| // 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_CLOCK_SRC_INTERNAL 0x00 |
| #define V3_CLOCK_SRC_WORD_ON_BNC 0x01 |
| #define V3_CLOCK_SRC_SPH 0x02 |
| #define V3_CLOCK_SRC_SPDIF_ON_COAX 0x10 |
| #define V3_CLOCK_SRC_OPT_IFACE_A 0x18 |
| #define V3_CLOCK_SRC_OPT_IFACE_B 0x19 |
| |
| #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; |
| } |
| |
| 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; |
| |
| switch (data) { |
| case V3_CLOCK_SRC_INTERNAL: |
| *src = SND_MOTU_CLOCK_SOURCE_INTERNAL; |
| break; |
| case V3_CLOCK_SRC_WORD_ON_BNC: |
| *src = SND_MOTU_CLOCK_SOURCE_WORD_ON_BNC; |
| break; |
| case V3_CLOCK_SRC_SPH: |
| *src = SND_MOTU_CLOCK_SOURCE_SPH; |
| break; |
| case V3_CLOCK_SRC_SPDIF_ON_COAX: |
| *src = SND_MOTU_CLOCK_SOURCE_SPDIF_ON_COAX; |
| break; |
| case V3_CLOCK_SRC_OPT_IFACE_A: |
| case V3_CLOCK_SRC_OPT_IFACE_B: |
| { |
| __be32 reg; |
| u32 options; |
| |
| 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 == V3_CLOCK_SRC_OPT_IFACE_A) { |
| 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; |
| } |
| |
| 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_fw || motu->spec == &snd_motu_spec_828mk3_hybrid) |
| return detect_packet_formats_828mk3(motu, data); |
| else |
| return 0; |
| } |
| |
| |
| const struct snd_motu_spec snd_motu_spec_828mk3_fw = { |
| .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_828mk3_hybrid = { |
| .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, 14}, // Additional 4 dummy chunks at higher rate. |
| }; |
| |
| 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}, |
| }; |
