Quelle  cec-splitter.h   Sprache: C

/* SPDX-License-Identifier: GPL-2.0-only */

/*
 * Copyright 2021-2024 Cisco Systems, Inc. and/or its affiliates. All rights reserved.
 */

#ifndef _CEC_SPLITTER_H_
#define _CEC_SPLITTER_H_

struct cec_splitter;

#define STATE_CHANGE_MAX_REPEATS 2

struct cec_splitter_port {
 struct cec_splitter *splitter;
 struct cec_adapter *adap;
 unsigned int port;
 bool is_active_source;
 bool found_sink;
 ktime_t lost_sink_ts;
 u32 out_request_current_latency_seq;
 ktime_t out_request_current_latency_ts;
 u8 video_latency;
 u32 out_give_device_power_status_seq;
 ktime_t out_give_device_power_status_ts;
 u8 power_status;
};

struct cec_splitter {
 struct device *dev;
 unsigned int num_out_ports;
 struct cec_splitter_port **ports;

 /* High-level splitter state */
 u8 request_current_latency_dest;
 u8 give_device_power_status_dest;
 bool is_standby;
};

void cec_splitter_unconfigured_output(struct cec_splitter_port *port);
void cec_splitter_configured_output(struct cec_splitter_port *port);
int cec_splitter_received_input(struct cec_splitter_port *port, struct cec_msg *msg);
int cec_splitter_received_output(struct cec_splitter_port *port, struct cec_msg *msg,
     struct cec_adapter *input_adap);
void cec_splitter_nb_transmit_canceled_output(struct cec_splitter_port *port,
           const struct cec_msg *msg,
           struct cec_adapter *input_adap);
bool cec_splitter_poll(struct cec_splitter *splitter,
         struct cec_adapter *input_adap, bool debug);

#endif