v4.19.13 snapshot.
diff --git a/sound/synth/emux/emux.c b/sound/synth/emux/emux.c
new file mode 100644
index 0000000..64f3141
--- /dev/null
+++ b/sound/synth/emux/emux.c
@@ -0,0 +1,165 @@
+/*
+ * Copyright (C) 2000 Takashi Iwai <tiwai@suse.de>
+ *
+ * Routines for control of EMU WaveTable chip
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+#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;
+
+ if ((err = snd_emux_init_hwdep(emu)) < 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);