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Commit 17c4e5ea authored by Takashi Sakamoto's avatar Takashi Sakamoto Committed by Takashi Iwai
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ALSA: fireface: add skeleton for RME Fireface series 



This commit adds a new driver for RME Fireface series. This commit just
creates/removes card instance according to IEEE 1394 bus event. More
functions will be added in following commits.

Three types of firmware have released by RME GmbH; for Fireface 400, for
Fireface 800 and for UCX/802/UFX. It's reasonable that these models use
different protocol for communication. Currently, I've investigated
Fireface 400 and nothing others.

Signed-off-by: default avatarTakashi Sakamoto <o-takashi@sakamocchi.jp>
Signed-off-by: default avatarTakashi Iwai <tiwai@suse.de>
parent f87e7f25

sound/firewire/Kconfig

+6 −0
Original line number Diff line number Diff line
@@ -152,4 +152,10 @@ config SND_FIREWIRE_MOTU 
	 To compile this driver as a module, choose M here: the module

	 will be called snd-firewire-motu.



config SND_FIREFACE

	tristate "RME Fireface series support"

	select SND_FIREWIRE_LIB

	help

	 Say Y here to include support for RME fireface series.



endif # SND_FIREWIRE

sound/firewire/Makefile

+1 −0
Original line number Diff line number Diff line
@@ -14,3 +14,4 @@ obj-$(CONFIG_SND_BEBOB) += bebob/ 
obj-$(CONFIG_SND_FIREWIRE_DIGI00X) += digi00x/

obj-$(CONFIG_SND_FIREWIRE_TASCAM) += tascam/

obj-$(CONFIG_SND_FIREWIRE_MOTU) += motu/

obj-$(CONFIG_SND_FIREFACE) += fireface/

sound/firewire/fireface/Makefile

0 → 100644
+2 −0
Original line number Diff line number Diff line 
snd-fireface-objs := ff.o

obj-$(CONFIG_SND_FIREFACE) += snd-fireface.o

sound/firewire/fireface/ff.c

0 → 100644
+113 −0
Original line number Diff line number Diff line 
/*

 * 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);

	const char *const model = "Fireface Skeleton";



	strcpy(ff->card->driver, "Fireface");

	strcpy(ff->card->shortname, model);

	strcpy(ff->card->mixername, model);

	snprintf(ff->card->longname, sizeof(ff->card->longname),

		 "RME %s, GUID %08x%08x at %s, S%d", model,

		 fw_dev->config_rom[3], fw_dev->config_rom[4],

		 dev_name(&ff->unit->device), 100 << fw_dev->max_speed);

}



static void ff_card_free(struct snd_card *card)

{

	struct snd_ff *ff = card->private_data;



	fw_unit_put(ff->unit);



	mutex_destroy(&ff->mutex);

}



static int snd_ff_probe(struct fw_unit *unit,

			   const struct ieee1394_device_id *entry)

{

	struct snd_card *card;

	struct snd_ff *ff;

	int err;



	err = snd_card_new(&unit->device, -1, NULL, THIS_MODULE,

			   sizeof(struct snd_ff), &card);

	if (err < 0)

		return err;

	card->private_free = ff_card_free;



	/* initialize myself */

	ff = card->private_data;

	ff->card = card;

	ff->unit = fw_unit_get(unit);

	dev_set_drvdata(&unit->device, ff);



	mutex_init(&ff->mutex);



	name_card(ff);



	err = snd_card_register(card);

	if (err < 0) {

		snd_card_free(card);

		return err;

	}



	return 0;

}



static void snd_ff_update(struct fw_unit *unit)

{

	return;

}



static void snd_ff_remove(struct fw_unit *unit)

{

	struct snd_ff *ff = dev_get_drvdata(&unit->device);



	/* No need to wait for releasing card object in this context. */

	snd_card_free_when_closed(ff->card);

}



static const struct ieee1394_device_id snd_ff_id_table[] = {

	{}

};

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);

sound/firewire/fireface/ff.h

0 → 100644
+28 −0
Original line number Diff line number Diff line 
/*

 * ff.h - 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.

 */



#ifndef SOUND_FIREFACE_H_INCLUDED

#define SOUND_FIREFACE_H_INCLUDED



#include <linux/device.h>

#include <linux/firewire.h>

#include <linux/firewire-constants.h>

#include <linux/module.h>

#include <linux/mod_devicetable.h>

#include <linux/mutex.h>

#include <linux/slab.h>

#include <linux/compat.h>



#include <sound/core.h>



struct snd_ff {

	struct snd_card *card;

	struct fw_unit *unit;

	struct mutex mutex;

};

#endif