 port->swap_status = 0;
6488 port->swap_pending = true;
6489 reinit_completion(&port->swap_complete);
6490 mutex_unlock(&port->lock);
6492 if (!wait_for_completion_timeout(&port->swap_complete,
6496 ret = port->swap_status;
6501 mutex_unlock(&port->lock);
6503 mutex_unlock(&port->swap_lock);
6509 struct tcpm_port *port = typec_get_drvdata(p);
6512 mutex_lock(&port->swap_lock);
6513 mutex_lock(&port->lock);
6515 if (port->state != SRC_READY && port->state != SNK_READY) {
6520 if (role == port->vconn_role) {
6525 port->upcoming_state = VCONN_SWAP_SEND;
6526 ret = tcpm_ams_start(port, VCONN_SWAP);
6528 port->upcoming_state = INVALID_STATE;
6532 port->swap_status = 0;
6533 port->swap_pending = true;
6534 reinit_completion(&port->swap_complete);
6535 mutex_unlock(&port->lock);
6537 if (!wait_for_completion_timeout(&port->swap_complete,
6541 ret = port->swap_status;
6546 mutex_unlock(&port->lock);
6548 mutex_unlock(&port->swap_lock);
6554 struct tcpm_port *port = typec_get_drvdata(p);
6555 struct tcpc_dev *tcpc = port->tcpc;
6558 mutex_lock(&port->lock);
6562 port->try_role = role;
6563 port->try_src_count = 0;
6564 port->try_snk_count = 0;
6565 mutex_unlock(&port->lock);
6570 static int tcpm_pps_set_op_curr(struct tcpm_port *port, u16 req_op_curr)
6575 mutex_lock(&port->swap_lock);
6576 mutex_lock(&port->lock);
6578 if (!port->pps_data.active) {
6583 if (port->state != SNK_READY) {
6588 if (req_op_curr > port->pps_data.max_curr) {
6593 target_mw = (req_op_curr * port->supply_voltage) / 1000;
6594 if (target_mw < port->operating_snk_mw) {
6599 port->upcoming_state = SNK_NEGOTIATE_PPS_CAPABILITIES;
6600 ret = tcpm_ams_start(port, POWER_NEGOTIATION);
6602 port->upcoming_state = INVALID_STATE;
6609 reinit_completion(&port->pps_complete);
6610 port->pps_data.req_op_curr = req_op_curr;
6611 port->pps_status = 0;
6612 port->pps_pending = true;
6613 mutex_unlock(&port->lock);
6615 if (!wait_for_completion_timeout(&port->pps_complete,
6619 ret = port->pps_status;
6624 mutex_unlock(&port->lock);
6626 mutex_unlock(&port->swap_lock);
6631 static int tcpm_pps_set_out_volt(struct tcpm_port *port, u16 req_out_volt)
6636 mutex_lock(&port->swap_lock);
6637 mutex_lock(&port->lock);
6639 if (!port->pps_data.active) {
6644 if (port->state != SNK_READY) {
6649 target_mw = (port->current_limit * req_out_volt) / 1000;
6650 if (target_mw < port->operating_snk_mw) {
6655 port->upcoming_state = SNK_NEGOTIATE_PPS_CAPABILITIES;
6656 ret = tcpm_ams_start(port, POWER_NEGOTIATION);
6658 port->upcoming_state = INVALID_STATE;
6665 reinit_completion(&port->pps_complete);
6666 port->pps_data.req_out_volt = req_out_volt;
6667 port->pps_status = 0;
6668 port->pps_pending = true;
6669 mutex_unlock(&port->lock);
6671 if (!wait_for_completion_timeout(&port->pps_complete,
6675 ret = port->pps_status;
6680 mutex_unlock(&port->lock);
6682 mutex_unlock(&port->swap_lock);
6687 static int tcpm_pps_activate(struct tcpm_port *port, bool activate)
