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
15 MODULE_AUTHOR("Takashi Iwai, Steve Ratcliffe");
16 MODULE_DESCRIPTION("Emu8000 synth plug-in routine");
17 MODULE_LICENSE("GPL");
18
19 /*----------------------------------------------------------------*/
20
21 /*
22 * create a new hardware dependent device for Emu8000
23 */
snd_emu8000_probe(struct device * _dev)24 static 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 */
snd_emu8000_remove(struct device * _dev)84 static 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
106 static 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
116 module_snd_seq_driver(emu8000_driver);
117