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1da177e4 LT |
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 | */ | |
eb4698f3 | 31 | static int snd_emu10k1_synth_new_device(struct snd_seq_device *dev) |
1da177e4 | 32 | { |
eb4698f3 TI |
33 | struct snd_emux *emu; |
34 | struct snd_emu10k1 *hw; | |
35 | struct snd_emu10k1_synth_arg *arg; | |
1da177e4 LT |
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(&emu) < 0) | |
50 | return -ENOMEM; | |
51 | ||
52 | snd_emu10k1_ops_setup(emu); | |
53 | emu->hw = hw = arg->hwptr; | |
54 | emu->max_voices = arg->max_voices; | |
55 | emu->num_ports = arg->seq_ports; | |
56 | emu->pitch_shift = -501; | |
57 | emu->memhdr = hw->memhdr; | |
58 | emu->midi_ports = arg->seq_ports < 2 ? arg->seq_ports : 2; /* maximum two ports */ | |
59 | emu->midi_devidx = hw->audigy ? 2 : 1; /* audigy has two external midis */ | |
60 | emu->linear_panning = 0; | |
61 | emu->hwdep_idx = 2; /* FIXED */ | |
62 | ||
63 | if (snd_emux_register(emu, dev->card, arg->index, "Emu10k1") < 0) { | |
64 | snd_emux_free(emu); | |
1da177e4 LT |
65 | return -ENOMEM; |
66 | } | |
67 | ||
68 | spin_lock_irqsave(&hw->voice_lock, flags); | |
69 | hw->synth = emu; | |
70 | hw->get_synth_voice = snd_emu10k1_synth_get_voice; | |
71 | spin_unlock_irqrestore(&hw->voice_lock, flags); | |
72 | ||
73 | dev->driver_data = emu; | |
74 | ||
75 | return 0; | |
76 | } | |
77 | ||
eb4698f3 | 78 | static int snd_emu10k1_synth_delete_device(struct snd_seq_device *dev) |
1da177e4 | 79 | { |
eb4698f3 TI |
80 | struct snd_emux *emu; |
81 | struct snd_emu10k1 *hw; | |
1da177e4 LT |
82 | unsigned long flags; |
83 | ||
84 | if (dev->driver_data == NULL) | |
85 | return 0; /* not registered actually */ | |
86 | ||
87 | emu = dev->driver_data; | |
88 | ||
89 | hw = emu->hw; | |
90 | spin_lock_irqsave(&hw->voice_lock, flags); | |
91 | hw->synth = NULL; | |
92 | hw->get_synth_voice = NULL; | |
93 | spin_unlock_irqrestore(&hw->voice_lock, flags); | |
94 | ||
95 | snd_emux_free(emu); | |
96 | return 0; | |
97 | } | |
98 | ||
99 | /* | |
100 | * INIT part | |
101 | */ | |
102 | ||
103 | static int __init alsa_emu10k1_synth_init(void) | |
104 | { | |
105 | ||
eb4698f3 | 106 | static struct snd_seq_dev_ops ops = { |
1da177e4 LT |
107 | snd_emu10k1_synth_new_device, |
108 | snd_emu10k1_synth_delete_device, | |
109 | }; | |
eb4698f3 TI |
110 | return snd_seq_device_register_driver(SNDRV_SEQ_DEV_ID_EMU10K1_SYNTH, &ops, |
111 | sizeof(struct snd_emu10k1_synth_arg)); | |
1da177e4 LT |
112 | } |
113 | ||
114 | static void __exit alsa_emu10k1_synth_exit(void) | |
115 | { | |
116 | snd_seq_device_unregister_driver(SNDRV_SEQ_DEV_ID_EMU10K1_SYNTH); | |
117 | } | |
118 | ||
119 | module_init(alsa_emu10k1_synth_init) | |
120 | module_exit(alsa_emu10k1_synth_exit) |