On Wed, 6 Nov 2002, Paul Davis wrote:
> >> > ALSA:
> >> > cat /proc/asound/devices shows only one raw midi interface. This is on
> >> > a two port device (but Muse lets me select either port). On the older
> >> > alsa two devices show up on the listing.
> >>
> >> For multiport interfaces, the additional ports are available as subdevices
> >> of the rawmidi device, i.e. hw:1,0,0 and hw:1,0,1. (This is the same
> >> behaviour as with other multiport interfaces, i.e. snd-mtpav and
> >> snd-serial-u16550.)
> >
> >I understand the backwards compatibility bit, but it still looks wrong to
> >me. AFAIK (maybe there are other uses) subdevices are only used in
> >soundcard pcm outputs when the underlying hardware is capable of multiple
> >opens on the same output port (hardware mixing). So the behavior of midi
> >ports in inconsistent with the behavior of audio ports. They are two
> >completely independent hardware i/o ports, it looks to me like they should
> >be two devices, not one.
>
> i'm with fernando on this one. if consistency is the goal, and i think
> it should be, then multiport MIDI devices should appear as multiple
> ports, not subdevices.
We have no minor numbers for direct addressing of tenths rawmidi devices.
Jaroslav
-----
Jaroslav Kysela <[EMAIL PROTECTED]>
Linux Kernel Sound Maintainer
ALSA Project http://www.alsa-project.org
SuSE Linux http://www.suse.com
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