[PATCH v2 0/6] usb: Linking ports to their Type-C connectors

Heikki Krogerus
2021-03-29T09:05:20Z

Hi,

This is the second version of this series. The "Iterator for ports"
patch is now moved to the end of the series (5/6).

I'm now using usb_for_each_dev() in usb_for_each_port like Alan
suggested, and I'm now using usb_port_peer_mutex to lock the ports
while we're dealing with them in __each_hub().

The original cover letter:

Adding a simple function typec_link_port() that can be used to create
a symlink "connector" that points to the USB Type-C connector of a
port. It is used with USB ports initially, but hopefully later also
with other things like DisplayPorts.

Being able to see which connector is connected to a port is important
in general, but it is really important when for example the data or
power role of a device needs to swapped. The user probable wants to
know which USB device is disconnected if role swap on a USB Type-C
connector is executed.

Hope these are OK.

thanks,

Heikki Krogerus (6):
usb: typec: Organize the private headers properly
usb: typec: Declare the typec_class static
usb: typec: Port mapping utility
usb: Link the ports to the connectors they are attached to
usb: Iterator for ports
usb: typec: Link all ports during connector registration

Documentation/ABI/testing/sysfs-bus-usb | 9 +
drivers/usb/core/port.c | 3 +
drivers/usb/core/usb.c | 46 ++++
drivers/usb/typec/Makefile | 2 +-
drivers/usb/typec/bus.c | 2 +
drivers/usb/typec/bus.h | 19 +-
drivers/usb/typec/class.c | 101 +++------
drivers/usb/typec/class.h | 85 +++++++
drivers/usb/typec/mux.c | 4 +-
drivers/usb/typec/mux.h | 21 ++
drivers/usb/typec/port-mapper.c | 280 ++++++++++++++++++++++++
include/linux/usb.h | 1 +
include/linux/usb/typec.h | 13 ++
13 files changed, 490 insertions(+), 96 deletions(-)
create mode 100644 drivers/usb/typec/class.h
create mode 100644 drivers/usb/typec/mux.h
create mode 100644 drivers/usb/typec/port-mapper.c

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2.30.2