1// SPDX-License-Identifier: GPL-2.0-or-later
2/*
3 *  Copyright (c) by Jaroslav Kysela <perex@perex.cz>
4 *     and (c) 1999 Steve Ratcliffe <steve@parabola.demon.co.uk>
5 *  Copyright (C) 1999-2000 Takashi Iwai <tiwai@suse.de>
6 *
7 *  Emu8000 synth plug-in routine
8 */
9
10#include "emu8000_local.h"
11#include <linux/init.h>
12#include <linux/module.h>
13#include <sound/initval.h>
14
15MODULE_AUTHOR("Takashi Iwai, Steve Ratcliffe");
16MODULE_DESCRIPTION("Emu8000 synth plug-in routine");
17MODULE_LICENSE("GPL");
18
19/*----------------------------------------------------------------*/
20
21/*
22 * create a new hardware dependent device for Emu8000
23 */
24static int snd_emu8000_probe(struct device *_dev)
25{
26	struct snd_seq_device *dev = to_seq_dev(_dev);
27	struct snd_emu8000 *hw;
28	struct snd_emux *emu;
29
30	hw = *(struct snd_emu8000**)SNDRV_SEQ_DEVICE_ARGPTR(dev);
31	if (hw == NULL)
32		return -EINVAL;
33
34	if (hw->emu)
35		return -EBUSY; /* already exists..? */
36
37	if (snd_emux_new(&emu) < 0)
38		return -ENOMEM;
39
40	hw->emu = emu;
41	snd_emu8000_ops_setup(hw);
42
43	emu->hw = hw;
44	emu->max_voices = EMU8000_DRAM_VOICES;
45	emu->num_ports = hw->seq_ports;
46
47	if (hw->memhdr) {
48		snd_printk(KERN_ERR "memhdr is already initialized!?\n");
49		snd_util_memhdr_free(hw->memhdr);
50	}
51	hw->memhdr = snd_util_memhdr_new(hw->mem_size);
52	if (hw->memhdr == NULL) {
53		snd_emux_free(emu);
54		hw->emu = NULL;
55		return -ENOMEM;
56	}
57
58	emu->memhdr = hw->memhdr;
59	emu->midi_ports = hw->seq_ports < 2 ? hw->seq_ports : 2; /* number of virmidi ports */
60	emu->midi_devidx = 1;
61	emu->linear_panning = 1;
62	emu->hwdep_idx = 2; /* FIXED */
63
64	if (snd_emux_register(emu, dev->card, hw->index, "Emu8000") < 0) {
65		snd_emux_free(emu);
66		snd_util_memhdr_free(hw->memhdr);
67		hw->emu = NULL;
68		hw->memhdr = NULL;
69		return -ENOMEM;
70	}
71
72	if (hw->mem_size > 0)
73		snd_emu8000_pcm_new(dev->card, hw, 1);
74
75	dev->driver_data = hw;
76
77	return 0;
78}
79
80
81/*
82 * free all resources
83 */
84static int snd_emu8000_remove(struct device *_dev)
85{
86	struct snd_seq_device *dev = to_seq_dev(_dev);
87	struct snd_emu8000 *hw;
88
89	if (dev->driver_data == NULL)
90		return 0; /* no synth was allocated actually */
91
92	hw = dev->driver_data;
93	if (hw->pcm)
94		snd_device_free(dev->card, hw->pcm);
95	snd_emux_free(hw->emu);
96	snd_util_memhdr_free(hw->memhdr);
97	hw->emu = NULL;
98	hw->memhdr = NULL;
99	return 0;
100}
101
102/*
103 *  INIT part
104 */
105
106static struct snd_seq_driver emu8000_driver = {
107	.driver = {
108		.name = KBUILD_MODNAME,
109		.probe = snd_emu8000_probe,
110		.remove = snd_emu8000_remove,
111	},
112	.id = SNDRV_SEQ_DEV_ID_EMU8000,
113	.argsize = sizeof(struct snd_emu8000 *),
114};
115
116module_snd_seq_driver(emu8000_driver);
117