1 | // SPDX-License-Identifier: GPL-2.0-or-later |
2 | /* |
3 | * Linux driver for TerraTec DMX 6Fire USB |
4 | * |
5 | * Main routines and module definitions. |
6 | * |
7 | * Author: Torsten Schenk <torsten.schenk@zoho.com> |
8 | * Created: Jan 01, 2011 |
9 | * Copyright: (C) Torsten Schenk |
10 | */ |
11 | |
12 | #include "chip.h" |
13 | #include "firmware.h" |
14 | #include "pcm.h" |
15 | #include "control.h" |
16 | #include "comm.h" |
17 | #include "midi.h" |
18 | |
19 | #include <linux/moduleparam.h> |
20 | #include <linux/interrupt.h> |
21 | #include <linux/module.h> |
22 | #include <linux/init.h> |
23 | #include <linux/gfp.h> |
24 | #include <sound/initval.h> |
25 | |
26 | MODULE_AUTHOR("Torsten Schenk <torsten.schenk@zoho.com>" ); |
27 | MODULE_DESCRIPTION("TerraTec DMX 6Fire USB audio driver" ); |
28 | MODULE_LICENSE("GPL v2" ); |
29 | |
30 | static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX; /* Index 0-max */ |
31 | static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR; /* Id for card */ |
32 | static bool enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP; /* Enable card */ |
33 | static struct sfire_chip *chips[SNDRV_CARDS] = SNDRV_DEFAULT_PTR; |
34 | static struct usb_device *devices[SNDRV_CARDS] = SNDRV_DEFAULT_PTR; |
35 | |
36 | module_param_array(index, int, NULL, 0444); |
37 | MODULE_PARM_DESC(index, "Index value for the 6fire sound device" ); |
38 | module_param_array(id, charp, NULL, 0444); |
39 | MODULE_PARM_DESC(id, "ID string for the 6fire sound device." ); |
40 | module_param_array(enable, bool, NULL, 0444); |
41 | MODULE_PARM_DESC(enable, "Enable the 6fire sound device." ); |
42 | |
43 | static DEFINE_MUTEX(register_mutex); |
44 | |
45 | static void usb6fire_chip_abort(struct sfire_chip *chip) |
46 | { |
47 | if (chip) { |
48 | if (chip->pcm) |
49 | usb6fire_pcm_abort(chip); |
50 | if (chip->midi) |
51 | usb6fire_midi_abort(chip); |
52 | if (chip->comm) |
53 | usb6fire_comm_abort(chip); |
54 | if (chip->control) |
55 | usb6fire_control_abort(chip); |
56 | if (chip->card) { |
57 | snd_card_disconnect(card: chip->card); |
58 | snd_card_free_when_closed(card: chip->card); |
59 | chip->card = NULL; |
60 | } |
61 | } |
62 | } |
63 | |
64 | static void usb6fire_chip_destroy(struct sfire_chip *chip) |
65 | { |
66 | if (chip) { |
67 | if (chip->pcm) |
68 | usb6fire_pcm_destroy(chip); |
69 | if (chip->midi) |
70 | usb6fire_midi_destroy(chip); |
71 | if (chip->comm) |
72 | usb6fire_comm_destroy(chip); |
73 | if (chip->control) |
74 | usb6fire_control_destroy(chip); |
75 | if (chip->card) |
76 | snd_card_free(card: chip->card); |
77 | } |
78 | } |
79 | |
80 | static int usb6fire_chip_probe(struct usb_interface *intf, |
81 | const struct usb_device_id *usb_id) |
82 | { |
83 | int ret; |
84 | int i; |
85 | struct sfire_chip *chip = NULL; |
86 | struct usb_device *device = interface_to_usbdev(intf); |
87 | int regidx = -1; /* index in module parameter array */ |
88 | struct snd_card *card = NULL; |
89 | |
90 | /* look if we already serve this card and return if so */ |
91 | mutex_lock(®ister_mutex); |
92 | for (i = 0; i < SNDRV_CARDS; i++) { |
93 | if (devices[i] == device) { |
94 | if (chips[i]) |
95 | chips[i]->intf_count++; |
96 | usb_set_intfdata(intf, data: chips[i]); |
97 | mutex_unlock(lock: ®ister_mutex); |
98 | return 0; |
