Date: Mon, 05 May 2014 09:34:48 -0600 From: Ian Lepore <ian@FreeBSD.org> To: ticso@cicely.de Cc: freebsd-arm@FreeBSD.org, Matthias Meyser <meyser@xenet.de> Subject: Re: USB audio device on Raspberry Pi - link_elf: symbol isa_dmastatus undefined Message-ID: <1399304088.22079.242.camel@revolution.hippie.lan> In-Reply-To: <20140505144704.GA78493@cicely7.cicely.de> References: <535A8AEA.1000100@selasky.org> <20140425204134.GA458@cicely7.cicely.de> <20140430091411.GA45015@utility-01.thismonkey.com> <5360C0A7.9010407@selasky.org> <1398867266.22079.51.camel@revolution.hippie.lan> <CAGW5k5bZ_bTQUXuzNm=tbwx3npz1_HoOR3vM8TBRVFs8zWCq-w@mail.gmail.com> <5362638B.1080104@selasky.org> <5363C133.2000304@selasky.org> <5367973F.20300@xenet.de> <5367A154.8010508@selasky.org> <20140505144704.GA78493@cicely7.cicely.de>
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On Mon, 2014-05-05 at 16:47 +0200, Bernd Walter wrote: > On Mon, May 05, 2014 at 04:33:56PM +0200, Hans Petter Selasky wrote: > > On 05/05/14 15:50, Matthias Meyser wrote: > > > > > >Am 02.05.2014 18:00, schrieb Hans Petter Selasky: > > >>On 05/01/14 17:08, Hans Petter Selasky wrote: > > >>>On 05/01/14 01:34, Johny Mattsson wrote: > > >>>>On 1 May 2014 00:14, Ian Lepore <ian@freebsd.org> wrote: > > >>>> > > >>>>>I was doing some testing on a wandboard (about twice as fast an an > > >>>>>rpi) > > >>>>>with > > >>>>>more than 20k int/sec without having any problems. > > >>>>> > > >>>> > > >>>>On a similar note, I've pushed an i.MX 283 (400MHz) board to above 300k > > >>>>int/sec, on Linux. Admittedly at that point my shell wasn't what you'd > > >>>>call > > >>>>"responsive" however =) The ISR in that scenario was the GPIO > > >>>>handler, so > > >>>>probably a bit more light-weight than an audio ISR. > > >>> > > >>>I'll have a look and see if I can fix it. > > >>Here is a patch (work in progress) which you can try: > > >>http://home.selasky.org:8192/dwc_otg_isoc_support_wip.diff > > >> > > >>Still not working 100% reliable. Trying to figure out the last bits > > >>and pieces. > > > > > >For testing it would be very helful if someone could add > > > > > >device sound > > >device snd_uaudio > > > > > >to RPI-B kernel. > > > > > >Having this in BEAGLEBONE would be nice to. > > >Perhaps this schould go in every config that supports usb. > > > > > > > Hi, > > > > The following patch should make "devd" load sound.ko and snd_uaudio.ko > > automatically: > > > > http://svnweb.freebsd.org/changeset/base/265359 > > This won't work unless sound.ko especting ISA in ARM kernel is fixed > as well. > This shouldn't be a problem. The code that references isa stuff is wrapped in #ifdef DEV_ISA, and an arm kernel build won't have that defined. The problem was that the makefile for building a sound module created an opt_isa.h containing #define DEV_ISA when building for arm so the loadable sound modules had references to isa but the driver in the kernel didn't. -- Ian
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