Re: [PATCH 0/1] USB Audio Device Class 3.0 Gadget support

2017-12-07 Thread Ruslan Bilovol
Hi Felipe,

On Mon, Dec 4, 2017 at 1:36 PM, Felipe Balbi  wrote:
>
> Hi,
>
> Ruslan Bilovol  writes:
>> On Tue, Nov 7, 2017 at 3:52 AM, Ruslan Bilovol  
>> wrote:
>>> Hi,
>>>
>>> This patch adds USB Audio Device Class 3.0 [1] function
>>> support to gadget subsystem.
>>> I didn't add UAC3 support to legacy gadget as it will
>>> make preprocessor configuration too complex (UAC3 device
>>> must have two configurations for backward compatibility,
>>> first is UAC1/2 and second is UAC3), yet also I'm too lazy
>>> to do that and verify all possible configurations.
>>>
>>> For modern ConfigFS interface I'll provide my configuration
>>> for testing below; testing was done on a BeagleBone Black
>>> board.
>>>
>>> This patch depends on uac3 header files from include dir
>>> which I'll post as part of ALSA host UAC3 patch and will
>>> provide the link to it here.
>>
>> http://www.spinics.net/lists/alsa-devel/msg69071.html
>
> Once that patch hits upstream, then we can queue this for merge window
> otherwise we will just have issues and create unbisectable points in the
> tree.

Takashi promised to create an immutable branch for that purpose.

However, I'm currently reworking configfs part of UAC3 for channels
configuration handling, which is now more clear after sharing missing
parts of UAC3 spec by Pierre-Louis Bossart during host side patches
review; so I will send v2 soon.

Thanks,
Ruslan
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Re: [PATCH 0/1] USB Audio Device Class 3.0 Gadget support

2017-12-04 Thread Felipe Balbi

Hi,

Ruslan Bilovol  writes:
> On Tue, Nov 7, 2017 at 3:52 AM, Ruslan Bilovol  
> wrote:
>> Hi,
>>
>> This patch adds USB Audio Device Class 3.0 [1] function
>> support to gadget subsystem.
>> I didn't add UAC3 support to legacy gadget as it will
>> make preprocessor configuration too complex (UAC3 device
>> must have two configurations for backward compatibility,
>> first is UAC1/2 and second is UAC3), yet also I'm too lazy
>> to do that and verify all possible configurations.
>>
>> For modern ConfigFS interface I'll provide my configuration
>> for testing below; testing was done on a BeagleBone Black
>> board.
>>
>> This patch depends on uac3 header files from include dir
>> which I'll post as part of ALSA host UAC3 patch and will
>> provide the link to it here.
>
> http://www.spinics.net/lists/alsa-devel/msg69071.html

Once that patch hits upstream, then we can queue this for merge window
otherwise we will just have issues and create unbisectable points in the
tree.

-- 
balbi


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Re: [PATCH 0/1] USB Audio Device Class 3.0 Gadget support

2017-11-06 Thread Ruslan Bilovol
On Tue, Nov 7, 2017 at 3:52 AM, Ruslan Bilovol  wrote:
> Hi,
>
> This patch adds USB Audio Device Class 3.0 [1] function
> support to gadget subsystem.
> I didn't add UAC3 support to legacy gadget as it will
> make preprocessor configuration too complex (UAC3 device
> must have two configurations for backward compatibility,
> first is UAC1/2 and second is UAC3), yet also I'm too lazy
> to do that and verify all possible configurations.
>
> For modern ConfigFS interface I'll provide my configuration
> for testing below; testing was done on a BeagleBone Black
> board.
>
> This patch depends on uac3 header files from include dir
> which I'll post as part of ALSA host UAC3 patch and will
> provide the link to it here.

http://www.spinics.net/lists/alsa-devel/msg69071.html

Thanks,
Ruslan
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[PATCH 0/1] USB Audio Device Class 3.0 Gadget support

2017-11-06 Thread Ruslan Bilovol
Hi,

This patch adds USB Audio Device Class 3.0 [1] function
support to gadget subsystem.
I didn't add UAC3 support to legacy gadget as it will
make preprocessor configuration too complex (UAC3 device
must have two configurations for backward compatibility,
first is UAC1/2 and second is UAC3), yet also I'm too lazy
to do that and verify all possible configurations.

For modern ConfigFS interface I'll provide my configuration
for testing below; testing was done on a BeagleBone Black
board.

This patch depends on uac3 header files from include dir
which I'll post as part of ALSA host UAC3 patch and will
provide the link to it here.

uac_3

mkdir cfg
mount none cfg -t configfs
mkdir cfg/usb_gadget/g1
cd cfg/usb_gadget/g1
mkdir configs/c.1
mkdir functions/uac3.0
mkdir strings/0x409
mkdir configs/c.1/strings/0x409
echo 0x0101 > idProduct
echo 0x1d6b > idVendor
echo my-serial-num > strings/0x409/serialnumber
echo my-manufacturer > strings/0x409/manufacturer
echo "Test gadget" > strings/0x409/product
echo "Conf 1" > configs/c.1/strings/0x409/configuration
echo 120 > configs/c.1/MaxPower
ln -s functions/uac3.0 configs/c.1
echo musb-hdrc.0 > UDC

uac_3 + uac2

mkdir cfg
mount none cfg -t configfs
mkdir cfg/usb_gadget/g1
cd cfg/usb_gadget/g1
mkdir configs/c.1
mkdir functions/uac2.0
mkdir strings/0x409
mkdir configs/c.1/strings/0x409
echo "Test gadget" > strings/0x409/product
echo "Conf 1" > configs/c.1/strings/0x409/configuration
echo 120 > configs/c.1/MaxPower
ln -s functions/uac2.0 configs/c.1
mkdir configs/c.2
mkdir functions/uac3.0
mkdir strings/0x409
mkdir configs/c.2/strings/0x409
echo "Conf 2" > configs/c.2/strings/0x409/configuration
echo 120 > configs/c.2/MaxPower
ln -s functions/uac3.0 configs/c.2
echo 0x0101 > idProduct
echo 0x1d6b > idVendor
echo my-serial-num > strings/0x409/serialnumber
echo my-manufacturer > strings/0x409/manufacturer
echo musb-hdrc.0 > UDC


[1] http://www.usb.org/developers/docs/devclass_docs/USB_Audio_v3.0.zip

Ruslan Bilovol (1):
  usb: gadget: add USB Audio Device Class 3.0 gadget support

 Documentation/ABI/testing/configfs-usb-gadget-uac3 |   14 +
 Documentation/usb/gadget-testing.txt   |   41 +
 drivers/usb/gadget/Kconfig |   22 +
 drivers/usb/gadget/function/Makefile   |2 +
 drivers/usb/gadget/function/f_uac3.c   | 1497 
 drivers/usb/gadget/function/u_uac3.h   |   38 +
 drivers/usb/gadget/legacy/Kconfig  |3 +-
 7 files changed, 1616 insertions(+), 1 deletion(-)
 create mode 100644 Documentation/ABI/testing/configfs-usb-gadget-uac3
 create mode 100644 drivers/usb/gadget/function/f_uac3.c
 create mode 100644 drivers/usb/gadget/function/u_uac3.h

-- 
1.9.1

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