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From:   Dave Airlie <airlied@gmail.com>
Date:   Thu, 4 Aug 2022 05:04:47 +1000
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Subject: Re: New subsystem for acceleration devices
To:     Oded Gabbay <oded.gabbay@gmail.com>
Cc:     Yuji Ishikawa <yuji2.ishikawa@toshiba.co.jp>,
        Jiho Chu <jiho.chu@samsung.com>,
        Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
        Arnd Bergmann <arnd@arndb.de>,
        "Linux-Kernel@Vger. Kernel. Org" <linux-kernel@vger.kernel.org>
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On Sun, 31 Jul 2022 at 22:04, Oded Gabbay <oded.gabbay@gmail.com> wrote:
>
> Hi,
> Greg and I talked a couple of months ago about preparing a new accel
> subsystem for compute/acceleration devices that are not GPUs and I
> think your drivers that you are now trying to upstream fit it as well.

We've had some submissions for not-GPUs to the drm subsystem recently.

Intel GNA, Intel VPU, NVDLA, rpmsg AI processor unit.

why is creating a new subsystem at this time necessary?

Are we just creating a subsystem to avoid the open source userspace
consumer rules? Or do we have some concrete reasoning behind it?

Dave.