S(VCONN_SWAP_WAIT_FOR_VCONN), \
S(VCONN_SWAP_TURN_ON_VCONN), \
S(VCONN_SWAP_TURN_OFF_VCONN), \
+ S(VCONN_SWAP_SEND_SOFT_RESET), \
\
S(FR_SWAP_SEND), \
S(FR_SWAP_SEND_TIMEOUT), \
S(PORT_RESET_WAIT_OFF), \
\
S(AMS_START), \
- S(CHUNK_NOT_SUPP)
+ S(CHUNK_NOT_SUPP), \
+ \
+ S(SRC_VDM_IDENTITY_REQUEST)
#define FOREACH_AMS(S) \
S(NONE_AMS), \
struct typec_partner_desc partner_desc;
struct typec_partner *partner;
+ struct usb_pd_identity cable_ident;
+ struct typec_cable_desc cable_desc;
+ struct typec_cable *cable;
+ struct typec_plug_desc plug_prime_desc;
+ struct typec_plug *plug_prime;
+
enum typec_cc_status cc_req;
enum typec_cc_status src_rp; /* work only if pd_supported == false */
/* Alternate mode data */
struct pd_mode_data mode_data;
+ struct pd_mode_data mode_data_prime;
struct typec_altmode *partner_altmode[ALTMODE_DISCOVERY_MAX];
+ struct typec_altmode *plug_prime_altmode[ALTMODE_DISCOVERY_MAX];
struct typec_altmode *port_altmode[ALTMODE_DISCOVERY_MAX];
/* Deadline in jiffies to exit src_try_wait state */
* transitions.
*/
bool potential_contaminant;
+
+ /* SOP* Related Fields */
+ /*
+ * Flag to determine if SOP' Discover Identity is available. The flag
+ * is set if Discover Identity on SOP' does not immediately follow
+ * Discover Identity on SOP.
+ */
+ bool send_discover_prime;
+ /*
+ * tx_sop_type determines which SOP* a message is being sent on.
+ * For messages that are queued and not sent immediately such as in
+ * tcpm_queue_message or messages that send after state changes,
+ * the tx_sop_type is set accordingly.
+ */
+ enum tcpm_transmit_type tx_sop_type;
+ /*
+ * Prior to discovering the port partner's Specification Revision, the
+ * Vconn source and cable plug will use the lower of their two revisions.
+ *
+ * When the port partner's Specification Revision is discovered, the following
+ * rules are put in place.
+ * 1. If the cable revision (1) is lower than the revision negotiated
+ * between the port and partner (2), the port and partner will communicate
+ * on revision (2), but the port and cable will communicate on revision (1).
+ * 2. If the cable revision (1) is higher than the revision negotiated
+ * between the port and partner (2), the port and partner will communicate
+ * on revision (2), and the port and cable will communicate on revision (2)
+ * as well.
+ */
+ unsigned int negotiated_rev_prime;
+ /*
+ * Each SOP* type must maintain their own tx and rx message IDs
+ */
+ unsigned int message_id_prime;
+ unsigned int rx_msgid_prime;
#ifdef CONFIG_DEBUG_FS
struct dentry *dentry;
struct mutex logbuffer_lock; /* log buffer access lock */
struct kthread_work work;
struct tcpm_port *port;
struct pd_message msg;
+ enum tcpm_transmit_type rx_sop_type;
};
static const char * const pd_rev[] = {
}
static int tcpm_pd_transmit(struct tcpm_port *port,
- enum tcpm_transmit_type type,
+ enum tcpm_transmit_type tx_sop_type,
const struct pd_message *msg)
{
unsigned long timeout;
int ret;
+ unsigned int negotiated_rev;
+
+ switch (tx_sop_type) {
+ case TCPC_TX_SOP_PRIME:
+ negotiated_rev = port->negotiated_rev_prime;
+ break;
+ case TCPC_TX_SOP:
+ default:
+ negotiated_rev = port->negotiated_rev;
+ break;
+ }
if (msg)
tcpm_log(port, "PD TX, header: %#x", le16_to_cpu(msg->header));
else
- tcpm_log(port, "PD TX, type: %#x", type);
+ tcpm_log(port, "PD TX, type: %#x", tx_sop_type);
reinit_completion(&port->tx_complete);
- ret = port->tcpc->pd_transmit(port->tcpc, type, msg, port->negotiated_rev);
+ ret = port->tcpc->pd_transmit(port->tcpc, tx_sop_type, msg, negotiated_rev);
if (ret < 0)
return ret;
switch (port->tx_status) {
case TCPC_TX_SUCCESS:
- port->message_id = (port->message_id + 1) & PD_HEADER_ID_MASK;
+ switch (tx_sop_type) {
+ case TCPC_TX_SOP_PRIME:
+ port->message_id_prime = (port->message_id_prime + 1) &
+ PD_HEADER_ID_MASK;
+ break;
+ case TCPC_TX_SOP:
+ default:
+ port->message_id = (port->message_id + 1) &
+ PD_HEADER_ID_MASK;
+ break;
+ }
/*
* USB PD rev 2.0, 8.3.2.2.1:
* USB PD rev 3.0, 8.3.2.1.3:
if (ret < 0)
return ret;
+ if (port->tcpc->set_orientation) {
+ ret = port->tcpc->set_orientation(port->tcpc, orientation);
+ if (ret < 0)
+ return ret;
+ }
+
port->pwr_role = role;
port->data_role = data;
typec_set_data_role(port->typec_port, data);
* VDM/VDO handling functions
*/
static void tcpm_queue_vdm(struct tcpm_port *port, const u32 header,
- const u32 *data, int cnt)
+ const u32 *data, int cnt, enum tcpm_transmit_type tx_sop_type)
{
u32 vdo_hdr = port->vdo_data[0];
/* If is sending discover_identity, handle received message first */
if (PD_VDO_SVDM(vdo_hdr) && PD_VDO_CMD(vdo_hdr) == CMD_DISCOVER_IDENT) {
- port->send_discover = true;
+ if (tx_sop_type == TCPC_TX_SOP_PRIME)
+ port->send_discover_prime = true;
+ else
+ port->send_discover = true;
mod_send_discover_delayed_work(port, SEND_DISCOVER_RETRY_MS);
} else {
/* Make sure we are not still processing a previous VDM packet */
port->vdm_state = VDM_STATE_READY;
port->vdm_sm_running = true;
+ port->tx_sop_type = tx_sop_type;
+
mod_vdm_delayed_work(port, 0);
}
static void tcpm_queue_vdm_unlocked(struct tcpm_port *port, const u32 header,
- const u32 *data, int cnt)
+ const u32 *data, int cnt, enum tcpm_transmit_type tx_sop_type)
{
mutex_lock(&port->lock);
- tcpm_queue_vdm(port, header, data, cnt);
+ tcpm_queue_vdm(port, header, data, cnt, TCPC_TX_SOP);
mutex_unlock(&port->lock);
}
PD_PRODUCT_PID(product), product & 0xffff);
}
-static bool svdm_consume_svids(struct tcpm_port *port, const u32 *p, int cnt)
+static void svdm_consume_identity_sop_prime(struct tcpm_port *port, const u32 *p, int cnt)
{
- struct pd_mode_data *pmdata = &port->mode_data;
+ u32 idh = p[VDO_INDEX_IDH];
+ u32 product = p[VDO_INDEX_PRODUCT];
+ int svdm_version;
+
+ /*
+ * Attempt to consume identity only if cable currently is not set
+ */
+ if (!IS_ERR_OR_NULL(port->cable))
+ goto register_plug;
+
+ /* Reset cable identity */
+ memset(&port->cable_ident, 0, sizeof(port->cable_ident));
+
+ /* Fill out id header, cert, product, cable VDO 1 */
+ port->cable_ident.id_header = idh;
+ port->cable_ident.cert_stat = p[VDO_INDEX_CSTAT];
+ port->cable_ident.product = product;
+ port->cable_ident.vdo[0] = p[VDO_INDEX_CABLE_1];
+
+ /* Fill out cable desc, infer svdm_version from pd revision */
+ port->cable_desc.type = (enum typec_plug_type) (VDO_TYPEC_CABLE_TYPE(p[VDO_INDEX_CABLE_1]) +
+ USB_PLUG_TYPE_A);
+ port->cable_desc.active = PD_IDH_PTYPE(idh) == IDH_PTYPE_ACABLE ? 1 : 0;
+ /* Log PD Revision and additional cable VDO from negotiated revision */
+ switch (port->negotiated_rev_prime) {
+ case PD_REV30:
+ port->cable_desc.pd_revision = 0x0300;
+ if (port->cable_desc.active)
+ port->cable_ident.vdo[1] = p[VDO_INDEX_CABLE_2];
+ break;
+ case PD_REV20:
+ port->cable_desc.pd_revision = 0x0200;
+ break;
+ default:
+ port->cable_desc.pd_revision = 0x0200;
+ break;
+ }
+ port->cable_desc.identity = &port->cable_ident;
+ /* Register Cable, set identity and svdm_version */
+ port->cable = typec_register_cable(port->typec_port, &port->cable_desc);
+ if (IS_ERR_OR_NULL(port->cable))
+ return;
+ typec_cable_set_identity(port->cable);
+ /* Get SVDM version */
+ svdm_version = PD_VDO_SVDM_VER(p[VDO_INDEX_HDR]);
+ typec_cable_set_svdm_version(port->cable, svdm_version);
+
+register_plug:
+ if (IS_ERR_OR_NULL(port->plug_prime)) {
+ port->plug_prime_desc.index = TYPEC_PLUG_SOP_P;
+ port->plug_prime = typec_register_plug(port->cable,
+ &port->plug_prime_desc);
+ }
+}
+
+static bool svdm_consume_svids(struct tcpm_port *port, const u32 *p, int cnt,
+ enum tcpm_transmit_type rx_sop_type)
+{
+ struct pd_mode_data *pmdata = rx_sop_type == TCPC_TX_SOP_PRIME ?