6691 mutex_lock(&port->swap_lock);
6692 mutex_lock(&port->lock);
6694 if (!port->pps_data.supported) {
6700 if (!port->pps_data.active && !activate)
6703 if (port->state != SNK_READY) {
6709 port->upcoming_state = SNK_NEGOTIATE_PPS_CAPABILITIES;
6711 port->upcoming_state = SNK_NEGOTIATE_CAPABILITIES;
6712 ret = tcpm_ams_start(port, POWER_NEGOTIATION);
6714 port->upcoming_state = INVALID_STATE;
6718 reinit_completion(&port->pps_complete);
6719 port->pps_status = 0;
6720 port->pps_pending = true;
6724 port->pps_data.req_out_volt = port->supply_voltage;
6725 port->pps_data.req_op_curr = port->current_limit;
6727 mutex_unlock(&port->lock);
6729 if (!wait_for_completion_timeout(&port->pps_complete,
6733 ret = port->pps_status;
6738 mutex_unlock(&port->lock);
6740 mutex_unlock(&port->swap_lock);
6745 static void tcpm_init(struct tcpm_port *port)
6749 port->tcpc->init(port->tcpc);
6751 tcpm_reset_port(port);
6758 port->vbus_present = port->tcpc->get_vbus(port->tcpc);
6759 if (port->vbus_present)
6760 port->vbus_never_low = true;
6773 if (port->vbus_present)
6774 port->vbus_vsafe0v = false;
6775 else if (!port->tcpc->is_vbus_vsafe0v)
6776 port->vbus_vsafe0v = true;
6778 port->vbus_vsafe0v = port->tcpc->is_vbus_vsafe0v(port->tcpc);
6780 tcpm_set_state(port, tcpm_default_state(port), 0);
6782 if (port->tcpc->get_cc(port->tcpc, &cc1, &cc2) == 0)
6783 _tcpm_cc_change(port, cc1, cc2);
6789 tcpm_set_state(port, PORT_RESET, 0);
6794 struct tcpm_port *port = typec_get_drvdata(p);
6796 mutex_lock(&port->lock);
6797 if (type == port->port_type)
6800 port->port_type = type;
6802 if (!port->connected) {
6803 tcpm_set_state(port, PORT_RESET, 0);
6805 if (!(port->pwr_role == TYPEC_SINK &&
6806 port->data_role == TYPEC_DEVICE))
6807 tcpm_set_state(port, PORT_RESET, 0);
6809 if (!(port->pwr_role == TYPEC_SOURCE &&
6810 port->data_role == TYPEC_HOST))
6811 tcpm_set_state(port, PORT_RESET, 0);
6815 mutex_unlock(&port->lock);
6819 static struct pd_data *tcpm_find_pd_data(struct tcpm_port *port, struct usb_power_delivery *pd)
6823 for (i = 0; port->pd_list[i]; i++) {
6824 if (port->pd_list[i]->pd == pd)
6825 return port->pd_list[i];
6833 struct tcpm_port *port = typec_get_drvdata(p);
6835 return port->pds;
6840 struct tcpm_port *port = typec_get_drvdata(p);
6844 mutex_lock(&port->lock);
6846 if (port->selected_pd == pd)
6849 data = tcpm_find_pd_data(port, pd);
6857 port->snk_pdo[i] = data->sink_desc.pdo[i];
6858 port->nr_snk_pdo = i;
6859 port->operating_snk_mw = data->operating_snk_mw;
6864 port->src_pdo[i] = data->source_desc.pdo[i];
6865 port->nr_src_pdo = i;
6868 switch (port->state) {
6872 tcpm_set_cc(port, tcpm_rp_cc(port));
6879 port->caps_count = 0;
6880 port->upcoming_state = SRC_SEND_CAPABILITIES;
6881 ret = tcpm_ams_start(port, POWER_NEGOTIATION);
6883 port->upcoming_state = INVALID_STATE;
6892 if (port->pps_data.active)
6893 port->upcoming_state = SNK_NEGOTIATE_PPS_CAPABILITIES;
6894 else if (port->pd_capable)
