linux-kernel - Re: [2/2] hid-multitouch: introduce IrTouch Infrared USB device

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Date:	Fri, 28 Jan 2011 17:59:40 +0100
From:	Benjamin Tissoires <benjamin.tissoires@...c.fr>
To:	Florian Echtler <floe@...terbrot.org>
Cc:	Dmitry Torokhov <dmitry.torokhov@...il.com>,
	Henrik Rydberg <rydberg@...omail.se>,
	Jiri Kosina <jkosina@...e.cz>,
	Stephane Chatty <chatty@...-enac.fr>,
	linux-input@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [2/2] hid-multitouch: introduce IrTouch Infrared USB device

Hi Florian,


On Fri, Jan 28, 2011 at 17:24, Florian Echtler <floe@...terbrot.org> wrote:
> Hello everyone,
>
>> The product id is the 42 inches one. I don't know if they have
>> other product id for the other size, or if it is a per-size product id.
> This is very interesting, I have access to a 65" IrTouch system which
> has VID 0x6615 and PID 0x0C20. I wasn't aware that there are already
> kernel drivers for their systems, I had been playing around with their
> awful binary driver and had done some experiments with libusb. Is there
> a documentation of some kind available?

We just made the analysis of the hid reports that are send. We have no
documentation for this particular device.

>
>> diff --git a/drivers/hid/hid-ids.h b/drivers/hid/hid-ids.h
>> index 92a0d61..b1dd7ad 100644
>> --- a/drivers/hid/hid-ids.h
>> +++ b/drivers/hid/hid-ids.h
>> @@ -333,6 +333,9 @@
>>  #define USB_VENDOR_ID_IMATION                0x0718
>>  #define USB_DEVICE_ID_DISC_STAKKA    0xd000
>>
>> +#define USB_VENDOR_ID_IRTOUCHSYSTEMS 0x6615
>> +#define USB_DEVICE_ID_IRTOUCH_INFRARED_USB   0x0070
> I will test this on our screen next week.
> I assume that I should use the tree from:
> http://git.kernel.org/?p=linux/kernel/git/rydberg/input-mt.git;a=summary

hid-multitouch is schedulded for 2.6.38. So you can also use the stock
2.6.38-rc2:
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=summary


>
> Note: after briefly browsing through hid-multitouch.c, it seems to me
> that there might be issues; the USB interface on our screen doesn't
> report as HID device, but as vendor class (0xFF).

This is more problematic. Hardware makers are forced to push hid aware
firmware to be win7 certified. Maybe they have a new firmware for your
device.

Cheers,
Benjamin
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