+ &port->mode_data_prime : &port->mode_data;
int i;
for (i = 1; i < cnt; i++) {
return false;
}
-static void svdm_consume_modes(struct tcpm_port *port, const u32 *p, int cnt)
+static void svdm_consume_modes(struct tcpm_port *port, const u32 *p, int cnt,
+ enum tcpm_transmit_type rx_sop_type)
{
struct pd_mode_data *pmdata = &port->mode_data;
struct typec_altmode_desc *paltmode;
int i;
- if (pmdata->altmodes >= ARRAY_SIZE(port->partner_altmode)) {
- /* Already logged in svdm_consume_svids() */
+ switch (rx_sop_type) {
+ case TCPC_TX_SOP_PRIME:
+ pmdata = &port->mode_data_prime;
+ if (pmdata->altmodes >= ARRAY_SIZE(port->plug_prime_altmode)) {
+ /* Already logged in svdm_consume_svids() */
+ return;
+ }
+ break;
+ case TCPC_TX_SOP:
+ pmdata = &port->mode_data;
+ if (pmdata->altmodes >= ARRAY_SIZE(port->partner_altmode)) {
+ /* Already logged in svdm_consume_svids() */
+ return;
+ }
+ break;
+ default:
return;
}
}
}
+static void tcpm_register_plug_altmodes(struct tcpm_port *port)
+{
+ struct pd_mode_data *modep = &port->mode_data_prime;
+ struct typec_altmode *altmode;
+ int i;
+
+ typec_plug_set_num_altmodes(port->plug_prime, modep->altmodes);
+
+ for (i = 0; i < modep->altmodes; i++) {
+ altmode = typec_plug_register_altmode(port->plug_prime,
+ &modep->altmode_desc[i]);
+ if (IS_ERR(altmode)) {
+ tcpm_log(port, "Failed to register plug SVID 0x%04x",
+ modep->altmode_desc[i].svid);
+ altmode = NULL;
+ }
+ port->plug_prime_altmode[i] = altmode;
+ }
+}
+
#define supports_modal(port) PD_IDH_MODAL_SUPP((port)->partner_ident.id_header)
+#define supports_modal_cable(port) PD_IDH_MODAL_SUPP((port)->cable_ident.id_header)
+#define supports_host(port) PD_IDH_HOST_SUPP((port->partner_ident.id_header))
+
+/*
+ * Helper to determine whether the port is capable of SOP' communication at the
+ * current point in time.
+ */
+static bool tcpm_can_communicate_sop_prime(struct tcpm_port *port)
+{
+ /* Check to see if tcpc supports SOP' communication */
+ if (!port->tcpc->cable_comm_capable || !port->tcpc->cable_comm_capable(port->tcpc))
+ return false;
+ /*
+ * Power Delivery 2.0 Section 6.3.11
+ * Before communicating with a Cable Plug a Port Should ensure that it
+ * is the Vconn Source and that the Cable Plugs are powered by
+ * performing a Vconn swap if necessary. Since it cannot be guaranteed
+ * that the present Vconn Source is supplying Vconn, the only means to
+ * ensure that the Cable Plugs are powered is for a Port wishing to
+ * communicate with a Cable Plug is to become the Vconn Source.
+ *
+ * Power Delivery 3.0 Section 6.3.11
+ * Before communicating with a Cable Plug a Port Shall ensure that it
+ * is the Vconn source.
+ */
+ if (port->vconn_role != TYPEC_SOURCE)
+ return false;
+ /*
+ * Power Delivery 2.0 Section 2.4.4
+ * When no Contract or an Implicit Contract is in place the Source can
+ * communicate with a Cable Plug using SOP' packets in order to discover
+ * its characteristics.
+ *
+ * Power Delivery 3.0 Section 2.4.4
+ * When no Contract or an Implicit Contract is in place only the Source
+ * port that is supplying Vconn is allowed to send packets to a Cable
+ * Plug and is allowed to respond to packets from the Cable Plug.
+ */
+ if (!port->explicit_contract)
+ return port->pwr_role == TYPEC_SOURCE;
+ if (port->negotiated_rev == PD_REV30)
+ return true;
+ /*
+ * Power Delivery 2.0 Section 2.4.4
+ *
+ * When an Explicit Contract is in place the DFP (either the Source or
+ * the Sink) can communicate with the Cable Plug(s) using SOP’/SOP”
+ * Packets (see Figure 2-3).
+ */
+ if (port->negotiated_rev == PD_REV20)
+ return port->data_role == TYPEC_HOST;
+ return false;
+}
+
+static bool tcpm_attempt_vconn_swap_discovery(struct tcpm_port *port)
+{
+ if (!port->tcpc->attempt_vconn_swap_discovery)
+ return false;
+
+ /* Port is already source, no need to perform swap */
+ if (port->vconn_role == TYPEC_SOURCE)
+ return false;
+
+ /*
+ * Partner needs to support Alternate Modes with modal support. If
+ * partner is also capable of being a USB Host, it could be a device
+ * that supports Alternate Modes as the DFP.
+ */
+ if (!supports_modal(port) || supports_host(port))
+ return false;
+
+ if ((port->negotiated_rev == PD_REV20 && port->data_role == TYPEC_HOST) ||
+ port->negotiated_rev == PD_REV30)
+ return port->tcpc->attempt_vconn_swap_discovery(port->tcpc);
+
+ return false;
+}
+
+
+static bool tcpm_cable_vdm_supported(struct tcpm_port *port)
+{
+ return !IS_ERR_OR_NULL(port->cable) &&
+ typec_cable_is_active(port->cable) &&
+ supports_modal_cable(port) &&
+ tcpm_can_communicate_sop_prime(port);
+}
static int tcpm_pd_svdm(struct tcpm_port *port, struct typec_altmode *adev,
const u32 *p, int cnt, u32 *response,
- enum adev_actions *adev_action)
+ enum adev_actions *adev_action,
+ enum tcpm_transmit_type rx_sop_type,
+ enum tcpm_transmit_type *response_tx_sop_type)
{
struct typec_port *typec = port->typec_port;
- struct typec_altmode *pdev;
- struct pd_mode_data *modep;
+ struct typec_altmode *pdev, *pdev_prime;
+ struct pd_mode_data *modep, *modep_prime;
int svdm_version;
int rlen = 0;
int cmd_type;
int cmd;
int i;
+ int ret;
cmd_type = PD_VDO_CMDT(p[0]);
cmd = PD_VDO_CMD(p[0]);
tcpm_log(port, "Rx VDM cmd 0x%x type %d cmd %d len %d",
p[0], cmd_type, cmd, cnt);
- modep = &port->mode_data;
-
- pdev = typec_match_altmode(port->partner_altmode, ALTMODE_DISCOVERY_MAX,
- PD_VDO_VID(p[0]), PD_VDO_OPOS(p[0]));
-
- svdm_version = typec_get_negotiated_svdm_version(typec);
- if (svdm_version < 0)
- return 0;
+ switch (rx_sop_type) {
+ case TCPC_TX_SOP_PRIME:
+ modep_prime = &port->mode_data_prime;
+ pdev_prime = typec_match_altmode(port->plug_prime_altmode,
+ ALTMODE_DISCOVERY_MAX,
+ PD_VDO_VID(p[0]),
+ PD_VDO_OPOS(p[0]));
+ svdm_version = typec_get_cable_svdm_version(typec);
+ /*
+ * Update SVDM version if cable was discovered before port partner.