6895 port->upcoming_state = SNK_NEGOTIATE_CAPABILITIES;
6899 port->update_sink_caps = true;
6901 ret = tcpm_ams_start(port, POWER_NEGOTIATION);
6903 port->upcoming_state = INVALID_STATE;
6911 port->port_source_caps = data->source_cap;
6912 port->port_sink_caps = data->sink_cap;
6914 port->selected_pd = pd;
6915 typec_port_set_usb_power_delivery(p, port->selected_pd);
6917 mutex_unlock(&port->lock);
6931 void tcpm_tcpc_reset(struct tcpm_port *port)
6933 mutex_lock(&port->lock);
6935 tcpm_init(port);
6936 mutex_unlock(&port->lock);
6940 static void tcpm_port_unregister_pd(struct tcpm_port *port)
6944 port->port_sink_caps = NULL;
6945 port->port_source_caps = NULL;
6946 for (i = 0; i < port->pd_count; i++) {
6947 usb_power_delivery_unregister_capabilities(port->pd_list[i]->sink_cap);
6948 usb_power_delivery_unregister_capabilities(port->pd_list[i]->source_cap);
6949 devm_kfree(port->dev, port->pd_list[i]);
6950 port->pd_list[i] = NULL;
6951 usb_power_delivery_unregister(port->pds[i]);
6952 port->pds[i] = NULL;
6956 static int tcpm_port_register_pd(struct tcpm_port *port)
6958 struct usb_power_delivery_desc desc = { port->typec_caps.pd_revision };
6962 if (!port->nr_src_pdo && !port->nr_snk_pdo)
6965 for (i = 0; i < port->pd_count; i++) {
6966 port->pds[i] = usb_power_delivery_register(port->dev, &desc);
6967 if (IS_ERR(port->pds[i])) {
6968 ret = PTR_ERR(port->pds[i]);
6971 port->pd_list[i]->pd = port->pds[i];
6973 if (port->pd_list[i]->source_desc.pdo[0]) {
6974 cap = usb_power_delivery_register_capabilities(port->pds[i],
6975 &port->pd_list[i]->source_desc);
6980 port->pd_list[i]->source_cap = cap;
6983 if (port->pd_list[i]->sink_desc.pdo[0]) {
6984 cap = usb_power_delivery_register_capabilities(port->pds[i],
6985 &port->pd_list[i]->sink_desc);
6990 port->pd_list[i]->sink_cap = cap;
6994 port->port_source_caps = port->pd_list[0]->source_cap;
6995 port->port_sink_caps = port->pd_list[0]->sink_cap;
6996 port->selected_pd = port->pds[0];
7000 tcpm_port_unregister_pd(port);
7005 static int tcpm_fw_get_caps(struct tcpm_port *port, struct fwnode_handle *fwnode)
7027 ret = typec_get_fw_cap(&port->typec_caps, fwnode);
7034 port->typec_caps.accessory[mode++] = TYPEC_ACCESSORY_AUDIO;
7037 port->typec_caps.accessory[mode++] = TYPEC_ACCESSORY_DEBUG;
7039 port->port_type = port->typec_caps.type;
7040 port->pd_supported = !fwnode_property_read_bool(fwnode, "pd-disable");
7041 port->slow_charger_loop = fwnode_property_read_bool(fwnode, "slow-charger-loop");
7042 port->self_powered = fwnode_property_read_bool(fwnode, "self-powered");
7044 if (!port->pd_supported) {
7051 port->src_rp = tcpm_pwr_opmode_to_rp(ret);
7058 if (port->port_type == TYPEC_PORT_DRP) {
7062 port->new_source_frs_current = frs_current;
7071 port->pd_count = 1;
7074 port->pd_count++;
7076 if (!port->pd_count) {
7082 port->pds = devm_kcalloc(port->dev, port->pd_count, sizeof(struct usb_power_delivery *),
7084 if (!port->pds) {
