Takashi Sakamoto | c0949b2 | 2015-10-01 22:02:11 +0900 | [diff] [blame^] | 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 int check_name(struct snd_tscm *tscm) |
| 16 | { |
| 17 | struct fw_device *fw_dev = fw_parent_device(tscm->unit); |
| 18 | char vendor[8]; |
| 19 | char model[8]; |
| 20 | __u32 data; |
| 21 | |
| 22 | /* Retrieve model name. */ |
| 23 | data = be32_to_cpu(fw_dev->config_rom[28]); |
| 24 | memcpy(model, &data, 4); |
| 25 | data = be32_to_cpu(fw_dev->config_rom[29]); |
| 26 | memcpy(model + 4, &data, 4); |
| 27 | model[7] = '\0'; |
| 28 | |
| 29 | /* Retrieve vendor name. */ |
| 30 | data = be32_to_cpu(fw_dev->config_rom[23]); |
| 31 | memcpy(vendor, &data, 4); |
| 32 | data = be32_to_cpu(fw_dev->config_rom[24]); |
| 33 | memcpy(vendor + 4, &data, 4); |
| 34 | vendor[7] = '\0'; |
| 35 | |
| 36 | strcpy(tscm->card->driver, "FW-TASCAM"); |
| 37 | strcpy(tscm->card->shortname, model); |
| 38 | strcpy(tscm->card->mixername, model); |
| 39 | snprintf(tscm->card->longname, sizeof(tscm->card->longname), |
| 40 | "%s %s, GUID %08x%08x at %s, S%d", vendor, model, |
| 41 | cpu_to_be32(fw_dev->config_rom[3]), |
| 42 | cpu_to_be32(fw_dev->config_rom[4]), |
| 43 | dev_name(&tscm->unit->device), 100 << fw_dev->max_speed); |
| 44 | |
| 45 | return 0; |
| 46 | } |
| 47 | |
| 48 | static void tscm_card_free(struct snd_card *card) |
| 49 | { |
| 50 | struct snd_tscm *tscm = card->private_data; |
| 51 | |
| 52 | fw_unit_put(tscm->unit); |
| 53 | |
| 54 | mutex_destroy(&tscm->mutex); |
| 55 | } |
| 56 | |
| 57 | static int snd_tscm_probe(struct fw_unit *unit, |
| 58 | const struct ieee1394_device_id *entry) |
| 59 | { |
| 60 | struct snd_card *card; |
| 61 | struct snd_tscm *tscm; |
| 62 | int err; |
| 63 | |
| 64 | /* create card */ |
| 65 | err = snd_card_new(&unit->device, -1, NULL, THIS_MODULE, |
| 66 | sizeof(struct snd_tscm), &card); |
| 67 | if (err < 0) |
| 68 | return err; |
| 69 | card->private_free = tscm_card_free; |
| 70 | |
| 71 | /* initialize myself */ |
| 72 | tscm = card->private_data; |
| 73 | tscm->card = card; |
| 74 | tscm->unit = fw_unit_get(unit); |
| 75 | |
| 76 | mutex_init(&tscm->mutex); |
| 77 | |
| 78 | err = check_name(tscm); |
| 79 | if (err < 0) |
| 80 | goto error; |
| 81 | |
| 82 | err = snd_card_register(card); |
| 83 | if (err < 0) |
| 84 | goto error; |
| 85 | |
| 86 | dev_set_drvdata(&unit->device, tscm); |
| 87 | |
| 88 | return err; |
| 89 | error: |
| 90 | snd_card_free(card); |
| 91 | return err; |
| 92 | } |
| 93 | |
| 94 | static void snd_tscm_update(struct fw_unit *unit) |
| 95 | { |
| 96 | return; |
| 97 | } |
| 98 | |
| 99 | static void snd_tscm_remove(struct fw_unit *unit) |
| 100 | { |
| 101 | struct snd_tscm *tscm = dev_get_drvdata(&unit->device); |
| 102 | |
| 103 | /* No need to wait for releasing card object in this context. */ |
| 104 | snd_card_free_when_closed(tscm->card); |
| 105 | } |
| 106 | |
| 107 | static const struct ieee1394_device_id snd_tscm_id_table[] = { |
| 108 | /* FW-1082 */ |
| 109 | { |
| 110 | .match_flags = IEEE1394_MATCH_VENDOR_ID | |
| 111 | IEEE1394_MATCH_SPECIFIER_ID | |
| 112 | IEEE1394_MATCH_VERSION, |
| 113 | .vendor_id = 0x00022e, |
| 114 | .specifier_id = 0x00022e, |
| 115 | .version = 0x800003, |
| 116 | }, |
| 117 | /* FW-1884 */ |
| 118 | { |
| 119 | .match_flags = IEEE1394_MATCH_VENDOR_ID | |
| 120 | IEEE1394_MATCH_SPECIFIER_ID | |
| 121 | IEEE1394_MATCH_VERSION, |
| 122 | .vendor_id = 0x00022e, |
| 123 | .specifier_id = 0x00022e, |
| 124 | .version = 0x800000, |
| 125 | }, |
| 126 | /* FW-1804 mey be supported if IDs are clear. */ |
| 127 | /* FE-08 requires reverse-engineering because it just has faders. */ |
| 128 | {} |
| 129 | }; |
| 130 | MODULE_DEVICE_TABLE(ieee1394, snd_tscm_id_table); |
| 131 | |
| 132 | static struct fw_driver tscm_driver = { |
| 133 | .driver = { |
| 134 | .owner = THIS_MODULE, |
| 135 | .name = "snd-firewire-tascam", |
| 136 | .bus = &fw_bus_type, |
| 137 | }, |
| 138 | .probe = snd_tscm_probe, |
| 139 | .update = snd_tscm_update, |
| 140 | .remove = snd_tscm_remove, |
| 141 | .id_table = snd_tscm_id_table, |
| 142 | }; |
| 143 | |
| 144 | static int __init snd_tscm_init(void) |
| 145 | { |
| 146 | return driver_register(&tscm_driver.driver); |
| 147 | } |
| 148 | |
| 149 | static void __exit snd_tscm_exit(void) |
| 150 | { |
| 151 | driver_unregister(&tscm_driver.driver); |
| 152 | } |
| 153 | |
| 154 | module_init(snd_tscm_init); |
| 155 | module_exit(snd_tscm_exit); |