linux-imx
Public
Source
committed fc5d3c70f97x
/* * Dummy soundcard for virtual rawmidi devices * * Copyright (c) 2000 by Takashi Iwai <tiwai@suse.de> * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA * *//* * VIRTUAL RAW MIDI DEVICE CARDS * * This dummy card contains up to 4 virtual rawmidi devices. * They are not real rawmidi devices but just associated with sequencer * clients, so that any input/output sources can be connected as a raw * MIDI device arbitrary. * Also, multiple access is allowed to a single rawmidi device. * * Typical usage is like following: * - Load snd-virmidi module. * # modprobe snd-virmidi index=2 * Then, sequencer clients 72:0 to 75:0 will be created, which are * mapped from /dev/snd/midiC1D0 to /dev/snd/midiC1D3, respectively. * * - Connect input/output via aconnect. * % aconnect 64:0 72:0 # keyboard input redirection 64:0 -> 72:0 * % aconnect 72:0 65:0 # output device redirection 72:0 -> 65:0 * * - Run application using a midi device (eg. /dev/snd/midiC1D0) *//* hack: OSS defines midi_devs, so undefine it (versioned symbols) */MODULE_AUTHOR("Takashi Iwai <tiwai@suse.de>");MODULE_DESCRIPTION("Dummy soundcard for virtual rawmidi devices");MODULE_LICENSE("GPL");MODULE_SUPPORTED_DEVICE("{{ALSA,Virtual rawmidi device}}");static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX; /* Index 0-MAX */static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR; /* ID for this card */static bool enable[SNDRV_CARDS] = {1, [1 ... (SNDRV_CARDS - 1)] = 0};static int midi_devs[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS - 1)] = 4};module_param_array(index, int, NULL, 0444);MODULE_PARM_DESC(index, "Index value for virmidi soundcard.");module_param_array(id, charp, NULL, 0444);MODULE_PARM_DESC(id, "ID string for virmidi soundcard.");module_param_array(enable, bool, NULL, 0444);MODULE_PARM_DESC(enable, "Enable this soundcard.");module_param_array(midi_devs, int, NULL, 0444);MODULE_PARM_DESC(midi_devs, "MIDI devices # (1-4)");struct snd_card_virmidi { struct snd_card *card; struct snd_rawmidi *midi[MAX_MIDI_DEVICES];};static struct platform_device *devices[SNDRV_CARDS];static int snd_virmidi_probe(struct platform_device *devptr){ struct snd_card *card; struct snd_card_virmidi *vmidi; int idx, err; int dev = devptr->id;