322 lines
8.3 KiB
C
322 lines
8.3 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
|
|
/*
|
|
* motu-protocol-v2.c - a part of driver for MOTU FireWire series
|
|
*
|
|
* Copyright (c) 2015-2017 Takashi Sakamoto <o-takashi@sakamocchi.jp>
|
|
*/
|
|
|
|
#include "motu.h"
|
|
|
|
#define V2_CLOCK_STATUS_OFFSET 0x0b14
|
|
#define V2_CLOCK_RATE_MASK 0x00000038
|
|
#define V2_CLOCK_RATE_SHIFT 3
|
|
#define V2_CLOCK_SRC_MASK 0x00000007
|
|
#define V2_CLOCK_SRC_SHIFT 0
|
|
#define V2_CLOCK_SRC_AESEBU_ON_XLR 0x07 // In Traveler.
|
|
#define V2_CLOCK_SRC_ADAT_ON_DSUB 0x05
|
|
#define V2_CLOCK_SRC_WORD_ON_BNC 0x04
|
|
#define V2_CLOCK_SRC_SPH 0x03
|
|
#define V2_CLOCK_SRC_SPDIF 0x02 // on either coaxial or optical. AES/EBU in 896HD.
|
|
#define V2_CLOCK_SRC_ADAT_ON_OPT 0x01
|
|
#define V2_CLOCK_SRC_INTERNAL 0x00
|
|
#define V2_CLOCK_FETCH_ENABLE 0x02000000
|
|
#define V2_CLOCK_MODEL_SPECIFIC 0x04000000
|
|
|
|
#define V2_IN_OUT_CONF_OFFSET 0x0c04
|
|
#define V2_OPT_OUT_IFACE_MASK 0x00000c00
|
|
#define V2_OPT_OUT_IFACE_SHIFT 10
|
|
#define V2_OPT_IN_IFACE_MASK 0x00000300
|
|
#define V2_OPT_IN_IFACE_SHIFT 8
|
|
#define V2_OPT_IFACE_MODE_NONE 0
|
|
#define V2_OPT_IFACE_MODE_ADAT 1
|
|
#define V2_OPT_IFACE_MODE_SPDIF 2
|
|
|
|
static int get_clock_rate(u32 data, unsigned int *rate)
|
|
{
|
|
unsigned int index = (data & V2_CLOCK_RATE_MASK) >> V2_CLOCK_RATE_SHIFT;
|
|
if (index >= ARRAY_SIZE(snd_motu_clock_rates))
|
|
return -EIO;
|
|
|
|
*rate = snd_motu_clock_rates[index];
|
|
|
|
return 0;
|
|
}
|
|
|
|
int snd_motu_protocol_v2_get_clock_rate(struct snd_motu *motu,
|
|
unsigned int *rate)
|
|
{
|
|
__be32 reg;
|
|
int err;
|
|
|
|
err = snd_motu_transaction_read(motu, V2_CLOCK_STATUS_OFFSET, ®,
|
|
sizeof(reg));
|
|
if (err < 0)
|
|
return err;
|
|
|
|
return get_clock_rate(be32_to_cpu(reg), rate);
|
|
}
|
|
|
|
int snd_motu_protocol_v2_set_clock_rate(struct snd_motu *motu,
|
|
unsigned int rate)
|
|
{
|
|
__be32 reg;
|
|
u32 data;
|
|
int i;
|
|
int err;
|
|
|
|
for (i = 0; i < ARRAY_SIZE(snd_motu_clock_rates); ++i) {
|
|
if (snd_motu_clock_rates[i] == rate)
|
|
break;
|
|
}
|
|
if (i == ARRAY_SIZE(snd_motu_clock_rates))
|
|
return -EINVAL;
|
|
|
|
err = snd_motu_transaction_read(motu, V2_CLOCK_STATUS_OFFSET, ®,
|
|
sizeof(reg));
|
|
