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