[alsa-devel] [PATCH v1 0/6] ALSA: usb: UAC3. Add support for Basic Audio Device (BADD)

[Ruslan Bilovol]

On Tue, Dec 19, 2017 at 11:40 AM, Takashi Iwai <tiwai at suse.de> wrote:
> On Tue, 19 Dec 2017 10:14:05 +0100,
> Jorge Sanjuan wrote:
>>
>> This adds functionality for the Basic Audio Device (BADD) subset that is
>> defined in the USB Audio Class 3 (UAC3). In a BADD compliant driver, all
>> Class Specific descriptors are inferred and so they should all be generated
>> in the *host* as the device wont expose those. This also applies to the new
>> HIGH CAPABILITY descriptor as the GET request is not to be supported in
>> a BADD compliant driver.
>>
>> The new class requires the device to have 3 usb configurations as follows:
>>
>>     1: Legacy Mode: UAC1 or UAC2.
>>     2: BADD device with a prefined topology. (Minimum).
>>     3: UAC3 device for more detailed description or more complex
>>        devices that can't be covered by the BADD profile.
>>
>> This patch series also includes some minor fixes to sound/usb.
>>
>> It has been tested with an actual UAC3 compliant device in different host
>> machines and all configs (UAC1/2, BADD and UAC3) work.
>>
>> Also, this has been implemented on top of the the patch which adds UAC3 support
>> to the usb sound card driver:
>>
>>       commit ddd452d7b04b86fb5f9285a19ac54deca9264ac1
>>       Author: Ruslan Bilovol <ruslan.bilovol at gmail.com>
>>       Date:   Tue Nov 7 04:01:20 2017 +0200
>
> Where did you get this commit at all...?  The UAC3 patchset has never
> been merged yet.  So it's moot for developing the stuff on top of it.
> Or at least coordinate with Ruslan for merging into his series for the
> next review round.
>
> Ruslan, can you revise the patchset addressing the issues, and
> resubmit?
>

I've been reworking my original patch for last few weeks (yeah, it's
slow, I was going to finish it last week, but was too busy).
Will finish it and review Jorge's patches as well (hadn't a change to
look into them yet)

Thanks,
Ruslan