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1// SPDX-License-Identifier: GPL-2.0-only2/*3 * tascam.c - a part of driver for TASCAM FireWire series4 *5 * Copyright (c) 2015 Takashi Sakamoto6 */7 8#include "tascam.h"9 10MODULE_DESCRIPTION("TASCAM FireWire series Driver");11MODULE_AUTHOR("Takashi Sakamoto <o-takashi@sakamocchi.jp>");12MODULE_LICENSE("GPL");13 14static const struct snd_tscm_spec model_specs[] = {15 {16 .name = "FW-1884",17 .has_adat = true,18 .has_spdif = true,19 .pcm_capture_analog_channels = 8,20 .pcm_playback_analog_channels = 8,21 .midi_capture_ports = 4,22 .midi_playback_ports = 4,23 },24 {25 .name = "FW-1082",26 .has_adat = false,27 .has_spdif = true,28 .pcm_capture_analog_channels = 8,29 .pcm_playback_analog_channels = 2,30 .midi_capture_ports = 2,31 .midi_playback_ports = 2,32 },33 {34 .name = "FW-1804",35 .has_adat = true,36 .has_spdif = true,37 .pcm_capture_analog_channels = 8,38 .pcm_playback_analog_channels = 2,39 .midi_capture_ports = 2,40 .midi_playback_ports = 4,41 },42};43 44static int identify_model(struct snd_tscm *tscm)45{46 struct fw_device *fw_dev = fw_parent_device(tscm->unit);47 const u32 *config_rom = fw_dev->config_rom;48 char model[9];49 unsigned int i;50 u8 c;51 52 if (fw_dev->config_rom_length < 30) {53 dev_err(&tscm->unit->device,54 "Configuration ROM is too short.\n");55 return -ENODEV;56 }57 58 /* Pick up model name from certain addresses. */59 for (i = 0; i < 8; i++) {60 c = config_rom[28 + i / 4] >> (24 - 8 * (i % 4));61 if (c == '\0')62 break;63 model[i] = c;64 }65 model[i] = '\0';66 67 for (i = 0; i < ARRAY_SIZE(model_specs); i++) {68 if (strcmp(model, model_specs[i].name) == 0) {69 tscm->spec = &model_specs[i];70 break;71 }72 }73 if (tscm->spec == NULL)74 return -ENODEV;75 76 strcpy(tscm->card->driver, "FW-TASCAM");77 strcpy(tscm->card->shortname, model);78 strcpy(tscm->card->mixername, model);79 snprintf(tscm->card->longname, sizeof(tscm->card->longname),80 "TASCAM %s, GUID %08x%08x at %s, S%d", model,81 fw_dev->config_rom[3], fw_dev->config_rom[4],82 dev_name(&tscm->unit->device), 100 << fw_dev->max_speed);83 84 return 0;85}86 87static void tscm_card_free(struct snd_card *card)88{89 struct snd_tscm *tscm = card->private_data;90 91 snd_tscm_transaction_unregister(tscm);92 snd_tscm_stream_destroy_duplex(tscm);93 94 mutex_destroy(&tscm->mutex);95 fw_unit_put(tscm->unit);96}97 98static int snd_tscm_probe(struct fw_unit *unit,99 const struct ieee1394_device_id *entry)100{101 struct snd_card *card;102 struct snd_tscm *tscm;103 int err;104 105 err = snd_card_new(&unit->device, -1, NULL, THIS_MODULE, sizeof(*tscm), &card);106 if (err < 0)107 return err;108 card->private_free = tscm_card_free;109 110 tscm = card->private_data;111 tscm->unit = fw_unit_get(unit);112 dev_set_drvdata(&unit->device, tscm);113 tscm->card = card;114 115 mutex_init(&tscm->mutex);116 spin_lock_init(&tscm->lock);117 init_waitqueue_head(&tscm->hwdep_wait);118 119 err = identify_model(tscm);120 if (err < 0)121 goto error;122 123 err = snd_tscm_transaction_register(tscm);124 if (err < 0)125 goto error;126 127 err = snd_tscm_stream_init_duplex(tscm);128 if (err < 0)129 goto error;130 131 snd_tscm_proc_init(tscm);132 133 err = snd_tscm_create_pcm_devices(tscm);134 if (err < 0)135 goto error;136 137 err = snd_tscm_create_midi_devices(tscm);138 if (err < 0)139 goto error;140 141 err = snd_tscm_create_hwdep_device(tscm);142 if (err < 0)143 goto error;144 145 err = snd_card_register(card);146 if (err < 0)147 goto error;148 149 return 0;150error:151 snd_card_free(card);152 return err;153}154 155static void snd_tscm_update(struct fw_unit *unit)156{157 struct snd_tscm *tscm = dev_get_drvdata(&unit->device);158 159 snd_tscm_transaction_reregister(tscm);160 161 mutex_lock(&tscm->mutex);162 snd_tscm_stream_update_duplex(tscm);163 mutex_unlock(&tscm->mutex);164}165 166static void snd_tscm_remove(struct fw_unit *unit)167{168 struct snd_tscm *tscm = dev_get_drvdata(&unit->device);169 170 // Block till all of ALSA character devices are released.171 snd_card_free(tscm->card);172}173 174static const struct ieee1394_device_id snd_tscm_id_table[] = {175 // Tascam, FW-1884.176 {177 .match_flags = IEEE1394_MATCH_VENDOR_ID |178 IEEE1394_MATCH_SPECIFIER_ID |179 IEEE1394_MATCH_VERSION,180 .vendor_id = 0x00022e,181 .specifier_id = 0x00022e,182 .version = 0x800000,183 },184 // Tascam, FE-8 (.version = 0x800001)185 // This kernel module doesn't support FE-8 because the most of features186 // can be implemented in userspace without any specific support of this187 // module.188 //189 // .version = 0x800002 is unknown.190 //191 // Tascam, FW-1082.192 {193 .match_flags = IEEE1394_MATCH_VENDOR_ID |194 IEEE1394_MATCH_SPECIFIER_ID |195 IEEE1394_MATCH_VERSION,196 .vendor_id = 0x00022e,197 .specifier_id = 0x00022e,198 .version = 0x800003,199 },200 // Tascam, FW-1804.201 {202 .match_flags = IEEE1394_MATCH_VENDOR_ID |203 IEEE1394_MATCH_SPECIFIER_ID |204 IEEE1394_MATCH_VERSION,205 .vendor_id = 0x00022e,206 .specifier_id = 0x00022e,207 .version = 0x800004,208 },209 {}210};211MODULE_DEVICE_TABLE(ieee1394, snd_tscm_id_table);212 213static struct fw_driver tscm_driver = {214 .driver = {215 .owner = THIS_MODULE,216 .name = KBUILD_MODNAME,217 .bus = &fw_bus_type,218 },219 .probe = snd_tscm_probe,220 .update = snd_tscm_update,221 .remove = snd_tscm_remove,222 .id_table = snd_tscm_id_table,223};224 225static int __init snd_tscm_init(void)226{227 return driver_register(&tscm_driver.driver);228}229 230static void __exit snd_tscm_exit(void)231{232 driver_unregister(&tscm_driver.driver);233}234 235module_init(snd_tscm_init);236module_exit(snd_tscm_exit);237