sound/firewire/digi00x/digi00x.c

   1 /*
   2  * digi00x.c - a part of driver for Digidesign Digi 002/003 family
   3  *
   4  * Copyright (c) 2014-2015 Takashi Sakamoto
   5  *
   6  * Licensed under the terms of the GNU General Public License, version 2.
   7  */
   8
   9 #include "digi00x.h"
  10
  11 MODULE_DESCRIPTION("Digidesign Digi 002/003 family Driver");
  12 MODULE_AUTHOR("Takashi Sakamoto <o-takashi@sakamocchi.jp>");
  13 MODULE_LICENSE("GPL v2");
  14
  15 #define VENDOR_DIGIDESIGN       0x00a07e
  16 #define MODEL_DIGI00X           0x000002
  17
  18 static int name_card(struct snd_dg00x *dg00x)
  19 {
  20         struct fw_device *fw_dev = fw_parent_device(dg00x->unit);
  21         char name[32] = {0};
  22         char *model;
  23         int err;
  24
  25         err = fw_csr_string(dg00x->unit->directory, CSR_MODEL, name,
  26                             sizeof(name));
  27         if (err < 0)
  28                 return err;
  29
  30         model = skip_spaces(name);
  31
  32         strcpy(dg00x->card->driver, "Digi00x");
  33         strcpy(dg00x->card->shortname, model);
  34         strcpy(dg00x->card->mixername, model);
  35         snprintf(dg00x->card->longname, sizeof(dg00x->card->longname),
  36                  "Digidesign %s, GUID %08x%08x at %s, S%d", model,
  37                  cpu_to_be32(fw_dev->config_rom[3]),
  38                  cpu_to_be32(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
  50         fw_unit_put(dg00x->unit);
  51
  52         mutex_destroy(&dg00x->mutex);
  53 }
  54
  55 static int snd_dg00x_probe(struct fw_unit *unit,
  56                            const struct ieee1394_device_id *entry)
  57 {
  58         struct snd_card *card;
  59         struct snd_dg00x *dg00x;
  60         int err;
  61
  62         /* create card */
  63         err = snd_card_new(&unit->device, -1, NULL, THIS_MODULE,
  64                            sizeof(struct snd_dg00x), &card);
  65         if (err < 0)
  66                 return err;
  67         card->private_free = dg00x_card_free;
  68
  69         /* initialize myself */
  70         dg00x = card->private_data;
  71         dg00x->card = card;
  72         dg00x->unit = fw_unit_get(unit);
  73
  74         mutex_init(&dg00x->mutex);
  75
  76         err = name_card(dg00x);
  77         if (err < 0)
  78                 goto error;
  79
  80         err = snd_dg00x_stream_init_duplex(dg00x);
  81         if (err < 0)
  82                 goto error;
  83
  84         snd_dg00x_proc_init(dg00x);
  85
  86         err = snd_dg00x_create_pcm_devices(dg00x);
  87         if (err < 0)
  88                 goto error;
  89
  90         err = snd_card_register(card);
  91         if (err < 0)
  92                 goto error;
  93
  94         dev_set_drvdata(&unit->device, dg00x);
  95
  96         return err;
  97 error:
  98         snd_card_free(card);
  99         return err;
 100 }
 101
 102 static void snd_dg00x_update(struct fw_unit *unit)
 103 {
 104         struct snd_dg00x *dg00x = dev_get_drvdata(&unit->device);
 105
 106         mutex_lock(&dg00x->mutex);
 107         snd_dg00x_stream_update_duplex(dg00x);
 108         mutex_unlock(&dg00x->mutex);
 109 }
 110
 111 static void snd_dg00x_remove(struct fw_unit *unit)
 112 {
 113         struct snd_dg00x *dg00x = dev_get_drvdata(&unit->device);
 114
 115         /* No need to wait for releasing card object in this context. */
 116         snd_card_free_when_closed(dg00x->card);
 117 }
 118
 119 static const struct ieee1394_device_id snd_dg00x_id_table[] = {
 120         /* Both of 002/003 use the same ID. */
 121         {
 122                 .match_flags = IEEE1394_MATCH_VENDOR_ID |
 123                                IEEE1394_MATCH_MODEL_ID,
 124                 .vendor_id = VENDOR_DIGIDESIGN,
 125                 .model_id = MODEL_DIGI00X,
 126         },
 127         {}
 128 };
 129 MODULE_DEVICE_TABLE(ieee1394, snd_dg00x_id_table);
 130
 131 static struct fw_driver dg00x_driver = {
 132         .driver = {
 133                 .owner = THIS_MODULE,
 134                 .name = "snd-firewire-digi00x",
 135                 .bus = &fw_bus_type,
 136         },
 137         .probe    = snd_dg00x_probe,
 138         .update   = snd_dg00x_update,
 139         .remove   = snd_dg00x_remove,
 140         .id_table = snd_dg00x_id_table,
 141 };
 142
 143 static int __init snd_dg00x_init(void)
 144 {
 145         return driver_register(&dg00x_driver.driver);
 146 }
 147
 148 static void __exit snd_dg00x_exit(void)
 149 {
 150         driver_unregister(&dg00x_driver.driver);
 151 }
 152
 153 module_init(snd_dg00x_init);
 154 module_exit(snd_dg00x_exit);