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                  fw_dev->config_rom[3], fw_dev->config_rom[4],
  38                  dev_name(&dg00x->unit->device), 100 << fw_dev->max_speed);
  39
  40         return 0;
  41 }
  42
  43 static void dg00x_card_free(struct snd_card *card)
  44 {
  45         struct snd_dg00x *dg00x = card->private_data;
  46
  47         snd_dg00x_stream_destroy_duplex(dg00x);
  48         snd_dg00x_transaction_unregister(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         spin_lock_init(&dg00x->lock);
  76         init_waitqueue_head(&dg00x->hwdep_wait);
  77
  78         err = name_card(dg00x);
  79         if (err < 0)
  80                 goto error;
  81
  82         err = snd_dg00x_stream_init_duplex(dg00x);
  83         if (err < 0)
  84                 goto error;
  85
  86         snd_dg00x_proc_init(dg00x);
  87
  88         err = snd_dg00x_create_pcm_devices(dg00x);
  89         if (err < 0)
  90                 goto error;
  91
  92         err = snd_dg00x_create_midi_devices(dg00x);
  93         if (err < 0)
  94                 goto error;
  95
  96         err = snd_dg00x_create_hwdep_device(dg00x);
  97         if (err < 0)
  98                 goto error;
  99
 100         err = snd_dg00x_transaction_register(dg00x);
 101         if (err < 0)
 102                 goto error;
 103
 104         err = snd_card_register(card);
 105         if (err < 0)
 106                 goto error;
 107
 108         dev_set_drvdata(&unit->device, dg00x);
 109
 110         return err;
 111 error:
 112         snd_card_free(card);
 113         return err;
 114 }
 115
 116 static void snd_dg00x_update(struct fw_unit *unit)
 117 {
 118         struct snd_dg00x *dg00x = dev_get_drvdata(&unit->device);
 119
 120         snd_dg00x_transaction_reregister(dg00x);
 121
 122         mutex_lock(&dg00x->mutex);
 123         snd_dg00x_stream_update_duplex(dg00x);
 124         mutex_unlock(&dg00x->mutex);
 125 }
 126
 127 static void snd_dg00x_remove(struct fw_unit *unit)
 128 {
 129         struct snd_dg00x *dg00x = dev_get_drvdata(&unit->device);
 130
 131         /* No need to wait for releasing card object in this context. */
 132         snd_card_free_when_closed(dg00x->card);
 133 }
 134
 135 static const struct ieee1394_device_id snd_dg00x_id_table[] = {
 136         /* Both of 002/003 use the same ID. */
 137         {
 138                 .match_flags = IEEE1394_MATCH_VENDOR_ID |
 139                                IEEE1394_MATCH_MODEL_ID,
 140                 .vendor_id = VENDOR_DIGIDESIGN,
 141                 .model_id = MODEL_DIGI00X,
 142         },
 143         {}
 144 };
 145 MODULE_DEVICE_TABLE(ieee1394, snd_dg00x_id_table);
 146
 147 static struct fw_driver dg00x_driver = {
 148         .driver = {
 149                 .owner = THIS_MODULE,
 150                 .name = "snd-firewire-digi00x",
 151                 .bus = &fw_bus_type,
 152         },
 153         .probe    = snd_dg00x_probe,
 154         .update   = snd_dg00x_update,
 155         .remove   = snd_dg00x_remove,
 156         .id_table = snd_dg00x_id_table,
 157 };
 158
 159 static int __init snd_dg00x_init(void)
 160 {
 161         return driver_register(&dg00x_driver.driver);
 162 }
 163
 164 static void __exit snd_dg00x_exit(void)
 165 {
 166         driver_unregister(&dg00x_driver.driver);
 167 }
 168
 169 module_init(snd_dg00x_init);
 170 module_exit(snd_dg00x_exit);