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	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 ? 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, arg->index, "Emu10k1") < 0) {
56		snd_emux_free(emux);
57		return -ENOMEM;
58	}
59
60	spin_lock_irqsave(&hw->voice_lock, flags);
61	hw->synth = emux;
62	hw->get_synth_voice = snd_emu10k1_synth_get_voice;
63	spin_unlock_irqrestore(&hw->voice_lock, flags);
64
65	dev->driver_data = emux;
66
67	return 0;
68}
69
70static int snd_emu10k1_synth_remove(struct device *_dev)
71{
72	struct snd_seq_device *dev = to_seq_dev(_dev);
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 actually */
79
80	emux = dev->driver_data;
81
82	hw = emux->hw;
83	spin_lock_irqsave(&hw->voice_lock, flags);
84	hw->synth = NULL;
85	hw->get_synth_voice = NULL;
86	spin_unlock_irqrestore(&hw->voice_lock, flags);
87
88	snd_emux_free(emux);
89	return 0;
90}
91
92/*
93 *  INIT part
94 */
95
96static struct snd_seq_driver emu10k1_synth_driver = {
97	.driver = {
98		.name = KBUILD_MODNAME,
99		.probe = snd_emu10k1_synth_probe,
100		.remove = snd_emu10k1_synth_remove,
101	},
102	.id = SNDRV_SEQ_DEV_ID_EMU10K1_SYNTH,
103	.argsize = sizeof(struct snd_emu10k1_synth_arg),
104};
105
106module_snd_seq_driver(emu10k1_synth_driver);
107