if (err < 0)
|
|
return err;
|
|
data = be32_to_cpu(reg);
|
|
|
|
data &= ~V2_CLOCK_RATE_MASK;
|
|
data |= i << V2_CLOCK_RATE_SHIFT;
|
|
|
|
reg = cpu_to_be32(data);
|
|
return snd_motu_transaction_write(motu, V2_CLOCK_STATUS_OFFSET, ®,
|
|
sizeof(reg));
|
|
}
|
|
|
|
static int get_clock_source(struct snd_motu *motu, u32 data,
|
|
enum snd_motu_clock_source *src)
|
|
{
|
|
switch (data & V2_CLOCK_SRC_MASK) {
|
|
case V2_CLOCK_SRC_INTERNAL:
|
|
*src = SND_MOTU_CLOCK_SOURCE_INTERNAL;
|
|
break;
|
|
case V2_CLOCK_SRC_ADAT_ON_OPT:
|
|
*src = SND_MOTU_CLOCK_SOURCE_ADAT_ON_OPT;
|
|
break;
|
|
case V2_CLOCK_SRC_SPDIF:
|
|
{
|
|
bool support_iec60958_on_opt = (motu->spec == &snd_motu_spec_828mk2 ||
|
|
motu->spec == &snd_motu_spec_traveler);
|
|
|
|
if (motu->spec == &snd_motu_spec_896hd) {
|
|
*src = SND_MOTU_CLOCK_SOURCE_AESEBU_ON_XLR;
|
|
} else if (!support_iec60958_on_opt) {
|
|
*src = SND_MOTU_CLOCK_SOURCE_SPDIF_ON_COAX;
|
|
} else {
|
|
__be32 reg;
|
|
|
|
// To check the configuration of optical interface.
|
|
int err = snd_motu_transaction_read(motu, V2_IN_OUT_CONF_OFFSET, ®,
|
|
sizeof(reg));
|
|
if (err < 0)
|
|
return err;
|
|
|
|
if (((data & V2_OPT_IN_IFACE_MASK) >> V2_OPT_IN_IFACE_SHIFT) ==
|
|
V2_OPT_IFACE_MODE_SPDIF)
|
|
*src = SND_MOTU_CLOCK_SOURCE_SPDIF_ON_OPT;
|
|
else
|
|
*src = SND_MOTU_CLOCK_SOURCE_SPDIF_ON_COAX;
|
|
}
|
|
break;
|
|
}
|
|
case V2_CLOCK_SRC_SPH:
|
|
*src = SND_MOTU_CLOCK_SOURCE_SPH;
|
|
break;
|
|
case V2_CLOCK_SRC_WORD_ON_BNC:
|
|
*src = SND_MOTU_CLOCK_SOURCE_WORD_ON_BNC;
|
|
break;
|
|
case V2_CLOCK_SRC_ADAT_ON_DSUB:
|
|
*src = SND_MOTU_CLOCK_SOURCE_ADAT_ON_DSUB;
|
|
break;
|
|
case V2_CLOCK_SRC_AESEBU_ON_XLR:
|
|
// For Traveler.
|
|
*src = SND_MOTU_CLOCK_SOURCE_AESEBU_ON_XLR;
|
|
break;
|
|
default:
|
|
*src = SND_MOTU_CLOCK_SOURCE_UNKNOWN;
|
|
break;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
int snd_motu_protocol_v2_get_clock_source(struct snd_motu *motu,
|
|
enum snd_motu_clock_source *src)
|
|
{
|
|
__be32 reg;
|
|
int err;
|
|
|
|
err = snd_motu_transaction_read(motu, V2_CLOCK_STATUS_OFFSET, ®,
|
|
sizeof(reg));
|
|
if (err < 0)
|
|
return err;
|
|
|
|
return get_clock_source(motu, be32_to_cpu(reg), src);
|
|
}
|
|
|
|
// Expected for Traveler, which implements Altera Cyclone EP1C3.