+ */
+ if (!IS_ERR_OR_NULL(port->cable) &&
+ PD_VDO_SVDM_VER(p[0]) < svdm_version)
+ typec_cable_set_svdm_version(port->cable, svdm_version);
+ break;
+ case TCPC_TX_SOP:
+ modep = &port->mode_data;
+ pdev = typec_match_altmode(port->partner_altmode,
+ ALTMODE_DISCOVERY_MAX,
+ PD_VDO_VID(p[0]),
+ PD_VDO_OPOS(p[0]));
+ svdm_version = typec_get_negotiated_svdm_version(typec);
+ if (svdm_version < 0)
+ return 0;
+ break;
+ default:
+ modep = &port->mode_data;
+ pdev = typec_match_altmode(port->partner_altmode,
+ ALTMODE_DISCOVERY_MAX,
+ PD_VDO_VID(p[0]),
+ PD_VDO_OPOS(p[0]));
+ svdm_version = typec_get_negotiated_svdm_version(typec);
+ if (svdm_version < 0)
+ return 0;
+ break;
+ }
switch (cmd_type) {
case CMDT_INIT:
+ /*
+ * Only the port or port partner is allowed to initialize SVDM
+ * commands over SOP'. In case the port partner initializes a
+ * sequence when it is not allowed to send SOP' messages, drop
+ * the message should the TCPM port try to process it.
+ */
+ if (rx_sop_type == TCPC_TX_SOP_PRIME)
+ return 0;
+
switch (cmd) {
case CMD_DISCOVER_IDENT:
if (PD_VDO_VID(p[0]) != USB_SID_PD)
(VDO_SVDM_VERS(typec_get_negotiated_svdm_version(typec)));
break;
case CMDT_RSP_ACK:
- /* silently drop message if we are not connected */
- if (IS_ERR_OR_NULL(port->partner))
+ /*
+ * Silently drop message if we are not connected, but can process
+ * if SOP' Discover Identity prior to explicit contract.
+ */
+ if (IS_ERR_OR_NULL(port->partner) &&
+ !(rx_sop_type == TCPC_TX_SOP_PRIME && cmd == CMD_DISCOVER_IDENT))
break;
tcpm_ams_finish(port);
switch (cmd) {
+ /*
+ * SVDM Command Flow for SOP and SOP':
+ * SOP Discover Identity
+ * SOP' Discover Identity
+ * SOP Discover SVIDs
+ * Discover Modes
+ * (Active Cables)
+ * SOP' Discover SVIDs
+ * Discover Modes
+ *
+ * Perform Discover SOP' if the port can communicate with cable
+ * plug.
+ */
case CMD_DISCOVER_IDENT:
- if (PD_VDO_SVDM_VER(p[0]) < svdm_version)
- typec_partner_set_svdm_version(port->partner,
- PD_VDO_SVDM_VER(p[0]));
- /* 6.4.4.3.1 */
- svdm_consume_identity(port, p, cnt);
- response[0] = VDO(USB_SID_PD, 1, typec_get_negotiated_svdm_version(typec),
- CMD_DISCOVER_SVID);
- rlen = 1;
+ switch (rx_sop_type) {
+ case TCPC_TX_SOP:
+ if (PD_VDO_SVDM_VER(p[0]) < svdm_version) {
+ typec_partner_set_svdm_version(port->partner,
+ PD_VDO_SVDM_VER(p[0]));
+ /* If cable is discovered before partner, downgrade svdm */
+ if (!IS_ERR_OR_NULL(port->cable) &&
+ (typec_get_cable_svdm_version(port->typec_port) >
+ svdm_version))
+ typec_cable_set_svdm_version(port->cable,
+ svdm_version);
+ }
+ /* 6.4.4.3.1 */
+ svdm_consume_identity(port, p, cnt);
+ /* Attempt Vconn swap, delay SOP' discovery if necessary */
+ if (tcpm_attempt_vconn_swap_discovery(port)) {
+ port->send_discover_prime = true;
+ port->upcoming_state = VCONN_SWAP_SEND;
+ ret = tcpm_ams_start(port, VCONN_SWAP);
+ if (!ret)
+ return 0;
+ /* Cannot perform Vconn swap */
+ port->upcoming_state = INVALID_STATE;
+ port->send_discover_prime = false;
+ }
+
+ /*
+ * Attempt Discover Identity on SOP' if the
+ * cable was not discovered previously, and use
+ * the SVDM version of the partner to probe.
+ */
+ if (IS_ERR_OR_NULL(port->cable) &&
+ tcpm_can_communicate_sop_prime(port)) {
+ *response_tx_sop_type = TCPC_TX_SOP_PRIME;
+ port->send_discover_prime = true;
+ response[0] = VDO(USB_SID_PD, 1,
+ typec_get_negotiated_svdm_version(typec),
+ CMD_DISCOVER_IDENT);
+ rlen = 1;
+ } else {
+ *response_tx_sop_type = TCPC_TX_SOP;
+ response[0] = VDO(USB_SID_PD, 1,
+ typec_get_negotiated_svdm_version(typec),
+ CMD_DISCOVER_SVID);
+ rlen = 1;
+ }
+ break;
+ case TCPC_TX_SOP_PRIME:
+ /*
+ * svdm_consume_identity_sop_prime will determine
+ * the svdm_version for the cable moving forward.
+ */
+ svdm_consume_identity_sop_prime(port, p, cnt);
+
+ /*
+ * If received in SRC_VDM_IDENTITY_REQUEST, continue
+ * to SRC_SEND_CAPABILITIES
+ */
+ if (port->state == SRC_VDM_IDENTITY_REQUEST) {
+ tcpm_set_state(port, SRC_SEND_CAPABILITIES, 0);
+ return 0;
+ }
+
+ *response_tx_sop_type = TCPC_TX_SOP;
+ response[0] = VDO(USB_SID_PD, 1,
+ typec_get_negotiated_svdm_version(typec),
+ CMD_DISCOVER_SVID);
+ rlen = 1;
+ break;
+ default:
+ return 0;
+ }
break;
case CMD_DISCOVER_SVID:
+ *response_tx_sop_type = rx_sop_type;
/* 6.4.4.3.2 */
- if (svdm_consume_svids(port, p, cnt)) {
+ if (svdm_consume_svids(port, p, cnt, rx_sop_type)) {
response[0] = VDO(USB_SID_PD, 1, svdm_version, CMD_DISCOVER_SVID);
rlen = 1;
- } else if (modep->nsvids && supports_modal(port)) {
- response[0] = VDO(modep->svids[0], 1, svdm_version,
- CMD_DISCOVER_MODES);
- rlen = 1;
+ } else {
+ if (rx_sop_type == TCPC_TX_SOP) {
+ if (modep->nsvids && supports_modal(port)) {
+ response[0] = VDO(modep->svids[0], 1, svdm_version,
+ CMD_DISCOVER_MODES);
+ rlen = 1;
+ }
+ } else if (rx_sop_type == TCPC_TX_SOP_PRIME) {
+ if (modep_prime->nsvids) {
+ response[0] = VDO(modep_prime->svids[0], 1,
+ svdm_version, CMD_DISCOVER_MODES);
+ rlen = 1;
+ }
+ }
}
break;
case CMD_DISCOVER_MODES:
- /* 6.4.4.3.3 */
- svdm_consume_modes(port, p, cnt);
- modep->svid_index++;
- if (modep->svid_index < modep->nsvids) {
- u16 svid = modep->svids[modep->svid_index];
- response[0] = VDO(svid, 1, svdm_version, CMD_DISCOVER_MODES);
- rlen = 1;
- } else {
- tcpm_register_partner_altmodes(port);
+ if (rx_sop_type == TCPC_TX_SOP) {
+ /* 6.4.4.3.3 */
+ svdm_consume_modes(port, p, cnt, rx_sop_type);
+ modep->svid_index++;
+ if (modep->svid_index < modep->nsvids) {
+ u16 svid = modep->svids[modep->svid_index];
+ *response_tx_sop_type = TCPC_TX_SOP;
+ response[0] = VDO(svid, 1, svdm_version,
+ CMD_DISCOVER_MODES);
+ rlen = 1;
+ } else if (tcpm_cable_vdm_supported(port)) {
+ *response_tx_sop_type = TCPC_TX_SOP_PRIME;
+ response[0] = VDO(USB_SID_PD, 1,
+ typec_get_cable_svdm_version(typec),
+ CMD_DISCOVER_SVID);
+ rlen = 1;
+ } else {
+ tcpm_register_partner_altmodes(port);
+ }
+ } else if (rx_sop_type == TCPC_TX_SOP_PRIME) {
+ /* 6.4.4.3.3 */
+ svdm_consume_modes(port, p, cnt, rx_sop_type);