7089 port->pd_list = devm_kcalloc(port->dev, port->pd_count, sizeof(struct pd_data *),
7091 if (!port->pd_list) {
7096 for (i = 0; i < port->pd_count; i++) {
7097 port->pd_list[i] = devm_kzalloc(port->dev, sizeof(struct pd_data), GFP_KERNEL);
7098 if (!port->pd_list[i]) {
7103 src_pdo = port->pd_list[i]->source_desc.pdo;
7104 port->pd_list[i]->source_desc.role = TYPEC_SOURCE;
7105 snk_pdo = port->pd_list[i]->sink_desc.pdo;
7106 port->pd_list[i]->sink_desc.role = TYPEC_SINK;
7114 if (port->port_type != TYPEC_PORT_SNK) {
7129 ret = tcpm_validate_caps(port, src_pdo, nr_src_pdo);
7134 port->nr_src_pdo = nr_src_pdo;
7135 memcpy_and_pad(port->src_pdo, sizeof(u32) * PDO_MAX_OBJECTS,
7136 port->pd_list[0]->source_desc.pdo,
7142 if (port->port_type != TYPEC_PORT_SRC) {
7158 ret = tcpm_validate_caps(port, snk_pdo, nr_snk_pdo);
7167 port->pd_list[i]->operating_snk_mw = uw / 1000;
7170 port->nr_snk_pdo = nr_snk_pdo;
7171 memcpy_and_pad(port->snk_pdo, sizeof(u32) * PDO_MAX_OBJECTS,
7172 port->pd_list[0]->sink_desc.pdo,
7175 port->operating_snk_mw = port->pd_list[0]->operating_snk_mw;
7188 static int tcpm_fw_get_snk_vdos(struct tcpm_port *port, struct fwnode_handle *fwnode)
7197 port->nr_snk_vdo = min(ret, VDO_MAX_OBJECTS);
7198 if (port->nr_snk_vdo) {
7200 port->snk_vdo,
7201 port->nr_snk_vdo);
7207 if (port->nr_snk_vdo) {
7214 port->nr_snk_vdo_v1 = min(ret, VDO_MAX_OBJECTS);
7216 port->snk_vdo_v1,
7217 port->nr_snk_vdo_v1);
7242 static int tcpm_psy_get_online(struct tcpm_port *port,
7245 if (port->vbus_charge) {
7246 if (port->pps_data.active)
7257 static int tcpm_psy_get_voltage_min(struct tcpm_port *port,
7260 if (port->pps_data.active)
7261 val->intval = port->pps_data.min_volt * 1000;
7263 val->intval = port->supply_voltage * 1000;
7268 static int tcpm_psy_get_voltage_max(struct tcpm_port *port,
7271 if (port->pps_data.active)
7272 val->intval = port->pps_data.max_volt * 1000;
7274 val->intval = port->supply_voltage * 1000;
7279 static int tcpm_psy_get_voltage_now(struct tcpm_port *port,
7282 val->intval = port->supply_voltage * 1000;
7287 static int tcpm_psy_get_current_max(struct tcpm_port *port,
7290 if (port->pps_data.active)
7291 val->intval = port->pps_data.max_curr * 1000;
7293 val->intval = port->current_limit * 1000;
7298 static int tcpm_psy_get_current_now(struct tcpm_port *port,
7301 val->intval = port->current_limit * 1000;
7306 static int tcpm_psy_get_input_power_limit(struct tcpm_port *port,
7312 for (i = 0; i < port->nr_source_caps; i++) {
7313 u32 pdo = port->source_caps[i];
7331 struct tcpm_port *port = power_supply_get_drvdata(psy);
7336 val->intval = port->usb_type;
7339 ret = tcpm_psy_get_online(port, val);
7342 ret = tcpm_psy_get_voltage_min(port, val);
7345 ret = tcpm_psy_get_voltage_max(port, val);
7348 ret = tcpm_psy_get_voltage_now(port, val);
7351 ret = tcpm_psy_get_current_max(port, val);
7354 ret = tcpm_psy_get_current_now(port, val);
7357 tcpm_psy_get_input_power_limit(port, val);
