Apologies for the cross-posting, but I haven't had a clear answer (or
any answer) to this in nearly a week of asking, and I see at least one
other person cross compiling a driver they've written seems to having
the same issue, so I want to try to get some answers.
I have written a driver - snd-aica for sound on a Sega Dreamcast. This
is a legacy device, not PCI or anything like that, so it's a Platform
device.
It works very well with the oss emulation, so I assume it correctly handles PCM.
But I get this:
$ aplay -l
**** List of PLAYBACK Hardware Devices ****
card 0: AICA [AICA], device 0: AICA PCM [AICA PCM]
Subdevices: 1/1
Subdevice #0: subdevice #0
$ aplay -L
null
Discard all samples (playback) or generate zero samples (capture)
and as a result nothing plays:
$ aplay -d:hw0,0 /aine-email.wav
Playing WAVE '/aine-email.wav' : Unsigned 8 bit, Rate 8000 Hz, Mono
ALSA lib pcm_plug.c:773:(snd_pcm_plug_hw_refine_schange) Unable to
find an usable access for '(null)'
aplay: set_params:895: Access type not available
all the relevant files for an ordinary alsa install are about:
$ pwd
/usr/share/alsa
$ ls -l
-rw-r--r-- 1 default default 8611 Jan 3 23:45 alsa.conf
drwxr-xr-x 3 default default 4096 Jan 3 23:45 cards
drwxr-xr-x 2 default default 4096 Jan 3 23:45 pcm
-rw-r--r-- 1 default default 132 Jan 3 23:45 smixer.conf
-rw-r--r-- 1 default default 3205 Jan 3 23:45 sndo-mixer.alisp
drwxr-xr-x 2 default default 4096 Jan 2 20:26 speaker-test
But there are no configuration files for this device. And alsaconf
does not detect it - but then it's not PnP so that is no surprise.
In common with a typical embedded device the Dreamcast has a not very
sophisticated setup - built using an nfs-root mount and
busybox/buildroot.
What configuration files am I required to have to get alsa to work?
It's a fairly simple question I would have thought... how do I create
them and where do I put them?
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