diff options
Diffstat (limited to 'sound/firewire/fireface/ff.c')
| -rw-r--r-- | sound/firewire/fireface/ff.c | 209 |
1 files changed, 209 insertions, 0 deletions
diff --git a/sound/firewire/fireface/ff.c b/sound/firewire/fireface/ff.c new file mode 100644 index 000000000..4974bc798 --- /dev/null +++ b/sound/firewire/fireface/ff.c @@ -0,0 +1,209 @@ +/* + * ff.c - a part of driver for RME Fireface series + * + * Copyright (c) 2015-2017 Takashi Sakamoto + * + * Licensed under the terms of the GNU General Public License, version 2. + */ + +#include "ff.h" + +#define OUI_RME 0x000a35 + +MODULE_DESCRIPTION("RME Fireface series Driver"); +MODULE_AUTHOR("Takashi Sakamoto <o-takashi@sakamocchi.jp>"); +MODULE_LICENSE("GPL v2"); + +static void name_card(struct snd_ff *ff) +{ + struct fw_device *fw_dev = fw_parent_device(ff->unit); + + strcpy(ff->card->driver, "Fireface"); + strcpy(ff->card->shortname, ff->spec->name); + strcpy(ff->card->mixername, ff->spec->name); + snprintf(ff->card->longname, sizeof(ff->card->longname), + "RME %s, GUID %08x%08x at %s, S%d", ff->spec->name, + fw_dev->config_rom[3], fw_dev->config_rom[4], + dev_name(&ff->unit->device), 100 << fw_dev->max_speed); +} + +static void ff_free(struct snd_ff *ff) +{ + snd_ff_stream_destroy_duplex(ff); + snd_ff_transaction_unregister(ff); + + fw_unit_put(ff->unit); + + mutex_destroy(&ff->mutex); + kfree(ff); +} + +static void ff_card_free(struct snd_card *card) +{ + ff_free(card->private_data); +} + +static void do_registration(struct work_struct *work) +{ + struct snd_ff *ff = container_of(work, struct snd_ff, dwork.work); + int err; + + if (ff->registered) + return; + + err = snd_card_new(&ff->unit->device, -1, NULL, THIS_MODULE, 0, + &ff->card); + if (err < 0) + return; + + err = snd_ff_transaction_register(ff); + if (err < 0) + goto error; + + name_card(ff); + + err = snd_ff_stream_init_duplex(ff); + if (err < 0) + goto error; + + snd_ff_proc_init(ff); + + err = snd_ff_create_midi_devices(ff); + if (err < 0) + goto error; + + err = snd_ff_create_pcm_devices(ff); + if (err < 0) + goto error; + + err = snd_ff_create_hwdep_devices(ff); + if (err < 0) + goto error; + + err = snd_card_register(ff->card); + if (err < 0) + goto error; + + ff->card->private_free = ff_card_free; + ff->card->private_data = ff; + ff->registered = true; + + return; +error: + snd_ff_transaction_unregister(ff); + snd_ff_stream_destroy_duplex(ff); + snd_card_free(ff->card); + dev_info(&ff->unit->device, + "Sound card registration failed: %d\n", err); +} + +static int snd_ff_probe(struct fw_unit *unit, + const struct ieee1394_device_id *entry) +{ + struct snd_ff *ff; + + ff = kzalloc(sizeof(struct snd_ff), GFP_KERNEL); + if (ff == NULL) + return -ENOMEM; + + /* initialize myself */ + ff->unit = fw_unit_get(unit); + dev_set_drvdata(&unit->device, ff); + + mutex_init(&ff->mutex); + spin_lock_init(&ff->lock); + init_waitqueue_head(&ff->hwdep_wait); + + ff->spec = (const struct snd_ff_spec *)entry->driver_data; + + /* Register this sound card later. */ + INIT_DEFERRABLE_WORK(&ff->dwork, do_registration); + snd_fw_schedule_registration(unit, &ff->dwork); + + return 0; +} + +static void snd_ff_update(struct fw_unit *unit) +{ + struct snd_ff *ff = dev_get_drvdata(&unit->device); + + /* Postpone a workqueue for deferred registration. */ + if (!ff->registered) + snd_fw_schedule_registration(unit, &ff->dwork); + + snd_ff_transaction_reregister(ff); + + if (ff->registered) + snd_ff_stream_update_duplex(ff); +} + +static void snd_ff_remove(struct fw_unit *unit) +{ + struct snd_ff *ff = dev_get_drvdata(&unit->device); + + /* + * Confirm to stop the work for registration before the sound card is + * going to be released. The work is not scheduled again because bus + * reset handler is not called anymore. + */ + cancel_work_sync(&ff->dwork.work); + + if (ff->registered) { + /* No need to wait for releasing card object in this context. */ + snd_card_free_when_closed(ff->card); + } else { + /* Don't forget this case. */ + ff_free(ff); + } +} + +static const struct snd_ff_spec spec_ff400 = { + .name = "Fireface400", + .pcm_capture_channels = {18, 14, 10}, + .pcm_playback_channels = {18, 14, 10}, + .midi_in_ports = 2, + .midi_out_ports = 2, + .protocol = &snd_ff_protocol_ff400, +}; + +static const struct ieee1394_device_id snd_ff_id_table[] = { + /* Fireface 400 */ + { + .match_flags = IEEE1394_MATCH_VENDOR_ID | + IEEE1394_MATCH_SPECIFIER_ID | + IEEE1394_MATCH_VERSION | + IEEE1394_MATCH_MODEL_ID, + .vendor_id = OUI_RME, + .specifier_id = 0x000a35, + .version = 0x000002, + .model_id = 0x101800, + .driver_data = (kernel_ulong_t)&spec_ff400, + }, + {} +}; +MODULE_DEVICE_TABLE(ieee1394, snd_ff_id_table); + +static struct fw_driver ff_driver = { + .driver = { + .owner = THIS_MODULE, + .name = "snd-fireface", + .bus = &fw_bus_type, + }, + .probe = snd_ff_probe, + .update = snd_ff_update, + .remove = snd_ff_remove, + .id_table = snd_ff_id_table, +}; + +static int __init snd_ff_init(void) +{ + return driver_register(&ff_driver.driver); +} + +static void __exit snd_ff_exit(void) +{ + driver_unregister(&ff_driver.driver); +} + +module_init(snd_ff_init); +module_exit(snd_ff_exit); |