Why DDE BSD for audio?

[Nobody III]

I haven't been able to get the dde_bsd audio driver to work on my Dell
Latitude 6430u that I have used the Turmvilla scenario on. I didn't look
into it much, so it's possible that my config was bad, but it seems more
likely that my hardware is unsupported by the BSD driver.

On Jan 31, 2017 4:31 PM, "Alexander Senier" <alex at ...331...> wrote:

> Hi Josef,
>
> I was expecting that kind of answer and I can feel the pain ;-) Thanks for
> the insight.
>
> Cheers,
> Alex
>
> On 31.01.2017 14:13, Josef Söntgen wrote:
> > Hello Alexander,
> >
> > * Alexander Senier <alex at ...331...> [2017-01-31 12:52:50 +0100]:
> >> when looking into Genodes driver support, I was wondering about DDE
> >> BSD. The audio_* ports seems to be its only use case. Is there any
> >> (technical) justification for not porting audio drivers from Linux
> >> using DDE Linux? With USB, WiFi and GMA there were much more complex
> >> driver ported using DDE Linux after all...
> >
> > TL;DR personal preference lead to using OpenBSD for the x86 audio
> > driver.
> >
> > Long story (with some ranting included):
> >
> > Generally speaking, porting drivers from OpenBSD is much easier than,
> > for example, from Linux (at least in my experience). We take drivers
> > from Linux mainly for two reasons:
> >
> >   1) We need support for devices that are only supported in Linux
> >      (at the time that was true for iwlwifi MVM devices and for
> >       GMA the DRM subsystem in the Linux driver is the de-facto
> >       upstream branch, all other OS' used this base as well)
> >   2) We are most experienced in porting drivers from Linux and
> >      did so in the past (that is true in case of the USB driver)
> >
> > That being said, porting the audio drivers from OpenBSD was my personal
> > decision. At the time we wanted to replace the aging OSSv4 based driver
> > and at first I did so as a pet-project. After my experience with porting
> > the wifi_drv from Linux, I was (and to some degree still am) fed up with
> > Linux because it is a complex process to do so. What is more, with every
> > update of dde_linux it gets more complicated because APIs change in
> > subtile ways that we did not anticipated during the initial porting
> > effort or other APIs are used, which leads to increased size of the
> > Linux emulation environment. All in all the maintaince burden is high
> > with ported Linux drivers — that is why we update them only if it is
> > really necessary. This is the main reason I turned to OpenBSD. That and
> > my dislike for ALSA.
> >
> >
> > Regards
> > Josef
> >
>
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