static int oxfw_probe(struct fw_unit *unit,
const struct ieee1394_device_id *entry)
{
struct snd_oxfw *oxfw;
if (entry->vendor_id == VENDOR_LOUD && !detect_loud_models(unit))
return -ENODEV;
/* Allocate this independent of sound card instance. */
oxfw = kzalloc(sizeof(struct snd_oxfw), GFP_KERNEL);
if (oxfw == NULL)
return -ENOMEM;
oxfw->entry = entry;
oxfw->unit = fw_unit_get(unit);
dev_set_drvdata(&unit->device, oxfw);
mutex_init(&oxfw->mutex);
spin_lock_init(&oxfw->lock);
init_waitqueue_head(&oxfw->hwdep_wait);
/* Allocate and register this sound card later. */
INIT_DEFERRABLE_WORK(&oxfw->dwork, do_registration);
snd_fw_schedule_registration(unit, &oxfw->dwork);
return 0;
}
static void motu_bus_update(struct fw_unit *unit)
{
struct snd_motu *motu = dev_get_drvdata(&unit->device);
/* Postpone a workqueue for deferred registration. */
if (!motu->registered)
snd_fw_schedule_registration(unit, &motu->dwork);
/* The handler address register becomes initialized. */
snd_motu_transaction_reregister(motu);
}
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);
}
/*
* This driver doesn't update streams in bus reset handler.
*
* DM1000/ DM1100/DM1500 chipsets with BeBoB firmware transfer packets with
* discontinued counter at bus reset. This discontinuity is immediately
* detected in packet streaming layer, then it sets XRUN to PCM substream.
*
* ALSA PCM applications can know the XRUN by getting -EPIPE from PCM operation.
* Then, they can recover the PCM substream by executing ioctl(2) with
* SNDRV_PCM_IOCTL_PREPARE. 'struct snd_pcm_ops.prepare' is called and drivers
* restart packet streaming.
*
* The above processing may be executed before this bus-reset handler is
* executed. When this handler updates streams with current isochronous
* channels, the streams already have the current ones.
*/
static void
bebob_update(struct fw_unit *unit)
{
struct snd_bebob *bebob = dev_get_drvdata(&unit->device);
if (bebob == NULL)
return;
/* Postpone a workqueue for deferred registration. */
if (!bebob->registered)
snd_fw_schedule_registration(unit, &bebob->dwork);
else
fcp_bus_reset(bebob->unit);
}
static void snd_tscm_update(struct fw_unit *unit)
{
struct snd_tscm *tscm = dev_get_drvdata(&unit->device);
/* Postpone a workqueue for deferred registration. */
if (!tscm->registered)
snd_fw_schedule_registration(unit, &tscm->dwork);
snd_tscm_transaction_reregister(tscm);
/*
* After registration, userspace can start packet streaming, then this
* code block works fine.