|
|
static int switch_fetching_mode_cyclone(struct snd_motu *motu, u32 *data,
|
|
bool enable)
|
|
{
|
|
*data |= V2_CLOCK_MODEL_SPECIFIC;
|
|
|
|
return 0;
|
|
}
|
|
|
|
// For UltraLite and 8pre, which implements Xilinx Spartan XC3S200.
|
|
static int switch_fetching_mode_spartan(struct snd_motu *motu, u32 *data,
|
|
bool enable)
|
|
{
|
|
unsigned int rate;
|
|
enum snd_motu_clock_source src;
|
|
int err;
|
|
|
|
err = get_clock_source(motu, *data, &src);
|
|
if (err < 0)
|
|
return err;
|
|
|
|
err = get_clock_rate(*data, &rate);
|
|
if (err < 0)
|
|
return err;
|
|
|
|
if (src == SND_MOTU_CLOCK_SOURCE_SPH && rate > 48000)
|
|
*data |= V2_CLOCK_MODEL_SPECIFIC;
|
|
|
|
return 0;
|
|
}
|
|
|
|
int snd_motu_protocol_v2_switch_fetching_mode(struct snd_motu *motu,
|
|
bool enable)
|
|
{
|
|
if (motu->spec == &snd_motu_spec_828mk2) {
|
|
// 828mkII implements Altera ACEX 1K EP1K30. Nothing to do.
|
|
return 0;
|
|
} else if (motu->spec == &snd_motu_spec_896hd) {
|
|
// 896HD implements Altera Cyclone EP1C3 but nothing to do.
|
|
return 0;
|
|
} else {
|
|
__be32 reg;
|
|
u32 data;
|
|
int err;
|
|
|
|
err = snd_motu_transaction_read(motu, V2_CLOCK_STATUS_OFFSET,
|
|
®, sizeof(reg));
|
|
if (err < 0)
|
|
return err;
|
|
data = be32_to_cpu(reg);
|
|
|
|
data &= ~(V2_CLOCK_FETCH_ENABLE | V2_CLOCK_MODEL_SPECIFIC);
|
|
if (enable)
|
|
data |= V2_CLOCK_FETCH_ENABLE;
|
|
|
|
if (motu->spec == &snd_motu_spec_traveler)
|
|
err = switch_fetching_mode_cyclone(motu, &data, enable);
|
|
else
|
|
err = switch_fetching_mode_spartan(motu, &data, enable);
|
|
if (err < 0)
|
|
return err;
|
|
|
|
reg = cpu_to_be32(data);
|
|
return snd_motu_transaction_write(motu, V2_CLOCK_STATUS_OFFSET,
|
|
®, sizeof(reg));
|
|
}
|
|
}
|
|
|
|
int snd_motu_protocol_v2_cache_packet_formats(struct snd_motu *motu)
|
|
{
|
|
bool has_two_opt_ifaces = (motu->spec == &snd_motu_spec_8pre);
|
|
__be32 reg;
|
|
u32 data;
|
|
int err;
|
|
|
|
motu->tx_packet_formats.pcm_byte_offset = 10;
|
|
motu->rx_packet_formats.pcm_byte_offset = 10;
|
|
|
|
motu->tx_packet_formats.msg_chunks = 2;
|
|
motu->rx_packet_formats.msg_chunks = 2;
|
|
|
|
err = snd_motu_transaction_read(motu, V2_IN_OUT_CONF_OFFSET, ®,
|
|
sizeof(reg));
|
|
if (err < 0)
|
|
return err;
|
|
data = be32_to_cpu(reg);
|
|
|
|
memcpy(motu->tx_packet_formats.pcm_chunks,
|
|
motu->spec->tx_fixed_pcm_chunks,
|
|
sizeof(motu->tx_packet_formats.pcm_chunks));
