// SPDX-License-Identifier: GPL-2.0-only /* * tascam.c - a part of driver for TASCAM FireWire series * * Copyright (c) 2015 Takashi Sakamoto */ #include "tascam.h" MODULE_DESCRIPTION("TASCAM FireWire series Driver"); MODULE_AUTHOR("Takashi Sakamoto <o-takashi@sakamocchi.jp>"); MODULE_LICENSE("GPL"); static const 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); mutex_destroy(&tscm->mutex); fw_unit_put(tscm->unit); } 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; err = snd_card_new(&unit->device, -1, NULL, THIS_MODULE, sizeof(*tscm), &card); if (err < 0) return err; card->private_free = tscm_card_free; tscm = card->private_data; tscm->unit = fw_unit_get(unit); dev_set_drvdata(&unit->device, tscm); tscm->card = card; mutex_init(&tscm->mutex); spin_lock_init(&tscm->lock); init_waitqueue_head(&tscm->hwdep_wait); err = identify_model(tscm); if (err < 0) goto error; err = snd_tscm_transaction_register(tscm); if (err < 0) goto error; err = snd_tscm_stream_init_duplex(tscm); if (err < 0) goto error; snd_tscm_proc_init(tscm); err = snd_tscm_create_pcm_devices(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; return 0; 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); // Block till all of ALSA character devices are released. snd_card_free(tscm->card); } static const struct ieee1394_device_id snd_tscm_id_table[] = { // Tascam, FW-1884. { .match_flags = IEEE1394_MATCH_VENDOR_ID | IEEE1394_MATCH_SPECIFIER_ID | IEEE1394_MATCH_VERSION, .vendor_id = 0x00022e, .specifier_id = 0x00022e, .version = 0x800000, }, // Tascam, FE-8 (.version = 0x800001) // This kernel module doesn't support FE-8 because the most of features // can be implemented in userspace without any specific support of this // module. // // .version = 0x800002 is unknown. // // Tascam, FW-1082. { .match_flags = IEEE1394_MATCH_VENDOR_ID | IEEE1394_MATCH_SPECIFIER_ID | IEEE1394_MATCH_VERSION, .vendor_id = 0x00022e, .specifier_id = 0x00022e, .version = 0x800003, }, // Tascam, FW-1804. { .match_flags = IEEE1394_MATCH_VENDOR_ID | IEEE1394_MATCH_SPECIFIER_ID | IEEE1394_MATCH_VERSION, .vendor_id = 0x00022e, .specifier_id = 0x00022e, .version = 0x800004, }, {} }; MODULE_DEVICE_TABLE(ieee1394, snd_tscm_id_table); static struct fw_driver tscm_driver = { .driver = { .owner = THIS_MODULE, .name = KBUILD_MODNAME, .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);