Digi 002/003 family uses asynchronous transactions for MIDI messages to control the devices. The address to receive the messages is 0xffffe0000040.
This commit supports these MIDI ports.
Cc: Damien Zammit damien@zamaudio.com Cc: Robin Gareus robin@gareus.org Signed-off-by: Takashi Sakamoto o-takashi@sakamocchi.jp --- sound/firewire/digi00x/digi00x-midi.c | 65 ++++++++++++++++++++------ sound/firewire/digi00x/digi00x-transaction.c | 70 +++++++++++++++++++++++++--- sound/firewire/digi00x/digi00x.h | 5 ++ 3 files changed, 118 insertions(+), 22 deletions(-)
diff --git a/sound/firewire/digi00x/digi00x-midi.c b/sound/firewire/digi00x/digi00x-midi.c index 241d93a..9051902 100644 --- a/sound/firewire/digi00x/digi00x-midi.c +++ b/sound/firewire/digi00x/digi00x-midi.c @@ -13,6 +13,10 @@ static int midi_capture_open(struct snd_rawmidi_substream *substream) struct snd_dg00x *dg00x = substream->rmidi->private_data; int err;
+ /* This port is for Asynchronous transaction. */ + if (substream->number == 0) + return 0; + err = snd_dg00x_stream_lock_try(dg00x); if (err < 0) return err; @@ -32,6 +36,10 @@ static int midi_playback_open(struct snd_rawmidi_substream *substream) struct snd_dg00x *dg00x = substream->rmidi->private_data; int err;
+ /* This port is for Asynchronous transaction. */ + if (substream->number == 0) + return 0; + err = snd_dg00x_stream_lock_try(dg00x); if (err < 0) return err; @@ -50,6 +58,9 @@ static int midi_capture_close(struct snd_rawmidi_substream *substream) { struct snd_dg00x *dg00x = substream->rmidi->private_data;
+ if (substream->number == 0) + return 0; + mutex_lock(&dg00x->mutex); dg00x->substreams_counter--; snd_dg00x_stream_stop_duplex(dg00x); @@ -63,6 +74,11 @@ static int midi_playback_close(struct snd_rawmidi_substream *substream) { struct snd_dg00x *dg00x = substream->rmidi->private_data;
+ if (substream->number == 0) { + snd_fw_async_midi_port_finish(&dg00x->out_control); + return 0; + } + mutex_lock(&dg00x->mutex); dg00x->substreams_counter--; snd_dg00x_stream_stop_duplex(dg00x); @@ -79,12 +95,19 @@ static void midi_capture_trigger(struct snd_rawmidi_substream *substrm, int up)
spin_lock_irqsave(&dg00x->lock, flags);
- if (up) - amdtp_dot_midi_trigger(&dg00x->tx_stream, - substrm->number - 1, substrm); - else - amdtp_dot_midi_trigger(&dg00x->tx_stream, - substrm->number - 1, NULL); + if (substrm->number == 0) { + if (up) + dg00x->in_control = substrm; + else + dg00x->in_control = NULL; + } else { + if (up) + amdtp_dot_midi_trigger(&dg00x->tx_stream, + substrm->number - 1, substrm); + else + amdtp_dot_midi_trigger(&dg00x->tx_stream, + substrm->number - 1, NULL); + }
spin_unlock_irqrestore(&dg00x->lock, flags); } @@ -96,12 +119,18 @@ static void midi_playback_trigger(struct snd_rawmidi_substream *substrm, int up)
spin_lock_irqsave(&dg00x->lock, flags);
- if (up) - amdtp_dot_midi_trigger(&dg00x->rx_stream, - substrm->number - 1, substrm); - else - amdtp_dot_midi_trigger(&dg00x->rx_stream, - substrm->number - 1, NULL); + if (substrm->number == 0) { + if (up) + snd_fw_async_midi_port_run(&dg00x->out_control, + substrm); + } else { + if (up) + amdtp_dot_midi_trigger(&dg00x->rx_stream, + substrm->number - 1, substrm); + else + amdtp_dot_midi_trigger(&dg00x->rx_stream, + substrm->number - 1, NULL); + }
spin_unlock_irqrestore(&dg00x->lock, flags); } @@ -124,9 +153,15 @@ static void set_midi_substream_names(struct snd_dg00x *dg00x, struct snd_rawmidi_substream *subs;
list_for_each_entry(subs, &str->substreams, list) { - snprintf(subs->name, sizeof(subs->name), - "%s MIDI %d", - dg00x->card->shortname, subs->number); + /* This port is for device control. */ + if (subs->number == 0) { + snprintf(subs->name, sizeof(subs->name), + "%s control", dg00x->card->shortname); + } else { + snprintf(subs->name, sizeof(subs->name), + "%s MIDI %d", + dg00x->card->shortname, subs->number); + } } }
diff --git a/sound/firewire/digi00x/digi00x-transaction.c b/sound/firewire/digi00x/digi00x-transaction.c index 4568d98..5c66b17 100644 --- a/sound/firewire/digi00x/digi00x-transaction.c +++ b/sound/firewire/digi00x/digi00x-transaction.c @@ -9,6 +9,18 @@ #include <sound/asound.h> #include "digi00x.h"