+ modep_prime->svid_index++;
+ if (modep_prime->svid_index < modep_prime->nsvids) {
+ u16 svid = modep_prime->svids[modep_prime->svid_index];
+ *response_tx_sop_type = TCPC_TX_SOP_PRIME;
+ response[0] = VDO(svid, 1,
+ typec_get_cable_svdm_version(typec),
+ CMD_DISCOVER_MODES);
+ rlen = 1;
+ } else {
+ tcpm_register_plug_altmodes(port);
+ tcpm_register_partner_altmodes(port);
+ }
}
break;
case CMD_ENTER_MODE:
- if (adev && pdev)
- *adev_action = ADEV_QUEUE_VDM_SEND_EXIT_MODE_ON_FAIL;
+ *response_tx_sop_type = rx_sop_type;
+ if (rx_sop_type == TCPC_TX_SOP) {
+ if (adev && pdev) {
+ typec_altmode_update_active(pdev, true);
+ *adev_action = ADEV_QUEUE_VDM_SEND_EXIT_MODE_ON_FAIL;
+ }
+ } else if (rx_sop_type == TCPC_TX_SOP_PRIME) {
+ if (adev && pdev_prime) {
+ typec_altmode_update_active(pdev_prime, true);
+ *adev_action = ADEV_QUEUE_VDM_SEND_EXIT_MODE_ON_FAIL;
+ }
+ }
return 0;
case CMD_EXIT_MODE:
- if (adev && pdev) {
- /* Back to USB Operation */
- *adev_action = ADEV_NOTIFY_USB_AND_QUEUE_VDM;
- return 0;
+ *response_tx_sop_type = rx_sop_type;
+ if (rx_sop_type == TCPC_TX_SOP) {
+ if (adev && pdev) {
+ typec_altmode_update_active(pdev, false);
+ /* Back to USB Operation */
+ *adev_action = ADEV_NOTIFY_USB_AND_QUEUE_VDM;
+ return 0;
+ }
}
break;
case VDO_CMD_VENDOR(0) ... VDO_CMD_VENDOR(15):
enum tcpm_ams ams);
static void tcpm_handle_vdm_request(struct tcpm_port *port,
- const __le32 *payload, int cnt)
+ const __le32 *payload, int cnt,
+ enum tcpm_transmit_type rx_sop_type)
{
enum adev_actions adev_action = ADEV_NONE;
struct typec_altmode *adev;
u32 p[PD_MAX_PAYLOAD];
u32 response[8] = { };
int i, rlen = 0;
+ enum tcpm_transmit_type response_tx_sop_type = TCPC_TX_SOP;
for (i = 0; i < cnt; i++)
p[i] = le32_to_cpu(payload[i]);
* - We will send NAK and the flag will be cleared in the state machine.
*/
port->vdm_sm_running = true;
- rlen = tcpm_pd_svdm(port, adev, p, cnt, response, &adev_action);
+ rlen = tcpm_pd_svdm(port, adev, p, cnt, response, &adev_action,
+ rx_sop_type, &response_tx_sop_type);
} else {
if (port->negotiated_rev >= PD_REV30)
tcpm_pd_handle_msg(port, PD_MSG_CTRL_NOT_SUPP, NONE_AMS);
typec_altmode_vdm(adev, p[0], &p[1], cnt);
break;
case ADEV_QUEUE_VDM:
- typec_altmode_vdm(adev, p[0], &p[1], cnt);
+ if (response_tx_sop_type == TCPC_TX_SOP_PRIME)
+ typec_cable_altmode_vdm(adev, TYPEC_PLUG_SOP_P, p[0], &p[1], cnt);
+ else
+ typec_altmode_vdm(adev, p[0], &p[1], cnt);
break;
case ADEV_QUEUE_VDM_SEND_EXIT_MODE_ON_FAIL:
- if (typec_altmode_vdm(adev, p[0], &p[1], cnt)) {
- int svdm_version = typec_get_negotiated_svdm_version(
- port->typec_port);
- if (svdm_version < 0)
- break;
-
- response[0] = VDO(adev->svid, 1, svdm_version,
- CMD_EXIT_MODE);
- response[0] |= VDO_OPOS(adev->mode);
- rlen = 1;
+ if (response_tx_sop_type == TCPC_TX_SOP_PRIME) {
+ if (typec_cable_altmode_vdm(adev, TYPEC_PLUG_SOP_P,
+ p[0], &p[1], cnt)) {
+ int svdm_version = typec_get_cable_svdm_version(
+ port->typec_port);
+ if (svdm_version < 0)
+ break;
+
+ response[0] = VDO(adev->svid, 1, svdm_version,
+ CMD_EXIT_MODE);
+ response[0] |= VDO_OPOS(adev->mode);
+ rlen = 1;
+ }
+ } else {
+ if (typec_altmode_vdm(adev, p[0], &p[1], cnt)) {
+ int svdm_version = typec_get_negotiated_svdm_version(
+ port->typec_port);
+ if (svdm_version < 0)
+ break;
+
+ response[0] = VDO(adev->svid, 1, svdm_version,
+ CMD_EXIT_MODE);
+ response[0] |= VDO_OPOS(adev->mode);
+ rlen = 1;
+ }
}
break;
case ADEV_ATTENTION:
mutex_lock(&port->lock);
if (rlen > 0)
- tcpm_queue_vdm(port, response[0], &response[1], rlen - 1);
+ tcpm_queue_vdm(port, response[0], &response[1], rlen - 1, response_tx_sop_type);
else
port->vdm_sm_running = false;
}
static void tcpm_send_vdm(struct tcpm_port *port, u32 vid, int cmd,
- const u32 *data, int count)
+ const u32 *data, int count, enum tcpm_transmit_type tx_sop_type)
{
- int svdm_version = typec_get_negotiated_svdm_version(port->typec_port);
+ int svdm_version;
u32 header;
- if (svdm_version < 0)
- return;
+ switch (tx_sop_type) {
+ case TCPC_TX_SOP_PRIME:
+ /*
+ * If the port partner is discovered, then the port partner's
+ * SVDM Version will be returned
+ */
+ svdm_version = typec_get_cable_svdm_version(port->typec_port);
+ if (svdm_version < 0)
+ svdm_version = SVDM_VER_MAX;
+ break;
+ case TCPC_TX_SOP:
+ svdm_version = typec_get_negotiated_svdm_version(port->typec_port);
+ if (svdm_version < 0)
+ return;
+ break;
+ default:
+ svdm_version = typec_get_negotiated_svdm_version(port->typec_port);
+ if (svdm_version < 0)
+ return;
+ break;
+ }
if (WARN_ON(count > VDO_MAX_SIZE - 1))
count = VDO_MAX_SIZE - 1;
header = VDO(vid, ((vid & USB_SID_PD) == USB_SID_PD) ?
1 : (PD_VDO_CMD(cmd) <= CMD_ATTENTION),
svdm_version, cmd);
- tcpm_queue_vdm(port, header, data, count);
+ tcpm_queue_vdm(port, header, data, count, tx_sop_type);
}
static unsigned int vdm_ready_timeout(u32 vdm_hdr)
struct pd_message msg;
int i, res = 0;
u32 vdo_hdr = port->vdo_data[0];
+ u32 response[8] = { };
switch (port->vdm_state) {
case VDM_STATE_READY:
* if there's traffic or we're not in PDO ready state don't send
* a VDM.
*/
- if (port->state != SRC_READY && port->state != SNK_READY) {
+ if (port->state != SRC_READY && port->state != SNK_READY &&
+ port->state != SRC_VDM_IDENTITY_REQUEST) {
port->vdm_sm_running = false;
break;
}
case CMD_DISCOVER_IDENT:
res = tcpm_ams_start(port, DISCOVER_IDENTITY);
if (res == 0) {
- port->send_discover = false;
+ switch (port->tx_sop_type) {
+ case TCPC_TX_SOP_PRIME:
+ port->send_discover_prime = false;
+ break;
+ case TCPC_TX_SOP:
+ port->send_discover = false;
+ break;
+ default:
+ port->send_discover = false;
+ break;
+ }
} else if (res == -EAGAIN) {
port->vdo_data[0] = 0;
mod_send_discover_delayed_work(port,
tcpm_ams_finish(port);
break;
case VDM_STATE_ERR_SEND:
+ /*
+ * When sending Discover Identity to SOP' before establishing an
+ * explicit contract, do not retry. Instead, weave sending
+ * Source_Capabilities over SOP and Discover Identity over SOP'.
