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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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8b460c76bd
In protocols of MOTU FireWire series, when transferring MIDI messages, transmitter set existence flag to one byte on first several quadlets. The position differs depending on protocols and models, however two cases are confirmed; in 5th byte and 8th byte from MSB side. This commit adds a series of specification flag to describe them. When the existence flag is in the 5th byte, SND_MOTU_SPEC_[R|T]X_MIDI_2ND_Q is used. Else, another set of the flag is used. Here, '_Q' means quadlet. Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp> Signed-off-by: Takashi Iwai <tiwai@suse.de>
233 lines
5.8 KiB
C
233 lines
5.8 KiB
C
/*
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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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* Licensed under the terms of the GNU General Public License, version 2.
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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_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 v2_get_clock_rate(struct snd_motu *motu, unsigned int *rate)
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{
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__be32 reg;
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unsigned int index;
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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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index = (be32_to_cpu(reg) & 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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static int v2_set_clock_rate(struct snd_motu *motu, 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 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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unsigned int index;
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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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index = be32_to_cpu(reg) & V2_CLOCK_SRC_MASK;
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if (index > 5)
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return -EIO;
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/* To check the configuration of optical interface. */
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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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switch (index) {
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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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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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case 2:
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*src = SND_MOTU_CLOCK_SOURCE_SPDIF_ON_COAX;
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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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return -EIO;
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}
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return 0;
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}
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static int v2_switch_fetching_mode(struct snd_motu *motu, bool enable)
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{
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/* V2 protocol doesn't have this feature. */
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return 0;
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}
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static void calculate_fixed_part(struct snd_motu_packet_format *formats,
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enum amdtp_stream_direction dir,
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enum snd_motu_spec_flags flags,
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unsigned char analog_ports)
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{
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unsigned char pcm_chunks[3] = {0, 0, 0};
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formats->msg_chunks = 2;
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pcm_chunks[0] = analog_ports;
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pcm_chunks[1] = analog_ports;
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if (flags & SND_MOTU_SPEC_SUPPORT_CLOCK_X4)
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pcm_chunks[2] = analog_ports;
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if (dir == AMDTP_IN_STREAM) {
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if (flags & SND_MOTU_SPEC_TX_MICINST_CHUNK) {
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pcm_chunks[0] += 2;
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pcm_chunks[1] += 2;
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}
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if (flags & SND_MOTU_SPEC_TX_RETURN_CHUNK) {
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pcm_chunks[0] += 2;
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pcm_chunks[1] += 2;
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}
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} else {
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/*
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* Packets to v2 units transfer main-out-1/2 and phone-out-1/2.
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*/
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pcm_chunks[0] += 4;
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pcm_chunks[1] += 4;
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}
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/*
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* All of v2 models have a pair of coaxial interfaces for digital in/out
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* port. At 44.1/48.0/88.2/96.0 kHz, packets includes PCM from these
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* ports.
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*/
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pcm_chunks[0] += 2;
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pcm_chunks[1] += 2;
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/* This part should be multiples of 4. */
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formats->fixed_part_pcm_chunks[0] = round_up(2 + pcm_chunks[0], 4) - 2;
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formats->fixed_part_pcm_chunks[1] = round_up(2 + pcm_chunks[1], 4) - 2;
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if (flags & SND_MOTU_SPEC_SUPPORT_CLOCK_X4)
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formats->fixed_part_pcm_chunks[2] =
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round_up(2 + pcm_chunks[2], 4) - 2;
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}
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static void calculate_differed_part(struct snd_motu_packet_format *formats,
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enum snd_motu_spec_flags flags,
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u32 data, u32 mask, u32 shift)
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{
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unsigned char pcm_chunks[3] = {0, 0};
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/*
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* When optical interfaces are configured for S/PDIF (TOSLINK),
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* the above PCM frames come from them, instead of coaxial
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* interfaces.
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*/
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data = (data & mask) >> shift;
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if ((flags & SND_MOTU_SPEC_HAS_OPT_IFACE_A) &&
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data == V2_OPT_IFACE_MODE_ADAT) {
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pcm_chunks[0] += 8;
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pcm_chunks[1] += 4;
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}
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/* At mode x4, no data chunks are supported in this part. */
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formats->differed_part_pcm_chunks[0] = pcm_chunks[0];
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formats->differed_part_pcm_chunks[1] = pcm_chunks[1];
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}
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static int 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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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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calculate_fixed_part(&motu->tx_packet_formats, AMDTP_IN_STREAM,
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motu->spec->flags, motu->spec->analog_in_ports);
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calculate_differed_part(&motu->tx_packet_formats, motu->spec->flags,
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data, V2_OPT_IN_IFACE_MASK, V2_OPT_IN_IFACE_SHIFT);
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calculate_fixed_part(&motu->rx_packet_formats, AMDTP_OUT_STREAM,
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motu->spec->flags, motu->spec->analog_out_ports);
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calculate_differed_part(&motu->rx_packet_formats, motu->spec->flags,
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data, V2_OPT_OUT_IFACE_MASK, V2_OPT_OUT_IFACE_SHIFT);
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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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return 0;
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}
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const struct snd_motu_protocol snd_motu_protocol_v2 = {
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.get_clock_rate = v2_get_clock_rate,
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.set_clock_rate = v2_set_clock_rate,
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.get_clock_source = v2_get_clock_source,
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.switch_fetching_mode = v2_switch_fetching_mode,
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.cache_packet_formats = v2_cache_packet_formats,
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};
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