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

[Timo Aaltonen]

On 15.12.2021 10.27, Timo Aaltonen wrote:
> On 15.12.2021 5.17, Kai-Heng Feng wrote:
>> 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)?
> 
> Jammy already has 5.15, unstable is tracking 5.16/5.17 at this point.

Ping?


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t