~ [ source navigation ] ~ [ diff markup ] ~ [ identifier search ] ~

TOMOYO Linux Cross Reference
Linux/sound/usb/6fire/chip.c

Version: ~ [ linux-6.2-rc3 ] ~ [ linux-6.1.5 ] ~ [ linux-6.0.19 ] ~ [ linux-5.19.17 ] ~ [ linux-5.18.19 ] ~ [ linux-5.17.15 ] ~ [ linux-5.16.20 ] ~ [ linux-5.15.87 ] ~ [ linux-5.14.21 ] ~ [ linux-5.13.19 ] ~ [ linux-5.12.19 ] ~ [ linux-5.11.22 ] ~ [ linux-5.10.162 ] ~ [ linux-5.9.16 ] ~ [ linux-5.8.18 ] ~ [ linux-5.7.19 ] ~ [ linux-5.6.19 ] ~ [ linux-5.5.19 ] ~ [ linux-5.4.228 ] ~ [ linux-5.3.18 ] ~ [ linux-5.2.21 ] ~ [ linux-5.1.21 ] ~ [ linux-5.0.21 ] ~ [ linux-4.20.17 ] ~ [ linux-4.19.269 ] ~ [ linux-4.18.20 ] ~ [ linux-4.17.19 ] ~ [ linux-4.16.18 ] ~ [ linux-4.15.18 ] ~ [ linux-4.14.302 ] ~ [ linux-4.13.16 ] ~ [ linux-4.12.14 ] ~ [ linux-4.11.12 ] ~ [ linux-4.10.17 ] ~ [ linux-4.9.337 ] ~ [ linux-4.8.17 ] ~ [ linux-4.7.10 ] ~ [ linux-4.6.7 ] ~ [ linux-4.5.7 ] ~ [ linux-4.4.302 ] ~ [ linux-4.3.6 ] ~ [ linux-4.2.8 ] ~ [ linux-4.1.52 ] ~ [ linux-4.0.9 ] ~ [ linux-3.10.108 ] ~ [ linux-2.6.32.71 ] ~ [ linux-2.6.0 ] ~ [ linux-2.4.37.11 ] ~ [ unix-v6-master ] ~ [ ccs-tools-1.8.9 ] ~ [ policy-sample ] ~
Architecture: ~ [ i386 ] ~ [ alpha ] ~ [ m68k ] ~ [ mips ] ~ [ ppc ] ~ [ sparc ] ~ [ sparc64 ] ~

  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);
208 

~ [ source navigation ] ~ [ diff markup ] ~ [ identifier search ] ~

kernel.org | git.kernel.org | LWN.net | Project Home | Wiki (Japanese) | Wiki (English) | SVN repository | Mail admin

Linux® is a registered trademark of Linus Torvalds in the United States and other countries.
TOMOYO® is a registered trademark of NTT DATA CORPORATION.

osdn.jp