linux-kernel - Re: [PATCH v4 5/5] usb: host: add xhci-exynos driver

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Message-ID: <20220428032610.GC151827@ubuntu>
Date:   Thu, 28 Apr 2022 12:26:10 +0900
From:   Jung Daehwan <dh10.jung@...sung.com>
To:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc:     Mathias Nyman <mathias.nyman@...el.com>,
        "open list:USB XHCI DRIVER" <linux-usb@...r.kernel.org>,
        open list <linux-kernel@...r.kernel.org>,
        Howard Yen <howardyen@...gle.com>,
        Jack Pham <jackp@...eaurora.org>,
        Puma Hsu <pumahsu@...gle.com>,
        "J . Avila" <elavila@...gle.com>, sc.suh@...sung.com,
        Krzysztof Kozlowski <krzysztof.kozlowski@...onical.com>
Subject: Re: [PATCH v4 5/5] usb: host: add xhci-exynos driver

On Tue, Apr 26, 2022 at 12:20:56PM +0200, Greg Kroah-Hartman wrote:
> On Tue, Apr 26, 2022 at 06:18:48PM +0900, Daehwan Jung wrote:
> > This driver is for Samsung Exynos xhci host conroller. It uses xhci-plat
> > driver mainly and extends some functions by xhci hooks and overrides.
> > 
> > It supports USB Audio offload with Co-processor. It only cares DCBAA,
> > Device Context, Transfer Ring, Event Ring, and ERST. They are allocated
> > on specific address with xhci hooks. Co-processor could use them directly
> > without xhci driver after then.
> > 
> > Signed-off-by: Daehwan Jung <dh10.jung@...sung.com>
> > ---
> >  drivers/usb/host/Kconfig       |   8 +
> >  drivers/usb/host/Makefile      |   1 +
> >  drivers/usb/host/xhci-exynos.c | 567 +++++++++++++++++++++++++++++++++
> >  drivers/usb/host/xhci-exynos.h |  50 +++
> 
> Why do you need a .h file for a simple single driver like this?  Just
> put it all into the .c file please.
> 
> thanks,
> 
> greg k-h
> 

Yes. I will do it on next submission.

Best Regards,
Jung Daehwan