|
|
memcpy(motu->rx_packet_formats.pcm_chunks,
|
|
motu->spec->rx_fixed_pcm_chunks,
|
|
sizeof(motu->rx_packet_formats.pcm_chunks));
|
|
|
|
if (((data & V2_OPT_IN_IFACE_MASK) >> V2_OPT_IN_IFACE_SHIFT) == V2_OPT_IFACE_MODE_ADAT) {
|
|
motu->tx_packet_formats.pcm_chunks[0] += 8;
|
|
|
|
if (!has_two_opt_ifaces)
|
|
motu->tx_packet_formats.pcm_chunks[1] += 4;
|
|
else
|
|
motu->tx_packet_formats.pcm_chunks[1] += 8;
|
|
}
|
|
|
|
if (((data & V2_OPT_OUT_IFACE_MASK) >> V2_OPT_OUT_IFACE_SHIFT) == V2_OPT_IFACE_MODE_ADAT) {
|
|
motu->rx_packet_formats.pcm_chunks[0] += 8;
|
|
|
|
if (!has_two_opt_ifaces)
|
|
motu->rx_packet_formats.pcm_chunks[1] += 4;
|
|
else
|
|
motu->rx_packet_formats.pcm_chunks[1] += 8;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
const struct snd_motu_spec snd_motu_spec_828mk2 = {
|
|
.name = "828mk2",
|
|
.protocol_version = SND_MOTU_PROTOCOL_V2,
|
|
.flags = SND_MOTU_SPEC_RX_MIDI_2ND_Q |
|
|
SND_MOTU_SPEC_TX_MIDI_2ND_Q |
|
|
SND_MOTU_SPEC_REGISTER_DSP,
|
|
.tx_fixed_pcm_chunks = {14, 14, 0},
|
|
.rx_fixed_pcm_chunks = {14, 14, 0},
|
|
};
|
|
|
|
const struct snd_motu_spec snd_motu_spec_896hd = {
|
|
.name = "896HD",
|
|
.protocol_version = SND_MOTU_PROTOCOL_V2,
|
|
.flags = SND_MOTU_SPEC_REGISTER_DSP,
|
|
.tx_fixed_pcm_chunks = {14, 14, 8},
|
|
.rx_fixed_pcm_chunks = {14, 14, 8},
|
|
};
|
|
|
|
const struct snd_motu_spec snd_motu_spec_traveler = {
|
|
.name = "Traveler",
|
|
.protocol_version = SND_MOTU_PROTOCOL_V2,
|
|
.flags = SND_MOTU_SPEC_RX_MIDI_2ND_Q |
|
|
SND_MOTU_SPEC_TX_MIDI_2ND_Q |
|
|
SND_MOTU_SPEC_REGISTER_DSP,
|
|
.tx_fixed_pcm_chunks = {14, 14, 8},
|
|
.rx_fixed_pcm_chunks = {14, 14, 8},
|
|
};
|
|
|
|
const struct snd_motu_spec snd_motu_spec_ultralite = {
|
|
.name = "UltraLite",
|
|
.protocol_version = SND_MOTU_PROTOCOL_V2,
|
|
.flags = SND_MOTU_SPEC_RX_MIDI_2ND_Q |
|
|
SND_MOTU_SPEC_TX_MIDI_2ND_Q |
|
|
SND_MOTU_SPEC_REGISTER_DSP,
|
|
.tx_fixed_pcm_chunks = {14, 14, 0},
|
|
.rx_fixed_pcm_chunks = {14, 14, 0},
|
|
};
|
|
|
|
const struct snd_motu_spec snd_motu_spec_8pre = {
|
|
.name = "8pre",
|
|
.protocol_version = SND_MOTU_PROTOCOL_V2,
|
|
.flags = SND_MOTU_SPEC_RX_MIDI_2ND_Q |
|
|
SND_MOTU_SPEC_TX_MIDI_2ND_Q |
|
|
SND_MOTU_SPEC_REGISTER_DSP,
|
|
// Two dummy chunks always in the end of data block.
|
|
.tx_fixed_pcm_chunks = {10, 10, 0},
|
|
.rx_fixed_pcm_chunks = {6, 6, 0},
|
|
};
|