Release 4.7 sound/firewire/tascam/tascam.c
/*
* tascam.c - a part of driver for TASCAM FireWire series
*
* Copyright (c) 2015 Takashi Sakamoto
*
* Licensed under the terms of the GNU General Public License, version 2.
*/
#include "tascam.h"
MODULE_DESCRIPTION("TASCAM FireWire series Driver");
MODULE_AUTHOR("Takashi Sakamoto <o-takashi@sakamocchi.jp>");
MODULE_LICENSE("GPL v2");
static struct snd_tscm_spec model_specs[] = {
{
.name = "FW-1884",
.has_adat = true,
.has_spdif = true,
.pcm_capture_analog_channels = 8,
.pcm_playback_analog_channels = 8,
.midi_capture_ports = 4,
.midi_playback_ports = 4,
},
{
.name = "FW-1082",
.has_adat = false,
.has_spdif = true,
.pcm_capture_analog_channels = 8,
.pcm_playback_analog_channels = 2,
.midi_capture_ports = 2,
.midi_playback_ports = 2,
},
{
.name = "FW-1804",
.has_adat = true,
.has_spdif = true,
.pcm_capture_analog_channels = 8,
.pcm_playback_analog_channels = 2,
.midi_capture_ports = 2,
.midi_playback_ports = 4,
},
};
static int identify_model(struct snd_tscm *tscm)
{
struct fw_device *fw_dev = fw_parent_device(tscm->unit);
const u32 *config_rom = fw_dev->config_rom;
char model[9];
unsigned int i;
u8 c;
if (fw_dev->config_rom_length < 30) {
dev_err(&tscm->unit->device,
"Configuration ROM is too short.\n");
return -ENODEV;
}
/* Pick up model name from certain addresses. */
for (i = 0; i < 8; i++) {
c = config_rom[28 + i / 4] >> (24 - 8 * (i % 4));
if (c == '\0')
break;
model[i] = c;
}
model[i] = '\0';
for (i = 0; i < ARRAY_SIZE(model_specs); i++) {
if (strcmp(model, model_specs[i].name) == 0) {
tscm->spec = &model_specs[i];
break;
}
}
if (tscm->spec == NULL)
return -ENODEV;
strcpy(tscm->card->driver, "FW-TASCAM");
strcpy(tscm->card->shortname, model);
strcpy(tscm->card->mixername, model);
snprintf(tscm->card->longname, sizeof(tscm->card->longname),
"TASCAM %s, GUID %08x%08x at %s, S%d", model,
fw_dev->config_rom[3], fw_dev->config_rom[4],
dev_name(&tscm->unit->device), 100 << fw_dev->max_speed);
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| takashi sakamoto | takashi sakamoto | 277 | 99.64% | 2 | 66.67% |
| dan carpenter | dan carpenter | 1 | 0.36% | 1 | 33.33% |
| Total | 278 | 100.00% | 3 | 100.00% |
static void tscm_free(struct snd_tscm *tscm)
{
snd_tscm_transaction_unregister(tscm);
snd_tscm_stream_destroy_duplex(tscm);
fw_unit_put(tscm->unit);
mutex_destroy(&tscm->mutex);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| takashi sakamoto | takashi sakamoto | 36 | 100.00% | 4 | 100.00% |
| Total | 36 | 100.00% | 4 | 100.00% |
static void tscm_card_free(struct snd_card *card)
{
tscm_free(card->private_data);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| takashi sakamoto | takashi sakamoto | 18 | 100.00% | 2 | 100.00% |
| Total | 18 | 100.00% | 2 | 100.00% |
static void do_registration(struct work_struct *work)
{
struct snd_tscm *tscm = container_of(work, struct snd_tscm, dwork.work);
int err;
err = snd_card_new(&tscm->unit->device, -1, NULL, THIS_MODULE, 0,
&tscm->card);
if (err < 0)
return;
err = identify_model(tscm);
if (err < 0)
goto error;
err = snd_tscm_transaction_register(tscm);
if (err < 0)
goto error;
err = snd_tscm_stream_init_duplex(tscm);
if (err < 0)
goto error;
snd_tscm_proc_init(tscm);
err = snd_tscm_create_pcm_devices(tscm);
if (err < 0)
goto error;
err = snd_tscm_create_midi_devices(tscm);
if (err < 0)
goto error;
err = snd_tscm_create_hwdep_device(tscm);
if (err < 0)
goto error;
err = snd_card_register(tscm->card);
if (err < 0)
goto error;
/*
* After registered, tscm instance can be released corresponding to
* releasing the sound card instance.