+ */
+ if (port->state == SRC_VDM_IDENTITY_REQUEST) {
+ tcpm_ams_finish(port);
+ port->vdm_state = VDM_STATE_DONE;
+ tcpm_set_state(port, SRC_SEND_CAPABILITIES, 0);
/*
* A partner which does not support USB PD will not reply,
* so this is not a fatal error. At the same time, some
* devices may not return GoodCRC under some circumstances,
* so we need to retry.
*/
- if (port->vdm_retries < 3) {
+ } else if (port->vdm_retries < 3) {
tcpm_log(port, "VDM Tx error, retry");
port->vdm_retries++;
port->vdm_state = VDM_STATE_READY;
tcpm_ams_finish(port);
} else {
tcpm_ams_finish(port);
+ if (port->tx_sop_type == TCPC_TX_SOP)
+ break;
+ /* Handle SOP' Transmission Errors */
+ switch (PD_VDO_CMD(vdo_hdr)) {
+ /*
+ * If Discover Identity fails on SOP', then resume
+ * discovery process on SOP only.
+ */
+ case CMD_DISCOVER_IDENT:
+ port->vdo_data[0] = 0;
+ response[0] = VDO(USB_SID_PD, 1,
+ typec_get_negotiated_svdm_version(
+ port->typec_port),
+ CMD_DISCOVER_SVID);
+ tcpm_queue_vdm(port, response[0], &response[1],
+ 0, TCPC_TX_SOP);
+ break;
+ /*
+ * If Discover SVIDs or Discover Modes fail, then
+ * proceed with Alt Mode discovery process on SOP.
+ */
+ case CMD_DISCOVER_SVID:
+ tcpm_register_partner_altmodes(port);
+ break;
+ case CMD_DISCOVER_MODES:
+ tcpm_register_partner_altmodes(port);
+ break;
+ default:
+ break;
+ }
}
break;
case VDM_STATE_SEND_MESSAGE:
/* Prepare and send VDM */
memset(&msg, 0, sizeof(msg));
- msg.header = PD_HEADER_LE(PD_DATA_VENDOR_DEF,
- port->pwr_role,
- port->data_role,
- port->negotiated_rev,
- port->message_id, port->vdo_count);
+ if (port->tx_sop_type == TCPC_TX_SOP_PRIME) {
+ msg.header = PD_HEADER_LE(PD_DATA_VENDOR_DEF,
+ 0, /* Cable Plug Indicator for DFP/UFP */
+ 0, /* Reserved */
+ port->negotiated_rev_prime,
+ port->message_id_prime,
+ port->vdo_count);
+ } else {
+ msg.header = PD_HEADER_LE(PD_DATA_VENDOR_DEF,
+ port->pwr_role,
+ port->data_role,
+ port->negotiated_rev,
+ port->message_id,
+ port->vdo_count);
+ }
for (i = 0; i < port->vdo_count; i++)
msg.payload[i] = cpu_to_le32(port->vdo_data[i]);
- res = tcpm_pd_transmit(port, TCPC_TX_SOP, &msg);
+ res = tcpm_pd_transmit(port, port->tx_sop_type, &msg);
if (res < 0) {
port->vdm_state = VDM_STATE_ERR_SEND;
} else {
header = VDO(altmode->svid, vdo ? 2 : 1, svdm_version, CMD_ENTER_MODE);
header |= VDO_OPOS(altmode->mode);
- tcpm_queue_vdm_unlocked(port, header, vdo, vdo ? 1 : 0);
+ tcpm_queue_vdm_unlocked(port, header, vdo, vdo ? 1 : 0, TCPC_TX_SOP);
return 0;
}
header = VDO(altmode->svid, 1, svdm_version, CMD_EXIT_MODE);
header |= VDO_OPOS(altmode->mode);
- tcpm_queue_vdm_unlocked(port, header, NULL, 0);
+ tcpm_queue_vdm_unlocked(port, header, NULL, 0, TCPC_TX_SOP);
return 0;
}
{
struct tcpm_port *port = typec_altmode_get_drvdata(altmode);
- tcpm_queue_vdm_unlocked(port, header, data, count - 1);
+ tcpm_queue_vdm_unlocked(port, header, data, count - 1, TCPC_TX_SOP);
return 0;
}
.vdm = tcpm_altmode_vdm,
};
+
+static int tcpm_cable_altmode_enter(struct typec_altmode *altmode, enum typec_plug_index sop,
+ u32 *vdo)
+{
+ struct tcpm_port *port = typec_altmode_get_drvdata(altmode);
+ int svdm_version;
+ u32 header;
+
+ svdm_version = typec_get_cable_svdm_version(port->typec_port);
+ if (svdm_version < 0)
+ return svdm_version;
+
+ header = VDO(altmode->svid, vdo ? 2 : 1, svdm_version, CMD_ENTER_MODE);
+ header |= VDO_OPOS(altmode->mode);
+
+ tcpm_queue_vdm_unlocked(port, header, vdo, vdo ? 1 : 0, TCPC_TX_SOP_PRIME);
+ return 0;
+}
+
+static int tcpm_cable_altmode_exit(struct typec_altmode *altmode, enum typec_plug_index sop)
+{
+ struct tcpm_port *port = typec_altmode_get_drvdata(altmode);
+ int svdm_version;
+ u32 header;
+
+ svdm_version = typec_get_cable_svdm_version(port->typec_port);
+ if (svdm_version < 0)
+ return svdm_version;
+
+ header = VDO(altmode->svid, 1, svdm_version, CMD_EXIT_MODE);
+ header |= VDO_OPOS(altmode->mode);
+
+ tcpm_queue_vdm_unlocked(port, header, NULL, 0, TCPC_TX_SOP_PRIME);
+ return 0;
+}
+
+static int tcpm_cable_altmode_vdm(struct typec_altmode *altmode, enum typec_plug_index sop,
+ u32 header, const u32 *data, int count)
+{
+ struct tcpm_port *port = typec_altmode_get_drvdata(altmode);
+
+ tcpm_queue_vdm_unlocked(port, header, data, count - 1, TCPC_TX_SOP_PRIME);
+
+ return 0;
+}
+
+static const struct typec_cable_ops tcpm_cable_ops = {
+ .enter = tcpm_cable_altmode_enter,
+ .exit = tcpm_cable_altmode_exit,
+ .vdm = tcpm_cable_altmode_vdm,
+};
+
/*
* PD (data, control) command handling functions
*/
}
static int tcpm_pd_send_control(struct tcpm_port *port,
- enum pd_ctrl_msg_type type);
+ enum pd_ctrl_msg_type type,
+ enum tcpm_transmit_type tx_sop_type);
static void tcpm_handle_alert(struct tcpm_port *port, const __le32 *payload,
int cnt)
}
static void tcpm_pd_data_request(struct tcpm_port *port,
- const struct pd_message *msg)
+ const struct pd_message *msg,
+ enum tcpm_transmit_type rx_sop_type)
{
enum pd_data_msg_type type = pd_header_type_le(msg->header);
unsigned int cnt = pd_header_cnt_le(msg->header);
break;
}
- if (rev < PD_MAX_REV)
+ if (rev < PD_MAX_REV) {
port->negotiated_rev = rev;
+ if (port->negotiated_rev_prime > port->negotiated_rev)
+ port->negotiated_rev_prime = port->negotiated_rev;
+ }
if (port->pwr_role == TYPEC_SOURCE) {
if (port->ams == GET_SOURCE_CAPABILITIES)
break;
}
- if (rev < PD_MAX_REV)
+ if (rev < PD_MAX_REV) {
port->negotiated_rev = rev;
+ if (port->negotiated_rev_prime > port->negotiated_rev)
+ port->negotiated_rev_prime = port->negotiated_rev;
+ }
if (port->pwr_role != TYPEC_SOURCE || cnt != 1) {
tcpm_pd_handle_msg(port,
NONE_AMS);
break;
case PD_DATA_VENDOR_DEF:
- tcpm_handle_vdm_request(port, msg->payload, cnt);
+ tcpm_handle_vdm_request(port, msg->payload, cnt, rx_sop_type);
break;
case PD_DATA_BIST:
port->bist_request = le32_to_cpu(msg->payload[0]);
}
static void tcpm_pd_ctrl_request(struct tcpm_port *port,
- const struct pd_message *msg)
+ const struct pd_message *msg,
+ enum tcpm_transmit_type rx_sop_type)
{
enum pd_ctrl_msg_type type = pd_header_type_le(msg->header);
enum tcpm_state next_state;
+ unsigned int rev = pd_header_rev_le(msg->header);
/*
* Stop VDM state machine if interrupted by other Messages while NOT_SUPP is allowed in
case SOFT_RESET_SEND:
if (port->ams == SOFT_RESET_AMS)
tcpm_ams_finish(port);
+ /*
+ * SOP' Soft Reset is done after Vconn Swap,
+ * which returns to ready state
+ */
+ if (rx_sop_type == TCPC_TX_SOP_PRIME) {
+ if (rev < port->negotiated_rev_prime)
+ port->negotiated_rev_prime = rev;
+ tcpm_set_state(port, ready_state(port), 0);
+ break;
+ }
if (port->pwr_role == TYPEC_SOURCE) {
port->upcoming_state = SRC_SEND_CAPABILITIES;
tcpm_ams_start(port, POWER_NEGOTIATION);
const struct pd_message *msg = &event->msg;
unsigned int cnt = pd_header_cnt_le(msg->header);
struct tcpm_port *port = event->port;
+ enum tcpm_transmit_type rx_sop_type = event->rx_sop_type;
mutex_lock(&port->lock);
enum pd_ctrl_msg_type type = pd_header_type_le(msg->header);
unsigned int msgid = pd_header_msgid_le(msg->header);
+ /*
+ * Drop SOP' messages if cannot receive via
+ * tcpm_can_communicate_sop_prime
+ */
+ if (rx_sop_type == TCPC_TX_SOP_PRIME &&
+ !tcpm_can_communicate_sop_prime(port))
+ goto done;
+
/*
* USB PD standard, 6.6.1.2:
* "... if MessageID value in a received Message is the
* Message). Note: this shall not apply to the Soft_Reset
* Message which always has a MessageID value of zero."
