usb: typec: Separate the definitions for data and power roles

USB Type-C specification v1.2 separated the power and data
roles more clearly. Dual-Role-Data term was introduced, and
the meaning of DRP was changed from "Dual-Role-Port" to
"Dual-Role-Power".

In order to allow the port drivers to describe the
capabilities of the ports more clearly according to the
newest specifications, introducing separate definitions for
the data roles.

Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/usb/typec/class.c b/drivers/usb/typec/class.c
index 2620a694704f5f48c181e263ce4953e806c81457..53df10df2f9d2f08f2616ce1a168353ec59ea8a8 100644 (file)
--- a/drivers/usb/typec/class.c
+++ b/drivers/usb/typec/class.c
@@ -282,10 +282,10 @@ typec_altmode_roles_show(struct device *dev, struct device_attribute *attr,
        ssize_t ret;
 
        switch (mode->roles) {
-       case TYPEC_PORT_DFP:
+       case TYPEC_PORT_SRC:
                ret = sprintf(buf, "source\n");
                break;
-       case TYPEC_PORT_UFP:
+       case TYPEC_PORT_SNK:
                ret = sprintf(buf, "sink\n");
                break;
        case TYPEC_PORT_DRP:
@@ -797,14 +797,14 @@ static const char * const typec_data_roles[] = {
 };
 
 static const char * const typec_port_types[] = {
-       [TYPEC_PORT_DFP] = "source",
-       [TYPEC_PORT_UFP] = "sink",
+       [TYPEC_PORT_SRC] = "source",
+       [TYPEC_PORT_SNK] = "sink",
        [TYPEC_PORT_DRP] = "dual",
 };
 
 static const char * const typec_port_types_drp[] = {
-       [TYPEC_PORT_DFP] = "dual [source] sink",
-       [TYPEC_PORT_UFP] = "dual source [sink]",
+       [TYPEC_PORT_SRC] = "dual [source] sink",
+       [TYPEC_PORT_SNK] = "dual source [sink]",
        [TYPEC_PORT_DRP] = "[dual] source sink",
 };
 
@@ -875,9 +875,7 @@ static ssize_t data_role_store(struct device *dev,
                return ret;
 
        mutex_lock(&port->port_type_lock);
-       if (port->port_type != TYPEC_PORT_DRP) {
-               dev_dbg(dev, "port type fixed at \"%s\"",
-                            typec_port_types[port->port_type]);
+       if (port->cap->data != TYPEC_PORT_DRD) {
                ret = -EOPNOTSUPP;
                goto unlock_and_ret;
        }
@@ -897,7 +895,7 @@ static ssize_t data_role_show(struct device *dev,
 {
        struct typec_port *port = to_typec_port(dev);
 
-       if (port->cap->type == TYPEC_PORT_DRP)
+       if (port->cap->data == TYPEC_PORT_DRD)
                return sprintf(buf, "%s\n", port->data_role == TYPEC_HOST ?
                               "[host] device" : "host [device]");
 
@@ -1328,7 +1326,6 @@ struct typec_port *typec_register_port(struct device *parent,
                                       const struct typec_capability *cap)
 {
        struct typec_port *port;
-       int role;
        int ret;
        int id;
 
@@ -1354,21 +1351,36 @@ struct typec_port *typec_register_port(struct device *parent,
                goto err_mux;
        }
 
