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_CONSOLE           0x000001
  17 #define MODEL_RACK              0x000002
  18 #define SPEC_VERSION            0x000001
  19
  20 static int name_card(struct snd_dg00x *dg00x)
  21 {
  22         struct fw_device *fw_dev = fw_parent_device(dg00x->unit);
  23         char name[32] = {0};
  24         char *model;
  25         int err;
  26
  27         err = fw_csr_string(dg00x->unit->directory, CSR_MODEL, name,
  28                             sizeof(name));
  29         if (err < 0)
  30                 return err;
  31
  32         model = skip_spaces(name);
  33
  34         strcpy(dg00x->card->driver, "Digi00x");
  35         strcpy(dg00x->card->shortname, model);
  36         strcpy(dg00x->card->mixername, model);
  37         snprintf(dg00x->card->longname, sizeof(dg00x->card->longname),
  38                  "Digidesign %s, GUID %08x%08x at %s, S%d", model,
  39                  fw_dev->config_rom[3], fw_dev->config_rom[4],
  40                  dev_name(&dg00x->unit->device), 100 << fw_dev->max_speed);
  41
  42         return 0;
  43 }
  44
  45 static void dg00x_card_free(struct snd_card *card)
  46 {
  47         struct snd_dg00x *dg00x = card->private_data;
  48
  49         snd_dg00x_stream_destroy_duplex(dg00x);
  50         snd_dg00x_transaction_unregister(dg00x);
  51
  52         fw_unit_put(dg00x->unit);
  53
  54         mutex_destroy(&dg00x->mutex);
  55 }
  56
  57 static int snd_dg00x_probe(struct fw_unit *unit,
  58                            const struct ieee1394_device_id *entry)
  59 {
  60         struct snd_card *card;
  61         struct snd_dg00x *dg00x;
  62         int err;
  63
  64         /* create card */
  65         err = snd_card_new(&unit->device, -1, NULL, THIS_MODULE,
  66                            sizeof(struct snd_dg00x), &card);
  67         if (err < 0)
  68                 return err;
  69         card->private_free = dg00x_card_free;
  70
  71         /* initialize myself */
  72         dg00x = card->private_data;
  73         dg00x->card = card;
  74         dg00x->unit = fw_unit_get(unit);
  75
  76         mutex_init(&dg00x->mutex);
  77         spin_lock_init(&dg00x->lock);
  78         init_waitqueue_head(&dg00x->hwdep_wait);
  79
  80         dg00x->is_console = entry->model_id == MODEL_CONSOLE;
  81
  82         err = name_card(dg00x);
  83         if (err < 0)
  84                 goto error;
  85
  86         err = snd_dg00x_stream_init_duplex(dg00x);
  87         if (err < 0)
  88                 goto error;
  89
  90         snd_dg00x_proc_init(dg00x);
  91
  92         err = snd_dg00x_create_pcm_devices(dg00x);
  93         if (err < 0)
  94                 goto error;
  95
  96         err = snd_dg00x_create_midi_devices(dg00x);
  97         if (err < 0)
  98                 goto error;
  99
 100         err = snd_dg00x_create_hwdep_device(dg00x);
 101         if (err < 0)
 102                 goto error;
 103
 104         err = snd_dg00x_transaction_register(dg00x);
 105         if (err < 0)
 106                 goto error;
 107
 108         err = snd_card_register(card);
 109         if (err < 0)
 110                 goto error;
 111
 112         dev_set_drvdata(&unit->device, dg00x);
 113
 114         return err;
 115 error:
 116         snd_card_free(card);
 117         return err;
 118 }
 119
 120 static void snd_dg00x_update(struct fw_unit *unit)
 121 {
 122         struct snd_dg00x *dg00x = dev_get_drvdata(&unit->device);
 123
 124         snd_dg00x_transaction_reregister(dg00x);
 125
 126         mutex_lock(&dg00x->mutex);
 127         snd_dg00x_stream_update_duplex(dg00x);
 128         mutex_unlock(&dg00x->mutex);
 129 }
 130
 131 static void snd_dg00x_remove(struct fw_unit *unit)
 132 {
 133         struct snd_dg00x *dg00x = dev_get_drvdata(&unit->device);
 134
 135         /* No need to wait for releasing card object in this context. */
 136         snd_card_free_when_closed(dg00x->card);
 137 }
 138
 139 static const struct ieee1394_device_id snd_dg00x_id_table[] = {
 140         /* Both of 002/003 use the same ID. */
 141         {
 142                 .match_flags = IEEE1394_MATCH_VENDOR_ID |
 143                                IEEE1394_MATCH_VERSION |
 144                                IEEE1394_MATCH_MODEL_ID,
 145                 .vendor_id = VENDOR_DIGIDESIGN,
 146                 .version = SPEC_VERSION,
 147                 .model_id = MODEL_CONSOLE,
 148         },
 149         {
 150                 .match_flags = IEEE1394_MATCH_VENDOR_ID |
 151                                IEEE1394_MATCH_VERSION |
 152                                IEEE1394_MATCH_MODEL_ID,
 153                 .vendor_id = VENDOR_DIGIDESIGN,
 154                 .version = SPEC_VERSION,
 155                 .model_id = MODEL_RACK,
 156         },
 157         {}
 158 };
 159 MODULE_DEVICE_TABLE(ieee1394, snd_dg00x_id_table);
 160
 161 static struct fw_driver dg00x_driver = {
 162         .driver = {
 163                 .owner = THIS_MODULE,
 164                 .name = "snd-firewire-digi00x",
 165                 .bus = &fw_bus_type,
 166         },
 167         .probe    = snd_dg00x_probe,
 168         .update   = snd_dg00x_update,
 169         .remove   = snd_dg00x_remove,
 170         .id_table = snd_dg00x_id_table,
 171 };
 172
 173 static int __init snd_dg00x_init(void)
 174 {
 175         return driver_register(&dg00x_driver.driver);
 176 }
 177
 178 static void __exit snd_dg00x_exit(void)
 179 {
 180         driver_unregister(&dg00x_driver.driver);
 181 }
 182
 183 module_init(snd_dg00x_init);
 184 module_exit(snd_dg00x_exit);