*/
if (tscm->registered) {
mutex_lock(&tscm->mutex);
snd_tscm_stream_update_duplex(tscm);
mutex_unlock(&tscm->mutex);
}
}
static void oxfw_bus_reset(struct fw_unit *unit)
{
struct snd_oxfw *oxfw = dev_get_drvdata(&unit->device);
if (!oxfw->registered)
snd_fw_schedule_registration(unit, &oxfw->dwork);
fcp_bus_reset(oxfw->unit);
if (oxfw->registered) {
mutex_lock(&oxfw->mutex);
snd_oxfw_stream_update_simplex(oxfw, &oxfw->rx_stream);
if (oxfw->has_output)
snd_oxfw_stream_update_simplex(oxfw, &oxfw->tx_stream);
mutex_unlock(&oxfw->mutex);
if (oxfw->entry->vendor_id == OUI_STANTON)
snd_oxfw_scs1x_update(oxfw);
}
}
static int snd_ff_probe(struct fw_unit *unit,
const struct ieee1394_device_id *entry)
{
struct snd_ff *ff;
ff = devm_kzalloc(&unit->device, sizeof(struct snd_ff), GFP_KERNEL);
if (!ff)
return -ENOMEM;
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 int motu_probe(struct fw_unit *unit,
const struct ieee1394_device_id *entry)
{
struct snd_motu *motu;
/* Allocate this independently of sound card instance. */
motu = devm_kzalloc(&unit->device, sizeof(struct snd_motu), GFP_KERNEL);
if (!motu)
return -ENOMEM;
motu->unit = fw_unit_get(unit);
dev_set_drvdata(&unit->device, motu);
motu->spec = (const struct snd_motu_spec *)entry->driver_data;
mutex_init(&motu->mutex);
spin_lock_init(&motu->lock);
init_waitqueue_head(&motu->hwdep_wait);
/* Allocate and register this sound card later. */
INIT_DEFERRABLE_WORK(&motu->dwork, do_registration);
snd_fw_schedule_registration(unit, &motu->dwork);
return 0;
}
static int snd_dg00x_probe(struct fw_unit *unit,
const struct ieee1394_device_id *entry)
{
struct snd_dg00x *dg00x;
/* Allocate this independent of sound card instance. */
dg00x = kzalloc(sizeof(struct snd_dg00x), GFP_KERNEL);
if (dg00x == NULL)
return -ENOMEM;
dg00x->unit = fw_unit_get(unit);
dev_set_drvdata(&unit->device, dg00x);
mutex_init(&dg00x->mutex);
spin_lock_init(&dg00x->lock);
init_waitqueue_head(&dg00x->hwdep_wait);
/* Allocate and register this sound card later. */
INIT_DEFERRABLE_WORK(&dg00x->dwork, do_registration);
snd_fw_schedule_registration(unit, &dg00x->dwork);
return 0;
}
static int
bebob_probe(struct fw_unit *unit, const struct ieee1394_device_id *entry)
{
struct snd_bebob *bebob;
const struct snd_bebob_spec *spec;
if (entry->vendor_id == VEN_FOCUSRITE &&
entry->model_id == MODEL_FOCUSRITE_SAFFIRE_BOTH)
spec = get_saffire_spec(unit);
else if (entry->vendor_id == VEN_MAUDIO1 &&
entry->model_id == MODEL_MAUDIO_AUDIOPHILE_BOTH &&
!check_audiophile_booted(unit))
spec = NULL;
else
spec = (const struct snd_bebob_spec *)entry->driver_data;
if (spec == NULL) {
if (entry->vendor_id == VEN_MAUDIO1 ||
entry->vendor_id == VEN_MAUDIO2)
return snd_bebob_maudio_load_firmware(unit);
else
return -ENODEV;
}
/* Allocate this independent of sound card instance. */
bebob = kzalloc(sizeof(struct snd_bebob), GFP_KERNEL);
if (bebob == NULL)
return -ENOMEM;
bebob->unit = fw_unit_get(unit);
bebob->entry = entry;
bebob->spec = spec;
dev_set_drvdata(&unit->device, bebob);
mutex_init(&bebob->mutex);
spin_lock_init(&bebob->lock);
init_waitqueue_head(&bebob->hwdep_wait);
/* Allocate and register this sound card later. */
INIT_DEFERRABLE_WORK(&bebob->dwork, do_registration);
if (entry->vendor_id != VEN_MAUDIO1 ||
(entry->model_id != MODEL_MAUDIO_FW1814 &&
entry->model_id != MODEL_MAUDIO_PROJECTMIX)) {
snd_fw_schedule_registration(unit, &bebob->dwork);
} else {
/*
* This is a workaround. This bus reset seems to have an effect
* to make devices correctly handling transactions. Without
* this, the devices have gap_count mismatch. This causes much
* failure of transaction.
*
* Just after registration, user-land application receive
* signals from dbus and starts I/Os. To avoid I/Os till the
* future bus reset, registration is done in next update().
*/
fw_schedule_bus_reset(fw_parent_device(bebob->unit)->card,
false, true);
}
return 0;
}