This commit adds an new driver for MOTU FireWire series. In this commit, this driver just creates/removes card instance according to bus event. More functionalities will be added in following commits.
Signed-off-by: Takashi Sakamoto o-takashi@sakamocchi.jp --- sound/firewire/Kconfig | 10 ++++ sound/firewire/Makefile | 1 + sound/firewire/motu/Makefile | 2 + sound/firewire/motu/motu.c | 135 +++++++++++++++++++++++++++++++++++++++++++ sound/firewire/motu/motu.h | 29 ++++++++++ 5 files changed, 177 insertions(+) create mode 100644 sound/firewire/motu/Makefile create mode 100644 sound/firewire/motu/motu.c create mode 100644 sound/firewire/motu/motu.h
diff --git a/sound/firewire/Kconfig b/sound/firewire/Kconfig index 9f00696..11a3285 100644 --- a/sound/firewire/Kconfig +++ b/sound/firewire/Kconfig @@ -140,4 +140,14 @@ config SND_FIREWIRE_TASCAM To compile this driver as a module, choose M here: the module will be called snd-firewire-tascam.
+config SND_FIREWIRE_MOTU + tristate "Mark of the unicorn FireWire series support" + select SND_FIREWIRE_LIB + select SND_HWDEP + help + Say Y here to enable support for FireWire devices which MOTU produced: + + To compile this driver as a module, choose M here: the module + will be called snd-firewire-motu. + endif # SND_FIREWIRE diff --git a/sound/firewire/Makefile b/sound/firewire/Makefile index 0ee1fb1..9388ded 100644 --- a/sound/firewire/Makefile +++ b/sound/firewire/Makefile @@ -13,3 +13,4 @@ obj-$(CONFIG_SND_FIREWORKS) += fireworks/ obj-$(CONFIG_SND_BEBOB) += bebob/ obj-$(CONFIG_SND_FIREWIRE_DIGI00X) += digi00x/ obj-$(CONFIG_SND_FIREWIRE_TASCAM) += tascam/ +obj-$(CONFIG_SND_FIREWIRE_MOTU) += motu/ diff --git a/sound/firewire/motu/Makefile b/sound/firewire/motu/Makefile new file mode 100644 index 0000000..d7819d5 --- /dev/null +++ b/sound/firewire/motu/Makefile @@ -0,0 +1,2 @@ +snd-firewire-motu-objs := motu.o +obj-$(CONFIG_SND_FIREWIRE_MOTU) += snd-firewire-motu.o diff --git a/sound/firewire/motu/motu.c b/sound/firewire/motu/motu.c new file mode 100644 index 0000000..82aae6d --- /dev/null +++ b/sound/firewire/motu/motu.c @@ -0,0 +1,135 @@ +/* + * motu.c - a part of driver for MOTU FireWire series + * + * Copyright (c) 2015-2017 Takashi Sakamoto o-takashi@sakamocchi.jp + * + * Licensed under the terms of the GNU General Public License, version 2. + */ + +#include "motu.h" + +#define OUI_MOTU 0x0001f2 + +MODULE_DESCRIPTION("MOTU FireWire driver"); +MODULE_AUTHOR("Takashi Sakamoto o-takashi@sakamocchi.jp"); +MODULE_LICENSE("GPL v2"); + +static void name_card(struct snd_motu *motu) +{ + struct fw_device *fw_dev = fw_parent_device(motu->unit); + struct fw_csr_iterator it; + int key, val; + u32 version = 0; + + fw_csr_iterator_init(&it, motu->unit->directory); + while (fw_csr_iterator_next(&it, &key, &val)) { + switch (key) { + case CSR_VERSION: + version = val; + break; + } + } + + strcpy(motu->card->driver, "FW-MOTU"); + snprintf(motu->card->longname, sizeof(motu->card->longname), + "MOTU (version:%d), GUID %08x%08x at %s, S%d", + version, + fw_dev->config_rom[3], fw_dev->config_rom[4], + dev_name(&motu->unit->device), 100 << fw_dev->max_speed); +} + +static void motu_card_free(struct snd_card *card) +{ + struct snd_motu *motu = card->private_data; + + fw_unit_put(motu->unit); + + mutex_destroy(&motu->mutex); +} + +static int motu_probe(struct fw_unit *unit, + const struct ieee1394_device_id *entry) +{ + struct snd_card *card; + struct snd_motu *motu; + int err; + + err = snd_card_new(&unit->device, -1, NULL, THIS_MODULE, + sizeof(*motu), &card); + if (err < 0) + return err; + + motu = card->private_data; + motu->card = card; + motu->unit = fw_unit_get(unit); + card->private_free = motu_card_free; + + mutex_init(&motu->mutex); + + name_card(motu); + + err = snd_card_register(card); + if (err < 0) + goto error; + + dev_set_drvdata(&unit->device, motu); + + return 0; +error: + snd_card_free(card); + return err; +} + +static void motu_remove(struct fw_unit *unit) +{ + struct snd_motu *motu = dev_get_drvdata(&unit->device); + + /* No need to wait for releasing card object in this context. */ + snd_card_free_when_closed(motu->card); +} + +static void motu_bus_update(struct fw_unit *unit) +{ + return; +} + +#define SND_MOTU_DEV_ENTRY(model, data) \ +{ \ + .match_flags = IEEE1394_MATCH_VENDOR_ID | \ + IEEE1394_MATCH_MODEL_ID | \ + IEEE1394_MATCH_SPECIFIER_ID, \ + .vendor_id = OUI_MOTU, \ + .model_id = model, \ + .specifier_id = OUI_MOTU, \ + .driver_data = (kernel_ulong_t)data, \ +} + +static const struct ieee1394_device_id motu_id_table[] = { + { } +}; +MODULE_DEVICE_TABLE(ieee1394, motu_id_table); + +static struct fw_driver motu_driver = { + .driver = { + .owner = THIS_MODULE, + .name = KBUILD_MODNAME, + .bus = &fw_bus_type, + }, + .probe = motu_probe, + .update = motu_bus_update, + .remove = motu_remove, + .id_table = motu_id_table, +}; + +static int __init alsa_motu_init(void) +{ + return driver_register(&motu_driver.driver); +} + +static void __exit alsa_motu_exit(void) +{ + driver_unregister(&motu_driver.driver); +} + +module_init(alsa_motu_init); +module_exit(alsa_motu_exit); diff --git a/sound/firewire/motu/motu.h b/sound/firewire/motu/motu.h new file mode 100644 index 0000000..f3d0b28 --- /dev/null +++ b/sound/firewire/motu/motu.h @@ -0,0 +1,29 @@ +/* + * motu.h - a part of driver for MOTU FireWire series + * + * Copyright (c) 2015-2017 Takashi Sakamoto o-takashi@sakamocchi.jp + * + * Licensed under the terms of the GNU General Public License, version 2. + */ + +#ifndef SOUND_FIREWIRE_MOTU_H_INCLUDED +#define SOUND_FIREWIRE_MOTU_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 <sound/control.h> +#include <sound/core.h> + +struct snd_motu { + struct snd_card *card; + struct fw_unit *unit; + struct mutex mutex; +}; + +#endif