7367 static int tcpm_psy_set_online(struct tcpm_port *port,
7374 ret = tcpm_pps_activate(port, false);
7377 ret = tcpm_pps_activate(port, true);
7391 struct tcpm_port *port = power_supply_get_drvdata(psy);
7398 if (!port->pd_supported)
7403 ret = tcpm_psy_set_online(port, val);
7406 ret = tcpm_pps_set_out_volt(port, val->intval / 1000);
7409 if (val->intval > port->pps_data.max_curr * 1000)
7412 ret = tcpm_pps_set_op_curr(port, val->intval / 1000);
7418 power_supply_changed(port->psy);
7443 static int devm_tcpm_psy_register(struct tcpm_port *port)
7446 const char *port_dev_name = dev_name(port->dev);
7451 psy_cfg.drv_data = port;
7452 psy_cfg.fwnode = dev_fwnode(port->dev);
7453 psy_name = devm_kzalloc(port->dev, psy_name_len, GFP_KERNEL);
7459 port->psy_desc.name = psy_name;
7460 port->psy_desc.type = POWER_SUPPLY_TYPE_USB;
7461 port->psy_desc.usb_types = tcpm_psy_usb_types;
7462 port->psy_desc.num_usb_types = ARRAY_SIZE(tcpm_psy_usb_types);
7463 port->psy_desc.properties = tcpm_psy_props;
7464 port->psy_desc.num_properties = ARRAY_SIZE(tcpm_psy_props);
7465 port->psy_desc.get_property = tcpm_psy_get_prop;
7466 port->psy_desc.set_property = tcpm_psy_set_prop;
7467 port->psy_desc.property_is_writeable = tcpm_psy_prop_writeable;
7469 port->usb_type = POWER_SUPPLY_USB_TYPE_C;
7471 port->psy = devm_power_supply_register(port->dev, &port->psy_desc,
7474 return PTR_ERR_OR_ZERO(port->psy);
7479 struct tcpm_port *port = container_of(timer, struct tcpm_port, state_machine_timer);
7481 if (port->registered)
7482 kthread_queue_work(port->wq, &port->state_machine);
7488 struct tcpm_port *port = container_of(timer, struct tcpm_port, vdm_state_machine_timer);
7490 if (port->registered)
7491 kthread_queue_work(port->wq, &port->vdm_state_machine);
7497 struct tcpm_port *port = container_of(timer, struct tcpm_port, enable_frs_timer);
7499 if (port->registered)
7500 kthread_queue_work(port->wq, &port->enable_frs);
7506 struct tcpm_port *port = container_of(timer, struct tcpm_port, send_discover_timer);
7508 if (port->registered)
7509 kthread_queue_work(port->wq, &port->send_discover_work);
7515 struct tcpm_port *port;
7524 port = devm_kzalloc(dev, sizeof(*port), GFP_KERNEL);
7525 if (!port)
7528 port->dev = dev;
7529 port->tcpc = tcpc;
7531 mutex_init(&port->lock);
7532 mutex_init(&port->swap_lock);
7534 port->wq = kthread_create_worker(0, dev_name(dev));
7535 if (IS_ERR(port->wq))
7536 return ERR_CAST(port->wq);
7537 sched_set_fifo(port->wq->task);
7539 kthread_init_work(&port->state_machine, tcpm_state_machine_work);
7540 kthread_init_work(&port->vdm_state_machine, vdm_state_machine_work);
7541 kthread_init_work(&port->event_work, tcpm_pd_event_handler);
7542 kthread_init_work(&port->enable_frs, tcpm_enable_frs_work);
7543 kthread_init_work(&port->send_discover_work, tcpm_send_discover_work);
7544 hrtimer_init(&port->state_machine_timer, CLOCK_MONOTONIC, HRTIMER_MODE_REL);