*/
tscm->card->private_free = tscm_card_free;
tscm->card->private_data = tscm;
tscm->registered = true;
return;
error:
snd_tscm_transaction_unregister(tscm);
snd_tscm_stream_destroy_duplex(tscm);
snd_card_free(tscm->card);
dev_info(&tscm->unit->device,
"Sound card registration failed: %d\n", err);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| takashi sakamoto | takashi sakamoto | 240 | 100.00% | 8 | 100.00% |
| Total | 240 | 100.00% | 8 | 100.00% |
static int snd_tscm_probe(struct fw_unit *unit,
const struct ieee1394_device_id *entry)
{
struct snd_tscm *tscm;
/* Allocate this independent of sound card instance. */
tscm = kzalloc(sizeof(struct snd_tscm), GFP_KERNEL);
if (tscm == NULL)
return -ENOMEM;
/* initialize myself */
tscm->unit = fw_unit_get(unit);
dev_set_drvdata(&unit->device, tscm);
mutex_init(&tscm->mutex);
spin_lock_init(&tscm->lock);
init_waitqueue_head(&tscm->hwdep_wait);
/* Allocate and register this sound card later. */
INIT_DEFERRABLE_WORK(&tscm->dwork, do_registration);
snd_fw_schedule_registration(unit, &tscm->dwork);
return 0;
}
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| Person | Tokens | Prop | Commits | CommitProp |
| takashi sakamoto | takashi sakamoto | 114 | 100.00% | 2 | 100.00% |
| Total | 114 | 100.00% | 2 | 100.00% |
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);
}
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| takashi sakamoto | takashi sakamoto | 77 | 100.00% | 4 | 100.00% |
| Total | 77 | 100.00% | 4 | 100.00% |
static void snd_tscm_remove(struct fw_unit *unit)
{
struct snd_tscm *tscm = dev_get_drvdata(&unit->device);
/*
* Confirm to stop the work for registration before the sound card is
* going to be released. The work is not scheduled again because bus
* reset handler is not called anymore.
*/
cancel_delayed_work_sync(&tscm->dwork);
if (tscm->registered) {
/* No need to wait for releasing card object in this context. */
snd_card_free_when_closed(tscm->card);
} else {
/* Don't forget this case. */
tscm_free(tscm);
}
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| takashi sakamoto | takashi sakamoto | 58 | 100.00% | 2 | 100.00% |
| Total | 58 | 100.00% | 2 | 100.00% |
static const struct ieee1394_device_id snd_tscm_id_table[] = {
{
.match_flags = IEEE1394_MATCH_VENDOR_ID |
IEEE1394_MATCH_SPECIFIER_ID,
.vendor_id = 0x00022e,
.specifier_id = 0x00022e,
},
/* FE-08 requires reverse-engineering because it just has faders. */
{}
};
MODULE_DEVICE_TABLE(ieee1394, snd_tscm_id_table);
static struct fw_driver tscm_driver = {
.driver = {
.owner = THIS_MODULE,
.name = "snd-firewire-tascam",
.bus = &fw_bus_type,
},
.probe = snd_tscm_probe,
.update = snd_tscm_update,
.remove = snd_tscm_remove,
.id_table = snd_tscm_id_table,
};
static int __init snd_tscm_init(void)
{
return driver_register(&tscm_driver.driver);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| takashi sakamoto | takashi sakamoto | 18 | 100.00% | 1 | 100.00% |
| Total | 18 | 100.00% | 1 | 100.00% |
static void __exit snd_tscm_exit(void)
{
driver_unregister(&tscm_driver.driver);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| takashi sakamoto | takashi sakamoto | 17 | 100.00% | 1 | 100.00% |
| Total | 17 | 100.00% | 1 | 100.00% |
module_init(snd_tscm_init);
module_exit(snd_tscm_exit);
Overall Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| takashi sakamoto | takashi sakamoto | 1089 | 99.91% | 10 | 90.91% |
| dan carpenter | dan carpenter | 1 | 0.09% | 1 | 9.09% |
| Total | 1090 | 100.00% | 11 | 100.00% |
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