1// SPDX-License-Identifier: GPL-2.0-or-later
2/*
3 *  Copyright (C) 2000 Takashi Iwai <tiwai@suse.de>
4 *
5 *  Routines for control of EMU WaveTable chip
6 */
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/Emu10k1
23 */
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#endif
40	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	if (emu->ops.sample_new)
98		sf_cb.sample_new = sf_sample_new;
99	if (emu->ops.sample_free)
100		sf_cb.sample_free = sf_sample_free;
101	if (emu->ops.sample_reset)
102		sf_cb.sample_reset = sf_sample_reset;
103	emu->sflist = snd_sf_new(&sf_cb, emu->memhdr);
104	if (emu->sflist == NULL)
105		return -ENOMEM;
106
107	err = snd_emux_init_hwdep(emu);
108	if (err < 0)
109		return err;
110
111	snd_emux_init_voices(emu);
112
113	snd_emux_init_seq(emu, card, index);
114#if IS_ENABLED(CONFIG_SND_SEQUENCER_OSS)
115	snd_emux_init_seq_oss(emu);
116#endif
117	snd_emux_init_virmidi(emu, card);
118
119	snd_emux_proc_init(emu, card, index);
120	return 0;
121}
122
123EXPORT_SYMBOL(snd_emux_register);
124
125/*
126 */
127int snd_emux_free(struct snd_emux *emu)
128{
129	if (! emu)
130		return -EINVAL;
131
132	timer_shutdown_sync(&emu->tlist);
133
134	snd_emux_proc_free(emu);
135	snd_emux_delete_virmidi(emu);
136#if IS_ENABLED(CONFIG_SND_SEQUENCER_OSS)
137	snd_emux_detach_seq_oss(emu);
138#endif
139	snd_emux_detach_seq(emu);
140	snd_emux_delete_hwdep(emu);
141	snd_sf_free(emu->sflist);
142	kfree(emu->voices);
143	kfree_const(emu->name);
144	kfree(emu);
145	return 0;
146}
147
148EXPORT_SYMBOL(snd_emux_free);
149