*/
- if (msgid == port->rx_msgid && type != PD_CTRL_SOFT_RESET)
- goto done;
- port->rx_msgid = msgid;
+ switch (rx_sop_type) {
+ case TCPC_TX_SOP_PRIME:
+ if (msgid == port->rx_msgid_prime)
+ goto done;
+ port->rx_msgid_prime = msgid;
+ break;
+ case TCPC_TX_SOP:
+ default:
+ if (msgid == port->rx_msgid && type != PD_CTRL_SOFT_RESET)
+ goto done;
+ port->rx_msgid = msgid;
+ break;
+ }
/*
* If both ends believe to be DFP/host, we have a data role
* mismatch.
*/
if (!!(le16_to_cpu(msg->header) & PD_HEADER_DATA_ROLE) ==
- (port->data_role == TYPEC_HOST)) {
+ (port->data_role == TYPEC_HOST) && rx_sop_type == TCPC_TX_SOP) {
tcpm_log(port,
"Data role mismatch, initiating error recovery");
tcpm_set_state(port, ERROR_RECOVERY, 0);
if (le16_to_cpu(msg->header) & PD_HEADER_EXT_HDR)
tcpm_pd_ext_msg_request(port, msg);
else if (cnt)
- tcpm_pd_data_request(port, msg);
+ tcpm_pd_data_request(port, msg, rx_sop_type);
else
- tcpm_pd_ctrl_request(port, msg);
+ tcpm_pd_ctrl_request(port, msg, rx_sop_type);
}
}
kfree(event);
}
-void tcpm_pd_receive(struct tcpm_port *port, const struct pd_message *msg)
+void tcpm_pd_receive(struct tcpm_port *port, const struct pd_message *msg,
+ enum tcpm_transmit_type rx_sop_type)
{
struct pd_rx_event *event;
kthread_init_work(&event->work, tcpm_pd_rx_handler);
event->port = port;
+ event->rx_sop_type = rx_sop_type;
memcpy(&event->msg, msg, sizeof(*msg));
kthread_queue_work(port->wq, &event->work);
}
EXPORT_SYMBOL_GPL(tcpm_pd_receive);
static int tcpm_pd_send_control(struct tcpm_port *port,
- enum pd_ctrl_msg_type type)
+ enum pd_ctrl_msg_type type,
+ enum tcpm_transmit_type tx_sop_type)
{
struct pd_message msg;
memset(&msg, 0, sizeof(msg));
- msg.header = PD_HEADER_LE(type, port->pwr_role,
- port->data_role,
- port->negotiated_rev,
- port->message_id, 0);
+ switch (tx_sop_type) {
+ case TCPC_TX_SOP_PRIME:
+ msg.header = PD_HEADER_LE(type,
+ 0, /* Cable Plug Indicator for DFP/UFP */
+ 0, /* Reserved */
+ port->negotiated_rev,
+ port->message_id_prime,
+ 0);
+ break;
+ case TCPC_TX_SOP:
+ msg.header = PD_HEADER_LE(type,
+ port->pwr_role,
+ port->data_role,
+ port->negotiated_rev,
+ port->message_id,
+ 0);
+ break;
+ default:
+ msg.header = PD_HEADER_LE(type,
+ port->pwr_role,
+ port->data_role,
+ port->negotiated_rev,
+ port->message_id,
+ 0);
+ break;
+ }
- return tcpm_pd_transmit(port, TCPC_TX_SOP, &msg);
+ return tcpm_pd_transmit(port, tx_sop_type, &msg);
}
/*
switch (queued_message) {
case PD_MSG_CTRL_WAIT:
- tcpm_pd_send_control(port, PD_CTRL_WAIT);
+ tcpm_pd_send_control(port, PD_CTRL_WAIT, TCPC_TX_SOP);
break;
case PD_MSG_CTRL_REJECT:
- tcpm_pd_send_control(port, PD_CTRL_REJECT);
+ tcpm_pd_send_control(port, PD_CTRL_REJECT, TCPC_TX_SOP);
break;
case PD_MSG_CTRL_NOT_SUPP:
- tcpm_pd_send_control(port, PD_CTRL_NOT_SUPP);
+ tcpm_pd_send_control(port, PD_CTRL_NOT_SUPP, TCPC_TX_SOP);
break;
case PD_MSG_DATA_SINK_CAP:
ret = tcpm_pd_send_sink_caps(port);
port->attached = true;
port->send_discover = true;
+ port->send_discover_prime = false;
return 0;
static void tcpm_typec_disconnect(struct tcpm_port *port)
{
+ /*
+ * Unregister plug/cable outside of port->connected because cable can
+ * be discovered before SRC_READY/SNK_READY states where port->connected
+ * is set.
+ */
+ typec_unregister_plug(port->plug_prime);
+ typec_unregister_cable(port->cable);
+ port->plug_prime = NULL;
+ port->cable = NULL;
if (port->connected) {
typec_partner_set_usb_power_delivery(port->partner, NULL);
typec_unregister_partner(port->partner);
static void tcpm_unregister_altmodes(struct tcpm_port *port)
{
struct pd_mode_data *modep = &port->mode_data;
+ struct pd_mode_data *modep_prime = &port->mode_data_prime;
int i;
for (i = 0; i < modep->altmodes; i++) {
typec_unregister_altmode(port->partner_altmode[i]);
port->partner_altmode[i] = NULL;
}
+ for (i = 0; i < modep_prime->altmodes; i++) {
+ typec_unregister_altmode(port->plug_prime_altmode[i]);
+ port->plug_prime_altmode[i] = NULL;
+ }
memset(modep, 0, sizeof(*modep));
+ memset(modep_prime, 0, sizeof(*modep_prime));
}
static void tcpm_set_partner_usb_comm_capable(struct tcpm_port *port, bool capable)
* we can check tcpm_pd_rx_handler() if we had seen it before.
