1 // SPDX-License-Identifier: GPL-2.0-or-later 1
2 /*
3 * Copyright (C) 2000 Takashi Iwai <tiwai@sus
4 *
5 * Routines for control of EMU10K1 WaveTable
6 */
7
8 #include "emu10k1_synth_local.h"
9 #include <linux/init.h>
10 #include <linux/module.h>
11
12 MODULE_AUTHOR("Takashi Iwai");
13 MODULE_DESCRIPTION("Routines for control of EM
14 MODULE_LICENSE("GPL");
15
16 /*
17 * create a new hardware dependent device for
18 */
19 static int snd_emu10k1_synth_probe(struct devi
20 {
21 struct snd_seq_device *dev = to_seq_de
22 struct snd_emux *emux;
23 struct snd_emu10k1 *hw;
24 struct snd_emu10k1_synth_arg *arg;
25 unsigned long flags;
26
27 arg = SNDRV_SEQ_DEVICE_ARGPTR(dev);
28 if (arg == NULL)
29 return -EINVAL;
30
31 if (arg->seq_ports <= 0)
32 return 0; /* nothing */
33 if (arg->max_voices < 1)
34 arg->max_voices = 1;
35 else if (arg->max_voices > 64)
36 arg->max_voices = 64;
37
38 if (snd_emux_new(&emux) < 0)
39 return -ENOMEM;
40
41 snd_emu10k1_ops_setup(emux);
42 hw = arg->hwptr;
43 emux->hw = hw;
44 emux->max_voices = arg->max_voices;
45 emux->num_ports = arg->seq_ports;
46 emux->pitch_shift = -501;
47 emux->memhdr = hw->memhdr;
48 /* maximum two ports */
49 emux->midi_ports = arg->seq_ports < 2
50 /* audigy has two external midis */
51 emux->midi_devidx = hw->audigy ? 2 : 1
52 emux->linear_panning = 0;
53 emux->hwdep_idx = 2; /* FIXED */
54
55 if (snd_emux_register(emux, dev->card,
56 snd_emux_free(emux);
57 return -ENOMEM;
58 }
59
60 spin_lock_irqsave(&hw->voice_lock, fla
61 hw->synth = emux;
62 hw->get_synth_voice = snd_emu10k1_synt
63 spin_unlock_irqrestore(&hw->voice_lock
64
65 dev->driver_data = emux;
66
67 return 0;
68 }
69
70 static int snd_emu10k1_synth_remove(struct dev
71 {
72 struct snd_seq_device *dev = to_seq_de
73 struct snd_emux *emux;
74 struct snd_emu10k1 *hw;
75 unsigned long flags;
76
77 if (dev->driver_data == NULL)
78 return 0; /* not registered ac
79
80 emux = dev->driver_data;
81
82 hw = emux->hw;
83 spin_lock_irqsave(&hw->voice_lock, fla
84 hw->synth = NULL;
85 hw->get_synth_voice = NULL;
86 spin_unlock_irqrestore(&hw->voice_lock
87
88 snd_emux_free(emux);
89 return 0;
90 }
91
92 /*
93 * INIT part
94 */
95
96 static struct snd_seq_driver emu10k1_synth_dri
97 .driver = {
98 .name = KBUILD_MODNAME,
99 .probe = snd_emu10k1_synth_pro
100 .remove = snd_emu10k1_synth_re
101 },
102 .id = SNDRV_SEQ_DEV_ID_EMU10K1_SYNTH,
103 .argsize = sizeof(struct snd_emu10k1_s
104 };
105
106 module_snd_seq_driver(emu10k1_synth_driver);
107
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