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