1 /* 2 * Copyright (C) 2000 Takashi Iwai <tiwai@suse.de> 3 * 4 * Routines for control of EMU WaveTable chip 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 <sound/driver.h> 22 #include <linux/wait.h> 23 #include <linux/sched.h> 24 #include <linux/slab.h> 25 #include <linux/string.h> 26 #include <sound/core.h> 27 #include <sound/emux_synth.h> 28 #include <linux/init.h> 29 #include "emux_voice.h" 30 31 MODULE_AUTHOR("Takashi Iwai"); 32 MODULE_DESCRIPTION("Routines for control of EMU WaveTable chip"); 33 MODULE_LICENSE("GPL"); 34 35 /* 36 * create a new hardware dependent device for Emu8000/Emu10k1 37 */ 38 int snd_emux_new(struct snd_emux **remu) 39 { 40 struct snd_emux *emu; 41 42 *remu = NULL; 43 emu = kzalloc(sizeof(*emu), GFP_KERNEL); 44 if (emu == NULL) 45 return -ENOMEM; 46 47 spin_lock_init(&emu->voice_lock); 48 mutex_init(&emu->register_mutex); 49 50 emu->client = -1; 51 #ifdef CONFIG_SND_SEQUENCER_OSS 52 emu->oss_synth = NULL; 53 #endif 54 emu->max_voices = 0; 55 emu->use_time = 0; 56 57 init_timer(&emu->tlist); 58 emu->tlist.function = snd_emux_timer_callback; 59 emu->tlist.data = (unsigned long)emu; 60 emu->timer_active = 0; 61 62 *remu = emu; 63 return 0; 64 } 65 66 EXPORT_SYMBOL(snd_emux_new); 67 68 /* 69 */ 70 static int sf_sample_new(void *private_data, struct snd_sf_sample *sp, 71 struct snd_util_memhdr *hdr, 72 const void __user *buf, long count) 73 { 74 struct snd_emux *emu = private_data; 75 return emu->ops.sample_new(emu, sp, hdr, buf, count); 76 77 } 78 79 static int sf_sample_free(void *private_data, struct snd_sf_sample *sp, 80 struct snd_util_memhdr *hdr) 81 { 82 struct snd_emux *emu = private_data; 83 return emu->ops.sample_free(emu, sp, hdr); 84 85 } 86 87 static void sf_sample_reset(void *private_data) 88 { 89 struct snd_emux *emu = private_data; 90 emu->ops.sample_reset(emu); 91 } 92 93 int snd_emux_register(struct snd_emux *emu, struct snd_card *card, int index, char *name) 94 { 95 int err; 96 struct snd_sf_callback sf_cb; 97 98 snd_assert(emu->hw != NULL, return -EINVAL); 99 snd_assert(emu->max_voices > 0, return -EINVAL); 100 snd_assert(card != NULL, return -EINVAL); 101 snd_assert(name != NULL, return -EINVAL); 102 103 emu->card = card; 104 emu->name = kstrdup(name, GFP_KERNEL); 105 emu->voices = kcalloc(emu->max_voices, sizeof(struct snd_emux_voice), 106 GFP_KERNEL); 107 if (emu->voices == NULL) 108 return -ENOMEM; 109 110 /* create soundfont list */ 111 memset(&sf_cb, 0, sizeof(sf_cb)); 112 sf_cb.private_data = emu; 113 if (emu->ops.sample_new) 114 sf_cb.sample_new = sf_sample_new; 115 if (emu->ops.sample_free) 116 sf_cb.sample_free = sf_sample_free; 117 if (emu->ops.sample_reset) 118 sf_cb.sample_reset = sf_sample_reset; 119 emu->sflist = snd_sf_new(&sf_cb, emu->memhdr); 120 if (emu->sflist == NULL) 121 return -ENOMEM; 122 123 if ((err = snd_emux_init_hwdep(emu)) < 0) 124 return err; 125 126 snd_emux_init_voices(emu); 127 128 snd_emux_init_seq(emu, card, index); 129 #ifdef CONFIG_SND_SEQUENCER_OSS 130 snd_emux_init_seq_oss(emu); 131 #endif 132 snd_emux_init_virmidi(emu, card); 133 134 #ifdef CONFIG_PROC_FS 135 snd_emux_proc_init(emu, card, index); 136 #endif 137 return 0; 138 } 139 140 EXPORT_SYMBOL(snd_emux_register); 141 142 /* 143 */ 144 int snd_emux_free(struct snd_emux *emu) 145 { 146 unsigned long flags; 147 148 if (! emu) 149 return -EINVAL; 150 151 spin_lock_irqsave(&emu->voice_lock, flags); 152 if (emu->timer_active) 153 del_timer(&emu->tlist); 154 spin_unlock_irqrestore(&emu->voice_lock, flags); 155 156 #ifdef CONFIG_PROC_FS 157 snd_emux_proc_free(emu); 158 #endif 159 snd_emux_delete_virmidi(emu); 160 #ifdef CONFIG_SND_SEQUENCER_OSS 161 snd_emux_detach_seq_oss(emu); 162 #endif 163 snd_emux_detach_seq(emu); 164 165 snd_emux_delete_hwdep(emu); 166 167 if (emu->sflist) 168 snd_sf_free(emu->sflist); 169 170 kfree(emu->voices); 171 kfree(emu->name); 172 kfree(emu); 173 return 0; 174 } 175 176 EXPORT_SYMBOL(snd_emux_free); 177 178 179 /* 180 * INIT part 181 */ 182 183 static int __init alsa_emux_init(void) 184 { 185 return 0; 186 } 187 188 static void __exit alsa_emux_exit(void) 189 { 190 } 191 192 module_init(alsa_emux_init) 193 module_exit(alsa_emux_exit) 194