*/
port->rx_msgid = -1;
+ port->rx_msgid_prime = -1;
port->tcpc->set_pd_rx(port->tcpc, false);
tcpm_init_vbus(port); /* also disables charging */
port->attached = true;
port->send_discover = true;
+ port->send_discover_prime = false;
return 0;
}
port->pwr_opmode = TYPEC_PWR_MODE_USB;
port->caps_count = 0;
port->negotiated_rev = PD_MAX_REV;
+ port->negotiated_rev_prime = PD_MAX_REV;
port->message_id = 0;
+ port->message_id_prime = 0;
port->rx_msgid = -1;
+ port->rx_msgid_prime = -1;
port->explicit_contract = false;
/* SNK -> SRC POWER/FAST_ROLE_SWAP finished */
if (port->ams == POWER_ROLE_SWAP ||
}
ret = tcpm_pd_send_source_caps(port);
if (ret < 0) {
- tcpm_set_state(port, SRC_SEND_CAPABILITIES,
- PD_T_SEND_SOURCE_CAP);
+ if (tcpm_can_communicate_sop_prime(port) &&
+ IS_ERR_OR_NULL(port->cable))
+ tcpm_set_state(port, SRC_VDM_IDENTITY_REQUEST, 0);
+ else
+ tcpm_set_state(port, SRC_SEND_CAPABILITIES,
+ PD_T_SEND_SOURCE_CAP);
} else {
/*
* Per standard, we should clear the reset counter here.
case SRC_NEGOTIATE_CAPABILITIES:
ret = tcpm_pd_check_request(port);
if (ret < 0) {
- tcpm_pd_send_control(port, PD_CTRL_REJECT);
+ tcpm_pd_send_control(port, PD_CTRL_REJECT, TCPC_TX_SOP);
if (!port->explicit_contract) {
tcpm_set_state(port,
SRC_WAIT_NEW_CAPABILITIES, 0);
tcpm_set_state(port, SRC_READY, 0);
}
} else {
- tcpm_pd_send_control(port, PD_CTRL_ACCEPT);
+ tcpm_pd_send_control(port, PD_CTRL_ACCEPT, TCPC_TX_SOP);
tcpm_set_partner_usb_comm_capable(port,
!!(port->sink_request & RDO_USB_COMM));
tcpm_set_state(port, SRC_TRANSITION_SUPPLY,
break;
case SRC_TRANSITION_SUPPLY:
/* XXX: regulator_set_voltage(vbus, ...) */
- tcpm_pd_send_control(port, PD_CTRL_PS_RDY);
+ tcpm_pd_send_control(port, PD_CTRL_PS_RDY, TCPC_TX_SOP);
port->explicit_contract = true;
typec_set_pwr_opmode(port->typec_port, TYPEC_PWR_MODE_PD);
port->pwr_opmode = TYPEC_PWR_MODE_PD;
* 6.4.4.3.1 Discover Identity
* "The Discover Identity Command Shall only be sent to SOP when there is an
* Explicit Contract."
- * For now, this driver only supports SOP for DISCOVER_IDENTITY, thus using
- * port->explicit_contract to decide whether to send the command.
+ *
+ * Discover Identity on SOP' should be discovered prior to the
+ * ready state, but if done after a Vconn Swap following Discover
+ * Identity on SOP then the discovery process can be run here
+ * as well.
*/
if (port->explicit_contract) {
- tcpm_set_initial_svdm_version(port);
+ if (port->send_discover_prime) {
+ port->tx_sop_type = TCPC_TX_SOP_PRIME;
+ } else {
+ port->tx_sop_type = TCPC_TX_SOP;
+ tcpm_set_initial_svdm_version(port);
+ }
mod_send_discover_delayed_work(port, 0);
} else {
port->send_discover = false;
+ port->send_discover_prime = false;
}
/*
typec_set_pwr_opmode(port->typec_port, opmode);
port->pwr_opmode = TYPEC_PWR_MODE_USB;
port->negotiated_rev = PD_MAX_REV;
+ port->negotiated_rev_prime = PD_MAX_REV;
port->message_id = 0;
+ port->message_id_prime = 0;
port->rx_msgid = -1;
+ port->rx_msgid_prime = -1;
port->explicit_contract = false;
if (port->ams == POWER_ROLE_SWAP ||
* 6.4.4.3.1 Discover Identity
* "The Discover Identity Command Shall only be sent to SOP when there is an
* Explicit Contract."
- * For now, this driver only supports SOP for DISCOVER_IDENTITY, thus using
- * port->explicit_contract.
+ *
+ * Discover Identity on SOP' should be discovered prior to the
+ * ready state, but if done after a Vconn Swap following Discover
+ * Identity on SOP then the discovery process can be run here
+ * as well.
*/
if (port->explicit_contract) {
- tcpm_set_initial_svdm_version(port);
+ if (port->send_discover_prime) {
+ port->tx_sop_type = TCPC_TX_SOP_PRIME;
+ } else {
+ port->tx_sop_type = TCPC_TX_SOP;
+ tcpm_set_initial_svdm_version(port);
+ }
mod_send_discover_delayed_work(port, 0);
} else {
port->send_discover = false;
+ port->send_discover_prime = false;
}
power_supply_changed(port->psy);
tcpm_unregister_altmodes(port);
port->nr_sink_caps = 0;
port->send_discover = true;
+ port->send_discover_prime = false;
if (port->pwr_role == TYPEC_SOURCE)
tcpm_set_state(port, SRC_HARD_RESET_VBUS_OFF,
PD_T_PS_HARD_RESET);
/* remove existing capabilities */
usb_power_delivery_unregister_capabilities(port->partner_source_caps);
port->partner_source_caps = NULL;
- tcpm_pd_send_control(port, PD_CTRL_ACCEPT);
+ tcpm_pd_send_control(port, PD_CTRL_ACCEPT, TCPC_TX_SOP);
tcpm_ams_finish(port);
if (port->pwr_role == TYPEC_SOURCE) {
port->upcoming_state = SRC_SEND_CAPABILITIES;
tcpm_ams_start(port, SOFT_RESET_AMS);
break;
case SOFT_RESET_SEND:
- port->message_id = 0;
- port->rx_msgid = -1;
- /* remove existing capabilities */
- usb_power_delivery_unregister_capabilities(port->partner_source_caps);
- port->partner_source_caps = NULL;
- if (tcpm_pd_send_control(port, PD_CTRL_SOFT_RESET))
- tcpm_set_state_cond(port, hard_reset_state(port), 0);
- else
- tcpm_set_state_cond(port, hard_reset_state(port),
- PD_T_SENDER_RESPONSE);
+ /*
+ * Power Delivery 3.0 Section 6.3.13
+ *
+ * A Soft_Reset Message Shall be targeted at a specific entity
+ * depending on the type of SOP* packet used.
+ */
+ if (port->tx_sop_type == TCPC_TX_SOP_PRIME) {
+ port->message_id_prime = 0;
+ port->rx_msgid_prime = -1;
+ tcpm_pd_send_control(port, PD_CTRL_SOFT_RESET, TCPC_TX_SOP_PRIME);
+ tcpm_set_state_cond(port, ready_state(port), PD_T_SENDER_RESPONSE);
+ } else {
+ port->message_id = 0;
+ port->rx_msgid = -1;
+ /* remove existing capabilities */
+ usb_power_delivery_unregister_capabilities(port->partner_source_caps);
+ port->partner_source_caps = NULL;
+ if (tcpm_pd_send_control(port, PD_CTRL_SOFT_RESET, TCPC_TX_SOP))
+ tcpm_set_state_cond(port, hard_reset_state(port), 0);
+ else
+ tcpm_set_state_cond(port, hard_reset_state(port),
+ PD_T_SENDER_RESPONSE);
+ }
break;
/* DR_Swap states */
case DR_SWAP_SEND:
- tcpm_pd_send_control(port, PD_CTRL_DR_SWAP);
- if (port->data_role == TYPEC_DEVICE || port->negotiated_rev > PD_REV20)
+ tcpm_pd_send_control(port, PD_CTRL_DR_SWAP, TCPC_TX_SOP);
+ if (port->data_role == TYPEC_DEVICE || port->negotiated_rev > PD_REV20) {
port->send_discover = true;
+ port->send_discover_prime = false;
+ }
tcpm_set_state_cond(port, DR_SWAP_SEND_TIMEOUT,
PD_T_SENDER_RESPONSE);
break;
case DR_SWAP_ACCEPT:
- tcpm_pd_send_control(port, PD_CTRL_ACCEPT);
- if (port->data_role == TYPEC_DEVICE || port->negotiated_rev > PD_REV20)
+ tcpm_pd_send_control(port, PD_CTRL_ACCEPT, TCPC_TX_SOP);
+ if (port->data_role == TYPEC_DEVICE || port->negotiated_rev > PD_REV20) {
port->send_discover = true;
+ port->send_discover_prime = false;
+ }
tcpm_set_state_cond(port, DR_SWAP_CHANGE_DR, 0);
break;
case DR_SWAP_SEND_TIMEOUT:
tcpm_swap_complete(port, -ETIMEDOUT);
port->send_discover = false;
+ port->send_discover_prime = false;
tcpm_ams_finish(port);
tcpm_set_state(port, ready_state(port), 0);
break;
break;
case FR_SWAP_SEND:
- if (tcpm_pd_send_control(port, PD_CTRL_FR_SWAP)) {
+ if (tcpm_pd_send_control(port, PD_CTRL_FR_SWAP, TCPC_TX_SOP)) {
tcpm_set_state(port, ERROR_RECOVERY, 0);
break;
}
break;
case FR_SWAP_SNK_SRC_SOURCE_VBUS_APPLIED:
tcpm_set_pwr_role(port, TYPEC_SOURCE);
- if (tcpm_pd_send_control(port, PD_CTRL_PS_RDY)) {
+ if (tcpm_pd_send_control(port, PD_CTRL_PS_RDY, TCPC_TX_SOP)) {
tcpm_set_state(port, ERROR_RECOVERY, 0);
break;
}
/* PR_Swap states */
case PR_SWAP_ACCEPT:
- tcpm_pd_send_control(port, PD_CTRL_ACCEPT);
+ tcpm_pd_send_control(port, PD_CTRL_ACCEPT, TCPC_TX_SOP);
tcpm_set_state(port, PR_SWAP_START, 0);
break;
case PR_SWAP_SEND:
- tcpm_pd_send_control(port, PD_CTRL_PR_SWAP);
+ tcpm_pd_send_control(port, PD_CTRL_PR_SWAP, TCPC_TX_SOP);
tcpm_set_state_cond(port, PR_SWAP_SEND_TIMEOUT,
PD_T_SENDER_RESPONSE);
break;
* supply is turned off"
*/
tcpm_set_pwr_role(port, TYPEC_SINK);
- if (tcpm_pd_send_control(port, PD_CTRL_PS_RDY)) {
+ if (tcpm_pd_send_control(port, PD_CTRL_PS_RDY, TCPC_TX_SOP)) {
tcpm_set_state(port, ERROR_RECOVERY, 0);
break;
}
* Source."
