cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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vidtv_bridge.h (2322B)

      1/* SPDX-License-Identifier: GPL-2.0 */
      2/*
      3 * The Virtual DTV test driver serves as a reference DVB driver and helps
      4 * validate the existing APIs in the media subsystem. It can also aid
      5 * 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. Almeida
     10 */
     11
     12#ifndef VIDTV_BRIDGE_H
     13#define VIDTV_BRIDGE_H
     14
     15/*
     16 * For now, only one frontend is supported. See vidtv_start_streaming()
     17 */
     18#define NUM_FE 1
     19#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 state
     34 * @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_DVB
     68	struct media_device mdev;
     69#endif /* CONFIG_MEDIA_CONTROLLER_DVB */
     70};
     71
     72#endif // VIDTV_BRIDG_H