linux-kernel - Re: [linux-usb-devel] [RFC] HID bus design overview.

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Date:	Wed, 04 Apr 2007 08:55:42 +0800
From:	Li Yu <raise.sail@...il.com>
To:	Jiri Kosina <jkosina@...e.cz>
CC:	Marcel Holtmann <marcel@...tmann.org>,
	Dmitry Torokhov <dmitry.torokhov@...il.com>,
	yanghong@...ss.com.cn,
	linux-usb-devel <linux-usb-devel@...ts.sourceforge.net>,
	hongzhiyi@...ss.com.cn, LKML <linux-kernel@...r.kernel.org>
Subject: Re: [linux-usb-devel] [RFC] HID bus design overview.

Jiri Kosina wrote:
> Current implementation (as you can see it in -mm or in my hid.git tree) is 
> creating hidraw interface for just every HID device/interface. But this 
> will get changed before merge.
>
> Passing just everything to hidraw is not a good option, as this could lead 
> to confusion and duplicating of input events (i.e. in-kernel hid driver 
> processes the report and generates input_event(), and also userland driver 
> obtains data from hidraw and generates input event through uinput ... not 
> good).
>
>   
After hearing your words, I change my implementation use hidraw as an
event filter, IOW, the HID core will handle these events which hidraw
can or need not handle. The modification is easy.

> BTW as soon as you have some presentable code, could you please send it so 
> that we could see what aproach you have taken? Debating over code is 
> usualy more efficient than just ranting random ideas :)
>
> Thanks,
>
>   

Of course, It's no problem. but it must be tomorrow, two reasons:

1. The development PC is at my home, I am not SOHO.
2. After change from "flip-flopping", the patch need some cleaning.

Good luck.

- Li Yu

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