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Diffstat (limited to 'sound/isa/sb/emu8000_synth.c')
| -rw-r--r-- | sound/isa/sb/emu8000_synth.c | 134 |
1 files changed, 134 insertions, 0 deletions
diff --git a/sound/isa/sb/emu8000_synth.c b/sound/isa/sb/emu8000_synth.c new file mode 100644 index 000000000000..1f63aa52d596 --- /dev/null +++ b/sound/isa/sb/emu8000_synth.c @@ -0,0 +1,134 @@ +/* + * Copyright (c) by Jaroslav Kysela <perex@suse.cz> + * and (c) 1999 Steve Ratcliffe <steve@parabola.demon.co.uk> + * Copyright (C) 1999-2000 Takashi Iwai <tiwai@suse.de> + * + * Emu8000 synth plug-in routine + * + * 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 "emu8000_local.h" +#include <linux/init.h> +#include <sound/initval.h> + +MODULE_AUTHOR("Takashi Iwai, Steve Ratcliffe"); +MODULE_DESCRIPTION("Emu8000 synth plug-in routine"); +MODULE_LICENSE("GPL"); + +/*----------------------------------------------------------------*/ + +/* + * create a new hardware dependent device for Emu8000 + */ +static int snd_emu8000_new_device(snd_seq_device_t *dev) +{ + emu8000_t *hw; + snd_emux_t *emu; + + hw = *(emu8000_t**)SNDRV_SEQ_DEVICE_ARGPTR(dev); + if (hw == NULL) + return -EINVAL; + + if (hw->emu) + return -EBUSY; /* already exists..? */ + + if (snd_emux_new(&emu) < 0) + return -ENOMEM; + + hw->emu = emu; + snd_emu8000_ops_setup(hw); + + emu->hw = hw; + emu->max_voices = EMU8000_DRAM_VOICES; + emu->num_ports = hw->seq_ports; + + if (hw->memhdr) { + snd_printk("memhdr is already initialized!?\n"); + snd_util_memhdr_free(hw->memhdr); + } + hw->memhdr = snd_util_memhdr_new(hw->mem_size); + if (hw->memhdr == NULL) { + snd_emux_free(emu); + hw->emu = NULL; + return -ENOMEM; + } + + emu->memhdr = hw->memhdr; + emu->midi_ports = hw->seq_ports < 2 ? hw->seq_ports : 2; /* number of virmidi ports */ + emu->midi_devidx = 1; + emu->linear_panning = 1; + emu->hwdep_idx = 2; /* FIXED */ + + if (snd_emux_register(emu, dev->card, hw->index, "Emu8000") < 0) { + snd_emux_free(emu); + snd_util_memhdr_free(hw->memhdr); + hw->emu = NULL; + hw->memhdr = NULL; + return -ENOMEM; + } + + if (hw->mem_size > 0) + snd_emu8000_pcm_new(dev->card, hw, 1); + + dev->driver_data = hw; + + return 0; +} + + +/* + * free all resources + */ +static int snd_emu8000_delete_device(snd_seq_device_t *dev) +{ + emu8000_t *hw; + + if (dev->driver_data == NULL) + return 0; /* no synth was allocated actually */ + + hw = dev->driver_data; + if (hw->pcm) + snd_device_free(dev->card, hw->pcm); + if (hw->emu) + snd_emux_free(hw->emu); + if (hw->memhdr) + snd_util_memhdr_free(hw->memhdr); + hw->emu = NULL; + hw->memhdr = NULL; + return 0; +} + +/* + * INIT part + */ + +static int __init alsa_emu8000_init(void) +{ + + static snd_seq_dev_ops_t ops = { + snd_emu8000_new_device, + snd_emu8000_delete_device, + }; + return snd_seq_device_register_driver(SNDRV_SEQ_DEV_ID_EMU8000, &ops, sizeof(emu8000_t*)); +} + +static void __exit alsa_emu8000_exit(void) +{ + snd_seq_device_unregister_driver(SNDRV_SEQ_DEV_ID_EMU8000); +} + +module_init(alsa_emu8000_init) +module_exit(alsa_emu8000_exit) |