sound/firewire/digi00x/digi00x.c

   1 // SPDX-License-Identifier: GPL-2.0-only
   2 /*
   3  * digi00x.c - a part of driver for Digidesign Digi 002/003 family
   4  *
   5  * Copyright (c) 2014-2015 Takashi Sakamoto
   6  */
   7
   8 #include "digi00x.h"
   9
  10 MODULE_DESCRIPTION("Digidesign Digi 002/003 family Driver");
  11 MODULE_AUTHOR("Takashi Sakamoto <o-takashi@sakamocchi.jp>");
  12 MODULE_LICENSE("GPL");
  13
  14 #define VENDOR_DIGIDESIGN       0x00a07e
  15 #define MODEL_CONSOLE           0x000001
  16 #define MODEL_RACK              0x000002
  17 #define SPEC_VERSION            0x000001
  18
  19 static int name_card(struct snd_dg00x *dg00x)
  20 {
  21         struct fw_device *fw_dev = fw_parent_device(dg00x->unit);
  22         char name[32] = {0};
  23         char *model;
  24         int err;
  25
  26         err = fw_csr_string(dg00x->unit->directory, CSR_MODEL, name,
  27                             sizeof(name));
  28         if (err < 0)
  29                 return err;
  30
  31         model = skip_spaces(name);
  32
  33         strcpy(dg00x->card->driver, "Digi00x");
  34         strcpy(dg00x->card->shortname, model);
  35         strcpy(dg00x->card->mixername, model);
  36         snprintf(dg00x->card->longname, sizeof(dg00x->card->longname),
  37                  "Digidesign %s, GUID %08x%08x at %s, S%d", model,
  38                  fw_dev->config_rom[3], 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         snd_dg00x_transaction_unregister(dg00x);
  50
  51         mutex_destroy(&dg00x->mutex);
  52         fw_unit_put(dg00x->unit);
  53 }
  54
  55 static int snd_dg00x_probe(struct fw_unit *unit, const struct ieee1394_device_id *entry)
  56 {
  57         struct snd_card *card;
  58         struct snd_dg00x *dg00x;
  59         int err;
  60
  61         err = snd_card_new(&unit->device, -1, NULL, THIS_MODULE, sizeof(*dg00x), &card);
  62         if (err < 0)
  63                 return err;
  64         card->private_free = dg00x_card_free;
  65
  66         dg00x = card->private_data;
  67         dg00x->unit = fw_unit_get(unit);
  68         dev_set_drvdata(&unit->device, dg00x);
  69         dg00x->card = card;
  70
  71         mutex_init(&dg00x->mutex);
  72         spin_lock_init(&dg00x->lock);
  73         init_waitqueue_head(&dg00x->hwdep_wait);
  74
  75         dg00x->is_console = entry->model_id == MODEL_CONSOLE;
  76
  77         err = name_card(dg00x);
  78         if (err < 0)
  79                 goto error;
  80
  81         err = snd_dg00x_stream_init_duplex(dg00x);
  82         if (err < 0)
  83                 goto error;
  84
  85         snd_dg00x_proc_init(dg00x);
  86
  87         err = snd_dg00x_create_pcm_devices(dg00x);
  88         if (err < 0)
  89                 goto error;
  90
  91         err = snd_dg00x_create_midi_devices(dg00x);
  92         if (err < 0)
  93                 goto error;
  94
  95         err = snd_dg00x_create_hwdep_device(dg00x);
  96         if (err < 0)
  97                 goto error;
  98
  99         err = snd_dg00x_transaction_register(dg00x);
 100         if (err < 0)
 101                 goto error;
 102
 103         err = snd_card_register(card);
 104         if (err < 0)
 105                 goto error;
 106
 107         return 0;
 108 error:
 109         snd_card_free(card);
 110         return err;
 111 }
 112
 113 static void snd_dg00x_update(struct fw_unit *unit)
 114 {
 115         struct snd_dg00x *dg00x = dev_get_drvdata(&unit->device);
 116
 117         snd_dg00x_transaction_reregister(dg00x);
 118
 119         mutex_lock(&dg00x->mutex);
 120         snd_dg00x_stream_update_duplex(dg00x);
 121         mutex_unlock(&dg00x->mutex);
 122 }
 123
 124 static void snd_dg00x_remove(struct fw_unit *unit)
 125 {
 126         struct snd_dg00x *dg00x = dev_get_drvdata(&unit->device);
 127
 128         // Block till all of ALSA character devices are released.
 129         snd_card_free(dg00x->card);
 130 }
 131
 132 static const struct ieee1394_device_id snd_dg00x_id_table[] = {
 133         /* Both of 002/003 use the same ID. */
 134         {
 135                 .match_flags = IEEE1394_MATCH_VENDOR_ID |
 136                                IEEE1394_MATCH_VERSION |
 137                                IEEE1394_MATCH_MODEL_ID,
 138                 .vendor_id = VENDOR_DIGIDESIGN,
 139                 .version = SPEC_VERSION,
 140                 .model_id = MODEL_CONSOLE,
 141         },
 142         {
 143                 .match_flags = IEEE1394_MATCH_VENDOR_ID |
 144                                IEEE1394_MATCH_VERSION |
 145                                IEEE1394_MATCH_MODEL_ID,
 146                 .vendor_id = VENDOR_DIGIDESIGN,
 147                 .version = SPEC_VERSION,
 148                 .model_id = MODEL_RACK,
 149         },
 150         {}
 151 };
 152 MODULE_DEVICE_TABLE(ieee1394, snd_dg00x_id_table);
 153
 154 static struct fw_driver dg00x_driver = {
 155         .driver = {
 156                 .owner = THIS_MODULE,
 157                 .name = KBUILD_MODNAME,
 158                 .bus = &fw_bus_type,
 159         },
 160         .probe    = snd_dg00x_probe,
 161         .update   = snd_dg00x_update,
 162         .remove   = snd_dg00x_remove,
 163         .id_table = snd_dg00x_id_table,
 164 };
 165
 166 static int __init snd_dg00x_init(void)
 167 {
 168         return driver_register(&dg00x_driver.driver);
 169 }
 170
 171 static void __exit snd_dg00x_exit(void)
 172 {
 173         driver_unregister(&dg00x_driver.driver);
 174 }
 175
 176 module_init(snd_dg00x_init);
 177 module_exit(snd_dg00x_exit);