/* SPDX-License-Identifier: GPL-2.0 */ /* * The Virtual DTV test driver serves as a reference DVB driver and helps * validate the existing APIs in the media subsystem. It can also aid * developers working on userspace applications. * * When this module is loaded, it will attempt to modprobe 'dvb_vidtv_tuner' and 'dvb_vidtv_demod'. * * Copyright (C) 2020 Daniel W. S. Almeida */ #ifndef VIDTV_BRIDGE_H #define VIDTV_BRIDGE_H /* * For now, only one frontend is supported. See vidtv_start_streaming() */ #define NUM_FE 1 #define VIDTV_PDEV_NAME "vidtv" #include <linux/i2c.h> #include <linux/platform_device.h> #include <linux/types.h> #include <media/dmxdev.h> #include <media/dvb_demux.h> #include <media/dvb_frontend.h> #include <media/media-device.h> #include "vidtv_mux.h" /** * struct vidtv_dvb - Vidtv bridge state * @pdev: The platform device. Obtained when the bridge is probed. * @fe: The frontends. Obtained when probing the demodulator modules. * @adapter: Represents a DTV adapter. See 'dvb_register_adapter'. * @demux: The demux used by the dvb_dmx_swfilter_packets() call. * @dmx_dev: Represents a demux device. * @dmx_fe: The frontends associated with the demux. * @i2c_adapter: The i2c_adapter associated with the bridge driver. * @i2c_client_demod: The i2c_clients associated with the demodulator modules. * @i2c_client_tuner: The i2c_clients associated with the tuner modules. * @nfeeds: The number of feeds active. * @feed_lock: Protects access to the start/stop stream logic/data. * @streaming: Whether we are streaming now. * @mux: The abstraction responsible for delivering MPEG TS packets to the bridge. * @mdev: The media_device struct for media controller support. */ struct vidtv_dvb { struct platform_device *pdev; struct dvb_frontend *fe[NUM_FE]; struct dvb_adapter adapter; struct dvb_demux demux; struct dmxdev dmx_dev; struct dmx_frontend dmx_fe[NUM_FE]; struct i2c_adapter i2c_adapter; struct i2c_client *i2c_client_demod[NUM_FE]; struct i2c_client *i2c_client_tuner[NUM_FE]; u32 nfeeds; struct mutex feed_lock; /* Protects access to the start/stop stream logic/data. */ bool streaming; struct vidtv_mux *mux; #ifdef CONFIG_MEDIA_CONTROLLER_DVB struct media_device mdev; #endif /* CONFIG_MEDIA_CONTROLLER_DVB */ }; #endif // VIDTV_BRIDG_H