These changes are the raw update to linux-4.4.6-rt14. Kernel sources

[kvmfornfv.git] / kernel / sound / firewire / lib.h

diff --git a/kernel/sound/firewire/lib.h b/kernel/sound/firewire/lib.h
index 02cfabc..f3f6f84 100644 (file)
--- a/kernel/sound/firewire/lib.h
+++ b/kernel/sound/firewire/lib.h
@@ -3,6 +3,8 @@
 
 #include <linux/firewire-constants.h>
 #include <linux/types.h>
+#include <linux/sched.h>
+#include <sound/rawmidi.h>
 
 struct fw_unit;
 
@@ -20,4 +22,58 @@ static inline bool rcode_is_permanent_error(int rcode)
        return rcode == RCODE_TYPE_ERROR || rcode == RCODE_ADDRESS_ERROR;
 }
 
+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;
+       unsigned int consume_bytes;
+};
+
+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);
+
+/**
+ * snd_fw_async_midi_port_run - run transactions for the async MIDI port
+ * @port: the asynchronous MIDI port
+ * @substream: the MIDI substream
+ */
+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);
+       }
+}
+
+/**
+ * snd_fw_async_midi_port_finish - finish the asynchronous MIDI port
+ * @port: the asynchronous MIDI port
+ */
+static inline void
+snd_fw_async_midi_port_finish(struct snd_fw_async_midi_port *port)
+{
+       port->substream = NULL;
+       port->error = false;
+}
+
 #endif