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authorTakashi Sakamoto <o-takashi@sakamocchi.jp>2017-03-31 22:05:59 +0900
committerTakashi Iwai <tiwai@suse.de>2017-04-05 21:31:24 +0200
commit17c4e5eadc4ab7db4c0655c124174a6d8e5f4dc5 (patch)
tree0db1138d5a588f58f05b4a13a4899821c5464e0c /sound/firewire/fireface
parentf87e7f25893d7db4da465c6b50882197e518d4af (diff)
downloadlinux-17c4e5eadc4ab7db4c0655c124174a6d8e5f4dc5.tar.bz2
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: Takashi Sakamoto <o-takashi@sakamocchi.jp> Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound/firewire/fireface')
-rw-r--r--sound/firewire/fireface/Makefile2
-rw-r--r--sound/firewire/fireface/ff.c113
-rw-r--r--sound/firewire/fireface/ff.h28
3 files changed, 143 insertions, 0 deletions
diff --git a/sound/firewire/fireface/Makefile b/sound/firewire/fireface/Makefile
new file mode 100644
index 000000000000..2c64ef6efacb
--- /dev/null
+++ b/sound/firewire/fireface/Makefile
@@ -0,0 +1,2 @@
+snd-fireface-objs := ff.o
+obj-$(CONFIG_SND_FIREFACE) += snd-fireface.o
diff --git a/sound/firewire/fireface/ff.c b/sound/firewire/fireface/ff.c
new file mode 100644
index 000000000000..358bba23deeb
--- /dev/null
+++ b/sound/firewire/fireface/ff.c
@@ -0,0 +1,113 @@
+/*
+ * 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);
diff --git a/sound/firewire/fireface/ff.h b/sound/firewire/fireface/ff.h
new file mode 100644
index 000000000000..64d488ec8264
--- /dev/null
+++ b/sound/firewire/fireface/ff.h
@@ -0,0 +1,28 @@
+/*
+ * 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