linux-kernel - Re: [RFC PATCH v2 0/7] typec: tcpm: Add sink side support for PPS

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Message-ID: <20171121133547.GA17418@kuha.fi.intel.com>
Date:   Tue, 21 Nov 2017 15:35:47 +0200
From:   Heikki Krogerus <heikki.krogerus@...ux.intel.com>
To:     Adam Thomson <Adam.Thomson.Opensource@...semi.com>
Cc:     Guenter Roeck <linux@...ck-us.net>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Sebastian Reichel <sre@...nel.org>,
        Hans de Goede <hdegoede@...hat.com>,
        Yueyao Zhu <yueyao.zhu@...il.com>,
        Rui Miguel Silva <rmfrfs@...il.com>,
        linux-usb@...r.kernel.org, linux-pm@...r.kernel.org,
        linux-kernel@...r.kernel.org, support.opensource@...semi.com
Subject: Re: [RFC PATCH v2 0/7] typec: tcpm: Add sink side support for PPS

Hi Adam,

On Tue, Nov 14, 2017 at 11:44:41AM +0000, Adam Thomson wrote:
> This patch set adds sink side support for the PPS feature introduced in the
> USB PD 3.0 specification.
> 
> The source PPS supply is represented using the Power Supply framework to provide
> access and control APIs for dealing with it's operating voltage and current,
> and switching between a standard PDO and PPS APDO operation. During standard PDO
> operation the voltage and current is read-only, but for APDO PPS these are
> writable as well to allow for control.
> 
> It should be noted that the keepalive for PPS is not handled within TCPM. The
> expectation is that the external user will be required to ensure re-requests
> occur regularly to ensure PPS remains and the source does not hard reset.
> 
> Changes in v2:
>  - Use USB_PD and usb_pd prefixes for macros and inline functions in headers.
>  - Negotiate spec revision of PD headers during initial contract agreement.
>  - New headers now use SPDX tags for referencing correct license.
> 
> NOTE: Code changes are based on linux-next tag 'next-20171114' to pick up
> the move out of staging of TCPM related code.
> 
> Adam Thomson (7):
>   typec: tcpm: Add PD Rev 3.0 definitions to PD header
>   typec: tcpm: Add ADO header for Alert message handling
>   typec: tcpm: Add SDB header for Status message handling
>   typec: tcpm: Add core support for sink side PPS
>   power: supply: Add type for USB PD PPS chargers
>   typec: tcpm: Represent source supply through power_supply class
>   typec: tcpm: Add support for sink PPS related messages
> 
>  drivers/power/supply/power_supply_sysfs.c |   2 +-
>  drivers/usb/typec/Kconfig                 |   1 +
>  drivers/usb/typec/fusb302/Kconfig         |   2 +-
>  drivers/usb/typec/fusb302/fusb302.c       |  63 +--
>  drivers/usb/typec/tcpm.c                  | 851 +++++++++++++++++++++++++++++-
>  include/linux/power_supply.h              |   1 +
>  include/linux/usb/pd.h                    | 174 +++++-
>  include/linux/usb/pd_ado.h                |  42 ++
>  include/linux/usb/pd_ext_sdb.h            |  31 ++
>  include/linux/usb/tcpm.h                  |   2 +-
>  10 files changed, 1071 insertions(+), 98 deletions(-)
>  create mode 100644 include/linux/usb/pd_ado.h
>  create mode 100644 include/linux/usb/pd_ext_sdb.h

These don't apply on top of Badhri's series:
http://www.spinics.net/lists/kernel/msg2649921.html


Thanks,

-- 
heikki