[PATCH v6 09/10] usb: roles: add USB Type-B GPIO connector driver

Andy Shevchenko andy.shevchenko at gmail.com
Wed Jun 5 01:45:55 PDT 2019


On Wed, May 29, 2019 at 10:44 AM Chunfeng Yun <chunfeng.yun at 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?

-- 
With Best Regards,
Andy Shevchenko



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