diff options
Diffstat (limited to 'sound/pci/emu10k1/emu10k1_synth.c')
| -rw-r--r-- | sound/pci/emu10k1/emu10k1_synth.c | 124 |
1 files changed, 124 insertions, 0 deletions
diff --git a/sound/pci/emu10k1/emu10k1_synth.c b/sound/pci/emu10k1/emu10k1_synth.c new file mode 100644 index 00000000..4c41c903 --- /dev/null +++ b/sound/pci/emu10k1/emu10k1_synth.c @@ -0,0 +1,124 @@ +/* + * Copyright (C) 2000 Takashi Iwai <tiwai@suse.de> + * + * Routines for control of EMU10K1 WaveTable synth + * + * 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 + */ + +#include "emu10k1_synth_local.h" +#include <linux/init.h> +#include <linux/module.h> + +MODULE_AUTHOR("Takashi Iwai"); +MODULE_DESCRIPTION("Routines for control of EMU10K1 WaveTable synth"); +MODULE_LICENSE("GPL"); + +/* + * create a new hardware dependent device for Emu10k1 + */ +static int snd_emu10k1_synth_new_device(struct snd_seq_device *dev) +{ + struct snd_emux *emux; + struct snd_emu10k1 *hw; + struct snd_emu10k1_synth_arg *arg; + unsigned long flags; + + arg = SNDRV_SEQ_DEVICE_ARGPTR(dev); + if (arg == NULL) + return -EINVAL; + + if (arg->seq_ports <= 0) + return 0; /* nothing */ + if (arg->max_voices < 1) + arg->max_voices = 1; + else if (arg->max_voices > 64) + arg->max_voices = 64; + + if (snd_emux_new(&emux) < 0) + return -ENOMEM; + + snd_emu10k1_ops_setup(emux); + hw = arg->hwptr; + emux->hw = hw; + emux->max_voices = arg->max_voices; + emux->num_ports = arg->seq_ports; + emux->pitch_shift = -501; + emux->memhdr = hw->memhdr; + /* maximum two ports */ + emux->midi_ports = arg->seq_ports < 2 ? arg->seq_ports : 2; + /* audigy has two external midis */ + emux->midi_devidx = hw->audigy ? 2 : 1; + emux->linear_panning = 0; + emux->hwdep_idx = 2; /* FIXED */ + + if (snd_emux_register(emux, dev->card, arg->index, "Emu10k1") < 0) { + snd_emux_free(emux); + return -ENOMEM; + } + + spin_lock_irqsave(&hw->voice_lock, flags); + hw->synth = emux; + hw->get_synth_voice = snd_emu10k1_synth_get_voice; + spin_unlock_irqrestore(&hw->voice_lock, flags); + + dev->driver_data = emux; + + return 0; +} + +static int snd_emu10k1_synth_delete_device(struct snd_seq_device *dev) +{ + struct snd_emux *emux; + struct snd_emu10k1 *hw; + unsigned long flags; + + if (dev->driver_data == NULL) + return 0; /* not registered actually */ + + emux = dev->driver_data; + + hw = emux->hw; + spin_lock_irqsave(&hw->voice_lock, flags); + hw->synth = NULL; + hw->get_synth_voice = NULL; + spin_unlock_irqrestore(&hw->voice_lock, flags); + + snd_emux_free(emux); + return 0; +} + +/* + * INIT part + */ + +static int __init alsa_emu10k1_synth_init(void) +{ + + static struct snd_seq_dev_ops ops = { + snd_emu10k1_synth_new_device, + snd_emu10k1_synth_delete_device, + }; + return snd_seq_device_register_driver(SNDRV_SEQ_DEV_ID_EMU10K1_SYNTH, &ops, + sizeof(struct snd_emu10k1_synth_arg)); +} + +static void __exit alsa_emu10k1_synth_exit(void) +{ + snd_seq_device_unregister_driver(SNDRV_SEQ_DEV_ID_EMU10K1_SYNTH); +} + +module_init(alsa_emu10k1_synth_init) +module_exit(alsa_emu10k1_synth_exit) |