Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67;
Message-ID: <1559789630.8487.111.camel@mhfsdcap03>
Subject: Re: [PATCH v6 09/10] usb: roles: add USB Type-B GPIO connector
 driver
From:   Chunfeng Yun <chunfeng.yun@mediatek.com>
To:     Andy Shevchenko <andy.shevchenko@gmail.com>
CC:     Rob Herring <robh+dt@kernel.org>,
        Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
        Heikki Krogerus <heikki.krogerus@linux.intel.com>,
        Mark Rutland <mark.rutland@arm.com>,
        Matthias Brugger <matthias.bgg@gmail.com>,
        Adam Thomson <Adam.Thomson.Opensource@diasemi.com>,
        Li Jun <jun.li@nxp.com>,
        "Badhri Jagan Sridharan" <badhri@google.com>,
        Hans de Goede <hdegoede@redhat.com>,
        Min Guo <min.guo@mediatek.com>,
        devicetree <devicetree@vger.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
        USB <linux-usb@vger.kernel.org>,
        linux-arm Mailing List <linux-arm-kernel@lists.infradead.org>,
        "moderated list:ARM/Mediatek SoC support" 
        <linux-mediatek@lists.infradead.org>,
        Biju Das <biju.das@bp.renesas.com>,
        Linus Walleij <linus.walleij@linaro.org>,
        "Yu Chen" <chenyu56@huawei.com>
Date:   Thu, 6 Jun 2019 10:53:51 +0800
In-Reply-To: <CAHp75VcbZwd0e6r38C2x7HLEHLr4oR7TjwdDXnDxRPRs3anwgA@mail.gmail.com>
References: <1559115828-19146-1-git-send-email-chunfeng.yun@mediatek.com>
         <1559115828-19146-10-git-send-email-chunfeng.yun@mediatek.com>
         <CAHp75VcbZwd0e6r38C2x7HLEHLr4oR7TjwdDXnDxRPRs3anwgA@mail.gmail.com>
Content-Type: text/plain; charset="UTF-8"
Content-Transfer-Encoding: 7bit
MIME-Version: 1.0
Sender: linux-kernel-owner@vger.kernel.org
Precedence: bulk

On Wed, 2019-06-05 at 11:45 +0300, Andy Shevchenko wrote:
> On Wed, May 29, 2019 at 10:44 AM Chunfeng Yun <chunfeng.yun@mediatek.com> wrote:
> >
> > Due to the requirement of usb-connector.txt binding, the old way
> > using extcon to support USB Dual-Role switch is now deprecated
> > when use Type-B connector.
> > This patch introduces a driver of Type-B connector which typically
> > uses an input GPIO to detect USB ID pin, and try to replace the
> > function provided by extcon-usb-gpio driver
> 
> > +static SIMPLE_DEV_PM_OPS(usb_conn_pm_ops,
> > +                        usb_conn_suspend, usb_conn_resume);
> > +
> > +#define DEV_PMS_OPS (IS_ENABLED(CONFIG_PM_SLEEP) ? &usb_conn_pm_ops : NULL)
> 
> Why this macro is needed?
Want to set .pm as NULL when CONFIG_PM_SLEEP is not enabled.

Thanks
>