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From: Chunfeng Yun <chunfeng.yun@mediatek.com>
To: Felipe Balbi <balbi@kernel.org>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
	Alan Stern <stern@rowland.harvard.edu>,
	<linux-usb@vger.kernel.org>, <linux-mediatek@lists.infradead.org>
Subject: support USB 3.2 function remote wake
Date: Wed, 29 Jun 2022 17:02:54 +0800	[thread overview]
Message-ID: <cd7169df640fe6dab85f6d94cb8f40c181e08d2b.camel@mediatek.com> (raw)

Hi,

I plan to support function remote wakeup on our usb3 device controller
driver.

A function may signal that it wants to exit from Function Suspend by
sending a Function Wake Notification to the host, and the notification
need knows the first interface number in this function.
But the current gadget ops:
    int (*wakeup)(struct usb_gadget *);
does not provide information about interface number;

There seems to be two ways:
1. add a new parameter as below,
    int (*wakeup)(struct usb_gadget *, u8 intf);
2. add a new ops, such as,
    int (*function_wakeup)(struct usb_gadget *, u8 intf);

Do you have any suggestions?

Thanks a lot


             reply	other threads:[~2022-06-29  9:03 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-06-29  9:02 Chunfeng Yun [this message]
2022-06-29 10:22 ` support USB 3.2 function remote wake Greg Kroah-Hartman
2022-07-02  9:09   ` Chunfeng Yun

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