On Wed, Jul 27, 2011 at 05:58:26AM -0700, jacob pan wrote: > On Wed, 27 Jul 2011 14:29:05 +0200 > Michal Nazarewicz <mina86@xxxxxxxxxx> wrote: > > > On Wed, 27 Jul 2011 14:17:28 +0200, jacob pan > > <jacob.jun.pan@xxxxxxxxx> wrote: > > > my goal is to inform userspace the connection status of otg port > > > such that user can make a decision on which gadget role he wants to > > > use for the device. It seems these ffs_data_xxx functions cannot > > > definitively tell the connection state. I guess i may have to add > > > uevents to the UDC driver or OTG transcriver driver. But it would > > > not be a generic solution as functionfs. if all you want to do is notify cable connection, just notify VBUS from the transceiver. If VBUS is on, your cable is connected to a host PC. If ID IRQ is triggered (instead of VBUS) then you're supposed to be host. -- balbi
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