| // SPDX-License-Identifier: GPL-2.0-or-later |
| /* |
| * Copyright (C) 2000 Takashi Iwai <tiwai@suse.de> |
| * |
| * Routines for control of EMU WaveTable chip |
| */ |
| |
| #include <linux/wait.h> |
| #include <linux/slab.h> |
| #include <linux/string.h> |
| #include <sound/core.h> |
| #include <sound/emux_synth.h> |
| #include <linux/init.h> |
| #include <linux/module.h> |
| #include "emux_voice.h" |
| |
| MODULE_AUTHOR("Takashi Iwai"); |
| MODULE_DESCRIPTION("Routines for control of EMU WaveTable chip"); |
| MODULE_LICENSE("GPL"); |
| |
| /* |
| * create a new hardware dependent device for Emu8000/Emu10k1 |
| */ |
| int snd_emux_new(struct snd_emux **remu) |
| { |
| struct snd_emux *emu; |
| |
| *remu = NULL; |
| emu = kzalloc(sizeof(*emu), GFP_KERNEL); |
| if (emu == NULL) |
| return -ENOMEM; |
| |
| spin_lock_init(&emu->voice_lock); |
| mutex_init(&emu->register_mutex); |
| |
| emu->client = -1; |
| #if IS_ENABLED(CONFIG_SND_SEQUENCER_OSS) |
| emu->oss_synth = NULL; |
| #endif |
| emu->max_voices = 0; |
| emu->use_time = 0; |
| |
| timer_setup(&emu->tlist, snd_emux_timer_callback, 0); |
| emu->timer_active = 0; |
| |
| *remu = emu; |
| return 0; |
| } |
| |
| EXPORT_SYMBOL(snd_emux_new); |
| |
| /* |
| */ |
| static int sf_sample_new(void *private_data, struct snd_sf_sample *sp, |
| struct snd_util_memhdr *hdr, |
| const void __user *buf, long count) |
| { |
| struct snd_emux *emu = private_data; |
| return emu->ops.sample_new(emu, sp, hdr, buf, count); |
| |
| } |
| |
| static int sf_sample_free(void *private_data, struct snd_sf_sample *sp, |
| struct snd_util_memhdr *hdr) |
| { |
| struct snd_emux *emu = private_data; |
| return emu->ops.sample_free(emu, sp, hdr); |
| |
| } |
| |
| static void sf_sample_reset(void *private_data) |
| { |
| struct snd_emux *emu = private_data; |
| emu->ops.sample_reset(emu); |
| } |
| |
| int snd_emux_register(struct snd_emux *emu, struct snd_card *card, int index, char *name) |
| { |
| int err; |
| struct snd_sf_callback sf_cb; |
| |
| if (snd_BUG_ON(!emu->hw || emu->max_voices <= 0)) |
| return -EINVAL; |
| if (snd_BUG_ON(!card || !name)) |
| return -EINVAL; |
| |
| emu->card = card; |
| emu->name = kstrdup(name, GFP_KERNEL); |
| emu->voices = kcalloc(emu->max_voices, sizeof(struct snd_emux_voice), |
| GFP_KERNEL); |
| if (emu->voices == NULL) |
| return -ENOMEM; |
| |
| /* create soundfont list */ |
| memset(&sf_cb, 0, sizeof(sf_cb)); |
| sf_cb.private_data = emu; |
| if (emu->ops.sample_new) |
| sf_cb.sample_new = sf_sample_new; |
| if (emu->ops.sample_free) |
| sf_cb.sample_free = sf_sample_free; |
| if (emu->ops.sample_reset) |
| sf_cb.sample_reset = sf_sample_reset; |
| emu->sflist = snd_sf_new(&sf_cb, emu->memhdr); |
| if (emu->sflist == NULL) |
| return -ENOMEM; |
| |
| err = snd_emux_init_hwdep(emu); |
| if (err < 0) |
| return err; |
| |
| snd_emux_init_voices(emu); |
| |
| snd_emux_init_seq(emu, card, index); |
| #if IS_ENABLED(CONFIG_SND_SEQUENCER_OSS) |
| snd_emux_init_seq_oss(emu); |
| #endif |
| snd_emux_init_virmidi(emu, card); |
| |
| snd_emux_proc_init(emu, card, index); |
| return 0; |
| } |
| |
| EXPORT_SYMBOL(snd_emux_register); |
| |
| /* |
| */ |
| int snd_emux_free(struct snd_emux *emu) |
| { |
| unsigned long flags; |
| |
| if (! emu) |
| return -EINVAL; |
| |
| spin_lock_irqsave(&emu->voice_lock, flags); |
| if (emu->timer_active) |
| del_timer(&emu->tlist); |
| spin_unlock_irqrestore(&emu->voice_lock, flags); |
| |
| snd_emux_proc_free(emu); |
| snd_emux_delete_virmidi(emu); |
| #if IS_ENABLED(CONFIG_SND_SEQUENCER_OSS) |
| snd_emux_detach_seq_oss(emu); |
| #endif |
| snd_emux_detach_seq(emu); |
| snd_emux_delete_hwdep(emu); |
| snd_sf_free(emu->sflist); |
| kfree(emu->voices); |
| kfree(emu->name); |
| kfree(emu); |
| return 0; |
| } |
| |
| EXPORT_SYMBOL(snd_emux_free); |