1 /* 2 * tascam.c - a part of driver for TASCAM FireWire series 3 * 4 * Copyright (c) 2015 Takashi Sakamoto 5 * 6 * Licensed under the terms of the GNU General Public License, version 2. 7 */ 8 9 #include "tascam.h" 10 11 MODULE_DESCRIPTION("TASCAM FireWire series Driver"); 12 MODULE_AUTHOR("Takashi Sakamoto <o-takashi@sakamocchi.jp>"); 13 MODULE_LICENSE("GPL v2"); 14 15 static struct snd_tscm_spec model_specs[] = { 16 { 17 .name = "FW-1884", 18 .has_adat = true, 19 .has_spdif = true, 20 .pcm_capture_analog_channels = 8, 21 .pcm_playback_analog_channels = 8, 22 .midi_capture_ports = 4, 23 .midi_playback_ports = 4, 24 }, 25 { 26 .name = "FW-1082", 27 .has_adat = false, 28 .has_spdif = true, 29 .pcm_capture_analog_channels = 8, 30 .pcm_playback_analog_channels = 2, 31 .midi_capture_ports = 2, 32 .midi_playback_ports = 2, 33 }, 34 { 35 .name = "FW-1804", 36 .has_adat = true, 37 .has_spdif = true, 38 .pcm_capture_analog_channels = 8, 39 .pcm_playback_analog_channels = 2, 40 .midi_capture_ports = 2, 41 .midi_playback_ports = 4, 42 }, 43 }; 44 45 static int identify_model(struct snd_tscm *tscm) 46 { 47 struct fw_device *fw_dev = fw_parent_device(tscm->unit); 48 const u32 *config_rom = fw_dev->config_rom; 49 char model[9]; 50 unsigned int i; 51 u8 c; 52 53 if (fw_dev->config_rom_length < 30) { 54 dev_err(&tscm->unit->device, 55 "Configuration ROM is too short.\n"); 56 return -ENODEV; 57 } 58 59 /* Pick up model name from certain addresses. */ 60 for (i = 0; i < 8; i++) { 61 c = config_rom[28 + i / 4] >> (24 - 8 * (i % 4)); 62 if (c == '\0') 63 break; 64 model[i] = c; 65 } 66 model[i] = '\0'; 67 68 for (i = 0; i < ARRAY_SIZE(model_specs); i++) { 69 if (strcmp(model, model_specs[i].name) == 0) { 70 tscm->spec = &model_specs[i]; 71 break; 72 } 73 } 74 if (tscm->spec == NULL) 75 return -ENODEV; 76 77 strcpy(tscm->card->driver, "FW-TASCAM"); 78 strcpy(tscm->card->shortname, model); 79 strcpy(tscm->card->mixername, model); 80 snprintf(tscm->card->longname, sizeof(tscm->card->longname), 81 "TASCAM %s, GUID %08x%08x at %s, S%d", model, 82 fw_dev->config_rom[3], fw_dev->config_rom[4], 83 dev_name(&tscm->unit->device), 100 << fw_dev->max_speed); 84 85 return 0; 86 } 87 88 static void tscm_card_free(struct snd_card *card) 89 { 90 struct snd_tscm *tscm = card->private_data; 91 92 snd_tscm_transaction_unregister(tscm); 93 snd_tscm_stream_destroy_duplex(tscm); 94 95 fw_unit_put(tscm->unit); 96 97 mutex_destroy(&tscm->mutex); 98 } 99 100 static int snd_tscm_probe(struct fw_unit *unit, 101 const struct ieee1394_device_id *entry) 102 { 103 struct snd_card *card; 104 struct snd_tscm *tscm; 105 int err; 106 107 /* create card */ 108 err = snd_card_new(&unit->device, -1, NULL, THIS_MODULE, 109 sizeof(struct snd_tscm), &card); 110 if (err < 0) 111 return err; 112 card->private_free = tscm_card_free; 113 114 /* initialize myself */ 115 tscm = card->private_data; 116 tscm->card = card; 117 tscm->unit = fw_unit_get(unit); 118 119 mutex_init(&tscm->mutex); 120 spin_lock_init(&tscm->lock); 121 init_waitqueue_head(&tscm->hwdep_wait); 122 123 err = identify_model(tscm); 124 if (err < 0) 125 goto error; 126 127 snd_tscm_proc_init(tscm); 128 129 err = snd_tscm_stream_init_duplex(tscm); 130 if (err < 0) 131 goto error; 132 133 err = snd_tscm_create_pcm_devices(tscm); 134 if (err < 0) 135 goto error; 136 137 err = snd_tscm_transaction_register(tscm); 138 if (err < 0) 139 goto error; 140 141 err = snd_tscm_create_midi_devices(tscm); 142 if (err < 0) 143 goto error; 144 145 err = snd_tscm_create_hwdep_device(tscm); 146 if (err < 0) 147 goto error; 148 149 err = snd_card_register(card); 150 if (err < 0) 151 goto error; 152 153 dev_set_drvdata(&unit->device, tscm); 154 155 return err; 156 error: 157 snd_card_free(card); 158 return err; 159 } 160 161 static void snd_tscm_update(struct fw_unit *unit) 162 { 163 struct snd_tscm *tscm = dev_get_drvdata(&unit->device); 164 165 snd_tscm_transaction_reregister(tscm); 166 167 mutex_lock(&tscm->mutex); 168 snd_tscm_stream_update_duplex(tscm); 169 mutex_unlock(&tscm->mutex); 170 } 171 172 static void snd_tscm_remove(struct fw_unit *unit) 173 { 174 struct snd_tscm *tscm = dev_get_drvdata(&unit->device); 175 176 /* No need to wait for releasing card object in this context. */ 177 snd_card_free_when_closed(tscm->card); 178 } 179 180 static const struct ieee1394_device_id snd_tscm_id_table[] = { 181 { 182 .match_flags = IEEE1394_MATCH_VENDOR_ID | 183 IEEE1394_MATCH_SPECIFIER_ID, 184 .vendor_id = 0x00022e, 185 .specifier_id = 0x00022e, 186 }, 187 /* FE-08 requires reverse-engineering because it just has faders. */ 188 {} 189 }; 190 MODULE_DEVICE_TABLE(ieee1394, snd_tscm_id_table); 191 192 static struct fw_driver tscm_driver = { 193 .driver = { 194 .owner = THIS_MODULE, 195 .name = "snd-firewire-tascam", 196 .bus = &fw_bus_type, 197 }, 198 .probe = snd_tscm_probe, 199 .update = snd_tscm_update, 200 .remove = snd_tscm_remove, 201 .id_table = snd_tscm_id_table, 202 }; 203 204 static int __init snd_tscm_init(void) 205 { 206 return driver_register(&tscm_driver.driver); 207 } 208 209 static void __exit snd_tscm_exit(void) 210 { 211 driver_unregister(&tscm_driver.driver); 212 } 213 214 module_init(snd_tscm_init); 215 module_exit(snd_tscm_exit); 216