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/*
* 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,
.is_controller = true,
},
{
.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,
.is_controller = false,
},
{
.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,
.is_controller = true,
},
};
static int check_name(struct snd_tscm *tscm)
{
struct fw_device *fw_dev = fw_parent_device(tscm->unit);
char vendor[8];
char model[8];
__u32 data;
/* Retrieve model name. */
data = be32_to_cpu(fw_dev->config_rom[28]);
memcpy(model, &data, 4);
data = be32_to_cpu(fw_dev->config_rom[29]);
memcpy(model + 4, &data, 4);
model[7] = '\0';
/* Retrieve vendor name. */
data = be32_to_cpu(fw_dev->config_rom[23]);
memcpy(vendor, &data, 4);
data = be32_to_cpu(fw_dev->config_rom[24]);
memcpy(vendor + 4, &data, 4);
vendor[7] = '\0';
strcpy(tscm->card->driver, "FW-TASCAM");
strcpy(tscm->card->shortname, model);
strcpy(tscm->card->mixername, model);
snprintf(tscm->card->longname, sizeof(tscm->card->longname),
"%s %s, GUID %08x%08x at %s, S%d", vendor, model,
cpu_to_be32(fw_dev->config_rom[3]),
cpu_to_be32(fw_dev->config_rom[4]),
dev_name(&tscm->unit->device), 100 << fw_dev->max_speed);
return 0;
}
static void tscm_card_free(struct snd_card *card)
{
struct snd_tscm *tscm = card->private_data;
snd_tscm_stream_destroy_duplex(tscm);
fw_unit_put(tscm->unit);
mutex_destroy(&tscm->mutex);
}
static int snd_tscm_probe(struct fw_unit *unit,
const struct ieee1394_device_id *entry)
{
struct snd_card *card;
struct snd_tscm *tscm;
int err;
/* create card */
err = snd_card_new(&unit->device, -1, NULL, THIS_MODULE,
sizeof(struct snd_tscm), &card);
if (err < 0)
return err;
card->private_free = tscm_card_free;
/* initialize myself */
tscm = card->private_data;
tscm->card = card;
tscm->unit = fw_unit_get(unit);
tscm->spec = (const struct snd_tscm_spec *)entry->driver_data;
mutex_init(&tscm->mutex);
spin_lock_init(&tscm->lock);
init_waitqueue_head(&tscm->hwdep_wait);
err = check_name(tscm);
if (err < 0)
goto error;
snd_tscm_proc_init(tscm);
err = snd_tscm_stream_init_duplex(tscm);
if (err < 0)
goto error;
err = snd_tscm_create_pcm_devices(tscm);
if (err < 0)
goto error;
err = snd_tscm_create_hwdep_device(tscm);
if (err < 0)
goto error;
err = snd_card_register(card);
if (err < 0)
goto error;
dev_set_drvdata(&unit->device, tscm);
return err;
error:
snd_card_free(card);
return err;
}
static void snd_tscm_update(struct fw_unit *unit)
{
struct snd_tscm *tscm = dev_get_drvdata(&unit->device);
mutex_lock(&tscm->mutex);
snd_tscm_stream_update_duplex(tscm);
mutex_unlock(&tscm->mutex);
}
static void snd_tscm_remove(struct fw_unit *unit)
{
struct snd_tscm *tscm = dev_get_drvdata(&unit->device);
/* No need to wait for releasing card object in this context. */
snd_card_free_when_closed(tscm->card);
}
static const struct ieee1394_device_id snd_tscm_id_table[] = {
/* FW-1082 */
{
.match_flags = IEEE1394_MATCH_VENDOR_ID |
IEEE1394_MATCH_SPECIFIER_ID |
IEEE1394_MATCH_VERSION,
.vendor_id = 0x00022e,
.specifier_id = 0x00022e,
.version = 0x800003,
.driver_data = (kernel_ulong_t)&model_specs[2],
},
/* FW-1884 */
{
.match_flags = IEEE1394_MATCH_VENDOR_ID |
IEEE1394_MATCH_SPECIFIER_ID |
IEEE1394_MATCH_VERSION,
.vendor_id = 0x00022e,
.specifier_id = 0x00022e,
.version = 0x800000,
.driver_data = (kernel_ulong_t)&model_specs[0],
},
/* FW-1804 mey be supported if IDs are clear. */
/* 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);
}
static void __exit snd_tscm_exit(void)
{
driver_unregister(&tscm_driver.driver);
}
module_init(snd_tscm_init);
module_exit(snd_tscm_exit);
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