linux-kernel - [PATCH v2 0/3] usb: typec: Implement UCSI driver for ChromeOS

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Message-Id: <20240325-public-ucsi-h-v2-0-a6d716968bb1@chromium.org>
Date: Mon, 25 Mar 2024 23:42:24 +0000
From: Pavan Holla <pholla@...omium.org>
To: Greg Kroah-Hartman <gregkh@...uxfoundation.org>, 
 Heikki Krogerus <heikki.krogerus@...ux.intel.com>, 
 Benson Leung <bleung@...omium.org>, Tzung-Bi Shih <tzungbi@...nel.org>, 
 Guenter Roeck <groeck@...omium.org>
Cc: linux-kernel@...r.kernel.org, linux-usb@...r.kernel.org, 
 Abhishek Pandit-Subedi <abhishekpandit@...omium.org>, 
 chrome-platform@...ts.linux.dev, Pavan Holla <pholla@...omium.org>
Subject: [PATCH v2 0/3] usb: typec: Implement UCSI driver for ChromeOS

We are developing a UCSI ChromeOS EC transport driver. The ChromeOS EC
implements a UCSI PPM. This driver is being developed in
drivers/platform/chrome since

1) Most other drivers which depend on ChromeOS EC reside there.

2) Our architecture might undergo a few revisions rapidly, so
   platform/chrome seems like a good place while we finalize our
   design.

This patch series creates a public include/usb/ucsi.h that can be used
by transport drivers outside drivers/usb/typec/ucsi. Then, we use this
interface and ChromeOS EC host commands to send UCSI commands in
drivers/platform/chrome/cros_ec_ucsi.c.

Signed-off-by: Pavan Holla <pholla@...omium.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

---
Pavan Holla (3):
      usb: typec: ucsi: Provide interface for UCSI transport
      usb: typec: ucsi: Import interface for UCSI transport
      platform/chrome: cros_ec_ucsi: Implement UCSI PDC driver

 MAINTAINERS                                    |   1 +
 drivers/platform/chrome/Kconfig                |  14 ++
 drivers/platform/chrome/Makefile               |   1 +
 drivers/platform/chrome/cros_ec_ucsi.c         | 247 +++++++++++++++++++++++++
 drivers/usb/typec/ucsi/ucsi.h                  |  54 +-----
 include/linux/platform_data/cros_ec_commands.h |  19 ++
 include/linux/usb/ucsi.h                       |  66 +++++++
 7 files changed, 349 insertions(+), 53 deletions(-)
---
base-commit: 4cece764965020c22cff7665b18a012006359095
change-id: 20240325-public-ucsi-h-3ecee4106a58

Best regards,
-- 
Pavan Holla <pholla@...omium.org>