1 // SPDX-License-Identifier: GPL-2.0-or-later
3 * Copyright (C) 2000 Takashi Iwai <tiwai@suse.de>
5 * Routines for control of EMU10K1 WaveTable synth
8 #include "emu10k1_synth_local.h"
9 #include <linux/init.h>
10 #include <linux/module.h>
12 MODULE_AUTHOR("Takashi Iwai");
13 MODULE_DESCRIPTION("Routines for control of EMU10K1 WaveTable synth");
14 MODULE_LICENSE("GPL");
17 * create a new hardware dependent device for Emu10k1
19 static int snd_emu10k1_synth_probe(struct device *_dev)
21 struct snd_seq_device *dev = to_seq_dev(_dev);
22 struct snd_emux *emux;
23 struct snd_emu10k1 *hw;
24 struct snd_emu10k1_synth_arg *arg;
26 arg = SNDRV_SEQ_DEVICE_ARGPTR(dev);
30 if (arg->seq_ports <= 0)
31 return 0; /* nothing */
32 if (arg->max_voices < 1)
34 else if (arg->max_voices > 64)
37 if (snd_emux_new(&emux) < 0)
40 snd_emu10k1_ops_setup(emux);
43 emux->max_voices = arg->max_voices;
44 emux->num_ports = arg->seq_ports;
45 emux->memhdr = hw->memhdr;
46 /* maximum two ports */
47 emux->midi_ports = arg->seq_ports < 2 ? arg->seq_ports : 2;
48 /* audigy has two external midis */
49 emux->midi_devidx = hw->audigy ? 2 : 1;
50 emux->linear_panning = 0;
51 emux->hwdep_idx = 2; /* FIXED */
53 if (snd_emux_register(emux, dev->card, arg->index, "Emu10k1") < 0) {
58 spin_lock_irq(&hw->voice_lock);
60 hw->get_synth_voice = snd_emu10k1_synth_get_voice;
61 spin_unlock_irq(&hw->voice_lock);
63 dev->driver_data = emux;
68 static int snd_emu10k1_synth_remove(struct device *_dev)
70 struct snd_seq_device *dev = to_seq_dev(_dev);
71 struct snd_emux *emux;
72 struct snd_emu10k1 *hw;
74 if (dev->driver_data == NULL)
75 return 0; /* not registered actually */
77 emux = dev->driver_data;
80 spin_lock_irq(&hw->voice_lock);
82 hw->get_synth_voice = NULL;
83 spin_unlock_irq(&hw->voice_lock);
93 static struct snd_seq_driver emu10k1_synth_driver = {
95 .name = KBUILD_MODNAME,
96 .probe = snd_emu10k1_synth_probe,
97 .remove = snd_emu10k1_synth_remove,
99 .id = SNDRV_SEQ_DEV_ID_EMU10K1_SYNTH,
100 .argsize = sizeof(struct snd_emu10k1_synth_arg),
103 module_snd_seq_driver(emu10k1_synth_driver);