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
17 MODULE_AUTHOR("Takashi Iwai");
18 MODULE_DESCRIPTION("Routines for control of EMU WaveTable chip");
19 MODULE_LICENSE("GPL");
20
21 /*
22 * create a new hardware dependent device for Emu8000/Emu10k1
23 */
snd_emux_new(struct snd_emux ** remu)24 int 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
50 EXPORT_SYMBOL(snd_emux_new);
51
52 /*
53 */
sf_sample_new(void * private_data,struct snd_sf_sample * sp,struct snd_util_memhdr * hdr,const void __user * buf,long count)54 static 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
sf_sample_free(void * private_data,struct snd_sf_sample * sp,struct snd_util_memhdr * hdr)63 static 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
sf_sample_reset(void * private_data)71 static void sf_sample_reset(void *private_data)
72 {
73 struct snd_emux *emu = private_data;
74 emu->ops.sample_reset(emu);
75 }
76
snd_emux_register(struct snd_emux * emu,struct snd_card * card,int index,char * name)77 int 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(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
123 EXPORT_SYMBOL(snd_emux_register);
124
125 /*
126 */
snd_emux_free(struct snd_emux * emu)127 int 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(emu->name);
144 kfree(emu);
145 return 0;
146 }
147
148 EXPORT_SYMBOL(snd_emux_free);
149