Re: [Alsa-user] RTC timer questions, reposting

[Jaroslav Kysela <perex@suse.cz>]

On Mon, 8 Apr 2002, Maarten de Boer wrote:

> Hello,
> 
> Sorry for being such a pain, but I really want this to work, and I
> really think this is something that has general interest: using a
> higher accurate midi event timing. So: HOW DO I USE THE RTC TIMER?
> I can find no up-to-date documentation about this.
> 
> The latest I find is a mail by Takashi, that is a year old, which says:
> 
> Installation:
> Add the following lines in /etc/modules.conf:
> options snd-timer snd_timer_limit=2
> alias snd-timer-1 snd-rtctimer
> For using RTC timer in sequencer as default:
> options snd-seq snd_seq_default_timer=1
> 
> This is not working anymore, because parameters changed.
> 
> Starting sound driver: snd-emu10k1 done
> /lib/modules/2.4.18/kernel/sound/acore/seq/snd-seq.o: invalid parameter parm_snd_seq_default_timer
> /lib/modules/2.4.18/kernel/sound/acore/seq/snd-seq.o: insmod /lib/modules/2.4.18/kernel/sound/acore/seq/snd-seq.o failed
> /lib/modules/2.4.18/kernel/sound/acore/seq/snd-seq.o: invalid parameter parm_snd_seq_default_timer
> /lib/modules/2.4.18/kernel/sound/acore/seq/snd-seq.o: insmod /lib/modules/2.4.18/kernel/sound/acore/seq/snd-seq.o failed
> /lib/modules/2.4.18/kernel/sound/acore/seq/snd-seq.o: insmod snd-seq-midi failed
> 
> So, please tell me how it works. If I can get it to work, I would not mind 
> writing some documentation about it, but please help me out!

The defines are in asound.h file - look for 'Timer section - /dev/snd/timer'.

Usage (using defaults):

	options snd-seq snd_seq_default_timer_device=1

or (full specification):

	options snd-seq snd_seq_default_timer_class=1 \
			snd_seq_default_timer_sclass=0 \
			snd_seq_default_timer_card=-1 \
			snd_seq_default_timer_device=1 \
			snd_seq_default_timer_subdevice=0

						Jaroslav

-----
Jaroslav Kysela <perex@suse.cz>
Linux Kernel Sound Maintainer
ALSA Project  http://www.alsa-project.org
SuSE Linux    http://www.suse.com