diff options
Diffstat (limited to 'sound/firewire/motu/motu-protocol-v3.c')
| -rw-r--r-- | sound/firewire/motu/motu-protocol-v3.c | 326 |
1 files changed, 326 insertions, 0 deletions
diff --git a/sound/firewire/motu/motu-protocol-v3.c b/sound/firewire/motu/motu-protocol-v3.c new file mode 100644 index 000000000..4e6b0e449 --- /dev/null +++ b/sound/firewire/motu/motu-protocol-v3.c @@ -0,0 +1,326 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * motu-protocol-v3.c - a part of driver for MOTU FireWire series + * + * Copyright (c) 2015-2017 Takashi Sakamoto <o-takashi@sakamocchi.jp> + */ + +#include <linux/delay.h> +#include "motu.h" + +#define V3_CLOCK_STATUS_OFFSET 0x0b14 +#define V3_FETCH_PCM_FRAMES 0x02000000 +#define V3_CLOCK_RATE_MASK 0x0000ff00 +#define V3_CLOCK_RATE_SHIFT 8 +#define V3_CLOCK_SOURCE_MASK 0x000000ff + +#define V3_OPT_IFACE_MODE_OFFSET 0x0c94 +#define V3_ENABLE_OPT_IN_IFACE_A 0x00000001 +#define V3_ENABLE_OPT_IN_IFACE_B 0x00000002 +#define V3_ENABLE_OPT_OUT_IFACE_A 0x00000100 +#define V3_ENABLE_OPT_OUT_IFACE_B 0x00000200 +#define V3_NO_ADAT_OPT_IN_IFACE_A 0x00010000 +#define V3_NO_ADAT_OPT_IN_IFACE_B 0x00100000 +#define V3_NO_ADAT_OPT_OUT_IFACE_A 0x00040000 +#define V3_NO_ADAT_OPT_OUT_IFACE_B 0x00400000 + +#define V3_MSG_FLAG_CLK_CHANGED 0x00000002 +#define V3_CLK_WAIT_MSEC 4000 + +int snd_motu_protocol_v3_get_clock_rate(struct snd_motu *motu, + unsigned int *rate) +{ + __be32 reg; + u32 data; + int err; + + err = snd_motu_transaction_read(motu, V3_CLOCK_STATUS_OFFSET, ®, + sizeof(reg)); + if (err < 0) + return err; + data = be32_to_cpu(reg); + + data = (data & V3_CLOCK_RATE_MASK) >> V3_CLOCK_RATE_SHIFT; + if (data >= ARRAY_SIZE(snd_motu_clock_rates)) + return -EIO; + + *rate = snd_motu_clock_rates[data]; + + return 0; +} + +int snd_motu_protocol_v3_set_clock_rate(struct snd_motu *motu, + unsigned int rate) +{ + __be32 reg; + u32 data; + bool need_to_wait; + int i, 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, V3_CLOCK_STATUS_OFFSET, ®, + sizeof(reg)); + if (err < 0) + return err; + data = be32_to_cpu(reg); + + data &= ~(V3_CLOCK_RATE_MASK | V3_FETCH_PCM_FRAMES); + data |= i << V3_CLOCK_RATE_SHIFT; + + need_to_wait = data != be32_to_cpu(reg); + + reg = cpu_to_be32(data); + err = snd_motu_transaction_write(motu, V3_CLOCK_STATUS_OFFSET, ®, + sizeof(reg)); + if (err < 0) + return err; + + if (need_to_wait) { + int result; + + motu->msg = 0; + result = wait_event_interruptible_timeout(motu->hwdep_wait, + motu->msg & V3_MSG_FLAG_CLK_CHANGED, + msecs_to_jiffies(V3_CLK_WAIT_MSEC)); + if (result < 0) + return result; + if (result == 0) + return -ETIMEDOUT; + } + + return 0; +} + +static int detect_clock_source_828mk3(struct snd_motu *motu, u32 data, + enum snd_motu_clock_source *src) +{ + switch (data) { + case 0x00: + *src = SND_MOTU_CLOCK_SOURCE_INTERNAL; + break; + case 0x01: + *src = SND_MOTU_CLOCK_SOURCE_WORD_ON_BNC; + break; + case 0x02: + *src = SND_MOTU_CLOCK_SOURCE_SPH; + break; + case 0x10: + *src = SND_MOTU_CLOCK_SOURCE_SPDIF_ON_COAX; + break; + case 0x18: + case 0x19: + { + __be32 reg; + u32 options; + int err; + + err = snd_motu_transaction_read(motu, + V3_OPT_IFACE_MODE_OFFSET, ®, sizeof(reg)); + if (err < 0) + return err; + options = be32_to_cpu(reg); + + if (data == 0x18) { + if (options & V3_NO_ADAT_OPT_IN_IFACE_A) + *src = SND_MOTU_CLOCK_SOURCE_SPDIF_ON_OPT_A; + else + *src = SND_MOTU_CLOCK_SOURCE_ADAT_ON_OPT_A; + } else { + if (options & V3_NO_ADAT_OPT_IN_IFACE_B) + *src = SND_MOTU_CLOCK_SOURCE_SPDIF_ON_OPT_B; + else + *src = SND_MOTU_CLOCK_SOURCE_ADAT_ON_OPT_B; + } + + break; + } + default: + *src = SND_MOTU_CLOCK_SOURCE_UNKNOWN; + break; + } + + return 0; +} + +static int v3_detect_clock_source(struct snd_motu *motu, u32 data, + enum snd_motu_clock_source *src) +{ + switch (data) { + case 0x00: + *src = SND_MOTU_CLOCK_SOURCE_INTERNAL; + break; + case 0x01: + *src = SND_MOTU_CLOCK_SOURCE_WORD_ON_BNC; + break; + case 0x02: + *src = SND_MOTU_CLOCK_SOURCE_SPH; + break; + case 0x10: + *src = SND_MOTU_CLOCK_SOURCE_SPDIF_ON_COAX; + break; + default: + *src = SND_MOTU_CLOCK_SOURCE_UNKNOWN; + break; + } + + return 0; +} + +int snd_motu_protocol_v3_get_clock_source(struct snd_motu *motu, + enum snd_motu_clock_source *src) +{ + __be32 reg; + u32 data; + int err; + + err = snd_motu_transaction_read(motu, V3_CLOCK_STATUS_OFFSET, ®, + sizeof(reg)); + if (err < 0) + return err; + data = be32_to_cpu(reg) & V3_CLOCK_SOURCE_MASK; + + if (motu->spec == &snd_motu_spec_828mk3) + return detect_clock_source_828mk3(motu, data, src); + else + return v3_detect_clock_source(motu, data, src); +} + +int snd_motu_protocol_v3_switch_fetching_mode(struct snd_motu *motu, + bool enable) +{ + __be32 reg; + u32 data; + int err; + + err = snd_motu_transaction_read(motu, V3_CLOCK_STATUS_OFFSET, ®, + sizeof(reg)); + if (err < 0) + return 0; + data = be32_to_cpu(reg); + + if (enable) + data |= V3_FETCH_PCM_FRAMES; + else + data &= ~V3_FETCH_PCM_FRAMES; + + reg = cpu_to_be32(data); + return snd_motu_transaction_write(motu, V3_CLOCK_STATUS_OFFSET, ®, + sizeof(reg)); +} + +static int detect_packet_formats_828mk3(struct snd_motu *motu, u32 data) +{ + if (data & V3_ENABLE_OPT_IN_IFACE_A) { + if (data & V3_NO_ADAT_OPT_IN_IFACE_A) { + motu->tx_packet_formats.pcm_chunks[0] += 4; + motu->tx_packet_formats.pcm_chunks[1] += 4; + } else { + motu->tx_packet_formats.pcm_chunks[0] += 8; + motu->tx_packet_formats.pcm_chunks[1] += 4; + } + } + + if (data & V3_ENABLE_OPT_IN_IFACE_B) { + if (data & V3_NO_ADAT_OPT_IN_IFACE_B) { + motu->tx_packet_formats.pcm_chunks[0] += 4; + motu->tx_packet_formats.pcm_chunks[1] += 4; + } else { + motu->tx_packet_formats.pcm_chunks[0] += 8; + motu->tx_packet_formats.pcm_chunks[1] += 4; + } + } + + if (data & V3_ENABLE_OPT_OUT_IFACE_A) { + if (data & V3_NO_ADAT_OPT_OUT_IFACE_A) { + motu->rx_packet_formats.pcm_chunks[0] += 4; + motu->rx_packet_formats.pcm_chunks[1] += 4; + } else { + motu->rx_packet_formats.pcm_chunks[0] += 8; + motu->rx_packet_formats.pcm_chunks[1] += 4; + } + } + + if (data & V3_ENABLE_OPT_OUT_IFACE_B) { + if (data & V3_NO_ADAT_OPT_OUT_IFACE_B) { + motu->rx_packet_formats.pcm_chunks[0] += 4; + motu->rx_packet_formats.pcm_chunks[1] += 4; + } else { + motu->rx_packet_formats.pcm_chunks[0] += 8; + motu->rx_packet_formats.pcm_chunks[1] += 4; + } + } + + return 0; +} + +int snd_motu_protocol_v3_cache_packet_formats(struct snd_motu *motu) +{ + __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, V3_OPT_IFACE_MODE_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 (motu->spec == &snd_motu_spec_828mk3) + return detect_packet_formats_828mk3(motu, data); + else + return 0; +} + + +const struct snd_motu_spec snd_motu_spec_828mk3 = { + .name = "828mk3", + .protocol_version = SND_MOTU_PROTOCOL_V3, + .flags = SND_MOTU_SPEC_RX_MIDI_3RD_Q | + SND_MOTU_SPEC_TX_MIDI_3RD_Q, + .tx_fixed_pcm_chunks = {18, 18, 14}, + .rx_fixed_pcm_chunks = {14, 14, 10}, +}; + +const struct snd_motu_spec snd_motu_spec_ultralite_mk3 = { + .name = "UltraLiteMk3", + .protocol_version = SND_MOTU_PROTOCOL_V3, + .flags = SND_MOTU_SPEC_RX_MIDI_3RD_Q | + SND_MOTU_SPEC_TX_MIDI_3RD_Q, + .tx_fixed_pcm_chunks = {18, 14, 10}, + .rx_fixed_pcm_chunks = {14, 14, 14}, +}; + +const struct snd_motu_spec snd_motu_spec_audio_express = { + .name = "AudioExpress", + .protocol_version = SND_MOTU_PROTOCOL_V3, + .flags = SND_MOTU_SPEC_RX_MIDI_2ND_Q | + SND_MOTU_SPEC_TX_MIDI_3RD_Q, + .tx_fixed_pcm_chunks = {10, 10, 0}, + .rx_fixed_pcm_chunks = {10, 10, 0}, +}; + +const struct snd_motu_spec snd_motu_spec_4pre = { + .name = "4pre", + .protocol_version = SND_MOTU_PROTOCOL_V3, + .tx_fixed_pcm_chunks = {10, 10, 0}, + .rx_fixed_pcm_chunks = {10, 10, 0}, +}; |