208 lines · c
1// SPDX-License-Identifier: GPL-2.0-only2/*3 * motu.c - a part of driver for MOTU FireWire series4 *5 * Copyright (c) 2015-2017 Takashi Sakamoto <o-takashi@sakamocchi.jp>6 */7 8#include "motu.h"9 10#define OUI_MOTU 0x0001f211 12MODULE_DESCRIPTION("MOTU FireWire driver");13MODULE_AUTHOR("Takashi Sakamoto <o-takashi@sakamocchi.jp>");14MODULE_LICENSE("GPL");15 16const unsigned int snd_motu_clock_rates[SND_MOTU_CLOCK_RATE_COUNT] = {17 /* mode 0 */18 [0] = 44100,19 [1] = 48000,20 /* mode 1 */21 [2] = 88200,22 [3] = 96000,23 /* mode 2 */24 [4] = 176400,25 [5] = 192000,26};27 28static void name_card(struct snd_motu *motu)29{30 struct fw_device *fw_dev = fw_parent_device(motu->unit);31 struct fw_csr_iterator it;32 int key, val;33 u32 version = 0;34 35 fw_csr_iterator_init(&it, motu->unit->directory);36 while (fw_csr_iterator_next(&it, &key, &val)) {37 switch (key) {38 case CSR_MODEL:39 version = val;40 break;41 }42 }43 44 strcpy(motu->card->driver, "FW-MOTU");45 strcpy(motu->card->shortname, motu->spec->name);46 strcpy(motu->card->mixername, motu->spec->name);47 snprintf(motu->card->longname, sizeof(motu->card->longname),48 "MOTU %s (version:%06x), GUID %08x%08x at %s, S%d",49 motu->spec->name, version,50 fw_dev->config_rom[3], fw_dev->config_rom[4],51 dev_name(&motu->unit->device), 100 << fw_dev->max_speed);52}53 54static void motu_card_free(struct snd_card *card)55{56 struct snd_motu *motu = card->private_data;57 58 snd_motu_transaction_unregister(motu);59 snd_motu_stream_destroy_duplex(motu);60 61 mutex_destroy(&motu->mutex);62 fw_unit_put(motu->unit);63}64 65static int motu_probe(struct fw_unit *unit, const struct ieee1394_device_id *entry)66{67 struct snd_card *card;68 struct snd_motu *motu;69 int err;70 71 err = snd_card_new(&unit->device, -1, NULL, THIS_MODULE, sizeof(*motu), &card);72 if (err < 0)73 return err;74 card->private_free = motu_card_free;75 76 motu = card->private_data;77 motu->unit = fw_unit_get(unit);78 dev_set_drvdata(&unit->device, motu);79 motu->card = card;80 81 motu->spec = (const struct snd_motu_spec *)entry->driver_data;82 mutex_init(&motu->mutex);83 spin_lock_init(&motu->lock);84 init_waitqueue_head(&motu->hwdep_wait);85 86 name_card(motu);87 88 err = snd_motu_transaction_register(motu);89 if (err < 0)90 goto error;91 92 err = snd_motu_stream_init_duplex(motu);93 if (err < 0)94 goto error;95 96 snd_motu_proc_init(motu);97 98 err = snd_motu_create_pcm_devices(motu);99 if (err < 0)100 goto error;101 102 if ((motu->spec->flags & SND_MOTU_SPEC_RX_MIDI_2ND_Q) ||103 (motu->spec->flags & SND_MOTU_SPEC_RX_MIDI_3RD_Q) ||104 (motu->spec->flags & SND_MOTU_SPEC_TX_MIDI_2ND_Q) ||105 (motu->spec->flags & SND_MOTU_SPEC_TX_MIDI_3RD_Q)) {106 err = snd_motu_create_midi_devices(motu);107 if (err < 0)108 goto error;109 }110 111 err = snd_motu_create_hwdep_device(motu);112 if (err < 0)113 goto error;114 115 if (motu->spec->flags & SND_MOTU_SPEC_REGISTER_DSP) {116 err = snd_motu_register_dsp_message_parser_new(motu);117 if (err < 0)118 goto error;119 } else if (motu->spec->flags & SND_MOTU_SPEC_COMMAND_DSP) {120 err = snd_motu_command_dsp_message_parser_new(motu);121 if (err < 0)122 goto error;123 }124 125 err = snd_card_register(card);126 if (err < 0)127 goto error;128 129 return 0;130error:131 snd_card_free(card);132 return err;133}134 135static void motu_remove(struct fw_unit *unit)136{137 struct snd_motu *motu = dev_get_drvdata(&unit->device);138 139 // Block till all of ALSA character devices are released.140 snd_card_free(motu->card);141}142 143static void motu_bus_update(struct fw_unit *unit)144{145 struct snd_motu *motu = dev_get_drvdata(&unit->device);146 147 /* The handler address register becomes initialized. */148 snd_motu_transaction_reregister(motu);149}150 151#define SND_MOTU_DEV_ENTRY(model, data) \152{ \153 .match_flags = IEEE1394_MATCH_VENDOR_ID | \154 IEEE1394_MATCH_SPECIFIER_ID | \155 IEEE1394_MATCH_VERSION, \156 .vendor_id = OUI_MOTU, \157 .specifier_id = OUI_MOTU, \158 .version = model, \159 .driver_data = (kernel_ulong_t)data, \160}161 162static const struct ieee1394_device_id motu_id_table[] = {163 SND_MOTU_DEV_ENTRY(0x000001, &snd_motu_spec_828),164 SND_MOTU_DEV_ENTRY(0x000002, &snd_motu_spec_896),165 SND_MOTU_DEV_ENTRY(0x000003, &snd_motu_spec_828mk2),166 SND_MOTU_DEV_ENTRY(0x000005, &snd_motu_spec_896hd),167 SND_MOTU_DEV_ENTRY(0x000009, &snd_motu_spec_traveler),168 SND_MOTU_DEV_ENTRY(0x00000d, &snd_motu_spec_ultralite),169 SND_MOTU_DEV_ENTRY(0x00000f, &snd_motu_spec_8pre),170 SND_MOTU_DEV_ENTRY(0x000015, &snd_motu_spec_828mk3_fw), // FireWire only.171 SND_MOTU_DEV_ENTRY(0x000017, &snd_motu_spec_896mk3), // FireWire only.172 SND_MOTU_DEV_ENTRY(0x000019, &snd_motu_spec_ultralite_mk3), // FireWire only.173 SND_MOTU_DEV_ENTRY(0x00001b, &snd_motu_spec_traveler_mk3),174 SND_MOTU_DEV_ENTRY(0x000030, &snd_motu_spec_ultralite_mk3), // Hybrid.175 SND_MOTU_DEV_ENTRY(0x000035, &snd_motu_spec_828mk3_hybrid), // Hybrid.176 SND_MOTU_DEV_ENTRY(0x000037, &snd_motu_spec_896mk3), // Hybrid.177 SND_MOTU_DEV_ENTRY(0x000033, &snd_motu_spec_audio_express),178 SND_MOTU_DEV_ENTRY(0x000039, &snd_motu_spec_track16),179 SND_MOTU_DEV_ENTRY(0x000045, &snd_motu_spec_4pre),180 { }181};182MODULE_DEVICE_TABLE(ieee1394, motu_id_table);183 184static struct fw_driver motu_driver = {185 .driver = {186 .owner = THIS_MODULE,187 .name = KBUILD_MODNAME,188 .bus = &fw_bus_type,189 },190 .probe = motu_probe,191 .update = motu_bus_update,192 .remove = motu_remove,193 .id_table = motu_id_table,194};195 196static int __init alsa_motu_init(void)197{198 return driver_register(&motu_driver.driver);199}200 201static void __exit alsa_motu_exit(void)202{203 driver_unregister(&motu_driver.driver);204}205 206module_init(alsa_motu_init);207module_exit(alsa_motu_exit);208