linux-kernel - Re: [RESEND PATCH v6, 4/5] usb: Add MediaTek USB3 DRD Driver

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Date:   Tue, 11 Oct 2016 11:14:23 +0800
From:   Chunfeng Yun <chunfeng.yun@...iatek.com>
To:     Matthias Brugger <matthias.bgg@...il.com>
CC:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Felipe Balbi <felipe.balbi@...ux.intel.com>,
        Mathias Nyman <mathias.nyman@...el.com>,
        Oliver Neukum <oneukum@...e.com>,
        Alan Stern <stern@...land.harvard.edu>,
        Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        "Ian Campbell" <ijc+devicetree@...lion.org.uk>,
        Sergei Shtylyov <sergei.shtylyov@...entembedded.com>,
        Pawel Moll <pawel.moll@....com>,
        Kumar Gala <galak@...eaurora.org>,
        Sascha Hauer <s.hauer@...gutronix.de>,
        Alan Cooper <alcooperx@...il.com>, <linux-usb@...r.kernel.org>,
        <devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-mediatek@...ts.infradead.org>
Subject: Re: [RESEND PATCH v6, 4/5] usb: Add MediaTek USB3 DRD Driver

On Mon, 2016-10-10 at 13:00 +0200, Matthias Brugger wrote:
> 
> On 09/21/2016 07:54 AM, Chunfeng Yun wrote:
> > This patch adds support for the MediaTek USB3 controller
> > integrated into MT8173. It can be configured as Dual-Role
> > Device (DRD), Peripheral Only and Host Only (xHCI) modes.
> >
> > Signed-off-by: Chunfeng Yun <chunfeng.yun@...iatek.com>
> > ---
> >  drivers/usb/Kconfig                |    2 +
> >  drivers/usb/Makefile               |    1 +
> >  drivers/usb/mtu3/Kconfig           |   54 +++
> >  drivers/usb/mtu3/Makefile          |   19 +
> >  drivers/usb/mtu3/mtu3.h            |  422 +++++++++++++++++
> >  drivers/usb/mtu3/mtu3_core.c       |  871 +++++++++++++++++++++++++++++++++++
> >  drivers/usb/mtu3/mtu3_dr.c         |  379 ++++++++++++++++
> >  drivers/usb/mtu3/mtu3_dr.h         |  108 +++++
> >  drivers/usb/mtu3/mtu3_gadget.c     |  731 +++++++++++++++++++++++++++++
> >  drivers/usb/mtu3/mtu3_gadget_ep0.c |  883 ++++++++++++++++++++++++++++++++++++
> >  drivers/usb/mtu3/mtu3_host.c       |  294 ++++++++++++
> >  drivers/usb/mtu3/mtu3_hw_regs.h    |  473 +++++++++++++++++++
> >  drivers/usb/mtu3/mtu3_plat.c       |  490 ++++++++++++++++++++
> >  drivers/usb/mtu3/mtu3_qmu.c        |  599 ++++++++++++++++++++++++
> >  drivers/usb/mtu3/mtu3_qmu.h        |   43 ++
> >  15 files changed, 5369 insertions(+)
> >  create mode 100644 drivers/usb/mtu3/Kconfig
> >  create mode 100644 drivers/usb/mtu3/Makefile
> >  create mode 100644 drivers/usb/mtu3/mtu3.h
> >  create mode 100644 drivers/usb/mtu3/mtu3_core.c
> >  create mode 100644 drivers/usb/mtu3/mtu3_dr.c
> >  create mode 100644 drivers/usb/mtu3/mtu3_dr.h
> >  create mode 100644 drivers/usb/mtu3/mtu3_gadget.c
> >  create mode 100644 drivers/usb/mtu3/mtu3_gadget_ep0.c
> >  create mode 100644 drivers/usb/mtu3/mtu3_host.c
> >  create mode 100644 drivers/usb/mtu3/mtu3_hw_regs.h
> >  create mode 100644 drivers/usb/mtu3/mtu3_plat.c
> >  create mode 100644 drivers/usb/mtu3/mtu3_qmu.c
> >  create mode 100644 drivers/usb/mtu3/mtu3_qmu.h
> >
> 
> As Oliver already said, this patch is quiet big which makes it difficult 
> to review.
> I propose to provide a first implementation with minimal functionality 
> and incremental patches on top of this when the first got merged.
> 
> You could split the patch in three series/parts:
> 1. Host only
> 2. Peripheral only
> 3. Dual mode
> 
> What do you think?

Ok, I'll split the patch into some small ones as many as possible.

Thanks a lot
> 
> Regards,
> Matthias
>