Hi Guenter, > -----Original Message----- > From: linux-usb-ow...@vger.kernel.org [mailto:linux-usb- > ow...@vger.kernel.org] On Behalf Of Guenter Roeck > Sent: Wednesday, August 24, 2016 5:11 AM > To: Felipe Balbi <felipe.ba...@linux.intel.com> > Cc: Chandra Sekhar Anagani <chandra.sekhar.anag...@intel.com>; Bruce > Ashfield <bruce.ashfi...@windriver.com>; Bin Gao <bin....@intel.com>; > Pranav Tipnis <pranav.tip...@intel.com>; Heikki Krogerus > <heikki.kroge...@linux.intel.com>; linux-kernel@vger.kernel.org; linux- > u...@vger.kernel.org; Guenter Roeck <gro...@chromium.org> > Subject: [RFC PATCH v3 1/2] usb: typec: USB Type-C Port Manager (tcpm) > > This driver implements the USB Type-C Power Delivery state machine > for both source and sink ports. Alternate mode support is not > fully implemented. > > The driver attaches to the USB Type-C class code implemented in > the following patches. > > usb: typec: add driver for Intel Whiskey Cove PMIC USB Type-C PHY > usb: USB Type-C connector class > > This driver only implements the state machine. Lower level drivers are > responsible for > - Reporting VBUS status and activating VBUS > - Setting CC lines and providing CC line status > - Setting line polarity > - Activating and deactivating VCONN > - Setting the current limit > - Activating and deactivating PD message transfers > - Sending and receiving PD messages > > The driver provides both a functional API as well as callbacks for > lower level drivers. > > Signed-off-by: Guenter Roeck <gro...@chromium.org> > ---
A specific question, if power sink wants to request a new power level after SNK_READY, how to handle it with this tcpm? Thanks Li Jun
