linux-kernel - Re: [PATCH V5, 0/5] Add MediaTek USB3 DRD Driver

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Date:   Wed, 24 Aug 2016 14:42:03 +0800
From:   chunfeng yun <chunfeng.yun@...iatek.com>
To:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>
CC:     Felipe Balbi <felipe.balbi@...ux.intel.com>,
        Mathias Nyman <mathias.nyman@...el.com>,
        Matthias Brugger <matthias.bgg@...il.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: [PATCH V5, 0/5] Add MediaTek USB3 DRD Driver

Dear all,

    Could you please help me to review the code? 

    Thank you very much.

     
On Tue, 2016-08-09 at 16:23 +0800, Chunfeng Yun wrote:
> These patches introduce the MediaTek USB3 dual-role controller
> driver.
> 
> The driver can be configured as Dual-Role Device (DRD),
> Peripheral Only and Host Only (xHCI) modes. It works well
> with Mass Storage, RNDIS and g_zero on FS/HS and SS. And it is
> tested on MT8173 platform which only contains USB2.0 device IP,
> and on MT6290 platform which contains USB3.0 device IP.
> 
> Change in v5:
> 1. modify some comments
> 2. rename some unsuitable variables
> 3. add reg-names property for host node
> 4. add USB_MTU3_DEBUG to control debug messages
> 
> Change in v4:
> 1. fix build errors on non-mediatek platforms
> 2. provide manual dual-role switch via debugfs instead of sysfs
> 
> Change in v3:
> 1. fix some typo error
> 2. rename mtu3.txt to mt8173-mtu3.txt
> 
> Change in v2:
> 1. modify binding docs according to suggestions
> 2. modify some comments and remove some dummy blank lines
> 3. fix memory leakage
> 
> 
> Chunfeng Yun (5):
>   dt-bindings: mt8173-xhci: support host side of dual-role mode
>   dt-bindings: mt8173-mtu3: add devicetree bindings
>   usb: xhci-mtk: make IPPC register optional
>   usb: Add MediaTek USB3 DRD Driver
>   arm64: dts: mediatek: add USB3 DRD driver
> 
>  .../devicetree/bindings/usb/mt8173-mtu3.txt        |   87 ++
>  .../devicetree/bindings/usb/mt8173-xhci.txt        |   54 +-
>  arch/arm64/boot/dts/mediatek/mt8173-evb.dts        |   46 +-
>  arch/arm64/boot/dts/mediatek/mt8173.dtsi           |   29 +-
>  drivers/usb/Kconfig                                |    2 +
>  drivers/usb/Makefile                               |    1 +
>  drivers/usb/host/xhci-mtk.c                        |   36 +-
>  drivers/usb/mtu3/Kconfig                           |   54 ++
>  drivers/usb/mtu3/Makefile                          |   19 +
>  drivers/usb/mtu3/mtu3.h                            |  422 ++++++++++
>  drivers/usb/mtu3/mtu3_core.c                       |  874 +++++++++++++++++++
>  drivers/usb/mtu3/mtu3_dr.c                         |  375 +++++++++
>  drivers/usb/mtu3/mtu3_dr.h                         |  108 +++
>  drivers/usb/mtu3/mtu3_gadget.c                     |  731 ++++++++++++++++
>  drivers/usb/mtu3/mtu3_gadget_ep0.c                 |  879 ++++++++++++++++++++
>  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 +
>  20 files changed, 5598 insertions(+), 18 deletions(-)
>  create mode 100644 Documentation/devicetree/bindings/usb/mt8173-mtu3.txt
>  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
>