1 /* 2 * Copyright (c) by Jaroslav Kysela <perex@perex.cz> 3 * and (c) 1999 Steve Ratcliffe <steve@parabola.demon.co.uk> 4 * Copyright (C) 1999-2000 Takashi Iwai <tiwai@suse.de> 5 * 6 * Emu8000 synth plug-in routine 7 * 8 * This program is free software; you can redistribute it and/or modify 9 * it under the terms of the GNU General Public License as published by 10 * the Free Software Foundation; either version 2 of the License, or 11 * (at your option) any later version. 12 * 13 * This program is distributed in the hope that it will be useful, 14 * but WITHOUT ANY WARRANTY; without even the implied warranty of 15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 16 * GNU General Public License for more details. 17 * 18 * You should have received a copy of the GNU General Public License 19 * along with this program; if not, write to the Free Software 20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 21 */ 22 23 #include "emu8000_local.h" 24 #include <linux/init.h> 25 #include <sound/initval.h> 26 27 MODULE_AUTHOR("Takashi Iwai, Steve Ratcliffe"); 28 MODULE_DESCRIPTION("Emu8000 synth plug-in routine"); 29 MODULE_LICENSE("GPL"); 30 31 /*----------------------------------------------------------------*/ 32 33 /* 34 * create a new hardware dependent device for Emu8000 35 */ 36 static int snd_emu8000_new_device(struct snd_seq_device *dev) 37 { 38 struct snd_emu8000 *hw; 39 struct snd_emux *emu; 40 41 hw = *(struct snd_emu8000**)SNDRV_SEQ_DEVICE_ARGPTR(dev); 42 if (hw == NULL) 43 return -EINVAL; 44 45 if (hw->emu) 46 return -EBUSY; /* already exists..? */ 47 48 if (snd_emux_new(&emu) < 0) 49 return -ENOMEM; 50 51 hw->emu = emu; 52 snd_emu8000_ops_setup(hw); 53 54 emu->hw = hw; 55 emu->max_voices = EMU8000_DRAM_VOICES; 56 emu->num_ports = hw->seq_ports; 57 58 if (hw->memhdr) { 59 snd_printk(KERN_ERR "memhdr is already initialized!?\n"); 60 snd_util_memhdr_free(hw->memhdr); 61 } 62 hw->memhdr = snd_util_memhdr_new(hw->mem_size); 63 if (hw->memhdr == NULL) { 64 snd_emux_free(emu); 65 hw->emu = NULL; 66 return -ENOMEM; 67 } 68 69 emu->memhdr = hw->memhdr; 70 emu->midi_ports = hw->seq_ports < 2 ? hw->seq_ports : 2; /* number of virmidi ports */ 71 emu->midi_devidx = 1; 72 emu->linear_panning = 1; 73 emu->hwdep_idx = 2; /* FIXED */ 74 75 if (snd_emux_register(emu, dev->card, hw->index, "Emu8000") < 0) { 76 snd_emux_free(emu); 77 snd_util_memhdr_free(hw->memhdr); 78 hw->emu = NULL; 79 hw->memhdr = NULL; 80 return -ENOMEM; 81 } 82 83 if (hw->mem_size > 0) 84 snd_emu8000_pcm_new(dev->card, hw, 1); 85 86 dev->driver_data = hw; 87 88 return 0; 89 } 90 91 92 /* 93 * free all resources 94 */ 95 static int snd_emu8000_delete_device(struct snd_seq_device *dev) 96 { 97 struct snd_emu8000 *hw; 98 99 if (dev->driver_data == NULL) 100 return 0; /* no synth was allocated actually */ 101 102 hw = dev->driver_data; 103 if (hw->pcm) 104 snd_device_free(dev->card, hw->pcm); 105 if (hw->emu) 106 snd_emux_free(hw->emu); 107 if (hw->memhdr) 108 snd_util_memhdr_free(hw->memhdr); 109 hw->emu = NULL; 110 hw->memhdr = NULL; 111 return 0; 112 } 113 114 /* 115 * INIT part 116 */ 117 118 static int __init alsa_emu8000_init(void) 119 { 120 121 static struct snd_seq_dev_ops ops = { 122 snd_emu8000_new_device, 123 snd_emu8000_delete_device, 124 }; 125 return snd_seq_device_register_driver(SNDRV_SEQ_DEV_ID_EMU8000, &ops, 126 sizeof(struct snd_emu8000*)); 127 } 128 129 static void __exit alsa_emu8000_exit(void) 130 { 131 snd_seq_device_unregister_driver(SNDRV_SEQ_DEV_ID_EMU8000); 132 } 133 134 module_init(alsa_emu8000_init) 135 module_exit(alsa_emu8000_exit) 136