1// SPDX-License-Identifier: GPL-2.0-only
2/*
3 * digi00x.c - a part of driver for Digidesign Digi 002/003 family
4 *
5 * Copyright (c) 2014-2015 Takashi Sakamoto
6 */
7
8#include "digi00x.h"
9
10MODULE_DESCRIPTION("Digidesign Digi 002/003 family Driver");
11MODULE_AUTHOR("Takashi Sakamoto <o-takashi@sakamocchi.jp>");
12MODULE_LICENSE("GPL");
13
14#define VENDOR_DIGIDESIGN 0x00a07e
15#define MODEL_CONSOLE 0x000001
16#define MODEL_RACK 0x000002
17#define SPEC_VERSION 0x000001
18
19static int name_card(struct snd_dg00x *dg00x)
20{
21 struct fw_device *fw_dev = fw_parent_device(dg00x->unit);
22 char name[32] = {0};
23 char *model;
24 int err;
25
26 err = fw_csr_string(directory: dg00x->unit->directory, CSR_MODEL, buf: name,
27 size: sizeof(name));
28 if (err < 0)
29 return err;
30
31 model = skip_spaces(name);
32
33 strscpy(dg00x->card->driver, "Digi00x");
34 strscpy(dg00x->card->shortname, model);
35 strscpy(dg00x->card->mixername, model);
36 snprintf(buf: dg00x->card->longname, size: sizeof(dg00x->card->longname),
37 fmt: "Digidesign %s, GUID %08x%08x at %s, S%d", model,
38 fw_dev->config_rom[3], fw_dev->config_rom[4],
39 dev_name(dev: &dg00x->unit->device), 100 << fw_dev->max_speed);
40
41 return 0;
42}
43
44static void dg00x_card_free(struct snd_card *card)
45{
46 struct snd_dg00x *dg00x = card->private_data;
47
48 snd_dg00x_stream_destroy_duplex(dg00x);
49 snd_dg00x_transaction_unregister(dg00x);
50
51 mutex_destroy(lock: &dg00x->mutex);
52 fw_unit_put(unit: dg00x->unit);
53}
54
55static int snd_dg00x_probe(struct fw_unit *unit, const struct ieee1394_device_id *entry)
56{
57 struct snd_card *card;
58 struct snd_dg00x *dg00x;
59 int err;
60
61 err = snd_card_new(parent: &unit->device, idx: -1, NULL, THIS_MODULE, extra_size: sizeof(*dg00x), card_ret: &card);
62 if (err < 0)
63 return err;
64 card->private_free = dg00x_card_free;
65
66 dg00x = card->private_data;
67 dg00x->unit = fw_unit_get(unit);
68 dev_set_drvdata(dev: &unit->device, data: dg00x);
69 dg00x->card = card;
70
71 mutex_init(&dg00x->mutex);
72 spin_lock_init(&dg00x->lock);
73 init_waitqueue_head(&dg00x->hwdep_wait);
74
75 dg00x->is_console = entry->model_id == MODEL_CONSOLE;
76
77 err = name_card(dg00x);
78 if (err < 0)
79 goto error;
80
81 err = snd_dg00x_stream_init_duplex(dg00x);
82 if (err < 0)
83 goto error;
84
85 snd_dg00x_proc_init(dg00x);
86
87 err = snd_dg00x_create_pcm_devices(dg00x);
88 if (err < 0)
89 goto error;
90
91 err = snd_dg00x_create_midi_devices(dg00x);
92 if (err < 0)
93 goto error;
94
95 err = snd_dg00x_create_hwdep_device(dg00x);
96 if (err < 0)
97 goto error;
98
99 err = snd_dg00x_transaction_register(dg00x);
100 if (err < 0)
101 goto error;
102
103 err = snd_card_register(card);
104 if (err < 0)
105 goto error;
106
107 return 0;
108error:
109 snd_card_free(card);
110 return err;
111}
112
113static void snd_dg00x_update(struct fw_unit *unit)
114{
115 struct snd_dg00x *dg00x = dev_get_drvdata(dev: &unit->device);
116
117 snd_dg00x_transaction_reregister(dg00x);
118
119 guard(mutex)(T: &dg00x->mutex);
120 snd_dg00x_stream_update_duplex(dg00x);
121}
122
123static void snd_dg00x_remove(struct fw_unit *unit)
124{
125 struct snd_dg00x *dg00x = dev_get_drvdata(dev: &unit->device);
126
127 // Block till all of ALSA character devices are released.
128 snd_card_free(card: dg00x->card);
129}
130
131static const struct ieee1394_device_id snd_dg00x_id_table[] = {
132 /* Both of 002/003 use the same ID. */
133 {
134 .match_flags = IEEE1394_MATCH_VENDOR_ID |
135 IEEE1394_MATCH_VERSION |
136 IEEE1394_MATCH_MODEL_ID,
137 .vendor_id = VENDOR_DIGIDESIGN,
138 .version = SPEC_VERSION,
139 .model_id = MODEL_CONSOLE,
140 },
141 {
142 .match_flags = IEEE1394_MATCH_VENDOR_ID |
143 IEEE1394_MATCH_VERSION |
144 IEEE1394_MATCH_MODEL_ID,
145 .vendor_id = VENDOR_DIGIDESIGN,
146 .version = SPEC_VERSION,
147 .model_id = MODEL_RACK,
148 },
149 {}
150};
151MODULE_DEVICE_TABLE(ieee1394, snd_dg00x_id_table);
152
153static struct fw_driver dg00x_driver = {
154 .driver = {
155 .owner = THIS_MODULE,
156 .name = KBUILD_MODNAME,
157 .bus = &fw_bus_type,
158 },
159 .probe = snd_dg00x_probe,
160 .update = snd_dg00x_update,
161 .remove = snd_dg00x_remove,
162 .id_table = snd_dg00x_id_table,
163};
164
165static int __init snd_dg00x_init(void)
166{
167 return driver_register(drv: &dg00x_driver.driver);
168}
169
170static void __exit snd_dg00x_exit(void)
171{
172 driver_unregister(drv: &dg00x_driver.driver);
173}
174
175module_init(snd_dg00x_init);
176module_exit(snd_dg00x_exit);
177

source code of linux/sound/firewire/digi00x/digi00x.c