-       if (cap->type == TYPEC_PORT_DFP)
-               role = TYPEC_SOURCE;
-       else if (cap->type == TYPEC_PORT_UFP)
-               role = TYPEC_SINK;
-       else
-               role = cap->prefer_role;
-
-       if (role == TYPEC_SOURCE) {
-               port->data_role = TYPEC_HOST;
+       switch (cap->type) {
+       case TYPEC_PORT_SRC:
                port->pwr_role = TYPEC_SOURCE;
                port->vconn_role = TYPEC_SOURCE;
-       } else {
-               port->data_role = TYPEC_DEVICE;
+               break;
+       case TYPEC_PORT_SNK:
                port->pwr_role = TYPEC_SINK;
                port->vconn_role = TYPEC_SINK;
+               break;
+       case TYPEC_PORT_DRP:
+               if (cap->prefer_role != TYPEC_NO_PREFERRED_ROLE)
+                       port->pwr_role = cap->prefer_role;
+               else
+                       port->pwr_role = TYPEC_SINK;
+               break;
+       }
+
+       switch (cap->data) {
+       case TYPEC_PORT_DFP:
+               port->data_role = TYPEC_HOST;
+               break;
+       case TYPEC_PORT_UFP:
+               port->data_role = TYPEC_DEVICE;
+               break;
+       case TYPEC_PORT_DRD:
+               if (cap->prefer_role == TYPEC_SOURCE)
+                       port->data_role = TYPEC_HOST;
+               else
+                       port->data_role = TYPEC_DEVICE;
+               break;
        }
 
        port->id = id;

diff --git a/drivers/usb/typec/fusb302/fusb302.c b/drivers/usb/typec/fusb302/fusb302.c
index 06794c06330fb8e499d9d8d0753ad72ef63011cc..82bf7c0ed53c3638c64e2420abb02eaab84085f9 100644 (file)
--- a/drivers/usb/typec/fusb302/fusb302.c
+++ b/drivers/usb/typec/fusb302/fusb302.c
@@ -1219,6 +1219,7 @@ static const struct tcpc_config fusb302_tcpc_config = {
        .max_snk_mw = 15000,
        .operating_snk_mw = 2500,
        .type = TYPEC_PORT_DRP,
+       .data = TYPEC_PORT_DRD,
        .default_role = TYPEC_SINK,
        .alt_modes = NULL,
 };

diff --git a/drivers/usb/typec/tcpm.c b/drivers/usb/typec/tcpm.c
index 4c0fc5493d58b567787b1463ae953ba26ea44997..62e710bb6367c985087de6a5b1669a16ac73f818 100644 (file)
--- a/drivers/usb/typec/tcpm.c
+++ b/drivers/usb/typec/tcpm.c
@@ -345,7 +345,7 @@ static enum tcpm_state tcpm_default_state(struct tcpm_port *port)
                else if (port->tcpc->config->default_role == TYPEC_SINK)
                        return SNK_UNATTACHED;
                /* Fall through to return SRC_UNATTACHED */
-       } else if (port->port_type == TYPEC_PORT_UFP) {
+       } else if (port->port_type == TYPEC_PORT_SNK) {
                return SNK_UNATTACHED;
        }
        return SRC_UNATTACHED;
@@ -2179,7 +2179,7 @@ static inline enum tcpm_state unattached_state(struct tcpm_port *port)
                        return SRC_UNATTACHED;
                else
                        return SNK_UNATTACHED;
-       } else if (port->port_type == TYPEC_PORT_DFP) {
+       } else if (port->port_type == TYPEC_PORT_SRC) {
                return SRC_UNATTACHED;
        }
 
@@ -3469,11 +3469,11 @@ static int tcpm_port_type_set(const struct typec_capability *cap,
 
        if (!port->connected) {
                tcpm_set_state(port, PORT_RESET, 0);
-       } else if (type == TYPEC_PORT_UFP) {
+       } else if (type == TYPEC_PORT_SNK) {
                if (!(port->pwr_role == TYPEC_SINK &&
                      port->data_role == TYPEC_DEVICE))
                        tcpm_set_state(port, PORT_RESET, 0);
-       } else if (type == TYPEC_PORT_DFP) {
+       } else if (type == TYPEC_PORT_SRC) {
                if (!(port->pwr_role == TYPEC_SOURCE &&
                      port->data_role == TYPEC_HOST))
                        tcpm_set_state(port, PORT_RESET, 0);
@@ -3641,6 +3641,7 @@ struct tcpm_port *tcpm_register_port(struct device *dev, struct tcpc_dev *tcpc)
 
