linux-kernel - [PATCH v5 0/3] usb: typec: ucsi: Adding support for UCSI 3.0

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Message-ID: <20240209223824.622869-1-abhishekpandit@chromium.org>
Date: Fri,  9 Feb 2024 14:37:29 -0800
From: Abhishek Pandit-Subedi <abhishekpandit@...omium.org>
To: Heikki Krogerus <heikki.krogerus@...ux.intel.com>,
	linux-usb@...r.kernel.org
Cc: pmalani@...omium.org,
	jthies@...gle.com,
	Abhishek Pandit-Subedi <abhishekpandit@...omium.org>,
	"Christian A. Ehrhardt" <lk@...e.de>,
	Dmitry Baryshkov <dmitry.baryshkov@...aro.org>,
	Fabrice Gasnier <fabrice.gasnier@...s.st.com>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Hans de Goede <hdegoede@...hat.com>,
	Neil Armstrong <neil.armstrong@...aro.org>,
	Rajaram Regupathy <rajaram.regupathy@...el.com>,
	Saranya Gopal <saranya.gopal@...el.com>,
	linux-kernel@...r.kernel.org
Subject: [PATCH v5 0/3] usb: typec: ucsi: Adding support for UCSI 3.0


Hi Heikki,

This series starts the work adding UCSI 3.0 support to the UCSI driver.

There's a couple of pieces to start here:
* Add version checks and limit read size on 1.2.
* Update Connector Status and Connector Capability structures.
* Expose Partner PD revision from Capability data.

These were tested against on a 6.6 kernel running a usermode PPM against
a Realtek Evaluation board.

One additional note: there are a lot more unaligned fields in UCSI now
and the struct definitions are getting a bit out of hand. We can discuss
alternate mechanisms for defining these structs in the patch that
changes these structures.

Thanks,
Abhishek

Changes in v5:
  - Change min_t to clamp

Changes in v4:
  - Added missing Tested-By tags from v1 and reviewed-by tags.
  - Fix BCD translation of PD Major Rev
  - Replace IS_MIN_VERSION macro and just compare version directly.

Changes in v3:
  - Change include to asm/unaligned.h and reorder include.

Changes in v2:
  - Changed log message to DEBUG
  - Formatting changes and update macro to use brackets.
  - Fix incorrect guard condition when checking connector capability.

Abhishek Pandit-Subedi (3):
  usb: typec: ucsi: Limit read size on v1.2
  usb: typec: ucsi: Update connector cap and status
  usb: typec: ucsi: Get PD revision for partner

 drivers/usb/typec/ucsi/ucsi.c | 49 +++++++++++++++++++++++--
 drivers/usb/typec/ucsi/ucsi.h | 67 ++++++++++++++++++++++++++++++++---
 2 files changed, 110 insertions(+), 6 deletions(-)

-- 
2.43.0.687.g38aa6559b0-goog