1 /*
2 * Copyright (C) 2000 Takashi Iwai <tiwai@suse.de>
3 *
4 * Routines for control of EMU10K1 WaveTable synth
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 "emu10k1_synth_local.h"
22 #include <linux/init.h>
23
24 MODULE_AUTHOR("Takashi Iwai");
25 MODULE_DESCRIPTION("Routines for control of EMU10K1 WaveTable synth");
26 MODULE_LICENSE("GPL");
27
28 /*
29 * create a new hardware dependent device for Emu10k1
30 */
31 static int snd_emu10k1_synth_new_device(struct snd_seq_device *dev)
32 {
33 struct snd_emux *emux;
34 struct snd_emu10k1 *hw;
35 struct snd_emu10k1_synth_arg *arg;
36 unsigned long flags;
37
38 arg = SNDRV_SEQ_DEVICE_ARGPTR(dev);
39 if (arg == NULL)
40 return -EINVAL;
41
42 if (arg->seq_ports <= 0)
43 return 0; /* nothing */
44 if (arg->max_voices < 1)
45 arg->max_voices = 1;
46 else if (arg->max_voices > 64)
47 arg->max_voices = 64;
48
49 if (snd_emux_new(&emux) < 0)
50 return -ENOMEM;
51
52 snd_emu10k1_ops_setup(emux);
53 hw = arg->hwptr;
54 emux->hw = hw;
55 emux->max_voices = arg->max_voices;
56 emux->num_ports = arg->seq_ports;
57 emux->pitch_shift = -501;
58 emux->memhdr = hw->memhdr;
59 /* maximum two ports */
60 emux->midi_ports = arg->seq_ports < 2 ? arg->seq_ports : 2;
61 /* audigy has two external midis */
62 emux->midi_devidx = hw->audigy ? 2 : 1;
63 emux->linear_panning = 0;
64 emux->hwdep_idx = 2; /* FIXED */
65
66 if (snd_emux_register(emux, dev->card, arg->index, "Emu10k1") < 0) {
67 snd_emux_free(emux);
68 return -ENOMEM;
69 }
70
71 spin_lock_irqsave(&hw->voice_lock, flags);
72 hw->synth = emux;
73 hw->get_synth_voice = snd_emu10k1_synth_get_voice;
74 spin_unlock_irqrestore(&hw->voice_lock, flags);
75
76 dev->driver_data = emux;
77
78 return 0;
79 }
80
81 static int snd_emu10k1_synth_delete_device(struct snd_seq_device *dev)
82 {
83 struct snd_emux *emux;
84 struct snd_emu10k1 *hw;
85 unsigned long flags;
86
87 if (dev->driver_data == NULL)
88 return 0; /* not registered actually */
89
90 emux = dev->driver_data;
91
92 hw = emux->hw;
93 spin_lock_irqsave(&hw->voice_lock, flags);
94 hw->synth = NULL;
95 hw->get_synth_voice = NULL;
96 spin_unlock_irqrestore(&hw->voice_lock, flags);
97
98 snd_emux_free(emux);
99 return 0;
100 }
101
102 /*
103 * INIT part
104 */
105
106 static int __init alsa_emu10k1_synth_init(void)
107 {
108
109 static struct snd_seq_dev_ops ops = {
110 snd_emu10k1_synth_new_device,
111 snd_emu10k1_synth_delete_device,
112 };
113 return snd_seq_device_register_driver(SNDRV_SEQ_DEV_ID_EMU10K1_SYNTH, &ops,
114 sizeof(struct snd_emu10k1_synth_arg));
115 }
116
117 static void __exit alsa_emu10k1_synth_exit(void)
118 {
119 snd_seq_device_unregister_driver(SNDRV_SEQ_DEV_ID_EMU10K1_SYNTH);
120 }
121
122 module_init(alsa_emu10k1_synth_init)
123 module_exit(alsa_emu10k1_synth_exit)
124
|
This page was automatically generated by the
LXR engine.
|