usb: typec: Add sysfs node to show cc orientation (75f81a7f) · Commits · 戴 / test

Documentation/ABI/testing/sysfs-class-typec

+9 −0

Original line number	Diff line number	Diff line
		@@ -108,6 +108,15 @@ Contact: Heikki Krogerus <heikki.krogerus@linux.intel.com>
		Description:
		Revision number of the supported USB Type-C specification.

		What: /sys/class/typec/<port>/orientation
		Date: February 2020
		Contact: Badhri Jagan Sridharan <badhri@google.com>
		Description:
		Indicates the active orientation of the Type-C connector.
		Valid values:
		- "normal": CC1 orientation
		- "reverse": CC2 orientation
		- "unknown": Orientation cannot be determined.

		USB Type-C partner devices (eg. /sys/class/typec/port0-partner/)

+26 −0

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		@@ -1244,6 +1244,25 @@ static ssize_t usb_power_delivery_revision_show(struct device *dev,
		}
		static DEVICE_ATTR_RO(usb_power_delivery_revision);

		static ssize_t orientation_show(struct device *dev,
		struct device_attribute *attr,
		char *buf)
		{
		struct typec_port *p = to_typec_port(dev);
		enum typec_orientation orientation = typec_get_orientation(p);

		switch (orientation) {
		case TYPEC_ORIENTATION_NORMAL:
		return sprintf(buf, "%s\n", "normal");
		case TYPEC_ORIENTATION_REVERSE:
		return sprintf(buf, "%s\n", "reverse");
		case TYPEC_ORIENTATION_NONE:
		default:
		return sprintf(buf, "%s\n", "unknown");
		}
		}
		static DEVICE_ATTR_RO(orientation);

		static struct attribute *typec_attrs[] = {
		&dev_attr_data_role.attr,
		&dev_attr_power_operation_mode.attr,
		@@ -1254,6 +1273,7 @@ static struct attribute *typec_attrs[] = {
		&dev_attr_usb_typec_revision.attr,
		&dev_attr_vconn_source.attr,
		&dev_attr_port_type.attr,
		&dev_attr_orientation.attr,
		NULL,
		};

		@@ -1283,6 +1303,10 @@ static umode_t typec_attr_is_visible(struct kobject *kobj,
		return 0;
		if (port->cap->type != TYPEC_PORT_DRP)
		return 0444;
		} else if (attr == &dev_attr_orientation.attr) {
		if (port->cap->orientation_aware)
		return 0444;
		return 0;
		}

		return attr->mode;
		@@ -1493,6 +1517,8 @@ int typec_set_orientation(struct typec_port *port,
		}

		port->orientation = orientation;
		sysfs_notify(&port->dev.kobj, NULL, "orientation");
		kobject_uevent(&port->dev.kobj, KOBJ_CHANGE);

		return 0;
		}

+1 −0

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		@@ -4742,6 +4742,7 @@ struct tcpm_port tcpm_register_port(struct device dev, struct tcpc_dev *tcpc)
		port->typec_caps.pd_revision = 0x0300; /* USB-PD spec release 3.0 */
		port->typec_caps.driver_data = port;
		port->typec_caps.ops = &tcpm_ops;
		port->typec_caps.orientation_aware = 1;

		port->partner_desc.identity = &port->partner_ident;
		port->port_type = port->typec_caps.type;

+1 −0

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		@@ -211,6 +211,7 @@ struct typec_capability {
		u16 pd_revision; /* 0300H = "3.0" */
		int prefer_role;
		enum typec_accessory accessory[TYPEC_MAX_ACCESSORY];
		unsigned int orientation_aware:1;

		struct fwnode_handle *fwnode;
		void *driver_data;