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

Message

Heikki Krogerus March 29, 2021, 8:44 a.m. UTC

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