From mboxrd@z Thu Jan 1 00:00:00 1970 From: Arnd Bergmann Subject: Re: [RFC 0/1] Platform driver support for 'amd5536udc' driver Date: Fri, 06 Jan 2017 12:20:39 +0100 Message-ID: <6422487.mhqDBHHcCr@wuerfel> References: <1483604597-26160-1-git-send-email-raviteja.garimella@broadcom.com> <1861880.7pouM4E6RB@wuerfel> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7Bit Return-path: In-Reply-To: Sender: linux-usb-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: Raviteja Garimella Cc: Rob Herring , Mark Rutland , Greg Kroah-Hartman , Felipe Balbi , devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, BCM Kernel Feedback , linux-usb-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, John Youn List-Id: devicetree@vger.kernel.org On Friday, January 6, 2017 12:29:12 PM CET Raviteja Garimella wrote: > Hi Arnd, > > On Fri, Jan 6, 2017 at 3:33 AM, Arnd Bergmann wrote: > > On Thursday, January 5, 2017 1:53:16 PM CET Raviteja Garimella wrote: > >> The UDC is based on Synopsys Designware core USB (2.0) Device controller > >> IP. > > ... > >> This is a request for comments from maintainers/others regarding approach > >> on whether to have 2 different drivers (one each for AMD and Broadcom) > >> with a common library (3 files in total), or have a single driver like > >> it's done in this patch and have the driver filename changed to some > >> common name based on ther underlying IP, like snps_udc.c. > > > > I have not looked at the code at all, so sorry for my ignorance, but > > isn't the IP block you describe the one that drivers/usb/dwc2/ is for? > > Could you add support for the Broadcom hardware there instead? > > The current driver I submitted is for a different Synopsys IP (USB > Device Controller IP, > not the HS OTG). It's confirmed by John Youn (from Synopsys) earlier. > Ok, sounds fine the. I'd suggest taking the current driver than and splitting out the pci_driver front-end into a separate module that calls exported symbols of the main driver, with the new platform driver in a third file that also calls the same exported symbols. Arnd -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org More majordomo info at http://vger.kernel.org/majordomo-info.html