diff options
Diffstat (limited to 'drivers/media/test-drivers/vidtv/vidtv_bridge.h')
| -rw-r--r-- | drivers/media/test-drivers/vidtv/vidtv_bridge.h | 72 |
1 files changed, 72 insertions, 0 deletions
diff --git a/drivers/media/test-drivers/vidtv/vidtv_bridge.h b/drivers/media/test-drivers/vidtv/vidtv_bridge.h new file mode 100644 index 0000000000..de47ce6e7b --- /dev/null +++ b/drivers/media/test-drivers/vidtv/vidtv_bridge.h @@ -0,0 +1,72 @@ +/* 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 |