linux/sound/firewire/digi00x/digi00x.c
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   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
  10MODULE_DESCRIPTION("Digidesign Digi 002/003 family Driver");
  11MODULE_AUTHOR("Takashi Sakamoto <o-takashi@sakamocchi.jp>");
  12MODULE_LICENSE("GPL v2");
  13
  14#define VENDOR_DIGIDESIGN       0x00a07e
  15#define MODEL_CONSOLE           0x000001
  16#define MODEL_RACK              0x000002
  17#define SPEC_VERSION            0x000001
  18
  19static 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
  44static 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
  55static 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;
 108error:
 109        snd_card_free(card);
 110        return err;
 111}
 112
 113static 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
 124static 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
 132static 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};
 152MODULE_DEVICE_TABLE(ieee1394, snd_dg00x_id_table);
 153
 154static 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
 166static int __init snd_dg00x_init(void)
 167{
 168        return driver_register(&dg00x_driver.driver);
 169}
 170
 171static void __exit snd_dg00x_exit(void)
 172{
 173        driver_unregister(&dg00x_driver.driver);
 174}
 175
 176module_init(snd_dg00x_init);
 177module_exit(snd_dg00x_exit);
 178