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