147 lines · c
1// SPDX-License-Identifier: GPL-2.0-or-later2/*3 * Copyright (C) 2000 Takashi Iwai <tiwai@suse.de>4 *5 * Routines for control of EMU WaveTable chip6 */7 8#include <linux/wait.h>9#include <linux/slab.h>10#include <linux/string.h>11#include <sound/core.h>12#include <sound/emux_synth.h>13#include <linux/init.h>14#include <linux/module.h>15#include "emux_voice.h"16 17MODULE_AUTHOR("Takashi Iwai");18MODULE_DESCRIPTION("Routines for control of EMU WaveTable chip");19MODULE_LICENSE("GPL");20 21/*22 * create a new hardware dependent device for Emu8000/Emu10k123 */24int snd_emux_new(struct snd_emux **remu)25{26 struct snd_emux *emu;27 28 *remu = NULL;29 emu = kzalloc(sizeof(*emu), GFP_KERNEL);30 if (emu == NULL)31 return -ENOMEM;32 33 spin_lock_init(&emu->voice_lock);34 mutex_init(&emu->register_mutex);35 36 emu->client = -1;37#if IS_ENABLED(CONFIG_SND_SEQUENCER_OSS)38 emu->oss_synth = NULL;39#endif40 emu->max_voices = 0;41 emu->use_time = 0;42 43 timer_setup(&emu->tlist, snd_emux_timer_callback, 0);44 emu->timer_active = 0;45 46 *remu = emu;47 return 0;48}49 50EXPORT_SYMBOL(snd_emux_new);51 52/*53 */54static int sf_sample_new(void *private_data, struct snd_sf_sample *sp,55 struct snd_util_memhdr *hdr,56 const void __user *buf, long count)57{58 struct snd_emux *emu = private_data;59 return emu->ops.sample_new(emu, sp, hdr, buf, count);60 61}62 63static int sf_sample_free(void *private_data, struct snd_sf_sample *sp,64 struct snd_util_memhdr *hdr)65{66 struct snd_emux *emu = private_data;67 return emu->ops.sample_free(emu, sp, hdr);68 69}70 71static void sf_sample_reset(void *private_data)72{73 struct snd_emux *emu = private_data;74 emu->ops.sample_reset(emu);75}76 77int snd_emux_register(struct snd_emux *emu, struct snd_card *card, int index, char *name)78{79 int err;80 struct snd_sf_callback sf_cb;81 82 if (snd_BUG_ON(!emu->hw || emu->max_voices <= 0))83 return -EINVAL;84 if (snd_BUG_ON(!card || !name))85 return -EINVAL;86 87 emu->card = card;88 emu->name = kstrdup_const(name, GFP_KERNEL);89 emu->voices = kcalloc(emu->max_voices, sizeof(struct snd_emux_voice),90 GFP_KERNEL);91 if (emu->name == NULL || emu->voices == NULL)92 return -ENOMEM;93 94 /* create soundfont list */95 memset(&sf_cb, 0, sizeof(sf_cb));96 sf_cb.private_data = emu;97 sf_cb.sample_new = sf_sample_new;98 sf_cb.sample_free = sf_sample_free;99 if (emu->ops.sample_reset)100 sf_cb.sample_reset = sf_sample_reset;101 emu->sflist = snd_sf_new(&sf_cb, emu->memhdr);102 if (emu->sflist == NULL)103 return -ENOMEM;104 105 err = snd_emux_init_hwdep(emu);106 if (err < 0)107 return err;108 109 snd_emux_init_voices(emu);110 111 snd_emux_init_seq(emu, card, index);112#if IS_ENABLED(CONFIG_SND_SEQUENCER_OSS)113 snd_emux_init_seq_oss(emu);114#endif115 snd_emux_init_virmidi(emu, card);116 117 snd_emux_proc_init(emu, card, index);118 return 0;119}120 121EXPORT_SYMBOL(snd_emux_register);122 123/*124 */125int snd_emux_free(struct snd_emux *emu)126{127 if (! emu)128 return -EINVAL;129 130 timer_shutdown_sync(&emu->tlist);131 132 snd_emux_proc_free(emu);133 snd_emux_delete_virmidi(emu);134#if IS_ENABLED(CONFIG_SND_SEQUENCER_OSS)135 snd_emux_detach_seq_oss(emu);136#endif137 snd_emux_detach_seq(emu);138 snd_emux_delete_hwdep(emu);139 snd_sf_free(emu->sflist);140 kfree(emu->voices);141 kfree_const(emu->name);142 kfree(emu);143 return 0;144}145 146EXPORT_SYMBOL(snd_emux_free);147