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usb: Link the ports to the connectors they are attached to

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Creating link to the USB Type-C connector for every new port
that is added when possible.

Signed-off-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Link: https://lore.kernel.org/r/20210407065555.88110-3-heikki.krogerus@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Heikki Krogerus 2021-04-07 09:55:53 +03:00 committed by Greg Kroah-Hartman
parent ae196ddb0d
commit 63cd786173
2 changed files with 12 additions and 0 deletions
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9
Documentation/ABI/testing/sysfs-bus-usb
View File

@ -255,6 +255,15 @@ Description:
is permitted, "u2" if only u2 is permitted, "u1_u2" if both u1 and
u2 are permitted.
What: /sys/bus/usb/devices/.../(hub interface)/portX/connector
Date: April 2021
Contact: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Description:
Link to the USB Type-C connector when available. This link is
only created when USB Type-C Connector Class is enabled, and
only if the system firmware is capable of describing the
connection between a port and its connector.
What: /sys/bus/usb/devices/.../power/usb2_lpm_l1_timeout
Date: May 2013
Contact: Mathias Nyman <mathias.nyman@linux.intel.com>

3
drivers/usb/core/port.c
View File

@ -9,6 +9,7 @@
#include <linux/slab.h>
#include <linux/pm_qos.h>
#include <linux/usb/typec.h>
#include "hub.h"
@ -576,6 +577,7 @@ int usb_hub_create_port_device(struct usb_hub *hub, int port1)
}
find_and_link_peer(hub, port1);
typec_link_port(&port_dev->dev);
/*
* Enable runtime pm and hold a refernce that hub_configure()
@ -619,5 +621,6 @@ void usb_hub_remove_port_device(struct usb_hub *hub, int port1)
peer = port_dev->peer;
if (peer)
unlink_peers(port_dev, peer);
typec_unlink_port(&port_dev->dev);
device_unregister(&port_dev->dev);
}