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authorThomas Gleixner <tglx@linutronix.de>2011-05-14 12:06:36 +0200
committerThomas Gleixner <tglx@linutronix.de>2011-05-14 12:06:36 +0200
commita18f22a968de17b29f2310cdb7ba69163e65ec15 (patch)
treea7d56d88fad5e444d7661484109758a2f436129e /sound/firewire/cmp.h
parenta1c57e0fec53defe745e64417eacdbd3618c3e66 (diff)
parent798778b8653f64b7b2162ac70eca10367cff6ce8 (diff)
Merge branch 'consolidate-clksrc-i8253' of master.kernel.org:~rmk/linux-2.6-arm into timers/clocksource
Conflicts: arch/ia64/kernel/cyclone.c arch/mips/kernel/i8253.c arch/x86/kernel/i8253.c Reason: Resolve conflicts so further cleanups do not conflict further Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'sound/firewire/cmp.h')
-rw-r--r--sound/firewire/cmp.h41
1 files changed, 41 insertions, 0 deletions
diff --git a/sound/firewire/cmp.h b/sound/firewire/cmp.h
new file mode 100644
index 000000000000..f47de08feb12
--- /dev/null
+++ b/sound/firewire/cmp.h
@@ -0,0 +1,41 @@
+#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;
+
+/**
+ * struct cmp_connection - manages an isochronous connection to a device
+ * @speed: the connection's actual speed
+ *
+ * This structure manages (using CMP) an isochronous stream from the local
+ * computer to a device's input plug (iPCR).
+ *
+ * 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;
+};
+
+int cmp_connection_init(struct cmp_connection *connection,
+ struct fw_unit *unit,
+ unsigned int ipcr_index);
+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