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ALSA: firewire-motu: add support for Motu Traveler

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This commit adds support for MOTU Traveler, launched in 2005, discontinued
quite before. As a result, transmission of PCM frame and MIDI messages is
available via ALSA PCM and RawMIDI/Sequencer interfaces.

This model supports sampling transmission frequency up to 192.0 kHz, and
AES/EBU on XLR interface and ADAT on optical interface. Unlike
Motu 828MkII, Windows driver can switch fetching mode for DSP, like
mute/unmute feature.

Although this commit enables high sampling transmission frequency, actual
sound from this model is not good. As long as I tested, it's silence at
176.4 kHz, and it includes hissing noise at 192.0 kHz. In my opinion, as I
reported at 3526ce7f9ba7 ('ALSA: firewire-motu: add MOTU specific protocol
layer'), timestamping on source packet header (SPH) may not still be good
for this model as well.

$ python2 crpp < /sys/bus/firewire/devices/fw1/config_rom
               ROM header and bus information block
               -----------------------------------------------------------------
400  04106505  bus_info_length 4, crc_length 16, crc 25861
404  31333934  bus_name "1394"
408  20001000  irmc 0, cmc 0, isc 1, bmc 0, cyc_clk_acc 0, max_rec 1 (4)
40c  0001f200  company_id 0001f2     |
410  0001f32f  device_id 000001f32f  | EUI-64 0001f2000001f32f

               root directory
               -----------------------------------------------------------------
414  0004c65c  directory_length 4, crc 50780
418  030001f2  vendor
41c  0c0083c0  node capabilities per IEEE 1394
420  8d000006  --> eui-64 leaf at 438
424  d1000001  --> unit directory at 428

               unit directory at 428
               -----------------------------------------------------------------
428  00035955  directory_length 3, crc 22869
42c  120001f2  specifier id
430  13000009  version
434  17107800  model

               eui-64 leaf at 438
               -----------------------------------------------------------------
438  000206b2  leaf_length 2, crc 1714
43c  0001f200  company_id 0001f2     |
440  0001f32f  device_id 000001f32f  | EUI-64 0001f2000001f32f

Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Takashi Sakamoto 2018-06-18 21:07:55 +09:00 committed by Takashi Iwai
parent 191ef57683
commit 6c5e1ac0e1
3 changed files with 50 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

34
sound/firewire/motu/motu-protocol-v2.c
View File

@ -13,6 +13,8 @@
#define V2_CLOCK_RATE_SHIFT 3
#define V2_CLOCK_SRC_MASK 0x00000007
#define V2_CLOCK_SRC_SHIFT 0
#define V2_CLOCK_TRAVELER_FETCH_DISABLE 0x04000000
#define V2_CLOCK_TRAVELER_FETCH_ENABLE 0x03000000
#define V2_IN_OUT_CONF_OFFSET 0x0c04
#define V2_OPT_OUT_IFACE_MASK 0x00000c00
@ -66,6 +68,11 @@ static int v2_set_clock_rate(struct snd_motu *motu, unsigned int rate)
data &= ~V2_CLOCK_RATE_MASK;
data |= i << V2_CLOCK_RATE_SHIFT;
if (motu->spec == &snd_motu_spec_traveler) {
data &= ~V2_CLOCK_TRAVELER_FETCH_ENABLE;
data |= V2_CLOCK_TRAVELER_FETCH_DISABLE;
}
reg = cpu_to_be32(data);
return snd_motu_transaction_write(motu, V2_CLOCK_STATUS_OFFSET, &reg,
sizeof(reg));
@ -121,8 +128,31 @@ static int v2_get_clock_source(struct snd_motu *motu,
static int v2_switch_fetching_mode(struct snd_motu *motu, bool enable)
{
/* V2 protocol doesn't have this feature. */
return 0;
__be32 reg;
u32 data;
int err = 0;
if (motu->spec == &snd_motu_spec_traveler) {
err = snd_motu_transaction_read(motu, V2_CLOCK_STATUS_OFFSET,
&reg, sizeof(reg));
if (err < 0)
return err;
data = be32_to_cpu(reg);
data &= ~(V2_CLOCK_TRAVELER_FETCH_DISABLE |
V2_CLOCK_TRAVELER_FETCH_ENABLE);
if (enable)
data |= V2_CLOCK_TRAVELER_FETCH_ENABLE;
else
data |= V2_CLOCK_TRAVELER_FETCH_DISABLE;
reg = cpu_to_be32(data);
err = snd_motu_transaction_write(motu, V2_CLOCK_STATUS_OFFSET,
&reg, sizeof(reg));
}
return err;
}
static void calculate_fixed_part(struct snd_motu_packet_format *formats,

16
sound/firewire/motu/motu.c
View File

@ -209,6 +209,21 @@ static const struct snd_motu_spec motu_828mk2 = {
.analog_out_ports = 8,
};
const struct snd_motu_spec snd_motu_spec_traveler = {
.name = "Traveler",
.protocol = &snd_motu_protocol_v2,
.flags = SND_MOTU_SPEC_SUPPORT_CLOCK_X2 |
SND_MOTU_SPEC_SUPPORT_CLOCK_X4 |
SND_MOTU_SPEC_TX_RETURN_CHUNK |
SND_MOTU_SPEC_HAS_AESEBU_IFACE |
SND_MOTU_SPEC_HAS_OPT_IFACE_A |
SND_MOTU_SPEC_RX_MIDI_2ND_Q |
SND_MOTU_SPEC_TX_MIDI_2ND_Q,
.analog_in_ports = 8,
.analog_out_ports = 8,
};
static const struct snd_motu_spec motu_828mk3 = {
.name = "828mk3",
.protocol = &snd_motu_protocol_v3,
@ -253,6 +268,7 @@ static const struct snd_motu_spec motu_audio_express = {
static const struct ieee1394_device_id motu_id_table[] = {
SND_MOTU_DEV_ENTRY(0x101800, &motu_828mk2),
SND_MOTU_DEV_ENTRY(0x107800, &snd_motu_spec_traveler),
SND_MOTU_DEV_ENTRY(0x106800, &motu_828mk3), /* FireWire only. */
SND_MOTU_DEV_ENTRY(0x100800, &motu_828mk3), /* Hybrid. */
SND_MOTU_DEV_ENTRY(0x104800, &motu_audio_express),

2
sound/firewire/motu/motu.h
View File

@ -129,6 +129,8 @@ struct snd_motu_spec {
extern const struct snd_motu_protocol snd_motu_protocol_v2;
extern const struct snd_motu_protocol snd_motu_protocol_v3;
extern const struct snd_motu_spec snd_motu_spec_traveler;
int amdtp_motu_init(struct amdtp_stream *s, struct fw_unit *unit,
enum amdtp_stream_direction dir,
const struct snd_motu_protocol *const protocol);