linux-kernel - [RFC PATCH 0/3] Type C partner power supply and PDO support.

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Date:   Thu,  2 Sep 2021 14:34:56 -0700
From:   Prashant Malani <pmalani@...omium.org>
To:     linux-kernel@...r.kernel.org, linux-usb@...r.kernel.org,
        linux-pm@...r.kernel.org, bleung@...omium.org,
        heikki.krogerus@...ux.intel.com, badhri@...gle.com
Cc:     Prashant Malani <pmalani@...omium.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Sebastian Reichel <sre@...nel.org>
Subject: [RFC PATCH 0/3] Type C partner power supply and PDO support.

Hi,

We'd like to expose the USB PD Power Source/Sink capabilities provided
by a partner (SOP) to userspace. Towards that end,
here is a short series which adds the capabilities to the power supply
class. We also add a function to the Type C connector class
to register a power supply device for a connected partner.

I'm sending this out as an RFC to get some initial feedback from the
relevant groups. Once we can settle on an approach, I can resend the
series with a sample implementation in the Chrome OS Type C port driver
(cros-ec-typec).

Thanks!

Prashant Malani (3):
  usb: pd: Increase max PDO objects to 13
  power: supply: Add support for PDOs props
  usb: typec: Add partner power registration call

 Documentation/ABI/testing/sysfs-class-power | 30 +++++++++++++++++++++
 drivers/power/supply/power_supply_sysfs.c   | 18 ++++++++++++-
 drivers/usb/typec/class.c                   | 18 ++++++++++++-
 drivers/usb/typec/class.h                   |  2 ++
 include/linux/power_supply.h                |  5 ++++
 include/linux/usb/pd.h                      |  8 +++++-
 include/linux/usb/typec.h                   |  5 ++++
 7 files changed, 83 insertions(+), 3 deletions(-)

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2.33.0.153.gba50c8fa24-goog