On 5/30/07, Tony Lindgren <[EMAIL PROTECTED]> wrote: > * David Brownell <[EMAIL PROTECTED]> [070529 16:04]: > > On Tuesday 29 May 2007, Tony Lindgren wrote: > > <snip snip snip snip> > > > > - Enable HNP "early" (later would be OK too); > > > - Offer to do HNP if the peripheral wants to use it > > > > Host doesn't know anything about "peripheral wants"; > > from its perspective, this is an blind offer to go > > down the "peripheral #2" path. > > > > > > > (Peripheral maintains _both_ b_hnp_enable set by > > > a_host and user preference on b_device on using > > > b_hnp_enable) > > > > That "user preference" is problematic. What do you > > end up with if that requirement for a user choice is > > removed ... ? > > How else do you tell when to use HNP then? It's the > b-device that needs to have that configured in, and > having HNP always enabled on b-device make sense either. > > I think it's designed to as a ways for b-device to > request being a host, so it's not supposed to be automatic. > If you want automatic host mode, then just use a-cable, > right?
Yeah.. that's right... from my understanding it should be a user-request. The "natural" way for changing roles would be a cable switching... but we're lazy enough to do it.. so the the b-device requests (the user requests) to become host during a small time-slice... we know it will start and finish. Don't we? > > Anyways, I'll play with an OPT and send patches in few > weeks, no need to do anything meanwhile unless somebody > else is also working on HNP stuff. > > > > > > ... deletia ... > > > > Glad to know the mechanisms are working. But right > > now I'm puzzled why musb_hdrc is misbehaving in > > host mode ... it's mangling descriptors as it reads > > them in. > > Which hardware? DaVinci or H4 with TUSB6010? At least > on N800 the host mode can go through testusb -a. > > Tony > -- Best Regards, Felipe Balbi [EMAIL PROTECTED] ------------------------------------------------------------------------- This SF.net email is sponsored by DB2 Express Download DB2 Express C - the FREE version of DB2 express and take control of your XML. No limits. Just data. Click to get it now. http://sourceforge.net/powerbar/db2/ _______________________________________________ linux-usb-devel@lists.sourceforge.net To unsubscribe, use the last form field at: https://lists.sourceforge.net/lists/listinfo/linux-usb-devel
