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[v5,0/8] usb: typec: Implement UCSI driver for ChromeOS

Message ID 20240903163033.3170815-1-ukaszb@chromium.org
Headers show
Series usb: typec: Implement UCSI driver for ChromeOS | expand

Message

Łukasz Bartosik Sept. 3, 2024, 4:30 p.m. UTC 
This series implements a UCSI ChromeOS EC transport driver. 
The ChromeOS EC is expected to implement UCSI Platform Policy
Manager (PPM).

---
Changes in v5:
- Increased WRITE_TMO_MS to 5000.
- Replaced DRV_NAME with KBUILD_MODNAME.
- Added comments for WRITE_TMO_MS and MAX_EC_DATA_SIZE defines.
- Refactored cros_ucsi_async_control() to dynamically allocate memory
for a message to EC instead of allocating the message on stack.
- Replaced type names uint*_t with u*.
- Removed ret variable in cros_ucsi_work().
- Updated ucsi_operations interface to align with changes introduced in
  v6.11.
- Replaced test_bit() with test_and_clear_bit() in cros_ucsi_work().
- Added trace events in commit "usb: typec: cros_ec_ucsi: Add trace
  events".
- Added netlink in commit "usb: typec: cros_ec_ucsi: Add netlink"
for debugging and testing puropses. 
- Link to v4: https://lore.kernel.org/all/CAB2FV=6We88NrvN8NZYt8NkMFH9N_ZBGyUWVUpGwPdja2X_+NA@mail.gmail.com/T/

Changes in v4:
- Setup notifications before calling ucsi_register.
- Cancel work before destroying driver data.
- Link to v3: https://lore.kernel.org/r/20240403-public-ucsi-h-v3-0-f848e18c8ed2@chromium.org

Changes in v3:
- Moved driver from platform/chrome to usb/typec/ucsi.
- Used id_table instead of MODULE_ALIAS.
- Split EC header changes into seperate commit.
- Fixes from additional internal reviews and kernel bot warnings.
- Link to v2: https://lore.kernel.org/r/20240325-public-ucsi-h-v2-0-a6d716968bb1@chromium.org

Changes in v2:
- No code or commit message changes.
- Added drivers/platform/chrome maintainers for review.
- Link to v1: https://lore.kernel.org/r/20240325-public-ucsi-h-v1-0-7c7e888edc0a@chromium.org

Abhishek Pandit-Subedi (2):
  usb: typec: cros_ec_ucsi: Use complete instead of resume
  mfd: cros_ec: Don't load charger with UCSI

Pavan Holla (4):
  platform/chrome: Update ChromeOS EC header for UCSI
  platform/chrome: Update EC feature flags
  usb: typec: ucsi: Implement ChromeOS UCSI driver
  mfd: cros_ec: Load cros_ec_ucsi on supported ECs

Łukasz Bartosik (2):
  usb: typec: cros_ec_ucsi: Add trace events
  usb: typec: cros_ec_ucsi: Add netlink

 MAINTAINERS                                   |  10 +
 drivers/mfd/cros_ec_dev.c                     |  25 +-
 drivers/usb/typec/ucsi/Kconfig                |  13 +
 drivers/usb/typec/ucsi/Makefile               |   3 +
 drivers/usb/typec/ucsi/cros_ec_ucsi_main.c    | 351 ++++++++++++++++++
 drivers/usb/typec/ucsi/cros_ec_ucsi_nl.c      |  87 +++++
 drivers/usb/typec/ucsi/cros_ec_ucsi_nl.h      |  52 +++
 drivers/usb/typec/ucsi/cros_ec_ucsi_trace.h   |  92 +++++
 .../linux/platform_data/cros_ec_commands.h    |  54 ++-
 9 files changed, 683 insertions(+), 4 deletions(-)
 create mode 100644 drivers/usb/typec/ucsi/cros_ec_ucsi_main.c
 create mode 100644 drivers/usb/typec/ucsi/cros_ec_ucsi_nl.c
 create mode 100644 drivers/usb/typec/ucsi/cros_ec_ucsi_nl.h
 create mode 100644 drivers/usb/typec/ucsi/cros_ec_ucsi_trace.h