[SRU] [Unstable/OEM-5.14] [PATCH 0/7] Improve USB Type-C support

[Kai-Heng Feng]

On Tue, Dec 14, 2021 at 11:06 PM Timo Aaltonen <tjaalton at ubuntu.com> wrote:
>
> On 16.11.2021 3.38, Kai-Heng Feng wrote:
> > BugLink: https://bugs.launchpad.net/bugs/1950974
> >
> > [Impact]
> > Error message "ucsi_acpi USBC000:00: GET_CONNECTOR_STATUS failed (-110)"
> > can be found on many systems.
> >
> > [Fix]
> > The main issue is that the PD firmware is unreliable, so use more
> > deterministic methods to make it reliable
> >
> > [Test]
> > The error message is gone. Also tried to plug/unplug USB Type-C power
> > cord, and the status are always reported correctly.
> >
> > [Where problems could occur]
> > This is quite a huge refactor, so regression can be expected. Only
> > target to unstable and latest OEM kernel to reduce risk we are taking.
> >
> > Heikki Krogerus (7):
> >    usb: typec: ucsi: Always cancel the command if PPM reports BUSY
> >      condition
> >    usb: typec: ucsi: Don't stop alt mode registration on busy condition
> >    usb: typec: ucsi: Add polling mechanism for partner tasks like alt
> >      mode checking
> >    usb: typec: ucsi: acpi: Reduce the command completion timeout
> >    usb: typec: ucsi: Check the partner alt modes always if there is PD
> >      contract
> >    usb: typec: ucsi: Read the PDOs in separate work
> >    usb: typec: ucsi: Better fix for missing unplug events issue
> >
> >   drivers/usb/typec/ucsi/ucsi.c      | 337 ++++++++++++++---------------
> >   drivers/usb/typec/ucsi/ucsi.h      |   3 +-
> >   drivers/usb/typec/ucsi/ucsi_acpi.c |   2 +-
> >   3 files changed, 167 insertions(+), 175 deletions(-)
> >
>
> What's the plan to get this in jammy/5.15? Remember that the upgrade
> path for oem-5.14 is hwe-5.15..

Isn't Jammy going to base on Unstable tree (5.15)?

Kai-Heng

>
>
> --
> t