359 lines
8.7 KiB
C
359 lines
8.7 KiB
C
// 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 <o-takashi@sakamocchi.jp>
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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_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 detect_clock_source_optical_model(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) {
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case 0:
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*src = SND_MOTU_CLOCK_SOURCE_INTERNAL;
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break;
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case 1:
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{
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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 (be32_to_cpu(reg) & 0x00000200)
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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_ADAT_ON_OPT;
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break;
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}
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case 2:
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*src = SND_MOTU_CLOCK_SOURCE_SPDIF_ON_COAX;
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break;
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case 3:
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*src = SND_MOTU_CLOCK_SOURCE_SPH;
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break;
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case 4:
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*src = SND_MOTU_CLOCK_SOURCE_WORD_ON_BNC;
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break;
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case 5:
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*src = SND_MOTU_CLOCK_SOURCE_ADAT_ON_DSUB;
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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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static int v2_detect_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) {
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case 0:
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*src = SND_MOTU_CLOCK_SOURCE_INTERNAL;
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break;
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case 2:
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*src = SND_MOTU_CLOCK_SOURCE_SPDIF_ON_COAX;
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break;
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case 3:
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*src = SND_MOTU_CLOCK_SOURCE_SPH;
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break;
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case 4:
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*src = SND_MOTU_CLOCK_SOURCE_WORD_ON_BNC;
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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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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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data &= V2_CLOCK_SRC_MASK;
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if (motu->spec == &snd_motu_spec_828mk2 ||
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motu->spec == &snd_motu_spec_traveler)
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return detect_clock_source_optical_model(motu, data, src);
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else
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return v2_detect_clock_source(motu, data, src);
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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 and 896HD, 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 {
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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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static int detect_packet_formats_828mk2(struct snd_motu *motu, u32 data)
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{
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if (((data & V2_OPT_IN_IFACE_MASK) >> V2_OPT_IN_IFACE_SHIFT) ==
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V2_OPT_IFACE_MODE_ADAT) {
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motu->tx_packet_formats.pcm_chunks[0] += 8;
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motu->tx_packet_formats.pcm_chunks[1] += 4;
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}
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if (((data & V2_OPT_OUT_IFACE_MASK) >> V2_OPT_OUT_IFACE_SHIFT) ==
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V2_OPT_IFACE_MODE_ADAT) {
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motu->rx_packet_formats.pcm_chunks[0] += 8;
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motu->rx_packet_formats.pcm_chunks[1] += 4;
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}
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return 0;
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}
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static int detect_packet_formats_traveler(struct snd_motu *motu, u32 data)
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{
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if (((data & V2_OPT_IN_IFACE_MASK) >> V2_OPT_IN_IFACE_SHIFT) ==
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V2_OPT_IFACE_MODE_ADAT) {
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motu->tx_packet_formats.pcm_chunks[0] += 8;
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motu->tx_packet_formats.pcm_chunks[1] += 4;
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}
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if (((data & V2_OPT_OUT_IFACE_MASK) >> V2_OPT_OUT_IFACE_SHIFT) ==
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V2_OPT_IFACE_MODE_ADAT) {
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motu->rx_packet_formats.pcm_chunks[0] += 8;
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motu->rx_packet_formats.pcm_chunks[1] += 4;
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}
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return 0;
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}
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static int detect_packet_formats_8pre(struct snd_motu *motu, u32 data)
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{
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if (((data & V2_OPT_IN_IFACE_MASK) >> V2_OPT_IN_IFACE_SHIFT) ==
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V2_OPT_IFACE_MODE_ADAT) {
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motu->tx_packet_formats.pcm_chunks[0] += 8;
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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) ==
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V2_OPT_IFACE_MODE_ADAT) {
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motu->rx_packet_formats.pcm_chunks[0] += 8;
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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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int snd_motu_protocol_v2_cache_packet_formats(struct snd_motu *motu)
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{
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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 (motu->spec == &snd_motu_spec_828mk2)
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return detect_packet_formats_828mk2(motu, data);
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else if (motu->spec == &snd_motu_spec_traveler)
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return detect_packet_formats_traveler(motu, data);
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else if (motu->spec == &snd_motu_spec_8pre)
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return detect_packet_formats_8pre(motu, data);
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else
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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_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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.tx_fixed_pcm_chunks = {10, 6, 0},
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.rx_fixed_pcm_chunks = {10, 6, 0},
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};
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