On Thu, 7 Dec 2006, James Courtier-Dutton wrote: > Hi, > > How much work would it be to get alsa driver to work nicely with udev, > so that a specific udev config could be used to decide which sound card > is card 0 etc. > How about a global config interface whereby userland processes could > modify the sound card order and possibly provide other general sound > card related services to userspace. In this way, even if a sound card > booted up as card 0, we could swap it with card 1 without having to > unload it. > This might require the device naming in /dev/snd to change so that the > card number was not included in the device name. Maybe use an extra > subdirectory for each card, much like the /proc filesystem uses. Hi, my idea was a bit different. We have card id (aka text alias) already. They are fully supported in alsa-lib. So, only missing thing is to change these aliases and to use these aliases in application configurations rather than card numbers. I had already a discussion with Greg on LKML and in mm tree (I think) are patches to create a soundcard class. We can put card id (alias) to this class with read/write priviledges. So udev can freely change it like network device names. I think it could be in 2.6.20. Jaroslav ----- Jaroslav Kysela <perex@xxxxxxx> Linux Kernel Sound Maintainer ALSA Project, SUSE Labs ------------------------------------------------------------------------- Take Surveys. Earn Cash. Influence the Future of IT Join SourceForge.net's Techsay panel and you'll get the chance to share your opinions on IT & business topics through brief surveys - and earn cash http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV _______________________________________________ Alsa-devel mailing list Alsa-devel@xxxxxxxxxxxxxxxxxxxxx https://lists.sourceforge.net/lists/listinfo/alsa-devel
