[0/3] common SVDM version and VDO from dt

Message ID	20210126084544.682641-1-kyletso@google.com (mailing list archive)
Headers	show Return-Path: <linux-usb-owner@kernel.org> Sender: "kyletso via sendgmr" <kyletso@kyletso.ntc.corp.google.com> Date: Tue, 26 Jan 2021 16:45:41 +0800 Message-Id: <20210126084544.682641-1-kyletso@google.com> Mime-Version: 1.0 Subject: [PATCH 0/3] common SVDM version and VDO from dt From: Kyle Tso <kyletso@google.com> To: linux@roeck-us.net, heikki.krogerus@linux.intel.com, gregkh@linuxfoundation.org, robh+dt@kernel.org, hdegoede@redhat.com, badhri@google.com Cc: linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org, devicetree@vger.kernel.org, Kyle Tso <kyletso@google.com> Content-Type: text/plain; charset="UTF-8" Precedence: bulk
Series	common SVDM version and VDO from dt \| expand [0/3] common SVDM version and VDO from dt [1/3] usb: typec: Determine common SVDM Versions [2/3] dt-bindings: connector: Add SVDM VDO properties [3/3] usb: typec: tcpm: Get Sink VDO from fwnode

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20210126084544.682641-1-kyletso@google.com (mailing list archive)

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Sender: "kyletso via sendgmr" <kyletso@kyletso.ntc.corp.google.com>
Date: Tue, 26 Jan 2021 16:45:41 +0800
Message-Id: <20210126084544.682641-1-kyletso@google.com>
Mime-Version: 1.0
Subject: [PATCH 0/3] common SVDM version and VDO from dt
From: Kyle Tso <kyletso@google.com>
To: linux@roeck-us.net, heikki.krogerus@linux.intel.com,
        gregkh@linuxfoundation.org, robh+dt@kernel.org,
        hdegoede@redhat.com, badhri@google.com
Cc: linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org,
        devicetree@vger.kernel.org, Kyle Tso <kyletso@google.com>
Content-Type: text/plain; charset="UTF-8"
Precedence: bulk

Series

common SVDM version and VDO from dt | expand

Message

Kyle Tso Jan. 26, 2021, 8:45 a.m. UTC

The correct SVDM version we should use is the lowest common version             
between the port partners (plug) as stated in the PD3 Spec 6.4.4.2.3.           
It is determined in the Discovery Identity command so cache it and set          
the value to the version field of the VDM header in every later SVDM.           
                                                                                
Like the previous patch "usb: typec: tcpm: Create legacy PDOs for PD2           
connection"                                                                     
(https://lore.kernel.org/linux-usb/20210115163311.391332-1-kyletso@google.com/) 
The field is changed before sending it out of the port. I know this is          
not a good idea but at least it works.                                          
                                                                                
The other two patches are about to get the VDO from fwnode so as to give         
more flexibility.

Kyle Tso (3):
  usb: typec: Determine common SVDM Versions
  dt-bindings: connector: Add SVDM VDO properties
  usb: typec: tcpm: Get Sink VDO from fwnode

 drivers/usb/typec/altmodes/displayport.c |  6 ++-
 drivers/usb/typec/class.c                |  8 ++--
 drivers/usb/typec/tcpm/tcpm.c            | 56 ++++++++++++++++++++----
 drivers/usb/typec/ucsi/displayport.c     | 12 +++--
 include/dt-bindings/usb/pd.h             | 53 +++++++++++++++++++++-
 include/linux/usb/pd_vdo.h               | 40 ++++++++++++-----
 6 files changed, 147 insertions(+), 28 deletions(-)