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 24 MODULE_AUTHOR("Takashi Iwai"); 25 MODULE_DESCRIPTION("Routines for control of EMU10K1 WaveTable synth"); 26 MODULE_LICENSE("GPL"); 27 28 /* 29 * create a new hardware dependent device for Emu10k1 30 */ 31 static int snd_emu10k1_synth_new_device(struct snd_seq_device *dev) 32 { 33 struct snd_emux *emu; 34 struct snd_emu10k1 *hw; 35 struct snd_emu10k1_synth_arg *arg; 36 unsigned long flags; 37 38 arg = SNDRV_SEQ_DEVICE_ARGPTR(dev); 39 if (arg == NULL) 40 return -EINVAL; 41 42 if (arg->seq_ports <= 0) 43 return 0; /* nothing */ 44 if (arg->max_voices < 1) 45 arg->max_voices = 1; 46 else if (arg->max_voices > 64) 47 arg->max_voices = 64; 48 49 if (snd_emux_new(&emu) < 0) 50 return -ENOMEM; 51 52 snd_emu10k1_ops_setup(emu); 53 emu->hw = hw = arg->hwptr; 54 emu->max_voices = arg->max_voices; 55 emu->num_ports = arg->seq_ports; 56 emu->pitch_shift = -501; 57 emu->memhdr = hw->memhdr; 58 emu->midi_ports = arg->seq_ports < 2 ? arg->seq_ports : 2; /* maximum two ports */ 59 emu->midi_devidx = hw->audigy ? 2 : 1; /* audigy has two external midis */ 60 emu->linear_panning = 0; 61 emu->hwdep_idx = 2; /* FIXED */ 62 63 if (snd_emux_register(emu, dev->card, arg->index, "Emu10k1") < 0) { 64 snd_emux_free(emu); 65 return -ENOMEM; 66 } 67 68 spin_lock_irqsave(&hw->voice_lock, flags); 69 hw->synth = emu; 70 hw->get_synth_voice = snd_emu10k1_synth_get_voice; 71 spin_unlock_irqrestore(&hw->voice_lock, flags); 72 73 dev->driver_data = emu; 74 75 return 0; 76 } 77 78 static int snd_emu10k1_synth_delete_device(struct snd_seq_device *dev) 79 { 80 struct snd_emux *emu; 81 struct snd_emu10k1 *hw; 82 unsigned long flags; 83 84 if (dev->driver_data == NULL) 85 return 0; /* not registered actually */ 86 87 emu = dev->driver_data; 88 89 hw = emu->hw; 90 spin_lock_irqsave(&hw->voice_lock, flags); 91 hw->synth = NULL; 92 hw->get_synth_voice = NULL; 93 spin_unlock_irqrestore(&hw->voice_lock, flags); 94 95 snd_emux_free(emu); 96 return 0; 97 } 98 99 /* 100 * INIT part 101 */ 102 103 static int __init alsa_emu10k1_synth_init(void) 104 { 105 106 static struct snd_seq_dev_ops ops = { 107 snd_emu10k1_synth_new_device, 108 snd_emu10k1_synth_delete_device, 109 }; 110 return snd_seq_device_register_driver(SNDRV_SEQ_DEV_ID_EMU10K1_SYNTH, &ops, 111 sizeof(struct snd_emu10k1_synth_arg)); 112 } 113 114 static void __exit alsa_emu10k1_synth_exit(void) 115 { 116 snd_seq_device_unregister_driver(SNDRV_SEQ_DEV_ID_EMU10K1_SYNTH); 117 } 118 119 module_init(alsa_emu10k1_synth_init) 120 module_exit(alsa_emu10k1_synth_exit) 121