Hi ,
Also the basis for device enumeration is :
1) Vendor ID = 0x05ac
2) Product ID=0x12nn
where nn can be anything . The product id varies depending upon the
type of iPod .
so the basis for device enumeration can be :
1) ( ( Vendor_id == 0x5ac ) && ( ( Product_ID >> 8 ) == 0x12) )
is there any way to specify this rule in quirk table ?
or
2) explicitly list all ipods types (with different pids ) in quirk
table and provide provision to
add future / not added ipod types dynamically .
Thanx & Regards
Amit Nagal
On Wed, Jun 16, 2010 at 10:28 AM, Amit Nagal <helloin.amit@xxxxxxxxx> wrote:
> Hi ,
>
> This is in continuation of my last mail .
>
> For existing ipod types (eg ipod touch , ipod classic ) ,
>
> we can provide quirk entries at compile time .
>
> what i want to ask is :
>
> can we provide quirk entries when the system is running
>
> so that even if ipod type (VID/PID) is not registered , at run time
>
> we can register its quirk entries ?
>
> Thanx & Regards
>
> Amit Nagal
>
>
>
>
>
> On Wed, Jun 16, 2010 at 9:50 AM, Amit Nagal <helloin.amit@xxxxxxxxx> wrote:
>> Hi Alan ,
>>
>> Thanx for the reply . The enclosed patch will definately help my cause .
>>
>> In my case this is required as we want to stream digital audio from
>> ipod to our host .
>>
>> i will definately need to provide quirk entries at run time ,
>>
>> as at compile time , it will be extremely difficult to put quirk
>> entries for all the ipods .
>>
>> there should be some registration mechanism in user space to specify
>> quirk entries at run time .
>>
>> how we can specify quirk entries while the system is running ?
>>
>> Thanx & Regards
>>
>> Amit Nagal
>>
>>
>>
>>
>>
>>
>>
>>
>>
>> On Tue, Jun 15, 2010 at 7:49 PM, Alan Stern <stern@xxxxxxxxxxxxxxxxxxx> wrote:
>>> On Mon, 14 Jun 2010, Amit Nagal wrote:
>>>
>>>> Hi Alan ,
>>>>
>>>> Thanx for the reply .
>>>>
>>>> Following enclosed are logs :
>>>>
>>>> cat /proc/bus/usb/devices :
>>>>
>>>>
>>>> T: Bus=02 Lev=01 Prnt=01 Port=05 Cnt=01 Dev#= 2 Spd=480 MxCh= 0
>>>> D: Ver= 2.00 Cls=00(>ifc ) Sub=00 Prot=00 MxPS=64 #Cfgs= 2
>>>> P: Vendor=05ac ProdID=1261 Rev= 0.01
>>>> S: Manufacturer=Apple Inc.
>>>> S: Product=iPod
>>>> S: SerialNumber=000A270013A06238
>>>> C:* #Ifs= 1 Cfg#= 1 Atr=c0 MxPwr=500mA
>>>> I:* If#= 0 Alt= 0 #EPs= 2 Cls=08(stor.) Sub=06 Prot=50 Driver=usb-storage
>>>> E: Ad=83(I) Atr=02(Bulk) MxPS= 512 Ivl=0ms
>>>> E: Ad=02(O) Atr=02(Bulk) MxPS= 512 Ivl=0ms
>>>> C: #Ifs= 3 Cfg#= 2 Atr=c0 MxPwr=500mA
>>>> I: If#= 0 Alt= 0 #EPs= 0 Cls=01(audio) Sub=01 Prot=00 Driver=
>>>> I: If#= 1 Alt= 0 #EPs= 0 Cls=01(audio) Sub=02 Prot=00 Driver=
>>>> I: If#= 1 Alt= 1 #EPs= 1 Cls=01(audio) Sub=02 Prot=00 Driver=
>>>> E: Ad=81(I) Atr=01(Isoc) MxPS= 192 Ivl=1ms
>>>> I: If#= 2 Alt= 0 #EPs= 1 Cls=03(HID ) Sub=00 Prot=00 Driver=
>>>> E: Ad=83(I) Atr=03(Int.) MxPS= 64 Ivl=125us
>>>
>>>> Looking forward to suggested patch .
>>>
>>> Here it is. However I must warn you: It is highly unlikely this patch
>>> will ever be accepted into the offical Linux kernel. Most people who
>>> have iPods and plug them into their computers do expect the iPod to be
>>> placed in the mass-storage config.
>>>
>>> About the closest we might come is a change allowing you to specify
>>> quirk entries while the system is running.
>>>
>>> Alan Stern
>>>
>>>
>>>
>>> Index: 2.6.34/drivers/usb/core/generic.c
>>> ===================================================================
>>> --- 2.6.34.orig/drivers/usb/core/generic.c
>>> +++ 2.6.34/drivers/usb/core/generic.c
>>> @@ -18,6 +18,7 @@
>>> */
>>>
>>> #include <linux/usb.h>
>>> +#include <linux/usb/quirks.h>
>>> #include "usb.h"
>>> #include "hcd.h"
>>>
>>> @@ -47,6 +48,9 @@ int usb_choose_configuration(struct usb_
>>> int insufficient_power = 0;
>>> struct usb_host_config *c, *best;
>>>
>>> + if (udev->quirks & USB_QUIRK_DONT_CONFIGURE)
>>> + return -1;
>>> +
>>> best = NULL;
>>> c = udev->config;
>>> num_configs = udev->descriptor.bNumConfigurations;
>>> Index: 2.6.34/drivers/usb/core/quirks.c
>>> ===================================================================
>>> --- 2.6.34.orig/drivers/usb/core/quirks.c
>>> +++ 2.6.34/drivers/usb/core/quirks.c
>>> @@ -50,6 +50,9 @@ static const struct usb_device_id usb_qu
>>> /* appletouch */
>>> { USB_DEVICE(0x05ac, 0x021a), .driver_info = USB_QUIRK_RESET_RESUME },
>>>
>>> + /* Apple iPod */
>>> + { USB_DEVICE(0x05ac, 0x1261), .driver_info = USB_QUIRK_DONT_CONFIGURE },
>>> +
>>> /* Avision AV600U */
>>> { USB_DEVICE(0x0638, 0x0a13), .driver_info =
>>> USB_QUIRK_STRING_FETCH_255 },
>>> Index: 2.6.34/include/linux/usb/quirks.h
>>> ===================================================================
>>> --- 2.6.34.orig/include/linux/usb/quirks.h
>>> +++ 2.6.34/include/linux/usb/quirks.h
>>> @@ -22,4 +22,7 @@
>>> /*device will morph if reset, don't use reset for handling errors */
>>> #define USB_QUIRK_RESET_MORPHS 0x00000010
>>>
>>> +/* device should not be configured by default */
>>> +#define USB_QUIRK_DONT_CONFIGURE 0x00000020
>>> +
>>> #endif /* __LINUX_USB_QUIRKS_H */
>>>
>>>
>>
>
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