Detecting the IPOD as HID device

[Maciej Grela]

2010/8/26 Sandeep G.R <grsandeep85 at gmail.com>:
>
> On Thu, Aug 26, 2010 at 10:05 AM, Greg KH <greg at kroah.com> wrote:
>> On Thu, Aug 26, 2010 at 07:07:43AM +0530, Sandeep G.R wrote:
>>> On Wed, Aug 25, 2010 at 10:12 PM, Greg KH <greg at kroah.com> wrote:
>>> >
>>> > On Wed, Aug 25, 2010 at 06:31:10PM +0200, Maciej Grela wrote:
>>> > > 2010/8/25 Greg KH <greg at kroah.com>:
>>> > > > On Wed, Aug 25, 2010 at 09:29:50PM +0530, Sandeep G.R wrote:
>>> > > >> Hi All,
>>> > > >>
>>> > > >> ? ? ? ? ? ? ?I have an iPOD and when connect to my linux
>>> > > >> host(ubuntu 10.04)
>>> > > >> by default it will detect as usb mass storage i need to write a
>>> > > >> driver so
>>> > > >> that when the iPOD is connected to the linux host the device
>>> > > >> should change
>>> > > >> its configuration from mass storage to HID device.
>>> > > >
>>> > > > Why would you want to do that?
>>> > > >
>>> > > > And what type of HID device? ?Does the ipod export a HID device
>>> > > > interface already?
>>> > > >
>>> > >
>>> > > Yes, it does. My ipod classic has two configurations - one is normal
>>> > > usb-storage
>>> > > and the second one has audio and HID ifaces. The HID EP doesn`t seem
>>> > > to
>>> > > send any events and the audio says "cannot get freq at ep 0x81" so
>>> > > it`s not very
>>> > > useful at the moment.
>>> >
>>> > Odds are the HID one is there so that a userspace Windows program can
>>> > control the device (iTunes?). ?That's the easy way to write a userspace
>>> > Windows usb driver. ?It probably isn't a real "HID" device at all,
>>> > especially if you can't parse the HID descriptors.
>>> >
>>> > good luck,
>>> >
>>> > greg k-h
>>>
>>> Hi Greg,
>>>
>>>                If i connect the ipod to the linux host and check for
>>> the command the message appears as follows:
>>
>> Ok, and what are you going to do with this HID interface?  You can
>> switch to it easily from userspace, but then the issue is controlling
>> the device properly.
>>
>> good luck,
>>
>> greg k-h
>>
> Hi Greg,
>
>             I need to send the IAP commands which is provided by the iPOD,
> and if i connect the iPOD to the linux host i can control the iPOD from my
> linux host, i can play audio/video which is present in the iPOD from linux
> host, also the sound output is directed to external speaker which is
> connected to linux host but if you connect headset to iPOD at the same time
> you will not be able to listen songs. For this reason i need to make it to
> detect as HID device. How to proceed any suggestions will be great.
>

Hi,

Are these IAP commands described somewhere ?

Br,
Maciej Grela