7545 port->state_machine_timer.function = state_machine_timer_handler;
7546 hrtimer_init(&port->vdm_state_machine_timer, CLOCK_MONOTONIC, HRTIMER_MODE_REL);
7547 port->vdm_state_machine_timer.function = vdm_state_machine_timer_handler;
7548 hrtimer_init(&port->enable_frs_timer, CLOCK_MONOTONIC, HRTIMER_MODE_REL);
7549 port->enable_frs_timer.function = enable_frs_timer_handler;
7550 hrtimer_init(&port->send_discover_timer, CLOCK_MONOTONIC, HRTIMER_MODE_REL);
7551 port->send_discover_timer.function = send_discover_timer_handler;
7553 spin_lock_init(&port->pd_event_lock);
7555 init_completion(&port->tx_complete);
7556 init_completion(&port->swap_complete);
7557 init_completion(&port->pps_complete);
7558 tcpm_debugfs_init(port);
7560 err = tcpm_fw_get_caps(port, tcpc->fwnode);
7563 err = tcpm_fw_get_snk_vdos(port, tcpc->fwnode);
7567 port->try_role = port->typec_caps.prefer_role;
7569 port->typec_caps.revision = 0x0120; /* Type-C spec release 1.2 */
7570 port->typec_caps.pd_revision = 0x0300; /* USB-PD spec release 3.0 */
7571 port->typec_caps.svdm_version = SVDM_VER_2_0;
7572 port->typec_caps.driver_data = port;
7573 port->typec_caps.ops = &tcpm_ops;
7574 port->typec_caps.orientation_aware = 1;
7576 port->partner_desc.identity = &port->partner_ident;
7578 port->role_sw = usb_role_switch_get(port->dev);
7579 if (!port->role_sw)
7580 port->role_sw = fwnode_usb_role_switch_get(tcpc->fwnode);
7581 if (IS_ERR(port->role_sw)) {
7582 err = PTR_ERR(port->role_sw);
7586 err = devm_tcpm_psy_register(port);
7589 power_supply_changed(port->psy);
7591 err = tcpm_port_register_pd(port);
7595 if (port->pds)
7596 port->typec_caps.pd = port->pds[0];
7598 port->typec_port = typec_register_port(port->dev, &port->typec_caps);
7599 if (IS_ERR(port->typec_port)) {
7600 err = PTR_ERR(port->typec_port);
7604 typec_port_register_altmodes(port->typec_port,
7605 &tcpm_altmode_ops, port,
7606 port->port_altmode, ALTMODE_DISCOVERY_MAX);
7607 typec_port_register_cable_ops(port->port_altmode, ARRAY_SIZE(port->port_altmode),
7609 port->registered = true;
7611 mutex_lock(&port->lock);
7612 tcpm_init(port);
7613 mutex_unlock(&port->lock);
7615 tcpm_log(port, "%s: registered", dev_name(dev));
7616 return port;
7619 tcpm_port_unregister_pd(port);
7621 usb_role_switch_put(port->role_sw);
7623 tcpm_debugfs_exit(port);
7624 kthread_destroy_worker(port->wq);
7629 void tcpm_unregister_port(struct tcpm_port *port)
7633 port->registered = false;
7634 kthread_destroy_worker(port->wq);
7636 hrtimer_cancel(&port->send_discover_timer);
7637 hrtimer_cancel(&port->enable_frs_timer);
7638 hrtimer_cancel(&port->vdm_state_machine_timer);
7639 hrtimer_cancel(&port->state_machine_timer);
7641 tcpm_reset_port(port);
7643 tcpm_port_unregister_pd(port);
7645 for (i = 0; i < ARRAY_SIZE(port->port_altmode); i++)
7646 typec_unregister_altmode(port->port_altmode[i]);
7647 typec_unregister_port(port->typec_port);
7648 usb_role_switch_put(port->role_sw);
7649 tcpm_debugfs_exit(port);