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 EMU10K1 WaveTable synth
6 */
7
8#include "emu10k1_synth_local.h"
9#include <linux/init.h>
10#include <linux/module.h>
11
12MODULE_AUTHOR("Takashi Iwai");
13MODULE_DESCRIPTION("Routines for control of EMU10K1 WaveTable synth");
14MODULE_LICENSE("GPL");
15
16/*
17 * create a new hardware dependent device for Emu10k1
18 */
19static int snd_emu10k1_synth_probe(struct device *_dev)
20{
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;
25
26	arg = SNDRV_SEQ_DEVICE_ARGPTR(dev);
27	if (arg == NULL)
28		return -EINVAL;
29
30	if (arg->seq_ports <= 0)
31		return 0; /* nothing */
32	if (arg->max_voices < 1)
33		arg->max_voices = 1;
34	else if (arg->max_voices > 64)
35		arg->max_voices = 64;
36
37	if (snd_emux_new(&emux) < 0)
38		return -ENOMEM;
39
40	snd_emu10k1_ops_setup(emux);
41	hw = arg->hwptr;
42	emux->hw = hw;
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 */
52
53	if (snd_emux_register(emux, dev->card, arg->index, "Emu10k1") < 0) {
54		snd_emux_free(emux);
55		return -ENOMEM;
56	}
57
58	spin_lock_irq(&hw->voice_lock);
59	hw->synth = emux;
60	hw->get_synth_voice = snd_emu10k1_synth_get_voice;
61	spin_unlock_irq(&hw->voice_lock);
62
63	dev->driver_data = emux;
64
65	return 0;
66}
67
68static int snd_emu10k1_synth_remove(struct device *_dev)
69{
70	struct snd_seq_device *dev = to_seq_dev(_dev);
71	struct snd_emux *emux;
72	struct snd_emu10k1 *hw;
73
74	if (dev->driver_data == NULL)
75		return 0; /* not registered actually */
76
77	emux = dev->driver_data;
78
79	hw = emux->hw;
80	spin_lock_irq(&hw->voice_lock);
81	hw->synth = NULL;
82	hw->get_synth_voice = NULL;
83	spin_unlock_irq(&hw->voice_lock);
84
85	snd_emux_free(emux);
86	return 0;
87}
88
89/*
90 *  INIT part
91 */
92
93static struct snd_seq_driver emu10k1_synth_driver = {
94	.driver = {
95		.name = KBUILD_MODNAME,
96		.probe = snd_emu10k1_synth_probe,
97		.remove = snd_emu10k1_synth_remove,
98	},
99	.id = SNDRV_SEQ_DEV_ID_EMU10K1_SYNTH,
100	.argsize = sizeof(struct snd_emu10k1_synth_arg),
101};
102
103module_snd_seq_driver(emu10k1_synth_driver);
104