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