rjw | 1f88458 | 2022-01-06 17:20:42 +0800 | [diff] [blame^] | 1 | /* |
| 2 | * ff.c - a part of driver for RME Fireface series |
| 3 | * |
| 4 | * Copyright (c) 2015-2017 Takashi Sakamoto |
| 5 | * |
| 6 | * Licensed under the terms of the GNU General Public License, version 2. |
| 7 | */ |
| 8 | |
| 9 | #include "ff.h" |
| 10 | |
| 11 | #define OUI_RME 0x000a35 |
| 12 | |
| 13 | MODULE_DESCRIPTION("RME Fireface series Driver"); |
| 14 | MODULE_AUTHOR("Takashi Sakamoto <o-takashi@sakamocchi.jp>"); |
| 15 | MODULE_LICENSE("GPL v2"); |
| 16 | |
| 17 | static void name_card(struct snd_ff *ff) |
| 18 | { |
| 19 | struct fw_device *fw_dev = fw_parent_device(ff->unit); |
| 20 | |
| 21 | strcpy(ff->card->driver, "Fireface"); |
| 22 | strcpy(ff->card->shortname, ff->spec->name); |
| 23 | strcpy(ff->card->mixername, ff->spec->name); |
| 24 | snprintf(ff->card->longname, sizeof(ff->card->longname), |
| 25 | "RME %s, GUID %08x%08x at %s, S%d", ff->spec->name, |
| 26 | fw_dev->config_rom[3], fw_dev->config_rom[4], |
| 27 | dev_name(&ff->unit->device), 100 << fw_dev->max_speed); |
| 28 | } |
| 29 | |
| 30 | static void ff_free(struct snd_ff *ff) |
| 31 | { |
| 32 | snd_ff_stream_destroy_duplex(ff); |
| 33 | snd_ff_transaction_unregister(ff); |
| 34 | |
| 35 | fw_unit_put(ff->unit); |
| 36 | |
| 37 | mutex_destroy(&ff->mutex); |
| 38 | kfree(ff); |
| 39 | } |
| 40 | |
| 41 | static void ff_card_free(struct snd_card *card) |
| 42 | { |
| 43 | ff_free(card->private_data); |
| 44 | } |
| 45 | |
| 46 | static void do_registration(struct work_struct *work) |
| 47 | { |
| 48 | struct snd_ff *ff = container_of(work, struct snd_ff, dwork.work); |
| 49 | int err; |
| 50 | |
| 51 | if (ff->registered) |
| 52 | return; |
| 53 | |
| 54 | err = snd_card_new(&ff->unit->device, -1, NULL, THIS_MODULE, 0, |
| 55 | &ff->card); |
| 56 | if (err < 0) |
| 57 | return; |
| 58 | |
| 59 | err = snd_ff_transaction_register(ff); |
| 60 | if (err < 0) |
| 61 | goto error; |
| 62 | |
| 63 | name_card(ff); |
| 64 | |
| 65 | err = snd_ff_stream_init_duplex(ff); |
| 66 | if (err < 0) |
| 67 | goto error; |
| 68 | |
| 69 | snd_ff_proc_init(ff); |
| 70 | |
| 71 | err = snd_ff_create_midi_devices(ff); |
| 72 | if (err < 0) |
| 73 | goto error; |
| 74 | |
| 75 | err = snd_ff_create_pcm_devices(ff); |
| 76 | if (err < 0) |
| 77 | goto error; |
| 78 | |
| 79 | err = snd_ff_create_hwdep_devices(ff); |
| 80 | if (err < 0) |
| 81 | goto error; |
| 82 | |
| 83 | err = snd_card_register(ff->card); |
| 84 | if (err < 0) |
| 85 | goto error; |
| 86 | |
| 87 | ff->card->private_free = ff_card_free; |
| 88 | ff->card->private_data = ff; |
| 89 | ff->registered = true; |
| 90 | |
| 91 | return; |
| 92 | error: |
| 93 | snd_ff_transaction_unregister(ff); |
| 94 | snd_ff_stream_destroy_duplex(ff); |
| 95 | snd_card_free(ff->card); |
| 96 | dev_info(&ff->unit->device, |
| 97 | "Sound card registration failed: %d\n", err); |
| 98 | } |
| 99 | |
| 100 | static int snd_ff_probe(struct fw_unit *unit, |
| 101 | const struct ieee1394_device_id *entry) |
| 102 | { |
| 103 | struct snd_ff *ff; |
| 104 | |
| 105 | ff = kzalloc(sizeof(struct snd_ff), GFP_KERNEL); |
| 106 | if (ff == NULL) |
| 107 | return -ENOMEM; |
| 108 | |
| 109 | /* initialize myself */ |
