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1/* SPDX-License-Identifier: GPL-2.0 */2/*3 * The Virtual DTV test driver serves as a reference DVB driver and helps4 * validate the existing APIs in the media subsystem. It can also aid5 * developers working on userspace applications.6 *7 * When this module is loaded, it will attempt to modprobe 'dvb_vidtv_tuner' and 'dvb_vidtv_demod'.8 *9 * Copyright (C) 2020 Daniel W. S. Almeida10 */11 12#ifndef VIDTV_BRIDGE_H13#define VIDTV_BRIDGE_H14 15/*16 * For now, only one frontend is supported. See vidtv_start_streaming()17 */18#define NUM_FE 119#define VIDTV_PDEV_NAME "vidtv"20 21#include <linux/i2c.h>22#include <linux/platform_device.h>23#include <linux/types.h>24 25#include <media/dmxdev.h>26#include <media/dvb_demux.h>27#include <media/dvb_frontend.h>28#include <media/media-device.h>29 30#include "vidtv_mux.h"31 32/**33 * struct vidtv_dvb - Vidtv bridge state34 * @pdev: The platform device. Obtained when the bridge is probed.35 * @fe: The frontends. Obtained when probing the demodulator modules.36 * @adapter: Represents a DTV adapter. See 'dvb_register_adapter'.37 * @demux: The demux used by the dvb_dmx_swfilter_packets() call.38 * @dmx_dev: Represents a demux device.39 * @dmx_fe: The frontends associated with the demux.40 * @i2c_adapter: The i2c_adapter associated with the bridge driver.41 * @i2c_client_demod: The i2c_clients associated with the demodulator modules.42 * @i2c_client_tuner: The i2c_clients associated with the tuner modules.43 * @nfeeds: The number of feeds active.44 * @feed_lock: Protects access to the start/stop stream logic/data.45 * @streaming: Whether we are streaming now.46 * @mux: The abstraction responsible for delivering MPEG TS packets to the bridge.47 * @mdev: The media_device struct for media controller support.48 */49struct vidtv_dvb {50 struct platform_device *pdev;51 struct dvb_frontend *fe[NUM_FE];52 struct dvb_adapter adapter;53 struct dvb_demux demux;54 struct dmxdev dmx_dev;55 struct dmx_frontend dmx_fe[NUM_FE];56 struct i2c_adapter i2c_adapter;57 struct i2c_client *i2c_client_demod[NUM_FE];58 struct i2c_client *i2c_client_tuner[NUM_FE];59 60 u32 nfeeds;61 struct mutex feed_lock; /* Protects access to the start/stop stream logic/data. */62 63 bool streaming;64 65 struct vidtv_mux *mux;66 67#ifdef CONFIG_MEDIA_CONTROLLER_DVB68 struct media_device mdev;69#endif /* CONFIG_MEDIA_CONTROLLER_DVB */70};71 72#endif // VIDTV_BRIDG_H73