Merge tag 'integrity-v5.13' of git://git.kernel.org/pub/scm/linux/kernel/git/zohar...
[linux-2.6-microblaze.git] / sound / usb / 6fire / chip.c
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(chip->card);
58                         snd_card_free_when_closed(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(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(&register_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, chips[i]);
97                         mutex_unlock(&register_mutex);
98                         return 0;
99                 } else if (!devices[i] && regidx < 0)
100                         regidx = i;
101         }
102         if (regidx < 0) {
103                 mutex_unlock(&register_mutex);
104                 dev_err(&intf->dev, "too many cards registered.\n");
105                 return -ENODEV;
106         }
107         devices[regidx] = device;
108         mutex_unlock(&register_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(device, 0, 0) != 0) {
119                 dev_err(&intf->dev, "can't set first interface.\n");
120                 return -EIO;
121         }
122         ret = snd_card_new(&intf->dev, index[regidx], id[regidx],
123                            THIS_MODULE, sizeof(struct sfire_chip), &card);
124         if (ret < 0) {
125                 dev_err(&intf->dev, "cannot create alsa card.\n");
126                 return ret;
127         }
128         strcpy(card->driver, "6FireUSB");
129         strcpy(card->shortname, "TerraTec DMX6FireUSB");
130         sprintf(card->longname, "%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, 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(&register_mutex);
178                         devices[chip->regidx] = NULL;
179                         chips[chip->regidx] = NULL;
180                         mutex_unlock(&register_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);