On Mon, Nov 02, 2009 at 11:57:59AM +0100, ext Gupta, Ajay Kumar wrote: > > On Mon, Nov 02, 2009 at 09:51:13AM +0530, Gupta, Ajay Kumar wrote: > > > Is there any updated patch on cppi4.1 core also? > > > > Is there _any_ cppi4.1 core patch anywhere? Not according to google. > > Russell, > > Here is the latest version of cppi4.1 core. > http://patchwork.kernel.org/patch/46698/ > > > > > Another option is to create arch/arm/ti-common to place all TI > > platform's > > > common software, such as CPPI4.1 used both in DA8xx and AM3517. > > > > No thanks. I really don't see why we should allow TI to have yet more > > directories scattered throughout the tree that are out of place with > > existing conventions. > > > > And what is this CPPI thing anyway? > > > > http://acronyms.thefreedictionary.com/CPPI > > > > "Communications Port Programming Interface" seems to be about the best > > applicable one from that list! > > Yes, this is the correct one. > > > If it's a USB DMA device (from the patches I can find, that seems to be > > the case) then why can't it live in drivers/usb or drivers/dma ? > > CPPI4.1 DMA engine can be used either by USB or by Ethernet interface though > currently only USB is using it but in future even Ethernet devices may use it. > > Infact, there is a TI platform (not in mainline), where both USB and Ethernet interface is using CPPI4.1 DMA. you might want to provide support for it via drivers/dma and for the musb stuff, you just add the wrappers musb uses. See how tusb6010_omap.c uses OMAP's system dma which is also used by any other driver which requests a dma channel. -- balbi -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
