GNU Linux-libre 6.7.9-gnu
[releases.git] / sound / firewire / digi00x / digi00x.c
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
10 MODULE_DESCRIPTION("Digidesign Digi 002/003 family Driver");
11 MODULE_AUTHOR("Takashi Sakamoto <o-takashi@sakamocchi.jp>");
12 MODULE_LICENSE("GPL");
13
14 #define VENDOR_DIGIDESIGN       0x00a07e
15 #define MODEL_CONSOLE           0x000001
16 #define MODEL_RACK              0x000002
17 #define SPEC_VERSION            0x000001
18
19 static 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(dg00x->unit->directory, CSR_MODEL, name,
27                             sizeof(name));
28         if (err < 0)
29                 return err;
30
31         model = skip_spaces(name);
32
33         strcpy(dg00x->card->driver, "Digi00x");
34         strcpy(dg00x->card->shortname, model);
35         strcpy(dg00x->card->mixername, model);
36         snprintf(dg00x->card->longname, sizeof(dg00x->card->longname),
37                  "Digidesign %s, GUID %08x%08x at %s, S%d", model,
38                  fw_dev->config_rom[3], fw_dev->config_rom[4],
39                  dev_name(&dg00x->unit->device), 100 << fw_dev->max_speed);
40
41         return 0;
42 }
43
44 static 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(&dg00x->mutex);
52         fw_unit_put(dg00x->unit);
53 }
54
55 static 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(&unit->device, -1, NULL, THIS_MODULE, sizeof(*dg00x), &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(&unit->device, 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;
108 error:
109         snd_card_free(card);
110         return err;
111 }
112
113 static void snd_dg00x_update(struct fw_unit *unit)
114 {
115         struct snd_dg00x *dg00x = dev_get_drvdata(&unit->device);
116
117         snd_dg00x_transaction_reregister(dg00x);
118
119         mutex_lock(&dg00x->mutex);
120         snd_dg00x_stream_update_duplex(dg00x);
121         mutex_unlock(&dg00x->mutex);
122 }
123
124 static void snd_dg00x_remove(struct fw_unit *unit)
125 {
126         struct snd_dg00x *dg00x = dev_get_drvdata(&unit->device);
127
128         // Block till all of ALSA character devices are released.
129         snd_card_free(dg00x->card);
130 }
131
132 static const struct ieee1394_device_id snd_dg00x_id_table[] = {
133         /* Both of 002/003 use the same ID. */
134         {
135                 .match_flags = IEEE1394_MATCH_VENDOR_ID |
136                                IEEE1394_MATCH_VERSION |
137                                IEEE1394_MATCH_MODEL_ID,
138                 .vendor_id = VENDOR_DIGIDESIGN,
139                 .version = SPEC_VERSION,
140                 .model_id = MODEL_CONSOLE,
141         },
142         {
143                 .match_flags = IEEE1394_MATCH_VENDOR_ID |
144                                IEEE1394_MATCH_VERSION |
145                                IEEE1394_MATCH_MODEL_ID,
146                 .vendor_id = VENDOR_DIGIDESIGN,
147                 .version = SPEC_VERSION,
148                 .model_id = MODEL_RACK,
149         },
150         {}
151 };
152 MODULE_DEVICE_TABLE(ieee1394, snd_dg00x_id_table);
153
154 static struct fw_driver dg00x_driver = {
155         .driver = {
156                 .owner = THIS_MODULE,
157                 .name = KBUILD_MODNAME,
158                 .bus = &fw_bus_type,
159         },
160         .probe    = snd_dg00x_probe,
161         .update   = snd_dg00x_update,
162         .remove   = snd_dg00x_remove,
163         .id_table = snd_dg00x_id_table,
164 };
165
166 static int __init snd_dg00x_init(void)
167 {
168         return driver_register(&dg00x_driver.driver);
169 }
170
171 static void __exit snd_dg00x_exit(void)
172 {
173         driver_unregister(&dg00x_driver.driver);
174 }
175
176 module_init(snd_dg00x_init);
177 module_exit(snd_dg00x_exit);