99 | } else if (!devices[i] && regidx < 0) |
100 | regidx = i; |
101 | } |
102 | if (regidx < 0) { |
103 | mutex_unlock(lock: ®ister_mutex); |
104 | dev_err(&intf->dev, "too many cards registered.\n" ); |
105 | return -ENODEV; |
106 | } |
107 | devices[regidx] = device; |
108 | mutex_unlock(lock: ®ister_mutex); |
109 | |
110 | /* check, if firmware is present on device, upload it if not */ |
111 | ret = usb6fire_fw_init(intf); |
112 | if (ret < 0) |
113 | return ret; |
114 | else if (ret == FW_NOT_READY) /* firmware update performed */ |
115 | return 0; |
116 | |
117 | /* if we are here, card can be registered in alsa. */ |
118 | if (usb_set_interface(dev: device, ifnum: 0, alternate: 0) != 0) { |
119 | dev_err(&intf->dev, "can't set first interface.\n" ); |
120 | return -EIO; |
121 | } |
122 | ret = snd_card_new(parent: &intf->dev, idx: index[regidx], xid: id[regidx], |
123 | THIS_MODULE, extra_size: sizeof(struct sfire_chip), card_ret: &card); |
124 | if (ret < 0) { |
125 | dev_err(&intf->dev, "cannot create alsa card.\n" ); |
126 | return ret; |
127 | } |
128 | strcpy(p: card->driver, q: "6FireUSB" ); |
129 | strcpy(p: card->shortname, q: "TerraTec DMX6FireUSB" ); |
130 | sprintf(buf: card->longname, fmt: "%s at %d:%d" , card->shortname, |
131 | device->bus->busnum, device->devnum); |
132 | |
133 | chip = card->private_data; |
134 | chips[regidx] = chip; |
135 | chip->dev = device; |
136 | chip->regidx = regidx; |
137 | chip->intf_count = 1; |
138 | chip->card = card; |
139 | |
140 | ret = usb6fire_comm_init(chip); |
141 | if (ret < 0) |
142 | goto destroy_chip; |
143 | |
144 | ret = usb6fire_midi_init(chip); |
145 | if (ret < 0) |
146 | goto destroy_chip; |
147 | |
148 | ret = usb6fire_pcm_init(chip); |
149 | if (ret < 0) |
150 | goto destroy_chip; |
151 | |
152 | ret = usb6fire_control_init(chip); |
153 | if (ret < 0) |
154 | goto destroy_chip; |
155 | |
156 | ret = snd_card_register(card); |
157 | if (ret < 0) { |
158 | dev_err(&intf->dev, "cannot register card." ); |
159 | goto destroy_chip; |
160 | } |
161 | usb_set_intfdata(intf, data: chip); |
162 | return 0; |
163 | |
164 | destroy_chip: |
165 | usb6fire_chip_destroy(chip); |
166 | return ret; |
167 | } |
168 | |
169 | static void usb6fire_chip_disconnect(struct usb_interface *intf) |
170 | { |
171 | struct sfire_chip *chip; |
172 | |
173 | chip = usb_get_intfdata(intf); |
174 | if (chip) { /* if !chip, fw upload has been performed */ |
175 | chip->intf_count--; |
176 | if (!chip->intf_count) { |
177 | mutex_lock(®ister_mutex); |
178 | devices[chip->regidx] = NULL; |
179 | chips[chip->regidx] = NULL; |
180 | mutex_unlock(lock: ®ister_mutex); |
181 | |
182 | chip->shutdown = true; |
183 | usb6fire_chip_abort(chip); |
184 | usb6fire_chip_destroy(chip); |
185 | } |
186 | } |
187 | } |
188 | |
189 | static const struct usb_device_id device_table[] = { |
190 | { |
191 | .match_flags = USB_DEVICE_ID_MATCH_DEVICE, |
192 | .idVendor = 0x0ccd, |
193 | .idProduct = 0x0080 |
194 | }, |
195 | {} |
196 | }; |
197 | |
198 | MODULE_DEVICE_TABLE(usb, device_table); |
199 | |
200 | static struct usb_driver usb_driver = { |
201 | .name = "snd-usb-6fire" , |
202 | .probe = usb6fire_chip_probe, |
203 | .disconnect = usb6fire_chip_disconnect, |
204 | .id_table = device_table, |
205 | }; |
206 | |
207 | module_usb_driver(usb_driver); |
208 | |