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Diffstat (limited to 'sound/firewire/tascam/tascam.h')
-rw-r--r--sound/firewire/tascam/tascam.h45
1 files changed, 45 insertions, 0 deletions
diff --git a/sound/firewire/tascam/tascam.h b/sound/firewire/tascam/tascam.h
index d3cd4065722b..de76313e5d50 100644
--- a/sound/firewire/tascam/tascam.h
+++ b/sound/firewire/tascam/tascam.h
@@ -45,6 +45,29 @@ struct snd_tscm_spec {
#define TSCM_MIDI_IN_PORT_MAX 4
#define TSCM_MIDI_OUT_PORT_MAX 4
+struct snd_fw_async_midi_port;
+typedef int (*snd_fw_async_midi_port_fill)(
+ struct snd_rawmidi_substream *substream,
+ u8 *buf);
+
+struct snd_fw_async_midi_port {
+ struct fw_device *parent;
+ struct work_struct work;
+ bool idling;
+ ktime_t next_ktime;
+ bool error;
+
+ u64 addr;
+ struct fw_transaction transaction;
+
+ u8 *buf;
+ unsigned int len;
+
+ struct snd_rawmidi_substream *substream;
+ snd_fw_async_midi_port_fill fill;
+ int consume_bytes;
+};
+
struct snd_tscm {
struct snd_card *card;
struct fw_unit *unit;
@@ -131,6 +154,28 @@ void snd_tscm_stream_lock_changed(struct snd_tscm *tscm);
int snd_tscm_stream_lock_try(struct snd_tscm *tscm);
void snd_tscm_stream_lock_release(struct snd_tscm *tscm);
+int snd_fw_async_midi_port_init(struct snd_fw_async_midi_port *port,
+ struct fw_unit *unit, u64 addr, unsigned int len,
+ snd_fw_async_midi_port_fill fill);
+void snd_fw_async_midi_port_destroy(struct snd_fw_async_midi_port *port);
+
+static inline void
+snd_fw_async_midi_port_run(struct snd_fw_async_midi_port *port,
+ struct snd_rawmidi_substream *substream)
+{
+ if (!port->error) {
+ port->substream = substream;
+ schedule_work(&port->work);
+ }
+}
+
+static inline void
+snd_fw_async_midi_port_finish(struct snd_fw_async_midi_port *port)
+{
+ port->substream = NULL;
+ port->error = false;
+}
+
int snd_tscm_transaction_register(struct snd_tscm *tscm);
int snd_tscm_transaction_reregister(struct snd_tscm *tscm);
void snd_tscm_transaction_unregister(struct snd_tscm *tscm);