linux-kernel - RE: [PATCH v4 1/4] fpga: dfl: reorganize to subdir layout

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Message-ID: <DM6PR11MB3819259241791EB04A2CB9C8850F9@DM6PR11MB3819.namprd11.prod.outlook.com>
Date:   Wed, 16 Jun 2021 01:05:36 +0000
From:   "Wu, Hao" <hao.wu@...el.com>
To:     Tom Rix <trix@...hat.com>, "mdf@...nel.org" <mdf@...nel.org>,
        "corbet@....net" <corbet@....net>,
        "michal.simek@...inx.com" <michal.simek@...inx.com>,
        "gregkh@...uxfoundation.org" <gregkh@...uxfoundation.org>,
        "krzysztof.kozlowski@...onical.com" 
        <krzysztof.kozlowski@...onical.com>,
        "nava.manne@...inx.com" <nava.manne@...inx.com>,
        "Xu, Yilun" <yilun.xu@...el.com>,
        "davidgow@...gle.com" <davidgow@...gle.com>,
        "fpacheco@...hat.com" <fpacheco@...hat.com>,
        "Gong, Richard" <richard.gong@...el.com>,
        "luca@...aceresoli.net" <luca@...aceresoli.net>
CC:     "linux-fpga@...r.kernel.org" <linux-fpga@...r.kernel.org>,
        "linux-doc@...r.kernel.org" <linux-doc@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "linux-arm-kernel@...ts.infradead.org" 
        <linux-arm-kernel@...ts.infradead.org>
Subject: RE: [PATCH v4 1/4] fpga: dfl: reorganize to subdir layout

> On 6/15/21 1:08 AM, Wu, Hao wrote:
> >> Subject: [PATCH v4 1/4] fpga: dfl: reorganize to subdir layout
> >>
> >> From: Tom Rix <trix@...hat.com>
> >>
> >> Follow drivers/net/ethernet/ which has control configs
> >> NET_VENDOR_BLA that map to drivers/net/ethernet/bla
> >> Since fpgas do not have many vendors, drop the 'VENDOR' and use
> >> FPGA_BLA.
> > Hi Tom,
> >
> > Thanks for this patch. : )
> >
> > DFL is not a vendor, but something can be shared/reused. It's possible that
> > other vendors reuse the same concepts and the drivers of DFL. If vendor
> > drivers need to be moved inside sub folders, then maybe it's better to
> > leave DFL in the parent folder?
> 
> xrt is also not a vendor, more a subdevice framework like dfl.
> 
> I am not sure what you mean by other dfl vendors can you give an example ?

It's fine, but the description here is a little confusing on vendor/framework
handling. No other vendor so far, but it's possible, DFL can be used in 
non-intel device, and related drivers can be reused as well. Then a fpga 
mgr driver depends on DFL, should be put inside dfl folder or new
vendor's subfolder?

Hao