        port->typec_caps.prefer_role = tcpc->config->default_role;
        port->typec_caps.type = tcpc->config->type;
+       port->typec_caps.data = tcpc->config->data;
        port->typec_caps.revision = 0x0120;     /* Type-C spec release 1.2 */
        port->typec_caps.pd_revision = 0x0200;  /* USB-PD spec release 2.0 */
        port->typec_caps.dr_set = tcpm_dr_set;

diff --git a/drivers/usb/typec/tps6598x.c b/drivers/usb/typec/tps6598x.c
index 37a15c14a6c6fa5055ab695c5a61c75343f6b12a..8b8406867c02f1500917ae570369282c5f9b1328 100644 (file)
--- a/drivers/usb/typec/tps6598x.c
+++ b/drivers/usb/typec/tps6598x.c
@@ -393,31 +393,39 @@ static int tps6598x_probe(struct i2c_client *client)
        if (ret < 0)
                return ret;
 
+       tps->typec_cap.revision = USB_TYPEC_REV_1_2;
+       tps->typec_cap.pd_revision = 0x200;
+       tps->typec_cap.prefer_role = TYPEC_NO_PREFERRED_ROLE;
+       tps->typec_cap.pr_set = tps6598x_pr_set;
+       tps->typec_cap.dr_set = tps6598x_dr_set;
+
        switch (TPS_SYSCONF_PORTINFO(conf)) {
        case TPS_PORTINFO_SINK_ACCESSORY:
        case TPS_PORTINFO_SINK:
-               tps->typec_cap.type = TYPEC_PORT_UFP;
+               tps->typec_cap.type = TYPEC_PORT_SNK;
+               tps->typec_cap.data = TYPEC_PORT_UFP;
                break;
        case TPS_PORTINFO_DRP_UFP_DRD:
        case TPS_PORTINFO_DRP_DFP_DRD:
-               tps->typec_cap.dr_set = tps6598x_dr_set;
-               /* fall through */
+               tps->typec_cap.type = TYPEC_PORT_DRP;
+               tps->typec_cap.data = TYPEC_PORT_DRD;
+               break;
        case TPS_PORTINFO_DRP_UFP:
+               tps->typec_cap.type = TYPEC_PORT_DRP;
+               tps->typec_cap.data = TYPEC_PORT_UFP;
+               break;
        case TPS_PORTINFO_DRP_DFP:
-               tps->typec_cap.pr_set = tps6598x_pr_set;
                tps->typec_cap.type = TYPEC_PORT_DRP;
+               tps->typec_cap.data = TYPEC_PORT_DFP;
                break;
        case TPS_PORTINFO_SOURCE:
-               tps->typec_cap.type = TYPEC_PORT_DFP;
+               tps->typec_cap.type = TYPEC_PORT_SRC;
+               tps->typec_cap.data = TYPEC_PORT_DFP;
                break;
        default:
                return -ENODEV;
        }
 
-       tps->typec_cap.revision = USB_TYPEC_REV_1_2;
-       tps->typec_cap.pd_revision = 0x200;
-       tps->typec_cap.prefer_role = TYPEC_NO_PREFERRED_ROLE;
-
        tps->port = typec_register_port(&client->dev, &tps->typec_cap);
        if (IS_ERR(tps->port))
                return PTR_ERR(tps->port);

diff --git a/drivers/usb/typec/typec_wcove.c b/drivers/usb/typec/typec_wcove.c
index 2e990e0d917d1b27b329afdfb1f9e1a00d5c8971..19cca7f1b2c5c00a2a7e82902a3976d4b59f7809 100644 (file)
--- a/drivers/usb/typec/typec_wcove.c
+++ b/drivers/usb/typec/typec_wcove.c
@@ -572,6 +572,7 @@ static struct tcpc_config wcove_typec_config = {
        .operating_snk_mw = 15000,
 
