| 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 | */ |
|---|
| 49 | struct 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 |
|---|
| 73 | |
|---|
