linux-kernel - [PATCH 00/10] platform/chrome: cros_ec

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Date:   Wed, 28 Dec 2022 00:45:03 +0000
From:   Prashant Malani <pmalani@...omium.org>
To:     linux-kernel@...r.kernel.org, chrome-platform@...ts.linux.dev
Cc:     heikki.krogerus@...ux.intel.com,
        Prashant Malani <pmalani@...omium.org>,
        Benson Leung <bleung@...omium.org>,
        Daisuke Nojiri <dnojiri@...omium.org>,
        "Dustin L. Howett" <dustin@...ett.net>,
        Evan Green <evgreen@...omium.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Guenter Roeck <groeck@...omium.org>,
        "Gustavo A. R. Silva" <gustavoars@...nel.org>,
        Kees Cook <keescook@...omium.org>,
        Lee Jones <lee.jones@...aro.org>, Lee Jones <lee@...nel.org>,
        Sebastian Reichel <sebastian.reichel@...labora.com>,
        Stephen Boyd <swboyd@...omium.org>,
        Tinghan Shen <tinghan.shen@...iatek.com>,
        Tzung-Bi Shih <tzungbi@...nel.org>,
        Xiang wangx <wangxiang@...rlc.com>
Subject: [PATCH 00/10] platform/chrome: cros_ec_typec: VDM support

This series adds support for sending and receiving USB PD Vendor
Defined Messages (VDMs) between the Application Processor's Type-C
ports and connected peripherals.

Thir enables the Application processor to enter alternate modes and
process VDMs directly, instead of relying on state machines that exist
inside of co-processors like the ChromeOS Embedded Controller (EC).

Patch 1/10 reverts an incorrect EC header modification.
Patch 2/10 to 5/10 update headers and existing Type-C structs to
accommodate the VDM code.
Patch 6/10 and 7/10 prepare the Type-C driver to have more than 1 file.
Patch 8/10 to 10/10 introduce the VDM functionality.

Patch submissions suggestion (if approved):
- Even though Patch 1 touches drivers/mfd, it would be better to take
  the entire series through the cbrome-platform branch, to avoid
  cross-dependencies across maintainer trees.


Prashant Malani (10):
  Revert "mfd: cros_ec: Add SCP Core-1 as a new CrOS EC MCU"
  platform_chrome: cros_ec: Add Type-C VDM defines
  platform/chrome: cros_ec_typec: Stash port driver info
  platform/chrome: cros_ec_typec: Set port alt mode drvdata
  platform/chrome: cros_ec_typec: Update port DP VDO
  platform/chrome: cros_ec_typec: Move structs to header
  platform/chrome: cros_ec_typec: Alter module name with hyphens
  platform/chrome: cros_ec_typec: Add initial VDM support
  platform/chrome: cros_typec_vdm: Add VDM reply support
  platform/chrome: cros_typec_vdm: Add VDM send support

 MAINTAINERS                                   |   3 +-
 drivers/mfd/cros_ec_dev.c                     |   5 -
 drivers/platform/chrome/Kconfig               |   2 +-
 drivers/platform/chrome/Makefile              |   3 +-
 drivers/platform/chrome/cros_ec_typec.c       |  91 +++------------
 drivers/platform/chrome/cros_ec_typec.h       |  85 ++++++++++++++
 drivers/platform/chrome/cros_typec_vdm.c      | 106 ++++++++++++++++++
 drivers/platform/chrome/cros_typec_vdm.h      |  12 ++
 .../linux/platform_data/cros_ec_commands.h    |  53 ++++++++-
 include/linux/platform_data/cros_ec_proto.h   |   1 -
 10 files changed, 276 insertions(+), 85 deletions(-)
 create mode 100644 drivers/platform/chrome/cros_ec_typec.h
 create mode 100644 drivers/platform/chrome/cros_typec_vdm.c
 create mode 100644 drivers/platform/chrome/cros_typec_vdm.h

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2.39.0.314.g84b9a713c41-goog