On Tue, Nov 29, 2011 at 01:42:56PM +0100, Matthieu CASTET wrote: > Hi, > > Heikki Krogerus a écrit : > > Hi, > > > > > My goal on top of have the PHY split from OTG, is to have generic OTG > > stage machine as part of the OTG utility. This would be useful > > initially with the various ChipIdea UDC drivers that all seem to have > > the OTG state machine implemented separately, the Marvell one being > > the last to do this. The idea is to implement support for this generic > > state machine for the ci13xxx_udc, that we are planning to make the > > only driver for all the users of the ChipIdea UDC. > > Are you planning to improve ci13xxx_udc ? > AFAIK ci13xxx_udc lacks some features that are implemented by other drivers. > For example the fsl one handle endianness. > > Also it could be interesting to benchmark all the existing drivers to see which > one is better. In the old days ci13xxx_udc was very slow. > > > Also don't forget that there are different version of the core. For example > ci13xxx_udc doesn't support older core that doesn't have USBADRA. See > http://marc.info/?l=linux-usb&m=129906859817430&w=2 yeah, all of that needs to be sorted out and merged into one single implementation. While at that, make use of the newer ->udc_start()/->udc_stop() fields on the gadget_ops structure. -- balbi
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