| 110 | ff->unit = fw_unit_get(unit); |
| 111 | dev_set_drvdata(&unit->device, ff); |
| 112 | |
| 113 | mutex_init(&ff->mutex); |
| 114 | spin_lock_init(&ff->lock); |
| 115 | init_waitqueue_head(&ff->hwdep_wait); |
| 116 | |
| 117 | ff->spec = (const struct snd_ff_spec *)entry->driver_data; |
| 118 | |
| 119 | /* Register this sound card later. */ |
| 120 | INIT_DEFERRABLE_WORK(&ff->dwork, do_registration); |
| 121 | snd_fw_schedule_registration(unit, &ff->dwork); |
| 122 | |
| 123 | return 0; |
| 124 | } |
| 125 | |
| 126 | static void snd_ff_update(struct fw_unit *unit) |
| 127 | { |
| 128 | struct snd_ff *ff = dev_get_drvdata(&unit->device); |
| 129 | |
| 130 | /* Postpone a workqueue for deferred registration. */ |
| 131 | if (!ff->registered) |
| 132 | snd_fw_schedule_registration(unit, &ff->dwork); |
| 133 | |
| 134 | snd_ff_transaction_reregister(ff); |
| 135 | |
| 136 | if (ff->registered) |
| 137 | snd_ff_stream_update_duplex(ff); |
| 138 | } |
| 139 | |
| 140 | static void snd_ff_remove(struct fw_unit *unit) |
| 141 | { |
| 142 | struct snd_ff *ff = dev_get_drvdata(&unit->device); |
| 143 | |
| 144 | /* |
| 145 | * Confirm to stop the work for registration before the sound card is |
| 146 | * going to be released. The work is not scheduled again because bus |
| 147 | * reset handler is not called anymore. |
| 148 | */ |
| 149 | cancel_work_sync(&ff->dwork.work); |
| 150 | |
| 151 | if (ff->registered) { |
| 152 | /* No need to wait for releasing card object in this context. */ |
| 153 | snd_card_free_when_closed(ff->card); |
| 154 | } else { |
| 155 | /* Don't forget this case. */ |
| 156 | ff_free(ff); |
| 157 | } |
| 158 | } |
| 159 | |
| 160 | static const struct snd_ff_spec spec_ff400 = { |
| 161 | .name = "Fireface400", |
| 162 | .pcm_capture_channels = {18, 14, 10}, |
| 163 | .pcm_playback_channels = {18, 14, 10}, |
| 164 | .midi_in_ports = 2, |
| 165 | .midi_out_ports = 2, |
| 166 | .protocol = &snd_ff_protocol_ff400, |
| 167 | }; |
| 168 | |
| 169 | static const struct ieee1394_device_id snd_ff_id_table[] = { |
| 170 | /* Fireface 400 */ |
| 171 | { |
| 172 | .match_flags = IEEE1394_MATCH_VENDOR_ID | |
| 173 | IEEE1394_MATCH_SPECIFIER_ID | |
| 174 | IEEE1394_MATCH_VERSION | |
| 175 | IEEE1394_MATCH_MODEL_ID, |
| 176 | .vendor_id = OUI_RME, |
| 177 | .specifier_id = 0x000a35, |
| 178 | .version = 0x000002, |
| 179 | .model_id = 0x101800, |
| 180 | .driver_data = (kernel_ulong_t)&spec_ff400, |
| 181 | }, |
| 182 | {} |
| 183 | }; |
| 184 | MODULE_DEVICE_TABLE(ieee1394, snd_ff_id_table); |
| 185 | |
| 186 | static struct fw_driver ff_driver = { |
| 187 | .driver = { |
| 188 | .owner = THIS_MODULE, |
| 189 | .name = "snd-fireface", |
| 190 | .bus = &fw_bus_type, |
| 191 | }, |
| 192 | .probe = snd_ff_probe, |
| 193 | .update = snd_ff_update, |
| 194 | .remove = snd_ff_remove, |
| 195 | .id_table = snd_ff_id_table, |
| 196 | }; |
| 197 | |
| 198 | static int __init snd_ff_init(void) |
| 199 | { |
| 200 | return driver_register(&ff_driver.driver); |
| 201 | } |
| 202 | |
| 203 | static void __exit snd_ff_exit(void) |
| 204 | { |
| 205 | driver_unregister(&ff_driver.driver); |
| 206 | } |
| 207 | |
| 208 | module_init(snd_ff_init); |
| 209 | module_exit(snd_ff_exit); |