Re: [FFADO-devel] [patch][Fireworks] workaround for AudioFire12/8 with latest firmware

[Jonathan W. <jw...@ju...>]

Hi Takashi

On Wed, Oct 23, 2013 at 07:17:38PM +0900, Takashi Sakamoto wrote:
> This seris of patch is a solution for #360.
> 
> 'Make echo audiofire 8 and audiofire 12 work with recent firmwares'
> http://subversion.ffado.org/ticket/360
> 
> As long as the attached debug information, there are two issues.
> 1. EfcPolledValuesCmd causes assertion related to in/out channel
> 2. EfcGetClock command return invalid sampling rate/clock id
> :
> It's a hard for me to implement EFC (not over FCP) in FFADO so this
> time I hope to add some workaround.

I take it from this that the "full" fix for the problem is to implement
these two commands in FFADO using EFC rather than FCP.  However, for the
moment you have implemented a workaround which manages to make things work
without having to code the new functionality.  Is this right?

> but actually there is no need to update firmware because with 5.5
> or later, AudioFire12 reduce its support for sampling frequency up
> to 96.0kHz.

That sounds odd - any idea why they did this?  I know that FFADO limits DICE
devices to 96 kHz, but that was due to us not supporting the transfer mode
used by DICE when 4x modes were selected.

Anyway, I take it that with this series of patches it's possible to use
FFADO with AF8 and AF12 interfaces equipped with firmware greater than 4.8.
This is certainly good news.

Regards
  jonathan