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/*
* oxfw.c - a part of driver for OXFW970/971 based devices
*
* Copyright (c) Clemens Ladisch <clemens@ladisch.de>
* Licensed under the terms of the GNU General Public License, version 2.
*/
#include "oxfw.h"
#define OXFORD_FIRMWARE_ID_ADDRESS (CSR_REGISTER_BASE + 0x50000)
/* 0x970?vvvv or 0x971?vvvv, where vvvv = firmware version */
#define OXFORD_HARDWARE_ID_ADDRESS (CSR_REGISTER_BASE + 0x90020)
#define OXFORD_HARDWARE_ID_OXFW970 0x39443841
#define OXFORD_HARDWARE_ID_OXFW971 0x39373100
#define VENDOR_GRIFFIN 0x001292
#define VENDOR_LACIE 0x00d04b
#define SPECIFIER_1394TA 0x00a02d
#define VERSION_AVC 0x010001
MODULE_DESCRIPTION("Oxford Semiconductor FW970/971 driver");
MODULE_AUTHOR("Clemens Ladisch <clemens@ladisch.de>");
MODULE_LICENSE("GPL v2");
MODULE_ALIAS("snd-firewire-speakers");
static u32 oxfw_read_firmware_version(struct fw_unit *unit)
{
__be32 data;
int err;
err = snd_fw_transaction(unit, TCODE_READ_QUADLET_REQUEST,
OXFORD_FIRMWARE_ID_ADDRESS, &data, 4, 0);
return err >= 0 ? be32_to_cpu(data) : 0;
}
static void oxfw_card_free(struct snd_card *card)
{
struct snd_oxfw *oxfw = card->private_data;
mutex_destroy(&oxfw->mutex);
}
static int oxfw_probe(struct fw_unit *unit,
const struct ieee1394_device_id *id)
{
struct fw_device *fw_dev = fw_parent_device(unit);
struct snd_card *card;
struct snd_oxfw *oxfw;
u32 firmware;
int err;
err = snd_card_new(&unit->device, -1, NULL, THIS_MODULE,
sizeof(*oxfw), &card);
if (err < 0)
return err;
card->private_free = oxfw_card_free;
oxfw = card->private_data;
oxfw->card = card;
mutex_init(&oxfw->mutex);
oxfw->unit = unit;
oxfw->device_info = (const struct device_info *)id->driver_data;
strcpy(card->driver, oxfw->device_info->driver_name);
strcpy(card->shortname, oxfw->device_info->short_name);
firmware = oxfw_read_firmware_version(unit);
snprintf(card->longname, sizeof(card->longname),
"%s (OXFW%x %04x), GUID %08x%08x at %s, S%d",
oxfw->device_info->long_name,
firmware >> 20, firmware & 0xffff,
fw_dev->config_rom[3], fw_dev->config_rom[4],
dev_name(&unit->device), 100 << fw_dev->max_speed);
strcpy(card->mixername, "OXFW");
err = snd_oxfw_create_pcm(oxfw);
if (err < 0)
goto error;
err = snd_oxfw_create_mixer(oxfw);
if (err < 0)
goto error;
err = snd_oxfw_stream_init_simplex(oxfw);
if (err < 0)
goto error;
err = snd_card_register(card);
if (err < 0) {
snd_oxfw_stream_destroy_simplex(oxfw);
goto error;
}
dev_set_drvdata(&unit->device, oxfw);
return 0;
error:
snd_card_free(card);
return err;
}
static void oxfw_bus_reset(struct fw_unit *unit)
{
struct snd_oxfw *oxfw = dev_get_drvdata(&unit->device);
fcp_bus_reset(oxfw->unit);
mutex_lock(&oxfw->mutex);
snd_oxfw_stream_update_simplex(oxfw);
mutex_unlock(&oxfw->mutex);
}
static void oxfw_remove(struct fw_unit *unit)
{
struct snd_oxfw *oxfw = dev_get_drvdata(&unit->device);
snd_card_disconnect(oxfw->card);
snd_oxfw_stream_destroy_simplex(oxfw);
snd_card_free_when_closed(oxfw->card);
}
static const struct device_info griffin_firewave = {
.driver_name = "FireWave",
.short_name = "FireWave",
.long_name = "Griffin FireWave Surround",
.pcm_constraints = firewave_constraints,
.mixer_channels = 6,
.mute_fb_id = 0x01,
.volume_fb_id = 0x02,
};
static const struct device_info lacie_speakers = {
.driver_name = "FWSpeakers",
.short_name = "FireWire Speakers",
.long_name = "LaCie FireWire Speakers",
.pcm_constraints = lacie_speakers_constraints,
.mixer_channels = 1,
.mute_fb_id = 0x01,
.volume_fb_id = 0x01,
};
static const struct ieee1394_device_id oxfw_id_table[] = {
{
.match_flags = IEEE1394_MATCH_VENDOR_ID |
IEEE1394_MATCH_MODEL_ID |
IEEE1394_MATCH_SPECIFIER_ID |
IEEE1394_MATCH_VERSION,
.vendor_id = VENDOR_GRIFFIN,
.model_id = 0x00f970,
.specifier_id = SPECIFIER_1394TA,
.version = VERSION_AVC,
.driver_data = (kernel_ulong_t)&griffin_firewave,
},
{
.match_flags = IEEE1394_MATCH_VENDOR_ID |
IEEE1394_MATCH_MODEL_ID |
IEEE1394_MATCH_SPECIFIER_ID |
IEEE1394_MATCH_VERSION,
.vendor_id = VENDOR_LACIE,
.model_id = 0x00f970,
.specifier_id = SPECIFIER_1394TA,
.version = VERSION_AVC,
.driver_data = (kernel_ulong_t)&lacie_speakers,
},
{ }
};
MODULE_DEVICE_TABLE(ieee1394, oxfw_id_table);
static struct fw_driver oxfw_driver = {
.driver = {
.owner = THIS_MODULE,
.name = KBUILD_MODNAME,
.bus = &fw_bus_type,
},
.probe = oxfw_probe,
.update = oxfw_bus_reset,
.remove = oxfw_remove,
.id_table = oxfw_id_table,
};
static int __init snd_oxfw_init(void)
{
return driver_register(&oxfw_driver.driver);
}
static void __exit snd_oxfw_exit(void)
{
driver_unregister(&oxfw_driver.driver);
}
module_init(snd_oxfw_init);
module_exit(snd_oxfw_exit);
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