linux/include/linux/greybus/connection.h

/* SPDX-License-Identifier: GPL-2.0 */
/*
 * Greybus connections
 *
 * Copyright 2014 Google Inc.
 * Copyright 2014 Linaro Ltd.
 */

#ifndef __CONNECTION_H
#define __CONNECTION_H

#include <linux/bits.h>
#include <linux/list.h>
#include <linux/kfifo.h>
#include <linux/kref.h>
#include <linux/workqueue.h>

#define GB_CONNECTION_FLAG_CSD …
#define GB_CONNECTION_FLAG_NO_FLOWCTRL …
#define GB_CONNECTION_FLAG_OFFLOADED …
#define GB_CONNECTION_FLAG_CDSI1 …
#define GB_CONNECTION_FLAG_CONTROL …
#define GB_CONNECTION_FLAG_HIGH_PRIO …

#define GB_CONNECTION_FLAG_CORE_MASK …

enum gb_connection_state { … };

struct gb_operation;

gb_request_handler_t;

struct gb_connection { … };

struct gb_connection *gb_connection_create_static(struct gb_host_device *hd,
				u16 hd_cport_id, gb_request_handler_t handler);
struct gb_connection *gb_connection_create_control(struct gb_interface *intf);
struct gb_connection *gb_connection_create(struct gb_bundle *bundle,
				u16 cport_id, gb_request_handler_t handler);
struct gb_connection *gb_connection_create_flags(struct gb_bundle *bundle,
				u16 cport_id, gb_request_handler_t handler,
				unsigned long flags);
struct gb_connection *gb_connection_create_offloaded(struct gb_bundle *bundle,
				u16 cport_id, unsigned long flags);
void gb_connection_destroy(struct gb_connection *connection);

static inline bool gb_connection_is_static(struct gb_connection *connection)
{ … }

int gb_connection_enable(struct gb_connection *connection);
int gb_connection_enable_tx(struct gb_connection *connection);
void gb_connection_disable_rx(struct gb_connection *connection);
void gb_connection_disable(struct gb_connection *connection);
void gb_connection_disable_forced(struct gb_connection *connection);

void gb_connection_mode_switch_prepare(struct gb_connection *connection);
void gb_connection_mode_switch_complete(struct gb_connection *connection);

void greybus_data_rcvd(struct gb_host_device *hd, u16 cport_id,
		       u8 *data, size_t length);

void gb_connection_latency_tag_enable(struct gb_connection *connection);
void gb_connection_latency_tag_disable(struct gb_connection *connection);

static inline bool gb_connection_e2efc_enabled(struct gb_connection *connection)
{ … }

static inline bool
gb_connection_flow_control_disabled(struct gb_connection *connection)
{ … }

static inline bool gb_connection_is_offloaded(struct gb_connection *connection)
{ … }

static inline bool gb_connection_is_control(struct gb_connection *connection)
{ … }

static inline void *gb_connection_get_data(struct gb_connection *connection)
{ … }

static inline void gb_connection_set_data(struct gb_connection *connection,
					  void *data)
{ … }

#endif /* __CONNECTION_H */