*/
tcpm_set_pwr_role(port, TYPEC_SOURCE);
- tcpm_pd_send_control(port, PD_CTRL_PS_RDY);
+ tcpm_pd_send_control(port, PD_CTRL_PS_RDY, TCPC_TX_SOP);
tcpm_set_state(port, SRC_STARTUP, PD_T_SWAP_SRC_START);
break;
case VCONN_SWAP_ACCEPT:
- tcpm_pd_send_control(port, PD_CTRL_ACCEPT);
+ tcpm_pd_send_control(port, PD_CTRL_ACCEPT, TCPC_TX_SOP);
tcpm_ams_finish(port);
tcpm_set_state(port, VCONN_SWAP_START, 0);
break;
case VCONN_SWAP_SEND:
- tcpm_pd_send_control(port, PD_CTRL_VCONN_SWAP);
+ tcpm_pd_send_control(port, PD_CTRL_VCONN_SWAP, TCPC_TX_SOP);
tcpm_set_state(port, VCONN_SWAP_SEND_TIMEOUT,
PD_T_SENDER_RESPONSE);
break;
PD_T_VCONN_SOURCE_ON);
break;
case VCONN_SWAP_TURN_ON_VCONN:
- tcpm_set_vconn(port, true);
- tcpm_pd_send_control(port, PD_CTRL_PS_RDY);
- tcpm_set_state(port, ready_state(port), 0);
+ ret = tcpm_set_vconn(port, true);
+ tcpm_pd_send_control(port, PD_CTRL_PS_RDY, TCPC_TX_SOP);
+ /*
+ * USB PD 3.0 Section 6.4.4.3.1
+ *
+ * Note that a Cable Plug or VPD will not be ready for PD
+ * Communication until tVCONNStable after VCONN has been applied
+ */
+ if (!ret)
+ tcpm_set_state(port, VCONN_SWAP_SEND_SOFT_RESET,
+ PD_T_VCONN_STABLE);
+ else
+ tcpm_set_state(port, ready_state(port), 0);
break;
case VCONN_SWAP_TURN_OFF_VCONN:
tcpm_set_vconn(port, false);
tcpm_set_state(port, ready_state(port), 0);
break;
+ case VCONN_SWAP_SEND_SOFT_RESET:
+ tcpm_swap_complete(port, port->swap_status);
+ if (tcpm_can_communicate_sop_prime(port)) {
+ port->tx_sop_type = TCPC_TX_SOP_PRIME;
+ port->upcoming_state = SOFT_RESET_SEND;
+ tcpm_ams_start(port, SOFT_RESET_AMS);
+ } else {
+ tcpm_set_state(port, ready_state(port), 0);
+ }
+ break;
case DR_SWAP_CANCEL:
case PR_SWAP_CANCEL:
}
break;
case GET_STATUS_SEND:
- tcpm_pd_send_control(port, PD_CTRL_GET_STATUS);
+ tcpm_pd_send_control(port, PD_CTRL_GET_STATUS, TCPC_TX_SOP);
tcpm_set_state(port, GET_STATUS_SEND_TIMEOUT,
PD_T_SENDER_RESPONSE);
break;
tcpm_set_state(port, ready_state(port), 0);
break;
case GET_PPS_STATUS_SEND:
- tcpm_pd_send_control(port, PD_CTRL_GET_PPS_STATUS);
+ tcpm_pd_send_control(port, PD_CTRL_GET_PPS_STATUS, TCPC_TX_SOP);
tcpm_set_state(port, GET_PPS_STATUS_SEND_TIMEOUT,
PD_T_SENDER_RESPONSE);
break;
tcpm_set_state(port, ready_state(port), 0);
break;
case GET_SINK_CAP:
- tcpm_pd_send_control(port, PD_CTRL_GET_SINK_CAP);
+ tcpm_pd_send_control(port, PD_CTRL_GET_SINK_CAP, TCPC_TX_SOP);
tcpm_set_state(port, GET_SINK_CAP_TIMEOUT, PD_T_SENDER_RESPONSE);
break;
case GET_SINK_CAP_TIMEOUT:
/* Chunk state */
case CHUNK_NOT_SUPP:
- tcpm_pd_send_control(port, PD_CTRL_NOT_SUPP);
+ tcpm_pd_send_control(port, PD_CTRL_NOT_SUPP, TCPC_TX_SOP);
tcpm_set_state(port, port->pwr_role == TYPEC_SOURCE ? SRC_READY : SNK_READY, 0);
break;
+
+ /* Cable states */
+ case SRC_VDM_IDENTITY_REQUEST:
+ port->send_discover_prime = true;
+ port->tx_sop_type = TCPC_TX_SOP_PRIME;
+ mod_send_discover_delayed_work(port, 0);
+ port->upcoming_state = SRC_SEND_CAPABILITIES;
+ break;
+
default:
WARN(1, "Unexpected port state %d\n", port->state);
break;
goto unlock;
/* Send when the state machine is idle */
- if (port->state != SNK_READY || port->vdm_sm_running || port->send_discover)
+ if (port->state != SNK_READY || port->vdm_sm_running || port->send_discover ||
+ port->send_discover_prime)
goto resched;
port->upcoming_state = GET_SINK_CAP;
mutex_lock(&port->lock);
/* No need to send DISCOVER_IDENTITY anymore */
- if (!port->send_discover)
+ if (!port->send_discover && !port->send_discover_prime)
goto unlock;
if (port->data_role == TYPEC_DEVICE && port->negotiated_rev < PD_REV30) {
port->send_discover = false;
+ port->send_discover_prime = false;
goto unlock;
}
/* Retry if the port is not idle */
- if ((port->state != SRC_READY && port->state != SNK_READY) || port->vdm_sm_running) {
+ if ((port->state != SRC_READY && port->state != SNK_READY &&
+ port->state != SRC_VDM_IDENTITY_REQUEST) || port->vdm_sm_running) {
mod_send_discover_delayed_work(port, SEND_DISCOVER_RETRY_MS);
goto unlock;
}
- tcpm_send_vdm(port, USB_SID_PD, CMD_DISCOVER_IDENT, NULL, 0);
+ tcpm_send_vdm(port, USB_SID_PD, CMD_DISCOVER_IDENT, NULL, 0, port->tx_sop_type);
unlock:
mutex_unlock(&port->lock);
typec_port_register_altmodes(port->typec_port,
&tcpm_altmode_ops, port,
port->port_altmode, ALTMODE_DISCOVERY_MAX);
+ typec_port_register_cable_ops(port->port_altmode, ARRAY_SIZE(port->port_altmode),
+ &tcpm_cable_ops);
port->registered = true;
mutex_lock(&port->lock);
projects / thirdparty / linux.git / blobdiff