Re: [PATCH v4 0/6] usb: Linking ports to their Type-C connectors

2021-04-01 Thread Heikki Krogerus
On Thu, Apr 01, 2021 at 09:53:41AM +0300, Heikki Krogerus wrote:
> Hi,
> 
> One more version. I used #ifdef when I should have used #if
> IS_DEFINED(). Thanks Guenter for pointing that out.
> 
> I'm sending this version right away because of the holidays. I'm not
> changing anything else except that one fix.

I have to prepare one more version.

Unfortunately we can not use IS_DEFINED() either. I have to use
IS_REACHABLE() instead.

I'm sorry about this.


thanks,

-- 
heikki


[PATCH v4 0/6] usb: Linking ports to their Type-C connectors

2021-04-01 Thread Heikki Krogerus
Hi,

One more version. I used #ifdef when I should have used #if
IS_DEFINED(). Thanks Guenter for pointing that out.

I'm sending this version right away because of the holidays. I'm not
changing anything else except that one fix.


v3: cover letter:

Third version: ifdefs now in the header files as they should be.


v2 cover letter:

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 | 277 
 include/linux/usb.h |   9 +
 include/linux/usb/typec.h   |  13 ++
 13 files changed, 495 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

-- 
2.30.2