At Sun, 7 Apr 2002 22:22:42 +0200 (CEST), Jaroslav wrote: > > On Thu, 4 Apr 2002, Peter Enderborg wrote: > > > Jaroslav Kysela wrote: > > > > > On Wed, 3 Apr 2002, Peter Enderborg wrote: > > > > > > > I have tryed to get some answer from Jaroslav about subdevices on midi. > > > > Im trying to write a driver for midisport 8x8/s and that have 9 midi > > > > ports. On my hack to figure out the protocol I use virmidi to handle the > > > > interface to alsa. But virmidi only have four subdevices per device. I > > > > > > You can set up to eight virmidi devices (snd_midi_devs parameter controls > > > this count). On rawmidi side, there is 16 rawmidi substreams (subdevices) > > > per one virmidi device. These subdevices are used for event merging > > > (write) and coping (read). On sequencer side, there is one client and > > > one port connected to virmidi device. > > > > > > > need to see the driver for a midi interface that using all the 16 > > > > subdevices. Since I don't get answer from Jaroslav i guess he don't have > > > > the time or my question is stupid. But can someone help me out? Where > > > > should I look? > > > > > > There are two ways: > > > > > > 1) we can add a new mode to virmidi code which suppress copying and > > > merging and connects more sequencer ports per a sequencer client > > > to rawmidi subdevices to handle such devices > > > 2) without any change - simply use more than one virmidi card and connect > > > your code to more clients: > > > > > > > That is what I do now. But it is not pretty. My plan is to do a real driver > > not a virmidi user. > > > > > > > > > > modprobe snd-virmidi snd_index=1,2 snd_enable=1,1 snd_midi_devs=8,8 > > > > > > (use index values as you wish) > > > > > > > Have you done that? This is what I get. > > > > [root@pescadero pme]# /sbin/modprobe snd-virmidi snd_enable=1,1 > > snd_midi_devs=8,8 > > /lib/modules/2.4.16/misc/snd-virmidi.o: init_module: No such device > > Hint: insmod errors can be caused by incorrect module parameters, including > > invalid IO or IRQ parameters > > /lib/modules/2.4.16/misc/snd-virmidi.o: insmod > > /lib/modules/2.4.16/misc/snd-virmidi.o failed > > /lib/modules/2.4.16/misc/snd-virmidi.o: insmod snd-virmidi failed > > Oops. I've fixed this problem in CVS. Change SNDRV_RAWMIDI_DEVICES in > alsa-kernel/include/rawmidi.h to 8.
in alsa-kernel/include/minors.h, #define SNDRV_MINOR_RAWMIDI 8 /* 8 - 11 */ #define SNDRV_MINOR_RAWMIDIS 4 #define SNDRV_MINOR_PCM_PLAYBACK 16 /* 16 - 23 */ so we need to change this too.. it seems no problem to assign 8 rawmidi devices - 8 devices are free, although the comment says 8 - 11.. Takashi _______________________________________________ Alsa-devel mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/alsa-devel
