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

[Kai-Heng Feng]

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(-)

-- 
2.32.0