#include "bus.h"
#include "class.h"
+#include "pd.h"
static DEFINE_IDA(typec_index_ida);
}
EXPORT_SYMBOL_GPL(typec_partner_set_pd_revision);
+/**
+ * typec_partner_set_usb_power_delivery - Declare USB Power Delivery Contract.
+ * @partner: The partner device.
+ * @pd: The USB PD instance.
+ *
+ * This routine can be used to declare USB Power Delivery Contract with @partner
+ * by linking @partner to @pd which contains the objects that were used during the
+ * negotiation of the contract.
+ *
+ * If @pd is NULL, the link is removed and the contract with @partner has ended.
+ */
+int typec_partner_set_usb_power_delivery(struct typec_partner *partner,
+ struct usb_power_delivery *pd)
+{
+ int ret;
+
+ if (IS_ERR_OR_NULL(partner) || partner->pd == pd)
+ return 0;
+
+ if (pd) {
+ ret = usb_power_delivery_link_device(pd, &partner->dev);
+ if (ret)
+ return ret;
+ } else {
+ usb_power_delivery_unlink_device(partner->pd, &partner->dev);
+ }
+
+ partner->pd = pd;
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(typec_partner_set_usb_power_delivery);
+
/**
* typec_partner_set_num_altmodes - Set the number of available partner altmodes
* @partner: The partner to be updated.
/* ------------------------------------------------------------------------- */
/* USB Type-C ports */
+/**
+ * typec_port_set_usb_power_delivery - Assign USB PD for port.
+ * @port: USB Type-C port.
+ * @pd: USB PD instance.
+ *
+ * This routine can be used to set the USB Power Delivery Capabilities for @port
+ * that it will advertise to the partner.
+ *
+ * If @pd is NULL, the assignment is removed.
+ */
+int typec_port_set_usb_power_delivery(struct typec_port *port, struct usb_power_delivery *pd)
+{
+ int ret;
+
+ if (IS_ERR_OR_NULL(port) || port->pd == pd)
+ return 0;
+
+ if (pd) {
+ ret = usb_power_delivery_link_device(pd, &port->dev);
+ if (ret)
+ return ret;
+ } else {
+ usb_power_delivery_unlink_device(port->pd, &port->dev);
+ }
+
+ port->pd = pd;
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(typec_port_set_usb_power_delivery);
+
+static ssize_t select_usb_power_delivery_store(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t size)
+{
+ struct typec_port *port = to_typec_port(dev);
+ struct usb_power_delivery *pd;
+
+ if (!port->ops || !port->ops->pd_set)
+ return -EOPNOTSUPP;
+
+ pd = usb_power_delivery_find(buf);
+ if (!pd)
+ return -EINVAL;
+
+ return port->ops->pd_set(port, pd);
+}
+
+static ssize_t select_usb_power_delivery_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct typec_port *port = to_typec_port(dev);
+ struct usb_power_delivery **pds;
+ struct usb_power_delivery *pd;
+ int ret = 0;
+
+ if (!port->ops || !port->ops->pd_get)
+ return -EOPNOTSUPP;
+
+ pds = port->ops->pd_get(port);
+ if (!pds)
+ return 0;
+
+ for (pd = pds[0]; pd; pd++) {
+ if (pd == port->pd)
+ ret += sysfs_emit(buf + ret, "[%s] ", dev_name(&pd->dev));
+ else
+ ret += sysfs_emit(buf + ret, "%s ", dev_name(&pd->dev));
+ }
+
+ buf[ret - 1] = '\n';
+
+ return ret;
+}
+static DEVICE_ATTR_RW(select_usb_power_delivery);
+
+static struct attribute *port_attrs[] = {
+ &dev_attr_select_usb_power_delivery.attr,
+ NULL
+};
+
+static umode_t port_attr_is_visible(struct kobject *kobj, struct attribute *attr, int n)
+{
+ struct typec_port *port = to_typec_port(kobj_to_dev(kobj));
+
+ if (!port->pd || !port->ops || !port->ops->pd_get)
+ return 0;
+ if (!port->ops->pd_set)
+ return 0444;
+
+ return attr->mode;
+}
+
+static const struct attribute_group pd_group = {
+ .is_visible = port_attr_is_visible,
+ .attrs = port_attrs,
+};
+
static const char * const typec_orientations[] = {
[TYPEC_ORIENTATION_NONE] = "unknown",
[TYPEC_ORIENTATION_NORMAL] = "normal",
static const struct attribute_group *typec_groups[] = {
&typec_group,
+ &pd_group,
NULL
};
return ERR_PTR(ret);
}
+ ret = typec_port_set_usb_power_delivery(port, cap->pd);
+ if (ret) {
+ dev_err(&port->dev, "failed to link pd\n");
+ device_unregister(&port->dev);
+ return ERR_PTR(ret);
+ }
+
ret = typec_link_ports(port);
if (ret)
dev_warn(&port->dev, "failed to create symlinks (%d)\n", ret);
{
if (!IS_ERR_OR_NULL(port)) {
typec_unlink_ports(port);
+ typec_port_set_usb_power_delivery(port, NULL);
device_unregister(&port->dev);
}
}
if (ret)
goto err_unregister_mux_class;
+ ret = usb_power_delivery_init();
+ if (ret)
+ goto err_unregister_class;
+
return 0;
+err_unregister_class:
+ class_unregister(&typec_class);
+
err_unregister_mux_class:
class_unregister(&typec_mux_class);
static void __exit typec_exit(void)
{
+ usb_power_delivery_exit();
class_unregister(&typec_class);
ida_destroy(&typec_index_ida);
bus_unregister(&typec_bus);
struct fwnode_handle;
struct device;
+struct usb_power_delivery;
+
enum typec_port_type {
TYPEC_PORT_SRC,
TYPEC_PORT_SNK,
* @pr_set: Set Power Role
* @vconn_set: Source VCONN
* @port_type_set: Set port type
+ * @pd_get: Get available USB Power Delivery Capabilities.
+ * @pd_set: Set USB Power Delivery Capabilities.
*/
struct typec_operations {
int (*try_role)(struct typec_port *port, int role);
int (*vconn_set)(struct typec_port *port, enum typec_role role);
int (*port_type_set)(struct typec_port *port,
enum typec_port_type type);
+ struct usb_power_delivery **(*pd_get)(struct typec_port *port);
+ int (*pd_set)(struct typec_port *port, struct usb_power_delivery *pd);
};
enum usb_pd_svdm_ver {
* @accessory: Supported Accessory Modes
* @fwnode: Optional fwnode of the port
* @driver_data: Private pointer for driver specific info
+ * @pd: Optional USB Power Delivery Support
* @ops: Port operations vector
*
* Static capabilities of a single USB Type-C port.
struct fwnode_handle *fwnode;
void *driver_data;
+ struct usb_power_delivery *pd;
+
const struct typec_operations *ops;
};
enum usb_pd_svdm_ver svdm_version);
int typec_get_negotiated_svdm_version(struct typec_port *port);
+int typec_port_set_usb_power_delivery(struct typec_port *port, struct usb_power_delivery *pd);
+int typec_partner_set_usb_power_delivery(struct typec_partner *partner,
+ struct usb_power_delivery *pd);
+
#endif /* __LINUX_USB_TYPEC_H */