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-rw-r--r--sound/firewire/motu/motu-protocol-v3.c326
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, &reg,
+ 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, &reg,
+ 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, &reg,
+ 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, &reg, 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, &reg,
+ 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, &reg,
+ 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, &reg,
+ 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, &reg,
+ 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},
+};
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