From mboxrd@z Thu Jan  1 00:00:00 1970
From: Grant Diffey <gdiffey@gmail.com>
Subject: Re: A plea for help on mixer support for Fast Track
 Ultra (8R)
Date: Sat, 21 May 2011 01:43:43 +1000
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To: Daniel Mack <zonque@gmail.com>
Cc: Takashi Iwai <tiwai@suse.de>, alsa-devel@alsa-project.org, Felix Homann <linuxaudio@showlabor.de>
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So something is very whacky with the control map. not sure how to debug
this.

The original patch felix posted works as I expect this one doesn't where
should I start debugging this?

Grant.


On Sat, May 21, 2011 at 1:08 AM, Grant Diffey <gdiffey@gmail.com> wrote:

> so this works.. (ie compiles and I get controls that do change volumes of
> things )
>
> I think there's something whacky with the control map. (I can't seem to
> send Ain5 to out 1 and 2 successfully. but I'll test this with felix's
> original code.
>
> The Ain's are not capture volumes for this device.
>
> There's 8 "analog ins" and 8 "software returns" (pcm channels) that are
> mixed to 8 outputs. all the input gain controls are physical or line +4db
> level balanced
>
> Grant.
>
>
>
> On Fri, May 20, 2011 at 9:37 PM, Daniel Mack <zonque@gmail.com> wrote:
>
>> On Fri, May 20, 2011 at 1:14 PM, Felix Homann <linuxaudio@showlabor.de>
>> wrote:
>> > Sorry, here are the first lines:
>> >
>> > [ 4104.510080] usb 1-3: new high speed USB device using ehci_hcd and
>> address
>> > 2
>> > [ 4104.661745] usb 1-3: config 1 interface 3 altsetting 0 bulk endpoint
>> 0x7
>> > has invalid maxpacket 8
>> > [ 4104.661750] usb 1-3: config 1 interface 3 altsetting 0 bulk endpoint
>> 0x87
>> > has invalid maxpacket 8
>> > [ 4104.824137] BUG: unable to handle kernel NULL pointer dereference at
>> > 0000000000000020
>> > [ 4104.824147] IP: [<ffffffffa04b0119>]
>> snd_usb_mixer_controls+0x49/0x1a0
>> > [snd_usb_audio]
>>
>> Ok, chip->ctrl_intf needs to be initialized. Next try ...
>>
>>
>> Daniel
>>
>
>