1 /* 2 * Copyright (C) 2000 Takashi Iwai <tiwai@suse.de> 3 * 4 * Routines for control of EMU10K1 WaveTable synth 5 * 6 * This program is free software; you can redistribute it and/or modify 7 * it under the terms of the GNU General Public License as published by 8 * the Free Software Foundation; either version 2 of the License, or 9 * (at your option) any later version. 10 * 11 * This program is distributed in the hope that it will be useful, 12 * but WITHOUT ANY WARRANTY; without even the implied warranty of 13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14 * GNU General Public License for more details. 15 * 16 * You should have received a copy of the GNU General Public License 17 * along with this program; if not, write to the Free Software 18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 19 */ 20 21 #include "emu10k1_synth_local.h" 22 #include <linux/init.h> 23 #include <linux/module.h> 24 25 MODULE_AUTHOR("Takashi Iwai"); 26 MODULE_DESCRIPTION("Routines for control of EMU10K1 WaveTable synth"); 27 MODULE_LICENSE("GPL"); 28 29 /* 30 * create a new hardware dependent device for Emu10k1 31 */ 32 static int snd_emu10k1_synth_new_device(struct snd_seq_device *dev) 33 { 34 struct snd_emux *emux; 35 struct snd_emu10k1 *hw; 36 struct snd_emu10k1_synth_arg *arg; 37 unsigned long flags; 38 39 arg = SNDRV_SEQ_DEVICE_ARGPTR(dev); 40 if (arg == NULL) 41 return -EINVAL; 42 43 if (arg->seq_ports <= 0) 44 return 0; /* nothing */ 45 if (arg->max_voices < 1) 46 arg->max_voices = 1; 47 else if (arg->max_voices > 64) 48 arg->max_voices = 64; 49 50 if (snd_emux_new(&emux) < 0) 51 return -ENOMEM; 52 53 snd_emu10k1_ops_setup(emux); 54 hw = arg->hwptr; 55 emux->hw = hw; 56 emux->max_voices = arg->max_voices; 57 emux->num_ports = arg->seq_ports; 58 emux->pitch_shift = -501; 59 emux->memhdr = hw->memhdr; 60 /* maximum two ports */ 61 emux->midi_ports = arg->seq_ports < 2 ? arg->seq_ports : 2; 62 /* audigy has two external midis */ 63 emux->midi_devidx = hw->audigy ? 2 : 1; 64 emux->linear_panning = 0; 65 emux->hwdep_idx = 2; /* FIXED */ 66 67 if (snd_emux_register(emux, dev->card, arg->index, "Emu10k1") < 0) { 68 snd_emux_free(emux); 69 return -ENOMEM; 70 } 71 72 spin_lock_irqsave(&hw->voice_lock, flags); 73 hw->synth = emux; 74 hw->get_synth_voice = snd_emu10k1_synth_get_voice; 75 spin_unlock_irqrestore(&hw->voice_lock, flags); 76 77 dev->driver_data = emux; 78 79 return 0; 80 } 81 82 static int snd_emu10k1_synth_delete_device(struct snd_seq_device *dev) 83 { 84 struct snd_emux *emux; 85 struct snd_emu10k1 *hw; 86 unsigned long flags; 87 88 if (dev->driver_data == NULL) 89 return 0; /* not registered actually */ 90 91 emux = dev->driver_data; 92 93 hw = emux->hw; 94 spin_lock_irqsave(&hw->voice_lock, flags); 95 hw->synth = NULL; 96 hw->get_synth_voice = NULL; 97 spin_unlock_irqrestore(&hw->voice_lock, flags); 98 99 snd_emux_free(emux); 100 return 0; 101 } 102 103 /* 104 * INIT part 105 */ 106 107 static int __init alsa_emu10k1_synth_init(void) 108 { 109 110 static struct snd_seq_dev_ops ops = { 111 snd_emu10k1_synth_new_device, 112 snd_emu10k1_synth_delete_device, 113 }; 114 return snd_seq_device_register_driver(SNDRV_SEQ_DEV_ID_EMU10K1_SYNTH, &ops, 115 sizeof(struct snd_emu10k1_synth_arg)); 116 } 117 118 static void __exit alsa_emu10k1_synth_exit(void) 119 { 120 snd_seq_device_unregister_driver(SNDRV_SEQ_DEV_ID_EMU10K1_SYNTH); 121 } 122 123 module_init(alsa_emu10k1_synth_init) 124 module_exit(alsa_emu10k1_synth_exit) 125