xref: /openbmc/linux/sound/firewire/digi00x/digi00x.c (revision 81c29435)
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 
name_card(struct snd_dg00x * dg00x)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 
dg00x_card_free(struct snd_card * card)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 
snd_dg00x_probe(struct fw_unit * unit,const struct ieee1394_device_id * entry)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 
snd_dg00x_update(struct fw_unit * unit)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 
snd_dg00x_remove(struct fw_unit * unit)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 
snd_dg00x_init(void)166 static int __init snd_dg00x_init(void)
167 {
168 	return driver_register(&dg00x_driver.driver);
169 }
170 
snd_dg00x_exit(void)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);
178