Re: [PATCH v6 09/10] usb: roles: add USB Type-B GPIO connector driver
From: Andy Shevchenko
Date: Wed Jun 05 2019 - 04:50:08 EST
On Wed, May 29, 2019 at 10:44 AM Chunfeng Yun <chunfeng.yun@xxxxxxxxxxxx> 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,