/* SPDX-License-Identifier: GPL-2.0 */#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_reserve(struct cmp_connection *connection,			   unsigned int max_payload);void cmp_connection_release(struct cmp_connection *connection); int cmp_connection_establish(struct cmp_connection *connection);void cmp_connection_break(struct cmp_connection *connection); #endif