[0/9] platform/chrome: Type-C switch driver and Type-C framework updates

Message

Prashant Malani June 29, 2022, 11:32 p.m. UTC

This series introduces a retimer class to the USB Type-C framework,
It also introduces a Chrome EC (Embedded Controller) switch driver which
registers the aforementioned retimer switches as well as mode-switches.

Patch 1 and 2 introduce the retimer class and associated functions to
the Type-C common code.

Patches 3-7 add the cros-typec-switch driver

Patches 8-9 update cros-ec-typec to get and use retimer switch handles

Submission suggestion (as always, open to better suggestions):
- Patch 1 and 2 can go through the USB repo.
- Patch 3-9 can go through the chrome-platform repo. Since they depend
  on patches 1 and 2, we can create an "topic branch" off of
  usb-next once Patch 1 and 2 are submitted, and then apply Patches 3-9
  on top of that "topic branch" before merging it back into
  chrome-platform's for-next branch

Prashant Malani (9):
  usb: typec: Add support for retimers
  usb: typec: Add retimer handle to port
  platform/chrome: Add Type-C mux set command definitions
  platform/chrome: cros_typec_switch: Add switch driver
  platform/chrome: cros_typec_switch: Set EC retimer
  platform/chrome: cros_typec_switch: Add event check
  platform/chrome: cros_typec_switch: Register mode switches
  platform/chrome: cros_ec_typec: Cleanup switch handle return paths
  platform/chrome: cros_ec_typec: Get retimer handle

 MAINTAINERS                                   |   1 +
 drivers/platform/chrome/Kconfig               |  11 +
 drivers/platform/chrome/Makefile              |   1 +
 drivers/platform/chrome/cros_ec_typec.c       |  50 ++-
 drivers/platform/chrome/cros_typec_switch.c   | 332 ++++++++++++++++++
 drivers/usb/typec/Makefile                    |   2 +-
 drivers/usb/typec/class.c                     |  17 +-
 drivers/usb/typec/class.h                     |   2 +
 drivers/usb/typec/retimer.c                   | 168 +++++++++
 drivers/usb/typec/retimer.h                   |  15 +
 .../linux/platform_data/cros_ec_commands.h    |  18 +
 include/linux/usb/typec_retimer.h             |  45 +++
 12 files changed, 653 insertions(+), 9 deletions(-)
 create mode 100644 drivers/platform/chrome/cros_typec_switch.c
 create mode 100644 drivers/usb/typec/retimer.c
 create mode 100644 drivers/usb/typec/retimer.h
 create mode 100644 include/linux/usb/typec_retimer.h