+static int packetize_message(struct snd_rawmidi_substream *substream, __u8 *buf) +{ + int bytes; + + buf[0] = 0x80; + bytes = snd_rawmidi_transmit_peek(substream, buf + 1, 2); + if (bytes >= 0) + buf[3] = 0xc0 | bytes; + + return bytes; +} + static void handle_unknown_message(struct snd_dg00x *dg00x, unsigned long long offset, u32 *buf) { @@ -21,6 +33,28 @@ static void handle_unknown_message(struct snd_dg00x *dg00x, wake_up(&dg00x->hwdep_wait); }
+static void handle_midi_control(struct snd_dg00x *dg00x, u32 *buf, + unsigned int length) +{ + struct snd_rawmidi_substream *substream; + unsigned int i; + unsigned int len; + u8 *b; + + substream = ACCESS_ONCE(dg00x->in_control); + if (substream == NULL) + return; + + length /= 4; + + for (i = 0; i < length; i++) { + b = (u8 *)&buf[i]; + len = b[3] & 0xf; + if (len > 0) + snd_rawmidi_receive(dg00x->in_control, b + 1, len); + } +} + static void handle_message(struct fw_card *card, struct fw_request *request, int tcode, int destination, int source, int generation, unsigned long long offset, @@ -31,6 +65,8 @@ static void handle_message(struct fw_card *card, struct fw_request *request,
if (offset == dg00x->async_handler.offset) handle_unknown_message(dg00x, offset, buf); + else if (offset == dg00x->async_handler.offset + 4) + handle_midi_control(dg00x, buf, length);
fw_send_response(card, request, RCODE_COMPLETE); } @@ -39,14 +75,25 @@ int snd_dg00x_transaction_reregister(struct snd_dg00x *dg00x) { struct fw_device *device = fw_parent_device(dg00x->unit); __be32 data[2]; + int err;
/* Unknown. 4bytes. */ data[0] = cpu_to_be32((device->card->node_id << 16) | (dg00x->async_handler.offset >> 32)); data[1] = cpu_to_be32(dg00x->async_handler.offset); + err = snd_fw_transaction(dg00x->unit, TCODE_WRITE_BLOCK_REQUEST, + DG00X_ADDR_BASE + DG00X_OFFSET_MESSAGE_ADDR, + &data, sizeof(data), 0); + if (err < 0) + return err; + + /* Asynchronous transactions for MIDI control message. */ + data[0] = cpu_to_be32((device->card->node_id << 16) | + (dg00x->async_handler.offset >> 32)); + data[1] = cpu_to_be32(dg00x->async_handler.offset + 4); return snd_fw_transaction(dg00x->unit, TCODE_WRITE_BLOCK_REQUEST, - DG00X_ADDR_BASE + DG00X_OFFSET_MESSAGE_ADDR, - &data, sizeof(data), 0); + DG00X_ADDR_BASE + DG00X_OFFSET_MIDI_CTL_ADDR, + &data, sizeof(data), 0); }
int snd_dg00x_transaction_register(struct snd_dg00x *dg00x) @@ -57,7 +104,7 @@ int snd_dg00x_transaction_register(struct snd_dg00x *dg00x) }; int err;
- dg00x->async_handler.length = 4; + dg00x->async_handler.length = 12; dg00x->async_handler.address_callback = handle_message; dg00x->async_handler.callback_data = dg00x;
@@ -67,15 +114,24 @@ int snd_dg00x_transaction_register(struct snd_dg00x *dg00x) return err;
err = snd_dg00x_transaction_reregister(dg00x); - if (err < 0) { - fw_core_remove_address_handler(&dg00x->async_handler); - dg00x->async_handler.address_callback = NULL; - } + if (err < 0) + goto error; + + err = snd_fw_async_midi_port_init(&dg00x->out_control, dg00x->unit, + DG00X_ADDR_BASE + DG00X_OFFSET_MMC, + 4, packetize_message); + if (err < 0) + goto error;
return err; +error: + fw_core_remove_address_handler(&dg00x->async_handler); + dg00x->async_handler.address_callback = NULL; + return err; }
void snd_dg00x_transaction_unregister(struct snd_dg00x *dg00x) { + snd_fw_async_midi_port_destroy(&dg00x->out_control); fw_core_remove_address_handler(&dg00x->async_handler); } diff --git a/sound/firewire/digi00x/digi00x.h b/sound/firewire/digi00x/digi00x.h index bd759bf..9b54b5b 100644 --- a/sound/firewire/digi00x/digi00x.h +++ b/sound/firewire/digi00x/digi00x.h @@ -54,6 +54,11 @@ struct snd_dg00x { /* For asynchronous messages. */ struct fw_address_handler async_handler; u32 msg; + + /* For asynchronous MIDI controls. */ + struct tasklet_struct tasklet; + struct snd_rawmidi_substream *in_control; + struct snd_fw_async_midi_port out_control; };
#define DG00X_ADDR_BASE 0xffffe0000000ull