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Message-ID: <20160524093233.GA26874@kuha.fi.intel.com> Date: Tue, 24 May 2016 12:32:33 +0300 From: Heikki Krogerus <heikki.krogerus@...ux.intel.com> To: Oliver Neukum <oneukum@...e.com> Cc: Andy Shevchenko <andy.shevchenko@...il.com>, Rajaram R <rajaram.officemail@...il.com>, Felipe Balbi <felipe.balbi@...ux.intel.com>, Mathias Nyman <mathias.nyman@...ux.intel.com>, Greg KH <gregkh@...uxfoundation.org>, Guenter Roeck <linux@...ck-us.net>, linux-kernel@...r.kernel.org, linux-usb@...r.kernel.org Subject: Re: [RFC PATCHv2] usb: USB Type-C Connector Class On Mon, May 23, 2016 at 01:25:19PM +0200, Oliver Neukum wrote: > So for Alternate Modes we need on a high level the following features > > 1. discovery of available Alternate Modes > 2. selection of an Alternate Mode > 3. notification about entering an Alternate Mode > 4. triggering a reset > 5. notification about resets > > 6. discovery about the current role > 7. switching roles > 8. setting preferred roles (Try.SRC and Try.SNK) > > You covered 1. and 2. > 3. can be covered by specific drivers > 4. and 5. are not covered (and it makes no sense to tie it > to specific drivers) > > 6. and 7. is covered > 8. is not > > And 8. needs to be covered. It affects who selects the Alternate Mode. > You cannot tie it to USB and it doesn't fit with pure PD stuff. > > I like your API as it is now. But it is incomplete. OK, Got it. Thanks Oliver, -- heikki
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