| /* |
| * tascam.c - a part of driver for TASCAM FireWire series |
| * |
| * Copyright (c) 2015 Takashi Sakamoto |
| * |
| * Licensed under the terms of the GNU General Public License, version 2. |
| */ |
| |
| #include "tascam.h" |
| |
| MODULE_DESCRIPTION("TASCAM FireWire series Driver"); |
| MODULE_AUTHOR("Takashi Sakamoto <o-takashi@sakamocchi.jp>"); |
| MODULE_LICENSE("GPL v2"); |
| |
| static struct snd_tscm_spec model_specs[] = { |
| { |
| .name = "FW-1884", |
| .has_adat = true, |
| .has_spdif = true, |
| .pcm_capture_analog_channels = 8, |
| .pcm_playback_analog_channels = 8, |
| .midi_capture_ports = 4, |
| .midi_playback_ports = 4, |
| }, |
| { |
| .name = "FW-1082", |
| .has_adat = false, |
| .has_spdif = true, |
| .pcm_capture_analog_channels = 8, |
| .pcm_playback_analog_channels = 2, |
| .midi_capture_ports = 2, |
| .midi_playback_ports = 2, |
| }, |
| { |
| .name = "FW-1804", |
| .has_adat = true, |
| .has_spdif = true, |
| .pcm_capture_analog_channels = 8, |
| .pcm_playback_analog_channels = 2, |
| .midi_capture_ports = 2, |
| .midi_playback_ports = 4, |
| }, |
| }; |
| |
| static int identify_model(struct snd_tscm *tscm) |
| { |
| struct fw_device *fw_dev = fw_parent_device(tscm->unit); |
| const u32 *config_rom = fw_dev->config_rom; |
| char model[9]; |
| unsigned int i; |
| u8 c; |
| |
| if (fw_dev->config_rom_length < 30) { |
| dev_err(&tscm->unit->device, |
| "Configuration ROM is too short.\n"); |
| return -ENODEV; |
| } |
| |
| /* Pick up model name from certain addresses. */ |
| for (i = 0; i < 8; i++) { |
| c = config_rom[28 + i / 4] >> (24 - 8 * (i % 4)); |
| if (c == '\0') |
| break; |
| model[i] = c; |
| } |
| model[i] = '\0'; |
| |
| for (i = 0; i < ARRAY_SIZE(model_specs); i++) { |
| if (strcmp(model, model_specs[i].name) == 0) { |
| tscm->spec = &model_specs[i]; |
| break; |
| } |
| } |
| if (tscm->spec == NULL) |
| return -ENODEV; |
| |
| strcpy(tscm->card->driver, "FW-TASCAM"); |
| strcpy(tscm->card->shortname, model); |
| strcpy(tscm->card->mixername, model); |
| snprintf(tscm->card->longname, sizeof(tscm->card->longname), |
| "TASCAM %s, GUID %08x%08x at %s, S%d", model, |
| fw_dev->config_rom[3], fw_dev->config_rom[4], |
| dev_name(&tscm->unit->device), 100 << fw_dev->max_speed); |
| |
| return 0; |
| } |
| |
| static void tscm_card_free(struct snd_card *card) |
| { |
| struct snd_tscm *tscm = card->private_data; |
| |
| snd_tscm_transaction_unregister(tscm); |
| snd_tscm_stream_destroy_duplex(tscm); |
| |
| fw_unit_put(tscm->unit); |
| |
| mutex_destroy(&tscm->mutex); |
| } |
| |
| static int snd_tscm_probe(struct fw_unit *unit, |
| const struct ieee1394_device_id *entry) |
| { |
| struct snd_card *card; |
| struct snd_tscm *tscm; |
| int err; |
| |
| /* create card */ |
| err = snd_card_new(&unit->device, -1, NULL, THIS_MODULE, |
| sizeof(struct snd_tscm), &card); |
| if (err < 0) |
| return err; |
| card->private_free = tscm_card_free; |
| |
| /* initialize myself */ |
| tscm = card->private_data; |
| tscm->card = card; |
| tscm->unit = fw_unit_get(unit); |
| |
| mutex_init(&tscm->mutex); |
| spin_lock_init(&tscm->lock); |
| init_waitqueue_head(&tscm->hwdep_wait); |
| |
| err = identify_model(tscm); |
| if (err < 0) |
| goto error; |
| |
| snd_tscm_proc_init(tscm); |
| |
| err = snd_tscm_stream_init_duplex(tscm); |
| if (err < 0) |
| goto error; |
| |
| err = snd_tscm_create_pcm_devices(tscm); |
| if (err < 0) |
| goto error; |
| |
| err = snd_tscm_transaction_register(tscm); |
| if (err < 0) |
| goto error; |
| |
| err = snd_tscm_create_midi_devices(tscm); |
| if (err < 0) |
| goto error; |
| |
| err = snd_tscm_create_hwdep_device(tscm); |
| if (err < 0) |
| goto error; |
| |
| err = snd_card_register(card); |
| if (err < 0) |
| goto error; |
| |
| dev_set_drvdata(&unit->device, tscm); |
| |
| return err; |
| error: |
| snd_card_free(card); |
| return err; |
| } |
| |
| static void snd_tscm_update(struct fw_unit *unit) |
| { |
| struct snd_tscm *tscm = dev_get_drvdata(&unit->device); |
| |
| snd_tscm_transaction_reregister(tscm); |
| |
| mutex_lock(&tscm->mutex); |
| snd_tscm_stream_update_duplex(tscm); |
| mutex_unlock(&tscm->mutex); |
| } |
| |
| static void snd_tscm_remove(struct fw_unit *unit) |
| { |
| struct snd_tscm *tscm = dev_get_drvdata(&unit->device); |
| |
| /* No need to wait for releasing card object in this context. */ |
| snd_card_free_when_closed(tscm->card); |
| } |
| |
| static const struct ieee1394_device_id snd_tscm_id_table[] = { |
| { |
| .match_flags = IEEE1394_MATCH_VENDOR_ID | |
| IEEE1394_MATCH_SPECIFIER_ID, |
| .vendor_id = 0x00022e, |
| .specifier_id = 0x00022e, |
| }, |
| /* FE-08 requires reverse-engineering because it just has faders. */ |
| {} |
| }; |
| MODULE_DEVICE_TABLE(ieee1394, snd_tscm_id_table); |
| |
| static struct fw_driver tscm_driver = { |
| .driver = { |
| .owner = THIS_MODULE, |
| .name = "snd-firewire-tascam", |
| .bus = &fw_bus_type, |
| }, |
| .probe = snd_tscm_probe, |
| .update = snd_tscm_update, |
| .remove = snd_tscm_remove, |
| .id_table = snd_tscm_id_table, |
| }; |
| |
| static int __init snd_tscm_init(void) |
| { |
| return driver_register(&tscm_driver.driver); |
| } |
| |
| static void __exit snd_tscm_exit(void) |
| { |
| driver_unregister(&tscm_driver.driver); |
| } |
| |
| module_init(snd_tscm_init); |
| module_exit(snd_tscm_exit); |