        .type = TYPEC_PORT_DRP,
+       .data = TYPEC_PORT_DRD,
        .default_role = TYPEC_SINK,
 };
 

diff --git a/drivers/usb/typec/ucsi/ucsi.c b/drivers/usb/typec/ucsi/ucsi.c
index 69d544cfcd45a5a2ce77ada3ff428b2663657a89..bf0977fbd100a72b2384d52a91c114dbbf694813 100644 (file)
--- a/drivers/usb/typec/ucsi/ucsi.c
+++ b/drivers/usb/typec/ucsi/ucsi.c
@@ -592,11 +592,18 @@ static int ucsi_register_port(struct ucsi *ucsi, int index)
                return ret;
 
        if (con->cap.op_mode & UCSI_CONCAP_OPMODE_DRP)
-               cap->type = TYPEC_PORT_DRP;
+               cap->data = TYPEC_PORT_DRD;
        else if (con->cap.op_mode & UCSI_CONCAP_OPMODE_DFP)
-               cap->type = TYPEC_PORT_DFP;
+               cap->data = TYPEC_PORT_DFP;
        else if (con->cap.op_mode & UCSI_CONCAP_OPMODE_UFP)
-               cap->type = TYPEC_PORT_UFP;
+               cap->data = TYPEC_PORT_UFP;
+
+       if (con->cap.provider && con->cap.consumer)
+               cap->type = TYPEC_PORT_DRP;
+       else if (con->cap.provider)
+               cap->type = TYPEC_PORT_SRC;
+       else if (con->cap.consumer)
+               cap->type = TYPEC_PORT_SNK;
 
        cap->revision = ucsi->cap.typec_version;
        cap->pd_revision = ucsi->cap.pd_version;

diff --git a/include/linux/usb/tcpm.h b/include/linux/usb/tcpm.h
index ca1c0b57f03f951a47ad527fb21368b95d7b1dd8..5a5e1d8c5b65fe93e90bf67902221f699b5c31cc 100644 (file)
--- a/include/linux/usb/tcpm.h
+++ b/include/linux/usb/tcpm.h
@@ -91,6 +91,7 @@ struct tcpc_config {
        unsigned int operating_snk_mw;
 
        enum typec_port_type type;
+       enum typec_port_data data;
        enum typec_role default_role;
        bool try_role_hw;       /* try.{src,snk} implemented in hardware */
 

diff --git a/include/linux/usb/typec.h b/include/linux/usb/typec.h
index 2408e5c2ed913aeaacd19bcfbc4091398445a986..672b39bb0adcbc8eb1e11a40dcb5539b89faa84d 100644 (file)
--- a/include/linux/usb/typec.h
+++ b/include/linux/usb/typec.h
@@ -22,9 +22,15 @@ struct typec_port;
 struct fwnode_handle;
 
 enum typec_port_type {
+       TYPEC_PORT_SRC,
+       TYPEC_PORT_SNK,
+       TYPEC_PORT_DRP,
+};
+
+enum typec_port_data {
        TYPEC_PORT_DFP,
        TYPEC_PORT_UFP,
-       TYPEC_PORT_DRP,
+       TYPEC_PORT_DRD,
 };
 
 enum typec_plug_type {
@@ -186,10 +192,11 @@ struct typec_partner_desc {
 
 /*
  * struct typec_capability - USB Type-C Port Capabilities
- * @role: DFP (Host-only), UFP (Device-only) or DRP (Dual Role)
+ * @type: Supported power role of the port
+ * @data: Supported data role of the port
  * @revision: USB Type-C Specification release. Binary coded decimal
  * @pd_revision: USB Power Delivery Specification revision if supported
- * @prefer_role: Initial role preference
+ * @prefer_role: Initial role preference (DRP ports).
  * @accessory: Supported Accessory Modes
  * @sw: Cable plug orientation switch
  * @mux: Multiplexer switch for Alternate/Accessory Modes
@@ -205,6 +212,7 @@ struct typec_partner_desc {
  */
 struct typec_capability {
        enum typec_port_type    type;
+       enum typec_port_data    data;
        u16                     revision; /* 0120H = "1.2" */
        u16                     pd_revision; /* 0300H = "3.0" */
        int                     prefer_role;