1 /* SPDX-License-Identifier: GPL-2.0 */
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.
7 * When this module is loaded, it will attempt to modprobe 'dvb_vidtv_tuner' and 'dvb_vidtv_demod'.
9 * Copyright (C) 2020 Daniel W. S. Almeida
12 #ifndef VIDTV_BRIDGE_H
13 #define VIDTV_BRIDGE_H
16 * For now, only one frontend is supported. See vidtv_start_streaming()
19 #define VIDTV_PDEV_NAME "vidtv"
21 #include <linux/i2c.h>
22 #include <linux/platform_device.h>
23 #include <linux/types.h>
25 #include <media/dmxdev.h>
26 #include <media/dvb_demux.h>
27 #include <media/dvb_frontend.h>
28 #include <media/media-device.h>
30 #include "vidtv_mux.h"
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.
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];
61 struct mutex feed_lock; /* Protects access to the start/stop stream logic/data. */
65 struct vidtv_mux *mux;
67 #ifdef CONFIG_MEDIA_CONTROLLER_DVB
68 struct media_device mdev;
69 #endif /* CONFIG_MEDIA_CONTROLLER_DVB */
72 #endif // VIDTV_BRIDG_H