Add the rt linux 4.1.3-rt3 as base

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

diff --git a/kernel/sound/firewire/cmp.h b/kernel/sound/firewire/cmp.h
new file mode 100644 (file)
index 0000000..ebcb484
--- /dev/null
+++ b/kernel/sound/firewire/cmp.h
@@ -0,0 +1,49 @@
+#ifndef SOUND_FIREWIRE_CMP_H_INCLUDED
+#define SOUND_FIREWIRE_CMP_H_INCLUDED
+
+#include <linux/mutex.h>
+#include <linux/types.h>
+#include "iso-resources.h"
+
+struct fw_unit;
+
+enum cmp_direction {
+       CMP_INPUT = 0,
+       CMP_OUTPUT,
+};
+
+/**
+ * struct cmp_connection - manages an isochronous connection to a device
+ * @speed: the connection's actual speed
+ *
+ * This structure manages (using CMP) an isochronous stream between the local
+ * computer and a device's input plug (iPCR) and output plug (oPCR).
+ *
+ * There is no corresponding oPCR created on the local computer, so it is not
+ * possible to overlay connections on top of this one.
+ */
+struct cmp_connection {
+       int speed;
+       /* private: */
+       bool connected;
+       struct mutex mutex;
+       struct fw_iso_resources resources;
+       __be32 last_pcr_value;
+       unsigned int pcr_index;
+       unsigned int max_speed;
+       enum cmp_direction direction;
+};
+
+int cmp_connection_init(struct cmp_connection *connection,
+                       struct fw_unit *unit,
+                       enum cmp_direction direction,
+                       unsigned int pcr_index);
+int cmp_connection_check_used(struct cmp_connection *connection, bool *used);
+void cmp_connection_destroy(struct cmp_connection *connection);
+
+int cmp_connection_establish(struct cmp_connection *connection,
+                            unsigned int max_payload);
+int cmp_connection_update(struct cmp_connection *connection);
+void cmp_connection_break(struct cmp_connection *connection);
+
+#endif